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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 1292 1293 1294 1295 1296 1297 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2002,2003 by Andreas Gruenbacher <a.gruenbacher@computer.org> * * Fixes from William Schumacher incorporated on 15 March 2001. * (Reported by Charles Bertsch, <CBertsch@microtest.com>). */ /* * This file contains generic functions for manipulating * POSIX 1003.1e draft standard 17 ACLs. */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/atomic.h> #include <linux/fs.h> #include <linux/sched.h> #include <linux/cred.h> #include <linux/posix_acl.h> #include <linux/posix_acl_xattr.h> #include <linux/xattr.h> #include <linux/export.h> #include <linux/user_namespace.h> #include <linux/namei.h> #include <linux/mnt_idmapping.h> #include <linux/iversion.h> #include <linux/security.h> #include <linux/fsnotify.h> #include <linux/filelock.h> #include "internal.h" static struct posix_acl **acl_by_type(struct inode *inode, int type) { switch (type) { case ACL_TYPE_ACCESS: return &inode->i_acl; case ACL_TYPE_DEFAULT: return &inode->i_default_acl; default: BUG(); } } struct posix_acl *get_cached_acl(struct inode *inode, int type) { struct posix_acl **p = acl_by_type(inode, type); struct posix_acl *acl; for (;;) { rcu_read_lock(); acl = rcu_dereference(*p); if (!acl || is_uncached_acl(acl) || refcount_inc_not_zero(&acl->a_refcount)) break; rcu_read_unlock(); cpu_relax(); } rcu_read_unlock(); return acl; } EXPORT_SYMBOL(get_cached_acl); struct posix_acl *get_cached_acl_rcu(struct inode *inode, int type) { struct posix_acl *acl = rcu_dereference(*acl_by_type(inode, type)); if (acl == ACL_DONT_CACHE) { struct posix_acl *ret; ret = inode->i_op->get_inode_acl(inode, type, LOOKUP_RCU); if (!IS_ERR(ret)) acl = ret; } return acl; } EXPORT_SYMBOL(get_cached_acl_rcu); void set_cached_acl(struct inode *inode, int type, struct posix_acl *acl) { struct posix_acl **p = acl_by_type(inode, type); struct posix_acl *old; old = xchg(p, posix_acl_dup(acl)); if (!is_uncached_acl(old)) posix_acl_release(old); } EXPORT_SYMBOL(set_cached_acl); static void __forget_cached_acl(struct posix_acl **p) { struct posix_acl *old; old = xchg(p, ACL_NOT_CACHED); if (!is_uncached_acl(old)) posix_acl_release(old); } void forget_cached_acl(struct inode *inode, int type) { __forget_cached_acl(acl_by_type(inode, type)); } EXPORT_SYMBOL(forget_cached_acl); void forget_all_cached_acls(struct inode *inode) { __forget_cached_acl(&inode->i_acl); __forget_cached_acl(&inode->i_default_acl); } EXPORT_SYMBOL(forget_all_cached_acls); static struct posix_acl *__get_acl(struct mnt_idmap *idmap, struct dentry *dentry, struct inode *inode, int type) { struct posix_acl *sentinel; struct posix_acl **p; struct posix_acl *acl; /* * The sentinel is used to detect when another operation like * set_cached_acl() or forget_cached_acl() races with get_inode_acl(). * It is guaranteed that is_uncached_acl(sentinel) is true. */ acl = get_cached_acl(inode, type); if (!is_uncached_acl(acl)) return acl; if (!IS_POSIXACL(inode)) return NULL; sentinel = uncached_acl_sentinel(current); p = acl_by_type(inode, type); /* * If the ACL isn't being read yet, set our sentinel. Otherwise, the * current value of the ACL will not be ACL_NOT_CACHED and so our own * sentinel will not be set; another task will update the cache. We * could wait for that other task to complete its job, but it's easier * to just call ->get_inode_acl to fetch the ACL ourself. (This is * going to be an unlikely race.) */ cmpxchg(p, ACL_NOT_CACHED, sentinel); /* * Normally, the ACL returned by ->get{_inode}_acl will be cached. * A filesystem can prevent that by calling * forget_cached_acl(inode, type) in ->get{_inode}_acl. * * If the filesystem doesn't have a get{_inode}_ acl() function at all, * we'll just create the negative cache entry. */ if (dentry && inode->i_op->get_acl) { acl = inode->i_op->get_acl(idmap, dentry, type); } else if (inode->i_op->get_inode_acl) { acl = inode->i_op->get_inode_acl(inode, type, false); } else { set_cached_acl(inode, type, NULL); return NULL; } if (IS_ERR(acl)) { /* * Remove our sentinel so that we don't block future attempts * to cache the ACL. */ cmpxchg(p, sentinel, ACL_NOT_CACHED); return acl; } /* * Cache the result, but only if our sentinel is still in place. */ posix_acl_dup(acl); if (unlikely(!try_cmpxchg(p, &sentinel, acl))) posix_acl_release(acl); return acl; } struct posix_acl *get_inode_acl(struct inode *inode, int type) { return __get_acl(&nop_mnt_idmap, NULL, inode, type); } EXPORT_SYMBOL(get_inode_acl); /* * Init a fresh posix_acl */ void posix_acl_init(struct posix_acl *acl, int count) { refcount_set(&acl->a_refcount, 1); acl->a_count = count; } EXPORT_SYMBOL(posix_acl_init); /* * Allocate a new ACL with the specified number of entries. */ struct posix_acl * posix_acl_alloc(unsigned int count, gfp_t flags) { struct posix_acl *acl; acl = kmalloc(struct_size(acl, a_entries, count), flags); if (acl) posix_acl_init(acl, count); return acl; } EXPORT_SYMBOL(posix_acl_alloc); /* * Clone an ACL. */ struct posix_acl * posix_acl_clone(const struct posix_acl *acl, gfp_t flags) { struct posix_acl *clone = NULL; if (acl) { clone = kmemdup(acl, struct_size(acl, a_entries, acl->a_count), flags); if (clone) refcount_set(&clone->a_refcount, 1); } return clone; } EXPORT_SYMBOL_GPL(posix_acl_clone); /* * Check if an acl is valid. Returns 0 if it is, or -E... otherwise. */ int posix_acl_valid(struct user_namespace *user_ns, const struct posix_acl *acl) { const struct posix_acl_entry *pa, *pe; int state = ACL_USER_OBJ; int needs_mask = 0; FOREACH_ACL_ENTRY(pa, acl, pe) { if (pa->e_perm & ~(ACL_READ|ACL_WRITE|ACL_EXECUTE)) return -EINVAL; switch (pa->e_tag) { case ACL_USER_OBJ: if (state == ACL_USER_OBJ) { state = ACL_USER; break; } return -EINVAL; case ACL_USER: if (state != ACL_USER) return -EINVAL; if (!kuid_has_mapping(user_ns, pa->e_uid)) return -EINVAL; needs_mask = 1; break; case ACL_GROUP_OBJ: if (state == ACL_USER) { state = ACL_GROUP; break; } return -EINVAL; case ACL_GROUP: if (state != ACL_GROUP) return -EINVAL; if (!kgid_has_mapping(user_ns, pa->e_gid)) return -EINVAL; needs_mask = 1; break; case ACL_MASK: if (state != ACL_GROUP) return -EINVAL; state = ACL_OTHER; break; case ACL_OTHER: if (state == ACL_OTHER || (state == ACL_GROUP && !needs_mask)) { state = 0; break; } return -EINVAL; default: return -EINVAL; } } if (state == 0) return 0; return -EINVAL; } EXPORT_SYMBOL(posix_acl_valid); /* * Returns 0 if the acl can be exactly represented in the traditional * file mode permission bits, or else 1. Returns -E... on error. */ int posix_acl_equiv_mode(const struct posix_acl *acl, umode_t *mode_p) { const struct posix_acl_entry *pa, *pe; umode_t mode = 0; int not_equiv = 0; /* * A null ACL can always be presented as mode bits. */ if (!acl) return 0; FOREACH_ACL_ENTRY(pa, acl, pe) { switch (pa->e_tag) { case ACL_USER_OBJ: mode |= (pa->e_perm & S_IRWXO) << 6; break; case ACL_GROUP_OBJ: mode |= (pa->e_perm & S_IRWXO) << 3; break; case ACL_OTHER: mode |= pa->e_perm & S_IRWXO; break; case ACL_MASK: mode = (mode & ~S_IRWXG) | ((pa->e_perm & S_IRWXO) << 3); not_equiv = 1; break; case ACL_USER: case ACL_GROUP: not_equiv = 1; break; default: return -EINVAL; } } if (mode_p) *mode_p = (*mode_p & ~S_IRWXUGO) | mode; return not_equiv; } EXPORT_SYMBOL(posix_acl_equiv_mode); /* * Create an ACL representing the file mode permission bits of an inode. */ struct posix_acl * posix_acl_from_mode(umode_t mode, gfp_t flags) { struct posix_acl *acl = posix_acl_alloc(3, flags); if (!acl) return ERR_PTR(-ENOMEM); acl->a_entries[0].e_tag = ACL_USER_OBJ; acl->a_entries[0].e_perm = (mode & S_IRWXU) >> 6; acl->a_entries[1].e_tag = ACL_GROUP_OBJ; acl->a_entries[1].e_perm = (mode & S_IRWXG) >> 3; acl->a_entries[2].e_tag = ACL_OTHER; acl->a_entries[2].e_perm = (mode & S_IRWXO); return acl; } EXPORT_SYMBOL(posix_acl_from_mode); /* * Return 0 if current is granted want access to the inode * by the acl. Returns -E... otherwise. */ int posix_acl_permission(struct mnt_idmap *idmap, struct inode *inode, const struct posix_acl *acl, int want) { const struct posix_acl_entry *pa, *pe, *mask_obj; struct user_namespace *fs_userns = i_user_ns(inode); int found = 0; vfsuid_t vfsuid; vfsgid_t vfsgid; want &= MAY_READ | MAY_WRITE | MAY_EXEC; FOREACH_ACL_ENTRY(pa, acl, pe) { switch(pa->e_tag) { case ACL_USER_OBJ: /* (May have been checked already) */ vfsuid = i_uid_into_vfsuid(idmap, inode); if (vfsuid_eq_kuid(vfsuid, current_fsuid())) goto check_perm; break; case ACL_USER: vfsuid = make_vfsuid(idmap, fs_userns, pa->e_uid); if (vfsuid_eq_kuid(vfsuid, current_fsuid())) goto mask; break; case ACL_GROUP_OBJ: vfsgid = i_gid_into_vfsgid(idmap, inode); if (vfsgid_in_group_p(vfsgid)) { found = 1; if ((pa->e_perm & want) == want) goto mask; } break; case ACL_GROUP: vfsgid = make_vfsgid(idmap, fs_userns, pa->e_gid); if (vfsgid_in_group_p(vfsgid)) { found = 1; if ((pa->e_perm & want) == want) goto mask; } break; case ACL_MASK: break; case ACL_OTHER: if (found) return -EACCES; else goto check_perm; default: return -EIO; } } return -EIO; mask: for (mask_obj = pa+1; mask_obj != pe; mask_obj++) { if (mask_obj->e_tag == ACL_MASK) { if ((pa->e_perm & mask_obj->e_perm & want) == want) return 0; return -EACCES; } } check_perm: if ((pa->e_perm & want) == want) return 0; return -EACCES; } /* * Modify acl when creating a new inode. The caller must ensure the acl is * only referenced once. * * mode_p initially must contain the mode parameter to the open() / creat() * system calls. All permissions that are not granted by the acl are removed. * The permissions in the acl are changed to reflect the mode_p parameter. */ static int posix_acl_create_masq(struct posix_acl *acl, umode_t *mode_p) { struct posix_acl_entry *pa, *pe; struct posix_acl_entry *group_obj = NULL, *mask_obj = NULL; umode_t mode = *mode_p; int not_equiv = 0; /* assert(atomic_read(acl->a_refcount) == 1); */ FOREACH_ACL_ENTRY(pa, acl, pe) { switch(pa->e_tag) { case ACL_USER_OBJ: pa->e_perm &= (mode >> 6) | ~S_IRWXO; mode &= (pa->e_perm << 6) | ~S_IRWXU; break; case ACL_USER: case ACL_GROUP: not_equiv = 1; break; case ACL_GROUP_OBJ: group_obj = pa; break; case ACL_OTHER: pa->e_perm &= mode | ~S_IRWXO; mode &= pa->e_perm | ~S_IRWXO; break; case ACL_MASK: mask_obj = pa; not_equiv = 1; break; default: return -EIO; } } if (mask_obj) { mask_obj->e_perm &= (mode >> 3) | ~S_IRWXO; mode &= (mask_obj->e_perm << 3) | ~S_IRWXG; } else { if (!group_obj) return -EIO; group_obj->e_perm &= (mode >> 3) | ~S_IRWXO; mode &= (group_obj->e_perm << 3) | ~S_IRWXG; } *mode_p = (*mode_p & ~S_IRWXUGO) | mode; return not_equiv; } /* * Modify the ACL for the chmod syscall. */ static int __posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) { struct posix_acl_entry *group_obj = NULL, *mask_obj = NULL; struct posix_acl_entry *pa, *pe; /* assert(atomic_read(acl->a_refcount) == 1); */ FOREACH_ACL_ENTRY(pa, acl, pe) { switch(pa->e_tag) { case ACL_USER_OBJ: pa->e_perm = (mode & S_IRWXU) >> 6; break; case ACL_USER: case ACL_GROUP: break; case ACL_GROUP_OBJ: group_obj = pa; break; case ACL_MASK: mask_obj = pa; break; case ACL_OTHER: pa->e_perm = (mode & S_IRWXO); break; default: return -EIO; } } if (mask_obj) { mask_obj->e_perm = (mode & S_IRWXG) >> 3; } else { if (!group_obj) return -EIO; group_obj->e_perm = (mode & S_IRWXG) >> 3; } return 0; } int __posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) { struct posix_acl *clone = posix_acl_clone(*acl, gfp); int err = -ENOMEM; if (clone) { err = posix_acl_create_masq(clone, mode_p); if (err < 0) { posix_acl_release(clone); clone = NULL; } } posix_acl_release(*acl); *acl = clone; return err; } EXPORT_SYMBOL(__posix_acl_create); int __posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) { struct posix_acl *clone = posix_acl_clone(*acl, gfp); int err = -ENOMEM; if (clone) { err = __posix_acl_chmod_masq(clone, mode); if (err) { posix_acl_release(clone); clone = NULL; } } posix_acl_release(*acl); *acl = clone; return err; } EXPORT_SYMBOL(__posix_acl_chmod); /** * posix_acl_chmod - chmod a posix acl * * @idmap: idmap of the mount @inode was found from * @dentry: dentry to check permissions on * @mode: the new mode of @inode * * If the dentry has been found through an idmapped mount the idmap of * the vfsmount must be passed through @idmap. This function will then * take care to map the inode according to @idmap before checking * permissions. On non-idmapped mounts or if permission checking is to be * performed on the raw inode simply pass @nop_mnt_idmap. */ int posix_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry, umode_t mode) { struct inode *inode = d_inode(dentry); struct posix_acl *acl; int ret = 0; if (!IS_POSIXACL(inode)) return 0; if (!inode->i_op->set_acl) return -EOPNOTSUPP; acl = get_inode_acl(inode, ACL_TYPE_ACCESS); if (IS_ERR_OR_NULL(acl)) { if (acl == ERR_PTR(-EOPNOTSUPP)) return 0; return PTR_ERR(acl); } ret = __posix_acl_chmod(&acl, GFP_KERNEL, mode); if (ret) return ret; ret = inode->i_op->set_acl(idmap, dentry, acl, ACL_TYPE_ACCESS); posix_acl_release(acl); return ret; } EXPORT_SYMBOL(posix_acl_chmod); int posix_acl_create(struct inode *dir, umode_t *mode, struct posix_acl **default_acl, struct posix_acl **acl) { struct posix_acl *p; struct posix_acl *clone; int ret; *acl = NULL; *default_acl = NULL; if (S_ISLNK(*mode) || !IS_POSIXACL(dir)) return 0; p = get_inode_acl(dir, ACL_TYPE_DEFAULT); if (!p || p == ERR_PTR(-EOPNOTSUPP)) { *mode &= ~current_umask(); return 0; } if (IS_ERR(p)) return PTR_ERR(p); ret = -ENOMEM; clone = posix_acl_clone(p, GFP_NOFS); if (!clone) goto err_release; ret = posix_acl_create_masq(clone, mode); if (ret < 0) goto err_release_clone; if (ret == 0) posix_acl_release(clone); else *acl = clone; if (!S_ISDIR(*mode)) posix_acl_release(p); else *default_acl = p; return 0; err_release_clone: posix_acl_release(clone); err_release: posix_acl_release(p); return ret; } EXPORT_SYMBOL_GPL(posix_acl_create); /** * posix_acl_update_mode - update mode in set_acl * @idmap: idmap of the mount @inode was found from * @inode: target inode * @mode_p: mode (pointer) for update * @acl: acl pointer * * Update the file mode when setting an ACL: compute the new file permission * bits based on the ACL. In addition, if the ACL is equivalent to the new * file mode, set *@acl to NULL to indicate that no ACL should be set. * * As with chmod, clear the setgid bit if the caller is not in the owning group * or capable of CAP_FSETID (see inode_change_ok). * * If the inode has been found through an idmapped mount the idmap of * the vfsmount must be passed through @idmap. This function will then * take care to map the inode according to @idmap before checking * permissions. On non-idmapped mounts or if permission checking is to be * performed on the raw inode simply pass @nop_mnt_idmap. * * Called from set_acl inode operations. */ int posix_acl_update_mode(struct mnt_idmap *idmap, struct inode *inode, umode_t *mode_p, struct posix_acl **acl) { umode_t mode = inode->i_mode; int error; error = posix_acl_equiv_mode(*acl, &mode); if (error < 0) return error; if (error == 0) *acl = NULL; if (!in_group_or_capable(idmap, inode, i_gid_into_vfsgid(idmap, inode))) mode &= ~S_ISGID; *mode_p = mode; return 0; } EXPORT_SYMBOL(posix_acl_update_mode); /* * Fix up the uids and gids in posix acl extended attributes in place. */ static int posix_acl_fix_xattr_common(const void *value, size_t size) { const struct posix_acl_xattr_header *header = value; int count; if (!header) return -EINVAL; if (size < sizeof(struct posix_acl_xattr_header)) return -EINVAL; if (header->a_version != cpu_to_le32(POSIX_ACL_XATTR_VERSION)) return -EOPNOTSUPP; count = posix_acl_xattr_count(size); if (count < 0) return -EINVAL; if (count == 0) return 0; return count; } /** * posix_acl_from_xattr - convert POSIX ACLs from backing store to VFS format * @userns: the filesystem's idmapping * @value: the uapi representation of POSIX ACLs * @size: the size of @void * * Filesystems that store POSIX ACLs in the unaltered uapi format should use * posix_acl_from_xattr() when reading them from the backing store and * converting them into the struct posix_acl VFS format. The helper is * specifically intended to be called from the acl inode operation. * * The posix_acl_from_xattr() function will map the raw {g,u}id values stored * in ACL_{GROUP,USER} entries into idmapping in @userns. * * Note that posix_acl_from_xattr() does not take idmapped mounts into account. * If it did it calling it from the get acl inode operation would return POSIX * ACLs mapped according to an idmapped mount which would mean that the value * couldn't be cached for the filesystem. Idmapped mounts are taken into * account on the fly during permission checking or right at the VFS - * userspace boundary before reporting them to the user. * * Return: Allocated struct posix_acl on success, NULL for a valid header but * without actual POSIX ACL entries, or ERR_PTR() encoded error code. */ struct posix_acl *posix_acl_from_xattr(struct user_namespace *userns, const void *value, size_t size) { const struct posix_acl_xattr_header *header = value; const struct posix_acl_xattr_entry *entry = (const void *)(header + 1), *end; int count; struct posix_acl *acl; struct posix_acl_entry *acl_e; count = posix_acl_fix_xattr_common(value, size); if (count < 0) return ERR_PTR(count); if (count == 0) return NULL; acl = posix_acl_alloc(count, GFP_NOFS); if (!acl) return ERR_PTR(-ENOMEM); acl_e = acl->a_entries; for (end = entry + count; entry != end; acl_e++, entry++) { acl_e->e_tag = le16_to_cpu(entry->e_tag); acl_e->e_perm = le16_to_cpu(entry->e_perm); switch(acl_e->e_tag) { case ACL_USER_OBJ: case ACL_GROUP_OBJ: case ACL_MASK: case ACL_OTHER: break; case ACL_USER: acl_e->e_uid = make_kuid(userns, le32_to_cpu(entry->e_id)); if (!uid_valid(acl_e->e_uid)) goto fail; break; case ACL_GROUP: acl_e->e_gid = make_kgid(userns, le32_to_cpu(entry->e_id)); if (!gid_valid(acl_e->e_gid)) goto fail; break; default: goto fail; } } return acl; fail: posix_acl_release(acl); return ERR_PTR(-EINVAL); } EXPORT_SYMBOL (posix_acl_from_xattr); /* * Convert from in-memory to extended attribute representation. */ int posix_acl_to_xattr(struct user_namespace *user_ns, const struct posix_acl *acl, void *buffer, size_t size) { struct posix_acl_xattr_header *ext_acl = buffer; struct posix_acl_xattr_entry *ext_entry; int real_size, n; real_size = posix_acl_xattr_size(acl->a_count); if (!buffer) return real_size; if (real_size > size) return -ERANGE; ext_entry = (void *)(ext_acl + 1); ext_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); for (n=0; n < acl->a_count; n++, ext_entry++) { const struct posix_acl_entry *acl_e = &acl->a_entries[n]; ext_entry->e_tag = cpu_to_le16(acl_e->e_tag); ext_entry->e_perm = cpu_to_le16(acl_e->e_perm); switch(acl_e->e_tag) { case ACL_USER: ext_entry->e_id = cpu_to_le32(from_kuid(user_ns, acl_e->e_uid)); break; case ACL_GROUP: ext_entry->e_id = cpu_to_le32(from_kgid(user_ns, acl_e->e_gid)); break; default: ext_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID); break; } } return real_size; } EXPORT_SYMBOL (posix_acl_to_xattr); /** * vfs_posix_acl_to_xattr - convert from kernel to userspace representation * @idmap: idmap of the mount * @inode: inode the posix acls are set on * @acl: the posix acls as represented by the vfs * @buffer: the buffer into which to convert @acl * @size: size of @buffer * * This converts @acl from the VFS representation in the filesystem idmapping * to the uapi form reportable to userspace. And mount and caller idmappings * are handled appropriately. * * Return: On success, the size of the stored uapi posix acls, on error a * negative errno. */ static ssize_t vfs_posix_acl_to_xattr(struct mnt_idmap *idmap, struct inode *inode, const struct posix_acl *acl, void *buffer, size_t size) { struct posix_acl_xattr_header *ext_acl = buffer; struct posix_acl_xattr_entry *ext_entry; struct user_namespace *fs_userns, *caller_userns; ssize_t real_size, n; vfsuid_t vfsuid; vfsgid_t vfsgid; real_size = posix_acl_xattr_size(acl->a_count); if (!buffer) return real_size; if (real_size > size) return -ERANGE; ext_entry = (void *)(ext_acl + 1); ext_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); fs_userns = i_user_ns(inode); caller_userns = current_user_ns(); for (n=0; n < acl->a_count; n++, ext_entry++) { const struct posix_acl_entry *acl_e = &acl->a_entries[n]; ext_entry->e_tag = cpu_to_le16(acl_e->e_tag); ext_entry->e_perm = cpu_to_le16(acl_e->e_perm); switch(acl_e->e_tag) { case ACL_USER: vfsuid = make_vfsuid(idmap, fs_userns, acl_e->e_uid); ext_entry->e_id = cpu_to_le32(from_kuid( caller_userns, vfsuid_into_kuid(vfsuid))); break; case ACL_GROUP: vfsgid = make_vfsgid(idmap, fs_userns, acl_e->e_gid); ext_entry->e_id = cpu_to_le32(from_kgid( caller_userns, vfsgid_into_kgid(vfsgid))); break; default: ext_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID); break; } } return real_size; } int set_posix_acl(struct mnt_idmap *idmap, struct dentry *dentry, int type, struct posix_acl *acl) { struct inode *inode = d_inode(dentry); if (!IS_POSIXACL(inode)) return -EOPNOTSUPP; if (!inode->i_op->set_acl) return -EOPNOTSUPP; if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) return acl ? -EACCES : 0; if (!inode_owner_or_capable(idmap, inode)) return -EPERM; if (acl) { int ret = posix_acl_valid(inode->i_sb->s_user_ns, acl); if (ret) return ret; } return inode->i_op->set_acl(idmap, dentry, acl, type); } EXPORT_SYMBOL(set_posix_acl); int posix_acl_listxattr(struct inode *inode, char **buffer, ssize_t *remaining_size) { int err; if (!IS_POSIXACL(inode)) return 0; if (inode->i_acl) { err = xattr_list_one(buffer, remaining_size, XATTR_NAME_POSIX_ACL_ACCESS); if (err) return err; } if (inode->i_default_acl) { err = xattr_list_one(buffer, remaining_size, XATTR_NAME_POSIX_ACL_DEFAULT); if (err) return err; } return 0; } static bool posix_acl_xattr_list(struct dentry *dentry) { return IS_POSIXACL(d_backing_inode(dentry)); } /* * nop_posix_acl_access - legacy xattr handler for access POSIX ACLs * * This is the legacy POSIX ACL access xattr handler. It is used by some * filesystems to implement their ->listxattr() inode operation. New code * should never use them. */ const struct xattr_handler nop_posix_acl_access = { .name = XATTR_NAME_POSIX_ACL_ACCESS, .list = posix_acl_xattr_list, }; EXPORT_SYMBOL_GPL(nop_posix_acl_access); /* * nop_posix_acl_default - legacy xattr handler for default POSIX ACLs * * This is the legacy POSIX ACL default xattr handler. It is used by some * filesystems to implement their ->listxattr() inode operation. New code * should never use them. */ const struct xattr_handler nop_posix_acl_default = { .name = XATTR_NAME_POSIX_ACL_DEFAULT, .list = posix_acl_xattr_list, }; EXPORT_SYMBOL_GPL(nop_posix_acl_default); int simple_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, struct posix_acl *acl, int type) { int error; struct inode *inode = d_inode(dentry); if (type == ACL_TYPE_ACCESS) { error = posix_acl_update_mode(idmap, inode, &inode->i_mode, &acl); if (error) return error; } inode_set_ctime_current(inode); if (IS_I_VERSION(inode)) inode_inc_iversion(inode); set_cached_acl(inode, type, acl); return 0; } int simple_acl_create(struct inode *dir, struct inode *inode) { struct posix_acl *default_acl, *acl; int error; error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); if (error) return error; set_cached_acl(inode, ACL_TYPE_DEFAULT, default_acl); set_cached_acl(inode, ACL_TYPE_ACCESS, acl); if (default_acl) posix_acl_release(default_acl); if (acl) posix_acl_release(acl); return 0; } static int vfs_set_acl_idmapped_mnt(struct mnt_idmap *idmap, struct user_namespace *fs_userns, struct posix_acl *acl) { for (int n = 0; n < acl->a_count; n++) { struct posix_acl_entry *acl_e = &acl->a_entries[n]; switch (acl_e->e_tag) { case ACL_USER: acl_e->e_uid = from_vfsuid(idmap, fs_userns, VFSUIDT_INIT(acl_e->e_uid)); break; case ACL_GROUP: acl_e->e_gid = from_vfsgid(idmap, fs_userns, VFSGIDT_INIT(acl_e->e_gid)); break; } } return 0; } /** * vfs_set_acl - set posix acls * @idmap: idmap of the mount * @dentry: the dentry based on which to set the posix acls * @acl_name: the name of the posix acl * @kacl: the posix acls in the appropriate VFS format * * This function sets @kacl. The caller must all posix_acl_release() on @kacl * afterwards. * * Return: On success 0, on error negative errno. */ int vfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name, struct posix_acl *kacl) { int acl_type; int error; struct inode *inode = d_inode(dentry); struct inode *delegated_inode = NULL; acl_type = posix_acl_type(acl_name); if (acl_type < 0) return -EINVAL; if (kacl) { /* * If we're on an idmapped mount translate from mount specific * vfs{g,u}id_t into global filesystem k{g,u}id_t. * Afterwards we can cache the POSIX ACLs filesystem wide and - * if this is a filesystem with a backing store - ultimately * translate them to backing store values. */ error = vfs_set_acl_idmapped_mnt(idmap, i_user_ns(inode), kacl); if (error) return error; } retry_deleg: inode_lock(inode); /* * We only care about restrictions the inode struct itself places upon * us otherwise POSIX ACLs aren't subject to any VFS restrictions. */ error = may_write_xattr(idmap, inode); if (error) goto out_inode_unlock; error = security_inode_set_acl(idmap, dentry, acl_name, kacl); if (error) goto out_inode_unlock; error = try_break_deleg(inode, &delegated_inode); if (error) goto out_inode_unlock; if (likely(!is_bad_inode(inode))) error = set_posix_acl(idmap, dentry, acl_type, kacl); else error = -EIO; if (!error) { fsnotify_xattr(dentry); security_inode_post_set_acl(dentry, acl_name, kacl); } out_inode_unlock: inode_unlock(inode); if (delegated_inode) { error = break_deleg_wait(&delegated_inode); if (!error) goto retry_deleg; } return error; } EXPORT_SYMBOL_GPL(vfs_set_acl); /** * vfs_get_acl - get posix acls * @idmap: idmap of the mount * @dentry: the dentry based on which to retrieve the posix acls * @acl_name: the name of the posix acl * * This function retrieves @kacl from the filesystem. The caller must all * posix_acl_release() on @kacl. * * Return: On success POSIX ACLs in VFS format, on error negative errno. */ struct posix_acl *vfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name) { struct inode *inode = d_inode(dentry); struct posix_acl *acl; int acl_type, error; acl_type = posix_acl_type(acl_name); if (acl_type < 0) return ERR_PTR(-EINVAL); /* * The VFS has no restrictions on reading POSIX ACLs so calling * something like xattr_permission() isn't needed. Only LSMs get a say. */ error = security_inode_get_acl(idmap, dentry, acl_name); if (error) return ERR_PTR(error); if (!IS_POSIXACL(inode)) return ERR_PTR(-EOPNOTSUPP); if (S_ISLNK(inode->i_mode)) return ERR_PTR(-EOPNOTSUPP); acl = __get_acl(idmap, dentry, inode, acl_type); if (IS_ERR(acl)) return acl; if (!acl) return ERR_PTR(-ENODATA); return acl; } EXPORT_SYMBOL_GPL(vfs_get_acl); /** * vfs_remove_acl - remove posix acls * @idmap: idmap of the mount * @dentry: the dentry based on which to retrieve the posix acls * @acl_name: the name of the posix acl * * This function removes posix acls. * * Return: On success 0, on error negative errno. */ int vfs_remove_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name) { int acl_type; int error; struct inode *inode = d_inode(dentry); struct inode *delegated_inode = NULL; acl_type = posix_acl_type(acl_name); if (acl_type < 0) return -EINVAL; retry_deleg: inode_lock(inode); /* * We only care about restrictions the inode struct itself places upon * us otherwise POSIX ACLs aren't subject to any VFS restrictions. */ error = may_write_xattr(idmap, inode); if (error) goto out_inode_unlock; error = security_inode_remove_acl(idmap, dentry, acl_name); if (error) goto out_inode_unlock; error = try_break_deleg(inode, &delegated_inode); if (error) goto out_inode_unlock; if (likely(!is_bad_inode(inode))) error = set_posix_acl(idmap, dentry, acl_type, NULL); else error = -EIO; if (!error) { fsnotify_xattr(dentry); security_inode_post_remove_acl(idmap, dentry, acl_name); } out_inode_unlock: inode_unlock(inode); if (delegated_inode) { error = break_deleg_wait(&delegated_inode); if (!error) goto retry_deleg; } return error; } EXPORT_SYMBOL_GPL(vfs_remove_acl); int do_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name, const void *kvalue, size_t size) { int error; struct posix_acl *acl = NULL; if (size) { /* * Note that posix_acl_from_xattr() uses GFP_NOFS when it * probably doesn't need to here. */ acl = posix_acl_from_xattr(current_user_ns(), kvalue, size); if (IS_ERR(acl)) return PTR_ERR(acl); } error = vfs_set_acl(idmap, dentry, acl_name, acl); posix_acl_release(acl); return error; } ssize_t do_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name, void *kvalue, size_t size) { ssize_t error; struct posix_acl *acl; acl = vfs_get_acl(idmap, dentry, acl_name); if (IS_ERR(acl)) return PTR_ERR(acl); error = vfs_posix_acl_to_xattr(idmap, d_inode(dentry), acl, kvalue, size); posix_acl_release(acl); return error; } |
| 9 4 2 1 9 3 1 4 1 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for ELECOM devices: * - BM084 Bluetooth Mouse * - EX-G Trackballs (M-XT3DRBK, M-XT3URBK, M-XT4DRBK) * - DEFT Trackballs (M-DT1DRBK, M-DT1URBK, M-DT2DRBK, M-DT2URBK) * - HUGE Trackballs (M-HT1DRBK, M-HT1URBK) * * Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com> * Copyright (c) 2016 Yuxuan Shui <yshuiv7@gmail.com> * Copyright (c) 2017 Diego Elio Pettenò <flameeyes@flameeyes.eu> * Copyright (c) 2017 Alex Manoussakis <amanou@gnu.org> * Copyright (c) 2017 Tomasz Kramkowski <tk@the-tk.com> * Copyright (c) 2020 YOSHIOKA Takuma <lo48576@hard-wi.red> * Copyright (c) 2022 Takahiro Fujii <fujii@xaxxi.net> */ /* */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" /* * Certain ELECOM mice misreport their button count meaning that they only work * correctly with the ELECOM mouse assistant software which is unavailable for * Linux. A four extra INPUT reports and a FEATURE report are described by the * report descriptor but it does not appear that these enable software to * control what the extra buttons map to. The only simple and straightforward * solution seems to involve fixing up the report descriptor. */ #define MOUSE_BUTTONS_MAX 8 static void mouse_button_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int rsize, unsigned int button_bit_count, unsigned int padding_bit, unsigned int button_report_size, unsigned int button_usage_maximum, int nbuttons) { if (rsize < 32 || rdesc[button_bit_count] != 0x95 || rdesc[button_report_size] != 0x75 || rdesc[button_report_size + 1] != 0x01 || rdesc[button_usage_maximum] != 0x29 || rdesc[padding_bit] != 0x75) return; hid_info(hdev, "Fixing up Elecom mouse button count\n"); nbuttons = clamp(nbuttons, 0, MOUSE_BUTTONS_MAX); rdesc[button_bit_count + 1] = nbuttons; rdesc[button_usage_maximum + 1] = nbuttons; rdesc[padding_bit + 1] = MOUSE_BUTTONS_MAX - nbuttons; } static const __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { switch (hdev->product) { case USB_DEVICE_ID_ELECOM_BM084: /* The BM084 Bluetooth mouse includes a non-existing horizontal * wheel in the HID descriptor. */ if (*rsize >= 48 && rdesc[46] == 0x05 && rdesc[47] == 0x0c) { hid_info(hdev, "Fixing up Elecom BM084 report descriptor\n"); rdesc[47] = 0x00; } break; case USB_DEVICE_ID_ELECOM_M_XGL20DLBK: /* * Report descriptor format: * 20: button bit count * 28: padding bit count * 22: button report size * 14: button usage maximum */ mouse_button_fixup(hdev, rdesc, *rsize, 20, 28, 22, 14, 8); break; case USB_DEVICE_ID_ELECOM_M_XT3URBK: case USB_DEVICE_ID_ELECOM_M_XT3DRBK: case USB_DEVICE_ID_ELECOM_M_XT4DRBK: /* * Report descriptor format: * 12: button bit count * 30: padding bit count * 14: button report size * 20: button usage maximum */ mouse_button_fixup(hdev, rdesc, *rsize, 12, 30, 14, 20, 6); break; case USB_DEVICE_ID_ELECOM_M_DT1URBK: case USB_DEVICE_ID_ELECOM_M_DT1DRBK: case USB_DEVICE_ID_ELECOM_M_HT1URBK: case USB_DEVICE_ID_ELECOM_M_HT1DRBK_010D: /* * Report descriptor format: * 12: button bit count * 30: padding bit count * 14: button report size * 20: button usage maximum */ mouse_button_fixup(hdev, rdesc, *rsize, 12, 30, 14, 20, 8); break; case USB_DEVICE_ID_ELECOM_M_HT1DRBK_011C: /* * Report descriptor format: * 22: button bit count * 30: padding bit count * 24: button report size * 16: button usage maximum */ mouse_button_fixup(hdev, rdesc, *rsize, 22, 30, 24, 16, 8); break; } return rdesc; } static const struct hid_device_id elecom_devices[] = { { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_XGL20DLBK) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_XT3URBK) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_XT3DRBK) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_XT4DRBK) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_DT1URBK) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_DT1DRBK) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1URBK) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK_010D) }, { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_M_HT1DRBK_011C) }, { } }; MODULE_DEVICE_TABLE(hid, elecom_devices); static struct hid_driver elecom_driver = { .name = "elecom", .id_table = elecom_devices, .report_fixup = elecom_report_fixup }; module_hid_driver(elecom_driver); MODULE_DESCRIPTION("HID driver for ELECOM devices"); MODULE_LICENSE("GPL"); |
| 12 12 12 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 10 9 1 9 2 9 10 6 6 6 1 1 11 12 12 12 12 10 9 8 7 6 13 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 | // 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"); 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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 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 | /* * Copyright (c) 2014 Redpine Signals Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE 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. */ #include <linux/etherdevice.h> #include <linux/timer.h> #include "rsi_mgmt.h" #include "rsi_common.h" #include "rsi_ps.h" #include "rsi_hal.h" static struct bootup_params boot_params_20 = { .magic_number = cpu_to_le16(0x5aa5), .crystal_good_time = 0x0, .valid = cpu_to_le32(VALID_20), .reserved_for_valids = 0x0, .bootup_mode_info = 0x0, .digital_loop_back_params = 0x0, .rtls_timestamp_en = 0x0, .host_spi_intr_cfg = 0x0, .device_clk_info = {{ .pll_config_g = { .tapll_info_g = { .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_20 << 8)| (TA_PLL_M_VAL_20)), .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_20), }, .pll960_info_g = { .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_20 << 8)| (PLL960_N_VAL_20)), .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_20), .pll_reg_3 = 0x0, }, .afepll_info_g = { .pll_reg = cpu_to_le16(0x9f0), } }, .switch_clk_g = { .switch_clk_info = cpu_to_le16(0xb), .bbp_lmac_clk_reg_val = cpu_to_le16(0x111), .umac_clock_reg_config = cpu_to_le16(0x48), .qspi_uart_clock_reg_config = cpu_to_le16(0x1211) } }, { .pll_config_g = { .tapll_info_g = { .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_20 << 8)| (TA_PLL_M_VAL_20)), .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_20), }, .pll960_info_g = { .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_20 << 8)| (PLL960_N_VAL_20)), .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_20), .pll_reg_3 = 0x0, }, .afepll_info_g = { .pll_reg = cpu_to_le16(0x9f0), } }, .switch_clk_g = { .switch_clk_info = 0x0, .bbp_lmac_clk_reg_val = 0x0, .umac_clock_reg_config = 0x0, .qspi_uart_clock_reg_config = 0x0 } }, { .pll_config_g = { .tapll_info_g = { .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_20 << 8)| (TA_PLL_M_VAL_20)), .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_20), }, .pll960_info_g = { .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_20 << 8)| (PLL960_N_VAL_20)), .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_20), .pll_reg_3 = 0x0, }, .afepll_info_g = { .pll_reg = cpu_to_le16(0x9f0), } }, .switch_clk_g = { .switch_clk_info = 0x0, .bbp_lmac_clk_reg_val = 0x0, .umac_clock_reg_config = 0x0, .qspi_uart_clock_reg_config = 0x0 } } }, .buckboost_wakeup_cnt = 0x0, .pmu_wakeup_wait = 0x0, .shutdown_wait_time = 0x0, .pmu_slp_clkout_sel = 0x0, .wdt_prog_value = 0x0, .wdt_soc_rst_delay = 0x0, .dcdc_operation_mode = 0x0, .soc_reset_wait_cnt = 0x0, .waiting_time_at_fresh_sleep = 0x0, .max_threshold_to_avoid_sleep = 0x0, .beacon_resedue_alg_en = 0, }; static struct bootup_params boot_params_40 = { .magic_number = cpu_to_le16(0x5aa5), .crystal_good_time = 0x0, .valid = cpu_to_le32(VALID_40), .reserved_for_valids = 0x0, .bootup_mode_info = 0x0, .digital_loop_back_params = 0x0, .rtls_timestamp_en = 0x0, .host_spi_intr_cfg = 0x0, .device_clk_info = {{ .pll_config_g = { .tapll_info_g = { .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_40 << 8)| (TA_PLL_M_VAL_40)), .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_40), }, .pll960_info_g = { .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_40 << 8)| (PLL960_N_VAL_40)), .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_40), .pll_reg_3 = 0x0, }, .afepll_info_g = { .pll_reg = cpu_to_le16(0x9f0), } }, .switch_clk_g = { .switch_clk_info = cpu_to_le16(0x09), .bbp_lmac_clk_reg_val = cpu_to_le16(0x1121), .umac_clock_reg_config = cpu_to_le16(0x48), .qspi_uart_clock_reg_config = cpu_to_le16(0x1211) } }, { .pll_config_g = { .tapll_info_g = { .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_40 << 8)| (TA_PLL_M_VAL_40)), .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_40), }, .pll960_info_g = { .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_40 << 8)| (PLL960_N_VAL_40)), .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_40), .pll_reg_3 = 0x0, }, .afepll_info_g = { .pll_reg = cpu_to_le16(0x9f0), } }, .switch_clk_g = { .switch_clk_info = 0x0, .bbp_lmac_clk_reg_val = 0x0, .umac_clock_reg_config = 0x0, .qspi_uart_clock_reg_config = 0x0 } }, { .pll_config_g = { .tapll_info_g = { .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_40 << 8)| (TA_PLL_M_VAL_40)), .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_40), }, .pll960_info_g = { .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_40 << 8)| (PLL960_N_VAL_40)), .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_40), .pll_reg_3 = 0x0, }, .afepll_info_g = { .pll_reg = cpu_to_le16(0x9f0), } }, .switch_clk_g = { .switch_clk_info = 0x0, .bbp_lmac_clk_reg_val = 0x0, .umac_clock_reg_config = 0x0, .qspi_uart_clock_reg_config = 0x0 } } }, .buckboost_wakeup_cnt = 0x0, .pmu_wakeup_wait = 0x0, .shutdown_wait_time = 0x0, .pmu_slp_clkout_sel = 0x0, .wdt_prog_value = 0x0, .wdt_soc_rst_delay = 0x0, .dcdc_operation_mode = 0x0, .soc_reset_wait_cnt = 0x0, .waiting_time_at_fresh_sleep = 0x0, .max_threshold_to_avoid_sleep = 0x0, .beacon_resedue_alg_en = 0, }; static struct bootup_params_9116 boot_params_9116_20 = { .magic_number = cpu_to_le16(LOADED_TOKEN), .valid = cpu_to_le32(VALID_20), .device_clk_info_9116 = {{ .pll_config_9116_g = { .pll_ctrl_set_reg = cpu_to_le16(0xd518), .pll_ctrl_clr_reg = cpu_to_le16(0x2ae7), .pll_modem_conig_reg = cpu_to_le16(0x2000), .soc_clk_config_reg = cpu_to_le16(0x0c18), .adc_dac_strm1_config_reg = cpu_to_le16(0x1100), .adc_dac_strm2_config_reg = cpu_to_le16(0x6600), }, .switch_clk_9116_g = { .switch_clk_info = cpu_to_le32((RSI_SWITCH_TASS_CLK | RSI_SWITCH_WLAN_BBP_LMAC_CLK_REG | RSI_SWITCH_BBP_LMAC_CLK_REG)), .tass_clock_reg = cpu_to_le32(0x083C0503), .wlan_bbp_lmac_clk_reg_val = cpu_to_le32(0x01042001), .zbbt_bbp_lmac_clk_reg_val = cpu_to_le32(0x02010001), .bbp_lmac_clk_en_val = cpu_to_le32(0x0000003b), } }, }, }; static struct bootup_params_9116 boot_params_9116_40 = { .magic_number = cpu_to_le16(LOADED_TOKEN), .valid = cpu_to_le32(VALID_40), .device_clk_info_9116 = {{ .pll_config_9116_g = { .pll_ctrl_set_reg = cpu_to_le16(0xd518), .pll_ctrl_clr_reg = cpu_to_le16(0x2ae7), .pll_modem_conig_reg = cpu_to_le16(0x3000), .soc_clk_config_reg = cpu_to_le16(0x0c18), .adc_dac_strm1_config_reg = cpu_to_le16(0x0000), .adc_dac_strm2_config_reg = cpu_to_le16(0x6600), }, .switch_clk_9116_g = { .switch_clk_info = cpu_to_le32((RSI_SWITCH_TASS_CLK | RSI_SWITCH_WLAN_BBP_LMAC_CLK_REG | RSI_SWITCH_BBP_LMAC_CLK_REG | RSI_MODEM_CLK_160MHZ)), .tass_clock_reg = cpu_to_le32(0x083C0503), .wlan_bbp_lmac_clk_reg_val = cpu_to_le32(0x01042002), .zbbt_bbp_lmac_clk_reg_val = cpu_to_le32(0x04010002), .bbp_lmac_clk_en_val = cpu_to_le32(0x0000003b), } }, }, }; static u16 mcs[] = {13, 26, 39, 52, 78, 104, 117, 130}; /** * rsi_set_default_parameters() - This function sets default parameters. * @common: Pointer to the driver private structure. * * Return: none */ static void rsi_set_default_parameters(struct rsi_common *common) { common->band = NL80211_BAND_2GHZ; common->channel_width = BW_20MHZ; common->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; common->channel = 1; memset(&common->rate_config, 0, sizeof(common->rate_config)); common->fsm_state = FSM_CARD_NOT_READY; common->iface_down = true; common->endpoint = EP_2GHZ_20MHZ; common->driver_mode = 1; /* End to end mode */ common->lp_ps_handshake_mode = 0; /* Default no handShake mode*/ common->ulp_ps_handshake_mode = 2; /* Default PKT handShake mode*/ common->rf_power_val = 0; /* Default 1.9V */ common->wlan_rf_power_mode = 0; common->obm_ant_sel_val = 2; common->beacon_interval = RSI_BEACON_INTERVAL; common->dtim_cnt = RSI_DTIM_COUNT; common->w9116_features.pll_mode = 0x0; common->w9116_features.rf_type = 1; common->w9116_features.wireless_mode = 0; common->w9116_features.enable_ppe = 0; common->w9116_features.afe_type = 1; common->w9116_features.dpd = 0; common->w9116_features.sifs_tx_enable = 0; common->w9116_features.ps_options = 0; } void init_bgscan_params(struct rsi_common *common) { memset((u8 *)&common->bgscan, 0, sizeof(struct rsi_bgscan_params)); common->bgscan.bgscan_threshold = RSI_DEF_BGSCAN_THRLD; common->bgscan.roam_threshold = RSI_DEF_ROAM_THRLD; common->bgscan.bgscan_periodicity = RSI_BGSCAN_PERIODICITY; common->bgscan.num_bgscan_channels = 0; common->bgscan.two_probe = 1; common->bgscan.active_scan_duration = RSI_ACTIVE_SCAN_TIME; common->bgscan.passive_scan_duration = RSI_PASSIVE_SCAN_TIME; } /** * rsi_set_contention_vals() - This function sets the contention values for the * backoff procedure. * @common: Pointer to the driver private structure. * * Return: None. */ static void rsi_set_contention_vals(struct rsi_common *common) { u8 ii = 0; for (; ii < NUM_EDCA_QUEUES; ii++) { common->tx_qinfo[ii].wme_params = (((common->edca_params[ii].cw_min / 2) + (common->edca_params[ii].aifs)) * WMM_SHORT_SLOT_TIME + SIFS_DURATION); common->tx_qinfo[ii].weight = common->tx_qinfo[ii].wme_params; common->tx_qinfo[ii].pkt_contended = 0; } } /** * rsi_send_internal_mgmt_frame() - This function sends management frames to * firmware.Also schedules packet to queue * for transmission. * @common: Pointer to the driver private structure. * @skb: Pointer to the socket buffer structure. * * Return: 0 on success, -1 on failure. */ static int rsi_send_internal_mgmt_frame(struct rsi_common *common, struct sk_buff *skb) { struct skb_info *tx_params; struct rsi_cmd_desc *desc; if (skb == NULL) { rsi_dbg(ERR_ZONE, "%s: Unable to allocate skb\n", __func__); return -ENOMEM; } desc = (struct rsi_cmd_desc *)skb->data; desc->desc_dword0.len_qno |= cpu_to_le16(DESC_IMMEDIATE_WAKEUP); skb->priority = MGMT_SOFT_Q; tx_params = (struct skb_info *)&IEEE80211_SKB_CB(skb)->driver_data; tx_params->flags |= INTERNAL_MGMT_PKT; skb_queue_tail(&common->tx_queue[MGMT_SOFT_Q], skb); rsi_set_event(&common->tx_thread.event); return 0; } /** * rsi_load_radio_caps() - This function is used to send radio capabilities * values to firmware. * @common: Pointer to the driver private structure. * * Return: 0 on success, corresponding negative error code on failure. */ static int rsi_load_radio_caps(struct rsi_common *common) { struct rsi_radio_caps *radio_caps; struct rsi_hw *adapter = common->priv; u16 inx = 0; u8 ii; u8 radio_id = 0; u16 gc[20] = {0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0}; struct sk_buff *skb; u16 frame_len = sizeof(struct rsi_radio_caps); rsi_dbg(INFO_ZONE, "%s: Sending rate symbol req frame\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); radio_caps = (struct rsi_radio_caps *)skb->data; radio_caps->desc_dword0.frame_type = RADIO_CAPABILITIES; radio_caps->channel_num = common->channel; radio_caps->rf_model = RSI_RF_TYPE; radio_caps->radio_cfg_info = RSI_LMAC_CLOCK_80MHZ; if (common->channel_width == BW_40MHZ) { radio_caps->radio_cfg_info |= RSI_ENABLE_40MHZ; if (common->fsm_state == FSM_MAC_INIT_DONE) { struct ieee80211_hw *hw = adapter->hw; struct ieee80211_conf *conf = &hw->conf; if (conf_is_ht40_plus(conf)) { radio_caps->ppe_ack_rate = cpu_to_le16(LOWER_20_ENABLE | (LOWER_20_ENABLE >> 12)); } else if (conf_is_ht40_minus(conf)) { radio_caps->ppe_ack_rate = cpu_to_le16(UPPER_20_ENABLE | (UPPER_20_ENABLE >> 12)); } else { radio_caps->ppe_ack_rate = cpu_to_le16((BW_40MHZ << 12) | FULL40M_ENABLE); } } } radio_caps->radio_info |= radio_id; if (adapter->device_model == RSI_DEV_9116 && common->channel_width == BW_20MHZ) radio_caps->radio_cfg_info &= ~0x3; radio_caps->sifs_tx_11n = cpu_to_le16(SIFS_TX_11N_VALUE); radio_caps->sifs_tx_11b = cpu_to_le16(SIFS_TX_11B_VALUE); radio_caps->slot_rx_11n = cpu_to_le16(SHORT_SLOT_VALUE); radio_caps->ofdm_ack_tout = cpu_to_le16(OFDM_ACK_TOUT_VALUE); radio_caps->cck_ack_tout = cpu_to_le16(CCK_ACK_TOUT_VALUE); radio_caps->preamble_type = cpu_to_le16(LONG_PREAMBLE); for (ii = 0; ii < MAX_HW_QUEUES; ii++) { radio_caps->qos_params[ii].cont_win_min_q = cpu_to_le16(3); radio_caps->qos_params[ii].cont_win_max_q = cpu_to_le16(0x3f); radio_caps->qos_params[ii].aifsn_val_q = cpu_to_le16(2); radio_caps->qos_params[ii].txop_q = 0; } for (ii = 0; ii < NUM_EDCA_QUEUES; ii++) { if (common->edca_params[ii].cw_max > 0) { radio_caps->qos_params[ii].cont_win_min_q = cpu_to_le16(common->edca_params[ii].cw_min); radio_caps->qos_params[ii].cont_win_max_q = cpu_to_le16(common->edca_params[ii].cw_max); radio_caps->qos_params[ii].aifsn_val_q = cpu_to_le16(common->edca_params[ii].aifs << 8); radio_caps->qos_params[ii].txop_q = cpu_to_le16(common->edca_params[ii].txop); } } radio_caps->qos_params[BROADCAST_HW_Q].txop_q = cpu_to_le16(0xffff); radio_caps->qos_params[MGMT_HW_Q].txop_q = 0; radio_caps->qos_params[BEACON_HW_Q].txop_q = cpu_to_le16(0xffff); memcpy(&common->rate_pwr[0], &gc[0], 40); for (ii = 0; ii < 20; ii++) radio_caps->gcpd_per_rate[inx++] = cpu_to_le16(common->rate_pwr[ii] & 0x00FF); rsi_set_len_qno(&radio_caps->desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_mgmt_pkt_to_core() - This function is the entry point for Mgmt module. * @common: Pointer to the driver private structure. * @msg: Pointer to received packet. * @msg_len: Length of the received packet. * * Return: 0 on success, -1 on failure. */ static int rsi_mgmt_pkt_to_core(struct rsi_common *common, u8 *msg, s32 msg_len) { struct rsi_hw *adapter = common->priv; struct ieee80211_tx_info *info; struct skb_info *rx_params; u8 pad_bytes = msg[4]; struct sk_buff *skb; if (!adapter->sc_nvifs) return -ENOLINK; msg_len -= pad_bytes; if (msg_len <= 0) { rsi_dbg(MGMT_RX_ZONE, "%s: Invalid rx msg of len = %d\n", __func__, msg_len); return -EINVAL; } skb = dev_alloc_skb(msg_len); if (!skb) return -ENOMEM; skb_put_data(skb, (u8 *)(msg + FRAME_DESC_SZ + pad_bytes), msg_len); info = IEEE80211_SKB_CB(skb); rx_params = (struct skb_info *)info->driver_data; rx_params->rssi = rsi_get_rssi(msg); rx_params->channel = rsi_get_channel(msg); rsi_indicate_pkt_to_os(common, skb); return 0; } /** * rsi_hal_send_sta_notify_frame() - This function sends the station notify * frame to firmware. * @common: Pointer to the driver private structure. * @opmode: Operating mode of device. * @notify_event: Notification about station connection. * @bssid: bssid. * @qos_enable: Qos is enabled. * @aid: Aid (unique for all STA). * @sta_id: station id. * @vif: Pointer to the ieee80211_vif structure. * * Return: status: 0 on success, corresponding negative error code on failure. */ int rsi_hal_send_sta_notify_frame(struct rsi_common *common, enum opmode opmode, u8 notify_event, const unsigned char *bssid, u8 qos_enable, u16 aid, u16 sta_id, struct ieee80211_vif *vif) { struct sk_buff *skb = NULL; struct rsi_peer_notify *peer_notify; u16 vap_id = ((struct vif_priv *)vif->drv_priv)->vap_id; int status; u16 frame_len = sizeof(struct rsi_peer_notify); rsi_dbg(MGMT_TX_ZONE, "%s: Sending sta notify frame\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); peer_notify = (struct rsi_peer_notify *)skb->data; if (opmode == RSI_OPMODE_STA) peer_notify->command = cpu_to_le16(PEER_TYPE_AP << 1); else if (opmode == RSI_OPMODE_AP) peer_notify->command = cpu_to_le16(PEER_TYPE_STA << 1); switch (notify_event) { case STA_CONNECTED: peer_notify->command |= cpu_to_le16(RSI_ADD_PEER); break; case STA_DISCONNECTED: peer_notify->command |= cpu_to_le16(RSI_DELETE_PEER); break; default: break; } peer_notify->command |= cpu_to_le16((aid & 0xfff) << 4); ether_addr_copy(peer_notify->mac_addr, bssid); peer_notify->mpdu_density = cpu_to_le16(RSI_MPDU_DENSITY); peer_notify->sta_flags = cpu_to_le32((qos_enable) ? 1 : 0); rsi_set_len_qno(&peer_notify->desc.desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); peer_notify->desc.desc_dword0.frame_type = PEER_NOTIFY; peer_notify->desc.desc_dword3.qid_tid = sta_id; peer_notify->desc.desc_dword3.sta_id = vap_id; skb_put(skb, frame_len); status = rsi_send_internal_mgmt_frame(common, skb); if ((vif->type == NL80211_IFTYPE_STATION) && (!status && qos_enable)) { rsi_set_contention_vals(common); status = rsi_load_radio_caps(common); } return status; } /** * rsi_send_aggregation_params_frame() - This function sends the ampdu * indication frame to firmware. * @common: Pointer to the driver private structure. * @tid: traffic identifier. * @ssn: ssn. * @buf_size: buffer size. * @event: notification about station connection. * @sta_id: station id. * * Return: 0 on success, corresponding negative error code on failure. */ int rsi_send_aggregation_params_frame(struct rsi_common *common, u16 tid, u16 ssn, u8 buf_size, u8 event, u8 sta_id) { struct sk_buff *skb = NULL; struct rsi_aggr_params *aggr_params; u16 frame_len = sizeof(struct rsi_aggr_params); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); aggr_params = (struct rsi_aggr_params *)skb->data; rsi_dbg(MGMT_TX_ZONE, "%s: Sending AMPDU indication frame\n", __func__); rsi_set_len_qno(&aggr_params->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q); aggr_params->desc_dword0.frame_type = AMPDU_IND; aggr_params->aggr_params = tid & RSI_AGGR_PARAMS_TID_MASK; aggr_params->peer_id = sta_id; if (event == STA_TX_ADDBA_DONE) { aggr_params->seq_start = cpu_to_le16(ssn); aggr_params->baw_size = cpu_to_le16(buf_size); aggr_params->aggr_params |= RSI_AGGR_PARAMS_START; } else if (event == STA_RX_ADDBA_DONE) { aggr_params->seq_start = cpu_to_le16(ssn); aggr_params->aggr_params |= (RSI_AGGR_PARAMS_START | RSI_AGGR_PARAMS_RX_AGGR); } else if (event == STA_RX_DELBA) { aggr_params->aggr_params |= RSI_AGGR_PARAMS_RX_AGGR; } skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_program_bb_rf() - This function starts base band and RF programming. * This is called after initial configurations are done. * @common: Pointer to the driver private structure. * * Return: 0 on success, corresponding negative error code on failure. */ static int rsi_program_bb_rf(struct rsi_common *common) { struct sk_buff *skb; struct rsi_bb_rf_prog *bb_rf_prog; u16 frame_len = sizeof(struct rsi_bb_rf_prog); rsi_dbg(MGMT_TX_ZONE, "%s: Sending program BB/RF frame\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); bb_rf_prog = (struct rsi_bb_rf_prog *)skb->data; rsi_set_len_qno(&bb_rf_prog->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q); bb_rf_prog->desc_dword0.frame_type = BBP_PROG_IN_TA; bb_rf_prog->endpoint = common->endpoint; bb_rf_prog->rf_power_mode = common->wlan_rf_power_mode; if (common->rf_reset) { bb_rf_prog->flags = cpu_to_le16(RF_RESET_ENABLE); rsi_dbg(MGMT_TX_ZONE, "%s: ===> RF RESET REQUEST SENT <===\n", __func__); common->rf_reset = 0; } common->bb_rf_prog_count = 1; bb_rf_prog->flags |= cpu_to_le16(PUT_BBP_RESET | BBP_REG_WRITE | (RSI_RF_TYPE << 4)); skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_set_vap_capabilities() - This function send vap capability to firmware. * @common: Pointer to the driver private structure. * @mode: Operating mode of device. * @mac_addr: MAC address * @vap_id: Rate information - offset and mask * @vap_status: VAP status - ADD, DELETE or UPDATE * * Return: 0 on success, corresponding negative error code on failure. */ int rsi_set_vap_capabilities(struct rsi_common *common, enum opmode mode, u8 *mac_addr, u8 vap_id, u8 vap_status) { struct sk_buff *skb = NULL; struct rsi_vap_caps *vap_caps; struct rsi_hw *adapter = common->priv; struct ieee80211_hw *hw = adapter->hw; struct ieee80211_conf *conf = &hw->conf; u16 frame_len = sizeof(struct rsi_vap_caps); rsi_dbg(MGMT_TX_ZONE, "%s: Sending VAP capabilities frame\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); vap_caps = (struct rsi_vap_caps *)skb->data; rsi_set_len_qno(&vap_caps->desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); vap_caps->desc_dword0.frame_type = VAP_CAPABILITIES; vap_caps->status = vap_status; vap_caps->vif_type = mode; vap_caps->channel_bw = common->channel_width; vap_caps->vap_id = vap_id; vap_caps->radioid_macid = ((common->mac_id & 0xf) << 4) | (common->radio_id & 0xf); memcpy(vap_caps->mac_addr, mac_addr, IEEE80211_ADDR_LEN); vap_caps->keep_alive_period = cpu_to_le16(90); vap_caps->frag_threshold = cpu_to_le16(IEEE80211_MAX_FRAG_THRESHOLD); vap_caps->rts_threshold = cpu_to_le16(common->rts_threshold); if (common->band == NL80211_BAND_5GHZ) { vap_caps->default_ctrl_rate = cpu_to_le16(RSI_RATE_6); vap_caps->default_mgmt_rate = cpu_to_le32(RSI_RATE_6); } else { vap_caps->default_ctrl_rate = cpu_to_le16(RSI_RATE_1); vap_caps->default_mgmt_rate = cpu_to_le32(RSI_RATE_1); } if (conf_is_ht40(conf)) { if (conf_is_ht40_minus(conf)) vap_caps->ctrl_rate_flags = cpu_to_le16(UPPER_20_ENABLE); else if (conf_is_ht40_plus(conf)) vap_caps->ctrl_rate_flags = cpu_to_le16(LOWER_20_ENABLE); else vap_caps->ctrl_rate_flags = cpu_to_le16(FULL40M_ENABLE); } vap_caps->default_data_rate = 0; vap_caps->beacon_interval = cpu_to_le16(common->beacon_interval); vap_caps->dtim_period = cpu_to_le16(common->dtim_cnt); skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_hal_load_key() - This function is used to load keys within the firmware. * @common: Pointer to the driver private structure. * @data: Pointer to the key data. * @key_len: Key length to be loaded. * @key_type: Type of key: GROUP/PAIRWISE. * @key_id: Key index. * @cipher: Type of cipher used. * @sta_id: Station id. * @vif: Pointer to the ieee80211_vif structure. * * Return: 0 on success, -1 on failure. */ int rsi_hal_load_key(struct rsi_common *common, u8 *data, u16 key_len, u8 key_type, u8 key_id, u32 cipher, s16 sta_id, struct ieee80211_vif *vif) { struct sk_buff *skb = NULL; struct rsi_set_key *set_key; u16 key_descriptor = 0; u16 frame_len = sizeof(struct rsi_set_key); rsi_dbg(MGMT_TX_ZONE, "%s: Sending load key frame\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); set_key = (struct rsi_set_key *)skb->data; if (key_type == RSI_GROUP_KEY) { key_descriptor = RSI_KEY_TYPE_BROADCAST; if (vif->type == NL80211_IFTYPE_AP) key_descriptor |= RSI_KEY_MODE_AP; } if ((cipher == WLAN_CIPHER_SUITE_WEP40) || (cipher == WLAN_CIPHER_SUITE_WEP104)) { key_id = 0; key_descriptor |= RSI_WEP_KEY; if (key_len >= 13) key_descriptor |= RSI_WEP_KEY_104; } else if (cipher != KEY_TYPE_CLEAR) { key_descriptor |= RSI_CIPHER_WPA; if (cipher == WLAN_CIPHER_SUITE_TKIP) key_descriptor |= RSI_CIPHER_TKIP; } key_descriptor |= RSI_PROTECT_DATA_FRAMES; key_descriptor |= (key_id << RSI_KEY_ID_OFFSET); rsi_set_len_qno(&set_key->desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); set_key->desc_dword0.frame_type = SET_KEY_REQ; set_key->key_desc = cpu_to_le16(key_descriptor); set_key->sta_id = sta_id; if (data) { if ((cipher == WLAN_CIPHER_SUITE_WEP40) || (cipher == WLAN_CIPHER_SUITE_WEP104)) { memcpy(&set_key->key[key_id][1], data, key_len * 2); } else { memcpy(&set_key->key[0][0], data, key_len); } memcpy(set_key->tx_mic_key, &data[16], 8); memcpy(set_key->rx_mic_key, &data[24], 8); } else { memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ); } skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /* * This function sends the common device configuration parameters to device. * This frame includes the useful information to make device works on * specific operating mode. */ static int rsi_send_common_dev_params(struct rsi_common *common) { struct sk_buff *skb; u16 frame_len; struct rsi_config_vals *dev_cfgs; frame_len = sizeof(struct rsi_config_vals); rsi_dbg(MGMT_TX_ZONE, "Sending common device config params\n"); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Unable to allocate skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); dev_cfgs = (struct rsi_config_vals *)skb->data; memset(dev_cfgs, 0, (sizeof(struct rsi_config_vals))); rsi_set_len_qno(&dev_cfgs->len_qno, (frame_len - FRAME_DESC_SZ), RSI_COEX_Q); dev_cfgs->pkt_type = COMMON_DEV_CONFIG; dev_cfgs->lp_ps_handshake = common->lp_ps_handshake_mode; dev_cfgs->ulp_ps_handshake = common->ulp_ps_handshake_mode; dev_cfgs->unused_ulp_gpio = RSI_UNUSED_ULP_GPIO_BITMAP; dev_cfgs->unused_soc_gpio_bitmap = cpu_to_le32(RSI_UNUSED_SOC_GPIO_BITMAP); dev_cfgs->opermode = common->oper_mode; dev_cfgs->wlan_rf_pwr_mode = common->wlan_rf_power_mode; dev_cfgs->driver_mode = common->driver_mode; dev_cfgs->region_code = NL80211_DFS_FCC; dev_cfgs->antenna_sel_val = common->obm_ant_sel_val; skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /* * rsi_load_bootup_params() - This function send bootup params to the firmware. * @common: Pointer to the driver private structure. * * Return: 0 on success, corresponding error code on failure. */ static int rsi_load_bootup_params(struct rsi_common *common) { struct sk_buff *skb; struct rsi_boot_params *boot_params; rsi_dbg(MGMT_TX_ZONE, "%s: Sending boot params frame\n", __func__); skb = dev_alloc_skb(sizeof(struct rsi_boot_params)); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, sizeof(struct rsi_boot_params)); boot_params = (struct rsi_boot_params *)skb->data; rsi_dbg(MGMT_TX_ZONE, "%s:\n", __func__); if (common->channel_width == BW_40MHZ) { memcpy(&boot_params->bootup_params, &boot_params_40, sizeof(struct bootup_params)); rsi_dbg(MGMT_TX_ZONE, "%s: Packet 40MHZ <=== %d\n", __func__, UMAC_CLK_40BW); boot_params->desc_word[7] = cpu_to_le16(UMAC_CLK_40BW); } else { memcpy(&boot_params->bootup_params, &boot_params_20, sizeof(struct bootup_params)); if (boot_params_20.valid != cpu_to_le32(VALID_20)) { boot_params->desc_word[7] = cpu_to_le16(UMAC_CLK_20BW); rsi_dbg(MGMT_TX_ZONE, "%s: Packet 20MHZ <=== %d\n", __func__, UMAC_CLK_20BW); } else { boot_params->desc_word[7] = cpu_to_le16(UMAC_CLK_40MHZ); rsi_dbg(MGMT_TX_ZONE, "%s: Packet 20MHZ <=== %d\n", __func__, UMAC_CLK_40MHZ); } } /** * Bit{0:11} indicates length of the Packet * Bit{12:15} indicates host queue number */ boot_params->desc_word[0] = cpu_to_le16(sizeof(struct bootup_params) | (RSI_WIFI_MGMT_Q << 12)); boot_params->desc_word[1] = cpu_to_le16(BOOTUP_PARAMS_REQUEST); skb_put(skb, sizeof(struct rsi_boot_params)); return rsi_send_internal_mgmt_frame(common, skb); } static int rsi_load_9116_bootup_params(struct rsi_common *common) { struct sk_buff *skb; struct rsi_boot_params_9116 *boot_params; rsi_dbg(MGMT_TX_ZONE, "%s: Sending boot params frame\n", __func__); skb = dev_alloc_skb(sizeof(struct rsi_boot_params_9116)); if (!skb) return -ENOMEM; memset(skb->data, 0, sizeof(struct rsi_boot_params)); boot_params = (struct rsi_boot_params_9116 *)skb->data; if (common->channel_width == BW_40MHZ) { memcpy(&boot_params->bootup_params, &boot_params_9116_40, sizeof(struct bootup_params_9116)); rsi_dbg(MGMT_TX_ZONE, "%s: Packet 40MHZ <=== %d\n", __func__, UMAC_CLK_40BW); boot_params->umac_clk = cpu_to_le16(UMAC_CLK_40BW); } else { memcpy(&boot_params->bootup_params, &boot_params_9116_20, sizeof(struct bootup_params_9116)); if (boot_params_20.valid != cpu_to_le32(VALID_20)) { boot_params->umac_clk = cpu_to_le16(UMAC_CLK_20BW); rsi_dbg(MGMT_TX_ZONE, "%s: Packet 20MHZ <=== %d\n", __func__, UMAC_CLK_20BW); } else { boot_params->umac_clk = cpu_to_le16(UMAC_CLK_40MHZ); rsi_dbg(MGMT_TX_ZONE, "%s: Packet 20MHZ <=== %d\n", __func__, UMAC_CLK_40MHZ); } } rsi_set_len_qno(&boot_params->desc_dword0.len_qno, sizeof(struct bootup_params_9116), RSI_WIFI_MGMT_Q); boot_params->desc_dword0.frame_type = BOOTUP_PARAMS_REQUEST; skb_put(skb, sizeof(struct rsi_boot_params_9116)); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_send_reset_mac() - This function prepares reset MAC request and sends an * internal management frame to indicate it to firmware. * @common: Pointer to the driver private structure. * * Return: 0 on success, corresponding error code on failure. */ static int rsi_send_reset_mac(struct rsi_common *common) { struct sk_buff *skb; struct rsi_mac_frame *mgmt_frame; rsi_dbg(MGMT_TX_ZONE, "%s: Sending reset MAC frame\n", __func__); skb = dev_alloc_skb(FRAME_DESC_SZ); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, FRAME_DESC_SZ); mgmt_frame = (struct rsi_mac_frame *)skb->data; mgmt_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12); mgmt_frame->desc_word[1] = cpu_to_le16(RESET_MAC_REQ); mgmt_frame->desc_word[4] = cpu_to_le16(RETRY_COUNT << 8); #define RSI_9116_DEF_TA_AGGR 3 if (common->priv->device_model == RSI_DEV_9116) mgmt_frame->desc_word[3] |= cpu_to_le16(RSI_9116_DEF_TA_AGGR << 8); skb_put(skb, FRAME_DESC_SZ); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_band_check() - This function programs the band * @common: Pointer to the driver private structure. * @curchan: Pointer to the current channel structure. * * Return: 0 on success, corresponding error code on failure. */ int rsi_band_check(struct rsi_common *common, struct ieee80211_channel *curchan) { struct rsi_hw *adapter = common->priv; struct ieee80211_hw *hw = adapter->hw; u8 prev_bw = common->channel_width; u8 prev_ep = common->endpoint; int status = 0; if (common->band != curchan->band) { common->rf_reset = 1; common->band = curchan->band; } if ((hw->conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) || (hw->conf.chandef.width == NL80211_CHAN_WIDTH_20)) common->channel_width = BW_20MHZ; else common->channel_width = BW_40MHZ; if (common->band == NL80211_BAND_2GHZ) { if (common->channel_width) common->endpoint = EP_2GHZ_40MHZ; else common->endpoint = EP_2GHZ_20MHZ; } else { if (common->channel_width) common->endpoint = EP_5GHZ_40MHZ; else common->endpoint = EP_5GHZ_20MHZ; } if (common->endpoint != prev_ep) { status = rsi_program_bb_rf(common); if (status) return status; } if (common->channel_width != prev_bw) { if (adapter->device_model == RSI_DEV_9116) status = rsi_load_9116_bootup_params(common); else status = rsi_load_bootup_params(common); if (status) return status; status = rsi_load_radio_caps(common); if (status) return status; } return status; } /** * rsi_set_channel() - This function programs the channel. * @common: Pointer to the driver private structure. * @channel: Channel value to be set. * * Return: 0 on success, corresponding error code on failure. */ int rsi_set_channel(struct rsi_common *common, struct ieee80211_channel *channel) { struct sk_buff *skb = NULL; struct rsi_chan_config *chan_cfg; u16 frame_len = sizeof(struct rsi_chan_config); rsi_dbg(MGMT_TX_ZONE, "%s: Sending scan req frame\n", __func__); if (!channel) return 0; skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); chan_cfg = (struct rsi_chan_config *)skb->data; rsi_set_len_qno(&chan_cfg->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q); chan_cfg->desc_dword0.frame_type = SCAN_REQUEST; chan_cfg->channel_number = channel->hw_value; chan_cfg->antenna_gain_offset_2g = channel->max_antenna_gain; chan_cfg->antenna_gain_offset_5g = channel->max_antenna_gain; chan_cfg->region_rftype = (RSI_RF_TYPE & 0xf) << 4; if ((channel->flags & IEEE80211_CHAN_NO_IR) || (channel->flags & IEEE80211_CHAN_RADAR)) { chan_cfg->antenna_gain_offset_2g |= RSI_CHAN_RADAR; } else { if (common->tx_power < channel->max_power) chan_cfg->tx_power = cpu_to_le16(common->tx_power); else chan_cfg->tx_power = cpu_to_le16(channel->max_power); } chan_cfg->region_rftype |= (common->priv->dfs_region & 0xf); if (common->channel_width == BW_40MHZ) chan_cfg->channel_width = 0x1; common->channel = channel->hw_value; skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_send_radio_params_update() - This function sends the radio * parameters update to device * @common: Pointer to the driver private structure. * * Return: 0 on success, corresponding error code on failure. */ int rsi_send_radio_params_update(struct rsi_common *common) { struct rsi_mac_frame *cmd_frame; struct sk_buff *skb = NULL; rsi_dbg(MGMT_TX_ZONE, "%s: Sending Radio Params update frame\n", __func__); skb = dev_alloc_skb(FRAME_DESC_SZ); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, FRAME_DESC_SZ); cmd_frame = (struct rsi_mac_frame *)skb->data; cmd_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12); cmd_frame->desc_word[1] = cpu_to_le16(RADIO_PARAMS_UPDATE); cmd_frame->desc_word[3] = cpu_to_le16(BIT(0)); cmd_frame->desc_word[3] |= cpu_to_le16(common->tx_power << 8); skb_put(skb, FRAME_DESC_SZ); return rsi_send_internal_mgmt_frame(common, skb); } /* This function programs the threshold. */ int rsi_send_vap_dynamic_update(struct rsi_common *common) { struct sk_buff *skb; struct rsi_dynamic_s *dynamic_frame; rsi_dbg(MGMT_TX_ZONE, "%s: Sending vap update indication frame\n", __func__); skb = dev_alloc_skb(sizeof(struct rsi_dynamic_s)); if (!skb) return -ENOMEM; memset(skb->data, 0, sizeof(struct rsi_dynamic_s)); dynamic_frame = (struct rsi_dynamic_s *)skb->data; rsi_set_len_qno(&dynamic_frame->desc_dword0.len_qno, sizeof(dynamic_frame->frame_body), RSI_WIFI_MGMT_Q); dynamic_frame->desc_dword0.frame_type = VAP_DYNAMIC_UPDATE; dynamic_frame->desc_dword2.pkt_info = cpu_to_le32(common->rts_threshold); if (common->wow_flags & RSI_WOW_ENABLED) { /* Beacon miss threshold */ dynamic_frame->desc_dword3.token = cpu_to_le16(RSI_BCN_MISS_THRESHOLD); dynamic_frame->frame_body.keep_alive_period = cpu_to_le16(RSI_WOW_KEEPALIVE); } else { dynamic_frame->frame_body.keep_alive_period = cpu_to_le16(RSI_DEF_KEEPALIVE); } dynamic_frame->desc_dword3.sta_id = 0; /* vap id */ skb_put(skb, sizeof(struct rsi_dynamic_s)); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_compare() - This function is used to compare two integers * @a: pointer to the first integer * @b: pointer to the second integer * * Return: 0 if both are equal, -1 if the first is smaller, else 1 */ static int rsi_compare(const void *a, const void *b) { u16 _a = *(const u16 *)(a); u16 _b = *(const u16 *)(b); if (_a > _b) return -1; if (_a < _b) return 1; return 0; } /** * rsi_map_rates() - This function is used to map selected rates to hw rates. * @rate: The standard rate to be mapped. * @offset: Offset that will be returned. * * Return: 0 if it is a mcs rate, else 1 */ static bool rsi_map_rates(u16 rate, int *offset) { int kk; for (kk = 0; kk < ARRAY_SIZE(rsi_mcsrates); kk++) { if (rate == mcs[kk]) { *offset = kk; return false; } } for (kk = 0; kk < ARRAY_SIZE(rsi_rates); kk++) { if (rate == rsi_rates[kk].bitrate / 5) { *offset = kk; break; } } return true; } /** * rsi_send_auto_rate_request() - This function is to set rates for connection * and send autorate request to firmware. * @common: Pointer to the driver private structure. * @sta: mac80211 station. * @sta_id: station id. * @vif: Pointer to the ieee80211_vif structure. * * Return: 0 on success, corresponding error code on failure. */ static int rsi_send_auto_rate_request(struct rsi_common *common, struct ieee80211_sta *sta, u16 sta_id, struct ieee80211_vif *vif) { struct sk_buff *skb; struct rsi_auto_rate *auto_rate; int ii = 0, jj = 0, kk = 0; struct ieee80211_hw *hw = common->priv->hw; u8 band = hw->conf.chandef.chan->band; u8 num_supported_rates = 0; u8 rate_table_offset, rate_offset = 0; u32 rate_bitmap, configured_rates; u16 *selected_rates, min_rate; bool is_ht = false, is_sgi = false; u16 frame_len = sizeof(struct rsi_auto_rate); rsi_dbg(MGMT_TX_ZONE, "%s: Sending auto rate request frame\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, frame_len); selected_rates = kzalloc(2 * RSI_TBL_SZ, GFP_KERNEL); if (!selected_rates) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of mem\n", __func__); dev_kfree_skb(skb); return -ENOMEM; } auto_rate = (struct rsi_auto_rate *)skb->data; auto_rate->aarf_rssi = cpu_to_le16(((u16)3 << 6) | (u16)(18 & 0x3f)); auto_rate->collision_tolerance = cpu_to_le16(3); auto_rate->failure_limit = cpu_to_le16(3); auto_rate->initial_boundary = cpu_to_le16(3); auto_rate->max_threshold_limt = cpu_to_le16(27); auto_rate->desc.desc_dword0.frame_type = AUTO_RATE_IND; if (common->channel_width == BW_40MHZ) auto_rate->desc.desc_dword3.qid_tid = BW_40MHZ; auto_rate->desc.desc_dword3.sta_id = sta_id; if (vif->type == NL80211_IFTYPE_STATION) { rate_bitmap = common->bitrate_mask[band]; is_ht = common->vif_info[0].is_ht; is_sgi = common->vif_info[0].sgi; } else { rate_bitmap = sta->deflink.supp_rates[band]; is_ht = sta->deflink.ht_cap.ht_supported; if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20) || (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) is_sgi = true; } /* Limit to any rates administratively configured by cfg80211 */ configured_rates = common->rate_config[band].configured_mask ?: 0xffffffff; rate_bitmap &= configured_rates; if (band == NL80211_BAND_2GHZ) { if ((rate_bitmap == 0) && (is_ht)) min_rate = RSI_RATE_MCS0; else min_rate = RSI_RATE_1; rate_table_offset = 0; } else { if ((rate_bitmap == 0) && (is_ht)) min_rate = RSI_RATE_MCS0; else min_rate = RSI_RATE_6; rate_table_offset = 4; } for (ii = 0, jj = 0; ii < (ARRAY_SIZE(rsi_rates) - rate_table_offset); ii++) { if (rate_bitmap & BIT(ii)) { selected_rates[jj++] = (rsi_rates[ii + rate_table_offset].bitrate / 5); rate_offset++; } } num_supported_rates = jj; if (is_ht) { for (ii = 0; ii < ARRAY_SIZE(mcs); ii++) { if (configured_rates & BIT(ii + ARRAY_SIZE(rsi_rates))) { selected_rates[jj++] = mcs[ii]; num_supported_rates++; rate_offset++; } } } sort(selected_rates, jj, sizeof(u16), &rsi_compare, NULL); /* mapping the rates to RSI rates */ for (ii = 0; ii < jj; ii++) { if (rsi_map_rates(selected_rates[ii], &kk)) { auto_rate->supported_rates[ii] = cpu_to_le16(rsi_rates[kk].hw_value); } else { auto_rate->supported_rates[ii] = cpu_to_le16(rsi_mcsrates[kk]); } } /* loading HT rates in the bottom half of the auto rate table */ if (is_ht) { for (ii = rate_offset, kk = ARRAY_SIZE(rsi_mcsrates) - 1; ii < rate_offset + 2 * ARRAY_SIZE(rsi_mcsrates); ii++) { if (is_sgi || conf_is_ht40(&common->priv->hw->conf)) auto_rate->supported_rates[ii++] = cpu_to_le16(rsi_mcsrates[kk] | BIT(9)); else auto_rate->supported_rates[ii++] = cpu_to_le16(rsi_mcsrates[kk]); auto_rate->supported_rates[ii] = cpu_to_le16(rsi_mcsrates[kk--]); } for (; ii < (RSI_TBL_SZ - 1); ii++) { auto_rate->supported_rates[ii] = cpu_to_le16(rsi_mcsrates[0]); } } for (; ii < RSI_TBL_SZ; ii++) auto_rate->supported_rates[ii] = cpu_to_le16(min_rate); auto_rate->num_supported_rates = cpu_to_le16(num_supported_rates * 2); auto_rate->moderate_rate_inx = cpu_to_le16(num_supported_rates / 2); num_supported_rates *= 2; rsi_set_len_qno(&auto_rate->desc.desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); skb_put(skb, frame_len); kfree(selected_rates); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_inform_bss_status() - This function informs about bss status with the * help of sta notify params by sending an internal * management frame to firmware. * @common: Pointer to the driver private structure. * @opmode: Operating mode of device. * @status: Bss status type. * @addr: Address of the register. * @qos_enable: Qos is enabled. * @aid: Aid (unique for all STAs). * @sta: mac80211 station. * @sta_id: station id. * @assoc_cap: capabilities. * @vif: Pointer to the ieee80211_vif structure. * * Return: None. */ void rsi_inform_bss_status(struct rsi_common *common, enum opmode opmode, u8 status, const u8 *addr, u8 qos_enable, u16 aid, struct ieee80211_sta *sta, u16 sta_id, u16 assoc_cap, struct ieee80211_vif *vif) { if (status) { if (opmode == RSI_OPMODE_STA) common->hw_data_qs_blocked = true; rsi_hal_send_sta_notify_frame(common, opmode, STA_CONNECTED, addr, qos_enable, aid, sta_id, vif); if (!common->rate_config[common->band].fixed_enabled) rsi_send_auto_rate_request(common, sta, sta_id, vif); if (opmode == RSI_OPMODE_STA && !