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1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 | // SPDX-License-Identifier: GPL-2.0+ /* * HID driver for UC-Logic devices not fully compliant with HID standard * - original and fixed report descriptors * * Copyright (c) 2010-2017 Nikolai Kondrashov * Copyright (c) 2013 Martin Rusko */ /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. */ #include "hid-uclogic-rdesc.h" #include <linux/slab.h> #include <linux/unaligned.h> #include <kunit/visibility.h> /* Fixed WP4030U report descriptor */ const __u8 uclogic_rdesc_wp4030u_fixed_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x09, /* Report ID (9), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x14, /* Logical Minimum (0), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x65, 0x13, /* Unit (Inch), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0xA0, 0x0F, /* Physical Maximum (4000), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0xB8, 0x0B, /* Physical Maximum (3000), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_wp4030u_fixed_size = sizeof(uclogic_rdesc_wp4030u_fixed_arr); /* Fixed WP5540U report descriptor */ const __u8 uclogic_rdesc_wp5540u_fixed_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x09, /* Report ID (9), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x14, /* Logical Minimum (0), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x65, 0x13, /* Unit (Inch), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0x7C, 0x15, /* Physical Maximum (5500), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0xA0, 0x0F, /* Physical Maximum (4000), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0, /* End Collection, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x02, /* Usage (Mouse), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x08, /* Report ID (8), */ 0x09, 0x01, /* Usage (Pointer), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x03, /* Usage Maximum (03h), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x75, 0x08, /* Report Size (8), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x15, 0x81, /* Logical Minimum (-127), */ 0x25, 0x7F, /* Logical Maximum (127), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x09, 0x38, /* Usage (Wheel), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_wp5540u_fixed_size = sizeof(uclogic_rdesc_wp5540u_fixed_arr); /* Fixed WP8060U report descriptor */ const __u8 uclogic_rdesc_wp8060u_fixed_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x09, /* Report ID (9), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x14, /* Logical Minimum (0), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x65, 0x13, /* Unit (Inch), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0x40, 0x1F, /* Physical Maximum (8000), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0x70, 0x17, /* Physical Maximum (6000), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0, /* End Collection, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x02, /* Usage (Mouse), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x08, /* Report ID (8), */ 0x09, 0x01, /* Usage (Pointer), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x03, /* Usage Maximum (03h), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x75, 0x08, /* Report Size (8), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x15, 0x81, /* Logical Minimum (-127), */ 0x25, 0x7F, /* Logical Maximum (127), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x09, 0x38, /* Usage (Wheel), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_wp8060u_fixed_size = sizeof(uclogic_rdesc_wp8060u_fixed_arr); /* Fixed WP1062 report descriptor */ const __u8 uclogic_rdesc_wp1062_fixed_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x09, /* Report ID (9), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x04, /* Report Count (4), */ 0x81, 0x01, /* Input (Constant), */ 0x09, 0x32, /* Usage (In Range), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x14, /* Logical Minimum (0), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x65, 0x13, /* Unit (Inch), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0x10, 0x27, /* Physical Maximum (10000), */ 0x26, 0x20, 0x4E, /* Logical Maximum (20000), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0xB7, 0x19, /* Physical Maximum (6583), */ 0x26, 0x6E, 0x33, /* Logical Maximum (13166), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_wp1062_fixed_size = sizeof(uclogic_rdesc_wp1062_fixed_arr); /* Fixed PF1209 report descriptor */ const __u8 uclogic_rdesc_pf1209_fixed_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x09, /* Report ID (9), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x14, /* Logical Minimum (0), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x65, 0x13, /* Unit (Inch), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0xE0, 0x2E, /* Physical Maximum (12000), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0x28, 0x23, /* Physical Maximum (9000), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0, /* End Collection, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x02, /* Usage (Mouse), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x08, /* Report ID (8), */ 0x09, 0x01, /* Usage (Pointer), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x03, /* Usage Maximum (03h), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x75, 0x08, /* Report Size (8), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x15, 0x81, /* Logical Minimum (-127), */ 0x25, 0x7F, /* Logical Maximum (127), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x09, 0x38, /* Usage (Wheel), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_pf1209_fixed_size = sizeof(uclogic_rdesc_pf1209_fixed_arr); /* Fixed PID 0522 tablet report descriptor, interface 0 (stylus) */ const __u8 uclogic_rdesc_twhl850_fixed0_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x09, /* Report ID (9), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x03, /* Report Count (3), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x81, 0x02, /* Input (Variable), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x95, 0x01, /* Report Count (1), */ 0x09, 0x32, /* Usage (In Range), */ 0x81, 0x02, /* Input (Variable), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x75, 0x10, /* Report Size (16), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x65, 0x13, /* Unit (Inch), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0x40, 0x1F, /* Physical Maximum (8000), */ 0x26, 0x00, 0x7D, /* Logical Maximum (32000), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0x88, 0x13, /* Physical Maximum (5000), */ 0x26, 0x20, 0x4E, /* Logical Maximum (20000), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_twhl850_fixed0_size = sizeof(uclogic_rdesc_twhl850_fixed0_arr); /* Fixed PID 0522 tablet report descriptor, interface 1 (mouse) */ const __u8 uclogic_rdesc_twhl850_fixed1_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x02, /* Usage (Mouse), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x01, /* Report ID (1), */ 0x09, 0x01, /* Usage (Pointer), */ 0xA0, /* Collection (Physical), */ 0x05, 0x09, /* Usage Page (Button), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x03, /* Report Count (3), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x03, /* Usage Maximum (03h), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x16, 0x00, 0x80, /* Logical Minimum (-32768), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x09, 0x38, /* Usage (Wheel), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x01, /* Report Count (1), */ 0x75, 0x08, /* Report Size (8), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_twhl850_fixed1_size = sizeof(uclogic_rdesc_twhl850_fixed1_arr); /* Fixed PID 0522 tablet report descriptor, interface 2 (frame buttons) */ const __u8 uclogic_rdesc_twhl850_fixed2_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x06, /* Usage (Keyboard), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x03, /* Report ID (3), */ 0x05, 0x07, /* Usage Page (Keyboard), */ 0x14, /* Logical Minimum (0), */ 0x19, 0xE0, /* Usage Minimum (KB Leftcontrol), */ 0x29, 0xE7, /* Usage Maximum (KB Right GUI), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x08, /* Report Count (8), */ 0x81, 0x02, /* Input (Variable), */ 0x18, /* Usage Minimum (None), */ 0x29, 0xFF, /* Usage Maximum (FFh), */ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x06, /* Report Count (6), */ 0x80, /* Input, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_twhl850_fixed2_size = sizeof(uclogic_rdesc_twhl850_fixed2_arr); /* Fixed TWHA60 report descriptor, interface 0 (stylus) */ const __u8 uclogic_rdesc_twha60_fixed0_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x09, /* Report ID (9), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x04, /* Report Count (4), */ 0x81, 0x01, /* Input (Constant), */ 0x09, 0x32, /* Usage (In Range), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x14, /* Logical Minimum (0), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x65, 0x13, /* Unit (Inch), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0x10, 0x27, /* Physical Maximum (10000), */ 0x27, 0x3F, 0x9C, 0x00, 0x00, /* Logical Maximum (39999), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0x6A, 0x18, /* Physical Maximum (6250), */ 0x26, 0xA7, 0x61, /* Logical Maximum (24999), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_twha60_fixed0_size = sizeof(uclogic_rdesc_twha60_fixed0_arr); /* Fixed TWHA60 report descriptor, interface 1 (frame buttons) */ const __u8 uclogic_rdesc_twha60_fixed1_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x06, /* Usage (Keyboard), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x05, /* Report ID (5), */ 0x05, 0x07, /* Usage Page (Keyboard), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x08, /* Report Count (8), */ 0x81, 0x01, /* Input (Constant), */ 0x95, 0x0C, /* Report Count (12), */ 0x19, 0x3A, /* Usage Minimum (KB F1), */ 0x29, 0x45, /* Usage Maximum (KB F12), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x0C, /* Report Count (12), */ 0x19, 0x68, /* Usage Minimum (KB F13), */ 0x29, 0x73, /* Usage Maximum (KB F24), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x08, /* Report Count (8), */ 0x81, 0x01, /* Input (Constant), */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_twha60_fixed1_size = sizeof(uclogic_rdesc_twha60_fixed1_arr); /* Fixed report descriptor template for (tweaked) v1 pen reports */ const __u8 uclogic_rdesc_v1_pen_template_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x07, /* Report ID (7), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x09, 0x32, /* Usage (In Range), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x65, 0x13, /* Unit (Inch), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x27, UCLOGIC_RDESC_PEN_PH(X_LM), /* Logical Maximum (PLACEHOLDER), */ 0x47, UCLOGIC_RDESC_PEN_PH(X_PM), /* Physical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x27, UCLOGIC_RDESC_PEN_PH(Y_LM), /* Logical Maximum (PLACEHOLDER), */ 0x47, UCLOGIC_RDESC_PEN_PH(Y_PM), /* Physical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x27, UCLOGIC_RDESC_PEN_PH(PRESSURE_LM), /* Logical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_v1_pen_template_size = sizeof(uclogic_rdesc_v1_pen_template_arr); /* Fixed report descriptor template for (tweaked) v2 pen reports */ const __u8 uclogic_rdesc_v2_pen_template_arr[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x08, /* Report ID (8), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x09, 0x32, /* Usage (In Range), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x95, 0x01, /* Report Count (1), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x65, 0x13, /* Unit (Inch), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x75, 0x18, /* Report Size (24), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x27, UCLOGIC_RDESC_PEN_PH(X_LM), /* Logical Maximum (PLACEHOLDER), */ 0x47, UCLOGIC_RDESC_PEN_PH(X_PM), /* Physical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x27, UCLOGIC_RDESC_PEN_PH(Y_LM), /* Logical Maximum (PLACEHOLDER), */ 0x47, UCLOGIC_RDESC_PEN_PH(Y_PM), /* Physical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x75, 0x10, /* Report Size (16), */ 0x27, UCLOGIC_RDESC_PEN_PH(PRESSURE_LM), /* Logical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0x54, /* Unit Exponent (0), */ 0x65, 0x14, /* Unit (Degrees), */ 0x35, 0xC4, /* Physical Minimum (-60), */ 0x45, 0x3C, /* Physical Maximum (60), */ 0x15, 0xC4, /* Logical Minimum (-60), */ 0x25, 0x3C, /* Logical Maximum (60), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x02, /* Report Count (2), */ 0x09, 0x3D, /* Usage (X Tilt), */ 0x09, 0x3E, /* Usage (Y Tilt), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_v2_pen_template_size = sizeof(uclogic_rdesc_v2_pen_template_arr); /* * Expand to the contents of a generic frame buttons report descriptor. * * @_id: The report ID to use. * @_size: Size of the report to pad to, including report ID, bytes. */ #define UCLOGIC_RDESC_FRAME_BUTTONS_BYTES(_id, _size) \ 0x05, 0x01, /* Usage Page (Desktop), */ \ 0x09, 0x07, /* Usage (Keypad), */ \ 0xA1, 0x01, /* Collection (Application), */ \ 0x85, (_id), /* Report ID (_id), */ \ 0x14, /* Logical Minimum (0), */ \ 0x25, 0x01, /* Logical Maximum (1), */ \ 0x75, 0x01, /* Report Size (1), */ \ 0x05, 0x0D, /* Usage Page (Digitizer), */ \ 0x09, 0x39, /* Usage (Tablet Function Keys), */ \ 0xA0, /* Collection (Physical), */ \ 0x09, 0x44, /* Usage (Barrel Switch), */ \ 0x95, 0x01, /* Report Count (1), */ \ 0x81, 0x02, /* Input (Variable), */ \ 0x05, 0x01, /* Usage Page (Desktop), */ \ 0x09, 0x30, /* Usage (X), */ \ 0x09, 0x31, /* Usage (Y), */ \ 0x95, 0x02, /* Report Count (2), */ \ 0x81, 0x02, /* Input (Variable), */ \ 0x95, 0x15, /* Report Count (21), */ \ 0x81, 0x01, /* Input (Constant), */ \ 0x05, 0x09, /* Usage Page (Button), */ \ 0x19, 0x01, /* Usage Minimum (01h), */ \ 0x29, 0x0A, /* Usage Maximum (0Ah), */ \ 0x95, 0x0A, /* Report Count (10), */ \ 0x81, 0x02, /* Input (Variable), */ \ 0xC0, /* End Collection, */ \ 0x05, 0x01, /* Usage Page (Desktop), */ \ 0x09, 0x05, /* Usage (Gamepad), */ \ 0xA0, /* Collection (Physical), */ \ 0x05, 0x09, /* Usage Page (Button), */ \ 0x19, 0x01, /* Usage Minimum (01h), */ \ 0x29, 0x0A, /* Usage Maximum (0Ah), */ \ 0x95, 0x0A, /* Report Count (10), */ \ 0x81, 0x02, /* Input (Variable), */ \ 0x95, ((_size) * 8 - 52), \ /* Report Count (padding), */ \ 0x81, 0x01, /* Input (Constant), */ \ 0xC0, /* End Collection, */ \ 0xC0 /* End Collection */ /* Fixed report descriptor for (tweaked) v1 frame reports */ const __u8 uclogic_rdesc_v1_frame_arr[] = { UCLOGIC_RDESC_FRAME_BUTTONS_BYTES(UCLOGIC_RDESC_V1_FRAME_ID, 8) }; const size_t uclogic_rdesc_v1_frame_size = sizeof(uclogic_rdesc_v1_frame_arr); /* Fixed report descriptor for (tweaked) v2 frame button reports */ const __u8 uclogic_rdesc_v2_frame_buttons_arr[] = { UCLOGIC_RDESC_FRAME_BUTTONS_BYTES(UCLOGIC_RDESC_V2_FRAME_BUTTONS_ID, 12) }; const size_t uclogic_rdesc_v2_frame_buttons_size = sizeof(uclogic_rdesc_v2_frame_buttons_arr); /* Fixed report descriptor for (tweaked) v2 frame touch ring reports */ const __u8 uclogic_rdesc_v2_frame_touch_ring_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, UCLOGIC_RDESC_V2_FRAME_TOUCH_ID, /* Report ID (TOUCH_ID), */ 0x14, /* Logical Minimum (0), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x05, 0x09, /* Usage Page (Button), */ 0x09, 0x01, /* Usage (01h), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x07, /* Report Count (7), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x0A, 0xFF, 0xFF, /* Usage (FFFFh), */ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x38, /* Usage (Wheel), */ 0x95, 0x01, /* Report Count (1), */ 0x15, 0x00, /* Logical Minimum (0), */ 0x25, 0x0B, /* Logical Maximum (11), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x2E, /* Report Count (46), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_v2_frame_touch_ring_size = sizeof(uclogic_rdesc_v2_frame_touch_ring_arr); /* Fixed report descriptor for (tweaked) v2 frame touch strip reports */ const __u8 uclogic_rdesc_v2_frame_touch_strip_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, UCLOGIC_RDESC_V2_FRAME_TOUCH_ID, /* Report ID (TOUCH_ID), */ 0x14, /* Logical Minimum (0), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x05, 0x09, /* Usage Page (Button), */ 0x09, 0x01, /* Usage (01h), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x07, /* Report Count (7), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x0A, 0xFF, 0xFF, /* Usage (FFFFh), */ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x33, /* Usage (Rx), */ 0x09, 0x34, /* Usage (Ry), */ 0x95, 0x01, /* Report Count (1), */ 0x15, 0x00, /* Logical Minimum (0), */ 0x25, 0x07, /* Logical Maximum (7), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x2E, /* Report Count (46), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_v2_frame_touch_strip_size = sizeof(uclogic_rdesc_v2_frame_touch_strip_arr); /* Fixed report descriptor for (tweaked) v2 frame dial reports */ const __u8 uclogic_rdesc_v2_frame_dial_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, UCLOGIC_RDESC_V2_FRAME_DIAL_ID, /* Report ID (DIAL_ID), */ 0x14, /* Logical Minimum (0), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x09, /* Usage Page (Button), */ 0x09, 0x01, /* Usage (01h), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x06, /* Report Count (6), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x0A, 0xFF, 0xFF, /* Usage (FFFFh), */ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x38, /* Usage (Wheel), */ 0x95, 0x01, /* Report Count (1), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x2E, /* Report Count (46), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_v2_frame_dial_size = sizeof(uclogic_rdesc_v2_frame_dial_arr); const __u8 uclogic_ugee_v2_probe_arr[] = { 0x02, 0xb0, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; const size_t uclogic_ugee_v2_probe_size = sizeof(uclogic_ugee_v2_probe_arr); const int uclogic_ugee_v2_probe_endpoint = 0x03; /* Fixed report descriptor template for UGEE v2 pen reports */ const __u8 uclogic_rdesc_ugee_v2_pen_template_arr[] = { 0x05, 0x0d, /* Usage Page (Digitizers), */ 0x09, 0x01, /* Usage (Digitizer), */ 0xa1, 0x01, /* Collection (Application), */ 0x85, 0x02, /* Report ID (2), */ 0x09, 0x20, /* Usage (Stylus), */ 0xa1, 0x00, /* Collection (Physical), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x03, /* Report Count (3), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x09, 0x32, /* Usage (In Range), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x35, 0x00, /* Physical Minimum (0), */ 0xa4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x30, /* Usage (X), */ 0x65, 0x13, /* Unit (Inch), */ 0x55, 0x0d, /* Unit Exponent (-3), */ 0x27, UCLOGIC_RDESC_PEN_PH(X_LM), /* Logical Maximum (PLACEHOLDER), */ 0x47, UCLOGIC_RDESC_PEN_PH(X_PM), /* Physical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x27, UCLOGIC_RDESC_PEN_PH(Y_LM), /* Logical Maximum (PLACEHOLDER), */ 0x47, UCLOGIC_RDESC_PEN_PH(Y_PM), /* Physical Maximum (PLACEHOLDER), */ 0x81, 0x02, /* Input (Variable), */ 0xb4, /* Pop, */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x45, 0x00, /* Physical Maximum (0), */ 0x27, UCLOGIC_RDESC_PEN_PH(PRESSURE_LM), /* Logical Maximum (PLACEHOLDER), */ 0x75, 0x0D, /* Report Size (13), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x01, /* Input (Constant), */ 0x09, 0x3d, /* Usage (X Tilt), */ 0x35, 0xC3, /* Physical Minimum (-61), */ 0x45, 0x3C, /* Physical Maximum (60), */ 0x15, 0xC3, /* Logical Minimum (-61), */ 0x25, 0x3C, /* Logical Maximum (60), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x3e, /* Usage (Y Tilt), */ 0x35, 0xC3, /* Physical Minimum (-61), */ 0x45, 0x3C, /* Physical Maximum (60), */ 0x15, 0xC3, /* Logical Minimum (-61), */ 0x25, 0x3C, /* Logical Maximum (60), */ 0x81, 0x02, /* Input (Variable), */ 0xc0, /* End Collection, */ 0xc0, /* End Collection */ }; const size_t uclogic_rdesc_ugee_v2_pen_template_size = sizeof(uclogic_rdesc_ugee_v2_pen_template_arr); /* Fixed report descriptor template for UGEE v2 frame reports (buttons only) */ const __u8 uclogic_rdesc_ugee_v2_frame_btn_template_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, UCLOGIC_RDESC_V1_FRAME_ID, /* Report ID, */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x08, /* Report Count (8), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ UCLOGIC_RDESC_FRAME_PH_BTN, /* Usage Maximum (PLACEHOLDER), */ 0x95, 0x0A, /* Report Count (10), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x46, /* Report Count (70), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_ugee_v2_frame_btn_template_size = sizeof(uclogic_rdesc_ugee_v2_frame_btn_template_arr); /* Fixed report descriptor template for UGEE v2 frame reports (dial) */ const __u8 uclogic_rdesc_ugee_v2_frame_dial_template_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, UCLOGIC_RDESC_V1_FRAME_ID, /* Report ID, */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x08, /* Report Count (8), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ UCLOGIC_RDESC_FRAME_PH_BTN, /* Usage Maximum (PLACEHOLDER), */ 0x95, 0x0A, /* Report Count (10), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x06, /* Report Count (6), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x38, /* Usage (Wheel), */ 0x95, 0x01, /* Report Count (1), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_ugee_v2_frame_dial_template_size = sizeof(uclogic_rdesc_ugee_v2_frame_dial_template_arr); /* Fixed report descriptor template for UGEE v2 frame reports (mouse) */ const __u8 uclogic_rdesc_ugee_v2_frame_mouse_template_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x02, /* Usage (Mouse), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x01, /* Report ID (1), */ 0x05, 0x01, /* Usage Page (Pointer), */ 0xA0, /* Collection (Physical), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x02, /* Report Count (2), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x02, /* Usage Maximum (02h), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x06, /* Report Count (6), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x01, /* Usage Page (Generic Desktop), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x02, /* Report Count (2), */ 0x16, 0x00, 0x80, /* Logical Minimum (-32768), */ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_ugee_v2_frame_mouse_template_size = sizeof(uclogic_rdesc_ugee_v2_frame_mouse_template_arr); /* Fixed report descriptor template for UGEE v2 battery reports */ const __u8 uclogic_rdesc_ugee_v2_battery_template_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, UCLOGIC_RDESC_UGEE_V2_BATTERY_ID, /* Report ID, */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x84, /* Usage Page (Power Device), */ 0x05, 0x85, /* Usage Page (Battery System), */ 0x09, 0x65, /* Usage Page (AbsoluteStateOfCharge), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x01, /* Report Count (1), */ 0x15, 0x00, /* Logical Minimum (0), */ 0x26, 0xff, 0x00, /* Logical Maximum (255), */ 0x81, 0x02, /* Input (Variable), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x01, /* Report Count (1), */ 0x15, 0x00, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x09, 0x44, /* Usage Page (Charging), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x07, /* Report Count (7), */ 0x81, 0x01, /* Input (Constant), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x07, /* Report Count (7), */ 0x81, 0x01, /* Input (Constant), */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_ugee_v2_battery_template_size = sizeof(uclogic_rdesc_ugee_v2_battery_template_arr); /* Fixed report descriptor for Ugee EX07 frame */ const __u8 uclogic_rdesc_ugee_ex07_frame_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x06, /* Report ID (6), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x05, 0x09, /* Usage Page (Button), */ 0x75, 0x01, /* Report Size (1), */ 0x19, 0x03, /* Usage Minimum (03h), */ 0x29, 0x06, /* Usage Maximum (06h), */ 0x95, 0x04, /* Report Count (4), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x1A, /* Report Count (26), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x02, /* Usage Maximum (02h), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_ugee_ex07_frame_size = sizeof(uclogic_rdesc_ugee_ex07_frame_arr); /* Fixed report descriptor for Ugee G5 frame controls */ const __u8 uclogic_rdesc_ugee_g5_frame_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x06, /* Report ID (6), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x05, /* Usage Maximum (05h), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x02, /* Input (Variable), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x0A, 0xFF, 0xFF, /* Usage (FFFFh), */ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x0B, /* Report Count (11), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x38, /* Usage (Wheel), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x02, /* Report Size (2), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_ugee_g5_frame_size = sizeof(uclogic_rdesc_ugee_g5_frame_arr); /* Fixed report descriptor for XP-Pen Deco 01 frame controls */ const __u8 uclogic_rdesc_xppen_deco01_frame_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x06, /* Report ID (6), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x08, /* Usage Maximum (08h), */ 0x95, 0x08, /* Report Count (8), */ 0x81, 0x02, /* Input (Variable), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x30, /* Usage (X), */ 0x09, 0x31, /* Usage (Y), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x15, /* Report Count (21), */ 0x81, 0x01, /* Input (Constant), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; const size_t uclogic_rdesc_xppen_deco01_frame_size = sizeof(uclogic_rdesc_xppen_deco01_frame_arr); /* Fixed report descriptor for XP-Pen Arist 22R Pro frame */ const __u8 uclogic_rdesc_xppen_artist_22r_pro_frame_arr[] = { 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x07, /* Usage (Keypad), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, UCLOGIC_RDESC_V1_FRAME_ID, /* Report ID (Virtual report), */ 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x39, /* Usage (Tablet Function Keys), */ 0xA0, /* Collection (Physical), */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x08, /* Report Count (8), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x09, /* Usage Page (Button), */ 0x19, 0x01, /* Usage Minimum (01h), */ 0x29, 0x14, /* Usage Maximum (14h), */ 0x95, 0x14, /* Report Count (20), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x14, /* Report Count (20), */ 0x81, 0x01, /* Input (Constant), */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x38, /* Usage (Wheel), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x01, /* Report Count (1), */ 0x15, 0xFF, /* Logical Minimum (-1), */ 0x25, 0x08, /* Logical Maximum (8), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x05, 0x0C, /* Usage Page (Consumer Devices), */ 0x0A, 0x38, 0x02, /* Usage (AC PAN), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x02, /* Input (Variable), */ 0xC0, /* End Collection */ 0xC0, /* End Collection */ }; const size_t uclogic_rdesc_xppen_artist_22r_pro_frame_size = sizeof(uclogic_rdesc_xppen_artist_22r_pro_frame_arr); /** * uclogic_rdesc_template_apply() - apply report descriptor parameters to a * report descriptor template, creating a report descriptor. Copies the * template over to the new report descriptor and replaces every occurrence of * the template placeholders, followed by an index byte, with the value from the * parameter list at that index. * * @template_ptr: Pointer to the template buffer. * @template_size: Size of the template buffer. * @param_list: List of template parameters. * @param_num: Number of parameters in the list. * * Returns: * Kmalloc-allocated pointer to the created report descriptor, * or NULL if allocation failed. */ __u8 *uclogic_rdesc_template_apply(const __u8 *template_ptr, size_t template_size, const s32 *param_list, size_t param_num) { static const __u8 btn_head[] = {UCLOGIC_RDESC_FRAME_PH_BTN_HEAD}; static const __u8 pen_head[] = {UCLOGIC_RDESC_PEN_PH_HEAD}; __u8 *rdesc_ptr; __u8 *p; s32 v; rdesc_ptr = kmemdup(template_ptr, template_size, GFP_KERNEL); if (rdesc_ptr == NULL) return NULL; for (p = rdesc_ptr; p + sizeof(btn_head) < rdesc_ptr + template_size;) { if (p + sizeof(pen_head) < rdesc_ptr + template_size && memcmp(p, pen_head, sizeof(pen_head)) == 0 && p[sizeof(pen_head)] < param_num) { v = param_list[p[sizeof(pen_head)]]; put_unaligned((__force u32)cpu_to_le32(v), (s32 *)p); p += sizeof(pen_head) + 1; } else if (memcmp(p, btn_head, sizeof(btn_head)) == 0 && p[sizeof(btn_head)] < param_num) { v = param_list[p[sizeof(btn_head)]]; put_unaligned((__u8)0x2A, p); /* Usage Maximum */ put_unaligned((__force u16)cpu_to_le16(v), (s16 *)(p + 1)); p += sizeof(btn_head) + 1; } else { p++; } } return rdesc_ptr; } EXPORT_SYMBOL_IF_KUNIT(uclogic_rdesc_template_apply); |
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1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 | // SPDX-License-Identifier: GPL-2.0 or MIT /* * Copyright (C) 2016 Noralf Trønnes * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <linux/export.h> #include <linux/io.h> #include <linux/iosys-map.h> #include <linux/module.h> #include <linux/slab.h> #include <drm/drm_device.h> #include <drm/drm_format_helper.h> #include <drm/drm_framebuffer.h> #include <drm/drm_fourcc.h> #include <drm/drm_print.h> #include <drm/drm_rect.h> #include "drm_format_internal.h" /** * drm_format_conv_state_init - Initialize format-conversion state * @state: The state to initialize * * Clears all fields in struct drm_format_conv_state. The state will * be empty with no preallocated resources. */ void drm_format_conv_state_init(struct drm_format_conv_state *state) { state->tmp.mem = NULL; state->tmp.size = 0; state->tmp.preallocated = false; } EXPORT_SYMBOL(drm_format_conv_state_init); /** * drm_format_conv_state_copy - Copy format-conversion state * @state: Destination state * @old_state: Source state * * Copies format-conversion state from @old_state to @state; except for * temporary storage. */ void drm_format_conv_state_copy(struct drm_format_conv_state *state, const struct drm_format_conv_state *old_state) { /* * So far, there's only temporary storage here, which we don't * duplicate. Just clear the fields. */ state->tmp.mem = NULL; state->tmp.size = 0; state->tmp.preallocated = false; } EXPORT_SYMBOL(drm_format_conv_state_copy); /** * drm_format_conv_state_reserve - Allocates storage for format conversion * @state: The format-conversion state * @new_size: The minimum allocation size * @flags: Flags for kmalloc() * * Allocates at least @new_size bytes and returns a pointer to the memory * range. After calling this function, previously returned memory blocks * are invalid. It's best to collect all memory requirements of a format * conversion and call this function once to allocate the range. * * Returns: * A pointer to the allocated memory range, or NULL otherwise. */ void *drm_format_conv_state_reserve(struct drm_format_conv_state *state, size_t new_size, gfp_t flags) { void *mem; if (new_size <= state->tmp.size) goto out; else if (state->tmp.preallocated) return NULL; mem = krealloc(state->tmp.mem, new_size, flags); if (!mem) return NULL; state->tmp.mem = mem; state->tmp.size = new_size; out: return state->tmp.mem; } EXPORT_SYMBOL(drm_format_conv_state_reserve); /** * drm_format_conv_state_release - Releases an format-conversion storage * @state: The format-conversion state * * Releases the memory range references by the format-conversion state. * After this call, all pointers to the memory are invalid. Prefer * drm_format_conv_state_init() for cleaning up and unloading a driver. */ void drm_format_conv_state_release(struct drm_format_conv_state *state) { if (state->tmp.preallocated) return; kfree(state->tmp.mem); state->tmp.mem = NULL; state->tmp.size = 0; } EXPORT_SYMBOL(drm_format_conv_state_release); static unsigned int clip_offset(const struct drm_rect *clip, unsigned int pitch, unsigned int cpp) { return clip->y1 * pitch + clip->x1 * cpp; } /** * drm_fb_clip_offset - Returns the clipping rectangles byte-offset in a framebuffer * @pitch: Framebuffer line pitch in byte * @format: Framebuffer format * @clip: Clip rectangle * * Returns: * The byte offset of the clip rectangle's top-left corner within the framebuffer. */ unsigned int drm_fb_clip_offset(unsigned int pitch, const struct drm_format_info *format, const struct drm_rect *clip) { return clip_offset(clip, pitch, format->cpp[0]); } EXPORT_SYMBOL(drm_fb_clip_offset); /* TODO: Make this function work with multi-plane formats. */ static int __drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long dst_pixsize, const void *vaddr, const struct drm_framebuffer *fb, const struct drm_rect *clip, bool vaddr_cached_hint, struct drm_format_conv_state *state, void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) { unsigned long linepixels = drm_rect_width(clip); unsigned long lines = drm_rect_height(clip); size_t sbuf_len = linepixels * fb->format->cpp[0]; void *stmp = NULL; unsigned long i; const void *sbuf; /* * Some source buffers, such as DMA memory, use write-combine * caching, so reads are uncached. Speed up access by fetching * one line at a time. */ if (!vaddr_cached_hint) { stmp = drm_format_conv_state_reserve(state, sbuf_len, GFP_KERNEL); if (!stmp) return -ENOMEM; } if (!dst_pitch) dst_pitch = drm_rect_width(clip) * dst_pixsize; vaddr += clip_offset(clip, fb->pitches[0], fb->format->cpp[0]); for (i = 0; i < lines; ++i) { if (stmp) sbuf = memcpy(stmp, vaddr, sbuf_len); else sbuf = vaddr; xfrm_line(dst, sbuf, linepixels); vaddr += fb->pitches[0]; dst += dst_pitch; } return 0; } /* TODO: Make this function work with multi-plane formats. */ static int __drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch, unsigned long dst_pixsize, const void *vaddr, const struct drm_framebuffer *fb, const struct drm_rect *clip, bool vaddr_cached_hint, struct drm_format_conv_state *state, void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) { unsigned long linepixels = drm_rect_width(clip); unsigned long lines = drm_rect_height(clip); size_t dbuf_len = linepixels * dst_pixsize; size_t stmp_off = round_up(dbuf_len, ARCH_KMALLOC_MINALIGN); /* for sbuf alignment */ size_t sbuf_len = linepixels * fb->format->cpp[0]; void *stmp = NULL; unsigned long i; const void *sbuf; void *dbuf; if (vaddr_cached_hint) { dbuf = drm_format_conv_state_reserve(state, dbuf_len, GFP_KERNEL); } else { dbuf = drm_format_conv_state_reserve(state, stmp_off + sbuf_len, GFP_KERNEL); stmp = dbuf + stmp_off; } if (!dbuf) return -ENOMEM; if (!dst_pitch) dst_pitch = linepixels * dst_pixsize; vaddr += clip_offset(clip, fb->pitches[0], fb->format->cpp[0]); for (i = 0; i < lines; ++i) { if (stmp) sbuf = memcpy(stmp, vaddr, sbuf_len); else sbuf = vaddr; xfrm_line(dbuf, sbuf, linepixels); memcpy_toio(dst, dbuf, dbuf_len); vaddr += fb->pitches[0]; dst += dst_pitch; } return 0; } /* TODO: Make this function work with multi-plane formats. */ static int drm_fb_xfrm(struct iosys_map *dst, const unsigned int *dst_pitch, const u8 *dst_pixsize, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, bool vaddr_cached_hint, struct drm_format_conv_state *state, void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) { static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { 0, 0, 0, 0 }; if (!dst_pitch) dst_pitch = default_dst_pitch; /* TODO: handle src in I/O memory here */ if (dst[0].is_iomem) return __drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], dst_pixsize[0], src[0].vaddr, fb, clip, vaddr_cached_hint, state, xfrm_line); else return __drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], dst_pixsize[0], src[0].vaddr, fb, clip, vaddr_cached_hint, state, xfrm_line); } #define ALIGN_DOWN_PIXELS(end, n, a) \ ((end) - ((n) & ((a) - 1))) static __always_inline void drm_fb_xfrm_line_32to8(void *dbuf, const void *sbuf, unsigned int pixels, u32 (*xfrm_pixel)(u32)) { __le32 *dbuf32 = dbuf; u8 *dbuf8; const __le32 *sbuf32 = sbuf; const __le32 *send32 = sbuf32 + pixels; /* write 4 pixels at once */ while (sbuf32 < ALIGN_DOWN_PIXELS(send32, pixels, 4)) { u32 pix[4] = { le32_to_cpup(sbuf32), le32_to_cpup(sbuf32 + 1), le32_to_cpup(sbuf32 + 2), le32_to_cpup(sbuf32 + 3), }; /* write output bytes in reverse order for little endianness */ u32 val32 = xfrm_pixel(pix[0]) | (xfrm_pixel(pix[1]) << 8) | (xfrm_pixel(pix[2]) << 16) | (xfrm_pixel(pix[3]) << 24); *dbuf32++ = cpu_to_le32(val32); sbuf32 += ARRAY_SIZE(pix); } /* write trailing pixels */ dbuf8 = (u8 __force *)dbuf32; while (sbuf32 < send32) *dbuf8++ = xfrm_pixel(le32_to_cpup(sbuf32++)); } static __always_inline void drm_fb_xfrm_line_32to16(void *dbuf, const void *sbuf, unsigned int pixels, u32 (*xfrm_pixel)(u32)) { __le64 *dbuf64 = dbuf; __le32 *dbuf32; __le16 *dbuf16; const __le32 *sbuf32 = sbuf; const __le32 *send32 = sbuf32 + pixels; #if defined(CONFIG_64BIT) /* write 4 pixels at once */ while (sbuf32 < ALIGN_DOWN_PIXELS(send32, pixels, 4)) { u32 pix[4] = { le32_to_cpup(sbuf32), le32_to_cpup(sbuf32 + 1), le32_to_cpup(sbuf32 + 2), le32_to_cpup(sbuf32 + 3), }; /* write output bytes in reverse order for little endianness */ u64 val64 = ((u64)xfrm_pixel(pix[0])) | ((u64)xfrm_pixel(pix[1]) << 16) | ((u64)xfrm_pixel(pix[2]) << 32) | ((u64)xfrm_pixel(pix[3]) << 48); *dbuf64++ = cpu_to_le64(val64); sbuf32 += ARRAY_SIZE(pix); } #endif /* write 2 pixels at once */ dbuf32 = (__le32 __force *)dbuf64; while (sbuf32 < ALIGN_DOWN_PIXELS(send32, pixels, 2)) { u32 pix[2] = { le32_to_cpup(sbuf32), le32_to_cpup(sbuf32 + 1), }; /* write output bytes in reverse order for little endianness */ u32 val32 = xfrm_pixel(pix[0]) | (xfrm_pixel(pix[1]) << 16); *dbuf32++ = cpu_to_le32(val32); sbuf32 += ARRAY_SIZE(pix); } /* write trailing pixel */ dbuf16 = (__le16 __force *)dbuf32; while (sbuf32 < send32) *dbuf16++ = cpu_to_le16(xfrm_pixel(le32_to_cpup(sbuf32++))); } static __always_inline void drm_fb_xfrm_line_32to24(void *dbuf, const void *sbuf, unsigned int pixels, u32 (*xfrm_pixel)(u32)) { __le32 *dbuf32 = dbuf; u8 *dbuf8; const __le32 *sbuf32 = sbuf; const __le32 *send32 = sbuf32 + pixels; /* write pixels in chunks of 4 */ while (sbuf32 < ALIGN_DOWN_PIXELS(send32, pixels, 4)) { u32 val24[4] = { xfrm_pixel(le32_to_cpup(sbuf32)), xfrm_pixel(le32_to_cpup(sbuf32 + 1)), xfrm_pixel(le32_to_cpup(sbuf32 + 2)), xfrm_pixel(le32_to_cpup(sbuf32 + 3)), }; u32 out32[3] = { /* write output bytes in reverse order for little endianness */ ((val24[0] & 0x000000ff)) | ((val24[0] & 0x0000ff00)) | ((val24[0] & 0x00ff0000)) | ((val24[1] & 0x000000ff) << 24), ((val24[1] & 0x0000ff00) >> 8) | ((val24[1] & 0x00ff0000) >> 8) | ((val24[2] & 0x000000ff) << 16) | ((val24[2] & 0x0000ff00) << 16), ((val24[2] & 0x00ff0000) >> 16) | ((val24[3] & 0x000000ff) << 8) | ((val24[3] & 0x0000ff00) << 8) | ((val24[3] & 0x00ff0000) << 8), }; *dbuf32++ = cpu_to_le32(out32[0]); *dbuf32++ = cpu_to_le32(out32[1]); *dbuf32++ = cpu_to_le32(out32[2]); sbuf32 += ARRAY_SIZE(val24); } /* write trailing pixel */ dbuf8 = (u8 __force *)dbuf32; while (sbuf32 < send32) { u32 val24 = xfrm_pixel(le32_to_cpup(sbuf32++)); /* write output in reverse order for little endianness */ *dbuf8++ = (val24 & 0x000000ff); *dbuf8++ = (val24 & 0x0000ff00) >> 8; *dbuf8++ = (val24 & 0x00ff0000) >> 16; } } static __always_inline void drm_fb_xfrm_line_32to32(void *dbuf, const void *sbuf, unsigned int pixels, u32 (*xfrm_pixel)(u32)) { __le32 *dbuf32 = dbuf; const __le32 *sbuf32 = sbuf; const __le32 *send32 = sbuf32 + pixels; while (sbuf32 < send32) *dbuf32++ = cpu_to_le32(xfrm_pixel(le32_to_cpup(sbuf32++))); } /** * drm_fb_memcpy - Copy clip buffer * @dst: Array of destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * * This function copies parts of a framebuffer to display memory. Destination and * framebuffer formats must match. No conversion takes place. The parameters @dst, * @dst_pitch and @src refer to arrays. Each array must have at least as many entries * as there are planes in @fb's format. Each entry stores the value for the format's * respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). */ void drm_fb_memcpy(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip) { static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { 0, 0, 0, 0 }; const struct drm_format_info *format = fb->format; unsigned int i, y, lines = drm_rect_height(clip); if (!dst_pitch) dst_pitch = default_dst_pitch; for (i = 0; i < format->num_planes; ++i) { unsigned int bpp_i = drm_format_info_bpp(format, i); unsigned int cpp_i = DIV_ROUND_UP(bpp_i, 8); size_t len_i = DIV_ROUND_UP(drm_rect_width(clip) * bpp_i, 8); unsigned int dst_pitch_i = dst_pitch[i]; struct iosys_map dst_i = dst[i]; struct iosys_map src_i = src[i]; if (!dst_pitch_i) dst_pitch_i = len_i; iosys_map_incr(&src_i, clip_offset(clip, fb->pitches[i], cpp_i)); for (y = 0; y < lines; y++) { /* TODO: handle src_i in I/O memory here */ iosys_map_memcpy_to(&dst_i, 0, src_i.vaddr, len_i); iosys_map_incr(&src_i, fb->pitches[i]); iosys_map_incr(&dst_i, dst_pitch_i); } } } EXPORT_SYMBOL(drm_fb_memcpy); static void drm_fb_swab16_line(void *dbuf, const void *sbuf, unsigned int pixels) { u16 *dbuf16 = dbuf; const u16 *sbuf16 = sbuf; const u16 *send16 = sbuf16 + pixels; while (sbuf16 < send16) *dbuf16++ = swab16(*sbuf16++); } static void drm_fb_swab32_line(void *dbuf, const void *sbuf, unsigned int pixels) { u32 *dbuf32 = dbuf; const u32 *sbuf32 = sbuf; const u32 *send32 = sbuf32 + pixels; while (sbuf32 < send32) *dbuf32++ = swab32(*sbuf32++); } /** * drm_fb_swab - Swap bytes into clip buffer * @dst: Array of destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @cached: Source buffer is mapped cached (eg. not write-combined) * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and swaps per-pixel * bytes during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. If @cached is * false a temporary buffer is used to cache one pixel line at a time to speed up * slow uncached reads. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). */ void drm_fb_swab(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, bool cached, struct drm_format_conv_state *state) { const struct drm_format_info *format = fb->format; u8 cpp = DIV_ROUND_UP(drm_format_info_bpp(format, 0), 8); void (*swab_line)(void *dbuf, const void *sbuf, unsigned int npixels); switch (cpp) { case 4: swab_line = drm_fb_swab32_line; break; case 2: swab_line = drm_fb_swab16_line; break; default: drm_warn_once(fb->dev, "Format %p4cc has unsupported pixel size.\n", &format->format); return; } drm_fb_xfrm(dst, dst_pitch, &cpp, src, fb, clip, cached, state, swab_line); } EXPORT_SYMBOL(drm_fb_swab); static void drm_fb_xrgb8888_to_rgb332_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to8(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_rgb332); } /** * drm_fb_xrgb8888_to_rgb332 - Convert XRGB8888 to RGB332 clip buffer * @dst: Array of RGB332 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for RGB332 devices that don't support XRGB8888 natively. */ void drm_fb_xrgb8888_to_rgb332(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 1, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_rgb332_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb332); static void drm_fb_xrgb8888_to_rgb565_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to16(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_rgb565); } /** * drm_fb_xrgb8888_to_rgb565 - Convert XRGB8888 to RGB565 clip buffer * @dst: Array of RGB565 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for RGB565 devices that don't support XRGB8888 natively. */ void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 2, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_rgb565_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565); static void drm_fb_xrgb8888_to_rgb565be_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to16(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_rgb565be); } /** * drm_fb_xrgb8888_to_rgb565be - Convert XRGB8888 to RGB565|DRM_FORMAT_BIG_ENDIAN clip buffer * @dst: Array of RGB565BE destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for RGB565BE devices that don't support XRGB8888 natively. */ void drm_fb_xrgb8888_to_rgb565be(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 2, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_rgb565be_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565be); static void drm_fb_xrgb8888_to_xrgb1555_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to16(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_xrgb1555); } /** * drm_fb_xrgb8888_to_xrgb1555 - Convert XRGB8888 to XRGB1555 clip buffer * @dst: Array of XRGB1555 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts * the color format during the process. The parameters @dst, @dst_pitch and * @src refer to arrays. Each array must have at least as many entries as * there are planes in @fb's format. Each entry stores the value for the * format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for XRGB1555 devices that don't support * XRGB8888 natively. */ void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 2, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_xrgb1555_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb1555); static void drm_fb_xrgb8888_to_argb1555_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to16(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_argb1555); } /** * drm_fb_xrgb8888_to_argb1555 - Convert XRGB8888 to ARGB1555 clip buffer * @dst: Array of ARGB1555 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts * the color format during the process. The parameters @dst, @dst_pitch and * @src refer to arrays. Each array must have at least as many entries as * there are planes in @fb's format. Each entry stores the value for the * format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for ARGB1555 devices that don't support * XRGB8888 natively. It sets an opaque alpha channel as part of the conversion. */ void drm_fb_xrgb8888_to_argb1555(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 2, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_argb1555_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb1555); static void drm_fb_xrgb8888_to_rgba5551_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to16(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_rgba5551); } /** * drm_fb_xrgb8888_to_rgba5551 - Convert XRGB8888 to RGBA5551 clip buffer * @dst: Array of RGBA5551 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts * the color format during the process. The parameters @dst, @dst_pitch and * @src refer to arrays. Each array must have at least as many entries as * there are planes in @fb's format. Each entry stores the value for the * format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for RGBA5551 devices that don't support * XRGB8888 natively. It sets an opaque alpha channel as part of the conversion. */ void drm_fb_xrgb8888_to_rgba5551(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 2, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_rgba5551_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgba5551); static void drm_fb_xrgb8888_to_rgb888_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to24(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_rgb888); } /** * drm_fb_xrgb8888_to_rgb888 - Convert XRGB8888 to RGB888 clip buffer * @dst: Array of RGB888 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for RGB888 devices that don't natively * support XRGB8888. */ void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 3, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_rgb888_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb888); static void drm_fb_xrgb8888_to_bgr888_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to24(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_bgr888); } /** * drm_fb_xrgb8888_to_bgr888 - Convert XRGB8888 to BGR888 clip buffer * @dst: Array of BGR888 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for BGR888 devices that don't natively * support XRGB8888. */ void drm_fb_xrgb8888_to_bgr888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 3, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_bgr888_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_bgr888); static void drm_fb_xrgb8888_to_argb8888_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_argb8888); } /** * drm_fb_xrgb8888_to_argb8888 - Convert XRGB8888 to ARGB8888 clip buffer * @dst: Array of ARGB8888 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. The parameters @dst, @dst_pitch and @src refer * to arrays. Each array must have at least as many entries as there are planes in * @fb's format. Each entry stores the value for the format's respective color plane * at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for ARGB8888 devices that don't support XRGB8888 * natively. It sets an opaque alpha channel as part of the conversion. */ void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 4, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_argb8888_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb8888); static void drm_fb_xrgb8888_to_abgr8888_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_abgr8888); } /** * drm_fb_xrgb8888_to_abgr8888 - Convert XRGB8888 to ABGR8888 clip buffer * @dst: Array of ABGR8888 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. The parameters @dst, @dst_pitch and @src refer * to arrays. Each array must have at least as many entries as there are planes in * @fb's format. Each entry stores the value for the format's respective color plane * at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for ABGR8888 devices that don't support XRGB8888 * natively. It sets an opaque alpha channel as part of the conversion. */ void drm_fb_xrgb8888_to_abgr8888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 4, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_abgr8888_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_abgr8888); static void drm_fb_xrgb8888_to_xbgr8888_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_xbgr8888); } /** * drm_fb_xrgb8888_to_xbgr8888 - Convert XRGB8888 to XBGR8888 clip buffer * @dst: Array of XBGR8888 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. The parameters @dst, @dst_pitch and @src refer * to arrays. Each array must have at least as many entries as there are planes in * @fb's format. Each entry stores the value for the format's respective color plane * at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for XBGR8888 devices that don't support XRGB8888 * natively. */ void drm_fb_xrgb8888_to_xbgr8888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 4, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_xbgr8888_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_xbgr8888); static void drm_fb_xrgb8888_to_bgrx8888_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_bgrx8888); } /** * drm_fb_xrgb8888_to_bgrx8888 - Convert XRGB8888 to BGRX8888 clip buffer * @dst: Array of BGRX8888 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. The parameters @dst, @dst_pitch and @src refer * to arrays. Each array must have at least as many entries as there are planes in * @fb's format. Each entry stores the value for the format's respective color plane * at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for BGRX8888 devices that don't support XRGB8888 * natively. */ void drm_fb_xrgb8888_to_bgrx8888(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 4, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_bgrx8888_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_bgrx8888); static void drm_fb_xrgb8888_to_xrgb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_xrgb2101010); } /** * drm_fb_xrgb8888_to_xrgb2101010 - Convert XRGB8888 to XRGB2101010 clip buffer * @dst: Array of XRGB2101010 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for XRGB2101010 devices that don't support XRGB8888 * natively. */ void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 4, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_xrgb2101010_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010); static void drm_fb_xrgb8888_to_argb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_argb2101010); } /** * drm_fb_xrgb8888_to_argb2101010 - Convert XRGB8888 to ARGB2101010 clip buffer * @dst: Array of ARGB2101010 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts * the color format during the process. The parameters @dst, @dst_pitch and * @src refer to arrays. Each array must have at least as many entries as * there are planes in @fb's format. Each entry stores the value for the * format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for ARGB2101010 devices that don't support XRGB8888 * natively. */ void drm_fb_xrgb8888_to_argb2101010(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 4, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_argb2101010_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb2101010); static void drm_fb_xrgb8888_to_gray8_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to8(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_r8_bt601); } /** * drm_fb_xrgb8888_to_gray8 - Convert XRGB8888 to grayscale * @dst: Array of 8-bit grayscale destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * DRM doesn't have native monochrome or grayscale support. Drivers can use this * function for grayscale devices that don't support XRGB8888 natively.Such * drivers can announce the commonly supported XR24 format to userspace and use * this function to convert to the native format. Monochrome drivers will use the * most significant bit, where 1 means foreground color and 0 background color. * ITU BT.601 is being used for the RGB -> luma (brightness) conversion. */ void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 1, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_xrgb8888_to_gray8_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_gray8); static void drm_fb_argb8888_to_argb4444_line(void *dbuf, const void *sbuf, unsigned int pixels) { drm_fb_xfrm_line_32to16(dbuf, sbuf, pixels, drm_pixel_argb8888_to_argb4444); } /** * drm_fb_argb8888_to_argb4444 - Convert ARGB8888 to ARGB4444 clip buffer * @dst: Array of ARGB4444 destination buffers * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of ARGB8888 source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts * the color format during the process. The parameters @dst, @dst_pitch and * @src refer to arrays. Each array must have at least as many entries as * there are planes in @fb's format. Each entry stores the value for the * format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Drivers can use this function for ARGB4444 devices that don't support * ARGB8888 natively. */ void drm_fb_argb8888_to_argb4444(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 2, }; drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, drm_fb_argb8888_to_argb4444_line); } EXPORT_SYMBOL(drm_fb_argb8888_to_argb4444); /** * drm_fb_blit - Copy parts of a framebuffer to display memory * @dst: Array of display-memory addresses to copy to * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @dst_format: FOURCC code of the display's color format * @src: The framebuffer memory to copy from * @fb: The framebuffer to copy from * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory. If the * formats of the display and the framebuffer mismatch, the blit function * will attempt to convert between them during the process. The parameters @dst, * @dst_pitch and @src refer to arrays. Each array must have at least as many * entries as there are planes in @dst_format's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). * * Returns: * 0 on success, or * -EINVAL if the color-format conversion failed, or * a negative error code otherwise. */ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { uint32_t fb_format = fb->format->format; if (fb_format == dst_format) { drm_fb_memcpy(dst, dst_pitch, src, fb, clip); return 0; } else if (fb_format == (dst_format | DRM_FORMAT_BIG_ENDIAN)) { drm_fb_swab(dst, dst_pitch, src, fb, clip, false, state); return 0; } else if (fb_format == (dst_format & ~DRM_FORMAT_BIG_ENDIAN)) { drm_fb_swab(dst, dst_pitch, src, fb, clip, false, state); return 0; } else if (fb_format == DRM_FORMAT_XRGB8888) { if (dst_format == DRM_FORMAT_RGB565) { drm_fb_xrgb8888_to_rgb565(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_XRGB1555) { drm_fb_xrgb8888_to_xrgb1555(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_ARGB1555) { drm_fb_xrgb8888_to_argb1555(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_RGBA5551) { drm_fb_xrgb8888_to_rgba5551(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_RGB888) { drm_fb_xrgb8888_to_rgb888(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_BGR888) { drm_fb_xrgb8888_to_bgr888(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_ARGB8888) { drm_fb_xrgb8888_to_argb8888(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_XBGR8888) { drm_fb_xrgb8888_to_xbgr8888(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_ABGR8888) { drm_fb_xrgb8888_to_abgr8888(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_XRGB2101010) { drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_ARGB2101010) { drm_fb_xrgb8888_to_argb2101010(dst, dst_pitch, src, fb, clip, state); return 0; } else if (dst_format == DRM_FORMAT_BGRX8888) { drm_fb_swab(dst, dst_pitch, src, fb, clip, false, state); return 0; } else if (dst_format == DRM_FORMAT_RGB332) { drm_fb_xrgb8888_to_rgb332(dst, dst_pitch, src, fb, clip, state); return 0; } } drm_warn_once(fb->dev, "No conversion helper from %p4cc to %p4cc found.\n", &fb_format, &dst_format); return -EINVAL; } EXPORT_SYMBOL(drm_fb_blit); static void drm_fb_gray8_to_gray2_line(void *dbuf, const void *sbuf, unsigned int pixels) { u8 *dbuf8 = dbuf; const u8 *sbuf8 = sbuf; u8 px; while (pixels) { unsigned int i, bits = min(pixels, 4U); u8 byte = 0; for (i = 0; i < bits; i++, pixels--) { byte >>= 2; px = (*sbuf8++ * 3 + 127) / 255; byte |= (px &= 0x03) << 6; } *dbuf8++ = byte; } } static void drm_fb_gray8_to_mono_line(void *dbuf, const void *sbuf, unsigned int pixels) { u8 *dbuf8 = dbuf; const u8 *sbuf8 = sbuf; while (pixels) { unsigned int i, bits = min(pixels, 8U); u8 byte = 0; for (i = 0; i < bits; i++, pixels--) { if (*sbuf8++ >= 128) byte |= BIT(i); } *dbuf8++ = byte; } } /** * drm_fb_xrgb8888_to_mono - Convert XRGB8888 to monochrome * @dst: Array of monochrome destination buffers (0=black, 1=white) * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). The first pixel (upper left corner of the clip rectangle) will * be converted and copied to the first bit (LSB) in the first byte of the monochrome * destination buffer. If the caller requires that the first pixel in a byte must * be located at an x-coordinate that is a multiple of 8, then the caller must take * care itself of supplying a suitable clip rectangle. * * DRM doesn't have native monochrome support. Drivers can use this function for * monochrome devices that don't support XRGB8888 natively. Such drivers can * announce the commonly supported XR24 format to userspace and use this function * to convert to the native format. * * This function uses drm_fb_xrgb8888_to_gray8() to convert to grayscale and * then the result is converted from grayscale to monochrome. */ void drm_fb_xrgb8888_to_mono(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { 0, 0, 0, 0 }; unsigned int linepixels = drm_rect_width(clip); unsigned int lines = drm_rect_height(clip); unsigned int cpp = fb->format->cpp[0]; unsigned int len_src32 = linepixels * cpp; struct drm_device *dev = fb->dev; void *vaddr = src[0].vaddr; unsigned int dst_pitch_0; unsigned int y; u8 *mono = dst[0].vaddr, *gray8; u32 *src32; if (drm_WARN_ON(dev, fb->format->format != DRM_FORMAT_XRGB8888)) return; if (!dst_pitch) dst_pitch = default_dst_pitch; dst_pitch_0 = dst_pitch[0]; /* * The mono destination buffer contains 1 bit per pixel */ if (!dst_pitch_0) dst_pitch_0 = DIV_ROUND_UP(linepixels, 8); /* * The dma memory is write-combined so reads are uncached. * Speed up by fetching one line at a time. * * Also, format conversion from XR24 to monochrome are done * line-by-line but are converted to 8-bit grayscale as an * intermediate step. * * Allocate a buffer to be used for both copying from the cma * memory and to store the intermediate grayscale line pixels. */ src32 = drm_format_conv_state_reserve(state, len_src32 + linepixels, GFP_KERNEL); if (!src32) return; gray8 = (u8 *)src32 + len_src32; vaddr += clip_offset(clip, fb->pitches[0], cpp); for (y = 0; y < lines; y++) { src32 = memcpy(src32, vaddr, len_src32); drm_fb_xrgb8888_to_gray8_line(gray8, src32, linepixels); drm_fb_gray8_to_mono_line(mono, gray8, linepixels); vaddr += fb->pitches[0]; mono += dst_pitch_0; } } EXPORT_SYMBOL(drm_fb_xrgb8888_to_mono); /** * drm_fb_xrgb8888_to_gray2 - Convert XRGB8888 to gray2 * @dst: Array of gray2 destination buffer * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines * within @dst; can be NULL if scanlines are stored next to each other. * @src: Array of XRGB8888 source buffers * @fb: DRM framebuffer * @clip: Clip rectangle area to copy * @state: Transform and conversion state * * This function copies parts of a framebuffer to display memory and converts the * color format during the process. Destination and framebuffer formats must match. The * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at * least as many entries as there are planes in @fb's format. Each entry stores the * value for the format's respective color plane at the same index. * * This function does not apply clipping on @dst (i.e. the destination is at the * top-left corner). The first pixel (upper left corner of the clip rectangle) will * be converted and copied to the two first bits (LSB) in the first byte of the gray2 * destination buffer. If the caller requires that the first pixel in a byte must * be located at an x-coordinate that is a multiple of 8, then the caller must take * care itself of supplying a suitable clip rectangle. * * DRM doesn't have native gray2 support. Drivers can use this function for * gray2 devices that don't support XRGB8888 natively. Such drivers can * announce the commonly supported XR24 format to userspace and use this function * to convert to the native format. * */ void drm_fb_xrgb8888_to_gray2(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state) { static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { 0, 0, 0, 0 }; unsigned int linepixels = drm_rect_width(clip); unsigned int lines = drm_rect_height(clip); unsigned int cpp = fb->format->cpp[0]; unsigned int len_src32 = linepixels * cpp; struct drm_device *dev = fb->dev; void *vaddr = src[0].vaddr; unsigned int dst_pitch_0; unsigned int y; u8 *gray2 = dst[0].vaddr, *gray8; u32 *src32; if (drm_WARN_ON(dev, fb->format->format != DRM_FORMAT_XRGB8888)) return; if (!dst_pitch) dst_pitch = default_dst_pitch; dst_pitch_0 = dst_pitch[0]; /* * The gray2 destination buffer contains 2 bit per pixel */ if (!dst_pitch_0) dst_pitch_0 = DIV_ROUND_UP(linepixels, 4); /* * The dma memory is write-combined so reads are uncached. * Speed up by fetching one line at a time. * * Also, format conversion from XR24 to gray2 are done * line-by-line but are converted to 8-bit grayscale as an * intermediate step. * * Allocate a buffer to be used for both copying from the cma * memory and to store the intermediate grayscale line pixels. */ src32 = drm_format_conv_state_reserve(state, len_src32 + linepixels, GFP_KERNEL); if (!src32) return; gray8 = (u8 *)src32 + len_src32; vaddr += clip_offset(clip, fb->pitches[0], cpp); for (y = 0; y < lines; y++) { src32 = memcpy(src32, vaddr, len_src32); drm_fb_xrgb8888_to_gray8_line(gray8, src32, linepixels); drm_fb_gray8_to_gray2_line(gray2, gray8, linepixels); vaddr += fb->pitches[0]; gray2 += dst_pitch_0; } } EXPORT_SYMBOL(drm_fb_xrgb8888_to_gray2); |
| 1 3 1 3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | // SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for some cherry "special" devices * * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc * Copyright (c) 2006-2007 Jiri Kosina * Copyright (c) 2008 Jiri Slaby */ /* */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" /* * Cherry Cymotion keyboard have an invalid HID report descriptor, * that needs fixing before we can parse it. */ static const __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) { hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n"); rdesc[11] = rdesc[16] = 0xff; rdesc[12] = rdesc[17] = 0x03; } return rdesc; } #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ EV_KEY, (c)) static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) return 0; switch (usage->hid & HID_USAGE) { case 0x301: ch_map_key_clear(KEY_PROG1); break; case 0x302: ch_map_key_clear(KEY_PROG2); break; case 0x303: ch_map_key_clear(KEY_PROG3); break; default: return 0; } return 1; } static const struct hid_device_id ch_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) }, { } }; MODULE_DEVICE_TABLE(hid, ch_devices); static struct hid_driver ch_driver = { .name = "cherry", .id_table = ch_devices, .report_fixup = ch_report_fixup, .input_mapping = ch_input_mapping, }; module_hid_driver(ch_driver); MODULE_DESCRIPTION("HID driver for some cherry \"special\" devices"); MODULE_LICENSE("GPL"); |
| 6 10 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Compact binary representation of ihex records. Some devices need their * firmware loaded in strange orders rather than a single big blob, but * actually parsing ihex-as-text within the kernel seems silly. Thus,... */ #ifndef __LINUX_IHEX_H__ #define __LINUX_IHEX_H__ #include <linux/types.h> #include <linux/firmware.h> #include <linux/device.h> /* Intel HEX files actually limit the length to 256 bytes, but we have drivers which would benefit from using separate records which are longer than that, so we extend to 16 bits of length */ struct ihex_binrec { __be32 addr; __be16 len; uint8_t data[]; } __attribute__((packed)); static inline uint16_t ihex_binrec_size(const struct ihex_binrec *p) { return be16_to_cpu(p->len) + sizeof(*p); } /* Find the next record, taking into account the 4-byte alignment */ static inline const struct ihex_binrec * __ihex_next_binrec(const struct ihex_binrec *rec) { const void *p = rec; return p + ALIGN(ihex_binrec_size(rec), 4); } static inline const struct ihex_binrec * ihex_next_binrec(const struct ihex_binrec *rec) { rec = __ihex_next_binrec(rec); return be16_to_cpu(rec->len) ? rec : NULL; } /* Check that ihex_next_binrec() won't take us off the end of the image... */ static inline int ihex_validate_fw(const struct firmware *fw) { const struct ihex_binrec *end, *rec; rec = (const void *)fw->data; end = (const void *)&fw->data[fw->size - sizeof(*end)]; for (; rec <= end; rec = __ihex_next_binrec(rec)) { /* Zero length marks end of records */ if (rec == end && !be16_to_cpu(rec->len)) return 0; } return -EINVAL; } /* Request firmware and validate it so that we can trust we won't * run off the end while reading records... */ static inline int request_ihex_firmware(const struct firmware **fw, const char *fw_name, struct device *dev) { const struct firmware *lfw; int ret; ret = request_firmware(&lfw, fw_name, dev); if (ret) return ret; ret = ihex_validate_fw(lfw); if (ret) { dev_err(dev, "Firmware \"%s\" not valid IHEX records\n", fw_name); release_firmware(lfw); return ret; } *fw = lfw; return 0; } #endif /* __LINUX_IHEX_H__ */ |
| 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 | /* SPDX-License-Identifier: GPL-2.0-only */ /* * platform_device.h - generic, centralized driver model * * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org> * * See Documentation/driver-api/driver-model/ for more information. */ #ifndef _PLATFORM_DEVICE_H_ #define _PLATFORM_DEVICE_H_ #include <linux/device.h> #define PLATFORM_DEVID_NONE (-1) #define PLATFORM_DEVID_AUTO (-2) struct irq_affinity; struct mfd_cell; struct property_entry; struct platform_device_id; struct platform_device { const char *name; int id; bool id_auto; struct device dev; u64 platform_dma_mask; struct device_dma_parameters dma_parms; u32 num_resources; struct resource *resource; const struct platform_device_id *id_entry; /* * Driver name to force a match. Do not set directly, because core * frees it. Use driver_set_override() to set or clear it. */ const char *driver_override; /* MFD cell pointer */ struct mfd_cell *mfd_cell; /* arch specific additions */ struct pdev_archdata archdata; }; #define platform_get_device_id(pdev) ((pdev)->id_entry) #define dev_is_platform(dev) ((dev)->bus == &platform_bus_type) #define to_platform_device(x) container_of((x), struct platform_device, dev) extern int platform_device_register(struct platform_device *); extern void platform_device_unregister(struct platform_device *); extern const struct bus_type platform_bus_type; extern struct device platform_bus; extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int); extern struct resource *platform_get_mem_or_io(struct platform_device *, unsigned int); extern struct device * platform_find_device_by_driver(struct device *start, const struct device_driver *drv); #ifdef CONFIG_HAS_IOMEM extern void __iomem * devm_platform_get_and_ioremap_resource(struct platform_device *pdev, unsigned int index, struct resource **res); extern void __iomem * devm_platform_ioremap_resource(struct platform_device *pdev, unsigned int index); extern void __iomem * devm_platform_ioremap_resource_byname(struct platform_device *pdev, const char *name); #else static inline void __iomem * devm_platform_get_and_ioremap_resource(struct platform_device *pdev, unsigned int index, struct resource **res) { return ERR_PTR(-EINVAL); } static inline void __iomem * devm_platform_ioremap_resource(struct platform_device *pdev, unsigned int index) { return ERR_PTR(-EINVAL); } static inline void __iomem * devm_platform_ioremap_resource_byname(struct platform_device *pdev, const char *name) { return ERR_PTR(-EINVAL); } #endif extern int platform_get_irq(struct platform_device *, unsigned int); extern int platform_get_irq_optional(struct platform_device *, unsigned int); extern int platform_irq_count(struct platform_device *); extern int devm_platform_get_irqs_affinity(struct platform_device *dev, struct irq_affinity *affd, unsigned int minvec, unsigned int maxvec, int **irqs); extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, const char *); extern int platform_get_irq_byname(struct platform_device *, const char *); extern int platform_get_irq_byname_optional(struct platform_device *dev, const char *name); extern int platform_add_devices(struct platform_device **, int); struct platform_device_info { struct device *parent; struct fwnode_handle *fwnode; bool of_node_reused; const char *name; int id; const struct resource *res; unsigned int num_res; const void *data; size_t size_data; u64 dma_mask; const struct property_entry *properties; }; extern struct platform_device *platform_device_register_full( const struct platform_device_info *pdevinfo); /** * platform_device_register_resndata - add a platform-level device with * resources and platform-specific data * * @parent: parent device for the device we're adding * @name: base name of the device we're adding * @id: instance id * @res: set of resources that needs to be allocated for the device * @num: number of resources * @data: platform specific data for this platform device * @size: size of platform specific data * * Returns &struct platform_device pointer on success, or ERR_PTR() on error. */ static inline struct platform_device *platform_device_register_resndata( struct device *parent, const char *name, int id, const struct resource *res, unsigned int num, const void *data, size_t size) { struct platform_device_info pdevinfo = { .parent = parent, .name = name, .id = id, .res = res, .num_res = num, .data = data, .size_data = size, .dma_mask = 0, }; return platform_device_register_full(&pdevinfo); } /** * platform_device_register_simple - add a platform-level device and its resources * @name: base name of the device we're adding * @id: instance id * @res: set of resources that needs to be allocated for the device * @num: number of resources * * This function creates a simple platform device that requires minimal * resource and memory management. Canned release function freeing memory * allocated for the device allows drivers using such devices to be * unloaded without waiting for the last reference to the device to be * dropped. * * This interface is primarily intended for use with legacy drivers which * probe hardware directly. Because such drivers create sysfs device nodes * themselves, rather than letting system infrastructure handle such device * enumeration tasks, they don't fully conform to the Linux driver model. * In particular, when such drivers are built as modules, they can't be * "hotplugged". * * Returns &struct platform_device pointer on success, or ERR_PTR() on error. */ static inline struct platform_device *platform_device_register_simple( const char *name, int id, const struct resource *res, unsigned int num) { return platform_device_register_resndata(NULL, name, id, res, num, NULL, 0); } /** * platform_device_register_data - add a platform-level device with platform-specific data * @parent: parent device for the device we're adding * @name: base name of the device we're adding * @id: instance id * @data: platform specific data for this platform device * @size: size of platform specific data * * This function creates a simple platform device that requires minimal * resource and memory management. Canned release function freeing memory * allocated for the device allows drivers using such devices to be * unloaded without waiting for the last reference to the device to be * dropped. * * Returns &struct platform_device pointer on success, or ERR_PTR() on error. */ static inline struct platform_device *platform_device_register_data( struct device *parent, const char *name, int id, const void *data, size_t size) { return platform_device_register_resndata(parent, name, id, NULL, 0, data, size); } extern struct platform_device *platform_device_alloc(const char *name, int id); extern int platform_device_add_resources(struct platform_device *pdev, const struct resource *res, unsigned int num); extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size); extern int platform_device_add(struct platform_device *pdev); extern void platform_device_del(struct platform_device *pdev); extern void platform_device_put(struct platform_device *pdev); struct platform_driver { int (*probe)(struct platform_device *); void (*remove)(struct platform_device *); void (*shutdown)(struct platform_device *); int (*suspend)(struct platform_device *, pm_message_t state); int (*resume)(struct platform_device *); struct device_driver driver; const struct platform_device_id *id_table; bool prevent_deferred_probe; /* * For most device drivers, no need to care about this flag as long as * all DMAs are handled through the kernel DMA API. For some special * ones, for example VFIO drivers, they know how to manage the DMA * themselves and set this flag so that the IOMMU layer will allow them * to setup and manage their own I/O address space. */ bool driver_managed_dma; }; #define to_platform_driver(drv) (container_of((drv), struct platform_driver, \ driver)) /* * use a macro to avoid include chaining to get THIS_MODULE */ #define platform_driver_register(drv) \ __platform_driver_register(drv, THIS_MODULE) extern int __platform_driver_register(struct platform_driver *, struct module *); extern void platform_driver_unregister(struct platform_driver *); /* non-hotpluggable platform devices may use this so that probe() and * its support may live in __init sections, conserving runtime memory. */ #define platform_driver_probe(drv, probe) \ __platform_driver_probe(drv, probe, THIS_MODULE) extern int __platform_driver_probe(struct platform_driver *driver, int (*probe)(struct platform_device *), struct module *module); static inline void *platform_get_drvdata(const struct platform_device *pdev) { return dev_get_drvdata(&pdev->dev); } static inline void platform_set_drvdata(struct platform_device *pdev, void *data) { dev_set_drvdata(&pdev->dev, data); } /* module_platform_driver() - Helper macro for drivers that don't do * anything special in module init/exit. This eliminates a lot of * boilerplate. Each module may only use this macro once, and * calling it replaces module_init() and module_exit() */ #define module_platform_driver(__platform_driver) \ module_driver(__platform_driver, platform_driver_register, \ platform_driver_unregister) /* builtin_platform_driver() - Helper macro for builtin drivers that * don't do anything special in driver init. This eliminates some * boilerplate. Each driver may only use this macro once, and * calling it replaces device_initcall(). Note this is meant to be * a parallel of module_platform_driver() above, but w/o _exit stuff. */ #define builtin_platform_driver(__platform_driver) \ builtin_driver(__platform_driver, platform_driver_register) /* module_platform_driver_probe() - Helper macro for drivers that don't do * anything special in module init/exit. This eliminates a lot of * boilerplate. Each module may only use this macro once, and * calling it replaces module_init() and module_exit() */ #define module_platform_driver_probe(__platform_driver, __platform_probe) \ static int __init __platform_driver##_init(void) \ { \ return platform_driver_probe(&(__platform_driver), \ __platform_probe); \ } \ module_init(__platform_driver##_init); \ static void __exit __platform_driver##_exit(void) \ { \ platform_driver_unregister(&(__platform_driver)); \ } \ module_exit(__platform_driver##_exit); /* builtin_platform_driver_probe() - Helper macro for drivers that don't do * anything special in device init. This eliminates some boilerplate. Each * driver may only use this macro once, and using it replaces device_initcall. * This is meant to be a parallel of module_platform_driver_probe above, but * without the __exit parts. */ #define builtin_platform_driver_probe(__platform_driver, __platform_probe) \ static int __init __platform_driver##_init(void) \ { \ return platform_driver_probe(&(__platform_driver), \ __platform_probe); \ } \ device_initcall(__platform_driver##_init); \ #define platform_create_bundle(driver, probe, res, n_res, data, size) \ __platform_create_bundle(driver, probe, res, n_res, data, size, THIS_MODULE) extern struct platform_device *__platform_create_bundle( struct platform_driver *driver, int (*probe)(struct platform_device *), struct resource *res, unsigned int n_res, const void *data, size_t size, struct module *module); int __platform_register_drivers(struct platform_driver * const *drivers, unsigned int count, struct module *owner); void platform_unregister_drivers(struct platform_driver * const *drivers, unsigned int count); #define platform_register_drivers(drivers, count) \ __platform_register_drivers(drivers, count, THIS_MODULE) #ifdef CONFIG_SUSPEND extern int platform_pm_suspend(struct device *dev); extern int platform_pm_resume(struct device *dev); #else #define platform_pm_suspend NULL #define platform_pm_resume NULL #endif #ifdef CONFIG_HIBERNATE_CALLBACKS extern int platform_pm_freeze(struct device *dev); extern int platform_pm_thaw(struct device *dev); extern int platform_pm_poweroff(struct device *dev); extern int platform_pm_restore(struct device *dev); #else #define platform_pm_freeze NULL #define platform_pm_thaw NULL #define platform_pm_poweroff NULL #define platform_pm_restore NULL #endif #ifdef CONFIG_PM_SLEEP #define USE_PLATFORM_PM_SLEEP_OPS \ .suspend = platform_pm_suspend, \ .resume = platform_pm_resume, \ .freeze = platform_pm_freeze, \ .thaw = platform_pm_thaw, \ .poweroff = platform_pm_poweroff, \ .restore = platform_pm_restore, #else #define USE_PLATFORM_PM_SLEEP_OPS #endif #ifndef CONFIG_SUPERH /* * REVISIT: This stub is needed for all non-SuperH users of early platform * drivers. It should go away once we introduce the new platform_device-based * early driver framework. */ static inline int is_sh_early_platform_device(struct platform_device *pdev) { return 0; } #endif /* CONFIG_SUPERH */ /* For now only SuperH uses it */ void early_platform_cleanup(void); #endif /* _PLATFORM_DEVICE_H_ */ |
| 5 5 64 64 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 | // SPDX-License-Identifier: GPL-2.0-or-later /* * uvc_status.c -- USB Video Class driver - Status endpoint * * Copyright (C) 2005-2009 * Laurent Pinchart (laurent.pinchart@ideasonboard.com) */ #include <asm/barrier.h> #include <linux/kernel.h> #include <linux/input.h> #include <linux/slab.h> #include <linux/usb.h> #include <linux/usb/input.h> #include "uvcvideo.h" /* -------------------------------------------------------------------------- * Input device */ #ifdef CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV static bool uvc_input_has_button(struct uvc_device *dev) { struct uvc_streaming *stream; /* * The device has button events if both bTriggerSupport and * bTriggerUsage are one. Otherwise the camera button does not * exist or is handled automatically by the camera without host * driver or client application intervention. */ list_for_each_entry(stream, &dev->streams, list) { if (stream->header.bTriggerSupport == 1 && stream->header.bTriggerUsage == 1) return true; } return false; } static int uvc_input_init(struct uvc_device *dev) { struct input_dev *input; int ret; if (!uvc_input_has_button(dev)) return 0; input = input_allocate_device(); if (input == NULL) return -ENOMEM; usb_make_path(dev->udev, dev->input_phys, sizeof(dev->input_phys)); strlcat(dev->input_phys, "/button", sizeof(dev->input_phys)); input->name = dev->name; input->phys = dev->input_phys; usb_to_input_id(dev->udev, &input->id); input->dev.parent = &dev->intf->dev; __set_bit(EV_KEY, input->evbit); __set_bit(KEY_CAMERA, input->keybit); ret = input_register_device(input); if (ret < 0) goto error; dev->input = input; return 0; error: input_free_device(input); return ret; } static void uvc_input_unregister(struct uvc_device *dev) { if (dev->input) input_unregister_device(dev->input); } static void uvc_input_report_key(struct uvc_device *dev, unsigned int code, int value) { if (dev->input) { input_report_key(dev->input, code, value); input_sync(dev->input); } } #else #define uvc_input_init(dev) #define uvc_input_unregister(dev) #define uvc_input_report_key(dev, code, value) #endif /* CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV */ /* -------------------------------------------------------------------------- * Status interrupt endpoint */ static void uvc_event_streaming(struct uvc_device *dev, struct uvc_status *status, int len) { if (len <= offsetof(struct uvc_status, bEvent)) { uvc_dbg(dev, STATUS, "Invalid streaming status event received\n"); return; } if (status->bEvent == 0) { if (len <= offsetof(struct uvc_status, streaming)) return; uvc_dbg(dev, STATUS, "Button (intf %u) %s len %d\n", status->bOriginator, status->streaming.button ? "pressed" : "released", len); uvc_input_report_key(dev, KEY_CAMERA, status->streaming.button); } else { uvc_dbg(dev, STATUS, "Stream %u error event %02x len %d\n", status->bOriginator, status->bEvent, len); } } #define UVC_CTRL_VALUE_CHANGE 0 #define UVC_CTRL_INFO_CHANGE 1 #define UVC_CTRL_FAILURE_CHANGE 2 #define UVC_CTRL_MIN_CHANGE 3 #define UVC_CTRL_MAX_CHANGE 4 static struct uvc_control *uvc_event_entity_find_ctrl(struct uvc_entity *entity, u8 selector) { struct uvc_control *ctrl; unsigned int i; for (i = 0, ctrl = entity->controls; i < entity->ncontrols; i++, ctrl++) if (ctrl->info.selector == selector) return ctrl; return NULL; } static struct uvc_control *uvc_event_find_ctrl(struct uvc_device *dev, const struct uvc_status *status, struct uvc_video_chain **chain) { list_for_each_entry((*chain), &dev->chains, list) { struct uvc_entity *entity; struct uvc_control *ctrl; list_for_each_entry(entity, &(*chain)->entities, chain) { if (entity->id != status->bOriginator) continue; ctrl = uvc_event_entity_find_ctrl(entity, status->control.bSelector); if (ctrl) return ctrl; } } return NULL; } static bool uvc_event_control(struct urb *urb, const struct uvc_status *status, int len) { static const char *attrs[] = { "value", "info", "failure", "min", "max" }; struct uvc_device *dev = urb->context; struct uvc_video_chain *chain; struct uvc_control *ctrl; if (len < 6 || status->bEvent != 0 || status->control.bAttribute >= ARRAY_SIZE(attrs)) { uvc_dbg(dev, STATUS, "Invalid control status event received\n"); return false; } uvc_dbg(dev, STATUS, "Control %u/%u %s change len %d\n", status->bOriginator, status->control.bSelector, attrs[status->control.bAttribute], len); /* Find the control. */ ctrl = uvc_event_find_ctrl(dev, status, &chain); if (!ctrl) return false; switch (status->control.bAttribute) { case UVC_CTRL_VALUE_CHANGE: return uvc_ctrl_status_event_async(urb, chain, ctrl, status->control.bValue); case UVC_CTRL_INFO_CHANGE: case UVC_CTRL_FAILURE_CHANGE: case UVC_CTRL_MIN_CHANGE: case UVC_CTRL_MAX_CHANGE: break; } return false; } static void uvc_status_complete(struct urb *urb) { struct uvc_device *dev = urb->context; int len, ret; switch (urb->status) { case 0: break; case -ENOENT: /* usb_kill_urb() called. */ case -ECONNRESET: /* usb_unlink_urb() called. */ case -ESHUTDOWN: /* The endpoint is being disabled. */ case -EPROTO: /* Device is disconnected (reported by some host controllers). */ return; default: dev_warn(&dev->intf->dev, "Non-zero status (%d) in status completion handler.\n", urb->status); return; } len = urb->actual_length; if (len > 0) { switch (dev->status->bStatusType & 0x0f) { case UVC_STATUS_TYPE_CONTROL: { if (uvc_event_control(urb, dev->status, len)) /* The URB will be resubmitted in work context. */ return; break; } case UVC_STATUS_TYPE_STREAMING: { uvc_event_streaming(dev, dev->status, len); break; } default: uvc_dbg(dev, STATUS, "Unknown status event type %u\n", dev->status->bStatusType); break; } } /* Resubmit the URB. */ urb->interval = dev->int_ep->desc.bInterval; ret = usb_submit_urb(urb, GFP_ATOMIC); if (ret < 0) dev_err(&dev->intf->dev, "Failed to resubmit status URB (%d).\n", ret); } int uvc_status_init(struct uvc_device *dev) { struct usb_host_endpoint *ep = dev->int_ep; unsigned int pipe; int interval; mutex_init(&dev->status_lock); if (ep == NULL) return 0; dev->status = kzalloc(sizeof(*dev->status), GFP_KERNEL); if (!dev->status) return -ENOMEM; dev->int_urb = usb_alloc_urb(0, GFP_KERNEL); if (!dev->int_urb) { kfree(dev->status); dev->status = NULL; return -ENOMEM; } pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress); /* * For high-speed interrupt endpoints, the bInterval value is used as * an exponent of two. Some developers forgot about it. */ interval = ep->desc.bInterval; if (interval > 16 && dev->udev->speed == USB_SPEED_HIGH && (dev->quirks & UVC_QUIRK_STATUS_INTERVAL)) interval = fls(interval) - 1; usb_fill_int_urb(dev->int_urb, dev->udev, pipe, dev->status, sizeof(*dev->status), uvc_status_complete, dev, interval); uvc_input_init(dev); return 0; } void uvc_status_unregister(struct uvc_device *dev) { if (!dev->status) return; uvc_status_suspend(dev); uvc_input_unregister(dev); } void uvc_status_cleanup(struct uvc_device *dev) { usb_free_urb(dev->int_urb); kfree(dev->status); } static int uvc_status_start(struct uvc_device *dev, gfp_t flags) { lockdep_assert_held(&dev->status_lock); if (!dev->int_urb) return 0; return usb_submit_urb(dev->int_urb, flags); } static void uvc_status_stop(struct uvc_device *dev) { struct uvc_ctrl_work *w = &dev->async_ctrl; lockdep_assert_held(&dev->status_lock); if (!dev->int_urb) return; /* * Prevent the asynchronous control handler from requeing the URB. The * barrier is needed so the flush_status change is visible to other * CPUs running the asynchronous handler before usb_kill_urb() is * called below. */ smp_store_release(&dev->flush_status, true); /* * Cancel any pending asynchronous work. If any status event was queued, * process it synchronously. */ if (cancel_work_sync(&w->work)) uvc_ctrl_status_event(w->chain, w->ctrl, w->data); /* Kill the urb. */ usb_kill_urb(dev->int_urb); /* * The URB completion handler may have queued asynchronous work. This * won't resubmit the URB as flush_status is set, but it needs to be * cancelled before returning or it could then race with a future * uvc_status_start() call. */ if (cancel_work_sync(&w->work)) uvc_ctrl_status_event(w->chain, w->ctrl, w->data); /* * From this point, there are no events on the queue and the status URB * is dead. No events will be queued until uvc_status_start() is called. * The barrier is needed to make sure that flush_status is visible to * uvc_ctrl_status_event_work() when uvc_status_start() will be called * again. */ smp_store_release(&dev->flush_status, false); } int uvc_status_resume(struct uvc_device *dev) { guard(mutex)(&dev->status_lock); if (dev->status_users) return uvc_status_start(dev, GFP_NOIO); return 0; } void uvc_status_suspend(struct uvc_device *dev) { guard(mutex)(&dev->status_lock); if (dev->status_users) uvc_status_stop(dev); } int uvc_status_get(struct uvc_device *dev) { int ret; guard(mutex)(&dev->status_lock); if (!dev->status_users) { ret = uvc_status_start(dev, GFP_KERNEL); if (ret) return ret; } dev->status_users++; return 0; } void uvc_status_put(struct uvc_device *dev) { guard(mutex)(&dev->status_lock); if (dev->status_users == 1) uvc_status_stop(dev); WARN_ON(!dev->status_users); if (dev->status_users) dev->status_users--; } |
| 1941 698 1 418 417 408 1 1 416 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __X86_KERNEL_FPU_CONTEXT_H #define __X86_KERNEL_FPU_CONTEXT_H #include <asm/fpu/xstate.h> #include <asm/trace/fpu.h> /* Functions related to FPU context tracking */ /* * The in-register FPU state for an FPU context on a CPU is assumed to be * valid if the fpu->last_cpu matches the CPU, and the fpu_fpregs_owner_ctx * matches the FPU. * * If the FPU register state is valid, the kernel can skip restoring the * FPU state from memory. * * Any code that clobbers the FPU registers or updates the in-memory * FPU state for a task MUST let the rest of the kernel know that the * FPU registers are no longer valid for this task. * * Invalidate a resource you control: CPU if using the CPU for something else * (with preemption disabled), FPU for the current task, or a task that * is prevented from running by the current task. */ static inline void __cpu_invalidate_fpregs_state(void) { __this_cpu_write(fpu_fpregs_owner_ctx, NULL); } static inline void __fpu_invalidate_fpregs_state(struct fpu *fpu) { fpu->last_cpu = -1; } static inline int fpregs_state_valid(struct fpu *fpu, unsigned int cpu) { return fpu == this_cpu_read(fpu_fpregs_owner_ctx) && cpu == fpu->last_cpu; } static inline void fpregs_deactivate(struct fpu *fpu) { __this_cpu_write(fpu_fpregs_owner_ctx, NULL); trace_x86_fpu_regs_deactivated(fpu); } static inline void fpregs_activate(struct fpu *fpu) { __this_cpu_write(fpu_fpregs_owner_ctx, fpu); trace_x86_fpu_regs_activated(fpu); } /* Internal helper for switch_fpu_return() and signal frame setup */ static inline void fpregs_restore_userregs(void) { struct fpu *fpu = x86_task_fpu(current); int cpu = smp_processor_id(); if (WARN_ON_ONCE(current->flags & (PF_KTHREAD | PF_USER_WORKER))) return; if (!fpregs_state_valid(fpu, cpu)) { /* * This restores _all_ xstate which has not been * established yet. * * If PKRU is enabled, then the PKRU value is already * correct because it was either set in switch_to() or in * flush_thread(). So it is excluded because it might be * not up to date in current->thread.fpu->xsave state. * * XFD state is handled in restore_fpregs_from_fpstate(). */ restore_fpregs_from_fpstate(fpu->fpstate, XFEATURE_MASK_FPSTATE); fpregs_activate(fpu); fpu->last_cpu = cpu; } clear_thread_flag(TIF_NEED_FPU_LOAD); } #endif |
| 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 | /* SPDX-License-Identifier: GPL-2.0 */ #undef TRACE_SYSTEM #define TRACE_SYSTEM spi #if !defined(_TRACE_SPI_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_SPI_H #include <linux/ktime.h> #include <linux/tracepoint.h> DECLARE_EVENT_CLASS(spi_controller, TP_PROTO(struct spi_controller *controller), TP_ARGS(controller), TP_STRUCT__entry( __field( int, bus_num ) ), TP_fast_assign( __entry->bus_num = controller->bus_num; ), TP_printk("spi%d", (int)__entry->bus_num) ); DEFINE_EVENT(spi_controller, spi_controller_idle, TP_PROTO(struct spi_controller *controller), TP_ARGS(controller) ); DEFINE_EVENT(spi_controller, spi_controller_busy, TP_PROTO(struct spi_controller *controller), TP_ARGS(controller) ); TRACE_EVENT(spi_setup, TP_PROTO(struct spi_device *spi, int status), TP_ARGS(spi, status), TP_STRUCT__entry( __field(int, bus_num) __field(int, chip_select) __field(unsigned long, mode) __field(unsigned int, bits_per_word) __field(unsigned int, max_speed_hz) __field(int, status) ), TP_fast_assign( __entry->bus_num = spi->controller->bus_num; __entry->chip_select = spi_get_chipselect(spi, 0); __entry->mode = spi->mode; __entry->bits_per_word = spi->bits_per_word; __entry->max_speed_hz = spi->max_speed_hz; __entry->status = status; ), TP_printk("spi%d.%d setup mode %lu, %s%s%s%s%u bits/w, %u Hz max --> %d", __entry->bus_num, __entry->chip_select, (__entry->mode & SPI_MODE_X_MASK), (__entry->mode & SPI_CS_HIGH) ? "cs_high, " : "", (__entry->mode & SPI_LSB_FIRST) ? "lsb, " : "", (__entry->mode & SPI_3WIRE) ? "3wire, " : "", (__entry->mode & SPI_LOOP) ? "loopback, " : "", __entry->bits_per_word, __entry->max_speed_hz, __entry->status) ); TRACE_EVENT(spi_set_cs, TP_PROTO(struct spi_device *spi, bool enable), TP_ARGS(spi, enable), TP_STRUCT__entry( __field(int, bus_num) __field(int, chip_select) __field(unsigned long, mode) __field(bool, enable) ), TP_fast_assign( __entry->bus_num = spi->controller->bus_num; __entry->chip_select = spi_get_chipselect(spi, 0); __entry->mode = spi->mode; __entry->enable = enable; ), TP_printk("spi%d.%d %s%s", __entry->bus_num, __entry->chip_select, __entry->enable ? "activate" : "deactivate", (__entry->mode & SPI_CS_HIGH) ? ", cs_high" : "") ); DECLARE_EVENT_CLASS(spi_message, TP_PROTO(struct spi_message *msg), TP_ARGS(msg), TP_STRUCT__entry( __field( int, bus_num ) __field( int, chip_select ) __field( struct spi_message *, msg ) ), TP_fast_assign( __entry->bus_num = msg->spi->controller->bus_num; __entry->chip_select = spi_get_chipselect(msg->spi, 0); __entry->msg = msg; ), TP_printk("spi%d.%d %p", (int)__entry->bus_num, (int)__entry->chip_select, (struct spi_message *)__entry->msg) ); DEFINE_EVENT(spi_message, spi_message_submit, TP_PROTO(struct spi_message *msg), TP_ARGS(msg) ); DEFINE_EVENT(spi_message, spi_message_start, TP_PROTO(struct spi_message *msg), TP_ARGS(msg) ); TRACE_EVENT(spi_message_done, TP_PROTO(struct spi_message *msg), TP_ARGS(msg), TP_STRUCT__entry( __field( int, bus_num ) __field( int, chip_select ) __field( struct spi_message *, msg ) __field( unsigned, frame ) __field( unsigned, actual ) ), TP_fast_assign( __entry->bus_num = msg->spi->controller->bus_num; __entry->chip_select = spi_get_chipselect(msg->spi, 0); __entry->msg = msg; __entry->frame = msg->frame_length; __entry->actual = msg->actual_length; ), TP_printk("spi%d.%d %p len=%u/%u", (int)__entry->bus_num, (int)__entry->chip_select, (struct spi_message *)__entry->msg, (unsigned)__entry->actual, (unsigned)__entry->frame) ); /* * Consider a buffer valid if non-NULL and if it doesn't match the dummy buffer * that only exist to work with controllers that have SPI_CONTROLLER_MUST_TX or * SPI_CONTROLLER_MUST_RX. */ #define spi_valid_txbuf(msg, xfer) \ (xfer->tx_buf && xfer->tx_buf != msg->spi->controller->dummy_tx) #define spi_valid_rxbuf(msg, xfer) \ (xfer->rx_buf && xfer->rx_buf != msg->spi->controller->dummy_rx) DECLARE_EVENT_CLASS(spi_transfer, TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer), TP_ARGS(msg, xfer), TP_STRUCT__entry( __field( int, bus_num ) __field( int, chip_select ) __field( struct spi_transfer *, xfer ) __field( int, len ) __dynamic_array(u8, rx_buf, spi_valid_rxbuf(msg, xfer) ? (xfer->len < 64 ? xfer->len : 64) : 0) __dynamic_array(u8, tx_buf, spi_valid_txbuf(msg, xfer) ? (xfer->len < 64 ? xfer->len : 64) : 0) ), TP_fast_assign( __entry->bus_num = msg->spi->controller->bus_num; __entry->chip_select = spi_get_chipselect(msg->spi, 0); __entry->xfer = xfer; __entry->len = xfer->len; if (spi_valid_txbuf(msg, xfer)) memcpy(__get_dynamic_array(tx_buf), xfer->tx_buf, __get_dynamic_array_len(tx_buf)); if (spi_valid_rxbuf(msg, xfer)) memcpy(__get_dynamic_array(rx_buf), xfer->rx_buf, __get_dynamic_array_len(rx_buf)); ), TP_printk("spi%d.%d %p len=%d tx=[%*phD] rx=[%*phD]", __entry->bus_num, __entry->chip_select, __entry->xfer, __entry->len, __get_dynamic_array_len(tx_buf), __get_dynamic_array(tx_buf), __get_dynamic_array_len(rx_buf), __get_dynamic_array(rx_buf)) ); DEFINE_EVENT(spi_transfer, spi_transfer_start, TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer), TP_ARGS(msg, xfer) ); DEFINE_EVENT(spi_transfer, spi_transfer_stop, TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer), TP_ARGS(msg, xfer) ); #endif /* _TRACE_POWER_H */ /* This part must be outside protection */ #include <trace/define_trace.h> |
| 25 26 26 26 25 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 | // SPDX-License-Identifier: GPL-2.0-only /* * LED support for the input layer * * Copyright 2010-2015 Samuel Thibault <samuel.thibault@ens-lyon.org> */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/init.h> #include <linux/leds.h> #include <linux/input.h> #if IS_ENABLED(CONFIG_VT) #define VT_TRIGGER(_name) .trigger = _name #else #define VT_TRIGGER(_name) .trigger = NULL #endif #if IS_ENABLED(CONFIG_SND_CTL_LED) #define AUDIO_TRIGGER(_name) .trigger = _name #else #define AUDIO_TRIGGER(_name) .trigger = NULL #endif static const struct { const char *name; const char *trigger; } input_led_info[LED_CNT] = { [LED_NUML] = { "numlock", VT_TRIGGER("kbd-numlock") }, [LED_CAPSL] = { "capslock", VT_TRIGGER("kbd-capslock") }, [LED_SCROLLL] = { "scrolllock", VT_TRIGGER("kbd-scrolllock") }, [LED_COMPOSE] = { "compose" }, [LED_KANA] = { "kana", VT_TRIGGER("kbd-kanalock") }, [LED_SLEEP] = { "sleep" } , [LED_SUSPEND] = { "suspend" }, [LED_MUTE] = { "mute", AUDIO_TRIGGER("audio-mute") }, [LED_MISC] = { "misc" }, [LED_MAIL] = { "mail" }, [LED_CHARGING] = { "charging" }, }; struct input_led { struct led_classdev cdev; struct input_handle *handle; unsigned int code; /* One of LED_* constants */ }; struct input_leds { struct input_handle handle; unsigned int num_leds; struct input_led leds[] __counted_by(num_leds); }; static enum led_brightness input_leds_brightness_get(struct led_classdev *cdev) { struct input_led *led = container_of(cdev, struct input_led, cdev); struct input_dev *input = led->handle->dev; return test_bit(led->code, input->led) ? cdev->max_brightness : 0; } static void input_leds_brightness_set(struct led_classdev *cdev, enum led_brightness brightness) { struct input_led *led = container_of(cdev, struct input_led, cdev); input_inject_event(led->handle, EV_LED, led->code, !!brightness); } static void input_leds_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) { } static int input_leds_get_count(struct input_dev *dev) { unsigned int led_code; int count = 0; for_each_set_bit(led_code, dev->ledbit, LED_CNT) if (input_led_info[led_code].name) count++; return count; } static int input_leds_connect(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id) { struct input_leds *leds; struct input_led *led; unsigned int num_leds; unsigned int led_code; int led_no; int error; num_leds = input_leds_get_count(dev); if (!num_leds) return -ENXIO; leds = kzalloc(struct_size(leds, leds, num_leds), GFP_KERNEL); if (!leds) return -ENOMEM; leds->num_leds = num_leds; leds->handle.dev = dev; leds->handle.handler = handler; leds->handle.name = "leds"; leds->handle.private = leds; error = input_register_handle(&leds->handle); if (error) goto err_free_mem; error = input_open_device(&leds->handle); if (error) goto err_unregister_handle; led_no = 0; for_each_set_bit(led_code, dev->ledbit, LED_CNT) { if (!input_led_info[led_code].name) continue; led = &leds->leds[led_no]; led->handle = &leds->handle; led->code = led_code; led->cdev.name = kasprintf(GFP_KERNEL, "%s::%s", dev_name(&dev->dev), input_led_info[led_code].name); if (!led->cdev.name) { error = -ENOMEM; goto err_unregister_leds; } led->cdev.max_brightness = 1; led->cdev.brightness_get = input_leds_brightness_get; led->cdev.brightness_set = input_leds_brightness_set; led->cdev.default_trigger = input_led_info[led_code].trigger; error = led_classdev_register(&dev->dev, &led->cdev); if (error) { dev_err(&dev->dev, "failed to register LED %s: %d\n", led->cdev.name, error); kfree(led->cdev.name); goto err_unregister_leds; } led_no++; } return 0; err_unregister_leds: while (--led_no >= 0) { struct input_led *led = &leds->leds[led_no]; led_classdev_unregister(&led->cdev); kfree(led->cdev.name); } input_close_device(&leds->handle); err_unregister_handle: input_unregister_handle(&leds->handle); err_free_mem: kfree(leds); return error; } static void input_leds_disconnect(struct input_handle *handle) { struct input_leds *leds = handle->private; int i; for (i = 0; i < leds->num_leds; i++) { struct input_led *led = &leds->leds[i]; led_classdev_unregister(&led->cdev); kfree(led->cdev.name); } input_close_device(handle); input_unregister_handle(handle); kfree(leds); } static const struct input_device_id input_leds_ids[] = { { .flags = INPUT_DEVICE_ID_MATCH_EVBIT, .evbit = { BIT_MASK(EV_LED) }, }, { }, }; MODULE_DEVICE_TABLE(input, input_leds_ids); static struct input_handler input_leds_handler = { .event = input_leds_event, .connect = input_leds_connect, .disconnect = input_leds_disconnect, .name = "leds", .id_table = input_leds_ids, }; static int __init input_leds_init(void) { return input_register_handler(&input_leds_handler); } module_init(input_leds_init); static void __exit input_leds_exit(void) { input_unregister_handler(&input_leds_handler); } module_exit(input_leds_exit); MODULE_AUTHOR("Samuel Thibault <samuel.thibault@ens-lyon.org>"); MODULE_AUTHOR("Dmitry Torokhov <dmitry.torokhov@gmail.com>"); MODULE_DESCRIPTION("Input -> LEDs Bridge"); MODULE_LICENSE("GPL v2"); |
| 2 3 2 1 1 3 2 3 3 1 1 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | // SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for Holtek gaming mice * Copyright (c) 2013 Christian Ohm * Heavily inspired by various other HID drivers that adjust the report * descriptor. */ /* */ #include <linux/hid.h> #include <linux/module.h> #include <linux/usb.h> #include "hid-ids.h" /* * The report descriptor of some Holtek based gaming mice specifies an * excessively large number of consumer usages (2^15), which is more than * HID_MAX_USAGES. This prevents proper parsing of the report descriptor. * * This driver fixes the report descriptor for: * - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000 * - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200 * and Zalman ZM-GM1 * - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse * - USB ID 04d9:a072, sold as LEETGION Hellion Gaming Mouse * - USB ID 04d9:a0c2, sold as ETEKCITY Scroll T-140 Gaming Mouse */ static const __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { /* Change usage maximum and logical maximum from 0x7fff to * 0x2fff, so they don't exceed HID_MAX_USAGES */ switch (hdev->product) { case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067: case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072: case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2: if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f && rdesc[120] == 0xff && rdesc[121] == 0x7f) { hid_info(hdev, "Fixing up report descriptor\n"); rdesc[116] = rdesc[121] = 0x2f; } break; case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A: case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070: case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081: if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f && rdesc[111] == 0xff && rdesc[112] == 0x7f) { hid_info(hdev, "Fixing up report descriptor\n"); rdesc[107] = rdesc[112] = 0x2f; } break; } } return rdesc; } static int holtek_mouse_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; if (!hid_is_usb(hdev)) return -EINVAL; ret = hid_parse(hdev); if (ret) { hid_err(hdev, "hid parse failed: %d\n", ret); return ret; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); if (ret) { hid_err(hdev, "hw start failed: %d\n", ret); return ret; } return 0; } static const struct hid_device_id holtek_mouse_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) }, { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) }, { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) }, { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) }, { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) }, { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) }, { } }; MODULE_DEVICE_TABLE(hid, holtek_mouse_devices); static struct hid_driver holtek_mouse_driver = { .name = "holtek_mouse", .id_table = holtek_mouse_devices, .report_fixup = holtek_mouse_report_fixup, .probe = holtek_mouse_probe, }; module_hid_driver(holtek_mouse_driver); MODULE_DESCRIPTION("HID driver for Holtek gaming mice"); MODULE_LICENSE("GPL"); |
| 39 39 39 38 39 39 39 39 40 27 26 36 33 36 35 36 36 36 34 36 34 32 27 33 36 30 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 | // SPDX-License-Identifier: GPL-2.0-only /* Copyright (C) 2005 Marc Kleine-Budde, Pengutronix * Copyright (C) 2006 Andrey Volkov, Varma Electronics * Copyright (C) 2008-2009 Wolfgang Grandegger <wg@grandegger.com> */ #include <linux/can.h> #include <linux/can/can-ml.h> #include <linux/can/dev.h> #include <linux/can/skb.h> #include <linux/gpio/consumer.h> #include <linux/if_arp.h> #include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/of.h> #include <linux/slab.h> #include <linux/workqueue.h> static void can_update_state_error_stats(struct net_device *dev, enum can_state new_state) { struct can_priv *priv = netdev_priv(dev); if (new_state <= priv->state) return; switch (new_state) { case CAN_STATE_ERROR_WARNING: priv->can_stats.error_warning++; break; case CAN_STATE_ERROR_PASSIVE: priv->can_stats.error_passive++; break; case CAN_STATE_BUS_OFF: priv->can_stats.bus_off++; break; default: break; } } static int can_tx_state_to_frame(struct net_device *dev, enum can_state state) { switch (state) { case CAN_STATE_ERROR_ACTIVE: return CAN_ERR_CRTL_ACTIVE; case CAN_STATE_ERROR_WARNING: return CAN_ERR_CRTL_TX_WARNING; case CAN_STATE_ERROR_PASSIVE: return CAN_ERR_CRTL_TX_PASSIVE; default: return 0; } } static int can_rx_state_to_frame(struct net_device *dev, enum can_state state) { switch (state) { case CAN_STATE_ERROR_ACTIVE: return CAN_ERR_CRTL_ACTIVE; case CAN_STATE_ERROR_WARNING: return CAN_ERR_CRTL_RX_WARNING; case CAN_STATE_ERROR_PASSIVE: return CAN_ERR_CRTL_RX_PASSIVE; default: return 0; } } const char *can_get_state_str(const enum can_state state) { switch (state) { case CAN_STATE_ERROR_ACTIVE: return "Error Active"; case CAN_STATE_ERROR_WARNING: return "Error Warning"; case CAN_STATE_ERROR_PASSIVE: return "Error Passive"; case CAN_STATE_BUS_OFF: return "Bus Off"; case CAN_STATE_STOPPED: return "Stopped"; case CAN_STATE_SLEEPING: return "Sleeping"; default: return "<unknown>"; } } EXPORT_SYMBOL_GPL(can_get_state_str); const char *can_get_ctrlmode_str(u32 ctrlmode) { switch (ctrlmode & ~(ctrlmode - 1)) { case 0: return "none"; case CAN_CTRLMODE_LOOPBACK: return "loopback"; case CAN_CTRLMODE_LISTENONLY: return "listen-only"; case CAN_CTRLMODE_3_SAMPLES: return "triple-sampling"; case CAN_CTRLMODE_ONE_SHOT: return "one-shot"; case CAN_CTRLMODE_BERR_REPORTING: return "berr-reporting"; case CAN_CTRLMODE_FD: return "fd"; case CAN_CTRLMODE_PRESUME_ACK: return "presume-ack"; case CAN_CTRLMODE_FD_NON_ISO: return "fd-non-iso"; case CAN_CTRLMODE_CC_LEN8_DLC: return "cc-len8-dlc"; case CAN_CTRLMODE_TDC_AUTO: return "fd-tdc-auto"; case CAN_CTRLMODE_TDC_MANUAL: return "fd-tdc-manual"; default: return "<unknown>"; } } EXPORT_SYMBOL_GPL(can_get_ctrlmode_str); static enum can_state can_state_err_to_state(u16 err) { if (err < CAN_ERROR_WARNING_THRESHOLD) return CAN_STATE_ERROR_ACTIVE; if (err < CAN_ERROR_PASSIVE_THRESHOLD) return CAN_STATE_ERROR_WARNING; if (err < CAN_BUS_OFF_THRESHOLD) return CAN_STATE_ERROR_PASSIVE; return CAN_STATE_BUS_OFF; } void can_state_get_by_berr_counter(const struct net_device *dev, const struct can_berr_counter *bec, enum can_state *tx_state, enum can_state *rx_state) { *tx_state = can_state_err_to_state(bec->txerr); *rx_state = can_state_err_to_state(bec->rxerr); } EXPORT_SYMBOL_GPL(can_state_get_by_berr_counter); void can_change_state(struct net_device *dev, struct can_frame *cf, enum can_state tx_state, enum can_state rx_state) { struct can_priv *priv = netdev_priv(dev); enum can_state new_state = max(tx_state, rx_state); if (unlikely(new_state == priv->state)) { netdev_warn(dev, "%s: oops, state did not change", __func__); return; } netdev_dbg(dev, "Controller changed from %s State (%d) into %s State (%d).\n", can_get_state_str(priv->state), priv->state, can_get_state_str(new_state), new_state); can_update_state_error_stats(dev, new_state); priv->state = new_state; if (!cf) return; if (unlikely(new_state == CAN_STATE_BUS_OFF)) { cf->can_id |= CAN_ERR_BUSOFF; return; } cf->can_id |= CAN_ERR_CRTL; cf->data[1] |= tx_state >= rx_state ? can_tx_state_to_frame(dev, tx_state) : 0; cf->data[1] |= tx_state <= rx_state ? can_rx_state_to_frame(dev, rx_state) : 0; } EXPORT_SYMBOL_GPL(can_change_state); /* CAN device restart for bus-off recovery */ static int can_restart(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); struct sk_buff *skb; struct can_frame *cf; int err; if (!priv->do_set_mode) return -EOPNOTSUPP; if (netif_carrier_ok(dev)) netdev_err(dev, "Attempt to restart for bus-off recovery, but carrier is OK?\n"); /* No synchronization needed because the device is bus-off and * no messages can come in or go out. */ can_flush_echo_skb(dev); /* send restart message upstream */ skb = alloc_can_err_skb(dev, &cf); if (skb) { cf->can_id |= CAN_ERR_RESTARTED; netif_rx(skb); } /* Now restart the device */ netif_carrier_on(dev); err = priv->do_set_mode(dev, CAN_MODE_START); if (err) { netdev_err(dev, "Restart failed, error %pe\n", ERR_PTR(err)); netif_carrier_off(dev); return err; } else { netdev_dbg(dev, "Restarted\n"); priv->can_stats.restarts++; } return 0; } static void can_restart_work(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct can_priv *priv = container_of(dwork, struct can_priv, restart_work); can_restart(priv->dev); } int can_restart_now(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); /* A manual restart is only permitted if automatic restart is * disabled and the device is in the bus-off state */ if (priv->restart_ms) return -EINVAL; if (priv->state != CAN_STATE_BUS_OFF) return -EBUSY; cancel_delayed_work_sync(&priv->restart_work); return can_restart(dev); } /* CAN bus-off * * This functions should be called when the device goes bus-off to * tell the netif layer that no more packets can be sent or received. * If enabled, a timer is started to trigger bus-off recovery. */ void can_bus_off(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); if (priv->restart_ms) netdev_info(dev, "bus-off, scheduling restart in %d ms\n", priv->restart_ms); else netdev_info(dev, "bus-off\n"); netif_carrier_off(dev); if (priv->restart_ms) schedule_delayed_work(&priv->restart_work, msecs_to_jiffies(priv->restart_ms)); } EXPORT_SYMBOL_GPL(can_bus_off); void can_setup(struct net_device *dev) { dev->type = ARPHRD_CAN; dev->mtu = CAN_MTU; dev->min_mtu = CAN_MTU; dev->max_mtu = CAN_MTU; dev->hard_header_len = 0; dev->addr_len = 0; dev->tx_queue_len = 10; /* New-style flags. */ dev->flags = IFF_NOARP; dev->features = NETIF_F_HW_CSUM; } /* Allocate and setup space for the CAN network device */ struct net_device *alloc_candev_mqs(int sizeof_priv, unsigned int echo_skb_max, unsigned int txqs, unsigned int rxqs) { struct can_ml_priv *can_ml; struct net_device *dev; struct can_priv *priv; int size; /* We put the driver's priv, the CAN mid layer priv and the * echo skb into the netdevice's priv. The memory layout for * the netdev_priv is like this: * * +-------------------------+ * | driver's priv | * +-------------------------+ * | struct can_ml_priv | * +-------------------------+ * | array of struct sk_buff | * +-------------------------+ */ size = ALIGN(sizeof_priv, NETDEV_ALIGN) + sizeof(struct can_ml_priv); if (echo_skb_max) size = ALIGN(size, sizeof(struct sk_buff *)) + echo_skb_max * sizeof(struct sk_buff *); dev = alloc_netdev_mqs(size, "can%d", NET_NAME_UNKNOWN, can_setup, txqs, rxqs); if (!dev) return NULL; priv = netdev_priv(dev); priv->dev = dev; can_ml = (void *)priv + ALIGN(sizeof_priv, NETDEV_ALIGN); can_set_ml_priv(dev, can_ml); if (echo_skb_max) { priv->echo_skb_max = echo_skb_max; priv->echo_skb = (void *)priv + (size - echo_skb_max * sizeof(struct sk_buff *)); } priv->state = CAN_STATE_STOPPED; INIT_DELAYED_WORK(&priv->restart_work, can_restart_work); return dev; } EXPORT_SYMBOL_GPL(alloc_candev_mqs); /* Free space of the CAN network device */ void free_candev(struct net_device *dev) { free_netdev(dev); } EXPORT_SYMBOL_GPL(free_candev); void can_set_default_mtu(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); if (priv->ctrlmode & CAN_CTRLMODE_FD) { dev->mtu = CANFD_MTU; dev->min_mtu = CANFD_MTU; dev->max_mtu = CANFD_MTU; } else { dev->mtu = CAN_MTU; dev->min_mtu = CAN_MTU; dev->max_mtu = CAN_MTU; } } /* changing MTU and control mode for CAN/CANFD devices */ int can_change_mtu(struct net_device *dev, int new_mtu) { struct can_priv *priv = netdev_priv(dev); u32 ctrlmode_static = can_get_static_ctrlmode(priv); /* Do not allow changing the MTU while running */ if (dev->flags & IFF_UP) return -EBUSY; /* allow change of MTU according to the CANFD ability of the device */ switch (new_mtu) { case CAN_MTU: /* 'CANFD-only' controllers can not switch to CAN_MTU */ if (ctrlmode_static & CAN_CTRLMODE_FD) return -EINVAL; priv->ctrlmode &= ~CAN_CTRLMODE_FD; break; case CANFD_MTU: /* check for potential CANFD ability */ if (!(priv->ctrlmode_supported & CAN_CTRLMODE_FD) && !(ctrlmode_static & CAN_CTRLMODE_FD)) return -EINVAL; priv->ctrlmode |= CAN_CTRLMODE_FD; break; default: return -EINVAL; } WRITE_ONCE(dev->mtu, new_mtu); return 0; } EXPORT_SYMBOL_GPL(can_change_mtu); /* helper to define static CAN controller features at device creation time */ int can_set_static_ctrlmode(struct net_device *dev, u32 static_mode) { struct can_priv *priv = netdev_priv(dev); /* alloc_candev() succeeded => netdev_priv() is valid at this point */ if (priv->ctrlmode_supported & static_mode) { netdev_warn(dev, "Controller features can not be supported and static at the same time\n"); return -EINVAL; } priv->ctrlmode = static_mode; /* override MTU which was set by default in can_setup()? */ can_set_default_mtu(dev); return 0; } EXPORT_SYMBOL_GPL(can_set_static_ctrlmode); /* generic implementation of netdev_ops::ndo_eth_ioctl for CAN devices * supporting hardware timestamps */ int can_eth_ioctl_hwts(struct net_device *netdev, struct ifreq *ifr, int cmd) { struct hwtstamp_config hwts_cfg = { 0 }; switch (cmd) { case SIOCSHWTSTAMP: /* set */ if (copy_from_user(&hwts_cfg, ifr->ifr_data, sizeof(hwts_cfg))) return -EFAULT; if (hwts_cfg.tx_type == HWTSTAMP_TX_ON && hwts_cfg.rx_filter == HWTSTAMP_FILTER_ALL) return 0; return -ERANGE; case SIOCGHWTSTAMP: /* get */ hwts_cfg.tx_type = HWTSTAMP_TX_ON; hwts_cfg.rx_filter = HWTSTAMP_FILTER_ALL; if (copy_to_user(ifr->ifr_data, &hwts_cfg, sizeof(hwts_cfg))) return -EFAULT; return 0; default: return -EOPNOTSUPP; } } EXPORT_SYMBOL(can_eth_ioctl_hwts); /* generic implementation of ethtool_ops::get_ts_info for CAN devices * supporting hardware timestamps */ int can_ethtool_op_get_ts_info_hwts(struct net_device *dev, struct kernel_ethtool_ts_info *info) { info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | SOF_TIMESTAMPING_TX_HARDWARE | SOF_TIMESTAMPING_RX_HARDWARE | SOF_TIMESTAMPING_RAW_HARDWARE; info->tx_types = BIT(HWTSTAMP_TX_ON); info->rx_filters = BIT(HWTSTAMP_FILTER_ALL); return 0; } EXPORT_SYMBOL(can_ethtool_op_get_ts_info_hwts); /* Common open function when the device gets opened. * * This function should be called in the open function of the device * driver. */ int open_candev(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); if (!priv->bittiming.bitrate) { netdev_err(dev, "bit-timing not yet defined\n"); return -EINVAL; } /* For CAN FD the data bitrate has to be >= the arbitration bitrate */ if ((priv->ctrlmode & CAN_CTRLMODE_FD) && (!priv->fd.data_bittiming.bitrate || priv->fd.data_bittiming.bitrate < priv->bittiming.bitrate)) { netdev_err(dev, "incorrect/missing data bit-timing\n"); return -EINVAL; } /* Switch carrier on if device was stopped while in bus-off state */ if (!netif_carrier_ok(dev)) netif_carrier_on(dev); return 0; } EXPORT_SYMBOL_GPL(open_candev); #ifdef CONFIG_OF /* Common function that can be used to understand the limitation of * a transceiver when it provides no means to determine these limitations * at runtime. */ void of_can_transceiver(struct net_device *dev) { struct device_node *dn; struct can_priv *priv = netdev_priv(dev); struct device_node *np = dev->dev.parent->of_node; int ret; dn = of_get_child_by_name(np, "can-transceiver"); if (!dn) return; ret = of_property_read_u32(dn, "max-bitrate", &priv->bitrate_max); of_node_put(dn); if ((ret && ret != -EINVAL) || (!ret && !priv->bitrate_max)) netdev_warn(dev, "Invalid value for transceiver max bitrate. Ignoring bitrate limit.\n"); } EXPORT_SYMBOL_GPL(of_can_transceiver); #endif /* Common close function for cleanup before the device gets closed. * * This function should be called in the close function of the device * driver. */ void close_candev(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); cancel_delayed_work_sync(&priv->restart_work); can_flush_echo_skb(dev); } EXPORT_SYMBOL_GPL(close_candev); static int can_set_termination(struct net_device *ndev, u16 term) { struct can_priv *priv = netdev_priv(ndev); int set; if (term == priv->termination_gpio_ohms[CAN_TERMINATION_GPIO_ENABLED]) set = 1; else set = 0; gpiod_set_value_cansleep(priv->termination_gpio, set); return 0; } static int can_get_termination(struct net_device *ndev) { struct can_priv *priv = netdev_priv(ndev); struct device *dev = ndev->dev.parent; struct gpio_desc *gpio; u32 term; int ret; /* Disabling termination by default is the safe choice: Else if many * bus participants enable it, no communication is possible at all. */ gpio = devm_gpiod_get_optional(dev, "termination", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return dev_err_probe(dev, PTR_ERR(gpio), "Cannot get termination-gpios\n"); if (!gpio) return 0; ret = device_property_read_u32(dev, "termination-ohms", &term); if (ret) { netdev_err(ndev, "Cannot get termination-ohms: %pe\n", ERR_PTR(ret)); return ret; } if (term > U16_MAX) { netdev_err(ndev, "Invalid termination-ohms value (%u > %u)\n", term, U16_MAX); return -EINVAL; } priv->termination_const_cnt = ARRAY_SIZE(priv->termination_gpio_ohms); priv->termination_const = priv->termination_gpio_ohms; priv->termination_gpio = gpio; priv->termination_gpio_ohms[CAN_TERMINATION_GPIO_DISABLED] = CAN_TERMINATION_DISABLED; priv->termination_gpio_ohms[CAN_TERMINATION_GPIO_ENABLED] = term; priv->do_set_termination = can_set_termination; return 0; } static bool can_bittiming_const_valid(const struct can_bittiming_const *btc) { if (!btc) return true; if (!btc->sjw_max) return false; return true; } /* Register the CAN network device */ int register_candev(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); int err; /* Ensure termination_const, termination_const_cnt and * do_set_termination consistency. All must be either set or * unset. */ if ((!priv->termination_const != !priv->termination_const_cnt) || (!priv->termination_const != !priv->do_set_termination)) return -EINVAL; if (!priv->bitrate_const != !priv->bitrate_const_cnt) return -EINVAL; if (!priv->fd.data_bitrate_const != !priv->fd.data_bitrate_const_cnt) return -EINVAL; /* We only support either fixed bit rates or bit timing const. */ if ((priv->bitrate_const || priv->fd.data_bitrate_const) && (priv->bittiming_const || priv->fd.data_bittiming_const)) return -EINVAL; if (!can_bittiming_const_valid(priv->bittiming_const) || !can_bittiming_const_valid(priv->fd.data_bittiming_const)) return -EINVAL; if (!priv->termination_const) { err = can_get_termination(dev); if (err) return err; } dev->rtnl_link_ops = &can_link_ops; netif_carrier_off(dev); return register_netdev(dev); } EXPORT_SYMBOL_GPL(register_candev); /* Unregister the CAN network device */ void unregister_candev(struct net_device *dev) { unregister_netdev(dev); } EXPORT_SYMBOL_GPL(unregister_candev); /* Test if a network device is a candev based device * and return the can_priv* if so. */ struct can_priv *safe_candev_priv(struct net_device *dev) { if (dev->type != ARPHRD_CAN || dev->rtnl_link_ops != &can_link_ops) return NULL; return netdev_priv(dev); } EXPORT_SYMBOL_GPL(safe_candev_priv); static __init int can_dev_init(void) { int err; err = can_netlink_register(); if (!err) pr_info("CAN device driver interface\n"); return err; } module_init(can_dev_init); static __exit void can_dev_exit(void) { can_netlink_unregister(); } module_exit(can_dev_exit); MODULE_ALIAS_RTNL_LINK("can"); |
| 3 2 1 1 4 3 3 1 4 1 4 3 2 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | // SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for some cypress "special" devices * * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc * Copyright (c) 2006-2007 Jiri Kosina * Copyright (c) 2008 Jiri Slaby */ /* */ #include <linux/device.h> #include <linux/hid.h> #include <linux/input.h> #include <linux/module.h> #include "hid-ids.h" #define CP_RDESC_SWAPPED_MIN_MAX 0x01 #define CP_2WHEEL_MOUSE_HACK 0x02 #define CP_2WHEEL_MOUSE_HACK_ON 0x04 #define VA_INVAL_LOGICAL_BOUNDARY 0x08 /* * Some USB barcode readers from cypress have usage min and usage max in * the wrong order */ static __u8 *cp_rdesc_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { unsigned int i; if (*rsize < 4) return rdesc; for (i = 0; i < *rsize - 4; i++) if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) { rdesc[i] = 0x19; rdesc[i + 2] = 0x29; swap(rdesc[i + 3], rdesc[i + 1]); } return rdesc; } static __u8 *va_logical_boundary_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { /* * Varmilo VA104M (with VID Cypress and device ID 07B1) incorrectly * reports Logical Minimum of its Consumer Control device as 572 * (0x02 0x3c). Fix this by setting its Logical Minimum to zero. */ if (*rsize == 25 && rdesc[0] == 0x05 && rdesc[1] == 0x0c && rdesc[2] == 0x09 && rdesc[3] == 0x01 && rdesc[6] == 0x19 && rdesc[7] == 0x00 && rdesc[11] == 0x16 && rdesc[12] == 0x3c && rdesc[13] == 0x02) { hid_info(hdev, "fixing up varmilo VA104M consumer control report descriptor\n"); rdesc[12] = 0x00; rdesc[13] = 0x00; } return rdesc; } static const __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); if (quirks & CP_RDESC_SWAPPED_MIN_MAX) rdesc = cp_rdesc_fixup(hdev, rdesc, rsize); if (quirks & VA_INVAL_LOGICAL_BOUNDARY) rdesc = va_logical_boundary_fixup(hdev, rdesc, rsize); return rdesc; } static int cp_input_mapped(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); if (!(quirks & CP_2WHEEL_MOUSE_HACK)) return 0; if (usage->type == EV_REL && usage->code == REL_WHEEL) set_bit(REL_HWHEEL, *bit); if (usage->hid == 0x00090005) return -1; return 0; } static int cp_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || !usage->type || !(quirks & CP_2WHEEL_MOUSE_HACK)) return 0; if (usage->hid == 0x00090005) { if (value) quirks |= CP_2WHEEL_MOUSE_HACK_ON; else quirks &= ~CP_2WHEEL_MOUSE_HACK_ON; hid_set_drvdata(hdev, (void *)quirks); return 1; } if (usage->code == REL_WHEEL && (quirks & CP_2WHEEL_MOUSE_HACK_ON)) { struct input_dev *input = field->hidinput->input; input_event(input, usage->type, REL_HWHEEL, value); return 1; } return 0; } static int cp_probe(struct hid_device *hdev, const struct hid_device_id *id) { unsigned long quirks = id->driver_data; int ret; hid_set_drvdata(hdev, (void *)quirks); ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); goto err_free; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); if (ret) { hid_err(hdev, "hw start failed\n"); goto err_free; } return 0; err_free: return ret; } static const struct hid_device_id cp_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1), .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2), .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3), .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4), .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE), .driver_data = CP_2WHEEL_MOUSE_HACK }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_VARMILO_VA104M_07B1), .driver_data = VA_INVAL_LOGICAL_BOUNDARY }, { } }; MODULE_DEVICE_TABLE(hid, cp_devices); static struct hid_driver cp_driver = { .name = "cypress", .id_table = cp_devices, .report_fixup = cp_report_fixup, .input_mapped = cp_input_mapped, .event = cp_event, .probe = cp_probe, }; module_hid_driver(cp_driver); MODULE_DESCRIPTION("HID driver for some cypress \"special\" devices"); MODULE_LICENSE("GPL"); |
| 14 12 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | /* SPDX-License-Identifier: GPL-2.0 */ #undef TRACE_SYSTEM #define TRACE_SYSTEM signal #if !defined(_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_SIGNAL_H #include <linux/signal.h> #include <linux/sched.h> #include <linux/tracepoint.h> #define TP_STORE_SIGINFO(__entry, info) \ do { \ if (info == SEND_SIG_NOINFO) { \ __entry->errno = 0; \ __entry->code = SI_USER; \ } else if (info == SEND_SIG_PRIV) { \ __entry->errno = 0; \ __entry->code = SI_KERNEL; \ } else { \ __entry->errno = info->si_errno; \ __entry->code = info->si_code; \ } \ } while (0) #ifndef TRACE_HEADER_MULTI_READ enum { TRACE_SIGNAL_DELIVERED, TRACE_SIGNAL_IGNORED, TRACE_SIGNAL_ALREADY_PENDING, TRACE_SIGNAL_OVERFLOW_FAIL, TRACE_SIGNAL_LOSE_INFO, }; #endif /** * signal_generate - called when a signal is generated * @sig: signal number * @info: pointer to struct siginfo * @task: pointer to struct task_struct * @group: shared or private * @result: TRACE_SIGNAL_* * * Current process sends a 'sig' signal to 'task' process with * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV, * 'info' is not a pointer and you can't access its field. Instead, * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV * means that si_code is SI_KERNEL. */ TRACE_EVENT(signal_generate, TP_PROTO(int sig, struct kernel_siginfo *info, struct task_struct *task, int group, int result), TP_ARGS(sig, info, task, group, result), TP_STRUCT__entry( __field( int, sig ) __field( int, errno ) __field( int, code ) __array( char, comm, TASK_COMM_LEN ) __field( pid_t, pid ) __field( int, group ) __field( int, result ) ), TP_fast_assign( __entry->sig = sig; TP_STORE_SIGINFO(__entry, info); memcpy(__entry->comm, task->comm, TASK_COMM_LEN); __entry->pid = task->pid; __entry->group = group; __entry->result = result; ), TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d grp=%d res=%d", __entry->sig, __entry->errno, __entry->code, __entry->comm, __entry->pid, __entry->group, __entry->result) ); /** * signal_deliver - called when a signal is delivered * @sig: signal number * @info: pointer to struct siginfo * @ka: pointer to struct k_sigaction * * A 'sig' signal is delivered to current process with 'info' siginfo, * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or * SIG_DFL. * Note that some signals reported by signal_generate tracepoint can be * lost, ignored or modified (by debugger) before hitting this tracepoint. * This means, this can show which signals are actually delivered, but * matching generated signals and delivered signals may not be correct. */ TRACE_EVENT(signal_deliver, TP_PROTO(int sig, struct kernel_siginfo *info, struct k_sigaction *ka), TP_ARGS(sig, info, ka), TP_STRUCT__entry( __field( int, sig ) __field( int, errno ) __field( int, code ) __field( unsigned long, sa_handler ) __field( unsigned long, sa_flags ) ), TP_fast_assign( __entry->sig = sig; TP_STORE_SIGINFO(__entry, info); __entry->sa_handler = (unsigned long)ka->sa.sa_handler; __entry->sa_flags = ka->sa.sa_flags; ), TP_printk("sig=%d errno=%d code=%d sa_handler=%lx sa_flags=%lx", __entry->sig, __entry->errno, __entry->code, __entry->sa_handler, __entry->sa_flags) ); #endif /* _TRACE_SIGNAL_H */ /* This part must be outside protection */ #include <trace/define_trace.h> |
| 13 13 13 2 2 2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 1 11 10 1 11 3 11 11 8 8 8 2 2 11 13 13 13 13 11 10 8 7 5 14 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland * Copyright (c) 2002, 2003 Tuukka Toivonen * Copyright (c) 2008 Erik Andrén * * P/N 861037: Sensor HDCS1000 ASIC STV0600 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam * P/N 861075-0040: Sensor HDCS1000 ASIC * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/input.h> #include "stv06xx_sensor.h" MODULE_AUTHOR("Erik Andrén"); MODULE_DESCRIPTION("STV06XX USB Camera Driver"); MODULE_LICENSE("GPL"); static bool dump_bridge; static bool dump_sensor; int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data) { int err; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; struct usb_device *udev = sd->gspca_dev.dev; __u8 *buf = sd->gspca_dev.usb_buf; u8 len = (i2c_data > 0xff) ? 2 : 1; buf[0] = i2c_data & 0xff; buf[1] = (i2c_data >> 8) & 0xff; err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, address, 0, buf, len, STV06XX_URB_MSG_TIMEOUT); gspca_dbg(gspca_dev, D_CONF, "Written 0x%x to address 0x%x, status: %d\n", i2c_data, address, err); return (err < 0) ? err : 0; } int stv06xx_read_bridge(struct sd *sd, u16 address, u8 *i2c_data) { int err; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; struct usb_device *udev = sd->gspca_dev.dev; __u8 *buf = sd->gspca_dev.usb_buf; err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x04, 0xc0, address, 0, buf, 1, STV06XX_URB_MSG_TIMEOUT); *i2c_data = buf[0]; gspca_dbg(gspca_dev, D_CONF, "Reading 0x%x from address 0x%x, status %d\n", *i2c_data, address, err); return (err < 0) ? err : 0; } /* Wraps the normal write sensor bytes / words functions for writing a single value */ int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value) { if (sd->sensor->i2c_len == 2) { u16 data[2] = { address, value }; return stv06xx_write_sensor_words(sd, data, 1); } else { u8 data[2] = { address, value }; return stv06xx_write_sensor_bytes(sd, data, 1); } } static int stv06xx_write_sensor_finish(struct sd *sd) { int err = 0; if (sd->bridge == BRIDGE_STV610) { struct usb_device *udev = sd->gspca_dev.dev; __u8 *buf = sd->gspca_dev.usb_buf; buf[0] = 0; err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, 0x1704, 0, buf, 1, STV06XX_URB_MSG_TIMEOUT); } return (err < 0) ? err : 0; } int stv06xx_write_sensor_bytes(struct sd *sd, const u8 *data, u8 len) { int err, i, j; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; struct usb_device *udev = sd->gspca_dev.dev; __u8 *buf = sd->gspca_dev.usb_buf; gspca_dbg(gspca_dev, D_CONF, "I2C: Command buffer contains %d entries\n", len); for (i = 0; i < len;) { /* Build the command buffer */ memset(buf, 0, I2C_BUFFER_LENGTH); for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) { buf[j] = data[2*i]; buf[0x10 + j] = data[2*i+1]; gspca_dbg(gspca_dev, D_CONF, "I2C: Writing 0x%02x to reg 0x%02x\n", data[2*i+1], data[2*i]); } buf[0x20] = sd->sensor->i2c_addr; buf[0x21] = j - 1; /* Number of commands to send - 1 */ buf[0x22] = I2C_WRITE_CMD; err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, 0x0400, 0, buf, I2C_BUFFER_LENGTH, STV06XX_URB_MSG_TIMEOUT); if (err < 0) return err; } return stv06xx_write_sensor_finish(sd); } int stv06xx_write_sensor_words(struct sd *sd, const u16 *data, u8 len) { int err, i, j; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; struct usb_device *udev = sd->gspca_dev.dev; __u8 *buf = sd->gspca_dev.usb_buf; gspca_dbg(gspca_dev, D_CONF, "I2C: Command buffer contains %d entries\n", len); for (i = 0; i < len;) { /* Build the command buffer */ memset(buf, 0, I2C_BUFFER_LENGTH); for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) { buf[j] = data[2*i]; buf[0x10 + j * 2] = data[2*i+1]; buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8; gspca_dbg(gspca_dev, D_CONF, "I2C: Writing 0x%04x to reg 0x%02x\n", data[2*i+1], data[2*i]); } buf[0x20] = sd->sensor->i2c_addr; buf[0x21] = j - 1; /* Number of commands to send - 1 */ buf[0x22] = I2C_WRITE_CMD; err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, 0x0400, 0, buf, I2C_BUFFER_LENGTH, STV06XX_URB_MSG_TIMEOUT); if (err < 0) return err; } return stv06xx_write_sensor_finish(sd); } int stv06xx_read_sensor(struct sd *sd, const u8 address, u16 *value) { int err; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; struct usb_device *udev = sd->gspca_dev.dev; __u8 *buf = sd->gspca_dev.usb_buf; err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush); if (err < 0) return err; /* Clear mem */ memset(buf, 0, I2C_BUFFER_LENGTH); buf[0] = address; buf[0x20] = sd->sensor->i2c_addr; buf[0x21] = 0; /* Read I2C register */ buf[0x22] = I2C_READ_CMD; err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH, STV06XX_URB_MSG_TIMEOUT); if (err < 0) { pr_err("I2C: Read error writing address: %d\n", err); return err; } err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len, STV06XX_URB_MSG_TIMEOUT); if (sd->sensor->i2c_len == 2) *value = buf[0] | (buf[1] << 8); else *value = buf[0]; gspca_dbg(gspca_dev, D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d\n", *value, address, err); return (err < 0) ? err : 0; } /* Dumps all bridge registers */ static void stv06xx_dump_bridge(struct sd *sd) { int i; u8 data, buf; pr_info("Dumping all stv06xx bridge registers\n"); for (i = 0x1400; i < 0x160f; i++) { stv06xx_read_bridge(sd, i, &data); pr_info("Read 0x%x from address 0x%x\n", data, i); } pr_info("Testing stv06xx bridge registers for writability\n"); for (i = 0x1400; i < 0x160f; i++) { stv06xx_read_bridge(sd, i, &data); buf = data; stv06xx_write_bridge(sd, i, 0xff); stv06xx_read_bridge(sd, i, &data); if (data == 0xff) pr_info("Register 0x%x is read/write\n", i); else if (data != buf) pr_info("Register 0x%x is read/write, but only partially\n", i); else pr_info("Register 0x%x is read-only\n", i); stv06xx_write_bridge(sd, i, buf); } } /* this function is called at probe and resume time */ static int stv06xx_init(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int err; gspca_dbg(gspca_dev, D_PROBE, "Initializing camera\n"); /* Let the usb init settle for a bit before performing the initialization */ msleep(250); err = sd->sensor->init(sd); if (dump_sensor && sd->sensor->dump) sd->sensor->dump(sd); return (err < 0) ? err : 0; } /* this function is called at probe time */ static int stv06xx_init_controls(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; gspca_dbg(gspca_dev, D_PROBE, "Initializing controls\n"); gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler; return sd->sensor->init_controls(sd); } /* Start the camera */ static int stv06xx_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; struct usb_host_interface *alt; struct usb_interface *intf; int err, packet_size; intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface); alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt); if (!alt) { gspca_err(gspca_dev, "Couldn't get altsetting\n"); return -EIO; } if (alt->desc.bNumEndpoints < 1) return -ENODEV; packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size); if (err < 0) return err; /* Prepare the sensor for start */ err = sd->sensor->start(sd); if (err < 0) goto out; /* Start isochronous streaming */ err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1); out: if (err < 0) gspca_dbg(gspca_dev, D_STREAM, "Starting stream failed\n"); else gspca_dbg(gspca_dev, D_STREAM, "Started streaming\n"); return (err < 0) ? err : 0; } static int stv06xx_isoc_init(struct gspca_dev *gspca_dev) { struct usb_interface_cache *intfc; struct usb_host_interface *alt; struct sd *sd = (struct sd *) gspca_dev; intfc = gspca_dev->dev->actconfig->intf_cache[0]; if (intfc->num_altsetting < 2) return -ENODEV; alt = &intfc->altsetting[1]; if (alt->desc.bNumEndpoints < 1) return -ENODEV; /* Start isoc bandwidth "negotiation" at max isoc bandwidth */ alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]); return 0; } static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev) { int ret, packet_size, min_packet_size; struct usb_host_interface *alt; struct sd *sd = (struct sd *) gspca_dev; /* * Existence of altsetting and endpoint was verified in * stv06xx_isoc_init() */ alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1]; packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode]; if (packet_size <= min_packet_size) return -EIO; packet_size -= 100; if (packet_size < min_packet_size) packet_size = min_packet_size; alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size); ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1); if (ret < 0) gspca_err(gspca_dev, "set alt 1 err %d\n", ret); return ret; } static void stv06xx_stopN(struct gspca_dev *gspca_dev) { int err; struct sd *sd = (struct sd *) gspca_dev; /* stop ISO-streaming */ err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0); if (err < 0) goto out; err = sd->sensor->stop(sd); out: if (err < 0) gspca_dbg(gspca_dev, D_STREAM, "Failed to stop stream\n"); else gspca_dbg(gspca_dev, D_STREAM, "Stopped streaming\n"); } /* * Analyse an USB packet of the data stream and store it appropriately. * Each packet contains an integral number of chunks. Each chunk has * 2-bytes identification, followed by 2-bytes that describe the chunk * length. Known/guessed chunk identifications are: * 8001/8005/C001/C005 - Begin new frame * 8002/8006/C002/C006 - End frame * 0200/4200 - Contains actual image data, bayer or compressed * 0005 - 11 bytes of unknown data * 0100 - 2 bytes of unknown data * The 0005 and 0100 chunks seem to appear only in compressed stream. */ static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; gspca_dbg(gspca_dev, D_PACK, "Packet of length %d arrived\n", len); /* A packet may contain several frames loop until the whole packet is reached */ while (len) { int id, chunk_len; if (len < 4) { gspca_dbg(gspca_dev, D_PACK, "Packet is smaller than 4 bytes\n"); return; } /* Capture the id */ id = (data[0] << 8) | data[1]; /* Capture the chunk length */ chunk_len = (data[2] << 8) | data[3]; gspca_dbg(gspca_dev, D_PACK, "Chunk id: %x, length: %d\n", id, chunk_len); data += 4; len -= 4; if (len < chunk_len) { gspca_err(gspca_dev, "URB packet length is smaller than the specified chunk length\n"); gspca_dev->last_packet_type = DISCARD_PACKET; return; } /* First byte seem to be 02=data 2nd byte is unknown??? */ if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200) goto frame_data; switch (id) { case 0x0200: case 0x4200: frame_data: gspca_dbg(gspca_dev, D_PACK, "Frame data packet detected\n"); if (sd->to_skip) { int skip = (sd->to_skip < chunk_len) ? sd->to_skip : chunk_len; data += skip; len -= skip; chunk_len -= skip; sd->to_skip -= skip; } gspca_frame_add(gspca_dev, INTER_PACKET, data, chunk_len); break; case 0x8001: case 0x8005: case 0xc001: case 0xc005: gspca_dbg(gspca_dev, D_PACK, "Starting new frame\n"); /* Create a new frame, chunk length should be zero */ gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0); if (sd->bridge == BRIDGE_ST6422) sd->to_skip = gspca_dev->pixfmt.width * 4; if (chunk_len) gspca_err(gspca_dev, "Chunk length is non-zero on a SOF\n"); break; case 0x8002: case 0x8006: case 0xc002: gspca_dbg(gspca_dev, D_PACK, "End of frame detected\n"); /* Complete the last frame (if any) */ gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); if (chunk_len) gspca_err(gspca_dev, "Chunk length is non-zero on a EOF\n"); break; case 0x0005: gspca_dbg(gspca_dev, D_PACK, "Chunk 0x005 detected\n"); /* Unknown chunk with 11 bytes of data, occurs just before end of each frame in compressed mode */ break; case 0x0100: gspca_dbg(gspca_dev, D_PACK, "Chunk 0x0100 detected\n"); /* Unknown chunk with 2 bytes of data, occurs 2-3 times per USB interrupt */ break; case 0x42ff: gspca_dbg(gspca_dev, D_PACK, "Chunk 0x42ff detected\n"); /* Special chunk seen sometimes on the ST6422 */ break; default: gspca_dbg(gspca_dev, D_PACK, "Unknown chunk 0x%04x detected\n", id); /* Unknown chunk */ } data += chunk_len; len -= chunk_len; } } #if IS_ENABLED(CONFIG_INPUT) static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* interrupt packet data */ int len) /* interrupt packet length */ { int ret = -EINVAL; if (len == 1 && (data[0] == 0x80 || data[0] == 0x10)) { input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1); input_sync(gspca_dev->input_dev); ret = 0; } if (len == 1 && (data[0] == 0x88 || data[0] == 0x11)) { input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); input_sync(gspca_dev->input_dev); ret = 0; } return ret; } #endif static int stv06xx_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id); static void stv06xx_probe_error(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *)gspca_dev; kfree(sd->sensor_priv); sd->sensor_priv = NULL; } /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = stv06xx_config, .init = stv06xx_init, .init_controls = stv06xx_init_controls, .probe_error = stv06xx_probe_error, .start = stv06xx_start, .stopN = stv06xx_stopN, .pkt_scan = stv06xx_pkt_scan, .isoc_init = stv06xx_isoc_init, .isoc_nego = stv06xx_isoc_nego, #if IS_ENABLED(CONFIG_INPUT) .int_pkt_scan = sd_int_pkt_scan, #endif }; /* This function is called at probe time */ static int stv06xx_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; gspca_dbg(gspca_dev, D_PROBE, "Configuring camera\n"); sd->bridge = id->driver_info; gspca_dev->sd_desc = &sd_desc; if (dump_bridge) stv06xx_dump_bridge(sd); sd->sensor = &stv06xx_sensor_st6422; if (!sd->sensor->probe(sd)) return 0; sd->sensor = &stv06xx_sensor_vv6410; if (!sd->sensor->probe(sd)) return 0; sd->sensor = &stv06xx_sensor_hdcs1x00; if (!sd->sensor->probe(sd)) return 0; sd->sensor = &stv06xx_sensor_hdcs1020; if (!sd->sensor->probe(sd)) return 0; sd->sensor = &stv06xx_sensor_pb0100; if (!sd->sensor->probe(sd)) return 0; sd->sensor = NULL; return -ENODEV; } /* -- module initialisation -- */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 }, /* QuickCam Express */ {USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 }, /* LEGO cam / QuickCam Web */ {USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 }, /* Dexxa WebCam USB */ {USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 }, /* QuickCam Messenger */ {USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 }, /* QuickCam Communicate */ {USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 }, /* QuickCam Messenger (new) */ {} }; MODULE_DEVICE_TABLE(usb, device_table); /* -- device connect -- */ static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id) { return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), THIS_MODULE); } static void sd_disconnect(struct usb_interface *intf) { struct gspca_dev *gspca_dev = usb_get_intfdata(intf); struct sd *sd = (struct sd *) gspca_dev; void *priv = sd->sensor_priv; gspca_dbg(gspca_dev, D_PROBE, "Disconnecting the stv06xx device\n"); sd->sensor = NULL; gspca_disconnect(intf); kfree(priv); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = device_table, .probe = sd_probe, .disconnect = sd_disconnect, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, .reset_resume = gspca_resume, #endif }; module_usb_driver(sd_driver); module_param(dump_bridge, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup"); module_param(dump_sensor, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup"); |
| 3131 3201 3201 3206 3195 3196 3126 3128 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | // SPDX-License-Identifier: GPL-2.0 /* * drivers/usb/core/endpoint.c * * (C) Copyright 2002,2004,2006 Greg Kroah-Hartman * (C) Copyright 2002,2004 IBM Corp. * (C) Copyright 2006 Novell Inc. * * Released under the GPLv2 only. * * Endpoint sysfs stuff */ #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/usb.h> #include "usb.h" struct ep_device { struct usb_endpoint_descriptor *desc; struct usb_device *udev; struct device dev; }; #define to_ep_device(_dev) \ container_of(_dev, struct ep_device, dev) struct ep_attribute { struct attribute attr; ssize_t (*show)(struct usb_device *, struct usb_endpoint_descriptor *, char *); }; #define to_ep_attribute(_attr) \ container_of(_attr, struct ep_attribute, attr) #define usb_ep_attr(field, format_string) \ static ssize_t field##_show(struct device *dev, \ struct device_attribute *attr, \ char *buf) \ { \ struct ep_device *ep = to_ep_device(dev); \ return sysfs_emit(buf, format_string, ep->desc->field); \ } \ static DEVICE_ATTR_RO(field) usb_ep_attr(bLength, "%02x\n"); usb_ep_attr(bEndpointAddress, "%02x\n"); usb_ep_attr(bmAttributes, "%02x\n"); usb_ep_attr(bInterval, "%02x\n"); static ssize_t wMaxPacketSize_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ep_device *ep = to_ep_device(dev); return sysfs_emit(buf, "%04x\n", usb_endpoint_maxp(ep->desc)); } static DEVICE_ATTR_RO(wMaxPacketSize); static ssize_t type_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ep_device *ep = to_ep_device(dev); char *type = "unknown"; switch (usb_endpoint_type(ep->desc)) { case USB_ENDPOINT_XFER_CONTROL: type = "Control"; break; case USB_ENDPOINT_XFER_ISOC: type = "Isoc"; break; case USB_ENDPOINT_XFER_BULK: type = "Bulk"; break; case USB_ENDPOINT_XFER_INT: type = "Interrupt"; break; } return sysfs_emit(buf, "%s\n", type); } static DEVICE_ATTR_RO(type); static ssize_t interval_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ep_device *ep = to_ep_device(dev); unsigned int interval; char unit; interval = usb_decode_interval(ep->desc, ep->udev->speed); if (interval % 1000) { unit = 'u'; } else { unit = 'm'; interval /= 1000; } return sysfs_emit(buf, "%d%cs\n", interval, unit); } static DEVICE_ATTR_RO(interval); static ssize_t direction_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ep_device *ep = to_ep_device(dev); char *direction; if (usb_endpoint_xfer_control(ep->desc)) direction = "both"; else if (usb_endpoint_dir_in(ep->desc)) direction = "in"; else direction = "out"; return sysfs_emit(buf, "%s\n", direction); } static DEVICE_ATTR_RO(direction); static struct attribute *ep_dev_attrs[] = { &dev_attr_bLength.attr, &dev_attr_bEndpointAddress.attr, &dev_attr_bmAttributes.attr, &dev_attr_bInterval.attr, &dev_attr_wMaxPacketSize.attr, &dev_attr_interval.attr, &dev_attr_type.attr, &dev_attr_direction.attr, NULL, }; static const struct attribute_group ep_dev_attr_grp = { .attrs = ep_dev_attrs, }; static const struct attribute_group *ep_dev_groups[] = { &ep_dev_attr_grp, NULL }; static void ep_device_release(struct device *dev) { struct ep_device *ep_dev = to_ep_device(dev); kfree(ep_dev); } const struct device_type usb_ep_device_type = { .name = "usb_endpoint", .release = ep_device_release, }; int usb_create_ep_devs(struct device *parent, struct usb_host_endpoint *endpoint, struct usb_device *udev) { struct ep_device *ep_dev; int retval; ep_dev = kzalloc(sizeof(*ep_dev), GFP_KERNEL); if (!ep_dev) { retval = -ENOMEM; goto exit; } ep_dev->desc = &endpoint->desc; ep_dev->udev = udev; ep_dev->dev.groups = ep_dev_groups; ep_dev->dev.type = &usb_ep_device_type; ep_dev->dev.parent = parent; dev_set_name(&ep_dev->dev, "ep_%02x", endpoint->desc.bEndpointAddress); retval = device_register(&ep_dev->dev); if (retval) goto error_register; device_enable_async_suspend(&ep_dev->dev); endpoint->ep_dev = ep_dev; return retval; error_register: put_device(&ep_dev->dev); exit: return retval; } void usb_remove_ep_devs(struct usb_host_endpoint *endpoint) { struct ep_device *ep_dev = endpoint->ep_dev; if (ep_dev) { device_unregister(&ep_dev->dev); endpoint->ep_dev = NULL; } } |
| 19 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 | // SPDX-License-Identifier: GPL-2.0-or-later /* * net/sched/gen_estimator.c Simple rate estimator. * * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> * Eric Dumazet <edumazet@google.com> * * Changes: * Jamal Hadi Salim - moved it to net/core and reshulfed * names to make it usable in general net subsystem. */ #include <linux/uaccess.h> #include <linux/bitops.h> #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/jiffies.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/socket.h> #include <linux/sockios.h> #include <linux/in.h> #include <linux/errno.h> #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/rtnetlink.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/seqlock.h> #include <net/sock.h> #include <net/gen_stats.h> /* This code is NOT intended to be used for statistics collection, * its purpose is to provide a base for statistical multiplexing * for controlled load service. * If you need only statistics, run a user level daemon which * periodically reads byte counters. */ struct net_rate_estimator { struct gnet_stats_basic_sync *bstats; spinlock_t *stats_lock; bool running; struct gnet_stats_basic_sync __percpu *cpu_bstats; u8 ewma_log; u8 intvl_log; /* period : (250ms << intvl_log) */ seqcount_t seq; u64 last_packets; u64 last_bytes; u64 avpps; u64 avbps; unsigned long next_jiffies; struct timer_list timer; struct rcu_head rcu; }; static void est_fetch_counters(struct net_rate_estimator *e, struct gnet_stats_basic_sync *b) { gnet_stats_basic_sync_init(b); if (e->stats_lock) spin_lock(e->stats_lock); gnet_stats_add_basic(b, e->cpu_bstats, e->bstats, e->running); if (e->stats_lock) spin_unlock(e->stats_lock); } static void est_timer(struct timer_list *t) { struct net_rate_estimator *est = timer_container_of(est, t, timer); struct gnet_stats_basic_sync b; u64 b_bytes, b_packets; u64 rate, brate; est_fetch_counters(est, &b); b_bytes = u64_stats_read(&b.bytes); b_packets = u64_stats_read(&b.packets); brate = (b_bytes - est->last_bytes) << (10 - est->intvl_log); brate = (brate >> est->ewma_log) - (est->avbps >> est->ewma_log); rate = (b_packets - est->last_packets) << (10 - est->intvl_log); rate = (rate >> est->ewma_log) - (est->avpps >> est->ewma_log); preempt_disable_nested(); write_seqcount_begin(&est->seq); est->avbps += brate; est->avpps += rate; write_seqcount_end(&est->seq); preempt_enable_nested(); est->last_bytes = b_bytes; est->last_packets = b_packets; est->next_jiffies += ((HZ/4) << est->intvl_log); if (unlikely(time_after_eq(jiffies, est->next_jiffies))) { /* Ouch... timer was delayed. */ est->next_jiffies = jiffies + 1; } mod_timer(&est->timer, est->next_jiffies); } /** * gen_new_estimator - create a new rate estimator * @bstats: basic statistics * @cpu_bstats: bstats per cpu * @rate_est: rate estimator statistics * @lock: lock for statistics and control path * @running: true if @bstats represents a running qdisc, thus @bstats' * internal values might change during basic reads. Only used * if @bstats_cpu is NULL * @opt: rate estimator configuration TLV * * Creates a new rate estimator with &bstats as source and &rate_est * as destination. A new timer with the interval specified in the * configuration TLV is created. Upon each interval, the latest statistics * will be read from &bstats and the estimated rate will be stored in * &rate_est with the statistics lock grabbed during this period. * * Returns 0 on success or a negative error code. * */ int gen_new_estimator(struct gnet_stats_basic_sync *bstats, struct gnet_stats_basic_sync __percpu *cpu_bstats, struct net_rate_estimator __rcu **rate_est, spinlock_t *lock, bool running, struct nlattr *opt) { struct gnet_estimator *parm = nla_data(opt); struct net_rate_estimator *old, *est; struct gnet_stats_basic_sync b; int intvl_log; if (nla_len(opt) < sizeof(*parm)) return -EINVAL; /* allowed timer periods are : * -2 : 250ms, -1 : 500ms, 0 : 1 sec * 1 : 2 sec, 2 : 4 sec, 3 : 8 sec */ if (parm->interval < -2 || parm->interval > 3) return -EINVAL; if (parm->ewma_log == 0 || parm->ewma_log >= 31) return -EINVAL; est = kzalloc(sizeof(*est), GFP_KERNEL); if (!est) return -ENOBUFS; seqcount_init(&est->seq); intvl_log = parm->interval + 2; est->bstats = bstats; est->stats_lock = lock; est->running = running; est->ewma_log = parm->ewma_log; est->intvl_log = intvl_log; est->cpu_bstats = cpu_bstats; if (lock) local_bh_disable(); est_fetch_counters(est, &b); if (lock) local_bh_enable(); est->last_bytes = u64_stats_read(&b.bytes); est->last_packets = u64_stats_read(&b.packets); if (lock) spin_lock_bh(lock); old = rcu_dereference_protected(*rate_est, 1); if (old) { timer_delete_sync(&old->timer); est->avbps = old->avbps; est->avpps = old->avpps; } est->next_jiffies = jiffies + ((HZ/4) << intvl_log); timer_setup(&est->timer, est_timer, 0); mod_timer(&est->timer, est->next_jiffies); rcu_assign_pointer(*rate_est, est); if (lock) spin_unlock_bh(lock); if (old) kfree_rcu(old, rcu); return 0; } EXPORT_SYMBOL(gen_new_estimator); /** * gen_kill_estimator - remove a rate estimator * @rate_est: rate estimator * * Removes the rate estimator. * */ void gen_kill_estimator(struct net_rate_estimator __rcu **rate_est) { struct net_rate_estimator *est; est = unrcu_pointer(xchg(rate_est, NULL)); if (est) { timer_shutdown_sync(&est->timer); kfree_rcu(est, rcu); } } EXPORT_SYMBOL(gen_kill_estimator); /** * gen_replace_estimator - replace rate estimator configuration * @bstats: basic statistics * @cpu_bstats: bstats per cpu * @rate_est: rate estimator statistics * @lock: lock for statistics and control path * @running: true if @bstats represents a running qdisc, thus @bstats' * internal values might change during basic reads. Only used * if @cpu_bstats is NULL * @opt: rate estimator configuration TLV * * Replaces the configuration of a rate estimator by calling * gen_kill_estimator() and gen_new_estimator(). * * Returns 0 on success or a negative error code. */ int gen_replace_estimator(struct gnet_stats_basic_sync *bstats, struct gnet_stats_basic_sync __percpu *cpu_bstats, struct net_rate_estimator __rcu **rate_est, spinlock_t *lock, bool running, struct nlattr *opt) { return gen_new_estimator(bstats, cpu_bstats, rate_est, lock, running, opt); } EXPORT_SYMBOL(gen_replace_estimator); /** * gen_estimator_active - test if estimator is currently in use * @rate_est: rate estimator * * Returns true if estimator is active, and false if not. */ bool gen_estimator_active(struct net_rate_estimator __rcu **rate_est) { return !!rcu_access_pointer(*rate_est); } EXPORT_SYMBOL(gen_estimator_active); bool gen_estimator_read(struct net_rate_estimator __rcu **rate_est, struct gnet_stats_rate_est64 *sample) { struct net_rate_estimator *est; unsigned seq; rcu_read_lock(); est = rcu_dereference(*rate_est); if (!est) { rcu_read_unlock(); return false; } do { seq = read_seqcount_begin(&est->seq); sample->bps = est->avbps >> 8; sample->pps = est->avpps >> 8; } while (read_seqcount_retry(&est->seq, seq)); rcu_read_unlock(); return true; } EXPORT_SYMBOL(gen_estimator_read); |
| 2 1 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 | // SPDX-License-Identifier: GPL-2.0 /* * USB Serial Converter Generic functions * * Copyright (C) 2010 - 2013 Johan Hovold (jhovold@gmail.com) * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com) */ #include <linux/kernel.h> #include <linux/sched/signal.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/sysrq.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include <linux/uaccess.h> #include <linux/kfifo.h> #include <linux/serial.h> #ifdef CONFIG_USB_SERIAL_GENERIC static __u16 vendor = 0x05f9; static __u16 product = 0xffff; module_param(vendor, ushort, 0); MODULE_PARM_DESC(vendor, "User specified USB idVendor"); module_param(product, ushort, 0); MODULE_PARM_DESC(product, "User specified USB idProduct"); static struct usb_device_id generic_device_ids[2]; /* Initially all zeroes. */ static int usb_serial_generic_probe(struct usb_serial *serial, const struct usb_device_id *id) { struct device *dev = &serial->interface->dev; dev_info(dev, "The \"generic\" usb-serial driver is only for testing and one-off prototypes.\n"); dev_info(dev, "Tell linux-usb@vger.kernel.org to add your device to a proper driver.\n"); return 0; } static int usb_serial_generic_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds) { struct device *dev = &serial->interface->dev; int num_ports; num_ports = max(epds->num_bulk_in, epds->num_bulk_out); if (num_ports == 0) { dev_err(dev, "device has no bulk endpoints\n"); return -ENODEV; } return num_ports; } static struct usb_serial_driver usb_serial_generic_device = { .driver = { .name = "generic", }, .id_table = generic_device_ids, .probe = usb_serial_generic_probe, .calc_num_ports = usb_serial_generic_calc_num_ports, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, .resume = usb_serial_generic_resume, }; static struct usb_serial_driver * const serial_drivers[] = { &usb_serial_generic_device, NULL }; #endif int usb_serial_generic_register(void) { int retval = 0; #ifdef CONFIG_USB_SERIAL_GENERIC generic_device_ids[0].idVendor = vendor; generic_device_ids[0].idProduct = product; generic_device_ids[0].match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT; retval = usb_serial_register_drivers(serial_drivers, "usbserial_generic", generic_device_ids); #endif return retval; } void usb_serial_generic_deregister(void) { #ifdef CONFIG_USB_SERIAL_GENERIC usb_serial_deregister_drivers(serial_drivers); #endif } int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port) { int result = 0; clear_bit(USB_SERIAL_THROTTLED, &port->flags); if (port->bulk_in_size) result = usb_serial_generic_submit_read_urbs(port, GFP_KERNEL); return result; } EXPORT_SYMBOL_GPL(usb_serial_generic_open); void usb_serial_generic_close(struct usb_serial_port *port) { unsigned long flags; int i; if (port->bulk_out_size) { for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) usb_kill_urb(port->write_urbs[i]); spin_lock_irqsave(&port->lock, flags); kfifo_reset_out(&port->write_fifo); spin_unlock_irqrestore(&port->lock, flags); } if (port->bulk_in_size) { for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) usb_kill_urb(port->read_urbs[i]); } } EXPORT_SYMBOL_GPL(usb_serial_generic_close); int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, void *dest, size_t size) { return kfifo_out_locked(&port->write_fifo, dest, size, &port->lock); } /** * usb_serial_generic_write_start - start writing buffered data * @port: usb-serial port * @mem_flags: flags to use for memory allocations * * Serialised using USB_SERIAL_WRITE_BUSY flag. * * Return: Zero on success or if busy, otherwise a negative errno value. */ int usb_serial_generic_write_start(struct usb_serial_port *port, gfp_t mem_flags) { struct urb *urb; int count, result; unsigned long flags; int i; if (test_and_set_bit_lock(USB_SERIAL_WRITE_BUSY, &port->flags)) return 0; retry: spin_lock_irqsave(&port->lock, flags); if (!port->write_urbs_free || !kfifo_len(&port->write_fifo)) { clear_bit_unlock(USB_SERIAL_WRITE_BUSY, &port->flags); spin_unlock_irqrestore(&port->lock, flags); return 0; } i = (int)find_first_bit(&port->write_urbs_free, ARRAY_SIZE(port->write_urbs)); spin_unlock_irqrestore(&port->lock, flags); urb = port->write_urbs[i]; count = port->serial->type->prepare_write_buffer(port, urb->transfer_buffer, port->bulk_out_size); urb->transfer_buffer_length = count; usb_serial_debug_data(&port->dev, __func__, count, urb->transfer_buffer); spin_lock_irqsave(&port->lock, flags); port->tx_bytes += count; spin_unlock_irqrestore(&port->lock, flags); clear_bit(i, &port->write_urbs_free); result = usb_submit_urb(urb, mem_flags); if (result) { dev_err_console(port, "%s - error submitting urb: %d\n", __func__, result); set_bit(i, &port->write_urbs_free); spin_lock_irqsave(&port->lock, flags); port->tx_bytes -= count; spin_unlock_irqrestore(&port->lock, flags); clear_bit_unlock(USB_SERIAL_WRITE_BUSY, &port->flags); return result; } goto retry; /* try sending off another urb */ } EXPORT_SYMBOL_GPL(usb_serial_generic_write_start); /** * usb_serial_generic_write - generic write function * @tty: tty for the port * @port: usb-serial port * @buf: data to write * @count: number of bytes to write * * Return: The number of characters buffered, which may be anything from * zero to @count, or a negative errno value. */ int usb_serial_generic_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { int result; if (!port->bulk_out_size) return -ENODEV; if (!count) return 0; count = kfifo_in_locked(&port->write_fifo, buf, count, &port->lock); result = usb_serial_generic_write_start(port, GFP_ATOMIC); if (result) return result; return count; } EXPORT_SYMBOL_GPL(usb_serial_generic_write); unsigned int usb_serial_generic_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; unsigned long flags; unsigned int room; if (!port->bulk_out_size) return 0; spin_lock_irqsave(&port->lock, flags); room = kfifo_avail(&port->write_fifo); spin_unlock_irqrestore(&port->lock, flags); dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); return room; } unsigned int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; unsigned long flags; unsigned int chars; if (!port->bulk_out_size) return 0; spin_lock_irqsave(&port->lock, flags); chars = kfifo_len(&port->write_fifo) + port->tx_bytes; spin_unlock_irqrestore(&port->lock, flags); dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); return chars; } EXPORT_SYMBOL_GPL(usb_serial_generic_chars_in_buffer); void usb_serial_generic_wait_until_sent(struct tty_struct *tty, long timeout) { struct usb_serial_port *port = tty->driver_data; unsigned int bps; unsigned long period; unsigned long expire; bps = tty_get_baud_rate(tty); if (!bps) bps = 9600; /* B0 */ /* * Use a poll-period of roughly the time it takes to send one * character or at least one jiffy. */ period = max_t(unsigned long, (10 * HZ / bps), 1); if (timeout) period = min_t(unsigned long, period, timeout); dev_dbg(&port->dev, "%s - timeout = %u ms, period = %u ms\n", __func__, jiffies_to_msecs(timeout), jiffies_to_msecs(period)); expire = jiffies + timeout; while (!port->serial->type->tx_empty(port)) { schedule_timeout_interruptible(period); if (signal_pending(current)) break; if (timeout && time_after(jiffies, expire)) break; } } EXPORT_SYMBOL_GPL(usb_serial_generic_wait_until_sent); static int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, int index, gfp_t mem_flags) { int res; if (!test_and_clear_bit(index, &port->read_urbs_free)) return 0; dev_dbg(&port->dev, "%s - urb %d\n", __func__, index); res = usb_submit_urb(port->read_urbs[index], mem_flags); if (res) { if (res != -EPERM && res != -ENODEV) { dev_err(&port->dev, "%s - usb_submit_urb failed: %d\n", __func__, res); } set_bit(index, &port->read_urbs_free); return res; } return 0; } int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port, gfp_t mem_flags) { int res; int i; for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) { res = usb_serial_generic_submit_read_urb(port, i, mem_flags); if (res) goto err; } return 0; err: for (; i >= 0; --i) usb_kill_urb(port->read_urbs[i]); return res; } EXPORT_SYMBOL_GPL(usb_serial_generic_submit_read_urbs); void usb_serial_generic_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; char *ch = urb->transfer_buffer; int i; if (!urb->actual_length) return; /* * The per character mucking around with sysrq path it too slow for * stuff like 3G modems, so shortcircuit it in the 99.9999999% of * cases where the USB serial is not a console anyway. */ if (port->sysrq) { for (i = 0; i < urb->actual_length; i++, ch++) { if (!usb_serial_handle_sysrq_char(port, *ch)) tty_insert_flip_char(&port->port, *ch, TTY_NORMAL); } } else { tty_insert_flip_string(&port->port, ch, urb->actual_length); } tty_flip_buffer_push(&port->port); } EXPORT_SYMBOL_GPL(usb_serial_generic_process_read_urb); void usb_serial_generic_read_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; unsigned char *data = urb->transfer_buffer; bool stopped = false; int status = urb->status; int i; for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) { if (urb == port->read_urbs[i]) break; } dev_dbg(&port->dev, "%s - urb %d, len %d\n", __func__, i, urb->actual_length); switch (status) { case 0: usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); port->serial->type->process_read_urb(urb); break; case -ENOENT: case -ECONNRESET: case -ESHUTDOWN: dev_dbg(&port->dev, "%s - urb stopped: %d\n", __func__, status); stopped = true; break; case -EPIPE: dev_err(&port->dev, "%s - urb stopped: %d\n", __func__, status); stopped = true; break; default: dev_dbg(&port->dev, "%s - nonzero urb status: %d\n", __func__, status); break; } /* * Make sure URB processing is done before marking as free to avoid * racing with unthrottle() on another CPU. Matches the barriers * implied by the test_and_clear_bit() in * usb_serial_generic_submit_read_urb(). */ smp_mb__before_atomic(); set_bit(i, &port->read_urbs_free); /* * Make sure URB is marked as free before checking the throttled flag * to avoid racing with unthrottle() on another CPU. Matches the * smp_mb__after_atomic() in unthrottle(). */ smp_mb__after_atomic(); if (stopped) return; if (test_bit(USB_SERIAL_THROTTLED, &port->flags)) return; usb_serial_generic_submit_read_urb(port, i, GFP_ATOMIC); } EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback); void usb_serial_generic_write_bulk_callback(struct urb *urb) { unsigned long flags; struct usb_serial_port *port = urb->context; int status = urb->status; int i; for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) { if (port->write_urbs[i] == urb) break; } spin_lock_irqsave(&port->lock, flags); port->tx_bytes -= urb->transfer_buffer_length; set_bit(i, &port->write_urbs_free); spin_unlock_irqrestore(&port->lock, flags); switch (status) { case 0: break; case -ENOENT: case -ECONNRESET: case -ESHUTDOWN: dev_dbg(&port->dev, "%s - urb stopped: %d\n", __func__, status); return; case -EPIPE: dev_err_console(port, "%s - urb stopped: %d\n", __func__, status); return; default: dev_err_console(port, "%s - nonzero urb status: %d\n", __func__, status); break; } usb_serial_generic_write_start(port, GFP_ATOMIC); usb_serial_port_softint(port); } EXPORT_SYMBOL_GPL(usb_serial_generic_write_bulk_callback); void usb_serial_generic_throttle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; set_bit(USB_SERIAL_THROTTLED, &port->flags); } EXPORT_SYMBOL_GPL(usb_serial_generic_throttle); void usb_serial_generic_unthrottle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; clear_bit(USB_SERIAL_THROTTLED, &port->flags); /* * Matches the smp_mb__after_atomic() in * usb_serial_generic_read_bulk_callback(). */ smp_mb__after_atomic(); usb_serial_generic_submit_read_urbs(port, GFP_KERNEL); } EXPORT_SYMBOL_GPL(usb_serial_generic_unthrottle); static bool usb_serial_generic_msr_changed(struct tty_struct *tty, unsigned long arg, struct async_icount *cprev) { struct usb_serial_port *port = tty->driver_data; struct async_icount cnow; unsigned long flags; bool ret; /* * Use tty-port initialised flag to detect all hangups including the * one generated at USB-device disconnect. */ if (!tty_port_initialized(&port->port)) return true; spin_lock_irqsave(&port->lock, flags); cnow = port->icount; /* atomic copy*/ spin_unlock_irqrestore(&port->lock, flags); ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); *cprev = cnow; return ret; } int usb_serial_generic_tiocmiwait(struct tty_struct *tty, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; struct async_icount cnow; unsigned long flags; int ret; spin_lock_irqsave(&port->lock, flags); cnow = port->icount; /* atomic copy */ spin_unlock_irqrestore(&port->lock, flags); ret = wait_event_interruptible(port->port.delta_msr_wait, usb_serial_generic_msr_changed(tty, arg, &cnow)); if (!ret && !tty_port_initialized(&port->port)) ret = -EIO; return ret; } EXPORT_SYMBOL_GPL(usb_serial_generic_tiocmiwait); int usb_serial_generic_get_icount(struct tty_struct *tty, struct serial_icounter_struct *icount) { struct usb_serial_port *port = tty->driver_data; struct async_icount cnow; unsigned long flags; spin_lock_irqsave(&port->lock, flags); cnow = port->icount; /* atomic copy */ spin_unlock_irqrestore(&port->lock, flags); icount->cts = cnow.cts; icount->dsr = cnow.dsr; icount->rng = cnow.rng; icount->dcd = cnow.dcd; icount->tx = cnow.tx; icount->rx = cnow.rx; icount->frame = cnow.frame; icount->parity = cnow.parity; icount->overrun = cnow.overrun; icount->brk = cnow.brk; icount->buf_overrun = cnow.buf_overrun; return 0; } EXPORT_SYMBOL_GPL(usb_serial_generic_get_icount); #if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) { if (port->sysrq) { if (ch && time_before(jiffies, port->sysrq)) { handle_sysrq(ch); port->sysrq = 0; return 1; } port->sysrq = 0; } return 0; } EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char); int usb_serial_handle_break(struct usb_serial_port *port) { if (!port->port.console) return 0; if (!port->sysrq) { port->sysrq = jiffies + HZ*5; return 1; } port->sysrq = 0; return 0; } EXPORT_SYMBOL_GPL(usb_serial_handle_break); #endif /** * usb_serial_handle_dcd_change - handle a change of carrier detect state * @port: usb-serial port * @tty: tty for the port * @status: new carrier detect status, nonzero if active */ void usb_serial_handle_dcd_change(struct usb_serial_port *port, struct tty_struct *tty, unsigned int status) { dev_dbg(&port->dev, "%s - status %d\n", __func__, status); if (tty) { struct tty_ldisc *ld = tty_ldisc_ref(tty); if (ld) { if (ld->ops->dcd_change) ld->ops->dcd_change(tty, status); tty_ldisc_deref(ld); } } if (status) wake_up_interruptible(&port->port.open_wait); else if (tty && !C_CLOCAL(tty)) tty_hangup(tty); } EXPORT_SYMBOL_GPL(usb_serial_handle_dcd_change); int usb_serial_generic_resume(struct usb_serial *serial) { struct usb_serial_port *port; int i, c = 0, r; for (i = 0; i < serial->num_ports; i++) { port = serial->port[i]; if (!tty_port_initialized(&port->port)) continue; if (port->bulk_in_size) { r = usb_serial_generic_submit_read_urbs(port, GFP_NOIO); if (r < 0) c++; } if (port->bulk_out_size) { r = usb_serial_generic_write_start(port, GFP_NOIO); if (r < 0) c++; } } return c ? -EIO : 0; } EXPORT_SYMBOL_GPL(usb_serial_generic_resume); |
| 2 2 1 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | // SPDX-License-Identifier: GPL-2.0 /* * Generic USB GNSS receiver driver * * Copyright (C) 2021 Johan Hovold <johan@kernel.org> */ #include <linux/errno.h> #include <linux/gnss.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/usb.h> #define GNSS_USB_READ_BUF_LEN 512 #define GNSS_USB_WRITE_TIMEOUT 1000 static const struct usb_device_id gnss_usb_id_table[] = { { USB_DEVICE(0x1199, 0xb000) }, /* Sierra Wireless XM1210 */ { } }; MODULE_DEVICE_TABLE(usb, gnss_usb_id_table); struct gnss_usb { struct usb_device *udev; struct usb_interface *intf; struct gnss_device *gdev; struct urb *read_urb; unsigned int write_pipe; }; static void gnss_usb_rx_complete(struct urb *urb) { struct gnss_usb *gusb = urb->context; struct gnss_device *gdev = gusb->gdev; int status = urb->status; int len; int ret; switch (status) { case 0: break; case -ENOENT: case -ECONNRESET: case -ESHUTDOWN: dev_dbg(&gdev->dev, "urb stopped: %d\n", status); return; case -EPIPE: dev_err(&gdev->dev, "urb stopped: %d\n", status); return; default: dev_dbg(&gdev->dev, "nonzero urb status: %d\n", status); goto resubmit; } len = urb->actual_length; if (len == 0) goto resubmit; ret = gnss_insert_raw(gdev, urb->transfer_buffer, len); if (ret < len) dev_dbg(&gdev->dev, "dropped %d bytes\n", len - ret); resubmit: ret = usb_submit_urb(urb, GFP_ATOMIC); if (ret && ret != -EPERM && ret != -ENODEV) dev_err(&gdev->dev, "failed to resubmit urb: %d\n", ret); } static int gnss_usb_open(struct gnss_device *gdev) { struct gnss_usb *gusb = gnss_get_drvdata(gdev); int ret; ret = usb_submit_urb(gusb->read_urb, GFP_KERNEL); if (ret) { if (ret != -EPERM && ret != -ENODEV) dev_err(&gdev->dev, "failed to submit urb: %d\n", ret); return ret; } return 0; } static void gnss_usb_close(struct gnss_device *gdev) { struct gnss_usb *gusb = gnss_get_drvdata(gdev); usb_kill_urb(gusb->read_urb); } static int gnss_usb_write_raw(struct gnss_device *gdev, const unsigned char *buf, size_t count) { struct gnss_usb *gusb = gnss_get_drvdata(gdev); void *tbuf; int ret; tbuf = kmemdup(buf, count, GFP_KERNEL); if (!tbuf) return -ENOMEM; ret = usb_bulk_msg(gusb->udev, gusb->write_pipe, tbuf, count, NULL, GNSS_USB_WRITE_TIMEOUT); kfree(tbuf); if (ret) return ret; return count; } static const struct gnss_operations gnss_usb_gnss_ops = { .open = gnss_usb_open, .close = gnss_usb_close, .write_raw = gnss_usb_write_raw, }; static int gnss_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *udev = interface_to_usbdev(intf); struct usb_endpoint_descriptor *in, *out; struct gnss_device *gdev; struct gnss_usb *gusb; struct urb *urb; size_t buf_len; void *buf; int ret; ret = usb_find_common_endpoints(intf->cur_altsetting, &in, &out, NULL, NULL); if (ret) return ret; gusb = kzalloc(sizeof(*gusb), GFP_KERNEL); if (!gusb) return -ENOMEM; gdev = gnss_allocate_device(&intf->dev); if (!gdev) { ret = -ENOMEM; goto err_free_gusb; } gdev->ops = &gnss_usb_gnss_ops; gdev->type = GNSS_TYPE_NMEA; gnss_set_drvdata(gdev, gusb); urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) { ret = -ENOMEM; goto err_put_gdev; } buf_len = max(usb_endpoint_maxp(in), GNSS_USB_READ_BUF_LEN); buf = kzalloc(buf_len, GFP_KERNEL); if (!buf) { ret = -ENOMEM; goto err_free_urb; } usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, usb_endpoint_num(in)), buf, buf_len, gnss_usb_rx_complete, gusb); gusb->intf = intf; gusb->udev = udev; gusb->gdev = gdev; gusb->read_urb = urb; gusb->write_pipe = usb_sndbulkpipe(udev, usb_endpoint_num(out)); ret = gnss_register_device(gdev); if (ret) goto err_free_buf; usb_set_intfdata(intf, gusb); return 0; err_free_buf: kfree(buf); err_free_urb: usb_free_urb(urb); err_put_gdev: gnss_put_device(gdev); err_free_gusb: kfree(gusb); return ret; } static void gnss_usb_disconnect(struct usb_interface *intf) { struct gnss_usb *gusb = usb_get_intfdata(intf); gnss_deregister_device(gusb->gdev); kfree(gusb->read_urb->transfer_buffer); usb_free_urb(gusb->read_urb); gnss_put_device(gusb->gdev); kfree(gusb); } static struct usb_driver gnss_usb_driver = { .name = "gnss-usb", .probe = gnss_usb_probe, .disconnect = gnss_usb_disconnect, .id_table = gnss_usb_id_table, }; module_usb_driver(gnss_usb_driver); MODULE_AUTHOR("Johan Hovold <johan@kernel.org>"); MODULE_DESCRIPTION("Generic USB GNSS receiver driver"); MODULE_LICENSE("GPL v2"); |
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SPDX-License-Identifier: GPL-2.0-only /* * linux/kernel/reboot.c * * Copyright (C) 2013 Linus Torvalds */ #define pr_fmt(fmt) "reboot: " fmt #include <linux/atomic.h> #include <linux/ctype.h> #include <linux/export.h> #include <linux/kexec.h> #include <linux/kmod.h> #include <linux/kmsg_dump.h> #include <linux/reboot.h> #include <linux/suspend.h> #include <linux/syscalls.h> #include <linux/syscore_ops.h> #include <linux/uaccess.h> /* * this indicates whether you can reboot with ctrl-alt-del: the default is yes */ static int C_A_D = 1; struct pid *cad_pid; EXPORT_SYMBOL(cad_pid); #if defined(CONFIG_ARM) #define DEFAULT_REBOOT_MODE = REBOOT_HARD #else #define DEFAULT_REBOOT_MODE #endif enum reboot_mode reboot_mode DEFAULT_REBOOT_MODE; EXPORT_SYMBOL_GPL(reboot_mode); enum reboot_mode panic_reboot_mode = REBOOT_UNDEFINED; static enum hw_protection_action hw_protection_action = HWPROT_ACT_SHUTDOWN; /* * This variable is used privately to keep track of whether or not * reboot_type is still set to its default value (i.e., reboot= hasn't * been set on the command line). This is needed so that we can * suppress DMI scanning for reboot quirks. Without it, it's * impossible to override a faulty reboot quirk without recompiling. */ int reboot_default = 1; int reboot_cpu; enum reboot_type reboot_type = BOOT_ACPI; int reboot_force; struct sys_off_handler { struct notifier_block nb; int (*sys_off_cb)(struct sys_off_data *data); void *cb_data; enum sys_off_mode mode; bool blocking; void *list; struct device *dev; }; /* * This variable is used to indicate if a halt was initiated instead of a * reboot when the reboot call was invoked with LINUX_REBOOT_CMD_POWER_OFF, but * the system cannot be powered off. This allowes kernel_halt() to notify users * of that. */ static bool poweroff_fallback_to_halt; /* * Temporary stub that prevents linkage failure while we're in process * of removing all uses of legacy pm_power_off() around the kernel. */ void __weak (*pm_power_off)(void); /* * Notifier list for kernel code which wants to be called * at shutdown. This is used to stop any idling DMA operations * and the like. */ static BLOCKING_NOTIFIER_HEAD(reboot_notifier_list); /** * emergency_restart - reboot the system * * Without shutting down any hardware or taking any locks * reboot the system. This is called when we know we are in * trouble so this is our best effort to reboot. This is * safe to call in interrupt context. */ void emergency_restart(void) { kmsg_dump(KMSG_DUMP_EMERG); system_state = SYSTEM_RESTART; machine_emergency_restart(); } EXPORT_SYMBOL_GPL(emergency_restart); void kernel_restart_prepare(char *cmd) { blocking_notifier_call_chain(&reboot_notifier_list, SYS_RESTART, cmd); system_state = SYSTEM_RESTART; usermodehelper_disable(); device_shutdown(); } /** * register_reboot_notifier - Register function to be called at reboot time * @nb: Info about notifier function to be called * * Registers a function with the list of functions * to be called at reboot time. * * Currently always returns zero, as blocking_notifier_chain_register() * always returns zero. */ int register_reboot_notifier(struct notifier_block *nb) { return blocking_notifier_chain_register(&reboot_notifier_list, nb); } EXPORT_SYMBOL(register_reboot_notifier); /** * unregister_reboot_notifier - Unregister previously registered reboot notifier * @nb: Hook to be unregistered * * Unregisters a previously registered reboot * notifier function. * * Returns zero on success, or %-ENOENT on failure. */ int unregister_reboot_notifier(struct notifier_block *nb) { return blocking_notifier_chain_unregister(&reboot_notifier_list, nb); } EXPORT_SYMBOL(unregister_reboot_notifier); static void devm_unregister_reboot_notifier(struct device *dev, void *res) { WARN_ON(unregister_reboot_notifier(*(struct notifier_block **)res)); } int devm_register_reboot_notifier(struct device *dev, struct notifier_block *nb) { struct notifier_block **rcnb; int ret; rcnb = devres_alloc(devm_unregister_reboot_notifier, sizeof(*rcnb), GFP_KERNEL); if (!rcnb) return -ENOMEM; ret = register_reboot_notifier(nb); if (!ret) { *rcnb = nb; devres_add(dev, rcnb); } else { devres_free(rcnb); } return ret; } EXPORT_SYMBOL(devm_register_reboot_notifier); /* * Notifier list for kernel code which wants to be called * to restart the system. */ static ATOMIC_NOTIFIER_HEAD(restart_handler_list); /** * register_restart_handler - Register function to be called to reset * the system * @nb: Info about handler function to be called * @nb->priority: Handler priority. Handlers should follow the * following guidelines for setting priorities. * 0: Restart handler of last resort, * with limited restart capabilities * 128: Default restart handler; use if no other * restart handler is expected to be available, * and/or if restart functionality is * sufficient to restart the entire system * 255: Highest priority restart handler, will * preempt all other restart handlers * * Registers a function with code to be called to restart the * system. * * Registered functions will be called from machine_restart as last * step of the restart sequence (if the architecture specific * machine_restart function calls do_kernel_restart - see below * for details). * Registered functions are expected to restart the system immediately. * If more than one function is registered, the restart handler priority * selects which function will be called first. * * Restart handlers are expected to be registered from non-architecture * code, typically from drivers. A typical use case would be a system * where restart functionality is provided through a watchdog. Multiple * restart handlers may exist; for example, one restart handler might * restart the entire system, while another only restarts the CPU. * In such cases, the restart handler which only restarts part of the * hardware is expected to register with low priority to ensure that * it only runs if no other means to restart the system is available. * * Currently always returns zero, as atomic_notifier_chain_register() * always returns zero. */ int register_restart_handler(struct notifier_block *nb) { return atomic_notifier_chain_register(&restart_handler_list, nb); } EXPORT_SYMBOL(register_restart_handler); /** * unregister_restart_handler - Unregister previously registered * restart handler * @nb: Hook to be unregistered * * Unregisters a previously registered restart handler function. * * Returns zero on success, or %-ENOENT on failure. */ int unregister_restart_handler(struct notifier_block *nb) { return atomic_notifier_chain_unregister(&restart_handler_list, nb); } EXPORT_SYMBOL(unregister_restart_handler); /** * do_kernel_restart - Execute kernel restart handler call chain * * @cmd: pointer to buffer containing command to execute for restart * or %NULL * * Calls functions registered with register_restart_handler. * * Expected to be called from machine_restart as last step of the restart * sequence. * * Restarts the system immediately if a restart handler function has been * registered. Otherwise does nothing. */ void do_kernel_restart(char *cmd) { atomic_notifier_call_chain(&restart_handler_list, reboot_mode, cmd); } void migrate_to_reboot_cpu(void) { /* The boot cpu is always logical cpu 0 */ int cpu = reboot_cpu; cpu_hotplug_disable(); /* Make certain the cpu I'm about to reboot on is online */ if (!cpu_online(cpu)) cpu = cpumask_first(cpu_online_mask); /* Prevent races with other tasks migrating this task */ current->flags |= PF_NO_SETAFFINITY; /* Make certain I only run on the appropriate processor */ set_cpus_allowed_ptr(current, cpumask_of(cpu)); } /* * Notifier list for kernel code which wants to be called * to prepare system for restart. */ static BLOCKING_NOTIFIER_HEAD(restart_prep_handler_list); static void do_kernel_restart_prepare(void) { blocking_notifier_call_chain(&restart_prep_handler_list, 0, NULL); } /** * kernel_restart - reboot the system * @cmd: pointer to buffer containing command to execute for restart * or %NULL * * Shutdown everything and perform a clean reboot. * This is not safe to call in interrupt context. */ void kernel_restart(char *cmd) { kernel_restart_prepare(cmd); do_kernel_restart_prepare(); migrate_to_reboot_cpu(); syscore_shutdown(); if (!cmd) pr_emerg("Restarting system\n"); else pr_emerg("Restarting system with command '%s'\n", cmd); kmsg_dump(KMSG_DUMP_SHUTDOWN); machine_restart(cmd); } EXPORT_SYMBOL_GPL(kernel_restart); static void kernel_shutdown_prepare(enum system_states state) { blocking_notifier_call_chain(&reboot_notifier_list, (state == SYSTEM_HALT) ? SYS_HALT : SYS_POWER_OFF, NULL); system_state = state; usermodehelper_disable(); device_shutdown(); } /** * kernel_halt - halt the system * * Shutdown everything and perform a clean system halt. */ void kernel_halt(void) { kernel_shutdown_prepare(SYSTEM_HALT); migrate_to_reboot_cpu(); syscore_shutdown(); if (poweroff_fallback_to_halt) pr_emerg("Power off not available: System halted instead\n"); else pr_emerg("System halted\n"); kmsg_dump(KMSG_DUMP_SHUTDOWN); machine_halt(); } EXPORT_SYMBOL_GPL(kernel_halt); /* * Notifier list for kernel code which wants to be called * to prepare system for power off. */ static BLOCKING_NOTIFIER_HEAD(power_off_prep_handler_list); /* * Notifier list for kernel code which wants to be called * to power off system. */ static ATOMIC_NOTIFIER_HEAD(power_off_handler_list); static int sys_off_notify(struct notifier_block *nb, unsigned long mode, void *cmd) { struct sys_off_handler *handler; struct sys_off_data data = {}; handler = container_of(nb, struct sys_off_handler, nb); data.cb_data = handler->cb_data; data.mode = mode; data.cmd = cmd; data.dev = handler->dev; return handler->sys_off_cb(&data); } static struct sys_off_handler platform_sys_off_handler; static struct sys_off_handler *alloc_sys_off_handler(int priority) { struct sys_off_handler *handler; gfp_t flags; /* * Platforms like m68k can't allocate sys_off handler dynamically * at the early boot time because memory allocator isn't available yet. */ if (priority == SYS_OFF_PRIO_PLATFORM) { handler = &platform_sys_off_handler; if (handler->cb_data) return ERR_PTR(-EBUSY); } else { if (system_state > SYSTEM_RUNNING) flags = GFP_ATOMIC; else flags = GFP_KERNEL; handler = kzalloc(sizeof(*handler), flags); if (!handler) return ERR_PTR(-ENOMEM); } return handler; } static void free_sys_off_handler(struct sys_off_handler *handler) { if (handler == &platform_sys_off_handler) memset(handler, 0, sizeof(*handler)); else kfree(handler); } /** * register_sys_off_handler - Register sys-off handler * @mode: Sys-off mode * @priority: Handler priority * @callback: Callback function * @cb_data: Callback argument * * Registers system power-off or restart handler that will be invoked * at the step corresponding to the given sys-off mode. Handler's callback * should return NOTIFY_DONE to permit execution of the next handler in * the call chain or NOTIFY_STOP to break the chain (in error case for * example). * * Multiple handlers can be registered at the default priority level. * * Only one handler can be registered at the non-default priority level, * otherwise ERR_PTR(-EBUSY) is returned. * * Returns a new instance of struct sys_off_handler on success, or * an ERR_PTR()-encoded error code otherwise. */ struct sys_off_handler * register_sys_off_handler(enum sys_off_mode mode, int priority, int (*callback)(struct sys_off_data *data), void *cb_data) { struct sys_off_handler *handler; int err; handler = alloc_sys_off_handler(priority); if (IS_ERR(handler)) return handler; switch (mode) { case SYS_OFF_MODE_POWER_OFF_PREPARE: handler->list = &power_off_prep_handler_list; handler->blocking = true; break; case SYS_OFF_MODE_POWER_OFF: handler->list = &power_off_handler_list; break; case SYS_OFF_MODE_RESTART_PREPARE: handler->list = &restart_prep_handler_list; handler->blocking = true; break; case SYS_OFF_MODE_RESTART: handler->list = &restart_handler_list; break; default: free_sys_off_handler(handler); return ERR_PTR(-EINVAL); } handler->nb.notifier_call = sys_off_notify; handler->nb.priority = priority; handler->sys_off_cb = callback; handler->cb_data = cb_data; handler->mode = mode; if (handler->blocking) { if (priority == SYS_OFF_PRIO_DEFAULT) err = blocking_notifier_chain_register(handler->list, &handler->nb); else err = blocking_notifier_chain_register_unique_prio(handler->list, &handler->nb); } else { if (priority == SYS_OFF_PRIO_DEFAULT) err = atomic_notifier_chain_register(handler->list, &handler->nb); else err = atomic_notifier_chain_register_unique_prio(handler->list, &handler->nb); } if (err) { free_sys_off_handler(handler); return ERR_PTR(err); } return handler; } EXPORT_SYMBOL_GPL(register_sys_off_handler); /** * unregister_sys_off_handler - Unregister sys-off handler * @handler: Sys-off handler * * Unregisters given sys-off handler. */ void unregister_sys_off_handler(struct sys_off_handler *handler) { int err; if (IS_ERR_OR_NULL(handler)) return; if (handler->blocking) err = blocking_notifier_chain_unregister(handler->list, &handler->nb); else err = atomic_notifier_chain_unregister(handler->list, &handler->nb); /* sanity check, shall never happen */ WARN_ON(err); free_sys_off_handler(handler); } EXPORT_SYMBOL_GPL(unregister_sys_off_handler); static void devm_unregister_sys_off_handler(void *data) { struct sys_off_handler *handler = data; unregister_sys_off_handler(handler); } /** * devm_register_sys_off_handler - Register sys-off handler * @dev: Device that registers handler * @mode: Sys-off mode * @priority: Handler priority * @callback: Callback function * @cb_data: Callback argument * * Registers resource-managed sys-off handler. * * Returns zero on success, or error code on failure. */ int devm_register_sys_off_handler(struct device *dev, enum sys_off_mode mode, int priority, int (*callback)(struct sys_off_data *data), void *cb_data) { struct sys_off_handler *handler; handler = register_sys_off_handler(mode, priority, callback, cb_data); if (IS_ERR(handler)) return PTR_ERR(handler); handler->dev = dev; return devm_add_action_or_reset(dev, devm_unregister_sys_off_handler, handler); } EXPORT_SYMBOL_GPL(devm_register_sys_off_handler); /** * devm_register_power_off_handler - Register power-off handler * @dev: Device that registers callback * @callback: Callback function * @cb_data: Callback's argument * * Registers resource-managed sys-off handler with a default priority * and using power-off mode. * * Returns zero on success, or error code on failure. */ int devm_register_power_off_handler(struct device *dev, int (*callback)(struct sys_off_data *data), void *cb_data) { return devm_register_sys_off_handler(dev, SYS_OFF_MODE_POWER_OFF, SYS_OFF_PRIO_DEFAULT, callback, cb_data); } EXPORT_SYMBOL_GPL(devm_register_power_off_handler); /** * devm_register_restart_handler - Register restart handler * @dev: Device that registers callback * @callback: Callback function * @cb_data: Callback's argument * * Registers resource-managed sys-off handler with a default priority * and using restart mode. * * Returns zero on success, or error code on failure. */ int devm_register_restart_handler(struct device *dev, int (*callback)(struct sys_off_data *data), void *cb_data) { return devm_register_sys_off_handler(dev, SYS_OFF_MODE_RESTART, SYS_OFF_PRIO_DEFAULT, callback, cb_data); } EXPORT_SYMBOL_GPL(devm_register_restart_handler); static struct sys_off_handler *platform_power_off_handler; static int platform_power_off_notify(struct sys_off_data *data) { void (*platform_power_power_off_cb)(void) = data->cb_data; platform_power_power_off_cb(); return NOTIFY_DONE; } /** * register_platform_power_off - Register platform-level power-off callback * @power_off: Power-off callback * * Registers power-off callback that will be called as last step * of the power-off sequence. This callback is expected to be invoked * for the last resort. Only one platform power-off callback is allowed * to be registered at a time. * * Returns zero on success, or error code on failure. */ int register_platform_power_off(void (*power_off)(void)) { struct sys_off_handler *handler; handler = register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, SYS_OFF_PRIO_PLATFORM, platform_power_off_notify, power_off); if (IS_ERR(handler)) return PTR_ERR(handler); platform_power_off_handler = handler; return 0; } EXPORT_SYMBOL_GPL(register_platform_power_off); /** * unregister_platform_power_off - Unregister platform-level power-off callback * @power_off: Power-off callback * * Unregisters previously registered platform power-off callback. */ void unregister_platform_power_off(void (*power_off)(void)) { if (platform_power_off_handler && platform_power_off_handler->cb_data == power_off) { unregister_sys_off_handler(platform_power_off_handler); platform_power_off_handler = NULL; } } EXPORT_SYMBOL_GPL(unregister_platform_power_off); static int legacy_pm_power_off(struct sys_off_data *data) { if (pm_power_off) pm_power_off(); return NOTIFY_DONE; } static void do_kernel_power_off_prepare(void) { blocking_notifier_call_chain(&power_off_prep_handler_list, 0, NULL); } /** * do_kernel_power_off - Execute kernel power-off handler call chain * * Expected to be called as last step of the power-off sequence. * * Powers off the system immediately if a power-off handler function has * been registered. Otherwise does nothing. */ void do_kernel_power_off(void) { struct sys_off_handler *sys_off = NULL; /* * Register sys-off handlers for legacy PM callback. This allows * legacy PM callbacks temporary co-exist with the new sys-off API. * * TODO: Remove legacy handlers once all legacy PM users will be * switched to the sys-off based APIs. */ if (pm_power_off) sys_off = register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, SYS_OFF_PRIO_DEFAULT, legacy_pm_power_off, NULL); atomic_notifier_call_chain(&power_off_handler_list, 0, NULL); unregister_sys_off_handler(sys_off); } /** * kernel_can_power_off - check whether system can be powered off * * Returns true if power-off handler is registered and system can be * powered off, false otherwise. */ bool kernel_can_power_off(void) { return !atomic_notifier_call_chain_is_empty(&power_off_handler_list) || pm_power_off; } EXPORT_SYMBOL_GPL(kernel_can_power_off); /** * kernel_power_off - power_off the system * * Shutdown everything and perform a clean system power_off. */ void kernel_power_off(void) { kernel_shutdown_prepare(SYSTEM_POWER_OFF); do_kernel_power_off_prepare(); migrate_to_reboot_cpu(); syscore_shutdown(); pr_emerg("Power down\n"); pr_flush(1000, true); kmsg_dump(KMSG_DUMP_SHUTDOWN); machine_power_off(); } EXPORT_SYMBOL_GPL(kernel_power_off); DEFINE_MUTEX(system_transition_mutex); /* * Reboot system call: for obvious reasons only root may call it, * and even root needs to set up some magic numbers in the registers * so that some mistake won't make this reboot the whole machine. * You can also set the meaning of the ctrl-alt-del-key here. * * reboot doesn't sync: do that yourself before calling this. */ SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd, void __user *, arg) { struct pid_namespace *pid_ns = task_active_pid_ns(current); char buffer[256]; int ret = 0; /* We only trust the superuser with rebooting the system. */ if (!ns_capable(pid_ns->user_ns, CAP_SYS_BOOT)) return -EPERM; /* For safety, we require "magic" arguments. */ if (magic1 != LINUX_REBOOT_MAGIC1 || (magic2 != LINUX_REBOOT_MAGIC2 && magic2 != LINUX_REBOOT_MAGIC2A && magic2 != LINUX_REBOOT_MAGIC2B && magic2 != LINUX_REBOOT_MAGIC2C)) return -EINVAL; /* * If pid namespaces are enabled and the current task is in a child * pid_namespace, the command is handled by reboot_pid_ns() which will * call do_exit(). */ ret = reboot_pid_ns(pid_ns, cmd); if (ret) return ret; /* Instead of trying to make the power_off code look like * halt when pm_power_off is not set do it the easy way. */ if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !kernel_can_power_off()) { poweroff_fallback_to_halt = true; cmd = LINUX_REBOOT_CMD_HALT; } mutex_lock(&system_transition_mutex); switch (cmd) { case LINUX_REBOOT_CMD_RESTART: kernel_restart(NULL); break; case LINUX_REBOOT_CMD_CAD_ON: C_A_D = 1; break; case LINUX_REBOOT_CMD_CAD_OFF: C_A_D = 0; break; case LINUX_REBOOT_CMD_HALT: kernel_halt(); do_exit(0); case LINUX_REBOOT_CMD_POWER_OFF: kernel_power_off(); do_exit(0); break; case LINUX_REBOOT_CMD_RESTART2: ret = strncpy_from_user(&buffer[0], arg, sizeof(buffer) - 1); if (ret < 0) { ret = -EFAULT; break; } buffer[sizeof(buffer) - 1] = '\0'; kernel_restart(buffer); break; #ifdef CONFIG_KEXEC_CORE case LINUX_REBOOT_CMD_KEXEC: ret = kernel_kexec(); break; #endif #ifdef CONFIG_HIBERNATION case LINUX_REBOOT_CMD_SW_SUSPEND: ret = hibernate(); break; #endif default: ret = -EINVAL; break; } mutex_unlock(&system_transition_mutex); return ret; } static void deferred_cad(struct work_struct *dummy) { kernel_restart(NULL); } /* * This function gets called by ctrl-alt-del - ie the keyboard interrupt. * As it's called within an interrupt, it may NOT sync: the only choice * is whether to reboot at once, or just ignore the ctrl-alt-del. */ void ctrl_alt_del(void) { static DECLARE_WORK(cad_work, deferred_cad); if (C_A_D) schedule_work(&cad_work); else kill_cad_pid(SIGINT, 1); } #define POWEROFF_CMD_PATH_LEN 256 static char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = "/sbin/poweroff"; static const char reboot_cmd[] = "/sbin/reboot"; static int run_cmd(const char *cmd) { char **argv; static char *envp[] = { "HOME=/", "PATH=/sbin:/bin:/usr/sbin:/usr/bin", NULL }; int ret; argv = argv_split(GFP_KERNEL, cmd, NULL); if (argv) { ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC); argv_free(argv); } else { ret = -ENOMEM; } return ret; } static int __orderly_reboot(void) { int ret; ret = run_cmd(reboot_cmd); if (ret) { pr_warn("Failed to start orderly reboot: forcing the issue\n"); emergency_sync(); kernel_restart(NULL); } return ret; } static int __orderly_poweroff(bool force) { int ret; ret = run_cmd(poweroff_cmd); if (ret && force) { pr_warn("Failed to start orderly shutdown: forcing the issue\n"); /* * I guess this should try to kick off some daemon to sync and * poweroff asap. Or not even bother syncing if we're doing an * emergency shutdown? */ emergency_sync(); kernel_power_off(); } return ret; } static bool poweroff_force; static void poweroff_work_func(struct work_struct *work) { __orderly_poweroff(poweroff_force); } static DECLARE_WORK(poweroff_work, poweroff_work_func); /** * orderly_poweroff - Trigger an orderly system poweroff * @force: force poweroff if command execution fails * * This may be called from any context to trigger a system shutdown. * If the orderly shutdown fails, it will force an immediate shutdown. */ void orderly_poweroff(bool force) { if (force) /* do not override the pending "true" */ poweroff_force = true; schedule_work(&poweroff_work); } EXPORT_SYMBOL_GPL(orderly_poweroff); static void reboot_work_func(struct work_struct *work) { __orderly_reboot(); } static DECLARE_WORK(reboot_work, reboot_work_func); /** * orderly_reboot - Trigger an orderly system reboot * * This may be called from any context to trigger a system reboot. * If the orderly reboot fails, it will force an immediate reboot. */ void orderly_reboot(void) { schedule_work(&reboot_work); } EXPORT_SYMBOL_GPL(orderly_reboot); static const char *hw_protection_action_str(enum hw_protection_action action) { switch (action) { case HWPROT_ACT_SHUTDOWN: return "shutdown"; case HWPROT_ACT_REBOOT: return "reboot"; default: return "undefined"; } } static enum hw_protection_action hw_failure_emergency_action; /** * hw_failure_emergency_action_func - emergency action work after a known delay * @work: work_struct associated with the emergency action function * * This function is called in very critical situations to force * a kernel poweroff or reboot after a configurable timeout value. */ static void hw_failure_emergency_action_func(struct work_struct *work) { const char *action_str = hw_protection_action_str(hw_failure_emergency_action); pr_emerg("Hardware protection timed-out. Trying forced %s\n", action_str); /* * We have reached here after the emergency action waiting period has * expired. This means orderly_poweroff/reboot has not been able to * shut off the system for some reason. * * Try to shut off the system immediately if possible */ if (hw_failure_emergency_action == HWPROT_ACT_REBOOT) kernel_restart(NULL); else kernel_power_off(); /* * Worst of the worst case trigger emergency restart */ pr_emerg("Hardware protection %s failed. Trying emergency restart\n", action_str); emergency_restart(); } static DECLARE_DELAYED_WORK(hw_failure_emergency_action_work, hw_failure_emergency_action_func); /** * hw_failure_emergency_schedule - Schedule an emergency system shutdown or reboot * * @action: The hardware protection action to be taken * @action_delay_ms: Time in milliseconds to elapse before triggering action * * This may be called from any critical situation to trigger a system shutdown * or reboot after a given period of time. * If time is negative this is not scheduled. */ static void hw_failure_emergency_schedule(enum hw_protection_action action, int action_delay_ms) { if (action_delay_ms <= 0) return; hw_failure_emergency_action = action; schedule_delayed_work(&hw_failure_emergency_action_work, msecs_to_jiffies(action_delay_ms)); } /** * __hw_protection_trigger - Trigger an emergency system shutdown or reboot * * @reason: Reason of emergency shutdown or reboot to be printed. * @ms_until_forced: Time to wait for orderly shutdown or reboot before * triggering it. Negative value disables the forced * shutdown or reboot. * @action: The hardware protection action to be taken. * * Initiate an emergency system shutdown or reboot in order to protect * hardware from further damage. Usage examples include a thermal protection. * NOTE: The request is ignored if protection shutdown or reboot is already * pending even if the previous request has given a large timeout for forced * shutdown/reboot. */ void __hw_protection_trigger(const char *reason, int ms_until_forced, enum hw_protection_action action) { static atomic_t allow_proceed = ATOMIC_INIT(1); if (action == HWPROT_ACT_DEFAULT) action = hw_protection_action; pr_emerg("HARDWARE PROTECTION %s (%s)\n", hw_protection_action_str(action), reason); /* Shutdown should be initiated only once. */ if (!atomic_dec_and_test(&allow_proceed)) return; /* * Queue a backup emergency shutdown in the event of * orderly_poweroff failure */ hw_failure_emergency_schedule(action, ms_until_forced); if (action == HWPROT_ACT_REBOOT) orderly_reboot(); else orderly_poweroff(true); } EXPORT_SYMBOL_GPL(__hw_protection_trigger); static bool hw_protection_action_parse(const char *str, enum hw_protection_action *action) { if (sysfs_streq(str, "shutdown")) *action = HWPROT_ACT_SHUTDOWN; else if (sysfs_streq(str, "reboot")) *action = HWPROT_ACT_REBOOT; else return false; return true; } static int __init hw_protection_setup(char *str) { hw_protection_action_parse(str, &hw_protection_action); return 1; } __setup("hw_protection=", hw_protection_setup); #ifdef CONFIG_SYSFS static ssize_t hw_protection_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { return sysfs_emit(buf, "%s\n", hw_protection_action_str(hw_protection_action)); } static ssize_t hw_protection_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (!hw_protection_action_parse(buf, &hw_protection_action)) return -EINVAL; return count; } static struct kobj_attribute hw_protection_attr = __ATTR_RW(hw_protection); #endif static int __init reboot_setup(char *str) { for (;;) { enum reboot_mode *mode; /* * Having anything passed on the command line via * reboot= will cause us to disable DMI checking * below. */ reboot_default = 0; if (!strncmp(str, "panic_", 6)) { mode = &panic_reboot_mode; str += 6; } else { mode = &reboot_mode; } switch (*str) { case 'w': *mode = REBOOT_WARM; break; case 'c': *mode = REBOOT_COLD; break; case 'h': *mode = REBOOT_HARD; break; case 's': /* * reboot_cpu is s[mp]#### with #### being the processor * to be used for rebooting. Skip 's' or 'smp' prefix. */ str += str[1] == 'm' && str[2] == 'p' ? 3 : 1; if (isdigit(str[0])) { int cpu = simple_strtoul(str, NULL, 0); if (cpu >= num_possible_cpus()) { pr_err("Ignoring the CPU number in reboot= option. " "CPU %d exceeds possible cpu number %d\n", cpu, num_possible_cpus()); break; } reboot_cpu = cpu; } else *mode = REBOOT_SOFT; break; case 'g': *mode = REBOOT_GPIO; break; case 'b': case 'a': case 'k': case 't': case 'e': case 'p': reboot_type = *str; break; case 'f': reboot_force = 1; break; } str = strchr(str, ','); if (str) str++; else break; } return 1; } __setup("reboot=", reboot_setup); #ifdef CONFIG_SYSFS #define REBOOT_COLD_STR "cold" #define REBOOT_WARM_STR "warm" #define REBOOT_HARD_STR "hard" #define REBOOT_SOFT_STR "soft" #define REBOOT_GPIO_STR "gpio" #define REBOOT_UNDEFINED_STR "undefined" #define BOOT_TRIPLE_STR "triple" #define BOOT_KBD_STR "kbd" #define BOOT_BIOS_STR "bios" #define BOOT_ACPI_STR "acpi" #define BOOT_EFI_STR "efi" #define BOOT_PCI_STR "pci" static ssize_t mode_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const char *val; switch (reboot_mode) { case REBOOT_COLD: val = REBOOT_COLD_STR; break; case REBOOT_WARM: val = REBOOT_WARM_STR; break; case REBOOT_HARD: val = REBOOT_HARD_STR; break; case REBOOT_SOFT: val = REBOOT_SOFT_STR; break; case REBOOT_GPIO: val = REBOOT_GPIO_STR; break; default: val = REBOOT_UNDEFINED_STR; } return sysfs_emit(buf, "%s\n", val); } static ssize_t mode_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { if (!capable(CAP_SYS_BOOT)) return -EPERM; if (!strncmp(buf, REBOOT_COLD_STR, strlen(REBOOT_COLD_STR))) reboot_mode = REBOOT_COLD; else if (!strncmp(buf, REBOOT_WARM_STR, strlen(REBOOT_WARM_STR))) reboot_mode = REBOOT_WARM; else if (!strncmp(buf, REBOOT_HARD_STR, strlen(REBOOT_HARD_STR))) reboot_mode = REBOOT_HARD; else if (!strncmp(buf, REBOOT_SOFT_STR, strlen(REBOOT_SOFT_STR))) reboot_mode = REBOOT_SOFT; else if (!strncmp(buf, REBOOT_GPIO_STR, strlen(REBOOT_GPIO_STR))) reboot_mode = REBOOT_GPIO; else return -EINVAL; reboot_default = 0; return count; } static struct kobj_attribute reboot_mode_attr = __ATTR_RW(mode); #ifdef CONFIG_X86 static ssize_t force_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { return sysfs_emit(buf, "%d\n", reboot_force); } static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { bool res; if (!capable(CAP_SYS_BOOT)) return -EPERM; if (kstrtobool(buf, &res)) return -EINVAL; reboot_default = 0; reboot_force = res; return count; } static struct kobj_attribute reboot_force_attr = __ATTR_RW(force); static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const char *val; switch (reboot_type) { case BOOT_TRIPLE: val = BOOT_TRIPLE_STR; break; case BOOT_KBD: val = BOOT_KBD_STR; break; case BOOT_BIOS: val = BOOT_BIOS_STR; break; case BOOT_ACPI: val = BOOT_ACPI_STR; break; case BOOT_EFI: val = BOOT_EFI_STR; break; case BOOT_CF9_FORCE: val = BOOT_PCI_STR; break; default: val = REBOOT_UNDEFINED_STR; } return sysfs_emit(buf, "%s\n", val); } static ssize_t type_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { if (!capable(CAP_SYS_BOOT)) return -EPERM; if (!strncmp(buf, BOOT_TRIPLE_STR, strlen(BOOT_TRIPLE_STR))) reboot_type = BOOT_TRIPLE; else if (!strncmp(buf, BOOT_KBD_STR, strlen(BOOT_KBD_STR))) reboot_type = BOOT_KBD; else if (!strncmp(buf, BOOT_BIOS_STR, strlen(BOOT_BIOS_STR))) reboot_type = BOOT_BIOS; else if (!strncmp(buf, BOOT_ACPI_STR, strlen(BOOT_ACPI_STR))) reboot_type = BOOT_ACPI; else if (!strncmp(buf, BOOT_EFI_STR, strlen(BOOT_EFI_STR))) reboot_type = BOOT_EFI; else if (!strncmp(buf, BOOT_PCI_STR, strlen(BOOT_PCI_STR))) reboot_type = BOOT_CF9_FORCE; else return -EINVAL; reboot_default = 0; return count; } static struct kobj_attribute reboot_type_attr = __ATTR_RW(type); #endif #ifdef CONFIG_SMP static ssize_t cpu_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { return sysfs_emit(buf, "%d\n", reboot_cpu); } static ssize_t cpu_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { unsigned int cpunum; int rc; if (!capable(CAP_SYS_BOOT)) return -EPERM; rc = kstrtouint(buf, 0, &cpunum); if (rc) return rc; if (cpunum >= num_possible_cpus()) return -ERANGE; reboot_default = 0; reboot_cpu = cpunum; return count; } static struct kobj_attribute reboot_cpu_attr = __ATTR_RW(cpu); #endif static struct attribute *reboot_attrs[] = { &hw_protection_attr.attr, &reboot_mode_attr.attr, #ifdef CONFIG_X86 &reboot_force_attr.attr, &reboot_type_attr.attr, #endif #ifdef CONFIG_SMP &reboot_cpu_attr.attr, #endif NULL, }; #ifdef CONFIG_SYSCTL static const struct ctl_table kern_reboot_table[] = { { .procname = "poweroff_cmd", .data = &poweroff_cmd, .maxlen = POWEROFF_CMD_PATH_LEN, .mode = 0644, .proc_handler = proc_dostring, }, { .procname = "ctrl-alt-del", .data = &C_A_D, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, }; static void __init kernel_reboot_sysctls_init(void) { register_sysctl_init("kernel", kern_reboot_table); } #else #define kernel_reboot_sysctls_init() do { } while (0) #endif /* CONFIG_SYSCTL */ static const struct attribute_group reboot_attr_group = { .attrs = reboot_attrs, }; static int __init reboot_ksysfs_init(void) { struct kobject *reboot_kobj; int ret; reboot_kobj = kobject_create_and_add("reboot", kernel_kobj); if (!reboot_kobj) return -ENOMEM; ret = sysfs_create_group(reboot_kobj, &reboot_attr_group); if (ret) { kobject_put(reboot_kobj); return ret; } kernel_reboot_sysctls_init(); return 0; } late_initcall(reboot_ksysfs_init); #endif |
| 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 | // SPDX-License-Identifier: GPL-2.0-only /* * Marvell NFC driver: Firmware downloader * * Copyright (C) 2015, Marvell International Ltd. */ #include <linux/module.h> #include <linux/unaligned.h> #include <linux/firmware.h> #include <linux/nfc.h> #include <net/nfc/nci.h> #include <net/nfc/nci_core.h> #include "nfcmrvl.h" #define FW_DNLD_TIMEOUT 15000 #define NCI_OP_PROPRIETARY_BOOT_CMD nci_opcode_pack(NCI_GID_PROPRIETARY, \ NCI_OP_PROP_BOOT_CMD) /* FW download states */ enum { STATE_RESET = 0, STATE_INIT, STATE_SET_REF_CLOCK, STATE_SET_HI_CONFIG, STATE_OPEN_LC, STATE_FW_DNLD, STATE_CLOSE_LC, STATE_BOOT }; enum { SUBSTATE_WAIT_COMMAND = 0, SUBSTATE_WAIT_ACK_CREDIT, SUBSTATE_WAIT_NACK_CREDIT, SUBSTATE_WAIT_DATA_CREDIT, }; /* * Patterns for responses */ static const uint8_t nci_pattern_core_reset_ntf[] = { 0x60, 0x00, 0x02, 0xA0, 0x01 }; static const uint8_t nci_pattern_core_init_rsp[] = { 0x40, 0x01, 0x11 }; static const uint8_t nci_pattern_core_set_config_rsp[] = { 0x40, 0x02, 0x02, 0x00, 0x00 }; static const uint8_t nci_pattern_core_conn_create_rsp[] = { 0x40, 0x04, 0x04, 0x00 }; static const uint8_t nci_pattern_core_conn_close_rsp[] = { 0x40, 0x05, 0x01, 0x00 }; static const uint8_t nci_pattern_core_conn_credits_ntf[] = { 0x60, 0x06, 0x03, 0x01, NCI_CORE_LC_CONNID_PROP_FW_DL, 0x01 }; static const uint8_t nci_pattern_proprietary_boot_rsp[] = { 0x4F, 0x3A, 0x01, 0x00 }; static struct sk_buff *alloc_lc_skb(struct nfcmrvl_private *priv, uint8_t plen) { struct sk_buff *skb; struct nci_data_hdr *hdr; skb = nci_skb_alloc(priv->ndev, (NCI_DATA_HDR_SIZE + plen), GFP_KERNEL); if (!skb) return NULL; hdr = skb_put(skb, NCI_DATA_HDR_SIZE); hdr->conn_id = NCI_CORE_LC_CONNID_PROP_FW_DL; hdr->rfu = 0; hdr->plen = plen; nci_mt_set((__u8 *)hdr, NCI_MT_DATA_PKT); nci_pbf_set((__u8 *)hdr, NCI_PBF_LAST); return skb; } static void fw_dnld_over(struct nfcmrvl_private *priv, u32 error) { if (priv->fw_dnld.fw) { release_firmware(priv->fw_dnld.fw); priv->fw_dnld.fw = NULL; priv->fw_dnld.header = NULL; priv->fw_dnld.binary_config = NULL; } atomic_set(&priv->ndev->cmd_cnt, 0); if (timer_pending(&priv->ndev->cmd_timer)) timer_delete_sync(&priv->ndev->cmd_timer); if (timer_pending(&priv->fw_dnld.timer)) timer_delete_sync(&priv->fw_dnld.timer); nfc_info(priv->dev, "FW loading over (%d)]\n", error); if (error != 0) { /* failed, halt the chip to avoid power consumption */ nfcmrvl_chip_halt(priv); } nfc_fw_download_done(priv->ndev->nfc_dev, priv->fw_dnld.name, error); } static void fw_dnld_timeout(struct timer_list *t) { struct nfcmrvl_private *priv = timer_container_of(priv, t, fw_dnld.timer); nfc_err(priv->dev, "FW loading timeout"); priv->fw_dnld.state = STATE_RESET; fw_dnld_over(priv, -ETIMEDOUT); } static int process_state_reset(struct nfcmrvl_private *priv, const struct sk_buff *skb) { if (sizeof(nci_pattern_core_reset_ntf) != skb->len || memcmp(skb->data, nci_pattern_core_reset_ntf, sizeof(nci_pattern_core_reset_ntf))) return -EINVAL; nfc_info(priv->dev, "BootROM reset, start fw download\n"); /* Start FW download state machine */ priv->fw_dnld.state = STATE_INIT; nci_send_cmd(priv->ndev, NCI_OP_CORE_INIT_CMD, 0, NULL); return 0; } static int process_state_init(struct nfcmrvl_private *priv, const struct sk_buff *skb) { struct nci_core_set_config_cmd cmd; if (sizeof(nci_pattern_core_init_rsp) >= skb->len || memcmp(skb->data, nci_pattern_core_init_rsp, sizeof(nci_pattern_core_init_rsp))) return -EINVAL; cmd.num_params = 1; cmd.param.id = NFCMRVL_PROP_REF_CLOCK; cmd.param.len = 4; memcpy(cmd.param.val, &priv->fw_dnld.header->ref_clock, 4); nci_send_cmd(priv->ndev, NCI_OP_CORE_SET_CONFIG_CMD, 3 + cmd.param.len, &cmd); priv->fw_dnld.state = STATE_SET_REF_CLOCK; return 0; } static void create_lc(struct nfcmrvl_private *priv) { uint8_t param[2] = { NCI_CORE_LC_PROP_FW_DL, 0x0 }; priv->fw_dnld.state = STATE_OPEN_LC; nci_send_cmd(priv->ndev, NCI_OP_CORE_CONN_CREATE_CMD, 2, param); } static int process_state_set_ref_clock(struct nfcmrvl_private *priv, const struct sk_buff *skb) { struct nci_core_set_config_cmd cmd; if (sizeof(nci_pattern_core_set_config_rsp) != skb->len || memcmp(skb->data, nci_pattern_core_set_config_rsp, skb->len)) return -EINVAL; cmd.num_params = 1; cmd.param.id = NFCMRVL_PROP_SET_HI_CONFIG; switch (priv->phy) { case NFCMRVL_PHY_UART: cmd.param.len = 5; memcpy(cmd.param.val, &priv->fw_dnld.binary_config->uart.baudrate, 4); cmd.param.val[4] = priv->fw_dnld.binary_config->uart.flow_control; break; case NFCMRVL_PHY_I2C: cmd.param.len = 5; memcpy(cmd.param.val, &priv->fw_dnld.binary_config->i2c.clk, 4); cmd.param.val[4] = 0; break; case NFCMRVL_PHY_SPI: cmd.param.len = 5; memcpy(cmd.param.val, &priv->fw_dnld.binary_config->spi.clk, 4); cmd.param.val[4] = 0; break; default: create_lc(priv); return 0; } priv->fw_dnld.state = STATE_SET_HI_CONFIG; nci_send_cmd(priv->ndev, NCI_OP_CORE_SET_CONFIG_CMD, 3 + cmd.param.len, &cmd); return 0; } static int process_state_set_hi_config(struct nfcmrvl_private *priv, const struct sk_buff *skb) { if (sizeof(nci_pattern_core_set_config_rsp) != skb->len || memcmp(skb->data, nci_pattern_core_set_config_rsp, skb->len)) return -EINVAL; create_lc(priv); return 0; } static int process_state_open_lc(struct nfcmrvl_private *priv, const struct sk_buff *skb) { if (sizeof(nci_pattern_core_conn_create_rsp) >= skb->len || memcmp(skb->data, nci_pattern_core_conn_create_rsp, sizeof(nci_pattern_core_conn_create_rsp))) return -EINVAL; priv->fw_dnld.state = STATE_FW_DNLD; priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND; priv->fw_dnld.offset = priv->fw_dnld.binary_config->offset; return 0; } static int process_state_fw_dnld(struct nfcmrvl_private *priv, struct sk_buff *skb) { uint16_t len; uint16_t comp_len; struct sk_buff *out_skb; switch (priv->fw_dnld.substate) { case SUBSTATE_WAIT_COMMAND: /* * Command format: * B0..2: NCI header * B3 : Helper command (0xA5) * B4..5: le16 data size * B6..7: le16 data size complement (~) * B8..N: payload */ /* Remove NCI HDR */ skb_pull(skb, 3); if (skb->data[0] != HELPER_CMD_PACKET_FORMAT || skb->len != 5) { nfc_err(priv->dev, "bad command"); return -EINVAL; } skb_pull(skb, 1); len = get_unaligned_le16(skb->data); skb_pull(skb, 2); comp_len = get_unaligned_le16(skb->data); memcpy(&comp_len, skb->data, 2); skb_pull(skb, 2); if (((~len) & 0xFFFF) != comp_len) { nfc_err(priv->dev, "bad len complement: %x %x %x", len, comp_len, (~len & 0xFFFF)); out_skb = alloc_lc_skb(priv, 1); if (!out_skb) return -ENOMEM; skb_put_u8(out_skb, 0xBF); nci_send_frame(priv->ndev, out_skb); priv->fw_dnld.substate = SUBSTATE_WAIT_NACK_CREDIT; return 0; } priv->fw_dnld.chunk_len = len; out_skb = alloc_lc_skb(priv, 1); if (!out_skb) return -ENOMEM; skb_put_u8(out_skb, HELPER_ACK_PACKET_FORMAT); nci_send_frame(priv->ndev, out_skb); priv->fw_dnld.substate = SUBSTATE_WAIT_ACK_CREDIT; break; case SUBSTATE_WAIT_ACK_CREDIT: if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len || memcmp(nci_pattern_core_conn_credits_ntf, skb->data, skb->len)) { nfc_err(priv->dev, "bad packet: waiting for credit"); return -EINVAL; } if (priv->fw_dnld.chunk_len == 0) { /* FW Loading is done */ uint8_t conn_id = NCI_CORE_LC_CONNID_PROP_FW_DL; priv->fw_dnld.state = STATE_CLOSE_LC; nci_send_cmd(priv->ndev, NCI_OP_CORE_CONN_CLOSE_CMD, 1, &conn_id); } else { out_skb = alloc_lc_skb(priv, priv->fw_dnld.chunk_len); if (!out_skb) return -ENOMEM; skb_put_data(out_skb, ((uint8_t *)priv->fw_dnld.fw->data) + priv->fw_dnld.offset, priv->fw_dnld.chunk_len); nci_send_frame(priv->ndev, out_skb); priv->fw_dnld.substate = SUBSTATE_WAIT_DATA_CREDIT; } break; case SUBSTATE_WAIT_DATA_CREDIT: if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len || memcmp(nci_pattern_core_conn_credits_ntf, skb->data, skb->len)) { nfc_err(priv->dev, "bad packet: waiting for credit"); return -EINVAL; } priv->fw_dnld.offset += priv->fw_dnld.chunk_len; priv->fw_dnld.chunk_len = 0; priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND; break; case SUBSTATE_WAIT_NACK_CREDIT: if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len || memcmp(nci_pattern_core_conn_credits_ntf, skb->data, skb->len)) { nfc_err(priv->dev, "bad packet: waiting for credit"); return -EINVAL; } priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND; break; } return 0; } static int process_state_close_lc(struct nfcmrvl_private *priv, const struct sk_buff *skb) { if (sizeof(nci_pattern_core_conn_close_rsp) != skb->len || memcmp(skb->data, nci_pattern_core_conn_close_rsp, skb->len)) return -EINVAL; priv->fw_dnld.state = STATE_BOOT; nci_send_cmd(priv->ndev, NCI_OP_PROPRIETARY_BOOT_CMD, 0, NULL); return 0; } static int process_state_boot(struct nfcmrvl_private *priv, const struct sk_buff *skb) { if (sizeof(nci_pattern_proprietary_boot_rsp) != skb->len || memcmp(skb->data, nci_pattern_proprietary_boot_rsp, skb->len)) return -EINVAL; /* * Update HI config to use the right configuration for the next * data exchanges. */ priv->if_ops->nci_update_config(priv, &priv->fw_dnld.binary_config->config); if (priv->fw_dnld.binary_config == &priv->fw_dnld.header->helper) { /* * This is the case where an helper was needed and we have * uploaded it. Now we have to wait the next RESET NTF to start * FW download. */ priv->fw_dnld.state = STATE_RESET; priv->fw_dnld.binary_config = &priv->fw_dnld.header->firmware; nfc_info(priv->dev, "FW loading: helper loaded"); } else { nfc_info(priv->dev, "FW loading: firmware loaded"); fw_dnld_over(priv, 0); } return 0; } static void fw_dnld_rx_work(struct work_struct *work) { int ret; struct sk_buff *skb; struct nfcmrvl_fw_dnld *fw_dnld = container_of(work, struct nfcmrvl_fw_dnld, rx_work); struct nfcmrvl_private *priv = container_of(fw_dnld, struct nfcmrvl_private, fw_dnld); while ((skb = skb_dequeue(&fw_dnld->rx_q))) { nfc_send_to_raw_sock(priv->ndev->nfc_dev, skb, RAW_PAYLOAD_NCI, NFC_DIRECTION_RX); switch (fw_dnld->state) { case STATE_RESET: ret = process_state_reset(priv, skb); break; case STATE_INIT: ret = process_state_init(priv, skb); break; case STATE_SET_REF_CLOCK: ret = process_state_set_ref_clock(priv, skb); break; case STATE_SET_HI_CONFIG: ret = process_state_set_hi_config(priv, skb); break; case STATE_OPEN_LC: ret = process_state_open_lc(priv, skb); break; case STATE_FW_DNLD: ret = process_state_fw_dnld(priv, skb); break; case STATE_CLOSE_LC: ret = process_state_close_lc(priv, skb); break; case STATE_BOOT: ret = process_state_boot(priv, skb); break; default: ret = -EFAULT; } kfree_skb(skb); if (ret != 0) { nfc_err(priv->dev, "FW loading error"); fw_dnld_over(priv, ret); break; } } } int nfcmrvl_fw_dnld_init(struct nfcmrvl_private *priv) { char name[32]; INIT_WORK(&priv->fw_dnld.rx_work, fw_dnld_rx_work); snprintf(name, sizeof(name), "%s_nfcmrvl_fw_dnld_rx_wq", dev_name(&priv->ndev->nfc_dev->dev)); priv->fw_dnld.rx_wq = create_singlethread_workqueue(name); if (!priv->fw_dnld.rx_wq) return -ENOMEM; skb_queue_head_init(&priv->fw_dnld.rx_q); return 0; } void nfcmrvl_fw_dnld_deinit(struct nfcmrvl_private *priv) { destroy_workqueue(priv->fw_dnld.rx_wq); } void nfcmrvl_fw_dnld_recv_frame(struct nfcmrvl_private *priv, struct sk_buff *skb) { /* Discard command timer */ if (timer_pending(&priv->ndev->cmd_timer)) timer_delete_sync(&priv->ndev->cmd_timer); /* Allow next command */ atomic_set(&priv->ndev->cmd_cnt, 1); /* Queue and trigger rx work */ skb_queue_tail(&priv->fw_dnld.rx_q, skb); queue_work(priv->fw_dnld.rx_wq, &priv->fw_dnld.rx_work); } void nfcmrvl_fw_dnld_abort(struct nfcmrvl_private *priv) { fw_dnld_over(priv, -EHOSTDOWN); } int nfcmrvl_fw_dnld_start(struct nci_dev *ndev, const char *firmware_name) { struct nfcmrvl_private *priv = nci_get_drvdata(ndev); struct nfcmrvl_fw_dnld *fw_dnld = &priv->fw_dnld; int res; if (!priv->support_fw_dnld) return -ENOTSUPP; if (!firmware_name || !firmware_name[0]) return -EINVAL; strcpy(fw_dnld->name, firmware_name); /* * Retrieve FW binary file and parse it to initialize FW download * state machine. */ /* Retrieve FW binary */ res = request_firmware(&fw_dnld->fw, firmware_name, &ndev->nfc_dev->dev); if (res < 0) { nfc_err(priv->dev, "failed to retrieve FW %s", firmware_name); return -ENOENT; } fw_dnld->header = (const struct nfcmrvl_fw *) priv->fw_dnld.fw->data; if (fw_dnld->header->magic != NFCMRVL_FW_MAGIC || fw_dnld->header->phy != priv->phy) { nfc_err(priv->dev, "bad firmware binary %s magic=0x%x phy=%d", firmware_name, fw_dnld->header->magic, fw_dnld->header->phy); release_firmware(fw_dnld->fw); fw_dnld->header = NULL; return -EINVAL; } if (fw_dnld->header->helper.offset != 0) { nfc_info(priv->dev, "loading helper"); fw_dnld->binary_config = &fw_dnld->header->helper; } else { nfc_info(priv->dev, "loading firmware"); fw_dnld->binary_config = &fw_dnld->header->firmware; } /* Configure a timer for timeout */ timer_setup(&priv->fw_dnld.timer, fw_dnld_timeout, 0); mod_timer(&priv->fw_dnld.timer, jiffies + msecs_to_jiffies(FW_DNLD_TIMEOUT)); /* Ronfigure HI to be sure that it is the bootrom values */ priv->if_ops->nci_update_config(priv, &fw_dnld->header->bootrom.config); /* Allow first command */ atomic_set(&priv->ndev->cmd_cnt, 1); /* First, reset the chip */ priv->fw_dnld.state = STATE_RESET; nfcmrvl_chip_reset(priv); /* Now wait for CORE_RESET_NTF or timeout */ return 0; } |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_GPIO_DRIVER_H #define __LINUX_GPIO_DRIVER_H #include <linux/bits.h> #include <linux/cleanup.h> #include <linux/err.h> #include <linux/irqchip/chained_irq.h> #include <linux/irqdomain.h> #include <linux/irqhandler.h> #include <linux/lockdep.h> #include <linux/pinctrl/pinconf-generic.h> #include <linux/pinctrl/pinctrl.h> #include <linux/property.h> #include <linux/spinlock_types.h> #include <linux/types.h> #include <linux/util_macros.h> #ifdef CONFIG_GENERIC_MSI_IRQ #include <asm/msi.h> #endif struct device; struct irq_chip; struct irq_data; struct module; struct of_phandle_args; struct pinctrl_dev; struct seq_file; struct gpio_chip; struct gpio_desc; struct gpio_device; enum gpio_lookup_flags; enum gpiod_flags; union gpio_irq_fwspec { struct irq_fwspec fwspec; #ifdef CONFIG_GENERIC_MSI_IRQ msi_alloc_info_t msiinfo; #endif }; #define GPIO_LINE_DIRECTION_IN 1 #define GPIO_LINE_DIRECTION_OUT 0 /** * struct gpio_irq_chip - GPIO interrupt controller */ struct gpio_irq_chip { /** * @chip: * * GPIO IRQ chip implementation, provided by GPIO driver. */ struct irq_chip *chip; /** * @domain: * * Interrupt translation domain; responsible for mapping between GPIO * hwirq number and Linux IRQ number. */ struct irq_domain *domain; #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY /** * @fwnode: * * Firmware node corresponding to this gpiochip/irqchip, necessary * for hierarchical irqdomain support. */ struct fwnode_handle *fwnode; /** * @parent_domain: * * If non-NULL, will be set as the parent of this GPIO interrupt * controller's IRQ domain to establish a hierarchical interrupt * domain. The presence of this will activate the hierarchical * interrupt support. */ struct irq_domain *parent_domain; /** * @child_to_parent_hwirq: * * This callback translates a child hardware IRQ offset to a parent * hardware IRQ offset on a hierarchical interrupt chip. The child * hardware IRQs correspond to the GPIO index 0..ngpio-1 (see the * ngpio field of struct gpio_chip) and the corresponding parent * hardware IRQ and type (such as IRQ_TYPE_*) shall be returned by * the driver. The driver can calculate this from an offset or using * a lookup table or whatever method is best for this chip. Return * 0 on successful translation in the driver. * * If some ranges of hardware IRQs do not have a corresponding parent * HWIRQ, return -EINVAL, but also make sure to fill in @valid_mask and * @need_valid_mask to make these GPIO lines unavailable for * translation. */ int (*child_to_parent_hwirq)(struct gpio_chip *gc, unsigned int child_hwirq, unsigned int child_type, unsigned int *parent_hwirq, unsigned int *parent_type); /** * @populate_parent_alloc_arg : * * This optional callback allocates and populates the specific struct * for the parent's IRQ domain. If this is not specified, then * &gpiochip_populate_parent_fwspec_twocell will be used. A four-cell * variant named &gpiochip_populate_parent_fwspec_fourcell is also * available. */ int (*populate_parent_alloc_arg)(struct gpio_chip *gc, union gpio_irq_fwspec *fwspec, unsigned int parent_hwirq, unsigned int parent_type); /** * @child_offset_to_irq: * * This optional callback is used to translate the child's GPIO line * offset on the GPIO chip to an IRQ number for the GPIO to_irq() * callback. If this is not specified, then a default callback will be * provided that returns the line offset. */ unsigned int (*child_offset_to_irq)(struct gpio_chip *gc, unsigned int pin); /** * @child_irq_domain_ops: * * The IRQ domain operations that will be used for this GPIO IRQ * chip. If no operations are provided, then default callbacks will * be populated to setup the IRQ hierarchy. Some drivers need to * supply their own translate function. */ struct irq_domain_ops child_irq_domain_ops; #endif /** * @handler: * * The IRQ handler to use (often a predefined IRQ core function) for * GPIO IRQs, provided by GPIO driver. */ irq_flow_handler_t handler; /** * @default_type: * * Default IRQ triggering type applied during GPIO driver * initialization, provided by GPIO driver. */ unsigned int default_type; /** * @lock_key: * * Per GPIO IRQ chip lockdep class for IRQ lock. */ struct lock_class_key *lock_key; /** * @request_key: * * Per GPIO IRQ chip lockdep class for IRQ request. */ struct lock_class_key *request_key; /** * @parent_handler: * * The interrupt handler for the GPIO chip's parent interrupts, may be * NULL if the parent interrupts are nested rather than cascaded. */ irq_flow_handler_t parent_handler; union { /** * @parent_handler_data: * * If @per_parent_data is false, @parent_handler_data is a * single pointer used as the data associated with every * parent interrupt. */ void *parent_handler_data; /** * @parent_handler_data_array: * * If @per_parent_data is true, @parent_handler_data_array is * an array of @num_parents pointers, and is used to associate * different data for each parent. This cannot be NULL if * @per_parent_data is true. */ void **parent_handler_data_array; }; /** * @num_parents: * * The number of interrupt parents of a GPIO chip. */ unsigned int num_parents; /** * @parents: * * A list of interrupt parents of a GPIO chip. This is owned by the * driver, so the core will only reference this list, not modify it. */ unsigned int *parents; /** * @map: * * A list of interrupt parents for each line of a GPIO chip. */ unsigned int *map; /** * @threaded: * * True if set the interrupt handling uses nested threads. */ bool threaded; /** * @per_parent_data: * * True if parent_handler_data_array describes a @num_parents * sized array to be used as parent data. */ bool per_parent_data; /** * @initialized: * * Flag to track GPIO chip irq member's initialization. * This flag will make sure GPIO chip irq members are not used * before they are initialized. */ bool initialized; /** * @domain_is_allocated_externally: * * True it the irq_domain was allocated outside of gpiolib, in which * case gpiolib won't free the irq_domain itself. */ bool domain_is_allocated_externally; /** * @init_hw: optional routine to initialize hardware before * an IRQ chip will be added. This is quite useful when * a particular driver wants to clear IRQ related registers * in order to avoid undesired events. */ int (*init_hw)(struct gpio_chip *gc); /** * @init_valid_mask: optional routine to initialize @valid_mask, to be * used if not all GPIO lines are valid interrupts. Sometimes some * lines just cannot fire interrupts, and this routine, when defined, * is passed a bitmap in "valid_mask" and it will have ngpios * bits from 0..(ngpios-1) set to "1" as in valid. The callback can * then directly set some bits to "0" if they cannot be used for * interrupts. */ void (*init_valid_mask)(struct gpio_chip *gc, unsigned long *valid_mask, unsigned int ngpios); /** * @valid_mask: * * If not %NULL, holds bitmask of GPIOs which are valid to be included * in IRQ domain of the chip. */ unsigned long *valid_mask; /** * @first: * * Required for static IRQ allocation. If set, * irq_domain_create_simple() will allocate and map all IRQs * during initialization. */ unsigned int first; /** * @irq_enable: * * Store old irq_chip irq_enable callback */ void (*irq_enable)(struct irq_data *data); /** * @irq_disable: * * Store old irq_chip irq_disable callback */ void (*irq_disable)(struct irq_data *data); /** * @irq_unmask: * * Store old irq_chip irq_unmask callback */ void (*irq_unmask)(struct irq_data *data); /** * @irq_mask: * * Store old irq_chip irq_mask callback */ void (*irq_mask)(struct irq_data *data); }; /** * struct gpio_chip - abstract a GPIO controller * @label: a functional name for the GPIO device, such as a part * number or the name of the SoC IP-block implementing it. * @gpiodev: the internal state holder, opaque struct * @parent: optional parent device providing the GPIOs * @fwnode: optional fwnode providing this controller's properties * @owner: helps prevent removal of modules exporting active GPIOs * @request: optional hook for chip-specific activation, such as * enabling module power and clock; may sleep; must return 0 on success * or negative error number on failure * @free: optional hook for chip-specific deactivation, such as * disabling module power and clock; may sleep * @get_direction: returns direction for signal "offset", 0=out, 1=in, * (same as GPIO_LINE_DIRECTION_OUT / GPIO_LINE_DIRECTION_IN), * or negative error. It is recommended to always implement this * function, even on input-only or output-only gpio chips. * @direction_input: configures signal "offset" as input, returns 0 on success * or a negative error number. This can be omitted on input-only or * output-only gpio chips. * @direction_output: configures signal "offset" as output, returns 0 on * success or a negative error number. This can be omitted on input-only * or output-only gpio chips. * @get: returns value for signal "offset", 0=low, 1=high, or negative error * @get_multiple: reads values for multiple signals defined by "mask" and * stores them in "bits", returns 0 on success or negative error * @set: assigns output value for signal "offset", returns 0 on success or * negative error value * @set_multiple: assigns output values for multiple signals defined by * "mask", returns 0 on success or negative error value * @set_config: optional hook for all kinds of settings. Uses the same * packed config format as generic pinconf. Must return 0 on success and * a negative error number on failure. * @to_irq: optional hook supporting non-static gpiod_to_irq() mappings; * implementation may not sleep * @dbg_show: optional routine to show contents in debugfs; default code * will be used when this is omitted, but custom code can show extra * state (such as pullup/pulldown configuration). * @init_valid_mask: optional routine to initialize @valid_mask, to be used if * not all GPIOs are valid. * @add_pin_ranges: optional routine to initialize pin ranges, to be used when * requires special mapping of the pins that provides GPIO functionality. * It is called after adding GPIO chip and before adding IRQ chip. * @en_hw_timestamp: Dependent on GPIO chip, an optional routine to * enable hardware timestamp. * @dis_hw_timestamp: Dependent on GPIO chip, an optional routine to * disable hardware timestamp. * @base: identifies the first GPIO number handled by this chip; * or, if negative during registration, requests dynamic ID allocation. * DEPRECATION: providing anything non-negative and nailing the base * offset of GPIO chips is deprecated. Please pass -1 as base to * let gpiolib select the chip base in all possible cases. We want to * get rid of the static GPIO number space in the long run. * @ngpio: the number of GPIOs handled by this controller; the last GPIO * handled is (base + ngpio - 1). * @offset: when multiple gpio chips belong to the same device this * can be used as offset within the device so friendly names can * be properly assigned. * @names: if set, must be an array of strings to use as alternative * names for the GPIOs in this chip. Any entry in the array * may be NULL if there is no alias for the GPIO, however the * array must be @ngpio entries long. * @can_sleep: flag must be set iff get()/set() methods sleep, as they * must while accessing GPIO expander chips over I2C or SPI. This * implies that if the chip supports IRQs, these IRQs need to be threaded * as the chip access may sleep when e.g. reading out the IRQ status * registers. * * A gpio_chip can help platforms abstract various sources of GPIOs so * they can all be accessed through a common programming interface. * Example sources would be SOC controllers, FPGAs, multifunction * chips, dedicated GPIO expanders, and so on. * * Each chip controls a number of signals, identified in method calls * by "offset" values in the range 0..(@ngpio - 1). When those signals * are referenced through calls like gpio_get_value(gpio), the offset * is calculated by subtracting @base from the gpio number. */ struct gpio_chip { const char *label; struct gpio_device *gpiodev; struct device *parent; struct fwnode_handle *fwnode; struct module *owner; int (*request)(struct gpio_chip *gc, unsigned int offset); void (*free)(struct gpio_chip *gc, unsigned int offset); int (*get_direction)(struct gpio_chip *gc, unsigned int offset); int (*direction_input)(struct gpio_chip *gc, unsigned int offset); int (*direction_output)(struct gpio_chip *gc, unsigned int offset, int value); int (*get)(struct gpio_chip *gc, unsigned int offset); int (*get_multiple)(struct gpio_chip *gc, unsigned long *mask, unsigned long *bits); int (*set)(struct gpio_chip *gc, unsigned int offset, int value); int (*set_multiple)(struct gpio_chip *gc, unsigned long *mask, unsigned long *bits); int (*set_config)(struct gpio_chip *gc, unsigned int offset, unsigned long config); int (*to_irq)(struct gpio_chip *gc, unsigned int offset); void (*dbg_show)(struct seq_file *s, struct gpio_chip *gc); int (*init_valid_mask)(struct gpio_chip *gc, unsigned long *valid_mask, unsigned int ngpios); int (*add_pin_ranges)(struct gpio_chip *gc); int (*en_hw_timestamp)(struct gpio_chip *gc, u32 offset, unsigned long flags); int (*dis_hw_timestamp)(struct gpio_chip *gc, u32 offset, unsigned long flags); int base; u16 ngpio; u16 offset; const char *const *names; bool can_sleep; #ifdef CONFIG_GPIOLIB_IRQCHIP /* * With CONFIG_GPIOLIB_IRQCHIP we get an irqchip inside the gpiolib * to handle IRQs for most practical cases. */ /** * @irq: * * Integrates interrupt chip functionality with the GPIO chip. Can be * used to handle IRQs for most practical cases. */ struct gpio_irq_chip irq; #endif /* CONFIG_GPIOLIB_IRQCHIP */ #if defined(CONFIG_OF_GPIO) /* * If CONFIG_OF_GPIO is enabled, then all GPIO controllers described in * the device tree automatically may have an OF translation */ /** * @of_gpio_n_cells: * * Number of cells used to form the GPIO specifier. The standard is 2 * cells: * * gpios = <&gpio offset flags>; * * some complex GPIO controllers instantiate more than one chip per * device tree node and have 3 cells: * * gpios = <&gpio instance offset flags>; * * Legacy GPIO controllers may even have 1 cell: * * gpios = <&gpio offset>; */ unsigned int of_gpio_n_cells; /** * @of_node_instance_match: * * Determine if a chip is the right instance. Must be implemented by * any driver using more than one gpio_chip per device tree node. * Returns true if gc is the instance indicated by i (which is the * first cell in the phandles for GPIO lines and gpio-ranges). */ bool (*of_node_instance_match)(struct gpio_chip *gc, unsigned int i); /** * @of_xlate: * * Callback to translate a device tree GPIO specifier into a chip- * relative GPIO number and flags. */ int (*of_xlate)(struct gpio_chip *gc, const struct of_phandle_args *gpiospec, u32 *flags); #endif /* CONFIG_OF_GPIO */ }; char *gpiochip_dup_line_label(struct gpio_chip *gc, unsigned int offset); struct _gpiochip_for_each_data { const char **label; unsigned int *i; }; DEFINE_CLASS(_gpiochip_for_each_data, struct _gpiochip_for_each_data, if (*_T.label) kfree(*_T.label), ({ struct _gpiochip_for_each_data _data = { label, i }; *_data.i = 0; _data; }), const char **label, int *i) /** * for_each_hwgpio_in_range - Iterates over all GPIOs in a given range * @_chip: Chip to iterate over. * @_i: Loop counter. * @_base: First GPIO in the ranger. * @_size: Amount of GPIOs to check starting from @base. * @_label: Place to store the address of the label if the GPIO is requested. * Set to NULL for unused GPIOs. */ #define for_each_hwgpio_in_range(_chip, _i, _base, _size, _label) \ for (CLASS(_gpiochip_for_each_data, _data)(&_label, &_i); \ _i < _size; \ _i++, kfree(_label), _label = NULL) \ for_each_if(!IS_ERR(_label = gpiochip_dup_line_label(_chip, _base + _i))) /** * for_each_hwgpio - Iterates over all GPIOs for given chip. * @_chip: Chip to iterate over. * @_i: Loop counter. * @_label: Place to store the address of the label if the GPIO is requested. * Set to NULL for unused GPIOs. */ #define for_each_hwgpio(_chip, _i, _label) \ for_each_hwgpio_in_range(_chip, _i, 0, _chip->ngpio, _label) /** * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range * @_chip: the chip to query * @_i: loop variable * @_base: first GPIO in the range * @_size: amount of GPIOs to check starting from @base * @_label: label of current GPIO */ #define for_each_requested_gpio_in_range(_chip, _i, _base, _size, _label) \ for_each_hwgpio_in_range(_chip, _i, _base, _size, _label) \ for_each_if(_label) /* Iterates over all requested GPIO of the given @chip */ #define for_each_requested_gpio(chip, i, label) \ for_each_requested_gpio_in_range(chip, i, 0, chip->ngpio, label) /* add/remove chips */ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, struct lock_class_key *lock_key, struct lock_class_key *request_key); /** * gpiochip_add_data() - register a gpio_chip * @gc: the chip to register, with gc->base initialized * @data: driver-private data associated with this chip * * Context: potentially before irqs will work * * When gpiochip_add_data() is called very early during boot, so that GPIOs * can be freely used, the gc->parent device must be registered before * the gpio framework's arch_initcall(). Otherwise sysfs initialization * for GPIOs will fail rudely. * * gpiochip_add_data() must only be called after gpiolib initialization, * i.e. after core_initcall(). * * If gc->base is negative, this requests dynamic assignment of * a range of valid GPIOs. * * Returns: * A negative errno if the chip can't be registered, such as because the * gc->base is invalid or already associated with a different chip. * Otherwise it returns zero as a success code. */ #ifdef CONFIG_LOCKDEP #define gpiochip_add_data(gc, data) ({ \ static struct lock_class_key lock_key; \ static struct lock_class_key request_key; \ gpiochip_add_data_with_key(gc, data, &lock_key, \ &request_key); \ }) #define devm_gpiochip_add_data(dev, gc, data) ({ \ static struct lock_class_key lock_key; \ static struct lock_class_key request_key; \ devm_gpiochip_add_data_with_key(dev, gc, data, &lock_key, \ &request_key); \ }) #else #define gpiochip_add_data(gc, data) gpiochip_add_data_with_key(gc, data, NULL, NULL) #define devm_gpiochip_add_data(dev, gc, data) \ devm_gpiochip_add_data_with_key(dev, gc, data, NULL, NULL) #endif /* CONFIG_LOCKDEP */ void gpiochip_remove(struct gpio_chip *gc); int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip *gc, void *data, struct lock_class_key *lock_key, struct lock_class_key *request_key); struct gpio_device *gpio_device_find(const void *data, int (*match)(struct gpio_chip *gc, const void *data)); struct gpio_device *gpio_device_get(struct gpio_device *gdev); void gpio_device_put(struct gpio_device *gdev); DEFINE_FREE(gpio_device_put, struct gpio_device *, if (!IS_ERR_OR_NULL(_T)) gpio_device_put(_T)) struct device *gpio_device_to_device(struct gpio_device *gdev); bool gpiochip_line_is_irq(struct gpio_chip *gc, unsigned int offset); int gpiochip_reqres_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_disable_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_enable_irq(struct gpio_chip *gc, unsigned int offset); /* irq_data versions of the above */ int gpiochip_irq_reqres(struct irq_data *data); void gpiochip_irq_relres(struct irq_data *data); /* Paste this in your irq_chip structure */ #define GPIOCHIP_IRQ_RESOURCE_HELPERS \ .irq_request_resources = gpiochip_irq_reqres, \ .irq_release_resources = gpiochip_irq_relres static inline void gpio_irq_chip_set_chip(struct gpio_irq_chip *girq, const struct irq_chip *chip) { /* Yes, dropping const is ugly, but it isn't like we have a choice */ girq->chip = (struct irq_chip *)chip; } /* Line status inquiry for drivers */ bool gpiochip_line_is_open_drain(struct gpio_chip *gc, unsigned int offset); bool gpiochip_line_is_open_source(struct gpio_chip *gc, unsigned int offset); /* Sleep persistence inquiry for drivers */ bool gpiochip_line_is_persistent(struct gpio_chip *gc, unsigned int offset); bool gpiochip_line_is_valid(const struct gpio_chip *gc, unsigned int offset); const unsigned long *gpiochip_query_valid_mask(const struct gpio_chip *gc); /* get driver data */ void *gpiochip_get_data(struct gpio_chip *gc); #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY int gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *gc, union gpio_irq_fwspec *gfwspec, unsigned int parent_hwirq, unsigned int parent_type); int gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *gc, union gpio_irq_fwspec *gfwspec, unsigned int parent_hwirq, unsigned int parent_type); #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ #ifdef CONFIG_GPIOLIB_IRQCHIP int gpiochip_irqchip_add_domain(struct gpio_chip *gc, struct irq_domain *domain); #else #include <asm/bug.h> static inline int gpiochip_irqchip_add_domain(struct gpio_chip *gc, struct irq_domain *domain) { WARN_ON(1); return -EINVAL; } #endif int gpiochip_generic_request(struct gpio_chip *gc, unsigned int offset); void gpiochip_generic_free(struct gpio_chip *gc, unsigned int offset); int gpiochip_generic_config(struct gpio_chip *gc, unsigned int offset, unsigned long config); /** * struct gpio_pin_range - pin range controlled by a gpio chip * @node: list for maintaining set of pin ranges, used internally * @pctldev: pinctrl device which handles corresponding pins * @range: actual range of pins controlled by a gpio controller */ struct gpio_pin_range { struct list_head node; struct pinctrl_dev *pctldev; struct pinctrl_gpio_range range; }; #ifdef CONFIG_PINCTRL int gpiochip_add_pin_range_with_pins(struct gpio_chip *gc, const char *pinctl_name, unsigned int gpio_offset, unsigned int pin_offset, unsigned int const *pins, unsigned int npins); int gpiochip_add_pingroup_range(struct gpio_chip *gc, struct pinctrl_dev *pctldev, unsigned int gpio_offset, const char *pin_group); void gpiochip_remove_pin_ranges(struct gpio_chip *gc); static inline int gpiochip_add_pin_range(struct gpio_chip *gc, const char *pinctl_name, unsigned int gpio_offset, unsigned int pin_offset, unsigned int npins) { return gpiochip_add_pin_range_with_pins(gc, pinctl_name, gpio_offset, pin_offset, NULL, npins); } static inline int gpiochip_add_sparse_pin_range(struct gpio_chip *gc, const char *pinctl_name, unsigned int gpio_offset, unsigned int const *pins, unsigned int npins) { return gpiochip_add_pin_range_with_pins(gc, pinctl_name, gpio_offset, 0, pins, npins); } #else /* ! CONFIG_PINCTRL */ static inline int gpiochip_add_pin_range_with_pins(struct gpio_chip *gc, const char *pinctl_name, unsigned int gpio_offset, unsigned int pin_offset, unsigned int npins) { return 0; } static inline int gpiochip_add_pin_range(struct gpio_chip *gc, const char *pinctl_name, unsigned int gpio_offset, unsigned int pin_offset, unsigned int npins) { return 0; } static inline int gpiochip_add_sparse_pin_range(struct gpio_chip *gc, const char *pinctl_name, unsigned int gpio_offset, unsigned int const *pins, unsigned int npins) { return 0; } static inline int gpiochip_add_pingroup_range(struct gpio_chip *gc, struct pinctrl_dev *pctldev, unsigned int gpio_offset, const char *pin_group) { return 0; } static inline void gpiochip_remove_pin_ranges(struct gpio_chip *gc) { } #endif /* CONFIG_PINCTRL */ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc, unsigned int hwnum, const char *label, enum gpio_lookup_flags lflags, enum gpiod_flags dflags); void gpiochip_free_own_desc(struct gpio_desc *desc); struct gpio_desc * gpio_device_get_desc(struct gpio_device *gdev, unsigned int hwnum); struct gpio_chip *gpio_device_get_chip(struct gpio_device *gdev); #ifdef CONFIG_GPIOLIB /* lock/unlock as IRQ */ int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_unlock_as_irq(struct gpio_chip *gc, unsigned int offset); struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc); struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc); /* struct gpio_device getters */ int gpio_device_get_base(struct gpio_device *gdev); const char *gpio_device_get_label(struct gpio_device *gdev); struct gpio_device *gpio_device_find_by_label(const char *label); struct gpio_device *gpio_device_find_by_fwnode(const struct fwnode_handle *fwnode); #else /* CONFIG_GPIOLIB */ #include <asm/bug.h> static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) { /* GPIO can never have been requested */ WARN_ON(1); return ERR_PTR(-ENODEV); } static inline struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc) { WARN_ON(1); return ERR_PTR(-ENODEV); } static inline int gpio_device_get_base(struct gpio_device *gdev) { WARN_ON(1); return -ENODEV; } static inline const char *gpio_device_get_label(struct gpio_device *gdev) { WARN_ON(1); return NULL; } static inline struct gpio_device *gpio_device_find_by_label(const char *label) { WARN_ON(1); return NULL; } static inline struct gpio_device *gpio_device_find_by_fwnode(const struct fwnode_handle *fwnode) { WARN_ON(1); return NULL; } static inline int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset) { WARN_ON(1); return -EINVAL; } static inline void gpiochip_unlock_as_irq(struct gpio_chip *gc, unsigned int offset) { WARN_ON(1); } #endif /* CONFIG_GPIOLIB */ #define for_each_gpiochip_node(dev, child) \ device_for_each_child_node(dev, child) \ for_each_if(fwnode_property_present(child, "gpio-controller")) static inline unsigned int gpiochip_node_count(struct device *dev) { struct fwnode_handle *child; unsigned int count = 0; for_each_gpiochip_node(dev, child) count++; return count; } static inline struct fwnode_handle *gpiochip_node_get_first(struct device *dev) { struct fwnode_handle *fwnode; for_each_gpiochip_node(dev, fwnode) return fwnode; return NULL; } #endif /* __LINUX_GPIO_DRIVER_H */ |
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3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 | // SPDX-License-Identifier: GPL-2.0+ /* * comedi/comedi_fops.c * comedi kernel module * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) 1997-2007 David A. Schleef <ds@schleef.org> * compat ioctls: * Author: Ian Abbott, MEV Ltd. <abbotti@mev.co.uk> * Copyright (C) 2007 MEV Ltd. <http://www.mev.co.uk/> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/sched/signal.h> #include <linux/fcntl.h> #include <linux/delay.h> #include <linux/mm.h> #include <linux/slab.h> #include <linux/poll.h> #include <linux/device.h> #include <linux/fs.h> #include <linux/comedi/comedidev.h> #include <linux/cdev.h> #include <linux/io.h> #include <linux/uaccess.h> #include <linux/compat.h> #include "comedi_internal.h" /* * comedi_subdevice "runflags" * COMEDI_SRF_RT: DEPRECATED: command is running real-time * COMEDI_SRF_ERROR: indicates an COMEDI_CB_ERROR event has occurred * since the last command was started * COMEDI_SRF_RUNNING: command is running * COMEDI_SRF_FREE_SPRIV: free s->private on detach * * COMEDI_SRF_BUSY_MASK: runflags that indicate the subdevice is "busy" */ #define COMEDI_SRF_RT BIT(1) #define COMEDI_SRF_ERROR BIT(2) #define COMEDI_SRF_RUNNING BIT(27) #define COMEDI_SRF_FREE_SPRIV BIT(31) #define COMEDI_SRF_BUSY_MASK (COMEDI_SRF_ERROR | COMEDI_SRF_RUNNING) /** * struct comedi_file - Per-file private data for COMEDI device * @dev: COMEDI device. * @read_subdev: Current "read" subdevice. * @write_subdev: Current "write" subdevice. * @last_detach_count: Last known detach count. * @last_attached: Last known attached/detached state. */ struct comedi_file { struct comedi_device *dev; struct comedi_subdevice *read_subdev; struct comedi_subdevice *write_subdev; unsigned int last_detach_count; unsigned int last_attached:1; }; #define COMEDI_NUM_MINORS 0x100 #define COMEDI_NUM_SUBDEVICE_MINORS \ (COMEDI_NUM_MINORS - COMEDI_NUM_BOARD_MINORS) static unsigned short comedi_num_legacy_minors; module_param(comedi_num_legacy_minors, ushort, 0444); MODULE_PARM_DESC(comedi_num_legacy_minors, "number of comedi minor devices to reserve for non-auto-configured devices (default 0)" ); unsigned int comedi_default_buf_size_kb = CONFIG_COMEDI_DEFAULT_BUF_SIZE_KB; module_param(comedi_default_buf_size_kb, uint, 0644); MODULE_PARM_DESC(comedi_default_buf_size_kb, "default asynchronous buffer size in KiB (default " __MODULE_STRING(CONFIG_COMEDI_DEFAULT_BUF_SIZE_KB) ")"); unsigned int comedi_default_buf_maxsize_kb = CONFIG_COMEDI_DEFAULT_BUF_MAXSIZE_KB; module_param(comedi_default_buf_maxsize_kb, uint, 0644); MODULE_PARM_DESC(comedi_default_buf_maxsize_kb, "default maximum size of asynchronous buffer in KiB (default " __MODULE_STRING(CONFIG_COMEDI_DEFAULT_BUF_MAXSIZE_KB) ")"); static DEFINE_MUTEX(comedi_board_minor_table_lock); static struct comedi_device *comedi_board_minor_table[COMEDI_NUM_BOARD_MINORS]; static DEFINE_MUTEX(comedi_subdevice_minor_table_lock); /* Note: indexed by minor - COMEDI_NUM_BOARD_MINORS. */ static struct comedi_subdevice *comedi_subdevice_minor_table[COMEDI_NUM_SUBDEVICE_MINORS]; static struct cdev comedi_cdev; static void comedi_device_init(struct comedi_device *dev) { kref_init(&dev->refcount); spin_lock_init(&dev->spinlock); mutex_init(&dev->mutex); init_rwsem(&dev->attach_lock); dev->minor = -1; } static void comedi_dev_kref_release(struct kref *kref) { struct comedi_device *dev = container_of(kref, struct comedi_device, refcount); mutex_destroy(&dev->mutex); put_device(dev->class_dev); kfree(dev); } /** * comedi_dev_put() - Release a use of a COMEDI device * @dev: COMEDI device. * * Must be called when a user of a COMEDI device is finished with it. * When the last user of the COMEDI device calls this function, the * COMEDI device is destroyed. * * Return: 1 if the COMEDI device is destroyed by this call or @dev is * NULL, otherwise return 0. Callers must not assume the COMEDI * device is still valid if this function returns 0. */ int comedi_dev_put(struct comedi_device *dev) { if (dev) return kref_put(&dev->refcount, comedi_dev_kref_release); return 1; } EXPORT_SYMBOL_GPL(comedi_dev_put); static struct comedi_device *comedi_dev_get(struct comedi_device *dev) { if (dev) kref_get(&dev->refcount); return dev; } static void comedi_device_cleanup(struct comedi_device *dev) { struct module *driver_module = NULL; if (!dev) return; mutex_lock(&dev->mutex); if (dev->attached) driver_module = dev->driver->module; comedi_device_detach(dev); if (driver_module && dev->use_count) module_put(driver_module); mutex_unlock(&dev->mutex); } static bool comedi_clear_board_dev(struct comedi_device *dev) { unsigned int i = dev->minor; bool cleared = false; lockdep_assert_held(&dev->mutex); mutex_lock(&comedi_board_minor_table_lock); if (dev == comedi_board_minor_table[i]) { comedi_board_minor_table[i] = NULL; cleared = true; } mutex_unlock(&comedi_board_minor_table_lock); return cleared; } static struct comedi_device *comedi_clear_board_minor(unsigned int minor) { struct comedi_device *dev; mutex_lock(&comedi_board_minor_table_lock); dev = comedi_board_minor_table[minor]; comedi_board_minor_table[minor] = NULL; mutex_unlock(&comedi_board_minor_table_lock); return dev; } static struct comedi_subdevice * comedi_subdevice_from_minor(const struct comedi_device *dev, unsigned int minor) { struct comedi_subdevice *s; unsigned int i = minor - COMEDI_NUM_BOARD_MINORS; mutex_lock(&comedi_subdevice_minor_table_lock); s = comedi_subdevice_minor_table[i]; if (s && s->device != dev) s = NULL; mutex_unlock(&comedi_subdevice_minor_table_lock); return s; } static struct comedi_device *comedi_dev_get_from_board_minor(unsigned int minor) { struct comedi_device *dev; mutex_lock(&comedi_board_minor_table_lock); dev = comedi_dev_get(comedi_board_minor_table[minor]); mutex_unlock(&comedi_board_minor_table_lock); return dev; } static struct comedi_device * comedi_dev_get_from_subdevice_minor(unsigned int minor) { struct comedi_device *dev; struct comedi_subdevice *s; unsigned int i = minor - COMEDI_NUM_BOARD_MINORS; mutex_lock(&comedi_subdevice_minor_table_lock); s = comedi_subdevice_minor_table[i]; dev = comedi_dev_get(s ? s->device : NULL); mutex_unlock(&comedi_subdevice_minor_table_lock); return dev; } /** * comedi_dev_get_from_minor() - Get COMEDI device by minor device number * @minor: Minor device number. * * Finds the COMEDI device associated with the minor device number, if any, * and increments its reference count. The COMEDI device is prevented from * being freed until a matching call is made to comedi_dev_put(). * * Return: A pointer to the COMEDI device if it exists, with its usage * reference incremented. Return NULL if no COMEDI device exists with the * specified minor device number. */ struct comedi_device *comedi_dev_get_from_minor(unsigned int minor) { if (minor < COMEDI_NUM_BOARD_MINORS) return comedi_dev_get_from_board_minor(minor); return comedi_dev_get_from_subdevice_minor(minor); } EXPORT_SYMBOL_GPL(comedi_dev_get_from_minor); static struct comedi_subdevice * comedi_read_subdevice(const struct comedi_device *dev, unsigned int minor) { struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (minor >= COMEDI_NUM_BOARD_MINORS) { s = comedi_subdevice_from_minor(dev, minor); if (!s || (s->subdev_flags & SDF_CMD_READ)) return s; } return dev->read_subdev; } static struct comedi_subdevice * comedi_write_subdevice(const struct comedi_device *dev, unsigned int minor) { struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (minor >= COMEDI_NUM_BOARD_MINORS) { s = comedi_subdevice_from_minor(dev, minor); if (!s || (s->subdev_flags & SDF_CMD_WRITE)) return s; } return dev->write_subdev; } static void comedi_file_reset(struct file *file) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi_subdevice *s, *read_s, *write_s; unsigned int minor = iminor(file_inode(file)); read_s = dev->read_subdev; write_s = dev->write_subdev; if (minor >= COMEDI_NUM_BOARD_MINORS) { s = comedi_subdevice_from_minor(dev, minor); if (!s || s->subdev_flags & SDF_CMD_READ) read_s = s; if (!s || s->subdev_flags & SDF_CMD_WRITE) write_s = s; } cfp->last_attached = dev->attached; cfp->last_detach_count = dev->detach_count; WRITE_ONCE(cfp->read_subdev, read_s); WRITE_ONCE(cfp->write_subdev, write_s); } static void comedi_file_check(struct file *file) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; if (cfp->last_attached != dev->attached || cfp->last_detach_count != dev->detach_count) comedi_file_reset(file); } static struct comedi_subdevice *comedi_file_read_subdevice(struct file *file) { struct comedi_file *cfp = file->private_data; comedi_file_check(file); return READ_ONCE(cfp->read_subdev); } static struct comedi_subdevice *comedi_file_write_subdevice(struct file *file) { struct comedi_file *cfp = file->private_data; comedi_file_check(file); return READ_ONCE(cfp->write_subdev); } static int resize_async_buffer(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int new_size) { struct comedi_async *async = s->async; int retval; lockdep_assert_held(&dev->mutex); if (new_size > async->max_bufsize) return -EPERM; if (s->busy) { dev_dbg(dev->class_dev, "subdevice is busy, cannot resize buffer\n"); return -EBUSY; } if (comedi_buf_is_mmapped(s)) { dev_dbg(dev->class_dev, "subdevice is mmapped, cannot resize buffer\n"); return -EBUSY; } /* make sure buffer is an integral number of pages (we round up) */ new_size = (new_size + PAGE_SIZE - 1) & PAGE_MASK; retval = comedi_buf_alloc(dev, s, new_size); if (retval < 0) return retval; if (s->buf_change) { retval = s->buf_change(dev, s); if (retval < 0) return retval; } dev_dbg(dev->class_dev, "subd %d buffer resized to %i bytes\n", s->index, async->prealloc_bufsz); return 0; } /* sysfs attribute files */ static ssize_t max_read_buffer_kb_show(struct device *csdev, struct device_attribute *attr, char *buf) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size = 0; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_read_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_READ) && s->async) size = s->async->max_bufsize / 1024; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return sysfs_emit(buf, "%u\n", size); } static ssize_t max_read_buffer_kb_store(struct device *csdev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size; int err; err = kstrtouint(buf, 10, &size); if (err) return err; if (size > (UINT_MAX / 1024)) return -EINVAL; size *= 1024; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_read_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_READ) && s->async) s->async->max_bufsize = size; else err = -EINVAL; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return err ? err : count; } static DEVICE_ATTR_RW(max_read_buffer_kb); static ssize_t read_buffer_kb_show(struct device *csdev, struct device_attribute *attr, char *buf) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size = 0; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_read_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_READ) && s->async) size = s->async->prealloc_bufsz / 1024; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return sysfs_emit(buf, "%u\n", size); } static ssize_t read_buffer_kb_store(struct device *csdev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size; int err; err = kstrtouint(buf, 10, &size); if (err) return err; if (size > (UINT_MAX / 1024)) return -EINVAL; size *= 1024; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_read_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_READ) && s->async) err = resize_async_buffer(dev, s, size); else err = -EINVAL; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return err ? err : count; } static DEVICE_ATTR_RW(read_buffer_kb); static ssize_t max_write_buffer_kb_show(struct device *csdev, struct device_attribute *attr, char *buf) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size = 0; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_write_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_WRITE) && s->async) size = s->async->max_bufsize / 1024; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return sysfs_emit(buf, "%u\n", size); } static ssize_t max_write_buffer_kb_store(struct device *csdev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size; int err; err = kstrtouint(buf, 10, &size); if (err) return err; if (size > (UINT_MAX / 1024)) return -EINVAL; size *= 1024; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_write_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_WRITE) && s->async) s->async->max_bufsize = size; else err = -EINVAL; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return err ? err : count; } static DEVICE_ATTR_RW(max_write_buffer_kb); static ssize_t write_buffer_kb_show(struct device *csdev, struct device_attribute *attr, char *buf) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size = 0; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_write_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_WRITE) && s->async) size = s->async->prealloc_bufsz / 1024; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return sysfs_emit(buf, "%u\n", size); } static ssize_t write_buffer_kb_store(struct device *csdev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int minor = MINOR(csdev->devt); struct comedi_device *dev; struct comedi_subdevice *s; unsigned int size; int err; err = kstrtouint(buf, 10, &size); if (err) return err; if (size > (UINT_MAX / 1024)) return -EINVAL; size *= 1024; dev = comedi_dev_get_from_minor(minor); if (!dev) return -ENODEV; mutex_lock(&dev->mutex); s = comedi_write_subdevice(dev, minor); if (s && (s->subdev_flags & SDF_CMD_WRITE) && s->async) err = resize_async_buffer(dev, s, size); else err = -EINVAL; mutex_unlock(&dev->mutex); comedi_dev_put(dev); return err ? err : count; } static DEVICE_ATTR_RW(write_buffer_kb); static struct attribute *comedi_dev_attrs[] = { &dev_attr_max_read_buffer_kb.attr, &dev_attr_read_buffer_kb.attr, &dev_attr_max_write_buffer_kb.attr, &dev_attr_write_buffer_kb.attr, NULL, }; ATTRIBUTE_GROUPS(comedi_dev); static const struct class comedi_class = { .name = "comedi", .dev_groups = comedi_dev_groups, }; static void comedi_free_board_dev(struct comedi_device *dev) { if (dev) { comedi_device_cleanup(dev); if (dev->class_dev) { device_destroy(&comedi_class, MKDEV(COMEDI_MAJOR, dev->minor)); } comedi_dev_put(dev); } } static void __comedi_clear_subdevice_runflags(struct comedi_subdevice *s, unsigned int bits) { s->runflags &= ~bits; } static void __comedi_set_subdevice_runflags(struct comedi_subdevice *s, unsigned int bits) { s->runflags |= bits; } static void comedi_update_subdevice_runflags(struct comedi_subdevice *s, unsigned int mask, unsigned int bits) { unsigned long flags; spin_lock_irqsave(&s->spin_lock, flags); __comedi_clear_subdevice_runflags(s, mask); __comedi_set_subdevice_runflags(s, bits & mask); spin_unlock_irqrestore(&s->spin_lock, flags); } static unsigned int __comedi_get_subdevice_runflags(struct comedi_subdevice *s) { return s->runflags; } static unsigned int comedi_get_subdevice_runflags(struct comedi_subdevice *s) { unsigned long flags; unsigned int runflags; spin_lock_irqsave(&s->spin_lock, flags); runflags = __comedi_get_subdevice_runflags(s); spin_unlock_irqrestore(&s->spin_lock, flags); return runflags; } static bool comedi_is_runflags_running(unsigned int runflags) { return runflags & COMEDI_SRF_RUNNING; } static bool comedi_is_runflags_in_error(unsigned int runflags) { return runflags & COMEDI_SRF_ERROR; } /** * comedi_is_subdevice_running() - Check if async command running on subdevice * @s: COMEDI subdevice. * * Return: %true if an asynchronous COMEDI command is active on the * subdevice, else %false. */ bool comedi_is_subdevice_running(struct comedi_subdevice *s) { unsigned int runflags = comedi_get_subdevice_runflags(s); return comedi_is_runflags_running(runflags); } EXPORT_SYMBOL_GPL(comedi_is_subdevice_running); static bool __comedi_is_subdevice_running(struct comedi_subdevice *s) { unsigned int runflags = __comedi_get_subdevice_runflags(s); return comedi_is_runflags_running(runflags); } bool comedi_can_auto_free_spriv(struct comedi_subdevice *s) { unsigned int runflags = __comedi_get_subdevice_runflags(s); return runflags & COMEDI_SRF_FREE_SPRIV; } /** * comedi_set_spriv_auto_free() - Mark subdevice private data as freeable * @s: COMEDI subdevice. * * Mark the subdevice as having a pointer to private data that can be * automatically freed when the COMEDI device is detached from the low-level * driver. */ void comedi_set_spriv_auto_free(struct comedi_subdevice *s) { __comedi_set_subdevice_runflags(s, COMEDI_SRF_FREE_SPRIV); } EXPORT_SYMBOL_GPL(comedi_set_spriv_auto_free); /** * comedi_alloc_spriv - Allocate memory for the subdevice private data * @s: COMEDI subdevice. * @size: Size of the memory to allocate. * * Allocate memory for the subdevice private data and point @s->private * to it. The memory will be freed automatically when the COMEDI device * is detached from the low-level driver. * * Return: A pointer to the allocated memory @s->private on success. * Return NULL on failure. */ void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size) { s->private = kzalloc(size, GFP_KERNEL); if (s->private) comedi_set_spriv_auto_free(s); return s->private; } EXPORT_SYMBOL_GPL(comedi_alloc_spriv); /* * This function restores a subdevice to an idle state. */ static void do_become_nonbusy(struct comedi_device *dev, struct comedi_subdevice *s) { struct comedi_async *async = s->async; lockdep_assert_held(&dev->mutex); comedi_update_subdevice_runflags(s, COMEDI_SRF_RUNNING, 0); if (async) { comedi_buf_reset(s); async->inttrig = NULL; kfree(async->cmd.chanlist); async->cmd.chanlist = NULL; s->busy = NULL; wake_up_interruptible_all(&async->wait_head); } else { dev_err(dev->class_dev, "BUG: (?) %s called with async=NULL\n", __func__); s->busy = NULL; } } static int do_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { int ret = 0; lockdep_assert_held(&dev->mutex); if (comedi_is_subdevice_running(s) && s->cancel) ret = s->cancel(dev, s); do_become_nonbusy(dev, s); return ret; } void comedi_device_cancel_all(struct comedi_device *dev) { struct comedi_subdevice *s; int i; lockdep_assert_held(&dev->mutex); if (!dev->attached) return; for (i = 0; i < dev->n_subdevices; i++) { s = &dev->subdevices[i]; if (s->async) do_cancel(dev, s); } } static int is_device_busy(struct comedi_device *dev) { struct comedi_subdevice *s; int i; lockdep_assert_held_write(&dev->attach_lock); lockdep_assert_held(&dev->mutex); if (!dev->attached) return 0; for (i = 0; i < dev->n_subdevices; i++) { s = &dev->subdevices[i]; if (s->busy) return 1; if (!s->async) continue; if (comedi_buf_is_mmapped(s)) return 1; /* * There may be tasks still waiting on the subdevice's wait * queue, although they should already be about to be removed * from it since the subdevice has no active async command. */ if (wq_has_sleeper(&s->async->wait_head)) return 1; } return 0; } /* * COMEDI_DEVCONFIG ioctl * attaches (and configures) or detaches a legacy device * * arg: * pointer to comedi_devconfig structure (NULL if detaching) * * reads: * comedi_devconfig structure (if attaching) * * writes: * nothing */ static int do_devconfig_ioctl(struct comedi_device *dev, struct comedi_devconfig __user *arg) { struct comedi_devconfig it; lockdep_assert_held(&dev->mutex); if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (!arg) { int rc = 0; if (dev->attached) { down_write(&dev->attach_lock); if (is_device_busy(dev)) { rc = -EBUSY; } else { struct module *driver_module = dev->driver->module; comedi_device_detach_locked(dev); module_put(driver_module); } up_write(&dev->attach_lock); } return rc; } if (copy_from_user(&it, arg, sizeof(it))) return -EFAULT; it.board_name[COMEDI_NAMELEN - 1] = 0; if (it.options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) { dev_warn(dev->class_dev, "comedi_config --init_data is deprecated\n"); return -EINVAL; } if (dev->minor >= comedi_num_legacy_minors) /* don't re-use dynamically allocated comedi devices */ return -EBUSY; /* This increments the driver module count on success. */ return comedi_device_attach(dev, &it); } /* * COMEDI_BUFCONFIG ioctl * buffer configuration * * arg: * pointer to comedi_bufconfig structure * * reads: * comedi_bufconfig structure * * writes: * modified comedi_bufconfig structure */ static int do_bufconfig_ioctl(struct comedi_device *dev, struct comedi_bufconfig __user *arg) { struct comedi_bufconfig bc; struct comedi_async *async; struct comedi_subdevice *s; int retval = 0; lockdep_assert_held(&dev->mutex); if (copy_from_user(&bc, arg, sizeof(bc))) return -EFAULT; if (bc.subdevice >= dev->n_subdevices) return -EINVAL; s = &dev->subdevices[bc.subdevice]; async = s->async; if (!async) { dev_dbg(dev->class_dev, "subdevice does not have async capability\n"); bc.size = 0; bc.maximum_size = 0; goto copyback; } if (bc.maximum_size) { if (!capable(CAP_SYS_ADMIN)) return -EPERM; async->max_bufsize = bc.maximum_size; } if (bc.size) { retval = resize_async_buffer(dev, s, bc.size); if (retval < 0) return retval; } bc.size = async->prealloc_bufsz; bc.maximum_size = async->max_bufsize; copyback: if (copy_to_user(arg, &bc, sizeof(bc))) return -EFAULT; return 0; } /* * COMEDI_DEVINFO ioctl * device info * * arg: * pointer to comedi_devinfo structure * * reads: * nothing * * writes: * comedi_devinfo structure */ static int do_devinfo_ioctl(struct comedi_device *dev, struct comedi_devinfo __user *arg, struct file *file) { struct comedi_subdevice *s; struct comedi_devinfo devinfo; lockdep_assert_held(&dev->mutex); memset(&devinfo, 0, sizeof(devinfo)); /* fill devinfo structure */ devinfo.version_code = COMEDI_VERSION_CODE; devinfo.n_subdevs = dev->n_subdevices; strscpy(devinfo.driver_name, dev->driver->driver_name, COMEDI_NAMELEN); strscpy(devinfo.board_name, dev->board_name, COMEDI_NAMELEN); s = comedi_file_read_subdevice(file); if (s) devinfo.read_subdevice = s->index; else devinfo.read_subdevice = -1; s = comedi_file_write_subdevice(file); if (s) devinfo.write_subdevice = s->index; else devinfo.write_subdevice = -1; if (copy_to_user(arg, &devinfo, sizeof(devinfo))) return -EFAULT; return 0; } /* * COMEDI_SUBDINFO ioctl * subdevices info * * arg: * pointer to array of comedi_subdinfo structures * * reads: * nothing * * writes: * array of comedi_subdinfo structures */ static int do_subdinfo_ioctl(struct comedi_device *dev, struct comedi_subdinfo __user *arg, void *file) { int ret, i; struct comedi_subdinfo *tmp, *us; struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); tmp = kcalloc(dev->n_subdevices, sizeof(*tmp), GFP_KERNEL); if (!tmp) return -ENOMEM; /* fill subdinfo structs */ for (i = 0; i < dev->n_subdevices; i++) { s = &dev->subdevices[i]; us = tmp + i; us->type = s->type; us->n_chan = s->n_chan; us->subd_flags = s->subdev_flags; if (comedi_is_subdevice_running(s)) us->subd_flags |= SDF_RUNNING; #define TIMER_nanosec 5 /* backwards compatibility */ us->timer_type = TIMER_nanosec; us->len_chanlist = s->len_chanlist; us->maxdata = s->maxdata; if (s->range_table) { us->range_type = (i << 24) | (0 << 16) | (s->range_table->length); } else { us->range_type = 0; /* XXX */ } if (s->busy) us->subd_flags |= SDF_BUSY; if (s->busy == file) us->subd_flags |= SDF_BUSY_OWNER; if (s->lock) us->subd_flags |= SDF_LOCKED; if (s->lock == file) us->subd_flags |= SDF_LOCK_OWNER; if (!s->maxdata && s->maxdata_list) us->subd_flags |= SDF_MAXDATA; if (s->range_table_list) us->subd_flags |= SDF_RANGETYPE; if (s->do_cmd) us->subd_flags |= SDF_CMD; if (s->insn_bits != &insn_inval) us->insn_bits_support = COMEDI_SUPPORTED; else us->insn_bits_support = COMEDI_UNSUPPORTED; } ret = copy_to_user(arg, tmp, dev->n_subdevices * sizeof(*tmp)); kfree(tmp); return ret ? -EFAULT : 0; } /* * COMEDI_CHANINFO ioctl * subdevice channel info * * arg: * pointer to comedi_chaninfo structure * * reads: * comedi_chaninfo structure * * writes: * array of maxdata values to chaninfo->maxdata_list if requested * array of range table lengths to chaninfo->range_table_list if requested */ static int do_chaninfo_ioctl(struct comedi_device *dev, struct comedi_chaninfo *it) { struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (it->subdev >= dev->n_subdevices) return -EINVAL; s = &dev->subdevices[it->subdev]; if (it->maxdata_list) { if (s->maxdata || !s->maxdata_list) return -EINVAL; if (copy_to_user(it->maxdata_list, s->maxdata_list, s->n_chan * sizeof(unsigned int))) return -EFAULT; } if (it->flaglist) return -EINVAL; /* flaglist not supported */ if (it->rangelist) { int i; if (!s->range_table_list) return -EINVAL; for (i = 0; i < s->n_chan; i++) { int x; x = (dev->minor << 28) | (it->subdev << 24) | (i << 16) | (s->range_table_list[i]->length); if (put_user(x, it->rangelist + i)) return -EFAULT; } } return 0; } /* * COMEDI_BUFINFO ioctl * buffer information * * arg: * pointer to comedi_bufinfo structure * * reads: * comedi_bufinfo structure * * writes: * modified comedi_bufinfo structure */ static int do_bufinfo_ioctl(struct comedi_device *dev, struct comedi_bufinfo __user *arg, void *file) { struct comedi_bufinfo bi; struct comedi_subdevice *s; struct comedi_async *async; unsigned int runflags; int retval = 0; bool become_nonbusy = false; lockdep_assert_held(&dev->mutex); if (copy_from_user(&bi, arg, sizeof(bi))) return -EFAULT; if (bi.subdevice >= dev->n_subdevices) return -EINVAL; s = &dev->subdevices[bi.subdevice]; async = s->async; if (!async || s->busy != file) return -EINVAL; runflags = comedi_get_subdevice_runflags(s); if (!(async->cmd.flags & CMDF_WRITE)) { /* command was set up in "read" direction */ if (bi.bytes_read) { comedi_buf_read_alloc(s, bi.bytes_read); bi.bytes_read = comedi_buf_read_free(s, bi.bytes_read); } /* * If nothing left to read, and command has stopped, and * {"read" position not updated or command stopped normally}, * then become non-busy. */ if (comedi_buf_read_n_available(s) == 0 && !comedi_is_runflags_running(runflags) && (bi.bytes_read == 0 || !comedi_is_runflags_in_error(runflags))) { become_nonbusy = true; if (comedi_is_runflags_in_error(runflags)) retval = -EPIPE; } bi.bytes_written = 0; } else { /* command was set up in "write" direction */ if (!comedi_is_runflags_running(runflags)) { bi.bytes_written = 0; become_nonbusy = true; if (comedi_is_runflags_in_error(runflags)) retval = -EPIPE; } else if (bi.bytes_written) { comedi_buf_write_alloc(s, bi.bytes_written); bi.bytes_written = comedi_buf_write_free(s, bi.bytes_written); } bi.bytes_read = 0; } bi.buf_write_count = async->buf_write_count; bi.buf_write_ptr = async->buf_write_ptr; bi.buf_read_count = async->buf_read_count; bi.buf_read_ptr = async->buf_read_ptr; if (become_nonbusy) do_become_nonbusy(dev, s); if (retval) return retval; if (copy_to_user(arg, &bi, sizeof(bi))) return -EFAULT; return 0; } static int check_insn_config_length(struct comedi_insn *insn, unsigned int *data) { if (insn->n < 1) return -EINVAL; switch (data[0]) { case INSN_CONFIG_DIO_OUTPUT: case INSN_CONFIG_DIO_INPUT: case INSN_CONFIG_DISARM: case INSN_CONFIG_RESET: if (insn->n == 1) return 0; break; case INSN_CONFIG_ARM: case INSN_CONFIG_DIO_QUERY: case INSN_CONFIG_BLOCK_SIZE: case INSN_CONFIG_FILTER: case INSN_CONFIG_SERIAL_CLOCK: case INSN_CONFIG_BIDIRECTIONAL_DATA: case INSN_CONFIG_ALT_SOURCE: case INSN_CONFIG_SET_COUNTER_MODE: case INSN_CONFIG_8254_READ_STATUS: case INSN_CONFIG_SET_ROUTING: case INSN_CONFIG_GET_ROUTING: case INSN_CONFIG_GET_PWM_STATUS: case INSN_CONFIG_PWM_SET_PERIOD: case INSN_CONFIG_PWM_GET_PERIOD: if (insn->n == 2) return 0; break; case INSN_CONFIG_SET_GATE_SRC: case INSN_CONFIG_GET_GATE_SRC: case INSN_CONFIG_SET_CLOCK_SRC: case INSN_CONFIG_GET_CLOCK_SRC: case INSN_CONFIG_SET_OTHER_SRC: case INSN_CONFIG_GET_COUNTER_STATUS: case INSN_CONFIG_GET_PWM_OUTPUT: case INSN_CONFIG_PWM_SET_H_BRIDGE: case INSN_CONFIG_PWM_GET_H_BRIDGE: case INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE: if (insn->n == 3) return 0; break; case INSN_CONFIG_PWM_OUTPUT: case INSN_CONFIG_ANALOG_TRIG: case INSN_CONFIG_TIMER_1: if (insn->n == 5) return 0; break; case INSN_CONFIG_DIGITAL_TRIG: if (insn->n == 6) return 0; break; case INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS: if (insn->n >= 4) return 0; break; /* * by default we allow the insn since we don't have checks for * all possible cases yet */ default: pr_warn("No check for data length of config insn id %i is implemented\n", data[0]); pr_warn("Add a check to %s in %s\n", __func__, __FILE__); pr_warn("Assuming n=%i is correct\n", insn->n); return 0; } return -EINVAL; } static int check_insn_device_config_length(struct comedi_insn *insn, unsigned int *data) { if (insn->n < 1) return -EINVAL; switch (data[0]) { case INSN_DEVICE_CONFIG_TEST_ROUTE: case INSN_DEVICE_CONFIG_CONNECT_ROUTE: case INSN_DEVICE_CONFIG_DISCONNECT_ROUTE: if (insn->n == 3) return 0; break; case INSN_DEVICE_CONFIG_GET_ROUTES: /* * Big enough for config_id and the length of the userland * memory buffer. Additional length should be in factors of 2 * to communicate any returned route pairs (source,destination). */ if (insn->n >= 2) return 0; break; } return -EINVAL; } /** * get_valid_routes() - Calls low-level driver get_valid_routes function to * either return a count of valid routes to user, or copy * of list of all valid device routes to buffer in * userspace. * @dev: comedi device pointer * @data: data from user insn call. The length of the data must be >= 2. * data[0] must contain the INSN_DEVICE_CONFIG config_id. * data[1](input) contains the number of _pairs_ for which memory is * allotted from the user. If the user specifies '0', then only * the number of pairs available is returned. * data[1](output) returns either the number of pairs available (if none * where requested) or the number of _pairs_ that are copied back * to the user. * data[2::2] returns each (source, destination) pair. * * Return: -EINVAL if low-level driver does not allocate and return routes as * expected. Returns 0 otherwise. */ static int get_valid_routes(struct comedi_device *dev, unsigned int *data) { lockdep_assert_held(&dev->mutex); data[1] = dev->get_valid_routes(dev, data[1], data + 2); return 0; } static int parse_insn(struct comedi_device *dev, struct comedi_insn *insn, unsigned int *data, void *file) { struct comedi_subdevice *s; int ret = 0; int i; lockdep_assert_held(&dev->mutex); if (insn->insn & INSN_MASK_SPECIAL) { /* a non-subdevice instruction */ switch (insn->insn) { case INSN_GTOD: { struct timespec64 tv; if (insn->n != 2) { ret = -EINVAL; break; } ktime_get_real_ts64(&tv); /* unsigned data safe until 2106 */ data[0] = (unsigned int)tv.tv_sec; data[1] = tv.tv_nsec / NSEC_PER_USEC; ret = 2; break; } case INSN_WAIT: if (insn->n != 1 || data[0] >= 100000) { ret = -EINVAL; break; } udelay(data[0] / 1000); ret = 1; break; case INSN_INTTRIG: if (insn->n != 1) { ret = -EINVAL; break; } if (insn->subdev >= dev->n_subdevices) { dev_dbg(dev->class_dev, "%d not usable subdevice\n", insn->subdev); ret = -EINVAL; break; } s = &dev->subdevices[insn->subdev]; if (!s->async) { dev_dbg(dev->class_dev, "no async\n"); ret = -EINVAL; break; } if (!s->async->inttrig) { dev_dbg(dev->class_dev, "no inttrig\n"); ret = -EAGAIN; break; } ret = s->async->inttrig(dev, s, data[0]); if (ret >= 0) ret = 1; break; case INSN_DEVICE_CONFIG: ret = check_insn_device_config_length(insn, data); if (ret) break; if (data[0] == INSN_DEVICE_CONFIG_GET_ROUTES) { /* * data[1] should be the number of _pairs_ that * the memory can hold. */ data[1] = (insn->n - 2) / 2; ret = get_valid_routes(dev, data); break; } /* other global device config instructions. */ ret = dev->insn_device_config(dev, insn, data); break; default: dev_dbg(dev->class_dev, "invalid insn\n"); ret = -EINVAL; break; } } else { /* a subdevice instruction */ unsigned int maxdata; if (insn->subdev >= dev->n_subdevices) { dev_dbg(dev->class_dev, "subdevice %d out of range\n", insn->subdev); ret = -EINVAL; goto out; } s = &dev->subdevices[insn->subdev]; if (s->type == COMEDI_SUBD_UNUSED) { dev_dbg(dev->class_dev, "%d not usable subdevice\n", insn->subdev); ret = -EIO; goto out; } /* are we locked? (ioctl lock) */ if (s->lock && s->lock != file) { dev_dbg(dev->class_dev, "device locked\n"); ret = -EACCES; goto out; } ret = comedi_check_chanlist(s, 1, &insn->chanspec); if (ret < 0) { ret = -EINVAL; dev_dbg(dev->class_dev, "bad chanspec\n"); goto out; } if (s->busy) { ret = -EBUSY; goto out; } /* This looks arbitrary. It is. */ s->busy = parse_insn; switch (insn->insn) { case INSN_READ: ret = s->insn_read(dev, s, insn, data); if (ret == -ETIMEDOUT) { dev_dbg(dev->class_dev, "subdevice %d read instruction timed out\n", s->index); } break; case INSN_WRITE: maxdata = s->maxdata_list ? s->maxdata_list[CR_CHAN(insn->chanspec)] : s->maxdata; for (i = 0; i < insn->n; ++i) { if (data[i] > maxdata) { ret = -EINVAL; dev_dbg(dev->class_dev, "bad data value(s)\n"); break; } } if (ret == 0) { ret = s->insn_write(dev, s, insn, data); if (ret == -ETIMEDOUT) { dev_dbg(dev->class_dev, "subdevice %d write instruction timed out\n", s->index); } } break; case INSN_BITS: if (insn->n != 2) { ret = -EINVAL; } else { /* * Most drivers ignore the base channel in * insn->chanspec. Fix this here if * the subdevice has <= 32 channels. */ unsigned int orig_mask = data[0]; unsigned int shift = 0; if (s->n_chan <= 32) { shift = CR_CHAN(insn->chanspec); if (shift > 0) { insn->chanspec = 0; data[0] <<= shift; data[1] <<= shift; } } ret = s->insn_bits(dev, s, insn, data); data[0] = orig_mask; if (shift > 0) data[1] >>= shift; } break; case INSN_CONFIG: ret = check_insn_config_length(insn, data); if (ret) break; ret = s->insn_config(dev, s, insn, data); break; default: ret = -EINVAL; break; } s->busy = NULL; } out: return ret; } /* * COMEDI_INSNLIST ioctl * synchronous instruction list * * arg: * pointer to comedi_insnlist structure * * reads: * comedi_insnlist structure * array of comedi_insn structures from insnlist->insns pointer * data (for writes) from insns[].data pointers * * writes: * data (for reads) to insns[].data pointers */ /* arbitrary limits */ #define MIN_SAMPLES 16 #define MAX_SAMPLES 65536 static int do_insnlist_ioctl(struct comedi_device *dev, struct comedi_insn *insns, unsigned int n_insns, void *file) { unsigned int *data = NULL; unsigned int max_n_data_required = MIN_SAMPLES; int i = 0; int ret = 0; lockdep_assert_held(&dev->mutex); /* Determine maximum memory needed for all instructions. */ for (i = 0; i < n_insns; ++i) { if (insns[i].n > MAX_SAMPLES) { dev_dbg(dev->class_dev, "number of samples too large\n"); ret = -EINVAL; goto error; } max_n_data_required = max(max_n_data_required, insns[i].n); } /* Allocate scratch space for all instruction data. */ data = kmalloc_array(max_n_data_required, sizeof(unsigned int), GFP_KERNEL); if (!data) { ret = -ENOMEM; goto error; } for (i = 0; i < n_insns; ++i) { unsigned int n = insns[i].n; if (insns[i].insn & INSN_MASK_WRITE) { if (copy_from_user(data, insns[i].data, n * sizeof(unsigned int))) { dev_dbg(dev->class_dev, "copy_from_user failed\n"); ret = -EFAULT; goto error; } if (n < MIN_SAMPLES) { memset(&data[n], 0, (MIN_SAMPLES - n) * sizeof(unsigned int)); } } else { memset(data, 0, max_t(unsigned int, n, MIN_SAMPLES) * sizeof(unsigned int)); } ret = parse_insn(dev, insns + i, data, file); if (ret < 0) goto error; if (insns[i].insn & INSN_MASK_READ) { if (copy_to_user(insns[i].data, data, n * sizeof(unsigned int))) { dev_dbg(dev->class_dev, "copy_to_user failed\n"); ret = -EFAULT; goto error; } } if (need_resched()) schedule(); } error: kfree(data); if (ret < 0) return ret; return i; } #define MAX_INSNS MAX_SAMPLES static int check_insnlist_len(struct comedi_device *dev, unsigned int n_insns) { if (n_insns > MAX_INSNS) { dev_dbg(dev->class_dev, "insnlist length too large\n"); return -EINVAL; } return 0; } /* * COMEDI_INSN ioctl * synchronous instruction * * arg: * pointer to comedi_insn structure * * reads: * comedi_insn structure * data (for writes) from insn->data pointer * * writes: * data (for reads) to insn->data pointer */ static int do_insn_ioctl(struct comedi_device *dev, struct comedi_insn *insn, void *file) { unsigned int *data = NULL; unsigned int n_data = MIN_SAMPLES; int ret = 0; lockdep_assert_held(&dev->mutex); n_data = max(n_data, insn->n); /* This is where the behavior of insn and insnlist deviate. */ if (insn->n > MAX_SAMPLES) { insn->n = MAX_SAMPLES; n_data = MAX_SAMPLES; } data = kmalloc_array(n_data, sizeof(unsigned int), GFP_KERNEL); if (!data) { ret = -ENOMEM; goto error; } if (insn->insn & INSN_MASK_WRITE) { if (copy_from_user(data, insn->data, insn->n * sizeof(unsigned int))) { ret = -EFAULT; goto error; } if (insn->n < MIN_SAMPLES) { memset(&data[insn->n], 0, (MIN_SAMPLES - insn->n) * sizeof(unsigned int)); } } else { memset(data, 0, n_data * sizeof(unsigned int)); } ret = parse_insn(dev, insn, data, file); if (ret < 0) goto error; if (insn->insn & INSN_MASK_READ) { if (copy_to_user(insn->data, data, insn->n * sizeof(unsigned int))) { ret = -EFAULT; goto error; } } ret = insn->n; error: kfree(data); return ret; } static int __comedi_get_user_cmd(struct comedi_device *dev, struct comedi_cmd *cmd) { struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (cmd->subdev >= dev->n_subdevices) { dev_dbg(dev->class_dev, "%d no such subdevice\n", cmd->subdev); return -ENODEV; } s = &dev->subdevices[cmd->subdev]; if (s->type == COMEDI_SUBD_UNUSED) { dev_dbg(dev->class_dev, "%d not valid subdevice\n", cmd->subdev); return -EIO; } if (!s->do_cmd || !s->do_cmdtest || !s->async) { dev_dbg(dev->class_dev, "subdevice %d does not support commands\n", cmd->subdev); return -EIO; } /* make sure channel/gain list isn't too long */ if (cmd->chanlist_len > s->len_chanlist) { dev_dbg(dev->class_dev, "channel/gain list too long %d > %d\n", cmd->chanlist_len, s->len_chanlist); return -EINVAL; } /* * Set the CMDF_WRITE flag to the correct state if the subdevice * supports only "read" commands or only "write" commands. */ switch (s->subdev_flags & (SDF_CMD_READ | SDF_CMD_WRITE)) { case SDF_CMD_READ: cmd->flags &= ~CMDF_WRITE; break; case SDF_CMD_WRITE: cmd->flags |= CMDF_WRITE; break; default: break; } return 0; } static int __comedi_get_user_chanlist(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int __user *user_chanlist, struct comedi_cmd *cmd) { unsigned int *chanlist; int ret; lockdep_assert_held(&dev->mutex); cmd->chanlist = NULL; chanlist = memdup_array_user(user_chanlist, cmd->chanlist_len, sizeof(unsigned int)); if (IS_ERR(chanlist)) return PTR_ERR(chanlist); /* make sure each element in channel/gain list is valid */ ret = comedi_check_chanlist(s, cmd->chanlist_len, chanlist); if (ret < 0) { kfree(chanlist); return ret; } cmd->chanlist = chanlist; return 0; } /* * COMEDI_CMD ioctl * asynchronous acquisition command set-up * * arg: * pointer to comedi_cmd structure * * reads: * comedi_cmd structure * channel/range list from cmd->chanlist pointer * * writes: * possibly modified comedi_cmd structure (when -EAGAIN returned) */ static int do_cmd_ioctl(struct comedi_device *dev, struct comedi_cmd *cmd, bool *copy, void *file) { struct comedi_subdevice *s; struct comedi_async *async; unsigned int __user *user_chanlist; int ret; lockdep_assert_held(&dev->mutex); /* do some simple cmd validation */ ret = __comedi_get_user_cmd(dev, cmd); if (ret) return ret; /* save user's chanlist pointer so it can be restored later */ user_chanlist = (unsigned int __user *)cmd->chanlist; s = &dev->subdevices[cmd->subdev]; async = s->async; /* are we locked? (ioctl lock) */ if (s->lock && s->lock != file) { dev_dbg(dev->class_dev, "subdevice locked\n"); return -EACCES; } /* are we busy? */ if (s->busy) { dev_dbg(dev->class_dev, "subdevice busy\n"); return -EBUSY; } /* make sure channel/gain list isn't too short */ if (cmd->chanlist_len < 1) { dev_dbg(dev->class_dev, "channel/gain list too short %u < 1\n", cmd->chanlist_len); return -EINVAL; } async->cmd = *cmd; async->cmd.data = NULL; /* load channel/gain list */ ret = __comedi_get_user_chanlist(dev, s, user_chanlist, &async->cmd); if (ret) goto cleanup; ret = s->do_cmdtest(dev, s, &async->cmd); if (async->cmd.flags & CMDF_BOGUS || ret) { dev_dbg(dev->class_dev, "test returned %d\n", ret); *cmd = async->cmd; /* restore chanlist pointer before copying back */ cmd->chanlist = (unsigned int __force *)user_chanlist; cmd->data = NULL; *copy = true; ret = -EAGAIN; goto cleanup; } if (!async->prealloc_bufsz) { ret = -ENOMEM; dev_dbg(dev->class_dev, "no buffer (?)\n"); goto cleanup; } comedi_buf_reset(s); async->cb_mask = COMEDI_CB_BLOCK | COMEDI_CB_CANCEL_MASK; if (async->cmd.flags & CMDF_WAKE_EOS) async->cb_mask |= COMEDI_CB_EOS; comedi_update_subdevice_runflags(s, COMEDI_SRF_BUSY_MASK, COMEDI_SRF_RUNNING); /* * Set s->busy _after_ setting COMEDI_SRF_RUNNING flag to avoid * race with comedi_read() or comedi_write(). */ s->busy = file; ret = s->do_cmd(dev, s); if (ret == 0) return 0; cleanup: do_become_nonbusy(dev, s); return ret; } /* * COMEDI_CMDTEST ioctl * asynchronous acquisition command testing * * arg: * pointer to comedi_cmd structure * * reads: * comedi_cmd structure * channel/range list from cmd->chanlist pointer * * writes: * possibly modified comedi_cmd structure */ static int do_cmdtest_ioctl(struct comedi_device *dev, struct comedi_cmd *cmd, bool *copy, void *file) { struct comedi_subdevice *s; unsigned int __user *user_chanlist; int ret; lockdep_assert_held(&dev->mutex); /* do some simple cmd validation */ ret = __comedi_get_user_cmd(dev, cmd); if (ret) return ret; /* save user's chanlist pointer so it can be restored later */ user_chanlist = (unsigned int __user *)cmd->chanlist; s = &dev->subdevices[cmd->subdev]; /* user_chanlist can be NULL for COMEDI_CMDTEST ioctl */ if (user_chanlist) { /* load channel/gain list */ ret = __comedi_get_user_chanlist(dev, s, user_chanlist, cmd); if (ret) return ret; } ret = s->do_cmdtest(dev, s, cmd); kfree(cmd->chanlist); /* free kernel copy of user chanlist */ /* restore chanlist pointer before copying back */ cmd->chanlist = (unsigned int __force *)user_chanlist; *copy = true; return ret; } /* * COMEDI_LOCK ioctl * lock subdevice * * arg: * subdevice number * * reads: * nothing * * writes: * nothing */ static int do_lock_ioctl(struct comedi_device *dev, unsigned long arg, void *file) { int ret = 0; unsigned long flags; struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (arg >= dev->n_subdevices) return -EINVAL; s = &dev->subdevices[arg]; spin_lock_irqsave(&s->spin_lock, flags); if (s->busy || s->lock) ret = -EBUSY; else s->lock = file; spin_unlock_irqrestore(&s->spin_lock, flags); return ret; } /* * COMEDI_UNLOCK ioctl * unlock subdevice * * arg: * subdevice number * * reads: * nothing * * writes: * nothing */ static int do_unlock_ioctl(struct comedi_device *dev, unsigned long arg, void *file) { struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (arg >= dev->n_subdevices) return -EINVAL; s = &dev->subdevices[arg]; if (s->busy) return -EBUSY; if (s->lock && s->lock != file) return -EACCES; if (s->lock == file) s->lock = NULL; return 0; } /* * COMEDI_CANCEL ioctl * cancel asynchronous acquisition * * arg: * subdevice number * * reads: * nothing * * writes: * nothing */ static int do_cancel_ioctl(struct comedi_device *dev, unsigned long arg, void *file) { struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (arg >= dev->n_subdevices) return -EINVAL; s = &dev->subdevices[arg]; if (!s->async) return -EINVAL; if (!s->busy) return 0; if (s->busy != file) return -EBUSY; return do_cancel(dev, s); } /* * COMEDI_POLL ioctl * instructs driver to synchronize buffers * * arg: * subdevice number * * reads: * nothing * * writes: * nothing */ static int do_poll_ioctl(struct comedi_device *dev, unsigned long arg, void *file) { struct comedi_subdevice *s; lockdep_assert_held(&dev->mutex); if (arg >= dev->n_subdevices) return -EINVAL; s = &dev->subdevices[arg]; if (!s->busy) return 0; if (s->busy != file) return -EBUSY; if (s->poll) return s->poll(dev, s); return -EINVAL; } /* * COMEDI_SETRSUBD ioctl * sets the current "read" subdevice on a per-file basis * * arg: * subdevice number * * reads: * nothing * * writes: * nothing */ static int do_setrsubd_ioctl(struct comedi_device *dev, unsigned long arg, struct file *file) { struct comedi_file *cfp = file->private_data; struct comedi_subdevice *s_old, *s_new; lockdep_assert_held(&dev->mutex); if (arg >= dev->n_subdevices) return -EINVAL; s_new = &dev->subdevices[arg]; s_old = comedi_file_read_subdevice(file); if (s_old == s_new) return 0; /* no change */ if (!(s_new->subdev_flags & SDF_CMD_READ)) return -EINVAL; /* * Check the file isn't still busy handling a "read" command on the * old subdevice (if any). */ if (s_old && s_old->busy == file && s_old->async && !(s_old->async->cmd.flags & CMDF_WRITE)) return -EBUSY; WRITE_ONCE(cfp->read_subdev, s_new); return 0; } /* * COMEDI_SETWSUBD ioctl * sets the current "write" subdevice on a per-file basis * * arg: * subdevice number * * reads: * nothing * * writes: * nothing */ static int do_setwsubd_ioctl(struct comedi_device *dev, unsigned long arg, struct file *file) { struct comedi_file *cfp = file->private_data; struct comedi_subdevice *s_old, *s_new; lockdep_assert_held(&dev->mutex); if (arg >= dev->n_subdevices) return -EINVAL; s_new = &dev->subdevices[arg]; s_old = comedi_file_write_subdevice(file); if (s_old == s_new) return 0; /* no change */ if (!(s_new->subdev_flags & SDF_CMD_WRITE)) return -EINVAL; /* * Check the file isn't still busy handling a "write" command on the * old subdevice (if any). */ if (s_old && s_old->busy == file && s_old->async && (s_old->async->cmd.flags & CMDF_WRITE)) return -EBUSY; WRITE_ONCE(cfp->write_subdev, s_new); return 0; } static long comedi_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { unsigned int minor = iminor(file_inode(file)); struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; int rc; mutex_lock(&dev->mutex); /* * Device config is special, because it must work on * an unconfigured device. */ if (cmd == COMEDI_DEVCONFIG) { if (minor >= COMEDI_NUM_BOARD_MINORS) { /* Device config not appropriate on non-board minors. */ rc = -ENOTTY; goto done; } rc = do_devconfig_ioctl(dev, (struct comedi_devconfig __user *)arg); if (rc == 0) { if (arg == 0 && dev->minor >= comedi_num_legacy_minors) { /* * Successfully unconfigured a dynamically * allocated device. Try and remove it. */ if (comedi_clear_board_dev(dev)) { mutex_unlock(&dev->mutex); comedi_free_board_dev(dev); return rc; } } } goto done; } if (!dev->attached) { dev_dbg(dev->class_dev, "no driver attached\n"); rc = -ENODEV; goto done; } switch (cmd) { case COMEDI_BUFCONFIG: rc = do_bufconfig_ioctl(dev, (struct comedi_bufconfig __user *)arg); break; case COMEDI_DEVINFO: rc = do_devinfo_ioctl(dev, (struct comedi_devinfo __user *)arg, file); break; case COMEDI_SUBDINFO: rc = do_subdinfo_ioctl(dev, (struct comedi_subdinfo __user *)arg, file); break; case COMEDI_CHANINFO: { struct comedi_chaninfo it; if (copy_from_user(&it, (void __user *)arg, sizeof(it))) rc = -EFAULT; else rc = do_chaninfo_ioctl(dev, &it); break; } case COMEDI_RANGEINFO: { struct comedi_rangeinfo it; if (copy_from_user(&it, (void __user *)arg, sizeof(it))) rc = -EFAULT; else rc = do_rangeinfo_ioctl(dev, &it); break; } case COMEDI_BUFINFO: rc = do_bufinfo_ioctl(dev, (struct comedi_bufinfo __user *)arg, file); break; case COMEDI_LOCK: rc = do_lock_ioctl(dev, arg, file); break; case COMEDI_UNLOCK: rc = do_unlock_ioctl(dev, arg, file); break; case COMEDI_CANCEL: rc = do_cancel_ioctl(dev, arg, file); break; case COMEDI_CMD: { struct comedi_cmd cmd; bool copy = false; if (copy_from_user(&cmd, (void __user *)arg, sizeof(cmd))) { rc = -EFAULT; break; } rc = do_cmd_ioctl(dev, &cmd, ©, file); if (copy && copy_to_user((void __user *)arg, &cmd, sizeof(cmd))) rc = -EFAULT; break; } case COMEDI_CMDTEST: { struct comedi_cmd cmd; bool copy = false; if (copy_from_user(&cmd, (void __user *)arg, sizeof(cmd))) { rc = -EFAULT; break; } rc = do_cmdtest_ioctl(dev, &cmd, ©, file); if (copy && copy_to_user((void __user *)arg, &cmd, sizeof(cmd))) rc = -EFAULT; break; } case COMEDI_INSNLIST: { struct comedi_insnlist insnlist; struct comedi_insn *insns = NULL; if (copy_from_user(&insnlist, (void __user *)arg, sizeof(insnlist))) { rc = -EFAULT; break; } rc = check_insnlist_len(dev, insnlist.n_insns); if (rc) break; insns = kcalloc(insnlist.n_insns, sizeof(*insns), GFP_KERNEL); if (!insns) { rc = -ENOMEM; break; } if (copy_from_user(insns, insnlist.insns, sizeof(*insns) * insnlist.n_insns)) { rc = -EFAULT; kfree(insns); break; } rc = do_insnlist_ioctl(dev, insns, insnlist.n_insns, file); kfree(insns); break; } case COMEDI_INSN: { struct comedi_insn insn; if (copy_from_user(&insn, (void __user *)arg, sizeof(insn))) rc = -EFAULT; else rc = do_insn_ioctl(dev, &insn, file); break; } case COMEDI_POLL: rc = do_poll_ioctl(dev, arg, file); break; case COMEDI_SETRSUBD: rc = do_setrsubd_ioctl(dev, arg, file); break; case COMEDI_SETWSUBD: rc = do_setwsubd_ioctl(dev, arg, file); break; default: rc = -ENOTTY; break; } done: mutex_unlock(&dev->mutex); return rc; } static void comedi_vm_open(struct vm_area_struct *area) { struct comedi_buf_map *bm; bm = area->vm_private_data; comedi_buf_map_get(bm); } static void comedi_vm_close(struct vm_area_struct *area) { struct comedi_buf_map *bm; bm = area->vm_private_data; comedi_buf_map_put(bm); } static int comedi_vm_access(struct vm_area_struct *vma, unsigned long addr, void *buf, int len, int write) { struct comedi_buf_map *bm = vma->vm_private_data; unsigned long offset = addr - vma->vm_start + (vma->vm_pgoff << PAGE_SHIFT); if (len < 0) return -EINVAL; if (len > vma->vm_end - addr) len = vma->vm_end - addr; return comedi_buf_map_access(bm, offset, buf, len, write); } static const struct vm_operations_struct comedi_vm_ops = { .open = comedi_vm_open, .close = comedi_vm_close, .access = comedi_vm_access, }; static int comedi_mmap(struct file *file, struct vm_area_struct *vma) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi_subdevice *s; struct comedi_async *async; struct comedi_buf_map *bm = NULL; struct comedi_buf_page *buf; unsigned long start = vma->vm_start; unsigned long size; int n_pages; int i; int retval = 0; /* * 'trylock' avoids circular dependency with current->mm->mmap_lock * and down-reading &dev->attach_lock should normally succeed without * contention unless the device is in the process of being attached * or detached. */ if (!down_read_trylock(&dev->attach_lock)) return -EAGAIN; if (!dev->attached) { dev_dbg(dev->class_dev, "no driver attached\n"); retval = -ENODEV; goto done; } if (vma->vm_flags & VM_WRITE) s = comedi_file_write_subdevice(file); else s = comedi_file_read_subdevice(file); if (!s) { retval = -EINVAL; goto done; } async = s->async; if (!async) { retval = -EINVAL; goto done; } if (vma->vm_pgoff != 0) { dev_dbg(dev->class_dev, "mmap() offset must be 0.\n"); retval = -EINVAL; goto done; } size = vma->vm_end - vma->vm_start; if (size > async->prealloc_bufsz) { retval = -EFAULT; goto done; } if (offset_in_page(size)) { retval = -EFAULT; goto done; } n_pages = vma_pages(vma); /* get reference to current buf map (if any) */ bm = comedi_buf_map_from_subdev_get(s); if (!bm || n_pages > bm->n_pages) { retval = -EINVAL; goto done; } if (bm->dma_dir != DMA_NONE) { unsigned long vm_start = vma->vm_start; unsigned long vm_end = vma->vm_end; /* * Buffer pages are not contiguous, so temporarily modify VMA * start and end addresses for each buffer page. */ for (i = 0; i < n_pages; ++i) { buf = &bm->page_list[i]; vma->vm_start = start; vma->vm_end = start + PAGE_SIZE; retval = dma_mmap_coherent(bm->dma_hw_dev, vma, buf->virt_addr, buf->dma_addr, PAGE_SIZE); if (retval) break; start += PAGE_SIZE; } vma->vm_start = vm_start; vma->vm_end = vm_end; } else { for (i = 0; i < n_pages; ++i) { unsigned long pfn; buf = &bm->page_list[i]; pfn = page_to_pfn(virt_to_page(buf->virt_addr)); retval = remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED); if (retval) break; start += PAGE_SIZE; } } #ifdef CONFIG_MMU /* * Leaving behind a partial mapping of a buffer we're about to drop is * unsafe, see remap_pfn_range_notrack(). We need to zap the range * here ourselves instead of relying on the automatic zapping in * remap_pfn_range() because we call remap_pfn_range() in a loop. */ if (retval) zap_vma_ptes(vma, vma->vm_start, size); #endif if (retval == 0) { vma->vm_ops = &comedi_vm_ops; vma->vm_private_data = bm; vma->vm_ops->open(vma); } done: up_read(&dev->attach_lock); comedi_buf_map_put(bm); /* put reference to buf map - okay if NULL */ return retval; } static __poll_t comedi_poll(struct file *file, poll_table *wait) { __poll_t mask = 0; struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi_subdevice *s, *s_read; down_read(&dev->attach_lock); if (!dev->attached) { dev_dbg(dev->class_dev, "no driver attached\n"); goto done; } s = comedi_file_read_subdevice(file); s_read = s; if (s && s->async) { poll_wait(file, &s->async->wait_head, wait); if (s->busy != file || !comedi_is_subdevice_running(s) || (s->async->cmd.flags & CMDF_WRITE) || comedi_buf_read_n_available(s) > 0) mask |= EPOLLIN | EPOLLRDNORM; } s = comedi_file_write_subdevice(file); if (s && s->async) { unsigned int bps = comedi_bytes_per_sample(s); if (s != s_read) poll_wait(file, &s->async->wait_head, wait); if (s->busy != file || !comedi_is_subdevice_running(s) || !(s->async->cmd.flags & CMDF_WRITE) || comedi_buf_write_n_available(s) >= bps) mask |= EPOLLOUT | EPOLLWRNORM; } done: up_read(&dev->attach_lock); return mask; } static unsigned int comedi_buf_copy_to_user(struct comedi_subdevice *s, void __user *dest, unsigned int src_offset, unsigned int n) { struct comedi_buf_map *bm = s->async->buf_map; struct comedi_buf_page *buf_page_list = bm->page_list; unsigned int page = src_offset >> PAGE_SHIFT; unsigned int offset = offset_in_page(src_offset); while (n) { unsigned int copy_amount = min(n, PAGE_SIZE - offset); unsigned int uncopied; uncopied = copy_to_user(dest, buf_page_list[page].virt_addr + offset, copy_amount); copy_amount -= uncopied; n -= copy_amount; if (uncopied) break; dest += copy_amount; page++; if (page == bm->n_pages) page = 0; /* buffer wraparound */ offset = 0; } return n; } static unsigned int comedi_buf_copy_from_user(struct comedi_subdevice *s, unsigned int dst_offset, const void __user *src, unsigned int n) { struct comedi_buf_map *bm = s->async->buf_map; struct comedi_buf_page *buf_page_list = bm->page_list; unsigned int page = dst_offset >> PAGE_SHIFT; unsigned int offset = offset_in_page(dst_offset); while (n) { unsigned int copy_amount = min(n, PAGE_SIZE - offset); unsigned int uncopied; uncopied = copy_from_user(buf_page_list[page].virt_addr + offset, src, copy_amount); copy_amount -= uncopied; n -= copy_amount; if (uncopied) break; src += copy_amount; page++; if (page == bm->n_pages) page = 0; /* buffer wraparound */ offset = 0; } return n; } static ssize_t comedi_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *offset) { struct comedi_subdevice *s; struct comedi_async *async; unsigned int n, m; ssize_t count = 0; int retval = 0; DECLARE_WAITQUEUE(wait, current); struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; bool become_nonbusy = false; bool attach_locked; unsigned int old_detach_count; /* Protect against device detachment during operation. */ down_read(&dev->attach_lock); attach_locked = true; old_detach_count = dev->detach_count; if (!dev->attached) { dev_dbg(dev->class_dev, "no driver attached\n"); retval = -ENODEV; goto out; } s = comedi_file_write_subdevice(file); if (!s || !s->async) { retval = -EIO; goto out; } async = s->async; if (s->busy != file || !(async->cmd.flags & CMDF_WRITE)) { retval = -EINVAL; goto out; } add_wait_queue(&async->wait_head, &wait); while (count == 0 && !retval) { unsigned int runflags; set_current_state(TASK_INTERRUPTIBLE); runflags = comedi_get_subdevice_runflags(s); if (!comedi_is_runflags_running(runflags)) { if (comedi_is_runflags_in_error(runflags)) retval = -EPIPE; if (retval || nbytes) become_nonbusy = true; break; } if (nbytes == 0) break; /* Allocate all free buffer space. */ comedi_buf_write_alloc(s, async->prealloc_bufsz); m = comedi_buf_write_n_allocated(s); n = min_t(size_t, m, nbytes); if (n == 0) { if (file->f_flags & O_NONBLOCK) { retval = -EAGAIN; break; } schedule(); if (signal_pending(current)) { retval = -ERESTARTSYS; break; } if (s->busy != file || !(async->cmd.flags & CMDF_WRITE)) { retval = -EINVAL; break; } continue; } set_current_state(TASK_RUNNING); m = comedi_buf_copy_from_user(s, async->buf_write_ptr, buf, n); if (m) { n -= m; retval = -EFAULT; } comedi_buf_write_free(s, n); count += n; nbytes -= n; buf += n; } remove_wait_queue(&async->wait_head, &wait); set_current_state(TASK_RUNNING); if (become_nonbusy && count == 0) { struct comedi_subdevice *new_s; /* * To avoid deadlock, cannot acquire dev->mutex * while dev->attach_lock is held. */ up_read(&dev->attach_lock); attach_locked = false; mutex_lock(&dev->mutex); /* * Check device hasn't become detached behind our back. * Checking dev->detach_count is unchanged ought to be * sufficient (unless there have been 2**32 detaches in the * meantime!), but check the subdevice pointer as well just in * case. * * Also check the subdevice is still in a suitable state to * become non-busy in case it changed behind our back. */ new_s = comedi_file_write_subdevice(file); if (dev->attached && old_detach_count == dev->detach_count && s == new_s && new_s->async == async && s->busy == file && (async->cmd.flags & CMDF_WRITE) && !comedi_is_subdevice_running(s)) do_become_nonbusy(dev, s); mutex_unlock(&dev->mutex); } out: if (attach_locked) up_read(&dev->attach_lock); return count ? count : retval; } static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes, loff_t *offset) { struct comedi_subdevice *s; struct comedi_async *async; unsigned int n, m; ssize_t count = 0; int retval = 0; DECLARE_WAITQUEUE(wait, current); struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; unsigned int old_detach_count; bool become_nonbusy = false; bool attach_locked; /* Protect against device detachment during operation. */ down_read(&dev->attach_lock); attach_locked = true; old_detach_count = dev->detach_count; if (!dev->attached) { dev_dbg(dev->class_dev, "no driver attached\n"); retval = -ENODEV; goto out; } s = comedi_file_read_subdevice(file); if (!s || !s->async) { retval = -EIO; goto out; } async = s->async; if (s->busy != file || (async->cmd.flags & CMDF_WRITE)) { retval = -EINVAL; goto out; } add_wait_queue(&async->wait_head, &wait); while (count == 0 && !retval) { set_current_state(TASK_INTERRUPTIBLE); m = comedi_buf_read_n_available(s); n = min_t(size_t, m, nbytes); if (n == 0) { unsigned int runflags = comedi_get_subdevice_runflags(s); if (!comedi_is_runflags_running(runflags)) { if (comedi_is_runflags_in_error(runflags)) retval = -EPIPE; if (retval || nbytes) become_nonbusy = true; break; } if (nbytes == 0) break; if (file->f_flags & O_NONBLOCK) { retval = -EAGAIN; break; } schedule(); if (signal_pending(current)) { retval = -ERESTARTSYS; break; } if (s->busy != file || (async->cmd.flags & CMDF_WRITE)) { retval = -EINVAL; break; } continue; } set_current_state(TASK_RUNNING); m = comedi_buf_copy_to_user(s, buf, async->buf_read_ptr, n); if (m) { n -= m; retval = -EFAULT; } comedi_buf_read_alloc(s, n); comedi_buf_read_free(s, n); count += n; nbytes -= n; buf += n; } remove_wait_queue(&async->wait_head, &wait); set_current_state(TASK_RUNNING); if (become_nonbusy && count == 0) { struct comedi_subdevice *new_s; /* * To avoid deadlock, cannot acquire dev->mutex * while dev->attach_lock is held. */ up_read(&dev->attach_lock); attach_locked = false; mutex_lock(&dev->mutex); /* * Check device hasn't become detached behind our back. * Checking dev->detach_count is unchanged ought to be * sufficient (unless there have been 2**32 detaches in the * meantime!), but check the subdevice pointer as well just in * case. * * Also check the subdevice is still in a suitable state to * become non-busy in case it changed behind our back. */ new_s = comedi_file_read_subdevice(file); if (dev->attached && old_detach_count == dev->detach_count && s == new_s && new_s->async == async && s->busy == file && !(async->cmd.flags & CMDF_WRITE) && !comedi_is_subdevice_running(s) && comedi_buf_read_n_available(s) == 0) do_become_nonbusy(dev, s); mutex_unlock(&dev->mutex); } out: if (attach_locked) up_read(&dev->attach_lock); return count ? count : retval; } static int comedi_open(struct inode *inode, struct file *file) { const unsigned int minor = iminor(inode); struct comedi_file *cfp; struct comedi_device *dev = comedi_dev_get_from_minor(minor); int rc; if (!dev) { pr_debug("invalid minor number\n"); return -ENODEV; } cfp = kzalloc(sizeof(*cfp), GFP_KERNEL); if (!cfp) { comedi_dev_put(dev); return -ENOMEM; } cfp->dev = dev; mutex_lock(&dev->mutex); if (!dev->attached && !capable(CAP_SYS_ADMIN)) { dev_dbg(dev->class_dev, "not attached and not CAP_SYS_ADMIN\n"); rc = -ENODEV; goto out; } if (dev->attached && dev->use_count == 0) { if (!try_module_get(dev->driver->module)) { rc = -ENXIO; goto out; } if (dev->open) { rc = dev->open(dev); if (rc < 0) { module_put(dev->driver->module); goto out; } } } dev->use_count++; file->private_data = cfp; comedi_file_reset(file); rc = 0; out: mutex_unlock(&dev->mutex); if (rc) { comedi_dev_put(dev); kfree(cfp); } return rc; } static int comedi_fasync(int fd, struct file *file, int on) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; return fasync_helper(fd, file, on, &dev->async_queue); } static int comedi_close(struct inode *inode, struct file *file) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi_subdevice *s = NULL; int i; mutex_lock(&dev->mutex); if (dev->subdevices) { for (i = 0; i < dev->n_subdevices; i++) { s = &dev->subdevices[i]; if (s->busy == file) do_cancel(dev, s); if (s->lock == file) s->lock = NULL; } } if (dev->attached && dev->use_count == 1) { if (dev->close) dev->close(dev); module_put(dev->driver->module); } dev->use_count--; mutex_unlock(&dev->mutex); comedi_dev_put(dev); kfree(cfp); return 0; } #ifdef CONFIG_COMPAT #define COMEDI32_CHANINFO _IOR(CIO, 3, struct comedi32_chaninfo_struct) #define COMEDI32_RANGEINFO _IOR(CIO, 8, struct comedi32_rangeinfo_struct) /* * N.B. COMEDI32_CMD and COMEDI_CMD ought to use _IOWR, not _IOR. * It's too late to change it now, but it only affects the command number. */ #define COMEDI32_CMD _IOR(CIO, 9, struct comedi32_cmd_struct) /* * N.B. COMEDI32_CMDTEST and COMEDI_CMDTEST ought to use _IOWR, not _IOR. * It's too late to change it now, but it only affects the command number. */ #define COMEDI32_CMDTEST _IOR(CIO, 10, struct comedi32_cmd_struct) #define COMEDI32_INSNLIST _IOR(CIO, 11, struct comedi32_insnlist_struct) #define COMEDI32_INSN _IOR(CIO, 12, struct comedi32_insn_struct) struct comedi32_chaninfo_struct { unsigned int subdev; compat_uptr_t maxdata_list; /* 32-bit 'unsigned int *' */ compat_uptr_t flaglist; /* 32-bit 'unsigned int *' */ compat_uptr_t rangelist; /* 32-bit 'unsigned int *' */ unsigned int unused[4]; }; struct comedi32_rangeinfo_struct { unsigned int range_type; compat_uptr_t range_ptr; /* 32-bit 'void *' */ }; struct comedi32_cmd_struct { unsigned int subdev; unsigned int flags; unsigned int start_src; unsigned int start_arg; unsigned int scan_begin_src; unsigned int scan_begin_arg; unsigned int convert_src; unsigned int convert_arg; unsigned int scan_end_src; unsigned int scan_end_arg; unsigned int stop_src; unsigned int stop_arg; compat_uptr_t chanlist; /* 32-bit 'unsigned int *' */ unsigned int chanlist_len; compat_uptr_t data; /* 32-bit 'short *' */ unsigned int data_len; }; struct comedi32_insn_struct { unsigned int insn; unsigned int n; compat_uptr_t data; /* 32-bit 'unsigned int *' */ unsigned int subdev; unsigned int chanspec; unsigned int unused[3]; }; struct comedi32_insnlist_struct { unsigned int n_insns; compat_uptr_t insns; /* 32-bit 'struct comedi_insn *' */ }; /* Handle 32-bit COMEDI_CHANINFO ioctl. */ static int compat_chaninfo(struct file *file, unsigned long arg) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi32_chaninfo_struct chaninfo32; struct comedi_chaninfo chaninfo; int err; if (copy_from_user(&chaninfo32, compat_ptr(arg), sizeof(chaninfo32))) return -EFAULT; memset(&chaninfo, 0, sizeof(chaninfo)); chaninfo.subdev = chaninfo32.subdev; chaninfo.maxdata_list = compat_ptr(chaninfo32.maxdata_list); chaninfo.flaglist = compat_ptr(chaninfo32.flaglist); chaninfo.rangelist = compat_ptr(chaninfo32.rangelist); mutex_lock(&dev->mutex); err = do_chaninfo_ioctl(dev, &chaninfo); mutex_unlock(&dev->mutex); return err; } /* Handle 32-bit COMEDI_RANGEINFO ioctl. */ static int compat_rangeinfo(struct file *file, unsigned long arg) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi32_rangeinfo_struct rangeinfo32; struct comedi_rangeinfo rangeinfo; int err; if (copy_from_user(&rangeinfo32, compat_ptr(arg), sizeof(rangeinfo32))) return -EFAULT; memset(&rangeinfo, 0, sizeof(rangeinfo)); rangeinfo.range_type = rangeinfo32.range_type; rangeinfo.range_ptr = compat_ptr(rangeinfo32.range_ptr); mutex_lock(&dev->mutex); err = do_rangeinfo_ioctl(dev, &rangeinfo); mutex_unlock(&dev->mutex); return err; } /* Copy 32-bit cmd structure to native cmd structure. */ static int get_compat_cmd(struct comedi_cmd *cmd, struct comedi32_cmd_struct __user *cmd32) { struct comedi32_cmd_struct v32; if (copy_from_user(&v32, cmd32, sizeof(v32))) return -EFAULT; cmd->subdev = v32.subdev; cmd->flags = v32.flags; cmd->start_src = v32.start_src; cmd->start_arg = v32.start_arg; cmd->scan_begin_src = v32.scan_begin_src; cmd->scan_begin_arg = v32.scan_begin_arg; cmd->convert_src = v32.convert_src; cmd->convert_arg = v32.convert_arg; cmd->scan_end_src = v32.scan_end_src; cmd->scan_end_arg = v32.scan_end_arg; cmd->stop_src = v32.stop_src; cmd->stop_arg = v32.stop_arg; cmd->chanlist = (unsigned int __force *)compat_ptr(v32.chanlist); cmd->chanlist_len = v32.chanlist_len; cmd->data = compat_ptr(v32.data); cmd->data_len = v32.data_len; return 0; } /* Copy native cmd structure to 32-bit cmd structure. */ static int put_compat_cmd(struct comedi32_cmd_struct __user *cmd32, struct comedi_cmd *cmd) { struct comedi32_cmd_struct v32; memset(&v32, 0, sizeof(v32)); v32.subdev = cmd->subdev; v32.flags = cmd->flags; v32.start_src = cmd->start_src; v32.start_arg = cmd->start_arg; v32.scan_begin_src = cmd->scan_begin_src; v32.scan_begin_arg = cmd->scan_begin_arg; v32.convert_src = cmd->convert_src; v32.convert_arg = cmd->convert_arg; v32.scan_end_src = cmd->scan_end_src; v32.scan_end_arg = cmd->scan_end_arg; v32.stop_src = cmd->stop_src; v32.stop_arg = cmd->stop_arg; /* Assume chanlist pointer is unchanged. */ v32.chanlist = ptr_to_compat((unsigned int __user *)cmd->chanlist); v32.chanlist_len = cmd->chanlist_len; v32.data = ptr_to_compat(cmd->data); v32.data_len = cmd->data_len; if (copy_to_user(cmd32, &v32, sizeof(v32))) return -EFAULT; return 0; } /* Handle 32-bit COMEDI_CMD ioctl. */ static int compat_cmd(struct file *file, unsigned long arg) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi_cmd cmd; bool copy = false; int rc, err; rc = get_compat_cmd(&cmd, compat_ptr(arg)); if (rc) return rc; mutex_lock(&dev->mutex); rc = do_cmd_ioctl(dev, &cmd, ©, file); mutex_unlock(&dev->mutex); if (copy) { /* Special case: copy cmd back to user. */ err = put_compat_cmd(compat_ptr(arg), &cmd); if (err) rc = err; } return rc; } /* Handle 32-bit COMEDI_CMDTEST ioctl. */ static int compat_cmdtest(struct file *file, unsigned long arg) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi_cmd cmd; bool copy = false; int rc, err; rc = get_compat_cmd(&cmd, compat_ptr(arg)); if (rc) return rc; mutex_lock(&dev->mutex); rc = do_cmdtest_ioctl(dev, &cmd, ©, file); mutex_unlock(&dev->mutex); if (copy) { err = put_compat_cmd(compat_ptr(arg), &cmd); if (err) rc = err; } return rc; } /* Copy 32-bit insn structure to native insn structure. */ static int get_compat_insn(struct comedi_insn *insn, struct comedi32_insn_struct __user *insn32) { struct comedi32_insn_struct v32; /* Copy insn structure. Ignore the unused members. */ if (copy_from_user(&v32, insn32, sizeof(v32))) return -EFAULT; memset(insn, 0, sizeof(*insn)); insn->insn = v32.insn; insn->n = v32.n; insn->data = compat_ptr(v32.data); insn->subdev = v32.subdev; insn->chanspec = v32.chanspec; return 0; } /* Handle 32-bit COMEDI_INSNLIST ioctl. */ static int compat_insnlist(struct file *file, unsigned long arg) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi32_insnlist_struct insnlist32; struct comedi32_insn_struct __user *insn32; struct comedi_insn *insns; unsigned int n; int rc; if (copy_from_user(&insnlist32, compat_ptr(arg), sizeof(insnlist32))) return -EFAULT; rc = check_insnlist_len(dev, insnlist32.n_insns); if (rc) return rc; insns = kcalloc(insnlist32.n_insns, sizeof(*insns), GFP_KERNEL); if (!insns) return -ENOMEM; /* Copy insn structures. */ insn32 = compat_ptr(insnlist32.insns); for (n = 0; n < insnlist32.n_insns; n++) { rc = get_compat_insn(insns + n, insn32 + n); if (rc) { kfree(insns); return rc; } } mutex_lock(&dev->mutex); rc = do_insnlist_ioctl(dev, insns, insnlist32.n_insns, file); mutex_unlock(&dev->mutex); kfree(insns); return rc; } /* Handle 32-bit COMEDI_INSN ioctl. */ static int compat_insn(struct file *file, unsigned long arg) { struct comedi_file *cfp = file->private_data; struct comedi_device *dev = cfp->dev; struct comedi_insn insn; int rc; rc = get_compat_insn(&insn, (void __user *)arg); if (rc) return rc; mutex_lock(&dev->mutex); rc = do_insn_ioctl(dev, &insn, file); mutex_unlock(&dev->mutex); return rc; } /* * compat_ioctl file operation. * * Returns -ENOIOCTLCMD for unrecognised ioctl codes. */ static long comedi_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { int rc; switch (cmd) { case COMEDI_DEVCONFIG: case COMEDI_DEVINFO: case COMEDI_SUBDINFO: case COMEDI_BUFCONFIG: case COMEDI_BUFINFO: /* Just need to translate the pointer argument. */ arg = (unsigned long)compat_ptr(arg); rc = comedi_unlocked_ioctl(file, cmd, arg); break; case COMEDI_LOCK: case COMEDI_UNLOCK: case COMEDI_CANCEL: case COMEDI_POLL: case COMEDI_SETRSUBD: case COMEDI_SETWSUBD: /* No translation needed. */ rc = comedi_unlocked_ioctl(file, cmd, arg); break; case COMEDI32_CHANINFO: rc = compat_chaninfo(file, arg); break; case COMEDI32_RANGEINFO: rc = compat_rangeinfo(file, arg); break; case COMEDI32_CMD: rc = compat_cmd(file, arg); break; case COMEDI32_CMDTEST: rc = compat_cmdtest(file, arg); break; case COMEDI32_INSNLIST: rc = compat_insnlist(file, arg); break; case COMEDI32_INSN: rc = compat_insn(file, arg); break; default: rc = -ENOIOCTLCMD; break; } return rc; } #else #define comedi_compat_ioctl NULL #endif static const struct file_operations comedi_fops = { .owner = THIS_MODULE, .unlocked_ioctl = comedi_unlocked_ioctl, .compat_ioctl = comedi_compat_ioctl, .open = comedi_open, .release = comedi_close, .read = comedi_read, .write = comedi_write, .mmap = comedi_mmap, .poll = comedi_poll, .fasync = comedi_fasync, .llseek = noop_llseek, }; /** * comedi_event() - Handle events for asynchronous COMEDI command * @dev: COMEDI device. * @s: COMEDI subdevice. * Context: in_interrupt() (usually), @s->spin_lock spin-lock not held. * * If an asynchronous COMEDI command is active on the subdevice, process * any %COMEDI_CB_... event flags that have been set, usually by an * interrupt handler. These may change the run state of the asynchronous * command, wake a task, and/or send a %SIGIO signal. */ void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s) { struct comedi_async *async = s->async; unsigned int events; int si_code = 0; unsigned long flags; spin_lock_irqsave(&s->spin_lock, flags); events = async->events; async->events = 0; if (!__comedi_is_subdevice_running(s)) { spin_unlock_irqrestore(&s->spin_lock, flags); return; } if (events & COMEDI_CB_CANCEL_MASK) __comedi_clear_subdevice_runflags(s, COMEDI_SRF_RUNNING); /* * Remember if an error event has occurred, so an error can be * returned the next time the user does a read() or write(). */ if (events & COMEDI_CB_ERROR_MASK) __comedi_set_subdevice_runflags(s, COMEDI_SRF_ERROR); if (async->cb_mask & events) { wake_up_interruptible(&async->wait_head); si_code = async->cmd.flags & CMDF_WRITE ? POLL_OUT : POLL_IN; } spin_unlock_irqrestore(&s->spin_lock, flags); if (si_code) kill_fasync(&dev->async_queue, SIGIO, si_code); } EXPORT_SYMBOL_GPL(comedi_event); /* Note: the ->mutex is pre-locked on successful return */ struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device) { struct comedi_device *dev; struct device *csdev; unsigned int i; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return ERR_PTR(-ENOMEM); comedi_device_init(dev); comedi_set_hw_dev(dev, hardware_device); mutex_lock(&dev->mutex); mutex_lock(&comedi_board_minor_table_lock); for (i = hardware_device ? comedi_num_legacy_minors : 0; i < COMEDI_NUM_BOARD_MINORS; ++i) { if (!comedi_board_minor_table[i]) { comedi_board_minor_table[i] = dev; break; } } mutex_unlock(&comedi_board_minor_table_lock); if (i == COMEDI_NUM_BOARD_MINORS) { mutex_unlock(&dev->mutex); comedi_device_cleanup(dev); comedi_dev_put(dev); dev_err(hardware_device, "ran out of minor numbers for board device files\n"); return ERR_PTR(-EBUSY); } dev->minor = i; csdev = device_create(&comedi_class, hardware_device, MKDEV(COMEDI_MAJOR, i), NULL, "comedi%i", i); if (!IS_ERR(csdev)) dev->class_dev = get_device(csdev); /* Note: dev->mutex needs to be unlocked by the caller. */ return dev; } void comedi_release_hardware_device(struct device *hardware_device) { int minor; struct comedi_device *dev; for (minor = comedi_num_legacy_minors; minor < COMEDI_NUM_BOARD_MINORS; minor++) { mutex_lock(&comedi_board_minor_table_lock); dev = comedi_board_minor_table[minor]; if (dev && dev->hw_dev == hardware_device) { comedi_board_minor_table[minor] = NULL; mutex_unlock(&comedi_board_minor_table_lock); comedi_free_board_dev(dev); break; } mutex_unlock(&comedi_board_minor_table_lock); } } int comedi_alloc_subdevice_minor(struct comedi_subdevice *s) { struct comedi_device *dev = s->device; struct device *csdev; unsigned int i; mutex_lock(&comedi_subdevice_minor_table_lock); for (i = 0; i < COMEDI_NUM_SUBDEVICE_MINORS; ++i) { if (!comedi_subdevice_minor_table[i]) { comedi_subdevice_minor_table[i] = s; break; } } mutex_unlock(&comedi_subdevice_minor_table_lock); if (i == COMEDI_NUM_SUBDEVICE_MINORS) { dev_err(dev->class_dev, "ran out of minor numbers for subdevice files\n"); return -EBUSY; } i += COMEDI_NUM_BOARD_MINORS; s->minor = i; csdev = device_create(&comedi_class, dev->class_dev, MKDEV(COMEDI_MAJOR, i), NULL, "comedi%i_subd%i", dev->minor, s->index); if (!IS_ERR(csdev)) s->class_dev = csdev; return 0; } void comedi_free_subdevice_minor(struct comedi_subdevice *s) { unsigned int i; if (!s) return; if (s->minor < COMEDI_NUM_BOARD_MINORS || s->minor >= COMEDI_NUM_MINORS) return; i = s->minor - COMEDI_NUM_BOARD_MINORS; mutex_lock(&comedi_subdevice_minor_table_lock); if (s == comedi_subdevice_minor_table[i]) comedi_subdevice_minor_table[i] = NULL; mutex_unlock(&comedi_subdevice_minor_table_lock); if (s->class_dev) { device_destroy(&comedi_class, MKDEV(COMEDI_MAJOR, s->minor)); s->class_dev = NULL; } } static void comedi_cleanup_board_minors(void) { struct comedi_device *dev; unsigned int i; for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) { dev = comedi_clear_board_minor(i); comedi_free_board_dev(dev); } } static int __init comedi_init(void) { int i; int retval; pr_info("version " COMEDI_RELEASE " - http://www.comedi.org\n"); if (comedi_num_legacy_minors > COMEDI_NUM_BOARD_MINORS) { pr_err("invalid value for module parameter \"comedi_num_legacy_minors\". Valid values are 0 through %i.\n", COMEDI_NUM_BOARD_MINORS); return -EINVAL; } retval = register_chrdev_region(MKDEV(COMEDI_MAJOR, 0), COMEDI_NUM_MINORS, "comedi"); if (retval) return retval; cdev_init(&comedi_cdev, &comedi_fops); comedi_cdev.owner = THIS_MODULE; retval = kobject_set_name(&comedi_cdev.kobj, "comedi"); if (retval) goto out_unregister_chrdev_region; retval = cdev_add(&comedi_cdev, MKDEV(COMEDI_MAJOR, 0), COMEDI_NUM_MINORS); if (retval) goto out_unregister_chrdev_region; retval = class_register(&comedi_class); if (retval) { pr_err("failed to create class\n"); goto out_cdev_del; } /* create devices files for legacy/manual use */ for (i = 0; i < comedi_num_legacy_minors; i++) { struct comedi_device *dev; dev = comedi_alloc_board_minor(NULL); if (IS_ERR(dev)) { retval = PTR_ERR(dev); goto out_cleanup_board_minors; } /* comedi_alloc_board_minor() locked the mutex */ lockdep_assert_held(&dev->mutex); mutex_unlock(&dev->mutex); } /* XXX requires /proc interface */ comedi_proc_init(); return 0; out_cleanup_board_minors: comedi_cleanup_board_minors(); class_unregister(&comedi_class); out_cdev_del: cdev_del(&comedi_cdev); out_unregister_chrdev_region: unregister_chrdev_region(MKDEV(COMEDI_MAJOR, 0), COMEDI_NUM_MINORS); return retval; } module_init(comedi_init); static void __exit comedi_cleanup(void) { comedi_cleanup_board_minors(); class_unregister(&comedi_class); cdev_del(&comedi_cdev); unregister_chrdev_region(MKDEV(COMEDI_MAJOR, 0), COMEDI_NUM_MINORS); comedi_proc_cleanup(); } module_exit(comedi_cleanup); MODULE_AUTHOR("https://www.comedi.org"); MODULE_DESCRIPTION("Comedi core module"); MODULE_LICENSE("GPL"); |
| 135 60 104 105 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 | // SPDX-License-Identifier: GPL-2.0 /* * USB Serial Converter stuff * * Copyright (C) 1999 - 2012 * Greg Kroah-Hartman (greg@kroah.com) */ #ifndef __LINUX_USB_SERIAL_H #define __LINUX_USB_SERIAL_H #include <linux/kref.h> #include <linux/mutex.h> #include <linux/serial.h> #include <linux/kfifo.h> /* The maximum number of ports one device can grab at once */ #define MAX_NUM_PORTS 16 /* USB serial flags */ #define USB_SERIAL_WRITE_BUSY 0 #define USB_SERIAL_THROTTLED 1 /** * usb_serial_port: structure for the specific ports of a device. * @serial: pointer back to the struct usb_serial owner of this port. * @port: pointer to the corresponding tty_port for this port. * @lock: spinlock to grab when updating portions of this structure. * @minor: the minor number of the port * @port_number: the struct usb_serial port number of this port (starts at 0) * @interrupt_in_buffer: pointer to the interrupt in buffer for this port. * @interrupt_in_urb: pointer to the interrupt in struct urb for this port. * @interrupt_in_endpointAddress: endpoint address for the interrupt in pipe * for this port. * @interrupt_out_buffer: pointer to the interrupt out buffer for this port. * @interrupt_out_size: the size of the interrupt_out_buffer, in bytes. * @interrupt_out_urb: pointer to the interrupt out struct urb for this port. * @interrupt_out_endpointAddress: endpoint address for the interrupt out pipe * for this port. * @bulk_in_buffer: pointer to the bulk in buffer for this port. * @bulk_in_size: the size of the bulk_in_buffer, in bytes. * @read_urb: pointer to the bulk in struct urb for this port. * @bulk_in_endpointAddress: endpoint address for the bulk in pipe for this * port. * @bulk_in_buffers: pointers to the bulk in buffers for this port * @read_urbs: pointers to the bulk in urbs for this port * @read_urbs_free: status bitmap the for bulk in urbs * @bulk_out_buffer: pointer to the bulk out buffer for this port. * @bulk_out_size: the size of the bulk_out_buffer, in bytes. * @write_urb: pointer to the bulk out struct urb for this port. * @write_fifo: kfifo used to buffer outgoing data * @bulk_out_buffers: pointers to the bulk out buffers for this port * @write_urbs: pointers to the bulk out urbs for this port * @write_urbs_free: status bitmap the for bulk out urbs * @icount: interrupt counters * @tx_bytes: number of bytes currently in host stack queues * @bulk_out_endpointAddress: endpoint address for the bulk out pipe for this * port. * @flags: usb serial port flags * @work: work queue entry for the line discipline waking up. * @dev: pointer to the serial device * * This structure is used by the usb-serial core and drivers for the specific * ports of a device. */ struct usb_serial_port { struct usb_serial *serial; struct tty_port port; spinlock_t lock; u32 minor; u8 port_number; unsigned char *interrupt_in_buffer; struct urb *interrupt_in_urb; __u8 interrupt_in_endpointAddress; unsigned char *interrupt_out_buffer; int interrupt_out_size; struct urb *interrupt_out_urb; __u8 interrupt_out_endpointAddress; unsigned char *bulk_in_buffer; int bulk_in_size; struct urb *read_urb; __u8 bulk_in_endpointAddress; unsigned char *bulk_in_buffers[2]; struct urb *read_urbs[2]; unsigned long read_urbs_free; unsigned char *bulk_out_buffer; int bulk_out_size; struct urb *write_urb; struct kfifo write_fifo; unsigned char *bulk_out_buffers[2]; struct urb *write_urbs[2]; unsigned long write_urbs_free; __u8 bulk_out_endpointAddress; struct async_icount icount; int tx_bytes; unsigned long flags; struct work_struct work; unsigned long sysrq; /* sysrq timeout */ struct device dev; }; #define to_usb_serial_port(d) container_of(d, struct usb_serial_port, dev) /* get and set the port private data pointer helper functions */ static inline void *usb_get_serial_port_data(struct usb_serial_port *port) { return dev_get_drvdata(&port->dev); } static inline void usb_set_serial_port_data(struct usb_serial_port *port, void *data) { dev_set_drvdata(&port->dev, data); } /** * usb_serial - structure used by the usb-serial core for a device * @dev: pointer to the struct usb_device for this device * @type: pointer to the struct usb_serial_driver for this device * @interface: pointer to the struct usb_interface for this device * @sibling: pointer to the struct usb_interface of any sibling interface * @suspend_count: number of suspended (sibling) interfaces * @num_ports: the number of ports this device has * @num_interrupt_in: number of interrupt in endpoints we have * @num_interrupt_out: number of interrupt out endpoints we have * @num_bulk_in: number of bulk in endpoints we have * @num_bulk_out: number of bulk out endpoints we have * @port: array of struct usb_serial_port structures for the different ports. * @private: place to put any driver specific information that is needed. The * usb-serial driver is required to manage this data, the usb-serial core * will not touch this. Use usb_get_serial_data() and * usb_set_serial_data() to access this. */ struct usb_serial { struct usb_device *dev; struct usb_serial_driver *type; struct usb_interface *interface; struct usb_interface *sibling; unsigned int suspend_count; unsigned char disconnected:1; unsigned char attached:1; unsigned char minors_reserved:1; unsigned char num_ports; unsigned char num_port_pointers; unsigned char num_interrupt_in; unsigned char num_interrupt_out; unsigned char num_bulk_in; unsigned char num_bulk_out; struct usb_serial_port *port[MAX_NUM_PORTS]; struct kref kref; struct mutex disc_mutex; void *private; }; #define to_usb_serial(d) container_of(d, struct usb_serial, kref) /* get and set the serial private data pointer helper functions */ static inline void *usb_get_serial_data(struct usb_serial *serial) { return serial->private; } static inline void usb_set_serial_data(struct usb_serial *serial, void *data) { serial->private = data; } struct usb_serial_endpoints { unsigned char num_bulk_in; unsigned char num_bulk_out; unsigned char num_interrupt_in; unsigned char num_interrupt_out; struct usb_endpoint_descriptor *bulk_in[MAX_NUM_PORTS]; struct usb_endpoint_descriptor *bulk_out[MAX_NUM_PORTS]; struct usb_endpoint_descriptor *interrupt_in[MAX_NUM_PORTS]; struct usb_endpoint_descriptor *interrupt_out[MAX_NUM_PORTS]; }; /** * usb_serial_driver - describes a usb serial driver * @description: pointer to a string that describes this driver. This string * used in the syslog messages when a device is inserted or removed. * @id_table: pointer to a list of usb_device_id structures that define all * of the devices this structure can support. * @num_ports: the number of different ports this device will have. * @num_bulk_in: minimum number of bulk-in endpoints * @num_bulk_out: minimum number of bulk-out endpoints * @num_interrupt_in: minimum number of interrupt-in endpoints * @num_interrupt_out: minimum number of interrupt-out endpoints * @bulk_in_size: minimum number of bytes to allocate for bulk-in buffer * (0 = end-point size) * @bulk_out_size: bytes to allocate for bulk-out buffer (0 = end-point size) * @calc_num_ports: pointer to a function to determine how many ports this * device has dynamically. It can also be used to verify the number of * endpoints or to modify the port-endpoint mapping. It will be called * after the probe() callback is called, but before attach(). * @probe: pointer to the driver's probe function. * This will be called when the device is inserted into the system, * but before the device has been fully initialized by the usb_serial * subsystem. Use this function to download any firmware to the device, * or any other early initialization that might be needed. * Return 0 to continue on with the initialization sequence. Anything * else will abort it. * @attach: pointer to the driver's attach function. * This will be called when the struct usb_serial structure is fully * set up. Do any local initialization of the device, or any private * memory structure allocation at this point in time. * @disconnect: pointer to the driver's disconnect function. This will be * called when the device is unplugged or unbound from the driver. * @release: pointer to the driver's release function. This will be called * when the usb_serial data structure is about to be destroyed. * @usb_driver: pointer to the struct usb_driver that controls this * device. This is necessary to allow dynamic ids to be added to * the driver from sysfs. * * This structure is defines a USB Serial driver. It provides all of * the information that the USB serial core code needs. If the function * pointers are defined, then the USB serial core code will call them when * the corresponding tty port functions are called. If they are not * called, the generic serial function will be used instead. * * The driver.owner field should be set to the module owner of this driver. * The driver.name field should be set to the name of this driver (remember * it will show up in sysfs, so it needs to be short and to the point. * Using the module name is a good idea.) */ struct usb_serial_driver { const char *description; const struct usb_device_id *id_table; struct list_head driver_list; struct device_driver driver; struct usb_driver *usb_driver; struct usb_dynids dynids; unsigned char num_ports; unsigned char num_bulk_in; unsigned char num_bulk_out; unsigned char num_interrupt_in; unsigned char num_interrupt_out; size_t bulk_in_size; size_t bulk_out_size; int (*probe)(struct usb_serial *serial, const struct usb_device_id *id); int (*attach)(struct usb_serial *serial); int (*calc_num_ports)(struct usb_serial *serial, struct usb_serial_endpoints *epds); void (*disconnect)(struct usb_serial *serial); void (*release)(struct usb_serial *serial); int (*port_probe)(struct usb_serial_port *port); void (*port_remove)(struct usb_serial_port *port); int (*suspend)(struct usb_serial *serial, pm_message_t message); int (*resume)(struct usb_serial *serial); int (*reset_resume)(struct usb_serial *serial); /* serial function calls */ /* Called by console and by the tty layer */ int (*open)(struct tty_struct *tty, struct usb_serial_port *port); void (*close)(struct usb_serial_port *port); int (*write)(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); /* Called only by the tty layer */ unsigned int (*write_room)(struct tty_struct *tty); int (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); void (*get_serial)(struct tty_struct *tty, struct serial_struct *ss); int (*set_serial)(struct tty_struct *tty, struct serial_struct *ss); void (*set_termios)(struct tty_struct *tty, struct usb_serial_port *port, const struct ktermios *old); int (*break_ctl)(struct tty_struct *tty, int break_state); unsigned int (*chars_in_buffer)(struct tty_struct *tty); void (*wait_until_sent)(struct tty_struct *tty, long timeout); bool (*tx_empty)(struct usb_serial_port *port); void (*throttle)(struct tty_struct *tty); void (*unthrottle)(struct tty_struct *tty); int (*tiocmget)(struct tty_struct *tty); int (*tiocmset)(struct tty_struct *tty, unsigned int set, unsigned int clear); int (*tiocmiwait)(struct tty_struct *tty, unsigned long arg); int (*get_icount)(struct tty_struct *tty, struct serial_icounter_struct *icount); /* Called by the tty layer for port level work. There may or may not be an attached tty at this point */ void (*dtr_rts)(struct usb_serial_port *port, int on); int (*carrier_raised)(struct usb_serial_port *port); /* Called by the usb serial hooks to allow the user to rework the termios state */ void (*init_termios)(struct tty_struct *tty); /* USB events */ void (*read_int_callback)(struct urb *urb); void (*write_int_callback)(struct urb *urb); void (*read_bulk_callback)(struct urb *urb); void (*write_bulk_callback)(struct urb *urb); /* Called by the generic read bulk callback */ void (*process_read_urb)(struct urb *urb); /* Called by the generic write implementation */ int (*prepare_write_buffer)(struct usb_serial_port *port, void *dest, size_t size); }; #define to_usb_serial_driver(d) \ container_of(d, struct usb_serial_driver, driver) #define usb_serial_register_drivers(serial_drivers, name, id_table) \ __usb_serial_register_drivers(serial_drivers, THIS_MODULE, name, id_table) int __usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[], struct module *owner, const char *name, const struct usb_device_id *id_table); void usb_serial_deregister_drivers(struct usb_serial_driver *const serial_drivers[]); void usb_serial_port_softint(struct usb_serial_port *port); int usb_serial_suspend(struct usb_interface *intf, pm_message_t message); int usb_serial_resume(struct usb_interface *intf); /* USB Serial console functions */ #ifdef CONFIG_USB_SERIAL_CONSOLE void usb_serial_console_init(int minor); void usb_serial_console_exit(void); void usb_serial_console_disconnect(struct usb_serial *serial); #else static inline void usb_serial_console_init(int minor) { } static inline void usb_serial_console_exit(void) { } static inline void usb_serial_console_disconnect(struct usb_serial *serial) {} #endif /* Functions needed by other parts of the usbserial core */ struct usb_serial_port *usb_serial_port_get_by_minor(unsigned int minor); void usb_serial_put(struct usb_serial *serial); int usb_serial_claim_interface(struct usb_serial *serial, struct usb_interface *intf); int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port); int usb_serial_generic_write_start(struct usb_serial_port *port, gfp_t mem_flags); int usb_serial_generic_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); void usb_serial_generic_close(struct usb_serial_port *port); int usb_serial_generic_resume(struct usb_serial *serial); unsigned int usb_serial_generic_write_room(struct tty_struct *tty); unsigned int usb_serial_generic_chars_in_buffer(struct tty_struct *tty); void usb_serial_generic_wait_until_sent(struct tty_struct *tty, long timeout); void usb_serial_generic_read_bulk_callback(struct urb *urb); void usb_serial_generic_write_bulk_callback(struct urb *urb); void usb_serial_generic_throttle(struct tty_struct *tty); void usb_serial_generic_unthrottle(struct tty_struct *tty); int usb_serial_generic_tiocmiwait(struct tty_struct *tty, unsigned long arg); int usb_serial_generic_get_icount(struct tty_struct *tty, struct serial_icounter_struct *icount); int usb_serial_generic_register(void); void usb_serial_generic_deregister(void); int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port, gfp_t mem_flags); void usb_serial_generic_process_read_urb(struct urb *urb); int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, void *dest, size_t size); #if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch); int usb_serial_handle_break(struct usb_serial_port *port); #else static inline int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) { return 0; } static inline int usb_serial_handle_break(struct usb_serial_port *port) { return 0; } #endif void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port, struct tty_struct *tty, unsigned int status); int usb_serial_bus_register(struct usb_serial_driver *device); void usb_serial_bus_deregister(struct usb_serial_driver *device); extern const struct bus_type usb_serial_bus_type; extern struct tty_driver *usb_serial_tty_driver; static inline void usb_serial_debug_data(struct device *dev, const char *function, int size, const unsigned char *data) { dev_dbg(dev, "%s - length = %d, data = %*ph\n", function, size, size, data); } /* * Macro for reporting errors in write path to avoid infinite loop * when port is used as a console. */ #define dev_err_console(usport, fmt, ...) \ do { \ static bool __print_once; \ struct usb_serial_port *__port = (usport); \ \ if (!__port->port.console || !__print_once) { \ __print_once = true; \ dev_err(&__port->dev, fmt, ##__VA_ARGS__); \ } \ } while (0) /* * module_usb_serial_driver() - Helper macro for registering a USB Serial driver * @__serial_drivers: list of usb_serial drivers to register * @__ids: all device ids that @__serial_drivers bind to * * Helper macro for USB serial drivers which do not do anything special * in module init/exit. This eliminates a lot of boilerplate. Each * module may only use this macro once, and calling it replaces * module_init() and module_exit() * */ #define usb_serial_module_driver(__name, __serial_drivers, __ids) \ static int __init usb_serial_module_init(void) \ { \ return usb_serial_register_drivers(__serial_drivers, \ __name, __ids); \ } \ module_init(usb_serial_module_init); \ static void __exit usb_serial_module_exit(void) \ { \ usb_serial_deregister_drivers(__serial_drivers); \ } \ module_exit(usb_serial_module_exit); #define module_usb_serial_driver(__serial_drivers, __ids) \ usb_serial_module_driver(KBUILD_MODNAME, __serial_drivers, __ids) #endif /* __LINUX_USB_SERIAL_H */ |
| 19 19 19 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Definitions for the 'struct ptr_ring' datastructure. * * Author: * Michael S. Tsirkin <mst@redhat.com> * * Copyright (C) 2016 Red Hat, Inc. * * This is a limited-size FIFO maintaining pointers in FIFO order, with * one CPU producing entries and another consuming entries from a FIFO. * * This implementation tries to minimize cache-contention when there is a * single producer and a single consumer CPU. */ #ifndef _LINUX_PTR_RING_H #define _LINUX_PTR_RING_H 1 #ifdef __KERNEL__ #include <linux/spinlock.h> #include <linux/cache.h> #include <linux/types.h> #include <linux/compiler.h> #include <linux/slab.h> #include <linux/mm.h> #include <asm/errno.h> #endif struct ptr_ring { int producer ____cacheline_aligned_in_smp; spinlock_t producer_lock; int consumer_head ____cacheline_aligned_in_smp; /* next valid entry */ int consumer_tail; /* next entry to invalidate */ spinlock_t consumer_lock; /* Shared consumer/producer data */ /* Read-only by both the producer and the consumer */ int size ____cacheline_aligned_in_smp; /* max entries in queue */ int batch; /* number of entries to consume in a batch */ void **queue; }; /* Note: callers invoking this in a loop must use a compiler barrier, * for example cpu_relax(). * * NB: this is unlike __ptr_ring_empty in that callers must hold producer_lock: * see e.g. ptr_ring_full. */ static inline bool __ptr_ring_full(struct ptr_ring *r) { return r->queue[r->producer]; } static inline bool ptr_ring_full(struct ptr_ring *r) { bool ret; spin_lock(&r->producer_lock); ret = __ptr_ring_full(r); spin_unlock(&r->producer_lock); return ret; } static inline bool ptr_ring_full_irq(struct ptr_ring *r) { bool ret; spin_lock_irq(&r->producer_lock); ret = __ptr_ring_full(r); spin_unlock_irq(&r->producer_lock); return ret; } static inline bool ptr_ring_full_any(struct ptr_ring *r) { unsigned long flags; bool ret; spin_lock_irqsave(&r->producer_lock, flags); ret = __ptr_ring_full(r); spin_unlock_irqrestore(&r->producer_lock, flags); return ret; } static inline bool ptr_ring_full_bh(struct ptr_ring *r) { bool ret; spin_lock_bh(&r->producer_lock); ret = __ptr_ring_full(r); spin_unlock_bh(&r->producer_lock); return ret; } /* Note: callers invoking this in a loop must use a compiler barrier, * for example cpu_relax(). Callers must hold producer_lock. * Callers are responsible for making sure pointer that is being queued * points to a valid data. */ static inline int __ptr_ring_produce(struct ptr_ring *r, void *ptr) { if (unlikely(!r->size) || r->queue[r->producer]) return -ENOSPC; /* Make sure the pointer we are storing points to a valid data. */ /* Pairs with the dependency ordering in __ptr_ring_consume. */ smp_wmb(); WRITE_ONCE(r->queue[r->producer++], ptr); if (unlikely(r->producer >= r->size)) r->producer = 0; return 0; } /* * Note: resize (below) nests producer lock within consumer lock, so if you * consume in interrupt or BH context, you must disable interrupts/BH when * calling this. */ static inline int ptr_ring_produce(struct ptr_ring *r, void *ptr) { int ret; spin_lock(&r->producer_lock); ret = __ptr_ring_produce(r, ptr); spin_unlock(&r->producer_lock); return ret; } static inline int ptr_ring_produce_irq(struct ptr_ring *r, void *ptr) { int ret; spin_lock_irq(&r->producer_lock); ret = __ptr_ring_produce(r, ptr); spin_unlock_irq(&r->producer_lock); return ret; } static inline int ptr_ring_produce_any(struct ptr_ring *r, void *ptr) { unsigned long flags; int ret; spin_lock_irqsave(&r->producer_lock, flags); ret = __ptr_ring_produce(r, ptr); spin_unlock_irqrestore(&r->producer_lock, flags); return ret; } static inline int ptr_ring_produce_bh(struct ptr_ring *r, void *ptr) { int ret; spin_lock_bh(&r->producer_lock); ret = __ptr_ring_produce(r, ptr); spin_unlock_bh(&r->producer_lock); return ret; } static inline void *__ptr_ring_peek(struct ptr_ring *r) { if (likely(r->size)) return READ_ONCE(r->queue[r->consumer_head]); return NULL; } /* * Test ring empty status without taking any locks. * * NB: This is only safe to call if ring is never resized. * * However, if some other CPU consumes ring entries at the same time, the value * returned is not guaranteed to be correct. * * In this case - to avoid incorrectly detecting the ring * as empty - the CPU consuming the ring entries is responsible * for either consuming all ring entries until the ring is empty, * or synchronizing with some other CPU and causing it to * re-test __ptr_ring_empty and/or consume the ring enteries * after the synchronization point. * * Note: callers invoking this in a loop must use a compiler barrier, * for example cpu_relax(). */ static inline bool __ptr_ring_empty(struct ptr_ring *r) { if (likely(r->size)) return !r->queue[READ_ONCE(r->consumer_head)]; return true; } static inline bool ptr_ring_empty(struct ptr_ring *r) { bool ret; spin_lock(&r->consumer_lock); ret = __ptr_ring_empty(r); spin_unlock(&r->consumer_lock); return ret; } static inline bool ptr_ring_empty_irq(struct ptr_ring *r) { bool ret; spin_lock_irq(&r->consumer_lock); ret = __ptr_ring_empty(r); spin_unlock_irq(&r->consumer_lock); return ret; } static inline bool ptr_ring_empty_any(struct ptr_ring *r) { unsigned long flags; bool ret; spin_lock_irqsave(&r->consumer_lock, flags); ret = __ptr_ring_empty(r); spin_unlock_irqrestore(&r->consumer_lock, flags); return ret; } static inline bool ptr_ring_empty_bh(struct ptr_ring *r) { bool ret; spin_lock_bh(&r->consumer_lock); ret = __ptr_ring_empty(r); spin_unlock_bh(&r->consumer_lock); return ret; } /* Zero entries from tail to specified head. * NB: if consumer_head can be >= r->size need to fixup tail later. */ static inline void __ptr_ring_zero_tail(struct ptr_ring *r, int consumer_head) { int head = consumer_head; /* Zero out entries in the reverse order: this way we touch the * cache line that producer might currently be reading the last; * producer won't make progress and touch other cache lines * besides the first one until we write out all entries. */ while (likely(head > r->consumer_tail)) r->queue[--head] = NULL; r->consumer_tail = consumer_head; } /* Must only be called after __ptr_ring_peek returned !NULL */ static inline void __ptr_ring_discard_one(struct ptr_ring *r) { /* Fundamentally, what we want to do is update consumer * index and zero out the entry so producer can reuse it. * Doing it naively at each consume would be as simple as: * consumer = r->consumer; * r->queue[consumer++] = NULL; * if (unlikely(consumer >= r->size)) * consumer = 0; * r->consumer = consumer; * but that is suboptimal when the ring is full as producer is writing * out new entries in the same cache line. Defer these updates until a * batch of entries has been consumed. */ /* Note: we must keep consumer_head valid at all times for __ptr_ring_empty * to work correctly. */ int consumer_head = r->consumer_head + 1; /* Once we have processed enough entries invalidate them in * the ring all at once so producer can reuse their space in the ring. * We also do this when we reach end of the ring - not mandatory * but helps keep the implementation simple. */ if (unlikely(consumer_head - r->consumer_tail >= r->batch || consumer_head >= r->size)) __ptr_ring_zero_tail(r, consumer_head); if (unlikely(consumer_head >= r->size)) { consumer_head = 0; r->consumer_tail = 0; } /* matching READ_ONCE in __ptr_ring_empty for lockless tests */ WRITE_ONCE(r->consumer_head, consumer_head); } static inline void *__ptr_ring_consume(struct ptr_ring *r) { void *ptr; /* The READ_ONCE in __ptr_ring_peek guarantees that anyone * accessing data through the pointer is up to date. Pairs * with smp_wmb in __ptr_ring_produce. */ ptr = __ptr_ring_peek(r); if (ptr) __ptr_ring_discard_one(r); return ptr; } static inline int __ptr_ring_consume_batched(struct ptr_ring *r, void **array, int n) { void *ptr; int i; for (i = 0; i < n; i++) { ptr = __ptr_ring_consume(r); if (!ptr) break; array[i] = ptr; } return i; } /* * Note: resize (below) nests producer lock within consumer lock, so if you * call this in interrupt or BH context, you must disable interrupts/BH when * producing. */ static inline void *ptr_ring_consume(struct ptr_ring *r) { void *ptr; spin_lock(&r->consumer_lock); ptr = __ptr_ring_consume(r); spin_unlock(&r->consumer_lock); return ptr; } static inline void *ptr_ring_consume_irq(struct ptr_ring *r) { void *ptr; spin_lock_irq(&r->consumer_lock); ptr = __ptr_ring_consume(r); spin_unlock_irq(&r->consumer_lock); return ptr; } static inline void *ptr_ring_consume_any(struct ptr_ring *r) { unsigned long flags; void *ptr; spin_lock_irqsave(&r->consumer_lock, flags); ptr = __ptr_ring_consume(r); spin_unlock_irqrestore(&r->consumer_lock, flags); return ptr; } static inline void *ptr_ring_consume_bh(struct ptr_ring *r) { void *ptr; spin_lock_bh(&r->consumer_lock); ptr = __ptr_ring_consume(r); spin_unlock_bh(&r->consumer_lock); return ptr; } static inline int ptr_ring_consume_batched(struct ptr_ring *r, void **array, int n) { int ret; spin_lock(&r->consumer_lock); ret = __ptr_ring_consume_batched(r, array, n); spin_unlock(&r->consumer_lock); return ret; } static inline int ptr_ring_consume_batched_irq(struct ptr_ring *r, void **array, int n) { int ret; spin_lock_irq(&r->consumer_lock); ret = __ptr_ring_consume_batched(r, array, n); spin_unlock_irq(&r->consumer_lock); return ret; } static inline int ptr_ring_consume_batched_any(struct ptr_ring *r, void **array, int n) { unsigned long flags; int ret; spin_lock_irqsave(&r->consumer_lock, flags); ret = __ptr_ring_consume_batched(r, array, n); spin_unlock_irqrestore(&r->consumer_lock, flags); return ret; } static inline int ptr_ring_consume_batched_bh(struct ptr_ring *r, void **array, int n) { int ret; spin_lock_bh(&r->consumer_lock); ret = __ptr_ring_consume_batched(r, array, n); spin_unlock_bh(&r->consumer_lock); return ret; } /* Cast to structure type and call a function without discarding from FIFO. * Function must return a value. * Callers must take consumer_lock. */ #define __PTR_RING_PEEK_CALL(r, f) ((f)(__ptr_ring_peek(r))) #define PTR_RING_PEEK_CALL(r, f) ({ \ typeof((f)(NULL)) __PTR_RING_PEEK_CALL_v; \ \ spin_lock(&(r)->consumer_lock); \ __PTR_RING_PEEK_CALL_v = __PTR_RING_PEEK_CALL(r, f); \ spin_unlock(&(r)->consumer_lock); \ __PTR_RING_PEEK_CALL_v; \ }) #define PTR_RING_PEEK_CALL_IRQ(r, f) ({ \ typeof((f)(NULL)) __PTR_RING_PEEK_CALL_v; \ \ spin_lock_irq(&(r)->consumer_lock); \ __PTR_RING_PEEK_CALL_v = __PTR_RING_PEEK_CALL(r, f); \ spin_unlock_irq(&(r)->consumer_lock); \ __PTR_RING_PEEK_CALL_v; \ }) #define PTR_RING_PEEK_CALL_BH(r, f) ({ \ typeof((f)(NULL)) __PTR_RING_PEEK_CALL_v; \ \ spin_lock_bh(&(r)->consumer_lock); \ __PTR_RING_PEEK_CALL_v = __PTR_RING_PEEK_CALL(r, f); \ spin_unlock_bh(&(r)->consumer_lock); \ __PTR_RING_PEEK_CALL_v; \ }) #define PTR_RING_PEEK_CALL_ANY(r, f) ({ \ typeof((f)(NULL)) __PTR_RING_PEEK_CALL_v; \ unsigned long __PTR_RING_PEEK_CALL_f;\ \ spin_lock_irqsave(&(r)->consumer_lock, __PTR_RING_PEEK_CALL_f); \ __PTR_RING_PEEK_CALL_v = __PTR_RING_PEEK_CALL(r, f); \ spin_unlock_irqrestore(&(r)->consumer_lock, __PTR_RING_PEEK_CALL_f); \ __PTR_RING_PEEK_CALL_v; \ }) /* Not all gfp_t flags (besides GFP_KERNEL) are allowed. See * documentation for vmalloc for which of them are legal. */ static inline void **__ptr_ring_init_queue_alloc_noprof(unsigned int size, gfp_t gfp) { if (size > KMALLOC_MAX_SIZE / sizeof(void *)) return NULL; return kvmalloc_array_noprof(size, sizeof(void *), gfp | __GFP_ZERO); } static inline void __ptr_ring_set_size(struct ptr_ring *r, int size) { r->size = size; r->batch = SMP_CACHE_BYTES * 2 / sizeof(*(r->queue)); /* We need to set batch at least to 1 to make logic * in __ptr_ring_discard_one work correctly. * Batching too much (because ring is small) would cause a lot of * burstiness. Needs tuning, for now disable batching. */ if (r->batch > r->size / 2 || !r->batch) r->batch = 1; } static inline int ptr_ring_init_noprof(struct ptr_ring *r, int size, gfp_t gfp) { r->queue = __ptr_ring_init_queue_alloc_noprof(size, gfp); if (!r->queue) return -ENOMEM; __ptr_ring_set_size(r, size); r->producer = r->consumer_head = r->consumer_tail = 0; spin_lock_init(&r->producer_lock); spin_lock_init(&r->consumer_lock); return 0; } #define ptr_ring_init(...) alloc_hooks(ptr_ring_init_noprof(__VA_ARGS__)) /* * Return entries into ring. Destroy entries that don't fit. * * Note: this is expected to be a rare slow path operation. * * Note: producer lock is nested within consumer lock, so if you * resize you must make sure all uses nest correctly. * In particular if you consume ring in interrupt or BH context, you must * disable interrupts/BH when doing so. */ static inline void ptr_ring_unconsume(struct ptr_ring *r, void **batch, int n, void (*destroy)(void *)) { unsigned long flags; spin_lock_irqsave(&r->consumer_lock, flags); spin_lock(&r->producer_lock); if (!r->size) goto done; /* * Clean out buffered entries (for simplicity). This way following code * can test entries for NULL and if not assume they are valid. */ __ptr_ring_zero_tail(r, r->consumer_head); /* * Go over entries in batch, start moving head back and copy entries. * Stop when we run into previously unconsumed entries. */ while (n) { int head = r->consumer_head - 1; if (head < 0) head = r->size - 1; if (r->queue[head]) { /* This batch entry will have to be destroyed. */ goto done; } r->queue[head] = batch[--n]; r->consumer_tail = head; /* matching READ_ONCE in __ptr_ring_empty for lockless tests */ WRITE_ONCE(r->consumer_head, head); } done: /* Destroy all entries left in the batch. */ while (n) destroy(batch[--n]); spin_unlock(&r->producer_lock); spin_unlock_irqrestore(&r->consumer_lock, flags); } static inline void **__ptr_ring_swap_queue(struct ptr_ring *r, void **queue, int size, gfp_t gfp, void (*destroy)(void *)) { int producer = 0; void **old; void *ptr; while ((ptr = __ptr_ring_consume(r))) if (producer < size) queue[producer++] = ptr; else if (destroy) destroy(ptr); if (producer >= size) producer = 0; __ptr_ring_set_size(r, size); r->producer = producer; r->consumer_head = 0; r->consumer_tail = 0; old = r->queue; r->queue = queue; return old; } /* * Note: producer lock is nested within consumer lock, so if you * resize you must make sure all uses nest correctly. * In particular if you consume ring in interrupt or BH context, you must * disable interrupts/BH when doing so. */ static inline int ptr_ring_resize_noprof(struct ptr_ring *r, int size, gfp_t gfp, void (*destroy)(void *)) { unsigned long flags; void **queue = __ptr_ring_init_queue_alloc_noprof(size, gfp); void **old; if (!queue) return -ENOMEM; spin_lock_irqsave(&(r)->consumer_lock, flags); spin_lock(&(r)->producer_lock); old = __ptr_ring_swap_queue(r, queue, size, gfp, destroy); spin_unlock(&(r)->producer_lock); spin_unlock_irqrestore(&(r)->consumer_lock, flags); kvfree(old); return 0; } #define ptr_ring_resize(...) alloc_hooks(ptr_ring_resize_noprof(__VA_ARGS__)) /* * Note: producer lock is nested within consumer lock, so if you * resize you must make sure all uses nest correctly. * In particular if you consume ring in BH context, you must * disable BH when doing so. */ static inline int ptr_ring_resize_multiple_bh_noprof(struct ptr_ring **rings, unsigned int nrings, int size, gfp_t gfp, void (*destroy)(void *)) { void ***queues; int i; queues = kmalloc_array_noprof(nrings, sizeof(*queues), gfp); if (!queues) goto noqueues; for (i = 0; i < nrings; ++i) { queues[i] = __ptr_ring_init_queue_alloc_noprof(size, gfp); if (!queues[i]) goto nomem; } for (i = 0; i < nrings; ++i) { spin_lock_bh(&(rings[i])->consumer_lock); spin_lock(&(rings[i])->producer_lock); queues[i] = __ptr_ring_swap_queue(rings[i], queues[i], size, gfp, destroy); spin_unlock(&(rings[i])->producer_lock); spin_unlock_bh(&(rings[i])->consumer_lock); } for (i = 0; i < nrings; ++i) kvfree(queues[i]); kfree(queues); return 0; nomem: while (--i >= 0) kvfree(queues[i]); kfree(queues); noqueues: return -ENOMEM; } #define ptr_ring_resize_multiple_bh(...) \ alloc_hooks(ptr_ring_resize_multiple_bh_noprof(__VA_ARGS__)) static inline void ptr_ring_cleanup(struct ptr_ring *r, void (*destroy)(void *)) { void *ptr; if (destroy) while ((ptr = ptr_ring_consume(r))) destroy(ptr); kvfree(r->queue); } #endif /* _LINUX_PTR_RING_H */ |
| 9 9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Register map access API internal header * * Copyright 2011 Wolfson Microelectronics plc * * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> */ #ifndef _REGMAP_INTERNAL_H #define _REGMAP_INTERNAL_H #include <linux/device.h> #include <linux/regmap.h> #include <linux/fs.h> #include <linux/list.h> #include <linux/wait.h> struct regmap; struct regcache_ops; struct regmap_debugfs_off_cache { struct list_head list; off_t min; off_t max; unsigned int base_reg; unsigned int max_reg; }; struct regmap_format { size_t buf_size; size_t reg_bytes; size_t pad_bytes; size_t val_bytes; s8 reg_shift; void (*format_write)(struct regmap *map, unsigned int reg, unsigned int val); void (*format_reg)(void *buf, unsigned int reg, unsigned int shift); void (*format_val)(void *buf, unsigned int val, unsigned int shift); unsigned int (*parse_val)(const void *buf); void (*parse_inplace)(void *buf); }; struct regmap_async { struct list_head list; struct regmap *map; void *work_buf; }; struct regmap { union { struct mutex mutex; struct { spinlock_t spinlock; unsigned long spinlock_flags; }; struct { raw_spinlock_t raw_spinlock; unsigned long raw_spinlock_flags; }; }; struct lock_class_key *lock_key; regmap_lock lock; regmap_unlock unlock; void *lock_arg; /* This is passed to lock/unlock functions */ gfp_t alloc_flags; unsigned int reg_base; struct device *dev; /* Device we do I/O on */ void *work_buf; /* Scratch buffer used to format I/O */ struct regmap_format format; /* Buffer format */ const struct regmap_bus *bus; void *bus_context; const char *name; spinlock_t async_lock; wait_queue_head_t async_waitq; struct list_head async_list; struct list_head async_free; int async_ret; bool async; #ifdef CONFIG_DEBUG_FS bool debugfs_disable; struct dentry *debugfs; const char *debugfs_name; unsigned int debugfs_reg_len; unsigned int debugfs_val_len; unsigned int debugfs_tot_len; struct list_head debugfs_off_cache; struct mutex cache_lock; #endif unsigned int max_register; bool max_register_is_set; bool (*writeable_reg)(struct device *dev, unsigned int reg); bool (*readable_reg)(struct device *dev, unsigned int reg); bool (*volatile_reg)(struct device *dev, unsigned int reg); bool (*precious_reg)(struct device *dev, unsigned int reg); bool (*writeable_noinc_reg)(struct device *dev, unsigned int reg); bool (*readable_noinc_reg)(struct device *dev, unsigned int reg); const struct regmap_access_table *wr_table; const struct regmap_access_table *rd_table; const struct regmap_access_table *volatile_table; const struct regmap_access_table *precious_table; const struct regmap_access_table *wr_noinc_table; const struct regmap_access_table *rd_noinc_table; int (*reg_read)(void *context, unsigned int reg, unsigned int *val); int (*reg_write)(void *context, unsigned int reg, unsigned int val); int (*reg_update_bits)(void *context, unsigned int reg, unsigned int mask, unsigned int val); /* Bulk read/write */ int (*read)(void *context, const void *reg_buf, size_t reg_size, void *val_buf, size_t val_size); int (*write)(void *context, const void *data, size_t count); unsigned long read_flag_mask; unsigned long write_flag_mask; /* number of bits to (left) shift the reg value when formatting*/ int reg_shift; int reg_stride; int reg_stride_order; bool defer_caching; /* If set, will always write field to HW. */ bool force_write_field; /* regcache specific members */ const struct regcache_ops *cache_ops; enum regcache_type cache_type; /* number of bytes in reg_defaults_raw */ unsigned int cache_size_raw; /* number of bytes per word in reg_defaults_raw */ unsigned int cache_word_size; /* number of entries in reg_defaults */ unsigned int num_reg_defaults; /* number of entries in reg_defaults_raw */ unsigned int num_reg_defaults_raw; /* if set, only the cache is modified not the HW */ bool cache_only; /* if set, only the HW is modified not the cache */ bool cache_bypass; /* if set, remember to free reg_defaults_raw */ bool cache_free; struct reg_default *reg_defaults; const void *reg_defaults_raw; void *cache; /* if set, the cache contains newer data than the HW */ bool cache_dirty; /* if set, the HW registers are known to match map->reg_defaults */ bool no_sync_defaults; struct reg_sequence *patch; int patch_regs; /* if set, the regmap core can sleep */ bool can_sleep; /* if set, converts bulk read to single read */ bool use_single_read; /* if set, converts bulk write to single write */ bool use_single_write; /* if set, the device supports multi write mode */ bool can_multi_write; /* if set, raw reads/writes are limited to this size */ size_t max_raw_read; size_t max_raw_write; struct rb_root range_tree; void *selector_work_buf; /* Scratch buffer used for selector */ struct hwspinlock *hwlock; }; struct regcache_ops { const char *name; enum regcache_type type; int (*init)(struct regmap *map); int (*exit)(struct regmap *map); #ifdef CONFIG_DEBUG_FS void (*debugfs_init)(struct regmap *map); #endif int (*read)(struct regmap *map, unsigned int reg, unsigned int *value); int (*write)(struct regmap *map, unsigned int reg, unsigned int value); int (*sync)(struct regmap *map, unsigned int min, unsigned int max); int (*drop)(struct regmap *map, unsigned int min, unsigned int max); }; bool regmap_cached(struct regmap *map, unsigned int reg); bool regmap_writeable(struct regmap *map, unsigned int reg); bool regmap_readable(struct regmap *map, unsigned int reg); bool regmap_volatile(struct regmap *map, unsigned int reg); bool regmap_precious(struct regmap *map, unsigned int reg); bool regmap_writeable_noinc(struct regmap *map, unsigned int reg); bool regmap_readable_noinc(struct regmap *map, unsigned int reg); int _regmap_write(struct regmap *map, unsigned int reg, unsigned int val); struct regmap_range_node { struct rb_node node; const char *name; struct regmap *map; unsigned int range_min; unsigned int range_max; unsigned int selector_reg; unsigned int selector_mask; int selector_shift; unsigned int window_start; unsigned int window_len; }; struct regmap_field { struct regmap *regmap; unsigned int mask; /* lsb */ unsigned int shift; unsigned int reg; unsigned int id_size; unsigned int id_offset; }; #ifdef CONFIG_DEBUG_FS extern void regmap_debugfs_initcall(void); extern void regmap_debugfs_init(struct regmap *map); extern void regmap_debugfs_exit(struct regmap *map); static inline void regmap_debugfs_disable(struct regmap *map) { map->debugfs_disable = true; } #else static inline void regmap_debugfs_initcall(void) { } static inline void regmap_debugfs_init(struct regmap *map) { } static inline void regmap_debugfs_exit(struct regmap *map) { } static inline void regmap_debugfs_disable(struct regmap *map) { } #endif /* regcache core declarations */ int regcache_init(struct regmap *map, const struct regmap_config *config); void regcache_exit(struct regmap *map); int regcache_read(struct regmap *map, unsigned int reg, unsigned int *value); int regcache_write(struct regmap *map, unsigned int reg, unsigned int value); int regcache_sync(struct regmap *map); int regcache_sync_block(struct regmap *map, void *block, unsigned long *cache_present, unsigned int block_base, unsigned int start, unsigned int end); bool regcache_reg_needs_sync(struct regmap *map, unsigned int reg, unsigned int val); static inline const void *regcache_get_val_addr(struct regmap *map, const void *base, unsigned int idx) { return base + (map->cache_word_size * idx); } unsigned int regcache_get_val(struct regmap *map, const void *base, unsigned int idx); void regcache_set_val(struct regmap *map, void *base, unsigned int idx, unsigned int val); int regcache_lookup_reg(struct regmap *map, unsigned int reg); int regcache_sync_val(struct regmap *map, unsigned int reg, unsigned int val); int _regmap_raw_write(struct regmap *map, unsigned int reg, const void *val, size_t val_len, bool noinc); void regmap_async_complete_cb(struct regmap_async *async, int ret); enum regmap_endian regmap_get_val_endian(struct device *dev, const struct regmap_bus *bus, const struct regmap_config *config); extern struct regcache_ops regcache_rbtree_ops; extern struct regcache_ops regcache_maple_ops; extern struct regcache_ops regcache_flat_ops; static inline const char *regmap_name(const struct regmap *map) { if (map->dev) return dev_name(map->dev); return map->name; } static inline unsigned int regmap_get_offset(const struct regmap *map, unsigned int index) { if (map->reg_stride_order >= 0) return index << map->reg_stride_order; else return index * map->reg_stride; } static inline unsigned int regcache_get_index_by_order(const struct regmap *map, unsigned int reg) { return reg >> map->reg_stride_order; } struct regmap_ram_data { unsigned int *vals; /* Allocatd by caller */ bool *read; bool *written; enum regmap_endian reg_endian; bool (*noinc_reg)(struct regmap_ram_data *data, unsigned int reg); }; /* * Create a test register map with data stored in RAM, not intended * for practical use. */ struct regmap *__regmap_init_ram(struct device *dev, const struct regmap_config *config, struct regmap_ram_data *data, struct lock_class_key *lock_key, const char *lock_name); #define regmap_init_ram(dev, config, data) \ __regmap_lockdep_wrapper(__regmap_init_ram, #dev, dev, config, data) struct regmap *__regmap_init_raw_ram(struct device *dev, const struct regmap_config *config, struct regmap_ram_data *data, struct lock_class_key *lock_key, const char *lock_name); #define regmap_init_raw_ram(dev, config, data) \ __regmap_lockdep_wrapper(__regmap_init_raw_ram, #dev, dev, config, data) #endif |
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2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 | // SPDX-License-Identifier: GPL-2.0-or-later /* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * IPv4 Forwarding Information Base: semantics. * * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> */ #include <linux/uaccess.h> #include <linux/bitops.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/jiffies.h> #include <linux/mm.h> #include <linux/string.h> #include <linux/socket.h> #include <linux/sockios.h> #include <linux/errno.h> #include <linux/in.h> #include <linux/inet.h> #include <linux/inetdevice.h> #include <linux/netdevice.h> #include <linux/if_arp.h> #include <linux/proc_fs.h> #include <linux/skbuff.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/netlink.h> #include <linux/hash.h> #include <linux/nospec.h> #include <net/arp.h> #include <net/inet_dscp.h> #include <net/ip.h> #include <net/protocol.h> #include <net/route.h> #include <net/tcp.h> #include <net/sock.h> #include <net/ip_fib.h> #include <net/ip6_fib.h> #include <net/nexthop.h> #include <net/netlink.h> #include <net/rtnh.h> #include <net/lwtunnel.h> #include <net/fib_notifier.h> #include <net/addrconf.h> #include "fib_lookup.h" /* for_nexthops and change_nexthops only used when nexthop object * is not set in a fib_info. The logic within can reference fib_nh. */ #ifdef CONFIG_IP_ROUTE_MULTIPATH #define for_nexthops(fi) { \ int nhsel; const struct fib_nh *nh; \ for (nhsel = 0, nh = (fi)->fib_nh; \ nhsel < fib_info_num_path((fi)); \ nh++, nhsel++) #define change_nexthops(fi) { \ int nhsel; struct fib_nh *nexthop_nh; \ for (nhsel = 0, nexthop_nh = (struct fib_nh *)((fi)->fib_nh); \ nhsel < fib_info_num_path((fi)); \ nexthop_nh++, nhsel++) #else /* CONFIG_IP_ROUTE_MULTIPATH */ /* Hope, that gcc will optimize it to get rid of dummy loop */ #define for_nexthops(fi) { \ int nhsel; const struct fib_nh *nh = (fi)->fib_nh; \ for (nhsel = 0; nhsel < 1; nhsel++) #define change_nexthops(fi) { \ int nhsel; \ struct fib_nh *nexthop_nh = (struct fib_nh *)((fi)->fib_nh); \ for (nhsel = 0; nhsel < 1; nhsel++) #endif /* CONFIG_IP_ROUTE_MULTIPATH */ #define endfor_nexthops(fi) } const struct fib_prop fib_props[RTN_MAX + 1] = { [RTN_UNSPEC] = { .error = 0, .scope = RT_SCOPE_NOWHERE, }, [RTN_UNICAST] = { .error = 0, .scope = RT_SCOPE_UNIVERSE, }, [RTN_LOCAL] = { .error = 0, .scope = RT_SCOPE_HOST, }, [RTN_BROADCAST] = { .error = 0, .scope = RT_SCOPE_LINK, }, [RTN_ANYCAST] = { .error = 0, .scope = RT_SCOPE_LINK, }, [RTN_MULTICAST] = { .error = 0, .scope = RT_SCOPE_UNIVERSE, }, [RTN_BLACKHOLE] = { .error = -EINVAL, .scope = RT_SCOPE_UNIVERSE, }, [RTN_UNREACHABLE] = { .error = -EHOSTUNREACH, .scope = RT_SCOPE_UNIVERSE, }, [RTN_PROHIBIT] = { .error = -EACCES, .scope = RT_SCOPE_UNIVERSE, }, [RTN_THROW] = { .error = -EAGAIN, .scope = RT_SCOPE_UNIVERSE, }, [RTN_NAT] = { .error = -EINVAL, .scope = RT_SCOPE_NOWHERE, }, [RTN_XRESOLVE] = { .error = -EINVAL, .scope = RT_SCOPE_NOWHERE, }, }; static void rt_fibinfo_free(struct rtable __rcu **rtp) { struct rtable *rt = rcu_dereference_protected(*rtp, 1); if (!rt) return; /* Not even needed : RCU_INIT_POINTER(*rtp, NULL); * because we waited an RCU grace period before calling * free_fib_info_rcu() */ dst_dev_put(&rt->dst); dst_release_immediate(&rt->dst); } static void free_nh_exceptions(struct fib_nh_common *nhc) { struct fnhe_hash_bucket *hash; int i; hash = rcu_dereference_protected(nhc->nhc_exceptions, 1); if (!hash) return; for (i = 0; i < FNHE_HASH_SIZE; i++) { struct fib_nh_exception *fnhe; fnhe = rcu_dereference_protected(hash[i].chain, 1); while (fnhe) { struct fib_nh_exception *next; next = rcu_dereference_protected(fnhe->fnhe_next, 1); rt_fibinfo_free(&fnhe->fnhe_rth_input); rt_fibinfo_free(&fnhe->fnhe_rth_output); kfree(fnhe); fnhe = next; } } kfree(hash); } static void rt_fibinfo_free_cpus(struct rtable __rcu * __percpu *rtp) { int cpu; if (!rtp) return; for_each_possible_cpu(cpu) { struct rtable *rt; rt = rcu_dereference_protected(*per_cpu_ptr(rtp, cpu), 1); if (rt) { dst_dev_put(&rt->dst); dst_release_immediate(&rt->dst); } } free_percpu(rtp); } void fib_nh_common_release(struct fib_nh_common *nhc) { netdev_put(nhc->nhc_dev, &nhc->nhc_dev_tracker); lwtstate_put(nhc->nhc_lwtstate); rt_fibinfo_free_cpus(nhc->nhc_pcpu_rth_output); rt_fibinfo_free(&nhc->nhc_rth_input); free_nh_exceptions(nhc); } EXPORT_SYMBOL_GPL(fib_nh_common_release); void fib_nh_release(struct net *net, struct fib_nh *fib_nh) { #ifdef CONFIG_IP_ROUTE_CLASSID if (fib_nh->nh_tclassid) atomic_dec(&net->ipv4.fib_num_tclassid_users); #endif fib_nh_common_release(&fib_nh->nh_common); } /* Release a nexthop info record */ static void free_fib_info_rcu(struct rcu_head *head) { struct fib_info *fi = container_of(head, struct fib_info, rcu); if (fi->nh) { nexthop_put(fi->nh); } else { change_nexthops(fi) { fib_nh_release(fi->fib_net, nexthop_nh); } endfor_nexthops(fi); } ip_fib_metrics_put(fi->fib_metrics); kfree(fi); } void free_fib_info(struct fib_info *fi) { if (fi->fib_dead == 0) { pr_warn("Freeing alive fib_info %p\n", fi); return; } call_rcu_hurry(&fi->rcu, free_fib_info_rcu); } EXPORT_SYMBOL_GPL(free_fib_info); void fib_release_info(struct fib_info *fi) { ASSERT_RTNL(); if (fi && refcount_dec_and_test(&fi->fib_treeref)) { hlist_del(&fi->fib_hash); fi->fib_net->ipv4.fib_info_cnt--; if (fi->fib_prefsrc) hlist_del(&fi->fib_lhash); if (fi->nh) { list_del(&fi->nh_list); } else { change_nexthops(fi) { if (!nexthop_nh->fib_nh_dev) continue; hlist_del_rcu(&nexthop_nh->nh_hash); } endfor_nexthops(fi) } /* Paired with READ_ONCE() from fib_table_lookup() */ WRITE_ONCE(fi->fib_dead, 1); fib_info_put(fi); } } static inline int nh_comp(struct fib_info *fi, struct fib_info *ofi) { const struct fib_nh *onh; if (fi->nh || ofi->nh) return nexthop_cmp(fi->nh, ofi->nh) ? 0 : -1; if (ofi->fib_nhs == 0) return 0; for_nexthops(fi) { onh = fib_info_nh(ofi, nhsel); if (nh->fib_nh_oif != onh->fib_nh_oif || nh->fib_nh_gw_family != onh->fib_nh_gw_family || nh->fib_nh_scope != onh->fib_nh_scope || #ifdef CONFIG_IP_ROUTE_MULTIPATH nh->fib_nh_weight != onh->fib_nh_weight || #endif #ifdef CONFIG_IP_ROUTE_CLASSID nh->nh_tclassid != onh->nh_tclassid || #endif lwtunnel_cmp_encap(nh->fib_nh_lws, onh->fib_nh_lws) || ((nh->fib_nh_flags ^ onh->fib_nh_flags) & ~RTNH_COMPARE_MASK)) return -1; if (nh->fib_nh_gw_family == AF_INET && nh->fib_nh_gw4 != onh->fib_nh_gw4) return -1; if (nh->fib_nh_gw_family == AF_INET6 && ipv6_addr_cmp(&nh->fib_nh_gw6, &onh->fib_nh_gw6)) return -1; } endfor_nexthops(fi); return 0; } static struct hlist_head *fib_nh_head(struct net_device *dev) { return &dev->fib_nh_head; } static unsigned int fib_info_hashfn_1(int init_val, u8 protocol, u8 scope, u32 prefsrc, u32 priority) { unsigned int val = init_val; val ^= (protocol << 8) | scope; val ^= prefsrc; val ^= priority; return val; } static unsigned int fib_info_hashfn_result(const struct net *net, unsigned int val) { return hash_32(val ^ net_hash_mix(net), net->ipv4.fib_info_hash_bits); } static struct hlist_head *fib_info_hash_bucket(struct fib_info *fi) { struct net *net = fi->fib_net; unsigned int val; val = fib_info_hashfn_1(fi->fib_nhs, fi->fib_protocol, fi->fib_scope, (__force u32)fi->fib_prefsrc, fi->fib_priority); if (fi->nh) { val ^= fi->nh->id; } else { for_nexthops(fi) { val ^= nh->fib_nh_oif; } endfor_nexthops(fi) } return &net->ipv4.fib_info_hash[fib_info_hashfn_result(net, val)]; } static struct hlist_head *fib_info_laddrhash_bucket(const struct net *net, __be32 val) { unsigned int hash_bits = net->ipv4.fib_info_hash_bits; u32 slot; slot = hash_32(net_hash_mix(net) ^ (__force u32)val, hash_bits); return &net->ipv4.fib_info_hash[(1 << hash_bits) + slot]; } static struct hlist_head *fib_info_hash_alloc(unsigned int hash_bits) { /* The second half is used for prefsrc */ return kvcalloc((1 << hash_bits) * 2, sizeof(struct hlist_head), GFP_KERNEL); } static void fib_info_hash_free(struct hlist_head *head) { kvfree(head); } static void fib_info_hash_grow(struct net *net) { unsigned int old_size = 1 << net->ipv4.fib_info_hash_bits; struct hlist_head *new_info_hash, *old_info_hash; unsigned int i; if (net->ipv4.fib_info_cnt < old_size) return; new_info_hash = fib_info_hash_alloc(net->ipv4.fib_info_hash_bits + 1); if (!new_info_hash) return; old_info_hash = net->ipv4.fib_info_hash; net->ipv4.fib_info_hash = new_info_hash; net->ipv4.fib_info_hash_bits += 1; for (i = 0; i < old_size; i++) { struct hlist_head *head = &old_info_hash[i]; struct hlist_node *n; struct fib_info *fi; hlist_for_each_entry_safe(fi, n, head, fib_hash) hlist_add_head(&fi->fib_hash, fib_info_hash_bucket(fi)); } for (i = 0; i < old_size; i++) { struct hlist_head *lhead = &old_info_hash[old_size + i]; struct hlist_node *n; struct fib_info *fi; hlist_for_each_entry_safe(fi, n, lhead, fib_lhash) hlist_add_head(&fi->fib_lhash, fib_info_laddrhash_bucket(fi->fib_net, fi->fib_prefsrc)); } fib_info_hash_free(old_info_hash); } /* no metrics, only nexthop id */ static struct fib_info *fib_find_info_nh(struct net *net, const struct fib_config *cfg) { struct hlist_head *head; struct fib_info *fi; unsigned int hash; hash = fib_info_hashfn_1(cfg->fc_nh_id, cfg->fc_protocol, cfg->fc_scope, (__force u32)cfg->fc_prefsrc, cfg->fc_priority); hash = fib_info_hashfn_result(net, hash); head = &net->ipv4.fib_info_hash[hash]; hlist_for_each_entry(fi, head, fib_hash) { if (!fi->nh || fi->nh->id != cfg->fc_nh_id) continue; if (cfg->fc_protocol == fi->fib_protocol && cfg->fc_scope == fi->fib_scope && cfg->fc_prefsrc == fi->fib_prefsrc && cfg->fc_priority == fi->fib_priority && cfg->fc_type == fi->fib_type && cfg->fc_table == fi->fib_tb_id && !((cfg->fc_flags ^ fi->fib_flags) & ~RTNH_COMPARE_MASK)) return fi; } return NULL; } static struct fib_info *fib_find_info(struct fib_info *nfi) { struct hlist_head *head = fib_info_hash_bucket(nfi); struct fib_info *fi; hlist_for_each_entry(fi, head, fib_hash) { if (fi->fib_nhs != nfi->fib_nhs) continue; if (nfi->fib_protocol == fi->fib_protocol && nfi->fib_scope == fi->fib_scope && nfi->fib_prefsrc == fi->fib_prefsrc && nfi->fib_priority == fi->fib_priority && nfi->fib_type == fi->fib_type && nfi->fib_tb_id == fi->fib_tb_id && memcmp(nfi->fib_metrics, fi->fib_metrics, sizeof(u32) * RTAX_MAX) == 0 && !((nfi->fib_flags ^ fi->fib_flags) & ~RTNH_COMPARE_MASK) && nh_comp(fi, nfi) == 0) return fi; } return NULL; } /* Check, that the gateway is already configured. * Used only by redirect accept routine, under rcu_read_lock(); */ int ip_fib_check_default(__be32 gw, struct net_device *dev) { struct hlist_head *head; struct fib_nh *nh; head = fib_nh_head(dev); hlist_for_each_entry_rcu(nh, head, nh_hash) { DEBUG_NET_WARN_ON_ONCE(nh->fib_nh_dev != dev); if (nh->fib_nh_gw4 == gw && !(nh->fib_nh_flags & RTNH_F_DEAD)) { return 0; } } return -1; } size_t fib_nlmsg_size(struct fib_info *fi) { size_t payload = NLMSG_ALIGN(sizeof(struct rtmsg)) + nla_total_size(4) /* RTA_TABLE */ + nla_total_size(4) /* RTA_DST */ + nla_total_size(4) /* RTA_PRIORITY */ + nla_total_size(4) /* RTA_PREFSRC */ + nla_total_size(TCP_CA_NAME_MAX); /* RTAX_CC_ALGO */ unsigned int nhs = fib_info_num_path(fi); /* space for nested metrics */ payload += nla_total_size((RTAX_MAX * nla_total_size(4))); if (fi->nh) payload += nla_total_size(4); /* RTA_NH_ID */ if (nhs) { size_t nh_encapsize = 0; /* Also handles the special case nhs == 1 */ /* each nexthop is packed in an attribute */ size_t nhsize = nla_total_size(sizeof(struct rtnexthop)); unsigned int i; /* may contain flow and gateway attribute */ nhsize += 2 * nla_total_size(4); /* grab encap info */ for (i = 0; i < fib_info_num_path(fi); i++) { struct fib_nh_common *nhc = fib_info_nhc(fi, i); if (nhc->nhc_lwtstate) { /* RTA_ENCAP_TYPE */ nh_encapsize += lwtunnel_get_encap_size( nhc->nhc_lwtstate); /* RTA_ENCAP */ nh_encapsize += nla_total_size(2); } } /* all nexthops are packed in a nested attribute */ payload += nla_total_size((nhs * nhsize) + nh_encapsize); } return payload; } void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len, u32 tb_id, const struct nl_info *info, unsigned int nlm_flags) { struct fib_rt_info fri; struct sk_buff *skb; u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; int err = -ENOBUFS; skb = nlmsg_new(fib_nlmsg_size(fa->fa_info), GFP_KERNEL); if (!skb) goto errout; fri.fi = fa->fa_info; fri.tb_id = tb_id; fri.dst = key; fri.dst_len = dst_len; fri.dscp = fa->fa_dscp; fri.type = fa->fa_type; fri.offload = READ_ONCE(fa->offload); fri.trap = READ_ONCE(fa->trap); fri.offload_failed = READ_ONCE(fa->offload_failed); err = fib_dump_info(skb, info->portid, seq, event, &fri, nlm_flags); if (err < 0) { /* -EMSGSIZE implies BUG in fib_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } rtnl_notify(skb, info->nl_net, info->portid, RTNLGRP_IPV4_ROUTE, info->nlh, GFP_KERNEL); return; errout: rtnl_set_sk_err(info->nl_net, RTNLGRP_IPV4_ROUTE, err); } static int fib_detect_death(struct fib_info *fi, int order, struct fib_info **last_resort, int *last_idx, int dflt) { const struct fib_nh_common *nhc = fib_info_nhc(fi, 0); struct neighbour *n; int state = NUD_NONE; if (likely(nhc->nhc_gw_family == AF_INET)) n = neigh_lookup(&arp_tbl, &nhc->nhc_gw.ipv4, nhc->nhc_dev); else if (nhc->nhc_gw_family == AF_INET6) n = neigh_lookup(ipv6_stub->nd_tbl, &nhc->nhc_gw.ipv6, nhc->nhc_dev); else n = NULL; if (n) { state = READ_ONCE(n->nud_state); neigh_release(n); } else { return 0; } if (state == NUD_REACHABLE) return 0; if ((state & NUD_VALID) && order != dflt) return 0; if ((state & NUD_VALID) || (*last_idx < 0 && order > dflt && state != NUD_INCOMPLETE)) { *last_resort = fi; *last_idx = order; } return 1; } int fib_nh_common_init(struct net *net, struct fib_nh_common *nhc, struct nlattr *encap, u16 encap_type, void *cfg, gfp_t gfp_flags, struct netlink_ext_ack *extack) { int err; nhc->nhc_pcpu_rth_output = alloc_percpu_gfp(struct rtable __rcu *, gfp_flags); if (!nhc->nhc_pcpu_rth_output) return -ENOMEM; if (encap) { struct lwtunnel_state *lwtstate; err = lwtunnel_build_state(net, encap_type, encap, nhc->nhc_family, cfg, &lwtstate, extack); if (err) goto lwt_failure; nhc->nhc_lwtstate = lwtstate_get(lwtstate); } return 0; lwt_failure: rt_fibinfo_free_cpus(nhc->nhc_pcpu_rth_output); nhc->nhc_pcpu_rth_output = NULL; return err; } EXPORT_SYMBOL_GPL(fib_nh_common_init); int fib_nh_init(struct net *net, struct fib_nh *nh, struct fib_config *cfg, int nh_weight, struct netlink_ext_ack *extack) { int err; nh->fib_nh_family = AF_INET; err = fib_nh_common_init(net, &nh->nh_common, cfg->fc_encap, cfg->fc_encap_type, cfg, GFP_KERNEL, extack); if (err) return err; nh->fib_nh_oif = cfg->fc_oif; nh->fib_nh_gw_family = cfg->fc_gw_family; if (cfg->fc_gw_family == AF_INET) nh->fib_nh_gw4 = cfg->fc_gw4; else if (cfg->fc_gw_family == AF_INET6) nh->fib_nh_gw6 = cfg->fc_gw6; nh->fib_nh_flags = cfg->fc_flags; #ifdef CONFIG_IP_ROUTE_CLASSID nh->nh_tclassid = cfg->fc_flow; if (nh->nh_tclassid) atomic_inc(&net->ipv4.fib_num_tclassid_users); #endif #ifdef CONFIG_IP_ROUTE_MULTIPATH nh->fib_nh_weight = nh_weight; #endif return 0; } #ifdef CONFIG_IP_ROUTE_MULTIPATH static int fib_count_nexthops(struct rtnexthop *rtnh, int remaining, struct netlink_ext_ack *extack) { int nhs = 0; while (rtnh_ok(rtnh, remaining)) { nhs++; rtnh = rtnh_next(rtnh, &remaining); } /* leftover implies invalid nexthop configuration, discard it */ if (remaining > 0) { NL_SET_ERR_MSG(extack, "Invalid nexthop configuration - extra data after nexthops"); nhs = 0; } return nhs; } static int fib_gw_from_attr(__be32 *gw, struct nlattr *nla, struct netlink_ext_ack *extack) { if (nla_len(nla) < sizeof(*gw)) { NL_SET_ERR_MSG(extack, "Invalid IPv4 address in RTA_GATEWAY"); return -EINVAL; } *gw = nla_get_in_addr(nla); return 0; } /* only called when fib_nh is integrated into fib_info */ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh, int remaining, struct fib_config *cfg, struct netlink_ext_ack *extack) { struct net *net = fi->fib_net; struct fib_config fib_cfg; struct fib_nh *nh; int ret; change_nexthops(fi) { int attrlen; memset(&fib_cfg, 0, sizeof(fib_cfg)); if (!rtnh_ok(rtnh, remaining)) { NL_SET_ERR_MSG(extack, "Invalid nexthop configuration - extra data after nexthop"); return -EINVAL; } if (rtnh->rtnh_flags & (RTNH_F_DEAD | RTNH_F_LINKDOWN)) { NL_SET_ERR_MSG(extack, "Invalid flags for nexthop - can not contain DEAD or LINKDOWN"); return -EINVAL; } fib_cfg.fc_flags = (cfg->fc_flags & ~0xFF) | rtnh->rtnh_flags; fib_cfg.fc_oif = rtnh->rtnh_ifindex; attrlen = rtnh_attrlen(rtnh); if (attrlen > 0) { struct nlattr *nla, *nlav, *attrs = rtnh_attrs(rtnh); nla = nla_find(attrs, attrlen, RTA_GATEWAY); nlav = nla_find(attrs, attrlen, RTA_VIA); if (nla && nlav) { NL_SET_ERR_MSG(extack, "Nexthop configuration can not contain both GATEWAY and VIA"); return -EINVAL; } if (nla) { ret = fib_gw_from_attr(&fib_cfg.fc_gw4, nla, extack); if (ret) goto errout; if (fib_cfg.fc_gw4) fib_cfg.fc_gw_family = AF_INET; } else if (nlav) { ret = fib_gw_from_via(&fib_cfg, nlav, extack); if (ret) goto errout; } nla = nla_find(attrs, attrlen, RTA_FLOW); if (nla) { if (nla_len(nla) < sizeof(u32)) { NL_SET_ERR_MSG(extack, "Invalid RTA_FLOW"); return -EINVAL; } fib_cfg.fc_flow = nla_get_u32(nla); } fib_cfg.fc_encap = nla_find(attrs, attrlen, RTA_ENCAP); /* RTA_ENCAP_TYPE length checked in * lwtunnel_valid_encap_type_attr */ nla = nla_find(attrs, attrlen, RTA_ENCAP_TYPE); if (nla) fib_cfg.fc_encap_type = nla_get_u16(nla); } ret = fib_nh_init(net, nexthop_nh, &fib_cfg, rtnh->rtnh_hops + 1, extack); if (ret) goto errout; rtnh = rtnh_next(rtnh, &remaining); } endfor_nexthops(fi); ret = -EINVAL; nh = fib_info_nh(fi, 0); if (cfg->fc_oif && nh->fib_nh_oif != cfg->fc_oif) { NL_SET_ERR_MSG(extack, "Nexthop device index does not match RTA_OIF"); goto errout; } if (cfg->fc_gw_family) { if (cfg->fc_gw_family != nh->fib_nh_gw_family || (cfg->fc_gw_family == AF_INET && nh->fib_nh_gw4 != cfg->fc_gw4) || (cfg->fc_gw_family == AF_INET6 && ipv6_addr_cmp(&nh->fib_nh_gw6, &cfg->fc_gw6))) { NL_SET_ERR_MSG(extack, "Nexthop gateway does not match RTA_GATEWAY or RTA_VIA"); goto errout; } } #ifdef CONFIG_IP_ROUTE_CLASSID if (cfg->fc_flow && nh->nh_tclassid != cfg->fc_flow) { NL_SET_ERR_MSG(extack, "Nexthop class id does not match RTA_FLOW"); goto errout; } #endif ret = 0; errout: return ret; } /* only called when fib_nh is integrated into fib_info */ static void fib_rebalance(struct fib_info *fi) { int total; int w; if (fib_info_num_path(fi) < 2) return; total = 0; for_nexthops(fi) { if (nh->fib_nh_flags & RTNH_F_DEAD) continue; if (ip_ignore_linkdown(nh->fib_nh_dev) && nh->fib_nh_flags & RTNH_F_LINKDOWN) continue; total += nh->fib_nh_weight; } endfor_nexthops(fi); w = 0; change_nexthops(fi) { int upper_bound; if (nexthop_nh->fib_nh_flags & RTNH_F_DEAD) { upper_bound = -1; } else if (ip_ignore_linkdown(nexthop_nh->fib_nh_dev) && nexthop_nh->fib_nh_flags & RTNH_F_LINKDOWN) { upper_bound = -1; } else { w += nexthop_nh->fib_nh_weight; upper_bound = DIV_ROUND_CLOSEST_ULL((u64)w << 31, total) - 1; } atomic_set(&nexthop_nh->fib_nh_upper_bound, upper_bound); } endfor_nexthops(fi); } #else /* CONFIG_IP_ROUTE_MULTIPATH */ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh, int remaining, struct fib_config *cfg, struct netlink_ext_ack *extack) { NL_SET_ERR_MSG(extack, "Multipath support not enabled in kernel"); return -EINVAL; } #define fib_rebalance(fi) do { } while (0) #endif /* CONFIG_IP_ROUTE_MULTIPATH */ static int fib_encap_match(struct net *net, u16 encap_type, struct nlattr *encap, const struct fib_nh *nh, const struct fib_config *cfg, struct netlink_ext_ack *extack) { struct lwtunnel_state *lwtstate; int ret, result = 0; if (encap_type == LWTUNNEL_ENCAP_NONE) return 0; ret = lwtunnel_build_state(net, encap_type, encap, AF_INET, cfg, &lwtstate, extack); if (!ret) { result = lwtunnel_cmp_encap(lwtstate, nh->fib_nh_lws); lwtstate_free(lwtstate); } return result; } int fib_nh_match(struct net *net, struct fib_config *cfg, struct fib_info *fi, struct netlink_ext_ack *extack) { #ifdef CONFIG_IP_ROUTE_MULTIPATH struct rtnexthop *rtnh; int remaining; #endif if (cfg->fc_priority && cfg->fc_priority != fi->fib_priority) return 1; if (cfg->fc_nh_id) { if (fi->nh && cfg->fc_nh_id == fi->nh->id) return 0; return 1; } if (fi->nh) { if (cfg->fc_oif || cfg->fc_gw_family || cfg->fc_mp) return 1; return 0; } if (cfg->fc_oif || cfg->fc_gw_family) { struct fib_nh *nh; nh = fib_info_nh(fi, 0); if (cfg->fc_encap) { if (fib_encap_match(net, cfg->fc_encap_type, cfg->fc_encap, nh, cfg, extack)) return 1; } #ifdef CONFIG_IP_ROUTE_CLASSID if (cfg->fc_flow && cfg->fc_flow != nh->nh_tclassid) return 1; #endif if ((cfg->fc_oif && cfg->fc_oif != nh->fib_nh_oif) || (cfg->fc_gw_family && cfg->fc_gw_family != nh->fib_nh_gw_family)) return 1; if (cfg->fc_gw_family == AF_INET && cfg->fc_gw4 != nh->fib_nh_gw4) return 1; if (cfg->fc_gw_family == AF_INET6 && ipv6_addr_cmp(&cfg->fc_gw6, &nh->fib_nh_gw6)) return 1; return 0; } #ifdef CONFIG_IP_ROUTE_MULTIPATH if (!cfg->fc_mp) return 0; rtnh = cfg->fc_mp; remaining = cfg->fc_mp_len; for_nexthops(fi) { int attrlen; if (!rtnh_ok(rtnh, remaining)) return -EINVAL; if (rtnh->rtnh_ifindex && rtnh->rtnh_ifindex != nh->fib_nh_oif) return 1; attrlen = rtnh_attrlen(rtnh); if (attrlen > 0) { struct nlattr *nla, *nlav, *attrs = rtnh_attrs(rtnh); int err; nla = nla_find(attrs, attrlen, RTA_GATEWAY); nlav = nla_find(attrs, attrlen, RTA_VIA); if (nla && nlav) { NL_SET_ERR_MSG(extack, "Nexthop configuration can not contain both GATEWAY and VIA"); return -EINVAL; } if (nla) { __be32 gw; err = fib_gw_from_attr(&gw, nla, extack); if (err) return err; if (nh->fib_nh_gw_family != AF_INET || gw != nh->fib_nh_gw4) return 1; } else if (nlav) { struct fib_config cfg2; err = fib_gw_from_via(&cfg2, nlav, extack); if (err) return err; switch (nh->fib_nh_gw_family) { case AF_INET: if (cfg2.fc_gw_family != AF_INET || cfg2.fc_gw4 != nh->fib_nh_gw4) return 1; break; case AF_INET6: if (cfg2.fc_gw_family != AF_INET6 || ipv6_addr_cmp(&cfg2.fc_gw6, &nh->fib_nh_gw6)) return 1; break; } } #ifdef CONFIG_IP_ROUTE_CLASSID nla = nla_find(attrs, attrlen, RTA_FLOW); if (nla) { if (nla_len(nla) < sizeof(u32)) { NL_SET_ERR_MSG(extack, "Invalid RTA_FLOW"); return -EINVAL; } if (nla_get_u32(nla) != nh->nh_tclassid) return 1; } #endif } rtnh = rtnh_next(rtnh, &remaining); } endfor_nexthops(fi); #endif return 0; } bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi) { struct nlattr *nla; int remaining; if (!cfg->fc_mx) return true; nla_for_each_attr(nla, cfg->fc_mx, cfg->fc_mx_len, remaining) { int type = nla_type(nla); u32 fi_val, val; if (!type) continue; if (type > RTAX_MAX) return false; type = array_index_nospec(type, RTAX_MAX + 1); if (type == RTAX_CC_ALGO) { char tmp[TCP_CA_NAME_MAX]; bool ecn_ca = false; nla_strscpy(tmp, nla, sizeof(tmp)); val = tcp_ca_get_key_by_name(tmp, &ecn_ca); } else { if (nla_len(nla) != sizeof(u32)) return false; val = nla_get_u32(nla); } fi_val = fi->fib_metrics->metrics[type - 1]; if (type == RTAX_FEATURES) fi_val &= ~DST_FEATURE_ECN_CA; if (fi_val != val) return false; } return true; } static int fib_check_nh_v6_gw(struct net *net, struct fib_nh *nh, u32 table, struct netlink_ext_ack *extack) { struct fib6_config cfg = { .fc_table = table, .fc_flags = nh->fib_nh_flags | RTF_GATEWAY, .fc_ifindex = nh->fib_nh_oif, .fc_gateway = nh->fib_nh_gw6, }; struct fib6_nh fib6_nh = {}; int err; err = ipv6_stub->fib6_nh_init(net, &fib6_nh, &cfg, GFP_KERNEL, extack); if (!err) { nh->fib_nh_dev = fib6_nh.fib_nh_dev; netdev_hold(nh->fib_nh_dev, &nh->fib_nh_dev_tracker, GFP_KERNEL); nh->fib_nh_oif = nh->fib_nh_dev->ifindex; nh->fib_nh_scope = RT_SCOPE_LINK; ipv6_stub->fib6_nh_release(&fib6_nh); } return err; } /* * Picture * ------- * * Semantics of nexthop is very messy by historical reasons. * We have to take into account, that: * a) gateway can be actually local interface address, * so that gatewayed route is direct. * b) gateway must be on-link address, possibly * described not by an ifaddr, but also by a direct route. * c) If both gateway and interface are specified, they should not * contradict. * d) If we use tunnel routes, gateway could be not on-link. * * Attempt to reconcile all of these (alas, self-contradictory) conditions * results in pretty ugly and hairy code with obscure logic. * * I chose to generalized it instead, so that the size * of code does not increase practically, but it becomes * much more general. * Every prefix is assigned a "scope" value: "host" is local address, * "link" is direct route, * [ ... "site" ... "interior" ... ] * and "universe" is true gateway route with global meaning. * * Every prefix refers to a set of "nexthop"s (gw, oif), * where gw must have narrower scope. This recursion stops * when gw has LOCAL scope or if "nexthop" is declared ONLINK, * which means that gw is forced to be on link. * * Code is still hairy, but now it is apparently logically * consistent and very flexible. F.e. as by-product it allows * to co-exists in peace independent exterior and interior * routing processes. * * Normally it looks as following. * * {universe prefix} -> (gw, oif) [scope link] * | * |-> {link prefix} -> (gw, oif) [scope local] * | * |-> {local prefix} (terminal node) */ static int fib_check_nh_v4_gw(struct net *net, struct fib_nh *nh, u32 table, u8 scope, struct netlink_ext_ack *extack) { struct net_device *dev; struct fib_result res; int err = 0; if (nh->fib_nh_flags & RTNH_F_ONLINK) { unsigned int addr_type; if (scope >= RT_SCOPE_LINK) { NL_SET_ERR_MSG(extack, "Nexthop has invalid scope"); return -EINVAL; } dev = __dev_get_by_index(net, nh->fib_nh_oif); if (!dev) { NL_SET_ERR_MSG(extack, "Nexthop device required for onlink"); return -ENODEV; } if (!(dev->flags & IFF_UP)) { NL_SET_ERR_MSG(extack, "Nexthop device is not up"); return -ENETDOWN; } addr_type = inet_addr_type_dev_table(net, dev, nh->fib_nh_gw4); if (addr_type != RTN_UNICAST) { NL_SET_ERR_MSG(extack, "Nexthop has invalid gateway"); return -EINVAL; } if (!netif_carrier_ok(dev)) nh->fib_nh_flags |= RTNH_F_LINKDOWN; nh->fib_nh_dev = dev; netdev_hold(dev, &nh->fib_nh_dev_tracker, GFP_ATOMIC); nh->fib_nh_scope = RT_SCOPE_LINK; return 0; } rcu_read_lock(); { struct fib_table *tbl = NULL; struct flowi4 fl4 = { .daddr = nh->fib_nh_gw4, .flowi4_scope = scope + 1, .flowi4_oif = nh->fib_nh_oif, .flowi4_iif = LOOPBACK_IFINDEX, }; /* It is not necessary, but requires a bit of thinking */ if (fl4.flowi4_scope < RT_SCOPE_LINK) fl4.flowi4_scope = RT_SCOPE_LINK; if (table && table != RT_TABLE_MAIN) tbl = fib_get_table(net, table); if (tbl) err = fib_table_lookup(tbl, &fl4, &res, FIB_LOOKUP_IGNORE_LINKSTATE | FIB_LOOKUP_NOREF); /* on error or if no table given do full lookup. This * is needed for example when nexthops are in the local * table rather than the given table */ if (!tbl || err) { err = fib_lookup(net, &fl4, &res, FIB_LOOKUP_IGNORE_LINKSTATE); } if (err) { NL_SET_ERR_MSG(extack, "Nexthop has invalid gateway"); goto out; } } err = -EINVAL; if (res.type != RTN_UNICAST && res.type != RTN_LOCAL) { NL_SET_ERR_MSG(extack, "Nexthop has invalid gateway"); goto out; } nh->fib_nh_scope = res.scope; nh->fib_nh_oif = FIB_RES_OIF(res); nh->fib_nh_dev = dev = FIB_RES_DEV(res); if (!dev) { NL_SET_ERR_MSG(extack, "No egress device for nexthop gateway"); goto out; } netdev_hold(dev, &nh->fib_nh_dev_tracker, GFP_ATOMIC); if (!netif_carrier_ok(dev)) nh->fib_nh_flags |= RTNH_F_LINKDOWN; err = (dev->flags & IFF_UP) ? 0 : -ENETDOWN; out: rcu_read_unlock(); return err; } static int fib_check_nh_nongw(struct net *net, struct fib_nh *nh, struct netlink_ext_ack *extack) { struct in_device *in_dev; int err; if (nh->fib_nh_flags & (RTNH_F_PERVASIVE | RTNH_F_ONLINK)) { NL_SET_ERR_MSG(extack, "Invalid flags for nexthop - PERVASIVE and ONLINK can not be set"); return -EINVAL; } rcu_read_lock(); err = -ENODEV; in_dev = inetdev_by_index(net, nh->fib_nh_oif); if (!in_dev) goto out; err = -ENETDOWN; if (!(in_dev->dev->flags & IFF_UP)) { NL_SET_ERR_MSG(extack, "Device for nexthop is not up"); goto out; } nh->fib_nh_dev = in_dev->dev; netdev_hold(nh->fib_nh_dev, &nh->fib_nh_dev_tracker, GFP_ATOMIC); nh->fib_nh_scope = RT_SCOPE_HOST; if (!netif_carrier_ok(nh->fib_nh_dev)) nh->fib_nh_flags |= RTNH_F_LINKDOWN; err = 0; out: rcu_read_unlock(); return err; } int fib_check_nh(struct net *net, struct fib_nh *nh, u32 table, u8 scope, struct netlink_ext_ack *extack) { int err; if (nh->fib_nh_gw_family == AF_INET) err = fib_check_nh_v4_gw(net, nh, table, scope, extack); else if (nh->fib_nh_gw_family == AF_INET6) err = fib_check_nh_v6_gw(net, nh, table, extack); else err = fib_check_nh_nongw(net, nh, extack); return err; } __be32 fib_info_update_nhc_saddr(struct net *net, struct fib_nh_common *nhc, unsigned char scope) { struct fib_nh *nh; __be32 saddr; if (nhc->nhc_family != AF_INET) return inet_select_addr(nhc->nhc_dev, 0, scope); nh = container_of(nhc, struct fib_nh, nh_common); saddr = inet_select_addr(nh->fib_nh_dev, nh->fib_nh_gw4, scope); WRITE_ONCE(nh->nh_saddr, saddr); WRITE_ONCE(nh->nh_saddr_genid, atomic_read(&net->ipv4.dev_addr_genid)); return saddr; } __be32 fib_result_prefsrc(struct net *net, struct fib_result *res) { struct fib_nh_common *nhc = res->nhc; if (res->fi->fib_prefsrc) return res->fi->fib_prefsrc; if (nhc->nhc_family == AF_INET) { struct fib_nh *nh; nh = container_of(nhc, struct fib_nh, nh_common); if (READ_ONCE(nh->nh_saddr_genid) == atomic_read(&net->ipv4.dev_addr_genid)) return READ_ONCE(nh->nh_saddr); } return fib_info_update_nhc_saddr(net, nhc, res->fi->fib_scope); } static bool fib_valid_prefsrc(struct fib_config *cfg, __be32 fib_prefsrc) { if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst || fib_prefsrc != cfg->fc_dst) { u32 tb_id = cfg->fc_table; int rc; if (tb_id == RT_TABLE_MAIN) tb_id = RT_TABLE_LOCAL; rc = inet_addr_type_table(cfg->fc_nlinfo.nl_net, fib_prefsrc, tb_id); if (rc != RTN_LOCAL && tb_id != RT_TABLE_LOCAL) { rc = inet_addr_type_table(cfg->fc_nlinfo.nl_net, fib_prefsrc, RT_TABLE_LOCAL); } if (rc != RTN_LOCAL) return false; } return true; } struct fib_info *fib_create_info(struct fib_config *cfg, struct netlink_ext_ack *extack) { int err; struct fib_info *fi = NULL; struct nexthop *nh = NULL; struct fib_info *ofi; int nhs = 1; struct net *net = cfg->fc_nlinfo.nl_net; ASSERT_RTNL(); if (cfg->fc_type > RTN_MAX) goto err_inval; /* Fast check to catch the most weird cases */ if (fib_props[cfg->fc_type].scope > cfg->fc_scope) { NL_SET_ERR_MSG(extack, "Invalid scope"); goto err_inval; } if (cfg->fc_flags & (RTNH_F_DEAD | RTNH_F_LINKDOWN)) { NL_SET_ERR_MSG(extack, "Invalid rtm_flags - can not contain DEAD or LINKDOWN"); goto err_inval; } if (cfg->fc_nh_id) { if (!cfg->fc_mx) { fi = fib_find_info_nh(net, cfg); if (fi) { refcount_inc(&fi->fib_treeref); return fi; } } nh = nexthop_find_by_id(net, cfg->fc_nh_id); if (!nh) { NL_SET_ERR_MSG(extack, "Nexthop id does not exist"); goto err_inval; } nhs = 0; } #ifdef CONFIG_IP_ROUTE_MULTIPATH if (cfg->fc_mp) { nhs = fib_count_nexthops(cfg->fc_mp, cfg->fc_mp_len, extack); if (nhs == 0) goto err_inval; } #endif fib_info_hash_grow(net); fi = kzalloc(struct_size(fi, fib_nh, nhs), GFP_KERNEL); if (!fi) { err = -ENOBUFS; goto failure; } fi->fib_metrics = ip_fib_metrics_init(cfg->fc_mx, cfg->fc_mx_len, extack); if (IS_ERR(fi->fib_metrics)) { err = PTR_ERR(fi->fib_metrics); kfree(fi); return ERR_PTR(err); } fi->fib_net = net; fi->fib_protocol = cfg->fc_protocol; fi->fib_scope = cfg->fc_scope; fi->fib_flags = cfg->fc_flags; fi->fib_priority = cfg->fc_priority; fi->fib_prefsrc = cfg->fc_prefsrc; fi->fib_type = cfg->fc_type; fi->fib_tb_id = cfg->fc_table; fi->fib_nhs = nhs; if (nh) { if (!nexthop_get(nh)) { NL_SET_ERR_MSG(extack, "Nexthop has been deleted"); err = -EINVAL; } else { err = 0; fi->nh = nh; } } else { change_nexthops(fi) { nexthop_nh->nh_parent = fi; } endfor_nexthops(fi) if (cfg->fc_mp) err = fib_get_nhs(fi, cfg->fc_mp, cfg->fc_mp_len, cfg, extack); else err = fib_nh_init(net, fi->fib_nh, cfg, 1, extack); } if (err != 0) goto failure; if (fib_props[cfg->fc_type].error) { if (cfg->fc_gw_family || cfg->fc_oif || cfg->fc_mp) { NL_SET_ERR_MSG(extack, "Gateway, device and multipath can not be specified for this route type"); goto err_inval; } goto link_it; } else { switch (cfg->fc_type) { case RTN_UNICAST: case RTN_LOCAL: case RTN_BROADCAST: case RTN_ANYCAST: case RTN_MULTICAST: break; default: NL_SET_ERR_MSG(extack, "Invalid route type"); goto err_inval; } } if (cfg->fc_scope > RT_SCOPE_HOST) { NL_SET_ERR_MSG(extack, "Invalid scope"); goto err_inval; } if (fi->nh) { err = fib_check_nexthop(fi->nh, cfg->fc_scope, extack); if (err) goto failure; } else if (cfg->fc_scope == RT_SCOPE_HOST) { struct fib_nh *nh = fi->fib_nh; /* Local address is added. */ if (nhs != 1) { NL_SET_ERR_MSG(extack, "Route with host scope can not have multiple nexthops"); goto err_inval; } if (nh->fib_nh_gw_family) { NL_SET_ERR_MSG(extack, "Route with host scope can not have a gateway"); goto err_inval; } nh->fib_nh_scope = RT_SCOPE_NOWHERE; nh->fib_nh_dev = dev_get_by_index(net, nh->fib_nh_oif); err = -ENODEV; if (!nh->fib_nh_dev) goto failure; netdev_tracker_alloc(nh->fib_nh_dev, &nh->fib_nh_dev_tracker, GFP_KERNEL); } else { int linkdown = 0; change_nexthops(fi) { err = fib_check_nh(cfg->fc_nlinfo.nl_net, nexthop_nh, cfg->fc_table, cfg->fc_scope, extack); if (err != 0) goto failure; if (nexthop_nh->fib_nh_flags & RTNH_F_LINKDOWN) linkdown++; } endfor_nexthops(fi) if (linkdown == fi->fib_nhs) fi->fib_flags |= RTNH_F_LINKDOWN; } if (fi->fib_prefsrc && !fib_valid_prefsrc(cfg, fi->fib_prefsrc)) { NL_SET_ERR_MSG(extack, "Invalid prefsrc address"); goto err_inval; } if (!fi->nh) { change_nexthops(fi) { fib_info_update_nhc_saddr(net, &nexthop_nh->nh_common, fi->fib_scope); if (nexthop_nh->fib_nh_gw_family == AF_INET6) fi->fib_nh_is_v6 = true; } endfor_nexthops(fi) fib_rebalance(fi); } link_it: ofi = fib_find_info(fi); if (ofi) { /* fib_table_lookup() should not see @fi yet. */ fi->fib_dead = 1; free_fib_info(fi); refcount_inc(&ofi->fib_treeref); return ofi; } refcount_set(&fi->fib_treeref, 1); refcount_set(&fi->fib_clntref, 1); net->ipv4.fib_info_cnt++; hlist_add_head(&fi->fib_hash, fib_info_hash_bucket(fi)); if (fi->fib_prefsrc) { struct hlist_head *head; head = fib_info_laddrhash_bucket(net, fi->fib_prefsrc); hlist_add_head(&fi->fib_lhash, head); } if (fi->nh) { list_add(&fi->nh_list, &nh->fi_list); } else { change_nexthops(fi) { struct hlist_head *head; if (!nexthop_nh->fib_nh_dev) continue; head = fib_nh_head(nexthop_nh->fib_nh_dev); hlist_add_head_rcu(&nexthop_nh->nh_hash, head); } endfor_nexthops(fi) } return fi; err_inval: err = -EINVAL; failure: if (fi) { /* fib_table_lookup() should not see @fi yet. */ fi->fib_dead = 1; free_fib_info(fi); } return ERR_PTR(err); } int fib_nexthop_info(struct sk_buff *skb, const struct fib_nh_common *nhc, u8 rt_family, unsigned char *flags, bool skip_oif) { if (nhc->nhc_flags & RTNH_F_DEAD) *flags |= RTNH_F_DEAD; if (nhc->nhc_flags & RTNH_F_LINKDOWN) { *flags |= RTNH_F_LINKDOWN; rcu_read_lock(); switch (nhc->nhc_family) { case AF_INET: if (ip_ignore_linkdown(nhc->nhc_dev)) *flags |= RTNH_F_DEAD; break; case AF_INET6: if (ip6_ignore_linkdown(nhc->nhc_dev)) *flags |= RTNH_F_DEAD; break; } rcu_read_unlock(); } switch (nhc->nhc_gw_family) { case AF_INET: if (nla_put_in_addr(skb, RTA_GATEWAY, nhc->nhc_gw.ipv4)) goto nla_put_failure; break; case AF_INET6: /* if gateway family does not match nexthop family * gateway is encoded as RTA_VIA */ if (rt_family != nhc->nhc_gw_family) { int alen = sizeof(struct in6_addr); struct nlattr *nla; struct rtvia *via; nla = nla_reserve(skb, RTA_VIA, alen + 2); if (!nla) goto nla_put_failure; via = nla_data(nla); via->rtvia_family = AF_INET6; memcpy(via->rtvia_addr, &nhc->nhc_gw.ipv6, alen); } else if (nla_put_in6_addr(skb, RTA_GATEWAY, &nhc->nhc_gw.ipv6) < 0) { goto nla_put_failure; } break; } *flags |= (nhc->nhc_flags & (RTNH_F_ONLINK | RTNH_F_OFFLOAD | RTNH_F_TRAP)); if (!skip_oif && nhc->nhc_dev && nla_put_u32(skb, RTA_OIF, nhc->nhc_dev->ifindex)) goto nla_put_failure; if (lwtunnel_fill_encap(skb, nhc->nhc_lwtstate, RTA_ENCAP, RTA_ENCAP_TYPE) < 0) goto nla_put_failure; return 0; nla_put_failure: return -EMSGSIZE; } EXPORT_SYMBOL_GPL(fib_nexthop_info); #if IS_ENABLED(CONFIG_IP_ROUTE_MULTIPATH) || IS_ENABLED(CONFIG_IPV6) int fib_add_nexthop(struct sk_buff *skb, const struct fib_nh_common *nhc, int nh_weight, u8 rt_family, u32 nh_tclassid) { const struct net_device *dev = nhc->nhc_dev; struct rtnexthop *rtnh; unsigned char flags = 0; rtnh = nla_reserve_nohdr(skb, sizeof(*rtnh)); if (!rtnh) goto nla_put_failure; rtnh->rtnh_hops = nh_weight - 1; rtnh->rtnh_ifindex = dev ? dev->ifindex : 0; if (fib_nexthop_info(skb, nhc, rt_family, &flags, true) < 0) goto nla_put_failure; rtnh->rtnh_flags = flags; if (nh_tclassid && nla_put_u32(skb, RTA_FLOW, nh_tclassid)) goto nla_put_failure; /* length of rtnetlink header + attributes */ rtnh->rtnh_len = nlmsg_get_pos(skb) - (void *)rtnh; return 0; nla_put_failure: return -EMSGSIZE; } EXPORT_SYMBOL_GPL(fib_add_nexthop); #endif #ifdef CONFIG_IP_ROUTE_MULTIPATH static int fib_add_multipath(struct sk_buff *skb, struct fib_info *fi) { struct nlattr *mp; mp = nla_nest_start_noflag(skb, RTA_MULTIPATH); if (!mp) goto nla_put_failure; if (unlikely(fi->nh)) { if (nexthop_mpath_fill_node(skb, fi->nh, AF_INET) < 0) goto nla_put_failure; goto mp_end; } for_nexthops(fi) { u32 nh_tclassid = 0; #ifdef CONFIG_IP_ROUTE_CLASSID nh_tclassid = nh->nh_tclassid; #endif if (fib_add_nexthop(skb, &nh->nh_common, nh->fib_nh_weight, AF_INET, nh_tclassid) < 0) goto nla_put_failure; } endfor_nexthops(fi); mp_end: nla_nest_end(skb, mp); return 0; nla_put_failure: return -EMSGSIZE; } #else static int fib_add_multipath(struct sk_buff *skb, struct fib_info *fi) { return 0; } #endif int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event, const struct fib_rt_info *fri, unsigned int flags) { unsigned int nhs = fib_info_num_path(fri->fi); struct fib_info *fi = fri->fi; u32 tb_id = fri->tb_id; struct nlmsghdr *nlh; struct rtmsg *rtm; nlh = nlmsg_put(skb, portid, seq, event, sizeof(*rtm), flags); if (!nlh) return -EMSGSIZE; rtm = nlmsg_data(nlh); rtm->rtm_family = AF_INET; rtm->rtm_dst_len = fri->dst_len; rtm->rtm_src_len = 0; rtm->rtm_tos = inet_dscp_to_dsfield(fri->dscp); if (tb_id < 256) rtm->rtm_table = tb_id; else rtm->rtm_table = RT_TABLE_COMPAT; if (nla_put_u32(skb, RTA_TABLE, tb_id)) goto nla_put_failure; rtm->rtm_type = fri->type; rtm->rtm_flags = fi->fib_flags; rtm->rtm_scope = fi->fib_scope; rtm->rtm_protocol = fi->fib_protocol; if (rtm->rtm_dst_len && nla_put_in_addr(skb, RTA_DST, fri->dst)) goto nla_put_failure; if (fi->fib_priority && nla_put_u32(skb, RTA_PRIORITY, fi->fib_priority)) goto nla_put_failure; if (rtnetlink_put_metrics(skb, fi->fib_metrics->metrics) < 0) goto nla_put_failure; if (fi->fib_prefsrc && nla_put_in_addr(skb, RTA_PREFSRC, fi->fib_prefsrc)) goto nla_put_failure; if (fi->nh) { if (nla_put_u32(skb, RTA_NH_ID, fi->nh->id)) goto nla_put_failure; if (nexthop_is_blackhole(fi->nh)) rtm->rtm_type = RTN_BLACKHOLE; if (!READ_ONCE(fi->fib_net->ipv4.sysctl_nexthop_compat_mode)) goto offload; } if (nhs == 1) { const struct fib_nh_common *nhc = fib_info_nhc(fi, 0); unsigned char flags = 0; if (fib_nexthop_info(skb, nhc, AF_INET, &flags, false) < 0) goto nla_put_failure; rtm->rtm_flags = flags; #ifdef CONFIG_IP_ROUTE_CLASSID if (nhc->nhc_family == AF_INET) { struct fib_nh *nh; nh = container_of(nhc, struct fib_nh, nh_common); if (nh->nh_tclassid && nla_put_u32(skb, RTA_FLOW, nh->nh_tclassid)) goto nla_put_failure; } #endif } else { if (fib_add_multipath(skb, fi) < 0) goto nla_put_failure; } offload: if (fri->offload) rtm->rtm_flags |= RTM_F_OFFLOAD; if (fri->trap) rtm->rtm_flags |= RTM_F_TRAP; if (fri->offload_failed) rtm->rtm_flags |= RTM_F_OFFLOAD_FAILED; nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } /* * Update FIB if: * - local address disappeared -> we must delete all the entries * referring to it. * - device went down -> we must shutdown all nexthops going via it. */ int fib_sync_down_addr(struct net_device *dev, __be32 local) { int tb_id = l3mdev_fib_table(dev) ? : RT_TABLE_MAIN; struct net *net = dev_net(dev); struct hlist_head *head; struct fib_info *fi; int ret = 0; if (!local) return 0; head = fib_info_laddrhash_bucket(net, local); hlist_for_each_entry(fi, head, fib_lhash) { if (!net_eq(fi->fib_net, net) || fi->fib_tb_id != tb_id) continue; if (fi->fib_prefsrc == local) { fi->fib_flags |= RTNH_F_DEAD; fi->pfsrc_removed = true; ret++; } } return ret; } static int call_fib_nh_notifiers(struct fib_nh *nh, enum fib_event_type event_type) { bool ignore_link_down = ip_ignore_linkdown(nh->fib_nh_dev); struct fib_nh_notifier_info info = { .fib_nh = nh, }; switch (event_type) { case FIB_EVENT_NH_ADD: if (nh->fib_nh_flags & RTNH_F_DEAD) break; if (ignore_link_down && nh->fib_nh_flags & RTNH_F_LINKDOWN) break; return call_fib4_notifiers(dev_net(nh->fib_nh_dev), event_type, &info.info); case FIB_EVENT_NH_DEL: if ((ignore_link_down && nh->fib_nh_flags & RTNH_F_LINKDOWN) || (nh->fib_nh_flags & RTNH_F_DEAD)) return call_fib4_notifiers(dev_net(nh->fib_nh_dev), event_type, &info.info); break; default: break; } return NOTIFY_DONE; } /* Update the PMTU of exceptions when: * - the new MTU of the first hop becomes smaller than the PMTU * - the old MTU was the same as the PMTU, and it limited discovery of * larger MTUs on the path. With that limit raised, we can now * discover larger MTUs * A special case is locked exceptions, for which the PMTU is smaller * than the minimal accepted PMTU: * - if the new MTU is greater than the PMTU, don't make any change * - otherwise, unlock and set PMTU */ void fib_nhc_update_mtu(struct fib_nh_common *nhc, u32 new, u32 orig) { struct fnhe_hash_bucket *bucket; int i; bucket = rcu_dereference_protected(nhc->nhc_exceptions, 1); if (!bucket) return; for (i = 0; i < FNHE_HASH_SIZE; i++) { struct fib_nh_exception *fnhe; for (fnhe = rcu_dereference_protected(bucket[i].chain, 1); fnhe; fnhe = rcu_dereference_protected(fnhe->fnhe_next, 1)) { if (fnhe->fnhe_mtu_locked) { if (new <= fnhe->fnhe_pmtu) { fnhe->fnhe_pmtu = new; fnhe->fnhe_mtu_locked = false; } } else if (new < fnhe->fnhe_pmtu || orig == fnhe->fnhe_pmtu) { fnhe->fnhe_pmtu = new; } } } } void fib_sync_mtu(struct net_device *dev, u32 orig_mtu) { struct hlist_head *head = fib_nh_head(dev); struct fib_nh *nh; hlist_for_each_entry(nh, head, nh_hash) { DEBUG_NET_WARN_ON_ONCE(nh->fib_nh_dev != dev); fib_nhc_update_mtu(&nh->nh_common, dev->mtu, orig_mtu); } } /* Event force Flags Description * NETDEV_CHANGE 0 LINKDOWN Carrier OFF, not for scope host * NETDEV_DOWN 0 LINKDOWN|DEAD Link down, not for scope host * NETDEV_DOWN 1 LINKDOWN|DEAD Last address removed * NETDEV_UNREGISTER 1 LINKDOWN|DEAD Device removed * * only used when fib_nh is built into fib_info */ int fib_sync_down_dev(struct net_device *dev, unsigned long event, bool force) { struct hlist_head *head = fib_nh_head(dev); struct fib_info *prev_fi = NULL; int scope = RT_SCOPE_NOWHERE; struct fib_nh *nh; int ret = 0; if (force) scope = -1; hlist_for_each_entry(nh, head, nh_hash) { struct fib_info *fi = nh->nh_parent; int dead; BUG_ON(!fi->fib_nhs); DEBUG_NET_WARN_ON_ONCE(nh->fib_nh_dev != dev); if (fi == prev_fi) continue; prev_fi = fi; dead = 0; change_nexthops(fi) { if (nexthop_nh->fib_nh_flags & RTNH_F_DEAD) dead++; else if (nexthop_nh->fib_nh_dev == dev && nexthop_nh->fib_nh_scope != scope) { switch (event) { case NETDEV_DOWN: case NETDEV_UNREGISTER: nexthop_nh->fib_nh_flags |= RTNH_F_DEAD; fallthrough; case NETDEV_CHANGE: nexthop_nh->fib_nh_flags |= RTNH_F_LINKDOWN; break; } call_fib_nh_notifiers(nexthop_nh, FIB_EVENT_NH_DEL); dead++; } #ifdef CONFIG_IP_ROUTE_MULTIPATH if (event == NETDEV_UNREGISTER && nexthop_nh->fib_nh_dev == dev) { dead = fi->fib_nhs; break; } #endif } endfor_nexthops(fi) if (dead == fi->fib_nhs) { switch (event) { case NETDEV_DOWN: case NETDEV_UNREGISTER: fi->fib_flags |= RTNH_F_DEAD; fallthrough; case NETDEV_CHANGE: fi->fib_flags |= RTNH_F_LINKDOWN; break; } ret++; } fib_rebalance(fi); } return ret; } /* Must be invoked inside of an RCU protected region. */ static void fib_select_default(const struct flowi4 *flp, struct fib_result *res) { struct fib_info *fi = NULL, *last_resort = NULL; struct hlist_head *fa_head = res->fa_head; struct fib_table *tb = res->table; u8 slen = 32 - res->prefixlen; int order = -1, last_idx = -1; struct fib_alias *fa, *fa1 = NULL; u32 last_prio = res->fi->fib_priority; dscp_t last_dscp = 0; hlist_for_each_entry_rcu(fa, fa_head, fa_list) { struct fib_info *next_fi = fa->fa_info; struct fib_nh_common *nhc; if (fa->fa_slen != slen) continue; if (fa->fa_dscp && !fib_dscp_masked_match(fa->fa_dscp, flp)) continue; if (fa->tb_id != tb->tb_id) continue; if (next_fi->fib_priority > last_prio && fa->fa_dscp == last_dscp) { if (last_dscp) continue; break; } if (next_fi->fib_flags & RTNH_F_DEAD) continue; last_dscp = fa->fa_dscp; last_prio = next_fi->fib_priority; if (next_fi->fib_scope != res->scope || fa->fa_type != RTN_UNICAST) continue; nhc = fib_info_nhc(next_fi, 0); if (!nhc->nhc_gw_family || nhc->nhc_scope != RT_SCOPE_LINK) continue; fib_alias_accessed(fa); if (!fi) { if (next_fi != res->fi) break; fa1 = fa; } else if (!fib_detect_death(fi, order, &last_resort, &last_idx, fa1->fa_default)) { fib_result_assign(res, fi); fa1->fa_default = order; goto out; } fi = next_fi; order++; } if (order <= 0 || !fi) { if (fa1) fa1->fa_default = -1; goto out; } if (!fib_detect_death(fi, order, &last_resort, &last_idx, fa1->fa_default)) { fib_result_assign(res, fi); fa1->fa_default = order; goto out; } if (last_idx >= 0) fib_result_assign(res, last_resort); fa1->fa_default = last_idx; out: return; } /* * Dead device goes up. We wake up dead nexthops. * It takes sense only on multipath routes. * * only used when fib_nh is built into fib_info */ int fib_sync_up(struct net_device *dev, unsigned char nh_flags) { struct fib_info *prev_fi; struct hlist_head *head; struct fib_nh *nh; int ret; if (!(dev->flags & IFF_UP)) return 0; if (nh_flags & RTNH_F_DEAD) { unsigned int flags = netif_get_flags(dev); if (flags & (IFF_RUNNING | IFF_LOWER_UP)) nh_flags |= RTNH_F_LINKDOWN; } prev_fi = NULL; head = fib_nh_head(dev); ret = 0; hlist_for_each_entry(nh, head, nh_hash) { struct fib_info *fi = nh->nh_parent; int alive; BUG_ON(!fi->fib_nhs); DEBUG_NET_WARN_ON_ONCE(nh->fib_nh_dev != dev); if (fi == prev_fi) continue; prev_fi = fi; alive = 0; change_nexthops(fi) { if (!(nexthop_nh->fib_nh_flags & nh_flags)) { alive++; continue; } if (!nexthop_nh->fib_nh_dev || !(nexthop_nh->fib_nh_dev->flags & IFF_UP)) continue; if (nexthop_nh->fib_nh_dev != dev || !__in_dev_get_rtnl(dev)) continue; alive++; nexthop_nh->fib_nh_flags &= ~nh_flags; call_fib_nh_notifiers(nexthop_nh, FIB_EVENT_NH_ADD); } endfor_nexthops(fi) if (alive > 0) { fi->fib_flags &= ~nh_flags; ret++; } fib_rebalance(fi); } return ret; } #ifdef CONFIG_IP_ROUTE_MULTIPATH static bool fib_good_nh(const struct fib_nh *nh) { int state = NUD_REACHABLE; if (nh->fib_nh_scope == RT_SCOPE_LINK) { struct neighbour *n; rcu_read_lock(); if (likely(nh->fib_nh_gw_family == AF_INET)) n = __ipv4_neigh_lookup_noref(nh->fib_nh_dev, (__force u32)nh->fib_nh_gw4); else if (nh->fib_nh_gw_family == AF_INET6) n = __ipv6_neigh_lookup_noref_stub(nh->fib_nh_dev, &nh->fib_nh_gw6); else n = NULL; if (n) state = READ_ONCE(n->nud_state); rcu_read_unlock(); } return !!(state & NUD_VALID); } void fib_select_multipath(struct fib_result *res, int hash, const struct flowi4 *fl4) { struct fib_info *fi = res->fi; struct net *net = fi->fib_net; bool found = false; bool use_neigh; __be32 saddr; if (unlikely(res->fi->nh)) { nexthop_path_fib_result(res, hash); return; } use_neigh = READ_ONCE(net->ipv4.sysctl_fib_multipath_use_neigh); saddr = fl4 ? fl4->saddr : 0; change_nexthops(fi) { int nh_upper_bound; /* Nexthops without a carrier are assigned an upper bound of * minus one when "ignore_routes_with_linkdown" is set. */ nh_upper_bound = atomic_read(&nexthop_nh->fib_nh_upper_bound); if (nh_upper_bound == -1 || (use_neigh && !fib_good_nh(nexthop_nh))) continue; if (!found) { res->nh_sel = nhsel; res->nhc = &nexthop_nh->nh_common; found = !saddr || nexthop_nh->nh_saddr == saddr; } if (hash > nh_upper_bound) continue; if (!saddr || nexthop_nh->nh_saddr == saddr) { res->nh_sel = nhsel; res->nhc = &nexthop_nh->nh_common; return; } if (found) return; } endfor_nexthops(fi); } #endif void fib_select_path(struct net *net, struct fib_result *res, struct flowi4 *fl4, const struct sk_buff *skb) { if (fl4->flowi4_oif) goto check_saddr; #ifdef CONFIG_IP_ROUTE_MULTIPATH if (fib_info_num_path(res->fi) > 1) { int h = fib_multipath_hash(net, fl4, skb, NULL); fib_select_multipath(res, h, fl4); } else #endif if (!res->prefixlen && res->table->tb_num_default > 1 && res->type == RTN_UNICAST) fib_select_default(fl4, res); check_saddr: if (!fl4->saddr) { struct net_device *l3mdev; l3mdev = dev_get_by_index_rcu(net, fl4->flowi4_l3mdev); if (!l3mdev || l3mdev_master_dev_rcu(FIB_RES_DEV(*res)) == l3mdev) fl4->saddr = fib_result_prefsrc(net, res); else fl4->saddr = inet_select_addr(l3mdev, 0, RT_SCOPE_LINK); } } int __net_init fib4_semantics_init(struct net *net) { unsigned int hash_bits = 4; net->ipv4.fib_info_hash = fib_info_hash_alloc(hash_bits); if (!net->ipv4.fib_info_hash) return -ENOMEM; net->ipv4.fib_info_hash_bits = hash_bits; net->ipv4.fib_info_cnt = 0; return 0; } void __net_exit fib4_semantics_exit(struct net *net) { fib_info_hash_free(net->ipv4.fib_info_hash); } |
| 4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | /* SPDX-License-Identifier: GPL-2.0-only */ /* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. */ #ifndef __LINUX_IOMMU_PRIV_H #define __LINUX_IOMMU_PRIV_H #include <linux/iommu.h> #include <linux/msi.h> static inline const struct iommu_ops *dev_iommu_ops(struct device *dev) { /* * Assume that valid ops must be installed if iommu_probe_device() * has succeeded. The device ops are essentially for internal use * within the IOMMU subsystem itself, so we should be able to trust * ourselves not to misuse the helper. */ return dev->iommu->iommu_dev->ops; } void dev_iommu_free(struct device *dev); const struct iommu_ops *iommu_ops_from_fwnode(const struct fwnode_handle *fwnode); static inline const struct iommu_ops *iommu_fwspec_ops(struct iommu_fwspec *fwspec) { return iommu_ops_from_fwnode(fwspec ? fwspec->iommu_fwnode : NULL); } void iommu_fwspec_free(struct device *dev); int iommu_device_register_bus(struct iommu_device *iommu, const struct iommu_ops *ops, const struct bus_type *bus, struct notifier_block *nb); void iommu_device_unregister_bus(struct iommu_device *iommu, const struct bus_type *bus, struct notifier_block *nb); int iommu_mock_device_add(struct device *dev, struct iommu_device *iommu); struct iommu_attach_handle *iommu_attach_handle_get(struct iommu_group *group, ioasid_t pasid, unsigned int type); int iommu_attach_group_handle(struct iommu_domain *domain, struct iommu_group *group, struct iommu_attach_handle *handle); void iommu_detach_group_handle(struct iommu_domain *domain, struct iommu_group *group); int iommu_replace_group_handle(struct iommu_group *group, struct iommu_domain *new_domain, struct iommu_attach_handle *handle); #if IS_ENABLED(CONFIG_IOMMUFD_DRIVER_CORE) && IS_ENABLED(CONFIG_IRQ_MSI_IOMMU) int iommufd_sw_msi(struct iommu_domain *domain, struct msi_desc *desc, phys_addr_t msi_addr); #else /* !CONFIG_IOMMUFD_DRIVER_CORE || !CONFIG_IRQ_MSI_IOMMU */ static inline int iommufd_sw_msi(struct iommu_domain *domain, struct msi_desc *desc, phys_addr_t msi_addr) { return -EOPNOTSUPP; } #endif /* CONFIG_IOMMUFD_DRIVER_CORE && CONFIG_IRQ_MSI_IOMMU */ int iommu_replace_device_pasid(struct iommu_domain *domain, struct device *dev, ioasid_t pasid, struct iommu_attach_handle *handle); #endif /* __LINUX_IOMMU_PRIV_H */ |
| 17 17 16 17 17 27 27 27 27 27 27 27 27 27 27 27 27 27 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 | // SPDX-License-Identifier: GPL-2.0-only /* * MLO link handling * * Copyright (C) 2022-2025 Intel Corporation */ #include <linux/slab.h> #include <linux/kernel.h> #include <net/mac80211.h> #include "ieee80211_i.h" #include "driver-ops.h" #include "key.h" #include "debugfs_netdev.h" static void ieee80211_update_apvlan_links(struct ieee80211_sub_if_data *sdata) { struct ieee80211_sub_if_data *vlan; struct ieee80211_link_data *link; u16 ap_bss_links = sdata->vif.valid_links; u16 new_links, vlan_links; unsigned long add; list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { int link_id; if (!vlan) continue; /* No support for 4addr with MLO yet */ if (vlan->wdev.use_4addr) return; vlan_links = vlan->vif.valid_links; new_links = ap_bss_links; add = new_links & ~vlan_links; if (!add) continue; ieee80211_vif_set_links(vlan, add, 0); for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) { link = sdata_dereference(vlan->link[link_id], vlan); ieee80211_link_vlan_copy_chanctx(link); } } } void ieee80211_apvlan_link_setup(struct ieee80211_sub_if_data *sdata) { struct ieee80211_sub_if_data *ap_bss = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); u16 new_links = ap_bss->vif.valid_links; unsigned long add; int link_id; if (!ap_bss->vif.valid_links) return; add = new_links; for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) { sdata->wdev.valid_links |= BIT(link_id); ether_addr_copy(sdata->wdev.links[link_id].addr, ap_bss->wdev.links[link_id].addr); } ieee80211_vif_set_links(sdata, new_links, 0); } void ieee80211_apvlan_link_clear(struct ieee80211_sub_if_data *sdata) { if (!sdata->wdev.valid_links) return; sdata->wdev.valid_links = 0; ieee80211_vif_clear_links(sdata); } void ieee80211_link_setup(struct ieee80211_link_data *link) { if (link->sdata->vif.type == NL80211_IFTYPE_STATION) ieee80211_mgd_setup_link(link); } void ieee80211_link_init(struct ieee80211_sub_if_data *sdata, int link_id, struct ieee80211_link_data *link, struct ieee80211_bss_conf *link_conf) { bool deflink = link_id < 0; if (link_id < 0) link_id = 0; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { struct ieee80211_sub_if_data *ap_bss; struct ieee80211_bss_conf *ap_bss_conf; ap_bss = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); ap_bss_conf = sdata_dereference(ap_bss->vif.link_conf[link_id], ap_bss); memcpy(link_conf, ap_bss_conf, sizeof(*link_conf)); } link->sdata = sdata; link->link_id = link_id; link->conf = link_conf; link_conf->link_id = link_id; link_conf->vif = &sdata->vif; link->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; link->user_power_level = sdata->local->user_power_level; link_conf->txpower = INT_MIN; wiphy_work_init(&link->csa.finalize_work, ieee80211_csa_finalize_work); wiphy_work_init(&link->color_change_finalize_work, ieee80211_color_change_finalize_work); wiphy_delayed_work_init(&link->color_collision_detect_work, ieee80211_color_collision_detection_work); INIT_LIST_HEAD(&link->assigned_chanctx_list); INIT_LIST_HEAD(&link->reserved_chanctx_list); wiphy_delayed_work_init(&link->dfs_cac_timer_work, ieee80211_dfs_cac_timer_work); if (!deflink) { switch (sdata->vif.type) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: ether_addr_copy(link_conf->addr, sdata->wdev.links[link_id].addr); link_conf->bssid = link_conf->addr; WARN_ON(!(sdata->wdev.valid_links & BIT(link_id))); break; case NL80211_IFTYPE_STATION: /* station sets the bssid in ieee80211_mgd_setup_link */ break; default: WARN_ON(1); } ieee80211_link_debugfs_add(link); } rcu_assign_pointer(sdata->vif.link_conf[link_id], link_conf); rcu_assign_pointer(sdata->link[link_id], link); } void ieee80211_link_stop(struct ieee80211_link_data *link) { if (link->sdata->vif.type == NL80211_IFTYPE_STATION) ieee80211_mgd_stop_link(link); wiphy_delayed_work_cancel(link->sdata->local->hw.wiphy, &link->color_collision_detect_work); wiphy_work_cancel(link->sdata->local->hw.wiphy, &link->color_change_finalize_work); wiphy_work_cancel(link->sdata->local->hw.wiphy, &link->csa.finalize_work); if (link->sdata->wdev.links[link->link_id].cac_started) { wiphy_delayed_work_cancel(link->sdata->local->hw.wiphy, &link->dfs_cac_timer_work); cfg80211_cac_event(link->sdata->dev, &link->conf->chanreq.oper, NL80211_RADAR_CAC_ABORTED, GFP_KERNEL, link->link_id); } ieee80211_link_release_channel(link); } struct link_container { struct ieee80211_link_data data; struct ieee80211_bss_conf conf; }; static void ieee80211_tear_down_links(struct ieee80211_sub_if_data *sdata, struct link_container **links, u16 mask) { struct ieee80211_link_data *link; LIST_HEAD(keys); unsigned int link_id; for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { if (!(mask & BIT(link_id))) continue; link = &links[link_id]->data; if (link_id == 0 && !link) link = &sdata->deflink; if (WARN_ON(!link)) continue; ieee80211_remove_link_keys(link, &keys); ieee80211_link_debugfs_remove(link); ieee80211_link_stop(link); } synchronize_rcu(); ieee80211_free_key_list(sdata->local, &keys); } static void ieee80211_free_links(struct ieee80211_sub_if_data *sdata, struct link_container **links) { unsigned int link_id; for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) kfree(links[link_id]); } static int ieee80211_check_dup_link_addrs(struct ieee80211_sub_if_data *sdata) { unsigned int i, j; for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { struct ieee80211_link_data *link1; link1 = sdata_dereference(sdata->link[i], sdata); if (!link1) continue; for (j = i + 1; j < IEEE80211_MLD_MAX_NUM_LINKS; j++) { struct ieee80211_link_data *link2; link2 = sdata_dereference(sdata->link[j], sdata); if (!link2) continue; if (ether_addr_equal(link1->conf->addr, link2->conf->addr)) return -EALREADY; } } return 0; } static void ieee80211_set_vif_links_bitmaps(struct ieee80211_sub_if_data *sdata, u16 valid_links, u16 dormant_links) { sdata->vif.valid_links = valid_links; sdata->vif.dormant_links = dormant_links; if (!valid_links || WARN((~valid_links & dormant_links) || !(valid_links & ~dormant_links), "Invalid links: valid=0x%x, dormant=0x%x", valid_links, dormant_links)) { sdata->vif.active_links = 0; sdata->vif.dormant_links = 0; return; } switch (sdata->vif.type) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: /* in an AP all links are always active */ sdata->vif.active_links = valid_links; /* AP links are not expected to be disabled */ WARN_ON(dormant_links); break; case NL80211_IFTYPE_STATION: if (sdata->vif.active_links) break; sdata->vif.active_links = valid_links & ~dormant_links; WARN_ON(hweight16(sdata->vif.active_links) > 1); break; default: WARN_ON(1); } } static int ieee80211_vif_update_links(struct ieee80211_sub_if_data *sdata, struct link_container **to_free, u16 new_links, u16 dormant_links) { u16 old_links = sdata->vif.valid_links; u16 old_active = sdata->vif.active_links; unsigned long add = new_links & ~old_links; unsigned long rem = old_links & ~new_links; unsigned int link_id; int ret; struct link_container *links[IEEE80211_MLD_MAX_NUM_LINKS] = {}, *link; struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS]; struct ieee80211_link_data *old_data[IEEE80211_MLD_MAX_NUM_LINKS]; bool use_deflink = old_links == 0; /* set for error case */ lockdep_assert_wiphy(sdata->local->hw.wiphy); memset(to_free, 0, sizeof(links)); if (old_links == new_links && dormant_links == sdata->vif.dormant_links) return 0; /* if there were no old links, need to clear the pointers to deflink */ if (!old_links) rem |= BIT(0); /* allocate new link structures first */ for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) { link = kzalloc(sizeof(*link), GFP_KERNEL); if (!link) { ret = -ENOMEM; goto free; } links[link_id] = link; } /* keep track of the old pointers for the driver */ BUILD_BUG_ON(sizeof(old) != sizeof(sdata->vif.link_conf)); memcpy(old, sdata->vif.link_conf, sizeof(old)); /* and for us in error cases */ BUILD_BUG_ON(sizeof(old_data) != sizeof(sdata->link)); memcpy(old_data, sdata->link, sizeof(old_data)); /* grab old links to free later */ for_each_set_bit(link_id, &rem, IEEE80211_MLD_MAX_NUM_LINKS) { if (rcu_access_pointer(sdata->link[link_id]) != &sdata->deflink) { /* * we must have allocated the data through this path so * we know we can free both at the same time */ to_free[link_id] = container_of(rcu_access_pointer(sdata->link[link_id]), typeof(*links[link_id]), data); } RCU_INIT_POINTER(sdata->link[link_id], NULL); RCU_INIT_POINTER(sdata->vif.link_conf[link_id], NULL); } if (!old_links) ieee80211_debugfs_recreate_netdev(sdata, true); /* link them into data structures */ for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) { WARN_ON(!use_deflink && rcu_access_pointer(sdata->link[link_id]) == &sdata->deflink); link = links[link_id]; ieee80211_link_init(sdata, link_id, &link->data, &link->conf); ieee80211_link_setup(&link->data); } if (new_links == 0) ieee80211_link_init(sdata, -1, &sdata->deflink, &sdata->vif.bss_conf); ret = ieee80211_check_dup_link_addrs(sdata); if (!ret) { /* for keys we will not be able to undo this */ ieee80211_tear_down_links(sdata, to_free, rem); ieee80211_set_vif_links_bitmaps(sdata, new_links, dormant_links); /* tell the driver */ if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN) ret = drv_change_vif_links(sdata->local, sdata, old_links & old_active, new_links & sdata->vif.active_links, old); if (!new_links) ieee80211_debugfs_recreate_netdev(sdata, false); if (sdata->vif.type == NL80211_IFTYPE_AP) ieee80211_update_apvlan_links(sdata); } /* * Ignore errors if we are only removing links as removal should * always succeed */ if (!new_links) ret = 0; if (ret) { /* restore config */ memcpy(sdata->link, old_data, sizeof(old_data)); memcpy(sdata->vif.link_conf, old, sizeof(old)); ieee80211_set_vif_links_bitmaps(sdata, old_links, dormant_links); /* and free (only) the newly allocated links */ memset(to_free, 0, sizeof(links)); goto free; } /* use deflink/bss_conf again if and only if there are no more links */ use_deflink = new_links == 0; goto deinit; free: /* if we failed during allocation, only free all */ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { kfree(links[link_id]); links[link_id] = NULL; } deinit: if (use_deflink) ieee80211_link_init(sdata, -1, &sdata->deflink, &sdata->vif.bss_conf); return ret; } int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata, u16 new_links, u16 dormant_links) { struct link_container *links[IEEE80211_MLD_MAX_NUM_LINKS]; int ret; ret = ieee80211_vif_update_links(sdata, links, new_links, dormant_links); ieee80211_free_links(sdata, links); return ret; } static int _ieee80211_set_active_links(struct ieee80211_sub_if_data *sdata, u16 active_links) { struct ieee80211_bss_conf *link_confs[IEEE80211_MLD_MAX_NUM_LINKS]; struct ieee80211_local *local = sdata->local; u16 old_active = sdata->vif.active_links; unsigned long rem = old_active & ~active_links; unsigned long add = active_links & ~old_active; struct sta_info *sta; unsigned int link_id; int ret, i; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EINVAL; if (active_links & ~ieee80211_vif_usable_links(&sdata->vif)) return -EINVAL; /* nothing to do */ if (old_active == active_links) return 0; for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) link_confs[i] = sdata_dereference(sdata->vif.link_conf[i], sdata); if (add) { sdata->vif.active_links |= active_links; ret = drv_change_vif_links(local, sdata, old_active, sdata->vif.active_links, link_confs); if (ret) { sdata->vif.active_links = old_active; return ret; } } for_each_set_bit(link_id, &rem, IEEE80211_MLD_MAX_NUM_LINKS) { struct ieee80211_link_data *link; link = sdata_dereference(sdata->link[link_id], sdata); ieee80211_teardown_tdls_peers(link); __ieee80211_link_release_channel(link, true); /* * If CSA is (still) active while the link is deactivated, * just schedule the channel switch work for the time we * had previously calculated, and we'll take the process * from there. */ if (link->conf->csa_active) wiphy_delayed_work_queue(local->hw.wiphy, &link->u.mgd.csa.switch_work, link->u.mgd.csa.time - jiffies); } for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) { struct ieee80211_link_data *link; link = sdata_dereference(sdata->link[link_id], sdata); /* * This call really should not fail. Unfortunately, it appears * that this may happen occasionally with some drivers. Should * it happen, we are stuck in a bad place as going backwards is * not really feasible. * * So lets just tell link_use_channel that it must not fail to * assign the channel context (from mac80211's perspective) and * assume the driver is going to trigger a recovery flow if it * had a failure. * That really is not great nor guaranteed to work. But at least * the internal mac80211 state remains consistent and there is * a chance that we can recover. */ ret = _ieee80211_link_use_channel(link, &link->conf->chanreq, IEEE80211_CHANCTX_SHARED, true); WARN_ON_ONCE(ret); /* * inform about the link info changed parameters after all * stations are also added */ } list_for_each_entry(sta, &local->sta_list, list) { if (sdata != sta->sdata) continue; /* this is very temporary, but do it anyway */ __ieee80211_sta_recalc_aggregates(sta, old_active | active_links); ret = drv_change_sta_links(local, sdata, &sta->sta, old_active, old_active | active_links); WARN_ON_ONCE(ret); } ret = ieee80211_key_switch_links(sdata, rem, add); WARN_ON_ONCE(ret); list_for_each_entry(sta, &local->sta_list, list) { if (sdata != sta->sdata) continue; __ieee80211_sta_recalc_aggregates(sta, active_links); ret = drv_change_sta_links(local, sdata, &sta->sta, old_active | active_links, active_links); WARN_ON_ONCE(ret); /* * Do it again, just in case - the driver might very * well have called ieee80211_sta_recalc_aggregates() * from there when filling in the new links, which * would set it wrong since the vif's active links are * not switched yet... */ __ieee80211_sta_recalc_aggregates(sta, active_links); } for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) { struct ieee80211_link_data *link; link = sdata_dereference(sdata->link[link_id], sdata); ieee80211_mgd_set_link_qos_params(link); ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_ERP_SLOT | BSS_CHANGED_HT | BSS_CHANGED_BASIC_RATES | BSS_CHANGED_BSSID | BSS_CHANGED_CQM | BSS_CHANGED_QOS | BSS_CHANGED_TXPOWER | BSS_CHANGED_BANDWIDTH | BSS_CHANGED_TWT | BSS_CHANGED_HE_OBSS_PD | BSS_CHANGED_HE_BSS_COLOR); } old_active = sdata->vif.active_links; sdata->vif.active_links = active_links; if (rem) { ret = drv_change_vif_links(local, sdata, old_active, active_links, link_confs); WARN_ON_ONCE(ret); } return 0; } int ieee80211_set_active_links(struct ieee80211_vif *vif, u16 active_links) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_local *local = sdata->local; u16 old_active; int ret; lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON(!active_links)) return -EINVAL; old_active = sdata->vif.active_links; if (old_active == active_links) return 0; if (!drv_can_activate_links(local, sdata, active_links)) return -EINVAL; if (old_active & active_links) { /* * if there's at least one link that stays active across * the change then switch to it (to those) first, and * then enable the additional links */ ret = _ieee80211_set_active_links(sdata, old_active & active_links); if (!ret) ret = _ieee80211_set_active_links(sdata, active_links); } else { /* otherwise switch directly */ ret = _ieee80211_set_active_links(sdata, active_links); } return ret; } EXPORT_SYMBOL_GPL(ieee80211_set_active_links); void ieee80211_set_active_links_async(struct ieee80211_vif *vif, u16 active_links) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); if (WARN_ON(!active_links)) return; if (!ieee80211_sdata_running(sdata)) return; if (sdata->vif.type != NL80211_IFTYPE_STATION) return; if (active_links & ~ieee80211_vif_usable_links(&sdata->vif)) return; /* nothing to do */ if (sdata->vif.active_links == active_links) return; sdata->desired_active_links = active_links; wiphy_work_queue(sdata->local->hw.wiphy, &sdata->activate_links_work); } EXPORT_SYMBOL_GPL(ieee80211_set_active_links_async); |
| 7 1554 1554 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | /* SPDX-License-Identifier: GPL-2.0 */ /* * This file provides wrappers with sanitizer instrumentation for bit * locking operations. * * To use this functionality, an arch's bitops.h file needs to define each of * the below bit operations with an arch_ prefix (e.g. arch_set_bit(), * arch___set_bit(), etc.). */ #ifndef _ASM_GENERIC_BITOPS_INSTRUMENTED_LOCK_H #define _ASM_GENERIC_BITOPS_INSTRUMENTED_LOCK_H #include <linux/instrumented.h> /** * clear_bit_unlock - Clear a bit in memory, for unlock * @nr: the bit to set * @addr: the address to start counting from * * This operation is atomic and provides release barrier semantics. */ static inline void clear_bit_unlock(long nr, volatile unsigned long *addr) { kcsan_release(); instrument_atomic_write(addr + BIT_WORD(nr), sizeof(long)); arch_clear_bit_unlock(nr, addr); } /** * __clear_bit_unlock - Clears a bit in memory * @nr: Bit to clear * @addr: Address to start counting from * * This is a non-atomic operation but implies a release barrier before the * memory operation. It can be used for an unlock if no other CPUs can * concurrently modify other bits in the word. */ static inline void __clear_bit_unlock(long nr, volatile unsigned long *addr) { kcsan_release(); instrument_write(addr + BIT_WORD(nr), sizeof(long)); arch___clear_bit_unlock(nr, addr); } /** * test_and_set_bit_lock - Set a bit and return its old value, for lock * @nr: Bit to set * @addr: Address to count from * * This operation is atomic and provides acquire barrier semantics if * the returned value is 0. * It can be used to implement bit locks. */ static inline bool test_and_set_bit_lock(long nr, volatile unsigned long *addr) { instrument_atomic_read_write(addr + BIT_WORD(nr), sizeof(long)); return arch_test_and_set_bit_lock(nr, addr); } /** * xor_unlock_is_negative_byte - XOR a single byte in memory and test if * it is negative, for unlock. * @mask: Change the bits which are set in this mask. * @addr: The address of the word containing the byte to change. * * Changes some of bits 0-6 in the word pointed to by @addr. * This operation is atomic and provides release barrier semantics. * Used to optimise some folio operations which are commonly paired * with an unlock or end of writeback. Bit 7 is used as PG_waiters to * indicate whether anybody is waiting for the unlock. * * Return: Whether the top bit of the byte is set. */ static inline bool xor_unlock_is_negative_byte(unsigned long mask, volatile unsigned long *addr) { kcsan_release(); instrument_atomic_write(addr, sizeof(long)); return arch_xor_unlock_is_negative_byte(mask, addr); } #endif /* _ASM_GENERIC_BITOPS_INSTRUMENTED_LOCK_H */ |
| 142 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Because linux/module.h has tracepoints in the header, and ftrace.h * used to include this file, define_trace.h includes linux/module.h * But we do not want the module.h to override the TRACE_SYSTEM macro * variable that define_trace.h is processing, so we only set it * when module events are being processed, which would happen when * CREATE_TRACE_POINTS is defined. */ #ifdef CREATE_TRACE_POINTS #undef TRACE_SYSTEM #define TRACE_SYSTEM module #endif #if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_MODULE_H #include <linux/tracepoint.h> #ifdef CONFIG_MODULES struct module; #define show_module_flags(flags) __print_flags(flags, "", \ { (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \ { (1UL << TAINT_OOT_MODULE), "O" }, \ { (1UL << TAINT_FORCED_MODULE), "F" }, \ { (1UL << TAINT_CRAP), "C" }, \ { (1UL << TAINT_UNSIGNED_MODULE), "E" }) TRACE_EVENT(module_load, TP_PROTO(struct module *mod), TP_ARGS(mod), TP_STRUCT__entry( __field( unsigned int, taints ) __string( name, mod->name ) ), TP_fast_assign( __entry->taints = mod->taints; __assign_str(name); ), TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints)) ); TRACE_EVENT(module_free, TP_PROTO(struct module *mod), TP_ARGS(mod), TP_STRUCT__entry( __string( name, mod->name ) ), TP_fast_assign( __assign_str(name); ), TP_printk("%s", __get_str(name)) ); #ifdef CONFIG_MODULE_UNLOAD /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */ DECLARE_EVENT_CLASS(module_refcnt, TP_PROTO(struct module *mod, unsigned long ip), TP_ARGS(mod, ip), TP_STRUCT__entry( __field( unsigned long, ip ) __field( int, refcnt ) __string( name, mod->name ) ), TP_fast_assign( __entry->ip = ip; __entry->refcnt = atomic_read(&mod->refcnt); __assign_str(name); ), TP_printk("%s call_site=%ps refcnt=%d", __get_str(name), (void *)__entry->ip, __entry->refcnt) ); DEFINE_EVENT(module_refcnt, module_get, TP_PROTO(struct module *mod, unsigned long ip), TP_ARGS(mod, ip) ); DEFINE_EVENT(module_refcnt, module_put, TP_PROTO(struct module *mod, unsigned long ip), TP_ARGS(mod, ip) ); #endif /* CONFIG_MODULE_UNLOAD */ TRACE_EVENT(module_request, TP_PROTO(char *name, bool wait, unsigned long ip), TP_ARGS(name, wait, ip), TP_STRUCT__entry( __field( unsigned long, ip ) __field( bool, wait ) __string( name, name ) ), TP_fast_assign( __entry->ip = ip; __entry->wait = wait; __assign_str(name); ), TP_printk("%s wait=%d call_site=%ps", __get_str(name), (int)__entry->wait, (void *)__entry->ip) ); #endif /* CONFIG_MODULES */ #endif /* _TRACE_MODULE_H */ /* This part must be outside protection */ #include <trace/define_trace.h> |
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1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2016 Mellanox Technologies. All rights reserved. * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> */ #include "devl_internal.h" struct devlink_region { struct devlink *devlink; struct devlink_port *port; struct list_head list; union { const struct devlink_region_ops *ops; const struct devlink_port_region_ops *port_ops; }; struct mutex snapshot_lock; /* protects snapshot_list, * max_snapshots and cur_snapshots * consistency. */ struct list_head snapshot_list; u32 max_snapshots; u32 cur_snapshots; u64 size; }; struct devlink_snapshot { struct list_head list; struct devlink_region *region; u8 *data; u32 id; }; static struct devlink_region * devlink_region_get_by_name(struct devlink *devlink, const char *region_name) { struct devlink_region *region; list_for_each_entry(region, &devlink->region_list, list) if (!strcmp(region->ops->name, region_name)) return region; return NULL; } static struct devlink_region * devlink_port_region_get_by_name(struct devlink_port *port, const char *region_name) { struct devlink_region *region; list_for_each_entry(region, &port->region_list, list) if (!strcmp(region->ops->name, region_name)) return region; return NULL; } static struct devlink_snapshot * devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id) { struct devlink_snapshot *snapshot; list_for_each_entry(snapshot, ®ion->snapshot_list, list) if (snapshot->id == id) return snapshot; return NULL; } static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg, struct devlink *devlink, struct devlink_snapshot *snapshot) { struct nlattr *snap_attr; int err; snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT); if (!snap_attr) return -EMSGSIZE; err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id); if (err) goto nla_put_failure; nla_nest_end(msg, snap_attr); return 0; nla_put_failure: nla_nest_cancel(msg, snap_attr); return err; } static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg, struct devlink *devlink, struct devlink_region *region) { struct devlink_snapshot *snapshot; struct nlattr *snapshots_attr; int err; snapshots_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOTS); if (!snapshots_attr) return -EMSGSIZE; list_for_each_entry(snapshot, ®ion->snapshot_list, list) { err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot); if (err) goto nla_put_failure; } nla_nest_end(msg, snapshots_attr); return 0; nla_put_failure: nla_nest_cancel(msg, snapshots_attr); return err; } static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink, enum devlink_command cmd, u32 portid, u32 seq, int flags, struct devlink_region *region) { void *hdr; int err; hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); if (!hdr) return -EMSGSIZE; err = devlink_nl_put_handle(msg, devlink); if (err) goto nla_put_failure; if (region->port) { err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, region->port->index); if (err) goto nla_put_failure; } err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name); if (err) goto nla_put_failure; err = devlink_nl_put_u64(msg, DEVLINK_ATTR_REGION_SIZE, region->size); if (err) goto nla_put_failure; err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS, region->max_snapshots); if (err) goto nla_put_failure; err = devlink_nl_region_snapshots_id_put(msg, devlink, region); if (err) goto nla_put_failure; genlmsg_end(msg, hdr); return 0; nla_put_failure: genlmsg_cancel(msg, hdr); return err; } static struct sk_buff * devlink_nl_region_notify_build(struct devlink_region *region, struct devlink_snapshot *snapshot, enum devlink_command cmd, u32 portid, u32 seq) { struct devlink *devlink = region->devlink; struct sk_buff *msg; void *hdr; int err; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return ERR_PTR(-ENOMEM); hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd); if (!hdr) { err = -EMSGSIZE; goto out_free_msg; } err = devlink_nl_put_handle(msg, devlink); if (err) goto out_cancel_msg; if (region->port) { err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, region->port->index); if (err) goto out_cancel_msg; } err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name); if (err) goto out_cancel_msg; if (snapshot) { err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id); if (err) goto out_cancel_msg; } else { err = devlink_nl_put_u64(msg, DEVLINK_ATTR_REGION_SIZE, region->size); if (err) goto out_cancel_msg; } genlmsg_end(msg, hdr); return msg; out_cancel_msg: genlmsg_cancel(msg, hdr); out_free_msg: nlmsg_free(msg); return ERR_PTR(err); } static void devlink_nl_region_notify(struct devlink_region *region, struct devlink_snapshot *snapshot, enum devlink_command cmd) { struct devlink *devlink = region->devlink; struct sk_buff *msg; WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL); if (!__devl_is_registered(devlink) || !devlink_nl_notify_need(devlink)) return; msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0); if (IS_ERR(msg)) return; devlink_nl_notify_send(devlink, msg); } void devlink_regions_notify_register(struct devlink *devlink) { struct devlink_region *region; list_for_each_entry(region, &devlink->region_list, list) devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); } void devlink_regions_notify_unregister(struct devlink *devlink) { struct devlink_region *region; list_for_each_entry_reverse(region, &devlink->region_list, list) devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL); } /** * __devlink_snapshot_id_increment - Increment number of snapshots using an id * @devlink: devlink instance * @id: the snapshot id * * Track when a new snapshot begins using an id. Load the count for the * given id from the snapshot xarray, increment it, and store it back. * * Called when a new snapshot is created with the given id. * * The id *must* have been previously allocated by * devlink_region_snapshot_id_get(). * * Returns 0 on success, or an error on failure. */ static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id) { unsigned long count; void *p; int err; xa_lock(&devlink->snapshot_ids); p = xa_load(&devlink->snapshot_ids, id); if (WARN_ON(!p)) { err = -EINVAL; goto unlock; } if (WARN_ON(!xa_is_value(p))) { err = -EINVAL; goto unlock; } count = xa_to_value(p); count++; err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), GFP_ATOMIC)); unlock: xa_unlock(&devlink->snapshot_ids); return err; } /** * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id * @devlink: devlink instance * @id: the snapshot id * * Track when a snapshot is deleted and stops using an id. Load the count * for the given id from the snapshot xarray, decrement it, and store it * back. * * If the count reaches zero, erase this id from the xarray, freeing it * up for future re-use by devlink_region_snapshot_id_get(). * * Called when a snapshot using the given id is deleted, and when the * initial allocator of the id is finished using it. */ static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id) { unsigned long count; void *p; xa_lock(&devlink->snapshot_ids); p = xa_load(&devlink->snapshot_ids, id); if (WARN_ON(!p)) goto unlock; if (WARN_ON(!xa_is_value(p))) goto unlock; count = xa_to_value(p); if (count > 1) { count--; __xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), GFP_ATOMIC); } else { /* If this was the last user, we can erase this id */ __xa_erase(&devlink->snapshot_ids, id); } unlock: xa_unlock(&devlink->snapshot_ids); } /** * __devlink_snapshot_id_insert - Insert a specific snapshot ID * @devlink: devlink instance * @id: the snapshot id * * Mark the given snapshot id as used by inserting a zero value into the * snapshot xarray. * * This must be called while holding the devlink instance lock. Unlike * devlink_snapshot_id_get, the initial reference count is zero, not one. * It is expected that the id will immediately be used before * releasing the devlink instance lock. * * Returns zero on success, or an error code if the snapshot id could not * be inserted. */ static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id) { int err; xa_lock(&devlink->snapshot_ids); if (xa_load(&devlink->snapshot_ids, id)) { xa_unlock(&devlink->snapshot_ids); return -EEXIST; } err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(0), GFP_ATOMIC)); xa_unlock(&devlink->snapshot_ids); return err; } /** * __devlink_region_snapshot_id_get - get snapshot ID * @devlink: devlink instance * @id: storage to return snapshot id * * Allocates a new snapshot id. Returns zero on success, or a negative * error on failure. Must be called while holding the devlink instance * lock. * * Snapshot IDs are tracked using an xarray which stores the number of * users of the snapshot id. * * Note that the caller of this function counts as a 'user', in order to * avoid race conditions. The caller must release its hold on the * snapshot by using devlink_region_snapshot_id_put. */ static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) { return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1), xa_limit_32b, GFP_KERNEL); } /** * __devlink_region_snapshot_create - create a new snapshot * This will add a new snapshot of a region. The snapshot * will be stored on the region struct and can be accessed * from devlink. This is useful for future analyses of snapshots. * Multiple snapshots can be created on a region. * The @snapshot_id should be obtained using the getter function. * * Must be called only while holding the region snapshot lock. * * @region: devlink region of the snapshot * @data: snapshot data * @snapshot_id: snapshot id to be created */ static int __devlink_region_snapshot_create(struct devlink_region *region, u8 *data, u32 snapshot_id) { struct devlink *devlink = region->devlink; struct devlink_snapshot *snapshot; int err; lockdep_assert_held(®ion->snapshot_lock); /* check if region can hold one more snapshot */ if (region->cur_snapshots == region->max_snapshots) return -ENOSPC; if (devlink_region_snapshot_get_by_id(region, snapshot_id)) return -EEXIST; snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL); if (!snapshot) return -ENOMEM; err = __devlink_snapshot_id_increment(devlink, snapshot_id); if (err) goto err_snapshot_id_increment; snapshot->id = snapshot_id; snapshot->region = region; snapshot->data = data; list_add_tail(&snapshot->list, ®ion->snapshot_list); region->cur_snapshots++; devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW); return 0; err_snapshot_id_increment: kfree(snapshot); return err; } static void devlink_region_snapshot_del(struct devlink_region *region, struct devlink_snapshot *snapshot) { struct devlink *devlink = region->devlink; lockdep_assert_held(®ion->snapshot_lock); devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL); region->cur_snapshots--; list_del(&snapshot->list); region->ops->destructor(snapshot->data); __devlink_snapshot_id_decrement(devlink, snapshot->id); kfree(snapshot); } int devlink_nl_region_get_doit(struct sk_buff *skb, struct genl_info *info) { struct devlink *devlink = info->user_ptr[0]; struct devlink_port *port = NULL; struct devlink_region *region; const char *region_name; struct sk_buff *msg; unsigned int index; int err; if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME)) return -EINVAL; if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); port = devlink_port_get_by_index(devlink, index); if (!port) return -ENODEV; } region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); if (port) region = devlink_port_region_get_by_name(port, region_name); else region = devlink_region_get_by_name(devlink, region_name); if (!region) return -EINVAL; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET, info->snd_portid, info->snd_seq, 0, region); if (err) { nlmsg_free(msg); return err; } return genlmsg_reply(msg, info); } static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg, struct netlink_callback *cb, struct devlink_port *port, int *idx, int start, int flags) { struct devlink_region *region; int err = 0; list_for_each_entry(region, &port->region_list, list) { if (*idx < start) { (*idx)++; continue; } err = devlink_nl_region_fill(msg, port->devlink, DEVLINK_CMD_REGION_GET, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, flags, region); if (err) goto out; (*idx)++; } out: return err; } static int devlink_nl_region_get_dump_one(struct sk_buff *msg, struct devlink *devlink, struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_region *region; struct devlink_port *port; unsigned long port_index; int idx = 0; int err; list_for_each_entry(region, &devlink->region_list, list) { if (idx < state->idx) { idx++; continue; } err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, flags, region); if (err) { state->idx = idx; return err; } idx++; } xa_for_each(&devlink->ports, port_index, port) { err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, &idx, state->idx, flags); if (err) { state->idx = idx; return err; } } return 0; } int devlink_nl_region_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { return devlink_nl_dumpit(skb, cb, devlink_nl_region_get_dump_one); } int devlink_nl_region_del_doit(struct sk_buff *skb, struct genl_info *info) { struct devlink *devlink = info->user_ptr[0]; struct devlink_snapshot *snapshot; struct devlink_port *port = NULL; struct devlink_region *region; const char *region_name; unsigned int index; u32 snapshot_id; if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME) || GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_SNAPSHOT_ID)) return -EINVAL; region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); port = devlink_port_get_by_index(devlink, index); if (!port) return -ENODEV; } if (port) region = devlink_port_region_get_by_name(port, region_name); else region = devlink_region_get_by_name(devlink, region_name); if (!region) return -EINVAL; mutex_lock(®ion->snapshot_lock); snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); if (!snapshot) { mutex_unlock(®ion->snapshot_lock); return -EINVAL; } devlink_region_snapshot_del(region, snapshot); mutex_unlock(®ion->snapshot_lock); return 0; } int devlink_nl_region_new_doit(struct sk_buff *skb, struct genl_info *info) { struct devlink *devlink = info->user_ptr[0]; struct devlink_snapshot *snapshot; struct devlink_port *port = NULL; struct nlattr *snapshot_id_attr; struct devlink_region *region; const char *region_name; unsigned int index; u32 snapshot_id; u8 *data; int err; if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME)) { NL_SET_ERR_MSG(info->extack, "No region name provided"); return -EINVAL; } region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); port = devlink_port_get_by_index(devlink, index); if (!port) return -ENODEV; } if (port) region = devlink_port_region_get_by_name(port, region_name); else region = devlink_region_get_by_name(devlink, region_name); if (!region) { NL_SET_ERR_MSG(info->extack, "The requested region does not exist"); return -EINVAL; } if (!region->ops->snapshot) { NL_SET_ERR_MSG(info->extack, "The requested region does not support taking an immediate snapshot"); return -EOPNOTSUPP; } mutex_lock(®ion->snapshot_lock); if (region->cur_snapshots == region->max_snapshots) { NL_SET_ERR_MSG(info->extack, "The region has reached the maximum number of stored snapshots"); err = -ENOSPC; goto unlock; } snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]; if (snapshot_id_attr) { snapshot_id = nla_get_u32(snapshot_id_attr); if (devlink_region_snapshot_get_by_id(region, snapshot_id)) { NL_SET_ERR_MSG(info->extack, "The requested snapshot id is already in use"); err = -EEXIST; goto unlock; } err = __devlink_snapshot_id_insert(devlink, snapshot_id); if (err) goto unlock; } else { err = __devlink_region_snapshot_id_get(devlink, &snapshot_id); if (err) { NL_SET_ERR_MSG(info->extack, "Failed to allocate a new snapshot id"); goto unlock; } } if (port) err = region->port_ops->snapshot(port, region->port_ops, info->extack, &data); else err = region->ops->snapshot(devlink, region->ops, info->extack, &data); if (err) goto err_snapshot_capture; err = __devlink_region_snapshot_create(region, data, snapshot_id); if (err) goto err_snapshot_create; if (!snapshot_id_attr) { struct sk_buff *msg; snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); if (WARN_ON(!snapshot)) { err = -EINVAL; goto unlock; } msg = devlink_nl_region_notify_build(region, snapshot, DEVLINK_CMD_REGION_NEW, info->snd_portid, info->snd_seq); err = PTR_ERR_OR_ZERO(msg); if (err) goto err_notify; err = genlmsg_reply(msg, info); if (err) goto err_notify; } mutex_unlock(®ion->snapshot_lock); return 0; err_snapshot_create: region->ops->destructor(data); err_snapshot_capture: __devlink_snapshot_id_decrement(devlink, snapshot_id); mutex_unlock(®ion->snapshot_lock); return err; err_notify: devlink_region_snapshot_del(region, snapshot); unlock: mutex_unlock(®ion->snapshot_lock); return err; } static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg, u8 *chunk, u32 chunk_size, u64 addr) { struct nlattr *chunk_attr; int err; chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK); if (!chunk_attr) return -EINVAL; err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk); if (err) goto nla_put_failure; err = devlink_nl_put_u64(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr); if (err) goto nla_put_failure; nla_nest_end(msg, chunk_attr); return 0; nla_put_failure: nla_nest_cancel(msg, chunk_attr); return err; } #define DEVLINK_REGION_READ_CHUNK_SIZE 256 typedef int devlink_chunk_fill_t(void *cb_priv, u8 *chunk, u32 chunk_size, u64 curr_offset, struct netlink_ext_ack *extack); static int devlink_nl_region_read_fill(struct sk_buff *skb, devlink_chunk_fill_t *cb, void *cb_priv, u64 start_offset, u64 end_offset, u64 *new_offset, struct netlink_ext_ack *extack) { u64 curr_offset = start_offset; int err = 0; u8 *data; /* Allocate and re-use a single buffer */ data = kmalloc(DEVLINK_REGION_READ_CHUNK_SIZE, GFP_KERNEL); if (!data) return -ENOMEM; *new_offset = start_offset; while (curr_offset < end_offset) { u32 data_size; data_size = min_t(u32, end_offset - curr_offset, DEVLINK_REGION_READ_CHUNK_SIZE); err = cb(cb_priv, data, data_size, curr_offset, extack); if (err) break; err = devlink_nl_cmd_region_read_chunk_fill(skb, data, data_size, curr_offset); if (err) break; curr_offset += data_size; } *new_offset = curr_offset; kfree(data); return err; } static int devlink_region_snapshot_fill(void *cb_priv, u8 *chunk, u32 chunk_size, u64 curr_offset, struct netlink_ext_ack __always_unused *extack) { struct devlink_snapshot *snapshot = cb_priv; memcpy(chunk, &snapshot->data[curr_offset], chunk_size); return 0; } static int devlink_region_port_direct_fill(void *cb_priv, u8 *chunk, u32 chunk_size, u64 curr_offset, struct netlink_ext_ack *extack) { struct devlink_region *region = cb_priv; return region->port_ops->read(region->port, region->port_ops, extack, curr_offset, chunk_size, chunk); } static int devlink_region_direct_fill(void *cb_priv, u8 *chunk, u32 chunk_size, u64 curr_offset, struct netlink_ext_ack *extack) { struct devlink_region *region = cb_priv; return region->ops->read(region->devlink, region->ops, extack, curr_offset, chunk_size, chunk); } int devlink_nl_region_read_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct nlattr *chunks_attr, *region_attr, *snapshot_attr; u64 ret_offset, start_offset, end_offset = U64_MAX; struct nlattr **attrs = info->info.attrs; struct devlink_port *port = NULL; devlink_chunk_fill_t *region_cb; struct devlink_region *region; const char *region_name; struct devlink *devlink; unsigned int index; void *region_cb_priv; void *hdr; int err; start_offset = state->start_offset; devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs, false); if (IS_ERR(devlink)) return PTR_ERR(devlink); if (!attrs[DEVLINK_ATTR_REGION_NAME]) { NL_SET_ERR_MSG(cb->extack, "No region name provided"); err = -EINVAL; goto out_unlock; } if (attrs[DEVLINK_ATTR_PORT_INDEX]) { index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]); port = devlink_port_get_by_index(devlink, index); if (!port) { err = -ENODEV; goto out_unlock; } } region_attr = attrs[DEVLINK_ATTR_REGION_NAME]; region_name = nla_data(region_attr); if (port) region = devlink_port_region_get_by_name(port, region_name); else region = devlink_region_get_by_name(devlink, region_name); if (!region) { NL_SET_ERR_MSG_ATTR(cb->extack, region_attr, "Requested region does not exist"); err = -EINVAL; goto out_unlock; } snapshot_attr = attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]; if (!snapshot_attr) { if (!nla_get_flag(attrs[DEVLINK_ATTR_REGION_DIRECT])) { NL_SET_ERR_MSG(cb->extack, "No snapshot id provided"); err = -EINVAL; goto out_unlock; } if (!region->ops->read) { NL_SET_ERR_MSG(cb->extack, "Requested region does not support direct read"); err = -EOPNOTSUPP; goto out_unlock; } if (port) region_cb = &devlink_region_port_direct_fill; else region_cb = &devlink_region_direct_fill; region_cb_priv = region; } else { struct devlink_snapshot *snapshot; u32 snapshot_id; if (nla_get_flag(attrs[DEVLINK_ATTR_REGION_DIRECT])) { NL_SET_ERR_MSG_ATTR(cb->extack, snapshot_attr, "Direct region read does not use snapshot"); err = -EINVAL; goto out_unlock; } snapshot_id = nla_get_u32(snapshot_attr); snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); if (!snapshot) { NL_SET_ERR_MSG_ATTR(cb->extack, snapshot_attr, "Requested snapshot does not exist"); err = -EINVAL; goto out_unlock; } region_cb = &devlink_region_snapshot_fill; region_cb_priv = snapshot; } if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] && attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) { if (!start_offset) start_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]); } if (end_offset > region->size) end_offset = region->size; /* return 0 if there is no further data to read */ if (start_offset == end_offset) { err = 0; goto out_unlock; } hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, DEVLINK_CMD_REGION_READ); if (!hdr) { err = -EMSGSIZE; goto out_unlock; } err = devlink_nl_put_handle(skb, devlink); if (err) goto nla_put_failure; if (region->port) { err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX, region->port->index); if (err) goto nla_put_failure; } err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name); if (err) goto nla_put_failure; chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS); if (!chunks_attr) { err = -EMSGSIZE; goto nla_put_failure; } err = devlink_nl_region_read_fill(skb, region_cb, region_cb_priv, start_offset, end_offset, &ret_offset, cb->extack); if (err && err != -EMSGSIZE) goto nla_put_failure; /* Check if there was any progress done to prevent infinite loop */ if (ret_offset == start_offset) { err = -EINVAL; goto nla_put_failure; } state->start_offset = ret_offset; nla_nest_end(skb, chunks_attr); genlmsg_end(skb, hdr); devl_unlock(devlink); devlink_put(devlink); return skb->len; nla_put_failure: genlmsg_cancel(skb, hdr); out_unlock: devl_unlock(devlink); devlink_put(devlink); return err; } /** * devl_region_create - create a new address region * * @devlink: devlink * @ops: region operations and name * @region_max_snapshots: Maximum supported number of snapshots for region * @region_size: size of region */ struct devlink_region *devl_region_create(struct devlink *devlink, const struct devlink_region_ops *ops, u32 region_max_snapshots, u64 region_size) { struct devlink_region *region; devl_assert_locked(devlink); if (WARN_ON(!ops) || WARN_ON(!ops->destructor)) return ERR_PTR(-EINVAL); if (devlink_region_get_by_name(devlink, ops->name)) return ERR_PTR(-EEXIST); region = kzalloc(sizeof(*region), GFP_KERNEL); if (!region) return ERR_PTR(-ENOMEM); region->devlink = devlink; region->max_snapshots = region_max_snapshots; region->ops = ops; region->size = region_size; INIT_LIST_HEAD(®ion->snapshot_list); mutex_init(®ion->snapshot_lock); list_add_tail(®ion->list, &devlink->region_list); devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); return region; } EXPORT_SYMBOL_GPL(devl_region_create); /** * devlink_region_create - create a new address region * * @devlink: devlink * @ops: region operations and name * @region_max_snapshots: Maximum supported number of snapshots for region * @region_size: size of region * * Context: Takes and release devlink->lock <mutex>. */ struct devlink_region * devlink_region_create(struct devlink *devlink, const struct devlink_region_ops *ops, u32 region_max_snapshots, u64 region_size) { struct devlink_region *region; devl_lock(devlink); region = devl_region_create(devlink, ops, region_max_snapshots, region_size); devl_unlock(devlink); return region; } EXPORT_SYMBOL_GPL(devlink_region_create); /** * devlink_port_region_create - create a new address region for a port * * @port: devlink port * @ops: region operations and name * @region_max_snapshots: Maximum supported number of snapshots for region * @region_size: size of region * * Context: Takes and release devlink->lock <mutex>. */ struct devlink_region * devlink_port_region_create(struct devlink_port *port, const struct devlink_port_region_ops *ops, u32 region_max_snapshots, u64 region_size) { struct devlink *devlink = port->devlink; struct devlink_region *region; int err = 0; ASSERT_DEVLINK_PORT_INITIALIZED(port); if (WARN_ON(!ops) || WARN_ON(!ops->destructor)) return ERR_PTR(-EINVAL); devl_lock(devlink); if (devlink_port_region_get_by_name(port, ops->name)) { err = -EEXIST; goto unlock; } region = kzalloc(sizeof(*region), GFP_KERNEL); if (!region) { err = -ENOMEM; goto unlock; } region->devlink = devlink; region->port = port; region->max_snapshots = region_max_snapshots; region->port_ops = ops; region->size = region_size; INIT_LIST_HEAD(®ion->snapshot_list); mutex_init(®ion->snapshot_lock); list_add_tail(®ion->list, &port->region_list); devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); devl_unlock(devlink); return region; unlock: devl_unlock(devlink); return ERR_PTR(err); } EXPORT_SYMBOL_GPL(devlink_port_region_create); /** * devl_region_destroy - destroy address region * * @region: devlink region to destroy */ void devl_region_destroy(struct devlink_region *region) { struct devlink *devlink = region->devlink; struct devlink_snapshot *snapshot, *ts; devl_assert_locked(devlink); /* Free all snapshots of region */ mutex_lock(®ion->snapshot_lock); list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list) devlink_region_snapshot_del(region, snapshot); mutex_unlock(®ion->snapshot_lock); list_del(®ion->list); mutex_destroy(®ion->snapshot_lock); devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL); kfree(region); } EXPORT_SYMBOL_GPL(devl_region_destroy); /** * devlink_region_destroy - destroy address region * * @region: devlink region to destroy * * Context: Takes and release devlink->lock <mutex>. */ void devlink_region_destroy(struct devlink_region *region) { struct devlink *devlink = region->devlink; devl_lock(devlink); devl_region_destroy(region); devl_unlock(devlink); } EXPORT_SYMBOL_GPL(devlink_region_destroy); /** * devlink_region_snapshot_id_get - get snapshot ID * * This callback should be called when adding a new snapshot, * Driver should use the same id for multiple snapshots taken * on multiple regions at the same time/by the same trigger. * * The caller of this function must use devlink_region_snapshot_id_put * when finished creating regions using this id. * * Returns zero on success, or a negative error code on failure. * * @devlink: devlink * @id: storage to return id */ int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) { return __devlink_region_snapshot_id_get(devlink, id); } EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get); /** * devlink_region_snapshot_id_put - put snapshot ID reference * * This should be called by a driver after finishing creating snapshots * with an id. Doing so ensures that the ID can later be released in the * event that all snapshots using it have been destroyed. * * @devlink: devlink * @id: id to release reference on */ void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id) { __devlink_snapshot_id_decrement(devlink, id); } EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put); /** * devlink_region_snapshot_create - create a new snapshot * This will add a new snapshot of a region. The snapshot * will be stored on the region struct and can be accessed * from devlink. This is useful for future analyses of snapshots. * Multiple snapshots can be created on a region. * The @snapshot_id should be obtained using the getter function. * * @region: devlink region of the snapshot * @data: snapshot data * @snapshot_id: snapshot id to be created */ int devlink_region_snapshot_create(struct devlink_region *region, u8 *data, u32 snapshot_id) { int err; mutex_lock(®ion->snapshot_lock); err = __devlink_region_snapshot_create(region, data, snapshot_id); mutex_unlock(®ion->snapshot_lock); return err; } EXPORT_SYMBOL_GPL(devlink_region_snapshot_create); |
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1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 | /* * Copyright (C) 1991, 1992 Linus Torvalds * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs * * Pentium III FXSR, SSE support * Gareth Hughes <gareth@valinux.com>, May 2000 */ /* * Handle hardware traps and faults. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/context_tracking.h> #include <linux/interrupt.h> #include <linux/kallsyms.h> #include <linux/kmsan.h> #include <linux/spinlock.h> #include <linux/kprobes.h> #include <linux/uaccess.h> #include <linux/kdebug.h> #include <linux/kgdb.h> #include <linux/kernel.h> #include <linux/export.h> #include <linux/ptrace.h> #include <linux/uprobes.h> #include <linux/string.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/kexec.h> #include <linux/sched.h> #include <linux/sched/task_stack.h> #include <linux/timer.h> #include <linux/init.h> #include <linux/bug.h> #include <linux/nmi.h> #include <linux/mm.h> #include <linux/smp.h> #include <linux/cpu.h> #include <linux/io.h> #include <linux/hardirq.h> #include <linux/atomic.h> #include <linux/iommu.h> #include <linux/ubsan.h> #include <asm/stacktrace.h> #include <asm/processor.h> #include <asm/debugreg.h> #include <asm/realmode.h> #include <asm/text-patching.h> #include <asm/ftrace.h> #include <asm/traps.h> #include <asm/desc.h> #include <asm/fred.h> #include <asm/fpu/api.h> #include <asm/cpu.h> #include <asm/cpu_entry_area.h> #include <asm/mce.h> #include <asm/fixmap.h> #include <asm/mach_traps.h> #include <asm/alternative.h> #include <asm/fpu/xstate.h> #include <asm/vm86.h> #include <asm/umip.h> #include <asm/insn.h> #include <asm/insn-eval.h> #include <asm/vdso.h> #include <asm/tdx.h> #include <asm/cfi.h> #include <asm/msr.h> #ifdef CONFIG_X86_64 #include <asm/x86_init.h> #else #include <asm/processor-flags.h> #include <asm/setup.h> #endif #include <asm/proto.h> DECLARE_BITMAP(system_vectors, NR_VECTORS); __always_inline int is_valid_bugaddr(unsigned long addr) { if (addr < TASK_SIZE_MAX) return 0; /* * We got #UD, if the text isn't readable we'd have gotten * a different exception. */ return *(unsigned short *)addr == INSN_UD2; } /* * Check for UD1 or UD2, accounting for Address Size Override Prefixes. * If it's a UD1, further decode to determine its use: * * FineIBT: d6 udb * FineIBT: f0 75 f9 lock jne . - 6 * UBSan{0}: 67 0f b9 00 ud1 (%eax),%eax * UBSan{10}: 67 0f b9 40 10 ud1 0x10(%eax),%eax * static_call: 0f b9 cc ud1 %esp,%ecx * * Notably UBSAN uses EAX, static_call uses ECX. */ __always_inline int decode_bug(unsigned long addr, s32 *imm, int *len) { unsigned long start = addr; bool lock = false; u8 v; if (addr < TASK_SIZE_MAX) return BUG_NONE; v = *(u8 *)(addr++); if (v == INSN_ASOP) v = *(u8 *)(addr++); if (v == INSN_LOCK) { lock = true; v = *(u8 *)(addr++); } switch (v) { case 0x70 ... 0x7f: /* Jcc.d8 */ addr += 1; /* d8 */ *len = addr - start; WARN_ON_ONCE(!lock); return BUG_LOCK; case 0xd6: *len = addr - start; return BUG_UDB; case OPCODE_ESCAPE: break; default: return BUG_NONE; } v = *(u8 *)(addr++); if (v == SECOND_BYTE_OPCODE_UD2) { *len = addr - start; return BUG_UD2; } if (v != SECOND_BYTE_OPCODE_UD1) return BUG_NONE; *imm = 0; v = *(u8 *)(addr++); /* ModRM */ if (X86_MODRM_MOD(v) != 3 && X86_MODRM_RM(v) == 4) addr++; /* SIB */ /* Decode immediate, if present */ switch (X86_MODRM_MOD(v)) { case 0: if (X86_MODRM_RM(v) == 5) addr += 4; /* RIP + disp32 */ break; case 1: *imm = *(s8 *)addr; addr += 1; break; case 2: *imm = *(s32 *)addr; addr += 4; break; case 3: break; } /* record instruction length */ *len = addr - start; if (X86_MODRM_REG(v) == 0) /* EAX */ return BUG_UD1_UBSAN; return BUG_UD1; } static nokprobe_inline int do_trap_no_signal(struct task_struct *tsk, int trapnr, const char *str, struct pt_regs *regs, long error_code) { if (v8086_mode(regs)) { /* * Traps 0, 1, 3, 4, and 5 should be forwarded to vm86. * On nmi (interrupt 2), do_trap should not be called. */ if (trapnr < X86_TRAP_UD) { if (!handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, trapnr)) return 0; } } else if (!user_mode(regs)) { if (fixup_exception(regs, trapnr, error_code, 0)) return 0; tsk->thread.error_code = error_code; tsk->thread.trap_nr = trapnr; die(str, regs, error_code); } else { if (fixup_vdso_exception(regs, trapnr, error_code, 0)) return 0; } /* * We want error_code and trap_nr set for userspace faults and * kernelspace faults which result in die(), but not * kernelspace faults which are fixed up. die() gives the * process no chance to handle the signal and notice the * kernel fault information, so that won't result in polluting * the information about previously queued, but not yet * delivered, faults. See also exc_general_protection below. */ tsk->thread.error_code = error_code; tsk->thread.trap_nr = trapnr; return -1; } static void show_signal(struct task_struct *tsk, int signr, const char *type, const char *desc, struct pt_regs *regs, long error_code) { if (show_unhandled_signals && unhandled_signal(tsk, signr) && printk_ratelimit()) { pr_info("%s[%d] %s%s ip:%lx sp:%lx error:%lx", tsk->comm, task_pid_nr(tsk), type, desc, regs->ip, regs->sp, error_code); print_vma_addr(KERN_CONT " in ", regs->ip); pr_cont("\n"); } } static void do_trap(int trapnr, int signr, char *str, struct pt_regs *regs, long error_code, int sicode, void __user *addr) { struct task_struct *tsk = current; if (!do_trap_no_signal(tsk, trapnr, str, regs, error_code)) return; show_signal(tsk, signr, "trap ", str, regs, error_code); if (!sicode) force_sig(signr); else force_sig_fault(signr, sicode, addr); } NOKPROBE_SYMBOL(do_trap); static void do_error_trap(struct pt_regs *regs, long error_code, char *str, unsigned long trapnr, int signr, int sicode, void __user *addr) { RCU_LOCKDEP_WARN(!rcu_is_watching(), "entry code didn't wake RCU"); if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) != NOTIFY_STOP) { cond_local_irq_enable(regs); do_trap(trapnr, signr, str, regs, error_code, sicode, addr); cond_local_irq_disable(regs); } } /* * Posix requires to provide the address of the faulting instruction for * SIGILL (#UD) and SIGFPE (#DE) in the si_addr member of siginfo_t. * * This address is usually regs->ip, but when an uprobe moved the code out * of line then regs->ip points to the XOL code which would confuse * anything which analyzes the fault address vs. the unmodified binary. If * a trap happened in XOL code then uprobe maps regs->ip back to the * original instruction address. */ static __always_inline void __user *error_get_trap_addr(struct pt_regs *regs) { return (void __user *)uprobe_get_trap_addr(regs); } DEFINE_IDTENTRY(exc_divide_error) { do_error_trap(regs, 0, "divide error", X86_TRAP_DE, SIGFPE, FPE_INTDIV, error_get_trap_addr(regs)); } DEFINE_IDTENTRY(exc_overflow) { do_error_trap(regs, 0, "overflow", X86_TRAP_OF, SIGSEGV, 0, NULL); } #ifdef CONFIG_X86_F00F_BUG void handle_invalid_op(struct pt_regs *regs) #else static inline void handle_invalid_op(struct pt_regs *regs) #endif { do_error_trap(regs, 0, "invalid opcode", X86_TRAP_UD, SIGILL, ILL_ILLOPN, error_get_trap_addr(regs)); } static noinstr bool handle_bug(struct pt_regs *regs) { unsigned long addr = regs->ip; bool handled = false; int ud_type, ud_len; s32 ud_imm; ud_type = decode_bug(addr, &ud_imm, &ud_len); if (ud_type == BUG_NONE) return handled; /* * All lies, just get the WARN/BUG out. */ instrumentation_begin(); /* * Normally @regs are unpoisoned by irqentry_enter(), but handle_bug() * is a rare case that uses @regs without passing them to * irqentry_enter(). */ kmsan_unpoison_entry_regs(regs); /* * Since we're emulating a CALL with exceptions, restore the interrupt * state to what it was at the exception site. */ if (regs->flags & X86_EFLAGS_IF) raw_local_irq_enable(); switch (ud_type) { case BUG_UD2: if (report_bug(regs->ip, regs) == BUG_TRAP_TYPE_WARN) { handled = true; break; } fallthrough; case BUG_UDB: case BUG_LOCK: if (handle_cfi_failure(regs) == BUG_TRAP_TYPE_WARN) { handled = true; break; } break; case BUG_UD1_UBSAN: if (IS_ENABLED(CONFIG_UBSAN_TRAP)) { pr_crit("%s at %pS\n", report_ubsan_failure(ud_imm), (void *)regs->ip); } break; default: break; } /* * When continuing, and regs->ip hasn't changed, move it to the next * instruction. When not continuing execution, restore the instruction * pointer. */ if (handled) { if (regs->ip == addr) regs->ip += ud_len; } else { regs->ip = addr; } if (regs->flags & X86_EFLAGS_IF) raw_local_irq_disable(); instrumentation_end(); return handled; } DEFINE_IDTENTRY_RAW(exc_invalid_op) { irqentry_state_t state; /* * We use UD2 as a short encoding for 'CALL __WARN', as such * handle it before exception entry to avoid recursive WARN * in case exception entry is the one triggering WARNs. */ if (!user_mode(regs) && handle_bug(regs)) return; state = irqentry_enter(regs); instrumentation_begin(); handle_invalid_op(regs); instrumentation_end(); irqentry_exit(regs, state); } DEFINE_IDTENTRY(exc_coproc_segment_overrun) { do_error_trap(regs, 0, "coprocessor segment overrun", X86_TRAP_OLD_MF, SIGFPE, 0, NULL); } DEFINE_IDTENTRY_ERRORCODE(exc_invalid_tss) { do_error_trap(regs, error_code, "invalid TSS", X86_TRAP_TS, SIGSEGV, 0, NULL); } DEFINE_IDTENTRY_ERRORCODE(exc_segment_not_present) { do_error_trap(regs, error_code, "segment not present", X86_TRAP_NP, SIGBUS, 0, NULL); } DEFINE_IDTENTRY_ERRORCODE(exc_stack_segment) { do_error_trap(regs, error_code, "stack segment", X86_TRAP_SS, SIGBUS, 0, NULL); } DEFINE_IDTENTRY_ERRORCODE(exc_alignment_check) { char *str = "alignment check"; if (notify_die(DIE_TRAP, str, regs, error_code, X86_TRAP_AC, SIGBUS) == NOTIFY_STOP) return; if (!user_mode(regs)) die("Split lock detected\n", regs, error_code); local_irq_enable(); if (handle_user_split_lock(regs, error_code)) goto out; do_trap(X86_TRAP_AC, SIGBUS, "alignment check", regs, error_code, BUS_ADRALN, NULL); out: local_irq_disable(); } #ifdef CONFIG_VMAP_STACK __visible void __noreturn handle_stack_overflow(struct pt_regs *regs, unsigned long fault_address, struct stack_info *info) { const char *name = stack_type_name(info->type); printk(KERN_EMERG "BUG: %s stack guard page was hit at %p (stack is %p..%p)\n", name, (void *)fault_address, info->begin, info->end); die("stack guard page", regs, 0); /* Be absolutely certain we don't return. */ panic("%s stack guard hit", name); } #endif /* * Prevent the compiler and/or objtool from marking the !CONFIG_X86_ESPFIX64 * version of exc_double_fault() as noreturn. Otherwise the noreturn mismatch * between configs triggers objtool warnings. * * This is a temporary hack until we have compiler or plugin support for * annotating noreturns. */ #ifdef CONFIG_X86_ESPFIX64 #define always_true() true #else bool always_true(void); bool __weak always_true(void) { return true; } #endif /* * Runs on an IST stack for x86_64 and on a special task stack for x86_32. * * On x86_64, this is more or less a normal kernel entry. Notwithstanding the * SDM's warnings about double faults being unrecoverable, returning works as * expected. Presumably what the SDM actually means is that the CPU may get * the register state wrong on entry, so returning could be a bad idea. * * Various CPU engineers have promised that double faults due to an IRET fault * while the stack is read-only are, in fact, recoverable. * * On x86_32, this is entered through a task gate, and regs are synthesized * from the TSS. Returning is, in principle, okay, but changes to regs will * be lost. If, for some reason, we need to return to a context with modified * regs, the shim code could be adjusted to synchronize the registers. * * The 32bit #DF shim provides CR2 already as an argument. On 64bit it needs * to be read before doing anything else. */ DEFINE_IDTENTRY_DF(exc_double_fault) { static const char str[] = "double fault"; struct task_struct *tsk = current; #ifdef CONFIG_VMAP_STACK unsigned long address = read_cr2(); struct stack_info info; #endif #ifdef CONFIG_X86_ESPFIX64 extern unsigned char native_irq_return_iret[]; /* * If IRET takes a non-IST fault on the espfix64 stack, then we * end up promoting it to a doublefault. In that case, take * advantage of the fact that we're not using the normal (TSS.sp0) * stack right now. We can write a fake #GP(0) frame at TSS.sp0 * and then modify our own IRET frame so that, when we return, * we land directly at the #GP(0) vector with the stack already * set up according to its expectations. * * The net result is that our #GP handler will think that we * entered from usermode with the bad user context. * * No need for nmi_enter() here because we don't use RCU. */ if (((long)regs->sp >> P4D_SHIFT) == ESPFIX_PGD_ENTRY && regs->cs == __KERNEL_CS && regs->ip == (unsigned long)native_irq_return_iret) { struct pt_regs *gpregs = (struct pt_regs *)this_cpu_read(cpu_tss_rw.x86_tss.sp0) - 1; unsigned long *p = (unsigned long *)regs->sp; /* * regs->sp points to the failing IRET frame on the * ESPFIX64 stack. Copy it to the entry stack. This fills * in gpregs->ss through gpregs->ip. * */ gpregs->ip = p[0]; gpregs->cs = p[1]; gpregs->flags = p[2]; gpregs->sp = p[3]; gpregs->ss = p[4]; gpregs->orig_ax = 0; /* Missing (lost) #GP error code */ /* * Adjust our frame so that we return straight to the #GP * vector with the expected RSP value. This is safe because * we won't enable interrupts or schedule before we invoke * general_protection, so nothing will clobber the stack * frame we just set up. * * We will enter general_protection with kernel GSBASE, * which is what the stub expects, given that the faulting * RIP will be the IRET instruction. */ regs->ip = (unsigned long)asm_exc_general_protection; regs->sp = (unsigned long)&gpregs->orig_ax; return; } #endif irqentry_nmi_enter(regs); instrumentation_begin(); notify_die(DIE_TRAP, str, regs, error_code, X86_TRAP_DF, SIGSEGV); tsk->thread.error_code = error_code; tsk->thread.trap_nr = X86_TRAP_DF; #ifdef CONFIG_VMAP_STACK /* * If we overflow the stack into a guard page, the CPU will fail * to deliver #PF and will send #DF instead. Similarly, if we * take any non-IST exception while too close to the bottom of * the stack, the processor will get a page fault while * delivering the exception and will generate a double fault. * * According to the SDM (footnote in 6.15 under "Interrupt 14 - * Page-Fault Exception (#PF): * * Processors update CR2 whenever a page fault is detected. If a * second page fault occurs while an earlier page fault is being * delivered, the faulting linear address of the second fault will * overwrite the contents of CR2 (replacing the previous * address). These updates to CR2 occur even if the page fault * results in a double fault or occurs during the delivery of a * double fault. * * The logic below has a small possibility of incorrectly diagnosing * some errors as stack overflows. For example, if the IDT or GDT * gets corrupted such that #GP delivery fails due to a bad descriptor * causing #GP and we hit this condition while CR2 coincidentally * points to the stack guard page, we'll think we overflowed the * stack. Given that we're going to panic one way or another * if this happens, this isn't necessarily worth fixing. * * If necessary, we could improve the test by only diagnosing * a stack overflow if the saved RSP points within 47 bytes of * the bottom of the stack: if RSP == tsk_stack + 48 and we * take an exception, the stack is already aligned and there * will be enough room SS, RSP, RFLAGS, CS, RIP, and a * possible error code, so a stack overflow would *not* double * fault. With any less space left, exception delivery could * fail, and, as a practical matter, we've overflowed the * stack even if the actual trigger for the double fault was * something else. */ if (get_stack_guard_info((void *)address, &info)) handle_stack_overflow(regs, address, &info); #endif pr_emerg("PANIC: double fault, error_code: 0x%lx\n", error_code); die("double fault", regs, error_code); if (always_true()) panic("Machine halted."); instrumentation_end(); } DEFINE_IDTENTRY(exc_bounds) { if (notify_die(DIE_TRAP, "bounds", regs, 0, X86_TRAP_BR, SIGSEGV) == NOTIFY_STOP) return; cond_local_irq_enable(regs); if (!user_mode(regs)) die("bounds", regs, 0); do_trap(X86_TRAP_BR, SIGSEGV, "bounds", regs, 0, 0, NULL); cond_local_irq_disable(regs); } enum kernel_gp_hint { GP_NO_HINT, GP_NON_CANONICAL, GP_CANONICAL }; /* * When an uncaught #GP occurs, try to determine the memory address accessed by * the instruction and return that address to the caller. Also, try to figure * out whether any part of the access to that address was non-canonical. */ static enum kernel_gp_hint get_kernel_gp_address(struct pt_regs *regs, unsigned long *addr) { u8 insn_buf[MAX_INSN_SIZE]; struct insn insn; int ret; if (copy_from_kernel_nofault(insn_buf, (void *)regs->ip, MAX_INSN_SIZE)) return GP_NO_HINT; ret = insn_decode_kernel(&insn, insn_buf); if (ret < 0) return GP_NO_HINT; *addr = (unsigned long)insn_get_addr_ref(&insn, regs); if (*addr == -1UL) return GP_NO_HINT; #ifdef CONFIG_X86_64 /* * Check that: * - the operand is not in the kernel half * - the last byte of the operand is not in the user canonical half */ if (*addr < ~__VIRTUAL_MASK && *addr + insn.opnd_bytes - 1 > __VIRTUAL_MASK) return GP_NON_CANONICAL; #endif return GP_CANONICAL; } #define GPFSTR "general protection fault" static bool fixup_iopl_exception(struct pt_regs *regs) { struct thread_struct *t = ¤t->thread; unsigned char byte; unsigned long ip; if (!IS_ENABLED(CONFIG_X86_IOPL_IOPERM) || t->iopl_emul != 3) return false; if (insn_get_effective_ip(regs, &ip)) return false; if (get_user(byte, (const char __user *)ip)) return false; if (byte != 0xfa && byte != 0xfb) return false; if (!t->iopl_warn && printk_ratelimit()) { pr_err("%s[%d] attempts to use CLI/STI, pretending it's a NOP, ip:%lx", current->comm, task_pid_nr(current), ip); print_vma_addr(KERN_CONT " in ", ip); pr_cont("\n"); t->iopl_warn = 1; } regs->ip += 1; return true; } /* * The unprivileged ENQCMD instruction generates #GPs if the * IA32_PASID MSR has not been populated. If possible, populate * the MSR from a PASID previously allocated to the mm. */ static bool try_fixup_enqcmd_gp(void) { #ifdef CONFIG_ARCH_HAS_CPU_PASID u32 pasid; /* * MSR_IA32_PASID is managed using XSAVE. Directly * writing to the MSR is only possible when fpregs * are valid and the fpstate is not. This is * guaranteed when handling a userspace exception * in *before* interrupts are re-enabled. */ lockdep_assert_irqs_disabled(); /* * Hardware without ENQCMD will not generate * #GPs that can be fixed up here. */ if (!cpu_feature_enabled(X86_FEATURE_ENQCMD)) return false; /* * If the mm has not been allocated a * PASID, the #GP can not be fixed up. */ if (!mm_valid_pasid(current->mm)) return false; pasid = mm_get_enqcmd_pasid(current->mm); /* * Did this thread already have its PASID activated? * If so, the #GP must be from something else. */ if (current->pasid_activated) return false; wrmsrq(MSR_IA32_PASID, pasid | MSR_IA32_PASID_VALID); current->pasid_activated = 1; return true; #else return false; #endif } static bool gp_try_fixup_and_notify(struct pt_regs *regs, int trapnr, unsigned long error_code, const char *str, unsigned long address) { if (fixup_exception(regs, trapnr, error_code, address)) return true; current->thread.error_code = error_code; current->thread.trap_nr = trapnr; /* * To be potentially processing a kprobe fault and to trust the result * from kprobe_running(), we have to be non-preemptible. */ if (!preemptible() && kprobe_running() && kprobe_fault_handler(regs, trapnr)) return true; return notify_die(DIE_GPF, str, regs, error_code, trapnr, SIGSEGV) == NOTIFY_STOP; } static void gp_user_force_sig_segv(struct pt_regs *regs, int trapnr, unsigned long error_code, const char *str) { current->thread.error_code = error_code; current->thread.trap_nr = trapnr; show_signal(current, SIGSEGV, "", str, regs, error_code); force_sig(SIGSEGV); } DEFINE_IDTENTRY_ERRORCODE(exc_general_protection) { char desc[sizeof(GPFSTR) + 50 + 2*sizeof(unsigned long) + 1] = GPFSTR; enum kernel_gp_hint hint = GP_NO_HINT; unsigned long gp_addr; if (user_mode(regs) && try_fixup_enqcmd_gp()) return; cond_local_irq_enable(regs); if (static_cpu_has(X86_FEATURE_UMIP)) { if (user_mode(regs) && fixup_umip_exception(regs)) goto exit; } if (v8086_mode(regs)) { local_irq_enable(); handle_vm86_fault((struct kernel_vm86_regs *) regs, error_code); local_irq_disable(); return; } if (user_mode(regs)) { if (fixup_iopl_exception(regs)) goto exit; if (fixup_vdso_exception(regs, X86_TRAP_GP, error_code, 0)) goto exit; gp_user_force_sig_segv(regs, X86_TRAP_GP, error_code, desc); goto exit; } if (gp_try_fixup_and_notify(regs, X86_TRAP_GP, error_code, desc, 0)) goto exit; if (error_code) snprintf(desc, sizeof(desc), "segment-related " GPFSTR); else hint = get_kernel_gp_address(regs, &gp_addr); if (hint != GP_NO_HINT) snprintf(desc, sizeof(desc), GPFSTR ", %s 0x%lx", (hint == GP_NON_CANONICAL) ? "probably for non-canonical address" : "maybe for address", gp_addr); /* * KASAN is interested only in the non-canonical case, clear it * otherwise. */ if (hint != GP_NON_CANONICAL) gp_addr = 0; die_addr(desc, regs, error_code, gp_addr); exit: cond_local_irq_disable(regs); } static bool do_int3(struct pt_regs *regs) { int res; #ifdef CONFIG_KGDB_LOW_LEVEL_TRAP if (kgdb_ll_trap(DIE_INT3, "int3", regs, 0, X86_TRAP_BP, SIGTRAP) == NOTIFY_STOP) return true; #endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */ #ifdef CONFIG_KPROBES if (kprobe_int3_handler(regs)) return true; #endif res = notify_die(DIE_INT3, "int3", regs, 0, X86_TRAP_BP, SIGTRAP); return res == NOTIFY_STOP; } NOKPROBE_SYMBOL(do_int3); static void do_int3_user(struct pt_regs *regs) { if (do_int3(regs)) return; cond_local_irq_enable(regs); do_trap(X86_TRAP_BP, SIGTRAP, "int3", regs, 0, 0, NULL); cond_local_irq_disable(regs); } DEFINE_IDTENTRY_RAW(exc_int3) { /* * smp_text_poke_int3_handler() is completely self contained code; it does (and * must) *NOT* call out to anything, lest it hits upon yet another * INT3. */ if (smp_text_poke_int3_handler(regs)) return; /* * irqentry_enter_from_user_mode() uses static_branch_{,un}likely() * and therefore can trigger INT3, hence smp_text_poke_int3_handler() must * be done before. If the entry came from kernel mode, then use * nmi_enter() because the INT3 could have been hit in any context * including NMI. */ if (user_mode(regs)) { irqentry_enter_from_user_mode(regs); instrumentation_begin(); do_int3_user(regs); instrumentation_end(); irqentry_exit_to_user_mode(regs); } else { irqentry_state_t irq_state = irqentry_nmi_enter(regs); instrumentation_begin(); if (!do_int3(regs)) die("int3", regs, 0); instrumentation_end(); irqentry_nmi_exit(regs, irq_state); } } #ifdef CONFIG_X86_64 /* * Help handler running on a per-cpu (IST or entry trampoline) stack * to switch to the normal thread stack if the interrupted code was in * user mode. The actual stack switch is done in entry_64.S */ asmlinkage __visible noinstr struct pt_regs *sync_regs(struct pt_regs *eregs) { struct pt_regs *regs = (struct pt_regs *)current_top_of_stack() - 1; if (regs != eregs) *regs = *eregs; return regs; } #ifdef CONFIG_AMD_MEM_ENCRYPT asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *regs) { unsigned long sp, *stack; struct stack_info info; struct pt_regs *regs_ret; /* * In the SYSCALL entry path the RSP value comes from user-space - don't * trust it and switch to the current kernel stack */ if (ip_within_syscall_gap(regs)) { sp = current_top_of_stack(); goto sync; } /* * From here on the RSP value is trusted. Now check whether entry * happened from a safe stack. Not safe are the entry or unknown stacks, * use the fall-back stack instead in this case. */ sp = regs->sp; stack = (unsigned long *)sp; if (!get_stack_info_noinstr(stack, current, &info) || info.type == STACK_TYPE_ENTRY || info.type > STACK_TYPE_EXCEPTION_LAST) sp = __this_cpu_ist_top_va(VC2); sync: /* * Found a safe stack - switch to it as if the entry didn't happen via * IST stack. The code below only copies pt_regs, the real switch happens * in assembly code. */ sp = ALIGN_DOWN(sp, 8) - sizeof(*regs_ret); regs_ret = (struct pt_regs *)sp; *regs_ret = *regs; return regs_ret; } #endif asmlinkage __visible noinstr struct pt_regs *fixup_bad_iret(struct pt_regs *bad_regs) { struct pt_regs tmp, *new_stack; /* * This is called from entry_64.S early in handling a fault * caused by a bad iret to user mode. To handle the fault * correctly, we want to move our stack frame to where it would * be had we entered directly on the entry stack (rather than * just below the IRET frame) and we want to pretend that the * exception came from the IRET target. */ new_stack = (struct pt_regs *)__this_cpu_read(cpu_tss_rw.x86_tss.sp0) - 1; /* Copy the IRET target to the temporary storage. */ __memcpy(&tmp.ip, (void *)bad_regs->sp, 5*8); /* Copy the remainder of the stack from the current stack. */ __memcpy(&tmp, bad_regs, offsetof(struct pt_regs, ip)); /* Update the entry stack */ __memcpy(new_stack, &tmp, sizeof(tmp)); BUG_ON(!user_mode(new_stack)); return new_stack; } #endif static bool is_sysenter_singlestep(struct pt_regs *regs) { /* * We don't try for precision here. If we're anywhere in the region of * code that can be single-stepped in the SYSENTER entry path, then * assume that this is a useless single-step trap due to SYSENTER * being invoked with TF set. (We don't know in advance exactly * which instructions will be hit because BTF could plausibly * be set.) */ #ifdef CONFIG_X86_32 return (regs->ip - (unsigned long)__begin_SYSENTER_singlestep_region) < (unsigned long)__end_SYSENTER_singlestep_region - (unsigned long)__begin_SYSENTER_singlestep_region; #elif defined(CONFIG_IA32_EMULATION) return (regs->ip - (unsigned long)entry_SYSENTER_compat) < (unsigned long)__end_entry_SYSENTER_compat - (unsigned long)entry_SYSENTER_compat; #else return false; #endif } static __always_inline unsigned long debug_read_reset_dr6(void) { unsigned long dr6; get_debugreg(dr6, 6); dr6 ^= DR6_RESERVED; /* Flip to positive polarity */ /* * The Intel SDM says: * * Certain debug exceptions may clear bits 0-3 of DR6. * * BLD induced #DB clears DR6.BLD and any other debug * exception doesn't modify DR6.BLD. * * RTM induced #DB clears DR6.RTM and any other debug * exception sets DR6.RTM. * * To avoid confusion in identifying debug exceptions, * debug handlers should set DR6.BLD and DR6.RTM, and * clear other DR6 bits before returning. * * Keep it simple: write DR6 with its architectural reset * value 0xFFFF0FF0, defined as DR6_RESERVED, immediately. */ set_debugreg(DR6_RESERVED, 6); return dr6; } /* * Our handling of the processor debug registers is non-trivial. * We do not clear them on entry and exit from the kernel. Therefore * it is possible to get a watchpoint trap here from inside the kernel. * However, the code in ./ptrace.c has ensured that the user can * only set watchpoints on userspace addresses. Therefore the in-kernel * watchpoint trap can only occur in code which is reading/writing * from user space. Such code must not hold kernel locks (since it * can equally take a page fault), therefore it is safe to call * force_sig_info even though that claims and releases locks. * * Code in ./signal.c ensures that the debug control register * is restored before we deliver any signal, and therefore that * user code runs with the correct debug control register even though * we clear it here. * * Being careful here means that we don't have to be as careful in a * lot of more complicated places (task switching can be a bit lazy * about restoring all the debug state, and ptrace doesn't have to * find every occurrence of the TF bit that could be saved away even * by user code) * * May run on IST stack. */ static bool notify_debug(struct pt_regs *regs, unsigned long *dr6) { /* * Notifiers will clear bits in @dr6 to indicate the event has been * consumed - hw_breakpoint_handler(), single_stop_cont(). * * Notifiers will set bits in @virtual_dr6 to indicate the desire * for signals - ptrace_triggered(), kgdb_hw_overflow_handler(). */ if (notify_die(DIE_DEBUG, "debug", regs, (long)dr6, 0, SIGTRAP) == NOTIFY_STOP) return true; return false; } static noinstr void exc_debug_kernel(struct pt_regs *regs, unsigned long dr6) { /* * Disable breakpoints during exception handling; recursive exceptions * are exceedingly 'fun'. * * Since this function is NOKPROBE, and that also applies to * HW_BREAKPOINT_X, we can't hit a breakpoint before this (XXX except a * HW_BREAKPOINT_W on our stack) * * Entry text is excluded for HW_BP_X and cpu_entry_area, which * includes the entry stack is excluded for everything. * * For FRED, nested #DB should just work fine. But when a watchpoint or * breakpoint is set in the code path which is executed by #DB handler, * it results in an endless recursion and stack overflow. Thus we stay * with the IDT approach, i.e., save DR7 and disable #DB. */ unsigned long dr7 = local_db_save(); irqentry_state_t irq_state = irqentry_nmi_enter(regs); instrumentation_begin(); /* * If something gets miswired and we end up here for a user mode * #DB, we will malfunction. */ WARN_ON_ONCE(user_mode(regs)); if (test_thread_flag(TIF_BLOCKSTEP)) { /* * The SDM says "The processor clears the BTF flag when it * generates a debug exception." but PTRACE_BLOCKSTEP requested * it for userspace, but we just took a kernel #DB, so re-set * BTF. */ unsigned long debugctl; rdmsrq(MSR_IA32_DEBUGCTLMSR, debugctl); debugctl |= DEBUGCTLMSR_BTF; wrmsrq(MSR_IA32_DEBUGCTLMSR, debugctl); } /* * Catch SYSENTER with TF set and clear DR_STEP. If this hit a * watchpoint at the same time then that will still be handled. */ if (!cpu_feature_enabled(X86_FEATURE_FRED) && (dr6 & DR_STEP) && is_sysenter_singlestep(regs)) dr6 &= ~DR_STEP; /* * The kernel doesn't use INT1 */ if (!dr6) goto out; if (notify_debug(regs, &dr6)) goto out; /* * The kernel doesn't use TF single-step outside of: * * - Kprobes, consumed through kprobe_debug_handler() * - KGDB, consumed through notify_debug() * * So if we get here with DR_STEP set, something is wonky. * * A known way to trigger this is through QEMU's GDB stub, * which leaks #DB into the guest and causes IST recursion. */ if (WARN_ON_ONCE(dr6 & DR_STEP)) regs->flags &= ~X86_EFLAGS_TF; out: instrumentation_end(); irqentry_nmi_exit(regs, irq_state); local_db_restore(dr7); } static noinstr void exc_debug_user(struct pt_regs *regs, unsigned long dr6) { bool icebp; /* * If something gets miswired and we end up here for a kernel mode * #DB, we will malfunction. */ WARN_ON_ONCE(!user_mode(regs)); /* * NB: We can't easily clear DR7 here because * irqentry_exit_to_usermode() can invoke ptrace, schedule, access * user memory, etc. This means that a recursive #DB is possible. If * this happens, that #DB will hit exc_debug_kernel() and clear DR7. * Since we're not on the IST stack right now, everything will be * fine. */ irqentry_enter_from_user_mode(regs); instrumentation_begin(); /* * Start the virtual/ptrace DR6 value with just the DR_STEP mask * of the real DR6. ptrace_triggered() will set the DR_TRAPn bits. * * Userspace expects DR_STEP to be visible in ptrace_get_debugreg(6) * even if it is not the result of PTRACE_SINGLESTEP. */ current->thread.virtual_dr6 = (dr6 & DR_STEP); /* * The SDM says "The processor clears the BTF flag when it * generates a debug exception." Clear TIF_BLOCKSTEP to keep * TIF_BLOCKSTEP in sync with the hardware BTF flag. */ clear_thread_flag(TIF_BLOCKSTEP); /* * If dr6 has no reason to give us about the origin of this trap, * then it's very likely the result of an icebp/int01 trap. * User wants a sigtrap for that. */ icebp = !dr6; if (notify_debug(regs, &dr6)) goto out; /* It's safe to allow irq's after DR6 has been saved */ local_irq_enable(); if (v8086_mode(regs)) { handle_vm86_trap((struct kernel_vm86_regs *)regs, 0, X86_TRAP_DB); goto out_irq; } /* #DB for bus lock can only be triggered from userspace. */ if (dr6 & DR_BUS_LOCK) handle_bus_lock(regs); /* Add the virtual_dr6 bits for signals. */ dr6 |= current->thread.virtual_dr6; if (dr6 & (DR_STEP | DR_TRAP_BITS) || icebp) send_sigtrap(regs, 0, get_si_code(dr6)); out_irq: local_irq_disable(); out: instrumentation_end(); irqentry_exit_to_user_mode(regs); } #ifdef CONFIG_X86_64 /* IST stack entry */ DEFINE_IDTENTRY_DEBUG(exc_debug) { exc_debug_kernel(regs, debug_read_reset_dr6()); } /* User entry, runs on regular task stack */ DEFINE_IDTENTRY_DEBUG_USER(exc_debug) { exc_debug_user(regs, debug_read_reset_dr6()); } #ifdef CONFIG_X86_FRED /* * When occurred on different ring level, i.e., from user or kernel * context, #DB needs to be handled on different stack: User #DB on * current task stack, while kernel #DB on a dedicated stack. * * This is exactly how FRED event delivery invokes an exception * handler: ring 3 event on level 0 stack, i.e., current task stack; * ring 0 event on the #DB dedicated stack specified in the * IA32_FRED_STKLVLS MSR. So unlike IDT, the FRED debug exception * entry stub doesn't do stack switch. */ DEFINE_FREDENTRY_DEBUG(exc_debug) { /* * FRED #DB stores DR6 on the stack in the format which * debug_read_reset_dr6() returns for the IDT entry points. */ unsigned long dr6 = fred_event_data(regs); if (user_mode(regs)) exc_debug_user(regs, dr6); else exc_debug_kernel(regs, dr6); } #endif /* CONFIG_X86_FRED */ #else /* 32 bit does not have separate entry points. */ DEFINE_IDTENTRY_RAW(exc_debug) { unsigned long dr6 = debug_read_reset_dr6(); if (user_mode(regs)) exc_debug_user(regs, dr6); else exc_debug_kernel(regs, dr6); } #endif /* * Note that we play around with the 'TS' bit in an attempt to get * the correct behaviour even in the presence of the asynchronous * IRQ13 behaviour */ static void math_error(struct pt_regs *regs, int trapnr) { struct task_struct *task = current; struct fpu *fpu = x86_task_fpu(task); int si_code; char *str = (trapnr == X86_TRAP_MF) ? "fpu exception" : "simd exception"; cond_local_irq_enable(regs); if (!user_mode(regs)) { if (fixup_exception(regs, trapnr, 0, 0)) goto exit; task->thread.error_code = 0; task->thread.trap_nr = trapnr; if (notify_die(DIE_TRAP, str, regs, 0, trapnr, SIGFPE) != NOTIFY_STOP) die(str, regs, 0); goto exit; } /* * Synchronize the FPU register state to the memory register state * if necessary. This allows the exception handler to inspect it. */ fpu_sync_fpstate(fpu); task->thread.trap_nr = trapnr; task->thread.error_code = 0; si_code = fpu__exception_code(fpu, trapnr); /* Retry when we get spurious exceptions: */ if (!si_code) goto exit; if (fixup_vdso_exception(regs, trapnr, 0, 0)) goto exit; force_sig_fault(SIGFPE, si_code, (void __user *)uprobe_get_trap_addr(regs)); exit: cond_local_irq_disable(regs); } DEFINE_IDTENTRY(exc_coprocessor_error) { math_error(regs, X86_TRAP_MF); } DEFINE_IDTENTRY(exc_simd_coprocessor_error) { if (IS_ENABLED(CONFIG_X86_INVD_BUG)) { /* AMD 486 bug: INVD in CPL 0 raises #XF instead of #GP */ if (!static_cpu_has(X86_FEATURE_XMM)) { __exc_general_protection(regs, 0); return; } } math_error(regs, X86_TRAP_XF); } DEFINE_IDTENTRY(exc_spurious_interrupt_bug) { /* * This addresses a Pentium Pro Erratum: * * PROBLEM: If the APIC subsystem is configured in mixed mode with * Virtual Wire mode implemented through the local APIC, an * interrupt vector of 0Fh (Intel reserved encoding) may be * generated by the local APIC (Int 15). This vector may be * generated upon receipt of a spurious interrupt (an interrupt * which is removed before the system receives the INTA sequence) * instead of the programmed 8259 spurious interrupt vector. * * IMPLICATION: The spurious interrupt vector programmed in the * 8259 is normally handled by an operating system's spurious * interrupt handler. However, a vector of 0Fh is unknown to some * operating systems, which would crash if this erratum occurred. * * In theory this could be limited to 32bit, but the handler is not * hurting and who knows which other CPUs suffer from this. */ } static bool handle_xfd_event(struct pt_regs *regs) { u64 xfd_err; int err; if (!IS_ENABLED(CONFIG_X86_64) || !cpu_feature_enabled(X86_FEATURE_XFD)) return false; rdmsrq(MSR_IA32_XFD_ERR, xfd_err); if (!xfd_err) return false; wrmsrq(MSR_IA32_XFD_ERR, 0); /* Die if that happens in kernel space */ if (WARN_ON(!user_mode(regs))) return false; local_irq_enable(); err = xfd_enable_feature(xfd_err); switch (err) { case -EPERM: force_sig_fault(SIGILL, ILL_ILLOPC, error_get_trap_addr(regs)); break; case -EFAULT: force_sig(SIGSEGV); break; } local_irq_disable(); return true; } DEFINE_IDTENTRY(exc_device_not_available) { unsigned long cr0 = read_cr0(); if (handle_xfd_event(regs)) return; #ifdef CONFIG_MATH_EMULATION if (!boot_cpu_has(X86_FEATURE_FPU) && (cr0 & X86_CR0_EM)) { struct math_emu_info info = { }; cond_local_irq_enable(regs); info.regs = regs; math_emulate(&info); cond_local_irq_disable(regs); return; } #endif /* This should not happen. */ if (WARN(cr0 & X86_CR0_TS, "CR0.TS was set")) { /* Try to fix it up and carry on. */ write_cr0(cr0 & ~X86_CR0_TS); } else { /* * Something terrible happened, and we're better off trying * to kill the task than getting stuck in a never-ending * loop of #NM faults. */ die("unexpected #NM exception", regs, 0); } } #ifdef CONFIG_INTEL_TDX_GUEST #define VE_FAULT_STR "VE fault" static void ve_raise_fault(struct pt_regs *regs, long error_code, unsigned long address) { if (user_mode(regs)) { gp_user_force_sig_segv(regs, X86_TRAP_VE, error_code, VE_FAULT_STR); return; } if (gp_try_fixup_and_notify(regs, X86_TRAP_VE, error_code, VE_FAULT_STR, address)) { return; } die_addr(VE_FAULT_STR, regs, error_code, address); } /* * Virtualization Exceptions (#VE) are delivered to TDX guests due to * specific guest actions which may happen in either user space or the * kernel: * * * Specific instructions (WBINVD, for example) * * Specific MSR accesses * * Specific CPUID leaf accesses * * Access to specific guest physical addresses * * In the settings that Linux will run in, virtualization exceptions are * never generated on accesses to normal, TD-private memory that has been * accepted (by BIOS or with tdx_enc_status_changed()). * * Syscall entry code has a critical window where the kernel stack is not * yet set up. Any exception in this window leads to hard to debug issues * and can be exploited for privilege escalation. Exceptions in the NMI * entry code also cause issues. Returning from the exception handler with * IRET will re-enable NMIs and nested NMI will corrupt the NMI stack. * * For these reasons, the kernel avoids #VEs during the syscall gap and * the NMI entry code. Entry code paths do not access TD-shared memory, * MMIO regions, use #VE triggering MSRs, instructions, or CPUID leaves * that might generate #VE. VMM can remove memory from TD at any point, * but access to unaccepted (or missing) private memory leads to VM * termination, not to #VE. * * Similarly to page faults and breakpoints, #VEs are allowed in NMI * handlers once the kernel is ready to deal with nested NMIs. * * During #VE delivery, all interrupts, including NMIs, are blocked until * TDGETVEINFO is called. It prevents #VE nesting until the kernel reads * the VE info. * * If a guest kernel action which would normally cause a #VE occurs in * the interrupt-disabled region before TDGETVEINFO, a #DF (fault * exception) is delivered to the guest which will result in an oops. * * The entry code has been audited carefully for following these expectations. * Changes in the entry code have to be audited for correctness vs. this * aspect. Similarly to #PF, #VE in these places will expose kernel to * privilege escalation or may lead to random crashes. */ DEFINE_IDTENTRY(exc_virtualization_exception) { struct ve_info ve; /* * NMIs/Machine-checks/Interrupts will be in a disabled state * till TDGETVEINFO TDCALL is executed. This ensures that VE * info cannot be overwritten by a nested #VE. */ tdx_get_ve_info(&ve); cond_local_irq_enable(regs); /* * If tdx_handle_virt_exception() could not process * it successfully, treat it as #GP(0) and handle it. */ if (!tdx_handle_virt_exception(regs, &ve)) ve_raise_fault(regs, 0, ve.gla); cond_local_irq_disable(regs); } #endif #ifdef CONFIG_X86_32 DEFINE_IDTENTRY_SW(iret_error) { local_irq_enable(); if (notify_die(DIE_TRAP, "iret exception", regs, 0, X86_TRAP_IRET, SIGILL) != NOTIFY_STOP) { do_trap(X86_TRAP_IRET, SIGILL, "iret exception", regs, 0, ILL_BADSTK, (void __user *)NULL); } local_irq_disable(); } #endif void __init trap_init(void) { /* Init cpu_entry_area before IST entries are set up */ setup_cpu_entry_areas(); /* Init GHCB memory pages when running as an SEV-ES guest */ sev_es_init_vc_handling(); /* Initialize TSS before setting up traps so ISTs work */ cpu_init_exception_handling(true); /* Setup traps as cpu_init() might #GP */ if (!cpu_feature_enabled(X86_FEATURE_FRED)) idt_setup_traps(); cpu_init(); } |
| 27 15 15 15 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* SPDX-License-Identifier: GPL-2.0 */ /* * A hash table (hashtab) maintains associations between * key values and datum values. The type of the key values * and the type of the datum values is arbitrary. The * functions for hash computation and key comparison are * provided by the creator of the table. * * Author : Stephen Smalley, <stephen.smalley.work@gmail.com> */ #ifndef _SS_HASHTAB_H_ #define _SS_HASHTAB_H_ #include <linux/types.h> #include <linux/errno.h> #include <linux/sched.h> #define HASHTAB_MAX_NODES U32_MAX struct hashtab_key_params { u32 (*hash)(const void *key); /* hash func */ int (*cmp)(const void *key1, const void *key2); /* comparison func */ }; struct hashtab_node { void *key; void *datum; struct hashtab_node *next; }; struct hashtab { struct hashtab_node **htable; /* hash table */ u32 size; /* number of slots in hash table */ u32 nel; /* number of elements in hash table */ }; struct hashtab_info { u32 slots_used; u32 max_chain_len; u64 chain2_len_sum; }; /* * Initializes a new hash table with the specified characteristics. * * Returns -ENOMEM if insufficient space is available or 0 otherwise. */ int hashtab_init(struct hashtab *h, u32 nel_hint); int __hashtab_insert(struct hashtab *h, struct hashtab_node **dst, void *key, void *datum); /* * Inserts the specified (key, datum) pair into the specified hash table. * * Returns -ENOMEM on memory allocation error, * -EEXIST if there is already an entry with the same key, * -EINVAL for general errors or 0 otherwise. */ static inline int hashtab_insert(struct hashtab *h, void *key, void *datum, struct hashtab_key_params key_params) { u32 hvalue; struct hashtab_node *prev, *cur; cond_resched(); if (!h->size || h->nel == HASHTAB_MAX_NODES) return -EINVAL; hvalue = key_params.hash(key) & (h->size - 1); prev = NULL; cur = h->htable[hvalue]; while (cur) { int cmp = key_params.cmp(key, cur->key); if (cmp == 0) return -EEXIST; if (cmp < 0) break; prev = cur; cur = cur->next; } return __hashtab_insert(h, prev ? &prev->next : &h->htable[hvalue], key, datum); } /* * Searches for the entry with the specified key in the hash table. * * Returns NULL if no entry has the specified key or * the datum of the entry otherwise. */ static inline void *hashtab_search(struct hashtab *h, const void *key, struct hashtab_key_params key_params) { u32 hvalue; struct hashtab_node *cur; if (!h->size) return NULL; hvalue = key_params.hash(key) & (h->size - 1); cur = h->htable[hvalue]; while (cur) { int cmp = key_params.cmp(key, cur->key); if (cmp == 0) return cur->datum; if (cmp < 0) break; cur = cur->next; } return NULL; } /* * Destroys the specified hash table. */ void hashtab_destroy(struct hashtab *h); /* * Applies the specified apply function to (key,datum,args) * for each entry in the specified hash table. * * The order in which the function is applied to the entries * is dependent upon the internal structure of the hash table. * * If apply returns a non-zero status, then hashtab_map will cease * iterating through the hash table and will propagate the error * return to its caller. */ int hashtab_map(struct hashtab *h, int (*apply)(void *k, void *d, void *args), void *args); int hashtab_duplicate(struct hashtab *new, const struct hashtab *orig, int (*copy)(struct hashtab_node *new, const struct hashtab_node *orig, void *args), int (*destroy)(void *k, void *d, void *args), void *args); #ifdef CONFIG_SECURITY_SELINUX_DEBUG /* Fill info with some hash table statistics */ void hashtab_stat(struct hashtab *h, struct hashtab_info *info); #else static inline void hashtab_stat(struct hashtab *h, struct hashtab_info *info) { return; } #endif #endif /* _SS_HASHTAB_H */ |