(assoc_cap & WLAN_CAPABILITY_PRIVACY) && !rsi_send_block_unblock_frame(common, false)) common->hw_data_qs_blocked = false; } else { if (opmode == RSI_OPMODE_STA) common->hw_data_qs_blocked = true; if (!(common->wow_flags & RSI_WOW_ENABLED)) rsi_hal_send_sta_notify_frame(common, opmode, STA_DISCONNECTED, addr, qos_enable, aid, sta_id, vif); if (opmode == RSI_OPMODE_STA) rsi_send_block_unblock_frame(common, true); } } /** * rsi_eeprom_read() - This function sends a frame to read the mac address * from the eeprom. * @common: Pointer to the driver private structure. * * Return: 0 on success, -1 on failure. */ static int rsi_eeprom_read(struct rsi_common *common) { struct rsi_eeprom_read_frame *mgmt_frame; struct rsi_hw *adapter = common->priv; struct sk_buff *skb; rsi_dbg(MGMT_TX_ZONE, "%s: Sending EEPROM read req frame\n", __func__); skb = dev_alloc_skb(FRAME_DESC_SZ); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, FRAME_DESC_SZ); mgmt_frame = (struct rsi_eeprom_read_frame *)skb->data; /* FrameType */ rsi_set_len_qno(&mgmt_frame->len_qno, 0, RSI_WIFI_MGMT_Q); mgmt_frame->pkt_type = EEPROM_READ; /* Number of bytes to read */ mgmt_frame->pkt_info = cpu_to_le32((adapter->eeprom.length << RSI_EEPROM_LEN_OFFSET) & RSI_EEPROM_LEN_MASK); mgmt_frame->pkt_info |= cpu_to_le32((3 << RSI_EEPROM_HDR_SIZE_OFFSET) & RSI_EEPROM_HDR_SIZE_MASK); /* Address to read */ mgmt_frame->eeprom_offset = cpu_to_le32(adapter->eeprom.offset); skb_put(skb, FRAME_DESC_SZ); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_send_block_unblock_frame() - This function sends a frame to block/unblock * data queues in the firmware * * @common: Pointer to the driver private structure. * @block_event: Event block if true, unblock if false * returns 0 on success, -1 on failure. */ int rsi_send_block_unblock_frame(struct rsi_common *common, bool block_event) { struct rsi_block_unblock_data *mgmt_frame; struct sk_buff *skb; rsi_dbg(MGMT_TX_ZONE, "%s: Sending block/unblock frame\n", __func__); skb = dev_alloc_skb(FRAME_DESC_SZ); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, FRAME_DESC_SZ); mgmt_frame = (struct rsi_block_unblock_data *)skb->data; rsi_set_len_qno(&mgmt_frame->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q); mgmt_frame->desc_dword0.frame_type = BLOCK_HW_QUEUE; mgmt_frame->host_quiet_info = QUIET_INFO_VALID; if (block_event) { rsi_dbg(INFO_ZONE, "blocking the data qs\n"); mgmt_frame->block_q_bitmap = cpu_to_le16(0xf); mgmt_frame->block_q_bitmap |= cpu_to_le16(0xf << 4); } else { rsi_dbg(INFO_ZONE, "unblocking the data qs\n"); mgmt_frame->unblock_q_bitmap = cpu_to_le16(0xf); mgmt_frame->unblock_q_bitmap |= cpu_to_le16(0xf << 4); } skb_put(skb, FRAME_DESC_SZ); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_send_rx_filter_frame() - Sends a frame to filter the RX packets * * @common: Pointer to the driver private structure. * @rx_filter_word: Flags of filter packets * * Returns 0 on success, -1 on failure. */ int rsi_send_rx_filter_frame(struct rsi_common *common, u16 rx_filter_word) { struct rsi_mac_frame *cmd_frame; struct sk_buff *skb; rsi_dbg(MGMT_TX_ZONE, "Sending RX filter frame\n"); skb = dev_alloc_skb(FRAME_DESC_SZ); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, FRAME_DESC_SZ); cmd_frame = (struct rsi_mac_frame *)skb->data; cmd_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12); cmd_frame->desc_word[1] = cpu_to_le16(SET_RX_FILTER); cmd_frame->desc_word[4] = cpu_to_le16(rx_filter_word); skb_put(skb, FRAME_DESC_SZ); return rsi_send_internal_mgmt_frame(common, skb); } int rsi_send_ps_request(struct rsi_hw *adapter, bool enable, struct ieee80211_vif *vif) { struct rsi_common *common = adapter->priv; struct rsi_request_ps *ps; struct rsi_ps_info *ps_info; struct sk_buff *skb; int frame_len = sizeof(*ps); skb = dev_alloc_skb(frame_len); if (!skb) return -ENOMEM; memset(skb->data, 0, frame_len); ps = (struct rsi_request_ps *)skb->data; ps_info = &adapter->ps_info; rsi_set_len_qno(&ps->desc.desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); ps->desc.desc_dword0.frame_type = WAKEUP_SLEEP_REQUEST; if (enable) { ps->ps_sleep.enable = RSI_PS_ENABLE; ps->desc.desc_dword3.token = cpu_to_le16(RSI_SLEEP_REQUEST); } else { ps->ps_sleep.enable = RSI_PS_DISABLE; ps->desc.desc_dword0.len_qno |= cpu_to_le16(RSI_PS_DISABLE_IND); ps->desc.desc_dword3.token = cpu_to_le16(RSI_WAKEUP_REQUEST); } ps->ps_uapsd_acs = common->uapsd_bitmap; ps->ps_sleep.sleep_type = ps_info->sleep_type; ps->ps_sleep.num_bcns_per_lis_int = cpu_to_le16(ps_info->num_bcns_per_lis_int); ps->ps_sleep.sleep_duration = cpu_to_le32(ps_info->deep_sleep_wakeup_period); if (vif->cfg.assoc) ps->ps_sleep.connected_sleep = RSI_CONNECTED_SLEEP; else ps->ps_sleep.connected_sleep = RSI_DEEP_SLEEP; ps->ps_listen_interval = cpu_to_le32(ps_info->listen_interval); ps->ps_dtim_interval_duration = cpu_to_le32(ps_info->dtim_interval_duration); if (ps_info->listen_interval > ps_info->dtim_interval_duration) ps->ps_listen_interval = cpu_to_le32(RSI_PS_DISABLE); ps->ps_num_dtim_intervals = cpu_to_le16(ps_info->num_dtims_per_sleep); skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } static int rsi_send_w9116_features(struct rsi_common *common) { struct rsi_wlan_9116_features *w9116_features; u16 frame_len = sizeof(struct rsi_wlan_9116_features); struct sk_buff *skb; rsi_dbg(MGMT_TX_ZONE, "%s: Sending wlan 9116 features\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) return -ENOMEM; memset(skb->data, 0, frame_len); w9116_features = (struct rsi_wlan_9116_features *)skb->data; w9116_features->pll_mode = common->w9116_features.pll_mode; w9116_features->rf_type = common->w9116_features.rf_type; w9116_features->wireless_mode = common->w9116_features.wireless_mode; w9116_features->enable_ppe = common->w9116_features.enable_ppe; w9116_features->afe_type = common->w9116_features.afe_type; if (common->w9116_features.dpd) w9116_features->feature_enable |= cpu_to_le32(RSI_DPD); if (common->w9116_features.sifs_tx_enable) w9116_features->feature_enable |= cpu_to_le32(RSI_SIFS_TX_ENABLE); if (common->w9116_features.ps_options & RSI_DUTY_CYCLING) w9116_features->feature_enable |= cpu_to_le32(RSI_DUTY_CYCLING); if (common->w9116_features.ps_options & RSI_END_OF_FRAME) w9116_features->feature_enable |= cpu_to_le32(RSI_END_OF_FRAME); w9116_features->feature_enable |= cpu_to_le32((common->w9116_features.ps_options & ~0x3) << 2); rsi_set_len_qno(&w9116_features->desc.desc_dword0.len_qno, frame_len - FRAME_DESC_SZ, RSI_WIFI_MGMT_Q); w9116_features->desc.desc_dword0.frame_type = FEATURES_ENABLE; skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_set_antenna() - This function send antenna configuration request * to device * * @common: Pointer to the driver private structure. * @antenna: bitmap for tx antenna selection * * Return: 0 on Success, negative error code on failure */ int rsi_set_antenna(struct rsi_common *common, u8 antenna) { struct rsi_ant_sel_frame *ant_sel_frame; struct sk_buff *skb; skb = dev_alloc_skb(FRAME_DESC_SZ); if (!skb) { rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", __func__); return -ENOMEM; } memset(skb->data, 0, FRAME_DESC_SZ); ant_sel_frame = (struct rsi_ant_sel_frame *)skb->data; ant_sel_frame->desc_dword0.frame_type = ANT_SEL_FRAME; ant_sel_frame->sub_frame_type = ANTENNA_SEL_TYPE; ant_sel_frame->ant_value = cpu_to_le16(antenna & ANTENNA_MASK_VALUE); rsi_set_len_qno(&ant_sel_frame->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q); skb_put(skb, FRAME_DESC_SZ); return rsi_send_internal_mgmt_frame(common, skb); } static int rsi_send_beacon(struct rsi_common *common) { struct sk_buff *skb = NULL; u8 dword_align_bytes = 0; skb = dev_alloc_skb(MAX_MGMT_PKT_SIZE); if (!skb) return -ENOMEM; memset(skb->data, 0, MAX_MGMT_PKT_SIZE); dword_align_bytes = ((unsigned long)skb->data & 0x3f); if (dword_align_bytes) skb_pull(skb, (64 - dword_align_bytes)); if (rsi_prepare_beacon(common, skb)) { rsi_dbg(ERR_ZONE, "Failed to prepare beacon\n"); dev_kfree_skb(skb); return -EINVAL; } skb_queue_tail(&common->tx_queue[MGMT_BEACON_Q], skb); rsi_set_event(&common->tx_thread.event); rsi_dbg(DATA_TX_ZONE, "%s: Added to beacon queue\n", __func__); return 0; } #ifdef CONFIG_PM int rsi_send_wowlan_request(struct rsi_common *common, u16 flags, u16 sleep_status) { struct rsi_wowlan_req *cmd_frame; struct sk_buff *skb; u8 length; rsi_dbg(ERR_ZONE, "%s: Sending wowlan request frame\n", __func__); length = sizeof(*cmd_frame); skb = dev_alloc_skb(length); if (!skb) return -ENOMEM; memset(skb->data, 0, length); cmd_frame = (struct rsi_wowlan_req *)skb->data; rsi_set_len_qno(&cmd_frame->desc.desc_dword0.len_qno, (length - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); cmd_frame->desc.desc_dword0.frame_type = WOWLAN_CONFIG_PARAMS; cmd_frame->host_sleep_status = sleep_status; if (common->secinfo.gtk_cipher) flags |= RSI_WOW_GTK_REKEY; if (sleep_status) cmd_frame->wow_flags = flags; rsi_dbg(INFO_ZONE, "Host_Sleep_Status : %d Flags : %d\n", cmd_frame->host_sleep_status, cmd_frame->wow_flags); skb_put(skb, length); return rsi_send_internal_mgmt_frame(common, skb); } #endif int rsi_send_bgscan_params(struct rsi_common *common, int enable) { struct rsi_bgscan_params *params = &common->bgscan; struct cfg80211_scan_request *scan_req = common->hwscan; struct rsi_bgscan_config *bgscan; struct sk_buff *skb; u16 frame_len = sizeof(*bgscan); u8 i; rsi_dbg(MGMT_TX_ZONE, "%s: Sending bgscan params frame\n", __func__); skb = dev_alloc_skb(frame_len); if (!skb) return -ENOMEM; memset(skb->data, 0, frame_len); bgscan = (struct rsi_bgscan_config *)skb->data; rsi_set_len_qno(&bgscan->desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q); bgscan->desc_dword0.frame_type = BG_SCAN_PARAMS; bgscan->bgscan_threshold = cpu_to_le16(params->bgscan_threshold); bgscan->roam_threshold = cpu_to_le16(params->roam_threshold); if (enable) bgscan->bgscan_periodicity = cpu_to_le16(params->bgscan_periodicity); bgscan->active_scan_duration = cpu_to_le16(params->active_scan_duration); bgscan->passive_scan_duration = cpu_to_le16(params->passive_scan_duration); bgscan->two_probe = params->two_probe; bgscan->num_bgscan_channels = scan_req->n_channels; for (i = 0; i < bgscan->num_bgscan_channels; i++) bgscan->channels2scan[i] = cpu_to_le16(scan_req->channels[i]->hw_value); skb_put(skb, frame_len); return rsi_send_internal_mgmt_frame(common, skb); } /* This function sends the probe request to be used by firmware in * background scan */ int rsi_send_bgscan_probe_req(struct rsi_common *common, struct ieee80211_vif *vif) { struct cfg80211_scan_request *scan_req = common->hwscan; struct rsi_bgscan_probe *bgscan; struct sk_buff *skb; struct sk_buff *probereq_skb; u16 frame_len = sizeof(*bgscan); size_t ssid_len = 0; u8 *ssid = NULL; rsi_dbg(MGMT_TX_ZONE, "%s: Sending bgscan probe req frame\n", __func__); if (common->priv->sc_nvifs <= 0) return -ENODEV; if (scan_req->n_ssids) { ssid = scan_req->ssids[0].ssid; ssid_len = scan_req->ssids[0].ssid_len; } skb = dev_alloc_skb(frame_len + MAX_BGSCAN_PROBE_REQ_LEN); if (!skb) return -ENOMEM; memset(skb->data, 0, frame_len + MAX_BGSCAN_PROBE_REQ_LEN); bgscan = (struct rsi_bgscan_probe *)skb->data; bgscan->desc_dword0.frame_type = BG_SCAN_PROBE_REQ; bgscan->flags = cpu_to_le16(HOST_BG_SCAN_TRIG); if (common->band == NL80211_BAND_5GHZ) { bgscan->mgmt_rate = cpu_to_le16(RSI_RATE_6); bgscan->def_chan = cpu_to_le16(40); } else { bgscan->mgmt_rate = cpu_to_le16(RSI_RATE_1); bgscan->def_chan = cpu_to_le16(11); } bgscan->channel_scan_time = cpu_to_le16(RSI_CHANNEL_SCAN_TIME); probereq_skb = ieee80211_probereq_get(common->priv->hw, vif->addr, ssid, ssid_len, scan_req->ie_len); if (!probereq_skb) { dev_kfree_skb(skb); return -ENOMEM; } memcpy(&skb->data[frame_len], probereq_skb->data, probereq_skb->len); bgscan->probe_req_length = cpu_to_le16(probereq_skb->len); rsi_set_len_qno(&bgscan->desc_dword0.len_qno, (frame_len - FRAME_DESC_SZ + probereq_skb->len), RSI_WIFI_MGMT_Q); skb_put(skb, frame_len + probereq_skb->len); dev_kfree_skb(probereq_skb); return rsi_send_internal_mgmt_frame(common, skb); } /** * rsi_handle_ta_confirm_type() - This function handles the confirm frames. * @common: Pointer to the driver private structure. * @msg: Pointer to received packet. * * Return: 0 on success, -1 on failure. */ static int rsi_handle_ta_confirm_type(struct rsi_common *common, u8 *msg) { struct rsi_hw *adapter = common->priv; u8 sub_type = (msg[15] & 0xff); u16 msg_len = ((u16 *)msg)[0] & 0xfff; u8 offset; switch (sub_type) { case BOOTUP_PARAMS_REQUEST: rsi_dbg(FSM_ZONE, "%s: Boot up params confirm received\n", __func__); if (common->fsm_state == FSM_BOOT_PARAMS_SENT) { if (adapter->device_model == RSI_DEV_9116) { common->band = NL80211_BAND_5GHZ; common->num_supp_bands = 2; if (rsi_send_reset_mac(common)) goto out; else common->fsm_state = FSM_RESET_MAC_SENT; } else { adapter->eeprom.length = (IEEE80211_ADDR_LEN + WLAN_MAC_MAGIC_WORD_LEN + WLAN_HOST_MODE_LEN); adapter->eeprom.offset = WLAN_MAC_EEPROM_ADDR; if (rsi_eeprom_read(common)) { common->fsm_state = FSM_CARD_NOT_READY; goto out; } common->fsm_state = FSM_EEPROM_READ_MAC_ADDR; } } else { rsi_dbg(INFO_ZONE, "%s: Received bootup params cfm in %d state\n", __func__, common->fsm_state); return 0; } break; case EEPROM_READ: rsi_dbg(FSM_ZONE, "EEPROM READ confirm received\n"); if (msg_len <= 0) { rsi_dbg(FSM_ZONE, "%s: [EEPROM_READ] Invalid len %d\n", __func__, msg_len); goto out; } if (msg[16] != MAGIC_WORD) { rsi_dbg(FSM_ZONE, "%s: [EEPROM_READ] Invalid token\n", __func__); common->fsm_state = FSM_CARD_NOT_READY; goto out; } if (common->fsm_state == FSM_EEPROM_READ_MAC_ADDR) { offset = (FRAME_DESC_SZ + WLAN_HOST_MODE_LEN + WLAN_MAC_MAGIC_WORD_LEN); memcpy(common->mac_addr, &msg[offset], ETH_ALEN); adapter->eeprom.length = ((WLAN_MAC_MAGIC_WORD_LEN + 3) & (~3)); adapter->eeprom.offset = WLAN_EEPROM_RFTYPE_ADDR; if (rsi_eeprom_read(common)) { rsi_dbg(ERR_ZONE, "%s: Failed reading RF band\n", __func__); common->fsm_state = FSM_CARD_NOT_READY; goto out; } common->fsm_state = FSM_EEPROM_READ_RF_TYPE; } else if (common->fsm_state == FSM_EEPROM_READ_RF_TYPE) { if ((msg[17] & 0x3) == 0x3) { rsi_dbg(INIT_ZONE, "Dual band supported\n"); common->band = NL80211_BAND_5GHZ; common->num_supp_bands = 2; } else if ((msg[17] & 0x3) == 0x1) { rsi_dbg(INIT_ZONE, "Only 2.4Ghz band supported\n"); common->band = NL80211_BAND_2GHZ; common->num_supp_bands = 1; } if (rsi_send_reset_mac(common)) goto out; common->fsm_state = FSM_RESET_MAC_SENT; } else { rsi_dbg(ERR_ZONE, "%s: Invalid EEPROM read type\n", __func__); return 0; } break; case RESET_MAC_REQ: if (common->fsm_state == FSM_RESET_MAC_SENT) { rsi_dbg(FSM_ZONE, "%s: Reset MAC cfm received\n", __func__); if (rsi_load_radio_caps(common)) goto out; else common->fsm_state = FSM_RADIO_CAPS_SENT; } else { rsi_dbg(ERR_ZONE, "%s: Received reset mac cfm in %d state\n", __func__, common->fsm_state); return 0; } break; case RADIO_CAPABILITIES: if (common->fsm_state == FSM_RADIO_CAPS_SENT) { common->rf_reset = 1; if (adapter->device_model == RSI_DEV_9116 && rsi_send_w9116_features(common)) { rsi_dbg(ERR_ZONE, "Failed to send 9116 features\n"); goto out; } if (rsi_program_bb_rf(common)) { goto out; } else { common->fsm_state = FSM_BB_RF_PROG_SENT; rsi_dbg(FSM_ZONE, "%s: Radio cap cfm received\n", __func__); } } else { rsi_dbg(INFO_ZONE, "%s: Received radio caps cfm in %d state\n", __func__, common->fsm_state); return 0; } break; case BB_PROG_VALUES_REQUEST: case RF_PROG_VALUES_REQUEST: case BBP_PROG_IN_TA: rsi_dbg(FSM_ZONE, "%s: BB/RF cfm received\n", __func__); if (common->fsm_state == FSM_BB_RF_PROG_SENT) { common->bb_rf_prog_count--; if (!common->bb_rf_prog_count) { common->fsm_state = FSM_MAC_INIT_DONE; if (common->reinit_hw) { complete(&common->wlan_init_completion); } else { if (common->bt_defer_attach) rsi_attach_bt(common); return rsi_mac80211_attach(common); } } } else { rsi_dbg(INFO_ZONE, "%s: Received bbb_rf cfm in %d state\n", __func__, common->fsm_state); return 0; } break; case SCAN_REQUEST: rsi_dbg(INFO_ZONE, "Set channel confirm\n"); break; case WAKEUP_SLEEP_REQUEST: rsi_dbg(INFO_ZONE, "Wakeup/Sleep confirmation.\n"); return rsi_handle_ps_confirm(adapter, msg); case BG_SCAN_PROBE_REQ: rsi_dbg(INFO_ZONE, "BG scan complete event\n"); if (common->bgscan_en) { struct cfg80211_scan_info info; if (!rsi_send_bgscan_params(common, RSI_STOP_BGSCAN)) common->bgscan_en = 0; info.aborted = false; ieee80211_scan_completed(adapter->hw, &info); } rsi_dbg(INFO_ZONE, "Background scan completed\n"); break; default: rsi_dbg(INFO_ZONE, "%s: Invalid TA confirm pkt received\n", __func__); break; } return 0; out: rsi_dbg(ERR_ZONE, "%s: Unable to send pkt/Invalid frame received\n", __func__); return -EINVAL; } int rsi_handle_card_ready(struct rsi_common *common, u8 *msg) { int status; switch (common->fsm_state) { case FSM_CARD_NOT_READY: rsi_dbg(INIT_ZONE, "Card ready indication from Common HAL\n"); rsi_set_default_parameters(common); if (rsi_send_common_dev_params(common) < 0) return -EINVAL; common->fsm_state = FSM_COMMON_DEV_PARAMS_SENT; break; case FSM_COMMON_DEV_PARAMS_SENT: rsi_dbg(INIT_ZONE, "Card ready indication from WLAN HAL\n"); if (common->priv->device_model == RSI_DEV_9116) { if (msg[16] != MAGIC_WORD) { rsi_dbg(FSM_ZONE, "%s: [EEPROM_READ] Invalid token\n", __func__); common->fsm_state = FSM_CARD_NOT_READY; return -EINVAL; } memcpy(common->mac_addr, &msg[20], ETH_ALEN); rsi_dbg(INIT_ZONE, "MAC Addr %pM", common->mac_addr); } /* Get usb buffer status register address */ common->priv->usb_buffer_status_reg = *(u32 *)&msg[8]; rsi_dbg(INFO_ZONE, "USB buffer status register = %x\n", common->priv->usb_buffer_status_reg); if (common->priv->device_model == RSI_DEV_9116) status = rsi_load_9116_bootup_params(common); else status = rsi_load_bootup_params(common); if (status < 0) { common->fsm_state = FSM_CARD_NOT_READY; return status; } common->fsm_state = FSM_BOOT_PARAMS_SENT; break; default: rsi_dbg(ERR_ZONE, "%s: card ready indication in invalid state %d.\n", __func__, common->fsm_state); return -EINVAL; } return 0; } /** * rsi_mgmt_pkt_recv() - This function processes the management packets * received from the hardware. * @common: Pointer to the driver private structure. * @msg: Pointer to the received packet. * * Return: 0 on success, -1 on failure. */ int rsi_mgmt_pkt_recv(struct rsi_common *common, u8 *msg) { s32 msg_len = (le16_to_cpu(*(__le16 *)&msg[0]) & 0x0fff); u16 msg_type = (msg[2]); rsi_dbg(FSM_ZONE, "%s: Msg Len: %d, Msg Type: %4x\n", __func__, msg_len, msg_type); switch (msg_type) { case TA_CONFIRM_TYPE: return rsi_handle_ta_confirm_type(common, msg); case CARD_READY_IND: common->hibernate_resume = false; rsi_dbg(FSM_ZONE, "%s: Card ready indication received\n", __func__); return rsi_handle_card_ready(common, msg); case TX_STATUS_IND: switch (msg[RSI_TX_STATUS_TYPE]) { case PROBEREQ_CONFIRM: common->mgmt_q_block = false; rsi_dbg(FSM_ZONE, "%s: Probe confirm received\n", __func__); break; case EAPOL4_CONFIRM: if (msg[RSI_TX_STATUS]) { common->eapol4_confirm = true; if (!rsi_send_block_unblock_frame(common, false)) common->hw_data_qs_blocked = false; } } break; case BEACON_EVENT_IND: rsi_dbg(INFO_ZONE, "Beacon event\n"); if (common->fsm_state != FSM_MAC_INIT_DONE) return -1; if (common->iface_down) return -1; if (!common->beacon_enabled) return -1; rsi_send_beacon(common); break; case WOWLAN_WAKEUP_REASON: rsi_dbg(ERR_ZONE, "\n\nWakeup Type: %x\n", msg[15]); switch (msg[15]) { case RSI_UNICAST_MAGIC_PKT: rsi_dbg(ERR_ZONE, "*** Wakeup for Unicast magic packet ***\n"); break; case RSI_BROADCAST_MAGICPKT: rsi_dbg(ERR_ZONE, "*** Wakeup for Broadcast magic packet ***\n"); break; case RSI_EAPOL_PKT: rsi_dbg(ERR_ZONE, "*** Wakeup for GTK renewal ***\n"); break; case RSI_DISCONNECT_PKT: rsi_dbg(ERR_ZONE, "*** Wakeup for Disconnect ***\n"); break; case RSI_HW_BMISS_PKT: rsi_dbg(ERR_ZONE, "*** Wakeup for HW Beacon miss ***\n"); break; default: rsi_dbg(ERR_ZONE, "##### Un-intentional Wakeup #####\n"); break; } break; case RX_DOT11_MGMT: return rsi_mgmt_pkt_to_core(common, msg, msg_len); default: rsi_dbg(INFO_ZONE, "Received packet type: 0x%x\n", msg_type); } return 0; } |
| 28 28 27 28 26 28 38 29 47 38 39 29 47 47 37 39 39 47 46 47 12 50 50 47 12 50 50 38 28 28 37 37 38 38 13 14 14 13 14 14 13 38 37 38 38 38 38 37 38 | 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 | // SPDX-License-Identifier: GPL-2.0 /* * Implementation of the SID table type. * * Original author: Stephen Smalley, <stephen.smalley.work@gmail.com> * Author: Ondrej Mosnacek, <omosnacek@gmail.com> * * Copyright (C) 2018 Red Hat, Inc. */ #include <linux/errno.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/rcupdate.h> #include <linux/slab.h> #include <linux/sched.h> #include <linux/spinlock.h> #include <asm/barrier.h> #include "flask.h" #include "security.h" #include "sidtab.h" #include "services.h" struct sidtab_str_cache { struct rcu_head rcu_member; struct list_head lru_member; struct sidtab_entry *parent; u32 len; char str[] __counted_by(len); }; #define index_to_sid(index) ((index) + SECINITSID_NUM + 1) #define sid_to_index(sid) ((sid) - (SECINITSID_NUM + 1)) int sidtab_init(struct sidtab *s) { u32 i; memset(s->roots, 0, sizeof(s->roots)); for (i = 0; i < SECINITSID_NUM; i++) s->isids[i].set = 0; s->frozen = false; s->count = 0; s->convert = NULL; hash_init(s->context_to_sid); spin_lock_init(&s->lock); #if CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE > 0 s->cache_free_slots = CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE; INIT_LIST_HEAD(&s->cache_lru_list); spin_lock_init(&s->cache_lock); #endif return 0; } static u32 context_to_sid(struct sidtab *s, struct context *context, u32 hash) { struct sidtab_entry *entry; u32 sid = 0; rcu_read_lock(); hash_for_each_possible_rcu(s->context_to_sid, entry, list, hash) { if (entry->hash != hash) continue; if (context_equal(&entry->context, context)) { sid = entry->sid; break; } } rcu_read_unlock(); return sid; } int sidtab_set_initial(struct sidtab *s, u32 sid, struct context *context) { struct sidtab_isid_entry *isid; u32 hash; int rc; if (sid == 0 || sid > SECINITSID_NUM) return -EINVAL; isid = &s->isids[sid - 1]; rc = context_cpy(&isid->entry.context, context); if (rc) return rc; #if CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE > 0 isid->entry.cache = NULL; #endif isid->set = 1; hash = context_compute_hash(context); /* * Multiple initial sids may map to the same context. Check that this * context is not already represented in the context_to_sid hashtable * to avoid duplicate entries and long linked lists upon hash * collision. */ if (!context_to_sid(s, context, hash)) { isid->entry.sid = sid; isid->entry.hash = hash; hash_add(s->context_to_sid, &isid->entry.list, hash); } return 0; } int sidtab_hash_stats(struct sidtab *sidtab, char *page) { unsigned int i; int chain_len = 0; int slots_used = 0; int entries = 0; int max_chain_len = 0; unsigned int cur_bucket = 0; struct sidtab_entry *entry; rcu_read_lock(); hash_for_each_rcu(sidtab->context_to_sid, i, entry, list) { entries++; if (i == cur_bucket) { chain_len++; if (chain_len == 1) slots_used++; } else { cur_bucket = i; if (chain_len > max_chain_len) max_chain_len = chain_len; chain_len = 0; } } rcu_read_unlock(); if (chain_len > max_chain_len) max_chain_len = chain_len; return scnprintf(page, PAGE_SIZE, "entries: %d\nbuckets used: %d/%d\n" "longest chain: %d\n", entries, slots_used, SIDTAB_HASH_BUCKETS, max_chain_len); } static u32 sidtab_level_from_count(u32 count) { u32 capacity = SIDTAB_LEAF_ENTRIES; u32 level = 0; while (count > capacity) { capacity <<= SIDTAB_INNER_SHIFT; ++level; } return level; } static int sidtab_alloc_roots(struct sidtab *s, u32 level) { u32 l; if (!s->roots[0].ptr_leaf) { s->roots[0].ptr_leaf = kzalloc(SIDTAB_NODE_ALLOC_SIZE, GFP_ATOMIC); if (!s->roots[0].ptr_leaf) return -ENOMEM; } for (l = 1; l <= level; ++l) if (!s->roots[l].ptr_inner) { s->roots[l].ptr_inner = kzalloc(SIDTAB_NODE_ALLOC_SIZE, GFP_ATOMIC); if (!s->roots[l].ptr_inner) return -ENOMEM; s->roots[l].ptr_inner->entries[0] = s->roots[l - 1]; } return 0; } static struct sidtab_entry *sidtab_do_lookup(struct sidtab *s, u32 index, int alloc) { union sidtab_entry_inner *entry; u32 level, capacity_shift, leaf_index = index / SIDTAB_LEAF_ENTRIES; /* find the level of the subtree we need */ level = sidtab_level_from_count(index + 1); capacity_shift = level * SIDTAB_INNER_SHIFT; /* allocate roots if needed */ if (alloc && sidtab_alloc_roots(s, level) != 0) return NULL; /* lookup inside the subtree */ entry = &s->roots[level]; while (level != 0) { capacity_shift -= SIDTAB_INNER_SHIFT; --level; entry = &entry->ptr_inner->entries[leaf_index >> capacity_shift]; leaf_index &= ((u32)1 << capacity_shift) - 1; if (!entry->ptr_inner) { if (alloc) entry->ptr_inner = kzalloc( SIDTAB_NODE_ALLOC_SIZE, GFP_ATOMIC); if (!entry->ptr_inner) return NULL; } } if (!entry->ptr_leaf) { if (alloc) entry->ptr_leaf = kzalloc(SIDTAB_NODE_ALLOC_SIZE, GFP_ATOMIC); if (!entry->ptr_leaf) return NULL; } return &entry->ptr_leaf->entries[index % SIDTAB_LEAF_ENTRIES]; } static struct sidtab_entry *sidtab_lookup(struct sidtab *s, u32 index) { /* read entries only after reading count */ u32 count = smp_load_acquire(&s->count); if (index >= count) return NULL; return sidtab_do_lookup(s, index, 0); } static struct sidtab_entry *sidtab_lookup_initial(struct sidtab *s, u32 sid) { return s->isids[sid - 1].set ? &s->isids[sid - 1].entry : NULL; } static struct sidtab_entry *sidtab_search_core(struct sidtab *s, u32 sid, int force) { if (sid != 0) { struct sidtab_entry *entry; if (sid > SECINITSID_NUM) entry = sidtab_lookup(s, sid_to_index(sid)); else entry = sidtab_lookup_initial(s, sid); if (entry && (!entry->context.len || force)) return entry; } return sidtab_lookup_initial(s, SECINITSID_UNLABELED); } struct sidtab_entry *sidtab_search_entry(struct sidtab *s, u32 sid) { return sidtab_search_core(s, sid, 0); } struct sidtab_entry *sidtab_search_entry_force(struct sidtab *s, u32 sid) { return sidtab_search_core(s, sid, 1); } int sidtab_context_to_sid(struct sidtab *s, struct context *context, u32 *sid) { unsigned long flags; u32 count, hash = context_compute_hash(context); struct sidtab_convert_params *convert; struct sidtab_entry *dst, *dst_convert; int rc; *sid = context_to_sid(s, context, hash); if (*sid) return 0; /* lock-free search failed: lock, re-search, and insert if not found */ spin_lock_irqsave(&s->lock, flags); rc = 0; *sid = context_to_sid(s, context, hash); if (*sid) goto out_unlock; if (unlikely(s->frozen)) { /* * This sidtab is now frozen - tell the caller to abort and * get the new one. */ rc = -ESTALE; goto out_unlock; } count = s->count; /* bail out if we already reached max entries */ rc = -EOVERFLOW; if (count >= SIDTAB_MAX) goto out_unlock; /* insert context into new entry */ rc = -ENOMEM; dst = sidtab_do_lookup(s, count, 1); if (!dst) goto out_unlock; dst->sid = index_to_sid(count); dst->hash = hash; rc = context_cpy(&dst->context, context); if (rc) goto out_unlock; /* * if we are building a new sidtab, we need to convert the context * and insert it there as well */ convert = s->convert; if (convert) { struct sidtab *target = convert->target; rc = -ENOMEM; dst_convert = sidtab_do_lookup(target, count, 1); if (!dst_convert) { context_destroy(&dst->context); goto out_unlock; } rc = services_convert_context(convert->args, context, &dst_convert->context, GFP_ATOMIC); if (rc) { context_destroy(&dst->context); goto out_unlock; } dst_convert->sid = index_to_sid(count); dst_convert->hash = context_compute_hash(&dst_convert->context); target->count = count + 1; hash_add_rcu(target->context_to_sid, &dst_convert->list, dst_convert->hash); } if (context->len) pr_info("SELinux: Context %s is not valid (left unmapped).\n", context->str); *sid = index_to_sid(count); /* write entries before updating count */ smp_store_release(&s->count, count + 1); hash_add_rcu(s->context_to_sid, &dst->list, dst->hash); rc = 0; out_unlock: spin_unlock_irqrestore(&s->lock, flags); return rc; } static void sidtab_convert_hashtable(struct sidtab *s, u32 count) { struct sidtab_entry *entry; u32 i; for (i = 0; i < count; i++) { entry = sidtab_do_lookup(s, i, 0); entry->sid = index_to_sid(i); entry->hash = context_compute_hash(&entry->context); hash_add_rcu(s->context_to_sid, &entry->list, entry->hash); } } static int sidtab_convert_tree(union sidtab_entry_inner *edst, union sidtab_entry_inner *esrc, u32 *pos, u32 count, u32 level, struct sidtab_convert_params *convert) { int rc; u32 i; if (level != 0) { if (!edst->ptr_inner) { edst->ptr_inner = kzalloc(SIDTAB_NODE_ALLOC_SIZE, GFP_KERNEL); if (!edst->ptr_inner) return -ENOMEM; } i = 0; while (i < SIDTAB_INNER_ENTRIES && *pos < count) { rc = sidtab_convert_tree(&edst->ptr_inner->entries[i], &esrc->ptr_inner->entries[i], pos, count, level - 1, convert); if (rc) return rc; i++; } } else { if (!edst->ptr_leaf) { edst->ptr_leaf = kzalloc(SIDTAB_NODE_ALLOC_SIZE, GFP_KERNEL); if (!edst->ptr_leaf) return -ENOMEM; } i = 0; while (i < SIDTAB_LEAF_ENTRIES && *pos < count) { rc = services_convert_context( convert->args, &esrc->ptr_leaf->entries[i].context, &edst->ptr_leaf->entries[i].context, GFP_KERNEL); if (rc) return rc; (*pos)++; i++; } cond_resched(); } return 0; } int sidtab_convert(struct sidtab *s, struct sidtab_convert_params *params) { unsigned long flags; u32 count, level, pos; int rc; spin_lock_irqsave(&s->lock, flags); /* concurrent policy loads are not allowed */ if (s->convert) { spin_unlock_irqrestore(&s->lock, flags); return -EBUSY; } count = s->count; level = sidtab_level_from_count(count); /* allocate last leaf in the new sidtab (to avoid race with * live convert) */ rc = sidtab_do_lookup(params->target, count - 1, 1) ? 0 : -ENOMEM; if (rc) { spin_unlock_irqrestore(&s->lock, flags); return rc; } /* set count in case no new entries are added during conversion */ params->target->count = count; /* enable live convert of new entries */ s->convert = params; /* we can safely convert the tree outside the lock */ spin_unlock_irqrestore(&s->lock, flags); pr_info("SELinux: Converting %u SID table entries...\n", count); /* convert all entries not covered by live convert */ pos = 0; rc = sidtab_convert_tree(¶ms->target->roots[level], &s->roots[level], &pos, count, level, params); if (rc) { /* we need to keep the old table - disable live convert */ spin_lock_irqsave(&s->lock, flags); s->convert = NULL; spin_unlock_irqrestore(&s->lock, flags); return rc; } /* * The hashtable can also be modified in sidtab_context_to_sid() * so we must re-acquire the lock here. */ spin_lock_irqsave(&s->lock, flags); sidtab_convert_hashtable(params->target, count); spin_unlock_irqrestore(&s->lock, flags); return 0; } void sidtab_cancel_convert(struct sidtab *s) { unsigned long flags; /* cancelling policy load - disable live convert of sidtab */ spin_lock_irqsave(&s->lock, flags); s->convert = NULL; spin_unlock_irqrestore(&s->lock, flags); } void sidtab_freeze_begin(struct sidtab *s, unsigned long *flags) __acquires(&s->lock) { spin_lock_irqsave(&s->lock, *flags); s->frozen = true; s->convert = NULL; } void sidtab_freeze_end(struct sidtab *s, unsigned long *flags) __releases(&s->lock) { spin_unlock_irqrestore(&s->lock, *flags); } static void sidtab_destroy_entry(struct sidtab_entry *entry) { context_destroy(&entry->context); #if CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE > 0 kfree(rcu_dereference_raw(entry->cache)); #endif } static void sidtab_destroy_tree(union sidtab_entry_inner entry, u32 level) { u32 i; if (level != 0) { struct sidtab_node_inner *node = entry.ptr_inner; if (!node) return; for (i = 0; i < SIDTAB_INNER_ENTRIES; i++) sidtab_destroy_tree(node->entries[i], level - 1); kfree(node); } else { struct sidtab_node_leaf *node = entry.ptr_leaf; if (!node) return; for (i = 0; i < SIDTAB_LEAF_ENTRIES; i++) sidtab_destroy_entry(&node->entries[i]); kfree(node); } } void sidtab_destroy(struct sidtab *s) { u32 i, level; for (i = 0; i < SECINITSID_NUM; i++) if (s->isids[i].set) sidtab_destroy_entry(&s->isids[i].entry); level = SIDTAB_MAX_LEVEL; while (level && !s->roots[level].ptr_inner) --level; sidtab_destroy_tree(s->roots[level], level); /* * The context_to_sid hashtable's objects are all shared * with the isids array and context tree, and so don't need * to be cleaned up here. */ } #if CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE > 0 void sidtab_sid2str_put(struct sidtab *s, struct sidtab_entry *entry, const char *str, u32 str_len) { struct sidtab_str_cache *cache, *victim = NULL; unsigned long flags; /* do not cache invalid contexts */ if (entry->context.len) return; spin_lock_irqsave(&s->cache_lock, flags); cache = rcu_dereference_protected(entry->cache, lockdep_is_held(&s->cache_lock)); if (cache) { /* entry in cache - just bump to the head of LRU list */ list_move(&cache->lru_member, &s->cache_lru_list); goto out_unlock; } cache = kmalloc(struct_size(cache, str, str_len), GFP_ATOMIC); if (!cache) goto out_unlock; if (s->cache_free_slots == 0) { /* pop a cache entry from the tail and free it */ victim = container_of(s->cache_lru_list.prev, struct sidtab_str_cache, lru_member); list_del(&victim->lru_member); rcu_assign_pointer(victim->parent->cache, NULL); } else { s->cache_free_slots--; } cache->parent = entry; cache->len = str_len; memcpy(cache->str, str, str_len); list_add(&cache->lru_member, &s->cache_lru_list); rcu_assign_pointer(entry->cache, cache); out_unlock: spin_unlock_irqrestore(&s->cache_lock, flags); kfree_rcu(victim, rcu_member); } int sidtab_sid2str_get(struct sidtab *s, struct sidtab_entry *entry, char **out, u32 *out_len) { struct sidtab_str_cache *cache; int rc = 0; if (entry->context.len) return -ENOENT; /* do not cache invalid contexts */ rcu_read_lock(); cache = rcu_dereference(entry->cache); if (!cache) { rc = -ENOENT; } else { *out_len = cache->len; if (out) { *out = kmemdup(cache->str, cache->len, GFP_ATOMIC); if (!*out) rc = -ENOMEM; } } rcu_read_unlock(); if (!rc && out) sidtab_sid2str_put(s, entry, *out, *out_len); return rc; } #endif /* CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE > 0 */ |
| 2 2 1 2 6 6 2 2 1 1 2 2 1 1 7 1 7 6 5 5 5 5 5 5 5 5 3 2 2 2 3 5 1 5 2 5 5 5 3 5 2 3 5 1 4 5 2 4 1 1 1 7 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 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * USB Synaptics device driver * * Copyright (c) 2002 Rob Miller (rob@inpharmatica . co . uk) * Copyright (c) 2003 Ron Lee (ron@debian.org) * cPad driver for kernel 2.4 * * Copyright (c) 2004 Jan Steinhoff (cpad@jan-steinhoff . de) * Copyright (c) 2004 Ron Lee (ron@debian.org) * rewritten for kernel 2.6 * * cPad display character device part is not included. It can be found at * http://jan-steinhoff.de/linux/synaptics-usb.html * * Bases on: usb_skeleton.c v2.2 by Greg Kroah-Hartman * drivers/hid/usbhid/usbmouse.c by Vojtech Pavlik * drivers/input/mouse/synaptics.c by Peter Osterlund * * Trademarks are the property of their respective owners. */ /* * There are three different types of Synaptics USB devices: Touchpads, * touchsticks (or trackpoints), and touchscreens. Touchpads are well supported * by this driver, touchstick support has not been tested much yet, and * touchscreens have not been tested at all. * * Up to three alternate settings are possible: * setting 0: one int endpoint for relative movement (used by usbhid.ko) * setting 1: one int endpoint for absolute finger position * setting 2 (cPad only): one int endpoint for absolute finger position and * two bulk endpoints for the display (in/out) * This driver uses setting 1. */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/usb.h> #include <linux/input.h> #include <linux/usb/input.h> #define USB_VENDOR_ID_SYNAPTICS 0x06cb #define USB_DEVICE_ID_SYNAPTICS_TP 0x0001 /* Synaptics USB TouchPad */ #define USB_DEVICE_ID_SYNAPTICS_INT_TP 0x0002 /* Integrated USB TouchPad */ #define USB_DEVICE_ID_SYNAPTICS_CPAD 0x0003 /* Synaptics cPad */ #define USB_DEVICE_ID_SYNAPTICS_TS 0x0006 /* Synaptics TouchScreen */ #define USB_DEVICE_ID_SYNAPTICS_STICK 0x0007 /* Synaptics USB Styk */ #define USB_DEVICE_ID_SYNAPTICS_WP 0x0008 /* Synaptics USB WheelPad */ #define USB_DEVICE_ID_SYNAPTICS_COMP_TP 0x0009 /* Composite USB TouchPad */ #define USB_DEVICE_ID_SYNAPTICS_WTP 0x0010 /* Wireless TouchPad */ #define USB_DEVICE_ID_SYNAPTICS_DPAD 0x0013 /* DisplayPad */ #define SYNUSB_TOUCHPAD (1 << 0) #define SYNUSB_STICK (1 << 1) #define SYNUSB_TOUCHSCREEN (1 << 2) #define SYNUSB_AUXDISPLAY (1 << 3) /* For cPad */ #define SYNUSB_COMBO (1 << 4) /* Composite device (TP + stick) */ #define SYNUSB_IO_ALWAYS (1 << 5) #define USB_DEVICE_SYNAPTICS(prod, kind) \ USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, \ USB_DEVICE_ID_SYNAPTICS_##prod), \ .driver_info = (kind), #define SYNUSB_RECV_SIZE 8 #define XMIN_NOMINAL 1472 #define XMAX_NOMINAL 5472 #define YMIN_NOMINAL 1408 #define YMAX_NOMINAL 4448 struct synusb { struct usb_device *udev; struct usb_interface *intf; struct urb *urb; unsigned char *data; /* serialize access to open/suspend */ struct mutex pm_mutex; bool is_open; /* input device related data structures */ struct input_dev *input; char name[128]; char phys[64]; /* characteristics of the device */ unsigned long flags; }; static void synusb_report_buttons(struct synusb *synusb) { struct input_dev *input_dev = synusb->input; input_report_key(input_dev, BTN_LEFT, synusb->data[1] & 0x04); input_report_key(input_dev, BTN_RIGHT, synusb->data[1] & 0x01); input_report_key(input_dev, BTN_MIDDLE, synusb->data[1] & 0x02); } static void synusb_report_stick(struct synusb *synusb) { struct input_dev *input_dev = synusb->input; int x, y; unsigned int pressure; pressure = synusb->data[6]; x = (s16)(be16_to_cpup((__be16 *)&synusb->data[2]) << 3) >> 7; y = (s16)(be16_to_cpup((__be16 *)&synusb->data[4]) << 3) >> 7; if (pressure > 0) { input_report_rel(input_dev, REL_X, x); input_report_rel(input_dev, REL_Y, -y); } input_report_abs(input_dev, ABS_PRESSURE, pressure); synusb_report_buttons(synusb); input_sync(input_dev); } static void synusb_report_touchpad(struct synusb *synusb) { struct input_dev *input_dev = synusb->input; unsigned int num_fingers, tool_width; unsigned int x, y; unsigned int pressure, w; pressure = synusb->data[6]; x = be16_to_cpup((__be16 *)&synusb->data[2]); y = be16_to_cpup((__be16 *)&synusb->data[4]); w = synusb->data[0] & 0x0f; if (pressure > 0) { num_fingers = 1; tool_width = 5; switch (w) { case 0 ... 1: num_fingers = 2 + w; break; case 2: /* pen, pretend its a finger */ break; case 4 ... 15: tool_width = w; break; } } else { num_fingers = 0; tool_width = 0; } /* * Post events * BTN_TOUCH has to be first as mousedev relies on it when doing * absolute -> relative conversion */ if (pressure > 30) input_report_key(input_dev, BTN_TOUCH, 1); if (pressure < 25) input_report_key(input_dev, BTN_TOUCH, 0); if (num_fingers > 0) { input_report_abs(input_dev, ABS_X, x); input_report_abs(input_dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - y); } input_report_abs(input_dev, ABS_PRESSURE, pressure); input_report_abs(input_dev, ABS_TOOL_WIDTH, tool_width); input_report_key(input_dev, BTN_TOOL_FINGER, num_fingers == 1); input_report_key(input_dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); input_report_key(input_dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); synusb_report_buttons(synusb); if (synusb->flags & SYNUSB_AUXDISPLAY) input_report_key(input_dev, BTN_MIDDLE, synusb->data[1] & 0x08); input_sync(input_dev); } static void synusb_irq(struct urb *urb) { struct synusb *synusb = urb->context; int error; /* Check our status in case we need to bail out early. */ switch (urb->status) { case 0: usb_mark_last_busy(synusb->udev); break; /* Device went away so don't keep trying to read from it. */ case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: return; default: goto resubmit; break; } if (synusb->flags & SYNUSB_STICK) synusb_report_stick(synusb); else synusb_report_touchpad(synusb); resubmit: error = usb_submit_urb(urb, GFP_ATOMIC); if (error && error != -EPERM) dev_err(&synusb->intf->dev, "%s - usb_submit_urb failed with result: %d", __func__, error); } static struct usb_endpoint_descriptor * synusb_get_in_endpoint(struct usb_host_interface *iface) { struct usb_endpoint_descriptor *endpoint; int i; for (i = 0; i < iface->desc.bNumEndpoints; ++i) { endpoint = &iface->endpoint[i].desc; if (usb_endpoint_is_int_in(endpoint)) { /* we found our interrupt in endpoint */ return endpoint; } } return NULL; } static int synusb_open(struct input_dev *dev) { struct synusb *synusb = input_get_drvdata(dev); int retval; retval = usb_autopm_get_interface(synusb->intf); if (retval) { dev_err(&synusb->intf->dev, "%s - usb_autopm_get_interface failed, error: %d\n", __func__, retval); return retval; } mutex_lock(&synusb->pm_mutex); retval = usb_submit_urb(synusb->urb, GFP_KERNEL); if (retval) { dev_err(&synusb->intf->dev, "%s - usb_submit_urb failed, error: %d\n", __func__, retval); retval = -EIO; goto out; } synusb->intf->needs_remote_wakeup = 1; synusb->is_open = true; out: mutex_unlock(&synusb->pm_mutex); usb_autopm_put_interface(synusb->intf); return retval; } static void synusb_close(struct input_dev *dev) { struct synusb *synusb = input_get_drvdata(dev); int autopm_error; autopm_error = usb_autopm_get_interface(synusb->intf); mutex_lock(&synusb->pm_mutex); usb_kill_urb(synusb->urb); synusb->intf->needs_remote_wakeup = 0; synusb->is_open = false; mutex_unlock(&synusb->pm_mutex); if (!autopm_error) usb_autopm_put_interface(synusb->intf); } static int synusb_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *udev = interface_to_usbdev(intf); struct usb_endpoint_descriptor *ep; struct synusb *synusb; struct input_dev *input_dev; unsigned int intf_num = intf->cur_altsetting->desc.bInterfaceNumber; unsigned int altsetting = min(intf->num_altsetting, 1U); int error; error = usb_set_interface(udev, intf_num, altsetting); if (error) { dev_err(&udev->dev, "Can not set alternate setting to %i, error: %i", altsetting, error); return error; } ep = synusb_get_in_endpoint(intf->cur_altsetting); if (!ep) return -ENODEV; synusb = kzalloc(sizeof(*synusb), GFP_KERNEL); input_dev = input_allocate_device(); if (!synusb || !input_dev) { error = -ENOMEM; goto err_free_mem; } synusb->udev = udev; synusb->intf = intf; synusb->input = input_dev; mutex_init(&synusb->pm_mutex); synusb->flags = id->driver_info; if (synusb->flags & SYNUSB_COMBO) { /* * This is a combo device, we need to set proper * capability, depending on the interface. */ synusb->flags |= intf_num == 1 ? SYNUSB_STICK : SYNUSB_TOUCHPAD; } synusb->urb = usb_alloc_urb(0, GFP_KERNEL); if (!synusb->urb) { error = -ENOMEM; goto err_free_mem; } synusb->data = usb_alloc_coherent(udev, SYNUSB_RECV_SIZE, GFP_KERNEL, &synusb->urb->transfer_dma); if (!synusb->data) { error = -ENOMEM; goto err_free_urb; } usb_fill_int_urb(synusb->urb, udev, usb_rcvintpipe(udev, ep->bEndpointAddress), synusb->data, SYNUSB_RECV_SIZE, synusb_irq, synusb, ep->bInterval); synusb->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; if (udev->manufacturer) strscpy(synusb->name, udev->manufacturer, sizeof(synusb->name)); if (udev->product) { if (udev->manufacturer) strlcat(synusb->name, " ", sizeof(synusb->name)); strlcat(synusb->name, udev->product, sizeof(synusb->name)); } if (!strlen(synusb->name)) snprintf(synusb->name, sizeof(synusb->name), "USB Synaptics Device %04x:%04x", le16_to_cpu(udev->descriptor.idVendor), le16_to_cpu(udev->descriptor.idProduct)); if (synusb->flags & SYNUSB_STICK) strlcat(synusb->name, " (Stick)", sizeof(synusb->name)); usb_make_path(udev, synusb->phys, sizeof(synusb->phys)); strlcat(synusb->phys, "/input0", sizeof(synusb->phys)); input_dev->name = synusb->name; input_dev->phys = synusb->phys; usb_to_input_id(udev, &input_dev->id); input_dev->dev.parent = &synusb->intf->dev; if (!(synusb->flags & SYNUSB_IO_ALWAYS)) { input_dev->open = synusb_open; input_dev->close = synusb_close; } input_set_drvdata(input_dev, synusb); __set_bit(EV_ABS, input_dev->evbit); __set_bit(EV_KEY, input_dev->evbit); if (synusb->flags & SYNUSB_STICK) { __set_bit(EV_REL, input_dev->evbit); __set_bit(REL_X, input_dev->relbit); __set_bit(REL_Y, input_dev->relbit); __set_bit(INPUT_PROP_POINTING_STICK, input_dev->propbit); input_set_abs_params(input_dev, ABS_PRESSURE, 0, 127, 0, 0); } else { input_set_abs_params(input_dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0); input_set_abs_params(input_dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0); input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); input_set_abs_params(input_dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); __set_bit(BTN_TOUCH, input_dev->keybit); __set_bit(BTN_TOOL_FINGER, input_dev->keybit); __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); } if (synusb->flags & SYNUSB_TOUCHSCREEN) __set_bit(INPUT_PROP_DIRECT, input_dev->propbit); else __set_bit(INPUT_PROP_POINTER, input_dev->propbit); __set_bit(BTN_LEFT, input_dev->keybit); __set_bit(BTN_RIGHT, input_dev->keybit); __set_bit(BTN_MIDDLE, input_dev->keybit); usb_set_intfdata(intf, synusb); if (synusb->flags & SYNUSB_IO_ALWAYS) { error = synusb_open(input_dev); if (error) goto err_free_dma; } error = input_register_device(input_dev); if (error) { dev_err(&udev->dev, "Failed to register input device, error %d\n", error); goto err_stop_io; } return 0; err_stop_io: if (synusb->flags & SYNUSB_IO_ALWAYS) synusb_close(synusb->input); err_free_dma: usb_free_coherent(udev, SYNUSB_RECV_SIZE, synusb->data, synusb->urb->transfer_dma); err_free_urb: usb_free_urb(synusb->urb); err_free_mem: input_free_device(input_dev); kfree(synusb); usb_set_intfdata(intf, NULL); return error; } static void synusb_disconnect(struct usb_interface *intf) { struct synusb *synusb = usb_get_intfdata(intf); struct usb_device *udev = interface_to_usbdev(intf); if (synusb->flags & SYNUSB_IO_ALWAYS) synusb_close(synusb->input); input_unregister_device(synusb->input); usb_free_coherent(udev, SYNUSB_RECV_SIZE, synusb->data, synusb->urb->transfer_dma); usb_free_urb(synusb->urb); kfree(synusb); usb_set_intfdata(intf, NULL); } static int synusb_suspend(struct usb_interface *intf, pm_message_t message) { struct synusb *synusb = usb_get_intfdata(intf); mutex_lock(&synusb->pm_mutex); usb_kill_urb(synusb->urb); mutex_unlock(&synusb->pm_mutex); return 0; } static int synusb_resume(struct usb_interface *intf) { struct synusb *synusb = usb_get_intfdata(intf); int retval = 0; mutex_lock(&synusb->pm_mutex); if ((synusb->is_open || (synusb->flags & SYNUSB_IO_ALWAYS)) && usb_submit_urb(synusb->urb, GFP_NOIO) < 0) { retval = -EIO; } mutex_unlock(&synusb->pm_mutex); return retval; } static int synusb_pre_reset(struct usb_interface *intf) { struct synusb *synusb = usb_get_intfdata(intf); mutex_lock(&synusb->pm_mutex); usb_kill_urb(synusb->urb); return 0; } static int synusb_post_reset(struct usb_interface *intf) { struct synusb *synusb = usb_get_intfdata(intf); int retval = 0; if ((synusb->is_open || (synusb->flags & SYNUSB_IO_ALWAYS)) && usb_submit_urb(synusb->urb, GFP_NOIO) < 0) { retval = -EIO; } mutex_unlock(&synusb->pm_mutex); return retval; } static int synusb_reset_resume(struct usb_interface *intf) { return synusb_resume(intf); } static const struct usb_device_id synusb_idtable[] = { { USB_DEVICE_SYNAPTICS(TP, SYNUSB_TOUCHPAD) }, { USB_DEVICE_SYNAPTICS(INT_TP, SYNUSB_TOUCHPAD) }, { USB_DEVICE_SYNAPTICS(CPAD, SYNUSB_TOUCHPAD | SYNUSB_AUXDISPLAY | SYNUSB_IO_ALWAYS) }, { USB_DEVICE_SYNAPTICS(TS, SYNUSB_TOUCHSCREEN) }, { USB_DEVICE_SYNAPTICS(STICK, SYNUSB_STICK) }, { USB_DEVICE_SYNAPTICS(WP, SYNUSB_TOUCHPAD) }, { USB_DEVICE_SYNAPTICS(COMP_TP, SYNUSB_COMBO) }, { USB_DEVICE_SYNAPTICS(WTP, SYNUSB_TOUCHPAD) }, { USB_DEVICE_SYNAPTICS(DPAD, SYNUSB_TOUCHPAD) }, { } }; MODULE_DEVICE_TABLE(usb, synusb_idtable); static struct usb_driver synusb_driver = { .name = "synaptics_usb", .probe = synusb_probe, .disconnect = synusb_disconnect, .id_table = synusb_idtable, .suspend = synusb_suspend, .resume = synusb_resume, .pre_reset = synusb_pre_reset, .post_reset = synusb_post_reset, .reset_resume = synusb_reset_resume, .supports_autosuspend = 1, }; module_usb_driver(synusb_driver); MODULE_AUTHOR("Rob Miller <rob@inpharmatica.co.uk>, " "Ron Lee <ron@debian.org>, " "Jan Steinhoff <cpad@jan-steinhoff.de>"); MODULE_DESCRIPTION("Synaptics USB device driver"); MODULE_LICENSE("GPL"); |
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2006 2007 2008 2009 2010 2011 2012 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 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_MMZONE_H #define _LINUX_MMZONE_H #ifndef __ASSEMBLY__ #ifndef __GENERATING_BOUNDS_H #include <linux/spinlock.h> #include <linux/list.h> #include <linux/list_nulls.h> #include <linux/wait.h> #include <linux/bitops.h> #include <linux/cache.h> #include <linux/threads.h> #include <linux/numa.h> #include <linux/init.h> #include <linux/seqlock.h> #include <linux/nodemask.h> #include <linux/pageblock-flags.h> #include <linux/page-flags-layout.h> #include <linux/atomic.h> #include <linux/mm_types.h> #include <linux/page-flags.h> #include <linux/local_lock.h> #include <linux/zswap.h> #include <asm/page.h> /* Free memory management - zoned buddy allocator. */ #ifndef CONFIG_ARCH_FORCE_MAX_ORDER #define MAX_PAGE_ORDER 10 #else #define MAX_PAGE_ORDER CONFIG_ARCH_FORCE_MAX_ORDER #endif #define MAX_ORDER_NR_PAGES (1 << MAX_PAGE_ORDER) #define IS_MAX_ORDER_ALIGNED(pfn) IS_ALIGNED(pfn, MAX_ORDER_NR_PAGES) #define NR_PAGE_ORDERS (MAX_PAGE_ORDER + 1) /* * PAGE_ALLOC_COSTLY_ORDER is the order at which allocations are deemed * costly to service. That is between allocation orders which should * coalesce naturally under reasonable reclaim pressure and those which * will not. */ #define PAGE_ALLOC_COSTLY_ORDER 3 enum migratetype { MIGRATE_UNMOVABLE, MIGRATE_MOVABLE, MIGRATE_RECLAIMABLE, MIGRATE_PCPTYPES, /* the number of types on the pcp lists */ MIGRATE_HIGHATOMIC = MIGRATE_PCPTYPES, #ifdef CONFIG_CMA /* * MIGRATE_CMA migration type is designed to mimic the way * ZONE_MOVABLE works. Only movable pages can be allocated * from MIGRATE_CMA pageblocks and page allocator never * implicitly change migration type of MIGRATE_CMA pageblock. * * The way to use it is to change migratetype of a range of * pageblocks to MIGRATE_CMA which can be done by * __free_pageblock_cma() function. */ MIGRATE_CMA, #endif #ifdef CONFIG_MEMORY_ISOLATION MIGRATE_ISOLATE, /* can't allocate from here */ #endif MIGRATE_TYPES }; /* In mm/page_alloc.c; keep in sync also with show_migration_types() there */ extern const char * const migratetype_names[MIGRATE_TYPES]; #ifdef CONFIG_CMA # define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA) # define is_migrate_cma_page(_page) (get_pageblock_migratetype(_page) == MIGRATE_CMA) # define is_migrate_cma_folio(folio, pfn) (MIGRATE_CMA == \ get_pfnblock_flags_mask(&folio->page, pfn, MIGRATETYPE_MASK)) #else # define is_migrate_cma(migratetype) false # define is_migrate_cma_page(_page) false # define is_migrate_cma_folio(folio, pfn) false #endif static inline bool is_migrate_movable(int mt) { return is_migrate_cma(mt) || mt == MIGRATE_MOVABLE; } /* * Check whether a migratetype can be merged with another migratetype. * * It is only mergeable when it can fall back to other migratetypes for * allocation. See fallbacks[MIGRATE_TYPES][3] in page_alloc.c. */ static inline bool migratetype_is_mergeable(int mt) { return mt < MIGRATE_PCPTYPES; } #define for_each_migratetype_order(order, type) \ for (order = 0; order < NR_PAGE_ORDERS; order++) \ for (type = 0; type < MIGRATE_TYPES; type++) extern int page_group_by_mobility_disabled; #define MIGRATETYPE_MASK ((1UL << PB_migratetype_bits) - 1) #define get_pageblock_migratetype(page) \ get_pfnblock_flags_mask(page, page_to_pfn(page), MIGRATETYPE_MASK) #define folio_migratetype(folio) \ get_pfnblock_flags_mask(&folio->page, folio_pfn(folio), \ MIGRATETYPE_MASK) struct free_area { struct list_head free_list[MIGRATE_TYPES]; unsigned long nr_free; }; struct pglist_data; #ifdef CONFIG_NUMA enum numa_stat_item { NUMA_HIT, /* allocated in intended node */ NUMA_MISS, /* allocated in non intended node */ NUMA_FOREIGN, /* was intended here, hit elsewhere */ NUMA_INTERLEAVE_HIT, /* interleaver preferred this zone */ NUMA_LOCAL, /* allocation from local node */ NUMA_OTHER, /* allocation from other node */ NR_VM_NUMA_EVENT_ITEMS }; #else #define NR_VM_NUMA_EVENT_ITEMS 0 #endif enum zone_stat_item { /* First 128 byte cacheline (assuming 64 bit words) */ NR_FREE_PAGES, NR_FREE_PAGES_BLOCKS, NR_ZONE_LRU_BASE, /* Used only for compaction and reclaim retry */ NR_ZONE_INACTIVE_ANON = NR_ZONE_LRU_BASE, NR_ZONE_ACTIVE_ANON, NR_ZONE_INACTIVE_FILE, NR_ZONE_ACTIVE_FILE, NR_ZONE_UNEVICTABLE, NR_ZONE_WRITE_PENDING, /* Count of dirty, writeback and unstable pages */ NR_MLOCK, /* mlock()ed pages found and moved off LRU */ /* Second 128 byte cacheline */ NR_BOUNCE, #if IS_ENABLED(CONFIG_ZSMALLOC) NR_ZSPAGES, /* allocated in zsmalloc */ #endif NR_FREE_CMA_PAGES, #ifdef CONFIG_UNACCEPTED_MEMORY NR_UNACCEPTED, #endif NR_VM_ZONE_STAT_ITEMS }; enum node_stat_item { NR_LRU_BASE, NR_INACTIVE_ANON = NR_LRU_BASE, /* must match order of LRU_[IN]ACTIVE */ NR_ACTIVE_ANON, /* " " " " " */ NR_INACTIVE_FILE, /* " " " " " */ NR_ACTIVE_FILE, /* " " " " " */ NR_UNEVICTABLE, /* " " " " " */ NR_SLAB_RECLAIMABLE_B, NR_SLAB_UNRECLAIMABLE_B, NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */ NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */ WORKINGSET_NODES, WORKINGSET_REFAULT_BASE, WORKINGSET_REFAULT_ANON = WORKINGSET_REFAULT_BASE, WORKINGSET_REFAULT_FILE, WORKINGSET_ACTIVATE_BASE, WORKINGSET_ACTIVATE_ANON = WORKINGSET_ACTIVATE_BASE, WORKINGSET_ACTIVATE_FILE, WORKINGSET_RESTORE_BASE, WORKINGSET_RESTORE_ANON = WORKINGSET_RESTORE_BASE, WORKINGSET_RESTORE_FILE, WORKINGSET_NODERECLAIM, NR_ANON_MAPPED, /* Mapped anonymous pages */ NR_FILE_MAPPED, /* pagecache pages mapped into pagetables. only modified from process context */ NR_FILE_PAGES, NR_FILE_DIRTY, NR_WRITEBACK, NR_WRITEBACK_TEMP, /* Writeback using temporary buffers */ NR_SHMEM, /* shmem pages (included tmpfs/GEM pages) */ NR_SHMEM_THPS, NR_SHMEM_PMDMAPPED, NR_FILE_THPS, NR_FILE_PMDMAPPED, NR_ANON_THPS, NR_VMSCAN_WRITE, NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */ NR_DIRTIED, /* page dirtyings since bootup */ NR_WRITTEN, /* page writings since bootup */ NR_THROTTLED_WRITTEN, /* NR_WRITTEN while reclaim throttled */ NR_KERNEL_MISC_RECLAIMABLE, /* reclaimable non-slab kernel pages */ NR_FOLL_PIN_ACQUIRED, /* via: pin_user_page(), gup flag: FOLL_PIN */ NR_FOLL_PIN_RELEASED, /* pages returned via unpin_user_page() */ NR_KERNEL_STACK_KB, /* measured in KiB */ #if IS_ENABLED(CONFIG_SHADOW_CALL_STACK) NR_KERNEL_SCS_KB, /* measured in KiB */ #endif NR_PAGETABLE, /* used for pagetables */ NR_SECONDARY_PAGETABLE, /* secondary pagetables, KVM & IOMMU */ #ifdef CONFIG_IOMMU_SUPPORT NR_IOMMU_PAGES, /* # of pages allocated by IOMMU */ #endif #ifdef CONFIG_SWAP NR_SWAPCACHE, #endif #ifdef CONFIG_NUMA_BALANCING PGPROMOTE_SUCCESS, /* promote successfully */ PGPROMOTE_CANDIDATE, /* candidate pages to promote */ #endif /* PGDEMOTE_*: pages demoted */ PGDEMOTE_KSWAPD, PGDEMOTE_DIRECT, PGDEMOTE_KHUGEPAGED, PGDEMOTE_PROACTIVE, #ifdef CONFIG_HUGETLB_PAGE NR_HUGETLB, #endif NR_BALLOON_PAGES, NR_VM_NODE_STAT_ITEMS }; /* * Returns true if the item should be printed in THPs (/proc/vmstat * currently prints number of anon, file and shmem THPs. But the item * is charged in pages). */ static __always_inline bool vmstat_item_print_in_thp(enum node_stat_item item) { if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) return false; return item == NR_ANON_THPS || item == NR_FILE_THPS || item == NR_SHMEM_THPS || item == NR_SHMEM_PMDMAPPED || item == NR_FILE_PMDMAPPED; } /* * Returns true if the value is measured in bytes (most vmstat values are * measured in pages). This defines the API part, the internal representation * might be different. */ static __always_inline bool vmstat_item_in_bytes(int idx) { /* * Global and per-node slab counters track slab pages. * It's expected that changes are multiples of PAGE_SIZE. * Internally values are stored in pages. * * Per-memcg and per-lruvec counters track memory, consumed * by individual slab objects. These counters are actually * byte-precise. */ return (idx == NR_SLAB_RECLAIMABLE_B || idx == NR_SLAB_UNRECLAIMABLE_B); } /* * We do arithmetic on the LRU lists in various places in the code, * so it is important to keep the active lists LRU_ACTIVE higher in * the array than the corresponding inactive lists, and to keep * the *_FILE lists LRU_FILE higher than the corresponding _ANON lists. * * This has to be kept in sync with the statistics in zone_stat_item * above and the descriptions in vmstat_text in mm/vmstat.c */ #define LRU_BASE 0 #define LRU_ACTIVE 1 #define LRU_FILE 2 enum lru_list { LRU_INACTIVE_ANON = LRU_BASE, LRU_ACTIVE_ANON = LRU_BASE + LRU_ACTIVE, LRU_INACTIVE_FILE = LRU_BASE + LRU_FILE, LRU_ACTIVE_FILE = LRU_BASE + LRU_FILE + LRU_ACTIVE, LRU_UNEVICTABLE, NR_LRU_LISTS }; enum vmscan_throttle_state { VMSCAN_THROTTLE_WRITEBACK, VMSCAN_THROTTLE_ISOLATED, VMSCAN_THROTTLE_NOPROGRESS, VMSCAN_THROTTLE_CONGESTED, NR_VMSCAN_THROTTLE, }; #define for_each_lru(lru) for (lru = 0; lru < NR_LRU_LISTS; lru++) #define for_each_evictable_lru(lru) for (lru = 0; lru <= LRU_ACTIVE_FILE; lru++) static inline bool is_file_lru(enum lru_list lru) { return (lru == LRU_INACTIVE_FILE || lru == LRU_ACTIVE_FILE); } static inline bool is_active_lru(enum lru_list lru) { return (lru == LRU_ACTIVE_ANON || lru == LRU_ACTIVE_FILE); } #define WORKINGSET_ANON 0 #define WORKINGSET_FILE 1 #define ANON_AND_FILE 2 enum lruvec_flags { /* * An lruvec has many dirty pages backed by a congested BDI: * 1. LRUVEC_CGROUP_CONGESTED is set by cgroup-level reclaim. * It can be cleared by cgroup reclaim or kswapd. * 2. LRUVEC_NODE_CONGESTED is set by kswapd node-level reclaim. * It can only be cleared by kswapd. * * Essentially, kswapd can unthrottle an lruvec throttled by cgroup * reclaim, but not vice versa. This only applies to the root cgroup. * The goal is to prevent cgroup reclaim on the root cgroup (e.g. * memory.reclaim) to unthrottle an unbalanced node (that was throttled * by kswapd). */ LRUVEC_CGROUP_CONGESTED, LRUVEC_NODE_CONGESTED, }; #endif /* !__GENERATING_BOUNDS_H */ /* * Evictable folios are divided into multiple generations. The youngest and the * oldest generation numbers, max_seq and min_seq, are monotonically increasing. * They form a sliding window of a variable size [MIN_NR_GENS, MAX_NR_GENS]. An * offset within MAX_NR_GENS, i.e., gen, indexes the LRU list of the * corresponding generation. The gen counter in folio->flags stores gen+1 while * a folio is on one of lrugen->folios[]. Otherwise it stores 0. * * After a folio is faulted in, the aging needs to check the accessed bit at * least twice before handing this folio over to the eviction. The first check * clears the accessed bit from the initial fault; the second check makes sure * this folio hasn't been used since then. This process, AKA second chance, * requires a minimum of two generations, hence MIN_NR_GENS. And to maintain ABI * compatibility with the active/inactive LRU, e.g., /proc/vmstat, these two * generations are considered active; the rest of generations, if they exist, * are considered inactive. See lru_gen_is_active(). * * PG_active is always cleared while a folio is on one of lrugen->folios[] so * that the sliding window needs not to worry about it. And it's set again when * a folio considered active is isolated for non-reclaiming purposes, e.g., * migration. See lru_gen_add_folio() and lru_gen_del_folio(). * * MAX_NR_GENS is set to 4 so that the multi-gen LRU can support twice the * number of categories of the active/inactive LRU when keeping track of * accesses through page tables. This requires order_base_2(MAX_NR_GENS+1) bits * in folio->flags, masked by LRU_GEN_MASK. */ #define MIN_NR_GENS 2U #define MAX_NR_GENS 4U /* * Each generation is divided into multiple tiers. A folio accessed N times * through file descriptors is in tier order_base_2(N). A folio in the first * tier (N=0,1) is marked by PG_referenced unless it was faulted in through page * tables or read ahead. A folio in the last tier (MAX_NR_TIERS-1) is marked by * PG_workingset. A folio in any other tier (1<N<5) between the first and last * is marked by additional bits of LRU_REFS_WIDTH in folio->flags. * * In contrast to moving across generations which requires the LRU lock, moving * across tiers only involves atomic operations on folio->flags and therefore * has a negligible cost in the buffered access path. In the eviction path, * comparisons of refaulted/(evicted+protected) from the first tier and the rest * infer whether folios accessed multiple times through file descriptors are * statistically hot and thus worth protecting. * * MAX_NR_TIERS is set to 4 so that the multi-gen LRU can support twice the * number of categories of the active/inactive LRU when keeping track of * accesses through file descriptors. This uses MAX_NR_TIERS-2 spare bits in * folio->flags, masked by LRU_REFS_MASK. */ #define MAX_NR_TIERS 4U #ifndef __GENERATING_BOUNDS_H #define LRU_GEN_MASK ((BIT(LRU_GEN_WIDTH) - 1) << LRU_GEN_PGOFF) #define LRU_REFS_MASK ((BIT(LRU_REFS_WIDTH) - 1) << LRU_REFS_PGOFF) /* * For folios accessed multiple times through file descriptors, * lru_gen_inc_refs() sets additional bits of LRU_REFS_WIDTH in folio->flags * after PG_referenced, then PG_workingset after LRU_REFS_WIDTH. After all its * bits are set, i.e., LRU_REFS_FLAGS|BIT(PG_workingset), a folio is lazily * promoted into the second oldest generation in the eviction path. And when * folio_inc_gen() does that, it clears LRU_REFS_FLAGS so that * lru_gen_inc_refs() can start over. Note that for this case, LRU_REFS_MASK is * only valid when PG_referenced is set. * * For folios accessed multiple times through page tables, folio_update_gen() * from a page table walk or lru_gen_set_refs() from a rmap walk sets * PG_referenced after the accessed bit is cleared for the first time. * Thereafter, those two paths set PG_workingset and promote folios to the * youngest generation. Like folio_inc_gen(), folio_update_gen() also clears * PG_referenced. Note that for this case, LRU_REFS_MASK is not used. * * For both cases above, after PG_workingset is set on a folio, it remains until * this folio is either reclaimed, or "deactivated" by lru_gen_clear_refs(). It * can be set again if lru_gen_test_recent() returns true upon a refault. */ #define LRU_REFS_FLAGS (LRU_REFS_MASK | BIT(PG_referenced)) struct lruvec; struct page_vma_mapped_walk; #ifdef CONFIG_LRU_GEN enum { LRU_GEN_ANON, LRU_GEN_FILE, }; enum { LRU_GEN_CORE, LRU_GEN_MM_WALK, LRU_GEN_NONLEAF_YOUNG, NR_LRU_GEN_CAPS }; #define MIN_LRU_BATCH BITS_PER_LONG #define MAX_LRU_BATCH (MIN_LRU_BATCH * 64) /* whether to keep historical stats from evicted generations */ #ifdef CONFIG_LRU_GEN_STATS #define NR_HIST_GENS MAX_NR_GENS #else #define NR_HIST_GENS 1U #endif /* * The youngest generation number is stored in max_seq for both anon and file * types as they are aged on an equal footing. The oldest generation numbers are * stored in min_seq[] separately for anon and file types so that they can be * incremented independently. Ideally min_seq[] are kept in sync when both anon * and file types are evictable. However, to adapt to situations like extreme * swappiness, they are allowed to be out of sync by at most * MAX_NR_GENS-MIN_NR_GENS-1. * * The number of pages in each generation is eventually consistent and therefore * can be transiently negative when reset_batch_size() is pending. */ struct lru_gen_folio { /* the aging increments the youngest generation number */ unsigned long max_seq; /* the eviction increments the oldest generation numbers */ unsigned long min_seq[ANON_AND_FILE]; /* the birth time of each generation in jiffies */ unsigned long timestamps[MAX_NR_GENS]; /* the multi-gen LRU lists, lazily sorted on eviction */ struct list_head folios[MAX_NR_GENS][ANON_AND_FILE][MAX_NR_ZONES]; /* the multi-gen LRU sizes, eventually consistent */ long nr_pages[MAX_NR_GENS][ANON_AND_FILE][MAX_NR_ZONES]; /* the exponential moving average of refaulted */ unsigned long avg_refaulted[ANON_AND_FILE][MAX_NR_TIERS]; /* the exponential moving average of evicted+protected */ unsigned long avg_total[ANON_AND_FILE][MAX_NR_TIERS]; /* can only be modified under the LRU lock */ unsigned long protected[NR_HIST_GENS][ANON_AND_FILE][MAX_NR_TIERS]; /* can be modified without holding the LRU lock */ atomic_long_t evicted[NR_HIST_GENS][ANON_AND_FILE][MAX_NR_TIERS]; atomic_long_t refaulted[NR_HIST_GENS][ANON_AND_FILE][MAX_NR_TIERS]; /* whether the multi-gen LRU is enabled */ bool enabled; /* the memcg generation this lru_gen_folio belongs to */ u8 gen; /* the list segment this lru_gen_folio belongs to */ u8 seg; /* per-node lru_gen_folio list for global reclaim */ struct hlist_nulls_node list; }; enum { MM_LEAF_TOTAL, /* total leaf entries */ MM_LEAF_YOUNG, /* young leaf entries */ MM_NONLEAF_FOUND, /* non-leaf entries found in Bloom filters */ MM_NONLEAF_ADDED, /* non-leaf entries added to Bloom filters */ NR_MM_STATS }; /* double-buffering Bloom filters */ #define NR_BLOOM_FILTERS 2 struct lru_gen_mm_state { /* synced with max_seq after each iteration */ unsigned long seq; /* where the current iteration continues after */ struct list_head *head; /* where the last iteration ended before */ struct list_head *tail; /* Bloom filters flip after each iteration */ unsigned long *filters[NR_BLOOM_FILTERS]; /* the mm stats for debugging */ unsigned long stats[NR_HIST_GENS][NR_MM_STATS]; }; struct lru_gen_mm_walk { /* the lruvec under reclaim */ struct lruvec *lruvec; /* max_seq from lru_gen_folio: can be out of date */ unsigned long seq; /* the next address within an mm to scan */ unsigned long next_addr; /* to batch promoted pages */ int nr_pages[MAX_NR_GENS][ANON_AND_FILE][MAX_NR_ZONES]; /* to batch the mm stats */ int mm_stats[NR_MM_STATS]; /* total batched items */ int batched; int swappiness; bool force_scan; }; /* * For each node, memcgs are divided into two generations: the old and the * young. For each generation, memcgs are randomly sharded into multiple bins * to improve scalability. For each bin, the hlist_nulls is virtually divided * into three segments: the head, the tail and the default. * * An onlining memcg is added to the tail of a random bin in the old generation. * The eviction starts at the head of a random bin in the old generation. The * per-node memcg generation counter, whose reminder (mod MEMCG_NR_GENS) indexes * the old generation, is incremented when all its bins become empty. * * There are four operations: * 1. MEMCG_LRU_HEAD, which moves a memcg to the head of a random bin in its * current generation (old or young) and updates its "seg" to "head"; * 2. MEMCG_LRU_TAIL, which moves a memcg to the tail of a random bin in its * current generation (old or young) and updates its "seg" to "tail"; * 3. MEMCG_LRU_OLD, which moves a memcg to the head of a random bin in the old * generation, updates its "gen" to "old" and resets its "seg" to "default"; * 4. MEMCG_LRU_YOUNG, which moves a memcg to the tail of a random bin in the * young generation, updates its "gen" to "young" and resets its "seg" to * "default". * * The events that trigger the above operations are: * 1. Exceeding the soft limit, which triggers MEMCG_LRU_HEAD; * 2. The first attempt to reclaim a memcg below low, which triggers * MEMCG_LRU_TAIL; * 3. The first attempt to reclaim a memcg offlined or below reclaimable size * threshold, which triggers MEMCG_LRU_TAIL; * 4. The second attempt to reclaim a memcg offlined or below reclaimable size * threshold, which triggers MEMCG_LRU_YOUNG; * 5. Attempting to reclaim a memcg below min, which triggers MEMCG_LRU_YOUNG; * 6. Finishing the aging on the eviction path, which triggers MEMCG_LRU_YOUNG; * 7. Offlining a memcg, which triggers MEMCG_LRU_OLD. * * Notes: * 1. Memcg LRU only applies to global reclaim, and the round-robin incrementing * of their max_seq counters ensures the eventual fairness to all eligible * memcgs. For memcg reclaim, it still relies on mem_cgroup_iter(). * 2. There are only two valid generations: old (seq) and young (seq+1). * MEMCG_NR_GENS is set to three so that when reading the generation counter * locklessly, a stale value (seq-1) does not wraparound to young. */ #define MEMCG_NR_GENS 3 #define MEMCG_NR_BINS 8 struct lru_gen_memcg { /* the per-node memcg generation counter */ unsigned long seq; /* each memcg has one lru_gen_folio per node */ unsigned long nr_memcgs[MEMCG_NR_GENS]; /* per-node lru_gen_folio list for global reclaim */ struct hlist_nulls_head fifo[MEMCG_NR_GENS][MEMCG_NR_BINS]; /* protects the above */ spinlock_t lock; }; void lru_gen_init_pgdat(struct pglist_data *pgdat); void lru_gen_init_lruvec(struct lruvec *lruvec); bool lru_gen_look_around(struct page_vma_mapped_walk *pvmw); void lru_gen_init_memcg(struct mem_cgroup *memcg); void lru_gen_exit_memcg(struct mem_cgroup *memcg); void lru_gen_online_memcg(struct mem_cgroup *memcg); void lru_gen_offline_memcg(struct mem_cgroup *memcg); void lru_gen_release_memcg(struct mem_cgroup *memcg); void lru_gen_soft_reclaim(struct mem_cgroup *memcg, int nid); #else /* !CONFIG_LRU_GEN */ static inline void lru_gen_init_pgdat(struct pglist_data *pgdat) { } static inline void lru_gen_init_lruvec(struct lruvec *lruvec) { } static inline bool lru_gen_look_around(struct page_vma_mapped_walk *pvmw) { return false; } static inline void lru_gen_init_memcg(struct mem_cgroup *memcg) { } static inline void lru_gen_exit_memcg(struct mem_cgroup *memcg) { } static inline void lru_gen_online_memcg(struct mem_cgroup *memcg) { } static inline void lru_gen_offline_memcg(struct mem_cgroup *memcg) { } static inline void lru_gen_release_memcg(struct mem_cgroup *memcg) { } static inline void lru_gen_soft_reclaim(struct mem_cgroup *memcg, int nid) { } #endif /* CONFIG_LRU_GEN */ struct lruvec { struct list_head lists[NR_LRU_LISTS]; /* per lruvec lru_lock for memcg */ spinlock_t lru_lock; /* * These track the cost of reclaiming one LRU - file or anon - * over the other. As the observed cost of reclaiming one LRU * increases, the reclaim scan balance tips toward the other. */ unsigned long anon_cost; unsigned long file_cost; /* Non-resident age, driven by LRU movement */ atomic_long_t nonresident_age; /* Refaults at the time of last reclaim cycle */ unsigned long refaults[ANON_AND_FILE]; /* Various lruvec state flags (enum lruvec_flags) */ unsigned long flags; #ifdef CONFIG_LRU_GEN /* evictable pages divided into generations */ struct lru_gen_folio lrugen; #ifdef CONFIG_LRU_GEN_WALKS_MMU /* to concurrently iterate lru_gen_mm_list */ struct lru_gen_mm_state mm_state; #endif #endif /* CONFIG_LRU_GEN */ #ifdef CONFIG_MEMCG struct pglist_data *pgdat; #endif struct zswap_lruvec_state zswap_lruvec_state; }; /* Isolate for asynchronous migration */ #define ISOLATE_ASYNC_MIGRATE ((__force isolate_mode_t)0x4) /* Isolate unevictable pages */ #define ISOLATE_UNEVICTABLE ((__force isolate_mode_t)0x8) /* LRU Isolation modes. */ typedef unsigned __bitwise isolate_mode_t; enum zone_watermarks { WMARK_MIN, WMARK_LOW, WMARK_HIGH, WMARK_PROMO, NR_WMARK }; /* * One per migratetype for each PAGE_ALLOC_COSTLY_ORDER. Two additional lists * are added for THP. One PCP list is used by GPF_MOVABLE, and the other PCP list * is used by GFP_UNMOVABLE and GFP_RECLAIMABLE. */ #ifdef CONFIG_TRANSPARENT_HUGEPAGE #define NR_PCP_THP 2 #else #define NR_PCP_THP 0 #endif #define NR_LOWORDER_PCP_LISTS (MIGRATE_PCPTYPES * (PAGE_ALLOC_COSTLY_ORDER + 1)) #define NR_PCP_LISTS (NR_LOWORDER_PCP_LISTS + NR_PCP_THP) /* * Flags used in pcp->flags field. * * PCPF_PREV_FREE_HIGH_ORDER: a high-order page is freed in the * previous page freeing. To avoid to drain PCP for an accident * high-order page freeing. * * PCPF_FREE_HIGH_BATCH: preserve "pcp->batch" pages in PCP before * draining PCP for consecutive high-order pages freeing without * allocation if data cache slice of CPU is large enough. To reduce * zone lock contention and keep cache-hot pages reusing. */ #define PCPF_PREV_FREE_HIGH_ORDER BIT(0) #define PCPF_FREE_HIGH_BATCH BIT(1) struct per_cpu_pages { spinlock_t lock; /* Protects lists field */ int count; /* number of pages in the list */ int high; /* high watermark, emptying needed */ int high_min; /* min high watermark */ int high_max; /* max high watermark */ int batch; /* chunk size for buddy add/remove */ u8 flags; /* protected by pcp->lock */ u8 alloc_factor; /* batch scaling factor during allocate */ #ifdef CONFIG_NUMA u8 expire; /* When 0, remote pagesets are drained */ #endif short free_count; /* consecutive free count */ /* Lists of pages, one per migrate type stored on the pcp-lists */ struct list_head lists[NR_PCP_LISTS]; } ____cacheline_aligned_in_smp; struct per_cpu_zonestat { #ifdef CONFIG_SMP s8 vm_stat_diff[NR_VM_ZONE_STAT_ITEMS]; s8 stat_threshold; #endif #ifdef CONFIG_NUMA /* * Low priority inaccurate counters that are only folded * on demand. Use a large type to avoid the overhead of * folding during refresh_cpu_vm_stats. */ unsigned long vm_numa_event[NR_VM_NUMA_EVENT_ITEMS]; #endif }; struct per_cpu_nodestat { s8 stat_threshold; s8 vm_node_stat_diff[NR_VM_NODE_STAT_ITEMS]; }; #endif /* !