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AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/moduleparam.h> #include <linux/errno.h> #include <linux/export.h> #include <linux/of.h> #include <linux/mmc/sdio_func.h> #include <linux/vmalloc.h> #include "core.h" #include "cfg80211.h" #include "target.h" #include "debug.h" #include "hif-ops.h" #include "htc-ops.h" static const struct ath6kl_hw hw_list[] = { { .id = AR6003_HW_2_0_VERSION, .name = "ar6003 hw 2.0", .dataset_patch_addr = 0x57e884, .app_load_addr = 0x543180, .board_ext_data_addr = 0x57e500, .reserved_ram_size = 6912, .refclk_hz = 26000000, .uarttx_pin = 8, .flags = ATH6KL_HW_SDIO_CRC_ERROR_WAR, /* hw2.0 needs override address hardcoded */ .app_start_override_addr = 0x944C00, .fw = { .dir = AR6003_HW_2_0_FW_DIR, .otp = AR6003_HW_2_0_OTP_FILE, .fw = AR6003_HW_2_0_FIRMWARE_FILE, .tcmd = AR6003_HW_2_0_TCMD_FIRMWARE_FILE, .patch = AR6003_HW_2_0_PATCH_FILE, }, .fw_board = AR6003_HW_2_0_BOARD_DATA_FILE, .fw_default_board = AR6003_HW_2_0_DEFAULT_BOARD_DATA_FILE, }, { .id = AR6003_HW_2_1_1_VERSION, .name = "ar6003 hw 2.1.1", .dataset_patch_addr = 0x57ff74, .app_load_addr = 0x1234, .board_ext_data_addr = 0x542330, .reserved_ram_size = 512, .refclk_hz = 26000000, .uarttx_pin = 8, .testscript_addr = 0x57ef74, .flags = ATH6KL_HW_SDIO_CRC_ERROR_WAR, .fw = { .dir = AR6003_HW_2_1_1_FW_DIR, .otp = AR6003_HW_2_1_1_OTP_FILE, .fw = AR6003_HW_2_1_1_FIRMWARE_FILE, .tcmd = AR6003_HW_2_1_1_TCMD_FIRMWARE_FILE, .patch = AR6003_HW_2_1_1_PATCH_FILE, .utf = AR6003_HW_2_1_1_UTF_FIRMWARE_FILE, .testscript = AR6003_HW_2_1_1_TESTSCRIPT_FILE, }, .fw_board = AR6003_HW_2_1_1_BOARD_DATA_FILE, .fw_default_board = AR6003_HW_2_1_1_DEFAULT_BOARD_DATA_FILE, }, { .id = AR6004_HW_1_0_VERSION, .name = "ar6004 hw 1.0", .dataset_patch_addr = 0x57e884, .app_load_addr = 0x1234, .board_ext_data_addr = 0x437000, .reserved_ram_size = 19456, .board_addr = 0x433900, .refclk_hz = 26000000, .uarttx_pin = 11, .flags = 0, .fw = { .dir = AR6004_HW_1_0_FW_DIR, .fw = AR6004_HW_1_0_FIRMWARE_FILE, }, .fw_board = AR6004_HW_1_0_BOARD_DATA_FILE, .fw_default_board = AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE, }, { .id = AR6004_HW_1_1_VERSION, .name = "ar6004 hw 1.1", .dataset_patch_addr = 0x57e884, .app_load_addr = 0x1234, .board_ext_data_addr = 0x437000, .reserved_ram_size = 11264, .board_addr = 0x43d400, .refclk_hz = 40000000, .uarttx_pin = 11, .flags = 0, .fw = { .dir = AR6004_HW_1_1_FW_DIR, .fw = AR6004_HW_1_1_FIRMWARE_FILE, }, .fw_board = AR6004_HW_1_1_BOARD_DATA_FILE, .fw_default_board = AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE, }, { .id = AR6004_HW_1_2_VERSION, .name = "ar6004 hw 1.2", .dataset_patch_addr = 0x436ecc, .app_load_addr = 0x1234, .board_ext_data_addr = 0x437000, .reserved_ram_size = 9216, .board_addr = 0x435c00, .refclk_hz = 40000000, .uarttx_pin = 11, .flags = 0, .fw = { .dir = AR6004_HW_1_2_FW_DIR, .fw = AR6004_HW_1_2_FIRMWARE_FILE, }, .fw_board = AR6004_HW_1_2_BOARD_DATA_FILE, .fw_default_board = AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE, }, { .id = AR6004_HW_1_3_VERSION, .name = "ar6004 hw 1.3", .dataset_patch_addr = 0x437860, .app_load_addr = 0x1234, .board_ext_data_addr = 0x437000, .reserved_ram_size = 7168, .board_addr = 0x436400, .refclk_hz = 0, .uarttx_pin = 11, .flags = 0, .fw = { .dir = AR6004_HW_1_3_FW_DIR, .fw = AR6004_HW_1_3_FIRMWARE_FILE, .tcmd = AR6004_HW_1_3_TCMD_FIRMWARE_FILE, .utf = AR6004_HW_1_3_UTF_FIRMWARE_FILE, .testscript = AR6004_HW_1_3_TESTSCRIPT_FILE, }, .fw_board = AR6004_HW_1_3_BOARD_DATA_FILE, .fw_default_board = AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE, }, { .id = AR6004_HW_3_0_VERSION, .name = "ar6004 hw 3.0", .dataset_patch_addr = 0, .app_load_addr = 0x1234, .board_ext_data_addr = 0, .reserved_ram_size = 7168, .board_addr = 0x436400, .testscript_addr = 0, .uarttx_pin = 11, .flags = 0, .fw = { .dir = AR6004_HW_3_0_FW_DIR, .fw = AR6004_HW_3_0_FIRMWARE_FILE, .tcmd = AR6004_HW_3_0_TCMD_FIRMWARE_FILE, .utf = AR6004_HW_3_0_UTF_FIRMWARE_FILE, .testscript = AR6004_HW_3_0_TESTSCRIPT_FILE, }, .fw_board = AR6004_HW_3_0_BOARD_DATA_FILE, .fw_default_board = AR6004_HW_3_0_DEFAULT_BOARD_DATA_FILE, }, }; /* * Include definitions here that can be used to tune the WLAN module * behavior. Different customers can tune the behavior as per their needs, * here. */ /* * This configuration item enable/disable keepalive support. * Keepalive support: In the absence of any data traffic to AP, null * frames will be sent to the AP at periodic interval, to keep the association * active. This configuration item defines the periodic interval. * Use value of zero to disable keepalive support * Default: 60 seconds */ #define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60 /* * This configuration item sets the value of disconnect timeout * Firmware delays sending the disconnect event to the host for this * timeout after is gets disconnected from the current AP. * If the firmware successly roams within the disconnect timeout * it sends a new connect event */ #define WLAN_CONFIG_DISCONNECT_TIMEOUT 10 #define ATH6KL_DATA_OFFSET 64 struct sk_buff *ath6kl_buf_alloc(int size) { struct sk_buff *skb; u16 reserved; /* Add cacheline space at front and back of buffer */ reserved = roundup((2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET + sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES, 4); skb = dev_alloc_skb(size + reserved); if (skb) skb_reserve(skb, reserved - L1_CACHE_BYTES); return skb; } void ath6kl_init_profile_info(struct ath6kl_vif *vif) { vif->ssid_len = 0; memset(vif->ssid, 0, sizeof(vif->ssid)); vif->dot11_auth_mode = OPEN_AUTH; vif->auth_mode = NONE_AUTH; vif->prwise_crypto = NONE_CRYPT; vif->prwise_crypto_len = 0; vif->grp_crypto = NONE_CRYPT; vif->grp_crypto_len = 0; memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); memset(vif->bssid, 0, sizeof(vif->bssid)); vif->bss_ch = 0; } static int ath6kl_set_host_app_area(struct ath6kl *ar) { u32 address, data; struct host_app_area host_app_area; /* Fetch the address of the host_app_area_s * instance in the host interest area */ address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest)); address = TARG_VTOP(ar->target_type, address); if (ath6kl_diag_read32(ar, address, &data)) return -EIO; address = TARG_VTOP(ar->target_type, data); host_app_area.wmi_protocol_ver = cpu_to_le32(WMI_PROTOCOL_VERSION); if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area, sizeof(struct host_app_area))) return -EIO; return 0; } static inline void set_ac2_ep_map(struct ath6kl *ar, u8 ac, enum htc_endpoint_id ep) { ar->ac2ep_map[ac] = ep; ar->ep2ac_map[ep] = ac; } /* connect to a service */ static int ath6kl_connectservice(struct ath6kl *ar, struct htc_service_connect_req *con_req, char *desc) { int status; struct htc_service_connect_resp response; memset(&response, 0, sizeof(response)); status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response); if (status) { ath6kl_err("failed to connect to %s service status:%d\n", desc, status); return status; } switch (con_req->svc_id) { case WMI_CONTROL_SVC: if (test_bit(WMI_ENABLED, &ar->flag)) ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint); ar->ctrl_ep = response.endpoint; break; case WMI_DATA_BE_SVC: set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint); break; case WMI_DATA_BK_SVC: set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint); break; case WMI_DATA_VI_SVC: set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint); break; case WMI_DATA_VO_SVC: set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint); break; default: ath6kl_err("service id is not mapped %d\n", con_req->svc_id); return -EINVAL; } return 0; } static int ath6kl_init_service_ep(struct ath6kl *ar) { struct htc_service_connect_req connect; memset(&connect, 0, sizeof(connect)); /* these fields are the same for all service endpoints */ connect.ep_cb.tx_comp_multi = ath6kl_tx_complete; connect.ep_cb.rx = ath6kl_rx; connect.ep_cb.rx_refill = ath6kl_rx_refill; connect.ep_cb.tx_full = ath6kl_tx_queue_full; /* * Set the max queue depth so that our ath6kl_tx_queue_full handler * gets called. */ connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH; connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4; if (!connect.ep_cb.rx_refill_thresh) connect.ep_cb.rx_refill_thresh++; /* connect to control service */ connect.svc_id = WMI_CONTROL_SVC; if (ath6kl_connectservice(ar, &connect, "WMI CONTROL")) return -EIO; connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN; /* * Limit the HTC message size on the send path, although e can * receive A-MSDU frames of 4K, we will only send ethernet-sized * (802.3) frames on the send path. */ connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH; /* * To reduce the amount of committed memory for larger A_MSDU * frames, use the recv-alloc threshold mechanism for larger * packets. */ connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE; connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf; /* * For the remaining data services set the connection flag to * reduce dribbling, if configured to do so. */ connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB; connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK; connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF; connect.svc_id = WMI_DATA_BE_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA BE")) return -EIO; /* connect to back-ground map this to WMI LOW_PRI */ connect.svc_id = WMI_DATA_BK_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA BK")) return -EIO; /* connect to Video service, map this to HI PRI */ connect.svc_id = WMI_DATA_VI_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA VI")) return -EIO; /* * Connect to VO service, this is currently not mapped to a WMI * priority stream due to historical reasons. WMI originally * defined 3 priorities over 3 mailboxes We can change this when * WMI is reworked so that priorities are not dependent on * mailboxes. */ connect.svc_id = WMI_DATA_VO_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA VO")) return -EIO; return 0; } void ath6kl_init_control_info(struct ath6kl_vif *vif) { ath6kl_init_profile_info(vif); vif->def_txkey_index = 0; memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); vif->ch_hint = 0; } /* * Set HTC/Mbox operational parameters, this can only be called when the * target is in the BMI phase. */ static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val, u8 htc_ctrl_buf) { int status; u32 blk_size; blk_size = ar->mbox_info.block_size; if (htc_ctrl_buf) blk_size |= ((u32)htc_ctrl_buf) << 16; /* set the host interest area for the block size */ status = ath6kl_bmi_write_hi32(ar, hi_mbox_io_block_sz, blk_size); if (status) { ath6kl_err("bmi_write_memory for IO block size failed\n"); goto out; } ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n", blk_size, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz))); if (mbox_isr_yield_val) { /* set the host interest area for the mbox ISR yield limit */ status = ath6kl_bmi_write_hi32(ar, hi_mbox_isr_yield_limit, mbox_isr_yield_val); if (status) { ath6kl_err("bmi_write_memory for yield limit failed\n"); goto out; } } out: return status; } static int ath6kl_target_config_wlan_params(struct ath6kl *ar, int idx) { int ret; /* * Configure the device for rx dot11 header rules. "0,0" are the * default values. Required if checksum offload is needed. Set * RxMetaVersion to 2. */ ret = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, idx, ar->rx_meta_ver, 0, 0); if (ret) { ath6kl_err("unable to set the rx frame format: %d\n", ret); return ret; } if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) { ret = ath6kl_wmi_pmparams_cmd(ar->wmi, idx, 0, 1, 0, 0, 1, IGNORE_PS_FAIL_DURING_SCAN); if (ret) { ath6kl_err("unable to set power save fail event policy: %d\n", ret); return ret; } } if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) { ret = ath6kl_wmi_set_lpreamble_cmd(ar->wmi, idx, 0, WMI_FOLLOW_BARKER_IN_ERP); if (ret) { ath6kl_err("unable to set barker preamble policy: %d\n", ret); return ret; } } ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, idx, WLAN_CONFIG_KEEP_ALIVE_INTERVAL); if (ret) { ath6kl_err("unable to set keep alive interval: %d\n", ret); return ret; } ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, idx, WLAN_CONFIG_DISCONNECT_TIMEOUT); if (ret) { ath6kl_err("unable to set disconnect timeout: %d\n", ret); return ret; } if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) { ret = ath6kl_wmi_set_wmm_txop(ar->wmi, idx, WMI_TXOP_DISABLED); if (ret) { ath6kl_err("unable to set txop bursting: %d\n", ret); return ret; } } if (ar->p2p && (ar->vif_max == 1 || idx)) { ret = ath6kl_wmi_info_req_cmd(ar->wmi, idx, P2P_FLAG_CAPABILITIES_REQ | P2P_FLAG_MACADDR_REQ | P2P_FLAG_HMODEL_REQ); if (ret) { ath6kl_dbg(ATH6KL_DBG_TRC, "failed to request P2P capabilities (%d) - assuming P2P not supported\n", ret); ar->p2p = false; } } if (ar->p2p && (ar->vif_max == 1 || idx)) { /* Enable Probe Request reporting for P2P */ ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, idx, true); if (ret) { ath6kl_dbg(ATH6KL_DBG_TRC, "failed to enable Probe Request reporting (%d)\n", ret); } } return ret; } int ath6kl_configure_target(struct ath6kl *ar) { u32 param, ram_reserved_size; u8 fw_iftype, fw_mode = 0, fw_submode = 0; int i, status; param = !!(ar->conf_flags & ATH6KL_CONF_UART_DEBUG); if (ath6kl_bmi_write_hi32(ar, hi_serial_enable, param)) { ath6kl_err("bmi_write_memory for uart debug failed\n"); return -EIO; } /* * Note: Even though the firmware interface type is * chosen as BSS_STA for all three interfaces, can * be configured to IBSS/AP as long as the fw submode * remains normal mode (0 - AP, STA and IBSS). But * due to an target assert in firmware only one interface is * configured for now. */ fw_iftype = HI_OPTION_FW_MODE_BSS_STA; for (i = 0; i < ar->vif_max; i++) fw_mode |= fw_iftype << (i * HI_OPTION_FW_MODE_BITS); /* * Submodes when fw does not support dynamic interface * switching: * vif[0] - AP/STA/IBSS * vif[1] - "P2P dev"/"P2P GO"/"P2P Client" * vif[2] - "P2P dev"/"P2P GO"/"P2P Client" * Otherwise, All the interface are initialized to p2p dev. */ if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, ar->fw_capabilities)) { for (i = 0; i < ar->vif_max; i++) fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV << (i * HI_OPTION_FW_SUBMODE_BITS); } else { for (i = 0; i < ar->max_norm_iface; i++) fw_submode |= HI_OPTION_FW_SUBMODE_NONE << (i * HI_OPTION_FW_SUBMODE_BITS); for (i = ar->max_norm_iface; i < ar->vif_max; i++) fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV << (i * HI_OPTION_FW_SUBMODE_BITS); if (ar->p2p && ar->vif_max == 1) fw_submode = HI_OPTION_FW_SUBMODE_P2PDEV; } if (ath6kl_bmi_write_hi32(ar, hi_app_host_interest, HTC_PROTOCOL_VERSION) != 0) { ath6kl_err("bmi_write_memory for htc version failed\n"); return -EIO; } /* set the firmware mode to STA/IBSS/AP */ param = 0; if (ath6kl_bmi_read_hi32(ar, hi_option_flag, ¶m) != 0) { ath6kl_err("bmi_read_memory for setting fwmode failed\n"); return -EIO; } param |= (ar->vif_max << HI_OPTION_NUM_DEV_SHIFT); param |= fw_mode << HI_OPTION_FW_MODE_SHIFT; param |= fw_submode << HI_OPTION_FW_SUBMODE_SHIFT; param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT); param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT); if (ath6kl_bmi_write_hi32(ar, hi_option_flag, param) != 0) { ath6kl_err("bmi_write_memory for setting fwmode failed\n"); return -EIO; } ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n"); /* * Hardcode the address use for the extended board data * Ideally this should be pre-allocate by the OS at boot time * But since it is a new feature and board data is loaded * at init time, we have to workaround this from host. * It is difficult to patch the firmware boot code, * but possible in theory. */ if ((ar->target_type == TARGET_TYPE_AR6003) || (ar->version.target_ver == AR6004_HW_1_3_VERSION) || (ar->version.target_ver == AR6004_HW_3_0_VERSION)) { param = ar->hw.board_ext_data_addr; ram_reserved_size = ar->hw.reserved_ram_size; if (ath6kl_bmi_write_hi32(ar, hi_board_ext_data, param) != 0) { ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n"); return -EIO; } if (ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz, ram_reserved_size) != 0) { ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n"); return -EIO; } } /* set the block size for the target */ if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0)) /* use default number of control buffers */ return -EIO; /* Configure GPIO AR600x UART */ status = ath6kl_bmi_write_hi32(ar, hi_dbg_uart_txpin, ar->hw.uarttx_pin); if (status) return status; /* Only set the baud rate if we're actually doing debug */ if (ar->conf_flags & ATH6KL_CONF_UART_DEBUG) { status = ath6kl_bmi_write_hi32(ar, hi_desired_baud_rate, ar->hw.uarttx_rate); if (status) return status; } /* Configure target refclk_hz */ if (ar->hw.refclk_hz != 0) { status = ath6kl_bmi_write_hi32(ar, hi_refclk_hz, ar->hw.refclk_hz); if (status) return status; } return 0; } /* firmware upload */ static int ath6kl_get_fw(struct ath6kl *ar, const char *filename, u8 **fw, size_t *fw_len) { const struct firmware *fw_entry; int ret; ret = request_firmware(&fw_entry, filename, ar->dev); if (ret) return ret; *fw_len = fw_entry->size; *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL); if (*fw == NULL) ret = -ENOMEM; release_firmware(fw_entry); return ret; } #ifdef CONFIG_OF /* * Check the device tree for a board-id and use it to construct * the pathname to the firmware file. Used (for now) to find a * fallback to the "bdata.bin" file--typically a symlink to the * appropriate board-specific file. */ static bool check_device_tree(struct ath6kl *ar) { static const char *board_id_prop = "atheros,board-id"; struct device_node *node; char board_filename[64]; const char *board_id; int ret; for_each_compatible_node(node, NULL, "atheros,ath6kl") { board_id = of_get_property(node, board_id_prop, NULL); if (board_id == NULL) { ath6kl_warn("No \"%s\" property on %pOFn node.\n", board_id_prop, node); continue; } snprintf(board_filename, sizeof(board_filename), "%s/bdata.%s.bin", ar->hw.fw.dir, board_id); ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board, &ar->fw_board_len); if (ret) { ath6kl_err("Failed to get DT board file %s: %d\n", board_filename, ret); continue; } of_node_put(node); return true; } return false; } #else static bool check_device_tree(struct ath6kl *ar) { return false; } #endif /* CONFIG_OF */ static int ath6kl_fetch_board_file(struct ath6kl *ar) { const char *filename; int ret; if (ar->fw_board != NULL) return 0; if (WARN_ON(ar->hw.fw_board == NULL)) return -EINVAL; filename = ar->hw.fw_board; ret = ath6kl_get_fw(ar, filename, &ar->fw_board, &ar->fw_board_len); if (ret == 0) { /* managed to get proper board file */ return 0; } if (check_device_tree(ar)) { /* got board file from device tree */ return 0; } /* there was no proper board file, try to use default instead */ ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n", filename, ret); filename = ar->hw.fw_default_board; ret = ath6kl_get_fw(ar, filename, &ar->fw_board, &ar->fw_board_len); if (ret) { ath6kl_err("Failed to get default board file %s: %d\n", filename, ret); return ret; } ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n"); ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n"); return 0; } static int ath6kl_fetch_otp_file(struct ath6kl *ar) { char filename[100]; int ret; if (ar->fw_otp != NULL) return 0; if (ar->hw.fw.otp == NULL) { ath6kl_dbg(ATH6KL_DBG_BOOT, "no OTP file configured for this hw\n"); return 0; } snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, ar->hw.fw.otp); ret = ath6kl_get_fw(ar, filename, &ar->fw_otp, &ar->fw_otp_len); if (ret) { ath6kl_err("Failed to get OTP file %s: %d\n", filename, ret); return ret; } return 0; } static int ath6kl_fetch_testmode_file(struct ath6kl *ar) { char filename[100]; int ret; if (ar->testmode == 0) return 0; ath6kl_dbg(ATH6KL_DBG_BOOT, "testmode %d\n", ar->testmode); if (ar->testmode == 2) { if (ar->hw.fw.utf == NULL) { ath6kl_warn("testmode 2 not supported\n"); return -EOPNOTSUPP; } snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, ar->hw.fw.utf); } else { if (ar->hw.fw.tcmd == NULL) { ath6kl_warn("testmode 1 not supported\n"); return -EOPNOTSUPP; } snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, ar->hw.fw.tcmd); } set_bit(TESTMODE, &ar->flag); ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len); if (ret) { ath6kl_err("Failed to get testmode %d firmware file %s: %d\n", ar->testmode, filename, ret); return ret; } return 0; } static int ath6kl_fetch_fw_file(struct ath6kl *ar) { char filename[100]; int ret; if (ar->fw != NULL) return 0; /* FIXME: remove WARN_ON() as we won't support FW API 1 for long */ if (WARN_ON(ar->hw.fw.fw == NULL)) return -EINVAL; snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, ar->hw.fw.fw); ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len); if (ret) { ath6kl_err("Failed to get firmware file %s: %d\n", filename, ret); return ret; } return 0; } static int ath6kl_fetch_patch_file(struct ath6kl *ar) { char filename[100]; int ret; if (ar->fw_patch != NULL) return 0; if (ar->hw.fw.patch == NULL) return 0; snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, ar->hw.fw.patch); ret = ath6kl_get_fw(ar, filename, &ar->fw_patch, &ar->fw_patch_len); if (ret) { ath6kl_err("Failed to get patch file %s: %d\n", filename, ret); return ret; } return 0; } static int ath6kl_fetch_testscript_file(struct ath6kl *ar) { char filename[100]; int ret; if (ar->testmode != 2) return 0; if (ar->fw_testscript != NULL) return 0; if (ar->hw.fw.testscript == NULL) return 0; snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, ar->hw.fw.testscript); ret = ath6kl_get_fw(ar, filename, &ar->fw_testscript, &ar->fw_testscript_len); if (ret) { ath6kl_err("Failed to get testscript file %s: %d\n", filename, ret); return ret; } return 0; } static int ath6kl_fetch_fw_api1(struct ath6kl *ar) { int ret; ret = ath6kl_fetch_otp_file(ar); if (ret) return ret; ret = ath6kl_fetch_fw_file(ar); if (ret) return ret; ret = ath6kl_fetch_patch_file(ar); if (ret) return ret; ret = ath6kl_fetch_testscript_file(ar); if (ret) return ret; return 0; } static int ath6kl_fetch_fw_apin(struct ath6kl *ar, const char *name) { size_t magic_len, len, ie_len; const struct firmware *fw; struct ath6kl_fw_ie *hdr; char filename[100]; const u8 *data; int ret, ie_id, i, index, bit; __le32 *val; snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, name); ret = request_firmware(&fw, filename, ar->dev); if (ret) { ath6kl_err("Failed request firmware, rv: %d\n", ret); return ret; } data = fw->data; len = fw->size; /* magic also includes the null byte, check that as well */ magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1; if (len < magic_len) { ath6kl_err("Magic length is invalid, len: %zd magic_len: %zd\n", len, magic_len); ret = -EINVAL; goto out; } if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) { ath6kl_err("Magic is invalid, magic_len: %zd\n", magic_len); ret = -EINVAL; goto out; } len -= magic_len; data += magic_len; /* loop elements */ while (len > sizeof(struct ath6kl_fw_ie)) { /* hdr is unaligned! */ hdr = (struct ath6kl_fw_ie *) data; ie_id = le32_to_cpup(&hdr->id); ie_len = le32_to_cpup(&hdr->len); len -= sizeof(*hdr); data += sizeof(*hdr); ath6kl_dbg(ATH6KL_DBG_BOOT, "ie-id: %d len: %zd (0x%zx)\n", ie_id, ie_len, ie_len); if (len < ie_len) { ath6kl_err("IE len is invalid, len: %zd ie_len: %zd ie-id: %d\n", len, ie_len, ie_id); ret = -EINVAL; goto out; } switch (ie_id) { case ATH6KL_FW_IE_FW_VERSION: strscpy(ar->wiphy->fw_version, data, min(sizeof(ar->wiphy->fw_version), ie_len+1)); ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw version %s\n", ar->wiphy->fw_version); break; case ATH6KL_FW_IE_OTP_IMAGE: ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n", ie_len); ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL); if (ar->fw_otp == NULL) { ath6kl_err("fw_otp cannot be allocated\n"); ret = -ENOMEM; goto out; } ar->fw_otp_len = ie_len; break; case ATH6KL_FW_IE_FW_IMAGE: ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n", ie_len); /* in testmode we already might have a fw file */ if (ar->fw != NULL) break; ar->fw = vmalloc(ie_len); if (ar->fw == NULL) { ath6kl_err("fw storage cannot be allocated, len: %zd\n", ie_len); ret = -ENOMEM; goto out; } memcpy(ar->fw, data, ie_len); ar->fw_len = ie_len; break; case ATH6KL_FW_IE_PATCH_IMAGE: ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n", ie_len); ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL); if (ar->fw_patch == NULL) { ath6kl_err("fw_patch storage cannot be allocated, len: %zd\n", ie_len); ret = -ENOMEM; goto out; } ar->fw_patch_len = ie_len; break; case ATH6KL_FW_IE_RESERVED_RAM_SIZE: val = (__le32 *) data; ar->hw.reserved_ram_size = le32_to_cpup(val); ath6kl_dbg(ATH6KL_DBG_BOOT, "found reserved ram size ie %d\n", ar->hw.reserved_ram_size); break; case ATH6KL_FW_IE_CAPABILITIES: ath6kl_dbg(ATH6KL_DBG_BOOT, "found firmware capabilities ie (%zd B)\n", ie_len); for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) { index = i / 8; bit = i % 8; if (index == ie_len) break; if (data[index] & (1 << bit)) __set_bit(i, ar->fw_capabilities); } ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "", ar->fw_capabilities, sizeof(ar->fw_capabilities)); break; case ATH6KL_FW_IE_PATCH_ADDR: if (ie_len != sizeof(*val)) break; val = (__le32 *) data; ar->hw.dataset_patch_addr = le32_to_cpup(val); ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch address ie 0x%x\n", ar->hw.dataset_patch_addr); break; case ATH6KL_FW_IE_BOARD_ADDR: if (ie_len != sizeof(*val)) break; val = (__le32 *) data; ar->hw.board_addr = le32_to_cpup(val); ath6kl_dbg(ATH6KL_DBG_BOOT, "found board address ie 0x%x\n", ar->hw.board_addr); break; case ATH6KL_FW_IE_VIF_MAX: if (ie_len != sizeof(*val)) break; val = (__le32 *) data; ar->vif_max = min_t(unsigned int, le32_to_cpup(val), ATH6KL_VIF_MAX); if (ar->vif_max > 1 && !ar->p2p) ar->max_norm_iface = 2; ath6kl_dbg(ATH6KL_DBG_BOOT, "found vif max ie %d\n", ar->vif_max); break; default: ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n", le32_to_cpup(&hdr->id)); break; } len -= ie_len; data += ie_len; } ret = 0; out: release_firmware(fw); return ret; } int ath6kl_init_fetch_firmwares(struct ath6kl *ar) { int ret; ret = ath6kl_fetch_board_file(ar); if (ret) return ret; ret = ath6kl_fetch_testmode_file(ar); if (ret) return ret; ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API5_FILE); if (ret == 0) { ar->fw_api = 5; goto out; } ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API4_FILE); if (ret == 0) { ar->fw_api = 4; goto out; } ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API3_FILE); if (ret == 0) { ar->fw_api = 3; goto out; } ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API2_FILE); if (ret == 0) { ar->fw_api = 2; goto out; } ret = ath6kl_fetch_fw_api1(ar); if (ret) return ret; ar->fw_api = 1; out: ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api %d\n", ar->fw_api); return 0; } static int ath6kl_upload_board_file(struct ath6kl *ar) { u32 board_address, board_ext_address, param; u32 board_data_size, board_ext_data_size; int ret; if (WARN_ON(ar->fw_board == NULL)) return -ENOENT; /* * Determine where in Target RAM to write Board Data. * For AR6004, host determine Target RAM address for * writing board data. */ if (ar->hw.board_addr != 0) { board_address = ar->hw.board_addr; ath6kl_bmi_write_hi32(ar, hi_board_data, board_address); } else { ret = ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address); if (ret) { ath6kl_err("Failed to get board file target address.\n"); return ret; } } /* determine where in target ram to write extended board data */ ret = ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address); if (ret) { ath6kl_err("Failed to get extended board file target address.\n"); return ret; } if (ar->target_type == TARGET_TYPE_AR6003 && board_ext_address == 0) { ath6kl_err("Failed to get board file target address.\n"); return -EINVAL; } switch (ar->target_type) { case TARGET_TYPE_AR6003: board_data_size = AR6003_BOARD_DATA_SZ; board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ; if (ar->fw_board_len > (board_data_size + board_ext_data_size)) board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ_V2; break; case TARGET_TYPE_AR6004: board_data_size = AR6004_BOARD_DATA_SZ; board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ; break; default: WARN_ON(1); return -EINVAL; } if (board_ext_address && ar->fw_board_len == (board_data_size + board_ext_data_size)) { /* write extended board data */ ath6kl_dbg(ATH6KL_DBG_BOOT, "writing extended board data to 0x%x (%d B)\n", board_ext_address, board_ext_data_size); ret = ath6kl_bmi_write(ar, board_ext_address, ar->fw_board + board_data_size, board_ext_data_size); if (ret) { ath6kl_err("Failed to write extended board data: %d\n", ret); return ret; } /* record that extended board data is initialized */ param = (board_ext_data_size << 16) | 1; ath6kl_bmi_write_hi32(ar, hi_board_ext_data_config, param); } if (ar->fw_board_len < board_data_size) { ath6kl_err("Too small board file: %zu\n", ar->fw_board_len); ret = -EINVAL; return ret; } ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n", board_address, board_data_size); ret = ath6kl_bmi_write(ar, board_address, ar->fw_board, board_data_size); if (ret) { ath6kl_err("Board file bmi write failed: %d\n", ret); return ret; } /* record the fact that Board Data IS initialized */ if ((ar->version.target_ver == AR6004_HW_1_3_VERSION) || (ar->version.target_ver == AR6004_HW_3_0_VERSION)) param = board_data_size; else param = 1; ath6kl_bmi_write_hi32(ar, hi_board_data_initialized, param); return ret; } static int ath6kl_upload_otp(struct ath6kl *ar) { u32 address, param; bool from_hw = false; int ret; if (ar->fw_otp == NULL) return 0; address = ar->hw.app_load_addr; ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address, ar->fw_otp_len); ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp, ar->fw_otp_len); if (ret) { ath6kl_err("Failed to upload OTP file: %d\n", ret); return ret; } /* read firmware start address */ ret = ath6kl_bmi_read_hi32(ar, hi_app_start, &address); if (ret) { ath6kl_err("Failed to read hi_app_start: %d\n", ret); return ret; } if (ar->hw.app_start_override_addr == 0) { ar->hw.app_start_override_addr = address; from_hw = true; } ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n", from_hw ? " (from hw)" : "", ar->hw.app_start_override_addr); /* execute the OTP code */ ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n", ar->hw.app_start_override_addr); param = 0; ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, ¶m); return ret; } static int ath6kl_upload_firmware(struct ath6kl *ar) { u32 address; int ret; if (WARN_ON(ar->fw == NULL)) return 0; address = ar->hw.app_load_addr; ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n", address, ar->fw_len); ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len); if (ret) { ath6kl_err("Failed to write firmware: %d\n", ret); return ret; } /* * Set starting address for firmware * Don't need to setup app_start override addr on AR6004 */ if (ar->target_type != TARGET_TYPE_AR6004) { address = ar->hw.app_start_override_addr; ath6kl_bmi_set_app_start(ar, address); } return ret; } static int ath6kl_upload_patch(struct ath6kl *ar) { u32 address; int ret; if (ar->fw_patch == NULL) return 0; address = ar->hw.dataset_patch_addr; ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n", address, ar->fw_patch_len); ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len); if (ret) { ath6kl_err("Failed to write patch file: %d\n", ret); return ret; } ath6kl_bmi_write_hi32(ar, hi_dset_list_head, address); return 0; } static int ath6kl_upload_testscript(struct ath6kl *ar) { u32 address; int ret; if (ar->testmode != 2) return 0; if (ar->fw_testscript == NULL) return 0; address = ar->hw.testscript_addr; ath6kl_dbg(ATH6KL_DBG_BOOT, "writing testscript to 0x%x (%zd B)\n", address, ar->fw_testscript_len); ret = ath6kl_bmi_write(ar, address, ar->fw_testscript, ar->fw_testscript_len); if (ret) { ath6kl_err("Failed to write testscript file: %d\n", ret); return ret; } ath6kl_bmi_write_hi32(ar, hi_ota_testscript, address); if ((ar->version.target_ver != AR6004_HW_1_3_VERSION) && (ar->version.target_ver != AR6004_HW_3_0_VERSION)) ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz, 4096); ath6kl_bmi_write_hi32(ar, hi_test_apps_related, 1); return 0; } static int ath6kl_init_upload(struct ath6kl *ar) { u32 param, options, sleep, address; int status = 0; if (ar->target_type != TARGET_TYPE_AR6003 && ar->target_type != TARGET_TYPE_AR6004) return -EINVAL; /* temporarily disable system sleep */ address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; status = ath6kl_bmi_reg_read(ar, address, ¶m); if (status) return status; options = param; param |= ATH6KL_OPTION_SLEEP_DISABLE; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; status = ath6kl_bmi_reg_read(ar, address, ¶m); if (status) return status; sleep = param; param |= SM(SYSTEM_SLEEP_DISABLE, 1); status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n", options, sleep); /* program analog PLL register */ /* no need to control 40/44MHz clock on AR6004 */ if (ar->target_type != TARGET_TYPE_AR6004) { status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER, 0xF9104001); if (status) return status; /* Run at 80/88MHz by default */ param = SM(CPU_CLOCK_STANDARD, 1); address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; } param = 0; address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS; param = SM(LPO_CAL_ENABLE, 1); status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; /* WAR to avoid SDIO CRC err */ if (ar->hw.flags & ATH6KL_HW_SDIO_CRC_ERROR_WAR) { ath6kl_err("temporary war to avoid sdio crc error\n"); param = 0x28; address = GPIO_BASE_ADDRESS + GPIO_PIN9_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; param = 0x20; address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; } /* write EEPROM data to Target RAM */ status = ath6kl_upload_board_file(ar); if (status) return status; /* transfer One time Programmable data */ status = ath6kl_upload_otp(ar); if (status) return status; /* Download Target firmware */ status = ath6kl_upload_firmware(ar); if (status) return status; status = ath6kl_upload_patch(ar); if (status) return status; /* Download the test script */ status = ath6kl_upload_testscript(ar); if (status) return status; /* Restore system sleep */ address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, sleep); if (status) return status; address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; param = options | 0x20; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; return status; } int ath6kl_init_hw_params(struct ath6kl *ar) { const struct ath6kl_hw *hw; int i; for (i = 0; i < ARRAY_SIZE(hw_list); i++) { hw = &hw_list[i]; if (hw->id == ar->version.target_ver) break; } if (i == ARRAY_SIZE(hw_list)) { ath6kl_err("Unsupported hardware version: 0x%x\n", ar->version.target_ver); return -EINVAL; } ar->hw = *hw; ath6kl_dbg(ATH6KL_DBG_BOOT, "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n", ar->version.target_ver, ar->target_type, ar->hw.dataset_patch_addr, ar->hw.app_load_addr); ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x", ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr, ar->hw.reserved_ram_size); ath6kl_dbg(ATH6KL_DBG_BOOT, "refclk_hz %d uarttx_pin %d", ar->hw.refclk_hz, ar->hw.uarttx_pin); return 0; } static const char *ath6kl_init_get_hif_name(enum ath6kl_hif_type type) { switch (type) { case ATH6KL_HIF_TYPE_SDIO: return "sdio"; case ATH6KL_HIF_TYPE_USB: return "usb"; } return NULL; } static const struct fw_capa_str_map { int id; const char *name; } fw_capa_map[] = { { ATH6KL_FW_CAPABILITY_HOST_P2P, "host-p2p" }, { ATH6KL_FW_CAPABILITY_SCHED_SCAN, "sched-scan" }, { ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, "sta-p2pdev-duplex" }, { ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, "inactivity-timeout" }, { ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, "rsn-cap-override" }, { ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, "wow-mc-filter" }, { ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, "bmiss-enhance" }, { ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, "sscan-match-list" }, { ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, "rssi-scan-thold" }, { ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, "custom-mac-addr" }, { ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, "tx-err-notify" }, { ATH6KL_FW_CAPABILITY_REGDOMAIN, "regdomain" }, { ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, "sched-scan-v2" }, { ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL, "hb-poll" }, { ATH6KL_FW_CAPABILITY_64BIT_RATES, "64bit-rates" }, { ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS, "ap-inactivity-mins" }, { ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, "map-lp-endpoint" }, { ATH6KL_FW_CAPABILITY_RATETABLE_MCS15, "ratetable-mcs15" }, { ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM, "no-ip-checksum" }, }; static const char *ath6kl_init_get_fw_capa_name(unsigned int id) { int i; for (i = 0; i < ARRAY_SIZE(fw_capa_map); i++) { if (fw_capa_map[i].id == id) return fw_capa_map[i].name; } return "<unknown>"; } static void ath6kl_init_get_fwcaps(struct ath6kl *ar, char *buf, size_t buf_len) { u8 *data = (u8 *) ar->fw_capabilities; size_t trunc_len, len = 0; int i, index, bit; char *trunc = "..."; for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) { index = i / 8; bit = i % 8; if (index >= sizeof(ar->fw_capabilities) * 4) break; if (buf_len - len < 4) { ath6kl_warn("firmware capability buffer too small!\n"); /* add "..." to the end of string */ trunc_len = strlen(trunc) + 1; memcpy(buf + buf_len - trunc_len, trunc, trunc_len); return; } if (data[index] & (1 << bit)) { len += scnprintf(buf + len, buf_len - len, "%s,", ath6kl_init_get_fw_capa_name(i)); } } /* overwrite the last comma */ if (len > 0) len--; buf[len] = '\0'; } static int ath6kl_init_hw_reset(struct ath6kl *ar) { ath6kl_dbg(ATH6KL_DBG_BOOT, "cold resetting the device"); return ath6kl_diag_write32(ar, RESET_CONTROL_ADDRESS, cpu_to_le32(RESET_CONTROL_COLD_RST)); } static int __ath6kl_init_hw_start(struct ath6kl *ar) { long timeleft; int ret, i; char buf[200]; ath6kl_dbg(ATH6KL_DBG_BOOT, "hw start\n"); ret = ath6kl_hif_power_on(ar); if (ret) return ret; ret = ath6kl_configure_target(ar); if (ret) goto err_power_off; ret = ath6kl_init_upload(ar); if (ret) goto err_power_off; /* Do we need to finish the BMI phase */ ret = ath6kl_bmi_done(ar); if (ret) goto err_power_off; /* * The reason we have to wait for the target here is that the * driver layer has to init BMI in order to set the host block * size. */ ret = ath6kl_htc_wait_target(ar->htc_target); if (ret == -ETIMEDOUT) { /* * Most likely USB target is in odd state after reboot and * needs a reset. A cold reset makes the whole device * disappear from USB bus and initialisation starts from * beginning. */ ath6kl_warn("htc wait target timed out, resetting device\n"); ath6kl_init_hw_reset(ar); goto err_power_off; } else if (ret) { ath6kl_err("htc wait target failed: %d\n", ret); goto err_power_off; } ret = ath6kl_init_service_ep(ar); if (ret) { ath6kl_err("Endpoint service initialization failed: %d\n", ret); goto err_cleanup_scatter; } /* setup credit distribution */ ath6kl_htc_credit_setup(ar->htc_target, &ar->credit_state_info); /* start HTC */ ret = ath6kl_htc_start(ar->htc_target); if (ret) { /* FIXME: call this */ ath6kl_cookie_cleanup(ar); goto err_cleanup_scatter; } /* Wait for Wmi event to be ready */ timeleft = wait_event_interruptible_timeout(ar->event_wq, test_bit(WMI_READY, &ar->flag), WMI_TIMEOUT); if (timeleft <= 0) { clear_bit(WMI_READY, &ar->flag); ath6kl_err("wmi is not ready or wait was interrupted: %ld\n", timeleft); ret = -EIO; goto err_htc_stop; } ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n"); if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) { ath6kl_info("%s %s fw %s api %d%s\n", ar->hw.name, ath6kl_init_get_hif_name(ar->hif_type), ar->wiphy->fw_version, ar->fw_api, test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); ath6kl_init_get_fwcaps(ar, buf, sizeof(buf)); ath6kl_info("firmware supports: %s\n", buf); } if (ar->version.abi_ver != ATH6KL_ABI_VERSION) { ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n", ATH6KL_ABI_VERSION, ar->version.abi_ver); ret = -EIO; goto err_htc_stop; } ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__); /* communicate the wmi protocol verision to the target */ /* FIXME: return error */ if ((ath6kl_set_host_app_area(ar)) != 0) ath6kl_err("unable to set the host app area\n"); for (i = 0; i < ar->vif_max; i++) { ret = ath6kl_target_config_wlan_params(ar, i); if (ret) goto err_htc_stop; } return 0; err_htc_stop: ath6kl_htc_stop(ar->htc_target); err_cleanup_scatter: ath6kl_hif_cleanup_scatter(ar); err_power_off: ath6kl_hif_power_off(ar); return ret; } int ath6kl_init_hw_start(struct ath6kl *ar) { int err; err = __ath6kl_init_hw_start(ar); if (err) return err; ar->state = ATH6KL_STATE_ON; return 0; } static int __ath6kl_init_hw_stop(struct ath6kl *ar) { int ret; ath6kl_dbg(ATH6KL_DBG_BOOT, "hw stop\n"); ath6kl_htc_stop(ar->htc_target); ath6kl_hif_stop(ar); ath6kl_bmi_reset(ar); ret = ath6kl_hif_power_off(ar); if (ret) ath6kl_warn("failed to power off hif: %d\n", ret); return 0; } int ath6kl_init_hw_stop(struct ath6kl *ar) { int err; err = __ath6kl_init_hw_stop(ar); if (err) return err; ar->state = ATH6KL_STATE_OFF; return 0; } void ath6kl_init_hw_restart(struct ath6kl *ar) { clear_bit(WMI_READY, &ar->flag); ath6kl_cfg80211_stop_all(ar); if (__ath6kl_init_hw_stop(ar)) { ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to stop during fw error recovery\n"); return; } if (__ath6kl_init_hw_start(ar)) { ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n"); return; } } void ath6kl_stop_txrx(struct ath6kl *ar) { struct ath6kl_vif *vif, *tmp_vif; int i; set_bit(DESTROY_IN_PROGRESS, &ar->flag); if (down_interruptible(&ar->sem)) { ath6kl_err("down_interruptible failed\n"); return; } for (i = 0; i < AP_MAX_NUM_STA; i++) aggr_reset_state(ar->sta_list[i].aggr_conn); spin_lock_bh(&ar->list_lock); list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) { list_del(&vif->list); spin_unlock_bh(&ar->list_lock); ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag)); rtnl_lock(); wiphy_lock(ar->wiphy); ath6kl_cfg80211_vif_cleanup(vif); wiphy_unlock(ar->wiphy); rtnl_unlock(); spin_lock_bh(&ar->list_lock); } spin_unlock_bh(&ar->list_lock); clear_bit(WMI_READY, &ar->flag); if (ar->fw_recovery.enable) timer_delete_sync(&ar->fw_recovery.hb_timer); /* * After wmi_shudown all WMI events will be dropped. We * need to cleanup the buffers allocated in AP mode and * give disconnect notification to stack, which usually * happens in the disconnect_event. Simulate the disconnect * event by calling the function directly. Sometimes * disconnect_event will be received when the debug logs * are collected. */ ath6kl_wmi_shutdown(ar->wmi); clear_bit(WMI_ENABLED, &ar->flag); if (ar->htc_target) { ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); ath6kl_htc_stop(ar->htc_target); } /* * Try to reset the device if we can. The driver may have been * configure NOT to reset the target during a debug session. */ ath6kl_init_hw_reset(ar); up(&ar->sem); } EXPORT_SYMBOL(ath6kl_stop_txrx); |
| 9 9 9 9 9 9 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 | // SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2020 Intel * * Based on drivers/base/devres.c */ #include <drm/drm_managed.h> #include <linux/export.h> #include <linux/list.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <drm/drm_device.h> #include <drm/drm_print.h> #include "drm_internal.h" /** * DOC: managed resources * * Inspired by struct &device managed resources, but tied to the lifetime of * struct &drm_device, which can outlive the underlying physical device, usually * when userspace has some open files and other handles to resources still open. * * Release actions can be added with drmm_add_action(), memory allocations can * be done directly with drmm_kmalloc() and the related functions. Everything * will be released on the final drm_dev_put() in reverse order of how the * release actions have been added and memory has been allocated since driver * loading started with devm_drm_dev_alloc(). * * Note that release actions and managed memory can also be added and removed * during the lifetime of the driver, all the functions are fully concurrent * safe. But it is recommended to use managed resources only for resources that * change rarely, if ever, during the lifetime of the &drm_device instance. */ struct drmres_node { struct list_head entry; drmres_release_t release; const char *name; size_t size; }; struct drmres { struct drmres_node node; /* * Some archs want to perform DMA into kmalloc caches * and need a guaranteed alignment larger than * the alignment of a 64-bit integer. * Thus we use ARCH_DMA_MINALIGN for data[] which will force the same * alignment for struct drmres when allocated by kmalloc(). */ u8 __aligned(ARCH_DMA_MINALIGN) data[]; }; static void free_dr(struct drmres *dr) { kfree_const(dr->node.name); kfree(dr); } void drm_managed_release(struct drm_device *dev) { struct drmres *dr, *tmp; drm_dbg_drmres(dev, "drmres release begin\n"); list_for_each_entry_safe(dr, tmp, &dev->managed.resources, node.entry) { drm_dbg_drmres(dev, "REL %p %s (%zu bytes)\n", dr, dr->node.name, dr->node.size); if (dr->node.release) dr->node.release(dev, dr->node.size ? *(void **)&dr->data : NULL); list_del(&dr->node.entry); free_dr(dr); } drm_dbg_drmres(dev, "drmres release end\n"); } /* * Always inline so that kmalloc_track_caller tracks the actual interesting * caller outside of drm_managed.c. */ static __always_inline struct drmres * alloc_dr(drmres_release_t release, size_t size, gfp_t gfp, int nid) { size_t tot_size; struct drmres *dr; /* We must catch any near-SIZE_MAX cases that could overflow. */ if (unlikely(check_add_overflow(sizeof(*dr), size, &tot_size))) return NULL; dr = kmalloc_node_track_caller(tot_size, gfp, nid); if (unlikely(!dr)) return NULL; memset(dr, 0, offsetof(struct drmres, data)); INIT_LIST_HEAD(&dr->node.entry); dr->node.release = release; dr->node.size = size; return dr; } static void del_dr(struct drm_device *dev, struct drmres *dr) { list_del_init(&dr->node.entry); drm_dbg_drmres(dev, "DEL %p %s (%lu bytes)\n", dr, dr->node.name, (unsigned long) dr->node.size); } static void add_dr(struct drm_device *dev, struct drmres *dr) { unsigned long flags; spin_lock_irqsave(&dev->managed.lock, flags); list_add(&dr->node.entry, &dev->managed.resources); spin_unlock_irqrestore(&dev->managed.lock, flags); drm_dbg_drmres(dev, "ADD %p %s (%lu bytes)\n", dr, dr->node.name, (unsigned long) dr->node.size); } void drmm_add_final_kfree(struct drm_device *dev, void *container) { WARN_ON(dev->managed.final_kfree); WARN_ON(dev < (struct drm_device *) container); WARN_ON(dev + 1 > (struct drm_device *) (container + ksize(container))); dev->managed.final_kfree = container; } int __drmm_add_action(struct drm_device *dev, drmres_release_t action, void *data, const char *name) { struct drmres *dr; void **void_ptr; dr = alloc_dr(action, data ? sizeof(void*) : 0, GFP_KERNEL | __GFP_ZERO, dev_to_node(dev->dev)); if (!dr) { drm_dbg_drmres(dev, "failed to add action %s for %p\n", name, data); return -ENOMEM; } dr->node.name = kstrdup_const(name, GFP_KERNEL); if (data) { void_ptr = (void **)&dr->data; *void_ptr = data; } add_dr(dev, dr); return 0; } EXPORT_SYMBOL(__drmm_add_action); int __drmm_add_action_or_reset(struct drm_device *dev, drmres_release_t action, void *data, const char *name) { int ret; ret = __drmm_add_action(dev, action, data, name); if (ret) action(dev, data); return ret; } EXPORT_SYMBOL(__drmm_add_action_or_reset); /** * drmm_release_action - release a managed action from a &drm_device * @dev: DRM device * @action: function which would be called when @dev is released * @data: opaque pointer, passed to @action * * This function calls the @action previously added by drmm_add_action() * immediately. * The @action is removed from the list of cleanup actions for @dev, * which means that it won't be called in the final drm_dev_put(). */ void drmm_release_action(struct drm_device *dev, drmres_release_t action, void *data) { struct drmres *dr_match = NULL, *dr; unsigned long flags; spin_lock_irqsave(&dev->managed.lock, flags); list_for_each_entry_reverse(dr, &dev->managed.resources, node.entry) { if (dr->node.release == action) { if (!data || *(void **)dr->data == data) { dr_match = dr; del_dr(dev, dr_match); break; } } } spin_unlock_irqrestore(&dev->managed.lock, flags); if (WARN_ON(!dr_match)) return; action(dev, data); free_dr(dr_match); } EXPORT_SYMBOL(drmm_release_action); /** * drmm_kmalloc - &drm_device managed kmalloc() * @dev: DRM device * @size: size of the memory allocation * @gfp: GFP allocation flags * * This is a &drm_device managed version of kmalloc(). The allocated memory is * automatically freed on the final drm_dev_put(). Memory can also be freed * before the final drm_dev_put() by calling drmm_kfree(). */ void *drmm_kmalloc(struct drm_device *dev, size_t size, gfp_t gfp) { struct drmres *dr; dr = alloc_dr(NULL, size, gfp, dev_to_node(dev->dev)); if (!dr) { drm_dbg_drmres(dev, "failed to allocate %zu bytes, %u flags\n", size, gfp); return NULL; } dr->node.name = kstrdup_const("kmalloc", gfp); add_dr(dev, dr); return dr->data; } EXPORT_SYMBOL(drmm_kmalloc); /** * drmm_kstrdup - &drm_device managed kstrdup() * @dev: DRM device * @s: 0-terminated string to be duplicated * @gfp: GFP allocation flags * * This is a &drm_device managed version of kstrdup(). The allocated memory is * automatically freed on the final drm_dev_put() and works exactly like a * memory allocation obtained by drmm_kmalloc(). */ char *drmm_kstrdup(struct drm_device *dev, const char *s, gfp_t gfp) { size_t size; char *buf; if (!s) return NULL; size = strlen(s) + 1; buf = drmm_kmalloc(dev, size, gfp); if (buf) memcpy(buf, s, size); return buf; } EXPORT_SYMBOL_GPL(drmm_kstrdup); /** * drmm_kfree - &drm_device managed kfree() * @dev: DRM device * @data: memory allocation to be freed * * This is a &drm_device managed version of kfree() which can be used to * release memory allocated through drmm_kmalloc() or any of its related * functions before the final drm_dev_put() of @dev. */ void drmm_kfree(struct drm_device *dev, void *data) { struct drmres *dr_match = NULL, *dr; unsigned long flags; if (!data) return; spin_lock_irqsave(&dev->managed.lock, flags); list_for_each_entry(dr, &dev->managed.resources, node.entry) { if (dr->data == data) { dr_match = dr; del_dr(dev, dr_match); break; } } spin_unlock_irqrestore(&dev->managed.lock, flags); if (WARN_ON(!dr_match)) return; free_dr(dr_match); } EXPORT_SYMBOL(drmm_kfree); void __drmm_mutex_release(struct drm_device *dev, void *res) { struct mutex *lock = res; mutex_destroy(lock); } EXPORT_SYMBOL(__drmm_mutex_release); void __drmm_workqueue_release(struct drm_device *device, void *res) { struct workqueue_struct *wq = res; destroy_workqueue(wq); } EXPORT_SYMBOL(__drmm_workqueue_release); |
| 4 4 4 4 4 4 4 10 10 1 1 10 11 11 1 10 11 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Plantronics USB HID Driver * * Copyright (c) 2014 JD Cole <jd.cole@plantronics.com> * Copyright (c) 2015-2018 Terry Junge <terry.junge@plantronics.com> */ #include "hid-ids.h" #include <linux/hid.h> #include <linux/module.h> #include <linux/jiffies.h> #define PLT_HID_1_0_PAGE 0xffa00000 #define PLT_HID_2_0_PAGE 0xffa20000 #define PLT_BASIC_TELEPHONY 0x0003 #define PLT_BASIC_EXCEPTION 0x0005 #define PLT_VOL_UP 0x00b1 #define PLT_VOL_DOWN 0x00b2 #define PLT_MIC_MUTE 0x00b5 #define PLT1_VOL_UP (PLT_HID_1_0_PAGE | PLT_VOL_UP) #define PLT1_VOL_DOWN (PLT_HID_1_0_PAGE | PLT_VOL_DOWN) #define PLT1_MIC_MUTE (PLT_HID_1_0_PAGE | PLT_MIC_MUTE) #define PLT2_VOL_UP (PLT_HID_2_0_PAGE | PLT_VOL_UP) #define PLT2_VOL_DOWN (PLT_HID_2_0_PAGE | PLT_VOL_DOWN) #define PLT2_MIC_MUTE (PLT_HID_2_0_PAGE | PLT_MIC_MUTE) #define HID_TELEPHONY_MUTE (HID_UP_TELEPHONY | 0x2f) #define HID_CONSUMER_MUTE (HID_UP_CONSUMER | 0xe2) #define PLT_DA60 0xda60 #define PLT_BT300_MIN 0x0413 #define PLT_BT300_MAX 0x0418 #define PLT_DOUBLE_KEY_TIMEOUT 5 /* ms */ struct plt_drv_data { unsigned long device_type; unsigned long last_key_ts; unsigned long double_key_to; __u16 last_key; }; static int plantronics_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { unsigned short mapped_key; struct plt_drv_data *drv_data = hid_get_drvdata(hdev); unsigned long plt_type = drv_data->device_type; int allow_mute = usage->hid == HID_TELEPHONY_MUTE; int allow_consumer = field->application == HID_CP_CONSUMERCONTROL && (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER && usage->hid != HID_CONSUMER_MUTE; /* special case for PTT products */ if (field->application == HID_GD_JOYSTICK) goto defaulted; /* non-standard types or multi-HID interfaces - plt_type is PID */ if (!(plt_type & HID_USAGE_PAGE)) { switch (plt_type) { case PLT_DA60: if (allow_consumer) goto defaulted; if (usage->hid == HID_CONSUMER_MUTE) { mapped_key = KEY_MICMUTE; goto mapped; } break; default: if (allow_consumer || allow_mute) goto defaulted; } goto ignored; } /* handle standard consumer control mapping */ /* and standard telephony mic mute mapping */ if (allow_consumer || allow_mute) goto defaulted; /* handle vendor unique types - plt_type is 0xffa0uuuu or 0xffa2uuuu */ /* if not 'basic telephony compliant' - map vendor unique controls */ if (!((plt_type & HID_USAGE) >= PLT_BASIC_TELEPHONY && (plt_type & HID_USAGE) != PLT_BASIC_EXCEPTION) && !((field->application ^ plt_type) & HID_USAGE_PAGE)) switch (usage->hid) { case PLT1_VOL_UP: case PLT2_VOL_UP: mapped_key = KEY_VOLUMEUP; goto mapped; case PLT1_VOL_DOWN: case PLT2_VOL_DOWN: mapped_key = KEY_VOLUMEDOWN; goto mapped; case PLT1_MIC_MUTE: case PLT2_MIC_MUTE: mapped_key = KEY_MICMUTE; goto mapped; } /* * Future mapping of call control or other usages, * if and when keys are defined would go here * otherwise, ignore everything else that was not mapped */ ignored: hid_dbg(hdev, "usage: %08x (appl: %08x) - ignored\n", usage->hid, field->application); return -1; defaulted: hid_dbg(hdev, "usage: %08x (appl: %08x) - defaulted\n", usage->hid, field->application); return 0; mapped: hid_map_usage_clear(hi, usage, bit, max, EV_KEY, mapped_key); hid_dbg(hdev, "usage: %08x (appl: %08x) - mapped to key %d\n", usage->hid, field->application, mapped_key); return 1; } static int plantronics_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { struct plt_drv_data *drv_data = hid_get_drvdata(hdev); unsigned long prev_tsto, cur_ts; __u16 prev_key, cur_key; /* Usages are filtered in plantronics_usages. */ /* HZ too low for ms resolution - double key detection disabled */ /* or it is a key release - handle key presses only. */ if (!drv_data->double_key_to || !value) return 0; prev_tsto = drv_data->last_key_ts + drv_data->double_key_to; cur_ts = drv_data->last_key_ts = jiffies; prev_key = drv_data->last_key; cur_key = drv_data->last_key = usage->code; /* If the same key occurs in <= double_key_to -- ignore it */ if (prev_key == cur_key && time_before_eq(cur_ts, prev_tsto)) { hid_dbg(hdev, "double key %d ignored\n", cur_key); return 1; /* Ignore the repeated key. */ } return 0; } static unsigned long plantronics_device_type(struct hid_device *hdev) { unsigned i, col_page; unsigned long plt_type = hdev->product; /* multi-HID interfaces? - plt_type is PID */ if (plt_type >= PLT_BT300_MIN && plt_type <= PLT_BT300_MAX) goto exit; /* determine primary vendor page */ for (i = 0; i < hdev->maxcollection; i++) { col_page = hdev->collection[i].usage & HID_USAGE_PAGE; if (col_page == PLT_HID_2_0_PAGE) { plt_type = hdev->collection[i].usage; break; } if (col_page == PLT_HID_1_0_PAGE) plt_type = hdev->collection[i].usage; } exit: hid_dbg(hdev, "plt_type decoded as: %08lx\n", plt_type); return plt_type; } static int plantronics_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct plt_drv_data *drv_data; int ret; drv_data = devm_kzalloc(&hdev->dev, sizeof(*drv_data), GFP_KERNEL); if (!drv_data) return -ENOMEM; ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); return ret; } drv_data->device_type = plantronics_device_type(hdev); drv_data->double_key_to = msecs_to_jiffies(PLT_DOUBLE_KEY_TIMEOUT); drv_data->last_key_ts = jiffies - drv_data->double_key_to; /* if HZ does not allow ms resolution - disable double key detection */ if (drv_data->double_key_to < PLT_DOUBLE_KEY_TIMEOUT) drv_data->double_key_to = 0; hid_set_drvdata(hdev, drv_data); ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | HID_CONNECT_HIDINPUT_FORCE | HID_CONNECT_HIDDEV_FORCE); if (ret) hid_err(hdev, "hw start failed\n"); return ret; } static const struct hid_device_id plantronics_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) }, { } }; MODULE_DEVICE_TABLE(hid, plantronics_devices); static const struct hid_usage_id plantronics_usages[] = { { HID_CP_VOLUMEUP, EV_KEY, HID_ANY_ID }, { HID_CP_VOLUMEDOWN, EV_KEY, HID_ANY_ID }, { HID_TELEPHONY_MUTE, EV_KEY, HID_ANY_ID }, { HID_CONSUMER_MUTE, EV_KEY, HID_ANY_ID }, { PLT2_VOL_UP, EV_KEY, HID_ANY_ID }, { PLT2_VOL_DOWN, EV_KEY, HID_ANY_ID }, { PLT2_MIC_MUTE, EV_KEY, HID_ANY_ID }, { PLT1_VOL_UP, EV_KEY, HID_ANY_ID }, { PLT1_VOL_DOWN, EV_KEY, HID_ANY_ID }, { PLT1_MIC_MUTE, EV_KEY, HID_ANY_ID }, { HID_TERMINATOR, HID_TERMINATOR, HID_TERMINATOR } }; static struct hid_driver plantronics_driver = { .name = "plantronics", .id_table = plantronics_devices, .usage_table = plantronics_usages, .input_mapping = plantronics_input_mapping, .event = plantronics_event, .probe = plantronics_probe, }; module_hid_driver(plantronics_driver); MODULE_AUTHOR("JD Cole <jd.cole@plantronics.com>"); MODULE_AUTHOR("Terry Junge <terry.junge@plantronics.com>"); MODULE_DESCRIPTION("Plantronics USB HID Driver"); MODULE_LICENSE("GPL"); |
| 3218 3204 3215 3211 3210 3216 3208 3208 3218 1486 1486 142 1485 3195 3193 3193 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | // SPDX-License-Identifier: GPL-2.0 /* * fs/sysfs/symlink.c - sysfs symlink implementation * * Copyright (c) 2001-3 Patrick Mochel * Copyright (c) 2007 SUSE Linux Products GmbH * Copyright (c) 2007 Tejun Heo <teheo@suse.de> * * Please see Documentation/filesystems/sysfs.rst for more information. */ #include <linux/fs.h> #include <linux/module.h> #include <linux/kobject.h> #include <linux/mutex.h> #include <linux/security.h> #include "sysfs.h" static int sysfs_do_create_link_sd(struct kernfs_node *parent, struct kobject *target_kobj, const char *name, int warn) { struct kernfs_node *kn, *target = NULL; if (WARN_ON(!name || !parent)) return -EINVAL; /* * We don't own @target_kobj and it may be removed at any time. * Synchronize using sysfs_symlink_target_lock. See * sysfs_remove_dir() for details. */ spin_lock(&sysfs_symlink_target_lock); if (target_kobj->sd) { target = target_kobj->sd; kernfs_get(target); } spin_unlock(&sysfs_symlink_target_lock); if (!target) return -ENOENT; kn = kernfs_create_link(parent, name, target); kernfs_put(target); if (!IS_ERR(kn)) return 0; if (warn && PTR_ERR(kn) == -EEXIST) sysfs_warn_dup(parent, name); return PTR_ERR(kn); } /** * sysfs_create_link_sd - create symlink to a given object. * @kn: directory we're creating the link in. * @target: object we're pointing to. * @name: name of the symlink. */ int sysfs_create_link_sd(struct kernfs_node *kn, struct kobject *target, const char *name) { return sysfs_do_create_link_sd(kn, target, name, 1); } static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target, const char *name, int warn) { struct kernfs_node *parent = NULL; if (!kobj) parent = sysfs_root_kn; else parent = kobj->sd; if (!parent) return -EFAULT; return sysfs_do_create_link_sd(parent, target, name, warn); } /** * sysfs_create_link - create symlink between two objects. * @kobj: object whose directory we're creating the link in. * @target: object we're pointing to. * @name: name of the symlink. */ int sysfs_create_link(struct kobject *kobj, struct kobject *target, const char *name) { return sysfs_do_create_link(kobj, target, name, 1); } EXPORT_SYMBOL_GPL(sysfs_create_link); /** * sysfs_create_link_nowarn - create symlink between two objects. * @kobj: object whose directory we're creating the link in. * @target: object we're pointing to. * @name: name of the symlink. * * This function does the same as sysfs_create_link(), but it * doesn't warn if the link already exists. */ int sysfs_create_link_nowarn(struct kobject *kobj, struct kobject *target, const char *name) { return sysfs_do_create_link(kobj, target, name, 0); } EXPORT_SYMBOL_GPL(sysfs_create_link_nowarn); /** * sysfs_delete_link - remove symlink in object's directory. * @kobj: object we're acting for. * @targ: object we're pointing to. * @name: name of the symlink to remove. * * Unlike sysfs_remove_link sysfs_delete_link has enough information * to successfully delete symlinks in tagged directories. */ void sysfs_delete_link(struct kobject *kobj, struct kobject *targ, const char *name) { const void *ns = NULL; /* * We don't own @target and it may be removed at any time. * Synchronize using sysfs_symlink_target_lock. See * sysfs_remove_dir() for details. */ spin_lock(&sysfs_symlink_target_lock); if (targ->sd && kernfs_ns_enabled(kobj->sd)) ns = targ->sd->ns; spin_unlock(&sysfs_symlink_target_lock); kernfs_remove_by_name_ns(kobj->sd, name, ns); } /** * sysfs_remove_link - remove symlink in object's directory. * @kobj: object we're acting for. * @name: name of the symlink to remove. */ void sysfs_remove_link(struct kobject *kobj, const char *name) { struct kernfs_node *parent = NULL; if (!kobj) parent = sysfs_root_kn; else parent = kobj->sd; kernfs_remove_by_name(parent, name); } EXPORT_SYMBOL_GPL(sysfs_remove_link); /** * sysfs_rename_link_ns - rename symlink in object's directory. * @kobj: object we're acting for. * @targ: object we're pointing to. * @old: previous name of the symlink. * @new: new name of the symlink. * @new_ns: new namespace of the symlink. * * A helper function for the common rename symlink idiom. */ int sysfs_rename_link_ns(struct kobject *kobj, struct kobject *targ, const char *old, const char *new, const void *new_ns) { struct kernfs_node *parent, *kn = NULL; const void *old_ns = NULL; int result; if (!kobj) parent = sysfs_root_kn; else parent = kobj->sd; if (targ->sd) old_ns = targ->sd->ns; result = -ENOENT; kn = kernfs_find_and_get_ns(parent, old, old_ns); if (!kn) goto out; result = -EINVAL; if (kernfs_type(kn) != KERNFS_LINK) goto out; if (kn->symlink.target_kn->priv != targ) goto out; result = kernfs_rename_ns(kn, parent, new, new_ns); out: kernfs_put(kn); return result; } EXPORT_SYMBOL_GPL(sysfs_rename_link_ns); |
| 29 29 3229 37 37 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 | // SPDX-License-Identifier: GPL-2.0 #include <linux/kernel.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_address.h> #include <linux/of_iommu.h> #include <linux/of_reserved_mem.h> #include <linux/dma-direct.h> /* for bus_dma_region */ #include <linux/dma-map-ops.h> #include <linux/init.h> #include <linux/mod_devicetable.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <asm/errno.h> #include "of_private.h" /** * of_match_device - Tell if a struct device matches an of_device_id list * @matches: array of of_device_id match structures to search in * @dev: the OF device structure to match against * * Used by a driver to check whether an platform_device present in the * system is in its list of supported devices. */ const struct of_device_id *of_match_device(const struct of_device_id *matches, const struct device *dev) { if (!matches || !dev->of_node || dev->of_node_reused) return NULL; return of_match_node(matches, dev->of_node); } EXPORT_SYMBOL(of_match_device); static void of_dma_set_restricted_buffer(struct device *dev, struct device_node *np) { struct device_node *of_node = dev->of_node; struct of_phandle_iterator it; int rc, i = 0; if (!IS_ENABLED(CONFIG_DMA_RESTRICTED_POOL)) return; /* * If dev->of_node doesn't exist or doesn't contain memory-region, try * the OF node having DMA configuration. */ if (!of_property_present(of_node, "memory-region")) of_node = np; of_for_each_phandle(&it, rc, of_node, "memory-region", NULL, 0) { /* * There might be multiple memory regions, but only one * restricted-dma-pool region is allowed. */ if (of_device_is_compatible(it.node, "restricted-dma-pool") && of_device_is_available(it.node)) { if (of_reserved_mem_device_init_by_idx(dev, of_node, i)) dev_warn(dev, "failed to initialise \"restricted-dma-pool\" memory node\n"); of_node_put(it.node); break; } i++; } } /** * of_dma_configure_id - Setup DMA configuration * @dev: Device to apply DMA configuration * @np: Pointer to OF node having DMA configuration * @force_dma: Whether device is to be set up by of_dma_configure() even if * DMA capability is not explicitly described by firmware. * @id: Optional const pointer value input id * * Try to get devices's DMA configuration from DT and update it * accordingly. * * If platform code needs to use its own special DMA configuration, it * can use a platform bus notifier and handle BUS_NOTIFY_ADD_DEVICE events * to fix up DMA configuration. */ int of_dma_configure_id(struct device *dev, struct device_node *np, bool force_dma, const u32 *id) { const struct bus_dma_region *map = NULL; struct device_node *bus_np; u64 mask, end = 0; bool coherent, set_map = false; int ret; if (dev->dma_range_map) { dev_dbg(dev, "dma_range_map already set\n"); goto skip_map; } if (np == dev->of_node) bus_np = __of_get_dma_parent(np); else bus_np = of_node_get(np); ret = of_dma_get_range(bus_np, &map); of_node_put(bus_np); if (ret < 0) { /* * For legacy reasons, we have to assume some devices need * DMA configuration regardless of whether "dma-ranges" is * correctly specified or not. */ if (!force_dma) return ret == -ENODEV ? 0 : ret; } else { /* Determine the overall bounds of all DMA regions */ end = dma_range_map_max(map); set_map = true; } skip_map: /* * If @dev is expected to be DMA-capable then the bus code that created * it should have initialised its dma_mask pointer by this point. For * now, we'll continue the legacy behaviour of coercing it to the * coherent mask if not, but we'll no longer do so quietly. */ if (!dev->dma_mask) { dev_warn(dev, "DMA mask not set\n"); dev->dma_mask = &dev->coherent_dma_mask; } if (!end && dev->coherent_dma_mask) end = dev->coherent_dma_mask; else if (!end) end = (1ULL << 32) - 1; /* * Limit coherent and dma mask based on size and default mask * set by the driver. */ mask = DMA_BIT_MASK(ilog2(end) + 1); dev->coherent_dma_mask &= mask; *dev->dma_mask &= mask; /* ...but only set bus limit and range map if we found valid dma-ranges earlier */ if (set_map) { dev->bus_dma_limit = end; dev->dma_range_map = map; } coherent = of_dma_is_coherent(np); dev_dbg(dev, "device is%sdma coherent\n", coherent ? " " : " not "); ret = of_iommu_configure(dev, np, id); if (ret == -EPROBE_DEFER) { /* Don't touch range map if it wasn't set from a valid dma-ranges */ if (set_map) dev->dma_range_map = NULL; kfree(map); return -EPROBE_DEFER; } /* Take all other IOMMU errors to mean we'll just carry on without it */ dev_dbg(dev, "device is%sbehind an iommu\n", !ret ? " " : " not "); arch_setup_dma_ops(dev, coherent); if (ret) of_dma_set_restricted_buffer(dev, np); return 0; } EXPORT_SYMBOL_GPL(of_dma_configure_id); const void *of_device_get_match_data(const struct device *dev) { const struct of_device_id *match; match = of_match_device(dev->driver->of_match_table, dev); if (!match) return NULL; return match->data; } EXPORT_SYMBOL(of_device_get_match_data); /** * of_device_modalias - Fill buffer with newline terminated modalias string * @dev: Calling device * @str: Modalias string * @len: Size of @str */ ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len) { ssize_t sl; if (!dev || !dev->of_node || dev->of_node_reused) return -ENODEV; sl = of_modalias(dev->of_node, str, len - 2); if (sl < 0) return sl; if (sl > len - 2) return -ENOMEM; str[sl++] = '\n'; str[sl] = 0; return sl; } EXPORT_SYMBOL_GPL(of_device_modalias); /** * of_device_uevent - Display OF related uevent information * @dev: Device to display the uevent information for * @env: Kernel object's userspace event reference to fill up */ void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env) { const char *compat, *type; struct alias_prop *app; struct property *p; int seen = 0; if ((!dev) || (!dev->of_node)) return; add_uevent_var(env, "OF_NAME=%pOFn", dev->of_node); add_uevent_var(env, "OF_FULLNAME=%pOF", dev->of_node); type = of_node_get_device_type(dev->of_node); if (type) add_uevent_var(env, "OF_TYPE=%s", type); /* Since the compatible field can contain pretty much anything * it's not really legal to split it out with commas. We split it * up using a number of environment variables instead. */ of_property_for_each_string(dev->of_node, "compatible", p, compat) { add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat); seen++; } add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen); seen = 0; mutex_lock(&of_mutex); list_for_each_entry(app, &aliases_lookup, link) { if (dev->of_node == app->np) { add_uevent_var(env, "OF_ALIAS_%d=%s", seen, app->alias); seen++; } } mutex_unlock(&of_mutex); } EXPORT_SYMBOL_GPL(of_device_uevent); int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env) { int sl; if ((!dev) || (!dev->of_node) || dev->of_node_reused) return -ENODEV; /* Devicetree modalias is tricky, we add it in 2 steps */ if (add_uevent_var(env, "MODALIAS=")) return -ENOMEM; sl = of_modalias(dev->of_node, &env->buf[env->buflen-1], sizeof(env->buf) - env->buflen); if (sl < 0) return sl; if (sl >= (sizeof(env->buf) - env->buflen)) return -ENOMEM; env->buflen += sl; return 0; } EXPORT_SYMBOL_GPL(of_device_uevent_modalias); /** * of_device_make_bus_id - Use the device node data to assign a unique name * @dev: pointer to device structure that is linked to a device tree node * * This routine will first try using the translated bus address to * derive a unique name. If it cannot, then it will prepend names from * parent nodes until a unique name can be derived. */ void of_device_make_bus_id(struct device *dev) { struct device_node *node = dev->of_node; const __be32 *reg; u64 addr; u32 mask; /* Construct the name, using parent nodes if necessary to ensure uniqueness */ while (node->parent) { /* * If the address can be translated, then that is as much * uniqueness as we need. Make it the first component and return */ reg = of_get_property(node, "reg", NULL); if (reg && (addr = of_translate_address(node, reg)) != OF_BAD_ADDR) { if (!of_property_read_u32(node, "mask", &mask)) dev_set_name(dev, dev_name(dev) ? "%llx.%x.%pOFn:%s" : "%llx.%x.%pOFn", addr, ffs(mask) - 1, node, dev_name(dev)); else dev_set_name(dev, dev_name(dev) ? "%llx.%pOFn:%s" : "%llx.%pOFn", addr, node, dev_name(dev)); return; } /* format arguments only used if dev_name() resolves to NULL */ dev_set_name(dev, dev_name(dev) ? "%s:%s" : "%s", kbasename(node->full_name), dev_name(dev)); node = node->parent; } } EXPORT_SYMBOL_GPL(of_device_make_bus_id); |
| 3260 3257 3227 3229 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | // SPDX-License-Identifier: GPL-2.0 /* * kobject.h - generic kernel object infrastructure. * * Copyright (c) 2002-2003 Patrick Mochel * Copyright (c) 2002-2003 Open Source Development Labs * Copyright (c) 2006-2008 Greg Kroah-Hartman <greg@kroah.com> * Copyright (c) 2006-2008 Novell Inc. * * Please read Documentation/core-api/kobject.rst before using the kobject * interface, ESPECIALLY the parts about reference counts and object * destructors. */ #ifndef _KOBJECT_H_ #define _KOBJECT_H_ #include <linux/types.h> #include <linux/list.h> #include <linux/sysfs.h> #include <linux/compiler.h> #include <linux/container_of.h> #include <linux/spinlock.h> #include <linux/kref.h> #include <linux/kobject_ns.h> #include <linux/wait.h> #include <linux/atomic.h> #include <linux/workqueue.h> #include <linux/uidgid.h> #define UEVENT_HELPER_PATH_LEN 256 #define UEVENT_NUM_ENVP 64 /* number of env pointers */ #define UEVENT_BUFFER_SIZE 2048 /* buffer for the variables */ #ifdef CONFIG_UEVENT_HELPER /* path to the userspace helper executed on an event */ extern char uevent_helper[]; #endif /* counter to tag the uevent, read only except for the kobject core */ extern atomic64_t uevent_seqnum; /* * The actions here must match the index to the string array * in lib/kobject_uevent.c * * Do not add new actions here without checking with the driver-core * maintainers. Action strings are not meant to express subsystem * or device specific properties. In most cases you want to send a * kobject_uevent_env(kobj, KOBJ_CHANGE, env) with additional event * specific variables added to the event environment. */ enum kobject_action { KOBJ_ADD, KOBJ_REMOVE, KOBJ_CHANGE, KOBJ_MOVE, KOBJ_ONLINE, KOBJ_OFFLINE, KOBJ_BIND, KOBJ_UNBIND, }; struct kobject { const char *name; struct list_head entry; struct kobject *parent; struct kset *kset; const struct kobj_type *ktype; struct kernfs_node *sd; /* sysfs directory entry */ struct kref kref; unsigned int state_initialized:1; unsigned int state_in_sysfs:1; unsigned int state_add_uevent_sent:1; unsigned int state_remove_uevent_sent:1; unsigned int uevent_suppress:1; #ifdef CONFIG_DEBUG_KOBJECT_RELEASE struct delayed_work release; #endif }; __printf(2, 3) int kobject_set_name(struct kobject *kobj, const char *name, ...); __printf(2, 0) int kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list vargs); static inline const char *kobject_name(const struct kobject *kobj) { return kobj->name; } void kobject_init(struct kobject *kobj, const struct kobj_type *ktype); __printf(3, 4) __must_check int kobject_add(struct kobject *kobj, struct kobject *parent, const char *fmt, ...); __printf(4, 5) __must_check int kobject_init_and_add(struct kobject *kobj, const struct kobj_type *ktype, struct kobject *parent, const char *fmt, ...); void kobject_del(struct kobject *kobj); struct kobject * __must_check kobject_create_and_add(const char *name, struct kobject *parent); int __must_check kobject_rename(struct kobject *, const char *new_name); int __must_check kobject_move(struct kobject *, struct kobject *); struct kobject *kobject_get(struct kobject *kobj); struct kobject * __must_check kobject_get_unless_zero(struct kobject *kobj); void kobject_put(struct kobject *kobj); const void *kobject_namespace(const struct kobject *kobj); void kobject_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t *gid); char *kobject_get_path(const struct kobject *kobj, gfp_t flag); struct kobj_type { void (*release)(struct kobject *kobj); const struct sysfs_ops *sysfs_ops; const struct attribute_group **default_groups; const struct kobj_ns_type_operations *(*child_ns_type)(const struct kobject *kobj); const void *(*namespace)(const struct kobject *kobj); void (*get_ownership)(const struct kobject *kobj, kuid_t *uid, kgid_t *gid); }; struct kobj_uevent_env { char *argv[3]; char *envp[UEVENT_NUM_ENVP]; int envp_idx; char buf[UEVENT_BUFFER_SIZE]; int buflen; }; struct kset_uevent_ops { int (* const filter)(const struct kobject *kobj); const char *(* const name)(const struct kobject *kobj); int (* const uevent)(const struct kobject *kobj, struct kobj_uevent_env *env); }; struct kobj_attribute { struct attribute attr; ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, char *buf); ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count); }; extern const struct sysfs_ops kobj_sysfs_ops; struct sock; /** * struct kset - a set of kobjects of a specific type, belonging to a specific subsystem. * * A kset defines a group of kobjects. They can be individually * different "types" but overall these kobjects all want to be grouped * together and operated on in the same manner. ksets are used to * define the attribute callbacks and other common events that happen to * a kobject. * * @list: the list of all kobjects for this kset * @list_lock: a lock for iterating over the kobjects * @kobj: the embedded kobject for this kset (recursion, isn't it fun...) * @uevent_ops: the set of uevent operations for this kset. These are * called whenever a kobject has something happen to it so that the kset * can add new environment variables, or filter out the uevents if so * desired. */ struct kset { struct list_head list; spinlock_t list_lock; struct kobject kobj; const struct kset_uevent_ops *uevent_ops; } __randomize_layout; void kset_init(struct kset *kset); int __must_check kset_register(struct kset *kset); void kset_unregister(struct kset *kset); struct kset * __must_check kset_create_and_add(const char *name, const struct kset_uevent_ops *u, struct kobject *parent_kobj); static inline struct kset *to_kset(struct kobject *kobj) { return kobj ? container_of(kobj, struct kset, kobj) : NULL; } static inline struct kset *kset_get(struct kset *k) { return k ? to_kset(kobject_get(&k->kobj)) : NULL; } static inline void kset_put(struct kset *k) { kobject_put(&k->kobj); } static inline const struct kobj_type *get_ktype(const struct kobject *kobj) { return kobj->ktype; } struct kobject *kset_find_obj(struct kset *, const char *); /* The global /sys/kernel/ kobject for people to chain off of */ extern struct kobject *kernel_kobj; /* The global /sys/kernel/mm/ kobject for people to chain off of */ extern struct kobject *mm_kobj; /* The global /sys/hypervisor/ kobject for people to chain off of */ extern struct kobject *hypervisor_kobj; /* The global /sys/power/ kobject for people to chain off of */ extern struct kobject *power_kobj; /* The global /sys/firmware/ kobject for people to chain off of */ extern struct kobject *firmware_kobj; int kobject_uevent(struct kobject *kobj, enum kobject_action action); int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]); int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count); __printf(2, 3) int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...); #endif /* _KOBJECT_H_ */ |
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2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __NET_NETLINK_H #define __NET_NETLINK_H #include <linux/types.h> #include <linux/netlink.h> #include <linux/jiffies.h> #include <linux/in6.h> /* ======================================================================== * Netlink Messages and Attributes Interface (As Seen On TV) * ------------------------------------------------------------------------ * Messages Interface * ------------------------------------------------------------------------ * * Message Format: * <--- nlmsg_total_size(payload) ---> * <-- nlmsg_msg_size(payload) -> * +----------+- - -+-------------+- - -+-------- - - * | nlmsghdr | Pad | Payload | Pad | nlmsghdr * +----------+- - -+-------------+- - -+-------- - - * nlmsg_data(nlh)---^ ^ * nlmsg_next(nlh)-----------------------+ * * Payload Format: * <---------------------- nlmsg_len(nlh) ---------------------> * <------ hdrlen ------> <- nlmsg_attrlen(nlh, hdrlen) -> * +----------------------+- - -+--------------------------------+ * | Family Header | Pad | Attributes | * +----------------------+- - -+--------------------------------+ * nlmsg_attrdata(nlh, hdrlen)---^ * * Data Structures: * struct nlmsghdr netlink message header * * Message Construction: * nlmsg_new() create a new netlink message * nlmsg_put() add a netlink message to an skb * nlmsg_put_answer() callback based nlmsg_put() * nlmsg_end() finalize netlink message * nlmsg_get_pos() return current position in message * nlmsg_trim() trim part of message * nlmsg_cancel() cancel message construction * nlmsg_consume() free a netlink message (expected) * nlmsg_free() free a netlink message (drop) * * Message Sending: * nlmsg_multicast() multicast message to several groups * nlmsg_unicast() unicast a message to a single socket * nlmsg_notify() send notification message * * Message Length Calculations: * nlmsg_msg_size(payload) length of message w/o padding * nlmsg_total_size(payload) length of message w/ padding * nlmsg_padlen(payload) length of padding at tail * * Message Payload Access: * nlmsg_data(nlh) head of message payload * nlmsg_len(nlh) length of message payload * nlmsg_attrdata(nlh, hdrlen) head of attributes data * nlmsg_attrlen(nlh, hdrlen) length of attributes data * * Message Parsing: * nlmsg_ok(nlh, remaining) does nlh fit into remaining bytes? * nlmsg_next(nlh, remaining) get next netlink message * nlmsg_parse() parse attributes of a message * nlmsg_find_attr() find an attribute in a message * nlmsg_for_each_msg() loop over all messages * nlmsg_validate() validate netlink message incl. attrs * nlmsg_for_each_attr() loop over all attributes * nlmsg_for_each_attr_type() loop over all attributes with the * given type * * Misc: * nlmsg_report() report back to application? * * ------------------------------------------------------------------------ * Attributes Interface * ------------------------------------------------------------------------ * * Attribute Format: * <------- nla_total_size(payload) -------> * <---- nla_attr_size(payload) -----> * +----------+- - -+- - - - - - - - - +- - -+-------- - - * | Header | Pad | Payload | Pad | Header * +----------+- - -+- - - - - - - - - +- - -+-------- - - * <- nla_len(nla) -> ^ * nla_data(nla)----^ | * nla_next(nla)-----------------------------' * * Data Structures: * struct nlattr netlink attribute header * * Attribute Construction: * nla_reserve(skb, type, len) reserve room for an attribute * nla_reserve_nohdr(skb, len) reserve room for an attribute w/o hdr * nla_put(skb, type, len, data) add attribute to skb * nla_put_nohdr(skb, len, data) add attribute w/o hdr * nla_append(skb, len, data) append data to skb * * Attribute Construction for Basic Types: * nla_put_u8(skb, type, value) add u8 attribute to skb * nla_put_u16(skb, type, value) add u16 attribute to skb * nla_put_u32(skb, type, value) add u32 attribute to skb * nla_put_u64_64bit(skb, type, * value, padattr) add u64 attribute to skb * nla_put_s8(skb, type, value) add s8 attribute to skb * nla_put_s16(skb, type, value) add s16 attribute to skb * nla_put_s32(skb, type, value) add s32 attribute to skb * nla_put_s64(skb, type, value, * padattr) add s64 attribute to skb * nla_put_string(skb, type, str) add string attribute to skb * nla_put_flag(skb, type) add flag attribute to skb * nla_put_msecs(skb, type, jiffies, * padattr) add msecs attribute to skb * nla_put_in_addr(skb, type, addr) add IPv4 address attribute to skb * nla_put_in6_addr(skb, type, addr) add IPv6 address attribute to skb * * Nested Attributes Construction: * nla_nest_start(skb, type) start a nested attribute * nla_nest_end(skb, nla) finalize a nested attribute * nla_nest_cancel(skb, nla) cancel nested attribute construction * nla_put_empty_nest(skb, type) create an empty nest * * Attribute Length Calculations: * nla_attr_size(payload) length of attribute w/o padding * nla_total_size(payload) length of attribute w/ padding * nla_padlen(payload) length of padding * * Attribute Payload Access: * nla_data(nla) head of attribute payload * nla_len(nla) length of attribute payload * * Attribute Payload Access for Basic Types: * nla_get_uint(nla) get payload for a uint attribute * nla_get_sint(nla) get payload for a sint attribute * nla_get_u8(nla) get payload for a u8 attribute * nla_get_u16(nla) get payload for a u16 attribute * nla_get_u32(nla) get payload for a u32 attribute * nla_get_u64(nla) get payload for a u64 attribute * nla_get_s8(nla) get payload for a s8 attribute * nla_get_s16(nla) get payload for a s16 attribute * nla_get_s32(nla) get payload for a s32 attribute * nla_get_s64(nla) get payload for a s64 attribute * nla_get_flag(nla) return 1 if flag is true * nla_get_msecs(nla) get payload for a msecs attribute * * The same functions also exist with _default(). * * Attribute Misc: * nla_memcpy(dest, nla, count) copy attribute into memory * nla_memcmp(nla, data, size) compare attribute with memory area * nla_strscpy(dst, nla, size) copy attribute to a sized string * nla_strcmp(nla, str) compare attribute with string * * Attribute Parsing: * nla_ok(nla, remaining) does nla fit into remaining bytes? * nla_next(nla, remaining) get next netlink attribute * nla_validate() validate a stream of attributes * nla_validate_nested() validate a stream of nested attributes * nla_find() find attribute in stream of attributes * nla_find_nested() find attribute in nested attributes * nla_parse() parse and validate stream of attrs * nla_parse_nested() parse nested attributes * nla_for_each_attr() loop over all attributes * nla_for_each_attr_type() loop over all attributes with the * given type * nla_for_each_nested() loop over the nested attributes * nla_for_each_nested_type() loop over the nested attributes with * the given type *========================================================================= */ /** * Standard attribute types to specify validation policy */ enum { NLA_UNSPEC, NLA_U8, NLA_U16, NLA_U32, NLA_U64, NLA_STRING, NLA_FLAG, NLA_MSECS, NLA_NESTED, NLA_NESTED_ARRAY, NLA_NUL_STRING, NLA_BINARY, NLA_S8, NLA_S16, NLA_S32, NLA_S64, NLA_BITFIELD32, NLA_REJECT, NLA_BE16, NLA_BE32, NLA_SINT, NLA_UINT, __NLA_TYPE_MAX, }; #define NLA_TYPE_MAX (__NLA_TYPE_MAX - 1) struct netlink_range_validation { u64 min, max; }; struct netlink_range_validation_signed { s64 min, max; }; enum nla_policy_validation { NLA_VALIDATE_NONE, NLA_VALIDATE_RANGE, NLA_VALIDATE_RANGE_WARN_TOO_LONG, NLA_VALIDATE_MIN, NLA_VALIDATE_MAX, NLA_VALIDATE_MASK, NLA_VALIDATE_RANGE_PTR, NLA_VALIDATE_FUNCTION, }; /** * struct nla_policy - attribute validation policy * @type: Type of attribute or NLA_UNSPEC * @validation_type: type of attribute validation done in addition to * type-specific validation (e.g. range, function call), see * &enum nla_policy_validation * @len: Type specific length of payload * * Policies are defined as arrays of this struct, the array must be * accessible by attribute type up to the highest identifier to be expected. * * Meaning of `len' field: * NLA_STRING Maximum length of string * NLA_NUL_STRING Maximum length of string (excluding NUL) * NLA_FLAG Unused * NLA_BINARY Maximum length of attribute payload * (but see also below with the validation type) * NLA_NESTED, * NLA_NESTED_ARRAY Length verification is done by checking len of * nested header (or empty); len field is used if * nested_policy is also used, for the max attr * number in the nested policy. * NLA_SINT, NLA_UINT, * NLA_U8, NLA_U16, * NLA_U32, NLA_U64, * NLA_S8, NLA_S16, * NLA_S32, NLA_S64, * NLA_BE16, NLA_BE32, * NLA_MSECS Leaving the length field zero will verify the * given type fits, using it verifies minimum length * just like "All other" * NLA_BITFIELD32 Unused * NLA_REJECT Unused * All other Minimum length of attribute payload * * Meaning of validation union: * NLA_BITFIELD32 This is a 32-bit bitmap/bitselector attribute and * `bitfield32_valid' is the u32 value of valid flags * NLA_REJECT This attribute is always rejected and `reject_message' * may point to a string to report as the error instead * of the generic one in extended ACK. * NLA_NESTED `nested_policy' to a nested policy to validate, must * also set `len' to the max attribute number. Use the * provided NLA_POLICY_NESTED() macro. * Note that nla_parse() will validate, but of course not * parse, the nested sub-policies. * NLA_NESTED_ARRAY `nested_policy' points to a nested policy to validate, * must also set `len' to the max attribute number. Use * the provided NLA_POLICY_NESTED_ARRAY() macro. * The difference to NLA_NESTED is the structure: * NLA_NESTED has the nested attributes directly inside * while an array has the nested attributes at another * level down and the attribute types directly in the * nesting don't matter. * NLA_UINT, * NLA_U8, * NLA_U16, * NLA_U32, * NLA_U64, * NLA_BE16, * NLA_BE32, * NLA_SINT, * NLA_S8, * NLA_S16, * NLA_S32, * NLA_S64 The `min' and `max' fields are used depending on the * validation_type field, if that is min/max/range then * the min, max or both are used (respectively) to check * the value of the integer attribute. * Note that in the interest of code simplicity and * struct size both limits are s16, so you cannot * enforce a range that doesn't fall within the range * of s16 - do that using the NLA_POLICY_FULL_RANGE() * or NLA_POLICY_FULL_RANGE_SIGNED() macros instead. * Use the NLA_POLICY_MIN(), NLA_POLICY_MAX() and * NLA_POLICY_RANGE() macros. * NLA_UINT, * NLA_U8, * NLA_U16, * NLA_U32, * NLA_U64 If the validation_type field instead is set to * NLA_VALIDATE_RANGE_PTR, `range' must be a pointer * to a struct netlink_range_validation that indicates * the min/max values. * Use NLA_POLICY_FULL_RANGE(). * NLA_SINT, * NLA_S8, * NLA_S16, * NLA_S32, * NLA_S64 If the validation_type field instead is set to * NLA_VALIDATE_RANGE_PTR, `range_signed' must be a * pointer to a struct netlink_range_validation_signed * that indicates the min/max values. * Use NLA_POLICY_FULL_RANGE_SIGNED(). * * NLA_BINARY If the validation type is like the ones for integers * above, then the min/max length (not value like for * integers) of the attribute is enforced. * * All other Unused - but note that it's a union * * Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: * NLA_U8, NLA_U16, * NLA_U32, NLA_U64, * NLA_S8, NLA_S16, * NLA_S32, NLA_S64, * NLA_MSECS, * NLA_BINARY Validation function called for the attribute. * * All other Unused - but note that it's a union * * Example: * * static const u32 myvalidflags = 0xff231023; * * static const struct nla_policy my_policy[ATTR_MAX+1] = { * [ATTR_FOO] = { .type = NLA_U16 }, * [ATTR_BAR] = { .type = NLA_STRING, .len = BARSIZ }, * [ATTR_BAZ] = NLA_POLICY_EXACT_LEN(sizeof(struct mystruct)), * [ATTR_GOO] = NLA_POLICY_BITFIELD32(myvalidflags), * }; */ struct nla_policy { u8 type; u8 validation_type; u16 len; union { /** * @strict_start_type: first attribute to validate strictly * * This entry is special, and used for the attribute at index 0 * only, and specifies special data about the policy, namely it * specifies the "boundary type" where strict length validation * starts for any attribute types >= this value, also, strict * nesting validation starts here. * * Additionally, it means that NLA_UNSPEC is actually NLA_REJECT * for any types >= this, so need to use NLA_POLICY_MIN_LEN() to * get the previous pure { .len = xyz } behaviour. The advantage * of this is that types not specified in the policy will be * rejected. * * For completely new families it should be set to 1 so that the * validation is enforced for all attributes. For existing ones * it should be set at least when new attributes are added to * the enum used by the policy, and be set to the new value that * was added to enforce strict validation from thereon. */ u16 strict_start_type; /* private: use NLA_POLICY_*() to set */ const u32 bitfield32_valid; const u32 mask; const char *reject_message; const struct nla_policy *nested_policy; const struct netlink_range_validation *range; const struct netlink_range_validation_signed *range_signed; struct { s16 min, max; }; int (*validate)(const struct nlattr *attr, struct netlink_ext_ack *extack); }; }; #define NLA_POLICY_ETH_ADDR NLA_POLICY_EXACT_LEN(ETH_ALEN) #define NLA_POLICY_ETH_ADDR_COMPAT NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN) #define _NLA_POLICY_NESTED(maxattr, policy) \ { .type = NLA_NESTED, .nested_policy = policy, .len = maxattr } #define _NLA_POLICY_NESTED_ARRAY(maxattr, policy) \ { .type = NLA_NESTED_ARRAY, .nested_policy = policy, .len = maxattr } #define NLA_POLICY_NESTED(policy) \ _NLA_POLICY_NESTED(ARRAY_SIZE(policy) - 1, policy) #define NLA_POLICY_NESTED_ARRAY(policy) \ _NLA_POLICY_NESTED_ARRAY(ARRAY_SIZE(policy) - 1, policy) #define NLA_POLICY_BITFIELD32(valid) \ { .type = NLA_BITFIELD32, .bitfield32_valid = valid } #define __NLA_IS_UINT_TYPE(tp) \ (tp == NLA_U8 || tp == NLA_U16 || tp == NLA_U32 || \ tp == NLA_U64 || tp == NLA_UINT || \ tp == NLA_BE16 || tp == NLA_BE32) #define __NLA_IS_SINT_TYPE(tp) \ (tp == NLA_S8 || tp == NLA_S16 || tp == NLA_S32 || tp == NLA_S64 || \ tp == NLA_SINT) #define __NLA_ENSURE(condition) BUILD_BUG_ON_ZERO(!(condition)) #define NLA_ENSURE_UINT_TYPE(tp) \ (__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp)) + tp) #define NLA_ENSURE_UINT_OR_BINARY_TYPE(tp) \ (__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp) || \ tp == NLA_MSECS || \ tp == NLA_BINARY) + tp) #define NLA_ENSURE_SINT_TYPE(tp) \ (__NLA_ENSURE(__NLA_IS_SINT_TYPE(tp)) + tp) #define NLA_ENSURE_INT_OR_BINARY_TYPE(tp) \ (__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp) || \ __NLA_IS_SINT_TYPE(tp) || \ tp == NLA_MSECS || \ tp == NLA_BINARY) + tp) #define NLA_ENSURE_NO_VALIDATION_PTR(tp) \ (__NLA_ENSURE(tp != NLA_BITFIELD32 && \ tp != NLA_REJECT && \ tp != NLA_NESTED && \ tp != NLA_NESTED_ARRAY) + tp) #define NLA_POLICY_RANGE(tp, _min, _max) { \ .type = NLA_ENSURE_INT_OR_BINARY_TYPE(tp), \ .validation_type = NLA_VALIDATE_RANGE, \ .min = _min, \ .max = _max \ } #define NLA_POLICY_FULL_RANGE(tp, _range) { \ .type = NLA_ENSURE_UINT_OR_BINARY_TYPE(tp), \ .validation_type = NLA_VALIDATE_RANGE_PTR, \ .range = _range, \ } #define NLA_POLICY_FULL_RANGE_SIGNED(tp, _range) { \ .type = NLA_ENSURE_SINT_TYPE(tp), \ .validation_type = NLA_VALIDATE_RANGE_PTR, \ .range_signed = _range, \ } #define NLA_POLICY_MIN(tp, _min) { \ .type = NLA_ENSURE_INT_OR_BINARY_TYPE(tp), \ .validation_type = NLA_VALIDATE_MIN, \ .min = _min, \ } #define NLA_POLICY_MAX(tp, _max) { \ .type = NLA_ENSURE_INT_OR_BINARY_TYPE(tp), \ .validation_type = NLA_VALIDATE_MAX, \ .max = _max, \ } #define NLA_POLICY_MASK(tp, _mask) { \ .type = NLA_ENSURE_UINT_TYPE(tp), \ .validation_type = NLA_VALIDATE_MASK, \ .mask = _mask, \ } #define NLA_POLICY_VALIDATE_FN(tp, fn, ...) { \ .type = NLA_ENSURE_NO_VALIDATION_PTR(tp), \ .validation_type = NLA_VALIDATE_FUNCTION, \ .validate = fn, \ .len = __VA_ARGS__ + 0, \ } #define NLA_POLICY_EXACT_LEN(_len) NLA_POLICY_RANGE(NLA_BINARY, _len, _len) #define NLA_POLICY_EXACT_LEN_WARN(_len) { \ .type = NLA_BINARY, \ .validation_type = NLA_VALIDATE_RANGE_WARN_TOO_LONG, \ .min = _len, \ .max = _len \ } #define NLA_POLICY_MIN_LEN(_len) NLA_POLICY_MIN(NLA_BINARY, _len) #define NLA_POLICY_MAX_LEN(_len) NLA_POLICY_MAX(NLA_BINARY, _len) /** * struct nl_info - netlink source information * @nlh: Netlink message header of original request * @nl_net: Network namespace * @portid: Netlink PORTID of requesting application * @skip_notify: Skip netlink notifications to user space * @skip_notify_kernel: Skip selected in-kernel notifications */ struct nl_info { struct nlmsghdr *nlh; struct net *nl_net; u32 portid; u8 skip_notify:1, skip_notify_kernel:1; }; /** * enum netlink_validation - netlink message/attribute validation levels * @NL_VALIDATE_LIBERAL: Old-style "be liberal" validation, not caring about * extra data at the end of the message, attributes being longer than * they should be, or unknown attributes being present. * @NL_VALIDATE_TRAILING: Reject junk data encountered after attribute parsing. * @NL_VALIDATE_MAXTYPE: Reject attributes > max type; Together with _TRAILING * this is equivalent to the old nla_parse_strict()/nlmsg_parse_strict(). * @NL_VALIDATE_UNSPEC: Reject attributes with NLA_UNSPEC in the policy. * This can safely be set by the kernel when the given policy has no * NLA_UNSPEC anymore, and can thus be used to ensure policy entries * are enforced going forward. * @NL_VALIDATE_STRICT_ATTRS: strict attribute policy parsing (e.g. * U8, U16, U32 must have exact size, etc.) * @NL_VALIDATE_NESTED: Check that NLA_F_NESTED is set for NLA_NESTED(_ARRAY) * and unset for other policies. */ enum netlink_validation { NL_VALIDATE_LIBERAL = 0, NL_VALIDATE_TRAILING = BIT(0), NL_VALIDATE_MAXTYPE = BIT(1), NL_VALIDATE_UNSPEC = BIT(2), NL_VALIDATE_STRICT_ATTRS = BIT(3), NL_VALIDATE_NESTED = BIT(4), }; #define NL_VALIDATE_DEPRECATED_STRICT (NL_VALIDATE_TRAILING |\ NL_VALIDATE_MAXTYPE) #define NL_VALIDATE_STRICT (NL_VALIDATE_TRAILING |\ NL_VALIDATE_MAXTYPE |\ NL_VALIDATE_UNSPEC |\ NL_VALIDATE_STRICT_ATTRS |\ NL_VALIDATE_NESTED) int netlink_rcv_skb(struct sk_buff *skb, int (*cb)(struct sk_buff *, struct nlmsghdr *, struct netlink_ext_ack *)); int nlmsg_notify(struct sock *sk, struct sk_buff *skb, u32 portid, unsigned int group, int report, gfp_t flags); int __nla_validate(const struct nlattr *head, int len, int maxtype, const struct nla_policy *policy, unsigned int validate, struct netlink_ext_ack *extack); int __nla_parse(struct nlattr **tb, int maxtype, const struct nlattr *head, int len, const struct nla_policy *policy, unsigned int validate, struct netlink_ext_ack *extack); int nla_policy_len(const struct nla_policy *, int); struct nlattr *nla_find(const struct nlattr *head, int len, int attrtype); ssize_t nla_strscpy(char *dst, const struct nlattr *nla, size_t dstsize); char *nla_strdup(const struct nlattr *nla, gfp_t flags); int nla_memcpy(void *dest, const struct nlattr *src, int count); int nla_memcmp(const struct nlattr *nla, const void *data, size_t size); int nla_strcmp(const struct nlattr *nla, const char *str); struct nlattr *__nla_reserve(struct sk_buff *skb, int attrtype, int attrlen); struct nlattr *__nla_reserve_64bit(struct sk_buff *skb, int attrtype, int attrlen, int padattr); void *__nla_reserve_nohdr(struct sk_buff *skb, int attrlen); struct nlattr *nla_reserve(struct sk_buff *skb, int attrtype, int attrlen); struct nlattr *nla_reserve_64bit(struct sk_buff *skb, int attrtype, int attrlen, int padattr); void *nla_reserve_nohdr(struct sk_buff *skb, int attrlen); void __nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data); void __nla_put_64bit(struct sk_buff *skb, int attrtype, int attrlen, const void *data, int padattr); void __nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data); int nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data); int nla_put_64bit(struct sk_buff *skb, int attrtype, int attrlen, const void *data, int padattr); int nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data); int nla_append(struct sk_buff *skb, int attrlen, const void *data); /************************************************************************** * Netlink Messages **************************************************************************/ /** * nlmsg_msg_size - length of netlink message not including padding * @payload: length of message payload */ static inline int nlmsg_msg_size(int payload) { return NLMSG_HDRLEN + payload; } /** * nlmsg_total_size - length of netlink message including padding * @payload: length of message payload */ static inline int nlmsg_total_size(int payload) { return NLMSG_ALIGN(nlmsg_msg_size(payload)); } /** * nlmsg_padlen - length of padding at the message's tail * @payload: length of message payload */ static inline int nlmsg_padlen(int payload) { return nlmsg_total_size(payload) - nlmsg_msg_size(payload); } /** * nlmsg_data - head of message payload * @nlh: netlink message header */ static inline void *nlmsg_data(const struct nlmsghdr *nlh) { return (unsigned char *) nlh + NLMSG_HDRLEN; } /** * nlmsg_len - length of message payload * @nlh: netlink message header */ static inline int nlmsg_len(const struct nlmsghdr *nlh) { return nlh->nlmsg_len - NLMSG_HDRLEN; } /** * nlmsg_payload - message payload if the data fits in the len * @nlh: netlink message header * @len: struct length * * Returns: The netlink message payload/data if the length is sufficient, * otherwise NULL. */ static inline void *nlmsg_payload(const struct nlmsghdr *nlh, size_t len) { if (nlh->nlmsg_len < nlmsg_msg_size(len)) return NULL; return nlmsg_data(nlh); } /** * nlmsg_attrdata - head of attributes data * @nlh: netlink message header * @hdrlen: length of family specific header */ static inline struct nlattr *nlmsg_attrdata(const struct nlmsghdr *nlh, int hdrlen) { unsigned char *data = nlmsg_data(nlh); return (struct nlattr *) (data + NLMSG_ALIGN(hdrlen)); } /** * nlmsg_attrlen - length of attributes data * @nlh: netlink message header * @hdrlen: length of family specific header */ static inline int nlmsg_attrlen(const struct nlmsghdr *nlh, int hdrlen) { return nlmsg_len(nlh) - NLMSG_ALIGN(hdrlen); } /** * nlmsg_ok - check if the netlink message fits into the remaining bytes * @nlh: netlink message header * @remaining: number of bytes remaining in message stream */ static inline int nlmsg_ok(const struct nlmsghdr *nlh, int remaining) { return (remaining >= (int) sizeof(struct nlmsghdr) && nlh->nlmsg_len >= sizeof(struct nlmsghdr) && nlh->nlmsg_len <= remaining); } /** * nlmsg_next - next netlink message in message stream * @nlh: netlink message header * @remaining: number of bytes remaining in message stream * * Returns: the next netlink message in the message stream and * decrements remaining by the size of the current message. */ static inline struct nlmsghdr * nlmsg_next(const struct nlmsghdr *nlh, int *remaining) { int totlen = NLMSG_ALIGN(nlh->nlmsg_len); *remaining -= totlen; return (struct nlmsghdr *) ((unsigned char *) nlh + totlen); } /** * nla_parse - Parse a stream of attributes into a tb buffer * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @head: head of attribute stream * @len: length of attribute stream * @policy: validation policy * @extack: extended ACK pointer * * Parses a stream of attributes and stores a pointer to each attribute in * the tb array accessible via the attribute type. Attributes with a type * exceeding maxtype will be rejected, policy must be specified, attributes * will be validated in the strictest way possible. * * Returns: 0 on success or a negative error code. */ static inline int nla_parse(struct nlattr **tb, int maxtype, const struct nlattr *head, int len, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_parse(tb, maxtype, head, len, policy, NL_VALIDATE_STRICT, extack); } /** * nla_parse_deprecated - Parse a stream of attributes into a tb buffer * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @head: head of attribute stream * @len: length of attribute stream * @policy: validation policy * @extack: extended ACK pointer * * Parses a stream of attributes and stores a pointer to each attribute in * the tb array accessible via the attribute type. Attributes with a type * exceeding maxtype will be ignored and attributes from the policy are not * always strictly validated (only for new attributes). * * Returns: 0 on success or a negative error code. */ static inline int nla_parse_deprecated(struct nlattr **tb, int maxtype, const struct nlattr *head, int len, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_parse(tb, maxtype, head, len, policy, NL_VALIDATE_LIBERAL, extack); } /** * nla_parse_deprecated_strict - Parse a stream of attributes into a tb buffer * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @head: head of attribute stream * @len: length of attribute stream * @policy: validation policy * @extack: extended ACK pointer * * Parses a stream of attributes and stores a pointer to each attribute in * the tb array accessible via the attribute type. Attributes with a type * exceeding maxtype will be rejected as well as trailing data, but the * policy is not completely strictly validated (only for new attributes). * * Returns: 0 on success or a negative error code. */ static inline int nla_parse_deprecated_strict(struct nlattr **tb, int maxtype, const struct nlattr *head, int len, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_parse(tb, maxtype, head, len, policy, NL_VALIDATE_DEPRECATED_STRICT, extack); } /** * __nlmsg_parse - parse attributes of a netlink message * @nlh: netlink message header * @hdrlen: length of family specific header * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @policy: validation policy * @validate: validation strictness * @extack: extended ACK report struct * * See nla_parse() */ static inline int __nlmsg_parse(const struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[], int maxtype, const struct nla_policy *policy, unsigned int validate, struct netlink_ext_ack *extack) { if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) { NL_SET_ERR_MSG(extack, "Invalid header length"); return -EINVAL; } return __nla_parse(tb, maxtype, nlmsg_attrdata(nlh, hdrlen), nlmsg_attrlen(nlh, hdrlen), policy, validate, extack); } /** * nlmsg_parse - parse attributes of a netlink message * @nlh: netlink message header * @hdrlen: length of family specific header * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct * * See nla_parse() */ static inline int nlmsg_parse(const struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[], int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nlmsg_parse(nlh, hdrlen, tb, maxtype, policy, NL_VALIDATE_STRICT, extack); } /** * nlmsg_parse_deprecated - parse attributes of a netlink message * @nlh: netlink message header * @hdrlen: length of family specific header * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct * * See nla_parse_deprecated() */ static inline int nlmsg_parse_deprecated(const struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[], int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nlmsg_parse(nlh, hdrlen, tb, maxtype, policy, NL_VALIDATE_LIBERAL, extack); } /** * nlmsg_parse_deprecated_strict - parse attributes of a netlink message * @nlh: netlink message header * @hdrlen: length of family specific header * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct * * See nla_parse_deprecated_strict() */ static inline int nlmsg_parse_deprecated_strict(const struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[], int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nlmsg_parse(nlh, hdrlen, tb, maxtype, policy, NL_VALIDATE_DEPRECATED_STRICT, extack); } /** * nlmsg_find_attr - find a specific attribute in a netlink message * @nlh: netlink message header * @hdrlen: length of family specific header * @attrtype: type of attribute to look for * * Returns: the first attribute which matches the specified type. */ static inline struct nlattr *nlmsg_find_attr(const struct nlmsghdr *nlh, int hdrlen, int attrtype) { return nla_find(nlmsg_attrdata(nlh, hdrlen), nlmsg_attrlen(nlh, hdrlen), attrtype); } /** * nla_validate_deprecated - Validate a stream of attributes * @head: head of attribute stream * @len: length of attribute stream * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct * * Validates all attributes in the specified attribute stream against the * specified policy. Validation is done in liberal mode. * See documentation of struct nla_policy for more details. * * Returns: 0 on success or a negative error code. */ static inline int nla_validate_deprecated(const struct nlattr *head, int len, int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_validate(head, len, maxtype, policy, NL_VALIDATE_LIBERAL, extack); } /** * nla_validate - Validate a stream of attributes * @head: head of attribute stream * @len: length of attribute stream * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct * * Validates all attributes in the specified attribute stream against the * specified policy. Validation is done in strict mode. * See documentation of struct nla_policy for more details. * * Returns: 0 on success or a negative error code. */ static inline int nla_validate(const struct nlattr *head, int len, int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_validate(head, len, maxtype, policy, NL_VALIDATE_STRICT, extack); } /** * nlmsg_validate_deprecated - validate a netlink message including attributes * @nlh: netlinket message header * @hdrlen: length of family specific header * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct */ static inline int nlmsg_validate_deprecated(const struct nlmsghdr *nlh, int hdrlen, int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) return -EINVAL; return __nla_validate(nlmsg_attrdata(nlh, hdrlen), nlmsg_attrlen(nlh, hdrlen), maxtype, policy, NL_VALIDATE_LIBERAL, extack); } /** * nlmsg_report - need to report back to application? * @nlh: netlink message header * * Returns: 1 if a report back to the application is requested. */ static inline int nlmsg_report(const struct nlmsghdr *nlh) { return nlh ? !!(nlh->nlmsg_flags & NLM_F_ECHO) : 0; } /** * nlmsg_seq - return the seq number of netlink message * @nlh: netlink message header * * Returns: 0 if netlink message is NULL */ static inline u32 nlmsg_seq(const struct nlmsghdr *nlh) { return nlh ? nlh->nlmsg_seq : 0; } /** * nlmsg_for_each_attr - iterate over a stream of attributes * @pos: loop counter, set to current attribute * @nlh: netlink message header * @hdrlen: length of family specific header * @rem: initialized to len, holds bytes currently remaining in stream */ #define nlmsg_for_each_attr(pos, nlh, hdrlen, rem) \ nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \ nlmsg_attrlen(nlh, hdrlen), rem) /** * nlmsg_for_each_attr_type - iterate over a stream of attributes * @pos: loop counter, set to the current attribute * @type: required attribute type for @pos * @nlh: netlink message header * @hdrlen: length of the family specific header * @rem: initialized to len, holds bytes currently remaining in stream */ #define nlmsg_for_each_attr_type(pos, type, nlh, hdrlen, rem) \ nlmsg_for_each_attr(pos, nlh, hdrlen, rem) \ if (nla_type(pos) == type) /** * nlmsg_put - Add a new netlink message to an skb * @skb: socket buffer to store message in * @portid: netlink PORTID of requesting application * @seq: sequence number of message * @type: message type * @payload: length of message payload * @flags: message flags * * Returns: NULL if the tailroom of the skb is insufficient to store * the message header and payload. */ static inline struct nlmsghdr *nlmsg_put(struct sk_buff *skb, u32 portid, u32 seq, int type, int payload, int flags) { if (unlikely(skb_tailroom(skb) < nlmsg_total_size(payload))) return NULL; return __nlmsg_put(skb, portid, seq, type, payload, flags); } /** * nlmsg_append - Add more data to a nlmsg in a skb * @skb: socket buffer to store message in * @size: length of message payload * * Append data to an existing nlmsg, used when constructing a message * with multiple fixed-format headers (which is rare). * Returns: NULL if the tailroom of the skb is insufficient to store * the extra payload. */ static inline void *nlmsg_append(struct sk_buff *skb, u32 size) { if (unlikely(skb_tailroom(skb) < NLMSG_ALIGN(size))) return NULL; if (NLMSG_ALIGN(size) - size) memset(skb_tail_pointer(skb) + size, 0, NLMSG_ALIGN(size) - size); return __skb_put(skb, NLMSG_ALIGN(size)); } /** * nlmsg_put_answer - Add a new callback based netlink message to an skb * @skb: socket buffer to store message in * @cb: netlink callback * @type: message type * @payload: length of message payload * @flags: message flags * * Returns: NULL if the tailroom of the skb is insufficient to store * the message header and payload. */ static inline struct nlmsghdr *nlmsg_put_answer(struct sk_buff *skb, struct netlink_callback *cb, int type, int payload, int flags) { return nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, type, payload, flags); } /** * nlmsg_new - Allocate a new netlink message * @payload: size of the message payload * @flags: the type of memory to allocate. * * Use NLMSG_DEFAULT_SIZE if the size of the payload isn't known * and a good default is needed. */ static inline struct sk_buff *nlmsg_new(size_t payload, gfp_t flags) { return alloc_skb(nlmsg_total_size(payload), flags); } /** * nlmsg_new_large - Allocate a new netlink message with non-contiguous * physical memory * @payload: size of the message payload * * The allocated skb is unable to have frag page for shinfo->frags*, * as the NULL setting for skb->head in netlink_skb_destructor() will * bypass most of the handling in skb_release_data() */ static inline struct sk_buff *nlmsg_new_large(size_t payload) { return netlink_alloc_large_skb(nlmsg_total_size(payload), 0); } /** * nlmsg_end - Finalize a netlink message * @skb: socket buffer the message is stored in * @nlh: netlink message header * * Corrects the netlink message header to include the appended * attributes. Only necessary if attributes have been added to * the message. */ static inline void nlmsg_end(struct sk_buff *skb, struct nlmsghdr *nlh) { nlh->nlmsg_len = skb_tail_pointer(skb) - (unsigned char *)nlh; } /** * nlmsg_get_pos - return current position in netlink message * @skb: socket buffer the message is stored in * * Returns: a pointer to the current tail of the message. */ static inline void *nlmsg_get_pos(struct sk_buff *skb) { return skb_tail_pointer(skb); } /** * nlmsg_trim - Trim message to a mark * @skb: socket buffer the message is stored in * @mark: mark to trim to * * Trims the message to the provided mark. */ static inline void nlmsg_trim(struct sk_buff *skb, const void *mark) { if (mark) { WARN_ON((unsigned char *) mark < skb->data); skb_trim(skb, (unsigned char *) mark - skb->data); } } /** * nlmsg_cancel - Cancel construction of a netlink message * @skb: socket buffer the message is stored in * @nlh: netlink message header * * Removes the complete netlink message including all * attributes from the socket buffer again. */ static inline void nlmsg_cancel(struct sk_buff *skb, struct nlmsghdr *nlh) { nlmsg_trim(skb, nlh); } /** * nlmsg_free - drop a netlink message * @skb: socket buffer of netlink message */ static inline void nlmsg_free(struct sk_buff *skb) { kfree_skb(skb); } /** * nlmsg_consume - free a netlink message * @skb: socket buffer of netlink message */ static inline void nlmsg_consume(struct sk_buff *skb) { consume_skb(skb); } /** * nlmsg_multicast_filtered - multicast a netlink message with filter function * @sk: netlink socket to spread messages to * @skb: netlink message as socket buffer * @portid: own netlink portid to avoid sending to yourself * @group: multicast group id * @flags: allocation flags * @filter: filter function * @filter_data: filter function private data * * Return: 0 on success, negative error code for failure. */ static inline int nlmsg_multicast_filtered(struct sock *sk, struct sk_buff *skb, u32 portid, unsigned int group, gfp_t flags, netlink_filter_fn filter, void *filter_data) { int err; NETLINK_CB(skb).dst_group = group; err = netlink_broadcast_filtered(sk, skb, portid, group, flags, filter, filter_data); if (err > 0) err = 0; return err; } /** * nlmsg_multicast - multicast a netlink message * @sk: netlink socket to spread messages to * @skb: netlink message as socket buffer * @portid: own netlink portid to avoid sending to yourself * @group: multicast group id * @flags: allocation flags */ static inline int nlmsg_multicast(struct sock *sk, struct sk_buff *skb, u32 portid, unsigned int group, gfp_t flags) { return nlmsg_multicast_filtered(sk, skb, portid, group, flags, NULL, NULL); } /** * nlmsg_unicast - unicast a netlink message * @sk: netlink socket to spread message to * @skb: netlink message as socket buffer * @portid: netlink portid of the destination socket */ static inline int nlmsg_unicast(struct sock *sk, struct sk_buff *skb, u32 portid) { int err; err = netlink_unicast(sk, skb, portid, MSG_DONTWAIT); if (err > 0) err = 0; return err; } /** * nlmsg_for_each_msg - iterate over a stream of messages * @pos: loop counter, set to current message * @head: head of message stream * @len: length of message stream * @rem: initialized to len, holds bytes currently remaining in stream */ #define nlmsg_for_each_msg(pos, head, len, rem) \ for (pos = head, rem = len; \ nlmsg_ok(pos, rem); \ pos = nlmsg_next(pos, &(rem))) /** * nl_dump_check_consistent - check if sequence is consistent and advertise if not * @cb: netlink callback structure that stores the sequence number * @nlh: netlink message header to write the flag to * * This function checks if the sequence (generation) number changed during dump * and if it did, advertises it in the netlink message header. * * The correct way to use it is to set cb->seq to the generation counter when * all locks for dumping have been acquired, and then call this function for * each message that is generated. * * Note that due to initialisation concerns, 0 is an invalid sequence number * and must not be used by code that uses this functionality. */ static inline void nl_dump_check_consistent(struct netlink_callback *cb, struct nlmsghdr *nlh) { if (cb->prev_seq && cb->seq != cb->prev_seq) nlh->nlmsg_flags |= NLM_F_DUMP_INTR; cb->prev_seq = cb->seq; } /************************************************************************** * Netlink Attributes **************************************************************************/ /** * nla_attr_size - length of attribute not including padding * @payload: length of payload */ static inline int nla_attr_size(int payload) { return NLA_HDRLEN + payload; } /** * nla_total_size - total length of attribute including padding * @payload: length of payload */ static inline int nla_total_size(int payload) { return NLA_ALIGN(nla_attr_size(payload)); } /** * nla_padlen - length of padding at the tail of attribute * @payload: length of payload */ static inline int nla_padlen(int payload) { return nla_total_size(payload) - nla_attr_size(payload); } /** * nla_type - attribute type * @nla: netlink attribute */ static inline int nla_type(const struct nlattr *nla) { return nla->nla_type & NLA_TYPE_MASK; } /** * nla_data - head of payload * @nla: netlink attribute */ static inline void *nla_data(const struct nlattr *nla) { return (char *) nla + NLA_HDRLEN; } /** * nla_len - length of payload * @nla: netlink attribute */ static inline u16 nla_len(const struct nlattr *nla) { return nla->nla_len - NLA_HDRLEN; } /** * nla_ok - check if the netlink attribute fits into the remaining bytes * @nla: netlink attribute * @remaining: number of bytes remaining in attribute stream */ static inline int nla_ok(const struct nlattr *nla, int remaining) { return remaining >= (int) sizeof(*nla) && nla->nla_len >= sizeof(*nla) && nla->nla_len <= remaining; } /** * nla_next - next netlink attribute in attribute stream * @nla: netlink attribute * @remaining: number of bytes remaining in attribute stream * * Returns: the next netlink attribute in the attribute stream and * decrements remaining by the size of the current attribute. */ static inline struct nlattr *nla_next(const struct nlattr *nla, int *remaining) { unsigned int totlen = NLA_ALIGN(nla->nla_len); *remaining -= totlen; return (struct nlattr *) ((char *) nla + totlen); } /** * nla_find_nested - find attribute in a set of nested attributes * @nla: attribute containing the nested attributes * @attrtype: type of attribute to look for * * Returns: the first attribute which matches the specified type. */ static inline struct nlattr * nla_find_nested(const struct nlattr *nla, int attrtype) { return nla_find(nla_data(nla), nla_len(nla), attrtype); } /** * nla_parse_nested - parse nested attributes * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @nla: attribute containing the nested attributes * @policy: validation policy * @extack: extended ACK report struct * * See nla_parse() */ static inline int nla_parse_nested(struct nlattr *tb[], int maxtype, const struct nlattr *nla, const struct nla_policy *policy, struct netlink_ext_ack *extack) { if (!(nla->nla_type & NLA_F_NESTED)) { NL_SET_ERR_MSG_ATTR(extack, nla, "NLA_F_NESTED is missing"); return -EINVAL; } return __nla_parse(tb, maxtype, nla_data(nla), nla_len(nla), policy, NL_VALIDATE_STRICT, extack); } /** * nla_parse_nested_deprecated - parse nested attributes * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @nla: attribute containing the nested attributes * @policy: validation policy * @extack: extended ACK report struct * * See nla_parse_deprecated() */ static inline int nla_parse_nested_deprecated(struct nlattr *tb[], int maxtype, const struct nlattr *nla, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_parse(tb, maxtype, nla_data(nla), nla_len(nla), policy, NL_VALIDATE_LIBERAL, extack); } /** * nla_put_u8 - Add a u8 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_u8(struct sk_buff *skb, int attrtype, u8 value) { /* temporary variables to work around GCC PR81715 with asan-stack=1 */ u8 tmp = value; return nla_put(skb, attrtype, sizeof(u8), &tmp); } /** * nla_put_u16 - Add a u16 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value) { u16 tmp = value; return nla_put(skb, attrtype, sizeof(u16), &tmp); } /** * nla_put_be16 - Add a __be16 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value) { __be16 tmp = value; return nla_put(skb, attrtype, sizeof(__be16), &tmp); } /** * nla_put_net16 - Add 16-bit network byte order netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_net16(struct sk_buff *skb, int attrtype, __be16 value) { __be16 tmp = value; return nla_put_be16(skb, attrtype | NLA_F_NET_BYTEORDER, tmp); } /** * nla_put_le16 - Add a __le16 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_le16(struct sk_buff *skb, int attrtype, __le16 value) { __le16 tmp = value; return nla_put(skb, attrtype, sizeof(__le16), &tmp); } /** * nla_put_u32 - Add a u32 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value) { u32 tmp = value; return nla_put(skb, attrtype, sizeof(u32), &tmp); } /** * nla_put_uint - Add a variable-size unsigned int to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_uint(struct sk_buff *skb, int attrtype, u64 value) { u64 tmp64 = value; u32 tmp32 = value; if (tmp64 == tmp32) return nla_put_u32(skb, attrtype, tmp32); return nla_put(skb, attrtype, sizeof(u64), &tmp64); } /** * nla_put_be32 - Add a __be32 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value) { __be32 tmp = value; return nla_put(skb, attrtype, sizeof(__be32), &tmp); } /** * nla_put_net32 - Add 32-bit network byte order netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_net32(struct sk_buff *skb, int attrtype, __be32 value) { __be32 tmp = value; return nla_put_be32(skb, attrtype | NLA_F_NET_BYTEORDER, tmp); } /** * nla_put_le32 - Add a __le32 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_le32(struct sk_buff *skb, int attrtype, __le32 value) { __le32 tmp = value; return nla_put(skb, attrtype, sizeof(__le32), &tmp); } /** * nla_put_u64_64bit - Add a u64 netlink attribute to a skb and align it * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value * @padattr: attribute type for the padding */ static inline int nla_put_u64_64bit(struct sk_buff *skb, int attrtype, u64 value, int padattr) { u64 tmp = value; return nla_put_64bit(skb, attrtype, sizeof(u64), &tmp, padattr); } /** * nla_put_be64 - Add a __be64 netlink attribute to a socket buffer and align it * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value * @padattr: attribute type for the padding */ static inline int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value, int padattr) { __be64 tmp = value; return nla_put_64bit(skb, attrtype, sizeof(__be64), &tmp, padattr); } /** * nla_put_net64 - Add 64-bit network byte order nlattr to a skb and align it * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value * @padattr: attribute type for the padding */ static inline int nla_put_net64(struct sk_buff *skb, int attrtype, __be64 value, int padattr) { __be64 tmp = value; return nla_put_be64(skb, attrtype | NLA_F_NET_BYTEORDER, tmp, padattr); } /** * nla_put_le64 - Add a __le64 netlink attribute to a socket buffer and align it * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value * @padattr: attribute type for the padding */ static inline int nla_put_le64(struct sk_buff *skb, int attrtype, __le64 value, int padattr) { __le64 tmp = value; return nla_put_64bit(skb, attrtype, sizeof(__le64), &tmp, padattr); } /** * nla_put_s8 - Add a s8 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value) { s8 tmp = value; return nla_put(skb, attrtype, sizeof(s8), &tmp); } /** * nla_put_s16 - Add a s16 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value) { s16 tmp = value; return nla_put(skb, attrtype, sizeof(s16), &tmp); } /** * nla_put_s32 - Add a s32 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value) { s32 tmp = value; return nla_put(skb, attrtype, sizeof(s32), &tmp); } /** * nla_put_s64 - Add a s64 netlink attribute to a socket buffer and align it * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value * @padattr: attribute type for the padding */ static inline int nla_put_s64(struct sk_buff *skb, int attrtype, s64 value, int padattr) { s64 tmp = value; return nla_put_64bit(skb, attrtype, sizeof(s64), &tmp, padattr); } /** * nla_put_sint - Add a variable-size signed int to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: numeric value */ static inline int nla_put_sint(struct sk_buff *skb, int attrtype, s64 value) { s64 tmp64 = value; s32 tmp32 = value; if (tmp64 == tmp32) return nla_put_s32(skb, attrtype, tmp32); return nla_put(skb, attrtype, sizeof(s64), &tmp64); } /** * nla_put_string - Add a string netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @str: NUL terminated string */ static inline int nla_put_string(struct sk_buff *skb, int attrtype, const char *str) { return nla_put(skb, attrtype, strlen(str) + 1, str); } /** * nla_put_flag - Add a flag netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type */ static inline int nla_put_flag(struct sk_buff *skb, int attrtype) { return nla_put(skb, attrtype, 0, NULL); } /** * nla_put_msecs - Add a msecs netlink attribute to a skb and align it * @skb: socket buffer to add attribute to * @attrtype: attribute type * @njiffies: number of jiffies to convert to msecs * @padattr: attribute type for the padding */ static inline int nla_put_msecs(struct sk_buff *skb, int attrtype, unsigned long njiffies, int padattr) { u64 tmp = jiffies_to_msecs(njiffies); return nla_put_64bit(skb, attrtype, sizeof(u64), &tmp, padattr); } /** * nla_put_in_addr - Add an IPv4 address netlink attribute to a socket * buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @addr: IPv4 address */ static inline int nla_put_in_addr(struct sk_buff *skb, int attrtype, __be32 addr) { __be32 tmp = addr; return nla_put_be32(skb, attrtype, tmp); } /** * nla_put_in6_addr - Add an IPv6 address netlink attribute to a socket * buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @addr: IPv6 address */ static inline int nla_put_in6_addr(struct sk_buff *skb, int attrtype, const struct in6_addr *addr) { return nla_put(skb, attrtype, sizeof(*addr), addr); } /** * nla_put_bitfield32 - Add a bitfield32 netlink attribute to a socket buffer * @skb: socket buffer to add attribute to * @attrtype: attribute type * @value: value carrying bits * @selector: selector of valid bits */ static inline int nla_put_bitfield32(struct sk_buff *skb, int attrtype, __u32 value, __u32 selector) { struct nla_bitfield32 tmp = { value, selector, }; return nla_put(skb, attrtype, sizeof(tmp), &tmp); } /** * nla_get_u32 - return payload of u32 attribute * @nla: u32 netlink attribute */ static inline u32 nla_get_u32(const struct nlattr *nla) { return *(u32 *) nla_data(nla); } /** * nla_get_u32_default - return payload of u32 attribute or default * @nla: u32 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline u32 nla_get_u32_default(const struct nlattr *nla, u32 defvalue) { if (!nla) return defvalue; return nla_get_u32(nla); } /** * nla_get_be32 - return payload of __be32 attribute * @nla: __be32 netlink attribute */ static inline __be32 nla_get_be32(const struct nlattr *nla) { return *(__be32 *) nla_data(nla); } /** * nla_get_be32_default - return payload of be32 attribute or default * @nla: __be32 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline __be32 nla_get_be32_default(const struct nlattr *nla, __be32 defvalue) { if (!nla) return defvalue; return nla_get_be32(nla); } /** * nla_get_le32 - return payload of __le32 attribute * @nla: __le32 netlink attribute */ static inline __le32 nla_get_le32(const struct nlattr *nla) { return *(__le32 *) nla_data(nla); } /** * nla_get_le32_default - return payload of le32 attribute or default * @nla: __le32 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline __le32 nla_get_le32_default(const struct nlattr *nla, __le32 defvalue) { if (!nla) return defvalue; return nla_get_le32(nla); } /** * nla_get_u16 - return payload of u16 attribute * @nla: u16 netlink attribute */ static inline u16 nla_get_u16(const struct nlattr *nla) { return *(u16 *) nla_data(nla); } /** * nla_get_u16_default - return payload of u16 attribute or default * @nla: u16 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline u16 nla_get_u16_default(const struct nlattr *nla, u16 defvalue) { if (!nla) return defvalue; return nla_get_u16(nla); } /** * nla_get_be16 - return payload of __be16 attribute * @nla: __be16 netlink attribute */ static inline __be16 nla_get_be16(const struct nlattr *nla) { return *(__be16 *) nla_data(nla); } /** * nla_get_be16_default - return payload of be16 attribute or default * @nla: __be16 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline __be16 nla_get_be16_default(const struct nlattr *nla, __be16 defvalue) { if (!nla) return defvalue; return nla_get_be16(nla); } /** * nla_get_le16 - return payload of __le16 attribute * @nla: __le16 netlink attribute */ static inline __le16 nla_get_le16(const struct nlattr *nla) { return *(__le16 *) nla_data(nla); } /** * nla_get_le16_default - return payload of le16 attribute or default * @nla: __le16 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline __le16 nla_get_le16_default(const struct nlattr *nla, __le16 defvalue) { if (!nla) return defvalue; return nla_get_le16(nla); } /** * nla_get_u8 - return payload of u8 attribute * @nla: u8 netlink attribute */ static inline u8 nla_get_u8(const struct nlattr *nla) { return *(u8 *) nla_data(nla); } /** * nla_get_u8_default - return payload of u8 attribute or default * @nla: u8 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline u8 nla_get_u8_default(const struct nlattr *nla, u8 defvalue) { if (!nla) return defvalue; return nla_get_u8(nla); } /** * nla_get_u64 - return payload of u64 attribute * @nla: u64 netlink attribute */ static inline u64 nla_get_u64(const struct nlattr *nla) { u64 tmp; nla_memcpy(&tmp, nla, sizeof(tmp)); return tmp; } /** * nla_get_u64_default - return payload of u64 attribute or default * @nla: u64 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline u64 nla_get_u64_default(const struct nlattr *nla, u64 defvalue) { if (!nla) return defvalue; return nla_get_u64(nla); } /** * nla_get_uint - return payload of uint attribute * @nla: uint netlink attribute */ static inline u64 nla_get_uint(const struct nlattr *nla) { if (nla_len(nla) == sizeof(u32)) return nla_get_u32(nla); return nla_get_u64(nla); } /** * nla_get_uint_default - return payload of uint attribute or default * @nla: uint netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline u64 nla_get_uint_default(const struct nlattr *nla, u64 defvalue) { if (!nla) return defvalue; return nla_get_uint(nla); } /** * nla_get_be64 - return payload of __be64 attribute * @nla: __be64 netlink attribute */ static inline __be64 nla_get_be64(const struct nlattr *nla) { __be64 tmp; nla_memcpy(&tmp, nla, sizeof(tmp)); return tmp; } /** * nla_get_be64_default - return payload of be64 attribute or default * @nla: __be64 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline __be64 nla_get_be64_default(const struct nlattr *nla, __be64 defvalue) { if (!nla) return defvalue; return nla_get_be64(nla); } /** * nla_get_le64 - return payload of __le64 attribute * @nla: __le64 netlink attribute */ static inline __le64 nla_get_le64(const struct nlattr *nla) { return *(__le64 *) nla_data(nla); } /** * nla_get_le64_default - return payload of le64 attribute or default * @nla: __le64 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline __le64 nla_get_le64_default(const struct nlattr *nla, __le64 defvalue) { if (!nla) return defvalue; return nla_get_le64(nla); } /** * nla_get_s32 - return payload of s32 attribute * @nla: s32 netlink attribute */ static inline s32 nla_get_s32(const struct nlattr *nla) { return *(s32 *) nla_data(nla); } /** * nla_get_s32_default - return payload of s32 attribute or default * @nla: s32 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline s32 nla_get_s32_default(const struct nlattr *nla, s32 defvalue) { if (!nla) return defvalue; return nla_get_s32(nla); } /** * nla_get_s16 - return payload of s16 attribute * @nla: s16 netlink attribute */ static inline s16 nla_get_s16(const struct nlattr *nla) { return *(s16 *) nla_data(nla); } /** * nla_get_s16_default - return payload of s16 attribute or default * @nla: s16 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline s16 nla_get_s16_default(const struct nlattr *nla, s16 defvalue) { if (!nla) return defvalue; return nla_get_s16(nla); } /** * nla_get_s8 - return payload of s8 attribute * @nla: s8 netlink attribute */ static inline s8 nla_get_s8(const struct nlattr *nla) { return *(s8 *) nla_data(nla); } /** * nla_get_s8_default - return payload of s8 attribute or default * @nla: s8 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline s8 nla_get_s8_default(const struct nlattr *nla, s8 defvalue) { if (!nla) return defvalue; return nla_get_s8(nla); } /** * nla_get_s64 - return payload of s64 attribute * @nla: s64 netlink attribute */ static inline s64 nla_get_s64(const struct nlattr *nla) { s64 tmp; nla_memcpy(&tmp, nla, sizeof(tmp)); return tmp; } /** * nla_get_s64_default - return payload of s64 attribute or default * @nla: s64 netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline s64 nla_get_s64_default(const struct nlattr *nla, s64 defvalue) { if (!nla) return defvalue; return nla_get_s64(nla); } /** * nla_get_sint - return payload of uint attribute * @nla: uint netlink attribute */ static inline s64 nla_get_sint(const struct nlattr *nla) { if (nla_len(nla) == sizeof(s32)) return nla_get_s32(nla); return nla_get_s64(nla); } /** * nla_get_sint_default - return payload of sint attribute or default * @nla: sint netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline s64 nla_get_sint_default(const struct nlattr *nla, s64 defvalue) { if (!nla) return defvalue; return nla_get_sint(nla); } /** * nla_get_flag - return payload of flag attribute * @nla: flag netlink attribute */ static inline int nla_get_flag(const struct nlattr *nla) { return !!nla; } /** * nla_get_msecs - return payload of msecs attribute * @nla: msecs netlink attribute * * Returns: the number of milliseconds in jiffies. */ static inline unsigned long nla_get_msecs(const struct nlattr *nla) { u64 msecs = nla_get_u64(nla); return msecs_to_jiffies((unsigned long) msecs); } /** * nla_get_msecs_default - return payload of msecs attribute or default * @nla: msecs netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline unsigned long nla_get_msecs_default(const struct nlattr *nla, unsigned long defvalue) { if (!nla) return defvalue; return nla_get_msecs(nla); } /** * nla_get_in_addr - return payload of IPv4 address attribute * @nla: IPv4 address netlink attribute */ static inline __be32 nla_get_in_addr(const struct nlattr *nla) { return *(__be32 *) nla_data(nla); } /** * nla_get_in_addr_default - return payload of be32 attribute or default * @nla: IPv4 address netlink attribute, may be %NULL * @defvalue: default value to use if @nla is %NULL * * Return: the value of the attribute, or the default value if not present */ static inline __be32 nla_get_in_addr_default(const struct nlattr *nla, __be32 defvalue) { if (!nla) return defvalue; return nla_get_in_addr(nla); } /** * nla_get_in6_addr - return payload of IPv6 address attribute * @nla: IPv6 address netlink attribute */ static inline struct in6_addr nla_get_in6_addr(const struct nlattr *nla) { struct in6_addr tmp; nla_memcpy(&tmp, nla, sizeof(tmp)); return tmp; } /** * nla_get_bitfield32 - return payload of 32 bitfield attribute * @nla: nla_bitfield32 attribute */ static inline struct nla_bitfield32 nla_get_bitfield32(const struct nlattr *nla) { struct nla_bitfield32 tmp; nla_memcpy(&tmp, nla, sizeof(tmp)); return tmp; } /** * nla_memdup - duplicate attribute memory (kmemdup) * @src: netlink attribute to duplicate from * @gfp: GFP mask */ static inline void *nla_memdup_noprof(const struct nlattr *src, gfp_t gfp) { return kmemdup_noprof(nla_data(src), nla_len(src), gfp); } #define nla_memdup(...) alloc_hooks(nla_memdup_noprof(__VA_ARGS__)) /** * nla_nest_start_noflag - Start a new level of nested attributes * @skb: socket buffer to add attributes to * @attrtype: attribute type of container * * This function exists for backward compatibility to use in APIs which never * marked their nest attributes with NLA_F_NESTED flag. New APIs should use * nla_nest_start() which sets the flag. * * Returns: the container attribute or NULL on error */ static inline struct nlattr *nla_nest_start_noflag(struct sk_buff *skb, int attrtype) { struct nlattr *start = (struct nlattr *)skb_tail_pointer(skb); if (nla_put(skb, attrtype, 0, NULL) < 0) return NULL; return start; } /** * nla_nest_start - Start a new level of nested attributes, with NLA_F_NESTED * @skb: socket buffer to add attributes to * @attrtype: attribute type of container * * Unlike nla_nest_start_noflag(), mark the nest attribute with NLA_F_NESTED * flag. This is the preferred function to use in new code. * * Returns: the container attribute or NULL on error */ static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype) { return nla_nest_start_noflag(skb, attrtype | NLA_F_NESTED); } /** * nla_nest_end - Finalize nesting of attributes * @skb: socket buffer the attributes are stored in * @start: container attribute * * Corrects the container attribute header to include the all * appended attributes. * * Returns: the total data length of the skb. */ static inline int nla_nest_end(struct sk_buff *skb, struct nlattr *start) { start->nla_len = skb_tail_pointer(skb) - (unsigned char *)start; return skb->len; } /** * nla_nest_cancel - Cancel nesting of attributes * @skb: socket buffer the message is stored in * @start: container attribute * * Removes the container attribute and including all nested * attributes. Returns -EMSGSIZE */ static inline void nla_nest_cancel(struct sk_buff *skb, struct nlattr *start) { nlmsg_trim(skb, start); } /** * nla_put_empty_nest - Create an empty nest * @skb: socket buffer the message is stored in * @attrtype: attribute type of the container * * This function is a helper for creating empty nests. * * Returns: 0 when successful or -EMSGSIZE on failure. */ static inline int nla_put_empty_nest(struct sk_buff *skb, int attrtype) { return nla_nest_start(skb, attrtype) ? 0 : -EMSGSIZE; } /** * __nla_validate_nested - Validate a stream of nested attributes * @start: container attribute * @maxtype: maximum attribute type to be expected * @policy: validation policy * @validate: validation strictness * @extack: extended ACK report struct * * Validates all attributes in the nested attribute stream against the * specified policy. Attributes with a type exceeding maxtype will be * ignored. See documentation of struct nla_policy for more details. * * Returns: 0 on success or a negative error code. */ static inline int __nla_validate_nested(const struct nlattr *start, int maxtype, const struct nla_policy *policy, unsigned int validate, struct netlink_ext_ack *extack) { return __nla_validate(nla_data(start), nla_len(start), maxtype, policy, validate, extack); } static inline int nla_validate_nested(const struct nlattr *start, int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_validate_nested(start, maxtype, policy, NL_VALIDATE_STRICT, extack); } static inline int nla_validate_nested_deprecated(const struct nlattr *start, int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nla_validate_nested(start, maxtype, policy, NL_VALIDATE_LIBERAL, extack); } /** * nla_need_padding_for_64bit - test 64-bit alignment of the next attribute * @skb: socket buffer the message is stored in * * Return: true if padding is needed to align the next attribute (nla_data()) to * a 64-bit aligned area. */ static inline bool nla_need_padding_for_64bit(struct sk_buff *skb) { #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS /* The nlattr header is 4 bytes in size, that's why we test * if the skb->data _is_ aligned. A NOP attribute, plus * nlattr header for next attribute, will make nla_data() * 8-byte aligned. */ if (IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8)) return true; #endif return false; } /** * nla_align_64bit - 64-bit align the nla_data() of next attribute * @skb: socket buffer the message is stored in * @padattr: attribute type for the padding * * Conditionally emit a padding netlink attribute in order to make * the next attribute we emit have a 64-bit aligned nla_data() area. * This will only be done in architectures which do not have * CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS defined. * * Returns: zero on success or a negative error code. */ static inline int nla_align_64bit(struct sk_buff *skb, int padattr) { if (nla_need_padding_for_64bit(skb) && !nla_reserve(skb, padattr, 0)) return -EMSGSIZE; return 0; } /** * nla_total_size_64bit - total length of attribute including padding * @payload: length of payload */ static inline int nla_total_size_64bit(int payload) { return NLA_ALIGN(nla_attr_size(payload)) #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS + NLA_ALIGN(nla_attr_size(0)) #endif ; } /** * nla_for_each_attr - iterate over a stream of attributes * @pos: loop counter, set to current attribute * @head: head of attribute stream * @len: length of attribute stream * @rem: initialized to len, holds bytes currently remaining in stream */ #define nla_for_each_attr(pos, head, len, rem) \ for (pos = head, rem = len; \ nla_ok(pos, rem); \ pos = nla_next(pos, &(rem))) /** * nla_for_each_attr_type - iterate over a stream of attributes * @pos: loop counter, set to current attribute * @type: required attribute type for @pos * @head: head of attribute stream * @len: length of attribute stream * @rem: initialized to len, holds bytes currently remaining in stream */ #define nla_for_each_attr_type(pos, type, head, len, rem) \ nla_for_each_attr(pos, head, len, rem) \ if (nla_type(pos) == type) /** * nla_for_each_nested - iterate over nested attributes * @pos: loop counter, set to current attribute * @nla: attribute containing the nested attributes * @rem: initialized to len, holds bytes currently remaining in stream */ #define nla_for_each_nested(pos, nla, rem) \ nla_for_each_attr(pos, nla_data(nla), nla_len(nla), rem) /** * nla_for_each_nested_type - iterate over nested attributes * @pos: loop counter, set to current attribute * @type: required attribute type for @pos * @nla: attribute containing the nested attributes * @rem: initialized to len, holds bytes currently remaining in stream */ #define nla_for_each_nested_type(pos, type, nla, rem) \ nla_for_each_nested(pos, nla, rem) \ if (nla_type(pos) == type) /** * nla_is_last - Test if attribute is last in stream * @nla: attribute to test * @rem: bytes remaining in stream */ static inline bool nla_is_last(const struct nlattr *nla, int rem) { return nla->nla_len == rem; } void nla_get_range_unsigned(const struct nla_policy *pt, struct netlink_range_validation *range); void nla_get_range_signed(const struct nla_policy *pt, struct netlink_range_validation_signed *range); struct netlink_policy_dump_state; int netlink_policy_dump_add_policy(struct netlink_policy_dump_state **pstate, const struct nla_policy *policy, unsigned int maxtype); int netlink_policy_dump_get_policy_idx(struct netlink_policy_dump_state *state, const struct nla_policy *policy, unsigned int maxtype); bool netlink_policy_dump_loop(struct netlink_policy_dump_state *state); int netlink_policy_dump_write(struct sk_buff *skb, struct netlink_policy_dump_state *state); int netlink_policy_dump_attr_size_estimate(const struct nla_policy *pt); int netlink_policy_dump_write_attr(struct sk_buff *skb, const struct nla_policy *pt, int nestattr); void netlink_policy_dump_free(struct netlink_policy_dump_state *state); #endif |
| 140 142 142 142 141 142 141 141 142 141 142 142 146 119 142 142 146 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 | // SPDX-License-Identifier: GPL-2.0-only /* * File: pn_dev.c * * Phonet network device * * Copyright (C) 2008 Nokia Corporation. * * Authors: Sakari Ailus <sakari.ailus@nokia.com> * Rémi Denis-Courmont */ #include <linux/kernel.h> #include <linux/net.h> #include <linux/slab.h> #include <linux/netdevice.h> #include <linux/phonet.h> #include <linux/proc_fs.h> #include <linux/if_arp.h> #include <net/sock.h> #include <net/netns/generic.h> #include <net/phonet/pn_dev.h> struct phonet_routes { spinlock_t lock; struct net_device __rcu *table[64]; }; struct phonet_net { struct phonet_device_list pndevs; struct phonet_routes routes; }; static unsigned int phonet_net_id __read_mostly; static struct phonet_net *phonet_pernet(struct net *net) { return net_generic(net, phonet_net_id); } struct phonet_device_list *phonet_device_list(struct net *net) { struct phonet_net *pnn = phonet_pernet(net); return &pnn->pndevs; } /* Allocate new Phonet device. */ static struct phonet_device *__phonet_device_alloc(struct net_device *dev) { struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev)); struct phonet_device *pnd = kmalloc(sizeof(*pnd), GFP_ATOMIC); if (pnd == NULL) return NULL; pnd->netdev = dev; bitmap_zero(pnd->addrs, 64); lockdep_assert_held(&pndevs->lock); list_add_rcu(&pnd->list, &pndevs->list); return pnd; } static struct phonet_device *__phonet_get(struct net_device *dev) { struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev)); struct phonet_device *pnd; lockdep_assert_held(&pndevs->lock); list_for_each_entry(pnd, &pndevs->list, list) { if (pnd->netdev == dev) return pnd; } return NULL; } static struct phonet_device *__phonet_get_rcu(struct net_device *dev) { struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev)); struct phonet_device *pnd; list_for_each_entry_rcu(pnd, &pndevs->list, list) { if (pnd->netdev == dev) return pnd; } return NULL; } static void phonet_device_destroy(struct net_device *dev) { struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev)); struct phonet_device *pnd; ASSERT_RTNL(); spin_lock(&pndevs->lock); pnd = __phonet_get(dev); if (pnd) list_del_rcu(&pnd->list); spin_unlock(&pndevs->lock); if (pnd) { struct net *net = dev_net(dev); u32 ifindex = dev->ifindex; u8 addr; for_each_set_bit(addr, pnd->addrs, 64) phonet_address_notify(net, RTM_DELADDR, ifindex, addr); kfree(pnd); } } struct net_device *phonet_device_get(struct net *net) { struct phonet_device_list *pndevs = phonet_device_list(net); struct phonet_device *pnd; struct net_device *dev = NULL; rcu_read_lock(); list_for_each_entry_rcu(pnd, &pndevs->list, list) { dev = pnd->netdev; BUG_ON(!dev); if ((dev->reg_state == NETREG_REGISTERED) && ((pnd->netdev->flags & IFF_UP)) == IFF_UP) break; dev = NULL; } dev_hold(dev); rcu_read_unlock(); return dev; } int phonet_address_add(struct net_device *dev, u8 addr) { struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev)); struct phonet_device *pnd; int err = 0; spin_lock(&pndevs->lock); /* Find or create Phonet-specific device data */ pnd = __phonet_get(dev); if (pnd == NULL) pnd = __phonet_device_alloc(dev); if (unlikely(pnd == NULL)) err = -ENOMEM; else if (test_and_set_bit(addr >> 2, pnd->addrs)) err = -EEXIST; spin_unlock(&pndevs->lock); return err; } int phonet_address_del(struct net_device *dev, u8 addr) { struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev)); struct phonet_device *pnd; int err = 0; spin_lock(&pndevs->lock); pnd = __phonet_get(dev); if (!pnd || !test_and_clear_bit(addr >> 2, pnd->addrs)) { err = -EADDRNOTAVAIL; pnd = NULL; } else if (bitmap_empty(pnd->addrs, 64)) list_del_rcu(&pnd->list); else pnd = NULL; spin_unlock(&pndevs->lock); if (pnd) kfree_rcu(pnd, rcu); return err; } /* Gets a source address toward a destination, through a interface. */ u8 phonet_address_get(struct net_device *dev, u8 daddr) { struct phonet_device *pnd; u8 saddr; rcu_read_lock(); pnd = __phonet_get_rcu(dev); if (pnd) { BUG_ON(bitmap_empty(pnd->addrs, 64)); /* Use same source address as destination, if possible */ if (test_bit(daddr >> 2, pnd->addrs)) saddr = daddr; else saddr = find_first_bit(pnd->addrs, 64) << 2; } else saddr = PN_NO_ADDR; rcu_read_unlock(); if (saddr == PN_NO_ADDR) { /* Fallback to another device */ struct net_device *def_dev; def_dev = phonet_device_get(dev_net(dev)); if (def_dev) { if (def_dev != dev) saddr = phonet_address_get(def_dev, daddr); dev_put(def_dev); } } return saddr; } int phonet_address_lookup(struct net *net, u8 addr) { struct phonet_device_list *pndevs = phonet_device_list(net); struct phonet_device *pnd; int err = -EADDRNOTAVAIL; rcu_read_lock(); list_for_each_entry_rcu(pnd, &pndevs->list, list) { /* Don't allow unregistering devices! */ if ((pnd->netdev->reg_state != NETREG_REGISTERED) || ((pnd->netdev->flags & IFF_UP)) != IFF_UP) continue; if (test_bit(addr >> 2, pnd->addrs)) { err = 0; goto found; } } found: rcu_read_unlock(); return err; } /* automatically configure a Phonet device, if supported */ static int phonet_device_autoconf(struct net_device *dev) { struct if_phonet_req req; int ret; if (!dev->netdev_ops->ndo_siocdevprivate) return -EOPNOTSUPP; ret = dev->netdev_ops->ndo_siocdevprivate(dev, (struct ifreq *)&req, NULL, SIOCPNGAUTOCONF); if (ret < 0) return ret; ASSERT_RTNL(); ret = phonet_address_add(dev, req.ifr_phonet_autoconf.device); if (ret) return ret; phonet_address_notify(dev_net(dev), RTM_NEWADDR, dev->ifindex, req.ifr_phonet_autoconf.device); return 0; } static void phonet_route_autodel(struct net_device *dev) { struct net *net = dev_net(dev); DECLARE_BITMAP(deleted, 64); u32 ifindex = dev->ifindex; struct phonet_net *pnn; unsigned int i; pnn = phonet_pernet(net); /* Remove left-over Phonet routes */ bitmap_zero(deleted, 64); spin_lock(&pnn->routes.lock); for (i = 0; i < 64; i++) { if (rcu_access_pointer(pnn->routes.table[i]) == dev) { RCU_INIT_POINTER(pnn->routes.table[i], NULL); set_bit(i, deleted); } } spin_unlock(&pnn->routes.lock); if (bitmap_empty(deleted, 64)) return; /* short-circuit RCU */ synchronize_rcu(); for_each_set_bit(i, deleted, 64) { rtm_phonet_notify(net, RTM_DELROUTE, ifindex, i); dev_put(dev); } } /* notify Phonet of device events */ static int phonet_device_notify(struct notifier_block *me, unsigned long what, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); switch (what) { case NETDEV_REGISTER: if (dev->type == ARPHRD_PHONET) phonet_device_autoconf(dev); break; case NETDEV_UNREGISTER: phonet_device_destroy(dev); phonet_route_autodel(dev); break; } return 0; } static struct notifier_block phonet_device_notifier = { .notifier_call = phonet_device_notify, .priority = 0, }; /* Per-namespace Phonet devices handling */ static int __net_init phonet_init_net(struct net *net) { struct phonet_net *pnn = phonet_pernet(net); if (!proc_create_net("phonet", 0, net->proc_net, &pn_sock_seq_ops, sizeof(struct seq_net_private))) return -ENOMEM; INIT_LIST_HEAD(&pnn->pndevs.list); spin_lock_init(&pnn->pndevs.lock); spin_lock_init(&pnn->routes.lock); return 0; } static void __net_exit phonet_exit_net(struct net *net) { struct phonet_net *pnn = phonet_pernet(net); remove_proc_entry("phonet", net->proc_net); WARN_ON_ONCE(!list_empty(&pnn->pndevs.list)); } static struct pernet_operations phonet_net_ops = { .init = phonet_init_net, .exit = phonet_exit_net, .id = &phonet_net_id, .size = sizeof(struct phonet_net), }; /* Initialize Phonet devices list */ int __init phonet_device_init(void) { int err = register_pernet_subsys(&phonet_net_ops); if (err) return err; proc_create_net("pnresource", 0, init_net.proc_net, &pn_res_seq_ops, sizeof(struct seq_net_private)); register_netdevice_notifier(&phonet_device_notifier); err = phonet_netlink_register(); if (err) phonet_device_exit(); return err; } void phonet_device_exit(void) { rtnl_unregister_all(PF_PHONET); unregister_netdevice_notifier(&phonet_device_notifier); unregister_pernet_subsys(&phonet_net_ops); remove_proc_entry("pnresource", init_net.proc_net); } int phonet_route_add(struct net_device *dev, u8 daddr) { struct phonet_net *pnn = phonet_pernet(dev_net(dev)); struct phonet_routes *routes = &pnn->routes; int err = -EEXIST; daddr = daddr >> 2; spin_lock(&routes->lock); if (routes->table[daddr] == NULL) { rcu_assign_pointer(routes->table[daddr], dev); dev_hold(dev); err = 0; } spin_unlock(&routes->lock); return err; } int phonet_route_del(struct net_device *dev, u8 daddr) { struct phonet_net *pnn = phonet_pernet(dev_net(dev)); struct phonet_routes *routes = &pnn->routes; daddr = daddr >> 2; spin_lock(&routes->lock); if (rcu_access_pointer(routes->table[daddr]) == dev) RCU_INIT_POINTER(routes->table[daddr], NULL); else dev = NULL; spin_unlock(&routes->lock); if (!dev) return -ENOENT; /* Note : our caller must call synchronize_rcu() and dev_put(dev) */ return 0; } struct net_device *phonet_route_get_rcu(struct net *net, u8 daddr) { struct phonet_net *pnn = phonet_pernet(net); struct phonet_routes *routes = &pnn->routes; struct net_device *dev; daddr >>= 2; dev = rcu_dereference(routes->table[daddr]); return dev; } struct net_device *phonet_route_output(struct net *net, u8 daddr) { struct phonet_net *pnn = phonet_pernet(net); struct phonet_routes *routes = &pnn->routes; struct net_device *dev; daddr >>= 2; rcu_read_lock(); dev = rcu_dereference(routes->table[daddr]); dev_hold(dev); rcu_read_unlock(); if (!dev) dev = phonet_device_get(net); /* Default route */ return dev; } |
| 3132 3127 3129 3132 3129 3125 3216 3210 3216 3213 3211 3209 3205 3208 3208 3212 3215 3209 3206 3207 3208 3206 3210 3209 3207 3216 3216 3204 3216 3212 3207 3209 3210 3216 3209 3216 3211 3212 3205 3216 3208 3213 3133 3130 3130 3128 3127 3131 3138 3138 3131 3134 3201 3208 3210 3206 3209 3212 3208 3128 3134 3133 3133 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 | // SPDX-License-Identifier: GPL-2.0 /* * fs/sysfs/group.c - Operations for adding/removing multiple files at once. * * Copyright (c) 2003 Patrick Mochel * Copyright (c) 2003 Open Source Development Lab * Copyright (c) 2013 Greg Kroah-Hartman * Copyright (c) 2013 The Linux Foundation */ #include <linux/kobject.h> #include <linux/module.h> #include <linux/dcache.h> #include <linux/namei.h> #include <linux/err.h> #include <linux/fs.h> #include "sysfs.h" static void remove_files(struct kernfs_node *parent, const struct attribute_group *grp) { struct attribute *const *attr; const struct bin_attribute *const *bin_attr; if (grp->attrs) for (attr = grp->attrs; *attr; attr++) kernfs_remove_by_name(parent, (*attr)->name); if (grp->bin_attrs) for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) kernfs_remove_by_name(parent, (*bin_attr)->attr.name); } static umode_t __first_visible(const struct attribute_group *grp, struct kobject *kobj) { if (grp->attrs && grp->attrs[0] && grp->is_visible) return grp->is_visible(kobj, grp->attrs[0], 0); if (grp->bin_attrs && grp->bin_attrs[0] && grp->is_bin_visible) return grp->is_bin_visible(kobj, grp->bin_attrs[0], 0); return 0; } static int create_files(struct kernfs_node *parent, struct kobject *kobj, kuid_t uid, kgid_t gid, const struct attribute_group *grp, int update) { struct attribute *const *attr; const struct bin_attribute *const *bin_attr; int error = 0, i; if (grp->attrs) { for (i = 0, attr = grp->attrs; *attr && !error; i++, attr++) { umode_t mode = (*attr)->mode; /* * In update mode, we're changing the permissions or * visibility. Do this by first removing then * re-adding (if required) the file. */ if (update) kernfs_remove_by_name(parent, (*attr)->name); if (grp->is_visible) { mode = grp->is_visible(kobj, *attr, i); mode &= ~SYSFS_GROUP_INVISIBLE; if (!mode) continue; } WARN(mode & ~(SYSFS_PREALLOC | 0664), "Attribute %s: Invalid permissions 0%o\n", (*attr)->name, mode); mode &= SYSFS_PREALLOC | 0664; error = sysfs_add_file_mode_ns(parent, *attr, mode, uid, gid, NULL); if (unlikely(error)) break; } if (error) { remove_files(parent, grp); goto exit; } } if (grp->bin_attrs) { for (i = 0, bin_attr = grp->bin_attrs; *bin_attr; i++, bin_attr++) { umode_t mode = (*bin_attr)->attr.mode; size_t size = (*bin_attr)->size; if (update) kernfs_remove_by_name(parent, (*bin_attr)->attr.name); if (grp->is_bin_visible) { mode = grp->is_bin_visible(kobj, *bin_attr, i); mode &= ~SYSFS_GROUP_INVISIBLE; if (!mode) continue; } if (grp->bin_size) size = grp->bin_size(kobj, *bin_attr, i); WARN(mode & ~(SYSFS_PREALLOC | 0664), "Attribute %s: Invalid permissions 0%o\n", (*bin_attr)->attr.name, mode); mode &= SYSFS_PREALLOC | 0664; error = sysfs_add_bin_file_mode_ns(parent, *bin_attr, mode, size, uid, gid, NULL); if (error) break; } if (error) remove_files(parent, grp); } exit: return error; } static int internal_create_group(struct kobject *kobj, int update, const struct attribute_group *grp) { struct kernfs_node *kn; kuid_t uid; kgid_t gid; int error; if (WARN_ON(!kobj || (!update && !kobj->sd))) return -EINVAL; /* Updates may happen before the object has been instantiated */ if (unlikely(update && !kobj->sd)) return -EINVAL; if (!grp->attrs && !grp->bin_attrs) { pr_debug("sysfs: (bin_)attrs not set by subsystem for group: %s/%s, skipping\n", kobj->name, grp->name ?: ""); return 0; } kobject_get_ownership(kobj, &uid, &gid); if (grp->name) { umode_t mode = __first_visible(grp, kobj); if (mode & SYSFS_GROUP_INVISIBLE) mode = 0; else mode = S_IRWXU | S_IRUGO | S_IXUGO; if (update) { kn = kernfs_find_and_get(kobj->sd, grp->name); if (!kn) { pr_debug("attr grp %s/%s not created yet\n", kobj->name, grp->name); /* may have been invisible prior to this update */ update = 0; } else if (!mode) { sysfs_remove_group(kobj, grp); kernfs_put(kn); return 0; } } if (!update) { if (!mode) return 0; kn = kernfs_create_dir_ns(kobj->sd, grp->name, mode, uid, gid, kobj, NULL); if (IS_ERR(kn)) { if (PTR_ERR(kn) == -EEXIST) sysfs_warn_dup(kobj->sd, grp->name); return PTR_ERR(kn); } } } else { kn = kobj->sd; } kernfs_get(kn); error = create_files(kn, kobj, uid, gid, grp, update); if (error) { if (grp->name) kernfs_remove(kn); } kernfs_put(kn); if (grp->name && update) kernfs_put(kn); return error; } /** * sysfs_create_group - given a directory kobject, create an attribute group * @kobj: The kobject to create the group on * @grp: The attribute group to create * * This function creates a group for the first time. It will explicitly * warn and error if any of the attribute files being created already exist. * * Returns 0 on success or error code on failure. */ int sysfs_create_group(struct kobject *kobj, const struct attribute_group *grp) { return internal_create_group(kobj, 0, grp); } EXPORT_SYMBOL_GPL(sysfs_create_group); static int internal_create_groups(struct kobject *kobj, int update, const struct attribute_group **groups) { int error = 0; int i; if (!groups) return 0; for (i = 0; groups[i]; i++) { error = internal_create_group(kobj, update, groups[i]); if (error) { while (--i >= 0) sysfs_remove_group(kobj, groups[i]); break; } } return error; } /** * sysfs_create_groups - given a directory kobject, create a bunch of attribute groups * @kobj: The kobject to create the group on * @groups: The attribute groups to create, NULL terminated * * This function creates a bunch of attribute groups. If an error occurs when * creating a group, all previously created groups will be removed, unwinding * everything back to the original state when this function was called. * It will explicitly warn and error if any of the attribute files being * created already exist. * * Returns 0 on success or error code from sysfs_create_group on failure. */ int sysfs_create_groups(struct kobject *kobj, const struct attribute_group **groups) { return internal_create_groups(kobj, 0, groups); } EXPORT_SYMBOL_GPL(sysfs_create_groups); /** * sysfs_update_groups - given a directory kobject, create a bunch of attribute groups * @kobj: The kobject to update the group on * @groups: The attribute groups to update, NULL terminated * * This function update a bunch of attribute groups. If an error occurs when * updating a group, all previously updated groups will be removed together * with already existing (not updated) attributes. * * Returns 0 on success or error code from sysfs_update_group on failure. */ int sysfs_update_groups(struct kobject *kobj, const struct attribute_group **groups) { return internal_create_groups(kobj, 1, groups); } EXPORT_SYMBOL_GPL(sysfs_update_groups); /** * sysfs_update_group - given a directory kobject, update an attribute group * @kobj: The kobject to update the group on * @grp: The attribute group to update * * This function updates an attribute group. Unlike * sysfs_create_group(), it will explicitly not warn or error if any * of the attribute files being created already exist. Furthermore, * if the visibility of the files has changed through the is_visible() * callback, it will update the permissions and add or remove the * relevant files. Changing a group's name (subdirectory name under * kobj's directory in sysfs) is not allowed. * * The primary use for this function is to call it after making a change * that affects group visibility. * * Returns 0 on success or error code on failure. */ int sysfs_update_group(struct kobject *kobj, const struct attribute_group *grp) { return internal_create_group(kobj, 1, grp); } EXPORT_SYMBOL_GPL(sysfs_update_group); /** * sysfs_remove_group: remove a group from a kobject * @kobj: kobject to remove the group from * @grp: group to remove * * This function removes a group of attributes from a kobject. The attributes * previously have to have been created for this group, otherwise it will fail. */ void sysfs_remove_group(struct kobject *kobj, const struct attribute_group *grp) { struct kernfs_node *parent = kobj->sd; struct kernfs_node *kn; if (grp->name) { kn = kernfs_find_and_get(parent, grp->name); if (!kn) { pr_debug("sysfs group '%s' not found for kobject '%s'\n", grp->name, kobject_name(kobj)); return; } } else { kn = parent; kernfs_get(kn); } remove_files(kn, grp); if (grp->name) kernfs_remove(kn); kernfs_put(kn); } EXPORT_SYMBOL_GPL(sysfs_remove_group); /** * sysfs_remove_groups - remove a list of groups * * @kobj: The kobject for the groups to be removed from * @groups: NULL terminated list of groups to be removed * * If groups is not NULL, remove the specified groups from the kobject. */ void sysfs_remove_groups(struct kobject *kobj, const struct attribute_group **groups) { int i; if (!groups) return; for (i = 0; groups[i]; i++) sysfs_remove_group(kobj, groups[i]); } EXPORT_SYMBOL_GPL(sysfs_remove_groups); /** * sysfs_merge_group - merge files into a pre-existing named attribute group. * @kobj: The kobject containing the group. * @grp: The files to create and the attribute group they belong to. * * This function returns an error if the group doesn't exist, the .name field is * NULL or any of the files already exist in that group, in which case none of * the new files are created. */ int sysfs_merge_group(struct kobject *kobj, const struct attribute_group *grp) { struct kernfs_node *parent; kuid_t uid; kgid_t gid; int error = 0; struct attribute *const *attr; int i; parent = kernfs_find_and_get(kobj->sd, grp->name); if (!parent) return -ENOENT; kobject_get_ownership(kobj, &uid, &gid); for ((i = 0, attr = grp->attrs); *attr && !error; (++i, ++attr)) error = sysfs_add_file_mode_ns(parent, *attr, (*attr)->mode, uid, gid, NULL); if (error) { while (--i >= 0) kernfs_remove_by_name(parent, (*--attr)->name); } kernfs_put(parent); return error; } EXPORT_SYMBOL_GPL(sysfs_merge_group); /** * sysfs_unmerge_group - remove files from a pre-existing named attribute group. * @kobj: The kobject containing the group. * @grp: The files to remove and the attribute group they belong to. */ void sysfs_unmerge_group(struct kobject *kobj, const struct attribute_group *grp) { struct kernfs_node *parent; struct attribute *const *attr; parent = kernfs_find_and_get(kobj->sd, grp->name); if (parent) { for (attr = grp->attrs; *attr; ++attr) kernfs_remove_by_name(parent, (*attr)->name); kernfs_put(parent); } } EXPORT_SYMBOL_GPL(sysfs_unmerge_group); /** * sysfs_add_link_to_group - add a symlink to an attribute group. * @kobj: The kobject containing the group. * @group_name: The name of the group. * @target: The target kobject of the symlink to create. * @link_name: The name of the symlink to create. */ int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, struct kobject *target, const char *link_name) { struct kernfs_node *parent; int error = 0; parent = kernfs_find_and_get(kobj->sd, group_name); if (!parent) return -ENOENT; error = sysfs_create_link_sd(parent, target, link_name); kernfs_put(parent); return error; } EXPORT_SYMBOL_GPL(sysfs_add_link_to_group); /** * sysfs_remove_link_from_group - remove a symlink from an attribute group. * @kobj: The kobject containing the group. * @group_name: The name of the group. * @link_name: The name of the symlink to remove. */ void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, const char *link_name) { struct kernfs_node *parent; parent = kernfs_find_and_get(kobj->sd, group_name); if (parent) { kernfs_remove_by_name(parent, link_name); kernfs_put(parent); } } EXPORT_SYMBOL_GPL(sysfs_remove_link_from_group); /** * compat_only_sysfs_link_entry_to_kobj - add a symlink to a kobject pointing * to a group or an attribute * @kobj: The kobject containing the group. * @target_kobj: The target kobject. * @target_name: The name of the target group or attribute. * @symlink_name: The name of the symlink file (target_name will be * considered if symlink_name is NULL). */ int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, struct kobject *target_kobj, const char *target_name, const char *symlink_name) { struct kernfs_node *target; struct kernfs_node *entry; struct kernfs_node *link; /* * We don't own @target_kobj and it may be removed at any time. * Synchronize using sysfs_symlink_target_lock. See sysfs_remove_dir() * for details. */ spin_lock(&sysfs_symlink_target_lock); target = target_kobj->sd; if (target) kernfs_get(target); spin_unlock(&sysfs_symlink_target_lock); if (!target) return -ENOENT; entry = kernfs_find_and_get(target, target_name); if (!entry) { kernfs_put(target); return -ENOENT; } if (!symlink_name) symlink_name = target_name; link = kernfs_create_link(kobj->sd, symlink_name, entry); if (PTR_ERR(link) == -EEXIST) sysfs_warn_dup(kobj->sd, symlink_name); kernfs_put(entry); kernfs_put(target); return PTR_ERR_OR_ZERO(link); } EXPORT_SYMBOL_GPL(compat_only_sysfs_link_entry_to_kobj); static int sysfs_group_attrs_change_owner(struct kernfs_node *grp_kn, const struct attribute_group *grp, struct iattr *newattrs) { struct kernfs_node *kn; int error; if (grp->attrs) { struct attribute *const *attr; for (attr = grp->attrs; *attr; attr++) { kn = kernfs_find_and_get(grp_kn, (*attr)->name); if (!kn) return -ENOENT; error = kernfs_setattr(kn, newattrs); kernfs_put(kn); if (error) return error; } } if (grp->bin_attrs) { const struct bin_attribute *const *bin_attr; for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) { kn = kernfs_find_and_get(grp_kn, (*bin_attr)->attr.name); if (!kn) return -ENOENT; error = kernfs_setattr(kn, newattrs); kernfs_put(kn); if (error) return error; } } return 0; } /** * sysfs_group_change_owner - change owner of an attribute group. * @kobj: The kobject containing the group. * @grp: The attribute group. * @kuid: new owner's kuid * @kgid: new owner's kgid * * Returns 0 on success or error code on failure. */ int sysfs_group_change_owner(struct kobject *kobj, const struct attribute_group *grp, kuid_t kuid, kgid_t kgid) { struct kernfs_node *grp_kn; int error; struct iattr newattrs = { .ia_valid = ATTR_UID | ATTR_GID, .ia_uid = kuid, .ia_gid = kgid, }; if (!kobj->state_in_sysfs) return -EINVAL; if (grp->name) { grp_kn = kernfs_find_and_get(kobj->sd, grp->name); } else { kernfs_get(kobj->sd); grp_kn = kobj->sd; } if (!grp_kn) return -ENOENT; error = kernfs_setattr(grp_kn, &newattrs); if (!error) error = sysfs_group_attrs_change_owner(grp_kn, grp, &newattrs); kernfs_put(grp_kn); return error; } EXPORT_SYMBOL_GPL(sysfs_group_change_owner); /** * sysfs_groups_change_owner - change owner of a set of attribute groups. * @kobj: The kobject containing the groups. * @groups: The attribute groups. * @kuid: new owner's kuid * @kgid: new owner's kgid * * Returns 0 on success or error code on failure. */ int sysfs_groups_change_owner(struct kobject *kobj, const struct attribute_group **groups, kuid_t kuid, kgid_t kgid) { int error = 0, i; if (!kobj->state_in_sysfs) return -EINVAL; if (!groups) return 0; for (i = 0; groups[i]; i++) { error = sysfs_group_change_owner(kobj, groups[i], kuid, kgid); if (error) break; } return error; } EXPORT_SYMBOL_GPL(sysfs_groups_change_owner); |
| 186 184 186 16 16 16 16 16 186 16 186 16 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Linux I2C core OF support code * * Copyright (C) 2008 Jochen Friedrich <jochen@scram.de> * based on a previous patch from Jon Smirl <jonsmirl@gmail.com> * * Copyright (C) 2013, 2018 Wolfram Sang <wsa@kernel.org> */ #include <dt-bindings/i2c/i2c.h> #include <linux/device.h> #include <linux/err.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/sysfs.h> #include "i2c-core.h" int of_i2c_get_board_info(struct device *dev, struct device_node *node, struct i2c_board_info *info) { u32 addr; int ret; memset(info, 0, sizeof(*info)); if (of_alias_from_compatible(node, info->type, sizeof(info->type)) < 0) { dev_err(dev, "of_i2c: modalias failure on %pOF\n", node); return -EINVAL; } ret = of_property_read_u32(node, "reg", &addr); if (ret) { dev_err(dev, "of_i2c: invalid reg on %pOF\n", node); return ret; } if (addr & I2C_TEN_BIT_ADDRESS) { addr &= ~I2C_TEN_BIT_ADDRESS; info->flags |= I2C_CLIENT_TEN; } if (addr & I2C_OWN_SLAVE_ADDRESS) { addr &= ~I2C_OWN_SLAVE_ADDRESS; info->flags |= I2C_CLIENT_SLAVE; } info->addr = addr; info->fwnode = of_fwnode_handle(node); if (of_property_read_bool(node, "host-notify")) info->flags |= I2C_CLIENT_HOST_NOTIFY; if (of_property_read_bool(node, "wakeup-source")) info->flags |= I2C_CLIENT_WAKE; return 0; } EXPORT_SYMBOL_GPL(of_i2c_get_board_info); static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap, struct device_node *node) { struct i2c_client *client; struct i2c_board_info info; int ret; dev_dbg(&adap->dev, "of_i2c: register %pOF\n", node); ret = of_i2c_get_board_info(&adap->dev, node, &info); if (ret) return ERR_PTR(ret); client = i2c_new_client_device(adap, &info); if (IS_ERR(client)) dev_err(&adap->dev, "of_i2c: Failure registering %pOF\n", node); return client; } void of_i2c_register_devices(struct i2c_adapter *adap) { struct device_node *bus, *node; struct i2c_client *client; /* Only register child devices if the adapter has a node pointer set */ if (!adap->dev.of_node) return; dev_dbg(&adap->dev, "of_i2c: walking child nodes\n"); bus = of_get_child_by_name(adap->dev.of_node, "i2c-bus"); if (!bus) bus = of_node_get(adap->dev.of_node); for_each_available_child_of_node(bus, node) { if (of_node_test_and_set_flag(node, OF_POPULATED)) continue; client = of_i2c_register_device(adap, node); if (IS_ERR(client)) { dev_err(&adap->dev, "Failed to create I2C device for %pOF\n", node); of_node_clear_flag(node, OF_POPULATED); } } of_node_put(bus); } static const struct of_device_id* i2c_of_match_device_sysfs(const struct of_device_id *matches, struct i2c_client *client) { const char *name; for (; matches->compatible[0]; matches++) { /* * Adding devices through the i2c sysfs interface provides us * a string to match which may be compatible with the device * tree compatible strings, however with no actual of_node the * of_match_device() will not match */ if (sysfs_streq(client->name, matches->compatible)) return matches; name = strchr(matches->compatible, ','); if (!name) name = matches->compatible; else name++; if (sysfs_streq(client->name, name)) return matches; } return NULL; } const struct of_device_id *i2c_of_match_device(const struct of_device_id *matches, struct i2c_client *client) { const struct of_device_id *match; if (!(client && matches)) return NULL; match = of_match_device(matches, &client->dev); if (match) return match; return i2c_of_match_device_sysfs(matches, client); } #if IS_ENABLED(CONFIG_OF_DYNAMIC) static int of_i2c_notify(struct notifier_block *nb, unsigned long action, void *arg) { struct of_reconfig_data *rd = arg; struct i2c_adapter *adap; struct i2c_client *client; switch (of_reconfig_get_state_change(action, rd)) { case OF_RECONFIG_CHANGE_ADD: adap = of_find_i2c_adapter_by_node(rd->dn->parent); if (adap == NULL) return NOTIFY_OK; /* not for us */ if (of_node_test_and_set_flag(rd->dn, OF_POPULATED)) { put_device(&adap->dev); return NOTIFY_OK; } /* * Clear the flag before adding the device so that fw_devlink * doesn't skip adding consumers to this device. */ rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE; client = of_i2c_register_device(adap, rd->dn); if (IS_ERR(client)) { dev_err(&adap->dev, "failed to create client for '%pOF'\n", rd->dn); put_device(&adap->dev); of_node_clear_flag(rd->dn, OF_POPULATED); return notifier_from_errno(PTR_ERR(client)); } put_device(&adap->dev); break; case OF_RECONFIG_CHANGE_REMOVE: /* already depopulated? */ if (!of_node_check_flag(rd->dn, OF_POPULATED)) return NOTIFY_OK; /* find our device by node */ client = of_find_i2c_device_by_node(rd->dn); if (client == NULL) return NOTIFY_OK; /* no? not meant for us */ /* unregister takes one ref away */ i2c_unregister_device(client); /* and put the reference of the find */ put_device(&client->dev); break; } return NOTIFY_OK; } struct notifier_block i2c_of_notifier = { .notifier_call = of_i2c_notify, }; #endif /* CONFIG_OF_DYNAMIC */ |
| 19 19 19 19 146 146 146 19 19 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 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1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 | // SPDX-License-Identifier: GPL-2.0-or-later /* * NetLabel Unlabeled Support * * This file defines functions for dealing with unlabeled packets for the * NetLabel system. The NetLabel system manages static and dynamic label * mappings for network protocols such as CIPSO and RIPSO. * * Author: Paul Moore <paul@paul-moore.com> */ /* * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 - 2008 */ #include <linux/types.h> #include <linux/rcupdate.h> #include <linux/list.h> #include <linux/spinlock.h> #include <linux/socket.h> #include <linux/string.h> #include <linux/skbuff.h> #include <linux/audit.h> #include <linux/in.h> #include <linux/in6.h> #include <linux/ip.h> #include <linux/ipv6.h> #include <linux/notifier.h> #include <linux/netdevice.h> #include <linux/security.h> #include <linux/slab.h> #include <net/sock.h> #include <net/netlink.h> #include <net/genetlink.h> #include <net/ip.h> #include <net/ipv6.h> #include <net/net_namespace.h> #include <net/netlabel.h> #include <asm/bug.h> #include <linux/atomic.h> #include "netlabel_user.h" #include "netlabel_addrlist.h" #include "netlabel_domainhash.h" #include "netlabel_unlabeled.h" #include "netlabel_mgmt.h" /* NOTE: at present we always use init's network namespace since we don't * presently support different namespaces even though the majority of * the functions in this file are "namespace safe" */ /* The unlabeled connection hash table which we use to map network interfaces * and addresses of unlabeled packets to a user specified secid value for the * LSM. The hash table is used to lookup the network interface entry * (struct netlbl_unlhsh_iface) and then the interface entry is used to * lookup an IP address match from an ordered list. If a network interface * match can not be found in the hash table then the default entry * (netlbl_unlhsh_def) is used. The IP address entry list * (struct netlbl_unlhsh_addr) is ordered such that the entries with a * larger netmask come first. */ struct netlbl_unlhsh_tbl { struct list_head *tbl; u32 size; }; #define netlbl_unlhsh_addr4_entry(iter) \ container_of(iter, struct netlbl_unlhsh_addr4, list) struct netlbl_unlhsh_addr4 { u32 secid; struct netlbl_af4list list; struct rcu_head rcu; }; #define netlbl_unlhsh_addr6_entry(iter) \ container_of(iter, struct netlbl_unlhsh_addr6, list) struct netlbl_unlhsh_addr6 { u32 secid; struct netlbl_af6list list; struct rcu_head rcu; }; struct netlbl_unlhsh_iface { int ifindex; struct list_head addr4_list; struct list_head addr6_list; u32 valid; struct list_head list; struct rcu_head rcu; }; /* Argument struct for netlbl_unlhsh_walk() */ struct netlbl_unlhsh_walk_arg { struct netlink_callback *nl_cb; struct sk_buff *skb; u32 seq; }; /* Unlabeled connection hash table */ /* updates should be so rare that having one spinlock for the entire * hash table should be okay */ static DEFINE_SPINLOCK(netlbl_unlhsh_lock); #define netlbl_unlhsh_rcu_deref(p) \ rcu_dereference_check(p, lockdep_is_held(&netlbl_unlhsh_lock)) static struct netlbl_unlhsh_tbl __rcu *netlbl_unlhsh; static struct netlbl_unlhsh_iface __rcu *netlbl_unlhsh_def; /* Accept unlabeled packets flag */ static u8 netlabel_unlabel_acceptflg; /* NetLabel Generic NETLINK unlabeled family */ static struct genl_family netlbl_unlabel_gnl_family; /* NetLabel Netlink attribute policy */ static const struct nla_policy netlbl_unlabel_genl_policy[NLBL_UNLABEL_A_MAX + 1] = { [NLBL_UNLABEL_A_ACPTFLG] = { .type = NLA_U8 }, [NLBL_UNLABEL_A_IPV6ADDR] = { .type = NLA_BINARY, .len = sizeof(struct in6_addr) }, [NLBL_UNLABEL_A_IPV6MASK] = { .type = NLA_BINARY, .len = sizeof(struct in6_addr) }, [NLBL_UNLABEL_A_IPV4ADDR] = { .type = NLA_BINARY, .len = sizeof(struct in_addr) }, [NLBL_UNLABEL_A_IPV4MASK] = { .type = NLA_BINARY, .len = sizeof(struct in_addr) }, [NLBL_UNLABEL_A_IFACE] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, [NLBL_UNLABEL_A_SECCTX] = { .type = NLA_BINARY } }; /* * Unlabeled Connection Hash Table Functions */ /** * netlbl_unlhsh_free_iface - Frees an interface entry from the hash table * @entry: the entry's RCU field * * Description: * This function is designed to be used as a callback to the call_rcu() * function so that memory allocated to a hash table interface entry can be * released safely. It is important to note that this function does not free * the IPv4 and IPv6 address lists contained as part of an interface entry. It * is up to the rest of the code to make sure an interface entry is only freed * once it's address lists are empty. * */ static void netlbl_unlhsh_free_iface(struct rcu_head *entry) { struct netlbl_unlhsh_iface *iface; struct netlbl_af4list *iter4; struct netlbl_af4list *tmp4; #if IS_ENABLED(CONFIG_IPV6) struct netlbl_af6list *iter6; struct netlbl_af6list *tmp6; #endif /* IPv6 */ iface = container_of(entry, struct netlbl_unlhsh_iface, rcu); /* no need for locks here since we are the only one with access to this * structure */ netlbl_af4list_foreach_safe(iter4, tmp4, &iface->addr4_list) { netlbl_af4list_remove_entry(iter4); kfree(netlbl_unlhsh_addr4_entry(iter4)); } #if IS_ENABLED(CONFIG_IPV6) netlbl_af6list_foreach_safe(iter6, tmp6, &iface->addr6_list) { netlbl_af6list_remove_entry(iter6); kfree(netlbl_unlhsh_addr6_entry(iter6)); } #endif /* IPv6 */ kfree(iface); } /** * netlbl_unlhsh_hash - Hashing function for the hash table * @ifindex: the network interface/device to hash * * Description: * This is the hashing function for the unlabeled hash table, it returns the * bucket number for the given device/interface. The caller is responsible for * ensuring that the hash table is protected with either a RCU read lock or * the hash table lock. * */ static u32 netlbl_unlhsh_hash(int ifindex) { return ifindex & (netlbl_unlhsh_rcu_deref(netlbl_unlhsh)->size - 1); } /** * netlbl_unlhsh_search_iface - Search for a matching interface entry * @ifindex: the network interface * * Description: * Searches the unlabeled connection hash table and returns a pointer to the * interface entry which matches @ifindex, otherwise NULL is returned. The * caller is responsible for ensuring that the hash table is protected with * either a RCU read lock or the hash table lock. * */ static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface(int ifindex) { u32 bkt; struct list_head *bkt_list; struct netlbl_unlhsh_iface *iter; bkt = netlbl_unlhsh_hash(ifindex); bkt_list = &netlbl_unlhsh_rcu_deref(netlbl_unlhsh)->tbl[bkt]; list_for_each_entry_rcu(iter, bkt_list, list, lockdep_is_held(&netlbl_unlhsh_lock)) if (iter->valid && iter->ifindex == ifindex) return iter; return NULL; } /** * netlbl_unlhsh_add_addr4 - Add a new IPv4 address entry to the hash table * @iface: the associated interface entry * @addr: IPv4 address in network byte order * @mask: IPv4 address mask in network byte order * @secid: LSM secid value for entry * * Description: * Add a new address entry into the unlabeled connection hash table using the * interface entry specified by @iface. On success zero is returned, otherwise * a negative value is returned. * */ static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface, const struct in_addr *addr, const struct in_addr *mask, u32 secid) { int ret_val; struct netlbl_unlhsh_addr4 *entry; entry = kzalloc(sizeof(*entry), GFP_ATOMIC); if (entry == NULL) return -ENOMEM; entry->list.addr = addr->s_addr & mask->s_addr; entry->list.mask = mask->s_addr; entry->list.valid = 1; entry->secid = secid; spin_lock(&netlbl_unlhsh_lock); ret_val = netlbl_af4list_add(&entry->list, &iface->addr4_list); spin_unlock(&netlbl_unlhsh_lock); if (ret_val != 0) kfree(entry); return ret_val; } #if IS_ENABLED(CONFIG_IPV6) /** * netlbl_unlhsh_add_addr6 - Add a new IPv6 address entry to the hash table * @iface: the associated interface entry * @addr: IPv6 address in network byte order * @mask: IPv6 address mask in network byte order * @secid: LSM secid value for entry * * Description: * Add a new address entry into the unlabeled connection hash table using the * interface entry specified by @iface. On success zero is returned, otherwise * a negative value is returned. * */ static int netlbl_unlhsh_add_addr6(struct netlbl_unlhsh_iface *iface, const struct in6_addr *addr, const struct in6_addr *mask, u32 secid) { int ret_val; struct netlbl_unlhsh_addr6 *entry; entry = kzalloc(sizeof(*entry), GFP_ATOMIC); if (entry == NULL) return -ENOMEM; entry->list.addr = *addr; entry->list.addr.s6_addr32[0] &= mask->s6_addr32[0]; entry->list.addr.s6_addr32[1] &= mask->s6_addr32[1]; entry->list.addr.s6_addr32[2] &= mask->s6_addr32[2]; entry->list.addr.s6_addr32[3] &= mask->s6_addr32[3]; entry->list.mask = *mask; entry->list.valid = 1; entry->secid = secid; spin_lock(&netlbl_unlhsh_lock); ret_val = netlbl_af6list_add(&entry->list, &iface->addr6_list); spin_unlock(&netlbl_unlhsh_lock); if (ret_val != 0) kfree(entry); return 0; } #endif /* IPv6 */ /** * netlbl_unlhsh_add_iface - Adds a new interface entry to the hash table * @ifindex: network interface * * Description: * Add a new, empty, interface entry into the unlabeled connection hash table. * On success a pointer to the new interface entry is returned, on failure NULL * is returned. * */ static struct netlbl_unlhsh_iface *netlbl_unlhsh_add_iface(int ifindex) { u32 bkt; struct netlbl_unlhsh_iface *iface; iface = kzalloc(sizeof(*iface), GFP_ATOMIC); if (iface == NULL) return NULL; iface->ifindex = ifindex; INIT_LIST_HEAD(&iface->addr4_list); INIT_LIST_HEAD(&iface->addr6_list); iface->valid = 1; spin_lock(&netlbl_unlhsh_lock); if (ifindex > 0) { bkt = netlbl_unlhsh_hash(ifindex); if (netlbl_unlhsh_search_iface(ifindex) != NULL) goto add_iface_failure; list_add_tail_rcu(&iface->list, &netlbl_unlhsh_rcu_deref(netlbl_unlhsh)->tbl[bkt]); } else { INIT_LIST_HEAD(&iface->list); if (netlbl_unlhsh_rcu_deref(netlbl_unlhsh_def) != NULL) goto add_iface_failure; rcu_assign_pointer(netlbl_unlhsh_def, iface); } spin_unlock(&netlbl_unlhsh_lock); return iface; add_iface_failure: spin_unlock(&netlbl_unlhsh_lock); kfree(iface); return NULL; } /** * netlbl_unlhsh_add - Adds a new entry to the unlabeled connection hash table * @net: network namespace * @dev_name: interface name * @addr: IP address in network byte order * @mask: address mask in network byte order * @addr_len: length of address/mask (4 for IPv4, 16 for IPv6) * @secid: LSM secid value for the entry * @audit_info: NetLabel audit information * * Description: * Adds a new entry to the unlabeled connection hash table. Returns zero on * success, negative values on failure. * */ int netlbl_unlhsh_add(struct net *net, const char *dev_name, const void *addr, const void *mask, u32 addr_len, u32 secid, struct netlbl_audit *audit_info) { int ret_val; int ifindex; struct net_device *dev; struct netlbl_unlhsh_iface *iface; struct audit_buffer *audit_buf = NULL; struct lsm_context ctx; if (addr_len != sizeof(struct in_addr) && addr_len != sizeof(struct in6_addr)) return -EINVAL; rcu_read_lock(); if (dev_name != NULL) { dev = dev_get_by_name_rcu(net, dev_name); if (dev == NULL) { ret_val = -ENODEV; goto unlhsh_add_return; } ifindex = dev->ifindex; iface = netlbl_unlhsh_search_iface(ifindex); } else { ifindex = 0; iface = rcu_dereference(netlbl_unlhsh_def); } if (iface == NULL) { iface = netlbl_unlhsh_add_iface(ifindex); if (iface == NULL) { ret_val = -ENOMEM; goto unlhsh_add_return; } } audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCADD, audit_info); switch (addr_len) { case sizeof(struct in_addr): { const struct in_addr *addr4 = addr; const struct in_addr *mask4 = mask; ret_val = netlbl_unlhsh_add_addr4(iface, addr4, mask4, secid); if (audit_buf != NULL) netlbl_af4list_audit_addr(audit_buf, 1, dev_name, addr4->s_addr, mask4->s_addr); break; } #if IS_ENABLED(CONFIG_IPV6) case sizeof(struct in6_addr): { const struct in6_addr *addr6 = addr; const struct in6_addr *mask6 = mask; ret_val = netlbl_unlhsh_add_addr6(iface, addr6, mask6, secid); if (audit_buf != NULL) netlbl_af6list_audit_addr(audit_buf, 1, dev_name, addr6, mask6); break; } #endif /* IPv6 */ default: ret_val = -EINVAL; } if (ret_val == 0) atomic_inc(&netlabel_mgmt_protocount); unlhsh_add_return: rcu_read_unlock(); if (audit_buf != NULL) { if (security_secid_to_secctx(secid, &ctx) >= 0) { audit_log_format(audit_buf, " sec_obj=%s", ctx.context); security_release_secctx(&ctx); } audit_log_format(audit_buf, " res=%u", ret_val == 0 ? 1 : 0); audit_log_end(audit_buf); } return ret_val; } /** * netlbl_unlhsh_remove_addr4 - Remove an IPv4 address entry * @net: network namespace * @iface: interface entry * @addr: IP address * @mask: IP address mask * @audit_info: NetLabel audit information * * Description: * Remove an IP address entry from the unlabeled connection hash table. * Returns zero on success, negative values on failure. * */ static int netlbl_unlhsh_remove_addr4(struct net *net, struct netlbl_unlhsh_iface *iface, const struct in_addr *addr, const struct in_addr *mask, struct netlbl_audit *audit_info) { struct netlbl_af4list *list_entry; struct netlbl_unlhsh_addr4 *entry; struct audit_buffer *audit_buf; struct net_device *dev; struct lsm_context ctx; spin_lock(&netlbl_unlhsh_lock); list_entry = netlbl_af4list_remove(addr->s_addr, mask->s_addr, &iface->addr4_list); spin_unlock(&netlbl_unlhsh_lock); if (list_entry != NULL) entry = netlbl_unlhsh_addr4_entry(list_entry); else entry = NULL; audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCDEL, audit_info); if (audit_buf != NULL) { dev = dev_get_by_index(net, iface->ifindex); netlbl_af4list_audit_addr(audit_buf, 1, (dev != NULL ? dev->name : NULL), addr->s_addr, mask->s_addr); dev_put(dev); if (entry != NULL && security_secid_to_secctx(entry->secid, &ctx) >= 0) { audit_log_format(audit_buf, " sec_obj=%s", ctx.context); security_release_secctx(&ctx); } audit_log_format(audit_buf, " res=%u", entry != NULL ? 1 : 0); audit_log_end(audit_buf); } if (entry == NULL) return -ENOENT; kfree_rcu(entry, rcu); return 0; } #if IS_ENABLED(CONFIG_IPV6) /** * netlbl_unlhsh_remove_addr6 - Remove an IPv6 address entry * @net: network namespace * @iface: interface entry * @addr: IP address * @mask: IP address mask * @audit_info: NetLabel audit information * * Description: * Remove an IP address entry from the unlabeled connection hash table. * Returns zero on success, negative values on failure. * */ static int netlbl_unlhsh_remove_addr6(struct net *net, struct netlbl_unlhsh_iface *iface, const struct in6_addr *addr, const struct in6_addr *mask, struct netlbl_audit *audit_info) { struct netlbl_af6list *list_entry; struct netlbl_unlhsh_addr6 *entry; struct audit_buffer *audit_buf; struct net_device *dev; struct lsm_context ctx; spin_lock(&netlbl_unlhsh_lock); list_entry = netlbl_af6list_remove(addr, mask, &iface->addr6_list); spin_unlock(&netlbl_unlhsh_lock); if (list_entry != NULL) entry = netlbl_unlhsh_addr6_entry(list_entry); else entry = NULL; audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCDEL, audit_info); if (audit_buf != NULL) { dev = dev_get_by_index(net, iface->ifindex); netlbl_af6list_audit_addr(audit_buf, 1, (dev != NULL ? dev->name : NULL), addr, mask); dev_put(dev); if (entry != NULL && security_secid_to_secctx(entry->secid, &ctx) >= 0) { audit_log_format(audit_buf, " sec_obj=%s", ctx.context); security_release_secctx(&ctx); } audit_log_format(audit_buf, " res=%u", entry != NULL ? 1 : 0); audit_log_end(audit_buf); } if (entry == NULL) return -ENOENT; kfree_rcu(entry, rcu); return 0; } #endif /* IPv6 */ /** * netlbl_unlhsh_condremove_iface - Remove an interface entry * @iface: the interface entry * * Description: * Remove an interface entry from the unlabeled connection hash table if it is * empty. An interface entry is considered to be empty if there are no * address entries assigned to it. * */ static void netlbl_unlhsh_condremove_iface(struct netlbl_unlhsh_iface *iface) { struct netlbl_af4list *iter4; #if IS_ENABLED(CONFIG_IPV6) struct netlbl_af6list *iter6; #endif /* IPv6 */ spin_lock(&netlbl_unlhsh_lock); netlbl_af4list_foreach_rcu(iter4, &iface->addr4_list) goto unlhsh_condremove_failure; #if IS_ENABLED(CONFIG_IPV6) netlbl_af6list_foreach_rcu(iter6, &iface->addr6_list) goto unlhsh_condremove_failure; #endif /* IPv6 */ iface->valid = 0; if (iface->ifindex > 0) list_del_rcu(&iface->list); else RCU_INIT_POINTER(netlbl_unlhsh_def, NULL); spin_unlock(&netlbl_unlhsh_lock); call_rcu(&iface->rcu, netlbl_unlhsh_free_iface); return; unlhsh_condremove_failure: spin_unlock(&netlbl_unlhsh_lock); } /** * netlbl_unlhsh_remove - Remove an entry from the unlabeled hash table * @net: network namespace * @dev_name: interface name * @addr: IP address in network byte order * @mask: address mask in network byte order * @addr_len: length of address/mask (4 for IPv4, 16 for IPv6) * @audit_info: NetLabel audit information * * Description: * Removes and existing entry from the unlabeled connection hash table. * Returns zero on success, negative values on failure. * */ int netlbl_unlhsh_remove(struct net *net, const char *dev_name, const void *addr, const void *mask, u32 addr_len, struct netlbl_audit *audit_info) { int ret_val; struct net_device *dev; struct netlbl_unlhsh_iface *iface; if (addr_len != sizeof(struct in_addr) && addr_len != sizeof(struct in6_addr)) return -EINVAL; rcu_read_lock(); if (dev_name != NULL) { dev = dev_get_by_name_rcu(net, dev_name); if (dev == NULL) { ret_val = -ENODEV; goto unlhsh_remove_return; } iface = netlbl_unlhsh_search_iface(dev->ifindex); } else iface = rcu_dereference(netlbl_unlhsh_def); if (iface == NULL) { ret_val = -ENOENT; goto unlhsh_remove_return; } switch (addr_len) { case sizeof(struct in_addr): ret_val = netlbl_unlhsh_remove_addr4(net, iface, addr, mask, audit_info); break; #if IS_ENABLED(CONFIG_IPV6) case sizeof(struct in6_addr): ret_val = netlbl_unlhsh_remove_addr6(net, iface, addr, mask, audit_info); break; #endif /* IPv6 */ default: ret_val = -EINVAL; } if (ret_val == 0) { netlbl_unlhsh_condremove_iface(iface); atomic_dec(&netlabel_mgmt_protocount); } unlhsh_remove_return: rcu_read_unlock(); return ret_val; } /* * General Helper Functions */ /** * netlbl_unlhsh_netdev_handler - Network device notification handler * @this: notifier block * @event: the event * @ptr: the netdevice notifier info (cast to void) * * Description: * Handle network device events, although at present all we care about is a * network device going away. In the case of a device going away we clear any * related entries from the unlabeled connection hash table. * */ static int netlbl_unlhsh_netdev_handler(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct netlbl_unlhsh_iface *iface = NULL; if (!net_eq(dev_net(dev), &init_net)) return NOTIFY_DONE; /* XXX - should this be a check for NETDEV_DOWN or _UNREGISTER? */ if (event == NETDEV_DOWN) { spin_lock(&netlbl_unlhsh_lock); iface = netlbl_unlhsh_search_iface(dev->ifindex); if (iface != NULL && iface->valid) { iface->valid = 0; list_del_rcu(&iface->list); } else iface = NULL; spin_unlock(&netlbl_unlhsh_lock); } if (iface != NULL) call_rcu(&iface->rcu, netlbl_unlhsh_free_iface); return NOTIFY_DONE; } /** * netlbl_unlabel_acceptflg_set - Set the unlabeled accept flag * @value: desired value * @audit_info: NetLabel audit information * * Description: * Set the value of the unlabeled accept flag to @value. * */ static void netlbl_unlabel_acceptflg_set(u8 value, struct netlbl_audit *audit_info) { struct audit_buffer *audit_buf; u8 old_val; old_val = netlabel_unlabel_acceptflg; netlabel_unlabel_acceptflg = value; audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_ALLOW, audit_info); if (audit_buf != NULL) { audit_log_format(audit_buf, " unlbl_accept=%u old=%u", value, old_val); audit_log_end(audit_buf); } } /** * netlbl_unlabel_addrinfo_get - Get the IPv4/6 address information * @info: the Generic NETLINK info block * @addr: the IP address * @mask: the IP address mask * @len: the address length * * Description: * Examine the Generic NETLINK message and extract the IP address information. * Returns zero on success, negative values on failure. * */ static int netlbl_unlabel_addrinfo_get(struct genl_info *info, void **addr, void **mask, u32 *len) { u32 addr_len; if (info->attrs[NLBL_UNLABEL_A_IPV4ADDR] && info->attrs[NLBL_UNLABEL_A_IPV4MASK]) { addr_len = nla_len(info->attrs[NLBL_UNLABEL_A_IPV4ADDR]); if (addr_len != sizeof(struct in_addr) && addr_len != nla_len(info->attrs[NLBL_UNLABEL_A_IPV4MASK])) return -EINVAL; *len = addr_len; *addr = nla_data(info->attrs[NLBL_UNLABEL_A_IPV4ADDR]); *mask = nla_data(info->attrs[NLBL_UNLABEL_A_IPV4MASK]); return 0; } else if (info->attrs[NLBL_UNLABEL_A_IPV6ADDR]) { addr_len = nla_len(info->attrs[NLBL_UNLABEL_A_IPV6ADDR]); if (addr_len != sizeof(struct in6_addr) && addr_len != nla_len(info->attrs[NLBL_UNLABEL_A_IPV6MASK])) return -EINVAL; *len = addr_len; *addr = nla_data(info->attrs[NLBL_UNLABEL_A_IPV6ADDR]); *mask = nla_data(info->attrs[NLBL_UNLABEL_A_IPV6MASK]); return 0; } return -EINVAL; } /* * NetLabel Command Handlers */ /** * netlbl_unlabel_accept - Handle an ACCEPT message * @skb: the NETLINK buffer * @info: the Generic NETLINK info block * * Description: * Process a user generated ACCEPT message and set the accept flag accordingly. * Returns zero on success, negative values on failure. * */ static int netlbl_unlabel_accept(struct sk_buff *skb, struct genl_info *info) { u8 value; struct netlbl_audit audit_info; if (info->attrs[NLBL_UNLABEL_A_ACPTFLG]) { value = nla_get_u8(info->attrs[NLBL_UNLABEL_A_ACPTFLG]); if (value == 1 || value == 0) { netlbl_netlink_auditinfo(&audit_info); netlbl_unlabel_acceptflg_set(value, &audit_info); return 0; } } return -EINVAL; } /** * netlbl_unlabel_list - Handle a LIST message * @skb: the NETLINK buffer * @info: the Generic NETLINK info block * * Description: * Process a user generated LIST message and respond with the current status. * Returns zero on success, negative values on failure. * */ static int netlbl_unlabel_list(struct sk_buff *skb, struct genl_info *info) { int ret_val = -EINVAL; struct sk_buff *ans_skb; void *data; ans_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (ans_skb == NULL) goto list_failure; data = genlmsg_put_reply(ans_skb, info, &netlbl_unlabel_gnl_family, 0, NLBL_UNLABEL_C_LIST); if (data == NULL) { ret_val = -ENOMEM; goto list_failure; } ret_val = nla_put_u8(ans_skb, NLBL_UNLABEL_A_ACPTFLG, netlabel_unlabel_acceptflg); if (ret_val != 0) goto list_failure; genlmsg_end(ans_skb, data); return genlmsg_reply(ans_skb, info); list_failure: kfree_skb(ans_skb); return ret_val; } /** * netlbl_unlabel_staticadd - Handle a STATICADD message * @skb: the NETLINK buffer * @info: the Generic NETLINK info block * * Description: * Process a user generated STATICADD message and add a new unlabeled * connection entry to the hash table. Returns zero on success, negative * values on failure. * */ static int netlbl_unlabel_staticadd(struct sk_buff *skb, struct genl_info *info) { int ret_val; char *dev_name; void *addr; void *mask; u32 addr_len; u32 secid; struct netlbl_audit audit_info; /* Don't allow users to add both IPv4 and IPv6 addresses for a * single entry. However, allow users to create two entries, one each * for IPv4 and IPv6, with the same LSM security context which should * achieve the same result. */ if (!info->attrs[NLBL_UNLABEL_A_SECCTX] || !info->attrs[NLBL_UNLABEL_A_IFACE] || !((!info->attrs[NLBL_UNLABEL_A_IPV4ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV4MASK]) ^ (!info->attrs[NLBL_UNLABEL_A_IPV6ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV6MASK]))) return -EINVAL; netlbl_netlink_auditinfo(&audit_info); ret_val = netlbl_unlabel_addrinfo_get(info, &addr, &mask, &addr_len); if (ret_val != 0) return ret_val; dev_name = nla_data(info->attrs[NLBL_UNLABEL_A_IFACE]); ret_val = security_secctx_to_secid( nla_data(info->attrs[NLBL_UNLABEL_A_SECCTX]), nla_len(info->attrs[NLBL_UNLABEL_A_SECCTX]), &secid); if (ret_val != 0) return ret_val; return netlbl_unlhsh_add(&init_net, dev_name, addr, mask, addr_len, secid, &audit_info); } /** * netlbl_unlabel_staticadddef - Handle a STATICADDDEF message * @skb: the NETLINK buffer * @info: the Generic NETLINK info block * * Description: * Process a user generated STATICADDDEF message and add a new default * unlabeled connection entry. Returns zero on success, negative values on * failure. * */ static int netlbl_unlabel_staticadddef(struct sk_buff *skb, struct genl_info *info) { int ret_val; void *addr; void *mask; u32 addr_len; u32 secid; struct netlbl_audit audit_info; /* Don't allow users to add both IPv4 and IPv6 addresses for a * single entry. However, allow users to create two entries, one each * for IPv4 and IPv6, with the same LSM security context which should * achieve the same result. */ if (!info->attrs[NLBL_UNLABEL_A_SECCTX] || !((!info->attrs[NLBL_UNLABEL_A_IPV4ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV4MASK]) ^ (!info->attrs[NLBL_UNLABEL_A_IPV6ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV6MASK]))) return -EINVAL; netlbl_netlink_auditinfo(&audit_info); ret_val = netlbl_unlabel_addrinfo_get(info, &addr, &mask, &addr_len); if (ret_val != 0) return ret_val; ret_val = security_secctx_to_secid( nla_data(info->attrs[NLBL_UNLABEL_A_SECCTX]), nla_len(info->attrs[NLBL_UNLABEL_A_SECCTX]), &secid); if (ret_val != 0) return ret_val; return netlbl_unlhsh_add(&init_net, NULL, addr, mask, addr_len, secid, &audit_info); } /** * netlbl_unlabel_staticremove - Handle a STATICREMOVE message * @skb: the NETLINK buffer * @info: the Generic NETLINK info block * * Description: * Process a user generated STATICREMOVE message and remove the specified * unlabeled connection entry. Returns zero on success, negative values on * failure. * */ static int netlbl_unlabel_staticremove(struct sk_buff *skb, struct genl_info *info) { int ret_val; char *dev_name; void *addr; void *mask; u32 addr_len; struct netlbl_audit audit_info; /* See the note in netlbl_unlabel_staticadd() about not allowing both * IPv4 and IPv6 in the same entry. */ if (!info->attrs[NLBL_UNLABEL_A_IFACE] || !((!info->attrs[NLBL_UNLABEL_A_IPV4ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV4MASK]) ^ (!info->attrs[NLBL_UNLABEL_A_IPV6ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV6MASK]))) return -EINVAL; netlbl_netlink_auditinfo(&audit_info); ret_val = netlbl_unlabel_addrinfo_get(info, &addr, &mask, &addr_len); if (ret_val != 0) return ret_val; dev_name = nla_data(info->attrs[NLBL_UNLABEL_A_IFACE]); return netlbl_unlhsh_remove(&init_net, dev_name, addr, mask, addr_len, &audit_info); } /** * netlbl_unlabel_staticremovedef - Handle a STATICREMOVEDEF message * @skb: the NETLINK buffer * @info: the Generic NETLINK info block * * Description: * Process a user generated STATICREMOVEDEF message and remove the default * unlabeled connection entry. Returns zero on success, negative values on * failure. * */ static int netlbl_unlabel_staticremovedef(struct sk_buff *skb, struct genl_info *info) { int ret_val; void *addr; void *mask; u32 addr_len; struct netlbl_audit audit_info; /* See the note in netlbl_unlabel_staticadd() about not allowing both * IPv4 and IPv6 in the same entry. */ if (!((!info->attrs[NLBL_UNLABEL_A_IPV4ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV4MASK]) ^ (!info->attrs[NLBL_UNLABEL_A_IPV6ADDR] || !info->attrs[NLBL_UNLABEL_A_IPV6MASK]))) return -EINVAL; netlbl_netlink_auditinfo(&audit_info); ret_val = netlbl_unlabel_addrinfo_get(info, &addr, &mask, &addr_len); if (ret_val != 0) return ret_val; return netlbl_unlhsh_remove(&init_net, NULL, addr, mask, addr_len, &audit_info); } /** * netlbl_unlabel_staticlist_gen - Generate messages for STATICLIST[DEF] * @cmd: command/message * @iface: the interface entry * @addr4: the IPv4 address entry * @addr6: the IPv6 address entry * @arg: the netlbl_unlhsh_walk_arg structure * * Description: * This function is designed to be used to generate a response for a * STATICLIST or STATICLISTDEF message. When called either @addr4 or @addr6 * can be specified, not both, the other unspecified entry should be set to * NULL by the caller. Returns the size of the message on success, negative * values on failure. * */ static int netlbl_unlabel_staticlist_gen(u32 cmd, const struct netlbl_unlhsh_iface *iface, const struct netlbl_unlhsh_addr4 *addr4, const struct netlbl_unlhsh_addr6 *addr6, void *arg) { int ret_val = -ENOMEM; struct netlbl_unlhsh_walk_arg *cb_arg = arg; struct net_device *dev; struct lsm_context ctx; void *data; u32 secid; data = genlmsg_put(cb_arg->skb, NETLINK_CB(cb_arg->nl_cb->skb).portid, cb_arg->seq, &netlbl_unlabel_gnl_family, NLM_F_MULTI, cmd); if (data == NULL) goto list_cb_failure; if (iface->ifindex > 0) { dev = dev_get_by_index(&init_net, iface->ifindex); if (!dev) { ret_val = -ENODEV; goto list_cb_failure; } ret_val = nla_put_string(cb_arg->skb, NLBL_UNLABEL_A_IFACE, dev->name); dev_put(dev); if (ret_val != 0) goto list_cb_failure; } if (addr4) { struct in_addr addr_struct; addr_struct.s_addr = addr4->list.addr; ret_val = nla_put_in_addr(cb_arg->skb, NLBL_UNLABEL_A_IPV4ADDR, addr_struct.s_addr); if (ret_val != 0) goto list_cb_failure; addr_struct.s_addr = addr4->list.mask; ret_val = nla_put_in_addr(cb_arg->skb, NLBL_UNLABEL_A_IPV4MASK, addr_struct.s_addr); if (ret_val != 0) goto list_cb_failure; secid = addr4->secid; } else { ret_val = nla_put_in6_addr(cb_arg->skb, NLBL_UNLABEL_A_IPV6ADDR, &addr6->list.addr); if (ret_val != 0) goto list_cb_failure; ret_val = nla_put_in6_addr(cb_arg->skb, NLBL_UNLABEL_A_IPV6MASK, &addr6->list.mask); if (ret_val != 0) goto list_cb_failure; secid = addr6->secid; } ret_val = security_secid_to_secctx(secid, &ctx); if (ret_val < 0) goto list_cb_failure; ret_val = nla_put(cb_arg->skb, NLBL_UNLABEL_A_SECCTX, ctx.len, ctx.context); security_release_secctx(&ctx); if (ret_val != 0) goto list_cb_failure; cb_arg->seq++; genlmsg_end(cb_arg->skb, data); return 0; list_cb_failure: genlmsg_cancel(cb_arg->skb, data); return ret_val; } /** * netlbl_unlabel_staticlist - Handle a STATICLIST message * @skb: the NETLINK buffer * @cb: the NETLINK callback * * Description: * Process a user generated STATICLIST message and dump the unlabeled * connection hash table in a form suitable for use in a kernel generated * STATICLIST message. Returns the length of @skb. * */ static int netlbl_unlabel_staticlist(struct sk_buff *skb, struct netlink_callback *cb) { struct netlbl_unlhsh_walk_arg cb_arg; u32 skip_bkt = cb->args[0]; u32 skip_chain = cb->args[1]; u32 skip_addr4 = cb->args[2]; u32 iter_bkt, iter_chain = 0, iter_addr4 = 0, iter_addr6 = 0; struct netlbl_unlhsh_iface *iface; struct list_head *iter_list; struct netlbl_af4list *addr4; #if IS_ENABLED(CONFIG_IPV6) u32 skip_addr6 = cb->args[3]; struct netlbl_af6list *addr6; #endif cb_arg.nl_cb = cb; cb_arg.skb = skb; cb_arg.seq = cb->nlh->nlmsg_seq; rcu_read_lock(); for (iter_bkt = skip_bkt; iter_bkt < rcu_dereference(netlbl_unlhsh)->size; iter_bkt++) { iter_list = &rcu_dereference(netlbl_unlhsh)->tbl[iter_bkt]; list_for_each_entry_rcu(iface, iter_list, list) { if (!iface->valid || iter_chain++ < skip_chain) continue; netlbl_af4list_foreach_rcu(addr4, &iface->addr4_list) { if (iter_addr4++ < skip_addr4) continue; if (netlbl_unlabel_staticlist_gen( NLBL_UNLABEL_C_STATICLIST, iface, netlbl_unlhsh_addr4_entry(addr4), NULL, &cb_arg) < 0) { iter_addr4--; iter_chain--; goto unlabel_staticlist_return; } } iter_addr4 = 0; skip_addr4 = 0; #if IS_ENABLED(CONFIG_IPV6) netlbl_af6list_foreach_rcu(addr6, &iface->addr6_list) { if (iter_addr6++ < skip_addr6) continue; if (netlbl_unlabel_staticlist_gen( NLBL_UNLABEL_C_STATICLIST, iface, NULL, netlbl_unlhsh_addr6_entry(addr6), &cb_arg) < 0) { iter_addr6--; iter_chain--; goto unlabel_staticlist_return; } } iter_addr6 = 0; skip_addr6 = 0; #endif /* IPv6 */ } iter_chain = 0; skip_chain = 0; } unlabel_staticlist_return: rcu_read_unlock(); cb->args[0] = iter_bkt; cb->args[1] = iter_chain; cb->args[2] = iter_addr4; cb->args[3] = iter_addr6; return skb->len; } /** * netlbl_unlabel_staticlistdef - Handle a STATICLISTDEF message * @skb: the NETLINK buffer * @cb: the NETLINK callback * * Description: * Process a user generated STATICLISTDEF message and dump the default * unlabeled connection entry in a form suitable for use in a kernel generated * STATICLISTDEF message. Returns the length of @skb. * */ static int netlbl_unlabel_staticlistdef(struct sk_buff *skb, struct netlink_callback *cb) { struct netlbl_unlhsh_walk_arg cb_arg; struct netlbl_unlhsh_iface *iface; u32 iter_addr4 = 0, iter_addr6 = 0; struct netlbl_af4list *addr4; #if IS_ENABLED(CONFIG_IPV6) struct netlbl_af6list *addr6; #endif cb_arg.nl_cb = cb; cb_arg.skb = skb; cb_arg.seq = cb->nlh->nlmsg_seq; rcu_read_lock(); iface = rcu_dereference(netlbl_unlhsh_def); if (iface == NULL || !iface->valid) goto unlabel_staticlistdef_return; netlbl_af4list_foreach_rcu(addr4, &iface->addr4_list) { if (iter_addr4++ < cb->args[0]) continue; if (netlbl_unlabel_staticlist_gen(NLBL_UNLABEL_C_STATICLISTDEF, iface, netlbl_unlhsh_addr4_entry(addr4), NULL, &cb_arg) < 0) { iter_addr4--; goto unlabel_staticlistdef_return; } } #if IS_ENABLED(CONFIG_IPV6) netlbl_af6list_foreach_rcu(addr6, &iface->addr6_list) { if (iter_addr6++ < cb->args[1]) continue; if (netlbl_unlabel_staticlist_gen(NLBL_UNLABEL_C_STATICLISTDEF, iface, NULL, netlbl_unlhsh_addr6_entry(addr6), &cb_arg) < 0) { iter_addr6--; goto unlabel_staticlistdef_return; } } #endif /* IPv6 */ unlabel_staticlistdef_return: rcu_read_unlock(); cb->args[0] = iter_addr4; cb->args[1] = iter_addr6; return skb->len; } /* * NetLabel Generic NETLINK Command Definitions */ static const struct genl_small_ops netlbl_unlabel_genl_ops[] = { { .cmd = NLBL_UNLABEL_C_STATICADD, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = GENL_ADMIN_PERM, .doit = netlbl_unlabel_staticadd, .dumpit = NULL, }, { .cmd = NLBL_UNLABEL_C_STATICREMOVE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = GENL_ADMIN_PERM, .doit = netlbl_unlabel_staticremove, .dumpit = NULL, }, { .cmd = NLBL_UNLABEL_C_STATICLIST, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = 0, .doit = NULL, .dumpit = netlbl_unlabel_staticlist, }, { .cmd = NLBL_UNLABEL_C_STATICADDDEF, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = GENL_ADMIN_PERM, .doit = netlbl_unlabel_staticadddef, .dumpit = NULL, }, { .cmd = NLBL_UNLABEL_C_STATICREMOVEDEF, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = GENL_ADMIN_PERM, .doit = netlbl_unlabel_staticremovedef, .dumpit = NULL, }, { .cmd = NLBL_UNLABEL_C_STATICLISTDEF, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = 0, .doit = NULL, .dumpit = netlbl_unlabel_staticlistdef, }, { .cmd = NLBL_UNLABEL_C_ACCEPT, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = GENL_ADMIN_PERM, .doit = netlbl_unlabel_accept, .dumpit = NULL, }, { .cmd = NLBL_UNLABEL_C_LIST, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .flags = 0, .doit = netlbl_unlabel_list, .dumpit = NULL, }, }; static struct genl_family netlbl_unlabel_gnl_family __ro_after_init = { .hdrsize = 0, .name = NETLBL_NLTYPE_UNLABELED_NAME, .version = NETLBL_PROTO_VERSION, .maxattr = NLBL_UNLABEL_A_MAX, .policy = netlbl_unlabel_genl_policy, .module = THIS_MODULE, .small_ops = netlbl_unlabel_genl_ops, .n_small_ops = ARRAY_SIZE(netlbl_unlabel_genl_ops), .resv_start_op = NLBL_UNLABEL_C_STATICLISTDEF + 1, }; /* * NetLabel Generic NETLINK Protocol Functions */ /** * netlbl_unlabel_genl_init - Register the Unlabeled NetLabel component * * Description: * Register the unlabeled packet NetLabel component with the Generic NETLINK * mechanism. Returns zero on success, negative values on failure. * */ int __init netlbl_unlabel_genl_init(void) { return genl_register_family(&netlbl_unlabel_gnl_family); } /* * NetLabel KAPI Hooks */ static struct notifier_block netlbl_unlhsh_netdev_notifier = { .notifier_call = netlbl_unlhsh_netdev_handler, }; /** * netlbl_unlabel_init - Initialize the unlabeled connection hash table * @size: the number of bits to use for the hash buckets * * Description: * Initializes the unlabeled connection hash table and registers a network * device notification handler. This function should only be called by the * NetLabel subsystem itself during initialization. Returns zero on success, * non-zero values on error. * */ int __init netlbl_unlabel_init(u32 size) { u32 iter; struct netlbl_unlhsh_tbl *hsh_tbl; if (size == 0) return -EINVAL; hsh_tbl = kmalloc(sizeof(*hsh_tbl), GFP_KERNEL); if (hsh_tbl == NULL) return -ENOMEM; hsh_tbl->size = 1 << size; hsh_tbl->tbl = kcalloc(hsh_tbl->size, sizeof(struct list_head), GFP_KERNEL); if (hsh_tbl->tbl == NULL) { kfree(hsh_tbl); return -ENOMEM; } for (iter = 0; iter < hsh_tbl->size; iter++) INIT_LIST_HEAD(&hsh_tbl->tbl[iter]); spin_lock(&netlbl_unlhsh_lock); rcu_assign_pointer(netlbl_unlhsh, hsh_tbl); spin_unlock(&netlbl_unlhsh_lock); register_netdevice_notifier(&netlbl_unlhsh_netdev_notifier); return 0; } /** * netlbl_unlabel_getattr - Get the security attributes for an unlabled packet * @skb: the packet * @family: protocol family * @secattr: the security attributes * * Description: * Determine the security attributes, if any, for an unlabled packet and return * them in @secattr. Returns zero on success and negative values on failure. * */ int netlbl_unlabel_getattr(const struct sk_buff *skb, u16 family, struct netlbl_lsm_secattr *secattr) { struct netlbl_unlhsh_iface *iface; rcu_read_lock(); iface = netlbl_unlhsh_search_iface(skb->skb_iif); if (iface == NULL) iface = rcu_dereference(netlbl_unlhsh_def); if (iface == NULL || !iface->valid) goto unlabel_getattr_nolabel; #if IS_ENABLED(CONFIG_IPV6) /* When resolving a fallback label, check the sk_buff version as * it is possible (e.g. SCTP) to have family = PF_INET6 while * receiving ip_hdr(skb)->version = 4. */ if (family == PF_INET6 && ip_hdr(skb)->version == 4) family = PF_INET; #endif /* IPv6 */ switch (family) { case PF_INET: { struct iphdr *hdr4; struct netlbl_af4list *addr4; hdr4 = ip_hdr(skb); addr4 = netlbl_af4list_search(hdr4->saddr, &iface->addr4_list); if (addr4 == NULL) goto unlabel_getattr_nolabel; secattr->attr.secid = netlbl_unlhsh_addr4_entry(addr4)->secid; break; } #if IS_ENABLED(CONFIG_IPV6) case PF_INET6: { struct ipv6hdr *hdr6; struct netlbl_af6list *addr6; hdr6 = ipv6_hdr(skb); addr6 = netlbl_af6list_search(&hdr6->saddr, &iface->addr6_list); if (addr6 == NULL) goto unlabel_getattr_nolabel; secattr->attr.secid = netlbl_unlhsh_addr6_entry(addr6)->secid; break; } #endif /* IPv6 */ default: goto unlabel_getattr_nolabel; } rcu_read_unlock(); secattr->flags |= NETLBL_SECATTR_SECID; secattr->type = NETLBL_NLTYPE_UNLABELED; return 0; unlabel_getattr_nolabel: rcu_read_unlock(); if (netlabel_unlabel_acceptflg == 0) return -ENOMSG; secattr->type = NETLBL_NLTYPE_UNLABELED; return 0; } /** * netlbl_unlabel_defconf - Set the default config to allow unlabeled packets * * Description: * Set the default NetLabel configuration to allow incoming unlabeled packets * and to send unlabeled network traffic by default. * */ int __init netlbl_unlabel_defconf(void) { int ret_val; struct netlbl_dom_map *entry; struct netlbl_audit audit_info; /* Only the kernel is allowed to call this function and the only time * it is called is at bootup before the audit subsystem is reporting * messages so don't worry to much about these values. */ security_current_getlsmprop_subj(&audit_info.prop); audit_info.loginuid = GLOBAL_ROOT_UID; audit_info.sessionid = 0; entry = kzalloc(sizeof(*entry), GFP_KERNEL); if (entry == NULL) return -ENOMEM; entry->family = AF_UNSPEC; entry->def.type = NETLBL_NLTYPE_UNLABELED; ret_val = netlbl_domhsh_add_default(entry, &audit_info); if (ret_val != 0) return ret_val; netlbl_unlabel_acceptflg_set(1, &audit_info); return 0; } |
| 4 3128 3313 4 20 3313 24 3254 535 3224 11 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_BITOPS_H #define _ASM_X86_BITOPS_H /* * Copyright 1992, Linus Torvalds. * * Note: inlines with more than a single statement should be marked * __always_inline to avoid problems with older gcc's inlining heuristics. */ #ifndef _LINUX_BITOPS_H #error only <linux/bitops.h> can be included directly #endif #include <linux/compiler.h> #include <asm/alternative.h> #include <asm/rmwcc.h> #include <asm/barrier.h> #if BITS_PER_LONG == 32 # define _BITOPS_LONG_SHIFT 5 #elif BITS_PER_LONG == 64 # define _BITOPS_LONG_SHIFT 6 #else # error "Unexpected BITS_PER_LONG" #endif #define BIT_64(n) (U64_C(1) << (n)) /* * These have to be done with inline assembly: that way the bit-setting * is guaranteed to be atomic. All bit operations return 0 if the bit * was cleared before the operation and != 0 if it was not. * * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1). */ #define RLONG_ADDR(x) "m" (*(volatile long *) (x)) #define WBYTE_ADDR(x) "+m" (*(volatile char *) (x)) #define ADDR RLONG_ADDR(addr) /* * We do the locked ops that don't return the old value as * a mask operation on a byte. */ #define CONST_MASK_ADDR(nr, addr) WBYTE_ADDR((void *)(addr) + ((nr)>>3)) #define CONST_MASK(nr) (1 << ((nr) & 7)) static __always_inline void arch_set_bit(long nr, volatile unsigned long *addr) { if (__builtin_constant_p(nr)) { asm_inline volatile(LOCK_PREFIX "orb %b1,%0" : CONST_MASK_ADDR(nr, addr) : "iq" (CONST_MASK(nr)) : "memory"); } else { asm_inline volatile(LOCK_PREFIX __ASM_SIZE(bts) " %1,%0" : : RLONG_ADDR(addr), "Ir" (nr) : "memory"); } } static __always_inline void arch___set_bit(unsigned long nr, volatile unsigned long *addr) { asm volatile(__ASM_SIZE(bts) " %1,%0" : : ADDR, "Ir" (nr) : "memory"); } static __always_inline void arch_clear_bit(long nr, volatile unsigned long *addr) { if (__builtin_constant_p(nr)) { asm_inline volatile(LOCK_PREFIX "andb %b1,%0" : CONST_MASK_ADDR(nr, addr) : "iq" (~CONST_MASK(nr))); } else { asm_inline volatile(LOCK_PREFIX __ASM_SIZE(btr) " %1,%0" : : RLONG_ADDR(addr), "Ir" (nr) : "memory"); } } static __always_inline void arch_clear_bit_unlock(long nr, volatile unsigned long *addr) { barrier(); arch_clear_bit(nr, addr); } static __always_inline void arch___clear_bit(unsigned long nr, volatile unsigned long *addr) { asm volatile(__ASM_SIZE(btr) " %1,%0" : : ADDR, "Ir" (nr) : "memory"); } static __always_inline bool arch_xor_unlock_is_negative_byte(unsigned long mask, volatile unsigned long *addr) { bool negative; asm_inline volatile(LOCK_PREFIX "xorb %2,%1" : "=@ccs" (negative), WBYTE_ADDR(addr) : "iq" ((char)mask) : "memory"); return negative; } #define arch_xor_unlock_is_negative_byte arch_xor_unlock_is_negative_byte static __always_inline void arch___clear_bit_unlock(long nr, volatile unsigned long *addr) { arch___clear_bit(nr, addr); } static __always_inline void arch___change_bit(unsigned long nr, volatile unsigned long *addr) { asm volatile(__ASM_SIZE(btc) " %1,%0" : : ADDR, "Ir" (nr) : "memory"); } static __always_inline void arch_change_bit(long nr, volatile unsigned long *addr) { if (__builtin_constant_p(nr)) { asm_inline volatile(LOCK_PREFIX "xorb %b1,%0" : CONST_MASK_ADDR(nr, addr) : "iq" (CONST_MASK(nr))); } else { asm_inline volatile(LOCK_PREFIX __ASM_SIZE(btc) " %1,%0" : : RLONG_ADDR(addr), "Ir" (nr) : "memory"); } } static __always_inline bool arch_test_and_set_bit(long nr, volatile unsigned long *addr) { return GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(bts), *addr, c, "Ir", nr); } static __always_inline bool arch_test_and_set_bit_lock(long nr, volatile unsigned long *addr) { return arch_test_and_set_bit(nr, addr); } static __always_inline bool arch___test_and_set_bit(unsigned long nr, volatile unsigned long *addr) { bool oldbit; asm(__ASM_SIZE(bts) " %2,%1" : "=@ccc" (oldbit) : ADDR, "Ir" (nr) : "memory"); return oldbit; } static __always_inline bool arch_test_and_clear_bit(long nr, volatile unsigned long *addr) { return GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(btr), *addr, c, "Ir", nr); } /* * Note: the operation is performed atomically with respect to * the local CPU, but not other CPUs. Portable code should not * rely on this behaviour. * KVM relies on this behaviour on x86 for modifying memory that is also * accessed from a hypervisor on the same CPU if running in a VM: don't change * this without also updating arch/x86/kernel/kvm.c */ static __always_inline bool arch___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr) { bool oldbit; asm volatile(__ASM_SIZE(btr) " %2,%1" : "=@ccc" (oldbit) : ADDR, "Ir" (nr) : "memory"); return oldbit; } static __always_inline bool arch___test_and_change_bit(unsigned long nr, volatile unsigned long *addr) { bool oldbit; asm volatile(__ASM_SIZE(btc) " %2,%1" : "=@ccc" (oldbit) : ADDR, "Ir" (nr) : "memory"); return oldbit; } static __always_inline bool arch_test_and_change_bit(long nr, volatile unsigned long *addr) { return GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(btc), *addr, c, "Ir", nr); } static __always_inline bool constant_test_bit(long nr, const volatile unsigned long *addr) { return ((1UL << (nr & (BITS_PER_LONG-1))) & (addr[nr >> _BITOPS_LONG_SHIFT])) != 0; } static __always_inline bool constant_test_bit_acquire(long nr, const volatile unsigned long *addr) { bool oldbit; asm volatile("testb %2,%1" : "=@ccnz" (oldbit) : "m" (((unsigned char *)addr)[nr >> 3]), "i" (1 << (nr & 7)) :"memory"); return oldbit; } static __always_inline bool variable_test_bit(long nr, volatile const unsigned long *addr) { bool oldbit; asm volatile(__ASM_SIZE(bt) " %2,%1" : "=@ccc" (oldbit) : "m" (*(unsigned long *)addr), "Ir" (nr) : "memory"); return oldbit; } static __always_inline bool arch_test_bit(unsigned long nr, const volatile unsigned long *addr) { return __builtin_constant_p(nr) ? constant_test_bit(nr, addr) : variable_test_bit(nr, addr); } static __always_inline bool arch_test_bit_acquire(unsigned long nr, const volatile unsigned long *addr) { return __builtin_constant_p(nr) ? constant_test_bit_acquire(nr, addr) : variable_test_bit(nr, addr); } static __always_inline __attribute_const__ unsigned long variable__ffs(unsigned long word) { asm("tzcnt %1,%0" : "=r" (word) : ASM_INPUT_RM (word)); return word; } /** * __ffs - find first set bit in word * @word: The word to search * * Undefined if no bit exists, so code should check against 0 first. */ #define __ffs(word) \ (__builtin_constant_p(word) ? \ (unsigned long)__builtin_ctzl(word) : \ variable__ffs(word)) static __always_inline __attribute_const__ unsigned long variable_ffz(unsigned long word) { return variable__ffs(~word); } /** * ffz - find first zero bit in word * @word: The word to search * * Undefined if no zero exists, so code should check against ~0UL first. */ #define ffz(word) \ (__builtin_constant_p(word) ? \ (unsigned long)__builtin_ctzl(~word) : \ variable_ffz(word)) /* * __fls: find last set bit in word * @word: The word to search * * Undefined if no set bit exists, so code should check against 0 first. */ static __always_inline __attribute_const__ unsigned long __fls(unsigned long word) { if (__builtin_constant_p(word)) return BITS_PER_LONG - 1 - __builtin_clzl(word); asm("bsr %1,%0" : "=r" (word) : ASM_INPUT_RM (word)); return word; } #undef ADDR #ifdef __KERNEL__ static __always_inline __attribute_const__ int variable_ffs(int x) { int r; #ifdef CONFIG_X86_64 /* * AMD64 says BSFL won't clobber the dest reg if x==0; Intel64 says the * dest reg is undefined if x==0, but their CPU architect says its * value is written to set it to the same as before, except that the * top 32 bits will be cleared. * * We cannot do this on 32 bits because at the very least some * 486 CPUs did not behave this way. */ asm("bsfl %1,%0" : "=r" (r) : ASM_INPUT_RM (x), "0" (-1)); #elif defined(CONFIG_X86_CMOV) asm("bsfl %1,%0\n\t" "cmovzl %2,%0" : "=&r" (r) : "rm" (x), "r" (-1)); #else asm("bsfl %1,%0\n\t" "jnz 1f\n\t" "movl $-1,%0\n" "1:" : "=r" (r) : "rm" (x)); #endif return r + 1; } /** * ffs - find first set bit in word * @x: the word to search * * This is defined the same way as the libc and compiler builtin ffs * routines, therefore differs in spirit from the other bitops. * * ffs(value) returns 0 if value is 0 or the position of the first * set bit if value is nonzero. The first (least significant) bit * is at position 1. */ #define ffs(x) (__builtin_constant_p(x) ? __builtin_ffs(x) : variable_ffs(x)) /** * fls - find last set bit in word * @x: the word to search * * This is defined in a similar way as the libc and compiler builtin * ffs, but returns the position of the most significant set bit. * * fls(value) returns 0 if value is 0 or the position of the last * set bit if value is nonzero. The last (most significant) bit is * at position 32. */ static __always_inline __attribute_const__ int fls(unsigned int x) { int r; if (__builtin_constant_p(x)) return x ? 32 - __builtin_clz(x) : 0; #ifdef CONFIG_X86_64 /* * AMD64 says BSRL won't clobber the dest reg if x==0; Intel64 says the * dest reg is undefined if x==0, but their CPU architect says its * value is written to set it to the same as before, except that the * top 32 bits will be cleared. * * We cannot do this on 32 bits because at the very least some * 486 CPUs did not behave this way. */ asm("bsrl %1,%0" : "=r" (r) : ASM_INPUT_RM (x), "0" (-1)); #elif defined(CONFIG_X86_CMOV) asm("bsrl %1,%0\n\t" "cmovzl %2,%0" : "=&r" (r) : "rm" (x), "rm" (-1)); #else asm("bsrl %1,%0\n\t" "jnz 1f\n\t" "movl $-1,%0\n" "1:" : "=r" (r) : "rm" (x)); #endif return r + 1; } /** * fls64 - find last set bit in a 64-bit word * @x: the word to search * * This is defined in a similar way as the libc and compiler builtin * ffsll, but returns the position of the most significant set bit. * * fls64(value) returns 0 if value is 0 or the position of the last * set bit if value is nonzero. The last (most significant) bit is * at position 64. */ #ifdef CONFIG_X86_64 static __always_inline __attribute_const__ int fls64(__u64 x) { int bitpos = -1; if (__builtin_constant_p(x)) return x ? 64 - __builtin_clzll(x) : 0; /* * AMD64 says BSRQ won't clobber the dest reg if x==0; Intel64 says the * dest reg is undefined if x==0, but their CPU architect says its * value is written to set it to the same as before. */ asm("bsrq %1,%q0" : "+r" (bitpos) : ASM_INPUT_RM (x)); return bitpos + 1; } #else #include <asm-generic/bitops/fls64.h> #endif #include <asm-generic/bitops/sched.h> #include <asm/arch_hweight.h> #include <asm-generic/bitops/const_hweight.h> #include <asm-generic/bitops/instrumented-atomic.h> #include <asm-generic/bitops/instrumented-non-atomic.h> #include <asm-generic/bitops/instrumented-lock.h> #include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic-setbit.h> #endif /* __KERNEL__ */ #endif /* _ASM_X86_BITOPS_H */ |
| 2 76 76 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_HEX_H #define _LINUX_HEX_H #include <linux/types.h> extern const char hex_asc[]; #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] static inline char *hex_byte_pack(char *buf, u8 byte) { *buf++ = hex_asc_hi(byte); *buf++ = hex_asc_lo(byte); return buf; } extern const char hex_asc_upper[]; #define hex_asc_upper_lo(x) hex_asc_upper[((x) & 0x0f)] #define hex_asc_upper_hi(x) hex_asc_upper[((x) & 0xf0) >> 4] static inline char *hex_byte_pack_upper(char *buf, u8 byte) { *buf++ = hex_asc_upper_hi(byte); *buf++ = hex_asc_upper_lo(byte); return buf; } extern int hex_to_bin(unsigned char ch); extern int __must_check hex2bin(u8 *dst, const char *src, size_t count); extern char *bin2hex(char *dst, const void *src, size_t count); bool mac_pton(const char *s, u8 *mac); #endif |
| 7 7 7 7 7 7 7 7 7 32 7 7 7 32 32 32 7 7 7 7 30 30 7 7 7 7 30 7 23 7 30 30 8 8 22 8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Digital Audio (PCM) abstract layer * Copyright (c) by Jaroslav Kysela <perex@perex.cz> */ #include <linux/io.h> #include <linux/time.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/moduleparam.h> #include <linux/export.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/info.h> #include <sound/initval.h> #include "pcm_local.h" static int preallocate_dma = 1; module_param(preallocate_dma, int, 0444); MODULE_PARM_DESC(preallocate_dma, "Preallocate DMA memory when the PCM devices are initialized."); static int maximum_substreams = 4; module_param(maximum_substreams, int, 0444); MODULE_PARM_DESC(maximum_substreams, "Maximum substreams with preallocated DMA memory."); static const size_t snd_minimum_buffer = 16384; static unsigned long max_alloc_per_card = 32UL * 1024UL * 1024UL; module_param(max_alloc_per_card, ulong, 0644); MODULE_PARM_DESC(max_alloc_per_card, "Max total allocation bytes per card."); static void __update_allocated_size(struct snd_card *card, ssize_t bytes) { card->total_pcm_alloc_bytes += bytes; } static void update_allocated_size(struct snd_card *card, ssize_t bytes) { guard(mutex)(&card->memory_mutex); __update_allocated_size(card, bytes); } static void decrease_allocated_size(struct snd_card *card, size_t bytes) { guard(mutex)(&card->memory_mutex); WARN_ON(card->total_pcm_alloc_bytes < bytes); __update_allocated_size(card, -(ssize_t)bytes); } static int do_alloc_pages(struct snd_card *card, int type, struct device *dev, int str, size_t size, struct snd_dma_buffer *dmab) { enum dma_data_direction dir; int err; /* check and reserve the requested size */ scoped_guard(mutex, &card->memory_mutex) { if (max_alloc_per_card && card->total_pcm_alloc_bytes + size > max_alloc_per_card) return -ENOMEM; __update_allocated_size(card, size); } if (str == SNDRV_PCM_STREAM_PLAYBACK) dir = DMA_TO_DEVICE; else dir = DMA_FROM_DEVICE; err = snd_dma_alloc_dir_pages(type, dev, dir, size, dmab); if (!err) { /* the actual allocation size might be bigger than requested, * and we need to correct the account */ if (dmab->bytes != size) update_allocated_size(card, dmab->bytes - size); } else { /* take back on allocation failure */ decrease_allocated_size(card, size); } return err; } static void do_free_pages(struct snd_card *card, struct snd_dma_buffer *dmab) { if (!dmab->area) return; decrease_allocated_size(card, dmab->bytes); snd_dma_free_pages(dmab); dmab->area = NULL; } /* * try to allocate as the large pages as possible. * stores the resultant memory size in *res_size. * * the minimum size is snd_minimum_buffer. it should be power of 2. */ static int preallocate_pcm_pages(struct snd_pcm_substream *substream, size_t size, bool no_fallback) { struct snd_dma_buffer *dmab = &substream->dma_buffer; struct snd_card *card = substream->pcm->card; size_t orig_size = size; int err; do { err = do_alloc_pages(card, dmab->dev.type, dmab->dev.dev, substream->stream, size, dmab); if (err != -ENOMEM) return err; if (no_fallback) break; size >>= 1; } while (size >= snd_minimum_buffer); dmab->bytes = 0; /* tell error */ pr_warn("ALSA pcmC%dD%d%c,%d:%s: cannot preallocate for size %zu\n", substream->pcm->card->number, substream->pcm->device, substream->stream ? 'c' : 'p', substream->number, substream->pcm->name, orig_size); return -ENOMEM; } /** * snd_pcm_lib_preallocate_free - release the preallocated buffer of the specified substream. * @substream: the pcm substream instance * * Releases the pre-allocated buffer of the given substream. */ void snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream) { do_free_pages(substream->pcm->card, &substream->dma_buffer); } /** * snd_pcm_lib_preallocate_free_for_all - release all pre-allocated buffers on the pcm * @pcm: the pcm instance * * Releases all the pre-allocated buffers on the given pcm. */ void snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm) { struct snd_pcm_substream *substream; int stream; for_each_pcm_substream(pcm, stream, substream) snd_pcm_lib_preallocate_free(substream); } EXPORT_SYMBOL(snd_pcm_lib_preallocate_free_for_all); #ifdef CONFIG_SND_VERBOSE_PROCFS /* * read callback for prealloc proc file * * prints the current allocated size in kB. */ static void snd_pcm_lib_preallocate_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_pcm_substream *substream = entry->private_data; snd_iprintf(buffer, "%lu\n", (unsigned long) substream->dma_buffer.bytes / 1024); } /* * read callback for prealloc_max proc file * * prints the maximum allowed size in kB. */ static void snd_pcm_lib_preallocate_max_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_pcm_substream *substream = entry->private_data; snd_iprintf(buffer, "%lu\n", (unsigned long) substream->dma_max / 1024); } /* * write callback for prealloc proc file * * accepts the preallocation size in kB. */ static void snd_pcm_lib_preallocate_proc_write(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_pcm_substream *substream = entry->private_data; struct snd_card *card = substream->pcm->card; char line[64], str[64]; unsigned long size; struct snd_dma_buffer new_dmab; guard(mutex)(&substream->pcm->open_mutex); if (substream->runtime) { buffer->error = -EBUSY; return; } if (!snd_info_get_line(buffer, line, sizeof(line))) { snd_info_get_str(str, line, sizeof(str)); buffer->error = kstrtoul(str, 10, &size); if (buffer->error != 0) return; size *= 1024; if ((size != 0 && size < 8192) || size > substream->dma_max) { buffer->error = -EINVAL; return; } if (substream->dma_buffer.bytes == size) return; memset(&new_dmab, 0, sizeof(new_dmab)); new_dmab.dev = substream->dma_buffer.dev; if (size > 0) { if (do_alloc_pages(card, substream->dma_buffer.dev.type, substream->dma_buffer.dev.dev, substream->stream, size, &new_dmab) < 0) { buffer->error = -ENOMEM; pr_debug("ALSA pcmC%dD%d%c,%d:%s: cannot preallocate for size %lu\n", substream->pcm->card->number, substream->pcm->device, substream->stream ? 'c' : 'p', substream->number, substream->pcm->name, size); return; } substream->buffer_bytes_max = size; } else { substream->buffer_bytes_max = UINT_MAX; } if (substream->dma_buffer.area) do_free_pages(card, &substream->dma_buffer); substream->dma_buffer = new_dmab; } else { buffer->error = -EINVAL; } } static inline void preallocate_info_init(struct snd_pcm_substream *substream) { struct snd_info_entry *entry; entry = snd_info_create_card_entry(substream->pcm->card, "prealloc", substream->proc_root); if (entry) { snd_info_set_text_ops(entry, substream, snd_pcm_lib_preallocate_proc_read); entry->c.text.write = snd_pcm_lib_preallocate_proc_write; entry->mode |= 0200; } entry = snd_info_create_card_entry(substream->pcm->card, "prealloc_max", substream->proc_root); if (entry) snd_info_set_text_ops(entry, substream, snd_pcm_lib_preallocate_max_proc_read); } #else /* !CONFIG_SND_VERBOSE_PROCFS */ static inline void preallocate_info_init(struct snd_pcm_substream *substream) { } #endif /* CONFIG_SND_VERBOSE_PROCFS */ /* * pre-allocate the buffer and create a proc file for the substream */ static int preallocate_pages(struct snd_pcm_substream *substream, int type, struct device *data, size_t size, size_t max, bool managed) { int err; if (snd_BUG_ON(substream->dma_buffer.dev.type)) return -EINVAL; substream->dma_buffer.dev.type = type; substream->dma_buffer.dev.dev = data; if (size > 0) { if (!max) { /* no fallback, only also inform -ENOMEM */ err = preallocate_pcm_pages(substream, size, true); if (err < 0) return err; } else if (preallocate_dma && substream->number < maximum_substreams) { err = preallocate_pcm_pages(substream, size, false); if (err < 0 && err != -ENOMEM) return err; } } if (substream->dma_buffer.bytes > 0) substream->buffer_bytes_max = substream->dma_buffer.bytes; substream->dma_max = max; if (max > 0) preallocate_info_init(substream); if (managed) substream->managed_buffer_alloc = 1; return 0; } static int preallocate_pages_for_all(struct snd_pcm *pcm, int type, void *data, size_t size, size_t max, bool managed) { struct snd_pcm_substream *substream; int stream, err; for_each_pcm_substream(pcm, stream, substream) { err = preallocate_pages(substream, type, data, size, max, managed); if (err < 0) return err; } return 0; } /** * snd_pcm_lib_preallocate_pages - pre-allocation for the given DMA type * @substream: the pcm substream instance * @type: DMA type (SNDRV_DMA_TYPE_*) * @data: DMA type dependent data * @size: the requested pre-allocation size in bytes * @max: the max. allowed pre-allocation size * * Do pre-allocation for the given DMA buffer type. */ void snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream, int type, struct device *data, size_t size, size_t max) { preallocate_pages(substream, type, data, size, max, false); } EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages); /** * snd_pcm_lib_preallocate_pages_for_all - pre-allocation for continuous memory type (all substreams) * @pcm: the pcm instance * @type: DMA type (SNDRV_DMA_TYPE_*) * @data: DMA type dependent data * @size: the requested pre-allocation size in bytes * @max: the max. allowed pre-allocation size * * Do pre-allocation to all substreams of the given pcm for the * specified DMA type. */ void snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, int type, void *data, size_t size, size_t max) { preallocate_pages_for_all(pcm, type, data, size, max, false); } EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages_for_all); /** * snd_pcm_set_managed_buffer - set up buffer management for a substream * @substream: the pcm substream instance * @type: DMA type (SNDRV_DMA_TYPE_*) * @data: DMA type dependent data * @size: the requested pre-allocation size in bytes * @max: the max. allowed pre-allocation size * * Do pre-allocation for the given DMA buffer type, and set the managed * buffer allocation mode to the given substream. * In this mode, PCM core will allocate a buffer automatically before PCM * hw_params ops call, and release the buffer after PCM hw_free ops call * as well, so that the driver doesn't need to invoke the allocation and * the release explicitly in its callback. * When a buffer is actually allocated before the PCM hw_params call, it * turns on the runtime buffer_changed flag for drivers changing their h/w * parameters accordingly. * * When @size is non-zero and @max is zero, this tries to allocate for only * the exact buffer size without fallback, and may return -ENOMEM. * Otherwise, the function tries to allocate smaller chunks if the allocation * fails. This is the behavior of snd_pcm_set_fixed_buffer(). * * When both @size and @max are zero, the function only sets up the buffer * for later dynamic allocations. It's used typically for buffers with * SNDRV_DMA_TYPE_VMALLOC type. * * Upon successful buffer allocation and setup, the function returns 0. * * Return: zero if successful, or a negative error code */ int snd_pcm_set_managed_buffer(struct snd_pcm_substream *substream, int type, struct device *data, size_t size, size_t max) { return preallocate_pages(substream, type, data, size, max, true); } EXPORT_SYMBOL(snd_pcm_set_managed_buffer); /** * snd_pcm_set_managed_buffer_all - set up buffer management for all substreams * for all substreams * @pcm: the pcm instance * @type: DMA type (SNDRV_DMA_TYPE_*) * @data: DMA type dependent data * @size: the requested pre-allocation size in bytes * @max: the max. allowed pre-allocation size * * Do pre-allocation to all substreams of the given pcm for the specified DMA * type and size, and set the managed_buffer_alloc flag to each substream. * * Return: zero if successful, or a negative error code */ int snd_pcm_set_managed_buffer_all(struct snd_pcm *pcm, int type, struct device *data, size_t size, size_t max) { return preallocate_pages_for_all(pcm, type, data, size, max, true); } EXPORT_SYMBOL(snd_pcm_set_managed_buffer_all); /** * snd_pcm_lib_malloc_pages - allocate the DMA buffer * @substream: the substream to allocate the DMA buffer to * @size: the requested buffer size in bytes * * Allocates the DMA buffer on the BUS type given earlier to * snd_pcm_lib_preallocate_xxx_pages(). * * Return: 1 if the buffer is changed, 0 if not changed, or a negative * code on failure. */ int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size) { struct snd_card *card; struct snd_pcm_runtime *runtime; struct snd_dma_buffer *dmab = NULL; if (PCM_RUNTIME_CHECK(substream)) return -EINVAL; if (snd_BUG_ON(substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_UNKNOWN)) return -EINVAL; runtime = substream->runtime; card = substream->pcm->card; if (runtime->dma_buffer_p) { /* perphaps, we might free the large DMA memory region to save some space here, but the actual solution costs us less time */ if (runtime->dma_buffer_p->bytes >= size) { runtime->dma_bytes = size; return 0; /* ok, do not change */ } snd_pcm_lib_free_pages(substream); } if (substream->dma_buffer.area != NULL && substream->dma_buffer.bytes >= size) { dmab = &substream->dma_buffer; /* use the pre-allocated buffer */ } else { /* dma_max=0 means the fixed size preallocation */ if (substream->dma_buffer.area && !substream->dma_max) return -ENOMEM; dmab = kzalloc(sizeof(*dmab), GFP_KERNEL); if (! dmab) return -ENOMEM; dmab->dev = substream->dma_buffer.dev; if (do_alloc_pages(card, substream->dma_buffer.dev.type, substream->dma_buffer.dev.dev, substream->stream, size, dmab) < 0) { kfree(dmab); pr_debug("ALSA pcmC%dD%d%c,%d:%s: cannot allocate for size %zu\n", substream->pcm->card->number, substream->pcm->device, substream->stream ? 'c' : 'p', substream->number, substream->pcm->name, size); return -ENOMEM; } } snd_pcm_set_runtime_buffer(substream, dmab); runtime->dma_bytes = size; return 1; /* area was changed */ } EXPORT_SYMBOL(snd_pcm_lib_malloc_pages); /** * snd_pcm_lib_free_pages - release the allocated DMA buffer. * @substream: the substream to release the DMA buffer * * Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages(). * * Return: Zero if successful, or a negative error code on failure. */ int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime; if (PCM_RUNTIME_CHECK(substream)) return -EINVAL; runtime = substream->runtime; if (runtime->dma_area == NULL) return 0; if (runtime->dma_buffer_p != &substream->dma_buffer) { struct snd_card *card = substream->pcm->card; /* it's a newly allocated buffer. release it now. */ do_free_pages(card, runtime->dma_buffer_p); kfree(runtime->dma_buffer_p); } snd_pcm_set_runtime_buffer(substream, NULL); return 0; } EXPORT_SYMBOL(snd_pcm_lib_free_pages); |
| 2 2 2 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 | // SPDX-License-Identifier: GPL-2.0+ /* * spcp8x5 USB to serial adaptor driver * * Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com) * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn) * Copyright (C) 2006 S1 Corp. * * Original driver for 2.6.10 pl2303 driver by * Greg Kroah-Hartman (greg@kroah.com) * Changes for 2.6.20 by Harald Klein <hari@vt100.at> */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/tty.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/spinlock.h> #include <linux/usb.h> #include <linux/usb/serial.h> #define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver" #define SPCP825_QUIRK_NO_UART_STATUS 0x01 #define SPCP825_QUIRK_NO_WORK_MODE 0x02 #define SPCP8x5_007_VID 0x04FC #define SPCP8x5_007_PID 0x0201 #define SPCP8x5_008_VID 0x04fc #define SPCP8x5_008_PID 0x0235 #define SPCP8x5_PHILIPS_VID 0x0471 #define SPCP8x5_PHILIPS_PID 0x081e #define SPCP8x5_INTERMATIC_VID 0x04FC #define SPCP8x5_INTERMATIC_PID 0x0204 #define SPCP8x5_835_VID 0x04fc #define SPCP8x5_835_PID 0x0231 static const struct usb_device_id id_table[] = { { USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)}, { USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)}, { USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)}, { USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)}, { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID), .driver_info = SPCP825_QUIRK_NO_UART_STATUS | SPCP825_QUIRK_NO_WORK_MODE }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table); /* spcp8x5 spec register define */ #define MCR_CONTROL_LINE_RTS 0x02 #define MCR_CONTROL_LINE_DTR 0x01 #define MCR_DTR 0x01 #define MCR_RTS 0x02 #define MSR_STATUS_LINE_DCD 0x80 #define MSR_STATUS_LINE_RI 0x40 #define MSR_STATUS_LINE_DSR 0x20 #define MSR_STATUS_LINE_CTS 0x10 /* verdor command here , we should define myself */ #define SET_DEFAULT 0x40 #define SET_DEFAULT_TYPE 0x20 #define SET_UART_FORMAT 0x40 #define SET_UART_FORMAT_TYPE 0x21 #define SET_UART_FORMAT_SIZE_5 0x00 #define SET_UART_FORMAT_SIZE_6 0x01 #define SET_UART_FORMAT_SIZE_7 0x02 #define SET_UART_FORMAT_SIZE_8 0x03 #define SET_UART_FORMAT_STOP_1 0x00 #define SET_UART_FORMAT_STOP_2 0x04 #define SET_UART_FORMAT_PAR_NONE 0x00 #define SET_UART_FORMAT_PAR_ODD 0x10 #define SET_UART_FORMAT_PAR_EVEN 0x30 #define SET_UART_FORMAT_PAR_MASK 0xD0 #define SET_UART_FORMAT_PAR_SPACE 0x90 #define GET_UART_STATUS_TYPE 0xc0 #define GET_UART_STATUS 0x22 #define GET_UART_STATUS_MSR 0x06 #define SET_UART_STATUS 0x40 #define SET_UART_STATUS_TYPE 0x23 #define SET_UART_STATUS_MCR 0x0004 #define SET_UART_STATUS_MCR_DTR 0x01 #define SET_UART_STATUS_MCR_RTS 0x02 #define SET_UART_STATUS_MCR_LOOP 0x10 #define SET_WORKING_MODE 0x40 #define SET_WORKING_MODE_TYPE 0x24 #define SET_WORKING_MODE_U2C 0x00 #define SET_WORKING_MODE_RS485 0x01 #define SET_WORKING_MODE_PDMA 0x02 #define SET_WORKING_MODE_SPP 0x03 #define SET_FLOWCTL_CHAR 0x40 #define SET_FLOWCTL_CHAR_TYPE 0x25 #define GET_VERSION 0xc0 #define GET_VERSION_TYPE 0x26 #define SET_REGISTER 0x40 #define SET_REGISTER_TYPE 0x27 #define GET_REGISTER 0xc0 #define GET_REGISTER_TYPE 0x28 #define SET_RAM 0x40 #define SET_RAM_TYPE 0x31 #define GET_RAM 0xc0 #define GET_RAM_TYPE 0x32 /* how come ??? */ #define UART_STATE 0x08 #define UART_STATE_TRANSIENT_MASK 0x75 #define UART_DCD 0x01 #define UART_DSR 0x02 #define UART_BREAK_ERROR 0x04 #define UART_RING 0x08 #define UART_FRAME_ERROR 0x10 #define UART_PARITY_ERROR 0x20 #define UART_OVERRUN_ERROR 0x40 #define UART_CTS 0x80 struct spcp8x5_private { unsigned quirks; spinlock_t lock; u8 line_control; }; static int spcp8x5_probe(struct usb_serial *serial, const struct usb_device_id *id) { usb_set_serial_data(serial, (void *)id); return 0; } static int spcp8x5_port_probe(struct usb_serial_port *port) { const struct usb_device_id *id = usb_get_serial_data(port->serial); struct spcp8x5_private *priv; priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; spin_lock_init(&priv->lock); priv->quirks = id->driver_info; usb_set_serial_port_data(port, priv); port->port.drain_delay = 256; return 0; } static void spcp8x5_port_remove(struct usb_serial_port *port) { struct spcp8x5_private *priv; priv = usb_get_serial_port_data(port); kfree(priv); } static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr) { struct spcp8x5_private *priv = usb_get_serial_port_data(port); struct usb_device *dev = port->serial->dev; int retval; if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS) return -EPERM; retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_UART_STATUS_TYPE, SET_UART_STATUS, mcr, 0x04, NULL, 0, 100); if (retval != 0) { dev_err(&port->dev, "failed to set control lines: %d\n", retval); } return retval; } static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status) { struct spcp8x5_private *priv = usb_get_serial_port_data(port); struct usb_device *dev = port->serial->dev; u8 *buf; int ret; if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS) return -EPERM; buf = kzalloc(1, GFP_KERNEL); if (!buf) return -ENOMEM; ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_UART_STATUS, GET_UART_STATUS_TYPE, 0, GET_UART_STATUS_MSR, buf, 1, 100); if (ret < 1) { dev_err(&port->dev, "failed to get modem status: %d\n", ret); if (ret >= 0) ret = -EIO; goto out; } dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf); *status = *buf; ret = 0; out: kfree(buf); return ret; } static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value, u16 index) { struct spcp8x5_private *priv = usb_get_serial_port_data(port); struct usb_device *dev = port->serial->dev; int ret; if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE) return; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_WORKING_MODE_TYPE, SET_WORKING_MODE, value, index, NULL, 0, 100); dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index); if (ret < 0) dev_err(&port->dev, "failed to set work mode: %d\n", ret); } static int spcp8x5_carrier_raised(struct usb_serial_port *port) { u8 msr; int ret; ret = spcp8x5_get_msr(port, &msr); if (ret || msr & MSR_STATUS_LINE_DCD) return 1; return 0; } static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) { struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; u8 control; spin_lock_irqsave(&priv->lock, flags); if (on) priv->line_control = MCR_CONTROL_LINE_DTR | MCR_CONTROL_LINE_RTS; else priv->line_control &= ~ (MCR_CONTROL_LINE_DTR | MCR_CONTROL_LINE_RTS); control = priv->line_control; spin_unlock_irqrestore(&priv->lock, flags); spcp8x5_set_ctrl_line(port, control); } static void spcp8x5_init_termios(struct tty_struct *tty) { tty_encode_baud_rate(tty, 115200, 115200); } static void spcp8x5_set_termios(struct tty_struct *tty, struct usb_serial_port *port, const struct ktermios *old_termios) { struct usb_serial *serial = port->serial; struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; unsigned int cflag = tty->termios.c_cflag; unsigned short uartdata; unsigned char buf[2] = {0, 0}; int baud; int i; u8 control; /* check that they really want us to change something */ if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* set DTR/RTS active */ spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; if (old_termios && (old_termios->c_cflag & CBAUD) == B0) { priv->line_control |= MCR_DTR; if (!(old_termios->c_cflag & CRTSCTS)) priv->line_control |= MCR_RTS; } if (control != priv->line_control) { control = priv->line_control; spin_unlock_irqrestore(&priv->lock, flags); spcp8x5_set_ctrl_line(port, control); } else { spin_unlock_irqrestore(&priv->lock, flags); } /* Set Baud Rate */ baud = tty_get_baud_rate(tty); switch (baud) { case 300: buf[0] = 0x00; break; case 600: buf[0] = 0x01; break; case 1200: buf[0] = 0x02; break; case 2400: buf[0] = 0x03; break; case 4800: buf[0] = 0x04; break; case 9600: buf[0] = 0x05; break; case 19200: buf[0] = 0x07; break; case 38400: buf[0] = 0x09; break; case 57600: buf[0] = 0x0a; break; case 115200: buf[0] = 0x0b; break; case 230400: buf[0] = 0x0c; break; case 460800: buf[0] = 0x0d; break; case 921600: buf[0] = 0x0e; break; /* case 1200000: buf[0] = 0x0f; break; */ /* case 2400000: buf[0] = 0x10; break; */ case 3000000: buf[0] = 0x11; break; /* case 6000000: buf[0] = 0x12; break; */ case 0: case 1000000: buf[0] = 0x0b; break; default: dev_err(&port->dev, "unsupported baudrate, using 9600\n"); } /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */ switch (cflag & CSIZE) { case CS5: buf[1] |= SET_UART_FORMAT_SIZE_5; break; case CS6: buf[1] |= SET_UART_FORMAT_SIZE_6; break; case CS7: buf[1] |= SET_UART_FORMAT_SIZE_7; break; default: case CS8: buf[1] |= SET_UART_FORMAT_SIZE_8; break; } /* Set Stop bit2 : 0:1bit 1:2bit */ buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 : SET_UART_FORMAT_STOP_1; /* Set Parity bit3-4 01:Odd 11:Even */ if (cflag & PARENB) { buf[1] |= (cflag & PARODD) ? SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ; } else { buf[1] |= SET_UART_FORMAT_PAR_NONE; } uartdata = buf[0] | buf[1]<<8; i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), SET_UART_FORMAT_TYPE, SET_UART_FORMAT, uartdata, 0, NULL, 0, 100); if (i < 0) dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n", uartdata, i); dev_dbg(&port->dev, "0x21:0x40:0:0 %d\n", i); if (cflag & CRTSCTS) { /* enable hardware flow control */ spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C); } } static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct spcp8x5_private *priv = usb_get_serial_port_data(port); int ret; usb_clear_halt(serial->dev, port->write_urb->pipe); usb_clear_halt(serial->dev, port->read_urb->pipe); ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 0x09, 0x00, 0x01, 0x00, NULL, 0x00, 100); if (ret) return ret; spcp8x5_set_ctrl_line(port, priv->line_control); if (tty) spcp8x5_set_termios(tty, port, NULL); return usb_serial_generic_open(tty, port); } static int spcp8x5_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; u8 control; spin_lock_irqsave(&priv->lock, flags); if (set & TIOCM_RTS) priv->line_control |= MCR_RTS; if (set & TIOCM_DTR) priv->line_control |= MCR_DTR; if (clear & TIOCM_RTS) priv->line_control &= ~MCR_RTS; if (clear & TIOCM_DTR) priv->line_control &= ~MCR_DTR; control = priv->line_control; spin_unlock_irqrestore(&priv->lock, flags); return spcp8x5_set_ctrl_line(port, control); } static int spcp8x5_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; unsigned int mcr; u8 status; unsigned int result; result = spcp8x5_get_msr(port, &status); if (result) return result; spin_lock_irqsave(&priv->lock, flags); mcr = priv->line_control; spin_unlock_irqrestore(&priv->lock, flags); result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0) | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0) | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0) | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0); return result; } static struct usb_serial_driver spcp8x5_device = { .driver = { .name = "SPCP8x5", }, .id_table = id_table, .num_ports = 1, .num_bulk_in = 1, .num_bulk_out = 1, .open = spcp8x5_open, .dtr_rts = spcp8x5_dtr_rts, .carrier_raised = spcp8x5_carrier_raised, .set_termios = spcp8x5_set_termios, .init_termios = spcp8x5_init_termios, .tiocmget = spcp8x5_tiocmget, .tiocmset = spcp8x5_tiocmset, .probe = spcp8x5_probe, .port_probe = spcp8x5_port_probe, .port_remove = spcp8x5_port_remove, }; static struct usb_serial_driver * const serial_drivers[] = { &spcp8x5_device, NULL }; module_usb_serial_driver(serial_drivers, id_table); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); |
| 145 145 72 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_TASK_H #define _LINUX_SCHED_TASK_H /* * Interface between the scheduler and various task lifetime (fork()/exit()) * functionality: */ #include <linux/rcupdate.h> #include <linux/refcount.h> #include <linux/sched.h> #include <linux/uaccess.h> struct task_struct; struct rusage; union thread_union; struct css_set; /* All the bits taken by the old clone syscall. */ #define CLONE_LEGACY_FLAGS 0xffffffffULL struct kernel_clone_args { u64 flags; int __user *pidfd; int __user *child_tid; int __user *parent_tid; const char *name; int exit_signal; u32 kthread:1; u32 io_thread:1; u32 user_worker:1; u32 no_files:1; unsigned long stack; unsigned long stack_size; unsigned long tls; pid_t *set_tid; /* Number of elements in *set_tid */ size_t set_tid_size; int cgroup; int idle; int (*fn)(void *); void *fn_arg; struct cgroup *cgrp; struct css_set *cset; unsigned int kill_seq; }; /* * This serializes "schedule()" and also protects * the run-queue from deletions/modifications (but * _adding_ to the beginning of the run-queue has * a separate lock). */ extern rwlock_t tasklist_lock; extern spinlock_t mmlist_lock; extern union thread_union init_thread_union; extern struct task_struct init_task; extern int lockdep_tasklist_lock_is_held(void); extern asmlinkage void schedule_tail(struct task_struct *prev); extern void init_idle(struct task_struct *idle, int cpu); extern int sched_fork(u64 clone_flags, struct task_struct *p); extern int sched_cgroup_fork(struct task_struct *p, struct kernel_clone_args *kargs); extern void sched_cancel_fork(struct task_struct *p); extern void sched_post_fork(struct task_struct *p); extern void sched_dead(struct task_struct *p); void __noreturn do_task_dead(void); void __noreturn make_task_dead(int signr); extern void mm_cache_init(void); extern void proc_caches_init(void); extern void fork_init(void); extern void release_task(struct task_struct * p); extern int copy_thread(struct task_struct *, const struct kernel_clone_args *); extern void flush_thread(void); #ifdef CONFIG_HAVE_EXIT_THREAD extern void exit_thread(struct task_struct *tsk); #else static inline void exit_thread(struct task_struct *tsk) { } #endif extern __noreturn void do_group_exit(int); extern void exit_files(struct task_struct *); extern void exit_itimers(struct task_struct *); extern pid_t kernel_clone(struct kernel_clone_args *kargs); struct task_struct *copy_process(struct pid *pid, int trace, int node, struct kernel_clone_args *args); struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node); struct task_struct *fork_idle(int); extern pid_t kernel_thread(int (*fn)(void *), void *arg, const char *name, unsigned long flags); extern pid_t user_mode_thread(int (*fn)(void *), void *arg, unsigned long flags); extern long kernel_wait4(pid_t, int __user *, int, struct rusage *); int kernel_wait(pid_t pid, int *stat); extern void free_task(struct task_struct *tsk); /* sched_exec is called by processes performing an exec */ extern void sched_exec(void); static inline struct task_struct *get_task_struct(struct task_struct *t) { refcount_inc(&t->usage); return t; } static inline struct task_struct *tryget_task_struct(struct task_struct *t) { return refcount_inc_not_zero(&t->usage) ? t : NULL; } extern void __put_task_struct(struct task_struct *t); extern void __put_task_struct_rcu_cb(struct rcu_head *rhp); static inline void put_task_struct(struct task_struct *t) { if (!refcount_dec_and_test(&t->usage)) return; /* * Under PREEMPT_RT, we can't call __put_task_struct * in atomic context because it will indirectly * acquire sleeping locks. The same is true if the * current process has a mutex enqueued (blocked on * a PI chain). * * In !RT, it is always safe to call __put_task_struct(). * Though, in order to simplify the code, resort to the * deferred call too. * * call_rcu() will schedule __put_task_struct_rcu_cb() * to be called in process context. * * __put_task_struct() is called when * refcount_dec_and_test(&t->usage) succeeds. * * This means that it can't "conflict" with * put_task_struct_rcu_user() which abuses ->rcu the same * way; rcu_users has a reference so task->usage can't be * zero after rcu_users 1 -> 0 transition. * * delayed_free_task() also uses ->rcu, but it is only called * when it fails to fork a process. Therefore, there is no * way it can conflict with __put_task_struct(). */ call_rcu(&t->rcu, __put_task_struct_rcu_cb); } DEFINE_FREE(put_task, struct task_struct *, if (_T) put_task_struct(_T)) static inline void put_task_struct_many(struct task_struct *t, int nr) { if (refcount_sub_and_test(nr, &t->usage)) __put_task_struct(t); } void put_task_struct_rcu_user(struct task_struct *task); /* Free all architecture-specific resources held by a thread. */ void release_thread(struct task_struct *dead_task); #ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT extern int arch_task_struct_size __read_mostly; #else # define arch_task_struct_size (sizeof(struct task_struct)) #endif #ifndef CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST /* * If an architecture has not declared a thread_struct whitelist we * must assume something there may need to be copied to userspace. */ static inline void arch_thread_struct_whitelist(unsigned long *offset, unsigned long *size) { *offset = 0; /* Handle dynamically sized thread_struct. */ *size = arch_task_struct_size - offsetof(struct task_struct, thread); } #endif #ifdef CONFIG_VMAP_STACK static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t) { return t->stack_vm_area; } #else static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t) { return NULL; } #endif /* * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring * subscriptions and synchronises with wait4(). Also used in procfs. Also * pins the final release of task.io_context. Also protects ->cpuset and * ->cgroup.subsys[]. And ->vfork_done. And ->sysvshm.shm_clist. * * Nests inside of read_lock(&tasklist_lock). It must not be nested with * write_lock_irq(&tasklist_lock), neither inside nor outside. */ static inline void task_lock(struct task_struct *p) { spin_lock(&p->alloc_lock); } static inline void task_unlock(struct task_struct *p) { spin_unlock(&p->alloc_lock); } DEFINE_GUARD(task_lock, struct task_struct *, task_lock(_T), task_unlock(_T)) #endif /* _LINUX_SCHED_TASK_H */ |
| 30 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | // SPDX-License-Identifier: GPL-2.0-or-later /* Linux driver for Philips webcam Decompression for chipset version 1 (C) 2004-2006 Luc Saillard (luc@saillard.org) NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx driver and thus may have bugs that are not present in the original version. Please send bug reports and support requests to <luc@saillard.org>. The decompression routines have been implemented by reverse-engineering the Nemosoft binary pwcx module. Caveat emptor. */ #include "pwc.h" void pwc_dec1_init(struct pwc_device *pdev, const unsigned char *cmd) { struct pwc_dec1_private *pdec = &pdev->dec1; pdec->version = pdev->release; } |
| 1418 1422 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_PAGE_H #define _ASM_X86_PAGE_H #include <linux/types.h> #ifdef __KERNEL__ #include <asm/page_types.h> #ifdef CONFIG_X86_64 #include <asm/page_64.h> #else #include <asm/page_32.h> #endif /* CONFIG_X86_64 */ #ifndef __ASSEMBLER__ struct page; #include <linux/range.h> extern struct range pfn_mapped[]; extern int nr_pfn_mapped; static inline void clear_user_page(void *page, unsigned long vaddr, struct page *pg) { clear_page(page); } static inline void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage) { copy_page(to, from); } #define vma_alloc_zeroed_movable_folio(vma, vaddr) \ vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr) #ifndef __pa #define __pa(x) __phys_addr((unsigned long)(x)) #endif #define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x)) /* __pa_symbol should be used for C visible symbols. This seems to be the official gcc blessed way to do such arithmetic. */ /* * We need __phys_reloc_hide() here because gcc may assume that there is no * overflow during __pa() calculation and can optimize it unexpectedly. * Newer versions of gcc provide -fno-strict-overflow switch to handle this * case properly. Once all supported versions of gcc understand it, we can * remove this Voodoo magic stuff. (i.e. once gcc3.x is deprecated) */ #define __pa_symbol(x) \ __phys_addr_symbol(__phys_reloc_hide((unsigned long)(x))) #ifndef __va #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) #endif #define __boot_va(x) __va(x) #define __boot_pa(x) __pa(x) /* * virt_to_page(kaddr) returns a valid pointer if and only if * virt_addr_valid(kaddr) returns true. */ #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) extern bool __virt_addr_valid(unsigned long kaddr); #define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr)) static __always_inline void *pfn_to_kaddr(unsigned long pfn) { return __va(pfn << PAGE_SHIFT); } static __always_inline u64 __canonical_address(u64 vaddr, u8 vaddr_bits) { return ((s64)vaddr << (64 - vaddr_bits)) >> (64 - vaddr_bits); } static __always_inline u64 __is_canonical_address(u64 vaddr, u8 vaddr_bits) { return __canonical_address(vaddr, vaddr_bits) == vaddr; } #endif /* __ASSEMBLER__ */ #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA #endif /* __KERNEL__ */ #endif /* _ASM_X86_PAGE_H */ |
| 328 253 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_UNALIGNED_H #define __LINUX_UNALIGNED_H /* * This is the most generic implementation of unaligned accesses * and should work almost anywhere. */ #include <linux/unaligned/packed_struct.h> #include <asm/byteorder.h> #include <vdso/unaligned.h> #define get_unaligned(ptr) __get_unaligned_t(typeof(*(ptr)), (ptr)) #define put_unaligned(val, ptr) __put_unaligned_t(typeof(*(ptr)), (val), (ptr)) static inline u16 get_unaligned_le16(const void *p) { return le16_to_cpu(__get_unaligned_t(__le16, p)); } static inline u32 get_unaligned_le32(const void *p) { return le32_to_cpu(__get_unaligned_t(__le32, p)); } static inline u64 get_unaligned_le64(const void *p) { return le64_to_cpu(__get_unaligned_t(__le64, p)); } static inline void put_unaligned_le16(u16 val, void *p) { __put_unaligned_t(__le16, cpu_to_le16(val), p); } static inline void put_unaligned_le32(u32 val, void *p) { __put_unaligned_t(__le32, cpu_to_le32(val), p); } static inline void put_unaligned_le64(u64 val, void *p) { __put_unaligned_t(__le64, cpu_to_le64(val), p); } static inline u16 get_unaligned_be16(const void *p) { return be16_to_cpu(__get_unaligned_t(__be16, p)); } static inline u32 get_unaligned_be32(const void *p) { return be32_to_cpu(__get_unaligned_t(__be32, p)); } static inline u64 get_unaligned_be64(const void *p) { return be64_to_cpu(__get_unaligned_t(__be64, p)); } static inline void put_unaligned_be16(u16 val, void *p) { __put_unaligned_t(__be16, cpu_to_be16(val), p); } static inline void put_unaligned_be32(u32 val, void *p) { __put_unaligned_t(__be32, cpu_to_be32(val), p); } static inline void put_unaligned_be64(u64 val, void *p) { __put_unaligned_t(__be64, cpu_to_be64(val), p); } static inline u32 __get_unaligned_be24(const u8 *p) { return p[0] << 16 | p[1] << 8 | p[2]; } static inline u32 get_unaligned_be24(const void *p) { return __get_unaligned_be24(p); } static inline u32 __get_unaligned_le24(const u8 *p) { return p[0] | p[1] << 8 | p[2] << 16; } static inline u32 get_unaligned_le24(const void *p) { return __get_unaligned_le24(p); } static inline void __put_unaligned_be24(const u32 val, u8 *p) { *p++ = (val >> 16) & 0xff; *p++ = (val >> 8) & 0xff; *p++ = val & 0xff; } static inline void put_unaligned_be24(const u32 val, void *p) { __put_unaligned_be24(val, p); } static inline void __put_unaligned_le24(const u32 val, u8 *p) { *p++ = val & 0xff; *p++ = (val >> 8) & 0xff; *p++ = (val >> 16) & 0xff; } static inline void put_unaligned_le24(const u32 val, void *p) { __put_unaligned_le24(val, p); } static inline void __put_unaligned_be48(const u64 val, u8 *p) { *p++ = (val >> 40) & 0xff; *p++ = (val >> 32) & 0xff; *p++ = (val >> 24) & 0xff; *p++ = (val >> 16) & 0xff; *p++ = (val >> 8) & 0xff; *p++ = val & 0xff; } static inline void put_unaligned_be48(const u64 val, void *p) { __put_unaligned_be48(val, p); } static inline u64 __get_unaligned_be48(const u8 *p) { return (u64)p[0] << 40 | (u64)p[1] << 32 | (u64)p[2] << 24 | p[3] << 16 | p[4] << 8 | p[5]; } static inline u64 get_unaligned_be48(const void *p) { return __get_unaligned_be48(p); } #endif /* __LINUX_UNALIGNED_H */ |
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4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 | // SPDX-License-Identifier: GPL-2.0-only /* * HIDPP protocol for Logitech receivers * * Copyright (c) 2011 Logitech (c) * Copyright (c) 2012-2013 Google (c) * Copyright (c) 2013-2014 Red Hat Inc. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/device.h> #include <linux/input.h> #include <linux/usb.h> #include <linux/hid.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/sched.h> #include <linux/sched/clock.h> #include <linux/kfifo.h> #include <linux/input/mt.h> #include <linux/workqueue.h> #include <linux/atomic.h> #include <linux/fixp-arith.h> #include <linux/unaligned.h> #include "usbhid/usbhid.h" #include "hid-ids.h" MODULE_DESCRIPTION("Support for Logitech devices relying on the HID++ specification"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>"); MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>"); static bool disable_tap_to_click; module_param(disable_tap_to_click, bool, 0644); MODULE_PARM_DESC(disable_tap_to_click, "Disable Tap-To-Click mode reporting for touchpads (only on the K400 currently)."); /* Define a non-zero software ID to identify our own requests */ #define LINUX_KERNEL_SW_ID 0x01 #define REPORT_ID_HIDPP_SHORT 0x10 #define REPORT_ID_HIDPP_LONG 0x11 #define REPORT_ID_HIDPP_VERY_LONG 0x12 #define HIDPP_REPORT_SHORT_LENGTH 7 #define HIDPP_REPORT_LONG_LENGTH 20 #define HIDPP_REPORT_VERY_LONG_MAX_LENGTH 64 #define HIDPP_REPORT_SHORT_SUPPORTED BIT(0) #define HIDPP_REPORT_LONG_SUPPORTED BIT(1) #define HIDPP_REPORT_VERY_LONG_SUPPORTED BIT(2) #define HIDPP_SUB_ID_CONSUMER_VENDOR_KEYS 0x03 #define HIDPP_SUB_ID_ROLLER 0x05 #define HIDPP_SUB_ID_MOUSE_EXTRA_BTNS 0x06 #define HIDPP_SUB_ID_USER_IFACE_EVENT 0x08 #define HIDPP_USER_IFACE_EVENT_ENCRYPTION_KEY_LOST BIT(5) #define HIDPP_QUIRK_CLASS_WTP BIT(0) #define HIDPP_QUIRK_CLASS_M560 BIT(1) #define HIDPP_QUIRK_CLASS_K400 BIT(2) #define HIDPP_QUIRK_CLASS_G920 BIT(3) #define HIDPP_QUIRK_CLASS_K750 BIT(4) /* bits 2..20 are reserved for classes */ /* #define HIDPP_QUIRK_CONNECT_EVENTS BIT(21) disabled */ #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22) #define HIDPP_QUIRK_DELAYED_INIT BIT(23) #define HIDPP_QUIRK_FORCE_OUTPUT_REPORTS BIT(24) #define HIDPP_QUIRK_HIDPP_WHEELS BIT(25) #define HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS BIT(26) #define HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS BIT(27) #define HIDPP_QUIRK_HI_RES_SCROLL_1P0 BIT(28) #define HIDPP_QUIRK_WIRELESS_STATUS BIT(29) /* These are just aliases for now */ #define HIDPP_QUIRK_KBD_SCROLL_WHEEL HIDPP_QUIRK_HIDPP_WHEELS #define HIDPP_QUIRK_KBD_ZOOM_WHEEL HIDPP_QUIRK_HIDPP_WHEELS /* Convenience constant to check for any high-res support. */ #define HIDPP_CAPABILITY_HI_RES_SCROLL (HIDPP_CAPABILITY_HIDPP10_FAST_SCROLL | \ HIDPP_CAPABILITY_HIDPP20_HI_RES_SCROLL | \ HIDPP_CAPABILITY_HIDPP20_HI_RES_WHEEL) #define HIDPP_CAPABILITY_HIDPP10_BATTERY BIT(0) #define HIDPP_CAPABILITY_HIDPP20_BATTERY BIT(1) #define HIDPP_CAPABILITY_BATTERY_MILEAGE BIT(2) #define HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS BIT(3) #define HIDPP_CAPABILITY_BATTERY_VOLTAGE BIT(4) #define HIDPP_CAPABILITY_BATTERY_PERCENTAGE BIT(5) #define HIDPP_CAPABILITY_UNIFIED_BATTERY BIT(6) #define HIDPP_CAPABILITY_HIDPP20_HI_RES_WHEEL BIT(7) #define HIDPP_CAPABILITY_HIDPP20_HI_RES_SCROLL BIT(8) #define HIDPP_CAPABILITY_HIDPP10_FAST_SCROLL BIT(9) #define HIDPP_CAPABILITY_ADC_MEASUREMENT BIT(10) #define lg_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) /* * There are two hidpp protocols in use, the first version hidpp10 is known * as register access protocol or RAP, the second version hidpp20 is known as * feature access protocol or FAP * * Most older devices (including the Unifying usb receiver) use the RAP protocol * where as most newer devices use the FAP protocol. Both protocols are * compatible with the underlying transport, which could be usb, Unifiying, or * bluetooth. The message lengths are defined by the hid vendor specific report * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and * the HIDPP_LONG report type (total message length 20 bytes) * * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG * messages. The Unifying receiver itself responds to RAP messages (device index * is 0xFF for the receiver), and all messages (short or long) with a device * index between 1 and 6 are passed untouched to the corresponding paired * Unifying device. * * The paired device can be RAP or FAP, it will receive the message untouched * from the Unifiying receiver. */ struct fap { u8 feature_index; u8 funcindex_clientid; u8 params[HIDPP_REPORT_VERY_LONG_MAX_LENGTH - 4U]; }; struct rap { u8 sub_id; u8 reg_address; u8 params[HIDPP_REPORT_VERY_LONG_MAX_LENGTH - 4U]; }; struct hidpp_report { u8 report_id; u8 device_index; union { struct fap fap; struct rap rap; u8 rawbytes[sizeof(struct fap)]; }; } __packed; struct hidpp_battery { u8 feature_index; u8 solar_feature_index; u8 voltage_feature_index; u8 adc_measurement_feature_index; struct power_supply_desc desc; struct power_supply *ps; char name[64]; int status; int capacity; int level; int voltage; int charge_type; bool online; u8 supported_levels_1004; }; /** * struct hidpp_scroll_counter - Utility class for processing high-resolution * scroll events. * @dev: the input device for which events should be reported. * @wheel_multiplier: the scalar multiplier to be applied to each wheel event * @remainder: counts the number of high-resolution units moved since the last * low-resolution event (REL_WHEEL or REL_HWHEEL) was sent. Should * only be used by class methods. * @direction: direction of last movement (1 or -1) * @last_time: last event time, used to reset remainder after inactivity */ struct hidpp_scroll_counter { int wheel_multiplier; int remainder; int direction; unsigned long long last_time; }; struct hidpp_device { struct hid_device *hid_dev; struct input_dev *input; struct mutex send_mutex; void *send_receive_buf; char *name; /* will never be NULL and should not be freed */ wait_queue_head_t wait; int very_long_report_length; bool answer_available; u8 protocol_major; u8 protocol_minor; void *private_data; struct work_struct work; struct kfifo delayed_work_fifo; struct input_dev *delayed_input; unsigned long quirks; unsigned long capabilities; u8 supported_reports; struct hidpp_battery battery; struct hidpp_scroll_counter vertical_wheel_counter; u8 wireless_feature_index; bool connected_once; }; /* HID++ 1.0 error codes */ #define HIDPP_ERROR 0x8f #define HIDPP_ERROR_SUCCESS 0x00 #define HIDPP_ERROR_INVALID_SUBID 0x01 #define HIDPP_ERROR_INVALID_ADRESS 0x02 #define HIDPP_ERROR_INVALID_VALUE 0x03 #define HIDPP_ERROR_CONNECT_FAIL 0x04 #define HIDPP_ERROR_TOO_MANY_DEVICES 0x05 #define HIDPP_ERROR_ALREADY_EXISTS 0x06 #define HIDPP_ERROR_BUSY 0x07 #define HIDPP_ERROR_UNKNOWN_DEVICE 0x08 #define HIDPP_ERROR_RESOURCE_ERROR 0x09 #define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a #define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b #define HIDPP_ERROR_WRONG_PIN_CODE 0x0c /* HID++ 2.0 error codes */ #define HIDPP20_ERROR_NO_ERROR 0x00 #define HIDPP20_ERROR_UNKNOWN 0x01 #define HIDPP20_ERROR_INVALID_ARGS 0x02 #define HIDPP20_ERROR_OUT_OF_RANGE 0x03 #define HIDPP20_ERROR_HW_ERROR 0x04 #define HIDPP20_ERROR_NOT_ALLOWED 0x05 #define HIDPP20_ERROR_INVALID_FEATURE_INDEX 0x06 #define HIDPP20_ERROR_INVALID_FUNCTION_ID 0x07 #define HIDPP20_ERROR_BUSY 0x08 #define HIDPP20_ERROR_UNSUPPORTED 0x09 #define HIDPP20_ERROR 0xff static int __hidpp_send_report(struct hid_device *hdev, struct hidpp_report *hidpp_report) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); int fields_count, ret; switch (hidpp_report->report_id) { case REPORT_ID_HIDPP_SHORT: fields_count = HIDPP_REPORT_SHORT_LENGTH; break; case REPORT_ID_HIDPP_LONG: fields_count = HIDPP_REPORT_LONG_LENGTH; break; case REPORT_ID_HIDPP_VERY_LONG: fields_count = hidpp->very_long_report_length; break; default: return -ENODEV; } /* * set the device_index as the receiver, it will be overwritten by * hid_hw_request if needed */ hidpp_report->device_index = 0xff; if (hidpp->quirks & HIDPP_QUIRK_FORCE_OUTPUT_REPORTS) { ret = hid_hw_output_report(hdev, (u8 *)hidpp_report, fields_count); } else { ret = hid_hw_raw_request(hdev, hidpp_report->report_id, (u8 *)hidpp_report, fields_count, HID_OUTPUT_REPORT, HID_REQ_SET_REPORT); } return ret == fields_count ? 0 : -1; } /* * Effectively send the message to the device, waiting for its answer. * * Must be called with hidpp->send_mutex locked * * Same return protocol than hidpp_send_message_sync(): * - success on 0 * - negative error means transport error * - positive value means protocol error */ static int __do_hidpp_send_message_sync(struct hidpp_device *hidpp, struct hidpp_report *message, struct hidpp_report *response) { int ret; __must_hold(&hidpp->send_mutex); hidpp->send_receive_buf = response; hidpp->answer_available = false; /* * So that we can later validate the answer when it arrives * in hidpp_raw_event */ *response = *message; ret = __hidpp_send_report(hidpp->hid_dev, message); if (ret) { dbg_hid("__hidpp_send_report returned err: %d\n", ret); memset(response, 0, sizeof(struct hidpp_report)); return ret; } if (!wait_event_timeout(hidpp->wait, hidpp->answer_available, 5*HZ)) { dbg_hid("%s:timeout waiting for response\n", __func__); memset(response, 0, sizeof(struct hidpp_report)); return -ETIMEDOUT; } if (response->report_id == REPORT_ID_HIDPP_SHORT && response->rap.sub_id == HIDPP_ERROR) { ret = response->rap.params[1]; dbg_hid("%s:got hidpp error %02X\n", __func__, ret); return ret; } if ((response->report_id == REPORT_ID_HIDPP_LONG || response->report_id == REPORT_ID_HIDPP_VERY_LONG) && response->fap.feature_index == HIDPP20_ERROR) { ret = response->fap.params[1]; dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__, ret); return ret; } return 0; } /* * hidpp_send_message_sync() returns 0 in case of success, and something else * in case of a failure. * * See __do_hidpp_send_message_sync() for a detailed explanation of the returned * value. */ static int hidpp_send_message_sync(struct hidpp_device *hidpp, struct hidpp_report *message, struct hidpp_report *response) { int ret; int max_retries = 3; mutex_lock(&hidpp->send_mutex); do { ret = __do_hidpp_send_message_sync(hidpp, message, response); if (ret != HIDPP20_ERROR_BUSY) break; dbg_hid("%s:got busy hidpp 2.0 error %02X, retrying\n", __func__, ret); } while (--max_retries); mutex_unlock(&hidpp->send_mutex); return ret; } /* * hidpp_send_fap_command_sync() returns 0 in case of success, and something else * in case of a failure. * * See __do_hidpp_send_message_sync() for a detailed explanation of the returned * value. */ static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp, u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count, struct hidpp_report *response) { struct hidpp_report *message; int ret; if (param_count > sizeof(message->fap.params)) { hid_dbg(hidpp->hid_dev, "Invalid number of parameters passed to command (%d != %llu)\n", param_count, (unsigned long long) sizeof(message->fap.params)); return -EINVAL; } message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); if (!message) return -ENOMEM; if (param_count > (HIDPP_REPORT_LONG_LENGTH - 4)) message->report_id = REPORT_ID_HIDPP_VERY_LONG; else message->report_id = REPORT_ID_HIDPP_LONG; message->fap.feature_index = feat_index; message->fap.funcindex_clientid = funcindex_clientid | LINUX_KERNEL_SW_ID; memcpy(&message->fap.params, params, param_count); ret = hidpp_send_message_sync(hidpp, message, response); kfree(message); return ret; } /* * hidpp_send_rap_command_sync() returns 0 in case of success, and something else * in case of a failure. * * See __do_hidpp_send_message_sync() for a detailed explanation of the returned * value. */ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev, u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count, struct hidpp_report *response) { struct hidpp_report *message; int ret, max_count; /* Send as long report if short reports are not supported. */ if (report_id == REPORT_ID_HIDPP_SHORT && !(hidpp_dev->supported_reports & HIDPP_REPORT_SHORT_SUPPORTED)) report_id = REPORT_ID_HIDPP_LONG; switch (report_id) { case REPORT_ID_HIDPP_SHORT: max_count = HIDPP_REPORT_SHORT_LENGTH - 4; break; case REPORT_ID_HIDPP_LONG: max_count = HIDPP_REPORT_LONG_LENGTH - 4; break; case REPORT_ID_HIDPP_VERY_LONG: max_count = hidpp_dev->very_long_report_length - 4; break; default: return -EINVAL; } if (param_count > max_count) return -EINVAL; message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); if (!message) return -ENOMEM; message->report_id = report_id; message->rap.sub_id = sub_id; message->rap.reg_address = reg_address; memcpy(&message->rap.params, params, param_count); ret = hidpp_send_message_sync(hidpp_dev, message, response); kfree(message); return ret; } static inline bool hidpp_match_answer(struct hidpp_report *question, struct hidpp_report *answer) { return (answer->fap.feature_index == question->fap.feature_index) && (answer->fap.funcindex_clientid == question->fap.funcindex_clientid); } static inline bool hidpp_match_error(struct hidpp_report *question, struct hidpp_report *answer) { return ((answer->rap.sub_id == HIDPP_ERROR) || (answer->fap.feature_index == HIDPP20_ERROR)) && (answer->fap.funcindex_clientid == question->fap.feature_index) && (answer->fap.params[0] == question->fap.funcindex_clientid); } static inline bool hidpp_report_is_connect_event(struct hidpp_device *hidpp, struct hidpp_report *report) { return (hidpp->wireless_feature_index && (report->fap.feature_index == hidpp->wireless_feature_index)) || ((report->report_id == REPORT_ID_HIDPP_SHORT) && (report->rap.sub_id == 0x41)); } /* * hidpp_prefix_name() prefixes the current given name with "Logitech ". */ static void hidpp_prefix_name(char **name, int name_length) { #define PREFIX_LENGTH 9 /* "Logitech " */ int new_length; char *new_name; if (name_length > PREFIX_LENGTH && strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0) /* The prefix has is already in the name */ return; new_length = PREFIX_LENGTH + name_length; new_name = kzalloc(new_length, GFP_KERNEL); if (!new_name) return; snprintf(new_name, new_length, "Logitech %s", *name); kfree(*name); *name = new_name; } /* * Updates the USB wireless_status based on whether the headset * is turned on and reachable. */ static void hidpp_update_usb_wireless_status(struct hidpp_device *hidpp) { struct hid_device *hdev = hidpp->hid_dev; struct usb_interface *intf; if (!(hidpp->quirks & HIDPP_QUIRK_WIRELESS_STATUS)) return; if (!hid_is_usb(hdev)) return; intf = to_usb_interface(hdev->dev.parent); usb_set_wireless_status(intf, hidpp->battery.online ? USB_WIRELESS_STATUS_CONNECTED : USB_WIRELESS_STATUS_DISCONNECTED); } /** * hidpp_scroll_counter_handle_scroll() - Send high- and low-resolution scroll * events given a high-resolution wheel * movement. * @input_dev: Pointer to the input device * @counter: a hid_scroll_counter struct describing the wheel. * @hi_res_value: the movement of the wheel, in the mouse's high-resolution * units. * * Given a high-resolution movement, this function converts the movement into * fractions of 120 and emits high-resolution scroll events for the input * device. It also uses the multiplier from &struct hid_scroll_counter to * emit low-resolution scroll events when appropriate for * backwards-compatibility with userspace input libraries. */ static void hidpp_scroll_counter_handle_scroll(struct input_dev *input_dev, struct hidpp_scroll_counter *counter, int hi_res_value) { int low_res_value, remainder, direction; unsigned long long now, previous; hi_res_value = hi_res_value * 120/counter->wheel_multiplier; input_report_rel(input_dev, REL_WHEEL_HI_RES, hi_res_value); remainder = counter->remainder; direction = hi_res_value > 0 ? 1 : -1; now = sched_clock(); previous = counter->last_time; counter->last_time = now; /* * Reset the remainder after a period of inactivity or when the * direction changes. This prevents the REL_WHEEL emulation point * from sliding for devices that don't always provide the same * number of movements per detent. */ if (now - previous > 1000000000 || direction != counter->direction) remainder = 0; counter->direction = direction; remainder += hi_res_value; /* Some wheels will rest 7/8ths of a detent from the previous detent * after slow movement, so we want the threshold for low-res events to * be in the middle between two detents (e.g. after 4/8ths) as * opposed to on the detents themselves (8/8ths). */ if (abs(remainder) >= 60) { /* Add (or subtract) 1 because we want to trigger when the wheel * is half-way to the next detent (i.e. scroll 1 detent after a * 1/2 detent movement, 2 detents after a 1 1/2 detent movement, * etc.). */ low_res_value = remainder / 120; if (low_res_value == 0) low_res_value = (hi_res_value > 0 ? 1 : -1); input_report_rel(input_dev, REL_WHEEL, low_res_value); remainder -= low_res_value * 120; } counter->remainder = remainder; } /* -------------------------------------------------------------------------- */ /* HIDP++ 1.0 commands */ /* -------------------------------------------------------------------------- */ #define HIDPP_SET_REGISTER 0x80 #define HIDPP_GET_REGISTER 0x81 #define HIDPP_SET_LONG_REGISTER 0x82 #define HIDPP_GET_LONG_REGISTER 0x83 /** * hidpp10_set_register - Modify a HID++ 1.0 register. * @hidpp_dev: the device to set the register on. * @register_address: the address of the register to modify. * @byte: the byte of the register to modify. Should be less than 3. * @mask: mask of the bits to modify * @value: new values for the bits in mask * Return: 0 if successful, otherwise a negative error code. */ static int hidpp10_set_register(struct hidpp_device *hidpp_dev, u8 register_address, u8 byte, u8 mask, u8 value) { struct hidpp_report response; int ret; u8 params[3] = { 0 }; ret = hidpp_send_rap_command_sync(hidpp_dev, REPORT_ID_HIDPP_SHORT, HIDPP_GET_REGISTER, register_address, NULL, 0, &response); if (ret) return ret; memcpy(params, response.rap.params, 3); params[byte] &= ~mask; params[byte] |= value & mask; return hidpp_send_rap_command_sync(hidpp_dev, REPORT_ID_HIDPP_SHORT, HIDPP_SET_REGISTER, register_address, params, 3, &response); } #define HIDPP_REG_ENABLE_REPORTS 0x00 #define HIDPP_ENABLE_CONSUMER_REPORT BIT(0) #define HIDPP_ENABLE_WHEEL_REPORT BIT(2) #define HIDPP_ENABLE_MOUSE_EXTRA_BTN_REPORT BIT(3) #define HIDPP_ENABLE_BAT_REPORT BIT(4) #define HIDPP_ENABLE_HWHEEL_REPORT BIT(5) static int hidpp10_enable_battery_reporting(struct hidpp_device *hidpp_dev) { return hidpp10_set_register(hidpp_dev, HIDPP_REG_ENABLE_REPORTS, 0, HIDPP_ENABLE_BAT_REPORT, HIDPP_ENABLE_BAT_REPORT); } #define HIDPP_REG_FEATURES 0x01 #define HIDPP_ENABLE_SPECIAL_BUTTON_FUNC BIT(1) #define HIDPP_ENABLE_FAST_SCROLL BIT(6) /* On HID++ 1.0 devices, high-res scroll was called "scrolling acceleration". */ static int hidpp10_enable_scrolling_acceleration(struct hidpp_device *hidpp_dev) { return hidpp10_set_register(hidpp_dev, HIDPP_REG_FEATURES, 0, HIDPP_ENABLE_FAST_SCROLL, HIDPP_ENABLE_FAST_SCROLL); } #define HIDPP_REG_BATTERY_STATUS 0x07 static int hidpp10_battery_status_map_level(u8 param) { int level; switch (param) { case 1 ... 2: level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; break; case 3 ... 4: level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; break; case 5 ... 6: level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; break; case 7: level = POWER_SUPPLY_CAPACITY_LEVEL_HIGH; break; default: level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; } return level; } static int hidpp10_battery_status_map_status(u8 param) { int status; switch (param) { case 0x00: /* discharging (in use) */ status = POWER_SUPPLY_STATUS_DISCHARGING; break; case 0x21: /* (standard) charging */ case 0x24: /* fast charging */ case 0x25: /* slow charging */ status = POWER_SUPPLY_STATUS_CHARGING; break; case 0x26: /* topping charge */ case 0x22: /* charge complete */ status = POWER_SUPPLY_STATUS_FULL; break; case 0x20: /* unknown */ status = POWER_SUPPLY_STATUS_UNKNOWN; break; /* * 0x01...0x1F = reserved (not charging) * 0x23 = charging error * 0x27..0xff = reserved */ default: status = POWER_SUPPLY_STATUS_NOT_CHARGING; break; } return status; } static int hidpp10_query_battery_status(struct hidpp_device *hidpp) { struct hidpp_report response; int ret, status; ret = hidpp_send_rap_command_sync(hidpp, REPORT_ID_HIDPP_SHORT, HIDPP_GET_REGISTER, HIDPP_REG_BATTERY_STATUS, NULL, 0, &response); if (ret) return ret; hidpp->battery.level = hidpp10_battery_status_map_level(response.rap.params[0]); status = hidpp10_battery_status_map_status(response.rap.params[1]); hidpp->battery.status = status; /* the capacity is only available when discharging or full */ hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || status == POWER_SUPPLY_STATUS_FULL; return 0; } #define HIDPP_REG_BATTERY_MILEAGE 0x0D static int hidpp10_battery_mileage_map_status(u8 param) { int status; switch (param >> 6) { case 0x00: /* discharging (in use) */ status = POWER_SUPPLY_STATUS_DISCHARGING; break; case 0x01: /* charging */ status = POWER_SUPPLY_STATUS_CHARGING; break; case 0x02: /* charge complete */ status = POWER_SUPPLY_STATUS_FULL; break; /* * 0x03 = charging error */ default: status = POWER_SUPPLY_STATUS_NOT_CHARGING; break; } return status; } static int hidpp10_query_battery_mileage(struct hidpp_device *hidpp) { struct hidpp_report response; int ret, status; ret = hidpp_send_rap_command_sync(hidpp, REPORT_ID_HIDPP_SHORT, HIDPP_GET_REGISTER, HIDPP_REG_BATTERY_MILEAGE, NULL, 0, &response); if (ret) return ret; hidpp->battery.capacity = response.rap.params[0]; status = hidpp10_battery_mileage_map_status(response.rap.params[2]); hidpp->battery.status = status; /* the capacity is only available when discharging or full */ hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || status == POWER_SUPPLY_STATUS_FULL; return 0; } static int hidpp10_battery_event(struct hidpp_device *hidpp, u8 *data, int size) { struct hidpp_report *report = (struct hidpp_report *)data; int status, capacity, level; bool changed; if (report->report_id != REPORT_ID_HIDPP_SHORT) return 0; switch (report->rap.sub_id) { case HIDPP_REG_BATTERY_STATUS: capacity = hidpp->battery.capacity; level = hidpp10_battery_status_map_level(report->rawbytes[1]); status = hidpp10_battery_status_map_status(report->rawbytes[2]); break; case HIDPP_REG_BATTERY_MILEAGE: capacity = report->rap.params[0]; level = hidpp->battery.level; status = hidpp10_battery_mileage_map_status(report->rawbytes[3]); break; default: return 0; } changed = capacity != hidpp->battery.capacity || level != hidpp->battery.level || status != hidpp->battery.status; /* the capacity is only available when discharging or full */ hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || status == POWER_SUPPLY_STATUS_FULL; if (changed) { hidpp->battery.level = level; hidpp->battery.status = status; if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); } return 0; } #define HIDPP_REG_PAIRING_INFORMATION 0xB5 #define HIDPP_EXTENDED_PAIRING 0x30 #define HIDPP_DEVICE_NAME 0x40 static char *hidpp_unifying_get_name(struct hidpp_device *hidpp_dev) { struct hidpp_report response; int ret; u8 params[1] = { HIDPP_DEVICE_NAME }; char *name; int len; ret = hidpp_send_rap_command_sync(hidpp_dev, REPORT_ID_HIDPP_SHORT, HIDPP_GET_LONG_REGISTER, HIDPP_REG_PAIRING_INFORMATION, params, 1, &response); if (ret) return NULL; len = response.rap.params[1]; if (2 + len > sizeof(response.rap.params)) return NULL; if (len < 4) /* logitech devices are usually at least Xddd */ return NULL; name = kzalloc(len + 1, GFP_KERNEL); if (!name) return NULL; memcpy(name, &response.rap.params[2], len); /* include the terminating '\0' */ hidpp_prefix_name(&name, len + 1); return name; } static int hidpp_unifying_get_serial(struct hidpp_device *hidpp, u32 *serial) { struct hidpp_report response; int ret; u8 params[1] = { HIDPP_EXTENDED_PAIRING }; ret = hidpp_send_rap_command_sync(hidpp, REPORT_ID_HIDPP_SHORT, HIDPP_GET_LONG_REGISTER, HIDPP_REG_PAIRING_INFORMATION, params, 1, &response); if (ret) return ret; /* * We don't care about LE or BE, we will output it as a string * with %4phD, so we need to keep the order. */ *serial = *((u32 *)&response.rap.params[1]); return 0; } static int hidpp_unifying_init(struct hidpp_device *hidpp) { struct hid_device *hdev = hidpp->hid_dev; const char *name; u32 serial; int ret; ret = hidpp_unifying_get_serial(hidpp, &serial); if (ret) return ret; snprintf(hdev->uniq, sizeof(hdev->uniq), "%4phD", &serial); dbg_hid("HID++ Unifying: Got serial: %s\n", hdev->uniq); name = hidpp_unifying_get_name(hidpp); if (!name) return -EIO; snprintf(hdev->name, sizeof(hdev->name), "%s", name); dbg_hid("HID++ Unifying: Got name: %s\n", name); kfree(name); return 0; } /* -------------------------------------------------------------------------- */ /* 0x0000: Root */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_ROOT 0x0000 #define HIDPP_PAGE_ROOT_IDX 0x00 #define CMD_ROOT_GET_FEATURE 0x00 #define CMD_ROOT_GET_PROTOCOL_VERSION 0x10 static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature, u8 *feature_index) { struct hidpp_report response; int ret; u8 params[2] = { feature >> 8, feature & 0x00FF }; ret = hidpp_send_fap_command_sync(hidpp, HIDPP_PAGE_ROOT_IDX, CMD_ROOT_GET_FEATURE, params, 2, &response); if (ret) return ret; if (response.fap.params[0] == 0) return -ENOENT; *feature_index = response.fap.params[0]; return ret; } static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp) { const u8 ping_byte = 0x5a; u8 ping_data[3] = { 0, 0, ping_byte }; struct hidpp_report response; int ret; ret = hidpp_send_rap_command_sync(hidpp, REPORT_ID_HIDPP_SHORT, HIDPP_PAGE_ROOT_IDX, CMD_ROOT_GET_PROTOCOL_VERSION | LINUX_KERNEL_SW_ID, ping_data, sizeof(ping_data), &response); if (ret == HIDPP_ERROR_INVALID_SUBID) { hidpp->protocol_major = 1; hidpp->protocol_minor = 0; goto print_version; } /* the device might not be connected */ if (ret == HIDPP_ERROR_RESOURCE_ERROR) return -EIO; if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; if (response.rap.params[2] != ping_byte) { hid_err(hidpp->hid_dev, "%s: ping mismatch 0x%02x != 0x%02x\n", __func__, response.rap.params[2], ping_byte); return -EPROTO; } hidpp->protocol_major = response.rap.params[0]; hidpp->protocol_minor = response.rap.params[1]; print_version: if (!hidpp->connected_once) { hid_info(hidpp->hid_dev, "HID++ %u.%u device connected.\n", hidpp->protocol_major, hidpp->protocol_minor); hidpp->connected_once = true; } else hid_dbg(hidpp->hid_dev, "HID++ %u.%u device connected.\n", hidpp->protocol_major, hidpp->protocol_minor); return 0; } /* -------------------------------------------------------------------------- */ /* 0x0003: Device Information */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_DEVICE_INFORMATION 0x0003 #define CMD_GET_DEVICE_INFO 0x00 static int hidpp_get_serial(struct hidpp_device *hidpp, u32 *serial) { struct hidpp_report response; u8 feature_index; int ret; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_DEVICE_INFORMATION, &feature_index); if (ret) return ret; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_GET_DEVICE_INFO, NULL, 0, &response); if (ret) return ret; /* See hidpp_unifying_get_serial() */ *serial = *((u32 *)&response.rap.params[1]); return 0; } static int hidpp_serial_init(struct hidpp_device *hidpp) { struct hid_device *hdev = hidpp->hid_dev; u32 serial; int ret; ret = hidpp_get_serial(hidpp, &serial); if (ret) return ret; snprintf(hdev->uniq, sizeof(hdev->uniq), "%4phD", &serial); dbg_hid("HID++ DeviceInformation: Got serial: %s\n", hdev->uniq); return 0; } /* -------------------------------------------------------------------------- */ /* 0x0005: GetDeviceNameType */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_GET_DEVICE_NAME_TYPE 0x0005 #define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT 0x00 #define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME 0x10 #define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE 0x20 static int hidpp_devicenametype_get_count(struct hidpp_device *hidpp, u8 feature_index, u8 *nameLength) { struct hidpp_report response; int ret; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_GET_DEVICE_NAME_TYPE_GET_COUNT, NULL, 0, &response); if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; *nameLength = response.fap.params[0]; return ret; } static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp, u8 feature_index, u8 char_index, char *device_name, int len_buf) { struct hidpp_report response; int ret, i; int count; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1, &response); if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; switch (response.report_id) { case REPORT_ID_HIDPP_VERY_LONG: count = hidpp->very_long_report_length - 4; break; case REPORT_ID_HIDPP_LONG: count = HIDPP_REPORT_LONG_LENGTH - 4; break; case REPORT_ID_HIDPP_SHORT: count = HIDPP_REPORT_SHORT_LENGTH - 4; break; default: return -EPROTO; } if (len_buf < count) count = len_buf; for (i = 0; i < count; i++) device_name[i] = response.fap.params[i]; return count; } static char *hidpp_get_device_name(struct hidpp_device *hidpp) { u8 feature_index; u8 __name_length; char *name; unsigned index = 0; int ret; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_GET_DEVICE_NAME_TYPE, &feature_index); if (ret) return NULL; ret = hidpp_devicenametype_get_count(hidpp, feature_index, &__name_length); if (ret) return NULL; name = kzalloc(__name_length + 1, GFP_KERNEL); if (!name) return NULL; while (index < __name_length) { ret = hidpp_devicenametype_get_device_name(hidpp, feature_index, index, name + index, __name_length - index); if (ret <= 0) { kfree(name); return NULL; } index += ret; } /* include the terminating '\0' */ hidpp_prefix_name(&name, __name_length + 1); return name; } /* -------------------------------------------------------------------------- */ /* 0x1000: Battery level status */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_BATTERY_LEVEL_STATUS 0x1000 #define CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS 0x00 #define CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_CAPABILITY 0x10 #define EVENT_BATTERY_LEVEL_STATUS_BROADCAST 0x00 #define FLAG_BATTERY_LEVEL_DISABLE_OSD BIT(0) #define FLAG_BATTERY_LEVEL_MILEAGE BIT(1) #define FLAG_BATTERY_LEVEL_RECHARGEABLE BIT(2) static int hidpp_map_battery_level(int capacity) { if (capacity < 11) return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; /* * The spec says this should be < 31 but some devices report 30 * with brand new batteries and Windows reports 30 as "Good". */ else if (capacity < 30) return POWER_SUPPLY_CAPACITY_LEVEL_LOW; else if (capacity < 81) return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; return POWER_SUPPLY_CAPACITY_LEVEL_FULL; } static int hidpp20_batterylevel_map_status_capacity(u8 data[3], int *capacity, int *next_capacity, int *level) { int status; *capacity = data[0]; *next_capacity = data[1]; *level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; /* When discharging, we can rely on the device reported capacity. * For all other states the device reports 0 (unknown). */ switch (data[2]) { case 0: /* discharging (in use) */ status = POWER_SUPPLY_STATUS_DISCHARGING; *level = hidpp_map_battery_level(*capacity); break; case 1: /* recharging */ status = POWER_SUPPLY_STATUS_CHARGING; break; case 2: /* charge in final stage */ status = POWER_SUPPLY_STATUS_CHARGING; break; case 3: /* charge complete */ status = POWER_SUPPLY_STATUS_FULL; *level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; *capacity = 100; break; case 4: /* recharging below optimal speed */ status = POWER_SUPPLY_STATUS_CHARGING; break; /* 5 = invalid battery type 6 = thermal error 7 = other charging error */ default: status = POWER_SUPPLY_STATUS_NOT_CHARGING; break; } return status; } static int hidpp20_batterylevel_get_battery_capacity(struct hidpp_device *hidpp, u8 feature_index, int *status, int *capacity, int *next_capacity, int *level) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS, NULL, 0, &response); /* Ignore these intermittent errors */ if (ret == HIDPP_ERROR_RESOURCE_ERROR) return -EIO; if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; *status = hidpp20_batterylevel_map_status_capacity(params, capacity, next_capacity, level); return 0; } static int hidpp20_batterylevel_get_battery_info(struct hidpp_device *hidpp, u8 feature_index) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; unsigned int level_count, flags; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_CAPABILITY, NULL, 0, &response); if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; level_count = params[0]; flags = params[1]; if (level_count < 10 || !(flags & FLAG_BATTERY_LEVEL_MILEAGE)) hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS; else hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_MILEAGE; return 0; } static int hidpp20_query_battery_info_1000(struct hidpp_device *hidpp) { int ret; int status, capacity, next_capacity, level; if (hidpp->battery.feature_index == 0xff) { ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_BATTERY_LEVEL_STATUS, &hidpp->battery.feature_index); if (ret) return ret; } ret = hidpp20_batterylevel_get_battery_capacity(hidpp, hidpp->battery.feature_index, &status, &capacity, &next_capacity, &level); if (ret) return ret; ret = hidpp20_batterylevel_get_battery_info(hidpp, hidpp->battery.feature_index); if (ret) return ret; hidpp->battery.status = status; hidpp->battery.capacity = capacity; hidpp->battery.level = level; /* the capacity is only available when discharging or full */ hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || status == POWER_SUPPLY_STATUS_FULL; return 0; } static int hidpp20_battery_event_1000(struct hidpp_device *hidpp, u8 *data, int size) { struct hidpp_report *report = (struct hidpp_report *)data; int status, capacity, next_capacity, level; bool changed; if (report->fap.feature_index != hidpp->battery.feature_index || report->fap.funcindex_clientid != EVENT_BATTERY_LEVEL_STATUS_BROADCAST) return 0; status = hidpp20_batterylevel_map_status_capacity(report->fap.params, &capacity, &next_capacity, &level); /* the capacity is only available when discharging or full */ hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || status == POWER_SUPPLY_STATUS_FULL; changed = capacity != hidpp->battery.capacity || level != hidpp->battery.level || status != hidpp->battery.status; if (changed) { hidpp->battery.level = level; hidpp->battery.capacity = capacity; hidpp->battery.status = status; if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); } return 0; } /* -------------------------------------------------------------------------- */ /* 0x1001: Battery voltage */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_BATTERY_VOLTAGE 0x1001 #define CMD_BATTERY_VOLTAGE_GET_BATTERY_VOLTAGE 0x00 #define EVENT_BATTERY_VOLTAGE_STATUS_BROADCAST 0x00 static int hidpp20_battery_map_status_voltage(u8 data[3], int *voltage, int *level, int *charge_type) { int status; long flags = (long) data[2]; *level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; if (flags & 0x80) switch (flags & 0x07) { case 0: status = POWER_SUPPLY_STATUS_CHARGING; break; case 1: status = POWER_SUPPLY_STATUS_FULL; *level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; break; case 2: status = POWER_SUPPLY_STATUS_NOT_CHARGING; break; default: status = POWER_SUPPLY_STATUS_UNKNOWN; break; } else status = POWER_SUPPLY_STATUS_DISCHARGING; *charge_type = POWER_SUPPLY_CHARGE_TYPE_STANDARD; if (test_bit(3, &flags)) { *charge_type = POWER_SUPPLY_CHARGE_TYPE_FAST; } if (test_bit(4, &flags)) { *charge_type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; } if (test_bit(5, &flags)) { *level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; } *voltage = get_unaligned_be16(data); return status; } static int hidpp20_battery_get_battery_voltage(struct hidpp_device *hidpp, u8 feature_index, int *status, int *voltage, int *level, int *charge_type) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_BATTERY_VOLTAGE_GET_BATTERY_VOLTAGE, NULL, 0, &response); if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_VOLTAGE; *status = hidpp20_battery_map_status_voltage(params, voltage, level, charge_type); return 0; } static int hidpp20_map_battery_capacity(struct hid_device *hid_dev, int voltage) { /* NB: This voltage curve doesn't necessarily map perfectly to all * devices that implement the BATTERY_VOLTAGE feature. This is because * there are a few devices that use different battery technology. */ static const int voltages[100] = { 4186, 4156, 4143, 4133, 4122, 4113, 4103, 4094, 4086, 4075, 4067, 4059, 4051, 4043, 4035, 4027, 4019, 4011, 4003, 3997, 3989, 3983, 3976, 3969, 3961, 3955, 3949, 3942, 3935, 3929, 3922, 3916, 3909, 3902, 3896, 3890, 3883, 3877, 3870, 3865, 3859, 3853, 3848, 3842, 3837, 3833, 3828, 3824, 3819, 3815, 3811, 3808, 3804, 3800, 3797, 3793, 3790, 3787, 3784, 3781, 3778, 3775, 3772, 3770, 3767, 3764, 3762, 3759, 3757, 3754, 3751, 3748, 3744, 3741, 3737, 3734, 3730, 3726, 3724, 3720, 3717, 3714, 3710, 3706, 3702, 3697, 3693, 3688, 3683, 3677, 3671, 3666, 3662, 3658, 3654, 3646, 3633, 3612, 3579, 3537 }; int i; if (unlikely(voltage < 3500 || voltage >= 5000)) hid_warn_once(hid_dev, "%s: possibly using the wrong voltage curve\n", __func__); for (i = 0; i < ARRAY_SIZE(voltages); i++) { if (voltage >= voltages[i]) return ARRAY_SIZE(voltages) - i; } return 0; } static int hidpp20_query_battery_voltage_info(struct hidpp_device *hidpp) { int ret; int status, voltage, level, charge_type; if (hidpp->battery.voltage_feature_index == 0xff) { ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_BATTERY_VOLTAGE, &hidpp->battery.voltage_feature_index); if (ret) return ret; } ret = hidpp20_battery_get_battery_voltage(hidpp, hidpp->battery.voltage_feature_index, &status, &voltage, &level, &charge_type); if (ret) return ret; hidpp->battery.status = status; hidpp->battery.voltage = voltage; hidpp->battery.capacity = hidpp20_map_battery_capacity(hidpp->hid_dev, voltage); hidpp->battery.level = level; hidpp->battery.charge_type = charge_type; hidpp->battery.online = status != POWER_SUPPLY_STATUS_NOT_CHARGING; return 0; } static int hidpp20_battery_voltage_event(struct hidpp_device *hidpp, u8 *data, int size) { struct hidpp_report *report = (struct hidpp_report *)data; int status, voltage, level, charge_type; if (report->fap.feature_index != hidpp->battery.voltage_feature_index || report->fap.funcindex_clientid != EVENT_BATTERY_VOLTAGE_STATUS_BROADCAST) return 0; status = hidpp20_battery_map_status_voltage(report->fap.params, &voltage, &level, &charge_type); hidpp->battery.online = status != POWER_SUPPLY_STATUS_NOT_CHARGING; if (voltage != hidpp->battery.voltage || status != hidpp->battery.status) { hidpp->battery.voltage = voltage; hidpp->battery.capacity = hidpp20_map_battery_capacity(hidpp->hid_dev, voltage); hidpp->battery.status = status; hidpp->battery.level = level; hidpp->battery.charge_type = charge_type; if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); } return 0; } /* -------------------------------------------------------------------------- */ /* 0x1004: Unified battery */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_UNIFIED_BATTERY 0x1004 #define CMD_UNIFIED_BATTERY_GET_CAPABILITIES 0x00 #define CMD_UNIFIED_BATTERY_GET_STATUS 0x10 #define EVENT_UNIFIED_BATTERY_STATUS_EVENT 0x00 #define FLAG_UNIFIED_BATTERY_LEVEL_CRITICAL BIT(0) #define FLAG_UNIFIED_BATTERY_LEVEL_LOW BIT(1) #define FLAG_UNIFIED_BATTERY_LEVEL_GOOD BIT(2) #define FLAG_UNIFIED_BATTERY_LEVEL_FULL BIT(3) #define FLAG_UNIFIED_BATTERY_FLAGS_RECHARGEABLE BIT(0) #define FLAG_UNIFIED_BATTERY_FLAGS_STATE_OF_CHARGE BIT(1) static int hidpp20_unifiedbattery_get_capabilities(struct hidpp_device *hidpp, u8 feature_index) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS || hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_PERCENTAGE) { /* we have already set the device capabilities, so let's skip */ return 0; } ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_UNIFIED_BATTERY_GET_CAPABILITIES, NULL, 0, &response); /* Ignore these intermittent errors */ if (ret == HIDPP_ERROR_RESOURCE_ERROR) return -EIO; if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; /* * If the device supports state of charge (battery percentage) we won't * export the battery level information. there are 4 possible battery * levels and they all are optional, this means that the device might * not support any of them, we are just better off with the battery * percentage. */ if (params[1] & FLAG_UNIFIED_BATTERY_FLAGS_STATE_OF_CHARGE) { hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_PERCENTAGE; hidpp->battery.supported_levels_1004 = 0; } else { hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS; hidpp->battery.supported_levels_1004 = params[0]; } return 0; } static int hidpp20_unifiedbattery_map_status(struct hidpp_device *hidpp, u8 charging_status, u8 external_power_status) { int status; switch (charging_status) { case 0: /* discharging */ status = POWER_SUPPLY_STATUS_DISCHARGING; break; case 1: /* charging */ case 2: /* charging slow */ status = POWER_SUPPLY_STATUS_CHARGING; break; case 3: /* complete */ status = POWER_SUPPLY_STATUS_FULL; break; case 4: /* error */ status = POWER_SUPPLY_STATUS_NOT_CHARGING; hid_info(hidpp->hid_dev, "%s: charging error", hidpp->name); break; default: status = POWER_SUPPLY_STATUS_NOT_CHARGING; break; } return status; } static int hidpp20_unifiedbattery_map_level(struct hidpp_device *hidpp, u8 battery_level) { /* cler unsupported level bits */ battery_level &= hidpp->battery.supported_levels_1004; if (battery_level & FLAG_UNIFIED_BATTERY_LEVEL_FULL) return POWER_SUPPLY_CAPACITY_LEVEL_FULL; else if (battery_level & FLAG_UNIFIED_BATTERY_LEVEL_GOOD) return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; else if (battery_level & FLAG_UNIFIED_BATTERY_LEVEL_LOW) return POWER_SUPPLY_CAPACITY_LEVEL_LOW; else if (battery_level & FLAG_UNIFIED_BATTERY_LEVEL_CRITICAL) return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; return POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; } static int hidpp20_unifiedbattery_get_status(struct hidpp_device *hidpp, u8 feature_index, u8 *state_of_charge, int *status, int *level) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_UNIFIED_BATTERY_GET_STATUS, NULL, 0, &response); /* Ignore these intermittent errors */ if (ret == HIDPP_ERROR_RESOURCE_ERROR) return -EIO; if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; *state_of_charge = params[0]; *status = hidpp20_unifiedbattery_map_status(hidpp, params[2], params[3]); *level = hidpp20_unifiedbattery_map_level(hidpp, params[1]); return 0; } static int hidpp20_query_battery_info_1004(struct hidpp_device *hidpp) { int ret; u8 state_of_charge; int status, level; if (hidpp->battery.feature_index == 0xff) { ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_UNIFIED_BATTERY, &hidpp->battery.feature_index); if (ret) return ret; } ret = hidpp20_unifiedbattery_get_capabilities(hidpp, hidpp->battery.feature_index); if (ret) return ret; ret = hidpp20_unifiedbattery_get_status(hidpp, hidpp->battery.feature_index, &state_of_charge, &status, &level); if (ret) return ret; hidpp->capabilities |= HIDPP_CAPABILITY_UNIFIED_BATTERY; hidpp->battery.capacity = state_of_charge; hidpp->battery.status = status; hidpp->battery.level = level; hidpp->battery.online = true; return 0; } static int hidpp20_battery_event_1004(struct hidpp_device *hidpp, u8 *data, int size) { struct hidpp_report *report = (struct hidpp_report *)data; u8 *params = (u8 *)report->fap.params; int state_of_charge, status, level; bool changed; if (report->fap.feature_index != hidpp->battery.feature_index || report->fap.funcindex_clientid != EVENT_UNIFIED_BATTERY_STATUS_EVENT) return 0; state_of_charge = params[0]; status = hidpp20_unifiedbattery_map_status(hidpp, params[2], params[3]); level = hidpp20_unifiedbattery_map_level(hidpp, params[1]); changed = status != hidpp->battery.status || (state_of_charge != hidpp->battery.capacity && hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_PERCENTAGE) || (level != hidpp->battery.level && hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS); if (changed) { hidpp->battery.capacity = state_of_charge; hidpp->battery.status = status; hidpp->battery.level = level; if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); } return 0; } /* -------------------------------------------------------------------------- */ /* Battery feature helpers */ /* -------------------------------------------------------------------------- */ static enum power_supply_property hidpp_battery_props[] = { POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_SCOPE, POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_MANUFACTURER, POWER_SUPPLY_PROP_SERIAL_NUMBER, 0, /* placeholder for POWER_SUPPLY_PROP_CAPACITY, */ 0, /* placeholder for POWER_SUPPLY_PROP_CAPACITY_LEVEL, */ 0, /* placeholder for POWER_SUPPLY_PROP_VOLTAGE_NOW, */ }; static int hidpp_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct hidpp_device *hidpp = power_supply_get_drvdata(psy); int ret = 0; switch(psp) { case POWER_SUPPLY_PROP_STATUS: val->intval = hidpp->battery.status; break; case POWER_SUPPLY_PROP_CAPACITY: val->intval = hidpp->battery.capacity; break; case POWER_SUPPLY_PROP_CAPACITY_LEVEL: val->intval = hidpp->battery.level; break; case POWER_SUPPLY_PROP_SCOPE: val->intval = POWER_SUPPLY_SCOPE_DEVICE; break; case POWER_SUPPLY_PROP_ONLINE: val->intval = hidpp->battery.online; break; case POWER_SUPPLY_PROP_MODEL_NAME: if (!strncmp(hidpp->name, "Logitech ", 9)) val->strval = hidpp->name + 9; else val->strval = hidpp->name; break; case POWER_SUPPLY_PROP_MANUFACTURER: val->strval = "Logitech"; break; case POWER_SUPPLY_PROP_SERIAL_NUMBER: val->strval = hidpp->hid_dev->uniq; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: /* hardware reports voltage in mV. sysfs expects uV */ val->intval = hidpp->battery.voltage * 1000; break; case POWER_SUPPLY_PROP_CHARGE_TYPE: val->intval = hidpp->battery.charge_type; break; default: ret = -EINVAL; break; } return ret; } /* -------------------------------------------------------------------------- */ /* 0x1d4b: Wireless device status */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_WIRELESS_DEVICE_STATUS 0x1d4b static int hidpp_get_wireless_feature_index(struct hidpp_device *hidpp, u8 *feature_index) { return hidpp_root_get_feature(hidpp, HIDPP_PAGE_WIRELESS_DEVICE_STATUS, feature_index); } /* -------------------------------------------------------------------------- */ /* 0x1f20: ADC measurement */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_ADC_MEASUREMENT 0x1f20 #define CMD_ADC_MEASUREMENT_GET_ADC_MEASUREMENT 0x00 #define EVENT_ADC_MEASUREMENT_STATUS_BROADCAST 0x00 static int hidpp20_map_adc_measurement_1f20_capacity(struct hid_device *hid_dev, int voltage) { /* NB: This voltage curve doesn't necessarily map perfectly to all * devices that implement the ADC_MEASUREMENT feature. This is because * there are a few devices that use different battery technology. * * Adapted from: * https://github.com/Sapd/HeadsetControl/blob/acd972be0468e039b93aae81221f20a54d2d60f7/src/devices/logitech_g633_g933_935.c#L44-L52 */ static const int voltages[100] = { 4030, 4024, 4018, 4011, 4003, 3994, 3985, 3975, 3963, 3951, 3937, 3922, 3907, 3893, 3880, 3868, 3857, 3846, 3837, 3828, 3820, 3812, 3805, 3798, 3791, 3785, 3779, 3773, 3768, 3762, 3757, 3752, 3747, 3742, 3738, 3733, 3729, 3724, 3720, 3716, 3712, 3708, 3704, 3700, 3696, 3692, 3688, 3685, 3681, 3677, 3674, 3670, 3667, 3663, 3660, 3657, 3653, 3650, 3646, 3643, 3640, 3637, 3633, 3630, 3627, 3624, 3620, 3617, 3614, 3611, 3608, 3604, 3601, 3598, 3595, 3592, 3589, 3585, 3582, 3579, 3576, 3573, 3569, 3566, 3563, 3560, 3556, 3553, 3550, 3546, 3543, 3539, 3536, 3532, 3529, 3525, 3499, 3466, 3433, 3399, }; int i; if (voltage == 0) return 0; if (unlikely(voltage < 3400 || voltage >= 5000)) hid_warn_once(hid_dev, "%s: possibly using the wrong voltage curve\n", __func__); for (i = 0; i < ARRAY_SIZE(voltages); i++) { if (voltage >= voltages[i]) return ARRAY_SIZE(voltages) - i; } return 0; } static int hidpp20_map_adc_measurement_1f20(u8 data[3], int *voltage) { int status; u8 flags; flags = data[2]; switch (flags) { case 0x01: status = POWER_SUPPLY_STATUS_DISCHARGING; break; case 0x03: status = POWER_SUPPLY_STATUS_CHARGING; break; case 0x07: status = POWER_SUPPLY_STATUS_FULL; break; case 0x0F: default: status = POWER_SUPPLY_STATUS_UNKNOWN; break; } *voltage = get_unaligned_be16(data); dbg_hid("Parsed 1f20 data as flag 0x%02x voltage %dmV\n", flags, *voltage); return status; } /* Return value is whether the device is online */ static bool hidpp20_get_adc_measurement_1f20(struct hidpp_device *hidpp, u8 feature_index, int *status, int *voltage) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; *status = POWER_SUPPLY_STATUS_UNKNOWN; *voltage = 0; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_ADC_MEASUREMENT_GET_ADC_MEASUREMENT, NULL, 0, &response); if (ret > 0) { hid_dbg(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return false; } *status = hidpp20_map_adc_measurement_1f20(params, voltage); return true; } static int hidpp20_query_adc_measurement_info_1f20(struct hidpp_device *hidpp) { if (hidpp->battery.adc_measurement_feature_index == 0xff) { int ret; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_ADC_MEASUREMENT, &hidpp->battery.adc_measurement_feature_index); if (ret) return ret; hidpp->capabilities |= HIDPP_CAPABILITY_ADC_MEASUREMENT; } hidpp->battery.online = hidpp20_get_adc_measurement_1f20(hidpp, hidpp->battery.adc_measurement_feature_index, &hidpp->battery.status, &hidpp->battery.voltage); hidpp->battery.capacity = hidpp20_map_adc_measurement_1f20_capacity(hidpp->hid_dev, hidpp->battery.voltage); hidpp_update_usb_wireless_status(hidpp); return 0; } static int hidpp20_adc_measurement_event_1f20(struct hidpp_device *hidpp, u8 *data, int size) { struct hidpp_report *report = (struct hidpp_report *)data; int status, voltage; if (report->fap.feature_index != hidpp->battery.adc_measurement_feature_index || report->fap.funcindex_clientid != EVENT_ADC_MEASUREMENT_STATUS_BROADCAST) return 0; status = hidpp20_map_adc_measurement_1f20(report->fap.params, &voltage); hidpp->battery.online = status != POWER_SUPPLY_STATUS_UNKNOWN; if (voltage != hidpp->battery.voltage || status != hidpp->battery.status) { hidpp->battery.status = status; hidpp->battery.voltage = voltage; hidpp->battery.capacity = hidpp20_map_adc_measurement_1f20_capacity(hidpp->hid_dev, voltage); if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); hidpp_update_usb_wireless_status(hidpp); } return 0; } /* -------------------------------------------------------------------------- */ /* 0x2120: Hi-resolution scrolling */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_HI_RESOLUTION_SCROLLING 0x2120 #define CMD_HI_RESOLUTION_SCROLLING_SET_HIGHRES_SCROLLING_MODE 0x10 static int hidpp_hrs_set_highres_scrolling_mode(struct hidpp_device *hidpp, bool enabled, u8 *multiplier) { u8 feature_index; int ret; u8 params[1]; struct hidpp_report response; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_HI_RESOLUTION_SCROLLING, &feature_index); if (ret) return ret; params[0] = enabled ? BIT(0) : 0; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_HI_RESOLUTION_SCROLLING_SET_HIGHRES_SCROLLING_MODE, params, sizeof(params), &response); if (ret) return ret; *multiplier = response.fap.params[1]; return 0; } /* -------------------------------------------------------------------------- */ /* 0x2121: HiRes Wheel */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_HIRES_WHEEL 0x2121 #define CMD_HIRES_WHEEL_GET_WHEEL_CAPABILITY 0x00 #define CMD_HIRES_WHEEL_SET_WHEEL_MODE 0x20 static int hidpp_hrw_get_wheel_capability(struct hidpp_device *hidpp, u8 *multiplier) { u8 feature_index; int ret; struct hidpp_report response; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_HIRES_WHEEL, &feature_index); if (ret) goto return_default; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_HIRES_WHEEL_GET_WHEEL_CAPABILITY, NULL, 0, &response); if (ret) goto return_default; *multiplier = response.fap.params[0]; return 0; return_default: hid_warn(hidpp->hid_dev, "Couldn't get wheel multiplier (error %d)\n", ret); return ret; } static int hidpp_hrw_set_wheel_mode(struct hidpp_device *hidpp, bool invert, bool high_resolution, bool use_hidpp) { u8 feature_index; int ret; u8 params[1]; struct hidpp_report response; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_HIRES_WHEEL, &feature_index); if (ret) return ret; params[0] = (invert ? BIT(2) : 0) | (high_resolution ? BIT(1) : 0) | (use_hidpp ? BIT(0) : 0); return hidpp_send_fap_command_sync(hidpp, feature_index, CMD_HIRES_WHEEL_SET_WHEEL_MODE, params, sizeof(params), &response); } /* -------------------------------------------------------------------------- */ /* 0x4301: Solar Keyboard */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_SOLAR_KEYBOARD 0x4301 #define CMD_SOLAR_SET_LIGHT_MEASURE 0x00 #define EVENT_SOLAR_BATTERY_BROADCAST 0x00 #define EVENT_SOLAR_BATTERY_LIGHT_MEASURE 0x10 #define EVENT_SOLAR_CHECK_LIGHT_BUTTON 0x20 static int hidpp_solar_request_battery_event(struct hidpp_device *hidpp) { struct hidpp_report response; u8 params[2] = { 1, 1 }; int ret; if (hidpp->battery.feature_index == 0xff) { ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_SOLAR_KEYBOARD, &hidpp->battery.solar_feature_index); if (ret) return ret; } ret = hidpp_send_fap_command_sync(hidpp, hidpp->battery.solar_feature_index, CMD_SOLAR_SET_LIGHT_MEASURE, params, 2, &response); if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_MILEAGE; return 0; } static int hidpp_solar_battery_event(struct hidpp_device *hidpp, u8 *data, int size) { struct hidpp_report *report = (struct hidpp_report *)data; int capacity, lux, status; u8 function; function = report->fap.funcindex_clientid; if (report->fap.feature_index != hidpp->battery.solar_feature_index || !(function == EVENT_SOLAR_BATTERY_BROADCAST || function == EVENT_SOLAR_BATTERY_LIGHT_MEASURE || function == EVENT_SOLAR_CHECK_LIGHT_BUTTON)) return 0; capacity = report->fap.params[0]; switch (function) { case EVENT_SOLAR_BATTERY_LIGHT_MEASURE: lux = (report->fap.params[1] << 8) | report->fap.params[2]; if (lux > 200) status = POWER_SUPPLY_STATUS_CHARGING; else status = POWER_SUPPLY_STATUS_DISCHARGING; break; case EVENT_SOLAR_CHECK_LIGHT_BUTTON: default: if (capacity < hidpp->battery.capacity) status = POWER_SUPPLY_STATUS_DISCHARGING; else status = POWER_SUPPLY_STATUS_CHARGING; } if (capacity == 100) status = POWER_SUPPLY_STATUS_FULL; hidpp->battery.online = true; if (capacity != hidpp->battery.capacity || status != hidpp->battery.status) { hidpp->battery.capacity = capacity; hidpp->battery.status = status; if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); } return 0; } /* -------------------------------------------------------------------------- */ /* 0x6010: Touchpad FW items */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_TOUCHPAD_FW_ITEMS 0x6010 #define CMD_TOUCHPAD_FW_ITEMS_SET 0x10 struct hidpp_touchpad_fw_items { uint8_t presence; uint8_t desired_state; uint8_t state; uint8_t persistent; }; /* * send a set state command to the device by reading the current items->state * field. items is then filled with the current state. */ static int hidpp_touchpad_fw_items_set(struct hidpp_device *hidpp, u8 feature_index, struct hidpp_touchpad_fw_items *items) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_TOUCHPAD_FW_ITEMS_SET, &items->state, 1, &response); if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; items->presence = params[0]; items->desired_state = params[1]; items->state = params[2]; items->persistent = params[3]; return 0; } /* -------------------------------------------------------------------------- */ /* 0x6100: TouchPadRawXY */ /* -------------------------------------------------------------------------- */ #define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100 #define CMD_TOUCHPAD_GET_RAW_INFO 0x00 #define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x20 #define EVENT_TOUCHPAD_RAW_XY 0x00 #define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01 #define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03 struct hidpp_touchpad_raw_info { u16 x_size; u16 y_size; u8 z_range; u8 area_range; u8 timestamp_unit; u8 maxcontacts; u8 origin; u16 res; }; struct hidpp_touchpad_raw_xy_finger { u8 contact_type; u8 contact_status; u16 x; u16 y; u8 z; u8 area; u8 finger_id; }; struct hidpp_touchpad_raw_xy { u16 timestamp; struct hidpp_touchpad_raw_xy_finger fingers[2]; u8 spurious_flag; u8 end_of_frame; u8 finger_count; u8 button; }; static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp, u8 feature_index, struct hidpp_touchpad_raw_info *raw_info) { struct hidpp_report response; int ret; u8 *params = (u8 *)response.fap.params; ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_TOUCHPAD_GET_RAW_INFO, NULL, 0, &response); if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } if (ret) return ret; raw_info->x_size = get_unaligned_be16(¶ms[0]); raw_info->y_size = get_unaligned_be16(¶ms[2]); raw_info->z_range = params[4]; raw_info->area_range = params[5]; raw_info->maxcontacts = params[7]; raw_info->origin = params[8]; /* res is given in unit per inch */ raw_info->res = get_unaligned_be16(¶ms[13]) * 2 / 51; return ret; } static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev, u8 feature_index, bool send_raw_reports, bool sensor_enhanced_settings) { struct hidpp_report response; /* * Params: * bit 0 - enable raw * bit 1 - 16bit Z, no area * bit 2 - enhanced sensitivity * bit 3 - width, height (4 bits each) instead of area * bit 4 - send raw + gestures (degrades smoothness) * remaining bits - reserved */ u8 params = send_raw_reports | (sensor_enhanced_settings << 2); return hidpp_send_fap_command_sync(hidpp_dev, feature_index, CMD_TOUCHPAD_SET_RAW_REPORT_STATE, ¶ms, 1, &response); } static void hidpp_touchpad_touch_event(u8 *data, struct hidpp_touchpad_raw_xy_finger *finger) { u8 x_m = data[0] << 2; u8 y_m = data[2] << 2; finger->x = x_m << 6 | data[1]; finger->y = y_m << 6 | data[3]; finger->contact_type = data[0] >> 6; finger->contact_status = data[2] >> 6; finger->z = data[4]; finger->area = data[5]; finger->finger_id = data[6] >> 4; } static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev, u8 *data, struct hidpp_touchpad_raw_xy *raw_xy) { memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy)); raw_xy->end_of_frame = data[8] & 0x01; raw_xy->spurious_flag = (data[8] >> 1) & 0x01; raw_xy->finger_count = data[15] & 0x0f; raw_xy->button = (data[8] >> 2) & 0x01; if (raw_xy->finger_count) { hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]); hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]); } } /* -------------------------------------------------------------------------- */ /* 0x8123: Force feedback support */ /* -------------------------------------------------------------------------- */ #define HIDPP_FF_GET_INFO 0x01 #define HIDPP_FF_RESET_ALL 0x11 #define HIDPP_FF_DOWNLOAD_EFFECT 0x21 #define HIDPP_FF_SET_EFFECT_STATE 0x31 #define HIDPP_FF_DESTROY_EFFECT 0x41 #define HIDPP_FF_GET_APERTURE 0x51 #define HIDPP_FF_SET_APERTURE 0x61 #define HIDPP_FF_GET_GLOBAL_GAINS 0x71 #define HIDPP_FF_SET_GLOBAL_GAINS 0x81 #define HIDPP_FF_EFFECT_STATE_GET 0x00 #define HIDPP_FF_EFFECT_STATE_STOP 0x01 #define HIDPP_FF_EFFECT_STATE_PLAY 0x02 #define HIDPP_FF_EFFECT_STATE_PAUSE 0x03 #define HIDPP_FF_EFFECT_CONSTANT 0x00 #define HIDPP_FF_EFFECT_PERIODIC_SINE 0x01 #define HIDPP_FF_EFFECT_PERIODIC_SQUARE 0x02 #define HIDPP_FF_EFFECT_PERIODIC_TRIANGLE 0x03 #define HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHUP 0x04 #define HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHDOWN 0x05 #define HIDPP_FF_EFFECT_SPRING 0x06 #define HIDPP_FF_EFFECT_DAMPER 0x07 #define HIDPP_FF_EFFECT_FRICTION 0x08 #define HIDPP_FF_EFFECT_INERTIA 0x09 #define HIDPP_FF_EFFECT_RAMP 0x0A #define HIDPP_FF_EFFECT_AUTOSTART 0x80 #define HIDPP_FF_EFFECTID_NONE -1 #define HIDPP_FF_EFFECTID_AUTOCENTER -2 #define HIDPP_AUTOCENTER_PARAMS_LENGTH 18 #define HIDPP_FF_MAX_PARAMS 20 #define HIDPP_FF_RESERVED_SLOTS 1 struct hidpp_ff_private_data { struct hidpp_device *hidpp; u8 feature_index; u8 version; u16 gain; s16 range; u8 slot_autocenter; u8 num_effects; int *effect_ids; struct workqueue_struct *wq; atomic_t workqueue_size; }; struct hidpp_ff_work_data { struct work_struct work; struct hidpp_ff_private_data *data; int effect_id; u8 command; u8 params[HIDPP_FF_MAX_PARAMS]; u8 size; }; static const signed short hidpp_ff_effects[] = { FF_CONSTANT, FF_PERIODIC, FF_SINE, FF_SQUARE, FF_SAW_UP, FF_SAW_DOWN, FF_TRIANGLE, FF_SPRING, FF_DAMPER, FF_AUTOCENTER, FF_GAIN, -1 }; static const signed short hidpp_ff_effects_v2[] = { FF_RAMP, FF_FRICTION, FF_INERTIA, -1 }; static const u8 HIDPP_FF_CONDITION_CMDS[] = { HIDPP_FF_EFFECT_SPRING, HIDPP_FF_EFFECT_FRICTION, HIDPP_FF_EFFECT_DAMPER, HIDPP_FF_EFFECT_INERTIA }; static const char *HIDPP_FF_CONDITION_NAMES[] = { "spring", "friction", "damper", "inertia" }; static u8 hidpp_ff_find_effect(struct hidpp_ff_private_data *data, int effect_id) { int i; for (i = 0; i < data->num_effects; i++) if (data->effect_ids[i] == effect_id) return i+1; return 0; } static void hidpp_ff_work_handler(struct work_struct *w) { struct hidpp_ff_work_data *wd = container_of(w, struct hidpp_ff_work_data, work); struct hidpp_ff_private_data *data = wd->data; struct hidpp_report response; u8 slot; int ret; /* add slot number if needed */ switch (wd->effect_id) { case HIDPP_FF_EFFECTID_AUTOCENTER: wd->params[0] = data->slot_autocenter; break; case HIDPP_FF_EFFECTID_NONE: /* leave slot as zero */ break; default: /* find current slot for effect */ wd->params[0] = hidpp_ff_find_effect(data, wd->effect_id); break; } /* send command and wait for reply */ ret = hidpp_send_fap_command_sync(data->hidpp, data->feature_index, wd->command, wd->params, wd->size, &response); if (ret) { hid_err(data->hidpp->hid_dev, "Failed to send command to device!\n"); goto out; } /* parse return data */ switch (wd->command) { case HIDPP_FF_DOWNLOAD_EFFECT: slot = response.fap.params[0]; if (slot > 0 && slot <= data->num_effects) { if (wd->effect_id >= 0) /* regular effect uploaded */ data->effect_ids[slot-1] = wd->effect_id; else if (wd->effect_id >= HIDPP_FF_EFFECTID_AUTOCENTER) /* autocenter spring uploaded */ data->slot_autocenter = slot; } break; case HIDPP_FF_DESTROY_EFFECT: if (wd->effect_id >= 0) /* regular effect destroyed */ data->effect_ids[wd->params[0]-1] = -1; else if (wd->effect_id >= HIDPP_FF_EFFECTID_AUTOCENTER) /* autocenter spring destroyed */ data->slot_autocenter = 0; break; case HIDPP_FF_SET_GLOBAL_GAINS: data->gain = (wd->params[0] << 8) + wd->params[1]; break; case HIDPP_FF_SET_APERTURE: data->range = (wd->params[0] << 8) + wd->params[1]; break; default: /* no action needed */ break; } out: atomic_dec(&data->workqueue_size); kfree(wd); } static int hidpp_ff_queue_work(struct hidpp_ff_private_data *data, int effect_id, u8 command, u8 *params, u8 size) { struct hidpp_ff_work_data *wd = kzalloc(sizeof(*wd), GFP_KERNEL); int s; if (!wd) return -ENOMEM; INIT_WORK(&wd->work, hidpp_ff_work_handler); wd->data = data; wd->effect_id = effect_id; wd->command = command; wd->size = size; memcpy(wd->params, params, size); s = atomic_inc_return(&data->workqueue_size); queue_work(data->wq, &wd->work); /* warn about excessive queue size */ if (s >= 20 && s % 20 == 0) hid_warn(data->hidpp->hid_dev, "Force feedback command queue contains %d commands, causing substantial delays!", s); return 0; } static int hidpp_ff_upload_effect(struct input_dev *dev, struct ff_effect *effect, struct ff_effect *old) { struct hidpp_ff_private_data *data = dev->ff->private; u8 params[20]; u8 size; int force; /* set common parameters */ params[2] = effect->replay.length >> 8; params[3] = effect->replay.length & 255; params[4] = effect->replay.delay >> 8; params[5] = effect->replay.delay & 255; switch (effect->type) { case FF_CONSTANT: force = (effect->u.constant.level * fixp_sin16((effect->direction * 360) >> 16)) >> 15; params[1] = HIDPP_FF_EFFECT_CONSTANT; params[6] = force >> 8; params[7] = force & 255; params[8] = effect->u.constant.envelope.attack_level >> 7; params[9] = effect->u.constant.envelope.attack_length >> 8; params[10] = effect->u.constant.envelope.attack_length & 255; params[11] = effect->u.constant.envelope.fade_level >> 7; params[12] = effect->u.constant.envelope.fade_length >> 8; params[13] = effect->u.constant.envelope.fade_length & 255; size = 14; dbg_hid("Uploading constant force level=%d in dir %d = %d\n", effect->u.constant.level, effect->direction, force); dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n", effect->u.constant.envelope.attack_level, effect->u.constant.envelope.attack_length, effect->u.constant.envelope.fade_level, effect->u.constant.envelope.fade_length); break; case FF_PERIODIC: { switch (effect->u.periodic.waveform) { case FF_SINE: params[1] = HIDPP_FF_EFFECT_PERIODIC_SINE; break; case FF_SQUARE: params[1] = HIDPP_FF_EFFECT_PERIODIC_SQUARE; break; case FF_SAW_UP: params[1] = HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHUP; break; case FF_SAW_DOWN: params[1] = HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHDOWN; break; case FF_TRIANGLE: params[1] = HIDPP_FF_EFFECT_PERIODIC_TRIANGLE; break; default: hid_err(data->hidpp->hid_dev, "Unexpected periodic waveform type %i!\n", effect->u.periodic.waveform); return -EINVAL; } force = (effect->u.periodic.magnitude * fixp_sin16((effect->direction * 360) >> 16)) >> 15; params[6] = effect->u.periodic.magnitude >> 8; params[7] = effect->u.periodic.magnitude & 255; params[8] = effect->u.periodic.offset >> 8; params[9] = effect->u.periodic.offset & 255; params[10] = effect->u.periodic.period >> 8; params[11] = effect->u.periodic.period & 255; params[12] = effect->u.periodic.phase >> 8; params[13] = effect->u.periodic.phase & 255; params[14] = effect->u.periodic.envelope.attack_level >> 7; params[15] = effect->u.periodic.envelope.attack_length >> 8; params[16] = effect->u.periodic.envelope.attack_length & 255; params[17] = effect->u.periodic.envelope.fade_level >> 7; params[18] = effect->u.periodic.envelope.fade_length >> 8; params[19] = effect->u.periodic.envelope.fade_length & 255; size = 20; dbg_hid("Uploading periodic force mag=%d/dir=%d, offset=%d, period=%d ms, phase=%d\n", effect->u.periodic.magnitude, effect->direction, effect->u.periodic.offset, effect->u.periodic.period, effect->u.periodic.phase); dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n", effect->u.periodic.envelope.attack_level, effect->u.periodic.envelope.attack_length, effect->u.periodic.envelope.fade_level, effect->u.periodic.envelope.fade_length); break; } case FF_RAMP: params[1] = HIDPP_FF_EFFECT_RAMP; force = (effect->u.ramp.start_level * fixp_sin16((effect->direction * 360) >> 16)) >> 15; params[6] = force >> 8; params[7] = force & 255; force = (effect->u.ramp.end_level * fixp_sin16((effect->direction * 360) >> 16)) >> 15; params[8] = force >> 8; params[9] = force & 255; params[10] = effect->u.ramp.envelope.attack_level >> 7; params[11] = effect->u.ramp.envelope.attack_length >> 8; params[12] = effect->u.ramp.envelope.attack_length & 255; params[13] = effect->u.ramp.envelope.fade_level >> 7; params[14] = effect->u.ramp.envelope.fade_length >> 8; params[15] = effect->u.ramp.envelope.fade_length & 255; size = 16; dbg_hid("Uploading ramp force level=%d -> %d in dir %d = %d\n", effect->u.ramp.start_level, effect->u.ramp.end_level, effect->direction, force); dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n", effect->u.ramp.envelope.attack_level, effect->u.ramp.envelope.attack_length, effect->u.ramp.envelope.fade_level, effect->u.ramp.envelope.fade_length); break; case FF_FRICTION: case FF_INERTIA: case FF_SPRING: case FF_DAMPER: params[1] = HIDPP_FF_CONDITION_CMDS[effect->type - FF_SPRING]; params[6] = effect->u.condition[0].left_saturation >> 9; params[7] = (effect->u.condition[0].left_saturation >> 1) & 255; params[8] = effect->u.condition[0].left_coeff >> 8; params[9] = effect->u.condition[0].left_coeff & 255; params[10] = effect->u.condition[0].deadband >> 9; params[11] = (effect->u.condition[0].deadband >> 1) & 255; params[12] = effect->u.condition[0].center >> 8; params[13] = effect->u.condition[0].center & 255; params[14] = effect->u.condition[0].right_coeff >> 8; params[15] = effect->u.condition[0].right_coeff & 255; params[16] = effect->u.condition[0].right_saturation >> 9; params[17] = (effect->u.condition[0].right_saturation >> 1) & 255; size = 18; dbg_hid("Uploading %s force left coeff=%d, left sat=%d, right coeff=%d, right sat=%d\n", HIDPP_FF_CONDITION_NAMES[effect->type - FF_SPRING], effect->u.condition[0].left_coeff, effect->u.condition[0].left_saturation, effect->u.condition[0].right_coeff, effect->u.condition[0].right_saturation); dbg_hid(" deadband=%d, center=%d\n", effect->u.condition[0].deadband, effect->u.condition[0].center); break; default: hid_err(data->hidpp->hid_dev, "Unexpected force type %i!\n", effect->type); return -EINVAL; } return hidpp_ff_queue_work(data, effect->id, HIDPP_FF_DOWNLOAD_EFFECT, params, size); } static int hidpp_ff_playback(struct input_dev *dev, int effect_id, int value) { struct hidpp_ff_private_data *data = dev->ff->private; u8 params[2]; params[1] = value ? HIDPP_FF_EFFECT_STATE_PLAY : HIDPP_FF_EFFECT_STATE_STOP; dbg_hid("St%sing playback of effect %d.\n", value?"art":"opp", effect_id); return hidpp_ff_queue_work(data, effect_id, HIDPP_FF_SET_EFFECT_STATE, params, ARRAY_SIZE(params)); } static int hidpp_ff_erase_effect(struct input_dev *dev, int effect_id) { struct hidpp_ff_private_data *data = dev->ff->private; u8 slot = 0; dbg_hid("Erasing effect %d.\n", effect_id); return hidpp_ff_queue_work(data, effect_id, HIDPP_FF_DESTROY_EFFECT, &slot, 1); } static void hidpp_ff_set_autocenter(struct input_dev *dev, u16 magnitude) { struct hidpp_ff_private_data *data = dev->ff->private; u8 params[HIDPP_AUTOCENTER_PARAMS_LENGTH]; dbg_hid("Setting autocenter to %d.\n", magnitude); /* start a standard spring effect */ params[1] = HIDPP_FF_EFFECT_SPRING | HIDPP_FF_EFFECT_AUTOSTART; /* zero delay and duration */ params[2] = params[3] = params[4] = params[5] = 0; /* set coeff to 25% of saturation */ params[8] = params[14] = magnitude >> 11; params[9] = params[15] = (magnitude >> 3) & 255; params[6] = params[16] = magnitude >> 9; params[7] = params[17] = (magnitude >> 1) & 255; /* zero deadband and center */ params[10] = params[11] = params[12] = params[13] = 0; hidpp_ff_queue_work(data, HIDPP_FF_EFFECTID_AUTOCENTER, HIDPP_FF_DOWNLOAD_EFFECT, params, ARRAY_SIZE(params)); } static void hidpp_ff_set_gain(struct input_dev *dev, u16 gain) { struct hidpp_ff_private_data *data = dev->ff->private; u8 params[4]; dbg_hid("Setting gain to %d.\n", gain); params[0] = gain >> 8; params[1] = gain & 255; params[2] = 0; /* no boost */ params[3] = 0; hidpp_ff_queue_work(data, HIDPP_FF_EFFECTID_NONE, HIDPP_FF_SET_GLOBAL_GAINS, params, ARRAY_SIZE(params)); } static ssize_t hidpp_ff_range_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hid_device *hid = to_hid_device(dev); struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); struct input_dev *idev = hidinput->input; struct hidpp_ff_private_data *data = idev->ff->private; return scnprintf(buf, PAGE_SIZE, "%u\n", data->range); } static ssize_t hidpp_ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct hid_device *hid = to_hid_device(dev); struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); struct input_dev *idev = hidinput->input; struct hidpp_ff_private_data *data = idev->ff->private; u8 params[2]; int range = simple_strtoul(buf, NULL, 10); range = clamp(range, 180, 900); params[0] = range >> 8; params[1] = range & 0x00FF; hidpp_ff_queue_work(data, -1, HIDPP_FF_SET_APERTURE, params, ARRAY_SIZE(params)); return count; } static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, hidpp_ff_range_show, hidpp_ff_range_store); static void hidpp_ff_destroy(struct ff_device *ff) { struct hidpp_ff_private_data *data = ff->private; struct hid_device *hid = data->hidpp->hid_dev; hid_info(hid, "Unloading HID++ force feedback.\n"); device_remove_file(&hid->dev, &dev_attr_range); destroy_workqueue(data->wq); kfree(data->effect_ids); } static int hidpp_ff_init(struct hidpp_device *hidpp, struct hidpp_ff_private_data *data) { struct hid_device *hid = hidpp->hid_dev; struct hid_input *hidinput; struct input_dev *dev; struct usb_device_descriptor *udesc; u16 bcdDevice; struct ff_device *ff; int error, j, num_slots = data->num_effects; u8 version; if (!hid_is_usb(hid)) { hid_err(hid, "device is not USB\n"); return -ENODEV; } if (list_empty(&hid->inputs)) { hid_err(hid, "no inputs found\n"); return -ENODEV; } hidinput = list_entry(hid->inputs.next, struct hid_input, list); dev = hidinput->input; if (!dev) { hid_err(hid, "Struct input_dev not set!\n"); return -EINVAL; } /* Get firmware release */ udesc = &(hid_to_usb_dev(hid)->descriptor); bcdDevice = le16_to_cpu(udesc->bcdDevice); version = bcdDevice & 255; /* Set supported force feedback capabilities */ for (j = 0; hidpp_ff_effects[j] >= 0; j++) set_bit(hidpp_ff_effects[j], dev->ffbit); if (version > 1) for (j = 0; hidpp_ff_effects_v2[j] >= 0; j++) set_bit(hidpp_ff_effects_v2[j], dev->ffbit); error = input_ff_create(dev, num_slots); if (error) { hid_err(dev, "Failed to create FF device!\n"); return error; } /* * Create a copy of passed data, so we can transfer memory * ownership to FF core */ data = kmemdup(data, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; data->effect_ids = kcalloc(num_slots, sizeof(int), GFP_KERNEL); if (!data->effect_ids) { kfree(data); return -ENOMEM; } data->wq = create_singlethread_workqueue("hidpp-ff-sendqueue"); if (!data->wq) { kfree(data->effect_ids); kfree(data); return -ENOMEM; } data->hidpp = hidpp; data->version = version; for (j = 0; j < num_slots; j++) data->effect_ids[j] = -1; ff = dev->ff; ff->private = data; ff->upload = hidpp_ff_upload_effect; ff->erase = hidpp_ff_erase_effect; ff->playback = hidpp_ff_playback; ff->set_gain = hidpp_ff_set_gain; ff->set_autocenter = hidpp_ff_set_autocenter; ff->destroy = hidpp_ff_destroy; /* Create sysfs interface */ error = device_create_file(&(hidpp->hid_dev->dev), &dev_attr_range); if (error) hid_warn(hidpp->hid_dev, "Unable to create sysfs interface for \"range\", errno %d!\n", error); /* init the hardware command queue */ atomic_set(&data->workqueue_size, 0); hid_info(hid, "Force feedback support loaded (firmware release %d).\n", version); return 0; } /* ************************************************************************** */ /* */ /* Device Support */ /* */ /* ************************************************************************** */ /* -------------------------------------------------------------------------- */ /* Touchpad HID++ devices */ /* -------------------------------------------------------------------------- */ #define WTP_MANUAL_RESOLUTION 39 struct wtp_data { u16 x_size, y_size; u8 finger_count; u8 mt_feature_index; u8 button_feature_index; u8 maxcontacts; bool flip_y; unsigned int resolution; }; static int wtp_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { return -1; } static void wtp_populate_input(struct hidpp_device *hidpp, struct input_dev *input_dev) { struct wtp_data *wd = hidpp->private_data; __set_bit(EV_ABS, input_dev->evbit); __set_bit(EV_KEY, input_dev->evbit); __clear_bit(EV_REL, input_dev->evbit); __clear_bit(EV_LED, input_dev->evbit); input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, wd->x_size, 0, 0); input_abs_set_res(input_dev, ABS_MT_POSITION_X, wd->resolution); input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, wd->y_size, 0, 0); input_abs_set_res(input_dev, ABS_MT_POSITION_Y, wd->resolution); /* Max pressure is not given by the devices, pick one */ input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 50, 0, 0); input_set_capability(input_dev, EV_KEY, BTN_LEFT); if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) input_set_capability(input_dev, EV_KEY, BTN_RIGHT); else __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); input_mt_init_slots(input_dev, wd->maxcontacts, INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED); } static void wtp_touch_event(struct hidpp_device *hidpp, struct hidpp_touchpad_raw_xy_finger *touch_report) { struct wtp_data *wd = hidpp->private_data; int slot; if (!touch_report->finger_id || touch_report->contact_type) /* no actual data */ return; slot = input_mt_get_slot_by_key(hidpp->input, touch_report->finger_id); input_mt_slot(hidpp->input, slot); input_mt_report_slot_state(hidpp->input, MT_TOOL_FINGER, touch_report->contact_status); if (touch_report->contact_status) { input_event(hidpp->input, EV_ABS, ABS_MT_POSITION_X, touch_report->x); input_event(hidpp->input, EV_ABS, ABS_MT_POSITION_Y, wd->flip_y ? wd->y_size - touch_report->y : touch_report->y); input_event(hidpp->input, EV_ABS, ABS_MT_PRESSURE, touch_report->area); } } static void wtp_send_raw_xy_event(struct hidpp_device *hidpp, struct hidpp_touchpad_raw_xy *raw) { int i; for (i = 0; i < 2; i++) wtp_touch_event(hidpp, &(raw->fingers[i])); if (raw->end_of_frame && !(hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS)) input_event(hidpp->input, EV_KEY, BTN_LEFT, raw->button); if (raw->end_of_frame || raw->finger_count <= 2) { input_mt_sync_frame(hidpp->input); input_sync(hidpp->input); } } static int wtp_mouse_raw_xy_event(struct hidpp_device *hidpp, u8 *data) { struct wtp_data *wd = hidpp->private_data; u8 c1_area = ((data[7] & 0xf) * (data[7] & 0xf) + (data[7] >> 4) * (data[7] >> 4)) / 2; u8 c2_area = ((data[13] & 0xf) * (data[13] & 0xf) + (data[13] >> 4) * (data[13] >> 4)) / 2; struct hidpp_touchpad_raw_xy raw = { .timestamp = data[1], .fingers = { { .contact_type = 0, .contact_status = !!data[7], .x = get_unaligned_le16(&data[3]), .y = get_unaligned_le16(&data[5]), .z = c1_area, .area = c1_area, .finger_id = data[2], }, { .contact_type = 0, .contact_status = !!data[13], .x = get_unaligned_le16(&data[9]), .y = get_unaligned_le16(&data[11]), .z = c2_area, .area = c2_area, .finger_id = data[8], } }, .finger_count = wd->maxcontacts, .spurious_flag = 0, .end_of_frame = (data[0] >> 7) == 0, .button = data[0] & 0x01, }; wtp_send_raw_xy_event(hidpp, &raw); return 1; } static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct wtp_data *wd = hidpp->private_data; struct hidpp_report *report = (struct hidpp_report *)data; struct hidpp_touchpad_raw_xy raw; if (!wd || !hidpp->input) return 1; switch (data[0]) { case 0x02: if (size < 2) { hid_err(hdev, "Received HID report of bad size (%d)", size); return 1; } if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) { input_event(hidpp->input, EV_KEY, BTN_LEFT, !!(data[1] & 0x01)); input_event(hidpp->input, EV_KEY, BTN_RIGHT, !!(data[1] & 0x02)); input_sync(hidpp->input); return 0; } else { if (size < 21) return 1; return wtp_mouse_raw_xy_event(hidpp, &data[7]); } case REPORT_ID_HIDPP_LONG: /* size is already checked in hidpp_raw_event. */ if ((report->fap.feature_index != wd->mt_feature_index) || (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY)) return 1; hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw); wtp_send_raw_xy_event(hidpp, &raw); return 0; } return 0; } static int wtp_get_config(struct hidpp_device *hidpp) { struct wtp_data *wd = hidpp->private_data; struct hidpp_touchpad_raw_info raw_info = {0}; int ret; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_RAW_XY, &wd->mt_feature_index); if (ret) /* means that the device is not powered up */ return ret; ret = hidpp_touchpad_get_raw_info(hidpp, wd->mt_feature_index, &raw_info); if (ret) return ret; wd->x_size = raw_info.x_size; wd->y_size = raw_info.y_size; wd->maxcontacts = raw_info.maxcontacts; wd->flip_y = raw_info.origin == TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT; wd->resolution = raw_info.res; if (!wd->resolution) wd->resolution = WTP_MANUAL_RESOLUTION; return 0; } static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct wtp_data *wd; wd = devm_kzalloc(&hdev->dev, sizeof(struct wtp_data), GFP_KERNEL); if (!wd) return -ENOMEM; hidpp->private_data = wd; return 0; }; static int wtp_connect(struct hid_device *hdev) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct wtp_data *wd = hidpp->private_data; int ret; if (!wd->x_size) { ret = wtp_get_config(hidpp); if (ret) { hid_err(hdev, "Can not get wtp config: %d\n", ret); return ret; } } return hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index, true, true); } /* ------------------------------------------------------------------------- */ /* Logitech M560 devices */ /* ------------------------------------------------------------------------- */ /* * Logitech M560 protocol overview * * The Logitech M560 mouse, is designed for windows 8. When the middle and/or * the sides buttons are pressed, it sends some keyboard keys events * instead of buttons ones. * To complicate things further, the middle button keys sequence * is different from the odd press and the even press. * * forward button -> Super_R * backward button -> Super_L+'d' (press only) * middle button -> 1st time: Alt_L+SuperL+XF86TouchpadOff (press only) * 2nd time: left-click (press only) * NB: press-only means that when the button is pressed, the * KeyPress/ButtonPress and KeyRelease/ButtonRelease events are generated * together sequentially; instead when the button is released, no event is * generated ! * * With the command * 10<xx>0a 3500af03 (where <xx> is the mouse id), * the mouse reacts differently: * - it never sends a keyboard key event * - for the three mouse button it sends: * middle button press 11<xx>0a 3500af00... * side 1 button (forward) press 11<xx>0a 3500b000... * side 2 button (backward) press 11<xx>0a 3500ae00... * middle/side1/side2 button release 11<xx>0a 35000000... */ static const u8 m560_config_parameter[] = {0x00, 0xaf, 0x03}; /* how buttons are mapped in the report */ #define M560_MOUSE_BTN_LEFT 0x01 #define M560_MOUSE_BTN_RIGHT 0x02 #define M560_MOUSE_BTN_WHEEL_LEFT 0x08 #define M560_MOUSE_BTN_WHEEL_RIGHT 0x10 #define M560_SUB_ID 0x0a #define M560_BUTTON_MODE_REGISTER 0x35 static int m560_send_config_command(struct hid_device *hdev) { struct hidpp_report response; struct hidpp_device *hidpp_dev; hidpp_dev = hid_get_drvdata(hdev); return hidpp_send_rap_command_sync( hidpp_dev, REPORT_ID_HIDPP_SHORT, M560_SUB_ID, M560_BUTTON_MODE_REGISTER, (u8 *)m560_config_parameter, sizeof(m560_config_parameter), &response ); } static int m560_raw_event(struct hid_device *hdev, u8 *data, int size) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); /* sanity check */ if (!hidpp->input) { hid_err(hdev, "error in parameter\n"); return -EINVAL; } if (size < 7) { hid_err(hdev, "error in report\n"); return 0; } if (data[0] == REPORT_ID_HIDPP_LONG && data[2] == M560_SUB_ID && data[6] == 0x00) { /* * m560 mouse report for middle, forward and backward button * * data[0] = 0x11 * data[1] = device-id * data[2] = 0x0a * data[5] = 0xaf -> middle * 0xb0 -> forward * 0xae -> backward * 0x00 -> release all * data[6] = 0x00 */ switch (data[5]) { case 0xaf: input_report_key(hidpp->input, BTN_MIDDLE, 1); break; case 0xb0: input_report_key(hidpp->input, BTN_FORWARD, 1); break; case 0xae: input_report_key(hidpp->input, BTN_BACK, 1); break; case 0x00: input_report_key(hidpp->input, BTN_BACK, 0); input_report_key(hidpp->input, BTN_FORWARD, 0); input_report_key(hidpp->input, BTN_MIDDLE, 0); break; default: hid_err(hdev, "error in report\n"); return 0; } input_sync(hidpp->input); } else if (data[0] == 0x02) { /* * Logitech M560 mouse report * * data[0] = type (0x02) * data[1..2] = buttons * data[3..5] = xy * data[6] = wheel */ int v; input_report_key(hidpp->input, BTN_LEFT, !!(data[1] & M560_MOUSE_BTN_LEFT)); input_report_key(hidpp->input, BTN_RIGHT, !!(data[1] & M560_MOUSE_BTN_RIGHT)); if (data[1] & M560_MOUSE_BTN_WHEEL_LEFT) { input_report_rel(hidpp->input, REL_HWHEEL, -1); input_report_rel(hidpp->input, REL_HWHEEL_HI_RES, -120); } else if (data[1] & M560_MOUSE_BTN_WHEEL_RIGHT) { input_report_rel(hidpp->input, REL_HWHEEL, 1); input_report_rel(hidpp->input, REL_HWHEEL_HI_RES, 120); } v = sign_extend32(hid_field_extract(hdev, data + 3, 0, 12), 11); input_report_rel(hidpp->input, REL_X, v); v = sign_extend32(hid_field_extract(hdev, data + 3, 12, 12), 11); input_report_rel(hidpp->input, REL_Y, v); v = sign_extend32(data[6], 7); if (v != 0) hidpp_scroll_counter_handle_scroll(hidpp->input, &hidpp->vertical_wheel_counter, v); input_sync(hidpp->input); } return 1; } static void m560_populate_input(struct hidpp_device *hidpp, struct input_dev *input_dev) { __set_bit(EV_KEY, input_dev->evbit); __set_bit(BTN_MIDDLE, input_dev->keybit); __set_bit(BTN_RIGHT, input_dev->keybit); __set_bit(BTN_LEFT, input_dev->keybit); __set_bit(BTN_BACK, input_dev->keybit); __set_bit(BTN_FORWARD, input_dev->keybit); __set_bit(EV_REL, input_dev->evbit); __set_bit(REL_X, input_dev->relbit); __set_bit(REL_Y, input_dev->relbit); __set_bit(REL_WHEEL, input_dev->relbit); __set_bit(REL_HWHEEL, input_dev->relbit); __set_bit(REL_WHEEL_HI_RES, input_dev->relbit); __set_bit(REL_HWHEEL_HI_RES, input_dev->relbit); } static int m560_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { return -1; } /* ------------------------------------------------------------------------- */ /* Logitech K400 devices */ /* ------------------------------------------------------------------------- */ /* * The Logitech K400 keyboard has an embedded touchpad which is seen * as a mouse from the OS point of view. There is a hardware shortcut to disable * tap-to-click but the setting is not remembered accross reset, annoying some * users. * * We can toggle this feature from the host by using the feature 0x6010: * Touchpad FW items */ struct k400_private_data { u8 feature_index; }; static int k400_disable_tap_to_click(struct hidpp_device *hidpp) { struct k400_private_data *k400 = hidpp->private_data; struct hidpp_touchpad_fw_items items = {}; int ret; if (!k400->feature_index) { ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_FW_ITEMS, &k400->feature_index); if (ret) /* means that the device is not powered up */ return ret; } ret = hidpp_touchpad_fw_items_set(hidpp, k400->feature_index, &items); if (ret) return ret; return 0; } static int k400_allocate(struct hid_device *hdev) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct k400_private_data *k400; k400 = devm_kzalloc(&hdev->dev, sizeof(struct k400_private_data), GFP_KERNEL); if (!k400) return -ENOMEM; hidpp->private_data = k400; return 0; }; static int k400_connect(struct hid_device *hdev) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); if (!disable_tap_to_click) return 0; return k400_disable_tap_to_click(hidpp); } /* ------------------------------------------------------------------------- */ /* Logitech G920 Driving Force Racing Wheel for Xbox One */ /* ------------------------------------------------------------------------- */ #define HIDPP_PAGE_G920_FORCE_FEEDBACK 0x8123 static int g920_ff_set_autocenter(struct hidpp_device *hidpp, struct hidpp_ff_private_data *data) { struct hidpp_report response; u8 params[HIDPP_AUTOCENTER_PARAMS_LENGTH] = { [1] = HIDPP_FF_EFFECT_SPRING | HIDPP_FF_EFFECT_AUTOSTART, }; int ret; /* initialize with zero autocenter to get wheel in usable state */ dbg_hid("Setting autocenter to 0.\n"); ret = hidpp_send_fap_command_sync(hidpp, data->feature_index, HIDPP_FF_DOWNLOAD_EFFECT, params, ARRAY_SIZE(params), &response); if (ret) hid_warn(hidpp->hid_dev, "Failed to autocenter device!\n"); else data->slot_autocenter = response.fap.params[0]; return ret; } static int g920_get_config(struct hidpp_device *hidpp, struct hidpp_ff_private_data *data) { struct hidpp_report response; int ret; memset(data, 0, sizeof(*data)); /* Find feature and store for later use */ ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_G920_FORCE_FEEDBACK, &data->feature_index); if (ret) return ret; /* Read number of slots available in device */ ret = hidpp_send_fap_command_sync(hidpp, data->feature_index, HIDPP_FF_GET_INFO, NULL, 0, &response); if (ret) { if (ret < 0) return ret; hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); return -EPROTO; } data->num_effects = response.fap.params[0] - HIDPP_FF_RESERVED_SLOTS; /* reset all forces */ ret = hidpp_send_fap_command_sync(hidpp, data->feature_index, HIDPP_FF_RESET_ALL, NULL, 0, &response); if (ret) hid_warn(hidpp->hid_dev, "Failed to reset all forces!\n"); ret = hidpp_send_fap_command_sync(hidpp, data->feature_index, HIDPP_FF_GET_APERTURE, NULL, 0, &response); if (ret) { hid_warn(hidpp->hid_dev, "Failed to read range from device!\n"); } data->range = ret ? 900 : get_unaligned_be16(&response.fap.params[0]); /* Read the current gain values */ ret = hidpp_send_fap_command_sync(hidpp, data->feature_index, HIDPP_FF_GET_GLOBAL_GAINS, NULL, 0, &response); if (ret) hid_warn(hidpp->hid_dev, "Failed to read gain values from device!\n"); data->gain = ret ? 0xffff : get_unaligned_be16(&response.fap.params[0]); /* ignore boost value at response.fap.params[2] */ return g920_ff_set_autocenter(hidpp, data); } /* -------------------------------------------------------------------------- */ /* Logitech Dinovo Mini keyboard with builtin touchpad */ /* -------------------------------------------------------------------------- */ #define DINOVO_MINI_PRODUCT_ID 0xb30c static int lg_dinovo_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { if ((usage->hid & HID_USAGE_PAGE) != HID_UP_LOGIVENDOR) return 0; switch (usage->hid & HID_USAGE) { case 0x00d: lg_map_key_clear(KEY_MEDIA); break; default: return 0; } return 1; } /* -------------------------------------------------------------------------- */ /* HID++1.0 devices which use HID++ reports for their wheels */ /* -------------------------------------------------------------------------- */ static int hidpp10_wheel_connect(struct hidpp_device *hidpp) { return hidpp10_set_register(hidpp, HIDPP_REG_ENABLE_REPORTS, 0, HIDPP_ENABLE_WHEEL_REPORT | HIDPP_ENABLE_HWHEEL_REPORT, HIDPP_ENABLE_WHEEL_REPORT | HIDPP_ENABLE_HWHEEL_REPORT); } static int hidpp10_wheel_raw_event(struct hidpp_device *hidpp, u8 *data, int size) { s8 value, hvalue; if (!hidpp->input) return -EINVAL; if (size < 7) return 0; if (data[0] != REPORT_ID_HIDPP_SHORT || data[2] != HIDPP_SUB_ID_ROLLER) return 0; value = data[3]; hvalue = data[4]; input_report_rel(hidpp->input, REL_WHEEL, value); input_report_rel(hidpp->input, REL_WHEEL_HI_RES, value * 120); input_report_rel(hidpp->input, REL_HWHEEL, hvalue); input_report_rel(hidpp->input, REL_HWHEEL_HI_RES, hvalue * 120); input_sync(hidpp->input); return 1; } static void hidpp10_wheel_populate_input(struct hidpp_device *hidpp, struct input_dev *input_dev) { __set_bit(EV_REL, input_dev->evbit); __set_bit(REL_WHEEL, input_dev->relbit); __set_bit(REL_WHEEL_HI_RES, input_dev->relbit); __set_bit(REL_HWHEEL, input_dev->relbit); __set_bit(REL_HWHEEL_HI_RES, input_dev->relbit); } /* -------------------------------------------------------------------------- */ /* HID++1.0 mice which use HID++ reports for extra mouse buttons */ /* -------------------------------------------------------------------------- */ static int hidpp10_extra_mouse_buttons_connect(struct hidpp_device *hidpp) { return hidpp10_set_register(hidpp, HIDPP_REG_ENABLE_REPORTS, 0, HIDPP_ENABLE_MOUSE_EXTRA_BTN_REPORT, HIDPP_ENABLE_MOUSE_EXTRA_BTN_REPORT); } static int hidpp10_extra_mouse_buttons_raw_event(struct hidpp_device *hidpp, u8 *data, int size) { int i; if (!hidpp->input) return -EINVAL; if (size < 7) return 0; if (data[0] != REPORT_ID_HIDPP_SHORT || data[2] != HIDPP_SUB_ID_MOUSE_EXTRA_BTNS) return 0; /* * Buttons are either delivered through the regular mouse report *or* * through the extra buttons report. At least for button 6 how it is * delivered differs per receiver firmware version. Even receivers with * the same usb-id show different behavior, so we handle both cases. */ for (i = 0; i < 8; i++) input_report_key(hidpp->input, BTN_MOUSE + i, (data[3] & (1 << i))); /* Some mice report events on button 9+, use BTN_MISC */ for (i = 0; i < 8; i++) input_report_key(hidpp->input, BTN_MISC + i, (data[4] & (1 << i))); input_sync(hidpp->input); return 1; } static void hidpp10_extra_mouse_buttons_populate_input( struct hidpp_device *hidpp, struct input_dev *input_dev) { /* BTN_MOUSE - BTN_MOUSE+7 are set already by the descriptor */ __set_bit(BTN_0, input_dev->keybit); __set_bit(BTN_1, input_dev->keybit); __set_bit(BTN_2, input_dev->keybit); __set_bit(BTN_3, input_dev->keybit); __set_bit(BTN_4, input_dev->keybit); __set_bit(BTN_5, input_dev->keybit); __set_bit(BTN_6, input_dev->keybit); __set_bit(BTN_7, input_dev->keybit); } /* -------------------------------------------------------------------------- */ /* HID++1.0 kbds which only report 0x10xx consumer usages through sub-id 0x03 */ /* -------------------------------------------------------------------------- */ /* Find the consumer-page input report desc and change Maximums to 0x107f */ static u8 *hidpp10_consumer_keys_report_fixup(struct hidpp_device *hidpp, u8 *_rdesc, unsigned int *rsize) { /* Note 0 terminated so we can use strnstr to search for this. */ static const char consumer_rdesc_start[] = { 0x05, 0x0C, /* USAGE_PAGE (Consumer Devices) */ 0x09, 0x01, /* USAGE (Consumer Control) */ 0xA1, 0x01, /* COLLECTION (Application) */ 0x85, 0x03, /* REPORT_ID = 3 */ 0x75, 0x10, /* REPORT_SIZE (16) */ 0x95, 0x02, /* REPORT_COUNT (2) */ 0x15, 0x01, /* LOGICAL_MIN (1) */ 0x26, 0x00 /* LOGICAL_MAX (... */ }; char *consumer_rdesc, *rdesc = (char *)_rdesc; unsigned int size; consumer_rdesc = strnstr(rdesc, consumer_rdesc_start, *rsize); size = *rsize - (consumer_rdesc - rdesc); if (consumer_rdesc && size >= 25) { consumer_rdesc[15] = 0x7f; consumer_rdesc[16] = 0x10; consumer_rdesc[20] = 0x7f; consumer_rdesc[21] = 0x10; } return _rdesc; } static int hidpp10_consumer_keys_connect(struct hidpp_device *hidpp) { return hidpp10_set_register(hidpp, HIDPP_REG_ENABLE_REPORTS, 0, HIDPP_ENABLE_CONSUMER_REPORT, HIDPP_ENABLE_CONSUMER_REPORT); } static int hidpp10_consumer_keys_raw_event(struct hidpp_device *hidpp, u8 *data, int size) { u8 consumer_report[5]; if (size < 7) return 0; if (data[0] != REPORT_ID_HIDPP_SHORT || data[2] != HIDPP_SUB_ID_CONSUMER_VENDOR_KEYS) return 0; /* * Build a normal consumer report (3) out of the data, this detour * is necessary to get some keyboards to report their 0x10xx usages. */ consumer_report[0] = 0x03; memcpy(&consumer_report[1], &data[3], 4); /* We are called from atomic context */ hid_report_raw_event(hidpp->hid_dev, HID_INPUT_REPORT, consumer_report, 5, 1); return 1; } /* -------------------------------------------------------------------------- */ /* High-resolution scroll wheels */ /* -------------------------------------------------------------------------- */ static int hi_res_scroll_enable(struct hidpp_device *hidpp) { int ret; u8 multiplier = 1; if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_HI_RES_WHEEL) { ret = hidpp_hrw_set_wheel_mode(hidpp, false, true, false); if (ret == 0) ret = hidpp_hrw_get_wheel_capability(hidpp, &multiplier); } else if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_HI_RES_SCROLL) { ret = hidpp_hrs_set_highres_scrolling_mode(hidpp, true, &multiplier); } else /* if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP10_FAST_SCROLL) */ { ret = hidpp10_enable_scrolling_acceleration(hidpp); multiplier = 8; } if (ret) { hid_dbg(hidpp->hid_dev, "Could not enable hi-res scrolling: %d\n", ret); return ret; } if (multiplier == 0) { hid_dbg(hidpp->hid_dev, "Invalid multiplier 0 from device, setting it to 1\n"); multiplier = 1; } hidpp->vertical_wheel_counter.wheel_multiplier = multiplier; hid_dbg(hidpp->hid_dev, "wheel multiplier = %d\n", multiplier); return 0; } static int hidpp_initialize_hires_scroll(struct hidpp_device *hidpp) { int ret; unsigned long capabilities; capabilities = hidpp->capabilities; if (hidpp->protocol_major >= 2) { u8 feature_index; ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_HIRES_WHEEL, &feature_index); if (!ret) { hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP20_HI_RES_WHEEL; hid_dbg(hidpp->hid_dev, "Detected HID++ 2.0 hi-res scroll wheel\n"); return 0; } ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_HI_RESOLUTION_SCROLLING, &feature_index); if (!ret) { hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP20_HI_RES_SCROLL; hid_dbg(hidpp->hid_dev, "Detected HID++ 2.0 hi-res scrolling\n"); } } else { /* We cannot detect fast scrolling support on HID++ 1.0 devices */ if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_1P0) { hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP10_FAST_SCROLL; hid_dbg(hidpp->hid_dev, "Detected HID++ 1.0 fast scroll\n"); } } if (hidpp->capabilities == capabilities) hid_dbg(hidpp->hid_dev, "Did not detect HID++ hi-res scrolling hardware support\n"); return 0; } /* -------------------------------------------------------------------------- */ /* Generic HID++ devices */ /* -------------------------------------------------------------------------- */ static const u8 *hidpp_report_fixup(struct hid_device *hdev, u8 *rdesc, unsigned int *rsize) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); if (!hidpp) return rdesc; /* For 27 MHz keyboards the quirk gets set after hid_parse. */ if (hdev->group == HID_GROUP_LOGITECH_27MHZ_DEVICE || (hidpp->quirks & HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS)) rdesc = hidpp10_consumer_keys_report_fixup(hidpp, rdesc, rsize); return rdesc; } static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); if (!hidpp) return 0; if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) return wtp_input_mapping(hdev, hi, field, usage, bit, max); else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560 && field->application != HID_GD_MOUSE) return m560_input_mapping(hdev, hi, field, usage, bit, max); if (hdev->product == DINOVO_MINI_PRODUCT_ID) return lg_dinovo_input_mapping(hdev, hi, field, usage, bit, max); return 0; } static int hidpp_input_mapped(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); if (!hidpp) return 0; /* Ensure that Logitech G920 is not given a default fuzz/flat value */ if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) { if (usage->type == EV_ABS && (usage->code == ABS_X || usage->code == ABS_Y || usage->code == ABS_Z || usage->code == ABS_RZ)) { field->application = HID_GD_MULTIAXIS; } } return 0; } static void hidpp_populate_input(struct hidpp_device *hidpp, struct input_dev *input) { hidpp->input = input; if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) wtp_populate_input(hidpp, input); else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) m560_populate_input(hidpp, input); if (hidpp->quirks & HIDPP_QUIRK_HIDPP_WHEELS) hidpp10_wheel_populate_input(hidpp, input); if (hidpp->quirks & HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS) hidpp10_extra_mouse_buttons_populate_input(hidpp, input); } static int hidpp_input_configured(struct hid_device *hdev, struct hid_input *hidinput) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct input_dev *input = hidinput->input; if (!hidpp) return 0; hidpp_populate_input(hidpp, input); return 0; } static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data, int size) { struct hidpp_report *question = hidpp->send_receive_buf; struct hidpp_report *answer = hidpp->send_receive_buf; struct hidpp_report *report = (struct hidpp_report *)data; int ret; /* * If the mutex is locked then we have a pending answer from a * previously sent command. */ if (unlikely(mutex_is_locked(&hidpp->send_mutex))) { /* * Check for a correct hidpp20 answer or the corresponding * error */ if (hidpp_match_answer(question, report) || hidpp_match_error(question, report)) { *answer = *report; hidpp->answer_available = true; wake_up(&hidpp->wait); /* * This was an answer to a command that this driver sent * We return 1 to hid-core to avoid forwarding the * command upstream as it has been treated by the driver */ return 1; } } if (unlikely(hidpp_report_is_connect_event(hidpp, report))) { if (schedule_work(&hidpp->work) == 0) dbg_hid("%s: connect event already queued\n", __func__); return 1; } if (hidpp->hid_dev->group == HID_GROUP_LOGITECH_27MHZ_DEVICE && data[0] == REPORT_ID_HIDPP_SHORT && data[2] == HIDPP_SUB_ID_USER_IFACE_EVENT && (data[3] & HIDPP_USER_IFACE_EVENT_ENCRYPTION_KEY_LOST)) { dev_err_ratelimited(&hidpp->hid_dev->dev, "Error the keyboard's wireless encryption key has been lost, your keyboard will not work unless you re-configure encryption.\n"); dev_err_ratelimited(&hidpp->hid_dev->dev, "See: https://gitlab.freedesktop.org/jwrdegoede/logitech-27mhz-keyboard-encryption-setup/\n"); } if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_BATTERY) { ret = hidpp20_battery_event_1000(hidpp, data, size); if (ret != 0) return ret; ret = hidpp20_battery_event_1004(hidpp, data, size); if (ret != 0) return ret; ret = hidpp_solar_battery_event(hidpp, data, size); if (ret != 0) return ret; ret = hidpp20_battery_voltage_event(hidpp, data, size); if (ret != 0) return ret; ret = hidpp20_adc_measurement_event_1f20(hidpp, data, size); if (ret != 0) return ret; } if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP10_BATTERY) { ret = hidpp10_battery_event(hidpp, data, size); if (ret != 0) return ret; } if (hidpp->quirks & HIDPP_QUIRK_HIDPP_WHEELS) { ret = hidpp10_wheel_raw_event(hidpp, data, size); if (ret != 0) return ret; } if (hidpp->quirks & HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS) { ret = hidpp10_extra_mouse_buttons_raw_event(hidpp, data, size); if (ret != 0) return ret; } if (hidpp->quirks & HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS) { ret = hidpp10_consumer_keys_raw_event(hidpp, data, size); if (ret != 0) return ret; } return 0; } static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); int ret = 0; if (!hidpp) return 0; /* Generic HID++ processing. */ switch (data[0]) { case REPORT_ID_HIDPP_VERY_LONG: if (size != hidpp->very_long_report_length) { hid_err(hdev, "received hid++ report of bad size (%d)", size); return 1; } ret = hidpp_raw_hidpp_event(hidpp, data, size); break; case REPORT_ID_HIDPP_LONG: if (size != HIDPP_REPORT_LONG_LENGTH) { hid_err(hdev, "received hid++ report of bad size (%d)", size); return 1; } ret = hidpp_raw_hidpp_event(hidpp, data, size); break; case REPORT_ID_HIDPP_SHORT: if (size != HIDPP_REPORT_SHORT_LENGTH) { hid_err(hdev, "received hid++ report of bad size (%d)", size); return 1; } ret = hidpp_raw_hidpp_event(hidpp, data, size); break; } /* If no report is available for further processing, skip calling * raw_event of subclasses. */ if (ret != 0) return ret; if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) return wtp_raw_event(hdev, data, size); else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) return m560_raw_event(hdev, data, size); return 0; } static int hidpp_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { /* This function will only be called for scroll events, due to the * restriction imposed in hidpp_usages. */ struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct hidpp_scroll_counter *counter; if (!hidpp) return 0; counter = &hidpp->vertical_wheel_counter; /* A scroll event may occur before the multiplier has been retrieved or * the input device set, or high-res scroll enabling may fail. In such * cases we must return early (falling back to default behaviour) to * avoid a crash in hidpp_scroll_counter_handle_scroll. */ if (!(hidpp->capabilities & HIDPP_CAPABILITY_HI_RES_SCROLL) || value == 0 || hidpp->input == NULL || counter->wheel_multiplier == 0) return 0; hidpp_scroll_counter_handle_scroll(hidpp->input, counter, value); return 1; } static int hidpp_initialize_battery(struct hidpp_device *hidpp) { static atomic_t battery_no = ATOMIC_INIT(0); struct power_supply_config cfg = { .drv_data = hidpp }; struct power_supply_desc *desc = &hidpp->battery.desc; enum power_supply_property *battery_props; struct hidpp_battery *battery; unsigned int num_battery_props; unsigned long n; int ret; if (hidpp->battery.ps) return 0; hidpp->battery.feature_index = 0xff; hidpp->battery.solar_feature_index = 0xff; hidpp->battery.voltage_feature_index = 0xff; hidpp->battery.adc_measurement_feature_index = 0xff; if (hidpp->protocol_major >= 2) { if (hidpp->quirks & HIDPP_QUIRK_CLASS_K750) ret = hidpp_solar_request_battery_event(hidpp); else { /* we only support one battery feature right now, so let's first check the ones that support battery level first and leave voltage for last */ ret = hidpp20_query_battery_info_1000(hidpp); if (ret) ret = hidpp20_query_battery_info_1004(hidpp); if (ret) ret = hidpp20_query_battery_voltage_info(hidpp); if (ret) ret = hidpp20_query_adc_measurement_info_1f20(hidpp); } if (ret) return ret; hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP20_BATTERY; } else { ret = hidpp10_query_battery_status(hidpp); if (ret) { ret = hidpp10_query_battery_mileage(hidpp); if (ret) return -ENOENT; hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_MILEAGE; } else { hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS; } hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP10_BATTERY; } battery_props = devm_kmemdup(&hidpp->hid_dev->dev, hidpp_battery_props, sizeof(hidpp_battery_props), GFP_KERNEL); if (!battery_props) return -ENOMEM; num_battery_props = ARRAY_SIZE(hidpp_battery_props) - 3; if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_MILEAGE || hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_PERCENTAGE || hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_VOLTAGE || hidpp->capabilities & HIDPP_CAPABILITY_ADC_MEASUREMENT) battery_props[num_battery_props++] = POWER_SUPPLY_PROP_CAPACITY; if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS) battery_props[num_battery_props++] = POWER_SUPPLY_PROP_CAPACITY_LEVEL; if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_VOLTAGE || hidpp->capabilities & HIDPP_CAPABILITY_ADC_MEASUREMENT) battery_props[num_battery_props++] = POWER_SUPPLY_PROP_VOLTAGE_NOW; battery = &hidpp->battery; n = atomic_inc_return(&battery_no) - 1; desc->properties = battery_props; desc->num_properties = num_battery_props; desc->get_property = hidpp_battery_get_property; sprintf(battery->name, "hidpp_battery_%ld", n); desc->name = battery->name; desc->type = POWER_SUPPLY_TYPE_BATTERY; desc->use_for_apm = 0; battery->ps = devm_power_supply_register(&hidpp->hid_dev->dev, &battery->desc, &cfg); if (IS_ERR(battery->ps)) return PTR_ERR(battery->ps); power_supply_powers(battery->ps, &hidpp->hid_dev->dev); return ret; } /* Get name + serial for USB and Bluetooth HID++ devices */ static void hidpp_non_unifying_init(struct hidpp_device *hidpp) { struct hid_device *hdev = hidpp->hid_dev; char *name; /* Bluetooth devices already have their serialnr set */ if (hid_is_usb(hdev)) hidpp_serial_init(hidpp); name = hidpp_get_device_name(hidpp); if (name) { dbg_hid("HID++: Got name: %s\n", name); snprintf(hdev->name, sizeof(hdev->name), "%s", name); kfree(name); } } static int hidpp_input_open(struct input_dev *dev) { struct hid_device *hid = input_get_drvdata(dev); return hid_hw_open(hid); } static void hidpp_input_close(struct input_dev *dev) { struct hid_device *hid = input_get_drvdata(dev); hid_hw_close(hid); } static struct input_dev *hidpp_allocate_input(struct hid_device *hdev) { struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev); struct hidpp_device *hidpp = hid_get_drvdata(hdev); if (!input_dev) return NULL; input_set_drvdata(input_dev, hdev); input_dev->open = hidpp_input_open; input_dev->close = hidpp_input_close; input_dev->name = hidpp->name; input_dev->phys = hdev->phys; input_dev->uniq = hdev->uniq; input_dev->id.bustype = hdev->bus; input_dev->id.vendor = hdev->vendor; input_dev->id.product = hdev->product; input_dev->id.version = hdev->version; input_dev->dev.parent = &hdev->dev; return input_dev; } static void hidpp_connect_event(struct work_struct *work) { struct hidpp_device *hidpp = container_of(work, struct hidpp_device, work); struct hid_device *hdev = hidpp->hid_dev; struct input_dev *input; char *name, *devm_name; int ret; /* Get device version to check if it is connected */ ret = hidpp_root_get_protocol_version(hidpp); if (ret) { hid_dbg(hidpp->hid_dev, "Disconnected\n"); if (hidpp->battery.ps) { hidpp->battery.online = false; hidpp->battery.status = POWER_SUPPLY_STATUS_UNKNOWN; hidpp->battery.level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; power_supply_changed(hidpp->battery.ps); } return; } if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { ret = wtp_connect(hdev); if (ret) return; } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) { ret = m560_send_config_command(hdev); if (ret) return; } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) { ret = k400_connect(hdev); if (ret) return; } if (hidpp->quirks & HIDPP_QUIRK_HIDPP_WHEELS) { ret = hidpp10_wheel_connect(hidpp); if (ret) return; } if (hidpp->quirks & HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS) { ret = hidpp10_extra_mouse_buttons_connect(hidpp); if (ret) return; } if (hidpp->quirks & HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS) { ret = hidpp10_consumer_keys_connect(hidpp); if (ret) return; } if (hidpp->protocol_major >= 2) { u8 feature_index; if (!hidpp_get_wireless_feature_index(hidpp, &feature_index)) hidpp->wireless_feature_index = feature_index; } if (hidpp->name == hdev->name && hidpp->protocol_major >= 2) { name = hidpp_get_device_name(hidpp); if (name) { devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name); kfree(name); if (!devm_name) return; hidpp->name = devm_name; } } hidpp_initialize_battery(hidpp); if (!hid_is_usb(hidpp->hid_dev)) hidpp_initialize_hires_scroll(hidpp); /* forward current battery state */ if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP10_BATTERY) { hidpp10_enable_battery_reporting(hidpp); if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_MILEAGE) hidpp10_query_battery_mileage(hidpp); else hidpp10_query_battery_status(hidpp); } else if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_BATTERY) { if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_VOLTAGE) hidpp20_query_battery_voltage_info(hidpp); else if (hidpp->capabilities & HIDPP_CAPABILITY_UNIFIED_BATTERY) hidpp20_query_battery_info_1004(hidpp); else if (hidpp->capabilities & HIDPP_CAPABILITY_ADC_MEASUREMENT) hidpp20_query_adc_measurement_info_1f20(hidpp); else hidpp20_query_battery_info_1000(hidpp); } if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); if (hidpp->capabilities & HIDPP_CAPABILITY_HI_RES_SCROLL) hi_res_scroll_enable(hidpp); if (!(hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) || hidpp->delayed_input) /* if the input nodes are already created, we can stop now */ return; input = hidpp_allocate_input(hdev); if (!input) { hid_err(hdev, "cannot allocate new input device: %d\n", ret); return; } hidpp_populate_input(hidpp, input); ret = input_register_device(input); if (ret) { input_free_device(input); return; } hidpp->delayed_input = input; } static DEVICE_ATTR(builtin_power_supply, 0000, NULL, NULL); static struct attribute *sysfs_attrs[] = { &dev_attr_builtin_power_supply.attr, NULL }; static const struct attribute_group ps_attribute_group = { .attrs = sysfs_attrs }; static int hidpp_get_report_length(struct hid_device *hdev, int id) { struct hid_report_enum *re; struct hid_report *report; re = &(hdev->report_enum[HID_OUTPUT_REPORT]); report = re->report_id_hash[id]; if (!report) return 0; return report->field[0]->report_count + 1; } static u8 hidpp_validate_device(struct hid_device *hdev) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); int id, report_length; u8 supported_reports = 0; id = REPORT_ID_HIDPP_SHORT; report_length = hidpp_get_report_length(hdev, id); if (report_length) { if (report_length < HIDPP_REPORT_SHORT_LENGTH) goto bad_device; supported_reports |= HIDPP_REPORT_SHORT_SUPPORTED; } id = REPORT_ID_HIDPP_LONG; report_length = hidpp_get_report_length(hdev, id); if (report_length) { if (report_length < HIDPP_REPORT_LONG_LENGTH) goto bad_device; supported_reports |= HIDPP_REPORT_LONG_SUPPORTED; } id = REPORT_ID_HIDPP_VERY_LONG; report_length = hidpp_get_report_length(hdev, id); if (report_length) { if (report_length < HIDPP_REPORT_LONG_LENGTH || report_length > HIDPP_REPORT_VERY_LONG_MAX_LENGTH) goto bad_device; supported_reports |= HIDPP_REPORT_VERY_LONG_SUPPORTED; hidpp->very_long_report_length = report_length; } return supported_reports; bad_device: hid_warn(hdev, "not enough values in hidpp report %d\n", id); return false; } static bool hidpp_application_equals(struct hid_device *hdev, unsigned int application) { struct list_head *report_list; struct hid_report *report; report_list = &hdev->report_enum[HID_INPUT_REPORT].report_list; report = list_first_entry_or_null(report_list, struct hid_report, list); return report && report->application == application; } static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct hidpp_device *hidpp; int ret; unsigned int connect_mask = HID_CONNECT_DEFAULT; /* report_fixup needs drvdata to be set before we call hid_parse */ hidpp = devm_kzalloc(&hdev->dev, sizeof(*hidpp), GFP_KERNEL); if (!hidpp) return -ENOMEM; hidpp->hid_dev = hdev; hidpp->name = hdev->name; hidpp->quirks = id->driver_data; hid_set_drvdata(hdev, hidpp); ret = hid_parse(hdev); if (ret) { hid_err(hdev, "%s:parse failed\n", __func__); return ret; } /* * Make sure the device is HID++ capable, otherwise treat as generic HID */ hidpp->supported_reports = hidpp_validate_device(hdev); if (!hidpp->supported_reports) { hid_set_drvdata(hdev, NULL); devm_kfree(&hdev->dev, hidpp); return hid_hw_start(hdev, HID_CONNECT_DEFAULT); } if (id->group == HID_GROUP_LOGITECH_27MHZ_DEVICE && hidpp_application_equals(hdev, HID_GD_MOUSE)) hidpp->quirks |= HIDPP_QUIRK_HIDPP_WHEELS | HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS; if (id->group == HID_GROUP_LOGITECH_27MHZ_DEVICE && hidpp_application_equals(hdev, HID_GD_KEYBOARD)) hidpp->quirks |= HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS; if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { ret = wtp_allocate(hdev, id); if (ret) return ret; } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) { ret = k400_allocate(hdev); if (ret) return ret; } INIT_WORK(&hidpp->work, hidpp_connect_event); mutex_init(&hidpp->send_mutex); init_waitqueue_head(&hidpp->wait); /* indicates we are handling the battery properties in the kernel */ ret = sysfs_create_group(&hdev->dev.kobj, &ps_attribute_group); if (ret) hid_warn(hdev, "Cannot allocate sysfs group for %s\n", hdev->name); /* * First call hid_hw_start(hdev, 0) to allow IO without connecting any * hid subdrivers (hid-input, hidraw). This allows retrieving the dev's * name and serial number and store these in hdev->name and hdev->uniq, * before the hid-input and hidraw drivers expose these to userspace. */ ret = hid_hw_start(hdev, 0); if (ret) { hid_err(hdev, "hw start failed\n"); goto hid_hw_start_fail; } ret = hid_hw_open(hdev); if (ret < 0) { dev_err(&hdev->dev, "%s:hid_hw_open returned error:%d\n", __func__, ret); goto hid_hw_open_fail; } /* Allow incoming packets */ hid_device_io_start(hdev); /* Get name + serial, store in hdev->name + hdev->uniq */ if (id->group == HID_GROUP_LOGITECH_DJ_DEVICE) hidpp_unifying_init(hidpp); else hidpp_non_unifying_init(hidpp); if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) connect_mask &= ~HID_CONNECT_HIDINPUT; /* Now export the actual inputs and hidraw nodes to the world */ hid_device_io_stop(hdev); ret = hid_connect(hdev, connect_mask); if (ret) { hid_err(hdev, "%s:hid_connect returned error %d\n", __func__, ret); goto hid_hw_init_fail; } /* Check for connected devices now that incoming packets will not be disabled again */ hid_device_io_start(hdev); schedule_work(&hidpp->work); flush_work(&hidpp->work); if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) { struct hidpp_ff_private_data data; ret = g920_get_config(hidpp, &data); if (!ret) ret = hidpp_ff_init(hidpp, &data); if (ret) hid_warn(hidpp->hid_dev, "Unable to initialize force feedback support, errno %d\n", ret); } /* * This relies on logi_dj_ll_close() being a no-op so that DJ connection * events will still be received. */ hid_hw_close(hdev); return ret; hid_hw_init_fail: hid_hw_close(hdev); hid_hw_open_fail: hid_hw_stop(hdev); hid_hw_start_fail: sysfs_remove_group(&hdev->dev.kobj, &ps_attribute_group); cancel_work_sync(&hidpp->work); mutex_destroy(&hidpp->send_mutex); return ret; } static void hidpp_remove(struct hid_device *hdev) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); if (!hidpp) return hid_hw_stop(hdev); sysfs_remove_group(&hdev->dev.kobj, &ps_attribute_group); hid_hw_stop(hdev); cancel_work_sync(&hidpp->work); mutex_destroy(&hidpp->send_mutex); } #define LDJ_DEVICE(product) \ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, \ USB_VENDOR_ID_LOGITECH, (product)) #define L27MHZ_DEVICE(product) \ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_27MHZ_DEVICE, \ USB_VENDOR_ID_LOGITECH, (product)) static const struct hid_device_id hidpp_devices[] = { { /* wireless touchpad */ LDJ_DEVICE(0x4011), .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS }, { /* wireless touchpad T650 */ LDJ_DEVICE(0x4101), .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT }, { /* wireless touchpad T651 */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_T651), .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT }, { /* Mouse Logitech Anywhere MX */ LDJ_DEVICE(0x1017), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_1P0 }, { /* Mouse logitech M560 */ LDJ_DEVICE(0x402d), .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 }, { /* Mouse Logitech M705 (firmware RQM17) */ LDJ_DEVICE(0x101b), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_1P0 }, { /* Mouse Logitech Performance MX */ LDJ_DEVICE(0x101a), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_1P0 }, { /* Keyboard logitech K400 */ LDJ_DEVICE(0x4024), .driver_data = HIDPP_QUIRK_CLASS_K400 }, { /* Solar Keyboard Logitech K750 */ LDJ_DEVICE(0x4002), .driver_data = HIDPP_QUIRK_CLASS_K750 }, { /* Keyboard MX5000 (Bluetooth-receiver in HID proxy mode) */ LDJ_DEVICE(0xb305), .driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS }, { /* Dinovo Edge (Bluetooth-receiver in HID proxy mode) */ LDJ_DEVICE(0xb309), .driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS }, { /* Keyboard MX5500 (Bluetooth-receiver in HID proxy mode) */ LDJ_DEVICE(0xb30b), .driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS }, { LDJ_DEVICE(HID_ANY_ID) }, { /* Keyboard LX501 (Y-RR53) */ L27MHZ_DEVICE(0x0049), .driver_data = HIDPP_QUIRK_KBD_ZOOM_WHEEL }, { /* Keyboard MX3000 (Y-RAM74) */ L27MHZ_DEVICE(0x0057), .driver_data = HIDPP_QUIRK_KBD_SCROLL_WHEEL }, { /* Keyboard MX3200 (Y-RAV80) */ L27MHZ_DEVICE(0x005c), .driver_data = HIDPP_QUIRK_KBD_ZOOM_WHEEL }, { /* S510 Media Remote */ L27MHZ_DEVICE(0x00fe), .driver_data = HIDPP_QUIRK_KBD_SCROLL_WHEEL }, { L27MHZ_DEVICE(HID_ANY_ID) }, { /* Logitech G403 Wireless Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC082) }, { /* Logitech G502 Lightspeed Wireless Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC08D) }, { /* Logitech G703 Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC087) }, { /* Logitech G703 Hero Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC090) }, { /* Logitech G900 Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC081) }, { /* Logitech G903 Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC086) }, { /* Logitech G Pro Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC088) }, { /* MX Vertical over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC08A) }, { /* Logitech G703 Hero Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC090) }, { /* Logitech G903 Hero Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC091) }, { /* Logitech G915 TKL Keyboard over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC343) }, { /* Logitech G920 Wheel over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL), .driver_data = HIDPP_QUIRK_CLASS_G920 | HIDPP_QUIRK_FORCE_OUTPUT_REPORTS}, { /* Logitech G923 Wheel (Xbox version) over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G923_XBOX_WHEEL), .driver_data = HIDPP_QUIRK_CLASS_G920 | HIDPP_QUIRK_FORCE_OUTPUT_REPORTS }, { /* Logitech G Pro X Superlight Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC094) }, { /* Logitech G Pro X Superlight 2 Gaming Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC09b) }, { /* Logitech G PRO 2 LIGHTSPEED Wireless Mouse over USB */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xc09a) }, { /* G935 Gaming Headset */ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0x0a87), .driver_data = HIDPP_QUIRK_WIRELESS_STATUS }, { /* MX5000 keyboard over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb305), .driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS }, { /* Dinovo Edge keyboard over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb309), .driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS }, { /* MX5500 keyboard over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb30b), .driver_data = HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS }, { /* Logitech G915 TKL keyboard over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb35f) }, { /* M-RCQ142 V470 Cordless Laser Mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb008) }, { /* MX Master mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb012) }, { /* M720 Triathlon mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb015) }, { /* MX Master 2S mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb019) }, { /* MX Ergo trackball over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb01d) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb01e) }, { /* MX Vertical mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb020) }, { /* Signature M650 over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb02a) }, { /* MX Master 3 mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb023) }, { /* MX Anywhere 3 mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb025) }, { /* MX Master 3S mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb034) }, { /* MX Anywhere 3SB mouse over Bluetooth */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 0xb038) }, {} }; MODULE_DEVICE_TABLE(hid, hidpp_devices); static const struct hid_usage_id hidpp_usages[] = { { HID_GD_WHEEL, EV_REL, REL_WHEEL_HI_RES }, { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} }; static struct hid_driver hidpp_driver = { .name = "logitech-hidpp-device", .id_table = hidpp_devices, .report_fixup = hidpp_report_fixup, .probe = hidpp_probe, .remove = hidpp_remove, .raw_event = hidpp_raw_event, .usage_table = hidpp_usages, .event = hidpp_event, .input_configured = hidpp_input_configured, .input_mapping = hidpp_input_mapping, .input_mapped = hidpp_input_mapped, }; module_hid_driver(hidpp_driver); |
| 7 7 7 7 8 1 7 7 8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 | // SPDX-License-Identifier: GPL-2.0 /* Driver for ETAS GmbH ES58X USB CAN(-FD) Bus Interfaces. * * File es58x_devlink.c: report the product information using devlink. * * Copyright (c) 2022 Vincent Mailhol <mailhol.vincent@wanadoo.fr> */ #include <linux/ctype.h> #include <linux/device.h> #include <linux/usb.h> #include <net/devlink.h> #include "es58x_core.h" /* USB descriptor index containing the product information string. */ #define ES58X_PROD_INFO_IDX 6 /** * es58x_parse_sw_version() - Extract boot loader or firmware version. * @es58x_dev: ES58X device. * @prod_info: USB custom string returned by the device. * @prefix: Select which information should be parsed. Set it to "FW" * to parse the firmware version or to "BL" to parse the * bootloader version. * * The @prod_info string contains the firmware and the bootloader * version number all prefixed by a magic string and concatenated with * other numbers. Depending on the device, the firmware (bootloader) * format is either "FW_Vxx.xx.xx" ("BL_Vxx.xx.xx") or "FW:xx.xx.xx" * ("BL:xx.xx.xx") where 'x' represents a digit. @prod_info must * contains the common part of those prefixes: "FW" or "BL". * * Parse @prod_info and store the version number in * &es58x_dev.firmware_version or &es58x_dev.bootloader_version * according to @prefix value. * * Return: zero on success, -EINVAL if @prefix contains an invalid * value and -EBADMSG if @prod_info could not be parsed. */ static int es58x_parse_sw_version(struct es58x_device *es58x_dev, const char *prod_info, const char *prefix) { struct es58x_sw_version *version; int major, minor, revision; if (!strcmp(prefix, "FW")) version = &es58x_dev->firmware_version; else if (!strcmp(prefix, "BL")) version = &es58x_dev->bootloader_version; else return -EINVAL; /* Go to prefix */ prod_info = strstr(prod_info, prefix); if (!prod_info) return -EBADMSG; /* Go to beginning of the version number */ while (!isdigit(*prod_info)) { prod_info++; if (!*prod_info) return -EBADMSG; } if (sscanf(prod_info, "%2u.%2u.%2u", &major, &minor, &revision) != 3) return -EBADMSG; version->major = major; version->minor = minor; version->revision = revision; return 0; } /** * es58x_parse_hw_rev() - Extract hardware revision number. * @es58x_dev: ES58X device. * @prod_info: USB custom string returned by the device. * * @prod_info contains the hardware revision prefixed by a magic * string and conquenated together with other numbers. Depending on * the device, the hardware revision format is either * "HW_VER:axxx/xxx" or "HR:axxx/xxx" where 'a' represents a letter * and 'x' a digit. * * Parse @prod_info and store the hardware revision number in * &es58x_dev.hardware_revision. * * Return: zero on success, -EBADMSG if @prod_info could not be * parsed. */ static int es58x_parse_hw_rev(struct es58x_device *es58x_dev, const char *prod_info) { char letter; int major, minor; /* The only occurrence of 'H' is in the hardware revision prefix. */ prod_info = strchr(prod_info, 'H'); if (!prod_info) return -EBADMSG; /* Go to beginning of the hardware revision */ prod_info = strchr(prod_info, ':'); if (!prod_info) return -EBADMSG; prod_info++; if (sscanf(prod_info, "%c%3u/%3u", &letter, &major, &minor) != 3) return -EBADMSG; es58x_dev->hardware_revision.letter = letter; es58x_dev->hardware_revision.major = major; es58x_dev->hardware_revision.minor = minor; return 0; } /** * es58x_parse_product_info() - Parse the ES58x product information * string. * @es58x_dev: ES58X device. * * Retrieve the product information string and parse it to extract the * firmware version, the bootloader version and the hardware * revision. * * If the function fails, set the version or revision to an invalid * value and emit an informal message. Continue probing because the * product information is not critical for the driver to operate. */ void es58x_parse_product_info(struct es58x_device *es58x_dev) { static const struct es58x_sw_version sw_version_not_set = { .major = -1, .minor = -1, .revision = -1, }; static const struct es58x_hw_revision hw_revision_not_set = { .letter = '\0', .major = -1, .minor = -1, }; char *prod_info; es58x_dev->firmware_version = sw_version_not_set; es58x_dev->bootloader_version = sw_version_not_set; es58x_dev->hardware_revision = hw_revision_not_set; prod_info = usb_cache_string(es58x_dev->udev, ES58X_PROD_INFO_IDX); if (!prod_info) { dev_warn(es58x_dev->dev, "could not retrieve the product info string\n"); return; } if (es58x_parse_sw_version(es58x_dev, prod_info, "FW") || es58x_parse_sw_version(es58x_dev, prod_info, "BL") || es58x_parse_hw_rev(es58x_dev, prod_info)) dev_info(es58x_dev->dev, "could not parse product info: '%s'\n", prod_info); kfree(prod_info); } /** * es58x_sw_version_is_valid() - Check if the version is a valid number. * @sw_ver: Version number of either the firmware or the bootloader. * * If any of the software version sub-numbers do not fit on two * digits, the version is invalid, most probably because the product * string could not be parsed. * * Return: @true if the software version is valid, @false otherwise. */ static inline bool es58x_sw_version_is_valid(struct es58x_sw_version *sw_ver) { return sw_ver->major < 100 && sw_ver->minor < 100 && sw_ver->revision < 100; } /** * es58x_hw_revision_is_valid() - Check if the revision is a valid number. * @hw_rev: Revision number of the hardware. * * If &es58x_hw_revision.letter is not a alphanumeric character or if * any of the hardware revision sub-numbers do not fit on three * digits, the revision is invalid, most probably because the product * string could not be parsed. * * Return: @true if the hardware revision is valid, @false otherwise. */ static inline bool es58x_hw_revision_is_valid(struct es58x_hw_revision *hw_rev) { return isalnum(hw_rev->letter) && hw_rev->major < 1000 && hw_rev->minor < 1000; } /** * es58x_devlink_info_get() - Report the product information. * @devlink: Devlink. * @req: skb wrapper where to put requested information. * @extack: Unused. * * Report the firmware version, the bootloader version, the hardware * revision and the serial number through netlink. * * Return: zero on success, errno when any error occurs. */ static int es58x_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req, struct netlink_ext_ack *extack) { struct es58x_device *es58x_dev = devlink_priv(devlink); struct es58x_sw_version *fw_ver = &es58x_dev->firmware_version; struct es58x_sw_version *bl_ver = &es58x_dev->bootloader_version; struct es58x_hw_revision *hw_rev = &es58x_dev->hardware_revision; char buf[MAX(sizeof("xx.xx.xx"), sizeof("axxx/xxx"))]; int ret = 0; if (es58x_sw_version_is_valid(fw_ver)) { snprintf(buf, sizeof(buf), "%02u.%02u.%02u", fw_ver->major, fw_ver->minor, fw_ver->revision); ret = devlink_info_version_running_put(req, DEVLINK_INFO_VERSION_GENERIC_FW, buf); if (ret) return ret; } if (es58x_sw_version_is_valid(bl_ver)) { snprintf(buf, sizeof(buf), "%02u.%02u.%02u", bl_ver->major, bl_ver->minor, bl_ver->revision); ret = devlink_info_version_running_put(req, DEVLINK_INFO_VERSION_GENERIC_FW_BOOTLOADER, buf); if (ret) return ret; } if (es58x_hw_revision_is_valid(hw_rev)) { snprintf(buf, sizeof(buf), "%c%03u/%03u", hw_rev->letter, hw_rev->major, hw_rev->minor); ret = devlink_info_version_fixed_put(req, DEVLINK_INFO_VERSION_GENERIC_BOARD_REV, buf); if (ret) return ret; } if (es58x_dev->udev->serial) ret = devlink_info_serial_number_put(req, es58x_dev->udev->serial); return ret; } const struct devlink_ops es58x_dl_ops = { .info_get = es58x_devlink_info_get, }; |
| 3224 1073 366 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* Integer base 2 logarithm calculation * * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #ifndef _LINUX_LOG2_H #define _LINUX_LOG2_H #include <linux/types.h> #include <linux/bitops.h> /* * non-constant log of base 2 calculators * - the arch may override these in asm/bitops.h if they can be implemented * more efficiently than using fls() and fls64() * - the arch is not required to handle n==0 if implementing the fallback */ #ifndef CONFIG_ARCH_HAS_ILOG2_U32 static __always_inline __attribute__((const)) int __ilog2_u32(u32 n) { return fls(n) - 1; } #endif #ifndef CONFIG_ARCH_HAS_ILOG2_U64 static __always_inline __attribute__((const)) int __ilog2_u64(u64 n) { return fls64(n) - 1; } #endif /** * is_power_of_2() - check if a value is a power of two * @n: the value to check * * Determine whether some value is a power of two, where zero is * *not* considered a power of two. * Return: true if @n is a power of 2, otherwise false. */ static __always_inline __attribute__((const)) bool is_power_of_2(unsigned long n) { return (n != 0 && ((n & (n - 1)) == 0)); } /** * __roundup_pow_of_two() - round up to nearest power of two * @n: value to round up */ static inline __attribute__((const)) unsigned long __roundup_pow_of_two(unsigned long n) { return 1UL << fls_long(n - 1); } /** * __rounddown_pow_of_two() - round down to nearest power of two * @n: value to round down */ static inline __attribute__((const)) unsigned long __rounddown_pow_of_two(unsigned long n) { return 1UL << (fls_long(n) - 1); } /** * const_ilog2 - log base 2 of 32-bit or a 64-bit constant unsigned value * @n: parameter * * Use this where sparse expects a true constant expression, e.g. for array * indices. */ #define const_ilog2(n) \ ( \ __builtin_constant_p(n) ? ( \ (n) < 2 ? 0 : \ (n) & (1ULL << 63) ? 63 : \ (n) & (1ULL << 62) ? 62 : \ (n) & (1ULL << 61) ? 61 : \ (n) & (1ULL << 60) ? 60 : \ (n) & (1ULL << 59) ? 59 : \ (n) & (1ULL << 58) ? 58 : \ (n) & (1ULL << 57) ? 57 : \ (n) & (1ULL << 56) ? 56 : \ (n) & (1ULL << 55) ? 55 : \ (n) & (1ULL << 54) ? 54 : \ (n) & (1ULL << 53) ? 53 : \ (n) & (1ULL << 52) ? 52 : \ (n) & (1ULL << 51) ? 51 : \ (n) & (1ULL << 50) ? 50 : \ (n) & (1ULL << 49) ? 49 : \ (n) & (1ULL << 48) ? 48 : \ (n) & (1ULL << 47) ? 47 : \ (n) & (1ULL << 46) ? 46 : \ (n) & (1ULL << 45) ? 45 : \ (n) & (1ULL << 44) ? 44 : \ (n) & (1ULL << 43) ? 43 : \ (n) & (1ULL << 42) ? 42 : \ (n) & (1ULL << 41) ? 41 : \ (n) & (1ULL << 40) ? 40 : \ (n) & (1ULL << 39) ? 39 : \ (n) & (1ULL << 38) ? 38 : \ (n) & (1ULL << 37) ? 37 : \ (n) & (1ULL << 36) ? 36 : \ (n) & (1ULL << 35) ? 35 : \ (n) & (1ULL << 34) ? 34 : \ (n) & (1ULL << 33) ? 33 : \ (n) & (1ULL << 32) ? 32 : \ (n) & (1ULL << 31) ? 31 : \ (n) & (1ULL << 30) ? 30 : \ (n) & (1ULL << 29) ? 29 : \ (n) & (1ULL << 28) ? 28 : \ (n) & (1ULL << 27) ? 27 : \ (n) & (1ULL << 26) ? 26 : \ (n) & (1ULL << 25) ? 25 : \ (n) & (1ULL << 24) ? 24 : \ (n) & (1ULL << 23) ? 23 : \ (n) & (1ULL << 22) ? 22 : \ (n) & (1ULL << 21) ? 21 : \ (n) & (1ULL << 20) ? 20 : \ (n) & (1ULL << 19) ? 19 : \ (n) & (1ULL << 18) ? 18 : \ (n) & (1ULL << 17) ? 17 : \ (n) & (1ULL << 16) ? 16 : \ (n) & (1ULL << 15) ? 15 : \ (n) & (1ULL << 14) ? 14 : \ (n) & (1ULL << 13) ? 13 : \ (n) & (1ULL << 12) ? 12 : \ (n) & (1ULL << 11) ? 11 : \ (n) & (1ULL << 10) ? 10 : \ (n) & (1ULL << 9) ? 9 : \ (n) & (1ULL << 8) ? 8 : \ (n) & (1ULL << 7) ? 7 : \ (n) & (1ULL << 6) ? 6 : \ (n) & (1ULL << 5) ? 5 : \ (n) & (1ULL << 4) ? 4 : \ (n) & (1ULL << 3) ? 3 : \ (n) & (1ULL << 2) ? 2 : \ 1) : \ -1) /** * ilog2 - log base 2 of 32-bit or a 64-bit unsigned value * @n: parameter * * constant-capable log of base 2 calculation * - this can be used to initialise global variables from constant data, hence * the massive ternary operator construction * * selects the appropriately-sized optimised version depending on sizeof(n) */ #define ilog2(n) \ ( \ __builtin_constant_p(n) ? \ ((n) < 2 ? 0 : \ 63 - __builtin_clzll(n)) : \ (sizeof(n) <= 4) ? \ __ilog2_u32(n) : \ __ilog2_u64(n) \ ) /** * roundup_pow_of_two - round the given value up to nearest power of two * @n: parameter * * round the given value up to the nearest power of two * - the result is undefined when n == 0 * - this can be used to initialise global variables from constant data */ #define roundup_pow_of_two(n) \ ( \ __builtin_constant_p(n) ? ( \ ((n) == 1) ? 1 : \ (1UL << (ilog2((n) - 1) + 1)) \ ) : \ __roundup_pow_of_two(n) \ ) /** * rounddown_pow_of_two - round the given value down to nearest power of two * @n: parameter * * round the given value down to the nearest power of two * - the result is undefined when n == 0 * - this can be used to initialise global variables from constant data */ #define rounddown_pow_of_two(n) \ ( \ __builtin_constant_p(n) ? ( \ (1UL << ilog2(n))) : \ __rounddown_pow_of_two(n) \ ) static inline __attribute_const__ int __order_base_2(unsigned long n) { return n > 1 ? ilog2(n - 1) + 1 : 0; } /** * order_base_2 - calculate the (rounded up) base 2 order of the argument * @n: parameter * * The first few values calculated by this routine: * ob2(0) = 0 * ob2(1) = 0 * ob2(2) = 1 * ob2(3) = 2 * ob2(4) = 2 * ob2(5) = 3 * ... and so on. */ #define order_base_2(n) \ ( \ __builtin_constant_p(n) ? ( \ ((n) == 0 || (n) == 1) ? 0 : \ ilog2((n) - 1) + 1) : \ __order_base_2(n) \ ) static inline __attribute__((const)) int __bits_per(unsigned long n) { if (n < 2) return 1; if (is_power_of_2(n)) return order_base_2(n) + 1; return order_base_2(n); } /** * bits_per - calculate the number of bits required for the argument * @n: parameter * * This is constant-capable and can be used for compile time * initializations, e.g bitfields. * * The first few values calculated by this routine: * bf(0) = 1 * bf(1) = 1 * bf(2) = 2 * bf(3) = 2 * bf(4) = 3 * ... and so on. */ #define bits_per(n) \ ( \ __builtin_constant_p(n) ? ( \ ((n) == 0 || (n) == 1) \ ? 1 : ilog2(n) + 1 \ ) : \ __bits_per(n) \ ) /** * max_pow_of_two_factor - return highest power-of-2 factor * @n: parameter * * find highest power-of-2 which is evenly divisible into n. * 0 is returned for n == 0 or 1. */ static inline __attribute__((const)) unsigned int max_pow_of_two_factor(unsigned int n) { return n & -n; } #endif /* _LINUX_LOG2_H */ |
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2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 | // SPDX-License-Identifier: GPL-2.0+ /* * drivers/usb/class/usbtmc.c - USB Test & Measurement class driver * * Copyright (C) 2007 Stefan Kopp, Gechingen, Germany * Copyright (C) 2008 Novell, Inc. * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de> * Copyright (C) 2018 IVI Foundation, Inc. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/kernel.h> #include <linux/fs.h> #include <linux/uaccess.h> #include <linux/kref.h> #include <linux/slab.h> #include <linux/poll.h> #include <linux/mutex.h> #include <linux/usb.h> #include <linux/compat.h> #include <linux/usb/tmc.h> /* Increment API VERSION when changing tmc.h with new flags or ioctls * or when changing a significant behavior of the driver. */ #define USBTMC_API_VERSION (3) #define USBTMC_HEADER_SIZE 12 #define USBTMC_MINOR_BASE 176 /* Minimum USB timeout (in milliseconds) */ #define USBTMC_MIN_TIMEOUT 100 /* Default USB timeout (in milliseconds) */ #define USBTMC_TIMEOUT 5000 /* Max number of urbs used in write transfers */ #define MAX_URBS_IN_FLIGHT 16 /* I/O buffer size used in generic read/write functions */ #define USBTMC_BUFSIZE (4096) /* * Maximum number of read cycles to empty bulk in endpoint during CLEAR and * ABORT_BULK_IN requests. Ends the loop if (for whatever reason) a short * packet is never read. */ #define USBTMC_MAX_READS_TO_CLEAR_BULK_IN 100 static const struct usb_device_id usbtmc_devices[] = { { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 0), }, { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 1), }, { 0, } /* terminating entry */ }; MODULE_DEVICE_TABLE(usb, usbtmc_devices); /* * This structure is the capabilities for the device * See section 4.2.1.8 of the USBTMC specification, * and section 4.2.2 of the USBTMC usb488 subclass * specification for details. */ struct usbtmc_dev_capabilities { __u8 interface_capabilities; __u8 device_capabilities; __u8 usb488_interface_capabilities; __u8 usb488_device_capabilities; }; /* This structure holds private data for each USBTMC device. One copy is * allocated for each USBTMC device in the driver's probe function. */ struct usbtmc_device_data { const struct usb_device_id *id; struct usb_device *usb_dev; struct usb_interface *intf; struct list_head file_list; unsigned int bulk_in; unsigned int bulk_out; u8 bTag; u8 bTag_last_write; /* needed for abort */ u8 bTag_last_read; /* needed for abort */ /* packet size of IN bulk */ u16 wMaxPacketSize; /* data for interrupt in endpoint handling */ u8 bNotify1; u8 bNotify2; u16 ifnum; u8 iin_bTag; u8 *iin_buffer; atomic_t iin_data_valid; unsigned int iin_ep; int iin_ep_present; int iin_interval; struct urb *iin_urb; u16 iin_wMaxPacketSize; /* coalesced usb488_caps from usbtmc_dev_capabilities */ __u8 usb488_caps; bool zombie; /* fd of disconnected device */ struct usbtmc_dev_capabilities capabilities; struct kref kref; struct mutex io_mutex; /* only one i/o function running at a time */ wait_queue_head_t waitq; struct fasync_struct *fasync; spinlock_t dev_lock; /* lock for file_list */ }; #define to_usbtmc_data(d) container_of(d, struct usbtmc_device_data, kref) /* * This structure holds private data for each USBTMC file handle. */ struct usbtmc_file_data { struct usbtmc_device_data *data; struct list_head file_elem; u32 timeout; u8 srq_byte; atomic_t srq_asserted; atomic_t closing; u8 bmTransferAttributes; /* member of DEV_DEP_MSG_IN */ u8 eom_val; u8 term_char; bool term_char_enabled; bool auto_abort; spinlock_t err_lock; /* lock for errors */ struct usb_anchor submitted; /* data for generic_write */ struct semaphore limit_write_sem; u32 out_transfer_size; int out_status; /* data for generic_read */ u32 in_transfer_size; int in_status; int in_urbs_used; struct usb_anchor in_anchor; wait_queue_head_t wait_bulk_in; }; /* Forward declarations */ static struct usb_driver usbtmc_driver; static void usbtmc_draw_down(struct usbtmc_file_data *file_data); static void usbtmc_delete(struct kref *kref) { struct usbtmc_device_data *data = to_usbtmc_data(kref); usb_put_dev(data->usb_dev); kfree(data); } static int usbtmc_open(struct inode *inode, struct file *filp) { struct usb_interface *intf; struct usbtmc_device_data *data; struct usbtmc_file_data *file_data; intf = usb_find_interface(&usbtmc_driver, iminor(inode)); if (!intf) { pr_err("can not find device for minor %d", iminor(inode)); return -ENODEV; } file_data = kzalloc(sizeof(*file_data), GFP_KERNEL); if (!file_data) return -ENOMEM; spin_lock_init(&file_data->err_lock); sema_init(&file_data->limit_write_sem, MAX_URBS_IN_FLIGHT); init_usb_anchor(&file_data->submitted); init_usb_anchor(&file_data->in_anchor); init_waitqueue_head(&file_data->wait_bulk_in); data = usb_get_intfdata(intf); /* Protect reference to data from file structure until release */ kref_get(&data->kref); mutex_lock(&data->io_mutex); file_data->data = data; atomic_set(&file_data->closing, 0); file_data->timeout = USBTMC_TIMEOUT; file_data->term_char = '\n'; file_data->term_char_enabled = 0; file_data->auto_abort = 0; file_data->eom_val = 1; INIT_LIST_HEAD(&file_data->file_elem); spin_lock_irq(&data->dev_lock); list_add_tail(&file_data->file_elem, &data->file_list); spin_unlock_irq(&data->dev_lock); mutex_unlock(&data->io_mutex); /* Store pointer in file structure's private data field */ filp->private_data = file_data; return 0; } /* * usbtmc_flush - called before file handle is closed */ static int usbtmc_flush(struct file *file, fl_owner_t id) { struct usbtmc_file_data *file_data; struct usbtmc_device_data *data; file_data = file->private_data; if (file_data == NULL) return -ENODEV; atomic_set(&file_data->closing, 1); data = file_data->data; /* wait for io to stop */ mutex_lock(&data->io_mutex); usbtmc_draw_down(file_data); spin_lock_irq(&file_data->err_lock); file_data->in_status = 0; file_data->in_transfer_size = 0; file_data->in_urbs_used = 0; file_data->out_status = 0; file_data->out_transfer_size = 0; spin_unlock_irq(&file_data->err_lock); wake_up_interruptible_all(&data->waitq); mutex_unlock(&data->io_mutex); return 0; } static int usbtmc_release(struct inode *inode, struct file *file) { struct usbtmc_file_data *file_data = file->private_data; /* prevent IO _AND_ usbtmc_interrupt */ mutex_lock(&file_data->data->io_mutex); spin_lock_irq(&file_data->data->dev_lock); list_del(&file_data->file_elem); spin_unlock_irq(&file_data->data->dev_lock); mutex_unlock(&file_data->data->io_mutex); kref_put(&file_data->data->kref, usbtmc_delete); file_data->data = NULL; kfree(file_data); return 0; } static int usbtmc_ioctl_abort_bulk_in_tag(struct usbtmc_device_data *data, u8 tag) { u8 *buffer; struct device *dev; int rv; int n; int actual; dev = &data->intf->dev; buffer = kmalloc(USBTMC_BUFSIZE, GFP_KERNEL); if (!buffer) return -ENOMEM; rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_INITIATE_ABORT_BULK_IN, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, tag, data->bulk_in, buffer, 2, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } dev_dbg(dev, "INITIATE_ABORT_BULK_IN returned %x with tag %02x\n", buffer[0], buffer[1]); if (buffer[0] == USBTMC_STATUS_FAILED) { /* No transfer in progress and the Bulk-OUT FIFO is empty. */ rv = 0; goto exit; } if (buffer[0] == USBTMC_STATUS_TRANSFER_NOT_IN_PROGRESS) { /* The device returns this status if either: * - There is a transfer in progress, but the specified bTag * does not match. * - There is no transfer in progress, but the Bulk-OUT FIFO * is not empty. */ rv = -ENOMSG; goto exit; } if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "INITIATE_ABORT_BULK_IN returned %x\n", buffer[0]); rv = -EPERM; goto exit; } n = 0; usbtmc_abort_bulk_in_status: dev_dbg(dev, "Reading from bulk in EP\n"); /* Data must be present. So use low timeout 300 ms */ actual = 0; rv = usb_bulk_msg(data->usb_dev, usb_rcvbulkpipe(data->usb_dev, data->bulk_in), buffer, USBTMC_BUFSIZE, &actual, 300); print_hex_dump_debug("usbtmc ", DUMP_PREFIX_NONE, 16, 1, buffer, actual, true); n++; if (rv < 0) { dev_err(dev, "usb_bulk_msg returned %d\n", rv); if (rv != -ETIMEDOUT) goto exit; } if (actual == USBTMC_BUFSIZE) goto usbtmc_abort_bulk_in_status; if (n >= USBTMC_MAX_READS_TO_CLEAR_BULK_IN) { dev_err(dev, "Couldn't clear device buffer within %d cycles\n", USBTMC_MAX_READS_TO_CLEAR_BULK_IN); rv = -EPERM; goto exit; } rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_CHECK_ABORT_BULK_IN_STATUS, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, 0, data->bulk_in, buffer, 0x08, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } dev_dbg(dev, "CHECK_ABORT_BULK_IN returned %x\n", buffer[0]); if (buffer[0] == USBTMC_STATUS_SUCCESS) { rv = 0; goto exit; } if (buffer[0] != USBTMC_STATUS_PENDING) { dev_err(dev, "CHECK_ABORT_BULK_IN returned %x\n", buffer[0]); rv = -EPERM; goto exit; } if ((buffer[1] & 1) > 0) { /* The device has 1 or more queued packets the Host can read */ goto usbtmc_abort_bulk_in_status; } /* The Host must send CHECK_ABORT_BULK_IN_STATUS at a later time. */ rv = -EAGAIN; exit: kfree(buffer); return rv; } static int usbtmc_ioctl_abort_bulk_in(struct usbtmc_device_data *data) { return usbtmc_ioctl_abort_bulk_in_tag(data, data->bTag_last_read); } static int usbtmc_ioctl_abort_bulk_out_tag(struct usbtmc_device_data *data, u8 tag) { struct device *dev; u8 *buffer; int rv; int n; dev = &data->intf->dev; buffer = kmalloc(8, GFP_KERNEL); if (!buffer) return -ENOMEM; rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_INITIATE_ABORT_BULK_OUT, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, tag, data->bulk_out, buffer, 2, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } dev_dbg(dev, "INITIATE_ABORT_BULK_OUT returned %x\n", buffer[0]); if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "INITIATE_ABORT_BULK_OUT returned %x\n", buffer[0]); rv = -EPERM; goto exit; } n = 0; usbtmc_abort_bulk_out_check_status: /* do not stress device with subsequent requests */ msleep(50); rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_CHECK_ABORT_BULK_OUT_STATUS, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, 0, data->bulk_out, buffer, 0x08, USB_CTRL_GET_TIMEOUT); n++; if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } dev_dbg(dev, "CHECK_ABORT_BULK_OUT returned %x\n", buffer[0]); if (buffer[0] == USBTMC_STATUS_SUCCESS) goto usbtmc_abort_bulk_out_clear_halt; if ((buffer[0] == USBTMC_STATUS_PENDING) && (n < USBTMC_MAX_READS_TO_CLEAR_BULK_IN)) goto usbtmc_abort_bulk_out_check_status; rv = -EPERM; goto exit; usbtmc_abort_bulk_out_clear_halt: rv = usb_clear_halt(data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out)); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } rv = 0; exit: kfree(buffer); return rv; } static int usbtmc_ioctl_abort_bulk_out(struct usbtmc_device_data *data) { return usbtmc_ioctl_abort_bulk_out_tag(data, data->bTag_last_write); } static int usbtmc_get_stb(struct usbtmc_file_data *file_data, __u8 *stb) { struct usbtmc_device_data *data = file_data->data; struct device *dev = &data->intf->dev; u8 *buffer; u8 tag; int rv; long wait_rv; unsigned long expire; dev_dbg(dev, "Enter ioctl_read_stb iin_ep_present: %d\n", data->iin_ep_present); buffer = kmalloc(8, GFP_KERNEL); if (!buffer) return -ENOMEM; atomic_set(&data->iin_data_valid, 0); rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC488_REQUEST_READ_STATUS_BYTE, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, data->iin_bTag, data->ifnum, buffer, 0x03, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "stb usb_control_msg returned %d\n", rv); goto exit; } if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "control status returned %x\n", buffer[0]); rv = -EIO; goto exit; } if (data->iin_ep_present) { expire = msecs_to_jiffies(file_data->timeout); wait_rv = wait_event_interruptible_timeout( data->waitq, atomic_read(&data->iin_data_valid) != 0, expire); if (wait_rv < 0) { dev_dbg(dev, "wait interrupted %ld\n", wait_rv); rv = wait_rv; goto exit; } if (wait_rv == 0) { dev_dbg(dev, "wait timed out\n"); rv = -ETIMEDOUT; goto exit; } tag = data->bNotify1 & 0x7f; if (tag != data->iin_bTag) { dev_err(dev, "expected bTag %x got %x\n", data->iin_bTag, tag); } *stb = data->bNotify2; } else { *stb = buffer[2]; } dev_dbg(dev, "stb:0x%02x received %d\n", (unsigned int)*stb, rv); rv = 0; exit: /* bump interrupt bTag */ data->iin_bTag += 1; if (data->iin_bTag > 127) /* 1 is for SRQ see USBTMC-USB488 subclass spec section 4.3.1 */ data->iin_bTag = 2; kfree(buffer); return rv; } static int usbtmc488_ioctl_read_stb(struct usbtmc_file_data *file_data, void __user *arg) { int srq_asserted = 0; __u8 stb; int rv; rv = usbtmc_get_stb(file_data, &stb); if (rv < 0) return rv; srq_asserted = atomic_xchg(&file_data->srq_asserted, srq_asserted); if (srq_asserted) stb |= 0x40; /* Set RQS bit */ rv = put_user(stb, (__u8 __user *)arg); return rv; } static int usbtmc_ioctl_get_srq_stb(struct usbtmc_file_data *file_data, void __user *arg) { struct usbtmc_device_data *data = file_data->data; struct device *dev = &data->intf->dev; int srq_asserted = 0; __u8 stb = 0; int rv; spin_lock_irq(&data->dev_lock); srq_asserted = atomic_xchg(&file_data->srq_asserted, srq_asserted); if (srq_asserted) { stb = file_data->srq_byte; spin_unlock_irq(&data->dev_lock); rv = put_user(stb, (__u8 __user *)arg); } else { spin_unlock_irq(&data->dev_lock); rv = -ENOMSG; } dev_dbg(dev, "stb:0x%02x with srq received %d\n", (unsigned int)stb, rv); return rv; } static int usbtmc488_ioctl_wait_srq(struct usbtmc_file_data *file_data, __u32 __user *arg) { struct usbtmc_device_data *data = file_data->data; struct device *dev = &data->intf->dev; u32 timeout; unsigned long expire; long wait_rv; if (!data->iin_ep_present) { dev_dbg(dev, "no interrupt endpoint present\n"); return -EFAULT; } if (get_user(timeout, arg)) return -EFAULT; expire = msecs_to_jiffies(timeout); mutex_unlock(&data->io_mutex); wait_rv = wait_event_interruptible_timeout( data->waitq, atomic_read(&file_data->srq_asserted) != 0 || atomic_read(&file_data->closing), expire); mutex_lock(&data->io_mutex); /* Note! disconnect or close could be called in the meantime */ if (atomic_read(&file_data->closing) || data->zombie) return -ENODEV; if (wait_rv < 0) { dev_dbg(dev, "%s - wait interrupted %ld\n", __func__, wait_rv); return wait_rv; } if (wait_rv == 0) { dev_dbg(dev, "%s - wait timed out\n", __func__); return -ETIMEDOUT; } dev_dbg(dev, "%s - srq asserted\n", __func__); return 0; } static int usbtmc488_ioctl_simple(struct usbtmc_device_data *data, void __user *arg, unsigned int cmd) { struct device *dev = &data->intf->dev; __u8 val; u8 *buffer; u16 wValue; int rv; if (!(data->usb488_caps & USBTMC488_CAPABILITY_SIMPLE)) return -EINVAL; buffer = kmalloc(8, GFP_KERNEL); if (!buffer) return -ENOMEM; if (cmd == USBTMC488_REQUEST_REN_CONTROL) { rv = copy_from_user(&val, arg, sizeof(val)); if (rv) { rv = -EFAULT; goto exit; } wValue = val ? 1 : 0; } else { wValue = 0; } rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), cmd, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, wValue, data->ifnum, buffer, 0x01, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "simple usb_control_msg failed %d\n", rv); goto exit; } else if (rv != 1) { dev_warn(dev, "simple usb_control_msg returned %d\n", rv); rv = -EIO; goto exit; } if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "simple control status returned %x\n", buffer[0]); rv = -EIO; goto exit; } rv = 0; exit: kfree(buffer); return rv; } /* * Sends a TRIGGER Bulk-OUT command message * See the USBTMC-USB488 specification, Table 2. * * Also updates bTag_last_write. */ static int usbtmc488_ioctl_trigger(struct usbtmc_file_data *file_data) { struct usbtmc_device_data *data = file_data->data; int retval; u8 *buffer; int actual; buffer = kzalloc(USBTMC_HEADER_SIZE, GFP_KERNEL); if (!buffer) return -ENOMEM; buffer[0] = 128; buffer[1] = data->bTag; buffer[2] = ~data->bTag; retval = usb_bulk_msg(data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out), buffer, USBTMC_HEADER_SIZE, &actual, file_data->timeout); /* Store bTag (in case we need to abort) */ data->bTag_last_write = data->bTag; /* Increment bTag -- and increment again if zero */ data->bTag++; if (!data->bTag) data->bTag++; kfree(buffer); if (retval < 0) { dev_err(&data->intf->dev, "%s returned %d\n", __func__, retval); return retval; } return 0; } static struct urb *usbtmc_create_urb(void) { const size_t bufsize = USBTMC_BUFSIZE; u8 *dmabuf = NULL; struct urb *urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return NULL; dmabuf = kzalloc(bufsize, GFP_KERNEL); if (!dmabuf) { usb_free_urb(urb); return NULL; } urb->transfer_buffer = dmabuf; urb->transfer_buffer_length = bufsize; urb->transfer_flags |= URB_FREE_BUFFER; return urb; } static void usbtmc_read_bulk_cb(struct urb *urb) { struct usbtmc_file_data *file_data = urb->context; int status = urb->status; unsigned long flags; /* sync/async unlink faults aren't errors */ if (status) { if (!(/* status == -ENOENT || */ status == -ECONNRESET || status == -EREMOTEIO || /* Short packet */ status == -ESHUTDOWN)) dev_err(&file_data->data->intf->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); spin_lock_irqsave(&file_data->err_lock, flags); if (!file_data->in_status) file_data->in_status = status; spin_unlock_irqrestore(&file_data->err_lock, flags); } spin_lock_irqsave(&file_data->err_lock, flags); file_data->in_transfer_size += urb->actual_length; dev_dbg(&file_data->data->intf->dev, "%s - total size: %u current: %d status: %d\n", __func__, file_data->in_transfer_size, urb->actual_length, status); spin_unlock_irqrestore(&file_data->err_lock, flags); usb_anchor_urb(urb, &file_data->in_anchor); wake_up_interruptible(&file_data->wait_bulk_in); wake_up_interruptible(&file_data->data->waitq); } static inline bool usbtmc_do_transfer(struct usbtmc_file_data *file_data) { bool data_or_error; spin_lock_irq(&file_data->err_lock); data_or_error = !usb_anchor_empty(&file_data->in_anchor) || file_data->in_status; spin_unlock_irq(&file_data->err_lock); dev_dbg(&file_data->data->intf->dev, "%s: returns %d\n", __func__, data_or_error); return data_or_error; } static ssize_t usbtmc_generic_read(struct usbtmc_file_data *file_data, void __user *user_buffer, u32 transfer_size, u32 *transferred, u32 flags) { struct usbtmc_device_data *data = file_data->data; struct device *dev = &data->intf->dev; u32 done = 0; u32 remaining; const u32 bufsize = USBTMC_BUFSIZE; int retval = 0; u32 max_transfer_size; unsigned long expire; int bufcount = 1; int again = 0; long wait_rv; /* mutex already locked */ *transferred = done; max_transfer_size = transfer_size; if (flags & USBTMC_FLAG_IGNORE_TRAILER) { /* The device may send extra alignment bytes (up to * wMaxPacketSize – 1) to avoid sending a zero-length * packet */ remaining = transfer_size; if ((max_transfer_size % data->wMaxPacketSize) == 0) max_transfer_size += (data->wMaxPacketSize - 1); } else { /* round down to bufsize to avoid truncated data left */ if (max_transfer_size > bufsize) { max_transfer_size = roundup(max_transfer_size + 1 - bufsize, bufsize); } remaining = max_transfer_size; } spin_lock_irq(&file_data->err_lock); if (file_data->in_status) { /* return the very first error */ retval = file_data->in_status; spin_unlock_irq(&file_data->err_lock); goto error; } if (flags & USBTMC_FLAG_ASYNC) { if (usb_anchor_empty(&file_data->in_anchor)) again = 1; if (file_data->in_urbs_used == 0) { file_data->in_transfer_size = 0; file_data->in_status = 0; } } else { file_data->in_transfer_size = 0; file_data->in_status = 0; } if (max_transfer_size == 0) { bufcount = 0; } else { bufcount = roundup(max_transfer_size, bufsize) / bufsize; if (bufcount > file_data->in_urbs_used) bufcount -= file_data->in_urbs_used; else bufcount = 0; if (bufcount + file_data->in_urbs_used > MAX_URBS_IN_FLIGHT) { bufcount = MAX_URBS_IN_FLIGHT - file_data->in_urbs_used; } } spin_unlock_irq(&file_data->err_lock); dev_dbg(dev, "%s: requested=%u flags=0x%X size=%u bufs=%d used=%d\n", __func__, transfer_size, flags, max_transfer_size, bufcount, file_data->in_urbs_used); while (bufcount > 0) { u8 *dmabuf = NULL; struct urb *urb = usbtmc_create_urb(); if (!urb) { retval = -ENOMEM; goto error; } dmabuf = urb->transfer_buffer; usb_fill_bulk_urb(urb, data->usb_dev, usb_rcvbulkpipe(data->usb_dev, data->bulk_in), dmabuf, bufsize, usbtmc_read_bulk_cb, file_data); usb_anchor_urb(urb, &file_data->submitted); retval = usb_submit_urb(urb, GFP_KERNEL); /* urb is anchored. We can release our reference. */ usb_free_urb(urb); if (unlikely(retval)) { usb_unanchor_urb(urb); goto error; } file_data->in_urbs_used++; bufcount--; } if (again) { dev_dbg(dev, "%s: ret=again\n", __func__); return -EAGAIN; } if (user_buffer == NULL) return -EINVAL; expire = msecs_to_jiffies(file_data->timeout); while (max_transfer_size > 0) { u32 this_part; struct urb *urb = NULL; if (!(flags & USBTMC_FLAG_ASYNC)) { dev_dbg(dev, "%s: before wait time %lu\n", __func__, expire); wait_rv = wait_event_interruptible_timeout( file_data->wait_bulk_in, usbtmc_do_transfer(file_data), expire); dev_dbg(dev, "%s: wait returned %ld\n", __func__, wait_rv); if (wait_rv < 0) { retval = wait_rv; goto error; } if (wait_rv == 0) { retval = -ETIMEDOUT; goto error; } } urb = usb_get_from_anchor(&file_data->in_anchor); if (!urb) { if (!(flags & USBTMC_FLAG_ASYNC)) { /* synchronous case: must not happen */ retval = -EFAULT; goto error; } /* asynchronous case: ready, do not block or wait */ *transferred = done; dev_dbg(dev, "%s: (async) done=%u ret=0\n", __func__, done); return 0; } file_data->in_urbs_used--; if (max_transfer_size > urb->actual_length) max_transfer_size -= urb->actual_length; else max_transfer_size = 0; if (remaining > urb->actual_length) this_part = urb->actual_length; else this_part = remaining; print_hex_dump_debug("usbtmc ", DUMP_PREFIX_NONE, 16, 1, urb->transfer_buffer, urb->actual_length, true); if (copy_to_user(user_buffer + done, urb->transfer_buffer, this_part)) { usb_free_urb(urb); retval = -EFAULT; goto error; } remaining -= this_part; done += this_part; spin_lock_irq(&file_data->err_lock); if (urb->status) { /* return the very first error */ retval = file_data->in_status; spin_unlock_irq(&file_data->err_lock); usb_free_urb(urb); goto error; } spin_unlock_irq(&file_data->err_lock); if (urb->actual_length < bufsize) { /* short packet or ZLP received => ready */ usb_free_urb(urb); retval = 1; break; } if (!(flags & USBTMC_FLAG_ASYNC) && max_transfer_size > (bufsize * file_data->in_urbs_used)) { /* resubmit, since other buffers still not enough */ usb_anchor_urb(urb, &file_data->submitted); retval = usb_submit_urb(urb, GFP_KERNEL); if (unlikely(retval)) { usb_unanchor_urb(urb); usb_free_urb(urb); goto error; } file_data->in_urbs_used++; } usb_free_urb(urb); retval = 0; } error: *transferred = done; dev_dbg(dev, "%s: before kill\n", __func__); /* Attention: killing urbs can take long time (2 ms) */ usb_kill_anchored_urbs(&file_data->submitted); dev_dbg(dev, "%s: after kill\n", __func__); usb_scuttle_anchored_urbs(&file_data->in_anchor); file_data->in_urbs_used = 0; file_data->in_status = 0; /* no spinlock needed here */ dev_dbg(dev, "%s: done=%u ret=%d\n", __func__, done, retval); return retval; } static ssize_t usbtmc_ioctl_generic_read(struct usbtmc_file_data *file_data, void __user *arg) { struct usbtmc_message msg; ssize_t retval = 0; /* mutex already locked */ if (copy_from_user(&msg, arg, sizeof(struct usbtmc_message))) return -EFAULT; retval = usbtmc_generic_read(file_data, msg.message, msg.transfer_size, &msg.transferred, msg.flags); if (put_user(msg.transferred, &((struct usbtmc_message __user *)arg)->transferred)) return -EFAULT; return retval; } static void usbtmc_write_bulk_cb(struct urb *urb) { struct usbtmc_file_data *file_data = urb->context; int wakeup = 0; unsigned long flags; spin_lock_irqsave(&file_data->err_lock, flags); file_data->out_transfer_size += urb->actual_length; /* sync/async unlink faults aren't errors */ if (urb->status) { if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) dev_err(&file_data->data->intf->dev, "%s - nonzero write bulk status received: %d\n", __func__, urb->status); if (!file_data->out_status) { file_data->out_status = urb->status; wakeup = 1; } } spin_unlock_irqrestore(&file_data->err_lock, flags); dev_dbg(&file_data->data->intf->dev, "%s - write bulk total size: %u\n", __func__, file_data->out_transfer_size); up(&file_data->limit_write_sem); if (usb_anchor_empty(&file_data->submitted) || wakeup) wake_up_interruptible(&file_data->data->waitq); } static ssize_t usbtmc_generic_write(struct usbtmc_file_data *file_data, const void __user *user_buffer, u32 transfer_size, u32 *transferred, u32 flags) { struct usbtmc_device_data *data = file_data->data; struct device *dev; u32 done = 0; u32 remaining; unsigned long expire; const u32 bufsize = USBTMC_BUFSIZE; struct urb *urb = NULL; int retval = 0; u32 timeout; *transferred = 0; /* Get pointer to private data structure */ dev = &data->intf->dev; dev_dbg(dev, "%s: size=%u flags=0x%X sema=%u\n", __func__, transfer_size, flags, file_data->limit_write_sem.count); if (flags & USBTMC_FLAG_APPEND) { spin_lock_irq(&file_data->err_lock); retval = file_data->out_status; spin_unlock_irq(&file_data->err_lock); if (retval < 0) return retval; } else { spin_lock_irq(&file_data->err_lock); file_data->out_transfer_size = 0; file_data->out_status = 0; spin_unlock_irq(&file_data->err_lock); } remaining = transfer_size; if (remaining > INT_MAX) remaining = INT_MAX; timeout = file_data->timeout; expire = msecs_to_jiffies(timeout); while (remaining > 0) { u32 this_part, aligned; u8 *buffer = NULL; if (flags & USBTMC_FLAG_ASYNC) { if (down_trylock(&file_data->limit_write_sem)) { retval = (done)?(0):(-EAGAIN); goto exit; } } else { retval = down_timeout(&file_data->limit_write_sem, expire); if (retval < 0) { retval = -ETIMEDOUT; goto error; } } spin_lock_irq(&file_data->err_lock); retval = file_data->out_status; spin_unlock_irq(&file_data->err_lock); if (retval < 0) { up(&file_data->limit_write_sem); goto error; } /* prepare next urb to send */ urb = usbtmc_create_urb(); if (!urb) { retval = -ENOMEM; up(&file_data->limit_write_sem); goto error; } buffer = urb->transfer_buffer; if (remaining > bufsize) this_part = bufsize; else this_part = remaining; if (copy_from_user(buffer, user_buffer + done, this_part)) { retval = -EFAULT; up(&file_data->limit_write_sem); goto error; } print_hex_dump_debug("usbtmc ", DUMP_PREFIX_NONE, 16, 1, buffer, this_part, true); /* fill bulk with 32 bit alignment to meet USBTMC specification * (size + 3 & ~3) rounds up and simplifies user code */ aligned = (this_part + 3) & ~3; dev_dbg(dev, "write(size:%u align:%u done:%u)\n", (unsigned int)this_part, (unsigned int)aligned, (unsigned int)done); usb_fill_bulk_urb(urb, data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out), urb->transfer_buffer, aligned, usbtmc_write_bulk_cb, file_data); usb_anchor_urb(urb, &file_data->submitted); retval = usb_submit_urb(urb, GFP_KERNEL); if (unlikely(retval)) { usb_unanchor_urb(urb); up(&file_data->limit_write_sem); goto error; } usb_free_urb(urb); urb = NULL; /* urb will be finally released by usb driver */ remaining -= this_part; done += this_part; } /* All urbs are on the fly */ if (!(flags & USBTMC_FLAG_ASYNC)) { if (!usb_wait_anchor_empty_timeout(&file_data->submitted, timeout)) { retval = -ETIMEDOUT; goto error; } } retval = 0; goto exit; error: usb_kill_anchored_urbs(&file_data->submitted); exit: usb_free_urb(urb); spin_lock_irq(&file_data->err_lock); if (!(flags & USBTMC_FLAG_ASYNC)) done = file_data->out_transfer_size; if (!retval && file_data->out_status) retval = file_data->out_status; spin_unlock_irq(&file_data->err_lock); *transferred = done; dev_dbg(dev, "%s: done=%u, retval=%d, urbstat=%d\n", __func__, done, retval, file_data->out_status); return retval; } static ssize_t usbtmc_ioctl_generic_write(struct usbtmc_file_data *file_data, void __user *arg) { struct usbtmc_message msg; ssize_t retval = 0; /* mutex already locked */ if (copy_from_user(&msg, arg, sizeof(struct usbtmc_message))) return -EFAULT; retval = usbtmc_generic_write(file_data, msg.message, msg.transfer_size, &msg.transferred, msg.flags); if (put_user(msg.transferred, &((struct usbtmc_message __user *)arg)->transferred)) return -EFAULT; return retval; } /* * Get the generic write result */ static ssize_t usbtmc_ioctl_write_result(struct usbtmc_file_data *file_data, void __user *arg) { u32 transferred; int retval; spin_lock_irq(&file_data->err_lock); transferred = file_data->out_transfer_size; retval = file_data->out_status; spin_unlock_irq(&file_data->err_lock); if (put_user(transferred, (__u32 __user *)arg)) return -EFAULT; return retval; } /* * Sends a REQUEST_DEV_DEP_MSG_IN message on the Bulk-OUT endpoint. * @transfer_size: number of bytes to request from the device. * * See the USBTMC specification, Table 4. * * Also updates bTag_last_write. */ static int send_request_dev_dep_msg_in(struct usbtmc_file_data *file_data, u32 transfer_size) { struct usbtmc_device_data *data = file_data->data; int retval; u8 *buffer; int actual; buffer = kmalloc(USBTMC_HEADER_SIZE, GFP_KERNEL); if (!buffer) return -ENOMEM; /* Setup IO buffer for REQUEST_DEV_DEP_MSG_IN message * Refer to class specs for details */ buffer[0] = 2; buffer[1] = data->bTag; buffer[2] = ~data->bTag; buffer[3] = 0; /* Reserved */ buffer[4] = transfer_size >> 0; buffer[5] = transfer_size >> 8; buffer[6] = transfer_size >> 16; buffer[7] = transfer_size >> 24; buffer[8] = file_data->term_char_enabled * 2; /* Use term character? */ buffer[9] = file_data->term_char; buffer[10] = 0; /* Reserved */ buffer[11] = 0; /* Reserved */ /* Send bulk URB */ retval = usb_bulk_msg(data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out), buffer, USBTMC_HEADER_SIZE, &actual, file_data->timeout); /* Store bTag (in case we need to abort) */ data->bTag_last_write = data->bTag; /* Increment bTag -- and increment again if zero */ data->bTag++; if (!data->bTag) data->bTag++; kfree(buffer); if (retval < 0) dev_err(&data->intf->dev, "%s returned %d\n", __func__, retval); return retval; } static ssize_t usbtmc_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos) { struct usbtmc_file_data *file_data; struct usbtmc_device_data *data; struct device *dev; const u32 bufsize = USBTMC_BUFSIZE; u32 n_characters; u8 *buffer; int actual; u32 done = 0; u32 remaining; int retval; /* Get pointer to private data structure */ file_data = filp->private_data; data = file_data->data; dev = &data->intf->dev; buffer = kmalloc(bufsize, GFP_KERNEL); if (!buffer) return -ENOMEM; retval = mutex_lock_interruptible(&data->io_mutex); if (retval < 0) goto exit_nolock; if (data->zombie) { retval = -ENODEV; goto exit; } if (count > INT_MAX) count = INT_MAX; dev_dbg(dev, "%s(count:%zu)\n", __func__, count); retval = send_request_dev_dep_msg_in(file_data, count); if (retval < 0) { if (file_data->auto_abort) usbtmc_ioctl_abort_bulk_out(data); goto exit; } /* Loop until we have fetched everything we requested */ remaining = count; actual = 0; /* Send bulk URB */ retval = usb_bulk_msg(data->usb_dev, usb_rcvbulkpipe(data->usb_dev, data->bulk_in), buffer, bufsize, &actual, file_data->timeout); dev_dbg(dev, "%s: bulk_msg retval(%u), actual(%d)\n", __func__, retval, actual); /* Store bTag (in case we need to abort) */ data->bTag_last_read = data->bTag; if (retval < 0) { if (file_data->auto_abort) usbtmc_ioctl_abort_bulk_in(data); goto exit; } /* Sanity checks for the header */ if (actual < USBTMC_HEADER_SIZE) { dev_err(dev, "Device sent too small first packet: %u < %u\n", actual, USBTMC_HEADER_SIZE); if (file_data->auto_abort) usbtmc_ioctl_abort_bulk_in(data); goto exit; } if (buffer[0] != 2) { dev_err(dev, "Device sent reply with wrong MsgID: %u != 2\n", buffer[0]); if (file_data->auto_abort) usbtmc_ioctl_abort_bulk_in(data); goto exit; } if (buffer[1] != data->bTag_last_write) { dev_err(dev, "Device sent reply with wrong bTag: %u != %u\n", buffer[1], data->bTag_last_write); if (file_data->auto_abort) usbtmc_ioctl_abort_bulk_in(data); goto exit; } /* How many characters did the instrument send? */ n_characters = buffer[4] + (buffer[5] << 8) + (buffer[6] << 16) + (buffer[7] << 24); file_data->bmTransferAttributes = buffer[8]; dev_dbg(dev, "Bulk-IN header: N_characters(%u), bTransAttr(%u)\n", n_characters, buffer[8]); if (n_characters > remaining) { dev_err(dev, "Device wants to return more data than requested: %u > %zu\n", n_characters, count); if (file_data->auto_abort) usbtmc_ioctl_abort_bulk_in(data); goto exit; } print_hex_dump_debug("usbtmc ", DUMP_PREFIX_NONE, 16, 1, buffer, actual, true); remaining = n_characters; /* Remove the USBTMC header */ actual -= USBTMC_HEADER_SIZE; /* Remove padding if it exists */ if (actual > remaining) actual = remaining; remaining -= actual; /* Copy buffer to user space */ if (copy_to_user(buf, &buffer[USBTMC_HEADER_SIZE], actual)) { /* There must have been an addressing problem */ retval = -EFAULT; goto exit; } if ((actual + USBTMC_HEADER_SIZE) == bufsize) { retval = usbtmc_generic_read(file_data, buf + actual, remaining, &done, USBTMC_FLAG_IGNORE_TRAILER); if (retval < 0) goto exit; } done += actual; /* Update file position value */ *f_pos = *f_pos + done; retval = done; exit: mutex_unlock(&data->io_mutex); exit_nolock: kfree(buffer); return retval; } static ssize_t usbtmc_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos) { struct usbtmc_file_data *file_data; struct usbtmc_device_data *data; struct urb *urb = NULL; ssize_t retval = 0; u8 *buffer; u32 remaining, done; u32 transfersize, aligned, buflen; file_data = filp->private_data; data = file_data->data; mutex_lock(&data->io_mutex); if (data->zombie) { retval = -ENODEV; goto exit; } done = 0; spin_lock_irq(&file_data->err_lock); file_data->out_transfer_size = 0; file_data->out_status = 0; spin_unlock_irq(&file_data->err_lock); if (!count) goto exit; if (down_trylock(&file_data->limit_write_sem)) { /* previous calls were async */ retval = -EBUSY; goto exit; } urb = usbtmc_create_urb(); if (!urb) { retval = -ENOMEM; up(&file_data->limit_write_sem); goto exit; } buffer = urb->transfer_buffer; buflen = urb->transfer_buffer_length; if (count > INT_MAX) { transfersize = INT_MAX; buffer[8] = 0; } else { transfersize = count; buffer[8] = file_data->eom_val; } /* Setup IO buffer for DEV_DEP_MSG_OUT message */ buffer[0] = 1; buffer[1] = data->bTag; buffer[2] = ~data->bTag; buffer[3] = 0; /* Reserved */ buffer[4] = transfersize >> 0; buffer[5] = transfersize >> 8; buffer[6] = transfersize >> 16; buffer[7] = transfersize >> 24; /* buffer[8] is set above... */ buffer[9] = 0; /* Reserved */ buffer[10] = 0; /* Reserved */ buffer[11] = 0; /* Reserved */ remaining = transfersize; if (transfersize + USBTMC_HEADER_SIZE > buflen) { transfersize = buflen - USBTMC_HEADER_SIZE; aligned = buflen; } else { aligned = (transfersize + (USBTMC_HEADER_SIZE + 3)) & ~3; } if (copy_from_user(&buffer[USBTMC_HEADER_SIZE], buf, transfersize)) { retval = -EFAULT; up(&file_data->limit_write_sem); goto exit; } dev_dbg(&data->intf->dev, "%s(size:%u align:%u)\n", __func__, (unsigned int)transfersize, (unsigned int)aligned); print_hex_dump_debug("usbtmc ", DUMP_PREFIX_NONE, 16, 1, buffer, aligned, true); usb_fill_bulk_urb(urb, data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out), urb->transfer_buffer, aligned, usbtmc_write_bulk_cb, file_data); usb_anchor_urb(urb, &file_data->submitted); retval = usb_submit_urb(urb, GFP_KERNEL); if (unlikely(retval)) { usb_unanchor_urb(urb); up(&file_data->limit_write_sem); goto exit; } remaining -= transfersize; data->bTag_last_write = data->bTag; data->bTag++; if (!data->bTag) data->bTag++; /* call generic_write even when remaining = 0 */ retval = usbtmc_generic_write(file_data, buf + transfersize, remaining, &done, USBTMC_FLAG_APPEND); /* truncate alignment bytes */ if (done > remaining) done = remaining; /*add size of first urb*/ done += transfersize; if (retval < 0) { usb_kill_anchored_urbs(&file_data->submitted); dev_err(&data->intf->dev, "Unable to send data, error %d\n", (int)retval); if (file_data->auto_abort) usbtmc_ioctl_abort_bulk_out(data); goto exit; } retval = done; exit: usb_free_urb(urb); mutex_unlock(&data->io_mutex); return retval; } static int usbtmc_ioctl_clear(struct usbtmc_device_data *data) { struct device *dev; u8 *buffer; int rv; int n; int actual = 0; dev = &data->intf->dev; dev_dbg(dev, "Sending INITIATE_CLEAR request\n"); buffer = kmalloc(USBTMC_BUFSIZE, GFP_KERNEL); if (!buffer) return -ENOMEM; rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_INITIATE_CLEAR, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, 0, buffer, 1, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } dev_dbg(dev, "INITIATE_CLEAR returned %x\n", buffer[0]); if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "INITIATE_CLEAR returned %x\n", buffer[0]); rv = -EPERM; goto exit; } n = 0; usbtmc_clear_check_status: dev_dbg(dev, "Sending CHECK_CLEAR_STATUS request\n"); rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_CHECK_CLEAR_STATUS, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, 0, buffer, 2, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } dev_dbg(dev, "CHECK_CLEAR_STATUS returned %x\n", buffer[0]); if (buffer[0] == USBTMC_STATUS_SUCCESS) goto usbtmc_clear_bulk_out_halt; if (buffer[0] != USBTMC_STATUS_PENDING) { dev_err(dev, "CHECK_CLEAR_STATUS returned %x\n", buffer[0]); rv = -EPERM; goto exit; } if ((buffer[1] & 1) != 0) { do { dev_dbg(dev, "Reading from bulk in EP\n"); actual = 0; rv = usb_bulk_msg(data->usb_dev, usb_rcvbulkpipe(data->usb_dev, data->bulk_in), buffer, USBTMC_BUFSIZE, &actual, USB_CTRL_GET_TIMEOUT); print_hex_dump_debug("usbtmc ", DUMP_PREFIX_NONE, 16, 1, buffer, actual, true); n++; if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } } while ((actual == USBTMC_BUFSIZE) && (n < USBTMC_MAX_READS_TO_CLEAR_BULK_IN)); } else { /* do not stress device with subsequent requests */ msleep(50); n++; } if (n >= USBTMC_MAX_READS_TO_CLEAR_BULK_IN) { dev_err(dev, "Couldn't clear device buffer within %d cycles\n", USBTMC_MAX_READS_TO_CLEAR_BULK_IN); rv = -EPERM; goto exit; } goto usbtmc_clear_check_status; usbtmc_clear_bulk_out_halt: rv = usb_clear_halt(data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out)); if (rv < 0) { dev_err(dev, "usb_clear_halt returned %d\n", rv); goto exit; } rv = 0; exit: kfree(buffer); return rv; } static int usbtmc_ioctl_clear_out_halt(struct usbtmc_device_data *data) { int rv; rv = usb_clear_halt(data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out)); if (rv < 0) dev_err(&data->usb_dev->dev, "%s returned %d\n", __func__, rv); return rv; } static int usbtmc_ioctl_clear_in_halt(struct usbtmc_device_data *data) { int rv; rv = usb_clear_halt(data->usb_dev, usb_rcvbulkpipe(data->usb_dev, data->bulk_in)); if (rv < 0) dev_err(&data->usb_dev->dev, "%s returned %d\n", __func__, rv); return rv; } static int usbtmc_ioctl_cancel_io(struct usbtmc_file_data *file_data) { spin_lock_irq(&file_data->err_lock); file_data->in_status = -ECANCELED; file_data->out_status = -ECANCELED; spin_unlock_irq(&file_data->err_lock); usb_kill_anchored_urbs(&file_data->submitted); return 0; } static int usbtmc_ioctl_cleanup_io(struct usbtmc_file_data *file_data) { usb_kill_anchored_urbs(&file_data->submitted); usb_scuttle_anchored_urbs(&file_data->in_anchor); spin_lock_irq(&file_data->err_lock); file_data->in_status = 0; file_data->in_transfer_size = 0; file_data->out_status = 0; file_data->out_transfer_size = 0; spin_unlock_irq(&file_data->err_lock); file_data->in_urbs_used = 0; return 0; } static int get_capabilities(struct usbtmc_device_data *data) { struct device *dev = &data->usb_dev->dev; char *buffer; int rv = 0; buffer = kmalloc(0x18, GFP_KERNEL); if (!buffer) return -ENOMEM; rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_GET_CAPABILITIES, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, 0, buffer, 0x18, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto err_out; } dev_dbg(dev, "GET_CAPABILITIES returned %x\n", buffer[0]); if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "GET_CAPABILITIES returned %x\n", buffer[0]); rv = -EPERM; goto err_out; } dev_dbg(dev, "Interface capabilities are %x\n", buffer[4]); dev_dbg(dev, "Device capabilities are %x\n", buffer[5]); dev_dbg(dev, "USB488 interface capabilities are %x\n", buffer[14]); dev_dbg(dev, "USB488 device capabilities are %x\n", buffer[15]); data->capabilities.interface_capabilities = buffer[4]; data->capabilities.device_capabilities = buffer[5]; data->capabilities.usb488_interface_capabilities = buffer[14]; data->capabilities.usb488_device_capabilities = buffer[15]; data->usb488_caps = (buffer[14] & 0x07) | ((buffer[15] & 0x0f) << 4); rv = 0; err_out: kfree(buffer); return rv; } #define capability_attribute(name) \ static ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_interface *intf = to_usb_interface(dev); \ struct usbtmc_device_data *data = usb_get_intfdata(intf); \ \ return sprintf(buf, "%d\n", data->capabilities.name); \ } \ static DEVICE_ATTR_RO(name) capability_attribute(interface_capabilities); capability_attribute(device_capabilities); capability_attribute(usb488_interface_capabilities); capability_attribute(usb488_device_capabilities); static struct attribute *usbtmc_attrs[] = { &dev_attr_interface_capabilities.attr, &dev_attr_device_capabilities.attr, &dev_attr_usb488_interface_capabilities.attr, &dev_attr_usb488_device_capabilities.attr, NULL, }; ATTRIBUTE_GROUPS(usbtmc); static int usbtmc_ioctl_indicator_pulse(struct usbtmc_device_data *data) { struct device *dev; u8 *buffer; int rv; dev = &data->intf->dev; buffer = kmalloc(2, GFP_KERNEL); if (!buffer) return -ENOMEM; rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_INDICATOR_PULSE, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, 0, buffer, 0x01, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; } dev_dbg(dev, "INDICATOR_PULSE returned %x\n", buffer[0]); if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "INDICATOR_PULSE returned %x\n", buffer[0]); rv = -EPERM; goto exit; } rv = 0; exit: kfree(buffer); return rv; } static int usbtmc_ioctl_request(struct usbtmc_device_data *data, void __user *arg) { struct device *dev = &data->intf->dev; struct usbtmc_ctrlrequest request; u8 *buffer = NULL; int rv; unsigned int is_in, pipe; if (copy_from_user(&request, arg, sizeof(struct usbtmc_ctrlrequest))) return -EFAULT; if (request.req.wLength > USBTMC_BUFSIZE) return -EMSGSIZE; if (request.req.wLength == 0) /* Length-0 requests are never IN */ request.req.bRequestType &= ~USB_DIR_IN; is_in = request.req.bRequestType & USB_DIR_IN; if (request.req.wLength) { buffer = kmalloc(request.req.wLength, GFP_KERNEL); if (!buffer) return -ENOMEM; if (!is_in) { /* Send control data to device */ if (copy_from_user(buffer, request.data, request.req.wLength)) { rv = -EFAULT; goto exit; } } } if (is_in) pipe = usb_rcvctrlpipe(data->usb_dev, 0); else pipe = usb_sndctrlpipe(data->usb_dev, 0); rv = usb_control_msg(data->usb_dev, pipe, request.req.bRequest, request.req.bRequestType, request.req.wValue, request.req.wIndex, buffer, request.req.wLength, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "%s failed %d\n", __func__, rv); goto exit; } if (rv && is_in) { /* Read control data from device */ if (copy_to_user(request.data, buffer, rv)) rv = -EFAULT; } exit: kfree(buffer); return rv; } /* * Get the usb timeout value */ static int usbtmc_ioctl_get_timeout(struct usbtmc_file_data *file_data, void __user *arg) { u32 timeout; timeout = file_data->timeout; return put_user(timeout, (__u32 __user *)arg); } /* * Set the usb timeout value */ static int usbtmc_ioctl_set_timeout(struct usbtmc_file_data *file_data, void __user *arg) { u32 timeout; if (get_user(timeout, (__u32 __user *)arg)) return -EFAULT; /* Note that timeout = 0 means * MAX_SCHEDULE_TIMEOUT in usb_control_msg */ if (timeout < USBTMC_MIN_TIMEOUT) return -EINVAL; file_data->timeout = timeout; return 0; } /* * enables/disables sending EOM on write */ static int usbtmc_ioctl_eom_enable(struct usbtmc_file_data *file_data, void __user *arg) { u8 eom_enable; if (copy_from_user(&eom_enable, arg, sizeof(eom_enable))) return -EFAULT; if (eom_enable > 1) return -EINVAL; file_data->eom_val = eom_enable; return 0; } /* * Configure termination character for read() */ static int usbtmc_ioctl_config_termc(struct usbtmc_file_data *file_data, void __user *arg) { struct usbtmc_termchar termc; if (copy_from_user(&termc, arg, sizeof(termc))) return -EFAULT; if ((termc.term_char_enabled > 1) || (termc.term_char_enabled && !(file_data->data->capabilities.device_capabilities & 1))) return -EINVAL; file_data->term_char = termc.term_char; file_data->term_char_enabled = termc.term_char_enabled; return 0; } static long usbtmc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct usbtmc_file_data *file_data; struct usbtmc_device_data *data; int retval = -EBADRQC; __u8 tmp_byte; file_data = file->private_data; data = file_data->data; mutex_lock(&data->io_mutex); if (data->zombie) { retval = -ENODEV; goto skip_io_on_zombie; } switch (cmd) { case USBTMC_IOCTL_CLEAR_OUT_HALT: retval = usbtmc_ioctl_clear_out_halt(data); break; case USBTMC_IOCTL_CLEAR_IN_HALT: retval = usbtmc_ioctl_clear_in_halt(data); break; case USBTMC_IOCTL_INDICATOR_PULSE: retval = usbtmc_ioctl_indicator_pulse(data); break; case USBTMC_IOCTL_CLEAR: retval = usbtmc_ioctl_clear(data); break; case USBTMC_IOCTL_ABORT_BULK_OUT: retval = usbtmc_ioctl_abort_bulk_out(data); break; case USBTMC_IOCTL_ABORT_BULK_IN: retval = usbtmc_ioctl_abort_bulk_in(data); break; case USBTMC_IOCTL_CTRL_REQUEST: retval = usbtmc_ioctl_request(data, (void __user *)arg); break; case USBTMC_IOCTL_GET_TIMEOUT: retval = usbtmc_ioctl_get_timeout(file_data, (void __user *)arg); break; case USBTMC_IOCTL_SET_TIMEOUT: retval = usbtmc_ioctl_set_timeout(file_data, (void __user *)arg); break; case USBTMC_IOCTL_EOM_ENABLE: retval = usbtmc_ioctl_eom_enable(file_data, (void __user *)arg); break; case USBTMC_IOCTL_CONFIG_TERMCHAR: retval = usbtmc_ioctl_config_termc(file_data, (void __user *)arg); break; case USBTMC_IOCTL_WRITE: retval = usbtmc_ioctl_generic_write(file_data, (void __user *)arg); break; case USBTMC_IOCTL_READ: retval = usbtmc_ioctl_generic_read(file_data, (void __user *)arg); break; case USBTMC_IOCTL_WRITE_RESULT: retval = usbtmc_ioctl_write_result(file_data, (void __user *)arg); break; case USBTMC_IOCTL_API_VERSION: retval = put_user(USBTMC_API_VERSION, (__u32 __user *)arg); break; case USBTMC488_IOCTL_GET_CAPS: retval = put_user(data->usb488_caps, (unsigned char __user *)arg); break; case USBTMC488_IOCTL_READ_STB: retval = usbtmc488_ioctl_read_stb(file_data, (void __user *)arg); break; case USBTMC488_IOCTL_REN_CONTROL: retval = usbtmc488_ioctl_simple(data, (void __user *)arg, USBTMC488_REQUEST_REN_CONTROL); break; case USBTMC488_IOCTL_GOTO_LOCAL: retval = usbtmc488_ioctl_simple(data, (void __user *)arg, USBTMC488_REQUEST_GOTO_LOCAL); break; case USBTMC488_IOCTL_LOCAL_LOCKOUT: retval = usbtmc488_ioctl_simple(data, (void __user *)arg, USBTMC488_REQUEST_LOCAL_LOCKOUT); break; case USBTMC488_IOCTL_TRIGGER: retval = usbtmc488_ioctl_trigger(file_data); break; case USBTMC488_IOCTL_WAIT_SRQ: retval = usbtmc488_ioctl_wait_srq(file_data, (__u32 __user *)arg); break; case USBTMC_IOCTL_MSG_IN_ATTR: retval = put_user(file_data->bmTransferAttributes, (__u8 __user *)arg); break; case USBTMC_IOCTL_AUTO_ABORT: retval = get_user(tmp_byte, (unsigned char __user *)arg); if (retval == 0) file_data->auto_abort = !!tmp_byte; break; case USBTMC_IOCTL_GET_STB: retval = usbtmc_get_stb(file_data, &tmp_byte); if (!retval) retval = put_user(tmp_byte, (__u8 __user *)arg); break; case USBTMC_IOCTL_GET_SRQ_STB: retval = usbtmc_ioctl_get_srq_stb(file_data, (void __user *)arg); break; case USBTMC_IOCTL_CANCEL_IO: retval = usbtmc_ioctl_cancel_io(file_data); break; case USBTMC_IOCTL_CLEANUP_IO: retval = usbtmc_ioctl_cleanup_io(file_data); break; } skip_io_on_zombie: mutex_unlock(&data->io_mutex); return retval; } static int usbtmc_fasync(int fd, struct file *file, int on) { struct usbtmc_file_data *file_data = file->private_data; return fasync_helper(fd, file, on, &file_data->data->fasync); } static __poll_t usbtmc_poll(struct file *file, poll_table *wait) { struct usbtmc_file_data *file_data = file->private_data; struct usbtmc_device_data *data = file_data->data; __poll_t mask; mutex_lock(&data->io_mutex); if (data->zombie) { mask = EPOLLHUP | EPOLLERR; goto no_poll; } poll_wait(file, &data->waitq, wait); /* Note that EPOLLPRI is now assigned to SRQ, and * EPOLLIN|EPOLLRDNORM to normal read data. */ mask = 0; if (atomic_read(&file_data->srq_asserted)) mask |= EPOLLPRI; /* Note that the anchor submitted includes all urbs for BULK IN * and OUT. So EPOLLOUT is signaled when BULK OUT is empty and * all BULK IN urbs are completed and moved to in_anchor. */ if (usb_anchor_empty(&file_data->submitted)) mask |= (EPOLLOUT | EPOLLWRNORM); if (!usb_anchor_empty(&file_data->in_anchor)) mask |= (EPOLLIN | EPOLLRDNORM); spin_lock_irq(&file_data->err_lock); if (file_data->in_status || file_data->out_status) mask |= EPOLLERR; spin_unlock_irq(&file_data->err_lock); dev_dbg(&data->intf->dev, "poll mask = %x\n", mask); no_poll: mutex_unlock(&data->io_mutex); return mask; } static const struct file_operations fops = { .owner = THIS_MODULE, .read = usbtmc_read, .write = usbtmc_write, .open = usbtmc_open, .release = usbtmc_release, .flush = usbtmc_flush, .unlocked_ioctl = usbtmc_ioctl, .compat_ioctl = compat_ptr_ioctl, .fasync = usbtmc_fasync, .poll = usbtmc_poll, .llseek = default_llseek, }; static struct usb_class_driver usbtmc_class = { .name = "usbtmc%d", .fops = &fops, .minor_base = USBTMC_MINOR_BASE, }; static void usbtmc_interrupt(struct urb *urb) { struct usbtmc_device_data *data = urb->context; struct device *dev = &data->intf->dev; int status = urb->status; int rv; dev_dbg(&data->intf->dev, "int status: %d len %d\n", status, urb->actual_length); switch (status) { case 0: /* SUCCESS */ /* check for valid STB notification */ if (data->iin_buffer[0] > 0x81) { data->bNotify1 = data->iin_buffer[0]; data->bNotify2 = data->iin_buffer[1]; atomic_set(&data->iin_data_valid, 1); wake_up_interruptible(&data->waitq); goto exit; } /* check for SRQ notification */ if (data->iin_buffer[0] == 0x81) { unsigned long flags; struct list_head *elem; if (data->fasync) kill_fasync(&data->fasync, SIGIO, POLL_PRI); spin_lock_irqsave(&data->dev_lock, flags); list_for_each(elem, &data->file_list) { struct usbtmc_file_data *file_data; file_data = list_entry(elem, struct usbtmc_file_data, file_elem); file_data->srq_byte = data->iin_buffer[1]; atomic_set(&file_data->srq_asserted, 1); } spin_unlock_irqrestore(&data->dev_lock, flags); dev_dbg(dev, "srq received bTag %x stb %x\n", (unsigned int)data->iin_buffer[0], (unsigned int)data->iin_buffer[1]); wake_up_interruptible_all(&data->waitq); goto exit; } dev_warn(dev, "invalid notification: %x\n", data->iin_buffer[0]); break; case -EOVERFLOW: dev_err(dev, "overflow with length %d, actual length is %d\n", data->iin_wMaxPacketSize, urb->actual_length); fallthrough; default: /* urb terminated, clean up */ dev_dbg(dev, "urb terminated, status: %d\n", status); return; } exit: rv = usb_submit_urb(urb, GFP_ATOMIC); if (rv) dev_err(dev, "usb_submit_urb failed: %d\n", rv); } static void usbtmc_free_int(struct usbtmc_device_data *data) { if (!data->iin_ep_present || !data->iin_urb) return; usb_kill_urb(data->iin_urb); kfree(data->iin_buffer); data->iin_buffer = NULL; usb_free_urb(data->iin_urb); data->iin_urb = NULL; kref_put(&data->kref, usbtmc_delete); } static int usbtmc_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usbtmc_device_data *data; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *bulk_in, *bulk_out, *int_in; int retcode; dev_dbg(&intf->dev, "%s called\n", __func__); data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; data->intf = intf; data->id = id; data->usb_dev = usb_get_dev(interface_to_usbdev(intf)); usb_set_intfdata(intf, data); kref_init(&data->kref); mutex_init(&data->io_mutex); init_waitqueue_head(&data->waitq); atomic_set(&data->iin_data_valid, 0); INIT_LIST_HEAD(&data->file_list); spin_lock_init(&data->dev_lock); data->zombie = 0; /* Initialize USBTMC bTag and other fields */ data->bTag = 1; /* 2 <= bTag <= 127 USBTMC-USB488 subclass specification 4.3.1 */ data->iin_bTag = 2; /* USBTMC devices have only one setting, so use that */ iface_desc = data->intf->cur_altsetting; data->ifnum = iface_desc->desc.bInterfaceNumber; /* Find bulk endpoints */ retcode = usb_find_common_endpoints(iface_desc, &bulk_in, &bulk_out, NULL, NULL); if (retcode) { dev_err(&intf->dev, "bulk endpoints not found\n"); goto err_put; } retcode = -EINVAL; data->bulk_in = bulk_in->bEndpointAddress; data->wMaxPacketSize = usb_endpoint_maxp(bulk_in); if (!data->wMaxPacketSize) goto err_put; dev_dbg(&intf->dev, "Found bulk in endpoint at %u\n", data->bulk_in); data->bulk_out = bulk_out->bEndpointAddress; dev_dbg(&intf->dev, "Found Bulk out endpoint at %u\n", data->bulk_out); /* Find int endpoint */ retcode = usb_find_int_in_endpoint(iface_desc, &int_in); if (!retcode) { data->iin_ep_present = 1; data->iin_ep = int_in->bEndpointAddress; data->iin_wMaxPacketSize = usb_endpoint_maxp(int_in); data->iin_interval = int_in->bInterval; dev_dbg(&intf->dev, "Found Int in endpoint at %u\n", data->iin_ep); } retcode = get_capabilities(data); if (retcode) dev_err(&intf->dev, "can't read capabilities\n"); if (data->iin_ep_present) { /* allocate int urb */ data->iin_urb = usb_alloc_urb(0, GFP_KERNEL); if (!data->iin_urb) { retcode = -ENOMEM; goto error_register; } /* Protect interrupt in endpoint data until iin_urb is freed */ kref_get(&data->kref); /* allocate buffer for interrupt in */ data->iin_buffer = kmalloc(data->iin_wMaxPacketSize, GFP_KERNEL); if (!data->iin_buffer) { retcode = -ENOMEM; goto error_register; } /* fill interrupt urb */ usb_fill_int_urb(data->iin_urb, data->usb_dev, usb_rcvintpipe(data->usb_dev, data->iin_ep), data->iin_buffer, data->iin_wMaxPacketSize, usbtmc_interrupt, data, data->iin_interval); retcode = usb_submit_urb(data->iin_urb, GFP_KERNEL); if (retcode) { dev_err(&intf->dev, "Failed to submit iin_urb\n"); goto error_register; } } retcode = usb_register_dev(intf, &usbtmc_class); if (retcode) { dev_err(&intf->dev, "Not able to get a minor (base %u, slice default): %d\n", USBTMC_MINOR_BASE, retcode); goto error_register; } dev_dbg(&intf->dev, "Using minor number %d\n", intf->minor); return 0; error_register: usbtmc_free_int(data); err_put: kref_put(&data->kref, usbtmc_delete); return retcode; } static void usbtmc_disconnect(struct usb_interface *intf) { struct usbtmc_device_data *data = usb_get_intfdata(intf); struct list_head *elem; usb_deregister_dev(intf, &usbtmc_class); mutex_lock(&data->io_mutex); data->zombie = 1; wake_up_interruptible_all(&data->waitq); list_for_each(elem, &data->file_list) { struct usbtmc_file_data *file_data; file_data = list_entry(elem, struct usbtmc_file_data, file_elem); usb_kill_anchored_urbs(&file_data->submitted); usb_scuttle_anchored_urbs(&file_data->in_anchor); } mutex_unlock(&data->io_mutex); usbtmc_free_int(data); kref_put(&data->kref, usbtmc_delete); } static void usbtmc_draw_down(struct usbtmc_file_data *file_data) { int time; time = usb_wait_anchor_empty_timeout(&file_data->submitted, 1000); if (!time) usb_kill_anchored_urbs(&file_data->submitted); usb_scuttle_anchored_urbs(&file_data->in_anchor); } static int usbtmc_suspend(struct usb_interface *intf, pm_message_t message) { struct usbtmc_device_data *data = usb_get_intfdata(intf); struct list_head *elem; if (!data) return 0; mutex_lock(&data->io_mutex); list_for_each(elem, &data->file_list) { struct usbtmc_file_data *file_data; file_data = list_entry(elem, struct usbtmc_file_data, file_elem); usbtmc_draw_down(file_data); } if (data->iin_ep_present && data->iin_urb) usb_kill_urb(data->iin_urb); mutex_unlock(&data->io_mutex); return 0; } static int usbtmc_resume(struct usb_interface *intf) { struct usbtmc_device_data *data = usb_get_intfdata(intf); int retcode = 0; if (data->iin_ep_present && data->iin_urb) retcode = usb_submit_urb(data->iin_urb, GFP_KERNEL); if (retcode) dev_err(&intf->dev, "Failed to submit iin_urb\n"); return retcode; } static int usbtmc_pre_reset(struct usb_interface *intf) { struct usbtmc_device_data *data = usb_get_intfdata(intf); struct list_head *elem; if (!data) return 0; mutex_lock(&data->io_mutex); list_for_each(elem, &data->file_list) { struct usbtmc_file_data *file_data; file_data = list_entry(elem, struct usbtmc_file_data, file_elem); usbtmc_ioctl_cancel_io(file_data); } return 0; } static int usbtmc_post_reset(struct usb_interface *intf) { struct usbtmc_device_data *data = usb_get_intfdata(intf); mutex_unlock(&data->io_mutex); return 0; } static struct usb_driver usbtmc_driver = { .name = "usbtmc", .id_table = usbtmc_devices, .probe = usbtmc_probe, .disconnect = usbtmc_disconnect, .suspend = usbtmc_suspend, .resume = usbtmc_resume, .pre_reset = usbtmc_pre_reset, .post_reset = usbtmc_post_reset, .dev_groups = usbtmc_groups, }; module_usb_driver(usbtmc_driver); MODULE_DESCRIPTION("USB Test & Measurement class driver"); MODULE_LICENSE("GPL"); |
| 28 28 28 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Wireless configuration interface internals. * * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> * Copyright (C) 2018-2025 Intel Corporation */ #ifndef __NET_WIRELESS_CORE_H #define __NET_WIRELESS_CORE_H #include <linux/list.h> #include <linux/netdevice.h> #include <linux/rbtree.h> #include <linux/debugfs.h> #include <linux/rfkill.h> #include <linux/workqueue.h> #include <linux/rtnetlink.h> #include <net/genetlink.h> #include <net/cfg80211.h> #include "reg.h" #define WIPHY_IDX_INVALID -1 struct cfg80211_scan_request_int { struct cfg80211_scan_info info; bool notified; /* must be last - variable members */ struct cfg80211_scan_request req; }; struct cfg80211_registered_device { const struct cfg80211_ops *ops; struct list_head list; /* rfkill support */ struct rfkill_ops rfkill_ops; struct work_struct rfkill_block; /* ISO / IEC 3166 alpha2 for which this device is receiving * country IEs on, this can help disregard country IEs from APs * on the same alpha2 quickly. The alpha2 may differ from * cfg80211_regdomain's alpha2 when an intersection has occurred. * If the AP is reconfigured this can also be used to tell us if * the country on the country IE changed. */ char country_ie_alpha2[2]; /* * the driver requests the regulatory core to set this regulatory * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED * devices using the regulatory_set_wiphy_regd() API */ const struct ieee80211_regdomain *requested_regd; /* If a Country IE has been received this tells us the environment * which its telling us its in. This defaults to ENVIRON_ANY */ enum environment_cap env; /* wiphy index, internal only */ int wiphy_idx; /* protected by RTNL */ int devlist_generation, wdev_id; int opencount; wait_queue_head_t dev_wait; struct list_head beacon_registrations; spinlock_t beacon_registrations_lock; /* protected by RTNL only */ int num_running_ifaces; int num_running_monitor_ifaces; u64 cookie_counter; /* BSSes/scanning */ spinlock_t bss_lock; struct list_head bss_list; struct rb_root bss_tree; u32 bss_generation; u32 bss_entries; struct cfg80211_scan_request_int *scan_req; /* protected by RTNL */ struct cfg80211_scan_request_int *int_scan_req; struct sk_buff *scan_msg; struct list_head sched_scan_req_list; time64_t suspend_at; struct wiphy_work scan_done_wk; struct genl_info *cur_cmd_info; struct work_struct conn_work; struct work_struct event_work; struct delayed_work dfs_update_channels_wk; struct wireless_dev *background_radar_wdev; struct cfg80211_chan_def background_radar_chandef; struct delayed_work background_cac_done_wk; struct work_struct background_cac_abort_wk; /* netlink port which started critical protocol (0 means not started) */ u32 crit_proto_nlportid; struct cfg80211_coalesce *coalesce; struct work_struct destroy_work; struct wiphy_work sched_scan_stop_wk; struct work_struct sched_scan_res_wk; struct cfg80211_chan_def radar_chandef; struct work_struct propagate_radar_detect_wk; struct cfg80211_chan_def cac_done_chandef; struct work_struct propagate_cac_done_wk; struct work_struct mgmt_registrations_update_wk; /* lock for all wdev lists */ spinlock_t mgmt_registrations_lock; struct work_struct wiphy_work; struct list_head wiphy_work_list; /* protects the list above */ spinlock_t wiphy_work_lock; bool suspended; /* must be last because of the way we do wiphy_priv(), * and it should at least be aligned to NETDEV_ALIGN */ struct wiphy wiphy __aligned(NETDEV_ALIGN); }; static inline struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy) { BUG_ON(!wiphy); return container_of(wiphy, struct cfg80211_registered_device, wiphy); } static inline void cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev) { #ifdef CONFIG_PM int i; if (!rdev->wiphy.wowlan_config) return; for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++) kfree(rdev->wiphy.wowlan_config->patterns[i].mask); kfree(rdev->wiphy.wowlan_config->patterns); if (rdev->wiphy.wowlan_config->tcp && rdev->wiphy.wowlan_config->tcp->sock) sock_release(rdev->wiphy.wowlan_config->tcp->sock); kfree(rdev->wiphy.wowlan_config->tcp); kfree(rdev->wiphy.wowlan_config->nd_config); kfree(rdev->wiphy.wowlan_config); #endif } static inline u64 cfg80211_assign_cookie(struct cfg80211_registered_device *rdev) { u64 r = ++rdev->cookie_counter; if (WARN_ON(r == 0)) r = ++rdev->cookie_counter; return r; } extern struct workqueue_struct *cfg80211_wq; extern struct list_head cfg80211_rdev_list; extern int cfg80211_rdev_list_generation; /* This is constructed like this so it can be used in if/else */ static inline int for_each_rdev_check_rtnl(void) { ASSERT_RTNL(); return 0; } #define for_each_rdev(rdev) \ if (for_each_rdev_check_rtnl()) {} else \ list_for_each_entry(rdev, &cfg80211_rdev_list, list) enum bss_source_type { BSS_SOURCE_DIRECT = 0, BSS_SOURCE_MBSSID, BSS_SOURCE_STA_PROFILE, }; struct cfg80211_internal_bss { struct list_head list; struct list_head hidden_list; struct rb_node rbn; unsigned long ts; unsigned long refcount; atomic_t hold; /* time at the start of the reception of the first octet of the * timestamp field of the last beacon/probe received for this BSS. * The time is the TSF of the BSS specified by %parent_bssid. */ u64 parent_tsf; /* the BSS according to which %parent_tsf is set. This is set to * the BSS that the interface that requested the scan was connected to * when the beacon/probe was received. */ u8 parent_bssid[ETH_ALEN] __aligned(2); enum bss_source_type bss_source; /* must be last because of priv member */ struct cfg80211_bss pub; }; static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub) { return container_of(pub, struct cfg80211_internal_bss, pub); } static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss) { atomic_inc(&bss->hold); if (bss->pub.transmitted_bss) { bss = container_of(bss->pub.transmitted_bss, struct cfg80211_internal_bss, pub); atomic_inc(&bss->hold); } } static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss) { int r = atomic_dec_return(&bss->hold); WARN_ON(r < 0); if (bss->pub.transmitted_bss) { bss = container_of(bss->pub.transmitted_bss, struct cfg80211_internal_bss, pub); r = atomic_dec_return(&bss->hold); WARN_ON(r < 0); } } struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx); int get_wiphy_idx(struct wiphy *wiphy); struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, struct net *net); void cfg80211_init_wdev(struct wireless_dev *wdev); void cfg80211_register_wdev(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev) { lockdep_assert_held(&rdev->wiphy.mtx); return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces && rdev->num_running_ifaces > 0; } enum cfg80211_event_type { EVENT_CONNECT_RESULT, EVENT_ROAMED, EVENT_DISCONNECTED, EVENT_IBSS_JOINED, EVENT_STOPPED, EVENT_PORT_AUTHORIZED, }; struct cfg80211_event { struct list_head list; enum cfg80211_event_type type; union { struct cfg80211_connect_resp_params cr; struct cfg80211_roam_info rm; struct { const u8 *ie; size_t ie_len; u16 reason; bool locally_generated; } dc; struct { u8 bssid[ETH_ALEN]; struct ieee80211_channel *channel; } ij; struct { u8 peer_addr[ETH_ALEN]; const u8 *td_bitmap; u8 td_bitmap_len; } pa; }; }; struct cfg80211_cached_keys { struct key_params params[4]; u8 data[4][WLAN_KEY_LEN_WEP104]; int def; }; struct cfg80211_beacon_registration { struct list_head list; u32 nlportid; }; struct cfg80211_cqm_config { struct rcu_head rcu_head; u32 rssi_hyst; s32 last_rssi_event_value; enum nl80211_cqm_rssi_threshold_event last_rssi_event_type; bool use_range_api; int n_rssi_thresholds; s32 rssi_thresholds[] __counted_by(n_rssi_thresholds); }; void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work); void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev); /* free object */ void cfg80211_dev_free(struct cfg80211_registered_device *rdev); int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, char *newname); void ieee80211_set_bitrate_flags(struct wiphy *wiphy); void cfg80211_bss_expire(struct cfg80211_registered_device *rdev); void cfg80211_bss_age(struct cfg80211_registered_device *rdev, unsigned long age_secs); void cfg80211_update_assoc_bss_entry(struct wireless_dev *wdev, unsigned int link, struct ieee80211_channel *channel); /* IBSS */ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_ibss_params *params, struct cfg80211_cached_keys *connkeys); void cfg80211_clear_ibss(struct net_device *dev, bool nowext); int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, struct net_device *dev, bool nowext); void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, struct ieee80211_channel *channel); int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); /* mesh */ extern const struct mesh_config default_mesh_config; extern const struct mesh_setup default_mesh_setup; int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, struct net_device *dev, struct mesh_setup *setup, const struct mesh_config *conf); int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, struct net_device *dev); int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_chan_def *chandef); /* OCB */ int cfg80211_join_ocb(struct cfg80211_registered_device *rdev, struct net_device *dev, struct ocb_setup *setup); int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev, struct net_device *dev); /* AP */ int cfg80211_stop_ap(struct cfg80211_registered_device *rdev, struct net_device *dev, int link, bool notify); /* MLME */ int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_auth_request *req); int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_assoc_request *req, struct netlink_ext_ack *extack); int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, struct net_device *dev, const u8 *bssid, const u8 *ie, int ie_len, u16 reason, bool local_state_change); int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, struct net_device *dev, const u8 *ap_addr, const u8 *ie, int ie_len, u16 reason, bool local_state_change); void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, struct net_device *dev); int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid, u16 frame_type, const u8 *match_data, int match_len, bool multicast_rx, struct netlink_ext_ack *extack); void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk); void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid); void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev); int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_mgmt_tx_params *params, u64 *cookie); void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, const struct ieee80211_ht_cap *ht_capa_mask); void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa, const struct ieee80211_vht_cap *vht_capa_mask); /* SME events */ int cfg80211_connect(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_connect_params *connect, struct cfg80211_cached_keys *connkeys, const u8 *prev_bssid); void __cfg80211_connect_result(struct net_device *dev, struct cfg80211_connect_resp_params *params, bool wextev); void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, size_t ie_len, u16 reason, bool from_ap); int cfg80211_disconnect(struct cfg80211_registered_device *rdev, struct net_device *dev, u16 reason, bool wextev); void __cfg80211_roamed(struct wireless_dev *wdev, struct cfg80211_roam_info *info); void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *peer_addr, const u8 *td_bitmap, u8 td_bitmap_len); int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); void cfg80211_autodisconnect_wk(struct work_struct *work); /* SME implementation */ void cfg80211_conn_work(struct work_struct *work); void cfg80211_sme_scan_done(struct net_device *dev); bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status); void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len); void cfg80211_sme_disassoc(struct wireless_dev *wdev); void cfg80211_sme_deauth(struct wireless_dev *wdev); void cfg80211_sme_auth_timeout(struct wireless_dev *wdev); void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev); void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev); /* internal helpers */ bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher); bool cfg80211_valid_key_idx(struct cfg80211_registered_device *rdev, int key_idx, bool pairwise); int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, struct key_params *params, int key_idx, bool pairwise, const u8 *mac_addr); void __cfg80211_scan_done(struct wiphy *wiphy, struct wiphy_work *wk); void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool send_message); void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev, struct cfg80211_sched_scan_request *req); int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev, bool want_multi); void cfg80211_sched_scan_results_wk(struct work_struct *work); int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev, struct cfg80211_sched_scan_request *req, bool driver_initiated); int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev, u64 reqid, bool driver_initiated); void cfg80211_upload_connect_keys(struct wireless_dev *wdev); int cfg80211_change_iface(struct cfg80211_registered_device *rdev, struct net_device *dev, enum nl80211_iftype ntype, struct vif_params *params); void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev); void cfg80211_process_wiphy_works(struct cfg80211_registered_device *rdev, struct wiphy_work *end); void cfg80211_process_wdev_events(struct wireless_dev *wdev); bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range, u32 center_freq_khz, u32 bw_khz); int cfg80211_scan(struct cfg80211_registered_device *rdev); extern struct work_struct cfg80211_disconnect_work; #define NL80211_BSS_USE_FOR_ALL (NL80211_BSS_USE_FOR_NORMAL | \ NL80211_BSS_USE_FOR_MLD_LINK) void cfg80211_set_dfs_state(struct wiphy *wiphy, const struct cfg80211_chan_def *chandef, enum nl80211_dfs_state dfs_state); void cfg80211_dfs_channels_update_work(struct work_struct *work); void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev); int cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_chan_def *chandef); void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev); void cfg80211_background_cac_done_wk(struct work_struct *work); void cfg80211_background_cac_abort_wk(struct work_struct *work); bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy, struct ieee80211_channel *chan); bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev); bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef, struct ieee80211_channel *chan, bool primary_only); bool cfg80211_wdev_on_sub_chan(struct wireless_dev *wdev, struct ieee80211_channel *chan, bool primary_only); bool _cfg80211_chandef_usable(struct wiphy *wiphy, const struct cfg80211_chan_def *chandef, u32 prohibited_flags, u32 permitting_flags); static inline unsigned int elapsed_jiffies_msecs(unsigned long start) { unsigned long end = jiffies; if (end >= start) return jiffies_to_msecs(end - start); return jiffies_to_msecs(end + (ULONG_MAX - start) + 1); } int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_chan_def *chandef); int ieee80211_get_ratemask(struct ieee80211_supported_band *sband, const u8 *rates, unsigned int n_rates, u32 *mask); int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev, enum nl80211_iftype iftype, u32 beacon_int); void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, enum nl80211_iftype iftype, int num); void cfg80211_leave(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); void cfg80211_stop_nan(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); struct cfg80211_internal_bss * cfg80211_bss_update(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *tmp, bool signal_valid, unsigned long ts); enum ieee80211_ap_reg_power cfg80211_get_6ghz_power_type(const u8 *elems, size_t elems_len); #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond) #else /* * Trick to enable using it as a condition, * and also not give a warning when it's * not used that way. */ #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; }) #endif void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid); void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev); void cfg80211_pmsr_free_wk(struct work_struct *work); void cfg80211_remove_link(struct wireless_dev *wdev, unsigned int link_id); void cfg80211_remove_links(struct wireless_dev *wdev); int cfg80211_remove_virtual_intf(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); void cfg80211_wdev_release_link_bsses(struct wireless_dev *wdev, u16 link_mask); int cfg80211_assoc_ml_reconf(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_ml_reconf_req *req); /** * struct cfg80211_colocated_ap - colocated AP information * * @list: linked list to all colocated APs * @bssid: BSSID of the reported AP * @ssid: SSID of the reported AP * @ssid_len: length of the ssid * @center_freq: frequency the reported AP is on * @unsolicited_probe: the reported AP is part of an ESS, where all the APs * that operate in the same channel as the reported AP and that might be * detected by a STA receiving this frame, are transmitting unsolicited * Probe Response frames every 20 TUs * @oct_recommended: OCT is recommended to exchange MMPDUs with the reported AP * @same_ssid: the reported AP has the same SSID as the reporting AP * @multi_bss: the reported AP is part of a multiple BSSID set * @transmitted_bssid: the reported AP is the transmitting BSSID * @colocated_ess: all the APs that share the same ESS as the reported AP are * colocated and can be discovered via legacy bands. * @short_ssid_valid: short_ssid is valid and can be used * @short_ssid: the short SSID for this SSID * @psd_20: The 20MHz PSD EIRP of the primary 20MHz channel for the reported AP */ struct cfg80211_colocated_ap { struct list_head list; u8 bssid[ETH_ALEN]; u8 ssid[IEEE80211_MAX_SSID_LEN]; size_t ssid_len; u32 short_ssid; u32 center_freq; u8 unsolicited_probe:1, oct_recommended:1, same_ssid:1, multi_bss:1, transmitted_bssid:1, colocated_ess:1, short_ssid_valid:1; s8 psd_20; }; #if IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST) #define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym) #define VISIBLE_IF_CFG80211_KUNIT void cfg80211_free_coloc_ap_list(struct list_head *coloc_ap_list); int cfg80211_parse_colocated_ap(const struct cfg80211_bss_ies *ies, struct list_head *list); size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen, const u8 *subie, size_t subie_len, u8 *new_ie, size_t new_ie_len); #else #define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym) #define VISIBLE_IF_CFG80211_KUNIT static #endif /* IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST) */ #endif /* __NET_WIRELESS_CORE_H */ |
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1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 | // SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2009-2012 Realtek Corporation.*/ #include "wifi.h" #include "efuse.h" #include "pci.h" #include <linux/export.h> static const u8 PGPKT_DATA_SIZE = 8; static const int EFUSE_MAX_SIZE = 512; #define START_ADDRESS 0x1000 #define REG_MCUFWDL 0x0080 static const struct rtl_efuse_ops efuse_ops = { .efuse_onebyte_read = efuse_one_byte_read, .efuse_logical_map_read = efuse_shadow_read, }; static void efuse_shadow_read_1byte(struct ieee80211_hw *hw, u16 offset, u8 *value); static void efuse_shadow_read_2byte(struct ieee80211_hw *hw, u16 offset, u16 *value); static void efuse_shadow_read_4byte(struct ieee80211_hw *hw, u16 offset, u32 *value); static void efuse_shadow_write_1byte(struct ieee80211_hw *hw, u16 offset, u8 value); static void efuse_shadow_write_2byte(struct ieee80211_hw *hw, u16 offset, u16 value); static void efuse_shadow_write_4byte(struct ieee80211_hw *hw, u16 offset, u32 value); static int efuse_one_byte_write(struct ieee80211_hw *hw, u16 addr, u8 data); static void efuse_read_all_map(struct ieee80211_hw *hw, u8 *efuse); static int efuse_pg_packet_read(struct ieee80211_hw *hw, u8 offset, u8 *data); static int efuse_pg_packet_write(struct ieee80211_hw *hw, u8 offset, u8 word_en, u8 *data); static void efuse_word_enable_data_read(u8 word_en, u8 *sourdata, u8 *targetdata); static u8 enable_efuse_data_write(struct ieee80211_hw *hw, u16 efuse_addr, u8 word_en, u8 *data); static u16 efuse_get_current_size(struct ieee80211_hw *hw); static u8 efuse_calculate_word_cnts(u8 word_en); void efuse_initialize(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 bytetemp; u8 temp; bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[SYS_FUNC_EN] + 1); temp = bytetemp | 0x20; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[SYS_FUNC_EN] + 1, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[SYS_ISO_CTRL] + 1); temp = bytetemp & 0xFE; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[SYS_ISO_CTRL] + 1, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3); temp = bytetemp | 0x80; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3, temp); rtl_write_byte(rtlpriv, 0x2F8, 0x3); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3, 0x72); } u8 efuse_read_1byte(struct ieee80211_hw *hw, u16 address) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 data; u8 bytetemp; u8 temp; u32 k = 0; const u32 efuse_len = rtlpriv->cfg->maps[EFUSE_REAL_CONTENT_SIZE]; if (address < efuse_len) { temp = address & 0xFF; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 1, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2); temp = ((address >> 8) & 0x03) | (bytetemp & 0xFC); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3); temp = bytetemp & 0x7F; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3); while (!(bytetemp & 0x80)) { bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg-> maps[EFUSE_CTRL] + 3); k++; if (k == 1000) break; } data = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL]); return data; } else return 0xFF; } EXPORT_SYMBOL(efuse_read_1byte); void efuse_write_1byte(struct ieee80211_hw *hw, u16 address, u8 value) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 bytetemp; u8 temp; u32 k = 0; const u32 efuse_len = rtlpriv->cfg->maps[EFUSE_REAL_CONTENT_SIZE]; rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "Addr=%x Data =%x\n", address, value); if (address < efuse_len) { rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL], value); temp = address & 0xFF; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 1, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2); temp = ((address >> 8) & 0x03) | (bytetemp & 0xFC); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3); temp = bytetemp | 0x80; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3, temp); bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3); while (bytetemp & 0x80) { bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg-> maps[EFUSE_CTRL] + 3); k++; if (k == 100) { k = 0; break; } } } } void read_efuse_byte(struct ieee80211_hw *hw, u16 _offset, u8 *pbuf) { struct rtl_priv *rtlpriv = rtl_priv(hw); u16 max_attempts = 10000; u32 value32; u8 readbyte; u16 retry; /* * In case of USB devices, transfer speeds are limited, hence * efuse I/O reads could be (way) slower. So, decrease (a lot) * the read attempts in case of failures. */ if (rtlpriv->rtlhal.interface == INTF_USB) max_attempts = 10; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 1, (_offset & 0xff)); readbyte = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2, ((_offset >> 8) & 0x03) | (readbyte & 0xfc)); readbyte = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3, (readbyte & 0x7f)); retry = 0; value32 = rtl_read_dword(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL]); while (!(((value32 >> 24) & 0xff) & 0x80) && (retry < max_attempts)) { value32 = rtl_read_dword(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL]); retry++; } udelay(50); value32 = rtl_read_dword(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL]); *pbuf = (u8) (value32 & 0xff); } EXPORT_SYMBOL_GPL(read_efuse_byte); void read_efuse(struct ieee80211_hw *hw, u16 _offset, u16 _size_byte, u8 *pbuf) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); u8 *efuse_tbl; u8 rtemp8[1]; u16 efuse_addr = 0; u8 offset, wren; u8 u1temp = 0; u16 i; u16 j; const u16 efuse_max_section = rtlpriv->cfg->maps[EFUSE_MAX_SECTION_MAP]; const u32 efuse_len = rtlpriv->cfg->maps[EFUSE_REAL_CONTENT_SIZE]; u16 **efuse_word; u16 efuse_utilized = 0; u8 efuse_usage; if ((_offset + _size_byte) > rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE]) { rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "%s: Invalid offset(%#x) with read bytes(%#x)!!\n", __func__, _offset, _size_byte); return; } /* allocate memory for efuse_tbl and efuse_word */ efuse_tbl = kzalloc(rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE], GFP_ATOMIC); if (!efuse_tbl) return; efuse_word = kcalloc(EFUSE_MAX_WORD_UNIT, sizeof(u16 *), GFP_ATOMIC); if (!efuse_word) goto out; for (i = 0; i < EFUSE_MAX_WORD_UNIT; i++) { efuse_word[i] = kcalloc(efuse_max_section, sizeof(u16), GFP_ATOMIC); if (!efuse_word[i]) goto done; } for (i = 0; i < efuse_max_section; i++) for (j = 0; j < EFUSE_MAX_WORD_UNIT; j++) efuse_word[j][i] = 0xFFFF; read_efuse_byte(hw, efuse_addr, rtemp8); if (*rtemp8 != 0xFF) { efuse_utilized++; RTPRINT(rtlpriv, FEEPROM, EFUSE_READ_ALL, "Addr=%d\n", efuse_addr); efuse_addr++; } while ((*rtemp8 != 0xFF) && (efuse_addr < efuse_len)) { /* Check PG header for section num. */ if ((*rtemp8 & 0x1F) == 0x0F) {/* extended header */ u1temp = ((*rtemp8 & 0xE0) >> 5); read_efuse_byte(hw, efuse_addr, rtemp8); if ((*rtemp8 & 0x0F) == 0x0F) { efuse_addr++; read_efuse_byte(hw, efuse_addr, rtemp8); if (*rtemp8 != 0xFF && (efuse_addr < efuse_len)) { efuse_addr++; } continue; } else { offset = ((*rtemp8 & 0xF0) >> 1) | u1temp; wren = (*rtemp8 & 0x0F); efuse_addr++; } } else { offset = ((*rtemp8 >> 4) & 0x0f); wren = (*rtemp8 & 0x0f); } if (offset < efuse_max_section) { RTPRINT(rtlpriv, FEEPROM, EFUSE_READ_ALL, "offset-%d Worden=%x\n", offset, wren); for (i = 0; i < EFUSE_MAX_WORD_UNIT; i++) { if (!(wren & 0x01)) { RTPRINT(rtlpriv, FEEPROM, EFUSE_READ_ALL, "Addr=%d\n", efuse_addr); read_efuse_byte(hw, efuse_addr, rtemp8); efuse_addr++; efuse_utilized++; efuse_word[i][offset] = (*rtemp8 & 0xff); if (efuse_addr >= efuse_len) break; RTPRINT(rtlpriv, FEEPROM, EFUSE_READ_ALL, "Addr=%d\n", efuse_addr); read_efuse_byte(hw, efuse_addr, rtemp8); efuse_addr++; efuse_utilized++; efuse_word[i][offset] |= (((u16)*rtemp8 << 8) & 0xff00); if (efuse_addr >= efuse_len) break; } wren >>= 1; } } RTPRINT(rtlpriv, FEEPROM, EFUSE_READ_ALL, "Addr=%d\n", efuse_addr); read_efuse_byte(hw, efuse_addr, rtemp8); if (*rtemp8 != 0xFF && (efuse_addr < efuse_len)) { efuse_utilized++; efuse_addr++; } } for (i = 0; i < efuse_max_section; i++) { for (j = 0; j < EFUSE_MAX_WORD_UNIT; j++) { efuse_tbl[(i * 8) + (j * 2)] = (efuse_word[j][i] & 0xff); efuse_tbl[(i * 8) + ((j * 2) + 1)] = ((efuse_word[j][i] >> 8) & 0xff); } } for (i = 0; i < _size_byte; i++) pbuf[i] = efuse_tbl[_offset + i]; rtlefuse->efuse_usedbytes = efuse_utilized; efuse_usage = (u8) ((efuse_utilized * 100) / efuse_len); rtlefuse->efuse_usedpercentage = efuse_usage; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_EFUSE_BYTES, (u8 *)&efuse_utilized); rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_EFUSE_USAGE, &efuse_usage); done: for (i = 0; i < EFUSE_MAX_WORD_UNIT; i++) kfree(efuse_word[i]); kfree(efuse_word); out: kfree(efuse_tbl); } bool efuse_shadow_update_chk(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); u8 section_idx, i, base; u16 words_need = 0, hdr_num = 0, totalbytes, efuse_used; bool wordchanged, result = true; for (section_idx = 0; section_idx < 16; section_idx++) { base = section_idx * 8; wordchanged = false; for (i = 0; i < 8; i = i + 2) { if (rtlefuse->efuse_map[EFUSE_INIT_MAP][base + i] != rtlefuse->efuse_map[EFUSE_MODIFY_MAP][base + i] || rtlefuse->efuse_map[EFUSE_INIT_MAP][base + i + 1] != rtlefuse->efuse_map[EFUSE_MODIFY_MAP][base + i + 1]) { words_need++; wordchanged = true; } } if (wordchanged) hdr_num++; } totalbytes = hdr_num + words_need * 2; efuse_used = rtlefuse->efuse_usedbytes; if ((totalbytes + efuse_used) >= (EFUSE_MAX_SIZE - rtlpriv->cfg->maps[EFUSE_OOB_PROTECT_BYTES_LEN])) result = false; rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "%s: totalbytes(%#x), hdr_num(%#x), words_need(%#x), efuse_used(%d)\n", __func__, totalbytes, hdr_num, words_need, efuse_used); return result; } void efuse_shadow_read(struct ieee80211_hw *hw, u8 type, u16 offset, u32 *value) { if (type == 1) efuse_shadow_read_1byte(hw, offset, (u8 *)value); else if (type == 2) efuse_shadow_read_2byte(hw, offset, (u16 *)value); else if (type == 4) efuse_shadow_read_4byte(hw, offset, value); } EXPORT_SYMBOL(efuse_shadow_read); void efuse_shadow_write(struct ieee80211_hw *hw, u8 type, u16 offset, u32 value) { if (type == 1) efuse_shadow_write_1byte(hw, offset, (u8) value); else if (type == 2) efuse_shadow_write_2byte(hw, offset, (u16) value); else if (type == 4) efuse_shadow_write_4byte(hw, offset, value); } bool efuse_shadow_update(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); u16 i, offset, base; u8 word_en = 0x0F; u8 first_pg = false; rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "\n"); if (!efuse_shadow_update_chk(hw)) { efuse_read_all_map(hw, &rtlefuse->efuse_map[EFUSE_INIT_MAP][0]); memcpy(&rtlefuse->efuse_map[EFUSE_MODIFY_MAP][0], &rtlefuse->efuse_map[EFUSE_INIT_MAP][0], rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE]); rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "efuse out of capacity!!\n"); return false; } efuse_power_switch(hw, true, true); for (offset = 0; offset < 16; offset++) { word_en = 0x0F; base = offset * 8; for (i = 0; i < 8; i++) { if (first_pg) { word_en &= ~(BIT(i / 2)); rtlefuse->efuse_map[EFUSE_INIT_MAP][base + i] = rtlefuse->efuse_map[EFUSE_MODIFY_MAP][base + i]; } else { if (rtlefuse->efuse_map[EFUSE_INIT_MAP][base + i] != rtlefuse->efuse_map[EFUSE_MODIFY_MAP][base + i]) { word_en &= ~(BIT(i / 2)); rtlefuse->efuse_map[EFUSE_INIT_MAP][base + i] = rtlefuse->efuse_map[EFUSE_MODIFY_MAP][base + i]; } } } if (word_en != 0x0F) { u8 tmpdata[8]; memcpy(tmpdata, &rtlefuse->efuse_map[EFUSE_MODIFY_MAP][base], 8); RT_PRINT_DATA(rtlpriv, COMP_INIT, DBG_LOUD, "U-efuse\n", tmpdata, 8); if (!efuse_pg_packet_write(hw, (u8) offset, word_en, tmpdata)) { rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "PG section(%#x) fail!!\n", offset); break; } } } efuse_power_switch(hw, true, false); efuse_read_all_map(hw, &rtlefuse->efuse_map[EFUSE_INIT_MAP][0]); memcpy(&rtlefuse->efuse_map[EFUSE_MODIFY_MAP][0], &rtlefuse->efuse_map[EFUSE_INIT_MAP][0], rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE]); rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "\n"); return true; } void rtl_efuse_shadow_map_update(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); if (rtlefuse->autoload_failflag) memset((&rtlefuse->efuse_map[EFUSE_INIT_MAP][0]), 0xFF, rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE]); else efuse_read_all_map(hw, &rtlefuse->efuse_map[EFUSE_INIT_MAP][0]); memcpy(&rtlefuse->efuse_map[EFUSE_MODIFY_MAP][0], &rtlefuse->efuse_map[EFUSE_INIT_MAP][0], rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE]); } EXPORT_SYMBOL(rtl_efuse_shadow_map_update); void efuse_force_write_vendor_id(struct ieee80211_hw *hw) { u8 tmpdata[8] = { 0xFF, 0xFF, 0xEC, 0x10, 0xFF, 0xFF, 0xFF, 0xFF }; efuse_power_switch(hw, true, true); efuse_pg_packet_write(hw, 1, 0xD, tmpdata); efuse_power_switch(hw, true, false); } void efuse_re_pg_section(struct ieee80211_hw *hw, u8 section_idx) { } static void efuse_shadow_read_1byte(struct ieee80211_hw *hw, u16 offset, u8 *value) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); *value = rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset]; } static void efuse_shadow_read_2byte(struct ieee80211_hw *hw, u16 offset, u16 *value) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); *value = rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset]; *value |= rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 1] << 8; } static void efuse_shadow_read_4byte(struct ieee80211_hw *hw, u16 offset, u32 *value) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); *value = rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset]; *value |= rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 1] << 8; *value |= rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 2] << 16; *value |= rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 3] << 24; } static void efuse_shadow_write_1byte(struct ieee80211_hw *hw, u16 offset, u8 value) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset] = value; } static void efuse_shadow_write_2byte(struct ieee80211_hw *hw, u16 offset, u16 value) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset] = value & 0x00FF; rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 1] = value >> 8; } static void efuse_shadow_write_4byte(struct ieee80211_hw *hw, u16 offset, u32 value) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset] = (u8) (value & 0x000000FF); rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 1] = (u8) ((value >> 8) & 0x0000FF); rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 2] = (u8) ((value >> 16) & 0x00FF); rtlefuse->efuse_map[EFUSE_MODIFY_MAP][offset + 3] = (u8) ((value >> 24) & 0xFF); } int efuse_one_byte_read(struct ieee80211_hw *hw, u16 addr, u8 *data) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 tmpidx = 0; int result; rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 1, (u8) (addr & 0xff)); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2, ((u8) ((addr >> 8) & 0x03)) | (rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2) & 0xFC)); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3, 0x72); while (!(0x80 & rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3)) && (tmpidx < 100)) { tmpidx++; } if (tmpidx < 100) { *data = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL]); result = true; } else { *data = 0xff; result = false; } return result; } EXPORT_SYMBOL(efuse_one_byte_read); static int efuse_one_byte_write(struct ieee80211_hw *hw, u16 addr, u8 data) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 tmpidx = 0; rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "Addr = %x Data=%x\n", addr, data); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 1, (u8) (addr & 0xff)); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2, (rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2) & 0xFC) | (u8) ((addr >> 8) & 0x03)); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL], data); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3, 0xF2); while ((0x80 & rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3)) && (tmpidx < 100)) { tmpidx++; } if (tmpidx < 100) return true; return false; } static void efuse_read_all_map(struct ieee80211_hw *hw, u8 *efuse) { struct rtl_priv *rtlpriv = rtl_priv(hw); efuse_power_switch(hw, false, true); read_efuse(hw, 0, rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE], efuse); efuse_power_switch(hw, false, false); } static void efuse_read_data_case1(struct ieee80211_hw *hw, u16 *efuse_addr, u8 efuse_data, u8 offset, u8 *tmpdata, u8 *readstate) { bool dataempty = true; u8 hoffset; u8 tmpidx; u8 hworden; u8 word_cnts; hoffset = (efuse_data >> 4) & 0x0F; hworden = efuse_data & 0x0F; word_cnts = efuse_calculate_word_cnts(hworden); if (hoffset == offset) { for (tmpidx = 0; tmpidx < word_cnts * 2; tmpidx++) { if (efuse_one_byte_read(hw, *efuse_addr + 1 + tmpidx, &efuse_data)) { tmpdata[tmpidx] = efuse_data; if (efuse_data != 0xff) dataempty = false; } } if (!dataempty) { *readstate = PG_STATE_DATA; } else { *efuse_addr = *efuse_addr + (word_cnts * 2) + 1; *readstate = PG_STATE_HEADER; } } else { *efuse_addr = *efuse_addr + (word_cnts * 2) + 1; *readstate = PG_STATE_HEADER; } } static int efuse_pg_packet_read(struct ieee80211_hw *hw, u8 offset, u8 *data) { u8 readstate = PG_STATE_HEADER; bool continual = true; u8 efuse_data, word_cnts = 0; u16 efuse_addr = 0; u8 tmpdata[8]; if (data == NULL) return false; if (offset > 15) return false; memset(data, 0xff, PGPKT_DATA_SIZE * sizeof(u8)); memset(tmpdata, 0xff, PGPKT_DATA_SIZE * sizeof(u8)); while (continual && (efuse_addr < EFUSE_MAX_SIZE)) { if (readstate & PG_STATE_HEADER) { if (efuse_one_byte_read(hw, efuse_addr, &efuse_data) && (efuse_data != 0xFF)) efuse_read_data_case1(hw, &efuse_addr, efuse_data, offset, tmpdata, &readstate); else continual = false; } else if (readstate & PG_STATE_DATA) { efuse_word_enable_data_read(0, tmpdata, data); efuse_addr = efuse_addr + (word_cnts * 2) + 1; readstate = PG_STATE_HEADER; } } if ((data[0] == 0xff) && (data[1] == 0xff) && (data[2] == 0xff) && (data[3] == 0xff) && (data[4] == 0xff) && (data[5] == 0xff) && (data[6] == 0xff) && (data[7] == 0xff)) return false; else return true; } static void efuse_write_data_case1(struct ieee80211_hw *hw, u16 *efuse_addr, u8 efuse_data, u8 offset, int *continual, u8 *write_state, struct pgpkt_struct *target_pkt, int *repeat_times, int *result, u8 word_en) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct pgpkt_struct tmp_pkt; int dataempty = true; u8 originaldata[8 * sizeof(u8)]; u8 badworden = 0x0F; u8 match_word_en, tmp_word_en; u8 tmpindex; u8 tmp_header = efuse_data; u8 tmp_word_cnts; tmp_pkt.offset = (tmp_header >> 4) & 0x0F; tmp_pkt.word_en = tmp_header & 0x0F; tmp_word_cnts = efuse_calculate_word_cnts(tmp_pkt.word_en); if (tmp_pkt.offset != target_pkt->offset) { *efuse_addr = *efuse_addr + (tmp_word_cnts * 2) + 1; *write_state = PG_STATE_HEADER; } else { for (tmpindex = 0; tmpindex < (tmp_word_cnts * 2); tmpindex++) { if (efuse_one_byte_read(hw, (*efuse_addr + 1 + tmpindex), &efuse_data) && (efuse_data != 0xFF)) dataempty = false; } if (!dataempty) { *efuse_addr = *efuse_addr + (tmp_word_cnts * 2) + 1; *write_state = PG_STATE_HEADER; } else { match_word_en = 0x0F; if (!((target_pkt->word_en & BIT(0)) | (tmp_pkt.word_en & BIT(0)))) match_word_en &= (~BIT(0)); if (!((target_pkt->word_en & BIT(1)) | (tmp_pkt.word_en & BIT(1)))) match_word_en &= (~BIT(1)); if (!((target_pkt->word_en & BIT(2)) | (tmp_pkt.word_en & BIT(2)))) match_word_en &= (~BIT(2)); if (!((target_pkt->word_en & BIT(3)) | (tmp_pkt.word_en & BIT(3)))) match_word_en &= (~BIT(3)); if ((match_word_en & 0x0F) != 0x0F) { badworden = enable_efuse_data_write(hw, *efuse_addr + 1, tmp_pkt.word_en, target_pkt->data); if (0x0F != (badworden & 0x0F)) { u8 reorg_offset = offset; u8 reorg_worden = badworden; efuse_pg_packet_write(hw, reorg_offset, reorg_worden, originaldata); } tmp_word_en = 0x0F; if ((target_pkt->word_en & BIT(0)) ^ (match_word_en & BIT(0))) tmp_word_en &= (~BIT(0)); if ((target_pkt->word_en & BIT(1)) ^ (match_word_en & BIT(1))) tmp_word_en &= (~BIT(1)); if ((target_pkt->word_en & BIT(2)) ^ (match_word_en & BIT(2))) tmp_word_en &= (~BIT(2)); if ((target_pkt->word_en & BIT(3)) ^ (match_word_en & BIT(3))) tmp_word_en &= (~BIT(3)); if ((tmp_word_en & 0x0F) != 0x0F) { *efuse_addr = efuse_get_current_size(hw); target_pkt->offset = offset; target_pkt->word_en = tmp_word_en; } else { *continual = false; } *write_state = PG_STATE_HEADER; *repeat_times += 1; if (*repeat_times > EFUSE_REPEAT_THRESHOLD_) { *continual = false; *result = false; } } else { *efuse_addr += (2 * tmp_word_cnts) + 1; target_pkt->offset = offset; target_pkt->word_en = word_en; *write_state = PG_STATE_HEADER; } } } RTPRINT(rtlpriv, FEEPROM, EFUSE_PG, "efuse PG_STATE_HEADER-1\n"); } static void efuse_write_data_case2(struct ieee80211_hw *hw, u16 *efuse_addr, int *continual, u8 *write_state, struct pgpkt_struct target_pkt, int *repeat_times, int *result) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct pgpkt_struct tmp_pkt; u8 pg_header; u8 tmp_header; u8 originaldata[8 * sizeof(u8)]; u8 tmp_word_cnts; u8 badworden = 0x0F; pg_header = ((target_pkt.offset << 4) & 0xf0) | target_pkt.word_en; efuse_one_byte_write(hw, *efuse_addr, pg_header); efuse_one_byte_read(hw, *efuse_addr, &tmp_header); if (tmp_header == pg_header) { *write_state = PG_STATE_DATA; } else if (tmp_header == 0xFF) { *write_state = PG_STATE_HEADER; *repeat_times += 1; if (*repeat_times > EFUSE_REPEAT_THRESHOLD_) { *continual = false; *result = false; } } else { tmp_pkt.offset = (tmp_header >> 4) & 0x0F; tmp_pkt.word_en = tmp_header & 0x0F; tmp_word_cnts = efuse_calculate_word_cnts(tmp_pkt.word_en); memset(originaldata, 0xff, 8 * sizeof(u8)); if (efuse_pg_packet_read(hw, tmp_pkt.offset, originaldata)) { badworden = enable_efuse_data_write(hw, *efuse_addr + 1, tmp_pkt.word_en, originaldata); if (0x0F != (badworden & 0x0F)) { u8 reorg_offset = tmp_pkt.offset; u8 reorg_worden = badworden; efuse_pg_packet_write(hw, reorg_offset, reorg_worden, originaldata); *efuse_addr = efuse_get_current_size(hw); } else { *efuse_addr = *efuse_addr + (tmp_word_cnts * 2) + 1; } } else { *efuse_addr = *efuse_addr + (tmp_word_cnts * 2) + 1; } *write_state = PG_STATE_HEADER; *repeat_times += 1; if (*repeat_times > EFUSE_REPEAT_THRESHOLD_) { *continual = false; *result = false; } RTPRINT(rtlpriv, FEEPROM, EFUSE_PG, "efuse PG_STATE_HEADER-2\n"); } } static int efuse_pg_packet_write(struct ieee80211_hw *hw, u8 offset, u8 word_en, u8 *data) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct pgpkt_struct target_pkt; u8 write_state = PG_STATE_HEADER; int continual = true, result = true; u16 efuse_addr = 0; u8 efuse_data; u8 target_word_cnts = 0; u8 badworden = 0x0F; static int repeat_times; if (efuse_get_current_size(hw) >= (EFUSE_MAX_SIZE - rtlpriv->cfg->maps[EFUSE_OOB_PROTECT_BYTES_LEN])) { RTPRINT(rtlpriv, FEEPROM, EFUSE_PG, "efuse_pg_packet_write error\n"); return false; } target_pkt.offset = offset; target_pkt.word_en = word_en; memset(target_pkt.data, 0xFF, 8 * sizeof(u8)); efuse_word_enable_data_read(word_en, data, target_pkt.data); target_word_cnts = efuse_calculate_word_cnts(target_pkt.word_en); RTPRINT(rtlpriv, FEEPROM, EFUSE_PG, "efuse Power ON\n"); while (continual && (efuse_addr < (EFUSE_MAX_SIZE - rtlpriv->cfg->maps[EFUSE_OOB_PROTECT_BYTES_LEN]))) { if (write_state == PG_STATE_HEADER) { badworden = 0x0F; RTPRINT(rtlpriv, FEEPROM, EFUSE_PG, "efuse PG_STATE_HEADER\n"); if (efuse_one_byte_read(hw, efuse_addr, &efuse_data) && (efuse_data != 0xFF)) efuse_write_data_case1(hw, &efuse_addr, efuse_data, offset, &continual, &write_state, &target_pkt, &repeat_times, &result, word_en); else efuse_write_data_case2(hw, &efuse_addr, &continual, &write_state, target_pkt, &repeat_times, &result); } else if (write_state == PG_STATE_DATA) { RTPRINT(rtlpriv, FEEPROM, EFUSE_PG, "efuse PG_STATE_DATA\n"); badworden = enable_efuse_data_write(hw, efuse_addr + 1, target_pkt.word_en, target_pkt.data); if ((badworden & 0x0F) == 0x0F) { continual = false; } else { efuse_addr = efuse_addr + (2 * target_word_cnts) + 1; target_pkt.offset = offset; target_pkt.word_en = badworden; target_word_cnts = efuse_calculate_word_cnts(target_pkt. word_en); write_state = PG_STATE_HEADER; repeat_times++; if (repeat_times > EFUSE_REPEAT_THRESHOLD_) { continual = false; result = false; } RTPRINT(rtlpriv, FEEPROM, EFUSE_PG, "efuse PG_STATE_HEADER-3\n"); } } } if (efuse_addr >= (EFUSE_MAX_SIZE - rtlpriv->cfg->maps[EFUSE_OOB_PROTECT_BYTES_LEN])) { rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "efuse_addr(%#x) Out of size!!\n", efuse_addr); } return true; } static void efuse_word_enable_data_read(u8 word_en, u8 *sourdata, u8 *targetdata) { if (!(word_en & BIT(0))) { targetdata[0] = sourdata[0]; targetdata[1] = sourdata[1]; } if (!(word_en & BIT(1))) { targetdata[2] = sourdata[2]; targetdata[3] = sourdata[3]; } if (!(word_en & BIT(2))) { targetdata[4] = sourdata[4]; targetdata[5] = sourdata[5]; } if (!(word_en & BIT(3))) { targetdata[6] = sourdata[6]; targetdata[7] = sourdata[7]; } } static u8 enable_efuse_data_write(struct ieee80211_hw *hw, u16 efuse_addr, u8 word_en, u8 *data) { struct rtl_priv *rtlpriv = rtl_priv(hw); u16 tmpaddr; u16 start_addr = efuse_addr; u8 badworden = 0x0F; u8 tmpdata[8]; memset(tmpdata, 0xff, PGPKT_DATA_SIZE); rtl_dbg(rtlpriv, COMP_EFUSE, DBG_LOUD, "word_en = %x efuse_addr=%x\n", word_en, efuse_addr); if (!(word_en & BIT(0))) { tmpaddr = start_addr; efuse_one_byte_write(hw, start_addr++, data[0]); efuse_one_byte_write(hw, start_addr++, data[1]); efuse_one_byte_read(hw, tmpaddr, &tmpdata[0]); efuse_one_byte_read(hw, tmpaddr + 1, &tmpdata[1]); if ((data[0] != tmpdata[0]) || (data[1] != tmpdata[1])) badworden &= (~BIT(0)); } if (!(word_en & BIT(1))) { tmpaddr = start_addr; efuse_one_byte_write(hw, start_addr++, data[2]); efuse_one_byte_write(hw, start_addr++, data[3]); efuse_one_byte_read(hw, tmpaddr, &tmpdata[2]); efuse_one_byte_read(hw, tmpaddr + 1, &tmpdata[3]); if ((data[2] != tmpdata[2]) || (data[3] != tmpdata[3])) badworden &= (~BIT(1)); } if (!(word_en & BIT(2))) { tmpaddr = start_addr; efuse_one_byte_write(hw, start_addr++, data[4]); efuse_one_byte_write(hw, start_addr++, data[5]); efuse_one_byte_read(hw, tmpaddr, &tmpdata[4]); efuse_one_byte_read(hw, tmpaddr + 1, &tmpdata[5]); if ((data[4] != tmpdata[4]) || (data[5] != tmpdata[5])) badworden &= (~BIT(2)); } if (!(word_en & BIT(3))) { tmpaddr = start_addr; efuse_one_byte_write(hw, start_addr++, data[6]); efuse_one_byte_write(hw, start_addr++, data[7]); efuse_one_byte_read(hw, tmpaddr, &tmpdata[6]); efuse_one_byte_read(hw, tmpaddr + 1, &tmpdata[7]); if ((data[6] != tmpdata[6]) || (data[7] != tmpdata[7])) badworden &= (~BIT(3)); } return badworden; } void efuse_power_switch(struct ieee80211_hw *hw, u8 write, u8 pwrstate) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); u8 tempval; u16 tmpv16; if (pwrstate && (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE)) { if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192CE && rtlhal->hw_type != HARDWARE_TYPE_RTL8192DE) { rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_ACCESS], 0x69); } else { tmpv16 = rtl_read_word(rtlpriv, rtlpriv->cfg->maps[SYS_ISO_CTRL]); if (!(tmpv16 & rtlpriv->cfg->maps[EFUSE_PWC_EV12V])) { tmpv16 |= rtlpriv->cfg->maps[EFUSE_PWC_EV12V]; rtl_write_word(rtlpriv, rtlpriv->cfg->maps[SYS_ISO_CTRL], tmpv16); } } tmpv16 = rtl_read_word(rtlpriv, rtlpriv->cfg->maps[SYS_FUNC_EN]); if (!(tmpv16 & rtlpriv->cfg->maps[EFUSE_FEN_ELDR])) { tmpv16 |= rtlpriv->cfg->maps[EFUSE_FEN_ELDR]; rtl_write_word(rtlpriv, rtlpriv->cfg->maps[SYS_FUNC_EN], tmpv16); } tmpv16 = rtl_read_word(rtlpriv, rtlpriv->cfg->maps[SYS_CLK]); if ((!(tmpv16 & rtlpriv->cfg->maps[EFUSE_LOADER_CLK_EN])) || (!(tmpv16 & rtlpriv->cfg->maps[EFUSE_ANA8M]))) { tmpv16 |= (rtlpriv->cfg->maps[EFUSE_LOADER_CLK_EN] | rtlpriv->cfg->maps[EFUSE_ANA8M]); rtl_write_word(rtlpriv, rtlpriv->cfg->maps[SYS_CLK], tmpv16); } } if (pwrstate) { if (write) { tempval = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3); if (rtlhal->hw_type == HARDWARE_TYPE_RTL8812AE) { tempval &= ~(BIT(3) | BIT(4) | BIT(5) | BIT(6)); tempval |= (VOLTAGE_V25 << 3); } else if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE) { tempval &= 0x0F; tempval |= (VOLTAGE_V25 << 4); } rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3, (tempval | 0x80)); } if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) { rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CLK], 0x03); } } else { if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192CE && rtlhal->hw_type != HARDWARE_TYPE_RTL8192DE) rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_ACCESS], 0); if (write) { tempval = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3); rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3, (tempval & 0x7F)); } if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) { rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CLK], 0x02); } } } EXPORT_SYMBOL(efuse_power_switch); static u16 efuse_get_current_size(struct ieee80211_hw *hw) { int continual = true; u16 efuse_addr = 0; u8 hworden; u8 efuse_data, word_cnts; while (continual && efuse_one_byte_read(hw, efuse_addr, &efuse_data) && (efuse_addr < EFUSE_MAX_SIZE)) { if (efuse_data != 0xFF) { hworden = efuse_data & 0x0F; word_cnts = efuse_calculate_word_cnts(hworden); efuse_addr = efuse_addr + (word_cnts * 2) + 1; } else { continual = false; } } return efuse_addr; } static u8 efuse_calculate_word_cnts(u8 word_en) { u8 word_cnts = 0; if (!(word_en & BIT(0))) word_cnts++; if (!(word_en & BIT(1))) word_cnts++; if (!(word_en & BIT(2))) word_cnts++; if (!(word_en & BIT(3))) word_cnts++; return word_cnts; } int rtl_get_hwinfo(struct ieee80211_hw *hw, struct rtl_priv *rtlpriv, int max_size, u8 *hwinfo, const int *params) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); struct rtl_pci_priv *rtlpcipriv = rtl_pcipriv(hw); struct device *dev = &rtlpcipriv->dev.pdev->dev; u16 eeprom_id; u16 i, usvalue; switch (rtlefuse->epromtype) { case EEPROM_BOOT_EFUSE: rtl_efuse_shadow_map_update(hw); break; case EEPROM_93C46: pr_err("RTL8XXX did not boot from eeprom, check it !!\n"); return 1; default: dev_warn(dev, "no efuse data\n"); return 1; } memcpy(hwinfo, &rtlefuse->efuse_map[EFUSE_INIT_MAP][0], max_size); RT_PRINT_DATA(rtlpriv, COMP_INIT, DBG_DMESG, "MAP", hwinfo, max_size); eeprom_id = *((u16 *)&hwinfo[0]); if (eeprom_id != params[0]) { rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "EEPROM ID(%#x) is invalid!!\n", eeprom_id); rtlefuse->autoload_failflag = true; } else { rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "Autoload OK\n"); rtlefuse->autoload_failflag = false; } if (rtlefuse->autoload_failflag) return 1; rtlefuse->eeprom_vid = *(u16 *)&hwinfo[params[1]]; rtlefuse->eeprom_did = *(u16 *)&hwinfo[params[2]]; rtlefuse->eeprom_svid = *(u16 *)&hwinfo[params[3]]; rtlefuse->eeprom_smid = *(u16 *)&hwinfo[params[4]]; rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "EEPROMId = 0x%4x\n", eeprom_id); rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "EEPROM VID = 0x%4x\n", rtlefuse->eeprom_vid); rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "EEPROM DID = 0x%4x\n", rtlefuse->eeprom_did); rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "EEPROM SVID = 0x%4x\n", rtlefuse->eeprom_svid); rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "EEPROM SMID = 0x%4x\n", rtlefuse->eeprom_smid); for (i = 0; i < 6; i += 2) { usvalue = *(u16 *)&hwinfo[params[5] + i]; *((u16 *)(&rtlefuse->dev_addr[i])) = usvalue; } rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, "%pM\n", rtlefuse->dev_addr); rtlefuse->eeprom_channelplan = *&hwinfo[params[6]]; rtlefuse->eeprom_version = *(u16 *)&hwinfo[params[7]]; rtlefuse->txpwr_fromeprom = true; rtlefuse->eeprom_oemid = *&hwinfo[params[8]]; rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "EEPROM Customer ID: 0x%2x\n", rtlefuse->eeprom_oemid); /* set channel plan to world wide 13 */ rtlefuse->channel_plan = params[9]; return 0; } EXPORT_SYMBOL_GPL(rtl_get_hwinfo); static void _rtl_fw_block_write_usb(struct ieee80211_hw *hw, u8 *buffer, u32 size) { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 start = START_ADDRESS; u32 n; while (size > 0) { if (size >= 64) n = 64; else if (size >= 8) n = 8; else n = 1; rtl_write_chunk(rtlpriv, start, n, buffer); start += n; buffer += n; size -= n; } } void rtl_fw_block_write(struct ieee80211_hw *hw, u8 *buffer, u32 size) { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 i; if (rtlpriv->rtlhal.interface == INTF_PCI) { for (i = 0; i < size; i++) rtl_write_byte(rtlpriv, (START_ADDRESS + i), *(buffer + i)); } else if (rtlpriv->rtlhal.interface == INTF_USB) { _rtl_fw_block_write_usb(hw, buffer, size); } } EXPORT_SYMBOL_GPL(rtl_fw_block_write); void rtl_fw_page_write(struct ieee80211_hw *hw, u32 page, u8 *buffer, u32 size) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 value8; u8 u8page = (u8)(page & 0x07); value8 = (rtl_read_byte(rtlpriv, REG_MCUFWDL + 2) & 0xF8) | u8page; rtl_write_byte(rtlpriv, (REG_MCUFWDL + 2), value8); rtl_fw_block_write(hw, buffer, size); } EXPORT_SYMBOL_GPL(rtl_fw_page_write); void rtl_fill_dummy(u8 *pfwbuf, u32 *pfwlen) { u32 fwlen = *pfwlen; u8 remain = (u8)(fwlen % 4); remain = (remain == 0) ? 0 : (4 - remain); while (remain > 0) { pfwbuf[fwlen] = 0; fwlen++; remain--; } *pfwlen = fwlen; } EXPORT_SYMBOL_GPL(rtl_fill_dummy); void rtl_efuse_ops_init(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); rtlpriv->efuse.efuse_ops = &efuse_ops; } EXPORT_SYMBOL_GPL(rtl_efuse_ops_init); 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1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 | // SPDX-License-Identifier: GPL-2.0-or-later /* Aquantia Corp. Aquantia AQtion USB to 5GbE Controller * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> * Copyright (C) 2002-2003 TiVo Inc. * Copyright (C) 2017-2018 ASIX * Copyright (C) 2018 Aquantia Corp. */ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/usb.h> #include <linux/crc32.h> #include <linux/if_vlan.h> #include <linux/usb/cdc.h> #include <linux/usb/usbnet.h> #include <linux/linkmode.h> #include "aqc111.h" #define DRIVER_NAME "aqc111" static int aqc111_read_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, void *data) { int ret; ret = usbnet_read_cmd_nopm(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, data, size); if (unlikely(ret < size)) { netdev_warn(dev->net, "Failed to read(0x%x) reg index 0x%04x: %d\n", cmd, index, ret); ret = ret < 0 ? ret : -ENODATA; } return ret; } static int aqc111_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, void *data) { int ret; ret = usbnet_read_cmd(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, data, size); if (unlikely(ret < size)) { netdev_warn(dev->net, "Failed to read(0x%x) reg index 0x%04x: %d\n", cmd, index, ret); ret = ret < 0 ? ret : -ENODATA; } return ret; } static int aqc111_read16_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 *data) { int ret = 0; ret = aqc111_read_cmd_nopm(dev, cmd, value, index, sizeof(*data), data); le16_to_cpus(data); return ret; } static int aqc111_read16_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 *data) { int ret = 0; ret = aqc111_read_cmd(dev, cmd, value, index, sizeof(*data), data); le16_to_cpus(data); return ret; } static int __aqc111_write_cmd(struct usbnet *dev, u8 cmd, u8 reqtype, u16 value, u16 index, u16 size, const void *data) { int err = -ENOMEM; void *buf = NULL; netdev_dbg(dev->net, "%s cmd=%#x reqtype=%#x value=%#x index=%#x size=%d\n", __func__, cmd, reqtype, value, index, size); if (data) { buf = kmemdup(data, size, GFP_KERNEL); if (!buf) goto out; } err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), cmd, reqtype, value, index, buf, size, (cmd == AQ_PHY_POWER) ? AQ_USB_PHY_SET_TIMEOUT : AQ_USB_SET_TIMEOUT); if (unlikely(err < 0)) netdev_warn(dev->net, "Failed to write(0x%x) reg index 0x%04x: %d\n", cmd, index, err); kfree(buf); out: return err; } static int aqc111_write_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, void *data) { int ret; ret = __aqc111_write_cmd(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, size, data); return ret; } static int aqc111_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, const void *data) { int ret; if (usb_autopm_get_interface(dev->intf) < 0) return -ENODEV; ret = __aqc111_write_cmd(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, size, data); usb_autopm_put_interface(dev->intf); return ret; } static int aqc111_write16_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 *data) { u16 tmp = *data; cpu_to_le16s(&tmp); return aqc111_write_cmd_nopm(dev, cmd, value, index, sizeof(tmp), &tmp); } static int aqc111_write16_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 *data) { u16 tmp = *data; cpu_to_le16s(&tmp); return aqc111_write_cmd(dev, cmd, value, index, sizeof(tmp), &tmp); } static int aqc111_write32_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value, u16 index, u32 *data) { u32 tmp = *data; cpu_to_le32s(&tmp); return aqc111_write_cmd_nopm(dev, cmd, value, index, sizeof(tmp), &tmp); } static int aqc111_write32_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, u32 *data) { u32 tmp = *data; cpu_to_le32s(&tmp); return aqc111_write_cmd(dev, cmd, value, index, sizeof(tmp), &tmp); } static int aqc111_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, void *data) { return usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, data, size); } static int aqc111_write16_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 *data) { u16 tmp = *data; cpu_to_le16s(&tmp); return aqc111_write_cmd_async(dev, cmd, value, index, sizeof(tmp), &tmp); } static void aqc111_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) { struct usbnet *dev = netdev_priv(net); struct aqc111_data *aqc111_data = dev->driver_priv; /* Inherit standard device info */ usbnet_get_drvinfo(net, info); strscpy(info->driver, DRIVER_NAME, sizeof(info->driver)); snprintf(info->fw_version, sizeof(info->fw_version), "%u.%u.%u", aqc111_data->fw_ver.major, aqc111_data->fw_ver.minor, aqc111_data->fw_ver.rev); info->eedump_len = 0x00; info->regdump_len = 0x00; } static void aqc111_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) { struct usbnet *dev = netdev_priv(net); struct aqc111_data *aqc111_data = dev->driver_priv; wolinfo->supported = WAKE_MAGIC; wolinfo->wolopts = 0; if (aqc111_data->wol_flags & AQ_WOL_FLAG_MP) wolinfo->wolopts |= WAKE_MAGIC; } static int aqc111_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) { struct usbnet *dev = netdev_priv(net); struct aqc111_data *aqc111_data = dev->driver_priv; if (wolinfo->wolopts & ~WAKE_MAGIC) return -EINVAL; aqc111_data->wol_flags = 0; if (wolinfo->wolopts & WAKE_MAGIC) aqc111_data->wol_flags |= AQ_WOL_FLAG_MP; return 0; } static void aqc111_speed_to_link_mode(u32 speed, struct ethtool_link_ksettings *elk) { switch (speed) { case SPEED_5000: ethtool_link_ksettings_add_link_mode(elk, advertising, 5000baseT_Full); break; case SPEED_2500: ethtool_link_ksettings_add_link_mode(elk, advertising, 2500baseT_Full); break; case SPEED_1000: ethtool_link_ksettings_add_link_mode(elk, advertising, 1000baseT_Full); break; case SPEED_100: ethtool_link_ksettings_add_link_mode(elk, advertising, 100baseT_Full); break; } } static int aqc111_get_link_ksettings(struct net_device *net, struct ethtool_link_ksettings *elk) { struct usbnet *dev = netdev_priv(net); struct aqc111_data *aqc111_data = dev->driver_priv; enum usb_device_speed usb_speed = dev->udev->speed; u32 speed = SPEED_UNKNOWN; ethtool_link_ksettings_zero_link_mode(elk, supported); ethtool_link_ksettings_add_link_mode(elk, supported, 100baseT_Full); ethtool_link_ksettings_add_link_mode(elk, supported, 1000baseT_Full); if (usb_speed == USB_SPEED_SUPER) { ethtool_link_ksettings_add_link_mode(elk, supported, 2500baseT_Full); ethtool_link_ksettings_add_link_mode(elk, supported, 5000baseT_Full); } ethtool_link_ksettings_add_link_mode(elk, supported, TP); ethtool_link_ksettings_add_link_mode(elk, supported, Autoneg); elk->base.port = PORT_TP; elk->base.transceiver = XCVR_INTERNAL; elk->base.mdio_support = 0x00; /*Not supported*/ if (aqc111_data->autoneg) linkmode_copy(elk->link_modes.advertising, elk->link_modes.supported); else aqc111_speed_to_link_mode(aqc111_data->advertised_speed, elk); elk->base.autoneg = aqc111_data->autoneg; switch (aqc111_data->link_speed) { case AQ_INT_SPEED_5G: speed = SPEED_5000; break; case AQ_INT_SPEED_2_5G: speed = SPEED_2500; break; case AQ_INT_SPEED_1G: speed = SPEED_1000; break; case AQ_INT_SPEED_100M: speed = SPEED_100; break; } elk->base.duplex = DUPLEX_FULL; elk->base.speed = speed; return 0; } static void aqc111_set_phy_speed(struct usbnet *dev, u8 autoneg, u16 speed) { struct aqc111_data *aqc111_data = dev->driver_priv; aqc111_data->phy_cfg &= ~AQ_ADV_MASK; aqc111_data->phy_cfg |= AQ_PAUSE; aqc111_data->phy_cfg |= AQ_ASYM_PAUSE; aqc111_data->phy_cfg |= AQ_DOWNSHIFT; aqc111_data->phy_cfg &= ~AQ_DSH_RETRIES_MASK; aqc111_data->phy_cfg |= (3 << AQ_DSH_RETRIES_SHIFT) & AQ_DSH_RETRIES_MASK; if (autoneg == AUTONEG_ENABLE) { switch (speed) { case SPEED_5000: aqc111_data->phy_cfg |= AQ_ADV_5G; fallthrough; case SPEED_2500: aqc111_data->phy_cfg |= AQ_ADV_2G5; fallthrough; case SPEED_1000: aqc111_data->phy_cfg |= AQ_ADV_1G; fallthrough; case SPEED_100: aqc111_data->phy_cfg |= AQ_ADV_100M; /* fall-through */ } } else { switch (speed) { case SPEED_5000: aqc111_data->phy_cfg |= AQ_ADV_5G; break; case SPEED_2500: aqc111_data->phy_cfg |= AQ_ADV_2G5; break; case SPEED_1000: aqc111_data->phy_cfg |= AQ_ADV_1G; break; case SPEED_100: aqc111_data->phy_cfg |= AQ_ADV_100M; break; } } aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); } static int aqc111_set_link_ksettings(struct net_device *net, const struct ethtool_link_ksettings *elk) { struct usbnet *dev = netdev_priv(net); struct aqc111_data *aqc111_data = dev->driver_priv; enum usb_device_speed usb_speed = dev->udev->speed; u8 autoneg = elk->base.autoneg; u32 speed = elk->base.speed; if (autoneg == AUTONEG_ENABLE) { if (aqc111_data->autoneg != AUTONEG_ENABLE) { aqc111_data->autoneg = AUTONEG_ENABLE; aqc111_data->advertised_speed = (usb_speed == USB_SPEED_SUPER) ? SPEED_5000 : SPEED_1000; aqc111_set_phy_speed(dev, aqc111_data->autoneg, aqc111_data->advertised_speed); } } else { if (speed != SPEED_100 && speed != SPEED_1000 && speed != SPEED_2500 && speed != SPEED_5000 && speed != SPEED_UNKNOWN) return -EINVAL; if (elk->base.duplex != DUPLEX_FULL) return -EINVAL; if (usb_speed != USB_SPEED_SUPER && speed > SPEED_1000) return -EINVAL; aqc111_data->autoneg = AUTONEG_DISABLE; if (speed != SPEED_UNKNOWN) aqc111_data->advertised_speed = speed; aqc111_set_phy_speed(dev, aqc111_data->autoneg, aqc111_data->advertised_speed); } return 0; } static const struct ethtool_ops aqc111_ethtool_ops = { .get_drvinfo = aqc111_get_drvinfo, .get_wol = aqc111_get_wol, .set_wol = aqc111_set_wol, .get_msglevel = usbnet_get_msglevel, .set_msglevel = usbnet_set_msglevel, .get_link = ethtool_op_get_link, .get_link_ksettings = aqc111_get_link_ksettings, .set_link_ksettings = aqc111_set_link_ksettings }; static int aqc111_change_mtu(struct net_device *net, int new_mtu) { struct usbnet *dev = netdev_priv(net); u16 reg16 = 0; u8 buf[5]; WRITE_ONCE(net->mtu, new_mtu); dev->hard_mtu = net->mtu + net->hard_header_len; aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); if (net->mtu > 1500) reg16 |= SFR_MEDIUM_JUMBO_EN; else reg16 &= ~SFR_MEDIUM_JUMBO_EN; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); if (dev->net->mtu > 12500) { memcpy(buf, &AQC111_BULKIN_SIZE[2], 5); /* RX bulk configuration */ aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, 5, 5, buf); } /* Set high low water level */ if (dev->net->mtu <= 4500) reg16 = 0x0810; else if (dev->net->mtu <= 9500) reg16 = 0x1020; else if (dev->net->mtu <= 12500) reg16 = 0x1420; else reg16 = 0x1A20; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW, 2, ®16); return 0; } static int aqc111_set_mac_addr(struct net_device *net, void *p) { struct usbnet *dev = netdev_priv(net); int ret = 0; ret = eth_mac_addr(net, p); if (ret < 0) return ret; /* Set the MAC address */ return aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_NODE_ID, ETH_ALEN, ETH_ALEN, net->dev_addr); } static int aqc111_vlan_rx_kill_vid(struct net_device *net, __be16 proto, u16 vid) { struct usbnet *dev = netdev_priv(net); u8 vlan_ctrl = 0; u16 reg16 = 0; u8 reg8 = 0; aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); vlan_ctrl = reg8; /* Address */ reg8 = (vid / 16); aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_ADDRESS, 1, 1, ®8); /* Data */ reg8 = vlan_ctrl | SFR_VLAN_CONTROL_RD; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, ®16); reg16 &= ~(1 << (vid % 16)); aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, ®16); reg8 = vlan_ctrl | SFR_VLAN_CONTROL_WE; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); return 0; } static int aqc111_vlan_rx_add_vid(struct net_device *net, __be16 proto, u16 vid) { struct usbnet *dev = netdev_priv(net); u8 vlan_ctrl = 0; u16 reg16 = 0; u8 reg8 = 0; aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); vlan_ctrl = reg8; /* Address */ reg8 = (vid / 16); aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_ADDRESS, 1, 1, ®8); /* Data */ reg8 = vlan_ctrl | SFR_VLAN_CONTROL_RD; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, ®16); reg16 |= (1 << (vid % 16)); aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, ®16); reg8 = vlan_ctrl | SFR_VLAN_CONTROL_WE; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); return 0; } static void aqc111_set_rx_mode(struct net_device *net) { struct usbnet *dev = netdev_priv(net); struct aqc111_data *aqc111_data = dev->driver_priv; int mc_count = 0; mc_count = netdev_mc_count(net); aqc111_data->rxctl &= ~(SFR_RX_CTL_PRO | SFR_RX_CTL_AMALL | SFR_RX_CTL_AM); if (net->flags & IFF_PROMISC) { aqc111_data->rxctl |= SFR_RX_CTL_PRO; } else if ((net->flags & IFF_ALLMULTI) || mc_count > AQ_MAX_MCAST) { aqc111_data->rxctl |= SFR_RX_CTL_AMALL; } else if (!netdev_mc_empty(net)) { u8 m_filter[AQ_MCAST_FILTER_SIZE] = { 0 }; struct netdev_hw_addr *ha = NULL; u32 crc_bits = 0; netdev_for_each_mc_addr(ha, net) { crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; m_filter[crc_bits >> 3] |= BIT(crc_bits & 7); } aqc111_write_cmd_async(dev, AQ_ACCESS_MAC, SFR_MULTI_FILTER_ARRY, AQ_MCAST_FILTER_SIZE, AQ_MCAST_FILTER_SIZE, m_filter); aqc111_data->rxctl |= SFR_RX_CTL_AM; } aqc111_write16_cmd_async(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &aqc111_data->rxctl); } static int aqc111_set_features(struct net_device *net, netdev_features_t features) { struct usbnet *dev = netdev_priv(net); struct aqc111_data *aqc111_data = dev->driver_priv; netdev_features_t changed = net->features ^ features; u16 reg16 = 0; u8 reg8 = 0; if (changed & NETIF_F_IP_CSUM) { aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, ®8); reg8 ^= SFR_TXCOE_TCP | SFR_TXCOE_UDP; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, ®8); } if (changed & NETIF_F_IPV6_CSUM) { aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, ®8); reg8 ^= SFR_TXCOE_TCPV6 | SFR_TXCOE_UDPV6; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, ®8); } if (changed & NETIF_F_RXCSUM) { aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL, 1, 1, ®8); if (features & NETIF_F_RXCSUM) { aqc111_data->rx_checksum = 1; reg8 &= ~(SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP | SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6); } else { aqc111_data->rx_checksum = 0; reg8 |= SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP | SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6; } aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL, 1, 1, ®8); } if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) { if (features & NETIF_F_HW_VLAN_CTAG_FILTER) { u16 i = 0; for (i = 0; i < 256; i++) { /* Address */ reg8 = i; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_ADDRESS, 1, 1, ®8); /* Data */ aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, ®16); reg8 = SFR_VLAN_CONTROL_WE; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); } aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); reg8 |= SFR_VLAN_CONTROL_VFE; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); } else { aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); reg8 &= ~SFR_VLAN_CONTROL_VFE; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); } } return 0; } static const struct net_device_ops aqc111_netdev_ops = { .ndo_open = usbnet_open, .ndo_stop = usbnet_stop, .ndo_start_xmit = usbnet_start_xmit, .ndo_tx_timeout = usbnet_tx_timeout, .ndo_get_stats64 = dev_get_tstats64, .ndo_change_mtu = aqc111_change_mtu, .ndo_set_mac_address = aqc111_set_mac_addr, .ndo_validate_addr = eth_validate_addr, .ndo_vlan_rx_add_vid = aqc111_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = aqc111_vlan_rx_kill_vid, .ndo_set_rx_mode = aqc111_set_rx_mode, .ndo_set_features = aqc111_set_features, }; static int aqc111_read_perm_mac(struct usbnet *dev) { u8 buf[ETH_ALEN]; int ret; ret = aqc111_read_cmd(dev, AQ_FLASH_PARAMETERS, 0, 0, ETH_ALEN, buf); if (ret < 0) goto out; ether_addr_copy(dev->net->perm_addr, buf); return 0; out: return ret; } static void aqc111_read_fw_version(struct usbnet *dev, struct aqc111_data *aqc111_data) { aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MAJOR, 1, 1, &aqc111_data->fw_ver.major); aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MINOR, 1, 1, &aqc111_data->fw_ver.minor); aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_REV, 1, 1, &aqc111_data->fw_ver.rev); if (aqc111_data->fw_ver.major & 0x80) aqc111_data->fw_ver.major &= ~0x80; } static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf) { struct usb_device *udev = interface_to_usbdev(intf); enum usb_device_speed usb_speed = udev->speed; struct aqc111_data *aqc111_data; int ret; /* Check if vendor configuration */ if (udev->actconfig->desc.bConfigurationValue != 1) { usb_driver_set_configuration(udev, 1); return -ENODEV; } usb_reset_configuration(dev->udev); ret = usbnet_get_endpoints(dev, intf); if (ret < 0) { netdev_dbg(dev->net, "usbnet_get_endpoints failed"); return ret; } aqc111_data = kzalloc(sizeof(*aqc111_data), GFP_KERNEL); if (!aqc111_data) return -ENOMEM; /* store aqc111_data pointer in device data field */ dev->driver_priv = aqc111_data; /* Init the MAC address */ ret = aqc111_read_perm_mac(dev); if (ret) goto out; eth_hw_addr_set(dev->net, dev->net->perm_addr); /* Set Rx urb size */ dev->rx_urb_size = URB_SIZE; /* Set TX needed headroom & tailroom */ dev->net->needed_headroom += sizeof(u64); dev->net->needed_tailroom += sizeof(u64); dev->net->max_mtu = 16334; dev->net->netdev_ops = &aqc111_netdev_ops; dev->net->ethtool_ops = &aqc111_ethtool_ops; if (usb_device_no_sg_constraint(dev->udev)) dev->can_dma_sg = 1; dev->net->hw_features |= AQ_SUPPORT_HW_FEATURE; dev->net->features |= AQ_SUPPORT_FEATURE; dev->net->vlan_features |= AQ_SUPPORT_VLAN_FEATURE; netif_set_tso_max_size(dev->net, 65535); aqc111_read_fw_version(dev, aqc111_data); aqc111_data->autoneg = AUTONEG_ENABLE; aqc111_data->advertised_speed = (usb_speed == USB_SPEED_SUPER) ? SPEED_5000 : SPEED_1000; return 0; out: kfree(aqc111_data); return ret; } static void aqc111_unbind(struct usbnet *dev, struct usb_interface *intf) { struct aqc111_data *aqc111_data = dev->driver_priv; u16 reg16; /* Force bz */ reg16 = SFR_PHYPWR_RSTCTL_BZ; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL, 2, ®16); reg16 = 0; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL, 2, ®16); /* Power down ethernet PHY */ aqc111_data->phy_cfg &= ~AQ_ADV_MASK; aqc111_data->phy_cfg |= AQ_LOW_POWER; aqc111_data->phy_cfg &= ~AQ_PHY_POWER_EN; aqc111_write32_cmd_nopm(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); kfree(aqc111_data); } static void aqc111_status(struct usbnet *dev, struct urb *urb) { struct aqc111_data *aqc111_data = dev->driver_priv; u64 *event_data = NULL; int link = 0; if (urb->actual_length < sizeof(*event_data)) return; event_data = urb->transfer_buffer; le64_to_cpus(event_data); if (*event_data & AQ_LS_MASK) link = 1; else link = 0; aqc111_data->link_speed = (*event_data & AQ_SPEED_MASK) >> AQ_SPEED_SHIFT; aqc111_data->link = link; if (netif_carrier_ok(dev->net) != link) usbnet_defer_kevent(dev, EVENT_LINK_RESET); } static void aqc111_configure_rx(struct usbnet *dev, struct aqc111_data *aqc111_data) { enum usb_device_speed usb_speed = dev->udev->speed; u16 link_speed = 0, usb_host = 0; u8 buf[5] = { 0 }; u8 queue_num = 0; u16 reg16 = 0; u8 reg8 = 0; buf[0] = 0x00; buf[1] = 0xF8; buf[2] = 0x07; switch (aqc111_data->link_speed) { case AQ_INT_SPEED_5G: link_speed = 5000; reg8 = 0x05; reg16 = 0x001F; break; case AQ_INT_SPEED_2_5G: link_speed = 2500; reg16 = 0x003F; break; case AQ_INT_SPEED_1G: link_speed = 1000; reg16 = 0x009F; break; case AQ_INT_SPEED_100M: link_speed = 100; queue_num = 1; reg16 = 0x063F; buf[1] = 0xFB; buf[2] = 0x4; break; } aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_INTER_PACKET_GAP_0, 1, 1, ®8); aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TX_PAUSE_RESEND_T, 3, 3, buf); switch (usb_speed) { case USB_SPEED_SUPER: usb_host = 3; break; case USB_SPEED_HIGH: usb_host = 2; break; case USB_SPEED_FULL: case USB_SPEED_LOW: usb_host = 1; queue_num = 0; break; default: usb_host = 0; break; } if (dev->net->mtu > 12500 && dev->net->mtu <= 16334) queue_num = 2; /* For Jumbo packet 16KB */ memcpy(buf, &AQC111_BULKIN_SIZE[queue_num], 5); /* RX bulk configuration */ aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, 5, 5, buf); /* Set high low water level */ if (dev->net->mtu <= 4500) reg16 = 0x0810; else if (dev->net->mtu <= 9500) reg16 = 0x1020; else if (dev->net->mtu <= 12500) reg16 = 0x1420; else if (dev->net->mtu <= 16334) reg16 = 0x1A20; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW, 2, ®16); netdev_info(dev->net, "Link Speed %d, USB %d", link_speed, usb_host); } static void aqc111_configure_csum_offload(struct usbnet *dev) { u8 reg8 = 0; if (dev->net->features & NETIF_F_RXCSUM) { reg8 |= SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP | SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6; } aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL, 1, 1, ®8); reg8 = 0; if (dev->net->features & NETIF_F_IP_CSUM) reg8 |= SFR_TXCOE_IP | SFR_TXCOE_TCP | SFR_TXCOE_UDP; if (dev->net->features & NETIF_F_IPV6_CSUM) reg8 |= SFR_TXCOE_TCPV6 | SFR_TXCOE_UDPV6; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, ®8); } static int aqc111_link_reset(struct usbnet *dev) { struct aqc111_data *aqc111_data = dev->driver_priv; u16 reg16 = 0; u8 reg8 = 0; if (aqc111_data->link == 1) { /* Link up */ aqc111_configure_rx(dev, aqc111_data); /* Vlan Tag Filter */ reg8 = SFR_VLAN_CONTROL_VSO; if (dev->net->features & NETIF_F_HW_VLAN_CTAG_FILTER) reg8 |= SFR_VLAN_CONTROL_VFE; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, ®8); reg8 = 0x0; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL, 1, 1, ®8); aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMTX_DMA_CONTROL, 1, 1, ®8); aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ARC_CTRL, 1, 1, ®8); reg16 = SFR_RX_CTL_IPE | SFR_RX_CTL_AB; aqc111_data->rxctl = reg16; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); reg8 = SFR_RX_PATH_READY; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH, 1, 1, ®8); reg8 = SFR_BULK_OUT_EFF_EN; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL, 1, 1, ®8); reg16 = 0; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg16 = SFR_MEDIUM_XGMIIMODE | SFR_MEDIUM_FULL_DUPLEX; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); aqc111_configure_csum_offload(dev); aqc111_set_rx_mode(dev->net); aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); if (dev->net->mtu > 1500) reg16 |= SFR_MEDIUM_JUMBO_EN; reg16 |= SFR_MEDIUM_RECEIVE_EN | SFR_MEDIUM_RXFLOW_CTRLEN | SFR_MEDIUM_TXFLOW_CTRLEN; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); aqc111_data->rxctl |= SFR_RX_CTL_START; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &aqc111_data->rxctl); netif_carrier_on(dev->net); } else { aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg16 &= ~SFR_MEDIUM_RECEIVE_EN; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); aqc111_data->rxctl &= ~SFR_RX_CTL_START; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &aqc111_data->rxctl); reg8 = SFR_BULK_OUT_FLUSH_EN | SFR_BULK_OUT_EFF_EN; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL, 1, 1, ®8); reg8 = SFR_BULK_OUT_EFF_EN; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL, 1, 1, ®8); netif_carrier_off(dev->net); } return 0; } static int aqc111_reset(struct usbnet *dev) { struct aqc111_data *aqc111_data = dev->driver_priv; u8 reg8 = 0; dev->rx_urb_size = URB_SIZE; if (usb_device_no_sg_constraint(dev->udev)) dev->can_dma_sg = 1; dev->net->hw_features |= AQ_SUPPORT_HW_FEATURE; dev->net->features |= AQ_SUPPORT_FEATURE; dev->net->vlan_features |= AQ_SUPPORT_VLAN_FEATURE; /* Power up ethernet PHY */ aqc111_data->phy_cfg = AQ_PHY_POWER_EN; aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); /* Set the MAC address */ aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_NODE_ID, ETH_ALEN, ETH_ALEN, dev->net->dev_addr); reg8 = 0xFF; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK, 1, 1, ®8); reg8 = 0x0; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_SWP_CTRL, 1, 1, ®8); aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_MONITOR_MODE, 1, 1, ®8); reg8 &= ~(SFR_MONITOR_MODE_EPHYRW | SFR_MONITOR_MODE_RWLC | SFR_MONITOR_MODE_RWMP | SFR_MONITOR_MODE_RWWF | SFR_MONITOR_MODE_RW_FLAG); aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_MONITOR_MODE, 1, 1, ®8); netif_carrier_off(dev->net); /* Phy advertise */ aqc111_set_phy_speed(dev, aqc111_data->autoneg, aqc111_data->advertised_speed); return 0; } static int aqc111_stop(struct usbnet *dev) { struct aqc111_data *aqc111_data = dev->driver_priv; u16 reg16 = 0; aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg16 &= ~SFR_MEDIUM_RECEIVE_EN; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg16 = 0; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); /* Put PHY to low power*/ aqc111_data->phy_cfg |= AQ_LOW_POWER; aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); netif_carrier_off(dev->net); return 0; } static void aqc111_rx_checksum(struct sk_buff *skb, u64 pkt_desc) { u32 pkt_type = 0; skb->ip_summed = CHECKSUM_NONE; /* checksum error bit is set */ if (pkt_desc & AQ_RX_PD_L4_ERR || pkt_desc & AQ_RX_PD_L3_ERR) return; pkt_type = pkt_desc & AQ_RX_PD_L4_TYPE_MASK; /* It must be a TCP or UDP packet with a valid checksum */ if (pkt_type == AQ_RX_PD_L4_TCP || pkt_type == AQ_RX_PD_L4_UDP) skb->ip_summed = CHECKSUM_UNNECESSARY; } static int aqc111_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { struct aqc111_data *aqc111_data = dev->driver_priv; struct sk_buff *new_skb = NULL; u32 pkt_total_offset = 0; u64 *pkt_desc_ptr = NULL; u32 start_of_descs = 0; u32 desc_offset = 0; /*RX Header Offset*/ u16 pkt_count = 0; u64 desc_hdr = 0; u16 vlan_tag = 0; u32 skb_len; if (!skb) goto err; skb_len = skb->len; if (skb_len < sizeof(desc_hdr)) goto err; /* RX Descriptor Header */ skb_trim(skb, skb_len - sizeof(desc_hdr)); desc_hdr = le64_to_cpup((u64 *)skb_tail_pointer(skb)); /* Check these packets */ desc_offset = (desc_hdr & AQ_RX_DH_DESC_OFFSET_MASK) >> AQ_RX_DH_DESC_OFFSET_SHIFT; pkt_count = desc_hdr & AQ_RX_DH_PKT_CNT_MASK; start_of_descs = skb_len - ((pkt_count + 1) * sizeof(desc_hdr)); /* self check descs position */ if (start_of_descs != desc_offset) goto err; /* self check desc_offset from header and make sure that the * bounds of the metadata array are inside the SKB */ if (pkt_count * 2 + desc_offset >= skb_len) goto err; /* Packets must not overlap the metadata array */ skb_trim(skb, desc_offset); if (pkt_count == 0) goto err; /* Get the first RX packet descriptor */ pkt_desc_ptr = (u64 *)(skb->data + desc_offset); while (pkt_count--) { u64 pkt_desc = le64_to_cpup(pkt_desc_ptr); u32 pkt_len_with_padd = 0; u32 pkt_len = 0; pkt_len = (u32)((pkt_desc & AQ_RX_PD_LEN_MASK) >> AQ_RX_PD_LEN_SHIFT); pkt_len_with_padd = ((pkt_len + 7) & 0x7FFF8); pkt_total_offset += pkt_len_with_padd; if (pkt_total_offset > desc_offset || (pkt_count == 0 && pkt_total_offset != desc_offset)) { goto err; } if (pkt_desc & AQ_RX_PD_DROP || !(pkt_desc & AQ_RX_PD_RX_OK) || pkt_len > (dev->hard_mtu + AQ_RX_HW_PAD)) { skb_pull(skb, pkt_len_with_padd); /* Next RX Packet Descriptor */ pkt_desc_ptr++; continue; } new_skb = netdev_alloc_skb_ip_align(dev->net, pkt_len); if (!new_skb) goto err; skb_put(new_skb, pkt_len); memcpy(new_skb->data, skb->data, pkt_len); skb_pull(new_skb, AQ_RX_HW_PAD); if (aqc111_data->rx_checksum) aqc111_rx_checksum(new_skb, pkt_desc); if (pkt_desc & AQ_RX_PD_VLAN) { vlan_tag = pkt_desc >> AQ_RX_PD_VLAN_SHIFT; __vlan_hwaccel_put_tag(new_skb, htons(ETH_P_8021Q), vlan_tag & VLAN_VID_MASK); } usbnet_skb_return(dev, new_skb); if (pkt_count == 0) break; skb_pull(skb, pkt_len_with_padd); /* Next RX Packet Header */ pkt_desc_ptr++; new_skb = NULL; } return 1; err: return 0; } static struct sk_buff *aqc111_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { int frame_size = dev->maxpacket; struct sk_buff *new_skb = NULL; u64 *tx_desc_ptr = NULL; int padding_size = 0; int headroom = 0; int tailroom = 0; u64 tx_desc = 0; u16 tci = 0; /*Length of actual data*/ tx_desc |= skb->len & AQ_TX_DESC_LEN_MASK; /* TSO MSS */ tx_desc |= ((u64)(skb_shinfo(skb)->gso_size & AQ_TX_DESC_MSS_MASK)) << AQ_TX_DESC_MSS_SHIFT; headroom = (skb->len + sizeof(tx_desc)) % 8; if (headroom != 0) padding_size = 8 - headroom; if (((skb->len + sizeof(tx_desc) + padding_size) % frame_size) == 0) { padding_size += 8; tx_desc |= AQ_TX_DESC_DROP_PADD; } /* Vlan Tag */ if (vlan_get_tag(skb, &tci) >= 0) { tx_desc |= AQ_TX_DESC_VLAN; tx_desc |= ((u64)tci & AQ_TX_DESC_VLAN_MASK) << AQ_TX_DESC_VLAN_SHIFT; } if (!dev->can_dma_sg && (dev->net->features & NETIF_F_SG) && skb_linearize(skb)) return NULL; headroom = skb_headroom(skb); tailroom = skb_tailroom(skb); if (!(headroom >= sizeof(tx_desc) && tailroom >= padding_size)) { new_skb = skb_copy_expand(skb, sizeof(tx_desc), padding_size, flags); dev_kfree_skb_any(skb); skb = new_skb; if (!skb) return NULL; } if (padding_size != 0) skb_put_zero(skb, padding_size); /* Copy TX header */ tx_desc_ptr = skb_push(skb, sizeof(tx_desc)); *tx_desc_ptr = cpu_to_le64(tx_desc); usbnet_set_skb_tx_stats(skb, 1, 0); return skb; } static const struct driver_info aqc111_info = { .description = "Aquantia AQtion USB to 5GbE Controller", .bind = aqc111_bind, .unbind = aqc111_unbind, .status = aqc111_status, .link_reset = aqc111_link_reset, .reset = aqc111_reset, .stop = aqc111_stop, .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET, .rx_fixup = aqc111_rx_fixup, .tx_fixup = aqc111_tx_fixup, }; #define ASIX111_DESC \ "ASIX USB 3.1 Gen1 to 5G Multi-Gigabit Ethernet Adapter" static const struct driver_info asix111_info = { .description = ASIX111_DESC, .bind = aqc111_bind, .unbind = aqc111_unbind, .status = aqc111_status, .link_reset = aqc111_link_reset, .reset = aqc111_reset, .stop = aqc111_stop, .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET, .rx_fixup = aqc111_rx_fixup, .tx_fixup = aqc111_tx_fixup, }; #undef ASIX111_DESC #define ASIX112_DESC \ "ASIX USB 3.1 Gen1 to 2.5G Multi-Gigabit Ethernet Adapter" static const struct driver_info asix112_info = { .description = ASIX112_DESC, .bind = aqc111_bind, .unbind = aqc111_unbind, .status = aqc111_status, .link_reset = aqc111_link_reset, .reset = aqc111_reset, .stop = aqc111_stop, .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET, .rx_fixup = aqc111_rx_fixup, .tx_fixup = aqc111_tx_fixup, }; #undef ASIX112_DESC static const struct driver_info trendnet_info = { .description = "USB-C 3.1 to 5GBASE-T Ethernet Adapter", .bind = aqc111_bind, .unbind = aqc111_unbind, .status = aqc111_status, .link_reset = aqc111_link_reset, .reset = aqc111_reset, .stop = aqc111_stop, .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET, .rx_fixup = aqc111_rx_fixup, .tx_fixup = aqc111_tx_fixup, }; static const struct driver_info qnap_info = { .description = "QNAP QNA-UC5G1T USB to 5GbE Adapter", .bind = aqc111_bind, .unbind = aqc111_unbind, .status = aqc111_status, .link_reset = aqc111_link_reset, .reset = aqc111_reset, .stop = aqc111_stop, .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET, .rx_fixup = aqc111_rx_fixup, .tx_fixup = aqc111_tx_fixup, }; static int aqc111_suspend(struct usb_interface *intf, pm_message_t message) { struct usbnet *dev = usb_get_intfdata(intf); struct aqc111_data *aqc111_data = dev->driver_priv; u16 temp_rx_ctrl = 0x00; u16 reg16; u8 reg8; usbnet_suspend(intf, message); aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); temp_rx_ctrl = reg16; /* Stop RX operations*/ reg16 &= ~SFR_RX_CTL_START; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); /* Force bz */ aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL, 2, ®16); reg16 |= SFR_PHYPWR_RSTCTL_BZ; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL, 2, ®16); reg8 = SFR_BULK_OUT_EFF_EN; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL, 1, 1, ®8); temp_rx_ctrl &= ~(SFR_RX_CTL_START | SFR_RX_CTL_RF_WAK | SFR_RX_CTL_AP | SFR_RX_CTL_AM); aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &temp_rx_ctrl); reg8 = 0x00; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH, 1, 1, ®8); if (aqc111_data->wol_flags) { struct aqc111_wol_cfg wol_cfg; memset(&wol_cfg, 0, sizeof(struct aqc111_wol_cfg)); aqc111_data->phy_cfg |= AQ_WOL; ether_addr_copy(wol_cfg.hw_addr, dev->net->dev_addr); wol_cfg.flags = aqc111_data->wol_flags; temp_rx_ctrl |= (SFR_RX_CTL_AB | SFR_RX_CTL_START); aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &temp_rx_ctrl); reg8 = 0x00; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK, 1, 1, ®8); reg8 = SFR_BMRX_DMA_EN; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL, 1, 1, ®8); reg8 = SFR_RX_PATH_READY; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH, 1, 1, ®8); reg8 = 0x07; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, 1, 1, ®8); reg8 = 0x00; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QTIMR_LOW, 1, 1, ®8); aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QTIMR_HIGH, 1, 1, ®8); reg8 = 0xFF; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QSIZE, 1, 1, ®8); aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QIFG, 1, 1, ®8); aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg16 |= SFR_MEDIUM_RECEIVE_EN; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); aqc111_write_cmd(dev, AQ_WOL_CFG, 0, 0, WOL_CFG_SIZE, &wol_cfg); aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); } else { aqc111_data->phy_cfg |= AQ_LOW_POWER; aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); /* Disable RX path */ aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg16 &= ~SFR_MEDIUM_RECEIVE_EN; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); } return 0; } static int aqc111_resume(struct usb_interface *intf) { struct usbnet *dev = usb_get_intfdata(intf); struct aqc111_data *aqc111_data = dev->driver_priv; u16 reg16; u8 reg8; netif_carrier_off(dev->net); /* Power up ethernet PHY */ aqc111_data->phy_cfg |= AQ_PHY_POWER_EN; aqc111_data->phy_cfg &= ~AQ_LOW_POWER; aqc111_data->phy_cfg &= ~AQ_WOL; reg8 = 0xFF; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK, 1, 1, ®8); /* Configure RX control register => start operation */ reg16 = aqc111_data->rxctl; reg16 &= ~SFR_RX_CTL_START; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); reg16 |= SFR_RX_CTL_START; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); aqc111_set_phy_speed(dev, aqc111_data->autoneg, aqc111_data->advertised_speed); aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg16 |= SFR_MEDIUM_RECEIVE_EN; aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); reg8 = SFR_RX_PATH_READY; aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH, 1, 1, ®8); reg8 = 0x0; aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL, 1, 1, ®8); return usbnet_resume(intf); } #define AQC111_USB_ETH_DEV(vid, pid, table) \ USB_DEVICE_INTERFACE_CLASS((vid), (pid), USB_CLASS_VENDOR_SPEC), \ .driver_info = (unsigned long)&(table) \ }, \ { \ USB_DEVICE_AND_INTERFACE_INFO((vid), (pid), \ USB_CLASS_COMM, \ USB_CDC_SUBCLASS_ETHERNET, \ USB_CDC_PROTO_NONE), \ .driver_info = (unsigned long)&(table), static const struct usb_device_id products[] = { {AQC111_USB_ETH_DEV(0x2eca, 0xc101, aqc111_info)}, {AQC111_USB_ETH_DEV(0x0b95, 0x2790, asix111_info)}, {AQC111_USB_ETH_DEV(0x0b95, 0x2791, asix112_info)}, {AQC111_USB_ETH_DEV(0x20f4, 0xe05a, trendnet_info)}, {AQC111_USB_ETH_DEV(0x1c04, 0x0015, qnap_info)}, { },/* END */ }; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver aq_driver = { .name = "aqc111", .id_table = products, .probe = usbnet_probe, .suspend = aqc111_suspend, .resume = aqc111_resume, .disconnect = usbnet_disconnect, }; module_usb_driver(aq_driver); MODULE_DESCRIPTION("Aquantia AQtion USB to 5/2.5GbE Controllers"); MODULE_LICENSE("GPL"); |