__GENERATING_BOUNDS.H */ enum zone_type { /* * ZONE_DMA and ZONE_DMA32 are used when there are peripherals not able * to DMA to all of the addressable memory (ZONE_NORMAL). * On architectures where this area covers the whole 32 bit address * space ZONE_DMA32 is used. ZONE_DMA is left for the ones with smaller * DMA addressing constraints. This distinction is important as a 32bit * DMA mask is assumed when ZONE_DMA32 is defined. Some 64-bit * platforms may need both zones as they support peripherals with * different DMA addressing limitations. */ #ifdef CONFIG_ZONE_DMA ZONE_DMA, #endif #ifdef CONFIG_ZONE_DMA32 ZONE_DMA32, #endif /* * Normal addressable memory is in ZONE_NORMAL. DMA operations can be * performed on pages in ZONE_NORMAL if the DMA devices support * transfers to all addressable memory. */ ZONE_NORMAL, #ifdef CONFIG_HIGHMEM /* * A memory area that is only addressable by the kernel through * mapping portions into its own address space. This is for example * used by i386 to allow the kernel to address the memory beyond * 900MB. The kernel will set up special mappings (page * table entries on i386) for each page that the kernel needs to * access. */ ZONE_HIGHMEM, #endif /* * ZONE_MOVABLE is similar to ZONE_NORMAL, except that it contains * movable pages with few exceptional cases described below. Main use * cases for ZONE_MOVABLE are to make memory offlining/unplug more * likely to succeed, and to locally limit unmovable allocations - e.g., * to increase the number of THP/huge pages. Notable special cases are: * * 1. Pinned pages: (long-term) pinning of movable pages might * essentially turn such pages unmovable. Therefore, we do not allow * pinning long-term pages in ZONE_MOVABLE. When pages are pinned and * faulted, they come from the right zone right away. However, it is * still possible that address space already has pages in * ZONE_MOVABLE at the time when pages are pinned (i.e. user has * touches that memory before pinning). In such case we migrate them * to a different zone. When migration fails - pinning fails. * 2. memblock allocations: kernelcore/movablecore setups might create * situations where ZONE_MOVABLE contains unmovable allocations * after boot. Memory offlining and allocations fail early. * 3. Memory holes: kernelcore/movablecore setups might create very rare * situations where ZONE_MOVABLE contains memory holes after boot, * for example, if we have sections that are only partially * populated. Memory offlining and allocations fail early. * 4. PG_hwpoison pages: while poisoned pages can be skipped during * memory offlining, such pages cannot be allocated. * 5. Unmovable PG_offline pages: in paravirtualized environments, * hotplugged memory blocks might only partially be managed by the * buddy (e.g., via XEN-balloon, Hyper-V balloon, virtio-mem). The * parts not manged by the buddy are unmovable PG_offline pages. In * some cases (virtio-mem), such pages can be skipped during * memory offlining, however, cannot be moved/allocated. These * techniques might use alloc_contig_range() to hide previously * exposed pages from the buddy again (e.g., to implement some sort * of memory unplug in virtio-mem). * 6. ZERO_PAGE(0), kernelcore/movablecore setups might create * situations where ZERO_PAGE(0) which is allocated differently * on different platforms may end up in a movable zone. ZERO_PAGE(0) * cannot be migrated. * 7. Memory-hotplug: when using memmap_on_memory and onlining the * memory to the MOVABLE zone, the vmemmap pages are also placed in * such zone. Such pages cannot be really moved around as they are * self-stored in the range, but they are treated as movable when * the range they describe is about to be offlined. * * In general, no unmovable allocations that degrade memory offlining * should end up in ZONE_MOVABLE. Allocators (like alloc_contig_range()) * have to expect that migrating pages in ZONE_MOVABLE can fail (even * if has_unmovable_pages() states that there are no unmovable pages, * there can be false negatives). */ ZONE_MOVABLE, #ifdef CONFIG_ZONE_DEVICE ZONE_DEVICE, #endif __MAX_NR_ZONES }; #ifndef __GENERATING_BOUNDS_H #define ASYNC_AND_SYNC 2 struct zone { /* Read-mostly fields */ /* zone watermarks, access with *_wmark_pages(zone) macros */ unsigned long _watermark[NR_WMARK]; unsigned long watermark_boost; unsigned long nr_reserved_highatomic; unsigned long nr_free_highatomic; /* * We don't know if the memory that we're going to allocate will be * freeable or/and it will be released eventually, so to avoid totally * wasting several GB of ram we must reserve some of the lower zone * memory (otherwise we risk to run OOM on the lower zones despite * there being tons of freeable ram on the higher zones). This array is * recalculated at runtime if the sysctl_lowmem_reserve_ratio sysctl * changes. */ long lowmem_reserve[MAX_NR_ZONES]; #ifdef CONFIG_NUMA int node; #endif struct pglist_data *zone_pgdat; struct per_cpu_pages __percpu *per_cpu_pageset; struct per_cpu_zonestat __percpu *per_cpu_zonestats; /* * the high and batch values are copied to individual pagesets for * faster access */ int pageset_high_min; int pageset_high_max; int pageset_batch; #ifndef CONFIG_SPARSEMEM /* * Flags for a pageblock_nr_pages block. See pageblock-flags.h. * In SPARSEMEM, this map is stored in struct mem_section */ unsigned long *pageblock_flags; #endif /* CONFIG_SPARSEMEM */ /* zone_start_pfn == zone_start_paddr >> PAGE_SHIFT */ unsigned long zone_start_pfn; /* * spanned_pages is the total pages spanned by the zone, including * holes, which is calculated as: * spanned_pages = zone_end_pfn - zone_start_pfn; * * present_pages is physical pages existing within the zone, which * is calculated as: * present_pages = spanned_pages - absent_pages(pages in holes); * * present_early_pages is present pages existing within the zone * located on memory available since early boot, excluding hotplugged * memory. * * managed_pages is present pages managed by the buddy system, which * is calculated as (reserved_pages includes pages allocated by the * bootmem allocator): * managed_pages = present_pages - reserved_pages; * * cma pages is present pages that are assigned for CMA use * (MIGRATE_CMA). * * So present_pages may be used by memory hotplug or memory power * management logic to figure out unmanaged pages by checking * (present_pages - managed_pages). And managed_pages should be used * by page allocator and vm scanner to calculate all kinds of watermarks * and thresholds. * * Locking rules: * * zone_start_pfn and spanned_pages are protected by span_seqlock. * It is a seqlock because it has to be read outside of zone->lock, * and it is done in the main allocator path. But, it is written * quite infrequently. * * The span_seq lock is declared along with zone->lock because it is * frequently read in proximity to zone->lock. It's good to * give them a chance of being in the same cacheline. * * Write access to present_pages at runtime should be protected by * mem_hotplug_begin/done(). Any reader who can't tolerant drift of * present_pages should use get_online_mems() to get a stable value. */ atomic_long_t managed_pages; unsigned long spanned_pages; unsigned long present_pages; #if defined(CONFIG_MEMORY_HOTPLUG) unsigned long present_early_pages; #endif #ifdef CONFIG_CMA unsigned long cma_pages; #endif const char *name; #ifdef CONFIG_MEMORY_ISOLATION /* * Number of isolated pageblock. It is used to solve incorrect * freepage counting problem due to racy retrieving migratetype * of pageblock. Protected by zone->lock. */ unsigned long nr_isolate_pageblock; #endif #ifdef CONFIG_MEMORY_HOTPLUG /* see spanned/present_pages for more description */ seqlock_t span_seqlock; #endif int initialized; /* Write-intensive fields used from the page allocator */ CACHELINE_PADDING(_pad1_); /* free areas of different sizes */ struct free_area free_area[NR_PAGE_ORDERS]; #ifdef CONFIG_UNACCEPTED_MEMORY /* Pages to be accepted. All pages on the list are MAX_PAGE_ORDER */ struct list_head unaccepted_pages; /* To be called once the last page in the zone is accepted */ struct work_struct unaccepted_cleanup; #endif /* zone flags, see below */ unsigned long flags; /* Primarily protects free_area */ spinlock_t lock; /* Pages to be freed when next trylock succeeds */ struct llist_head trylock_free_pages; /* Write-intensive fields used by compaction and vmstats. */ CACHELINE_PADDING(_pad2_); /* * When free pages are below this point, additional steps are taken * when reading the number of free pages to avoid per-cpu counter * drift allowing watermarks to be breached */ unsigned long percpu_drift_mark; #if defined CONFIG_COMPACTION || defined CONFIG_CMA /* pfn where compaction free scanner should start */ unsigned long compact_cached_free_pfn; /* pfn where compaction migration scanner should start */ unsigned long compact_cached_migrate_pfn[ASYNC_AND_SYNC]; unsigned long compact_init_migrate_pfn; unsigned long compact_init_free_pfn; #endif #ifdef CONFIG_COMPACTION /* * On compaction failure, 1<<compact_defer_shift compactions * are skipped before trying again. The number attempted since * last failure is tracked with compact_considered. * compact_order_failed is the minimum compaction failed order. */ unsigned int compact_considered; unsigned int compact_defer_shift; int compact_order_failed; #endif #if defined CONFIG_COMPACTION || defined CONFIG_CMA /* Set to true when the PG_migrate_skip bits should be cleared */ bool compact_blockskip_flush; #endif bool contiguous; CACHELINE_PADDING(_pad3_); /* Zone statistics */ atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; atomic_long_t vm_numa_event[NR_VM_NUMA_EVENT_ITEMS]; } ____cacheline_internodealigned_in_smp; enum pgdat_flags { PGDAT_DIRTY, /* reclaim scanning has recently found * many dirty file pages at the tail * of the LRU. */ PGDAT_WRITEBACK, /* reclaim scanning has recently found * many pages under writeback */ PGDAT_RECLAIM_LOCKED, /* prevents concurrent reclaim */ }; enum zone_flags { ZONE_BOOSTED_WATERMARK, /* zone recently boosted watermarks. * Cleared when kswapd is woken. */ ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */ ZONE_BELOW_HIGH, /* zone is below high watermark. */ }; static inline unsigned long wmark_pages(const struct zone *z, enum zone_watermarks w) { return z->_watermark[w] + z->watermark_boost; } static inline unsigned long min_wmark_pages(const struct zone *z) { return wmark_pages(z, WMARK_MIN); } static inline unsigned long low_wmark_pages(const struct zone *z) { return wmark_pages(z, WMARK_LOW); } static inline unsigned long high_wmark_pages(const struct zone *z) { return wmark_pages(z, WMARK_HIGH); } static inline unsigned long promo_wmark_pages(const struct zone *z) { return wmark_pages(z, WMARK_PROMO); } static inline unsigned long zone_managed_pages(struct zone *zone) { return (unsigned long)atomic_long_read(&zone->managed_pages); } static inline unsigned long zone_cma_pages(struct zone *zone) { #ifdef CONFIG_CMA return zone->cma_pages; #else return 0; #endif } static inline unsigned long zone_end_pfn(const struct zone *zone) { return zone->zone_start_pfn + zone->spanned_pages; } static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn) { return zone->zone_start_pfn <= pfn && pfn < zone_end_pfn(zone); } static inline bool zone_is_initialized(struct zone *zone) { return zone->initialized; } static inline bool zone_is_empty(struct zone *zone) { return zone->spanned_pages == 0; } #ifndef BUILD_VDSO32_64 /* * The zone field is never updated after free_area_init_core() * sets it, so none of the operations on it need to be atomic. */ /* Page flags: | [SECTION] | [NODE] | ZONE | [LAST_CPUPID] | ... | FLAGS | */ #define SECTIONS_PGOFF ((sizeof(unsigned long)*8) - SECTIONS_WIDTH) #define NODES_PGOFF (SECTIONS_PGOFF - NODES_WIDTH) #define ZONES_PGOFF (NODES_PGOFF - ZONES_WIDTH) #define LAST_CPUPID_PGOFF (ZONES_PGOFF - LAST_CPUPID_WIDTH) #define KASAN_TAG_PGOFF (LAST_CPUPID_PGOFF - KASAN_TAG_WIDTH) #define LRU_GEN_PGOFF (KASAN_TAG_PGOFF - LRU_GEN_WIDTH) #define LRU_REFS_PGOFF (LRU_GEN_PGOFF - LRU_REFS_WIDTH) /* * Define the bit shifts to access each section. For non-existent * sections we define the shift as 0; that plus a 0 mask ensures * the compiler will optimise away reference to them. */ #define SECTIONS_PGSHIFT (SECTIONS_PGOFF * (SECTIONS_WIDTH != 0)) #define NODES_PGSHIFT (NODES_PGOFF * (NODES_WIDTH != 0)) #define ZONES_PGSHIFT (ZONES_PGOFF * (ZONES_WIDTH != 0)) #define LAST_CPUPID_PGSHIFT (LAST_CPUPID_PGOFF * (LAST_CPUPID_WIDTH != 0)) #define KASAN_TAG_PGSHIFT (KASAN_TAG_PGOFF * (KASAN_TAG_WIDTH != 0)) /* NODE:ZONE or SECTION:ZONE is used to ID a zone for the buddy allocator */ #ifdef NODE_NOT_IN_PAGE_FLAGS #define ZONEID_SHIFT (SECTIONS_SHIFT + ZONES_SHIFT) #define ZONEID_PGOFF ((SECTIONS_PGOFF < ZONES_PGOFF) ? \ SECTIONS_PGOFF : ZONES_PGOFF) #else #define ZONEID_SHIFT (NODES_SHIFT + ZONES_SHIFT) #define ZONEID_PGOFF ((NODES_PGOFF < ZONES_PGOFF) ? \ NODES_PGOFF : ZONES_PGOFF) #endif #define ZONEID_PGSHIFT (ZONEID_PGOFF * (ZONEID_SHIFT != 0)) #define ZONES_MASK ((1UL << ZONES_WIDTH) - 1) #define NODES_MASK ((1UL << NODES_WIDTH) - 1) #define SECTIONS_MASK ((1UL << SECTIONS_WIDTH) - 1) #define LAST_CPUPID_MASK ((1UL << LAST_CPUPID_SHIFT) - 1) #define KASAN_TAG_MASK ((1UL << KASAN_TAG_WIDTH) - 1) #define ZONEID_MASK ((1UL << ZONEID_SHIFT) - 1) static inline enum zone_type page_zonenum(const struct page *page) { ASSERT_EXCLUSIVE_BITS(page->flags, ZONES_MASK << ZONES_PGSHIFT); return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK; } static inline enum zone_type folio_zonenum(const struct folio *folio) { return page_zonenum(&folio->page); } #ifdef CONFIG_ZONE_DEVICE static inline bool is_zone_device_page(const struct page *page) { return page_zonenum(page) == ZONE_DEVICE; } static inline struct dev_pagemap *page_pgmap(const struct page *page) { VM_WARN_ON_ONCE_PAGE(!is_zone_device_page(page), page); return page_folio(page)->pgmap; } /* * Consecutive zone device pages should not be merged into the same sgl * or bvec segment with other types of pages or if they belong to different * pgmaps. Otherwise getting the pgmap of a given segment is not possible * without scanning the entire segment. This helper returns true either if * both pages are not zone device pages or both pages are zone device pages * with the same pgmap. */ static inline bool zone_device_pages_have_same_pgmap(const struct page *a, const struct page *b) { if (is_zone_device_page(a) != is_zone_device_page(b)) return false; if (!is_zone_device_page(a)) return true; return page_pgmap(a) == page_pgmap(b); } extern void memmap_init_zone_device(struct zone *, unsigned long, unsigned long, struct dev_pagemap *); #else static inline bool is_zone_device_page(const struct page *page) { return false; } static inline bool zone_device_pages_have_same_pgmap(const struct page *a, const struct page *b) { return true; } static inline struct dev_pagemap *page_pgmap(const struct page *page) { return NULL; } #endif static inline bool folio_is_zone_device(const struct folio *folio) { return is_zone_device_page(&folio->page); } static inline bool is_zone_movable_page(const struct page *page) { return page_zonenum(page) == ZONE_MOVABLE; } static inline bool folio_is_zone_movable(const struct folio *folio) { return folio_zonenum(folio) == ZONE_MOVABLE; } #endif /* * Return true if [start_pfn, start_pfn + nr_pages) range has a non-empty * intersection with the given zone */ static inline bool zone_intersects(struct zone *zone, unsigned long start_pfn, unsigned long nr_pages) { if (zone_is_empty(zone)) return false; if (start_pfn >= zone_end_pfn(zone) || start_pfn + nr_pages <= zone->zone_start_pfn) return false; return true; } /* * The "priority" of VM scanning is how much of the queues we will scan in one * go. A value of 12 for DEF_PRIORITY implies that we will scan 1/4096th of the * queues ("queue_length >> 12") during an aging round. */ #define DEF_PRIORITY 12 /* Maximum number of zones on a zonelist */ #define MAX_ZONES_PER_ZONELIST (MAX_NUMNODES * MAX_NR_ZONES) enum { ZONELIST_FALLBACK, /* zonelist with fallback */ #ifdef CONFIG_NUMA /* * The NUMA zonelists are doubled because we need zonelists that * restrict the allocations to a single node for __GFP_THISNODE. */ ZONELIST_NOFALLBACK, /* zonelist without fallback (__GFP_THISNODE) */ #endif MAX_ZONELISTS }; /* * This struct contains information about a zone in a zonelist. It is stored * here to avoid dereferences into large structures and lookups of tables */ struct zoneref { struct zone *zone; /* Pointer to actual zone */ int zone_idx; /* zone_idx(zoneref->zone) */ }; /* * One allocation request operates on a zonelist. A zonelist * is a list of zones, the first one is the 'goal' of the * allocation, the other zones are fallback zones, in decreasing * priority. * * To speed the reading of the zonelist, the zonerefs contain the zone index * of the entry being read. Helper functions to access information given * a struct zoneref are * * zonelist_zone() - Return the struct zone * for an entry in _zonerefs * zonelist_zone_idx() - Return the index of the zone for an entry * zonelist_node_idx() - Return the index of the node for an entry */ struct zonelist { struct zoneref _zonerefs[MAX_ZONES_PER_ZONELIST + 1]; }; /* * The array of struct pages for flatmem. * It must be declared for SPARSEMEM as well because there are configurations * that rely on that. */ extern struct page *mem_map; #ifdef CONFIG_TRANSPARENT_HUGEPAGE struct deferred_split { spinlock_t split_queue_lock; struct list_head split_queue; unsigned long split_queue_len; }; #endif #ifdef CONFIG_MEMORY_FAILURE /* * Per NUMA node memory failure handling statistics. */ struct memory_failure_stats { /* * Number of raw pages poisoned. * Cases not accounted: memory outside kernel control, offline page, * arch-specific memory_failure (SGX), hwpoison_filter() filtered * error events, and unpoison actions from hwpoison_unpoison. */ unsigned long total; /* * Recovery results of poisoned raw pages handled by memory_failure, * in sync with mf_result. * total = ignored + failed + delayed + recovered. * total * PAGE_SIZE * #nodes = /proc/meminfo/HardwareCorrupted. */ unsigned long ignored; unsigned long failed; unsigned long delayed; unsigned long recovered; }; #endif /* * On NUMA machines, each NUMA node would have a pg_data_t to describe * it's memory layout. On UMA machines there is a single pglist_data which * describes the whole memory. * * Memory statistics and page replacement data structures are maintained on a * per-zone basis. */ typedef struct pglist_data { /* * node_zones contains just the zones for THIS node. Not all of the * zones may be populated, but it is the full list. It is referenced by * this node's node_zonelists as well as other node's node_zonelists. */ struct zone node_zones[MAX_NR_ZONES]; /* * node_zonelists contains references to all zones in all nodes. * Generally the first zones will be references to this node's * node_zones. */ struct zonelist node_zonelists[MAX_ZONELISTS]; int nr_zones; /* number of populated zones in this node */ #ifdef CONFIG_FLATMEM /* means !SPARSEMEM */ struct page *node_mem_map; #ifdef CONFIG_PAGE_EXTENSION struct page_ext *node_page_ext; #endif #endif #if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_DEFERRED_STRUCT_PAGE_INIT) /* * Must be held any time you expect node_start_pfn, * node_present_pages, node_spanned_pages or nr_zones to stay constant. * Also synchronizes pgdat->first_deferred_pfn during deferred page * init. * * pgdat_resize_lock() and pgdat_resize_unlock() are provided to * manipulate node_size_lock without checking for CONFIG_MEMORY_HOTPLUG * or CONFIG_DEFERRED_STRUCT_PAGE_INIT. * * Nests above zone->lock and zone->span_seqlock */ spinlock_t node_size_lock; #endif unsigned long node_start_pfn; unsigned long node_present_pages; /* total number of physical pages */ unsigned long node_spanned_pages; /* total size of physical page range, including holes */ int node_id; wait_queue_head_t kswapd_wait; wait_queue_head_t pfmemalloc_wait; /* workqueues for throttling reclaim for different reasons. */ wait_queue_head_t reclaim_wait[NR_VMSCAN_THROTTLE]; atomic_t nr_writeback_throttled;/* nr of writeback-throttled tasks */ unsigned long nr_reclaim_start; /* nr pages written while throttled * when throttling started. */ #ifdef CONFIG_MEMORY_HOTPLUG struct mutex kswapd_lock; #endif struct task_struct *kswapd; /* Protected by kswapd_lock */ int kswapd_order; enum zone_type kswapd_highest_zoneidx; int kswapd_failures; /* Number of 'reclaimed == 0' runs */ #ifdef CONFIG_COMPACTION int kcompactd_max_order; enum zone_type kcompactd_highest_zoneidx; wait_queue_head_t kcompactd_wait; struct task_struct *kcompactd; bool proactive_compact_trigger; #endif /* * This is a per-node reserve of pages that are not available * to userspace allocations. */ unsigned long totalreserve_pages; #ifdef CONFIG_NUMA /* * node reclaim becomes active if more unmapped pages exist. */ unsigned long min_unmapped_pages; unsigned long min_slab_pages; #endif /* CONFIG_NUMA */ /* Write-intensive fields used by page reclaim */ CACHELINE_PADDING(_pad1_); #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT /* * If memory initialisation on large machines is deferred then this * is the first PFN that needs to be initialised. */ unsigned long first_deferred_pfn; #endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */ #ifdef CONFIG_TRANSPARENT_HUGEPAGE struct deferred_split deferred_split_queue; #endif #ifdef CONFIG_NUMA_BALANCING /* start time in ms of current promote rate limit period */ unsigned int nbp_rl_start; /* number of promote candidate pages at start time of current rate limit period */ unsigned long nbp_rl_nr_cand; /* promote threshold in ms */ unsigned int nbp_threshold; /* start time in ms of current promote threshold adjustment period */ unsigned int nbp_th_start; /* * number of promote candidate pages at start time of current promote * threshold adjustment period */ unsigned long nbp_th_nr_cand; #endif /* Fields commonly accessed by the page reclaim scanner */ /* * NOTE: THIS IS UNUSED IF MEMCG IS ENABLED. * * Use mem_cgroup_lruvec() to look up lruvecs. */ struct lruvec __lruvec; unsigned long flags; #ifdef CONFIG_LRU_GEN /* kswap mm walk data */ struct lru_gen_mm_walk mm_walk; /* lru_gen_folio list */ struct lru_gen_memcg memcg_lru; #endif CACHELINE_PADDING(_pad2_); /* Per-node vmstats */ struct per_cpu_nodestat __percpu *per_cpu_nodestats; atomic_long_t vm_stat[NR_VM_NODE_STAT_ITEMS]; #ifdef CONFIG_NUMA struct memory_tier __rcu *memtier; #endif #ifdef CONFIG_MEMORY_FAILURE struct memory_failure_stats mf_stats; #endif } pg_data_t; #define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages) #define node_spanned_pages(nid) (NODE_DATA(nid)->node_spanned_pages) #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) #define node_end_pfn(nid) pgdat_end_pfn(NODE_DATA(nid)) static inline unsigned long pgdat_end_pfn(pg_data_t *pgdat) { return pgdat->node_start_pfn + pgdat->node_spanned_pages; } #include <linux/memory_hotplug.h> void build_all_zonelists(pg_data_t *pgdat); void wakeup_kswapd(struct zone *zone, gfp_t gfp_mask, int order, enum zone_type highest_zoneidx); bool __zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark, int highest_zoneidx, unsigned int alloc_flags, long free_pages); bool zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark, int highest_zoneidx, unsigned int alloc_flags); /* * Memory initialization context, use to differentiate memory added by * the platform statically or via memory hotplug interface. */ enum meminit_context { MEMINIT_EARLY, MEMINIT_HOTPLUG, }; extern void init_currently_empty_zone(struct zone *zone, unsigned long start_pfn, unsigned long size); extern void lruvec_init(struct lruvec *lruvec); static inline struct pglist_data *lruvec_pgdat(struct lruvec *lruvec) { #ifdef CONFIG_MEMCG return lruvec->pgdat; #else return container_of(lruvec, struct pglist_data, __lruvec); #endif } #ifdef CONFIG_HAVE_MEMORYLESS_NODES int local_memory_node(int node_id); #else static inline int local_memory_node(int node_id) { return node_id; }; #endif /* * zone_idx() returns 0 for the ZONE_DMA zone, 1 for the ZONE_NORMAL zone, etc. */ #define zone_idx(zone) ((zone) - (zone)->zone_pgdat->node_zones) #ifdef CONFIG_ZONE_DEVICE static inline bool zone_is_zone_device(struct zone *zone) { return zone_idx(zone) == ZONE_DEVICE; } #else static inline bool zone_is_zone_device(struct zone *zone) { return false; } #endif /* * Returns true if a zone has pages managed by the buddy allocator. * All the reclaim decisions have to use this function rather than * populated_zone(). If the whole zone is reserved then we can easily * end up with populated_zone() && !managed_zone(). */ static inline bool managed_zone(struct zone *zone) { return zone_managed_pages(zone); } /* Returns true if a zone has memory */ static inline bool populated_zone(struct zone *zone) { return zone->present_pages; } #ifdef CONFIG_NUMA static inline int zone_to_nid(struct zone *zone) { return zone->node; } static inline void zone_set_nid(struct zone *zone, int nid) { zone->node = nid; } #else static inline int zone_to_nid(struct zone *zone) { return 0; } static inline void zone_set_nid(struct zone *zone, int nid) {} #endif extern int movable_zone; static inline int is_highmem_idx(enum zone_type idx) { #ifdef CONFIG_HIGHMEM return (idx == ZONE_HIGHMEM || (idx == ZONE_MOVABLE && movable_zone == ZONE_HIGHMEM)); #else return 0; #endif } /** * is_highmem - helper function to quickly check if a struct zone is a * highmem zone or not. This is an attempt to keep references * to ZONE_{DMA/NORMAL/HIGHMEM/etc} in general code to a minimum. * @zone: pointer to struct zone variable * Return: 1 for a highmem zone, 0 otherwise */ static inline int is_highmem(struct zone *zone) { return is_highmem_idx(zone_idx(zone)); } #ifdef CONFIG_ZONE_DMA bool has_managed_dma(void); #else static inline bool has_managed_dma(void) { return false; } #endif #ifndef CONFIG_NUMA extern struct pglist_data contig_page_data; static inline struct pglist_data *NODE_DATA(int nid) { return &contig_page_data; } #else /* CONFIG_NUMA */ #include <asm/mmzone.h> #endif /* !CONFIG_NUMA */ extern struct pglist_data *first_online_pgdat(void); extern struct pglist_data *next_online_pgdat(struct pglist_data *pgdat); extern struct zone *next_zone(struct zone *zone); /** * for_each_online_pgdat - helper macro to iterate over all online nodes * @pgdat: pointer to a pg_data_t variable */ #define for_each_online_pgdat(pgdat) \ for (pgdat = first_online_pgdat(); \ pgdat; \ pgdat = next_online_pgdat(pgdat)) /** * for_each_zone - helper macro to iterate over all memory zones * @zone: pointer to struct zone variable * * The user only needs to declare the zone variable, for_each_zone * fills it in. */ #define for_each_zone(zone) \ for (zone = (first_online_pgdat())->node_zones; \ zone; \ zone = next_zone(zone)) #define for_each_populated_zone(zone) \ for (zone = (first_online_pgdat())->node_zones; \ zone; \ zone = next_zone(zone)) \ if (!populated_zone(zone)) \ ; /* do nothing */ \ else static inline struct zone *zonelist_zone(struct zoneref *zoneref) { return zoneref->zone; } static inline int zonelist_zone_idx(struct zoneref *zoneref) { return zoneref->zone_idx; } static inline int zonelist_node_idx(struct zoneref *zoneref) { return zone_to_nid(zoneref->zone); } struct zoneref *__next_zones_zonelist(struct zoneref *z, enum zone_type highest_zoneidx, nodemask_t *nodes); /** * next_zones_zonelist - Returns the next zone at or below highest_zoneidx within the allowed nodemask using a cursor within a zonelist as a starting point * @z: The cursor used as a starting point for the search * @highest_zoneidx: The zone index of the highest zone to return * @nodes: An optional nodemask to filter the zonelist with * * This function returns the next zone at or below a given zone index that is * within the allowed nodemask using a cursor as the starting point for the * search. The zoneref returned is a cursor that represents the current zone * being examined. It should be advanced by one before calling * next_zones_zonelist again. * * Return: the next zone at or below highest_zoneidx within the allowed * nodemask using a cursor within a zonelist as a starting point */ static __always_inline struct zoneref *next_zones_zonelist(struct zoneref *z, enum zone_type highest_zoneidx, nodemask_t *nodes) { if (likely(!nodes && zonelist_zone_idx(z) <= highest_zoneidx)) return z; return __next_zones_zonelist(z, highest_zoneidx, nodes); } /** * first_zones_zonelist - Returns the first zone at or below highest_zoneidx within the allowed nodemask in a zonelist * @zonelist: The zonelist to search for a suitable zone * @highest_zoneidx: The zone index of the highest zone to return * @nodes: An optional nodemask to filter the zonelist with * * This function returns the first zone at or below a given zone index that is * within the allowed nodemask. The zoneref returned is a cursor that can be * used to iterate the zonelist with next_zones_zonelist by advancing it by * one before calling. * * When no eligible zone is found, zoneref->zone is NULL (zoneref itself is * never NULL). This may happen either genuinely, or due to concurrent nodemask * update due to cpuset modification. * * Return: Zoneref pointer for the first suitable zone found */ static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist, enum zone_type highest_zoneidx, nodemask_t *nodes) { return next_zones_zonelist(zonelist->_zonerefs, highest_zoneidx, nodes); } /** * for_each_zone_zonelist_nodemask - helper macro to iterate over valid zones in a zonelist at or below a given zone index and within a nodemask * @zone: The current zone in the iterator * @z: The current pointer within zonelist->_zonerefs being iterated * @zlist: The zonelist being iterated * @highidx: The zone index of the highest zone to return * @nodemask: Nodemask allowed by the allocator * * This iterator iterates though all zones at or below a given zone index and * within a given nodemask */ #define for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, nodemask) \ for (z = first_zones_zonelist(zlist, highidx, nodemask), zone = zonelist_zone(z); \ zone; \ z = next_zones_zonelist(++z, highidx, nodemask), \ zone = zonelist_zone(z)) #define for_next_zone_zonelist_nodemask(zone, z, highidx, nodemask) \ for (zone = zonelist_zone(z); \ zone; \ z = next_zones_zonelist(++z, highidx, nodemask), \ zone = zonelist_zone(z)) /** * for_each_zone_zonelist - helper macro to iterate over valid zones in a zonelist at or below a given zone index * @zone: The current zone in the iterator * @z: The current pointer within zonelist->zones being iterated * @zlist: The zonelist being iterated * @highidx: The zone index of the highest zone to return * * This iterator iterates though all zones at or below a given zone index. */ #define for_each_zone_zonelist(zone, z, zlist, highidx) \ for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, NULL) /* Whether the 'nodes' are all movable nodes */ static inline bool movable_only_nodes(nodemask_t *nodes) { struct zonelist *zonelist; struct zoneref *z; int nid; if (nodes_empty(*nodes)) return false; /* * We can chose arbitrary node from the nodemask to get a * zonelist as they are interlinked. We just need to find * at least one zone that can satisfy kernel allocations. */ nid = first_node(*nodes); zonelist = &NODE_DATA(nid)->node_zonelists[ZONELIST_FALLBACK]; z = first_zones_zonelist(zonelist, ZONE_NORMAL, nodes); return (!zonelist_zone(z)) ? true : false; } #ifdef CONFIG_SPARSEMEM #include <asm/sparsemem.h> #endif #ifdef CONFIG_FLATMEM #define pfn_to_nid(pfn) (0) #endif #ifdef CONFIG_SPARSEMEM /* * PA_SECTION_SHIFT physical address to/from section number * PFN_SECTION_SHIFT pfn to/from section number */ #define PA_SECTION_SHIFT (SECTION_SIZE_BITS) #define PFN_SECTION_SHIFT (SECTION_SIZE_BITS - PAGE_SHIFT) #define NR_MEM_SECTIONS (1UL << SECTIONS_SHIFT) #define PAGES_PER_SECTION (1UL << PFN_SECTION_SHIFT) #define PAGE_SECTION_MASK (~(PAGES_PER_SECTION-1)) #define SECTION_BLOCKFLAGS_BITS \ ((1UL << (PFN_SECTION_SHIFT - pageblock_order)) * NR_PAGEBLOCK_BITS) #if (MAX_PAGE_ORDER + PAGE_SHIFT) > SECTION_SIZE_BITS #error Allocator MAX_PAGE_ORDER exceeds SECTION_SIZE #endif static inline unsigned long pfn_to_section_nr(unsigned long pfn) { return pfn >> PFN_SECTION_SHIFT; } static inline unsigned long section_nr_to_pfn(unsigned long sec) { return sec << PFN_SECTION_SHIFT; } #define SECTION_ALIGN_UP(pfn) (((pfn) + PAGES_PER_SECTION - 1) & PAGE_SECTION_MASK) #define SECTION_ALIGN_DOWN(pfn) ((pfn) & PAGE_SECTION_MASK) #define SUBSECTION_SHIFT 21 #define SUBSECTION_SIZE (1UL << SUBSECTION_SHIFT) #define PFN_SUBSECTION_SHIFT (SUBSECTION_SHIFT - PAGE_SHIFT) #define PAGES_PER_SUBSECTION (1UL << PFN_SUBSECTION_SHIFT) #define PAGE_SUBSECTION_MASK (~(PAGES_PER_SUBSECTION-1)) #if SUBSECTION_SHIFT > SECTION_SIZE_BITS #error Subsection size exceeds section size #else #define SUBSECTIONS_PER_SECTION (1UL << (SECTION_SIZE_BITS - SUBSECTION_SHIFT)) #endif #define SUBSECTION_ALIGN_UP(pfn) ALIGN((pfn), PAGES_PER_SUBSECTION) #define SUBSECTION_ALIGN_DOWN(pfn) ((pfn) & PAGE_SUBSECTION_MASK) struct mem_section_usage { struct rcu_head rcu; #ifdef CONFIG_SPARSEMEM_VMEMMAP DECLARE_BITMAP(subsection_map, SUBSECTIONS_PER_SECTION); #endif /* See declaration of similar field in struct zone */ unsigned long pageblock_flags[0]; }; void subsection_map_init(unsigned long pfn, unsigned long nr_pages); struct page; struct page_ext; struct mem_section { /* * This is, logically, a pointer to an array of struct * pages. However, it is stored with some other magic. * (see sparse.c::sparse_init_one_section()) * * Additionally during early boot we encode node id of * the location of the section here to guide allocation. * (see sparse.c::memory_present()) * * Making it a UL at least makes someone do a cast * before using it wrong. */ unsigned long section_mem_map; struct mem_section_usage *usage; #ifdef CONFIG_PAGE_EXTENSION /* * If SPARSEMEM, pgdat doesn't have page_ext pointer. We use * section. (see page_ext.h about this.) */ struct page_ext *page_ext; unsigned long pad; #endif /* * WARNING: mem_section must be a power-of-2 in size for the * calculation and use of SECTION_ROOT_MASK to make sense. */ }; #ifdef CONFIG_SPARSEMEM_EXTREME #define SECTIONS_PER_ROOT (PAGE_SIZE / sizeof (struct mem_section)) #else #define SECTIONS_PER_ROOT 1 #endif #define SECTION_NR_TO_ROOT(sec) ((sec) / SECTIONS_PER_ROOT) #define NR_SECTION_ROOTS DIV_ROUND_UP(NR_MEM_SECTIONS, SECTIONS_PER_ROOT) #define SECTION_ROOT_MASK (SECTIONS_PER_ROOT - 1) #ifdef CONFIG_SPARSEMEM_EXTREME extern struct mem_section **mem_section; #else extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT]; #endif static inline unsigned long *section_to_usemap(struct mem_section *ms) { return ms->usage->pageblock_flags; } static inline struct mem_section *__nr_to_section(unsigned long nr) { unsigned long root = SECTION_NR_TO_ROOT(nr); if (unlikely(root >= NR_SECTION_ROOTS)) return NULL; #ifdef CONFIG_SPARSEMEM_EXTREME if (!mem_section || !mem_section[root]) return NULL; #endif return &mem_section[root][nr & SECTION_ROOT_MASK]; } extern size_t mem_section_usage_size(void); /* * We use the lower bits of the mem_map pointer to store * a little bit of information. The pointer is calculated * as mem_map - section_nr_to_pfn(pnum). The result is * aligned to the minimum alignment of the two values: * 1. All mem_map arrays are page-aligned. * 2. section_nr_to_pfn() always clears PFN_SECTION_SHIFT * lowest bits. PFN_SECTION_SHIFT is arch-specific * (equal SECTION_SIZE_BITS - PAGE_SHIFT), and the * worst combination is powerpc with 256k pages, * which results in PFN_SECTION_SHIFT equal 6. * To sum it up, at least 6 bits are available on all architectures. * However, we can exceed 6 bits on some other architectures except * powerpc (e.g. 15 bits are available on x86_64, 13 bits are available * with the worst case of 64K pages on arm64) if we make sure the * exceeded bit is not applicable to powerpc. */ enum { SECTION_MARKED_PRESENT_BIT, SECTION_HAS_MEM_MAP_BIT, SECTION_IS_ONLINE_BIT, SECTION_IS_EARLY_BIT, #ifdef CONFIG_ZONE_DEVICE SECTION_TAINT_ZONE_DEVICE_BIT, #endif #ifdef CONFIG_SPARSEMEM_VMEMMAP_PREINIT SECTION_IS_VMEMMAP_PREINIT_BIT, #endif SECTION_MAP_LAST_BIT, }; #define SECTION_MARKED_PRESENT BIT(SECTION_MARKED_PRESENT_BIT) #define SECTION_HAS_MEM_MAP BIT(SECTION_HAS_MEM_MAP_BIT) #define SECTION_IS_ONLINE BIT(SECTION_IS_ONLINE_BIT) #define SECTION_IS_EARLY BIT(SECTION_IS_EARLY_BIT) #ifdef CONFIG_ZONE_DEVICE #define SECTION_TAINT_ZONE_DEVICE BIT(SECTION_TAINT_ZONE_DEVICE_BIT) #endif #ifdef CONFIG_SPARSEMEM_VMEMMAP_PREINIT #define SECTION_IS_VMEMMAP_PREINIT BIT(SECTION_IS_VMEMMAP_PREINIT_BIT) #endif #define SECTION_MAP_MASK (~(BIT(SECTION_MAP_LAST_BIT) - 1)) #define SECTION_NID_SHIFT SECTION_MAP_LAST_BIT static inline struct page *__section_mem_map_addr(struct mem_section *section) { unsigned long map = section->section_mem_map; map &= SECTION_MAP_MASK; return (struct page *)map; } static inline int present_section(struct mem_section *section) { return (section && (section->section_mem_map & SECTION_MARKED_PRESENT)); } static inline int present_section_nr(unsigned long nr) { return present_section(__nr_to_section(nr)); } static inline int valid_section(struct mem_section *section) { return (section && (section->section_mem_map & SECTION_HAS_MEM_MAP)); } static inline int early_section(struct mem_section *section) { return (section && (section->section_mem_map & SECTION_IS_EARLY)); } static inline int valid_section_nr(unsigned long nr) { return valid_section(__nr_to_section(nr)); } static inline int online_section(struct mem_section *section) { return (section && (section->section_mem_map & SECTION_IS_ONLINE)); } #ifdef CONFIG_ZONE_DEVICE static inline int online_device_section(struct mem_section *section) { unsigned long flags = SECTION_IS_ONLINE | SECTION_TAINT_ZONE_DEVICE; return section && ((section->section_mem_map & flags) == flags); } #else static inline int online_device_section(struct mem_section *section) { return 0; } #endif #ifdef CONFIG_SPARSEMEM_VMEMMAP_PREINIT static inline int preinited_vmemmap_section(struct mem_section *section) { return (section && (section->section_mem_map & SECTION_IS_VMEMMAP_PREINIT)); } void sparse_vmemmap_init_nid_early(int nid); void sparse_vmemmap_init_nid_late(int nid); #else static inline int preinited_vmemmap_section(struct mem_section *section) { return 0; } static inline void sparse_vmemmap_init_nid_early(int nid) { } static inline void sparse_vmemmap_init_nid_late(int nid) { } #endif static inline int online_section_nr(unsigned long nr) { return online_section(__nr_to_section(nr)); } #ifdef CONFIG_MEMORY_HOTPLUG void online_mem_sections(unsigned long start_pfn, unsigned long end_pfn); void offline_mem_sections(unsigned long start_pfn, unsigned long end_pfn); #endif static inline struct mem_section *__pfn_to_section(unsigned long pfn) { return __nr_to_section(pfn_to_section_nr(pfn)); } extern unsigned long __highest_present_section_nr; static inline int subsection_map_index(unsigned long pfn) { return (pfn & ~(PAGE_SECTION_MASK)) / PAGES_PER_SUBSECTION; } #ifdef CONFIG_SPARSEMEM_VMEMMAP static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn) { int idx = subsection_map_index(pfn); struct mem_section_usage *usage = READ_ONCE(ms->usage); return usage ? test_bit(idx, usage->subsection_map) : 0; } #else static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn) { return 1; } #endif void sparse_init_early_section(int nid, struct page *map, unsigned long pnum, unsigned long flags); #ifndef CONFIG_HAVE_ARCH_PFN_VALID /** * pfn_valid - check if there is a valid memory map entry for a PFN * @pfn: the page frame number to check * * Check if there is a valid memory map entry aka struct page for the @pfn. * Note, that availability of the memory map entry does not imply that * there is actual usable memory at that @pfn. The struct page may * represent a hole or an unusable page frame. * * Return: 1 for PFNs that have memory map entries and 0 otherwise */ static inline int pfn_valid(unsigned long pfn) { struct mem_section *ms; int ret; /* * Ensure the upper PAGE_SHIFT bits are clear in the * pfn. Else it might lead to false positives when * some of the upper bits are set, but the lower bits * match a valid pfn. */ if (PHYS_PFN(PFN_PHYS(pfn)) != pfn) return 0; if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS) return 0; ms = __pfn_to_section(pfn); rcu_read_lock_sched(); if (!valid_section(ms)) { rcu_read_unlock_sched(); return 0; } /* * Traditionally early sections always returned pfn_valid() for * the entire section-sized span. */ ret = early_section(ms) || pfn_section_valid(ms, pfn); rcu_read_unlock_sched(); return ret; } #endif static inline int pfn_in_present_section(unsigned long pfn) { if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS) return 0; return present_section(__pfn_to_section(pfn)); } static inline unsigned long next_present_section_nr(unsigned long section_nr) { while (++section_nr <= __highest_present_section_nr) { if (present_section_nr(section_nr)) return section_nr; } return -1; } #define for_each_present_section_nr(start, section_nr) \ for (section_nr = next_present_section_nr(start - 1); \ section_nr != -1; \ section_nr = next_present_section_nr(section_nr)) /* * These are _only_ used during initialisation, therefore they * can use __initdata ... They could have names to indicate * this restriction. */ #ifdef CONFIG_NUMA #define pfn_to_nid(pfn) \ ({ \ unsigned long __pfn_to_nid_pfn = (pfn); \ page_to_nid(pfn_to_page(__pfn_to_nid_pfn)); \ }) #else #define pfn_to_nid(pfn) (0) #endif void sparse_init(void); #else #define sparse_init() do {} while (0) #define sparse_index_init(_sec, _nid) do {} while (0) #define sparse_vmemmap_init_nid_early(_nid, _use) do {} while (0) #define sparse_vmemmap_init_nid_late(_nid) do {} while (0) #define pfn_in_present_section pfn_valid #define subsection_map_init(_pfn, _nr_pages) do {} while (0) #endif /* CONFIG_SPARSEMEM */ #endif /* !__GENERATING_BOUNDS.H */ #endif /* !__ASSEMBLY__ */ #endif /* _LINUX_MMZONE_H */ |
| 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 | // SPDX-License-Identifier: GPL-2.0-or-later #ifndef _LINUX_REF_TRACKER_H #define _LINUX_REF_TRACKER_H #include <linux/refcount.h> #include <linux/types.h> #include <linux/spinlock.h> #include <linux/stackdepot.h> struct ref_tracker; struct ref_tracker_dir { #ifdef CONFIG_REF_TRACKER spinlock_t lock; unsigned int quarantine_avail; refcount_t untracked; refcount_t no_tracker; bool dead; struct list_head list; /* List of active trackers */ struct list_head quarantine; /* List of dead trackers */ char name[32]; #endif }; #ifdef CONFIG_REF_TRACKER static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir, unsigned int quarantine_count, const char *name) { INIT_LIST_HEAD(&dir->list); INIT_LIST_HEAD(&dir->quarantine); spin_lock_init(&dir->lock); dir->quarantine_avail = quarantine_count; dir->dead = false; refcount_set(&dir->untracked, 1); refcount_set(&dir->no_tracker, 1); strscpy(dir->name, name, sizeof(dir->name)); stack_depot_init(); } void ref_tracker_dir_exit(struct ref_tracker_dir *dir); void ref_tracker_dir_print_locked(struct ref_tracker_dir *dir, unsigned int display_limit); void ref_tracker_dir_print(struct ref_tracker_dir *dir, unsigned int display_limit); int ref_tracker_dir_snprint(struct ref_tracker_dir *dir, char *buf, size_t size); int ref_tracker_alloc(struct ref_tracker_dir *dir, struct ref_tracker **trackerp, gfp_t gfp); int ref_tracker_free(struct ref_tracker_dir *dir, struct ref_tracker **trackerp); #else /* CONFIG_REF_TRACKER */ static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir, unsigned int quarantine_count, const char *name) { } static inline void ref_tracker_dir_exit(struct ref_tracker_dir *dir) { } static inline void ref_tracker_dir_print_locked(struct ref_tracker_dir *dir, unsigned int display_limit) { } static inline void ref_tracker_dir_print(struct ref_tracker_dir *dir, unsigned int display_limit) { } static inline int ref_tracker_dir_snprint(struct ref_tracker_dir *dir, char *buf, size_t size) { return 0; } static inline int ref_tracker_alloc(struct ref_tracker_dir *dir, struct ref_tracker **trackerp, gfp_t gfp) { return 0; } static inline int ref_tracker_free(struct ref_tracker_dir *dir, struct ref_tracker **trackerp) { return 0; } #endif #endif /* _LINUX_REF_TRACKER_H */ |
| 21 21 21 21 21 5 21 21 20 21 21 21 21 21 5 16 21 21 21 21 21 21 21 21 21 21 21 21 20 20 20 | 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 | /* * Multiplexed I2C bus driver. * * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it> * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it> * Copyright (c) 2009-2010 NSN GmbH & Co KG <michael.lawnick.ext@nsn.com> * * Simplifies access to complex multiplexed I2C bus topologies, by presenting * each multiplexed bus segment as an additional I2C adapter. * Supports multi-level mux'ing (mux behind a mux). * * Based on: * i2c-virt.c from Kumar Gala <galak@kernel.crashing.org> * i2c-virtual.c from Ken Harrenstien, Copyright (c) 2004 Google, Inc. * i2c-virtual.c from Brian Kuschak <bkuschak@yahoo.com> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/acpi.h> #include <linux/i2c.h> #include <linux/i2c-mux.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/slab.h> #include <linux/sysfs.h> /* multiplexer per channel data */ struct i2c_mux_priv { struct i2c_adapter adap; struct i2c_algorithm algo; struct i2c_mux_core *muxc; u32 chan_id; }; static int __i2c_mux_master_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) { struct i2c_mux_priv *priv = adap->algo_data; struct i2c_mux_core *muxc = priv->muxc; struct i2c_adapter *parent = muxc->parent; int ret; /* Switch to the right mux port and perform the transfer. */ ret = muxc->select(muxc, priv->chan_id); if (ret >= 0) ret = __i2c_transfer(parent, msgs, num); if (muxc->deselect) muxc->deselect(muxc, priv->chan_id); return ret; } static int i2c_mux_master_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) { struct i2c_mux_priv *priv = adap->algo_data; struct i2c_mux_core *muxc = priv->muxc; struct i2c_adapter *parent = muxc->parent; int ret; /* Switch to the right mux port and perform the transfer. */ ret = muxc->select(muxc, priv->chan_id); if (ret >= 0) ret = i2c_transfer(parent, msgs, num); if (muxc->deselect) muxc->deselect(muxc, priv->chan_id); return ret; } static int __i2c_mux_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data *data) { struct i2c_mux_priv *priv = adap->algo_data; struct i2c_mux_core *muxc = priv->muxc; struct i2c_adapter *parent = muxc->parent; int ret; /* Select the right mux port and perform the transfer. */ ret = muxc->select(muxc, priv->chan_id); if (ret >= 0) ret = __i2c_smbus_xfer(parent, addr, flags, read_write, command, size, data); if (muxc->deselect) muxc->deselect(muxc, priv->chan_id); return ret; } static int i2c_mux_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data *data) { struct i2c_mux_priv *priv = adap->algo_data; struct i2c_mux_core *muxc = priv->muxc; struct i2c_adapter *parent = muxc->parent; int ret; /* Select the right mux port and perform the transfer. */ ret = muxc->select(muxc, priv->chan_id); if (ret >= 0) ret = i2c_smbus_xfer(parent, addr, flags, read_write, command, size, data); if (muxc->deselect) muxc->deselect(muxc, priv->chan_id); return ret; } /* Return the parent's functionality */ static u32 i2c_mux_functionality(struct i2c_adapter *adap) { struct i2c_mux_priv *priv = adap->algo_data; struct i2c_adapter *parent = priv->muxc->parent; return parent->algo->functionality(parent); } static void i2c_mux_lock_bus(struct i2c_adapter *adapter, unsigned int flags) { struct i2c_mux_priv *priv = adapter->algo_data; struct i2c_adapter *parent = priv->muxc->parent; rt_mutex_lock_nested(&parent->mux_lock, i2c_adapter_depth(adapter)); if (!(flags & I2C_LOCK_ROOT_ADAPTER)) return; i2c_lock_bus(parent, flags); } static int i2c_mux_trylock_bus(struct i2c_adapter *adapter, unsigned int flags) { struct i2c_mux_priv *priv = adapter->algo_data; struct i2c_adapter *parent = priv->muxc->parent; if (!rt_mutex_trylock(&parent->mux_lock)) return 0; /* mux_lock not locked, failure */ if (!(flags & I2C_LOCK_ROOT_ADAPTER)) return 1; /* we only want mux_lock, success */ if (i2c_trylock_bus(parent, flags)) return 1; /* parent locked too, success */ rt_mutex_unlock(&parent->mux_lock); return 0; /* parent not locked, failure */ } static void i2c_mux_unlock_bus(struct i2c_adapter *adapter, unsigned int flags) { struct i2c_mux_priv *priv = adapter->algo_data; struct i2c_adapter *parent = priv->muxc->parent; if (flags & I2C_LOCK_ROOT_ADAPTER) i2c_unlock_bus(parent, flags); rt_mutex_unlock(&parent->mux_lock); } static void i2c_parent_lock_bus(struct i2c_adapter *adapter, unsigned int flags) { struct i2c_mux_priv *priv = adapter->algo_data; struct i2c_adapter *parent = priv->muxc->parent; rt_mutex_lock_nested(&parent->mux_lock, i2c_adapter_depth(adapter)); i2c_lock_bus(parent, flags); } static int i2c_parent_trylock_bus(struct i2c_adapter *adapter, unsigned int flags) { struct i2c_mux_priv *priv = adapter->algo_data; struct i2c_adapter *parent = priv->muxc->parent; if (!rt_mutex_trylock(&parent->mux_lock)) return 0; /* mux_lock not locked, failure */ if (i2c_trylock_bus(parent, flags)) return 1; /* parent locked too, success */ rt_mutex_unlock(&parent->mux_lock); return 0; /* parent not locked, failure */ } static void i2c_parent_unlock_bus(struct i2c_adapter *adapter, unsigned int flags) { struct i2c_mux_priv *priv = adapter->algo_data; struct i2c_adapter *parent = priv->muxc->parent; i2c_unlock_bus(parent, flags); rt_mutex_unlock(&parent->mux_lock); } struct i2c_adapter *i2c_root_adapter(struct device *dev) { struct device *i2c; struct i2c_adapter *i2c_root; /* * Walk up the device tree to find an i2c adapter, indicating * that this is an i2c client device. Check all ancestors to * handle mfd devices etc. */ for (i2c = dev; i2c; i2c = i2c->parent) { if (i2c->type == &i2c_adapter_type) break; } if (!i2c) return NULL; /* Continue up the tree to find the root i2c adapter */ i2c_root = to_i2c_adapter(i2c); while (i2c_parent_is_i2c_adapter(i2c_root)) i2c_root = i2c_parent_is_i2c_adapter(i2c_root); return i2c_root; } EXPORT_SYMBOL_GPL(i2c_root_adapter); struct i2c_mux_core *i2c_mux_alloc(struct i2c_adapter *parent, struct device *dev, int max_adapters, int sizeof_priv, u32 flags, int (*select)(struct i2c_mux_core *, u32), int (*deselect)(struct i2c_mux_core *, u32)) { struct i2c_mux_core *muxc; size_t mux_size; mux_size = struct_size(muxc, adapter, max_adapters); muxc = devm_kzalloc(dev, size_add(mux_size, sizeof_priv), GFP_KERNEL); if (!muxc) return NULL; if (sizeof_priv) muxc->priv = &muxc->adapter[max_adapters]; muxc->parent = parent; muxc->dev = dev; if (flags & I2C_MUX_LOCKED) muxc->mux_locked = true; if (flags & I2C_MUX_ARBITRATOR) muxc->arbitrator = true; if (flags & I2C_MUX_GATE) muxc->gate = true; muxc->select = select; muxc->deselect = deselect; muxc->max_adapters = max_adapters; return muxc; } EXPORT_SYMBOL_GPL(i2c_mux_alloc); static const struct i2c_lock_operations i2c_mux_lock_ops = { .lock_bus = i2c_mux_lock_bus, .trylock_bus = i2c_mux_trylock_bus, .unlock_bus = i2c_mux_unlock_bus, }; static const struct i2c_lock_operations i2c_parent_lock_ops = { .lock_bus = i2c_parent_lock_bus, .trylock_bus = i2c_parent_trylock_bus, .unlock_bus = i2c_parent_unlock_bus, }; int i2c_mux_add_adapter(struct i2c_mux_core *muxc, u32 force_nr, u32 chan_id) { struct i2c_adapter *parent = muxc->parent; struct i2c_mux_priv *priv; char symlink_name[20]; int ret; if (muxc->num_adapters >= muxc->max_adapters) { dev_err(muxc->dev, "No room for more i2c-mux adapters\n"); return -EINVAL; } priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; /* Set up private adapter data */ priv->muxc = muxc; priv->chan_id = chan_id; /* Need to do algo dynamically because we don't know ahead * of time what sort of physical adapter we'll be dealing with. */ if (parent->algo->master_xfer) { if (muxc->mux_locked) priv->algo.master_xfer = i2c_mux_master_xfer; else priv->algo.master_xfer = __i2c_mux_master_xfer; } if (parent->algo->master_xfer_atomic) priv->algo.master_xfer_atomic = priv->algo.master_xfer; if (parent->algo->smbus_xfer) { if (muxc->mux_locked) priv->algo.smbus_xfer = i2c_mux_smbus_xfer; else priv->algo.smbus_xfer = __i2c_mux_smbus_xfer; } if (parent->algo->smbus_xfer_atomic) priv->algo.smbus_xfer_atomic = priv->algo.smbus_xfer; priv->algo.functionality = i2c_mux_functionality; /* Now fill out new adapter structure */ snprintf(priv->adap.name, sizeof(priv->adap.name), "i2c-%d-mux (chan_id %d)", i2c_adapter_id(parent), chan_id); priv->adap.owner = THIS_MODULE; priv->adap.algo = &priv->algo; priv->adap.algo_data = priv; priv->adap.dev.parent = &parent->dev; priv->adap.retries = parent->retries; priv->adap.timeout = parent->timeout; priv->adap.quirks = parent->quirks; if (muxc->mux_locked) priv->adap.lock_ops = &i2c_mux_lock_ops; else priv->adap.lock_ops = &i2c_parent_lock_ops; /* * Try to populate the mux adapter's of_node, expands to * nothing if !CONFIG_OF. */ if (muxc->dev->of_node) { struct device_node *dev_node = muxc->dev->of_node; struct device_node *mux_node, *child = NULL; u32 reg; if (muxc->arbitrator) mux_node = of_get_child_by_name(dev_node, "i2c-arb"); else if (muxc->gate) mux_node = of_get_child_by_name(dev_node, "i2c-gate"); else mux_node = of_get_child_by_name(dev_node, "i2c-mux"); if (mux_node) { /* A "reg" property indicates an old-style DT entry */ if (!of_property_read_u32(mux_node, "reg", ®)) { of_node_put(mux_node); mux_node = NULL; } } if (!mux_node) mux_node = of_node_get(dev_node); else if (muxc->arbitrator || muxc->gate) child = of_node_get(mux_node); if (!child) { for_each_child_of_node(mux_node, child) { ret = of_property_read_u32(child, "reg", ®); if (ret) continue; if (chan_id == reg) break; } } priv->adap.dev.of_node = child; of_node_put(mux_node); } /* * Associate the mux channel with an ACPI node. */ if (has_acpi_companion(muxc->dev)) acpi_preset_companion(&priv->adap.dev, ACPI_COMPANION(muxc->dev), chan_id); if (force_nr) { priv->adap.nr = force_nr; ret = i2c_add_numbered_adapter(&priv->adap); if (ret < 0) { dev_err(&parent->dev, "failed to add mux-adapter %u as bus %u (error=%d)\n", chan_id, force_nr, ret); goto err_free_priv; } } else { ret = i2c_add_adapter(&priv->adap); if (ret < 0) { dev_err(&parent->dev, "failed to add mux-adapter %u (error=%d)\n", chan_id, ret); goto err_free_priv; } } WARN(sysfs_create_link(&priv->adap.dev.kobj, &muxc->dev->kobj, "mux_device"), "can't create symlink to mux device\n"); snprintf(symlink_name, sizeof(symlink_name), "channel-%u", chan_id); WARN(sysfs_create_link(&muxc->dev->kobj, &priv->adap.dev.kobj, symlink_name), "can't create symlink to channel %u\n", chan_id); dev_info(&parent->dev, "Added multiplexed i2c bus %d\n", i2c_adapter_id(&priv->adap)); muxc->adapter[muxc->num_adapters++] = &priv->adap; return 0; err_free_priv: kfree(priv); return ret; } EXPORT_SYMBOL_GPL(i2c_mux_add_adapter); void i2c_mux_del_adapters(struct i2c_mux_core *muxc) { char symlink_name[20]; while (muxc->num_adapters) { struct i2c_adapter *adap = muxc->adapter[--muxc->num_adapters]; struct i2c_mux_priv *priv = adap->algo_data; struct device_node *np = adap->dev.of_node; muxc->adapter[muxc->num_adapters] = NULL; snprintf(symlink_name, sizeof(symlink_name), "channel-%u", priv->chan_id); sysfs_remove_link(&muxc->dev->kobj, symlink_name); sysfs_remove_link(&priv->adap.dev.kobj, "mux_device"); i2c_del_adapter(adap); of_node_put(np); kfree(priv); } } EXPORT_SYMBOL_GPL(i2c_mux_del_adapters); MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>"); MODULE_DESCRIPTION("I2C driver for multiplexed I2C busses"); MODULE_LICENSE("GPL v2"); |
| 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 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_PGALLOC_H #define _ASM_X86_PGALLOC_H #include <linux/threads.h> #include <linux/mm.h> /* for struct page */ #include <linux/pagemap.h> #include <asm/cpufeature.h> #define __HAVE_ARCH_PTE_ALLOC_ONE #define __HAVE_ARCH_PGD_FREE #include <asm-generic/pgalloc.h> static inline int __paravirt_pgd_alloc(struct mm_struct *mm) { return 0; } #ifdef CONFIG_PARAVIRT_XXL #include <asm/paravirt.h> #else #define paravirt_pgd_alloc(mm) __paravirt_pgd_alloc(mm) static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd) {} static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn) {} static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn) {} static inline void paravirt_alloc_pmd_clone(unsigned long pfn, unsigned long clonepfn, unsigned long start, unsigned long count) {} static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn) {} static inline void paravirt_alloc_p4d(struct mm_struct *mm, unsigned long pfn) {} static inline void paravirt_release_pte(unsigned long pfn) {} static inline void paravirt_release_pmd(unsigned long pfn) {} static inline void paravirt_release_pud(unsigned long pfn) {} static inline void paravirt_release_p4d(unsigned long pfn) {} #endif /* * In case of Page Table Isolation active, we acquire two PGDs instead of one. * Being order-1, it is both 8k in size and 8k-aligned. That lets us just * flip bit 12 in a pointer to swap between the two 4k halves. */ static inline unsigned int pgd_allocation_order(void) { if (cpu_feature_enabled(X86_FEATURE_PTI)) return 1; return 0; } /* * Allocate and free page tables. */ extern pgd_t *pgd_alloc(struct mm_struct *); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); extern pgtable_t pte_alloc_one(struct mm_struct *); extern void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte); static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte, unsigned long address) { ___pte_free_tlb(tlb, pte); } static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)); } static inline void pmd_populate_kernel_safe(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); set_pmd_safe(pmd, __pmd(__pa(pte) | _PAGE_TABLE)); } static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) { unsigned long pfn = page_to_pfn(pte); paravirt_alloc_pte(mm, pfn); set_pmd(pmd, __pmd(((pteval_t)pfn << PAGE_SHIFT) | _PAGE_TABLE)); } #if CONFIG_PGTABLE_LEVELS > 2 extern void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd); static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, unsigned long address) { ___pmd_free_tlb(tlb, pmd); } #ifdef CONFIG_X86_PAE extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd); #else /* !CONFIG_X86_PAE */ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd))); } static inline void pud_populate_safe(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); set_pud_safe(pud, __pud(_PAGE_TABLE | __pa(pmd))); } #endif /* CONFIG_X86_PAE */ #if CONFIG_PGTABLE_LEVELS > 3 static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud) { paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT); set_p4d(p4d, __p4d(_PAGE_TABLE | __pa(pud))); } static inline void p4d_populate_safe(struct mm_struct *mm, p4d_t *p4d, pud_t *pud) { paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT); set_p4d_safe(p4d, __p4d(_PAGE_TABLE | __pa(pud))); } extern void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud); static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, unsigned long address) { ___pud_free_tlb(tlb, pud); } #if CONFIG_PGTABLE_LEVELS > 4 static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, p4d_t *p4d) { if (!pgtable_l5_enabled()) return; paravirt_alloc_p4d(mm, __pa(p4d) >> PAGE_SHIFT); set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(p4d))); } static inline void pgd_populate_safe(struct mm_struct *mm, pgd_t *pgd, p4d_t *p4d) { if (!pgtable_l5_enabled()) return; paravirt_alloc_p4d(mm, __pa(p4d) >> PAGE_SHIFT); set_pgd_safe(pgd, __pgd(_PAGE_TABLE | __pa(p4d))); } extern void ___p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d); static inline void __p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d, unsigned long address) { if (pgtable_l5_enabled()) ___p4d_free_tlb(tlb, p4d); } #endif /* CONFIG_PGTABLE_LEVELS > 4 */ #endif /* CONFIG_PGTABLE_LEVELS > 3 */ #endif /* CONFIG_PGTABLE_LEVELS > 2 */ #endif /* _ASM_X86_PGALLOC_H */ |