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3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 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0x01 /* SamsungQ1 (2 sensors) */ #define FL_HFLIP 0x02 /* mirrored by default */ #define FL_VFLIP 0x04 /* vertical flipped by default */ }; enum bridges { BRIDGE_VC0321, BRIDGE_VC0323, }; enum sensors { SENSOR_HV7131R, SENSOR_MI0360, SENSOR_MI1310_SOC, SENSOR_MI1320, SENSOR_MI1320_SOC, SENSOR_OV7660, SENSOR_OV7670, SENSOR_PO1200, SENSOR_PO3130NC, SENSOR_POxxxx, NSENSORS }; static const struct v4l2_pix_format vc0321_mode[] = { {320, 240, V4L2_PIX_FMT_YVYU, V4L2_FIELD_NONE, .bytesperline = 320 * 2, .sizeimage = 320 * 240 * 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {640, 480, V4L2_PIX_FMT_YVYU, V4L2_FIELD_NONE, .bytesperline = 640 * 2, .sizeimage = 640 * 480 * 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; static const struct v4l2_pix_format vc0323_mode[] = { {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 1}, {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, {1280, 960, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, /* mi1310_soc only */ .bytesperline = 1280, .sizeimage = 1280 * 960 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 2}, }; static const struct v4l2_pix_format bi_mode[] = { {320, 240, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE, .bytesperline = 320 * 2, .sizeimage = 320 * 240 * 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE, .bytesperline = 640 * 2, .sizeimage = 640 * 480 * 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {1280, 1024, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE, .bytesperline = 1280 * 2, .sizeimage = 1280 * 1024 * 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; static const struct v4l2_pix_format svga_mode[] = { {800, 600, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 800, .sizeimage = 800 * 600 * 1 / 4 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; /* OV7660/7670 registers */ #define OV7660_REG_MVFP 0x1e #define OV7660_MVFP_MIRROR 0x20 #define OV7660_MVFP_VFLIP 0x10 static const u8 mi0360_matrix[9] = { 0x50, 0xf8, 0xf8, 0xf5, 0x50, 0xfb, 0xff, 0xf1, 0x50 }; static const u8 mi0360_initVGA_JPG[][4] = { {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0xb3, 0x00, 0x24, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x03, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x35, 0xdd, 0xcc}, /* i2c add: 5d */ {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xbc, 0x00, 0x71, 0xcc}, {0xb8, 0x00, 0x13, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x2c, 0x50, 0xcc}, {0xb8, 0x2d, 0xf8, 0xcc}, {0xb8, 0x2e, 0xf8, 0xcc}, {0xb8, 0x2f, 0xf8, 0xcc}, {0xb8, 0x30, 0x50, 0xcc}, {0xb8, 0x31, 0xf8, 0xcc}, {0xb8, 0x32, 0xf8, 0xcc}, {0xb8, 0x33, 0xf8, 0xcc}, {0xb8, 0x34, 0x50, 0xcc}, {0xb8, 0x35, 0x00, 0xcc}, {0xb8, 0x36, 0x00, 0xcc}, {0xb8, 0x37, 0x00, 0xcc}, {0xb8, 0x01, 0x79, 0xcc}, {0xb8, 0x08, 0xe0, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xb8, 0x01, 0x79, 0xcc}, {0xb8, 0x14, 0x18, 0xcc}, {0xb8, 0xb2, 0x0a, 0xcc}, {0xb8, 0xb4, 0x0a, 0xcc}, {0xb8, 0xb5, 0x0a, 0xcc}, {0xb8, 0xfe, 0x00, 0xcc}, {0xb8, 0xff, 0x28, 0xcc}, {0xb9, 0x00, 0x28, 0xcc}, {0xb9, 0x01, 0x28, 0xcc}, {0xb9, 0x02, 0x28, 0xcc}, {0xb9, 0x03, 0x00, 0xcc}, {0xb9, 0x04, 0x00, 0xcc}, {0xb9, 0x05, 0x3c, 0xcc}, {0xb9, 0x06, 0x3c, 0xcc}, {0xb9, 0x07, 0x3c, 0xcc}, {0xb9, 0x08, 0x3c, 0xcc}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0x31, 0x00, 0x00, 0xbb}, {0x09, 0x01, 0xc7, 0xbb}, {0x34, 0x01, 0x00, 0xbb}, {0x2b, 0x00, 0x28, 0xbb}, {0x2c, 0x00, 0x30, 0xbb}, {0x2d, 0x00, 0x30, 0xbb}, {0x2e, 0x00, 0x28, 0xbb}, {0x62, 0x04, 0x11, 0xbb}, {0x03, 0x01, 0xe0, 0xbb}, {0x2c, 0x00, 0x2c, 0xbb}, {0x20, 0xd0, 0x00, 0xbb}, {0x01, 0x00, 0x08, 0xbb}, {0x06, 0x00, 0x10, 0xbb}, {0x05, 0x00, 0x20, 0xbb}, {0x20, 0x00, 0x00, 0xbb}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x02, 0xcc}, {0xb6, 0x02, 0x80, 0xcc}, {0xb6, 0x05, 0x01, 0xcc}, {0xb6, 0x04, 0xe0, 0xcc}, {0xb6, 0x12, 0x78, 0xcc}, {0xb6, 0x18, 0x02, 0xcc}, {0xb6, 0x17, 0x58, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xb3, 0x02, 0x02, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x10, 0xcc}, {0xb9, 0x12, 0x00, 0xcc}, {0xb9, 0x13, 0x0a, 0xcc}, {0xb9, 0x14, 0x0a, 0xcc}, {0xb9, 0x15, 0x0a, 0xcc}, {0xb9, 0x16, 0x0a, 0xcc}, {0xb9, 0x18, 0x00, 0xcc}, {0xb9, 0x19, 0x0f, 0xcc}, {0xb9, 0x1a, 0x0f, 0xcc}, {0xb9, 0x1b, 0x0f, 0xcc}, {0xb9, 0x1c, 0x0f, 0xcc}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb8, 0x0c, 0x20, 0xcc}, {0xb8, 0x0d, 0x70, 0xcc}, {0xb6, 0x13, 0x13, 0xcc}, {0x35, 0x00, 0x60, 0xbb}, {0xb3, 0x5c, 0x01, 0xcc}, {} }; static const u8 mi0360_initQVGA_JPG[][4] = { {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0xb3, 0x00, 0x24, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x03, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x35, 0xdd, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xbc, 0x00, 0xd1, 0xcc}, {0xb8, 0x00, 0x13, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x2c, 0x50, 0xcc}, {0xb8, 0x2d, 0xf8, 0xcc}, {0xb8, 0x2e, 0xf8, 0xcc}, {0xb8, 0x2f, 0xf8, 0xcc}, {0xb8, 0x30, 0x50, 0xcc}, {0xb8, 0x31, 0xf8, 0xcc}, {0xb8, 0x32, 0xf8, 0xcc}, {0xb8, 0x33, 0xf8, 0xcc}, {0xb8, 0x34, 0x50, 0xcc}, {0xb8, 0x35, 0x00, 0xcc}, {0xb8, 0x36, 0x00, 0xcc}, {0xb8, 0x37, 0x00, 0xcc}, {0xb8, 0x01, 0x79, 0xcc}, {0xb8, 0x08, 0xe0, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xb8, 0x01, 0x79, 0xcc}, {0xb8, 0x14, 0x18, 0xcc}, {0xb8, 0xb2, 0x0a, 0xcc}, {0xb8, 0xb4, 0x0a, 0xcc}, {0xb8, 0xb5, 0x0a, 0xcc}, {0xb8, 0xfe, 0x00, 0xcc}, {0xb8, 0xff, 0x28, 0xcc}, {0xb9, 0x00, 0x28, 0xcc}, {0xb9, 0x01, 0x28, 0xcc}, {0xb9, 0x02, 0x28, 0xcc}, {0xb9, 0x03, 0x00, 0xcc}, {0xb9, 0x04, 0x00, 0xcc}, {0xb9, 0x05, 0x3c, 0xcc}, {0xb9, 0x06, 0x3c, 0xcc}, {0xb9, 0x07, 0x3c, 0xcc}, {0xb9, 0x08, 0x3c, 0xcc}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0x31, 0x00, 0x00, 0xbb}, {0x09, 0x01, 0xc7, 0xbb}, {0x34, 0x01, 0x00, 0xbb}, {0x2b, 0x00, 0x28, 0xbb}, {0x2c, 0x00, 0x30, 0xbb}, {0x2d, 0x00, 0x30, 0xbb}, {0x2e, 0x00, 0x28, 0xbb}, {0x62, 0x04, 0x11, 0xbb}, {0x03, 0x01, 0xe0, 0xbb}, {0x2c, 0x00, 0x2c, 0xbb}, {0x20, 0xd0, 0x00, 0xbb}, {0x01, 0x00, 0x08, 0xbb}, {0x06, 0x00, 0x10, 0xbb}, {0x05, 0x00, 0x20, 0xbb}, {0x20, 0x00, 0x00, 0xbb}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x01, 0xcc}, {0xb6, 0x02, 0x40, 0xcc}, {0xb6, 0x05, 0x00, 0xcc}, {0xb6, 0x04, 0xf0, 0xcc}, {0xb6, 0x12, 0x78, 0xcc}, {0xb6, 0x18, 0x00, 0xcc}, {0xb6, 0x17, 0x96, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xb3, 0x02, 0x02, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x10, 0xcc}, {0xb9, 0x12, 0x00, 0xcc}, {0xb9, 0x13, 0x0a, 0xcc}, {0xb9, 0x14, 0x0a, 0xcc}, {0xb9, 0x15, 0x0a, 0xcc}, {0xb9, 0x16, 0x0a, 0xcc}, {0xb9, 0x18, 0x00, 0xcc}, {0xb9, 0x19, 0x0f, 0xcc}, {0xb9, 0x1a, 0x0f, 0xcc}, {0xb9, 0x1b, 0x0f, 0xcc}, {0xb9, 0x1c, 0x0f, 0xcc}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x13, 0xcc}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xb8, 0x0c, 0x20, 0xcc}, {0xb8, 0x0d, 0x70, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0x35, 0x00, 0xef, 0xbb}, {0xb3, 0x5c, 0x01, 0xcc}, {} }; static const u8 mi1310_socinitVGA_JPG[][4] = { {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xdd, 0xcc}, /* i2c add: 5d */ {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x03, 0xcc}, {0xb3, 0x23, 0xc0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x04, 0xcc}, {0xb3, 0x17, 0xff, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb8, 0x00, 0x00, 0xcc}, {0xbc, 0x00, 0xd0, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xf0, 0x00, 0x02, 0xbb}, {0xc8, 0x9f, 0x0b, 0xbb}, {0x5b, 0x00, 0x01, 0xbb}, {0x2f, 0xde, 0x20, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x20, 0x03, 0x02, 0xbb}, /* h/v flip */ {0xf0, 0x00, 0x01, 0xbb}, {0x05, 0x00, 0x07, 0xbb}, {0x34, 0x00, 0x00, 0xbb}, {0x35, 0xff, 0x00, 0xbb}, {0xdc, 0x07, 0x02, 0xbb}, {0xdd, 0x3c, 0x18, 0xbb}, {0xde, 0x92, 0x6d, 0xbb}, {0xdf, 0xcd, 0xb1, 0xbb}, {0xe0, 0xff, 0xe7, 0xbb}, {0x06, 0xf0, 0x0d, 0xbb}, {0x06, 0x70, 0x0e, 0xbb}, {0x4c, 0x00, 0x01, 0xbb}, {0x4d, 0x00, 0x01, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x2e, 0x0c, 0x55, 0xbb}, {0x21, 0xb6, 0x6e, 0xbb}, {0x36, 0x30, 0x10, 0xbb}, {0x37, 0x00, 0xc1, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x07, 0x00, 0x84, 0xbb}, {0x08, 0x02, 0x4a, 0xbb}, {0x05, 0x01, 0x10, 0xbb}, {0x06, 0x00, 0x39, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x58, 0x02, 0x67, 0xbb}, {0x57, 0x02, 0x00, 0xbb}, {0x5a, 0x02, 0x67, 0xbb}, {0x59, 0x02, 0x00, 0xbb}, {0x5c, 0x12, 0x0d, 0xbb}, {0x5d, 0x16, 0x11, 0xbb}, {0x39, 0x06, 0x18, 0xbb}, {0x3a, 0x06, 0x18, 0xbb}, {0x3b, 0x06, 0x18, 0xbb}, {0x3c, 0x06, 0x18, 0xbb}, {0x64, 0x7b, 0x5b, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x36, 0x30, 0x10, 0xbb}, {0x37, 0x00, 0xc0, 0xbb}, {0xbc, 0x0e, 0x00, 0xcc}, {0xbc, 0x0f, 0x05, 0xcc}, {0xbc, 0x10, 0xc0, 0xcc}, {0xbc, 0x11, 0x03, 0xcc}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x02, 0xcc}, {0xb6, 0x02, 0x80, 0xcc}, {0xb6, 0x05, 0x01, 0xcc}, {0xb6, 0x04, 0xe0, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x25, 0xcc}, {0xb6, 0x18, 0x02, 0xcc}, {0xb6, 0x17, 0x58, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x00, 0xcc}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xf0, 0x00, 0x01, 0xbb}, {0x80, 0x00, 0x03, 0xbb}, {0x81, 0xc7, 0x14, 0xbb}, {0x82, 0xeb, 0xe8, 0xbb}, {0x83, 0xfe, 0xf4, 0xbb}, {0x84, 0xcd, 0x10, 0xbb}, {0x85, 0xf3, 0xee, 0xbb}, {0x86, 0xff, 0xf1, 0xbb}, {0x87, 0xcd, 0x10, 0xbb}, {0x88, 0xf3, 0xee, 0xbb}, {0x89, 0x01, 0xf1, 0xbb}, {0x8a, 0xe5, 0x17, 0xbb}, {0x8b, 0xe8, 0xe2, 0xbb}, {0x8c, 0xf7, 0xed, 0xbb}, {0x8d, 0x00, 0xff, 0xbb}, {0x8e, 0xec, 0x10, 0xbb}, {0x8f, 0xf0, 0xed, 0xbb}, {0x90, 0xf9, 0xf2, 0xbb}, {0x91, 0x00, 0x00, 0xbb}, {0x92, 0xe9, 0x0d, 0xbb}, {0x93, 0xf4, 0xf2, 0xbb}, {0x94, 0xfb, 0xf5, 0xbb}, {0x95, 0x00, 0xff, 0xbb}, {0xb6, 0x0f, 0x08, 0xbb}, {0xb7, 0x3d, 0x16, 0xbb}, {0xb8, 0x0c, 0x04, 0xbb}, {0xb9, 0x1c, 0x07, 0xbb}, {0xba, 0x0a, 0x03, 0xbb}, {0xbb, 0x1b, 0x09, 0xbb}, {0xbc, 0x17, 0x0d, 0xbb}, {0xbd, 0x23, 0x1d, 0xbb}, {0xbe, 0x00, 0x28, 0xbb}, {0xbf, 0x11, 0x09, 0xbb}, {0xc0, 0x16, 0x15, 0xbb}, {0xc1, 0x00, 0x1b, 0xbb}, {0xc2, 0x0e, 0x07, 0xbb}, {0xc3, 0x14, 0x10, 0xbb}, {0xc4, 0x00, 0x17, 0xbb}, {0x06, 0x74, 0x8e, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0xf4, 0x8e, 0xbb}, {0x00, 0x00, 0x50, 0xdd}, {0x06, 0x74, 0x8e, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x24, 0x50, 0x20, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x34, 0x0c, 0x50, 0xbb}, {0xb3, 0x01, 0x41, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x03, 0x03, 0xc0, 0xbb}, {}, }; static const u8 mi1310_socinitQVGA_JPG[][4] = { {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xdd, 0xcc}, {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x03, 0xcc}, {0xb3, 0x23, 0xc0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x04, 0xcc}, {0xb3, 0x17, 0xff, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb8, 0x00, 0x00, 0xcc}, {0xbc, 0x00, 0xf0, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xf0, 0x00, 0x02, 0xbb}, {0xc8, 0x9f, 0x0b, 0xbb}, {0x5b, 0x00, 0x01, 0xbb}, {0x2f, 0xde, 0x20, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x20, 0x03, 0x02, 0xbb}, /* h/v flip */ {0xf0, 0x00, 0x01, 0xbb}, {0x05, 0x00, 0x07, 0xbb}, {0x34, 0x00, 0x00, 0xbb}, {0x35, 0xff, 0x00, 0xbb}, {0xdc, 0x07, 0x02, 0xbb}, {0xdd, 0x3c, 0x18, 0xbb}, {0xde, 0x92, 0x6d, 0xbb}, {0xdf, 0xcd, 0xb1, 0xbb}, {0xe0, 0xff, 0xe7, 0xbb}, {0x06, 0xf0, 0x0d, 0xbb}, {0x06, 0x70, 0x0e, 0xbb}, {0x4c, 0x00, 0x01, 0xbb}, {0x4d, 0x00, 0x01, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x2e, 0x0c, 0x55, 0xbb}, {0x21, 0xb6, 0x6e, 0xbb}, {0x36, 0x30, 0x10, 0xbb}, {0x37, 0x00, 0xc1, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x07, 0x00, 0x84, 0xbb}, {0x08, 0x02, 0x4a, 0xbb}, {0x05, 0x01, 0x10, 0xbb}, {0x06, 0x00, 0x39, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x58, 0x02, 0x67, 0xbb}, {0x57, 0x02, 0x00, 0xbb}, {0x5a, 0x02, 0x67, 0xbb}, {0x59, 0x02, 0x00, 0xbb}, {0x5c, 0x12, 0x0d, 0xbb}, {0x5d, 0x16, 0x11, 0xbb}, {0x39, 0x06, 0x18, 0xbb}, {0x3a, 0x06, 0x18, 0xbb}, {0x3b, 0x06, 0x18, 0xbb}, {0x3c, 0x06, 0x18, 0xbb}, {0x64, 0x7b, 0x5b, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x36, 0x30, 0x10, 0xbb}, {0x37, 0x00, 0xc0, 0xbb}, {0xbc, 0x0e, 0x00, 0xcc}, {0xbc, 0x0f, 0x05, 0xcc}, {0xbc, 0x10, 0xc0, 0xcc}, {0xbc, 0x11, 0x03, 0xcc}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x01, 0xcc}, {0xb6, 0x02, 0x40, 0xcc}, {0xb6, 0x05, 0x00, 0xcc}, {0xb6, 0x04, 0xf0, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x25, 0xcc}, {0xb6, 0x18, 0x00, 0xcc}, {0xb6, 0x17, 0x96, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x00, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xf0, 0x00, 0x01, 0xbb}, {0x80, 0x00, 0x03, 0xbb}, {0x81, 0xc7, 0x14, 0xbb}, {0x82, 0xeb, 0xe8, 0xbb}, {0x83, 0xfe, 0xf4, 0xbb}, {0x84, 0xcd, 0x10, 0xbb}, {0x85, 0xf3, 0xee, 0xbb}, {0x86, 0xff, 0xf1, 0xbb}, {0x87, 0xcd, 0x10, 0xbb}, {0x88, 0xf3, 0xee, 0xbb}, {0x89, 0x01, 0xf1, 0xbb}, {0x8a, 0xe5, 0x17, 0xbb}, {0x8b, 0xe8, 0xe2, 0xbb}, {0x8c, 0xf7, 0xed, 0xbb}, {0x8d, 0x00, 0xff, 0xbb}, {0x8e, 0xec, 0x10, 0xbb}, {0x8f, 0xf0, 0xed, 0xbb}, {0x90, 0xf9, 0xf2, 0xbb}, {0x91, 0x00, 0x00, 0xbb}, {0x92, 0xe9, 0x0d, 0xbb}, {0x93, 0xf4, 0xf2, 0xbb}, {0x94, 0xfb, 0xf5, 0xbb}, {0x95, 0x00, 0xff, 0xbb}, {0xb6, 0x0f, 0x08, 0xbb}, {0xb7, 0x3d, 0x16, 0xbb}, {0xb8, 0x0c, 0x04, 0xbb}, {0xb9, 0x1c, 0x07, 0xbb}, {0xba, 0x0a, 0x03, 0xbb}, {0xbb, 0x1b, 0x09, 0xbb}, {0xbc, 0x17, 0x0d, 0xbb}, {0xbd, 0x23, 0x1d, 0xbb}, {0xbe, 0x00, 0x28, 0xbb}, {0xbf, 0x11, 0x09, 0xbb}, {0xc0, 0x16, 0x15, 0xbb}, {0xc1, 0x00, 0x1b, 0xbb}, {0xc2, 0x0e, 0x07, 0xbb}, {0xc3, 0x14, 0x10, 0xbb}, {0xc4, 0x00, 0x17, 0xbb}, {0x06, 0x74, 0x8e, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0xf4, 0x8e, 0xbb}, {0x00, 0x00, 0x50, 0xdd}, {0x06, 0x74, 0x8e, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x24, 0x50, 0x20, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x34, 0x0c, 0x50, 0xbb}, {0xb3, 0x01, 0x41, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x03, 0x03, 0xc0, 0xbb}, {}, }; static const u8 mi1310_soc_InitSXGA_JPG[][4] = { {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xdd, 0xcc}, {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x0d, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x03, 0xcc}, {0xb3, 0x23, 0xc0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x04, 0xcc}, {0xb3, 0x17, 0xff, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb8, 0x00, 0x00, 0xcc}, {0xbc, 0x00, 0x70, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xf0, 0x00, 0x02, 0xbb}, {0xc8, 0x9f, 0x0b, 0xbb}, {0x5b, 0x00, 0x01, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x20, 0x03, 0x02, 0xbb}, /* h/v flip */ {0xf0, 0x00, 0x01, 0xbb}, {0x05, 0x00, 0x07, 0xbb}, {0x34, 0x00, 0x00, 0xbb}, {0x35, 0xff, 0x00, 0xbb}, {0xdc, 0x07, 0x02, 0xbb}, {0xdd, 0x3c, 0x18, 0xbb}, {0xde, 0x92, 0x6d, 0xbb}, {0xdf, 0xcd, 0xb1, 0xbb}, {0xe0, 0xff, 0xe7, 0xbb}, {0x06, 0xf0, 0x0d, 0xbb}, {0x06, 0x70, 0x0e, 0xbb}, {0x4c, 0x00, 0x01, 0xbb}, {0x4d, 0x00, 0x01, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x2e, 0x0c, 0x60, 0xbb}, {0x21, 0xb6, 0x6e, 0xbb}, {0x37, 0x01, 0x40, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x07, 0x00, 0x84, 0xbb}, {0x08, 0x02, 0x4a, 0xbb}, {0x05, 0x01, 0x10, 0xbb}, {0x06, 0x00, 0x39, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x58, 0x02, 0x67, 0xbb}, {0x57, 0x02, 0x00, 0xbb}, {0x5a, 0x02, 0x67, 0xbb}, {0x59, 0x02, 0x00, 0xbb}, {0x5c, 0x12, 0x0d, 0xbb}, {0x5d, 0x16, 0x11, 0xbb}, {0x39, 0x06, 0x18, 0xbb}, {0x3a, 0x06, 0x18, 0xbb}, {0x3b, 0x06, 0x18, 0xbb}, {0x3c, 0x06, 0x18, 0xbb}, {0x64, 0x7b, 0x5b, 0xbb}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x05, 0xcc}, {0xb6, 0x02, 0x00, 0xcc}, {0xb6, 0x05, 0x03, 0xcc}, {0xb6, 0x04, 0xc0, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x29, 0xcc}, {0xb6, 0x18, 0x09, 0xcc}, {0xb6, 0x17, 0x60, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x00, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0x00, 0x00, 0x80, 0xdd}, {0xf0, 0x00, 0x02, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0x22, 0xa0, 0x78, 0xbb}, {0x23, 0xa0, 0x78, 0xbb}, {0x24, 0x7f, 0x00, 0xbb}, {0x28, 0xea, 0x02, 0xbb}, {0x29, 0x86, 0x7a, 0xbb}, {0x5e, 0x52, 0x4c, 0xbb}, {0x5f, 0x20, 0x24, 0xbb}, {0x60, 0x00, 0x02, 0xbb}, {0x02, 0x00, 0xee, 0xbb}, {0x03, 0x39, 0x23, 0xbb}, {0x04, 0x07, 0x24, 0xbb}, {0x09, 0x00, 0xc0, 0xbb}, {0x0a, 0x00, 0x79, 0xbb}, {0x0b, 0x00, 0x04, 0xbb}, {0x0c, 0x00, 0x5c, 0xbb}, {0x0d, 0x00, 0xd9, 0xbb}, {0x0e, 0x00, 0x53, 0xbb}, {0x0f, 0x00, 0x21, 0xbb}, {0x10, 0x00, 0xa4, 0xbb}, {0x11, 0x00, 0xe5, 0xbb}, {0x15, 0x00, 0x00, 0xbb}, {0x16, 0x00, 0x00, 0xbb}, {0x17, 0x00, 0x00, 0xbb}, {0x18, 0x00, 0x00, 0xbb}, {0x19, 0x00, 0x00, 0xbb}, {0x1a, 0x00, 0x00, 0xbb}, {0x1b, 0x00, 0x00, 0xbb}, {0x1c, 0x00, 0x00, 0xbb}, {0x1d, 0x00, 0x00, 0xbb}, {0x1e, 0x00, 0x00, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x00, 0x00, 0x20, 0xdd}, {0x06, 0xf0, 0x8e, 0xbb}, {0x00, 0x00, 0x80, 0xdd}, {0x06, 0x70, 0x8e, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x00, 0x00, 0x20, 0xdd}, {0x5e, 0x6a, 0x53, 0xbb}, {0x5f, 0x40, 0x2c, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x00, 0x00, 0x20, 0xdd}, {0x58, 0x00, 0x00, 0xbb}, {0x53, 0x09, 0x03, 0xbb}, {0x54, 0x31, 0x18, 0xbb}, {0x55, 0x8b, 0x5f, 0xbb}, {0x56, 0xc0, 0xa9, 0xbb}, {0x57, 0xe0, 0xd2, 0xbb}, {0xe1, 0x00, 0x00, 0xbb}, {0xdc, 0x09, 0x03, 0xbb}, {0xdd, 0x31, 0x18, 0xbb}, {0xde, 0x8b, 0x5f, 0xbb}, {0xdf, 0xc0, 0xa9, 0xbb}, {0xe0, 0xe0, 0xd2, 0xbb}, {0xb3, 0x5c, 0x01, 0xcc}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0xf0, 0x8e, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x2f, 0xde, 0x20, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x24, 0x50, 0x20, 0xbb}, {0xbc, 0x0e, 0x00, 0xcc}, {0xbc, 0x0f, 0x05, 0xcc}, {0xbc, 0x10, 0xc0, 0xcc}, {0xf0, 0x00, 0x02, 0xbb}, {0x34, 0x0c, 0x50, 0xbb}, {0xbc, 0x11, 0x03, 0xcc}, {0xf0, 0x00, 0x01, 0xbb}, {0x80, 0x00, 0x03, 0xbb}, {0x81, 0xc7, 0x14, 0xbb}, {0x82, 0xeb, 0xe8, 0xbb}, {0x83, 0xfe, 0xf4, 0xbb}, {0x84, 0xcd, 0x10, 0xbb}, {0x85, 0xf3, 0xee, 0xbb}, {0x86, 0xff, 0xf1, 0xbb}, {0x87, 0xcd, 0x10, 0xbb}, {0x88, 0xf3, 0xee, 0xbb}, {0x89, 0x01, 0xf1, 0xbb}, {0x8a, 0xe5, 0x17, 0xbb}, {0x8b, 0xe8, 0xe2, 0xbb}, {0x8c, 0xf7, 0xed, 0xbb}, {0x8d, 0x00, 0xff, 0xbb}, {0x8e, 0xec, 0x10, 0xbb}, {0x8f, 0xf0, 0xed, 0xbb}, {0x90, 0xf9, 0xf2, 0xbb}, {0x91, 0x00, 0x00, 0xbb}, {0x92, 0xe9, 0x0d, 0xbb}, {0x93, 0xf4, 0xf2, 0xbb}, {0x94, 0xfb, 0xf5, 0xbb}, {0x95, 0x00, 0xff, 0xbb}, {0xb6, 0x0f, 0x08, 0xbb}, {0xb7, 0x3d, 0x16, 0xbb}, {0xb8, 0x0c, 0x04, 0xbb}, {0xb9, 0x1c, 0x07, 0xbb}, {0xba, 0x0a, 0x03, 0xbb}, {0xbb, 0x1b, 0x09, 0xbb}, {0xbc, 0x17, 0x0d, 0xbb}, {0xbd, 0x23, 0x1d, 0xbb}, {0xbe, 0x00, 0x28, 0xbb}, {0xbf, 0x11, 0x09, 0xbb}, {0xc0, 0x16, 0x15, 0xbb}, {0xc1, 0x00, 0x1b, 0xbb}, {0xc2, 0x0e, 0x07, 0xbb}, {0xc3, 0x14, 0x10, 0xbb}, {0xc4, 0x00, 0x17, 0xbb}, {0x06, 0x74, 0x8e, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x03, 0x03, 0xc0, 0xbb}, {} }; static const u8 mi1320_gamma[17] = { 0x00, 0x13, 0x38, 0x59, 0x79, 0x92, 0xa7, 0xb9, 0xc8, 0xd4, 0xdf, 0xe7, 0xee, 0xf4, 0xf9, 0xfc, 0xff }; static const u8 mi1320_matrix[9] = { 0x54, 0xda, 0x06, 0xf1, 0x50, 0xf4, 0xf7, 0xea, 0x52 }; static const u8 mi1320_initVGA_data[][4] = { {0xb3, 0x01, 0x01, 0xcc}, {0x00, 0x00, 0x33, 0xdd}, {0xb0, 0x03, 0x19, 0xcc}, {0x00, 0x00, 0x33, 0xdd}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x33, 0xdd}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb0, 0x16, 0x03, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xc8, 0xcc}, /* i2c add: 48 */ {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x03, 0xcc}, {0xb3, 0x23, 0xc0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x04, 0xcc}, {0xb3, 0x17, 0xff, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xbc, 0x00, 0xd0, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x0d, 0x00, 0x09, 0xbb}, {0x00, 0x01, 0x00, 0xdd}, {0x0d, 0x00, 0x08, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0xa1, 0x05, 0x00, 0xbb}, {0xa4, 0x03, 0xc0, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0xc8, 0x9f, 0x0b, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0xf0, 0x00, 0x00, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0x20, 0x01, 0x00, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0xf0, 0x00, 0x01, 0xbb}, {0x9d, 0x3c, 0xa0, 0xbb}, {0x47, 0x30, 0x30, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x0a, 0x80, 0x11, 0xbb}, {0x35, 0x00, 0x22, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x9d, 0xc5, 0x05, 0xbb}, {0xdc, 0x0f, 0xfc, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0x74, 0x0e, 0xbb}, {0x80, 0x00, 0x06, 0xbb}, {0x81, 0x04, 0x00, 0xbb}, {0x82, 0x01, 0x02, 0xbb}, {0x83, 0x03, 0x02, 0xbb}, {0x84, 0x05, 0x00, 0xbb}, {0x85, 0x01, 0x00, 0xbb}, {0x86, 0x03, 0x02, 0xbb}, {0x87, 0x05, 0x00, 0xbb}, {0x88, 0x01, 0x00, 0xbb}, {0x89, 0x02, 0x02, 0xbb}, {0x8a, 0xfd, 0x04, 0xbb}, {0x8b, 0xfc, 0xfd, 0xbb}, {0x8c, 0xff, 0xfd, 0xbb}, {0x8d, 0x00, 0x00, 0xbb}, {0x8e, 0xfe, 0x05, 0xbb}, {0x8f, 0xfc, 0xfd, 0xbb}, {0x90, 0xfe, 0xfd, 0xbb}, {0x91, 0x00, 0x00, 0xbb}, {0x92, 0xfe, 0x03, 0xbb}, {0x93, 0xfd, 0xfe, 0xbb}, {0x94, 0xff, 0xfd, 0xbb}, {0x95, 0x00, 0x00, 0xbb}, {0xb6, 0x07, 0x05, 0xbb}, {0xb7, 0x13, 0x06, 0xbb}, {0xb8, 0x08, 0x06, 0xbb}, {0xb9, 0x14, 0x08, 0xbb}, {0xba, 0x06, 0x05, 0xbb}, {0xbb, 0x13, 0x06, 0xbb}, {0xbc, 0x03, 0x01, 0xbb}, {0xbd, 0x03, 0x04, 0xbb}, {0xbe, 0x00, 0x02, 0xbb}, {0xbf, 0x03, 0x01, 0xbb}, {0xc0, 0x02, 0x04, 0xbb}, {0xc1, 0x00, 0x04, 0xbb}, {0xc2, 0x02, 0x01, 0xbb}, {0xc3, 0x01, 0x03, 0xbb}, {0xc4, 0x00, 0x04, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x05, 0x01, 0x13, 0xbb}, {0x06, 0x00, 0x11, 0xbb}, {0x07, 0x00, 0x85, 0xbb}, {0x08, 0x00, 0x27, 0xbb}, {0x20, 0x01, 0x00, 0xbb}, /* h/v flips - was 03 */ {0x21, 0x80, 0x00, 0xbb}, {0x22, 0x0d, 0x0f, 0xbb}, {0x24, 0x80, 0x00, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x39, 0x03, 0x0d, 0xbb}, {0x3a, 0x06, 0x1b, 0xbb}, {0x3b, 0x00, 0x95, 0xbb}, {0x3c, 0x04, 0xdb, 0xbb}, {0x57, 0x02, 0x00, 0xbb}, {0x58, 0x02, 0x66, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0x5a, 0x01, 0x33, 0xbb}, {0x5c, 0x12, 0x0d, 0xbb}, {0x5d, 0x16, 0x11, 0xbb}, {0x64, 0x5e, 0x1c, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x2f, 0xd1, 0x00, 0xbb}, {0x5b, 0x00, 0x01, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x36, 0x68, 0x10, 0xbb}, {0x00, 0x00, 0x30, 0xdd}, {0x37, 0x82, 0x00, 0xbb}, {0xbc, 0x0e, 0x00, 0xcc}, {0xbc, 0x0f, 0x05, 0xcc}, {0xbc, 0x10, 0xc0, 0xcc}, {0xbc, 0x11, 0x03, 0xcc}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x05, 0xcc}, {0xb6, 0x02, 0x00, 0xcc}, {0xb6, 0x05, 0x04, 0xcc}, {0xb6, 0x04, 0x00, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x29, 0xcc}, {0xb6, 0x18, 0x0a, 0xcc}, {0xb6, 0x17, 0x00, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xbf, 0xc0, 0x26, 0xcc}, {0xbf, 0xc1, 0x02, 0xcc}, {0xbf, 0xcc, 0x04, 0xcc}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {} }; static const u8 mi1320_initQVGA_data[][4] = { {0xb3, 0x01, 0x01, 0xcc}, {0x00, 0x00, 0x33, 0xdd}, {0xb0, 0x03, 0x19, 0xcc}, {0x00, 0x00, 0x33, 0xdd}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x33, 0xdd}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb0, 0x16, 0x03, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xc8, 0xcc}, {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb8, 0x00, 0x00, 0xcc}, {0xbc, 0x00, 0xd0, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x0d, 0x00, 0x09, 0xbb}, {0x00, 0x01, 0x00, 0xdd}, {0x0d, 0x00, 0x08, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x02, 0x00, 0x64, 0xbb}, {0x05, 0x01, 0x78, 0xbb}, {0x06, 0x00, 0x11, 0xbb}, {0x07, 0x01, 0x42, 0xbb}, {0x08, 0x00, 0x11, 0xbb}, {0x20, 0x01, 0x00, 0xbb}, {0x21, 0x80, 0x00, 0xbb}, {0x22, 0x0d, 0x0f, 0xbb}, {0x24, 0x80, 0x00, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x9d, 0x3c, 0xa0, 0xbb}, {0x47, 0x30, 0x30, 0xbb}, {0xf0, 0x00, 0x00, 0xbb}, {0x0a, 0x80, 0x11, 0xbb}, {0x35, 0x00, 0x22, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x9d, 0xc5, 0x05, 0xbb}, {0xdc, 0x0f, 0xfc, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0x74, 0x0e, 0xbb}, {0x80, 0x00, 0x06, 0xbb}, {0x81, 0x04, 0x00, 0xbb}, {0x82, 0x01, 0x02, 0xbb}, {0x83, 0x03, 0x02, 0xbb}, {0x84, 0x05, 0x00, 0xbb}, {0x85, 0x01, 0x00, 0xbb}, {0x86, 0x03, 0x02, 0xbb}, {0x87, 0x05, 0x00, 0xbb}, {0x88, 0x01, 0x00, 0xbb}, {0x89, 0x02, 0x02, 0xbb}, {0x8a, 0xfd, 0x04, 0xbb}, {0x8b, 0xfc, 0xfd, 0xbb}, {0x8c, 0xff, 0xfd, 0xbb}, {0x8d, 0x00, 0x00, 0xbb}, {0x8e, 0xfe, 0x05, 0xbb}, {0x8f, 0xfc, 0xfd, 0xbb}, {0x90, 0xfe, 0xfd, 0xbb}, {0x91, 0x00, 0x00, 0xbb}, {0x92, 0xfe, 0x03, 0xbb}, {0x93, 0xfd, 0xfe, 0xbb}, {0x94, 0xff, 0xfd, 0xbb}, {0x95, 0x00, 0x00, 0xbb}, {0xb6, 0x07, 0x05, 0xbb}, {0xb7, 0x13, 0x06, 0xbb}, {0xb8, 0x08, 0x06, 0xbb}, {0xb9, 0x14, 0x08, 0xbb}, {0xba, 0x06, 0x05, 0xbb}, {0xbb, 0x13, 0x06, 0xbb}, {0xbc, 0x03, 0x01, 0xbb}, {0xbd, 0x03, 0x04, 0xbb}, {0xbe, 0x00, 0x02, 0xbb}, {0xbf, 0x03, 0x01, 0xbb}, {0xc0, 0x02, 0x04, 0xbb}, {0xc1, 0x00, 0x04, 0xbb}, {0xc2, 0x02, 0x01, 0xbb}, {0xc3, 0x01, 0x03, 0xbb}, {0xc4, 0x00, 0x04, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0xc8, 0x00, 0x00, 0xbb}, {0x2e, 0x00, 0x00, 0xbb}, {0x2e, 0x0c, 0x5b, 0xbb}, {0x2f, 0xd1, 0x00, 0xbb}, {0x39, 0x03, 0xca, 0xbb}, {0x3a, 0x06, 0x80, 0xbb}, {0x3b, 0x01, 0x52, 0xbb}, {0x3c, 0x05, 0x40, 0xbb}, {0x57, 0x01, 0x9c, 0xbb}, {0x58, 0x01, 0xee, 0xbb}, {0x59, 0x00, 0xf0, 0xbb}, {0x5a, 0x01, 0x20, 0xbb}, {0x5c, 0x1d, 0x17, 0xbb}, {0x5d, 0x22, 0x1c, 0xbb}, {0x64, 0x1e, 0x1c, 0xbb}, {0x5b, 0x00, 0x01, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x36, 0x68, 0x10, 0xbb}, {0x00, 0x00, 0x30, 0xdd}, {0x37, 0x81, 0x00, 0xbb}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0xbf, 0xc0, 0x26, 0xcc}, {0xbf, 0xc1, 0x02, 0xcc}, {0xbf, 0xcc, 0x04, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {} }; static const u8 mi1320_soc_InitVGA[][4] = { {0xb3, 0x01, 0x01, 0xcc}, {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x30, 0xdd}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xc8, 0xcc}, /* i2c add: 48 */ {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb8, 0x00, 0x00, 0xcc}, {0xbc, 0x00, 0x71, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xf0, 0x00, 0x02, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0xc8, 0x00, 0x00, 0xbb}, {0x00, 0x00, 0x30, 0xdd}, {0xf0, 0x00, 0x00, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0x07, 0x00, 0xe0, 0xbb}, {0x08, 0x00, 0x0b, 0xbb}, {0x21, 0x00, 0x0c, 0xbb}, {0x20, 0x01, 0x03, 0xbb}, /* h/v flip */ {0xbf, 0xc0, 0x26, 0xcc}, {0xbf, 0xc1, 0x02, 0xcc}, {0xbf, 0xcc, 0x04, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x05, 0x01, 0x78, 0xbb}, {0x06, 0x00, 0x11, 0xbb}, {0x07, 0x01, 0x42, 0xbb}, {0x08, 0x00, 0x11, 0xbb}, {0x20, 0x01, 0x03, 0xbb}, /* h/v flip */ {0x21, 0x80, 0x00, 0xbb}, {0x22, 0x0d, 0x0f, 0xbb}, {0x24, 0x80, 0x00, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x39, 0x03, 0xca, 0xbb}, {0x3a, 0x06, 0x80, 0xbb}, {0x3b, 0x01, 0x52, 0xbb}, {0x3c, 0x05, 0x40, 0xbb}, {0x57, 0x01, 0x9c, 0xbb}, {0x58, 0x01, 0xee, 0xbb}, {0x59, 0x00, 0xf0, 0xbb}, {0x5a, 0x01, 0x20, 0xbb}, {0x5c, 0x1d, 0x17, 0xbb}, {0x5d, 0x22, 0x1c, 0xbb}, {0x64, 0x1e, 0x1c, 0xbb}, {0x5b, 0x00, 0x00, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x22, 0xa0, 0x78, 0xbb}, {0x23, 0xa0, 0x78, 0xbb}, {0x24, 0x7f, 0x00, 0xbb}, {0x28, 0xea, 0x02, 0xbb}, {0x29, 0x86, 0x7a, 0xbb}, {0x5e, 0x52, 0x4c, 0xbb}, {0x5f, 0x20, 0x24, 0xbb}, {0x60, 0x00, 0x02, 0xbb}, {0x02, 0x00, 0xee, 0xbb}, {0x03, 0x39, 0x23, 0xbb}, {0x04, 0x07, 0x24, 0xbb}, {0x09, 0x00, 0xc0, 0xbb}, {0x0a, 0x00, 0x79, 0xbb}, {0x0b, 0x00, 0x04, 0xbb}, {0x0c, 0x00, 0x5c, 0xbb}, {0x0d, 0x00, 0xd9, 0xbb}, {0x0e, 0x00, 0x53, 0xbb}, {0x0f, 0x00, 0x21, 0xbb}, {0x10, 0x00, 0xa4, 0xbb}, {0x11, 0x00, 0xe5, 0xbb}, {0x15, 0x00, 0x00, 0xbb}, {0x16, 0x00, 0x00, 0xbb}, {0x17, 0x00, 0x00, 0xbb}, {0x18, 0x00, 0x00, 0xbb}, {0x19, 0x00, 0x00, 0xbb}, {0x1a, 0x00, 0x00, 0xbb}, {0x1b, 0x00, 0x00, 0xbb}, {0x1c, 0x00, 0x00, 0xbb}, {0x1d, 0x00, 0x00, 0xbb}, {0x1e, 0x00, 0x00, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0xe0, 0x0e, 0xbb}, {0x06, 0x60, 0x0e, 0xbb}, {0xb3, 0x5c, 0x01, 0xcc}, {} }; static const u8 mi1320_soc_InitQVGA[][4] = { {0xb3, 0x01, 0x01, 0xcc}, {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x30, 0xdd}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xc8, 0xcc}, {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb8, 0x00, 0x00, 0xcc}, {0xbc, 0x00, 0xd1, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xf0, 0x00, 0x02, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0xc8, 0x00, 0x00, 0xbb}, {0x00, 0x00, 0x30, 0xdd}, {0xf0, 0x00, 0x00, 0xbb}, {0x00, 0x00, 0x10, 0xdd}, {0x07, 0x00, 0xe0, 0xbb}, {0x08, 0x00, 0x0b, 0xbb}, {0x21, 0x00, 0x0c, 0xbb}, {0x20, 0x01, 0x03, 0xbb}, /* h/v flip */ {0xbf, 0xc0, 0x26, 0xcc}, {0xbf, 0xc1, 0x02, 0xcc}, {0xbf, 0xcc, 0x04, 0xcc}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x05, 0x01, 0x78, 0xbb}, {0x06, 0x00, 0x11, 0xbb}, {0x07, 0x01, 0x42, 0xbb}, {0x08, 0x00, 0x11, 0xbb}, {0x20, 0x01, 0x03, 0xbb}, /* h/v flip */ {0x21, 0x80, 0x00, 0xbb}, {0x22, 0x0d, 0x0f, 0xbb}, {0x24, 0x80, 0x00, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x39, 0x03, 0xca, 0xbb}, {0x3a, 0x06, 0x80, 0xbb}, {0x3b, 0x01, 0x52, 0xbb}, {0x3c, 0x05, 0x40, 0xbb}, {0x57, 0x01, 0x9c, 0xbb}, {0x58, 0x01, 0xee, 0xbb}, {0x59, 0x00, 0xf0, 0xbb}, {0x5a, 0x01, 0x20, 0xbb}, {0x5c, 0x1d, 0x17, 0xbb}, {0x5d, 0x22, 0x1c, 0xbb}, {0x64, 0x1e, 0x1c, 0xbb}, {0x5b, 0x00, 0x00, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x22, 0xa0, 0x78, 0xbb}, {0x23, 0xa0, 0x78, 0xbb}, {0x24, 0x7f, 0x00, 0xbb}, {0x28, 0xea, 0x02, 0xbb}, {0x29, 0x86, 0x7a, 0xbb}, {0x5e, 0x52, 0x4c, 0xbb}, {0x5f, 0x20, 0x24, 0xbb}, {0x60, 0x00, 0x02, 0xbb}, {0x02, 0x00, 0xee, 0xbb}, {0x03, 0x39, 0x23, 0xbb}, {0x04, 0x07, 0x24, 0xbb}, {0x09, 0x00, 0xc0, 0xbb}, {0x0a, 0x00, 0x79, 0xbb}, {0x0b, 0x00, 0x04, 0xbb}, {0x0c, 0x00, 0x5c, 0xbb}, {0x0d, 0x00, 0xd9, 0xbb}, {0x0e, 0x00, 0x53, 0xbb}, {0x0f, 0x00, 0x21, 0xbb}, {0x10, 0x00, 0xa4, 0xbb}, {0x11, 0x00, 0xe5, 0xbb}, {0x15, 0x00, 0x00, 0xbb}, {0x16, 0x00, 0x00, 0xbb}, {0x17, 0x00, 0x00, 0xbb}, {0x18, 0x00, 0x00, 0xbb}, {0x19, 0x00, 0x00, 0xbb}, {0x1a, 0x00, 0x00, 0xbb}, {0x1b, 0x00, 0x00, 0xbb}, {0x1c, 0x00, 0x00, 0xbb}, {0x1d, 0x00, 0x00, 0xbb}, {0x1e, 0x00, 0x00, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0xe0, 0x0e, 0xbb}, {0x06, 0x60, 0x0e, 0xbb}, {0xb3, 0x5c, 0x01, 0xcc}, {} }; static const u8 mi1320_soc_InitSXGA[][4] = { {0xb3, 0x01, 0x01, 0xcc}, {0xb0, 0x03, 0x19, 0xcc}, {0x00, 0x00, 0x30, 0xdd}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x02, 0xcc}, {0xb3, 0x35, 0xc8, 0xcc}, {0xb3, 0x02, 0x00, 0xcc}, {0xb3, 0x03, 0x0a, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x04, 0xcc}, {0xb3, 0x23, 0x00, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x04, 0xcc}, {0xb3, 0x17, 0xff, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xbc, 0x00, 0x71, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xf0, 0x00, 0x02, 0xbb}, {0x00, 0x00, 0x30, 0xdd}, {0xc8, 0x9f, 0x0b, 0xbb}, {0x00, 0x00, 0x20, 0xdd}, {0x5b, 0x00, 0x01, 0xbb}, {0x00, 0x00, 0x20, 0xdd}, {0xf0, 0x00, 0x00, 0xbb}, {0x00, 0x00, 0x30, 0xdd}, {0x20, 0x01, 0x03, 0xbb}, /* h/v flip */ {0x00, 0x00, 0x20, 0xdd}, {0xbf, 0xc0, 0x26, 0xcc}, {0xbf, 0xc1, 0x02, 0xcc}, {0xbf, 0xcc, 0x04, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x05, 0x01, 0x78, 0xbb}, {0x06, 0x00, 0x11, 0xbb}, {0x07, 0x01, 0x42, 0xbb}, {0x08, 0x00, 0x11, 0xbb}, {0x20, 0x01, 0x03, 0xbb}, /* h/v flip */ {0x21, 0x80, 0x00, 0xbb}, {0x22, 0x0d, 0x0f, 0xbb}, {0x24, 0x80, 0x00, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x39, 0x03, 0xca, 0xbb}, {0x3a, 0x06, 0x80, 0xbb}, {0x3b, 0x01, 0x52, 0xbb}, {0x3c, 0x05, 0x40, 0xbb}, {0x57, 0x01, 0x9c, 0xbb}, {0x58, 0x01, 0xee, 0xbb}, {0x59, 0x00, 0xf0, 0xbb}, {0x5a, 0x01, 0x20, 0xbb}, {0x5c, 0x1d, 0x17, 0xbb}, {0x5d, 0x22, 0x1c, 0xbb}, {0x64, 0x1e, 0x1c, 0xbb}, {0x5b, 0x00, 0x00, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x22, 0xa0, 0x78, 0xbb}, {0x23, 0xa0, 0x78, 0xbb}, {0x24, 0x7f, 0x00, 0xbb}, {0x28, 0xea, 0x02, 0xbb}, {0x29, 0x86, 0x7a, 0xbb}, {0x5e, 0x52, 0x4c, 0xbb}, {0x5f, 0x20, 0x24, 0xbb}, {0x60, 0x00, 0x02, 0xbb}, {0x02, 0x00, 0xee, 0xbb}, {0x03, 0x39, 0x23, 0xbb}, {0x04, 0x07, 0x24, 0xbb}, {0x09, 0x00, 0xc0, 0xbb}, {0x0a, 0x00, 0x79, 0xbb}, {0x0b, 0x00, 0x04, 0xbb}, {0x0c, 0x00, 0x5c, 0xbb}, {0x0d, 0x00, 0xd9, 0xbb}, {0x0e, 0x00, 0x53, 0xbb}, {0x0f, 0x00, 0x21, 0xbb}, {0x10, 0x00, 0xa4, 0xbb}, {0x11, 0x00, 0xe5, 0xbb}, {0x15, 0x00, 0x00, 0xbb}, {0x16, 0x00, 0x00, 0xbb}, {0x17, 0x00, 0x00, 0xbb}, {0x18, 0x00, 0x00, 0xbb}, {0x19, 0x00, 0x00, 0xbb}, {0x1a, 0x00, 0x00, 0xbb}, {0x1b, 0x00, 0x00, 0xbb}, {0x1c, 0x00, 0x00, 0xbb}, {0x1d, 0x00, 0x00, 0xbb}, {0x1e, 0x00, 0x00, 0xbb}, {0xf0, 0x00, 0x01, 0xbb}, {0x06, 0xe0, 0x0e, 0xbb}, {0x06, 0x60, 0x0e, 0xbb}, {0xb3, 0x5c, 0x01, 0xcc}, {0xf0, 0x00, 0x00, 0xbb}, {0x05, 0x01, 0x13, 0xbb}, {0x06, 0x00, 0x11, 0xbb}, {0x07, 0x00, 0x85, 0xbb}, {0x08, 0x00, 0x27, 0xbb}, {0x20, 0x01, 0x03, 0xbb}, /* h/v flip */ {0x21, 0x80, 0x00, 0xbb}, {0x22, 0x0d, 0x0f, 0xbb}, {0x24, 0x80, 0x00, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0xf0, 0x00, 0x02, 0xbb}, {0x39, 0x03, 0x0d, 0xbb}, {0x3a, 0x06, 0x1b, 0xbb}, {0x3b, 0x00, 0x95, 0xbb}, {0x3c, 0x04, 0xdb, 0xbb}, {0x57, 0x02, 0x00, 0xbb}, {0x58, 0x02, 0x66, 0xbb}, {0x59, 0x00, 0xff, 0xbb}, {0x5a, 0x01, 0x33, 0xbb}, {0x5c, 0x12, 0x0d, 0xbb}, {0x5d, 0x16, 0x11, 0xbb}, {0x64, 0x5e, 0x1c, 0xbb}, {} }; static const u8 po3130_gamma[17] = { 0x00, 0x13, 0x38, 0x59, 0x79, 0x92, 0xa7, 0xb9, 0xc8, 0xd4, 0xdf, 0xe7, 0xee, 0xf4, 0xf9, 0xfc, 0xff }; static const u8 po3130_matrix[9] = { 0x5f, 0xec, 0xf5, 0xf1, 0x5a, 0xf5, 0xf1, 0xec, 0x63 }; static const u8 po3130_initVGA_data[][4] = { {0xb0, 0x4d, 0x00, 0xcc}, {0xb3, 0x01, 0x01, 0xcc}, {0x00, 0x00, 0x50, 0xdd}, {0xb0, 0x03, 0x01, 0xcc}, {0xb3, 0x00, 0x04, 0xcc}, {0xb3, 0x00, 0x24, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x03, 0x1a, 0xcc}, {0xb3, 0x04, 0x15, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe8, 0xcc}, {0xb8, 0x08, 0xe8, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0xf6, 0xcc}, /* i2c add: 76 */ {0xb3, 0x00, 0x27, 0xcc}, {0xbc, 0x00, 0x71, 0xcc}, {0xb8, 0x00, 0x21, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x01, 0x79, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0xb8, 0x2c, 0x50, 0xcc}, {0xb8, 0x2d, 0xf8, 0xcc}, {0xb8, 0x2e, 0xf8, 0xcc}, {0xb8, 0x2f, 0xf8, 0xcc}, {0xb8, 0x30, 0x50, 0xcc}, {0xb8, 0x31, 0xf8, 0xcc}, {0xb8, 0x32, 0xf8, 0xcc}, {0xb8, 0x33, 0xf8, 0xcc}, {0xb8, 0x34, 0x50, 0xcc}, {0xb8, 0x35, 0x00, 0xcc}, {0xb8, 0x36, 0x00, 0xcc}, {0xb8, 0x37, 0x00, 0xcc}, {0x00, 0x1e, 0xc6, 0xaa}, {0x00, 0x20, 0x44, 0xaa}, {0x00, 0xad, 0x02, 0xaa}, {0x00, 0xae, 0x2c, 0xaa}, {0x00, 0x12, 0x08, 0xaa}, {0x00, 0x17, 0x41, 0xaa}, {0x00, 0x19, 0x41, 0xaa}, {0x00, 0x1e, 0x06, 0xaa}, {0x00, 0x21, 0x00, 0xaa}, {0x00, 0x36, 0xc0, 0xaa}, {0x00, 0x37, 0xc8, 0xaa}, {0x00, 0x3b, 0x36, 0xaa}, {0x00, 0x4b, 0xfe, 0xaa}, {0x00, 0x51, 0x1c, 0xaa}, {0x00, 0x52, 0x01, 0xaa}, {0x00, 0x55, 0x0a, 0xaa}, {0x00, 0x59, 0x02, 0xaa}, {0x00, 0x5a, 0x04, 0xaa}, {0x00, 0x5c, 0x10, 0xaa}, {0x00, 0x5d, 0x10, 0xaa}, {0x00, 0x5e, 0x10, 0xaa}, {0x00, 0x5f, 0x10, 0xaa}, {0x00, 0x61, 0x00, 0xaa}, {0x00, 0x62, 0x18, 0xaa}, {0x00, 0x63, 0x30, 0xaa}, {0x00, 0x70, 0x68, 0xaa}, {0x00, 0x80, 0x71, 0xaa}, {0x00, 0x81, 0x08, 0xaa}, {0x00, 0x82, 0x00, 0xaa}, {0x00, 0x83, 0x55, 0xaa}, {0x00, 0x84, 0x06, 0xaa}, {0x00, 0x85, 0x06, 0xaa}, {0x00, 0x86, 0x13, 0xaa}, {0x00, 0x87, 0x18, 0xaa}, {0x00, 0xaa, 0x3f, 0xaa}, {0x00, 0xab, 0x44, 0xaa}, {0x00, 0xb0, 0x68, 0xaa}, {0x00, 0xb5, 0x10, 0xaa}, {0x00, 0xb8, 0x20, 0xaa}, {0x00, 0xb9, 0xa0, 0xaa}, {0x00, 0xbc, 0x04, 0xaa}, {0x00, 0x8b, 0x40, 0xaa}, {0x00, 0x8c, 0x91, 0xaa}, {0x00, 0x8d, 0x8f, 0xaa}, {0x00, 0x8e, 0x91, 0xaa}, {0x00, 0x8f, 0x43, 0xaa}, {0x00, 0x90, 0x92, 0xaa}, {0x00, 0x91, 0x89, 0xaa}, {0x00, 0x92, 0x9d, 0xaa}, {0x00, 0x93, 0x46, 0xaa}, {0x00, 0xd6, 0x22, 0xaa}, {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x10, 0xaa}, {0x00, 0x75, 0x20, 0xaa}, {0x00, 0x76, 0x2b, 0xaa}, {0x00, 0x77, 0x36, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0xd6, 0x62, 0xaa}, {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x10, 0xaa}, {0x00, 0x75, 0x20, 0xaa}, {0x00, 0x76, 0x2b, 0xaa}, {0x00, 0x77, 0x36, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0xd6, 0xa2, 0xaa}, {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x10, 0xaa}, {0x00, 0x75, 0x20, 0xaa}, {0x00, 0x76, 0x2b, 0xaa}, {0x00, 0x77, 0x36, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0x4c, 0x07, 0xaa}, {0x00, 0x4b, 0xe0, 0xaa}, {0x00, 0x4e, 0x77, 0xaa}, {0x00, 0x59, 0x02, 0xaa}, {0x00, 0x4d, 0x0a, 0xaa}, /* {0x00, 0xd1, 0x00, 0xaa}, {0x00, 0x20, 0xc4, 0xaa}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, */ {0x00, 0xd1, 0x3c, 0xaa}, {0x00, 0x20, 0xc4, 0xaa}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0xb8, 0xfe, 0x00, 0xcc}, {0xb8, 0xff, 0x28, 0xcc}, {0xb9, 0x00, 0x28, 0xcc}, {0xb9, 0x01, 0x28, 0xcc}, {0xb9, 0x02, 0x28, 0xcc}, {0xb9, 0x03, 0x00, 0xcc}, {0xb9, 0x04, 0x00, 0xcc}, {0xb9, 0x05, 0x3c, 0xcc}, {0xb9, 0x06, 0x3c, 0xcc}, {0xb9, 0x07, 0x3c, 0xcc}, {0xb9, 0x08, 0x3c, 0xcc}, {0x00, 0x05, 0x00, 0xaa}, {0xb3, 0x5c, 0x00, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {} }; static const u8 po3130_rundata[][4] = { {0x00, 0x47, 0x45, 0xaa}, {0x00, 0x48, 0x9b, 0xaa}, {0x00, 0x49, 0x3a, 0xaa}, {0x00, 0x4a, 0x01, 0xaa}, {0x00, 0x44, 0x40, 0xaa}, /* {0x00, 0xd5, 0x7c, 0xaa}, */ {0x00, 0xad, 0x04, 0xaa}, {0x00, 0xae, 0x00, 0xaa}, {0x00, 0xb0, 0x78, 0xaa}, {0x00, 0x98, 0x02, 0xaa}, {0x00, 0x94, 0x25, 0xaa}, {0x00, 0x95, 0x25, 0xaa}, {0x00, 0x59, 0x68, 0xaa}, {0x00, 0x44, 0x20, 0xaa}, {0x00, 0x17, 0x50, 0xaa}, {0x00, 0x19, 0x50, 0xaa}, {0x00, 0xd1, 0x3c, 0xaa}, {0x00, 0xd1, 0x3c, 0xaa}, {0x00, 0x1e, 0x06, 0xaa}, {0x00, 0x1e, 0x06, 0xaa}, {} }; static const u8 po3130_initQVGA_data[][4] = { {0xb0, 0x4d, 0x00, 0xcc}, {0xb3, 0x01, 0x01, 0xcc}, {0x00, 0x00, 0x50, 0xdd}, {0xb0, 0x03, 0x09, 0xcc}, {0xb3, 0x00, 0x04, 0xcc}, {0xb3, 0x00, 0x24, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x03, 0x1a, 0xcc}, {0xb3, 0x04, 0x15, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb8, 0x08, 0xe0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0xf6, 0xcc}, {0xb3, 0x00, 0x27, 0xcc}, {0xbc, 0x00, 0xd1, 0xcc}, {0xb8, 0x00, 0x21, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x01, 0x79, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0xb8, 0x2c, 0x50, 0xcc}, {0xb8, 0x2d, 0xf8, 0xcc}, {0xb8, 0x2e, 0xf8, 0xcc}, {0xb8, 0x2f, 0xf8, 0xcc}, {0xb8, 0x30, 0x50, 0xcc}, {0xb8, 0x31, 0xf8, 0xcc}, {0xb8, 0x32, 0xf8, 0xcc}, {0xb8, 0x33, 0xf8, 0xcc}, {0xb8, 0x34, 0x50, 0xcc}, {0xb8, 0x35, 0x00, 0xcc}, {0xb8, 0x36, 0x00, 0xcc}, {0xb8, 0x37, 0x00, 0xcc}, {0x00, 0x1e, 0xc6, 0xaa}, {0x00, 0x20, 0x44, 0xaa}, {0x00, 0xad, 0x02, 0xaa}, {0x00, 0xae, 0x2c, 0xaa}, {0x00, 0x12, 0x08, 0xaa}, {0x00, 0x17, 0x41, 0xaa}, {0x00, 0x19, 0x41, 0xaa}, {0x00, 0x1e, 0x06, 0xaa}, {0x00, 0x21, 0x00, 0xaa}, {0x00, 0x36, 0xc0, 0xaa}, {0x00, 0x37, 0xc8, 0xaa}, {0x00, 0x3b, 0x36, 0xaa}, {0x00, 0x4b, 0xfe, 0xaa}, {0x00, 0x51, 0x1c, 0xaa}, {0x00, 0x52, 0x01, 0xaa}, {0x00, 0x55, 0x0a, 0xaa}, {0x00, 0x59, 0x6f, 0xaa}, {0x00, 0x5a, 0x04, 0xaa}, {0x00, 0x5c, 0x10, 0xaa}, {0x00, 0x5d, 0x10, 0xaa}, {0x00, 0x5e, 0x10, 0xaa}, {0x00, 0x5f, 0x10, 0xaa}, {0x00, 0x61, 0x00, 0xaa}, {0x00, 0x62, 0x18, 0xaa}, {0x00, 0x63, 0x30, 0xaa}, {0x00, 0x70, 0x68, 0xaa}, {0x00, 0x80, 0x71, 0xaa}, {0x00, 0x81, 0x08, 0xaa}, {0x00, 0x82, 0x00, 0xaa}, {0x00, 0x83, 0x55, 0xaa}, {0x00, 0x84, 0x06, 0xaa}, {0x00, 0x85, 0x06, 0xaa}, {0x00, 0x86, 0x13, 0xaa}, {0x00, 0x87, 0x18, 0xaa}, {0x00, 0xaa, 0x3f, 0xaa}, {0x00, 0xab, 0x44, 0xaa}, {0x00, 0xb0, 0x68, 0xaa}, {0x00, 0xb5, 0x10, 0xaa}, {0x00, 0xb8, 0x20, 0xaa}, {0x00, 0xb9, 0xa0, 0xaa}, {0x00, 0xbc, 0x04, 0xaa}, {0x00, 0x8b, 0x40, 0xaa}, {0x00, 0x8c, 0x91, 0xaa}, {0x00, 0x8d, 0x8f, 0xaa}, {0x00, 0x8e, 0x91, 0xaa}, {0x00, 0x8f, 0x43, 0xaa}, {0x00, 0x90, 0x92, 0xaa}, {0x00, 0x91, 0x89, 0xaa}, {0x00, 0x92, 0x9d, 0xaa}, {0x00, 0x93, 0x46, 0xaa}, {0x00, 0xd6, 0x22, 0xaa}, {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x10, 0xaa}, {0x00, 0x75, 0x20, 0xaa}, {0x00, 0x76, 0x2b, 0xaa}, {0x00, 0x77, 0x36, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0xd6, 0x62, 0xaa}, {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x10, 0xaa}, {0x00, 0x75, 0x20, 0xaa}, {0x00, 0x76, 0x2b, 0xaa}, {0x00, 0x77, 0x36, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0xd6, 0xa2, 0xaa}, {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x10, 0xaa}, {0x00, 0x75, 0x20, 0xaa}, {0x00, 0x76, 0x2b, 0xaa}, {0x00, 0x77, 0x36, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0x4c, 0x07, 0xaa}, {0x00, 0x4b, 0xe0, 0xaa}, {0x00, 0x4e, 0x77, 0xaa}, {0x00, 0x59, 0x66, 0xaa}, {0x00, 0x4d, 0x0a, 0xaa}, {0x00, 0xd1, 0x00, 0xaa}, {0x00, 0x20, 0xc4, 0xaa}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0xb8, 0xfe, 0x00, 0xcc}, {0xb8, 0xff, 0x28, 0xcc}, {0xb9, 0x00, 0x28, 0xcc}, {0xb9, 0x01, 0x28, 0xcc}, {0xb9, 0x02, 0x28, 0xcc}, {0xb9, 0x03, 0x00, 0xcc}, {0xb9, 0x04, 0x00, 0xcc}, {0xb9, 0x05, 0x3c, 0xcc}, {0xb9, 0x06, 0x3c, 0xcc}, {0xb9, 0x07, 0x3c, 0xcc}, {0xb9, 0x08, 0x3c, 0xcc}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0x00, 0x05, 0x00, 0xaa}, {0xb3, 0x5c, 0x00, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {} }; static const u8 hv7131r_gamma[17] = { 0x00, 0x13, 0x38, 0x59, 0x79, 0x92, 0xa7, 0xb9, 0xc8, 0xd4, 0xdf, 0xe7, 0xee, 0xf4, 0xf9, 0xfc, 0xff }; static const u8 hv7131r_matrix[9] = { 0x5f, 0xec, 0xf5, 0xf1, 0x5a, 0xf5, 0xf1, 0xec, 0x63 }; static const u8 hv7131r_initVGA_data[][4] = { {0xb3, 0x01, 0x01, 0xcc}, {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x20, 0xdd}, {0xb3, 0x00, 0x24, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x03, 0xcc}, {0xb3, 0x01, 0x45, 0xcc}, {0xb3, 0x03, 0x0b, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x02, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0x91, 0xcc}, /* i2c add: 11 */ {0xb3, 0x00, 0x27, 0xcc}, {0xbc, 0x00, 0x73, 0xcc}, {0xb8, 0x00, 0x23, 0xcc}, {0xb8, 0x2c, 0x50, 0xcc}, {0xb8, 0x2d, 0xf8, 0xcc}, {0xb8, 0x2e, 0xf8, 0xcc}, {0xb8, 0x2f, 0xf8, 0xcc}, {0xb8, 0x30, 0x50, 0xcc}, {0xb8, 0x31, 0xf8, 0xcc}, {0xb8, 0x32, 0xf8, 0xcc}, {0xb8, 0x33, 0xf8, 0xcc}, {0xb8, 0x34, 0x58, 0xcc}, {0xb8, 0x35, 0x00, 0xcc}, {0xb8, 0x36, 0x00, 0xcc}, {0xb8, 0x37, 0x00, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x01, 0x7d, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0x00, 0x01, 0x0c, 0xaa}, {0x00, 0x14, 0x01, 0xaa}, {0x00, 0x15, 0xe6, 0xaa}, {0x00, 0x16, 0x02, 0xaa}, {0x00, 0x17, 0x86, 0xaa}, {0x00, 0x23, 0x00, 0xaa}, {0x00, 0x25, 0x03, 0xaa}, {0x00, 0x26, 0xa9, 0xaa}, {0x00, 0x27, 0x80, 0xaa}, {0x00, 0x30, 0x18, 0xaa}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x02, 0xcc}, {0xb6, 0x02, 0x80, 0xcc}, {0xb6, 0x05, 0x01, 0xcc}, {0xb6, 0x04, 0xe0, 0xcc}, {0xb6, 0x12, 0x78, 0xcc}, {0xb6, 0x18, 0x02, 0xcc}, {0xb6, 0x17, 0x58, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xb3, 0x02, 0x02, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x10, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x13, 0xcc}, {0xb9, 0x12, 0x00, 0xcc}, {0xb9, 0x13, 0x0a, 0xcc}, {0xb9, 0x14, 0x0a, 0xcc}, {0xb9, 0x15, 0x0a, 0xcc}, {0xb9, 0x16, 0x0a, 0xcc}, {0xb8, 0x0c, 0x20, 0xcc}, {0xb8, 0x0d, 0x70, 0xcc}, {0xb9, 0x18, 0x00, 0xcc}, {0xb9, 0x19, 0x0f, 0xcc}, {0xb9, 0x1a, 0x0f, 0xcc}, {0xb9, 0x1b, 0x0f, 0xcc}, {0xb9, 0x1c, 0x0f, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {} }; static const u8 hv7131r_initQVGA_data[][4] = { {0xb3, 0x01, 0x01, 0xcc}, {0xb0, 0x03, 0x19, 0xcc}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x20, 0xdd}, {0xb3, 0x00, 0x24, 0xcc}, {0xb3, 0x00, 0x25, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x03, 0xcc}, {0xb3, 0x01, 0x45, 0xcc}, {0xb3, 0x03, 0x0b, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x02, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0x91, 0xcc}, {0xb3, 0x00, 0x27, 0xcc}, {0xbc, 0x00, 0xd3, 0xcc}, {0xb8, 0x00, 0x23, 0xcc}, {0xb8, 0x2c, 0x50, 0xcc}, {0xb8, 0x2d, 0xf8, 0xcc}, {0xb8, 0x2e, 0xf8, 0xcc}, {0xb8, 0x2f, 0xf8, 0xcc}, {0xb8, 0x30, 0x50, 0xcc}, {0xb8, 0x31, 0xf8, 0xcc}, {0xb8, 0x32, 0xf8, 0xcc}, {0xb8, 0x33, 0xf8, 0xcc}, {0xb8, 0x34, 0x58, 0xcc}, {0xb8, 0x35, 0x00, 0xcc}, {0xb8, 0x36, 0x00, 0xcc}, {0xb8, 0x37, 0x00, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x01, 0x7d, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0x00, 0x01, 0x0c, 0xaa}, {0x00, 0x14, 0x01, 0xaa}, {0x00, 0x15, 0xe6, 0xaa}, {0x00, 0x16, 0x02, 0xaa}, {0x00, 0x17, 0x86, 0xaa}, {0x00, 0x23, 0x00, 0xaa}, {0x00, 0x25, 0x03, 0xaa}, {0x00, 0x26, 0xa9, 0xaa}, {0x00, 0x27, 0x80, 0xaa}, {0x00, 0x30, 0x18, 0xaa}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x01, 0xcc}, {0xb6, 0x02, 0x40, 0xcc}, {0xb6, 0x05, 0x00, 0xcc}, {0xb6, 0x04, 0xf0, 0xcc}, {0xb6, 0x12, 0x78, 0xcc}, {0xb6, 0x18, 0x00, 0xcc}, {0xb6, 0x17, 0x96, 0xcc}, {0xb6, 0x16, 0x00, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xb3, 0x02, 0x02, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x10, 0xcc}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0xb9, 0x12, 0x00, 0xcc}, {0xb9, 0x13, 0x0a, 0xcc}, {0xb9, 0x14, 0x0a, 0xcc}, {0xb9, 0x15, 0x0a, 0xcc}, {0xb9, 0x16, 0x0a, 0xcc}, {0xb9, 0x18, 0x00, 0xcc}, {0xb9, 0x19, 0x0f, 0xcc}, {0xb8, 0x0c, 0x20, 0xcc}, {0xb8, 0x0d, 0x70, 0xcc}, {0xb9, 0x1a, 0x0f, 0xcc}, {0xb9, 0x1b, 0x0f, 0xcc}, {0xb9, 0x1c, 0x0f, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x13, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {} }; static const u8 ov7660_gamma[17] = { 0x00, 0x13, 0x38, 0x59, 0x79, 0x92, 0xa7, 0xb9, 0xc8, 0xd4, 0xdf, 0xe7, 0xee, 0xf4, 0xf9, 0xfc, 0xff }; static const u8 ov7660_matrix[9] = { 0x5a, 0xf0, 0xf6, 0xf3, 0x57, 0xf6, 0xf3, 0xef, 0x62 }; static const u8 ov7660_initVGA_data[][4] = { {0xb0, 0x4d, 0x00, 0xcc}, {0xb3, 0x01, 0x01, 0xcc}, {0x00, 0x00, 0x50, 0xdd}, {0xb0, 0x03, 0x01, 0xcc}, {0xb3, 0x00, 0x21, 0xcc}, {0xb3, 0x00, 0x26, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x03, 0xcc}, {0xb3, 0x03, 0x1f, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x15, 0x00, 0xcc},/* 0xb315 <-0 href startl */ {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x1d, 0x01, 0xcc}, {0xb3, 0x1f, 0x02, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0xa1, 0xcc}, /* i2c add: 21 */ {0xb3, 0x00, 0x26, 0xcc}, {0xb8, 0x00, 0x33, 0xcc}, /* 13 */ {0xb8, 0x01, 0x7d, 0xcc}, {0xbc, 0x00, 0x73, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x8f, 0x50, 0xcc}, {0x00, 0x01, 0x80, 0xaa}, {0x00, 0x02, 0x80, 0xaa}, {0x00, 0x12, 0x80, 0xaa}, {0x00, 0x12, 0x05, 0xaa}, {0x00, 0x1e, 0x01, 0xaa}, /* MVFP */ {0x00, 0x3d, 0x40, 0xaa}, /* 0x3d <-40 gamma 01 */ {0x00, 0x41, 0x00, 0xaa}, /* edge 00 */ {0x00, 0x0d, 0x48, 0xaa}, {0x00, 0x0e, 0x04, 0xaa}, {0x00, 0x13, 0xa7, 0xaa}, {0x00, 0x40, 0xc1, 0xaa}, {0x00, 0x35, 0x00, 0xaa}, {0x00, 0x36, 0x00, 0xaa}, {0x00, 0x3c, 0x68, 0xaa}, {0x00, 0x1b, 0x05, 0xaa}, {0x00, 0x39, 0x43, 0xaa}, {0x00, 0x8d, 0xcf, 0xaa}, {0x00, 0x8b, 0xcc, 0xaa}, {0x00, 0x8c, 0xcc, 0xaa}, {0x00, 0x0f, 0x62, 0xaa}, {0x00, 0x35, 0x84, 0xaa}, {0x00, 0x3b, 0x08, 0xaa}, /* 0 * Nightframe 1/4 + 50Hz -> 0xC8 */ {0x00, 0x3a, 0x00, 0xaa}, /* mx change yuyv format 00, 04, 01; 08, 0c*/ {0x00, 0x14, 0x2a, 0xaa}, /* agc ampli */ {0x00, 0x9e, 0x40, 0xaa}, {0xb8, 0x8f, 0x50, 0xcc}, {0x00, 0x01, 0x80, 0xaa}, {0x00, 0x02, 0x80, 0xaa}, {0xb8, 0xfe, 0x00, 0xcc}, {0xb8, 0xff, 0x28, 0xcc}, {0xb9, 0x00, 0x28, 0xcc}, {0xb9, 0x01, 0x28, 0xcc}, {0xb9, 0x02, 0x28, 0xcc}, {0xb9, 0x03, 0x00, 0xcc}, {0xb9, 0x04, 0x00, 0xcc}, {0xb9, 0x05, 0x3c, 0xcc}, {0xb9, 0x06, 0x3c, 0xcc}, {0xb9, 0x07, 0x3c, 0xcc}, {0xb9, 0x08, 0x3c, 0xcc}, {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, {0x00, 0x29, 0x3c, 0xaa}, {0xb3, 0x01, 0x45, 0xcc}, {} }; static const u8 ov7660_initQVGA_data[][4] = { {0xb0, 0x4d, 0x00, 0xcc}, {0xb3, 0x01, 0x01, 0xcc}, {0x00, 0x00, 0x50, 0xdd}, {0xb0, 0x03, 0x01, 0xcc}, {0xb3, 0x00, 0x21, 0xcc}, {0xb3, 0x00, 0x26, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x03, 0xcc}, {0xb3, 0x03, 0x1f, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x15, 0x00, 0xcc},/* 0xb315 <-0 href startl */ {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x1d, 0x01, 0xcc}, {0xb3, 0x1f, 0x02, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0xa1, 0xcc}, {0xb3, 0x00, 0x26, 0xcc}, {0xb8, 0x00, 0x33, 0xcc}, /* 13 */ {0xb8, 0x01, 0x7d, 0xcc}, /* sizer */ {0xbc, 0x00, 0xd3, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0xb8, 0x27, 0x20, 0xcc}, {0xb8, 0x8f, 0x50, 0xcc}, {0x00, 0x01, 0x80, 0xaa}, {0x00, 0x02, 0x80, 0xaa}, {0x00, 0x12, 0x80, 0xaa}, {0x00, 0x12, 0x05, 0xaa}, {0x00, 0x1e, 0x01, 0xaa}, /* MVFP */ {0x00, 0x3d, 0x40, 0xaa}, /* 0x3d <-40 gamma 01 */ {0x00, 0x41, 0x00, 0xaa}, /* edge 00 */ {0x00, 0x0d, 0x48, 0xaa}, {0x00, 0x0e, 0x04, 0xaa}, {0x00, 0x13, 0xa7, 0xaa}, {0x00, 0x40, 0xc1, 0xaa}, {0x00, 0x35, 0x00, 0xaa}, {0x00, 0x36, 0x00, 0xaa}, {0x00, 0x3c, 0x68, 0xaa}, {0x00, 0x1b, 0x05, 0xaa}, {0x00, 0x39, 0x43, 0xaa}, {0x00, 0x8d, 0xcf, 0xaa}, {0x00, 0x8b, 0xcc, 0xaa}, {0x00, 0x8c, 0xcc, 0xaa}, {0x00, 0x0f, 0x62, 0xaa}, {0x00, 0x35, 0x84, 0xaa}, {0x00, 0x3b, 0x08, 0xaa}, /* 0 * Nightframe 1/4 + 50Hz -> 0xC8 */ {0x00, 0x3a, 0x00, 0xaa}, /* mx change yuyv format 00, 04, 01; 08, 0c*/ {0x00, 0x14, 0x2a, 0xaa}, /* agc ampli */ {0x00, 0x9e, 0x40, 0xaa}, {0xb8, 0x8f, 0x50, 0xcc}, {0x00, 0x01, 0x80, 0xaa}, {0x00, 0x02, 0x80, 0xaa}, /* sizer filters */ {0xbc, 0x02, 0x08, 0xcc}, {0xbc, 0x03, 0x70, 0xcc}, {0xb8, 0x35, 0x00, 0xcc}, {0xb8, 0x36, 0x00, 0xcc}, {0xb8, 0x37, 0x00, 0xcc}, {0xbc, 0x04, 0x08, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x3c, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x04, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, /* */ {0xb8, 0xfe, 0x00, 0xcc}, {0xb8, 0xff, 0x28, 0xcc}, /* */ {0xb9, 0x00, 0x28, 0xcc}, {0xb9, 0x01, 0x28, 0xcc}, {0xb9, 0x02, 0x28, 0xcc}, {0xb9, 0x03, 0x00, 0xcc}, {0xb9, 0x04, 0x00, 0xcc}, {0xb9, 0x05, 0x3c, 0xcc}, {0xb9, 0x06, 0x3c, 0xcc}, {0xb9, 0x07, 0x3c, 0xcc}, {0xb9, 0x08, 0x3c, 0xcc}, /* */ {0xb8, 0x8e, 0x00, 0xcc}, {0xb8, 0x8f, 0xff, 0xcc}, /* ff */ {0x00, 0x29, 0x3c, 0xaa}, {0xb3, 0x01, 0x45, 0xcc}, /* 45 */ {} }; static const u8 ov7660_50HZ[][4] = { {0x00, 0x3b, 0x08, 0xaa}, {0x00, 0x9d, 0x40, 0xaa}, {0x00, 0x13, 0xa7, 0xaa}, {} }; static const u8 ov7660_60HZ[][4] = { {0x00, 0x3b, 0x00, 0xaa}, {0x00, 0x9e, 0x40, 0xaa}, {0x00, 0x13, 0xa7, 0xaa}, {} }; static const u8 ov7660_NoFlicker[][4] = { {0x00, 0x13, 0x87, 0xaa}, {} }; static const u8 ov7670_InitVGA[][4] = { {0xb3, 0x01, 0x05, 0xcc}, {0x00, 0x00, 0x30, 0xdd}, {0xb0, 0x03, 0x19, 0xcc}, {0x00, 0x00, 0x10, 0xdd}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x10, 0xdd}, {0xb3, 0x00, 0x66, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb0, 0x16, 0x01, 0xcc}, {0xb3, 0x35, 0xa1, 0xcc}, /* i2c add: 21 */ {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x02, 0x02, 0xcc}, {0xb3, 0x03, 0x1f, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xbc, 0x00, 0x41, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0x00, 0x12, 0x80, 0xaa}, {0x00, 0x00, 0x20, 0xdd}, {0x00, 0x12, 0x00, 0xaa}, {0x00, 0x11, 0x40, 0xaa}, {0x00, 0x6b, 0x0a, 0xaa}, {0x00, 0x3a, 0x04, 0xaa}, {0x00, 0x40, 0xc0, 0xaa}, {0x00, 0x8c, 0x00, 0xaa}, {0x00, 0x7a, 0x29, 0xaa}, {0x00, 0x7b, 0x0e, 0xaa}, {0x00, 0x7c, 0x1a, 0xaa}, {0x00, 0x7d, 0x31, 0xaa}, {0x00, 0x7e, 0x53, 0xaa}, {0x00, 0x7f, 0x60, 0xaa}, {0x00, 0x80, 0x6b, 0xaa}, {0x00, 0x81, 0x73, 0xaa}, {0x00, 0x82, 0x7b, 0xaa}, {0x00, 0x83, 0x82, 0xaa}, {0x00, 0x84, 0x89, 0xaa}, {0x00, 0x85, 0x96, 0xaa}, {0x00, 0x86, 0xa1, 0xaa}, {0x00, 0x87, 0xb7, 0xaa}, {0x00, 0x88, 0xcc, 0xaa}, {0x00, 0x89, 0xe1, 0xaa}, {0x00, 0x13, 0xe0, 0xaa}, {0x00, 0x00, 0x00, 0xaa}, {0x00, 0x10, 0x00, 0xaa}, {0x00, 0x0d, 0x40, 0xaa}, {0x00, 0x14, 0x28, 0xaa}, {0x00, 0xa5, 0x05, 0xaa}, {0x00, 0xab, 0x07, 0xaa}, {0x00, 0x24, 0x95, 0xaa}, {0x00, 0x25, 0x33, 0xaa}, {0x00, 0x26, 0xe3, 0xaa}, {0x00, 0x9f, 0x88, 0xaa}, {0x00, 0xa0, 0x78, 0xaa}, {0x00, 0x55, 0x90, 0xaa}, {0x00, 0xa1, 0x03, 0xaa}, {0x00, 0xa6, 0xe0, 0xaa}, {0x00, 0xa7, 0xd8, 0xaa}, {0x00, 0xa8, 0xf0, 0xaa}, {0x00, 0xa9, 0x90, 0xaa}, {0x00, 0xaa, 0x14, 0xaa}, {0x00, 0x13, 0xe5, 0xaa}, {0x00, 0x0e, 0x61, 0xaa}, {0x00, 0x0f, 0x4b, 0xaa}, {0x00, 0x16, 0x02, 0xaa}, {0x00, 0x1e, 0x07, 0xaa}, /* MVFP */ {0x00, 0x21, 0x02, 0xaa}, {0x00, 0x22, 0x91, 0xaa}, {0x00, 0x29, 0x07, 0xaa}, {0x00, 0x33, 0x0b, 0xaa}, {0x00, 0x35, 0x0b, 0xaa}, {0x00, 0x37, 0x1d, 0xaa}, {0x00, 0x38, 0x71, 0xaa}, {0x00, 0x39, 0x2a, 0xaa}, {0x00, 0x3c, 0x78, 0xaa}, {0x00, 0x4d, 0x40, 0xaa}, {0x00, 0x4e, 0x20, 0xaa}, {0x00, 0x74, 0x19, 0xaa}, {0x00, 0x8d, 0x4f, 0xaa}, {0x00, 0x8e, 0x00, 0xaa}, {0x00, 0x8f, 0x00, 0xaa}, {0x00, 0x90, 0x00, 0xaa}, {0x00, 0x91, 0x00, 0xaa}, {0x00, 0x96, 0x00, 0xaa}, {0x00, 0x9a, 0x80, 0xaa}, {0x00, 0xb0, 0x84, 0xaa}, {0x00, 0xb1, 0x0c, 0xaa}, {0x00, 0xb2, 0x0e, 0xaa}, {0x00, 0xb3, 0x82, 0xaa}, {0x00, 0xb8, 0x0a, 0xaa}, {0x00, 0x43, 0x14, 0xaa}, {0x00, 0x44, 0xf0, 0xaa}, {0x00, 0x45, 0x45, 0xaa}, {0x00, 0x46, 0x63, 0xaa}, {0x00, 0x47, 0x2d, 0xaa}, {0x00, 0x48, 0x46, 0xaa}, {0x00, 0x59, 0x88, 0xaa}, {0x00, 0x5a, 0xa0, 0xaa}, {0x00, 0x5b, 0xc6, 0xaa}, {0x00, 0x5c, 0x7d, 0xaa}, {0x00, 0x5d, 0x5f, 0xaa}, {0x00, 0x5e, 0x19, 0xaa}, {0x00, 0x6c, 0x0a, 0xaa}, {0x00, 0x6d, 0x55, 0xaa}, {0x00, 0x6e, 0x11, 0xaa}, {0x00, 0x6f, 0x9e, 0xaa}, {0x00, 0x69, 0x00, 0xaa}, {0x00, 0x6a, 0x40, 0xaa}, {0x00, 0x01, 0x40, 0xaa}, {0x00, 0x02, 0x40, 0xaa}, {0x00, 0x13, 0xe7, 0xaa}, {0x00, 0x5f, 0xf0, 0xaa}, {0x00, 0x60, 0xf0, 0xaa}, {0x00, 0x61, 0xf0, 0xaa}, {0x00, 0x27, 0xa0, 0xaa}, {0x00, 0x28, 0x80, 0xaa}, {0x00, 0x2c, 0x90, 0xaa}, {0x00, 0x4f, 0x66, 0xaa}, {0x00, 0x50, 0x66, 0xaa}, {0x00, 0x51, 0x00, 0xaa}, {0x00, 0x52, 0x22, 0xaa}, {0x00, 0x53, 0x5e, 0xaa}, {0x00, 0x54, 0x80, 0xaa}, {0x00, 0x58, 0x9e, 0xaa}, {0x00, 0x41, 0x08, 0xaa}, {0x00, 0x3f, 0x00, 0xaa}, {0x00, 0x75, 0x85, 0xaa}, {0x00, 0x76, 0xe1, 0xaa}, {0x00, 0x4c, 0x00, 0xaa}, {0x00, 0x77, 0x0a, 0xaa}, {0x00, 0x3d, 0x88, 0xaa}, {0x00, 0x4b, 0x09, 0xaa}, {0x00, 0xc9, 0x60, 0xaa}, {0x00, 0x41, 0x38, 0xaa}, {0x00, 0x62, 0x30, 0xaa}, {0x00, 0x63, 0x30, 0xaa}, {0x00, 0x64, 0x08, 0xaa}, {0x00, 0x94, 0x07, 0xaa}, {0x00, 0x95, 0x0b, 0xaa}, {0x00, 0x65, 0x00, 0xaa}, {0x00, 0x66, 0x05, 0xaa}, {0x00, 0x56, 0x50, 0xaa}, {0x00, 0x34, 0x11, 0xaa}, {0x00, 0xa4, 0x88, 0xaa}, {0x00, 0x96, 0x00, 0xaa}, {0x00, 0x97, 0x30, 0xaa}, {0x00, 0x98, 0x20, 0xaa}, {0x00, 0x99, 0x30, 0xaa}, {0x00, 0x9a, 0x84, 0xaa}, {0x00, 0x9b, 0x29, 0xaa}, {0x00, 0x9c, 0x03, 0xaa}, {0x00, 0x78, 0x04, 0xaa}, {0x00, 0x79, 0x01, 0xaa}, {0x00, 0xc8, 0xf0, 0xaa}, {0x00, 0x79, 0x0f, 0xaa}, {0x00, 0xc8, 0x00, 0xaa}, {0x00, 0x79, 0x10, 0xaa}, {0x00, 0xc8, 0x7e, 0xaa}, {0x00, 0x79, 0x0a, 0xaa}, {0x00, 0xc8, 0x80, 0xaa}, {0x00, 0x79, 0x0b, 0xaa}, {0x00, 0xc8, 0x01, 0xaa}, {0x00, 0x79, 0x0c, 0xaa}, {0x00, 0xc8, 0x0f, 0xaa}, {0x00, 0x79, 0x0d, 0xaa}, {0x00, 0xc8, 0x20, 0xaa}, {0x00, 0x79, 0x09, 0xaa}, {0x00, 0xc8, 0x80, 0xaa}, {0x00, 0x79, 0x02, 0xaa}, {0x00, 0xc8, 0xc0, 0xaa}, {0x00, 0x79, 0x03, 0xaa}, {0x00, 0xc8, 0x40, 0xaa}, {0x00, 0x79, 0x05, 0xaa}, {0x00, 0xc8, 0x30, 0xaa}, {0x00, 0x79, 0x26, 0xaa}, {0x00, 0x11, 0x40, 0xaa}, {0x00, 0x3a, 0x04, 0xaa}, {0x00, 0x12, 0x00, 0xaa}, {0x00, 0x40, 0xc0, 0xaa}, {0x00, 0x8c, 0x00, 0xaa}, {0x00, 0x17, 0x14, 0xaa}, {0x00, 0x18, 0x02, 0xaa}, {0x00, 0x32, 0x92, 0xaa}, {0x00, 0x19, 0x02, 0xaa}, {0x00, 0x1a, 0x7a, 0xaa}, {0x00, 0x03, 0x0a, 0xaa}, {0x00, 0x0c, 0x00, 0xaa}, {0x00, 0x3e, 0x00, 0xaa}, {0x00, 0x70, 0x3a, 0xaa}, {0x00, 0x71, 0x35, 0xaa}, {0x00, 0x72, 0x11, 0xaa}, {0x00, 0x73, 0xf0, 0xaa}, {0x00, 0xa2, 0x02, 0xaa}, {0x00, 0xb1, 0x00, 0xaa}, {0x00, 0xb1, 0x0c, 0xaa}, {0x00, 0x1e, 0x37, 0xaa}, /* MVFP */ {0x00, 0xaa, 0x14, 0xaa}, {0x00, 0x24, 0x80, 0xaa}, {0x00, 0x25, 0x74, 0xaa}, {0x00, 0x26, 0xd3, 0xaa}, {0x00, 0x0d, 0x00, 0xaa}, {0x00, 0x14, 0x18, 0xaa}, {0x00, 0x9d, 0x99, 0xaa}, {0x00, 0x9e, 0x7f, 0xaa}, {0x00, 0x64, 0x08, 0xaa}, {0x00, 0x94, 0x07, 0xaa}, {0x00, 0x95, 0x06, 0xaa}, {0x00, 0x66, 0x05, 0xaa}, {0x00, 0x41, 0x08, 0xaa}, {0x00, 0x3f, 0x00, 0xaa}, {0x00, 0x75, 0x07, 0xaa}, {0x00, 0x76, 0xe1, 0xaa}, {0x00, 0x4c, 0x00, 0xaa}, {0x00, 0x77, 0x00, 0xaa}, {0x00, 0x3d, 0xc2, 0xaa}, {0x00, 0x4b, 0x09, 0xaa}, {0x00, 0xc9, 0x60, 0xaa}, {0x00, 0x41, 0x38, 0xaa}, {0xbf, 0xc0, 0x26, 0xcc}, {0xbf, 0xc1, 0x02, 0xcc}, {0xbf, 0xcc, 0x04, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xb3, 0x01, 0x45, 0xcc}, {0x00, 0x77, 0x05, 0xaa}, {}, }; static const u8 ov7670_InitQVGA[][4] = { {0xb3, 0x01, 0x05, 0xcc}, {0x00, 0x00, 0x30, 0xdd}, {0xb0, 0x03, 0x19, 0xcc}, {0x00, 0x00, 0x10, 0xdd}, {0xb0, 0x04, 0x02, 0xcc}, {0x00, 0x00, 0x10, 0xdd}, {0xb3, 0x00, 0x66, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb0, 0x16, 0x01, 0xcc}, {0xb3, 0x35, 0xa1, 0xcc}, /* i2c add: 21 */ {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x02, 0x02, 0xcc}, {0xb3, 0x03, 0x1f, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x04, 0x05, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x01, 0xcc}, {0xb3, 0x23, 0xe0, 0xcc}, {0xbc, 0x00, 0xd1, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0x00, 0x12, 0x80, 0xaa}, {0x00, 0x00, 0x20, 0xdd}, {0x00, 0x12, 0x00, 0xaa}, {0x00, 0x11, 0x40, 0xaa}, {0x00, 0x6b, 0x0a, 0xaa}, {0x00, 0x3a, 0x04, 0xaa}, {0x00, 0x40, 0xc0, 0xaa}, {0x00, 0x8c, 0x00, 0xaa}, {0x00, 0x7a, 0x29, 0xaa}, {0x00, 0x7b, 0x0e, 0xaa}, {0x00, 0x7c, 0x1a, 0xaa}, {0x00, 0x7d, 0x31, 0xaa}, {0x00, 0x7e, 0x53, 0xaa}, {0x00, 0x7f, 0x60, 0xaa}, {0x00, 0x80, 0x6b, 0xaa}, {0x00, 0x81, 0x73, 0xaa}, {0x00, 0x82, 0x7b, 0xaa}, {0x00, 0x83, 0x82, 0xaa}, {0x00, 0x84, 0x89, 0xaa}, {0x00, 0x85, 0x96, 0xaa}, {0x00, 0x86, 0xa1, 0xaa}, {0x00, 0x87, 0xb7, 0xaa}, {0x00, 0x88, 0xcc, 0xaa}, {0x00, 0x89, 0xe1, 0xaa}, {0x00, 0x13, 0xe0, 0xaa}, {0x00, 0x00, 0x00, 0xaa}, {0x00, 0x10, 0x00, 0xaa}, {0x00, 0x0d, 0x40, 0xaa}, {0x00, 0x14, 0x28, 0xaa}, {0x00, 0xa5, 0x05, 0xaa}, {0x00, 0xab, 0x07, 0xaa}, {0x00, 0x24, 0x95, 0xaa}, {0x00, 0x25, 0x33, 0xaa}, {0x00, 0x26, 0xe3, 0xaa}, {0x00, 0x9f, 0x88, 0xaa}, {0x00, 0xa0, 0x78, 0xaa}, {0x00, 0x55, 0x90, 0xaa}, {0x00, 0xa1, 0x03, 0xaa}, {0x00, 0xa6, 0xe0, 0xaa}, {0x00, 0xa7, 0xd8, 0xaa}, {0x00, 0xa8, 0xf0, 0xaa}, {0x00, 0xa9, 0x90, 0xaa}, {0x00, 0xaa, 0x14, 0xaa}, {0x00, 0x13, 0xe5, 0xaa}, {0x00, 0x0e, 0x61, 0xaa}, {0x00, 0x0f, 0x4b, 0xaa}, {0x00, 0x16, 0x02, 0xaa}, {0x00, 0x1e, 0x07, 0xaa}, /* MVFP */ {0x00, 0x21, 0x02, 0xaa}, {0x00, 0x22, 0x91, 0xaa}, {0x00, 0x29, 0x07, 0xaa}, {0x00, 0x33, 0x0b, 0xaa}, {0x00, 0x35, 0x0b, 0xaa}, {0x00, 0x37, 0x1d, 0xaa}, {0x00, 0x38, 0x71, 0xaa}, {0x00, 0x39, 0x2a, 0xaa}, {0x00, 0x3c, 0x78, 0xaa}, {0x00, 0x4d, 0x40, 0xaa}, {0x00, 0x4e, 0x20, 0xaa}, {0x00, 0x74, 0x19, 0xaa}, {0x00, 0x8d, 0x4f, 0xaa}, {0x00, 0x8e, 0x00, 0xaa}, {0x00, 0x8f, 0x00, 0xaa}, {0x00, 0x90, 0x00, 0xaa}, {0x00, 0x91, 0x00, 0xaa}, {0x00, 0x96, 0x00, 0xaa}, {0x00, 0x9a, 0x80, 0xaa}, {0x00, 0xb0, 0x84, 0xaa}, {0x00, 0xb1, 0x0c, 0xaa}, {0x00, 0xb2, 0x0e, 0xaa}, {0x00, 0xb3, 0x82, 0xaa}, {0x00, 0xb8, 0x0a, 0xaa}, {0x00, 0x43, 0x14, 0xaa}, {0x00, 0x44, 0xf0, 0xaa}, {0x00, 0x45, 0x45, 0xaa}, {0x00, 0x46, 0x63, 0xaa}, {0x00, 0x47, 0x2d, 0xaa}, {0x00, 0x48, 0x46, 0xaa}, {0x00, 0x59, 0x88, 0xaa}, {0x00, 0x5a, 0xa0, 0xaa}, {0x00, 0x5b, 0xc6, 0xaa}, {0x00, 0x5c, 0x7d, 0xaa}, {0x00, 0x5d, 0x5f, 0xaa}, {0x00, 0x5e, 0x19, 0xaa}, {0x00, 0x6c, 0x0a, 0xaa}, {0x00, 0x6d, 0x55, 0xaa}, {0x00, 0x6e, 0x11, 0xaa}, {0x00, 0x6f, 0x9e, 0xaa}, {0x00, 0x69, 0x00, 0xaa}, {0x00, 0x6a, 0x40, 0xaa}, {0x00, 0x01, 0x40, 0xaa}, {0x00, 0x02, 0x40, 0xaa}, {0x00, 0x13, 0xe7, 0xaa}, {0x00, 0x5f, 0xf0, 0xaa}, {0x00, 0x60, 0xf0, 0xaa}, {0x00, 0x61, 0xf0, 0xaa}, {0x00, 0x27, 0xa0, 0xaa}, {0x00, 0x28, 0x80, 0xaa}, {0x00, 0x2c, 0x90, 0xaa}, {0x00, 0x4f, 0x66, 0xaa}, {0x00, 0x50, 0x66, 0xaa}, {0x00, 0x51, 0x00, 0xaa}, {0x00, 0x52, 0x22, 0xaa}, {0x00, 0x53, 0x5e, 0xaa}, {0x00, 0x54, 0x80, 0xaa}, {0x00, 0x58, 0x9e, 0xaa}, {0x00, 0x41, 0x08, 0xaa}, {0x00, 0x3f, 0x00, 0xaa}, {0x00, 0x75, 0x85, 0xaa}, {0x00, 0x76, 0xe1, 0xaa}, {0x00, 0x4c, 0x00, 0xaa}, {0x00, 0x77, 0x0a, 0xaa}, {0x00, 0x3d, 0x88, 0xaa}, {0x00, 0x4b, 0x09, 0xaa}, {0x00, 0xc9, 0x60, 0xaa}, {0x00, 0x41, 0x38, 0xaa}, {0x00, 0x62, 0x30, 0xaa}, {0x00, 0x63, 0x30, 0xaa}, {0x00, 0x64, 0x08, 0xaa}, {0x00, 0x94, 0x07, 0xaa}, {0x00, 0x95, 0x0b, 0xaa}, {0x00, 0x65, 0x00, 0xaa}, {0x00, 0x66, 0x05, 0xaa}, {0x00, 0x56, 0x50, 0xaa}, {0x00, 0x34, 0x11, 0xaa}, {0x00, 0xa4, 0x88, 0xaa}, {0x00, 0x96, 0x00, 0xaa}, {0x00, 0x97, 0x30, 0xaa}, {0x00, 0x98, 0x20, 0xaa}, {0x00, 0x99, 0x30, 0xaa}, {0x00, 0x9a, 0x84, 0xaa}, {0x00, 0x9b, 0x29, 0xaa}, {0x00, 0x9c, 0x03, 0xaa}, {0x00, 0x78, 0x04, 0xaa}, {0x00, 0x79, 0x01, 0xaa}, {0x00, 0xc8, 0xf0, 0xaa}, {0x00, 0x79, 0x0f, 0xaa}, {0x00, 0xc8, 0x00, 0xaa}, {0x00, 0x79, 0x10, 0xaa}, {0x00, 0xc8, 0x7e, 0xaa}, {0x00, 0x79, 0x0a, 0xaa}, {0x00, 0xc8, 0x80, 0xaa}, {0x00, 0x79, 0x0b, 0xaa}, {0x00, 0xc8, 0x01, 0xaa}, {0x00, 0x79, 0x0c, 0xaa}, {0x00, 0xc8, 0x0f, 0xaa}, {0x00, 0x79, 0x0d, 0xaa}, {0x00, 0xc8, 0x20, 0xaa}, {0x00, 0x79, 0x09, 0xaa}, {0x00, 0xc8, 0x80, 0xaa}, {0x00, 0x79, 0x02, 0xaa}, {0x00, 0xc8, 0xc0, 0xaa}, {0x00, 0x79, 0x03, 0xaa}, {0x00, 0xc8, 0x40, 0xaa}, {0x00, 0x79, 0x05, 0xaa}, {0x00, 0xc8, 0x30, 0xaa}, {0x00, 0x79, 0x26, 0xaa}, {0x00, 0x11, 0x40, 0xaa}, {0x00, 0x3a, 0x04, 0xaa}, {0x00, 0x12, 0x00, 0xaa}, {0x00, 0x40, 0xc0, 0xaa}, {0x00, 0x8c, 0x00, 0xaa}, {0x00, 0x17, 0x14, 0xaa}, {0x00, 0x18, 0x02, 0xaa}, {0x00, 0x32, 0x92, 0xaa}, {0x00, 0x19, 0x02, 0xaa}, {0x00, 0x1a, 0x7a, 0xaa}, {0x00, 0x03, 0x0a, 0xaa}, {0x00, 0x0c, 0x00, 0xaa}, {0x00, 0x3e, 0x00, 0xaa}, {0x00, 0x70, 0x3a, 0xaa}, {0x00, 0x71, 0x35, 0xaa}, {0x00, 0x72, 0x11, 0xaa}, {0x00, 0x73, 0xf0, 0xaa}, {0x00, 0xa2, 0x02, 0xaa}, {0x00, 0xb1, 0x00, 0xaa}, {0x00, 0xb1, 0x0c, 0xaa}, {0x00, 0x1e, 0x37, 0xaa}, /* MVFP */ {0x00, 0xaa, 0x14, 0xaa}, {0x00, 0x24, 0x80, 0xaa}, {0x00, 0x25, 0x74, 0xaa}, {0x00, 0x26, 0xd3, 0xaa}, {0x00, 0x0d, 0x00, 0xaa}, {0x00, 0x14, 0x18, 0xaa}, {0x00, 0x9d, 0x99, 0xaa}, {0x00, 0x9e, 0x7f, 0xaa}, {0x00, 0x64, 0x08, 0xaa}, {0x00, 0x94, 0x07, 0xaa}, {0x00, 0x95, 0x06, 0xaa}, {0x00, 0x66, 0x05, 0xaa}, {0x00, 0x41, 0x08, 0xaa}, {0x00, 0x3f, 0x00, 0xaa}, {0x00, 0x75, 0x07, 0xaa}, {0x00, 0x76, 0xe1, 0xaa}, {0x00, 0x4c, 0x00, 0xaa}, {0x00, 0x77, 0x00, 0xaa}, {0x00, 0x3d, 0xc2, 0xaa}, {0x00, 0x4b, 0x09, 0xaa}, {0x00, 0xc9, 0x60, 0xaa}, {0x00, 0x41, 0x38, 0xaa}, {0xbc, 0x02, 0x18, 0xcc}, {0xbc, 0x03, 0x50, 0xcc}, {0xbc, 0x04, 0x18, 0xcc}, {0xbc, 0x05, 0x00, 0xcc}, {0xbc, 0x06, 0x00, 0xcc}, {0xbc, 0x08, 0x30, 0xcc}, {0xbc, 0x09, 0x40, 0xcc}, {0xbc, 0x0a, 0x10, 0xcc}, {0xbc, 0x0b, 0x00, 0xcc}, {0xbc, 0x0c, 0x00, 0xcc}, {0xbf, 0xc0, 0x26, 0xcc}, {0xbf, 0xc1, 0x02, 0xcc}, {0xbf, 0xcc, 0x04, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xb3, 0x01, 0x45, 0xcc}, {0x00, 0x77, 0x05, 0xaa}, {}, }; /* PO1200 - values from usbvm326.inf and ms-win trace */ static const u8 po1200_gamma[17] = { 0x00, 0x13, 0x38, 0x59, 0x79, 0x92, 0xa7, 0xb9, 0xc8, 0xd4, 0xdf, 0xe7, 0xee, 0xf4, 0xf9, 0xfc, 0xff }; static const u8 po1200_matrix[9] = { 0x60, 0xf9, 0xe5, 0xe7, 0x50, 0x05, 0xf3, 0xe6, 0x5e }; static const u8 po1200_initVGA_data[][4] = { {0xb0, 0x03, 0x19, 0xcc}, /* reset? */ {0xb0, 0x03, 0x19, 0xcc}, /* {0x00, 0x00, 0x33, 0xdd}, */ {0xb0, 0x04, 0x02, 0xcc}, {0xb0, 0x02, 0x02, 0xcc}, {0xb3, 0x5d, 0x00, 0xcc}, {0xb3, 0x01, 0x01, 0xcc}, {0xb3, 0x00, 0x64, 0xcc}, {0xb3, 0x00, 0x65, 0xcc}, {0xb3, 0x05, 0x01, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb3, 0x02, 0xb2, 0xcc}, {0xb3, 0x03, 0x18, 0xcc}, {0xb3, 0x04, 0x15, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x02, 0xcc}, {0xb3, 0x23, 0x58, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x03, 0xcc}, {0xb3, 0x17, 0x1f, 0xcc}, {0xbc, 0x00, 0x71, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xb0, 0x54, 0x13, 0xcc}, {0xb3, 0x00, 0x67, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0xdc, 0xcc}, /* i2c add: 5c */ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x12, 0x05, 0xaa}, {0x00, 0x13, 0x02, 0xaa}, {0x00, 0x1e, 0xc6, 0xaa}, /* h/v flip */ {0x00, 0x21, 0x00, 0xaa}, {0x00, 0x25, 0x02, 0xaa}, {0x00, 0x3c, 0x4f, 0xaa}, {0x00, 0x3f, 0xe0, 0xaa}, {0x00, 0x42, 0xff, 0xaa}, {0x00, 0x45, 0x34, 0xaa}, {0x00, 0x55, 0xfe, 0xaa}, {0x00, 0x59, 0xd3, 0xaa}, {0x00, 0x5e, 0x04, 0xaa}, {0x00, 0x61, 0xb8, 0xaa}, /* sharpness */ {0x00, 0x62, 0x02, 0xaa}, {0x00, 0xa7, 0x31, 0xaa}, {0x00, 0xa9, 0x66, 0xaa}, {0x00, 0xb0, 0x00, 0xaa}, {0x00, 0xb1, 0x00, 0xaa}, {0x00, 0xb3, 0x11, 0xaa}, {0x00, 0xb6, 0x26, 0xaa}, {0x00, 0xb7, 0x20, 0xaa}, {0x00, 0xba, 0x04, 0xaa}, {0x00, 0x88, 0x42, 0xaa}, {0x00, 0x89, 0x9a, 0xaa}, {0x00, 0x8a, 0x88, 0xaa}, {0x00, 0x8b, 0x8e, 0xaa}, {0x00, 0x8c, 0x3e, 0xaa}, {0x00, 0x8d, 0x90, 0xaa}, {0x00, 0x8e, 0x87, 0xaa}, {0x00, 0x8f, 0x96, 0xaa}, {0x00, 0x90, 0x3d, 0xaa}, {0x00, 0x64, 0x00, 0xaa}, {0x00, 0x65, 0x10, 0xaa}, {0x00, 0x66, 0x20, 0xaa}, {0x00, 0x67, 0x2b, 0xaa}, {0x00, 0x68, 0x36, 0xaa}, {0x00, 0x69, 0x49, 0xaa}, {0x00, 0x6a, 0x5a, 0xaa}, {0x00, 0x6b, 0x7f, 0xaa}, {0x00, 0x6c, 0x9b, 0xaa}, {0x00, 0x6d, 0xba, 0xaa}, {0x00, 0x6e, 0xd4, 0xaa}, {0x00, 0x6f, 0xea, 0xaa}, {0x00, 0x70, 0x00, 0xaa}, {0x00, 0x71, 0x10, 0xaa}, {0x00, 0x72, 0x20, 0xaa}, {0x00, 0x73, 0x2b, 0xaa}, {0x00, 0x74, 0x36, 0xaa}, {0x00, 0x75, 0x49, 0xaa}, {0x00, 0x76, 0x5a, 0xaa}, {0x00, 0x77, 0x7f, 0xaa}, {0x00, 0x78, 0x9b, 0xaa}, {0x00, 0x79, 0xba, 0xaa}, {0x00, 0x7a, 0xd4, 0xaa}, {0x00, 0x7b, 0xea, 0xaa}, {0x00, 0x7c, 0x00, 0xaa}, {0x00, 0x7d, 0x10, 0xaa}, {0x00, 0x7e, 0x20, 0xaa}, {0x00, 0x7f, 0x2b, 0xaa}, {0x00, 0x80, 0x36, 0xaa}, {0x00, 0x81, 0x49, 0xaa}, {0x00, 0x82, 0x5a, 0xaa}, {0x00, 0x83, 0x7f, 0xaa}, {0x00, 0x84, 0x9b, 0xaa}, {0x00, 0x85, 0xba, 0xaa}, {0x00, 0x86, 0xd4, 0xaa}, {0x00, 0x87, 0xea, 0xaa}, {0x00, 0x57, 0x2a, 0xaa}, {0x00, 0x03, 0x01, 0xaa}, {0x00, 0x04, 0x10, 0xaa}, {0x00, 0x05, 0x10, 0xaa}, {0x00, 0x06, 0x10, 0xaa}, {0x00, 0x07, 0x10, 0xaa}, {0x00, 0x08, 0x13, 0xaa}, {0x00, 0x0a, 0x00, 0xaa}, {0x00, 0x0b, 0x10, 0xaa}, {0x00, 0x0c, 0x20, 0xaa}, {0x00, 0x0d, 0x18, 0xaa}, {0x00, 0x22, 0x01, 0xaa}, {0x00, 0x23, 0x60, 0xaa}, {0x00, 0x25, 0x08, 0xaa}, {0x00, 0x26, 0x82, 0xaa}, {0x00, 0x2e, 0x0f, 0xaa}, {0x00, 0x2f, 0x1e, 0xaa}, {0x00, 0x30, 0x2d, 0xaa}, {0x00, 0x31, 0x3c, 0xaa}, {0x00, 0x32, 0x4b, 0xaa}, {0x00, 0x33, 0x5a, 0xaa}, {0x00, 0x34, 0x69, 0xaa}, {0x00, 0x35, 0x78, 0xaa}, {0x00, 0x36, 0x87, 0xaa}, {0x00, 0x37, 0x96, 0xaa}, {0x00, 0x38, 0xa5, 0xaa}, {0x00, 0x39, 0xb4, 0xaa}, {0x00, 0x3a, 0xc3, 0xaa}, {0x00, 0x3b, 0xd2, 0xaa}, {0x00, 0x3c, 0xe1, 0xaa}, {0x00, 0x3e, 0xff, 0xaa}, {0x00, 0x3f, 0xff, 0xaa}, {0x00, 0x40, 0xff, 0xaa}, {0x00, 0x41, 0xff, 0xaa}, {0x00, 0x42, 0xff, 0xaa}, {0x00, 0x43, 0xff, 0xaa}, {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x20, 0xc4, 0xaa}, {0x00, 0x13, 0x03, 0xaa}, {0x00, 0x3c, 0x50, 0xaa}, {0x00, 0x61, 0x6a, 0xaa}, /* sharpness? */ {0x00, 0x51, 0x5b, 0xaa}, {0x00, 0x52, 0x91, 0xaa}, {0x00, 0x53, 0x4c, 0xaa}, {0x00, 0x54, 0x50, 0xaa}, {0x00, 0x56, 0x02, 0xaa}, {0xb6, 0x00, 0x00, 0xcc}, {0xb6, 0x03, 0x03, 0xcc}, {0xb6, 0x02, 0x20, 0xcc}, {0xb6, 0x05, 0x02, 0xcc}, {0xb6, 0x04, 0x58, 0xcc}, {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x21, 0xcc}, {0xb6, 0x18, 0x03, 0xcc}, {0xb6, 0x17, 0xa9, 0xcc}, {0xb6, 0x16, 0x80, 0xcc}, {0xb6, 0x22, 0x12, 0xcc}, {0xb6, 0x23, 0x0b, 0xcc}, {0xbf, 0xc0, 0x39, 0xcc}, {0xbf, 0xc1, 0x04, 0xcc}, {0xbf, 0xcc, 0x00, 0xcc}, {0xb8, 0x06, 0x20, 0xcc}, {0xb8, 0x07, 0x03, 0xcc}, {0xb8, 0x08, 0x58, 0xcc}, {0xb8, 0x09, 0x02, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0x00, 0x03, 0x00, 0xaa}, {0x00, 0xd9, 0x0f, 0xaa}, {0x00, 0xda, 0xaa, 0xaa}, {0x00, 0xd9, 0x10, 0xaa}, {0x00, 0xda, 0xaa, 0xaa}, {0x00, 0xd9, 0x11, 0xaa}, {0x00, 0xda, 0x00, 0xaa}, {0x00, 0xd9, 0x12, 0xaa}, {0x00, 0xda, 0xff, 0xaa}, {0x00, 0xd9, 0x13, 0xaa}, {0x00, 0xda, 0xff, 0xaa}, {0x00, 0xe8, 0x11, 0xaa}, {0x00, 0xe9, 0x12, 0xaa}, {0x00, 0xea, 0x5c, 0xaa}, {0x00, 0xeb, 0xff, 0xaa}, {0x00, 0xd8, 0x80, 0xaa}, {0x00, 0xe6, 0x02, 0xaa}, {0x00, 0xd6, 0x40, 0xaa}, {0x00, 0xe3, 0x05, 0xaa}, {0x00, 0xe0, 0x40, 0xaa}, {0x00, 0xde, 0x03, 0xaa}, {0x00, 0xdf, 0x03, 0xaa}, {0x00, 0xdb, 0x02, 0xaa}, {0x00, 0xdc, 0x00, 0xaa}, {0x00, 0xdd, 0x03, 0xaa}, {0x00, 0xe1, 0x08, 0xaa}, {0x00, 0xe2, 0x01, 0xaa}, {0x00, 0xd6, 0x40, 0xaa}, {0x00, 0xe4, 0x40, 0xaa}, {0x00, 0xa8, 0x8f, 0xaa}, {0x00, 0xb4, 0x16, 0xaa}, {0xb0, 0x02, 0x06, 0xcc}, {0xb0, 0x18, 0x06, 0xcc}, {0xb0, 0x19, 0x06, 0xcc}, {0xb3, 0x5d, 0x18, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0x00, 0xb4, 0x0e, 0xaa}, {0x00, 0xb5, 0x49, 0xaa}, {0x00, 0xb6, 0x1c, 0xaa}, {0x00, 0xb7, 0x96, 0xaa}, /* end of usbvm326.inf - start of ms-win trace */ {0xb6, 0x12, 0xf8, 0xcc}, {0xb6, 0x13, 0x3d, 0xcc}, /*read b306*/ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x1a, 0x09, 0xaa}, {0x00, 0x1b, 0x8a, 0xaa}, /*read b827*/ {0xb8, 0x27, 0x00, 0xcc}, {0xb8, 0x26, 0x60, 0xcc}, {0xb8, 0x26, 0x60, 0xcc}, /*gamma - to do?*/ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0xae, 0x84, 0xaa}, /*gamma again*/ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x96, 0xa0, 0xaa}, /*matrix*/ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x91, 0x35, 0xaa}, {0x00, 0x92, 0x22, 0xaa}, /*gamma*/ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x95, 0x85, 0xaa}, /*matrix*/ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x4d, 0x20, 0xaa}, {0xb8, 0x22, 0x40, 0xcc}, {0xb8, 0x23, 0x40, 0xcc}, {0xb8, 0x24, 0x40, 0xcc}, {0xb8, 0x81, 0x09, 0xcc}, {0x00, 0x00, 0x64, 0xdd}, {0x00, 0x03, 0x01, 0xaa}, /*read 46*/ {0x00, 0x46, 0x3c, 0xaa}, {0x00, 0x03, 0x00, 0xaa}, {0x00, 0x16, 0x40, 0xaa}, {0x00, 0x17, 0x40, 0xaa}, {0x00, 0x18, 0x40, 0xaa}, {0x00, 0x19, 0x41, 0xaa}, {0x00, 0x03, 0x01, 0xaa}, {0x00, 0x46, 0x3c, 0xaa}, {0x00, 0x00, 0x18, 0xdd}, /*read bfff*/ {0x00, 0x03, 0x00, 0xaa}, {0x00, 0xb4, 0x1c, 0xaa}, {0x00, 0xb5, 0x92, 0xaa}, {0x00, 0xb6, 0x39, 0xaa}, {0x00, 0xb7, 0x24, 0xaa}, /*write 89 0400 1415*/ {} }; static const u8 poxxxx_init_common[][4] = { {0xb3, 0x00, 0x04, 0xcc}, {0x00, 0x00, 0x10, 0xdd}, {0xb3, 0x00, 0x64, 0xcc}, {0x00, 0x00, 0x10, 0xdd}, {0xb3, 0x00, 0x65, 0xcc}, {0x00, 0x00, 0x10, 0xdd}, {0xb3, 0x00, 0x67, 0xcc}, {0xb0, 0x03, 0x09, 0xcc}, {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0xb3, 0x08, 0x01, 0xcc}, {0xb3, 0x09, 0x0c, 0xcc}, {0xb3, 0x34, 0x01, 0xcc}, {0xb3, 0x35, 0xf6, 0xcc}, /* i2c add: 76 */ {0xb3, 0x02, 0xb0, 0xcc}, {0xb3, 0x03, 0x18, 0xcc}, {0xb3, 0x04, 0x15, 0xcc}, {0xb3, 0x20, 0x00, 0xcc}, {0xb3, 0x21, 0x00, 0xcc}, {0xb3, 0x22, 0x04, 0xcc}, /* sensor height = 1024 */ {0xb3, 0x23, 0x00, 0xcc}, {0xb3, 0x14, 0x00, 0xcc}, {0xb3, 0x15, 0x00, 0xcc}, {0xb3, 0x16, 0x04, 0xcc}, /* sensor width = 1280 */ {0xb3, 0x17, 0xff, 0xcc}, {0xb3, 0x2c, 0x03, 0xcc}, {0xb3, 0x2d, 0x56, 0xcc}, {0xb3, 0x2e, 0x02, 0xcc}, {0xb3, 0x2f, 0x0a, 0xcc}, {0xb3, 0x40, 0x00, 0xcc}, {0xb3, 0x41, 0x34, 0xcc}, {0xb3, 0x42, 0x01, 0xcc}, {0xb3, 0x43, 0xe0, 0xcc}, {0xbc, 0x00, 0x71, 0xcc}, {0xbc, 0x01, 0x01, 0xcc}, {0xb3, 0x01, 0x41, 0xcc}, {0xb3, 0x4d, 0x00, 0xcc}, {0x00, 0x0b, 0x2a, 0xaa}, {0x00, 0x0e, 0x03, 0xaa}, {0x00, 0x0f, 0xea, 0xaa}, {0x00, 0x12, 0x08, 0xaa}, {0x00, 0x1e, 0x06, 0xaa}, {0x00, 0x21, 0x00, 0xaa}, {0x00, 0x31, 0x1f, 0xaa}, {0x00, 0x33, 0x38, 0xaa}, {0x00, 0x36, 0xc0, 0xaa}, {0x00, 0x37, 0xc8, 0xaa}, {0x00, 0x3b, 0x36, 0xaa}, {0x00, 0x4b, 0xfe, 0xaa}, {0x00, 0x4d, 0x2e, 0xaa}, {0x00, 0x51, 0x1c, 0xaa}, {0x00, 0x52, 0x01, 0xaa}, {0x00, 0x55, 0x0a, 0xaa}, {0x00, 0x56, 0x0a, 0xaa}, {0x00, 0x57, 0x07, 0xaa}, {0x00, 0x58, 0x07, 0xaa}, {0x00, 0x59, 0x04, 0xaa}, {0x00, 0x70, 0x68, 0xaa}, {0x00, 0x71, 0x04, 0xaa}, {0x00, 0x72, 0x10, 0xaa}, {0x00, 0x80, 0x71, 0xaa}, {0x00, 0x81, 0x08, 0xaa}, {0x00, 0x82, 0x00, 0xaa}, {0x00, 0x83, 0x55, 0xaa}, {0x00, 0x84, 0x06, 0xaa}, {0x00, 0x85, 0x06, 0xaa}, {0x00, 0x8b, 0x25, 0xaa}, {0x00, 0x8c, 0x00, 0xaa}, {0x00, 0x8d, 0x86, 0xaa}, {0x00, 0x8e, 0x82, 0xaa}, {0x00, 0x8f, 0x2d, 0xaa}, {0x00, 0x90, 0x8b, 0xaa}, {0x00, 0x91, 0x81, 0xaa}, {0x00, 0x92, 0x81, 0xaa}, {0x00, 0x93, 0x23, 0xaa}, {0x00, 0xa3, 0x2a, 0xaa}, {0x00, 0xa4, 0x03, 0xaa}, {0x00, 0xa5, 0xea, 0xaa}, {0x00, 0xb0, 0x68, 0xaa}, {0x00, 0xbc, 0x04, 0xaa}, {0x00, 0xbe, 0x3b, 0xaa}, {0x00, 0x4e, 0x40, 0xaa}, {0x00, 0x06, 0x04, 0xaa}, {0x00, 0x07, 0x03, 0xaa}, {0x00, 0xcd, 0x18, 0xaa}, {0x00, 0x28, 0x03, 0xaa}, {0x00, 0x29, 0xef, 0xaa}, /* reinit on alt 2 (qvga) or alt7 (vga) */ {0xb3, 0x05, 0x00, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0xb8, 0x00, 0x01, 0xcc}, {0x00, 0x1d, 0x85, 0xaa}, {0x00, 0x1e, 0xc6, 0xaa}, {0x00, 0x00, 0x40, 0xdd}, {0x00, 0x1d, 0x05, 0xaa}, {} }; static const u8 poxxxx_gamma[][4] = { {0x00, 0xd6, 0x22, 0xaa}, /* gamma 0 */ {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x0a, 0xaa}, {0x00, 0x75, 0x16, 0xaa}, {0x00, 0x76, 0x25, 0xaa}, {0x00, 0x77, 0x34, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0xd6, 0x62, 0xaa}, /* gamma 1 */ {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x0a, 0xaa}, {0x00, 0x75, 0x16, 0xaa}, {0x00, 0x76, 0x25, 0xaa}, {0x00, 0x77, 0x34, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {0x00, 0xd6, 0xa2, 0xaa}, /* gamma 2 */ {0x00, 0x73, 0x00, 0xaa}, {0x00, 0x74, 0x0a, 0xaa}, {0x00, 0x75, 0x16, 0xaa}, {0x00, 0x76, 0x25, 0xaa}, {0x00, 0x77, 0x34, 0xaa}, {0x00, 0x78, 0x49, 0xaa}, {0x00, 0x79, 0x5a, 0xaa}, {0x00, 0x7a, 0x7f, 0xaa}, {0x00, 0x7b, 0x9b, 0xaa}, {0x00, 0x7c, 0xba, 0xaa}, {0x00, 0x7d, 0xd4, 0xaa}, {0x00, 0x7e, 0xea, 0xaa}, {} }; static const u8 poxxxx_init_start_3[][4] = { {0x00, 0xb8, 0x28, 0xaa}, {0x00, 0xb9, 0x1e, 0xaa}, {0x00, 0xb6, 0x14, 0xaa}, {0x00, 0xb7, 0x0f, 0xaa}, {0x00, 0x5c, 0x10, 0xaa}, {0x00, 0x5d, 0x18, 0xaa}, {0x00, 0x5e, 0x24, 0xaa}, {0x00, 0x5f, 0x24, 0xaa}, {0x00, 0x86, 0x1a, 0xaa}, {0x00, 0x60, 0x00, 0xaa}, {0x00, 0x61, 0x1b, 0xaa}, {0x00, 0x62, 0x30, 0xaa}, {0x00, 0x63, 0x40, 0xaa}, {0x00, 0x87, 0x1a, 0xaa}, {0x00, 0x64, 0x00, 0xaa}, {0x00, 0x65, 0x08, 0xaa}, {0x00, 0x66, 0x10, 0xaa}, {0x00, 0x67, 0x20, 0xaa}, {0x00, 0x88, 0x10, 0xaa}, {0x00, 0x68, 0x00, 0xaa}, {0x00, 0x69, 0x08, 0xaa}, {0x00, 0x6a, 0x0f, 0xaa}, {0x00, 0x6b, 0x0f, 0xaa}, {0x00, 0x89, 0x07, 0xaa}, {0x00, 0xd5, 0x4c, 0xaa}, {0x00, 0x0a, 0x00, 0xaa}, {0x00, 0x0b, 0x2a, 0xaa}, {0x00, 0x0e, 0x03, 0xaa}, {0x00, 0x0f, 0xea, 0xaa}, {0x00, 0xa2, 0x00, 0xaa}, {0x00, 0xa3, 0x2a, 0xaa}, {0x00, 0xa4, 0x03, 0xaa}, {0x00, 0xa5, 0xea, 0xaa}, {} }; static const u8 poxxxx_initVGA[][4] = { {0x00, 0x20, 0x11, 0xaa}, {0x00, 0x33, 0x38, 0xaa}, {0x00, 0xbb, 0x0d, 0xaa}, {0xb3, 0x22, 0x01, 0xcc}, /* change to 640x480 */ {0xb3, 0x23, 0xe0, 0xcc}, {0xb3, 0x16, 0x02, 0xcc}, {0xb3, 0x17, 0x7f, 0xcc}, {0xb3, 0x02, 0xb0, 0xcc}, {0xb3, 0x06, 0x00, 0xcc}, {0xb3, 0x5c, 0x01, 0xcc}, {0x00, 0x04, 0x06, 0xaa}, {0x00, 0x05, 0x3f, 0xaa}, {0x00, 0x04, 0x00, 0xdd}, /* delay 1s */ {} }; static const u8 poxxxx_initQVGA[][4] = { {0x00, 0x20, 0x33, 0xaa}, {0x00, 0x33, 0x38, 0xaa}, {0x00, 0xbb, 0x0d, 0xaa}, {0xb3, 0x22, 0x00, 0xcc}, /* change to 320x240 */ {0xb3, 0x23, 0xf0, 0xcc}, {0xb3, 0x16, 0x01, 0xcc}, {0xb3, 0x17, 0x3f, 0xcc}, {0xb3, 0x02, 0xb0, 0xcc}, {0xb3, 0x06, 0x01, 0xcc}, {0xb3, 0x5c, 0x00, 0xcc}, {0x00, 0x04, 0x06, 0xaa}, {0x00, 0x05, 0x3f, 0xaa}, {0x00, 0x04, 0x00, 0xdd}, /* delay 1s */ {} }; static const u8 poxxxx_init_end_1[][4] = { {0x00, 0x47, 0x25, 0xaa}, {0x00, 0x48, 0x80, 0xaa}, {0x00, 0x49, 0x1f, 0xaa}, {0x00, 0x4a, 0x40, 0xaa}, {0x00, 0x44, 0x40, 0xaa}, {0x00, 0xab, 0x4a, 0xaa}, {0x00, 0xb1, 0x00, 0xaa}, {0x00, 0xb2, 0x04, 0xaa}, {0x00, 0xb3, 0x08, 0xaa}, {0x00, 0xb4, 0x0b, 0xaa}, {0x00, 0xb5, 0x0d, 0xaa}, {} }; static const u8 poxxxx_init_end_2[][4] = { {0x00, 0x1d, 0x85, 0xaa}, {0x00, 0x1e, 0x06, 0xaa}, {0x00, 0x1d, 0x05, 0xaa}, {} }; struct sensor_info { s8 sensorId; u8 I2cAdd; u8 IdAdd; u16 VpId; u8 m1; u8 m2; u8 op; }; /* probe values */ static const struct sensor_info vc0321_probe_data[] = { /* sensorId, I2cAdd, IdAdd, VpId, m1, m2, op */ /* 0 OV9640 */ {-1, 0x80 | 0x30, 0x0a, 0x0000, 0x25, 0x24, 0x05}, /* 1 ICM108T (may respond on IdAdd == 0x83 - tested in vc032x_probe_sensor) */ {-1, 0x80 | 0x20, 0x82, 0x0000, 0x24, 0x25, 0x01}, /* 2 PO2130 (may detect PO3130NC - tested in vc032x_probe_sensor)*/ {-1, 0x80 | 0x76, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* 3 MI1310 */ {-1, 0x80 | 0x5d, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* 4 MI360 - tested in vc032x_probe_sensor */ /* {SENSOR_MI0360, 0x80 | 0x5d, 0x00, 0x8243, 0x24, 0x25, 0x01}, */ /* 5 7131R */ {SENSOR_HV7131R, 0x80 | 0x11, 0x00, 0x0209, 0x24, 0x25, 0x01}, /* 6 OV7649 */ {-1, 0x80 | 0x21, 0x0a, 0x0000, 0x21, 0x20, 0x05}, /* 7 PAS302BCW */ {-1, 0x80 | 0x40, 0x00, 0x0000, 0x20, 0x22, 0x05}, /* 8 OV7660 */ {SENSOR_OV7660, 0x80 | 0x21, 0x0a, 0x7660, 0x26, 0x26, 0x05}, /* 9 PO3130NC - (tested in vc032x_probe_sensor) */ /* {SENSOR_PO3130NC, 0x80 | 0x76, 0x00, 0x3130, 0x24, 0x25, 0x01}, */ /* 10 PO1030KC */ {-1, 0x80 | 0x6e, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* 11 MI1310_SOC */ {SENSOR_MI1310_SOC, 0x80 | 0x5d, 0x00, 0x143a, 0x24, 0x25, 0x01}, /* 12 OV9650 */ {-1, 0x80 | 0x30, 0x0a, 0x0000, 0x25, 0x24, 0x05}, /* 13 S5K532 */ {-1, 0x80 | 0x11, 0x39, 0x0000, 0x24, 0x25, 0x01}, /* 14 MI360_SOC - ??? */ /* 15 PO1200N */ {SENSOR_PO1200, 0x80 | 0x5c, 0x00, 0x1200, 0x67, 0x67, 0x01}, /* 16 PO3030K */ {-1, 0x80 | 0x18, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* 17 PO2030 */ {-1, 0x80 | 0x6e, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* ?? */ {-1, 0x80 | 0x56, 0x01, 0x0000, 0x64, 0x67, 0x01}, {SENSOR_MI1320, 0x80 | 0x48, 0x00, 0x148c, 0x64, 0x65, 0x01}, }; static const struct sensor_info vc0323_probe_data[] = { /* sensorId, I2cAdd, IdAdd, VpId, m1, m2, op */ /* 0 OV9640 */ {-1, 0x80 | 0x30, 0x0a, 0x0000, 0x25, 0x24, 0x05}, /* 1 ICM108T (may respond on IdAdd == 0x83 - tested in vc032x_probe_sensor) */ {-1, 0x80 | 0x20, 0x82, 0x0000, 0x24, 0x25, 0x01}, /* 2 PO2130 (may detect PO3130NC - tested in vc032x_probe_sensor)*/ {-1, 0x80 | 0x76, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* 3 MI1310 */ {-1, 0x80 | 0x5d, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* 4 MI360 - tested in vc032x_probe_sensor */ /* {SENSOR_MI0360, 0x80 | 0x5d, 0x00, 0x8243, 0x24, 0x25, 0x01}, */ /* 5 7131R */ {SENSOR_HV7131R, 0x80 | 0x11, 0x00, 0x0209, 0x24, 0x25, 0x01}, /* 6 OV7649 */ {-1, 0x80 | 0x21, 0x0a, 0x0000, 0x21, 0x20, 0x05}, /* 7 PAS302BCW */ {-1, 0x80 | 0x40, 0x00, 0x0000, 0x20, 0x22, 0x05}, /* 8 OV7660 */ {SENSOR_OV7660, 0x80 | 0x21, 0x0a, 0x7660, 0x26, 0x26, 0x05}, /* 9 PO3130NC - (tested in vc032x_probe_sensor) */ /* {SENSOR_PO3130NC, 0x80 | 0x76, 0x00, 0x3130, 0x24, 0x25, 0x01}, */ /* 10 PO1030KC */ {-1, 0x80 | 0x6e, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* 11 MI1310_SOC */ {SENSOR_MI1310_SOC, 0x80 | 0x5d, 0x00, 0x143a, 0x24, 0x25, 0x01}, /* 12 OV9650 */ {-1, 0x80 | 0x30, 0x0a, 0x0000, 0x25, 0x24, 0x05}, /* 13 S5K532 */ {-1, 0x80 | 0x11, 0x39, 0x0000, 0x24, 0x25, 0x01}, /* 14 MI360_SOC - ??? */ /* 15 PO1200N */ {SENSOR_PO1200, 0x80 | 0x5c, 0x00, 0x1200, 0x67, 0x67, 0x01}, /* 16 ?? */ {-1, 0x80 | 0x2d, 0x00, 0x0000, 0x65, 0x67, 0x01}, /* 17 PO2030 */ {-1, 0x80 | 0x6e, 0x00, 0x0000, 0x24, 0x25, 0x01}, /* ?? */ {-1, 0x80 | 0x56, 0x01, 0x0000, 0x64, 0x67, 0x01}, {SENSOR_MI1320_SOC, 0x80 | 0x48, 0x00, 0x148c, 0x64, 0x67, 0x01}, /*fixme: not in the ms-win probe - may be found before? */ {SENSOR_OV7670, 0x80 | 0x21, 0x0a, 0x7673, 0x66, 0x67, 0x05}, }; /* read 'len' bytes in gspca_dev->usb_buf */ static void reg_r_i(struct gspca_dev *gspca_dev, u16 req, u16 index, u16 len) { int ret; if (gspca_dev->usb_err < 0) return; ret = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0), req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 1, /* value */ index, gspca_dev->usb_buf, len, 500); if (ret < 0) { pr_err("reg_r err %d\n", ret); gspca_dev->usb_err = ret; /* * Make sure the buffer is zeroed to avoid uninitialized * values. */ memset(gspca_dev->usb_buf, 0, USB_BUF_SZ); } } static void reg_r(struct gspca_dev *gspca_dev, u16 req, u16 index, u16 len) { reg_r_i(gspca_dev, req, index, len); if (gspca_dev->usb_err < 0) return; if (len == 1) gspca_dbg(gspca_dev, D_USBI, "GET %02x 0001 %04x %02x\n", req, index, gspca_dev->usb_buf[0]); else gspca_dbg(gspca_dev, D_USBI, "GET %02x 0001 %04x %*ph\n", req, index, 3, gspca_dev->usb_buf); } static void reg_w_i(struct gspca_dev *gspca_dev, u16 req, u16 value, u16 index) { int ret; if (gspca_dev->usb_err < 0) return; ret = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), req, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); if (ret < 0) { pr_err("reg_w err %d\n", ret); gspca_dev->usb_err = ret; } } static void reg_w(struct gspca_dev *gspca_dev, u16 req, u16 value, u16 index) { if (gspca_dev->usb_err < 0) return; gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x\n", req, value, index); reg_w_i(gspca_dev, req, value, index); } static u16 read_sensor_register(struct gspca_dev *gspca_dev, u16 address) { u8 ldata, mdata, hdata; int retry = 50; reg_r(gspca_dev, 0xa1, 0xb33f, 1); if (!(gspca_dev->usb_buf[0] & 0x02)) { pr_err("I2c Bus Busy Wait %02x\n", gspca_dev->usb_buf[0]); return 0; } reg_w(gspca_dev, 0xa0, address, 0xb33a); reg_w(gspca_dev, 0xa0, 0x02, 0xb339); do { reg_r(gspca_dev, 0xa1, 0xb33b, 1); if (gspca_dev->usb_buf[0] == 0x00) break; msleep(40); } while (--retry >= 0); reg_r(gspca_dev, 0xa1, 0xb33e, 1); ldata = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0xa1, 0xb33d, 1); mdata = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0xa1, 0xb33c, 1); hdata = gspca_dev->usb_buf[0]; if (hdata != 0 && mdata != 0 && ldata != 0) gspca_dbg(gspca_dev, D_PROBE, "Read Sensor %02x%02x %02x\n", hdata, mdata, ldata); reg_r(gspca_dev, 0xa1, 0xb334, 1); if (gspca_dev->usb_buf[0] == 0x02) return (hdata << 8) + mdata; return hdata; } static int vc032x_probe_sensor(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int i, n; u16 value; const struct sensor_info *ptsensor_info; /*fixme: should also check the other sensor (back mi1320_soc, front mc501cb)*/ if (sd->flags & FL_SAMSUNG) { reg_w(gspca_dev, 0xa0, 0x01, 0xb301); reg_w(gspca_dev, 0x89, 0xf0ff, 0xffff); /* select the back sensor */ } reg_r(gspca_dev, 0xa1, 0xbfcf, 1); gspca_dbg(gspca_dev, D_PROBE, "vc032%d check sensor header %02x\n", sd->bridge == BRIDGE_VC0321 ? 1 : 3, gspca_dev->usb_buf[0]); if (sd->bridge == BRIDGE_VC0321) { ptsensor_info = vc0321_probe_data; n = ARRAY_SIZE(vc0321_probe_data); } else { ptsensor_info = vc0323_probe_data; n = ARRAY_SIZE(vc0323_probe_data); } for (i = 0; i < n; i++) { reg_w(gspca_dev, 0xa0, 0x02, 0xb334); reg_w(gspca_dev, 0xa0, ptsensor_info->m1, 0xb300); reg_w(gspca_dev, 0xa0, ptsensor_info->m2, 0xb300); reg_w(gspca_dev, 0xa0, 0x01, 0xb308); reg_w(gspca_dev, 0xa0, 0x0c, 0xb309); reg_w(gspca_dev, 0xa0, ptsensor_info->I2cAdd, 0xb335); reg_w(gspca_dev, 0xa0, ptsensor_info->op, 0xb301); value = read_sensor_register(gspca_dev, ptsensor_info->IdAdd); if (value == 0 && ptsensor_info->IdAdd == 0x82) value = read_sensor_register(gspca_dev, 0x83); if (value != 0) { gspca_dbg(gspca_dev, D_PROBE, "Sensor ID %04x (%d)\n", value, i); if (value == ptsensor_info->VpId) return ptsensor_info->sensorId; switch (value) { case 0x3130: return SENSOR_PO3130NC; case 0x7673: return SENSOR_OV7670; case 0x8243: return SENSOR_MI0360; } } ptsensor_info++; } return -1; } static void i2c_write(struct gspca_dev *gspca_dev, u8 reg, const u8 *val, u8 size) /* 1 or 2 */ { int retry; if (gspca_dev->usb_err < 0) return; if (size == 1) gspca_dbg(gspca_dev, D_USBO, "i2c_w %02x %02x\n", reg, *val); else gspca_dbg(gspca_dev, D_USBO, "i2c_w %02x %02x%02x\n", reg, *val, val[1]); reg_r_i(gspca_dev, 0xa1, 0xb33f, 1); /*fixme:should check if (!(gspca_dev->usb_buf[0] & 0x02)) error*/ reg_w_i(gspca_dev, 0xa0, size, 0xb334); reg_w_i(gspca_dev, 0xa0, reg, 0xb33a); reg_w_i(gspca_dev, 0xa0, val[0], 0xb336); if (size > 1) reg_w_i(gspca_dev, 0xa0, val[1], 0xb337); reg_w_i(gspca_dev, 0xa0, 0x01, 0xb339); retry = 4; do { reg_r_i(gspca_dev, 0xa1, 0xb33b, 1); if (gspca_dev->usb_buf[0] == 0) break; msleep(20); } while (--retry > 0); if (retry <= 0) pr_err("i2c_write timeout\n"); } static void put_tab_to_reg(struct gspca_dev *gspca_dev, const u8 *tab, u8 tabsize, u16 addr) { int j; u16 ad = addr; for (j = 0; j < tabsize; j++) reg_w(gspca_dev, 0xa0, tab[j], ad++); } static void usb_exchange(struct gspca_dev *gspca_dev, const u8 data[][4]) { int i = 0; for (;;) { switch (data[i][3]) { default: return; case 0xcc: /* normal write */ reg_w(gspca_dev, 0xa0, data[i][2], (data[i][0]) << 8 | data[i][1]); break; case 0xaa: /* i2c op */ i2c_write(gspca_dev, data[i][1], &data[i][2], 1); break; case 0xbb: /* i2c op */ i2c_write(gspca_dev, data[i][0], &data[i][1], 2); break; case 0xdd: msleep(data[i][1] * 256 + data[i][2] + 10); break; } i++; } /*not reached*/ } /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; sd->bridge = id->driver_info >> 8; sd->flags = id->driver_info & 0xff; if (id->idVendor == 0x046d && (id->idProduct == 0x0892 || id->idProduct == 0x0896)) sd->sensor = SENSOR_POxxxx; /* no probe */ return 0; } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; int sensor; /* number of packets per ISOC message */ static u8 npkt[NSENSORS] = { [SENSOR_HV7131R] = 64, [SENSOR_MI0360] = 32, [SENSOR_MI1310_SOC] = 32, [SENSOR_MI1320] = 64, [SENSOR_MI1320_SOC] = 128, [SENSOR_OV7660] = 32, [SENSOR_OV7670] = 64, [SENSOR_PO1200] = 128, [SENSOR_PO3130NC] = 128, [SENSOR_POxxxx] = 128, }; if (sd->sensor != SENSOR_POxxxx) sensor = vc032x_probe_sensor(gspca_dev); else sensor = sd->sensor; switch (sensor) { case -1: pr_err("Unknown sensor...\n"); return -EINVAL; case SENSOR_HV7131R: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor HV7131R\n"); break; case SENSOR_MI0360: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor MI0360\n"); sd->bridge = BRIDGE_VC0323; break; case SENSOR_MI1310_SOC: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor MI1310_SOC\n"); break; case SENSOR_MI1320: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor MI1320\n"); break; case SENSOR_MI1320_SOC: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor MI1320_SOC\n"); break; case SENSOR_OV7660: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor OV7660\n"); break; case SENSOR_OV7670: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor OV7670\n"); break; case SENSOR_PO1200: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor PO1200\n"); break; case SENSOR_PO3130NC: gspca_dbg(gspca_dev, D_PROBE, "Find Sensor PO3130NC\n"); break; case SENSOR_POxxxx: gspca_dbg(gspca_dev, D_PROBE, "Sensor POxxxx\n"); break; } sd->sensor = sensor; cam = &gspca_dev->cam; if (sd->bridge == BRIDGE_VC0321) { cam->cam_mode = vc0321_mode; cam->nmodes = ARRAY_SIZE(vc0321_mode); } else { switch (sensor) { case SENSOR_PO1200: cam->cam_mode = svga_mode; cam->nmodes = ARRAY_SIZE(svga_mode); break; case SENSOR_MI1310_SOC: cam->cam_mode = vc0323_mode; cam->nmodes = ARRAY_SIZE(vc0323_mode); break; case SENSOR_MI1320_SOC: cam->cam_mode = bi_mode; cam->nmodes = ARRAY_SIZE(bi_mode); break; case SENSOR_OV7670: cam->cam_mode = bi_mode; cam->nmodes = ARRAY_SIZE(bi_mode) - 1; break; default: cam->cam_mode = vc0323_mode; cam->nmodes = ARRAY_SIZE(vc0323_mode) - 1; break; } } cam->npkt = npkt[sd->sensor]; if (sd->sensor == SENSOR_OV7670) sd->flags |= FL_HFLIP | FL_VFLIP; if (sd->bridge == BRIDGE_VC0321) { reg_r(gspca_dev, 0x8a, 0, 3); reg_w(gspca_dev, 0x87, 0x00, 0x0f0f); reg_r(gspca_dev, 0x8b, 0, 3); reg_w(gspca_dev, 0x88, 0x00, 0x0202); if (sd->sensor == SENSOR_POxxxx) { reg_r(gspca_dev, 0xa1, 0xb300, 1); if (gspca_dev->usb_buf[0] != 0) { reg_w(gspca_dev, 0xa0, 0x26, 0xb300); reg_w(gspca_dev, 0xa0, 0x04, 0xb300); } reg_w(gspca_dev, 0xa0, 0x00, 0xb300); } } return gspca_dev->usb_err; } static void setbrightness(struct gspca_dev *gspca_dev, s32 val) { u8 data; data = val; if (data >= 0x80) data &= 0x7f; else data = 0xff ^ data; i2c_write(gspca_dev, 0x98, &data, 1); } static void setcontrast(struct gspca_dev *gspca_dev, u8 val) { i2c_write(gspca_dev, 0x99, &val, 1); } static void setcolors(struct gspca_dev *gspca_dev, u8 val) { u8 data; data = val - (val >> 3) - 1; i2c_write(gspca_dev, 0x94, &data, 1); i2c_write(gspca_dev, 0x95, &val, 1); } static void sethvflip(struct gspca_dev *gspca_dev, bool hflip, bool vflip) { struct sd *sd = (struct sd *) gspca_dev; u8 data[2]; if (sd->flags & FL_HFLIP) hflip = !hflip; if (sd->flags & FL_VFLIP) vflip = !vflip; switch (sd->sensor) { case SENSOR_MI1310_SOC: case SENSOR_MI1320: case SENSOR_MI1320_SOC: data[0] = data[1] = 0; /* select page 0 */ i2c_write(gspca_dev, 0xf0, data, 2); data[0] = sd->sensor == SENSOR_MI1310_SOC ? 0x03 : 0x01; data[1] = 0x02 * hflip | 0x01 * vflip; i2c_write(gspca_dev, 0x20, data, 2); break; case SENSOR_OV7660: case SENSOR_OV7670: data[0] = sd->sensor == SENSOR_OV7660 ? 0x01 : 0x07; data[0] |= OV7660_MVFP_MIRROR * hflip | OV7660_MVFP_VFLIP * vflip; i2c_write(gspca_dev, OV7660_REG_MVFP, data, 1); break; case SENSOR_PO1200: data[0] = 0; i2c_write(gspca_dev, 0x03, data, 1); data[0] = 0x80 * hflip | 0x40 * vflip | 0x06; i2c_write(gspca_dev, 0x1e, data, 1); break; } } static void setlightfreq(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; static const u8 (*ov7660_freq_tb[3])[4] = { ov7660_NoFlicker, ov7660_50HZ, ov7660_60HZ}; if (sd->sensor != SENSOR_OV7660) return; usb_exchange(gspca_dev, ov7660_freq_tb[val]); } static void setsharpness(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; u8 data; switch (sd->sensor) { case SENSOR_PO1200: data = 0; i2c_write(gspca_dev, 0x03, &data, 1); if (val < 0) data = 0x6a; else data = 0xb5 + val * 3; i2c_write(gspca_dev, 0x61, &data, 1); break; case SENSOR_POxxxx: if (val < 0) data = 0x7e; /* def = max */ else data = 0x60 + val * 0x0f; i2c_write(gspca_dev, 0x59, &data, 1); break; } } static void setgain(struct gspca_dev *gspca_dev, u8 val) { i2c_write(gspca_dev, 0x15, &val, 1); } static void setexposure(struct gspca_dev *gspca_dev, s32 val) { u8 data; data = val >> 8; i2c_write(gspca_dev, 0x1a, &data, 1); data = val; i2c_write(gspca_dev, 0x1b, &data, 1); } static void setautogain(struct gspca_dev *gspca_dev, s32 val) { static const u8 data[2] = {0x28, 0x3c}; i2c_write(gspca_dev, 0xd1, &data[val], 1); } static void setgamma(struct gspca_dev *gspca_dev) { /*fixme:to do */ usb_exchange(gspca_dev, poxxxx_gamma); } static void setbacklight(struct gspca_dev *gspca_dev, s32 val) { u16 v; u8 data; data = (val << 4) | 0x0f; i2c_write(gspca_dev, 0xaa, &data, 1); v = 613 + 12 * val; data = v >> 8; i2c_write(gspca_dev, 0xc4, &data, 1); data = v; i2c_write(gspca_dev, 0xc5, &data, 1); v = 1093 - 12 * val; data = v >> 8; i2c_write(gspca_dev, 0xc6, &data, 1); data = v; i2c_write(gspca_dev, 0xc7, &data, 1); v = 342 + 9 * val; data = v >> 8; i2c_write(gspca_dev, 0xc8, &data, 1); data = v; i2c_write(gspca_dev, 0xc9, &data, 1); v = 702 - 9 * val; data = v >> 8; i2c_write(gspca_dev, 0xca, &data, 1); data = v; i2c_write(gspca_dev, 0xcb, &data, 1); } static void setwb(struct gspca_dev *gspca_dev) { /*fixme:to do - valid when reg d1 = 0x1c - (reg16 + reg15 = 0xa3)*/ static const u8 data[2] = {0x00, 0x00}; i2c_write(gspca_dev, 0x16, &data[0], 1); i2c_write(gspca_dev, 0x18, &data[1], 1); } static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; const u8 (*init)[4]; const u8 *GammaT = NULL; const u8 *MatrixT = NULL; int mode; static const u8 (*mi1320_soc_init[])[4] = { mi1320_soc_InitSXGA, mi1320_soc_InitVGA, mi1320_soc_InitQVGA, }; /*fixme: back sensor only*/ if (sd->flags & FL_SAMSUNG) { reg_w(gspca_dev, 0x89, 0xf0ff, 0xffff); reg_w(gspca_dev, 0xa9, 0x8348, 0x000e); reg_w(gspca_dev, 0xa9, 0x0000, 0x001a); } /* Assume start use the good resolution from gspca_dev->mode */ if (sd->bridge == BRIDGE_VC0321) { reg_w(gspca_dev, 0xa0, 0xff, 0xbfec); reg_w(gspca_dev, 0xa0, 0xff, 0xbfed); reg_w(gspca_dev, 0xa0, 0xff, 0xbfee); reg_w(gspca_dev, 0xa0, 0xff, 0xbfef); sd->image_offset = 46; } else { if (gspca_dev->cam.cam_mode[gspca_dev->curr_mode].pixelformat == V4L2_PIX_FMT_JPEG) sd->image_offset = 0; else sd->image_offset = 32; } mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv; switch (sd->sensor) { case SENSOR_HV7131R: GammaT = hv7131r_gamma; MatrixT = hv7131r_matrix; if (mode) init = hv7131r_initQVGA_data; /* 320x240 */ else init = hv7131r_initVGA_data; /* 640x480 */ break; case SENSOR_OV7660: GammaT = ov7660_gamma; MatrixT = ov7660_matrix; if (mode) init = ov7660_initQVGA_data; /* 320x240 */ else init = ov7660_initVGA_data; /* 640x480 */ break; case SENSOR_MI0360: GammaT = mi1320_gamma; MatrixT = mi0360_matrix; if (mode) init = mi0360_initQVGA_JPG; /* 320x240 */ else init = mi0360_initVGA_JPG; /* 640x480 */ break; case SENSOR_MI1310_SOC: GammaT = mi1320_gamma; MatrixT = mi1320_matrix; switch (mode) { case 1: init = mi1310_socinitQVGA_JPG; /* 320x240 */ break; case 0: init = mi1310_socinitVGA_JPG; /* 640x480 */ break; default: init = mi1310_soc_InitSXGA_JPG; /* 1280x1024 */ break; } break; case SENSOR_MI1320: GammaT = mi1320_gamma; MatrixT = mi1320_matrix; if (mode) init = mi1320_initQVGA_data; /* 320x240 */ else init = mi1320_initVGA_data; /* 640x480 */ break; case SENSOR_MI1320_SOC: GammaT = mi1320_gamma; MatrixT = mi1320_matrix; init = mi1320_soc_init[mode]; break; case SENSOR_OV7670: init = mode == 1 ? ov7670_InitVGA : ov7670_InitQVGA; break; case SENSOR_PO3130NC: GammaT = po3130_gamma; MatrixT = po3130_matrix; if (mode) init = po3130_initQVGA_data; /* 320x240 */ else init = po3130_initVGA_data; /* 640x480 */ usb_exchange(gspca_dev, init); init = po3130_rundata; break; case SENSOR_PO1200: GammaT = po1200_gamma; MatrixT = po1200_matrix; init = po1200_initVGA_data; break; default: /* case SENSOR_POxxxx: */ usb_exchange(gspca_dev, poxxxx_init_common); setgamma(gspca_dev); usb_exchange(gspca_dev, poxxxx_init_start_3); if (mode) init = poxxxx_initQVGA; else init = poxxxx_initVGA; usb_exchange(gspca_dev, init); reg_r(gspca_dev, 0x8c, 0x0000, 3); reg_w(gspca_dev, 0xa0, gspca_dev->usb_buf[2] & 1 ? 0 : 1, 0xb35c); msleep(300); /*fixme: i2c read 04 and 05*/ init = poxxxx_init_end_1; break; } usb_exchange(gspca_dev, init); if (GammaT && MatrixT) { put_tab_to_reg(gspca_dev, GammaT, 17, 0xb84a); put_tab_to_reg(gspca_dev, GammaT, 17, 0xb85b); put_tab_to_reg(gspca_dev, GammaT, 17, 0xb86c); put_tab_to_reg(gspca_dev, MatrixT, 9, 0xb82c); switch (sd->sensor) { case SENSOR_PO1200: case SENSOR_HV7131R: reg_w(gspca_dev, 0x89, 0x0400, 0x1415); break; case SENSOR_MI1310_SOC: reg_w(gspca_dev, 0x89, 0x058c, 0x0000); break; } msleep(100); } switch (sd->sensor) { case SENSOR_OV7670: reg_w(gspca_dev, 0x87, 0xffff, 0xffff); reg_w(gspca_dev, 0x88, 0xff00, 0xf0f1); reg_w(gspca_dev, 0xa0, 0x0000, 0xbfff); break; case SENSOR_POxxxx: usb_exchange(gspca_dev, poxxxx_init_end_2); setwb(gspca_dev); msleep(80); /* led on */ reg_w(gspca_dev, 0x89, 0xffff, 0xfdff); break; } return gspca_dev->usb_err; } static void sd_stopN(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; switch (sd->sensor) { case SENSOR_MI1310_SOC: reg_w(gspca_dev, 0x89, 0x058c, 0x00ff); break; case SENSOR_POxxxx: return; default: if (!(sd->flags & FL_SAMSUNG)) reg_w(gspca_dev, 0x89, 0xffff, 0xffff); break; } reg_w(gspca_dev, 0xa0, 0x01, 0xb301); reg_w(gspca_dev, 0xa0, 0x09, 0xb003); } /* called on streamoff with alt 0 and on disconnect */ static void sd_stop0(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (!gspca_dev->present) return; /*fixme: is this useful?*/ if (sd->sensor == SENSOR_MI1310_SOC) reg_w(gspca_dev, 0x89, 0x058c, 0x00ff); else if (!(sd->flags & FL_SAMSUNG)) reg_w(gspca_dev, 0x89, 0xffff, 0xffff); if (sd->sensor == SENSOR_POxxxx) { reg_w(gspca_dev, 0xa0, 0x26, 0xb300); reg_w(gspca_dev, 0xa0, 0x04, 0xb300); reg_w(gspca_dev, 0xa0, 0x00, 0xb300); } } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso pkt length */ { struct sd *sd = (struct sd *) gspca_dev; if (data[0] == 0xff && data[1] == 0xd8) { gspca_dbg(gspca_dev, D_PACK, "vc032x header packet found len %d\n", len); gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); data += sd->image_offset; len -= sd->image_offset; gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); return; } /* The vc0321 sends some additional data after sending the complete * frame, we ignore this. */ if (sd->bridge == BRIDGE_VC0321) { int size, l; l = gspca_dev->image_len; size = gspca_dev->pixfmt.sizeimage; if (len > size - l) len = size - l; } gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } static int sd_s_ctrl(struct v4l2_ctrl *ctrl) { struct gspca_dev *gspca_dev = container_of(ctrl->handler, struct gspca_dev, ctrl_handler); struct sd *sd = (struct sd *)gspca_dev; gspca_dev->usb_err = 0; if (!gspca_dev->streaming && ctrl->id != V4L2_CID_POWER_LINE_FREQUENCY) return 0; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: setbrightness(gspca_dev, ctrl->val); break; case V4L2_CID_CONTRAST: setcontrast(gspca_dev, ctrl->val); break; case V4L2_CID_SATURATION: setcolors(gspca_dev, ctrl->val); break; case V4L2_CID_HFLIP: sethvflip(gspca_dev, sd->hflip->val, sd->vflip->val); break; case V4L2_CID_SHARPNESS: setsharpness(gspca_dev, ctrl->val); break; case V4L2_CID_AUTOGAIN: setautogain(gspca_dev, ctrl->val); break; case V4L2_CID_GAIN: setgain(gspca_dev, ctrl->val); break; case V4L2_CID_EXPOSURE: setexposure(gspca_dev, ctrl->val); break; case V4L2_CID_BACKLIGHT_COMPENSATION: setbacklight(gspca_dev, ctrl->val); break; case V4L2_CID_POWER_LINE_FREQUENCY: setlightfreq(gspca_dev, ctrl->val); break; } return gspca_dev->usb_err; } static const struct v4l2_ctrl_ops sd_ctrl_ops = { .s_ctrl = sd_s_ctrl, }; static int sd_init_controls(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *)gspca_dev; struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; bool has_brightness = false; bool has_contrast = false; bool has_sat = false; bool has_hvflip = false; bool has_freq = false; bool has_backlight = false; bool has_exposure = false; bool has_autogain = false; bool has_gain = false; bool has_sharpness = false; switch (sd->sensor) { case SENSOR_HV7131R: case SENSOR_MI0360: case SENSOR_PO3130NC: break; case SENSOR_MI1310_SOC: case SENSOR_MI1320: case SENSOR_MI1320_SOC: case SENSOR_OV7660: has_hvflip = true; break; case SENSOR_OV7670: has_hvflip = has_freq = true; break; case SENSOR_PO1200: has_hvflip = has_sharpness = true; break; case SENSOR_POxxxx: has_brightness = has_contrast = has_sat = has_backlight = has_exposure = has_autogain = has_gain = has_sharpness = true; break; } gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 8); if (has_brightness) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); if (has_contrast) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_CONTRAST, 0, 255, 1, 127); if (has_sat) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_SATURATION, 1, 127, 1, 63); if (has_hvflip) { sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); } if (has_sharpness) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_SHARPNESS, -1, 2, 1, -1); if (has_freq) v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, V4L2_CID_POWER_LINE_FREQUENCY, V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, V4L2_CID_POWER_LINE_FREQUENCY_50HZ); if (has_autogain) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); if (has_gain) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 78, 1, 0); if (has_exposure) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_EXPOSURE, 0, 4095, 1, 450); if (has_backlight) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BACKLIGHT_COMPENSATION, 0, 15, 1, 15); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } if (sd->hflip) v4l2_ctrl_cluster(2, &sd->hflip); return 0; } /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .init_controls = sd_init_controls, .config = sd_config, .init = sd_init, .start = sd_start, .stopN = sd_stopN, .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, }; /* -- module initialisation -- */ #define BF(bridge, flags) \ .driver_info = (BRIDGE_ ## bridge << 8) \ | (flags) static const struct usb_device_id device_table[] = { {USB_DEVICE(0x041e, 0x405b), BF(VC0323, FL_VFLIP)}, {USB_DEVICE(0x046d, 0x0892), BF(VC0321, 0)}, {USB_DEVICE(0x046d, 0x0896), BF(VC0321, 0)}, {USB_DEVICE(0x046d, 0x0897), BF(VC0321, 0)}, {USB_DEVICE(0x0ac8, 0x0321), BF(VC0321, 0)}, {USB_DEVICE(0x0ac8, 0x0323), BF(VC0323, 0)}, {USB_DEVICE(0x0ac8, 0x0328), BF(VC0321, 0)}, {USB_DEVICE(0x0ac8, 0xc001), BF(VC0321, 0)}, {USB_DEVICE(0x0ac8, 0xc002), BF(VC0321, 0)}, {USB_DEVICE(0x0ac8, 0xc301), BF(VC0323, FL_SAMSUNG)}, {USB_DEVICE(0x15b8, 0x6001), BF(VC0323, 0)}, {USB_DEVICE(0x15b8, 0x6002), BF(VC0323, 0)}, {USB_DEVICE(0x17ef, 0x4802), BF(VC0323, 0)}, {} }; MODULE_DEVICE_TABLE(usb, device_table); /* -- device connect -- */ static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id) { return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), THIS_MODULE); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = device_table, .probe = sd_probe, .disconnect = gspca_disconnect, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, .reset_resume = gspca_resume, #endif }; module_usb_driver(sd_driver); |
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2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 | // SPDX-License-Identifier: GPL-2.0-only /* * V4L2 sub-device * * Copyright (C) 2010 Nokia Corporation * * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com> * Sakari Ailus <sakari.ailus@iki.fi> */ #include <linux/export.h> #include <linux/ioctl.h> #include <linux/leds.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/overflow.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/types.h> #include <linux/version.h> #include <linux/videodev2.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-event.h> #include <media/v4l2-fh.h> #include <media/v4l2-ioctl.h> /** * struct v4l2_subdev_stream_config - Used for storing stream configuration. * * @pad: pad number * @stream: stream number * @enabled: has the stream been enabled with v4l2_subdev_enable_streams() * @fmt: &struct v4l2_mbus_framefmt * @crop: &struct v4l2_rect to be used for crop * @compose: &struct v4l2_rect to be used for compose * @interval: frame interval * * This structure stores configuration for a stream. */ struct v4l2_subdev_stream_config { u32 pad; u32 stream; bool enabled; struct v4l2_mbus_framefmt fmt; struct v4l2_rect crop; struct v4l2_rect compose; struct v4l2_fract interval; }; #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) /* * The Streams API is an experimental feature. To use the Streams API, set * 'v4l2_subdev_enable_streams_api' to 1 below. */ static bool v4l2_subdev_enable_streams_api; #endif /* * Maximum stream ID is 63 for now, as we use u64 bitmask to represent a set * of streams. * * Note that V4L2_FRAME_DESC_ENTRY_MAX is related: V4L2_FRAME_DESC_ENTRY_MAX * restricts the total number of streams in a pad, although the stream ID is * not restricted. */ #define V4L2_SUBDEV_MAX_STREAM_ID 63 #include "v4l2-subdev-priv.h" #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) { struct v4l2_subdev_state *state; static struct lock_class_key key; state = __v4l2_subdev_state_alloc(sd, "fh->state->lock", &key); if (IS_ERR(state)) return PTR_ERR(state); fh->state = state; return 0; } static void subdev_fh_free(struct v4l2_subdev_fh *fh) { __v4l2_subdev_state_free(fh->state); fh->state = NULL; } static int subdev_open(struct file *file) { struct video_device *vdev = video_devdata(file); struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); struct v4l2_subdev_fh *subdev_fh; int ret; subdev_fh = kzalloc(sizeof(*subdev_fh), GFP_KERNEL); if (subdev_fh == NULL) return -ENOMEM; ret = subdev_fh_init(subdev_fh, sd); if (ret) { kfree(subdev_fh); return ret; } v4l2_fh_init(&subdev_fh->vfh, vdev); v4l2_fh_add(&subdev_fh->vfh, file); if (sd->v4l2_dev->mdev && sd->entity.graph_obj.mdev->dev) { struct module *owner; owner = sd->entity.graph_obj.mdev->dev->driver->owner; if (!try_module_get(owner)) { ret = -EBUSY; goto err; } subdev_fh->owner = owner; } if (sd->internal_ops && sd->internal_ops->open) { ret = sd->internal_ops->open(sd, subdev_fh); if (ret < 0) goto err; } return 0; err: module_put(subdev_fh->owner); v4l2_fh_del(&subdev_fh->vfh, file); v4l2_fh_exit(&subdev_fh->vfh); subdev_fh_free(subdev_fh); kfree(subdev_fh); return ret; } static int subdev_close(struct file *file) { struct video_device *vdev = video_devdata(file); struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); struct v4l2_fh *vfh = file_to_v4l2_fh(file); struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); if (sd->internal_ops && sd->internal_ops->close) sd->internal_ops->close(sd, subdev_fh); module_put(subdev_fh->owner); v4l2_fh_del(vfh, file); v4l2_fh_exit(vfh); subdev_fh_free(subdev_fh); kfree(subdev_fh); return 0; } #else /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static int subdev_open(struct file *file) { return -ENODEV; } static int subdev_close(struct file *file) { return -ENODEV; } #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static void v4l2_subdev_enable_privacy_led(struct v4l2_subdev *sd) { #if IS_REACHABLE(CONFIG_LEDS_CLASS) if (!IS_ERR_OR_NULL(sd->privacy_led)) led_set_brightness(sd->privacy_led, sd->privacy_led->max_brightness); #endif } static void v4l2_subdev_disable_privacy_led(struct v4l2_subdev *sd) { #if IS_REACHABLE(CONFIG_LEDS_CLASS) if (!IS_ERR_OR_NULL(sd->privacy_led)) led_set_brightness(sd->privacy_led, 0); #endif } static inline int check_which(u32 which) { if (which != V4L2_SUBDEV_FORMAT_TRY && which != V4L2_SUBDEV_FORMAT_ACTIVE) return -EINVAL; return 0; } static inline int check_pad(struct v4l2_subdev *sd, u32 pad) { #if defined(CONFIG_MEDIA_CONTROLLER) if (sd->entity.num_pads) { if (pad >= sd->entity.num_pads) return -EINVAL; return 0; } #endif /* allow pad 0 on subdevices not registered as media entities */ if (pad > 0) return -EINVAL; return 0; } static int check_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 which, u32 pad, u32 stream) { if (sd->flags & V4L2_SUBDEV_FL_STREAMS) { #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) if (!v4l2_subdev_state_get_format(state, pad, stream)) return -EINVAL; return 0; #else return -EINVAL; #endif } if (stream != 0) return -EINVAL; if (which == V4L2_SUBDEV_FORMAT_TRY && (!state || !state->pads)) return -EINVAL; return 0; } static inline int check_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { if (!format) return -EINVAL; return check_which(format->which) ? : check_pad(sd, format->pad) ? : check_state(sd, state, format->which, format->pad, format->stream); } static int call_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { return check_format(sd, state, format) ? : sd->ops->pad->get_fmt(sd, state, format); } static int call_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { return check_format(sd, state, format) ? : sd->ops->pad->set_fmt(sd, state, format); } static int call_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_mbus_code_enum *code) { if (!code) return -EINVAL; return check_which(code->which) ? : check_pad(sd, code->pad) ? : check_state(sd, state, code->which, code->pad, code->stream) ? : sd->ops->pad->enum_mbus_code(sd, state, code); } static int call_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_size_enum *fse) { if (!fse) return -EINVAL; return check_which(fse->which) ? : check_pad(sd, fse->pad) ? : check_state(sd, state, fse->which, fse->pad, fse->stream) ? : sd->ops->pad->enum_frame_size(sd, state, fse); } static int call_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval_enum *fie) { if (!fie) return -EINVAL; return check_which(fie->which) ? : check_pad(sd, fie->pad) ? : check_state(sd, state, fie->which, fie->pad, fie->stream) ? : sd->ops->pad->enum_frame_interval(sd, state, fie); } static inline int check_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { if (!sel) return -EINVAL; return check_which(sel->which) ? : check_pad(sd, sel->pad) ? : check_state(sd, state, sel->which, sel->pad, sel->stream); } static int call_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { return check_selection(sd, state, sel) ? : sd->ops->pad->get_selection(sd, state, sel); } static int call_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { return check_selection(sd, state, sel) ? : sd->ops->pad->set_selection(sd, state, sel); } static inline int check_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { if (!fi) return -EINVAL; return check_which(fi->which) ? : check_pad(sd, fi->pad) ? : check_state(sd, state, fi->which, fi->pad, fi->stream); } static int call_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { return check_frame_interval(sd, state, fi) ? : sd->ops->pad->get_frame_interval(sd, state, fi); } static int call_set_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { return check_frame_interval(sd, state, fi) ? : sd->ops->pad->set_frame_interval(sd, state, fi); } static int call_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd) { unsigned int i; int ret; #if defined(CONFIG_MEDIA_CONTROLLER) if (!(sd->entity.pads[pad].flags & MEDIA_PAD_FL_SOURCE)) return -EOPNOTSUPP; #endif memset(fd, 0, sizeof(*fd)); ret = sd->ops->pad->get_frame_desc(sd, pad, fd); if (ret) return ret; dev_dbg(sd->dev, "Frame descriptor on pad %u, type %s\n", pad, fd->type == V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL ? "parallel" : fd->type == V4L2_MBUS_FRAME_DESC_TYPE_CSI2 ? "CSI-2" : "unknown"); for (i = 0; i < fd->num_entries; i++) { struct v4l2_mbus_frame_desc_entry *entry = &fd->entry[i]; char buf[20] = ""; if (fd->type == V4L2_MBUS_FRAME_DESC_TYPE_CSI2) WARN_ON(snprintf(buf, sizeof(buf), ", vc %u, dt 0x%02x", entry->bus.csi2.vc, entry->bus.csi2.dt) >= sizeof(buf)); dev_dbg(sd->dev, "\tstream %u, code 0x%04x, length %u, flags 0x%04x%s\n", entry->stream, entry->pixelcode, entry->length, entry->flags, buf); } return 0; } static inline int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { if (!edid) return -EINVAL; if (edid->blocks && edid->edid == NULL) return -EINVAL; return check_pad(sd, edid->pad); } static int call_get_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { return check_edid(sd, edid) ? : sd->ops->pad->get_edid(sd, edid); } static int call_set_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { return check_edid(sd, edid) ? : sd->ops->pad->set_edid(sd, edid); } static int call_s_dv_timings(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_dv_timings *timings) { if (!timings) return -EINVAL; return check_pad(sd, pad) ? : sd->ops->pad->s_dv_timings(sd, pad, timings); } static int call_g_dv_timings(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_dv_timings *timings) { if (!timings) return -EINVAL; return check_pad(sd, pad) ? : sd->ops->pad->g_dv_timings(sd, pad, timings); } static int call_query_dv_timings(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_dv_timings *timings) { if (!timings) return -EINVAL; return check_pad(sd, pad) ? : sd->ops->pad->query_dv_timings(sd, pad, timings); } static int call_dv_timings_cap(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap) { if (!cap) return -EINVAL; return check_pad(sd, cap->pad) ? : sd->ops->pad->dv_timings_cap(sd, cap); } static int call_enum_dv_timings(struct v4l2_subdev *sd, struct v4l2_enum_dv_timings *dvt) { if (!dvt) return -EINVAL; return check_pad(sd, dvt->pad) ? : sd->ops->pad->enum_dv_timings(sd, dvt); } static int call_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *config) { memset(config, 0, sizeof(*config)); return check_pad(sd, pad) ? : sd->ops->pad->get_mbus_config(sd, pad, config); } static int call_s_stream(struct v4l2_subdev *sd, int enable) { int ret; /* * The .s_stream() operation must never be called to start or stop an * already started or stopped subdev. Catch offenders but don't return * an error yet to avoid regressions. */ if (WARN_ON(sd->s_stream_enabled == !!enable)) return 0; ret = sd->ops->video->s_stream(sd, enable); if (!enable && ret < 0) { dev_warn(sd->dev, "disabling streaming failed (%d)\n", ret); ret = 0; } if (!ret) { sd->s_stream_enabled = enable; if (enable) v4l2_subdev_enable_privacy_led(sd); else v4l2_subdev_disable_privacy_led(sd); } return ret; } #ifdef CONFIG_MEDIA_CONTROLLER /* * Create state-management wrapper for pad ops dealing with subdev state. The * wrapper handles the case where the caller does not provide the called * subdev's state. This should be removed when all the callers are fixed. */ #define DEFINE_STATE_WRAPPER(f, arg_type) \ static int call_##f##_state(struct v4l2_subdev *sd, \ struct v4l2_subdev_state *_state, \ arg_type *arg) \ { \ struct v4l2_subdev_state *state = _state; \ int ret; \ if (!_state) \ state = v4l2_subdev_lock_and_get_active_state(sd); \ ret = call_##f(sd, state, arg); \ if (!_state && state) \ v4l2_subdev_unlock_state(state); \ return ret; \ } #else /* CONFIG_MEDIA_CONTROLLER */ #define DEFINE_STATE_WRAPPER(f, arg_type) \ static int call_##f##_state(struct v4l2_subdev *sd, \ struct v4l2_subdev_state *state, \ arg_type *arg) \ { \ return call_##f(sd, state, arg); \ } #endif /* CONFIG_MEDIA_CONTROLLER */ DEFINE_STATE_WRAPPER(get_fmt, struct v4l2_subdev_format); DEFINE_STATE_WRAPPER(set_fmt, struct v4l2_subdev_format); DEFINE_STATE_WRAPPER(enum_mbus_code, struct v4l2_subdev_mbus_code_enum); DEFINE_STATE_WRAPPER(enum_frame_size, struct v4l2_subdev_frame_size_enum); DEFINE_STATE_WRAPPER(enum_frame_interval, struct v4l2_subdev_frame_interval_enum); DEFINE_STATE_WRAPPER(get_selection, struct v4l2_subdev_selection); DEFINE_STATE_WRAPPER(set_selection, struct v4l2_subdev_selection); static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = { .get_fmt = call_get_fmt_state, .set_fmt = call_set_fmt_state, .enum_mbus_code = call_enum_mbus_code_state, .enum_frame_size = call_enum_frame_size_state, .enum_frame_interval = call_enum_frame_interval_state, .get_selection = call_get_selection_state, .set_selection = call_set_selection_state, .get_frame_interval = call_get_frame_interval, .set_frame_interval = call_set_frame_interval, .get_edid = call_get_edid, .set_edid = call_set_edid, .s_dv_timings = call_s_dv_timings, .g_dv_timings = call_g_dv_timings, .query_dv_timings = call_query_dv_timings, .dv_timings_cap = call_dv_timings_cap, .enum_dv_timings = call_enum_dv_timings, .get_frame_desc = call_get_frame_desc, .get_mbus_config = call_get_mbus_config, }; static const struct v4l2_subdev_video_ops v4l2_subdev_call_video_wrappers = { .s_stream = call_s_stream, }; const struct v4l2_subdev_ops v4l2_subdev_call_wrappers = { .pad = &v4l2_subdev_call_pad_wrappers, .video = &v4l2_subdev_call_video_wrappers, }; EXPORT_SYMBOL(v4l2_subdev_call_wrappers); #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static struct v4l2_subdev_state * subdev_ioctl_get_state(struct v4l2_subdev *sd, struct v4l2_subdev_fh *subdev_fh, unsigned int cmd, void *arg) { u32 which; switch (cmd) { default: return NULL; case VIDIOC_SUBDEV_G_FMT: case VIDIOC_SUBDEV_S_FMT: which = ((struct v4l2_subdev_format *)arg)->which; break; case VIDIOC_SUBDEV_G_CROP: case VIDIOC_SUBDEV_S_CROP: which = ((struct v4l2_subdev_crop *)arg)->which; break; case VIDIOC_SUBDEV_ENUM_MBUS_CODE: which = ((struct v4l2_subdev_mbus_code_enum *)arg)->which; break; case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: which = ((struct v4l2_subdev_frame_size_enum *)arg)->which; break; case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: which = ((struct v4l2_subdev_frame_interval_enum *)arg)->which; break; case VIDIOC_SUBDEV_G_SELECTION: case VIDIOC_SUBDEV_S_SELECTION: which = ((struct v4l2_subdev_selection *)arg)->which; break; case VIDIOC_SUBDEV_G_FRAME_INTERVAL: case VIDIOC_SUBDEV_S_FRAME_INTERVAL: { struct v4l2_subdev_frame_interval *fi = arg; if (!(subdev_fh->client_caps & V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH)) fi->which = V4L2_SUBDEV_FORMAT_ACTIVE; which = fi->which; break; } case VIDIOC_SUBDEV_G_ROUTING: case VIDIOC_SUBDEV_S_ROUTING: which = ((struct v4l2_subdev_routing *)arg)->which; break; } return which == V4L2_SUBDEV_FORMAT_TRY ? subdev_fh->state : v4l2_subdev_get_unlocked_active_state(sd); } static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg, struct v4l2_subdev_state *state) { struct video_device *vdev = video_devdata(file); struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); struct v4l2_fh *vfh = file_to_v4l2_fh(file); struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); bool ro_subdev = test_bit(V4L2_FL_SUBDEV_RO_DEVNODE, &vdev->flags); bool streams_subdev = sd->flags & V4L2_SUBDEV_FL_STREAMS; bool client_supports_streams = subdev_fh->client_caps & V4L2_SUBDEV_CLIENT_CAP_STREAMS; int rval; /* * If the streams API is not enabled, remove V4L2_SUBDEV_CAP_STREAMS. * Remove this when the API is no longer experimental. */ if (!v4l2_subdev_enable_streams_api) streams_subdev = false; switch (cmd) { case VIDIOC_SUBDEV_QUERYCAP: { struct v4l2_subdev_capability *cap = arg; memset(cap->reserved, 0, sizeof(cap->reserved)); cap->version = LINUX_VERSION_CODE; cap->capabilities = (ro_subdev ? V4L2_SUBDEV_CAP_RO_SUBDEV : 0) | (streams_subdev ? V4L2_SUBDEV_CAP_STREAMS : 0); return 0; } case VIDIOC_QUERYCTRL: /* * TODO: this really should be folded into v4l2_queryctrl (this * currently returns -EINVAL for NULL control handlers). * However, v4l2_queryctrl() is still called directly by * drivers as well and until that has been addressed I believe * it is safer to do the check here. The same is true for the * other control ioctls below. */ if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_queryctrl(vfh->ctrl_handler, arg); case VIDIOC_QUERY_EXT_CTRL: if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_query_ext_ctrl(vfh->ctrl_handler, arg); case VIDIOC_QUERYMENU: if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_querymenu(vfh->ctrl_handler, arg); case VIDIOC_G_CTRL: if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_g_ctrl(vfh->ctrl_handler, arg); case VIDIOC_S_CTRL: if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_s_ctrl(vfh, vfh->ctrl_handler, arg); case VIDIOC_G_EXT_CTRLS: if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_g_ext_ctrls(vfh->ctrl_handler, vdev, sd->v4l2_dev->mdev, arg); case VIDIOC_S_EXT_CTRLS: if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, vdev, sd->v4l2_dev->mdev, arg); case VIDIOC_TRY_EXT_CTRLS: if (!vfh->ctrl_handler) return -ENOTTY; return v4l2_try_ext_ctrls(vfh->ctrl_handler, vdev, sd->v4l2_dev->mdev, arg); case VIDIOC_DQEVENT: if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS)) return -ENOIOCTLCMD; return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK); case VIDIOC_SUBSCRIBE_EVENT: if (v4l2_subdev_has_op(sd, core, subscribe_event)) return v4l2_subdev_call(sd, core, subscribe_event, vfh, arg); if ((sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS) && vfh->ctrl_handler) return v4l2_ctrl_subdev_subscribe_event(sd, vfh, arg); return -ENOIOCTLCMD; case VIDIOC_UNSUBSCRIBE_EVENT: if (v4l2_subdev_has_op(sd, core, unsubscribe_event)) return v4l2_subdev_call(sd, core, unsubscribe_event, vfh, arg); if (sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS) return v4l2_event_subdev_unsubscribe(sd, vfh, arg); return -ENOIOCTLCMD; #ifdef CONFIG_VIDEO_ADV_DEBUG case VIDIOC_DBG_G_REGISTER: { struct v4l2_dbg_register *p = arg; if (!capable(CAP_SYS_ADMIN)) return -EPERM; return v4l2_subdev_call(sd, core, g_register, p); } case VIDIOC_DBG_S_REGISTER: { struct v4l2_dbg_register *p = arg; if (!capable(CAP_SYS_ADMIN)) return -EPERM; return v4l2_subdev_call(sd, core, s_register, p); } case VIDIOC_DBG_G_CHIP_INFO: { struct v4l2_dbg_chip_info *p = arg; if (p->match.type != V4L2_CHIP_MATCH_SUBDEV || p->match.addr) return -EINVAL; if (sd->ops->core && sd->ops->core->s_register) p->flags |= V4L2_CHIP_FL_WRITABLE; if (sd->ops->core && sd->ops->core->g_register) p->flags |= V4L2_CHIP_FL_READABLE; strscpy(p->name, sd->name, sizeof(p->name)); return 0; } #endif case VIDIOC_LOG_STATUS: { int ret; pr_info("%s: ================= START STATUS =================\n", sd->name); ret = v4l2_subdev_call(sd, core, log_status); pr_info("%s: ================== END STATUS ==================\n", sd->name); return ret; } case VIDIOC_SUBDEV_G_FMT: { struct v4l2_subdev_format *format = arg; if (!client_supports_streams) format->stream = 0; memset(format->reserved, 0, sizeof(format->reserved)); memset(format->format.reserved, 0, sizeof(format->format.reserved)); return v4l2_subdev_call(sd, pad, get_fmt, state, format); } case VIDIOC_SUBDEV_S_FMT: { struct v4l2_subdev_format *format = arg; if (format->which != V4L2_SUBDEV_FORMAT_TRY && ro_subdev) return -EPERM; if (!client_supports_streams) format->stream = 0; memset(format->reserved, 0, sizeof(format->reserved)); memset(format->format.reserved, 0, sizeof(format->format.reserved)); return v4l2_subdev_call(sd, pad, set_fmt, state, format); } case VIDIOC_SUBDEV_G_CROP: { struct v4l2_subdev_crop *crop = arg; struct v4l2_subdev_selection sel; if (!client_supports_streams) crop->stream = 0; memset(crop->reserved, 0, sizeof(crop->reserved)); memset(&sel, 0, sizeof(sel)); sel.which = crop->which; sel.pad = crop->pad; sel.stream = crop->stream; sel.target = V4L2_SEL_TGT_CROP; rval = v4l2_subdev_call( sd, pad, get_selection, state, &sel); crop->rect = sel.r; return rval; } case VIDIOC_SUBDEV_S_CROP: { struct v4l2_subdev_crop *crop = arg; struct v4l2_subdev_selection sel; if (crop->which != V4L2_SUBDEV_FORMAT_TRY && ro_subdev) return -EPERM; if (!client_supports_streams) crop->stream = 0; memset(crop->reserved, 0, sizeof(crop->reserved)); memset(&sel, 0, sizeof(sel)); sel.which = crop->which; sel.pad = crop->pad; sel.stream = crop->stream; sel.target = V4L2_SEL_TGT_CROP; sel.r = crop->rect; rval = v4l2_subdev_call( sd, pad, set_selection, state, &sel); crop->rect = sel.r; return rval; } case VIDIOC_SUBDEV_ENUM_MBUS_CODE: { struct v4l2_subdev_mbus_code_enum *code = arg; if (!client_supports_streams) code->stream = 0; memset(code->reserved, 0, sizeof(code->reserved)); return v4l2_subdev_call(sd, pad, enum_mbus_code, state, code); } case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: { struct v4l2_subdev_frame_size_enum *fse = arg; if (!client_supports_streams) fse->stream = 0; memset(fse->reserved, 0, sizeof(fse->reserved)); return v4l2_subdev_call(sd, pad, enum_frame_size, state, fse); } case VIDIOC_SUBDEV_G_FRAME_INTERVAL: { struct v4l2_subdev_frame_interval *fi = arg; if (!client_supports_streams) fi->stream = 0; memset(fi->reserved, 0, sizeof(fi->reserved)); return v4l2_subdev_call(sd, pad, get_frame_interval, state, fi); } case VIDIOC_SUBDEV_S_FRAME_INTERVAL: { struct v4l2_subdev_frame_interval *fi = arg; if (!client_supports_streams) fi->stream = 0; if (fi->which != V4L2_SUBDEV_FORMAT_TRY && ro_subdev) return -EPERM; memset(fi->reserved, 0, sizeof(fi->reserved)); return v4l2_subdev_call(sd, pad, set_frame_interval, state, fi); } case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: { struct v4l2_subdev_frame_interval_enum *fie = arg; if (!client_supports_streams) fie->stream = 0; memset(fie->reserved, 0, sizeof(fie->reserved)); return v4l2_subdev_call(sd, pad, enum_frame_interval, state, fie); } case VIDIOC_SUBDEV_G_SELECTION: { struct v4l2_subdev_selection *sel = arg; if (!client_supports_streams) sel->stream = 0; memset(sel->reserved, 0, sizeof(sel->reserved)); return v4l2_subdev_call( sd, pad, get_selection, state, sel); } case VIDIOC_SUBDEV_S_SELECTION: { struct v4l2_subdev_selection *sel = arg; if (sel->which != V4L2_SUBDEV_FORMAT_TRY && ro_subdev) return -EPERM; if (!client_supports_streams) sel->stream = 0; memset(sel->reserved, 0, sizeof(sel->reserved)); return v4l2_subdev_call( sd, pad, set_selection, state, sel); } case VIDIOC_G_EDID: { struct v4l2_subdev_edid *edid = arg; return v4l2_subdev_call(sd, pad, get_edid, edid); } case VIDIOC_S_EDID: { struct v4l2_subdev_edid *edid = arg; return v4l2_subdev_call(sd, pad, set_edid, edid); } case VIDIOC_SUBDEV_DV_TIMINGS_CAP: { struct v4l2_dv_timings_cap *cap = arg; return v4l2_subdev_call(sd, pad, dv_timings_cap, cap); } case VIDIOC_SUBDEV_ENUM_DV_TIMINGS: { struct v4l2_enum_dv_timings *dvt = arg; return v4l2_subdev_call(sd, pad, enum_dv_timings, dvt); } case VIDIOC_SUBDEV_QUERY_DV_TIMINGS: return v4l2_subdev_call(sd, pad, query_dv_timings, 0, arg); case VIDIOC_SUBDEV_G_DV_TIMINGS: return v4l2_subdev_call(sd, pad, g_dv_timings, 0, arg); case VIDIOC_SUBDEV_S_DV_TIMINGS: if (ro_subdev) return -EPERM; return v4l2_subdev_call(sd, pad, s_dv_timings, 0, arg); case VIDIOC_SUBDEV_G_STD: return v4l2_subdev_call(sd, video, g_std, arg); case VIDIOC_SUBDEV_S_STD: { v4l2_std_id *std = arg; if (ro_subdev) return -EPERM; return v4l2_subdev_call(sd, video, s_std, *std); } case VIDIOC_SUBDEV_ENUMSTD: { struct v4l2_standard *p = arg; v4l2_std_id id; if (v4l2_subdev_call(sd, video, g_tvnorms, &id)) return -EINVAL; return v4l_video_std_enumstd(p, id); } case VIDIOC_SUBDEV_QUERYSTD: return v4l2_subdev_call(sd, video, querystd, arg); case VIDIOC_SUBDEV_G_ROUTING: { struct v4l2_subdev_routing *routing = arg; struct v4l2_subdev_krouting *krouting; if (!v4l2_subdev_enable_streams_api) return -ENOIOCTLCMD; if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) return -ENOIOCTLCMD; memset(routing->reserved, 0, sizeof(routing->reserved)); krouting = &state->routing; memcpy((struct v4l2_subdev_route *)(uintptr_t)routing->routes, krouting->routes, min(krouting->num_routes, routing->len_routes) * sizeof(*krouting->routes)); routing->num_routes = krouting->num_routes; return 0; } case VIDIOC_SUBDEV_S_ROUTING: { struct v4l2_subdev_routing *routing = arg; struct v4l2_subdev_route *routes = (struct v4l2_subdev_route *)(uintptr_t)routing->routes; struct v4l2_subdev_krouting krouting = {}; unsigned int num_active_routes = 0; unsigned int i; if (!v4l2_subdev_enable_streams_api) return -ENOIOCTLCMD; if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) return -ENOIOCTLCMD; if (routing->which != V4L2_SUBDEV_FORMAT_TRY && ro_subdev) return -EPERM; if (routing->num_routes > routing->len_routes) return -EINVAL; memset(routing->reserved, 0, sizeof(routing->reserved)); for (i = 0; i < routing->num_routes; ++i) { const struct v4l2_subdev_route *route = &routes[i]; const struct media_pad *pads = sd->entity.pads; if (route->sink_stream > V4L2_SUBDEV_MAX_STREAM_ID || route->source_stream > V4L2_SUBDEV_MAX_STREAM_ID) return -EINVAL; if (route->sink_pad >= sd->entity.num_pads) return -EINVAL; if (!(pads[route->sink_pad].flags & MEDIA_PAD_FL_SINK)) return -EINVAL; if (route->source_pad >= sd->entity.num_pads) return -EINVAL; if (!(pads[route->source_pad].flags & MEDIA_PAD_FL_SOURCE)) return -EINVAL; if (route->flags & V4L2_SUBDEV_ROUTE_FL_ACTIVE) num_active_routes++; } /* * Drivers that implement routing need to report a frame * descriptor accordingly, with up to one entry per route. Until * the frame descriptors entries get allocated dynamically, * limit the number of active routes to * V4L2_FRAME_DESC_ENTRY_MAX. */ if (num_active_routes > V4L2_FRAME_DESC_ENTRY_MAX) return -E2BIG; /* * If the driver doesn't support setting routing, just return * the routing table. */ if (!v4l2_subdev_has_op(sd, pad, set_routing)) { memcpy((struct v4l2_subdev_route *)(uintptr_t)routing->routes, state->routing.routes, min(state->routing.num_routes, routing->len_routes) * sizeof(*state->routing.routes)); routing->num_routes = state->routing.num_routes; return 0; } krouting.num_routes = routing->num_routes; krouting.len_routes = routing->len_routes; krouting.routes = routes; rval = v4l2_subdev_call(sd, pad, set_routing, state, routing->which, &krouting); if (rval < 0) return rval; memcpy((struct v4l2_subdev_route *)(uintptr_t)routing->routes, state->routing.routes, min(state->routing.num_routes, routing->len_routes) * sizeof(*state->routing.routes)); routing->num_routes = state->routing.num_routes; return 0; } case VIDIOC_SUBDEV_G_CLIENT_CAP: { struct v4l2_subdev_client_capability *client_cap = arg; client_cap->capabilities = subdev_fh->client_caps; return 0; } case VIDIOC_SUBDEV_S_CLIENT_CAP: { struct v4l2_subdev_client_capability *client_cap = arg; /* * Clear V4L2_SUBDEV_CLIENT_CAP_STREAMS if streams API is not * enabled. Remove this when streams API is no longer * experimental. */ if (!v4l2_subdev_enable_streams_api) client_cap->capabilities &= ~V4L2_SUBDEV_CLIENT_CAP_STREAMS; /* Filter out unsupported capabilities */ client_cap->capabilities &= (V4L2_SUBDEV_CLIENT_CAP_STREAMS | V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH); subdev_fh->client_caps = client_cap->capabilities; return 0; } default: return v4l2_subdev_call(sd, core, ioctl, cmd, arg); } return 0; } static long subdev_do_ioctl_lock(struct file *file, unsigned int cmd, void *arg) { struct video_device *vdev = video_devdata(file); struct mutex *lock = vdev->lock; long ret = -ENODEV; if (lock && mutex_lock_interruptible(lock)) return -ERESTARTSYS; if (video_is_registered(vdev)) { struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); struct v4l2_fh *vfh = file_to_v4l2_fh(file); struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); struct v4l2_subdev_state *state; state = subdev_ioctl_get_state(sd, subdev_fh, cmd, arg); if (state) v4l2_subdev_lock_state(state); ret = subdev_do_ioctl(file, cmd, arg, state); if (state) v4l2_subdev_unlock_state(state); } if (lock) mutex_unlock(lock); return ret; } static long subdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { return video_usercopy(file, cmd, arg, subdev_do_ioctl_lock); } #ifdef CONFIG_COMPAT static long subdev_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg) { struct video_device *vdev = video_devdata(file); struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); return v4l2_subdev_call(sd, core, compat_ioctl32, cmd, arg); } #endif #else /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static long subdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { return -ENODEV; } #ifdef CONFIG_COMPAT static long subdev_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg) { return -ENODEV; } #endif #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static __poll_t subdev_poll(struct file *file, poll_table *wait) { struct video_device *vdev = video_devdata(file); struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); struct v4l2_fh *fh = file_to_v4l2_fh(file); if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS)) return EPOLLERR; poll_wait(file, &fh->wait, wait); if (v4l2_event_pending(fh)) return EPOLLPRI; return 0; } const struct v4l2_file_operations v4l2_subdev_fops = { .owner = THIS_MODULE, .open = subdev_open, .unlocked_ioctl = subdev_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = subdev_compat_ioctl32, #endif .release = subdev_close, .poll = subdev_poll, }; #ifdef CONFIG_MEDIA_CONTROLLER int v4l2_subdev_get_fwnode_pad_1_to_1(struct media_entity *entity, struct fwnode_endpoint *endpoint) { struct fwnode_handle *fwnode; struct v4l2_subdev *sd; if (!is_media_entity_v4l2_subdev(entity)) return -EINVAL; sd = media_entity_to_v4l2_subdev(entity); fwnode = fwnode_graph_get_port_parent(endpoint->local_fwnode); fwnode_handle_put(fwnode); if (device_match_fwnode(sd->dev, fwnode)) return endpoint->port; return -ENXIO; } EXPORT_SYMBOL_GPL(v4l2_subdev_get_fwnode_pad_1_to_1); int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, struct media_link *link, struct v4l2_subdev_format *source_fmt, struct v4l2_subdev_format *sink_fmt) { bool pass = true; /* The width, height and code must match. */ if (source_fmt->format.width != sink_fmt->format.width) { dev_dbg(sd->entity.graph_obj.mdev->dev, "%s: width does not match (source %u, sink %u)\n", __func__, source_fmt->format.width, sink_fmt->format.width); pass = false; } if (source_fmt->format.height != sink_fmt->format.height) { dev_dbg(sd->entity.graph_obj.mdev->dev, "%s: height does not match (source %u, sink %u)\n", __func__, source_fmt->format.height, sink_fmt->format.height); pass = false; } if (source_fmt->format.code != sink_fmt->format.code) { dev_dbg(sd->entity.graph_obj.mdev->dev, "%s: media bus code does not match (source 0x%8.8x, sink 0x%8.8x)\n", __func__, source_fmt->format.code, sink_fmt->format.code); pass = false; } /* The field order must match, or the sink field order must be NONE * to support interlaced hardware connected to bridges that support * progressive formats only. */ if (source_fmt->format.field != sink_fmt->format.field && sink_fmt->format.field != V4L2_FIELD_NONE) { dev_dbg(sd->entity.graph_obj.mdev->dev, "%s: field does not match (source %u, sink %u)\n", __func__, source_fmt->format.field, sink_fmt->format.field); pass = false; } if (pass) return 0; dev_dbg(sd->entity.graph_obj.mdev->dev, "%s: link was \"%s\":%u -> \"%s\":%u\n", __func__, link->source->entity->name, link->source->index, link->sink->entity->name, link->sink->index); return -EPIPE; } EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate_default); static int v4l2_subdev_link_validate_get_format(struct media_pad *pad, u32 stream, struct v4l2_subdev_format *fmt, bool states_locked) { struct v4l2_subdev_state *state; struct v4l2_subdev *sd; int ret; sd = media_entity_to_v4l2_subdev(pad->entity); fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE; fmt->pad = pad->index; fmt->stream = stream; if (states_locked) state = v4l2_subdev_get_locked_active_state(sd); else state = v4l2_subdev_lock_and_get_active_state(sd); ret = v4l2_subdev_call(sd, pad, get_fmt, state, fmt); if (!states_locked && state) v4l2_subdev_unlock_state(state); return ret; } #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static void __v4l2_link_validate_get_streams(struct media_pad *pad, u64 *streams_mask, bool states_locked) { struct v4l2_subdev_route *route; struct v4l2_subdev_state *state; struct v4l2_subdev *subdev; subdev = media_entity_to_v4l2_subdev(pad->entity); *streams_mask = 0; if (states_locked) state = v4l2_subdev_get_locked_active_state(subdev); else state = v4l2_subdev_lock_and_get_active_state(subdev); if (WARN_ON(!state)) return; for_each_active_route(&state->routing, route) { u32 route_pad; u32 route_stream; if (pad->flags & MEDIA_PAD_FL_SOURCE) { route_pad = route->source_pad; route_stream = route->source_stream; } else { route_pad = route->sink_pad; route_stream = route->sink_stream; } if (route_pad != pad->index) continue; *streams_mask |= BIT_ULL(route_stream); } if (!states_locked) v4l2_subdev_unlock_state(state); } #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static void v4l2_link_validate_get_streams(struct media_pad *pad, u64 *streams_mask, bool states_locked) { struct v4l2_subdev *subdev = media_entity_to_v4l2_subdev(pad->entity); if (!(subdev->flags & V4L2_SUBDEV_FL_STREAMS)) { /* Non-streams subdevs have an implicit stream 0 */ *streams_mask = BIT_ULL(0); return; } #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) __v4l2_link_validate_get_streams(pad, streams_mask, states_locked); #else /* This shouldn't happen */ *streams_mask = 0; #endif } static int v4l2_subdev_link_validate_locked(struct media_link *link, bool states_locked) { struct v4l2_subdev *sink_subdev = media_entity_to_v4l2_subdev(link->sink->entity); struct device *dev = sink_subdev->entity.graph_obj.mdev->dev; u64 source_streams_mask; u64 sink_streams_mask; u64 dangling_sink_streams; u32 stream; int ret; dev_dbg(dev, "validating link \"%s\":%u -> \"%s\":%u\n", link->source->entity->name, link->source->index, link->sink->entity->name, link->sink->index); v4l2_link_validate_get_streams(link->source, &source_streams_mask, states_locked); v4l2_link_validate_get_streams(link->sink, &sink_streams_mask, states_locked); /* * It is ok to have more source streams than sink streams as extra * source streams can just be ignored by the receiver, but having extra * sink streams is an error as streams must have a source. */ dangling_sink_streams = (source_streams_mask ^ sink_streams_mask) & sink_streams_mask; if (dangling_sink_streams) { dev_err(dev, "Dangling sink streams: mask %#llx\n", dangling_sink_streams); return -EINVAL; } /* Validate source and sink stream formats */ for (stream = 0; stream < sizeof(sink_streams_mask) * 8; ++stream) { struct v4l2_subdev_format sink_fmt, source_fmt; if (!(sink_streams_mask & BIT_ULL(stream))) continue; dev_dbg(dev, "validating stream \"%s\":%u:%u -> \"%s\":%u:%u\n", link->source->entity->name, link->source->index, stream, link->sink->entity->name, link->sink->index, stream); ret = v4l2_subdev_link_validate_get_format(link->source, stream, &source_fmt, states_locked); if (ret < 0) { dev_dbg(dev, "Failed to get format for \"%s\":%u:%u (but that's ok)\n", link->source->entity->name, link->source->index, stream); continue; } ret = v4l2_subdev_link_validate_get_format(link->sink, stream, &sink_fmt, states_locked); if (ret < 0) { dev_dbg(dev, "Failed to get format for \"%s\":%u:%u (but that's ok)\n", link->sink->entity->name, link->sink->index, stream); continue; } /* TODO: add stream number to link_validate() */ ret = v4l2_subdev_call(sink_subdev, pad, link_validate, link, &source_fmt, &sink_fmt); if (!ret) continue; if (ret != -ENOIOCTLCMD) return ret; ret = v4l2_subdev_link_validate_default(sink_subdev, link, &source_fmt, &sink_fmt); if (ret) return ret; } return 0; } int v4l2_subdev_link_validate(struct media_link *link) { struct v4l2_subdev *source_sd, *sink_sd; struct v4l2_subdev_state *source_state, *sink_state; bool states_locked; int ret; /* * Links are validated in the context of the sink entity. Usage of this * helper on a sink that is not a subdev is a clear driver bug. */ if (WARN_ON_ONCE(!is_media_entity_v4l2_subdev(link->sink->entity))) return -EINVAL; /* * If the source is a video device, delegate link validation to it. This * allows usage of this helper for subdev connected to a video output * device, provided that the driver implement the video output device's * .link_validate() operation. */ if (is_media_entity_v4l2_video_device(link->source->entity)) { struct media_entity *source = link->source->entity; if (!source->ops || !source->ops->link_validate) { /* * Many existing drivers do not implement the required * .link_validate() operation for their video devices. * Print a warning to get the drivers fixed, and return * 0 to avoid breaking userspace. This should * eventually be turned into a WARN_ON() when all * drivers will have been fixed. */ pr_warn_once("video device '%s' does not implement .link_validate(), driver bug!\n", source->name); return 0; } /* * Avoid infinite loops in case a video device incorrectly uses * this helper function as its .link_validate() handler. */ if (WARN_ON(source->ops->link_validate == v4l2_subdev_link_validate)) return -EINVAL; return source->ops->link_validate(link); } /* * If the source is still not a subdev, usage of this helper is a clear * driver bug. */ if (WARN_ON(!is_media_entity_v4l2_subdev(link->source->entity))) return -EINVAL; sink_sd = media_entity_to_v4l2_subdev(link->sink->entity); source_sd = media_entity_to_v4l2_subdev(link->source->entity); sink_state = v4l2_subdev_get_unlocked_active_state(sink_sd); source_state = v4l2_subdev_get_unlocked_active_state(source_sd); states_locked = sink_state && source_state; if (states_locked) v4l2_subdev_lock_states(sink_state, source_state); ret = v4l2_subdev_link_validate_locked(link, states_locked); if (states_locked) v4l2_subdev_unlock_states(sink_state, source_state); return ret; } EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate); bool v4l2_subdev_has_pad_interdep(struct media_entity *entity, unsigned int pad0, unsigned int pad1) { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct v4l2_subdev_krouting *routing; struct v4l2_subdev_state *state; unsigned int i; state = v4l2_subdev_lock_and_get_active_state(sd); routing = &state->routing; for (i = 0; i < routing->num_routes; ++i) { struct v4l2_subdev_route *route = &routing->routes[i]; if (!(route->flags & V4L2_SUBDEV_ROUTE_FL_ACTIVE)) continue; if ((route->sink_pad == pad0 && route->source_pad == pad1) || (route->source_pad == pad0 && route->sink_pad == pad1)) { v4l2_subdev_unlock_state(state); return true; } } v4l2_subdev_unlock_state(state); return false; } EXPORT_SYMBOL_GPL(v4l2_subdev_has_pad_interdep); struct v4l2_subdev_state * __v4l2_subdev_state_alloc(struct v4l2_subdev *sd, const char *lock_name, struct lock_class_key *lock_key) { struct v4l2_subdev_state *state; int ret; state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) return ERR_PTR(-ENOMEM); __mutex_init(&state->_lock, lock_name, lock_key); if (sd->state_lock) state->lock = sd->state_lock; else state->lock = &state->_lock; state->sd = sd; /* Drivers that support streams do not need the legacy pad config */ if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS) && sd->entity.num_pads) { state->pads = kvcalloc(sd->entity.num_pads, sizeof(*state->pads), GFP_KERNEL); if (!state->pads) { ret = -ENOMEM; goto err; } } if (sd->internal_ops && sd->internal_ops->init_state) { /* * There can be no race at this point, but we lock the state * anyway to satisfy lockdep checks. */ v4l2_subdev_lock_state(state); ret = sd->internal_ops->init_state(sd, state); v4l2_subdev_unlock_state(state); if (ret) goto err; } return state; err: if (state && state->pads) kvfree(state->pads); kfree(state); return ERR_PTR(ret); } EXPORT_SYMBOL_GPL(__v4l2_subdev_state_alloc); void __v4l2_subdev_state_free(struct v4l2_subdev_state *state) { if (!state) return; mutex_destroy(&state->_lock); kfree(state->routing.routes); kvfree(state->stream_configs.configs); kvfree(state->pads); kfree(state); } EXPORT_SYMBOL_GPL(__v4l2_subdev_state_free); int __v4l2_subdev_init_finalize(struct v4l2_subdev *sd, const char *name, struct lock_class_key *key) { struct v4l2_subdev_state *state; struct device *dev = sd->dev; bool has_disable_streams; bool has_enable_streams; bool has_s_stream; /* Check that the subdevice implements the required features */ has_s_stream = v4l2_subdev_has_op(sd, video, s_stream); has_enable_streams = v4l2_subdev_has_op(sd, pad, enable_streams); has_disable_streams = v4l2_subdev_has_op(sd, pad, disable_streams); if (has_enable_streams != has_disable_streams) { dev_err(dev, "subdev '%s' must implement both or neither of .enable_streams() and .disable_streams()\n", sd->name); return -EINVAL; } if (sd->flags & V4L2_SUBDEV_FL_STREAMS) { if (has_s_stream && !has_enable_streams) { dev_err(dev, "subdev '%s' must implement .enable/disable_streams()\n", sd->name); return -EINVAL; } } if (sd->ctrl_handler) sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS; state = __v4l2_subdev_state_alloc(sd, name, key); if (IS_ERR(state)) return PTR_ERR(state); sd->active_state = state; return 0; } EXPORT_SYMBOL_GPL(__v4l2_subdev_init_finalize); void v4l2_subdev_cleanup(struct v4l2_subdev *sd) { struct v4l2_async_subdev_endpoint *ase, *ase_tmp; __v4l2_subdev_state_free(sd->active_state); sd->active_state = NULL; /* Uninitialised sub-device, bail out here. */ if (!sd->async_subdev_endpoint_list.next) return; list_for_each_entry_safe(ase, ase_tmp, &sd->async_subdev_endpoint_list, async_subdev_endpoint_entry) { list_del(&ase->async_subdev_endpoint_entry); kfree(ase); } } EXPORT_SYMBOL_GPL(v4l2_subdev_cleanup); struct v4l2_mbus_framefmt * __v4l2_subdev_state_get_format(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { struct v4l2_subdev_stream_configs *stream_configs; unsigned int i; if (WARN_ON_ONCE(!state)) return NULL; if (state->pads) { if (stream) return NULL; if (pad >= state->sd->entity.num_pads) return NULL; return &state->pads[pad].format; } lockdep_assert_held(state->lock); stream_configs = &state->stream_configs; for (i = 0; i < stream_configs->num_configs; ++i) { if (stream_configs->configs[i].pad == pad && stream_configs->configs[i].stream == stream) return &stream_configs->configs[i].fmt; } return NULL; } EXPORT_SYMBOL_GPL(__v4l2_subdev_state_get_format); struct v4l2_rect * __v4l2_subdev_state_get_crop(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { struct v4l2_subdev_stream_configs *stream_configs; unsigned int i; if (WARN_ON_ONCE(!state)) return NULL; if (state->pads) { if (stream) return NULL; if (pad >= state->sd->entity.num_pads) return NULL; return &state->pads[pad].crop; } lockdep_assert_held(state->lock); stream_configs = &state->stream_configs; for (i = 0; i < stream_configs->num_configs; ++i) { if (stream_configs->configs[i].pad == pad && stream_configs->configs[i].stream == stream) return &stream_configs->configs[i].crop; } return NULL; } EXPORT_SYMBOL_GPL(__v4l2_subdev_state_get_crop); struct v4l2_rect * __v4l2_subdev_state_get_compose(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { struct v4l2_subdev_stream_configs *stream_configs; unsigned int i; if (WARN_ON_ONCE(!state)) return NULL; if (state->pads) { if (stream) return NULL; if (pad >= state->sd->entity.num_pads) return NULL; return &state->pads[pad].compose; } lockdep_assert_held(state->lock); stream_configs = &state->stream_configs; for (i = 0; i < stream_configs->num_configs; ++i) { if (stream_configs->configs[i].pad == pad && stream_configs->configs[i].stream == stream) return &stream_configs->configs[i].compose; } return NULL; } EXPORT_SYMBOL_GPL(__v4l2_subdev_state_get_compose); struct v4l2_fract * __v4l2_subdev_state_get_interval(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { struct v4l2_subdev_stream_configs *stream_configs; unsigned int i; if (WARN_ON(!state)) return NULL; lockdep_assert_held(state->lock); if (state->pads) { if (stream) return NULL; if (pad >= state->sd->entity.num_pads) return NULL; return &state->pads[pad].interval; } lockdep_assert_held(state->lock); stream_configs = &state->stream_configs; for (i = 0; i < stream_configs->num_configs; ++i) { if (stream_configs->configs[i].pad == pad && stream_configs->configs[i].stream == stream) return &stream_configs->configs[i].interval; } return NULL; } EXPORT_SYMBOL_GPL(__v4l2_subdev_state_get_interval); #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static int v4l2_subdev_init_stream_configs(struct v4l2_subdev_stream_configs *stream_configs, const struct v4l2_subdev_krouting *routing) { struct v4l2_subdev_stream_configs new_configs = { 0 }; struct v4l2_subdev_route *route; u32 idx; /* Count number of formats needed */ for_each_active_route(routing, route) { /* * Each route needs a format on both ends of the route. */ new_configs.num_configs += 2; } if (new_configs.num_configs) { new_configs.configs = kvcalloc(new_configs.num_configs, sizeof(*new_configs.configs), GFP_KERNEL); if (!new_configs.configs) return -ENOMEM; } /* * Fill in the 'pad' and stream' value for each item in the array from * the routing table */ idx = 0; for_each_active_route(routing, route) { new_configs.configs[idx].pad = route->sink_pad; new_configs.configs[idx].stream = route->sink_stream; idx++; new_configs.configs[idx].pad = route->source_pad; new_configs.configs[idx].stream = route->source_stream; idx++; } kvfree(stream_configs->configs); *stream_configs = new_configs; return 0; } int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { struct v4l2_mbus_framefmt *fmt; fmt = v4l2_subdev_state_get_format(state, format->pad, format->stream); if (!fmt) return -EINVAL; format->format = *fmt; return 0; } EXPORT_SYMBOL_GPL(v4l2_subdev_get_fmt); int v4l2_subdev_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { struct v4l2_fract *interval; interval = v4l2_subdev_state_get_interval(state, fi->pad, fi->stream); if (!interval) return -EINVAL; fi->interval = *interval; return 0; } EXPORT_SYMBOL_GPL(v4l2_subdev_get_frame_interval); int v4l2_subdev_set_routing(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, const struct v4l2_subdev_krouting *routing) { struct v4l2_subdev_krouting *dst = &state->routing; const struct v4l2_subdev_krouting *src = routing; struct v4l2_subdev_krouting new_routing = { 0 }; size_t bytes; int r; if (unlikely(check_mul_overflow((size_t)src->num_routes, sizeof(*src->routes), &bytes))) return -EOVERFLOW; lockdep_assert_held(state->lock); if (src->num_routes > 0) { new_routing.routes = kmemdup(src->routes, bytes, GFP_KERNEL); if (!new_routing.routes) return -ENOMEM; } new_routing.num_routes = src->num_routes; r = v4l2_subdev_init_stream_configs(&state->stream_configs, &new_routing); if (r) { kfree(new_routing.routes); return r; } kfree(dst->routes); *dst = new_routing; return 0; } EXPORT_SYMBOL_GPL(v4l2_subdev_set_routing); struct v4l2_subdev_route * __v4l2_subdev_next_active_route(const struct v4l2_subdev_krouting *routing, struct v4l2_subdev_route *route) { if (route) ++route; else route = &routing->routes[0]; for (; route < routing->routes + routing->num_routes; ++route) { if (!(route->flags & V4L2_SUBDEV_ROUTE_FL_ACTIVE)) continue; return route; } return NULL; } EXPORT_SYMBOL_GPL(__v4l2_subdev_next_active_route); int v4l2_subdev_set_routing_with_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, const struct v4l2_subdev_krouting *routing, const struct v4l2_mbus_framefmt *fmt) { struct v4l2_subdev_stream_configs *stream_configs; unsigned int i; int ret; ret = v4l2_subdev_set_routing(sd, state, routing); if (ret) return ret; stream_configs = &state->stream_configs; for (i = 0; i < stream_configs->num_configs; ++i) stream_configs->configs[i].fmt = *fmt; return 0; } EXPORT_SYMBOL_GPL(v4l2_subdev_set_routing_with_fmt); int v4l2_subdev_routing_find_opposite_end(const struct v4l2_subdev_krouting *routing, u32 pad, u32 stream, u32 *other_pad, u32 *other_stream) { unsigned int i; for (i = 0; i < routing->num_routes; ++i) { struct v4l2_subdev_route *route = &routing->routes[i]; if (route->source_pad == pad && route->source_stream == stream) { if (other_pad) *other_pad = route->sink_pad; if (other_stream) *other_stream = route->sink_stream; return 0; } if (route->sink_pad == pad && route->sink_stream == stream) { if (other_pad) *other_pad = route->source_pad; if (other_stream) *other_stream = route->source_stream; return 0; } } return -EINVAL; } EXPORT_SYMBOL_GPL(v4l2_subdev_routing_find_opposite_end); struct v4l2_mbus_framefmt * v4l2_subdev_state_get_opposite_stream_format(struct v4l2_subdev_state *state, u32 pad, u32 stream) { u32 other_pad, other_stream; int ret; ret = v4l2_subdev_routing_find_opposite_end(&state->routing, pad, stream, &other_pad, &other_stream); if (ret) return NULL; return v4l2_subdev_state_get_format(state, other_pad, other_stream); } EXPORT_SYMBOL_GPL(v4l2_subdev_state_get_opposite_stream_format); u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state, u32 pad0, u32 pad1, u64 *streams) { const struct v4l2_subdev_krouting *routing = &state->routing; struct v4l2_subdev_route *route; u64 streams0 = 0; u64 streams1 = 0; for_each_active_route(routing, route) { if (route->sink_pad == pad0 && route->source_pad == pad1 && (*streams & BIT_ULL(route->sink_stream))) { streams0 |= BIT_ULL(route->sink_stream); streams1 |= BIT_ULL(route->source_stream); } if (route->source_pad == pad0 && route->sink_pad == pad1 && (*streams & BIT_ULL(route->source_stream))) { streams0 |= BIT_ULL(route->source_stream); streams1 |= BIT_ULL(route->sink_stream); } } *streams = streams0; return streams1; } EXPORT_SYMBOL_GPL(v4l2_subdev_state_xlate_streams); int v4l2_subdev_routing_validate(struct v4l2_subdev *sd, const struct v4l2_subdev_krouting *routing, enum v4l2_subdev_routing_restriction disallow) { u32 *remote_pads = NULL; unsigned int i, j; int ret = -EINVAL; if (disallow & (V4L2_SUBDEV_ROUTING_NO_STREAM_MIX | V4L2_SUBDEV_ROUTING_NO_MULTIPLEXING)) { remote_pads = kcalloc(sd->entity.num_pads, sizeof(*remote_pads), GFP_KERNEL); if (!remote_pads) return -ENOMEM; for (i = 0; i < sd->entity.num_pads; ++i) remote_pads[i] = U32_MAX; } for (i = 0; i < routing->num_routes; ++i) { const struct v4l2_subdev_route *route = &routing->routes[i]; /* Validate the sink and source pad numbers. */ if (route->sink_pad >= sd->entity.num_pads || !(sd->entity.pads[route->sink_pad].flags & MEDIA_PAD_FL_SINK)) { dev_dbg(sd->dev, "route %u sink (%u) is not a sink pad\n", i, route->sink_pad); goto out; } if (route->source_pad >= sd->entity.num_pads || !(sd->entity.pads[route->source_pad].flags & MEDIA_PAD_FL_SOURCE)) { dev_dbg(sd->dev, "route %u source (%u) is not a source pad\n", i, route->source_pad); goto out; } /* * V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX: all streams from a * sink pad must be routed to a single source pad. */ if (disallow & V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX) { if (remote_pads[route->sink_pad] != U32_MAX && remote_pads[route->sink_pad] != route->source_pad) { dev_dbg(sd->dev, "route %u attempts to mix %s streams\n", i, "sink"); goto out; } } /* * V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX: all streams on a * source pad must originate from a single sink pad. */ if (disallow & V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX) { if (remote_pads[route->source_pad] != U32_MAX && remote_pads[route->source_pad] != route->sink_pad) { dev_dbg(sd->dev, "route %u attempts to mix %s streams\n", i, "source"); goto out; } } /* * V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING: Pads on the sink * side can not do stream multiplexing, i.e. there can be only * a single stream in a sink pad. */ if (disallow & V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING) { if (remote_pads[route->sink_pad] != U32_MAX) { dev_dbg(sd->dev, "route %u attempts to multiplex on %s pad %u\n", i, "sink", route->sink_pad); goto out; } } /* * V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING: Pads on the * source side can not do stream multiplexing, i.e. there can * be only a single stream in a source pad. */ if (disallow & V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING) { if (remote_pads[route->source_pad] != U32_MAX) { dev_dbg(sd->dev, "route %u attempts to multiplex on %s pad %u\n", i, "source", route->source_pad); goto out; } } if (remote_pads) { remote_pads[route->sink_pad] = route->source_pad; remote_pads[route->source_pad] = route->sink_pad; } for (j = i + 1; j < routing->num_routes; ++j) { const struct v4l2_subdev_route *r = &routing->routes[j]; /* * V4L2_SUBDEV_ROUTING_NO_1_TO_N: No two routes can * originate from the same (sink) stream. */ if ((disallow & V4L2_SUBDEV_ROUTING_NO_1_TO_N) && route->sink_pad == r->sink_pad && route->sink_stream == r->sink_stream) { dev_dbg(sd->dev, "routes %u and %u originate from same sink (%u/%u)\n", i, j, route->sink_pad, route->sink_stream); goto out; } /* * V4L2_SUBDEV_ROUTING_NO_N_TO_1: No two routes can end * at the same (source) stream. */ if ((disallow & V4L2_SUBDEV_ROUTING_NO_N_TO_1) && route->source_pad == r->source_pad && route->source_stream == r->source_stream) { dev_dbg(sd->dev, "routes %u and %u end at same source (%u/%u)\n", i, j, route->source_pad, route->source_stream); goto out; } } } ret = 0; out: kfree(remote_pads); return ret; } EXPORT_SYMBOL_GPL(v4l2_subdev_routing_validate); static void v4l2_subdev_collect_streams(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask, u64 *found_streams, u64 *enabled_streams) { if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) { *found_streams = BIT_ULL(0); *enabled_streams = (sd->enabled_pads & BIT_ULL(pad)) ? BIT_ULL(0) : 0; dev_dbg(sd->dev, "collect_streams: sub-device \"%s\" does not support streams\n", sd->entity.name); return; } *found_streams = 0; *enabled_streams = 0; for (unsigned int i = 0; i < state->stream_configs.num_configs; ++i) { const struct v4l2_subdev_stream_config *cfg = &state->stream_configs.configs[i]; if (cfg->pad != pad || !(streams_mask & BIT_ULL(cfg->stream))) continue; *found_streams |= BIT_ULL(cfg->stream); if (cfg->enabled) *enabled_streams |= BIT_ULL(cfg->stream); } dev_dbg(sd->dev, "collect_streams: \"%s\":%u: found %#llx enabled %#llx\n", sd->entity.name, pad, *found_streams, *enabled_streams); } static void v4l2_subdev_set_streams_enabled(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask, bool enabled) { if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) { if (enabled) sd->enabled_pads |= BIT_ULL(pad); else sd->enabled_pads &= ~BIT_ULL(pad); return; } for (unsigned int i = 0; i < state->stream_configs.num_configs; ++i) { struct v4l2_subdev_stream_config *cfg = &state->stream_configs.configs[i]; if (cfg->pad == pad && (streams_mask & BIT_ULL(cfg->stream))) cfg->enabled = enabled; } } int v4l2_subdev_enable_streams(struct v4l2_subdev *sd, u32 pad, u64 streams_mask) { struct device *dev = sd->entity.graph_obj.mdev->dev; struct v4l2_subdev_state *state; bool already_streaming; u64 enabled_streams; u64 found_streams; bool use_s_stream; int ret; dev_dbg(dev, "enable streams \"%s\":%u/%#llx\n", sd->entity.name, pad, streams_mask); /* A few basic sanity checks first. */ if (pad >= sd->entity.num_pads) return -EINVAL; if (!(sd->entity.pads[pad].flags & MEDIA_PAD_FL_SOURCE)) return -EOPNOTSUPP; /* * We use a 64-bit bitmask for tracking enabled pads, so only subdevices * with 64 pads or less can be supported. */ if (pad >= sizeof(sd->enabled_pads) * BITS_PER_BYTE) return -EOPNOTSUPP; if (!streams_mask) return 0; /* Fallback on .s_stream() if .enable_streams() isn't available. */ use_s_stream = !v4l2_subdev_has_op(sd, pad, enable_streams); if (!use_s_stream) state = v4l2_subdev_lock_and_get_active_state(sd); else state = NULL; /* * Verify that the requested streams exist and that they are not * already enabled. */ v4l2_subdev_collect_streams(sd, state, pad, streams_mask, &found_streams, &enabled_streams); if (found_streams != streams_mask) { dev_dbg(dev, "streams 0x%llx not found on %s:%u\n", streams_mask & ~found_streams, sd->entity.name, pad); ret = -EINVAL; goto done; } if (enabled_streams) { dev_dbg(dev, "streams 0x%llx already enabled on %s:%u\n", enabled_streams, sd->entity.name, pad); ret = -EALREADY; goto done; } already_streaming = v4l2_subdev_is_streaming(sd); if (!use_s_stream) { /* Call the .enable_streams() operation. */ ret = v4l2_subdev_call(sd, pad, enable_streams, state, pad, streams_mask); } else { /* Start streaming when the first pad is enabled. */ if (!already_streaming) ret = v4l2_subdev_call(sd, video, s_stream, 1); else ret = 0; } if (ret) { dev_dbg(dev, "enable streams %u:%#llx failed: %d\n", pad, streams_mask, ret); goto done; } /* Mark the streams as enabled. */ v4l2_subdev_set_streams_enabled(sd, state, pad, streams_mask, true); /* * TODO: When all the drivers have been changed to use * v4l2_subdev_enable_streams() and v4l2_subdev_disable_streams(), * instead of calling .s_stream() operation directly, we can remove * the privacy LED handling from call_s_stream() and do it here * for all cases. */ if (!use_s_stream && !already_streaming) v4l2_subdev_enable_privacy_led(sd); done: if (!use_s_stream) v4l2_subdev_unlock_state(state); return ret; } EXPORT_SYMBOL_GPL(v4l2_subdev_enable_streams); int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad, u64 streams_mask) { struct device *dev = sd->entity.graph_obj.mdev->dev; struct v4l2_subdev_state *state; u64 enabled_streams; u64 found_streams; bool use_s_stream; int ret; dev_dbg(dev, "disable streams \"%s\":%u/%#llx\n", sd->entity.name, pad, streams_mask); /* A few basic sanity checks first. */ if (pad >= sd->entity.num_pads) return -EINVAL; if (!(sd->entity.pads[pad].flags & MEDIA_PAD_FL_SOURCE)) return -EOPNOTSUPP; /* * We use a 64-bit bitmask for tracking enabled pads, so only subdevices * with 64 pads or less can be supported. */ if (pad >= sizeof(sd->enabled_pads) * BITS_PER_BYTE) return -EOPNOTSUPP; if (!streams_mask) return 0; /* Fallback on .s_stream() if .disable_streams() isn't available. */ use_s_stream = !v4l2_subdev_has_op(sd, pad, disable_streams); if (!use_s_stream) state = v4l2_subdev_lock_and_get_active_state(sd); else state = NULL; /* * Verify that the requested streams exist and that they are not * already disabled. */ v4l2_subdev_collect_streams(sd, state, pad, streams_mask, &found_streams, &enabled_streams); if (found_streams != streams_mask) { dev_dbg(dev, "streams 0x%llx not found on %s:%u\n", streams_mask & ~found_streams, sd->entity.name, pad); ret = -EINVAL; goto done; } if (enabled_streams != streams_mask) { dev_dbg(dev, "streams 0x%llx already disabled on %s:%u\n", streams_mask & ~enabled_streams, sd->entity.name, pad); ret = -EALREADY; goto done; } if (!use_s_stream) { /* Call the .disable_streams() operation. */ ret = v4l2_subdev_call(sd, pad, disable_streams, state, pad, streams_mask); } else { /* Stop streaming when the last streams are disabled. */ if (!(sd->enabled_pads & ~BIT_ULL(pad))) ret = v4l2_subdev_call(sd, video, s_stream, 0); else ret = 0; } if (ret) { dev_dbg(dev, "disable streams %u:%#llx failed: %d\n", pad, streams_mask, ret); goto done; } v4l2_subdev_set_streams_enabled(sd, state, pad, streams_mask, false); done: if (!use_s_stream) { if (!v4l2_subdev_is_streaming(sd)) v4l2_subdev_disable_privacy_led(sd); v4l2_subdev_unlock_state(state); } return ret; } EXPORT_SYMBOL_GPL(v4l2_subdev_disable_streams); int v4l2_subdev_s_stream_helper(struct v4l2_subdev *sd, int enable) { struct v4l2_subdev_state *state; struct v4l2_subdev_route *route; struct media_pad *pad; u64 source_mask = 0; int pad_index = -1; /* * Find the source pad. This helper is meant for subdevs that have a * single source pad, so failures shouldn't happen, but catch them * loudly nonetheless as they indicate a driver bug. */ media_entity_for_each_pad(&sd->entity, pad) { if (pad->flags & MEDIA_PAD_FL_SOURCE) { pad_index = pad->index; break; } } if (WARN_ON(pad_index == -1)) return -EINVAL; if (sd->flags & V4L2_SUBDEV_FL_STREAMS) { /* * As there's a single source pad, just collect all the source * streams. */ state = v4l2_subdev_lock_and_get_active_state(sd); for_each_active_route(&state->routing, route) source_mask |= BIT_ULL(route->source_stream); v4l2_subdev_unlock_state(state); } else { /* * For non-streams subdevices, there's a single implicit stream * per pad. */ source_mask = BIT_ULL(0); } if (enable) return v4l2_subdev_enable_streams(sd, pad_index, source_mask); else return v4l2_subdev_disable_streams(sd, pad_index, source_mask); } EXPORT_SYMBOL_GPL(v4l2_subdev_s_stream_helper); #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ #endif /* CONFIG_MEDIA_CONTROLLER */ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) { INIT_LIST_HEAD(&sd->list); BUG_ON(!ops); sd->ops = ops; sd->v4l2_dev = NULL; sd->flags = 0; sd->name[0] = '\0'; sd->grp_id = 0; sd->dev_priv = NULL; sd->host_priv = NULL; sd->privacy_led = NULL; INIT_LIST_HEAD(&sd->async_subdev_endpoint_list); #if defined(CONFIG_MEDIA_CONTROLLER) sd->entity.name = sd->name; sd->entity.obj_type = MEDIA_ENTITY_TYPE_V4L2_SUBDEV; sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; #endif } EXPORT_SYMBOL(v4l2_subdev_init); void v4l2_subdev_notify_event(struct v4l2_subdev *sd, const struct v4l2_event *ev) { v4l2_event_queue(sd->devnode, ev); v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT, (void *)ev); } EXPORT_SYMBOL_GPL(v4l2_subdev_notify_event); bool v4l2_subdev_is_streaming(struct v4l2_subdev *sd) { struct v4l2_subdev_state *state; if (!v4l2_subdev_has_op(sd, pad, enable_streams)) return sd->s_stream_enabled; if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) return !!sd->enabled_pads; state = v4l2_subdev_get_locked_active_state(sd); for (unsigned int i = 0; i < state->stream_configs.num_configs; ++i) { const struct v4l2_subdev_stream_config *cfg; cfg = &state->stream_configs.configs[i]; if (cfg->enabled) return true; } return false; } EXPORT_SYMBOL_GPL(v4l2_subdev_is_streaming); int v4l2_subdev_get_privacy_led(struct v4l2_subdev *sd) { #if IS_REACHABLE(CONFIG_LEDS_CLASS) sd->privacy_led = led_get(sd->dev, "privacy-led"); if (IS_ERR(sd->privacy_led) && PTR_ERR(sd->privacy_led) != -ENOENT) return dev_err_probe(sd->dev, PTR_ERR(sd->privacy_led), "getting privacy LED\n"); if (!IS_ERR_OR_NULL(sd->privacy_led)) { mutex_lock(&sd->privacy_led->led_access); led_sysfs_disable(sd->privacy_led); led_trigger_remove(sd->privacy_led); led_set_brightness(sd->privacy_led, 0); mutex_unlock(&sd->privacy_led->led_access); } #endif return 0; } EXPORT_SYMBOL_GPL(v4l2_subdev_get_privacy_led); void v4l2_subdev_put_privacy_led(struct v4l2_subdev *sd) { #if IS_REACHABLE(CONFIG_LEDS_CLASS) if (!IS_ERR_OR_NULL(sd->privacy_led)) { mutex_lock(&sd->privacy_led->led_access); led_sysfs_enable(sd->privacy_led); mutex_unlock(&sd->privacy_led->led_access); led_put(sd->privacy_led); } #endif } EXPORT_SYMBOL_GPL(v4l2_subdev_put_privacy_led); |
| 1 1 3 1 4 1 3 3 3 2 1 2 1 1 1 5 5 5 1 4 4 5 2 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Roccat Isku driver for Linux * * Copyright (c) 2011 Stefan Achatz <erazor_de@users.sourceforge.net> */ /* */ /* * Roccat Isku is a gamer keyboard with macro keys that can be configured in * 5 profiles. */ #include <linux/device.h> #include <linux/input.h> #include <linux/hid.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/hid-roccat.h> #include "hid-ids.h" #include "hid-roccat-common.h" #include "hid-roccat-isku.h" static void isku_profile_activated(struct isku_device *isku, uint new_profile) { isku->actual_profile = new_profile; } static int isku_receive(struct usb_device *usb_dev, uint command, void *buf, uint size) { return roccat_common2_receive(usb_dev, command, buf, size); } static int isku_get_actual_profile(struct usb_device *usb_dev) { struct isku_actual_profile buf; int retval; retval = isku_receive(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE, &buf, sizeof(struct isku_actual_profile)); return retval ? retval : buf.actual_profile; } static int isku_set_actual_profile(struct usb_device *usb_dev, int new_profile) { struct isku_actual_profile buf; buf.command = ISKU_COMMAND_ACTUAL_PROFILE; buf.size = sizeof(struct isku_actual_profile); buf.actual_profile = new_profile; return roccat_common2_send_with_status(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE, &buf, sizeof(struct isku_actual_profile)); } static ssize_t isku_sysfs_show_actual_profile(struct device *dev, struct device_attribute *attr, char *buf) { struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); return sysfs_emit(buf, "%d\n", isku->actual_profile); } static ssize_t isku_sysfs_set_actual_profile(struct device *dev, struct device_attribute *attr, char const *buf, size_t size) { struct isku_device *isku; struct usb_device *usb_dev; unsigned long profile; int retval; struct isku_roccat_report roccat_report; dev = dev->parent->parent; isku = hid_get_drvdata(dev_get_drvdata(dev)); usb_dev = interface_to_usbdev(to_usb_interface(dev)); retval = kstrtoul(buf, 10, &profile); if (retval) return retval; if (profile > 4) return -EINVAL; mutex_lock(&isku->isku_lock); retval = isku_set_actual_profile(usb_dev, profile); if (retval) { mutex_unlock(&isku->isku_lock); return retval; } isku_profile_activated(isku, profile); roccat_report.event = ISKU_REPORT_BUTTON_EVENT_PROFILE; roccat_report.data1 = profile + 1; roccat_report.data2 = 0; roccat_report.profile = profile + 1; roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report); mutex_unlock(&isku->isku_lock); return size; } static DEVICE_ATTR(actual_profile, 0660, isku_sysfs_show_actual_profile, isku_sysfs_set_actual_profile); static struct attribute *isku_attrs[] = { &dev_attr_actual_profile.attr, NULL, }; static ssize_t isku_sysfs_read(struct file *fp, struct kobject *kobj, char *buf, loff_t off, size_t count, size_t real_size, uint command) { struct device *dev = kobj_to_dev(kobj)->parent->parent; struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev)); struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); int retval; if (off >= real_size) return 0; if (off != 0 || count > real_size) return -EINVAL; mutex_lock(&isku->isku_lock); retval = isku_receive(usb_dev, command, buf, count); mutex_unlock(&isku->isku_lock); return retval ? retval : count; } static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj, void const *buf, loff_t off, size_t count, size_t real_size, uint command) { struct device *dev = kobj_to_dev(kobj)->parent->parent; struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev)); struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); int retval; if (off != 0 || count > real_size) return -EINVAL; mutex_lock(&isku->isku_lock); retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, count); mutex_unlock(&isku->isku_lock); return retval ? retval : count; } #define ISKU_SYSFS_W(thingy, THINGY) \ static ssize_t isku_sysfs_write_ ## thingy(struct file *fp, struct kobject *kobj, \ const struct bin_attribute *attr, char *buf, \ loff_t off, size_t count) \ { \ return isku_sysfs_write(fp, kobj, buf, off, count, \ ISKU_SIZE_ ## THINGY, ISKU_COMMAND_ ## THINGY); \ } #define ISKU_SYSFS_R(thingy, THINGY) \ static ssize_t isku_sysfs_read_ ## thingy(struct file *fp, struct kobject *kobj, \ const struct bin_attribute *attr, char *buf, \ loff_t off, size_t count) \ { \ return isku_sysfs_read(fp, kobj, buf, off, count, \ ISKU_SIZE_ ## THINGY, ISKU_COMMAND_ ## THINGY); \ } #define ISKU_SYSFS_RW(thingy, THINGY) \ ISKU_SYSFS_R(thingy, THINGY) \ ISKU_SYSFS_W(thingy, THINGY) #define ISKU_BIN_ATTR_RW(thingy, THINGY) \ ISKU_SYSFS_RW(thingy, THINGY); \ static const struct bin_attribute bin_attr_##thingy = { \ .attr = { .name = #thingy, .mode = 0660 }, \ .size = ISKU_SIZE_ ## THINGY, \ .read = isku_sysfs_read_ ## thingy, \ .write = isku_sysfs_write_ ## thingy \ } #define ISKU_BIN_ATTR_R(thingy, THINGY) \ ISKU_SYSFS_R(thingy, THINGY); \ static const struct bin_attribute bin_attr_##thingy = { \ .attr = { .name = #thingy, .mode = 0440 }, \ .size = ISKU_SIZE_ ## THINGY, \ .read = isku_sysfs_read_ ## thingy, \ } #define ISKU_BIN_ATTR_W(thingy, THINGY) \ ISKU_SYSFS_W(thingy, THINGY); \ static const struct bin_attribute bin_attr_##thingy = { \ .attr = { .name = #thingy, .mode = 0220 }, \ .size = ISKU_SIZE_ ## THINGY, \ .write = isku_sysfs_write_ ## thingy \ } ISKU_BIN_ATTR_RW(macro, MACRO); ISKU_BIN_ATTR_RW(keys_function, KEYS_FUNCTION); ISKU_BIN_ATTR_RW(keys_easyzone, KEYS_EASYZONE); ISKU_BIN_ATTR_RW(keys_media, KEYS_MEDIA); ISKU_BIN_ATTR_RW(keys_thumbster, KEYS_THUMBSTER); ISKU_BIN_ATTR_RW(keys_macro, KEYS_MACRO); ISKU_BIN_ATTR_RW(keys_capslock, KEYS_CAPSLOCK); ISKU_BIN_ATTR_RW(light, LIGHT); ISKU_BIN_ATTR_RW(key_mask, KEY_MASK); ISKU_BIN_ATTR_RW(last_set, LAST_SET); ISKU_BIN_ATTR_W(talk, TALK); ISKU_BIN_ATTR_W(talkfx, TALKFX); ISKU_BIN_ATTR_W(control, CONTROL); ISKU_BIN_ATTR_W(reset, RESET); ISKU_BIN_ATTR_R(info, INFO); static const struct bin_attribute *const isku_bin_attributes[] = { &bin_attr_macro, &bin_attr_keys_function, &bin_attr_keys_easyzone, &bin_attr_keys_media, &bin_attr_keys_thumbster, &bin_attr_keys_macro, &bin_attr_keys_capslock, &bin_attr_light, &bin_attr_key_mask, &bin_attr_last_set, &bin_attr_talk, &bin_attr_talkfx, &bin_attr_control, &bin_attr_reset, &bin_attr_info, NULL, }; static const struct attribute_group isku_group = { .attrs = isku_attrs, .bin_attrs = isku_bin_attributes, }; static const struct attribute_group *isku_groups[] = { &isku_group, NULL, }; static const struct class isku_class = { .name = "isku", .dev_groups = isku_groups, }; static int isku_init_isku_device_struct(struct usb_device *usb_dev, struct isku_device *isku) { int retval; mutex_init(&isku->isku_lock); retval = isku_get_actual_profile(usb_dev); if (retval < 0) return retval; isku_profile_activated(isku, retval); return 0; } static int isku_init_specials(struct hid_device *hdev) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); struct usb_device *usb_dev = interface_to_usbdev(intf); struct isku_device *isku; int retval; if (intf->cur_altsetting->desc.bInterfaceProtocol != ISKU_USB_INTERFACE_PROTOCOL) { hid_set_drvdata(hdev, NULL); return 0; } isku = kzalloc(sizeof(*isku), GFP_KERNEL); if (!isku) { hid_err(hdev, "can't alloc device descriptor\n"); return -ENOMEM; } hid_set_drvdata(hdev, isku); retval = isku_init_isku_device_struct(usb_dev, isku); if (retval) { hid_err(hdev, "couldn't init struct isku_device\n"); goto exit_free; } retval = roccat_connect(&isku_class, hdev, sizeof(struct isku_roccat_report)); if (retval < 0) { hid_err(hdev, "couldn't init char dev\n"); } else { isku->chrdev_minor = retval; isku->roccat_claimed = 1; } return 0; exit_free: kfree(isku); return retval; } static void isku_remove_specials(struct hid_device *hdev) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); struct isku_device *isku; if (intf->cur_altsetting->desc.bInterfaceProtocol != ISKU_USB_INTERFACE_PROTOCOL) return; isku = hid_get_drvdata(hdev); if (isku->roccat_claimed) roccat_disconnect(isku->chrdev_minor); kfree(isku); } static int isku_probe(struct hid_device *hdev, const struct hid_device_id *id) { int retval; if (!hid_is_usb(hdev)) return -EINVAL; retval = hid_parse(hdev); if (retval) { hid_err(hdev, "parse failed\n"); goto exit; } retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT); if (retval) { hid_err(hdev, "hw start failed\n"); goto exit; } retval = isku_init_specials(hdev); if (retval) { hid_err(hdev, "couldn't install keyboard\n"); goto exit_stop; } return 0; exit_stop: hid_hw_stop(hdev); exit: return retval; } static void isku_remove(struct hid_device *hdev) { isku_remove_specials(hdev); hid_hw_stop(hdev); } static void isku_keep_values_up_to_date(struct isku_device *isku, u8 const *data) { struct isku_report_button const *button_report; switch (data[0]) { case ISKU_REPORT_NUMBER_BUTTON: button_report = (struct isku_report_button const *)data; switch (button_report->event) { case ISKU_REPORT_BUTTON_EVENT_PROFILE: isku_profile_activated(isku, button_report->data1 - 1); break; } break; } } static void isku_report_to_chrdev(struct isku_device const *isku, u8 const *data) { struct isku_roccat_report roccat_report; struct isku_report_button const *button_report; if (data[0] != ISKU_REPORT_NUMBER_BUTTON) return; button_report = (struct isku_report_button const *)data; roccat_report.event = button_report->event; roccat_report.data1 = button_report->data1; roccat_report.data2 = button_report->data2; roccat_report.profile = isku->actual_profile + 1; roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report); } static int isku_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); struct isku_device *isku = hid_get_drvdata(hdev); if (intf->cur_altsetting->desc.bInterfaceProtocol != ISKU_USB_INTERFACE_PROTOCOL) return 0; if (isku == NULL) return 0; isku_keep_values_up_to_date(isku, data); if (isku->roccat_claimed) isku_report_to_chrdev(isku, data); return 0; } static const struct hid_device_id isku_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) }, { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) }, { } }; MODULE_DEVICE_TABLE(hid, isku_devices); static struct hid_driver isku_driver = { .name = "isku", .id_table = isku_devices, .probe = isku_probe, .remove = isku_remove, .raw_event = isku_raw_event }; static int __init isku_init(void) { int retval; retval = class_register(&isku_class); if (retval) return retval; retval = hid_register_driver(&isku_driver); if (retval) class_unregister(&isku_class); return retval; } static void __exit isku_exit(void) { hid_unregister_driver(&isku_driver); class_unregister(&isku_class); } module_init(isku_init); module_exit(isku_exit); MODULE_AUTHOR("Stefan Achatz"); MODULE_DESCRIPTION("USB Roccat Isku/FX driver"); MODULE_LICENSE("GPL v2"); |
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SPDX-License-Identifier: GPL-2.0-only /* * mac80211 - channel management * Copyright 2020 - 2025 Intel Corporation */ #include <linux/nl80211.h> #include <linux/export.h> #include <linux/rtnetlink.h> #include <net/cfg80211.h> #include "ieee80211_i.h" #include "driver-ops.h" #include "rate.h" static int ieee80211_chanctx_num_assigned(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { struct ieee80211_link_data *link; int num = 0; lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) num++; return num; } static int ieee80211_chanctx_num_reserved(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { struct ieee80211_link_data *link; int num = 0; lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) num++; return num; } int ieee80211_chanctx_refcount(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { return ieee80211_chanctx_num_assigned(local, ctx) + ieee80211_chanctx_num_reserved(local, ctx); } static int ieee80211_num_chanctx(struct ieee80211_local *local, int radio_idx) { struct ieee80211_chanctx *ctx; int num = 0; lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(ctx, &local->chanctx_list, list) { if (radio_idx >= 0 && ctx->conf.radio_idx != radio_idx) continue; num++; } return num; } static bool ieee80211_can_create_new_chanctx(struct ieee80211_local *local, int radio_idx) { lockdep_assert_wiphy(local->hw.wiphy); return ieee80211_num_chanctx(local, radio_idx) < ieee80211_max_num_channels(local, radio_idx); } static struct ieee80211_chanctx * ieee80211_link_get_chanctx(struct ieee80211_link_data *link) { struct ieee80211_local *local __maybe_unused = link->sdata->local; struct ieee80211_chanctx_conf *conf; conf = rcu_dereference_protected(link->conf->chanctx_conf, lockdep_is_held(&local->hw.wiphy->mtx)); if (!conf) return NULL; return container_of(conf, struct ieee80211_chanctx, conf); } bool ieee80211_chanreq_identical(const struct ieee80211_chan_req *a, const struct ieee80211_chan_req *b) { if (!cfg80211_chandef_identical(&a->oper, &b->oper)) return false; if (!a->ap.chan && !b->ap.chan) return true; return cfg80211_chandef_identical(&a->ap, &b->ap); } static const struct ieee80211_chan_req * ieee80211_chanreq_compatible(const struct ieee80211_chan_req *a, const struct ieee80211_chan_req *b, struct ieee80211_chan_req *tmp) { const struct cfg80211_chan_def *compat; if (a->ap.chan && b->ap.chan && !cfg80211_chandef_identical(&a->ap, &b->ap)) return NULL; compat = cfg80211_chandef_compatible(&a->oper, &b->oper); if (!compat) return NULL; /* Note: later code assumes this always fills & returns tmp if compat */ tmp->oper = *compat; tmp->ap = a->ap.chan ? a->ap : b->ap; return tmp; } static const struct ieee80211_chan_req * ieee80211_chanctx_compatible(struct ieee80211_chanctx *ctx, const struct ieee80211_chan_req *req, struct ieee80211_chan_req *tmp) { const struct ieee80211_chan_req *ret; struct ieee80211_chan_req tmp2; *tmp = (struct ieee80211_chan_req){ .oper = ctx->conf.def, .ap = ctx->conf.ap, }; ret = ieee80211_chanreq_compatible(tmp, req, &tmp2); if (!ret) return NULL; *tmp = *ret; return tmp; } static const struct ieee80211_chan_req * ieee80211_chanctx_reserved_chanreq(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, const struct ieee80211_chan_req *req, struct ieee80211_chan_req *tmp) { struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON(!req)) return NULL; list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) { req = ieee80211_chanreq_compatible(&link->reserved, req, tmp); if (!req) break; } return req; } static const struct ieee80211_chan_req * ieee80211_chanctx_non_reserved_chandef(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, const struct ieee80211_chan_req *compat, struct ieee80211_chan_req *tmp) { struct ieee80211_link_data *link; const struct ieee80211_chan_req *comp_def = compat; lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) { struct ieee80211_bss_conf *link_conf = link->conf; if (link->reserved_chanctx) continue; comp_def = ieee80211_chanreq_compatible(&link_conf->chanreq, comp_def, tmp); if (!comp_def) break; } return comp_def; } static bool ieee80211_chanctx_can_reserve(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, const struct ieee80211_chan_req *req) { struct ieee80211_chan_req tmp; lockdep_assert_wiphy(local->hw.wiphy); if (!ieee80211_chanctx_reserved_chanreq(local, ctx, req, &tmp)) return false; if (!ieee80211_chanctx_non_reserved_chandef(local, ctx, req, &tmp)) return false; if (!list_empty(&ctx->reserved_links) && ieee80211_chanctx_reserved_chanreq(local, ctx, req, &tmp)) return true; return false; } static struct ieee80211_chanctx * ieee80211_find_reservation_chanctx(struct ieee80211_local *local, const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode) { struct ieee80211_chanctx *ctx; lockdep_assert_wiphy(local->hw.wiphy); if (mode == IEEE80211_CHANCTX_EXCLUSIVE) return NULL; list_for_each_entry(ctx, &local->chanctx_list, list) { if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) continue; if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) continue; if (!ieee80211_chanctx_can_reserve(local, ctx, chanreq)) continue; return ctx; } return NULL; } static enum nl80211_chan_width ieee80211_get_sta_bw(struct sta_info *sta, unsigned int link_id) { enum ieee80211_sta_rx_bandwidth width; struct link_sta_info *link_sta; link_sta = wiphy_dereference(sta->local->hw.wiphy, sta->link[link_id]); /* no effect if this STA has no presence on this link */ if (!link_sta) return NL80211_CHAN_WIDTH_20_NOHT; /* * We assume that TX/RX might be asymmetric (so e.g. VHT operating * mode notification changes what a STA wants to receive, but not * necessarily what it will transmit to us), and therefore use the * capabilities here. Calling it RX bandwidth capability is a bit * wrong though, since capabilities are in fact symmetric. */ width = ieee80211_sta_cap_rx_bw(link_sta); switch (width) { case IEEE80211_STA_RX_BW_20: if (link_sta->pub->ht_cap.ht_supported) return NL80211_CHAN_WIDTH_20; else return NL80211_CHAN_WIDTH_20_NOHT; case IEEE80211_STA_RX_BW_40: return NL80211_CHAN_WIDTH_40; case IEEE80211_STA_RX_BW_80: return NL80211_CHAN_WIDTH_80; case IEEE80211_STA_RX_BW_160: /* * This applied for both 160 and 80+80. since we use * the returned value to consider degradation of * ctx->conf.min_def, we have to make sure to take * the bigger one (NL80211_CHAN_WIDTH_160). * Otherwise we might try degrading even when not * needed, as the max required sta_bw returned (80+80) * might be smaller than the configured bw (160). */ return NL80211_CHAN_WIDTH_160; case IEEE80211_STA_RX_BW_320: return NL80211_CHAN_WIDTH_320; default: WARN_ON(1); return NL80211_CHAN_WIDTH_20; } } static enum nl80211_chan_width ieee80211_get_max_required_bw(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; unsigned int link_id = link->link_id; enum nl80211_chan_width max_bw = NL80211_CHAN_WIDTH_20_NOHT; struct sta_info *sta; lockdep_assert_wiphy(sdata->local->hw.wiphy); list_for_each_entry(sta, &sdata->local->sta_list, list) { if (sdata != sta->sdata && !(sta->sdata->bss && sta->sdata->bss == sdata->bss)) continue; max_bw = max(max_bw, ieee80211_get_sta_bw(sta, link_id)); } return max_bw; } static enum nl80211_chan_width ieee80211_get_chanctx_max_required_bw(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, struct ieee80211_link_data *rsvd_for, bool check_reserved) { struct ieee80211_sub_if_data *sdata; struct ieee80211_link_data *link; enum nl80211_chan_width max_bw = NL80211_CHAN_WIDTH_20_NOHT; if (WARN_ON(check_reserved && rsvd_for)) return ctx->conf.def.width; for_each_sdata_link(local, link) { enum nl80211_chan_width width = NL80211_CHAN_WIDTH_20_NOHT; if (check_reserved) { if (link->reserved_chanctx != ctx) continue; } else if (link != rsvd_for && rcu_access_pointer(link->conf->chanctx_conf) != &ctx->conf) continue; switch (link->sdata->vif.type) { case NL80211_IFTYPE_STATION: if (!link->sdata->vif.cfg.assoc) { /* * The AP's sta->bandwidth may not yet be set * at this point (pre-association), so simply * take the width from the chandef. We cannot * have TDLS peers yet (only after association). */ width = link->conf->chanreq.oper.width; break; } /* * otherwise just use min_def like in AP, depending on what * we currently think the AP STA (and possibly TDLS peers) * require(s) */ fallthrough; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: width = ieee80211_get_max_required_bw(link); break; case NL80211_IFTYPE_P2P_DEVICE: case NL80211_IFTYPE_NAN: continue; case NL80211_IFTYPE_MONITOR: WARN_ON_ONCE(!ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)); fallthrough; case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_OCB: width = link->conf->chanreq.oper.width; break; case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_UNSPECIFIED: case NUM_NL80211_IFTYPES: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_P2P_GO: WARN_ON_ONCE(1); } max_bw = max(max_bw, width); } /* use the configured bandwidth in case of monitor interface */ sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (sdata && rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) == &ctx->conf) max_bw = max(max_bw, ctx->conf.def.width); return max_bw; } /* * recalc the min required chan width of the channel context, which is * the max of min required widths of all the interfaces bound to this * channel context. */ static u32 _ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, struct ieee80211_link_data *rsvd_for, bool check_reserved) { enum nl80211_chan_width max_bw; struct cfg80211_chan_def min_def; lockdep_assert_wiphy(local->hw.wiphy); /* don't optimize non-20MHz based and radar_enabled confs */ if (ctx->conf.def.width == NL80211_CHAN_WIDTH_5 || ctx->conf.def.width == NL80211_CHAN_WIDTH_10 || ctx->conf.def.width == NL80211_CHAN_WIDTH_1 || ctx->conf.def.width == NL80211_CHAN_WIDTH_2 || ctx->conf.def.width == NL80211_CHAN_WIDTH_4 || ctx->conf.def.width == NL80211_CHAN_WIDTH_8 || ctx->conf.def.width == NL80211_CHAN_WIDTH_16 || ctx->conf.radar_enabled) { ctx->conf.min_def = ctx->conf.def; return 0; } max_bw = ieee80211_get_chanctx_max_required_bw(local, ctx, rsvd_for, check_reserved); /* downgrade chandef up to max_bw */ min_def = ctx->conf.def; while (min_def.width > max_bw) ieee80211_chandef_downgrade(&min_def, NULL); if (cfg80211_chandef_identical(&ctx->conf.min_def, &min_def)) return 0; ctx->conf.min_def = min_def; if (!ctx->driver_present) return 0; return IEEE80211_CHANCTX_CHANGE_MIN_DEF; } static void ieee80211_chan_bw_change(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, bool reserved, bool narrowed) { struct sta_info *sta; struct ieee80211_supported_band *sband = local->hw.wiphy->bands[ctx->conf.def.chan->band]; rcu_read_lock(); list_for_each_entry_rcu(sta, &local->sta_list, list) { struct ieee80211_sub_if_data *sdata = sta->sdata; enum ieee80211_sta_rx_bandwidth new_sta_bw; unsigned int link_id; if (!ieee80211_sdata_running(sta->sdata)) continue; for (link_id = 0; link_id < ARRAY_SIZE(sta->sdata->link); link_id++) { struct ieee80211_link_data *link = rcu_dereference(sdata->link[link_id]); struct ieee80211_bss_conf *link_conf; struct cfg80211_chan_def *new_chandef; struct link_sta_info *link_sta; if (!link) continue; link_conf = link->conf; if (rcu_access_pointer(link_conf->chanctx_conf) != &ctx->conf) continue; link_sta = rcu_dereference(sta->link[link_id]); if (!link_sta) continue; if (reserved) new_chandef = &link->reserved.oper; else new_chandef = &link_conf->chanreq.oper; new_sta_bw = _ieee80211_sta_cur_vht_bw(link_sta, new_chandef); /* nothing change */ if (new_sta_bw == link_sta->pub->bandwidth) continue; /* vif changed to narrow BW and narrow BW for station wasn't * requested or vice versa */ if ((new_sta_bw < link_sta->pub->bandwidth) == !narrowed) continue; link_sta->pub->bandwidth = new_sta_bw; rate_control_rate_update(local, sband, link_sta, IEEE80211_RC_BW_CHANGED); } } rcu_read_unlock(); } /* * recalc the min required chan width of the channel context, which is * the max of min required widths of all the interfaces bound to this * channel context. */ void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, struct ieee80211_link_data *rsvd_for, bool check_reserved) { u32 changed = _ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for, check_reserved); if (!changed) return; /* check is BW narrowed */ ieee80211_chan_bw_change(local, ctx, false, true); drv_change_chanctx(local, ctx, changed); /* check is BW wider */ ieee80211_chan_bw_change(local, ctx, false, false); } static void _ieee80211_change_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, struct ieee80211_chanctx *old_ctx, const struct ieee80211_chan_req *chanreq, struct ieee80211_link_data *rsvd_for) { const struct cfg80211_chan_def *chandef = &chanreq->oper; struct ieee80211_chan_req ctx_req = { .oper = ctx->conf.def, .ap = ctx->conf.ap, }; u32 changed = 0; /* expected to handle only 20/40/80/160/320 channel widths */ switch (chandef->width) { case NL80211_CHAN_WIDTH_20_NOHT: case NL80211_CHAN_WIDTH_20: case NL80211_CHAN_WIDTH_40: case NL80211_CHAN_WIDTH_80: case NL80211_CHAN_WIDTH_80P80: case NL80211_CHAN_WIDTH_160: case NL80211_CHAN_WIDTH_320: break; default: WARN_ON(1); } /* Check maybe BW narrowed - we do this _before_ calling recalc_chanctx_min_def * due to maybe not returning from it, e.g in case new context was added * first time with all parameters up to date. */ ieee80211_chan_bw_change(local, old_ctx, false, true); if (ieee80211_chanreq_identical(&ctx_req, chanreq)) { ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for, false); return; } WARN_ON(ieee80211_chanctx_refcount(local, ctx) > 1 && !cfg80211_chandef_compatible(&ctx->conf.def, &chanreq->oper)); ieee80211_remove_wbrf(local, &ctx->conf.def); if (!cfg80211_chandef_identical(&ctx->conf.def, &chanreq->oper)) { if (ctx->conf.def.width != chanreq->oper.width) changed |= IEEE80211_CHANCTX_CHANGE_WIDTH; if (ctx->conf.def.punctured != chanreq->oper.punctured) changed |= IEEE80211_CHANCTX_CHANGE_PUNCTURING; } if (!cfg80211_chandef_identical(&ctx->conf.ap, &chanreq->ap)) changed |= IEEE80211_CHANCTX_CHANGE_AP; ctx->conf.def = *chandef; ctx->conf.ap = chanreq->ap; /* check if min chanctx also changed */ changed |= _ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for, false); ieee80211_add_wbrf(local, &ctx->conf.def); drv_change_chanctx(local, ctx, changed); /* check if BW is wider */ ieee80211_chan_bw_change(local, old_ctx, false, false); } static void ieee80211_change_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, struct ieee80211_chanctx *old_ctx, const struct ieee80211_chan_req *chanreq) { _ieee80211_change_chanctx(local, ctx, old_ctx, chanreq, NULL); } /* Note: if successful, the returned chanctx is reserved for the link */ static struct ieee80211_chanctx * ieee80211_find_chanctx(struct ieee80211_local *local, struct ieee80211_link_data *link, const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode) { struct ieee80211_chan_req tmp; struct ieee80211_chanctx *ctx; lockdep_assert_wiphy(local->hw.wiphy); if (mode == IEEE80211_CHANCTX_EXCLUSIVE) return NULL; if (WARN_ON(link->reserved_chanctx)) return NULL; list_for_each_entry(ctx, &local->chanctx_list, list) { const struct ieee80211_chan_req *compat; if (ctx->replace_state != IEEE80211_CHANCTX_REPLACE_NONE) continue; if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) continue; compat = ieee80211_chanctx_compatible(ctx, chanreq, &tmp); if (!compat) continue; compat = ieee80211_chanctx_reserved_chanreq(local, ctx, compat, &tmp); if (!compat) continue; /* * Reserve the chanctx temporarily, as the driver might change * active links during callbacks we make into it below and/or * later during assignment, which could (otherwise) cause the * context to actually be removed. */ link->reserved_chanctx = ctx; list_add(&link->reserved_chanctx_list, &ctx->reserved_links); ieee80211_change_chanctx(local, ctx, ctx, compat); return ctx; } return NULL; } bool ieee80211_is_radar_required(struct ieee80211_local *local, struct cfg80211_scan_request *req) { struct wiphy *wiphy = local->hw.wiphy; struct ieee80211_link_data *link; struct ieee80211_channel *chan; int radio_idx; lockdep_assert_wiphy(local->hw.wiphy); if (!req) return false; for_each_sdata_link(local, link) { if (link->radar_required) { chan = link->conf->chanreq.oper.chan; radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chan); if (ieee80211_is_radio_idx_in_scan_req(wiphy, req, radio_idx)) return true; } } return false; } static bool ieee80211_chanctx_radar_required(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { struct ieee80211_chanctx_conf *conf = &ctx->conf; struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); for_each_sdata_link(local, link) { if (rcu_access_pointer(link->conf->chanctx_conf) != conf) continue; if (!link->radar_required) continue; return true; } return false; } static struct ieee80211_chanctx * ieee80211_alloc_chanctx(struct ieee80211_local *local, const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode, int radio_idx) { struct ieee80211_chanctx *ctx; lockdep_assert_wiphy(local->hw.wiphy); ctx = kzalloc(sizeof(*ctx) + local->hw.chanctx_data_size, GFP_KERNEL); if (!ctx) return NULL; INIT_LIST_HEAD(&ctx->assigned_links); INIT_LIST_HEAD(&ctx->reserved_links); ctx->conf.def = chanreq->oper; ctx->conf.ap = chanreq->ap; ctx->conf.rx_chains_static = 1; ctx->conf.rx_chains_dynamic = 1; ctx->mode = mode; ctx->conf.radar_enabled = false; ctx->conf.radio_idx = radio_idx; ctx->radar_detected = false; _ieee80211_recalc_chanctx_min_def(local, ctx, NULL, false); return ctx; } static int ieee80211_add_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { u32 changed; int err; lockdep_assert_wiphy(local->hw.wiphy); ieee80211_add_wbrf(local, &ctx->conf.def); /* turn idle off *before* setting channel -- some drivers need that */ changed = ieee80211_idle_off(local); if (changed) ieee80211_hw_config(local, -1, changed); err = drv_add_chanctx(local, ctx); if (err) { ieee80211_recalc_idle(local); return err; } return 0; } static struct ieee80211_chanctx * ieee80211_new_chanctx(struct ieee80211_local *local, const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode, bool assign_on_failure, int radio_idx) { struct ieee80211_chanctx *ctx; int err; lockdep_assert_wiphy(local->hw.wiphy); ctx = ieee80211_alloc_chanctx(local, chanreq, mode, radio_idx); if (!ctx) return ERR_PTR(-ENOMEM); err = ieee80211_add_chanctx(local, ctx); if (!assign_on_failure && err) { kfree(ctx); return ERR_PTR(err); } /* We ignored a driver error, see _ieee80211_set_active_links */ WARN_ON_ONCE(err && !local->in_reconfig); list_add_rcu(&ctx->list, &local->chanctx_list); return ctx; } static void ieee80211_del_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, bool skip_idle_recalc) { lockdep_assert_wiphy(local->hw.wiphy); drv_remove_chanctx(local, ctx); if (!skip_idle_recalc) ieee80211_recalc_idle(local); ieee80211_remove_wbrf(local, &ctx->conf.def); } static void ieee80211_free_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, bool skip_idle_recalc) { lockdep_assert_wiphy(local->hw.wiphy); WARN_ON_ONCE(ieee80211_chanctx_refcount(local, ctx) != 0); list_del_rcu(&ctx->list); ieee80211_del_chanctx(local, ctx, skip_idle_recalc); kfree_rcu(ctx, rcu_head); } void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { struct ieee80211_chanctx_conf *conf = &ctx->conf; const struct ieee80211_chan_req *compat = NULL; struct ieee80211_link_data *link; struct ieee80211_chan_req tmp; struct sta_info *sta; lockdep_assert_wiphy(local->hw.wiphy); for_each_sdata_link(local, link) { struct ieee80211_bss_conf *link_conf; if (link->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) continue; link_conf = link->conf; if (rcu_access_pointer(link_conf->chanctx_conf) != conf) continue; if (!compat) compat = &link_conf->chanreq; compat = ieee80211_chanreq_compatible(&link_conf->chanreq, compat, &tmp); if (WARN_ON_ONCE(!compat)) return; } if (WARN_ON_ONCE(!compat)) return; /* TDLS peers can sometimes affect the chandef width */ list_for_each_entry(sta, &local->sta_list, list) { struct ieee80211_sub_if_data *sdata = sta->sdata; struct ieee80211_chan_req tdls_chanreq = {}; int tdls_link_id; if (!sta->uploaded || !test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW) || !test_sta_flag(sta, WLAN_STA_AUTHORIZED) || !sta->tdls_chandef.chan) continue; tdls_link_id = ieee80211_tdls_sta_link_id(sta); link = sdata_dereference(sdata->link[tdls_link_id], sdata); if (!link) continue; if (rcu_access_pointer(link->conf->chanctx_conf) != conf) continue; tdls_chanreq.oper = sta->tdls_chandef; /* note this always fills and returns &tmp if compat */ compat = ieee80211_chanreq_compatible(&tdls_chanreq, compat, &tmp); if (WARN_ON_ONCE(!compat)) return; } ieee80211_change_chanctx(local, ctx, ctx, compat); } static void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *chanctx) { bool radar_enabled; lockdep_assert_wiphy(local->hw.wiphy); radar_enabled = ieee80211_chanctx_radar_required(local, chanctx); if (radar_enabled == chanctx->conf.radar_enabled) return; chanctx->conf.radar_enabled = radar_enabled; drv_change_chanctx(local, chanctx, IEEE80211_CHANCTX_CHANGE_RADAR); } static int ieee80211_assign_link_chanctx(struct ieee80211_link_data *link, struct ieee80211_chanctx *new_ctx, bool assign_on_failure) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *curr_ctx = NULL; bool new_idle; int ret; if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_NAN)) return -EOPNOTSUPP; conf = rcu_dereference_protected(link->conf->chanctx_conf, lockdep_is_held(&local->hw.wiphy->mtx)); if (conf && !local->in_reconfig) { curr_ctx = container_of(conf, struct ieee80211_chanctx, conf); drv_unassign_vif_chanctx(local, sdata, link->conf, curr_ctx); conf = NULL; list_del(&link->assigned_chanctx_list); } if (new_ctx) { /* recalc considering the link we'll use it for now */ ieee80211_recalc_chanctx_min_def(local, new_ctx, link, false); ret = drv_assign_vif_chanctx(local, sdata, link->conf, new_ctx); if (assign_on_failure || !ret) { /* Need to continue, see _ieee80211_set_active_links */ WARN_ON_ONCE(ret && !local->in_reconfig); ret = 0; /* succeeded, so commit it to the data structures */ conf = &new_ctx->conf; if (!local->in_reconfig) list_add(&link->assigned_chanctx_list, &new_ctx->assigned_links); } } else { ret = 0; } rcu_assign_pointer(link->conf->chanctx_conf, conf); if (curr_ctx && ieee80211_chanctx_num_assigned(local, curr_ctx) > 0) { ieee80211_recalc_chanctx_chantype(local, curr_ctx); ieee80211_recalc_smps_chanctx(local, curr_ctx); ieee80211_recalc_radar_chanctx(local, curr_ctx); ieee80211_recalc_chanctx_min_def(local, curr_ctx, NULL, false); } if (new_ctx && ieee80211_chanctx_num_assigned(local, new_ctx) > 0) { ieee80211_recalc_txpower(link, false); ieee80211_recalc_chanctx_min_def(local, new_ctx, NULL, false); } if (conf) { new_idle = false; } else { struct ieee80211_link_data *tmp; new_idle = true; for_each_sdata_link(local, tmp) { if (rcu_access_pointer(tmp->conf->chanctx_conf)) { new_idle = false; break; } } } if (new_idle != sdata->vif.cfg.idle) { sdata->vif.cfg.idle = new_idle; if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && sdata->vif.type != NL80211_IFTYPE_MONITOR) ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_IDLE); } ieee80211_check_fast_xmit_iface(sdata); return ret; } void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *chanctx) { struct ieee80211_sub_if_data *sdata; u8 rx_chains_static, rx_chains_dynamic; struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); rx_chains_static = 1; rx_chains_dynamic = 1; for_each_sdata_link(local, link) { u8 needed_static, needed_dynamic; switch (link->sdata->vif.type) { case NL80211_IFTYPE_STATION: if (!link->sdata->u.mgd.associated) continue; break; case NL80211_IFTYPE_MONITOR: if (!ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) continue; break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_OCB: break; default: continue; } if (rcu_access_pointer(link->conf->chanctx_conf) != &chanctx->conf) continue; if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR) { rx_chains_dynamic = rx_chains_static = local->rx_chains; break; } switch (link->smps_mode) { default: WARN_ONCE(1, "Invalid SMPS mode %d\n", link->smps_mode); fallthrough; case IEEE80211_SMPS_OFF: needed_static = link->needed_rx_chains; needed_dynamic = link->needed_rx_chains; break; case IEEE80211_SMPS_DYNAMIC: needed_static = 1; needed_dynamic = link->needed_rx_chains; break; case IEEE80211_SMPS_STATIC: needed_static = 1; needed_dynamic = 1; break; } rx_chains_static = max(rx_chains_static, needed_static); rx_chains_dynamic = max(rx_chains_dynamic, needed_dynamic); } /* Disable SMPS for the monitor interface */ sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (sdata && rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) == &chanctx->conf) rx_chains_dynamic = rx_chains_static = local->rx_chains; if (rx_chains_static == chanctx->conf.rx_chains_static && rx_chains_dynamic == chanctx->conf.rx_chains_dynamic) return; chanctx->conf.rx_chains_static = rx_chains_static; chanctx->conf.rx_chains_dynamic = rx_chains_dynamic; drv_change_chanctx(local, chanctx, IEEE80211_CHANCTX_CHANGE_RX_CHAINS); } static void __ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, bool clear) { struct ieee80211_sub_if_data *sdata = link->sdata; unsigned int link_id = link->link_id; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_local *local __maybe_unused = sdata->local; struct ieee80211_sub_if_data *vlan; struct ieee80211_chanctx_conf *conf; if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_AP)) return; lockdep_assert_wiphy(local->hw.wiphy); /* Check that conf exists, even when clearing this function * must be called with the AP's channel context still there * as it would otherwise cause VLANs to have an invalid * channel context pointer for a while, possibly pointing * to a channel context that has already been freed. */ conf = rcu_dereference_protected(link_conf->chanctx_conf, lockdep_is_held(&local->hw.wiphy->mtx)); WARN_ON(!conf); if (clear) conf = NULL; list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { struct ieee80211_bss_conf *vlan_conf; vlan_conf = wiphy_dereference(local->hw.wiphy, vlan->vif.link_conf[link_id]); if (WARN_ON(!vlan_conf)) continue; rcu_assign_pointer(vlan_conf->chanctx_conf, conf); } } void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, bool clear) { struct ieee80211_local *local = link->sdata->local; lockdep_assert_wiphy(local->hw.wiphy); __ieee80211_link_copy_chanctx_to_vlans(link, clear); } void ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_chanctx *ctx = link->reserved_chanctx; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (WARN_ON(!ctx)) return; list_del(&link->reserved_chanctx_list); link->reserved_chanctx = NULL; if (ieee80211_chanctx_refcount(sdata->local, ctx) == 0) { if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) { if (WARN_ON(!ctx->replace_ctx)) return; WARN_ON(ctx->replace_ctx->replace_state != IEEE80211_CHANCTX_WILL_BE_REPLACED); WARN_ON(ctx->replace_ctx->replace_ctx != ctx); ctx->replace_ctx->replace_ctx = NULL; ctx->replace_ctx->replace_state = IEEE80211_CHANCTX_REPLACE_NONE; list_del_rcu(&ctx->list); kfree_rcu(ctx, rcu_head); } else { ieee80211_free_chanctx(sdata->local, ctx, false); } } } static struct ieee80211_chanctx * ieee80211_replace_chanctx(struct ieee80211_local *local, const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode, struct ieee80211_chanctx *curr_ctx) { struct ieee80211_chanctx *new_ctx, *ctx; struct wiphy *wiphy = local->hw.wiphy; const struct wiphy_radio *radio; if (!curr_ctx || (curr_ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) || !list_empty(&curr_ctx->reserved_links)) { /* * Another link already requested this context for a * reservation. Find another one hoping all links assigned * to it will also switch soon enough. * * TODO: This needs a little more work as some cases * (more than 2 chanctx capable devices) may fail which could * otherwise succeed provided some channel context juggling was * performed. * * Consider ctx1..3, link1..6, each ctx has 2 links. link1 and * link2 from ctx1 request new different chandefs starting 2 * in-place reservations with ctx4 and ctx5 replacing ctx1 and * ctx2 respectively. Next link5 and link6 from ctx3 reserve * ctx4. If link3 and link4 remain on ctx2 as they are then this * fails unless `replace_ctx` from ctx5 is replaced with ctx3. */ list_for_each_entry(ctx, &local->chanctx_list, list) { if (ctx->replace_state != IEEE80211_CHANCTX_REPLACE_NONE) continue; if (!list_empty(&ctx->reserved_links)) continue; if (ctx->conf.radio_idx >= 0) { radio = &wiphy->radio[ctx->conf.radio_idx]; if (!cfg80211_radio_chandef_valid(radio, &chanreq->oper)) continue; } curr_ctx = ctx; break; } } /* * If that's true then all available contexts already have reservations * and cannot be used. */ if (!curr_ctx || (curr_ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) || !list_empty(&curr_ctx->reserved_links)) return ERR_PTR(-EBUSY); new_ctx = ieee80211_alloc_chanctx(local, chanreq, mode, -1); if (!new_ctx) return ERR_PTR(-ENOMEM); new_ctx->replace_ctx = curr_ctx; new_ctx->replace_state = IEEE80211_CHANCTX_REPLACES_OTHER; curr_ctx->replace_ctx = new_ctx; curr_ctx->replace_state = IEEE80211_CHANCTX_WILL_BE_REPLACED; list_add_rcu(&new_ctx->list, &local->chanctx_list); return new_ctx; } static bool ieee80211_find_available_radio(struct ieee80211_local *local, const struct ieee80211_chan_req *chanreq, u32 radio_mask, int *radio_idx) { struct wiphy *wiphy = local->hw.wiphy; const struct wiphy_radio *radio; int i; *radio_idx = -1; if (!wiphy->n_radio) return true; for (i = 0; i < wiphy->n_radio; i++) { if (!(radio_mask & BIT(i))) continue; radio = &wiphy->radio[i]; if (!cfg80211_radio_chandef_valid(radio, &chanreq->oper)) continue; if (!ieee80211_can_create_new_chanctx(local, i)) continue; *radio_idx = i; return true; } return false; } int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode, bool radar_required) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx *new_ctx, *curr_ctx; int radio_idx; lockdep_assert_wiphy(local->hw.wiphy); curr_ctx = ieee80211_link_get_chanctx(link); if (curr_ctx && !local->ops->switch_vif_chanctx) return -EOPNOTSUPP; new_ctx = ieee80211_find_reservation_chanctx(local, chanreq, mode); if (!new_ctx) { if (ieee80211_can_create_new_chanctx(local, -1) && ieee80211_find_available_radio(local, chanreq, sdata->wdev.radio_mask, &radio_idx)) new_ctx = ieee80211_new_chanctx(local, chanreq, mode, false, radio_idx); else new_ctx = ieee80211_replace_chanctx(local, chanreq, mode, curr_ctx); if (IS_ERR(new_ctx)) return PTR_ERR(new_ctx); } list_add(&link->reserved_chanctx_list, &new_ctx->reserved_links); link->reserved_chanctx = new_ctx; link->reserved = *chanreq; link->reserved_radar_required = radar_required; link->reserved_ready = false; return 0; } static void ieee80211_link_chanctx_reservation_complete(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; switch (sdata->vif.type) { case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_AP: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_OCB: wiphy_work_queue(sdata->local->hw.wiphy, &link->csa.finalize_work); break; case NL80211_IFTYPE_STATION: wiphy_delayed_work_queue(sdata->local->hw.wiphy, &link->u.mgd.csa.switch_work, 0); break; case NL80211_IFTYPE_UNSPECIFIED: case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_P2P_DEVICE: case NL80211_IFTYPE_NAN: case NUM_NL80211_IFTYPES: WARN_ON(1); break; } } static void ieee80211_link_update_chanreq(struct ieee80211_link_data *link, const struct ieee80211_chan_req *chanreq) { struct ieee80211_sub_if_data *sdata = link->sdata; unsigned int link_id = link->link_id; struct ieee80211_sub_if_data *vlan; link->conf->chanreq = *chanreq; if (sdata->vif.type != NL80211_IFTYPE_AP) return; list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { struct ieee80211_bss_conf *vlan_conf; vlan_conf = wiphy_dereference(sdata->local->hw.wiphy, vlan->vif.link_conf[link_id]); if (WARN_ON(!vlan_conf)) continue; vlan_conf->chanreq = *chanreq; } } static int ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_local *local = sdata->local; struct ieee80211_vif_chanctx_switch vif_chsw[1] = {}; struct ieee80211_chanctx *old_ctx, *new_ctx; const struct ieee80211_chan_req *chanreq; struct ieee80211_chan_req tmp; u64 changed = 0; int err; lockdep_assert_wiphy(local->hw.wiphy); new_ctx = link->reserved_chanctx; old_ctx = ieee80211_link_get_chanctx(link); if (WARN_ON(!link->reserved_ready)) return -EBUSY; if (WARN_ON(!new_ctx)) return -EINVAL; if (WARN_ON(!old_ctx)) return -EINVAL; if (WARN_ON(new_ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)) return -EINVAL; chanreq = ieee80211_chanctx_non_reserved_chandef(local, new_ctx, &link->reserved, &tmp); if (WARN_ON(!chanreq)) return -EINVAL; if (link_conf->chanreq.oper.width != link->reserved.oper.width) changed = BSS_CHANGED_BANDWIDTH; ieee80211_link_update_chanreq(link, &link->reserved); _ieee80211_change_chanctx(local, new_ctx, old_ctx, chanreq, link); vif_chsw[0].vif = &sdata->vif; vif_chsw[0].old_ctx = &old_ctx->conf; vif_chsw[0].new_ctx = &new_ctx->conf; vif_chsw[0].link_conf = link->conf; list_del(&link->reserved_chanctx_list); link->reserved_chanctx = NULL; err = drv_switch_vif_chanctx(local, vif_chsw, 1, CHANCTX_SWMODE_REASSIGN_VIF); if (err) { if (ieee80211_chanctx_refcount(local, new_ctx) == 0) ieee80211_free_chanctx(local, new_ctx, false); goto out; } link->radar_required = link->reserved_radar_required; list_move(&link->assigned_chanctx_list, &new_ctx->assigned_links); rcu_assign_pointer(link_conf->chanctx_conf, &new_ctx->conf); if (sdata->vif.type == NL80211_IFTYPE_AP) __ieee80211_link_copy_chanctx_to_vlans(link, false); ieee80211_check_fast_xmit_iface(sdata); if (ieee80211_chanctx_refcount(local, old_ctx) == 0) ieee80211_free_chanctx(local, old_ctx, false); ieee80211_recalc_chanctx_min_def(local, new_ctx, NULL, false); ieee80211_recalc_smps_chanctx(local, new_ctx); ieee80211_recalc_radar_chanctx(local, new_ctx); if (changed) ieee80211_link_info_change_notify(sdata, link, changed); out: ieee80211_link_chanctx_reservation_complete(link); return err; } static int ieee80211_link_use_reserved_assign(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx *old_ctx, *new_ctx; const struct ieee80211_chan_req *chanreq; struct ieee80211_chan_req tmp; int err; old_ctx = ieee80211_link_get_chanctx(link); new_ctx = link->reserved_chanctx; if (WARN_ON(!link->reserved_ready)) return -EINVAL; if (WARN_ON(old_ctx)) return -EINVAL; if (WARN_ON(!new_ctx)) return -EINVAL; if (WARN_ON(new_ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)) return -EINVAL; chanreq = ieee80211_chanctx_non_reserved_chandef(local, new_ctx, &link->reserved, &tmp); if (WARN_ON(!chanreq)) return -EINVAL; ieee80211_change_chanctx(local, new_ctx, new_ctx, chanreq); list_del(&link->reserved_chanctx_list); link->reserved_chanctx = NULL; err = ieee80211_assign_link_chanctx(link, new_ctx, false); if (err) { if (ieee80211_chanctx_refcount(local, new_ctx) == 0) ieee80211_free_chanctx(local, new_ctx, false); goto out; } out: ieee80211_link_chanctx_reservation_complete(link); return err; } static bool ieee80211_link_has_in_place_reservation(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_chanctx *old_ctx, *new_ctx; lockdep_assert_wiphy(sdata->local->hw.wiphy); new_ctx = link->reserved_chanctx; old_ctx = ieee80211_link_get_chanctx(link); if (!old_ctx) return false; if (WARN_ON(!new_ctx)) return false; if (old_ctx->replace_state != IEEE80211_CHANCTX_WILL_BE_REPLACED) return false; if (new_ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) return false; return true; } static int ieee80211_chsw_switch_vifs(struct ieee80211_local *local, int n_vifs) { struct ieee80211_vif_chanctx_switch *vif_chsw; struct ieee80211_link_data *link; struct ieee80211_chanctx *ctx, *old_ctx; int i, err; lockdep_assert_wiphy(local->hw.wiphy); vif_chsw = kcalloc(n_vifs, sizeof(vif_chsw[0]), GFP_KERNEL); if (!vif_chsw) return -ENOMEM; i = 0; list_for_each_entry(ctx, &local->chanctx_list, list) { if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) continue; if (WARN_ON(!ctx->replace_ctx)) { err = -EINVAL; goto out; } list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) { if (!ieee80211_link_has_in_place_reservation(link)) continue; old_ctx = ieee80211_link_get_chanctx(link); vif_chsw[i].vif = &link->sdata->vif; vif_chsw[i].old_ctx = &old_ctx->conf; vif_chsw[i].new_ctx = &ctx->conf; vif_chsw[i].link_conf = link->conf; i++; } } err = drv_switch_vif_chanctx(local, vif_chsw, n_vifs, CHANCTX_SWMODE_SWAP_CONTEXTS); out: kfree(vif_chsw); return err; } static int ieee80211_chsw_switch_ctxs(struct ieee80211_local *local) { struct ieee80211_chanctx *ctx; int err; lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(ctx, &local->chanctx_list, list) { if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) continue; if (!list_empty(&ctx->replace_ctx->assigned_links)) continue; ieee80211_del_chanctx(local, ctx->replace_ctx, false); err = ieee80211_add_chanctx(local, ctx); if (err) goto err; } return 0; err: WARN_ON(ieee80211_add_chanctx(local, ctx)); list_for_each_entry_continue_reverse(ctx, &local->chanctx_list, list) { if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) continue; if (!list_empty(&ctx->replace_ctx->assigned_links)) continue; ieee80211_del_chanctx(local, ctx, false); WARN_ON(ieee80211_add_chanctx(local, ctx->replace_ctx)); } return err; } static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local) { struct ieee80211_chanctx *ctx, *ctx_tmp, *old_ctx; int err, n_assigned, n_reserved, n_ready; int n_ctx = 0, n_vifs_switch = 0, n_vifs_assign = 0, n_vifs_ctxless = 0; lockdep_assert_wiphy(local->hw.wiphy); /* * If there are 2 independent pairs of channel contexts performing * cross-switch of their vifs this code will still wait until both are * ready even though it could be possible to switch one before the * other is ready. * * For practical reasons and code simplicity just do a single huge * switch. */ /* * Verify if the reservation is still feasible. * - if it's not then disconnect * - if it is but not all vifs necessary are ready then defer */ list_for_each_entry(ctx, &local->chanctx_list, list) { struct ieee80211_link_data *link; if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) continue; if (WARN_ON(!ctx->replace_ctx)) { err = -EINVAL; goto err; } n_ctx++; n_assigned = 0; n_reserved = 0; n_ready = 0; list_for_each_entry(link, &ctx->replace_ctx->assigned_links, assigned_chanctx_list) { n_assigned++; if (link->reserved_chanctx) { n_reserved++; if (link->reserved_ready) n_ready++; } } if (n_assigned != n_reserved) { if (n_ready == n_reserved) { wiphy_info(local->hw.wiphy, "channel context reservation cannot be finalized because some interfaces aren't switching\n"); err = -EBUSY; goto err; } return -EAGAIN; } ctx->conf.radar_enabled = false; list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) { if (ieee80211_link_has_in_place_reservation(link) && !link->reserved_ready) return -EAGAIN; old_ctx = ieee80211_link_get_chanctx(link); if (old_ctx) { if (old_ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) n_vifs_switch++; else n_vifs_assign++; } else { n_vifs_ctxless++; } if (link->reserved_radar_required) ctx->conf.radar_enabled = true; } } if (WARN_ON(n_ctx == 0) || WARN_ON(n_vifs_switch == 0 && n_vifs_assign == 0 && n_vifs_ctxless == 0)) { err = -EINVAL; goto err; } /* update station rate control and min width before switch */ list_for_each_entry(ctx, &local->chanctx_list, list) { struct ieee80211_link_data *link; if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) continue; if (WARN_ON(!ctx->replace_ctx)) { err = -EINVAL; goto err; } list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) { if (!ieee80211_link_has_in_place_reservation(link)) continue; ieee80211_chan_bw_change(local, ieee80211_link_get_chanctx(link), true, true); } ieee80211_recalc_chanctx_min_def(local, ctx, NULL, true); } /* * All necessary vifs are ready. Perform the switch now depending on * reservations and driver capabilities. */ if (n_vifs_switch > 0) { err = ieee80211_chsw_switch_vifs(local, n_vifs_switch); if (err) goto err; } if (n_vifs_assign > 0 || n_vifs_ctxless > 0) { err = ieee80211_chsw_switch_ctxs(local); if (err) goto err; } /* * Update all structures, values and pointers to point to new channel * context(s). */ list_for_each_entry(ctx, &local->chanctx_list, list) { struct ieee80211_link_data *link, *link_tmp; if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) continue; if (WARN_ON(!ctx->replace_ctx)) { err = -EINVAL; goto err; } list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_bss_conf *link_conf = link->conf; u64 changed = 0; if (!ieee80211_link_has_in_place_reservation(link)) continue; rcu_assign_pointer(link_conf->chanctx_conf, &ctx->conf); if (sdata->vif.type == NL80211_IFTYPE_AP) __ieee80211_link_copy_chanctx_to_vlans(link, false); ieee80211_check_fast_xmit_iface(sdata); link->radar_required = link->reserved_radar_required; if (link_conf->chanreq.oper.width != link->reserved.oper.width) changed = BSS_CHANGED_BANDWIDTH; ieee80211_link_update_chanreq(link, &link->reserved); if (changed) ieee80211_link_info_change_notify(sdata, link, changed); ieee80211_recalc_txpower(link, false); } ieee80211_recalc_chanctx_chantype(local, ctx); ieee80211_recalc_smps_chanctx(local, ctx); ieee80211_recalc_radar_chanctx(local, ctx); ieee80211_recalc_chanctx_min_def(local, ctx, NULL, false); list_for_each_entry_safe(link, link_tmp, &ctx->reserved_links, reserved_chanctx_list) { if (ieee80211_link_get_chanctx(link) != ctx) continue; list_del(&link->reserved_chanctx_list); list_move(&link->assigned_chanctx_list, &ctx->assigned_links); link->reserved_chanctx = NULL; ieee80211_link_chanctx_reservation_complete(link); ieee80211_chan_bw_change(local, ctx, false, false); } /* * This context might have been a dependency for an already * ready re-assign reservation interface that was deferred. Do * not propagate error to the caller though. The in-place * reservation for originally requested interface has already * succeeded at this point. */ list_for_each_entry_safe(link, link_tmp, &ctx->reserved_links, reserved_chanctx_list) { if (WARN_ON(ieee80211_link_has_in_place_reservation(link))) continue; if (WARN_ON(link->reserved_chanctx != ctx)) continue; if (!link->reserved_ready) continue; if (ieee80211_link_get_chanctx(link)) err = ieee80211_link_use_reserved_reassign(link); else err = ieee80211_link_use_reserved_assign(link); if (err) { link_info(link, "failed to finalize (re-)assign reservation (err=%d)\n", err); ieee80211_link_unreserve_chanctx(link); cfg80211_stop_iface(local->hw.wiphy, &link->sdata->wdev, GFP_KERNEL); } } } /* * Finally free old contexts */ list_for_each_entry_safe(ctx, ctx_tmp, &local->chanctx_list, list) { if (ctx->replace_state != IEEE80211_CHANCTX_WILL_BE_REPLACED) continue; ctx->replace_ctx->replace_ctx = NULL; ctx->replace_ctx->replace_state = IEEE80211_CHANCTX_REPLACE_NONE; list_del_rcu(&ctx->list); kfree_rcu(ctx, rcu_head); } return 0; err: list_for_each_entry(ctx, &local->chanctx_list, list) { struct ieee80211_link_data *link, *link_tmp; if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) continue; list_for_each_entry_safe(link, link_tmp, &ctx->reserved_links, reserved_chanctx_list) { ieee80211_link_unreserve_chanctx(link); ieee80211_link_chanctx_reservation_complete(link); } } return err; } void __ieee80211_link_release_channel(struct ieee80211_link_data *link, bool skip_idle_recalc) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *ctx; bool use_reserved_switch = false; lockdep_assert_wiphy(local->hw.wiphy); conf = rcu_dereference_protected(link_conf->chanctx_conf, lockdep_is_held(&local->hw.wiphy->mtx)); if (!conf) return; ctx = container_of(conf, struct ieee80211_chanctx, conf); if (link->reserved_chanctx) { if (link->reserved_chanctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && ieee80211_chanctx_num_reserved(local, link->reserved_chanctx) > 1) use_reserved_switch = true; ieee80211_link_unreserve_chanctx(link); } ieee80211_assign_link_chanctx(link, NULL, false); if (ieee80211_chanctx_refcount(local, ctx) == 0) ieee80211_free_chanctx(local, ctx, skip_idle_recalc); link->radar_required = false; /* Unreserving may ready an in-place reservation. */ if (use_reserved_switch) ieee80211_vif_use_reserved_switch(local); } int _ieee80211_link_use_channel(struct ieee80211_link_data *link, const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode, bool assign_on_failure) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx *ctx; u8 radar_detect_width = 0; bool reserved = false; int radio_idx; int ret; lockdep_assert_wiphy(local->hw.wiphy); if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) { ieee80211_link_update_chanreq(link, chanreq); return 0; } ret = cfg80211_chandef_dfs_required(local->hw.wiphy, &chanreq->oper, sdata->wdev.iftype); if (ret < 0) goto out; if (ret > 0) radar_detect_width = BIT(chanreq->oper.width); link->radar_required = ret; ret = ieee80211_check_combinations(sdata, &chanreq->oper, mode, radar_detect_width, -1); if (ret < 0) goto out; if (!local->in_reconfig) __ieee80211_link_release_channel(link, false); ctx = ieee80211_find_chanctx(local, link, chanreq, mode); /* Note: context is now reserved */ if (ctx) reserved = true; else if (!ieee80211_find_available_radio(local, chanreq, sdata->wdev.radio_mask, &radio_idx)) ctx = ERR_PTR(-EBUSY); else ctx = ieee80211_new_chanctx(local, chanreq, mode, assign_on_failure, radio_idx); if (IS_ERR(ctx)) { ret = PTR_ERR(ctx); goto out; } ieee80211_link_update_chanreq(link, chanreq); ret = ieee80211_assign_link_chanctx(link, ctx, assign_on_failure); if (reserved) { /* remove reservation */ WARN_ON(link->reserved_chanctx != ctx); link->reserved_chanctx = NULL; list_del(&link->reserved_chanctx_list); } if (ret) { /* if assign fails refcount stays the same */ if (ieee80211_chanctx_refcount(local, ctx) == 0) ieee80211_free_chanctx(local, ctx, false); goto out; } ieee80211_recalc_smps_chanctx(local, ctx); ieee80211_recalc_radar_chanctx(local, ctx); out: if (ret) link->radar_required = false; return ret; } int ieee80211_link_use_reserved_context(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx *new_ctx; struct ieee80211_chanctx *old_ctx; int err; lockdep_assert_wiphy(local->hw.wiphy); new_ctx = link->reserved_chanctx; old_ctx = ieee80211_link_get_chanctx(link); if (WARN_ON(!new_ctx)) return -EINVAL; if (WARN_ON(new_ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) return -EINVAL; if (WARN_ON(link->reserved_ready)) return -EINVAL; link->reserved_ready = true; if (new_ctx->replace_state == IEEE80211_CHANCTX_REPLACE_NONE) { if (old_ctx) return ieee80211_link_use_reserved_reassign(link); return ieee80211_link_use_reserved_assign(link); } /* * In-place reservation may need to be finalized now either if: * a) sdata is taking part in the swapping itself and is the last one * b) sdata has switched with a re-assign reservation to an existing * context readying in-place switching of old_ctx * * In case of (b) do not propagate the error up because the requested * sdata already switched successfully. Just spill an extra warning. * The ieee80211_vif_use_reserved_switch() already stops all necessary * interfaces upon failure. */ if ((old_ctx && old_ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) || new_ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) { err = ieee80211_vif_use_reserved_switch(local); if (err && err != -EAGAIN) { if (new_ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) return err; wiphy_info(local->hw.wiphy, "depending in-place reservation failed (err=%d)\n", err); } } return 0; } /* * This is similar to ieee80211_chanctx_compatible(), but rechecks * against all the links actually using it (except the one that's * passed, since that one is changing). * This is done in order to allow changes to the AP's bandwidth for * wider bandwidth OFDMA purposes, which wouldn't be treated as * compatible by ieee80211_chanctx_recheck() but is OK if the link * requesting the update is the only one using it. */ static const struct ieee80211_chan_req * ieee80211_chanctx_recheck(struct ieee80211_local *local, struct ieee80211_link_data *skip_link, struct ieee80211_chanctx *ctx, const struct ieee80211_chan_req *req, struct ieee80211_chan_req *tmp) { const struct ieee80211_chan_req *ret = req; struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); for_each_sdata_link(local, link) { if (link == skip_link) continue; if (rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) { ret = ieee80211_chanreq_compatible(ret, &link->conf->chanreq, tmp); if (!ret) return NULL; } if (link->reserved_chanctx == ctx) { ret = ieee80211_chanreq_compatible(ret, &link->reserved, tmp); if (!ret) return NULL; } } *tmp = *ret; return tmp; } int ieee80211_link_change_chanreq(struct ieee80211_link_data *link, const struct ieee80211_chan_req *chanreq, u64 *changed) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *ctx; const struct ieee80211_chan_req *compat; struct ieee80211_chan_req tmp; lockdep_assert_wiphy(local->hw.wiphy); if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, &chanreq->oper, IEEE80211_CHAN_DISABLED)) return -EINVAL; /* for non-HT 20 MHz the rest doesn't matter */ if (chanreq->oper.width == NL80211_CHAN_WIDTH_20_NOHT && cfg80211_chandef_identical(&chanreq->oper, &link_conf->chanreq.oper)) return 0; /* but you cannot switch to/from it */ if (chanreq->oper.width == NL80211_CHAN_WIDTH_20_NOHT || link_conf->chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT) return -EINVAL; conf = rcu_dereference_protected(link_conf->chanctx_conf, lockdep_is_held(&local->hw.wiphy->mtx)); if (!conf) return -EINVAL; ctx = container_of(conf, struct ieee80211_chanctx, conf); compat = ieee80211_chanctx_recheck(local, link, ctx, chanreq, &tmp); if (!compat) return -EINVAL; switch (ctx->replace_state) { case IEEE80211_CHANCTX_REPLACE_NONE: if (!ieee80211_chanctx_reserved_chanreq(local, ctx, compat, &tmp)) return -EBUSY; break; case IEEE80211_CHANCTX_WILL_BE_REPLACED: /* TODO: Perhaps the bandwidth change could be treated as a * reservation itself? */ return -EBUSY; case IEEE80211_CHANCTX_REPLACES_OTHER: /* channel context that is going to replace another channel * context doesn't really exist and shouldn't be assigned * anywhere yet */ WARN_ON(1); break; } ieee80211_link_update_chanreq(link, chanreq); ieee80211_recalc_chanctx_chantype(local, ctx); *changed |= BSS_CHANGED_BANDWIDTH; return 0; } void ieee80211_link_release_channel(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) return; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (rcu_access_pointer(link->conf->chanctx_conf)) __ieee80211_link_release_channel(link, false); } void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; unsigned int link_id = link->link_id; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_bss_conf *ap_conf; struct ieee80211_local *local = sdata->local; struct ieee80211_sub_if_data *ap; struct ieee80211_chanctx_conf *conf; lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_AP_VLAN || !sdata->bss)) return; ap = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); ap_conf = wiphy_dereference(local->hw.wiphy, ap->vif.link_conf[link_id]); conf = wiphy_dereference(local->hw.wiphy, ap_conf->chanctx_conf); rcu_assign_pointer(link_conf->chanctx_conf, conf); } void ieee80211_iter_chan_contexts_atomic( struct ieee80211_hw *hw, void (*iter)(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *chanctx_conf, void *data), void *iter_data) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_chanctx *ctx; rcu_read_lock(); list_for_each_entry_rcu(ctx, &local->chanctx_list, list) if (ctx->driver_present) iter(hw, &ctx->conf, iter_data); rcu_read_unlock(); } EXPORT_SYMBOL_GPL(ieee80211_iter_chan_contexts_atomic); void ieee80211_iter_chan_contexts_mtx( struct ieee80211_hw *hw, void (*iter)(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *chanctx_conf, void *data), void *iter_data) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_chanctx *ctx; lockdep_assert_wiphy(hw->wiphy); list_for_each_entry(ctx, &local->chanctx_list, list) if (ctx->driver_present) iter(hw, &ctx->conf, iter_data); } EXPORT_SYMBOL_GPL(ieee80211_iter_chan_contexts_mtx); |
| 72 73 73 73 72 73 73 142 142 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 | // SPDX-License-Identifier: GPL-2.0-only /* * async.c: Asynchronous function calls for boot performance * * (C) Copyright 2009 Intel Corporation * Author: Arjan van de Ven <arjan@linux.intel.com> */ /* Goals and Theory of Operation The primary goal of this feature is to reduce the kernel boot time, by doing various independent hardware delays and discovery operations decoupled and not strictly serialized. More specifically, the asynchronous function call concept allows certain operations (primarily during system boot) to happen asynchronously, out of order, while these operations still have their externally visible parts happen sequentially and in-order. (not unlike how out-of-order CPUs retire their instructions in order) Key to the asynchronous function call implementation is the concept of a "sequence cookie" (which, although it has an abstracted type, can be thought of as a monotonically incrementing number). The async core will assign each scheduled event such a sequence cookie and pass this to the called functions. The asynchronously called function should before doing a globally visible operation, such as registering device numbers, call the async_synchronize_cookie() function and pass in its own cookie. The async_synchronize_cookie() function will make sure that all asynchronous operations that were scheduled prior to the operation corresponding with the cookie have completed. Subsystem/driver initialization code that scheduled asynchronous probe functions, but which shares global resources with other drivers/subsystems that do not use the asynchronous call feature, need to do a full synchronization with the async_synchronize_full() function, before returning from their init function. This is to maintain strict ordering between the asynchronous and synchronous parts of the kernel. */ #include <linux/async.h> #include <linux/atomic.h> #include <linux/export.h> #include <linux/ktime.h> #include <linux/pid.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/wait.h> #include <linux/workqueue.h> #include "workqueue_internal.h" static async_cookie_t next_cookie = 1; #define MAX_WORK 32768 #define ASYNC_COOKIE_MAX ULLONG_MAX /* infinity cookie */ static LIST_HEAD(async_global_pending); /* pending from all registered doms */ static ASYNC_DOMAIN(async_dfl_domain); static DEFINE_SPINLOCK(async_lock); static struct workqueue_struct *async_wq; struct async_entry { struct list_head domain_list; struct list_head global_list; struct work_struct work; async_cookie_t cookie; async_func_t func; void *data; struct async_domain *domain; }; static DECLARE_WAIT_QUEUE_HEAD(async_done); static atomic_t entry_count; static long long microseconds_since(ktime_t start) { ktime_t now = ktime_get(); return ktime_to_ns(ktime_sub(now, start)) >> 10; } static async_cookie_t lowest_in_progress(struct async_domain *domain) { struct async_entry *first = NULL; async_cookie_t ret = ASYNC_COOKIE_MAX; unsigned long flags; spin_lock_irqsave(&async_lock, flags); if (domain) { if (!list_empty(&domain->pending)) first = list_first_entry(&domain->pending, struct async_entry, domain_list); } else { if (!list_empty(&async_global_pending)) first = list_first_entry(&async_global_pending, struct async_entry, global_list); } if (first) ret = first->cookie; spin_unlock_irqrestore(&async_lock, flags); return ret; } /* * pick the first pending entry and run it */ static void async_run_entry_fn(struct work_struct *work) { struct async_entry *entry = container_of(work, struct async_entry, work); unsigned long flags; ktime_t calltime; /* 1) run (and print duration) */ pr_debug("calling %lli_%pS @ %i\n", (long long)entry->cookie, entry->func, task_pid_nr(current)); calltime = ktime_get(); entry->func(entry->data, entry->cookie); pr_debug("initcall %lli_%pS returned after %lld usecs\n", (long long)entry->cookie, entry->func, microseconds_since(calltime)); /* 2) remove self from the pending queues */ spin_lock_irqsave(&async_lock, flags); list_del_init(&entry->domain_list); list_del_init(&entry->global_list); /* 3) free the entry */ kfree(entry); atomic_dec(&entry_count); spin_unlock_irqrestore(&async_lock, flags); /* 4) wake up any waiters */ wake_up(&async_done); } static async_cookie_t __async_schedule_node_domain(async_func_t func, void *data, int node, struct async_domain *domain, struct async_entry *entry) { async_cookie_t newcookie; unsigned long flags; INIT_LIST_HEAD(&entry->domain_list); INIT_LIST_HEAD(&entry->global_list); INIT_WORK(&entry->work, async_run_entry_fn); entry->func = func; entry->data = data; entry->domain = domain; spin_lock_irqsave(&async_lock, flags); /* allocate cookie and queue */ newcookie = entry->cookie = next_cookie++; list_add_tail(&entry->domain_list, &domain->pending); if (domain->registered) list_add_tail(&entry->global_list, &async_global_pending); atomic_inc(&entry_count); spin_unlock_irqrestore(&async_lock, flags); /* schedule for execution */ queue_work_node(node, async_wq, &entry->work); return newcookie; } /** * async_schedule_node_domain - NUMA specific version of async_schedule_domain * @func: function to execute asynchronously * @data: data pointer to pass to the function * @node: NUMA node that we want to schedule this on or close to * @domain: the domain * * Returns an async_cookie_t that may be used for checkpointing later. * @domain may be used in the async_synchronize_*_domain() functions to * wait within a certain synchronization domain rather than globally. * * Note: This function may be called from atomic or non-atomic contexts. * * The node requested will be honored on a best effort basis. If the node * has no CPUs associated with it then the work is distributed among all * available CPUs. */ async_cookie_t async_schedule_node_domain(async_func_t func, void *data, int node, struct async_domain *domain) { struct async_entry *entry; unsigned long flags; async_cookie_t newcookie; /* allow irq-off callers */ entry = kzalloc(sizeof(struct async_entry), GFP_ATOMIC); /* * If we're out of memory or if there's too much work * pending already, we execute synchronously. */ if (!entry || atomic_read(&entry_count) > MAX_WORK) { kfree(entry); spin_lock_irqsave(&async_lock, flags); newcookie = next_cookie++; spin_unlock_irqrestore(&async_lock, flags); /* low on memory.. run synchronously */ func(data, newcookie); return newcookie; } return __async_schedule_node_domain(func, data, node, domain, entry); } EXPORT_SYMBOL_GPL(async_schedule_node_domain); /** * async_schedule_node - NUMA specific version of async_schedule * @func: function to execute asynchronously * @data: data pointer to pass to the function * @node: NUMA node that we want to schedule this on or close to * * Returns an async_cookie_t that may be used for checkpointing later. * Note: This function may be called from atomic or non-atomic contexts. * * The node requested will be honored on a best effort basis. If the node * has no CPUs associated with it then the work is distributed among all * available CPUs. */ async_cookie_t async_schedule_node(async_func_t func, void *data, int node) { return async_schedule_node_domain(func, data, node, &async_dfl_domain); } EXPORT_SYMBOL_GPL(async_schedule_node); /** * async_schedule_dev_nocall - A simplified variant of async_schedule_dev() * @func: function to execute asynchronously * @dev: device argument to be passed to function * * @dev is used as both the argument for the function and to provide NUMA * context for where to run the function. * * If the asynchronous execution of @func is scheduled successfully, return * true. Otherwise, do nothing and return false, unlike async_schedule_dev() * that will run the function synchronously then. */ bool async_schedule_dev_nocall(async_func_t func, struct device *dev) { struct async_entry *entry; entry = kzalloc(sizeof(struct async_entry), GFP_KERNEL); /* Give up if there is no memory or too much work. */ if (!entry || atomic_read(&entry_count) > MAX_WORK) { kfree(entry); return false; } __async_schedule_node_domain(func, dev, dev_to_node(dev), &async_dfl_domain, entry); return true; } /** * async_synchronize_full - synchronize all asynchronous function calls * * This function waits until all asynchronous function calls have been done. */ void async_synchronize_full(void) { async_synchronize_full_domain(NULL); } EXPORT_SYMBOL_GPL(async_synchronize_full); /** * async_synchronize_full_domain - synchronize all asynchronous function within a certain domain * @domain: the domain to synchronize * * This function waits until all asynchronous function calls for the * synchronization domain specified by @domain have been done. */ void async_synchronize_full_domain(struct async_domain *domain) { async_synchronize_cookie_domain(ASYNC_COOKIE_MAX, domain); } EXPORT_SYMBOL_GPL(async_synchronize_full_domain); /** * async_synchronize_cookie_domain - synchronize asynchronous function calls within a certain domain with cookie checkpointing * @cookie: async_cookie_t to use as checkpoint * @domain: the domain to synchronize (%NULL for all registered domains) * * This function waits until all asynchronous function calls for the * synchronization domain specified by @domain submitted prior to @cookie * have been done. */ void async_synchronize_cookie_domain(async_cookie_t cookie, struct async_domain *domain) { ktime_t starttime; pr_debug("async_waiting @ %i\n", task_pid_nr(current)); starttime = ktime_get(); wait_event(async_done, lowest_in_progress(domain) >= cookie); pr_debug("async_continuing @ %i after %lli usec\n", task_pid_nr(current), microseconds_since(starttime)); } EXPORT_SYMBOL_GPL(async_synchronize_cookie_domain); /** * async_synchronize_cookie - synchronize asynchronous function calls with cookie checkpointing * @cookie: async_cookie_t to use as checkpoint * * This function waits until all asynchronous function calls prior to @cookie * have been done. */ void async_synchronize_cookie(async_cookie_t cookie) { async_synchronize_cookie_domain(cookie, &async_dfl_domain); } EXPORT_SYMBOL_GPL(async_synchronize_cookie); /** * current_is_async - is %current an async worker task? * * Returns %true if %current is an async worker task. */ bool current_is_async(void) { struct worker *worker = current_wq_worker(); return worker && worker->current_func == async_run_entry_fn; } EXPORT_SYMBOL_GPL(current_is_async); void __init async_init(void) { /* * Async can schedule a number of interdependent work items. However, * unbound workqueues can handle only upto min_active interdependent * work items. The default min_active of 8 isn't sufficient for async * and can lead to stalls. Let's use a dedicated workqueue with raised * min_active. */ async_wq = alloc_workqueue("async", WQ_UNBOUND, 0); BUG_ON(!async_wq); workqueue_set_min_active(async_wq, WQ_DFL_ACTIVE); } |
| 6 1 6 6 6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Sunplus spca561 subdriver * * Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr * * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "spca561" #include <linux/input.h> #include "gspca.h" MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>"); MODULE_DESCRIPTION("GSPCA/SPCA561 USB Camera Driver"); MODULE_LICENSE("GPL"); #define EXPOSURE_MAX (2047 + 325) /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ struct { /* hue/contrast control cluster */ struct v4l2_ctrl *contrast; struct v4l2_ctrl *hue; }; struct v4l2_ctrl *autogain; #define EXPO12A_DEF 3 __u8 expo12a; /* expo/gain? for rev 12a */ __u8 chip_revision; #define Rev012A 0 #define Rev072A 1 signed char ag_cnt; #define AG_CNT_START 13 }; static const struct v4l2_pix_format sif_012a_mode[] = { {160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 3}, {176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {320, 240, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 4 / 8, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {352, 288, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 4 / 8, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; static const struct v4l2_pix_format sif_072a_mode[] = { {160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 3}, {176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {320, 240, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {352, 288, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; /* * Initialization data * I'm not very sure how to split initialization from open data * chunks. For now, we'll consider everything as initialization */ /* Frame packet header offsets for the spca561 */ #define SPCA561_OFFSET_SNAP 1 #define SPCA561_OFFSET_TYPE 2 #define SPCA561_OFFSET_COMPRESS 3 #define SPCA561_OFFSET_FRAMSEQ 4 #define SPCA561_OFFSET_GPIO 5 #define SPCA561_OFFSET_USBBUFF 6 #define SPCA561_OFFSET_WIN2GRAVE 7 #define SPCA561_OFFSET_WIN2RAVE 8 #define SPCA561_OFFSET_WIN2BAVE 9 #define SPCA561_OFFSET_WIN2GBAVE 10 #define SPCA561_OFFSET_WIN1GRAVE 11 #define SPCA561_OFFSET_WIN1RAVE 12 #define SPCA561_OFFSET_WIN1BAVE 13 #define SPCA561_OFFSET_WIN1GBAVE 14 #define SPCA561_OFFSET_FREQ 15 #define SPCA561_OFFSET_VSYNC 16 #define SPCA561_INDEX_I2C_BASE 0x8800 #define SPCA561_SNAPBIT 0x20 #define SPCA561_SNAPCTRL 0x40 static const u16 rev72a_reset[][2] = { {0x0000, 0x8114}, /* Software GPIO output data */ {0x0001, 0x8114}, /* Software GPIO output data */ {0x0000, 0x8112}, /* Some kind of reset */ {} }; static const __u16 rev72a_init_data1[][2] = { {0x0003, 0x8701}, /* PCLK clock delay adjustment */ {0x0001, 0x8703}, /* HSYNC from cmos inverted */ {0x0011, 0x8118}, /* Enable and conf sensor */ {0x0001, 0x8118}, /* Conf sensor */ {0x0092, 0x8804}, /* I know nothing about these */ {0x0010, 0x8802}, /* 0x88xx registers, so I won't */ {} }; static const u16 rev72a_init_sensor1[][2] = { {0x0001, 0x000d}, {0x0002, 0x0018}, {0x0004, 0x0165}, {0x0005, 0x0021}, {0x0007, 0x00aa}, {0x0020, 0x1504}, {0x0039, 0x0002}, {0x0035, 0x0010}, {0x0009, 0x1049}, {0x0028, 0x000b}, {0x003b, 0x000f}, {0x003c, 0x0000}, {} }; static const __u16 rev72a_init_data2[][2] = { {0x0018, 0x8601}, /* Pixel/line selection for color separation */ {0x0000, 0x8602}, /* Optical black level for user setting */ {0x0060, 0x8604}, /* Optical black horizontal offset */ {0x0002, 0x8605}, /* Optical black vertical offset */ {0x0000, 0x8603}, /* Non-automatic optical black level */ {0x0002, 0x865b}, /* Horizontal offset for valid pixels */ {0x0000, 0x865f}, /* Vertical valid pixels window (x2) */ {0x00b0, 0x865d}, /* Horizontal valid pixels window (x2) */ {0x0090, 0x865e}, /* Vertical valid lines window (x2) */ {0x00e0, 0x8406}, /* Memory buffer threshold */ {0x0000, 0x8660}, /* Compensation memory stuff */ {0x0002, 0x8201}, /* Output address for r/w serial EEPROM */ {0x0008, 0x8200}, /* Clear valid bit for serial EEPROM */ {0x0001, 0x8200}, /* OprMode to be executed by hardware */ /* from ms-win */ {0x0000, 0x8611}, /* R offset for white balance */ {0x00fd, 0x8612}, /* Gr offset for white balance */ {0x0003, 0x8613}, /* B offset for white balance */ {0x0000, 0x8614}, /* Gb offset for white balance */ /* from ms-win */ {0x0035, 0x8651}, /* R gain for white balance */ {0x0040, 0x8652}, /* Gr gain for white balance */ {0x005f, 0x8653}, /* B gain for white balance */ {0x0040, 0x8654}, /* Gb gain for white balance */ {0x0002, 0x8502}, /* Maximum average bit rate stuff */ {0x0011, 0x8802}, {0x0087, 0x8700}, /* Set master clock (96Mhz????) */ {0x0081, 0x8702}, /* Master clock output enable */ {0x0000, 0x8500}, /* Set image type (352x288 no compression) */ /* Originally was 0x0010 (352x288 compression) */ {0x0002, 0x865b}, /* Horizontal offset for valid pixels */ {0x0003, 0x865c}, /* Vertical offset for valid lines */ {} }; static const u16 rev72a_init_sensor2[][2] = { {0x0003, 0x0121}, {0x0004, 0x0165}, {0x0005, 0x002f}, /* blanking control column */ {0x0006, 0x0000}, /* blanking mode row*/ {0x000a, 0x0002}, {0x0009, 0x1061}, /* setexposure times && pixel clock * 0001 0 | 000 0110 0001 */ {0x0035, 0x0014}, {} }; /******************** QC Express etch2 stuff ********************/ static const __u16 Pb100_1map8300[][2] = { /* reg, value */ {0x8320, 0x3304}, {0x8303, 0x0125}, /* image area */ {0x8304, 0x0169}, {0x8328, 0x000b}, {0x833c, 0x0001}, /*fixme: win:07*/ {0x832f, 0x1904}, /*fixme: was 0419*/ {0x8307, 0x00aa}, {0x8301, 0x0003}, {0x8302, 0x000e}, {} }; static const __u16 Pb100_2map8300[][2] = { /* reg, value */ {0x8339, 0x0000}, {0x8307, 0x00aa}, {} }; static const __u16 spca561_161rev12A_data1[][2] = { {0x29, 0x8118}, /* Control register (various enable bits) */ {0x08, 0x8114}, /* GPIO: Led off */ {0x0e, 0x8112}, /* 0x0e stream off 0x3e stream on */ {0x00, 0x8102}, /* white balance - new */ {0x92, 0x8804}, {0x04, 0x8802}, /* windows uses 08 */ {} }; static const __u16 spca561_161rev12A_data2[][2] = { {0x21, 0x8118}, {0x10, 0x8500}, {0x07, 0x8601}, {0x07, 0x8602}, {0x04, 0x8501}, {0x07, 0x8201}, /* windows uses 02 */ {0x08, 0x8200}, {0x01, 0x8200}, {0x90, 0x8604}, {0x00, 0x8605}, {0xb0, 0x8603}, /* sensor gains */ {0x07, 0x8601}, /* white balance - new */ {0x07, 0x8602}, /* white balance - new */ {0x00, 0x8610}, /* *red */ {0x00, 0x8611}, /* 3f *green */ {0x00, 0x8612}, /* green *blue */ {0x00, 0x8613}, /* blue *green */ {0x43, 0x8614}, /* green *red - white balance - was 0x35 */ {0x40, 0x8615}, /* 40 *green - white balance - was 0x35 */ {0x71, 0x8616}, /* 7a *blue - white balance - was 0x35 */ {0x40, 0x8617}, /* 40 *green - white balance - was 0x35 */ {0x0c, 0x8620}, /* 0c */ {0xc8, 0x8631}, /* c8 */ {0xc8, 0x8634}, /* c8 */ {0x23, 0x8635}, /* 23 */ {0x1f, 0x8636}, /* 1f */ {0xdd, 0x8637}, /* dd */ {0xe1, 0x8638}, /* e1 */ {0x1d, 0x8639}, /* 1d */ {0x21, 0x863a}, /* 21 */ {0xe3, 0x863b}, /* e3 */ {0xdf, 0x863c}, /* df */ {0xf0, 0x8505}, {0x32, 0x850a}, /* {0x99, 0x8700}, * - white balance - new (removed) */ /* HDG we used to do this in stop0, making the init state and the state after a start / stop different, so do this here instead. */ {0x29, 0x8118}, {} }; static void reg_w_val(struct gspca_dev *gspca_dev, __u16 index, __u8 value) { int ret; struct usb_device *dev = gspca_dev->dev; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); gspca_dbg(gspca_dev, D_USBO, "reg write: 0x%02x:0x%02x\n", index, value); if (ret < 0) pr_err("reg write: error %d\n", ret); } static void write_vector(struct gspca_dev *gspca_dev, const __u16 data[][2]) { int i; i = 0; while (data[i][1] != 0) { reg_w_val(gspca_dev, data[i][1], data[i][0]); i++; } } /* read 'len' bytes to gspca_dev->usb_buf */ static void reg_r(struct gspca_dev *gspca_dev, __u16 index, __u16 length) { usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, /* value */ index, gspca_dev->usb_buf, length, 500); } /* write 'len' bytes from gspca_dev->usb_buf */ static void reg_w_buf(struct gspca_dev *gspca_dev, __u16 index, __u16 len) { usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, /* value */ index, gspca_dev->usb_buf, len, 500); } static void i2c_write(struct gspca_dev *gspca_dev, __u16 value, __u16 reg) { int retry = 60; reg_w_val(gspca_dev, 0x8801, reg); reg_w_val(gspca_dev, 0x8805, value); reg_w_val(gspca_dev, 0x8800, value >> 8); do { reg_r(gspca_dev, 0x8803, 1); if (!gspca_dev->usb_buf[0]) return; msleep(10); } while (--retry); } static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode) { int retry = 60; __u8 value; reg_w_val(gspca_dev, 0x8804, 0x92); reg_w_val(gspca_dev, 0x8801, reg); reg_w_val(gspca_dev, 0x8802, mode | 0x01); do { reg_r(gspca_dev, 0x8803, 1); if (!gspca_dev->usb_buf[0]) { reg_r(gspca_dev, 0x8800, 1); value = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8805, 1); return ((int) value << 8) | gspca_dev->usb_buf[0]; } msleep(10); } while (--retry); return -1; } static void sensor_mapwrite(struct gspca_dev *gspca_dev, const __u16 (*sensormap)[2]) { while ((*sensormap)[0]) { gspca_dev->usb_buf[0] = (*sensormap)[1]; gspca_dev->usb_buf[1] = (*sensormap)[1] >> 8; reg_w_buf(gspca_dev, (*sensormap)[0], 2); sensormap++; } } static void write_sensor_72a(struct gspca_dev *gspca_dev, const __u16 (*sensor)[2]) { while ((*sensor)[0]) { i2c_write(gspca_dev, (*sensor)[1], (*sensor)[0]); sensor++; } } static void init_161rev12A(struct gspca_dev *gspca_dev) { write_vector(gspca_dev, spca561_161rev12A_data1); sensor_mapwrite(gspca_dev, Pb100_1map8300); /*fixme: should be in sd_start*/ write_vector(gspca_dev, spca561_161rev12A_data2); sensor_mapwrite(gspca_dev, Pb100_2map8300); } /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; __u16 vendor, product; __u8 data1, data2; /* Read frm global register the USB product and vendor IDs, just to * prove that we can communicate with the device. This works, which * confirms at we are communicating properly and that the device * is a 561. */ reg_r(gspca_dev, 0x8104, 1); data1 = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8105, 1); data2 = gspca_dev->usb_buf[0]; vendor = (data2 << 8) | data1; reg_r(gspca_dev, 0x8106, 1); data1 = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8107, 1); data2 = gspca_dev->usb_buf[0]; product = (data2 << 8) | data1; if (vendor != id->idVendor || product != id->idProduct) { gspca_dbg(gspca_dev, D_PROBE, "Bad vendor / product from device\n"); return -EINVAL; } cam = &gspca_dev->cam; cam->needs_full_bandwidth = 1; sd->chip_revision = id->driver_info; if (sd->chip_revision == Rev012A) { cam->cam_mode = sif_012a_mode; cam->nmodes = ARRAY_SIZE(sif_012a_mode); } else { cam->cam_mode = sif_072a_mode; cam->nmodes = ARRAY_SIZE(sif_072a_mode); } sd->expo12a = EXPO12A_DEF; return 0; } /* this function is called at probe and resume time */ static int sd_init_12a(struct gspca_dev *gspca_dev) { gspca_dbg(gspca_dev, D_STREAM, "Chip revision: 012a\n"); init_161rev12A(gspca_dev); return 0; } static int sd_init_72a(struct gspca_dev *gspca_dev) { gspca_dbg(gspca_dev, D_STREAM, "Chip revision: 072a\n"); write_vector(gspca_dev, rev72a_reset); msleep(200); write_vector(gspca_dev, rev72a_init_data1); write_sensor_72a(gspca_dev, rev72a_init_sensor1); write_vector(gspca_dev, rev72a_init_data2); write_sensor_72a(gspca_dev, rev72a_init_sensor2); reg_w_val(gspca_dev, 0x8112, 0x30); return 0; } static void setbrightness(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; __u16 reg; if (sd->chip_revision == Rev012A) reg = 0x8610; else reg = 0x8611; reg_w_val(gspca_dev, reg + 0, val); /* R */ reg_w_val(gspca_dev, reg + 1, val); /* Gr */ reg_w_val(gspca_dev, reg + 2, val); /* B */ reg_w_val(gspca_dev, reg + 3, val); /* Gb */ } static void setwhite(struct gspca_dev *gspca_dev, s32 white, s32 contrast) { struct sd *sd = (struct sd *) gspca_dev; __u8 blue, red; __u16 reg; /* try to emulate MS-win as possible */ red = 0x20 + white * 3 / 8; blue = 0x90 - white * 5 / 8; if (sd->chip_revision == Rev012A) { reg = 0x8614; } else { reg = 0x8651; red += contrast - 0x20; blue += contrast - 0x20; reg_w_val(gspca_dev, 0x8652, contrast + 0x20); /* Gr */ reg_w_val(gspca_dev, 0x8654, contrast + 0x20); /* Gb */ } reg_w_val(gspca_dev, reg, red); reg_w_val(gspca_dev, reg + 2, blue); } /* rev 12a only */ static void setexposure(struct gspca_dev *gspca_dev, s32 val) { int i, expo = 0; /* Register 0x8309 controls exposure for the spca561, the basic exposure setting goes from 1-2047, where 1 is completely dark and 2047 is very bright. It not only influences exposure but also the framerate (to allow for longer exposure) from 1 - 300 it only raises the exposure time then from 300 - 600 it halves the framerate to be able to further raise the exposure time and for every 300 more it halves the framerate again. This allows for a maximum exposure time of circa 0.2 - 0.25 seconds (30 / (2000/3000) fps). Sometimes this is not enough, the 1-2047 uses bits 0-10, bits 11-12 configure a divider for the base framerate which us used at the exposure setting of 1-300. These bits configure the base framerate according to the following formula: fps = 60 / (value + 2) */ /* We choose to use the high bits setting the fixed framerate divisor asap, as setting high basic exposure setting without the fixed divider in combination with high gains makes the cam stop */ static const int table[] = { 0, 450, 550, 625, EXPOSURE_MAX }; for (i = 0; i < ARRAY_SIZE(table) - 1; i++) { if (val <= table[i + 1]) { expo = val - table[i]; if (i) expo += 300; expo |= i << 11; break; } } gspca_dev->usb_buf[0] = expo; gspca_dev->usb_buf[1] = expo >> 8; reg_w_buf(gspca_dev, 0x8309, 2); } /* rev 12a only */ static void setgain(struct gspca_dev *gspca_dev, s32 val) { /* gain reg low 6 bits 0-63 gain, bit 6 and 7, both double the sensitivity when set, so 31 + one of them set == 63, and 15 with both of them set == 63 */ if (val < 64) gspca_dev->usb_buf[0] = val; else if (val < 128) gspca_dev->usb_buf[0] = (val / 2) | 0x40; else gspca_dev->usb_buf[0] = (val / 4) | 0xc0; gspca_dev->usb_buf[1] = 0; reg_w_buf(gspca_dev, 0x8335, 2); } static void setautogain(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; if (val) sd->ag_cnt = AG_CNT_START; else sd->ag_cnt = -1; } static int sd_start_12a(struct gspca_dev *gspca_dev) { int mode; static const __u8 Reg8391[8] = {0x92, 0x30, 0x20, 0x00, 0x0c, 0x00, 0x00, 0x00}; mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv; if (mode <= 1) { /* Use compression on 320x240 and above */ reg_w_val(gspca_dev, 0x8500, 0x10 | mode); } else { /* I couldn't get the compression to work below 320x240 * Fortunately at these resolutions the bandwidth * is sufficient to push raw frames at ~20fps */ reg_w_val(gspca_dev, 0x8500, mode); } /* -- qq@kuku.eu.org */ gspca_dev->usb_buf[0] = 0xaa; gspca_dev->usb_buf[1] = 0x00; reg_w_buf(gspca_dev, 0x8307, 2); /* clock - lower 0x8X values lead to fps > 30 */ reg_w_val(gspca_dev, 0x8700, 0x8a); /* 0x8f 0x85 0x27 clock */ reg_w_val(gspca_dev, 0x8112, 0x1e | 0x20); reg_w_val(gspca_dev, 0x850b, 0x03); memcpy(gspca_dev->usb_buf, Reg8391, 8); reg_w_buf(gspca_dev, 0x8391, 8); reg_w_buf(gspca_dev, 0x8390, 8); /* Led ON (bit 3 -> 0 */ reg_w_val(gspca_dev, 0x8114, 0x00); return 0; } static int sd_start_72a(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int Clck; int mode; write_vector(gspca_dev, rev72a_reset); msleep(200); write_vector(gspca_dev, rev72a_init_data1); write_sensor_72a(gspca_dev, rev72a_init_sensor1); mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv; switch (mode) { default: case 0: Clck = 0x27; /* ms-win 0x87 */ break; case 1: Clck = 0x25; break; case 2: Clck = 0x22; break; case 3: Clck = 0x21; break; } reg_w_val(gspca_dev, 0x8700, Clck); /* 0x27 clock */ reg_w_val(gspca_dev, 0x8702, 0x81); reg_w_val(gspca_dev, 0x8500, mode); /* mode */ write_sensor_72a(gspca_dev, rev72a_init_sensor2); setwhite(gspca_dev, v4l2_ctrl_g_ctrl(sd->hue), v4l2_ctrl_g_ctrl(sd->contrast)); /* setbrightness(gspca_dev); * fixme: bad values */ setautogain(gspca_dev, v4l2_ctrl_g_ctrl(sd->autogain)); reg_w_val(gspca_dev, 0x8112, 0x10 | 0x20); return 0; } static void sd_stopN(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (sd->chip_revision == Rev012A) { reg_w_val(gspca_dev, 0x8112, 0x0e); /* Led Off (bit 3 -> 1 */ reg_w_val(gspca_dev, 0x8114, 0x08); } else { reg_w_val(gspca_dev, 0x8112, 0x20); /* reg_w_val(gspca_dev, 0x8102, 0x00); ?? */ } } static void do_autogain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int expotimes; int pixelclk; int gainG; __u8 R, Gr, Gb, B; int y; __u8 luma_mean = 110; __u8 luma_delta = 20; __u8 spring = 4; if (sd->ag_cnt < 0) return; if (--sd->ag_cnt >= 0) return; sd->ag_cnt = AG_CNT_START; switch (sd->chip_revision) { case Rev072A: reg_r(gspca_dev, 0x8621, 1); Gr = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8622, 1); R = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8623, 1); B = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8624, 1); Gb = gspca_dev->usb_buf[0]; y = (77 * R + 75 * (Gr + Gb) + 29 * B) >> 8; /* u= (128*B-(43*(Gr+Gb+R))) >> 8; */ /* v= (128*R-(53*(Gr+Gb))-21*B) >> 8; */ if (y < luma_mean - luma_delta || y > luma_mean + luma_delta) { expotimes = i2c_read(gspca_dev, 0x09, 0x10); pixelclk = 0x0800; expotimes = expotimes & 0x07ff; gainG = i2c_read(gspca_dev, 0x35, 0x10); expotimes += (luma_mean - y) >> spring; gainG += (luma_mean - y) / 50; if (gainG > 0x3f) gainG = 0x3f; else if (gainG < 3) gainG = 3; i2c_write(gspca_dev, gainG, 0x35); if (expotimes > 0x0256) expotimes = 0x0256; else if (expotimes < 3) expotimes = 3; i2c_write(gspca_dev, expotimes | pixelclk, 0x09); } break; } } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; len--; switch (*data++) { /* sequence number */ case 0: /* start of frame */ gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); /* This should never happen */ if (len < 2) { gspca_err(gspca_dev, "Short SOF packet, ignoring\n\n\n\n\n"); gspca_dev->last_packet_type = DISCARD_PACKET; return; } #if IS_ENABLED(CONFIG_INPUT) if (data[0] & 0x20) { input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1); input_sync(gspca_dev->input_dev); input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); input_sync(gspca_dev->input_dev); } #endif if (data[1] & 0x10) { /* compressed bayer */ gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); } else { /* raw bayer (with a header, which we skip) */ if (sd->chip_revision == Rev012A) { data += 20; len -= 20; } else { data += 16; len -= 16; } gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); } return; case 0xff: /* drop (empty mpackets) */ return; } gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } static int sd_s_ctrl(struct v4l2_ctrl *ctrl) { struct gspca_dev *gspca_dev = container_of(ctrl->handler, struct gspca_dev, ctrl_handler); struct sd *sd = (struct sd *)gspca_dev; gspca_dev->usb_err = 0; if (!gspca_dev->streaming) return 0; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: setbrightness(gspca_dev, ctrl->val); break; case V4L2_CID_CONTRAST: /* hue/contrast control cluster for 72a */ setwhite(gspca_dev, sd->hue->val, ctrl->val); break; case V4L2_CID_HUE: /* just plain hue control for 12a */ setwhite(gspca_dev, ctrl->val, 0); break; case V4L2_CID_EXPOSURE: setexposure(gspca_dev, ctrl->val); break; case V4L2_CID_GAIN: setgain(gspca_dev, ctrl->val); break; case V4L2_CID_AUTOGAIN: setautogain(gspca_dev, ctrl->val); break; } return gspca_dev->usb_err; } static const struct v4l2_ctrl_ops sd_ctrl_ops = { .s_ctrl = sd_s_ctrl, }; static int sd_init_controls_12a(struct gspca_dev *gspca_dev) { struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 3); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_HUE, 1, 0x7f, 1, 0x40); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, -128, 127, 1, 0); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_EXPOSURE, 1, EXPOSURE_MAX, 1, 700); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 255, 1, 63); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } return 0; } static int sd_init_controls_72a(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *)gspca_dev; struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 4); sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_CONTRAST, 0, 0x3f, 1, 0x20); sd->hue = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_HUE, 1, 0x7f, 1, 0x40); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 0x3f, 1, 0x20); sd->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } v4l2_ctrl_cluster(2, &sd->contrast); return 0; } /* sub-driver description */ static const struct sd_desc sd_desc_12a = { .name = MODULE_NAME, .init_controls = sd_init_controls_12a, .config = sd_config, .init = sd_init_12a, .start = sd_start_12a, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan, #if IS_ENABLED(CONFIG_INPUT) .other_input = 1, #endif }; static const struct sd_desc sd_desc_72a = { .name = MODULE_NAME, .init_controls = sd_init_controls_72a, .config = sd_config, .init = sd_init_72a, .start = sd_start_72a, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan, .dq_callback = do_autogain, #if IS_ENABLED(CONFIG_INPUT) .other_input = 1, #endif }; static const struct sd_desc *sd_desc[2] = { &sd_desc_12a, &sd_desc_72a }; /* -- module initialisation -- */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x041e, 0x401a), .driver_info = Rev072A}, {USB_DEVICE(0x041e, 0x403b), .driver_info = Rev012A}, {USB_DEVICE(0x0458, 0x7004), .driver_info = Rev072A}, {USB_DEVICE(0x0461, 0x0815), .driver_info = Rev072A}, {USB_DEVICE(0x046d, 0x0928), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x0929), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092a), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092b), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092c), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092d), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092e), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092f), .driver_info = Rev012A}, {USB_DEVICE(0x04fc, 0x0561), .driver_info = Rev072A}, {USB_DEVICE(0x060b, 0xa001), .driver_info = Rev072A}, {USB_DEVICE(0x10fd, 0x7e50), .driver_info = Rev072A}, {USB_DEVICE(0xabcd, 0xcdee), .driver_info = Rev072A}, {} }; MODULE_DEVICE_TABLE(usb, device_table); /* -- device connect -- */ static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id) { return gspca_dev_probe(intf, id, sd_desc[id->driver_info], sizeof(struct sd), THIS_MODULE); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = device_table, .probe = sd_probe, .disconnect = gspca_disconnect, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, .reset_resume = gspca_resume, #endif }; module_usb_driver(sd_driver); |
| 4 4 4 4 4 4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2021 pureLiFi */ #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/slab.h> #include <linux/usb.h> #include <linux/jiffies.h> #include <net/ieee80211_radiotap.h> #include "chip.h" #include "mac.h" #include "usb.h" static const struct ieee80211_rate plfxlc_rates[] = { { .bitrate = 10, .hw_value = PURELIFI_CCK_RATE_1M, .flags = 0 }, { .bitrate = 20, .hw_value = PURELIFI_CCK_RATE_2M, .hw_value_short = PURELIFI_CCK_RATE_2M | PURELIFI_CCK_PREA_SHORT, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, { .bitrate = 55, .hw_value = PURELIFI_CCK_RATE_5_5M, .hw_value_short = PURELIFI_CCK_RATE_5_5M | PURELIFI_CCK_PREA_SHORT, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, { .bitrate = 110, .hw_value = PURELIFI_CCK_RATE_11M, .hw_value_short = PURELIFI_CCK_RATE_11M | PURELIFI_CCK_PREA_SHORT, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, { .bitrate = 60, .hw_value = PURELIFI_OFDM_RATE_6M, .flags = 0 }, { .bitrate = 90, .hw_value = PURELIFI_OFDM_RATE_9M, .flags = 0 }, { .bitrate = 120, .hw_value = PURELIFI_OFDM_RATE_12M, .flags = 0 }, { .bitrate = 180, .hw_value = PURELIFI_OFDM_RATE_18M, .flags = 0 }, { .bitrate = 240, .hw_value = PURELIFI_OFDM_RATE_24M, .flags = 0 }, { .bitrate = 360, .hw_value = PURELIFI_OFDM_RATE_36M, .flags = 0 }, { .bitrate = 480, .hw_value = PURELIFI_OFDM_RATE_48M, .flags = 0 }, { .bitrate = 540, .hw_value = PURELIFI_OFDM_RATE_54M, .flags = 0 } }; static const struct ieee80211_channel plfxlc_channels[] = { { .center_freq = 2412, .hw_value = 1 }, { .center_freq = 2417, .hw_value = 2 }, { .center_freq = 2422, .hw_value = 3 }, { .center_freq = 2427, .hw_value = 4 }, { .center_freq = 2432, .hw_value = 5 }, { .center_freq = 2437, .hw_value = 6 }, { .center_freq = 2442, .hw_value = 7 }, { .center_freq = 2447, .hw_value = 8 }, { .center_freq = 2452, .hw_value = 9 }, { .center_freq = 2457, .hw_value = 10 }, { .center_freq = 2462, .hw_value = 11 }, { .center_freq = 2467, .hw_value = 12 }, { .center_freq = 2472, .hw_value = 13 }, { .center_freq = 2484, .hw_value = 14 }, }; int plfxlc_mac_preinit_hw(struct ieee80211_hw *hw, const u8 *hw_address) { SET_IEEE80211_PERM_ADDR(hw, hw_address); return 0; } int plfxlc_mac_init_hw(struct ieee80211_hw *hw) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); struct plfxlc_chip *chip = &mac->chip; int r; r = plfxlc_chip_init_hw(chip); if (r) { dev_warn(plfxlc_mac_dev(mac), "init hw failed (%d)\n", r); return r; } dev_dbg(plfxlc_mac_dev(mac), "irq_disabled (%d)\n", irqs_disabled()); regulatory_hint(hw->wiphy, "00"); return r; } int plfxlc_op_start(struct ieee80211_hw *hw) { plfxlc_hw_mac(hw)->chip.usb.initialized = 1; return 0; } void plfxlc_op_stop(struct ieee80211_hw *hw, bool suspend) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); clear_bit(PURELIFI_DEVICE_RUNNING, &mac->flags); } int plfxlc_restore_settings(struct plfxlc_mac *mac) { int beacon_interval, beacon_period; struct sk_buff *beacon; spin_lock_irq(&mac->lock); beacon_interval = mac->beacon.interval; beacon_period = mac->beacon.period; spin_unlock_irq(&mac->lock); if (mac->type != NL80211_IFTYPE_ADHOC) return 0; if (mac->vif) { beacon = ieee80211_beacon_get(mac->hw, mac->vif, 0); if (beacon) { /*beacon is hardcoded in firmware */ kfree_skb(beacon); /* Returned skb is used only once and lowlevel * driver is responsible for freeing it. */ } } plfxlc_set_beacon_interval(&mac->chip, beacon_interval, beacon_period, mac->type); spin_lock_irq(&mac->lock); mac->beacon.last_update = jiffies; spin_unlock_irq(&mac->lock); return 0; } static void plfxlc_mac_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, int ackssi, struct tx_status *tx_status) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); int success = 1; ieee80211_tx_info_clear_status(info); if (tx_status) success = !tx_status->failure; if (success) info->flags |= IEEE80211_TX_STAT_ACK; else info->flags &= ~IEEE80211_TX_STAT_ACK; info->status.ack_signal = 50; ieee80211_tx_status_irqsafe(hw, skb); } void plfxlc_mac_tx_to_dev(struct sk_buff *skb, int error) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_hw *hw = info->rate_driver_data[0]; struct plfxlc_mac *mac = plfxlc_hw_mac(hw); struct sk_buff_head *q = NULL; ieee80211_tx_info_clear_status(info); skb_pull(skb, sizeof(struct plfxlc_ctrlset)); if (unlikely(error || (info->flags & IEEE80211_TX_CTL_NO_ACK))) { ieee80211_tx_status_irqsafe(hw, skb); return; } q = &mac->ack_wait_queue; skb_queue_tail(q, skb); while (skb_queue_len(q)/* > PURELIFI_MAC_MAX_ACK_WAITERS*/) { plfxlc_mac_tx_status(hw, skb_dequeue(q), mac->ack_pending ? mac->ack_signal : 0, NULL); mac->ack_pending = 0; } } static int plfxlc_fill_ctrlset(struct plfxlc_mac *mac, struct sk_buff *skb) { unsigned int frag_len = skb->len; struct plfxlc_ctrlset *cs; u32 temp_payload_len = 0; unsigned int tmp; u32 temp_len = 0; if (skb_headroom(skb) < sizeof(struct plfxlc_ctrlset)) { dev_dbg(plfxlc_mac_dev(mac), "Not enough hroom(1)\n"); return 1; } cs = (void *)skb_push(skb, sizeof(struct plfxlc_ctrlset)); temp_payload_len = frag_len; temp_len = temp_payload_len + sizeof(struct plfxlc_ctrlset) - sizeof(cs->id) - sizeof(cs->len); /* Data packet lengths must be multiple of four bytes and must * not be a multiple of 512 bytes. First, it is attempted to * append the data packet in the tailroom of the skb. In rare * occasions, the tailroom is too small. In this case, the * content of the packet is shifted into the headroom of the skb * by memcpy. Headroom is allocated at startup (below in this * file). Therefore, there will be always enough headroom. The * call skb_headroom is an additional safety which might be * dropped. */ /* check if 32 bit aligned and align data */ tmp = skb->len & 3; if (tmp) { if (skb_tailroom(skb) < (3 - tmp)) { if (skb_headroom(skb) >= 4 - tmp) { u8 len; u8 *src_pt; u8 *dest_pt; len = skb->len; src_pt = skb->data; dest_pt = skb_push(skb, 4 - tmp); memmove(dest_pt, src_pt, len); } else { return -ENOBUFS; } } else { skb_put(skb, 4 - tmp); } temp_len += 4 - tmp; } /* check if not multiple of 512 and align data */ tmp = skb->len & 0x1ff; if (!tmp) { if (skb_tailroom(skb) < 4) { if (skb_headroom(skb) >= 4) { u8 len = skb->len; u8 *src_pt = skb->data; u8 *dest_pt = skb_push(skb, 4); memmove(dest_pt, src_pt, len); } else { /* should never happen because * sufficient headroom was reserved */ return -ENOBUFS; } } else { skb_put(skb, 4); } temp_len += 4; } cs->id = cpu_to_be32(USB_REQ_DATA_TX); cs->len = cpu_to_be32(temp_len); cs->payload_len_nw = cpu_to_be32(temp_payload_len); return 0; } static void plfxlc_op_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct plfxlc_header *plhdr = (void *)skb->data; struct plfxlc_mac *mac = plfxlc_hw_mac(hw); struct plfxlc_usb *usb = &mac->chip.usb; unsigned long flags; int r; r = plfxlc_fill_ctrlset(mac, skb); if (r) goto fail; info->rate_driver_data[0] = hw; if (plhdr->frametype == IEEE80211_FTYPE_DATA) { u8 *dst_mac = plhdr->dmac; u8 sidx; bool found = false; struct plfxlc_usb_tx *tx = &usb->tx; for (sidx = 0; sidx < MAX_STA_NUM; sidx++) { if (!(tx->station[sidx].flag & STATION_CONNECTED_FLAG)) continue; if (memcmp(tx->station[sidx].mac, dst_mac, ETH_ALEN)) continue; found = true; break; } /* Default to broadcast address for unknown MACs */ if (!found) sidx = STA_BROADCAST_INDEX; /* Stop OS from sending packets, if the queue is half full */ if (skb_queue_len(&tx->station[sidx].data_list) > 60) ieee80211_stop_queues(plfxlc_usb_to_hw(usb)); /* Schedule packet for transmission if queue is not full */ if (skb_queue_len(&tx->station[sidx].data_list) > 256) goto fail; skb_queue_tail(&tx->station[sidx].data_list, skb); plfxlc_send_packet_from_data_queue(usb); } else { spin_lock_irqsave(&usb->tx.lock, flags); r = plfxlc_usb_wreq_async(&mac->chip.usb, skb->data, skb->len, USB_REQ_DATA_TX, plfxlc_tx_urb_complete, skb); spin_unlock_irqrestore(&usb->tx.lock, flags); if (r) goto fail; } return; fail: dev_kfree_skb(skb); } static int plfxlc_filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr, struct ieee80211_rx_status *stats) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); struct sk_buff_head *q; int i, position = 0; unsigned long flags; struct sk_buff *skb; bool found = false; if (!ieee80211_is_ack(rx_hdr->frame_control)) return 0; dev_dbg(plfxlc_mac_dev(mac), "ACK Received\n"); /* code based on zy driver, this logic may need fix */ q = &mac->ack_wait_queue; spin_lock_irqsave(&q->lock, flags); skb_queue_walk(q, skb) { struct ieee80211_hdr *tx_hdr; position++; if (mac->ack_pending && skb_queue_is_first(q, skb)) continue; if (mac->ack_pending == 0) break; tx_hdr = (struct ieee80211_hdr *)skb->data; if (likely(ether_addr_equal(tx_hdr->addr2, rx_hdr->addr1))) { found = 1; break; } } if (found) { for (i = 1; i < position; i++) skb = __skb_dequeue(q); if (i == position) { plfxlc_mac_tx_status(hw, skb, mac->ack_pending ? mac->ack_signal : 0, NULL); mac->ack_pending = 0; } mac->ack_pending = skb_queue_len(q) ? 1 : 0; mac->ack_signal = stats->signal; } spin_unlock_irqrestore(&q->lock, flags); return 1; } int plfxlc_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); struct ieee80211_rx_status stats; const struct rx_status *status; unsigned int payload_length; struct plfxlc_usb_tx *tx; struct sk_buff *skb; int need_padding; __le16 fc; int sidx; /* Packet blockade during disabled interface. */ if (!mac->vif) return 0; status = (struct rx_status *)buffer; memset(&stats, 0, sizeof(stats)); stats.flag = 0; stats.freq = 2412; stats.band = NL80211_BAND_LC; mac->rssi = -15 * be16_to_cpu(status->rssi) / 10; stats.signal = mac->rssi; if (status->rate_idx > 7) stats.rate_idx = 0; else stats.rate_idx = status->rate_idx; mac->crc_errors = be64_to_cpu(status->crc_error_count); /* TODO bad frame check for CRC error*/ if (plfxlc_filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) && !mac->pass_ctrl) return 0; buffer += sizeof(struct rx_status); payload_length = get_unaligned_be32(buffer); if (payload_length > 1560) { dev_err(plfxlc_mac_dev(mac), " > MTU %u\n", payload_length); return 0; } buffer += sizeof(u32); fc = get_unaligned((__le16 *)buffer); need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc); tx = &mac->chip.usb.tx; for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) { if (memcmp(&buffer[10], tx->station[sidx].mac, ETH_ALEN)) continue; if (tx->station[sidx].flag & STATION_CONNECTED_FLAG) { tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG; break; } } if (sidx == MAX_STA_NUM - 1) { for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) { if (tx->station[sidx].flag & STATION_CONNECTED_FLAG) continue; memcpy(tx->station[sidx].mac, &buffer[10], ETH_ALEN); tx->station[sidx].flag |= STATION_CONNECTED_FLAG; tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG; break; } } switch (buffer[0]) { case IEEE80211_STYPE_PROBE_REQ: dev_dbg(plfxlc_mac_dev(mac), "Probe request\n"); break; case IEEE80211_STYPE_ASSOC_REQ: dev_dbg(plfxlc_mac_dev(mac), "Association request\n"); break; case IEEE80211_STYPE_AUTH: dev_dbg(plfxlc_mac_dev(mac), "Authentication req\n"); break; case IEEE80211_FTYPE_DATA: dev_dbg(plfxlc_mac_dev(mac), "802.11 data frame\n"); break; } skb = dev_alloc_skb(payload_length + (need_padding ? 2 : 0)); if (!skb) return -ENOMEM; if (need_padding) /* Make sure that the payload data is 4 byte aligned. */ skb_reserve(skb, 2); skb_put_data(skb, buffer, payload_length); memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); ieee80211_rx_irqsafe(hw, skb); return 0; } static int plfxlc_op_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); static const char * const iftype80211[] = { [NL80211_IFTYPE_STATION] = "Station", [NL80211_IFTYPE_ADHOC] = "Adhoc" }; if (mac->type != NL80211_IFTYPE_UNSPECIFIED) return -EOPNOTSUPP; if (vif->type == NL80211_IFTYPE_ADHOC || vif->type == NL80211_IFTYPE_STATION) { dev_dbg(plfxlc_mac_dev(mac), "%s %s\n", __func__, iftype80211[vif->type]); mac->type = vif->type; mac->vif = vif; return 0; } dev_dbg(plfxlc_mac_dev(mac), "unsupported iftype\n"); return -EOPNOTSUPP; } static void plfxlc_op_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); mac->type = NL80211_IFTYPE_UNSPECIFIED; mac->vif = NULL; } static int plfxlc_op_config(struct ieee80211_hw *hw, int radio_idx, u32 changed) { return 0; } #define SUPPORTED_FIF_FLAGS \ (FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \ FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC) static void plfxlc_op_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *new_flags, u64 multicast) { struct plfxlc_mc_hash hash = { .low = multicast, .high = multicast >> 32, }; struct plfxlc_mac *mac = plfxlc_hw_mac(hw); unsigned long flags; /* Only deal with supported flags */ *new_flags &= SUPPORTED_FIF_FLAGS; /* If multicast parameter * (as returned by plfxlc_op_prepare_multicast) * has changed, no bit in changed_flags is set. To handle this * situation, we do not return if changed_flags is 0. If we do so, * we will have some issue with IPv6 which uses multicast for link * layer address resolution. */ if (*new_flags & (FIF_ALLMULTI)) plfxlc_mc_add_all(&hash); spin_lock_irqsave(&mac->lock, flags); mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL); mac->pass_ctrl = !!(*new_flags & FIF_CONTROL); mac->multicast_hash = hash; spin_unlock_irqrestore(&mac->lock, flags); /* no handling required for FIF_OTHER_BSS as we don't currently * do BSSID filtering */ /* FIXME: in future it would be nice to enable the probe response * filter (so that the driver doesn't see them) until * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd * have to schedule work to enable prbresp reception, which might * happen too late. For now we'll just listen and forward them all the * time. */ } static void plfxlc_op_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u64 changes) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); int associated; dev_dbg(plfxlc_mac_dev(mac), "changes: %llx\n", changes); if (mac->type != NL80211_IFTYPE_ADHOC) { /* for STATION */ associated = is_valid_ether_addr(bss_conf->bssid); goto exit_all; } /* for ADHOC */ associated = true; if (changes & BSS_CHANGED_BEACON) { struct sk_buff *beacon = ieee80211_beacon_get(hw, vif, 0); if (beacon) { /*beacon is hardcoded in firmware */ kfree_skb(beacon); /*Returned skb is used only once and * low-level driver is * responsible for freeing it. */ } } if (changes & BSS_CHANGED_BEACON_ENABLED) { u16 interval = 0; u8 period = 0; if (bss_conf->enable_beacon) { period = bss_conf->dtim_period; interval = bss_conf->beacon_int; } spin_lock_irq(&mac->lock); mac->beacon.period = period; mac->beacon.interval = interval; mac->beacon.last_update = jiffies; spin_unlock_irq(&mac->lock); plfxlc_set_beacon_interval(&mac->chip, interval, period, mac->type); } exit_all: spin_lock_irq(&mac->lock); mac->associated = associated; spin_unlock_irq(&mac->lock); } static int plfxlc_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats) { stats->dot11ACKFailureCount = 0; stats->dot11RTSFailureCount = 0; stats->dot11FCSErrorCount = 0; stats->dot11RTSSuccessCount = 0; return 0; } static const char et_strings[][ETH_GSTRING_LEN] = { "phy_rssi", "phy_rx_crc_err" }; static int plfxlc_get_et_sset_count(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int sset) { if (sset == ETH_SS_STATS) return ARRAY_SIZE(et_strings); return 0; } static void plfxlc_get_et_strings(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 sset, u8 *data) { if (sset == ETH_SS_STATS) memcpy(data, et_strings, sizeof(et_strings)); } static void plfxlc_get_et_stats(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ethtool_stats *stats, u64 *data) { struct plfxlc_mac *mac = plfxlc_hw_mac(hw); data[0] = mac->rssi; data[1] = mac->crc_errors; } static int plfxlc_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, u32 value) { return 0; } static const struct ieee80211_ops plfxlc_ops = { .add_chanctx = ieee80211_emulate_add_chanctx, .remove_chanctx = ieee80211_emulate_remove_chanctx, .change_chanctx = ieee80211_emulate_change_chanctx, .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, .tx = plfxlc_op_tx, .wake_tx_queue = ieee80211_handle_wake_tx_queue, .start = plfxlc_op_start, .stop = plfxlc_op_stop, .add_interface = plfxlc_op_add_interface, .remove_interface = plfxlc_op_remove_interface, .set_rts_threshold = plfxlc_set_rts_threshold, .config = plfxlc_op_config, .configure_filter = plfxlc_op_configure_filter, .bss_info_changed = plfxlc_op_bss_info_changed, .get_stats = plfxlc_get_stats, .get_et_sset_count = plfxlc_get_et_sset_count, .get_et_stats = plfxlc_get_et_stats, .get_et_strings = plfxlc_get_et_strings, }; struct ieee80211_hw *plfxlc_mac_alloc_hw(struct usb_interface *intf) { struct ieee80211_hw *hw; struct plfxlc_mac *mac; hw = ieee80211_alloc_hw(sizeof(struct plfxlc_mac), &plfxlc_ops); if (!hw) { dev_dbg(&intf->dev, "out of memory\n"); return NULL; } set_wiphy_dev(hw->wiphy, &intf->dev); mac = plfxlc_hw_mac(hw); memset(mac, 0, sizeof(*mac)); spin_lock_init(&mac->lock); mac->hw = hw; mac->type = NL80211_IFTYPE_UNSPECIFIED; memcpy(mac->channels, plfxlc_channels, sizeof(plfxlc_channels)); memcpy(mac->rates, plfxlc_rates, sizeof(plfxlc_rates)); mac->band.n_bitrates = ARRAY_SIZE(plfxlc_rates); mac->band.bitrates = mac->rates; mac->band.n_channels = ARRAY_SIZE(plfxlc_channels); mac->band.channels = mac->channels; hw->wiphy->bands[NL80211_BAND_LC] = &mac->band; hw->conf.chandef.width = NL80211_CHAN_WIDTH_20; ieee80211_hw_set(hw, RX_INCLUDES_FCS); ieee80211_hw_set(hw, SIGNAL_DBM); ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); ieee80211_hw_set(hw, MFP_CAPABLE); hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); hw->max_signal = 100; hw->queues = 1; /* 4 for 32 bit alignment if no tailroom */ hw->extra_tx_headroom = sizeof(struct plfxlc_ctrlset) + 4; /* Tell mac80211 that we support multi rate retries */ hw->max_rates = IEEE80211_TX_MAX_RATES; hw->max_rate_tries = 18; /* 9 rates * 2 retries/rate */ skb_queue_head_init(&mac->ack_wait_queue); mac->ack_pending = 0; plfxlc_chip_init(&mac->chip, hw, intf); SET_IEEE80211_DEV(hw, &intf->dev); return hw; } void plfxlc_mac_release_hw(struct ieee80211_hw *hw) { plfxlc_chip_release(&plfxlc_hw_mac(hw)->chip); ieee80211_free_hw(hw); } |
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SPDX-License-Identifier: GPL-2.0-or-later /* Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> <http://rt2x00.serialmonkey.com> */ /* Module: rt2500usb Abstract: rt2500usb device specific routines. Supported chipsets: RT2570. */ #include <linux/delay.h> #include <linux/etherdevice.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/usb.h> #include "rt2x00.h" #include "rt2x00usb.h" #include "rt2500usb.h" /* * Allow hardware encryption to be disabled. */ static bool modparam_nohwcrypt; module_param_named(nohwcrypt, modparam_nohwcrypt, bool, 0444); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); /* * Register access. * All access to the CSR registers will go through the methods * rt2500usb_register_read and rt2500usb_register_write. * BBP and RF register require indirect register access, * and use the CSR registers BBPCSR and RFCSR to achieve this. * These indirect registers work with busy bits, * and we will try maximal REGISTER_USB_BUSY_COUNT times to access * the register while taking a REGISTER_BUSY_DELAY us delay * between each attampt. When the busy bit is still set at that time, * the access attempt is considered to have failed, * and we will print an error. * If the csr_mutex is already held then the _lock variants must * be used instead. */ static u16 rt2500usb_register_read(struct rt2x00_dev *rt2x00dev, const unsigned int offset) { __le16 reg; rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ, USB_VENDOR_REQUEST_IN, offset, ®, sizeof(reg)); return le16_to_cpu(reg); } static u16 rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev, const unsigned int offset) { __le16 reg; rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ, USB_VENDOR_REQUEST_IN, offset, ®, sizeof(reg), REGISTER_TIMEOUT); return le16_to_cpu(reg); } static void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev, const unsigned int offset, u16 value) { __le16 reg = cpu_to_le16(value); rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, offset, ®, sizeof(reg)); } static void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev, const unsigned int offset, u16 value) { __le16 reg = cpu_to_le16(value); rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, offset, ®, sizeof(reg), REGISTER_TIMEOUT); } static void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev, const unsigned int offset, void *value, const u16 length) { rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, offset, value, length); } static int rt2500usb_regbusy_read(struct rt2x00_dev *rt2x00dev, const unsigned int offset, struct rt2x00_field16 field, u16 *reg) { unsigned int i; for (i = 0; i < REGISTER_USB_BUSY_COUNT; i++) { *reg = rt2500usb_register_read_lock(rt2x00dev, offset); if (!rt2x00_get_field16(*reg, field)) return 1; udelay(REGISTER_BUSY_DELAY); } rt2x00_err(rt2x00dev, "Indirect register access failed: offset=0x%.08x, value=0x%.08x\n", offset, *reg); *reg = ~0; return 0; } #define WAIT_FOR_BBP(__dev, __reg) \ rt2500usb_regbusy_read((__dev), PHY_CSR8, PHY_CSR8_BUSY, (__reg)) #define WAIT_FOR_RF(__dev, __reg) \ rt2500usb_regbusy_read((__dev), PHY_CSR10, PHY_CSR10_RF_BUSY, (__reg)) static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u8 value) { u16 reg; mutex_lock(&rt2x00dev->csr_mutex); /* * Wait until the BBP becomes available, afterwards we * can safely write the new data into the register. */ if (WAIT_FOR_BBP(rt2x00dev, ®)) { reg = 0; rt2x00_set_field16(®, PHY_CSR7_DATA, value); rt2x00_set_field16(®, PHY_CSR7_REG_ID, word); rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 0); rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg); } mutex_unlock(&rt2x00dev->csr_mutex); } static u8 rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev, const unsigned int word) { u16 reg; u8 value; mutex_lock(&rt2x00dev->csr_mutex); /* * Wait until the BBP becomes available, afterwards we * can safely write the read request into the register. * After the data has been written, we wait until hardware * returns the correct value, if at any time the register * doesn't become available in time, reg will be 0xffffffff * which means we return 0xff to the caller. */ if (WAIT_FOR_BBP(rt2x00dev, ®)) { reg = 0; rt2x00_set_field16(®, PHY_CSR7_REG_ID, word); rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 1); rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg); if (WAIT_FOR_BBP(rt2x00dev, ®)) reg = rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7); } value = rt2x00_get_field16(reg, PHY_CSR7_DATA); mutex_unlock(&rt2x00dev->csr_mutex); return value; } static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u32 value) { u16 reg; mutex_lock(&rt2x00dev->csr_mutex); /* * Wait until the RF becomes available, afterwards we * can safely write the new data into the register. */ if (WAIT_FOR_RF(rt2x00dev, ®)) { reg = 0; rt2x00_set_field16(®, PHY_CSR9_RF_VALUE, value); rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg); reg = 0; rt2x00_set_field16(®, PHY_CSR10_RF_VALUE, value >> 16); rt2x00_set_field16(®, PHY_CSR10_RF_NUMBER_OF_BITS, 20); rt2x00_set_field16(®, PHY_CSR10_RF_IF_SELECT, 0); rt2x00_set_field16(®, PHY_CSR10_RF_BUSY, 1); rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg); rt2x00_rf_write(rt2x00dev, word, value); } mutex_unlock(&rt2x00dev->csr_mutex); } #ifdef CONFIG_RT2X00_LIB_DEBUGFS static u32 _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev, const unsigned int offset) { return rt2500usb_register_read(rt2x00dev, offset); } static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev, const unsigned int offset, u32 value) { rt2500usb_register_write(rt2x00dev, offset, value); } static const struct rt2x00debug rt2500usb_rt2x00debug = { .owner = THIS_MODULE, .csr = { .read = _rt2500usb_register_read, .write = _rt2500usb_register_write, .flags = RT2X00DEBUGFS_OFFSET, .word_base = CSR_REG_BASE, .word_size = sizeof(u16), .word_count = CSR_REG_SIZE / sizeof(u16), }, .eeprom = { .read = rt2x00_eeprom_read, .write = rt2x00_eeprom_write, .word_base = EEPROM_BASE, .word_size = sizeof(u16), .word_count = EEPROM_SIZE / sizeof(u16), }, .bbp = { .read = rt2500usb_bbp_read, .write = rt2500usb_bbp_write, .word_base = BBP_BASE, .word_size = sizeof(u8), .word_count = BBP_SIZE / sizeof(u8), }, .rf = { .read = rt2x00_rf_read, .write = rt2500usb_rf_write, .word_base = RF_BASE, .word_size = sizeof(u32), .word_count = RF_SIZE / sizeof(u32), }, }; #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ static int rt2500usb_rfkill_poll(struct rt2x00_dev *rt2x00dev) { u16 reg; reg = rt2500usb_register_read(rt2x00dev, MAC_CSR19); return rt2x00_get_field16(reg, MAC_CSR19_VAL7); } #ifdef CONFIG_RT2X00_LIB_LEDS static void rt2500usb_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct rt2x00_led *led = container_of(led_cdev, struct rt2x00_led, led_dev); unsigned int enabled = brightness != LED_OFF; u16 reg; reg = rt2500usb_register_read(led->rt2x00dev, MAC_CSR20); if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC) rt2x00_set_field16(®, MAC_CSR20_LINK, enabled); else if (led->type == LED_TYPE_ACTIVITY) rt2x00_set_field16(®, MAC_CSR20_ACTIVITY, enabled); rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg); } static int rt2500usb_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, unsigned long *delay_off) { struct rt2x00_led *led = container_of(led_cdev, struct rt2x00_led, led_dev); u16 reg; reg = rt2500usb_register_read(led->rt2x00dev, MAC_CSR21); rt2x00_set_field16(®, MAC_CSR21_ON_PERIOD, *delay_on); rt2x00_set_field16(®, MAC_CSR21_OFF_PERIOD, *delay_off); rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg); return 0; } static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev, struct rt2x00_led *led, enum led_type type) { led->rt2x00dev = rt2x00dev; led->type = type; led->led_dev.brightness_set = rt2500usb_brightness_set; led->led_dev.blink_set = rt2500usb_blink_set; led->flags = LED_INITIALIZED; } #endif /* CONFIG_RT2X00_LIB_LEDS */ /* * Configuration handlers. */ /* * rt2500usb does not differentiate between shared and pairwise * keys, so we should use the same function for both key types. */ static int rt2500usb_config_key(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_crypto *crypto, struct ieee80211_key_conf *key) { u32 mask; u16 reg; enum cipher curr_cipher; if (crypto->cmd == SET_KEY) { /* * Disallow to set WEP key other than with index 0, * it is known that not work at least on some hardware. * SW crypto will be used in that case. */ if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || key->cipher == WLAN_CIPHER_SUITE_WEP104) && key->keyidx != 0) return -EOPNOTSUPP; /* * Pairwise key will always be entry 0, but this * could collide with a shared key on the same * position... */ mask = TXRX_CSR0_KEY_ID.bit_mask; reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR0); curr_cipher = rt2x00_get_field16(reg, TXRX_CSR0_ALGORITHM); reg &= mask; if (reg && reg == mask) return -ENOSPC; reg = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID); key->hw_key_idx += reg ? ffz(reg) : 0; /* * Hardware requires that all keys use the same cipher * (e.g. TKIP-only, AES-only, but not TKIP+AES). * If this is not the first key, compare the cipher with the * first one and fall back to SW crypto if not the same. */ if (key->hw_key_idx > 0 && crypto->cipher != curr_cipher) return -EOPNOTSUPP; rt2500usb_register_multiwrite(rt2x00dev, KEY_ENTRY(key->hw_key_idx), crypto->key, sizeof(crypto->key)); /* * The driver does not support the IV/EIV generation * in hardware. However it demands the data to be provided * both separately as well as inside the frame. * We already provided the CONFIG_CRYPTO_COPY_IV to rt2x00lib * to ensure rt2x00lib will not strip the data from the * frame after the copy, now we must tell mac80211 * to generate the IV/EIV data. */ key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; } /* * TXRX_CSR0_KEY_ID contains only single-bit fields to indicate * a particular key is valid. */ reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR0); rt2x00_set_field16(®, TXRX_CSR0_ALGORITHM, crypto->cipher); rt2x00_set_field16(®, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER); mask = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID); if (crypto->cmd == SET_KEY) mask |= 1 << key->hw_key_idx; else if (crypto->cmd == DISABLE_KEY) mask &= ~(1 << key->hw_key_idx); rt2x00_set_field16(®, TXRX_CSR0_KEY_ID, mask); rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg); return 0; } static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev, const unsigned int filter_flags) { u16 reg; /* * Start configuration steps. * Note that the version error will always be dropped * and broadcast frames will always be accepted since * there is no filter for it at this time. */ reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR2); rt2x00_set_field16(®, TXRX_CSR2_DROP_CRC, !(filter_flags & FIF_FCSFAIL)); rt2x00_set_field16(®, TXRX_CSR2_DROP_PHYSICAL, !(filter_flags & FIF_PLCPFAIL)); rt2x00_set_field16(®, TXRX_CSR2_DROP_CONTROL, !(filter_flags & FIF_CONTROL)); rt2x00_set_field16(®, TXRX_CSR2_DROP_NOT_TO_ME, !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field16(®, TXRX_CSR2_DROP_TODS, !test_bit(CONFIG_MONITORING, &rt2x00dev->flags) && !rt2x00dev->intf_ap_count); rt2x00_set_field16(®, TXRX_CSR2_DROP_VERSION_ERROR, 1); rt2x00_set_field16(®, TXRX_CSR2_DROP_MULTICAST, !(filter_flags & FIF_ALLMULTI)); rt2x00_set_field16(®, TXRX_CSR2_DROP_BROADCAST, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg); } static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf, struct rt2x00intf_conf *conf, const unsigned int flags) { unsigned int bcn_preload; u16 reg; if (flags & CONFIG_UPDATE_TYPE) { /* * Enable beacon config */ bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR20); rt2x00_set_field16(®, TXRX_CSR20_OFFSET, bcn_preload >> 6); rt2x00_set_field16(®, TXRX_CSR20_BCN_EXPECT_WINDOW, 2 * (conf->type != NL80211_IFTYPE_STATION)); rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg); /* * Enable synchronisation. */ reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR18); rt2x00_set_field16(®, TXRX_CSR18_OFFSET, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR19); rt2x00_set_field16(®, TXRX_CSR19_TSF_SYNC, conf->sync); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); } if (flags & CONFIG_UPDATE_MAC) rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac, (3 * sizeof(__le16))); if (flags & CONFIG_UPDATE_BSSID) rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid, (3 * sizeof(__le16))); } static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_erp *erp, u32 changed) { u16 reg; if (changed & BSS_CHANGED_ERP_PREAMBLE) { reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR10); rt2x00_set_field16(®, TXRX_CSR10_AUTORESPOND_PREAMBLE, !!erp->short_preamble); rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg); } if (changed & BSS_CHANGED_BASIC_RATES) rt2500usb_register_write(rt2x00dev, TXRX_CSR11, erp->basic_rates); if (changed & BSS_CHANGED_BEACON_INT) { reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR18); rt2x00_set_field16(®, TXRX_CSR18_INTERVAL, erp->beacon_int * 4); rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg); } if (changed & BSS_CHANGED_ERP_SLOT) { rt2500usb_register_write(rt2x00dev, MAC_CSR10, erp->slot_time); rt2500usb_register_write(rt2x00dev, MAC_CSR11, erp->sifs); rt2500usb_register_write(rt2x00dev, MAC_CSR12, erp->eifs); } } static void rt2500usb_config_ant(struct rt2x00_dev *rt2x00dev, struct antenna_setup *ant) { u8 r2; u8 r14; u16 csr5; u16 csr6; /* * We should never come here because rt2x00lib is supposed * to catch this and send us the correct antenna explicitely. */ BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY || ant->tx == ANTENNA_SW_DIVERSITY); r2 = rt2500usb_bbp_read(rt2x00dev, 2); r14 = rt2500usb_bbp_read(rt2x00dev, 14); csr5 = rt2500usb_register_read(rt2x00dev, PHY_CSR5); csr6 = rt2500usb_register_read(rt2x00dev, PHY_CSR6); /* * Configure the TX antenna. */ switch (ant->tx) { case ANTENNA_HW_DIVERSITY: rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1); rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1); rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1); break; case ANTENNA_A: rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0); rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0); rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0); break; case ANTENNA_B: default: rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2); rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2); rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2); break; } /* * Configure the RX antenna. */ switch (ant->rx) { case ANTENNA_HW_DIVERSITY: rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1); break; case ANTENNA_A: rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0); break; case ANTENNA_B: default: rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2); break; } /* * RT2525E and RT5222 need to flip TX I/Q */ if (rt2x00_rf(rt2x00dev, RF2525E) || rt2x00_rf(rt2x00dev, RF5222)) { rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1); rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1); rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1); /* * RT2525E does not need RX I/Q Flip. */ if (rt2x00_rf(rt2x00dev, RF2525E)) rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0); } else { rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0); rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0); } rt2500usb_bbp_write(rt2x00dev, 2, r2); rt2500usb_bbp_write(rt2x00dev, 14, r14); rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5); rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6); } static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev, struct rf_channel *rf, const int txpower) { /* * Set TXpower. */ rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); /* * For RT2525E we should first set the channel to half band higher. */ if (rt2x00_rf(rt2x00dev, RF2525E)) { static const u32 vals[] = { 0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2, 0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba, 0x000008ba, 0x000008be, 0x000008b7, 0x00000902, 0x00000902, 0x00000906 }; rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]); if (rf->rf4) rt2500usb_rf_write(rt2x00dev, 4, rf->rf4); } rt2500usb_rf_write(rt2x00dev, 1, rf->rf1); rt2500usb_rf_write(rt2x00dev, 2, rf->rf2); rt2500usb_rf_write(rt2x00dev, 3, rf->rf3); if (rf->rf4) rt2500usb_rf_write(rt2x00dev, 4, rf->rf4); } static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev, const int txpower) { u32 rf3; rf3 = rt2x00_rf_read(rt2x00dev, 3); rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); rt2500usb_rf_write(rt2x00dev, 3, rf3); } static void rt2500usb_config_ps(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf) { enum dev_state state = (libconf->conf->flags & IEEE80211_CONF_PS) ? STATE_SLEEP : STATE_AWAKE; u16 reg; if (state == STATE_SLEEP) { reg = rt2500usb_register_read(rt2x00dev, MAC_CSR18); rt2x00_set_field16(®, MAC_CSR18_DELAY_AFTER_BEACON, rt2x00dev->beacon_int - 20); rt2x00_set_field16(®, MAC_CSR18_BEACONS_BEFORE_WAKEUP, libconf->conf->listen_interval - 1); /* We must first disable autowake before it can be enabled */ rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 0); rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg); rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 1); rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg); } else { reg = rt2500usb_register_read(rt2x00dev, MAC_CSR18); rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 0); rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg); } rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); } static void rt2500usb_config(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf, const unsigned int flags) { if (flags & IEEE80211_CONF_CHANGE_CHANNEL) rt2500usb_config_channel(rt2x00dev, &libconf->rf, libconf->conf->power_level); if ((flags & IEEE80211_CONF_CHANGE_POWER) && !(flags & IEEE80211_CONF_CHANGE_CHANNEL)) rt2500usb_config_txpower(rt2x00dev, libconf->conf->power_level); if (flags & IEEE80211_CONF_CHANGE_PS) rt2500usb_config_ps(rt2x00dev, libconf); } /* * Link tuning */ static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev, struct link_qual *qual) { u16 reg; /* * Update FCS error count from register. */ reg = rt2500usb_register_read(rt2x00dev, STA_CSR0); qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR); /* * Update False CCA count from register. */ reg = rt2500usb_register_read(rt2x00dev, STA_CSR3); qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR); } static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual) { u16 eeprom; u16 value; eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24); value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW); rt2500usb_bbp_write(rt2x00dev, 24, value); eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25); value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW); rt2500usb_bbp_write(rt2x00dev, 25, value); eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61); value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW); rt2500usb_bbp_write(rt2x00dev, 61, value); eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC); value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER); rt2500usb_bbp_write(rt2x00dev, 17, value); qual->vgc_level = value; } /* * Queue handlers. */ static void rt2500usb_start_queue(struct data_queue *queue) { struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; u16 reg; switch (queue->qid) { case QID_RX: reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR2); rt2x00_set_field16(®, TXRX_CSR2_DISABLE_RX, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg); break; case QID_BEACON: reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR19); rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 1); rt2x00_set_field16(®, TXRX_CSR19_TBCN, 1); rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 1); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); break; default: break; } } static void rt2500usb_stop_queue(struct data_queue *queue) { struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; u16 reg; switch (queue->qid) { case QID_RX: reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR2); rt2x00_set_field16(®, TXRX_CSR2_DISABLE_RX, 1); rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg); break; case QID_BEACON: reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR19); rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 0); rt2x00_set_field16(®, TXRX_CSR19_TBCN, 0); rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); break; default: break; } } /* * Initialization functions. */ static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev) { u16 reg; rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001, USB_MODE_TEST, REGISTER_TIMEOUT); rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308, 0x00f0, REGISTER_TIMEOUT); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR2); rt2x00_set_field16(®, TXRX_CSR2_DISABLE_RX, 1); rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg); rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111); rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11); reg = rt2500usb_register_read(rt2x00dev, MAC_CSR1); rt2x00_set_field16(®, MAC_CSR1_SOFT_RESET, 1); rt2x00_set_field16(®, MAC_CSR1_BBP_RESET, 1); rt2x00_set_field16(®, MAC_CSR1_HOST_READY, 0); rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg); reg = rt2500usb_register_read(rt2x00dev, MAC_CSR1); rt2x00_set_field16(®, MAC_CSR1_SOFT_RESET, 0); rt2x00_set_field16(®, MAC_CSR1_BBP_RESET, 0); rt2x00_set_field16(®, MAC_CSR1_HOST_READY, 0); rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR5); rt2x00_set_field16(®, TXRX_CSR5_BBP_ID0, 13); rt2x00_set_field16(®, TXRX_CSR5_BBP_ID0_VALID, 1); rt2x00_set_field16(®, TXRX_CSR5_BBP_ID1, 12); rt2x00_set_field16(®, TXRX_CSR5_BBP_ID1_VALID, 1); rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR6); rt2x00_set_field16(®, TXRX_CSR6_BBP_ID0, 10); rt2x00_set_field16(®, TXRX_CSR6_BBP_ID0_VALID, 1); rt2x00_set_field16(®, TXRX_CSR6_BBP_ID1, 11); rt2x00_set_field16(®, TXRX_CSR6_BBP_ID1_VALID, 1); rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR7); rt2x00_set_field16(®, TXRX_CSR7_BBP_ID0, 7); rt2x00_set_field16(®, TXRX_CSR7_BBP_ID0_VALID, 1); rt2x00_set_field16(®, TXRX_CSR7_BBP_ID1, 6); rt2x00_set_field16(®, TXRX_CSR7_BBP_ID1_VALID, 1); rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR8); rt2x00_set_field16(®, TXRX_CSR8_BBP_ID0, 5); rt2x00_set_field16(®, TXRX_CSR8_BBP_ID0_VALID, 1); rt2x00_set_field16(®, TXRX_CSR8_BBP_ID1, 0); rt2x00_set_field16(®, TXRX_CSR8_BBP_ID1_VALID, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR19); rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 0); rt2x00_set_field16(®, TXRX_CSR19_TSF_SYNC, 0); rt2x00_set_field16(®, TXRX_CSR19_TBCN, 0); rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f); rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d); if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE)) return -EBUSY; reg = rt2500usb_register_read(rt2x00dev, MAC_CSR1); rt2x00_set_field16(®, MAC_CSR1_SOFT_RESET, 0); rt2x00_set_field16(®, MAC_CSR1_BBP_RESET, 0); rt2x00_set_field16(®, MAC_CSR1_HOST_READY, 1); rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg); if (rt2x00_rev(rt2x00dev) >= RT2570_VERSION_C) { reg = rt2500usb_register_read(rt2x00dev, PHY_CSR2); rt2x00_set_field16(®, PHY_CSR2_LNA, 0); } else { reg = 0; rt2x00_set_field16(®, PHY_CSR2_LNA, 1); rt2x00_set_field16(®, PHY_CSR2_LNA_MODE, 3); } rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg); rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002); rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053); rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee); rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000); reg = rt2500usb_register_read(rt2x00dev, MAC_CSR8); rt2x00_set_field16(®, MAC_CSR8_MAX_FRAME_UNIT, rt2x00dev->rx->data_size); rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR0); rt2x00_set_field16(®, TXRX_CSR0_ALGORITHM, CIPHER_NONE); rt2x00_set_field16(®, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER); rt2x00_set_field16(®, TXRX_CSR0_KEY_ID, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg); reg = rt2500usb_register_read(rt2x00dev, MAC_CSR18); rt2x00_set_field16(®, MAC_CSR18_DELAY_AFTER_BEACON, 90); rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg); reg = rt2500usb_register_read(rt2x00dev, PHY_CSR4); rt2x00_set_field16(®, PHY_CSR4_LOW_RF_LE, 1); rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg); reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR1); rt2x00_set_field16(®, TXRX_CSR1_AUTO_SEQUENCE, 1); rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg); return 0; } static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev) { unsigned int i; u8 value; for (i = 0; i < REGISTER_USB_BUSY_COUNT; i++) { value = rt2500usb_bbp_read(rt2x00dev, 0); if ((value != 0xff) && (value != 0x00)) return 0; udelay(REGISTER_BUSY_DELAY); } rt2x00_err(rt2x00dev, "BBP register access failed, aborting\n"); return -EACCES; } static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev) { unsigned int i; u16 eeprom; u8 value; u8 reg_id; if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev))) return -EACCES; rt2500usb_bbp_write(rt2x00dev, 3, 0x02); rt2500usb_bbp_write(rt2x00dev, 4, 0x19); rt2500usb_bbp_write(rt2x00dev, 14, 0x1c); rt2500usb_bbp_write(rt2x00dev, 15, 0x30); rt2500usb_bbp_write(rt2x00dev, 16, 0xac); rt2500usb_bbp_write(rt2x00dev, 18, 0x18); rt2500usb_bbp_write(rt2x00dev, 19, 0xff); rt2500usb_bbp_write(rt2x00dev, 20, 0x1e); rt2500usb_bbp_write(rt2x00dev, 21, 0x08); rt2500usb_bbp_write(rt2x00dev, 22, 0x08); rt2500usb_bbp_write(rt2x00dev, 23, 0x08); rt2500usb_bbp_write(rt2x00dev, 24, 0x80); rt2500usb_bbp_write(rt2x00dev, 25, 0x50); rt2500usb_bbp_write(rt2x00dev, 26, 0x08); rt2500usb_bbp_write(rt2x00dev, 27, 0x23); rt2500usb_bbp_write(rt2x00dev, 30, 0x10); rt2500usb_bbp_write(rt2x00dev, 31, 0x2b); rt2500usb_bbp_write(rt2x00dev, 32, 0xb9); rt2500usb_bbp_write(rt2x00dev, 34, 0x12); rt2500usb_bbp_write(rt2x00dev, 35, 0x50); rt2500usb_bbp_write(rt2x00dev, 39, 0xc4); rt2500usb_bbp_write(rt2x00dev, 40, 0x02); rt2500usb_bbp_write(rt2x00dev, 41, 0x60); rt2500usb_bbp_write(rt2x00dev, 53, 0x10); rt2500usb_bbp_write(rt2x00dev, 54, 0x18); rt2500usb_bbp_write(rt2x00dev, 56, 0x08); rt2500usb_bbp_write(rt2x00dev, 57, 0x10); rt2500usb_bbp_write(rt2x00dev, 58, 0x08); rt2500usb_bbp_write(rt2x00dev, 61, 0x60); rt2500usb_bbp_write(rt2x00dev, 62, 0x10); rt2500usb_bbp_write(rt2x00dev, 75, 0xff); for (i = 0; i < EEPROM_BBP_SIZE; i++) { eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i); if (eeprom != 0xffff && eeprom != 0x0000) { reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID); value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE); rt2500usb_bbp_write(rt2x00dev, reg_id, value); } } return 0; } /* * Device state switch handlers. */ static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev) { /* * Initialize all registers. */ if (unlikely(rt2500usb_init_registers(rt2x00dev) || rt2500usb_init_bbp(rt2x00dev))) return -EIO; return 0; } static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev) { rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121); rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121); /* * Disable synchronisation. */ rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0); rt2x00usb_disable_radio(rt2x00dev); } static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state) { u16 reg; u16 reg2; unsigned int i; bool put_to_sleep; u8 bbp_state; u8 rf_state; put_to_sleep = (state != STATE_AWAKE); reg = 0; rt2x00_set_field16(®, MAC_CSR17_BBP_DESIRE_STATE, state); rt2x00_set_field16(®, MAC_CSR17_RF_DESIRE_STATE, state); rt2x00_set_field16(®, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep); rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg); rt2x00_set_field16(®, MAC_CSR17_SET_STATE, 1); rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg); /* * Device is not guaranteed to be in the requested state yet. * We must wait until the register indicates that the * device has entered the correct state. */ for (i = 0; i < REGISTER_USB_BUSY_COUNT; i++) { reg2 = rt2500usb_register_read(rt2x00dev, MAC_CSR17); bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE); rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE); if (bbp_state == state && rf_state == state) return 0; rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg); msleep(30); } return -EBUSY; } static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev, enum dev_state state) { int retval = 0; switch (state) { case STATE_RADIO_ON: retval = rt2500usb_enable_radio(rt2x00dev); break; case STATE_RADIO_OFF: rt2500usb_disable_radio(rt2x00dev); break; case STATE_RADIO_IRQ_ON: case STATE_RADIO_IRQ_OFF: /* No support, but no error either */ break; case STATE_DEEP_SLEEP: case STATE_SLEEP: case STATE_STANDBY: case STATE_AWAKE: retval = rt2500usb_set_state(rt2x00dev, state); break; default: retval = -ENOTSUPP; break; } if (unlikely(retval)) rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n", state, retval); return retval; } /* * TX descriptor initialization */ static void rt2500usb_write_tx_desc(struct queue_entry *entry, struct txentry_desc *txdesc) { struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); __le32 *txd = (__le32 *) entry->skb->data; u32 word; /* * Start writing the descriptor words. */ word = rt2x00_desc_read(txd, 0); rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit); rt2x00_set_field32(&word, TXD_W0_MORE_FRAG, test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags)); rt2x00_set_field32(&word, TXD_W0_ACK, test_bit(ENTRY_TXD_ACK, &txdesc->flags)); rt2x00_set_field32(&word, TXD_W0_TIMESTAMP, test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags)); rt2x00_set_field32(&word, TXD_W0_OFDM, (txdesc->rate_mode == RATE_MODE_OFDM)); rt2x00_set_field32(&word, TXD_W0_NEW_SEQ, test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags)); rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->u.plcp.ifs); rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, txdesc->length); rt2x00_set_field32(&word, TXD_W0_CIPHER, !!txdesc->cipher); rt2x00_set_field32(&word, TXD_W0_KEY_ID, txdesc->key_idx); rt2x00_desc_write(txd, 0, word); word = rt2x00_desc_read(txd, 1); rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, txdesc->iv_offset); rt2x00_set_field32(&word, TXD_W1_AIFS, entry->queue->aifs); rt2x00_set_field32(&word, TXD_W1_CWMIN, entry->queue->cw_min); rt2x00_set_field32(&word, TXD_W1_CWMAX, entry->queue->cw_max); rt2x00_desc_write(txd, 1, word); word = rt2x00_desc_read(txd, 2); rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->u.plcp.signal); rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->u.plcp.service); rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->u.plcp.length_low); rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->u.plcp.length_high); rt2x00_desc_write(txd, 2, word); if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags)) { _rt2x00_desc_write(txd, 3, skbdesc->iv[0]); _rt2x00_desc_write(txd, 4, skbdesc->iv[1]); } /* * Register descriptor details in skb frame descriptor. */ skbdesc->flags |= SKBDESC_DESC_IN_SKB; skbdesc->desc = txd; skbdesc->desc_len = TXD_DESC_SIZE; } /* * TX data initialization */ static void rt2500usb_beacondone(struct urb *urb); static void rt2500usb_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev); struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data; int pipe = usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint); int length; u16 reg, reg0; /* * Disable beaconing while we are reloading the beacon data, * otherwise we might be sending out invalid data. */ reg = rt2500usb_register_read(rt2x00dev, TXRX_CSR19); rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); /* * Add space for the descriptor in front of the skb. */ skb_push(entry->skb, TXD_DESC_SIZE); memset(entry->skb->data, 0, TXD_DESC_SIZE); /* * Write the TX descriptor for the beacon. */ rt2500usb_write_tx_desc(entry, txdesc); /* * Dump beacon to userspace through debugfs. */ rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry); /* * USB devices cannot blindly pass the skb->len as the * length of the data to usb_fill_bulk_urb. Pass the skb * to the driver to determine what the length should be. */ length = rt2x00dev->ops->lib->get_tx_data_len(entry); usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe, entry->skb->data, length, rt2500usb_beacondone, entry); /* * Second we need to create the guardian byte. * We only need a single byte, so lets recycle * the 'flags' field we are not using for beacons. */ bcn_priv->guardian_data = 0; usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe, &bcn_priv->guardian_data, 1, rt2500usb_beacondone, entry); /* * Send out the guardian byte. */ usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC); /* * Enable beaconing again. */ rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 1); rt2x00_set_field16(®, TXRX_CSR19_TBCN, 1); reg0 = reg; rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 1); /* * Beacon generation will fail initially. * To prevent this we need to change the TXRX_CSR19 * register several times (reg0 is the same as reg * except for TXRX_CSR19_BEACON_GEN, which is 0 in reg0 * and 1 in reg). */ rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg0); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg0); rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); } static int rt2500usb_get_tx_data_len(struct queue_entry *entry) { int length; /* * The length _must_ be a multiple of 2, * but it must _not_ be a multiple of the USB packet size. */ length = roundup(entry->skb->len, 2); length += (2 * !(length % entry->queue->usb_maxpacket)); return length; } /* * RX control handlers */ static void rt2500usb_fill_rxdone(struct queue_entry *entry, struct rxdone_entry_desc *rxdesc) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct queue_entry_priv_usb *entry_priv = entry->priv_data; struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); __le32 *rxd = (__le32 *)(entry->skb->data + (entry_priv->urb->actual_length - entry->queue->desc_size)); u32 word0; u32 word1; /* * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of * frame data in rt2x00usb. */ memcpy(skbdesc->desc, rxd, skbdesc->desc_len); rxd = (__le32 *)skbdesc->desc; /* * It is now safe to read the descriptor on all architectures. */ word0 = rt2x00_desc_read(rxd, 0); word1 = rt2x00_desc_read(rxd, 1); if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR)) rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC; if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR)) rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC; rxdesc->cipher = rt2x00_get_field32(word0, RXD_W0_CIPHER); if (rt2x00_get_field32(word0, RXD_W0_CIPHER_ERROR)) rxdesc->cipher_status = RX_CRYPTO_FAIL_KEY; if (rxdesc->cipher != CIPHER_NONE) { rxdesc->iv[0] = _rt2x00_desc_read(rxd, 2); rxdesc->iv[1] = _rt2x00_desc_read(rxd, 3); rxdesc->dev_flags |= RXDONE_CRYPTO_IV; /* ICV is located at the end of frame */ rxdesc->flags |= RX_FLAG_MMIC_STRIPPED; if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS) rxdesc->flags |= RX_FLAG_DECRYPTED; else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC) rxdesc->flags |= RX_FLAG_MMIC_ERROR; } /* * Obtain the status about this packet. * When frame was received with an OFDM bitrate, * the signal is the PLCP value. If it was received with * a CCK bitrate the signal is the rate in 100kbit/s. */ rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL); rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) - rt2x00dev->rssi_offset; rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT); if (rt2x00_get_field32(word0, RXD_W0_OFDM)) rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP; else rxdesc->dev_flags |= RXDONE_SIGNAL_BITRATE; if (rt2x00_get_field32(word0, RXD_W0_MY_BSS)) rxdesc->dev_flags |= RXDONE_MY_BSS; /* * Adjust the skb memory window to the frame boundaries. */ skb_trim(entry->skb, rxdesc->size); } /* * Interrupt functions. */ static void rt2500usb_beacondone(struct urb *urb) { struct queue_entry *entry = (struct queue_entry *)urb->context; struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data; if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags)) return; /* * Check if this was the guardian beacon, * if that was the case we need to send the real beacon now. * Otherwise we should free the sk_buffer, the device * should be doing the rest of the work now. */ if (bcn_priv->guardian_urb == urb) { usb_submit_urb(bcn_priv->urb, GFP_ATOMIC); } else if (bcn_priv->urb == urb) { dev_kfree_skb(entry->skb); entry->skb = NULL; } } /* * Device probe functions. */ static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev) { u16 word; u8 *mac; u8 bbp; rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE); /* * Start validation of the data that has been read. */ mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0); rt2x00lib_set_mac_address(rt2x00dev, mac); word = rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2); rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT, ANTENNA_SW_DIVERSITY); rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT, ANTENNA_SW_DIVERSITY); rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE, LED_MODE_DEFAULT); rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0); rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0); rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522); rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word); rt2x00_eeprom_dbg(rt2x00dev, "Antenna: 0x%04x\n", word); } word = rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0); rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0); rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0); rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word); rt2x00_eeprom_dbg(rt2x00dev, "NIC: 0x%04x\n", word); } word = rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI, DEFAULT_RSSI_OFFSET); rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word); rt2x00_eeprom_dbg(rt2x00dev, "Calibrate offset: 0x%04x\n", word); } word = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45); rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word); rt2x00_eeprom_dbg(rt2x00dev, "BBPtune: 0x%04x\n", word); } /* * Switch lower vgc bound to current BBP R17 value, * lower the value a bit for better quality. */ bbp = rt2500usb_bbp_read(rt2x00dev, 17); bbp -= 6; word = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40); rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp); rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word); rt2x00_eeprom_dbg(rt2x00dev, "BBPtune vgc: 0x%04x\n", word); } else { rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp); rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word); } word = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48); rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41); rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word); rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r17: 0x%04x\n", word); } word = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40); rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80); rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word); rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r24: 0x%04x\n", word); } word = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40); rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50); rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word); rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r25: 0x%04x\n", word); } word = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61); if (word == 0xffff) { rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60); rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d); rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word); rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r61: 0x%04x\n", word); } return 0; } static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev) { u16 reg; u16 value; u16 eeprom; /* * Read EEPROM word for configuration. */ eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA); /* * Identify RF chipset. */ value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE); reg = rt2500usb_register_read(rt2x00dev, MAC_CSR0); rt2x00_set_chip(rt2x00dev, RT2570, value, reg); if (((reg & 0xfff0) != 0) || ((reg & 0x0000000f) == 0)) { rt2x00_err(rt2x00dev, "Invalid RT chipset detected\n"); return -ENODEV; } if (!rt2x00_rf(rt2x00dev, RF2522) && !rt2x00_rf(rt2x00dev, RF2523) && !rt2x00_rf(rt2x00dev, RF2524) && !rt2x00_rf(rt2x00dev, RF2525) && !rt2x00_rf(rt2x00dev, RF2525E) && !rt2x00_rf(rt2x00dev, RF5222)) { rt2x00_err(rt2x00dev, "Invalid RF chipset detected\n"); return -ENODEV; } /* * Identify default antenna configuration. */ rt2x00dev->default_ant.tx = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT); rt2x00dev->default_ant.rx = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT); /* * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead. * I am not 100% sure about this, but the legacy drivers do not * indicate antenna swapping in software is required when * diversity is enabled. */ if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY; if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY) rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY; /* * Store led mode, for correct led behaviour. */ #ifdef CONFIG_RT2X00_LIB_LEDS value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE); rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO); if (value == LED_MODE_TXRX_ACTIVITY || value == LED_MODE_DEFAULT || value == LED_MODE_ASUS) rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_ACTIVITY); #endif /* CONFIG_RT2X00_LIB_LEDS */ /* * Detect if this device has an hardware controlled radio. */ if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO)) __set_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags); /* * Read the RSSI <-> dBm offset information. */ eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET); rt2x00dev->rssi_offset = rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI); return 0; } /* * RF value list for RF2522 * Supports: 2.4 GHz */ static const struct rf_channel rf_vals_bg_2522[] = { { 1, 0x00002050, 0x000c1fda, 0x00000101, 0 }, { 2, 0x00002050, 0x000c1fee, 0x00000101, 0 }, { 3, 0x00002050, 0x000c2002, 0x00000101, 0 }, { 4, 0x00002050, 0x000c2016, 0x00000101, 0 }, { 5, 0x00002050, 0x000c202a, 0x00000101, 0 }, { 6, 0x00002050, 0x000c203e, 0x00000101, 0 }, { 7, 0x00002050, 0x000c2052, 0x00000101, 0 }, { 8, 0x00002050, 0x000c2066, 0x00000101, 0 }, { 9, 0x00002050, 0x000c207a, 0x00000101, 0 }, { 10, 0x00002050, 0x000c208e, 0x00000101, 0 }, { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 }, { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 }, { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 }, { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 }, }; /* * RF value list for RF2523 * Supports: 2.4 GHz */ static const struct rf_channel rf_vals_bg_2523[] = { { 1, 0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b }, { 2, 0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b }, { 3, 0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b }, { 4, 0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b }, { 5, 0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b }, { 6, 0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b }, { 7, 0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b }, { 8, 0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b }, { 9, 0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b }, { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b }, { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b }, { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b }, { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b }, { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 }, }; /* * RF value list for RF2524 * Supports: 2.4 GHz */ static const struct rf_channel rf_vals_bg_2524[] = { { 1, 0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b }, { 2, 0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b }, { 3, 0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b }, { 4, 0x00032020, 0x00000caa, 0x00000101, 0x00000a1b }, { 5, 0x00032020, 0x00000cae, 0x00000101, 0x00000a1b }, { 6, 0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b }, { 7, 0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b }, { 8, 0x00032020, 0x00000cba, 0x00000101, 0x00000a1b }, { 9, 0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b }, { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b }, { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b }, { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b }, { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b }, { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 }, }; /* * RF value list for RF2525 * Supports: 2.4 GHz */ static const struct rf_channel rf_vals_bg_2525[] = { { 1, 0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b }, { 2, 0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b }, { 3, 0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b }, { 4, 0x00022020, 0x00080caa, 0x00060111, 0x00000a1b }, { 5, 0x00022020, 0x00080cae, 0x00060111, 0x00000a1b }, { 6, 0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b }, { 7, 0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b }, { 8, 0x00022020, 0x00080cba, 0x00060111, 0x00000a1b }, { 9, 0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b }, { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b }, { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b }, { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b }, { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b }, { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 }, }; /* * RF value list for RF2525e * Supports: 2.4 GHz */ static const struct rf_channel rf_vals_bg_2525e[] = { { 1, 0x00022010, 0x0000089a, 0x00060111, 0x00000e1b }, { 2, 0x00022010, 0x0000089e, 0x00060111, 0x00000e07 }, { 3, 0x00022010, 0x0000089e, 0x00060111, 0x00000e1b }, { 4, 0x00022010, 0x000008a2, 0x00060111, 0x00000e07 }, { 5, 0x00022010, 0x000008a2, 0x00060111, 0x00000e1b }, { 6, 0x00022010, 0x000008a6, 0x00060111, 0x00000e07 }, { 7, 0x00022010, 0x000008a6, 0x00060111, 0x00000e1b }, { 8, 0x00022010, 0x000008aa, 0x00060111, 0x00000e07 }, { 9, 0x00022010, 0x000008aa, 0x00060111, 0x00000e1b }, { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 }, { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b }, { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 }, { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b }, { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 }, }; /* * RF value list for RF5222 * Supports: 2.4 GHz & 5.2 GHz */ static const struct rf_channel rf_vals_5222[] = { { 1, 0x00022020, 0x00001136, 0x00000101, 0x00000a0b }, { 2, 0x00022020, 0x0000113a, 0x00000101, 0x00000a0b }, { 3, 0x00022020, 0x0000113e, 0x00000101, 0x00000a0b }, { 4, 0x00022020, 0x00001182, 0x00000101, 0x00000a0b }, { 5, 0x00022020, 0x00001186, 0x00000101, 0x00000a0b }, { 6, 0x00022020, 0x0000118a, 0x00000101, 0x00000a0b }, { 7, 0x00022020, 0x0000118e, 0x00000101, 0x00000a0b }, { 8, 0x00022020, 0x00001192, 0x00000101, 0x00000a0b }, { 9, 0x00022020, 0x00001196, 0x00000101, 0x00000a0b }, { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b }, { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b }, { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b }, { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b }, { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b }, /* 802.11 UNI / HyperLan 2 */ { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f }, { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f }, { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f }, { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f }, { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f }, { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f }, { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f }, { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f }, /* 802.11 HyperLan 2 */ { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f }, { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f }, { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f }, { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f }, { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f }, { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f }, { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f }, { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f }, { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f }, { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f }, /* 802.11 UNII */ { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f }, { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 }, { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 }, { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 }, { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 }, }; static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev) { struct hw_mode_spec *spec = &rt2x00dev->spec; struct channel_info *info; u8 *tx_power; unsigned int i; /* * Initialize all hw fields. * * Don't set IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING unless we are * capable of sending the buffered frames out after the DTIM * transmission using rt2x00lib_beacondone. This will send out * multicast and broadcast traffic immediately instead of buffering it * infinitly and thus dropping it after some time. */ ieee80211_hw_set(rt2x00dev->hw, PS_NULLFUNC_STACK); ieee80211_hw_set(rt2x00dev->hw, SUPPORTS_PS); ieee80211_hw_set(rt2x00dev->hw, RX_INCLUDES_FCS); ieee80211_hw_set(rt2x00dev->hw, SIGNAL_DBM); /* * Disable powersaving as default. */ rt2x00dev->hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev); SET_IEEE80211_PERM_ADDR(rt2x00dev->hw, rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0)); /* * Initialize hw_mode information. */ spec->supported_bands = SUPPORT_BAND_2GHZ; spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM; if (rt2x00_rf(rt2x00dev, RF2522)) { spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522); spec->channels = rf_vals_bg_2522; } else if (rt2x00_rf(rt2x00dev, RF2523)) { spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523); spec->channels = rf_vals_bg_2523; } else if (rt2x00_rf(rt2x00dev, RF2524)) { spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524); spec->channels = rf_vals_bg_2524; } else if (rt2x00_rf(rt2x00dev, RF2525)) { spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525); spec->channels = rf_vals_bg_2525; } else if (rt2x00_rf(rt2x00dev, RF2525E)) { spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e); spec->channels = rf_vals_bg_2525e; } else if (rt2x00_rf(rt2x00dev, RF5222)) { spec->supported_bands |= SUPPORT_BAND_5GHZ; spec->num_channels = ARRAY_SIZE(rf_vals_5222); spec->channels = rf_vals_5222; } /* * Create channel information array */ info = kcalloc(spec->num_channels, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; spec->channels_info = info; tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START); for (i = 0; i < 14; i++) { info[i].max_power = MAX_TXPOWER; info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]); } if (spec->num_channels > 14) { for (i = 14; i < spec->num_channels; i++) { info[i].max_power = MAX_TXPOWER; info[i].default_power1 = DEFAULT_TXPOWER; } } return 0; } static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev) { int retval; u16 reg; /* * Allocate eeprom data. */ retval = rt2500usb_validate_eeprom(rt2x00dev); if (retval) return retval; retval = rt2500usb_init_eeprom(rt2x00dev); if (retval) return retval; /* * Enable rfkill polling by setting GPIO direction of the * rfkill switch GPIO pin correctly. */ reg = rt2500usb_register_read(rt2x00dev, MAC_CSR19); rt2x00_set_field16(®, MAC_CSR19_DIR0, 0); rt2500usb_register_write(rt2x00dev, MAC_CSR19, reg); /* * Initialize hw specifications. */ retval = rt2500usb_probe_hw_mode(rt2x00dev); if (retval) return retval; /* * This device requires the atim queue */ __set_bit(REQUIRE_ATIM_QUEUE, &rt2x00dev->cap_flags); __set_bit(REQUIRE_BEACON_GUARD, &rt2x00dev->cap_flags); if (!modparam_nohwcrypt) { __set_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags); __set_bit(REQUIRE_COPY_IV, &rt2x00dev->cap_flags); } __set_bit(REQUIRE_SW_SEQNO, &rt2x00dev->cap_flags); __set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags); /* * Set the rssi offset. */ rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET; return 0; } static const struct ieee80211_ops rt2500usb_mac80211_ops = { .add_chanctx = ieee80211_emulate_add_chanctx, .remove_chanctx = ieee80211_emulate_remove_chanctx, .change_chanctx = ieee80211_emulate_change_chanctx, .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, .tx = rt2x00mac_tx, .wake_tx_queue = ieee80211_handle_wake_tx_queue, .start = rt2x00mac_start, .stop = rt2x00mac_stop, .add_interface = rt2x00mac_add_interface, .remove_interface = rt2x00mac_remove_interface, .config = rt2x00mac_config, .configure_filter = rt2x00mac_configure_filter, .set_tim = rt2x00mac_set_tim, .set_key = rt2x00mac_set_key, .sw_scan_start = rt2x00mac_sw_scan_start, .sw_scan_complete = rt2x00mac_sw_scan_complete, .get_stats = rt2x00mac_get_stats, .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2x00mac_conf_tx, .rfkill_poll = rt2x00mac_rfkill_poll, .flush = rt2x00mac_flush, .set_antenna = rt2x00mac_set_antenna, .get_antenna = rt2x00mac_get_antenna, .get_ringparam = rt2x00mac_get_ringparam, .tx_frames_pending = rt2x00mac_tx_frames_pending, }; static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = { .probe_hw = rt2500usb_probe_hw, .initialize = rt2x00usb_initialize, .uninitialize = rt2x00usb_uninitialize, .clear_entry = rt2x00usb_clear_entry, .set_device_state = rt2500usb_set_device_state, .rfkill_poll = rt2500usb_rfkill_poll, .link_stats = rt2500usb_link_stats, .reset_tuner = rt2500usb_reset_tuner, .watchdog = rt2x00usb_watchdog, .start_queue = rt2500usb_start_queue, .kick_queue = rt2x00usb_kick_queue, .stop_queue = rt2500usb_stop_queue, .flush_queue = rt2x00usb_flush_queue, .write_tx_desc = rt2500usb_write_tx_desc, .write_beacon = rt2500usb_write_beacon, .get_tx_data_len = rt2500usb_get_tx_data_len, .fill_rxdone = rt2500usb_fill_rxdone, .config_shared_key = rt2500usb_config_key, .config_pairwise_key = rt2500usb_config_key, .config_filter = rt2500usb_config_filter, .config_intf = rt2500usb_config_intf, .config_erp = rt2500usb_config_erp, .config_ant = rt2500usb_config_ant, .config = rt2500usb_config, }; static void rt2500usb_queue_init(struct data_queue *queue) { switch (queue->qid) { case QID_RX: queue->limit = 32; queue->data_size = DATA_FRAME_SIZE; queue->desc_size = RXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_usb); break; case QID_AC_VO: case QID_AC_VI: case QID_AC_BE: case QID_AC_BK: queue->limit = 32; queue->data_size = DATA_FRAME_SIZE; queue->desc_size = TXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_usb); break; case QID_BEACON: queue->limit = 1; queue->data_size = MGMT_FRAME_SIZE; queue->desc_size = TXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_usb_bcn); break; case QID_ATIM: queue->limit = 8; queue->data_size = DATA_FRAME_SIZE; queue->desc_size = TXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_usb); break; default: BUG(); break; } } static const struct rt2x00_ops rt2500usb_ops = { .name = KBUILD_MODNAME, .max_ap_intf = 1, .eeprom_size = EEPROM_SIZE, .rf_size = RF_SIZE, .tx_queues = NUM_TX_QUEUES, .queue_init = rt2500usb_queue_init, .lib = &rt2500usb_rt2x00_ops, .hw = &rt2500usb_mac80211_ops, #ifdef CONFIG_RT2X00_LIB_DEBUGFS .debugfs = &rt2500usb_rt2x00debug, #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ }; /* * rt2500usb module information. */ static const struct usb_device_id rt2500usb_device_table[] = { /* ASUS */ { USB_DEVICE(0x0b05, 0x1706) }, { USB_DEVICE(0x0b05, 0x1707) }, /* Belkin */ { USB_DEVICE(0x050d, 0x7050) }, /* FCC ID: K7SF5D7050A ver. 2.x */ { USB_DEVICE(0x050d, 0x7051) }, /* Cisco Systems */ { USB_DEVICE(0x13b1, 0x000d) }, { USB_DEVICE(0x13b1, 0x0011) }, { USB_DEVICE(0x13b1, 0x001a) }, /* Conceptronic */ { USB_DEVICE(0x14b2, 0x3c02) }, /* D-LINK */ { USB_DEVICE(0x2001, 0x3c00) }, /* Gigabyte */ { USB_DEVICE(0x1044, 0x8001) }, { USB_DEVICE(0x1044, 0x8007) }, /* Hercules */ { USB_DEVICE(0x06f8, 0xe000) }, /* Melco */ { USB_DEVICE(0x0411, 0x005e) }, { USB_DEVICE(0x0411, 0x0066) }, { USB_DEVICE(0x0411, 0x0067) }, { USB_DEVICE(0x0411, 0x008b) }, { USB_DEVICE(0x0411, 0x0097) }, /* MSI */ { USB_DEVICE(0x0db0, 0x6861) }, { USB_DEVICE(0x0db0, 0x6865) }, { USB_DEVICE(0x0db0, 0x6869) }, /* Ralink */ { USB_DEVICE(0x148f, 0x1706) }, { USB_DEVICE(0x148f, 0x2570) }, { USB_DEVICE(0x148f, 0x9020) }, /* Sagem */ { USB_DEVICE(0x079b, 0x004b) }, /* Siemens */ { USB_DEVICE(0x0681, 0x3c06) }, /* SMC */ { USB_DEVICE(0x0707, 0xee13) }, /* Spairon */ { USB_DEVICE(0x114b, 0x0110) }, /* SURECOM */ { USB_DEVICE(0x0769, 0x11f3) }, /* Trust */ { USB_DEVICE(0x0eb0, 0x9020) }, /* VTech */ { USB_DEVICE(0x0f88, 0x3012) }, /* Zinwell */ { USB_DEVICE(0x5a57, 0x0260) }, { 0, } }; MODULE_AUTHOR(DRV_PROJECT); MODULE_VERSION(DRV_VERSION); MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver."); MODULE_DEVICE_TABLE(usb, rt2500usb_device_table); MODULE_LICENSE("GPL"); static int rt2500usb_probe(struct usb_interface *usb_intf, const struct usb_device_id *id) { return rt2x00usb_probe(usb_intf, &rt2500usb_ops); } static struct usb_driver rt2500usb_driver = { .name = KBUILD_MODNAME, .id_table = rt2500usb_device_table, .probe = rt2500usb_probe, .disconnect = rt2x00usb_disconnect, .suspend = rt2x00usb_suspend, .resume = rt2x00usb_resume, .reset_resume = rt2x00usb_resume, .disable_hub_initiated_lpm = 1, }; module_usb_driver(rt2500usb_driver); |
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This function * must be called while holding an active reference. */ static const struct sysfs_ops *sysfs_file_ops(struct kernfs_node *kn) { struct kobject *kobj = sysfs_file_kobj(kn); if (kn->flags & KERNFS_LOCKDEP) lockdep_assert_held(kn); return kobj->ktype ? kobj->ktype->sysfs_ops : NULL; } /* * Reads on sysfs are handled through seq_file, which takes care of hairy * details like buffering and seeking. The following function pipes * sysfs_ops->show() result through seq_file. */ static int sysfs_kf_seq_show(struct seq_file *sf, void *v) { struct kernfs_open_file *of = sf->private; struct kobject *kobj = sysfs_file_kobj(of->kn); const struct sysfs_ops *ops = sysfs_file_ops(of->kn); ssize_t count; char *buf; if (WARN_ON_ONCE(!ops->show)) return -EINVAL; /* acquire buffer and ensure that it's >= PAGE_SIZE and clear */ count = seq_get_buf(sf, &buf); if (count < PAGE_SIZE) { seq_commit(sf, -1); return 0; } memset(buf, 0, PAGE_SIZE); count = ops->show(kobj, of->kn->priv, buf); if (count < 0) return count; /* * The code works fine with PAGE_SIZE return but it's likely to * indicate truncated result or overflow in normal use cases. */ if (count >= (ssize_t)PAGE_SIZE) { printk("fill_read_buffer: %pS returned bad count\n", ops->show); /* Try to struggle along */ count = PAGE_SIZE - 1; } seq_commit(sf, count); return 0; } static ssize_t sysfs_kf_bin_read(struct kernfs_open_file *of, char *buf, size_t count, loff_t pos) { const struct bin_attribute *battr = of->kn->priv; struct kobject *kobj = sysfs_file_kobj(of->kn); loff_t size = file_inode(of->file)->i_size; if (!count) return 0; if (size) { if (pos >= size) return 0; if (pos + count > size) count = size - pos; } if (!battr->read) return -EIO; return battr->read(of->file, kobj, battr, buf, pos, count); } /* kernfs read callback for regular sysfs files with pre-alloc */ static ssize_t sysfs_kf_read(struct kernfs_open_file *of, char *buf, size_t count, loff_t pos) { const struct sysfs_ops *ops = sysfs_file_ops(of->kn); struct kobject *kobj = sysfs_file_kobj(of->kn); ssize_t len; /* * If buf != of->prealloc_buf, we don't know how * large it is, so cannot safely pass it to ->show */ if (WARN_ON_ONCE(buf != of->prealloc_buf)) return 0; len = ops->show(kobj, of->kn->priv, buf); if (len < 0) return len; if (pos) { if (len <= pos) return 0; len -= pos; memmove(buf, buf + pos, len); } return min_t(ssize_t, count, len); } /* kernfs write callback for regular sysfs files */ static ssize_t sysfs_kf_write(struct kernfs_open_file *of, char *buf, size_t count, loff_t pos) { const struct sysfs_ops *ops = sysfs_file_ops(of->kn); struct kobject *kobj = sysfs_file_kobj(of->kn); if (!count) return 0; return ops->store(kobj, of->kn->priv, buf, count); } /* kernfs write callback for bin sysfs files */ static ssize_t sysfs_kf_bin_write(struct kernfs_open_file *of, char *buf, size_t count, loff_t pos) { const struct bin_attribute *battr = of->kn->priv; struct kobject *kobj = sysfs_file_kobj(of->kn); loff_t size = file_inode(of->file)->i_size; if (size) { if (size <= pos) return -EFBIG; count = min_t(ssize_t, count, size - pos); } if (!count) return 0; if (!battr->write) return -EIO; return battr->write(of->file, kobj, battr, buf, pos, count); } static int sysfs_kf_bin_mmap(struct kernfs_open_file *of, struct vm_area_struct *vma) { const struct bin_attribute *battr = of->kn->priv; struct kobject *kobj = sysfs_file_kobj(of->kn); return battr->mmap(of->file, kobj, battr, vma); } static loff_t sysfs_kf_bin_llseek(struct kernfs_open_file *of, loff_t offset, int whence) { const struct bin_attribute *battr = of->kn->priv; struct kobject *kobj = sysfs_file_kobj(of->kn); if (battr->llseek) return battr->llseek(of->file, kobj, battr, offset, whence); else return generic_file_llseek(of->file, offset, whence); } static int sysfs_kf_bin_open(struct kernfs_open_file *of) { const struct bin_attribute *battr = of->kn->priv; if (battr->f_mapping) of->file->f_mapping = battr->f_mapping(); return 0; } void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr) { struct kernfs_node *kn = kobj->sd, *tmp; if (kn && dir) kn = kernfs_find_and_get(kn, dir); else kernfs_get(kn); if (kn && attr) { tmp = kernfs_find_and_get(kn, attr); kernfs_put(kn); kn = tmp; } if (kn) { kernfs_notify(kn); kernfs_put(kn); } } EXPORT_SYMBOL_GPL(sysfs_notify); static const struct kernfs_ops sysfs_file_kfops_empty = { }; static const struct kernfs_ops sysfs_file_kfops_ro = { .seq_show = sysfs_kf_seq_show, }; static const struct kernfs_ops sysfs_file_kfops_wo = { .write = sysfs_kf_write, }; static const struct kernfs_ops sysfs_file_kfops_rw = { .seq_show = sysfs_kf_seq_show, .write = sysfs_kf_write, }; static const struct kernfs_ops sysfs_prealloc_kfops_ro = { .read = sysfs_kf_read, .prealloc = true, }; static const struct kernfs_ops sysfs_prealloc_kfops_wo = { .write = sysfs_kf_write, .prealloc = true, }; static const struct kernfs_ops sysfs_prealloc_kfops_rw = { .read = sysfs_kf_read, .write = sysfs_kf_write, .prealloc = true, }; static const struct kernfs_ops sysfs_bin_kfops_ro = { .read = sysfs_kf_bin_read, }; static const struct kernfs_ops sysfs_bin_kfops_wo = { .write = sysfs_kf_bin_write, }; static const struct kernfs_ops sysfs_bin_kfops_rw = { .read = sysfs_kf_bin_read, .write = sysfs_kf_bin_write, }; static const struct kernfs_ops sysfs_bin_kfops_mmap = { .read = sysfs_kf_bin_read, .write = sysfs_kf_bin_write, .mmap = sysfs_kf_bin_mmap, .open = sysfs_kf_bin_open, .llseek = sysfs_kf_bin_llseek, }; int sysfs_add_file_mode_ns(struct kernfs_node *parent, const struct attribute *attr, umode_t mode, kuid_t uid, kgid_t gid, const void *ns) { struct kobject *kobj = parent->priv; const struct sysfs_ops *sysfs_ops = kobj->ktype->sysfs_ops; struct lock_class_key *key = NULL; const struct kernfs_ops *ops = NULL; struct kernfs_node *kn; /* every kobject with an attribute needs a ktype assigned */ if (WARN(!sysfs_ops, KERN_ERR "missing sysfs attribute operations for kobject: %s\n", kobject_name(kobj))) return -EINVAL; if (mode & SYSFS_PREALLOC) { if (sysfs_ops->show && sysfs_ops->store) ops = &sysfs_prealloc_kfops_rw; else if (sysfs_ops->show) ops = &sysfs_prealloc_kfops_ro; else if (sysfs_ops->store) ops = &sysfs_prealloc_kfops_wo; } else { if (sysfs_ops->show && sysfs_ops->store) ops = &sysfs_file_kfops_rw; else if (sysfs_ops->show) ops = &sysfs_file_kfops_ro; else if (sysfs_ops->store) ops = &sysfs_file_kfops_wo; } if (!ops) ops = &sysfs_file_kfops_empty; #ifdef CONFIG_DEBUG_LOCK_ALLOC if (!attr->ignore_lockdep) key = attr->key ?: (struct lock_class_key *)&attr->skey; #endif kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid, PAGE_SIZE, ops, (void *)attr, ns, key); if (IS_ERR(kn)) { if (PTR_ERR(kn) == -EEXIST) sysfs_warn_dup(parent, attr->name); return PTR_ERR(kn); } return 0; } int sysfs_add_bin_file_mode_ns(struct kernfs_node *parent, const struct bin_attribute *battr, umode_t mode, size_t size, kuid_t uid, kgid_t gid, const void *ns) { const struct attribute *attr = &battr->attr; struct lock_class_key *key = NULL; const struct kernfs_ops *ops; struct kernfs_node *kn; if (battr->mmap) ops = &sysfs_bin_kfops_mmap; else if (battr->read && battr->write) ops = &sysfs_bin_kfops_rw; else if (battr->read) ops = &sysfs_bin_kfops_ro; else if (battr->write) ops = &sysfs_bin_kfops_wo; else ops = &sysfs_file_kfops_empty; #ifdef CONFIG_DEBUG_LOCK_ALLOC if (!attr->ignore_lockdep) key = attr->key ?: (struct lock_class_key *)&attr->skey; #endif kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid, size, ops, (void *)attr, ns, key); if (IS_ERR(kn)) { if (PTR_ERR(kn) == -EEXIST) sysfs_warn_dup(parent, attr->name); return PTR_ERR(kn); } return 0; } /** * sysfs_create_file_ns - create an attribute file for an object with custom ns * @kobj: object we're creating for * @attr: attribute descriptor * @ns: namespace the new file should belong to */ int sysfs_create_file_ns(struct kobject *kobj, const struct attribute *attr, const void *ns) { kuid_t uid; kgid_t gid; if (WARN_ON(!kobj || !kobj->sd || !attr)) return -EINVAL; kobject_get_ownership(kobj, &uid, &gid); return sysfs_add_file_mode_ns(kobj->sd, attr, attr->mode, uid, gid, ns); } EXPORT_SYMBOL_GPL(sysfs_create_file_ns); int sysfs_create_files(struct kobject *kobj, const struct attribute * const *ptr) { int err = 0; int i; for (i = 0; ptr[i] && !err; i++) err = sysfs_create_file(kobj, ptr[i]); if (err) while (--i >= 0) sysfs_remove_file(kobj, ptr[i]); return err; } EXPORT_SYMBOL_GPL(sysfs_create_files); /** * sysfs_add_file_to_group - add an attribute file to a pre-existing group. * @kobj: object we're acting for. * @attr: attribute descriptor. * @group: group name. */ int sysfs_add_file_to_group(struct kobject *kobj, const struct attribute *attr, const char *group) { struct kernfs_node *parent; kuid_t uid; kgid_t gid; int error; if (group) { parent = kernfs_find_and_get(kobj->sd, group); } else { parent = kobj->sd; kernfs_get(parent); } if (!parent) return -ENOENT; kobject_get_ownership(kobj, &uid, &gid); error = sysfs_add_file_mode_ns(parent, attr, attr->mode, uid, gid, NULL); kernfs_put(parent); return error; } EXPORT_SYMBOL_GPL(sysfs_add_file_to_group); /** * sysfs_chmod_file - update the modified mode value on an object attribute. * @kobj: object we're acting for. * @attr: attribute descriptor. * @mode: file permissions. * */ int sysfs_chmod_file(struct kobject *kobj, const struct attribute *attr, umode_t mode) { struct kernfs_node *kn; struct iattr newattrs; int rc; kn = kernfs_find_and_get(kobj->sd, attr->name); if (!kn) return -ENOENT; newattrs.ia_mode = (mode & S_IALLUGO) | (kn->mode & ~S_IALLUGO); newattrs.ia_valid = ATTR_MODE; rc = kernfs_setattr(kn, &newattrs); kernfs_put(kn); return rc; } EXPORT_SYMBOL_GPL(sysfs_chmod_file); /** * sysfs_break_active_protection - break "active" protection * @kobj: The kernel object @attr is associated with. * @attr: The attribute to break the "active" protection for. * * With sysfs, just like kernfs, deletion of an attribute is postponed until * all active .show() and .store() callbacks have finished unless this function * is called. Hence this function is useful in methods that implement self * deletion. */ struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj, const struct attribute *attr) { struct kernfs_node *kn; kobject_get(kobj); kn = kernfs_find_and_get(kobj->sd, attr->name); if (kn) kernfs_break_active_protection(kn); else kobject_put(kobj); return kn; } EXPORT_SYMBOL_GPL(sysfs_break_active_protection); /** * sysfs_unbreak_active_protection - restore "active" protection * @kn: Pointer returned by sysfs_break_active_protection(). * * Undo the effects of sysfs_break_active_protection(). Since this function * calls kernfs_put() on the kernfs node that corresponds to the 'attr' * argument passed to sysfs_break_active_protection() that attribute may have * been removed between the sysfs_break_active_protection() and * sysfs_unbreak_active_protection() calls, it is not safe to access @kn after * this function has returned. */ void sysfs_unbreak_active_protection(struct kernfs_node *kn) { struct kobject *kobj = sysfs_file_kobj(kn); kernfs_unbreak_active_protection(kn); kernfs_put(kn); kobject_put(kobj); } EXPORT_SYMBOL_GPL(sysfs_unbreak_active_protection); /** * sysfs_remove_file_ns - remove an object attribute with a custom ns tag * @kobj: object we're acting for * @attr: attribute descriptor * @ns: namespace tag of the file to remove * * Hash the attribute name and namespace tag and kill the victim. */ void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr, const void *ns) { struct kernfs_node *parent = kobj->sd; kernfs_remove_by_name_ns(parent, attr->name, ns); } EXPORT_SYMBOL_GPL(sysfs_remove_file_ns); /** * sysfs_remove_file_self - remove an object attribute from its own method * @kobj: object we're acting for * @attr: attribute descriptor * * See kernfs_remove_self() for details. */ bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr) { struct kernfs_node *parent = kobj->sd; struct kernfs_node *kn; bool ret; kn = kernfs_find_and_get(parent, attr->name); if (WARN_ON_ONCE(!kn)) return false; ret = kernfs_remove_self(kn); kernfs_put(kn); return ret; } EXPORT_SYMBOL_GPL(sysfs_remove_file_self); void sysfs_remove_files(struct kobject *kobj, const struct attribute * const *ptr) { int i; for (i = 0; ptr[i]; i++) sysfs_remove_file(kobj, ptr[i]); } EXPORT_SYMBOL_GPL(sysfs_remove_files); /** * sysfs_remove_file_from_group - remove an attribute file from a group. * @kobj: object we're acting for. * @attr: attribute descriptor. * @group: group name. */ void sysfs_remove_file_from_group(struct kobject *kobj, const struct attribute *attr, const char *group) { struct kernfs_node *parent; if (group) { parent = kernfs_find_and_get(kobj->sd, group); } else { parent = kobj->sd; kernfs_get(parent); } if (parent) { kernfs_remove_by_name(parent, attr->name); kernfs_put(parent); } } EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group); /** * sysfs_create_bin_file - create binary file for object. * @kobj: object. * @attr: attribute descriptor. */ int sysfs_create_bin_file(struct kobject *kobj, const struct bin_attribute *attr) { kuid_t uid; kgid_t gid; if (WARN_ON(!kobj || !kobj->sd || !attr)) return -EINVAL; kobject_get_ownership(kobj, &uid, &gid); return sysfs_add_bin_file_mode_ns(kobj->sd, attr, attr->attr.mode, attr->size, uid, gid, NULL); } EXPORT_SYMBOL_GPL(sysfs_create_bin_file); /** * sysfs_remove_bin_file - remove binary file for object. * @kobj: object. * @attr: attribute descriptor. */ void sysfs_remove_bin_file(struct kobject *kobj, const struct bin_attribute *attr) { kernfs_remove_by_name(kobj->sd, attr->attr.name); } EXPORT_SYMBOL_GPL(sysfs_remove_bin_file); static int internal_change_owner(struct kernfs_node *kn, kuid_t kuid, kgid_t kgid) { struct iattr newattrs = { .ia_valid = ATTR_UID | ATTR_GID, .ia_uid = kuid, .ia_gid = kgid, }; return kernfs_setattr(kn, &newattrs); } /** * sysfs_link_change_owner - change owner of a sysfs file. * @kobj: object of the kernfs_node the symlink is located in. * @targ: object of the kernfs_node the symlink points to. * @name: name of the link. * @kuid: new owner's kuid * @kgid: new owner's kgid * * This function looks up the sysfs symlink entry @name under @kobj and changes * the ownership to @kuid/@kgid. The symlink is looked up in the namespace of * @targ. * * Returns 0 on success or error code on failure. */ int sysfs_link_change_owner(struct kobject *kobj, struct kobject *targ, const char *name, kuid_t kuid, kgid_t kgid) { struct kernfs_node *kn = NULL; int error; if (!name || !kobj->state_in_sysfs || !targ->state_in_sysfs) return -EINVAL; error = -ENOENT; kn = kernfs_find_and_get_ns(kobj->sd, name, targ->sd->ns); if (!kn) goto out; error = -EINVAL; if (kernfs_type(kn) != KERNFS_LINK) goto out; if (kn->symlink.target_kn->priv != targ) goto out; error = internal_change_owner(kn, kuid, kgid); out: kernfs_put(kn); return error; } /** * sysfs_file_change_owner - change owner of a sysfs file. * @kobj: object. * @name: name of the file to change. * @kuid: new owner's kuid * @kgid: new owner's kgid * * This function looks up the sysfs entry @name under @kobj and changes the * ownership to @kuid/@kgid. * * Returns 0 on success or error code on failure. */ int sysfs_file_change_owner(struct kobject *kobj, const char *name, kuid_t kuid, kgid_t kgid) { struct kernfs_node *kn; int error; if (!name) return -EINVAL; if (!kobj->state_in_sysfs) return -EINVAL; kn = kernfs_find_and_get(kobj->sd, name); if (!kn) return -ENOENT; error = internal_change_owner(kn, kuid, kgid); kernfs_put(kn); return error; } EXPORT_SYMBOL_GPL(sysfs_file_change_owner); /** * sysfs_change_owner - change owner of the given object. * @kobj: object. * @kuid: new owner's kuid * @kgid: new owner's kgid * * Change the owner of the default directory, files, groups, and attributes of * @kobj to @kuid/@kgid. Note that sysfs_change_owner mirrors how the sysfs * entries for a kobject are added by driver core. In summary, * sysfs_change_owner() takes care of the default directory entry for @kobj, * the default attributes associated with the ktype of @kobj and the default * attributes associated with the ktype of @kobj. * Additional properties not added by driver core have to be changed by the * driver or subsystem which created them. This is similar to how * driver/subsystem specific entries are removed. * * Returns 0 on success or error code on failure. */ int sysfs_change_owner(struct kobject *kobj, kuid_t kuid, kgid_t kgid) { int error; const struct kobj_type *ktype; if (!kobj->state_in_sysfs) return -EINVAL; /* Change the owner of the kobject itself. */ error = internal_change_owner(kobj->sd, kuid, kgid); if (error) return error; ktype = get_ktype(kobj); if (ktype) { /* * Change owner of the default groups associated with the * ktype of @kobj. */ error = sysfs_groups_change_owner(kobj, ktype->default_groups, kuid, kgid); if (error) return error; } return 0; } EXPORT_SYMBOL_GPL(sysfs_change_owner); /** * sysfs_emit - scnprintf equivalent, aware of PAGE_SIZE buffer. * @buf: start of PAGE_SIZE buffer. * @fmt: format * @...: optional arguments to @format * * * Returns number of characters written to @buf. */ int sysfs_emit(char *buf, const char *fmt, ...) { va_list args; int len; if (WARN(!buf || offset_in_page(buf), "invalid sysfs_emit: buf:%p\n", buf)) return 0; va_start(args, fmt); len = vscnprintf(buf, PAGE_SIZE, fmt, args); va_end(args); return len; } EXPORT_SYMBOL_GPL(sysfs_emit); /** * sysfs_emit_at - scnprintf equivalent, aware of PAGE_SIZE buffer. * @buf: start of PAGE_SIZE buffer. * @at: offset in @buf to start write in bytes * @at must be >= 0 && < PAGE_SIZE * @fmt: format * @...: optional arguments to @fmt * * * Returns number of characters written starting at &@buf[@at]. */ int sysfs_emit_at(char *buf, int at, const char *fmt, ...) { va_list args; int len; if (WARN(!buf || offset_in_page(buf) || at < 0 || at >= PAGE_SIZE, "invalid sysfs_emit_at: buf:%p at:%d\n", buf, at)) return 0; va_start(args, fmt); len = vscnprintf(buf + at, PAGE_SIZE - at, fmt, args); va_end(args); return len; } EXPORT_SYMBOL_GPL(sysfs_emit_at); /** * sysfs_bin_attr_simple_read - read callback to simply copy from memory. * @file: attribute file which is being read. * @kobj: object to which the attribute belongs. * @attr: attribute descriptor. * @buf: destination buffer. * @off: offset in bytes from which to read. * @count: maximum number of bytes to read. * * Simple ->read() callback for bin_attributes backed by a buffer in memory. * The @private and @size members in struct bin_attribute must be set to the * buffer's location and size before the bin_attribute is created in sysfs. * * Bounds check for @off and @count is done in sysfs_kf_bin_read(). * Negative value check for @off is done in vfs_setpos() and default_llseek(). * * Returns number of bytes written to @buf. */ ssize_t sysfs_bin_attr_simple_read(struct file *file, struct kobject *kobj, const struct bin_attribute *attr, char *buf, loff_t off, size_t count) { memcpy(buf, attr->private + off, count); return count; } EXPORT_SYMBOL_GPL(sysfs_bin_attr_simple_read); |
| 4 4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 | /* SPDX-License-Identifier: GPL-2.0-only */ /* The industrial I/O core * * Copyright (c) 2008 Jonathan Cameron */ #ifndef _INDUSTRIAL_IO_H_ #define _INDUSTRIAL_IO_H_ #include <linux/align.h> #include <linux/device.h> #include <linux/cdev.h> #include <linux/compiler_types.h> #include <linux/minmax.h> #include <linux/slab.h> #include <linux/iio/types.h> /* IIO TODO LIST */ /* * Provide means of adjusting timer accuracy. * Currently assumes nano seconds. */ struct fwnode_reference_args; enum iio_shared_by { IIO_SEPARATE, IIO_SHARED_BY_TYPE, IIO_SHARED_BY_DIR, IIO_SHARED_BY_ALL }; enum iio_endian { IIO_CPU, IIO_BE, IIO_LE, }; struct iio_chan_spec; struct iio_dev; /** * struct iio_chan_spec_ext_info - Extended channel info attribute * @name: Info attribute name * @shared: Whether this attribute is shared between all channels. * @read: Read callback for this info attribute, may be NULL. * @write: Write callback for this info attribute, may be NULL. * @private: Data private to the driver. */ struct iio_chan_spec_ext_info { const char *name; enum iio_shared_by shared; ssize_t (*read)(struct iio_dev *, uintptr_t private, struct iio_chan_spec const *, char *buf); ssize_t (*write)(struct iio_dev *, uintptr_t private, struct iio_chan_spec const *, const char *buf, size_t len); uintptr_t private; }; /** * struct iio_enum - Enum channel info attribute * @items: An array of strings. * @num_items: Length of the item array. * @set: Set callback function, may be NULL. * @get: Get callback function, may be NULL. * * The iio_enum struct can be used to implement enum style channel attributes. * Enum style attributes are those which have a set of strings which map to * unsigned integer values. The IIO enum helper code takes care of mapping * between value and string as well as generating a "_available" file which * contains a list of all available items. The set callback will be called when * the attribute is updated. The last parameter is the index to the newly * activated item. The get callback will be used to query the currently active * item and is supposed to return the index for it. */ struct iio_enum { const char * const *items; unsigned int num_items; int (*set)(struct iio_dev *, const struct iio_chan_spec *, unsigned int); int (*get)(struct iio_dev *, const struct iio_chan_spec *); }; ssize_t iio_enum_available_read(struct iio_dev *indio_dev, uintptr_t priv, const struct iio_chan_spec *chan, char *buf); ssize_t iio_enum_read(struct iio_dev *indio_dev, uintptr_t priv, const struct iio_chan_spec *chan, char *buf); ssize_t iio_enum_write(struct iio_dev *indio_dev, uintptr_t priv, const struct iio_chan_spec *chan, const char *buf, size_t len); /** * IIO_ENUM() - Initialize enum extended channel attribute * @_name: Attribute name * @_shared: Whether the attribute is shared between all channels * @_e: Pointer to an iio_enum struct * * This should usually be used together with IIO_ENUM_AVAILABLE() */ #define IIO_ENUM(_name, _shared, _e) \ { \ .name = (_name), \ .shared = (_shared), \ .read = iio_enum_read, \ .write = iio_enum_write, \ .private = (uintptr_t)(_e), \ } /** * IIO_ENUM_AVAILABLE() - Initialize enum available extended channel attribute * @_name: Attribute name ("_available" will be appended to the name) * @_shared: Whether the attribute is shared between all channels * @_e: Pointer to an iio_enum struct * * Creates a read only attribute which lists all the available enum items in a * space separated list. This should usually be used together with IIO_ENUM() */ #define IIO_ENUM_AVAILABLE(_name, _shared, _e) \ { \ .name = (_name "_available"), \ .shared = _shared, \ .read = iio_enum_available_read, \ .private = (uintptr_t)(_e), \ } /** * struct iio_mount_matrix - iio mounting matrix * @rotation: 3 dimensional space rotation matrix defining sensor alignment with * main hardware */ struct iio_mount_matrix { const char *rotation[9]; }; ssize_t iio_show_mount_matrix(struct iio_dev *indio_dev, uintptr_t priv, const struct iio_chan_spec *chan, char *buf); int iio_read_mount_matrix(struct device *dev, struct iio_mount_matrix *matrix); typedef const struct iio_mount_matrix * (iio_get_mount_matrix_t)(const struct iio_dev *indio_dev, const struct iio_chan_spec *chan); /** * IIO_MOUNT_MATRIX() - Initialize mount matrix extended channel attribute * @_shared: Whether the attribute is shared between all channels * @_get: Pointer to an iio_get_mount_matrix_t accessor */ #define IIO_MOUNT_MATRIX(_shared, _get) \ { \ .name = "mount_matrix", \ .shared = (_shared), \ .read = iio_show_mount_matrix, \ .private = (uintptr_t)(_get), \ } /** * struct iio_event_spec - specification for a channel event * @type: Type of the event * @dir: Direction of the event * @mask_separate: Bit mask of enum iio_event_info values. Attributes * set in this mask will be registered per channel. * @mask_shared_by_type: Bit mask of enum iio_event_info values. Attributes * set in this mask will be shared by channel type. * @mask_shared_by_dir: Bit mask of enum iio_event_info values. Attributes * set in this mask will be shared by channel type and * direction. * @mask_shared_by_all: Bit mask of enum iio_event_info values. Attributes * set in this mask will be shared by all channels. */ struct iio_event_spec { enum iio_event_type type; enum iio_event_direction dir; unsigned long mask_separate; unsigned long mask_shared_by_type; unsigned long mask_shared_by_dir; unsigned long mask_shared_by_all; }; /** * struct iio_scan_type - specification for channel data format in buffer * @sign: 's' or 'u' to specify signed or unsigned * @realbits: Number of valid bits of data * @storagebits: Realbits + padding * @shift: Shift right by this before masking out realbits. * @repeat: Number of times real/storage bits repeats. When the * repeat element is more than 1, then the type element in * sysfs will show a repeat value. Otherwise, the number * of repetitions is omitted. * @endianness: little or big endian */ struct iio_scan_type { char sign; u8 realbits; u8 storagebits; u8 shift; u8 repeat; enum iio_endian endianness; }; /** * struct iio_chan_spec - specification of a single channel * @type: What type of measurement is the channel making. * @channel: What number do we wish to assign the channel. * @channel2: If there is a second number for a differential * channel then this is it. If modified is set then the * value here specifies the modifier. * @address: Driver specific identifier. * @scan_index: Monotonic index to give ordering in scans when read * from a buffer. * @scan_type: struct describing the scan type - mutually exclusive * with ext_scan_type. * @ext_scan_type: Used in rare cases where there is more than one scan * format for a channel. When this is used, the flag * has_ext_scan_type must be set and the driver must * implement get_current_scan_type in struct iio_info. * @num_ext_scan_type: Number of elements in ext_scan_type. * @info_mask_separate: What information is to be exported that is specific to * this channel. * @info_mask_separate_available: What availability information is to be * exported that is specific to this channel. * @info_mask_shared_by_type: What information is to be exported that is shared * by all channels of the same type. * @info_mask_shared_by_type_available: What availability information is to be * exported that is shared by all channels of the same * type. * @info_mask_shared_by_dir: What information is to be exported that is shared * by all channels of the same direction. * @info_mask_shared_by_dir_available: What availability information is to be * exported that is shared by all channels of the same * direction. * @info_mask_shared_by_all: What information is to be exported that is shared * by all channels. * @info_mask_shared_by_all_available: What availability information is to be * exported that is shared by all channels. * @event_spec: Array of events which should be registered for this * channel. * @num_event_specs: Size of the event_spec array. * @ext_info: Array of extended info attributes for this channel. * The array is NULL terminated, the last element should * have its name field set to NULL. * @extend_name: Allows labeling of channel attributes with an * informative name. Note this has no effect codes etc, * unlike modifiers. * This field is deprecated in favour of providing * iio_info->read_label() to override the label, which * unlike @extend_name does not affect sysfs filenames. * @datasheet_name: A name used in in-kernel mapping of channels. It should * correspond to the first name that the channel is referred * to by in the datasheet (e.g. IND), or the nearest * possible compound name (e.g. IND-INC). * @modified: Does a modifier apply to this channel. What these are * depends on the channel type. Modifier is set in * channel2. Examples are IIO_MOD_X for axial sensors about * the 'x' axis. * @indexed: Specify the channel has a numerical index. If not, * the channel index number will be suppressed for sysfs * attributes but not for event codes. * @output: Channel is output. * @differential: Channel is differential. * @has_ext_scan_type: True if ext_scan_type is used instead of scan_type. */ struct iio_chan_spec { enum iio_chan_type type; int channel; int channel2; unsigned long address; int scan_index; union { struct iio_scan_type scan_type; struct { const struct iio_scan_type *ext_scan_type; unsigned int num_ext_scan_type; }; }; unsigned long info_mask_separate; unsigned long info_mask_separate_available; unsigned long info_mask_shared_by_type; unsigned long info_mask_shared_by_type_available; unsigned long info_mask_shared_by_dir; unsigned long info_mask_shared_by_dir_available; unsigned long info_mask_shared_by_all; unsigned long info_mask_shared_by_all_available; const struct iio_event_spec *event_spec; unsigned int num_event_specs; const struct iio_chan_spec_ext_info *ext_info; const char *extend_name; const char *datasheet_name; unsigned int modified:1; unsigned int indexed:1; unsigned int output:1; unsigned int differential:1; unsigned int has_ext_scan_type:1; }; /** * iio_channel_has_info() - Checks whether a channel supports a info attribute * @chan: The channel to be queried * @type: Type of the info attribute to be checked * * Returns true if the channels supports reporting values for the given info * attribute type, false otherwise. */ static inline bool iio_channel_has_info(const struct iio_chan_spec *chan, enum iio_chan_info_enum type) { return (chan->info_mask_separate & BIT(type)) | (chan->info_mask_shared_by_type & BIT(type)) | (chan->info_mask_shared_by_dir & BIT(type)) | (chan->info_mask_shared_by_all & BIT(type)); } /** * iio_channel_has_available() - Checks if a channel has an available attribute * @chan: The channel to be queried * @type: Type of the available attribute to be checked * * Returns true if the channel supports reporting available values for the * given attribute type, false otherwise. */ static inline bool iio_channel_has_available(const struct iio_chan_spec *chan, enum iio_chan_info_enum type) { return (chan->info_mask_separate_available & BIT(type)) | (chan->info_mask_shared_by_type_available & BIT(type)) | (chan->info_mask_shared_by_dir_available & BIT(type)) | (chan->info_mask_shared_by_all_available & BIT(type)); } #define IIO_CHAN_SOFT_TIMESTAMP(_si) { \ .type = IIO_TIMESTAMP, \ .channel = -1, \ .scan_index = _si, \ .scan_type = { \ .sign = 's', \ .realbits = 64, \ .storagebits = 64, \ }, \ } s64 iio_get_time_ns(const struct iio_dev *indio_dev); /* * Device operating modes * @INDIO_DIRECT_MODE: There is an access to either: * a) The last single value available for devices that do not provide * on-demand reads. * b) A new value after performing an on-demand read otherwise. * On most devices, this is a single-shot read. On some devices with data * streams without an 'on-demand' function, this might also be the 'last value' * feature. Above all, this mode internally means that we are not in any of the * other modes, and sysfs reads should work. * Device drivers should inform the core if they support this mode. * @INDIO_BUFFER_TRIGGERED: Common mode when dealing with kfifo buffers. * It indicates that an explicit trigger is required. This requests the core to * attach a poll function when enabling the buffer, which is indicated by the * _TRIGGERED suffix. * The core will ensure this mode is set when registering a triggered buffer * with iio_triggered_buffer_setup(). * @INDIO_BUFFER_SOFTWARE: Another kfifo buffer mode, but not event triggered. * No poll function can be attached because there is no triggered infrastructure * we can use to cause capture. There is a kfifo that the driver will fill, but * not "only one scan at a time". Typically, hardware will have a buffer that * can hold multiple scans. Software may read one or more scans at a single time * and push the available data to a Kfifo. This means the core will not attach * any poll function when enabling the buffer. * The core will ensure this mode is set when registering a simple kfifo buffer * with devm_iio_kfifo_buffer_setup(). * @INDIO_BUFFER_HARDWARE: For specific hardware, if unsure do not use this mode. * Same as above but this time the buffer is not a kfifo where we have direct * access to the data. Instead, the consumer driver must access the data through * non software visible channels (or DMA when there is no demux possible in * software) * The core will ensure this mode is set when registering a dmaengine buffer * with devm_iio_dmaengine_buffer_setup(). * @INDIO_EVENT_TRIGGERED: Very unusual mode. * Triggers usually refer to an external event which will start data capture. * Here it is kind of the opposite as, a particular state of the data might * produce an event which can be considered as an event. We don't necessarily * have access to the data itself, but to the event produced. For example, this * can be a threshold detector. The internal path of this mode is very close to * the INDIO_BUFFER_TRIGGERED mode. * The core will ensure this mode is set when registering a triggered event. * @INDIO_HARDWARE_TRIGGERED: Very unusual mode. * Here, triggers can result in data capture and can be routed to multiple * hardware components, which make them close to regular triggers in the way * they must be managed by the core, but without the entire interrupts/poll * functions burden. Interrupts are irrelevant as the data flow is hardware * mediated and distributed. */ #define INDIO_DIRECT_MODE 0x01 #define INDIO_BUFFER_TRIGGERED 0x02 #define INDIO_BUFFER_SOFTWARE 0x04 #define INDIO_BUFFER_HARDWARE 0x08 #define INDIO_EVENT_TRIGGERED 0x10 #define INDIO_HARDWARE_TRIGGERED 0x20 #define INDIO_ALL_BUFFER_MODES \ (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE | INDIO_BUFFER_SOFTWARE) #define INDIO_ALL_TRIGGERED_MODES \ (INDIO_BUFFER_TRIGGERED \ | INDIO_EVENT_TRIGGERED \ | INDIO_HARDWARE_TRIGGERED) #define INDIO_MAX_RAW_ELEMENTS 4 struct iio_val_int_plus_micro { int integer; int micro; }; struct iio_trigger; /* forward declaration */ /** * struct iio_info - constant information about device * @event_attrs: event control attributes * @attrs: general purpose device attributes * @read_raw: function to request a value from the device. * mask specifies which value. Note 0 means a reading of * the channel in question. Return value will specify the * type of value returned by the device. val and val2 will * contain the elements making up the returned value. * @read_raw_multi: function to return values from the device. * mask specifies which value. Note 0 means a reading of * the channel in question. Return value will specify the * type of value returned by the device. vals pointer * contain the elements making up the returned value. * max_len specifies maximum number of elements * vals pointer can contain. val_len is used to return * length of valid elements in vals. * @read_avail: function to return the available values from the device. * mask specifies which value. Note 0 means the available * values for the channel in question. Return value * specifies if a IIO_AVAIL_LIST or a IIO_AVAIL_RANGE is * returned in vals. The type of the vals are returned in * type and the number of vals is returned in length. For * ranges, there are always three vals returned; min, step * and max. For lists, all possible values are enumerated. * @write_raw: function to write a value to the device. * Parameters are the same as for read_raw. * @read_label: function to request label name for a specified label, * for better channel identification. * @write_raw_get_fmt: callback function to query the expected * format/precision. If not set by the driver, write_raw * returns IIO_VAL_INT_PLUS_MICRO. * @read_event_config: find out if the event is enabled. * @write_event_config: set if the event is enabled. * @read_event_value: read a configuration value associated with the event. * @write_event_value: write a configuration value for the event. * @read_event_label: function to request label name for a specified label, * for better event identification. * @validate_trigger: function to validate the trigger when the * current trigger gets changed. * @get_current_scan_type: must be implemented by drivers that use ext_scan_type * in the channel spec to return the index of the currently * active ext_scan type for a channel. * @update_scan_mode: function to configure device and scan buffer when * channels have changed * @debugfs_reg_access: function to read or write register value of device * @fwnode_xlate: fwnode based function pointer to obtain channel specifier index. * @hwfifo_set_watermark: function pointer to set the current hardware * fifo watermark level; see hwfifo_* entries in * Documentation/ABI/testing/sysfs-bus-iio for details on * how the hardware fifo operates * @hwfifo_flush_to_buffer: function pointer to flush the samples stored * in the hardware fifo to the device buffer. The driver * should not flush more than count samples. The function * must return the number of samples flushed, 0 if no * samples were flushed or a negative integer if no samples * were flushed and there was an error. **/ struct iio_info { const struct attribute_group *event_attrs; const struct attribute_group *attrs; int (*read_raw)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask); int (*read_raw_multi)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int max_len, int *vals, int *val_len, long mask); int (*read_avail)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, const int **vals, int *type, int *length, long mask); int (*write_raw)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask); int (*read_label)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, char *label); int (*write_raw_get_fmt)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, long mask); int (*read_event_config)(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir); int (*write_event_config)(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, bool state); int (*read_event_value)(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2); int (*write_event_value)(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2); int (*read_event_label)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, enum iio_event_type type, enum iio_event_direction dir, char *label); int (*validate_trigger)(struct iio_dev *indio_dev, struct iio_trigger *trig); int (*get_current_scan_type)(const struct iio_dev *indio_dev, const struct iio_chan_spec *chan); int (*update_scan_mode)(struct iio_dev *indio_dev, const unsigned long *scan_mask); int (*debugfs_reg_access)(struct iio_dev *indio_dev, unsigned int reg, unsigned int writeval, unsigned int *readval); int (*fwnode_xlate)(struct iio_dev *indio_dev, const struct fwnode_reference_args *iiospec); int (*hwfifo_set_watermark)(struct iio_dev *indio_dev, unsigned int val); int (*hwfifo_flush_to_buffer)(struct iio_dev *indio_dev, unsigned int count); }; /** * struct iio_buffer_setup_ops - buffer setup related callbacks * @preenable: [DRIVER] function to run prior to marking buffer enabled * @postenable: [DRIVER] function to run after marking buffer enabled * @predisable: [DRIVER] function to run prior to marking buffer * disabled * @postdisable: [DRIVER] function to run after marking buffer disabled * @validate_scan_mask: [DRIVER] function callback to check whether a given * scan mask is valid for the device. */ struct iio_buffer_setup_ops { int (*preenable)(struct iio_dev *); int (*postenable)(struct iio_dev *); int (*predisable)(struct iio_dev *); int (*postdisable)(struct iio_dev *); bool (*validate_scan_mask)(struct iio_dev *indio_dev, const unsigned long *scan_mask); }; /** * struct iio_dev - industrial I/O device * @modes: [DRIVER] bitmask listing all the operating modes * supported by the IIO device. This list should be * initialized before registering the IIO device. It can * also be filed up by the IIO core, as a result of * enabling particular features in the driver * (see iio_triggered_event_setup()). * @dev: [DRIVER] device structure, should be assigned a parent * and owner * @buffer: [DRIVER] any buffer present * @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux * @available_scan_masks: [DRIVER] optional array of allowed bitmasks. Sort the * array in order of preference, the most preferred * masks first. * @masklength: [INTERN] the length of the mask established from * channels * @active_scan_mask: [INTERN] union of all scan masks requested by buffers * @scan_timestamp: [INTERN] set if any buffers have requested timestamp * @trig: [INTERN] current device trigger (buffer modes) * @pollfunc: [DRIVER] function run on trigger being received * @pollfunc_event: [DRIVER] function run on events trigger being received * @channels: [DRIVER] channel specification structure table * @num_channels: [DRIVER] number of channels specified in @channels. * @name: [DRIVER] name of the device. * @label: [DRIVER] unique name to identify which device this is * @info: [DRIVER] callbacks and constant info from driver * @setup_ops: [DRIVER] callbacks to call before and after buffer * enable/disable * @priv: [DRIVER] reference to driver's private information * **MUST** be accessed **ONLY** via iio_priv() helper */ struct iio_dev { int modes; struct device dev; struct iio_buffer *buffer; int scan_bytes; const unsigned long *available_scan_masks; unsigned int __private masklength; const unsigned long *active_scan_mask; bool __private scan_timestamp; struct iio_trigger *trig; struct iio_poll_func *pollfunc; struct iio_poll_func *pollfunc_event; struct iio_chan_spec const *channels; int num_channels; const char *name; const char *label; const struct iio_info *info; const struct iio_buffer_setup_ops *setup_ops; void *__private priv; }; int iio_device_id(struct iio_dev *indio_dev); int iio_device_get_current_mode(struct iio_dev *indio_dev); bool iio_buffer_enabled(struct iio_dev *indio_dev); const struct iio_chan_spec *iio_find_channel_from_si(struct iio_dev *indio_dev, int si); /** * iio_device_register() - register a device with the IIO subsystem * @indio_dev: Device structure filled by the device driver **/ #define iio_device_register(indio_dev) \ __iio_device_register((indio_dev), THIS_MODULE) int __iio_device_register(struct iio_dev *indio_dev, struct module *this_mod); void iio_device_unregister(struct iio_dev *indio_dev); /** * devm_iio_device_register - Resource-managed iio_device_register() * @dev: Device to allocate iio_dev for * @indio_dev: Device structure filled by the device driver * * Managed iio_device_register. The IIO device registered with this * function is automatically unregistered on driver detach. This function * calls iio_device_register() internally. Refer to that function for more * information. * * RETURNS: * 0 on success, negative error number on failure. */ #define devm_iio_device_register(dev, indio_dev) \ __devm_iio_device_register((dev), (indio_dev), THIS_MODULE) int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev, struct module *this_mod); int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp); bool __iio_device_claim_direct(struct iio_dev *indio_dev); void __iio_device_release_direct(struct iio_dev *indio_dev); /* * Helper functions that allow claim and release of direct mode * in a fashion that doesn't generate many false positives from sparse. * Note this must remain static inline in the header so that sparse * can see the __acquire() marking. Revisit when sparse supports * __cond_acquires() */ static inline bool iio_device_claim_direct(struct iio_dev *indio_dev) { if (!__iio_device_claim_direct(indio_dev)) return false; __acquire(iio_dev); return true; } static inline void iio_device_release_direct(struct iio_dev *indio_dev) { __iio_device_release_direct(indio_dev); __release(indio_dev); } int iio_device_claim_buffer_mode(struct iio_dev *indio_dev); void iio_device_release_buffer_mode(struct iio_dev *indio_dev); extern const struct bus_type iio_bus_type; /** * iio_device_put() - reference counted deallocation of struct device * @indio_dev: IIO device structure containing the device **/ static inline void iio_device_put(struct iio_dev *indio_dev) { if (indio_dev) put_device(&indio_dev->dev); } clockid_t iio_device_get_clock(const struct iio_dev *indio_dev); int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id); /** * dev_to_iio_dev() - Get IIO device struct from a device struct * @dev: The device embedded in the IIO device * * Note: The device must be a IIO device, otherwise the result is undefined. */ static inline struct iio_dev *dev_to_iio_dev(struct device *dev) { return container_of(dev, struct iio_dev, dev); } /** * iio_device_get() - increment reference count for the device * @indio_dev: IIO device structure * * Returns: The passed IIO device **/ static inline struct iio_dev *iio_device_get(struct iio_dev *indio_dev) { return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL; } /** * iio_device_set_parent() - assign parent device to the IIO device object * @indio_dev: IIO device structure * @parent: reference to parent device object * * This utility must be called between IIO device allocation * (via devm_iio_device_alloc()) & IIO device registration * (via iio_device_register() and devm_iio_device_register())). * By default, the device allocation will also assign a parent device to * the IIO device object. In cases where devm_iio_device_alloc() is used, * sometimes the parent device must be different than the device used to * manage the allocation. * In that case, this helper should be used to change the parent, hence the * requirement to call this between allocation & registration. **/ static inline void iio_device_set_parent(struct iio_dev *indio_dev, struct device *parent) { indio_dev->dev.parent = parent; } /** * iio_device_set_drvdata() - Set device driver data * @indio_dev: IIO device structure * @data: Driver specific data * * Allows to attach an arbitrary pointer to an IIO device, which can later be * retrieved by iio_device_get_drvdata(). */ static inline void iio_device_set_drvdata(struct iio_dev *indio_dev, void *data) { dev_set_drvdata(&indio_dev->dev, data); } /** * iio_device_get_drvdata() - Get device driver data * @indio_dev: IIO device structure * * Returns the data previously set with iio_device_set_drvdata() */ static inline void *iio_device_get_drvdata(const struct iio_dev *indio_dev) { return dev_get_drvdata(&indio_dev->dev); } /* * Used to ensure the iio_priv() structure is aligned to allow that structure * to in turn include IIO_DMA_MINALIGN'd elements such as buffers which * must not share cachelines with the rest of the structure, thus making * them safe for use with non-coherent DMA. * * A number of drivers also use this on buffers that include a 64-bit timestamp * that is used with iio_push_to_buffers_with_ts(). Therefore, in the case where * DMA alignment is not sufficient for proper timestamp alignment, we align to * 8 bytes instead. */ #define IIO_DMA_MINALIGN MAX(ARCH_DMA_MINALIGN, sizeof(s64)) #define __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ type name[ALIGN((count), sizeof(s64) / sizeof(type)) + sizeof(s64) / sizeof(type)] /** * IIO_DECLARE_BUFFER_WITH_TS() - Declare a buffer with timestamp * @type: element type of the buffer * @name: identifier name of the buffer * @count: number of elements in the buffer * * Declares a buffer that is safe to use with iio_push_to_buffers_with_ts(). In * addition to allocating enough space for @count elements of @type, it also * allocates space for a s64 timestamp at the end of the buffer and ensures * proper alignment of the timestamp. */ #define IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(sizeof(s64)) /** * IIO_DECLARE_DMA_BUFFER_WITH_TS() - Declare a DMA-aligned buffer with timestamp * @type: element type of the buffer * @name: identifier name of the buffer * @count: number of elements in the buffer * * Same as IIO_DECLARE_BUFFER_WITH_TS(), but is uses __aligned(IIO_DMA_MINALIGN) * to ensure that the buffer doesn't share cachelines with anything that comes * before it in a struct. This should not be used for stack-allocated buffers * as stack memory cannot generally be used for DMA. */ #define IIO_DECLARE_DMA_BUFFER_WITH_TS(type, name, count) \ __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(IIO_DMA_MINALIGN) struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv); /* The information at the returned address is guaranteed to be cacheline aligned */ static inline void *iio_priv(const struct iio_dev *indio_dev) { return ACCESS_PRIVATE(indio_dev, priv); } void iio_device_free(struct iio_dev *indio_dev); struct iio_dev *devm_iio_device_alloc(struct device *parent, int sizeof_priv); #define devm_iio_trigger_alloc(parent, fmt, ...) \ __devm_iio_trigger_alloc((parent), THIS_MODULE, (fmt), ##__VA_ARGS__) __printf(3, 4) struct iio_trigger *__devm_iio_trigger_alloc(struct device *parent, struct module *this_mod, const char *fmt, ...); /** * iio_get_debugfs_dentry() - helper function to get the debugfs_dentry * @indio_dev: IIO device structure for device **/ #if defined(CONFIG_DEBUG_FS) struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev); #else static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev) { return NULL; } #endif /** * iio_device_suspend_triggering() - suspend trigger attached to an iio_dev * @indio_dev: iio_dev associated with the device that will have triggers suspended * * Return 0 if successful, negative otherwise **/ int iio_device_suspend_triggering(struct iio_dev *indio_dev); /** * iio_device_resume_triggering() - resume trigger attached to an iio_dev * that was previously suspended with iio_device_suspend_triggering() * @indio_dev: iio_dev associated with the device that will have triggers resumed * * Return 0 if successful, negative otherwise **/ int iio_device_resume_triggering(struct iio_dev *indio_dev); #ifdef CONFIG_ACPI bool iio_read_acpi_mount_matrix(struct device *dev, struct iio_mount_matrix *orientation, char *acpi_method); const char *iio_get_acpi_device_name_and_data(struct device *dev, const void **data); #else static inline bool iio_read_acpi_mount_matrix(struct device *dev, struct iio_mount_matrix *orientation, char *acpi_method) { return false; } static inline const char * iio_get_acpi_device_name_and_data(struct device *dev, const void **data) { return NULL; } #endif static inline const char *iio_get_acpi_device_name(struct device *dev) { return iio_get_acpi_device_name_and_data(dev, NULL); } /** * iio_get_current_scan_type - Get the current scan type for a channel * @indio_dev: the IIO device to get the scan type for * @chan: the channel to get the scan type for * * Most devices only have one scan type per channel and can just access it * directly without calling this function. Core IIO code and drivers that * implement ext_scan_type in the channel spec should use this function to * get the current scan type for a channel. * * Returns: the current scan type for the channel or error. */ static inline const struct iio_scan_type *iio_get_current_scan_type(const struct iio_dev *indio_dev, const struct iio_chan_spec *chan) { int ret; if (chan->has_ext_scan_type) { ret = indio_dev->info->get_current_scan_type(indio_dev, chan); if (ret < 0) return ERR_PTR(ret); if (ret >= chan->num_ext_scan_type) return ERR_PTR(-EINVAL); return &chan->ext_scan_type[ret]; } return &chan->scan_type; } /** * iio_get_masklength - Get length of the channels mask * @indio_dev: the IIO device to get the masklength for */ static inline unsigned int iio_get_masklength(const struct iio_dev *indio_dev) { return ACCESS_PRIVATE(indio_dev, masklength); } int iio_active_scan_mask_index(struct iio_dev *indio_dev); /** * iio_for_each_active_channel - Iterated over active channels * @indio_dev: the IIO device * @chan: Holds the index of the enabled channel */ #define iio_for_each_active_channel(indio_dev, chan) \ for_each_set_bit((chan), (indio_dev)->active_scan_mask, \ iio_get_masklength(indio_dev)) ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals); int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer, int *fract); /** * IIO_DEGREE_TO_RAD() - Convert degree to rad * @deg: A value in degree * * Returns the given value converted from degree to rad */ #define IIO_DEGREE_TO_RAD(deg) (((deg) * 314159ULL + 9000000ULL) / 18000000ULL) /** * IIO_RAD_TO_DEGREE() - Convert rad to degree * @rad: A value in rad * * Returns the given value converted from rad to degree */ #define IIO_RAD_TO_DEGREE(rad) \ (((rad) * 18000000ULL + 314159ULL / 2) / 314159ULL) /** * IIO_G_TO_M_S_2() - Convert g to meter / second**2 * @g: A value in g * * Returns the given value converted from g to meter / second**2 */ #define IIO_G_TO_M_S_2(g) ((g) * 980665ULL / 100000ULL) /** * IIO_M_S_2_TO_G() - Convert meter / second**2 to g * @ms2: A value in meter / second**2 * * Returns the given value converted from meter / second**2 to g */ #define IIO_M_S_2_TO_G(ms2) (((ms2) * 100000ULL + 980665ULL / 2) / 980665ULL) #endif /* _INDUSTRIAL_IO_H_ */ |
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* * Copyright (C) 2006 Hans Verkuil <hverkuil@kernel.org> */ #include <linux/module.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/types.h> #include <linux/videodev2.h> #include <media/tuner.h> #include <media/drv-intf/cx2341x.h> #include <media/v4l2-common.h> MODULE_DESCRIPTION("cx23415/6/8 driver"); MODULE_AUTHOR("Hans Verkuil"); MODULE_LICENSE("GPL"); static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Debug level (0-1)"); /********************** COMMON CODE *********************/ /* definitions for audio properties bits 29-28 */ #define CX2341X_AUDIO_ENCODING_METHOD_MPEG 0 #define CX2341X_AUDIO_ENCODING_METHOD_AC3 1 #define CX2341X_AUDIO_ENCODING_METHOD_LPCM 2 static const char *cx2341x_get_name(u32 id) { switch (id) { case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: return "Spatial Filter Mode"; case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER: return "Spatial Filter"; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: return "Spatial Luma Filter Type"; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: return "Spatial Chroma Filter Type"; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: return "Temporal Filter Mode"; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER: return "Temporal Filter"; case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: return "Median Filter Type"; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP: return "Median Luma Filter Maximum"; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM: return "Median Luma Filter Minimum"; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP: return "Median Chroma Filter Maximum"; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM: return "Median Chroma Filter Minimum"; case V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS: return "Insert Navigation Packets"; } return NULL; } static const char **cx2341x_get_menu(u32 id) { static const char *cx2341x_video_spatial_filter_mode_menu[] = { "Manual", "Auto", NULL }; static const char *cx2341x_video_luma_spatial_filter_type_menu[] = { "Off", "1D Horizontal", "1D Vertical", "2D H/V Separable", "2D Symmetric non-separable", NULL }; static const char *cx2341x_video_chroma_spatial_filter_type_menu[] = { "Off", "1D Horizontal", NULL }; static const char *cx2341x_video_temporal_filter_mode_menu[] = { "Manual", "Auto", NULL }; static const char *cx2341x_video_median_filter_type_menu[] = { "Off", "Horizontal", "Vertical", "Horizontal/Vertical", "Diagonal", NULL }; switch (id) { case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: return cx2341x_video_spatial_filter_mode_menu; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: return cx2341x_video_luma_spatial_filter_type_menu; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: return cx2341x_video_chroma_spatial_filter_type_menu; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: return cx2341x_video_temporal_filter_mode_menu; case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: return cx2341x_video_median_filter_type_menu; } return NULL; } static void cx2341x_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, s32 *min, s32 *max, s32 *step, s32 *def, u32 *flags) { *name = cx2341x_get_name(id); *flags = 0; switch (id) { case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: *type = V4L2_CTRL_TYPE_MENU; *min = 0; *step = 0; break; case V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS: *type = V4L2_CTRL_TYPE_BOOLEAN; *min = 0; *max = *step = 1; break; default: *type = V4L2_CTRL_TYPE_INTEGER; break; } switch (id) { case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: *flags |= V4L2_CTRL_FLAG_UPDATE; break; case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER: case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER: case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP: case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM: case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP: case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM: *flags |= V4L2_CTRL_FLAG_SLIDER; break; case V4L2_CID_MPEG_VIDEO_ENCODING: *flags |= V4L2_CTRL_FLAG_READ_ONLY; break; } } /********************** OLD CODE *********************/ /* Must be sorted from low to high control ID! */ const u32 cx2341x_mpeg_ctrls[] = { V4L2_CID_CODEC_CLASS, V4L2_CID_MPEG_STREAM_TYPE, V4L2_CID_MPEG_STREAM_VBI_FMT, V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ, V4L2_CID_MPEG_AUDIO_ENCODING, V4L2_CID_MPEG_AUDIO_L2_BITRATE, V4L2_CID_MPEG_AUDIO_MODE, V4L2_CID_MPEG_AUDIO_MODE_EXTENSION, V4L2_CID_MPEG_AUDIO_EMPHASIS, V4L2_CID_MPEG_AUDIO_CRC, V4L2_CID_MPEG_AUDIO_MUTE, V4L2_CID_MPEG_AUDIO_AC3_BITRATE, V4L2_CID_MPEG_VIDEO_ENCODING, V4L2_CID_MPEG_VIDEO_ASPECT, V4L2_CID_MPEG_VIDEO_B_FRAMES, V4L2_CID_MPEG_VIDEO_GOP_SIZE, V4L2_CID_MPEG_VIDEO_GOP_CLOSURE, V4L2_CID_MPEG_VIDEO_BITRATE_MODE, V4L2_CID_MPEG_VIDEO_BITRATE, V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION, V4L2_CID_MPEG_VIDEO_MUTE, V4L2_CID_MPEG_VIDEO_MUTE_YUV, V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE, V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE, V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE, V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER, V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP, V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS, 0 }; EXPORT_SYMBOL(cx2341x_mpeg_ctrls); static const struct cx2341x_mpeg_params default_params = { /* misc */ .capabilities = 0, .port = CX2341X_PORT_MEMORY, .width = 720, .height = 480, .is_50hz = 0, /* stream */ .stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_PS, .stream_vbi_fmt = V4L2_MPEG_STREAM_VBI_FMT_NONE, .stream_insert_nav_packets = 0, /* audio */ .audio_sampling_freq = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000, .audio_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2, .audio_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_224K, .audio_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_224K, .audio_mode = V4L2_MPEG_AUDIO_MODE_STEREO, .audio_mode_extension = V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4, .audio_emphasis = V4L2_MPEG_AUDIO_EMPHASIS_NONE, .audio_crc = V4L2_MPEG_AUDIO_CRC_NONE, .audio_mute = 0, /* video */ .video_encoding = V4L2_MPEG_VIDEO_ENCODING_MPEG_2, .video_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3, .video_b_frames = 2, .video_gop_size = 12, .video_gop_closure = 1, .video_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, .video_bitrate = 6000000, .video_bitrate_peak = 8000000, .video_temporal_decimation = 0, .video_mute = 0, .video_mute_yuv = 0x008080, /* YCbCr value for black */ /* encoding filters */ .video_spatial_filter_mode = V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL, .video_spatial_filter = 0, .video_luma_spatial_filter_type = V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR, .video_chroma_spatial_filter_type = V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR, .video_temporal_filter_mode = V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL, .video_temporal_filter = 8, .video_median_filter_type = V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF, .video_luma_median_filter_top = 255, .video_luma_median_filter_bottom = 0, .video_chroma_median_filter_top = 255, .video_chroma_median_filter_bottom = 0, }; /* Map the control ID to the correct field in the cx2341x_mpeg_params struct. Return -EINVAL if the ID is unknown, else return 0. */ static int cx2341x_get_ctrl(const struct cx2341x_mpeg_params *params, struct v4l2_ext_control *ctrl) { switch (ctrl->id) { case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: ctrl->value = params->audio_sampling_freq; break; case V4L2_CID_MPEG_AUDIO_ENCODING: ctrl->value = params->audio_encoding; break; case V4L2_CID_MPEG_AUDIO_L2_BITRATE: ctrl->value = params->audio_l2_bitrate; break; case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: ctrl->value = params->audio_ac3_bitrate; break; case V4L2_CID_MPEG_AUDIO_MODE: ctrl->value = params->audio_mode; break; case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: ctrl->value = params->audio_mode_extension; break; case V4L2_CID_MPEG_AUDIO_EMPHASIS: ctrl->value = params->audio_emphasis; break; case V4L2_CID_MPEG_AUDIO_CRC: ctrl->value = params->audio_crc; break; case V4L2_CID_MPEG_AUDIO_MUTE: ctrl->value = params->audio_mute; break; case V4L2_CID_MPEG_VIDEO_ENCODING: ctrl->value = params->video_encoding; break; case V4L2_CID_MPEG_VIDEO_ASPECT: ctrl->value = params->video_aspect; break; case V4L2_CID_MPEG_VIDEO_B_FRAMES: ctrl->value = params->video_b_frames; break; case V4L2_CID_MPEG_VIDEO_GOP_SIZE: ctrl->value = params->video_gop_size; break; case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: ctrl->value = params->video_gop_closure; break; case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: ctrl->value = params->video_bitrate_mode; break; case V4L2_CID_MPEG_VIDEO_BITRATE: ctrl->value = params->video_bitrate; break; case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: ctrl->value = params->video_bitrate_peak; break; case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: ctrl->value = params->video_temporal_decimation; break; case V4L2_CID_MPEG_VIDEO_MUTE: ctrl->value = params->video_mute; break; case V4L2_CID_MPEG_VIDEO_MUTE_YUV: ctrl->value = params->video_mute_yuv; break; case V4L2_CID_MPEG_STREAM_TYPE: ctrl->value = params->stream_type; break; case V4L2_CID_MPEG_STREAM_VBI_FMT: ctrl->value = params->stream_vbi_fmt; break; case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: ctrl->value = params->video_spatial_filter_mode; break; case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER: ctrl->value = params->video_spatial_filter; break; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: ctrl->value = params->video_luma_spatial_filter_type; break; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: ctrl->value = params->video_chroma_spatial_filter_type; break; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: ctrl->value = params->video_temporal_filter_mode; break; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER: ctrl->value = params->video_temporal_filter; break; case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: ctrl->value = params->video_median_filter_type; break; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP: ctrl->value = params->video_luma_median_filter_top; break; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM: ctrl->value = params->video_luma_median_filter_bottom; break; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP: ctrl->value = params->video_chroma_median_filter_top; break; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM: ctrl->value = params->video_chroma_median_filter_bottom; break; case V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS: ctrl->value = params->stream_insert_nav_packets; break; default: return -EINVAL; } return 0; } /* Map the control ID to the correct field in the cx2341x_mpeg_params struct. Return -EINVAL if the ID is unknown, else return 0. */ static int cx2341x_set_ctrl(struct cx2341x_mpeg_params *params, int busy, struct v4l2_ext_control *ctrl) { switch (ctrl->id) { case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: if (busy) return -EBUSY; params->audio_sampling_freq = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_ENCODING: if (busy) return -EBUSY; if (params->capabilities & CX2341X_CAP_HAS_AC3) if (ctrl->value != V4L2_MPEG_AUDIO_ENCODING_LAYER_2 && ctrl->value != V4L2_MPEG_AUDIO_ENCODING_AC3) return -ERANGE; params->audio_encoding = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_L2_BITRATE: if (busy) return -EBUSY; params->audio_l2_bitrate = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: if (busy) return -EBUSY; if (!(params->capabilities & CX2341X_CAP_HAS_AC3)) return -EINVAL; params->audio_ac3_bitrate = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_MODE: params->audio_mode = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: params->audio_mode_extension = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_EMPHASIS: params->audio_emphasis = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_CRC: params->audio_crc = ctrl->value; break; case V4L2_CID_MPEG_AUDIO_MUTE: params->audio_mute = ctrl->value; break; case V4L2_CID_MPEG_VIDEO_ASPECT: params->video_aspect = ctrl->value; break; case V4L2_CID_MPEG_VIDEO_B_FRAMES: { int b = ctrl->value + 1; int gop = params->video_gop_size; params->video_b_frames = ctrl->value; params->video_gop_size = b * ((gop + b - 1) / b); /* Max GOP size = 34 */ while (params->video_gop_size > 34) params->video_gop_size -= b; break; } case V4L2_CID_MPEG_VIDEO_GOP_SIZE: { int b = params->video_b_frames + 1; int gop = ctrl->value; params->video_gop_size = b * ((gop + b - 1) / b); /* Max GOP size = 34 */ while (params->video_gop_size > 34) params->video_gop_size -= b; ctrl->value = params->video_gop_size; break; } case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: params->video_gop_closure = ctrl->value; break; case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: if (busy) return -EBUSY; /* MPEG-1 only allows CBR */ if (params->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1 && ctrl->value != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) return -EINVAL; params->video_bitrate_mode = ctrl->value; break; case V4L2_CID_MPEG_VIDEO_BITRATE: if (busy) return -EBUSY; params->video_bitrate = ctrl->value; break; case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: if (busy) return -EBUSY; params->video_bitrate_peak = ctrl->value; break; case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: params->video_temporal_decimation = ctrl->value; break; case V4L2_CID_MPEG_VIDEO_MUTE: params->video_mute = (ctrl->value != 0); break; case V4L2_CID_MPEG_VIDEO_MUTE_YUV: params->video_mute_yuv = ctrl->value; break; case V4L2_CID_MPEG_STREAM_TYPE: if (busy) return -EBUSY; params->stream_type = ctrl->value; params->video_encoding = (params->stream_type == V4L2_MPEG_STREAM_TYPE_MPEG1_SS || params->stream_type == V4L2_MPEG_STREAM_TYPE_MPEG1_VCD) ? V4L2_MPEG_VIDEO_ENCODING_MPEG_1 : V4L2_MPEG_VIDEO_ENCODING_MPEG_2; if (params->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1) /* MPEG-1 implies CBR */ params->video_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_CBR; break; case V4L2_CID_MPEG_STREAM_VBI_FMT: params->stream_vbi_fmt = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: params->video_spatial_filter_mode = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER: params->video_spatial_filter = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: params->video_luma_spatial_filter_type = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: params->video_chroma_spatial_filter_type = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: params->video_temporal_filter_mode = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER: params->video_temporal_filter = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: params->video_median_filter_type = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP: params->video_luma_median_filter_top = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM: params->video_luma_median_filter_bottom = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP: params->video_chroma_median_filter_top = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM: params->video_chroma_median_filter_bottom = ctrl->value; break; case V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS: params->stream_insert_nav_packets = ctrl->value; break; default: return -EINVAL; } return 0; } static int cx2341x_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def) { const char *name; switch (qctrl->id) { /* MPEG controls */ case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER: case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER: case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP: case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM: case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP: case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM: case V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS: cx2341x_ctrl_fill(qctrl->id, &name, &qctrl->type, &min, &max, &step, &def, &qctrl->flags); qctrl->minimum = min; qctrl->maximum = max; qctrl->step = step; qctrl->default_value = def; qctrl->reserved[0] = qctrl->reserved[1] = 0; strscpy(qctrl->name, name, sizeof(qctrl->name)); return 0; default: return v4l2_ctrl_query_fill(qctrl, min, max, step, def); } } int cx2341x_ctrl_query(const struct cx2341x_mpeg_params *params, struct v4l2_queryctrl *qctrl) { int err; switch (qctrl->id) { case V4L2_CID_CODEC_CLASS: return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0); case V4L2_CID_MPEG_STREAM_TYPE: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_STREAM_TYPE_MPEG2_PS, V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD, 1, V4L2_MPEG_STREAM_TYPE_MPEG2_PS); case V4L2_CID_MPEG_STREAM_VBI_FMT: if (params->capabilities & CX2341X_CAP_HAS_SLICED_VBI) return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_STREAM_VBI_FMT_NONE, V4L2_MPEG_STREAM_VBI_FMT_IVTV, 1, V4L2_MPEG_STREAM_VBI_FMT_NONE); return cx2341x_ctrl_query_fill(qctrl, V4L2_MPEG_STREAM_VBI_FMT_NONE, V4L2_MPEG_STREAM_VBI_FMT_NONE, 1, default_params.stream_vbi_fmt); case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100, V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000, 1, V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000); case V4L2_CID_MPEG_AUDIO_ENCODING: if (params->capabilities & CX2341X_CAP_HAS_AC3) { /* * The state of L2 & AC3 bitrate controls can change * when this control changes, but v4l2_ctrl_query_fill() * already sets V4L2_CTRL_FLAG_UPDATE for * V4L2_CID_MPEG_AUDIO_ENCODING, so we don't here. */ return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_ENCODING_LAYER_2, V4L2_MPEG_AUDIO_ENCODING_AC3, 1, default_params.audio_encoding); } return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_ENCODING_LAYER_2, V4L2_MPEG_AUDIO_ENCODING_LAYER_2, 1, default_params.audio_encoding); case V4L2_CID_MPEG_AUDIO_L2_BITRATE: err = v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_L2_BITRATE_192K, V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1, default_params.audio_l2_bitrate); if (err) return err; if (params->capabilities & CX2341X_CAP_HAS_AC3 && params->audio_encoding != V4L2_MPEG_AUDIO_ENCODING_LAYER_2) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_AUDIO_MODE: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_MODE_STEREO, V4L2_MPEG_AUDIO_MODE_MONO, 1, V4L2_MPEG_AUDIO_MODE_STEREO); case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: err = v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4, V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16, 1, V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4); if (err == 0 && params->audio_mode != V4L2_MPEG_AUDIO_MODE_JOINT_STEREO) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return err; case V4L2_CID_MPEG_AUDIO_EMPHASIS: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_EMPHASIS_NONE, V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17, 1, V4L2_MPEG_AUDIO_EMPHASIS_NONE); case V4L2_CID_MPEG_AUDIO_CRC: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_CRC_NONE, V4L2_MPEG_AUDIO_CRC_CRC16, 1, V4L2_MPEG_AUDIO_CRC_NONE); case V4L2_CID_MPEG_AUDIO_MUTE: return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0); case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: err = v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_AC3_BITRATE_48K, V4L2_MPEG_AUDIO_AC3_BITRATE_448K, 1, default_params.audio_ac3_bitrate); if (err) return err; if (params->capabilities & CX2341X_CAP_HAS_AC3) { if (params->audio_encoding != V4L2_MPEG_AUDIO_ENCODING_AC3) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; } else qctrl->flags |= V4L2_CTRL_FLAG_DISABLED; return 0; case V4L2_CID_MPEG_VIDEO_ENCODING: /* this setting is read-only for the cx2341x since the V4L2_CID_MPEG_STREAM_TYPE really determines the MPEG-1/2 setting */ err = v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_VIDEO_ENCODING_MPEG_1, V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 1, V4L2_MPEG_VIDEO_ENCODING_MPEG_2); if (err == 0) qctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; return err; case V4L2_CID_MPEG_VIDEO_ASPECT: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_VIDEO_ASPECT_1x1, V4L2_MPEG_VIDEO_ASPECT_221x100, 1, V4L2_MPEG_VIDEO_ASPECT_4x3); case V4L2_CID_MPEG_VIDEO_B_FRAMES: return v4l2_ctrl_query_fill(qctrl, 0, 33, 1, 2); case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return v4l2_ctrl_query_fill(qctrl, 1, 34, 1, params->is_50hz ? 12 : 15); case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 1); case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: err = v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); if (err == 0 && params->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return err; case V4L2_CID_MPEG_VIDEO_BITRATE: return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 6000000); case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: err = v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 8000000); if (err == 0 && params->video_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return err; case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0); case V4L2_CID_MPEG_VIDEO_MUTE: return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0); case V4L2_CID_MPEG_VIDEO_MUTE_YUV: /* Init YUV (really YCbCr) to black */ return v4l2_ctrl_query_fill(qctrl, 0, 0xffffff, 1, 0x008080); /* CX23415/6 specific */ case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: return cx2341x_ctrl_query_fill(qctrl, V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL, V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO, 1, default_params.video_spatial_filter_mode); case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER: cx2341x_ctrl_query_fill(qctrl, 0, 15, 1, default_params.video_spatial_filter); qctrl->flags |= V4L2_CTRL_FLAG_SLIDER; if (params->video_spatial_filter_mode == V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: cx2341x_ctrl_query_fill(qctrl, V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF, V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE, 1, default_params.video_luma_spatial_filter_type); if (params->video_spatial_filter_mode == V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: cx2341x_ctrl_query_fill(qctrl, V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF, V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR, 1, default_params.video_chroma_spatial_filter_type); if (params->video_spatial_filter_mode == V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: return cx2341x_ctrl_query_fill(qctrl, V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL, V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO, 1, default_params.video_temporal_filter_mode); case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER: cx2341x_ctrl_query_fill(qctrl, 0, 31, 1, default_params.video_temporal_filter); qctrl->flags |= V4L2_CTRL_FLAG_SLIDER; if (params->video_temporal_filter_mode == V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: return cx2341x_ctrl_query_fill(qctrl, V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF, V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG, 1, default_params.video_median_filter_type); case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP: cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, default_params.video_luma_median_filter_top); qctrl->flags |= V4L2_CTRL_FLAG_SLIDER; if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM: cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, default_params.video_luma_median_filter_bottom); qctrl->flags |= V4L2_CTRL_FLAG_SLIDER; if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP: cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, default_params.video_chroma_median_filter_top); qctrl->flags |= V4L2_CTRL_FLAG_SLIDER; if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM: cx2341x_ctrl_query_fill(qctrl, 0, 255, 1, default_params.video_chroma_median_filter_bottom); qctrl->flags |= V4L2_CTRL_FLAG_SLIDER; if (params->video_median_filter_type == V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF) qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; return 0; case V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS: return cx2341x_ctrl_query_fill(qctrl, 0, 1, 1, default_params.stream_insert_nav_packets); default: return -EINVAL; } } EXPORT_SYMBOL(cx2341x_ctrl_query); const char * const *cx2341x_ctrl_get_menu(const struct cx2341x_mpeg_params *p, u32 id) { static const char * const mpeg_stream_type_without_ts[] = { "MPEG-2 Program Stream", "", "MPEG-1 System Stream", "MPEG-2 DVD-compatible Stream", "MPEG-1 VCD-compatible Stream", "MPEG-2 SVCD-compatible Stream", NULL }; static const char *mpeg_stream_type_with_ts[] = { "MPEG-2 Program Stream", "MPEG-2 Transport Stream", "MPEG-1 System Stream", "MPEG-2 DVD-compatible Stream", "MPEG-1 VCD-compatible Stream", "MPEG-2 SVCD-compatible Stream", NULL }; static const char *mpeg_audio_encoding_l2_ac3[] = { "", "MPEG-1/2 Layer II", "", "", "AC-3", NULL }; switch (id) { case V4L2_CID_MPEG_STREAM_TYPE: return (p->capabilities & CX2341X_CAP_HAS_TS) ? mpeg_stream_type_with_ts : mpeg_stream_type_without_ts; case V4L2_CID_MPEG_AUDIO_ENCODING: return (p->capabilities & CX2341X_CAP_HAS_AC3) ? mpeg_audio_encoding_l2_ac3 : v4l2_ctrl_get_menu(id); case V4L2_CID_MPEG_AUDIO_L1_BITRATE: case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return NULL; case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: case V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE: case V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE: case V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE: return cx2341x_get_menu(id); default: return v4l2_ctrl_get_menu(id); } } EXPORT_SYMBOL(cx2341x_ctrl_get_menu); static void cx2341x_calc_audio_properties(struct cx2341x_mpeg_params *params) { params->audio_properties = (params->audio_sampling_freq << 0) | (params->audio_mode << 8) | (params->audio_mode_extension << 10) | (((params->audio_emphasis == V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17) ? 3 : params->audio_emphasis) << 12) | (params->audio_crc << 14); if ((params->capabilities & CX2341X_CAP_HAS_AC3) && params->audio_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) { params->audio_properties |= /* Not sure if this MPEG Layer II setting is required */ ((3 - V4L2_MPEG_AUDIO_ENCODING_LAYER_2) << 2) | (params->audio_ac3_bitrate << 4) | (CX2341X_AUDIO_ENCODING_METHOD_AC3 << 28); } else { /* Assuming MPEG Layer II */ params->audio_properties |= ((3 - params->audio_encoding) << 2) | ((1 + params->audio_l2_bitrate) << 4); } } /* Check for correctness of the ctrl's value based on the data from struct v4l2_queryctrl and the available menu items. Note that menu_items may be NULL, in that case it is ignored. */ static int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl, const char * const *menu_items) { if (qctrl->flags & V4L2_CTRL_FLAG_DISABLED) return -EINVAL; if (qctrl->flags & V4L2_CTRL_FLAG_GRABBED) return -EBUSY; if (qctrl->type == V4L2_CTRL_TYPE_STRING) return 0; if (qctrl->type == V4L2_CTRL_TYPE_BUTTON || qctrl->type == V4L2_CTRL_TYPE_INTEGER64 || qctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) return 0; if (ctrl->value < qctrl->minimum || ctrl->value > qctrl->maximum) return -ERANGE; if (qctrl->type == V4L2_CTRL_TYPE_MENU && menu_items != NULL) { if (menu_items[ctrl->value] == NULL || menu_items[ctrl->value][0] == '\0') return -EINVAL; } if (qctrl->type == V4L2_CTRL_TYPE_BITMASK && (ctrl->value & ~qctrl->maximum)) return -ERANGE; return 0; } int cx2341x_ext_ctrls(struct cx2341x_mpeg_params *params, int busy, struct v4l2_ext_controls *ctrls, unsigned int cmd) { int err = 0; int i; if (cmd == VIDIOC_G_EXT_CTRLS) { for (i = 0; i < ctrls->count; i++) { struct v4l2_ext_control *ctrl = ctrls->controls + i; err = cx2341x_get_ctrl(params, ctrl); if (err) { ctrls->error_idx = i; break; } } return err; } for (i = 0; i < ctrls->count; i++) { struct v4l2_ext_control *ctrl = ctrls->controls + i; struct v4l2_queryctrl qctrl; const char * const *menu_items = NULL; qctrl.id = ctrl->id; err = cx2341x_ctrl_query(params, &qctrl); if (err) break; if (qctrl.type == V4L2_CTRL_TYPE_MENU) menu_items = cx2341x_ctrl_get_menu(params, qctrl.id); err = v4l2_ctrl_check(ctrl, &qctrl, menu_items); if (err) break; err = cx2341x_set_ctrl(params, busy, ctrl); if (err) break; } if (err == 0 && params->video_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && params->video_bitrate_peak < params->video_bitrate) { err = -ERANGE; ctrls->error_idx = ctrls->count; } if (err) ctrls->error_idx = i; else cx2341x_calc_audio_properties(params); return err; } EXPORT_SYMBOL(cx2341x_ext_ctrls); void cx2341x_fill_defaults(struct cx2341x_mpeg_params *p) { *p = default_params; cx2341x_calc_audio_properties(p); } EXPORT_SYMBOL(cx2341x_fill_defaults); static int cx2341x_api(void *priv, cx2341x_mbox_func func, u32 cmd, int args, ...) { u32 data[CX2341X_MBOX_MAX_DATA]; va_list vargs; int i; va_start(vargs, args); for (i = 0; i < args; i++) data[i] = va_arg(vargs, int); va_end(vargs); return func(priv, cmd, args, 0, data); } #define CMP_FIELD(__old, __new, __field) (__old->__field != __new->__field) int cx2341x_update(void *priv, cx2341x_mbox_func func, const struct cx2341x_mpeg_params *old, const struct cx2341x_mpeg_params *new) { static int mpeg_stream_type[] = { 0, /* MPEG-2 PS */ 1, /* MPEG-2 TS */ 2, /* MPEG-1 SS */ 14, /* DVD */ 11, /* VCD */ 12, /* SVCD */ }; int err; cx2341x_api(priv, func, CX2341X_ENC_SET_OUTPUT_PORT, 2, new->port, 0); if (!old || CMP_FIELD(old, new, is_50hz)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_RATE, 1, new->is_50hz); if (err) return err; } if (!old || CMP_FIELD(old, new, width) || CMP_FIELD(old, new, height) || CMP_FIELD(old, new, video_encoding)) { u16 w = new->width; u16 h = new->height; if (new->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1) { w /= 2; h /= 2; } err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_SIZE, 2, h, w); if (err) return err; } if (!old || CMP_FIELD(old, new, stream_type)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_STREAM_TYPE, 1, mpeg_stream_type[new->stream_type]); if (err) return err; } if (!old || CMP_FIELD(old, new, video_aspect)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_ASPECT_RATIO, 1, 1 + new->video_aspect); if (err) return err; } if (!old || CMP_FIELD(old, new, video_b_frames) || CMP_FIELD(old, new, video_gop_size)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_GOP_PROPERTIES, 2, new->video_gop_size, new->video_b_frames + 1); if (err) return err; } if (!old || CMP_FIELD(old, new, video_gop_closure)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_GOP_CLOSURE, 1, new->video_gop_closure); if (err) return err; } if (!old || CMP_FIELD(old, new, audio_properties)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_AUDIO_PROPERTIES, 1, new->audio_properties); if (err) return err; } if (!old || CMP_FIELD(old, new, audio_mute)) { err = cx2341x_api(priv, func, CX2341X_ENC_MUTE_AUDIO, 1, new->audio_mute); if (err) return err; } if (!old || CMP_FIELD(old, new, video_bitrate_mode) || CMP_FIELD(old, new, video_bitrate) || CMP_FIELD(old, new, video_bitrate_peak)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_BIT_RATE, 5, new->video_bitrate_mode, new->video_bitrate, new->video_bitrate_peak / 400, 0, 0); if (err) return err; } if (!old || CMP_FIELD(old, new, video_spatial_filter_mode) || CMP_FIELD(old, new, video_temporal_filter_mode) || CMP_FIELD(old, new, video_median_filter_type)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_DNR_FILTER_MODE, 2, new->video_spatial_filter_mode | (new->video_temporal_filter_mode << 1), new->video_median_filter_type); if (err) return err; } if (!old || CMP_FIELD(old, new, video_luma_median_filter_bottom) || CMP_FIELD(old, new, video_luma_median_filter_top) || CMP_FIELD(old, new, video_chroma_median_filter_bottom) || CMP_FIELD(old, new, video_chroma_median_filter_top)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_CORING_LEVELS, 4, new->video_luma_median_filter_bottom, new->video_luma_median_filter_top, new->video_chroma_median_filter_bottom, new->video_chroma_median_filter_top); if (err) return err; } if (!old || CMP_FIELD(old, new, video_luma_spatial_filter_type) || CMP_FIELD(old, new, video_chroma_spatial_filter_type)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_SPATIAL_FILTER_TYPE, 2, new->video_luma_spatial_filter_type, new->video_chroma_spatial_filter_type); if (err) return err; } if (!old || CMP_FIELD(old, new, video_spatial_filter) || CMP_FIELD(old, new, video_temporal_filter)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_DNR_FILTER_PROPS, 2, new->video_spatial_filter, new->video_temporal_filter); if (err) return err; } if (!old || CMP_FIELD(old, new, video_temporal_decimation)) { err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_DROP_RATE, 1, new->video_temporal_decimation); if (err) return err; } if (!old || CMP_FIELD(old, new, video_mute) || (new->video_mute && CMP_FIELD(old, new, video_mute_yuv))) { err = cx2341x_api(priv, func, CX2341X_ENC_MUTE_VIDEO, 1, new->video_mute | (new->video_mute_yuv << 8)); if (err) return err; } if (!old || CMP_FIELD(old, new, stream_insert_nav_packets)) { err = cx2341x_api(priv, func, CX2341X_ENC_MISC, 2, 7, new->stream_insert_nav_packets); if (err) return err; } return 0; } EXPORT_SYMBOL(cx2341x_update); static const char *cx2341x_menu_item(const struct cx2341x_mpeg_params *p, u32 id) { const char * const *menu = cx2341x_ctrl_get_menu(p, id); struct v4l2_ext_control ctrl; if (menu == NULL) goto invalid; ctrl.id = id; if (cx2341x_get_ctrl(p, &ctrl)) goto invalid; while (ctrl.value-- && *menu) menu++; if (*menu == NULL) goto invalid; return *menu; invalid: return "<invalid>"; } void cx2341x_log_status(const struct cx2341x_mpeg_params *p, const char *prefix) { int is_mpeg1 = p->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1; /* Stream */ printk(KERN_INFO "%s: Stream: %s", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_STREAM_TYPE)); if (p->stream_insert_nav_packets) printk(KERN_CONT " (with navigation packets)"); printk(KERN_CONT "\n"); printk(KERN_INFO "%s: VBI Format: %s\n", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_STREAM_VBI_FMT)); /* Video */ printk(KERN_INFO "%s: Video: %dx%d, %d fps%s\n", prefix, p->width / (is_mpeg1 ? 2 : 1), p->height / (is_mpeg1 ? 2 : 1), p->is_50hz ? 25 : 30, (p->video_mute) ? " (muted)" : ""); printk(KERN_INFO "%s: Video: %s, %s, %s, %d", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_VIDEO_ENCODING), cx2341x_menu_item(p, V4L2_CID_MPEG_VIDEO_ASPECT), cx2341x_menu_item(p, V4L2_CID_MPEG_VIDEO_BITRATE_MODE), p->video_bitrate); if (p->video_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) printk(KERN_CONT ", Peak %d", p->video_bitrate_peak); printk(KERN_CONT "\n"); printk(KERN_INFO "%s: Video: GOP Size %d, %d B-Frames, %sGOP Closure\n", prefix, p->video_gop_size, p->video_b_frames, p->video_gop_closure ? "" : "No "); if (p->video_temporal_decimation) printk(KERN_INFO "%s: Video: Temporal Decimation %d\n", prefix, p->video_temporal_decimation); /* Audio */ printk(KERN_INFO "%s: Audio: %s, %s, %s, %s%s", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ), cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_ENCODING), cx2341x_menu_item(p, p->audio_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3 ? V4L2_CID_MPEG_AUDIO_AC3_BITRATE : V4L2_CID_MPEG_AUDIO_L2_BITRATE), cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_MODE), p->audio_mute ? " (muted)" : ""); if (p->audio_mode == V4L2_MPEG_AUDIO_MODE_JOINT_STEREO) printk(KERN_CONT ", %s", cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_MODE_EXTENSION)); printk(KERN_CONT ", %s, %s\n", cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_EMPHASIS), cx2341x_menu_item(p, V4L2_CID_MPEG_AUDIO_CRC)); /* Encoding filters */ printk(KERN_INFO "%s: Spatial Filter: %s, Luma %s, Chroma %s, %d\n", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE), cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE), cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE), p->video_spatial_filter); printk(KERN_INFO "%s: Temporal Filter: %s, %d\n", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE), p->video_temporal_filter); printk(KERN_INFO "%s: Median Filter: %s, Luma [%d, %d], Chroma [%d, %d]\n", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE), p->video_luma_median_filter_bottom, p->video_luma_median_filter_top, p->video_chroma_median_filter_bottom, p->video_chroma_median_filter_top); } EXPORT_SYMBOL(cx2341x_log_status); /********************** NEW CODE *********************/ static inline struct cx2341x_handler *to_cxhdl(struct v4l2_ctrl *ctrl) { return container_of(ctrl->handler, struct cx2341x_handler, hdl); } static int cx2341x_hdl_api(struct cx2341x_handler *hdl, u32 cmd, int args, ...) { u32 data[CX2341X_MBOX_MAX_DATA]; va_list vargs; int i; va_start(vargs, args); for (i = 0; i < args; i++) data[i] = va_arg(vargs, int); va_end(vargs); return hdl->func(hdl->priv, cmd, args, 0, data); } /* ctrl->handler->lock is held, so it is safe to access cur.val */ static inline int cx2341x_neq(struct v4l2_ctrl *ctrl) { return ctrl && ctrl->val != ctrl->cur.val; } static int cx2341x_try_ctrl(struct v4l2_ctrl *ctrl) { struct cx2341x_handler *hdl = to_cxhdl(ctrl); s32 val = ctrl->val; switch (ctrl->id) { case V4L2_CID_MPEG_VIDEO_B_FRAMES: { /* video gop cluster */ int b = val + 1; int gop = hdl->video_gop_size->val; gop = b * ((gop + b - 1) / b); /* Max GOP size = 34 */ while (gop > 34) gop -= b; hdl->video_gop_size->val = gop; break; } case V4L2_CID_MPEG_STREAM_TYPE: /* stream type cluster */ hdl->video_encoding->val = (hdl->stream_type->val == V4L2_MPEG_STREAM_TYPE_MPEG1_SS || hdl->stream_type->val == V4L2_MPEG_STREAM_TYPE_MPEG1_VCD) ? V4L2_MPEG_VIDEO_ENCODING_MPEG_1 : V4L2_MPEG_VIDEO_ENCODING_MPEG_2; if (hdl->video_encoding->val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1) /* MPEG-1 implies CBR */ hdl->video_bitrate_mode->val = V4L2_MPEG_VIDEO_BITRATE_MODE_CBR; /* peak bitrate shall be >= normal bitrate */ if (hdl->video_bitrate_mode->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && hdl->video_bitrate_peak->val < hdl->video_bitrate->val) hdl->video_bitrate_peak->val = hdl->video_bitrate->val; break; } return 0; } static int cx2341x_s_ctrl(struct v4l2_ctrl *ctrl) { static const int mpeg_stream_type[] = { 0, /* MPEG-2 PS */ 1, /* MPEG-2 TS */ 2, /* MPEG-1 SS */ 14, /* DVD */ 11, /* VCD */ 12, /* SVCD */ }; struct cx2341x_handler *hdl = to_cxhdl(ctrl); s32 val = ctrl->val; u32 props; int err; switch (ctrl->id) { case V4L2_CID_MPEG_STREAM_VBI_FMT: if (hdl->ops && hdl->ops->s_stream_vbi_fmt) return hdl->ops->s_stream_vbi_fmt(hdl, val); return 0; case V4L2_CID_MPEG_VIDEO_ASPECT: return cx2341x_hdl_api(hdl, CX2341X_ENC_SET_ASPECT_RATIO, 1, val + 1); case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return cx2341x_hdl_api(hdl, CX2341X_ENC_SET_GOP_CLOSURE, 1, val); case V4L2_CID_MPEG_AUDIO_MUTE: return cx2341x_hdl_api(hdl, CX2341X_ENC_MUTE_AUDIO, 1, val); case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return cx2341x_hdl_api(hdl, CX2341X_ENC_SET_FRAME_DROP_RATE, 1, val); case V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS: return cx2341x_hdl_api(hdl, CX2341X_ENC_MISC, 2, 7, val); case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: /* audio properties cluster */ props = (hdl->audio_sampling_freq->val << 0) | (hdl->audio_mode->val << 8) | (hdl->audio_mode_extension->val << 10) | (hdl->audio_crc->val << 14); if (hdl->audio_emphasis->val == V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17) props |= 3 << 12; else props |= hdl->audio_emphasis->val << 12; if (hdl->audio_encoding->val == V4L2_MPEG_AUDIO_ENCODING_AC3) { props |= #if 1 /* Not sure if this MPEG Layer II setting is required */ ((3 - V4L2_MPEG_AUDIO_ENCODING_LAYER_2) << 2) | #endif (hdl->audio_ac3_bitrate->val << 4) | (CX2341X_AUDIO_ENCODING_METHOD_AC3 << 28); } else { /* Assuming MPEG Layer II */ props |= ((3 - hdl->audio_encoding->val) << 2) | ((1 + hdl->audio_l2_bitrate->val) << 4); } err = cx2341x_hdl_api(hdl, CX2341X_ENC_SET_AUDIO_PROPERTIES, 1, props); if (err) return err; hdl->audio_properties = props; if (hdl->audio_ac3_bitrate) { int is_ac3 = hdl->audio_encoding->val == V4L2_MPEG_AUDIO_ENCODING_AC3; v4l2_ctrl_activate(hdl->audio_ac3_bitrate, is_ac3); v4l2_ctrl_activate(hdl->audio_l2_bitrate, !is_ac3); } v4l2_ctrl_activate(hdl->audio_mode_extension, hdl->audio_mode->val == V4L2_MPEG_AUDIO_MODE_JOINT_STEREO); if (cx2341x_neq(hdl->audio_sampling_freq) && hdl->ops && hdl->ops->s_audio_sampling_freq) return hdl->ops->s_audio_sampling_freq(hdl, hdl->audio_sampling_freq->val); if (cx2341x_neq(hdl->audio_mode) && hdl->ops && hdl->ops->s_audio_mode) return hdl->ops->s_audio_mode(hdl, hdl->audio_mode->val); return 0; case V4L2_CID_MPEG_VIDEO_B_FRAMES: /* video gop cluster */ return cx2341x_hdl_api(hdl, CX2341X_ENC_SET_GOP_PROPERTIES, 2, hdl->video_gop_size->val, hdl->video_b_frames->val + 1); case V4L2_CID_MPEG_STREAM_TYPE: /* stream type cluster */ err = cx2341x_hdl_api(hdl, CX2341X_ENC_SET_STREAM_TYPE, 1, mpeg_stream_type[val]); if (err) return err; err = cx2341x_hdl_api(hdl, CX2341X_ENC_SET_BIT_RATE, 5, hdl->video_bitrate_mode->val, hdl->video_bitrate->val, hdl->video_bitrate_peak->val / 400, 0, 0); if (err) return err; v4l2_ctrl_activate(hdl->video_bitrate_mode, hdl->video_encoding->val != V4L2_MPEG_VIDEO_ENCODING_MPEG_1); v4l2_ctrl_activate(hdl->video_bitrate_peak, hdl->video_bitrate_mode->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); if (cx2341x_neq(hdl->video_encoding) && hdl->ops && hdl->ops->s_video_encoding) return hdl->ops->s_video_encoding(hdl, hdl->video_encoding->val); return 0; case V4L2_CID_MPEG_VIDEO_MUTE: /* video mute cluster */ return cx2341x_hdl_api(hdl, CX2341X_ENC_MUTE_VIDEO, 1, hdl->video_mute->val | (hdl->video_mute_yuv->val << 8)); case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE: { int active_filter; /* video filter mode */ err = cx2341x_hdl_api(hdl, CX2341X_ENC_SET_DNR_FILTER_MODE, 2, hdl->video_spatial_filter_mode->val | (hdl->video_temporal_filter_mode->val << 1), hdl->video_median_filter_type->val); if (err) return err; active_filter = hdl->video_spatial_filter_mode->val != V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO; v4l2_ctrl_activate(hdl->video_spatial_filter, active_filter); v4l2_ctrl_activate(hdl->video_luma_spatial_filter_type, active_filter); v4l2_ctrl_activate(hdl->video_chroma_spatial_filter_type, active_filter); active_filter = hdl->video_temporal_filter_mode->val != V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO; v4l2_ctrl_activate(hdl->video_temporal_filter, active_filter); active_filter = hdl->video_median_filter_type->val != V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF; v4l2_ctrl_activate(hdl->video_luma_median_filter_bottom, active_filter); v4l2_ctrl_activate(hdl->video_luma_median_filter_top, active_filter); v4l2_ctrl_activate(hdl->video_chroma_median_filter_bottom, active_filter); v4l2_ctrl_activate(hdl->video_chroma_median_filter_top, active_filter); return 0; } case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE: /* video filter type cluster */ return cx2341x_hdl_api(hdl, CX2341X_ENC_SET_SPATIAL_FILTER_TYPE, 2, hdl->video_luma_spatial_filter_type->val, hdl->video_chroma_spatial_filter_type->val); case V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER: /* video filter cluster */ return cx2341x_hdl_api(hdl, CX2341X_ENC_SET_DNR_FILTER_PROPS, 2, hdl->video_spatial_filter->val, hdl->video_temporal_filter->val); case V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP: /* video median cluster */ return cx2341x_hdl_api(hdl, CX2341X_ENC_SET_CORING_LEVELS, 4, hdl->video_luma_median_filter_bottom->val, hdl->video_luma_median_filter_top->val, hdl->video_chroma_median_filter_bottom->val, hdl->video_chroma_median_filter_top->val); } return -EINVAL; } static const struct v4l2_ctrl_ops cx2341x_ops = { .try_ctrl = cx2341x_try_ctrl, .s_ctrl = cx2341x_s_ctrl, }; static struct v4l2_ctrl *cx2341x_ctrl_new_custom(struct v4l2_ctrl_handler *hdl, u32 id, s32 min, s32 max, s32 step, s32 def) { struct v4l2_ctrl_config cfg; memset(&cfg, 0, sizeof(cfg)); cx2341x_ctrl_fill(id, &cfg.name, &cfg.type, &min, &max, &step, &def, &cfg.flags); cfg.ops = &cx2341x_ops; cfg.id = id; cfg.min = min; cfg.max = max; cfg.def = def; if (cfg.type == V4L2_CTRL_TYPE_MENU) { cfg.step = 0; cfg.menu_skip_mask = step; cfg.qmenu = cx2341x_get_menu(id); } else { cfg.step = step; cfg.menu_skip_mask = 0; } return v4l2_ctrl_new_custom(hdl, &cfg, NULL); } static struct v4l2_ctrl *cx2341x_ctrl_new_std(struct v4l2_ctrl_handler *hdl, u32 id, s32 min, s32 max, s32 step, s32 def) { return v4l2_ctrl_new_std(hdl, &cx2341x_ops, id, min, max, step, def); } static struct v4l2_ctrl *cx2341x_ctrl_new_menu(struct v4l2_ctrl_handler *hdl, u32 id, s32 max, s32 mask, s32 def) { return v4l2_ctrl_new_std_menu(hdl, &cx2341x_ops, id, max, mask, def); } int cx2341x_handler_init(struct cx2341x_handler *cxhdl, unsigned nr_of_controls_hint) { struct v4l2_ctrl_handler *hdl = &cxhdl->hdl; u32 caps = cxhdl->capabilities; int has_sliced_vbi = caps & CX2341X_CAP_HAS_SLICED_VBI; int has_ac3 = caps & CX2341X_CAP_HAS_AC3; int has_ts = caps & CX2341X_CAP_HAS_TS; cxhdl->width = 720; cxhdl->height = 480; v4l2_ctrl_handler_init(hdl, nr_of_controls_hint); /* Add controls in ascending control ID order for fastest insertion time. */ cxhdl->stream_type = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_STREAM_TYPE, V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD, has_ts ? 0 : 2, V4L2_MPEG_STREAM_TYPE_MPEG2_PS); cxhdl->stream_vbi_fmt = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_STREAM_VBI_FMT, V4L2_MPEG_STREAM_VBI_FMT_IVTV, has_sliced_vbi ? 0 : 2, V4L2_MPEG_STREAM_VBI_FMT_NONE); cxhdl->audio_sampling_freq = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ, V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000, 0, V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000); cxhdl->audio_encoding = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_ENCODING, V4L2_MPEG_AUDIO_ENCODING_AC3, has_ac3 ? ~0x12 : ~0x2, V4L2_MPEG_AUDIO_ENCODING_LAYER_2); cxhdl->audio_l2_bitrate = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_L2_BITRATE, V4L2_MPEG_AUDIO_L2_BITRATE_384K, 0x1ff, V4L2_MPEG_AUDIO_L2_BITRATE_224K); cxhdl->audio_mode = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_MODE, V4L2_MPEG_AUDIO_MODE_MONO, 0, V4L2_MPEG_AUDIO_MODE_STEREO); cxhdl->audio_mode_extension = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_MODE_EXTENSION, V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16, 0, V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4); cxhdl->audio_emphasis = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_EMPHASIS, V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17, 0, V4L2_MPEG_AUDIO_EMPHASIS_NONE); cxhdl->audio_crc = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_CRC, V4L2_MPEG_AUDIO_CRC_CRC16, 0, V4L2_MPEG_AUDIO_CRC_NONE); cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_AUDIO_MUTE, 0, 1, 1, 0); if (has_ac3) cxhdl->audio_ac3_bitrate = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_AUDIO_AC3_BITRATE, V4L2_MPEG_AUDIO_AC3_BITRATE_448K, 0x03, V4L2_MPEG_AUDIO_AC3_BITRATE_224K); cxhdl->video_encoding = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_VIDEO_ENCODING, V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 0, V4L2_MPEG_VIDEO_ENCODING_MPEG_2); cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_VIDEO_ASPECT, V4L2_MPEG_VIDEO_ASPECT_221x100, 0, V4L2_MPEG_VIDEO_ASPECT_4x3); cxhdl->video_b_frames = cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_B_FRAMES, 0, 33, 1, 2); cxhdl->video_gop_size = cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 34, 1, cxhdl->is_50hz ? 12 : 15); cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_GOP_CLOSURE, 0, 1, 1, 1); cxhdl->video_bitrate_mode = cx2341x_ctrl_new_menu(hdl, V4L2_CID_MPEG_VIDEO_BITRATE_MODE, V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); cxhdl->video_bitrate = cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_BITRATE, 0, 27000000, 1, 6000000); cxhdl->video_bitrate_peak = cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 0, 27000000, 1, 8000000); cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION, 0, 255, 1, 0); cxhdl->video_mute = cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_MUTE, 0, 1, 1, 0); cxhdl->video_mute_yuv = cx2341x_ctrl_new_std(hdl, V4L2_CID_MPEG_VIDEO_MUTE_YUV, 0, 0xffffff, 1, 0x008080); /* CX23415/6 specific */ cxhdl->video_spatial_filter_mode = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE, V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL, V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO, 0, V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL); cxhdl->video_spatial_filter = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER, 0, 15, 1, 0); cxhdl->video_luma_spatial_filter_type = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE, V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF, V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE, 0, V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR); cxhdl->video_chroma_spatial_filter_type = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE, V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF, V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR, 0, V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR); cxhdl->video_temporal_filter_mode = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE, V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL, V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO, 0, V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL); cxhdl->video_temporal_filter = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER, 0, 31, 1, 8); cxhdl->video_median_filter_type = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE, V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF, V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG, 0, V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF); cxhdl->video_luma_median_filter_bottom = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM, 0, 255, 1, 0); cxhdl->video_luma_median_filter_top = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP, 0, 255, 1, 255); cxhdl->video_chroma_median_filter_bottom = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM, 0, 255, 1, 0); cxhdl->video_chroma_median_filter_top = cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP, 0, 255, 1, 255); cx2341x_ctrl_new_custom(hdl, V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS, 0, 1, 1, 0); if (hdl->error) { int err = hdl->error; v4l2_ctrl_handler_free(hdl); return err; } v4l2_ctrl_cluster(8, &cxhdl->audio_sampling_freq); v4l2_ctrl_cluster(2, &cxhdl->video_b_frames); v4l2_ctrl_cluster(5, &cxhdl->stream_type); v4l2_ctrl_cluster(2, &cxhdl->video_mute); v4l2_ctrl_cluster(3, &cxhdl->video_spatial_filter_mode); v4l2_ctrl_cluster(2, &cxhdl->video_luma_spatial_filter_type); v4l2_ctrl_cluster(2, &cxhdl->video_spatial_filter); v4l2_ctrl_cluster(4, &cxhdl->video_luma_median_filter_top); return 0; } EXPORT_SYMBOL(cx2341x_handler_init); void cx2341x_handler_set_50hz(struct cx2341x_handler *cxhdl, int is_50hz) { cxhdl->is_50hz = is_50hz; cxhdl->video_gop_size->default_value = cxhdl->is_50hz ? 12 : 15; } EXPORT_SYMBOL(cx2341x_handler_set_50hz); int cx2341x_handler_setup(struct cx2341x_handler *cxhdl) { int h = cxhdl->height; int w = cxhdl->width; int err; err = cx2341x_hdl_api(cxhdl, CX2341X_ENC_SET_OUTPUT_PORT, 2, cxhdl->port, 0); if (err) return err; err = cx2341x_hdl_api(cxhdl, CX2341X_ENC_SET_FRAME_RATE, 1, cxhdl->is_50hz); if (err) return err; if (v4l2_ctrl_g_ctrl(cxhdl->video_encoding) == V4L2_MPEG_VIDEO_ENCODING_MPEG_1) { w /= 2; h /= 2; } err = cx2341x_hdl_api(cxhdl, CX2341X_ENC_SET_FRAME_SIZE, 2, h, w); if (err) return err; return v4l2_ctrl_handler_setup(&cxhdl->hdl); } EXPORT_SYMBOL(cx2341x_handler_setup); void cx2341x_handler_set_busy(struct cx2341x_handler *cxhdl, int busy) { v4l2_ctrl_grab(cxhdl->audio_sampling_freq, busy); v4l2_ctrl_grab(cxhdl->audio_encoding, busy); v4l2_ctrl_grab(cxhdl->audio_l2_bitrate, busy); v4l2_ctrl_grab(cxhdl->audio_ac3_bitrate, busy); v4l2_ctrl_grab(cxhdl->stream_vbi_fmt, busy); v4l2_ctrl_grab(cxhdl->stream_type, busy); v4l2_ctrl_grab(cxhdl->video_bitrate_mode, busy); v4l2_ctrl_grab(cxhdl->video_bitrate, busy); v4l2_ctrl_grab(cxhdl->video_bitrate_peak, busy); } EXPORT_SYMBOL(cx2341x_handler_set_busy); |
| 8 8 8 8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Wound/Wait Mutexes: blocking mutual exclusion locks with deadlock avoidance * * Original mutex implementation started by Ingo Molnar: * * Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com> * * Wait/Die implementation: * Copyright (C) 2013 Canonical Ltd. * Choice of algorithm: * Copyright (C) 2018 WMWare Inc. * * This file contains the main data structure and API definitions. */ #ifndef __LINUX_WW_MUTEX_H #define __LINUX_WW_MUTEX_H #include <linux/mutex.h> #include <linux/rtmutex.h> #if defined(CONFIG_DEBUG_MUTEXES) || \ (defined(CONFIG_PREEMPT_RT) && defined(CONFIG_DEBUG_RT_MUTEXES)) #define DEBUG_WW_MUTEXES #endif #ifndef CONFIG_PREEMPT_RT #define WW_MUTEX_BASE mutex #define ww_mutex_base_init(l,n,k) __mutex_init(l,n,k) #define ww_mutex_base_is_locked(b) mutex_is_locked((b)) #else #define WW_MUTEX_BASE rt_mutex #define ww_mutex_base_init(l,n,k) __rt_mutex_init(l,n,k) #define ww_mutex_base_is_locked(b) rt_mutex_base_is_locked(&(b)->rtmutex) #endif struct ww_class { atomic_long_t stamp; struct lock_class_key acquire_key; struct lock_class_key mutex_key; const char *acquire_name; const char *mutex_name; unsigned int is_wait_die; }; struct ww_mutex { struct WW_MUTEX_BASE base; struct ww_acquire_ctx *ctx; #ifdef DEBUG_WW_MUTEXES struct ww_class *ww_class; #endif }; struct ww_acquire_ctx { struct task_struct *task; unsigned long stamp; unsigned int acquired; unsigned short wounded; unsigned short is_wait_die; #ifdef DEBUG_WW_MUTEXES unsigned int done_acquire; struct ww_class *ww_class; void *contending_lock; #endif #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map dep_map; /** * @first_lock_dep_map: fake lockdep_map for first locked ww_mutex. * * lockdep requires the lockdep_map for the first locked ww_mutex * in a ww transaction to remain in memory until all ww_mutexes of * the transaction have been unlocked. Ensure this by keeping a * fake locked ww_mutex lockdep map between ww_acquire_init() and * ww_acquire_fini(). */ struct lockdep_map first_lock_dep_map; #endif #ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH unsigned int deadlock_inject_interval; unsigned int deadlock_inject_countdown; #endif }; #define __WW_CLASS_INITIALIZER(ww_class, _is_wait_die) \ { .stamp = ATOMIC_LONG_INIT(0) \ , .acquire_name = #ww_class "_acquire" \ , .mutex_name = #ww_class "_mutex" \ , .is_wait_die = _is_wait_die } #define DEFINE_WD_CLASS(classname) \ struct ww_class classname = __WW_CLASS_INITIALIZER(classname, 1) #define DEFINE_WW_CLASS(classname) \ struct ww_class classname = __WW_CLASS_INITIALIZER(classname, 0) /** * ww_mutex_init - initialize the w/w mutex * @lock: the mutex to be initialized * @ww_class: the w/w class the mutex should belong to * * Initialize the w/w mutex to unlocked state and associate it with the given * class. Static define macro for w/w mutex is not provided and this function * is the only way to properly initialize the w/w mutex. * * It is not allowed to initialize an already locked mutex. */ static inline void ww_mutex_init(struct ww_mutex *lock, struct ww_class *ww_class) { ww_mutex_base_init(&lock->base, ww_class->mutex_name, &ww_class->mutex_key); lock->ctx = NULL; #ifdef DEBUG_WW_MUTEXES lock->ww_class = ww_class; #endif } /** * ww_acquire_init - initialize a w/w acquire context * @ctx: w/w acquire context to initialize * @ww_class: w/w class of the context * * Initializes an context to acquire multiple mutexes of the given w/w class. * * Context-based w/w mutex acquiring can be done in any order whatsoever within * a given lock class. Deadlocks will be detected and handled with the * wait/die logic. * * Mixing of context-based w/w mutex acquiring and single w/w mutex locking can * result in undetected deadlocks and is so forbidden. Mixing different contexts * for the same w/w class when acquiring mutexes can also result in undetected * deadlocks, and is hence also forbidden. Both types of abuse will be caught by * enabling CONFIG_PROVE_LOCKING. * * Nesting of acquire contexts for _different_ w/w classes is possible, subject * to the usual locking rules between different lock classes. * * An acquire context must be released with ww_acquire_fini by the same task * before the memory is freed. It is recommended to allocate the context itself * on the stack. */ static inline void ww_acquire_init(struct ww_acquire_ctx *ctx, struct ww_class *ww_class) { ctx->task = current; ctx->stamp = atomic_long_inc_return_relaxed(&ww_class->stamp); ctx->acquired = 0; ctx->wounded = false; ctx->is_wait_die = ww_class->is_wait_die; #ifdef DEBUG_WW_MUTEXES ctx->ww_class = ww_class; ctx->done_acquire = 0; ctx->contending_lock = NULL; #endif #ifdef CONFIG_DEBUG_LOCK_ALLOC debug_check_no_locks_freed((void *)ctx, sizeof(*ctx)); lockdep_init_map(&ctx->dep_map, ww_class->acquire_name, &ww_class->acquire_key, 0); lockdep_init_map_wait(&ctx->first_lock_dep_map, ww_class->mutex_name, &ww_class->mutex_key, 0, LD_WAIT_SLEEP); mutex_acquire(&ctx->dep_map, 0, 0, _RET_IP_); mutex_acquire_nest(&ctx->first_lock_dep_map, 0, 0, &ctx->dep_map, _RET_IP_); #endif #ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH ctx->deadlock_inject_interval = 1; ctx->deadlock_inject_countdown = ctx->stamp & 0xf; #endif } /** * ww_acquire_done - marks the end of the acquire phase * @ctx: the acquire context * * Marks the end of the acquire phase, any further w/w mutex lock calls using * this context are forbidden. * * Calling this function is optional, it is just useful to document w/w mutex * code and clearly designated the acquire phase from actually using the locked * data structures. */ static inline void ww_acquire_done(struct ww_acquire_ctx *ctx) { #ifdef DEBUG_WW_MUTEXES lockdep_assert_held(ctx); DEBUG_LOCKS_WARN_ON(ctx->done_acquire); ctx->done_acquire = 1; #endif } /** * ww_acquire_fini - releases a w/w acquire context * @ctx: the acquire context to free * * Releases a w/w acquire context. This must be called _after_ all acquired w/w * mutexes have been released with ww_mutex_unlock. */ static inline void ww_acquire_fini(struct ww_acquire_ctx *ctx) { #ifdef CONFIG_DEBUG_LOCK_ALLOC mutex_release(&ctx->first_lock_dep_map, _THIS_IP_); mutex_release(&ctx->dep_map, _THIS_IP_); #endif #ifdef DEBUG_WW_MUTEXES DEBUG_LOCKS_WARN_ON(ctx->acquired); if (!IS_ENABLED(CONFIG_PROVE_LOCKING)) /* * lockdep will normally handle this, * but fail without anyway */ ctx->done_acquire = 1; if (!IS_ENABLED(CONFIG_DEBUG_LOCK_ALLOC)) /* ensure ww_acquire_fini will still fail if called twice */ ctx->acquired = ~0U; #endif } /** * ww_mutex_lock - acquire the w/w mutex * @lock: the mutex to be acquired * @ctx: w/w acquire context, or NULL to acquire only a single lock. * * Lock the w/w mutex exclusively for this task. * * Deadlocks within a given w/w class of locks are detected and handled with the * wait/die algorithm. If the lock isn't immediately available this function * will either sleep until it is (wait case). Or it selects the current context * for backing off by returning -EDEADLK (die case). Trying to acquire the * same lock with the same context twice is also detected and signalled by * returning -EALREADY. Returns 0 if the mutex was successfully acquired. * * In the die case the caller must release all currently held w/w mutexes for * the given context and then wait for this contending lock to be available by * calling ww_mutex_lock_slow. Alternatively callers can opt to not acquire this * lock and proceed with trying to acquire further w/w mutexes (e.g. when * scanning through lru lists trying to free resources). * * The mutex must later on be released by the same task that * acquired it. The task may not exit without first unlocking the mutex. Also, * kernel memory where the mutex resides must not be freed with the mutex still * locked. The mutex must first be initialized (or statically defined) before it * can be locked. memset()-ing the mutex to 0 is not allowed. The mutex must be * of the same w/w lock class as was used to initialize the acquire context. * * A mutex acquired with this function must be released with ww_mutex_unlock. */ extern int /* __must_check */ ww_mutex_lock(struct ww_mutex *lock, struct ww_acquire_ctx *ctx); /** * ww_mutex_lock_interruptible - acquire the w/w mutex, interruptible * @lock: the mutex to be acquired * @ctx: w/w acquire context * * Lock the w/w mutex exclusively for this task. * * Deadlocks within a given w/w class of locks are detected and handled with the * wait/die algorithm. If the lock isn't immediately available this function * will either sleep until it is (wait case). Or it selects the current context * for backing off by returning -EDEADLK (die case). Trying to acquire the * same lock with the same context twice is also detected and signalled by * returning -EALREADY. Returns 0 if the mutex was successfully acquired. If a * signal arrives while waiting for the lock then this function returns -EINTR. * * In the die case the caller must release all currently held w/w mutexes for * the given context and then wait for this contending lock to be available by * calling ww_mutex_lock_slow_interruptible. Alternatively callers can opt to * not acquire this lock and proceed with trying to acquire further w/w mutexes * (e.g. when scanning through lru lists trying to free resources). * * The mutex must later on be released by the same task that * acquired it. The task may not exit without first unlocking the mutex. Also, * kernel memory where the mutex resides must not be freed with the mutex still * locked. The mutex must first be initialized (or statically defined) before it * can be locked. memset()-ing the mutex to 0 is not allowed. The mutex must be * of the same w/w lock class as was used to initialize the acquire context. * * A mutex acquired with this function must be released with ww_mutex_unlock. */ extern int __must_check ww_mutex_lock_interruptible(struct ww_mutex *lock, struct ww_acquire_ctx *ctx); /** * ww_mutex_lock_slow - slowpath acquiring of the w/w mutex * @lock: the mutex to be acquired * @ctx: w/w acquire context * * Acquires a w/w mutex with the given context after a die case. This function * will sleep until the lock becomes available. * * The caller must have released all w/w mutexes already acquired with the * context and then call this function on the contended lock. * * Afterwards the caller may continue to (re)acquire the other w/w mutexes it * needs with ww_mutex_lock. Note that the -EALREADY return code from * ww_mutex_lock can be used to avoid locking this contended mutex twice. * * It is forbidden to call this function with any other w/w mutexes associated * with the context held. It is forbidden to call this on anything else than the * contending mutex. * * Note that the slowpath lock acquiring can also be done by calling * ww_mutex_lock directly. This function here is simply to help w/w mutex * locking code readability by clearly denoting the slowpath. */ static inline void ww_mutex_lock_slow(struct ww_mutex *lock, struct ww_acquire_ctx *ctx) { int ret; #ifdef DEBUG_WW_MUTEXES DEBUG_LOCKS_WARN_ON(!ctx->contending_lock); #endif ret = ww_mutex_lock(lock, ctx); (void)ret; } /** * ww_mutex_lock_slow_interruptible - slowpath acquiring of the w/w mutex, interruptible * @lock: the mutex to be acquired * @ctx: w/w acquire context * * Acquires a w/w mutex with the given context after a die case. This function * will sleep until the lock becomes available and returns 0 when the lock has * been acquired. If a signal arrives while waiting for the lock then this * function returns -EINTR. * * The caller must have released all w/w mutexes already acquired with the * context and then call this function on the contended lock. * * Afterwards the caller may continue to (re)acquire the other w/w mutexes it * needs with ww_mutex_lock. Note that the -EALREADY return code from * ww_mutex_lock can be used to avoid locking this contended mutex twice. * * It is forbidden to call this function with any other w/w mutexes associated * with the given context held. It is forbidden to call this on anything else * than the contending mutex. * * Note that the slowpath lock acquiring can also be done by calling * ww_mutex_lock_interruptible directly. This function here is simply to help * w/w mutex locking code readability by clearly denoting the slowpath. */ static inline int __must_check ww_mutex_lock_slow_interruptible(struct ww_mutex *lock, struct ww_acquire_ctx *ctx) { #ifdef DEBUG_WW_MUTEXES DEBUG_LOCKS_WARN_ON(!ctx->contending_lock); #endif return ww_mutex_lock_interruptible(lock, ctx); } extern void ww_mutex_unlock(struct ww_mutex *lock); extern int __must_check ww_mutex_trylock(struct ww_mutex *lock, struct ww_acquire_ctx *ctx); /*** * ww_mutex_destroy - mark a w/w mutex unusable * @lock: the mutex to be destroyed * * This function marks the mutex uninitialized, and any subsequent * use of the mutex is forbidden. The mutex must not be locked when * this function is called. */ static inline void ww_mutex_destroy(struct ww_mutex *lock) { #ifndef CONFIG_PREEMPT_RT mutex_destroy(&lock->base); #endif } /** * ww_mutex_is_locked - is the w/w mutex locked * @lock: the mutex to be queried * * Returns 1 if the mutex is locked, 0 if unlocked. */ static inline bool ww_mutex_is_locked(struct ww_mutex *lock) { return ww_mutex_base_is_locked(&lock->base); } #endif |
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1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 | /* SPDX-License-Identifier: GPL-2.0-only */ /* * Media entity * * Copyright (C) 2010 Nokia Corporation * * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> * Sakari Ailus <sakari.ailus@iki.fi> */ #ifndef _MEDIA_ENTITY_H #define _MEDIA_ENTITY_H #include <linux/bitmap.h> #include <linux/bug.h> #include <linux/container_of.h> #include <linux/fwnode.h> #include <linux/list.h> #include <linux/media.h> #include <linux/minmax.h> #include <linux/types.h> /* Enums used internally at the media controller to represent graphs */ /** * enum media_gobj_type - type of a graph object * * @MEDIA_GRAPH_ENTITY: Identify a media entity * @MEDIA_GRAPH_PAD: Identify a media pad * @MEDIA_GRAPH_LINK: Identify a media link * @MEDIA_GRAPH_INTF_DEVNODE: Identify a media Kernel API interface via * a device node */ enum media_gobj_type { MEDIA_GRAPH_ENTITY, MEDIA_GRAPH_PAD, MEDIA_GRAPH_LINK, MEDIA_GRAPH_INTF_DEVNODE, }; #define MEDIA_BITS_PER_TYPE 8 #define MEDIA_BITS_PER_ID (32 - MEDIA_BITS_PER_TYPE) #define MEDIA_ID_MASK GENMASK_ULL(MEDIA_BITS_PER_ID - 1, 0) /* Structs to represent the objects that belong to a media graph */ /** * struct media_gobj - Define a graph object. * * @mdev: Pointer to the struct &media_device that owns the object * @id: Non-zero object ID identifier. The ID should be unique * inside a media_device, as it is composed by * %MEDIA_BITS_PER_TYPE to store the type plus * %MEDIA_BITS_PER_ID to store the ID * @list: List entry stored in one of the per-type mdev object lists * * All objects on the media graph should have this struct embedded */ struct media_gobj { struct media_device *mdev; u32 id; struct list_head list; }; #define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 /** * struct media_entity_enum - An enumeration of media entities. * * @bmap: Bit map in which each bit represents one entity at struct * media_entity->internal_idx. * @idx_max: Number of bits in bmap */ struct media_entity_enum { unsigned long *bmap; int idx_max; }; /** * struct media_graph - Media graph traversal state * * @stack: Graph traversal stack; the stack contains information * on the path the media entities to be walked and the * links through which they were reached. * @stack.entity: pointer to &struct media_entity at the graph. * @stack.link: pointer to &struct list_head. * @ent_enum: Visited entities * @top: The top of the stack */ struct media_graph { struct { struct media_entity *entity; struct list_head *link; } stack[MEDIA_ENTITY_ENUM_MAX_DEPTH]; struct media_entity_enum ent_enum; int top; }; /** * struct media_pipeline - Media pipeline related information * * @allocated: Media pipeline allocated and freed by the framework * @mdev: The media device the pipeline is part of * @pads: List of media_pipeline_pad * @start_count: Media pipeline start - stop count */ struct media_pipeline { bool allocated; struct media_device *mdev; struct list_head pads; int start_count; }; /** * struct media_pipeline_pad - A pad part of a media pipeline * * @list: Entry in the media_pad pads list * @pipe: The media_pipeline that the pad is part of * @pad: The media pad * * This structure associate a pad with a media pipeline. Instances of * media_pipeline_pad are created by media_pipeline_start() when it builds the * pipeline, and stored in the &media_pad.pads list. media_pipeline_stop() * removes the entries from the list and deletes them. */ struct media_pipeline_pad { struct list_head list; struct media_pipeline *pipe; struct media_pad *pad; }; /** * struct media_pipeline_pad_iter - Iterator for media_pipeline_for_each_pad * * @cursor: The current element */ struct media_pipeline_pad_iter { struct list_head *cursor; }; /** * struct media_pipeline_entity_iter - Iterator for media_pipeline_for_each_entity * * @ent_enum: The entity enumeration tracker * @cursor: The current element */ struct media_pipeline_entity_iter { struct media_entity_enum ent_enum; struct list_head *cursor; }; /** * struct media_link - A link object part of a media graph. * * @graph_obj: Embedded structure containing the media object common data * @list: Linked list associated with an entity or an interface that * owns the link. * @gobj0: Part of a union. Used to get the pointer for the first * graph_object of the link. * @source: Part of a union. Used only if the first object (gobj0) is * a pad. In that case, it represents the source pad. * @intf: Part of a union. Used only if the first object (gobj0) is * an interface. * @gobj1: Part of a union. Used to get the pointer for the second * graph_object of the link. * @sink: Part of a union. Used only if the second object (gobj1) is * a pad. In that case, it represents the sink pad. * @entity: Part of a union. Used only if the second object (gobj1) is * an entity. * @reverse: Pointer to the link for the reverse direction of a pad to pad * link. * @flags: Link flags, as defined in uapi/media.h (MEDIA_LNK_FL_*) * @is_backlink: Indicate if the link is a backlink. */ struct media_link { struct media_gobj graph_obj; struct list_head list; union { struct media_gobj *gobj0; struct media_pad *source; struct media_interface *intf; }; union { struct media_gobj *gobj1; struct media_pad *sink; struct media_entity *entity; }; struct media_link *reverse; unsigned long flags; bool is_backlink; }; /** * enum media_pad_signal_type - type of the signal inside a media pad * * @PAD_SIGNAL_DEFAULT: * Default signal. Use this when all inputs or all outputs are * uniquely identified by the pad number. * @PAD_SIGNAL_ANALOG: * The pad contains an analog signal. It can be Radio Frequency, * Intermediate Frequency, a baseband signal or sub-carriers. * Tuner inputs, IF-PLL demodulators, composite and s-video signals * should use it. * @PAD_SIGNAL_DV: * Contains a digital video signal, with can be a bitstream of samples * taken from an analog TV video source. On such case, it usually * contains the VBI data on it. * @PAD_SIGNAL_AUDIO: * Contains an Intermediate Frequency analog signal from an audio * sub-carrier or an audio bitstream. IF signals are provided by tuners * and consumed by audio AM/FM decoders. Bitstream audio is provided by * an audio decoder. */ enum media_pad_signal_type { PAD_SIGNAL_DEFAULT = 0, PAD_SIGNAL_ANALOG, PAD_SIGNAL_DV, PAD_SIGNAL_AUDIO, }; /** * struct media_pad - A media pad graph object. * * @graph_obj: Embedded structure containing the media object common data * @entity: Entity this pad belongs to * @index: Pad index in the entity pads array, numbered from 0 to n * @num_links: Number of links connected to this pad * @sig_type: Type of the signal inside a media pad * @flags: Pad flags, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * (seek for ``MEDIA_PAD_FL_*``) * @pipe: Pipeline this pad belongs to. Use media_entity_pipeline() to * access this field. */ struct media_pad { struct media_gobj graph_obj; /* must be first field in struct */ struct media_entity *entity; u16 index; u16 num_links; enum media_pad_signal_type sig_type; unsigned long flags; /* * The fields below are private, and should only be accessed via * appropriate functions. */ struct media_pipeline *pipe; }; /** * struct media_entity_operations - Media entity operations * @get_fwnode_pad: Return the pad number based on a fwnode endpoint or * a negative value on error. This operation can be used * to map a fwnode to a media pad number. Optional. * @link_setup: Notify the entity of link changes. The operation can * return an error, in which case link setup will be * cancelled. Optional. * @link_validate: Return whether a link is valid from the entity point of * view. The media_pipeline_start() function * validates all links by calling this operation. Optional. * @has_pad_interdep: Return whether two pads of the entity are * interdependent. If two pads are interdependent they are * part of the same pipeline and enabling one of the pads * means that the other pad will become "locked" and * doesn't allow configuration changes. pad0 and pad1 are * guaranteed to not both be sinks or sources. Never call * the .has_pad_interdep() operation directly, always use * media_entity_has_pad_interdep(). * Optional: If the operation isn't implemented all pads * will be considered as interdependent. * * .. note:: * * Those these callbacks are called with struct &media_device.graph_mutex * mutex held. */ struct media_entity_operations { int (*get_fwnode_pad)(struct media_entity *entity, struct fwnode_endpoint *endpoint); int (*link_setup)(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags); int (*link_validate)(struct media_link *link); bool (*has_pad_interdep)(struct media_entity *entity, unsigned int pad0, unsigned int pad1); }; /** * enum media_entity_type - Media entity type * * @MEDIA_ENTITY_TYPE_BASE: * The entity isn't embedded in another subsystem structure. * @MEDIA_ENTITY_TYPE_VIDEO_DEVICE: * The entity is embedded in a struct video_device instance. * @MEDIA_ENTITY_TYPE_V4L2_SUBDEV: * The entity is embedded in a struct v4l2_subdev instance. * * Media entity objects are often not instantiated directly, but the media * entity structure is inherited by (through embedding) other subsystem-specific * structures. The media entity type identifies the type of the subclass * structure that implements a media entity instance. * * This allows runtime type identification of media entities and safe casting to * the correct object type. For instance, a media entity structure instance * embedded in a v4l2_subdev structure instance will have the type * %MEDIA_ENTITY_TYPE_V4L2_SUBDEV and can safely be cast to a &v4l2_subdev * structure using the container_of() macro. */ enum media_entity_type { MEDIA_ENTITY_TYPE_BASE, MEDIA_ENTITY_TYPE_VIDEO_DEVICE, MEDIA_ENTITY_TYPE_V4L2_SUBDEV, }; /** * struct media_entity - A media entity graph object. * * @graph_obj: Embedded structure containing the media object common data. * @name: Entity name. * @obj_type: Type of the object that implements the media_entity. * @function: Entity main function, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * (seek for ``MEDIA_ENT_F_*``) * @flags: Entity flags, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * (seek for ``MEDIA_ENT_FL_*``) * @num_pads: Number of sink and source pads. * @num_links: Total number of links, forward and back, enabled and disabled. * @num_backlinks: Number of backlinks * @internal_idx: An unique internal entity specific number. The numbers are * re-used if entities are unregistered or registered again. * @pads: Pads array with the size defined by @num_pads. * @links: List of data links. * @ops: Entity operations. * @use_count: Use count for the entity. * @info: Union with devnode information. Kept just for backward * compatibility. * @info.dev: Contains device major and minor info. * @info.dev.major: device node major, if the device is a devnode. * @info.dev.minor: device node minor, if the device is a devnode. * * .. note:: * * The @use_count reference count must never be negative, but is a signed * integer on purpose: a simple ``WARN_ON(<0)`` check can be used to detect * reference count bugs that would make it negative. */ struct media_entity { struct media_gobj graph_obj; /* must be first field in struct */ const char *name; enum media_entity_type obj_type; u32 function; unsigned long flags; u16 num_pads; u16 num_links; u16 num_backlinks; int internal_idx; struct media_pad *pads; struct list_head links; const struct media_entity_operations *ops; int use_count; union { struct { u32 major; u32 minor; } dev; } info; }; /** * media_entity_for_each_pad - Iterate on all pads in an entity * @entity: The entity the pads belong to * @iter: The iterator pad * * Iterate on all pads in a media entity. */ #define media_entity_for_each_pad(entity, iter) \ for (iter = (entity)->pads; \ iter < &(entity)->pads[(entity)->num_pads]; \ ++iter) /** * struct media_interface - A media interface graph object. * * @graph_obj: embedded graph object * @links: List of links pointing to graph entities * @type: Type of the interface as defined in * :ref:`include/uapi/linux/media.h <media_header>` * (seek for ``MEDIA_INTF_T_*``) * @flags: Interface flags as defined in * :ref:`include/uapi/linux/media.h <media_header>` * (seek for ``MEDIA_INTF_FL_*``) * * .. note:: * * Currently, no flags for &media_interface is defined. */ struct media_interface { struct media_gobj graph_obj; struct list_head links; u32 type; u32 flags; }; /** * struct media_intf_devnode - A media interface via a device node. * * @intf: embedded interface object * @major: Major number of a device node * @minor: Minor number of a device node */ struct media_intf_devnode { struct media_interface intf; /* Should match the fields at media_v2_intf_devnode */ u32 major; u32 minor; }; /** * media_entity_id() - return the media entity graph object id * * @entity: pointer to &media_entity */ static inline u32 media_entity_id(struct media_entity *entity) { return entity->graph_obj.id; } /** * media_type() - return the media object type * * @gobj: Pointer to the struct &media_gobj graph object */ static inline enum media_gobj_type media_type(struct media_gobj *gobj) { return gobj->id >> MEDIA_BITS_PER_ID; } /** * media_id() - return the media object ID * * @gobj: Pointer to the struct &media_gobj graph object */ static inline u32 media_id(struct media_gobj *gobj) { return gobj->id & MEDIA_ID_MASK; } /** * media_gobj_gen_id() - encapsulates type and ID on at the object ID * * @type: object type as define at enum &media_gobj_type. * @local_id: next ID, from struct &media_device.id. */ static inline u32 media_gobj_gen_id(enum media_gobj_type type, u64 local_id) { u32 id; id = type << MEDIA_BITS_PER_ID; id |= local_id & MEDIA_ID_MASK; return id; } /** * is_media_entity_v4l2_video_device() - Check if the entity is a video_device * @entity: pointer to entity * * Return: %true if the entity is an instance of a video_device object and can * safely be cast to a struct video_device using the container_of() macro, or * %false otherwise. */ static inline bool is_media_entity_v4l2_video_device(struct media_entity *entity) { return entity && entity->obj_type == MEDIA_ENTITY_TYPE_VIDEO_DEVICE; } /** * is_media_entity_v4l2_subdev() - Check if the entity is a v4l2_subdev * @entity: pointer to entity * * Return: %true if the entity is an instance of a &v4l2_subdev object and can * safely be cast to a struct &v4l2_subdev using the container_of() macro, or * %false otherwise. */ static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity) { return entity && entity->obj_type == MEDIA_ENTITY_TYPE_V4L2_SUBDEV; } /** * media_entity_enum_init - Initialise an entity enumeration * * @ent_enum: Entity enumeration to be initialised * @mdev: The related media device * * Return: zero on success or a negative error code. */ __must_check int media_entity_enum_init(struct media_entity_enum *ent_enum, struct media_device *mdev); /** * media_entity_enum_cleanup - Release resources of an entity enumeration * * @ent_enum: Entity enumeration to be released */ void media_entity_enum_cleanup(struct media_entity_enum *ent_enum); /** * media_entity_enum_zero - Clear the entire enum * * @ent_enum: Entity enumeration to be cleared */ static inline void media_entity_enum_zero(struct media_entity_enum *ent_enum) { bitmap_zero(ent_enum->bmap, ent_enum->idx_max); } /** * media_entity_enum_set - Mark a single entity in the enum * * @ent_enum: Entity enumeration * @entity: Entity to be marked */ static inline void media_entity_enum_set(struct media_entity_enum *ent_enum, struct media_entity *entity) { if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) return; __set_bit(entity->internal_idx, ent_enum->bmap); } /** * media_entity_enum_clear - Unmark a single entity in the enum * * @ent_enum: Entity enumeration * @entity: Entity to be unmarked */ static inline void media_entity_enum_clear(struct media_entity_enum *ent_enum, struct media_entity *entity) { if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) return; __clear_bit(entity->internal_idx, ent_enum->bmap); } /** * media_entity_enum_test - Test whether the entity is marked * * @ent_enum: Entity enumeration * @entity: Entity to be tested * * Returns %true if the entity was marked. */ static inline bool media_entity_enum_test(struct media_entity_enum *ent_enum, struct media_entity *entity) { if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) return true; return test_bit(entity->internal_idx, ent_enum->bmap); } /** * media_entity_enum_test_and_set - Test whether the entity is marked, * and mark it * * @ent_enum: Entity enumeration * @entity: Entity to be tested * * Returns %true if the entity was marked, and mark it before doing so. */ static inline bool media_entity_enum_test_and_set(struct media_entity_enum *ent_enum, struct media_entity *entity) { if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) return true; return __test_and_set_bit(entity->internal_idx, ent_enum->bmap); } /** * media_entity_enum_empty - Test whether the entire enum is empty * * @ent_enum: Entity enumeration * * Return: %true if the entity was empty. */ static inline bool media_entity_enum_empty(struct media_entity_enum *ent_enum) { return bitmap_empty(ent_enum->bmap, ent_enum->idx_max); } /** * media_entity_enum_intersects - Test whether two enums intersect * * @ent_enum1: First entity enumeration * @ent_enum2: Second entity enumeration * * Return: %true if entity enumerations @ent_enum1 and @ent_enum2 intersect, * otherwise %false. */ static inline bool media_entity_enum_intersects( struct media_entity_enum *ent_enum1, struct media_entity_enum *ent_enum2) { WARN_ON(ent_enum1->idx_max != ent_enum2->idx_max); return bitmap_intersects(ent_enum1->bmap, ent_enum2->bmap, min(ent_enum1->idx_max, ent_enum2->idx_max)); } /** * gobj_to_entity - returns the struct &media_entity pointer from the * @gobj contained on it. * * @gobj: Pointer to the struct &media_gobj graph object */ #define gobj_to_entity(gobj) \ container_of(gobj, struct media_entity, graph_obj) /** * gobj_to_pad - returns the struct &media_pad pointer from the * @gobj contained on it. * * @gobj: Pointer to the struct &media_gobj graph object */ #define gobj_to_pad(gobj) \ container_of(gobj, struct media_pad, graph_obj) /** * gobj_to_link - returns the struct &media_link pointer from the * @gobj contained on it. * * @gobj: Pointer to the struct &media_gobj graph object */ #define gobj_to_link(gobj) \ container_of(gobj, struct media_link, graph_obj) /** * gobj_to_intf - returns the struct &media_interface pointer from the * @gobj contained on it. * * @gobj: Pointer to the struct &media_gobj graph object */ #define gobj_to_intf(gobj) \ container_of(gobj, struct media_interface, graph_obj) /** * intf_to_devnode - returns the struct media_intf_devnode pointer from the * @intf contained on it. * * @intf: Pointer to struct &media_intf_devnode */ #define intf_to_devnode(intf) \ container_of(intf, struct media_intf_devnode, intf) /** * media_gobj_create - Initialize a graph object * * @mdev: Pointer to the &media_device that contains the object * @type: Type of the object * @gobj: Pointer to the struct &media_gobj graph object * * This routine initializes the embedded struct &media_gobj inside a * media graph object. It is called automatically if ``media_*_create`` * function calls are used. However, if the object (entity, link, pad, * interface) is embedded on some other object, this function should be * called before registering the object at the media controller. */ void media_gobj_create(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj); /** * media_gobj_destroy - Stop using a graph object on a media device * * @gobj: Pointer to the struct &media_gobj graph object * * This should be called by all routines like media_device_unregister() * that remove/destroy media graph objects. */ void media_gobj_destroy(struct media_gobj *gobj); /** * media_entity_pads_init() - Initialize the entity pads * * @entity: entity where the pads belong * @num_pads: total number of sink and source pads * @pads: Array of @num_pads pads. * * The pads array is managed by the entity driver and passed to * media_entity_pads_init() where its pointer will be stored in the * &media_entity structure. * * If no pads are needed, drivers could either directly fill * &media_entity->num_pads with 0 and &media_entity->pads with %NULL or call * this function that will do the same. * * As the number of pads is known in advance, the pads array is not allocated * dynamically but is managed by the entity driver. Most drivers will embed the * pads array in a driver-specific structure, avoiding dynamic allocation. * * Drivers must set the direction of every pad in the pads array before calling * media_entity_pads_init(). The function will initialize the other pads fields. */ int media_entity_pads_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); /** * media_entity_cleanup() - free resources associated with an entity * * @entity: entity where the pads belong * * This function must be called during the cleanup phase after unregistering * the entity (currently, it does nothing). * * Calling media_entity_cleanup() on a media_entity whose memory has been * zeroed but that has not been initialized with media_entity_pad_init() is * valid and is a no-op. */ #if IS_ENABLED(CONFIG_MEDIA_CONTROLLER) static inline void media_entity_cleanup(struct media_entity *entity) {} #else #define media_entity_cleanup(entity) do { } while (false) #endif /** * media_get_pad_index() - retrieves a pad index from an entity * * @entity: entity where the pads belong * @pad_type: the type of the pad, one of MEDIA_PAD_FL_* pad types * @sig_type: type of signal of the pad to be search * * This helper function finds the first pad index inside an entity that * satisfies both @is_sink and @sig_type conditions. * * Return: * * On success, return the pad number. If the pad was not found or the media * entity is a NULL pointer, return -EINVAL. */ int media_get_pad_index(struct media_entity *entity, u32 pad_type, enum media_pad_signal_type sig_type); /** * media_create_pad_link() - creates a link between two entities. * * @source: pointer to &media_entity of the source pad. * @source_pad: number of the source pad in the pads array * @sink: pointer to &media_entity of the sink pad. * @sink_pad: number of the sink pad in the pads array. * @flags: Link flags, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * ( seek for ``MEDIA_LNK_FL_*``) * * Valid values for flags: * * %MEDIA_LNK_FL_ENABLED * Indicates that the link is enabled and can be used to transfer media data. * When two or more links target a sink pad, only one of them can be * enabled at a time. * * %MEDIA_LNK_FL_IMMUTABLE * Indicates that the link enabled state can't be modified at runtime. If * %MEDIA_LNK_FL_IMMUTABLE is set, then %MEDIA_LNK_FL_ENABLED must also be * set, since an immutable link is always enabled. * * .. note:: * * Before calling this function, media_entity_pads_init() and * media_device_register_entity() should be called previously for both ends. */ __must_check int media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, u16 sink_pad, u32 flags); /** * media_create_pad_links() - creates a link between two entities. * * @mdev: Pointer to the media_device that contains the object * @source_function: Function of the source entities. Used only if @source is * NULL. * @source: pointer to &media_entity of the source pad. If NULL, it will use * all entities that matches the @sink_function. * @source_pad: number of the source pad in the pads array * @sink_function: Function of the sink entities. Used only if @sink is NULL. * @sink: pointer to &media_entity of the sink pad. If NULL, it will use * all entities that matches the @sink_function. * @sink_pad: number of the sink pad in the pads array. * @flags: Link flags, as defined in include/uapi/linux/media.h. * @allow_both_undefined: if %true, then both @source and @sink can be NULL. * In such case, it will create a crossbar between all entities that * matches @source_function to all entities that matches @sink_function. * If %false, it will return 0 and won't create any link if both @source * and @sink are NULL. * * Valid values for flags: * * A %MEDIA_LNK_FL_ENABLED flag indicates that the link is enabled and can be * used to transfer media data. If multiple links are created and this * flag is passed as an argument, only the first created link will have * this flag. * * A %MEDIA_LNK_FL_IMMUTABLE flag indicates that the link enabled state can't * be modified at runtime. If %MEDIA_LNK_FL_IMMUTABLE is set, then * %MEDIA_LNK_FL_ENABLED must also be set since an immutable link is * always enabled. * * It is common for some devices to have multiple source and/or sink entities * of the same type that should be linked. While media_create_pad_link() * creates link by link, this function is meant to allow 1:n, n:1 and even * cross-bar (n:n) links. * * .. note:: * * Before calling this function, media_entity_pads_init() and * media_device_register_entity() should be called previously for the * entities to be linked. */ int media_create_pad_links(const struct media_device *mdev, const u32 source_function, struct media_entity *source, const u16 source_pad, const u32 sink_function, struct media_entity *sink, const u16 sink_pad, u32 flags, const bool allow_both_undefined); void __media_entity_remove_links(struct media_entity *entity); /** * media_entity_remove_links() - remove all links associated with an entity * * @entity: pointer to &media_entity * * .. note:: * * This is called automatically when an entity is unregistered via * media_device_register_entity(). */ void media_entity_remove_links(struct media_entity *entity); /** * __media_entity_setup_link - Configure a media link without locking * @link: The link being configured * @flags: Link configuration flags * * The bulk of link setup is handled by the two entities connected through the * link. This function notifies both entities of the link configuration change. * * If the link is immutable or if the current and new configuration are * identical, return immediately. * * The user is expected to hold link->source->parent->mutex. If not, * media_entity_setup_link() should be used instead. */ int __media_entity_setup_link(struct media_link *link, u32 flags); /** * media_entity_setup_link() - changes the link flags properties in runtime * * @link: pointer to &media_link * @flags: the requested new link flags * * The only configurable property is the %MEDIA_LNK_FL_ENABLED link flag * to enable/disable a link. Links marked with the * %MEDIA_LNK_FL_IMMUTABLE link flag can not be enabled or disabled. * * When a link is enabled or disabled, the media framework calls the * link_setup operation for the two entities at the source and sink of the * link, in that order. If the second link_setup call fails, another * link_setup call is made on the first entity to restore the original link * flags. * * Media device drivers can be notified of link setup operations by setting the * &media_device.link_notify pointer to a callback function. If provided, the * notification callback will be called before enabling and after disabling * links. * * Entity drivers must implement the link_setup operation if any of their links * is non-immutable. The operation must either configure the hardware or store * the configuration information to be applied later. * * Link configuration must not have any side effect on other links. If an * enabled link at a sink pad prevents another link at the same pad from * being enabled, the link_setup operation must return %-EBUSY and can't * implicitly disable the first enabled link. * * .. note:: * * The valid values of the flags for the link is the same as described * on media_create_pad_link(), for pad to pad links or the same as described * on media_create_intf_link(), for interface to entity links. */ int media_entity_setup_link(struct media_link *link, u32 flags); /** * media_entity_find_link - Find a link between two pads * @source: Source pad * @sink: Sink pad * * Return: returns a pointer to the link between the two entities. If no * such link exists, return %NULL. */ struct media_link *media_entity_find_link(struct media_pad *source, struct media_pad *sink); /** * media_pad_remote_pad_first - Find the first pad at the remote end of a link * @pad: Pad at the local end of the link * * Search for a remote pad connected to the given pad by iterating over all * links originating or terminating at that pad until an enabled link is found. * * Return: returns a pointer to the pad at the remote end of the first found * enabled link, or %NULL if no enabled link has been found. */ struct media_pad *media_pad_remote_pad_first(const struct media_pad *pad); /** * media_pad_remote_pad_unique - Find a remote pad connected to a pad * @pad: The pad * * Search for and return a remote pad connected to @pad through an enabled * link. If multiple (or no) remote pads are found, an error is returned. * * The uniqueness constraint makes this helper function suitable for entities * that support a single active source at a time on a given pad. * * Return: A pointer to the remote pad, or one of the following error pointers * if an error occurs: * * * -ENOTUNIQ - Multiple links are enabled * * -ENOLINK - No connected pad found */ struct media_pad *media_pad_remote_pad_unique(const struct media_pad *pad); /** * media_entity_remote_pad_unique - Find a remote pad connected to an entity * @entity: The entity * @type: The type of pad to find (MEDIA_PAD_FL_SINK or MEDIA_PAD_FL_SOURCE) * * Search for and return a remote pad of @type connected to @entity through an * enabled link. If multiple (or no) remote pads match these criteria, an error * is returned. * * The uniqueness constraint makes this helper function suitable for entities * that support a single active source or sink at a time. * * Return: A pointer to the remote pad, or one of the following error pointers * if an error occurs: * * * -ENOTUNIQ - Multiple links are enabled * * -ENOLINK - No connected pad found */ struct media_pad * media_entity_remote_pad_unique(const struct media_entity *entity, unsigned int type); /** * media_entity_remote_source_pad_unique - Find a remote source pad connected to * an entity * @entity: The entity * * Search for and return a remote source pad connected to @entity through an * enabled link. If multiple (or no) remote pads match these criteria, an error * is returned. * * The uniqueness constraint makes this helper function suitable for entities * that support a single active source at a time. * * Return: A pointer to the remote pad, or one of the following error pointers * if an error occurs: * * * -ENOTUNIQ - Multiple links are enabled * * -ENOLINK - No connected pad found */ static inline struct media_pad * media_entity_remote_source_pad_unique(const struct media_entity *entity) { return media_entity_remote_pad_unique(entity, MEDIA_PAD_FL_SOURCE); } /** * media_pad_is_streaming - Test if a pad is part of a streaming pipeline * @pad: The pad * * Return: True if the pad is part of a pipeline started with the * media_pipeline_start() function, false otherwise. */ static inline bool media_pad_is_streaming(const struct media_pad *pad) { return pad->pipe; } /** * media_entity_is_streaming - Test if an entity is part of a streaming pipeline * @entity: The entity * * Return: True if the entity is part of a pipeline started with the * media_pipeline_start() function, false otherwise. */ static inline bool media_entity_is_streaming(const struct media_entity *entity) { struct media_pad *pad; media_entity_for_each_pad(entity, pad) { if (media_pad_is_streaming(pad)) return true; } return false; } /** * media_entity_pipeline - Get the media pipeline an entity is part of * @entity: The entity * * DEPRECATED: use media_pad_pipeline() instead. * * This function returns the media pipeline that an entity has been associated * with when constructing the pipeline with media_pipeline_start(). The pointer * remains valid until media_pipeline_stop() is called. * * In general, entities can be part of multiple pipelines, when carrying * multiple streams (either on different pads, or on the same pad using * multiplexed streams). This function is to be used only for entities that * do not support multiple pipelines. * * Return: The media_pipeline the entity is part of, or NULL if the entity is * not part of any pipeline. */ struct media_pipeline *media_entity_pipeline(struct media_entity *entity); /** * media_pad_pipeline - Get the media pipeline a pad is part of * @pad: The pad * * This function returns the media pipeline that a pad has been associated * with when constructing the pipeline with media_pipeline_start(). The pointer * remains valid until media_pipeline_stop() is called. * * Return: The media_pipeline the pad is part of, or NULL if the pad is * not part of any pipeline. */ struct media_pipeline *media_pad_pipeline(struct media_pad *pad); /** * media_entity_get_fwnode_pad - Get pad number from fwnode * * @entity: The entity * @fwnode: Pointer to the fwnode_handle which should be used to find the pad * @direction_flags: Expected direction of the pad, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * (seek for ``MEDIA_PAD_FL_*``) * * This function can be used to resolve the media pad number from * a fwnode. This is useful for devices which use more complex * mappings of media pads. * * If the entity does not implement the get_fwnode_pad() operation * then this function searches the entity for the first pad that * matches the @direction_flags. * * Return: returns the pad number on success or a negative error code. */ int media_entity_get_fwnode_pad(struct media_entity *entity, const struct fwnode_handle *fwnode, unsigned long direction_flags); /** * media_graph_walk_init - Allocate resources used by graph walk. * * @graph: Media graph structure that will be used to walk the graph * @mdev: Pointer to the &media_device that contains the object * * This function is deprecated, use media_pipeline_for_each_pad() instead. * * The caller is required to hold the media_device graph_mutex during the graph * walk until the graph state is released. * * Returns zero on success or a negative error code otherwise. */ __must_check int media_graph_walk_init( struct media_graph *graph, struct media_device *mdev); /** * media_graph_walk_cleanup - Release resources used by graph walk. * * @graph: Media graph structure that will be used to walk the graph * * This function is deprecated, use media_pipeline_for_each_pad() instead. */ void media_graph_walk_cleanup(struct media_graph *graph); /** * media_graph_walk_start - Start walking the media graph at a * given entity * * @graph: Media graph structure that will be used to walk the graph * @entity: Starting entity * * This function is deprecated, use media_pipeline_for_each_pad() instead. * * Before using this function, media_graph_walk_init() must be * used to allocate resources used for walking the graph. This * function initializes the graph traversal structure to walk the * entities graph starting at the given entity. The traversal * structure must not be modified by the caller during graph * traversal. After the graph walk, the resources must be released * using media_graph_walk_cleanup(). */ void media_graph_walk_start(struct media_graph *graph, struct media_entity *entity); /** * media_graph_walk_next - Get the next entity in the graph * @graph: Media graph structure * * This function is deprecated, use media_pipeline_for_each_pad() instead. * * Perform a depth-first traversal of the given media entities graph. * * The graph structure must have been previously initialized with a call to * media_graph_walk_start(). * * Return: returns the next entity in the graph or %NULL if the whole graph * have been traversed. */ struct media_entity *media_graph_walk_next(struct media_graph *graph); /** * media_pipeline_start - Mark a pipeline as streaming * @origin: Starting pad * @pipe: Media pipeline to be assigned to all pads in the pipeline. * * Mark all pads connected to pad @origin through enabled links, either * directly or indirectly, as streaming. The given pipeline object is assigned * to every pad in the pipeline and stored in the media_pad pipe field. * * Calls to this function can be nested, in which case the same number of * media_pipeline_stop() calls will be required to stop streaming. The * pipeline pointer must be identical for all nested calls to * media_pipeline_start(). */ __must_check int media_pipeline_start(struct media_pad *origin, struct media_pipeline *pipe); /** * __media_pipeline_start - Mark a pipeline as streaming * * @origin: Starting pad * @pipe: Media pipeline to be assigned to all pads in the pipeline. * * ..note:: This is the non-locking version of media_pipeline_start() */ __must_check int __media_pipeline_start(struct media_pad *origin, struct media_pipeline *pipe); /** * media_pipeline_stop - Mark a pipeline as not streaming * @pad: Starting pad * * Mark all pads connected to a given pad through enabled links, either * directly or indirectly, as not streaming. The media_pad pipe field is * reset to %NULL. * * If multiple calls to media_pipeline_start() have been made, the same * number of calls to this function are required to mark the pipeline as not * streaming. */ void media_pipeline_stop(struct media_pad *pad); /** * __media_pipeline_stop - Mark a pipeline as not streaming * * @pad: Starting pad * * .. note:: This is the non-locking version of media_pipeline_stop() */ void __media_pipeline_stop(struct media_pad *pad); struct media_pad * __media_pipeline_pad_iter_next(struct media_pipeline *pipe, struct media_pipeline_pad_iter *iter, struct media_pad *pad); /** * media_pipeline_for_each_pad - Iterate on all pads in a media pipeline * @pipe: The pipeline * @iter: The iterator (struct media_pipeline_pad_iter) * @pad: The iterator pad * * Iterate on all pads in a media pipeline. This is only valid after the * pipeline has been built with media_pipeline_start() and before it gets * destroyed with media_pipeline_stop(). */ #define media_pipeline_for_each_pad(pipe, iter, pad) \ for (pad = __media_pipeline_pad_iter_next((pipe), iter, NULL); \ pad != NULL; \ pad = __media_pipeline_pad_iter_next((pipe), iter, pad)) /** * media_pipeline_entity_iter_init - Initialize a pipeline entity iterator * @pipe: The pipeline * @iter: The iterator * * This function must be called to initialize the iterator before using it in a * media_pipeline_for_each_entity() loop. The iterator must be destroyed by a * call to media_pipeline_entity_iter_cleanup after the loop (including in code * paths that break from the loop). * * The same iterator can be used in multiple consecutive loops without being * destroyed and reinitialized. * * Return: 0 on success or a negative error code otherwise. */ int media_pipeline_entity_iter_init(struct media_pipeline *pipe, struct media_pipeline_entity_iter *iter); /** * media_pipeline_entity_iter_cleanup - Destroy a pipeline entity iterator * @iter: The iterator * * This function must be called to destroy iterators initialized with * media_pipeline_entity_iter_init(). */ void media_pipeline_entity_iter_cleanup(struct media_pipeline_entity_iter *iter); struct media_entity * __media_pipeline_entity_iter_next(struct media_pipeline *pipe, struct media_pipeline_entity_iter *iter, struct media_entity *entity); /** * media_pipeline_for_each_entity - Iterate on all entities in a media pipeline * @pipe: The pipeline * @iter: The iterator (struct media_pipeline_entity_iter) * @entity: The iterator entity * * Iterate on all entities in a media pipeline. This is only valid after the * pipeline has been built with media_pipeline_start() and before it gets * destroyed with media_pipeline_stop(). The iterator must be initialized with * media_pipeline_entity_iter_init() before iteration, and destroyed with * media_pipeline_entity_iter_cleanup() after (including in code paths that * break from the loop). */ #define media_pipeline_for_each_entity(pipe, iter, entity) \ for (entity = __media_pipeline_entity_iter_next((pipe), iter, NULL); \ entity != NULL; \ entity = __media_pipeline_entity_iter_next((pipe), iter, entity)) /** * media_pipeline_alloc_start - Mark a pipeline as streaming * @pad: Starting pad * * media_pipeline_alloc_start() is similar to media_pipeline_start() but instead * of working on a given pipeline the function will use an existing pipeline if * the pad is already part of a pipeline, or allocate a new pipeline. * * Calls to media_pipeline_alloc_start() must be matched with * media_pipeline_stop(). */ __must_check int media_pipeline_alloc_start(struct media_pad *pad); /** * media_devnode_create() - creates and initializes a device node interface * * @mdev: pointer to struct &media_device * @type: type of the interface, as given by * :ref:`include/uapi/linux/media.h <media_header>` * ( seek for ``MEDIA_INTF_T_*``) macros. * @flags: Interface flags, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * ( seek for ``MEDIA_INTF_FL_*``) * @major: Device node major number. * @minor: Device node minor number. * * Return: if succeeded, returns a pointer to the newly allocated * &media_intf_devnode pointer. * * .. note:: * * Currently, no flags for &media_interface is defined. */ struct media_intf_devnode * __must_check media_devnode_create(struct media_device *mdev, u32 type, u32 flags, u32 major, u32 minor); /** * media_devnode_remove() - removes a device node interface * * @devnode: pointer to &media_intf_devnode to be freed. * * When a device node interface is removed, all links to it are automatically * removed. */ void media_devnode_remove(struct media_intf_devnode *devnode); /** * media_create_intf_link() - creates a link between an entity and an interface * * @entity: pointer to %media_entity * @intf: pointer to %media_interface * @flags: Link flags, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * ( seek for ``MEDIA_LNK_FL_*``) * * * Valid values for flags: * * %MEDIA_LNK_FL_ENABLED * Indicates that the interface is connected to the entity hardware. * That's the default value for interfaces. An interface may be disabled if * the hardware is busy due to the usage of some other interface that it is * currently controlling the hardware. * * A typical example is an hybrid TV device that handle only one type of * stream on a given time. So, when the digital TV is streaming, * the V4L2 interfaces won't be enabled, as such device is not able to * also stream analog TV or radio. * * .. note:: * * Before calling this function, media_devnode_create() should be called for * the interface and media_device_register_entity() should be called for the * interface that will be part of the link. */ struct media_link * __must_check media_create_intf_link(struct media_entity *entity, struct media_interface *intf, u32 flags); /** * __media_remove_intf_link() - remove a single interface link * * @link: pointer to &media_link. * * .. note:: This is an unlocked version of media_remove_intf_link() */ void __media_remove_intf_link(struct media_link *link); /** * media_remove_intf_link() - remove a single interface link * * @link: pointer to &media_link. * * .. note:: Prefer to use this one, instead of __media_remove_intf_link() */ void media_remove_intf_link(struct media_link *link); /** * __media_remove_intf_links() - remove all links associated with an interface * * @intf: pointer to &media_interface * * .. note:: This is an unlocked version of media_remove_intf_links(). */ void __media_remove_intf_links(struct media_interface *intf); /** * media_remove_intf_links() - remove all links associated with an interface * * @intf: pointer to &media_interface * * .. note:: * * #) This is called automatically when an entity is unregistered via * media_device_register_entity() and by media_devnode_remove(). * * #) Prefer to use this one, instead of __media_remove_intf_links(). */ void media_remove_intf_links(struct media_interface *intf); /** * media_entity_call - Calls a struct media_entity_operations operation on * an entity * * @entity: entity where the @operation will be called * @operation: type of the operation. Should be the name of a member of * struct &media_entity_operations. * * This helper function will check if @operation is not %NULL. On such case, * it will issue a call to @operation\(@entity, @args\). */ #define media_entity_call(entity, operation, args...) \ (((entity)->ops && (entity)->ops->operation) ? \ (entity)->ops->operation((entity) , ##args) : -ENOIOCTLCMD) /** * media_create_ancillary_link() - create an ancillary link between two * instances of &media_entity * * @primary: pointer to the primary &media_entity * @ancillary: pointer to the ancillary &media_entity * * Create an ancillary link between two entities, indicating that they * represent two connected pieces of hardware that form a single logical unit. * A typical example is a camera lens controller being linked to the sensor that * it is supporting. * * The function sets both MEDIA_LNK_FL_ENABLED and MEDIA_LNK_FL_IMMUTABLE for * the new link. */ struct media_link * media_create_ancillary_link(struct media_entity *primary, struct media_entity *ancillary); /** * __media_entity_next_link() - Iterate through a &media_entity's links * * @entity: pointer to the &media_entity * @link: pointer to a &media_link to hold the iterated values * @link_type: one of the MEDIA_LNK_FL_LINK_TYPE flags * * Return the next link against an entity matching a specific link type. This * allows iteration through an entity's links whilst guaranteeing all of the * returned links are of the given type. */ struct media_link *__media_entity_next_link(struct media_entity *entity, struct media_link *link, unsigned long link_type); /** * for_each_media_entity_data_link() - Iterate through an entity's data links * * @entity: pointer to the &media_entity * @link: pointer to a &media_link to hold the iterated values * * Iterate over a &media_entity's data links */ #define for_each_media_entity_data_link(entity, link) \ for (link = __media_entity_next_link(entity, NULL, \ MEDIA_LNK_FL_DATA_LINK); \ link; \ link = __media_entity_next_link(entity, link, \ MEDIA_LNK_FL_DATA_LINK)) #endif |