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1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 | // SPDX-License-Identifier: GPL-2.0-or-later /* */ #include <linux/gfp.h> #include <linux/init.h> #include <linux/ratelimit.h> #include <linux/usb.h> #include <linux/usb/audio.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include "usbaudio.h" #include "helper.h" #include "card.h" #include "endpoint.h" #include "pcm.h" #include "clock.h" #include "quirks.h" enum { EP_STATE_STOPPED, EP_STATE_RUNNING, EP_STATE_STOPPING, }; /* interface refcounting */ struct snd_usb_iface_ref { unsigned char iface; bool need_setup; int opened; int altset; struct list_head list; }; /* clock refcounting */ struct snd_usb_clock_ref { unsigned char clock; atomic_t locked; int opened; int rate; bool need_setup; struct list_head list; }; /* * snd_usb_endpoint is a model that abstracts everything related to an * USB endpoint and its streaming. * * There are functions to activate and deactivate the streaming URBs and * optional callbacks to let the pcm logic handle the actual content of the * packets for playback and record. Thus, the bus streaming and the audio * handlers are fully decoupled. * * There are two different types of endpoints in audio applications. * * SND_USB_ENDPOINT_TYPE_DATA handles full audio data payload for both * inbound and outbound traffic. * * SND_USB_ENDPOINT_TYPE_SYNC endpoints are for inbound traffic only and * expect the payload to carry Q10.14 / Q16.16 formatted sync information * (3 or 4 bytes). * * Each endpoint has to be configured prior to being used by calling * snd_usb_endpoint_set_params(). * * The model incorporates a reference counting, so that multiple users * can call snd_usb_endpoint_start() and snd_usb_endpoint_stop(), and * only the first user will effectively start the URBs, and only the last * one to stop it will tear the URBs down again. */ /* * convert a sampling rate into our full speed format (fs/1000 in Q16.16) * this will overflow at approx 524 kHz */ static inline unsigned get_usb_full_speed_rate(unsigned int rate) { return ((rate << 13) + 62) / 125; } /* * convert a sampling rate into USB high speed format (fs/8000 in Q16.16) * this will overflow at approx 4 MHz */ static inline unsigned get_usb_high_speed_rate(unsigned int rate) { return ((rate << 10) + 62) / 125; } /* * release a urb data */ static void release_urb_ctx(struct snd_urb_ctx *u) { if (u->urb && u->buffer_size) usb_free_coherent(u->ep->chip->dev, u->buffer_size, u->urb->transfer_buffer, u->urb->transfer_dma); usb_free_urb(u->urb); u->urb = NULL; u->buffer_size = 0; } static const char *usb_error_string(int err) { switch (err) { case -ENODEV: return "no device"; case -ENOENT: return "endpoint not enabled"; case -EPIPE: return "endpoint stalled"; case -ENOSPC: return "not enough bandwidth"; case -ESHUTDOWN: return "device disabled"; case -EHOSTUNREACH: return "device suspended"; case -EINVAL: case -EAGAIN: case -EFBIG: case -EMSGSIZE: return "internal error"; default: return "unknown error"; } } static inline bool ep_state_running(struct snd_usb_endpoint *ep) { return atomic_read(&ep->state) == EP_STATE_RUNNING; } static inline bool ep_state_update(struct snd_usb_endpoint *ep, int old, int new) { return atomic_try_cmpxchg(&ep->state, &old, new); } /** * snd_usb_endpoint_implicit_feedback_sink: Report endpoint usage type * * @ep: The snd_usb_endpoint * * Determine whether an endpoint is driven by an implicit feedback * data endpoint source. */ int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep) { return ep->implicit_fb_sync && usb_pipeout(ep->pipe); } /* * Return the number of samples to be sent in the next packet * for streaming based on information derived from sync endpoints * * This won't be used for implicit feedback which takes the packet size * returned from the sync source */ static int slave_next_packet_size(struct snd_usb_endpoint *ep, unsigned int avail) { unsigned long flags; unsigned int phase; int ret; if (ep->fill_max) return ep->maxframesize; spin_lock_irqsave(&ep->lock, flags); phase = (ep->phase & 0xffff) + (ep->freqm << ep->datainterval); ret = min(phase >> 16, ep->maxframesize); if (avail && ret >= avail) ret = -EAGAIN; else ep->phase = phase; spin_unlock_irqrestore(&ep->lock, flags); return ret; } /* * Return the number of samples to be sent in the next packet * for adaptive and synchronous endpoints */ static int next_packet_size(struct snd_usb_endpoint *ep, unsigned int avail) { unsigned int sample_accum; int ret; if (ep->fill_max) return ep->maxframesize; sample_accum = ep->sample_accum + ep->sample_rem; if (sample_accum >= ep->pps) { sample_accum -= ep->pps; ret = ep->packsize[1]; } else { ret = ep->packsize[0]; } if (avail && ret >= avail) ret = -EAGAIN; else ep->sample_accum = sample_accum; return ret; } /* * snd_usb_endpoint_next_packet_size: Return the number of samples to be sent * in the next packet * * If the size is equal or exceeds @avail, don't proceed but return -EAGAIN * Exception: @avail = 0 for skipping the check. */ int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep, struct snd_urb_ctx *ctx, int idx, unsigned int avail) { unsigned int packet; packet = ctx->packet_size[idx]; if (packet) { if (avail && packet >= avail) return -EAGAIN; return packet; } if (ep->sync_source) return slave_next_packet_size(ep, avail); else return next_packet_size(ep, avail); } static void call_retire_callback(struct snd_usb_endpoint *ep, struct urb *urb) { struct snd_usb_substream *data_subs; data_subs = READ_ONCE(ep->data_subs); if (data_subs && ep->retire_data_urb) ep->retire_data_urb(data_subs, urb); } static void retire_outbound_urb(struct snd_usb_endpoint *ep, struct snd_urb_ctx *urb_ctx) { call_retire_callback(ep, urb_ctx->urb); } static void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, struct snd_usb_endpoint *sender, const struct urb *urb); static void retire_inbound_urb(struct snd_usb_endpoint *ep, struct snd_urb_ctx *urb_ctx) { struct urb *urb = urb_ctx->urb; struct snd_usb_endpoint *sync_sink; if (unlikely(ep->skip_packets > 0)) { ep->skip_packets--; return; } sync_sink = READ_ONCE(ep->sync_sink); if (sync_sink) snd_usb_handle_sync_urb(sync_sink, ep, urb); call_retire_callback(ep, urb); } static inline bool has_tx_length_quirk(struct snd_usb_audio *chip) { return chip->quirk_flags & QUIRK_FLAG_TX_LENGTH; } static void prepare_silent_urb(struct snd_usb_endpoint *ep, struct snd_urb_ctx *ctx) { struct urb *urb = ctx->urb; unsigned int offs = 0; unsigned int extra = 0; __le32 packet_length; int i; /* For tx_length_quirk, put packet length at start of packet */ if (has_tx_length_quirk(ep->chip)) extra = sizeof(packet_length); for (i = 0; i < ctx->packets; ++i) { unsigned int offset; unsigned int length; int counts; counts = snd_usb_endpoint_next_packet_size(ep, ctx, i, 0); length = counts * ep->stride; /* number of silent bytes */ offset = offs * ep->stride + extra * i; urb->iso_frame_desc[i].offset = offset; urb->iso_frame_desc[i].length = length + extra; if (extra) { packet_length = cpu_to_le32(length); memcpy(urb->transfer_buffer + offset, &packet_length, sizeof(packet_length)); } memset(urb->transfer_buffer + offset + extra, ep->silence_value, length); offs += counts; } urb->number_of_packets = ctx->packets; urb->transfer_buffer_length = offs * ep->stride + ctx->packets * extra; ctx->queued = 0; } /* * Prepare a PLAYBACK urb for submission to the bus. */ static int prepare_outbound_urb(struct snd_usb_endpoint *ep, struct snd_urb_ctx *ctx, bool in_stream_lock) { struct urb *urb = ctx->urb; unsigned char *cp = urb->transfer_buffer; struct snd_usb_substream *data_subs; urb->dev = ep->chip->dev; /* we need to set this at each time */ switch (ep->type) { case SND_USB_ENDPOINT_TYPE_DATA: data_subs = READ_ONCE(ep->data_subs); if (data_subs && ep->prepare_data_urb) return ep->prepare_data_urb(data_subs, urb, in_stream_lock); /* no data provider, so send silence */ prepare_silent_urb(ep, ctx); break; case SND_USB_ENDPOINT_TYPE_SYNC: if (snd_usb_get_speed(ep->chip->dev) >= USB_SPEED_HIGH) { /* * fill the length and offset of each urb descriptor. * the fixed 12.13 frequency is passed as 16.16 through the pipe. */ urb->iso_frame_desc[0].length = 4; urb->iso_frame_desc[0].offset = 0; cp[0] = ep->freqn; cp[1] = ep->freqn >> 8; cp[2] = ep->freqn >> 16; cp[3] = ep->freqn >> 24; } else { /* * fill the length and offset of each urb descriptor. * the fixed 10.14 frequency is passed through the pipe. */ urb->iso_frame_desc[0].length = 3; urb->iso_frame_desc[0].offset = 0; cp[0] = ep->freqn >> 2; cp[1] = ep->freqn >> 10; cp[2] = ep->freqn >> 18; } break; } return 0; } /* * Prepare a CAPTURE or SYNC urb for submission to the bus. */ static int prepare_inbound_urb(struct snd_usb_endpoint *ep, struct snd_urb_ctx *urb_ctx) { int i, offs; struct urb *urb = urb_ctx->urb; urb->dev = ep->chip->dev; /* we need to set this at each time */ switch (ep->type) { case SND_USB_ENDPOINT_TYPE_DATA: offs = 0; for (i = 0; i < urb_ctx->packets; i++) { urb->iso_frame_desc[i].offset = offs; urb->iso_frame_desc[i].length = ep->curpacksize; offs += ep->curpacksize; } urb->transfer_buffer_length = offs; urb->number_of_packets = urb_ctx->packets; break; case SND_USB_ENDPOINT_TYPE_SYNC: urb->iso_frame_desc[0].length = min(4u, ep->syncmaxsize); urb->iso_frame_desc[0].offset = 0; break; } return 0; } /* notify an error as XRUN to the assigned PCM data substream */ static void notify_xrun(struct snd_usb_endpoint *ep) { struct snd_usb_substream *data_subs; struct snd_pcm_substream *psubs; data_subs = READ_ONCE(ep->data_subs); if (!data_subs) return; psubs = data_subs->pcm_substream; if (psubs && psubs->runtime && psubs->runtime->state == SNDRV_PCM_STATE_RUNNING) snd_pcm_stop_xrun(psubs); } static struct snd_usb_packet_info * next_packet_fifo_enqueue(struct snd_usb_endpoint *ep) { struct snd_usb_packet_info *p; p = ep->next_packet + (ep->next_packet_head + ep->next_packet_queued) % ARRAY_SIZE(ep->next_packet); ep->next_packet_queued++; return p; } static struct snd_usb_packet_info * next_packet_fifo_dequeue(struct snd_usb_endpoint *ep) { struct snd_usb_packet_info *p; p = ep->next_packet + ep->next_packet_head; ep->next_packet_head++; ep->next_packet_head %= ARRAY_SIZE(ep->next_packet); ep->next_packet_queued--; return p; } static void push_back_to_ready_list(struct snd_usb_endpoint *ep, struct snd_urb_ctx *ctx) { unsigned long flags; spin_lock_irqsave(&ep->lock, flags); list_add_tail(&ctx->ready_list, &ep->ready_playback_urbs); spin_unlock_irqrestore(&ep->lock, flags); } /* * Send output urbs that have been prepared previously. URBs are dequeued * from ep->ready_playback_urbs and in case there aren't any available * or there are no packets that have been prepared, this function does * nothing. * * The reason why the functionality of sending and preparing URBs is separated * is that host controllers don't guarantee the order in which they return * inbound and outbound packets to their submitters. * * This function is used both for implicit feedback endpoints and in low- * latency playback mode. */ int snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep, bool in_stream_lock) { bool implicit_fb = snd_usb_endpoint_implicit_feedback_sink(ep); while (ep_state_running(ep)) { unsigned long flags; struct snd_usb_packet_info *packet; struct snd_urb_ctx *ctx = NULL; int err, i; spin_lock_irqsave(&ep->lock, flags); if ((!implicit_fb || ep->next_packet_queued > 0) && !list_empty(&ep->ready_playback_urbs)) { /* take URB out of FIFO */ ctx = list_first_entry(&ep->ready_playback_urbs, struct snd_urb_ctx, ready_list); list_del_init(&ctx->ready_list); if (implicit_fb) packet = next_packet_fifo_dequeue(ep); } spin_unlock_irqrestore(&ep->lock, flags); if (ctx == NULL) break; /* copy over the length information */ if (implicit_fb) { for (i = 0; i < packet->packets; i++) ctx->packet_size[i] = packet->packet_size[i]; } /* call the data handler to fill in playback data */ err = prepare_outbound_urb(ep, ctx, in_stream_lock); /* can be stopped during prepare callback */ if (unlikely(!ep_state_running(ep))) break; if (err < 0) { /* push back to ready list again for -EAGAIN */ if (err == -EAGAIN) { push_back_to_ready_list(ep, ctx); break; } if (!in_stream_lock) notify_xrun(ep); return -EPIPE; } if (!atomic_read(&ep->chip->shutdown)) err = usb_submit_urb(ctx->urb, GFP_ATOMIC); else err = -ENODEV; if (err < 0) { if (!atomic_read(&ep->chip->shutdown)) { usb_audio_err(ep->chip, "Unable to submit urb #%d: %d at %s\n", ctx->index, err, __func__); if (!in_stream_lock) notify_xrun(ep); } return -EPIPE; } set_bit(ctx->index, &ep->active_mask); atomic_inc(&ep->submitted_urbs); } return 0; } /* * complete callback for urbs */ static void snd_complete_urb(struct urb *urb) { struct snd_urb_ctx *ctx = urb->context; struct snd_usb_endpoint *ep = ctx->ep; int err; if (unlikely(urb->status == -ENOENT || /* unlinked */ urb->status == -ENODEV || /* device removed */ urb->status == -ECONNRESET || /* unlinked */ urb->status == -ESHUTDOWN)) /* device disabled */ goto exit_clear; /* device disconnected */ if (unlikely(atomic_read(&ep->chip->shutdown))) goto exit_clear; if (unlikely(!ep_state_running(ep))) goto exit_clear; if (usb_pipeout(ep->pipe)) { retire_outbound_urb(ep, ctx); /* can be stopped during retire callback */ if (unlikely(!ep_state_running(ep))) goto exit_clear; /* in low-latency and implicit-feedback modes, push back the * URB to ready list at first, then process as much as possible */ if (ep->lowlatency_playback || snd_usb_endpoint_implicit_feedback_sink(ep)) { push_back_to_ready_list(ep, ctx); clear_bit(ctx->index, &ep->active_mask); snd_usb_queue_pending_output_urbs(ep, false); /* decrement at last, and check xrun */ if (atomic_dec_and_test(&ep->submitted_urbs) && !snd_usb_endpoint_implicit_feedback_sink(ep)) notify_xrun(ep); return; } /* in non-lowlatency mode, no error handling for prepare */ prepare_outbound_urb(ep, ctx, false); /* can be stopped during prepare callback */ if (unlikely(!ep_state_running(ep))) goto exit_clear; } else { retire_inbound_urb(ep, ctx); /* can be stopped during retire callback */ if (unlikely(!ep_state_running(ep))) goto exit_clear; prepare_inbound_urb(ep, ctx); } if (!atomic_read(&ep->chip->shutdown)) err = usb_submit_urb(urb, GFP_ATOMIC); else err = -ENODEV; if (err == 0) return; if (!atomic_read(&ep->chip->shutdown)) { usb_audio_err(ep->chip, "cannot submit urb (err = %d)\n", err); notify_xrun(ep); } exit_clear: clear_bit(ctx->index, &ep->active_mask); atomic_dec(&ep->submitted_urbs); } /* * Find or create a refcount object for the given interface * * The objects are released altogether in snd_usb_endpoint_free_all() */ static struct snd_usb_iface_ref * iface_ref_find(struct snd_usb_audio *chip, int iface) { struct snd_usb_iface_ref *ip; list_for_each_entry(ip, &chip->iface_ref_list, list) if (ip->iface == iface) return ip; ip = kzalloc(sizeof(*ip), GFP_KERNEL); if (!ip) return NULL; ip->iface = iface; list_add_tail(&ip->list, &chip->iface_ref_list); return ip; } /* Similarly, a refcount object for clock */ static struct snd_usb_clock_ref * clock_ref_find(struct snd_usb_audio *chip, int clock) { struct snd_usb_clock_ref *ref; list_for_each_entry(ref, &chip->clock_ref_list, list) if (ref->clock == clock) return ref; ref = kzalloc(sizeof(*ref), GFP_KERNEL); if (!ref) return NULL; ref->clock = clock; atomic_set(&ref->locked, 0); list_add_tail(&ref->list, &chip->clock_ref_list); return ref; } /* * Get the existing endpoint object corresponding EP * Returns NULL if not present. */ struct snd_usb_endpoint * snd_usb_get_endpoint(struct snd_usb_audio *chip, int ep_num) { struct snd_usb_endpoint *ep; list_for_each_entry(ep, &chip->ep_list, list) { if (ep->ep_num == ep_num) return ep; } return NULL; } #define ep_type_name(type) \ (type == SND_USB_ENDPOINT_TYPE_DATA ? "data" : "sync") /** * snd_usb_add_endpoint: Add an endpoint to an USB audio chip * * @chip: The chip * @ep_num: The number of the endpoint to use * @type: SND_USB_ENDPOINT_TYPE_DATA or SND_USB_ENDPOINT_TYPE_SYNC * * If the requested endpoint has not been added to the given chip before, * a new instance is created. * * Returns zero on success or a negative error code. * * New endpoints will be added to chip->ep_list and freed by * calling snd_usb_endpoint_free_all(). * * For SND_USB_ENDPOINT_TYPE_SYNC, the caller needs to guarantee that * bNumEndpoints > 1 beforehand. */ int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type) { struct snd_usb_endpoint *ep; bool is_playback; ep = snd_usb_get_endpoint(chip, ep_num); if (ep) return 0; usb_audio_dbg(chip, "Creating new %s endpoint #%x\n", ep_type_name(type), ep_num); ep = kzalloc(sizeof(*ep), GFP_KERNEL); if (!ep) return -ENOMEM; ep->chip = chip; spin_lock_init(&ep->lock); ep->type = type; ep->ep_num = ep_num; INIT_LIST_HEAD(&ep->ready_playback_urbs); atomic_set(&ep->submitted_urbs, 0); is_playback = ((ep_num & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT); ep_num &= USB_ENDPOINT_NUMBER_MASK; if (is_playback) ep->pipe = usb_sndisocpipe(chip->dev, ep_num); else ep->pipe = usb_rcvisocpipe(chip->dev, ep_num); list_add_tail(&ep->list, &chip->ep_list); return 0; } /* Set up syncinterval and maxsyncsize for a sync EP */ static void endpoint_set_syncinterval(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep) { struct usb_host_interface *alts; struct usb_endpoint_descriptor *desc; alts = snd_usb_get_host_interface(chip, ep->iface, ep->altsetting); if (!alts) return; desc = get_endpoint(alts, ep->ep_idx); if (desc->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && desc->bRefresh >= 1 && desc->bRefresh <= 9) ep->syncinterval = desc->bRefresh; else if (snd_usb_get_speed(chip->dev) == USB_SPEED_FULL) ep->syncinterval = 1; else if (desc->bInterval >= 1 && desc->bInterval <= 16) ep->syncinterval = desc->bInterval - 1; else ep->syncinterval = 3; ep->syncmaxsize = le16_to_cpu(desc->wMaxPacketSize); } static bool endpoint_compatible(struct snd_usb_endpoint *ep, const struct audioformat *fp, const struct snd_pcm_hw_params *params) { if (!ep->opened) return false; if (ep->cur_audiofmt != fp) return false; if (ep->cur_rate != params_rate(params) || ep->cur_format != params_format(params) || ep->cur_period_frames != params_period_size(params) || ep->cur_buffer_periods != params_periods(params)) return false; return true; } /* * Check whether the given fp and hw params are compatible with the current * setup of the target EP for implicit feedback sync */ bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep, const struct audioformat *fp, const struct snd_pcm_hw_params *params) { bool ret; mutex_lock(&chip->mutex); ret = endpoint_compatible(ep, fp, params); mutex_unlock(&chip->mutex); return ret; } /* * snd_usb_endpoint_open: Open the endpoint * * Called from hw_params to assign the endpoint to the substream. * It's reference-counted, and only the first opener is allowed to set up * arbitrary parameters. The later opener must be compatible with the * former opened parameters. * The endpoint needs to be closed via snd_usb_endpoint_close() later. * * Note that this function doesn't configure the endpoint. The substream * needs to set it up later via snd_usb_endpoint_set_params() and * snd_usb_endpoint_prepare(). */ struct snd_usb_endpoint * snd_usb_endpoint_open(struct snd_usb_audio *chip, const struct audioformat *fp, const struct snd_pcm_hw_params *params, bool is_sync_ep, bool fixed_rate) { struct snd_usb_endpoint *ep; int ep_num = is_sync_ep ? fp->sync_ep : fp->endpoint; mutex_lock(&chip->mutex); ep = snd_usb_get_endpoint(chip, ep_num); if (!ep) { usb_audio_err(chip, "Cannot find EP 0x%x to open\n", ep_num); goto unlock; } if (!ep->opened) { if (is_sync_ep) { ep->iface = fp->sync_iface; ep->altsetting = fp->sync_altsetting; ep->ep_idx = fp->sync_ep_idx; } else { ep->iface = fp->iface; ep->altsetting = fp->altsetting; ep->ep_idx = fp->ep_idx; } usb_audio_dbg(chip, "Open EP 0x%x, iface=%d:%d, idx=%d\n", ep_num, ep->iface, ep->altsetting, ep->ep_idx); ep->iface_ref = iface_ref_find(chip, ep->iface); if (!ep->iface_ref) { ep = NULL; goto unlock; } if (fp->protocol != UAC_VERSION_1) { ep->clock_ref = clock_ref_find(chip, fp->clock); if (!ep->clock_ref) { ep = NULL; goto unlock; } ep->clock_ref->opened++; } ep->cur_audiofmt = fp; ep->cur_channels = fp->channels; ep->cur_rate = params_rate(params); ep->cur_format = params_format(params); ep->cur_frame_bytes = snd_pcm_format_physical_width(ep->cur_format) * ep->cur_channels / 8; ep->cur_period_frames = params_period_size(params); ep->cur_period_bytes = ep->cur_period_frames * ep->cur_frame_bytes; ep->cur_buffer_periods = params_periods(params); if (ep->type == SND_USB_ENDPOINT_TYPE_SYNC) endpoint_set_syncinterval(chip, ep); ep->implicit_fb_sync = fp->implicit_fb; ep->need_setup = true; ep->need_prepare = true; ep->fixed_rate = fixed_rate; usb_audio_dbg(chip, " channels=%d, rate=%d, format=%s, period_bytes=%d, periods=%d, implicit_fb=%d\n", ep->cur_channels, ep->cur_rate, snd_pcm_format_name(ep->cur_format), ep->cur_period_bytes, ep->cur_buffer_periods, ep->implicit_fb_sync); } else { if (WARN_ON(!ep->iface_ref)) { ep = NULL; goto unlock; } if (!endpoint_compatible(ep, fp, params)) { usb_audio_err(chip, "Incompatible EP setup for 0x%x\n", ep_num); ep = NULL; goto unlock; } usb_audio_dbg(chip, "Reopened EP 0x%x (count %d)\n", ep_num, ep->opened); } if (!ep->iface_ref->opened++) ep->iface_ref->need_setup = true; ep->opened++; unlock: mutex_unlock(&chip->mutex); return ep; } /* * snd_usb_endpoint_set_sync: Link data and sync endpoints * * Pass NULL to sync_ep to unlink again */ void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip, struct snd_usb_endpoint *data_ep, struct snd_usb_endpoint *sync_ep) { data_ep->sync_source = sync_ep; } /* * Set data endpoint callbacks and the assigned data stream * * Called at PCM trigger and cleanups. * Pass NULL to deactivate each callback. */ void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep, int (*prepare)(struct snd_usb_substream *subs, struct urb *urb, bool in_stream_lock), void (*retire)(struct snd_usb_substream *subs, struct urb *urb), struct snd_usb_substream *data_subs) { ep->prepare_data_urb = prepare; ep->retire_data_urb = retire; if (data_subs) ep->lowlatency_playback = data_subs->lowlatency_playback; else ep->lowlatency_playback = false; WRITE_ONCE(ep->data_subs, data_subs); } static int endpoint_set_interface(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep, bool set) { int altset = set ? ep->altsetting : 0; int err; int retries = 0; const int max_retries = 5; if (ep->iface_ref->altset == altset) return 0; /* already disconnected? */ if (unlikely(atomic_read(&chip->shutdown))) return -ENODEV; usb_audio_dbg(chip, "Setting usb interface %d:%d for EP 0x%x\n", ep->iface, altset, ep->ep_num); retry: err = usb_set_interface(chip->dev, ep->iface, altset); if (err < 0) { if (err == -EPROTO && ++retries <= max_retries) { msleep(5 * (1 << (retries - 1))); goto retry; } usb_audio_err_ratelimited( chip, "%d:%d: usb_set_interface failed (%d)\n", ep->iface, altset, err); return err; } if (chip->quirk_flags & QUIRK_FLAG_IFACE_DELAY) msleep(50); ep->iface_ref->altset = altset; return 0; } /* * snd_usb_endpoint_close: Close the endpoint * * Unreference the already opened endpoint via snd_usb_endpoint_open(). */ void snd_usb_endpoint_close(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep) { mutex_lock(&chip->mutex); usb_audio_dbg(chip, "Closing EP 0x%x (count %d)\n", ep->ep_num, ep->opened); if (!--ep->iface_ref->opened && !(chip->quirk_flags & QUIRK_FLAG_IFACE_SKIP_CLOSE)) endpoint_set_interface(chip, ep, false); if (!--ep->opened) { if (ep->clock_ref) { if (!--ep->clock_ref->opened) ep->clock_ref->rate = 0; } ep->iface = 0; ep->altsetting = 0; ep->cur_audiofmt = NULL; ep->cur_rate = 0; ep->iface_ref = NULL; ep->clock_ref = NULL; usb_audio_dbg(chip, "EP 0x%x closed\n", ep->ep_num); } mutex_unlock(&chip->mutex); } /* Prepare for suspening EP, called from the main suspend handler */ void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep) { ep->need_prepare = true; if (ep->iface_ref) ep->iface_ref->need_setup = true; if (ep->clock_ref) ep->clock_ref->rate = 0; } /* * wait until all urbs are processed. */ static int wait_clear_urbs(struct snd_usb_endpoint *ep) { unsigned long end_time = jiffies + msecs_to_jiffies(1000); int alive; if (atomic_read(&ep->state) != EP_STATE_STOPPING) return 0; do { alive = atomic_read(&ep->submitted_urbs); if (!alive) break; schedule_timeout_uninterruptible(1); } while (time_before(jiffies, end_time)); if (alive) usb_audio_err(ep->chip, "timeout: still %d active urbs on EP #%x\n", alive, ep->ep_num); if (ep_state_update(ep, EP_STATE_STOPPING, EP_STATE_STOPPED)) { ep->sync_sink = NULL; snd_usb_endpoint_set_callback(ep, NULL, NULL, NULL); } return 0; } /* sync the pending stop operation; * this function itself doesn't trigger the stop operation */ void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep) { if (ep) wait_clear_urbs(ep); } /* * Stop active urbs * * This function moves the EP to STOPPING state if it's being RUNNING. */ static int stop_urbs(struct snd_usb_endpoint *ep, bool force, bool keep_pending) { unsigned int i; unsigned long flags; if (!force && atomic_read(&ep->running)) return -EBUSY; if (!ep_state_update(ep, EP_STATE_RUNNING, EP_STATE_STOPPING)) return 0; spin_lock_irqsave(&ep->lock, flags); INIT_LIST_HEAD(&ep->ready_playback_urbs); ep->next_packet_head = 0; ep->next_packet_queued = 0; spin_unlock_irqrestore(&ep->lock, flags); if (keep_pending) return 0; for (i = 0; i < ep->nurbs; i++) { if (test_bit(i, &ep->active_mask)) { if (!test_and_set_bit(i, &ep->unlink_mask)) { struct urb *u = ep->urb[i].urb; usb_unlink_urb(u); } } } return 0; } /* * release an endpoint's urbs */ static int release_urbs(struct snd_usb_endpoint *ep, bool force) { int i, err; /* route incoming urbs to nirvana */ snd_usb_endpoint_set_callback(ep, NULL, NULL, NULL); /* stop and unlink urbs */ err = stop_urbs(ep, force, false); if (err) return err; wait_clear_urbs(ep); for (i = 0; i < ep->nurbs; i++) release_urb_ctx(&ep->urb[i]); usb_free_coherent(ep->chip->dev, SYNC_URBS * 4, ep->syncbuf, ep->sync_dma); ep->syncbuf = NULL; ep->nurbs = 0; return 0; } /* * configure a data endpoint */ static int data_ep_set_params(struct snd_usb_endpoint *ep) { struct snd_usb_audio *chip = ep->chip; unsigned int maxsize, minsize, packs_per_ms, max_packs_per_urb; unsigned int max_packs_per_period, urbs_per_period, urb_packs; unsigned int max_urbs, i; const struct audioformat *fmt = ep->cur_audiofmt; int frame_bits = ep->cur_frame_bytes * 8; int tx_length_quirk = (has_tx_length_quirk(chip) && usb_pipeout(ep->pipe)); usb_audio_dbg(chip, "Setting params for data EP 0x%x, pipe 0x%x\n", ep->ep_num, ep->pipe); if (ep->cur_format == SNDRV_PCM_FORMAT_DSD_U16_LE && fmt->dsd_dop) { /* * When operating in DSD DOP mode, the size of a sample frame * in hardware differs from the actual physical format width * because we need to make room for the DOP markers. */ frame_bits += ep->cur_channels << 3; } ep->datainterval = fmt->datainterval; ep->stride = frame_bits >> 3; switch (ep->cur_format) { case SNDRV_PCM_FORMAT_U8: ep->silence_value = 0x80; break; case SNDRV_PCM_FORMAT_DSD_U8: case SNDRV_PCM_FORMAT_DSD_U16_LE: case SNDRV_PCM_FORMAT_DSD_U32_LE: case SNDRV_PCM_FORMAT_DSD_U16_BE: case SNDRV_PCM_FORMAT_DSD_U32_BE: ep->silence_value = 0x69; break; default: ep->silence_value = 0; } /* assume max. frequency is 50% higher than nominal */ ep->freqmax = ep->freqn + (ep->freqn >> 1); /* Round up freqmax to nearest integer in order to calculate maximum * packet size, which must represent a whole number of frames. * This is accomplished by adding 0x0.ffff before converting the * Q16.16 format into integer. * In order to accurately calculate the maximum packet size when * the data interval is more than 1 (i.e. ep->datainterval > 0), * multiply by the data interval prior to rounding. For instance, * a freqmax of 41 kHz will result in a max packet size of 6 (5.125) * frames with a data interval of 1, but 11 (10.25) frames with a * data interval of 2. * (ep->freqmax << ep->datainterval overflows at 8.192 MHz for the * maximum datainterval value of 3, at USB full speed, higher for * USB high speed, noting that ep->freqmax is in units of * frames per packet in Q16.16 format.) */ maxsize = (((ep->freqmax << ep->datainterval) + 0xffff) >> 16) * (frame_bits >> 3); if (tx_length_quirk) maxsize += sizeof(__le32); /* Space for length descriptor */ /* but wMaxPacketSize might reduce this */ if (ep->maxpacksize && ep->maxpacksize < maxsize) { /* whatever fits into a max. size packet */ unsigned int data_maxsize = maxsize = ep->maxpacksize; if (tx_length_quirk) /* Need to remove the length descriptor to calc freq */ data_maxsize -= sizeof(__le32); ep->freqmax = (data_maxsize / (frame_bits >> 3)) << (16 - ep->datainterval); } if (ep->fill_max) ep->curpacksize = ep->maxpacksize; else ep->curpacksize = maxsize; if (snd_usb_get_speed(chip->dev) != USB_SPEED_FULL) { packs_per_ms = 8 >> ep->datainterval; max_packs_per_urb = MAX_PACKS_HS; } else { packs_per_ms = 1; max_packs_per_urb = MAX_PACKS; } if (ep->sync_source && !ep->implicit_fb_sync) max_packs_per_urb = min(max_packs_per_urb, 1U << ep->sync_source->syncinterval); max_packs_per_urb = max(1u, max_packs_per_urb >> ep->datainterval); /* * Capture endpoints need to use small URBs because there's no way * to tell in advance where the next period will end, and we don't * want the next URB to complete much after the period ends. * * Playback endpoints with implicit sync much use the same parameters * as their corresponding capture endpoint. */ if (usb_pipein(ep->pipe) || ep->implicit_fb_sync) { /* make capture URBs <= 1 ms and smaller than a period */ urb_packs = min(max_packs_per_urb, packs_per_ms); while (urb_packs > 1 && urb_packs * maxsize >= ep->cur_period_bytes) urb_packs >>= 1; ep->nurbs = MAX_URBS; /* * Playback endpoints without implicit sync are adjusted so that * a period fits as evenly as possible in the smallest number of * URBs. The total number of URBs is adjusted to the size of the * ALSA buffer, subject to the MAX_URBS and MAX_QUEUE limits. */ } else { /* determine how small a packet can be */ minsize = (ep->freqn >> (16 - ep->datainterval)) * (frame_bits >> 3); /* with sync from device, assume it can be 12% lower */ if (ep->sync_source) minsize -= minsize >> 3; minsize = max(minsize, 1u); /* how many packets will contain an entire ALSA period? */ max_packs_per_period = DIV_ROUND_UP(ep->cur_period_bytes, minsize); /* how many URBs will contain a period? */ urbs_per_period = DIV_ROUND_UP(max_packs_per_period, max_packs_per_urb); /* how many packets are needed in each URB? */ urb_packs = DIV_ROUND_UP(max_packs_per_period, urbs_per_period); /* limit the number of frames in a single URB */ ep->max_urb_frames = DIV_ROUND_UP(ep->cur_period_frames, urbs_per_period); /* try to use enough URBs to contain an entire ALSA buffer */ max_urbs = min((unsigned) MAX_URBS, MAX_QUEUE * packs_per_ms / urb_packs); ep->nurbs = min(max_urbs, urbs_per_period * ep->cur_buffer_periods); } /* allocate and initialize data urbs */ for (i = 0; i < ep->nurbs; i++) { struct snd_urb_ctx *u = &ep->urb[i]; u->index = i; u->ep = ep; u->packets = urb_packs; u->buffer_size = maxsize * u->packets; if (fmt->fmt_type == UAC_FORMAT_TYPE_II) u->packets++; /* for transfer delimiter */ u->urb = usb_alloc_urb(u->packets, GFP_KERNEL); if (!u->urb) goto out_of_memory; u->urb->transfer_buffer = usb_alloc_coherent(chip->dev, u->buffer_size, GFP_KERNEL, &u->urb->transfer_dma); if (!u->urb->transfer_buffer) goto out_of_memory; u->urb->pipe = ep->pipe; u->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; u->urb->interval = 1 << ep->datainterval; u->urb->context = u; u->urb->complete = snd_complete_urb; INIT_LIST_HEAD(&u->ready_list); } return 0; out_of_memory: release_urbs(ep, false); return -ENOMEM; } /* * configure a sync endpoint */ static int sync_ep_set_params(struct snd_usb_endpoint *ep) { struct snd_usb_audio *chip = ep->chip; int i; usb_audio_dbg(chip, "Setting params for sync EP 0x%x, pipe 0x%x\n", ep->ep_num, ep->pipe); ep->syncbuf = usb_alloc_coherent(chip->dev, SYNC_URBS * 4, GFP_KERNEL, &ep->sync_dma); if (!ep->syncbuf) return -ENOMEM; ep->nurbs = SYNC_URBS; for (i = 0; i < SYNC_URBS; i++) { struct snd_urb_ctx *u = &ep->urb[i]; u->index = i; u->ep = ep; u->packets = 1; u->urb = usb_alloc_urb(1, GFP_KERNEL); if (!u->urb) goto out_of_memory; u->urb->transfer_buffer = ep->syncbuf + i * 4; u->urb->transfer_dma = ep->sync_dma + i * 4; u->urb->transfer_buffer_length = 4; u->urb->pipe = ep->pipe; u->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; u->urb->number_of_packets = 1; u->urb->interval = 1 << ep->syncinterval; u->urb->context = u; u->urb->complete = snd_complete_urb; } return 0; out_of_memory: release_urbs(ep, false); return -ENOMEM; } /* update the rate of the referred clock; return the actual rate */ static int update_clock_ref_rate(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep) { struct snd_usb_clock_ref *clock = ep->clock_ref; int rate = ep->cur_rate; if (!clock || clock->rate == rate) return rate; if (clock->rate) { if (atomic_read(&clock->locked)) return clock->rate; if (clock->rate != rate) { usb_audio_err(chip, "Mismatched sample rate %d vs %d for EP 0x%x\n", clock->rate, rate, ep->ep_num); return clock->rate; } } clock->rate = rate; clock->need_setup = true; return rate; } /* * snd_usb_endpoint_set_params: configure an snd_usb_endpoint * * It's called either from hw_params callback. * Determine the number of URBs to be used on this endpoint. * An endpoint must be configured before it can be started. * An endpoint that is already running can not be reconfigured. */ int snd_usb_endpoint_set_params(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep) { const struct audioformat *fmt = ep->cur_audiofmt; int err = 0; mutex_lock(&chip->mutex); if (!ep->need_setup) goto unlock; /* release old buffers, if any */ err = release_urbs(ep, false); if (err < 0) goto unlock; ep->datainterval = fmt->datainterval; ep->maxpacksize = fmt->maxpacksize; ep->fill_max = !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX); if (snd_usb_get_speed(chip->dev) == USB_SPEED_FULL) { ep->freqn = get_usb_full_speed_rate(ep->cur_rate); ep->pps = 1000 >> ep->datainterval; } else { ep->freqn = get_usb_high_speed_rate(ep->cur_rate); ep->pps = 8000 >> ep->datainterval; } ep->sample_rem = ep->cur_rate % ep->pps; ep->packsize[0] = ep->cur_rate / ep->pps; ep->packsize[1] = (ep->cur_rate + (ep->pps - 1)) / ep->pps; /* calculate the frequency in 16.16 format */ ep->freqm = ep->freqn; ep->freqshift = INT_MIN; ep->phase = 0; switch (ep->type) { case SND_USB_ENDPOINT_TYPE_DATA: err = data_ep_set_params(ep); break; case SND_USB_ENDPOINT_TYPE_SYNC: err = sync_ep_set_params(ep); break; default: err = -EINVAL; } usb_audio_dbg(chip, "Set up %d URBS, ret=%d\n", ep->nurbs, err); if (err < 0) goto unlock; /* some unit conversions in runtime */ ep->maxframesize = ep->maxpacksize / ep->cur_frame_bytes; ep->curframesize = ep->curpacksize / ep->cur_frame_bytes; err = update_clock_ref_rate(chip, ep); if (err >= 0) { ep->need_setup = false; err = 0; } unlock: mutex_unlock(&chip->mutex); return err; } static int init_sample_rate(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep) { struct snd_usb_clock_ref *clock = ep->clock_ref; int rate, err; rate = update_clock_ref_rate(chip, ep); if (rate < 0) return rate; if (clock && !clock->need_setup) return 0; if (!ep->fixed_rate) { err = snd_usb_init_sample_rate(chip, ep->cur_audiofmt, rate); if (err < 0) { if (clock) clock->rate = 0; /* reset rate */ return err; } } if (clock) clock->need_setup = false; return 0; } /* * snd_usb_endpoint_prepare: Prepare the endpoint * * This function sets up the EP to be fully usable state. * It's called either from prepare callback. * The function checks need_setup flag, and performs nothing unless needed, * so it's safe to call this multiple times. * * This returns zero if unchanged, 1 if the configuration has changed, * or a negative error code. */ int snd_usb_endpoint_prepare(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep) { bool iface_first; int err = 0; mutex_lock(&chip->mutex); if (WARN_ON(!ep->iface_ref)) goto unlock; if (!ep->need_prepare) goto unlock; /* If the interface has been already set up, just set EP parameters */ if (!ep->iface_ref->need_setup) { /* sample rate setup of UAC1 is per endpoint, and we need * to update at each EP configuration */ if (ep->cur_audiofmt->protocol == UAC_VERSION_1) { err = init_sample_rate(chip, ep); if (err < 0) goto unlock; } goto done; } /* Need to deselect altsetting at first */ endpoint_set_interface(chip, ep, false); /* Some UAC1 devices (e.g. Yamaha THR10) need the host interface * to be set up before parameter setups */ iface_first = ep->cur_audiofmt->protocol == UAC_VERSION_1; /* Workaround for devices that require the interface setup at first like UAC1 */ if (chip->quirk_flags & QUIRK_FLAG_SET_IFACE_FIRST) iface_first = true; if (iface_first) { err = endpoint_set_interface(chip, ep, true); if (err < 0) goto unlock; } err = snd_usb_init_pitch(chip, ep->cur_audiofmt); if (err < 0) goto unlock; err = init_sample_rate(chip, ep); if (err < 0) goto unlock; err = snd_usb_select_mode_quirk(chip, ep->cur_audiofmt); if (err < 0) goto unlock; /* for UAC2/3, enable the interface altset here at last */ if (!iface_first) { err = endpoint_set_interface(chip, ep, true); if (err < 0) goto unlock; } ep->iface_ref->need_setup = false; done: ep->need_prepare = false; err = 1; unlock: mutex_unlock(&chip->mutex); return err; } EXPORT_SYMBOL_GPL(snd_usb_endpoint_prepare); /* get the current rate set to the given clock by any endpoint */ int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock) { struct snd_usb_clock_ref *ref; int rate = 0; if (!clock) return 0; mutex_lock(&chip->mutex); list_for_each_entry(ref, &chip->clock_ref_list, list) { if (ref->clock == clock) { rate = ref->rate; break; } } mutex_unlock(&chip->mutex); return rate; } /** * snd_usb_endpoint_start: start an snd_usb_endpoint * * @ep: the endpoint to start * * A call to this function will increment the running count of the endpoint. * In case it is not already running, the URBs for this endpoint will be * submitted. Otherwise, this function does nothing. * * Must be balanced to calls of snd_usb_endpoint_stop(). * * Returns an error if the URB submission failed, 0 in all other cases. */ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep) { bool is_playback = usb_pipeout(ep->pipe); int err; unsigned int i; if (atomic_read(&ep->chip->shutdown)) return -EBADFD; if (ep->sync_source) WRITE_ONCE(ep->sync_source->sync_sink, ep); usb_audio_dbg(ep->chip, "Starting %s EP 0x%x (running %d)\n", ep_type_name(ep->type), ep->ep_num, atomic_read(&ep->running)); /* already running? */ if (atomic_inc_return(&ep->running) != 1) return 0; if (ep->clock_ref) atomic_inc(&ep->clock_ref->locked); ep->active_mask = 0; ep->unlink_mask = 0; ep->phase = 0; ep->sample_accum = 0; snd_usb_endpoint_start_quirk(ep); /* * If this endpoint has a data endpoint as implicit feedback source, * don't start the urbs here. Instead, mark them all as available, * wait for the record urbs to return and queue the playback urbs * from that context. */ if (!ep_state_update(ep, EP_STATE_STOPPED, EP_STATE_RUNNING)) goto __error; if (snd_usb_endpoint_implicit_feedback_sink(ep) && !(ep->chip->quirk_flags & QUIRK_FLAG_PLAYBACK_FIRST)) { usb_audio_dbg(ep->chip, "No URB submission due to implicit fb sync\n"); i = 0; goto fill_rest; } for (i = 0; i < ep->nurbs; i++) { struct urb *urb = ep->urb[i].urb; if (snd_BUG_ON(!urb)) goto __error; if (is_playback) err = prepare_outbound_urb(ep, urb->context, true); else err = prepare_inbound_urb(ep, urb->context); if (err < 0) { /* stop filling at applptr */ if (err == -EAGAIN) break; usb_audio_dbg(ep->chip, "EP 0x%x: failed to prepare urb: %d\n", ep->ep_num, err); goto __error; } if (!atomic_read(&ep->chip->shutdown)) err = usb_submit_urb(urb, GFP_ATOMIC); else err = -ENODEV; if (err < 0) { if (!atomic_read(&ep->chip->shutdown)) usb_audio_err(ep->chip, "cannot submit urb %d, error %d: %s\n", i, err, usb_error_string(err)); goto __error; } set_bit(i, &ep->active_mask); atomic_inc(&ep->submitted_urbs); } if (!i) { usb_audio_dbg(ep->chip, "XRUN at starting EP 0x%x\n", ep->ep_num); goto __error; } usb_audio_dbg(ep->chip, "%d URBs submitted for EP 0x%x\n", i, ep->ep_num); fill_rest: /* put the remaining URBs to ready list */ if (is_playback) { for (; i < ep->nurbs; i++) push_back_to_ready_list(ep, ep->urb + i); } return 0; __error: snd_usb_endpoint_stop(ep, false); return -EPIPE; } /** * snd_usb_endpoint_stop: stop an snd_usb_endpoint * * @ep: the endpoint to stop (may be NULL) * @keep_pending: keep in-flight URBs * * A call to this function will decrement the running count of the endpoint. * In case the last user has requested the endpoint stop, the URBs will * actually be deactivated. * * Must be balanced to calls of snd_usb_endpoint_start(). * * The caller needs to synchronize the pending stop operation via * snd_usb_endpoint_sync_pending_stop(). */ void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, bool keep_pending) { if (!ep) return; usb_audio_dbg(ep->chip, "Stopping %s EP 0x%x (running %d)\n", ep_type_name(ep->type), ep->ep_num, atomic_read(&ep->running)); if (snd_BUG_ON(!atomic_read(&ep->running))) return; if (!atomic_dec_return(&ep->running)) { if (ep->sync_source) WRITE_ONCE(ep->sync_source->sync_sink, NULL); stop_urbs(ep, false, keep_pending); if (ep->clock_ref) atomic_dec(&ep->clock_ref->locked); if (ep->chip->quirk_flags & QUIRK_FLAG_FORCE_IFACE_RESET && usb_pipeout(ep->pipe)) { ep->need_prepare = true; if (ep->iface_ref) ep->iface_ref->need_setup = true; } } } /** * snd_usb_endpoint_release: Tear down an snd_usb_endpoint * * @ep: the endpoint to release * * This function does not care for the endpoint's running count but will tear * down all the streaming URBs immediately. */ void snd_usb_endpoint_release(struct snd_usb_endpoint *ep) { release_urbs(ep, true); } /** * snd_usb_endpoint_free_all: Free the resources of an snd_usb_endpoint * @chip: The chip * * This free all endpoints and those resources */ void snd_usb_endpoint_free_all(struct snd_usb_audio *chip) { struct snd_usb_endpoint *ep, *en; struct snd_usb_iface_ref *ip, *in; struct snd_usb_clock_ref *cp, *cn; list_for_each_entry_safe(ep, en, &chip->ep_list, list) kfree(ep); list_for_each_entry_safe(ip, in, &chip->iface_ref_list, list) kfree(ip); list_for_each_entry_safe(cp, cn, &chip->clock_ref_list, list) kfree(cp); } /* * snd_usb_handle_sync_urb: parse an USB sync packet * * @ep: the endpoint to handle the packet * @sender: the sending endpoint * @urb: the received packet * * This function is called from the context of an endpoint that received * the packet and is used to let another endpoint object handle the payload. */ static void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, struct snd_usb_endpoint *sender, const struct urb *urb) { int shift; unsigned int f; unsigned long flags; snd_BUG_ON(ep == sender); /* * In case the endpoint is operating in implicit feedback mode, prepare * a new outbound URB that has the same layout as the received packet * and add it to the list of pending urbs. queue_pending_output_urbs() * will take care of them later. */ if (snd_usb_endpoint_implicit_feedback_sink(ep) && atomic_read(&ep->running)) { /* implicit feedback case */ int i, bytes = 0; struct snd_urb_ctx *in_ctx; struct snd_usb_packet_info *out_packet; in_ctx = urb->context; /* Count overall packet size */ for (i = 0; i < in_ctx->packets; i++) if (urb->iso_frame_desc[i].status == 0) bytes += urb->iso_frame_desc[i].actual_length; /* * skip empty packets. At least M-Audio's Fast Track Ultra stops * streaming once it received a 0-byte OUT URB */ if (bytes == 0) return; spin_lock_irqsave(&ep->lock, flags); if (ep->next_packet_queued >= ARRAY_SIZE(ep->next_packet)) { spin_unlock_irqrestore(&ep->lock, flags); usb_audio_err(ep->chip, "next package FIFO overflow EP 0x%x\n", ep->ep_num); notify_xrun(ep); return; } out_packet = next_packet_fifo_enqueue(ep); /* * Iterate through the inbound packet and prepare the lengths * for the output packet. The OUT packet we are about to send * will have the same amount of payload bytes per stride as the * IN packet we just received. Since the actual size is scaled * by the stride, use the sender stride to calculate the length * in case the number of channels differ between the implicitly * fed-back endpoint and the synchronizing endpoint. */ out_packet->packets = in_ctx->packets; for (i = 0; i < in_ctx->packets; i++) { if (urb->iso_frame_desc[i].status == 0) out_packet->packet_size[i] = urb->iso_frame_desc[i].actual_length / sender->stride; else out_packet->packet_size[i] = 0; } spin_unlock_irqrestore(&ep->lock, flags); snd_usb_queue_pending_output_urbs(ep, false); return; } /* * process after playback sync complete * * Full speed devices report feedback values in 10.14 format as samples * per frame, high speed devices in 16.16 format as samples per * microframe. * * Because the Audio Class 1 spec was written before USB 2.0, many high * speed devices use a wrong interpretation, some others use an * entirely different format. * * Therefore, we cannot predict what format any particular device uses * and must detect it automatically. */ if (urb->iso_frame_desc[0].status != 0 || urb->iso_frame_desc[0].actual_length < 3) return; f = le32_to_cpup(urb->transfer_buffer); if (urb->iso_frame_desc[0].actual_length == 3) f &= 0x00ffffff; else f &= 0x0fffffff; if (f == 0) return; if (unlikely(sender->tenor_fb_quirk)) { /* * Devices based on Tenor 8802 chipsets (TEAC UD-H01 * and others) sometimes change the feedback value * by +/- 0x1.0000. */ if (f < ep->freqn - 0x8000) f += 0xf000; else if (f > ep->freqn + 0x8000) f -= 0xf000; } else if (unlikely(ep->freqshift == INT_MIN)) { /* * The first time we see a feedback value, determine its format * by shifting it left or right until it matches the nominal * frequency value. This assumes that the feedback does not * differ from the nominal value more than +50% or -25%. */ shift = 0; while (f < ep->freqn - ep->freqn / 4) { f <<= 1; shift++; } while (f > ep->freqn + ep->freqn / 2) { f >>= 1; shift--; } ep->freqshift = shift; } else if (ep->freqshift >= 0) f <<= ep->freqshift; else f >>= -ep->freqshift; if (likely(f >= ep->freqn - ep->freqn / 8 && f <= ep->freqmax)) { /* * If the frequency looks valid, set it. * This value is referred to in prepare_playback_urb(). */ spin_lock_irqsave(&ep->lock, flags); ep->freqm = f; spin_unlock_irqrestore(&ep->lock, flags); } else { /* * Out of range; maybe the shift value is wrong. * Reset it so that we autodetect again the next time. */ ep->freqshift = INT_MIN; } } |
| 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 | /* SPDX-License-Identifier: GPL-2.0 */ #undef TRACE_SYSTEM #define TRACE_SYSTEM vsyscall #if !defined(__VSYSCALL_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) #define __VSYSCALL_TRACE_H #include <linux/tracepoint.h> TRACE_EVENT(emulate_vsyscall, TP_PROTO(int nr), TP_ARGS(nr), TP_STRUCT__entry(__field(int, nr)), TP_fast_assign( __entry->nr = nr; ), TP_printk("nr = %d", __entry->nr) ); #endif #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH ../../arch/x86/entry/vsyscall/ #define TRACE_INCLUDE_FILE vsyscall_trace #include <trace/define_trace.h> |
| 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * TerraTec Cinergy T2/qanu USB2 DVB-T adapter. * * Copyright (C) 2007 Tomi Orava (tomimo@ncircle.nullnet.fi) * * Based on the dvb-usb-framework code and the * original Terratec Cinergy T2 driver by: * * Copyright (C) 2004 Daniel Mack <daniel@qanu.de> and * Holger Waechtler <holger@qanu.de> * * Protocol Spec published on http://qanu.de/specs/terratec_cinergyT2.pdf */ #include "cinergyT2.h" /* * convert linux-dvb frontend parameter set into TPS. * See ETSI ETS-300744, section 4.6.2, table 9 for details. * * This function is probably reusable and may better get placed in a support * library. * * We replace erroneous fields by default TPS fields (the ones with value 0). */ static uint16_t compute_tps(struct dtv_frontend_properties *op) { uint16_t tps = 0; switch (op->code_rate_HP) { case FEC_2_3: tps |= (1 << 7); break; case FEC_3_4: tps |= (2 << 7); break; case FEC_5_6: tps |= (3 << 7); break; case FEC_7_8: tps |= (4 << 7); break; case FEC_1_2: case FEC_AUTO: default: /* tps |= (0 << 7) */; } switch (op->code_rate_LP) { case FEC_2_3: tps |= (1 << 4); break; case FEC_3_4: tps |= (2 << 4); break; case FEC_5_6: tps |= (3 << 4); break; case FEC_7_8: tps |= (4 << 4); break; case FEC_1_2: case FEC_AUTO: default: /* tps |= (0 << 4) */; } switch (op->modulation) { case QAM_16: tps |= (1 << 13); break; case QAM_64: tps |= (2 << 13); break; case QPSK: default: /* tps |= (0 << 13) */; } switch (op->transmission_mode) { case TRANSMISSION_MODE_8K: tps |= (1 << 0); break; case TRANSMISSION_MODE_2K: default: /* tps |= (0 << 0) */; } switch (op->guard_interval) { case GUARD_INTERVAL_1_16: tps |= (1 << 2); break; case GUARD_INTERVAL_1_8: tps |= (2 << 2); break; case GUARD_INTERVAL_1_4: tps |= (3 << 2); break; case GUARD_INTERVAL_1_32: default: /* tps |= (0 << 2) */; } switch (op->hierarchy) { case HIERARCHY_1: tps |= (1 << 10); break; case HIERARCHY_2: tps |= (2 << 10); break; case HIERARCHY_4: tps |= (3 << 10); break; case HIERARCHY_NONE: default: /* tps |= (0 << 10) */; } return tps; } struct cinergyt2_fe_state { struct dvb_frontend fe; struct dvb_usb_device *d; unsigned char data[64]; struct mutex data_mutex; struct dvbt_get_status_msg status; }; static int cinergyt2_fe_read_status(struct dvb_frontend *fe, enum fe_status *status) { struct cinergyt2_fe_state *state = fe->demodulator_priv; int ret; mutex_lock(&state->data_mutex); state->data[0] = CINERGYT2_EP1_GET_TUNER_STATUS; ret = dvb_usb_generic_rw(state->d, state->data, 1, state->data, sizeof(state->status), 0); if (!ret) memcpy(&state->status, state->data, sizeof(state->status)); mutex_unlock(&state->data_mutex); if (ret < 0) return ret; *status = 0; if (0xffff - le16_to_cpu(state->status.gain) > 30) *status |= FE_HAS_SIGNAL; if (state->status.lock_bits & (1 << 6)) *status |= FE_HAS_LOCK; if (state->status.lock_bits & (1 << 5)) *status |= FE_HAS_SYNC; if (state->status.lock_bits & (1 << 4)) *status |= FE_HAS_CARRIER; if (state->status.lock_bits & (1 << 1)) *status |= FE_HAS_VITERBI; if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) != (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) *status &= ~FE_HAS_LOCK; return 0; } static int cinergyt2_fe_read_ber(struct dvb_frontend *fe, u32 *ber) { struct cinergyt2_fe_state *state = fe->demodulator_priv; *ber = le32_to_cpu(state->status.viterbi_error_rate); return 0; } static int cinergyt2_fe_read_unc_blocks(struct dvb_frontend *fe, u32 *unc) { struct cinergyt2_fe_state *state = fe->demodulator_priv; *unc = le32_to_cpu(state->status.uncorrected_block_count); return 0; } static int cinergyt2_fe_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { struct cinergyt2_fe_state *state = fe->demodulator_priv; *strength = (0xffff - le16_to_cpu(state->status.gain)); return 0; } static int cinergyt2_fe_read_snr(struct dvb_frontend *fe, u16 *snr) { struct cinergyt2_fe_state *state = fe->demodulator_priv; *snr = (state->status.snr << 8) | state->status.snr; return 0; } static int cinergyt2_fe_init(struct dvb_frontend *fe) { return 0; } static int cinergyt2_fe_sleep(struct dvb_frontend *fe) { deb_info("cinergyt2_fe_sleep() Called\n"); return 0; } static int cinergyt2_fe_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *tune) { tune->min_delay_ms = 800; return 0; } static int cinergyt2_fe_set_frontend(struct dvb_frontend *fe) { struct dtv_frontend_properties *fep = &fe->dtv_property_cache; struct cinergyt2_fe_state *state = fe->demodulator_priv; struct dvbt_set_parameters_msg *param; int err; mutex_lock(&state->data_mutex); param = (void *)state->data; param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS; param->tps = cpu_to_le16(compute_tps(fep)); param->freq = cpu_to_le32(fep->frequency / 1000); param->flags = 0; switch (fep->bandwidth_hz) { default: case 8000000: param->bandwidth = 8; break; case 7000000: param->bandwidth = 7; break; case 6000000: param->bandwidth = 6; break; } err = dvb_usb_generic_rw(state->d, state->data, sizeof(*param), state->data, 2, 0); if (err < 0) err("cinergyt2_fe_set_frontend() Failed! err=%d\n", err); mutex_unlock(&state->data_mutex); return (err < 0) ? err : 0; } static void cinergyt2_fe_release(struct dvb_frontend *fe) { struct cinergyt2_fe_state *state = fe->demodulator_priv; kfree(state); } static const struct dvb_frontend_ops cinergyt2_fe_ops; struct dvb_frontend *cinergyt2_fe_attach(struct dvb_usb_device *d) { struct cinergyt2_fe_state *s = kzalloc(sizeof( struct cinergyt2_fe_state), GFP_KERNEL); if (s == NULL) return NULL; s->d = d; memcpy(&s->fe.ops, &cinergyt2_fe_ops, sizeof(struct dvb_frontend_ops)); s->fe.demodulator_priv = s; mutex_init(&s->data_mutex); return &s->fe; } static const struct dvb_frontend_ops cinergyt2_fe_ops = { .delsys = { SYS_DVBT }, .info = { .name = DRIVER_NAME, .frequency_min_hz = 174 * MHz, .frequency_max_hz = 862 * MHz, .frequency_stepsize_hz = 166667, .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_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS }, .release = cinergyt2_fe_release, .init = cinergyt2_fe_init, .sleep = cinergyt2_fe_sleep, .set_frontend = cinergyt2_fe_set_frontend, .get_tune_settings = cinergyt2_fe_get_tune_settings, .read_status = cinergyt2_fe_read_status, .read_ber = cinergyt2_fe_read_ber, .read_signal_strength = cinergyt2_fe_read_signal_strength, .read_snr = cinergyt2_fe_read_snr, .read_ucblocks = cinergyt2_fe_read_unc_blocks, }; 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| 4 3 4 1 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 1 1 1 1 1 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Abilis Systems Single DVB-T Receiver * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com> * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com> */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/mm.h> #include <linux/usb.h> #include "as102_drv.h" #include "as102_usb_drv.h" #include "as102_fw.h" static void as102_usb_disconnect(struct usb_interface *interface); static int as102_usb_probe(struct usb_interface *interface, const struct usb_device_id *id); static int as102_usb_start_stream(struct as102_dev_t *dev); static void as102_usb_stop_stream(struct as102_dev_t *dev); static int as102_open(struct inode *inode, struct file *file); static int as102_release(struct inode *inode, struct file *file); static const struct usb_device_id as102_usb_id_table[] = { { USB_DEVICE(AS102_USB_DEVICE_VENDOR_ID, AS102_USB_DEVICE_PID_0001) }, { USB_DEVICE(PCTV_74E_USB_VID, PCTV_74E_USB_PID) }, { USB_DEVICE(ELGATO_EYETV_DTT_USB_VID, ELGATO_EYETV_DTT_USB_PID) }, { USB_DEVICE(NBOX_DVBT_DONGLE_USB_VID, NBOX_DVBT_DONGLE_USB_PID) }, { USB_DEVICE(SKY_IT_DIGITAL_KEY_USB_VID, SKY_IT_DIGITAL_KEY_USB_PID) }, { } /* Terminating entry */ }; /* Note that this table must always have the same number of entries as the as102_usb_id_table struct */ static const char * const as102_device_names[] = { AS102_REFERENCE_DESIGN, AS102_PCTV_74E, AS102_ELGATO_EYETV_DTT_NAME, AS102_NBOX_DVBT_DONGLE_NAME, AS102_SKY_IT_DIGITAL_KEY_NAME, NULL /* Terminating entry */ }; /* eLNA configuration: devices built on the reference design work best with 0xA0, while custom designs seem to require 0xC0 */ static uint8_t const as102_elna_cfg[] = { 0xA0, 0xC0, 0xC0, 0xA0, 0xA0, 0x00 /* Terminating entry */ }; struct usb_driver as102_usb_driver = { .name = DRIVER_FULL_NAME, .probe = as102_usb_probe, .disconnect = as102_usb_disconnect, .id_table = as102_usb_id_table }; static const struct file_operations as102_dev_fops = { .owner = THIS_MODULE, .open = as102_open, .release = as102_release, }; static struct usb_class_driver as102_usb_class_driver = { .name = "aton2-%d", .fops = &as102_dev_fops, .minor_base = AS102_DEVICE_MAJOR, }; static int as102_usb_xfer_cmd(struct as10x_bus_adapter_t *bus_adap, unsigned char *send_buf, int send_buf_len, unsigned char *recv_buf, int recv_buf_len) { int ret = 0; if (send_buf != NULL) { ret = usb_control_msg(bus_adap->usb_dev, usb_sndctrlpipe(bus_adap->usb_dev, 0), AS102_USB_DEVICE_TX_CTRL_CMD, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, bus_adap->cmd_xid, /* value */ 0, /* index */ send_buf, send_buf_len, USB_CTRL_SET_TIMEOUT /* 200 */); if (ret < 0) { dev_dbg(&bus_adap->usb_dev->dev, "usb_control_msg(send) failed, err %i\n", ret); return ret; } if (ret != send_buf_len) { dev_dbg(&bus_adap->usb_dev->dev, "only wrote %d of %d bytes\n", ret, send_buf_len); return -1; } } if (recv_buf != NULL) { #ifdef TRACE dev_dbg(bus_adap->usb_dev->dev, "want to read: %d bytes\n", recv_buf_len); #endif ret = usb_control_msg(bus_adap->usb_dev, usb_rcvctrlpipe(bus_adap->usb_dev, 0), AS102_USB_DEVICE_RX_CTRL_CMD, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, bus_adap->cmd_xid, /* value */ 0, /* index */ recv_buf, recv_buf_len, USB_CTRL_GET_TIMEOUT /* 200 */); if (ret < 0) { dev_dbg(&bus_adap->usb_dev->dev, "usb_control_msg(recv) failed, err %i\n", ret); return ret; } #ifdef TRACE dev_dbg(bus_adap->usb_dev->dev, "read %d bytes\n", recv_buf_len); #endif } return ret; } static int as102_send_ep1(struct as10x_bus_adapter_t *bus_adap, unsigned char *send_buf, int send_buf_len, int swap32) { int ret, actual_len; ret = usb_bulk_msg(bus_adap->usb_dev, usb_sndbulkpipe(bus_adap->usb_dev, 1), send_buf, send_buf_len, &actual_len, 200); if (ret) { dev_dbg(&bus_adap->usb_dev->dev, "usb_bulk_msg(send) failed, err %i\n", ret); return ret; } if (actual_len != send_buf_len) { dev_dbg(&bus_adap->usb_dev->dev, "only wrote %d of %d bytes\n", actual_len, send_buf_len); return -1; } return actual_len; } static int as102_read_ep2(struct as10x_bus_adapter_t *bus_adap, unsigned char *recv_buf, int recv_buf_len) { int ret, actual_len; if (recv_buf == NULL) return -EINVAL; ret = usb_bulk_msg(bus_adap->usb_dev, usb_rcvbulkpipe(bus_adap->usb_dev, 2), recv_buf, recv_buf_len, &actual_len, 200); if (ret) { dev_dbg(&bus_adap->usb_dev->dev, "usb_bulk_msg(recv) failed, err %i\n", ret); return ret; } if (actual_len != recv_buf_len) { dev_dbg(&bus_adap->usb_dev->dev, "only read %d of %d bytes\n", actual_len, recv_buf_len); return -1; } return actual_len; } static const struct as102_priv_ops_t as102_priv_ops = { .upload_fw_pkt = as102_send_ep1, .xfer_cmd = as102_usb_xfer_cmd, .as102_read_ep2 = as102_read_ep2, .start_stream = as102_usb_start_stream, .stop_stream = as102_usb_stop_stream, }; static int as102_submit_urb_stream(struct as102_dev_t *dev, struct urb *urb) { int err; usb_fill_bulk_urb(urb, dev->bus_adap.usb_dev, usb_rcvbulkpipe(dev->bus_adap.usb_dev, 0x2), urb->transfer_buffer, AS102_USB_BUF_SIZE, as102_urb_stream_irq, dev); err = usb_submit_urb(urb, GFP_ATOMIC); if (err) dev_dbg(&urb->dev->dev, "%s: usb_submit_urb failed\n", __func__); return err; } void as102_urb_stream_irq(struct urb *urb) { struct as102_dev_t *as102_dev = urb->context; if (urb->actual_length > 0) { dvb_dmx_swfilter(&as102_dev->dvb_dmx, urb->transfer_buffer, urb->actual_length); } else { if (urb->actual_length == 0) memset(urb->transfer_buffer, 0, AS102_USB_BUF_SIZE); } /* is not stopped, re-submit urb */ if (as102_dev->streaming) as102_submit_urb_stream(as102_dev, urb); } static void as102_free_usb_stream_buffer(struct as102_dev_t *dev) { int i; for (i = 0; i < MAX_STREAM_URB; i++) usb_free_urb(dev->stream_urb[i]); usb_free_coherent(dev->bus_adap.usb_dev, MAX_STREAM_URB * AS102_USB_BUF_SIZE, dev->stream, dev->dma_addr); } static int as102_alloc_usb_stream_buffer(struct as102_dev_t *dev) { int i; dev->stream = usb_alloc_coherent(dev->bus_adap.usb_dev, MAX_STREAM_URB * AS102_USB_BUF_SIZE, GFP_KERNEL, &dev->dma_addr); if (!dev->stream) { dev_dbg(&dev->bus_adap.usb_dev->dev, "%s: usb_buffer_alloc failed\n", __func__); return -ENOMEM; } memset(dev->stream, 0, MAX_STREAM_URB * AS102_USB_BUF_SIZE); /* init urb buffers */ for (i = 0; i < MAX_STREAM_URB; i++) { struct urb *urb; urb = usb_alloc_urb(0, GFP_KERNEL); if (urb == NULL) { as102_free_usb_stream_buffer(dev); return -ENOMEM; } urb->transfer_buffer = dev->stream + (i * AS102_USB_BUF_SIZE); urb->transfer_dma = dev->dma_addr + (i * AS102_USB_BUF_SIZE); urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; urb->transfer_buffer_length = AS102_USB_BUF_SIZE; dev->stream_urb[i] = urb; } return 0; } static void as102_usb_stop_stream(struct as102_dev_t *dev) { int i; for (i = 0; i < MAX_STREAM_URB; i++) usb_kill_urb(dev->stream_urb[i]); } static int as102_usb_start_stream(struct as102_dev_t *dev) { int i, ret = 0; for (i = 0; i < MAX_STREAM_URB; i++) { ret = as102_submit_urb_stream(dev, dev->stream_urb[i]); if (ret) { as102_usb_stop_stream(dev); return ret; } } return 0; } static void as102_usb_release(struct kref *kref) { struct as102_dev_t *as102_dev; as102_dev = container_of(kref, struct as102_dev_t, kref); usb_put_dev(as102_dev->bus_adap.usb_dev); kfree(as102_dev); } static void as102_usb_disconnect(struct usb_interface *intf) { struct as102_dev_t *as102_dev; /* extract as102_dev_t from usb_device private data */ as102_dev = usb_get_intfdata(intf); /* unregister dvb layer */ as102_dvb_unregister(as102_dev); /* free usb buffers */ as102_free_usb_stream_buffer(as102_dev); usb_set_intfdata(intf, NULL); /* usb unregister device */ usb_deregister_dev(intf, &as102_usb_class_driver); /* decrement usage counter */ kref_put(&as102_dev->kref, as102_usb_release); pr_info("%s: device has been disconnected\n", DRIVER_NAME); } static int as102_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) { int ret; struct as102_dev_t *as102_dev; int i; /* This should never actually happen */ if (ARRAY_SIZE(as102_usb_id_table) != (sizeof(as102_device_names) / sizeof(const char *))) { pr_err("Device names table invalid size"); return -EINVAL; } as102_dev = kzalloc(sizeof(struct as102_dev_t), GFP_KERNEL); if (as102_dev == NULL) return -ENOMEM; /* Assign the user-friendly device name */ for (i = 0; i < ARRAY_SIZE(as102_usb_id_table); i++) { if (id == &as102_usb_id_table[i]) { as102_dev->name = as102_device_names[i]; as102_dev->elna_cfg = as102_elna_cfg[i]; } } if (as102_dev->name == NULL) as102_dev->name = "Unknown AS102 device"; /* set private callback functions */ as102_dev->bus_adap.ops = &as102_priv_ops; /* init cmd token for usb bus */ as102_dev->bus_adap.cmd = &as102_dev->bus_adap.token.usb.c; as102_dev->bus_adap.rsp = &as102_dev->bus_adap.token.usb.r; /* init kernel device reference */ kref_init(&as102_dev->kref); /* store as102 device to usb_device private data */ usb_set_intfdata(intf, (void *) as102_dev); /* store in as102 device the usb_device pointer */ as102_dev->bus_adap.usb_dev = usb_get_dev(interface_to_usbdev(intf)); /* we can register the device now, as it is ready */ ret = usb_register_dev(intf, &as102_usb_class_driver); if (ret < 0) { /* something prevented us from registering this driver */ dev_err(&intf->dev, "%s: usb_register_dev() failed (errno = %d)\n", __func__, ret); goto failed; } pr_info("%s: device has been detected\n", DRIVER_NAME); /* request buffer allocation for streaming */ ret = as102_alloc_usb_stream_buffer(as102_dev); if (ret != 0) goto failed_stream; /* register dvb layer */ ret = as102_dvb_register(as102_dev); if (ret != 0) goto failed_dvb; return ret; failed_dvb: as102_free_usb_stream_buffer(as102_dev); failed_stream: usb_deregister_dev(intf, &as102_usb_class_driver); failed: usb_put_dev(as102_dev->bus_adap.usb_dev); usb_set_intfdata(intf, NULL); kfree(as102_dev); return ret; } static int as102_open(struct inode *inode, struct file *file) { int ret = 0, minor = 0; struct usb_interface *intf = NULL; struct as102_dev_t *dev = NULL; /* read minor from inode */ minor = iminor(inode); /* fetch device from usb interface */ intf = usb_find_interface(&as102_usb_driver, minor); if (intf == NULL) { pr_err("%s: can't find device for minor %d\n", __func__, minor); ret = -ENODEV; goto exit; } /* get our device */ dev = usb_get_intfdata(intf); if (dev == NULL) { ret = -EFAULT; goto exit; } /* save our device object in the file's private structure */ file->private_data = dev; /* increment our usage count for the device */ kref_get(&dev->kref); exit: return ret; } static int as102_release(struct inode *inode, struct file *file) { struct as102_dev_t *dev = NULL; dev = file->private_data; if (dev != NULL) { /* decrement the count on our device */ kref_put(&dev->kref, as102_usb_release); } return 0; } MODULE_DEVICE_TABLE(usb, as102_usb_id_table); |
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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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Surface2.0/SUR40/PixelSense input driver * * Copyright (c) 2014 by Florian 'floe' Echtler <floe@butterbrot.org> * * Derived from the USB Skeleton driver 1.1, * Copyright (c) 2003 Greg Kroah-Hartman (greg@kroah.com) * * and from the Apple USB BCM5974 multitouch driver, * Copyright (c) 2008 Henrik Rydberg (rydberg@euromail.se) * * and from the generic hid-multitouch driver, * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr> * * and from the v4l2-pci-skeleton driver, * Copyright (c) Copyright 2014 Cisco Systems, Inc. */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/completion.h> #include <linux/uaccess.h> #include <linux/usb.h> #include <linux/printk.h> #include <linux/input.h> #include <linux/input/mt.h> #include <linux/usb/input.h> #include <linux/videodev2.h> #include <media/v4l2-device.h> #include <media/v4l2-dev.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-ctrls.