| 2 3 3 2 3 150 150 135 143 143 3211 3217 3216 253 150 118 3210 3213 3208 3211 3218 110 110 3208 3211 8 8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 | // SPDX-License-Identifier: GPL-2.0 /* * USB device quirk handling logic and table * * Copyright (c) 2007 Oliver Neukum * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de> */ #include <linux/moduleparam.h> #include <linux/usb.h> #include <linux/usb/quirks.h> #include <linux/usb/hcd.h> #include "usb.h" struct quirk_entry { u16 vid; u16 pid; u32 flags; }; static DEFINE_MUTEX(quirk_mutex); static struct quirk_entry *quirk_list; static unsigned int quirk_count; static char quirks_param[128]; static int quirks_param_set(const char *value, const struct kernel_param *kp) { char *val, *p, *field; u16 vid, pid; u32 flags; size_t i; int err; val = kstrdup(value, GFP_KERNEL); if (!val) return -ENOMEM; err = param_set_copystring(val, kp); if (err) { kfree(val); return err; } mutex_lock(&quirk_mutex); if (!*val) { quirk_count = 0; kfree(quirk_list); quirk_list = NULL; goto unlock; } for (quirk_count = 1, i = 0; val[i]; i++) if (val[i] == ',') quirk_count++; if (quirk_list) { kfree(quirk_list); quirk_list = NULL; } quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry), GFP_KERNEL); if (!quirk_list) { quirk_count = 0; mutex_unlock(&quirk_mutex); kfree(val); return -ENOMEM; } for (i = 0, p = val; p && *p;) { /* Each entry consists of VID:PID:flags */ field = strsep(&p, ":"); if (!field) break; if (kstrtou16(field, 16, &vid)) break; field = strsep(&p, ":"); if (!field) break; if (kstrtou16(field, 16, &pid)) break; field = strsep(&p, ","); if (!field || !*field) break; /* Collect the flags */ for (flags = 0; *field; field++) { switch (*field) { case 'a': flags |= USB_QUIRK_STRING_FETCH_255; break; case 'b': flags |= USB_QUIRK_RESET_RESUME; break; case 'c': flags |= USB_QUIRK_NO_SET_INTF; break; case 'd': flags |= USB_QUIRK_CONFIG_INTF_STRINGS; break; case 'e': flags |= USB_QUIRK_RESET; break; case 'f': flags |= USB_QUIRK_HONOR_BNUMINTERFACES; break; case 'g': flags |= USB_QUIRK_DELAY_INIT; break; case 'h': flags |= USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL; break; case 'i': flags |= USB_QUIRK_DEVICE_QUALIFIER; break; case 'j': flags |= USB_QUIRK_IGNORE_REMOTE_WAKEUP; break; case 'k': flags |= USB_QUIRK_NO_LPM; break; case 'l': flags |= USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL; break; case 'm': flags |= USB_QUIRK_DISCONNECT_SUSPEND; break; case 'n': flags |= USB_QUIRK_DELAY_CTRL_MSG; break; case 'o': flags |= USB_QUIRK_HUB_SLOW_RESET; break; case 'p': flags |= USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT; break; /* Ignore unrecognized flag characters */ } } quirk_list[i++] = (struct quirk_entry) { .vid = vid, .pid = pid, .flags = flags }; } if (i < quirk_count) quirk_count = i; unlock: mutex_unlock(&quirk_mutex); kfree(val); return 0; } static const struct kernel_param_ops quirks_param_ops = { .set = quirks_param_set, .get = param_get_string, }; static struct kparam_string quirks_param_string = { .maxlen = sizeof(quirks_param), .string = quirks_param, }; device_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644); MODULE_PARM_DESC(quirks, "Add/modify USB quirks by specifying quirks=vendorID:productID:quirks"); /* Lists of quirky USB devices, split in device quirks and interface quirks. * Device quirks are applied at the very beginning of the enumeration process, * right after reading the device descriptor. They can thus only match on device * information. * * Interface quirks are applied after reading all the configuration descriptors. * They can match on both device and interface information. * * Note that the DELAY_INIT and HONOR_BNUMINTERFACES quirks do not make sense as * interface quirks, as they only influence the enumeration process which is run * before processing the interface quirks. * * Please keep the lists ordered by: * 1) Vendor ID * 2) Product ID * 3) Class ID */ static const struct usb_device_id usb_quirk_list[] = { /* CBM - Flash disk */ { USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME }, /* WORLDE Controller KS49 or Prodipe MIDI 49C USB controller */ { USB_DEVICE(0x0218, 0x0201), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* WORLDE easy key (easykey.25) MIDI controller */ { USB_DEVICE(0x0218, 0x0401), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* HP 5300/5370C scanner */ { USB_DEVICE(0x03f0, 0x0701), .driver_info = USB_QUIRK_STRING_FETCH_255 }, /* HP v222w 16GB Mini USB Drive */ { USB_DEVICE(0x03f0, 0x3f40), .driver_info = USB_QUIRK_DELAY_INIT }, /* Creative SB Audigy 2 NX */ { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME }, /* USB3503 */ { USB_DEVICE(0x0424, 0x3503), .driver_info = USB_QUIRK_RESET_RESUME }, /* Microsoft Wireless Laser Mouse 6000 Receiver */ { USB_DEVICE(0x045e, 0x00e1), .driver_info = USB_QUIRK_RESET_RESUME }, /* Microsoft LifeCam-VX700 v2.0 */ { USB_DEVICE(0x045e, 0x0770), .driver_info = USB_QUIRK_RESET_RESUME }, /* Microsoft Surface Dock Ethernet (RTL8153 GigE) */ { USB_DEVICE(0x045e, 0x07c6), .driver_info = USB_QUIRK_NO_LPM }, /* Cherry Stream G230 2.0 (G85-231) and 3.0 (G85-232) */ { USB_DEVICE(0x046a, 0x0023), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech HD Webcam C270 */ { USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME | USB_QUIRK_NO_LPM}, /* Logitech HD Pro Webcams C920, C920-C, C922, C925e and C930e */ { USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT }, { USB_DEVICE(0x046d, 0x0841), .driver_info = USB_QUIRK_DELAY_INIT }, { USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT }, { USB_DEVICE(0x046d, 0x085b), .driver_info = USB_QUIRK_DELAY_INIT }, { USB_DEVICE(0x046d, 0x085c), .driver_info = USB_QUIRK_DELAY_INIT }, /* Logitech ConferenceCam CC3000e */ { USB_DEVICE(0x046d, 0x0847), .driver_info = USB_QUIRK_DELAY_INIT }, { USB_DEVICE(0x046d, 0x0848), .driver_info = USB_QUIRK_DELAY_INIT }, /* Logitech PTZ Pro Camera */ { USB_DEVICE(0x046d, 0x0853), .driver_info = USB_QUIRK_DELAY_INIT }, /* Logitech Screen Share */ { USB_DEVICE(0x046d, 0x086c), .driver_info = USB_QUIRK_NO_LPM }, /* Logitech Quickcam Fusion */ { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Quickcam Orbit MP */ { USB_DEVICE(0x046d, 0x08c2), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Quickcam Pro for Notebook */ { USB_DEVICE(0x046d, 0x08c3), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Quickcam Pro 5000 */ { USB_DEVICE(0x046d, 0x08c5), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Quickcam OEM Dell Notebook */ { USB_DEVICE(0x046d, 0x08c6), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Quickcam OEM Cisco VT Camera II */ { USB_DEVICE(0x046d, 0x08c7), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Harmony 700-series */ { USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT }, /* Philips PSC805 audio device */ { USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME }, /* Plantronic Audio 655 DSP */ { USB_DEVICE(0x047f, 0xc008), .driver_info = USB_QUIRK_RESET_RESUME }, /* Plantronic Audio 648 USB */ { USB_DEVICE(0x047f, 0xc013), .driver_info = USB_QUIRK_RESET_RESUME }, /* Artisman Watchdog Dongle */ { USB_DEVICE(0x04b4, 0x0526), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* Microchip Joss Optical infrared touchboard device */ { USB_DEVICE(0x04d8, 0x000c), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* CarrolTouch 4000U */ { USB_DEVICE(0x04e7, 0x0009), .driver_info = USB_QUIRK_RESET_RESUME }, /* CarrolTouch 4500U */ { USB_DEVICE(0x04e7, 0x0030), .driver_info = USB_QUIRK_RESET_RESUME }, /* Samsung Android phone modem - ID conflict with SPH-I500 */ { USB_DEVICE(0x04e8, 0x6601), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* Elan Touchscreen */ { USB_DEVICE(0x04f3, 0x0089), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, { USB_DEVICE(0x04f3, 0x009b), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, { USB_DEVICE(0x04f3, 0x010c), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, { USB_DEVICE(0x04f3, 0x0125), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, { USB_DEVICE(0x04f3, 0x016f), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, { USB_DEVICE(0x04f3, 0x0381), .driver_info = USB_QUIRK_NO_LPM }, { USB_DEVICE(0x04f3, 0x21b8), .driver_info = USB_QUIRK_DEVICE_QUALIFIER }, /* Roland SC-8820 */ { USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME }, /* Edirol SD-20 */ { USB_DEVICE(0x0582, 0x0027), .driver_info = USB_QUIRK_RESET_RESUME }, /* Alcor Micro Corp. Hub */ { USB_DEVICE(0x058f, 0x9254), .driver_info = USB_QUIRK_RESET_RESUME }, /* appletouch */ { USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME }, /* Genesys Logic hub, internally used by KY-688 USB 3.1 Type-C Hub */ { USB_DEVICE(0x05e3, 0x0612), .driver_info = USB_QUIRK_NO_LPM }, /* ELSA MicroLink 56K */ { USB_DEVICE(0x05cc, 0x2267), .driver_info = USB_QUIRK_RESET_RESUME }, /* Genesys Logic hub, internally used by Moshi USB to Ethernet Adapter */ { USB_DEVICE(0x05e3, 0x0616), .driver_info = USB_QUIRK_NO_LPM }, /* Avision AV600U */ { USB_DEVICE(0x0638, 0x0a13), .driver_info = USB_QUIRK_STRING_FETCH_255 }, /* Prolific Single-LUN Mass Storage Card Reader */ { USB_DEVICE(0x067b, 0x2731), .driver_info = USB_QUIRK_DELAY_INIT | USB_QUIRK_NO_LPM }, /* Saitek Cyborg Gold Joystick */ { USB_DEVICE(0x06a3, 0x0006), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* Agfa SNAPSCAN 1212U */ { USB_DEVICE(0x06bd, 0x0001), .driver_info = USB_QUIRK_RESET_RESUME }, /* Guillemot Webcam Hercules Dualpix Exchange (2nd ID) */ { USB_DEVICE(0x06f8, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME }, /* Guillemot Webcam Hercules Dualpix Exchange*/ { USB_DEVICE(0x06f8, 0x3005), .driver_info = USB_QUIRK_RESET_RESUME }, /* Guillemot Hercules DJ Console audio card (BZ 208357) */ { USB_DEVICE(0x06f8, 0xb000), .driver_info = USB_QUIRK_ENDPOINT_IGNORE }, /* Midiman M-Audio Keystation 88es */ { USB_DEVICE(0x0763, 0x0192), .driver_info = USB_QUIRK_RESET_RESUME }, /* SanDisk Ultra Fit and Ultra Flair */ { USB_DEVICE(0x0781, 0x5583), .driver_info = USB_QUIRK_NO_LPM }, { USB_DEVICE(0x0781, 0x5591), .driver_info = USB_QUIRK_NO_LPM }, /* SanDisk Corp. SanDisk 3.2Gen1 */ { USB_DEVICE(0x0781, 0x5596), .driver_info = USB_QUIRK_DELAY_INIT }, { USB_DEVICE(0x0781, 0x55a3), .driver_info = USB_QUIRK_DELAY_INIT }, /* SanDisk Extreme 55AE */ { USB_DEVICE(0x0781, 0x55ae), .driver_info = USB_QUIRK_NO_LPM }, /* Realforce 87U Keyboard */ { USB_DEVICE(0x0853, 0x011b), .driver_info = USB_QUIRK_NO_LPM }, /* M-Systems Flash Disk Pioneers */ { USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME }, /* Baum Vario Ultra */ { USB_DEVICE(0x0904, 0x6101), .driver_info = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL }, { USB_DEVICE(0x0904, 0x6102), .driver_info = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL }, { USB_DEVICE(0x0904, 0x6103), .driver_info = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL }, /* Silicon Motion Flash Drive */ { USB_DEVICE(0x090c, 0x1000), .driver_info = USB_QUIRK_DELAY_INIT }, /* Sound Devices USBPre2 */ { USB_DEVICE(0x0926, 0x0202), .driver_info = USB_QUIRK_ENDPOINT_IGNORE }, /* Sound Devices MixPre-D */ { USB_DEVICE(0x0926, 0x0208), .driver_info = USB_QUIRK_ENDPOINT_IGNORE }, /* Keytouch QWERTY Panel keyboard */ { USB_DEVICE(0x0926, 0x3333), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* Kingston DataTraveler 3.0 */ { USB_DEVICE(0x0951, 0x1666), .driver_info = USB_QUIRK_NO_LPM }, /* TOSHIBA TransMemory-Mx */ { USB_DEVICE(0x0930, 0x1408), .driver_info = USB_QUIRK_NO_LPM }, /* NVIDIA Jetson devices in Force Recovery mode */ { USB_DEVICE(0x0955, 0x7018), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x0955, 0x7019), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x0955, 0x7418), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x0955, 0x7721), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x0955, 0x7c18), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x0955, 0x7e19), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x0955, 0x7f21), .driver_info = USB_QUIRK_RESET_RESUME }, /* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */ { USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF }, /* ELMO L-12F document camera */ { USB_DEVICE(0x09a1, 0x0028), .driver_info = USB_QUIRK_DELAY_CTRL_MSG }, /* Broadcom BCM92035DGROM BT dongle */ { USB_DEVICE(0x0a5c, 0x2021), .driver_info = USB_QUIRK_RESET_RESUME }, /* MAYA44USB sound device */ { USB_DEVICE(0x0a92, 0x0091), .driver_info = USB_QUIRK_RESET_RESUME }, /* ASUS Base Station(T100) */ { USB_DEVICE(0x0b05, 0x17e0), .driver_info = USB_QUIRK_IGNORE_REMOTE_WAKEUP }, /* Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)*/ { USB_DEVICE(0x0bda, 0x0151), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* Realtek hub in Dell WD19 (Type-C) */ { USB_DEVICE(0x0bda, 0x0487), .driver_info = USB_QUIRK_NO_LPM }, /* Generic RTL8153 based ethernet adapters */ { USB_DEVICE(0x0bda, 0x8153), .driver_info = USB_QUIRK_NO_LPM }, /* SONiX USB DEVICE Touchpad */ { USB_DEVICE(0x0c45, 0x7056), .driver_info = USB_QUIRK_IGNORE_REMOTE_WAKEUP }, /* Sony Xperia XZ1 Compact (lilac) smartphone in fastboot mode */ { USB_DEVICE(0x0fce, 0x0dde), .driver_info = USB_QUIRK_NO_LPM }, /* Action Semiconductor flash disk */ { USB_DEVICE(0x10d6, 0x2200), .driver_info = USB_QUIRK_STRING_FETCH_255 }, /* novation SoundControl XL */ { USB_DEVICE(0x1235, 0x0061), .driver_info = USB_QUIRK_RESET_RESUME }, /* Focusrite Scarlett Solo USB */ { USB_DEVICE(0x1235, 0x8211), .driver_info = USB_QUIRK_DISCONNECT_SUSPEND }, /* Huawei 4G LTE module */ { USB_DEVICE(0x12d1, 0x15bb), .driver_info = USB_QUIRK_DISCONNECT_SUSPEND }, { USB_DEVICE(0x12d1, 0x15c3), .driver_info = USB_QUIRK_DISCONNECT_SUSPEND }, /* SKYMEDI USB_DRIVE */ { USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME }, /* Razer - Razer Blade Keyboard */ { USB_DEVICE(0x1532, 0x0116), .driver_info = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL }, /* Lenovo ThinkPad OneLink+ Dock twin hub controllers (VIA Labs VL812) */ { USB_DEVICE(0x17ef, 0x1018), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x17ef, 0x1019), .driver_info = USB_QUIRK_RESET_RESUME }, /* Lenovo USB-C to Ethernet Adapter RTL8153-04 */ { USB_DEVICE(0x17ef, 0x720c), .driver_info = USB_QUIRK_NO_LPM }, /* Lenovo Powered USB-C Travel Hub (4X90S92381, RTL8153 GigE) */ { USB_DEVICE(0x17ef, 0x721e), .driver_info = USB_QUIRK_NO_LPM }, /* Lenovo ThinkCenter A630Z TI024Gen3 usb-audio */ { USB_DEVICE(0x17ef, 0xa012), .driver_info = USB_QUIRK_DISCONNECT_SUSPEND }, /* Lenovo ThinkPad USB-C Dock Gen2 Ethernet (RTL8153 GigE) */ { USB_DEVICE(0x17ef, 0xa387), .driver_info = USB_QUIRK_NO_LPM }, /* BUILDWIN Photo Frame */ { USB_DEVICE(0x1908, 0x1315), .driver_info = USB_QUIRK_HONOR_BNUMINTERFACES }, /* Protocol and OTG Electrical Test Device */ { USB_DEVICE(0x1a0a, 0x0200), .driver_info = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL }, /* Terminus Technology Inc. Hub */ { USB_DEVICE(0x1a40, 0x0101), .driver_info = USB_QUIRK_HUB_SLOW_RESET }, /* Corsair K70 RGB */ { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT | USB_QUIRK_DELAY_CTRL_MSG }, /* Corsair Strafe */ { USB_DEVICE(0x1b1c, 0x1b15), .driver_info = USB_QUIRK_DELAY_INIT | USB_QUIRK_DELAY_CTRL_MSG }, /* Corsair Strafe RGB */ { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT | USB_QUIRK_DELAY_CTRL_MSG }, /* Corsair K70 LUX RGB */ { USB_DEVICE(0x1b1c, 0x1b33), .driver_info = USB_QUIRK_DELAY_INIT }, /* Corsair K70 LUX */ { USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT }, /* Corsair K70 RGB RAPDIFIRE */ { USB_DEVICE(0x1b1c, 0x1b38), .driver_info = USB_QUIRK_DELAY_INIT | USB_QUIRK_DELAY_CTRL_MSG }, /* START BP-850k Printer */ { USB_DEVICE(0x1bc3, 0x0003), .driver_info = USB_QUIRK_NO_SET_INTF }, /* MIDI keyboard WORLDE MINI */ { USB_DEVICE(0x1c75, 0x0204), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* Acer C120 LED Projector */ { USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM }, /* Blackmagic Design Intensity Shuttle */ { USB_DEVICE(0x1edb, 0xbd3b), .driver_info = USB_QUIRK_NO_LPM }, /* Blackmagic Design UltraStudio SDI */ { USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM }, /* Teclast disk */ { USB_DEVICE(0x1f75, 0x0917), .driver_info = USB_QUIRK_NO_LPM }, /* Hauppauge HVR-950q */ { USB_DEVICE(0x2040, 0x7200), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* VLI disk */ { USB_DEVICE(0x2109, 0x0711), .driver_info = USB_QUIRK_NO_LPM }, /* Raydium Touchscreen */ { USB_DEVICE(0x2386, 0x3114), .driver_info = USB_QUIRK_NO_LPM }, { USB_DEVICE(0x2386, 0x3119), .driver_info = USB_QUIRK_NO_LPM }, { USB_DEVICE(0x2386, 0x350e), .driver_info = USB_QUIRK_NO_LPM }, /* APTIV AUTOMOTIVE HUB */ { USB_DEVICE(0x2c48, 0x0132), .driver_info = USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT }, /* DJI CineSSD */ { USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM }, /* Alcor Link AK9563 SC Reader used in 2022 Lenovo ThinkPads */ { USB_DEVICE(0x2ce3, 0x9563), .driver_info = USB_QUIRK_NO_LPM }, /* DELL USB GEN2 */ { USB_DEVICE(0x413c, 0xb062), .driver_info = USB_QUIRK_NO_LPM | USB_QUIRK_RESET_RESUME }, /* VCOM device */ { USB_DEVICE(0x4296, 0x7570), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, /* INTEL VALUE SSD */ { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME }, { } /* terminating entry must be last */ }; static const struct usb_device_id usb_interface_quirk_list[] = { /* Logitech UVC Cameras */ { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0), .driver_info = USB_QUIRK_RESET_RESUME }, { } /* terminating entry must be last */ }; static const struct usb_device_id usb_amd_resume_quirk_list[] = { /* Lenovo Mouse with Pixart controller */ { USB_DEVICE(0x17ef, 0x602e), .driver_info = USB_QUIRK_RESET_RESUME }, /* Pixart Mouse */ { USB_DEVICE(0x093a, 0x2500), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x093a, 0x2510), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x093a, 0x2521), .driver_info = USB_QUIRK_RESET_RESUME }, { USB_DEVICE(0x03f0, 0x2b4a), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Optical Mouse M90/M100 */ { USB_DEVICE(0x046d, 0xc05a), .driver_info = USB_QUIRK_RESET_RESUME }, { } /* terminating entry must be last */ }; /* * Entries for endpoints that should be ignored when parsing configuration * descriptors. * * Matched for devices with USB_QUIRK_ENDPOINT_IGNORE. */ static const struct usb_device_id usb_endpoint_ignore[] = { { USB_DEVICE_INTERFACE_NUMBER(0x06f8, 0xb000, 5), .driver_info = 0x01 }, { USB_DEVICE_INTERFACE_NUMBER(0x06f8, 0xb000, 5), .driver_info = 0x81 }, { USB_DEVICE_INTERFACE_NUMBER(0x0926, 0x0202, 1), .driver_info = 0x85 }, { USB_DEVICE_INTERFACE_NUMBER(0x0926, 0x0208, 1), .driver_info = 0x85 }, { } }; bool usb_endpoint_is_ignored(struct usb_device *udev, struct usb_host_interface *intf, struct usb_endpoint_descriptor *epd) { const struct usb_device_id *id; unsigned int address; for (id = usb_endpoint_ignore; id->match_flags; ++id) { if (!usb_match_device(udev, id)) continue; if (!usb_match_one_id_intf(udev, intf, id)) continue; address = id->driver_info; if (address == epd->bEndpointAddress) return true; } return false; } static bool usb_match_any_interface(struct usb_device *udev, const struct usb_device_id *id) { unsigned int i; for (i = 0; i < udev->descriptor.bNumConfigurations; ++i) { struct usb_host_config *cfg = &udev->config[i]; unsigned int j; for (j = 0; j < cfg->desc.bNumInterfaces; ++j) { struct usb_interface_cache *cache; struct usb_host_interface *intf; cache = cfg->intf_cache[j]; if (cache->num_altsetting == 0) continue; intf = &cache->altsetting[0]; if (usb_match_one_id_intf(udev, intf, id)) return true; } } return false; } static int usb_amd_resume_quirk(struct usb_device *udev) { struct usb_hcd *hcd; hcd = bus_to_hcd(udev->bus); /* The device should be attached directly to root hub */ if (udev->level == 1 && hcd->amd_resume_bug == 1) return 1; return 0; } static u32 usb_detect_static_quirks(struct usb_device *udev, const struct usb_device_id *id) { u32 quirks = 0; for (; id->match_flags; id++) { if (!usb_match_device(udev, id)) continue; if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_INFO) && !usb_match_any_interface(udev, id)) continue; quirks |= (u32)(id->driver_info); } return quirks; } static u32 usb_detect_dynamic_quirks(struct usb_device *udev) { u16 vid = le16_to_cpu(udev->descriptor.idVendor); u16 pid = le16_to_cpu(udev->descriptor.idProduct); int i, flags = 0; mutex_lock(&quirk_mutex); for (i = 0; i < quirk_count; i++) { if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) { flags = quirk_list[i].flags; break; } } mutex_unlock(&quirk_mutex); return flags; } /* * Detect any quirks the device has, and do any housekeeping for it if needed. */ void usb_detect_quirks(struct usb_device *udev) { udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list); /* * Pixart-based mice would trigger remote wakeup issue on AMD * Yangtze chipset, so set them as RESET_RESUME flag. */ if (usb_amd_resume_quirk(udev)) udev->quirks |= usb_detect_static_quirks(udev, usb_amd_resume_quirk_list); udev->quirks ^= usb_detect_dynamic_quirks(udev); if (udev->quirks) dev_dbg(&udev->dev, "USB quirks for this device: 0x%x\n", udev->quirks); #ifdef CONFIG_USB_DEFAULT_PERSIST if (!(udev->quirks & USB_QUIRK_RESET)) udev->persist_enabled = 1; #else /* Hubs are automatically enabled for USB-PERSIST */ if (udev->descriptor.bDeviceClass == USB_CLASS_HUB) udev->persist_enabled = 1; #endif /* CONFIG_USB_DEFAULT_PERSIST */ } void usb_detect_interface_quirks(struct usb_device *udev) { u32 quirks; quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list); if (quirks == 0) return; dev_dbg(&udev->dev, "USB interface quirks for this device: %x\n", quirks); udev->quirks |= quirks; } void usb_release_quirk_list(void) { mutex_lock(&quirk_mutex); kfree(quirk_list); quirk_list = NULL; mutex_unlock(&quirk_mutex); } |
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1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 | // SPDX-License-Identifier: GPL-2.0-or-later /* linux/net/ipv4/arp.c * * Copyright (C) 1994 by Florian La Roche * * This module implements the Address Resolution Protocol ARP (RFC 826), * which is used to convert IP addresses (or in the future maybe other * high-level addresses) into a low-level hardware address (like an Ethernet * address). * * Fixes: * Alan Cox : Removed the Ethernet assumptions in * Florian's code * Alan Cox : Fixed some small errors in the ARP * logic * Alan Cox : Allow >4K in /proc * Alan Cox : Make ARP add its own protocol entry * Ross Martin : Rewrote arp_rcv() and arp_get_info() * Stephen Henson : Add AX25 support to arp_get_info() * Alan Cox : Drop data when a device is downed. * Alan Cox : Use init_timer(). * Alan Cox : Double lock fixes. * Martin Seine : Move the arphdr structure * to if_arp.h for compatibility. * with BSD based programs. * Andrew Tridgell : Added ARP netmask code and * re-arranged proxy handling. * Alan Cox : Changed to use notifiers. * Niibe Yutaka : Reply for this device or proxies only. * Alan Cox : Don't proxy across hardware types! * Jonathan Naylor : Added support for NET/ROM. * Mike Shaver : RFC1122 checks. * Jonathan Naylor : Only lookup the hardware address for * the correct hardware type. * Germano Caronni : Assorted subtle races. * Craig Schlenter : Don't modify permanent entry * during arp_rcv. * Russ Nelson : Tidied up a few bits. * Alexey Kuznetsov: Major changes to caching and behaviour, * eg intelligent arp probing and * generation * of host down events. * Alan Cox : Missing unlock in device events. * Eckes : ARP ioctl control errors. * Alexey Kuznetsov: Arp free fix. * Manuel Rodriguez: Gratuitous ARP. * Jonathan Layes : Added arpd support through kerneld * message queue (960314) * Mike Shaver : /proc/sys/net/ipv4/arp_* support * Mike McLagan : Routing by source * Stuart Cheshire : Metricom and grat arp fixes * *** FOR 2.1 clean this up *** * Lawrence V. Stefani: (08/12/96) Added FDDI support. * Alan Cox : Took the AP1000 nasty FDDI hack and * folded into the mainstream FDDI code. * Ack spit, Linus how did you allow that * one in... * Jes Sorensen : Make FDDI work again in 2.1.x and * clean up the APFDDI & gen. FDDI bits. * Alexey Kuznetsov: new arp state machine; * now it is in net/core/neighbour.c. * Krzysztof Halasa: Added Frame Relay ARP support. * Arnaldo C. Melo : convert /proc/net/arp to seq_file * Shmulik Hen: Split arp_send to arp_create and * arp_xmit so intermediate drivers like * bonding can change the skb before * sending (e.g. insert 8021q tag). * Harald Welte : convert to make use of jenkins hash * Jesper D. Brouer: Proxy ARP PVLAN RFC 3069 support. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/types.h> #include <linux/string.h> #include <linux/kernel.h> #include <linux/capability.h> #include <linux/socket.h> #include <linux/sockios.h> #include <linux/errno.h> #include <linux/in.h> #include <linux/mm.h> #include <linux/inet.h> #include <linux/inetdevice.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/fddidevice.h> #include <linux/if_arp.h> #include <linux/skbuff.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/stat.h> #include <linux/init.h> #include <linux/net.h> #include <linux/rcupdate.h> #include <linux/slab.h> #ifdef CONFIG_SYSCTL #include <linux/sysctl.h> #endif #include <net/net_namespace.h> #include <net/ip.h> #include <net/icmp.h> #include <net/route.h> #include <net/protocol.h> #include <net/tcp.h> #include <net/sock.h> #include <net/arp.h> #include <net/ax25.h> #include <net/netrom.h> #include <net/dst_metadata.h> #include <net/ip_tunnels.h> #include <linux/uaccess.h> #include <linux/netfilter_arp.h> /* * Interface to generic neighbour cache. */ static u32 arp_hash(const void *pkey, const struct net_device *dev, __u32 *hash_rnd); static bool arp_key_eq(const struct neighbour *n, const void *pkey); static int arp_constructor(struct neighbour *neigh); static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb); static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb); static void parp_redo(struct sk_buff *skb); static int arp_is_multicast(const void *pkey); static const struct neigh_ops arp_generic_ops = { .family = AF_INET, .solicit = arp_solicit, .error_report = arp_error_report, .output = neigh_resolve_output, .connected_output = neigh_connected_output, }; static const struct neigh_ops arp_hh_ops = { .family = AF_INET, .solicit = arp_solicit, .error_report = arp_error_report, .output = neigh_resolve_output, .connected_output = neigh_resolve_output, }; static const struct neigh_ops arp_direct_ops = { .family = AF_INET, .output = neigh_direct_output, .connected_output = neigh_direct_output, }; struct neigh_table arp_tbl = { .family = AF_INET, .key_len = 4, .protocol = cpu_to_be16(ETH_P_IP), .hash = arp_hash, .key_eq = arp_key_eq, .constructor = arp_constructor, .proxy_redo = parp_redo, .is_multicast = arp_is_multicast, .id = "arp_cache", .parms = { .tbl = &arp_tbl, .reachable_time = 30 * HZ, .data = { [NEIGH_VAR_MCAST_PROBES] = 3, [NEIGH_VAR_UCAST_PROBES] = 3, [NEIGH_VAR_RETRANS_TIME] = 1 * HZ, [NEIGH_VAR_BASE_REACHABLE_TIME] = 30 * HZ, [NEIGH_VAR_DELAY_PROBE_TIME] = 5 * HZ, [NEIGH_VAR_INTERVAL_PROBE_TIME_MS] = 5 * HZ, [NEIGH_VAR_GC_STALETIME] = 60 * HZ, [NEIGH_VAR_QUEUE_LEN_BYTES] = SK_WMEM_DEFAULT, [NEIGH_VAR_PROXY_QLEN] = 64, [NEIGH_VAR_ANYCAST_DELAY] = 1 * HZ, [NEIGH_VAR_PROXY_DELAY] = (8 * HZ) / 10, [NEIGH_VAR_LOCKTIME] = 1 * HZ, }, }, .gc_interval = 30 * HZ, .gc_thresh1 = 128, .gc_thresh2 = 512, .gc_thresh3 = 1024, }; EXPORT_SYMBOL(arp_tbl); int arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir) { switch (dev->type) { case ARPHRD_ETHER: case ARPHRD_FDDI: case ARPHRD_IEEE802: ip_eth_mc_map(addr, haddr); return 0; case ARPHRD_INFINIBAND: ip_ib_mc_map(addr, dev->broadcast, haddr); return 0; case ARPHRD_IPGRE: ip_ipgre_mc_map(addr, dev->broadcast, haddr); return 0; default: if (dir) { memcpy(haddr, dev->broadcast, dev->addr_len); return 0; } } return -EINVAL; } static u32 arp_hash(const void *pkey, const struct net_device *dev, __u32 *hash_rnd) { return arp_hashfn(pkey, dev, hash_rnd); } static bool arp_key_eq(const struct neighbour *neigh, const void *pkey) { return neigh_key_eq32(neigh, pkey); } static int arp_constructor(struct neighbour *neigh) { __be32 addr; struct net_device *dev = neigh->dev; struct in_device *in_dev; struct neigh_parms *parms; u32 inaddr_any = INADDR_ANY; if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT)) memcpy(neigh->primary_key, &inaddr_any, arp_tbl.key_len); addr = *(__be32 *)neigh->primary_key; rcu_read_lock(); in_dev = __in_dev_get_rcu(dev); if (!in_dev) { rcu_read_unlock(); return -EINVAL; } neigh->type = inet_addr_type_dev_table(dev_net(dev), dev, addr); parms = in_dev->arp_parms; __neigh_parms_put(neigh->parms); neigh->parms = neigh_parms_clone(parms); rcu_read_unlock(); if (!dev->header_ops) { neigh->nud_state = NUD_NOARP; neigh->ops = &arp_direct_ops; neigh->output = neigh_direct_output; } else { /* Good devices (checked by reading texts, but only Ethernet is tested) ARPHRD_ETHER: (ethernet, apfddi) ARPHRD_FDDI: (fddi) ARPHRD_IEEE802: (tr) ARPHRD_METRICOM: (strip) ARPHRD_ARCNET: etc. etc. etc. ARPHRD_IPDDP will also work, if author repairs it. I did not it, because this driver does not work even in old paradigm. */ if (neigh->type == RTN_MULTICAST) { neigh->nud_state = NUD_NOARP; arp_mc_map(addr, neigh->ha, dev, 1); } else if (dev->flags & (IFF_NOARP | IFF_LOOPBACK)) { neigh->nud_state = NUD_NOARP; memcpy(neigh->ha, dev->dev_addr, dev->addr_len); } else if (neigh->type == RTN_BROADCAST || (dev->flags & IFF_POINTOPOINT)) { neigh->nud_state = NUD_NOARP; memcpy(neigh->ha, dev->broadcast, dev->addr_len); } if (dev->header_ops->cache) neigh->ops = &arp_hh_ops; else neigh->ops = &arp_generic_ops; if (neigh->nud_state & NUD_VALID) neigh->output = neigh->ops->connected_output; else neigh->output = neigh->ops->output; } return 0; } static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb) { dst_link_failure(skb); kfree_skb_reason(skb, SKB_DROP_REASON_NEIGH_FAILED); } /* Create and send an arp packet. */ static void arp_send_dst(int type, int ptype, __be32 dest_ip, struct net_device *dev, __be32 src_ip, const unsigned char *dest_hw, const unsigned char *src_hw, const unsigned char *target_hw, struct dst_entry *dst) { struct sk_buff *skb; /* arp on this interface. */ if (dev->flags & IFF_NOARP) return; skb = arp_create(type, ptype, dest_ip, dev, src_ip, dest_hw, src_hw, target_hw); if (!skb) return; skb_dst_set(skb, dst_clone(dst)); arp_xmit(skb); } void arp_send(int type, int ptype, __be32 dest_ip, struct net_device *dev, __be32 src_ip, const unsigned char *dest_hw, const unsigned char *src_hw, const unsigned char *target_hw) { arp_send_dst(type, ptype, dest_ip, dev, src_ip, dest_hw, src_hw, target_hw, NULL); } EXPORT_SYMBOL(arp_send); static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb) { __be32 saddr = 0; u8 dst_ha[MAX_ADDR_LEN], *dst_hw = NULL; struct net_device *dev = neigh->dev; __be32 target = *(__be32 *)neigh->primary_key; int probes = atomic_read(&neigh->probes); struct in_device *in_dev; struct dst_entry *dst = NULL; rcu_read_lock(); in_dev = __in_dev_get_rcu(dev); if (!in_dev) { rcu_read_unlock(); return; } switch (IN_DEV_ARP_ANNOUNCE(in_dev)) { default: case 0: /* By default announce any local IP */ if (skb && inet_addr_type_dev_table(dev_net(dev), dev, ip_hdr(skb)->saddr) == RTN_LOCAL) saddr = ip_hdr(skb)->saddr; break; case 1: /* Restrict announcements of saddr in same subnet */ if (!skb) break; saddr = ip_hdr(skb)->saddr; if (inet_addr_type_dev_table(dev_net(dev), dev, saddr) == RTN_LOCAL) { /* saddr should be known to target */ if (inet_addr_onlink(in_dev, target, saddr)) break; } saddr = 0; break; case 2: /* Avoid secondary IPs, get a primary/preferred one */ break; } rcu_read_unlock(); if (!saddr) saddr = inet_select_addr(dev, target, RT_SCOPE_LINK); probes -= NEIGH_VAR(neigh->parms, UCAST_PROBES); if (probes < 0) { if (!(READ_ONCE(neigh->nud_state) & NUD_VALID)) pr_debug("trying to ucast probe in NUD_INVALID\n"); neigh_ha_snapshot(dst_ha, neigh, dev); dst_hw = dst_ha; } else { probes -= NEIGH_VAR(neigh->parms, APP_PROBES); if (probes < 0) { neigh_app_ns(neigh); return; } } if (skb && !(dev->priv_flags & IFF_XMIT_DST_RELEASE)) dst = skb_dst(skb); arp_send_dst(ARPOP_REQUEST, ETH_P_ARP, target, dev, saddr, dst_hw, dev->dev_addr, NULL, dst); } static int arp_ignore(struct in_device *in_dev, __be32 sip, __be32 tip) { struct net *net = dev_net(in_dev->dev); int scope; switch (IN_DEV_ARP_IGNORE(in_dev)) { case 0: /* Reply, the tip is already validated */ return 0; case 1: /* Reply only if tip is configured on the incoming interface */ sip = 0; scope = RT_SCOPE_HOST; break; case 2: /* * Reply only if tip is configured on the incoming interface * and is in same subnet as sip */ scope = RT_SCOPE_HOST; break; case 3: /* Do not reply for scope host addresses */ sip = 0; scope = RT_SCOPE_LINK; in_dev = NULL; break; case 4: /* Reserved */ case 5: case 6: case 7: return 0; case 8: /* Do not reply */ return 1; default: return 0; } return !inet_confirm_addr(net, in_dev, sip, tip, scope); } static int arp_accept(struct in_device *in_dev, __be32 sip) { struct net *net = dev_net(in_dev->dev); int scope = RT_SCOPE_LINK; switch (IN_DEV_ARP_ACCEPT(in_dev)) { case 0: /* Don't create new entries from garp */ return 0; case 1: /* Create new entries from garp */ return 1; case 2: /* Create a neighbor in the arp table only if sip * is in the same subnet as an address configured * on the interface that received the garp message */ return !!inet_confirm_addr(net, in_dev, sip, 0, scope); default: return 0; } } static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev) { struct rtable *rt; int flag = 0; /*unsigned long now; */ struct net *net = dev_net(dev); rt = ip_route_output(net, sip, tip, 0, l3mdev_master_ifindex_rcu(dev), RT_SCOPE_UNIVERSE); if (IS_ERR(rt)) return 1; if (rt->dst.dev != dev) { __NET_INC_STATS(net, LINUX_MIB_ARPFILTER); flag = 1; } ip_rt_put(rt); return flag; } /* * Check if we can use proxy ARP for this path */ static inline int arp_fwd_proxy(struct in_device *in_dev, struct net_device *dev, struct rtable *rt) { struct in_device *out_dev; int imi, omi = -1; if (rt->dst.dev == dev) return 0; if (!IN_DEV_PROXY_ARP(in_dev)) return 0; imi = IN_DEV_MEDIUM_ID(in_dev); if (imi == 0) return 1; if (imi == -1) return 0; /* place to check for proxy_arp for routes */ out_dev = __in_dev_get_rcu(rt->dst.dev); if (out_dev) omi = IN_DEV_MEDIUM_ID(out_dev); return omi != imi && omi != -1; } /* * Check for RFC3069 proxy arp private VLAN (allow to send back to same dev) * * RFC3069 supports proxy arp replies back to the same interface. This * is done to support (ethernet) switch features, like RFC 3069, where * the individual ports are not allowed to communicate with each * other, BUT they are allowed to talk to the upstream router. As * described in RFC 3069, it is possible to allow these hosts to * communicate through the upstream router, by proxy_arp'ing. * * RFC 3069: "VLAN Aggregation for Efficient IP Address Allocation" * * This technology is known by different names: * In RFC 3069 it is called VLAN Aggregation. * Cisco and Allied Telesyn call it Private VLAN. * Hewlett-Packard call it Source-Port filtering or port-isolation. * Ericsson call it MAC-Forced Forwarding (RFC Draft). * */ static inline int arp_fwd_pvlan(struct in_device *in_dev, struct net_device *dev, struct rtable *rt, __be32 sip, __be32 tip) { /* Private VLAN is only concerned about the same ethernet segment */ if (rt->dst.dev != dev) return 0; /* Don't reply on self probes (often done by windowz boxes)*/ if (sip == tip) return 0; if (IN_DEV_PROXY_ARP_PVLAN(in_dev)) return 1; else return 0; } /* * Interface to link layer: send routine and receive handler. */ /* * Create an arp packet. If dest_hw is not set, we create a broadcast * message. */ struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip, struct net_device *dev, __be32 src_ip, const unsigned char *dest_hw, const unsigned char *src_hw, const unsigned char *target_hw) { struct sk_buff *skb; struct arphdr *arp; unsigned char *arp_ptr; int hlen = LL_RESERVED_SPACE(dev); int tlen = dev->needed_tailroom; /* * Allocate a buffer */ skb = alloc_skb(arp_hdr_len(dev) + hlen + tlen, GFP_ATOMIC); if (!skb) return NULL; skb_reserve(skb, hlen); skb_reset_network_header(skb); arp = skb_put(skb, arp_hdr_len(dev)); skb->dev = dev; skb->protocol = htons(ETH_P_ARP); if (!src_hw) src_hw = dev->dev_addr; if (!dest_hw) dest_hw = dev->broadcast; /* * Fill the device header for the ARP frame */ if (dev_hard_header(skb, dev, ptype, dest_hw, src_hw, skb->len) < 0) goto out; /* * Fill out the arp protocol part. * * The arp hardware type should match the device type, except for FDDI, * which (according to RFC 1390) should always equal 1 (Ethernet). */ /* * Exceptions everywhere. AX.25 uses the AX.25 PID value not the * DIX code for the protocol. Make these device structure fields. */ switch (dev->type) { default: arp->ar_hrd = htons(dev->type); arp->ar_pro = htons(ETH_P_IP); break; #if IS_ENABLED(CONFIG_AX25) case ARPHRD_AX25: arp->ar_hrd = htons(ARPHRD_AX25); arp->ar_pro = htons(AX25_P_IP); break; #if IS_ENABLED(CONFIG_NETROM) case ARPHRD_NETROM: arp->ar_hrd = htons(ARPHRD_NETROM); arp->ar_pro = htons(AX25_P_IP); break; #endif #endif #if IS_ENABLED(CONFIG_FDDI) case ARPHRD_FDDI: arp->ar_hrd = htons(ARPHRD_ETHER); arp->ar_pro = htons(ETH_P_IP); break; #endif } arp->ar_hln = dev->addr_len; arp->ar_pln = 4; arp->ar_op = htons(type); arp_ptr = (unsigned char *)(arp + 1); memcpy(arp_ptr, src_hw, dev->addr_len); arp_ptr += dev->addr_len; memcpy(arp_ptr, &src_ip, 4); arp_ptr += 4; switch (dev->type) { #if IS_ENABLED(CONFIG_FIREWIRE_NET) case ARPHRD_IEEE1394: break; #endif default: if (target_hw) memcpy(arp_ptr, target_hw, dev->addr_len); else memset(arp_ptr, 0, dev->addr_len); arp_ptr += dev->addr_len; } memcpy(arp_ptr, &dest_ip, 4); return skb; out: kfree_skb(skb); return NULL; } EXPORT_SYMBOL(arp_create); static int arp_xmit_finish(struct net *net, struct sock *sk, struct sk_buff *skb) { return dev_queue_xmit(skb); } /* * Send an arp packet. */ void arp_xmit(struct sk_buff *skb) { rcu_read_lock(); /* Send it off, maybe filter it using firewalling first. */ NF_HOOK(NFPROTO_ARP, NF_ARP_OUT, dev_net_rcu(skb->dev), NULL, skb, NULL, skb->dev, arp_xmit_finish); rcu_read_unlock(); } EXPORT_SYMBOL(arp_xmit); static bool arp_is_garp(struct net *net, struct net_device *dev, int *addr_type, __be16 ar_op, __be32 sip, __be32 tip, unsigned char *sha, unsigned char *tha) { bool is_garp = tip == sip; /* Gratuitous ARP _replies_ also require target hwaddr to be * the same as source. */ if (is_garp && ar_op == htons(ARPOP_REPLY)) is_garp = /* IPv4 over IEEE 1394 doesn't provide target * hardware address field in its ARP payload. */ tha && !memcmp(tha, sha, dev->addr_len); if (is_garp) { *addr_type = inet_addr_type_dev_table(net, dev, sip); if (*addr_type != RTN_UNICAST) is_garp = false; } return is_garp; } /* * Process an arp request. */ static int arp_process(struct net *net, struct sock *sk, struct sk_buff *skb) { struct net_device *dev = skb->dev; struct in_device *in_dev = __in_dev_get_rcu(dev); struct arphdr *arp; unsigned char *arp_ptr; struct rtable *rt; unsigned char *sha; unsigned char *tha = NULL; __be32 sip, tip; u16 dev_type = dev->type; int addr_type; struct neighbour *n; struct dst_entry *reply_dst = NULL; bool is_garp = false; /* arp_rcv below verifies the ARP header and verifies the device * is ARP'able. */ if (!in_dev) goto out_free_skb; arp = arp_hdr(skb); switch (dev_type) { default: if (arp->ar_pro != htons(ETH_P_IP) || htons(dev_type) != arp->ar_hrd) goto out_free_skb; break; case ARPHRD_ETHER: case ARPHRD_FDDI: case ARPHRD_IEEE802: /* * ETHERNET, and Fibre Channel (which are IEEE 802 * devices, according to RFC 2625) devices will accept ARP * hardware types of either 1 (Ethernet) or 6 (IEEE 802.2). * This is the case also of FDDI, where the RFC 1390 says that * FDDI devices should accept ARP hardware of (1) Ethernet, * however, to be more robust, we'll accept both 1 (Ethernet) * or 6 (IEEE 802.2) */ if ((arp->ar_hrd != htons(ARPHRD_ETHER) && arp->ar_hrd != htons(ARPHRD_IEEE802)) || arp->ar_pro != htons(ETH_P_IP)) goto out_free_skb; break; case ARPHRD_AX25: if (arp->ar_pro != htons(AX25_P_IP) || arp->ar_hrd != htons(ARPHRD_AX25)) goto out_free_skb; break; case ARPHRD_NETROM: if (arp->ar_pro != htons(AX25_P_IP) || arp->ar_hrd != htons(ARPHRD_NETROM)) goto out_free_skb; break; } /* Understand only these message types */ if (arp->ar_op != htons(ARPOP_REPLY) && arp->ar_op != htons(ARPOP_REQUEST)) goto out_free_skb; /* * Extract fields */ arp_ptr = (unsigned char *)(arp + 1); sha = arp_ptr; arp_ptr += dev->addr_len; memcpy(&sip, arp_ptr, 4); arp_ptr += 4; switch (dev_type) { #if IS_ENABLED(CONFIG_FIREWIRE_NET) case ARPHRD_IEEE1394: break; #endif default: tha = arp_ptr; arp_ptr += dev->addr_len; } memcpy(&tip, arp_ptr, 4); /* * Check for bad requests for 127.x.x.x and requests for multicast * addresses. If this is one such, delete it. */ if (ipv4_is_multicast(tip) || (!IN_DEV_ROUTE_LOCALNET(in_dev) && ipv4_is_loopback(tip))) goto out_free_skb; /* * For some 802.11 wireless deployments (and possibly other networks), * there will be an ARP proxy and gratuitous ARP frames are attacks * and thus should not be accepted. */ if (sip == tip && IN_DEV_ORCONF(in_dev, DROP_GRATUITOUS_ARP)) goto out_free_skb; /* * Special case: We must set Frame Relay source Q.922 address */ if (dev_type == ARPHRD_DLCI) sha = dev->broadcast; /* * Process entry. The idea here is we want to send a reply if it is a * request for us or if it is a request for someone else that we hold * a proxy for. We want to add an entry to our cache if it is a reply * to us or if it is a request for our address. * (The assumption for this last is that if someone is requesting our * address, they are probably intending to talk to us, so it saves time * if we cache their address. Their address is also probably not in * our cache, since ours is not in their cache.) * * Putting this another way, we only care about replies if they are to * us, in which case we add them to the cache. For requests, we care * about those for us and those for our proxies. We reply to both, * and in the case of requests for us we add the requester to the arp * cache. */ if (arp->ar_op == htons(ARPOP_REQUEST) && skb_metadata_dst(skb)) reply_dst = (struct dst_entry *) iptunnel_metadata_reply(skb_metadata_dst(skb), GFP_ATOMIC); /* Special case: IPv4 duplicate address detection packet (RFC2131) */ if (sip == 0) { if (arp->ar_op == htons(ARPOP_REQUEST) && inet_addr_type_dev_table(net, dev, tip) == RTN_LOCAL && !arp_ignore(in_dev, sip, tip)) arp_send_dst(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha, dev->dev_addr, sha, reply_dst); goto out_consume_skb; } if (arp->ar_op == htons(ARPOP_REQUEST) && ip_route_input_noref(skb, tip, sip, 0, dev) == 0) { rt = skb_rtable(skb); addr_type = rt->rt_type; if (addr_type == RTN_LOCAL) { int dont_send; dont_send = arp_ignore(in_dev, sip, tip); if (!dont_send && IN_DEV_ARPFILTER(in_dev)) dont_send = arp_filter(sip, tip, dev); if (!dont_send) { n = neigh_event_ns(&arp_tbl, sha, &sip, dev); if (n) { arp_send_dst(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha, dev->dev_addr, sha, reply_dst); neigh_release(n); } } goto out_consume_skb; } else if (IN_DEV_FORWARD(in_dev)) { if (addr_type == RTN_UNICAST && (arp_fwd_proxy(in_dev, dev, rt) || arp_fwd_pvlan(in_dev, dev, rt, sip, tip) || (rt->dst.dev != dev && pneigh_lookup(&arp_tbl, net, &tip, dev)))) { n = neigh_event_ns(&arp_tbl, sha, &sip, dev); if (n) neigh_release(n); if (NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED || skb->pkt_type == PACKET_HOST || NEIGH_VAR(in_dev->arp_parms, PROXY_DELAY) == 0) { arp_send_dst(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha, dev->dev_addr, sha, reply_dst); } else { pneigh_enqueue(&arp_tbl, in_dev->arp_parms, skb); goto out_free_dst; } goto out_consume_skb; } } } /* Update our ARP tables */ n = __neigh_lookup(&arp_tbl, &sip, dev, 0); addr_type = -1; if (n || arp_accept(in_dev, sip)) { is_garp = arp_is_garp(net, dev, &addr_type, arp->ar_op, sip, tip, sha, tha); } if (arp_accept(in_dev, sip)) { /* Unsolicited ARP is not accepted by default. It is possible, that this option should be enabled for some devices (strip is candidate) */ if (!n && (is_garp || (arp->ar_op == htons(ARPOP_REPLY) && (addr_type == RTN_UNICAST || (addr_type < 0 && /* postpone calculation to as late as possible */ inet_addr_type_dev_table(net, dev, sip) == RTN_UNICAST))))) n = __neigh_lookup(&arp_tbl, &sip, dev, 1); } if (n) { int state = NUD_REACHABLE; int override; /* If several different ARP replies follows back-to-back, use the FIRST one. It is possible, if several proxy agents are active. Taking the first reply prevents arp trashing and chooses the fastest router. */ override = time_after(jiffies, n->updated + NEIGH_VAR(n->parms, LOCKTIME)) || is_garp; /* Broadcast replies and request packets do not assert neighbour reachability. */ if (arp->ar_op != htons(ARPOP_REPLY) || skb->pkt_type != PACKET_HOST) state = NUD_STALE; neigh_update(n, sha, state, override ? NEIGH_UPDATE_F_OVERRIDE : 0, 0); neigh_release(n); } out_consume_skb: consume_skb(skb); out_free_dst: dst_release(reply_dst); return NET_RX_SUCCESS; out_free_skb: kfree_skb(skb); return NET_RX_DROP; } static void parp_redo(struct sk_buff *skb) { arp_process(dev_net(skb->dev), NULL, skb); } static int arp_is_multicast(const void *pkey) { return ipv4_is_multicast(*((__be32 *)pkey)); } /* * Receive an arp request from the device layer. */ static int arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) { enum skb_drop_reason drop_reason; const struct arphdr *arp; /* do not tweak dropwatch on an ARP we will ignore */ if (dev->flags & IFF_NOARP || skb->pkt_type == PACKET_OTHERHOST || skb->pkt_type == PACKET_LOOPBACK) goto consumeskb; skb = skb_share_check(skb, GFP_ATOMIC); if (!skb) goto out_of_mem; /* ARP header, plus 2 device addresses, plus 2 IP addresses. */ drop_reason = pskb_may_pull_reason(skb, arp_hdr_len(dev)); if (drop_reason != SKB_NOT_DROPPED_YET) goto freeskb; arp = arp_hdr(skb); if (arp->ar_hln != dev->addr_len || arp->ar_pln != 4) { drop_reason = SKB_DROP_REASON_NOT_SPECIFIED; goto freeskb; } memset(NEIGH_CB(skb), 0, sizeof(struct neighbour_cb)); return NF_HOOK(NFPROTO_ARP, NF_ARP_IN, dev_net(dev), NULL, skb, dev, NULL, arp_process); consumeskb: consume_skb(skb); return NET_RX_SUCCESS; freeskb: kfree_skb_reason(skb, drop_reason); out_of_mem: return NET_RX_DROP; } /* * User level interface (ioctl) */ static struct net_device *arp_req_dev_by_name(struct net *net, struct arpreq *r, bool getarp) { struct net_device *dev; if (getarp) dev = dev_get_by_name_rcu(net, r->arp_dev); else dev = __dev_get_by_name(net, r->arp_dev); if (!dev) return ERR_PTR(-ENODEV); /* Mmmm... It is wrong... ARPHRD_NETROM == 0 */ if (!r->arp_ha.sa_family) r->arp_ha.sa_family = dev->type; if ((r->arp_flags & ATF_COM) && r->arp_ha.sa_family != dev->type) return ERR_PTR(-EINVAL); return dev; } static struct net_device *arp_req_dev(struct net *net, struct arpreq *r) { struct net_device *dev; struct rtable *rt; __be32 ip; if (r->arp_dev[0]) return arp_req_dev_by_name(net, r, false); if (r->arp_flags & ATF_PUBL) return NULL; ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr; rt = ip_route_output(net, ip, 0, 0, 0, RT_SCOPE_LINK); if (IS_ERR(rt)) return ERR_CAST(rt); dev = rt->dst.dev; ip_rt_put(rt); if (!dev) return ERR_PTR(-EINVAL); return dev; } /* * Set (create) an ARP cache entry. */ static int arp_req_set_proxy(struct net *net, struct net_device *dev, int on) { if (!dev) { IPV4_DEVCONF_ALL(net, PROXY_ARP) = on; return 0; } if (__in_dev_get_rtnl_net(dev)) { IN_DEV_CONF_SET(__in_dev_get_rtnl_net(dev), PROXY_ARP, on); return 0; } return -ENXIO; } static int arp_req_set_public(struct net *net, struct arpreq *r, struct net_device *dev) { __be32 mask = ((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr; if (!dev && (r->arp_flags & ATF_COM)) { dev = dev_getbyhwaddr(net, r->arp_ha.sa_family, r->arp_ha.sa_data); if (!dev) return -ENODEV; } if (mask) { __be32 ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr; return pneigh_create(&arp_tbl, net, &ip, dev, 0, 0, false); } return arp_req_set_proxy(net, dev, 1); } static int arp_req_set(struct net *net, struct arpreq *r) { struct neighbour *neigh; struct net_device *dev; __be32 ip; int err; dev = arp_req_dev(net, r); if (IS_ERR(dev)) return PTR_ERR(dev); if (r->arp_flags & ATF_PUBL) return arp_req_set_public(net, r, dev); switch (dev->type) { #if IS_ENABLED(CONFIG_FDDI) case ARPHRD_FDDI: /* * According to RFC 1390, FDDI devices should accept ARP * hardware types of 1 (Ethernet). However, to be more * robust, we'll accept hardware types of either 1 (Ethernet) * or 6 (IEEE 802.2). */ if (r->arp_ha.sa_family != ARPHRD_FDDI && r->arp_ha.sa_family != ARPHRD_ETHER && r->arp_ha.sa_family != ARPHRD_IEEE802) return -EINVAL; break; #endif default: if (r->arp_ha.sa_family != dev->type) return -EINVAL; break; } ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr; neigh = __neigh_lookup_errno(&arp_tbl, &ip, dev); err = PTR_ERR(neigh); if (!IS_ERR(neigh)) { unsigned int state = NUD_STALE; if (r->arp_flags & ATF_PERM) { r->arp_flags |= ATF_COM; state = NUD_PERMANENT; } err = neigh_update(neigh, (r->arp_flags & ATF_COM) ? r->arp_ha.sa_data : NULL, state, NEIGH_UPDATE_F_OVERRIDE | NEIGH_UPDATE_F_ADMIN, 0); neigh_release(neigh); } return err; } static unsigned int arp_state_to_flags(struct neighbour *neigh) { if (neigh->nud_state&NUD_PERMANENT) return ATF_PERM | ATF_COM; else if (neigh->nud_state&NUD_VALID) return ATF_COM; else return 0; } /* * Get an ARP cache entry. */ static int arp_req_get(struct net *net, struct arpreq *r) { __be32 ip = ((struct sockaddr_in *) &r->arp_pa)->sin_addr.s_addr; struct neighbour *neigh; struct net_device *dev; if (!r->arp_dev[0]) return -ENODEV; dev = arp_req_dev_by_name(net, r, true); if (IS_ERR(dev)) return PTR_ERR(dev); neigh = neigh_lookup(&arp_tbl, &ip, dev); if (!neigh) return -ENXIO; if (READ_ONCE(neigh->nud_state) & NUD_NOARP) { neigh_release(neigh); return -ENXIO; } read_lock_bh(&neigh->lock); memcpy(r->arp_ha.sa_data, neigh->ha, min(dev->addr_len, sizeof(r->arp_ha.sa_data_min))); r->arp_flags = arp_state_to_flags(neigh); read_unlock_bh(&neigh->lock); neigh_release(neigh); r->arp_ha.sa_family = dev->type; netdev_copy_name(dev, r->arp_dev); return 0; } int arp_invalidate(struct net_device *dev, __be32 ip, bool force) { struct neighbour *neigh = neigh_lookup(&arp_tbl, &ip, dev); int err = -ENXIO; struct neigh_table *tbl = &arp_tbl; if (neigh) { if ((READ_ONCE(neigh->nud_state) & NUD_VALID) && !force) { neigh_release(neigh); return 0; } if (READ_ONCE(neigh->nud_state) & ~NUD_NOARP) err = neigh_update(neigh, NULL, NUD_FAILED, NEIGH_UPDATE_F_OVERRIDE| NEIGH_UPDATE_F_ADMIN, 0); write_lock_bh(&tbl->lock); neigh_release(neigh); neigh_remove_one(neigh); write_unlock_bh(&tbl->lock); } return err; } static int arp_req_delete_public(struct net *net, struct arpreq *r, struct net_device *dev) { __be32 mask = ((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr; if (mask) { __be32 ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr; return pneigh_delete(&arp_tbl, net, &ip, dev); } return arp_req_set_proxy(net, dev, 0); } static int arp_req_delete(struct net *net, struct arpreq *r) { struct net_device *dev; __be32 ip; dev = arp_req_dev(net, r); if (IS_ERR(dev)) return PTR_ERR(dev); if (r->arp_flags & ATF_PUBL) return arp_req_delete_public(net, r, dev); ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr; return arp_invalidate(dev, ip, true); } /* * Handle an ARP layer I/O control request. */ int arp_ioctl(struct net *net, unsigned int cmd, void __user *arg) { struct arpreq r; __be32 *netmask; int err; switch (cmd) { case SIOCDARP: case SIOCSARP: if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; fallthrough; case SIOCGARP: err = copy_from_user(&r, arg, sizeof(struct arpreq)); if (err) return -EFAULT; break; default: return -EINVAL; } if (r.arp_pa.sa_family != AF_INET) return -EPFNOSUPPORT; if (!(r.arp_flags & ATF_PUBL) && (r.arp_flags & (ATF_NETMASK | ATF_DONTPUB))) return -EINVAL; netmask = &((struct sockaddr_in *)&r.arp_netmask)->sin_addr.s_addr; if (!(r.arp_flags & ATF_NETMASK)) *netmask = htonl(0xFFFFFFFFUL); else if (*netmask && *netmask != htonl(0xFFFFFFFFUL)) return -EINVAL; switch (cmd) { case SIOCDARP: rtnl_net_lock(net); err = arp_req_delete(net, &r); rtnl_net_unlock(net); break; case SIOCSARP: rtnl_net_lock(net); err = arp_req_set(net, &r); rtnl_net_unlock(net); break; case SIOCGARP: rcu_read_lock(); err = arp_req_get(net, &r); rcu_read_unlock(); if (!err && copy_to_user(arg, &r, sizeof(r))) err = -EFAULT; break; } return err; } static int arp_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct netdev_notifier_change_info *change_info; struct in_device *in_dev; bool evict_nocarrier; switch (event) { case NETDEV_CHANGEADDR: neigh_changeaddr(&arp_tbl, dev); rt_cache_flush(dev_net(dev)); break; case NETDEV_CHANGE: change_info = ptr; if (change_info->flags_changed & IFF_NOARP) neigh_changeaddr(&arp_tbl, dev); in_dev = __in_dev_get_rtnl(dev); if (!in_dev) evict_nocarrier = true; else evict_nocarrier = IN_DEV_ARP_EVICT_NOCARRIER(in_dev); if (evict_nocarrier && !netif_carrier_ok(dev)) neigh_carrier_down(&arp_tbl, dev); break; default: break; } return NOTIFY_DONE; } static struct notifier_block arp_netdev_notifier = { .notifier_call = arp_netdev_event, }; /* Note, that it is not on notifier chain. It is necessary, that this routine was called after route cache will be flushed. */ void arp_ifdown(struct net_device *dev) { neigh_ifdown(&arp_tbl, dev); } /* * Called once on startup. */ static struct packet_type arp_packet_type __read_mostly = { .type = cpu_to_be16(ETH_P_ARP), .func = arp_rcv, }; #ifdef CONFIG_PROC_FS #if IS_ENABLED(CONFIG_AX25) /* * ax25 -> ASCII conversion */ static void ax2asc2(ax25_address *a, char *buf) { char c, *s; int n; for (n = 0, s = buf; n < 6; n++) { c = (a->ax25_call[n] >> 1) & 0x7F; if (c != ' ') *s++ = c; } *s++ = '-'; n = (a->ax25_call[6] >> 1) & 0x0F; if (n > 9) { *s++ = '1'; n -= 10; } *s++ = n + '0'; *s++ = '\0'; if (*buf == '\0' || *buf == '-') { buf[0] = '*'; buf[1] = '\0'; } } #endif /* CONFIG_AX25 */ #define HBUFFERLEN 30 static void arp_format_neigh_entry(struct seq_file *seq, struct neighbour *n) { char hbuffer[HBUFFERLEN]; int k, j; char tbuf[16]; struct net_device *dev = n->dev; int hatype = dev->type; read_lock(&n->lock); /* Convert hardware address to XX:XX:XX:XX ... form. */ #if IS_ENABLED(CONFIG_AX25) if (hatype == ARPHRD_AX25 || hatype == ARPHRD_NETROM) ax2asc2((ax25_address *)n->ha, hbuffer); else { #endif for (k = 0, j = 0; k < HBUFFERLEN - 3 && j < dev->addr_len; j++) { hbuffer[k++] = hex_asc_hi(n->ha[j]); hbuffer[k++] = hex_asc_lo(n->ha[j]); hbuffer[k++] = ':'; } if (k != 0) --k; hbuffer[k] = 0; #if IS_ENABLED(CONFIG_AX25) } #endif sprintf(tbuf, "%pI4", n->primary_key); seq_printf(seq, "%-16s 0x%-10x0x%-10x%-17s * %s\n", tbuf, hatype, arp_state_to_flags(n), hbuffer, dev->name); read_unlock(&n->lock); } static void arp_format_pneigh_entry(struct seq_file *seq, struct pneigh_entry *n) { struct net_device *dev = n->dev; int hatype = dev ? dev->type : 0; char tbuf[16]; sprintf(tbuf, "%pI4", n->key); seq_printf(seq, "%-16s 0x%-10x0x%-10x%s * %s\n", tbuf, hatype, ATF_PUBL | ATF_PERM, "00:00:00:00:00:00", dev ? dev->name : "*"); } static int arp_seq_show(struct seq_file *seq, void *v) { if (v == SEQ_START_TOKEN) { seq_puts(seq, "IP address HW type Flags " "HW address Mask Device\n"); } else { struct neigh_seq_state *state = seq->private; if (state->flags & NEIGH_SEQ_IS_PNEIGH) arp_format_pneigh_entry(seq, v); else arp_format_neigh_entry(seq, v); } return 0; } static void *arp_seq_start(struct seq_file *seq, loff_t *pos) { /* Don't want to confuse "arp -a" w/ magic entries, * so we tell the generic iterator to skip NUD_NOARP. */ return neigh_seq_start(seq, pos, &arp_tbl, NEIGH_SEQ_SKIP_NOARP); } static const struct seq_operations arp_seq_ops = { .start = arp_seq_start, .next = neigh_seq_next, .stop = neigh_seq_stop, .show = arp_seq_show, }; #endif /* CONFIG_PROC_FS */ static int __net_init arp_net_init(struct net *net) { if (!proc_create_net("arp", 0444, net->proc_net, &arp_seq_ops, sizeof(struct neigh_seq_state))) return -ENOMEM; return 0; } static void __net_exit arp_net_exit(struct net *net) { remove_proc_entry("arp", net->proc_net); } static struct pernet_operations arp_net_ops = { .init = arp_net_init, .exit = arp_net_exit, }; void __init arp_init(void) { neigh_table_init(NEIGH_ARP_TABLE, &arp_tbl); dev_add_pack(&arp_packet_type); register_pernet_subsys(&arp_net_ops); #ifdef CONFIG_SYSCTL neigh_sysctl_register(NULL, &arp_tbl.parms, NULL); #endif register_netdevice_notifier(&arp_netdev_notifier); } |
| 7 7 7 7 7 7 7 7 1 1 1 1 1 1 1 7 7 7 7 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 | // SPDX-License-Identifier: GPL-2.0-only /* * Driver for DiBcom DiB3000MC/P-demodulator. * * Copyright (C) 2004-7 DiBcom (http://www.dibcom.fr/) * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de) * * This code is partially based on the previous dib3000mc.c . */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> #include <linux/slab.h> #include <linux/i2c.h> #include <media/dvb_frontend.h> #include "dib3000mc.h" static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "turn on debugging (default: 0)"); static int buggy_sfn_workaround; module_param(buggy_sfn_workaround, int, 0644); MODULE_PARM_DESC(buggy_sfn_workaround, "Enable work-around for buggy SFNs (default: 0)"); #define dprintk(fmt, arg...) do { \ if (debug) \ printk(KERN_DEBUG pr_fmt("%s: " fmt), \ __func__, ##arg); \ } while (0) struct dib3000mc_state { struct dvb_frontend demod; struct dib3000mc_config *cfg; u8 i2c_addr; struct i2c_adapter *i2c_adap; struct dibx000_i2c_master i2c_master; u32 timf; u32 current_bandwidth; u16 dev_id; u8 sfn_workaround_active :1; }; static u16 dib3000mc_read_word(struct dib3000mc_state *state, u16 reg) { struct i2c_msg msg[2] = { { .addr = state->i2c_addr >> 1, .flags = 0, .len = 2 }, { .addr = state->i2c_addr >> 1, .flags = I2C_M_RD, .len = 2 }, }; u16 word; u8 *b; b = kmalloc(4, GFP_KERNEL); if (!b) return 0; b[0] = (reg >> 8) | 0x80; b[1] = reg; b[2] = 0; b[3] = 0; msg[0].buf = b; msg[1].buf = b + 2; if (i2c_transfer(state->i2c_adap, msg, 2) != 2) dprintk("i2c read error on %d\n",reg); word = (b[2] << 8) | b[3]; kfree(b); return word; } static int dib3000mc_write_word(struct dib3000mc_state *state, u16 reg, u16 val) { struct i2c_msg msg = { .addr = state->i2c_addr >> 1, .flags = 0, .len = 4 }; int rc; u8 *b; b = kmalloc(4, GFP_KERNEL); if (!b) return -ENOMEM; b[0] = reg >> 8; b[1] = reg; b[2] = val >> 8; b[3] = val; msg.buf = b; rc = i2c_transfer(state->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0; kfree(b); return rc; } static int dib3000mc_identify(struct dib3000mc_state *state) { u16 value; if ((value = dib3000mc_read_word(state, 1025)) != 0x01b3) { dprintk("-E- DiB3000MC/P: wrong Vendor ID (read=0x%x)\n",value); return -EREMOTEIO; } value = dib3000mc_read_word(state, 1026); if (value != 0x3001 && value != 0x3002) { dprintk("-E- DiB3000MC/P: wrong Device ID (%x)\n",value); return -EREMOTEIO; } state->dev_id = value; dprintk("-I- found DiB3000MC/P: %x\n",state->dev_id); return 0; } static int dib3000mc_set_timing(struct dib3000mc_state *state, s16 nfft, u32 bw, u8 update_offset) { u32 timf; if (state->timf == 0) { timf = 1384402; // default value for 8MHz if (update_offset) msleep(200); // first time we do an update } else timf = state->timf; timf *= (bw / 1000); if (update_offset) { s16 tim_offs = dib3000mc_read_word(state, 416); if (tim_offs & 0x2000) tim_offs -= 0x4000; if (nfft == TRANSMISSION_MODE_2K) tim_offs *= 4; timf += tim_offs; state->timf = timf / (bw / 1000); } dprintk("timf: %d\n", timf); dib3000mc_write_word(state, 23, (u16) (timf >> 16)); dib3000mc_write_word(state, 24, (u16) (timf ) & 0xffff); return 0; } static int dib3000mc_setup_pwm_state(struct dib3000mc_state *state) { u16 reg_51, reg_52 = state->cfg->agc->setup & 0xfefb; if (state->cfg->pwm3_inversion) { reg_51 = (2 << 14) | (0 << 10) | (7 << 6) | (2 << 2) | (2 << 0); reg_52 |= (1 << 2); } else { reg_51 = (2 << 14) | (4 << 10) | (7 << 6) | (2 << 2) | (2 << 0); reg_52 |= (1 << 8); } dib3000mc_write_word(state, 51, reg_51); dib3000mc_write_word(state, 52, reg_52); if (state->cfg->use_pwm3) dib3000mc_write_word(state, 245, (1 << 3) | (1 << 0)); else dib3000mc_write_word(state, 245, 0); dib3000mc_write_word(state, 1040, 0x3); return 0; } static int dib3000mc_set_output_mode(struct dib3000mc_state *state, int mode) { int ret = 0; u16 fifo_threshold = 1792; u16 outreg = 0; u16 outmode = 0; u16 elecout = 1; u16 smo_reg = dib3000mc_read_word(state, 206) & 0x0010; /* keep the pid_parse bit */ dprintk("-I- Setting output mode for demod %p to %d\n", &state->demod, mode); switch (mode) { case OUTMODE_HIGH_Z: // disable elecout = 0; break; case OUTMODE_MPEG2_PAR_GATED_CLK: // STBs with parallel gated clock outmode = 0; break; case OUTMODE_MPEG2_PAR_CONT_CLK: // STBs with parallel continues clock outmode = 1; break; case OUTMODE_MPEG2_SERIAL: // STBs with serial input outmode = 2; break; case OUTMODE_MPEG2_FIFO: // e.g. USB feeding elecout = 3; /*ADDR @ 206 : P_smo_error_discard [1;6:6] = 0 P_smo_rs_discard [1;5:5] = 0 P_smo_pid_parse [1;4:4] = 0 P_smo_fifo_flush [1;3:3] = 0 P_smo_mode [2;2:1] = 11 P_smo_ovf_prot [1;0:0] = 0 */ smo_reg |= 3 << 1; fifo_threshold = 512; outmode = 5; break; case OUTMODE_DIVERSITY: outmode = 4; elecout = 1; break; default: dprintk("Unhandled output_mode passed to be set for demod %p\n",&state->demod); outmode = 0; break; } if ((state->cfg->output_mpeg2_in_188_bytes)) smo_reg |= (1 << 5); // P_smo_rs_discard [1;5:5] = 1 outreg = dib3000mc_read_word(state, 244) & 0x07FF; outreg |= (outmode << 11); ret |= dib3000mc_write_word(state, 244, outreg); ret |= dib3000mc_write_word(state, 206, smo_reg); /*smo_ mode*/ ret |= dib3000mc_write_word(state, 207, fifo_threshold); /* synchronous fread */ ret |= dib3000mc_write_word(state, 1040, elecout); /* P_out_cfg */ return ret; } static int dib3000mc_set_bandwidth(struct dib3000mc_state *state, u32 bw) { u16 bw_cfg[6] = { 0 }; u16 imp_bw_cfg[3] = { 0 }; u16 reg; /* settings here are for 27.7MHz */ switch (bw) { case 8000: bw_cfg[0] = 0x0019; bw_cfg[1] = 0x5c30; bw_cfg[2] = 0x0054; bw_cfg[3] = 0x88a0; bw_cfg[4] = 0x01a6; bw_cfg[5] = 0xab20; imp_bw_cfg[0] = 0x04db; imp_bw_cfg[1] = 0x00db; imp_bw_cfg[2] = 0x00b7; break; case 7000: bw_cfg[0] = 0x001c; bw_cfg[1] = 0xfba5; bw_cfg[2] = 0x0060; bw_cfg[3] = 0x9c25; bw_cfg[4] = 0x01e3; bw_cfg[5] = 0x0cb7; imp_bw_cfg[0] = 0x04c0; imp_bw_cfg[1] = 0x00c0; imp_bw_cfg[2] = 0x00a0; break; case 6000: bw_cfg[0] = 0x0021; bw_cfg[1] = 0xd040; bw_cfg[2] = 0x0070; bw_cfg[3] = 0xb62b; bw_cfg[4] = 0x0233; bw_cfg[5] = 0x8ed5; imp_bw_cfg[0] = 0x04a5; imp_bw_cfg[1] = 0x00a5; imp_bw_cfg[2] = 0x0089; break; case 5000: bw_cfg[0] = 0x0028; bw_cfg[1] = 0x9380; bw_cfg[2] = 0x0087; bw_cfg[3] = 0x4100; bw_cfg[4] = 0x02a4; bw_cfg[5] = 0x4500; imp_bw_cfg[0] = 0x0489; imp_bw_cfg[1] = 0x0089; imp_bw_cfg[2] = 0x0072; break; default: return -EINVAL; } for (reg = 6; reg < 12; reg++) dib3000mc_write_word(state, reg, bw_cfg[reg - 6]); dib3000mc_write_word(state, 12, 0x0000); dib3000mc_write_word(state, 13, 0x03e8); dib3000mc_write_word(state, 14, 0x0000); dib3000mc_write_word(state, 15, 0x03f2); dib3000mc_write_word(state, 16, 0x0001); dib3000mc_write_word(state, 17, 0xb0d0); // P_sec_len dib3000mc_write_word(state, 18, 0x0393); dib3000mc_write_word(state, 19, 0x8700); for (reg = 55; reg < 58; reg++) dib3000mc_write_word(state, reg, imp_bw_cfg[reg - 55]); // Timing configuration dib3000mc_set_timing(state, TRANSMISSION_MODE_2K, bw, 0); return 0; } static u16 impulse_noise_val[29] = { 0x38, 0x6d9, 0x3f28, 0x7a7, 0x3a74, 0x196, 0x32a, 0x48c, 0x3ffe, 0x7f3, 0x2d94, 0x76, 0x53d, 0x3ff8, 0x7e3, 0x3320, 0x76, 0x5b3, 0x3feb, 0x7d2, 0x365e, 0x76, 0x48c, 0x3ffe, 0x5b3, 0x3feb, 0x76, 0x0000, 0xd }; static void dib3000mc_set_impulse_noise(struct dib3000mc_state *state, u8 mode, s16 nfft) { u16 i; for (i = 58; i < 87; i++) dib3000mc_write_word(state, i, impulse_noise_val[i-58]); if (nfft == TRANSMISSION_MODE_8K) { dib3000mc_write_word(state, 58, 0x3b); dib3000mc_write_word(state, 84, 0x00); dib3000mc_write_word(state, 85, 0x8200); } dib3000mc_write_word(state, 34, 0x1294); dib3000mc_write_word(state, 35, 0x1ff8); if (mode == 1) dib3000mc_write_word(state, 55, dib3000mc_read_word(state, 55) | (1 << 10)); } static int dib3000mc_init(struct dvb_frontend *demod) { struct dib3000mc_state *state = demod->demodulator_priv; struct dibx000_agc_config *agc = state->cfg->agc; // Restart Configuration dib3000mc_write_word(state, 1027, 0x8000); dib3000mc_write_word(state, 1027, 0x0000); // power up the demod + mobility configuration dib3000mc_write_word(state, 140, 0x0000); dib3000mc_write_word(state, 1031, 0); if (state->cfg->mobile_mode) { dib3000mc_write_word(state, 139, 0x0000); dib3000mc_write_word(state, 141, 0x0000); dib3000mc_write_word(state, 175, 0x0002); dib3000mc_write_word(state, 1032, 0x0000); } else { dib3000mc_write_word(state, 139, 0x0001); dib3000mc_write_word(state, 141, 0x0000); dib3000mc_write_word(state, 175, 0x0000); dib3000mc_write_word(state, 1032, 0x012C); } dib3000mc_write_word(state, 1033, 0x0000); // P_clk_cfg dib3000mc_write_word(state, 1037, 0x3130); // other configurations // P_ctrl_sfreq dib3000mc_write_word(state, 33, (5 << 0)); dib3000mc_write_word(state, 88, (1 << 10) | (0x10 << 0)); // Phase noise control // P_fft_phacor_inh, P_fft_phacor_cpe, P_fft_powrange dib3000mc_write_word(state, 99, (1 << 9) | (0x20 << 0)); if (state->cfg->phase_noise_mode == 0) dib3000mc_write_word(state, 111, 0x00); else dib3000mc_write_word(state, 111, 0x02); // P_agc_global dib3000mc_write_word(state, 50, 0x8000); // agc setup misc dib3000mc_setup_pwm_state(state); // P_agc_counter_lock dib3000mc_write_word(state, 53, 0x87); // P_agc_counter_unlock dib3000mc_write_word(state, 54, 0x87); /* agc */ dib3000mc_write_word(state, 36, state->cfg->max_time); dib3000mc_write_word(state, 37, (state->cfg->agc_command1 << 13) | (state->cfg->agc_command2 << 12) | (0x1d << 0)); dib3000mc_write_word(state, 38, state->cfg->pwm3_value); dib3000mc_write_word(state, 39, state->cfg->ln_adc_level); // set_agc_loop_Bw dib3000mc_write_word(state, 40, 0x0179); dib3000mc_write_word(state, 41, 0x03f0); dib3000mc_write_word(state, 42, agc->agc1_max); dib3000mc_write_word(state, 43, agc->agc1_min); dib3000mc_write_word(state, 44, agc->agc2_max); dib3000mc_write_word(state, 45, agc->agc2_min); dib3000mc_write_word(state, 46, (agc->agc1_pt1 << 8) | agc->agc1_pt2); dib3000mc_write_word(state, 47, (agc->agc1_slope1 << 8) | agc->agc1_slope2); dib3000mc_write_word(state, 48, (agc->agc2_pt1 << 8) | agc->agc2_pt2); dib3000mc_write_word(state, 49, (agc->agc2_slope1 << 8) | agc->agc2_slope2); // Begin: TimeOut registers // P_pha3_thres dib3000mc_write_word(state, 110, 3277); // P_timf_alpha = 6, P_corm_alpha = 6, P_corm_thres = 0x80 dib3000mc_write_word(state, 26, 0x6680); // lock_mask0 dib3000mc_write_word(state, 1, 4); // lock_mask1 dib3000mc_write_word(state, 2, 4); // lock_mask2 dib3000mc_write_word(state, 3, 0x1000); // P_search_maxtrial=1 dib3000mc_write_word(state, 5, 1); dib3000mc_set_bandwidth(state, 8000); // div_lock_mask dib3000mc_write_word(state, 4, 0x814); dib3000mc_write_word(state, 21, (1 << 9) | 0x164); dib3000mc_write_word(state, 22, 0x463d); // Spurious rm cfg // P_cspu_regul, P_cspu_win_cut dib3000mc_write_word(state, 120, 0x200f); // P_adp_selec_monit dib3000mc_write_word(state, 134, 0); // Fec cfg dib3000mc_write_word(state, 195, 0x10); // diversity register: P_dvsy_sync_wait.. dib3000mc_write_word(state, 180, 0x2FF0); // Impulse noise configuration dib3000mc_set_impulse_noise(state, 0, TRANSMISSION_MODE_8K); // output mode set-up dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); /* close the i2c-gate */ dib3000mc_write_word(state, 769, (1 << 7) ); return 0; } static int dib3000mc_sleep(struct dvb_frontend *demod) { struct dib3000mc_state *state = demod->demodulator_priv; dib3000mc_write_word(state, 1031, 0xFFFF); dib3000mc_write_word(state, 1032, 0xFFFF); dib3000mc_write_word(state, 1033, 0xFFF0); return 0; } static void dib3000mc_set_adp_cfg(struct dib3000mc_state *state, s16 qam) { u16 cfg[4] = { 0 },reg; switch (qam) { case QPSK: cfg[0] = 0x099a; cfg[1] = 0x7fae; cfg[2] = 0x0333; cfg[3] = 0x7ff0; break; case QAM_16: cfg[0] = 0x023d; cfg[1] = 0x7fdf; cfg[2] = 0x00a4; cfg[3] = 0x7ff0; break; case QAM_64: cfg[0] = 0x0148; cfg[1] = 0x7ff0; cfg[2] = 0x00a4; cfg[3] = 0x7ff8; break; } for (reg = 129; reg < 133; reg++) dib3000mc_write_word(state, reg, cfg[reg - 129]); } static void dib3000mc_set_channel_cfg(struct dib3000mc_state *state, struct dtv_frontend_properties *ch, u16 seq) { u16 value; u32 bw = BANDWIDTH_TO_KHZ(ch->bandwidth_hz); dib3000mc_set_bandwidth(state, bw); dib3000mc_set_timing(state, ch->transmission_mode, bw, 0); #if 1 dib3000mc_write_word(state, 100, (16 << 6) + 9); #else if (boost) dib3000mc_write_word(state, 100, (11 << 6) + 6); else dib3000mc_write_word(state, 100, (16 << 6) + 9); #endif dib3000mc_write_word(state, 1027, 0x0800); dib3000mc_write_word(state, 1027, 0x0000); //Default cfg isi offset adp dib3000mc_write_word(state, 26, 0x6680); dib3000mc_write_word(state, 29, 0x1273); dib3000mc_write_word(state, 33, 5); dib3000mc_set_adp_cfg(state, QAM_16); dib3000mc_write_word(state, 133, 15564); dib3000mc_write_word(state, 12 , 0x0); dib3000mc_write_word(state, 13 , 0x3e8); dib3000mc_write_word(state, 14 , 0x0); dib3000mc_write_word(state, 15 , 0x3f2); dib3000mc_write_word(state, 93,0); dib3000mc_write_word(state, 94,0); dib3000mc_write_word(state, 95,0); dib3000mc_write_word(state, 96,0); dib3000mc_write_word(state, 97,0); dib3000mc_write_word(state, 98,0); dib3000mc_set_impulse_noise(state, 0, ch->transmission_mode); value = 0; switch (ch->transmission_mode) { case TRANSMISSION_MODE_2K: value |= (0 << 7); break; default: case TRANSMISSION_MODE_8K: value |= (1 << 7); break; } switch (ch->guard_interval) { case GUARD_INTERVAL_1_32: value |= (0 << 5); break; case GUARD_INTERVAL_1_16: value |= (1 << 5); break; case GUARD_INTERVAL_1_4: value |= (3 << 5); break; default: case GUARD_INTERVAL_1_8: value |= (2 << 5); break; } switch (ch->modulation) { case QPSK: value |= (0 << 3); break; case QAM_16: value |= (1 << 3); break; default: case QAM_64: value |= (2 << 3); break; } switch (HIERARCHY_1) { case HIERARCHY_2: value |= 2; break; case HIERARCHY_4: value |= 4; break; default: case HIERARCHY_1: value |= 1; break; } dib3000mc_write_word(state, 0, value); dib3000mc_write_word(state, 5, (1 << 8) | ((seq & 0xf) << 4)); value = 0; if (ch->hierarchy == 1) value |= (1 << 4); if (1 == 1) value |= 1; switch ((ch->hierarchy == 0 || 1 == 1) ? ch->code_rate_HP : ch->code_rate_LP) { case FEC_2_3: value |= (2 << 1); break; case FEC_3_4: value |= (3 << 1); break; case FEC_5_6: value |= (5 << 1); break; case FEC_7_8: value |= (7 << 1); break; default: case FEC_1_2: value |= (1 << 1); break; } dib3000mc_write_word(state, 181, value); // diversity synchro delay add 50% SFN margin switch (ch->transmission_mode) { case TRANSMISSION_MODE_8K: value = 256; break; case TRANSMISSION_MODE_2K: default: value = 64; break; } switch (ch->guard_interval) { case GUARD_INTERVAL_1_16: value *= 2; break; case GUARD_INTERVAL_1_8: value *= 4; break; case GUARD_INTERVAL_1_4: value *= 8; break; default: case GUARD_INTERVAL_1_32: value *= 1; break; } value <<= 4; value |= dib3000mc_read_word(state, 180) & 0x000f; dib3000mc_write_word(state, 180, value); // restart demod value = dib3000mc_read_word(state, 0); dib3000mc_write_word(state, 0, value | (1 << 9)); dib3000mc_write_word(state, 0, value); msleep(30); dib3000mc_set_impulse_noise(state, state->cfg->impulse_noise_mode, ch->transmission_mode); } static int dib3000mc_autosearch_start(struct dvb_frontend *demod) { struct dtv_frontend_properties *chan = &demod->dtv_property_cache; struct dib3000mc_state *state = demod->demodulator_priv; u16 reg; // u32 val; struct dtv_frontend_properties schan; schan = *chan; /* TODO what is that ? */ /* a channel for autosearch */ schan.transmission_mode = TRANSMISSION_MODE_8K; schan.guard_interval = GUARD_INTERVAL_1_32; schan.modulation = QAM_64; schan.code_rate_HP = FEC_2_3; schan.code_rate_LP = FEC_2_3; schan.hierarchy = 0; dib3000mc_set_channel_cfg(state, &schan, 11); reg = dib3000mc_read_word(state, 0); dib3000mc_write_word(state, 0, reg | (1 << 8)); dib3000mc_read_word(state, 511); dib3000mc_write_word(state, 0, reg); return 0; } static int dib3000mc_autosearch_is_irq(struct dvb_frontend *demod) { struct dib3000mc_state *state = demod->demodulator_priv; u16 irq_pending = dib3000mc_read_word(state, 511); if (irq_pending & 0x1) // failed return 1; if (irq_pending & 0x2) // succeeded return 2; return 0; // still pending } static int dib3000mc_tune(struct dvb_frontend *demod) { struct dtv_frontend_properties *ch = &demod->dtv_property_cache; struct dib3000mc_state *state = demod->demodulator_priv; // ** configure demod ** dib3000mc_set_channel_cfg(state, ch, 0); // activates isi if (state->sfn_workaround_active) { dprintk("SFN workaround is active\n"); dib3000mc_write_word(state, 29, 0x1273); dib3000mc_write_word(state, 108, 0x4000); // P_pha3_force_pha_shift } else { dib3000mc_write_word(state, 29, 0x1073); dib3000mc_write_word(state, 108, 0x0000); // P_pha3_force_pha_shift } dib3000mc_set_adp_cfg(state, (u8)ch->modulation); if (ch->transmission_mode == TRANSMISSION_MODE_8K) { dib3000mc_write_word(state, 26, 38528); dib3000mc_write_word(state, 33, 8); } else { dib3000mc_write_word(state, 26, 30336); dib3000mc_write_word(state, 33, 6); } if (dib3000mc_read_word(state, 509) & 0x80) dib3000mc_set_timing(state, ch->transmission_mode, BANDWIDTH_TO_KHZ(ch->bandwidth_hz), 1); return 0; } struct i2c_adapter * dib3000mc_get_tuner_i2c_master(struct dvb_frontend *demod, int gating) { struct dib3000mc_state *st = demod->demodulator_priv; return dibx000_get_i2c_adapter(&st->i2c_master, DIBX000_I2C_INTERFACE_TUNER, gating); } EXPORT_SYMBOL(dib3000mc_get_tuner_i2c_master); static int dib3000mc_get_frontend(struct dvb_frontend* fe, struct dtv_frontend_properties *fep) { struct dib3000mc_state *state = fe->demodulator_priv; u16 tps = dib3000mc_read_word(state,458); fep->inversion = INVERSION_AUTO; fep->bandwidth_hz = state->current_bandwidth; switch ((tps >> 8) & 0x1) { case 0: fep->transmission_mode = TRANSMISSION_MODE_2K; break; case 1: fep->transmission_mode = TRANSMISSION_MODE_8K; break; } switch (tps & 0x3) { case 0: fep->guard_interval = GUARD_INTERVAL_1_32; break; case 1: fep->guard_interval = GUARD_INTERVAL_1_16; break; case 2: fep->guard_interval = GUARD_INTERVAL_1_8; break; case 3: fep->guard_interval = GUARD_INTERVAL_1_4; break; } switch ((tps >> 13) & 0x3) { case 0: fep->modulation = QPSK; break; case 1: fep->modulation = QAM_16; break; case 2: default: fep->modulation = QAM_64; break; } /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */ /* (tps >> 12) & 0x1 == hrch is used, (tps >> 9) & 0x7 == alpha */ fep->hierarchy = HIERARCHY_NONE; switch ((tps >> 5) & 0x7) { case 1: fep->code_rate_HP = FEC_1_2; break; case 2: fep->code_rate_HP = FEC_2_3; break; case 3: fep->code_rate_HP = FEC_3_4; break; case 5: fep->code_rate_HP = FEC_5_6; break; case 7: default: fep->code_rate_HP = FEC_7_8; break; } switch ((tps >> 2) & 0x7) { case 1: fep->code_rate_LP = FEC_1_2; break; case 2: fep->code_rate_LP = FEC_2_3; break; case 3: fep->code_rate_LP = FEC_3_4; break; case 5: fep->code_rate_LP = FEC_5_6; break; case 7: default: fep->code_rate_LP = FEC_7_8; break; } return 0; } static int dib3000mc_set_frontend(struct dvb_frontend *fe) { struct dtv_frontend_properties *fep = &fe->dtv_property_cache; struct dib3000mc_state *state = fe->demodulator_priv; int ret; dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); state->current_bandwidth = fep->bandwidth_hz; dib3000mc_set_bandwidth(state, BANDWIDTH_TO_KHZ(fep->bandwidth_hz)); /* maybe the parameter has been changed */ state->sfn_workaround_active = buggy_sfn_workaround; if (fe->ops.tuner_ops.set_params) { fe->ops.tuner_ops.set_params(fe); msleep(100); } if (fep->transmission_mode == TRANSMISSION_MODE_AUTO || fep->guard_interval == GUARD_INTERVAL_AUTO || fep->modulation == QAM_AUTO || fep->code_rate_HP == FEC_AUTO) { int i = 1000, found; dib3000mc_autosearch_start(fe); do { msleep(1); found = dib3000mc_autosearch_is_irq(fe); } while (found == 0 && i--); dprintk("autosearch returns: %d\n",found); if (found == 0 || found == 1) return 0; // no channel found dib3000mc_get_frontend(fe, fep); } ret = dib3000mc_tune(fe); /* make this a config parameter */ dib3000mc_set_output_mode(state, OUTMODE_MPEG2_FIFO); return ret; } static int dib3000mc_read_status(struct dvb_frontend *fe, enum fe_status *stat) { struct dib3000mc_state *state = fe->demodulator_priv; u16 lock = dib3000mc_read_word(state, 509); *stat = 0; if (lock & 0x8000) *stat |= FE_HAS_SIGNAL; if (lock & 0x3000) *stat |= FE_HAS_CARRIER; if (lock & 0x0100) *stat |= FE_HAS_VITERBI; if (lock & 0x0010) *stat |= FE_HAS_SYNC; if (lock & 0x0008) *stat |= FE_HAS_LOCK; return 0; } static int dib3000mc_read_ber(struct dvb_frontend *fe, u32 *ber) { struct dib3000mc_state *state = fe->demodulator_priv; *ber = (dib3000mc_read_word(state, 500) << 16) | dib3000mc_read_word(state, 501); return 0; } static int dib3000mc_read_unc_blocks(struct dvb_frontend *fe, u32 *unc) { struct dib3000mc_state *state = fe->demodulator_priv; *unc = dib3000mc_read_word(state, 508); return 0; } static int dib3000mc_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { struct dib3000mc_state *state = fe->demodulator_priv; u16 val = dib3000mc_read_word(state, 392); *strength = 65535 - val; return 0; } static int dib3000mc_read_snr(struct dvb_frontend* fe, u16 *snr) { *snr = 0x0000; return 0; } static int dib3000mc_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) { tune->min_delay_ms = 1000; return 0; } static void dib3000mc_release(struct dvb_frontend *fe) { struct dib3000mc_state *state = fe->demodulator_priv; dibx000_exit_i2c_master(&state->i2c_master); kfree(state); } int dib3000mc_pid_control(struct dvb_frontend *fe, int index, int pid,int onoff) { struct dib3000mc_state *state = fe->demodulator_priv; dib3000mc_write_word(state, 212 + index, onoff ? (1 << 13) | pid : 0); return 0; } EXPORT_SYMBOL(dib3000mc_pid_control); int dib3000mc_pid_parse(struct dvb_frontend *fe, int onoff) { struct dib3000mc_state *state = fe->demodulator_priv; u16 tmp = dib3000mc_read_word(state, 206) & ~(1 << 4); tmp |= (onoff << 4); return dib3000mc_write_word(state, 206, tmp); } EXPORT_SYMBOL(dib3000mc_pid_parse); void dib3000mc_set_config(struct dvb_frontend *fe, struct dib3000mc_config *cfg) { struct dib3000mc_state *state = fe->demodulator_priv; state->cfg = cfg; } EXPORT_SYMBOL(dib3000mc_set_config); int dib3000mc_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib3000mc_config cfg[]) { struct dib3000mc_state *dmcst; int k; u8 new_addr; static const u8 DIB3000MC_I2C_ADDRESS[] = { 20, 22, 24, 26 }; dmcst = kzalloc(sizeof(struct dib3000mc_state), GFP_KERNEL); if (dmcst == NULL) return -ENOMEM; dmcst->i2c_adap = i2c; for (k = no_of_demods-1; k >= 0; k--) { dmcst->cfg = &cfg[k]; /* designated i2c address */ new_addr = DIB3000MC_I2C_ADDRESS[k]; dmcst->i2c_addr = new_addr; if (dib3000mc_identify(dmcst) != 0) { dmcst->i2c_addr = default_addr; if (dib3000mc_identify(dmcst) != 0) { dprintk("-E- DiB3000P/MC #%d: not identified\n", k); kfree(dmcst); return -ENODEV; } } dib3000mc_set_output_mode(dmcst, OUTMODE_MPEG2_PAR_CONT_CLK); // set new i2c address and force divstr (Bit 1) to value 0 (Bit 0) dib3000mc_write_word(dmcst, 1024, (new_addr << 3) | 0x1); dmcst->i2c_addr = new_addr; } for (k = 0; k < no_of_demods; k++) { dmcst->cfg = &cfg[k]; dmcst->i2c_addr = DIB3000MC_I2C_ADDRESS[k]; dib3000mc_write_word(dmcst, 1024, dmcst->i2c_addr << 3); /* turn off data output */ dib3000mc_set_output_mode(dmcst, OUTMODE_HIGH_Z); } kfree(dmcst); return 0; } EXPORT_SYMBOL(dib3000mc_i2c_enumeration); static const struct dvb_frontend_ops dib3000mc_ops; struct dvb_frontend * dib3000mc_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib3000mc_config *cfg) { struct dvb_frontend *demod; struct dib3000mc_state *st; st = kzalloc(sizeof(struct dib3000mc_state), GFP_KERNEL); if (st == NULL) return NULL; st->cfg = cfg; st->i2c_adap = i2c_adap; st->i2c_addr = i2c_addr; demod = &st->demod; demod->demodulator_priv = st; memcpy(&st->demod.ops, &dib3000mc_ops, sizeof(struct dvb_frontend_ops)); if (dib3000mc_identify(st) != 0) goto error; dibx000_init_i2c_master(&st->i2c_master, DIB3000MC, st->i2c_adap, st->i2c_addr); dib3000mc_write_word(st, 1037, 0x3130); return demod; error: kfree(st); return NULL; } EXPORT_SYMBOL_GPL(dib3000mc_attach); static const struct dvb_frontend_ops dib3000mc_ops = { .delsys = { SYS_DVBT }, .info = { .name = "DiBcom 3000MC/P", .frequency_min_hz = 44250 * kHz, .frequency_max_hz = 867250 * kHz, .frequency_stepsize_hz = 62500, .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_RECOVER | FE_CAN_HIERARCHY_AUTO, }, .release = dib3000mc_release, .init = dib3000mc_init, .sleep = dib3000mc_sleep, .set_frontend = dib3000mc_set_frontend, .get_tune_settings = dib3000mc_fe_get_tune_settings, .get_frontend = dib3000mc_get_frontend, .read_status = dib3000mc_read_status, .read_ber = dib3000mc_read_ber, .read_signal_strength = dib3000mc_read_signal_strength, .read_snr = dib3000mc_read_snr, .read_ucblocks = dib3000mc_read_unc_blocks, }; MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); MODULE_DESCRIPTION("Driver for the DiBcom 3000MC/P COFDM demodulator"); MODULE_LICENSE("GPL"); |
| 5 5 1 5 5 2 5 5 22 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 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<Larry.Finger@lwfinger.net>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Realtek 8192C/8188C 802.11n USB wireless"); MODULE_FIRMWARE("rtlwifi/rtl8192cufw.bin"); MODULE_FIRMWARE("rtlwifi/rtl8192cufw_A.bin"); MODULE_FIRMWARE("rtlwifi/rtl8192cufw_B.bin"); MODULE_FIRMWARE("rtlwifi/rtl8192cufw_TMSC.bin"); static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); int err; char *fw_name; rtlpriv->dm.dm_initialgain_enable = true; rtlpriv->dm.dm_flag = 0; rtlpriv->dm.disable_framebursting = false; rtlpriv->dm.thermalvalue = 0; /* for firmware buf */ rtlpriv->rtlhal.pfirmware = kmalloc(0x4000, GFP_KERNEL); if (!rtlpriv->rtlhal.pfirmware) { pr_err("Can't alloc buffer for fw\n"); return 1; } if (IS_VENDOR_UMC_A_CUT(rtlpriv->rtlhal.version) && !IS_92C_SERIAL(rtlpriv->rtlhal.version)) { fw_name = "rtlwifi/rtl8192cufw_A.bin"; } else if (IS_81XXC_VENDOR_UMC_B_CUT(rtlpriv->rtlhal.version)) { fw_name = "rtlwifi/rtl8192cufw_B.bin"; } else { fw_name = "rtlwifi/rtl8192cufw_TMSC.bin"; } pr_info("Loading firmware %s\n", fw_name); rtlpriv->max_fw_size = 0x4000; err = request_firmware_nowait(THIS_MODULE, 1, fw_name, rtlpriv->io.dev, GFP_KERNEL, hw, rtl_fw_cb); if (err) { kfree(rtlpriv->rtlhal.pfirmware); rtlpriv->rtlhal.pfirmware = NULL; } return err; } static void rtl92cu_deinit_sw_vars(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); if (rtlpriv->rtlhal.pfirmware) { kfree(rtlpriv->rtlhal.pfirmware); rtlpriv->rtlhal.pfirmware = NULL; } } /* get bt coexist status */ static bool rtl92cu_get_btc_status(void) { return false; } static const struct rtl_hal_ops rtl8192cu_hal_ops = { .init_sw_vars = rtl92cu_init_sw_vars, .deinit_sw_vars = rtl92cu_deinit_sw_vars, .read_chip_version = rtl92c_read_chip_version, .read_eeprom_info = rtl92cu_read_eeprom_info, .enable_interrupt = rtl92c_enable_interrupt, .disable_interrupt = rtl92c_disable_interrupt, .hw_init = rtl92cu_hw_init, .hw_disable = rtl92cu_card_disable, .set_network_type = rtl92cu_set_network_type, .set_chk_bssid = rtl92cu_set_check_bssid, .set_qos = rtl92c_set_qos, .set_bcn_reg = rtl92cu_set_beacon_related_registers, .set_bcn_intv = rtl92cu_set_beacon_interval, .update_interrupt_mask = rtl92cu_update_interrupt_mask, .get_hw_reg = rtl92cu_get_hw_reg, .set_hw_reg = rtl92cu_set_hw_reg, .update_rate_tbl = rtl92cu_update_hal_rate_tbl, .fill_tx_desc = rtl92cu_tx_fill_desc, .fill_tx_cmddesc = rtl92cu_tx_fill_cmddesc, .query_rx_desc = rtl92cu_rx_query_desc, .set_channel_access = rtl92cu_update_channel_access_setting, .radio_onoff_checking = rtl92cu_gpio_radio_on_off_checking, .set_bw_mode = rtl92c_phy_set_bw_mode, .switch_channel = rtl92c_phy_sw_chnl, .dm_watchdog = rtl92c_dm_watchdog, .scan_operation_backup = rtl_phy_scan_operation_backup, .set_rf_power_state = rtl92cu_phy_set_rf_power_state, .led_control = rtl92cu_led_control, .enable_hw_sec = rtl92cu_enable_hw_security_config, .set_key = rtl92c_set_key, .get_bbreg = rtl92c_phy_query_bb_reg, .set_bbreg = rtl92c_phy_set_bb_reg, .get_rfreg = rtl92cu_phy_query_rf_reg, .set_rfreg = rtl92cu_phy_set_rf_reg, .phy_rf6052_config = rtl92cu_phy_rf6052_config, .phy_rf6052_set_cck_txpower = rtl92cu_phy_rf6052_set_cck_txpower, .phy_rf6052_set_ofdm_txpower = rtl92cu_phy_rf6052_set_ofdm_txpower, .config_bb_with_headerfile = _rtl92cu_phy_config_bb_with_headerfile, .config_bb_with_pgheaderfile = _rtl92cu_phy_config_bb_with_pgheaderfile, .phy_lc_calibrate = _rtl92cu_phy_lc_calibrate, .phy_set_bw_mode_callback = rtl92cu_phy_set_bw_mode_callback, .dm_dynamic_txpower = rtl92cu_dm_dynamic_txpower, .fill_h2c_cmd = rtl92c_fill_h2c_cmd, .get_btc_status = rtl92cu_get_btc_status, }; static struct rtl_mod_params rtl92cu_mod_params = { .sw_crypto = 0, .debug_level = 0, .debug_mask = 0, }; module_param_named(swenc, rtl92cu_mod_params.sw_crypto, bool, 0444); module_param_named(debug_level, rtl92cu_mod_params.debug_level, int, 0644); module_param_named(debug_mask, rtl92cu_mod_params.debug_mask, ullong, 0644); MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n"); MODULE_PARM_DESC(debug_level, "Set debug level (0-5) (default 0)"); MODULE_PARM_DESC(debug_mask, "Set debug mask (default 0)"); static struct rtl_hal_usbint_cfg rtl92cu_interface_cfg = { /* rx */ .rx_urb_num = RTL92C_NUM_RX_URBS, .rx_max_size = RTL92C_SIZE_MAX_RX_BUFFER, .usb_rx_hdl = rtl8192cu_rx_hdl, .usb_rx_segregate_hdl = NULL, /* tx */ .usb_tx_cleanup = rtl8192c_tx_cleanup, .usb_tx_post_hdl = rtl8192c_tx_post_hdl, .usb_tx_aggregate_hdl = rtl8192c_tx_aggregate_hdl, /* endpoint mapping */ .usb_endpoint_mapping = rtl8192cu_endpoint_mapping, .usb_mq_to_hwq = rtl8192cu_mq_to_hwq, }; static const struct rtl_hal_cfg rtl92cu_hal_cfg = { .name = "rtl92c_usb", .alt_fw_name = "rtlwifi/rtl8192cufw.bin", .ops = &rtl8192cu_hal_ops, .mod_params = &rtl92cu_mod_params, .usb_interface_cfg = &rtl92cu_interface_cfg, .maps[SYS_ISO_CTRL] = REG_SYS_ISO_CTRL, .maps[SYS_FUNC_EN] = REG_SYS_FUNC_EN, .maps[SYS_CLK] = REG_SYS_CLKR, .maps[MAC_RCR_AM] = AM, .maps[MAC_RCR_AB] = AB, .maps[MAC_RCR_ACRC32] = ACRC32, .maps[MAC_RCR_ACF] = ACF, .maps[MAC_RCR_AAP] = AAP, .maps[EFUSE_TEST] = REG_EFUSE_TEST, .maps[EFUSE_CTRL] = REG_EFUSE_CTRL, .maps[EFUSE_CLK] = 0, .maps[EFUSE_CLK_CTRL] = REG_EFUSE_CTRL, .maps[EFUSE_PWC_EV12V] = PWC_EV12V, .maps[EFUSE_FEN_ELDR] = FEN_ELDR, .maps[EFUSE_LOADER_CLK_EN] = LOADER_CLK_EN, .maps[EFUSE_ANA8M] = EFUSE_ANA8M, .maps[EFUSE_HWSET_MAX_SIZE] = HWSET_MAX_SIZE, .maps[EFUSE_MAX_SECTION_MAP] = EFUSE_MAX_SECTION, .maps[EFUSE_REAL_CONTENT_SIZE] = EFUSE_REAL_CONTENT_LEN, .maps[RWCAM] = REG_CAMCMD, .maps[WCAMI] = REG_CAMWRITE, .maps[RCAMO] = REG_CAMREAD, .maps[CAMDBG] = REG_CAMDBG, .maps[SECR] = REG_SECCFG, .maps[SEC_CAM_NONE] = CAM_NONE, .maps[SEC_CAM_WEP40] = CAM_WEP40, .maps[SEC_CAM_TKIP] = CAM_TKIP, .maps[SEC_CAM_AES] = CAM_AES, .maps[SEC_CAM_WEP104] = CAM_WEP104, .maps[RTL_IMR_BCNDMAINT6] = IMR_BCNDMAINT6, .maps[RTL_IMR_BCNDMAINT5] = IMR_BCNDMAINT5, .maps[RTL_IMR_BCNDMAINT4] = IMR_BCNDMAINT4, .maps[RTL_IMR_BCNDMAINT3] = IMR_BCNDMAINT3, .maps[RTL_IMR_BCNDMAINT2] = IMR_BCNDMAINT2, .maps[RTL_IMR_BCNDMAINT1] = IMR_BCNDMAINT1, .maps[RTL_IMR_BCNDOK8] = IMR_BCNDOK8, .maps[RTL_IMR_BCNDOK7] = IMR_BCNDOK7, .maps[RTL_IMR_BCNDOK6] = IMR_BCNDOK6, .maps[RTL_IMR_BCNDOK5] = IMR_BCNDOK5, .maps[RTL_IMR_BCNDOK4] = IMR_BCNDOK4, .maps[RTL_IMR_BCNDOK3] = IMR_BCNDOK3, .maps[RTL_IMR_BCNDOK2] = IMR_BCNDOK2, .maps[RTL_IMR_BCNDOK1] = IMR_BCNDOK1, .maps[RTL_IMR_TIMEOUT2] = IMR_TIMEOUT2, .maps[RTL_IMR_TIMEOUT1] = IMR_TIMEOUT1, .maps[RTL_IMR_TXFOVW] = IMR_TXFOVW, .maps[RTL_IMR_PSTIMEOUT] = IMR_PSTIMEOUT, .maps[RTL_IMR_BCNINT] = IMR_BCNINT, .maps[RTL_IMR_RXFOVW] = IMR_RXFOVW, .maps[RTL_IMR_RDU] = IMR_RDU, .maps[RTL_IMR_ATIMEND] = IMR_ATIMEND, .maps[RTL_IMR_BDOK] = IMR_BDOK, .maps[RTL_IMR_MGNTDOK] = IMR_MGNTDOK, .maps[RTL_IMR_TBDER] = IMR_TBDER, .maps[RTL_IMR_HIGHDOK] = IMR_HIGHDOK, .maps[RTL_IMR_TBDOK] = IMR_TBDOK, .maps[RTL_IMR_BKDOK] = IMR_BKDOK, .maps[RTL_IMR_BEDOK] = IMR_BEDOK, .maps[RTL_IMR_VIDOK] = IMR_VIDOK, .maps[RTL_IMR_VODOK] = IMR_VODOK, .maps[RTL_IMR_ROK] = IMR_ROK, .maps[RTL_IBSS_INT_MASKS] = (IMR_BCNINT | IMR_TBDOK | IMR_TBDER), .maps[RTL_RC_CCK_RATE1M] = DESC_RATE1M, .maps[RTL_RC_CCK_RATE2M] = DESC_RATE2M, .maps[RTL_RC_CCK_RATE5_5M] = DESC_RATE5_5M, .maps[RTL_RC_CCK_RATE11M] = DESC_RATE11M, .maps[RTL_RC_OFDM_RATE6M] = DESC_RATE6M, .maps[RTL_RC_OFDM_RATE9M] = DESC_RATE9M, .maps[RTL_RC_OFDM_RATE12M] = DESC_RATE12M, .maps[RTL_RC_OFDM_RATE18M] = DESC_RATE18M, .maps[RTL_RC_OFDM_RATE24M] = DESC_RATE24M, .maps[RTL_RC_OFDM_RATE36M] = DESC_RATE36M, .maps[RTL_RC_OFDM_RATE48M] = DESC_RATE48M, .maps[RTL_RC_OFDM_RATE54M] = DESC_RATE54M, .maps[RTL_RC_HT_RATEMCS7] = DESC_RATEMCS7, .maps[RTL_RC_HT_RATEMCS15] = DESC_RATEMCS15, }; #define USB_VENDOR_ID_REALTEK 0x0bda /* 2010-10-19 DID_USB_V3.4 */ static const struct usb_device_id rtl8192c_usb_ids[] = { /*=== Realtek demoboard ===*/ /* Default ID */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x8191, rtl92cu_hal_cfg)}, /****** 8188CU ********/ /* RTL8188CTV */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x018a, rtl92cu_hal_cfg)}, /* 8188CE-VAU USB minCard */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x8170, rtl92cu_hal_cfg)}, /* 8188cu 1*1 dongle */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x8176, rtl92cu_hal_cfg)}, /* 8188cu 1*1 dongle, (b/g mode only) */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x8177, rtl92cu_hal_cfg)}, /* 8188cu Slim Solo */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x817a, rtl92cu_hal_cfg)}, /* 8188cu Slim Combo */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x817b, rtl92cu_hal_cfg)}, /* 8188RU High-power USB Dongle */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x817d, rtl92cu_hal_cfg)}, /* 8188CE-VAU USB minCard (b/g mode only) */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x817e, rtl92cu_hal_cfg)}, /* 8188RU in Alfa AWUS036NHR */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x817f, rtl92cu_hal_cfg)}, /* RTL8188CUS-VL */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x818a, rtl92cu_hal_cfg)}, {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x819a, rtl92cu_hal_cfg)}, /* 8188 Combo for BC4 */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x8754, rtl92cu_hal_cfg)}, /****** 8192CU ********/ /* 8192cu 2*2 */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x8178, rtl92cu_hal_cfg)}, /* 8192CE-VAU USB minCard */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x817c, rtl92cu_hal_cfg)}, /*=== Customer ID ===*/ /****** 8188CU ********/ {RTL_USB_DEVICE(0x050d, 0x1102, rtl92cu_hal_cfg)}, /*Belkin - Edimax*/ {RTL_USB_DEVICE(0x050d, 0x11f2, rtl92cu_hal_cfg)}, /*Belkin - ISY*/ {RTL_USB_DEVICE(0x06f8, 0xe033, rtl92cu_hal_cfg)}, /*Hercules - Edimax*/ {RTL_USB_DEVICE(0x07b8, 0x8189, rtl92cu_hal_cfg)}, /*Funai - Abocom*/ {RTL_USB_DEVICE(0x0846, 0x9041, rtl92cu_hal_cfg)}, /*NetGear WNA1000M*/ {RTL_USB_DEVICE(0x0846, 0x9043, rtl92cu_hal_cfg)}, /*NG WNA1000Mv2*/ {RTL_USB_DEVICE(0x0b05, 0x17ba, rtl92cu_hal_cfg)}, /*ASUS-Edimax*/ {RTL_USB_DEVICE(0x0bda, 0x5088, rtl92cu_hal_cfg)}, /*Thinkware-CC&C*/ {RTL_USB_DEVICE(0x0df6, 0x0052, rtl92cu_hal_cfg)}, /*Sitecom - Edimax*/ {RTL_USB_DEVICE(0x0df6, 0x005c, rtl92cu_hal_cfg)}, /*Sitecom - Edimax*/ {RTL_USB_DEVICE(0x0df6, 0x0070, rtl92cu_hal_cfg)}, /*Sitecom - 150N */ {RTL_USB_DEVICE(0x0df6, 0x0077, rtl92cu_hal_cfg)}, /*Sitecom-WLA2100V2*/ {RTL_USB_DEVICE(0x0eb0, 0x9071, rtl92cu_hal_cfg)}, /*NO Brand - Etop*/ {RTL_USB_DEVICE(0x4856, 0x0091, rtl92cu_hal_cfg)}, /*NetweeN - Feixun*/ /* HP - Lite-On ,8188CUS Slim Combo */ {RTL_USB_DEVICE(0x103c, 0x1629, rtl92cu_hal_cfg)}, {RTL_USB_DEVICE(0x13d3, 0x3357, rtl92cu_hal_cfg)}, /* AzureWave */ {RTL_USB_DEVICE(0x2001, 0x3308, rtl92cu_hal_cfg)}, /*D-Link - Alpha*/ {RTL_USB_DEVICE(0x2019, 0x4902, rtl92cu_hal_cfg)}, /*Planex - Etop*/ {RTL_USB_DEVICE(0x2019, 0xab2a, rtl92cu_hal_cfg)}, /*Planex - Abocom*/ /*SW-WF02-AD15 -Abocom*/ {RTL_USB_DEVICE(0x2019, 0xab2e, rtl92cu_hal_cfg)}, {RTL_USB_DEVICE(0x2019, 0xed17, rtl92cu_hal_cfg)}, /*PCI - Edimax*/ {RTL_USB_DEVICE(0x20f4, 0x648b, rtl92cu_hal_cfg)}, /*TRENDnet - Cameo*/ {RTL_USB_DEVICE(0x7392, 0x7811, rtl92cu_hal_cfg)}, /*Edimax - Edimax*/ {RTL_USB_DEVICE(0x13d3, 0x3358, rtl92cu_hal_cfg)}, /*Azwave 8188CE-VAU*/ /* Russian customer -Azwave (8188CE-VAU b/g mode only) */ {RTL_USB_DEVICE(0x13d3, 0x3359, rtl92cu_hal_cfg)}, {RTL_USB_DEVICE(0x4855, 0x0090, rtl92cu_hal_cfg)}, /* Feixun */ {RTL_USB_DEVICE(0x4855, 0x0091, rtl92cu_hal_cfg)}, /* NetweeN-Feixun */ {RTL_USB_DEVICE(0x9846, 0x9041, rtl92cu_hal_cfg)}, /* Netgear Cameo */ /****** 8188 RU ********/ /* Netcore */ {RTL_USB_DEVICE(USB_VENDOR_ID_REALTEK, 0x317f, rtl92cu_hal_cfg)}, /****** 8188CUS Slim Solo********/ {RTL_USB_DEVICE(0x04f2, 0xaff7, rtl92cu_hal_cfg)}, /*Xavi*/ {RTL_USB_DEVICE(0x04f2, 0xaff9, rtl92cu_hal_cfg)}, /*Xavi*/ {RTL_USB_DEVICE(0x04f2, 0xaffa, rtl92cu_hal_cfg)}, /*Xavi*/ {RTL_USB_DEVICE(0x0846, 0x9042, rtl92cu_hal_cfg)}, /*On Netwrks N150MA*/ /****** 8188CUS Slim Combo ********/ {RTL_USB_DEVICE(0x04f2, 0xaff8, rtl92cu_hal_cfg)}, /*Xavi*/ {RTL_USB_DEVICE(0x04f2, 0xaffb, rtl92cu_hal_cfg)}, /*Xavi*/ {RTL_USB_DEVICE(0x04f2, 0xaffc, rtl92cu_hal_cfg)}, /*Xavi*/ {RTL_USB_DEVICE(0x2019, 0x1201, rtl92cu_hal_cfg)}, /*Planex-Vencer*/ /****** 8192CU ********/ {RTL_USB_DEVICE(0x050d, 0x1004, rtl92cu_hal_cfg)}, /*Belcom-SurfN300*/ {RTL_USB_DEVICE(0x050d, 0x2102, rtl92cu_hal_cfg)}, /*Belcom-Sercomm*/ {RTL_USB_DEVICE(0x050d, 0x2103, rtl92cu_hal_cfg)}, /*Belcom-Edimax*/ {RTL_USB_DEVICE(0x0586, 0x341f, rtl92cu_hal_cfg)}, /*Zyxel -Abocom*/ {RTL_USB_DEVICE(0x07aa, 0x0056, rtl92cu_hal_cfg)}, /*ATKK-Gemtek*/ {RTL_USB_DEVICE(0x07b8, 0x8178, rtl92cu_hal_cfg)}, /*Funai -Abocom*/ {RTL_USB_DEVICE(0x0846, 0x9021, rtl92cu_hal_cfg)}, /*Netgear-Sercomm*/ {RTL_USB_DEVICE(0x0846, 0xf001, rtl92cu_hal_cfg)}, /*On Netwrks N300MA*/ {RTL_USB_DEVICE(0x0b05, 0x17ab, rtl92cu_hal_cfg)}, /*ASUS-Edimax*/ {RTL_USB_DEVICE(0x0bda, 0x8186, rtl92cu_hal_cfg)}, /*Realtek 92CE-VAU*/ {RTL_USB_DEVICE(0x0df6, 0x0061, rtl92cu_hal_cfg)}, /*Sitecom-Edimax*/ {RTL_USB_DEVICE(0x0e66, 0x0019, rtl92cu_hal_cfg)}, /*Hawking-Edimax*/ {RTL_USB_DEVICE(0x2001, 0x3307, rtl92cu_hal_cfg)}, /*D-Link-Cameo*/ {RTL_USB_DEVICE(0x2001, 0x3309, rtl92cu_hal_cfg)}, /*D-Link-Alpha*/ {RTL_USB_DEVICE(0x2001, 0x330a, rtl92cu_hal_cfg)}, /*D-Link-Alpha*/ {RTL_USB_DEVICE(0x2001, 0x330d, rtl92cu_hal_cfg)}, /*D-Link DWA-131 */ {RTL_USB_DEVICE(0x2019, 0xab2b, rtl92cu_hal_cfg)}, /*Planex -Abocom*/ {RTL_USB_DEVICE(0x20f4, 0x624d, rtl92cu_hal_cfg)}, /*TRENDNet*/ {RTL_USB_DEVICE(0x2357, 0x0100, rtl92cu_hal_cfg)}, /*TP-Link WN8200ND*/ {RTL_USB_DEVICE(0x7392, 0x7822, rtl92cu_hal_cfg)}, /*Edimax -Edimax*/ {} }; MODULE_DEVICE_TABLE(usb, rtl8192c_usb_ids); static int rtl8192cu_probe(struct usb_interface *intf, const struct usb_device_id *id) { return rtl_usb_probe(intf, id, &rtl92cu_hal_cfg); } static struct usb_driver rtl8192cu_driver = { .name = "rtl8192cu", .probe = rtl8192cu_probe, .disconnect = rtl_usb_disconnect, .id_table = rtl8192c_usb_ids, #ifdef CONFIG_PM /* .suspend = rtl_usb_suspend, */ /* .resume = rtl_usb_resume, */ /* .reset_resume = rtl8192c_resume, */ #endif /* CONFIG_PM */ .disable_hub_initiated_lpm = 1, }; module_usb_driver(rtl8192cu_driver); |
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2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 | // SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause) /* * Copyright (c) 2003, 2004 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. * * Copyright (c) 2005-2007 Matthieu Castet <castet.matthieu@free.fr> * Copyright (c) 2005-2007 Stanislaw Gruszka <stf_xl@wp.pl> * * HISTORY : some part of the code was base on ueagle 1.3 BSD driver, * Damien Bergamini agree to put his code under a DUAL GPL/BSD license. * * The rest of the code was rewritten from scratch. */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/crc32.h> #include <linux/usb.h> #include <linux/firmware.h> #include <linux/ctype.h> #include <linux/sched.h> #include <linux/kthread.h> #include <linux/mutex.h> #include <linux/freezer.h> #include <linux/slab.h> #include <linux/kernel.h> #include <linux/unaligned.h> #include "usbatm.h" #define EAGLEUSBVERSION "ueagle 1.4" /* * Debug macros */ #define uea_dbg(usb_dev, format, args...) \ do { \ if (debug >= 1) \ dev_dbg(&(usb_dev)->dev, \ "[ueagle-atm dbg] %s: " format, \ __func__, ##args); \ } while (0) #define uea_vdbg(usb_dev, format, args...) \ do { \ if (debug >= 2) \ dev_dbg(&(usb_dev)->dev, \ "[ueagle-atm vdbg] " format, ##args); \ } while (0) #define uea_enters(usb_dev) \ uea_vdbg(usb_dev, "entering %s\n" , __func__) #define uea_leaves(usb_dev) \ uea_vdbg(usb_dev, "leaving %s\n" , __func__) #define uea_err(usb_dev, format, args...) \ dev_err(&(usb_dev)->dev , "[UEAGLE-ATM] " format , ##args) #define uea_warn(usb_dev, format, args...) \ dev_warn(&(usb_dev)->dev , "[Ueagle-atm] " format, ##args) #define uea_info(usb_dev, format, args...) \ dev_info(&(usb_dev)->dev , "[ueagle-atm] " format, ##args) struct intr_pkt; /* cmv's from firmware */ struct uea_cmvs_v1 { u32 address; u16 offset; u32 data; } __packed; struct uea_cmvs_v2 { u32 group; u32 address; u32 offset; u32 data; } __packed; /* information about currently processed cmv */ struct cmv_dsc_e1 { u8 function; u16 idx; u32 address; u16 offset; }; struct cmv_dsc_e4 { u16 function; u16 offset; u16 address; u16 group; }; union cmv_dsc { struct cmv_dsc_e1 e1; struct cmv_dsc_e4 e4; }; struct uea_softc { struct usb_device *usb_dev; struct usbatm_data *usbatm; int modem_index; unsigned int driver_info; int annex; #define ANNEXA 0 #define ANNEXB 1 int booting; int reset; wait_queue_head_t sync_q; struct task_struct *kthread; u32 data; u32 data1; int cmv_ack; union cmv_dsc cmv_dsc; struct work_struct task; u16 pageno; u16 ovl; const struct firmware *dsp_firm; struct urb *urb_int; void (*dispatch_cmv)(struct uea_softc *, struct intr_pkt *); void (*schedule_load_page)(struct uea_softc *, struct intr_pkt *); int (*stat)(struct uea_softc *); int (*send_cmvs)(struct uea_softc *); /* keep in sync with eaglectl */ struct uea_stats { struct { u32 state; u32 flags; u32 mflags; u32 vidcpe; u32 vidco; u32 dsrate; u32 usrate; u32 dsunc; u32 usunc; u32 dscorr; u32 uscorr; u32 txflow; u32 rxflow; u32 usattenuation; u32 dsattenuation; u32 dsmargin; u32 usmargin; u32 firmid; } phy; } stats; }; /* * Elsa IDs */ #define ELSA_VID 0x05CC #define ELSA_PID_PSTFIRM 0x3350 #define ELSA_PID_PREFIRM 0x3351 #define ELSA_PID_A_PREFIRM 0x3352 #define ELSA_PID_A_PSTFIRM 0x3353 #define ELSA_PID_B_PREFIRM 0x3362 #define ELSA_PID_B_PSTFIRM 0x3363 /* * Devolo IDs : pots if (pid & 0x10) */ #define DEVOLO_VID 0x1039 #define DEVOLO_EAGLE_I_A_PID_PSTFIRM 0x2110 #define DEVOLO_EAGLE_I_A_PID_PREFIRM 0x2111 #define DEVOLO_EAGLE_I_B_PID_PSTFIRM 0x2100 #define DEVOLO_EAGLE_I_B_PID_PREFIRM 0x2101 #define DEVOLO_EAGLE_II_A_PID_PSTFIRM 0x2130 #define DEVOLO_EAGLE_II_A_PID_PREFIRM 0x2131 #define DEVOLO_EAGLE_II_B_PID_PSTFIRM 0x2120 #define DEVOLO_EAGLE_II_B_PID_PREFIRM 0x2121 /* * Reference design USB IDs */ #define ANALOG_VID 0x1110 #define ADI930_PID_PREFIRM 0x9001 #define ADI930_PID_PSTFIRM 0x9000 #define EAGLE_I_PID_PREFIRM 0x9010 /* Eagle I */ #define EAGLE_I_PID_PSTFIRM 0x900F /* Eagle I */ #define EAGLE_IIC_PID_PREFIRM 0x9024 /* Eagle IIC */ #define EAGLE_IIC_PID_PSTFIRM 0x9023 /* Eagle IIC */ #define EAGLE_II_PID_PREFIRM 0x9022 /* Eagle II */ #define EAGLE_II_PID_PSTFIRM 0x9021 /* Eagle II */ #define EAGLE_III_PID_PREFIRM 0x9032 /* Eagle III */ #define EAGLE_III_PID_PSTFIRM 0x9031 /* Eagle III */ #define EAGLE_IV_PID_PREFIRM 0x9042 /* Eagle IV */ #define EAGLE_IV_PID_PSTFIRM 0x9041 /* Eagle IV */ /* * USR USB IDs */ #define USR_VID 0x0BAF #define MILLER_A_PID_PREFIRM 0x00F2 #define MILLER_A_PID_PSTFIRM 0x00F1 #define MILLER_B_PID_PREFIRM 0x00FA #define MILLER_B_PID_PSTFIRM 0x00F9 #define HEINEKEN_A_PID_PREFIRM 0x00F6 #define HEINEKEN_A_PID_PSTFIRM 0x00F5 #define HEINEKEN_B_PID_PREFIRM 0x00F8 #define HEINEKEN_B_PID_PSTFIRM 0x00F7 #define PREFIRM 0 #define PSTFIRM (1<<7) #define AUTO_ANNEX_A (1<<8) #define AUTO_ANNEX_B (1<<9) enum { ADI930 = 0, EAGLE_I, EAGLE_II, EAGLE_III, EAGLE_IV }; /* macros for both struct usb_device_id and struct uea_softc */ #define UEA_IS_PREFIRM(x) \ (!((x)->driver_info & PSTFIRM)) #define UEA_CHIP_VERSION(x) \ ((x)->driver_info & 0xf) #define IS_ISDN(x) \ ((x)->annex & ANNEXB) #define INS_TO_USBDEV(ins) (ins->usb_dev) #define GET_STATUS(data) \ ((data >> 8) & 0xf) #define IS_OPERATIONAL(sc) \ ((UEA_CHIP_VERSION(sc) != EAGLE_IV) ? \ (GET_STATUS(sc->stats.phy.state) == 2) : \ (sc->stats.phy.state == 7)) /* * Set of macros to handle unaligned data in the firmware blob. * The FW_GET_BYTE() macro is provided only for consistency. */ #define FW_GET_BYTE(p) (*((__u8 *) (p))) #define FW_DIR "ueagle-atm/" #define EAGLE_FIRMWARE FW_DIR "eagle.fw" #define ADI930_FIRMWARE FW_DIR "adi930.fw" #define EAGLE_I_FIRMWARE FW_DIR "eagleI.fw" #define EAGLE_II_FIRMWARE FW_DIR "eagleII.fw" #define EAGLE_III_FIRMWARE FW_DIR "eagleIII.fw" #define EAGLE_IV_FIRMWARE FW_DIR "eagleIV.fw" #define DSP4I_FIRMWARE FW_DIR "DSP4i.bin" #define DSP4P_FIRMWARE FW_DIR "DSP4p.bin" #define DSP9I_FIRMWARE FW_DIR "DSP9i.bin" #define DSP9P_FIRMWARE FW_DIR "DSP9p.bin" #define DSPEI_FIRMWARE FW_DIR "DSPei.bin" #define DSPEP_FIRMWARE FW_DIR "DSPep.bin" #define FPGA930_FIRMWARE FW_DIR "930-fpga.bin" #define CMV4P_FIRMWARE FW_DIR "CMV4p.bin" #define CMV4PV2_FIRMWARE FW_DIR "CMV4p.bin.v2" #define CMV4I_FIRMWARE FW_DIR "CMV4i.bin" #define CMV4IV2_FIRMWARE FW_DIR "CMV4i.bin.v2" #define CMV9P_FIRMWARE FW_DIR "CMV9p.bin" #define CMV9PV2_FIRMWARE FW_DIR "CMV9p.bin.v2" #define CMV9I_FIRMWARE FW_DIR "CMV9i.bin" #define CMV9IV2_FIRMWARE FW_DIR "CMV9i.bin.v2" #define CMVEP_FIRMWARE FW_DIR "CMVep.bin" #define CMVEPV2_FIRMWARE FW_DIR "CMVep.bin.v2" #define CMVEI_FIRMWARE FW_DIR "CMVei.bin" #define CMVEIV2_FIRMWARE FW_DIR "CMVei.bin.v2" #define UEA_FW_NAME_MAX 30 #define NB_MODEM 4 #define BULK_TIMEOUT 300 #define CTRL_TIMEOUT 1000 #define ACK_TIMEOUT msecs_to_jiffies(3000) #define UEA_INTR_IFACE_NO 0 #define UEA_US_IFACE_NO 1 #define UEA_DS_IFACE_NO 2 #define FASTEST_ISO_INTF 8 #define UEA_BULK_DATA_PIPE 0x02 #define UEA_IDMA_PIPE 0x04 #define UEA_INTR_PIPE 0x04 #define UEA_ISO_DATA_PIPE 0x08 #define UEA_E1_SET_BLOCK 0x0001 #define UEA_E4_SET_BLOCK 0x002c #define UEA_SET_MODE 0x0003 #define UEA_SET_2183_DATA 0x0004 #define UEA_SET_TIMEOUT 0x0011 #define UEA_LOOPBACK_OFF 0x0002 #define UEA_LOOPBACK_ON 0x0003 #define UEA_BOOT_IDMA 0x0006 #define UEA_START_RESET 0x0007 #define UEA_END_RESET 0x0008 #define UEA_SWAP_MAILBOX (0x3fcd | 0x4000) #define UEA_MPTX_START (0x3fce | 0x4000) #define UEA_MPTX_MAILBOX (0x3fd6 | 0x4000) #define UEA_MPRX_MAILBOX (0x3fdf | 0x4000) /* block information in eagle4 dsp firmware */ struct block_index { __le32 PageOffset; __le32 NotLastBlock; __le32 dummy; __le32 PageSize; __le32 PageAddress; __le16 dummy1; __le16 PageNumber; } __packed; #define E4_IS_BOOT_PAGE(PageSize) ((le32_to_cpu(PageSize)) & 0x80000000) #define E4_PAGE_BYTES(PageSize) ((le32_to_cpu(PageSize) & 0x7fffffff) * 4) #define E4_L1_STRING_HEADER 0x10 #define E4_MAX_PAGE_NUMBER 0x58 #define E4_NO_SWAPPAGE_HEADERS 0x31 /* l1_code is eagle4 dsp firmware format */ struct l1_code { u8 string_header[E4_L1_STRING_HEADER]; u8 page_number_to_block_index[E4_MAX_PAGE_NUMBER]; struct block_index page_header[E4_NO_SWAPPAGE_HEADERS]; u8 code[]; } __packed; /* structures describing a block within a DSP page */ struct block_info_e1 { __le16 wHdr; __le16 wAddress; __le16 wSize; __le16 wOvlOffset; __le16 wOvl; /* overlay */ __le16 wLast; } __packed; #define E1_BLOCK_INFO_SIZE 12 struct block_info_e4 { __be16 wHdr; __u8 bBootPage; __u8 bPageNumber; __be32 dwSize; __be32 dwAddress; __be16 wReserved; } __packed; #define E4_BLOCK_INFO_SIZE 14 #define UEA_BIHDR 0xabcd #define UEA_RESERVED 0xffff /* constants describing cmv type */ #define E1_PREAMBLE 0x535c #define E1_MODEMTOHOST 0x01 #define E1_HOSTTOMODEM 0x10 #define E1_MEMACCESS 0x1 #define E1_ADSLDIRECTIVE 0x7 #define E1_FUNCTION_TYPE(f) ((f) >> 4) #define E1_FUNCTION_SUBTYPE(f) ((f) & 0x0f) #define E4_MEMACCESS 0 #define E4_ADSLDIRECTIVE 0xf #define E4_FUNCTION_TYPE(f) ((f) >> 8) #define E4_FUNCTION_SIZE(f) ((f) & 0x0f) #define E4_FUNCTION_SUBTYPE(f) (((f) >> 4) & 0x0f) /* for MEMACCESS */ #define E1_REQUESTREAD 0x0 #define E1_REQUESTWRITE 0x1 #define E1_REPLYREAD 0x2 #define E1_REPLYWRITE 0x3 #define E4_REQUESTREAD 0x0 #define E4_REQUESTWRITE 0x4 #define E4_REPLYREAD (E4_REQUESTREAD | 1) #define E4_REPLYWRITE (E4_REQUESTWRITE | 1) /* for ADSLDIRECTIVE */ #define E1_KERNELREADY 0x0 #define E1_MODEMREADY 0x1 #define E4_KERNELREADY 0x0 #define E4_MODEMREADY 0x1 #define E1_MAKEFUNCTION(t, s) (((t) & 0xf) << 4 | ((s) & 0xf)) #define E4_MAKEFUNCTION(t, st, s) (((t) & 0xf) << 8 | \ ((st) & 0xf) << 4 | ((s) & 0xf)) #define E1_MAKESA(a, b, c, d) \ (((c) & 0xff) << 24 | \ ((d) & 0xff) << 16 | \ ((a) & 0xff) << 8 | \ ((b) & 0xff)) #define E1_GETSA1(a) ((a >> 8) & 0xff) #define E1_GETSA2(a) (a & 0xff) #define E1_GETSA3(a) ((a >> 24) & 0xff) #define E1_GETSA4(a) ((a >> 16) & 0xff) #define E1_SA_CNTL E1_MAKESA('C', 'N', 'T', 'L') #define E1_SA_DIAG E1_MAKESA('D', 'I', 'A', 'G') #define E1_SA_INFO E1_MAKESA('I', 'N', 'F', 'O') #define E1_SA_OPTN E1_MAKESA('O', 'P', 'T', 'N') #define E1_SA_RATE E1_MAKESA('R', 'A', 'T', 'E') #define E1_SA_STAT E1_MAKESA('S', 'T', 'A', 'T') #define E4_SA_CNTL 1 #define E4_SA_STAT 2 #define E4_SA_INFO 3 #define E4_SA_TEST 4 #define E4_SA_OPTN 5 #define E4_SA_RATE 6 #define E4_SA_DIAG 7 #define E4_SA_CNFG 8 /* structures representing a CMV (Configuration and Management Variable) */ struct cmv_e1 { __le16 wPreamble; __u8 bDirection; __u8 bFunction; __le16 wIndex; __le32 dwSymbolicAddress; __le16 wOffsetAddress; __le32 dwData; } __packed; struct cmv_e4 { __be16 wGroup; __be16 wFunction; __be16 wOffset; __be16 wAddress; __be32 dwData[6]; } __packed; /* structures representing swap information */ struct swap_info_e1 { __u8 bSwapPageNo; __u8 bOvl; /* overlay */ } __packed; struct swap_info_e4 { __u8 bSwapPageNo; } __packed; /* structures representing interrupt data */ #define e1_bSwapPageNo u.e1.s1.swapinfo.bSwapPageNo #define e1_bOvl u.e1.s1.swapinfo.bOvl #define e4_bSwapPageNo u.e4.s1.swapinfo.bSwapPageNo #define INT_LOADSWAPPAGE 0x0001 #define INT_INCOMINGCMV 0x0002 union intr_data_e1 { struct { struct swap_info_e1 swapinfo; __le16 wDataSize; } __packed s1; struct { struct cmv_e1 cmv; __le16 wDataSize; } __packed s2; } __packed; union intr_data_e4 { struct { struct swap_info_e4 swapinfo; __le16 wDataSize; } __packed s1; struct { struct cmv_e4 cmv; __le16 wDataSize; } __packed s2; } __packed; struct intr_pkt { __u8 bType; __u8 bNotification; __le16 wValue; __le16 wIndex; __le16 wLength; __le16 wInterrupt; union { union intr_data_e1 e1; union intr_data_e4 e4; } u; } __packed; #define E1_INTR_PKT_SIZE 28 #define E4_INTR_PKT_SIZE 64 static struct usb_driver uea_driver; static DEFINE_MUTEX(uea_mutex); static const char * const chip_name[] = { "ADI930", "Eagle I", "Eagle II", "Eagle III", "Eagle IV"}; static int modem_index; static unsigned int debug; static unsigned int altsetting[NB_MODEM] = { [0 ... (NB_MODEM - 1)] = FASTEST_ISO_INTF}; static bool sync_wait[NB_MODEM]; static char *cmv_file[NB_MODEM]; static int annex[NB_MODEM]; module_param(debug, uint, 0644); MODULE_PARM_DESC(debug, "module debug level (0=off,1=on,2=verbose)"); module_param_array(altsetting, uint, NULL, 0644); MODULE_PARM_DESC(altsetting, "alternate setting for incoming traffic: 0=bulk, " "1=isoc slowest, ... , 8=isoc fastest (default)"); module_param_array(sync_wait, bool, NULL, 0644); MODULE_PARM_DESC(sync_wait, "wait the synchronisation before starting ATM"); module_param_array(cmv_file, charp, NULL, 0644); MODULE_PARM_DESC(cmv_file, "file name with configuration and management variables"); module_param_array(annex, uint, NULL, 0644); MODULE_PARM_DESC(annex, "manually set annex a/b (0=auto, 1=annex a, 2=annex b)"); #define uea_wait(sc, cond, timeo) \ ({ \ int _r = wait_event_freezable_timeout(sc->sync_q, \ (cond) || kthread_should_stop(), timeo); \ if (kthread_should_stop()) \ _r = -ENODEV; \ _r; \ }) #define UPDATE_ATM_STAT(type, val) \ do { \ if (sc->usbatm->atm_dev) \ sc->usbatm->atm_dev->type = val; \ } while (0) #define UPDATE_ATM_SIGNAL(val) \ do { \ if (sc->usbatm->atm_dev) \ atm_dev_signal_change(sc->usbatm->atm_dev, val); \ } while (0) /* Firmware loading */ #define LOAD_INTERNAL 0xA0 #define F8051_USBCS 0x7f92 /* * uea_send_modem_cmd - Send a command for pre-firmware devices. */ static int uea_send_modem_cmd(struct usb_device *usb, u16 addr, u16 size, const u8 *buff) { int ret = -ENOMEM; u8 *xfer_buff; xfer_buff = kmemdup(buff, size, GFP_KERNEL); if (xfer_buff) { ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0), LOAD_INTERNAL, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, addr, 0, xfer_buff, size, CTRL_TIMEOUT); kfree(xfer_buff); } if (ret < 0) return ret; return (ret == size) ? 0 : -EIO; } static void uea_upload_pre_firmware(const struct firmware *fw_entry, void *context) { struct usb_device *usb = context; const u8 *pfw; u8 value; u32 crc = 0; int ret, size; uea_enters(usb); if (!fw_entry) { uea_err(usb, "firmware is not available\n"); goto err; } pfw = fw_entry->data; size = fw_entry->size; if (size < 4) goto err_fw_corrupted; crc = get_unaligned_le32(pfw); pfw += 4; size -= 4; if (crc32_be(0, pfw, size) != crc) goto err_fw_corrupted; /* * Start to upload firmware : send reset */ value = 1; ret = uea_send_modem_cmd(usb, F8051_USBCS, sizeof(value), &value); if (ret < 0) { uea_err(usb, "modem reset failed with error %d\n", ret); goto err; } while (size > 3) { u8 len = FW_GET_BYTE(pfw); u16 add = get_unaligned_le16(pfw + 1); size -= len + 3; if (size < 0) goto err_fw_corrupted; ret = uea_send_modem_cmd(usb, add, len, pfw + 3); if (ret < 0) { uea_err(usb, "uploading firmware data failed " "with error %d\n", ret); goto err; } pfw += len + 3; } if (size != 0) goto err_fw_corrupted; /* * Tell the modem we finish : de-assert reset */ value = 0; ret = uea_send_modem_cmd(usb, F8051_USBCS, 1, &value); if (ret < 0) uea_err(usb, "modem de-assert failed with error %d\n", ret); else uea_info(usb, "firmware uploaded\n"); goto err; err_fw_corrupted: uea_err(usb, "firmware is corrupted\n"); err: release_firmware(fw_entry); uea_leaves(usb); } /* * uea_load_firmware - Load usb firmware for pre-firmware devices. */ static int uea_load_firmware(struct usb_device *usb, unsigned int ver) { int ret; char *fw_name = EAGLE_FIRMWARE; uea_enters(usb); uea_info(usb, "pre-firmware device, uploading firmware\n"); switch (ver) { case ADI930: fw_name = ADI930_FIRMWARE; break; case EAGLE_I: fw_name = EAGLE_I_FIRMWARE; break; case EAGLE_II: fw_name = EAGLE_II_FIRMWARE; break; case EAGLE_III: fw_name = EAGLE_III_FIRMWARE; break; case EAGLE_IV: fw_name = EAGLE_IV_FIRMWARE; break; } ret = request_firmware_nowait(THIS_MODULE, 1, fw_name, &usb->dev, GFP_KERNEL, usb, uea_upload_pre_firmware); if (ret) uea_err(usb, "firmware %s is not available\n", fw_name); else uea_info(usb, "loading firmware %s\n", fw_name); uea_leaves(usb); return ret; } /* modem management : dsp firmware, send/read CMV, monitoring statistic */ /* * Make sure that the DSP code provided is safe to use. */ static int check_dsp_e1(const u8 *dsp, unsigned int len) { u8 pagecount, blockcount; u16 blocksize; u32 pageoffset; unsigned int i, j, p, pp; pagecount = FW_GET_BYTE(dsp); p = 1; /* enough space for page offsets? */ if (p + 4 * pagecount > len) return 1; for (i = 0; i < pagecount; i++) { pageoffset = get_unaligned_le32(dsp + p); p += 4; if (pageoffset == 0) continue; /* enough space for blockcount? */ if (pageoffset >= len) return 1; pp = pageoffset; blockcount = FW_GET_BYTE(dsp + pp); pp += 1; for (j = 0; j < blockcount; j++) { /* enough space for block header? */ if (pp + 4 > len) return 1; pp += 2; /* skip blockaddr */ blocksize = get_unaligned_le16(dsp + pp); pp += 2; /* enough space for block data? */ if (pp + blocksize > len) return 1; pp += blocksize; } } return 0; } static int check_dsp_e4(const u8 *dsp, int len) { int i; struct l1_code *p = (struct l1_code *) dsp; unsigned int sum = p->code - dsp; if (len < sum) return 1; if (strcmp("STRATIPHY ANEXA", p->string_header) != 0 && strcmp("STRATIPHY ANEXB", p->string_header) != 0) return 1; for (i = 0; i < E4_MAX_PAGE_NUMBER; i++) { struct block_index *blockidx; u8 blockno = p->page_number_to_block_index[i]; if (blockno >= E4_NO_SWAPPAGE_HEADERS) continue; do { u64 l; if (blockno >= E4_NO_SWAPPAGE_HEADERS) return 1; blockidx = &p->page_header[blockno++]; if ((u8 *)(blockidx + 1) - dsp >= len) return 1; if (le16_to_cpu(blockidx->PageNumber) != i) return 1; l = E4_PAGE_BYTES(blockidx->PageSize); sum += l; l += le32_to_cpu(blockidx->PageOffset); if (l > len) return 1; /* zero is zero regardless endianness */ } while (blockidx->NotLastBlock); } return (sum == len) ? 0 : 1; } /* * send data to the idma pipe * */ static int uea_idma_write(struct uea_softc *sc, const void *data, u32 size) { int ret = -ENOMEM; u8 *xfer_buff; int bytes_read; xfer_buff = kmemdup(data, size, GFP_KERNEL); if (!xfer_buff) { uea_err(INS_TO_USBDEV(sc), "can't allocate xfer_buff\n"); return ret; } ret = usb_bulk_msg(sc->usb_dev, usb_sndbulkpipe(sc->usb_dev, UEA_IDMA_PIPE), xfer_buff, size, &bytes_read, BULK_TIMEOUT); kfree(xfer_buff); if (ret < 0) return ret; if (size != bytes_read) { uea_err(INS_TO_USBDEV(sc), "size != bytes_read %d %d\n", size, bytes_read); return -EIO; } return 0; } static int request_dsp(struct uea_softc *sc) { int ret; char *dsp_name; if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { if (IS_ISDN(sc)) dsp_name = DSP4I_FIRMWARE; else dsp_name = DSP4P_FIRMWARE; } else if (UEA_CHIP_VERSION(sc) == ADI930) { if (IS_ISDN(sc)) dsp_name = DSP9I_FIRMWARE; else dsp_name = DSP9P_FIRMWARE; } else { if (IS_ISDN(sc)) dsp_name = DSPEI_FIRMWARE; else dsp_name = DSPEP_FIRMWARE; } ret = request_firmware(&sc->dsp_firm, dsp_name, &sc->usb_dev->dev); if (ret < 0) { uea_err(INS_TO_USBDEV(sc), "requesting firmware %s failed with error %d\n", dsp_name, ret); return ret; } if (UEA_CHIP_VERSION(sc) == EAGLE_IV) ret = check_dsp_e4(sc->dsp_firm->data, sc->dsp_firm->size); else ret = check_dsp_e1(sc->dsp_firm->data, sc->dsp_firm->size); if (ret) { uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", dsp_name); release_firmware(sc->dsp_firm); sc->dsp_firm = NULL; return -EILSEQ; } return 0; } /* * The uea_load_page() function must be called within a process context */ static void uea_load_page_e1(struct work_struct *work) { struct uea_softc *sc = container_of(work, struct uea_softc, task); u16 pageno = sc->pageno; u16 ovl = sc->ovl; struct block_info_e1 bi; const u8 *p; u8 pagecount, blockcount; u16 blockaddr, blocksize; u32 pageoffset; int i; /* reload firmware when reboot start and it's loaded already */ if (ovl == 0 && pageno == 0) { release_firmware(sc->dsp_firm); sc->dsp_firm = NULL; } if (sc->dsp_firm == NULL && request_dsp(sc) < 0) return; p = sc->dsp_firm->data; pagecount = FW_GET_BYTE(p); p += 1; if (pageno >= pagecount) goto bad1; p += 4 * pageno; pageoffset = get_unaligned_le32(p); if (pageoffset == 0) goto bad1; p = sc->dsp_firm->data + pageoffset; blockcount = FW_GET_BYTE(p); p += 1; uea_dbg(INS_TO_USBDEV(sc), "sending %u blocks for DSP page %u\n", blockcount, pageno); bi.wHdr = cpu_to_le16(UEA_BIHDR); bi.wOvl = cpu_to_le16(ovl); bi.wOvlOffset = cpu_to_le16(ovl | 0x8000); for (i = 0; i < blockcount; i++) { blockaddr = get_unaligned_le16(p); p += 2; blocksize = get_unaligned_le16(p); p += 2; bi.wSize = cpu_to_le16(blocksize); bi.wAddress = cpu_to_le16(blockaddr); bi.wLast = cpu_to_le16((i == blockcount - 1) ? 1 : 0); /* send block info through the IDMA pipe */ if (uea_idma_write(sc, &bi, E1_BLOCK_INFO_SIZE)) goto bad2; /* send block data through the IDMA pipe */ if (uea_idma_write(sc, p, blocksize)) goto bad2; p += blocksize; } return; bad2: uea_err(INS_TO_USBDEV(sc), "sending DSP block %u failed\n", i); return; bad1: uea_err(INS_TO_USBDEV(sc), "invalid DSP page %u requested\n", pageno); } static void __uea_load_page_e4(struct uea_softc *sc, u8 pageno, int boot) { struct block_info_e4 bi; struct block_index *blockidx; struct l1_code *p = (struct l1_code *) sc->dsp_firm->data; u8 blockno = p->page_number_to_block_index[pageno]; bi.wHdr = cpu_to_be16(UEA_BIHDR); bi.bBootPage = boot; bi.bPageNumber = pageno; bi.wReserved = cpu_to_be16(UEA_RESERVED); do { const u8 *blockoffset; unsigned int blocksize; blockidx = &p->page_header[blockno]; blocksize = E4_PAGE_BYTES(blockidx->PageSize); blockoffset = sc->dsp_firm->data + le32_to_cpu( blockidx->PageOffset); bi.dwSize = cpu_to_be32(blocksize); bi.dwAddress = cpu_to_be32(le32_to_cpu(blockidx->PageAddress)); uea_dbg(INS_TO_USBDEV(sc), "sending block %u for DSP page " "%u size %u address %x\n", blockno, pageno, blocksize, le32_to_cpu(blockidx->PageAddress)); /* send block info through the IDMA pipe */ if (uea_idma_write(sc, &bi, E4_BLOCK_INFO_SIZE)) goto bad; /* send block data through the IDMA pipe */ if (uea_idma_write(sc, blockoffset, blocksize)) goto bad; blockno++; } while (blockidx->NotLastBlock); return; bad: uea_err(INS_TO_USBDEV(sc), "sending DSP block %u failed\n", blockno); return; } static void uea_load_page_e4(struct work_struct *work) { struct uea_softc *sc = container_of(work, struct uea_softc, task); u8 pageno = sc->pageno; int i; struct block_info_e4 bi; struct l1_code *p; uea_dbg(INS_TO_USBDEV(sc), "sending DSP page %u\n", pageno); /* reload firmware when reboot start and it's loaded already */ if (pageno == 0) { release_firmware(sc->dsp_firm); sc->dsp_firm = NULL; } if (sc->dsp_firm == NULL && request_dsp(sc) < 0) return; p = (struct l1_code *) sc->dsp_firm->data; if (pageno >= le16_to_cpu(p->page_header[0].PageNumber)) { uea_err(INS_TO_USBDEV(sc), "invalid DSP " "page %u requested\n", pageno); return; } if (pageno != 0) { __uea_load_page_e4(sc, pageno, 0); return; } uea_dbg(INS_TO_USBDEV(sc), "sending Main DSP page %u\n", p->page_header[0].PageNumber); for (i = 0; i < le16_to_cpu(p->page_header[0].PageNumber); i++) { if (E4_IS_BOOT_PAGE(p->page_header[i].PageSize)) __uea_load_page_e4(sc, i, 1); } uea_dbg(INS_TO_USBDEV(sc) , "sending start bi\n"); bi.wHdr = cpu_to_be16(UEA_BIHDR); bi.bBootPage = 0; bi.bPageNumber = 0xff; bi.wReserved = cpu_to_be16(UEA_RESERVED); bi.dwSize = cpu_to_be32(E4_PAGE_BYTES(p->page_header[0].PageSize)); bi.dwAddress = cpu_to_be32(le32_to_cpu(p->page_header[0].PageAddress)); /* send block info through the IDMA pipe */ if (uea_idma_write(sc, &bi, E4_BLOCK_INFO_SIZE)) uea_err(INS_TO_USBDEV(sc), "sending DSP start bi failed\n"); } static inline void wake_up_cmv_ack(struct uea_softc *sc) { BUG_ON(sc->cmv_ack); sc->cmv_ack = 1; wake_up(&sc->sync_q); } static inline int wait_cmv_ack(struct uea_softc *sc) { int ret = uea_wait(sc, sc->cmv_ack , ACK_TIMEOUT); sc->cmv_ack = 0; uea_dbg(INS_TO_USBDEV(sc), "wait_event_timeout : %d ms\n", jiffies_to_msecs(ret)); if (ret < 0) return ret; return (ret == 0) ? -ETIMEDOUT : 0; } #define UCDC_SEND_ENCAPSULATED_COMMAND 0x00 static int uea_request(struct uea_softc *sc, u16 value, u16 index, u16 size, const void *data) { u8 *xfer_buff; int ret = -ENOMEM; xfer_buff = kmemdup(data, size, GFP_KERNEL); if (!xfer_buff) { uea_err(INS_TO_USBDEV(sc), "can't allocate xfer_buff\n"); return ret; } ret = usb_control_msg(sc->usb_dev, usb_sndctrlpipe(sc->usb_dev, 0), UCDC_SEND_ENCAPSULATED_COMMAND, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, xfer_buff, size, CTRL_TIMEOUT); kfree(xfer_buff); if (ret < 0) { uea_err(INS_TO_USBDEV(sc), "usb_control_msg error %d\n", ret); return ret; } if (ret != size) { uea_err(INS_TO_USBDEV(sc), "usb_control_msg send only %d bytes (instead of %d)\n", ret, size); return -EIO; } return 0; } static int uea_cmv_e1(struct uea_softc *sc, u8 function, u32 address, u16 offset, u32 data) { struct cmv_e1 cmv; int ret; uea_enters(INS_TO_USBDEV(sc)); uea_vdbg(INS_TO_USBDEV(sc), "Function : %d-%d, Address : %c%c%c%c, " "offset : 0x%04x, data : 0x%08x\n", E1_FUNCTION_TYPE(function), E1_FUNCTION_SUBTYPE(function), E1_GETSA1(address), E1_GETSA2(address), E1_GETSA3(address), E1_GETSA4(address), offset, data); /* we send a request, but we expect a reply */ sc->cmv_dsc.e1.function = function | 0x2; sc->cmv_dsc.e1.idx++; sc->cmv_dsc.e1.address = address; sc->cmv_dsc.e1.offset = offset; cmv.wPreamble = cpu_to_le16(E1_PREAMBLE); cmv.bDirection = E1_HOSTTOMODEM; cmv.bFunction = function; cmv.wIndex = cpu_to_le16(sc->cmv_dsc.e1.idx); put_unaligned_le32(address, &cmv.dwSymbolicAddress); cmv.wOffsetAddress = cpu_to_le16(offset); put_unaligned_le32(data >> 16 | data << 16, &cmv.dwData); ret = uea_request(sc, UEA_E1_SET_BLOCK, UEA_MPTX_START, sizeof(cmv), &cmv); if (ret < 0) return ret; ret = wait_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return ret; } static int uea_cmv_e4(struct uea_softc *sc, u16 function, u16 group, u16 address, u16 offset, u32 data) { struct cmv_e4 cmv; int ret; uea_enters(INS_TO_USBDEV(sc)); memset(&cmv, 0, sizeof(cmv)); uea_vdbg(INS_TO_USBDEV(sc), "Function : %d-%d, Group : 0x%04x, " "Address : 0x%04x, offset : 0x%04x, data : 0x%08x\n", E4_FUNCTION_TYPE(function), E4_FUNCTION_SUBTYPE(function), group, address, offset, data); /* we send a request, but we expect a reply */ sc->cmv_dsc.e4.function = function | (0x1 << 4); sc->cmv_dsc.e4.offset = offset; sc->cmv_dsc.e4.address = address; sc->cmv_dsc.e4.group = group; cmv.wFunction = cpu_to_be16(function); cmv.wGroup = cpu_to_be16(group); cmv.wAddress = cpu_to_be16(address); cmv.wOffset = cpu_to_be16(offset); cmv.dwData[0] = cpu_to_be32(data); ret = uea_request(sc, UEA_E4_SET_BLOCK, UEA_MPTX_START, sizeof(cmv), &cmv); if (ret < 0) return ret; ret = wait_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return ret; } static inline int uea_read_cmv_e1(struct uea_softc *sc, u32 address, u16 offset, u32 *data) { int ret = uea_cmv_e1(sc, E1_MAKEFUNCTION(E1_MEMACCESS, E1_REQUESTREAD), address, offset, 0); if (ret < 0) uea_err(INS_TO_USBDEV(sc), "reading cmv failed with error %d\n", ret); else *data = sc->data; return ret; } static inline int uea_read_cmv_e4(struct uea_softc *sc, u8 size, u16 group, u16 address, u16 offset, u32 *data) { int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, E4_REQUESTREAD, size), group, address, offset, 0); if (ret < 0) uea_err(INS_TO_USBDEV(sc), "reading cmv failed with error %d\n", ret); else { *data = sc->data; /* size is in 16-bit word quantities */ if (size > 2) *(data + 1) = sc->data1; } return ret; } static inline int uea_write_cmv_e1(struct uea_softc *sc, u32 address, u16 offset, u32 data) { int ret = uea_cmv_e1(sc, E1_MAKEFUNCTION(E1_MEMACCESS, E1_REQUESTWRITE), address, offset, data); if (ret < 0) uea_err(INS_TO_USBDEV(sc), "writing cmv failed with error %d\n", ret); return ret; } static inline int uea_write_cmv_e4(struct uea_softc *sc, u8 size, u16 group, u16 address, u16 offset, u32 data) { int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, E4_REQUESTWRITE, size), group, address, offset, data); if (ret < 0) uea_err(INS_TO_USBDEV(sc), "writing cmv failed with error %d\n", ret); return ret; } static void uea_set_bulk_timeout(struct uea_softc *sc, u32 dsrate) { int ret; u16 timeout; /* in bulk mode the modem have problem with high rate * changing internal timing could improve things, but the * value is mysterious. * ADI930 don't support it (-EPIPE error). */ if (UEA_CHIP_VERSION(sc) == ADI930 || altsetting[sc->modem_index] > 0 || sc->stats.phy.dsrate == dsrate) return; /* Original timing (1Mbit/s) from ADI (used in windows driver) */ timeout = (dsrate <= 1024*1024) ? 0 : 1; ret = uea_request(sc, UEA_SET_TIMEOUT, timeout, 0, NULL); uea_info(INS_TO_USBDEV(sc), "setting new timeout %d%s\n", timeout, ret < 0 ? " failed" : ""); } /* * Monitor the modem and update the stat * return 0 if everything is ok * return < 0 if an error occurs (-EAGAIN reboot needed) */ static int uea_stat_e1(struct uea_softc *sc) { u32 data; int ret; uea_enters(INS_TO_USBDEV(sc)); data = sc->stats.phy.state; ret = uea_read_cmv_e1(sc, E1_SA_STAT, 0, &sc->stats.phy.state); if (ret < 0) return ret; switch (GET_STATUS(sc->stats.phy.state)) { case 0: /* not yet synchronized */ uea_dbg(INS_TO_USBDEV(sc), "modem not yet synchronized\n"); return 0; case 1: /* initialization */ uea_dbg(INS_TO_USBDEV(sc), "modem initializing\n"); return 0; case 2: /* operational */ uea_vdbg(INS_TO_USBDEV(sc), "modem operational\n"); break; case 3: /* fail ... */ uea_info(INS_TO_USBDEV(sc), "modem synchronization failed" " (may be try other cmv/dsp)\n"); return -EAGAIN; case 4 ... 6: /* test state */ uea_warn(INS_TO_USBDEV(sc), "modem in test mode - not supported\n"); return -EAGAIN; case 7: /* fast-retain ... */ uea_info(INS_TO_USBDEV(sc), "modem in fast-retain mode\n"); return 0; default: uea_err(INS_TO_USBDEV(sc), "modem invalid SW mode %d\n", GET_STATUS(sc->stats.phy.state)); return -EAGAIN; } if (GET_STATUS(data) != 2) { uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_OFF, 0, NULL); uea_info(INS_TO_USBDEV(sc), "modem operational\n"); /* release the dsp firmware as it is not needed until * the next failure */ release_firmware(sc->dsp_firm); sc->dsp_firm = NULL; } /* always update it as atm layer could not be init when we switch to * operational state */ UPDATE_ATM_SIGNAL(ATM_PHY_SIG_FOUND); /* wake up processes waiting for synchronization */ wake_up(&sc->sync_q); ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 2, &sc->stats.phy.flags); if (ret < 0) return ret; sc->stats.phy.mflags |= sc->stats.phy.flags; /* in case of a flags ( for example delineation LOSS (& 0x10)), * we check the status again in order to detect the failure earlier */ if (sc->stats.phy.flags) { uea_dbg(INS_TO_USBDEV(sc), "Stat flag = 0x%x\n", sc->stats.phy.flags); return 0; } ret = uea_read_cmv_e1(sc, E1_SA_RATE, 0, &data); if (ret < 0) return ret; uea_set_bulk_timeout(sc, (data >> 16) * 32); sc->stats.phy.dsrate = (data >> 16) * 32; sc->stats.phy.usrate = (data & 0xffff) * 32; UPDATE_ATM_STAT(link_rate, sc->stats.phy.dsrate * 1000 / 424); ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 23, &data); if (ret < 0) return ret; sc->stats.phy.dsattenuation = (data & 0xff) / 2; ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 47, &data); if (ret < 0) return ret; sc->stats.phy.usattenuation = (data & 0xff) / 2; ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 25, &sc->stats.phy.dsmargin); if (ret < 0) return ret; ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 49, &sc->stats.phy.usmargin); if (ret < 0) return ret; ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 51, &sc->stats.phy.rxflow); if (ret < 0) return ret; ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 52, &sc->stats.phy.txflow); if (ret < 0) return ret; ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 54, &sc->stats.phy.dsunc); if (ret < 0) return ret; /* only for atu-c */ ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 58, &sc->stats.phy.usunc); if (ret < 0) return ret; ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 53, &sc->stats.phy.dscorr); if (ret < 0) return ret; /* only for atu-c */ ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 57, &sc->stats.phy.uscorr); if (ret < 0) return ret; ret = uea_read_cmv_e1(sc, E1_SA_INFO, 8, &sc->stats.phy.vidco); if (ret < 0) return ret; ret = uea_read_cmv_e1(sc, E1_SA_INFO, 13, &sc->stats.phy.vidcpe); if (ret < 0) return ret; return 0; } static int uea_stat_e4(struct uea_softc *sc) { u32 data; u32 tmp_arr[2]; int ret; uea_enters(INS_TO_USBDEV(sc)); data = sc->stats.phy.state; /* XXX only need to be done before operationnal... */ ret = uea_read_cmv_e4(sc, 1, E4_SA_STAT, 0, 0, &sc->stats.phy.state); if (ret < 0) return ret; switch (sc->stats.phy.state) { case 0x0: /* not yet synchronized */ case 0x1: case 0x3: case 0x4: uea_dbg(INS_TO_USBDEV(sc), "modem not yet " "synchronized\n"); return 0; case 0x5: /* initialization */ case 0x6: case 0x9: case 0xa: uea_dbg(INS_TO_USBDEV(sc), "modem initializing\n"); return 0; case 0x2: /* fail ... */ uea_info(INS_TO_USBDEV(sc), "modem synchronization " "failed (may be try other cmv/dsp)\n"); return -EAGAIN; case 0x7: /* operational */ break; default: uea_warn(INS_TO_USBDEV(sc), "unknown state: %x\n", sc->stats.phy.state); return 0; } if (data != 7) { uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_OFF, 0, NULL); uea_info(INS_TO_USBDEV(sc), "modem operational\n"); /* release the dsp firmware as it is not needed until * the next failure */ release_firmware(sc->dsp_firm); sc->dsp_firm = NULL; } /* always update it as atm layer could not be init when we switch to * operational state */ UPDATE_ATM_SIGNAL(ATM_PHY_SIG_FOUND); /* wake up processes waiting for synchronization */ wake_up(&sc->sync_q); /* TODO improve this state machine : * we need some CMV info : what they do and their unit * we should find the equivalent of eagle3- CMV */ /* check flags */ ret = uea_read_cmv_e4(sc, 1, E4_SA_DIAG, 0, 0, &sc->stats.phy.flags); if (ret < 0) return ret; sc->stats.phy.mflags |= sc->stats.phy.flags; /* in case of a flags ( for example delineation LOSS (& 0x10)), * we check the status again in order to detect the failure earlier */ if (sc->stats.phy.flags) { uea_dbg(INS_TO_USBDEV(sc), "Stat flag = 0x%x\n", sc->stats.phy.flags); if (sc->stats.phy.flags & 1) /* delineation LOSS */ return -EAGAIN; if (sc->stats.phy.flags & 0x4000) /* Reset Flag */ return -EAGAIN; return 0; } /* rate data may be in upper or lower half of 64 bit word, strange */ ret = uea_read_cmv_e4(sc, 4, E4_SA_RATE, 0, 0, tmp_arr); if (ret < 0) return ret; data = (tmp_arr[0]) ? tmp_arr[0] : tmp_arr[1]; sc->stats.phy.usrate = data / 1000; ret = uea_read_cmv_e4(sc, 4, E4_SA_RATE, 1, 0, tmp_arr); if (ret < 0) return ret; data = (tmp_arr[0]) ? tmp_arr[0] : tmp_arr[1]; uea_set_bulk_timeout(sc, data / 1000); sc->stats.phy.dsrate = data / 1000; UPDATE_ATM_STAT(link_rate, sc->stats.phy.dsrate * 1000 / 424); ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 68, 1, &data); if (ret < 0) return ret; sc->stats.phy.dsattenuation = data / 10; ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 69, 1, &data); if (ret < 0) return ret; sc->stats.phy.usattenuation = data / 10; ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 68, 3, &data); if (ret < 0) return ret; sc->stats.phy.dsmargin = data / 2; ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 69, 3, &data); if (ret < 0) return ret; sc->stats.phy.usmargin = data / 10; return 0; } static void cmvs_file_name(struct uea_softc *sc, char *const cmv_name, int ver) { char file_arr[] = "CMVxy.bin"; char *file; kernel_param_lock(THIS_MODULE); /* set proper name corresponding modem version and line type */ if (cmv_file[sc->modem_index] == NULL) { if (UEA_CHIP_VERSION(sc) == ADI930) file_arr[3] = '9'; else if (UEA_CHIP_VERSION(sc) == EAGLE_IV) file_arr[3] = '4'; else file_arr[3] = 'e'; file_arr[4] = IS_ISDN(sc) ? 'i' : 'p'; file = file_arr; } else file = cmv_file[sc->modem_index]; strcpy(cmv_name, FW_DIR); strlcat(cmv_name, file, UEA_FW_NAME_MAX); if (ver == 2) strlcat(cmv_name, ".v2", UEA_FW_NAME_MAX); kernel_param_unlock(THIS_MODULE); } static int request_cmvs_old(struct uea_softc *sc, void **cmvs, const struct firmware **fw) { int ret, size; u8 *data; char cmv_name[UEA_FW_NAME_MAX]; /* 30 bytes stack variable */ cmvs_file_name(sc, cmv_name, 1); ret = request_firmware(fw, cmv_name, &sc->usb_dev->dev); if (ret < 0) { uea_err(INS_TO_USBDEV(sc), "requesting firmware %s failed with error %d\n", cmv_name, ret); return ret; } data = (u8 *) (*fw)->data; size = (*fw)->size; if (size < 1) goto err_fw_corrupted; if (size != *data * sizeof(struct uea_cmvs_v1) + 1) goto err_fw_corrupted; *cmvs = (void *)(data + 1); return *data; err_fw_corrupted: uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", cmv_name); release_firmware(*fw); return -EILSEQ; } static int request_cmvs(struct uea_softc *sc, void **cmvs, const struct firmware **fw, int *ver) { int ret, size; u32 crc; u8 *data; char cmv_name[UEA_FW_NAME_MAX]; /* 30 bytes stack variable */ cmvs_file_name(sc, cmv_name, 2); ret = request_firmware(fw, cmv_name, &sc->usb_dev->dev); if (ret < 0) { /* if caller can handle old version, try to provide it */ if (*ver == 1) { uea_warn(INS_TO_USBDEV(sc), "requesting " "firmware %s failed, " "try to get older cmvs\n", cmv_name); return request_cmvs_old(sc, cmvs, fw); } uea_err(INS_TO_USBDEV(sc), "requesting firmware %s failed with error %d\n", cmv_name, ret); return ret; } size = (*fw)->size; data = (u8 *) (*fw)->data; if (size < 4 || strncmp(data, "cmv2", 4) != 0) { if (*ver == 1) { uea_warn(INS_TO_USBDEV(sc), "firmware %s is corrupted," " try to get older cmvs\n", cmv_name); release_firmware(*fw); return request_cmvs_old(sc, cmvs, fw); } goto err_fw_corrupted; } *ver = 2; data += 4; size -= 4; if (size < 5) goto err_fw_corrupted; crc = get_unaligned_le32(data); data += 4; size -= 4; if (crc32_be(0, data, size) != crc) goto err_fw_corrupted; if (size != *data * sizeof(struct uea_cmvs_v2) + 1) goto err_fw_corrupted; *cmvs = (void *) (data + 1); return *data; err_fw_corrupted: uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", cmv_name); release_firmware(*fw); return -EILSEQ; } static int uea_send_cmvs_e1(struct uea_softc *sc) { int i, ret, len; void *cmvs_ptr; const struct firmware *cmvs_fw; int ver = 1; /* we can handle v1 cmv firmware version; */ /* Enter in R-IDLE (cmv) until instructed otherwise */ ret = uea_write_cmv_e1(sc, E1_SA_CNTL, 0, 1); if (ret < 0) return ret; /* Dump firmware version */ ret = uea_read_cmv_e1(sc, E1_SA_INFO, 10, &sc->stats.phy.firmid); if (ret < 0) return ret; uea_info(INS_TO_USBDEV(sc), "ATU-R firmware version : %x\n", sc->stats.phy.firmid); /* get options */ ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); if (ret < 0) return ret; /* send options */ if (ver == 1) { struct uea_cmvs_v1 *cmvs_v1 = cmvs_ptr; uea_warn(INS_TO_USBDEV(sc), "use deprecated cmvs version, " "please update your firmware\n"); for (i = 0; i < len; i++) { ret = uea_write_cmv_e1(sc, get_unaligned_le32(&cmvs_v1[i].address), get_unaligned_le16(&cmvs_v1[i].offset), get_unaligned_le32(&cmvs_v1[i].data)); if (ret < 0) goto out; } } else if (ver == 2) { struct uea_cmvs_v2 *cmvs_v2 = cmvs_ptr; for (i = 0; i < len; i++) { ret = uea_write_cmv_e1(sc, get_unaligned_le32(&cmvs_v2[i].address), (u16) get_unaligned_le32(&cmvs_v2[i].offset), get_unaligned_le32(&cmvs_v2[i].data)); if (ret < 0) goto out; } } else { /* This really should not happen */ uea_err(INS_TO_USBDEV(sc), "bad cmvs version %d\n", ver); goto out; } /* Enter in R-ACT-REQ */ ret = uea_write_cmv_e1(sc, E1_SA_CNTL, 0, 2); uea_vdbg(INS_TO_USBDEV(sc), "Entering in R-ACT-REQ state\n"); uea_info(INS_TO_USBDEV(sc), "modem started, waiting " "synchronization...\n"); out: release_firmware(cmvs_fw); return ret; } static int uea_send_cmvs_e4(struct uea_softc *sc) { int i, ret, len; void *cmvs_ptr; const struct firmware *cmvs_fw; int ver = 2; /* we can only handle v2 cmv firmware version; */ /* Enter in R-IDLE (cmv) until instructed otherwise */ ret = uea_write_cmv_e4(sc, 1, E4_SA_CNTL, 0, 0, 1); if (ret < 0) return ret; /* Dump firmware version */ /* XXX don't read the 3th byte as it is always 6 */ ret = uea_read_cmv_e4(sc, 2, E4_SA_INFO, 55, 0, &sc->stats.phy.firmid); if (ret < 0) return ret; uea_info(INS_TO_USBDEV(sc), "ATU-R firmware version : %x\n", sc->stats.phy.firmid); /* get options */ ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); if (ret < 0) return ret; /* send options */ if (ver == 2) { struct uea_cmvs_v2 *cmvs_v2 = cmvs_ptr; for (i = 0; i < len; i++) { ret = uea_write_cmv_e4(sc, 1, get_unaligned_le32(&cmvs_v2[i].group), get_unaligned_le32(&cmvs_v2[i].address), get_unaligned_le32(&cmvs_v2[i].offset), get_unaligned_le32(&cmvs_v2[i].data)); if (ret < 0) goto out; } } else { /* This really should not happen */ uea_err(INS_TO_USBDEV(sc), "bad cmvs version %d\n", ver); goto out; } /* Enter in R-ACT-REQ */ ret = uea_write_cmv_e4(sc, 1, E4_SA_CNTL, 0, 0, 2); uea_vdbg(INS_TO_USBDEV(sc), "Entering in R-ACT-REQ state\n"); uea_info(INS_TO_USBDEV(sc), "modem started, waiting " "synchronization...\n"); out: release_firmware(cmvs_fw); return ret; } /* Start boot post firmware modem: * - send reset commands through usb control pipe * - start workqueue for DSP loading * - send CMV options to modem */ static int uea_start_reset(struct uea_softc *sc) { u16 zero = 0; /* ;-) */ int ret; uea_enters(INS_TO_USBDEV(sc)); uea_info(INS_TO_USBDEV(sc), "(re)booting started\n"); /* mask interrupt */ sc->booting = 1; /* We need to set this here because, a ack timeout could have occurred, * but before we start the reboot, the ack occurs and set this to 1. * So we will failed to wait Ready CMV. */ sc->cmv_ack = 0; UPDATE_ATM_SIGNAL(ATM_PHY_SIG_LOST); /* reset statistics */ memset(&sc->stats, 0, sizeof(struct uea_stats)); /* tell the modem that we want to boot in IDMA mode */ uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_ON, 0, NULL); uea_request(sc, UEA_SET_MODE, UEA_BOOT_IDMA, 0, NULL); /* enter reset mode */ uea_request(sc, UEA_SET_MODE, UEA_START_RESET, 0, NULL); /* original driver use 200ms, but windows driver use 100ms */ ret = uea_wait(sc, 0, msecs_to_jiffies(100)); if (ret < 0) return ret; /* leave reset mode */ uea_request(sc, UEA_SET_MODE, UEA_END_RESET, 0, NULL); if (UEA_CHIP_VERSION(sc) != EAGLE_IV) { /* clear tx and rx mailboxes */ uea_request(sc, UEA_SET_2183_DATA, UEA_MPTX_MAILBOX, 2, &zero); uea_request(sc, UEA_SET_2183_DATA, UEA_MPRX_MAILBOX, 2, &zero); uea_request(sc, UEA_SET_2183_DATA, UEA_SWAP_MAILBOX, 2, &zero); } ret = uea_wait(sc, 0, msecs_to_jiffies(1000)); if (ret < 0) return ret; if (UEA_CHIP_VERSION(sc) == EAGLE_IV) sc->cmv_dsc.e4.function = E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, E4_MODEMREADY, 1); else sc->cmv_dsc.e1.function = E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, E1_MODEMREADY); /* demask interrupt */ sc->booting = 0; /* start loading DSP */ sc->pageno = 0; sc->ovl = 0; schedule_work(&sc->task); /* wait for modem ready CMV */ ret = wait_cmv_ack(sc); if (ret < 0) return ret; uea_vdbg(INS_TO_USBDEV(sc), "Ready CMV received\n"); ret = sc->send_cmvs(sc); if (ret < 0) return ret; sc->reset = 0; uea_leaves(INS_TO_USBDEV(sc)); return ret; } /* * In case of an error wait 1s before rebooting the modem * if the modem don't request reboot (-EAGAIN). * Monitor the modem every 1s. */ static int uea_kthread(void *data) { struct uea_softc *sc = data; int ret = -EAGAIN; set_freezable(); uea_enters(INS_TO_USBDEV(sc)); while (!kthread_should_stop()) { if (ret < 0 || sc->reset) ret = uea_start_reset(sc); if (!ret) ret = sc->stat(sc); if (ret != -EAGAIN) uea_wait(sc, 0, msecs_to_jiffies(1000)); } uea_leaves(INS_TO_USBDEV(sc)); return ret; } /* Load second usb firmware for ADI930 chip */ static int load_XILINX_firmware(struct uea_softc *sc) { const struct firmware *fw_entry; int ret, size, u, ln; const u8 *pfw; u8 value; char *fw_name = FPGA930_FIRMWARE; uea_enters(INS_TO_USBDEV(sc)); ret = request_firmware(&fw_entry, fw_name, &sc->usb_dev->dev); if (ret) { uea_err(INS_TO_USBDEV(sc), "firmware %s is not available\n", fw_name); goto err0; } pfw = fw_entry->data; size = fw_entry->size; if (size != 0x577B) { uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", fw_name); ret = -EILSEQ; goto err1; } for (u = 0; u < size; u += ln) { ln = min(size - u, 64); ret = uea_request(sc, 0xe, 0, ln, pfw + u); if (ret < 0) { uea_err(INS_TO_USBDEV(sc), "elsa download data failed (%d)\n", ret); goto err1; } } /* finish to send the fpga */ ret = uea_request(sc, 0xe, 1, 0, NULL); if (ret < 0) { uea_err(INS_TO_USBDEV(sc), "elsa download data failed (%d)\n", ret); goto err1; } /* Tell the modem we finish : de-assert reset */ value = 0; ret = uea_send_modem_cmd(sc->usb_dev, 0xe, 1, &value); if (ret < 0) uea_err(sc->usb_dev, "elsa de-assert failed with error" " %d\n", ret); err1: release_firmware(fw_entry); err0: uea_leaves(INS_TO_USBDEV(sc)); return ret; } /* The modem send us an ack. First with check if it right */ static void uea_dispatch_cmv_e1(struct uea_softc *sc, struct intr_pkt *intr) { struct cmv_dsc_e1 *dsc = &sc->cmv_dsc.e1; struct cmv_e1 *cmv = &intr->u.e1.s2.cmv; uea_enters(INS_TO_USBDEV(sc)); if (le16_to_cpu(cmv->wPreamble) != E1_PREAMBLE) goto bad1; if (cmv->bDirection != E1_MODEMTOHOST) goto bad1; /* FIXME : ADI930 reply wrong preamble (func = 2, sub = 2) to * the first MEMACCESS cmv. Ignore it... */ if (cmv->bFunction != dsc->function) { if (UEA_CHIP_VERSION(sc) == ADI930 && cmv->bFunction == E1_MAKEFUNCTION(2, 2)) { cmv->wIndex = cpu_to_le16(dsc->idx); put_unaligned_le32(dsc->address, &cmv->dwSymbolicAddress); cmv->wOffsetAddress = cpu_to_le16(dsc->offset); } else goto bad2; } if (cmv->bFunction == E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, E1_MODEMREADY)) { wake_up_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return; } /* in case of MEMACCESS */ if (le16_to_cpu(cmv->wIndex) != dsc->idx || get_unaligned_le32(&cmv->dwSymbolicAddress) != dsc->address || le16_to_cpu(cmv->wOffsetAddress) != dsc->offset) goto bad2; sc->data = get_unaligned_le32(&cmv->dwData); sc->data = sc->data << 16 | sc->data >> 16; wake_up_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return; bad2: uea_err(INS_TO_USBDEV(sc), "unexpected cmv received, " "Function : %d, Subfunction : %d\n", E1_FUNCTION_TYPE(cmv->bFunction), E1_FUNCTION_SUBTYPE(cmv->bFunction)); uea_leaves(INS_TO_USBDEV(sc)); return; bad1: uea_err(INS_TO_USBDEV(sc), "invalid cmv received, " "wPreamble %d, bDirection %d\n", le16_to_cpu(cmv->wPreamble), cmv->bDirection); uea_leaves(INS_TO_USBDEV(sc)); } /* The modem send us an ack. First with check if it right */ static void uea_dispatch_cmv_e4(struct uea_softc *sc, struct intr_pkt *intr) { struct cmv_dsc_e4 *dsc = &sc->cmv_dsc.e4; struct cmv_e4 *cmv = &intr->u.e4.s2.cmv; uea_enters(INS_TO_USBDEV(sc)); uea_dbg(INS_TO_USBDEV(sc), "cmv %x %x %x %x %x %x\n", be16_to_cpu(cmv->wGroup), be16_to_cpu(cmv->wFunction), be16_to_cpu(cmv->wOffset), be16_to_cpu(cmv->wAddress), be32_to_cpu(cmv->dwData[0]), be32_to_cpu(cmv->dwData[1])); if (be16_to_cpu(cmv->wFunction) != dsc->function) goto bad2; if (be16_to_cpu(cmv->wFunction) == E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, E4_MODEMREADY, 1)) { wake_up_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return; } /* in case of MEMACCESS */ if (be16_to_cpu(cmv->wOffset) != dsc->offset || be16_to_cpu(cmv->wGroup) != dsc->group || be16_to_cpu(cmv->wAddress) != dsc->address) goto bad2; sc->data = be32_to_cpu(cmv->dwData[0]); sc->data1 = be32_to_cpu(cmv->dwData[1]); wake_up_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return; bad2: uea_err(INS_TO_USBDEV(sc), "unexpected cmv received, " "Function : %d, Subfunction : %d\n", E4_FUNCTION_TYPE(cmv->wFunction), E4_FUNCTION_SUBTYPE(cmv->wFunction)); uea_leaves(INS_TO_USBDEV(sc)); return; } static void uea_schedule_load_page_e1(struct uea_softc *sc, struct intr_pkt *intr) { sc->pageno = intr->e1_bSwapPageNo; sc->ovl = intr->e1_bOvl >> 4 | intr->e1_bOvl << 4; schedule_work(&sc->task); } static void uea_schedule_load_page_e4(struct uea_softc *sc, struct intr_pkt *intr) { sc->pageno = intr->e4_bSwapPageNo; schedule_work(&sc->task); } /* * interrupt handler */ static void uea_intr(struct urb *urb) { struct uea_softc *sc = urb->context; struct intr_pkt *intr = urb->transfer_buffer; int status = urb->status; uea_enters(INS_TO_USBDEV(sc)); if (unlikely(status < 0)) { uea_err(INS_TO_USBDEV(sc), "uea_intr() failed with %d\n", status); return; } /* device-to-host interrupt */ if (intr->bType != 0x08 || sc->booting) { uea_err(INS_TO_USBDEV(sc), "wrong interrupt\n"); goto resubmit; } switch (le16_to_cpu(intr->wInterrupt)) { case INT_LOADSWAPPAGE: sc->schedule_load_page(sc, intr); break; case INT_INCOMINGCMV: sc->dispatch_cmv(sc, intr); break; default: uea_err(INS_TO_USBDEV(sc), "unknown interrupt %u\n", le16_to_cpu(intr->wInterrupt)); } resubmit: usb_submit_urb(sc->urb_int, GFP_ATOMIC); } /* * Start the modem : init the data and start kernel thread */ static int uea_boot(struct uea_softc *sc, struct usb_interface *intf) { struct intr_pkt *intr; int ret = -ENOMEM; int size; uea_enters(INS_TO_USBDEV(sc)); if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { size = E4_INTR_PKT_SIZE; sc->dispatch_cmv = uea_dispatch_cmv_e4; sc->schedule_load_page = uea_schedule_load_page_e4; sc->stat = uea_stat_e4; sc->send_cmvs = uea_send_cmvs_e4; INIT_WORK(&sc->task, uea_load_page_e4); } else { size = E1_INTR_PKT_SIZE; sc->dispatch_cmv = uea_dispatch_cmv_e1; sc->schedule_load_page = uea_schedule_load_page_e1; sc->stat = uea_stat_e1; sc->send_cmvs = uea_send_cmvs_e1; INIT_WORK(&sc->task, uea_load_page_e1); } init_waitqueue_head(&sc->sync_q); if (UEA_CHIP_VERSION(sc) == ADI930) load_XILINX_firmware(sc); if (intf->cur_altsetting->desc.bNumEndpoints < 1) { ret = -ENODEV; goto err0; } intr = kmalloc(size, GFP_KERNEL); if (!intr) goto err0; sc->urb_int = usb_alloc_urb(0, GFP_KERNEL); if (!sc->urb_int) goto err1; usb_fill_int_urb(sc->urb_int, sc->usb_dev, usb_rcvintpipe(sc->usb_dev, UEA_INTR_PIPE), intr, size, uea_intr, sc, intf->cur_altsetting->endpoint[0].desc.bInterval); ret = usb_submit_urb(sc->urb_int, GFP_KERNEL); if (ret < 0) { uea_err(INS_TO_USBDEV(sc), "urb submission failed with error %d\n", ret); goto err1; } /* Create worker thread, but don't start it here. Start it after * all usbatm generic initialization is done. */ sc->kthread = kthread_create(uea_kthread, sc, "ueagle-atm"); if (IS_ERR(sc->kthread)) { uea_err(INS_TO_USBDEV(sc), "failed to create thread\n"); ret = PTR_ERR(sc->kthread); goto err2; } uea_leaves(INS_TO_USBDEV(sc)); return 0; err2: usb_kill_urb(sc->urb_int); err1: usb_free_urb(sc->urb_int); sc->urb_int = NULL; kfree(intr); err0: uea_leaves(INS_TO_USBDEV(sc)); return ret; } /* * Stop the modem : kill kernel thread and free data */ static void uea_stop(struct uea_softc *sc) { int ret; uea_enters(INS_TO_USBDEV(sc)); ret = kthread_stop(sc->kthread); uea_dbg(INS_TO_USBDEV(sc), "kthread finish with status %d\n", ret); uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_ON, 0, NULL); usb_kill_urb(sc->urb_int); kfree(sc->urb_int->transfer_buffer); usb_free_urb(sc->urb_int); /* flush the work item, when no one can schedule it */ flush_work(&sc->task); release_firmware(sc->dsp_firm); uea_leaves(INS_TO_USBDEV(sc)); } /* syfs interface */ static struct uea_softc *dev_to_uea(struct device *dev) { struct usb_interface *intf; struct usbatm_data *usbatm; intf = to_usb_interface(dev); if (!intf) return NULL; usbatm = usb_get_intfdata(intf); if (!usbatm) return NULL; return usbatm->driver_data; } static ssize_t stat_status_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret = -ENODEV; struct uea_softc *sc; mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; ret = sysfs_emit(buf, "%08x\n", sc->stats.phy.state); out: mutex_unlock(&uea_mutex); return ret; } static ssize_t stat_status_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int ret = -ENODEV; struct uea_softc *sc; mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; sc->reset = 1; ret = count; out: mutex_unlock(&uea_mutex); return ret; } static DEVICE_ATTR_RW(stat_status); static ssize_t stat_human_status_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret = -ENODEV; int modem_state; struct uea_softc *sc; mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { switch (sc->stats.phy.state) { case 0x0: /* not yet synchronized */ case 0x1: case 0x3: case 0x4: modem_state = 0; break; case 0x5: /* initialization */ case 0x6: case 0x9: case 0xa: modem_state = 1; break; case 0x7: /* operational */ modem_state = 2; break; case 0x2: /* fail ... */ modem_state = 3; break; default: /* unknown */ modem_state = 4; break; } } else modem_state = GET_STATUS(sc->stats.phy.state); switch (modem_state) { case 0: ret = sysfs_emit(buf, "Modem is booting\n"); break; case 1: ret = sysfs_emit(buf, "Modem is initializing\n"); break; case 2: ret = sysfs_emit(buf, "Modem is operational\n"); break; case 3: ret = sysfs_emit(buf, "Modem synchronization failed\n"); break; default: ret = sysfs_emit(buf, "Modem state is unknown\n"); break; } out: mutex_unlock(&uea_mutex); return ret; } static DEVICE_ATTR_RO(stat_human_status); static ssize_t stat_delin_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret = -ENODEV; struct uea_softc *sc; char *delin = "GOOD"; mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { if (sc->stats.phy.flags & 0x4000) delin = "RESET"; else if (sc->stats.phy.flags & 0x0001) delin = "LOSS"; } else { if (sc->stats.phy.flags & 0x0C00) delin = "ERROR"; else if (sc->stats.phy.flags & 0x0030) delin = "LOSS"; } ret = sysfs_emit(buf, "%s\n", delin); out: mutex_unlock(&uea_mutex); return ret; } static DEVICE_ATTR_RO(stat_delin); #define UEA_ATTR(name, reset) \ \ static ssize_t stat_##name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ int ret = -ENODEV; \ struct uea_softc *sc; \ \ mutex_lock(&uea_mutex); \ sc = dev_to_uea(dev); \ if (!sc) \ goto out; \ ret = sysfs_emit(buf, "%08x\n", sc->stats.phy.name); \ if (reset) \ sc->stats.phy.name = 0; \ out: \ mutex_unlock(&uea_mutex); \ return ret; \ } \ \ static DEVICE_ATTR_RO(stat_##name) UEA_ATTR(mflags, 1); UEA_ATTR(vidcpe, 0); UEA_ATTR(usrate, 0); UEA_ATTR(dsrate, 0); UEA_ATTR(usattenuation, 0); UEA_ATTR(dsattenuation, 0); UEA_ATTR(usmargin, 0); UEA_ATTR(dsmargin, 0); UEA_ATTR(txflow, 0); UEA_ATTR(rxflow, 0); UEA_ATTR(uscorr, 0); UEA_ATTR(dscorr, 0); UEA_ATTR(usunc, 0); UEA_ATTR(dsunc, 0); UEA_ATTR(firmid, 0); /* Retrieve the device End System Identifier (MAC) */ static int uea_getesi(struct uea_softc *sc, u_char *esi) { unsigned char mac_str[2 * ETH_ALEN + 1]; int i; if (usb_string (sc->usb_dev, sc->usb_dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) != 2 * ETH_ALEN) return 1; for (i = 0; i < ETH_ALEN; i++) esi[i] = hex_to_bin(mac_str[2 * i]) * 16 + hex_to_bin(mac_str[2 * i + 1]); return 0; } /* ATM stuff */ static int uea_atm_open(struct usbatm_data *usbatm, struct atm_dev *atm_dev) { struct uea_softc *sc = usbatm->driver_data; return uea_getesi(sc, atm_dev->esi); } static int uea_heavy(struct usbatm_data *usbatm, struct usb_interface *intf) { struct uea_softc *sc = usbatm->driver_data; wait_event_interruptible(sc->sync_q, IS_OPERATIONAL(sc)); return 0; } static int claim_interface(struct usb_device *usb_dev, struct usbatm_data *usbatm, int ifnum) { int ret; struct usb_interface *intf = usb_ifnum_to_if(usb_dev, ifnum); if (!intf) { uea_err(usb_dev, "interface %d not found\n", ifnum); return -ENODEV; } ret = usb_driver_claim_interface(&uea_driver, intf, usbatm); if (ret != 0) uea_err(usb_dev, "can't claim interface %d, error %d\n", ifnum, ret); return ret; } static struct attribute *uea_attrs[] = { &dev_attr_stat_status.attr, &dev_attr_stat_mflags.attr, &dev_attr_stat_human_status.attr, &dev_attr_stat_delin.attr, &dev_attr_stat_vidcpe.attr, &dev_attr_stat_usrate.attr, &dev_attr_stat_dsrate.attr, &dev_attr_stat_usattenuation.attr, &dev_attr_stat_dsattenuation.attr, &dev_attr_stat_usmargin.attr, &dev_attr_stat_dsmargin.attr, &dev_attr_stat_txflow.attr, &dev_attr_stat_rxflow.attr, &dev_attr_stat_uscorr.attr, &dev_attr_stat_dscorr.attr, &dev_attr_stat_usunc.attr, &dev_attr_stat_dsunc.attr, &dev_attr_stat_firmid.attr, NULL, }; ATTRIBUTE_GROUPS(uea); static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *usb = interface_to_usbdev(intf); struct uea_softc *sc; int ret, ifnum = intf->altsetting->desc.bInterfaceNumber; unsigned int alt; uea_enters(usb); /* interface 0 is for firmware/monitoring */ if (ifnum != UEA_INTR_IFACE_NO) return -ENODEV; usbatm->flags = (sync_wait[modem_index] ? 0 : UDSL_SKIP_HEAVY_INIT); /* interface 1 is for outbound traffic */ ret = claim_interface(usb, usbatm, UEA_US_IFACE_NO); if (ret < 0) return ret; /* ADI930 has only 2 interfaces and inbound traffic is on interface 1 */ if (UEA_CHIP_VERSION(id) != ADI930) { /* interface 2 is for inbound traffic */ ret = claim_interface(usb, usbatm, UEA_DS_IFACE_NO); if (ret < 0) return ret; } sc = kzalloc(sizeof(struct uea_softc), GFP_KERNEL); if (!sc) return -ENOMEM; sc->usb_dev = usb; usbatm->driver_data = sc; sc->usbatm = usbatm; sc->modem_index = (modem_index < NB_MODEM) ? modem_index++ : 0; sc->driver_info = id->driver_info; /* first try to use module parameter */ if (annex[sc->modem_index] == 1) sc->annex = ANNEXA; else if (annex[sc->modem_index] == 2) sc->annex = ANNEXB; /* try to autodetect annex */ else if (sc->driver_info & AUTO_ANNEX_A) sc->annex = ANNEXA; else if (sc->driver_info & AUTO_ANNEX_B) sc->annex = ANNEXB; else sc->annex = (le16_to_cpu (sc->usb_dev->descriptor.bcdDevice) & 0x80) ? ANNEXB : ANNEXA; alt = altsetting[sc->modem_index]; /* ADI930 don't support iso */ if (UEA_CHIP_VERSION(id) != ADI930 && alt > 0) { if (alt <= 8 && usb_set_interface(usb, UEA_DS_IFACE_NO, alt) == 0) { uea_dbg(usb, "set alternate %u for 2 interface\n", alt); uea_info(usb, "using iso mode\n"); usbatm->flags |= UDSL_USE_ISOC | UDSL_IGNORE_EILSEQ; } else { uea_err(usb, "setting alternate %u failed for " "2 interface, using bulk mode\n", alt); } } ret = uea_boot(sc, intf); if (ret < 0) goto error; return 0; error: kfree(sc); return ret; } static void uea_unbind(struct usbatm_data *usbatm, struct usb_interface *intf) { struct uea_softc *sc = usbatm->driver_data; uea_stop(sc); kfree(sc); } static struct usbatm_driver uea_usbatm_driver = { .driver_name = "ueagle-atm", .bind = uea_bind, .atm_start = uea_atm_open, .unbind = uea_unbind, .heavy_init = uea_heavy, .bulk_in = UEA_BULK_DATA_PIPE, .bulk_out = UEA_BULK_DATA_PIPE, .isoc_in = UEA_ISO_DATA_PIPE, }; static int uea_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *usb = interface_to_usbdev(intf); int ret; uea_enters(usb); uea_info(usb, "ADSL device founded vid (%#X) pid (%#X) Rev (%#X): %s\n", le16_to_cpu(usb->descriptor.idVendor), le16_to_cpu(usb->descriptor.idProduct), le16_to_cpu(usb->descriptor.bcdDevice), chip_name[UEA_CHIP_VERSION(id)]); usb_reset_device(usb); if (UEA_IS_PREFIRM(id)) return uea_load_firmware(usb, UEA_CHIP_VERSION(id)); ret = usbatm_usb_probe(intf, id, &uea_usbatm_driver); if (ret == 0) { struct usbatm_data *usbatm = usb_get_intfdata(intf); struct uea_softc *sc = usbatm->driver_data; /* Ensure carrier is initialized to off as early as possible */ UPDATE_ATM_SIGNAL(ATM_PHY_SIG_LOST); /* Only start the worker thread when all init is done */ wake_up_process(sc->kthread); } return ret; } static void uea_disconnect(struct usb_interface *intf) { struct usb_device *usb = interface_to_usbdev(intf); int ifnum = intf->altsetting->desc.bInterfaceNumber; uea_enters(usb); /* ADI930 has 2 interfaces and eagle 3 interfaces. * Pre-firmware device has one interface */ if (usb->config->desc.bNumInterfaces != 1 && ifnum == 0) { mutex_lock(&uea_mutex); usbatm_usb_disconnect(intf); mutex_unlock(&uea_mutex); uea_info(usb, "ADSL device removed\n"); } uea_leaves(usb); } /* * List of supported VID/PID */ static const struct usb_device_id uea_ids[] = { {USB_DEVICE(ANALOG_VID, ADI930_PID_PREFIRM), .driver_info = ADI930 | PREFIRM}, {USB_DEVICE(ANALOG_VID, ADI930_PID_PSTFIRM), .driver_info = ADI930 | PSTFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PREFIRM), .driver_info = EAGLE_III | PREFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PSTFIRM), .driver_info = EAGLE_III | PSTFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PREFIRM), .driver_info = EAGLE_IV | PREFIRM}, {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PSTFIRM), .driver_info = EAGLE_IV | PSTFIRM}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_A}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_B}, {USB_DEVICE(ELSA_VID, ELSA_PID_PREFIRM), .driver_info = ADI930 | PREFIRM}, {USB_DEVICE(ELSA_VID, ELSA_PID_PSTFIRM), .driver_info = ADI930 | PSTFIRM}, {USB_DEVICE(ELSA_VID, ELSA_PID_A_PREFIRM), .driver_info = ADI930 | PREFIRM}, {USB_DEVICE(ELSA_VID, ELSA_PID_A_PSTFIRM), .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_A}, {USB_DEVICE(ELSA_VID, ELSA_PID_B_PREFIRM), .driver_info = ADI930 | PREFIRM}, {USB_DEVICE(ELSA_VID, ELSA_PID_B_PSTFIRM), .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_B}, {USB_DEVICE(USR_VID, MILLER_A_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, {USB_DEVICE(USR_VID, MILLER_A_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, {USB_DEVICE(USR_VID, MILLER_B_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, {USB_DEVICE(USR_VID, MILLER_B_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, {} }; /* * USB driver descriptor */ static struct usb_driver uea_driver = { .name = "ueagle-atm", .id_table = uea_ids, .probe = uea_probe, .disconnect = uea_disconnect, .dev_groups = uea_groups, }; MODULE_DEVICE_TABLE(usb, uea_ids); module_usb_driver(uea_driver); MODULE_AUTHOR("Damien Bergamini/Matthieu Castet/Stanislaw W. Gruszka"); MODULE_DESCRIPTION("ADI 930/Eagle USB ADSL Modem driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_FIRMWARE(EAGLE_FIRMWARE); MODULE_FIRMWARE(ADI930_FIRMWARE); MODULE_FIRMWARE(EAGLE_I_FIRMWARE); MODULE_FIRMWARE(EAGLE_II_FIRMWARE); MODULE_FIRMWARE(EAGLE_III_FIRMWARE); MODULE_FIRMWARE(EAGLE_IV_FIRMWARE); MODULE_FIRMWARE(DSP4I_FIRMWARE); MODULE_FIRMWARE(DSP4P_FIRMWARE); MODULE_FIRMWARE(DSP9I_FIRMWARE); MODULE_FIRMWARE(DSP9P_FIRMWARE); MODULE_FIRMWARE(DSPEI_FIRMWARE); MODULE_FIRMWARE(DSPEP_FIRMWARE); MODULE_FIRMWARE(FPGA930_FIRMWARE); MODULE_FIRMWARE(CMV4P_FIRMWARE); MODULE_FIRMWARE(CMV4PV2_FIRMWARE); MODULE_FIRMWARE(CMV4I_FIRMWARE); MODULE_FIRMWARE(CMV4IV2_FIRMWARE); MODULE_FIRMWARE(CMV9P_FIRMWARE); MODULE_FIRMWARE(CMV9PV2_FIRMWARE); MODULE_FIRMWARE(CMV9I_FIRMWARE); MODULE_FIRMWARE(CMV9IV2_FIRMWARE); MODULE_FIRMWARE(CMVEP_FIRMWARE); MODULE_FIRMWARE(CMVEPV2_FIRMWARE); MODULE_FIRMWARE(CMVEI_FIRMWARE); MODULE_FIRMWARE(CMVEIV2_FIRMWARE); |
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2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 | /* * Performance events: * * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de> * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra * * Data type definitions, declarations, prototypes. * * Started by: Thomas Gleixner and Ingo Molnar * * For licencing details see kernel-base/COPYING */ #ifndef _LINUX_PERF_EVENT_H #define _LINUX_PERF_EVENT_H #include <uapi/linux/perf_event.h> #include <uapi/linux/bpf_perf_event.h> /* * Kernel-internal data types and definitions: */ #ifdef CONFIG_PERF_EVENTS # include <asm/perf_event.h> # include <asm/local64.h> #endif #ifdef CONFIG_HAVE_HW_BREAKPOINT # include <linux/rhashtable-types.h> # include <asm/hw_breakpoint.h> #endif #include <linux/list.h> #include <linux/mutex.h> #include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/spinlock.h> #include <linux/hrtimer.h> #include <linux/fs.h> #include <linux/pid_namespace.h> #include <linux/workqueue.h> #include <linux/ftrace.h> #include <linux/cpu.h> #include <linux/irq_work.h> #include <linux/static_key.h> #include <linux/jump_label_ratelimit.h> #include <linux/atomic.h> #include <linux/sysfs.h> #include <linux/perf_regs.h> #include <linux/cgroup.h> #include <linux/refcount.h> #include <linux/security.h> #include <linux/static_call.h> #include <linux/lockdep.h> #include <asm/local.h> struct perf_callchain_entry { u64 nr; u64 ip[]; /* /proc/sys/kernel/perf_event_max_stack */ }; struct perf_callchain_entry_ctx { struct perf_callchain_entry *entry; u32 max_stack; u32 nr; short contexts; bool contexts_maxed; }; typedef unsigned long (*perf_copy_f)(void *dst, const void *src, unsigned long off, unsigned long len); struct perf_raw_frag { union { struct perf_raw_frag *next; unsigned long pad; }; perf_copy_f copy; void *data; u32 size; } __packed; struct perf_raw_record { struct perf_raw_frag frag; u32 size; }; static __always_inline bool perf_raw_frag_last(const struct perf_raw_frag *frag) { return frag->pad < sizeof(u64); } /* * branch stack layout: * nr: number of taken branches stored in entries[] * hw_idx: The low level index of raw branch records * for the most recent branch. * -1ULL means invalid/unknown. * * Note that nr can vary from sample to sample * branches (to, from) are stored from most recent * to least recent, i.e., entries[0] contains the most * recent branch. * The entries[] is an abstraction of raw branch records, * which may not be stored in age order in HW, e.g. Intel LBR. * The hw_idx is to expose the low level index of raw * branch record for the most recent branch aka entries[0]. * The hw_idx index is between -1 (unknown) and max depth, * which can be retrieved in /sys/devices/cpu/caps/branches. * For the architectures whose raw branch records are * already stored in age order, the hw_idx should be 0. */ struct perf_branch_stack { u64 nr; u64 hw_idx; struct perf_branch_entry entries[]; }; struct task_struct; /* * extra PMU register associated with an event */ struct hw_perf_event_extra { u64 config; /* register value */ unsigned int reg; /* register address or index */ int alloc; /* extra register already allocated */ int idx; /* index in shared_regs->regs[] */ }; /** * hw_perf_event::flag values * * PERF_EVENT_FLAG_ARCH bits are reserved for architecture-specific * usage. */ #define PERF_EVENT_FLAG_ARCH 0x0fffffff #define PERF_EVENT_FLAG_USER_READ_CNT 0x80000000 static_assert((PERF_EVENT_FLAG_USER_READ_CNT & PERF_EVENT_FLAG_ARCH) == 0); /** * struct hw_perf_event - performance event hardware details: */ struct hw_perf_event { #ifdef CONFIG_PERF_EVENTS union { struct { /* hardware */ u64 config; u64 config1; u64 last_tag; u64 dyn_constraint; unsigned long config_base; unsigned long event_base; int event_base_rdpmc; int idx; int last_cpu; int flags; struct hw_perf_event_extra extra_reg; struct hw_perf_event_extra branch_reg; }; struct { /* aux / Intel-PT */ u64 aux_config; /* * For AUX area events, aux_paused cannot be a state * flag because it can be updated asynchronously to * state. */ unsigned int aux_paused; }; struct { /* software */ struct hrtimer hrtimer; }; struct { /* tracepoint */ /* for tp_event->class */ struct list_head tp_list; }; struct { /* amd_power */ u64 pwr_acc; u64 ptsc; }; #ifdef CONFIG_HAVE_HW_BREAKPOINT struct { /* breakpoint */ /* * Crufty hack to avoid the chicken and egg * problem hw_breakpoint has with context * creation and event initalization. */ struct arch_hw_breakpoint info; struct rhlist_head bp_list; }; #endif struct { /* amd_iommu */ u8 iommu_bank; u8 iommu_cntr; u16 padding; u64 conf; u64 conf1; }; }; /* * If the event is a per task event, this will point to the task in * question. See the comment in perf_event_alloc(). */ struct task_struct *target; /* * PMU would store hardware filter configuration * here. */ void *addr_filters; /* Last sync'ed generation of filters */ unsigned long addr_filters_gen; /* * hw_perf_event::state flags; used to track the PERF_EF_* state. */ /* the counter is stopped */ #define PERF_HES_STOPPED 0x01 /* event->count up-to-date */ #define PERF_HES_UPTODATE 0x02 #define PERF_HES_ARCH 0x04 int state; /* * The last observed hardware counter value, updated with a * local64_cmpxchg() such that pmu::read() can be called nested. */ local64_t prev_count; /* * The period to start the next sample with. */ u64 sample_period; union { struct { /* Sampling */ /* * The period we started this sample with. */ u64 last_period; /* * However much is left of the current period; * note that this is a full 64bit value and * allows for generation of periods longer * than hardware might allow. */ local64_t period_left; }; struct { /* Topdown events counting for context switch */ u64 saved_metric; u64 saved_slots; }; }; /* * State for throttling the event, see __perf_event_overflow() and * perf_adjust_freq_unthr_context(). */ u64 interrupts_seq; u64 interrupts; /* * State for freq target events, see __perf_event_overflow() and * perf_adjust_freq_unthr_context(). */ u64 freq_time_stamp; u64 freq_count_stamp; #endif /* CONFIG_PERF_EVENTS */ }; struct perf_event; struct perf_event_pmu_context; /* * Common implementation detail of pmu::{start,commit,cancel}_txn */ /* txn to add/schedule event on PMU */ #define PERF_PMU_TXN_ADD 0x1 /* txn to read event group from PMU */ #define PERF_PMU_TXN_READ 0x2 /** * pmu::capabilities flags */ #define PERF_PMU_CAP_NO_INTERRUPT 0x0001 #define PERF_PMU_CAP_NO_NMI 0x0002 #define PERF_PMU_CAP_AUX_NO_SG 0x0004 #define PERF_PMU_CAP_EXTENDED_REGS 0x0008 #define PERF_PMU_CAP_EXCLUSIVE 0x0010 #define PERF_PMU_CAP_ITRACE 0x0020 #define PERF_PMU_CAP_NO_EXCLUDE 0x0040 #define PERF_PMU_CAP_AUX_OUTPUT 0x0080 #define PERF_PMU_CAP_EXTENDED_HW_TYPE 0x0100 #define PERF_PMU_CAP_AUX_PAUSE 0x0200 #define PERF_PMU_CAP_AUX_PREFER_LARGE 0x0400 /** * pmu::scope */ enum perf_pmu_scope { PERF_PMU_SCOPE_NONE = 0, PERF_PMU_SCOPE_CORE, PERF_PMU_SCOPE_DIE, PERF_PMU_SCOPE_CLUSTER, PERF_PMU_SCOPE_PKG, PERF_PMU_SCOPE_SYS_WIDE, PERF_PMU_MAX_SCOPE, }; struct perf_output_handle; #define PMU_NULL_DEV ((void *)(~0UL)) /** * struct pmu - generic performance monitoring unit */ struct pmu { struct list_head entry; spinlock_t events_lock; struct list_head events; struct module *module; struct device *dev; struct device *parent; const struct attribute_group **attr_groups; const struct attribute_group **attr_update; const char *name; int type; /* * various common per-pmu feature flags */ int capabilities; /* * PMU scope */ unsigned int scope; struct perf_cpu_pmu_context * __percpu *cpu_pmu_context; atomic_t exclusive_cnt; /* < 0: cpu; > 0: tsk */ int task_ctx_nr; int hrtimer_interval_ms; /* number of address filters this PMU can do */ unsigned int nr_addr_filters; /* * Fully disable/enable this PMU, can be used to protect from the PMI * as well as for lazy/batch writing of the MSRs. */ void (*pmu_enable) (struct pmu *pmu); /* optional */ void (*pmu_disable) (struct pmu *pmu); /* optional */ /* * Try and initialize the event for this PMU. * * Returns: * -ENOENT -- @event is not for this PMU * * -ENODEV -- @event is for this PMU but PMU not present * -EBUSY -- @event is for this PMU but PMU temporarily unavailable * -EINVAL -- @event is for this PMU but @event is not valid * -EOPNOTSUPP -- @event is for this PMU, @event is valid, but not supported * -EACCES -- @event is for this PMU, @event is valid, but no privileges * * 0 -- @event is for this PMU and valid * * Other error return values are allowed. */ int (*event_init) (struct perf_event *event); /* * Notification that the event was mapped or unmapped. Called * in the context of the mapping task. */ void (*event_mapped) (struct perf_event *event, struct mm_struct *mm); /* optional */ void (*event_unmapped) (struct perf_event *event, struct mm_struct *mm); /* optional */ /* * Flags for ->add()/->del()/ ->start()/->stop(). There are * matching hw_perf_event::state flags. */ /* start the counter when adding */ #define PERF_EF_START 0x01 /* reload the counter when starting */ #define PERF_EF_RELOAD 0x02 /* update the counter when stopping */ #define PERF_EF_UPDATE 0x04 /* AUX area event, pause tracing */ #define PERF_EF_PAUSE 0x08 /* AUX area event, resume tracing */ #define PERF_EF_RESUME 0x10 /* * Adds/Removes a counter to/from the PMU, can be done inside a * transaction, see the ->*_txn() methods. * * The add/del callbacks will reserve all hardware resources required * to service the event, this includes any counter constraint * scheduling etc. * * Called with IRQs disabled and the PMU disabled on the CPU the event * is on. * * ->add() called without PERF_EF_START should result in the same state * as ->add() followed by ->stop(). * * ->del() must always PERF_EF_UPDATE stop an event. If it calls * ->stop() that must deal with already being stopped without * PERF_EF_UPDATE. */ int (*add) (struct perf_event *event, int flags); void (*del) (struct perf_event *event, int flags); /* * Starts/Stops a counter present on the PMU. * * The PMI handler should stop the counter when perf_event_overflow() * returns !0. ->start() will be used to continue. * * Also used to change the sample period. * * Called with IRQs disabled and the PMU disabled on the CPU the event * is on -- will be called from NMI context with the PMU generates * NMIs. * * ->stop() with PERF_EF_UPDATE will read the counter and update * period/count values like ->read() would. * * ->start() with PERF_EF_RELOAD will reprogram the counter * value, must be preceded by a ->stop() with PERF_EF_UPDATE. * * ->stop() with PERF_EF_PAUSE will stop as simply as possible. Will not * overlap another ->stop() with PERF_EF_PAUSE nor ->start() with * PERF_EF_RESUME. * * ->start() with PERF_EF_RESUME will start as simply as possible but * only if the counter is not otherwise stopped. Will not overlap * another ->start() with PERF_EF_RESUME nor ->stop() with * PERF_EF_PAUSE. * * Notably, PERF_EF_PAUSE/PERF_EF_RESUME *can* be concurrent with other * ->stop()/->start() invocations, just not itself. */ void (*start) (struct perf_event *event, int flags); void (*stop) (struct perf_event *event, int flags); /* * Updates the counter value of the event. * * For sampling capable PMUs this will also update the software period * hw_perf_event::period_left field. */ void (*read) (struct perf_event *event); /* * Group events scheduling is treated as a transaction, add * group events as a whole and perform one schedulability test. * If the test fails, roll back the whole group * * Start the transaction, after this ->add() doesn't need to * do schedulability tests. * * Optional. */ void (*start_txn) (struct pmu *pmu, unsigned int txn_flags); /* * If ->start_txn() disabled the ->add() schedulability test * then ->commit_txn() is required to perform one. On success * the transaction is closed. On error the transaction is kept * open until ->cancel_txn() is called. * * Optional. */ int (*commit_txn) (struct pmu *pmu); /* * Will cancel the transaction, assumes ->del() is called * for each successful ->add() during the transaction. * * Optional. */ void (*cancel_txn) (struct pmu *pmu); /* * Will return the value for perf_event_mmap_page::index for this event, * if no implementation is provided it will default to 0 (see * perf_event_idx_default). */ int (*event_idx) (struct perf_event *event); /*optional */ /* * context-switches callback */ void (*sched_task) (struct perf_event_pmu_context *pmu_ctx, struct task_struct *task, bool sched_in); /* * Kmem cache of PMU specific data */ struct kmem_cache *task_ctx_cache; /* * Set up pmu-private data structures for an AUX area */ void *(*setup_aux) (struct perf_event *event, void **pages, int nr_pages, bool overwrite); /* optional */ /* * Free pmu-private AUX data structures */ void (*free_aux) (void *aux); /* optional */ /* * Take a snapshot of the AUX buffer without touching the event * state, so that preempting ->start()/->stop() callbacks does * not interfere with their logic. Called in PMI context. * * Returns the size of AUX data copied to the output handle. * * Optional. */ long (*snapshot_aux) (struct perf_event *event, struct perf_output_handle *handle, unsigned long size); /* * Validate address range filters: make sure the HW supports the * requested configuration and number of filters; return 0 if the * supplied filters are valid, -errno otherwise. * * Runs in the context of the ioctl()ing process and is not serialized * with the rest of the PMU callbacks. */ int (*addr_filters_validate) (struct list_head *filters); /* optional */ /* * Synchronize address range filter configuration: * translate hw-agnostic filters into hardware configuration in * event::hw::addr_filters. * * Runs as a part of filter sync sequence that is done in ->start() * callback by calling perf_event_addr_filters_sync(). * * May (and should) traverse event::addr_filters::list, for which its * caller provides necessary serialization. */ void (*addr_filters_sync) (struct perf_event *event); /* optional */ /* * Check if event can be used for aux_output purposes for * events of this PMU. * * Runs from perf_event_open(). Should return 0 for "no match" * or non-zero for "match". */ int (*aux_output_match) (struct perf_event *event); /* optional */ /* * Skip programming this PMU on the given CPU. Typically needed for * big.LITTLE things. */ bool (*filter) (struct pmu *pmu, int cpu); /* optional */ /* * Check period value for PERF_EVENT_IOC_PERIOD ioctl. */ int (*check_period) (struct perf_event *event, u64 value); /* optional */ }; enum perf_addr_filter_action_t { PERF_ADDR_FILTER_ACTION_STOP = 0, PERF_ADDR_FILTER_ACTION_START, PERF_ADDR_FILTER_ACTION_FILTER, }; /** * struct perf_addr_filter - address range filter definition * @entry: event's filter list linkage * @path: object file's path for file-based filters * @offset: filter range offset * @size: filter range size (size==0 means single address trigger) * @action: filter/start/stop * * This is a hardware-agnostic filter configuration as specified by the user. */ struct perf_addr_filter { struct list_head entry; struct path path; unsigned long offset; unsigned long size; enum perf_addr_filter_action_t action; }; /** * struct perf_addr_filters_head - container for address range filters * @list: list of filters for this event * @lock: spinlock that serializes accesses to the @list and event's * (and its children's) filter generations. * @nr_file_filters: number of file-based filters * * A child event will use parent's @list (and therefore @lock), so they are * bundled together; see perf_event_addr_filters(). */ struct perf_addr_filters_head { struct list_head list; raw_spinlock_t lock; unsigned int nr_file_filters; }; struct perf_addr_filter_range { unsigned long start; unsigned long size; }; /* * The normal states are: * * ACTIVE --. * ^ | * | | * sched_{in,out}() | * | | * v | * ,---> INACTIVE --+ <-. * | | | * | {dis,en}able() * sched_in() | | * | OFF <--' --+ * | | * `---> ERROR ------' * * That is: * * sched_in: INACTIVE -> {ACTIVE,ERROR} * sched_out: ACTIVE -> INACTIVE * disable: {ACTIVE,INACTIVE} -> OFF * enable: {OFF,ERROR} -> INACTIVE * * Where {OFF,ERROR} are disabled states. * * Then we have the {EXIT,REVOKED,DEAD} states which are various shades of * defunct events: * * - EXIT means task that the even was assigned to died, but child events * still live, and further children can still be created. But the event * itself will never be active again. It can only transition to * {REVOKED,DEAD}; * * - REVOKED means the PMU the event was associated with is gone; all * functionality is stopped but the event is still alive. Can only * transition to DEAD; * * - DEAD event really is DYING tearing down state and freeing bits. * */ enum perf_event_state { PERF_EVENT_STATE_DEAD = -5, PERF_EVENT_STATE_REVOKED = -4, /* pmu gone, must not touch */ PERF_EVENT_STATE_EXIT = -3, /* task died, still inherit */ PERF_EVENT_STATE_ERROR = -2, /* scheduling error, can enable */ PERF_EVENT_STATE_OFF = -1, PERF_EVENT_STATE_INACTIVE = 0, PERF_EVENT_STATE_ACTIVE = 1, }; struct file; struct perf_sample_data; typedef void (*perf_overflow_handler_t)(struct perf_event *, struct perf_sample_data *, struct pt_regs *regs); /* * Event capabilities. For event_caps and groups caps. * * PERF_EV_CAP_SOFTWARE: Is a software event. * PERF_EV_CAP_READ_ACTIVE_PKG: A CPU event (or cgroup event) that can be read * from any CPU in the package where it is active. * PERF_EV_CAP_SIBLING: An event with this flag must be a group sibling and * cannot be a group leader. If an event with this flag is detached from the * group it is scheduled out and moved into an unrecoverable ERROR state. * PERF_EV_CAP_READ_SCOPE: A CPU event that can be read from any CPU of the * PMU scope where it is active. */ #define PERF_EV_CAP_SOFTWARE BIT(0) #define PERF_EV_CAP_READ_ACTIVE_PKG BIT(1) #define PERF_EV_CAP_SIBLING BIT(2) #define PERF_EV_CAP_READ_SCOPE BIT(3) #define SWEVENT_HLIST_BITS 8 #define SWEVENT_HLIST_SIZE (1 << SWEVENT_HLIST_BITS) struct swevent_hlist { struct hlist_head heads[SWEVENT_HLIST_SIZE]; struct rcu_head rcu_head; }; #define PERF_ATTACH_CONTEXT 0x0001 #define PERF_ATTACH_GROUP 0x0002 #define PERF_ATTACH_TASK 0x0004 #define PERF_ATTACH_TASK_DATA 0x0008 #define PERF_ATTACH_GLOBAL_DATA 0x0010 #define PERF_ATTACH_SCHED_CB 0x0020 #define PERF_ATTACH_CHILD 0x0040 #define PERF_ATTACH_EXCLUSIVE 0x0080 #define PERF_ATTACH_CALLCHAIN 0x0100 #define PERF_ATTACH_ITRACE 0x0200 struct bpf_prog; struct perf_cgroup; struct perf_buffer; struct pmu_event_list { raw_spinlock_t lock; struct list_head list; }; /* * event->sibling_list is modified whole holding both ctx->lock and ctx->mutex * as such iteration must hold either lock. However, since ctx->lock is an IRQ * safe lock, and is only held by the CPU doing the modification, having IRQs * disabled is sufficient since it will hold-off the IPIs. */ #ifdef CONFIG_PROVE_LOCKING # define lockdep_assert_event_ctx(event) \ WARN_ON_ONCE(__lockdep_enabled && \ (this_cpu_read(hardirqs_enabled) && \ lockdep_is_held(&(event)->ctx->mutex) != LOCK_STATE_HELD)) #else # define lockdep_assert_event_ctx(event) #endif #define for_each_sibling_event(sibling, event) \ lockdep_assert_event_ctx(event); \ if ((event)->group_leader == (event)) \ list_for_each_entry((sibling), &(event)->sibling_list, sibling_list) /** * struct perf_event - performance event kernel representation: */ struct perf_event { #ifdef CONFIG_PERF_EVENTS /* * entry onto perf_event_context::event_list; * modifications require ctx->lock * RCU safe iterations. */ struct list_head event_entry; /* * Locked for modification by both ctx->mutex and ctx->lock; holding * either sufficies for read. */ struct list_head sibling_list; struct list_head active_list; /* * Node on the pinned or flexible tree located at the event context; */ struct rb_node group_node; u64 group_index; /* * We need storage to track the entries in perf_pmu_migrate_context; we * cannot use the event_entry because of RCU and we want to keep the * group in tact which avoids us using the other two entries. */ struct list_head migrate_entry; struct hlist_node hlist_entry; struct list_head active_entry; int nr_siblings; /* Not serialized. Only written during event initialization. */ int event_caps; /* The cumulative AND of all event_caps for events in this group. */ int group_caps; unsigned int group_generation; struct perf_event *group_leader; /* * event->pmu will always point to pmu in which this event belongs. * Whereas event->pmu_ctx->pmu may point to other pmu when group of * different pmu events is created. */ struct pmu *pmu; void *pmu_private; enum perf_event_state state; unsigned int attach_state; local64_t count; atomic64_t child_count; /* * These are the total time in nanoseconds that the event * has been enabled (i.e. eligible to run, and the task has * been scheduled in, if this is a per-task event) * and running (scheduled onto the CPU), respectively. */ u64 total_time_enabled; u64 total_time_running; u64 tstamp; struct perf_event_attr attr; u16 header_size; u16 id_header_size; u16 read_size; struct hw_perf_event hw; struct perf_event_context *ctx; /* * event->pmu_ctx points to perf_event_pmu_context in which the event * is added. This pmu_ctx can be of other pmu for sw event when that * sw event is part of a group which also contains non-sw events. */ struct perf_event_pmu_context *pmu_ctx; atomic_long_t refcount; /* * These accumulate total time (in nanoseconds) that children * events have been enabled and running, respectively. */ atomic64_t child_total_time_enabled; atomic64_t child_total_time_running; /* * Protect attach/detach and child_list: */ struct mutex child_mutex; struct list_head child_list; struct perf_event *parent; int oncpu; int cpu; struct list_head owner_entry; struct task_struct *owner; /* mmap bits */ struct mutex mmap_mutex; refcount_t mmap_count; struct perf_buffer *rb; struct list_head rb_entry; unsigned long rcu_batches; int rcu_pending; /* poll related */ wait_queue_head_t waitq; struct fasync_struct *fasync; /* delayed work for NMIs and such */ unsigned int pending_wakeup; unsigned int pending_kill; unsigned int pending_disable; unsigned long pending_addr; /* SIGTRAP */ struct irq_work pending_irq; struct irq_work pending_disable_irq; struct callback_head pending_task; unsigned int pending_work; atomic_t event_limit; /* address range filters */ struct perf_addr_filters_head addr_filters; /* vma address array for file-based filders */ struct perf_addr_filter_range *addr_filter_ranges; unsigned long addr_filters_gen; /* for aux_output events */ struct perf_event *aux_event; void (*destroy)(struct perf_event *); struct rcu_head rcu_head; struct pid_namespace *ns; u64 id; atomic64_t lost_samples; u64 (*clock)(void); perf_overflow_handler_t overflow_handler; void *overflow_handler_context; struct bpf_prog *prog; u64 bpf_cookie; #ifdef CONFIG_EVENT_TRACING struct trace_event_call *tp_event; struct event_filter *filter; # ifdef CONFIG_FUNCTION_TRACER struct ftrace_ops ftrace_ops; # endif #endif #ifdef CONFIG_CGROUP_PERF struct perf_cgroup *cgrp; /* cgroup event is attach to */ #endif #ifdef CONFIG_SECURITY void *security; #endif struct list_head sb_list; struct list_head pmu_list; /* * Certain events gets forwarded to another pmu internally by over- * writing kernel copy of event->attr.type without user being aware * of it. event->orig_type contains original 'type' requested by * user. */ u32 orig_type; #endif /* CONFIG_PERF_EVENTS */ }; /* * ,-----------------------[1:n]------------------------. * V V * perf_event_context <-[1:n]-> perf_event_pmu_context <-[1:n]- perf_event * | | * `--[n:1]-> pmu <-[1:n]--' * * * struct perf_event_pmu_context lifetime is refcount based and RCU freed * (similar to perf_event_context). Locking is as if it were a member of * perf_event_context; specifically: * * modification, both: ctx->mutex && ctx->lock * reading, either: ctx->mutex || ctx->lock * * There is one exception to this; namely put_pmu_ctx() isn't always called * with ctx->mutex held; this means that as long as we can guarantee the epc * has events the above rules hold. * * Specificially, sys_perf_event_open()'s group_leader case depends on * ctx->mutex pinning the configuration. Since we hold a reference on * group_leader (through the filedesc) it can't go away, therefore it's * associated pmu_ctx must exist and cannot change due to ctx->mutex. * * perf_event holds a refcount on perf_event_context * perf_event holds a refcount on perf_event_pmu_context */ struct perf_event_pmu_context { struct pmu *pmu; struct perf_event_context *ctx; struct list_head pmu_ctx_entry; struct list_head pinned_active; struct list_head flexible_active; /* Used to identify the per-cpu perf_event_pmu_context */ unsigned int embedded : 1; unsigned int nr_events; unsigned int nr_cgroups; unsigned int nr_freq; atomic_t refcount; /* event <-> epc */ struct rcu_head rcu_head; /* * Set when one or more (plausibly active) event can't be scheduled * due to pmu overcommit or pmu constraints, except tolerant to * events not necessary to be active due to scheduling constraints, * such as cgroups. */ int rotate_necessary; }; static inline bool perf_pmu_ctx_is_active(struct perf_event_pmu_context *epc) { return !list_empty(&epc->flexible_active) || !list_empty(&epc->pinned_active); } struct perf_event_groups { struct rb_root tree; u64 index; }; /** * struct perf_event_context - event context structure * * Used as a container for task events and CPU events as well: */ struct perf_event_context { /* * Protect the states of the events in the list, * nr_active, and the list: */ raw_spinlock_t lock; /* * Protect the list of events. Locking either mutex or lock * is sufficient to ensure the list doesn't change; to change * the list you need to lock both the mutex and the spinlock. */ struct mutex mutex; struct list_head pmu_ctx_list; struct perf_event_groups pinned_groups; struct perf_event_groups flexible_groups; struct list_head event_list; int nr_events; int nr_user; int is_active; int nr_stat; int nr_freq; int rotate_disable; refcount_t refcount; /* event <-> ctx */ struct task_struct *task; /* * Context clock, runs when context enabled. */ u64 time; u64 timestamp; u64 timeoffset; /* * These fields let us detect when two contexts have both * been cloned (inherited) from a common ancestor. */ struct perf_event_context *parent_ctx; u64 parent_gen; u64 generation; int pin_count; #ifdef CONFIG_CGROUP_PERF int nr_cgroups; /* cgroup evts */ #endif struct rcu_head rcu_head; /* * The count of events for which using the switch-out fast path * should be avoided. * * Sum (event->pending_work + events with * (attr->inherit && (attr->sample_type & PERF_SAMPLE_READ))) * * The SIGTRAP is targeted at ctx->task, as such it won't do changing * that until the signal is delivered. */ local_t nr_no_switch_fast; }; /** * struct perf_ctx_data - PMU specific data for a task * @rcu_head: To avoid the race on free PMU specific data * @refcount: To track users * @global: To track system-wide users * @ctx_cache: Kmem cache of PMU specific data * @data: PMU specific data * * Currently, the struct is only used in Intel LBR call stack mode to * save/restore the call stack of a task on context switches. * * The rcu_head is used to prevent the race on free the data. * The data only be allocated when Intel LBR call stack mode is enabled. * The data will be freed when the mode is disabled. * The content of the data will only be accessed in context switch, which * should be protected by rcu_read_lock(). * * Because of the alignment requirement of Intel Arch LBR, the Kmem cache * is used to allocate the PMU specific data. The ctx_cache is to track * the Kmem cache. * * Careful: Struct perf_ctx_data is added as a pointer in struct task_struct. * When system-wide Intel LBR call stack mode is enabled, a buffer with * constant size will be allocated for each task. * Also, system memory consumption can further grow when the size of * struct perf_ctx_data enlarges. */ struct perf_ctx_data { struct rcu_head rcu_head; refcount_t refcount; int global; struct kmem_cache *ctx_cache; void *data; }; struct perf_cpu_pmu_context { struct perf_event_pmu_context epc; struct perf_event_pmu_context *task_epc; struct list_head sched_cb_entry; int sched_cb_usage; int active_oncpu; int exclusive; int pmu_disable_count; raw_spinlock_t hrtimer_lock; struct hrtimer hrtimer; ktime_t hrtimer_interval; unsigned int hrtimer_active; }; /** * struct perf_event_cpu_context - per cpu event context structure */ struct perf_cpu_context { struct perf_event_context ctx; struct perf_event_context *task_ctx; int online; #ifdef CONFIG_CGROUP_PERF struct perf_cgroup *cgrp; #endif /* * Per-CPU storage for iterators used in visit_groups_merge. The default * storage is of size 2 to hold the CPU and any CPU event iterators. */ int heap_size; struct perf_event **heap; struct perf_event *heap_default[2]; }; struct perf_output_handle { struct perf_event *event; struct perf_buffer *rb; unsigned long wakeup; unsigned long size; union { u64 flags; /* perf_output*() */ u64 aux_flags; /* perf_aux_output*() */ struct { u64 skip_read : 1; }; }; union { void *addr; unsigned long head; }; int page; }; struct bpf_perf_event_data_kern { bpf_user_pt_regs_t *regs; struct perf_sample_data *data; struct perf_event *event; }; #ifdef CONFIG_CGROUP_PERF /* * perf_cgroup_info keeps track of time_enabled for a cgroup. * This is a per-cpu dynamically allocated data structure. */ struct perf_cgroup_info { u64 time; u64 timestamp; u64 timeoffset; int active; }; struct perf_cgroup { struct cgroup_subsys_state css; struct perf_cgroup_info __percpu *info; }; /* * Must ensure cgroup is pinned (css_get) before calling * this function. In other words, we cannot call this function * if there is no cgroup event for the current CPU context. */ static inline struct perf_cgroup * perf_cgroup_from_task(struct task_struct *task, struct perf_event_context *ctx) { return container_of(task_css_check(task, perf_event_cgrp_id, ctx ? lockdep_is_held(&ctx->lock) : true), struct perf_cgroup, css); } #endif /* CONFIG_CGROUP_PERF */ #ifdef CONFIG_PERF_EVENTS extern struct perf_event_context *perf_cpu_task_ctx(void); extern void *perf_aux_output_begin(struct perf_output_handle *handle, struct perf_event *event); extern void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size); extern int perf_aux_output_skip(struct perf_output_handle *handle, unsigned long size); extern void *perf_get_aux(struct perf_output_handle *handle); extern void perf_aux_output_flag(struct perf_output_handle *handle, u64 flags); extern void perf_event_itrace_started(struct perf_event *event); extern int perf_pmu_register(struct pmu *pmu, const char *name, int type); extern int perf_pmu_unregister(struct pmu *pmu); extern void __perf_event_task_sched_in(struct task_struct *prev, struct task_struct *task); extern void __perf_event_task_sched_out(struct task_struct *prev, struct task_struct *next); extern int perf_event_init_task(struct task_struct *child, u64 clone_flags); extern void perf_event_exit_task(struct task_struct *child); extern void perf_event_free_task(struct task_struct *task); extern void perf_event_delayed_put(struct task_struct *task); extern struct file *perf_event_get(unsigned int fd); extern const struct perf_event *perf_get_event(struct file *file); extern const struct perf_event_attr *perf_event_attrs(struct perf_event *event); extern void perf_event_print_debug(void); extern void perf_pmu_disable(struct pmu *pmu); extern void perf_pmu_enable(struct pmu *pmu); extern void perf_sched_cb_dec(struct pmu *pmu); extern void perf_sched_cb_inc(struct pmu *pmu); extern int perf_event_task_disable(void); extern int perf_event_task_enable(void); extern void perf_pmu_resched(struct pmu *pmu); extern int perf_event_refresh(struct perf_event *event, int refresh); extern void perf_event_update_userpage(struct perf_event *event); extern int perf_event_release_kernel(struct perf_event *event); extern struct perf_event * perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu, struct task_struct *task, perf_overflow_handler_t callback, void *context); extern void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu); extern int perf_event_read_local(struct perf_event *event, u64 *value, u64 *enabled, u64 *running); extern u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running); extern struct perf_callchain_entry *perf_callchain(struct perf_event *event, struct pt_regs *regs); static inline bool branch_sample_no_flags(const struct perf_event *event) { return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_NO_FLAGS; } static inline bool branch_sample_no_cycles(const struct perf_event *event) { return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_NO_CYCLES; } static inline bool branch_sample_type(const struct perf_event *event) { return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_TYPE_SAVE; } static inline bool branch_sample_hw_index(const struct perf_event *event) { return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX; } static inline bool branch_sample_priv(const struct perf_event *event) { return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_PRIV_SAVE; } static inline bool branch_sample_counters(const struct perf_event *event) { return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS; } static inline bool branch_sample_call_stack(const struct perf_event *event) { return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK; } struct perf_sample_data { /* * Fields set by perf_sample_data_init() unconditionally, * group so as to minimize the cachelines touched. */ u64 sample_flags; u64 period; u64 dyn_size; /* * Fields commonly set by __perf_event_header__init_id(), * group so as to minimize the cachelines touched. */ u64 type; struct { u32 pid; u32 tid; } tid_entry; u64 time; u64 id; struct { u32 cpu; u32 reserved; } cpu_entry; /* * The other fields, optionally {set,used} by * perf_{prepare,output}_sample(). */ u64 ip; struct perf_callchain_entry *callchain; struct perf_raw_record *raw; struct perf_branch_stack *br_stack; u64 *br_stack_cntr; union perf_sample_weight weight; union perf_mem_data_src data_src; u64 txn; struct perf_regs regs_user; struct perf_regs regs_intr; u64 stack_user_size; u64 stream_id; u64 cgroup; u64 addr; u64 phys_addr; u64 data_page_size; u64 code_page_size; u64 aux_size; } ____cacheline_aligned; /* default value for data source */ #define PERF_MEM_NA (PERF_MEM_S(OP, NA) |\ PERF_MEM_S(LVL, NA) |\ PERF_MEM_S(SNOOP, NA) |\ PERF_MEM_S(LOCK, NA) |\ PERF_MEM_S(TLB, NA) |\ PERF_MEM_S(LVLNUM, NA)) static inline void perf_sample_data_init(struct perf_sample_data *data, u64 addr, u64 period) { /* remaining struct members initialized in perf_prepare_sample() */ data->sample_flags = PERF_SAMPLE_PERIOD; data->period = period; data->dyn_size = 0; if (addr) { data->addr = addr; data->sample_flags |= PERF_SAMPLE_ADDR; } } static inline void perf_sample_save_callchain(struct perf_sample_data *data, struct perf_event *event, struct pt_regs *regs) { int size = 1; if (!(event->attr.sample_type & PERF_SAMPLE_CALLCHAIN)) return; if (WARN_ON_ONCE(data->sample_flags & PERF_SAMPLE_CALLCHAIN)) return; data->callchain = perf_callchain(event, regs); size += data->callchain->nr; data->dyn_size += size * sizeof(u64); data->sample_flags |= PERF_SAMPLE_CALLCHAIN; } static inline void perf_sample_save_raw_data(struct perf_sample_data *data, struct perf_event *event, struct perf_raw_record *raw) { struct perf_raw_frag *frag = &raw->frag; u32 sum = 0; int size; if (!(event->attr.sample_type & PERF_SAMPLE_RAW)) return; if (WARN_ON_ONCE(data->sample_flags & PERF_SAMPLE_RAW)) return; do { sum += frag->size; if (perf_raw_frag_last(frag)) break; frag = frag->next; } while (1); size = round_up(sum + sizeof(u32), sizeof(u64)); raw->size = size - sizeof(u32); frag->pad = raw->size - sum; data->raw = raw; data->dyn_size += size; data->sample_flags |= PERF_SAMPLE_RAW; } static inline bool has_branch_stack(struct perf_event *event) { return event->attr.sample_type & PERF_SAMPLE_BRANCH_STACK; } static inline void perf_sample_save_brstack(struct perf_sample_data *data, struct perf_event *event, struct perf_branch_stack *brs, u64 *brs_cntr) { int size = sizeof(u64); /* nr */ if (!has_branch_stack(event)) return; if (WARN_ON_ONCE(data->sample_flags & PERF_SAMPLE_BRANCH_STACK)) return; if (branch_sample_hw_index(event)) size += sizeof(u64); brs->nr = min_t(u16, event->attr.sample_max_stack, brs->nr); size += brs->nr * sizeof(struct perf_branch_entry); /* * The extension space for counters is appended after the * struct perf_branch_stack. It is used to store the occurrences * of events of each branch. */ if (brs_cntr) size += brs->nr * sizeof(u64); data->br_stack = brs; data->br_stack_cntr = brs_cntr; data->dyn_size += size; data->sample_flags |= PERF_SAMPLE_BRANCH_STACK; } static inline u32 perf_sample_data_size(struct perf_sample_data *data, struct perf_event *event) { u32 size = sizeof(struct perf_event_header); size += event->header_size + event->id_header_size; size += data->dyn_size; return size; } /* * Clear all bitfields in the perf_branch_entry. * The to and from fields are not cleared because they are * systematically modified by caller. */ static inline void perf_clear_branch_entry_bitfields(struct perf_branch_entry *br) { br->mispred = 0; br->predicted = 0; br->in_tx = 0; br->abort = 0; br->cycles = 0; br->type = 0; br->spec = PERF_BR_SPEC_NA; br->reserved = 0; } extern void perf_output_sample(struct perf_output_handle *handle, struct perf_event_header *header, struct perf_sample_data *data, struct perf_event *event); extern void perf_prepare_sample(struct perf_sample_data *data, struct perf_event *event, struct pt_regs *regs); extern void perf_prepare_header(struct perf_event_header *header, struct perf_sample_data *data, struct perf_event *event, struct pt_regs *regs); extern int perf_event_overflow(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); extern void perf_event_output_forward(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); extern void perf_event_output_backward(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); extern int perf_event_output(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); static inline bool is_default_overflow_handler(struct perf_event *event) { perf_overflow_handler_t overflow_handler = event->overflow_handler; if (likely(overflow_handler == perf_event_output_forward)) return true; if (unlikely(overflow_handler == perf_event_output_backward)) return true; return false; } extern void perf_event_header__init_id(struct perf_event_header *header, struct perf_sample_data *data, struct perf_event *event); extern void perf_event__output_id_sample(struct perf_event *event, struct perf_output_handle *handle, struct perf_sample_data *sample); extern void perf_log_lost_samples(struct perf_event *event, u64 lost); static inline bool event_has_any_exclude_flag(struct perf_event *event) { struct perf_event_attr *attr = &event->attr; return attr->exclude_idle || attr->exclude_user || attr->exclude_kernel || attr->exclude_hv || attr->exclude_guest || attr->exclude_host; } static inline bool is_sampling_event(struct perf_event *event) { return event->attr.sample_period != 0; } /* * Return 1 for a software event, 0 for a hardware event */ static inline int is_software_event(struct perf_event *event) { return event->event_caps & PERF_EV_CAP_SOFTWARE; } /* * Return 1 for event in sw context, 0 for event in hw context */ static inline int in_software_context(struct perf_event *event) { return event->pmu_ctx->pmu->task_ctx_nr == perf_sw_context; } static inline int is_exclusive_pmu(struct pmu *pmu) { return pmu->capabilities & PERF_PMU_CAP_EXCLUSIVE; } extern struct static_key perf_swevent_enabled[PERF_COUNT_SW_MAX]; extern void ___perf_sw_event(u32, u64, struct pt_regs *, u64); extern void __perf_sw_event(u32, u64, struct pt_regs *, u64); #ifndef perf_arch_fetch_caller_regs static inline void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip) { } #endif /* * When generating a perf sample in-line, instead of from an interrupt / * exception, we lack a pt_regs. This is typically used from software events * like: SW_CONTEXT_SWITCHES, SW_MIGRATIONS and the tie-in with tracepoints. * * We typically don't need a full set, but (for x86) do require: * - ip for PERF_SAMPLE_IP * - cs for user_mode() tests * - sp for PERF_SAMPLE_CALLCHAIN * - eflags for MISC bits and CALLCHAIN (see: perf_hw_regs()) * * NOTE: assumes @regs is otherwise already 0 filled; this is important for * things like PERF_SAMPLE_REGS_INTR. */ static inline void perf_fetch_caller_regs(struct pt_regs *regs) { perf_arch_fetch_caller_regs(regs, CALLER_ADDR0); } static __always_inline void perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { if (static_key_false(&perf_swevent_enabled[event_id])) __perf_sw_event(event_id, nr, regs, addr); } DECLARE_PER_CPU(struct pt_regs, __perf_regs[4]); /* * 'Special' version for the scheduler, it hard assumes no recursion, * which is guaranteed by us not actually scheduling inside other swevents * because those disable preemption. */ static __always_inline void __perf_sw_event_sched(u32 event_id, u64 nr, u64 addr) { struct pt_regs *regs = this_cpu_ptr(&__perf_regs[0]); perf_fetch_caller_regs(regs); ___perf_sw_event(event_id, nr, regs, addr); } extern struct static_key_false perf_sched_events; static __always_inline bool __perf_sw_enabled(int swevt) { return static_key_false(&perf_swevent_enabled[swevt]); } static inline void perf_event_task_migrate(struct task_struct *task) { if (__perf_sw_enabled(PERF_COUNT_SW_CPU_MIGRATIONS)) task->sched_migrated = 1; } static inline void perf_event_task_sched_in(struct task_struct *prev, struct task_struct *task) { if (static_branch_unlikely(&perf_sched_events)) __perf_event_task_sched_in(prev, task); if (__perf_sw_enabled(PERF_COUNT_SW_CPU_MIGRATIONS) && task->sched_migrated) { __perf_sw_event_sched(PERF_COUNT_SW_CPU_MIGRATIONS, 1, 0); task->sched_migrated = 0; } } static inline void perf_event_task_sched_out(struct task_struct *prev, struct task_struct *next) { if (__perf_sw_enabled(PERF_COUNT_SW_CONTEXT_SWITCHES)) __perf_sw_event_sched(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 0); #ifdef CONFIG_CGROUP_PERF if (__perf_sw_enabled(PERF_COUNT_SW_CGROUP_SWITCHES) && perf_cgroup_from_task(prev, NULL) != perf_cgroup_from_task(next, NULL)) __perf_sw_event_sched(PERF_COUNT_SW_CGROUP_SWITCHES, 1, 0); #endif if (static_branch_unlikely(&perf_sched_events)) __perf_event_task_sched_out(prev, next); } extern void perf_event_mmap(struct vm_area_struct *vma); extern void perf_event_ksymbol(u16 ksym_type, u64 addr, u32 len, bool unregister, const char *sym); extern void perf_event_bpf_event(struct bpf_prog *prog, enum perf_bpf_event_type type, u16 flags); #define PERF_GUEST_ACTIVE 0x01 #define PERF_GUEST_USER 0x02 struct perf_guest_info_callbacks { unsigned int (*state)(void); unsigned long (*get_ip)(void); unsigned int (*handle_intel_pt_intr)(void); }; #ifdef CONFIG_GUEST_PERF_EVENTS extern struct perf_guest_info_callbacks __rcu *perf_guest_cbs; DECLARE_STATIC_CALL(__perf_guest_state, *perf_guest_cbs->state); DECLARE_STATIC_CALL(__perf_guest_get_ip, *perf_guest_cbs->get_ip); DECLARE_STATIC_CALL(__perf_guest_handle_intel_pt_intr, *perf_guest_cbs->handle_intel_pt_intr); static inline unsigned int perf_guest_state(void) { return static_call(__perf_guest_state)(); } static inline unsigned long perf_guest_get_ip(void) { return static_call(__perf_guest_get_ip)(); } static inline unsigned int perf_guest_handle_intel_pt_intr(void) { return static_call(__perf_guest_handle_intel_pt_intr)(); } extern void perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *cbs); extern void perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks *cbs); #else /* !CONFIG_GUEST_PERF_EVENTS: */ static inline unsigned int perf_guest_state(void) { return 0; } static inline unsigned long perf_guest_get_ip(void) { return 0; } static inline unsigned int perf_guest_handle_intel_pt_intr(void) { return 0; } #endif /* !CONFIG_GUEST_PERF_EVENTS */ extern void perf_event_exec(void); extern void perf_event_comm(struct task_struct *tsk, bool exec); extern void perf_event_namespaces(struct task_struct *tsk); extern void perf_event_fork(struct task_struct *tsk); extern void perf_event_text_poke(const void *addr, const void *old_bytes, size_t old_len, const void *new_bytes, size_t new_len); /* Callchains */ DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry); extern void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs); extern void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs); extern struct perf_callchain_entry * get_perf_callchain(struct pt_regs *regs, bool kernel, bool user, u32 max_stack, bool crosstask, bool add_mark); extern int get_callchain_buffers(int max_stack); extern void put_callchain_buffers(void); extern struct perf_callchain_entry *get_callchain_entry(int *rctx); extern void put_callchain_entry(int rctx); extern int sysctl_perf_event_max_stack; extern int sysctl_perf_event_max_contexts_per_stack; static inline int perf_callchain_store_context(struct perf_callchain_entry_ctx *ctx, u64 ip) { if (ctx->contexts < sysctl_perf_event_max_contexts_per_stack) { struct perf_callchain_entry *entry = ctx->entry; entry->ip[entry->nr++] = ip; ++ctx->contexts; return 0; } else { ctx->contexts_maxed = true; return -1; /* no more room, stop walking the stack */ } } static inline int perf_callchain_store(struct perf_callchain_entry_ctx *ctx, u64 ip) { if (ctx->nr < ctx->max_stack && !ctx->contexts_maxed) { struct perf_callchain_entry *entry = ctx->entry; entry->ip[entry->nr++] = ip; ++ctx->nr; return 0; } else { return -1; /* no more room, stop walking the stack */ } } extern int sysctl_perf_event_paranoid; extern int sysctl_perf_event_sample_rate; extern void perf_sample_event_took(u64 sample_len_ns); /* Access to perf_event_open(2) syscall. */ #define PERF_SECURITY_OPEN 0 /* Finer grained perf_event_open(2) access control. */ #define PERF_SECURITY_CPU 1 #define PERF_SECURITY_KERNEL 2 #define PERF_SECURITY_TRACEPOINT 3 static inline int perf_is_paranoid(void) { return sysctl_perf_event_paranoid > -1; } extern int perf_allow_kernel(void); static inline int perf_allow_cpu(void) { if (sysctl_perf_event_paranoid > 0 && !perfmon_capable()) return -EACCES; return security_perf_event_open(PERF_SECURITY_CPU); } static inline int perf_allow_tracepoint(void) { if (sysctl_perf_event_paranoid > -1 && !perfmon_capable()) return -EPERM; return security_perf_event_open(PERF_SECURITY_TRACEPOINT); } extern int perf_exclude_event(struct perf_event *event, struct pt_regs *regs); extern void perf_event_init(void); extern void perf_tp_event(u16 event_type, u64 count, void *record, int entry_size, struct pt_regs *regs, struct hlist_head *head, int rctx, struct task_struct *task); extern void perf_bp_event(struct perf_event *event, void *data); extern unsigned long perf_misc_flags(struct perf_event *event, struct pt_regs *regs); extern unsigned long perf_instruction_pointer(struct perf_event *event, struct pt_regs *regs); #ifndef perf_arch_misc_flags # define perf_arch_misc_flags(regs) \ (user_mode(regs) ? PERF_RECORD_MISC_USER : PERF_RECORD_MISC_KERNEL) # define perf_arch_instruction_pointer(regs) instruction_pointer(regs) #endif #ifndef perf_arch_bpf_user_pt_regs # define perf_arch_bpf_user_pt_regs(regs) regs #endif #ifndef perf_arch_guest_misc_flags static inline unsigned long perf_arch_guest_misc_flags(struct pt_regs *regs) { unsigned long guest_state = perf_guest_state(); if (!(guest_state & PERF_GUEST_ACTIVE)) return 0; if (guest_state & PERF_GUEST_USER) return PERF_RECORD_MISC_GUEST_USER; else return PERF_RECORD_MISC_GUEST_KERNEL; } # define perf_arch_guest_misc_flags(regs) perf_arch_guest_misc_flags(regs) #endif static inline bool needs_branch_stack(struct perf_event *event) { return event->attr.branch_sample_type != 0; } static inline bool has_aux(struct perf_event *event) { return event->pmu && event->pmu->setup_aux; } static inline bool has_aux_action(struct perf_event *event) { return event->attr.aux_sample_size || event->attr.aux_pause || event->attr.aux_resume; } static inline bool is_write_backward(struct perf_event *event) { return !!event->attr.write_backward; } static inline bool has_addr_filter(struct perf_event *event) { return event->pmu->nr_addr_filters; } /* * An inherited event uses parent's filters */ static inline struct perf_addr_filters_head * perf_event_addr_filters(struct perf_event *event) { struct perf_addr_filters_head *ifh = &event->addr_filters; if (event->parent) ifh = &event->parent->addr_filters; return ifh; } static inline struct fasync_struct **perf_event_fasync(struct perf_event *event) { /* Only the parent has fasync state */ if (event->parent) event = event->parent; return &event->fasync; } extern void perf_event_addr_filters_sync(struct perf_event *event); extern void perf_report_aux_output_id(struct perf_event *event, u64 hw_id); extern int perf_output_begin(struct perf_output_handle *handle, struct perf_sample_data *data, struct perf_event *event, unsigned int size); extern int perf_output_begin_forward(struct perf_output_handle *handle, struct perf_sample_data *data, struct perf_event *event, unsigned int size); extern int perf_output_begin_backward(struct perf_output_handle *handle, struct perf_sample_data *data, struct perf_event *event, unsigned int size); extern void perf_output_end(struct perf_output_handle *handle); extern unsigned int perf_output_copy(struct perf_output_handle *handle, const void *buf, unsigned int len); extern unsigned int perf_output_skip(struct perf_output_handle *handle, unsigned int len); extern long perf_output_copy_aux(struct perf_output_handle *aux_handle, struct perf_output_handle *handle, unsigned long from, unsigned long to); extern int perf_swevent_get_recursion_context(void); extern void perf_swevent_put_recursion_context(int rctx); extern u64 perf_swevent_set_period(struct perf_event *event); extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); extern void perf_event_disable_local(struct perf_event *event); extern void perf_event_disable_inatomic(struct perf_event *event); extern void perf_event_task_tick(void); extern int perf_event_account_interrupt(struct perf_event *event); extern int perf_event_period(struct perf_event *event, u64 value); extern u64 perf_event_pause(struct perf_event *event, bool reset); #else /* !CONFIG_PERF_EVENTS: */ static inline void * perf_aux_output_begin(struct perf_output_handle *handle, struct perf_event *event) { return NULL; } static inline void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size) { } static inline int perf_aux_output_skip(struct perf_output_handle *handle, unsigned long size) { return -EINVAL; } static inline void * perf_get_aux(struct perf_output_handle *handle) { return NULL; } static inline void perf_event_task_migrate(struct task_struct *task) { } static inline void perf_event_task_sched_in(struct task_struct *prev, struct task_struct *task) { } static inline void perf_event_task_sched_out(struct task_struct *prev, struct task_struct *next) { } static inline int perf_event_init_task(struct task_struct *child, u64 clone_flags) { return 0; } static inline void perf_event_exit_task(struct task_struct *child) { } static inline void perf_event_free_task(struct task_struct *task) { } static inline void perf_event_delayed_put(struct task_struct *task) { } static inline struct file *perf_event_get(unsigned int fd) { return ERR_PTR(-EINVAL); } static inline const struct perf_event *perf_get_event(struct file *file) { return ERR_PTR(-EINVAL); } static inline const struct perf_event_attr *perf_event_attrs(struct perf_event *event) { return ERR_PTR(-EINVAL); } static inline int perf_event_read_local(struct perf_event *event, u64 *value, u64 *enabled, u64 *running) { return -EINVAL; } static inline void perf_event_print_debug(void) { } static inline int perf_event_task_disable(void) { return -EINVAL; } static inline int perf_event_task_enable(void) { return -EINVAL; } static inline int perf_event_refresh(struct perf_event *event, int refresh) { return -EINVAL; } static inline void perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { } static inline void perf_bp_event(struct perf_event *event, void *data) { } static inline void perf_event_mmap(struct vm_area_struct *vma) { } typedef int (perf_ksymbol_get_name_f)(char *name, int name_len, void *data); static inline void perf_event_ksymbol(u16 ksym_type, u64 addr, u32 len, bool unregister, const char *sym) { } static inline void perf_event_bpf_event(struct bpf_prog *prog, enum perf_bpf_event_type type, u16 flags) { } static inline void perf_event_exec(void) { } static inline void perf_event_comm(struct task_struct *tsk, bool exec) { } static inline void perf_event_namespaces(struct task_struct *tsk) { } static inline void perf_event_fork(struct task_struct *tsk) { } static inline void perf_event_text_poke(const void *addr, const void *old_bytes, size_t old_len, const void *new_bytes, size_t new_len) { } static inline void perf_event_init(void) { } static inline int perf_swevent_get_recursion_context(void) { return -1; } static inline void perf_swevent_put_recursion_context(int rctx) { } static inline u64 perf_swevent_set_period(struct perf_event *event) { return 0; } static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } static inline int __perf_event_disable(void *info) { return -1; } static inline void perf_event_task_tick(void) { } static inline int perf_event_release_kernel(struct perf_event *event) { return 0; } static inline int perf_event_period(struct perf_event *event, u64 value) { return -EINVAL; } static inline u64 perf_event_pause(struct perf_event *event, bool reset) { return 0; } static inline int perf_exclude_event(struct perf_event *event, struct pt_regs *regs) { return 0; } #endif /* !CONFIG_PERF_EVENTS */ #if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL) extern void perf_restore_debug_store(void); #else static inline void perf_restore_debug_store(void) { } #endif #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x)) struct perf_pmu_events_attr { struct device_attribute attr; u64 id; const char *event_str; }; struct perf_pmu_events_ht_attr { struct device_attribute attr; u64 id; const char *event_str_ht; const char *event_str_noht; }; struct perf_pmu_events_hybrid_attr { struct device_attribute attr; u64 id; const char *event_str; u64 pmu_type; }; struct perf_pmu_format_hybrid_attr { struct device_attribute attr; u64 pmu_type; }; ssize_t perf_event_sysfs_show(struct device *dev, struct device_attribute *attr, char *page); #define PMU_EVENT_ATTR(_name, _var, _id, _show) \ static struct perf_pmu_events_attr _var = { \ .attr = __ATTR(_name, 0444, _show, NULL), \ .id = _id, \ }; #define PMU_EVENT_ATTR_STRING(_name, _var, _str) \ static struct perf_pmu_events_attr _var = { \ .attr = __ATTR(_name, 0444, perf_event_sysfs_show, NULL), \ .id = 0, \ .event_str = _str, \ }; #define PMU_EVENT_ATTR_ID(_name, _show, _id) \ (&((struct perf_pmu_events_attr[]) { \ { .attr = __ATTR(_name, 0444, _show, NULL), \ .id = _id, } \ })[0].attr.attr) #define PMU_FORMAT_ATTR_SHOW(_name, _format) \ static ssize_t \ _name##_show(struct device *dev, \ struct device_attribute *attr, \ char *page) \ { \ BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE); \ return sprintf(page, _format "\n"); \ } \ #define PMU_FORMAT_ATTR(_name, _format) \ PMU_FORMAT_ATTR_SHOW(_name, _format) \ \ static struct device_attribute format_attr_##_name = __ATTR_RO(_name) /* Performance counter hotplug functions */ #ifdef CONFIG_PERF_EVENTS extern int perf_event_init_cpu(unsigned int cpu); extern int perf_event_exit_cpu(unsigned int cpu); #else # define perf_event_init_cpu NULL # define perf_event_exit_cpu NULL #endif extern void arch_perf_update_userpage(struct perf_event *event, struct perf_event_mmap_page *userpg, u64 now); /* * Snapshot branch stack on software events. * * Branch stack can be very useful in understanding software events. For * example, when a long function, e.g. sys_perf_event_open, returns an * errno, it is not obvious why the function failed. Branch stack could * provide very helpful information in this type of scenarios. * * On software event, it is necessary to stop the hardware branch recorder * fast. Otherwise, the hardware register/buffer will be flushed with * entries of the triggering event. Therefore, static call is used to * stop the hardware recorder. */ /* * cnt is the number of entries allocated for entries. * Return number of entries copied to . */ typedef int (perf_snapshot_branch_stack_t)(struct perf_branch_entry *entries, unsigned int cnt); DECLARE_STATIC_CALL(perf_snapshot_branch_stack, perf_snapshot_branch_stack_t); #ifndef PERF_NEEDS_LOPWR_CB static inline void perf_lopwr_cb(bool mode) { } #endif #endif /* _LINUX_PERF_EVENT_H */ |
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1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 | /* * Copyright (c) 2006-2008 Intel Corporation * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> * * DRM core CRTC related functions * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting documentation, and * that the name of the copyright holders not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission. The copyright holders make no representations * about the suitability of this software for any purpose. It is provided "as * is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. * * Authors: * Keith Packard * Eric Anholt <eric@anholt.net> * Dave Airlie <airlied@linux.ie> * Jesse Barnes <jesse.barnes@intel.com> */ #include <linux/export.h> #include <linux/moduleparam.h> #include <drm/drm_bridge.h> #include <drm/drm_client_event.h> #include <drm/drm_crtc.h> #include <drm/drm_edid.h> #include <drm/drm_fourcc.h> #include <drm/drm_managed.h> #include <drm/drm_modeset_helper_vtables.h> #include <drm/drm_print.h> #include <drm/drm_probe_helper.h> #include <drm/drm_sysfs.h> #include "drm_crtc_helper_internal.h" /** * DOC: output probing helper overview * * This library provides some helper code for output probing. It provides an * implementation of the core &drm_connector_funcs.fill_modes interface with * drm_helper_probe_single_connector_modes(). * * It also provides support for polling connectors with a work item and for * generic hotplug interrupt handling where the driver doesn't or cannot keep * track of a per-connector hpd interrupt. * * This helper library can be used independently of the modeset helper library. * Drivers can also overwrite different parts e.g. use their own hotplug * handling code to avoid probing unrelated outputs. * * The probe helpers share the function table structures with other display * helper libraries. See &struct drm_connector_helper_funcs for the details. */ static bool drm_kms_helper_poll = true; module_param_named(poll, drm_kms_helper_poll, bool, 0600); static enum drm_mode_status drm_mode_validate_flag(const struct drm_display_mode *mode, int flags) { if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && !(flags & DRM_MODE_FLAG_INTERLACE)) return MODE_NO_INTERLACE; if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && !(flags & DRM_MODE_FLAG_DBLSCAN)) return MODE_NO_DBLESCAN; if ((mode->flags & DRM_MODE_FLAG_3D_MASK) && !(flags & DRM_MODE_FLAG_3D_MASK)) return MODE_NO_STEREO; return MODE_OK; } static int drm_mode_validate_pipeline(struct drm_display_mode *mode, struct drm_connector *connector, struct drm_modeset_acquire_ctx *ctx, enum drm_mode_status *status) { struct drm_device *dev = connector->dev; struct drm_encoder *encoder; int ret; /* Step 1: Validate against connector */ ret = drm_connector_mode_valid(connector, mode, ctx, status); if (ret || *status != MODE_OK) return ret; /* Step 2: Validate against encoders and crtcs */ drm_connector_for_each_possible_encoder(connector, encoder) { struct drm_bridge *bridge; struct drm_crtc *crtc; *status = drm_encoder_mode_valid(encoder, mode); if (*status != MODE_OK) { /* No point in continuing for crtc check as this encoder * will not accept the mode anyway. If all encoders * reject the mode then, at exit, ret will not be * MODE_OK. */ continue; } bridge = drm_bridge_chain_get_first_bridge(encoder); *status = drm_bridge_chain_mode_valid(bridge, &connector->display_info, mode); drm_bridge_put(bridge); if (*status != MODE_OK) { /* There is also no point in continuing for crtc check * here. */ continue; } drm_for_each_crtc(crtc, dev) { if (!drm_encoder_crtc_ok(encoder, crtc)) continue; *status = drm_crtc_mode_valid(crtc, mode); if (*status == MODE_OK) { /* If we get to this point there is at least * one combination of encoder+crtc that works * for this mode. Lets return now. */ return 0; } } } return 0; } static int drm_helper_probe_add_cmdline_mode(struct drm_connector *connector) { struct drm_cmdline_mode *cmdline_mode; struct drm_display_mode *mode; cmdline_mode = &connector->cmdline_mode; if (!cmdline_mode->specified) return 0; /* Only add a GTF mode if we find no matching probed modes */ list_for_each_entry(mode, &connector->probed_modes, head) { if (mode->hdisplay != cmdline_mode->xres || mode->vdisplay != cmdline_mode->yres) continue; if (cmdline_mode->refresh_specified) { /* The probed mode's vrefresh is set until later */ if (drm_mode_vrefresh(mode) != cmdline_mode->refresh) continue; } /* Mark the matching mode as being preferred by the user */ mode->type |= DRM_MODE_TYPE_USERDEF; return 0; } mode = drm_mode_create_from_cmdline_mode(connector->dev, cmdline_mode); if (mode == NULL) return 0; drm_mode_probed_add(connector, mode); return 1; } enum drm_mode_status drm_crtc_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode) { const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; if (!crtc_funcs || !crtc_funcs->mode_valid) return MODE_OK; return crtc_funcs->mode_valid(crtc, mode); } enum drm_mode_status drm_encoder_mode_valid(struct drm_encoder *encoder, const struct drm_display_mode *mode) { const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; if (!encoder_funcs || !encoder_funcs->mode_valid) return MODE_OK; return encoder_funcs->mode_valid(encoder, mode); } int drm_connector_mode_valid(struct drm_connector *connector, const struct drm_display_mode *mode, struct drm_modeset_acquire_ctx *ctx, enum drm_mode_status *status) { const struct drm_connector_helper_funcs *connector_funcs = connector->helper_private; int ret = 0; if (!connector_funcs) *status = MODE_OK; else if (connector_funcs->mode_valid_ctx) ret = connector_funcs->mode_valid_ctx(connector, mode, ctx, status); else if (connector_funcs->mode_valid) *status = connector_funcs->mode_valid(connector, mode); else *status = MODE_OK; return ret; } static void drm_kms_helper_disable_hpd(struct drm_device *dev) { struct drm_connector *connector; struct drm_connector_list_iter conn_iter; drm_connector_list_iter_begin(dev, &conn_iter); drm_for_each_connector_iter(connector, &conn_iter) { const struct drm_connector_helper_funcs *funcs = connector->helper_private; if (funcs && funcs->disable_hpd) funcs->disable_hpd(connector); } drm_connector_list_iter_end(&conn_iter); } static bool drm_kms_helper_enable_hpd(struct drm_device *dev) { bool poll = false; struct drm_connector *connector; struct drm_connector_list_iter conn_iter; drm_connector_list_iter_begin(dev, &conn_iter); drm_for_each_connector_iter(connector, &conn_iter) { const struct drm_connector_helper_funcs *funcs = connector->helper_private; if (funcs && funcs->enable_hpd) funcs->enable_hpd(connector); if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) poll = true; } drm_connector_list_iter_end(&conn_iter); return poll; } #define DRM_OUTPUT_POLL_PERIOD (10*HZ) static void reschedule_output_poll_work(struct drm_device *dev) { unsigned long delay = DRM_OUTPUT_POLL_PERIOD; if (dev->mode_config.delayed_event) /* * FIXME: * * Use short (1s) delay to handle the initial delayed event. * This delay should not be needed, but Optimus/nouveau will * fail in a mysterious way if the delayed event is handled as * soon as possible like it is done in * drm_helper_probe_single_connector_modes() in case the poll * was enabled before. */ delay = HZ; schedule_delayed_work(&dev->mode_config.output_poll_work, delay); } /** * drm_kms_helper_poll_enable - re-enable output polling. * @dev: drm_device * * This function re-enables the output polling work, after it has been * temporarily disabled using drm_kms_helper_poll_disable(), for example over * suspend/resume. * * Drivers can call this helper from their device resume implementation. It is * not an error to call this even when output polling isn't enabled. * * If device polling was never initialized before, this call will trigger a * warning and return. * * Note that calls to enable and disable polling must be strictly ordered, which * is automatically the case when they're only call from suspend/resume * callbacks. */ void drm_kms_helper_poll_enable(struct drm_device *dev) { if (drm_WARN_ON_ONCE(dev, !dev->mode_config.poll_enabled) || !drm_kms_helper_poll || dev->mode_config.poll_running) return; if (drm_kms_helper_enable_hpd(dev) || dev->mode_config.delayed_event) reschedule_output_poll_work(dev); dev->mode_config.poll_running = true; } EXPORT_SYMBOL(drm_kms_helper_poll_enable); /** * drm_kms_helper_poll_reschedule - reschedule the output polling work * @dev: drm_device * * This function reschedules the output polling work, after polling for a * connector has been enabled. * * Drivers must call this helper after enabling polling for a connector by * setting %DRM_CONNECTOR_POLL_CONNECT / %DRM_CONNECTOR_POLL_DISCONNECT flags * in drm_connector::polled. Note that after disabling polling by clearing these * flags for a connector will stop the output polling work automatically if * the polling is disabled for all other connectors as well. * * The function can be called only after polling has been enabled by calling * drm_kms_helper_poll_init() / drm_kms_helper_poll_enable(). */ void drm_kms_helper_poll_reschedule(struct drm_device *dev) { if (dev->mode_config.poll_running) reschedule_output_poll_work(dev); } EXPORT_SYMBOL(drm_kms_helper_poll_reschedule); static int detect_connector_status(struct drm_connector *connector, struct drm_modeset_acquire_ctx *ctx, bool force) { const struct drm_connector_helper_funcs *funcs = connector->helper_private; if (funcs->detect_ctx) return funcs->detect_ctx(connector, ctx, force); else if (connector->funcs->detect) return connector->funcs->detect(connector, force); return connector_status_connected; } static enum drm_connector_status drm_helper_probe_detect_ctx(struct drm_connector *connector, bool force) { struct drm_modeset_acquire_ctx ctx; int ret; drm_modeset_acquire_init(&ctx, 0); retry: ret = drm_modeset_lock(&connector->dev->mode_config.connection_mutex, &ctx); if (!ret) ret = detect_connector_status(connector, &ctx, force); if (ret == -EDEADLK) { drm_modeset_backoff(&ctx); goto retry; } if (WARN_ON(ret < 0)) ret = connector_status_unknown; if (ret != connector->status) connector->epoch_counter += 1; drm_modeset_drop_locks(&ctx); drm_modeset_acquire_fini(&ctx); return ret; } /** * drm_helper_probe_detect - probe connector status * @connector: connector to probe * @ctx: acquire_ctx, or NULL to let this function handle locking. * @force: Whether destructive probe operations should be performed. * * This function calls the detect callbacks of the connector. * This function returns &drm_connector_status, or * if @ctx is set, it might also return -EDEADLK. */ int drm_helper_probe_detect(struct drm_connector *connector, struct drm_modeset_acquire_ctx *ctx, bool force) { struct drm_device *dev = connector->dev; int ret; if (!ctx) return drm_helper_probe_detect_ctx(connector, force); ret = drm_modeset_lock(&dev->mode_config.connection_mutex, ctx); if (ret) return ret; ret = detect_connector_status(connector, ctx, force); if (ret != connector->status) connector->epoch_counter += 1; return ret; } EXPORT_SYMBOL(drm_helper_probe_detect); static int drm_helper_probe_get_modes(struct drm_connector *connector) { const struct drm_connector_helper_funcs *connector_funcs = connector->helper_private; int count; count = connector_funcs->get_modes(connector); /* The .get_modes() callback should not return negative values. */ if (count < 0) { drm_err(connector->dev, ".get_modes() returned %pe\n", ERR_PTR(count)); count = 0; } /* * Fallback for when DDC probe failed in drm_get_edid() and thus skipped * override/firmware EDID. */ if (count == 0 && connector->status == connector_status_connected) count = drm_edid_override_connector_update(connector); return count; } static int __drm_helper_update_and_validate(struct drm_connector *connector, uint32_t maxX, uint32_t maxY, struct drm_modeset_acquire_ctx *ctx) { struct drm_device *dev = connector->dev; struct drm_display_mode *mode; int mode_flags = 0; int ret; drm_connector_list_update(connector); if (connector->interlace_allowed) mode_flags |= DRM_MODE_FLAG_INTERLACE; if (connector->doublescan_allowed) mode_flags |= DRM_MODE_FLAG_DBLSCAN; if (connector->stereo_allowed) mode_flags |= DRM_MODE_FLAG_3D_MASK; list_for_each_entry(mode, &connector->modes, head) { if (mode->status != MODE_OK) continue; mode->status = drm_mode_validate_driver(dev, mode); if (mode->status != MODE_OK) continue; mode->status = drm_mode_validate_size(mode, maxX, maxY); if (mode->status != MODE_OK) continue; mode->status = drm_mode_validate_flag(mode, mode_flags); if (mode->status != MODE_OK) continue; mode->status = drm_mode_validate_ycbcr420(mode, connector); if (mode->status != MODE_OK) continue; ret = drm_mode_validate_pipeline(mode, connector, ctx, &mode->status); if (ret) { drm_dbg_kms(dev, "drm_mode_validate_pipeline failed: %d\n", ret); if (drm_WARN_ON_ONCE(dev, ret != -EDEADLK)) mode->status = MODE_ERROR; else return -EDEADLK; } } return 0; } /** * drm_helper_probe_single_connector_modes - get complete set of display modes * @connector: connector to probe * @maxX: max width for modes * @maxY: max height for modes * * Based on the helper callbacks implemented by @connector in struct * &drm_connector_helper_funcs try to detect all valid modes. Modes will first * be added to the connector's probed_modes list, then culled (based on validity * and the @maxX, @maxY parameters) and put into the normal modes list. * * Intended to be used as a generic implementation of the * &drm_connector_funcs.fill_modes() vfunc for drivers that use the CRTC helpers * for output mode filtering and detection. * * The basic procedure is as follows * * 1. All modes currently on the connector's modes list are marked as stale * * 2. New modes are added to the connector's probed_modes list with * drm_mode_probed_add(). New modes start their life with status as OK. * Modes are added from a single source using the following priority order. * * - &drm_connector_helper_funcs.get_modes vfunc * - if the connector status is connector_status_connected, standard * VESA DMT modes up to 1024x768 are automatically added * (drm_add_modes_noedid()) * * Finally modes specified via the kernel command line (video=...) are * added in addition to what the earlier probes produced * (drm_helper_probe_add_cmdline_mode()). These modes are generated * using the VESA GTF/CVT formulas. * * 3. Modes are moved from the probed_modes list to the modes list. Potential * duplicates are merged together (see drm_connector_list_update()). * After this step the probed_modes list will be empty again. * * 4. Any non-stale mode on the modes list then undergoes validation * * - drm_mode_validate_basic() performs basic sanity checks * - drm_mode_validate_size() filters out modes larger than @maxX and @maxY * (if specified) * - drm_mode_validate_flag() checks the modes against basic connector * capabilities (interlace_allowed,doublescan_allowed,stereo_allowed) * - the optional &drm_connector_helper_funcs.mode_valid or * &drm_connector_helper_funcs.mode_valid_ctx helpers can perform driver * and/or sink specific checks * - the optional &drm_crtc_helper_funcs.mode_valid, * &drm_bridge_funcs.mode_valid and &drm_encoder_helper_funcs.mode_valid * helpers can perform driver and/or source specific checks which are also * enforced by the modeset/atomic helpers * * 5. Any mode whose status is not OK is pruned from the connector's modes list, * accompanied by a debug message indicating the reason for the mode's * rejection (see drm_mode_prune_invalid()). * * Returns: * The number of modes found on @connector. */ int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY) { struct drm_device *dev = connector->dev; struct drm_display_mode *mode; int count = 0, ret; enum drm_connector_status old_status; struct drm_modeset_acquire_ctx ctx; WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); drm_modeset_acquire_init(&ctx, 0); drm_dbg_kms(dev, "[CONNECTOR:%d:%s]\n", connector->base.id, connector->name); retry: ret = drm_modeset_lock(&dev->mode_config.connection_mutex, &ctx); if (ret == -EDEADLK) { drm_modeset_backoff(&ctx); goto retry; } else WARN_ON(ret < 0); /* set all old modes to the stale state */ list_for_each_entry(mode, &connector->modes, head) mode->status = MODE_STALE; old_status = connector->status; if (connector->force) { if (connector->force == DRM_FORCE_ON || connector->force == DRM_FORCE_ON_DIGITAL) connector->status = connector_status_connected; else connector->status = connector_status_disconnected; if (connector->funcs->force) connector->funcs->force(connector); } else { ret = drm_helper_probe_detect(connector, &ctx, true); if (ret == -EDEADLK) { drm_modeset_backoff(&ctx); goto retry; } else if (WARN(ret < 0, "Invalid return value %i for connector detection\n", ret)) ret = connector_status_unknown; connector->status = ret; } /* * Normally either the driver's hpd code or the poll loop should * pick up any changes and fire the hotplug event. But if * userspace sneaks in a probe, we might miss a change. Hence * check here, and if anything changed start the hotplug code. */ if (old_status != connector->status) { drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s\n", connector->base.id, connector->name, drm_get_connector_status_name(old_status), drm_get_connector_status_name(connector->status)); /* * The hotplug event code might call into the fb * helpers, and so expects that we do not hold any * locks. Fire up the poll struct instead, it will * disable itself again. */ dev->mode_config.delayed_event = true; if (dev->mode_config.poll_enabled) mod_delayed_work(system_wq, &dev->mode_config.output_poll_work, 0); } /* * Re-enable polling in case the global poll config changed but polling * is still initialized. */ if (dev->mode_config.poll_enabled) drm_kms_helper_poll_enable(dev); if (connector->status == connector_status_disconnected) { drm_dbg_kms(dev, "[CONNECTOR:%d:%s] disconnected\n", connector->base.id, connector->name); drm_connector_update_edid_property(connector, NULL); drm_mode_prune_invalid(dev, &connector->modes, false); goto exit; } count = drm_helper_probe_get_modes(connector); if (count == 0 && (connector->status == connector_status_connected || connector->status == connector_status_unknown)) { count = drm_add_modes_noedid(connector, 1024, 768); /* * Section 4.2.2.6 (EDID Corruption Detection) of the DP 1.4a * Link CTS specifies that 640x480 (the official "failsafe" * mode) needs to be the default if there's no EDID. */ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) drm_set_preferred_mode(connector, 640, 480); } count += drm_helper_probe_add_cmdline_mode(connector); if (count != 0) { ret = __drm_helper_update_and_validate(connector, maxX, maxY, &ctx); if (ret == -EDEADLK) { drm_modeset_backoff(&ctx); goto retry; } } drm_mode_prune_invalid(dev, &connector->modes, true); /* * Displayport spec section 5.2.1.2 ("Video Timing Format") says that * all detachable sinks shall support 640x480 @60Hz as a fail safe * mode. If all modes were pruned, perhaps because they need more * lanes or a higher pixel clock than available, at least try to add * in 640x480. */ if (list_empty(&connector->modes) && connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { count = drm_add_modes_noedid(connector, 640, 480); ret = __drm_helper_update_and_validate(connector, maxX, maxY, &ctx); if (ret == -EDEADLK) { drm_modeset_backoff(&ctx); goto retry; } drm_mode_prune_invalid(dev, &connector->modes, true); } exit: drm_modeset_drop_locks(&ctx); drm_modeset_acquire_fini(&ctx); if (list_empty(&connector->modes)) return 0; drm_mode_sort(&connector->modes); drm_dbg_kms(dev, "[CONNECTOR:%d:%s] probed modes:\n", connector->base.id, connector->name); list_for_each_entry(mode, &connector->modes, head) { drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); drm_dbg_kms(dev, "Probed mode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode)); } return count; } EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); /** * drm_kms_helper_hotplug_event - fire off KMS hotplug events * @dev: drm_device whose connector state changed * * This function fires off the uevent for userspace and also calls the * client hotplug function, which is most commonly used to inform the fbdev * emulation code and allow it to update the fbcon output configuration. * * Drivers should call this from their hotplug handling code when a change is * detected. Note that this function does not do any output detection of its * own, like drm_helper_hpd_irq_event() does - this is assumed to be done by the * driver already. * * This function must be called from process context with no mode * setting locks held. * * If only a single connector has changed, consider calling * drm_kms_helper_connector_hotplug_event() instead. */ void drm_kms_helper_hotplug_event(struct drm_device *dev) { drm_sysfs_hotplug_event(dev); drm_client_dev_hotplug(dev); } EXPORT_SYMBOL(drm_kms_helper_hotplug_event); /** * drm_kms_helper_connector_hotplug_event - fire off a KMS connector hotplug event * @connector: drm_connector which has changed * * This is the same as drm_kms_helper_hotplug_event(), except it fires a more * fine-grained uevent for a single connector. */ void drm_kms_helper_connector_hotplug_event(struct drm_connector *connector) { struct drm_device *dev = connector->dev; drm_sysfs_connector_hotplug_event(connector); drm_client_dev_hotplug(dev); } EXPORT_SYMBOL(drm_kms_helper_connector_hotplug_event); static void output_poll_execute(struct work_struct *work) { struct delayed_work *delayed_work = to_delayed_work(work); struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); struct drm_connector *connector; struct drm_connector_list_iter conn_iter; enum drm_connector_status old_status; bool repoll = false, changed; u64 old_epoch_counter; if (!dev->mode_config.poll_enabled) return; /* Pick up any changes detected by the probe functions. */ changed = dev->mode_config.delayed_event; dev->mode_config.delayed_event = false; if (!drm_kms_helper_poll) { if (dev->mode_config.poll_running) { drm_kms_helper_disable_hpd(dev); dev->mode_config.poll_running = false; } goto out; } if (!mutex_trylock(&dev->mode_config.mutex)) { repoll = true; goto out; } drm_connector_list_iter_begin(dev, &conn_iter); drm_for_each_connector_iter(connector, &conn_iter) { /* Ignore forced connectors. */ if (connector->force) continue; /* Ignore HPD capable connectors and connectors where we don't * want any hotplug detection at all for polling. */ if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) continue; old_status = connector->status; /* if we are connected and don't want to poll for disconnect skip it */ if (old_status == connector_status_connected && !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) continue; repoll = true; old_epoch_counter = connector->epoch_counter; connector->status = drm_helper_probe_detect(connector, NULL, false); if (old_epoch_counter != connector->epoch_counter) { const char *old, *new; /* * The poll work sets force=false when calling detect so * that drivers can avoid to do disruptive tests (e.g. * when load detect cycles could cause flickering on * other, running displays). This bears the risk that we * flip-flop between unknown here in the poll work and * the real state when userspace forces a full detect * call after receiving a hotplug event due to this * change. * * Hence clamp an unknown detect status to the old * value. */ if (connector->status == connector_status_unknown) { connector->status = old_status; continue; } old = drm_get_connector_status_name(old_status); new = drm_get_connector_status_name(connector->status); drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s\n", connector->base.id, connector->name, old, new); drm_dbg_kms(dev, "[CONNECTOR:%d:%s] epoch counter %llu -> %llu\n", connector->base.id, connector->name, old_epoch_counter, connector->epoch_counter); changed = true; } } drm_connector_list_iter_end(&conn_iter); mutex_unlock(&dev->mode_config.mutex); out: if (changed) drm_kms_helper_hotplug_event(dev); if (repoll) schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); } /** * drm_kms_helper_is_poll_worker - is %current task an output poll worker? * * Determine if %current task is an output poll worker. This can be used * to select distinct code paths for output polling versus other contexts. * * One use case is to avoid a deadlock between the output poll worker and * the autosuspend worker wherein the latter waits for polling to finish * upon calling drm_kms_helper_poll_disable(), while the former waits for * runtime suspend to finish upon calling pm_runtime_get_sync() in a * connector ->detect hook. */ bool drm_kms_helper_is_poll_worker(void) { struct work_struct *work = current_work(); return work && work->func == output_poll_execute; } EXPORT_SYMBOL(drm_kms_helper_is_poll_worker); /** * drm_kms_helper_poll_disable - disable output polling * @dev: drm_device * * This function disables the output polling work. * * Drivers can call this helper from their device suspend implementation. It is * not an error to call this even when output polling isn't enabled or already * disabled. Polling is re-enabled by calling drm_kms_helper_poll_enable(). * * If however, the polling was never initialized, this call will trigger a * warning and return. * * Note that calls to enable and disable polling must be strictly ordered, which * is automatically the case when they're only call from suspend/resume * callbacks. */ void drm_kms_helper_poll_disable(struct drm_device *dev) { if (drm_WARN_ON(dev, !dev->mode_config.poll_enabled)) return; if (dev->mode_config.poll_running) drm_kms_helper_disable_hpd(dev); cancel_delayed_work_sync(&dev->mode_config.output_poll_work); dev->mode_config.poll_running = false; } EXPORT_SYMBOL(drm_kms_helper_poll_disable); /** * drm_kms_helper_poll_init - initialize and enable output polling * @dev: drm_device * * This function initializes and then also enables output polling support for * @dev. Drivers which do not have reliable hotplug support in hardware can use * this helper infrastructure to regularly poll such connectors for changes in * their connection state. * * Drivers can control which connectors are polled by setting the * DRM_CONNECTOR_POLL_CONNECT and DRM_CONNECTOR_POLL_DISCONNECT flags. On * connectors where probing live outputs can result in visual distortion drivers * should not set the DRM_CONNECTOR_POLL_DISCONNECT flag to avoid this. * Connectors which have no flag or only DRM_CONNECTOR_POLL_HPD set are * completely ignored by the polling logic. * * Note that a connector can be both polled and probed from the hotplug handler, * in case the hotplug interrupt is known to be unreliable. */ void drm_kms_helper_poll_init(struct drm_device *dev) { INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); dev->mode_config.poll_enabled = true; drm_kms_helper_poll_enable(dev); } EXPORT_SYMBOL(drm_kms_helper_poll_init); /** * drm_kms_helper_poll_fini - disable output polling and clean it up * @dev: drm_device */ void drm_kms_helper_poll_fini(struct drm_device *dev) { if (!dev->mode_config.poll_enabled) return; drm_kms_helper_poll_disable(dev); dev->mode_config.poll_enabled = false; } EXPORT_SYMBOL(drm_kms_helper_poll_fini); static void drm_kms_helper_poll_init_release(struct drm_device *dev, void *res) { drm_kms_helper_poll_fini(dev); } /** * drmm_kms_helper_poll_init - initialize and enable output polling * @dev: drm_device * * This function initializes and then also enables output polling support for * @dev similar to drm_kms_helper_poll_init(). Polling will automatically be * cleaned up when the DRM device goes away. * * See drm_kms_helper_poll_init() for more information. */ void drmm_kms_helper_poll_init(struct drm_device *dev) { int ret; drm_kms_helper_poll_init(dev); ret = drmm_add_action_or_reset(dev, drm_kms_helper_poll_init_release, dev); if (ret) drm_warn(dev, "Connector status will not be updated, error %d\n", ret); } EXPORT_SYMBOL(drmm_kms_helper_poll_init); static bool check_connector_changed(struct drm_connector *connector) { struct drm_device *dev = connector->dev; enum drm_connector_status old_status; u64 old_epoch_counter; /* Only handle HPD capable connectors. */ drm_WARN_ON(dev, !(connector->polled & DRM_CONNECTOR_POLL_HPD)); drm_WARN_ON(dev, !mutex_is_locked(&dev->mode_config.mutex)); old_status = connector->status; old_epoch_counter = connector->epoch_counter; connector->status = drm_helper_probe_detect(connector, NULL, false); if (old_epoch_counter == connector->epoch_counter) { drm_dbg_kms(dev, "[CONNECTOR:%d:%s] Same epoch counter %llu\n", connector->base.id, connector->name, connector->epoch_counter); return false; } drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s\n", connector->base.id, connector->name, drm_get_connector_status_name(old_status), drm_get_connector_status_name(connector->status)); drm_dbg_kms(dev, "[CONNECTOR:%d:%s] Changed epoch counter %llu => %llu\n", connector->base.id, connector->name, old_epoch_counter, connector->epoch_counter); return true; } /** * drm_connector_helper_hpd_irq_event - hotplug processing * @connector: drm_connector * * Drivers can use this helper function to run a detect cycle on a connector * which has the DRM_CONNECTOR_POLL_HPD flag set in its &polled member. * * This helper function is useful for drivers which can track hotplug * interrupts for a single connector. Drivers that want to send a * hotplug event for all connectors or can't track hotplug interrupts * per connector need to use drm_helper_hpd_irq_event(). * * This function must be called from process context with no mode * setting locks held. * * Note that a connector can be both polled and probed from the hotplug * handler, in case the hotplug interrupt is known to be unreliable. * * Returns: * A boolean indicating whether the connector status changed or not */ bool drm_connector_helper_hpd_irq_event(struct drm_connector *connector) { struct drm_device *dev = connector->dev; bool changed; mutex_lock(&dev->mode_config.mutex); changed = check_connector_changed(connector); mutex_unlock(&dev->mode_config.mutex); if (changed) { drm_kms_helper_connector_hotplug_event(connector); drm_dbg_kms(dev, "[CONNECTOR:%d:%s] Sent hotplug event\n", connector->base.id, connector->name); } return changed; } EXPORT_SYMBOL(drm_connector_helper_hpd_irq_event); /** * drm_helper_hpd_irq_event - hotplug processing * @dev: drm_device * * Drivers can use this helper function to run a detect cycle on all connectors * which have the DRM_CONNECTOR_POLL_HPD flag set in their &polled member. All * other connectors are ignored, which is useful to avoid reprobing fixed * panels. * * This helper function is useful for drivers which can't or don't track hotplug * interrupts for each connector. * * Drivers which support hotplug interrupts for each connector individually and * which have a more fine-grained detect logic can use * drm_connector_helper_hpd_irq_event(). Alternatively, they should bypass this * code and directly call drm_kms_helper_hotplug_event() in case the connector * state changed. * * This function must be called from process context with no mode * setting locks held. * * Note that a connector can be both polled and probed from the hotplug handler, * in case the hotplug interrupt is known to be unreliable. * * Returns: * A boolean indicating whether the connector status changed or not */ bool drm_helper_hpd_irq_event(struct drm_device *dev) { struct drm_connector *connector, *first_changed_connector = NULL; struct drm_connector_list_iter conn_iter; int changed = 0; if (!dev->mode_config.poll_enabled) return false; mutex_lock(&dev->mode_config.mutex); drm_connector_list_iter_begin(dev, &conn_iter); drm_for_each_connector_iter(connector, &conn_iter) { /* Only handle HPD capable connectors. */ if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) continue; if (check_connector_changed(connector)) { if (!first_changed_connector) { drm_connector_get(connector); first_changed_connector = connector; } changed++; } } drm_connector_list_iter_end(&conn_iter); mutex_unlock(&dev->mode_config.mutex); if (changed == 1) drm_kms_helper_connector_hotplug_event(first_changed_connector); else if (changed > 0) drm_kms_helper_hotplug_event(dev); if (first_changed_connector) drm_connector_put(first_changed_connector); return changed; } EXPORT_SYMBOL(drm_helper_hpd_irq_event); /** * drm_crtc_helper_mode_valid_fixed - Validates a display mode * @crtc: the crtc * @mode: the mode to validate * @fixed_mode: the display hardware's mode * * Returns: * MODE_OK on success, or another mode-status code otherwise. */ enum drm_mode_status drm_crtc_helper_mode_valid_fixed(struct drm_crtc *crtc, const struct drm_display_mode *mode, const struct drm_display_mode *fixed_mode) { if (mode->hdisplay != fixed_mode->hdisplay && mode->vdisplay != fixed_mode->vdisplay) return MODE_ONE_SIZE; else if (mode->hdisplay != fixed_mode->hdisplay) return MODE_ONE_WIDTH; else if (mode->vdisplay != fixed_mode->vdisplay) return MODE_ONE_HEIGHT; return MODE_OK; } EXPORT_SYMBOL(drm_crtc_helper_mode_valid_fixed); /** * drm_connector_helper_get_modes_fixed - Duplicates a display mode for a connector * @connector: the connector * @fixed_mode: the display hardware's mode * * This function duplicates a display modes for a connector. Drivers for hardware * that only supports a single fixed mode can use this function in their connector's * get_modes helper. * * Returns: * The number of created modes. */ int drm_connector_helper_get_modes_fixed(struct drm_connector *connector, const struct drm_display_mode *fixed_mode) { struct drm_device *dev = connector->dev; struct drm_display_mode *mode; mode = drm_mode_duplicate(dev, fixed_mode); if (!mode) { drm_err(dev, "Failed to duplicate mode " DRM_MODE_FMT "\n", DRM_MODE_ARG(fixed_mode)); return 0; } if (mode->name[0] == '\0') drm_mode_set_name(mode); mode->type |= DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(connector, mode); if (mode->width_mm) connector->display_info.width_mm = mode->width_mm; if (mode->height_mm) connector->display_info.height_mm = mode->height_mm; return 1; } EXPORT_SYMBOL(drm_connector_helper_get_modes_fixed); /** * drm_connector_helper_get_modes - Read EDID and update connector. * @connector: The connector * * Read the EDID using drm_edid_read() (which requires that connector->ddc is * set), and update the connector using the EDID. * * This can be used as the "default" connector helper .get_modes() hook if the * driver does not need any special processing. This is sets the example what * custom .get_modes() hooks should do regarding EDID read and connector update. * * Returns: Number of modes. */ int drm_connector_helper_get_modes(struct drm_connector *connector) { const struct drm_edid *drm_edid; int count; drm_edid = drm_edid_read(connector); /* * Unconditionally update the connector. If the EDID was read * successfully, fill in the connector information derived from the * EDID. Otherwise, if the EDID is NULL, clear the connector * information. */ drm_edid_connector_update(connector, drm_edid); count = drm_edid_connector_add_modes(connector); drm_edid_free(drm_edid); return count; } EXPORT_SYMBOL(drm_connector_helper_get_modes); /** * drm_connector_helper_tv_get_modes - Fills the modes availables to a TV connector * @connector: The connector * * Fills the available modes for a TV connector based on the supported * TV modes, and the default mode expressed by the kernel command line. * * This can be used as the default TV connector helper .get_modes() hook * if the driver does not need any special processing. * * Returns: * The number of modes added to the connector. */ int drm_connector_helper_tv_get_modes(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct drm_property *tv_mode_property = dev->mode_config.tv_mode_property; struct drm_cmdline_mode *cmdline = &connector->cmdline_mode; unsigned int ntsc_modes = BIT(DRM_MODE_TV_MODE_NTSC) | BIT(DRM_MODE_TV_MODE_NTSC_443) | BIT(DRM_MODE_TV_MODE_NTSC_J) | BIT(DRM_MODE_TV_MODE_PAL_M); unsigned int pal_modes = BIT(DRM_MODE_TV_MODE_PAL) | BIT(DRM_MODE_TV_MODE_PAL_N) | BIT(DRM_MODE_TV_MODE_SECAM); unsigned int tv_modes[2] = { UINT_MAX, UINT_MAX }; unsigned int i, supported_tv_modes = 0; if (!tv_mode_property) return 0; for (i = 0; i < tv_mode_property->num_values; i++) supported_tv_modes |= BIT(tv_mode_property->values[i]); if (((supported_tv_modes & ntsc_modes) && (supported_tv_modes & pal_modes)) || (supported_tv_modes & BIT(DRM_MODE_TV_MODE_MONOCHROME))) { uint64_t default_mode; if (drm_object_property_get_default_value(&connector->base, tv_mode_property, &default_mode)) return 0; if (cmdline->tv_mode_specified) default_mode = cmdline->tv_mode; if (BIT(default_mode) & ntsc_modes) { tv_modes[0] = DRM_MODE_TV_MODE_NTSC; tv_modes[1] = DRM_MODE_TV_MODE_PAL; } else { tv_modes[0] = DRM_MODE_TV_MODE_PAL; tv_modes[1] = DRM_MODE_TV_MODE_NTSC; } } else if (supported_tv_modes & ntsc_modes) { tv_modes[0] = DRM_MODE_TV_MODE_NTSC; } else if (supported_tv_modes & pal_modes) { tv_modes[0] = DRM_MODE_TV_MODE_PAL; } else { return 0; } for (i = 0; i < ARRAY_SIZE(tv_modes); i++) { struct drm_display_mode *mode; if (tv_modes[i] == DRM_MODE_TV_MODE_NTSC) mode = drm_mode_analog_ntsc_480i(dev); else if (tv_modes[i] == DRM_MODE_TV_MODE_PAL) mode = drm_mode_analog_pal_576i(dev); else break; if (!mode) return i; if (!i) mode->type |= DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(connector, mode); } return i; } EXPORT_SYMBOL(drm_connector_helper_tv_get_modes); /** * drm_connector_helper_detect_from_ddc - Read EDID and detect connector status. * @connector: The connector * @ctx: Acquire context * @force: Perform screen-destructive operations, if necessary * * Detects the connector status by reading the EDID using drm_probe_ddc(), * which requires connector->ddc to be set. Returns connector_status_connected * on success or connector_status_disconnected on failure. * * Returns: * The connector status as defined by enum drm_connector_status. */ int drm_connector_helper_detect_from_ddc(struct drm_connector *connector, struct drm_modeset_acquire_ctx *ctx, bool force) { struct i2c_adapter *ddc = connector->ddc; if (!ddc) return connector_status_unknown; if (drm_probe_ddc(ddc)) return connector_status_connected; return connector_status_disconnected; } EXPORT_SYMBOL(drm_connector_helper_detect_from_ddc); |
| 2 4 1 4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | // SPDX-License-Identifier: GPL-2.0-only /* * HID driver for Aureal Cy se W-01RN USB_V3.1 devices * * Copyright (c) 2010 Franco Catrin <fcatrin@gmail.com> * Copyright (c) 2010 Ben Cropley <bcropley@internode.on.net> * * Based on HID sunplus driver by * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc * Copyright (c) 2006-2007 Jiri Kosina * Copyright (c) 2008 Jiri Slaby */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" static const __u8 *aureal_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) { dev_info(&hdev->dev, "fixing Aureal Cy se W-01RN USB_V3.1 report descriptor.\n"); rdesc[53] = 0x65; } return rdesc; } static const struct hid_device_id aureal_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) }, { } }; MODULE_DEVICE_TABLE(hid, aureal_devices); static struct hid_driver aureal_driver = { .name = "aureal", .id_table = aureal_devices, .report_fixup = aureal_report_fixup, }; module_hid_driver(aureal_driver); MODULE_DESCRIPTION("HID driver for Aureal Cy se W-01RN USB_V3.1 devices"); MODULE_LICENSE("GPL"); |
| 409 199 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | // SPDX-License-Identifier: GPL-2.0 #include <linux/compiler.h> #include <linux/errno.h> #include <linux/export.h> #include <linux/fault-inject-usercopy.h> #include <linux/instrumented.h> #include <linux/kernel.h> #include <linux/nospec.h> #include <linux/string.h> #include <linux/uaccess.h> #include <linux/wordpart.h> /* out-of-line parts */ #if !defined(INLINE_COPY_FROM_USER) || defined(CONFIG_RUST) unsigned long _copy_from_user(void *to, const void __user *from, unsigned long n) { return _inline_copy_from_user(to, from, n); } EXPORT_SYMBOL(_copy_from_user); #endif #if !defined(INLINE_COPY_TO_USER) || defined(CONFIG_RUST) unsigned long _copy_to_user(void __user *to, const void *from, unsigned long n) { return _inline_copy_to_user(to, from, n); } EXPORT_SYMBOL(_copy_to_user); #endif /** * check_zeroed_user: check if a userspace buffer only contains zero bytes * @from: Source address, in userspace. * @size: Size of buffer. * * This is effectively shorthand for "memchr_inv(from, 0, size) == NULL" for * userspace addresses (and is more efficient because we don't care where the * first non-zero byte is). * * Returns: * * 0: There were non-zero bytes present in the buffer. * * 1: The buffer was full of zero bytes. * * -EFAULT: access to userspace failed. */ int check_zeroed_user(const void __user *from, size_t size) { unsigned long val; uintptr_t align = (uintptr_t) from % sizeof(unsigned long); if (unlikely(size == 0)) return 1; from -= align; size += align; if (!user_read_access_begin(from, size)) return -EFAULT; unsafe_get_user(val, (unsigned long __user *) from, err_fault); if (align) val &= ~aligned_byte_mask(align); while (size > sizeof(unsigned long)) { if (unlikely(val)) goto done; from += sizeof(unsigned long); size -= sizeof(unsigned long); unsafe_get_user(val, (unsigned long __user *) from, err_fault); } if (size < sizeof(unsigned long)) val &= aligned_byte_mask(size); done: user_read_access_end(); return (val == 0); err_fault: user_read_access_end(); return -EFAULT; } EXPORT_SYMBOL(check_zeroed_user); |
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523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2016 Masaki Ota <masaki.ota@jp.alps.com> */ #include <linux/kernel.h> #include <linux/hid.h> #include <linux/input.h> #include <linux/input/mt.h> #include <linux/module.h> #include <linux/unaligned.h> #include "hid-ids.h" /* ALPS Device Product ID */ #define HID_PRODUCT_ID_T3_BTNLESS 0xD0C0 #define HID_PRODUCT_ID_COSMO 0x1202 #define HID_PRODUCT_ID_U1_PTP_1 0x1207 #define HID_PRODUCT_ID_U1 0x1209 #define HID_PRODUCT_ID_U1_PTP_2 0x120A #define HID_PRODUCT_ID_U1_DUAL 0x120B #define HID_PRODUCT_ID_T4_BTNLESS 0x120C #define DEV_SINGLEPOINT 0x01 #define DEV_DUALPOINT 0x02 #define U1_MOUSE_REPORT_ID 0x01 /* Mouse data ReportID */ #define U1_ABSOLUTE_REPORT_ID 0x03 /* Absolute data ReportID */ #define U1_ABSOLUTE_REPORT_ID_SECD 0x02 /* FW-PTP Absolute data ReportID */ #define U1_FEATURE_REPORT_ID 0x05 /* Feature ReportID */ #define U1_SP_ABSOLUTE_REPORT_ID 0x06 /* Feature ReportID */ #define U1_FEATURE_REPORT_LEN 0x08 /* Feature Report Length */ #define U1_FEATURE_REPORT_LEN_ALL 0x0A #define U1_CMD_REGISTER_READ 0xD1 #define U1_CMD_REGISTER_WRITE 0xD2 #define U1_DEVTYPE_SP_SUPPORT 0x10 /* SP Support */ #define U1_DISABLE_DEV 0x01 #define U1_TP_ABS_MODE 0x02 #define U1_SP_ABS_MODE 0x80 #define ADDRESS_U1_DEV_CTRL_1 0x00800040 #define ADDRESS_U1_DEVICE_TYP 0x00800043 #define ADDRESS_U1_NUM_SENS_X 0x00800047 #define ADDRESS_U1_NUM_SENS_Y 0x00800048 #define ADDRESS_U1_PITCH_SENS_X 0x00800049 #define ADDRESS_U1_PITCH_SENS_Y 0x0080004A #define ADDRESS_U1_RESO_DWN_ABS 0x0080004E #define ADDRESS_U1_PAD_BTN 0x00800052 #define ADDRESS_U1_SP_BTN 0x0080009F #define T4_INPUT_REPORT_LEN sizeof(struct t4_input_report) #define T4_FEATURE_REPORT_LEN T4_INPUT_REPORT_LEN #define T4_FEATURE_REPORT_ID 7 #define T4_CMD_REGISTER_READ 0x08 #define T4_CMD_REGISTER_WRITE 0x07 #define T4_ADDRESS_BASE 0xC2C0 #define PRM_SYS_CONFIG_1 (T4_ADDRESS_BASE + 0x0002) #define T4_PRM_FEED_CONFIG_1 (T4_ADDRESS_BASE + 0x0004) #define T4_PRM_FEED_CONFIG_4 (T4_ADDRESS_BASE + 0x001A) #define T4_PRM_ID_CONFIG_3 (T4_ADDRESS_BASE + 0x00B0) #define T4_FEEDCFG4_ADVANCED_ABS_ENABLE 0x01 #define T4_I2C_ABS 0x78 #define T4_COUNT_PER_ELECTRODE 256 #define MAX_TOUCHES 5 enum dev_num { U1, T4, UNKNOWN, }; /** * struct alps_dev * * @input: pointer to the kernel input device * @input2: pointer to the kernel input2 device * @hdev: pointer to the struct hid_device * * @dev_type: device type * @max_fingers: total number of fingers * @has_sp: boolean of sp existense * @sp_btn_info: button information * @x_active_len_mm: active area length of X (mm) * @y_active_len_mm: active area length of Y (mm) * @x_max: maximum x coordinate value * @y_max: maximum y coordinate value * @x_min: minimum x coordinate value * @y_min: minimum y coordinate value * @btn_cnt: number of buttons * @sp_btn_cnt: number of stick buttons */ struct alps_dev { struct input_dev *input; struct input_dev *input2; struct hid_device *hdev; enum dev_num dev_type; u8 max_fingers; u8 has_sp; u8 sp_btn_info; u32 x_active_len_mm; u32 y_active_len_mm; u32 x_max; u32 y_max; u32 x_min; u32 y_min; u32 btn_cnt; u32 sp_btn_cnt; }; struct t4_contact_data { u8 palm; u8 x_lo; u8 x_hi; u8 y_lo; u8 y_hi; }; struct t4_input_report { u8 reportID; u8 numContacts; struct t4_contact_data contact[5]; u8 button; u8 track[5]; u8 zx[5], zy[5]; u8 palmTime[5]; u8 kilroy; u16 timeStamp; }; static u16 t4_calc_check_sum(u8 *buffer, unsigned long offset, unsigned long length) { u16 sum1 = 0xFF, sum2 = 0xFF; unsigned long i = 0; if (offset + length >= 50) return 0; while (length > 0) { u32 tlen = length > 20 ? 20 : length; length -= tlen; do { sum1 += buffer[offset + i]; sum2 += sum1; i++; } while (--tlen > 0); sum1 = (sum1 & 0xFF) + (sum1 >> 8); sum2 = (sum2 & 0xFF) + (sum2 >> 8); } sum1 = (sum1 & 0xFF) + (sum1 >> 8); sum2 = (sum2 & 0xFF) + (sum2 >> 8); return(sum2 << 8 | sum1); } static int t4_read_write_register(struct hid_device *hdev, u32 address, u8 *read_val, u8 write_val, bool read_flag) { int ret; u16 check_sum; u8 *input; u8 *readbuf = NULL; input = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL); if (!input) return -ENOMEM; input[0] = T4_FEATURE_REPORT_ID; if (read_flag) { input[1] = T4_CMD_REGISTER_READ; input[8] = 0x00; } else { input[1] = T4_CMD_REGISTER_WRITE; input[8] = write_val; } put_unaligned_le32(address, input + 2); input[6] = 1; input[7] = 0; /* Calculate the checksum */ check_sum = t4_calc_check_sum(input, 1, 8); input[9] = (u8)check_sum; input[10] = (u8)(check_sum >> 8); input[11] = 0; ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, input, T4_FEATURE_REPORT_LEN, HID_FEATURE_REPORT, HID_REQ_SET_REPORT); if (ret < 0) { dev_err(&hdev->dev, "failed to read command (%d)\n", ret); goto exit; } if (read_flag) { readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL); if (!readbuf) { ret = -ENOMEM; goto exit; } ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, readbuf, T4_FEATURE_REPORT_LEN, HID_FEATURE_REPORT, HID_REQ_GET_REPORT); if (ret < 0) { dev_err(&hdev->dev, "failed read register (%d)\n", ret); goto exit_readbuf; } ret = -EINVAL; if (*(u32 *)&readbuf[6] != address) { dev_err(&hdev->dev, "read register address error (%x,%x)\n", *(u32 *)&readbuf[6], address); goto exit_readbuf; } if (*(u16 *)&readbuf[10] != 1) { dev_err(&hdev->dev, "read register size error (%x)\n", *(u16 *)&readbuf[10]); goto exit_readbuf; } check_sum = t4_calc_check_sum(readbuf, 6, 7); if (*(u16 *)&readbuf[13] != check_sum) { dev_err(&hdev->dev, "read register checksum error (%x,%x)\n", *(u16 *)&readbuf[13], check_sum); goto exit_readbuf; } *read_val = readbuf[12]; } ret = 0; exit_readbuf: kfree(readbuf); exit: kfree(input); return ret; } static int u1_read_write_register(struct hid_device *hdev, u32 address, u8 *read_val, u8 write_val, bool read_flag) { int ret, i; u8 check_sum; u8 *input; u8 *readbuf; input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); if (!input) return -ENOMEM; input[0] = U1_FEATURE_REPORT_ID; if (read_flag) { input[1] = U1_CMD_REGISTER_READ; input[6] = 0x00; } else { input[1] = U1_CMD_REGISTER_WRITE; input[6] = write_val; } put_unaligned_le32(address, input + 2); /* Calculate the checksum */ check_sum = U1_FEATURE_REPORT_LEN_ALL; for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++) check_sum += input[i]; input[7] = check_sum; ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input, U1_FEATURE_REPORT_LEN, HID_FEATURE_REPORT, HID_REQ_SET_REPORT); if (ret < 0) { dev_err(&hdev->dev, "failed to read command (%d)\n", ret); goto exit; } if (read_flag) { readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); if (!readbuf) { ret = -ENOMEM; goto exit; } ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf, U1_FEATURE_REPORT_LEN, HID_FEATURE_REPORT, HID_REQ_GET_REPORT); if (ret < 0) { dev_err(&hdev->dev, "failed read register (%d)\n", ret); kfree(readbuf); goto exit; } *read_val = readbuf[6]; kfree(readbuf); } ret = 0; exit: kfree(input); return ret; } static int t4_raw_event(struct alps_dev *hdata, u8 *data, int size) { unsigned int x, y, z; int i; struct t4_input_report *p_report = (struct t4_input_report *)data; if (!data) return 0; for (i = 0; i < hdata->max_fingers; i++) { x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo; y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo; y = hdata->y_max - y + hdata->y_min; z = (p_report->contact[i].palm < 0x80 && p_report->contact[i].palm > 0) * 62; if (x == 0xffff) { x = 0; y = 0; z = 0; } input_mt_slot(hdata->input, i); input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, z != 0); if (!z) continue; input_report_abs(hdata->input, ABS_MT_POSITION_X, x); input_report_abs(hdata->input, ABS_MT_POSITION_Y, y); input_report_abs(hdata->input, ABS_MT_PRESSURE, z); } input_mt_sync_frame(hdata->input); input_report_key(hdata->input, BTN_LEFT, p_report->button); input_sync(hdata->input); return 1; } static int u1_raw_event(struct alps_dev *hdata, u8 *data, int size) { unsigned int x, y, z; int i; short sp_x, sp_y; if (!data) return 0; switch (data[0]) { case U1_MOUSE_REPORT_ID: break; case U1_FEATURE_REPORT_ID: break; case U1_ABSOLUTE_REPORT_ID: case U1_ABSOLUTE_REPORT_ID_SECD: for (i = 0; i < hdata->max_fingers; i++) { u8 *contact = &data[i * 5]; x = get_unaligned_le16(contact + 3); y = get_unaligned_le16(contact + 5); z = contact[7] & 0x7F; input_mt_slot(hdata->input, i); if (z != 0) { input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, 1); input_report_abs(hdata->input, ABS_MT_POSITION_X, x); input_report_abs(hdata->input, ABS_MT_POSITION_Y, y); input_report_abs(hdata->input, ABS_MT_PRESSURE, z); } else { input_mt_report_slot_inactive(hdata->input); } } input_mt_sync_frame(hdata->input); input_report_key(hdata->input, BTN_LEFT, data[1] & 0x1); input_report_key(hdata->input, BTN_RIGHT, (data[1] & 0x2)); input_report_key(hdata->input, BTN_MIDDLE, (data[1] & 0x4)); input_sync(hdata->input); return 1; case U1_SP_ABSOLUTE_REPORT_ID: sp_x = get_unaligned_le16(data+2); sp_y = get_unaligned_le16(data+4); sp_x = sp_x / 8; sp_y = sp_y / 8; input_report_rel(hdata->input2, REL_X, sp_x); input_report_rel(hdata->input2, REL_Y, sp_y); input_report_key(hdata->input2, BTN_LEFT, data[1] & 0x1); input_report_key(hdata->input2, BTN_RIGHT, (data[1] & 0x2)); input_report_key(hdata->input2, BTN_MIDDLE, (data[1] & 0x4)); input_sync(hdata->input2); return 1; } return 0; } static int alps_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { int ret = 0; struct alps_dev *hdata = hid_get_drvdata(hdev); switch (hdev->product) { case HID_PRODUCT_ID_T4_BTNLESS: ret = t4_raw_event(hdata, data, size); break; default: ret = u1_raw_event(hdata, data, size); break; } return ret; } static int __maybe_unused alps_post_reset(struct hid_device *hdev) { int ret = -1; struct alps_dev *data = hid_get_drvdata(hdev); switch (data->dev_type) { case T4: ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1, NULL, T4_I2C_ABS, false); if (ret < 0) { dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret); goto exit; } ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false); if (ret < 0) { dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret); goto exit; } break; case U1: ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false); if (ret < 0) { dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret); goto exit; } break; default: break; } exit: return ret; } static int __maybe_unused alps_post_resume(struct hid_device *hdev) { return alps_post_reset(hdev); } static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data) { int ret; u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y; u8 pitch_x, pitch_y, resolution; /* Device initialization */ ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, &dev_ctrl, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret); goto exit; } dev_ctrl &= ~U1_DISABLE_DEV; dev_ctrl |= U1_TP_ABS_MODE; ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, NULL, dev_ctrl, false); if (ret < 0) { dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret); goto exit; } ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X, &sen_line_num_x, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret); goto exit; } ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y, &sen_line_num_y, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret); goto exit; } ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X, &pitch_x, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret); goto exit; } ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y, &pitch_y, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret); goto exit; } ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS, &resolution, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret); goto exit; } pri_data->x_active_len_mm = (pitch_x * (sen_line_num_x - 1)) / 10; pri_data->y_active_len_mm = (pitch_y * (sen_line_num_y - 1)) / 10; pri_data->x_max = (resolution << 2) * (sen_line_num_x - 1); pri_data->x_min = 1; pri_data->y_max = (resolution << 2) * (sen_line_num_y - 1); pri_data->y_min = 1; ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN, &tmp, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret); goto exit; } if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) { pri_data->btn_cnt = (tmp & 0x0F); } else { /* Button pad */ pri_data->btn_cnt = 1; } pri_data->has_sp = 0; /* Check StickPointer device */ ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP, &tmp, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret); goto exit; } if (tmp & U1_DEVTYPE_SP_SUPPORT) { dev_ctrl |= U1_SP_ABS_MODE; ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, NULL, dev_ctrl, false); if (ret < 0) { dev_err(&hdev->dev, "failed SP mode (%d)\n", ret); goto exit; } ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN, &pri_data->sp_btn_info, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret); goto exit; } pri_data->has_sp = 1; } pri_data->max_fingers = 5; exit: return ret; } static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data) { int ret; u8 tmp, sen_line_num_x, sen_line_num_y; ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret); goto exit; } sen_line_num_x = 16 + ((tmp & 0x0F) | (tmp & 0x08 ? 0xF0 : 0)); sen_line_num_y = 12 + (((tmp & 0xF0) >> 4) | (tmp & 0x80 ? 0xF0 : 0)); pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE; pri_data->x_min = T4_COUNT_PER_ELECTRODE; pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE; pri_data->y_min = T4_COUNT_PER_ELECTRODE; pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0; pri_data->btn_cnt = 1; ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true); if (ret < 0) { dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret); goto exit; } tmp |= 0x02; ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false); if (ret < 0) { dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret); goto exit; } ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1, NULL, T4_I2C_ABS, false); if (ret < 0) { dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret); goto exit; } ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false); if (ret < 0) { dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret); goto exit; } pri_data->max_fingers = 5; pri_data->has_sp = 0; exit: return ret; } static int alps_sp_open(struct input_dev *dev) { struct hid_device *hid = input_get_drvdata(dev); return hid_hw_open(hid); } static void alps_sp_close(struct input_dev *dev) { struct hid_device *hid = input_get_drvdata(dev); hid_hw_close(hid); } static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi) { struct alps_dev *data = hid_get_drvdata(hdev); struct input_dev *input = hi->input, *input2; int ret; int res_x, res_y, i; data->input = input; hid_dbg(hdev, "Opening low level driver\n"); ret = hid_hw_open(hdev); if (ret) return ret; /* Allow incoming hid reports */ hid_device_io_start(hdev); switch (data->dev_type) { case T4: ret = T4_init(hdev, data); break; case U1: ret = u1_init(hdev, data); break; default: break; } if (ret) goto exit; __set_bit(EV_ABS, input->evbit); input_set_abs_params(input, ABS_MT_POSITION_X, data->x_min, data->x_max, 0, 0); input_set_abs_params(input, ABS_MT_POSITION_Y, data->y_min, data->y_max, 0, 0); if (data->x_active_len_mm && data->y_active_len_mm) { res_x = (data->x_max - 1) / data->x_active_len_mm; res_y = (data->y_max - 1) / data->y_active_len_mm; input_abs_set_res(input, ABS_MT_POSITION_X, res_x); input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); } input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0); input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER); __set_bit(EV_KEY, input->evbit); if (data->btn_cnt == 1) __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); for (i = 0; i < data->btn_cnt; i++) __set_bit(BTN_LEFT + i, input->keybit); /* Stick device initialization */ if (data->has_sp) { input2 = input_allocate_device(); if (!input2) { ret = -ENOMEM; goto exit; } data->input2 = input2; input2->phys = input->phys; input2->name = "DualPoint Stick"; input2->id.bustype = BUS_I2C; input2->id.vendor = input->id.vendor; input2->id.product = input->id.product; input2->id.version = input->id.version; input2->dev.parent = input->dev.parent; input_set_drvdata(input2, hdev); input2->open = alps_sp_open; input2->close = alps_sp_close; __set_bit(EV_KEY, input2->evbit); data->sp_btn_cnt = (data->sp_btn_info & 0x0F); for (i = 0; i < data->sp_btn_cnt; i++) __set_bit(BTN_LEFT + i, input2->keybit); __set_bit(EV_REL, input2->evbit); __set_bit(REL_X, input2->relbit); __set_bit(REL_Y, input2->relbit); __set_bit(INPUT_PROP_POINTER, input2->propbit); __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit); if (input_register_device(data->input2)) { input_free_device(input2); ret = -ENOENT; goto exit; } } exit: hid_device_io_stop(hdev); hid_hw_close(hdev); return ret; } static int alps_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { return -1; } static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct alps_dev *data = NULL; int ret; data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL); if (!data) return -ENOMEM; data->hdev = hdev; hid_set_drvdata(hdev, data); hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); return ret; } switch (hdev->product) { case HID_DEVICE_ID_ALPS_T4_BTNLESS: data->dev_type = T4; break; case HID_DEVICE_ID_ALPS_U1_DUAL: case HID_DEVICE_ID_ALPS_U1: case HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY: data->dev_type = U1; break; default: data->dev_type = UNKNOWN; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); if (ret) { hid_err(hdev, "hw start failed\n"); return ret; } return 0; } static const struct hid_device_id alps_id[] = { { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) }, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) }, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY) }, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) }, { } }; MODULE_DEVICE_TABLE(hid, alps_id); static struct hid_driver alps_driver = { .name = "hid-alps", .id_table = alps_id, .probe = alps_probe, .raw_event = alps_raw_event, .input_mapping = alps_input_mapping, .input_configured = alps_input_configured, #ifdef CONFIG_PM .resume = alps_post_resume, .reset_resume = alps_post_reset, #endif }; module_hid_driver(alps_driver); MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>"); MODULE_DESCRIPTION("ALPS HID driver"); MODULE_LICENSE("GPL"); |