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-dma-sg.h> /* read 512 bytes from endpoint 0x86 -> get header + blobs */ struct sur40_header { __le16 type; /* always 0x0001 */ __le16 count; /* count of blobs (if 0: continue prev. packet) */ __le32 packet_id; /* unique ID for all packets in one frame */ __le32 timestamp; /* milliseconds (inc. by 16 or 17 each frame) */ __le32 unknown; /* "epoch?" always 02/03 00 00 00 */ } __packed; struct sur40_blob { __le16 blob_id; u8 action; /* 0x02 = enter/exit, 0x03 = update (?) */ u8 type; /* bitmask (0x01 blob, 0x02 touch, 0x04 tag) */ __le16 bb_pos_x; /* upper left corner of bounding box */ __le16 bb_pos_y; __le16 bb_size_x; /* size of bounding box */ __le16 bb_size_y; __le16 pos_x; /* finger tip position */ __le16 pos_y; __le16 ctr_x; /* centroid position */ __le16 ctr_y; __le16 axis_x; /* somehow related to major/minor axis, mostly: */ __le16 axis_y; /* axis_x == bb_size_y && axis_y == bb_size_x */ __le32 angle; /* orientation in radians relative to x axis - actually an IEEE754 float, don't use in kernel */ __le32 area; /* size in pixels/pressure (?) */ u8 padding[24]; __le32 tag_id; /* valid when type == 0x04 (SUR40_TAG) */ __le32 unknown; } __packed; /* combined header/blob data */ struct sur40_data { struct sur40_header header; struct sur40_blob blobs[]; } __packed; /* read 512 bytes from endpoint 0x82 -> get header below * continue reading 16k blocks until header.size bytes read */ struct sur40_image_header { __le32 magic; /* "SUBF" */ __le32 packet_id; __le32 size; /* always 0x0007e900 = 960x540 */ __le32 timestamp; /* milliseconds (increases by 16 or 17 each frame) */ __le32 unknown; /* "epoch?" always 02/03 00 00 00 */ } __packed; /* version information */ #define DRIVER_SHORT "sur40" #define DRIVER_LONG "Samsung SUR40" #define DRIVER_AUTHOR "Florian 'floe' Echtler <floe@butterbrot.org>" #define DRIVER_DESC "Surface2.0/SUR40/PixelSense input driver" /* vendor and device IDs */ #define ID_MICROSOFT 0x045e #define ID_SUR40 0x0775 /* sensor resolution */ #define SENSOR_RES_X 1920 #define SENSOR_RES_Y 1080 /* touch data endpoint */ #define TOUCH_ENDPOINT 0x86 /* video data endpoint */ #define VIDEO_ENDPOINT 0x82 /* video header fields */ #define VIDEO_HEADER_MAGIC 0x46425553 #define VIDEO_PACKET_SIZE 16384 /* polling interval (ms) */ #define POLL_INTERVAL 1 /* maximum number of contacts FIXME: this is a guess? */ #define MAX_CONTACTS 64 /* control commands */ #define SUR40_GET_VERSION 0xb0 /* 12 bytes string */ #define SUR40_ACCEL_CAPS 0xb3 /* 5 bytes */ #define SUR40_SENSOR_CAPS 0xc1 /* 24 bytes */ #define SUR40_POKE 0xc5 /* poke register byte */ #define SUR40_PEEK 0xc4 /* 48 bytes registers */ #define SUR40_GET_STATE 0xc5 /* 4 bytes state (?) */ #define SUR40_GET_SENSORS 0xb1 /* 8 bytes sensors */ #define SUR40_BLOB 0x01 #define SUR40_TOUCH 0x02 #define SUR40_TAG 0x04 /* video controls */ #define SUR40_BRIGHTNESS_MAX 0xff #define SUR40_BRIGHTNESS_MIN 0x00 #define SUR40_BRIGHTNESS_DEF 0xff #define SUR40_CONTRAST_MAX 0x0f #define SUR40_CONTRAST_MIN 0x00 #define SUR40_CONTRAST_DEF 0x0a #define SUR40_GAIN_MAX 0x09 #define SUR40_GAIN_MIN 0x00 #define SUR40_GAIN_DEF 0x08 #define SUR40_BACKLIGHT_MAX 0x01 #define SUR40_BACKLIGHT_MIN 0x00 #define SUR40_BACKLIGHT_DEF 0x01 #define sur40_str(s) #s #define SUR40_PARAM_RANGE(lo, hi) " (range " sur40_str(lo) "-" sur40_str(hi) ")" /* module parameters */ static uint brightness = SUR40_BRIGHTNESS_DEF; module_param(brightness, uint, 0644); MODULE_PARM_DESC(brightness, "set initial brightness" SUR40_PARAM_RANGE(SUR40_BRIGHTNESS_MIN, SUR40_BRIGHTNESS_MAX)); static uint contrast = SUR40_CONTRAST_DEF; module_param(contrast, uint, 0644); MODULE_PARM_DESC(contrast, "set initial contrast" SUR40_PARAM_RANGE(SUR40_CONTRAST_MIN, SUR40_CONTRAST_MAX)); static uint gain = SUR40_GAIN_DEF; module_param(gain, uint, 0644); MODULE_PARM_DESC(gain, "set initial gain" SUR40_PARAM_RANGE(SUR40_GAIN_MIN, SUR40_GAIN_MAX)); static const struct v4l2_pix_format sur40_pix_format[] = { { .pixelformat = V4L2_TCH_FMT_TU08, .width = SENSOR_RES_X / 2, .height = SENSOR_RES_Y / 2, .field = V4L2_FIELD_NONE, .colorspace = V4L2_COLORSPACE_RAW, .bytesperline = SENSOR_RES_X / 2, .sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2), }, { .pixelformat = V4L2_PIX_FMT_GREY, .width = SENSOR_RES_X / 2, .height = SENSOR_RES_Y / 2, .field = V4L2_FIELD_NONE, .colorspace = V4L2_COLORSPACE_RAW, .bytesperline = SENSOR_RES_X / 2, .sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2), } }; /* master device state */ struct sur40_state { struct usb_device *usbdev; struct device *dev; struct input_dev *input; struct v4l2_device v4l2; struct video_device vdev; struct mutex lock; struct v4l2_pix_format pix_fmt; struct v4l2_ctrl_handler hdl; struct vb2_queue queue; struct list_head buf_list; spinlock_t qlock; int sequence; struct sur40_data *bulk_in_buffer; size_t bulk_in_size; u8 bulk_in_epaddr; u8 vsvideo; char phys[64]; }; struct sur40_buffer { struct vb2_v4l2_buffer vb; struct list_head list; }; /* forward declarations */ static const struct video_device sur40_video_device; static const struct vb2_queue sur40_queue; static void sur40_process_video(struct sur40_state *sur40); static int sur40_s_ctrl(struct v4l2_ctrl *ctrl); static const struct v4l2_ctrl_ops sur40_ctrl_ops = { .s_ctrl = sur40_s_ctrl, }; /* * Note: an earlier, non-public version of this driver used USB_RECIP_ENDPOINT * here by mistake which is very likely to have corrupted the firmware EEPROM * on two separate SUR40 devices. Thanks to Alan Stern who spotted this bug. * Should you ever run into a similar problem, the background story to this * incident and instructions on how to fix the corrupted EEPROM are available * at https://floe.butterbrot.org/matrix/hacking/surface/brick.html */ /* command wrapper */ static int sur40_command(struct sur40_state *dev, u8 command, u16 index, void *buffer, u16 size) { return usb_control_msg(dev->usbdev, usb_rcvctrlpipe(dev->usbdev, 0), command, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 0x00, index, buffer, size, 1000); } /* poke a byte in the panel register space */ static int sur40_poke(struct sur40_state *dev, u8 offset, u8 value) { int result; u8 index = 0x96; // 0xae for permanent write result = usb_control_msg(dev->usbdev, usb_sndctrlpipe(dev->usbdev, 0), SUR40_POKE, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 0x32, index, NULL, 0, 1000); if (result < 0) goto error; msleep(5); result = usb_control_msg(dev->usbdev, usb_sndctrlpipe(dev->usbdev, 0), SUR40_POKE, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 0x72, offset, NULL, 0, 1000); if (result < 0) goto error; msleep(5); result = usb_control_msg(dev->usbdev, usb_sndctrlpipe(dev->usbdev, 0), SUR40_POKE, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 0xb2, value, NULL, 0, 1000); if (result < 0) goto error; msleep(5); error: return result; } static int sur40_set_preprocessor(struct sur40_state *dev, u8 value) { u8 setting_07[2] = { 0x01, 0x00 }; u8 setting_17[2] = { 0x85, 0x80 }; int result; if (value > 1) return -ERANGE; result = usb_control_msg(dev->usbdev, usb_sndctrlpipe(dev->usbdev, 0), SUR40_POKE, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 0x07, setting_07[value], NULL, 0, 1000); if (result < 0) goto error; msleep(5); result = usb_control_msg(dev->usbdev, usb_sndctrlpipe(dev->usbdev, 0), SUR40_POKE, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 0x17, setting_17[value], NULL, 0, 1000); if (result < 0) goto error; msleep(5); error: return result; } static void sur40_set_vsvideo(struct sur40_state *handle, u8 value) { int i; for (i = 0; i < 4; i++) sur40_poke(handle, 0x1c+i, value); handle->vsvideo = value; } static void sur40_set_irlevel(struct sur40_state *handle, u8 value) { int i; for (i = 0; i < 8; i++) sur40_poke(handle, 0x08+(2*i), value); } /* Initialization routine, called from sur40_open */ static int sur40_init(struct sur40_state *dev) { int result; u8 *buffer; buffer = kmalloc(24, GFP_KERNEL); if (!buffer) { result = -ENOMEM; goto error; } /* stupidly replay the original MS driver init sequence */ result = sur40_command(dev, SUR40_GET_VERSION, 0x00, buffer, 12); if (result < 0) goto error; result = sur40_command(dev, SUR40_GET_VERSION, 0x01, buffer, 12); if (result < 0) goto error; result = sur40_command(dev, SUR40_GET_VERSION, 0x02, buffer, 12); if (result < 0) goto error; result = sur40_command(dev, SUR40_SENSOR_CAPS, 0x00, buffer, 24); if (result < 0) goto error; result = sur40_command(dev, SUR40_ACCEL_CAPS, 0x00, buffer, 5); if (result < 0) goto error; result = sur40_command(dev, SUR40_GET_VERSION, 0x03, buffer, 12); if (result < 0) goto error; result = 0; /* * Discard the result buffer - no known data inside except * some version strings, maybe extract these sometime... */ error: kfree(buffer); return result; } /* * Callback routines from input_dev */ /* Enable the device, polling will now start. */ static int sur40_open(struct input_dev *input) { struct sur40_state *sur40 = input_get_drvdata(input); dev_dbg(sur40->dev, "open\n"); return sur40_init(sur40); } /* Disable device, polling has stopped. */ static void sur40_close(struct input_dev *input) { struct sur40_state *sur40 = input_get_drvdata(input); dev_dbg(sur40->dev, "close\n"); /* * There is no known way to stop the device, so we simply * stop polling. */ } /* * This function is called when a whole contact has been processed, * so that it can assign it to a slot and store the data there. */ static void sur40_report_blob(struct sur40_blob *blob, struct input_dev *input) { int wide, major, minor; int bb_size_x, bb_size_y, pos_x, pos_y, ctr_x, ctr_y, slotnum; if (blob->type != SUR40_TOUCH) return; slotnum = input_mt_get_slot_by_key(input, le16_to_cpu(blob->blob_id)); if (slotnum < 0 || slotnum >= MAX_CONTACTS) return; bb_size_x = le16_to_cpu(blob->bb_size_x); bb_size_y = le16_to_cpu(blob->bb_size_y); pos_x = le16_to_cpu(blob->pos_x); pos_y = le16_to_cpu(blob->pos_y); ctr_x = le16_to_cpu(blob->ctr_x); ctr_y = le16_to_cpu(blob->ctr_y); input_mt_slot(input, slotnum); input_mt_report_slot_state(input, MT_TOOL_FINGER, 1); wide = (bb_size_x > bb_size_y); major = max(bb_size_x, bb_size_y); minor = min(bb_size_x, bb_size_y); input_report_abs(input, ABS_MT_POSITION_X, pos_x); input_report_abs(input, ABS_MT_POSITION_Y, pos_y); input_report_abs(input, ABS_MT_TOOL_X, ctr_x); input_report_abs(input, ABS_MT_TOOL_Y, ctr_y); /* TODO: use a better orientation measure */ input_report_abs(input, ABS_MT_ORIENTATION, wide); input_report_abs(input, ABS_MT_TOUCH_MAJOR, major); input_report_abs(input, ABS_MT_TOUCH_MINOR, minor); } /* core function: poll for new input data */ static void sur40_poll(struct input_dev *input) { struct sur40_state *sur40 = input_get_drvdata(input); int result, bulk_read, need_blobs, packet_blobs, i; struct sur40_header *header = &sur40->bulk_in_buffer->header; struct sur40_blob *inblob = &sur40->bulk_in_buffer->blobs[0]; dev_dbg(sur40->dev, "poll\n"); need_blobs = -1; do { /* perform a blocking bulk read to get data from the device */ result = usb_bulk_msg(sur40->usbdev, usb_rcvbulkpipe(sur40->usbdev, sur40->bulk_in_epaddr), sur40->bulk_in_buffer, sur40->bulk_in_size, &bulk_read, 1000); dev_dbg(sur40->dev, "received %d bytes\n", bulk_read); if (result < 0) { dev_err(sur40->dev, "error in usb_bulk_read\n"); return; } result = bulk_read - sizeof(struct sur40_header); if (result % sizeof(struct sur40_blob) != 0) { dev_err(sur40->dev, "transfer size mismatch\n"); return; } /* first packet? */ if (need_blobs == -1) { need_blobs = le16_to_cpu(header->count); dev_dbg(sur40->dev, "need %d blobs\n", need_blobs); /* packet_id = le32_to_cpu(header->packet_id); */ } /* * Sanity check. when video data is also being retrieved, the * packet ID will usually increase in the middle of a series * instead of at the end. However, the data is still consistent, * so the packet ID is probably just valid for the first packet * in a series. if (packet_id != le32_to_cpu(header->packet_id)) dev_dbg(sur40->dev, "packet ID mismatch\n"); */ packet_blobs = result / sizeof(struct sur40_blob); dev_dbg(sur40->dev, "received %d blobs\n", packet_blobs); /* packets always contain at least 4 blobs, even if empty */ if (packet_blobs > need_blobs) packet_blobs = need_blobs; for (i = 0; i < packet_blobs; i++) { need_blobs--; dev_dbg(sur40->dev, "processing blob\n"); sur40_report_blob(&(inblob[i]), input); } } while (need_blobs > 0); input_mt_sync_frame(input); input_sync(input); sur40_process_video(sur40); } /* deal with video data */ static void sur40_process_video(struct sur40_state *sur40) { struct sur40_image_header *img = (void *)(sur40->bulk_in_buffer); struct sur40_buffer *new_buf; struct usb_sg_request sgr; struct sg_table *sgt; int result, bulk_read; if (!vb2_start_streaming_called(&sur40->queue)) return; /* get a new buffer from the list */ spin_lock(&sur40->qlock); if (list_empty(&sur40->buf_list)) { dev_dbg(sur40->dev, "buffer queue empty\n"); spin_unlock(&sur40->qlock); return; } new_buf = list_entry(sur40->buf_list.next, struct sur40_buffer, list); list_del(&new_buf->list); spin_unlock(&sur40->qlock); dev_dbg(sur40->dev, "buffer acquired\n"); /* retrieve data via bulk read */ result = usb_bulk_msg(sur40->usbdev, usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT), sur40->bulk_in_buffer, sur40->bulk_in_size, &bulk_read, 1000); if (result < 0) { dev_err(sur40->dev, "error in usb_bulk_read\n"); goto err_poll; } if (bulk_read != sizeof(struct sur40_image_header)) { dev_err(sur40->dev, "received %d bytes (%zd expected)\n", bulk_read, sizeof(struct sur40_image_header)); goto err_poll; } if (le32_to_cpu(img->magic) != VIDEO_HEADER_MAGIC) { dev_err(sur40->dev, "image magic mismatch\n"); goto err_poll; } if (le32_to_cpu(img->size) != sur40->pix_fmt.sizeimage) { dev_err(sur40->dev, "image size mismatch\n"); goto err_poll; } dev_dbg(sur40->dev, "header acquired\n"); sgt = vb2_dma_sg_plane_desc(&new_buf->vb.vb2_buf, 0); result = usb_sg_init(&sgr, sur40->usbdev, usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT), 0, sgt->sgl, sgt->nents, sur40->pix_fmt.sizeimage, 0); if (result < 0) { dev_err(sur40->dev, "error %d in usb_sg_init\n", result); goto err_poll; } usb_sg_wait(&sgr); if (sgr.status < 0) { dev_err(sur40->dev, "error %d in usb_sg_wait\n", sgr.status); goto err_poll; } dev_dbg(sur40->dev, "image acquired\n"); /* return error if streaming was stopped in the meantime */ if (sur40->sequence == -1) return; /* mark as finished */ new_buf->vb.vb2_buf.timestamp = ktime_get_ns(); new_buf->vb.sequence = sur40->sequence++; new_buf->vb.field = V4L2_FIELD_NONE; vb2_buffer_done(&new_buf->vb.vb2_buf, VB2_BUF_STATE_DONE); dev_dbg(sur40->dev, "buffer marked done\n"); return; err_poll: vb2_buffer_done(&new_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); } /* Initialize input device parameters. */ static int sur40_input_setup_events(struct input_dev *input_dev) { int error; input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, SENSOR_RES_X, 0, 0); input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, SENSOR_RES_Y, 0, 0); input_set_abs_params(input_dev, ABS_MT_TOOL_X, 0, SENSOR_RES_X, 0, 0); input_set_abs_params(input_dev, ABS_MT_TOOL_Y, 0, SENSOR_RES_Y, 0, 0); /* max value unknown, but major/minor axis * can never be larger than screen */ input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, SENSOR_RES_X, 0, 0); input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, 0, SENSOR_RES_Y, 0, 0); input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0); error = input_mt_init_slots(input_dev, MAX_CONTACTS, INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); if (error) { dev_err(input_dev->dev.parent, "failed to set up slots\n"); return error; } return 0; } /* Check candidate USB interface. */ static int sur40_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_device *usbdev = interface_to_usbdev(interface); struct sur40_state *sur40; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; struct input_dev *input; int error; /* Check if we really have the right interface. */ iface_desc = interface->cur_altsetting; if (iface_desc->desc.bInterfaceClass != 0xFF) return -ENODEV; if (iface_desc->desc.bNumEndpoints < 5) return -ENODEV; /* Use endpoint #4 (0x86). */ endpoint = &iface_desc->endpoint[4].desc; if (endpoint->bEndpointAddress != TOUCH_ENDPOINT) return -ENODEV; /* Allocate memory for our device state and initialize it. */ sur40 = kzalloc(sizeof(*sur40), GFP_KERNEL); if (!sur40) return -ENOMEM; input = input_allocate_device(); if (!input) { error = -ENOMEM; goto err_free_dev; } /* initialize locks/lists */ INIT_LIST_HEAD(&sur40->buf_list); spin_lock_init(&sur40->qlock); mutex_init(&sur40->lock); /* Set up regular input device structure */ input->name = DRIVER_LONG; usb_to_input_id(usbdev, &input->id); usb_make_path(usbdev, sur40->phys, sizeof(sur40->phys)); strlcat(sur40->phys, "/input0", sizeof(sur40->phys)); input->phys = sur40->phys; input->dev.parent = &interface->dev; input->open = sur40_open; input->close = sur40_close; error = sur40_input_setup_events(input); if (error) goto err_free_input; input_set_drvdata(input, sur40); error = input_setup_polling(input, sur40_poll); if (error) { dev_err(&interface->dev, "failed to set up polling"); goto err_free_input; } input_set_poll_interval(input, POLL_INTERVAL); sur40->usbdev = usbdev; sur40->dev = &interface->dev; sur40->input = input; /* use the bulk-in endpoint tested above */ sur40->bulk_in_size = usb_endpoint_maxp(endpoint); sur40->bulk_in_epaddr = endpoint->bEndpointAddress; sur40->bulk_in_buffer = kmalloc(sur40->bulk_in_size, GFP_KERNEL); if (!sur40->bulk_in_buffer) { dev_err(&interface->dev, "Unable to allocate input buffer."); error = -ENOMEM; goto err_free_input; } /* register the polled input device */ error = input_register_device(input); if (error) { dev_err(&interface->dev, "Unable to register polled input device."); goto err_free_buffer; } /* register the video master device */ snprintf(sur40->v4l2.name, sizeof(sur40->v4l2.name), "%s", DRIVER_LONG); error = v4l2_device_register(sur40->dev, &sur40->v4l2); if (error) { dev_err(&interface->dev, "Unable to register video master device."); goto err_unreg_v4l2; } /* initialize the lock and subdevice */ sur40->queue = sur40_queue; sur40->queue.drv_priv = sur40; sur40->queue.lock = &sur40->lock; sur40->queue.dev = sur40->dev; /* initialize the queue */ error = vb2_queue_init(&sur40->queue); if (error) goto err_unreg_v4l2; sur40->pix_fmt = sur40_pix_format[0]; sur40->vdev = sur40_video_device; sur40->vdev.v4l2_dev = &sur40->v4l2; sur40->vdev.lock = &sur40->lock; sur40->vdev.queue = &sur40->queue; video_set_drvdata(&sur40->vdev, sur40); /* initialize the control handler for 4 controls */ v4l2_ctrl_handler_init(&sur40->hdl, 4); sur40->v4l2.ctrl_handler = &sur40->hdl; sur40->vsvideo = (SUR40_CONTRAST_DEF << 4) | SUR40_GAIN_DEF; v4l2_ctrl_new_std(&sur40->hdl, &sur40_ctrl_ops, V4L2_CID_BRIGHTNESS, SUR40_BRIGHTNESS_MIN, SUR40_BRIGHTNESS_MAX, 1, clamp(brightness, (uint)SUR40_BRIGHTNESS_MIN, (uint)SUR40_BRIGHTNESS_MAX)); v4l2_ctrl_new_std(&sur40->hdl, &sur40_ctrl_ops, V4L2_CID_CONTRAST, SUR40_CONTRAST_MIN, SUR40_CONTRAST_MAX, 1, clamp(contrast, (uint)SUR40_CONTRAST_MIN, (uint)SUR40_CONTRAST_MAX)); v4l2_ctrl_new_std(&sur40->hdl, &sur40_ctrl_ops, V4L2_CID_GAIN, SUR40_GAIN_MIN, SUR40_GAIN_MAX, 1, clamp(gain, (uint)SUR40_GAIN_MIN, (uint)SUR40_GAIN_MAX)); v4l2_ctrl_new_std(&sur40->hdl, &sur40_ctrl_ops, V4L2_CID_BACKLIGHT_COMPENSATION, SUR40_BACKLIGHT_MIN, SUR40_BACKLIGHT_MAX, 1, SUR40_BACKLIGHT_DEF); v4l2_ctrl_handler_setup(&sur40->hdl); if (sur40->hdl.error) { dev_err(&interface->dev, "Unable to register video controls."); v4l2_ctrl_handler_free(&sur40->hdl); error = sur40->hdl.error; goto err_unreg_v4l2; } error = video_register_device(&sur40->vdev, VFL_TYPE_TOUCH, -1); if (error) { dev_err(&interface->dev, "Unable to register video subdevice."); goto err_unreg_video; } /* we can register the device now, as it is ready */ usb_set_intfdata(interface, sur40); dev_dbg(&interface->dev, "%s is now attached\n", DRIVER_DESC); return 0; err_unreg_video: video_unregister_device(&sur40->vdev); err_unreg_v4l2: v4l2_device_unregister(&sur40->v4l2); err_free_buffer: kfree(sur40->bulk_in_buffer); err_free_input: input_free_device(input); err_free_dev: kfree(sur40); return error; } /* Unregister device & clean up. */ static void sur40_disconnect(struct usb_interface *interface) { struct sur40_state *sur40 = usb_get_intfdata(interface); v4l2_ctrl_handler_free(&sur40->hdl); video_unregister_device(&sur40->vdev); v4l2_device_unregister(&sur40->v4l2); input_unregister_device(sur40->input); kfree(sur40->bulk_in_buffer); kfree(sur40); usb_set_intfdata(interface, NULL); dev_dbg(&interface->dev, "%s is now disconnected\n", DRIVER_DESC); } /* * Setup the constraints of the queue: besides setting the number of planes * per buffer and the size and allocation context of each plane, it also * checks if sufficient buffers have been allocated. Usually 3 is a good * minimum number: many DMA engines need a minimum of 2 buffers in the * queue and you need to have another available for userspace processing. */ static int sur40_queue_setup(struct vb2_queue *q, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct sur40_state *sur40 = vb2_get_drv_priv(q); unsigned int q_num_bufs = vb2_get_num_buffers(q); if (q_num_bufs + *nbuffers < 3) *nbuffers = 3 - q_num_bufs; if (*nplanes) return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0; *nplanes = 1; sizes[0] = sur40->pix_fmt.sizeimage; return 0; } /* * Prepare the buffer for queueing to the DMA engine: check and set the * payload size. */ static int sur40_buffer_prepare(struct vb2_buffer *vb) { struct sur40_state *sur40 = vb2_get_drv_priv(vb->vb2_queue); unsigned long size = sur40->pix_fmt.sizeimage; if (vb2_plane_size(vb, 0) < size) { dev_err(&sur40->usbdev->dev, "buffer too small (%lu < %lu)\n", vb2_plane_size(vb, 0), size); return -EINVAL; } vb2_set_plane_payload(vb, 0, size); return 0; } /* * Queue this buffer to the DMA engine. */ static void sur40_buffer_queue(struct vb2_buffer *vb) { struct sur40_state *sur40 = vb2_get_drv_priv(vb->vb2_queue); struct sur40_buffer *buf = (struct sur40_buffer *)vb; spin_lock(&sur40->qlock); list_add_tail(&buf->list, &sur40->buf_list); spin_unlock(&sur40->qlock); } static void return_all_buffers(struct sur40_state *sur40, enum vb2_buffer_state state) { struct sur40_buffer *buf, *node; spin_lock(&sur40->qlock); list_for_each_entry_safe(buf, node, &sur40->buf_list, list) { vb2_buffer_done(&buf->vb.vb2_buf, state); list_del(&buf->list); } spin_unlock(&sur40->qlock); } /* * Start streaming. First check if the minimum number of buffers have been * queued. If not, then return -ENOBUFS and the vb2 framework will call * this function again the next time a buffer has been queued until enough * buffers are available to actually start the DMA engine. */ static int sur40_start_streaming(struct vb2_queue *vq, unsigned int count) { struct sur40_state *sur40 = vb2_get_drv_priv(vq); sur40->sequence = 0; return 0; } /* * Stop the DMA engine. Any remaining buffers in the DMA queue are dequeued * and passed on to the vb2 framework marked as STATE_ERROR. */ static void sur40_stop_streaming(struct vb2_queue *vq) { struct sur40_state *sur40 = vb2_get_drv_priv(vq); vb2_wait_for_all_buffers(vq); sur40->sequence = -1; /* Release all active buffers */ return_all_buffers(sur40, VB2_BUF_STATE_ERROR); } /* V4L ioctl */ static int sur40_vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct sur40_state *sur40 = video_drvdata(file); strscpy(cap->driver, DRIVER_SHORT, sizeof(cap->driver)); strscpy(cap->card, DRIVER_LONG, sizeof(cap->card)); usb_make_path(sur40->usbdev, cap->bus_info, sizeof(cap->bus_info)); return 0; } static int sur40_vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) { if (i->index != 0) return -EINVAL; i->type = V4L2_INPUT_TYPE_TOUCH; i->std = V4L2_STD_UNKNOWN; strscpy(i->name, "In-Cell Sensor", sizeof(i->name)); i->capabilities = 0; return 0; } static int sur40_vidioc_s_input(struct file *file, void *priv, unsigned int i) { return (i == 0) ? 0 : -EINVAL; } static int sur40_vidioc_g_input(struct file *file, void *priv, unsigned int *i) { *i = 0; return 0; } static int sur40_vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) { switch (f->fmt.pix.pixelformat) { case V4L2_PIX_FMT_GREY: f->fmt.pix = sur40_pix_format[1]; break; default: f->fmt.pix = sur40_pix_format[0]; break; } return 0; } static int sur40_vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct sur40_state *sur40 = video_drvdata(file); switch (f->fmt.pix.pixelformat) { case V4L2_PIX_FMT_GREY: sur40->pix_fmt = sur40_pix_format[1]; break; default: sur40->pix_fmt = sur40_pix_format[0]; break; } f->fmt.pix = sur40->pix_fmt; return 0; } static int sur40_vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct sur40_state *sur40 = video_drvdata(file); f->fmt.pix = sur40->pix_fmt; return 0; } static int sur40_s_ctrl(struct v4l2_ctrl *ctrl) { struct sur40_state *sur40 = container_of(ctrl->handler, struct sur40_state, hdl); u8 value = sur40->vsvideo; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: sur40_set_irlevel(sur40, ctrl->val); break; case V4L2_CID_CONTRAST: value = (value & 0x0f) | (ctrl->val << 4); sur40_set_vsvideo(sur40, value); break; case V4L2_CID_GAIN: value = (value & 0xf0) | (ctrl->val); sur40_set_vsvideo(sur40, value); break; case V4L2_CID_BACKLIGHT_COMPENSATION: sur40_set_preprocessor(sur40, ctrl->val); break; } return 0; } static int sur40_ioctl_parm(struct file *file, void *priv, struct v4l2_streamparm *p) { if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; p->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; p->parm.capture.timeperframe.numerator = 1; p->parm.capture.timeperframe.denominator = 60; p->parm.capture.readbuffers = 3; return 0; } static int sur40_vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (f->index >= ARRAY_SIZE(sur40_pix_format)) return -EINVAL; f->pixelformat = sur40_pix_format[f->index].pixelformat; f->flags = 0; return 0; } static int sur40_vidioc_enum_framesizes(struct file *file, void *priv, struct v4l2_frmsizeenum *f) { struct sur40_state *sur40 = video_drvdata(file); if ((f->index != 0) || ((f->pixel_format != V4L2_TCH_FMT_TU08) && (f->pixel_format != V4L2_PIX_FMT_GREY))) return -EINVAL; f->type = V4L2_FRMSIZE_TYPE_DISCRETE; f->discrete.width = sur40->pix_fmt.width; f->discrete.height = sur40->pix_fmt.height; return 0; } static int sur40_vidioc_enum_frameintervals(struct file *file, void *priv, struct v4l2_frmivalenum *f) { struct sur40_state *sur40 = video_drvdata(file); if ((f->index > 0) || ((f->pixel_format != V4L2_TCH_FMT_TU08) && (f->pixel_format != V4L2_PIX_FMT_GREY)) || (f->width != sur40->pix_fmt.width) || (f->height != sur40->pix_fmt.height)) return -EINVAL; f->type = V4L2_FRMIVAL_TYPE_DISCRETE; f->discrete.denominator = 60; f->discrete.numerator = 1; return 0; } static const struct usb_device_id sur40_table[] = { { USB_DEVICE(ID_MICROSOFT, ID_SUR40) }, /* Samsung SUR40 */ { } /* terminating null entry */ }; MODULE_DEVICE_TABLE(usb, sur40_table); /* V4L2 structures */ static const struct vb2_ops sur40_queue_ops = { .queue_setup = sur40_queue_setup, .buf_prepare = sur40_buffer_prepare, .buf_queue = sur40_buffer_queue, .start_streaming = sur40_start_streaming, .stop_streaming = sur40_stop_streaming, }; static const struct vb2_queue sur40_queue = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, /* * VB2_USERPTR in currently not enabled: passing a user pointer to * dma-sg will result in segment sizes that are not a multiple of * 512 bytes, which is required by the host controller. */ .io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF, .buf_struct_size = sizeof(struct sur40_buffer), .ops = &sur40_queue_ops, .mem_ops = &vb2_dma_sg_memops, .timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, .min_queued_buffers = 3, }; static const struct v4l2_file_operations sur40_video_fops = { .owner = THIS_MODULE, .open = v4l2_fh_open, .release = vb2_fop_release, .unlocked_ioctl = video_ioctl2, .read = vb2_fop_read, .mmap = vb2_fop_mmap, .poll = vb2_fop_poll, }; static const struct v4l2_ioctl_ops sur40_video_ioctl_ops = { .vidioc_querycap = sur40_vidioc_querycap, .vidioc_enum_fmt_vid_cap = sur40_vidioc_enum_fmt, .vidioc_try_fmt_vid_cap = sur40_vidioc_try_fmt, .vidioc_s_fmt_vid_cap = sur40_vidioc_s_fmt, .vidioc_g_fmt_vid_cap = sur40_vidioc_g_fmt, .vidioc_enum_framesizes = sur40_vidioc_enum_framesizes, .vidioc_enum_frameintervals = sur40_vidioc_enum_frameintervals, .vidioc_g_parm = sur40_ioctl_parm, .vidioc_s_parm = sur40_ioctl_parm, .vidioc_enum_input = sur40_vidioc_enum_input, .vidioc_g_input = sur40_vidioc_g_input, .vidioc_s_input = sur40_vidioc_s_input, .vidioc_reqbufs = vb2_ioctl_reqbufs, .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_querybuf = vb2_ioctl_querybuf, .vidioc_qbuf = vb2_ioctl_qbuf, .vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_expbuf = vb2_ioctl_expbuf, .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, }; static const struct video_device sur40_video_device = { .name = DRIVER_LONG, .fops = &sur40_video_fops, .ioctl_ops = &sur40_video_ioctl_ops, .release = video_device_release_empty, .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, }; /* USB-specific object needed to register this driver with the USB subsystem. */ static struct usb_driver sur40_driver = { .name = DRIVER_SHORT, .probe = sur40_probe, .disconnect = sur40_disconnect, .id_table = sur40_table, }; module_usb_driver(sur40_driver); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); |
| 3 3 3 3 3 3 3 3 3 3 3 4 4 4 1 3 3 3 3 3 3 4 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 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 | // SPDX-License-Identifier: GPL-2.0 /* * Greybus Host Device * * Copyright 2014-2015 Google Inc. * Copyright 2014-2015 Linaro Ltd. */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/greybus.h> #include "greybus_trace.h" EXPORT_TRACEPOINT_SYMBOL_GPL(gb_hd_create); EXPORT_TRACEPOINT_SYMBOL_GPL(gb_hd_release); EXPORT_TRACEPOINT_SYMBOL_GPL(gb_hd_add); EXPORT_TRACEPOINT_SYMBOL_GPL(gb_hd_del); EXPORT_TRACEPOINT_SYMBOL_GPL(gb_hd_in); EXPORT_TRACEPOINT_SYMBOL_GPL(gb_message_submit); static struct ida gb_hd_bus_id_map; int gb_hd_output(struct gb_host_device *hd, void *req, u16 size, u8 cmd, bool async) { if (!hd || !hd->driver || !hd->driver->output) return -EINVAL; return hd->driver->output(hd, req, size, cmd, async); } EXPORT_SYMBOL_GPL(gb_hd_output); static ssize_t bus_id_show(struct device *dev, struct device_attribute *attr, char *buf) { struct gb_host_device *hd = to_gb_host_device(dev); return sprintf(buf, "%d\n", hd->bus_id); } static DEVICE_ATTR_RO(bus_id); static struct attribute *bus_attrs[] = { &dev_attr_bus_id.attr, NULL }; ATTRIBUTE_GROUPS(bus); int gb_hd_cport_reserve(struct gb_host_device *hd, u16 cport_id) { struct ida *id_map = &hd->cport_id_map; int ret; ret = ida_alloc_range(id_map, cport_id, cport_id, GFP_KERNEL); if (ret < 0) { dev_err(&hd->dev, "failed to reserve cport %u\n", cport_id); return ret; } return 0; } EXPORT_SYMBOL_GPL(gb_hd_cport_reserve); void gb_hd_cport_release_reserved(struct gb_host_device *hd, u16 cport_id) { struct ida *id_map = &hd->cport_id_map; ida_free(id_map, cport_id); } EXPORT_SYMBOL_GPL(gb_hd_cport_release_reserved); /* Locking: Caller guarantees serialisation */ int gb_hd_cport_allocate(struct gb_host_device *hd, int cport_id, unsigned long flags) { struct ida *id_map = &hd->cport_id_map; int ida_start, ida_end; if (hd->driver->cport_allocate) return hd->driver->cport_allocate(hd, cport_id, flags); if (cport_id < 0) { ida_start = 0; ida_end = hd->num_cports - 1; } else if (cport_id < hd->num_cports) { ida_start = cport_id; ida_end = cport_id; } else { dev_err(&hd->dev, "cport %d not available\n", cport_id); return -EINVAL; } return ida_alloc_range(id_map, ida_start, ida_end, GFP_KERNEL); } /* Locking: Caller guarantees serialisation */ void gb_hd_cport_release(struct gb_host_device *hd, u16 cport_id) { if (hd->driver->cport_release) { hd->driver->cport_release(hd, cport_id); return; } ida_free(&hd->cport_id_map, cport_id); } static void gb_hd_release(struct device *dev) { struct gb_host_device *hd = to_gb_host_device(dev); trace_gb_hd_release(hd); if (hd->svc) gb_svc_put(hd->svc); ida_free(&gb_hd_bus_id_map, hd->bus_id); ida_destroy(&hd->cport_id_map); kfree(hd); } const struct device_type greybus_hd_type = { .name = "greybus_host_device", .release = gb_hd_release, }; struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver, struct device *parent, size_t buffer_size_max, size_t num_cports) { struct gb_host_device *hd; int ret; /* * Validate that the driver implements all of the callbacks * so that we don't have to every time we make them. */ if ((!driver->message_send) || (!driver->message_cancel)) { dev_err(parent, "mandatory hd-callbacks missing\n"); return ERR_PTR(-EINVAL); } if (buffer_size_max < GB_OPERATION_MESSAGE_SIZE_MIN) { dev_err(parent, "greybus host-device buffers too small\n"); return ERR_PTR(-EINVAL); } if (num_cports == 0 || num_cports > CPORT_ID_MAX + 1) { dev_err(parent, "Invalid number of CPorts: %zu\n", num_cports); return ERR_PTR(-EINVAL); } /* * Make sure to never allocate messages larger than what the Greybus * protocol supports. */ if (buffer_size_max > GB_OPERATION_MESSAGE_SIZE_MAX) { dev_warn(parent, "limiting buffer size to %u\n", GB_OPERATION_MESSAGE_SIZE_MAX); buffer_size_max = GB_OPERATION_MESSAGE_SIZE_MAX; } hd = kzalloc(sizeof(*hd) + driver->hd_priv_size, GFP_KERNEL); if (!hd) return ERR_PTR(-ENOMEM); ret = ida_alloc_min(&gb_hd_bus_id_map, 1, GFP_KERNEL); if (ret < 0) { kfree(hd); return ERR_PTR(ret); } hd->bus_id = ret; hd->driver = driver; INIT_LIST_HEAD(&hd->modules); INIT_LIST_HEAD(&hd->connections); ida_init(&hd->cport_id_map); hd->buffer_size_max = buffer_size_max; hd->num_cports = num_cports; hd->dev.parent = parent; hd->dev.bus = &greybus_bus_type; hd->dev.type = &greybus_hd_type; hd->dev.groups = bus_groups; hd->dev.dma_mask = hd->dev.parent->dma_mask; device_initialize(&hd->dev); dev_set_name(&hd->dev, "greybus%d", hd->bus_id); trace_gb_hd_create(hd); hd->svc = gb_svc_create(hd); if (!hd->svc) { dev_err(&hd->dev, "failed to create svc\n"); put_device(&hd->dev); return ERR_PTR(-ENOMEM); } return hd; } EXPORT_SYMBOL_GPL(gb_hd_create); int gb_hd_add(struct gb_host_device *hd) { int ret; ret = device_add(&hd->dev); if (ret) return ret; ret = gb_svc_add(hd->svc); if (ret) { device_del(&hd->dev); return ret; } trace_gb_hd_add(hd); return 0; } EXPORT_SYMBOL_GPL(gb_hd_add); void gb_hd_del(struct gb_host_device *hd) { trace_gb_hd_del(hd); /* * Tear down the svc and flush any on-going hotplug processing before * removing the remaining interfaces. */ gb_svc_del(hd->svc); device_del(&hd->dev); } EXPORT_SYMBOL_GPL(gb_hd_del); void gb_hd_shutdown(struct gb_host_device *hd) { gb_svc_del(hd->svc); } EXPORT_SYMBOL_GPL(gb_hd_shutdown); void gb_hd_put(struct gb_host_device *hd) { put_device(&hd->dev); } EXPORT_SYMBOL_GPL(gb_hd_put); int __init gb_hd_init(void) { ida_init(&gb_hd_bus_id_map); return 0; } void gb_hd_exit(void) { ida_destroy(&gb_hd_bus_id_map); } |
| 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 | // SPDX-License-Identifier: GPL-2.0 /* * linux/fs/ext4/xattr_security.c * Handler for storing security labels as extended attributes. */ #include <linux/string.h> #include <linux/fs.h> #include <linux/security.h> #include <linux/slab.h> #include "ext4_jbd2.h" #include "ext4.h" #include "xattr.h" static int ext4_xattr_security_get(const struct xattr_handler *handler, struct dentry *unused, struct inode *inode, const char *name, void *buffer, size_t size) { return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY, name, buffer, size); } static int ext4_xattr_security_set(const struct xattr_handler *handler, struct mnt_idmap *idmap, struct dentry *unused, struct inode *inode, const char *name, const void *value, size_t size, int flags) { return ext4_xattr_set(inode, EXT4_XATTR_INDEX_SECURITY, name, value, size, flags); } static int ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array, void *fs_info) { const struct xattr *xattr; handle_t *handle = fs_info; int err = 0; for (xattr = xattr_array; xattr->name != NULL; xattr++) { err = ext4_xattr_set_handle(handle, inode, EXT4_XATTR_INDEX_SECURITY, xattr->name, xattr->value, xattr->value_len, XATTR_CREATE); if (err < 0) break; } return err; } int ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir, const struct qstr *qstr) { return security_inode_init_security(inode, dir, qstr, &ext4_initxattrs, handle); } const struct xattr_handler ext4_xattr_security_handler = { .prefix = XATTR_SECURITY_PREFIX, .get = ext4_xattr_security_get, .set = ext4_xattr_security_set, }; |
| 14 14 14 14 14 19 18 19 18 19 14 14 14 14 14 19 19 18 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 | // SPDX-License-Identifier: GPL-2.0 /* * attribute_container.c - implementation of a simple container for classes * * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com> * * The basic idea here is to enable a device to be attached to an * aritrary numer of classes without having to allocate storage for them. * Instead, the contained classes select the devices they need to attach * to via a matching function. */ #include <linux/attribute_container.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/list.h> #include <linux/module.h> #include <linux/mutex.h> #include "base.h" /* This is a private structure used to tie the classdev and the * container .. it should never be visible outside this file */ struct internal_container { struct klist_node node; struct attribute_container *cont; struct device classdev; }; static void internal_container_klist_get(struct klist_node *n) { struct internal_container *ic = container_of(n, struct internal_container, node); get_device(&ic->classdev); } static void internal_container_klist_put(struct klist_node *n) { struct internal_container *ic = container_of(n, struct internal_container, node); put_device(&ic->classdev); } /** * attribute_container_classdev_to_container - given a classdev, return the container * * @classdev: the class device created by attribute_container_add_device. * * Returns the container associated with this classdev. */ struct attribute_container * attribute_container_classdev_to_container(struct device *classdev) { struct internal_container *ic = container_of(classdev, struct internal_container, classdev); return ic->cont; } EXPORT_SYMBOL_GPL(attribute_container_classdev_to_container); static LIST_HEAD(attribute_container_list); static DEFINE_MUTEX(attribute_container_mutex); /** * attribute_container_register - register an attribute container * * @cont: The container to register. This must be allocated by the * callee and should also be zeroed by it. */ int attribute_container_register(struct attribute_container *cont) { INIT_LIST_HEAD(&cont->node); klist_init(&cont->containers, internal_container_klist_get, internal_container_klist_put); mutex_lock(&attribute_container_mutex); list_add_tail(&cont->node, &attribute_container_list); mutex_unlock(&attribute_container_mutex); return 0; } EXPORT_SYMBOL_GPL(attribute_container_register); /** * attribute_container_unregister - remove a container registration * * @cont: previously registered container to remove */ int attribute_container_unregister(struct attribute_container *cont) { int retval = -EBUSY; mutex_lock(&attribute_container_mutex); spin_lock(&cont->containers.k_lock); if (!list_empty(&cont->containers.k_list)) goto out; retval = 0; list_del(&cont->node); out: spin_unlock(&cont->containers.k_lock); mutex_unlock(&attribute_container_mutex); return retval; } EXPORT_SYMBOL_GPL(attribute_container_unregister); /* private function used as class release */ static void attribute_container_release(struct device *classdev) { struct internal_container *ic = container_of(classdev, struct internal_container, classdev); struct device *dev = classdev->parent; kfree(ic); put_device(dev); } /** * attribute_container_add_device - see if any container is interested in dev * * @dev: device to add attributes to * @fn: function to trigger addition of class device. * * This function allocates storage for the class device(s) to be * attached to dev (one for each matching attribute_container). If no * fn is provided, the code will simply register the class device via * device_add. If a function is provided, it is expected to add * the class device at the appropriate time. One of the things that * might be necessary is to allocate and initialise the classdev and * then add it a later time. To do this, call this routine for * allocation and initialisation and then use * attribute_container_device_trigger() to call device_add() on * it. Note: after this, the class device contains a reference to dev * which is not relinquished until the release of the classdev. */ void attribute_container_add_device(struct device *dev, int (*fn)(struct attribute_container *, struct device *, struct device *)) { struct attribute_container *cont; mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { struct internal_container *ic; if (attribute_container_no_classdevs(cont)) continue; if (!cont->match(cont, dev)) continue; ic = kzalloc(sizeof(*ic), GFP_KERNEL); if (!ic) { dev_err(dev, "failed to allocate class container\n"); continue; } ic->cont = cont; device_initialize(&ic->classdev); ic->classdev.parent = get_device(dev); ic->classdev.class = cont->class; cont->class->dev_release = attribute_container_release; dev_set_name(&ic->classdev, "%s", dev_name(dev)); if (fn) fn(cont, dev, &ic->classdev); else attribute_container_add_class_device(&ic->classdev); klist_add_tail(&ic->node, &cont->containers); } mutex_unlock(&attribute_container_mutex); } /* FIXME: can't break out of this unless klist_iter_exit is also * called before doing the break */ #define klist_for_each_entry(pos, head, member, iter) \ for (klist_iter_init(head, iter); (pos = ({ \ struct klist_node *n = klist_next(iter); \ n ? container_of(n, typeof(*pos), member) : \ ({ klist_iter_exit(iter) ; NULL; }); \ })) != NULL;) /** * attribute_container_remove_device - make device eligible for removal. * * @dev: The generic device * @fn: A function to call to remove the device * * This routine triggers device removal. If fn is NULL, then it is * simply done via device_unregister (note that if something * still has a reference to the classdev, then the memory occupied * will not be freed until the classdev is released). If you want a * two phase release: remove from visibility and then delete the * device, then you should use this routine with a fn that calls * device_del() and then use attribute_container_device_trigger() * to do the final put on the classdev. */ void attribute_container_remove_device(struct device *dev, void (*fn)(struct attribute_container *, struct device *, struct device *)) { struct attribute_container *cont; mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { struct internal_container *ic; struct klist_iter iter; if (attribute_container_no_classdevs(cont)) continue; if (!cont->match(cont, dev)) continue; klist_for_each_entry(ic, &cont->containers, node, &iter) { if (dev != ic->classdev.parent) continue; klist_del(&ic->node); if (fn) fn(cont, dev, &ic->classdev); else { attribute_container_remove_attrs(&ic->classdev); device_unregister(&ic->classdev); } } } mutex_unlock(&attribute_container_mutex); } static int do_attribute_container_device_trigger_safe(struct device *dev, struct attribute_container *cont, int (*fn)(struct attribute_container *, struct device *, struct device *), int (*undo)(struct attribute_container *, struct device *, struct device *)) { int ret; struct internal_container *ic, *failed; struct klist_iter iter; if (attribute_container_no_classdevs(cont)) return fn(cont, dev, NULL); klist_for_each_entry(ic, &cont->containers, node, &iter) { if (dev == ic->classdev.parent) { ret = fn(cont, dev, &ic->classdev); if (ret) { failed = ic; klist_iter_exit(&iter); goto fail; } } } return 0; fail: if (!undo) return ret; /* Attempt to undo the work partially done. */ klist_for_each_entry(ic, &cont->containers, node, &iter) { if (ic == failed) { klist_iter_exit(&iter); break; } if (dev == ic->classdev.parent) undo(cont, dev, &ic->classdev); } return ret; } /** * attribute_container_device_trigger_safe - execute a trigger for each * matching classdev or fail all of them. * * @dev: The generic device to run the trigger for * @fn: the function to execute for each classdev. * @undo: A function to undo the work previously done in case of error * * This function is a safe version of * attribute_container_device_trigger. It stops on the first error and * undo the partial work that has been done, on previous classdev. It * is guaranteed that either they all succeeded, or none of them * succeeded. */ int attribute_container_device_trigger_safe(struct device *dev, int (*fn)(struct attribute_container *, struct device *, struct device *), int (*undo)(struct attribute_container *, struct device *, struct device *)) { struct attribute_container *cont, *failed = NULL; int ret = 0; mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { if (!cont->match(cont, dev)) continue; ret = do_attribute_container_device_trigger_safe(dev, cont, fn, undo); if (ret) { failed = cont; break; } } if (ret && !WARN_ON(!undo)) { list_for_each_entry(cont, &attribute_container_list, node) { if (failed == cont) break; if (!cont->match(cont, dev)) continue; do_attribute_container_device_trigger_safe(dev, cont, undo, NULL); } } mutex_unlock(&attribute_container_mutex); return ret; } /** * attribute_container_device_trigger - execute a trigger for each matching classdev * * @dev: The generic device to run the trigger for * @fn: the function to execute for each classdev. * * This function is for executing a trigger when you need to know both * the container and the classdev. */ void attribute_container_device_trigger(struct device *dev, int (*fn)(struct attribute_container *, struct device *, struct device *)) { struct attribute_container *cont; mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { struct internal_container *ic; struct klist_iter iter; if (!cont->match(cont, dev)) continue; if (attribute_container_no_classdevs(cont)) { fn(cont, dev, NULL); continue; } klist_for_each_entry(ic, &cont->containers, node, &iter) { if (dev == ic->classdev.parent) fn(cont, dev, &ic->classdev); } } mutex_unlock(&attribute_container_mutex); } /** * attribute_container_add_attrs - add attributes * * @classdev: The class device * * This simply creates all the class device sysfs files from the * attributes listed in the container */ int attribute_container_add_attrs(struct device *classdev) { struct attribute_container *cont = attribute_container_classdev_to_container(classdev); struct device_attribute **attrs = cont->attrs; int i, error; BUG_ON(attrs && cont->grp); if (!attrs && !cont->grp) return 0; if (cont->grp) return sysfs_create_group(&classdev->kobj, cont->grp); for (i = 0; attrs[i]; i++) { sysfs_attr_init(&attrs[i]->attr); error = device_create_file(classdev, attrs[i]); if (error) return error; } return 0; } /** * attribute_container_add_class_device - same function as device_add * * @classdev: the class device to add * * This performs essentially the same function as device_add except for * attribute containers, namely add the classdev to the system and then * create the attribute files */ int attribute_container_add_class_device(struct device *classdev) { int error = device_add(classdev); if (error) return error; return attribute_container_add_attrs(classdev); } /** * attribute_container_remove_attrs - remove any attribute files * * @classdev: The class device to remove the files from * */ void attribute_container_remove_attrs(struct device *classdev) { struct attribute_container *cont = attribute_container_classdev_to_container(classdev); struct device_attribute **attrs = cont->attrs; int i; if (!attrs && !cont->grp) return; if (cont->grp) { sysfs_remove_group(&classdev->kobj, cont->grp); return ; } for (i = 0; attrs[i]; i++) device_remove_file(classdev, attrs[i]); } /** * attribute_container_class_device_del - equivalent of class_device_del * * @classdev: the class device * * This function simply removes all the attribute files and then calls * device_del. */ void attribute_container_class_device_del(struct device *classdev) { attribute_container_remove_attrs(classdev); device_del(classdev); } /** * attribute_container_find_class_device - find the corresponding class_device * * @cont: the container * @dev: the generic device * * Looks up the device in the container's list of class devices and returns * the corresponding class_device. */ struct device * attribute_container_find_class_device(struct attribute_container *cont, struct device *dev) { struct device *cdev = NULL; struct internal_container *ic; struct klist_iter iter; klist_for_each_entry(ic, &cont->containers, node, &iter) { if (ic->classdev.parent == dev) { cdev = &ic->classdev; /* FIXME: must exit iterator then break */ klist_iter_exit(&iter); break; } } return cdev; } EXPORT_SYMBOL_GPL(attribute_container_find_class_device); |
| 36 36 36 36 36 36 13 13 13 13 13 13 13 13 13 13 36 36 36 36 36 36 36 3 3 3 3 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 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 | /* * hw_random/core.c: HWRNG core API * * Copyright 2006 Michael Buesch <m@bues.ch> * Copyright 2005 (c) MontaVista Software, Inc. * * Please read Documentation/admin-guide/hw_random.rst for details on use. * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. */ #include <linux/delay.h> #include <linux/device.h> #include <linux/err.h> #include <linux/fs.h> #include <linux/hw_random.h> #include <linux/kernel.h> #include <linux/kthread.h> #include <linux/miscdevice.h> #include <linux/module.h> #include <linux/random.h> #include <linux/sched.h> #include <linux/sched/signal.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/uaccess.h> #define RNG_MODULE_NAME "hw_random" #define RNG_BUFFER_SIZE (SMP_CACHE_BYTES < 32 ? 32 : SMP_CACHE_BYTES) static struct hwrng *current_rng; /* the current rng has been explicitly chosen by user via sysfs */ static int cur_rng_set_by_user; static struct task_struct *hwrng_fill; /* list of registered rngs */ static LIST_HEAD(rng_list); /* Protects rng_list and current_rng */ static DEFINE_MUTEX(rng_mutex); /* Protects rng read functions, data_avail, rng_buffer and rng_fillbuf */ static DEFINE_MUTEX(reading_mutex); static int data_avail; static u8 *rng_buffer, *rng_fillbuf; static unsigned short current_quality; static unsigned short default_quality = 1024; /* default to maximum */ module_param(current_quality, ushort, 0644); MODULE_PARM_DESC(current_quality, "current hwrng entropy estimation per 1024 bits of input -- obsolete, use rng_quality instead"); module_param(default_quality, ushort, 0644); MODULE_PARM_DESC(default_quality, "default maximum entropy content of hwrng per 1024 bits of input"); static void drop_current_rng(void); static int hwrng_init(struct hwrng *rng); static int hwrng_fillfn(void *unused); static inline int rng_get_data(struct hwrng *rng, u8 *buffer, size_t size, int wait); static size_t rng_buffer_size(void) { return RNG_BUFFER_SIZE; } static inline void cleanup_rng(struct kref *kref) { struct hwrng *rng = container_of(kref, struct hwrng, ref); if (rng->cleanup) rng->cleanup(rng); complete(&rng->cleanup_done); } static int set_current_rng(struct hwrng *rng) { int err; BUG_ON(!mutex_is_locked(&rng_mutex)); err = hwrng_init(rng); if (err) return err; drop_current_rng(); current_rng = rng; /* if necessary, start hwrng thread */ if (!hwrng_fill) { hwrng_fill = kthread_run(hwrng_fillfn, NULL, "hwrng"); if (IS_ERR(hwrng_fill)) { pr_err("hwrng_fill thread creation failed\n"); hwrng_fill = NULL; } } return 0; } static void drop_current_rng(void) { BUG_ON(!mutex_is_locked(&rng_mutex)); if (!current_rng) return; /* decrease last reference for triggering the cleanup */ kref_put(¤t_rng->ref, cleanup_rng); current_rng = NULL; } /* Returns ERR_PTR(), NULL or refcounted hwrng */ static struct hwrng *get_current_rng_nolock(void) { if (current_rng) kref_get(¤t_rng->ref); return current_rng; } static struct hwrng *get_current_rng(void) { struct hwrng *rng; if (mutex_lock_interruptible(&rng_mutex)) return ERR_PTR(-ERESTARTSYS); rng = get_current_rng_nolock(); mutex_unlock(&rng_mutex); return rng; } static void put_rng(struct hwrng *rng) { /* * Hold rng_mutex here so we serialize in case they set_current_rng * on rng again immediately. */ mutex_lock(&rng_mutex); if (rng) kref_put(&rng->ref, cleanup_rng); mutex_unlock(&rng_mutex); } static int hwrng_init(struct hwrng *rng) { if (kref_get_unless_zero(&rng->ref)) goto skip_init; if (rng->init) { int ret; ret = rng->init(rng); if (ret) return ret; } kref_init(&rng->ref); reinit_completion(&rng->cleanup_done); skip_init: current_quality = rng->quality; /* obsolete */ return 0; } static int rng_dev_open(struct inode *inode, struct file *filp) { /* enforce read-only access to this chrdev */ if ((filp->f_mode & FMODE_READ) == 0) return -EINVAL; if (filp->f_mode & FMODE_WRITE) return -EINVAL; return 0; } static inline int rng_get_data(struct hwrng *rng, u8 *buffer, size_t size, int wait) { int present; BUG_ON(!mutex_is_locked(&reading_mutex)); if (rng->read) { int err; err = rng->read(rng, buffer, size, wait); if (WARN_ON_ONCE(err > 0 && err > size)) err = size; return err; } if (rng->data_present) present = rng->data_present(rng, wait); else present = 1; if (present) return rng->data_read(rng, (u32 *)buffer); return 0; } static ssize_t rng_dev_read(struct file *filp, char __user *buf, size_t size, loff_t *offp) { u8 buffer[RNG_BUFFER_SIZE]; ssize_t ret = 0; int err = 0; int bytes_read, len; struct hwrng *rng; while (size) { rng = get_current_rng(); if (IS_ERR(rng)) { err = PTR_ERR(rng); goto out; } if (!rng) { err = -ENODEV; goto out; } if (mutex_lock_interruptible(&reading_mutex)) { err = -ERESTARTSYS; goto out_put; } if (!data_avail) { bytes_read = rng_get_data(rng, rng_buffer, rng_buffer_size(), !(filp->f_flags & O_NONBLOCK)); if (bytes_read < 0) { err = bytes_read; goto out_unlock_reading; } else if (bytes_read == 0 && (filp->f_flags & O_NONBLOCK)) { err = -EAGAIN; goto out_unlock_reading; } data_avail = bytes_read; } len = data_avail; if (len) { if (len > size) len = size; data_avail -= len; memcpy(buffer, rng_buffer + data_avail, len); } mutex_unlock(&reading_mutex); put_rng(rng); if (len) { if (copy_to_user(buf + ret, buffer, len)) { err = -EFAULT; goto out; } size -= len; ret += len; } if (need_resched()) schedule_timeout_interruptible(1); if (signal_pending(current)) { err = -ERESTARTSYS; goto out; } } out: memzero_explicit(buffer, sizeof(buffer)); return ret ? : err; out_unlock_reading: mutex_unlock(&reading_mutex); out_put: put_rng(rng); goto out; } static const struct file_operations rng_chrdev_ops = { .owner = THIS_MODULE, .open = rng_dev_open, .read = rng_dev_read, .llseek = noop_llseek, }; static const struct attribute_group *rng_dev_groups[]; static struct miscdevice rng_miscdev = { .minor = HWRNG_MINOR, .name = RNG_MODULE_NAME, .nodename = "hwrng", .fops = &rng_chrdev_ops, .groups = rng_dev_groups, }; static int enable_best_rng(void) { struct hwrng *rng, *new_rng = NULL; int ret = -ENODEV; BUG_ON(!mutex_is_locked(&rng_mutex)); /* no rng to use? */ if (list_empty(&rng_list)) { drop_current_rng(); cur_rng_set_by_user = 0; return 0; } /* use the rng which offers the best quality */ list_for_each_entry(rng, &rng_list, list) { if (!new_rng || rng->quality > new_rng->quality) new_rng = rng; } ret = ((new_rng == current_rng) ? 0 : set_current_rng(new_rng)); if (!ret) cur_rng_set_by_user = 0; return ret; } static ssize_t rng_current_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { int err; struct hwrng *rng, *new_rng; err = mutex_lock_interruptible(&rng_mutex); if (err) return -ERESTARTSYS; if (sysfs_streq(buf, "")) { err = enable_best_rng(); } else { list_for_each_entry(rng, &rng_list, list) { if (sysfs_streq(rng->name, buf)) { err = set_current_rng(rng); if (!err) cur_rng_set_by_user = 1; break; } } } new_rng = get_current_rng_nolock(); mutex_unlock(&rng_mutex); if (new_rng) put_rng(new_rng); return err ? : len; } static ssize_t rng_current_show(struct device *dev, struct device_attribute *attr, char *buf) { ssize_t ret; struct hwrng *rng; rng = get_current_rng(); if (IS_ERR(rng)) return PTR_ERR(rng); ret = sysfs_emit(buf, "%s\n", rng ? rng->name : "none"); put_rng(rng); return ret; } static ssize_t rng_available_show(struct device *dev, struct device_attribute *attr, char *buf) { int err; struct hwrng *rng; err = mutex_lock_interruptible(&rng_mutex); if (err) return -ERESTARTSYS; buf[0] = '\0'; list_for_each_entry(rng, &rng_list, list) { strlcat(buf, rng->name, PAGE_SIZE); strlcat(buf, " ", PAGE_SIZE); } strlcat(buf, "\n", PAGE_SIZE); mutex_unlock(&rng_mutex); return strlen(buf); } static ssize_t rng_selected_show(struct device *dev, struct device_attribute *attr, char *buf) { return sysfs_emit(buf, "%d\n", cur_rng_set_by_user); } static ssize_t rng_quality_show(struct device *dev, struct device_attribute *attr, char *buf) { ssize_t ret; struct hwrng *rng; rng = get_current_rng(); if (IS_ERR(rng)) return PTR_ERR(rng); if (!rng) /* no need to put_rng */ return -ENODEV; ret = sysfs_emit(buf, "%hu\n", rng->quality); put_rng(rng); return ret; } static ssize_t rng_quality_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { u16 quality; int ret = -EINVAL; if (len < 2) return -EINVAL; ret = mutex_lock_interruptible(&rng_mutex); if (ret) return -ERESTARTSYS; ret = kstrtou16(buf, 0, &quality); if (ret || quality > 1024) { ret = -EINVAL; goto out; } if (!current_rng) { ret = -ENODEV; goto out; } current_rng->quality = quality; current_quality = quality; /* obsolete */ /* the best available RNG may have changed */ ret = enable_best_rng(); out: mutex_unlock(&rng_mutex); return ret ? ret : len; } static DEVICE_ATTR_RW(rng_current); static DEVICE_ATTR_RO(rng_available); static DEVICE_ATTR_RO(rng_selected); static DEVICE_ATTR_RW(rng_quality); static struct attribute *rng_dev_attrs[] = { &dev_attr_rng_current.attr, &dev_attr_rng_available.attr, &dev_attr_rng_selected.attr, &dev_attr_rng_quality.attr, NULL }; ATTRIBUTE_GROUPS(rng_dev); static int hwrng_fillfn(void *unused) { size_t entropy, entropy_credit = 0; /* in 1/1024 of a bit */ long rc; while (!kthread_should_stop()) { unsigned short quality; struct hwrng *rng; rng = get_current_rng(); if (IS_ERR(rng) || !rng) break; mutex_lock(&reading_mutex); rc = rng_get_data(rng, rng_fillbuf, rng_buffer_size(), 1); if (current_quality != rng->quality) rng->quality = current_quality; /* obsolete */ quality = rng->quality; mutex_unlock(&reading_mutex); if (rc <= 0) hwrng_msleep(rng, 10000); put_rng(rng); if (rc <= 0) continue; /* If we cannot credit at least one bit of entropy, * keep track of the remainder for the next iteration */ entropy = rc * quality * 8 + entropy_credit; if ((entropy >> 10) == 0) entropy_credit = entropy; /* Outside lock, sure, but y'know: randomness. */ add_hwgenerator_randomness((void *)rng_fillbuf, rc, entropy >> 10, true); } hwrng_fill = NULL; return 0; } int hwrng_register(struct hwrng *rng) { int err = -EINVAL; struct hwrng *tmp; if (!rng->name || (!rng->data_read && !rng->read)) goto out; mutex_lock(&rng_mutex); /* Must not register two RNGs with the same name. */ err = -EEXIST; list_for_each_entry(tmp, &rng_list, list) { if (strcmp(tmp->name, rng->name) == 0) goto out_unlock; } list_add_tail(&rng->list, &rng_list); init_completion(&rng->cleanup_done); complete(&rng->cleanup_done); init_completion(&rng->dying); /* Adjust quality field to always have a proper value */ rng->quality = min_t(u16, min_t(u16, default_quality, 1024), rng->quality ?: 1024); if (!current_rng || (!cur_rng_set_by_user && rng->quality > current_rng->quality)) { /* * Set new rng as current as the new rng source * provides better entropy quality and was not * chosen by userspace. */ err = set_current_rng(rng); if (err) goto out_unlock; } mutex_unlock(&rng_mutex); return 0; out_unlock: mutex_unlock(&rng_mutex); out: return err; } EXPORT_SYMBOL_GPL(hwrng_register); void hwrng_unregister(struct hwrng *rng) { struct hwrng *new_rng; int err; mutex_lock(&rng_mutex); list_del(&rng->list); complete_all(&rng->dying); if (current_rng == rng) { err = enable_best_rng(); if (err) { drop_current_rng(); cur_rng_set_by_user = 0; } } new_rng = get_current_rng_nolock(); if (list_empty(&rng_list)) { mutex_unlock(&rng_mutex); if (hwrng_fill) kthread_stop(hwrng_fill); } else mutex_unlock(&rng_mutex); if (new_rng) put_rng(new_rng); wait_for_completion(&rng->cleanup_done); } EXPORT_SYMBOL_GPL(hwrng_unregister); static void devm_hwrng_release(struct device *dev, void *res) { hwrng_unregister(*(struct hwrng **)res); } static int devm_hwrng_match(struct device *dev, void *res, void *data) { struct hwrng **r = res; if (WARN_ON(!r || !*r)) return 0; return *r == data; } int devm_hwrng_register(struct device *dev, struct hwrng *rng) { struct hwrng **ptr; int error; ptr = devres_alloc(devm_hwrng_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return -ENOMEM; error = hwrng_register(rng); if (error) { devres_free(ptr); return error; } *ptr = rng; devres_add(dev, ptr); return 0; } EXPORT_SYMBOL_GPL(devm_hwrng_register); void devm_hwrng_unregister(struct device *dev, struct hwrng *rng) { devres_release(dev, devm_hwrng_release, devm_hwrng_match, rng); } EXPORT_SYMBOL_GPL(devm_hwrng_unregister); long hwrng_msleep(struct hwrng *rng, unsigned int msecs) { unsigned long timeout = msecs_to_jiffies(msecs) + 1; return wait_for_completion_interruptible_timeout(&rng->dying, timeout); } EXPORT_SYMBOL_GPL(hwrng_msleep); long hwrng_yield(struct hwrng *rng) { return wait_for_completion_interruptible_timeout(&rng->dying, 1); } EXPORT_SYMBOL_GPL(hwrng_yield); static int __init hwrng_modinit(void) { int ret; /* kmalloc makes this safe for virt_to_page() in virtio_rng.c */ rng_buffer = kmalloc(rng_buffer_size(), GFP_KERNEL); if (!rng_buffer) return -ENOMEM; rng_fillbuf = kmalloc(rng_buffer_size(), GFP_KERNEL); if (!rng_fillbuf) { kfree(rng_buffer); return -ENOMEM; } ret = misc_register(&rng_miscdev); if (ret) { kfree(rng_fillbuf); kfree(rng_buffer); } return ret; } static void __exit hwrng_modexit(void) { mutex_lock(&rng_mutex); BUG_ON(current_rng); kfree(rng_buffer); kfree(rng_fillbuf); mutex_unlock(&rng_mutex); misc_deregister(&rng_miscdev); } fs_initcall(hwrng_modinit); /* depends on misc_register() */ module_exit(hwrng_modexit); MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver"); MODULE_LICENSE("GPL"); |
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4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 | // SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 1991, 1992 Linus Torvalds */ /* * Hopefully this will be a rather complete VT102 implementation. * * Beeping thanks to John T Kohl. * * Virtual Consoles, Screen Blanking, Screen Dumping, Color, Graphics * Chars, and VT100 enhancements by Peter MacDonald. * * Copy and paste function by Andrew Haylett, * some enhancements by Alessandro Rubini. * * Code to check for different video-cards mostly by Galen Hunt, * <g-hunt@ee.utah.edu> * * Rudimentary ISO 10646/Unicode/UTF-8 character set support by * Markus Kuhn, <mskuhn@immd4.informatik.uni-erlangen.de>. * * Dynamic allocation of consoles, aeb@cwi.nl, May 1994 * Resizing of consoles, aeb, 940926 * * Code for xterm like mouse click reporting by Peter Orbaek 20-Jul-94 * <poe@daimi.aau.dk> * * User-defined bell sound, new setterm control sequences and printk * redirection by Martin Mares <mj@k332.feld.cvut.cz> 19-Nov-95 * * APM screenblank bug fixed Takashi Manabe <manabe@roy.dsl.tutics.tut.jp> * * Merge with the abstract console driver by Geert Uytterhoeven * <geert@linux-m68k.org>, Jan 1997. * * Original m68k console driver modifications by * * - Arno Griffioen <arno@usn.nl> * - David Carter <carter@cs.bris.ac.uk> * * The abstract console driver provides a generic interface for a text * console. It supports VGA text mode, frame buffer based graphical consoles * and special graphics processors that are only accessible through some * registers (e.g. a TMS340x0 GSP). * * The interface to the hardware is specified using a special structure * (struct consw) which contains function pointers to console operations * (see <linux/console.h> for more information). * * Support for changeable cursor shape * by Pavel Machek <pavel@atrey.karlin.mff.cuni.cz>, August 1997 * * Ported to i386 and con_scrolldelta fixed * by Emmanuel Marty <core@ggi-project.org>, April 1998 * * Resurrected character buffers in videoram plus lots of other trickery * by Martin Mares <mj@atrey.karlin.mff.cuni.cz>, July 1998 * * Removed old-style timers, introduced console_timer, made timer * deletion SMP-safe. 17Jun00, Andrew Morton * * Removed console_lock, enabled interrupts across all console operations * 13 March 2001, Andrew Morton * * Fixed UTF-8 mode so alternate charset modes always work according * to control sequences interpreted in do_con_trol function * preserving backward VT100 semigraphics compatibility, * malformed UTF sequences represented as sequences of replacement glyphs, * original codes or '?' as a last resort if replacement glyph is undefined * by Adam Tla/lka <atlka@pg.gda.pl>, Aug 2006 */ #include <linux/module.h> #include <linux/types.h> #include <linux/sched/signal.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/kd.h> #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/major.h> #include <linux/mm.h> #include <linux/console.h> #include <linux/init.h> #include <linux/mutex.h> #include <linux/vt_kern.h> #include <linux/selection.h> #include <linux/tiocl.h> #include <linux/kbd_kern.h> #include <linux/consolemap.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/workqueue.h> #include <linux/pm.h> #include <linux/font.h> #include <linux/bitops.h> #include <linux/notifier.h> #include <linux/device.h> #include <linux/io.h> #include <linux/uaccess.h> #include <linux/kdb.h> #include <linux/ctype.h> #include <linux/bsearch.h> #include <linux/gcd.h> #define MAX_NR_CON_DRIVER 16 #define CON_DRIVER_FLAG_MODULE 1 #define CON_DRIVER_FLAG_INIT 2 #define CON_DRIVER_FLAG_ATTR 4 #define CON_DRIVER_FLAG_ZOMBIE 8 struct con_driver { const struct consw *con; const char *desc; struct device *dev; int node; int first; int last; int flag; }; static struct con_driver registered_con_driver[MAX_NR_CON_DRIVER]; const struct consw *conswitchp; /* * Here is the default bell parameters: 750HZ, 1/8th of a second */ #define DEFAULT_BELL_PITCH 750 #define DEFAULT_BELL_DURATION (HZ/8) #define DEFAULT_CURSOR_BLINK_MS 200 struct vc vc_cons [MAX_NR_CONSOLES]; EXPORT_SYMBOL(vc_cons); static const struct consw *con_driver_map[MAX_NR_CONSOLES]; static int con_open(struct tty_struct *, struct file *); static void vc_init(struct vc_data *vc, int do_clear); static void gotoxy(struct vc_data *vc, int new_x, int new_y); static void save_cur(struct vc_data *vc); static void reset_terminal(struct vc_data *vc, int do_clear); static void con_flush_chars(struct tty_struct *tty); static int set_vesa_blanking(u8 __user *mode); static void set_cursor(struct vc_data *vc); static void hide_cursor(struct vc_data *vc); static void console_callback(struct work_struct *ignored); static void con_driver_unregister_callback(struct work_struct *ignored); static void blank_screen_t(struct timer_list *unused); static void set_palette(struct vc_data *vc); static void unblank_screen(void); #define vt_get_kmsg_redirect() vt_kmsg_redirect(-1) int default_utf8 = true; module_param(default_utf8, int, S_IRUGO | S_IWUSR); int global_cursor_default = -1; module_param(global_cursor_default, int, S_IRUGO | S_IWUSR); EXPORT_SYMBOL(global_cursor_default); static int cur_default = CUR_UNDERLINE; module_param(cur_default, int, S_IRUGO | S_IWUSR); /* * ignore_poke: don't unblank the screen when things are typed. This is * mainly for the privacy of braille terminal users. */ static int ignore_poke; int do_poke_blanked_console; int console_blanked; EXPORT_SYMBOL(console_blanked); static enum vesa_blank_mode vesa_blank_mode; static int vesa_off_interval; static int blankinterval; core_param(consoleblank, blankinterval, int, 0444); static DECLARE_WORK(console_work, console_callback); static DECLARE_WORK(con_driver_unregister_work, con_driver_unregister_callback); /* * fg_console is the current virtual console, * last_console is the last used one, * want_console is the console we want to switch to, * saved_* variants are for save/restore around kernel debugger enter/leave */ int fg_console; EXPORT_SYMBOL(fg_console); int last_console; int want_console = -1; static int saved_fg_console; static int saved_last_console; static int saved_want_console; static int saved_vc_mode; static int saved_console_blanked; /* * For each existing display, we have a pointer to console currently visible * on that display, allowing consoles other than fg_console to be refreshed * appropriately. Unless the low-level driver supplies its own display_fg * variable, we use this one for the "master display". */ static struct vc_data *master_display_fg; /* * Unfortunately, we need to delay tty echo when we're currently writing to the * console since the code is (and always was) not re-entrant, so we schedule * all flip requests to process context with schedule-task() and run it from * console_callback(). */ /* * For the same reason, we defer scrollback to the console callback. */ static int scrollback_delta; /* * Hook so that the power management routines can (un)blank * the console on our behalf. */ int (*console_blank_hook)(int); EXPORT_SYMBOL(console_blank_hook); static DEFINE_TIMER(console_timer, blank_screen_t); static int blank_state; static int blank_timer_expired; enum { blank_off = 0, blank_normal_wait, blank_vesa_wait, }; /* * /sys/class/tty/tty0/ * * the attribute 'active' contains the name of the current vc * console and it supports poll() to detect vc switches */ static struct device *tty0dev; /* * Notifier list for console events. */ static ATOMIC_NOTIFIER_HEAD(vt_notifier_list); int register_vt_notifier(struct notifier_block *nb) { return atomic_notifier_chain_register(&vt_notifier_list, nb); } EXPORT_SYMBOL_GPL(register_vt_notifier); int unregister_vt_notifier(struct notifier_block *nb) { return atomic_notifier_chain_unregister(&vt_notifier_list, nb); } EXPORT_SYMBOL_GPL(unregister_vt_notifier); static void notify_write(struct vc_data *vc, unsigned int unicode) { struct vt_notifier_param param = { .vc = vc, .c = unicode }; atomic_notifier_call_chain(&vt_notifier_list, VT_WRITE, ¶m); } static void notify_update(struct vc_data *vc) { struct vt_notifier_param param = { .vc = vc }; atomic_notifier_call_chain(&vt_notifier_list, VT_UPDATE, ¶m); } /* * Low-Level Functions */ static inline bool con_is_fg(const struct vc_data *vc) { return vc->vc_num == fg_console; } static inline bool con_should_update(const struct vc_data *vc) { return con_is_visible(vc) && !console_blanked; } static inline u16 *screenpos(const struct vc_data *vc, unsigned int offset, bool viewed) { unsigned long origin = viewed ? vc->vc_visible_origin : vc->vc_origin; return (u16 *)(origin + offset); } static void con_putc(struct vc_data *vc, u16 ca, unsigned int y, unsigned int x) { if (vc->vc_sw->con_putc) vc->vc_sw->con_putc(vc, ca, y, x); else vc->vc_sw->con_putcs(vc, &ca, 1, y, x); } /* Called from the keyboard irq path.. */ static inline void scrolldelta(int lines) { /* FIXME */ /* scrolldelta needs some kind of consistency lock, but the BKL was and still is not protecting versus the scheduled back end */ scrollback_delta += lines; schedule_console_callback(); } void schedule_console_callback(void) { schedule_work(&console_work); } /* * Code to manage unicode-based screen buffers */ /* * Our screen buffer is preceded by an array of line pointers so that * scrolling only implies some pointer shuffling. */ static u32 **vc_uniscr_alloc(unsigned int cols, unsigned int rows) { u32 **uni_lines; void *p; unsigned int memsize, i, col_size = cols * sizeof(**uni_lines); /* allocate everything in one go */ memsize = col_size * rows; memsize += rows * sizeof(*uni_lines); uni_lines = vzalloc(memsize); if (!uni_lines) return NULL; /* initial line pointers */ p = uni_lines + rows; for (i = 0; i < rows; i++) { uni_lines[i] = p; p += col_size; } return uni_lines; } static void vc_uniscr_free(u32 **uni_lines) { vfree(uni_lines); } static void vc_uniscr_set(struct vc_data *vc, u32 **new_uni_lines) { vc_uniscr_free(vc->vc_uni_lines); vc->vc_uni_lines = new_uni_lines; } static void vc_uniscr_putc(struct vc_data *vc, u32 uc) { if (vc->vc_uni_lines) vc->vc_uni_lines[vc->state.y][vc->state.x] = uc; } static void vc_uniscr_insert(struct vc_data *vc, unsigned int nr) { if (vc->vc_uni_lines) { u32 *ln = vc->vc_uni_lines[vc->state.y]; unsigned int x = vc->state.x, cols = vc->vc_cols; memmove(&ln[x + nr], &ln[x], (cols - x - nr) * sizeof(*ln)); memset32(&ln[x], ' ', nr); } } static void vc_uniscr_delete(struct vc_data *vc, unsigned int nr) { if (vc->vc_uni_lines) { u32 *ln = vc->vc_uni_lines[vc->state.y]; unsigned int x = vc->state.x, cols = vc->vc_cols; memmove(&ln[x], &ln[x + nr], (cols - x - nr) * sizeof(*ln)); memset32(&ln[cols - nr], ' ', nr); } } static void vc_uniscr_clear_line(struct vc_data *vc, unsigned int x, unsigned int nr) { if (vc->vc_uni_lines) memset32(&vc->vc_uni_lines[vc->state.y][x], ' ', nr); } static void vc_uniscr_clear_lines(struct vc_data *vc, unsigned int y, unsigned int nr) { if (vc->vc_uni_lines) while (nr--) memset32(vc->vc_uni_lines[y++], ' ', vc->vc_cols); } /* juggling array rotation algorithm (complexity O(N), size complexity O(1)) */ static void juggle_array(u32 **array, unsigned int size, unsigned int nr) { unsigned int gcd_idx; for (gcd_idx = 0; gcd_idx < gcd(nr, size); gcd_idx++) { u32 *gcd_idx_val = array[gcd_idx]; unsigned int dst_idx = gcd_idx; while (1) { unsigned int src_idx = (dst_idx + nr) % size; if (src_idx == gcd_idx) break; array[dst_idx] = array[src_idx]; dst_idx = src_idx; } array[dst_idx] = gcd_idx_val; } } static void vc_uniscr_scroll(struct vc_data *vc, unsigned int top, unsigned int bottom, enum con_scroll dir, unsigned int nr) { u32 **uni_lines = vc->vc_uni_lines; unsigned int size = bottom - top; if (!uni_lines) return; if (dir == SM_DOWN) { juggle_array(&uni_lines[top], size, size - nr); vc_uniscr_clear_lines(vc, top, nr); } else { juggle_array(&uni_lines[top], size, nr); vc_uniscr_clear_lines(vc, bottom - nr, nr); } } static void vc_uniscr_copy_area(u32 **dst_lines, unsigned int dst_cols, unsigned int dst_rows, u32 **src_lines, unsigned int src_cols, unsigned int src_top_row, unsigned int src_bot_row) { unsigned int dst_row = 0; if (!dst_lines) return; while (src_top_row < src_bot_row) { u32 *src_line = src_lines[src_top_row]; u32 *dst_line = dst_lines[dst_row]; memcpy(dst_line, src_line, src_cols * sizeof(*src_line)); if (dst_cols - src_cols) memset32(dst_line + src_cols, ' ', dst_cols - src_cols); src_top_row++; dst_row++; } while (dst_row < dst_rows) { u32 *dst_line = dst_lines[dst_row]; memset32(dst_line, ' ', dst_cols); dst_row++; } } /* * Called from vcs_read() to make sure unicode screen retrieval is possible. * This will initialize the unicode screen buffer if not already done. * This returns 0 if OK, or a negative error code otherwise. * In particular, -ENODATA is returned if the console is not in UTF-8 mode. */ int vc_uniscr_check(struct vc_data *vc) { u32 **uni_lines; unsigned short *p; int x, y, mask; WARN_CONSOLE_UNLOCKED(); if (!vc->vc_utf) return -ENODATA; if (vc->vc_uni_lines) return 0; uni_lines = vc_uniscr_alloc(vc->vc_cols, vc->vc_rows); if (!uni_lines) return -ENOMEM; /* * Let's populate it initially with (imperfect) reverse translation. * This is the next best thing we can do short of having it enabled * from the start even when no users rely on this functionality. True * unicode content will be available after a complete screen refresh. */ p = (unsigned short *)vc->vc_origin; mask = vc->vc_hi_font_mask | 0xff; for (y = 0; y < vc->vc_rows; y++) { u32 *line = uni_lines[y]; for (x = 0; x < vc->vc_cols; x++) { u16 glyph = scr_readw(p++) & mask; line[x] = inverse_translate(vc, glyph, true); } } vc->vc_uni_lines = uni_lines; return 0; } /* * Called from vcs_read() to get the unicode data from the screen. * This must be preceded by a successful call to vc_uniscr_check() once * the console lock has been taken. */ void vc_uniscr_copy_line(const struct vc_data *vc, void *dest, bool viewed, unsigned int row, unsigned int col, unsigned int nr) { u32 **uni_lines = vc->vc_uni_lines; int offset = row * vc->vc_size_row + col * 2; unsigned long pos; if (WARN_ON_ONCE(!uni_lines)) return; pos = (unsigned long)screenpos(vc, offset, viewed); if (pos >= vc->vc_origin && pos < vc->vc_scr_end) { /* * Desired position falls in the main screen buffer. * However the actual row/col might be different if * scrollback is active. */ row = (pos - vc->vc_origin) / vc->vc_size_row; col = ((pos - vc->vc_origin) % vc->vc_size_row) / 2; memcpy(dest, &uni_lines[row][col], nr * sizeof(u32)); } else { /* * Scrollback is active. For now let's simply backtranslate * the screen glyphs until the unicode screen buffer does * synchronize with console display drivers for a scrollback * buffer of its own. */ u16 *p = (u16 *)pos; int mask = vc->vc_hi_font_mask | 0xff; u32 *uni_buf = dest; while (nr--) { u16 glyph = scr_readw(p++) & mask; *uni_buf++ = inverse_translate(vc, glyph, true); } } } static void con_scroll(struct vc_data *vc, unsigned int top, unsigned int bottom, enum con_scroll dir, unsigned int nr) { unsigned int rows = bottom - top; u16 *clear, *dst, *src; if (top + nr >= bottom) nr = rows - 1; if (bottom > vc->vc_rows || top >= bottom || nr < 1) return; vc_uniscr_scroll(vc, top, bottom, dir, nr); if (con_is_visible(vc) && vc->vc_sw->con_scroll(vc, top, bottom, dir, nr)) return; src = clear = (u16 *)(vc->vc_origin + vc->vc_size_row * top); dst = (u16 *)(vc->vc_origin + vc->vc_size_row * (top + nr)); if (dir == SM_UP) { clear = src + (rows - nr) * vc->vc_cols; swap(src, dst); } scr_memmovew(dst, src, (rows - nr) * vc->vc_size_row); scr_memsetw(clear, vc->vc_video_erase_char, vc->vc_size_row * nr); } static void do_update_region(struct vc_data *vc, unsigned long start, int count) { unsigned int xx, yy, offset; u16 *p = (u16 *)start; offset = (start - vc->vc_origin) / 2; xx = offset % vc->vc_cols; yy = offset / vc->vc_cols; for(;;) { u16 attrib = scr_readw(p) & 0xff00; int startx = xx; u16 *q = p; while (xx < vc->vc_cols && count) { if (attrib != (scr_readw(p) & 0xff00)) { if (p > q) vc->vc_sw->con_putcs(vc, q, p-q, yy, startx); startx = xx; q = p; attrib = scr_readw(p) & 0xff00; } p++; xx++; count--; } if (p > q) vc->vc_sw->con_putcs(vc, q, p-q, yy, startx); if (!count) break; xx = 0; yy++; } } void update_region(struct vc_data *vc, unsigned long start, int count) { WARN_CONSOLE_UNLOCKED(); if (con_should_update(vc)) { hide_cursor(vc); do_update_region(vc, start, count); set_cursor(vc); } } EXPORT_SYMBOL(update_region); /* Structure of attributes is hardware-dependent */ static u8 build_attr(struct vc_data *vc, u8 _color, enum vc_intensity _intensity, bool _blink, bool _underline, bool _reverse, bool _italic) { if (vc->vc_sw->con_build_attr) return vc->vc_sw->con_build_attr(vc, _color, _intensity, _blink, _underline, _reverse, _italic); /* * ++roman: I completely changed the attribute format for monochrome * mode (!can_do_color). The formerly used MDA (monochrome display * adapter) format didn't allow the combination of certain effects. * Now the attribute is just a bit vector: * Bit 0..1: intensity (0..2) * Bit 2 : underline * Bit 3 : reverse * Bit 7 : blink */ { u8 a = _color; if (!vc->vc_can_do_color) return _intensity | (_italic << 1) | (_underline << 2) | (_reverse << 3) | (_blink << 7); if (_italic) a = (a & 0xF0) | vc->vc_itcolor; else if (_underline) a = (a & 0xf0) | vc->vc_ulcolor; else if (_intensity == VCI_HALF_BRIGHT) a = (a & 0xf0) | vc->vc_halfcolor; if (_reverse) a = (a & 0x88) | (((a >> 4) | (a << 4)) & 0x77); if (_blink) a ^= 0x80; if (_intensity == VCI_BOLD) a ^= 0x08; if (vc->vc_hi_font_mask == 0x100) a <<= 1; return a; } } static void update_attr(struct vc_data *vc) { vc->vc_attr = build_attr(vc, vc->state.color, vc->state.intensity, vc->state.blink, vc->state.underline, vc->state.reverse ^ vc->vc_decscnm, vc->state.italic); vc->vc_video_erase_char = ' ' | (build_attr(vc, vc->state.color, VCI_NORMAL, vc->state.blink, false, vc->vc_decscnm, false) << 8); } /* Note: inverting the screen twice should revert to the original state */ void invert_screen(struct vc_data *vc, int offset, int count, bool viewed) { u16 *p; WARN_CONSOLE_UNLOCKED(); count /= 2; p = screenpos(vc, offset, viewed); if (vc->vc_sw->con_invert_region) { vc->vc_sw->con_invert_region(vc, p, count); } else { u16 *q = p; int cnt = count; u16 a; if (!vc->vc_can_do_color) { while (cnt--) { a = scr_readw(q); a ^= 0x0800; scr_writew(a, q); q++; } } else if (vc->vc_hi_font_mask == 0x100) { while (cnt--) { a = scr_readw(q); a = (a & 0x11ff) | ((a & 0xe000) >> 4) | ((a & 0x0e00) << 4); scr_writew(a, q); q++; } } else { while (cnt--) { a = scr_readw(q); a = (a & 0x88ff) | ((a & 0x7000) >> 4) | ((a & 0x0700) << 4); scr_writew(a, q); q++; } } } if (con_should_update(vc)) do_update_region(vc, (unsigned long) p, count); notify_update(vc); } /* used by selection: complement pointer position */ void complement_pos(struct vc_data *vc, int offset) { static int old_offset = -1; static unsigned short old; static unsigned short oldx, oldy; WARN_CONSOLE_UNLOCKED(); if (old_offset != -1 && old_offset >= 0 && old_offset < vc->vc_screenbuf_size) { scr_writew(old, screenpos(vc, old_offset, true)); if (con_should_update(vc)) con_putc(vc, old, oldy, oldx); notify_update(vc); } old_offset = offset; if (offset != -1 && offset >= 0 && offset < vc->vc_screenbuf_size) { unsigned short new; u16 *p = screenpos(vc, offset, true); old = scr_readw(p); new = old ^ vc->vc_complement_mask; scr_writew(new, p); if (con_should_update(vc)) { oldx = (offset >> 1) % vc->vc_cols; oldy = (offset >> 1) / vc->vc_cols; con_putc(vc, new, oldy, oldx); } notify_update(vc); } } static void insert_char(struct vc_data *vc, unsigned int nr) { unsigned short *p = (unsigned short *) vc->vc_pos; vc_uniscr_insert(vc, nr); scr_memmovew(p + nr, p, (vc->vc_cols - vc->state.x - nr) * 2); scr_memsetw(p, vc->vc_video_erase_char, nr * 2); vc->vc_need_wrap = 0; if (con_should_update(vc)) do_update_region(vc, (unsigned long) p, vc->vc_cols - vc->state.x); } static void delete_char(struct vc_data *vc, unsigned int nr) { unsigned short *p = (unsigned short *) vc->vc_pos; vc_uniscr_delete(vc, nr); scr_memmovew(p, p + nr, (vc->vc_cols - vc->state.x - nr) * 2); scr_memsetw(p + vc->vc_cols - vc->state.x - nr, vc->vc_video_erase_char, nr * 2); vc->vc_need_wrap = 0; if (con_should_update(vc)) do_update_region(vc, (unsigned long) p, vc->vc_cols - vc->state.x); } static int softcursor_original = -1; static void add_softcursor(struct vc_data *vc) { int i = scr_readw((u16 *) vc->vc_pos); u32 type = vc->vc_cursor_type; if (!