| 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | // SPDX-License-Identifier: GPL-2.0-or-later #include <linux/device.h> #include <linux/of_mdio.h> #include <linux/phy.h> #include <linux/stddef.h> struct mdiobus_devres { struct mii_bus *mii; }; static void devm_mdiobus_free(struct device *dev, void *this) { struct mdiobus_devres *dr = this; mdiobus_free(dr->mii); } /** * devm_mdiobus_alloc_size - Resource-managed mdiobus_alloc_size() * @dev: Device to allocate mii_bus for * @sizeof_priv: Space to allocate for private structure * * Managed mdiobus_alloc_size. mii_bus allocated with this function is * automatically freed on driver detach. * * RETURNS: * Pointer to allocated mii_bus on success, NULL on out-of-memory error. */ struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv) { struct mdiobus_devres *dr; dr = devres_alloc(devm_mdiobus_free, sizeof(*dr), GFP_KERNEL); if (!dr) return NULL; dr->mii = mdiobus_alloc_size(sizeof_priv); if (!dr->mii) { devres_free(dr); return NULL; } devres_add(dev, dr); return dr->mii; } EXPORT_SYMBOL(devm_mdiobus_alloc_size); static void devm_mdiobus_unregister(struct device *dev, void *this) { struct mdiobus_devres *dr = this; mdiobus_unregister(dr->mii); } static int mdiobus_devres_match(struct device *dev, void *this, void *match_data) { struct mdiobus_devres *res = this; struct mii_bus *mii = match_data; return mii == res->mii; } /** * __devm_mdiobus_register - Resource-managed variant of mdiobus_register() * @dev: Device to register mii_bus for * @bus: MII bus structure to register * @owner: Owning module * * Returns 0 on success, negative error number on failure. */ int __devm_mdiobus_register(struct device *dev, struct mii_bus *bus, struct module *owner) { struct mdiobus_devres *dr; int ret; if (WARN_ON(!devres_find(dev, devm_mdiobus_free, mdiobus_devres_match, bus))) return -EINVAL; dr = devres_alloc(devm_mdiobus_unregister, sizeof(*dr), GFP_KERNEL); if (!dr) return -ENOMEM; ret = __mdiobus_register(bus, owner); if (ret) { devres_free(dr); return ret; } dr->mii = bus; devres_add(dev, dr); return 0; } EXPORT_SYMBOL(__devm_mdiobus_register); #if IS_ENABLED(CONFIG_OF_MDIO) /** * __devm_of_mdiobus_register - Resource managed variant of of_mdiobus_register() * @dev: Device to register mii_bus for * @mdio: MII bus structure to register * @np: Device node to parse * @owner: Owning module */ int __devm_of_mdiobus_register(struct device *dev, struct mii_bus *mdio, struct device_node *np, struct module *owner) { struct mdiobus_devres *dr; int ret; if (WARN_ON(!devres_find(dev, devm_mdiobus_free, mdiobus_devres_match, mdio))) return -EINVAL; dr = devres_alloc(devm_mdiobus_unregister, sizeof(*dr), GFP_KERNEL); if (!dr) return -ENOMEM; ret = __of_mdiobus_register(mdio, np, owner); if (ret) { devres_free(dr); return ret; } dr->mii = mdio; devres_add(dev, dr); return 0; } EXPORT_SYMBOL(__devm_of_mdiobus_register); #endif /* CONFIG_OF_MDIO */ MODULE_DESCRIPTION("Network MDIO bus devres helpers"); MODULE_LICENSE("GPL"); |
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804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 | // SPDX-License-Identifier: GPL-2.0 /* * Released under the GPLv2 only. */ #include <linux/usb.h> #include <linux/usb/ch9.h> #include <linux/usb/hcd.h> #include <linux/usb/quirks.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/string_choices.h> #include <linux/device.h> #include <asm/byteorder.h> #include "usb.h" #define USB_MAXALTSETTING 128 /* Hard limit */ #define USB_MAXCONFIG 8 /* Arbitrary limit */ static int find_next_descriptor(unsigned char *buffer, int size, int dt1, int dt2, int *num_skipped) { struct usb_descriptor_header *h; int n = 0; unsigned char *buffer0 = buffer; /* Find the next descriptor of type dt1 or dt2 */ while (size > 0) { h = (struct usb_descriptor_header *) buffer; if (h->bDescriptorType == dt1 || h->bDescriptorType == dt2) break; buffer += h->bLength; size -= h->bLength; ++n; } /* Store the number of descriptors skipped and return the * number of bytes skipped */ if (num_skipped) *num_skipped = n; return buffer - buffer0; } static void usb_parse_ssp_isoc_endpoint_companion(struct device *ddev, int cfgno, int inum, int asnum, struct usb_host_endpoint *ep, unsigned char *buffer, int size) { struct usb_ssp_isoc_ep_comp_descriptor *desc; /* * The SuperSpeedPlus Isoc endpoint companion descriptor immediately * follows the SuperSpeed Endpoint Companion descriptor */ desc = (struct usb_ssp_isoc_ep_comp_descriptor *) buffer; if (desc->bDescriptorType != USB_DT_SSP_ISOC_ENDPOINT_COMP || size < USB_DT_SSP_ISOC_EP_COMP_SIZE) { dev_notice(ddev, "Invalid SuperSpeedPlus isoc endpoint companion" "for config %d interface %d altsetting %d ep %d.\n", cfgno, inum, asnum, ep->desc.bEndpointAddress); return; } memcpy(&ep->ssp_isoc_ep_comp, desc, USB_DT_SSP_ISOC_EP_COMP_SIZE); } static void usb_parse_eusb2_isoc_endpoint_companion(struct device *ddev, int cfgno, int inum, int asnum, struct usb_host_endpoint *ep, unsigned char *buffer, int size) { struct usb_eusb2_isoc_ep_comp_descriptor *desc; struct usb_descriptor_header *h; /* * eUSB2 isochronous endpoint companion descriptor for this endpoint * shall be declared before the next endpoint or interface descriptor */ while (size >= USB_DT_EUSB2_ISOC_EP_COMP_SIZE) { h = (struct usb_descriptor_header *)buffer; if (h->bDescriptorType == USB_DT_EUSB2_ISOC_ENDPOINT_COMP) { desc = (struct usb_eusb2_isoc_ep_comp_descriptor *)buffer; ep->eusb2_isoc_ep_comp = *desc; return; } if (h->bDescriptorType == USB_DT_ENDPOINT || h->bDescriptorType == USB_DT_INTERFACE) break; buffer += h->bLength; size -= h->bLength; } dev_notice(ddev, "No eUSB2 isoc ep %d companion for config %d interface %d altsetting %d\n", ep->desc.bEndpointAddress, cfgno, inum, asnum); } static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, int inum, int asnum, struct usb_host_endpoint *ep, unsigned char *buffer, int size) { struct usb_ss_ep_comp_descriptor *desc; int max_tx; /* The SuperSpeed endpoint companion descriptor is supposed to * be the first thing immediately following the endpoint descriptor. */ desc = (struct usb_ss_ep_comp_descriptor *) buffer; if (size < USB_DT_SS_EP_COMP_SIZE) { dev_notice(ddev, "invalid SuperSpeed endpoint companion descriptor " "of length %d, skipping\n", size); return; } if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP) { dev_notice(ddev, "No SuperSpeed endpoint companion for config %d " " interface %d altsetting %d ep %d: " "using minimum values\n", cfgno, inum, asnum, ep->desc.bEndpointAddress); /* Fill in some default values. * Leave bmAttributes as zero, which will mean no streams for * bulk, and isoc won't support multiple bursts of packets. * With bursts of only one packet, and a Mult of 1, the max * amount of data moved per endpoint service interval is one * packet. */ ep->ss_ep_comp.bLength = USB_DT_SS_EP_COMP_SIZE; ep->ss_ep_comp.bDescriptorType = USB_DT_SS_ENDPOINT_COMP; if (usb_endpoint_xfer_isoc(&ep->desc) || usb_endpoint_xfer_int(&ep->desc)) ep->ss_ep_comp.wBytesPerInterval = ep->desc.wMaxPacketSize; return; } buffer += desc->bLength; size -= desc->bLength; memcpy(&ep->ss_ep_comp, desc, USB_DT_SS_EP_COMP_SIZE); /* Check the various values */ if (usb_endpoint_xfer_control(&ep->desc) && desc->bMaxBurst != 0) { dev_notice(ddev, "Control endpoint with bMaxBurst = %d in " "config %d interface %d altsetting %d ep %d: " "setting to zero\n", desc->bMaxBurst, cfgno, inum, asnum, ep->desc.bEndpointAddress); ep->ss_ep_comp.bMaxBurst = 0; } else if (desc->bMaxBurst > 15) { dev_notice(ddev, "Endpoint with bMaxBurst = %d in " "config %d interface %d altsetting %d ep %d: " "setting to 15\n", desc->bMaxBurst, cfgno, inum, asnum, ep->desc.bEndpointAddress); ep->ss_ep_comp.bMaxBurst = 15; } if ((usb_endpoint_xfer_control(&ep->desc) || usb_endpoint_xfer_int(&ep->desc)) && desc->bmAttributes != 0) { dev_notice(ddev, "%s endpoint with bmAttributes = %d in " "config %d interface %d altsetting %d ep %d: " "setting to zero\n", usb_endpoint_xfer_control(&ep->desc) ? "Control" : "Bulk", desc->bmAttributes, cfgno, inum, asnum, ep->desc.bEndpointAddress); ep->ss_ep_comp.bmAttributes = 0; } else if (usb_endpoint_xfer_bulk(&ep->desc) && desc->bmAttributes > 16) { dev_notice(ddev, "Bulk endpoint with more than 65536 streams in " "config %d interface %d altsetting %d ep %d: " "setting to max\n", cfgno, inum, asnum, ep->desc.bEndpointAddress); ep->ss_ep_comp.bmAttributes = 16; } else if (usb_endpoint_xfer_isoc(&ep->desc) && !USB_SS_SSP_ISOC_COMP(desc->bmAttributes) && USB_SS_MULT(desc->bmAttributes) > 3) { dev_notice(ddev, "Isoc endpoint has Mult of %d in " "config %d interface %d altsetting %d ep %d: " "setting to 3\n", USB_SS_MULT(desc->bmAttributes), cfgno, inum, asnum, ep->desc.bEndpointAddress); ep->ss_ep_comp.bmAttributes = 2; } if (usb_endpoint_xfer_isoc(&ep->desc)) max_tx = (desc->bMaxBurst + 1) * (USB_SS_MULT(desc->bmAttributes)) * usb_endpoint_maxp(&ep->desc); else if (usb_endpoint_xfer_int(&ep->desc)) max_tx = usb_endpoint_maxp(&ep->desc) * (desc->bMaxBurst + 1); else max_tx = 999999; if (le16_to_cpu(desc->wBytesPerInterval) > max_tx) { dev_notice(ddev, "%s endpoint with wBytesPerInterval of %d in " "config %d interface %d altsetting %d ep %d: " "setting to %d\n", usb_endpoint_xfer_isoc(&ep->desc) ? "Isoc" : "Int", le16_to_cpu(desc->wBytesPerInterval), cfgno, inum, asnum, ep->desc.bEndpointAddress, max_tx); ep->ss_ep_comp.wBytesPerInterval = cpu_to_le16(max_tx); } /* Parse a possible SuperSpeedPlus isoc ep companion descriptor */ if (usb_endpoint_xfer_isoc(&ep->desc) && USB_SS_SSP_ISOC_COMP(desc->bmAttributes)) usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum, ep, buffer, size); } static const unsigned short low_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 8, [USB_ENDPOINT_XFER_ISOC] = 0, [USB_ENDPOINT_XFER_BULK] = 0, [USB_ENDPOINT_XFER_INT] = 8, }; static const unsigned short full_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 64, [USB_ENDPOINT_XFER_ISOC] = 1023, [USB_ENDPOINT_XFER_BULK] = 64, [USB_ENDPOINT_XFER_INT] = 64, }; static const unsigned short high_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 64, [USB_ENDPOINT_XFER_ISOC] = 1024, /* Bulk should be 512, but some devices use 1024: we will warn below */ [USB_ENDPOINT_XFER_BULK] = 1024, [USB_ENDPOINT_XFER_INT] = 1024, }; static const unsigned short super_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 512, [USB_ENDPOINT_XFER_ISOC] = 1024, [USB_ENDPOINT_XFER_BULK] = 1024, [USB_ENDPOINT_XFER_INT] = 1024, }; static bool endpoint_is_duplicate(struct usb_endpoint_descriptor *e1, struct usb_endpoint_descriptor *e2) { if (e1->bEndpointAddress == e2->bEndpointAddress) return true; if (usb_endpoint_xfer_control(e1) || usb_endpoint_xfer_control(e2)) { if (usb_endpoint_num(e1) == usb_endpoint_num(e2)) return true; } return false; } /* * Check for duplicate endpoint addresses in other interfaces and in the * altsetting currently being parsed. */ static bool config_endpoint_is_duplicate(struct usb_host_config *config, int inum, int asnum, struct usb_endpoint_descriptor *d) { struct usb_endpoint_descriptor *epd; struct usb_interface_cache *intfc; struct usb_host_interface *alt; int i, j, k; for (i = 0; i < config->desc.bNumInterfaces; ++i) { intfc = config->intf_cache[i]; for (j = 0; j < intfc->num_altsetting; ++j) { alt = &intfc->altsetting[j]; if (alt->desc.bInterfaceNumber == inum && alt->desc.bAlternateSetting != asnum) continue; for (k = 0; k < alt->desc.bNumEndpoints; ++k) { epd = &alt->endpoint[k].desc; if (endpoint_is_duplicate(epd, d)) return true; } } } return false; } static int usb_parse_endpoint(struct device *ddev, int cfgno, struct usb_host_config *config, int inum, int asnum, struct usb_host_interface *ifp, int num_ep, unsigned char *buffer, int size) { struct usb_device *udev = to_usb_device(ddev); unsigned char *buffer0 = buffer; struct usb_endpoint_descriptor *d; struct usb_host_endpoint *endpoint; int n, i, j, retval; unsigned int maxp; const unsigned short *maxpacket_maxes; u16 bcdUSB; d = (struct usb_endpoint_descriptor *) buffer; bcdUSB = le16_to_cpu(udev->descriptor.bcdUSB); buffer += d->bLength; size -= d->bLength; if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE) n = USB_DT_ENDPOINT_AUDIO_SIZE; else if (d->bLength >= USB_DT_ENDPOINT_SIZE) n = USB_DT_ENDPOINT_SIZE; else { dev_notice(ddev, "config %d interface %d altsetting %d has an " "invalid endpoint descriptor of length %d, skipping\n", cfgno, inum, asnum, d->bLength); goto skip_to_next_endpoint_or_interface_descriptor; } i = usb_endpoint_num(d); if (i == 0) { dev_notice(ddev, "config %d interface %d altsetting %d has an " "invalid descriptor for endpoint zero, skipping\n", cfgno, inum, asnum); goto skip_to_next_endpoint_or_interface_descriptor; } /* Only store as many endpoints as we have room for */ if (ifp->desc.bNumEndpoints >= num_ep) goto skip_to_next_endpoint_or_interface_descriptor; /* Save a copy of the descriptor and use it instead of the original */ endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints]; memcpy(&endpoint->desc, d, n); d = &endpoint->desc; /* Clear the reserved bits in bEndpointAddress */ i = d->bEndpointAddress & (USB_ENDPOINT_DIR_MASK | USB_ENDPOINT_NUMBER_MASK); if (i != d->bEndpointAddress) { dev_notice(ddev, "config %d interface %d altsetting %d has an endpoint descriptor with address 0x%X, changing to 0x%X\n", cfgno, inum, asnum, d->bEndpointAddress, i); endpoint->desc.bEndpointAddress = i; } /* Check for duplicate endpoint addresses */ if (config_endpoint_is_duplicate(config, inum, asnum, d)) { dev_notice(ddev, "config %d interface %d altsetting %d has a duplicate endpoint with address 0x%X, skipping\n", cfgno, inum, asnum, d->bEndpointAddress); goto skip_to_next_endpoint_or_interface_descriptor; } /* Ignore some endpoints */ if (udev->quirks & USB_QUIRK_ENDPOINT_IGNORE) { if (usb_endpoint_is_ignored(udev, ifp, d)) { dev_notice(ddev, "config %d interface %d altsetting %d has an ignored endpoint with address 0x%X, skipping\n", cfgno, inum, asnum, d->bEndpointAddress); goto skip_to_next_endpoint_or_interface_descriptor; } } /* Accept this endpoint */ ++ifp->desc.bNumEndpoints; INIT_LIST_HEAD(&endpoint->urb_list); /* * Fix up bInterval values outside the legal range. * Use 10 or 8 ms if no proper value can be guessed. */ i = 0; /* i = min, j = max, n = default */ j = 255; if (usb_endpoint_xfer_int(d)) { i = 1; switch (udev->speed) { case USB_SPEED_SUPER_PLUS: case USB_SPEED_SUPER: case USB_SPEED_HIGH: /* * Many device manufacturers are using full-speed * bInterval values in high-speed interrupt endpoint * descriptors. Try to fix those and fall back to an * 8-ms default value otherwise. */ n = fls(d->bInterval*8); if (n == 0) n = 7; /* 8 ms = 2^(7-1) uframes */ j = 16; /* * Adjust bInterval for quirked devices. */ /* * This quirk fixes bIntervals reported in ms. */ if (udev->quirks & USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL) { n = clamp(fls(d->bInterval) + 3, i, j); i = j = n; } /* * This quirk fixes bIntervals reported in * linear microframes. */ if (udev->quirks & USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL) { n = clamp(fls(d->bInterval), i, j); i = j = n; } break; default: /* USB_SPEED_FULL or _LOW */ /* * For low-speed, 10 ms is the official minimum. * But some "overclocked" devices might want faster * polling so we'll allow it. */ n = 10; break; } } else if (usb_endpoint_xfer_isoc(d)) { i = 1; j = 16; switch (udev->speed) { case USB_SPEED_HIGH: n = 7; /* 8 ms = 2^(7-1) uframes */ break; default: /* USB_SPEED_FULL */ n = 4; /* 8 ms = 2^(4-1) frames */ break; } } if (d->bInterval < i || d->bInterval > j) { dev_notice(ddev, "config %d interface %d altsetting %d " "endpoint 0x%X has an invalid bInterval %d, " "changing to %d\n", cfgno, inum, asnum, d->bEndpointAddress, d->bInterval, n); endpoint->desc.bInterval = n; } /* Some buggy low-speed devices have Bulk endpoints, which is * explicitly forbidden by the USB spec. In an attempt to make * them usable, we will try treating them as Interrupt endpoints. */ if (udev->speed == USB_SPEED_LOW && usb_endpoint_xfer_bulk(d)) { dev_notice(ddev, "config %d interface %d altsetting %d " "endpoint 0x%X is Bulk; changing to Interrupt\n", cfgno, inum, asnum, d->bEndpointAddress); endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT; endpoint->desc.bInterval = 1; if (usb_endpoint_maxp(&endpoint->desc) > 8) endpoint->desc.wMaxPacketSize = cpu_to_le16(8); } /* * Validate the wMaxPacketSize field. * eUSB2 devices (see USB 2.0 Double Isochronous IN ECN 9.6.6 Endpoint) * and devices with isochronous endpoints in altsetting 0 (see USB 2.0 * end of section 5.6.3) have wMaxPacketSize = 0. * So don't warn about those. */ maxp = le16_to_cpu(endpoint->desc.wMaxPacketSize); if (maxp == 0 && bcdUSB != 0x0220 && !(usb_endpoint_xfer_isoc(d) && asnum == 0)) dev_notice(ddev, "config %d interface %d altsetting %d endpoint 0x%X has invalid wMaxPacketSize 0\n", cfgno, inum, asnum, d->bEndpointAddress); /* Find the highest legal maxpacket size for this endpoint */ i = 0; /* additional transactions per microframe */ switch (udev->speed) { case USB_SPEED_LOW: maxpacket_maxes = low_speed_maxpacket_maxes; break; case USB_SPEED_FULL: maxpacket_maxes = full_speed_maxpacket_maxes; break; case USB_SPEED_HIGH: /* Multiple-transactions bits are allowed only for HS periodic endpoints */ if (usb_endpoint_xfer_int(d) || usb_endpoint_xfer_isoc(d)) { i = maxp & USB_EP_MAXP_MULT_MASK; maxp &= ~i; } fallthrough; default: maxpacket_maxes = high_speed_maxpacket_maxes; break; case USB_SPEED_SUPER: case USB_SPEED_SUPER_PLUS: maxpacket_maxes = super_speed_maxpacket_maxes; break; } j = maxpacket_maxes[usb_endpoint_type(&endpoint->desc)]; if (maxp > j) { dev_notice(ddev, "config %d interface %d altsetting %d endpoint 0x%X has invalid maxpacket %d, setting to %d\n", cfgno, inum, asnum, d->bEndpointAddress, maxp, j); maxp = j; endpoint->desc.wMaxPacketSize = cpu_to_le16(i | maxp); } /* * Some buggy high speed devices have bulk endpoints using * maxpacket sizes other than 512. High speed HCDs may not * be able to handle that particular bug, so let's warn... */ if (udev->speed == USB_SPEED_HIGH && usb_endpoint_xfer_bulk(d)) { if (maxp != 512) dev_notice(ddev, "config %d interface %d altsetting %d " "bulk endpoint 0x%X has invalid maxpacket %d\n", cfgno, inum, asnum, d->bEndpointAddress, maxp); } /* Parse a possible eUSB2 periodic endpoint companion descriptor */ if (udev->speed == USB_SPEED_HIGH && bcdUSB == 0x0220 && !le16_to_cpu(d->wMaxPacketSize) && usb_endpoint_is_isoc_in(d)) usb_parse_eusb2_isoc_endpoint_companion(ddev, cfgno, inum, asnum, endpoint, buffer, size); /* Parse a possible SuperSpeed endpoint companion descriptor */ if (udev->speed >= USB_SPEED_SUPER) usb_parse_ss_endpoint_companion(ddev, cfgno, inum, asnum, endpoint, buffer, size); /* Skip over any Class Specific or Vendor Specific descriptors; * find the next endpoint or interface descriptor */ endpoint->extra = buffer; i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, USB_DT_INTERFACE, &n); endpoint->extralen = i; retval = buffer - buffer0 + i; if (n > 0) dev_dbg(ddev, "skipped %d descriptor%s after %s\n", n, str_plural(n), "endpoint"); return retval; skip_to_next_endpoint_or_interface_descriptor: i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, USB_DT_INTERFACE, NULL); return buffer - buffer0 + i; } void usb_release_interface_cache(struct kref *ref) { struct usb_interface_cache *intfc = ref_to_usb_interface_cache(ref); int j; for (j = 0; j < intfc->num_altsetting; j++) { struct usb_host_interface *alt = &intfc->altsetting[j]; kfree(alt->endpoint); kfree(alt->string); } kfree(intfc); } static int usb_parse_interface(struct device *ddev, int cfgno, struct usb_host_config *config, unsigned char *buffer, int size, u8 inums[], u8 nalts[]) { unsigned char *buffer0 = buffer; struct usb_interface_descriptor *d; int inum, asnum; struct usb_interface_cache *intfc; struct usb_host_interface *alt; int i, n; int len, retval; int num_ep, num_ep_orig; d = (struct usb_interface_descriptor *) buffer; buffer += d->bLength; size -= d->bLength; if (d->bLength < USB_DT_INTERFACE_SIZE) goto skip_to_next_interface_descriptor; /* Which interface entry is this? */ intfc = NULL; inum = d->bInterfaceNumber; for (i = 0; i < config->desc.bNumInterfaces; ++i) { if (inums[i] == inum) { intfc = config->intf_cache[i]; break; } } if (!intfc || intfc->num_altsetting >= nalts[i]) goto skip_to_next_interface_descriptor; /* Check for duplicate altsetting entries */ asnum = d->bAlternateSetting; for ((i = 0, alt = &intfc->altsetting[0]); i < intfc->num_altsetting; (++i, ++alt)) { if (alt->desc.bAlternateSetting == asnum) { dev_notice(ddev, "Duplicate descriptor for config %d " "interface %d altsetting %d, skipping\n", cfgno, inum, asnum); goto skip_to_next_interface_descriptor; } } ++intfc->num_altsetting; memcpy(&alt->desc, d, USB_DT_INTERFACE_SIZE); /* Skip over any Class Specific or Vendor Specific descriptors; * find the first endpoint or interface descriptor */ alt->extra = buffer; i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, USB_DT_INTERFACE, &n); alt->extralen = i; if (n > 0) dev_dbg(ddev, "skipped %d descriptor%s after %s\n", n, str_plural(n), "interface"); buffer += i; size -= i; /* Allocate space for the right(?) number of endpoints */ num_ep = num_ep_orig = alt->desc.bNumEndpoints; alt->desc.bNumEndpoints = 0; /* Use as a counter */ if (num_ep > USB_MAXENDPOINTS) { dev_notice(ddev, "too many endpoints for config %d interface %d " "altsetting %d: %d, using maximum allowed: %d\n", cfgno, inum, asnum, num_ep, USB_MAXENDPOINTS); num_ep = USB_MAXENDPOINTS; } if (num_ep > 0) { /* Can't allocate 0 bytes */ len = sizeof(struct usb_host_endpoint) * num_ep; alt->endpoint = kzalloc(len, GFP_KERNEL); if (!alt->endpoint) return -ENOMEM; } /* Parse all the endpoint descriptors */ n = 0; while (size > 0) { if (((struct usb_descriptor_header *) buffer)->bDescriptorType == USB_DT_INTERFACE) break; retval = usb_parse_endpoint(ddev, cfgno, config, inum, asnum, alt, num_ep, buffer, size); if (retval < 0) return retval; ++n; buffer += retval; size -= retval; } if (n != num_ep_orig) dev_notice(ddev, "config %d interface %d altsetting %d has %d " "endpoint descriptor%s, different from the interface " "descriptor's value: %d\n", cfgno, inum, asnum, n, str_plural(n), num_ep_orig); return buffer - buffer0; skip_to_next_interface_descriptor: i = find_next_descriptor(buffer, size, USB_DT_INTERFACE, USB_DT_INTERFACE, NULL); return buffer - buffer0 + i; } static int usb_parse_configuration(struct usb_device *dev, int cfgidx, struct usb_host_config *config, unsigned char *buffer, int size) { struct device *ddev = &dev->dev; unsigned char *buffer0 = buffer; int cfgno; int nintf, nintf_orig; int i, j, n; struct usb_interface_cache *intfc; unsigned char *buffer2; int size2; struct usb_descriptor_header *header; int retval; u8 inums[USB_MAXINTERFACES], nalts[USB_MAXINTERFACES]; unsigned iad_num = 0; memcpy(&config->desc, buffer, USB_DT_CONFIG_SIZE); nintf = nintf_orig = config->desc.bNumInterfaces; config->desc.bNumInterfaces = 0; // Adjusted later if (config->desc.bDescriptorType != USB_DT_CONFIG || config->desc.bLength < USB_DT_CONFIG_SIZE || config->desc.bLength > size) { dev_notice(ddev, "invalid descriptor for config index %d: " "type = 0x%X, length = %d\n", cfgidx, config->desc.bDescriptorType, config->desc.bLength); return -EINVAL; } cfgno = config->desc.bConfigurationValue; buffer += config->desc.bLength; size -= config->desc.bLength; if (nintf > USB_MAXINTERFACES) { dev_notice(ddev, "config %d has too many interfaces: %d, " "using maximum allowed: %d\n", cfgno, nintf, USB_MAXINTERFACES); nintf = USB_MAXINTERFACES; } /* Go through the descriptors, checking their length and counting the * number of altsettings for each interface */ n = 0; for ((buffer2 = buffer, size2 = size); size2 > 0; (buffer2 += header->bLength, size2 -= header->bLength)) { if (size2 < sizeof(struct usb_descriptor_header)) { dev_notice(ddev, "config %d descriptor has %d excess " "byte%s, ignoring\n", cfgno, size2, str_plural(size2)); break; } header = (struct usb_descriptor_header *) buffer2; if ((header->bLength > size2) || (header->bLength < 2)) { dev_notice(ddev, "config %d has an invalid descriptor " "of length %d, skipping remainder of the config\n", cfgno, header->bLength); break; } if (header->bDescriptorType == USB_DT_INTERFACE) { struct usb_interface_descriptor *d; int inum; d = (struct usb_interface_descriptor *) header; if (d->bLength < USB_DT_INTERFACE_SIZE) { dev_notice(ddev, "config %d has an invalid " "interface descriptor of length %d, " "skipping\n", cfgno, d->bLength); continue; } inum = d->bInterfaceNumber; if ((dev->quirks & USB_QUIRK_HONOR_BNUMINTERFACES) && n >= nintf_orig) { dev_notice(ddev, "config %d has more interface " "descriptors, than it declares in " "bNumInterfaces, ignoring interface " "number: %d\n", cfgno, inum); continue; } if (inum >= nintf_orig) dev_notice(ddev, "config %d has an invalid " "interface number: %d but max is %d\n", cfgno, inum, nintf_orig - 1); /* Have we already encountered this interface? * Count its altsettings */ for (i = 0; i < n; ++i) { if (inums[i] == inum) break; } if (i < n) { if (nalts[i] < 255) ++nalts[i]; } else if (n < USB_MAXINTERFACES) { inums[n] = inum; nalts[n] = 1; ++n; } } else if (header->bDescriptorType == USB_DT_INTERFACE_ASSOCIATION) { struct usb_interface_assoc_descriptor *d; d = (struct usb_interface_assoc_descriptor *)header; if (d->bLength < USB_DT_INTERFACE_ASSOCIATION_SIZE) { dev_notice(ddev, "config %d has an invalid interface association descriptor of length %d, skipping\n", cfgno, d->bLength); continue; } if (iad_num == USB_MAXIADS) { dev_notice(ddev, "found more Interface " "Association Descriptors " "than allocated for in " "configuration %d\n", cfgno); } else { config->intf_assoc[iad_num] = d; iad_num++; } } else if (header->bDescriptorType == USB_DT_DEVICE || header->bDescriptorType == USB_DT_CONFIG) dev_notice(ddev, "config %d contains an unexpected " "descriptor of type 0x%X, skipping\n", cfgno, header->bDescriptorType); } /* for ((buffer2 = buffer, size2 = size); ...) */ size = buffer2 - buffer; config->desc.wTotalLength = cpu_to_le16(buffer2 - buffer0); if (n != nintf) dev_notice(ddev, "config %d has %d interface%s, different from " "the descriptor's value: %d\n", cfgno, n, str_plural(n), nintf_orig); else if (n == 0) dev_notice(ddev, "config %d has no interfaces?\n", cfgno); config->desc.bNumInterfaces = nintf = n; /* Check for missing interface numbers */ for (i = 0; i < nintf; ++i) { for (j = 0; j < nintf; ++j) { if (inums[j] == i) break; } if (j >= nintf) dev_notice(ddev, "config %d has no interface number " "%d\n", cfgno, i); } /* Allocate the usb_interface_caches and altsetting arrays */ for (i = 0; i < nintf; ++i) { j = nalts[i]; if (j > USB_MAXALTSETTING) { dev_notice(ddev, "too many alternate settings for " "config %d interface %d: %d, " "using maximum allowed: %d\n", cfgno, inums[i], j, USB_MAXALTSETTING); nalts[i] = j = USB_MAXALTSETTING; } intfc = kzalloc(struct_size(intfc, altsetting, j), GFP_KERNEL); config->intf_cache[i] = intfc; if (!intfc) return -ENOMEM; kref_init(&intfc->ref); } /* FIXME: parse the BOS descriptor */ /* Skip over any Class Specific or Vendor Specific descriptors; * find the first interface descriptor */ config->extra = buffer; i = find_next_descriptor(buffer, size, USB_DT_INTERFACE, USB_DT_INTERFACE, &n); config->extralen = i; if (n > 0) dev_dbg(ddev, "skipped %d descriptor%s after %s\n", n, str_plural(n), "configuration"); buffer += i; size -= i; /* Parse all the interface/altsetting descriptors */ while (size > 0) { retval = usb_parse_interface(ddev, cfgno, config, buffer, size, inums, nalts); if (retval < 0) return retval; buffer += retval; size -= retval; } /* Check for missing altsettings */ for (i = 0; i < nintf; ++i) { intfc = config->intf_cache[i]; for (j = 0; j < intfc->num_altsetting; ++j) { for (n = 0; n < intfc->num_altsetting; ++n) { if (intfc->altsetting[n].desc. bAlternateSetting == j) break; } if (n >= intfc->num_altsetting) dev_notice(ddev, "config %d interface %d has no " "altsetting %d\n", cfgno, inums[i], j); } } return 0; } /* hub-only!! ... and only exported for reset/reinit path. * otherwise used internally on disconnect/destroy path */ void usb_destroy_configuration(struct usb_device *dev) { int c, i; if (!dev->config) return; if (dev->rawdescriptors) { for (i = 0; i < dev->descriptor.bNumConfigurations; i++) kfree(dev->rawdescriptors[i]); kfree(dev->rawdescriptors); dev->rawdescriptors = NULL; } for (c = 0; c < dev->descriptor.bNumConfigurations; c++) { struct usb_host_config *cf = &dev->config[c]; kfree(cf->string); for (i = 0; i < cf->desc.bNumInterfaces; i++) { if (cf->intf_cache[i]) kref_put(&cf->intf_cache[i]->ref, usb_release_interface_cache); } } kfree(dev->config); dev->config = NULL; } /* * Get the USB config descriptors, cache and parse'em * * hub-only!! ... and only in reset path, or usb_new_device() * (used by real hubs and virtual root hubs) */ int usb_get_configuration(struct usb_device *dev) { struct device *ddev = &dev->dev; int ncfg = dev->descriptor.bNumConfigurations; unsigned int cfgno, length; unsigned char *bigbuffer; struct usb_config_descriptor *desc; int result; if (ncfg > USB_MAXCONFIG) { dev_notice(ddev, "too many configurations: %d, " "using maximum allowed: %d\n", ncfg, USB_MAXCONFIG); dev->descriptor.bNumConfigurations = ncfg = USB_MAXCONFIG; } if (ncfg < 1) { dev_err(ddev, "no configurations\n"); return -EINVAL; } length = ncfg * sizeof(struct usb_host_config); dev->config = kzalloc(length, GFP_KERNEL); if (!dev->config) return -ENOMEM; length = ncfg * sizeof(char *); dev->rawdescriptors = kzalloc(length, GFP_KERNEL); if (!dev->rawdescriptors) return -ENOMEM; desc = kmalloc(USB_DT_CONFIG_SIZE, GFP_KERNEL); if (!desc) return -ENOMEM; for (cfgno = 0; cfgno < ncfg; cfgno++) { /* We grab just the first descriptor so we know how long * the whole configuration is */ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, desc, USB_DT_CONFIG_SIZE); if (result < 0) { dev_err(ddev, "unable to read config index %d " "descriptor/%s: %d\n", cfgno, "start", result); if (result != -EPIPE) goto err; dev_notice(ddev, "chopping to %d config(s)\n", cfgno); dev->descriptor.bNumConfigurations = cfgno; break; } else if (result < 4) { dev_err(ddev, "config index %d descriptor too short " "(expected %i, got %i)\n", cfgno, USB_DT_CONFIG_SIZE, result); result = -EINVAL; goto err; } length = max_t(int, le16_to_cpu(desc->wTotalLength), USB_DT_CONFIG_SIZE); /* Now that we know the length, get the whole thing */ bigbuffer = kmalloc(length, GFP_KERNEL); if (!bigbuffer) { result = -ENOMEM; goto err; } if (dev->quirks & USB_QUIRK_DELAY_INIT) msleep(200); result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, bigbuffer, length); if (result < 0) { dev_err(ddev, "unable to read config index %d " "descriptor/%s\n", cfgno, "all"); kfree(bigbuffer); goto err; } if (result < length) { dev_notice(ddev, "config index %d descriptor too short " "(expected %i, got %i)\n", cfgno, length, result); length = result; } dev->rawdescriptors[cfgno] = bigbuffer; result = usb_parse_configuration(dev, cfgno, &dev->config[cfgno], bigbuffer, length); if (result < 0) { ++cfgno; goto err; } } err: kfree(desc); dev->descriptor.bNumConfigurations = cfgno; return result; } void usb_release_bos_descriptor(struct usb_device *dev) { if (dev->bos) { kfree(dev->bos->desc); kfree(dev->bos); dev->bos = NULL; } } static const __u8 bos_desc_len[256] = { [USB_CAP_TYPE_WIRELESS_USB] = USB_DT_USB_WIRELESS_CAP_SIZE, [USB_CAP_TYPE_EXT] = USB_DT_USB_EXT_CAP_SIZE, [USB_SS_CAP_TYPE] = USB_DT_USB_SS_CAP_SIZE, [USB_SSP_CAP_TYPE] = USB_DT_USB_SSP_CAP_SIZE(1), [CONTAINER_ID_TYPE] = USB_DT_USB_SS_CONTN_ID_SIZE, [USB_PTM_CAP_TYPE] = USB_DT_USB_PTM_ID_SIZE, }; /* Get BOS descriptor set */ int usb_get_bos_descriptor(struct usb_device *dev) { struct device *ddev = &dev->dev; struct usb_bos_descriptor *bos; struct usb_dev_cap_header *cap; struct usb_ssp_cap_descriptor *ssp_cap; unsigned char *buffer, *buffer0; int length, total_len, num, i, ssac; __u8 cap_type; int ret; bos = kzalloc(sizeof(*bos), GFP_KERNEL); if (!bos) return -ENOMEM; /* Get BOS descriptor */ ret = usb_get_descriptor(dev, USB_DT_BOS, 0, bos, USB_DT_BOS_SIZE); if (ret < USB_DT_BOS_SIZE || bos->bLength < USB_DT_BOS_SIZE) { dev_notice(ddev, "unable to get BOS descriptor or descriptor too short\n"); if (ret >= 0) ret = -ENOMSG; kfree(bos); return ret; } length = bos->bLength; total_len = le16_to_cpu(bos->wTotalLength); num = bos->bNumDeviceCaps; kfree(bos); if (total_len < length) return -EINVAL; dev->bos = kzalloc(sizeof(*dev->bos), GFP_KERNEL); if (!dev->bos) return -ENOMEM; /* Now let's get the whole BOS descriptor set */ buffer = kzalloc(total_len, GFP_KERNEL); if (!buffer) { ret = -ENOMEM; goto err; } dev->bos->desc = (struct usb_bos_descriptor *)buffer; ret = usb_get_descriptor(dev, USB_DT_BOS, 0, buffer, total_len); if (ret < total_len) { dev_notice(ddev, "unable to get BOS descriptor set\n"); if (ret >= 0) ret = -ENOMSG; goto err; } buffer0 = buffer; total_len -= length; buffer += length; for (i = 0; i < num; i++) { cap = (struct usb_dev_cap_header *)buffer; if (total_len < sizeof(*cap) || total_len < cap->bLength) { dev->bos->desc->bNumDeviceCaps = i; break; } cap_type = cap->bDevCapabilityType; length = cap->bLength; if (bos_desc_len[cap_type] && length < bos_desc_len[cap_type]) { dev->bos->desc->bNumDeviceCaps = i; break; } if (cap->bDescriptorType != USB_DT_DEVICE_CAPABILITY) { dev_notice(ddev, "descriptor type invalid, skip\n"); goto skip_to_next_descriptor; } switch (cap_type) { case USB_CAP_TYPE_EXT: dev->bos->ext_cap = (struct usb_ext_cap_descriptor *)buffer; break; case USB_SS_CAP_TYPE: dev->bos->ss_cap = (struct usb_ss_cap_descriptor *)buffer; break; case USB_SSP_CAP_TYPE: ssp_cap = (struct usb_ssp_cap_descriptor *)buffer; ssac = (le32_to_cpu(ssp_cap->bmAttributes) & USB_SSP_SUBLINK_SPEED_ATTRIBS); if (length >= USB_DT_USB_SSP_CAP_SIZE(ssac)) dev->bos->ssp_cap = ssp_cap; break; case CONTAINER_ID_TYPE: dev->bos->ss_id = (struct usb_ss_container_id_descriptor *)buffer; break; case USB_PTM_CAP_TYPE: dev->bos->ptm_cap = (struct usb_ptm_cap_descriptor *)buffer; break; default: break; } skip_to_next_descriptor: total_len -= length; buffer += length; } dev->bos->desc->wTotalLength = cpu_to_le16(buffer - buffer0); return 0; err: usb_release_bos_descriptor(dev); return ret; } |
| 5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | // SPDX-License-Identifier: GPL-2.0-only /*************************************************************************** * Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> * * * * Based on Logitech G13 driver (v0.4) * * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> * * * ***************************************************************************/ #include <linux/hid.h> #include <linux/fb.h> #include <linux/lcd.h> #include "hid-picolcd.h" /* * lcd class device */ static int picolcd_get_contrast(struct lcd_device *ldev) { struct picolcd_data *data = lcd_get_data(ldev); return data->lcd_contrast; } static int picolcd_set_contrast(struct lcd_device *ldev, int contrast) { struct picolcd_data *data = lcd_get_data(ldev); struct hid_report *report = picolcd_out_report(REPORT_CONTRAST, data->hdev); unsigned long flags; if (!report || report->maxfield != 1 || report->field[0]->report_count != 1) return -ENODEV; data->lcd_contrast = contrast & 0x0ff; spin_lock_irqsave(&data->lock, flags); hid_set_field(report->field[0], 0, data->lcd_contrast); if (!(data->status & PICOLCD_FAILED)) hid_hw_request(data->hdev, report, HID_REQ_SET_REPORT); spin_unlock_irqrestore(&data->lock, flags); return 0; } static const struct lcd_ops picolcd_lcdops = { .get_contrast = picolcd_get_contrast, .set_contrast = picolcd_set_contrast, }; int picolcd_init_lcd(struct picolcd_data *data, struct hid_report *report) { struct device *dev = &data->hdev->dev; struct lcd_device *ldev; if (!report) return -ENODEV; if (report->maxfield != 1 || report->field[0]->report_count != 1 || report->field[0]->report_size != 8) { dev_err(dev, "unsupported CONTRAST report"); return -EINVAL; } ldev = lcd_device_register(dev_name(dev), dev, data, &picolcd_lcdops); if (IS_ERR(ldev)) { dev_err(dev, "failed to register LCD\n"); return PTR_ERR(ldev); } ldev->props.max_contrast = 0x0ff; data->lcd_contrast = 0xe5; data->lcd = ldev; picolcd_set_contrast(ldev, 0xe5); return 0; } void picolcd_exit_lcd(struct picolcd_data *data) { struct lcd_device *ldev = data->lcd; data->lcd = NULL; lcd_device_unregister(ldev); } int picolcd_resume_lcd(struct picolcd_data *data) { if (!data->lcd) return 0; return picolcd_set_contrast(data->lcd, data->lcd_contrast); } |
| 2 1 1 1 3 3 2 3 1 2 3 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Force feedback support for PantherLord/GreenAsia based devices * * The devices are distributed under various names and the same USB device ID * can be used in both adapters and actual game controllers. * * 0810:0001 "Twin USB Joystick" * - tested with PantherLord USB/PS2 2in1 Adapter * - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT) * * 0e8f:0003 "GreenAsia Inc. USB Joystick " * - tested with König Gaming gamepad * * 0e8f:0003 "GASIA USB Gamepad" * - another version of the König gamepad * * 0f30:0111 "Saitek Color Rumble Pad" * * Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com> */ /* */ /* #define DEBUG */ #define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg) #include <linux/input.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/hid.h> #include "hid-ids.h" #ifdef CONFIG_PANTHERLORD_FF struct plff_device { struct hid_report *report; s32 maxval; s32 *strong; s32 *weak; }; static int hid_plff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct plff_device *plff = data; int left, right; left = effect->u.rumble.strong_magnitude; right = effect->u.rumble.weak_magnitude; debug("called with 0x%04x 0x%04x", left, right); left = left * plff->maxval / 0xffff; right = right * plff->maxval / 0xffff; *plff->strong = left; *plff->weak = right; debug("running with 0x%02x 0x%02x", left, right); hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT); return 0; } static int plff_init(struct hid_device *hid) { struct plff_device *plff; struct hid_report *report; struct hid_input *hidinput; struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct list_head *report_ptr = report_list; struct input_dev *dev; int error; s32 maxval; s32 *strong; s32 *weak; /* The device contains one output report per physical device, all containing 1 field, which contains 4 ff00.0002 usages and 4 16bit absolute values. The input reports also contain a field which contains 8 ff00.0001 usages and 8 boolean values. Their meaning is currently unknown. A version of the 0e8f:0003 exists that has all the values in separate fields and misses the extra input field, thus resembling Zeroplus (hid-zpff) devices. */ if (list_empty(report_list)) { hid_err(hid, "no output reports found\n"); return -ENODEV; } list_for_each_entry(hidinput, &hid->inputs, list) { report_ptr = report_ptr->next; if (report_ptr == report_list) { hid_err(hid, "required output report is missing\n"); return -ENODEV; } report = list_entry(report_ptr, struct hid_report, list); if (report->maxfield < 1) { hid_err(hid, "no fields in the report\n"); return -ENODEV; } maxval = 0x7f; if (report->field[0]->report_count >= 4) { report->field[0]->value[0] = 0x00; report->field[0]->value[1] = 0x00; strong = &report->field[0]->value[2]; weak = &report->field[0]->value[3]; debug("detected single-field device"); } else if (report->field[0]->maxusage == 1 && report->field[0]->usage[0].hid == (HID_UP_LED | 0x43) && report->maxfield >= 4 && report->field[0]->report_count >= 1 && report->field[1]->report_count >= 1 && report->field[2]->report_count >= 1 && report->field[3]->report_count >= 1) { report->field[0]->value[0] = 0x00; report->field[1]->value[0] = 0x00; strong = &report->field[2]->value[0]; weak = &report->field[3]->value[0]; if (hid->vendor == USB_VENDOR_ID_JESS2) maxval = 0xff; debug("detected 4-field device"); } else { hid_err(hid, "not enough fields or values\n"); return -ENODEV; } plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); if (!plff) return -ENOMEM; dev = hidinput->input; set_bit(FF_RUMBLE, dev->ffbit); error = input_ff_create_memless(dev, plff, hid_plff_play); if (error) { kfree(plff); return error; } plff->report = report; plff->strong = strong; plff->weak = weak; plff->maxval = maxval; *strong = 0x00; *weak = 0x00; hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT); } hid_info(hid, "Force feedback for PantherLord/GreenAsia devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); return 0; } #else static inline int plff_init(struct hid_device *hid) { return 0; } #endif static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; if (id->driver_data) hdev->quirks |= HID_QUIRK_MULTI_INPUT; ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); goto err; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); if (ret) { hid_err(hdev, "hw start failed\n"); goto err; } plff_init(hdev); return 0; err: return ret; } static const struct hid_device_id pl_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR), .driver_data = 1 }, /* Twin USB Joystick */ { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR), .driver_data = 1 }, /* Twin USB Joystick */ { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD), }, { } }; MODULE_DEVICE_TABLE(hid, pl_devices); static struct hid_driver pl_driver = { .name = "pantherlord", .id_table = pl_devices, .probe = pl_probe, }; module_hid_driver(pl_driver); MODULE_DESCRIPTION("Force feedback support for PantherLord/GreenAsia based devices"); MODULE_LICENSE("GPL"); |
| 20 20 20 19 18 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 | // SPDX-License-Identifier: GPL-2.0-only /* * lib/hexdump.c */ #include <linux/types.h> #include <linux/ctype.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/minmax.h> #include <linux/export.h> #include <linux/unaligned.h> const char hex_asc[] = "0123456789abcdef"; EXPORT_SYMBOL(hex_asc); const char hex_asc_upper[] = "0123456789ABCDEF"; EXPORT_SYMBOL(hex_asc_upper); /** * hex_to_bin - convert a hex digit to its real value * @ch: ascii character represents hex digit * * hex_to_bin() converts one hex digit to its actual value or -1 in case of bad * input. * * This function is used to load cryptographic keys, so it is coded in such a * way that there are no conditions or memory accesses that depend on data. * * Explanation of the logic: * (ch - '9' - 1) is negative if ch <= '9' * ('0' - 1 - ch) is negative if ch >= '0' * we "and" these two values, so the result is negative if ch is in the range * '0' ... '9' * we are only interested in the sign, so we do a shift ">> 8"; note that right * shift of a negative value is implementation-defined, so we cast the * value to (unsigned) before the shift --- we have 0xffffff if ch is in * the range '0' ... '9', 0 otherwise * we "and" this value with (ch - '0' + 1) --- we have a value 1 ... 10 if ch is * in the range '0' ... '9', 0 otherwise * we add this value to -1 --- we have a value 0 ... 9 if ch is in the range '0' * ... '9', -1 otherwise * the next line is similar to the previous one, but we need to decode both * uppercase and lowercase letters, so we use (ch & 0xdf), which converts * lowercase to uppercase */ int hex_to_bin(unsigned char ch) { unsigned char cu = ch & 0xdf; return -1 + ((ch - '0' + 1) & (unsigned)((ch - '9' - 1) & ('0' - 1 - ch)) >> 8) + ((cu - 'A' + 11) & (unsigned)((cu - 'F' - 1) & ('A' - 1 - cu)) >> 8); } EXPORT_SYMBOL(hex_to_bin); /** * hex2bin - convert an ascii hexadecimal string to its binary representation * @dst: binary result * @src: ascii hexadecimal string * @count: result length * * Return 0 on success, -EINVAL in case of bad input. */ int hex2bin(u8 *dst, const char *src, size_t count) { while (count--) { int hi, lo; hi = hex_to_bin(*src++); if (unlikely(hi < 0)) return -EINVAL; lo = hex_to_bin(*src++); if (unlikely(lo < 0)) return -EINVAL; *dst++ = (hi << 4) | lo; } return 0; } EXPORT_SYMBOL(hex2bin); /** * bin2hex - convert binary data to an ascii hexadecimal string * @dst: ascii hexadecimal result * @src: binary data * @count: binary data length */ char *bin2hex(char *dst, const void *src, size_t count) { const unsigned char *_src = src; while (count--) dst = hex_byte_pack(dst, *_src++); return dst; } EXPORT_SYMBOL(bin2hex); /** * hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory * @buf: data blob to dump * @len: number of bytes in the @buf * @rowsize: number of bytes to print per line; must be 16 or 32 * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) * @linebuf: where to put the converted data * @linebuflen: total size of @linebuf, including space for terminating NUL * @ascii: include ASCII after the hex output * * hex_dump_to_buffer() works on one "line" of output at a time, i.e., * 16 or 32 bytes of input data converted to hex + ASCII output. * * Given a buffer of u8 data, hex_dump_to_buffer() converts the input data * to a hex + ASCII dump at the supplied memory location. * The converted output is always NUL-terminated. * * E.g.: * hex_dump_to_buffer(frame->data, frame->len, 16, 1, * linebuf, sizeof(linebuf), true); * * example output buffer: * 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO * * Return: * The amount of bytes placed in the buffer without terminating NUL. If the * output was truncated, then the return value is the number of bytes * (excluding the terminating NUL) which would have been written to the final * string if enough space had been available. */ int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, int groupsize, char *linebuf, size_t linebuflen, bool ascii) { const u8 *ptr = buf; int ngroups; u8 ch; int j, lx = 0; int ascii_column; int ret; if (rowsize != 16 && rowsize != 32) rowsize = 16; if (len > rowsize) /* limit to one line at a time */ len = rowsize; if (!is_power_of_2(groupsize) || groupsize > 8) groupsize = 1; if ((len % groupsize) != 0) /* no mixed size output */ groupsize = 1; ngroups = len / groupsize; ascii_column = rowsize * 2 + rowsize / groupsize + 1; if (!linebuflen) goto overflow1; if (!len) goto nil; if (groupsize == 8) { const u64 *ptr8 = buf; for (j = 0; j < ngroups; j++) { ret = snprintf(linebuf + lx, linebuflen - lx, "%s%16.16llx", j ? " " : "", get_unaligned(ptr8 + j)); if (ret >= linebuflen - lx) goto overflow1; lx += ret; } } else if (groupsize == 4) { const u32 *ptr4 = buf; for (j = 0; j < ngroups; j++) { ret = snprintf(linebuf + lx, linebuflen - lx, "%s%8.8x", j ? " " : "", get_unaligned(ptr4 + j)); if (ret >= linebuflen - lx) goto overflow1; lx += ret; } } else if (groupsize == 2) { const u16 *ptr2 = buf; for (j = 0; j < ngroups; j++) { ret = snprintf(linebuf + lx, linebuflen - lx, "%s%4.4x", j ? " " : "", get_unaligned(ptr2 + j)); if (ret >= linebuflen - lx) goto overflow1; lx += ret; } } else { for (j = 0; j < len; j++) { if (linebuflen < lx + 2) goto overflow2; ch = ptr[j]; linebuf[lx++] = hex_asc_hi(ch); if (linebuflen < lx + 2) goto overflow2; linebuf[lx++] = hex_asc_lo(ch); if (linebuflen < lx + 2) goto overflow2; linebuf[lx++] = ' '; } if (j) lx--; } if (!ascii) goto nil; while (lx < ascii_column) { if (linebuflen < lx + 2) goto overflow2; linebuf[lx++] = ' '; } for (j = 0; j < len; j++) { if (linebuflen < lx + 2) goto overflow2; ch = ptr[j]; linebuf[lx++] = (isascii(ch) && isprint(ch)) ? ch : '.'; } nil: linebuf[lx] = '\0'; return lx; overflow2: linebuf[lx++] = '\0'; overflow1: return ascii ? ascii_column + len : (groupsize * 2 + 1) * ngroups - 1; } EXPORT_SYMBOL(hex_dump_to_buffer); #ifdef CONFIG_PRINTK /** * print_hex_dump - print a text hex dump to syslog for a binary blob of data * @level: kernel log level (e.g. KERN_DEBUG) * @prefix_str: string to prefix each line with; * caller supplies trailing spaces for alignment if desired * @prefix_type: controls whether prefix of an offset, address, or none * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE) * @rowsize: number of bytes to print per line; must be 16 or 32 * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) * @buf: data blob to dump * @len: number of bytes in the @buf * @ascii: include ASCII after the hex output * * Given a buffer of u8 data, print_hex_dump() prints a hex + ASCII dump * to the kernel log at the specified kernel log level, with an optional * leading prefix. * * print_hex_dump() works on one "line" of output at a time, i.e., * 16 or 32 bytes of input data converted to hex + ASCII output. * print_hex_dump() iterates over the entire input @buf, breaking it into * "line size" chunks to format and print. * * E.g.: * print_hex_dump(KERN_DEBUG, "raw data: ", DUMP_PREFIX_ADDRESS, * 16, 1, frame->data, frame->len, true); * * Example output using %DUMP_PREFIX_OFFSET and 1-byte mode: * 0009ab42: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO * Example output using %DUMP_PREFIX_ADDRESS and 4-byte mode: * ffffffff88089af0: 73727170 77767574 7b7a7978 7f7e7d7c pqrstuvwxyz{|}~. */ void print_hex_dump(const char *level, const char *prefix_str, int prefix_type, int rowsize, int groupsize, const void *buf, size_t len, bool ascii) { const u8 *ptr = buf; int i, linelen, remaining = len; unsigned char linebuf[32 * 3 + 2 + 32 + 1]; if (rowsize != 16 && rowsize != 32) rowsize = 16; for (i = 0; i < len; i += rowsize) { linelen = min(remaining, rowsize); remaining -= rowsize; hex_dump_to_buffer(ptr + i, linelen, rowsize, groupsize, linebuf, sizeof(linebuf), ascii); switch (prefix_type) { case DUMP_PREFIX_ADDRESS: printk("%s%s%p: %s\n", level, prefix_str, ptr + i, linebuf); break; case DUMP_PREFIX_OFFSET: printk("%s%s%.8x: %s\n", level, prefix_str, i, linebuf); break; default: printk("%s%s%s\n", level, prefix_str, linebuf); break; } } } EXPORT_SYMBOL(print_hex_dump); #endif /* defined(CONFIG_PRINTK) */ |
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3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 1999 Eric Youngdale * Copyright (C) 2014 Christoph Hellwig * * SCSI queueing library. * Initial versions: Eric Youngdale (eric@andante.org). * Based upon conversations with large numbers * of people at Linux Expo. */ #include <linux/bio.h> #include <linux/bitops.h> #include <linux/blkdev.h> #include <linux/completion.h> #include <linux/kernel.h> #include <linux/export.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/delay.h> #include <linux/hardirq.h> #include <linux/scatterlist.h> #include <linux/blk-mq.h> #include <linux/blk-integrity.h> #include <linux/ratelimit.h> #include <linux/unaligned.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_dbg.h> #include <scsi/scsi_device.h> #include <scsi/scsi_driver.h> #include <scsi/scsi_eh.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> /* scsi_init_limits() */ #include <scsi/scsi_dh.h> #include <trace/events/scsi.h> #include "scsi_debugfs.h" #include "scsi_priv.h" #include "scsi_logging.h" /* * Size of integrity metadata is usually small, 1 inline sg should * cover normal cases. */ #ifdef CONFIG_ARCH_NO_SG_CHAIN #define SCSI_INLINE_PROT_SG_CNT 0 #define SCSI_INLINE_SG_CNT 0 #else #define SCSI_INLINE_PROT_SG_CNT 1 #define SCSI_INLINE_SG_CNT 2 #endif static struct kmem_cache *scsi_sense_cache; static DEFINE_MUTEX(scsi_sense_cache_mutex); static void scsi_mq_uninit_cmd(struct scsi_cmnd *cmd); int scsi_init_sense_cache(struct Scsi_Host *shost) { int ret = 0; mutex_lock(&scsi_sense_cache_mutex); if (!scsi_sense_cache) { scsi_sense_cache = kmem_cache_create_usercopy("scsi_sense_cache", SCSI_SENSE_BUFFERSIZE, 0, SLAB_HWCACHE_ALIGN, 0, SCSI_SENSE_BUFFERSIZE, NULL); if (!scsi_sense_cache) ret = -ENOMEM; } mutex_unlock(&scsi_sense_cache_mutex); return ret; } static void scsi_set_blocked(struct scsi_cmnd *cmd, int reason) { struct Scsi_Host *host = cmd->device->host; struct scsi_device *device = cmd->device; struct scsi_target *starget = scsi_target(device); /* * Set the appropriate busy bit for the device/host. * * If the host/device isn't busy, assume that something actually * completed, and that we should be able to queue a command now. * * Note that the prior mid-layer assumption that any host could * always queue at least one command is now broken. The mid-layer * will implement a user specifiable stall (see * scsi_host.max_host_blocked and scsi_device.max_device_blocked) * if a command is requeued with no other commands outstanding * either for the device or for the host. */ switch (reason) { case SCSI_MLQUEUE_HOST_BUSY: atomic_set(&host->host_blocked, host->max_host_blocked); break; case SCSI_MLQUEUE_DEVICE_BUSY: case SCSI_MLQUEUE_EH_RETRY: atomic_set(&device->device_blocked, device->max_device_blocked); break; case SCSI_MLQUEUE_TARGET_BUSY: atomic_set(&starget->target_blocked, starget->max_target_blocked); break; } } static void scsi_mq_requeue_cmd(struct scsi_cmnd *cmd, unsigned long msecs) { struct request *rq = scsi_cmd_to_rq(cmd); if (rq->rq_flags & RQF_DONTPREP) { rq->rq_flags &= ~RQF_DONTPREP; scsi_mq_uninit_cmd(cmd); } else { WARN_ON_ONCE(true); } blk_mq_requeue_request(rq, false); if (!scsi_host_in_recovery(cmd->device->host)) blk_mq_delay_kick_requeue_list(rq->q, msecs); } /** * __scsi_queue_insert - private queue insertion * @cmd: The SCSI command being requeued * @reason: The reason for the requeue * @unbusy: Whether the queue should be unbusied * * This is a private queue insertion. The public interface * scsi_queue_insert() always assumes the queue should be unbusied * because it's always called before the completion. This function is * for a requeue after completion, which should only occur in this * file. */ static void __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, bool unbusy) { struct scsi_device *device = cmd->device; SCSI_LOG_MLQUEUE(1, scmd_printk(KERN_INFO, cmd, "Inserting command %p into mlqueue\n", cmd)); scsi_set_blocked(cmd, reason); /* * Decrement the counters, since these commands are no longer * active on the host/device. */ if (unbusy) scsi_device_unbusy(device, cmd); /* * Requeue this command. It will go before all other commands * that are already in the queue. Schedule requeue work under * lock such that the kblockd_schedule_work() call happens * before blk_mq_destroy_queue() finishes. */ cmd->result = 0; blk_mq_requeue_request(scsi_cmd_to_rq(cmd), !scsi_host_in_recovery(cmd->device->host)); } /** * scsi_queue_insert - Reinsert a command in the queue. * @cmd: command that we are adding to queue. * @reason: why we are inserting command to queue. * * We do this for one of two cases. Either the host is busy and it cannot accept * any more commands for the time being, or the device returned QUEUE_FULL and * can accept no more commands. * * Context: This could be called either from an interrupt context or a normal * process context. */ void scsi_queue_insert(struct scsi_cmnd *cmd, int reason) { __scsi_queue_insert(cmd, reason, true); } /** * scsi_failures_reset_retries - reset all failures to zero * @failures: &struct scsi_failures with specific failure modes set */ void scsi_failures_reset_retries(struct scsi_failures *failures) { struct scsi_failure *failure; failures->total_retries = 0; for (failure = failures->failure_definitions; failure->result; failure++) failure->retries = 0; } EXPORT_SYMBOL_GPL(scsi_failures_reset_retries); /** * scsi_check_passthrough - Determine if passthrough scsi_cmnd needs a retry. * @scmd: scsi_cmnd to check. * @failures: scsi_failures struct that lists failures to check for. * * Returns -EAGAIN if the caller should retry else 0. */ static int scsi_check_passthrough(struct scsi_cmnd *scmd, struct scsi_failures *failures) { struct scsi_failure *failure; struct scsi_sense_hdr sshdr; enum sam_status status; if (!scmd->result) return 0; if (!failures) return 0; for (failure = failures->failure_definitions; failure->result; failure++) { if (failure->result == SCMD_FAILURE_RESULT_ANY) goto maybe_retry; if (host_byte(scmd->result) && host_byte(scmd->result) == host_byte(failure->result)) goto maybe_retry; status = status_byte(scmd->result); if (!status) continue; if (failure->result == SCMD_FAILURE_STAT_ANY && !scsi_status_is_good(scmd->result)) goto maybe_retry; if (status != status_byte(failure->result)) continue; if (status_byte(failure->result) != SAM_STAT_CHECK_CONDITION || failure->sense == SCMD_FAILURE_SENSE_ANY) goto maybe_retry; if (!scsi_command_normalize_sense(scmd, &sshdr)) return 0; if (failure->sense != sshdr.sense_key) continue; if (failure->asc == SCMD_FAILURE_ASC_ANY) goto maybe_retry; if (failure->asc != sshdr.asc) continue; if (failure->ascq == SCMD_FAILURE_ASCQ_ANY || failure->ascq == sshdr.ascq) goto maybe_retry; } return 0; maybe_retry: if (failure->allowed) { if (failure->allowed == SCMD_FAILURE_NO_LIMIT || ++failure->retries <= failure->allowed) return -EAGAIN; } else { if (failures->total_allowed == SCMD_FAILURE_NO_LIMIT || ++failures->total_retries <= failures->total_allowed) return -EAGAIN; } return 0; } /** * scsi_execute_cmd - insert request and wait for the result * @sdev: scsi_device * @cmd: scsi command * @opf: block layer request cmd_flags * @buffer: data buffer * @bufflen: len of buffer * @timeout: request timeout in HZ * @ml_retries: number of times SCSI midlayer will retry request * @args: Optional args. See struct definition for field descriptions * * Returns the scsi_cmnd result field if a command was executed, or a negative * Linux error code if we didn't get that far. */ int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd, blk_opf_t opf, void *buffer, unsigned int bufflen, int timeout, int ml_retries, const struct scsi_exec_args *args) { static const struct scsi_exec_args default_args; struct request *req; struct scsi_cmnd *scmd; int ret; if (!args) args = &default_args; else if (WARN_ON_ONCE(args->sense && args->sense_len != SCSI_SENSE_BUFFERSIZE)) return -EINVAL; retry: req = scsi_alloc_request(sdev->request_queue, opf, args->req_flags); if (IS_ERR(req)) return PTR_ERR(req); if (bufflen) { ret = blk_rq_map_kern(req, buffer, bufflen, GFP_NOIO); if (ret) goto out; } scmd = blk_mq_rq_to_pdu(req); scmd->cmd_len = COMMAND_SIZE(cmd[0]); memcpy(scmd->cmnd, cmd, scmd->cmd_len); scmd->allowed = ml_retries; scmd->flags |= args->scmd_flags; req->timeout = timeout; req->rq_flags |= RQF_QUIET; /* * head injection *required* here otherwise quiesce won't work */ blk_execute_rq(req, true); if (scsi_check_passthrough(scmd, args->failures) == -EAGAIN) { blk_mq_free_request(req); goto retry; } /* * Some devices (USB mass-storage in particular) may transfer * garbage data together with a residue indicating that the data * is invalid. Prevent the garbage from being misinterpreted * and prevent security leaks by zeroing out the excess data. */ if (unlikely(scmd->resid_len > 0 && scmd->resid_len <= bufflen)) memset(buffer + bufflen - scmd->resid_len, 0, scmd->resid_len); if (args->resid) *args->resid = scmd->resid_len; if (args->sense) memcpy(args->sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); if (args->sshdr) scsi_normalize_sense(scmd->sense_buffer, scmd->sense_len, args->sshdr); ret = scmd->result; out: blk_mq_free_request(req); return ret; } EXPORT_SYMBOL(scsi_execute_cmd); /* * Wake up the error handler if necessary. Avoid as follows that the error * handler is not woken up if host in-flight requests number == * shost->host_failed: use call_rcu() in scsi_eh_scmd_add() in combination * with an RCU read lock in this function to ensure that this function in * its entirety either finishes before scsi_eh_scmd_add() increases the * host_failed counter or that it notices the shost state change made by * scsi_eh_scmd_add(). */ static void scsi_dec_host_busy(struct Scsi_Host *shost, struct scsi_cmnd *cmd) { unsigned long flags; rcu_read_lock(); __clear_bit(SCMD_STATE_INFLIGHT, &cmd->state); if (unlikely(scsi_host_in_recovery(shost))) { unsigned int busy = scsi_host_busy(shost); spin_lock_irqsave(shost->host_lock, flags); if (shost->host_failed || shost->host_eh_scheduled) scsi_eh_wakeup(shost, busy); spin_unlock_irqrestore(shost->host_lock, flags); } rcu_read_unlock(); } void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd) { struct Scsi_Host *shost = sdev->host; struct scsi_target *starget = scsi_target(sdev); scsi_dec_host_busy(shost, cmd); if (starget->can_queue > 0) atomic_dec(&starget->target_busy); sbitmap_put(&sdev->budget_map, cmd->budget_token); cmd->budget_token = -1; } /* * Kick the queue of SCSI device @sdev if @sdev != current_sdev. Called with * interrupts disabled. */ static void scsi_kick_sdev_queue(struct scsi_device *sdev, void *data) { struct scsi_device *current_sdev = data; if (sdev != current_sdev) blk_mq_run_hw_queues(sdev->request_queue, true); } /* * Called for single_lun devices on IO completion. Clear starget_sdev_user, * and call blk_run_queue for all the scsi_devices on the target - * including current_sdev first. * * Called with *no* scsi locks held. */ static void scsi_single_lun_run(struct scsi_device *current_sdev) { struct Scsi_Host *shost = current_sdev->host; struct scsi_target *starget = scsi_target(current_sdev); unsigned long flags; spin_lock_irqsave(shost->host_lock, flags); starget->starget_sdev_user = NULL; spin_unlock_irqrestore(shost->host_lock, flags); /* * Call blk_run_queue for all LUNs on the target, starting with * current_sdev. We race with others (to set starget_sdev_user), * but in most cases, we will be first. Ideally, each LU on the * target would get some limited time or requests on the target. */ blk_mq_run_hw_queues(current_sdev->request_queue, shost->queuecommand_may_block); spin_lock_irqsave(shost->host_lock, flags); if (!starget->starget_sdev_user) __starget_for_each_device(starget, current_sdev, scsi_kick_sdev_queue); spin_unlock_irqrestore(shost->host_lock, flags); } static inline bool scsi_device_is_busy(struct scsi_device *sdev) { if (scsi_device_busy(sdev) >= sdev->queue_depth) return true; if (atomic_read(&sdev->device_blocked) > 0) return true; return false; } static inline bool scsi_target_is_busy(struct scsi_target *starget) { if (starget->can_queue > 0) { if (atomic_read(&starget->target_busy) >= starget->can_queue) return true; if (atomic_read(&starget->target_blocked) > 0) return true; } return false; } static inline bool scsi_host_is_busy(struct Scsi_Host *shost) { if (atomic_read(&shost->host_blocked) > 0) return true; if (shost->host_self_blocked) return true; return false; } static void scsi_starved_list_run(struct Scsi_Host *shost) { LIST_HEAD(starved_list); struct scsi_device *sdev; unsigned long flags; spin_lock_irqsave(shost->host_lock, flags); list_splice_init(&shost->starved_list, &starved_list); while (!list_empty(&starved_list)) { struct request_queue *slq; /* * As long as shost is accepting commands and we have * starved queues, call blk_run_queue. scsi_request_fn * drops the queue_lock and can add us back to the * starved_list. * * host_lock protects the starved_list and starved_entry. * scsi_request_fn must get the host_lock before checking * or modifying starved_list or starved_entry. */ if (scsi_host_is_busy(shost)) break; sdev = list_entry(starved_list.next, struct scsi_device, starved_entry); list_del_init(&sdev->starved_entry); if (scsi_target_is_busy(scsi_target(sdev))) { list_move_tail(&sdev->starved_entry, &shost->starved_list); continue; } /* * Once we drop the host lock, a racing scsi_remove_device() * call may remove the sdev from the starved list and destroy * it and the queue. Mitigate by taking a reference to the * queue and never touching the sdev again after we drop the * host lock. Note: if __scsi_remove_device() invokes * blk_mq_destroy_queue() before the queue is run from this * function then blk_run_queue() will return immediately since * blk_mq_destroy_queue() marks the queue with QUEUE_FLAG_DYING. */ slq = sdev->request_queue; if (!blk_get_queue(slq)) continue; spin_unlock_irqrestore(shost->host_lock, flags); blk_mq_run_hw_queues(slq, false); blk_put_queue(slq); spin_lock_irqsave(shost->host_lock, flags); } /* put any unprocessed entries back */ list_splice(&starved_list, &shost->starved_list); spin_unlock_irqrestore(shost->host_lock, flags); } /** * scsi_run_queue - Select a proper request queue to serve next. * @q: last request's queue * * The previous command was completely finished, start a new one if possible. */ static void scsi_run_queue(struct request_queue *q) { struct scsi_device *sdev = q->queuedata; if (scsi_target(sdev)->single_lun) scsi_single_lun_run(sdev); if (!list_empty(&sdev->host->starved_list)) scsi_starved_list_run(sdev->host); /* Note: blk_mq_kick_requeue_list() runs the queue asynchronously. */ blk_mq_kick_requeue_list(q); } void scsi_requeue_run_queue(struct work_struct *work) { struct scsi_device *sdev; struct request_queue *q; sdev = container_of(work, struct scsi_device, requeue_work); q = sdev->request_queue; scsi_run_queue(q); } void scsi_run_host_queues(struct Scsi_Host *shost) { struct scsi_device *sdev; shost_for_each_device(sdev, shost) scsi_run_queue(sdev->request_queue); } static void scsi_uninit_cmd(struct scsi_cmnd *cmd) { if (!blk_rq_is_passthrough(scsi_cmd_to_rq(cmd))) { struct scsi_driver *drv = scsi_cmd_to_driver(cmd); if (drv->uninit_command) drv->uninit_command(cmd); } } void scsi_free_sgtables(struct scsi_cmnd *cmd) { if (cmd->sdb.table.nents) sg_free_table_chained(&cmd->sdb.table, SCSI_INLINE_SG_CNT); if (scsi_prot_sg_count(cmd)) sg_free_table_chained(&cmd->prot_sdb->table, SCSI_INLINE_PROT_SG_CNT); } EXPORT_SYMBOL_GPL(scsi_free_sgtables); static void scsi_mq_uninit_cmd(struct scsi_cmnd *cmd) { scsi_free_sgtables(cmd); scsi_uninit_cmd(cmd); } static void scsi_run_queue_async(struct scsi_device *sdev) { if (scsi_host_in_recovery(sdev->host)) return; if (scsi_target(sdev)->single_lun || !list_empty(&sdev->host->starved_list)) { kblockd_schedule_work(&sdev->requeue_work); } else { /* * smp_mb() present in sbitmap_queue_clear() or implied in * .end_io is for ordering writing .device_busy in * scsi_device_unbusy() and reading sdev->restarts. */ int old = atomic_read(&sdev->restarts); /* * ->restarts has to be kept as non-zero if new budget * contention occurs. * * No need to run queue when either another re-run * queue wins in updating ->restarts or a new budget * contention occurs. */ if (old && atomic_cmpxchg(&sdev->restarts, old, 0) == old) blk_mq_run_hw_queues(sdev->request_queue, true); } } /* Returns false when no more bytes to process, true if there are more */ static bool scsi_end_request(struct request *req, blk_status_t error, unsigned int bytes) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req); struct scsi_device *sdev = cmd->device; struct request_queue *q = sdev->request_queue; if (blk_update_request(req, error, bytes)) return true; if (q->limits.features & BLK_FEAT_ADD_RANDOM) add_disk_randomness(req->q->disk); WARN_ON_ONCE(!blk_rq_is_passthrough(req) && !(cmd->flags & SCMD_INITIALIZED)); cmd->flags = 0; /* * Calling rcu_barrier() is not necessary here because the * SCSI error handler guarantees that the function called by * call_rcu() has been called before scsi_end_request() is * called. */ destroy_rcu_head(&cmd->rcu); /* * In the MQ case the command gets freed by __blk_mq_end_request, * so we have to do all cleanup that depends on it earlier. * * We also can't kick the queues from irq context, so we * will have to defer it to a workqueue. */ scsi_mq_uninit_cmd(cmd); /* * queue is still alive, so grab the ref for preventing it * from being cleaned up during running queue. */ percpu_ref_get(&q->q_usage_counter); __blk_mq_end_request(req, error); scsi_run_queue_async(sdev); percpu_ref_put(&q->q_usage_counter); return false; } /** * scsi_result_to_blk_status - translate a SCSI result code into blk_status_t * @result: scsi error code * * Translate a SCSI result code into a blk_status_t value. */ static blk_status_t scsi_result_to_blk_status(int result) { /* * Check the scsi-ml byte first in case we converted a host or status * byte. */ switch (scsi_ml_byte(result)) { case SCSIML_STAT_OK: break; case SCSIML_STAT_RESV_CONFLICT: return BLK_STS_RESV_CONFLICT; case SCSIML_STAT_NOSPC: return BLK_STS_NOSPC; case SCSIML_STAT_MED_ERROR: return BLK_STS_MEDIUM; case SCSIML_STAT_TGT_FAILURE: return BLK_STS_TARGET; case SCSIML_STAT_DL_TIMEOUT: return BLK_STS_DURATION_LIMIT; } switch (host_byte(result)) { case DID_OK: if (scsi_status_is_good(result)) return BLK_STS_OK; return BLK_STS_IOERR; case DID_TRANSPORT_FAILFAST: case DID_TRANSPORT_MARGINAL: return BLK_STS_TRANSPORT; default: return BLK_STS_IOERR; } } /** * scsi_rq_err_bytes - determine number of bytes till the next failure boundary * @rq: request to examine * * Description: * A request could be merge of IOs which require different failure * handling. This function determines the number of bytes which * can be failed from the beginning of the request without * crossing into area which need to be retried further. * * Return: * The number of bytes to fail. */ static unsigned int scsi_rq_err_bytes(const struct request *rq) { blk_opf_t ff = rq->cmd_flags & REQ_FAILFAST_MASK; unsigned int bytes = 0; struct bio *bio; if (!(rq->rq_flags & RQF_MIXED_MERGE)) return blk_rq_bytes(rq); /* * Currently the only 'mixing' which can happen is between * different fastfail types. We can safely fail portions * which have all the failfast bits that the first one has - * the ones which are at least as eager to fail as the first * one. */ for (bio = rq->bio; bio; bio = bio->bi_next) { if ((bio->bi_opf & ff) != ff) break; bytes += bio->bi_iter.bi_size; } /* this could lead to infinite loop */ BUG_ON(blk_rq_bytes(rq) && !bytes); return bytes; } static bool scsi_cmd_runtime_exceeced(struct scsi_cmnd *cmd) { struct request *req = scsi_cmd_to_rq(cmd); unsigned long wait_for; if (cmd->allowed == SCSI_CMD_RETRIES_NO_LIMIT) return false; wait_for = (cmd->allowed + 1) * req->timeout; if (time_before(cmd->jiffies_at_alloc + wait_for, jiffies)) { scmd_printk(KERN_ERR, cmd, "timing out command, waited %lus\n", wait_for/HZ); return true; } return false; } /* * When ALUA transition state is returned, reprep the cmd to * use the ALUA handler's transition timeout. Delay the reprep * 1 sec to avoid aggressive retries of the target in that * state. */ #define ALUA_TRANSITION_REPREP_DELAY 1000 /* Helper for scsi_io_completion() when special action required. */ static void scsi_io_completion_action(struct scsi_cmnd *cmd, int result) { struct request *req = scsi_cmd_to_rq(cmd); int level = 0; enum {ACTION_FAIL, ACTION_REPREP, ACTION_DELAYED_REPREP, ACTION_RETRY, ACTION_DELAYED_RETRY} action; struct scsi_sense_hdr sshdr; bool sense_valid; bool sense_current = true; /* false implies "deferred sense" */ blk_status_t blk_stat; sense_valid = scsi_command_normalize_sense(cmd, &sshdr); if (sense_valid) sense_current = !scsi_sense_is_deferred(&sshdr); blk_stat = scsi_result_to_blk_status(result); if (host_byte(result) == DID_RESET) { /* Third party bus reset or reset for error recovery * reasons. Just retry the command and see what * happens. */ action = ACTION_RETRY; } else if (sense_valid && sense_current) { switch (sshdr.sense_key) { case UNIT_ATTENTION: if (cmd->device->removable) { /* Detected disc change. Set a bit * and quietly refuse further access. */ cmd->device->changed = 1; action = ACTION_FAIL; } else { /* Must have been a power glitch, or a * bus reset. Could not have been a * media change, so we just retry the * command and see what happens. */ action = ACTION_RETRY; } break; case ILLEGAL_REQUEST: /* If we had an ILLEGAL REQUEST returned, then * we may have performed an unsupported * command. The only thing this should be * would be a ten byte read where only a six * byte read was supported. Also, on a system * where READ CAPACITY failed, we may have * read past the end of the disk. */ if ((cmd->device->use_10_for_rw && sshdr.asc == 0x20 && sshdr.ascq == 0x00) && (cmd->cmnd[0] == READ_10 || cmd->cmnd[0] == WRITE_10)) { /* This will issue a new 6-byte command. */ cmd->device->use_10_for_rw = 0; action = ACTION_REPREP; } else if (sshdr.asc == 0x10) /* DIX */ { action = ACTION_FAIL; blk_stat = BLK_STS_PROTECTION; /* INVALID COMMAND OPCODE or INVALID FIELD IN CDB */ } else if (sshdr.asc == 0x20 || sshdr.asc == 0x24) { action = ACTION_FAIL; blk_stat = BLK_STS_TARGET; } else action = ACTION_FAIL; break; case ABORTED_COMMAND: action = ACTION_FAIL; if (sshdr.asc == 0x10) /* DIF */ blk_stat = BLK_STS_PROTECTION; break; case NOT_READY: /* If the device is in the process of becoming * ready, or has a temporary blockage, retry. */ if (sshdr.asc == 0x04) { switch (sshdr.ascq) { case 0x01: /* becoming ready */ case 0x04: /* format in progress */ case 0x05: /* rebuild in progress */ case 0x06: /* recalculation in progress */ case 0x07: /* operation in progress */ case 0x08: /* Long write in progress */ case 0x09: /* self test in progress */ case 0x11: /* notify (enable spinup) required */ case 0x14: /* space allocation in progress */ case 0x1a: /* start stop unit in progress */ case 0x1b: /* sanitize in progress */ case 0x1d: /* configuration in progress */ action = ACTION_DELAYED_RETRY; break; case 0x0a: /* ALUA state transition */ action = ACTION_DELAYED_REPREP; break; /* * Depopulation might take many hours, * thus it is not worthwhile to retry. */ case 0x24: /* depopulation in progress */ case 0x25: /* depopulation restore in progress */ fallthrough; default: action = ACTION_FAIL; break; } } else action = ACTION_FAIL; break; case VOLUME_OVERFLOW: /* See SSC3rXX or current. */ action = ACTION_FAIL; break; case DATA_PROTECT: action = ACTION_FAIL; if ((sshdr.asc == 0x0C && sshdr.ascq == 0x12) || (sshdr.asc == 0x55 && (sshdr.ascq == 0x0E || sshdr.ascq == 0x0F))) { /* Insufficient zone resources */ blk_stat = BLK_STS_ZONE_OPEN_RESOURCE; } break; case COMPLETED: fallthrough; default: action = ACTION_FAIL; break; } } else action = ACTION_FAIL; if (action != ACTION_FAIL && scsi_cmd_runtime_exceeced(cmd)) action = ACTION_FAIL; switch (action) { case ACTION_FAIL: /* Give up and fail the remainder of the request */ if (!(req->rq_flags & RQF_QUIET)) { static DEFINE_RATELIMIT_STATE(_rs, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST); if (unlikely(scsi_logging_level)) level = SCSI_LOG_LEVEL(SCSI_LOG_MLCOMPLETE_SHIFT, SCSI_LOG_MLCOMPLETE_BITS); /* * if logging is enabled the failure will be printed * in scsi_log_completion(), so avoid duplicate messages */ if (!level && __ratelimit(&_rs)) { scsi_print_result(cmd, NULL, FAILED); if (sense_valid) scsi_print_sense(cmd); scsi_print_command(cmd); } } if (!scsi_end_request(req, blk_stat, scsi_rq_err_bytes(req))) return; fallthrough; case ACTION_REPREP: scsi_mq_requeue_cmd(cmd, 0); break; case ACTION_DELAYED_REPREP: scsi_mq_requeue_cmd(cmd, ALUA_TRANSITION_REPREP_DELAY); break; case ACTION_RETRY: /* Retry the same command immediately */ __scsi_queue_insert(cmd, SCSI_MLQUEUE_EH_RETRY, false); break; case ACTION_DELAYED_RETRY: /* Retry the same command after a delay */ __scsi_queue_insert(cmd, SCSI_MLQUEUE_DEVICE_BUSY, false); break; } } /* * Helper for scsi_io_completion() when cmd->result is non-zero. Returns a * new result that may suppress further error checking. Also modifies * *blk_statp in some cases. */ static int scsi_io_completion_nz_result(struct scsi_cmnd *cmd, int result, blk_status_t *blk_statp) { bool sense_valid; bool sense_current = true; /* false implies "deferred sense" */ struct request *req = scsi_cmd_to_rq(cmd); struct scsi_sense_hdr sshdr; sense_valid = scsi_command_normalize_sense(cmd, &sshdr); if (sense_valid) sense_current = !scsi_sense_is_deferred(&sshdr); if (blk_rq_is_passthrough(req)) { if (sense_valid) { /* * SG_IO wants current and deferred errors */ cmd->sense_len = min(8 + cmd->sense_buffer[7], SCSI_SENSE_BUFFERSIZE); } if (sense_current) *blk_statp = scsi_result_to_blk_status(result); } else if (blk_rq_bytes(req) == 0 && sense_current) { /* * Flush commands do not transfers any data, and thus cannot use * good_bytes != blk_rq_bytes(req) as the signal for an error. * This sets *blk_statp explicitly for the problem case. */ *blk_statp = scsi_result_to_blk_status(result); } /* * Recovered errors need reporting, but they're always treated as * success, so fiddle the result code here. For passthrough requests * we already took a copy of the original into sreq->result which * is what gets returned to the user */ if (sense_valid && (sshdr.sense_key == RECOVERED_ERROR)) { bool do_print = true; /* * if ATA PASS-THROUGH INFORMATION AVAILABLE [0x0, 0x1d] * skip print since caller wants ATA registers. Only occurs * on SCSI ATA PASS_THROUGH commands when CK_COND=1 */ if ((sshdr.asc == 0x0) && (sshdr.ascq == 0x1d)) do_print = false; else if (req->rq_flags & RQF_QUIET) do_print = false; if (do_print) scsi_print_sense(cmd); result = 0; /* for passthrough, *blk_statp may be set */ *blk_statp = BLK_STS_OK; } /* * Another corner case: the SCSI status byte is non-zero but 'good'. * Example: PRE-FETCH command returns SAM_STAT_CONDITION_MET when * it is able to fit nominated LBs in its cache (and SAM_STAT_GOOD * if it can't fit). Treat SAM_STAT_CONDITION_MET and the related * intermediate statuses (both obsolete in SAM-4) as good. */ if ((result & 0xff) && scsi_status_is_good(result)) { result = 0; *blk_statp = BLK_STS_OK; } return result; } /** * scsi_io_completion - Completion processing for SCSI commands. * @cmd: command that is finished. * @good_bytes: number of processed bytes. * * We will finish off the specified number of sectors. If we are done, the * command block will be released and the queue function will be goosed. If we * are not done then we have to figure out what to do next: * * a) We can call scsi_mq_requeue_cmd(). The request will be * unprepared and put back on the queue. Then a new command will * be created for it. This should be used if we made forward * progress, or if we want to switch from READ(10) to READ(6) for * example. * * b) We can call scsi_io_completion_action(). The request will be * put back on the queue and retried using the same command as * before, possibly after a delay. * * c) We can call scsi_end_request() with blk_stat other than * BLK_STS_OK, to fail the remainder of the request. */ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) { int result = cmd->result; struct request *req = scsi_cmd_to_rq(cmd); blk_status_t blk_stat = BLK_STS_OK; if (unlikely(result)) /* a nz result may or may not be an error */ result = scsi_io_completion_nz_result(cmd, result, &blk_stat); /* * Next deal with any sectors which we were able to correctly * handle. */ SCSI_LOG_HLCOMPLETE(1, scmd_printk(KERN_INFO, cmd, "%u sectors total, %d bytes done.\n", blk_rq_sectors(req), good_bytes)); /* * Failed, zero length commands always need to drop down * to retry code. Fast path should return in this block. */ if (likely(blk_rq_bytes(req) > 0 || blk_stat == BLK_STS_OK)) { if (likely(!scsi_end_request(req, blk_stat, good_bytes))) return; /* no bytes remaining */ } /* Kill remainder if no retries. */ if (unlikely(blk_stat && scsi_noretry_cmd(cmd))) { if (scsi_end_request(req, blk_stat, blk_rq_bytes(req))) WARN_ONCE(true, "Bytes remaining after failed, no-retry command"); return; } /* * If there had been no error, but we have leftover bytes in the * request just queue the command up again. */ if (likely(result == 0)) scsi_mq_requeue_cmd(cmd, 0); else scsi_io_completion_action(cmd, result); } static inline bool scsi_cmd_needs_dma_drain(struct scsi_device *sdev, struct request *rq) { return sdev->dma_drain_len && blk_rq_is_passthrough(rq) && !op_is_write(req_op(rq)) && sdev->host->hostt->dma_need_drain(rq); } /** * scsi_alloc_sgtables - Allocate and initialize data and integrity scatterlists * @cmd: SCSI command data structure to initialize. * * Initializes @cmd->sdb and also @cmd->prot_sdb if data integrity is enabled * for @cmd. * * Returns: * * BLK_STS_OK - on success * * BLK_STS_RESOURCE - if the failure is retryable * * BLK_STS_IOERR - if the failure is fatal */ blk_status_t scsi_alloc_sgtables(struct scsi_cmnd *cmd) { struct scsi_device *sdev = cmd->device; struct request *rq = scsi_cmd_to_rq(cmd); unsigned short nr_segs = blk_rq_nr_phys_segments(rq); struct scatterlist *last_sg = NULL; blk_status_t ret; bool need_drain = scsi_cmd_needs_dma_drain(sdev, rq); int count; if (WARN_ON_ONCE(!nr_segs)) return BLK_STS_IOERR; /* * Make sure there is space for the drain. The driver must adjust * max_hw_segments to be prepared for this. */ if (need_drain) nr_segs++; /* * If sg table allocation fails, requeue request later. */ if (unlikely(sg_alloc_table_chained(&cmd->sdb.table, nr_segs, cmd->sdb.table.sgl, SCSI_INLINE_SG_CNT))) return BLK_STS_RESOURCE; /* * Next, walk the list, and fill in the addresses and sizes of * each segment. */ count = __blk_rq_map_sg(rq, cmd->sdb.table.sgl, &last_sg); if (blk_rq_bytes(rq) & rq->q->limits.dma_pad_mask) { unsigned int pad_len = (rq->q->limits.dma_pad_mask & ~blk_rq_bytes(rq)) + 1; last_sg->length += pad_len; cmd->extra_len += pad_len; } if (need_drain) { sg_unmark_end(last_sg); last_sg = sg_next(last_sg); sg_set_buf(last_sg, sdev->dma_drain_buf, sdev->dma_drain_len); sg_mark_end(last_sg); cmd->extra_len += sdev->dma_drain_len; count++; } BUG_ON(count > cmd->sdb.table.nents); cmd->sdb.table.nents = count; cmd->sdb.length = blk_rq_payload_bytes(rq); if (blk_integrity_rq(rq)) { struct scsi_data_buffer *prot_sdb = cmd->prot_sdb; if (WARN_ON_ONCE(!prot_sdb)) { /* * This can happen if someone (e.g. multipath) * queues a command to a device on an adapter * that does not support DIX. */ ret = BLK_STS_IOERR; goto out_free_sgtables; } if (sg_alloc_table_chained(&prot_sdb->table, rq->nr_integrity_segments, prot_sdb->table.sgl, SCSI_INLINE_PROT_SG_CNT)) { ret = BLK_STS_RESOURCE; goto out_free_sgtables; } count = blk_rq_map_integrity_sg(rq, prot_sdb->table.sgl); cmd->prot_sdb = prot_sdb; cmd->prot_sdb->table.nents = count; } return BLK_STS_OK; out_free_sgtables: scsi_free_sgtables(cmd); return ret; } EXPORT_SYMBOL(scsi_alloc_sgtables); /** * scsi_initialize_rq - initialize struct scsi_cmnd partially * @rq: Request associated with the SCSI command to be initialized. * * This function initializes the members of struct scsi_cmnd that must be * initialized before request processing starts and that won't be * reinitialized if a SCSI command is requeued. */ static void scsi_initialize_rq(struct request *rq) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); memset(cmd->cmnd, 0, sizeof(cmd->cmnd)); cmd->cmd_len = MAX_COMMAND_SIZE; cmd->sense_len = 0; init_rcu_head(&cmd->rcu); cmd->jiffies_at_alloc = jiffies; cmd->retries = 0; } /** * scsi_alloc_request - allocate a block request and partially * initialize its &scsi_cmnd * @q: the device's request queue * @opf: the request operation code * @flags: block layer allocation flags * * Return: &struct request pointer on success or %NULL on failure */ struct request *scsi_alloc_request(struct request_queue *q, blk_opf_t opf, blk_mq_req_flags_t flags) { struct request *rq; rq = blk_mq_alloc_request(q, opf, flags); if (!IS_ERR(rq)) scsi_initialize_rq(rq); return rq; } EXPORT_SYMBOL_GPL(scsi_alloc_request); /* * Only called when the request isn't completed by SCSI, and not freed by * SCSI */ static void scsi_cleanup_rq(struct request *rq) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); cmd->flags = 0; if (rq->rq_flags & RQF_DONTPREP) { scsi_mq_uninit_cmd(cmd); rq->rq_flags &= ~RQF_DONTPREP; } } /* Called before a request is prepared. See also scsi_mq_prep_fn(). */ void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd) { struct request *rq = scsi_cmd_to_rq(cmd); if (!blk_rq_is_passthrough(rq) && !(cmd->flags & SCMD_INITIALIZED)) { cmd->flags |= SCMD_INITIALIZED; scsi_initialize_rq(rq); } cmd->device = dev; INIT_LIST_HEAD(&cmd->eh_entry); INIT_DELAYED_WORK(&cmd->abort_work, scmd_eh_abort_handler); } static blk_status_t scsi_setup_scsi_cmnd(struct scsi_device *sdev, struct request *req) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req); /* * Passthrough requests may transfer data, in which case they must * a bio attached to them. Or they might contain a SCSI command * that does not transfer data, in which case they may optionally * submit a request without an attached bio. */ if (req->bio) { blk_status_t ret = scsi_alloc_sgtables(cmd); if (unlikely(ret != BLK_STS_OK)) return ret; } else { BUG_ON(blk_rq_bytes(req)); memset(&cmd->sdb, 0, sizeof(cmd->sdb)); } cmd->transfersize = blk_rq_bytes(req); return BLK_STS_OK; } static blk_status_t scsi_device_state_check(struct scsi_device *sdev, struct request *req) { switch (sdev->sdev_state) { case SDEV_CREATED: return BLK_STS_OK; case SDEV_OFFLINE: case SDEV_TRANSPORT_OFFLINE: /* * If the device is offline we refuse to process any * commands. The device must be brought online * before trying any recovery commands. */ if (!sdev->offline_already) { sdev->offline_already = true; sdev_printk(KERN_ERR, sdev, "rejecting I/O to offline device\n"); } return BLK_STS_IOERR; case SDEV_DEL: /* * If the device is fully deleted, we refuse to * process any commands as well. */ sdev_printk(KERN_ERR, sdev, "rejecting I/O to dead device\n"); return BLK_STS_IOERR; case SDEV_BLOCK: case SDEV_CREATED_BLOCK: return BLK_STS_RESOURCE; case SDEV_QUIESCE: /* * If the device is blocked we only accept power management * commands. */ if (req && WARN_ON_ONCE(!(req->rq_flags & RQF_PM))) return BLK_STS_RESOURCE; return BLK_STS_OK; default: /* * For any other not fully online state we only allow * power management commands. */ if (req && !(req->rq_flags & RQF_PM)) return BLK_STS_OFFLINE; return BLK_STS_OK; } } /* * scsi_dev_queue_ready: if we can send requests to sdev, assign one token * and return the token else return -1. */ static inline int scsi_dev_queue_ready(struct request_queue *q, struct scsi_device *sdev) { int token; token = sbitmap_get(&sdev->budget_map); if (token < 0) return -1; if (!atomic_read(&sdev->device_blocked)) return token; /* * Only unblock if no other commands are pending and * if device_blocked has decreased to zero */ if (scsi_device_busy(sdev) > 1 || atomic_dec_return(&sdev->device_blocked) > 0) { sbitmap_put(&sdev->budget_map, token); return -1; } SCSI_LOG_MLQUEUE(3, sdev_printk(KERN_INFO, sdev, "unblocking device at zero depth\n")); return token; } /* * scsi_target_queue_ready: checks if there we can send commands to target * @sdev: scsi device on starget to check. */ static inline int scsi_target_queue_ready(struct Scsi_Host *shost, struct scsi_device *sdev) { struct scsi_target *starget = scsi_target(sdev); unsigned int busy; if (starget->single_lun) { spin_lock_irq(shost->host_lock); if (starget->starget_sdev_user && starget->starget_sdev_user != sdev) { spin_unlock_irq(shost->host_lock); return 0; } starget->starget_sdev_user = sdev; spin_unlock_irq(shost->host_lock); } if (starget->can_queue <= 0) return 1; busy = atomic_inc_return(&starget->target_busy) - 1; if (atomic_read(&starget->target_blocked) > 0) { if (busy) goto starved; /* * unblock after target_blocked iterates to zero */ if (atomic_dec_return(&starget->target_blocked) > 0) goto out_dec; SCSI_LOG_MLQUEUE(3, starget_printk(KERN_INFO, starget, "unblocking target at zero depth\n")); } if (busy >= starget->can_queue) goto starved; return 1; starved: spin_lock_irq(shost->host_lock); list_move_tail(&sdev->starved_entry, &shost->starved_list); spin_unlock_irq(shost->host_lock); out_dec: if (starget->can_queue > 0) atomic_dec(&starget->target_busy); return 0; } /* * scsi_host_queue_ready: if we can send requests to shost, return 1 else * return 0. We must end up running the queue again whenever 0 is * returned, else IO can hang. */ static inline int scsi_host_queue_ready(struct request_queue *q, struct Scsi_Host *shost, struct scsi_device *sdev, struct scsi_cmnd *cmd) { if (atomic_read(&shost->host_blocked) > 0) { if (scsi_host_busy(shost) > 0) goto starved; /* * unblock after host_blocked iterates to zero */ if (atomic_dec_return(&shost->host_blocked) > 0) goto out_dec; SCSI_LOG_MLQUEUE(3, shost_printk(KERN_INFO, shost, "unblocking host at zero depth\n")); } if (shost->host_self_blocked) goto starved; /* We're OK to process the command, so we can't be starved */ if (!list_empty(&sdev->starved_entry)) { spin_lock_irq(shost->host_lock); if (!list_empty(&sdev->starved_entry)) list_del_init(&sdev->starved_entry); spin_unlock_irq(shost->host_lock); } __set_bit(SCMD_STATE_INFLIGHT, &cmd->state); return 1; starved: spin_lock_irq(shost->host_lock); if (list_empty(&sdev->starved_entry)) list_add_tail(&sdev->starved_entry, &shost->starved_list); spin_unlock_irq(shost->host_lock); out_dec: scsi_dec_host_busy(shost, cmd); return 0; } /* * Busy state exporting function for request stacking drivers. * * For efficiency, no lock is taken to check the busy state of * shost/starget/sdev, since the returned value is not guaranteed and * may be changed after request stacking drivers call the function, * regardless of taking lock or not. * * When scsi can't dispatch I/Os anymore and needs to kill I/Os scsi * needs to return 'not busy'. Otherwise, request stacking drivers * may hold requests forever. */ static bool scsi_mq_lld_busy(struct request_queue *q) { struct scsi_device *sdev = q->queuedata; struct Scsi_Host *shost; if (blk_queue_dying(q)) return false; shost = sdev->host; /* * Ignore host/starget busy state. * Since block layer does not have a concept of fairness across * multiple queues, congestion of host/starget needs to be handled * in SCSI layer. */ if (scsi_host_in_recovery(shost) || scsi_device_is_busy(sdev)) return true; return false; } /* * Block layer request completion callback. May be called from interrupt * context. */ static void scsi_complete(struct request *rq) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); enum scsi_disposition disposition; INIT_LIST_HEAD(&cmd->eh_entry); atomic_inc(&cmd->device->iodone_cnt); if (cmd->result) atomic_inc(&cmd->device->ioerr_cnt); disposition = scsi_decide_disposition(cmd); if (disposition != SUCCESS && scsi_cmd_runtime_exceeced(cmd)) disposition = SUCCESS; scsi_log_completion(cmd, disposition); switch (disposition) { case SUCCESS: scsi_finish_command(cmd); break; case NEEDS_RETRY: scsi_queue_insert(cmd, SCSI_MLQUEUE_EH_RETRY); break; case ADD_TO_MLQUEUE: scsi_queue_insert(cmd, SCSI_MLQUEUE_DEVICE_BUSY); break; default: scsi_eh_scmd_add(cmd); break; } } /** * scsi_dispatch_cmd - Dispatch a command to the low-level driver. * @cmd: command block we are dispatching. * * Return: nonzero return request was rejected and device's queue needs to be * plugged. */ static int scsi_dispatch_cmd(struct scsi_cmnd *cmd) { struct Scsi_Host *host = cmd->device->host; int rtn = 0; atomic_inc(&cmd->device->iorequest_cnt); /* check if the device is still usable */ if (unlikely(cmd->device->sdev_state == SDEV_DEL)) { /* in SDEV_DEL we error all commands. DID_NO_CONNECT * returns an immediate error upwards, and signals * that the device is no longer present */ cmd->result = DID_NO_CONNECT << 16; goto done; } /* Check to see if the scsi lld made this device blocked. */ if (unlikely(scsi_device_blocked(cmd->device))) { /* * in blocked state, the command is just put back on * the device queue. The suspend state has already * blocked the queue so future requests should not * occur until the device transitions out of the * suspend state. */ SCSI_LOG_MLQUEUE(3, scmd_printk(KERN_INFO, cmd, "queuecommand : device blocked\n")); atomic_dec(&cmd->device->iorequest_cnt); return SCSI_MLQUEUE_DEVICE_BUSY; } /* Store the LUN value in cmnd, if needed. */ if (cmd->device->lun_in_cdb) cmd->cmnd[1] = (cmd->cmnd[1] & 0x1f) | (cmd->device->lun << 5 & 0xe0); scsi_log_send(cmd); /* * Before we queue this command, check if the command * length exceeds what the host adapter can handle. */ if (cmd->cmd_len > cmd->device->host->max_cmd_len) { SCSI_LOG_MLQUEUE(3, scmd_printk(KERN_INFO, cmd, "queuecommand : command too long. " "cdb_size=%d host->max_cmd_len=%d\n", cmd->cmd_len, cmd->device->host->max_cmd_len)); cmd->result = (DID_ABORT << 16); goto done; } if (unlikely(host->shost_state == SHOST_DEL)) { cmd->result = (DID_NO_CONNECT << 16); goto done; } trace_scsi_dispatch_cmd_start(cmd); rtn = host->hostt->queuecommand(host, cmd); if (rtn) { atomic_dec(&cmd->device->iorequest_cnt); trace_scsi_dispatch_cmd_error(cmd, rtn); if (rtn != SCSI_MLQUEUE_DEVICE_BUSY && rtn != SCSI_MLQUEUE_TARGET_BUSY) rtn = SCSI_MLQUEUE_HOST_BUSY; SCSI_LOG_MLQUEUE(3, scmd_printk(KERN_INFO, cmd, "queuecommand : request rejected\n")); } return rtn; done: scsi_done(cmd); return 0; } /* Size in bytes of the sg-list stored in the scsi-mq command-private data. */ static unsigned int scsi_mq_inline_sgl_size(struct Scsi_Host *shost) { return min_t(unsigned int, shost->sg_tablesize, SCSI_INLINE_SG_CNT) * sizeof(struct scatterlist); } static blk_status_t scsi_prepare_cmd(struct request *req) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req); struct scsi_device *sdev = req->q->queuedata; struct Scsi_Host *shost = sdev->host; bool in_flight = test_bit(SCMD_STATE_INFLIGHT, &cmd->state); struct scatterlist *sg; scsi_init_command(sdev, cmd); cmd->eh_eflags = 0; cmd->prot_type = 0; cmd->prot_flags = 0; cmd->submitter = 0; memset(&cmd->sdb, 0, sizeof(cmd->sdb)); cmd->underflow = 0; cmd->transfersize = 0; cmd->host_scribble = NULL; cmd->result = 0; cmd->extra_len = 0; cmd->state = 0; if (in_flight) __set_bit(SCMD_STATE_INFLIGHT, &cmd->state); cmd->prot_op = SCSI_PROT_NORMAL; if (blk_rq_bytes(req)) cmd->sc_data_direction = rq_dma_dir(req); else cmd->sc_data_direction = DMA_NONE; sg = (void *)cmd + sizeof(struct scsi_cmnd) + shost->hostt->cmd_size; cmd->sdb.table.sgl = sg; if (scsi_host_get_prot(shost)) { memset(cmd->prot_sdb, 0, sizeof(struct scsi_data_buffer)); cmd->prot_sdb->table.sgl = (struct scatterlist *)(cmd->prot_sdb + 1); } /* * Special handling for passthrough commands, which don't go to the ULP * at all: */ if (blk_rq_is_passthrough(req)) return scsi_setup_scsi_cmnd(sdev, req); if (sdev->handler && sdev->handler->prep_fn) { blk_status_t ret = sdev->handler->prep_fn(sdev, req); if (ret != BLK_STS_OK) return ret; } /* Usually overridden by the ULP */ cmd->allowed = 0; memset(cmd->cmnd, 0, sizeof(cmd->cmnd)); return scsi_cmd_to_driver(cmd)->init_command(cmd); } static void scsi_done_internal(struct scsi_cmnd *cmd, bool complete_directly) { struct request *req = scsi_cmd_to_rq(cmd); switch (cmd->submitter) { case SUBMITTED_BY_BLOCK_LAYER: break; case SUBMITTED_BY_SCSI_ERROR_HANDLER: return scsi_eh_done(cmd); case SUBMITTED_BY_SCSI_RESET_IOCTL: return; } if (unlikely(blk_should_fake_timeout(scsi_cmd_to_rq(cmd)->q))) return; if (unlikely(test_and_set_bit(SCMD_STATE_COMPLETE, &cmd->state))) return; trace_scsi_dispatch_cmd_done(cmd); if (complete_directly) blk_mq_complete_request_direct(req, scsi_complete); else blk_mq_complete_request(req); } void scsi_done(struct scsi_cmnd *cmd) { scsi_done_internal(cmd, false); } EXPORT_SYMBOL(scsi_done); void scsi_done_direct(struct scsi_cmnd *cmd) { scsi_done_internal(cmd, true); } EXPORT_SYMBOL(scsi_done_direct); static void scsi_mq_put_budget(struct request_queue *q, int budget_token) { struct scsi_device *sdev = q->queuedata; sbitmap_put(&sdev->budget_map, budget_token); } /* * When to reinvoke queueing after a resource shortage. It's 3 msecs to * not change behaviour from the previous unplug mechanism, experimentation * may prove this needs changing. */ #define SCSI_QUEUE_DELAY 3 static int scsi_mq_get_budget(struct request_queue *q) { struct scsi_device *sdev = q->queuedata; int token = scsi_dev_queue_ready(q, sdev); if (token >= 0) return token; atomic_inc(&sdev->restarts); /* * Orders atomic_inc(&sdev->restarts) and atomic_read(&sdev->device_busy). * .restarts must be incremented before .device_busy is read because the * code in scsi_run_queue_async() depends on the order of these operations. */ smp_mb__after_atomic(); /* * If all in-flight requests originated from this LUN are completed * before reading .device_busy, sdev->device_busy will be observed as * zero, then blk_mq_delay_run_hw_queues() will dispatch this request * soon. Otherwise, completion of one of these requests will observe * the .restarts flag, and the request queue will be run for handling * this request, see scsi_end_request(). */ if (unlikely(scsi_device_busy(sdev) == 0 && !scsi_device_blocked(sdev))) blk_mq_delay_run_hw_queues(sdev->request_queue, SCSI_QUEUE_DELAY); return -1; } static void scsi_mq_set_rq_budget_token(struct request *req, int token) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req); cmd->budget_token = token; } static int scsi_mq_get_rq_budget_token(struct request *req) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req); return cmd->budget_token; } static blk_status_t scsi_queue_rq(struct blk_mq_hw_ctx *hctx, const struct blk_mq_queue_data *bd) { struct request *req = bd->rq; struct request_queue *q = req->q; struct scsi_device *sdev = q->queuedata; struct Scsi_Host *shost = sdev->host; struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req); blk_status_t ret; int reason; WARN_ON_ONCE(cmd->budget_token < 0); /* * If the device is not in running state we will reject some or all * commands. */ if (unlikely(sdev->sdev_state != SDEV_RUNNING)) { ret = scsi_device_state_check(sdev, req); if (ret != BLK_STS_OK) goto out_put_budget; } ret = BLK_STS_RESOURCE; if (!scsi_target_queue_ready(shost, sdev)) goto out_put_budget; if (unlikely(scsi_host_in_recovery(shost))) { if (cmd->flags & SCMD_FAIL_IF_RECOVERING) ret = BLK_STS_OFFLINE; goto out_dec_target_busy; } if (!scsi_host_queue_ready(q, shost, sdev, cmd)) goto out_dec_target_busy; /* * Only clear the driver-private command data if the LLD does not supply * a function to initialize that data. */ if (shost->hostt->cmd_size && !shost->hostt->init_cmd_priv) memset(scsi_cmd_priv(cmd), 0, shost->hostt->cmd_size); if (!(req->rq_flags & RQF_DONTPREP)) { ret = scsi_prepare_cmd(req); if (ret != BLK_STS_OK) goto out_dec_host_busy; req->rq_flags |= RQF_DONTPREP; } else { clear_bit(SCMD_STATE_COMPLETE, &cmd->state); } cmd->flags &= SCMD_PRESERVED_FLAGS; if (sdev->simple_tags) cmd->flags |= SCMD_TAGGED; if (bd->last) cmd->flags |= SCMD_LAST; scsi_set_resid(cmd, 0); memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); cmd->submitter = SUBMITTED_BY_BLOCK_LAYER; blk_mq_start_request(req); reason = scsi_dispatch_cmd(cmd); if (reason) { scsi_set_blocked(cmd, reason); ret = BLK_STS_RESOURCE; goto out_dec_host_busy; } return BLK_STS_OK; out_dec_host_busy: scsi_dec_host_busy(shost, cmd); out_dec_target_busy: if (scsi_target(sdev)->can_queue > 0) atomic_dec(&scsi_target(sdev)->target_busy); out_put_budget: scsi_mq_put_budget(q, cmd->budget_token); cmd->budget_token = -1; switch (ret) { case BLK_STS_OK: break; case BLK_STS_RESOURCE: if (scsi_device_blocked(sdev)) ret = BLK_STS_DEV_RESOURCE; break; case BLK_STS_AGAIN: cmd->result = DID_BUS_BUSY << 16; if (req->rq_flags & RQF_DONTPREP) scsi_mq_uninit_cmd(cmd); break; default: if (unlikely(!scsi_device_online(sdev))) cmd->result = DID_NO_CONNECT << 16; else cmd->result = DID_ERROR << 16; /* * Make sure to release all allocated resources when * we hit an error, as we will never see this command * again. */ if (req->rq_flags & RQF_DONTPREP) scsi_mq_uninit_cmd(cmd); scsi_run_queue_async(sdev); break; } return ret; } static int scsi_mq_init_request(struct blk_mq_tag_set *set, struct request *rq, unsigned int hctx_idx, unsigned int numa_node) { struct Scsi_Host *shost = set->driver_data; struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); struct scatterlist *sg; int ret = 0; cmd->sense_buffer = kmem_cache_alloc_node(scsi_sense_cache, GFP_KERNEL, numa_node); if (!cmd->sense_buffer) return -ENOMEM; if (scsi_host_get_prot(shost)) { sg = (void *)cmd + sizeof(struct scsi_cmnd) + shost->hostt->cmd_size; cmd->prot_sdb = (void *)sg + scsi_mq_inline_sgl_size(shost); } if (shost->hostt->init_cmd_priv) { ret = shost->hostt->init_cmd_priv(shost, cmd); if (ret < 0) kmem_cache_free(scsi_sense_cache, cmd->sense_buffer); } return ret; } static void scsi_mq_exit_request(struct blk_mq_tag_set *set, struct request *rq, unsigned int hctx_idx) { struct Scsi_Host *shost = set->driver_data; struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); if (shost->hostt->exit_cmd_priv) shost->hostt->exit_cmd_priv(shost, cmd); kmem_cache_free(scsi_sense_cache, cmd->sense_buffer); } static int scsi_mq_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob) { struct Scsi_Host *shost = hctx->driver_data; if (shost->hostt->mq_poll) return shost->hostt->mq_poll(shost, hctx->queue_num); return 0; } static int scsi_init_hctx(struct blk_mq_hw_ctx *hctx, void *data, unsigned int hctx_idx) { struct Scsi_Host *shost = data; hctx->driver_data = shost; return 0; } static void scsi_map_queues(struct blk_mq_tag_set *set) { struct Scsi_Host *shost = container_of(set, struct Scsi_Host, tag_set); if (shost->hostt->map_queues) return shost->hostt->map_queues(shost); blk_mq_map_queues(&set->map[HCTX_TYPE_DEFAULT]); } void scsi_init_limits(struct Scsi_Host *shost, struct queue_limits *lim) { struct device *dev = shost->dma_dev; memset(lim, 0, sizeof(*lim)); lim->max_segments = min_t(unsigned short, shost->sg_tablesize, SG_MAX_SEGMENTS); if (scsi_host_prot_dma(shost)) { shost->sg_prot_tablesize = min_not_zero(shost->sg_prot_tablesize, (unsigned short)SCSI_MAX_PROT_SG_SEGMENTS); BUG_ON(shost->sg_prot_tablesize < shost->sg_tablesize); lim->max_integrity_segments = shost->sg_prot_tablesize; } lim->max_hw_sectors = shost->max_sectors; lim->seg_boundary_mask = shost->dma_boundary; lim->max_segment_size = shost->max_segment_size; lim->virt_boundary_mask = shost->virt_boundary_mask; lim->dma_alignment = max_t(unsigned int, shost->dma_alignment, dma_get_cache_alignment() - 1); /* * Propagate the DMA formation properties to the dma-mapping layer as * a courtesy service to the LLDDs. This needs to check that the buses * actually support the DMA API first, though. */ if (dev->dma_parms) { dma_set_seg_boundary(dev, shost->dma_boundary); dma_set_max_seg_size(dev, shost->max_segment_size); } } EXPORT_SYMBOL_GPL(scsi_init_limits); static const struct blk_mq_ops scsi_mq_ops_no_commit = { .get_budget = scsi_mq_get_budget, .put_budget = scsi_mq_put_budget, .queue_rq = scsi_queue_rq, .complete = scsi_complete, .timeout = scsi_timeout, #ifdef CONFIG_BLK_DEBUG_FS .show_rq = scsi_show_rq, #endif .init_request = scsi_mq_init_request, .exit_request = scsi_mq_exit_request, .cleanup_rq = scsi_cleanup_rq, .busy = scsi_mq_lld_busy, .map_queues = scsi_map_queues, .init_hctx = scsi_init_hctx, .poll = scsi_mq_poll, .set_rq_budget_token = scsi_mq_set_rq_budget_token, .get_rq_budget_token = scsi_mq_get_rq_budget_token, }; static void scsi_commit_rqs(struct blk_mq_hw_ctx *hctx) { struct Scsi_Host *shost = hctx->driver_data; shost->hostt->commit_rqs(shost, hctx->queue_num); } static const struct blk_mq_ops scsi_mq_ops = { .get_budget = scsi_mq_get_budget, .put_budget = scsi_mq_put_budget, .queue_rq = scsi_queue_rq, .commit_rqs = scsi_commit_rqs, .complete = scsi_complete, .timeout = scsi_timeout, #ifdef CONFIG_BLK_DEBUG_FS .show_rq = scsi_show_rq, #endif .init_request = scsi_mq_init_request, .exit_request = scsi_mq_exit_request, .cleanup_rq = scsi_cleanup_rq, .busy = scsi_mq_lld_busy, .map_queues = scsi_map_queues, .init_hctx = scsi_init_hctx, .poll = scsi_mq_poll, .set_rq_budget_token = scsi_mq_set_rq_budget_token, .get_rq_budget_token = scsi_mq_get_rq_budget_token, }; int scsi_mq_setup_tags(struct Scsi_Host *shost) { unsigned int cmd_size, sgl_size; struct blk_mq_tag_set *tag_set = &shost->tag_set; sgl_size = max_t(unsigned int, sizeof(struct scatterlist), scsi_mq_inline_sgl_size(shost)); cmd_size = sizeof(struct scsi_cmnd) + shost->hostt->cmd_size + sgl_size; if (scsi_host_get_prot(shost)) cmd_size += sizeof(struct scsi_data_buffer) + sizeof(struct scatterlist) * SCSI_INLINE_PROT_SG_CNT; memset(tag_set, 0, sizeof(*tag_set)); if (shost->hostt->commit_rqs) tag_set->ops = &scsi_mq_ops; else tag_set->ops = &scsi_mq_ops_no_commit; tag_set->nr_hw_queues = shost->nr_hw_queues ? : 1; tag_set->nr_maps = shost->nr_maps ? : 1; tag_set->queue_depth = shost->can_queue; tag_set->cmd_size = cmd_size; tag_set->numa_node = dev_to_node(shost->dma_dev); if (shost->hostt->tag_alloc_policy_rr) tag_set->flags |= BLK_MQ_F_TAG_RR; if (shost->queuecommand_may_block) tag_set->flags |= BLK_MQ_F_BLOCKING; tag_set->driver_data = shost; if (shost->host_tagset) tag_set->flags |= BLK_MQ_F_TAG_HCTX_SHARED; return blk_mq_alloc_tag_set(tag_set); } void scsi_mq_free_tags(struct kref *kref) { struct Scsi_Host *shost = container_of(kref, typeof(*shost), tagset_refcnt); blk_mq_free_tag_set(&shost->tag_set); complete(&shost->tagset_freed); } /** * scsi_device_from_queue - return sdev associated with a request_queue * @q: The request queue to return the sdev from * * Return the sdev associated with a request queue or NULL if the * request_queue does not reference a SCSI device. */ struct scsi_device *scsi_device_from_queue(struct request_queue *q) { struct scsi_device *sdev = NULL; if (q->mq_ops == &scsi_mq_ops_no_commit || q->mq_ops == &scsi_mq_ops) sdev = q->queuedata; if (!sdev || !get_device(&sdev->sdev_gendev)) sdev = NULL; return sdev; } /* * pktcdvd should have been integrated into the SCSI layers, but for historical * reasons like the old IDE driver it isn't. This export allows it to safely * probe if a given device is a SCSI one and only attach to that. */ #ifdef CONFIG_CDROM_PKTCDVD_MODULE EXPORT_SYMBOL_GPL(scsi_device_from_queue); #endif /** * scsi_block_requests - Utility function used by low-level drivers to prevent * further commands from being queued to the device. * @shost: host in question * * There is no timer nor any other means by which the requests get unblocked * other than the low-level driver calling scsi_unblock_requests(). */ void scsi_block_requests(struct Scsi_Host *shost) { shost->host_self_blocked = 1; } EXPORT_SYMBOL(scsi_block_requests); /** * scsi_unblock_requests - Utility function used by low-level drivers to allow * further commands to be queued to the device. * @shost: host in question * * There is no timer nor any other means by which the requests get unblocked * other than the low-level driver calling scsi_unblock_requests(). This is done * as an API function so that changes to the internals of the scsi mid-layer * won't require wholesale changes to drivers that use this feature. */ void scsi_unblock_requests(struct Scsi_Host *shost) { shost->host_self_blocked = 0; scsi_run_host_queues(shost); } EXPORT_SYMBOL(scsi_unblock_requests); void scsi_exit_queue(void) { kmem_cache_destroy(scsi_sense_cache); } /** * scsi_mode_select - issue a mode select * @sdev: SCSI device to be queried * @pf: Page format bit (1 == standard, 0 == vendor specific) * @sp: Save page bit (0 == don't save, 1 == save) * @buffer: request buffer (may not be smaller than eight bytes) * @len: length of request buffer. * @timeout: command timeout * @retries: number of retries before failing * @data: returns a structure abstracting the mode header data * @sshdr: place to put sense data (or NULL if no sense to be collected). * must be SCSI_SENSE_BUFFERSIZE big. * * Returns zero if successful; negative error number or scsi * status on error * */ int scsi_mode_select(struct scsi_device *sdev, int pf, int sp, unsigned char *buffer, int len, int timeout, int retries, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { unsigned char cmd[10]; unsigned char *real_buffer; const struct scsi_exec_args exec_args = { .sshdr = sshdr, }; int ret; memset(cmd, 0, sizeof(cmd)); cmd[1] = (pf ? 0x10 : 0) | (sp ? 0x01 : 0); /* * Use MODE SELECT(10) if the device asked for it or if the mode page * and the mode select header cannot fit within the maximumm 255 bytes * of the MODE SELECT(6) command. */ if (sdev->use_10_for_ms || len + 4 > 255 || data->block_descriptor_length > 255) { if (len > 65535 - 8) return -EINVAL; real_buffer = kmalloc(8 + len, GFP_KERNEL); if (!real_buffer) return -ENOMEM; memcpy(real_buffer + 8, buffer, len); len += 8; real_buffer[0] = 0; real_buffer[1] = 0; real_buffer[2] = data->medium_type; real_buffer[3] = data->device_specific; real_buffer[4] = data->longlba ? 0x01 : 0; real_buffer[5] = 0; put_unaligned_be16(data->block_descriptor_length, &real_buffer[6]); cmd[0] = MODE_SELECT_10; put_unaligned_be16(len, &cmd[7]); } else { if (data->longlba) return -EINVAL; real_buffer = kmalloc(4 + len, GFP_KERNEL); if (!real_buffer) return -ENOMEM; memcpy(real_buffer + 4, buffer, len); len += 4; real_buffer[0] = 0; real_buffer[1] = data->medium_type; real_buffer[2] = data->device_specific; real_buffer[3] = data->block_descriptor_length; cmd[0] = MODE_SELECT; cmd[4] = len; } ret = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_OUT, real_buffer, len, timeout, retries, &exec_args); kfree(real_buffer); return ret; } EXPORT_SYMBOL_GPL(scsi_mode_select); /** * scsi_mode_sense - issue a mode sense, falling back from 10 to six bytes if necessary. * @sdev: SCSI device to be queried * @dbd: set to prevent mode sense from returning block descriptors * @modepage: mode page being requested * @subpage: sub-page of the mode page being requested * @buffer: request buffer (may not be smaller than eight bytes) * @len: length of request buffer. * @timeout: command timeout * @retries: number of retries before failing * @data: returns a structure abstracting the mode header data * @sshdr: place to put sense data (or NULL if no sense to be collected). * must be SCSI_SENSE_BUFFERSIZE big. * * Returns zero if successful, or a negative error number on failure */ int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, int subpage, unsigned char *buffer, int len, int timeout, int retries, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { unsigned char cmd[12]; int use_10_for_ms; int header_length; int result; struct scsi_sense_hdr my_sshdr; struct scsi_failure failure_defs[] = { { .sense = UNIT_ATTENTION, .asc = SCMD_FAILURE_ASC_ANY, .ascq = SCMD_FAILURE_ASCQ_ANY, .allowed = retries, .result = SAM_STAT_CHECK_CONDITION, }, {} }; struct scsi_failures failures = { .failure_definitions = failure_defs, }; const struct scsi_exec_args exec_args = { /* caller might not be interested in sense, but we need it */ .sshdr = sshdr ? : &my_sshdr, .failures = &failures, }; memset(data, 0, sizeof(*data)); memset(&cmd[0], 0, 12); dbd = sdev->set_dbd_for_ms ? 8 : dbd; cmd[1] = dbd & 0x18; /* allows DBD and LLBA bits */ cmd[2] = modepage; cmd[3] = subpage; sshdr = exec_args.sshdr; retry: use_10_for_ms = sdev->use_10_for_ms || len > 255; if (use_10_for_ms) { if (len < 8 || len > 65535) return -EINVAL; cmd[0] = MODE_SENSE_10; put_unaligned_be16(len, &cmd[7]); header_length = 8; } else { if (len < 4) return -EINVAL; cmd[0] = MODE_SENSE; cmd[4] = len; header_length = 4; } memset(buffer, 0, len); result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, buffer, len, timeout, retries, &exec_args); if (result < 0) return result; /* This code looks awful: what it's doing is making sure an * ILLEGAL REQUEST sense return identifies the actual command * byte as the problem. MODE_SENSE commands can return * ILLEGAL REQUEST if the code page isn't supported */ if (!scsi_status_is_good(result)) { if (scsi_sense_valid(sshdr)) { if ((sshdr->sense_key == ILLEGAL_REQUEST) && (sshdr->asc == 0x20) && (sshdr->ascq == 0)) { /* * Invalid command operation code: retry using * MODE SENSE(6) if this was a MODE SENSE(10) * request, except if the request mode page is * too large for MODE SENSE single byte * allocation length field. */ if (use_10_for_ms) { if (len > 255) return -EIO; sdev->use_10_for_ms = 0; goto retry; } } } return -EIO; } if (unlikely(buffer[0] == 0x86 && buffer[1] == 0x0b && (modepage == 6 || modepage == 8))) { /* Initio breakage? */ header_length = 0; data->length = 13; data->medium_type = 0; data->device_specific = 0; data->longlba = 0; data->block_descriptor_length = 0; } else if (use_10_for_ms) { data->length = get_unaligned_be16(&buffer[0]) + 2; data->medium_type = buffer[2]; data->device_specific = buffer[3]; data->longlba = buffer[4] & 0x01; data->block_descriptor_length = get_unaligned_be16(&buffer[6]); } else { data->length = buffer[0] + 1; data->medium_type = buffer[1]; data->device_specific = buffer[2]; data->block_descriptor_length = buffer[3]; } data->header_length = header_length; return 0; } EXPORT_SYMBOL(scsi_mode_sense); /** * scsi_test_unit_ready - test if unit is ready * @sdev: scsi device to change the state of. * @timeout: command timeout * @retries: number of retries before failing * @sshdr: outpout pointer for decoded sense information. * * Returns zero if unsuccessful or an error if TUR failed. For * removable media, UNIT_ATTENTION sets ->changed flag. **/ int scsi_test_unit_ready(struct scsi_device *sdev, int timeout, int retries, struct scsi_sense_hdr *sshdr) { char cmd[] = { TEST_UNIT_READY, 0, 0, 0, 0, 0, }; const struct scsi_exec_args exec_args = { .sshdr = sshdr, }; int result; /* try to eat the UNIT_ATTENTION if there are enough retries */ do { result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, NULL, 0, timeout, 1, &exec_args); if (sdev->removable && result > 0 && scsi_sense_valid(sshdr) && sshdr->sense_key == UNIT_ATTENTION) sdev->changed = 1; } while (result > 0 && scsi_sense_valid(sshdr) && sshdr->sense_key == UNIT_ATTENTION && --retries); return result; } EXPORT_SYMBOL(scsi_test_unit_ready); /** * scsi_device_set_state - Take the given device through the device state model. * @sdev: scsi device to change the state of. * @state: state to change to. * * Returns zero if successful or an error if the requested * transition is illegal. */ int scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state) { enum scsi_device_state oldstate = sdev->sdev_state; if (state == oldstate) return 0; switch (state) { case SDEV_CREATED: switch (oldstate) { case SDEV_CREATED_BLOCK: break; default: goto illegal; } break; case SDEV_RUNNING: switch (oldstate) { case SDEV_CREATED: case SDEV_OFFLINE: case SDEV_TRANSPORT_OFFLINE: case SDEV_QUIESCE: case SDEV_BLOCK: break; default: goto illegal; } break; case SDEV_QUIESCE: switch (oldstate) { case SDEV_RUNNING: case SDEV_OFFLINE: case SDEV_TRANSPORT_OFFLINE: break; default: goto illegal; } break; case SDEV_OFFLINE: case SDEV_TRANSPORT_OFFLINE: switch (oldstate) { case SDEV_CREATED: case SDEV_RUNNING: case SDEV_QUIESCE: case SDEV_BLOCK: break; default: goto illegal; } break; case SDEV_BLOCK: switch (oldstate) { case SDEV_RUNNING: case SDEV_CREATED_BLOCK: case SDEV_QUIESCE: case SDEV_OFFLINE: break; default: goto illegal; } break; case SDEV_CREATED_BLOCK: switch (oldstate) { case SDEV_CREATED: break; default: goto illegal; } break; case SDEV_CANCEL: switch (oldstate) { case SDEV_CREATED: case SDEV_RUNNING: case SDEV_QUIESCE: case SDEV_OFFLINE: case SDEV_TRANSPORT_OFFLINE: break; default: goto illegal; } break; case SDEV_DEL: switch (oldstate) { case SDEV_CREATED: case SDEV_RUNNING: case SDEV_OFFLINE: case SDEV_TRANSPORT_OFFLINE: case SDEV_CANCEL: case SDEV_BLOCK: case SDEV_CREATED_BLOCK: break; default: goto illegal; } break; } sdev->offline_already = false; sdev->sdev_state = state; return 0; illegal: SCSI_LOG_ERROR_RECOVERY(1, sdev_printk(KERN_ERR, sdev, "Illegal state transition %s->%s", scsi_device_state_name(oldstate), scsi_device_state_name(state)) ); return -EINVAL; } EXPORT_SYMBOL(scsi_device_set_state); /** * scsi_evt_emit - emit a single SCSI device uevent * @sdev: associated SCSI device * @evt: event to emit * * Send a single uevent (scsi_event) to the associated scsi_device. */ static void scsi_evt_emit(struct scsi_device *sdev, struct scsi_event *evt) { int idx = 0; char *envp[3]; switch (evt->evt_type) { case SDEV_EVT_MEDIA_CHANGE: envp[idx++] = "SDEV_MEDIA_CHANGE=1"; break; case SDEV_EVT_INQUIRY_CHANGE_REPORTED: scsi_rescan_device(sdev); envp[idx++] = "SDEV_UA=INQUIRY_DATA_HAS_CHANGED"; break; case SDEV_EVT_CAPACITY_CHANGE_REPORTED: envp[idx++] = "SDEV_UA=CAPACITY_DATA_HAS_CHANGED"; break; case SDEV_EVT_SOFT_THRESHOLD_REACHED_REPORTED: envp[idx++] = "SDEV_UA=THIN_PROVISIONING_SOFT_THRESHOLD_REACHED"; break; case SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED: envp[idx++] = "SDEV_UA=MODE_PARAMETERS_CHANGED"; break; case SDEV_EVT_LUN_CHANGE_REPORTED: envp[idx++] = "SDEV_UA=REPORTED_LUNS_DATA_HAS_CHANGED"; break; case SDEV_EVT_ALUA_STATE_CHANGE_REPORTED: envp[idx++] = "SDEV_UA=ASYMMETRIC_ACCESS_STATE_CHANGED"; break; case SDEV_EVT_POWER_ON_RESET_OCCURRED: envp[idx++] = "SDEV_UA=POWER_ON_RESET_OCCURRED"; break; default: /* do nothing */ break; } envp[idx++] = NULL; kobject_uevent_env(&sdev->sdev_gendev.kobj, KOBJ_CHANGE, envp); } /** * scsi_evt_thread - send a uevent for each scsi event * @work: work struct for scsi_device * * Dispatch queued events to their associated scsi_device kobjects * as uevents. */ void scsi_evt_thread(struct work_struct *work) { struct scsi_device *sdev; enum scsi_device_event evt_type; LIST_HEAD(event_list); sdev = container_of(work, struct scsi_device, event_work); for (evt_type = SDEV_EVT_FIRST; evt_type <= SDEV_EVT_LAST; evt_type++) if (test_and_clear_bit(evt_type, sdev->pending_events)) sdev_evt_send_simple(sdev, evt_type, GFP_KERNEL); while (1) { struct scsi_event *evt; struct list_head *this, *tmp; unsigned long flags; spin_lock_irqsave(&sdev->list_lock, flags); list_splice_init(&sdev->event_list, &event_list); spin_unlock_irqrestore(&sdev->list_lock, flags); if (list_empty(&event_list)) break; list_for_each_safe(this, tmp, &event_list) { evt = list_entry(this, struct scsi_event, node); list_del(&evt->node); scsi_evt_emit(sdev, evt); kfree(evt); } } } /** * sdev_evt_send - send asserted event to uevent thread * @sdev: scsi_device event occurred on * @evt: event to send * * Assert scsi device event asynchronously. */ void sdev_evt_send(struct scsi_device *sdev, struct scsi_event *evt) { unsigned long flags; #if 0 /* FIXME: currently this check eliminates all media change events * for polled devices. Need to update to discriminate between AN * and polled events */ if (!test_bit(evt->evt_type, sdev->supported_events)) { kfree(evt); return; } #endif spin_lock_irqsave(&sdev->list_lock, flags); list_add_tail(&evt->node, &sdev->event_list); schedule_work(&sdev->event_work); spin_unlock_irqrestore(&sdev->list_lock, flags); } EXPORT_SYMBOL_GPL(sdev_evt_send); /** * sdev_evt_alloc - allocate a new scsi event * @evt_type: type of event to allocate * @gfpflags: GFP flags for allocation * * Allocates and returns a new scsi_event. */ struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type, gfp_t gfpflags) { struct scsi_event *evt = kzalloc(sizeof(struct scsi_event), gfpflags); if (!evt) return NULL; evt->evt_type = evt_type; INIT_LIST_HEAD(&evt->node); /* evt_type-specific initialization, if any */ switch (evt_type) { case SDEV_EVT_MEDIA_CHANGE: case SDEV_EVT_INQUIRY_CHANGE_REPORTED: case SDEV_EVT_CAPACITY_CHANGE_REPORTED: case SDEV_EVT_SOFT_THRESHOLD_REACHED_REPORTED: case SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED: case SDEV_EVT_LUN_CHANGE_REPORTED: case SDEV_EVT_ALUA_STATE_CHANGE_REPORTED: case SDEV_EVT_POWER_ON_RESET_OCCURRED: default: /* do nothing */ break; } return evt; } EXPORT_SYMBOL_GPL(sdev_evt_alloc); /** * sdev_evt_send_simple - send asserted event to uevent thread * @sdev: scsi_device event occurred on * @evt_type: type of event to send * @gfpflags: GFP flags for allocation * * Assert scsi device event asynchronously, given an event type. */ void sdev_evt_send_simple(struct scsi_device *sdev, enum scsi_device_event evt_type, gfp_t gfpflags) { struct scsi_event *evt = sdev_evt_alloc(evt_type, gfpflags); if (!evt) { sdev_printk(KERN_ERR, sdev, "event %d eaten due to OOM\n", evt_type); return; } sdev_evt_send(sdev, evt); } EXPORT_SYMBOL_GPL(sdev_evt_send_simple); /** * scsi_device_quiesce - Block all commands except power management. * @sdev: scsi device to quiesce. * * This works by trying to transition to the SDEV_QUIESCE state * (which must be a legal transition). When the device is in this * state, only power management requests will be accepted, all others will * be deferred. * * Must be called with user context, may sleep. * * Returns zero if unsuccessful or an error if not. */ int scsi_device_quiesce(struct scsi_device *sdev) { struct request_queue *q = sdev->request_queue; unsigned int memflags; int err; /* * It is allowed to call scsi_device_quiesce() multiple times from * the same context but concurrent scsi_device_quiesce() calls are * not allowed. */ WARN_ON_ONCE(sdev->quiesced_by && sdev->quiesced_by != current); if (sdev->quiesced_by == current) return 0; blk_set_pm_only(q); memflags = blk_mq_freeze_queue(q); /* * Ensure that the effect of blk_set_pm_only() will be visible * for percpu_ref_tryget() callers that occur after the queue * unfreeze even if the queue was already frozen before this function * was called. See also https://lwn.net/Articles/573497/. */ synchronize_rcu(); blk_mq_unfreeze_queue(q, memflags); mutex_lock(&sdev->state_mutex); err = scsi_device_set_state(sdev, SDEV_QUIESCE); if (err == 0) sdev->quiesced_by = current; else blk_clear_pm_only(q); mutex_unlock(&sdev->state_mutex); return err; } EXPORT_SYMBOL(scsi_device_quiesce); /** * scsi_device_resume - Restart user issued commands to a quiesced device. * @sdev: scsi device to resume. * * Moves the device from quiesced back to running and restarts the * queues. * * Must be called with user context, may sleep. */ void scsi_device_resume(struct scsi_device *sdev) { /* check if the device state was mutated prior to resume, and if * so assume the state is being managed elsewhere (for example * device deleted during suspend) */ mutex_lock(&sdev->state_mutex); if (sdev->sdev_state == SDEV_QUIESCE) scsi_device_set_state(sdev, SDEV_RUNNING); if (sdev->quiesced_by) { sdev->quiesced_by = NULL; blk_clear_pm_only(sdev->request_queue); } mutex_unlock(&sdev->state_mutex); } EXPORT_SYMBOL(scsi_device_resume); static void device_quiesce_fn(struct scsi_device *sdev, void *data) { scsi_device_quiesce(sdev); } void scsi_target_quiesce(struct scsi_target *starget) { starget_for_each_device(starget, NULL, device_quiesce_fn); } EXPORT_SYMBOL(scsi_target_quiesce); static void device_resume_fn(struct scsi_device *sdev, void *data) { scsi_device_resume(sdev); } void scsi_target_resume(struct scsi_target *starget) { starget_for_each_device(starget, NULL, device_resume_fn); } EXPORT_SYMBOL(scsi_target_resume); static int __scsi_internal_device_block_nowait(struct scsi_device *sdev) { if (scsi_device_set_state(sdev, SDEV_BLOCK)) return scsi_device_set_state(sdev, SDEV_CREATED_BLOCK); return 0; } void scsi_start_queue(struct scsi_device *sdev) { if (cmpxchg(&sdev->queue_stopped, 1, 0)) blk_mq_unquiesce_queue(sdev->request_queue); } static void scsi_stop_queue(struct scsi_device *sdev) { /* * The atomic variable of ->queue_stopped covers that * blk_mq_quiesce_queue* is balanced with blk_mq_unquiesce_queue. * * The caller needs to wait until quiesce is done. */ if (!cmpxchg(&sdev->queue_stopped, 0, 1)) blk_mq_quiesce_queue_nowait(sdev->request_queue); } /** * scsi_internal_device_block_nowait - try to transition to the SDEV_BLOCK state * @sdev: device to block * * Pause SCSI command processing on the specified device. Does not sleep. * * Returns zero if successful or a negative error code upon failure. * * Notes: * This routine transitions the device to the SDEV_BLOCK state (which must be * a legal transition). When the device is in this state, command processing * is paused until the device leaves the SDEV_BLOCK state. See also * scsi_internal_device_unblock_nowait(). */ int scsi_internal_device_block_nowait(struct scsi_device *sdev) { int ret = __scsi_internal_device_block_nowait(sdev); /* * The device has transitioned to SDEV_BLOCK. Stop the * block layer from calling the midlayer with this device's * request queue. */ if (!ret) scsi_stop_queue(sdev); return ret; } EXPORT_SYMBOL_GPL(scsi_internal_device_block_nowait); /** * scsi_device_block - try to transition to the SDEV_BLOCK state * @sdev: device to block * @data: dummy argument, ignored * * Pause SCSI command processing on the specified device. Callers must wait * until all ongoing scsi_queue_rq() calls have finished after this function * returns. * * Note: * This routine transitions the device to the SDEV_BLOCK state (which must be * a legal transition). When the device is in this state, command processing * is paused until the device leaves the SDEV_BLOCK state. See also * scsi_internal_device_unblock(). */ static void scsi_device_block(struct scsi_device *sdev, void *data) { int err; enum scsi_device_state state; mutex_lock(&sdev->state_mutex); err = __scsi_internal_device_block_nowait(sdev); state = sdev->sdev_state; if (err == 0) /* * scsi_stop_queue() must be called with the state_mutex * held. Otherwise a simultaneous scsi_start_queue() call * might unquiesce the queue before we quiesce it. */ scsi_stop_queue(sdev); mutex_unlock(&sdev->state_mutex); WARN_ONCE(err, "%s: failed to block %s in state %d\n", __func__, dev_name(&sdev->sdev_gendev), state); } /** * scsi_internal_device_unblock_nowait - resume a device after a block request * @sdev: device to resume * @new_state: state to set the device to after unblocking * * Restart the device queue for a previously suspended SCSI device. Does not * sleep. * * Returns zero if successful or a negative error code upon failure. * * Notes: * This routine transitions the device to the SDEV_RUNNING state or to one of * the offline states (which must be a legal transition) allowing the midlayer * to goose the queue for this device. */ int scsi_internal_device_unblock_nowait(struct scsi_device *sdev, enum scsi_device_state new_state) { switch (new_state) { case SDEV_RUNNING: case SDEV_TRANSPORT_OFFLINE: break; default: return -EINVAL; } /* * Try to transition the scsi device to SDEV_RUNNING or one of the * offlined states and goose the device queue if successful. */ switch (sdev->sdev_state) { case SDEV_BLOCK: case SDEV_TRANSPORT_OFFLINE: sdev->sdev_state = new_state; break; case SDEV_CREATED_BLOCK: if (new_state == SDEV_TRANSPORT_OFFLINE || new_state == SDEV_OFFLINE) sdev->sdev_state = new_state; else sdev->sdev_state = SDEV_CREATED; break; case SDEV_CANCEL: case SDEV_OFFLINE: break; default: return -EINVAL; } scsi_start_queue(sdev); return 0; } EXPORT_SYMBOL_GPL(scsi_internal_device_unblock_nowait); /** * scsi_internal_device_unblock - resume a device after a block request * @sdev: device to resume * @new_state: state to set the device to after unblocking * * Restart the device queue for a previously suspended SCSI device. May sleep. * * Returns zero if successful or a negative error code upon failure. * * Notes: * This routine transitions the device to the SDEV_RUNNING state or to one of * the offline states (which must be a legal transition) allowing the midlayer * to goose the queue for this device. */ static int scsi_internal_device_unblock(struct scsi_device *sdev, enum scsi_device_state new_state) { int ret; mutex_lock(&sdev->state_mutex); ret = scsi_internal_device_unblock_nowait(sdev, new_state); mutex_unlock(&sdev->state_mutex); return ret; } static int target_block(struct device *dev, void *data) { if (scsi_is_target_device(dev)) starget_for_each_device(to_scsi_target(dev), NULL, scsi_device_block); return 0; } /** * scsi_block_targets - transition all SCSI child devices to SDEV_BLOCK state * @dev: a parent device of one or more scsi_target devices * @shost: the Scsi_Host to which this device belongs * * Iterate over all children of @dev, which should be scsi_target devices, * and switch all subordinate scsi devices to SDEV_BLOCK state. Wait for * ongoing scsi_queue_rq() calls to finish. May sleep. * * Note: * @dev must not itself be a scsi_target device. */ void scsi_block_targets(struct Scsi_Host *shost, struct device *dev) { WARN_ON_ONCE(scsi_is_target_device(dev)); device_for_each_child(dev, NULL, target_block); blk_mq_wait_quiesce_done(&shost->tag_set); } EXPORT_SYMBOL_GPL(scsi_block_targets); static void device_unblock(struct scsi_device *sdev, void *data) { scsi_internal_device_unblock(sdev, *(enum scsi_device_state *)data); } static int target_unblock(struct device *dev, void *data) { if (scsi_is_target_device(dev)) starget_for_each_device(to_scsi_target(dev), data, device_unblock); return 0; } void scsi_target_unblock(struct device *dev, enum scsi_device_state new_state) { if (scsi_is_target_device(dev)) starget_for_each_device(to_scsi_target(dev), &new_state, device_unblock); else device_for_each_child(dev, &new_state, target_unblock); } EXPORT_SYMBOL_GPL(scsi_target_unblock); /** * scsi_host_block - Try to transition all logical units to the SDEV_BLOCK state * @shost: device to block * * Pause SCSI command processing for all logical units associated with the SCSI * host and wait until pending scsi_queue_rq() calls have finished. * * Returns zero if successful or a negative error code upon failure. */ int scsi_host_block(struct Scsi_Host *shost) { struct scsi_device *sdev; int ret; /* * Call scsi_internal_device_block_nowait so we can avoid * calling synchronize_rcu() for each LUN. */ shost_for_each_device(sdev, shost) { mutex_lock(&sdev->state_mutex); ret = scsi_internal_device_block_nowait(sdev); mutex_unlock(&sdev->state_mutex); if (ret) { scsi_device_put(sdev); return ret; } } /* Wait for ongoing scsi_queue_rq() calls to finish. */ blk_mq_wait_quiesce_done(&shost->tag_set); return 0; } EXPORT_SYMBOL_GPL(scsi_host_block); int scsi_host_unblock(struct Scsi_Host *shost, int new_state) { struct scsi_device *sdev; int ret = 0; shost_for_each_device(sdev, shost) { ret = scsi_internal_device_unblock(sdev, new_state); if (ret) { scsi_device_put(sdev); break; } } return ret; } EXPORT_SYMBOL_GPL(scsi_host_unblock); /** * scsi_kmap_atomic_sg - find and atomically map an sg-elemnt * @sgl: scatter-gather list * @sg_count: number of segments in sg * @offset: offset in bytes into sg, on return offset into the mapped area * @len: bytes to map, on return number of bytes mapped * * Returns virtual address of the start of the mapped page */ void *scsi_kmap_atomic_sg(struct scatterlist *sgl, int sg_count, size_t *offset, size_t *len) { int i; size_t sg_len = 0, len_complete = 0; struct scatterlist *sg; struct page *page; WARN_ON(!irqs_disabled()); for_each_sg(sgl, sg, sg_count, i) { len_complete = sg_len; /* Complete sg-entries */ sg_len += sg->length; if (sg_len > *offset) break; } if (unlikely(i == sg_count)) { printk(KERN_ERR "%s: Bytes in sg: %zu, requested offset %zu, " "elements %d\n", __func__, sg_len, *offset, sg_count); WARN_ON(1); return NULL; } /* Offset starting from the beginning of first page in this sg-entry */ *offset = *offset - len_complete + sg->offset; page = sg_page(sg) + (*offset >> PAGE_SHIFT); *offset &= ~PAGE_MASK; /* Bytes in this sg-entry from *offset to the end of the page */ sg_len = PAGE_SIZE - *offset; if (*len > sg_len) *len = sg_len; return kmap_atomic(page); } EXPORT_SYMBOL(scsi_kmap_atomic_sg); /** * scsi_kunmap_atomic_sg - atomically unmap a virtual address, previously mapped with scsi_kmap_atomic_sg * @virt: virtual address to be unmapped */ void scsi_kunmap_atomic_sg(void *virt) { kunmap_atomic(virt); } EXPORT_SYMBOL(scsi_kunmap_atomic_sg); void sdev_disable_disk_events(struct scsi_device *sdev) { atomic_inc(&sdev->disk_events_disable_depth); } EXPORT_SYMBOL(sdev_disable_disk_events); void sdev_enable_disk_events(struct scsi_device *sdev) { if (WARN_ON_ONCE(atomic_read(&sdev->disk_events_disable_depth) <= 0)) return; atomic_dec(&sdev->disk_events_disable_depth); } EXPORT_SYMBOL(sdev_enable_disk_events); static unsigned char designator_prio(const unsigned char *d) { if (d[1] & 0x30) /* not associated with LUN */ return 0; if (d[3] == 0) /* invalid length */ return 0; /* * Order of preference for lun descriptor: * - SCSI name string * - NAA IEEE Registered Extended * - EUI-64 based 16-byte * - EUI-64 based 12-byte * - NAA IEEE Registered * - NAA IEEE Extended * - EUI-64 based 8-byte * - SCSI name string (truncated) * - T10 Vendor ID * as longer descriptors reduce the likelyhood * of identification clashes. */ switch (d[1] & 0xf) { case 8: /* SCSI name string, variable-length UTF-8 */ return 9; case 3: switch (d[4] >> 4) { case 6: /* NAA registered extended */ return 8; case 5: /* NAA registered */ return 5; case 4: /* NAA extended */ return 4; case 3: /* NAA locally assigned */ return 1; default: break; } break; case 2: switch (d[3]) { case 16: /* EUI64-based, 16 byte */ return 7; case 12: /* EUI64-based, 12 byte */ return 6; case 8: /* EUI64-based, 8 byte */ return 3; default: break; } break; case 1: /* T10 vendor ID */ return 1; default: break; } return 0; } /** * scsi_vpd_lun_id - return a unique device identification * @sdev: SCSI device * @id: buffer for the identification * @id_len: length of the buffer * * Copies a unique device identification into @id based * on the information in the VPD page 0x83 of the device. * The string will be formatted as a SCSI name string. * * Returns the length of the identification or error on failure. * If the identifier is longer than the supplied buffer the actual * identifier length is returned and the buffer is not zero-padded. */ int scsi_vpd_lun_id(struct scsi_device *sdev, char *id, size_t id_len) { u8 cur_id_prio = 0; u8 cur_id_size = 0; const unsigned char *d, *cur_id_str; const struct scsi_vpd *vpd_pg83; int id_size = -EINVAL; rcu_read_lock(); vpd_pg83 = rcu_dereference(sdev->vpd_pg83); if (!vpd_pg83) { rcu_read_unlock(); return -ENXIO; } /* The id string must be at least 20 bytes + terminating NULL byte */ if (id_len < 21) { rcu_read_unlock(); return -EINVAL; } memset(id, 0, id_len); for (d = vpd_pg83->data + 4; d < vpd_pg83->data + vpd_pg83->len; d += d[3] + 4) { u8 prio = designator_prio(d); if (prio == 0 || cur_id_prio > prio) continue; switch (d[1] & 0xf) { case 0x1: /* T10 Vendor ID */ if (cur_id_size > d[3]) break; cur_id_prio = prio; cur_id_size = d[3]; if (cur_id_size + 4 > id_len) cur_id_size = id_len - 4; cur_id_str = d + 4; id_size = snprintf(id, id_len, "t10.%*pE", cur_id_size, cur_id_str); break; case 0x2: /* EUI-64 */ cur_id_prio = prio; cur_id_size = d[3]; cur_id_str = d + 4; switch (cur_id_size) { case 8: id_size = snprintf(id, id_len, "eui.%8phN", cur_id_str); break; case 12: id_size = snprintf(id, id_len, "eui.%12phN", cur_id_str); break; case 16: id_size = snprintf(id, id_len, "eui.%16phN", cur_id_str); break; default: break; } break; case 0x3: /* NAA */ cur_id_prio = prio; cur_id_size = d[3]; cur_id_str = d + 4; switch (cur_id_size) { case 8: id_size = snprintf(id, id_len, "naa.%8phN", cur_id_str); break; case 16: id_size = snprintf(id, id_len, "naa.%16phN", cur_id_str); break; default: break; } break; case 0x8: /* SCSI name string */ if (cur_id_size > d[3]) break; /* Prefer others for truncated descriptor */ if (d[3] > id_len) { prio = 2; if (cur_id_prio > prio) break; } cur_id_prio = prio; cur_id_size = id_size = d[3]; cur_id_str = d + 4; if (cur_id_size >= id_len) cur_id_size = id_len - 1; memcpy(id, cur_id_str, cur_id_size); break; default: break; } } rcu_read_unlock(); return id_size; } EXPORT_SYMBOL(scsi_vpd_lun_id); /** * scsi_vpd_tpg_id - return a target port group identifier * @sdev: SCSI device * @rel_id: pointer to return relative target port in if not %NULL * * Returns the Target Port Group identifier from the information * from VPD page 0x83 of the device. * Optionally sets @rel_id to the relative target port on success. * * Return: the identifier or error on failure. */ int scsi_vpd_tpg_id(struct scsi_device *sdev, int *rel_id) { const unsigned char *d; const struct scsi_vpd *vpd_pg83; int group_id = -EAGAIN, rel_port = -1; rcu_read_lock(); vpd_pg83 = rcu_dereference(sdev->vpd_pg83); if (!vpd_pg83) { rcu_read_unlock(); return -ENXIO; } d = vpd_pg83->data + 4; while (d < vpd_pg83->data + vpd_pg83->len) { switch (d[1] & 0xf) { case 0x4: /* Relative target port */ rel_port = get_unaligned_be16(&d[6]); break; case 0x5: /* Target port group */ group_id = get_unaligned_be16(&d[6]); break; default: break; } d += d[3] + 4; } rcu_read_unlock(); if (group_id >= 0 && rel_id && rel_port != -1) *rel_id = rel_port; return group_id; } EXPORT_SYMBOL(scsi_vpd_tpg_id); /** * scsi_build_sense - build sense data for a command * @scmd: scsi command for which the sense should be formatted * @desc: Sense format (non-zero == descriptor format, * 0 == fixed format) * @key: Sense key * @asc: Additional sense code * @ascq: Additional sense code qualifier * **/ void scsi_build_sense(struct scsi_cmnd *scmd, int desc, u8 key, u8 asc, u8 ascq) { scsi_build_sense_buffer(desc, scmd->sense_buffer, key, asc, ascq); scmd->result = SAM_STAT_CHECK_CONDITION; } EXPORT_SYMBOL_GPL(scsi_build_sense); #ifdef CONFIG_SCSI_LIB_KUNIT_TEST #include "scsi_lib_test.c" #endif |
| 175 160 175 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | /* SPDX-License-Identifier: GPL-2.0 */ /* Perform sanity checking for object sizes for uaccess.h and uio.h. */ #ifndef __LINUX_UCOPYSIZE_H__ #define __LINUX_UCOPYSIZE_H__ #include <linux/bug.h> #ifdef CONFIG_HARDENED_USERCOPY #include <linux/jump_label.h> extern void __check_object_size(const void *ptr, unsigned long n, bool to_user); DECLARE_STATIC_KEY_MAYBE(CONFIG_HARDENED_USERCOPY_DEFAULT_ON, validate_usercopy_range); static __always_inline void check_object_size(const void *ptr, unsigned long n, bool to_user) { if (!__builtin_constant_p(n) && static_branch_maybe(CONFIG_HARDENED_USERCOPY_DEFAULT_ON, &validate_usercopy_range)) { __check_object_size(ptr, n, to_user); } } #else static inline void check_object_size(const void *ptr, unsigned long n, bool to_user) { } #endif /* CONFIG_HARDENED_USERCOPY */ extern void __compiletime_error("copy source size is too small") __bad_copy_from(void); extern void __compiletime_error("copy destination size is too small") __bad_copy_to(void); void __copy_overflow(int size, unsigned long count); static inline void copy_overflow(int size, unsigned long count) { if (IS_ENABLED(CONFIG_BUG)) __copy_overflow(size, count); } static __always_inline __must_check bool check_copy_size(const void *addr, size_t bytes, bool is_source) { int sz = __builtin_object_size(addr, 0); if (unlikely(sz >= 0 && sz < bytes)) { if (!__builtin_constant_p(bytes)) copy_overflow(sz, bytes); else if (is_source) __bad_copy_from(); else __bad_copy_to(); return false; } if (WARN_ON_ONCE(bytes > INT_MAX)) return false; check_object_size(addr, bytes, is_source); return true; } #endif /* __LINUX_UCOPYSIZE_H__ */ |
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1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 | // SPDX-License-Identifier: GPL-2.0 /* * cfg80211 MLME SAP interface * * Copyright (c) 2009, Jouni Malinen <j@w1.fi> * Copyright (c) 2015 Intel Deutschland GmbH * Copyright (C) 2019-2020, 2022-2025 Intel Corporation */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/etherdevice.h> #include <linux/netdevice.h> #include <linux/nl80211.h> #include <linux/slab.h> #include <linux/wireless.h> #include <net/cfg80211.h> #include <net/iw_handler.h> #include "core.h" #include "nl80211.h" #include "rdev-ops.h" void cfg80211_rx_assoc_resp(struct net_device *dev, const struct cfg80211_rx_assoc_resp_data *data) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)data->buf; struct cfg80211_connect_resp_params cr = { .timeout_reason = NL80211_TIMEOUT_UNSPECIFIED, .req_ie = data->req_ies, .req_ie_len = data->req_ies_len, .resp_ie = mgmt->u.assoc_resp.variable, .resp_ie_len = data->len - offsetof(struct ieee80211_mgmt, u.assoc_resp.variable), .status = le16_to_cpu(mgmt->u.assoc_resp.status_code), .ap_mld_addr = data->ap_mld_addr, }; unsigned int link_id; for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) { cr.links[link_id].status = data->links[link_id].status; cr.links[link_id].bss = data->links[link_id].bss; WARN_ON_ONCE(cr.links[link_id].status != WLAN_STATUS_SUCCESS && (!cr.ap_mld_addr || !cr.links[link_id].bss)); if (!cr.links[link_id].bss) continue; cr.links[link_id].bssid = data->links[link_id].bss->bssid; cr.links[link_id].addr = data->links[link_id].addr; /* need to have local link addresses for MLO connections */ WARN_ON(cr.ap_mld_addr && !is_valid_ether_addr(cr.links[link_id].addr)); BUG_ON(!cr.links[link_id].bss->channel); if (cr.links[link_id].bss->channel->band == NL80211_BAND_S1GHZ) { WARN_ON(link_id); cr.resp_ie = (u8 *)&mgmt->u.s1g_assoc_resp.variable; cr.resp_ie_len = data->len - offsetof(struct ieee80211_mgmt, u.s1g_assoc_resp.variable); } if (cr.ap_mld_addr) cr.valid_links |= BIT(link_id); } trace_cfg80211_send_rx_assoc(dev, data); /* * This is a bit of a hack, we don't notify userspace of * a (re-)association reply if we tried to send a reassoc * and got a reject -- we only try again with an assoc * frame instead of reassoc. */ if (cfg80211_sme_rx_assoc_resp(wdev, cr.status)) { for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) { struct cfg80211_bss *bss = data->links[link_id].bss; if (!bss) continue; cfg80211_unhold_bss(bss_from_pub(bss)); cfg80211_put_bss(wiphy, bss); } return; } nl80211_send_rx_assoc(rdev, dev, data); /* update current_bss etc., consumes the bss reference */ __cfg80211_connect_result(dev, &cr, cr.status == WLAN_STATUS_SUCCESS); } EXPORT_SYMBOL(cfg80211_rx_assoc_resp); static void cfg80211_process_auth(struct wireless_dev *wdev, const u8 *buf, size_t len) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL); cfg80211_sme_rx_auth(wdev, buf, len); } static void cfg80211_process_deauth(struct wireless_dev *wdev, const u8 *buf, size_t len, bool reconnect) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; const u8 *bssid = mgmt->bssid; u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); nl80211_send_deauth(rdev, wdev->netdev, buf, len, reconnect, GFP_KERNEL); if (!wdev->connected || !ether_addr_equal(wdev->u.client.connected_addr, bssid)) return; __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); cfg80211_sme_deauth(wdev); } static void cfg80211_process_disassoc(struct wireless_dev *wdev, const u8 *buf, size_t len, bool reconnect) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; const u8 *bssid = mgmt->bssid; u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); nl80211_send_disassoc(rdev, wdev->netdev, buf, len, reconnect, GFP_KERNEL); if (WARN_ON(!wdev->connected || !ether_addr_equal(wdev->u.client.connected_addr, bssid))) return; __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); cfg80211_sme_disassoc(wdev); } void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct ieee80211_mgmt *mgmt = (void *)buf; lockdep_assert_wiphy(wdev->wiphy); trace_cfg80211_rx_mlme_mgmt(dev, buf, len); if (WARN_ON(len < 2)) return; if (ieee80211_is_auth(mgmt->frame_control)) cfg80211_process_auth(wdev, buf, len); else if (ieee80211_is_deauth(mgmt->frame_control)) cfg80211_process_deauth(wdev, buf, len, false); else if (ieee80211_is_disassoc(mgmt->frame_control)) cfg80211_process_disassoc(wdev, buf, len, false); } EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt); void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); trace_cfg80211_send_auth_timeout(dev, addr); nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); cfg80211_sme_auth_timeout(wdev); } EXPORT_SYMBOL(cfg80211_auth_timeout); void cfg80211_assoc_failure(struct net_device *dev, struct cfg80211_assoc_failure *data) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); const u8 *addr = data->ap_mld_addr ?: data->bss[0]->bssid; int i; trace_cfg80211_send_assoc_failure(dev, data); if (data->timeout) { nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL); cfg80211_sme_assoc_timeout(wdev); } else { cfg80211_sme_abandon_assoc(wdev); } for (i = 0; i < ARRAY_SIZE(data->bss); i++) { struct cfg80211_bss *bss = data->bss[i]; if (!bss) continue; cfg80211_unhold_bss(bss_from_pub(bss)); cfg80211_put_bss(wiphy, bss); } } EXPORT_SYMBOL(cfg80211_assoc_failure); void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len, bool reconnect) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct ieee80211_mgmt *mgmt = (void *)buf; lockdep_assert_wiphy(wdev->wiphy); trace_cfg80211_tx_mlme_mgmt(dev, buf, len, reconnect); if (WARN_ON(len < 2)) return; if (ieee80211_is_deauth(mgmt->frame_control)) cfg80211_process_deauth(wdev, buf, len, reconnect); else cfg80211_process_disassoc(wdev, buf, len, reconnect); } EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt); void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, enum nl80211_key_type key_type, int key_id, const u8 *tsc, gfp_t gfp) { struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); #ifdef CONFIG_CFG80211_WEXT union iwreq_data wrqu; char *buf = kmalloc(128, gfp); if (buf) { memset(&wrqu, 0, sizeof(wrqu)); wrqu.data.length = sprintf(buf, "MLME-MICHAELMICFAILURE." "indication(keyid=%d %scast addr=%pM)", key_id, key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni", addr); wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); kfree(buf); } #endif trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc); nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp); } EXPORT_SYMBOL(cfg80211_michael_mic_failure); /* some MLME handling for userspace SME */ int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_auth_request *req) { struct wireless_dev *wdev = dev->ieee80211_ptr; lockdep_assert_wiphy(wdev->wiphy); if (!req->bss) return -ENOENT; if (req->link_id >= 0 && !(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) return -EINVAL; if (req->auth_type == NL80211_AUTHTYPE_SHARED_KEY) { if (!req->key || !req->key_len || req->key_idx < 0 || req->key_idx > 3) return -EINVAL; } if (wdev->connected && ether_addr_equal(req->bss->bssid, wdev->u.client.connected_addr)) return -EALREADY; if (ether_addr_equal(req->bss->bssid, dev->dev_addr) || (req->link_id >= 0 && ether_addr_equal(req->ap_mld_addr, dev->dev_addr))) return -EINVAL; return rdev_auth(rdev, dev, req); } /* Do a logical ht_capa &= ht_capa_mask. */ void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, const struct ieee80211_ht_cap *ht_capa_mask) { int i; u8 *p1, *p2; if (!ht_capa_mask) { memset(ht_capa, 0, sizeof(*ht_capa)); return; } p1 = (u8*)(ht_capa); p2 = (u8*)(ht_capa_mask); for (i = 0; i < sizeof(*ht_capa); i++) p1[i] &= p2[i]; } /* Do a logical vht_capa &= vht_capa_mask. */ void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa, const struct ieee80211_vht_cap *vht_capa_mask) { int i; u8 *p1, *p2; if (!vht_capa_mask) { memset(vht_capa, 0, sizeof(*vht_capa)); return; } p1 = (u8*)(vht_capa); p2 = (u8*)(vht_capa_mask); for (i = 0; i < sizeof(*vht_capa); i++) p1[i] &= p2[i]; } static int cfg80211_mlme_check_mlo_compat(const struct ieee80211_multi_link_elem *mle_a, const struct ieee80211_multi_link_elem *mle_b, struct netlink_ext_ack *extack) { const struct ieee80211_mle_basic_common_info *common_a, *common_b; common_a = (const void *)mle_a->variable; common_b = (const void *)mle_b->variable; if (memcmp(common_a->mld_mac_addr, common_b->mld_mac_addr, ETH_ALEN)) { NL_SET_ERR_MSG(extack, "AP MLD address mismatch"); return -EINVAL; } if (ieee80211_mle_get_eml_cap((const u8 *)mle_a) != ieee80211_mle_get_eml_cap((const u8 *)mle_b)) { NL_SET_ERR_MSG(extack, "link EML capabilities mismatch"); return -EINVAL; } if (ieee80211_mle_get_mld_capa_op((const u8 *)mle_a) != ieee80211_mle_get_mld_capa_op((const u8 *)mle_b)) { NL_SET_ERR_MSG(extack, "link MLD capabilities/ops mismatch"); return -EINVAL; } /* * Only verify the values in Extended MLD Capabilities that are * not reserved when transmitted by an AP (and expected to remain the * same over time). * The Recommended Max Simultaneous Links subfield in particular is * reserved when included in a unicast Probe Response frame and may * also change when the AP adds/removes links. The BTM MLD * Recommendation For Multiple APs Support subfield is reserved when * transmitted by an AP. All other bits are currently reserved. * See IEEE P802.11be/D7.0, Table 9-417o. */ if ((ieee80211_mle_get_ext_mld_capa_op((const u8 *)mle_a) & (IEEE80211_EHT_ML_EXT_MLD_CAPA_OP_PARAM_UPDATE | IEEE80211_EHT_ML_EXT_MLD_CAPA_NSTR_UPDATE | IEEE80211_EHT_ML_EXT_MLD_CAPA_EMLSR_ENA_ON_ONE_LINK)) != (ieee80211_mle_get_ext_mld_capa_op((const u8 *)mle_b) & (IEEE80211_EHT_ML_EXT_MLD_CAPA_OP_PARAM_UPDATE | IEEE80211_EHT_ML_EXT_MLD_CAPA_NSTR_UPDATE | IEEE80211_EHT_ML_EXT_MLD_CAPA_EMLSR_ENA_ON_ONE_LINK))) { NL_SET_ERR_MSG(extack, "extended link MLD capabilities/ops mismatch"); return -EINVAL; } return 0; } static int cfg80211_mlme_check_mlo(struct net_device *dev, struct cfg80211_assoc_request *req, struct netlink_ext_ack *extack) { const struct ieee80211_multi_link_elem *mles[ARRAY_SIZE(req->links)] = {}; int i; if (req->link_id < 0) return 0; if (!req->links[req->link_id].bss) { NL_SET_ERR_MSG(extack, "no BSS for assoc link"); return -EINVAL; } rcu_read_lock(); for (i = 0; i < ARRAY_SIZE(req->links); i++) { const struct cfg80211_bss_ies *ies; const struct element *ml; if (!req->links[i].bss) continue; if (ether_addr_equal(req->links[i].bss->bssid, dev->dev_addr)) { NL_SET_ERR_MSG(extack, "BSSID must not be our address"); req->links[i].error = -EINVAL; goto error; } ies = rcu_dereference(req->links[i].bss->ies); ml = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_MULTI_LINK, ies->data, ies->len); if (!ml) { NL_SET_ERR_MSG(extack, "MLO BSS w/o ML element"); req->links[i].error = -EINVAL; goto error; } if (!ieee80211_mle_type_ok(ml->data + 1, IEEE80211_ML_CONTROL_TYPE_BASIC, ml->datalen - 1)) { NL_SET_ERR_MSG(extack, "BSS with invalid ML element"); req->links[i].error = -EINVAL; goto error; } mles[i] = (const void *)(ml->data + 1); if (ieee80211_mle_get_link_id((const u8 *)mles[i]) != i) { NL_SET_ERR_MSG(extack, "link ID mismatch"); req->links[i].error = -EINVAL; goto error; } } if (WARN_ON(!mles[req->link_id])) goto error; for (i = 0; i < ARRAY_SIZE(req->links); i++) { if (i == req->link_id || !req->links[i].bss) continue; if (WARN_ON(!mles[i])) goto error; if (cfg80211_mlme_check_mlo_compat(mles[req->link_id], mles[i], extack)) { req->links[i].error = -EINVAL; goto error; } } rcu_read_unlock(); return 0; error: rcu_read_unlock(); return -EINVAL; } /* Note: caller must cfg80211_put_bss() regardless of result */ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_assoc_request *req, struct netlink_ext_ack *extack) { struct wireless_dev *wdev = dev->ieee80211_ptr; int err; lockdep_assert_wiphy(wdev->wiphy); err = cfg80211_mlme_check_mlo(dev, req, extack); if (err) return err; if (wdev->connected && (!req->prev_bssid || !ether_addr_equal(wdev->u.client.connected_addr, req->prev_bssid))) return -EALREADY; if ((req->bss && ether_addr_equal(req->bss->bssid, dev->dev_addr)) || (req->link_id >= 0 && ether_addr_equal(req->ap_mld_addr, dev->dev_addr))) return -EINVAL; cfg80211_oper_and_ht_capa(&req->ht_capa_mask, rdev->wiphy.ht_capa_mod_mask); cfg80211_oper_and_vht_capa(&req->vht_capa_mask, rdev->wiphy.vht_capa_mod_mask); err = rdev_assoc(rdev, dev, req); if (!err) { int link_id; if (req->bss) { cfg80211_ref_bss(&rdev->wiphy, req->bss); cfg80211_hold_bss(bss_from_pub(req->bss)); } for (link_id = 0; link_id < ARRAY_SIZE(req->links); link_id++) { if (!req->links[link_id].bss) continue; cfg80211_ref_bss(&rdev->wiphy, req->links[link_id].bss); cfg80211_hold_bss(bss_from_pub(req->links[link_id].bss)); } } return err; } int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, struct net_device *dev, const u8 *bssid, const u8 *ie, int ie_len, u16 reason, bool local_state_change) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_deauth_request req = { .bssid = bssid, .reason_code = reason, .ie = ie, .ie_len = ie_len, .local_state_change = local_state_change, }; lockdep_assert_wiphy(wdev->wiphy); if (local_state_change && (!wdev->connected || !ether_addr_equal(wdev->u.client.connected_addr, bssid))) return 0; if (ether_addr_equal(wdev->disconnect_bssid, bssid) || (wdev->connected && ether_addr_equal(wdev->u.client.connected_addr, bssid))) wdev->conn_owner_nlportid = 0; return rdev_deauth(rdev, dev, &req); } int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, struct net_device *dev, const u8 *ap_addr, const u8 *ie, int ie_len, u16 reason, bool local_state_change) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_disassoc_request req = { .reason_code = reason, .local_state_change = local_state_change, .ie = ie, .ie_len = ie_len, .ap_addr = ap_addr, }; int err; lockdep_assert_wiphy(wdev->wiphy); if (!wdev->connected) return -ENOTCONN; if (memcmp(wdev->u.client.connected_addr, ap_addr, ETH_ALEN)) return -ENOTCONN; err = rdev_disassoc(rdev, dev, &req); if (err) return err; /* driver should have reported the disassoc */ WARN_ON(wdev->connected); return 0; } void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, struct net_device *dev) { struct wireless_dev *wdev = dev->ieee80211_ptr; u8 bssid[ETH_ALEN]; lockdep_assert_wiphy(wdev->wiphy); if (!rdev->ops->deauth) return; if (!wdev->connected) return; memcpy(bssid, wdev->u.client.connected_addr, ETH_ALEN); cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, WLAN_REASON_DEAUTH_LEAVING, false); } struct cfg80211_mgmt_registration { struct list_head list; struct wireless_dev *wdev; u32 nlportid; int match_len; __le16 frame_type; bool multicast_rx; u8 match[]; }; static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct wireless_dev *tmp; struct cfg80211_mgmt_registration *reg; struct mgmt_frame_regs upd = {}; lockdep_assert_held(&rdev->wiphy.mtx); spin_lock_bh(&rdev->mgmt_registrations_lock); if (!wdev->mgmt_registrations_need_update) { spin_unlock_bh(&rdev->mgmt_registrations_lock); return; } rcu_read_lock(); list_for_each_entry_rcu(tmp, &rdev->wiphy.wdev_list, list) { list_for_each_entry(reg, &tmp->mgmt_registrations, list) { u32 mask = BIT(le16_to_cpu(reg->frame_type) >> 4); u32 mcast_mask = 0; if (reg->multicast_rx) mcast_mask = mask; upd.global_stypes |= mask; upd.global_mcast_stypes |= mcast_mask; if (tmp == wdev) { upd.interface_stypes |= mask; upd.interface_mcast_stypes |= mcast_mask; } } } rcu_read_unlock(); wdev->mgmt_registrations_need_update = 0; spin_unlock_bh(&rdev->mgmt_registrations_lock); rdev_update_mgmt_frame_registrations(rdev, wdev, &upd); } void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk) { struct cfg80211_registered_device *rdev; struct wireless_dev *wdev; rdev = container_of(wk, struct cfg80211_registered_device, mgmt_registrations_update_wk); guard(wiphy)(&rdev->wiphy); list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) cfg80211_mgmt_registrations_update(wdev); } int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid, u16 frame_type, const u8 *match_data, int match_len, bool multicast_rx, struct netlink_ext_ack *extack) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct cfg80211_mgmt_registration *reg, *nreg; int err = 0; u16 mgmt_type; bool update_multicast = false; if (!wdev->wiphy->mgmt_stypes) return -EOPNOTSUPP; if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) { NL_SET_ERR_MSG(extack, "frame type not management"); return -EINVAL; } if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) { NL_SET_ERR_MSG(extack, "Invalid frame type"); return -EINVAL; } mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) { NL_SET_ERR_MSG(extack, "Registration to specific type not supported"); return -EINVAL; } /* * To support Pre Association Security Negotiation (PASN), registration * for authentication frames should be supported. However, as some * versions of the user space daemons wrongly register to all types of * authentication frames (which might result in unexpected behavior) * allow such registration if the request is for a specific * authentication algorithm number. */ if (wdev->iftype == NL80211_IFTYPE_STATION && (frame_type & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_AUTH && !(match_data && match_len >= 2)) { NL_SET_ERR_MSG(extack, "Authentication algorithm number required"); return -EINVAL; } nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); if (!nreg) return -ENOMEM; spin_lock_bh(&rdev->mgmt_registrations_lock); list_for_each_entry(reg, &wdev->mgmt_registrations, list) { int mlen = min(match_len, reg->match_len); if (frame_type != le16_to_cpu(reg->frame_type)) continue; if (memcmp(reg->match, match_data, mlen) == 0) { if (reg->multicast_rx != multicast_rx) { update_multicast = true; reg->multicast_rx = multicast_rx; break; } NL_SET_ERR_MSG(extack, "Match already configured"); err = -EALREADY; break; } } if (err) goto out; if (update_multicast) { kfree(nreg); } else { memcpy(nreg->match, match_data, match_len); nreg->match_len = match_len; nreg->nlportid = snd_portid; nreg->frame_type = cpu_to_le16(frame_type); nreg->wdev = wdev; nreg->multicast_rx = multicast_rx; list_add(&nreg->list, &wdev->mgmt_registrations); } wdev->mgmt_registrations_need_update = 1; spin_unlock_bh(&rdev->mgmt_registrations_lock); cfg80211_mgmt_registrations_update(wdev); return 0; out: kfree(nreg); spin_unlock_bh(&rdev->mgmt_registrations_lock); return err; } void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid) { struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_mgmt_registration *reg, *tmp; spin_lock_bh(&rdev->mgmt_registrations_lock); list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { if (reg->nlportid != nlportid) continue; list_del(®->list); kfree(reg); wdev->mgmt_registrations_need_update = 1; schedule_work(&rdev->mgmt_registrations_update_wk); } spin_unlock_bh(&rdev->mgmt_registrations_lock); if (nlportid && rdev->crit_proto_nlportid == nlportid) { rdev->crit_proto_nlportid = 0; rdev_crit_proto_stop(rdev, wdev); } if (nlportid == wdev->ap_unexpected_nlportid) wdev->ap_unexpected_nlportid = 0; } void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct cfg80211_mgmt_registration *reg, *tmp; spin_lock_bh(&rdev->mgmt_registrations_lock); list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { list_del(®->list); kfree(reg); } wdev->mgmt_registrations_need_update = 1; spin_unlock_bh(&rdev->mgmt_registrations_lock); cfg80211_mgmt_registrations_update(wdev); } static bool cfg80211_allowed_address(struct wireless_dev *wdev, const u8 *addr) { int i; for_each_valid_link(wdev, i) { if (ether_addr_equal(addr, wdev->links[i].addr)) return true; } return ether_addr_equal(addr, wdev_address(wdev)); } static bool cfg80211_allowed_random_address(struct wireless_dev *wdev, const struct ieee80211_mgmt *mgmt) { if (ieee80211_is_auth(mgmt->frame_control) || ieee80211_is_deauth(mgmt->frame_control)) { /* Allow random TA to be used with authentication and * deauthentication frames if the driver has indicated support. */ if (wiphy_ext_feature_isset( wdev->wiphy, NL80211_EXT_FEATURE_AUTH_AND_DEAUTH_RANDOM_TA)) return true; } else if (ieee80211_is_action(mgmt->frame_control) && mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { /* Allow random TA to be used with Public Action frames if the * driver has indicated support. */ if (!wdev->connected && wiphy_ext_feature_isset( wdev->wiphy, NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA)) return true; if (wdev->connected && wiphy_ext_feature_isset( wdev->wiphy, NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA_CONNECTED)) return true; } return false; } int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_mgmt_tx_params *params, u64 *cookie) { const struct ieee80211_mgmt *mgmt; u16 stype; lockdep_assert_wiphy(&rdev->wiphy); if (!wdev->wiphy->mgmt_stypes) return -EOPNOTSUPP; if (!rdev->ops->mgmt_tx) return -EOPNOTSUPP; if (params->len < 24 + 1) return -EINVAL; mgmt = (const struct ieee80211_mgmt *)params->buf; if (!ieee80211_is_mgmt(mgmt->frame_control) || ieee80211_has_order(mgmt->frame_control)) return -EINVAL; stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4))) return -EINVAL; if (ieee80211_is_action(mgmt->frame_control) && mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { int err = 0; switch (wdev->iftype) { case NL80211_IFTYPE_ADHOC: /* * check for IBSS DA must be done by driver as * cfg80211 doesn't track the stations */ if (!wdev->u.ibss.current_bss || !ether_addr_equal(wdev->u.ibss.current_bss->pub.bssid, mgmt->bssid)) { err = -ENOTCONN; break; } break; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_CLIENT: if (!wdev->connected) { err = -ENOTCONN; break; } /* FIXME: MLD may address this differently */ if (!ether_addr_equal(wdev->u.client.connected_addr, mgmt->bssid)) { err = -ENOTCONN; break; } /* for station, check that DA is the AP */ if (!ether_addr_equal(wdev->u.client.connected_addr, mgmt->da)) { err = -ENOTCONN; break; } break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_AP_VLAN: if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev)) && (params->link_id < 0 || !ether_addr_equal(mgmt->bssid, wdev->links[params->link_id].addr))) err = -EINVAL; break; case NL80211_IFTYPE_MESH_POINT: if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) { err = -EINVAL; break; } /* * check for mesh DA must be done by driver as * cfg80211 doesn't track the stations */ break; case NL80211_IFTYPE_P2P_DEVICE: /* * fall through, P2P device only supports * public action frames */ case NL80211_IFTYPE_NAN: default: err = -EOPNOTSUPP; break; } if (err) return err; } if (!cfg80211_allowed_address(wdev, mgmt->sa) && !cfg80211_allowed_random_address(wdev, mgmt)) return -EINVAL; /* Transmit the management frame as requested by user space */ return rdev_mgmt_tx(rdev, wdev, params, cookie); } bool cfg80211_rx_mgmt_ext(struct wireless_dev *wdev, struct cfg80211_rx_info *info) { struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_mgmt_registration *reg; const struct ieee80211_txrx_stypes *stypes = &wiphy->mgmt_stypes[wdev->iftype]; struct ieee80211_mgmt *mgmt = (void *)info->buf; const u8 *data; int data_len; bool result = false; __le16 ftype = mgmt->frame_control & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE); u16 stype; trace_cfg80211_rx_mgmt(wdev, info); stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4; if (!(stypes->rx & BIT(stype))) { trace_cfg80211_return_bool(false); return false; } data = info->buf + ieee80211_hdrlen(mgmt->frame_control); data_len = info->len - ieee80211_hdrlen(mgmt->frame_control); spin_lock_bh(&rdev->mgmt_registrations_lock); list_for_each_entry(reg, &wdev->mgmt_registrations, list) { if (reg->frame_type != ftype) continue; if (reg->match_len > data_len) continue; if (memcmp(reg->match, data, reg->match_len)) continue; /* found match! */ /* Indicate the received Action frame to user space */ if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, info, GFP_ATOMIC)) continue; result = true; break; } spin_unlock_bh(&rdev->mgmt_registrations_lock); trace_cfg80211_return_bool(result); return result; } EXPORT_SYMBOL(cfg80211_rx_mgmt_ext); void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev) { cancel_delayed_work(&rdev->dfs_update_channels_wk); queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, 0); } void cfg80211_dfs_channels_update_work(struct work_struct *work) { struct delayed_work *delayed_work = to_delayed_work(work); struct cfg80211_registered_device *rdev; struct cfg80211_chan_def chandef; struct ieee80211_supported_band *sband; struct ieee80211_channel *c; struct wiphy *wiphy; bool check_again = false; unsigned long timeout, next_time = 0; unsigned long time_dfs_update; enum nl80211_radar_event radar_event; int bandid, i; rdev = container_of(delayed_work, struct cfg80211_registered_device, dfs_update_channels_wk); wiphy = &rdev->wiphy; rtnl_lock(); for (bandid = 0; bandid < NUM_NL80211_BANDS; bandid++) { sband = wiphy->bands[bandid]; if (!sband) continue; for (i = 0; i < sband->n_channels; i++) { c = &sband->channels[i]; if (!(c->flags & IEEE80211_CHAN_RADAR)) continue; if (c->dfs_state != NL80211_DFS_UNAVAILABLE && c->dfs_state != NL80211_DFS_AVAILABLE) continue; if (c->dfs_state == NL80211_DFS_UNAVAILABLE) { time_dfs_update = IEEE80211_DFS_MIN_NOP_TIME_MS; radar_event = NL80211_RADAR_NOP_FINISHED; } else { if (regulatory_pre_cac_allowed(wiphy) || cfg80211_any_wiphy_oper_chan(wiphy, c)) continue; time_dfs_update = REG_PRE_CAC_EXPIRY_GRACE_MS; radar_event = NL80211_RADAR_PRE_CAC_EXPIRED; } timeout = c->dfs_state_entered + msecs_to_jiffies(time_dfs_update); if (time_after_eq(jiffies, timeout)) { c->dfs_state = NL80211_DFS_USABLE; c->dfs_state_entered = jiffies; cfg80211_chandef_create(&chandef, c, NL80211_CHAN_NO_HT); nl80211_radar_notify(rdev, &chandef, radar_event, NULL, GFP_ATOMIC); regulatory_propagate_dfs_state(wiphy, &chandef, c->dfs_state, radar_event); continue; } if (!check_again) next_time = timeout - jiffies; else next_time = min(next_time, timeout - jiffies); check_again = true; } } rtnl_unlock(); /* reschedule if there are other channels waiting to be cleared again */ if (check_again) queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, next_time); } void __cfg80211_radar_event(struct wiphy *wiphy, struct cfg80211_chan_def *chandef, bool offchan, gfp_t gfp) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); trace_cfg80211_radar_event(wiphy, chandef, offchan); /* only set the chandef supplied channel to unavailable, in * case the radar is detected on only one of multiple channels * spanned by the chandef. */ cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE); if (offchan) queue_work(cfg80211_wq, &rdev->background_cac_abort_wk); cfg80211_sched_dfs_chan_update(rdev); nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp); memcpy(&rdev->radar_chandef, chandef, sizeof(struct cfg80211_chan_def)); queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk); } EXPORT_SYMBOL(__cfg80211_radar_event); void cfg80211_cac_event(struct net_device *netdev, const struct cfg80211_chan_def *chandef, enum nl80211_radar_event event, gfp_t gfp, unsigned int link_id) { struct wireless_dev *wdev = netdev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); unsigned long timeout; if (WARN_ON(wdev->valid_links && !(wdev->valid_links & BIT(link_id)))) return; trace_cfg80211_cac_event(netdev, event, link_id); if (WARN_ON(!wdev->links[link_id].cac_started && event != NL80211_RADAR_CAC_STARTED)) return; switch (event) { case NL80211_RADAR_CAC_FINISHED: timeout = wdev->links[link_id].cac_start_time + msecs_to_jiffies(wdev->links[link_id].cac_time_ms); WARN_ON(!time_after_eq(jiffies, timeout)); cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE); memcpy(&rdev->cac_done_chandef, chandef, sizeof(struct cfg80211_chan_def)); queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk); cfg80211_sched_dfs_chan_update(rdev); fallthrough; case NL80211_RADAR_CAC_ABORTED: wdev->links[link_id].cac_started = false; break; case NL80211_RADAR_CAC_STARTED: wdev->links[link_id].cac_started = true; break; default: WARN_ON(1); return; } nl80211_radar_notify(rdev, chandef, event, netdev, gfp); } EXPORT_SYMBOL(cfg80211_cac_event); static void __cfg80211_background_cac_event(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, const struct cfg80211_chan_def *chandef, enum nl80211_radar_event event) { struct wiphy *wiphy = &rdev->wiphy; struct net_device *netdev; lockdep_assert_wiphy(&rdev->wiphy); if (!cfg80211_chandef_valid(chandef)) return; if (!rdev->background_radar_wdev) return; switch (event) { case NL80211_RADAR_CAC_FINISHED: cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE); memcpy(&rdev->cac_done_chandef, chandef, sizeof(*chandef)); queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk); cfg80211_sched_dfs_chan_update(rdev); wdev = rdev->background_radar_wdev; break; case NL80211_RADAR_CAC_ABORTED: if (!cancel_delayed_work(&rdev->background_cac_done_wk)) return; wdev = rdev->background_radar_wdev; break; case NL80211_RADAR_CAC_STARTED: break; default: return; } netdev = wdev ? wdev->netdev : NULL; nl80211_radar_notify(rdev, chandef, event, netdev, GFP_KERNEL); } static void cfg80211_background_cac_event(struct cfg80211_registered_device *rdev, const struct cfg80211_chan_def *chandef, enum nl80211_radar_event event) { guard(wiphy)(&rdev->wiphy); __cfg80211_background_cac_event(rdev, rdev->background_radar_wdev, chandef, event); } void cfg80211_background_cac_done_wk(struct work_struct *work) { struct delayed_work *delayed_work = to_delayed_work(work); struct cfg80211_registered_device *rdev; rdev = container_of(delayed_work, struct cfg80211_registered_device, background_cac_done_wk); cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef, NL80211_RADAR_CAC_FINISHED); } void cfg80211_background_cac_abort_wk(struct work_struct *work) { struct cfg80211_registered_device *rdev; rdev = container_of(work, struct cfg80211_registered_device, background_cac_abort_wk); cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef, NL80211_RADAR_CAC_ABORTED); } void cfg80211_background_cac_abort(struct wiphy *wiphy) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); queue_work(cfg80211_wq, &rdev->background_cac_abort_wk); } EXPORT_SYMBOL(cfg80211_background_cac_abort); int cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_chan_def *chandef) { unsigned int cac_time_ms; int err; lockdep_assert_wiphy(&rdev->wiphy); if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_RADAR_BACKGROUND)) return -EOPNOTSUPP; /* Offchannel chain already locked by another wdev */ if (rdev->background_radar_wdev && rdev->background_radar_wdev != wdev) return -EBUSY; /* CAC already in progress on the offchannel chain */ if (rdev->background_radar_wdev == wdev && delayed_work_pending(&rdev->background_cac_done_wk)) return -EBUSY; err = rdev_set_radar_background(rdev, chandef); if (err) return err; cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, chandef); if (!cac_time_ms) cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; rdev->background_radar_chandef = *chandef; rdev->background_radar_wdev = wdev; /* Get offchain ownership */ __cfg80211_background_cac_event(rdev, wdev, chandef, NL80211_RADAR_CAC_STARTED); queue_delayed_work(cfg80211_wq, &rdev->background_cac_done_wk, msecs_to_jiffies(cac_time_ms)); return 0; } void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev) { struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); lockdep_assert_wiphy(wiphy); if (wdev != rdev->background_radar_wdev) return; rdev_set_radar_background(rdev, NULL); rdev->background_radar_wdev = NULL; /* Release offchain ownership */ __cfg80211_background_cac_event(rdev, wdev, &rdev->background_radar_chandef, NL80211_RADAR_CAC_ABORTED); } int cfg80211_assoc_ml_reconf(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_ml_reconf_req *req) { struct wireless_dev *wdev = dev->ieee80211_ptr; int err; lockdep_assert_wiphy(wdev->wiphy); err = rdev_assoc_ml_reconf(rdev, dev, req); if (!err) { int link_id; for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { if (!req->add_links[link_id].bss) continue; cfg80211_ref_bss(&rdev->wiphy, req->add_links[link_id].bss); cfg80211_hold_bss(bss_from_pub(req->add_links[link_id].bss)); } } return err; } void cfg80211_mlo_reconf_add_done(struct net_device *dev, struct cfg80211_mlo_reconf_done_data *data) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; int link_id; lockdep_assert_wiphy(wiphy); trace_cfg80211_mlo_reconf_add_done(dev, data->added_links, data->buf, data->len, data->driver_initiated); if (WARN_ON(!wdev->valid_links)) return; if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) return; /* validate that a BSS is given for each added link */ for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) { struct cfg80211_bss *bss = data->links[link_id].bss; if (!(data->added_links & BIT(link_id))) continue; if (WARN_ON(!bss)) return; } for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) { struct cfg80211_bss *bss = data->links[link_id].bss; if (!bss) continue; if (data->added_links & BIT(link_id)) { wdev->links[link_id].client.current_bss = bss_from_pub(bss); if (data->driver_initiated) cfg80211_hold_bss(bss_from_pub(bss)); memcpy(wdev->links[link_id].addr, data->links[link_id].addr, ETH_ALEN); } else { if (!data->driver_initiated) cfg80211_unhold_bss(bss_from_pub(bss)); cfg80211_put_bss(wiphy, bss); } } wdev->valid_links |= data->added_links; nl80211_mlo_reconf_add_done(dev, data); } EXPORT_SYMBOL(cfg80211_mlo_reconf_add_done); |
| 1 1 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 | // SPDX-License-Identifier: GPL-2.0 /* * Emagic EMI 2|6 usb audio interface firmware loader. * Copyright (C) 2002 * Tapio Laxström (tapio.laxstrom@iptime.fi) * * emi26.c,v 1.13 2002/03/08 13:10:26 tapio Exp */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/usb.h> #include <linux/delay.h> #include <linux/firmware.h> #include <linux/ihex.h> #define EMI26_VENDOR_ID 0x086a /* Emagic Soft-und Hardware GmBH */ #define EMI26_PRODUCT_ID 0x0100 /* EMI 2|6 without firmware */ #define EMI26B_PRODUCT_ID 0x0102 /* EMI 2|6 without firmware */ #define ANCHOR_LOAD_INTERNAL 0xA0 /* Vendor specific request code for Anchor Upload/Download (This one is implemented in the core) */ #define ANCHOR_LOAD_EXTERNAL 0xA3 /* This command is not implemented in the core. Requires firmware */ #define ANCHOR_LOAD_FPGA 0xA5 /* This command is not implemented in the core. Requires firmware. Emagic extension */ #define MAX_INTERNAL_ADDRESS 0x1B3F /* This is the highest internal RAM address for the AN2131Q */ #define CPUCS_REG 0x7F92 /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */ #define INTERNAL_RAM(address) (address <= MAX_INTERNAL_ADDRESS) static int emi26_writememory( struct usb_device *dev, int address, const unsigned char *data, int length, __u8 bRequest); static int emi26_set_reset(struct usb_device *dev, unsigned char reset_bit); static int emi26_load_firmware (struct usb_device *dev); static int emi26_probe(struct usb_interface *intf, const struct usb_device_id *id); static void emi26_disconnect(struct usb_interface *intf); /* thanks to drivers/usb/serial/keyspan_pda.c code */ static int emi26_writememory (struct usb_device *dev, int address, const unsigned char *data, int length, __u8 request) { int result; unsigned char *buffer = kmemdup(data, length, GFP_KERNEL); if (!buffer) { dev_err(&dev->dev, "kmalloc(%d) failed.\n", length); return -ENOMEM; } /* Note: usb_control_msg returns negative value on error or length of the * data that was written! */ result = usb_control_msg (dev, usb_sndctrlpipe(dev, 0), request, 0x40, address, 0, buffer, length, 300); kfree (buffer); return result; } /* thanks to drivers/usb/serial/keyspan_pda.c code */ static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit) { int response; dev_info(&dev->dev, "%s - %d\n", __func__, reset_bit); /* printk(KERN_DEBUG "%s - %d", __func__, reset_bit); */ response = emi26_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0); if (response < 0) { dev_err(&dev->dev, "set_reset (%d) failed\n", reset_bit); } return response; } #define FW_LOAD_SIZE 1023 static int emi26_load_firmware (struct usb_device *dev) { const struct firmware *loader_fw = NULL; const struct firmware *bitstream_fw = NULL; const struct firmware *firmware_fw = NULL; const struct ihex_binrec *rec; int err = -ENOMEM; int i; __u32 addr; /* Address to write */ __u8 *buf; buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL); if (!buf) goto wraperr; err = request_ihex_firmware(&loader_fw, "emi26/loader.fw", &dev->dev); if (err) goto nofw; err = request_ihex_firmware(&bitstream_fw, "emi26/bitstream.fw", &dev->dev); if (err) goto nofw; err = request_ihex_firmware(&firmware_fw, "emi26/firmware.fw", &dev->dev); if (err) { nofw: dev_err(&dev->dev, "%s - request_firmware() failed\n", __func__); goto wraperr; } /* Assert reset (stop the CPU in the EMI) */ err = emi26_set_reset(dev,1); if (err < 0) goto wraperr; rec = (const struct ihex_binrec *)loader_fw->data; /* 1. We need to put the loader for the FPGA into the EZ-USB */ while (rec) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_INTERNAL); if (err < 0) goto wraperr; rec = ihex_next_binrec(rec); } /* De-assert reset (let the CPU run) */ err = emi26_set_reset(dev,0); if (err < 0) goto wraperr; msleep(250); /* let device settle */ /* 2. We upload the FPGA firmware into the EMI * Note: collect up to 1023 (yes!) bytes and send them with * a single request. This is _much_ faster! */ rec = (const struct ihex_binrec *)bitstream_fw->data; do { i = 0; addr = be32_to_cpu(rec->addr); /* intel hex records are terminated with type 0 element */ while (rec && (i + be16_to_cpu(rec->len) < FW_LOAD_SIZE)) { memcpy(buf + i, rec->data, be16_to_cpu(rec->len)); i += be16_to_cpu(rec->len); rec = ihex_next_binrec(rec); } err = emi26_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA); if (err < 0) goto wraperr; } while (rec); /* Assert reset (stop the CPU in the EMI) */ err = emi26_set_reset(dev,1); if (err < 0) goto wraperr; /* 3. We need to put the loader for the firmware into the EZ-USB (again...) */ for (rec = (const struct ihex_binrec *)loader_fw->data; rec; rec = ihex_next_binrec(rec)) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_INTERNAL); if (err < 0) goto wraperr; } msleep(250); /* let device settle */ /* De-assert reset (let the CPU run) */ err = emi26_set_reset(dev,0); if (err < 0) goto wraperr; /* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */ for (rec = (const struct ihex_binrec *)firmware_fw->data; rec; rec = ihex_next_binrec(rec)) { if (!INTERNAL_RAM(be32_to_cpu(rec->addr))) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_EXTERNAL); if (err < 0) goto wraperr; } } /* Assert reset (stop the CPU in the EMI) */ err = emi26_set_reset(dev,1); if (err < 0) goto wraperr; for (rec = (const struct ihex_binrec *)firmware_fw->data; rec; rec = ihex_next_binrec(rec)) { if (INTERNAL_RAM(be32_to_cpu(rec->addr))) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_INTERNAL); if (err < 0) goto wraperr; } } /* De-assert reset (let the CPU run) */ err = emi26_set_reset(dev,0); if (err < 0) goto wraperr; msleep(250); /* let device settle */ /* return 1 to fail the driver inialization * and give real driver change to load */ err = 1; wraperr: if (err < 0) dev_err(&dev->dev,"%s - error loading firmware: error = %d\n", __func__, err); release_firmware(loader_fw); release_firmware(bitstream_fw); release_firmware(firmware_fw); kfree(buf); return err; } static const struct usb_device_id id_table[] = { { USB_DEVICE(EMI26_VENDOR_ID, EMI26_PRODUCT_ID) }, { USB_DEVICE(EMI26_VENDOR_ID, EMI26B_PRODUCT_ID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, id_table); static int emi26_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(intf); dev_info(&intf->dev, "%s start\n", __func__); emi26_load_firmware(dev); /* do not return the driver context, let real audio driver do that */ return -EIO; } static void emi26_disconnect(struct usb_interface *intf) { } static struct usb_driver emi26_driver = { .name = "emi26 - firmware loader", .probe = emi26_probe, .disconnect = emi26_disconnect, .id_table = id_table, }; module_usb_driver(emi26_driver); MODULE_AUTHOR("Tapio Laxström"); MODULE_DESCRIPTION("Emagic EMI 2|6 firmware loader."); MODULE_LICENSE("GPL"); MODULE_FIRMWARE("emi26/loader.fw"); MODULE_FIRMWARE("emi26/bitstream.fw"); MODULE_FIRMWARE("emi26/firmware.fw"); /* vi:ai:syntax=c:sw=8:ts=8:tw=80 */ |
| 1 1 1 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 | // SPDX-License-Identifier: GPL-2.0-or-later /* * kinect sensor device camera, gspca driver * * Copyright (C) 2011 Antonio Ospite <ospite@studenti.unina.it> * * Based on the OpenKinect project and libfreenect * http://openkinect.org/wiki/Init_Analysis * * Special thanks to Steven Toth and kernellabs.com for sponsoring a Kinect * sensor device which I tested the driver on. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "kinect" #include "gspca.h" #define CTRL_TIMEOUT 500 MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>"); MODULE_DESCRIPTION("GSPCA/Kinect Sensor Device USB Camera Driver"); MODULE_LICENSE("GPL"); static bool depth_mode; struct pkt_hdr { uint8_t magic[2]; uint8_t pad; uint8_t flag; uint8_t unk1; uint8_t seq; uint8_t unk2; uint8_t unk3; uint32_t timestamp; }; struct cam_hdr { uint8_t magic[2]; __le16 len; __le16 cmd; __le16 tag; }; /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ uint16_t cam_tag; /* a sequence number for packets */ uint8_t stream_flag; /* to identify different stream types */ uint8_t obuf[0x400]; /* output buffer for control commands */ uint8_t ibuf[0x200]; /* input buffer for control commands */ }; #define MODE_640x480 0x0001 #define MODE_640x488 0x0002 #define MODE_1280x1024 0x0004 #define FORMAT_BAYER 0x0010 #define FORMAT_UYVY 0x0020 #define FORMAT_Y10B 0x0040 #define FPS_HIGH 0x0100 static const struct v4l2_pix_format depth_camera_mode[] = { {640, 480, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE, .bytesperline = 640 * 10 / 8, .sizeimage = 640 * 480 * 10 / 8, .colorspace = V4L2_COLORSPACE_SRGB, .priv = MODE_640x488 | FORMAT_Y10B}, }; static const struct v4l2_pix_format video_camera_mode[] = { {640, 480, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480, .colorspace = V4L2_COLORSPACE_SRGB, .priv = MODE_640x480 | FORMAT_BAYER | FPS_HIGH}, {640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, .bytesperline = 640 * 2, .sizeimage = 640 * 480 * 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = MODE_640x480 | FORMAT_UYVY}, {1280, 1024, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE, .bytesperline = 1280, .sizeimage = 1280 * 1024, .colorspace = V4L2_COLORSPACE_SRGB, .priv = MODE_1280x1024 | FORMAT_BAYER}, {640, 488, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE, .bytesperline = 640 * 10 / 8, .sizeimage = 640 * 488 * 10 / 8, .colorspace = V4L2_COLORSPACE_SRGB, .priv = MODE_640x488 | FORMAT_Y10B | FPS_HIGH}, {1280, 1024, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE, .bytesperline = 1280 * 10 / 8, .sizeimage = 1280 * 1024 * 10 / 8, .colorspace = V4L2_COLORSPACE_SRGB, .priv = MODE_1280x1024 | FORMAT_Y10B}, }; static int kinect_write(struct usb_device *udev, uint8_t *data, uint16_t wLength) { return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, data, wLength, CTRL_TIMEOUT); } static int kinect_read(struct usb_device *udev, uint8_t *data, uint16_t wLength) { return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, data, wLength, CTRL_TIMEOUT); } static int send_cmd(struct gspca_dev *gspca_dev, uint16_t cmd, void *cmdbuf, unsigned int cmd_len, void *replybuf, unsigned int reply_len) { struct sd *sd = (struct sd *) gspca_dev; struct usb_device *udev = gspca_dev->dev; int res, actual_len; uint8_t *obuf = sd->obuf; uint8_t *ibuf = sd->ibuf; struct cam_hdr *chdr = (void *)obuf; struct cam_hdr *rhdr = (void *)ibuf; if (cmd_len & 1 || cmd_len > (0x400 - sizeof(*chdr))) { pr_err("send_cmd: Invalid command length (0x%x)\n", cmd_len); return -1; } chdr->magic[0] = 0x47; chdr->magic[1] = 0x4d; chdr->cmd = cpu_to_le16(cmd); chdr->tag = cpu_to_le16(sd->cam_tag); chdr->len = cpu_to_le16(cmd_len / 2); memcpy(obuf+sizeof(*chdr), cmdbuf, cmd_len); res = kinect_write(udev, obuf, cmd_len + sizeof(*chdr)); gspca_dbg(gspca_dev, D_USBO, "Control cmd=%04x tag=%04x len=%04x: %d\n", cmd, sd->cam_tag, cmd_len, res); if (res < 0) { pr_err("send_cmd: Output control transfer failed (%d)\n", res); return res; } do { actual_len = kinect_read(udev, ibuf, 0x200); } while (actual_len == 0); gspca_dbg(gspca_dev, D_USBO, "Control reply: %d\n", actual_len); if (actual_len < (int)sizeof(*rhdr)) { pr_err("send_cmd: Input control transfer failed (%d)\n", actual_len); return actual_len < 0 ? actual_len : -EREMOTEIO; } actual_len -= sizeof(*rhdr); if (rhdr->magic[0] != 0x52 || rhdr->magic[1] != 0x42) { pr_err("send_cmd: Bad magic %02x %02x\n", rhdr->magic[0], rhdr->magic[1]); return -1; } if (rhdr->cmd != chdr->cmd) { pr_err("send_cmd: Bad cmd %02x != %02x\n", rhdr->cmd, chdr->cmd); return -1; } if (rhdr->tag != chdr->tag) { pr_err("send_cmd: Bad tag %04x != %04x\n", rhdr->tag, chdr->tag); return -1; } if (le16_to_cpu(rhdr->len) != (actual_len/2)) { pr_err("send_cmd: Bad len %04x != %04x\n", le16_to_cpu(rhdr->len), (int)(actual_len/2)); return -1; } if (actual_len > reply_len) { pr_warn("send_cmd: Data buffer is %d bytes long, but got %d bytes\n", reply_len, actual_len); memcpy(replybuf, ibuf+sizeof(*rhdr), reply_len); } else { memcpy(replybuf, ibuf+sizeof(*rhdr), actual_len); } sd->cam_tag++; return actual_len; } static int write_register(struct gspca_dev *gspca_dev, uint16_t reg, uint16_t data) { uint16_t reply[2]; __le16 cmd[2]; int res; cmd[0] = cpu_to_le16(reg); cmd[1] = cpu_to_le16(data); gspca_dbg(gspca_dev, D_USBO, "Write Reg 0x%04x <= 0x%02x\n", reg, data); res = send_cmd(gspca_dev, 0x03, cmd, 4, reply, 4); if (res < 0) return res; if (res != 2) { pr_warn("send_cmd returned %d [%04x %04x], 0000 expected\n", res, reply[0], reply[1]); } return 0; } /* this function is called at probe time */ static int sd_config_video(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; sd->cam_tag = 0; sd->stream_flag = 0x80; cam = &gspca_dev->cam; cam->cam_mode = video_camera_mode; cam->nmodes = ARRAY_SIZE(video_camera_mode); gspca_dev->xfer_ep = 0x81; #if 0 /* Setting those values is not needed for video stream */ cam->npkt = 15; gspca_dev->pkt_size = 960 * 2; #endif return 0; } static int sd_config_depth(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; sd->cam_tag = 0; sd->stream_flag = 0x70; cam = &gspca_dev->cam; cam->cam_mode = depth_camera_mode; cam->nmodes = ARRAY_SIZE(depth_camera_mode); gspca_dev->xfer_ep = 0x82; return 0; } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { gspca_dbg(gspca_dev, D_PROBE, "Kinect Camera device.\n"); return 0; } static int sd_start_video(struct gspca_dev *gspca_dev) { int mode; uint8_t fmt_reg, fmt_val; uint8_t res_reg, res_val; uint8_t fps_reg, fps_val; uint8_t mode_val; mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; if (mode & FORMAT_Y10B) { fmt_reg = 0x19; res_reg = 0x1a; fps_reg = 0x1b; mode_val = 0x03; } else { fmt_reg = 0x0c; res_reg = 0x0d; fps_reg = 0x0e; mode_val = 0x01; } /* format */ if (mode & FORMAT_UYVY) fmt_val = 0x05; else fmt_val = 0x00; if (mode & MODE_1280x1024) res_val = 0x02; else res_val = 0x01; if (mode & FPS_HIGH) fps_val = 0x1e; else fps_val = 0x0f; /* turn off IR-reset function */ write_register(gspca_dev, 0x105, 0x00); /* Reset video stream */ write_register(gspca_dev, 0x05, 0x00); /* Due to some ridiculous condition in the firmware, we have to start * and stop the depth stream before the camera will hand us 1280x1024 * IR. This is a stupid workaround, but we've yet to find a better * solution. * * Thanks to Drew Fisher for figuring this out. */ if (mode & (FORMAT_Y10B | MODE_1280x1024)) { write_register(gspca_dev, 0x13, 0x01); write_register(gspca_dev, 0x14, 0x1e); write_register(gspca_dev, 0x06, 0x02); write_register(gspca_dev, 0x06, 0x00); } write_register(gspca_dev, fmt_reg, fmt_val); write_register(gspca_dev, res_reg, res_val); write_register(gspca_dev, fps_reg, fps_val); /* Start video stream */ write_register(gspca_dev, 0x05, mode_val); /* disable Hflip */ write_register(gspca_dev, 0x47, 0x00); return 0; } static int sd_start_depth(struct gspca_dev *gspca_dev) { /* turn off IR-reset function */ write_register(gspca_dev, 0x105, 0x00); /* reset depth stream */ write_register(gspca_dev, 0x06, 0x00); /* Depth Stream Format 0x03: 11 bit stream | 0x02: 10 bit */ write_register(gspca_dev, 0x12, 0x02); /* Depth Stream Resolution 1: standard (640x480) */ write_register(gspca_dev, 0x13, 0x01); /* Depth Framerate / 0x1e (30): 30 fps */ write_register(gspca_dev, 0x14, 0x1e); /* Depth Stream Control / 2: Open Depth Stream */ write_register(gspca_dev, 0x06, 0x02); /* disable depth hflip / LSB = 0: Smoothing Disabled */ write_register(gspca_dev, 0x17, 0x00); return 0; } static void sd_stopN_video(struct gspca_dev *gspca_dev) { /* reset video stream */ write_register(gspca_dev, 0x05, 0x00); } static void sd_stopN_depth(struct gspca_dev *gspca_dev) { /* reset depth stream */ write_register(gspca_dev, 0x06, 0x00); } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *__data, int len) { struct sd *sd = (struct sd *) gspca_dev; struct pkt_hdr *hdr = (void *)__data; uint8_t *data = __data + sizeof(*hdr); int datalen = len - sizeof(*hdr); uint8_t sof = sd->stream_flag | 1; uint8_t mof = sd->stream_flag | 2; uint8_t eof = sd->stream_flag | 5; if (len < 12) return; if (hdr->magic[0] != 'R' || hdr->magic[1] != 'B') { pr_warn("[Stream %02x] Invalid magic %02x%02x\n", sd->stream_flag, hdr->magic[0], hdr->magic[1]); return; } if (hdr->flag == sof) gspca_frame_add(gspca_dev, FIRST_PACKET, data, datalen); else if (hdr->flag == mof) gspca_frame_add(gspca_dev, INTER_PACKET, data, datalen); else if (hdr->flag == eof) gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen); else pr_warn("Packet type not recognized...\n"); } /* sub-driver description */ static const struct sd_desc sd_desc_video = { .name = MODULE_NAME, .config = sd_config_video, .init = sd_init, .start = sd_start_video, .stopN = sd_stopN_video, .pkt_scan = sd_pkt_scan, /* .get_streamparm = sd_get_streamparm, .set_streamparm = sd_set_streamparm, */ }; static const struct sd_desc sd_desc_depth = { .name = MODULE_NAME, .config = sd_config_depth, .init = sd_init, .start = sd_start_depth, .stopN = sd_stopN_depth, .pkt_scan = sd_pkt_scan, /* .get_streamparm = sd_get_streamparm, .set_streamparm = sd_set_streamparm, */ }; /* -- module initialisation -- */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x045e, 0x02ae)}, {USB_DEVICE(0x045e, 0x02bf)}, {} }; MODULE_DEVICE_TABLE(usb, device_table); /* -- device connect -- */ static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id) { if (depth_mode) return gspca_dev_probe(intf, id, &sd_desc_depth, sizeof(struct sd), THIS_MODULE); else return gspca_dev_probe(intf, id, &sd_desc_video, sizeof(struct sd), THIS_MODULE); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = device_table, .probe = sd_probe, .disconnect = gspca_disconnect, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, .reset_resume = gspca_resume, #endif }; module_usb_driver(sd_driver); module_param(depth_mode, bool, 0644); MODULE_PARM_DESC(depth_mode, "0=video 1=depth"); |
| 29 29 29 29 1 2 148 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __NET_GENERIC_NETLINK_H #define __NET_GENERIC_NETLINK_H #include <linux/net.h> #include <net/netlink.h> #include <net/net_namespace.h> #include <uapi/linux/genetlink.h> #define GENLMSG_DEFAULT_SIZE (NLMSG_DEFAULT_SIZE - GENL_HDRLEN) /* Non-parallel generic netlink requests are serialized by a global lock. */ void genl_lock(void); void genl_unlock(void); #define MODULE_ALIAS_GENL_FAMILY(family) \ MODULE_ALIAS_NET_PF_PROTO_NAME(PF_NETLINK, NETLINK_GENERIC, "-family-" family) /* Binding to multicast group requires %CAP_NET_ADMIN */ #define GENL_MCAST_CAP_NET_ADMIN BIT(0) /* Binding to multicast group requires %CAP_SYS_ADMIN */ #define GENL_MCAST_CAP_SYS_ADMIN BIT(1) /** * struct genl_multicast_group - generic netlink multicast group * @name: name of the multicast group, names are per-family * @flags: GENL_MCAST_* flags */ struct genl_multicast_group { char name[GENL_NAMSIZ]; u8 flags; }; struct genl_split_ops; struct genl_info; /** * struct genl_family - generic netlink family * @hdrsize: length of user specific header in bytes * @name: name of family * @version: protocol version * @maxattr: maximum number of attributes supported * @policy: netlink policy * @netnsok: set to true if the family can handle network * namespaces and should be presented in all of them * @parallel_ops: operations can be called in parallel and aren't * synchronized by the core genetlink code * @pre_doit: called before an operation's doit callback, it may * do additional, common, filtering and return an error * @post_doit: called after an operation's doit callback, it may * undo operations done by pre_doit, for example release locks * @bind: called when family multicast group is added to a netlink socket * @unbind: called when family multicast group is removed from a netlink socket * @module: pointer to the owning module (set to THIS_MODULE) * @mcgrps: multicast groups used by this family * @n_mcgrps: number of multicast groups * @resv_start_op: first operation for which reserved fields of the header * can be validated and policies are required (see below); * new families should leave this field at zero * @ops: the operations supported by this family * @n_ops: number of operations supported by this family * @small_ops: the small-struct operations supported by this family * @n_small_ops: number of small-struct operations supported by this family * @split_ops: the split do/dump form of operation definition * @n_split_ops: number of entries in @split_ops, note that with split do/dump * ops the number of entries is not the same as number of commands * @sock_priv_size: the size of per-socket private memory * @sock_priv_init: the per-socket private memory initializer * @sock_priv_destroy: the per-socket private memory destructor * * Attribute policies (the combination of @policy and @maxattr fields) * can be attached at the family level or at the operation level. * If both are present the per-operation policy takes precedence. * For operations before @resv_start_op lack of policy means that the core * will perform no attribute parsing or validation. For newer operations * if policy is not provided core will reject all TLV attributes. */ struct genl_family { unsigned int hdrsize; char name[GENL_NAMSIZ]; unsigned int version; unsigned int maxattr; u8 netnsok:1; u8 parallel_ops:1; u8 n_ops; u8 n_small_ops; u8 n_split_ops; u8 n_mcgrps; u8 resv_start_op; const struct nla_policy *policy; int (*pre_doit)(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); void (*post_doit)(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); int (*bind)(int mcgrp); void (*unbind)(int mcgrp); const struct genl_ops * ops; const struct genl_small_ops *small_ops; const struct genl_split_ops *split_ops; const struct genl_multicast_group *mcgrps; struct module *module; size_t sock_priv_size; void (*sock_priv_init)(void *priv); void (*sock_priv_destroy)(void *priv); /* private: internal use only */ /* protocol family identifier */ int id; /* starting number of multicast group IDs in this family */ unsigned int mcgrp_offset; /* list of per-socket privs */ struct xarray *sock_privs; }; /** * struct genl_info - receiving information * @snd_seq: sending sequence number * @snd_portid: netlink portid of sender * @family: generic netlink family * @nlhdr: netlink message header * @genlhdr: generic netlink message header * @attrs: netlink attributes * @_net: network namespace * @ctx: storage space for the use by the family * @user_ptr: user pointers (deprecated, use ctx instead) * @extack: extended ACK report struct */ struct genl_info { u32 snd_seq; u32 snd_portid; const struct genl_family *family; const struct nlmsghdr * nlhdr; struct genlmsghdr * genlhdr; struct nlattr ** attrs; possible_net_t _net; union { u8 ctx[NETLINK_CTX_SIZE]; void * user_ptr[2]; }; struct netlink_ext_ack *extack; }; static inline struct net *genl_info_net(const struct genl_info *info) { return read_pnet(&info->_net); } static inline void genl_info_net_set(struct genl_info *info, struct net *net) { write_pnet(&info->_net, net); } static inline void *genl_info_userhdr(const struct genl_info *info) { return (u8 *)info->genlhdr + GENL_HDRLEN; } #define GENL_SET_ERR_MSG(info, msg) NL_SET_ERR_MSG((info)->extack, msg) #define GENL_SET_ERR_MSG_FMT(info, msg, args...) \ NL_SET_ERR_MSG_FMT((info)->extack, msg, ##args) /* Report that a root attribute is missing */ #define GENL_REQ_ATTR_CHECK(info, attr) ({ \ const struct genl_info *__info = (info); \ \ NL_REQ_ATTR_CHECK(__info->extack, NULL, __info->attrs, (attr)); \ }) enum genl_validate_flags { GENL_DONT_VALIDATE_STRICT = BIT(0), GENL_DONT_VALIDATE_DUMP = BIT(1), GENL_DONT_VALIDATE_DUMP_STRICT = BIT(2), }; /** * struct genl_small_ops - generic netlink operations (small version) * @cmd: command identifier * @internal_flags: flags used by the family * @flags: GENL_* flags (%GENL_ADMIN_PERM or %GENL_UNS_ADMIN_PERM) * @validate: validation flags from enum genl_validate_flags * @doit: standard command callback * @dumpit: callback for dumpers * * This is a cut-down version of struct genl_ops for users who don't need * most of the ancillary infra and want to save space. */ struct genl_small_ops { int (*doit)(struct sk_buff *skb, struct genl_info *info); int (*dumpit)(struct sk_buff *skb, struct netlink_callback *cb); u8 cmd; u8 internal_flags; u8 flags; u8 validate; }; /** * struct genl_ops - generic netlink operations * @cmd: command identifier * @internal_flags: flags used by the family * @flags: GENL_* flags (%GENL_ADMIN_PERM or %GENL_UNS_ADMIN_PERM) * @maxattr: maximum number of attributes supported * @policy: netlink policy (takes precedence over family policy) * @validate: validation flags from enum genl_validate_flags * @doit: standard command callback * @start: start callback for dumps * @dumpit: callback for dumpers * @done: completion callback for dumps */ struct genl_ops { int (*doit)(struct sk_buff *skb, struct genl_info *info); int (*start)(struct netlink_callback *cb); int (*dumpit)(struct sk_buff *skb, struct netlink_callback *cb); int (*done)(struct netlink_callback *cb); const struct nla_policy *policy; unsigned int maxattr; u8 cmd; u8 internal_flags; u8 flags; u8 validate; }; /** * struct genl_split_ops - generic netlink operations (do/dump split version) * @cmd: command identifier * @internal_flags: flags used by the family * @flags: GENL_* flags (%GENL_ADMIN_PERM or %GENL_UNS_ADMIN_PERM) * @validate: validation flags from enum genl_validate_flags * @policy: netlink policy (takes precedence over family policy) * @maxattr: maximum number of attributes supported * * Do callbacks: * @pre_doit: called before an operation's @doit callback, it may * do additional, common, filtering and return an error * @doit: standard command callback * @post_doit: called after an operation's @doit callback, it may * undo operations done by pre_doit, for example release locks * * Dump callbacks: * @start: start callback for dumps * @dumpit: callback for dumpers * @done: completion callback for dumps * * Do callbacks can be used if %GENL_CMD_CAP_DO is set in @flags. * Dump callbacks can be used if %GENL_CMD_CAP_DUMP is set in @flags. * Exactly one of those flags must be set. */ struct genl_split_ops { union { struct { int (*pre_doit)(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); int (*doit)(struct sk_buff *skb, struct genl_info *info); void (*post_doit)(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); }; struct { int (*start)(struct netlink_callback *cb); int (*dumpit)(struct sk_buff *skb, struct netlink_callback *cb); int (*done)(struct netlink_callback *cb); }; }; const struct nla_policy *policy; unsigned int maxattr; u8 cmd; u8 internal_flags; u8 flags; u8 validate; }; /** * struct genl_dumpit_info - info that is available during dumpit op call * @op: generic netlink ops - for internal genl code usage * @attrs: netlink attributes * @info: struct genl_info describing the request */ struct genl_dumpit_info { struct genl_split_ops op; struct genl_info info; }; static inline const struct genl_dumpit_info * genl_dumpit_info(struct netlink_callback *cb) { return cb->data; } static inline const struct genl_info * genl_info_dump(struct netlink_callback *cb) { return &genl_dumpit_info(cb)->info; } /** * genl_info_init_ntf() - initialize genl_info for notifications * @info: genl_info struct to set up * @family: pointer to the genetlink family * @cmd: command to be used in the notification * * Initialize a locally declared struct genl_info to pass to various APIs. * Intended to be used when creating notifications. */ static inline void genl_info_init_ntf(struct genl_info *info, const struct genl_family *family, u8 cmd) { struct genlmsghdr *hdr = (void *) &info->user_ptr[0]; memset(info, 0, sizeof(*info)); info->family = family; info->genlhdr = hdr; hdr->cmd = cmd; } static inline bool genl_info_is_ntf(const struct genl_info *info) { return !info->nlhdr; } void *__genl_sk_priv_get(struct genl_family *family, struct sock *sk); void *genl_sk_priv_get(struct genl_family *family, struct sock *sk); int genl_register_family(struct genl_family *family); int genl_unregister_family(const struct genl_family *family); void genl_notify(const struct genl_family *family, struct sk_buff *skb, struct genl_info *info, u32 group, gfp_t flags); void *genlmsg_put(struct sk_buff *skb, u32 portid, u32 seq, const struct genl_family *family, int flags, u8 cmd); static inline void * __genlmsg_iput(struct sk_buff *skb, const struct genl_info *info, int flags) { return genlmsg_put(skb, info->snd_portid, info->snd_seq, info->family, flags, info->genlhdr->cmd); } /** * genlmsg_iput - start genetlink message based on genl_info * @skb: skb in which message header will be placed * @info: genl_info as provided to do/dump handlers * * Convenience wrapper which starts a genetlink message based on * information in user request. @info should be either the struct passed * by genetlink core to do/dump handlers (when constructing replies to * such requests) or a struct initialized by genl_info_init_ntf() * when constructing notifications. * * Returns: pointer to new genetlink header. */ static inline void * genlmsg_iput(struct sk_buff *skb, const struct genl_info *info) { return __genlmsg_iput(skb, info, 0); } /** * genlmsg_nlhdr - Obtain netlink header from user specified header * @user_hdr: user header as returned from genlmsg_put() * * Returns: pointer to netlink header. */ static inline struct nlmsghdr *genlmsg_nlhdr(void *user_hdr) { return (struct nlmsghdr *)((char *)user_hdr - GENL_HDRLEN - NLMSG_HDRLEN); } /** * genlmsg_parse_deprecated - parse attributes of a genetlink message * @nlh: netlink message header * @family: genetlink message family * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct */ static inline int genlmsg_parse_deprecated(const struct nlmsghdr *nlh, const struct genl_family *family, struct nlattr *tb[], int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype, policy, NL_VALIDATE_LIBERAL, extack); } /** * genlmsg_parse - parse attributes of a genetlink message * @nlh: netlink message header * @family: genetlink message family * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected * @policy: validation policy * @extack: extended ACK report struct */ static inline int genlmsg_parse(const struct nlmsghdr *nlh, const struct genl_family *family, struct nlattr *tb[], int maxtype, const struct nla_policy *policy, struct netlink_ext_ack *extack) { return __nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype, policy, NL_VALIDATE_STRICT, extack); } /** * genl_dump_check_consistent - check if sequence is consistent and advertise if not * @cb: netlink callback structure that stores the sequence number * @user_hdr: user header as returned from genlmsg_put() * * Cf. nl_dump_check_consistent(), this just provides a wrapper to make it * simpler to use with generic netlink. */ static inline void genl_dump_check_consistent(struct netlink_callback *cb, void *user_hdr) { nl_dump_check_consistent(cb, genlmsg_nlhdr(user_hdr)); } /** * genlmsg_put_reply - Add generic netlink header to a reply message * @skb: socket buffer holding the message * @info: receiver info * @family: generic netlink family * @flags: netlink message flags * @cmd: generic netlink command * * Returns: pointer to user specific header */ static inline void *genlmsg_put_reply(struct sk_buff *skb, struct genl_info *info, const struct genl_family *family, int flags, u8 cmd) { return genlmsg_put(skb, info->snd_portid, info->snd_seq, family, flags, cmd); } /** * genlmsg_end - Finalize a generic netlink message * @skb: socket buffer the message is stored in * @hdr: user specific header */ static inline void genlmsg_end(struct sk_buff *skb, void *hdr) { nlmsg_end(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN); } /** * genlmsg_cancel - Cancel construction of a generic netlink message * @skb: socket buffer the message is stored in * @hdr: generic netlink message header */ static inline void genlmsg_cancel(struct sk_buff *skb, void *hdr) { if (hdr) nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN); } /** * genlmsg_multicast_netns_filtered - multicast a netlink message * to a specific netns with filter * function * @family: the generic netlink family * @net: the net namespace * @skb: netlink message as socket buffer * @portid: own netlink portid to avoid sending to yourself * @group: offset of multicast group in groups array * @flags: allocation flags * @filter: filter function * @filter_data: filter function private data * * Return: 0 on success, negative error code for failure. */ static inline int genlmsg_multicast_netns_filtered(const struct genl_family *family, struct net *net, struct sk_buff *skb, u32 portid, unsigned int group, gfp_t flags, netlink_filter_fn filter, void *filter_data) { if (WARN_ON_ONCE(group >= family->n_mcgrps)) return -EINVAL; group = family->mcgrp_offset + group; return nlmsg_multicast_filtered(net->genl_sock, skb, portid, group, flags, filter, filter_data); } /** * genlmsg_multicast_netns - multicast a netlink message to a specific netns * @family: the generic netlink family * @net: the net namespace * @skb: netlink message as socket buffer * @portid: own netlink portid to avoid sending to yourself * @group: offset of multicast group in groups array * @flags: allocation flags */ static inline int genlmsg_multicast_netns(const struct genl_family *family, struct net *net, struct sk_buff *skb, u32 portid, unsigned int group, gfp_t flags) { return genlmsg_multicast_netns_filtered(family, net, skb, portid, group, flags, NULL, NULL); } /** * genlmsg_multicast - multicast a netlink message to the default netns * @family: the generic netlink family * @skb: netlink message as socket buffer * @portid: own netlink portid to avoid sending to yourself * @group: offset of multicast group in groups array * @flags: allocation flags */ static inline int genlmsg_multicast(const struct genl_family *family, struct sk_buff *skb, u32 portid, unsigned int group, gfp_t flags) { return genlmsg_multicast_netns(family, &init_net, skb, portid, group, flags); } /** * genlmsg_multicast_allns - multicast a netlink message to all net namespaces * @family: the generic netlink family * @skb: netlink message as socket buffer * @portid: own netlink portid to avoid sending to yourself * @group: offset of multicast group in groups array * * This function must hold the RTNL or rcu_read_lock(). */ int genlmsg_multicast_allns(const struct genl_family *family, struct sk_buff *skb, u32 portid, unsigned int group); /** * genlmsg_unicast - unicast a netlink message * @net: network namespace to look up @portid in * @skb: netlink message as socket buffer * @portid: netlink portid of the destination socket */ static inline int genlmsg_unicast(struct net *net, struct sk_buff *skb, u32 portid) { return nlmsg_unicast(net->genl_sock, skb, portid); } /** * genlmsg_reply - reply to a request * @skb: netlink message to be sent back * @info: receiver information */ static inline int genlmsg_reply(struct sk_buff *skb, struct genl_info *info) { return genlmsg_unicast(genl_info_net(info), skb, info->snd_portid); } /** * genlmsg_data - head of message payload * @gnlh: genetlink message header */ static inline void *genlmsg_data(const struct genlmsghdr *gnlh) { return ((unsigned char *) gnlh + GENL_HDRLEN); } /** * genlmsg_len - length of message payload * @gnlh: genetlink message header */ static inline int genlmsg_len(const struct genlmsghdr *gnlh) { struct nlmsghdr *nlh = (struct nlmsghdr *)((unsigned char *)gnlh - NLMSG_HDRLEN); return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN); } /** * genlmsg_msg_size - length of genetlink message not including padding * @payload: length of message payload */ static inline int genlmsg_msg_size(int payload) { return GENL_HDRLEN + payload; } /** * genlmsg_total_size - length of genetlink message including padding * @payload: length of message payload */ static inline int genlmsg_total_size(int payload) { return NLMSG_ALIGN(genlmsg_msg_size(payload)); } /** * genlmsg_new - Allocate a new generic netlink message * @payload: size of the message payload * @flags: the type of memory to allocate. */ static inline struct sk_buff *genlmsg_new(size_t payload, gfp_t flags) { return nlmsg_new(genlmsg_total_size(payload), flags); } /** * genl_set_err - report error to genetlink broadcast listeners * @family: the generic netlink family * @net: the network namespace to report the error to * @portid: the PORTID of a process that we want to skip (if any) * @group: the broadcast group that will notice the error * (this is the offset of the multicast group in the groups array) * @code: error code, must be negative (as usual in kernelspace) * * This function returns the number of broadcast listeners that have set the * NETLINK_RECV_NO_ENOBUFS socket option. */ static inline int genl_set_err(const struct genl_family *family, struct net *net, u32 portid, u32 group, int code) { if (WARN_ON_ONCE(group >= family->n_mcgrps)) return -EINVAL; group = family->mcgrp_offset + group; return netlink_set_err(net->genl_sock, portid, group, code); } static inline int genl_has_listeners(const struct genl_family *family, struct net *net, unsigned int group) { if (WARN_ON_ONCE(group >= family->n_mcgrps)) return -EINVAL; group = family->mcgrp_offset + group; return netlink_has_listeners(net->genl_sock, group); } #endif /* __NET_GENERIC_NETLINK_H */ |
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struct i2c_adapter *adapter; }; struct gsb_buffer { u8 status; u8 len; union { u16 wdata; u8 bdata; DECLARE_FLEX_ARRAY(u8, data); }; } __packed; struct i2c_acpi_lookup { struct i2c_board_info *info; acpi_handle adapter_handle; acpi_handle device_handle; acpi_handle search_handle; int n; int index; u32 speed; u32 min_speed; u32 force_speed; }; /** * i2c_acpi_get_i2c_resource - Gets I2cSerialBus resource if type matches * @ares: ACPI resource * @i2c: Pointer to I2cSerialBus resource will be returned here * * Checks if the given ACPI resource is of type I2cSerialBus. * In this case, returns a pointer to it to the caller. * * Returns true if resource type is of I2cSerialBus, otherwise false. */ bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares, struct acpi_resource_i2c_serialbus **i2c) { struct acpi_resource_i2c_serialbus *sb; if (ares->type != ACPI_RESOURCE_TYPE_SERIAL_BUS) return false; sb = &ares->data.i2c_serial_bus; if (sb->type != ACPI_RESOURCE_SERIAL_TYPE_I2C) return false; *i2c = sb; return true; } EXPORT_SYMBOL_GPL(i2c_acpi_get_i2c_resource); static int i2c_acpi_resource_count(struct acpi_resource *ares, void *data) { struct acpi_resource_i2c_serialbus *sb; int *count = data; if (i2c_acpi_get_i2c_resource(ares, &sb)) *count = *count + 1; return 1; } /** * i2c_acpi_client_count - Count the number of I2cSerialBus resources * @adev: ACPI device * * Returns the number of I2cSerialBus resources in the ACPI-device's * resource-list; or a negative error code. */ int i2c_acpi_client_count(struct acpi_device *adev) { int ret, count = 0; LIST_HEAD(r); ret = acpi_dev_get_resources(adev, &r, i2c_acpi_resource_count, &count); if (ret < 0) return ret; acpi_dev_free_resource_list(&r); return count; } EXPORT_SYMBOL_GPL(i2c_acpi_client_count); static int i2c_acpi_fill_info(struct acpi_resource *ares, void *data) { struct i2c_acpi_lookup *lookup = data; struct i2c_board_info *info = lookup->info; struct acpi_resource_i2c_serialbus *sb; acpi_status status; if (info->addr || !i2c_acpi_get_i2c_resource(ares, &sb)) return 1; if (lookup->index != -1 && lookup->n++ != lookup->index) return 1; status = acpi_get_handle(lookup->device_handle, sb->resource_source.string_ptr, &lookup->adapter_handle); if (ACPI_FAILURE(status)) return 1; info->addr = sb->slave_address; lookup->speed = sb->connection_speed; if (sb->access_mode == ACPI_I2C_10BIT_MODE) info->flags |= I2C_CLIENT_TEN; return 1; } static const struct acpi_device_id i2c_acpi_ignored_device_ids[] = { /* * ACPI video acpi_devices, which are handled by the acpi-video driver * sometimes contain a SERIAL_TYPE_I2C ACPI resource, ignore these. */ { ACPI_VIDEO_HID, 0 }, {} }; struct i2c_acpi_irq_context { int irq; bool wake_capable; }; static int i2c_acpi_do_lookup(struct acpi_device *adev, struct i2c_acpi_lookup *lookup) { struct i2c_board_info *info = lookup->info; struct list_head resource_list; int ret; if (acpi_bus_get_status(adev)) return -EINVAL; if (!acpi_dev_ready_for_enumeration(adev)) return -ENODEV; if (acpi_match_device_ids(adev, i2c_acpi_ignored_device_ids) == 0) return -ENODEV; memset(info, 0, sizeof(*info)); lookup->device_handle = acpi_device_handle(adev); /* Look up for I2cSerialBus resource */ INIT_LIST_HEAD(&resource_list); ret = acpi_dev_get_resources(adev, &resource_list, i2c_acpi_fill_info, lookup); acpi_dev_free_resource_list(&resource_list); if (ret < 0 || !info->addr) return -EINVAL; return 0; } static int i2c_acpi_add_irq_resource(struct acpi_resource *ares, void *data) { struct i2c_acpi_irq_context *irq_ctx = data; struct resource r; if (irq_ctx->irq > 0) return 1; if (!acpi_dev_resource_interrupt(ares, 0, &r)) return 1; irq_ctx->irq = i2c_dev_irq_from_resources(&r, 1); irq_ctx->wake_capable = r.flags & IORESOURCE_IRQ_WAKECAPABLE; return 1; /* No need to add resource to the list */ } /** * i2c_acpi_get_irq - get device IRQ number from ACPI * @client: Pointer to the I2C client device * @wake_capable: Set to true if the IRQ is wake capable * * Find the IRQ number used by a specific client device. * * Return: The IRQ number or an error code. */ int i2c_acpi_get_irq(struct i2c_client *client, bool *wake_capable) { struct acpi_device *adev = ACPI_COMPANION(&client->dev); struct list_head resource_list; struct i2c_acpi_irq_context irq_ctx = { .irq = -ENOENT, }; int ret; INIT_LIST_HEAD(&resource_list); ret = acpi_dev_get_resources(adev, &resource_list, i2c_acpi_add_irq_resource, &irq_ctx); if (ret < 0) return ret; acpi_dev_free_resource_list(&resource_list); if (irq_ctx.irq == -ENOENT) irq_ctx.irq = acpi_dev_gpio_irq_wake_get(adev, 0, &irq_ctx.wake_capable); if (irq_ctx.irq < 0) return irq_ctx.irq; if (wake_capable) *wake_capable = irq_ctx.wake_capable; return irq_ctx.irq; } static int i2c_acpi_get_info(struct acpi_device *adev, struct i2c_board_info *info, struct i2c_adapter *adapter, acpi_handle *adapter_handle) { struct i2c_acpi_lookup lookup; int ret; memset(&lookup, 0, sizeof(lookup)); lookup.info = info; lookup.index = -1; if (acpi_device_enumerated(adev)) return -EINVAL; ret = i2c_acpi_do_lookup(adev, &lookup); if (ret) return ret; if (adapter) { /* The adapter must match the one in I2cSerialBus() connector */ if (!device_match_acpi_handle(&adapter->dev, lookup.adapter_handle)) return -ENODEV; } else { struct acpi_device *adapter_adev; /* The adapter must be present */ adapter_adev = acpi_fetch_acpi_dev(lookup.adapter_handle); if (!adapter_adev) return -ENODEV; if (acpi_bus_get_status(adapter_adev) || !adapter_adev->status.present) return -ENODEV; } info->fwnode = acpi_fwnode_handle(adev); if (adapter_handle) *adapter_handle = lookup.adapter_handle; acpi_set_modalias(adev, dev_name(&adev->dev), info->type, sizeof(info->type)); return 0; } static void i2c_acpi_register_device(struct i2c_adapter *adapter, struct acpi_device *adev, struct i2c_board_info *info) { /* * Skip registration on boards where the ACPI tables are * known to contain bogus I2C devices. */ if (acpi_quirk_skip_i2c_client_enumeration(adev)) return; adev->power.flags.ignore_parent = true; acpi_device_set_enumerated(adev); if (IS_ERR(i2c_new_client_device(adapter, info))) adev->power.flags.ignore_parent = false; } static acpi_status i2c_acpi_add_device(acpi_handle handle, u32 level, void *data, void **return_value) { struct i2c_adapter *adapter = data; struct acpi_device *adev = acpi_fetch_acpi_dev(handle); struct i2c_board_info info; if (!adev || i2c_acpi_get_info(adev, &info, adapter, NULL)) return AE_OK; i2c_acpi_register_device(adapter, adev, &info); return AE_OK; } #define I2C_ACPI_MAX_SCAN_DEPTH 32 /** * i2c_acpi_register_devices - enumerate I2C slave devices behind adapter * @adap: pointer to adapter * * Enumerate all I2C slave devices behind this adapter by walking the ACPI * namespace. When a device is found it will be added to the Linux device * model and bound to the corresponding ACPI handle. */ void i2c_acpi_register_devices(struct i2c_adapter *adap) { struct acpi_device *adev; acpi_status status; if (!has_acpi_companion(&adap->dev)) return; status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, I2C_ACPI_MAX_SCAN_DEPTH, i2c_acpi_add_device, NULL, adap, NULL); if (ACPI_FAILURE(status)) dev_warn(&adap->dev, "failed to enumerate I2C slaves\n"); if (!adap->dev.parent) return; adev = ACPI_COMPANION(adap->dev.parent); if (!adev) return; acpi_dev_clear_dependencies(adev); } static const struct acpi_device_id i2c_acpi_force_400khz_device_ids[] = { /* * These Silead touchscreen controllers only work at 400KHz, for * some reason they do not work at 100KHz. On some devices the ACPI * tables list another device at their bus as only being capable * of 100KHz, testing has shown that these other devices work fine * at 400KHz (as can be expected of any recent i2c hw) so we force * the speed of the bus to 400 KHz if a Silead device is present. */ { "MSSL1680", 0 }, {} }; static const struct acpi_device_id i2c_acpi_force_100khz_device_ids[] = { /* * When a 400KHz freq is used on this model of ELAN touchpad in Linux, * excessive smoothing (similar to when the touchpad's firmware detects * a noisy signal) is sometimes applied. As some devices' (e.g, Lenovo * V15 G4) ACPI tables specify a 400KHz frequency for this device and * some I2C busses (e.g, Designware I2C) default to a 400KHz freq, * force the speed to 100KHz as a workaround. * * For future investigation: This problem may be related to the default * HCNT/LCNT values given by some busses' drivers, because they are not * specified in the aforementioned devices' ACPI tables, and because * the device works without issues on Windows at what is expected to be * a 400KHz frequency. The root cause of the issue is not known. */ { "DLL0945", 0 }, { "ELAN06FA", 0 }, {} }; static acpi_status i2c_acpi_lookup_speed(acpi_handle handle, u32 level, void *data, void **return_value) { struct i2c_acpi_lookup *lookup = data; struct acpi_device *adev = acpi_fetch_acpi_dev(handle); if (!adev || i2c_acpi_do_lookup(adev, lookup)) return AE_OK; if (lookup->search_handle != lookup->adapter_handle) return AE_OK; if (lookup->speed <= lookup->min_speed) lookup->min_speed = lookup->speed; if (acpi_match_device_ids(adev, i2c_acpi_force_400khz_device_ids) == 0) lookup->force_speed = I2C_MAX_FAST_MODE_FREQ; if (acpi_match_device_ids(adev, i2c_acpi_force_100khz_device_ids) == 0) lookup->force_speed = I2C_MAX_STANDARD_MODE_FREQ; return AE_OK; } /** * i2c_acpi_find_bus_speed - find I2C bus speed from ACPI * @dev: The device owning the bus * * Find the I2C bus speed by walking the ACPI namespace for all I2C slaves * devices connected to this bus and use the speed of slowest device. * * Returns the speed in Hz or zero */ u32 i2c_acpi_find_bus_speed(struct device *dev) { struct i2c_acpi_lookup lookup; struct i2c_board_info dummy; acpi_status status; if (!has_acpi_companion(dev)) return 0; memset(&lookup, 0, sizeof(lookup)); lookup.search_handle = ACPI_HANDLE(dev); lookup.min_speed = UINT_MAX; lookup.info = &dummy; lookup.index = -1; status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, I2C_ACPI_MAX_SCAN_DEPTH, i2c_acpi_lookup_speed, NULL, &lookup, NULL); if (ACPI_FAILURE(status)) { dev_warn(dev, "unable to find I2C bus speed from ACPI\n"); return 0; } if (lookup.force_speed) { if (lookup.force_speed != lookup.min_speed) dev_warn(dev, FW_BUG "DSDT uses known not-working I2C bus speed %d, forcing it to %d\n", lookup.min_speed, lookup.force_speed); return lookup.force_speed; } else if (lookup.min_speed != UINT_MAX) { return lookup.min_speed; } else { return 0; } } EXPORT_SYMBOL_GPL(i2c_acpi_find_bus_speed); struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) { struct i2c_adapter *adapter; struct device *dev; dev = bus_find_device(&i2c_bus_type, NULL, handle, device_match_acpi_handle); if (!dev) return NULL; adapter = i2c_verify_adapter(dev); if (!adapter) put_device(dev); return adapter; } EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle); static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) { return i2c_find_device_by_fwnode(acpi_fwnode_handle(adev)); } static struct i2c_adapter *i2c_acpi_find_adapter_by_adev(struct acpi_device *adev) { return i2c_find_adapter_by_fwnode(acpi_fwnode_handle(adev)); } static int i2c_acpi_notify(struct notifier_block *nb, unsigned long value, void *arg) { struct acpi_device *adev = arg; struct i2c_board_info info; acpi_handle adapter_handle; struct i2c_adapter *adapter; struct i2c_client *client; switch (value) { case ACPI_RECONFIG_DEVICE_ADD: if (i2c_acpi_get_info(adev, &info, NULL, &adapter_handle)) break; adapter = i2c_acpi_find_adapter_by_handle(adapter_handle); if (!adapter) break; i2c_acpi_register_device(adapter, adev, &info); put_device(&adapter->dev); break; case ACPI_RECONFIG_DEVICE_REMOVE: if (!acpi_device_enumerated(adev)) break; client = i2c_acpi_find_client_by_adev(adev); if (client) { i2c_unregister_device(client); put_device(&client->dev); } adapter = i2c_acpi_find_adapter_by_adev(adev); if (adapter) { acpi_unbind_one(&adapter->dev); put_device(&adapter->dev); } break; } return NOTIFY_OK; } struct notifier_block i2c_acpi_notifier = { .notifier_call = i2c_acpi_notify, }; /** * i2c_acpi_new_device_by_fwnode - Create i2c-client for the Nth I2cSerialBus resource * @fwnode: fwnode with the ACPI resources to get the client from * @index: Index of ACPI resource to get * @info: describes the I2C device; note this is modified (addr gets set) * Context: can sleep * * By default the i2c subsys creates an i2c-client for the first I2cSerialBus * resource of an acpi_device, but some acpi_devices have multiple I2cSerialBus * resources, in that case this function can be used to create an i2c-client * for other I2cSerialBus resources in the Current Resource Settings table. * * Also see i2c_new_client_device, which this function calls to create the * i2c-client. * * Returns a pointer to the new i2c-client, or error pointer in case of failure. * Specifically, -EPROBE_DEFER is returned if the adapter is not found. */ struct i2c_client *i2c_acpi_new_device_by_fwnode(struct fwnode_handle *fwnode, int index, struct i2c_board_info *info) { struct i2c_acpi_lookup lookup; struct i2c_adapter *adapter; struct acpi_device *adev; LIST_HEAD(resource_list); int ret; adev = to_acpi_device_node(fwnode); if (!adev) return ERR_PTR(-ENODEV); memset(&lookup, 0, sizeof(lookup)); lookup.info = info; lookup.device_handle = acpi_device_handle(adev); lookup.index = index; ret = acpi_dev_get_resources(adev, &resource_list, i2c_acpi_fill_info, &lookup); if (ret < 0) return ERR_PTR(ret); acpi_dev_free_resource_list(&resource_list); if (!info->addr) return ERR_PTR(-EADDRNOTAVAIL); adapter = i2c_acpi_find_adapter_by_handle(lookup.adapter_handle); if (!adapter) return ERR_PTR(-EPROBE_DEFER); return i2c_new_client_device(adapter, info); } EXPORT_SYMBOL_GPL(i2c_acpi_new_device_by_fwnode); bool i2c_acpi_waive_d0_probe(struct device *dev) { struct i2c_driver *driver = to_i2c_driver(dev->driver); struct acpi_device *adev = ACPI_COMPANION(dev); return driver->flags & I2C_DRV_ACPI_WAIVE_D0_PROBE && adev && adev->power.state_for_enumeration >= adev->power.state; } EXPORT_SYMBOL_GPL(i2c_acpi_waive_d0_probe); #ifdef CONFIG_ACPI_I2C_OPREGION static int acpi_gsb_i2c_read_bytes(struct i2c_client *client, u8 cmd, u8 *data, u8 data_len) { struct i2c_msg msgs[2]; int ret; u8 *buffer; buffer = kzalloc(data_len, GFP_KERNEL); if (!buffer) return AE_NO_MEMORY; msgs[0].addr = client->addr; msgs[0].flags = client->flags; msgs[0].len = 1; msgs[0].buf = &cmd; msgs[1].addr = client->addr; msgs[1].flags = client->flags | I2C_M_RD; msgs[1].len = data_len; msgs[1].buf = buffer; ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (ret < 0) { /* Getting a NACK is unfortunately normal with some DSTDs */ if (ret == -EREMOTEIO) dev_dbg(&client->adapter->dev, "i2c read %d bytes from client@%#x starting at reg %#x failed, error: %d\n", data_len, client->addr, cmd, ret); else dev_err(&client->adapter->dev, "i2c read %d bytes from client@%#x starting at reg %#x failed, error: %d\n", data_len, client->addr, cmd, ret); /* 2 transfers must have completed successfully */ } else if (ret == 2) { memcpy(data, buffer, data_len); ret = 0; } else { ret = -EIO; } kfree(buffer); return ret; } static int acpi_gsb_i2c_write_bytes(struct i2c_client *client, u8 cmd, u8 *data, u8 data_len) { struct i2c_msg msgs[1]; u8 *buffer; int ret = AE_OK; buffer = kzalloc(data_len + 1, GFP_KERNEL); if (!buffer) return AE_NO_MEMORY; buffer[0] = cmd; memcpy(buffer + 1, data, data_len); msgs[0].addr = client->addr; msgs[0].flags = client->flags; msgs[0].len = data_len + 1; msgs[0].buf = buffer; ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); kfree(buffer); if (ret < 0) { dev_err(&client->adapter->dev, "i2c write failed: %d\n", ret); return ret; } /* 1 transfer must have completed successfully */ return (ret == 1) ? 0 : -EIO; } static acpi_status i2c_acpi_space_handler(u32 function, acpi_physical_address command, u32 bits, u64 *value64, void *handler_context, void *region_context) { struct gsb_buffer *gsb = (struct gsb_buffer *)value64; struct i2c_acpi_handler_data *data = handler_context; struct acpi_connection_info *info = &data->info; struct acpi_resource_i2c_serialbus *sb; struct i2c_adapter *adapter = data->adapter; struct i2c_client *client; struct acpi_resource *ares; u32 accessor_type = function >> 16; u8 action = function & ACPI_IO_MASK; acpi_status ret; int status; ret = acpi_buffer_to_resource(info->connection, info->length, &ares); if (ACPI_FAILURE(ret)) return ret; client = kzalloc(sizeof(*client), GFP_KERNEL); if (!client) { ret = AE_NO_MEMORY; goto err; } if (!value64 || !i2c_acpi_get_i2c_resource(ares, &sb)) { ret = AE_BAD_PARAMETER; goto err; } client->adapter = adapter; client->addr = sb->slave_address; if (sb->access_mode == ACPI_I2C_10BIT_MODE) client->flags |= I2C_CLIENT_TEN; switch (accessor_type) { case ACPI_GSB_ACCESS_ATTRIB_SEND_RCV: if (action == ACPI_READ) { status = i2c_smbus_read_byte(client); if (status >= 0) { gsb->bdata = status; status = 0; } } else { status = i2c_smbus_write_byte(client, gsb->bdata); } break; case ACPI_GSB_ACCESS_ATTRIB_BYTE: if (action == ACPI_READ) { status = i2c_smbus_read_byte_data(client, command); if (status >= 0) { gsb->bdata = status; status = 0; } } else { status = i2c_smbus_write_byte_data(client, command, gsb->bdata); } break; case ACPI_GSB_ACCESS_ATTRIB_WORD: if (action == ACPI_READ) { status = i2c_smbus_read_word_data(client, command); if (status >= 0) { gsb->wdata = status; status = 0; } } else { status = i2c_smbus_write_word_data(client, command, gsb->wdata); } break; case ACPI_GSB_ACCESS_ATTRIB_BLOCK: if (action == ACPI_READ) { status = i2c_smbus_read_block_data(client, command, gsb->data); if (status >= 0) { gsb->len = status; status = 0; } } else { status = i2c_smbus_write_block_data(client, command, gsb->len, gsb->data); } break; case ACPI_GSB_ACCESS_ATTRIB_MULTIBYTE: if (action == ACPI_READ) { status = acpi_gsb_i2c_read_bytes(client, command, gsb->data, info->access_length); } else { status = acpi_gsb_i2c_write_bytes(client, command, gsb->data, info->access_length); } break; default: dev_warn(&adapter->dev, "protocol 0x%02x not supported for client 0x%02x\n", accessor_type, client->addr); ret = AE_BAD_PARAMETER; goto err; } gsb->status = status; err: kfree(client); ACPI_FREE(ares); return ret; } int i2c_acpi_install_space_handler(struct i2c_adapter *adapter) { acpi_handle handle; struct i2c_acpi_handler_data *data; acpi_status status; if (!adapter->dev.parent) return -ENODEV; handle = ACPI_HANDLE(adapter->dev.parent); if (!handle) return -ENODEV; data = kzalloc(sizeof(struct i2c_acpi_handler_data), GFP_KERNEL); if (!data) return -ENOMEM; data->adapter = adapter; status = acpi_bus_attach_private_data(handle, (void *)data); if (ACPI_FAILURE(status)) { kfree(data); return -ENOMEM; } status = acpi_install_address_space_handler(handle, ACPI_ADR_SPACE_GSBUS, &i2c_acpi_space_handler, NULL, data); if (ACPI_FAILURE(status)) { dev_err(&adapter->dev, "Error installing i2c space handler\n"); acpi_bus_detach_private_data(handle); kfree(data); return -ENOMEM; } return 0; } void i2c_acpi_remove_space_handler(struct i2c_adapter *adapter) { acpi_handle handle; struct i2c_acpi_handler_data *data; acpi_status status; if (!adapter->dev.parent) return; handle = ACPI_HANDLE(adapter->dev.parent); if (!handle) return; acpi_remove_address_space_handler(handle, ACPI_ADR_SPACE_GSBUS, &i2c_acpi_space_handler); status = acpi_bus_get_private_data(handle, (void **)&data); if (ACPI_SUCCESS(status)) kfree(data); acpi_bus_detach_private_data(handle); } #endif /* CONFIG_ACPI_I2C_OPREGION */ |
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1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 | // SPDX-License-Identifier: GPL-2.0-or-later /* * SPCA508 chip based cameras subdriver * * Copyright (C) 2009 Jean-Francois Moine <http://moinejf.free.fr> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "spca508" #include "gspca.h" MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>"); MODULE_DESCRIPTION("GSPCA/SPCA508 USB Camera Driver"); MODULE_LICENSE("GPL"); /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ u8 subtype; #define CreativeVista 0 #define HamaUSBSightcam 1 #define HamaUSBSightcam2 2 #define IntelEasyPCCamera 3 #define MicroInnovationIC200 4 #define ViewQuestVQ110 5 }; static const struct v4l2_pix_format sif_mode[] = { {160, 120, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 3}, {176, 144, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {320, 240, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {352, 288, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; /* Frame packet header offsets for the spca508 */ #define SPCA508_OFFSET_DATA 37 /* * Initialization data: this is the first set-up data written to the * device (before the open data). */ static const u16 spca508_init_data[][2] = { {0x0000, 0x870b}, {0x0020, 0x8112}, /* Video drop enable, ISO streaming disable */ {0x0003, 0x8111}, /* Reset compression & memory */ {0x0000, 0x8110}, /* Disable all outputs */ /* READ {0x0000, 0x8114} -> 0000: 00 */ {0x0000, 0x8114}, /* SW GPIO data */ {0x0008, 0x8110}, /* Enable charge pump output */ {0x0002, 0x8116}, /* 200 kHz pump clock */ /* UNKNOWN DIRECTION (URB_FUNCTION_SELECT_INTERFACE:) */ {0x0003, 0x8111}, /* Reset compression & memory */ {0x0000, 0x8111}, /* Normal mode (not reset) */ {0x0098, 0x8110}, /* Enable charge pump output, sync.serial,external 2x clock */ {0x000d, 0x8114}, /* SW GPIO data */ {0x0002, 0x8116}, /* 200 kHz pump clock */ {0x0020, 0x8112}, /* Video drop enable, ISO streaming disable */ /* --------------------------------------- */ {0x000f, 0x8402}, /* memory bank */ {0x0000, 0x8403}, /* ... address */ /* --------------------------------------- */ /* 0x88__ is Synchronous Serial Interface. */ /* TBD: This table could be expressed more compactly */ /* using spca508_write_i2c_vector(). */ /* TBD: Should see if the values in spca50x_i2c_data */ /* would work with the VQ110 instead of the values */ /* below. */ {0x00c0, 0x8804}, /* SSI slave addr */ {0x0008, 0x8802}, /* 375 Khz SSI clock */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, /* 375 Khz SSI clock */ {0x0012, 0x8801}, /* SSI reg addr */ {0x0080, 0x8800}, /* SSI data to write */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, /* 375 Khz SSI clock */ {0x0012, 0x8801}, /* SSI reg addr */ {0x0000, 0x8800}, /* SSI data to write */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, /* 375 Khz SSI clock */ {0x0011, 0x8801}, /* SSI reg addr */ {0x0040, 0x8800}, /* SSI data to write */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0013, 0x8801}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0014, 0x8801}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0015, 0x8801}, {0x0001, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0016, 0x8801}, {0x0003, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0017, 0x8801}, {0x0036, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0018, 0x8801}, {0x00ec, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x001a, 0x8801}, {0x0094, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x001b, 0x8801}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0027, 0x8801}, {0x00a2, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0028, 0x8801}, {0x0040, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x002a, 0x8801}, {0x0084, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x002b, 0x8801}, {0x00a8, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x002c, 0x8801}, {0x00fe, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x002d, 0x8801}, {0x0003, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0038, 0x8801}, {0x0083, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0033, 0x8801}, {0x0081, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0034, 0x8801}, {0x004a, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0039, 0x8801}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0010, 0x8801}, {0x00a8, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0006, 0x8801}, {0x0058, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0000, 0x8801}, {0x0004, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0040, 0x8801}, {0x0080, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0041, 0x8801}, {0x000c, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0042, 0x8801}, {0x000c, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0043, 0x8801}, {0x0028, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0044, 0x8801}, {0x0080, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0045, 0x8801}, {0x0020, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0046, 0x8801}, {0x0020, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0047, 0x8801}, {0x0080, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0048, 0x8801}, {0x004c, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x0049, 0x8801}, {0x0084, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x004a, 0x8801}, {0x0084, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x0008, 0x8802}, {0x004b, 0x8801}, {0x0084, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* --------------------------------------- */ {0x0012, 0x8700}, /* Clock speed 48Mhz/(2+2)/2= 6 Mhz */ {0x0000, 0x8701}, /* CKx1 clock delay adj */ {0x0000, 0x8701}, /* CKx1 clock delay adj */ {0x0001, 0x870c}, /* CKOx2 output */ /* --------------------------------------- */ {0x0080, 0x8600}, /* Line memory read counter (L) */ {0x0001, 0x8606}, /* reserved */ {0x0064, 0x8607}, /* Line memory read counter (H) 0x6480=25,728 */ {0x002a, 0x8601}, /* CDSP sharp interpolation mode, * line sel for color sep, edge enhance enab */ {0x0000, 0x8602}, /* optical black level for user settng = 0 */ {0x0080, 0x8600}, /* Line memory read counter (L) */ {0x000a, 0x8603}, /* optical black level calc mode: * auto; optical black offset = 10 */ {0x00df, 0x865b}, /* Horiz offset for valid pixels (L)=0xdf */ {0x0012, 0x865c}, /* Vert offset for valid lines (L)=0x12 */ /* The following two lines seem to be the "wrong" resolution. */ /* But perhaps these indicate the actual size of the sensor */ /* rather than the size of the current video mode. */ {0x0058, 0x865d}, /* Horiz valid pixels (*4) (L) = 352 */ {0x0048, 0x865e}, /* Vert valid lines (*4) (L) = 288 */ {0x0015, 0x8608}, /* A11 Coef ... */ {0x0030, 0x8609}, {0x00fb, 0x860a}, {0x003e, 0x860b}, {0x00ce, 0x860c}, {0x00f4, 0x860d}, {0x00eb, 0x860e}, {0x00dc, 0x860f}, {0x0039, 0x8610}, {0x0001, 0x8611}, /* R offset for white balance ... */ {0x0000, 0x8612}, {0x0001, 0x8613}, {0x0000, 0x8614}, {0x005b, 0x8651}, /* R gain for white balance ... */ {0x0040, 0x8652}, {0x0060, 0x8653}, {0x0040, 0x8654}, {0x0000, 0x8655}, {0x0001, 0x863f}, /* Fixed gamma correction enable, USB control, * lum filter disable, lum noise clip disable */ {0x00a1, 0x8656}, /* Window1 size 256x256, Windows2 size 64x64, * gamma look-up disable, * new edge enhancement enable */ {0x0018, 0x8657}, /* Edge gain high thresh */ {0x0020, 0x8658}, /* Edge gain low thresh */ {0x000a, 0x8659}, /* Edge bandwidth high threshold */ {0x0005, 0x865a}, /* Edge bandwidth low threshold */ /* -------------------------------- */ {0x0030, 0x8112}, /* Video drop enable, ISO streaming enable */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0xa908, 0x8802}, {0x0034, 0x8801}, /* SSI reg addr */ {0x00ca, 0x8800}, /* SSI data to write */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0x1f08, 0x8802}, {0x0006, 0x8801}, {0x0080, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* ----- Read back coefs we wrote earlier. */ /* READ { 0x0000, 0x8608 } -> 0000: 15 */ /* READ { 0x0000, 0x8609 } -> 0000: 30 */ /* READ { 0x0000, 0x860a } -> 0000: fb */ /* READ { 0x0000, 0x860b } -> 0000: 3e */ /* READ { 0x0000, 0x860c } -> 0000: ce */ /* READ { 0x0000, 0x860d } -> 0000: f4 */ /* READ { 0x0000, 0x860e } -> 0000: eb */ /* READ { 0x0000, 0x860f } -> 0000: dc */ /* READ { 0x0000, 0x8610 } -> 0000: 39 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 08 */ {0xb008, 0x8802}, {0x0006, 0x8801}, {0x007d, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* This chunk is seemingly redundant with */ /* earlier commands (A11 Coef...), but if I disable it, */ /* the image appears too dark. Maybe there was some kind of */ /* reset since the earlier commands, so this is necessary again. */ {0x0015, 0x8608}, {0x0030, 0x8609}, {0xfffb, 0x860a}, {0x003e, 0x860b}, {0xffce, 0x860c}, {0xfff4, 0x860d}, {0xffeb, 0x860e}, {0xffdc, 0x860f}, {0x0039, 0x8610}, {0x0018, 0x8657}, {0x0000, 0x8508}, /* Disable compression. */ /* Previous line was: {0x0021, 0x8508}, * Enable compression. */ {0x0032, 0x850b}, /* compression stuff */ {0x0003, 0x8509}, /* compression stuff */ {0x0011, 0x850a}, /* compression stuff */ {0x0021, 0x850d}, /* compression stuff */ {0x0010, 0x850c}, /* compression stuff */ {0x0003, 0x8500}, /* *** Video mode: 160x120 */ {0x0001, 0x8501}, /* Hardware-dominated snap control */ {0x0061, 0x8656}, /* Window1 size 128x128, Windows2 size 128x128, * gamma look-up disable, * new edge enhancement enable */ {0x0018, 0x8617}, /* Window1 start X (*2) */ {0x0008, 0x8618}, /* Window1 start Y (*2) */ {0x0061, 0x8656}, /* Window1 size 128x128, Windows2 size 128x128, * gamma look-up disable, * new edge enhancement enable */ {0x0058, 0x8619}, /* Window2 start X (*2) */ {0x0008, 0x861a}, /* Window2 start Y (*2) */ {0x00ff, 0x8615}, /* High lum thresh for white balance */ {0x0000, 0x8616}, /* Low lum thresh for white balance */ {0x0012, 0x8700}, /* Clock speed 48Mhz/(2+2)/2= 6 Mhz */ {0x0012, 0x8700}, /* Clock speed 48Mhz/(2+2)/2= 6 Mhz */ /* READ { 0x0000, 0x8656 } -> 0000: 61 */ {0x0028, 0x8802}, /* 375 Khz SSI clock, SSI r/w sync with VSYNC */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 28 */ {0x1f28, 0x8802}, /* 375 Khz SSI clock, SSI r/w sync with VSYNC */ {0x0010, 0x8801}, /* SSI reg addr */ {0x003e, 0x8800}, /* SSI data to write */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ {0x0028, 0x8802}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 28 */ {0x1f28, 0x8802}, {0x0000, 0x8801}, {0x001f, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ {0x0001, 0x8602}, /* optical black level for user settning = 1 */ /* Original: */ {0x0023, 0x8700}, /* Clock speed 48Mhz/(3+2)/4= 2.4 Mhz */ {0x000f, 0x8602}, /* optical black level for user settning = 15 */ {0x0028, 0x8802}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 28 */ {0x1f28, 0x8802}, {0x0010, 0x8801}, {0x007b, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ {0x002f, 0x8651}, /* R gain for white balance ... */ {0x0080, 0x8653}, /* READ { 0x0000, 0x8655 } -> 0000: 00 */ {0x0000, 0x8655}, {0x0030, 0x8112}, /* Video drop enable, ISO streaming enable */ {0x0020, 0x8112}, /* Video drop enable, ISO streaming disable */ /* UNKNOWN DIRECTION (URB_FUNCTION_SELECT_INTERFACE: (ALT=0) ) */ {} }; /* * Initialization data for Intel EasyPC Camera CS110 */ static const u16 spca508cs110_init_data[][2] = { {0x0000, 0x870b}, /* Reset CTL3 */ {0x0003, 0x8111}, /* Soft Reset compression, memory, TG & CDSP */ {0x0000, 0x8111}, /* Normal operation on reset */ {0x0090, 0x8110}, /* External Clock 2x & Synchronous Serial Interface Output */ {0x0020, 0x8112}, /* Video Drop packet enable */ {0x0000, 0x8114}, /* Software GPIO output data */ {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0003, 0x8114}, /* Initial sequence Synchronous Serial Interface */ {0x000f, 0x8402}, /* Memory bank Address */ {0x0000, 0x8403}, /* Memory bank Address */ {0x00ba, 0x8804}, /* SSI Slave address */ {0x0010, 0x8802}, /* 93.75kHz SSI Clock Two DataByte */ {0x0010, 0x8802}, /* 93.75kHz SSI Clock two DataByte */ {0x0001, 0x8801}, {0x000a, 0x8805}, /* a - NWG: Dunno what this is about */ {0x0000, 0x8800}, {0x0010, 0x8802}, {0x0002, 0x8801}, {0x0000, 0x8805}, {0x0000, 0x8800}, {0x0010, 0x8802}, {0x0003, 0x8801}, {0x0027, 0x8805}, {0x0001, 0x8800}, {0x0010, 0x8802}, {0x0004, 0x8801}, {0x0065, 0x8805}, {0x0001, 0x8800}, {0x0010, 0x8802}, {0x0005, 0x8801}, {0x0003, 0x8805}, {0x0000, 0x8800}, {0x0010, 0x8802}, {0x0006, 0x8801}, {0x001c, 0x8805}, {0x0000, 0x8800}, {0x0010, 0x8802}, {0x0007, 0x8801}, {0x002a, 0x8805}, {0x0000, 0x8800}, {0x0010, 0x8802}, {0x0002, 0x8704}, /* External input CKIx1 */ {0x0001, 0x8606}, /* 1 Line memory Read Counter (H) Result: (d)410 */ {0x009a, 0x8600}, /* Line memory Read Counter (L) */ {0x0001, 0x865b}, /* 1 Horizontal Offset for Valid Pixel(L) */ {0x0003, 0x865c}, /* 3 Vertical Offset for Valid Lines(L) */ {0x0058, 0x865d}, /* 58 Horizontal Valid Pixel Window(L) */ {0x0006, 0x8660}, /* Nibble data + input order */ {0x000a, 0x8602}, /* Optical black level set to 0x0a */ {0x0000, 0x8603}, /* Optical black level Offset */ /* {0x0000, 0x8611}, * 0 R Offset for white Balance */ /* {0x0000, 0x8612}, * 1 Gr Offset for white Balance */ /* {0x0000, 0x8613}, * 1f B Offset for white Balance */ /* {0x0000, 0x8614}, * f0 Gb Offset for white Balance */ {0x0040, 0x8651}, /* 2b BLUE gain for white balance good at all 60 */ {0x0030, 0x8652}, /* 41 Gr Gain for white Balance (L) */ {0x0035, 0x8653}, /* 26 RED gain for white balance */ {0x0035, 0x8654}, /* 40Gb Gain for white Balance (L) */ {0x0041, 0x863f}, /* Fixed Gamma correction enabled (makes colours look better) */ {0x0000, 0x8655}, /* High bits for white balance*****brightness control*** */ {} }; static const u16 spca508_sightcam_init_data[][2] = { /* This line seems to setup the frame/canvas */ {0x000f, 0x8402}, /* These 6 lines are needed to startup the webcam */ {0x0090, 0x8110}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0003, 0x8114}, {0x0080, 0x8804}, /* This part seems to make the pictures darker? (autobrightness?) */ {0x0001, 0x8801}, {0x0004, 0x8800}, {0x0003, 0x8801}, {0x00e0, 0x8800}, {0x0004, 0x8801}, {0x00b4, 0x8800}, {0x0005, 0x8801}, {0x0000, 0x8800}, {0x0006, 0x8801}, {0x00e0, 0x8800}, {0x0007, 0x8801}, {0x000c, 0x8800}, /* This section is just needed, it probably * does something like the previous section, * but the cam won't start if it's not included. */ {0x0014, 0x8801}, {0x0008, 0x8800}, {0x0015, 0x8801}, {0x0067, 0x8800}, {0x0016, 0x8801}, {0x0000, 0x8800}, {0x0017, 0x8801}, {0x0020, 0x8800}, {0x0018, 0x8801}, {0x0044, 0x8800}, /* Makes the picture darker - and the * cam won't start if not included */ {0x001e, 0x8801}, {0x00ea, 0x8800}, {0x001f, 0x8801}, {0x0001, 0x8800}, {0x0003, 0x8801}, {0x00e0, 0x8800}, /* seems to place the colors ontop of each other #1 */ {0x0006, 0x8704}, {0x0001, 0x870c}, {0x0016, 0x8600}, {0x0002, 0x8606}, /* if not included the pictures becomes _very_ dark */ {0x0064, 0x8607}, {0x003a, 0x8601}, {0x0000, 0x8602}, /* seems to place the colors ontop of each other #2 */ {0x0016, 0x8600}, {0x0018, 0x8617}, {0x0008, 0x8618}, {0x00a1, 0x8656}, /* webcam won't start if not included */ {0x0007, 0x865b}, {0x0001, 0x865c}, {0x0058, 0x865d}, {0x0048, 0x865e}, /* adjusts the colors */ {0x0049, 0x8651}, {0x0040, 0x8652}, {0x004c, 0x8653}, {0x0040, 0x8654}, {} }; static const u16 spca508_sightcam2_init_data[][2] = { {0x0020, 0x8112}, {0x000f, 0x8402}, {0x0000, 0x8403}, {0x0008, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x0009, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x000a, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x000b, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x000c, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x000d, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x000e, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x0007, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x000f, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x0018, 0x8660}, {0x0010, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x0011, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x0000, 0x86b0}, {0x0034, 0x86b1}, {0x0000, 0x86b2}, {0x0049, 0x86b3}, {0x0000, 0x86b4}, {0x0000, 0x86b4}, {0x0012, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x0013, 0x8201}, {0x0008, 0x8200}, {0x0001, 0x8200}, {0x0001, 0x86b0}, {0x00aa, 0x86b1}, {0x0000, 0x86b2}, {0x00e4, 0x86b3}, {0x0000, 0x86b4}, {0x0000, 0x86b4}, {0x0018, 0x8660}, {0x0090, 0x8110}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0003, 0x8114}, {0x0080, 0x8804}, {0x0003, 0x8801}, {0x0012, 0x8800}, {0x0004, 0x8801}, {0x0005, 0x8800}, {0x0005, 0x8801}, {0x0000, 0x8800}, {0x0006, 0x8801}, {0x0000, 0x8800}, {0x0007, 0x8801}, {0x0000, 0x8800}, {0x0008, 0x8801}, {0x0005, 0x8800}, {0x000a, 0x8700}, {0x000e, 0x8801}, {0x0004, 0x8800}, {0x0005, 0x8801}, {0x0047, 0x8800}, {0x0006, 0x8801}, {0x0000, 0x8800}, {0x0007, 0x8801}, {0x00c0, 0x8800}, {0x0008, 0x8801}, {0x0003, 0x8800}, {0x0013, 0x8801}, {0x0001, 0x8800}, {0x0009, 0x8801}, {0x0000, 0x8800}, {0x000a, 0x8801}, {0x0000, 0x8800}, {0x000b, 0x8801}, {0x0000, 0x8800}, {0x000c, 0x8801}, {0x0000, 0x8800}, {0x000e, 0x8801}, {0x0004, 0x8800}, {0x000f, 0x8801}, {0x0000, 0x8800}, {0x0010, 0x8801}, {0x0006, 0x8800}, {0x0011, 0x8801}, {0x0006, 0x8800}, {0x0012, 0x8801}, {0x0000, 0x8800}, {0x0013, 0x8801}, {0x0001, 0x8800}, {0x000a, 0x8700}, {0x0000, 0x8702}, {0x0000, 0x8703}, {0x00c2, 0x8704}, {0x0001, 0x870c}, {0x0044, 0x8600}, {0x0002, 0x8606}, {0x0064, 0x8607}, {0x003a, 0x8601}, {0x0008, 0x8602}, {0x0044, 0x8600}, {0x0018, 0x8617}, {0x0008, 0x8618}, {0x00a1, 0x8656}, {0x0004, 0x865b}, {0x0002, 0x865c}, {0x0058, 0x865d}, {0x0048, 0x865e}, {0x0012, 0x8608}, {0x002c, 0x8609}, {0x0002, 0x860a}, {0x002c, 0x860b}, {0x00db, 0x860c}, {0x00f9, 0x860d}, {0x00f1, 0x860e}, {0x00e3, 0x860f}, {0x002c, 0x8610}, {0x006c, 0x8651}, {0x0041, 0x8652}, {0x0059, 0x8653}, {0x0040, 0x8654}, {0x00fa, 0x8611}, {0x00ff, 0x8612}, {0x00f8, 0x8613}, {0x0000, 0x8614}, {0x0001, 0x863f}, {0x0000, 0x8640}, {0x0026, 0x8641}, {0x0045, 0x8642}, {0x0060, 0x8643}, {0x0075, 0x8644}, {0x0088, 0x8645}, {0x009b, 0x8646}, {0x00b0, 0x8647}, {0x00c5, 0x8648}, {0x00d2, 0x8649}, {0x00dc, 0x864a}, {0x00e5, 0x864b}, {0x00eb, 0x864c}, {0x00f0, 0x864d}, {0x00f6, 0x864e}, {0x00fa, 0x864f}, {0x00ff, 0x8650}, {0x0060, 0x8657}, {0x0010, 0x8658}, {0x0018, 0x8659}, {0x0005, 0x865a}, {0x0018, 0x8660}, {0x0003, 0x8509}, {0x0011, 0x850a}, {0x0032, 0x850b}, {0x0010, 0x850c}, {0x0021, 0x850d}, {0x0001, 0x8500}, {0x0000, 0x8508}, {0x0012, 0x8608}, {0x002c, 0x8609}, {0x0002, 0x860a}, {0x0039, 0x860b}, {0x00d0, 0x860c}, {0x00f7, 0x860d}, {0x00ed, 0x860e}, {0x00db, 0x860f}, {0x0039, 0x8610}, {0x0012, 0x8657}, {0x000c, 0x8619}, {0x0004, 0x861a}, {0x00a1, 0x8656}, {0x00c8, 0x8615}, {0x0032, 0x8616}, {0x0030, 0x8112}, {0x0020, 0x8112}, {0x0020, 0x8112}, {0x000f, 0x8402}, {0x0000, 0x8403}, {0x0090, 0x8110}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0003, 0x8114}, {0x0080, 0x8804}, {0x0003, 0x8801}, {0x0012, 0x8800}, {0x0004, 0x8801}, {0x0005, 0x8800}, {0x0005, 0x8801}, {0x0047, 0x8800}, {0x0006, 0x8801}, {0x0000, 0x8800}, {0x0007, 0x8801}, {0x00c0, 0x8800}, {0x0008, 0x8801}, {0x0003, 0x8800}, {0x000a, 0x8700}, {0x000e, 0x8801}, {0x0004, 0x8800}, {0x0005, 0x8801}, {0x0047, 0x8800}, {0x0006, 0x8801}, {0x0000, 0x8800}, {0x0007, 0x8801}, {0x00c0, 0x8800}, {0x0008, 0x8801}, {0x0003, 0x8800}, {0x0013, 0x8801}, {0x0001, 0x8800}, {0x0009, 0x8801}, {0x0000, 0x8800}, {0x000a, 0x8801}, {0x0000, 0x8800}, {0x000b, 0x8801}, {0x0000, 0x8800}, {0x000c, 0x8801}, {0x0000, 0x8800}, {0x000e, 0x8801}, {0x0004, 0x8800}, {0x000f, 0x8801}, {0x0000, 0x8800}, {0x0010, 0x8801}, {0x0006, 0x8800}, {0x0011, 0x8801}, {0x0006, 0x8800}, {0x0012, 0x8801}, {0x0000, 0x8800}, {0x0013, 0x8801}, {0x0001, 0x8800}, {0x000a, 0x8700}, {0x0000, 0x8702}, {0x0000, 0x8703}, {0x00c2, 0x8704}, {0x0001, 0x870c}, {0x0044, 0x8600}, {0x0002, 0x8606}, {0x0064, 0x8607}, {0x003a, 0x8601}, {0x0008, 0x8602}, {0x0044, 0x8600}, {0x0018, 0x8617}, {0x0008, 0x8618}, {0x00a1, 0x8656}, {0x0004, 0x865b}, {0x0002, 0x865c}, {0x0058, 0x865d}, {0x0048, 0x865e}, {0x0012, 0x8608}, {0x002c, 0x8609}, {0x0002, 0x860a}, {0x002c, 0x860b}, {0x00db, 0x860c}, {0x00f9, 0x860d}, {0x00f1, 0x860e}, {0x00e3, 0x860f}, {0x002c, 0x8610}, {0x006c, 0x8651}, {0x0041, 0x8652}, {0x0059, 0x8653}, {0x0040, 0x8654}, {0x00fa, 0x8611}, {0x00ff, 0x8612}, {0x00f8, 0x8613}, {0x0000, 0x8614}, {0x0001, 0x863f}, {0x0000, 0x8640}, {0x0026, 0x8641}, {0x0045, 0x8642}, {0x0060, 0x8643}, {0x0075, 0x8644}, {0x0088, 0x8645}, {0x009b, 0x8646}, {0x00b0, 0x8647}, {0x00c5, 0x8648}, {0x00d2, 0x8649}, {0x00dc, 0x864a}, {0x00e5, 0x864b}, {0x00eb, 0x864c}, {0x00f0, 0x864d}, {0x00f6, 0x864e}, {0x00fa, 0x864f}, {0x00ff, 0x8650}, {0x0060, 0x8657}, {0x0010, 0x8658}, {0x0018, 0x8659}, {0x0005, 0x865a}, {0x0018, 0x8660}, {0x0003, 0x8509}, {0x0011, 0x850a}, {0x0032, 0x850b}, {0x0010, 0x850c}, {0x0021, 0x850d}, {0x0001, 0x8500}, {0x0000, 0x8508}, {0x0012, 0x8608}, {0x002c, 0x8609}, {0x0002, 0x860a}, {0x0039, 0x860b}, {0x00d0, 0x860c}, {0x00f7, 0x860d}, {0x00ed, 0x860e}, {0x00db, 0x860f}, {0x0039, 0x8610}, {0x0012, 0x8657}, {0x0064, 0x8619}, /* This line starts it all, it is not needed here */ /* since it has been build into the driver */ /* jfm: don't start now */ /* {0x0030, 0x8112}, */ {} }; /* * Initialization data for Creative Webcam Vista */ static const u16 spca508_vista_init_data[][2] = { {0x0008, 0x8200}, /* Clear register */ {0x0000, 0x870b}, /* Reset CTL3 */ {0x0020, 0x8112}, /* Video Drop packet enable */ {0x0003, 0x8111}, /* Soft Reset compression, memory, TG & CDSP */ {0x0000, 0x8110}, /* Disable everything */ {0x0000, 0x8114}, /* Software GPIO output data */ {0x0000, 0x8114}, {0x0003, 0x8111}, {0x0000, 0x8111}, {0x0090, 0x8110}, /* Enable: SSI output, External 2X clock output */ {0x0020, 0x8112}, {0x0000, 0x8114}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0001, 0x8114}, {0x0003, 0x8114}, {0x000f, 0x8402}, /* Memory bank Address */ {0x0000, 0x8403}, /* Memory bank Address */ {0x00ba, 0x8804}, /* SSI Slave address */ {0x0010, 0x8802}, /* 93.75kHz SSI Clock Two DataByte */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, /* Will write 2 bytes (DATA1+DATA2) */ {0x0020, 0x8801}, /* Register address for SSI read/write */ {0x0044, 0x8805}, /* DATA2 */ {0x0004, 0x8800}, /* DATA1 -> write triggered */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0009, 0x8801}, {0x0042, 0x8805}, {0x0001, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x003c, 0x8801}, {0x0001, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0001, 0x8801}, {0x000a, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0002, 0x8801}, {0x0000, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0003, 0x8801}, {0x0027, 0x8805}, {0x0001, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0004, 0x8801}, {0x0065, 0x8805}, {0x0001, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0005, 0x8801}, {0x0003, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0006, 0x8801}, {0x001c, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0007, 0x8801}, {0x002a, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x000e, 0x8801}, {0x0000, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0028, 0x8801}, {0x002e, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0039, 0x8801}, {0x0013, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x003b, 0x8801}, {0x000c, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0035, 0x8801}, {0x0028, 0x8805}, {0x0000, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8803 } -> 0000: 00 */ /* READ { 0x0001, 0x8802 } -> 0000: 10 */ {0x0010, 0x8802}, {0x0009, 0x8801}, {0x0042, 0x8805}, {0x0001, 0x8800}, /* READ { 0x0001, 0x8803 } -> 0000: 00 */ {0x0050, 0x8703}, {0x0002, 0x8704}, /* External input CKIx1 */ {0x0001, 0x870c}, /* Select CKOx2 output */ {0x009a, 0x8600}, /* Line memory Read Counter (L) */ {0x0001, 0x8606}, /* 1 Line memory Read Counter (H) Result: (d)410 */ {0x0023, 0x8601}, {0x0010, 0x8602}, {0x000a, 0x8603}, {0x009a, 0x8600}, {0x0001, 0x865b}, /* 1 Horizontal Offset for Valid Pixel(L) */ {0x0003, 0x865c}, /* Vertical offset for valid lines (L) */ {0x0058, 0x865d}, /* Horizontal valid pixels window (L) */ {0x0048, 0x865e}, /* Vertical valid lines window (L) */ {0x0000, 0x865f}, {0x0006, 0x8660}, /* Enable nibble data input, select nibble input order */ {0x0013, 0x8608}, /* A11 Coeficients for color correction */ {0x0028, 0x8609}, /* Note: these values are confirmed at the end of array */ {0x0005, 0x860a}, /* ... */ {0x0025, 0x860b}, {0x00e1, 0x860c}, {0x00fa, 0x860d}, {0x00f4, 0x860e}, {0x00e8, 0x860f}, {0x0025, 0x8610}, /* A33 Coef. */ {0x00fc, 0x8611}, /* White balance offset: R */ {0x0001, 0x8612}, /* White balance offset: Gr */ {0x00fe, 0x8613}, /* White balance offset: B */ {0x0000, 0x8614}, /* White balance offset: Gb */ {0x0064, 0x8651}, /* R gain for white balance (L) */ {0x0040, 0x8652}, /* Gr gain for white balance (L) */ {0x0066, 0x8653}, /* B gain for white balance (L) */ {0x0040, 0x8654}, /* Gb gain for white balance (L) */ {0x0001, 0x863f}, /* Enable fixed gamma correction */ {0x00a1, 0x8656}, /* Size - Window1: 256x256, Window2: 128x128, * UV division: UV no change, * Enable New edge enhancement */ {0x0018, 0x8657}, /* Edge gain high threshold */ {0x0020, 0x8658}, /* Edge gain low threshold */ {0x000a, 0x8659}, /* Edge bandwidth high threshold */ {0x0005, 0x865a}, /* Edge bandwidth low threshold */ {0x0064, 0x8607}, /* UV filter enable */ {0x0016, 0x8660}, {0x0000, 0x86b0}, /* Bad pixels compensation address */ {0x00dc, 0x86b1}, /* X coord for bad pixels compensation (L) */ {0x0000, 0x86b2}, {0x0009, 0x86b3}, /* Y coord for bad pixels compensation (L) */ {0x0000, 0x86b4}, {0x0001, 0x86b0}, {0x00f5, 0x86b1}, {0x0000, 0x86b2}, {0x00c6, 0x86b3}, {0x0000, 0x86b4}, {0x0002, 0x86b0}, {0x001c, 0x86b1}, {0x0001, 0x86b2}, {0x00d7, 0x86b3}, {0x0000, 0x86b4}, {0x0003, 0x86b0}, {0x001c, 0x86b1}, {0x0001, 0x86b2}, {0x00d8, 0x86b3}, {0x0000, 0x86b4}, {0x0004, 0x86b0}, {0x001d, 0x86b1}, {0x0001, 0x86b2}, {0x00d8, 0x86b3}, {0x0000, 0x86b4}, {0x001e, 0x8660}, /* READ { 0x0000, 0x8608 } -> 0000: 13 */ /* READ { 0x0000, 0x8609 } -> 0000: 28 */ /* READ { 0x0000, 0x8610 } -> 0000: 05 */ /* READ { 0x0000, 0x8611 } -> 0000: 25 */ /* READ { 0x0000, 0x8612 } -> 0000: e1 */ /* READ { 0x0000, 0x8613 } -> 0000: fa */ /* READ { 0x0000, 0x8614 } -> 0000: f4 */ /* READ { 0x0000, 0x8615 } -> 0000: e8 */ /* READ { 0x0000, 0x8616 } -> 0000: 25 */ {} }; static int reg_write(struct gspca_dev *gspca_dev, u16 index, u16 value) { int ret; struct usb_device *dev = gspca_dev->dev; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0, /* request */ USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); gspca_dbg(gspca_dev, D_USBO, "reg write i:0x%04x = 0x%02x\n", index, value); if (ret < 0) pr_err("reg write: error %d\n", ret); return ret; } /* read 1 byte */ /* returns: negative is error, pos or zero is data */ static int reg_read(struct gspca_dev *gspca_dev, u16 index) /* wIndex */ { int ret; ret = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0), 0, /* register */ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, /* value */ index, gspca_dev->usb_buf, 1, 500); /* timeout */ gspca_dbg(gspca_dev, D_USBI, "reg read i:%04x --> %02x\n", index, gspca_dev->usb_buf[0]); if (ret < 0) { pr_err("reg_read err %d\n", ret); return ret; } return gspca_dev->usb_buf[0]; } /* send 1 or 2 bytes to the sensor via the Synchronous Serial Interface */ static int ssi_w(struct gspca_dev *gspca_dev, u16 reg, u16 val) { int ret, retry; ret = reg_write(gspca_dev, 0x8802, reg >> 8); if (ret < 0) goto out; ret = reg_write(gspca_dev, 0x8801, reg & 0x00ff); if (ret < 0) goto out; if ((reg & 0xff00) == 0x1000) { /* if 2 bytes */ ret = reg_write(gspca_dev, 0x8805, val & 0x00ff); if (ret < 0) goto out; val >>= 8; } ret = reg_write(gspca_dev, 0x8800, val); if (ret < 0) goto out; /* poll until not busy */ retry = 10; for (;;) { ret = reg_read(gspca_dev, 0x8803); if (ret < 0) break; if (gspca_dev->usb_buf[0] == 0) break; if (--retry <= 0) { gspca_err(gspca_dev, "ssi_w busy %02x\n", gspca_dev->usb_buf[0]); ret = -1; break; } msleep(8); } out: return ret; } static int write_vector(struct gspca_dev *gspca_dev, const u16 (*data)[2]) { int ret = 0; while ((*data)[1] != 0) { if ((*data)[1] & 0x8000) { if ((*data)[1] == 0xdd00) /* delay */ msleep((*data)[0]); else ret = reg_write(gspca_dev, (*data)[1], (*data)[0]); } else { ret = ssi_w(gspca_dev, (*data)[1], (*data)[0]); } if (ret < 0) break; data++; } return ret; } /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; const u16 (*init_data)[2]; static const u16 (*(init_data_tb[]))[2] = { spca508_vista_init_data, /* CreativeVista 0 */ spca508_sightcam_init_data, /* HamaUSBSightcam 1 */ spca508_sightcam2_init_data, /* HamaUSB |