(type & CUR_SW)) return; if (softcursor_original != -1) return; softcursor_original = i; i |= CUR_SET(type); i ^= CUR_CHANGE(type); if ((type & CUR_ALWAYS_BG) && (softcursor_original & CUR_BG) == (i & CUR_BG)) i ^= CUR_BG; if ((type & CUR_INVERT_FG_BG) && (i & CUR_FG) == ((i & CUR_BG) >> 4)) i ^= CUR_FG; scr_writew(i, (u16 *)vc->vc_pos); if (con_should_update(vc)) con_putc(vc, i, vc->state.y, vc->state.x); } static void hide_softcursor(struct vc_data *vc) { if (softcursor_original != -1) { scr_writew(softcursor_original, (u16 *)vc->vc_pos); if (con_should_update(vc)) con_putc(vc, softcursor_original, vc->state.y, vc->state.x); softcursor_original = -1; } } static void hide_cursor(struct vc_data *vc) { if (vc_is_sel(vc)) clear_selection(); vc->vc_sw->con_cursor(vc, false); hide_softcursor(vc); } static void set_cursor(struct vc_data *vc) { if (!con_is_fg(vc) || console_blanked || vc->vc_mode == KD_GRAPHICS) return; if (vc->vc_deccm) { if (vc_is_sel(vc)) clear_selection(); add_softcursor(vc); if (CUR_SIZE(vc->vc_cursor_type) != CUR_NONE) vc->vc_sw->con_cursor(vc, true); } else hide_cursor(vc); } static void set_origin(struct vc_data *vc) { WARN_CONSOLE_UNLOCKED(); if (!con_is_visible(vc) || !vc->vc_sw->con_set_origin || !vc->vc_sw->con_set_origin(vc)) vc->vc_origin = (unsigned long)vc->vc_screenbuf; vc->vc_visible_origin = vc->vc_origin; vc->vc_scr_end = vc->vc_origin + vc->vc_screenbuf_size; vc->vc_pos = vc->vc_origin + vc->vc_size_row * vc->state.y + 2 * vc->state.x; } static void save_screen(struct vc_data *vc) { WARN_CONSOLE_UNLOCKED(); if (vc->vc_sw->con_save_screen) vc->vc_sw->con_save_screen(vc); } static void flush_scrollback(struct vc_data *vc) { WARN_CONSOLE_UNLOCKED(); set_origin(vc); if (!con_is_visible(vc)) return; /* * The legacy way for flushing the scrollback buffer is to use a side * effect of the con_switch method. We do it only on the foreground * console as background consoles have no scrollback buffers in that * case and we obviously don't want to switch to them. */ hide_cursor(vc); vc->vc_sw->con_switch(vc); set_cursor(vc); } /* * Redrawing of screen */ void clear_buffer_attributes(struct vc_data *vc) { unsigned short *p = (unsigned short *)vc->vc_origin; int count = vc->vc_screenbuf_size / 2; int mask = vc->vc_hi_font_mask | 0xff; for (; count > 0; count--, p++) { scr_writew((scr_readw(p)&mask) | (vc->vc_video_erase_char & ~mask), p); } } void redraw_screen(struct vc_data *vc, int is_switch) { int redraw = 0; WARN_CONSOLE_UNLOCKED(); if (!vc) { /* strange ... */ /* printk("redraw_screen: tty %d not allocated ??\n", new_console+1); */ return; } if (is_switch) { struct vc_data *old_vc = vc_cons[fg_console].d; if (old_vc == vc) return; if (!con_is_visible(vc)) redraw = 1; *vc->vc_display_fg = vc; fg_console = vc->vc_num; hide_cursor(old_vc); if (!con_is_visible(old_vc)) { save_screen(old_vc); set_origin(old_vc); } if (tty0dev) sysfs_notify(&tty0dev->kobj, NULL, "active"); } else { hide_cursor(vc); redraw = 1; } if (redraw) { bool update; int old_was_color = vc->vc_can_do_color; set_origin(vc); update = vc->vc_sw->con_switch(vc); set_palette(vc); /* * If console changed from mono<->color, the best we can do * is to clear the buffer attributes. As it currently stands, * rebuilding new attributes from the old buffer is not doable * without overly complex code. */ if (old_was_color != vc->vc_can_do_color) { update_attr(vc); clear_buffer_attributes(vc); } if (update && vc->vc_mode != KD_GRAPHICS) do_update_region(vc, vc->vc_origin, vc->vc_screenbuf_size / 2); } set_cursor(vc); if (is_switch) { vt_set_leds_compute_shiftstate(); notify_update(vc); } } EXPORT_SYMBOL(redraw_screen); /* * Allocation, freeing and resizing of VTs. */ int vc_cons_allocated(unsigned int i) { return (i < MAX_NR_CONSOLES && vc_cons[i].d); } static void visual_init(struct vc_data *vc, int num, bool init) { /* ++Geert: vc->vc_sw->con_init determines console size */ if (vc->vc_sw) module_put(vc->vc_sw->owner); vc->vc_sw = conswitchp; if (con_driver_map[num]) vc->vc_sw = con_driver_map[num]; __module_get(vc->vc_sw->owner); vc->vc_num = num; vc->vc_display_fg = &master_display_fg; if (vc->uni_pagedict_loc) con_free_unimap(vc); vc->uni_pagedict_loc = &vc->uni_pagedict; vc->uni_pagedict = NULL; vc->vc_hi_font_mask = 0; vc->vc_complement_mask = 0; vc->vc_can_do_color = 0; vc->vc_cur_blink_ms = DEFAULT_CURSOR_BLINK_MS; vc->vc_sw->con_init(vc, init); if (!vc->vc_complement_mask) vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; vc->vc_s_complement_mask = vc->vc_complement_mask; vc->vc_size_row = vc->vc_cols << 1; vc->vc_screenbuf_size = vc->vc_rows * vc->vc_size_row; } static void visual_deinit(struct vc_data *vc) { vc->vc_sw->con_deinit(vc); module_put(vc->vc_sw->owner); } static void vc_port_destruct(struct tty_port *port) { struct vc_data *vc = container_of(port, struct vc_data, port); kfree(vc); } static const struct tty_port_operations vc_port_ops = { .destruct = vc_port_destruct, }; /* * Change # of rows and columns (0 means unchanged/the size of fg_console) * [this is to be used together with some user program * like resize that changes the hardware videomode] */ #define VC_MAXCOL (32767) #define VC_MAXROW (32767) int vc_allocate(unsigned int currcons) /* return 0 on success */ { struct vt_notifier_param param; struct vc_data *vc; int err; WARN_CONSOLE_UNLOCKED(); if (currcons >= MAX_NR_CONSOLES) return -ENXIO; if (vc_cons[currcons].d) return 0; /* due to the granularity of kmalloc, we waste some memory here */ /* the alloc is done in two steps, to optimize the common situation of a 25x80 console (structsize=216, screenbuf_size=4000) */ /* although the numbers above are not valid since long ago, the point is still up-to-date and the comment still has its value even if only as a historical artifact. --mj, July 1998 */ param.vc = vc = kzalloc(sizeof(struct vc_data), GFP_KERNEL); if (!vc) return -ENOMEM; vc_cons[currcons].d = vc; tty_port_init(&vc->port); vc->port.ops = &vc_port_ops; INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK); visual_init(vc, currcons, true); if (!*vc->uni_pagedict_loc) con_set_default_unimap(vc); err = -EINVAL; if (vc->vc_cols > VC_MAXCOL || vc->vc_rows > VC_MAXROW || vc->vc_screenbuf_size > KMALLOC_MAX_SIZE || !vc->vc_screenbuf_size) goto err_free; err = -ENOMEM; vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size, GFP_KERNEL); if (!vc->vc_screenbuf) goto err_free; /* If no drivers have overridden us and the user didn't pass a boot option, default to displaying the cursor */ if (global_cursor_default == -1) global_cursor_default = 1; vc_init(vc, 1); vcs_make_sysfs(currcons); atomic_notifier_call_chain(&vt_notifier_list, VT_ALLOCATE, ¶m); return 0; err_free: visual_deinit(vc); kfree(vc); vc_cons[currcons].d = NULL; return err; } static inline int resize_screen(struct vc_data *vc, int width, int height, bool from_user) { /* Resizes the resolution of the display adapater */ int err = 0; if (vc->vc_sw->con_resize) err = vc->vc_sw->con_resize(vc, width, height, from_user); return err; } /** * vc_do_resize - resizing method for the tty * @tty: tty being resized * @vc: virtual console private data * @cols: columns * @lines: lines * @from_user: invoked by a user? * * Resize a virtual console, clipping according to the actual constraints. If * the caller passes a tty structure then update the termios winsize * information and perform any necessary signal handling. * * Locking: Caller must hold the console semaphore. Takes the termios rwsem and * ctrl.lock of the tty IFF a tty is passed. */ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc, unsigned int cols, unsigned int lines, bool from_user) { unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0; unsigned long end; unsigned int old_rows, old_row_size, first_copied_row; unsigned int new_cols, new_rows, new_row_size, new_screen_size; unsigned short *oldscreen, *newscreen; u32 **new_uniscr = NULL; WARN_CONSOLE_UNLOCKED(); if (cols > VC_MAXCOL || lines > VC_MAXROW) return -EINVAL; new_cols = (cols ? cols : vc->vc_cols); new_rows = (lines ? lines : vc->vc_rows); new_row_size = new_cols << 1; new_screen_size = new_row_size * new_rows; if (new_cols == vc->vc_cols && new_rows == vc->vc_rows) { /* * This function is being called here to cover the case * where the userspace calls the FBIOPUT_VSCREENINFO twice, * passing the same fb_var_screeninfo containing the fields * yres/xres equal to a number non-multiple of vc_font.height * and yres_virtual/xres_virtual equal to number lesser than the * vc_font.height and yres/xres. * In the second call, the struct fb_var_screeninfo isn't * being modified by the underlying driver because of the * if above, and this causes the fbcon_display->vrows to become * negative and it eventually leads to out-of-bound * access by the imageblit function. * To give the correct values to the struct and to not have * to deal with possible errors from the code below, we call * the resize_screen here as well. */ return resize_screen(vc, new_cols, new_rows, from_user); } if (new_screen_size > KMALLOC_MAX_SIZE || !new_screen_size) return -EINVAL; newscreen = kzalloc(new_screen_size, GFP_USER); if (!newscreen) return -ENOMEM; if (vc->vc_uni_lines) { new_uniscr = vc_uniscr_alloc(new_cols, new_rows); if (!new_uniscr) { kfree(newscreen); return -ENOMEM; } } if (vc_is_sel(vc)) clear_selection(); old_rows = vc->vc_rows; old_row_size = vc->vc_size_row; err = resize_screen(vc, new_cols, new_rows, from_user); if (err) { kfree(newscreen); vc_uniscr_free(new_uniscr); return err; } vc->vc_rows = new_rows; vc->vc_cols = new_cols; vc->vc_size_row = new_row_size; vc->vc_screenbuf_size = new_screen_size; rlth = min(old_row_size, new_row_size); rrem = new_row_size - rlth; old_origin = vc->vc_origin; new_origin = (long) newscreen; new_scr_end = new_origin + new_screen_size; if (vc->state.y > new_rows) { if (old_rows - vc->state.y < new_rows) { /* * Cursor near the bottom, copy contents from the * bottom of buffer */ first_copied_row = (old_rows - new_rows); } else { /* * Cursor is in no man's land, copy 1/2 screenful * from the top and bottom of cursor position */ first_copied_row = (vc->state.y - new_rows/2); } old_origin += first_copied_row * old_row_size; } else first_copied_row = 0; end = old_origin + old_row_size * min(old_rows, new_rows); vc_uniscr_copy_area(new_uniscr, new_cols, new_rows, vc->vc_uni_lines, rlth/2, first_copied_row, min(old_rows, new_rows)); vc_uniscr_set(vc, new_uniscr); update_attr(vc); while (old_origin < end) { scr_memcpyw((unsigned short *) new_origin, (unsigned short *) old_origin, rlth); if (rrem) scr_memsetw((void *)(new_origin + rlth), vc->vc_video_erase_char, rrem); old_origin += old_row_size; new_origin += new_row_size; } if (new_scr_end > new_origin) scr_memsetw((void *)new_origin, vc->vc_video_erase_char, new_scr_end - new_origin); oldscreen = vc->vc_screenbuf; vc->vc_screenbuf = newscreen; vc->vc_screenbuf_size = new_screen_size; set_origin(vc); kfree(oldscreen); /* do part of a reset_terminal() */ vc->vc_top = 0; vc->vc_bottom = vc->vc_rows; gotoxy(vc, vc->state.x, vc->state.y); save_cur(vc); if (tty) { /* Rewrite the requested winsize data with the actual resulting sizes */ struct winsize ws; memset(&ws, 0, sizeof(ws)); ws.ws_row = vc->vc_rows; ws.ws_col = vc->vc_cols; ws.ws_ypixel = vc->vc_scan_lines; tty_do_resize(tty, &ws); } if (con_is_visible(vc)) update_screen(vc); vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num); notify_update(vc); return err; } /** * __vc_resize - resize a VT * @vc: virtual console * @cols: columns * @rows: rows * @from_user: invoked by a user? * * Resize a virtual console as seen from the console end of things. We use the * common vc_do_resize() method to update the structures. * * Locking: The caller must hold the console sem to protect console internals * and @vc->port.tty. */ int __vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows, bool from_user) { return vc_do_resize(vc->port.tty, vc, cols, rows, from_user); } EXPORT_SYMBOL(__vc_resize); /** * vt_resize - resize a VT * @tty: tty to resize * @ws: winsize attributes * * Resize a virtual terminal. This is called by the tty layer as we register * our own handler for resizing. The mutual helper does all the actual work. * * Locking: Takes the console sem and the called methods then take the tty * termios_rwsem and the tty ctrl.lock in that order. */ static int vt_resize(struct tty_struct *tty, struct winsize *ws) { struct vc_data *vc = tty->driver_data; int ret; console_lock(); ret = vc_do_resize(tty, vc, ws->ws_col, ws->ws_row, false); console_unlock(); return ret; } struct vc_data *vc_deallocate(unsigned int currcons) { struct vc_data *vc = NULL; WARN_CONSOLE_UNLOCKED(); if (vc_cons_allocated(currcons)) { struct vt_notifier_param param; param.vc = vc = vc_cons[currcons].d; atomic_notifier_call_chain(&vt_notifier_list, VT_DEALLOCATE, ¶m); vcs_remove_sysfs(currcons); visual_deinit(vc); con_free_unimap(vc); put_pid(vc->vt_pid); vc_uniscr_set(vc, NULL); kfree(vc->vc_screenbuf); vc_cons[currcons].d = NULL; } return vc; } /* * VT102 emulator */ enum { EPecma = 0, EPdec, EPeq, EPgt, EPlt}; #define set_kbd(vc, x) vt_set_kbd_mode_bit((vc)->vc_num, (x)) #define clr_kbd(vc, x) vt_clr_kbd_mode_bit((vc)->vc_num, (x)) #define is_kbd(vc, x) vt_get_kbd_mode_bit((vc)->vc_num, (x)) #define decarm VC_REPEAT #define decckm VC_CKMODE #define kbdapplic VC_APPLIC #define lnm VC_CRLF const unsigned char color_table[] = { 0, 4, 2, 6, 1, 5, 3, 7, 8,12,10,14, 9,13,11,15 }; EXPORT_SYMBOL(color_table); /* the default colour table, for VGA+ colour systems */ unsigned char default_red[] = { 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x55, 0xff, 0x55, 0xff, 0x55, 0xff, 0x55, 0xff }; module_param_array(default_red, byte, NULL, S_IRUGO | S_IWUSR); EXPORT_SYMBOL(default_red); unsigned char default_grn[] = { 0x00, 0x00, 0xaa, 0x55, 0x00, 0x00, 0xaa, 0xaa, 0x55, 0x55, 0xff, 0xff, 0x55, 0x55, 0xff, 0xff }; module_param_array(default_grn, byte, NULL, S_IRUGO | S_IWUSR); EXPORT_SYMBOL(default_grn); unsigned char default_blu[] = { 0x00, 0x00, 0x00, 0x00, 0xaa, 0xaa, 0xaa, 0xaa, 0x55, 0x55, 0x55, 0x55, 0xff, 0xff, 0xff, 0xff }; module_param_array(default_blu, byte, NULL, S_IRUGO | S_IWUSR); EXPORT_SYMBOL(default_blu); /* * gotoxy() must verify all boundaries, because the arguments * might also be negative. If the given position is out of * bounds, the cursor is placed at the nearest margin. */ static void gotoxy(struct vc_data *vc, int new_x, int new_y) { int min_y, max_y; if (new_x < 0) vc->state.x = 0; else { if (new_x >= vc->vc_cols) vc->state.x = vc->vc_cols - 1; else vc->state.x = new_x; } if (vc->vc_decom) { min_y = vc->vc_top; max_y = vc->vc_bottom; } else { min_y = 0; max_y = vc->vc_rows; } if (new_y < min_y) vc->state.y = min_y; else if (new_y >= max_y) vc->state.y = max_y - 1; else vc->state.y = new_y; vc->vc_pos = vc->vc_origin + vc->state.y * vc->vc_size_row + (vc->state.x << 1); vc->vc_need_wrap = 0; } /* for absolute user moves, when decom is set */ static void gotoxay(struct vc_data *vc, int new_x, int new_y) { gotoxy(vc, new_x, vc->vc_decom ? (vc->vc_top + new_y) : new_y); } void scrollback(struct vc_data *vc) { scrolldelta(-(vc->vc_rows / 2)); } void scrollfront(struct vc_data *vc, int lines) { if (!lines) lines = vc->vc_rows / 2; scrolldelta(lines); } static void lf(struct vc_data *vc) { /* don't scroll if above bottom of scrolling region, or * if below scrolling region */ if (vc->state.y + 1 == vc->vc_bottom) con_scroll(vc, vc->vc_top, vc->vc_bottom, SM_UP, 1); else if (vc->state.y < vc->vc_rows - 1) { vc->state.y++; vc->vc_pos += vc->vc_size_row; } vc->vc_need_wrap = 0; notify_write(vc, '\n'); } static void ri(struct vc_data *vc) { /* don't scroll if below top of scrolling region, or * if above scrolling region */ if (vc->state.y == vc->vc_top) con_scroll(vc, vc->vc_top, vc->vc_bottom, SM_DOWN, 1); else if (vc->state.y > 0) { vc->state.y--; vc->vc_pos -= vc->vc_size_row; } vc->vc_need_wrap = 0; } static inline void cr(struct vc_data *vc) { vc->vc_pos -= vc->state.x << 1; vc->vc_need_wrap = vc->state.x = 0; notify_write(vc, '\r'); } static inline void bs(struct vc_data *vc) { if (vc->state.x) { vc->vc_pos -= 2; vc->state.x--; vc->vc_need_wrap = 0; notify_write(vc, '\b'); } } static inline void del(struct vc_data *vc) { /* ignored */ } enum CSI_J { CSI_J_CURSOR_TO_END = 0, CSI_J_START_TO_CURSOR = 1, CSI_J_VISIBLE = 2, CSI_J_FULL = 3, }; static void csi_J(struct vc_data *vc, enum CSI_J vpar) { unsigned short *start; unsigned int count; switch (vpar) { case CSI_J_CURSOR_TO_END: vc_uniscr_clear_line(vc, vc->state.x, vc->vc_cols - vc->state.x); vc_uniscr_clear_lines(vc, vc->state.y + 1, vc->vc_rows - vc->state.y - 1); count = (vc->vc_scr_end - vc->vc_pos) >> 1; start = (unsigned short *)vc->vc_pos; break; case CSI_J_START_TO_CURSOR: vc_uniscr_clear_line(vc, 0, vc->state.x + 1); vc_uniscr_clear_lines(vc, 0, vc->state.y); count = ((vc->vc_pos - vc->vc_origin) >> 1) + 1; start = (unsigned short *)vc->vc_origin; break; case CSI_J_FULL: flush_scrollback(vc); fallthrough; case CSI_J_VISIBLE: vc_uniscr_clear_lines(vc, 0, vc->vc_rows); count = vc->vc_cols * vc->vc_rows; start = (unsigned short *)vc->vc_origin; break; default: return; } scr_memsetw(start, vc->vc_video_erase_char, 2 * count); if (con_should_update(vc)) do_update_region(vc, (unsigned long) start, count); vc->vc_need_wrap = 0; } enum { CSI_K_CURSOR_TO_LINEEND = 0, CSI_K_LINESTART_TO_CURSOR = 1, CSI_K_LINE = 2, }; static void csi_K(struct vc_data *vc) { unsigned int count; unsigned short *start = (unsigned short *)vc->vc_pos; int offset; switch (vc->vc_par[0]) { case CSI_K_CURSOR_TO_LINEEND: offset = 0; count = vc->vc_cols - vc->state.x; break; case CSI_K_LINESTART_TO_CURSOR: offset = -vc->state.x; count = vc->state.x + 1; break; case CSI_K_LINE: offset = -vc->state.x; count = vc->vc_cols; break; default: return; } vc_uniscr_clear_line(vc, vc->state.x + offset, count); scr_memsetw(start + offset, vc->vc_video_erase_char, 2 * count); vc->vc_need_wrap = 0; if (con_should_update(vc)) do_update_region(vc, (unsigned long)(start + offset), count); } /* erase the following count positions */ static void csi_X(struct vc_data *vc) { /* not vt100? */ unsigned int count = clamp(vc->vc_par[0], 1, vc->vc_cols - vc->state.x); vc_uniscr_clear_line(vc, vc->state.x, count); scr_memsetw((unsigned short *)vc->vc_pos, vc->vc_video_erase_char, 2 * count); if (con_should_update(vc)) vc->vc_sw->con_clear(vc, vc->state.y, vc->state.x, count); vc->vc_need_wrap = 0; } static void default_attr(struct vc_data *vc) { vc->state.intensity = VCI_NORMAL; vc->state.italic = false; vc->state.underline = false; vc->state.reverse = false; vc->state.blink = false; vc->state.color = vc->vc_def_color; } struct rgb { u8 r; u8 g; u8 b; }; static void rgb_from_256(unsigned int i, struct rgb *c) { if (i < 8) { /* Standard colours. */ c->r = i&1 ? 0xaa : 0x00; c->g = i&2 ? 0xaa : 0x00; c->b = i&4 ? 0xaa : 0x00; } else if (i < 16) { c->r = i&1 ? 0xff : 0x55; c->g = i&2 ? 0xff : 0x55; c->b = i&4 ? 0xff : 0x55; } else if (i < 232) { /* 6x6x6 colour cube. */ i -= 16; c->b = i % 6 * 255 / 6; i /= 6; c->g = i % 6 * 255 / 6; i /= 6; c->r = i * 255 / 6; } else /* Grayscale ramp. */ c->r = c->g = c->b = i * 10 - 2312; } static void rgb_foreground(struct vc_data *vc, const struct rgb *c) { u8 hue = 0, max = max3(c->r, c->g, c->b); if (c->r > max / 2) hue |= 4; if (c->g > max / 2) hue |= 2; if (c->b > max / 2) hue |= 1; if (hue == 7 && max <= 0x55) { hue = 0; vc->state.intensity = VCI_BOLD; } else if (max > 0xaa) vc->state.intensity = VCI_BOLD; else vc->state.intensity = VCI_NORMAL; vc->state.color = (vc->state.color & 0xf0) | hue; } static void rgb_background(struct vc_data *vc, const struct rgb *c) { /* For backgrounds, err on the dark side. */ vc->state.color = (vc->state.color & 0x0f) | (c->r&0x80) >> 1 | (c->g&0x80) >> 2 | (c->b&0x80) >> 3; } /* * ITU T.416 Higher colour modes. They break the usual properties of SGR codes * and thus need to be detected and ignored by hand. That standard also * wants : rather than ; as separators but sequences containing : are currently * completely ignored by the parser. * * Subcommands 3 (CMY) and 4 (CMYK) are so insane there's no point in * supporting them. */ static int vc_t416_color(struct vc_data *vc, int i, void(*set_color)(struct vc_data *vc, const struct rgb *c)) { struct rgb c; i++; if (i > vc->vc_npar) return i; if (vc->vc_par[i] == 5 && i + 1 <= vc->vc_npar) { /* 256 colours */ i++; rgb_from_256(vc->vc_par[i], &c); } else if (vc->vc_par[i] == 2 && i + 3 <= vc->vc_npar) { /* 24 bit */ c.r = vc->vc_par[i + 1]; c.g = vc->vc_par[i + 2]; c.b = vc->vc_par[i + 3]; i += 3; } else return i; set_color(vc, &c); return i; } enum { CSI_m_DEFAULT = 0, CSI_m_BOLD = 1, CSI_m_HALF_BRIGHT = 2, CSI_m_ITALIC = 3, CSI_m_UNDERLINE = 4, CSI_m_BLINK = 5, CSI_m_REVERSE = 7, CSI_m_PRI_FONT = 10, CSI_m_ALT_FONT1 = 11, CSI_m_ALT_FONT2 = 12, CSI_m_DOUBLE_UNDERLINE = 21, CSI_m_NORMAL_INTENSITY = 22, CSI_m_NO_ITALIC = 23, CSI_m_NO_UNDERLINE = 24, CSI_m_NO_BLINK = 25, CSI_m_NO_REVERSE = 27, CSI_m_FG_COLOR_BEG = 30, CSI_m_FG_COLOR_END = 37, CSI_m_FG_COLOR = 38, CSI_m_DEFAULT_FG_COLOR = 39, CSI_m_BG_COLOR_BEG = 40, CSI_m_BG_COLOR_END = 47, CSI_m_BG_COLOR = 48, CSI_m_DEFAULT_BG_COLOR = 49, CSI_m_BRIGHT_FG_COLOR_BEG = 90, CSI_m_BRIGHT_FG_COLOR_END = 97, CSI_m_BRIGHT_FG_COLOR_OFF = CSI_m_BRIGHT_FG_COLOR_BEG - CSI_m_FG_COLOR_BEG, CSI_m_BRIGHT_BG_COLOR_BEG = 100, CSI_m_BRIGHT_BG_COLOR_END = 107, CSI_m_BRIGHT_BG_COLOR_OFF = CSI_m_BRIGHT_BG_COLOR_BEG - CSI_m_BG_COLOR_BEG, }; /* console_lock is held */ static void csi_m(struct vc_data *vc) { int i; for (i = 0; i <= vc->vc_npar; i++) switch (vc->vc_par[i]) { case CSI_m_DEFAULT: /* all attributes off */ default_attr(vc); break; case CSI_m_BOLD: vc->state.intensity = VCI_BOLD; break; case CSI_m_HALF_BRIGHT: vc->state.intensity = VCI_HALF_BRIGHT; break; case CSI_m_ITALIC: vc->state.italic = true; break; case CSI_m_DOUBLE_UNDERLINE: /* * No console drivers support double underline, so * convert it to a single underline. */ case CSI_m_UNDERLINE: vc->state.underline = true; break; case CSI_m_BLINK: vc->state.blink = true; break; case CSI_m_REVERSE: vc->state.reverse = true; break; case CSI_m_PRI_FONT: /* ANSI X3.64-1979 (SCO-ish?) * Select primary font, don't display control chars if * defined, don't set bit 8 on output. */ vc->vc_translate = set_translate(vc->state.Gx_charset[vc->state.charset], vc); vc->vc_disp_ctrl = 0; vc->vc_toggle_meta = 0; break; case CSI_m_ALT_FONT1: /* ANSI X3.64-1979 (SCO-ish?) * Select first alternate font, lets chars < 32 be * displayed as ROM chars. */ vc->vc_translate = set_translate(IBMPC_MAP, vc); vc->vc_disp_ctrl = 1; vc->vc_toggle_meta = 0; break; case CSI_m_ALT_FONT2: /* ANSI X3.64-1979 (SCO-ish?) * Select second alternate font, toggle high bit * before displaying as ROM char. */ vc->vc_translate = set_translate(IBMPC_MAP, vc); vc->vc_disp_ctrl = 1; vc->vc_toggle_meta = 1; break; case CSI_m_NORMAL_INTENSITY: vc->state.intensity = VCI_NORMAL; break; case CSI_m_NO_ITALIC: vc->state.italic = false; break; case CSI_m_NO_UNDERLINE: vc->state.underline = false; break; case CSI_m_NO_BLINK: vc->state.blink = false; break; case CSI_m_NO_REVERSE: vc->state.reverse = false; break; case CSI_m_FG_COLOR: i = vc_t416_color(vc, i, rgb_foreground); break; case CSI_m_BG_COLOR: i = vc_t416_color(vc, i, rgb_background); break; case CSI_m_DEFAULT_FG_COLOR: vc->state.color = (vc->vc_def_color & 0x0f) | (vc->state.color & 0xf0); break; case CSI_m_DEFAULT_BG_COLOR: vc->state.color = (vc->vc_def_color & 0xf0) | (vc->state.color & 0x0f); break; case CSI_m_BRIGHT_FG_COLOR_BEG ... CSI_m_BRIGHT_FG_COLOR_END: vc->state.intensity = VCI_BOLD; vc->vc_par[i] -= CSI_m_BRIGHT_FG_COLOR_OFF; fallthrough; case CSI_m_FG_COLOR_BEG ... CSI_m_FG_COLOR_END: vc->vc_par[i] -= CSI_m_FG_COLOR_BEG; vc->state.color = color_table[vc->vc_par[i]] | (vc->state.color & 0xf0); break; case CSI_m_BRIGHT_BG_COLOR_BEG ... CSI_m_BRIGHT_BG_COLOR_END: vc->vc_par[i] -= CSI_m_BRIGHT_BG_COLOR_OFF; fallthrough; case CSI_m_BG_COLOR_BEG ... CSI_m_BG_COLOR_END: vc->vc_par[i] -= CSI_m_BG_COLOR_BEG; vc->state.color = (color_table[vc->vc_par[i]] << 4) | (vc->state.color & 0x0f); break; } update_attr(vc); } static void respond_string(const char *p, size_t len, struct tty_port *port) { tty_insert_flip_string(port, p, len); tty_flip_buffer_push(port); } static void cursor_report(struct vc_data *vc, struct tty_struct *tty) { char buf[40]; int len; len = sprintf(buf, "\033[%d;%dR", vc->state.y + (vc->vc_decom ? vc->vc_top + 1 : 1), vc->state.x + 1); respond_string(buf, len, tty->port); } static inline void status_report(struct tty_struct *tty) { static const char teminal_ok[] = "\033[0n"; respond_string(teminal_ok, strlen(teminal_ok), tty->port); } static inline void respond_ID(struct tty_struct *tty) { /* terminal answer to an ESC-Z or csi0c query. */ static const char vt102_id[] = "\033[?6c"; respond_string(vt102_id, strlen(vt102_id), tty->port); } void mouse_report(struct tty_struct *tty, int butt, int mrx, int mry) { char buf[8]; int len; len = sprintf(buf, "\033[M%c%c%c", (char)(' ' + butt), (char)('!' + mrx), (char)('!' + mry)); respond_string(buf, len, tty->port); } /* invoked via ioctl(TIOCLINUX) and through set_selection_user */ int mouse_reporting(void) { return vc_cons[fg_console].d->vc_report_mouse; } enum { CSI_DEC_hl_CURSOR_KEYS = 1, /* CKM: cursor keys send ^[Ox/^[[x */ CSI_DEC_hl_132_COLUMNS = 3, /* COLM: 80/132 mode switch */ CSI_DEC_hl_REVERSE_VIDEO = 5, /* SCNM */ CSI_DEC_hl_ORIGIN_MODE = 6, /* OM: origin relative/absolute */ CSI_DEC_hl_AUTOWRAP = 7, /* AWM */ CSI_DEC_hl_AUTOREPEAT = 8, /* ARM */ CSI_DEC_hl_MOUSE_X10 = 9, CSI_DEC_hl_SHOW_CURSOR = 25, /* TCEM */ CSI_DEC_hl_MOUSE_VT200 = 1000, }; /* console_lock is held */ static void csi_DEC_hl(struct vc_data *vc, bool on_off) { unsigned int i; for (i = 0; i <= vc->vc_npar; i++) switch (vc->vc_par[i]) { case CSI_DEC_hl_CURSOR_KEYS: if (on_off) set_kbd(vc, decckm); else clr_kbd(vc, decckm); break; case CSI_DEC_hl_132_COLUMNS: /* unimplemented */ #if 0 vc_resize(deccolm ? 132 : 80, vc->vc_rows); /* this alone does not suffice; some user mode utility has to change the hardware regs */ #endif break; case CSI_DEC_hl_REVERSE_VIDEO: if (vc->vc_decscnm != on_off) { vc->vc_decscnm = on_off; invert_screen(vc, 0, vc->vc_screenbuf_size, false); update_attr(vc); } break; case CSI_DEC_hl_ORIGIN_MODE: vc->vc_decom = on_off; gotoxay(vc, 0, 0); break; case CSI_DEC_hl_AUTOWRAP: vc->vc_decawm = on_off; break; case CSI_DEC_hl_AUTOREPEAT: if (on_off) set_kbd(vc, decarm); else clr_kbd(vc, decarm); break; case CSI_DEC_hl_MOUSE_X10: vc->vc_report_mouse = on_off ? 1 : 0; break; case CSI_DEC_hl_SHOW_CURSOR: vc->vc_deccm = on_off; break; case CSI_DEC_hl_MOUSE_VT200: vc->vc_report_mouse = on_off ? 2 : 0; break; } } enum { CSI_hl_DISPLAY_CTRL = 3, /* handle ansi control chars */ CSI_hl_INSERT = 4, /* IRM: insert/replace */ CSI_hl_AUTO_NL = 20, /* LNM: Enter == CrLf/Lf */ }; /* console_lock is held */ static void csi_hl(struct vc_data *vc, bool on_off) { unsigned int i; for (i = 0; i <= vc->vc_npar; i++) switch (vc->vc_par[i]) { /* ANSI modes set/reset */ case CSI_hl_DISPLAY_CTRL: vc->vc_disp_ctrl = on_off; break; case CSI_hl_INSERT: vc->vc_decim = on_off; break; case CSI_hl_AUTO_NL: if (on_off) set_kbd(vc, lnm); else clr_kbd(vc, lnm); break; } } enum CSI_right_square_bracket { CSI_RSB_COLOR_FOR_UNDERLINE = 1, CSI_RSB_COLOR_FOR_HALF_BRIGHT = 2, CSI_RSB_MAKE_CUR_COLOR_DEFAULT = 8, CSI_RSB_BLANKING_INTERVAL = 9, CSI_RSB_BELL_FREQUENCY = 10, CSI_RSB_BELL_DURATION = 11, CSI_RSB_BRING_CONSOLE_TO_FRONT = 12, CSI_RSB_UNBLANK = 13, CSI_RSB_VESA_OFF_INTERVAL = 14, CSI_RSB_BRING_PREV_CONSOLE_TO_FRONT = 15, CSI_RSB_CURSOR_BLINK_INTERVAL = 16, }; /* * csi_RSB - csi+] (Right Square Bracket) handler * * These are linux console private sequences. * * console_lock is held */ static void csi_RSB(struct vc_data *vc) { switch (vc->vc_par[0]) { case CSI_RSB_COLOR_FOR_UNDERLINE: if (vc->vc_can_do_color && vc->vc_par[1] < 16) { vc->vc_ulcolor = color_table[vc->vc_par[1]]; if (vc->state.underline) update_attr(vc); } break; case CSI_RSB_COLOR_FOR_HALF_BRIGHT: if (vc->vc_can_do_color && vc->vc_par[1] < 16) { vc->vc_halfcolor = color_table[vc->vc_par[1]]; if (vc->state.intensity == VCI_HALF_BRIGHT) update_attr(vc); } break; case CSI_RSB_MAKE_CUR_COLOR_DEFAULT: vc->vc_def_color = vc->vc_attr; if (vc->vc_hi_font_mask == 0x100) vc->vc_def_color >>= 1; default_attr(vc); update_attr(vc); break; case CSI_RSB_BLANKING_INTERVAL: blankinterval = min(vc->vc_par[1], 60U) * 60; poke_blanked_console(); break; case CSI_RSB_BELL_FREQUENCY: if (vc->vc_npar >= 1) vc->vc_bell_pitch = vc->vc_par[1]; else vc->vc_bell_pitch = DEFAULT_BELL_PITCH; break; case CSI_RSB_BELL_DURATION: if (vc->vc_npar >= 1) vc->vc_bell_duration = (vc->vc_par[1] < 2000) ? msecs_to_jiffies(vc->vc_par[1]) : 0; else vc->vc_bell_duration = DEFAULT_BELL_DURATION; break; case CSI_RSB_BRING_CONSOLE_TO_FRONT: if (vc->vc_par[1] >= 1 && vc_cons_allocated(vc->vc_par[1] - 1)) set_console(vc->vc_par[1] - 1); break; case CSI_RSB_UNBLANK: poke_blanked_console(); break; case CSI_RSB_VESA_OFF_INTERVAL: vesa_off_interval = min(vc->vc_par[1], 60U) * 60 * HZ; break; case CSI_RSB_BRING_PREV_CONSOLE_TO_FRONT: set_console(last_console); break; case CSI_RSB_CURSOR_BLINK_INTERVAL: if (vc->vc_npar >= 1 && vc->vc_par[1] >= 50 && vc->vc_par[1] <= USHRT_MAX) vc->vc_cur_blink_ms = vc->vc_par[1]; else vc->vc_cur_blink_ms = DEFAULT_CURSOR_BLINK_MS; break; } } /* console_lock is held */ static void csi_at(struct vc_data *vc, unsigned int nr) { nr = clamp(nr, 1, vc->vc_cols - vc->state.x); insert_char(vc, nr); } /* console_lock is held */ static void csi_L(struct vc_data *vc) { unsigned int nr = clamp(vc->vc_par[0], 1, vc->vc_rows - vc->state.y); con_scroll(vc, vc->state.y, vc->vc_bottom, SM_DOWN, nr); vc->vc_need_wrap = 0; } /* console_lock is held */ static void csi_P(struct vc_data *vc) { unsigned int nr = clamp(vc->vc_par[0], 1, vc->vc_cols - vc->state.x); delete_char(vc, nr); } /* console_lock is held */ static void csi_M(struct vc_data *vc) { unsigned int nr = clamp(vc->vc_par[0], 1, vc->vc_rows - vc->state.y); con_scroll(vc, vc->state.y, vc->vc_bottom, SM_UP, nr); vc->vc_need_wrap = 0; } /* console_lock is held (except via vc_init->reset_terminal */ static void save_cur(struct vc_data *vc) { memcpy(&vc->saved_state, &vc->state, sizeof(vc->state)); } /* console_lock is held */ static void restore_cur(struct vc_data *vc) { memcpy(&vc->state, &vc->saved_state, sizeof(vc->state)); gotoxy(vc, vc->state.x, vc->state.y); vc->vc_translate = set_translate(vc->state.Gx_charset[vc->state.charset], vc); update_attr(vc); vc->vc_need_wrap = 0; } /** * enum vc_ctl_state - control characters state of a vt * * @ESnormal: initial state, no control characters parsed * @ESesc: ESC parsed * @ESsquare: CSI parsed -- modifiers/parameters/ctrl chars expected * @ESgetpars: CSI parsed -- parameters/ctrl chars expected * @ESfunckey: CSI [ parsed * @EShash: ESC # parsed * @ESsetG0: ESC ( parsed * @ESsetG1: ESC ) parsed * @ESpercent: ESC % parsed * @EScsiignore: CSI [0x20-0x3f] parsed * @ESnonstd: OSC parsed * @ESpalette: OSC P parsed * @ESosc: OSC [0-9] parsed * @ESANSI_first: first state for ignoring ansi control sequences * @ESapc: ESC _ parsed * @ESpm: ESC ^ parsed * @ESdcs: ESC P parsed * @ESANSI_last: last state for ignoring ansi control sequences */ enum vc_ctl_state { ESnormal, ESesc, ESsquare, ESgetpars, ESfunckey, EShash, ESsetG0, ESsetG1, ESpercent, EScsiignore, ESnonstd, ESpalette, ESosc, ESANSI_first = ESosc, ESapc, ESpm, ESdcs, ESANSI_last = ESdcs, }; /* console_lock is held (except via vc_init()) */ static void reset_terminal(struct vc_data *vc, int do_clear) { unsigned int i; vc->vc_top = 0; vc->vc_bottom = vc->vc_rows; vc->vc_state = ESnormal; vc->vc_priv = EPecma; vc->vc_translate = set_translate(LAT1_MAP, vc); vc->state.Gx_charset[0] = LAT1_MAP; vc->state.Gx_charset[1] = GRAF_MAP; vc->state.charset = 0; vc->vc_need_wrap = 0; vc->vc_report_mouse = 0; vc->vc_utf = default_utf8; vc->vc_utf_count = 0; vc->vc_disp_ctrl = 0; vc->vc_toggle_meta = 0; vc->vc_decscnm = 0; vc->vc_decom = 0; vc->vc_decawm = 1; vc->vc_deccm = global_cursor_default; vc->vc_decim = 0; vt_reset_keyboard(vc->vc_num); vc->vc_cursor_type = cur_default; vc->vc_complement_mask = vc->vc_s_complement_mask; default_attr(vc); update_attr(vc); bitmap_zero(vc->vc_tab_stop, VC_TABSTOPS_COUNT); for (i = 0; i < VC_TABSTOPS_COUNT; i += 8) set_bit(i, vc->vc_tab_stop); vc->vc_bell_pitch = DEFAULT_BELL_PITCH; vc->vc_bell_duration = DEFAULT_BELL_DURATION; vc->vc_cur_blink_ms = DEFAULT_CURSOR_BLINK_MS; gotoxy(vc, 0, 0); save_cur(vc); if (do_clear) csi_J(vc, CSI_J_VISIBLE); } static void vc_setGx(struct vc_data *vc, unsigned int which, u8 c) { unsigned char *charset = &vc->state.Gx_charset[which]; switch (c) { case '0': *charset = GRAF_MAP; break; case 'B': *charset = LAT1_MAP; break; case 'U': *charset = IBMPC_MAP; break; case 'K': *charset = USER_MAP; break; } if (vc->state.charset == which) vc->vc_translate = set_translate(*charset, vc); } static bool ansi_control_string(enum vc_ctl_state state) { return state >= ESANSI_first && state <= ESANSI_last; } enum { ASCII_NULL = 0, ASCII_BELL = 7, ASCII_BACKSPACE = 8, ASCII_IGNORE_FIRST = ASCII_BACKSPACE, ASCII_HTAB = 9, ASCII_LINEFEED = 10, ASCII_VTAB = 11, ASCII_FORMFEED = 12, ASCII_CAR_RET = 13, ASCII_IGNORE_LAST = ASCII_CAR_RET, ASCII_SHIFTOUT = 14, ASCII_SHIFTIN = 15, ASCII_CANCEL = 24, ASCII_SUBSTITUTE = 26, ASCII_ESCAPE = 27, ASCII_CSI_IGNORE_FIRST = ' ', /* 0x2x, 0x3a and 0x3c - 0x3f */ ASCII_CSI_IGNORE_LAST = '?', ASCII_DEL = 127, ASCII_EXT_CSI = 128 + ASCII_ESCAPE, }; /* * Handle ascii characters in control sequences and change states accordingly. * E.g. ESC sets the state of vc to ESesc. * * Returns: true if @c handled. */ static bool handle_ascii(struct tty_struct *tty, struct vc_data *vc, u8 c) { switch (c) { case ASCII_NULL: return true; case ASCII_BELL: if (ansi_control_string(vc->vc_state)) vc->vc_state = ESnormal; else if (vc->vc_bell_duration) kd_mksound(vc->vc_bell_pitch, vc->vc_bell_duration); return true; case ASCII_BACKSPACE: bs(vc); return true; case ASCII_HTAB: vc->vc_pos -= (vc->state.x << 1); vc->state.x = find_next_bit(vc->vc_tab_stop, min(vc->vc_cols - 1, VC_TABSTOPS_COUNT), vc->state.x + 1); if (vc->state.x >= VC_TABSTOPS_COUNT) vc->state.x = vc->vc_cols - 1; vc->vc_pos += (vc->state.x << 1); notify_write(vc, '\t'); return true; case ASCII_LINEFEED: case ASCII_VTAB: case ASCII_FORMFEED: lf(vc); if (!is_kbd(vc, lnm)) return true; fallthrough; case ASCII_CAR_RET: cr(vc); return true; case ASCII_SHIFTOUT: vc->state.charset = 1; vc->vc_translate = set_translate(vc->state.Gx_charset[1], vc); vc->vc_disp_ctrl = 1; return true; case ASCII_SHIFTIN: vc->state.charset = 0; vc->vc_translate = set_translate(vc->state.Gx_charset[0], vc); vc->vc_disp_ctrl = 0; return true; case ASCII_CANCEL: case ASCII_SUBSTITUTE: vc->vc_state = ESnormal; return true; case ASCII_ESCAPE: vc->vc_state = ESesc; return true; case ASCII_DEL: del(vc); return true; case ASCII_EXT_CSI: vc->vc_state = ESsquare; return true; } return false; } /* * Handle a character (@c) following an ESC (when @vc is in the ESesc state). * E.g. previous ESC with @c == '[' here yields the ESsquare state (that is: * CSI). */ static void handle_esc(struct tty_struct *tty, struct vc_data *vc, u8 c) { vc->vc_state = ESnormal; switch (c) { case '[': vc->vc_state = ESsquare; break; case ']': vc->vc_state = ESnonstd; break; case '_': vc->vc_state = ESapc; break; case '^': vc->vc_state = ESpm; break; case '%': vc->vc_state = ESpercent; break; case 'E': cr(vc); lf(vc); break; case 'M': ri(vc); break; case 'D': lf(vc); break; case 'H': if (vc->state.x < VC_TABSTOPS_COUNT) set_bit(vc->state.x, vc->vc_tab_stop); break; case 'P': vc->vc_state = ESdcs; break; case 'Z': respond_ID(tty); break; case '7': save_cur(vc); break; case '8': restore_cur(vc); break; case '(': vc->vc_state = ESsetG0; break; case ')': vc->vc_state = ESsetG1; break; case '#': vc->vc_state = EShash; break; case 'c': reset_terminal(vc, 1); break; case '>': /* Numeric keypad */ clr_kbd(vc, kbdapplic); break; case '=': /* Appl. keypad */ set_kbd(vc, kbdapplic); break; } } /* * Handle special DEC control sequences ("ESC [ ? parameters char"). Parameters * are in @vc->vc_par and the char is in @c here. */ static void csi_DEC(struct tty_struct *tty, struct vc_data *vc, u8 c) { switch (c) { case 'h': csi_DEC_hl(vc, true); break; case 'l': csi_DEC_hl(vc, false); break; case 'c': if (vc->vc_par[0]) vc->vc_cursor_type = CUR_MAKE(vc->vc_par[0], vc->vc_par[1], vc->vc_par[2]); else vc->vc_cursor_type = cur_default; break; case 'm': clear_selection(); if (vc->vc_par[0]) vc->vc_complement_mask = vc->vc_par[0] << 8 | vc->vc_par[1]; else vc->vc_complement_mask = vc->vc_s_complement_mask; break; case 'n': if (vc->vc_par[0] == 5) status_report(tty); else if (vc->vc_par[0] == 6) cursor_report(vc, tty); break; } } /* * Handle Control Sequence Introducer control characters. That is * "ESC [ parameters char". Parameters are in @vc->vc_par and the char is in * @c here. */ static void csi_ECMA(struct tty_struct *tty, struct vc_data *vc, u8 c) { switch (c) { case 'G': case '`': if (vc->vc_par[0]) vc->vc_par[0]--; gotoxy(vc, vc->vc_par[0], vc->state.y); break; case 'A': if (!vc->vc_par[0]) vc->vc_par[0]++; gotoxy(vc, vc->state.x, vc->state.y - vc->vc_par[0]); break; case 'B': case 'e': if (!vc->vc_par[0]) vc->vc_par[0]++; gotoxy(vc, vc->state.x, vc->state.y + vc->vc_par[0]); break; case 'C': case 'a': if (!vc->vc_par[0]) vc->vc_par[0]++; gotoxy(vc, vc->state.x + vc->vc_par[0], vc->state.y); break; case 'D': if (!vc->vc_par[0]) vc->vc_par[0]++; gotoxy(vc, vc->state.x - vc->vc_par[0], vc->state.y); break; case 'E': if (!vc->vc_par[0]) vc->vc_par[0]++; gotoxy(vc, 0, vc->state.y + vc->vc_par[0]); break; case 'F': if (!vc->vc_par[0]) vc->vc_par[0]++; gotoxy(vc, 0, vc->state.y - vc->vc_par[0]); break; case 'd': if (vc->vc_par[0]) vc->vc_par[0]--; gotoxay(vc, vc->state.x ,vc->vc_par[0]); break; case 'H': case 'f': if (vc->vc_par[0]) vc->vc_par[0]--; if (vc->vc_par[1]) vc->vc_par[1]--; gotoxay(vc, vc->vc_par[1], vc->vc_par[0]); break; case 'J': csi_J(vc, vc->vc_par[0]); break; case 'K': csi_K(vc); break; case 'L': csi_L(vc); break; case 'M': csi_M(vc); break; case 'P': csi_P(vc); break; case 'c': if (!vc->vc_par[0]) respond_ID(tty); break; case 'g': if (!vc->vc_par[0] && vc->state.x < VC_TABSTOPS_COUNT) set_bit(vc->state.x, vc->vc_tab_stop); else if (vc->vc_par[0] == 3) bitmap_zero(vc->vc_tab_stop, VC_TABSTOPS_COUNT); break; case 'h': csi_hl(vc, true); break; case 'l': csi_hl(vc, false); break; case 'm': csi_m(vc); break; case 'n': if (vc->vc_par[0] == 5) status_report(tty); else if (vc->vc_par[0] == 6) cursor_report(vc, tty); break; case 'q': /* DECLL - but only 3 leds */ /* map 0,1,2,3 to 0,1,2,4 */ if (vc->vc_par[0] < 4) vt_set_led_state(vc->vc_num, (vc->vc_par[0] < 3) ? vc->vc_par[0] : 4); break; case 'r': if (!vc->vc_par[0]) vc->vc_par[0]++; if (!vc->vc_par[1]) vc->vc_par[1] = vc->vc_rows; /* Minimum allowed region is 2 lines */ if (vc->vc_par[0] < vc->vc_par[1] && vc->vc_par[1] <= vc->vc_rows) { vc->vc_top = vc->vc_par[0] - 1; vc->vc_bottom = vc->vc_par[1]; gotoxay(vc, 0, 0); } break; case 's': save_cur(vc); break; case 'u': restore_cur(vc); break; case 'X': csi_X(vc); break; case '@': csi_at(vc, vc->vc_par[0]); break; case ']': csi_RSB(vc); break; } } static void vc_reset_params(struct vc_data *vc) { memset(vc->vc_par, 0, sizeof(vc->vc_par)); vc->vc_npar = 0; } /* console_lock is held */ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, u8 c) { /* * Control characters can be used in the _middle_ * of an escape sequence, aside from ANSI control strings. */ if (ansi_control_string(vc->vc_state) && c >= ASCII_IGNORE_FIRST && c <= ASCII_IGNORE_LAST) return; if (handle_ascii(tty, vc, c)) return; switch(vc->vc_state) { case ESesc: /* ESC */ handle_esc(tty, vc, c); return; case ESnonstd: /* ESC ] aka OSC */ switch (c) { case 'P': /* palette escape sequence */ vc_reset_params(vc); vc->vc_state = ESpalette; return; case 'R': /* reset palette */ reset_palette(vc); break; case '0' ... '9': vc->vc_state = ESosc; return; } vc->vc_state = ESnormal; return; case ESpalette: /* ESC ] P aka OSC P */ if (isxdigit(c)) { vc->vc_par[vc->vc_npar++] = hex_to_bin(c); if (vc->vc_npar == 7) { int i = vc->vc_par[0] * 3, j = 1; vc->vc_palette[i] = 16 * vc->vc_par[j++]; vc->vc_palette[i++] += vc->vc_par[j++]; vc->vc_palette[i] = 16 * vc->vc_par[j++]; vc->vc_palette[i++] += vc->vc_par[j++]; vc->vc_palette[i] = 16 * vc->vc_par[j++]; vc->vc_palette[i] += vc->vc_par[j]; set_palette(vc); vc->vc_state = ESnormal; } } else vc->vc_state = ESnormal; return; case ESsquare: /* ESC [ aka CSI, parameters or modifiers expected */ vc_reset_params(vc); vc->vc_state = ESgetpars; switch (c) { case '[': /* Function key */ vc->vc_state = ESfunckey; return; case '?': vc->vc_priv = EPdec; return; case '>': vc->vc_priv = EPgt; return; case '=': vc->vc_priv = EPeq; return; case '<': vc->vc_priv = EPlt; return; } vc->vc_priv = EPecma; fallthrough; case ESgetpars: /* ESC [ aka CSI, parameters expected */ switch (c) { case ';': if (vc->vc_npar < NPAR - 1) { vc->vc_npar++; return; } break; case '0' ... '9': vc->vc_par[vc->vc_npar] *= 10; vc->vc_par[vc->vc_npar] += c - '0'; return; } if (c >= ASCII_CSI_IGNORE_FIRST && c <= ASCII_CSI_IGNORE_LAST) { vc->vc_state = EScsiignore; return; } /* parameters done, handle the control char @c */ vc->vc_state = ESnormal; switch (vc->vc_priv) { case EPdec: csi_DEC(tty, vc, c); return; case EPecma: csi_ECMA(tty, vc, c); return; default: return; } case EScsiignore: if (c >= ASCII_CSI_IGNORE_FIRST && c <= ASCII_CSI_IGNORE_LAST) return; vc->vc_state = ESnormal; return; case ESpercent: /* ESC % */ vc->vc_state = ESnormal; switch (c) { case '@': /* defined in ISO 2022 */ vc->vc_utf = 0; return; case 'G': /* prelim official escape code */ case '8': /* retained for compatibility */ vc->vc_utf = 1; return; } return; case ESfunckey: /* ESC [ [ aka CSI [ */ vc->vc_state = ESnormal; return; case EShash: /* ESC # */ vc->vc_state = ESnormal; if (c == '8') { /* DEC screen alignment test. kludge :-) */ vc->vc_video_erase_char = (vc->vc_video_erase_char & 0xff00) | 'E'; csi_J(vc, CSI_J_VISIBLE); vc->vc_video_erase_char = (vc->vc_video_erase_char & 0xff00) | ' '; do_update_region(vc, vc->vc_origin, vc->vc_screenbuf_size / 2); } return; case ESsetG0: /* ESC ( */ vc_setGx(vc, 0, c); vc->vc_state = ESnormal; return; case ESsetG1: /* ESC ) */ vc_setGx(vc, 1, c); vc->vc_state = ESnormal; return; case ESapc: /* ESC _ */ return; case ESosc: /* ESC ] [0-9] aka OSC [0-9] */ return; case ESpm: /* ESC ^ */ return; case ESdcs: /* ESC P */ return; default: vc->vc_state = ESnormal; } } /* is_double_width() is based on the wcwidth() implementation by * Markus Kuhn -- 2007-05-26 (Unicode 5.0) * Latest version: https://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c */ struct interval { uint32_t first; uint32_t last; }; static int ucs_cmp(const void *key, const void *elt) { uint32_t ucs = *(uint32_t *)key; struct interval e = *(struct interval *) elt; if (ucs > e.last) return 1; else if (ucs < e.first) return -1; return 0; } static int is_double_width(uint32_t ucs) { static const struct interval double_width[] = { { 0x1100, 0x115F }, { 0x2329, 0x232A }, { 0x2E80, 0x303E }, { 0x3040, 0xA4CF }, { 0xAC00, 0xD7A3 }, { 0xF900, 0xFAFF }, { 0xFE10, 0xFE19 }, { 0xFE30, 0xFE6F }, { 0xFF00, 0xFF60 }, { 0xFFE0, 0xFFE6 }, { 0x20000, 0x2FFFD }, { 0x30000, 0x3FFFD } }; if (ucs < double_width[0].first || ucs > double_width[ARRAY_SIZE(double_width) - 1].last) return 0; return bsearch(&ucs, double_width, ARRAY_SIZE(double_width), sizeof(struct interval), ucs_cmp) != NULL; } struct vc_draw_region { unsigned long from, to; int x; }; static void con_flush(struct vc_data *vc, struct vc_draw_region *draw) { if (draw->x < 0) return; vc->vc_sw->con_putcs(vc, (u16 *)draw->from, (u16 *)draw->to - (u16 *)draw->from, vc->state.y, draw->x); draw->x = -1; } static inline int vc_translate_ascii(const struct vc_data *vc, int c) { if (IS_ENABLED(CONFIG_CONSOLE_TRANSLATIONS)) { if (vc->vc_toggle_meta) c |= 0x80; return vc->vc_translate[c]; } return c; } /** * vc_sanitize_unicode - Replace invalid Unicode code points with ``U+FFFD`` * @c: the received code point */ static inline int vc_sanitize_unicode(const int c) { if (c >= 0xd800 && c <= 0xdfff) return 0xfffd; return c; } /** * vc_translate_unicode - Combine UTF-8 into Unicode in &vc_data.vc_utf_char * @vc: virtual console * @c: UTF-8 byte to translate * @rescan: set to true iff @c wasn't consumed here and needs to be re-processed * * * &vc_data.vc_utf_char is the being-constructed Unicode code point. * * &vc_data.vc_utf_count is the number of continuation bytes still expected to * arrive. * * &vc_data.vc_npar is the number of continuation bytes arrived so far. * * Return: * * %-1 - Input OK so far, @c consumed, further bytes expected. * * %0xFFFD - Possibility 1: input invalid, @c may have been consumed (see * desc. of @rescan). Possibility 2: input OK, @c consumed, * ``U+FFFD`` is the resulting code point. ``U+FFFD`` is valid, * ``REPLACEMENT CHARACTER``. * * otherwise - Input OK, @c consumed, resulting code point returned. */ static int vc_translate_unicode(struct vc_data *vc, int c, bool *rescan) { static const u32 utf8_length_changes[] = {0x7f, 0x7ff, 0xffff, 0x10ffff}; /* Continuation byte received */ if ((c & 0xc0) == 0x80) { /* Unexpected continuation byte? */ if (!vc->vc_utf_count) return 0xfffd; vc->vc_utf_char = (vc->vc_utf_char << 6) | (c & 0x3f); vc->vc_npar++; if (--vc->vc_utf_count) goto need_more_bytes; /* Got a whole character */ c = vc->vc_utf_char; /* Reject overlong sequences */ if (c <= utf8_length_changes[vc->vc_npar - 1] || c > utf8_length_changes[vc->vc_npar]) return 0xfffd; return vc_sanitize_unicode(c); } /* Single ASCII byte or first byte of a sequence received */ if (vc->vc_utf_count) { /* Continuation byte expected */ *rescan = true; vc->vc_utf_count = 0; return 0xfffd; } /* Nothing to do if an ASCII byte was received */ if (c <= 0x7f) return c; /* First byte of a multibyte sequence received */ vc->vc_npar = 0; if ((c & 0xe0) == 0xc0) { vc->vc_utf_count = 1; vc->vc_utf_char = (c & 0x1f); } else if ((c & 0xf0) == 0xe0) { vc->vc_utf_count = 2; vc->vc_utf_char = (c & 0x0f); } else if ((c & 0xf8) == 0xf0) { vc->vc_utf_count = 3; vc->vc_utf_char = (c & 0x07); } else { return 0xfffd; } need_more_bytes: return -1; } static int vc_translate(struct vc_data *vc, int *c, bool *rescan) { /* Do no translation at all in control states */ if (vc->vc_state != ESnormal) return *c; if (vc->vc_utf && !vc->vc_disp_ctrl) return *c = vc_translate_unicode(vc, *c, rescan); /* no utf or alternate charset mode */ return vc_translate_ascii(vc, *c); } static inline unsigned char vc_invert_attr(const struct vc_data *vc) { if (!vc->vc_can_do_color) return vc->vc_attr ^ 0x08; if (vc->vc_hi_font_mask == 0x100) return (vc->vc_attr & 0x11) | ((vc->vc_attr & 0xe0) >> 4) | ((vc->vc_attr & 0x0e) << 4); return (vc->vc_attr & 0x88) | ((vc->vc_attr & 0x70) >> 4) | ((vc->vc_attr & 0x07) << 4); } static bool vc_is_control(struct vc_data *vc, int tc, int c) { /* * A bitmap for codes <32. A bit of 1 indicates that the code * corresponding to that bit number invokes some special action (such * as cursor movement) and should not be displayed as a glyph unless * the disp_ctrl mode is explicitly enabled. */ static const u32 CTRL_ACTION = BIT(ASCII_NULL) | GENMASK(ASCII_SHIFTIN, ASCII_BELL) | BIT(ASCII_CANCEL) | BIT(ASCII_SUBSTITUTE) | BIT(ASCII_ESCAPE); /* Cannot be overridden by disp_ctrl */ static const u32 CTRL_ALWAYS = BIT(ASCII_NULL) | BIT(ASCII_BACKSPACE) | BIT(ASCII_LINEFEED) | BIT(ASCII_SHIFTIN) | BIT(ASCII_SHIFTOUT) | BIT(ASCII_CAR_RET) | BIT(ASCII_FORMFEED) | BIT(ASCII_ESCAPE); if (vc->vc_state != ESnormal) return true; if (!tc) return true; /* * If the original code was a control character we only allow a glyph * to be displayed if the code is not normally used (such as for cursor * movement) or if the disp_ctrl mode has been explicitly enabled. * Certain characters (as given by the CTRL_ALWAYS bitmap) are always * displayed as control characters, as the console would be pretty * useless without them; to display an arbitrary font position use the * direct-to-font zone in UTF-8 mode. */ if (c < BITS_PER_TYPE(CTRL_ALWAYS)) { if (vc->vc_disp_ctrl) return CTRL_ALWAYS & BIT(c); else return vc->vc_utf || (CTRL_ACTION & BIT(c)); } if (c == ASCII_DEL && !vc->vc_disp_ctrl) return true; if (c == ASCII_EXT_CSI) return true; return false; } static int vc_con_write_normal(struct vc_data *vc, int tc, int c, struct vc_draw_region *draw) { int next_c; unsigned char vc_attr = vc->vc_attr; u16 himask = vc->vc_hi_font_mask, charmask = himask ? 0x1ff : 0xff; u8 width = 1; bool inverse = false; if (vc->vc_utf && !vc->vc_disp_ctrl) { if (is_double_width(c)) width = 2; } /* Now try to find out how to display it */ tc = conv_uni_to_pc(vc, tc); if (tc & ~charmask) { if (tc == -1 || tc == -2) return -1; /* nothing to display */ /* Glyph not found */ if ((!vc->vc_utf || vc->vc_disp_ctrl || c < 128) && !(c & ~charmask)) { /* * In legacy mode use the glyph we get by a 1:1 * mapping. * This would make absolutely no sense with Unicode in * mind, but do this for ASCII characters since a font * may lack Unicode mapping info and we don't want to * end up with having question marks only. */ tc = c; } else { /* * Display U+FFFD. If it's not found, display an inverse * question mark. */ tc = conv_uni_to_pc(vc, 0xfffd); if (tc < 0) { inverse = true; tc = conv_uni_to_pc(vc, '?'); if (tc < 0) tc = '?'; vc_attr = vc_invert_attr(vc); con_flush(vc, draw); } } } next_c = c; while (1) { if (vc->vc_need_wrap || vc->vc_decim) con_flush(vc, draw); if (vc->vc_need_wrap) { cr(vc); lf(vc); } if (vc->vc_decim) insert_char(vc, 1); vc_uniscr_putc(vc, next_c); if (himask) tc = ((tc & 0x100) ? himask : 0) | (tc & 0xff); tc |= (vc_attr << 8) & ~himask; scr_writew(tc, (u16 *)vc->vc_pos); if (con_should_update(vc) && draw->x < 0) { draw->x = vc->state.x; draw->from = vc->vc_pos; } if (vc->state.x == vc->vc_cols - 1) { vc->vc_need_wrap = vc->vc_decawm; draw->to = vc->vc_pos + 2; } else { vc->state.x++; draw->to = (vc->vc_pos += 2); } if (!--width) break; /* A space is printed in the second column */ tc = conv_uni_to_pc(vc, ' '); if (tc < 0) tc = ' '; next_c = ' '; } notify_write(vc, c); if (inverse) con_flush(vc, draw); return 0; } /* acquires console_lock */ static int do_con_write(struct tty_struct *tty, const u8 *buf, int count) { struct vc_draw_region draw = { .x = -1, }; int c, tc, n = 0; unsigned int currcons; struct vc_data *vc = tty->driver_data; struct vt_notifier_param param; bool rescan; if (in_interrupt()) return count; console_lock(); currcons = vc->vc_num; if (!vc_cons_allocated(currcons)) { /* could this happen? */ pr_warn_once("con_write: tty %d not allocated\n", currcons+1); console_unlock(); return 0; } /* undraw cursor first */ if (con_is_fg(vc)) hide_cursor(vc); param.vc = vc; while (!tty->flow.stopped && count) { u8 orig = *buf; buf++; n++; count--; rescan_last_byte: c = orig; rescan = false; tc = vc_translate(vc, &c, &rescan); if (tc == -1) continue; param.c = tc; if (atomic_notifier_call_chain(&vt_notifier_list, VT_PREWRITE, ¶m) == NOTIFY_STOP) continue; if (vc_is_control(vc, tc, c)) { con_flush(vc, &draw); do_con_trol(tty, vc, orig); continue; } if (vc_con_write_normal(vc, tc, c, &draw) < 0) continue; if (rescan) goto rescan_last_byte; } con_flush(vc, &draw); console_conditional_schedule(); notify_update(vc); console_unlock(); return n; } /* * This is the console switching callback. * * Doing console switching in a process context allows * us to do the switches asynchronously (needed when we want * to switch due to a keyboard interrupt). Synchronization * with other console code and prevention of re-entrancy is * ensured with console_lock. */ static void console_callback(struct work_struct *ignored) { console_lock(); if (want_console >= 0) { if (want_console != fg_console && vc_cons_allocated(want_console)) { hide_cursor(vc_cons[fg_console].d); change_console(vc_cons[want_console].d); /* we only changed when the console had already been allocated - a new console is not created in an interrupt routine */ } want_console = -1; } if (do_poke_blanked_console) { /* do not unblank for a LED change */ do_poke_blanked_console = 0; poke_blanked_console(); } if (scrollback_delta) { struct vc_data *vc = vc_cons[fg_console].d; clear_selection(); if (vc->vc_mode == KD_TEXT && vc->vc_sw->con_scrolldelta) vc->vc_sw->con_scrolldelta(vc, scrollback_delta); scrollback_delta = 0; } if (blank_timer_expired) { do_blank_screen(0); blank_timer_expired = 0; } notify_update(vc_cons[fg_console].d); console_unlock(); } int set_console(int nr) { struct vc_data *vc = vc_cons[fg_console].d; if (!vc_cons_allocated(nr) || vt_dont_switch || (vc->vt_mode.mode == VT_AUTO && vc->vc_mode == KD_GRAPHICS)) { /* * Console switch will fail in console_callback() or * change_console() so there is no point scheduling * the callback * * Existing set_console() users don't check the return * value so this shouldn't break anything */ return -EINVAL; } want_console = nr; schedule_console_callback(); return 0; } struct tty_driver *console_driver; #ifdef CONFIG_VT_CONSOLE /** * vt_kmsg_redirect() - sets/gets the kernel message console * @new: the new virtual terminal number or -1 if the console should stay * unchanged * * By default, the kernel messages are always printed on the current virtual * console. However, the user may modify that default with the * %TIOCL_SETKMSGREDIRECT ioctl call. * * This function sets the kernel message console to be @new. It returns the old * virtual console number. The virtual terminal number %0 (both as parameter and * return value) means no redirection (i.e. always printed on the currently * active console). * * The parameter -1 means that only the current console is returned, but the * value is not modified. You may use the macro vt_get_kmsg_redirect() in that * case to make the code more understandable. * * When the kernel is compiled without %CONFIG_VT_CONSOLE, this function ignores * the parameter and always returns %0. */ int vt_kmsg_redirect(int new) { static int kmsg_con; if (new != -1) return xchg(&kmsg_con, new); else return kmsg_con; } /* * Console on virtual terminal * * The console must be locked when we get here. */ static void vt_console_print(struct console *co, const char *b, unsigned count) { struct vc_data *vc = vc_cons[fg_console].d; unsigned char c; static DEFINE_SPINLOCK(printing_lock); const ushort *start; ushort start_x, cnt; int kmsg_console; WARN_CONSOLE_UNLOCKED(); /* this protects against concurrent oops only */ if (!spin_trylock(&printing_lock)) return; kmsg_console = vt_get_kmsg_redirect(); if (kmsg_console && vc_cons_allocated(kmsg_console - 1)) vc = vc_cons[kmsg_console - 1].d; if (!vc_cons_allocated(fg_console)) { /* impossible */ /* printk("vt_console_print: tty %d not allocated ??\n", currcons+1); */ goto quit; } if (vc->vc_mode != KD_TEXT) goto quit; /* undraw cursor first */ if (con_is_fg(vc)) hide_cursor(vc); start = (ushort *)vc->vc_pos; start_x = vc->state.x; cnt = 0; while (count--) { c = *b++; if (c == ASCII_LINEFEED || c == ASCII_CAR_RET || c == ASCII_BACKSPACE || vc->vc_need_wrap) { if (cnt && con_is_visible(vc)) vc->vc_sw->con_putcs(vc, start, cnt, vc->state.y, start_x); cnt = 0; if (c == ASCII_BACKSPACE) { bs(vc); start = (ushort *)vc->vc_pos; start_x = vc->state.x; continue; } if (c != ASCII_CAR_RET) lf(vc); cr(vc); start = (ushort *)vc->vc_pos; start_x = vc->state.x; if (c == ASCII_LINEFEED || c == ASCII_CAR_RET) continue; } vc_uniscr_putc(vc, c); scr_writew((vc->vc_attr << 8) + c, (unsigned short *)vc->vc_pos); notify_write(vc, c); cnt++; if (vc->state.x == vc->vc_cols - 1) { vc->vc_need_wrap = 1; } else { vc->vc_pos += 2; vc->state.x++; } } if (cnt && con_is_visible(vc)) vc->vc_sw->con_putcs(vc, start, cnt, vc->state.y, start_x); set_cursor(vc); notify_update(vc); quit: spin_unlock(&printing_lock); } static struct tty_driver *vt_console_device(struct console *c, int *index) { *index = c->index ? c->index-1 : fg_console; return console_driver; } static int vt_console_setup(struct console *co, char *options) { return co->index >= MAX_NR_CONSOLES ? -EINVAL : 0; } static struct console vt_console_driver = { .name = "tty", .setup = vt_console_setup, .write = vt_console_print, .device = vt_console_device, .unblank = unblank_screen, .flags = CON_PRINTBUFFER, .index = -1, }; #endif /* * Handling of Linux-specific VC ioctls */ /* * Generally a bit racy with respect to console_lock();. * * There are some functions which don't need it. * * There are some functions which can sleep for arbitrary periods * (paste_selection) but we don't need the lock there anyway. * * set_selection_user has locking, and definitely needs it */ int tioclinux(struct tty_struct *tty, unsigned long arg) { char type, data; char __user *p = (char __user *)arg; void __user *param_aligned32 = (u32 __user *)arg + 1; void __user *param = (void __user *)arg + 1; int lines; int ret; if (current->signal->tty != tty && !capable(CAP_SYS_ADMIN)) return -EPERM; if (get_user(type, p)) return -EFAULT; ret = 0; switch (type) { case TIOCL_SETSEL: return set_selection_user(param, tty); case TIOCL_PASTESEL: if (!capable(CAP_SYS_ADMIN)) return -EPERM; return paste_selection(tty); case TIOCL_UNBLANKSCREEN: console_lock(); unblank_screen(); console_unlock(); break; case TIOCL_SELLOADLUT: if (!capable(CAP_SYS_ADMIN)) return -EPERM; return sel_loadlut(param_aligned32); case TIOCL_GETSHIFTSTATE: /* * Make it possible to react to Shift+Mousebutton. Note that * 'shift_state' is an undocumented kernel-internal variable; * programs not closely related to the kernel should not use * this. */ data = vt_get_shift_state(); return put_user(data, p); case TIOCL_GETMOUSEREPORTING: console_lock(); /* May be overkill */ data = mouse_reporting(); console_unlock(); return put_user(data, p); case TIOCL_SETVESABLANK: return set_vesa_blanking(param); case TIOCL_GETKMSGREDIRECT: data = vt_get_kmsg_redirect(); return put_user(data, p); case TIOCL_SETKMSGREDIRECT: if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (get_user(data, p+1)) return -EFAULT; vt_kmsg_redirect(data); break; case TIOCL_GETFGCONSOLE: /* * No locking needed as this is a transiently correct return * anyway if the caller hasn't disabled switching. */ return fg_console; case TIOCL_SCROLLCONSOLE: if (get_user(lines, (s32 __user *)param_aligned32)) return -EFAULT; /* * Needs the console lock here. Note that lots of other calls * need fixing before the lock is actually useful! */ console_lock(); scrollfront(vc_cons[fg_console].d, lines); console_unlock(); break; case TIOCL_BLANKSCREEN: /* until explicitly unblanked, not only poked */ console_lock(); ignore_poke = 1; do_blank_screen(0); console_unlock(); break; case TIOCL_BLANKEDSCREEN: return console_blanked; default: return -EINVAL; } return ret; } /* * /dev/ttyN handling */ static ssize_t con_write(struct tty_struct *tty, const u8 *buf, size_t count) { int retval; retval = do_con_write(tty, buf, count); con_flush_chars(tty); return retval; } static int con_put_char(struct tty_struct *tty, u8 ch) { return do_con_write(tty, &ch, 1); } static unsigned int con_write_room(struct tty_struct *tty) { if (tty->flow.stopped) return 0; return 32768; /* No limit, really; we're not buffering */ } /* * con_throttle and con_unthrottle are only used for * paste_selection(), which has to stuff in a large number of * characters... */ static void con_throttle(struct tty_struct *tty) { } static void con_unthrottle(struct tty_struct *tty) { struct vc_data *vc = tty->driver_data; wake_up_interruptible(&vc->paste_wait); } /* * Turn the Scroll-Lock LED on when the tty is stopped */ static void con_stop(struct tty_struct *tty) { int console_num; if (!tty) return; console_num = tty->index; if (!vc_cons_allocated(console_num)) return; vt_kbd_con_stop(console_num); } /* * Turn the Scroll-Lock LED off when the console is started */ static void con_start(struct tty_struct *tty) { int console_num; if (!tty) return; console_num = tty->index; if (!vc_cons_allocated(console_num)) return; vt_kbd_con_start(console_num); } static void con_flush_chars(struct tty_struct *tty) { struct vc_data *vc = tty->driver_data; if (in_interrupt()) /* from flush_to_ldisc */ return; console_lock(); set_cursor(vc); console_unlock(); } /* * Allocate the console screen memory. */ static int con_install(struct tty_driver *driver, struct tty_struct *tty) { unsigned int currcons = tty->index; struct vc_data *vc; int ret; console_lock(); ret = vc_allocate(currcons); if (ret) goto unlock; vc = vc_cons[currcons].d; /* Still being freed */ if (vc->port.tty) { ret = -ERESTARTSYS; goto unlock; } ret = tty_port_install(&vc->port, driver, tty); if (ret) goto unlock; tty->driver_data = vc; vc->port.tty = tty; tty_port_get(&vc->port); if (!tty->winsize.ws_row && !tty->winsize.ws_col) { tty->winsize.ws_row = vc_cons[currcons].d->vc_rows; tty->winsize.ws_col = vc_cons[currcons].d->vc_cols; } if (vc->vc_utf) tty->termios.c_iflag |= IUTF8; else tty->termios.c_iflag &= ~IUTF8; unlock: console_unlock(); return ret; } static int con_open(struct tty_struct *tty, struct file *filp) { /* everything done in install */ return 0; } static void con_close(struct tty_struct *tty, struct file *filp) { /* Nothing to do - we defer to shutdown */ } static void con_shutdown(struct tty_struct *tty) { struct vc_data *vc = tty->driver_data; BUG_ON(vc == NULL); console_lock(); vc->port.tty = NULL; console_unlock(); } static void con_cleanup(struct tty_struct *tty) { struct vc_data *vc = tty->driver_data; tty_port_put(&vc->port); } /* * We can't deal with anything but the N_TTY ldisc, * because we can sleep in our write() routine. */ static int con_ldisc_ok(struct tty_struct *tty, int ldisc) { return ldisc == N_TTY ? 0 : -EINVAL; } static int default_color = 7; /* white */ static int default_italic_color = 2; // green (ASCII) static int default_underline_color = 3; // cyan (ASCII) module_param_named(color, default_color, int, S_IRUGO | S_IWUSR); module_param_named(italic, default_italic_color, int, S_IRUGO | S_IWUSR); module_param_named(underline, default_underline_color, int, S_IRUGO | S_IWUSR); static void vc_init(struct vc_data *vc, int do_clear) { int j, k ; set_origin(vc); vc->vc_pos = vc->vc_origin; reset_vc(vc); for (j=k=0; j<16; j++) { vc->vc_palette[k++] = default_red[j] ; vc->vc_palette[k++] = default_grn[j] ; vc->vc_palette[k++] = default_blu[j] ; } vc->vc_def_color = default_color; vc->vc_ulcolor = default_underline_color; vc->vc_itcolor = default_italic_color; vc->vc_halfcolor = 0x08; /* grey */ init_waitqueue_head(&vc->paste_wait); reset_terminal(vc, do_clear); } /* * This routine initializes console interrupts, and does nothing * else. If you want the screen to clear, call tty_write with * the appropriate escape-sequence. */ static int __init con_init(void) { const char *display_desc = NULL; struct vc_data *vc; unsigned int currcons = 0, i; console_lock(); if (!conswitchp) conswitchp = &dummy_con; display_desc = conswitchp->con_startup(); if (!display_desc) { fg_console = 0; console_unlock(); return 0; } for (i = 0; i < MAX_NR_CON_DRIVER; i++) { struct con_driver *con_driver = ®istered_con_driver[i]; if (con_driver->con == NULL) { con_driver->con = conswitchp; con_driver->desc = display_desc; con_driver->flag = CON_DRIVER_FLAG_INIT; con_driver->first = 0; con_driver->last = MAX_NR_CONSOLES - 1; break; } } for (i = 0; i < MAX_NR_CONSOLES; i++) con_driver_map[i] = conswitchp; if (blankinterval) { blank_state = blank_normal_wait; mod_timer(&console_timer, jiffies + (blankinterval * HZ)); } for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) { vc_cons[currcons].d = vc = kzalloc(sizeof(struct vc_data), GFP_NOWAIT); INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK); tty_port_init(&vc->port); visual_init(vc, currcons, true); /* Assuming vc->vc_{cols,rows,screenbuf_size} are sane here. */ vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size, GFP_NOWAIT); vc_init(vc, currcons || !vc->vc_sw->con_save_screen); } currcons = fg_console = 0; master_display_fg = vc = vc_cons[currcons].d; set_origin(vc); save_screen(vc); gotoxy(vc, vc->state.x, vc->state.y); csi_J(vc, CSI_J_CURSOR_TO_END); update_screen(vc); pr_info("Console: %s %s %dx%d\n", vc->vc_can_do_color ? "colour" : "mono", display_desc, vc->vc_cols, vc->vc_rows); console_unlock(); #ifdef CONFIG_VT_CONSOLE register_console(&vt_console_driver); #endif return 0; } console_initcall(con_init); static const struct tty_operations con_ops = { .install = con_install, .open = con_open, .close = con_close, .write = con_write, .write_room = con_write_room, .put_char = con_put_char, .flush_chars = con_flush_chars, .ioctl = vt_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = vt_compat_ioctl, #endif .stop = con_stop, .start = con_start, .throttle = con_throttle, .unthrottle = con_unthrottle, .resize = vt_resize, .shutdown = con_shutdown, .cleanup = con_cleanup, .ldisc_ok = con_ldisc_ok, }; static struct cdev vc0_cdev; static ssize_t show_tty_active(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "tty%d\n", fg_console + 1); } static DEVICE_ATTR(active, S_IRUGO, show_tty_active, NULL); static struct attribute *vt_dev_attrs[] = { &dev_attr_active.attr, NULL }; ATTRIBUTE_GROUPS(vt_dev); int __init vty_init(const struct file_operations *console_fops) { cdev_init(&vc0_cdev, console_fops); if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) || register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0) panic("Couldn't register /dev/tty0 driver\n"); tty0dev = device_create_with_groups(&tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, vt_dev_groups, "tty0"); if (IS_ERR(tty0dev)) tty0dev = NULL; vcs_init(); console_driver = tty_alloc_driver(MAX_NR_CONSOLES, TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS); if (IS_ERR(console_driver)) panic("Couldn't allocate console driver\n"); console_driver->name = "tty"; console_driver->name_base = 1; console_driver->major = TTY_MAJOR; console_driver->minor_start = 1; console_driver->type = TTY_DRIVER_TYPE_CONSOLE; console_driver->init_termios = tty_std_termios; if (default_utf8) console_driver->init_termios.c_iflag |= IUTF8; tty_set_operations(console_driver, &con_ops); if (tty_register_driver(console_driver)) panic("Couldn't register console driver\n"); kbd_init(); console_map_init(); #ifdef CONFIG_MDA_CONSOLE mda_console_init(); #endif return 0; } static const struct class vtconsole_class = { .name = "vtconsole", }; static int do_bind_con_driver(const struct consw *csw, int first, int last, int deflt) { struct module *owner = csw->owner; const char *desc = NULL; struct con_driver *con_driver; int i, j = -1, k = -1, retval = -ENODEV; if (!try_module_get(owner)) return -ENODEV; WARN_CONSOLE_UNLOCKED(); /* check if driver is registered */ for (i = 0; i < MAX_NR_CON_DRIVER; i++) { con_driver = ®istered_con_driver[i]; if (con_driver->con == csw) { desc = con_driver->desc; retval = 0; break; } } if (retval) goto err; if (!(con_driver->flag & CON_DRIVER_FLAG_INIT)) { csw->con_startup(); con_driver->flag |= CON_DRIVER_FLAG_INIT; } if (deflt) { if (conswitchp) module_put(conswitchp->owner); __module_get(owner); conswitchp = csw; } first = max(first, con_driver->first); last = min(last, con_driver->last); for (i = first; i <= last; i++) { int old_was_color; struct vc_data *vc = vc_cons[i].d; if (con_driver_map[i]) module_put(con_driver_map[i]->owner); __module_get(owner); con_driver_map[i] = csw; if (!vc || !vc->vc_sw) continue; j = i; if (con_is_visible(vc)) { k = i; save_screen(vc); } old_was_color = vc->vc_can_do_color; vc->vc_sw->con_deinit(vc); vc->vc_origin = (unsigned long)vc->vc_screenbuf; visual_init(vc, i, false); set_origin(vc); update_attr(vc); /* If the console changed between mono <-> color, then * the attributes in the screenbuf will be wrong. The * following resets all attributes to something sane. */ if (old_was_color != vc->vc_can_do_color) clear_buffer_attributes(vc); } pr_info("Console: switching "); if (!deflt) pr_cont("consoles %d-%d ", first + 1, last + 1); if (j >= 0) { struct vc_data *vc = vc_cons[j].d; pr_cont("to %s %s %dx%d\n", vc->vc_can_do_color ? "colour" : "mono", desc, vc->vc_cols, vc->vc_rows); if (k >= 0) { vc = vc_cons[k].d; update_screen(vc); } } else { pr_cont("to %s\n", desc); } retval = 0; err: module_put(owner); return retval; }; #ifdef CONFIG_VT_HW_CONSOLE_BINDING int do_unbind_con_driver(const struct consw *csw, int first, int last, int deflt) { struct module *owner = csw->owner; const struct consw *defcsw = NULL; struct con_driver *con_driver = NULL, *con_back = NULL; int i, retval = -ENODEV; if (!try_module_get(owner)) return -ENODEV; WARN_CONSOLE_UNLOCKED(); /* check if driver is registered and if it is unbindable */ for (i = 0; i < MAX_NR_CON_DRIVER; i++) { con_driver = ®istered_con_driver[i]; if (con_driver->con == csw && con_driver->flag & CON_DRIVER_FLAG_MODULE) { retval = 0; break; } } if (retval) goto err; retval = -ENODEV; /* check if backup driver exists */ for (i = 0; i < MAX_NR_CON_DRIVER; i++) { con_back = ®istered_con_driver[i]; if (con_back->con && con_back->con != csw) { defcsw = con_back->con; retval = 0; break; } } if (retval) goto err; if (!con_is_bound(csw)) goto err; first = max(first, con_driver->first); last = min(last, con_driver->last); for (i = first; i <= last; i++) { if (con_driver_map[i] == csw) { module_put(csw->owner); con_driver_map[i] = NULL; } } if (!con_is_bound(defcsw)) { const struct consw *defconsw = conswitchp; defcsw->con_startup(); con_back->flag |= CON_DRIVER_FLAG_INIT; /* * vgacon may change the default driver to point * to dummycon, we restore it here... */ conswitchp = defconsw; } if (!con_is_bound(csw)) con_driver->flag &= ~CON_DRIVER_FLAG_INIT; /* ignore return value, binding should not fail */ do_bind_con_driver(defcsw, first, last, deflt); err: module_put(owner); return retval; } EXPORT_SYMBOL_GPL(do_unbind_con_driver); static int vt_bind(struct con_driver *con) { const struct consw *defcsw = NULL, *csw = NULL; int i, more = 1, first = -1, last = -1, deflt = 0; if (!con->con || !(con->flag & CON_DRIVER_FLAG_MODULE)) goto err; csw = con->con; for (i = 0; i < MAX_NR_CON_DRIVER; i++) { struct con_driver *con = ®istered_con_driver[i]; if (con->con && !(con->flag & CON_DRIVER_FLAG_MODULE)) { defcsw = con->con; break; } } if (!defcsw) goto err; while (more) { more = 0; for (i = con->first; i <= con->last; i++) { if (con_driver_map[i] == defcsw) { if (first == -1) first = i; last = i; more = 1; } else if (first != -1) break; } if (first == 0 && last == MAX_NR_CONSOLES -1) deflt = 1; if (first != -1) do_bind_con_driver(csw, first, last, deflt); first = -1; last = -1; deflt = 0; } err: return 0; } static int vt_unbind(struct con_driver *con) { const struct consw *csw = NULL; int i, more = 1, first = -1, last = -1, deflt = 0; int ret; if (!con->con || !(con->flag & CON_DRIVER_FLAG_MODULE)) goto err; csw = con->con; while (more) { more = 0; for (i = con->first; i <= con->last; i++) { if (con_driver_map[i] == csw) { if (first == -1) first = i; last = i; more = 1; } else if (first != -1) break; } if (first == 0 && last == MAX_NR_CONSOLES -1) deflt = 1; if (first != -1) { ret = do_unbind_con_driver(csw, first, last, deflt); if (ret != 0) return ret; } first = -1; last = -1; deflt = 0; } err: return 0; } #else static inline int vt_bind(struct con_driver *con) { return 0; } static inline int vt_unbind(struct con_driver *con) { return 0; } #endif /* CONFIG_VT_HW_CONSOLE_BINDING */ static ssize_t store_bind(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct con_driver *con = dev_get_drvdata(dev); int bind = simple_strtoul(buf, NULL, 0); console_lock(); if (bind) vt_bind(con); else vt_unbind(con); console_unlock(); return count; } static ssize_t show_bind(struct device *dev, struct device_attribute *attr, char *buf) { struct con_driver *con = dev_get_drvdata(dev); int bind; console_lock(); bind = con_is_bound(con->con); console_unlock(); return sysfs_emit(buf, "%i\n", bind); } static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) { struct con_driver *con = dev_get_drvdata(dev); return sysfs_emit(buf, "%s %s\n", (con->flag & CON_DRIVER_FLAG_MODULE) ? "(M)" : "(S)", con->desc); } static DEVICE_ATTR(bind, S_IRUGO|S_IWUSR, show_bind, store_bind); static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); static struct attribute *con_dev_attrs[] = { &dev_attr_bind.attr, &dev_attr_name.attr, NULL }; ATTRIBUTE_GROUPS(con_dev); static int vtconsole_init_device(struct con_driver *con) { con->flag |= CON_DRIVER_FLAG_ATTR; return 0; } static void vtconsole_deinit_device(struct con_driver *con) { con->flag &= ~CON_DRIVER_FLAG_ATTR; } /** * con_is_bound - checks if driver is bound to the console * @csw: console driver * * RETURNS: zero if unbound, nonzero if bound * * Drivers can call this and if zero, they should release * all resources allocated on &consw.con_startup() */ int con_is_bound(const struct consw *csw) { int i, bound = 0; WARN_CONSOLE_UNLOCKED(); for (i = 0; i < MAX_NR_CONSOLES; i++) { if (con_driver_map[i] == csw) { bound = 1; break; } } return bound; } EXPORT_SYMBOL(con_is_bound); /** * con_is_visible - checks whether the current console is visible * @vc: virtual console * * RETURNS: zero if not visible, nonzero if visible */ bool con_is_visible(const struct vc_data *vc) { WARN_CONSOLE_UNLOCKED(); return *vc->vc_display_fg == vc; } EXPORT_SYMBOL(con_is_visible); /** * con_debug_enter - prepare the console for the kernel debugger * @vc: virtual console * * Called when the console is taken over by the kernel debugger, this * function needs to save the current console state, then put the console * into a state suitable for the kernel debugger. */ void con_debug_enter(struct vc_data *vc) { saved_fg_console = fg_console; saved_last_console = last_console; saved_want_console = want_console; saved_vc_mode = vc->vc_mode; saved_console_blanked = console_blanked; vc->vc_mode = KD_TEXT; console_blanked = 0; if (vc->vc_sw->con_debug_enter) vc->vc_sw->con_debug_enter(vc); #ifdef CONFIG_KGDB_KDB /* Set the initial LINES variable if it is not already set */ if (vc->vc_rows < 999) { int linecount; char lns[4]; const char *setargs[3] = { "set", "LINES", lns, }; if (kdbgetintenv(setargs[0], &linecount)) { snprintf(lns, 4, "%i", vc->vc_rows); kdb_set(2, setargs); } } if (vc->vc_cols < 999) { int colcount; char cols[4]; const char *setargs[3] = { "set", "COLUMNS", cols, }; if (kdbgetintenv(setargs[0], &colcount)) { snprintf(cols, 4, "%i", vc->vc_cols); kdb_set(2, setargs); } } #endif /* CONFIG_KGDB_KDB */ } EXPORT_SYMBOL_GPL(con_debug_enter); /** * con_debug_leave - restore console state * * Restore the console state to what it was before the kernel debugger * was invoked. */ void con_debug_leave(void) { struct vc_data *vc; fg_console = saved_fg_console; last_console = saved_last_console; want_console = saved_want_console; console_blanked = saved_console_blanked; vc_cons[fg_console].d->vc_mode = saved_vc_mode; vc = vc_cons[fg_console].d; if (vc->vc_sw->con_debug_leave) vc->vc_sw->con_debug_leave(vc); } EXPORT_SYMBOL_GPL(con_debug_leave); static int do_register_con_driver(const struct consw *csw, int first, int last) { struct module *owner = csw->owner; struct con_driver *con_driver; const char *desc; int i, retval; WARN_CONSOLE_UNLOCKED(); if (!try_module_get(owner)) return -ENODEV; for (i = 0; i < MAX_NR_CON_DRIVER; i++) { con_driver = ®istered_con_driver[i]; /* already registered */ if (con_driver->con == csw) { retval = -EBUSY; goto err; } } desc = csw->con_startup(); if (!desc) { retval = -ENODEV; goto err; } retval = -EINVAL; for (i = 0; i < MAX_NR_CON_DRIVER; i++) { con_driver = ®istered_con_driver[i]; if (con_driver->con == NULL && !(con_driver->flag & CON_DRIVER_FLAG_ZOMBIE)) { con_driver->con = csw; con_driver->desc = desc; con_driver->node = i; con_driver->flag = CON_DRIVER_FLAG_MODULE | CON_DRIVER_FLAG_INIT; con_driver->first = first; con_driver->last = last; retval = 0; break; } } if (retval) goto err; con_driver->dev = device_create_with_groups(&vtconsole_class, NULL, MKDEV(0, con_driver->node), con_driver, con_dev_groups, "vtcon%i", con_driver->node); if (IS_ERR(con_driver->dev)) { pr_warn("Unable to create device for %s; errno = %ld\n", con_driver->desc, PTR_ERR(con_driver->dev)); con_driver->dev = NULL; } else { vtconsole_init_device(con_driver); } err: module_put(owner); return retval; } /** * do_unregister_con_driver - unregister console driver from console layer * @csw: console driver * * DESCRIPTION: All drivers that registers to the console layer must * call this function upon exit, or if the console driver is in a state * where it won't be able to handle console services, such as the * framebuffer console without loaded framebuffer drivers. * * The driver must unbind first prior to unregistration. */ int do_unregister_con_driver(const struct consw *csw) { int i; /* cannot unregister a bound driver */ if (con_is_bound(csw)) return -EBUSY; if (csw == conswitchp) return -EINVAL; for (i = 0; i < MAX_NR_CON_DRIVER; i++) { struct con_driver *con_driver = ®istered_con_driver[i]; if (con_driver->con == csw) { /* * Defer the removal of the sysfs entries since that * will acquire the kernfs s_active lock and we can't * acquire this lock while holding the console lock: * the unbind sysfs entry imposes already the opposite * order. Reset con already here to prevent any later * lookup to succeed and mark this slot as zombie, so * it won't get reused until we complete the removal * in the deferred work. */ con_driver->con = NULL; con_driver->flag = CON_DRIVER_FLAG_ZOMBIE; schedule_work(&con_driver_unregister_work); return 0; } } return -ENODEV; } EXPORT_SYMBOL_GPL(do_unregister_con_driver); static void con_driver_unregister_callback(struct work_struct *ignored) { int i; console_lock(); for (i = 0; i < MAX_NR_CON_DRIVER; i++) { struct con_driver *con_driver = ®istered_con_driver[i]; if (!(con_driver->flag & CON_DRIVER_FLAG_ZOMBIE)) continue; console_unlock(); vtconsole_deinit_device(con_driver); device_destroy(&vtconsole_class, MKDEV(0, con_driver->node)); console_lock(); if (WARN_ON_ONCE(con_driver->con)) con_driver->con = NULL; con_driver->desc = NULL; con_driver->dev = NULL; con_driver->node = 0; WARN_ON_ONCE(con_driver->flag != CON_DRIVER_FLAG_ZOMBIE); con_driver->flag = 0; con_driver->first = 0; con_driver->last = 0; } console_unlock(); } /* * If we support more console drivers, this function is used * when a driver wants to take over some existing consoles * and become default driver for newly opened ones. * * do_take_over_console is basically a register followed by bind */ int do_take_over_console(const struct consw *csw, int first, int last, int deflt) { int err; err = do_register_con_driver(csw, first, last); /* * If we get an busy error we still want to bind the console driver * and return success, as we may have unbound the console driver * but not unregistered it. */ if (err == -EBUSY) err = 0; if (!err) do_bind_con_driver(csw, first, last, deflt); return err; } EXPORT_SYMBOL_GPL(do_take_over_console); /* * give_up_console is a wrapper to unregister_con_driver. It will only * work if driver is fully unbound. */ void give_up_console(const struct consw *csw) { console_lock(); do_unregister_con_driver(csw); console_unlock(); } EXPORT_SYMBOL(give_up_console); static int __init vtconsole_class_init(void) { int i; i = class_register(&vtconsole_class); if (i) pr_warn("Unable to create vt console class; errno = %d\n", i); /* Add system drivers to sysfs */ for (i = 0; i < MAX_NR_CON_DRIVER; i++) { struct con_driver *con = ®istered_con_driver[i]; if (con->con && !con->dev) { con->dev = device_create_with_groups(&vtconsole_class, NULL, MKDEV(0, con->node), con, con_dev_groups, "vtcon%i", con->node); if (IS_ERR(con->dev)) { pr_warn("Unable to create device for %s; errno = %ld\n", con->desc, PTR_ERR(con->dev)); con->dev = NULL; } else { vtconsole_init_device(con); } } } return 0; } postcore_initcall(vtconsole_class_init); /* * Screen blanking */ static int set_vesa_blanking(u8 __user *mode_user) { u8 mode; if (get_user(mode, mode_user)) return -EFAULT; console_lock(); vesa_blank_mode = (mode <= VESA_BLANK_MAX) ? mode : VESA_NO_BLANKING; console_unlock(); return 0; } void do_blank_screen(int entering_gfx) { struct vc_data *vc = vc_cons[fg_console].d; int i; might_sleep(); WARN_CONSOLE_UNLOCKED(); if (console_blanked) { if (blank_state == blank_vesa_wait) { blank_state = blank_off; vc->vc_sw->con_blank(vc, vesa_blank_mode + 1, 0); } return; } /* entering graphics mode? */ if (entering_gfx) { hide_cursor(vc); save_screen(vc); vc->vc_sw->con_blank(vc, VESA_VSYNC_SUSPEND, 1); console_blanked = fg_console + 1; blank_state = blank_off; set_origin(vc); return; } blank_state = blank_off; /* don't blank graphics */ if (vc->vc_mode != KD_TEXT) { console_blanked = fg_console + 1; return; } hide_cursor(vc); timer_delete_sync(&console_timer); blank_timer_expired = 0; save_screen(vc); /* In case we need to reset origin, blanking hook returns 1 */ i = vc->vc_sw->con_blank(vc, vesa_off_interval ? VESA_VSYNC_SUSPEND : (vesa_blank_mode + 1), 0); console_blanked = fg_console + 1; if (i) set_origin(vc); if (console_blank_hook && console_blank_hook(1)) return; if (vesa_off_interval && vesa_blank_mode) { blank_state = blank_vesa_wait; mod_timer(&console_timer, jiffies + vesa_off_interval); } vt_event_post(VT_EVENT_BLANK, vc->vc_num, vc->vc_num); } EXPORT_SYMBOL(do_blank_screen); /* * Called by timer as well as from vt_console_driver */ void do_unblank_screen(int leaving_gfx) { struct vc_data *vc; /* This should now always be called from a "sane" (read: can schedule) * context for the sake of the low level drivers, except in the special * case of oops_in_progress */ if (!oops_in_progress) might_sleep(); WARN_CONSOLE_UNLOCKED(); ignore_poke = 0; if (!console_blanked) return; if (!vc_cons_allocated(fg_console)) { /* impossible */ pr_warn("unblank_screen: tty %d not allocated ??\n", fg_console + 1); return; } vc = vc_cons[fg_console].d; if (vc->vc_mode != KD_TEXT) return; /* but leave console_blanked != 0 */ if (blankinterval) { mod_timer(&console_timer, jiffies + (blankinterval * HZ)); blank_state = blank_normal_wait; } console_blanked = 0; if (vc->vc_sw->con_blank(vc, VESA_NO_BLANKING, leaving_gfx)) /* Low-level driver cannot restore -> do it ourselves */ update_screen(vc); if (console_blank_hook) console_blank_hook(0); set_palette(vc); set_cursor(vc); vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num); } EXPORT_SYMBOL(do_unblank_screen); /* * This is called by the outside world to cause a forced unblank, mostly for * oopses. Currently, I just call do_unblank_screen(0), but we could eventually * call it with 1 as an argument and so force a mode restore... that may kill * X or at least garbage the screen but would also make the Oops visible... */ static void unblank_screen(void) { do_unblank_screen(0); } /* * We defer the timer blanking to work queue so it can take the console mutex * (console operations can still happen at irq time, but only from printk which * has the console mutex. Not perfect yet, but better than no locking */ static void blank_screen_t(struct timer_list *unused) { blank_timer_expired = 1; schedule_work(&console_work); } void poke_blanked_console(void) { WARN_CONSOLE_UNLOCKED(); /* Add this so we quickly catch whoever might call us in a non * safe context. Nowadays, unblank_screen() isn't to be called in * atomic contexts and is allowed to schedule (with the special case * of oops_in_progress, but that isn't of any concern for this * function. --BenH. */ might_sleep(); /* This isn't perfectly race free, but a race here would be mostly harmless, * at worst, we'll do a spurious blank and it's unlikely */ timer_delete(&console_timer); blank_timer_expired = 0; if (ignore_poke || !vc_cons[fg_console].d || vc_cons[fg_console].d->vc_mode == KD_GRAPHICS) return; if (console_blanked) unblank_screen(); else if (blankinterval) { mod_timer(&console_timer, jiffies + (blankinterval * HZ)); blank_state = blank_normal_wait; } } /* * Palettes */ static void set_palette(struct vc_data *vc) { WARN_CONSOLE_UNLOCKED(); if (vc->vc_mode != KD_GRAPHICS && vc->vc_sw->con_set_palette) vc->vc_sw->con_set_palette(vc, color_table); } /* * Load palette into the DAC registers. arg points to a colour * map, 3 bytes per colour, 16 colours, range from 0 to 255. */ int con_set_cmap(unsigned char __user *arg) { int i, j, k; unsigned char colormap[3*16]; if (copy_from_user(colormap, arg, sizeof(colormap))) return -EFAULT; console_lock(); for (i = k = 0; i < 16; i++) { default_red[i] = colormap[k++]; default_grn[i] = colormap[k++]; default_blu[i] = colormap[k++]; } for (i = 0; i < MAX_NR_CONSOLES; i++) { if (!vc_cons_allocated(i)) continue; for (j = k = 0; j < 16; j++) { vc_cons[i].d->vc_palette[k++] = default_red[j]; vc_cons[i].d->vc_palette[k++] = default_grn[j]; vc_cons[i].d->vc_palette[k++] = default_blu[j]; } set_palette(vc_cons[i].d); } console_unlock(); return 0; } int con_get_cmap(unsigned char __user *arg) { int i, k; unsigned char colormap[3*16]; console_lock(); for (i = k = 0; i < 16; i++) { colormap[k++] = default_red[i]; colormap[k++] = default_grn[i]; colormap[k++] = default_blu[i]; } console_unlock(); if (copy_to_user(arg, colormap, sizeof(colormap))) return -EFAULT; return 0; } void reset_palette(struct vc_data *vc) { int j, k; for (j=k=0; j<16; j++) { vc->vc_palette[k++] = default_red[j]; vc->vc_palette[k++] = default_grn[j]; vc->vc_palette[k++] = default_blu[j]; } set_palette(vc); } /* * Font switching * * Currently we only support fonts up to 128 pixels wide, at a maximum height * of 128 pixels. Userspace fontdata may have to be stored with 32 bytes * (shorts/ints, depending on width) reserved for each character which is * kinda wasty, but this is done in order to maintain compatibility with the * EGA/VGA fonts. It is up to the actual low-level console-driver convert data * into its favorite format (maybe we should add a `fontoffset' field to the * `display' structure so we won't have to convert the fontdata all the time. * /Jes */ #define max_font_width 64 #define max_font_height 128 #define max_font_glyphs 512 #define max_font_size (max_font_glyphs*max_font_width*max_font_height) static int con_font_get(struct vc_data *vc, struct console_font_op *op) { struct console_font font; int rc = -EINVAL; int c; unsigned int vpitch = op->op == KD_FONT_OP_GET_TALL ? op->height : 32; if (vpitch > max_font_height) return -EINVAL; if (op->data) { font.data = kvzalloc(max_font_size, GFP_KERNEL); if (!font.data) return -ENOMEM; } else font.data = NULL; console_lock(); if (vc->vc_mode != KD_TEXT) rc = -EINVAL; else if (vc->vc_sw->con_font_get) rc = vc->vc_sw->con_font_get(vc, &font, vpitch); else rc = -ENOSYS; console_unlock(); if (rc) goto out; c = (font.width+7)/8 * vpitch * font.charcount; if (op->data && font.charcount > op->charcount) rc = -ENOSPC; if (font.width > op->width || font.height > op->height) rc = -ENOSPC; if (rc) goto out; op->height = font.height; op->width = font.width; op->charcount = font.charcount; if (op->data && copy_to_user(op->data, font.data, c)) rc = -EFAULT; out: kvfree(font.data); return rc; } static int con_font_set(struct vc_data *vc, const struct console_font_op *op) { struct console_font font; int rc = -EINVAL; int size; unsigned int vpitch = op->op == KD_FONT_OP_SET_TALL ? op->height : 32; if (vc->vc_mode != KD_TEXT) return -EINVAL; if (!op->data) return -EINVAL; if (op->charcount > max_font_glyphs) return -EINVAL; if (op->width <= 0 || op->width > max_font_width || !op->height || op->height > max_font_height) return -EINVAL; if (vpitch < op->height) return -EINVAL; size = (op->width+7)/8 * vpitch * op->charcount; if (size > max_font_size) return -ENOSPC; font.data = memdup_user(op->data, size); if (IS_ERR(font.data)) return PTR_ERR(font.data); font.charcount = op->charcount; font.width = op->width; font.height = op->height; console_lock(); if (vc->vc_mode != KD_TEXT) rc = -EINVAL; else if (vc->vc_sw->con_font_set) { if (vc_is_sel(vc)) clear_selection(); rc = vc->vc_sw->con_font_set(vc, &font, vpitch, op->flags); } else rc = -ENOSYS; console_unlock(); kfree(font.data); return rc; } static int con_font_default(struct vc_data *vc, struct console_font_op *op) { struct console_font font = {.width = op->width, .height = op->height}; char name[MAX_FONT_NAME]; char *s = name; int rc; if (!op->data) s = NULL; else if (strncpy_from_user(name, op->data, MAX_FONT_NAME - 1) < 0) return -EFAULT; else name[MAX_FONT_NAME - 1] = 0; console_lock(); if (vc->vc_mode != KD_TEXT) { console_unlock(); return -EINVAL; } if (vc->vc_sw->con_font_default) { if (vc_is_sel(vc)) clear_selection(); rc = vc->vc_sw->con_font_default(vc, &font, s); } else rc = -ENOSYS; console_unlock(); if (!rc) { op->width = font.width; op->height = font.height; } return rc; } int con_font_op(struct vc_data *vc, struct console_font_op *op) { switch (op->op) { case KD_FONT_OP_SET: case KD_FONT_OP_SET_TALL: return con_font_set(vc, op); case KD_FONT_OP_GET: case KD_FONT_OP_GET_TALL: return con_font_get(vc, op); case KD_FONT_OP_SET_DEFAULT: return con_font_default(vc, op); case KD_FONT_OP_COPY: /* was buggy and never really used */ return -EINVAL; } return -ENOSYS; } /* * Interface exported to selection and vcs. */ /* used by selection */ u16 screen_glyph(const struct vc_data *vc, int offset) { u16 w = scr_readw(screenpos(vc, offset, true)); u16 c = w & 0xff; if (w & vc->vc_hi_font_mask) c |= 0x100; return c; } EXPORT_SYMBOL_GPL(screen_glyph); u32 screen_glyph_unicode(const struct vc_data *vc, int n) { u32 **uni_lines = vc->vc_uni_lines; if (uni_lines) return uni_lines[n / vc->vc_cols][n % vc->vc_cols]; return inverse_translate(vc, screen_glyph(vc, n * 2), true); } EXPORT_SYMBOL_GPL(screen_glyph_unicode); /* used by vcs - note the word offset */ unsigned short *screen_pos(const struct vc_data *vc, int w_offset, bool viewed) { return screenpos(vc, 2 * w_offset, viewed); } EXPORT_SYMBOL_GPL(screen_pos); void getconsxy(const struct vc_data *vc, unsigned char xy[static 2]) { /* clamp values if they don't fit */ xy[0] = min(vc->state.x, 0xFFu); xy[1] = min(vc->state.y, 0xFFu); } void putconsxy(struct vc_data *vc, unsigned char xy[static const 2]) { hide_cursor(vc); gotoxy(vc, xy[0], xy[1]); set_cursor(vc); } u16 vcs_scr_readw(const struct vc_data *vc, const u16 *org) { if ((unsigned long)org == vc->vc_pos && softcursor_original != -1) return softcursor_original; return scr_readw(org); } void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org) { scr_writew(val, org); if ((unsigned long)org == vc->vc_pos) { softcursor_original = -1; add_softcursor(vc); } } void vcs_scr_updated(struct vc_data *vc) { notify_update(vc); } |
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3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 | // SPDX-License-Identifier: GPL-2.0-or-later /* cx231xx_avcore.c - driver for Conexant Cx23100/101/102 USB video capture devices Copyright (C) 2008 <srinivasa.deevi at conexant dot com> This program contains the specific code to control the avdecoder chip and other related usb control functions for cx231xx based chipset. */ #include "cx231xx.h" #include <linux/init.h> #include <linux/list.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/bitmap.h> #include <linux/i2c.h> #include <linux/mm.h> #include <linux/mutex.h> #include <media/tuner.h> #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include "cx231xx-dif.h" #define TUNER_MODE_FM_RADIO 0 /****************************************************************************** -: BLOCK ARRANGEMENT :- I2S block ----------------------| [I2S audio] | | Analog Front End --> Direct IF -|-> Cx25840 --> Audio [video & audio] | [Audio] | |-> Cx25840 --> Video [Video] *******************************************************************************/ /****************************************************************************** * VERVE REGISTER * * * ******************************************************************************/ static int verve_write_byte(struct cx231xx *dev, u8 saddr, u8 data) { return cx231xx_write_i2c_data(dev, VERVE_I2C_ADDRESS, saddr, 1, data, 1); } static int verve_read_byte(struct cx231xx *dev, u8 saddr, u8 *data) { int status; u32 temp = 0; status = cx231xx_read_i2c_data(dev, VERVE_I2C_ADDRESS, saddr, 1, &temp, 1); *data = (u8) temp; return status; } void initGPIO(struct cx231xx *dev) { u32 _gpio_direction = 0; u32 value = 0; u8 val = 0; _gpio_direction = _gpio_direction & 0xFC0003FF; _gpio_direction = _gpio_direction | 0x03FDFC00; cx231xx_send_gpio_cmd(dev, _gpio_direction, (u8 *)&value, 4, 0, 0); verve_read_byte(dev, 0x07, &val); dev_dbg(dev->dev, "verve_read_byte address0x07=0x%x\n", val); verve_write_byte(dev, 0x07, 0xF4); verve_read_byte(dev, 0x07, &val); dev_dbg(dev->dev, "verve_read_byte address0x07=0x%x\n", val); cx231xx_capture_start(dev, 1, Vbi); cx231xx_mode_register(dev, EP_MODE_SET, 0x0500FE00); cx231xx_mode_register(dev, GBULK_BIT_EN, 0xFFFDFFFF); } void uninitGPIO(struct cx231xx *dev) { u8 value[4] = { 0, 0, 0, 0 }; cx231xx_capture_start(dev, 0, Vbi); verve_write_byte(dev, 0x07, 0x14); cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, 0x68, value, 4); } /****************************************************************************** * A F E - B L O C K C O N T R O L functions * * [ANALOG FRONT END] * ******************************************************************************/ static int afe_write_byte(struct cx231xx *dev, u16 saddr, u8 data) { return cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, saddr, 2, data, 1); } static int afe_read_byte(struct cx231xx *dev, u16 saddr, u8 *data) { int status; u32 temp = 0; status = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, saddr, 2, &temp, 1); *data = (u8) temp; return status; } int cx231xx_afe_init_super_block(struct cx231xx *dev, u32 ref_count) { int status = 0; u8 temp = 0; u8 afe_power_status = 0; int i = 0; /* super block initialize */ temp = (u8) (ref_count & 0xff); status = afe_write_byte(dev, SUP_BLK_TUNE2, temp); if (status < 0) return status; status = afe_read_byte(dev, SUP_BLK_TUNE2, &afe_power_status); if (status < 0) return status; temp = (u8) ((ref_count & 0x300) >> 8); temp |= 0x40; status = afe_write_byte(dev, SUP_BLK_TUNE1, temp); if (status < 0) return status; status = afe_write_byte(dev, SUP_BLK_PLL2, 0x0f); if (status < 0) return status; /* enable pll */ while (afe_power_status != 0x18) { status = afe_write_byte(dev, SUP_BLK_PWRDN, 0x18); if (status < 0) { dev_dbg(dev->dev, "%s: Init Super Block failed in send cmd\n", __func__); break; } status = afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status); afe_power_status &= 0xff; if (status < 0) { dev_dbg(dev->dev, "%s: Init Super Block failed in receive cmd\n", __func__); break; } i++; if (i == 10) { dev_dbg(dev->dev, "%s: Init Super Block force break in loop !!!!\n", __func__); status = -1; break; } } if (status < 0) return status; /* start tuning filter */ status = afe_write_byte(dev, SUP_BLK_TUNE3, 0x40); if (status < 0) return status; msleep(5); /* exit tuning */ status = afe_write_byte(dev, SUP_BLK_TUNE3, 0x00); return status; } int cx231xx_afe_init_channels(struct cx231xx *dev) { int status = 0; /* power up all 3 channels, clear pd_buffer */ status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x00); status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x00); status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x00); /* Enable quantizer calibration */ status = afe_write_byte(dev, ADC_COM_QUANT, 0x02); /* channel initialize, force modulator (fb) reset */ status = afe_write_byte(dev, ADC_FB_FRCRST_CH1, 0x17); status = afe_write_byte(dev, ADC_FB_FRCRST_CH2, 0x17); status = afe_write_byte(dev, ADC_FB_FRCRST_CH3, 0x17); /* start quantilizer calibration */ status = afe_write_byte(dev, ADC_CAL_ATEST_CH1, 0x10); status = afe_write_byte(dev, ADC_CAL_ATEST_CH2, 0x10); status = afe_write_byte(dev, ADC_CAL_ATEST_CH3, 0x10); msleep(5); /* exit modulator (fb) reset */ status = afe_write_byte(dev, ADC_FB_FRCRST_CH1, 0x07); status = afe_write_byte(dev, ADC_FB_FRCRST_CH2, 0x07); status = afe_write_byte(dev, ADC_FB_FRCRST_CH3, 0x07); /* enable the pre_clamp in each channel for single-ended input */ status = afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH1, 0xf0); status = afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH2, 0xf0); status = afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH3, 0xf0); /* use diode instead of resistor, so set term_en to 0, res_en to 0 */ status = cx231xx_reg_mask_write(dev, AFE_DEVICE_ADDRESS, 8, ADC_QGAIN_RES_TRM_CH1, 3, 7, 0x00); status = cx231xx_reg_mask_write(dev, AFE_DEVICE_ADDRESS, 8, ADC_QGAIN_RES_TRM_CH2, 3, 7, 0x00); status = cx231xx_reg_mask_write(dev, AFE_DEVICE_ADDRESS, 8, ADC_QGAIN_RES_TRM_CH3, 3, 7, 0x00); /* dynamic element matching off */ status = afe_write_byte(dev, ADC_DCSERVO_DEM_CH1, 0x03); status = afe_write_byte(dev, ADC_DCSERVO_DEM_CH2, 0x03); status = afe_write_byte(dev, ADC_DCSERVO_DEM_CH3, 0x03); return status; } int cx231xx_afe_setup_AFE_for_baseband(struct cx231xx *dev) { u8 c_value = 0; int status = 0; status = afe_read_byte(dev, ADC_PWRDN_CLAMP_CH2, &c_value); c_value &= (~(0x50)); status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, c_value); return status; } /* The Analog Front End in Cx231xx has 3 channels. These channels are used to share between different inputs like tuner, s-video and composite inputs. channel 1 ----- pin 1 to pin4(in reg is 1-4) channel 2 ----- pin 5 to pin8(in reg is 5-8) channel 3 ----- pin 9 to pin 12(in reg is 9-11) */ int cx231xx_afe_set_input_mux(struct cx231xx *dev, u32 input_mux) { u8 ch1_setting = (u8) input_mux; u8 ch2_setting = (u8) (input_mux >> 8); u8 ch3_setting = (u8) (input_mux >> 16); int status = 0; u8 value = 0; if (ch1_setting != 0) { status = afe_read_byte(dev, ADC_INPUT_CH1, &value); value &= ~INPUT_SEL_MASK; value |= (ch1_setting - 1) << 4; value &= 0xff; status = afe_write_byte(dev, ADC_INPUT_CH1, value); } if (ch2_setting != 0) { status = afe_read_byte(dev, ADC_INPUT_CH2, &value); value &= ~INPUT_SEL_MASK; value |= (ch2_setting - 1) << 4; value &= 0xff; status = afe_write_byte(dev, ADC_INPUT_CH2, value); } /* For ch3_setting, the value to put in the register is 7 less than the input number */ if (ch3_setting != 0) { status = afe_read_byte(dev, ADC_INPUT_CH3, &value); value &= ~INPUT_SEL_MASK; value |= (ch3_setting - 1) << 4; value &= 0xff; status = afe_write_byte(dev, ADC_INPUT_CH3, value); } return status; } int cx231xx_afe_set_mode(struct cx231xx *dev, enum AFE_MODE mode) { int status = 0; /* * FIXME: We need to implement the AFE code for LOW IF and for HI IF. * Currently, only baseband works. */ switch (mode) { case AFE_MODE_LOW_IF: cx231xx_Setup_AFE_for_LowIF(dev); break; case AFE_MODE_BASEBAND: status = cx231xx_afe_setup_AFE_for_baseband(dev); break; case AFE_MODE_EU_HI_IF: /* SetupAFEforEuHiIF(); */ break; case AFE_MODE_US_HI_IF: /* SetupAFEforUsHiIF(); */ break; case AFE_MODE_JAPAN_HI_IF: /* SetupAFEforJapanHiIF(); */ break; } if ((mode != dev->afe_mode) && (dev->video_input == CX231XX_VMUX_TELEVISION)) status = cx231xx_afe_adjust_ref_count(dev, CX231XX_VMUX_TELEVISION); dev->afe_mode = mode; return status; } int cx231xx_afe_update_power_control(struct cx231xx *dev, enum AV_MODE avmode) { u8 afe_power_status = 0; int status = 0; switch (dev->model) { case CX231XX_BOARD_CNXT_CARRAERA: case CX231XX_BOARD_CNXT_RDE_250: case CX231XX_BOARD_CNXT_SHELBY: case CX231XX_BOARD_CNXT_RDU_250: case CX231XX_BOARD_CNXT_RDE_253S: case CX231XX_BOARD_CNXT_RDU_253S: case CX231XX_BOARD_CNXT_VIDEO_GRABBER: case CX231XX_BOARD_HAUPPAUGE_EXETER: case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx: case CX231XX_BOARD_HAUPPAUGE_USBLIVE2: case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC: case CX231XX_BOARD_OTG102: if (avmode == POLARIS_AVMODE_ANALOGT_TV) { while (afe_power_status != (FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL)) { status = afe_write_byte(dev, SUP_BLK_PWRDN, FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL); status |= afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status); if (status < 0) break; } status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x00); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x00); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x00); } else if (avmode == POLARIS_AVMODE_DIGITAL) { status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x70); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x70); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x70); status |= afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status); afe_power_status |= FLD_PWRDN_PD_BANDGAP | FLD_PWRDN_PD_BIAS | FLD_PWRDN_PD_TUNECK; status |= afe_write_byte(dev, SUP_BLK_PWRDN, afe_power_status); } else if (avmode == POLARIS_AVMODE_ENXTERNAL_AV) { while (afe_power_status != (FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL)) { status = afe_write_byte(dev, SUP_BLK_PWRDN, FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL); status |= afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status); if (status < 0) break; } status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x00); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x00); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x00); } else { dev_dbg(dev->dev, "Invalid AV mode input\n"); status = -1; } break; default: if (avmode == POLARIS_AVMODE_ANALOGT_TV) { while (afe_power_status != (FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL)) { status = afe_write_byte(dev, SUP_BLK_PWRDN, FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL); status |= afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status); if (status < 0) break; } status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x40); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x40); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x00); } else if (avmode == POLARIS_AVMODE_DIGITAL) { status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x70); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x70); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x70); status |= afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status); afe_power_status |= FLD_PWRDN_PD_BANDGAP | FLD_PWRDN_PD_BIAS | FLD_PWRDN_PD_TUNECK; status |= afe_write_byte(dev, SUP_BLK_PWRDN, afe_power_status); } else if (avmode == POLARIS_AVMODE_ENXTERNAL_AV) { while (afe_power_status != (FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL)) { status = afe_write_byte(dev, SUP_BLK_PWRDN, FLD_PWRDN_TUNING_BIAS | FLD_PWRDN_ENABLE_PLL); status |= afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status); if (status < 0) break; } status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x00); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x00); status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x40); } else { dev_dbg(dev->dev, "Invalid AV mode input\n"); status = -1; } } /* switch */ return status; } int cx231xx_afe_adjust_ref_count(struct cx231xx *dev, u32 video_input) { u8 input_mode = 0; u8 ntf_mode = 0; int status = 0; dev->video_input = video_input; if (video_input == CX231XX_VMUX_TELEVISION) { status = afe_read_byte(dev, ADC_INPUT_CH3, &input_mode); status = afe_read_byte(dev, ADC_NTF_PRECLMP_EN_CH3, &ntf_mode); } else { status = afe_read_byte(dev, ADC_INPUT_CH1, &input_mode); status = afe_read_byte(dev, ADC_NTF_PRECLMP_EN_CH1, &ntf_mode); } input_mode = (ntf_mode & 0x3) | ((input_mode & 0x6) << 1); switch (input_mode) { case SINGLE_ENDED: dev->afe_ref_count = 0x23C; break; case LOW_IF: dev->afe_ref_count = 0x24C; break; case EU_IF: dev->afe_ref_count = 0x258; break; case US_IF: dev->afe_ref_count = 0x260; break; default: break; } status = cx231xx_afe_init_super_block(dev, dev->afe_ref_count); return status; } /****************************************************************************** * V I D E O / A U D I O D E C O D E R C O N T R O L functions * ******************************************************************************/ static int vid_blk_write_byte(struct cx231xx *dev, u16 saddr, u8 data) { return cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, saddr, 2, data, 1); } static int vid_blk_read_byte(struct cx231xx *dev, u16 saddr, u8 *data) { int status; u32 temp = 0; status = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, saddr, 2, &temp, 1); *data = (u8) temp; return status; } static int vid_blk_write_word(struct cx231xx *dev, u16 saddr, u32 data) { return cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, saddr, 2, data, 4); } static int vid_blk_read_word(struct cx231xx *dev, u16 saddr, u32 *data) { return cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, saddr, 2, data, 4); } int cx231xx_check_fw(struct cx231xx *dev) { u8 temp = 0; int status = 0; status = vid_blk_read_byte(dev, DL_CTL_ADDRESS_LOW, &temp); if (status < 0) return status; else return temp; } int cx231xx_set_video_input_mux(struct cx231xx *dev, u8 input) { int status = 0; switch (INPUT(input)->type) { case CX231XX_VMUX_COMPOSITE1: case CX231XX_VMUX_SVIDEO: if ((dev->current_pcb_config.type == USB_BUS_POWER) && (dev->power_mode != POLARIS_AVMODE_ENXTERNAL_AV)) { /* External AV */ status = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ENXTERNAL_AV); if (status < 0) { dev_err(dev->dev, "%s: Failed to set Power - errCode [%d]!\n", __func__, status); return status; } } status = cx231xx_set_decoder_video_input(dev, INPUT(input)->type, INPUT(input)->vmux); break; case CX231XX_VMUX_TELEVISION: case CX231XX_VMUX_CABLE: if ((dev->current_pcb_config.type == USB_BUS_POWER) && (dev->power_mode != POLARIS_AVMODE_ANALOGT_TV)) { /* Tuner */ status = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV); if (status < 0) { dev_err(dev->dev, "%s: Failed to set Power - errCode [%d]!\n", __func__, status); return status; } } switch (dev->model) { /* i2c device tuners */ case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx: case CX231XX_BOARD_HAUPPAUGE_935C: case CX231XX_BOARD_HAUPPAUGE_955Q: case CX231XX_BOARD_HAUPPAUGE_975: case CX231XX_BOARD_EVROMEDIA_FULL_HYBRID_FULLHD: status = cx231xx_set_decoder_video_input(dev, CX231XX_VMUX_TELEVISION, INPUT(input)->vmux); break; default: if (dev->tuner_type == TUNER_NXP_TDA18271) status = cx231xx_set_decoder_video_input(dev, CX231XX_VMUX_TELEVISION, INPUT(input)->vmux); else status = cx231xx_set_decoder_video_input(dev, CX231XX_VMUX_COMPOSITE1, INPUT(input)->vmux); break; } break; default: dev_err(dev->dev, "%s: Unknown Input %d !\n", __func__, INPUT(input)->type); break; } /* save the selection */ dev->video_input = input; return status; } int cx231xx_set_decoder_video_input(struct cx231xx *dev, u8 pin_type, u32 input) { int status = 0; u32 value = 0; if (pin_type != dev->video_input) { status = cx231xx_afe_adjust_ref_count(dev, pin_type); if (status < 0) { dev_err(dev->dev, "%s: adjust_ref_count :Failed to set AFE input mux - errCode [%d]!\n", __func__, status); return status; } } /* call afe block to set video inputs */ status = cx231xx_afe_set_input_mux(dev, input); if (status < 0) { dev_err(dev->dev, "%s: set_input_mux :Failed to set AFE input mux - errCode [%d]!\n", __func__, status); return status; } switch (pin_type) { case CX231XX_VMUX_COMPOSITE1: status = vid_blk_read_word(dev, AFE_CTRL, &value); value |= (0 << 13) | (1 << 4); value &= ~(1 << 5); /* set [24:23] [22:15] to 0 */ value &= (~(0x1ff8000)); /* set FUNC_MODE[24:23] = 2 IF_MOD[22:15] = 0 */ value |= 0x1000000; status = vid_blk_write_word(dev, AFE_CTRL, value); status = vid_blk_read_word(dev, OUT_CTRL1, &value); value |= (1 << 7); status = vid_blk_write_word(dev, OUT_CTRL1, value); /* Set output mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, OUT_CTRL1, FLD_OUT_MODE, dev->board.output_mode); /* Tell DIF object to go to baseband mode */ status = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND); if (status < 0) { dev_err(dev->dev, "%s: cx231xx_dif set to By pass mode- errCode [%d]!\n", __func__, status); return status; } /* Read the DFE_CTRL1 register */ status = vid_blk_read_word(dev, DFE_CTRL1, &value); /* enable the VBI_GATE_EN */ value |= FLD_VBI_GATE_EN; /* Enable the auto-VGA enable */ value |= FLD_VGA_AUTO_EN; /* Write it back */ status = vid_blk_write_word(dev, DFE_CTRL1, value); /* Disable auto config of registers */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_ACFG_DIS, cx231xx_set_field(FLD_ACFG_DIS, 1)); /* Set CVBS input mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_INPUT_MODE, cx231xx_set_field(FLD_INPUT_MODE, INPUT_MODE_CVBS_0)); break; case CX231XX_VMUX_SVIDEO: /* Disable the use of DIF */ status = vid_blk_read_word(dev, AFE_CTRL, &value); /* set [24:23] [22:15] to 0 */ value &= (~(0x1ff8000)); /* set FUNC_MODE[24:23] = 2 IF_MOD[22:15] = 0 DCR_BYP_CH2[4:4] = 1; */ value |= 0x1000010; status = vid_blk_write_word(dev, AFE_CTRL, value); /* Tell DIF object to go to baseband mode */ status = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND); if (status < 0) { dev_err(dev->dev, "%s: cx231xx_dif set to By pass mode- errCode [%d]!\n", __func__, status); return status; } /* Read the DFE_CTRL1 register */ status = vid_blk_read_word(dev, DFE_CTRL1, &value); /* enable the VBI_GATE_EN */ value |= FLD_VBI_GATE_EN; /* Enable the auto-VGA enable */ value |= FLD_VGA_AUTO_EN; /* Write it back */ status = vid_blk_write_word(dev, DFE_CTRL1, value); /* Disable auto config of registers */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_ACFG_DIS, cx231xx_set_field(FLD_ACFG_DIS, 1)); /* Set YC input mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_INPUT_MODE, cx231xx_set_field(FLD_INPUT_MODE, INPUT_MODE_YC_1)); /* Chroma to ADC2 */ status = vid_blk_read_word(dev, AFE_CTRL, &value); value |= FLD_CHROMA_IN_SEL; /* set the chroma in select */ /* Clear VGA_SEL_CH2 and VGA_SEL_CH3 (bits 7 and 8) This sets them to use video rather than audio. Only one of the two will be in use. */ value &= ~(FLD_VGA_SEL_CH2 | FLD_VGA_SEL_CH3); status = vid_blk_write_word(dev, AFE_CTRL, value); status = cx231xx_afe_set_mode(dev, AFE_MODE_BASEBAND); break; case CX231XX_VMUX_TELEVISION: case CX231XX_VMUX_CABLE: default: /* TODO: Test if this is also needed for xc2028/xc3028 */ if (dev->board.tuner_type == TUNER_XC5000) { /* Disable the use of DIF */ status = vid_blk_read_word(dev, AFE_CTRL, &value); value |= (0 << 13) | (1 << 4); value &= ~(1 << 5); /* set [24:23] [22:15] to 0 */ value &= (~(0x1FF8000)); /* set FUNC_MODE[24:23] = 2 IF_MOD[22:15] = 0 */ value |= 0x1000000; status = vid_blk_write_word(dev, AFE_CTRL, value); status = vid_blk_read_word(dev, OUT_CTRL1, &value); value |= (1 << 7); status = vid_blk_write_word(dev, OUT_CTRL1, value); /* Set output mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, OUT_CTRL1, FLD_OUT_MODE, dev->board.output_mode); /* Tell DIF object to go to baseband mode */ status = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND); if (status < 0) { dev_err(dev->dev, "%s: cx231xx_dif set to By pass mode- errCode [%d]!\n", __func__, status); return status; } /* Read the DFE_CTRL1 register */ status = vid_blk_read_word(dev, DFE_CTRL1, &value); /* enable the VBI_GATE_EN */ value |= FLD_VBI_GATE_EN; /* Enable the auto-VGA enable */ value |= FLD_VGA_AUTO_EN; /* Write it back */ status = vid_blk_write_word(dev, DFE_CTRL1, value); /* Disable auto config of registers */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_ACFG_DIS, cx231xx_set_field(FLD_ACFG_DIS, 1)); /* Set CVBS input mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_INPUT_MODE, cx231xx_set_field(FLD_INPUT_MODE, INPUT_MODE_CVBS_0)); } else { /* Enable the DIF for the tuner */ /* Reinitialize the DIF */ status = cx231xx_dif_set_standard(dev, dev->norm); if (status < 0) { dev_err(dev->dev, "%s: cx231xx_dif set to By pass mode- errCode [%d]!\n", __func__, status); return status; } /* Make sure bypass is cleared */ status = vid_blk_read_word(dev, DIF_MISC_CTRL, &value); /* Clear the bypass bit */ value &= ~FLD_DIF_DIF_BYPASS; /* Enable the use of the DIF block */ status = vid_blk_write_word(dev, DIF_MISC_CTRL, value); /* Read the DFE_CTRL1 register */ status = vid_blk_read_word(dev, DFE_CTRL1, &value); /* Disable the VBI_GATE_EN */ value &= ~FLD_VBI_GATE_EN; /* Enable the auto-VGA enable, AGC, and set the skip count to 2 */ value |= FLD_VGA_AUTO_EN | FLD_AGC_AUTO_EN | 0x00200000; /* Write it back */ status = vid_blk_write_word(dev, DFE_CTRL1, value); /* Wait until AGC locks up */ msleep(1); /* Disable the auto-VGA enable AGC */ value &= ~(FLD_VGA_AUTO_EN); /* Write it back */ status = vid_blk_write_word(dev, DFE_CTRL1, value); /* Enable Polaris B0 AGC output */ status = vid_blk_read_word(dev, PIN_CTRL, &value); value |= (FLD_OEF_AGC_RF) | (FLD_OEF_AGC_IFVGA) | (FLD_OEF_AGC_IF); status = vid_blk_write_word(dev, PIN_CTRL, value); /* Set output mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, OUT_CTRL1, FLD_OUT_MODE, dev->board.output_mode); /* Disable auto config of registers */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_ACFG_DIS, cx231xx_set_field(FLD_ACFG_DIS, 1)); /* Set CVBS input mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, MODE_CTRL, FLD_INPUT_MODE, cx231xx_set_field(FLD_INPUT_MODE, INPUT_MODE_CVBS_0)); /* Set some bits in AFE_CTRL so that channel 2 or 3 * is ready to receive audio */ /* Clear clamp for channels 2 and 3 (bit 16-17) */ /* Clear droop comp (bit 19-20) */ /* Set VGA_SEL (for audio control) (bit 7-8) */ status = vid_blk_read_word(dev, AFE_CTRL, &value); /*Set Func mode:01-DIF 10-baseband 11-YUV*/ value &= (~(FLD_FUNC_MODE)); value |= 0x800000; value |= FLD_VGA_SEL_CH3 | FLD_VGA_SEL_CH2; status = vid_blk_write_word(dev, AFE_CTRL, value); if (dev->tuner_type == TUNER_NXP_TDA18271) { status = vid_blk_read_word(dev, PIN_CTRL, &value); status = vid_blk_write_word(dev, PIN_CTRL, (value & 0xFFFFFFEF)); } break; } break; } /* Set raw VBI mode */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, OUT_CTRL1, FLD_VBIHACTRAW_EN, cx231xx_set_field(FLD_VBIHACTRAW_EN, 1)); status = vid_blk_read_word(dev, OUT_CTRL1, &value); if (value & 0x02) { value |= (1 << 19); status = vid_blk_write_word(dev, OUT_CTRL1, value); } return status; } void cx231xx_enable656(struct cx231xx *dev) { u8 temp = 0; /*enable TS1 data[0:7] as output to export 656*/ vid_blk_write_byte(dev, TS1_PIN_CTL0, 0xFF); /*enable TS1 clock as output to export 656*/ vid_blk_read_byte(dev, TS1_PIN_CTL1, &temp); temp = temp|0x04; vid_blk_write_byte(dev, TS1_PIN_CTL1, temp); } EXPORT_SYMBOL_GPL(cx231xx_enable656); void cx231xx_disable656(struct cx231xx *dev) { u8 temp = 0; vid_blk_write_byte(dev, TS1_PIN_CTL0, 0x00); vid_blk_read_byte(dev, TS1_PIN_CTL1, &temp); temp = temp&0xFB; vid_blk_write_byte(dev, TS1_PIN_CTL1, temp); } EXPORT_SYMBOL_GPL(cx231xx_disable656); /* * Handle any video-mode specific overrides that are different * on a per video standards basis after touching the MODE_CTRL * register which resets many values for autodetect */ int cx231xx_do_mode_ctrl_overrides(struct cx231xx *dev) { int status = 0; dev_dbg(dev->dev, "%s: 0x%x\n", __func__, (unsigned int)dev->norm); /* Change the DFE_CTRL3 bp_percent to fix flagging */ status = vid_blk_write_word(dev, DFE_CTRL3, 0xCD3F0280); if (dev->norm & (V4L2_STD_NTSC | V4L2_STD_PAL_M)) { dev_dbg(dev->dev, "%s: NTSC\n", __func__); /* Move the close caption lines out of active video, adjust the active video start point */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_VBLANK_CNT, 0x18); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_VACTIVE_CNT, 0x1E7000); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_V656BLANK_CNT, 0x1C000000); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, HORIZ_TIM_CTRL, FLD_HBLANK_CNT, cx231xx_set_field (FLD_HBLANK_CNT, 0x79)); } else if (dev->norm & V4L2_STD_SECAM) { dev_dbg(dev->dev, "%s: SECAM\n", __func__); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_VBLANK_CNT, 0x20); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_VACTIVE_CNT, cx231xx_set_field (FLD_VACTIVE_CNT, 0x244)); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_V656BLANK_CNT, cx231xx_set_field (FLD_V656BLANK_CNT, 0x24)); /* Adjust the active video horizontal start point */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, HORIZ_TIM_CTRL, FLD_HBLANK_CNT, cx231xx_set_field (FLD_HBLANK_CNT, 0x85)); } else { dev_dbg(dev->dev, "%s: PAL\n", __func__); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_VBLANK_CNT, 0x20); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_VACTIVE_CNT, cx231xx_set_field (FLD_VACTIVE_CNT, 0x244)); status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, VERT_TIM_CTRL, FLD_V656BLANK_CNT, cx231xx_set_field (FLD_V656BLANK_CNT, 0x24)); /* Adjust the active video horizontal start point */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, HORIZ_TIM_CTRL, FLD_HBLANK_CNT, cx231xx_set_field (FLD_HBLANK_CNT, 0x85)); } return status; } int cx231xx_unmute_audio(struct cx231xx *dev) { return vid_blk_write_byte(dev, PATH1_VOL_CTL, 0x24); } EXPORT_SYMBOL_GPL(cx231xx_unmute_audio); static int stopAudioFirmware(struct cx231xx *dev) { return vid_blk_write_byte(dev, DL_CTL_CONTROL, 0x03); } static int restartAudioFirmware(struct cx231xx *dev) { return vid_blk_write_byte(dev, DL_CTL_CONTROL, 0x13); } int cx231xx_set_audio_input(struct cx231xx *dev, u8 input) { int status = 0; enum AUDIO_INPUT ainput = AUDIO_INPUT_LINE; switch (INPUT(input)->amux) { case CX231XX_AMUX_VIDEO: ainput = AUDIO_INPUT_TUNER_TV; break; case CX231XX_AMUX_LINE_IN: status = cx231xx_i2s_blk_set_audio_input(dev, input); ainput = AUDIO_INPUT_LINE; break; default: break; } status = cx231xx_set_audio_decoder_input(dev, ainput); return status; } int cx231xx_set_audio_decoder_input(struct cx231xx *dev, enum AUDIO_INPUT audio_input) { u32 dwval; int status; u8 gen_ctrl; u32 value = 0; /* Put it in soft reset */ status = vid_blk_read_byte(dev, GENERAL_CTL, &gen_ctrl); gen_ctrl |= 1; status = vid_blk_write_byte(dev, GENERAL_CTL, gen_ctrl); switch (audio_input) { case AUDIO_INPUT_LINE: /* setup AUD_IO control from Merlin paralle output */ value = cx231xx_set_field(FLD_AUD_CHAN1_SRC, AUD_CHAN_SRC_PARALLEL); status = vid_blk_write_word(dev, AUD_IO_CTRL, value); /* setup input to Merlin, SRC2 connect to AC97 bypass upsample-by-2, slave mode, sony mode, left justify adr 091c, dat 01000000 */ status = vid_blk_read_word(dev, AC97_CTL, &dwval); status = vid_blk_write_word(dev, AC97_CTL, (dwval | FLD_AC97_UP2X_BYPASS)); /* select the parallel1 and SRC3 */ status = vid_blk_write_word(dev, BAND_OUT_SEL, cx231xx_set_field(FLD_SRC3_IN_SEL, 0x0) | cx231xx_set_field(FLD_SRC3_CLK_SEL, 0x0) | cx231xx_set_field(FLD_PARALLEL1_SRC_SEL, 0x0)); /* unmute all, AC97 in, independence mode adr 08d0, data 0x00063073 */ status = vid_blk_write_word(dev, DL_CTL, 0x3000001); status = vid_blk_write_word(dev, PATH1_CTL1, 0x00063073); /* set AVC maximum threshold, adr 08d4, dat ffff0024 */ status = vid_blk_read_word(dev, PATH1_VOL_CTL, &dwval); status = vid_blk_write_word(dev, PATH1_VOL_CTL, (dwval | FLD_PATH1_AVC_THRESHOLD)); /* set SC maximum threshold, adr 08ec, dat ffffb3a3 */ status = vid_blk_read_word(dev, PATH1_SC_CTL, &dwval); status = vid_blk_write_word(dev, PATH1_SC_CTL, (dwval | FLD_PATH1_SC_THRESHOLD)); break; case AUDIO_INPUT_TUNER_TV: default: status = stopAudioFirmware(dev); /* Setup SRC sources and clocks */ status = vid_blk_write_word(dev, BAND_OUT_SEL, cx231xx_set_field(FLD_SRC6_IN_SEL, 0x00) | cx231xx_set_field(FLD_SRC6_CLK_SEL, 0x01) | cx231xx_set_field(FLD_SRC5_IN_SEL, 0x00) | cx231xx_set_field(FLD_SRC5_CLK_SEL, 0x02) | cx231xx_set_field(FLD_SRC4_IN_SEL, 0x02) | cx231xx_set_field(FLD_SRC4_CLK_SEL, 0x03) | cx231xx_set_field(FLD_SRC3_IN_SEL, 0x00) | cx231xx_set_field(FLD_SRC3_CLK_SEL, 0x00) | cx231xx_set_field(FLD_BASEBAND_BYPASS_CTL, 0x00) | cx231xx_set_field(FLD_AC97_SRC_SEL, 0x03) | cx231xx_set_field(FLD_I2S_SRC_SEL, 0x00) | cx231xx_set_field(FLD_PARALLEL2_SRC_SEL, 0x02) | cx231xx_set_field(FLD_PARALLEL1_SRC_SEL, 0x01)); /* Setup the AUD_IO control */ status = vid_blk_write_word(dev, AUD_IO_CTRL, cx231xx_set_field(FLD_I2S_PORT_DIR, 0x00) | cx231xx_set_field(FLD_I2S_OUT_SRC, 0x00) | cx231xx_set_field(FLD_AUD_CHAN3_SRC, 0x00) | cx231xx_set_field(FLD_AUD_CHAN2_SRC, 0x00) | cx231xx_set_field(FLD_AUD_CHAN1_SRC, 0x03)); status = vid_blk_write_word(dev, PATH1_CTL1, 0x1F063870); /* setAudioStandard(_audio_standard); */ status = vid_blk_write_word(dev, PATH1_CTL1, 0x00063870); status = restartAudioFirmware(dev); switch (dev->board.tuner_type) { case TUNER_XC5000: /* SIF passthrough at 28.6363 MHz sample rate */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, CHIP_CTRL, FLD_SIF_EN, cx231xx_set_field(FLD_SIF_EN, 1)); break; case TUNER_NXP_TDA18271: /* Normal mode: SIF passthrough at 14.32 MHz */ status = cx231xx_read_modify_write_i2c_dword(dev, VID_BLK_I2C_ADDRESS, CHIP_CTRL, FLD_SIF_EN, cx231xx_set_field(FLD_SIF_EN, 0)); break; default: switch (dev->model) { /* i2c device tuners */ case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx: case CX231XX_BOARD_HAUPPAUGE_935C: case CX231XX_BOARD_HAUPPAUGE_955Q: case CX231XX_BOARD_HAUPPAUGE_975: case CX231XX_BOARD_EVROMEDIA_FULL_HYBRID_FULLHD: /* TODO: Normal mode: SIF passthrough at 14.32 MHz?? */ break; default: /* This is just a casual suggestion to people adding new boards in case they use a tuner type we don't currently know about */ dev_info(dev->dev, "Unknown tuner type configuring SIF"); break; } } break; case AUDIO_INPUT_TUNER_FM: /* use SIF for FM radio setupFM(); setAudioStandard(_audio_standard); */ break; case AUDIO_INPUT_MUTE: status = vid_blk_write_word(dev, PATH1_CTL1, 0x1F011012); break; } /* Take it out of soft reset */ status = vid_blk_read_byte(dev, GENERAL_CTL, &gen_ctrl); gen_ctrl &= ~1; status = vid_blk_write_byte(dev, GENERAL_CTL, gen_ctrl); return status; } /****************************************************************************** * C H I P Specific C O N T R O L functions * ******************************************************************************/ int cx231xx_init_ctrl_pin_status(struct cx231xx *dev) { u32 value; int status = 0; status = vid_blk_read_word(dev, PIN_CTRL, &value); value |= (~dev->board.ctl_pin_status_mask); status = vid_blk_write_word(dev, PIN_CTRL, value); return status; } int cx231xx_set_agc_analog_digital_mux_select(struct cx231xx *dev, u8 analog_or_digital) { int status; /* first set the direction to output */ status = cx231xx_set_gpio_direction(dev, dev->board. agc_analog_digital_select_gpio, 1); /* 0 - demod ; 1 - Analog mode */ status = cx231xx_set_gpio_value(dev, dev->board.agc_analog_digital_select_gpio, analog_or_digital); if (status < 0) return status; return 0; } int cx231xx_enable_i2c_port_3(struct cx231xx *dev, bool is_port_3) { u8 value[4] = { 0, 0, 0, 0 }; int status = 0; bool current_is_port_3; /* * Should this code check dev->port_3_switch_enabled first * to skip unnecessary reading of the register? * If yes, the flag dev->port_3_switch_enabled must be initialized * correctly. */ status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value, 4); if (status < 0) return status; current_is_port_3 = value[0] & I2C_DEMOD_EN ? true : false; /* Just return, if already using the right port */ if (current_is_port_3 == is_port_3) return 0; if (is_port_3) value[0] |= I2C_DEMOD_EN; else value[0] &= ~I2C_DEMOD_EN; status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); /* remember status of the switch for usage in is_tuner */ if (status >= 0) dev->port_3_switch_enabled = is_port_3; return status; } EXPORT_SYMBOL_GPL(cx231xx_enable_i2c_port_3); void update_HH_register_after_set_DIF(struct cx231xx *dev) { /* u8 status = 0; u32 value = 0; vid_blk_write_word(dev, PIN_CTRL, 0xA0FFF82F); vid_blk_write_word(dev, DIF_MISC_CTRL, 0x0A203F11); vid_blk_write_word(dev, DIF_SRC_PHASE_INC, 0x1BEFBF06); status = vid_blk_read_word(dev, AFE_CTRL_C2HH_SRC_CTRL, &value); vid_blk_write_word(dev, AFE_CTRL_C2HH_SRC_CTRL, 0x4485D390); status = vid_blk_read_word(dev, AFE_CTRL_C2HH_SRC_CTRL, &value); */ } #if 0 static void cx231xx_dump_SC_reg(struct cx231xx *dev) { u8 value[4] = { 0, 0, 0, 0 }; dev_dbg(dev->dev, "%s!\n", __func__); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, BOARD_CFG_STAT, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", BOARD_CFG_STAT, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS_MODE_REG, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS_MODE_REG, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS1_CFG_REG, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS1_CFG_REG, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS1_LENGTH_REG, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS1_LENGTH_REG, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS2_CFG_REG, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS2_CFG_REG, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS2_LENGTH_REG, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS2_LENGTH_REG, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, EP_MODE_SET, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", EP_MODE_SET, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_PTN1, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_PTN1, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_PTN2, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_PTN2, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_PTN3, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_PTN3, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_MASK0, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_MASK0, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_MASK1, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_MASK1, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_MASK2, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_MASK2, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_GAIN, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_GAIN, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_CAR_REG, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_CAR_REG, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_OT_CFG1, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_OT_CFG1, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_OT_CFG2, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_OT_CFG2, value[0], value[1], value[2], value[3]); cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value, 4); dev_dbg(dev->dev, "reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN, value[0], value[1], value[2], value[3]); } #endif void cx231xx_Setup_AFE_for_LowIF(struct cx231xx *dev) { u8 value = 0; afe_read_byte(dev, ADC_STATUS2_CH3, &value); value = (value & 0xFE)|0x01; afe_write_byte(dev, ADC_STATUS2_CH3, value); afe_read_byte(dev, ADC_STATUS2_CH3, &value); value = (value & 0xFE)|0x00; afe_write_byte(dev, ADC_STATUS2_CH3, value); /* config colibri to lo-if mode FIXME: ntf_mode = 2'b00 by default. But set 0x1 would reduce the diff IF input by half, for low-if agc defect */ afe_read_byte(dev, ADC_NTF_PRECLMP_EN_CH3, &value); value = (value & 0xFC)|0x00; afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH3, value); afe_read_byte(dev, ADC_INPUT_CH3, &value); value = (value & 0xF9)|0x02; afe_write_byte(dev, ADC_INPUT_CH3, value); afe_read_byte(dev, ADC_FB_FRCRST_CH3, &value); value = (value & 0xFB)|0x04; afe_write_byte(dev, ADC_FB_FRCRST_CH3, value); afe_read_byte(dev, ADC_DCSERVO_DEM_CH3, &value); value = (value & 0xFC)|0x03; afe_write_byte(dev, ADC_DCSERVO_DEM_CH3, value); afe_read_byte(dev, ADC_CTRL_DAC1_CH3, &value); value = (value & 0xFB)|0x04; afe_write_byte(dev, ADC_CTRL_DAC1_CH3, value); afe_read_byte(dev, ADC_CTRL_DAC23_CH3, &value); value = (value & 0xF8)|0x06; afe_write_byte(dev, ADC_CTRL_DAC23_CH3, value); afe_read_byte(dev, ADC_CTRL_DAC23_CH3, &value); value = (value & 0x8F)|0x40; afe_write_byte(dev, ADC_CTRL_DAC23_CH3, value); afe_read_byte(dev, ADC_PWRDN_CLAMP_CH3, &value); value = (value & 0xDF)|0x20; afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, value); } void cx231xx_set_Colibri_For_LowIF(struct cx231xx *dev, u32 if_freq, u8 spectral_invert, u32 mode) { u32 colibri_carrier_offset = 0; u32 func_mode = 0x01; /* Device has a DIF if this function is called */ u32 standard = 0; u8 value[4] = { 0, 0, 0, 0 }; dev_dbg(dev->dev, "Enter cx231xx_set_Colibri_For_LowIF()\n"); value[0] = (u8) 0x6F; value[1] = (u8) 0x6F; value[2] = (u8) 0x6F; value[3] = (u8) 0x6F; cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); /*Set colibri for low IF*/ cx231xx_afe_set_mode(dev, AFE_MODE_LOW_IF); /* Set C2HH for low IF operation.*/ standard = dev->norm; cx231xx_dif_configure_C2HH_for_low_IF(dev, dev->active_mode, func_mode, standard); /* Get colibri offsets.*/ colibri_carrier_offset = cx231xx_Get_Colibri_CarrierOffset(mode, standard); dev_dbg(dev->dev, "colibri_carrier_offset=%d, standard=0x%x\n", colibri_carrier_offset, standard); /* Set the band Pass filter for DIF*/ cx231xx_set_DIF_bandpass(dev, (if_freq+colibri_carrier_offset), spectral_invert, mode); } u32 cx231xx_Get_Colibri_CarrierOffset(u32 mode, u32 standerd) { u32 colibri_carrier_offset = 0; if (mode == TUNER_MODE_FM_RADIO) { colibri_carrier_offset = 1100000; } else if (standerd & (V4L2_STD_MN | V4L2_STD_NTSC_M_JP)) { colibri_carrier_offset = 4832000; /*4.83MHz */ } else if (standerd & (V4L2_STD_PAL_B | V4L2_STD_PAL_G)) { colibri_carrier_offset = 2700000; /*2.70MHz */ } else if (standerd & (V4L2_STD_PAL_D | V4L2_STD_PAL_I | V4L2_STD_SECAM)) { colibri_carrier_offset = 2100000; /*2.10MHz */ } return colibri_carrier_offset; } void cx231xx_set_DIF_bandpass(struct cx231xx *dev, u32 if_freq, u8 spectral_invert, u32 mode) { unsigned long pll_freq_word; u32 dif_misc_ctrl_value = 0; u64 pll_freq_u64 = 0; u32 i = 0; dev_dbg(dev->dev, "if_freq=%d;spectral_invert=0x%x;mode=0x%x\n", if_freq, spectral_invert, mode); if (mode == TUNER_MODE_FM_RADIO) { pll_freq_word = 0x905A1CAC; vid_blk_write_word(dev, DIF_PLL_FREQ_WORD, pll_freq_word); } else /*KSPROPERTY_TUNER_MODE_TV*/{ /* Calculate the PLL frequency word based on the adjusted if_freq*/ pll_freq_word = if_freq; pll_freq_u64 = (u64)pll_freq_word << 28L; do_div(pll_freq_u64, 50000000); pll_freq_word = (u32)pll_freq_u64; /*pll_freq_word = 0x3463497;*/ vid_blk_write_word(dev, DIF_PLL_FREQ_WORD, pll_freq_word); if (spectral_invert) { if_freq -= 400000; /* Enable Spectral Invert*/ vid_blk_read_word(dev, DIF_MISC_CTRL, &dif_misc_ctrl_value); dif_misc_ctrl_value = dif_misc_ctrl_value | 0x00200000; vid_blk_write_word(dev, DIF_MISC_CTRL, dif_misc_ctrl_value); } else { if_freq += 400000; /* Disable Spectral Invert*/ vid_blk_read_word(dev, DIF_MISC_CTRL, &dif_misc_ctrl_value); dif_misc_ctrl_value = dif_misc_ctrl_value & 0xFFDFFFFF; vid_blk_write_word(dev, DIF_MISC_CTRL, dif_misc_ctrl_value); } if_freq = (if_freq / 100000) * 100000; if (if_freq < 3000000) if_freq = 3000000; if (if_freq > 16000000) if_freq = 16000000; } dev_dbg(dev->dev, "Enter IF=%zu\n", ARRAY_SIZE(Dif_set_array)); for (i = 0; i < ARRAY_SIZE(Dif_set_array); i++) { if (Dif_set_array[i].if_freq == if_freq) { vid_blk_write_word(dev, Dif_set_array[i].register_address, Dif_set_array[i].value); } } } /****************************************************************************** * D I F - B L O C K C O N T R O L functions * ******************************************************************************/ int cx231xx_dif_configure_C2HH_for_low_IF(struct cx231xx *dev, u32 mode, u32 function_mode, u32 standard) { int status = 0; if (mode == V4L2_TUNER_RADIO) { /* C2HH */ /* lo if big signal */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1); /* FUNC_MODE = DIF */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 23, 24, function_mode); /* IF_MODE */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xFF); /* no inv */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1); } else if (standard != DIF_USE_BASEBAND) { if (standard & V4L2_STD_MN) { /* lo if big signal */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1); /* FUNC_MODE = DIF */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 23, 24, function_mode); /* IF_MODE */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xb); /* no inv */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1); /* 0x124, AUD_CHAN1_SRC = 0x3 */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AUD_IO_CTRL, 0, 31, 0x00000003); } else if ((standard == V4L2_STD_PAL_I) | (standard & V4L2_STD_PAL_D) | (standard & V4L2_STD_SECAM)) { /* C2HH setup */ /* lo if big signal */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1); /* FUNC_MODE = DIF */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 23, 24, function_mode); /* IF_MODE */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xF); /* no inv */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1); } else { /* default PAL BG */ /* C2HH setup */ /* lo if big signal */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1); /* FUNC_MODE = DIF */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 23, 24, function_mode); /* IF_MODE */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xE); /* no inv */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1); } } return status; } int cx231xx_dif_set_standard(struct cx231xx *dev, u32 standard) { int status = 0; u32 dif_misc_ctrl_value = 0; u32 func_mode = 0; dev_dbg(dev->dev, "%s: setStandard to %x\n", __func__, standard); status = vid_blk_read_word(dev, DIF_MISC_CTRL, &dif_misc_ctrl_value); if (standard != DIF_USE_BASEBAND) dev->norm = standard; switch (dev->model) { case CX231XX_BOARD_CNXT_CARRAERA: case CX231XX_BOARD_CNXT_RDE_250: case CX231XX_BOARD_CNXT_SHELBY: case CX231XX_BOARD_CNXT_RDU_250: case CX231XX_BOARD_CNXT_VIDEO_GRABBER: case CX231XX_BOARD_HAUPPAUGE_EXETER: case CX231XX_BOARD_OTG102: func_mode = 0x03; break; case CX231XX_BOARD_CNXT_RDE_253S: case CX231XX_BOARD_CNXT_RDU_253S: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC: func_mode = 0x01; break; default: func_mode = 0x01; } status = cx231xx_dif_configure_C2HH_for_low_IF(dev, dev->active_mode, func_mode, standard); if (standard == DIF_USE_BASEBAND) { /* base band */ /* There is a different SRC_PHASE_INC value for baseband vs. DIF */ status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC, 0xDF7DF83); status = vid_blk_read_word(dev, DIF_MISC_CTRL, &dif_misc_ctrl_value); dif_misc_ctrl_value |= FLD_DIF_DIF_BYPASS; status = vid_blk_write_word(dev, DIF_MISC_CTRL, dif_misc_ctrl_value); } else if (standard & V4L2_STD_PAL_D) { status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL, 0, 31, 0x6503bc0c); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL1, 0, 31, 0xbd038c85); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL2, 0, 31, 0x1db4640a); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL3, 0, 31, 0x00008800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_REF, 0, 31, 0x444C1380); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_IF, 0, 31, 0xDA302600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_INT, 0, 31, 0xDA261700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_RF, 0, 31, 0xDA262600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_INT_CURRENT, 0, 31, 0x26001700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_RF_CURRENT, 0, 31, 0x00002660); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VIDEO_AGC_CTRL, 0, 31, 0x72500800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VID_AUD_OVERRIDE, 0, 31, 0x27000100); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AV_SEP_CTRL, 0, 31, 0x3F3934EA); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_COMP_FLT_CTRL, 0, 31, 0x00000000); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_PHASE_INC, 0, 31, 0x1befbf06); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_GAIN_CONTROL, 0, 31, 0x000035e8); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_RPT_VARIANCE, 0, 31, 0x00000000); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value |= 0x3a023F11; } else if (standard & V4L2_STD_PAL_I) { status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL, 0, 31, 0x6503bc0c); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL1, 0, 31, 0xbd038c85); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL2, 0, 31, 0x1db4640a); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL3, 0, 31, 0x00008800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_REF, 0, 31, 0x444C1380); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_IF, 0, 31, 0xDA302600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_INT, 0, 31, 0xDA261700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_RF, 0, 31, 0xDA262600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_INT_CURRENT, 0, 31, 0x26001700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_RF_CURRENT, 0, 31, 0x00002660); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VIDEO_AGC_CTRL, 0, 31, 0x72500800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VID_AUD_OVERRIDE, 0, 31, 0x27000100); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AV_SEP_CTRL, 0, 31, 0x5F39A934); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_COMP_FLT_CTRL, 0, 31, 0x00000000); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_PHASE_INC, 0, 31, 0x1befbf06); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_GAIN_CONTROL, 0, 31, 0x000035e8); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_RPT_VARIANCE, 0, 31, 0x00000000); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value |= 0x3a033F11; } else if (standard & V4L2_STD_PAL_M) { /* improved Low Frequency Phase Noise */ status = vid_blk_write_word(dev, DIF_PLL_CTRL, 0xFF01FF0C); status = vid_blk_write_word(dev, DIF_PLL_CTRL1, 0xbd038c85); status = vid_blk_write_word(dev, DIF_PLL_CTRL2, 0x1db4640a); status = vid_blk_write_word(dev, DIF_PLL_CTRL3, 0x00008800); status = vid_blk_write_word(dev, DIF_AGC_IF_REF, 0x444C1380); status = vid_blk_write_word(dev, DIF_AGC_IF_INT_CURRENT, 0x26001700); status = vid_blk_write_word(dev, DIF_AGC_RF_CURRENT, 0x00002660); status = vid_blk_write_word(dev, DIF_VIDEO_AGC_CTRL, 0x72500800); status = vid_blk_write_word(dev, DIF_VID_AUD_OVERRIDE, 0x27000100); status = vid_blk_write_word(dev, DIF_AV_SEP_CTRL, 0x012c405d); status = vid_blk_write_word(dev, DIF_COMP_FLT_CTRL, 0x009f50c1); status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC, 0x1befbf06); status = vid_blk_write_word(dev, DIF_SRC_GAIN_CONTROL, 0x000035e8); status = vid_blk_write_word(dev, DIF_SOFT_RST_CTRL_REVB, 0x00000000); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value |= 0x3A0A3F10; } else if (standard & (V4L2_STD_PAL_N | V4L2_STD_PAL_Nc)) { /* improved Low Frequency Phase Noise */ status = vid_blk_write_word(dev, DIF_PLL_CTRL, 0xFF01FF0C); status = vid_blk_write_word(dev, DIF_PLL_CTRL1, 0xbd038c85); status = vid_blk_write_word(dev, DIF_PLL_CTRL2, 0x1db4640a); status = vid_blk_write_word(dev, DIF_PLL_CTRL3, 0x00008800); status = vid_blk_write_word(dev, DIF_AGC_IF_REF, 0x444C1380); status = vid_blk_write_word(dev, DIF_AGC_IF_INT_CURRENT, 0x26001700); status = vid_blk_write_word(dev, DIF_AGC_RF_CURRENT, 0x00002660); status = vid_blk_write_word(dev, DIF_VIDEO_AGC_CTRL, 0x72500800); status = vid_blk_write_word(dev, DIF_VID_AUD_OVERRIDE, 0x27000100); status = vid_blk_write_word(dev, DIF_AV_SEP_CTRL, 0x012c405d); status = vid_blk_write_word(dev, DIF_COMP_FLT_CTRL, 0x009f50c1); status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC, 0x1befbf06); status = vid_blk_write_word(dev, DIF_SRC_GAIN_CONTROL, 0x000035e8); status = vid_blk_write_word(dev, DIF_SOFT_RST_CTRL_REVB, 0x00000000); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value = 0x3A093F10; } else if (standard & (V4L2_STD_SECAM_B | V4L2_STD_SECAM_D | V4L2_STD_SECAM_G | V4L2_STD_SECAM_K | V4L2_STD_SECAM_K1)) { status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL, 0, 31, 0x6503bc0c); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL1, 0, 31, 0xbd038c85); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL2, 0, 31, 0x1db4640a); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL3, 0, 31, 0x00008800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_REF, 0, 31, 0x888C0380); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_IF, 0, 31, 0xe0262600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_INT, 0, 31, 0xc2171700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_RF, 0, 31, 0xc2262600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_INT_CURRENT, 0, 31, 0x26001700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_RF_CURRENT, 0, 31, 0x00002660); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VID_AUD_OVERRIDE, 0, 31, 0x27000100); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AV_SEP_CTRL, 0, 31, 0x3F3530ec); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_COMP_FLT_CTRL, 0, 31, 0x00000000); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_PHASE_INC, 0, 31, 0x1befbf06); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_GAIN_CONTROL, 0, 31, 0x000035e8); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_RPT_VARIANCE, 0, 31, 0x00000000); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VIDEO_AGC_CTRL, 0, 31, 0xf4000000); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value |= 0x3a023F11; } else if (standard & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) { /* Is it SECAM_L1? */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL, 0, 31, 0x6503bc0c); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL1, 0, 31, 0xbd038c85); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL2, 0, 31, 0x1db4640a); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL3, 0, 31, 0x00008800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_REF, 0, 31, 0x888C0380); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_IF, 0, 31, 0xe0262600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_INT, 0, 31, 0xc2171700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_RF, 0, 31, 0xc2262600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_INT_CURRENT, 0, 31, 0x26001700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_RF_CURRENT, 0, 31, 0x00002660); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VID_AUD_OVERRIDE, 0, 31, 0x27000100); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AV_SEP_CTRL, 0, 31, 0x3F3530ec); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_COMP_FLT_CTRL, 0, 31, 0x00000000); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_PHASE_INC, 0, 31, 0x1befbf06); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_GAIN_CONTROL, 0, 31, 0x000035e8); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_RPT_VARIANCE, 0, 31, 0x00000000); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VIDEO_AGC_CTRL, 0, 31, 0xf2560000); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value |= 0x3a023F11; } else if (standard & V4L2_STD_NTSC_M) { /* V4L2_STD_NTSC_M (75 IRE Setup) Or V4L2_STD_NTSC_M_JP (Japan, 0 IRE Setup) */ /* For NTSC the centre frequency of video coming out of sidewinder is around 7.1MHz or 3.6MHz depending on the spectral inversion. so for a non spectrally inverted channel the pll freq word is 0x03420c49 */ status = vid_blk_write_word(dev, DIF_PLL_CTRL, 0x6503BC0C); status = vid_blk_write_word(dev, DIF_PLL_CTRL1, 0xBD038C85); status = vid_blk_write_word(dev, DIF_PLL_CTRL2, 0x1DB4640A); status = vid_blk_write_word(dev, DIF_PLL_CTRL3, 0x00008800); status = vid_blk_write_word(dev, DIF_AGC_IF_REF, 0x444C0380); status = vid_blk_write_word(dev, DIF_AGC_IF_INT_CURRENT, 0x26001700); status = vid_blk_write_word(dev, DIF_AGC_RF_CURRENT, 0x00002660); status = vid_blk_write_word(dev, DIF_VIDEO_AGC_CTRL, 0x04000800); status = vid_blk_write_word(dev, DIF_VID_AUD_OVERRIDE, 0x27000100); status = vid_blk_write_word(dev, DIF_AV_SEP_CTRL, 0x01296e1f); status = vid_blk_write_word(dev, DIF_COMP_FLT_CTRL, 0x009f50c1); status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC, 0x1befbf06); status = vid_blk_write_word(dev, DIF_SRC_GAIN_CONTROL, 0x000035e8); status = vid_blk_write_word(dev, DIF_AGC_CTRL_IF, 0xC2262600); status = vid_blk_write_word(dev, DIF_AGC_CTRL_INT, 0xC2262600); status = vid_blk_write_word(dev, DIF_AGC_CTRL_RF, 0xC2262600); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value |= 0x3a003F10; } else { /* default PAL BG */ status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL, 0, 31, 0x6503bc0c); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL1, 0, 31, 0xbd038c85); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL2, 0, 31, 0x1db4640a); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_PLL_CTRL3, 0, 31, 0x00008800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_REF, 0, 31, 0x444C1380); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_IF, 0, 31, 0xDA302600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_INT, 0, 31, 0xDA261700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_CTRL_RF, 0, 31, 0xDA262600); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_IF_INT_CURRENT, 0, 31, 0x26001700); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AGC_RF_CURRENT, 0, 31, 0x00002660); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VIDEO_AGC_CTRL, 0, 31, 0x72500800); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_VID_AUD_OVERRIDE, 0, 31, 0x27000100); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_AV_SEP_CTRL, 0, 31, 0x3F3530EC); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_COMP_FLT_CTRL, 0, 31, 0x00A653A8); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_PHASE_INC, 0, 31, 0x1befbf06); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_SRC_GAIN_CONTROL, 0, 31, 0x000035e8); status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32, DIF_RPT_VARIANCE, 0, 31, 0x00000000); /* Save the Spec Inversion value */ dif_misc_ctrl_value &= FLD_DIF_SPEC_INV; dif_misc_ctrl_value |= 0x3a013F11; } /* The AGC values should be the same for all standards, AUD_SRC_SEL[19] should always be disabled */ dif_misc_ctrl_value &= ~FLD_DIF_AUD_SRC_SEL; /* It is still possible to get Set Standard calls even when we are in FM mode. This is done to override the value for FM. */ if (dev->active_mode == V4L2_TUNER_RADIO) dif_misc_ctrl_value = 0x7a080000; /* Write the calculated value for misc ontrol register */ status = vid_blk_write_word(dev, DIF_MISC_CTRL, dif_misc_ctrl_value); return status; } int cx231xx_tuner_pre_channel_change(struct cx231xx *dev) { int status = 0; u32 dwval; /* Set the RF and IF k_agc values to 3 */ status = vid_blk_read_word(dev, DIF_AGC_IF_REF, &dwval); dwval &= ~(FLD_DIF_K_AGC_RF | FLD_DIF_K_AGC_IF); dwval |= 0x33000000; status = vid_blk_write_word(dev, DIF_AGC_IF_REF, dwval); return status; } int cx231xx_tuner_post_channel_change(struct cx231xx *dev) { int status = 0; u32 dwval; dev_dbg(dev->dev, "%s: dev->tuner_type =0%d\n", __func__, dev->tuner_type); /* Set the RF and IF k_agc values to 4 for PAL/NTSC and 8 for * SECAM L/B/D standards */ status = vid_blk_read_word(dev, DIF_AGC_IF_REF, &dwval); dwval &= ~(FLD_DIF_K_AGC_RF | FLD_DIF_K_AGC_IF); if (dev->norm & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_B | V4L2_STD_SECAM_D)) { if (dev->tuner_type == TUNER_NXP_TDA18271) { dwval &= ~FLD_DIF_IF_REF; dwval |= 0x88000300; } else dwval |= 0x88000000; } else { if (dev->tuner_type == TUNER_NXP_TDA18271) { dwval &= ~FLD_DIF_IF_REF; dwval |= 0xCC000300; } else dwval |= 0x44000000; } status = vid_blk_write_word(dev, DIF_AGC_IF_REF, dwval); return status == sizeof(dwval) ? 0 : -EIO; } /****************************************************************************** * I 2 S - B L O C K C O N T R O L functions * ******************************************************************************/ int cx231xx_i2s_blk_initialize(struct cx231xx *dev) { int status = 0; u32 value; status = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL1, 1, &value, 1); /* enables clock to delta-sigma and decimation filter */ value |= 0x80; status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL1, 1, value, 1); /* power up all channel */ status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL2, 1, 0x00, 1); return status; } int cx231xx_i2s_blk_update_power_control(struct cx231xx *dev, enum AV_MODE avmode) { int status = 0; u32 value = 0; if (avmode != POLARIS_AVMODE_ENXTERNAL_AV) { status = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL2, 1, &value, 1); value |= 0xfe; status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL2, 1, value, 1); } else { status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL2, 1, 0x00, 1); } return status; } /* set i2s_blk for audio input types */ int cx231xx_i2s_blk_set_audio_input(struct cx231xx *dev, u8 audio_input) { int status = 0; switch (audio_input) { case CX231XX_AMUX_LINE_IN: status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL2, 1, 0x00, 1); status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, CH_PWR_CTRL1, 1, 0x80, 1); break; case CX231XX_AMUX_VIDEO: default: break; } dev->ctl_ainput = audio_input; return status; } /****************************************************************************** * P O W E R C O N T R O L functions * ******************************************************************************/ int cx231xx_set_power_mode(struct cx231xx *dev, enum AV_MODE mode) { u8 value[4] = { 0, 0, 0, 0 }; u32 tmp = 0; int status = 0; if (dev->power_mode != mode) dev->power_mode = mode; else { dev_dbg(dev->dev, "%s: mode = %d, No Change req.\n", __func__, mode); return 0; } status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value, 4); if (status < 0) return status; tmp = le32_to_cpu(*((__le32 *) value)); switch (mode) { case POLARIS_AVMODE_ENXTERNAL_AV: tmp &= (~PWR_MODE_MASK); tmp |= PWR_AV_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); tmp |= PWR_ISO_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); tmp |= POLARIS_AVMODE_ENXTERNAL_AV; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); /* reset state of xceive tuner */ dev->xc_fw_load_done = 0; break; case POLARIS_AVMODE_ANALOGT_TV: tmp |= PWR_DEMOD_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); if (!(tmp & PWR_TUNER_EN)) { tmp |= (PWR_TUNER_EN); value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } if (!(tmp & PWR_AV_EN)) { tmp |= PWR_AV_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } if (!(tmp & PWR_ISO_EN)) { tmp |= PWR_ISO_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } if (!(tmp & POLARIS_AVMODE_ANALOGT_TV)) { tmp |= POLARIS_AVMODE_ANALOGT_TV; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } if (dev->board.tuner_type != TUNER_ABSENT) { /* reset the Tuner */ if (dev->board.tuner_gpio) cx231xx_gpio_set(dev, dev->board.tuner_gpio); if (dev->cx231xx_reset_analog_tuner) dev->cx231xx_reset_analog_tuner(dev); } break; case POLARIS_AVMODE_DIGITAL: if (!(tmp & PWR_TUNER_EN)) { tmp |= (PWR_TUNER_EN); value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } if (!(tmp & PWR_AV_EN)) { tmp |= PWR_AV_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } if (!(tmp & PWR_ISO_EN)) { tmp |= PWR_ISO_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } tmp &= (~PWR_AV_MODE); tmp |= POLARIS_AVMODE_DIGITAL; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); if (!(tmp & PWR_DEMOD_EN)) { tmp |= PWR_DEMOD_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } if (dev->board.tuner_type != TUNER_ABSENT) { /* reset the Tuner */ if (dev->board.tuner_gpio) cx231xx_gpio_set(dev, dev->board.tuner_gpio); if (dev->cx231xx_reset_analog_tuner) dev->cx231xx_reset_analog_tuner(dev); } break; default: break; } msleep(PWR_SLEEP_INTERVAL); /* For power saving, only enable Pwr_resetout_n when digital TV is selected. */ if (mode == POLARIS_AVMODE_DIGITAL) { tmp |= PWR_RESETOUT_EN; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(PWR_SLEEP_INTERVAL); } /* update power control for afe */ status = cx231xx_afe_update_power_control(dev, mode); /* update power control for i2s_blk */ status = cx231xx_i2s_blk_update_power_control(dev, mode); status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value, 4); return status; } /****************************************************************************** * S T R E A M C O N T R O L functions * ******************************************************************************/ int cx231xx_start_stream(struct cx231xx *dev, u32 ep_mask) { u8 value[4] = { 0x0, 0x0, 0x0, 0x0 }; u32 tmp = 0; int status = 0; dev_dbg(dev->dev, "%s: ep_mask = %x\n", __func__, ep_mask); status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, EP_MODE_SET, value, 4); if (status < 0) return status; tmp = le32_to_cpu(*((__le32 *) value)); tmp |= ep_mask; value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, EP_MODE_SET, value, 4); return status; } int cx231xx_stop_stream(struct cx231xx *dev, u32 ep_mask) { u8 value[4] = { 0x0, 0x0, 0x0, 0x0 }; u32 tmp = 0; int status = 0; dev_dbg(dev->dev, "%s: ep_mask = %x\n", __func__, ep_mask); status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, EP_MODE_SET, value, 4); if (status < 0) return status; tmp = le32_to_cpu(*((__le32 *) value)); tmp &= (~ep_mask); value[0] = (u8) tmp; value[1] = (u8) (tmp >> 8); value[2] = (u8) (tmp >> 16); value[3] = (u8) (tmp >> 24); status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, EP_MODE_SET, value, 4); return status; } int cx231xx_initialize_stream_xfer(struct cx231xx *dev, u32 media_type) { int status = 0; u32 value = 0; u8 val[4] = { 0, 0, 0, 0 }; if (dev->udev->speed == USB_SPEED_HIGH) { switch (media_type) { case Audio: dev_dbg(dev->dev, "%s: Audio enter HANC\n", __func__); status = cx231xx_mode_register(dev, TS_MODE_REG, 0x9300); break; case Vbi: dev_dbg(dev->dev, "%s: set vanc registers\n", __func__); status = cx231xx_mode_register(dev, TS_MODE_REG, 0x300); break; case Sliced_cc: dev_dbg(dev->dev, "%s: set hanc registers\n", __func__); status = cx231xx_mode_register(dev, TS_MODE_REG, 0x1300); break; case Raw_Video: dev_dbg(dev->dev, "%s: set video registers\n", __func__); status = cx231xx_mode_register(dev, TS_MODE_REG, 0x100); break; case TS1_serial_mode: dev_dbg(dev->dev, "%s: set ts1 registers", __func__); if (dev->board.has_417) { dev_dbg(dev->dev, "%s: MPEG\n", __func__); value &= 0xFFFFFFFC; value |= 0x3; status = cx231xx_mode_register(dev, TS_MODE_REG, value); val[0] = 0x04; val[1] = 0xA3; val[2] = 0x3B; val[3] = 0x00; status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, TS1_CFG_REG, val, 4); val[0] = 0x00; val[1] = 0x08; val[2] = 0x00; val[3] = 0x08; status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, TS1_LENGTH_REG, val, 4); } else { dev_dbg(dev->dev, "%s: BDA\n", __func__); status = cx231xx_mode_register(dev, TS_MODE_REG, 0x101); status = cx231xx_mode_register(dev, TS1_CFG_REG, 0x010); } break; case TS1_parallel_mode: dev_dbg(dev->dev, "%s: set ts1 parallel mode registers\n", __func__); status = cx231xx_mode_register(dev, TS_MODE_REG, 0x100); status = cx231xx_mode_register(dev, TS1_CFG_REG, 0x400); break; } } else { status = cx231xx_mode_register(dev, TS_MODE_REG, 0x101); } return status; } int cx231xx_capture_start(struct cx231xx *dev, int start, u8 media_type) { int rc = -1; u32 ep_mask = -1; struct pcb_config *pcb_config; /* get EP for media type */ pcb_config = (struct pcb_config *)&dev->current_pcb_config; if (pcb_config->config_num) { switch (media_type) { case Raw_Video: ep_mask = ENABLE_EP4; /* ep4 [00:1000] */ break; case Audio: ep_mask = ENABLE_EP3; /* ep3 [00:0100] */ break; case Vbi: ep_mask = ENABLE_EP5; /* ep5 [01:0000] */ break; case Sliced_cc: ep_mask = ENABLE_EP6; /* ep6 [10:0000] */ break; case TS1_serial_mode: case TS1_parallel_mode: ep_mask = ENABLE_EP1; /* ep1 [00:0001] */ break; case TS2: ep_mask = ENABLE_EP2; /* ep2 [00:0010] */ break; } } if (start) { rc = cx231xx_initialize_stream_xfer(dev, media_type); if (rc < 0) return rc; /* enable video capture */ if (ep_mask > 0) rc = cx231xx_start_stream(dev, ep_mask); } else { /* disable video capture */ if (ep_mask > 0) rc = cx231xx_stop_stream(dev, ep_mask); } return rc; } EXPORT_SYMBOL_GPL(cx231xx_capture_start); /***************************************************************************** * G P I O B I T control functions * ******************************************************************************/ static int cx231xx_set_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u32 gpio_val) { int status = 0; gpio_val = (__force u32)cpu_to_le32(gpio_val); status = cx231xx_send_gpio_cmd(dev, gpio_bit, (u8 *)&gpio_val, 4, 0, 0); return status; } static int cx231xx_get_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u32 *gpio_val) { __le32 tmp; int status = 0; status = cx231xx_send_gpio_cmd(dev, gpio_bit, (u8 *)&tmp, 4, 0, 1); *gpio_val = le32_to_cpu(tmp); return status; } /* * cx231xx_set_gpio_direction * Sets the direction of the GPIO pin to input or output * * Parameters : * pin_number : The GPIO Pin number to program the direction for * from 0 to 31 * pin_value : The Direction of the GPIO Pin under reference. * 0 = Input direction * 1 = Output direction */ int cx231xx_set_gpio_direction(struct cx231xx *dev, int pin_number, int pin_value) { int status = 0; u32 value = 0; /* Check for valid pin_number - if 32 , bail out */ if (pin_number >= 32) return -EINVAL; /* input */ if (pin_value == 0) value = dev->gpio_dir & (~(1 << pin_number)); /* clear */ else value = dev->gpio_dir | (1 << pin_number); status = cx231xx_set_gpio_bit(dev, value, dev->gpio_val); /* cache the value for future */ dev->gpio_dir = value; return status; } /* * cx231xx_set_gpio_value * Sets the value of the GPIO pin to Logic high or low. The Pin under * reference should ALREADY BE SET IN OUTPUT MODE !!!!!!!!! * * Parameters : * pin_number : The GPIO Pin number to program the direction for * pin_value : The value of the GPIO Pin under reference. * 0 = set it to 0 * 1 = set it to 1 */ int cx231xx_set_gpio_value(struct cx231xx *dev, int pin_number, int pin_value) { int status = 0; u32 value = 0; /* Check for valid pin_number - if 0xFF , bail out */ if (pin_number >= 32) return -EINVAL; /* first do a sanity check - if the Pin is not output, make it output */ if ((dev->gpio_dir & (1 << pin_number)) == 0x00) { /* It was in input mode */ value = dev->gpio_dir | (1 << pin_number); dev->gpio_dir = value; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); } if (pin_value == 0) value = dev->gpio_val & (~(1 << pin_number)); else value = dev->gpio_val | (1 << pin_number); /* store the value */ dev->gpio_val = value; /* toggle bit0 of GP_IO */ status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); return status; } /***************************************************************************** * G P I O I2C related functions * ******************************************************************************/ int cx231xx_gpio_i2c_start(struct cx231xx *dev) { int status = 0; /* set SCL to output 1 ; set SDA to output 1 */ dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio; dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio; dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; dev->gpio_val |= 1 << dev->board.tuner_sda_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); if (status < 0) return -EINVAL; /* set SCL to output 1; set SDA to output 0 */ dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); if (status < 0) return -EINVAL; /* set SCL to output 0; set SDA to output 0 */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); if (status < 0) return -EINVAL; return status; } int cx231xx_gpio_i2c_end(struct cx231xx *dev) { int status = 0; /* set SCL to output 0; set SDA to output 0 */ dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio; dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio; dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); if (status < 0) return -EINVAL; /* set SCL to output 1; set SDA to output 0 */ dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); if (status < 0) return -EINVAL; /* set SCL to input ,release SCL cable control set SDA to input ,release SDA cable control */ dev->gpio_dir &= ~(1 << dev->board.tuner_scl_gpio); dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); if (status < 0) return -EINVAL; return status; } int cx231xx_gpio_i2c_write_byte(struct cx231xx *dev, u8 data) { int status = 0; u8 i; /* set SCL to output ; set SDA to output */ dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio; dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio; for (i = 0; i < 8; i++) { if (((data << i) & 0x80) == 0) { /* set SCL to output 0; set SDA to output 0 */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL to output 1; set SDA to output 0 */ dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL to output 0; set SDA to output 0 */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); } else { /* set SCL to output 0; set SDA to output 1 */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); dev->gpio_val |= 1 << dev->board.tuner_sda_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL to output 1; set SDA to output 1 */ dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL to output 0; set SDA to output 1 */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); } } return status; } int cx231xx_gpio_i2c_read_byte(struct cx231xx *dev, u8 *buf) { u8 value = 0; int status = 0; u32 gpio_logic_value = 0; u8 i; /* read byte */ for (i = 0; i < 8; i++) { /* send write I2c addr */ /* set SCL to output 0; set SDA to input */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL to output 1; set SDA to input */ dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* get SDA data bit */ gpio_logic_value = dev->gpio_val; status = cx231xx_get_gpio_bit(dev, dev->gpio_dir, &dev->gpio_val); if ((dev->gpio_val & (1 << dev->board.tuner_sda_gpio)) != 0) value |= (1 << (8 - i - 1)); dev->gpio_val = gpio_logic_value; } /* set SCL to output 0,finish the read latest SCL signal. !!!set SDA to input, never to modify SDA direction at the same times */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* store the value */ *buf = value & 0xff; return status; } int cx231xx_gpio_i2c_read_ack(struct cx231xx *dev) { int status = 0; u32 gpio_logic_value = 0; int nCnt = 10; int nInit = nCnt; /* clock stretch; set SCL to input; set SDA to input; get SCL value till SCL = 1 */ dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio); dev->gpio_dir &= ~(1 << dev->board.tuner_scl_gpio); gpio_logic_value = dev->gpio_val; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); do { msleep(2); status = cx231xx_get_gpio_bit(dev, dev->gpio_dir, &dev->gpio_val); nCnt--; } while (((dev->gpio_val & (1 << dev->board.tuner_scl_gpio)) == 0) && (nCnt > 0)); if (nCnt == 0) dev_dbg(dev->dev, "No ACK after %d msec -GPIO I2C failed!", nInit * 10); /* * readAck * through clock stretch, slave has given a SCL signal, * so the SDA data can be directly read. */ status = cx231xx_get_gpio_bit(dev, dev->gpio_dir, &dev->gpio_val); if ((dev->gpio_val & 1 << dev->board.tuner_sda_gpio) == 0) { dev->gpio_val = gpio_logic_value; dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio); status = 0; } else { dev->gpio_val = gpio_logic_value; dev->gpio_val |= (1 << dev->board.tuner_sda_gpio); } /* read SDA end, set the SCL to output 0, after this operation, SDA direction can be changed. */ dev->gpio_val = gpio_logic_value; dev->gpio_dir |= (1 << dev->board.tuner_scl_gpio); dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); return status; } int cx231xx_gpio_i2c_write_ack(struct cx231xx *dev) { int status = 0; /* set SDA to output */ dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL = 0 (output); set SDA = 0 (output) */ dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio); dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL = 1 (output); set SDA = 0 (output) */ dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SCL = 0 (output); set SDA = 0 (output) */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set SDA to input,and then the slave will read data from SDA. */ dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); return status; } int cx231xx_gpio_i2c_write_nak(struct cx231xx *dev) { int status = 0; /* set scl to output ; set sda to input */ dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio; dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set scl to output 0; set sda to input */ dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio); status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); /* set scl to output 1; set sda to input */ dev->gpio_val |= 1 << dev->board.tuner_scl_gpio; status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val); return status; } /***************************************************************************** * G P I O I2C related functions * ******************************************************************************/ /* cx231xx_gpio_i2c_read * Function to read data from gpio based I2C interface */ int cx231xx_gpio_i2c_read(struct cx231xx *dev, u8 dev_addr, u8 *buf, u8 len) { int status = 0; int i = 0; /* get the lock */ mutex_lock(&dev->gpio_i2c_lock); /* start */ status = cx231xx_gpio_i2c_start(dev); /* write dev_addr */ status = cx231xx_gpio_i2c_write_byte(dev, (dev_addr << 1) + 1); /* readAck */ status = cx231xx_gpio_i2c_read_ack(dev); /* read data */ for (i = 0; i < len; i++) { /* read data */ buf[i] = 0; status = cx231xx_gpio_i2c_read_byte(dev, &buf[i]); if ((i + 1) != len) { /* only do write ack if we more length */ status = cx231xx_gpio_i2c_write_ack(dev); } } /* write NAK - inform reads are complete */ status = cx231xx_gpio_i2c_write_nak(dev); /* write end */ status = cx231xx_gpio_i2c_end(dev); /* release the lock */ mutex_unlock(&dev->gpio_i2c_lock); return status; } /* cx231xx_gpio_i2c_write * Function to write data to gpio based I2C interface */ int cx231xx_gpio_i2c_write(struct cx231xx *dev, u8 dev_addr, u8 *buf, u8 len) { int i = 0; /* get the lock */ mutex_lock(&dev->gpio_i2c_lock); /* start */ cx231xx_gpio_i2c_start(dev); /* write dev_addr */ cx231xx_gpio_i2c_write_byte(dev, dev_addr << 1); /* read Ack */ cx231xx_gpio_i2c_read_ack(dev); for (i = 0; i < len; i++) { /* Write data */ cx231xx_gpio_i2c_write_byte(dev, buf[i]); /* read Ack */ cx231xx_gpio_i2c_read_ack(dev); } /* write End */ cx231xx_gpio_i2c_end(dev); /* release the lock */ mutex_unlock(&dev->gpio_i2c_lock); return 0; } |
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761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Virtio SCSI HBA driver * * Copyright IBM Corp. 2010 * Copyright Red Hat, Inc. 2011 * * Authors: * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> * Paolo Bonzini <pbonzini@redhat.com> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/slab.h> #include <linux/mempool.h> #include <linux/interrupt.h> #include <linux/virtio.h> #include <linux/virtio_ids.h> #include <linux/virtio_config.h> #include <linux/virtio_scsi.h> #include <linux/cpu.h> #include <linux/blkdev.h> #include <linux/blk-integrity.h> #include <scsi/scsi_host.h> #include <scsi/scsi_device.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_tcq.h> #include <scsi/scsi_devinfo.h> #include <linux/seqlock.h> #include "sd.h" #define VIRTIO_SCSI_MEMPOOL_SZ 64 #define VIRTIO_SCSI_EVENT_LEN 8 #define VIRTIO_SCSI_VQ_BASE 2 static unsigned int virtscsi_poll_queues; module_param(virtscsi_poll_queues, uint, 0644); MODULE_PARM_DESC(virtscsi_poll_queues, "The number of dedicated virtqueues for polling I/O"); /* Command queue element */ struct virtio_scsi_cmd { struct scsi_cmnd *sc; struct completion *comp; union { struct virtio_scsi_cmd_req cmd; struct virtio_scsi_cmd_req_pi cmd_pi; struct virtio_scsi_ctrl_tmf_req tmf; struct virtio_scsi_ctrl_an_req an; } req; union { struct virtio_scsi_cmd_resp cmd; struct virtio_scsi_ctrl_tmf_resp tmf; struct virtio_scsi_ctrl_an_resp an; struct virtio_scsi_event evt; } resp; } ____cacheline_aligned_in_smp; struct virtio_scsi_event_node { struct virtio_scsi *vscsi; struct virtio_scsi_event event; struct work_struct work; }; struct virtio_scsi_vq { /* Protects vq */ spinlock_t vq_lock; struct virtqueue *vq; }; /* Driver instance state */ struct virtio_scsi { struct virtio_device *vdev; /* Get some buffers ready for event vq */ struct virtio_scsi_event_node event_list[VIRTIO_SCSI_EVENT_LEN]; u32 num_queues; int io_queues[HCTX_MAX_TYPES]; struct hlist_node node; /* Protected by event_vq lock */ bool stop_events; struct virtio_scsi_vq ctrl_vq; struct virtio_scsi_vq event_vq; struct virtio_scsi_vq req_vqs[]; }; static struct kmem_cache *virtscsi_cmd_cache; static mempool_t *virtscsi_cmd_pool; static inline struct Scsi_Host *virtio_scsi_host(struct virtio_device *vdev) { return vdev->priv; } static void virtscsi_compute_resid(struct scsi_cmnd *sc, u32 resid) { if (resid) scsi_set_resid(sc, min(resid, scsi_bufflen(sc))); } /* * virtscsi_complete_cmd - finish a scsi_cmd and invoke scsi_done * * Called with vq_lock held. */ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf) { struct virtio_scsi_cmd *cmd = buf; struct scsi_cmnd *sc = cmd->sc; struct virtio_scsi_cmd_resp *resp = &cmd->resp.cmd; dev_dbg(&sc->device->sdev_gendev, "cmd %p response %u status %#02x sense_len %u\n", sc, resp->response, resp->status, resp->sense_len); sc->result = resp->status; virtscsi_compute_resid(sc, virtio32_to_cpu(vscsi->vdev, resp->resid)); switch (resp->response) { case VIRTIO_SCSI_S_OK: set_host_byte(sc, DID_OK); break; case VIRTIO_SCSI_S_OVERRUN: set_host_byte(sc, DID_ERROR); break; case VIRTIO_SCSI_S_ABORTED: set_host_byte(sc, DID_ABORT); break; case VIRTIO_SCSI_S_BAD_TARGET: set_host_byte(sc, DID_BAD_TARGET); break; case VIRTIO_SCSI_S_RESET: set_host_byte(sc, DID_RESET); break; case VIRTIO_SCSI_S_BUSY: set_host_byte(sc, DID_BUS_BUSY); break; case VIRTIO_SCSI_S_TRANSPORT_FAILURE: set_host_byte(sc, DID_TRANSPORT_DISRUPTED); break; case VIRTIO_SCSI_S_TARGET_FAILURE: set_host_byte(sc, DID_BAD_TARGET); break; case VIRTIO_SCSI_S_NEXUS_FAILURE: set_status_byte(sc, SAM_STAT_RESERVATION_CONFLICT); break; default: scmd_printk(KERN_WARNING, sc, "Unknown response %d", resp->response); fallthrough; case VIRTIO_SCSI_S_FAILURE: set_host_byte(sc, DID_ERROR); break; } WARN_ON(virtio32_to_cpu(vscsi->vdev, resp->sense_len) > VIRTIO_SCSI_SENSE_SIZE); if (resp->sense_len) { memcpy(sc->sense_buffer, resp->sense, min_t(u32, virtio32_to_cpu(vscsi->vdev, resp->sense_len), VIRTIO_SCSI_SENSE_SIZE)); } scsi_done(sc); } static void virtscsi_vq_done(struct virtio_scsi *vscsi, struct virtio_scsi_vq *virtscsi_vq, void (*fn)(struct virtio_scsi *vscsi, void *buf)) { void *buf; unsigned int len; unsigned long flags; struct virtqueue *vq = virtscsi_vq->vq; spin_lock_irqsave(&virtscsi_vq->vq_lock, flags); do { virtqueue_disable_cb(vq); while ((buf = virtqueue_get_buf(vq, &len)) != NULL) fn(vscsi, buf); } while (!virtqueue_enable_cb(vq)); spin_unlock_irqrestore(&virtscsi_vq->vq_lock, flags); } static void virtscsi_req_done(struct virtqueue *vq) { struct Scsi_Host *sh = virtio_scsi_host(vq->vdev); struct virtio_scsi *vscsi = shost_priv(sh); int index = vq->index - VIRTIO_SCSI_VQ_BASE; struct virtio_scsi_vq *req_vq = &vscsi->req_vqs[index]; virtscsi_vq_done(vscsi, req_vq, virtscsi_complete_cmd); }; static void virtscsi_poll_requests(struct virtio_scsi *vscsi) { int i, num_vqs; num_vqs = vscsi->num_queues; for (i = 0; i < num_vqs; i++) virtscsi_vq_done(vscsi, &vscsi->req_vqs[i], virtscsi_complete_cmd); } static void virtscsi_complete_free(struct virtio_scsi *vscsi, void *buf) { struct virtio_scsi_cmd *cmd = buf; if (cmd->comp) complete(cmd->comp); } static void virtscsi_ctrl_done(struct virtqueue *vq) { struct Scsi_Host *sh = virtio_scsi_host(vq->vdev); struct virtio_scsi *vscsi = shost_priv(sh); virtscsi_vq_done(vscsi, &vscsi->ctrl_vq, virtscsi_complete_free); }; static void virtscsi_handle_event(struct work_struct *work); static int virtscsi_kick_event(struct virtio_scsi *vscsi, struct virtio_scsi_event_node *event_node) { int err; struct scatterlist sg; unsigned long flags; INIT_WORK(&event_node->work, virtscsi_handle_event); sg_init_one(&sg, &event_node->event, sizeof(struct virtio_scsi_event)); spin_lock_irqsave(&vscsi->event_vq.vq_lock, flags); err = virtqueue_add_inbuf(vscsi->event_vq.vq, &sg, 1, event_node, GFP_ATOMIC); if (!err) virtqueue_kick(vscsi->event_vq.vq); spin_unlock_irqrestore(&vscsi->event_vq.vq_lock, flags); return err; } static int virtscsi_kick_event_all(struct virtio_scsi *vscsi) { int i; for (i = 0; i < VIRTIO_SCSI_EVENT_LEN; i++) { vscsi->event_list[i].vscsi = vscsi; virtscsi_kick_event(vscsi, &vscsi->event_list[i]); } return 0; } static void virtscsi_cancel_event_work(struct virtio_scsi *vscsi) { int i; /* Stop scheduling work before calling cancel_work_sync. */ spin_lock_irq(&vscsi->event_vq.vq_lock); vscsi->stop_events = true; spin_unlock_irq(&vscsi->event_vq.vq_lock); for (i = 0; i < VIRTIO_SCSI_EVENT_LEN; i++) cancel_work_sync(&vscsi->event_list[i].work); } static void virtscsi_handle_transport_reset(struct virtio_scsi *vscsi, struct virtio_scsi_event *event) { struct scsi_device *sdev; struct Scsi_Host *shost = virtio_scsi_host(vscsi->vdev); unsigned int target = event->lun[1]; unsigned int lun = (event->lun[2] << 8) | event->lun[3]; switch (virtio32_to_cpu(vscsi->vdev, event->reason)) { case VIRTIO_SCSI_EVT_RESET_RESCAN: if (lun == 0) { scsi_scan_target(&shost->shost_gendev, 0, target, SCAN_WILD_CARD, SCSI_SCAN_INITIAL); } else { scsi_add_device(shost, 0, target, lun); } break; case VIRTIO_SCSI_EVT_RESET_REMOVED: sdev = scsi_device_lookup(shost, 0, target, lun); if (sdev) { scsi_remove_device(sdev); scsi_device_put(sdev); } else { pr_err("SCSI device %d 0 %d %d not found\n", shost->host_no, target, lun); } break; default: pr_info("Unsupported virtio scsi event reason %x\n", event->reason); } } static void virtscsi_handle_param_change(struct virtio_scsi *vscsi, struct virtio_scsi_event *event) { struct scsi_device *sdev; struct Scsi_Host *shost = virtio_scsi_host(vscsi->vdev); unsigned int target = event->lun[1]; unsigned int lun = (event->lun[2] << 8) | event->lun[3]; u8 asc = virtio32_to_cpu(vscsi->vdev, event->reason) & 255; u8 ascq = virtio32_to_cpu(vscsi->vdev, event->reason) >> 8; sdev = scsi_device_lookup(shost, 0, target, lun); if (!sdev) { pr_err("SCSI device %d 0 %d %d not found\n", shost->host_no, target, lun); return; } /* Handle "Parameters changed", "Mode parameters changed", and "Capacity data has changed". */ if (asc == 0x2a && (ascq == 0x00 || ascq == 0x01 || ascq == 0x09)) scsi_rescan_device(sdev); scsi_device_put(sdev); } static int virtscsi_rescan_hotunplug(struct virtio_scsi *vscsi) { struct scsi_device *sdev; struct Scsi_Host *shost = virtio_scsi_host(vscsi->vdev); unsigned char scsi_cmd[MAX_COMMAND_SIZE]; int result, inquiry_len, inq_result_len = 256; char *inq_result = kmalloc(inq_result_len, GFP_KERNEL); if (!inq_result) return -ENOMEM; shost_for_each_device(sdev, shost) { inquiry_len = sdev->inquiry_len ? sdev->inquiry_len : 36; memset(scsi_cmd, 0, sizeof(scsi_cmd)); scsi_cmd[0] = INQUIRY; scsi_cmd[4] = (unsigned char) inquiry_len; memset(inq_result, 0, inq_result_len); result = scsi_execute_cmd(sdev, scsi_cmd, REQ_OP_DRV_IN, inq_result, inquiry_len, SD_TIMEOUT, SD_MAX_RETRIES, NULL); if (result == 0 && inq_result[0] >> 5) { /* PQ indicates the LUN is not attached */ scsi_remove_device(sdev); } else if (result > 0 && host_byte(result) == DID_BAD_TARGET) { /* * If all LUNs of a virtio-scsi device are unplugged * it will respond with BAD TARGET on any INQUIRY * command. * Remove the device in this case as well. */ scsi_remove_device(sdev); } } kfree(inq_result); return 0; } static void virtscsi_handle_event(struct work_struct *work) { struct virtio_scsi_event_node *event_node = container_of(work, struct virtio_scsi_event_node, work); struct virtio_scsi *vscsi = event_node->vscsi; struct virtio_scsi_event *event = &event_node->event; if (event->event & cpu_to_virtio32(vscsi->vdev, VIRTIO_SCSI_T_EVENTS_MISSED)) { int ret; event->event &= ~cpu_to_virtio32(vscsi->vdev, VIRTIO_SCSI_T_EVENTS_MISSED); ret = virtscsi_rescan_hotunplug(vscsi); if (ret) return; scsi_scan_host(virtio_scsi_host(vscsi->vdev)); } switch (virtio32_to_cpu(vscsi->vdev, event->event)) { case VIRTIO_SCSI_T_NO_EVENT: break; case VIRTIO_SCSI_T_TRANSPORT_RESET: virtscsi_handle_transport_reset(vscsi, event); break; case VIRTIO_SCSI_T_PARAM_CHANGE: virtscsi_handle_param_change(vscsi, event); break; default: pr_err("Unsupported virtio scsi event %x\n", event->event); } virtscsi_kick_event(vscsi, event_node); } static void virtscsi_complete_event(struct virtio_scsi *vscsi, void *buf) { struct virtio_scsi_event_node *event_node = buf; if (!vscsi->stop_events) queue_work(system_freezable_wq, &event_node->work); } static void virtscsi_event_done(struct virtqueue *vq) { struct Scsi_Host *sh = virtio_scsi_host(vq->vdev); struct virtio_scsi *vscsi = shost_priv(sh); virtscsi_vq_done(vscsi, &vscsi->event_vq, virtscsi_complete_event); }; static int __virtscsi_add_cmd(struct virtqueue *vq, struct virtio_scsi_cmd *cmd, size_t req_size, size_t resp_size) { struct scsi_cmnd *sc = cmd->sc; struct scatterlist *sgs[6], req, resp; struct sg_table *out, *in; unsigned out_num = 0, in_num = 0; out = in = NULL; if (sc && sc->sc_data_direction != DMA_NONE) { if (sc->sc_data_direction != DMA_FROM_DEVICE) out = &sc->sdb.table; if (sc->sc_data_direction != DMA_TO_DEVICE) in = &sc->sdb.table; } /* Request header. */ sg_init_one(&req, &cmd->req, req_size); sgs[out_num++] = &req; /* Data-out buffer. */ if (out) { /* Place WRITE protection SGLs before Data OUT payload */ if (scsi_prot_sg_count(sc)) sgs[out_num++] = scsi_prot_sglist(sc); sgs[out_num++] = out->sgl; } /* Response header. */ sg_init_one(&resp, &cmd->resp, resp_size); sgs[out_num + in_num++] = &resp; /* Data-in buffer */ if (in) { /* Place READ protection SGLs before Data IN payload */ if (scsi_prot_sg_count(sc)) sgs[out_num + in_num++] = scsi_prot_sglist(sc); sgs[out_num + in_num++] = in->sgl; } return virtqueue_add_sgs(vq, sgs, out_num, in_num, cmd, GFP_ATOMIC); } static void virtscsi_kick_vq(struct virtio_scsi_vq *vq) { bool needs_kick; unsigned long flags; spin_lock_irqsave(&vq->vq_lock, flags); needs_kick = virtqueue_kick_prepare(vq->vq); spin_unlock_irqrestore(&vq->vq_lock, flags); if (needs_kick) virtqueue_notify(vq->vq); } /** * virtscsi_add_cmd - add a virtio_scsi_cmd to a virtqueue, optionally kick it * @vq : the struct virtqueue we're talking about * @cmd : command structure * @req_size : size of the request buffer * @resp_size : size of the response buffer * @kick : whether to kick the virtqueue immediately */ static int virtscsi_add_cmd(struct virtio_scsi_vq *vq, struct virtio_scsi_cmd *cmd, size_t req_size, size_t resp_size, bool kick) { unsigned long flags; int err; bool needs_kick = false; spin_lock_irqsave(&vq->vq_lock, flags); err = __virtscsi_add_cmd(vq->vq, cmd, req_size, resp_size); if (!err && kick) needs_kick = virtqueue_kick_prepare(vq->vq); spin_unlock_irqrestore(&vq->vq_lock, flags); if (needs_kick) virtqueue_notify(vq->vq); return err; } static void virtio_scsi_init_hdr(struct virtio_device *vdev, struct virtio_scsi_cmd_req *cmd, struct scsi_cmnd *sc) { cmd->lun[0] = 1; cmd->lun[1] = sc->device->id; cmd->lun[2] = (sc->device->lun >> 8) | 0x40; cmd->lun[3] = sc->device->lun & 0xff; cmd->tag = cpu_to_virtio64(vdev, (unsigned long)sc); cmd->task_attr = VIRTIO_SCSI_S_SIMPLE; cmd->prio = 0; cmd->crn = 0; } #ifdef CONFIG_BLK_DEV_INTEGRITY static void virtio_scsi_init_hdr_pi(struct virtio_device *vdev, struct virtio_scsi_cmd_req_pi *cmd_pi, struct scsi_cmnd *sc) { struct request *rq = scsi_cmd_to_rq(sc); struct blk_integrity *bi; virtio_scsi_init_hdr(vdev, (struct virtio_scsi_cmd_req *)cmd_pi, sc); if (!rq || !scsi_prot_sg_count(sc)) return; bi = blk_get_integrity(rq->q->disk); if (sc->sc_data_direction == DMA_TO_DEVICE) cmd_pi->pi_bytesout = cpu_to_virtio32(vdev, bio_integrity_bytes(bi, blk_rq_sectors(rq))); else if (sc->sc_data_direction == DMA_FROM_DEVICE) cmd_pi->pi_bytesin = cpu_to_virtio32(vdev, bio_integrity_bytes(bi, blk_rq_sectors(rq))); } #endif static struct virtio_scsi_vq *virtscsi_pick_vq_mq(struct virtio_scsi *vscsi, struct scsi_cmnd *sc) { u32 tag = blk_mq_unique_tag(scsi_cmd_to_rq(sc)); u16 hwq = blk_mq_unique_tag_to_hwq(tag); return &vscsi->req_vqs[hwq]; } static int virtscsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *sc) { struct virtio_scsi *vscsi = shost_priv(shost); struct virtio_scsi_vq *req_vq = virtscsi_pick_vq_mq(vscsi, sc); struct virtio_scsi_cmd *cmd = scsi_cmd_priv(sc); bool kick; unsigned long flags; int req_size; int ret; BUG_ON(scsi_sg_count(sc) > shost->sg_tablesize); /* TODO: check feature bit and fail if unsupported? */ BUG_ON(sc->sc_data_direction == DMA_BIDIRECTIONAL); dev_dbg(&sc->device->sdev_gendev, "cmd %p CDB: %#02x\n", sc, sc->cmnd[0]); cmd->sc = sc; BUG_ON(sc->cmd_len > VIRTIO_SCSI_CDB_SIZE); #ifdef CONFIG_BLK_DEV_INTEGRITY if (virtio_has_feature(vscsi->vdev, VIRTIO_SCSI_F_T10_PI)) { virtio_scsi_init_hdr_pi(vscsi->vdev, &cmd->req.cmd_pi, sc); memcpy(cmd->req.cmd_pi.cdb, sc->cmnd, sc->cmd_len); req_size = sizeof(cmd->req.cmd_pi); } else #endif { virtio_scsi_init_hdr(vscsi->vdev, &cmd->req.cmd, sc); memcpy(cmd->req.cmd.cdb, sc->cmnd, sc->cmd_len); req_size = sizeof(cmd->req.cmd); } kick = (sc->flags & SCMD_LAST) != 0; ret = virtscsi_add_cmd(req_vq, cmd, req_size, sizeof(cmd->resp.cmd), kick); if (ret == -EIO) { cmd->resp.cmd.response = VIRTIO_SCSI_S_BAD_TARGET; spin_lock_irqsave(&req_vq->vq_lock, flags); virtscsi_complete_cmd(vscsi, cmd); spin_unlock_irqrestore(&req_vq->vq_lock, flags); } else if (ret != 0) { return SCSI_MLQUEUE_HOST_BUSY; } return 0; } static int virtscsi_tmf(struct virtio_scsi *vscsi, struct virtio_scsi_cmd *cmd) { DECLARE_COMPLETION_ONSTACK(comp); int ret = FAILED; cmd->comp = ∁ if (virtscsi_add_cmd(&vscsi->ctrl_vq, cmd, sizeof cmd->req.tmf, sizeof cmd->resp.tmf, true) < 0) goto out; wait_for_completion(&comp); if (cmd->resp.tmf.response == VIRTIO_SCSI_S_OK || cmd->resp.tmf.response == VIRTIO_SCSI_S_FUNCTION_SUCCEEDED) ret = SUCCESS; /* * The spec guarantees that all requests related to the TMF have * been completed, but the callback might not have run yet if * we're using independent interrupts (e.g. MSI). Poll the * virtqueues once. * * In the abort case, scsi_done() will do nothing, because the * command timed out and hence SCMD_STATE_COMPLETE has been set. */ virtscsi_poll_requests(vscsi); out: mempool_free(cmd, virtscsi_cmd_pool); return ret; } static int virtscsi_device_reset(struct scsi_cmnd *sc) { struct virtio_scsi *vscsi = shost_priv(sc->device->host); struct virtio_scsi_cmd *cmd; sdev_printk(KERN_INFO, sc->device, "device reset\n"); cmd = mempool_alloc(virtscsi_cmd_pool, GFP_NOIO); if (!cmd) return FAILED; memset(cmd, 0, sizeof(*cmd)); cmd->req.tmf = (struct virtio_scsi_ctrl_tmf_req){ .type = VIRTIO_SCSI_T_TMF, .subtype = cpu_to_virtio32(vscsi->vdev, VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET), .lun[0] = 1, .lun[1] = sc->device->id, .lun[2] = (sc->device->lun >> 8) | 0x40, .lun[3] = sc->device->lun & 0xff, }; return virtscsi_tmf(vscsi, cmd); } static int virtscsi_device_alloc(struct scsi_device *sdevice) { /* * Passed through SCSI targets (e.g. with qemu's 'scsi-block') * may have transfer limits which come from the host SCSI * controller or something on the host side other than the * target itself. * * To make this work properly, the hypervisor can adjust the * target's VPD information to advertise these limits. But * for that to work, the guest has to look at the VPD pages, * which we won't do by default if it is an SPC-2 device, even * if it does actually support it. * * So, set the blist to always try to read the VPD pages. */ sdevice->sdev_bflags = BLIST_TRY_VPD_PAGES; return 0; } /** * virtscsi_change_queue_depth() - Change a virtscsi target's queue depth * @sdev: Virtscsi target whose queue depth to change * @qdepth: New queue depth */ static int virtscsi_change_queue_depth(struct scsi_device *sdev, int qdepth) { struct Scsi_Host *shost = sdev->host; int max_depth = shost->cmd_per_lun; return scsi_change_queue_depth(sdev, min(max_depth, qdepth)); } static int virtscsi_abort(struct scsi_cmnd *sc) { struct virtio_scsi *vscsi = shost_priv(sc->device->host); struct virtio_scsi_cmd *cmd; scmd_printk(KERN_INFO, sc, "abort\n"); cmd = mempool_alloc(virtscsi_cmd_pool, GFP_NOIO); if (!cmd) return FAILED; memset(cmd, 0, sizeof(*cmd)); cmd->req.tmf = (struct virtio_scsi_ctrl_tmf_req){ .type = VIRTIO_SCSI_T_TMF, .subtype = VIRTIO_SCSI_T_TMF_ABORT_TASK, .lun[0] = 1, .lun[1] = sc->device->id, .lun[2] = (sc->device->lun >> 8) | 0x40, .lun[3] = sc->device->lun & 0xff, .tag = cpu_to_virtio64(vscsi->vdev, (unsigned long)sc), }; return virtscsi_tmf(vscsi, cmd); } static void virtscsi_map_queues(struct Scsi_Host *shost) { struct virtio_scsi *vscsi = shost_priv(shost); int i, qoff; for (i = 0, qoff = 0; i < shost->nr_maps; i++) { struct blk_mq_queue_map *map = &shost->tag_set.map[i]; map->nr_queues = vscsi->io_queues[i]; map->queue_offset = qoff; qoff += map->nr_queues; if (map->nr_queues == 0) continue; /* * Regular queues have interrupts and hence CPU affinity is * defined by the core virtio code, but polling queues have * no interrupts so we let the block layer assign CPU affinity. */ if (i == HCTX_TYPE_POLL) blk_mq_map_queues(map); else blk_mq_map_hw_queues(map, &vscsi->vdev->dev, 2); } } static int virtscsi_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) { struct virtio_scsi *vscsi = shost_priv(shost); struct virtio_scsi_vq *virtscsi_vq = &vscsi->req_vqs[queue_num]; unsigned long flags; unsigned int len; int found = 0; void *buf; spin_lock_irqsave(&virtscsi_vq->vq_lock, flags); while ((buf = virtqueue_get_buf(virtscsi_vq->vq, &len)) != NULL) { virtscsi_complete_cmd(vscsi, buf); found++; } spin_unlock_irqrestore(&virtscsi_vq->vq_lock, flags); return found; } static void virtscsi_commit_rqs(struct Scsi_Host *shost, u16 hwq) { struct virtio_scsi *vscsi = shost_priv(shost); virtscsi_kick_vq(&vscsi->req_vqs[hwq]); } /* * The host guarantees to respond to each command, although I/O * latencies might be higher than on bare metal. Reset the timer * unconditionally to give the host a chance to perform EH. */ static enum scsi_timeout_action virtscsi_eh_timed_out(struct scsi_cmnd *scmnd) { return SCSI_EH_RESET_TIMER; } static const struct scsi_host_template virtscsi_host_template = { .module = THIS_MODULE, .name = "Virtio SCSI HBA", .proc_name = "virtio_scsi", .this_id = -1, .cmd_size = sizeof(struct virtio_scsi_cmd), .queuecommand = virtscsi_queuecommand, .mq_poll = virtscsi_mq_poll, .commit_rqs = virtscsi_commit_rqs, .change_queue_depth = virtscsi_change_queue_depth, .eh_abort_handler = virtscsi_abort, .eh_device_reset_handler = virtscsi_device_reset, .eh_timed_out = virtscsi_eh_timed_out, .sdev_init = virtscsi_device_alloc, .dma_boundary = UINT_MAX, .map_queues = virtscsi_map_queues, .track_queue_depth = 1, }; #define virtscsi_config_get(vdev, fld) \ ({ \ __virtio_native_type(struct virtio_scsi_config, fld) __val; \ virtio_cread(vdev, struct virtio_scsi_config, fld, &__val); \ __val; \ }) #define virtscsi_config_set(vdev, fld, val) \ do { \ __virtio_native_type(struct virtio_scsi_config, fld) __val = (val); \ virtio_cwrite(vdev, struct virtio_scsi_config, fld, &__val); \ } while(0) static void virtscsi_init_vq(struct virtio_scsi_vq *virtscsi_vq, struct virtqueue *vq) { spin_lock_init(&virtscsi_vq->vq_lock); virtscsi_vq->vq = vq; } static void virtscsi_remove_vqs(struct virtio_device *vdev) { /* Stop all the virtqueues. */ virtio_reset_device(vdev); vdev->config->del_vqs(vdev); } static int virtscsi_init(struct virtio_device *vdev, struct virtio_scsi *vscsi) { int err; u32 i; u32 num_vqs, num_poll_vqs, num_req_vqs; struct virtqueue_info *vqs_info; struct virtqueue **vqs; struct irq_affinity desc = { .pre_vectors = 2 }; num_req_vqs = vscsi->num_queues; num_vqs = num_req_vqs + VIRTIO_SCSI_VQ_BASE; vqs = kmalloc_array(num_vqs, sizeof(struct virtqueue *), GFP_KERNEL); vqs_info = kcalloc(num_vqs, sizeof(*vqs_info), GFP_KERNEL); if (!vqs || !vqs_info) { err = -ENOMEM; goto out; } num_poll_vqs = min_t(unsigned int, virtscsi_poll_queues, num_req_vqs - 1); vscsi->io_queues[HCTX_TYPE_DEFAULT] = num_req_vqs - num_poll_vqs; vscsi->io_queues[HCTX_TYPE_READ] = 0; vscsi->io_queues[HCTX_TYPE_POLL] = num_poll_vqs; dev_info(&vdev->dev, "%d/%d/%d default/read/poll queues\n", vscsi->io_queues[HCTX_TYPE_DEFAULT], vscsi->io_queues[HCTX_TYPE_READ], vscsi->io_queues[HCTX_TYPE_POLL]); vqs_info[0].callback = virtscsi_ctrl_done; vqs_info[0].name = "control"; vqs_info[1].callback = virtscsi_event_done; vqs_info[1].name = "event"; for (i = VIRTIO_SCSI_VQ_BASE; i < num_vqs - num_poll_vqs; i++) { vqs_info[i].callback = virtscsi_req_done; vqs_info[i].name = "request"; } for (; i < num_vqs; i++) vqs_info[i].name = "request_poll"; /* Discover virtqueues and write information to configuration. */ err = virtio_find_vqs(vdev, num_vqs, vqs, vqs_info, &desc); if (err) goto out; virtscsi_init_vq(&vscsi->ctrl_vq, vqs[0]); virtscsi_init_vq(&vscsi->event_vq, vqs[1]); for (i = VIRTIO_SCSI_VQ_BASE; i < num_vqs; i++) virtscsi_init_vq(&vscsi->req_vqs[i - VIRTIO_SCSI_VQ_BASE], vqs[i]); virtscsi_config_set(vdev, cdb_size, VIRTIO_SCSI_CDB_SIZE); virtscsi_config_set(vdev, sense_size, VIRTIO_SCSI_SENSE_SIZE); err = 0; out: kfree(vqs_info); kfree(vqs); if (err) virtscsi_remove_vqs(vdev); return err; } static int virtscsi_probe(struct virtio_device *vdev) { struct Scsi_Host *shost; struct virtio_scsi *vscsi; int err; u32 sg_elems, num_targets; u32 cmd_per_lun; u32 num_queues; if (!vdev->config->get) { dev_err(&vdev->dev, "%s failure: config access disabled\n", __func__); return -EINVAL; } /* We need to know how many queues before we allocate. */ num_queues = virtscsi_config_get(vdev, num_queues) ? : 1; num_queues = min_t(unsigned int, nr_cpu_ids, num_queues); num_targets = virtscsi_config_get(vdev, max_target) + 1; shost = scsi_host_alloc(&virtscsi_host_template, struct_size(vscsi, req_vqs, num_queues)); if (!shost) return -ENOMEM; sg_elems = virtscsi_config_get(vdev, seg_max) ?: 1; shost->sg_tablesize = sg_elems; shost->nr_maps = 1; vscsi = shost_priv(shost); vscsi->vdev = vdev; vscsi->num_queues = num_queues; vdev->priv = shost; err = virtscsi_init(vdev, vscsi); if (err) goto virtscsi_init_failed; if (vscsi->io_queues[HCTX_TYPE_POLL]) shost->nr_maps = HCTX_TYPE_POLL + 1; shost->can_queue = virtqueue_get_vring_size(vscsi->req_vqs[0].vq); cmd_per_lun = virtscsi_config_get(vdev, cmd_per_lun) ?: 1; shost->cmd_per_lun = min_t(u32, cmd_per_lun, shost->can_queue); shost->max_sectors = virtscsi_config_get(vdev, max_sectors) ?: 0xFFFF; /* LUNs > 256 are reported with format 1, so they go in the range * 16640-32767. */ shost->max_lun = virtscsi_config_get(vdev, max_lun) + 1 + 0x4000; shost->max_id = num_targets; shost->max_channel = 0; shost->max_cmd_len = VIRTIO_SCSI_CDB_SIZE; shost->nr_hw_queues = num_queues; #ifdef CONFIG_BLK_DEV_INTEGRITY if (virtio_has_feature(vdev, VIRTIO_SCSI_F_T10_PI)) { int host_prot; host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION | SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION | SHOST_DIX_TYPE2_PROTECTION | SHOST_DIX_TYPE3_PROTECTION; scsi_host_set_prot(shost, host_prot); scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); } #endif err = scsi_add_host(shost, &vdev->dev); if (err) goto scsi_add_host_failed; virtio_device_ready(vdev); if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) virtscsi_kick_event_all(vscsi); scsi_scan_host(shost); return 0; scsi_add_host_failed: vdev->config->del_vqs(vdev); virtscsi_init_failed: scsi_host_put(shost); return err; } static void virtscsi_remove(struct virtio_device *vdev) { struct Scsi_Host *shost = virtio_scsi_host(vdev); struct virtio_scsi *vscsi = shost_priv(shost); if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) virtscsi_cancel_event_work(vscsi); scsi_remove_host(shost); virtscsi_remove_vqs(vdev); scsi_host_put(shost); } #ifdef CONFIG_PM_SLEEP static int virtscsi_freeze(struct virtio_device *vdev) { virtscsi_remove_vqs(vdev); return 0; } static int virtscsi_restore(struct virtio_device *vdev) { struct Scsi_Host *sh = virtio_scsi_host(vdev); struct virtio_scsi *vscsi = shost_priv(sh); int err; err = virtscsi_init(vdev, vscsi); if (err) return err; virtio_device_ready(vdev); if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) virtscsi_kick_event_all(vscsi); return err; } #endif static struct virtio_device_id id_table[] = { { VIRTIO_ID_SCSI, VIRTIO_DEV_ANY_ID }, { 0 }, }; static unsigned int features[] = { VIRTIO_SCSI_F_HOTPLUG, VIRTIO_SCSI_F_CHANGE, #ifdef CONFIG_BLK_DEV_INTEGRITY VIRTIO_SCSI_F_T10_PI, #endif }; static struct virtio_driver virtio_scsi_driver = { .feature_table = features, .feature_table_size = ARRAY_SIZE(features), .driver.name = KBUILD_MODNAME, .id_table = id_table, .probe = virtscsi_probe, #ifdef CONFIG_PM_SLEEP .freeze = virtscsi_freeze, .restore = virtscsi_restore, #endif .remove = virtscsi_remove, }; static int __init virtio_scsi_init(void) { int ret = -ENOMEM; virtscsi_cmd_cache = KMEM_CACHE(virtio_scsi_cmd, 0); if (!virtscsi_cmd_cache) { pr_err("kmem_cache_create() for virtscsi_cmd_cache failed\n"); goto error; } virtscsi_cmd_pool = mempool_create_slab_pool(VIRTIO_SCSI_MEMPOOL_SZ, virtscsi_cmd_cache); if (!virtscsi_cmd_pool) { pr_err("mempool_create() for virtscsi_cmd_pool failed\n"); goto error; } ret = register_virtio_driver(&virtio_scsi_driver); if (ret < 0) goto error; return 0; error: mempool_destroy(virtscsi_cmd_pool); virtscsi_cmd_pool = NULL; kmem_cache_destroy(virtscsi_cmd_cache); virtscsi_cmd_cache = NULL; return ret; } static void __exit virtio_scsi_fini(void) { unregister_virtio_driver(&virtio_scsi_driver); mempool_destroy(virtscsi_cmd_pool); kmem_cache_destroy(virtscsi_cmd_cache); } module_init(virtio_scsi_init); module_exit(virtio_scsi_fini); MODULE_DEVICE_TABLE(virtio, id_table); MODULE_DESCRIPTION("Virtio SCSI HBA driver"); MODULE_LICENSE("GPL"); |
| 3189 124 1393 3260 | 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 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_ERR_H #define _LINUX_ERR_H #include <linux/compiler.h> #include <linux/types.h> #include <asm/errno.h> /* * Kernel pointers have redundant information, so we can use a * scheme where we can return either an error code or a normal * pointer with the same return value. * * This should be a per-architecture thing, to allow different * error and pointer decisions. */ #define MAX_ERRNO 4095 #ifndef __ASSEMBLY__ /** * IS_ERR_VALUE - Detect an error pointer. * @x: The pointer to check. * * Like IS_ERR(), but does not generate a compiler warning if result is unused. */ #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) /** * ERR_PTR - Create an error pointer. * @error: A negative error code. * * Encodes @error into a pointer value. Users should consider the result * opaque and not assume anything about how the error is encoded. * * Return: A pointer with @error encoded within its value. */ static inline void * __must_check ERR_PTR(long error) { return (void *) error; } /* Return the pointer in the percpu address space. */ #define ERR_PTR_PCPU(error) ((void __percpu *)(unsigned long)ERR_PTR(error)) /* Cast an error pointer to __iomem. */ #define IOMEM_ERR_PTR(error) (__force void __iomem *)ERR_PTR(error) /** * PTR_ERR - Extract the error code from an error pointer. * @ptr: An error pointer. * Return: The error code within @ptr. */ static inline long __must_check PTR_ERR(__force const void *ptr) { return (long) ptr; } /* Read an error pointer from the percpu address space. */ #define PTR_ERR_PCPU(ptr) (PTR_ERR((const void *)(__force const unsigned long)(ptr))) /** * IS_ERR - Detect an error pointer. * @ptr: The pointer to check. * Return: true if @ptr is an error pointer, false otherwise. */ static inline bool __must_check IS_ERR(__force const void *ptr) { return IS_ERR_VALUE((unsigned long)ptr); } /* Read an error pointer from the percpu address space. */ #define IS_ERR_PCPU(ptr) (IS_ERR((const void *)(__force const unsigned long)(ptr))) /** * IS_ERR_OR_NULL - Detect an error pointer or a null pointer. * @ptr: The pointer to check. * * Like IS_ERR(), but also returns true for a null pointer. */ static inline bool __must_check IS_ERR_OR_NULL(__force const void *ptr) { return unlikely(!ptr) || IS_ERR_VALUE((unsigned long)ptr); } /** * ERR_CAST - Explicitly cast an error-valued pointer to another pointer type * @ptr: The pointer to cast. * * Explicitly cast an error-valued pointer to another pointer type in such a * way as to make it clear that's what's going on. */ static inline void * __must_check ERR_CAST(__force const void *ptr) { /* cast away the const */ return (void *) ptr; } /** * PTR_ERR_OR_ZERO - Extract the error code from a pointer if it has one. * @ptr: A potential error pointer. * * Convenience function that can be used inside a function that returns * an error code to propagate errors received as error pointers. * For example, ``return PTR_ERR_OR_ZERO(ptr);`` replaces: * * .. code-block:: c * * if (IS_ERR(ptr)) * return PTR_ERR(ptr); * else * return 0; * * Return: The error code within @ptr if it is an error pointer; 0 otherwise. */ static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr) { if (IS_ERR(ptr)) return PTR_ERR(ptr); else return 0; } #endif #endif /* _LINUX_ERR_H */ |
| 45 44 45 44 45 45 45 45 45 45 43 45 45 44 5 45 45 54 54 23 54 52 54 54 14 12 12 12 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 | // SPDX-License-Identifier: GPL-2.0-only /* * LED Class Core * * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu> * Copyright (C) 2005-2007 Richard Purdie <rpurdie@openedhand.com> */ #include <linux/ctype.h> #include <linux/device.h> #include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/leds.h> #include <linux/list.h> #include <linux/module.h> #include <linux/property.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/timer.h> #include <uapi/linux/uleds.h> #include <linux/of.h> #include "leds.h" static DEFINE_MUTEX(leds_lookup_lock); static LIST_HEAD(leds_lookup_list); static struct workqueue_struct *leds_wq; static ssize_t brightness_show(struct device *dev, struct device_attribute *attr, char *buf) { struct led_classdev *led_cdev = dev_get_drvdata(dev); unsigned int brightness; mutex_lock(&led_cdev->led_access); led_update_brightness(led_cdev); brightness = led_cdev->brightness; mutex_unlock(&led_cdev->led_access); return sprintf(buf, "%u\n", brightness); } static ssize_t brightness_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size) { struct led_classdev *led_cdev = dev_get_drvdata(dev); unsigned long state; ssize_t ret; mutex_lock(&led_cdev->led_access); if (led_sysfs_is_disabled(led_cdev)) { ret = -EBUSY; goto unlock; } ret = kstrtoul(buf, 10, &state); if (ret) goto unlock; if (state == LED_OFF) led_trigger_remove(led_cdev); led_set_brightness(led_cdev, state); ret = size; unlock: mutex_unlock(&led_cdev->led_access); return ret; } static DEVICE_ATTR_RW(brightness); static ssize_t max_brightness_show(struct device *dev, struct device_attribute *attr, char *buf) { struct led_classdev *led_cdev = dev_get_drvdata(dev); unsigned int max_brightness; mutex_lock(&led_cdev->led_access); max_brightness = led_cdev->max_brightness; mutex_unlock(&led_cdev->led_access); return sprintf(buf, "%u\n", max_brightness); } static DEVICE_ATTR_RO(max_brightness); #ifdef CONFIG_LEDS_TRIGGERS static const BIN_ATTR(trigger, 0644, led_trigger_read, led_trigger_write, 0); static const struct bin_attribute *const led_trigger_bin_attrs[] = { &bin_attr_trigger, NULL, }; static const struct attribute_group led_trigger_group = { .bin_attrs_new = led_trigger_bin_attrs, }; #endif static struct attribute *led_class_attrs[] = { &dev_attr_brightness.attr, &dev_attr_max_brightness.attr, NULL, }; static const struct attribute_group led_group = { .attrs = led_class_attrs, }; static const struct attribute_group *led_groups[] = { &led_group, #ifdef CONFIG_LEDS_TRIGGERS &led_trigger_group, #endif NULL, }; #ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED static ssize_t brightness_hw_changed_show(struct device *dev, struct device_attribute *attr, char *buf) { struct led_classdev *led_cdev = dev_get_drvdata(dev); if (led_cdev->brightness_hw_changed == -1) return -ENODATA; return sprintf(buf, "%u\n", led_cdev->brightness_hw_changed); } static DEVICE_ATTR_RO(brightness_hw_changed); static int led_add_brightness_hw_changed(struct led_classdev *led_cdev) { struct device *dev = led_cdev->dev; int ret; ret = device_create_file(dev, &dev_attr_brightness_hw_changed); if (ret) { dev_err(dev, "Error creating brightness_hw_changed\n"); return ret; } led_cdev->brightness_hw_changed_kn = sysfs_get_dirent(dev->kobj.sd, "brightness_hw_changed"); if (!led_cdev->brightness_hw_changed_kn) { dev_err(dev, "Error getting brightness_hw_changed kn\n"); device_remove_file(dev, &dev_attr_brightness_hw_changed); return -ENXIO; } return 0; } static void led_remove_brightness_hw_changed(struct led_classdev *led_cdev) { sysfs_put(led_cdev->brightness_hw_changed_kn); device_remove_file(led_cdev->dev, &dev_attr_brightness_hw_changed); } void led_classdev_notify_brightness_hw_changed(struct led_classdev *led_cdev, unsigned int brightness) { if (WARN_ON(!led_cdev->brightness_hw_changed_kn)) return; led_cdev->brightness_hw_changed = brightness; sysfs_notify_dirent(led_cdev->brightness_hw_changed_kn); } EXPORT_SYMBOL_GPL(led_classdev_notify_brightness_hw_changed); #else static int led_add_brightness_hw_changed(struct led_classdev *led_cdev) { return 0; } static void led_remove_brightness_hw_changed(struct led_classdev *led_cdev) { } #endif /** * led_classdev_suspend - suspend an led_classdev. * @led_cdev: the led_classdev to suspend. */ void led_classdev_suspend(struct led_classdev *led_cdev) { led_cdev->flags |= LED_SUSPENDED; led_set_brightness_nopm(led_cdev, 0); flush_work(&led_cdev->set_brightness_work); } EXPORT_SYMBOL_GPL(led_classdev_suspend); /** * led_classdev_resume - resume an led_classdev. * @led_cdev: the led_classdev to resume. */ void led_classdev_resume(struct led_classdev *led_cdev) { led_set_brightness_nopm(led_cdev, led_cdev->brightness); if (led_cdev->flash_resume) led_cdev->flash_resume(led_cdev); led_cdev->flags &= ~LED_SUSPENDED; } EXPORT_SYMBOL_GPL(led_classdev_resume); #ifdef CONFIG_PM_SLEEP static int led_suspend(struct device *dev) { struct led_classdev *led_cdev = dev_get_drvdata(dev); if (led_cdev->flags & LED_CORE_SUSPENDRESUME) led_classdev_suspend(led_cdev); return 0; } static int led_resume(struct device *dev) { struct led_classdev *led_cdev = dev_get_drvdata(dev); if (led_cdev->flags & LED_CORE_SUSPENDRESUME) led_classdev_resume(led_cdev); return 0; } #endif static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume); static struct led_classdev *led_module_get(struct device *led_dev) { struct led_classdev *led_cdev; if (!led_dev) return ERR_PTR(-EPROBE_DEFER); led_cdev = dev_get_drvdata(led_dev); if (!try_module_get(led_cdev->dev->parent->driver->owner)) { put_device(led_cdev->dev); return ERR_PTR(-ENODEV); } return led_cdev; } static const struct class leds_class = { .name = "leds", .dev_groups = led_groups, .pm = &leds_class_dev_pm_ops, }; /** * of_led_get() - request a LED device via the LED framework * @np: device node to get the LED device from * @index: the index of the LED * * Returns the LED device parsed from the phandle specified in the "leds" * property of a device tree node or a negative error-code on failure. */ struct led_classdev *of_led_get(struct device_node *np, int index) { struct device *led_dev; struct device_node *led_node; led_node = of_parse_phandle(np, "leds", index); if (!led_node) return ERR_PTR(-ENOENT); led_dev = class_find_device_by_of_node(&leds_class, led_node); of_node_put(led_node); return led_module_get(led_dev); } EXPORT_SYMBOL_GPL(of_led_get); /** * led_put() - release a LED device * @led_cdev: LED device */ void led_put(struct led_classdev *led_cdev) { module_put(led_cdev->dev->parent->driver->owner); put_device(led_cdev->dev); } EXPORT_SYMBOL_GPL(led_put); static void devm_led_release(struct device *dev, void *res) { struct led_classdev **p = res; led_put(*p); } static struct led_classdev *__devm_led_get(struct device *dev, struct led_classdev *led) { struct led_classdev **dr; dr = devres_alloc(devm_led_release, sizeof(struct led_classdev *), GFP_KERNEL); if (!dr) { led_put(led); return ERR_PTR(-ENOMEM); } *dr = led; devres_add(dev, dr); return led; } /** * devm_of_led_get - Resource-managed request of a LED device * @dev: LED consumer * @index: index of the LED to obtain in the consumer * * The device node of the device is parse to find the request LED device. * The LED device returned from this function is automatically released * on driver detach. * * @return a pointer to a LED device or ERR_PTR(errno) on failure. */ struct led_classdev *__must_check devm_of_led_get(struct device *dev, int index) { struct led_classdev *led; if (!dev) return ERR_PTR(-EINVAL); led = of_led_get(dev->of_node, index); if (IS_ERR(led)) return led; return __devm_led_get(dev, led); } EXPORT_SYMBOL_GPL(devm_of_led_get); /** * led_get() - request a LED device via the LED framework * @dev: device for which to get the LED device * @con_id: name of the LED from the device's point of view * * @return a pointer to a LED device or ERR_PTR(errno) on failure. */ struct led_classdev *led_get(struct device *dev, char *con_id) { struct led_lookup_data *lookup; const char *provider = NULL; struct device *led_dev; mutex_lock(&leds_lookup_lock); list_for_each_entry(lookup, &leds_lookup_list, list) { if (!strcmp(lookup->dev_id, dev_name(dev)) && !strcmp(lookup->con_id, con_id)) { provider = kstrdup_const(lookup->provider, GFP_KERNEL); break; } } mutex_unlock(&leds_lookup_lock); if (!provider) return ERR_PTR(-ENOENT); led_dev = class_find_device_by_name(&leds_class, provider); kfree_const(provider); return led_module_get(led_dev); } EXPORT_SYMBOL_GPL(led_get); /** * devm_led_get() - request a LED device via the LED framework * @dev: device for which to get the LED device * @con_id: name of the LED from the device's point of view * * The LED device returned from this function is automatically released * on driver detach. * * @return a pointer to a LED device or ERR_PTR(errno) on failure. */ struct led_classdev *devm_led_get(struct device *dev, char *con_id) { struct led_classdev *led; led = led_get(dev, con_id); if (IS_ERR(led)) return led; return __devm_led_get(dev, led); } EXPORT_SYMBOL_GPL(devm_led_get); /** * led_add_lookup() - Add a LED lookup table entry * @led_lookup: the lookup table entry to add * * Add a LED lookup table entry. On systems without devicetree the lookup table * is used by led_get() to find LEDs. */ void led_add_lookup(struct led_lookup_data *led_lookup) { mutex_lock(&leds_lookup_lock); list_add_tail(&led_lookup->list, &leds_lookup_list); mutex_unlock(&leds_lookup_lock); } EXPORT_SYMBOL_GPL(led_add_lookup); /** * led_remove_lookup() - Remove a LED lookup table entry * @led_lookup: the lookup table entry to remove */ void led_remove_lookup(struct led_lookup_data *led_lookup) { mutex_lock(&leds_lookup_lock); list_del(&led_lookup->list); mutex_unlock(&leds_lookup_lock); } EXPORT_SYMBOL_GPL(led_remove_lookup); /** * devm_of_led_get_optional - Resource-managed request of an optional LED device * @dev: LED consumer * @index: index of the LED to obtain in the consumer * * The device node of the device is parsed to find the requested LED device. * The LED device returned from this function is automatically released * on driver detach. * * @return a pointer to a LED device, ERR_PTR(errno) on failure and NULL if the * led was not found. */ struct led_classdev *__must_check devm_of_led_get_optional(struct device *dev, int index) { struct led_classdev *led; led = devm_of_led_get(dev, index); if (IS_ERR(led) && PTR_ERR(led) == -ENOENT) return NULL; return led; } EXPORT_SYMBOL_GPL(devm_of_led_get_optional); static int led_classdev_next_name(const char *init_name, char *name, size_t len) { unsigned int i = 0; int ret = 0; struct device *dev; strscpy(name, init_name, len); while ((ret < len) && (dev = class_find_device_by_name(&leds_class, name))) { put_device(dev); ret = snprintf(name, len, "%s_%u", init_name, ++i); } if (ret >= len) return -ENOMEM; return i; } /** * led_classdev_register_ext - register a new object of led_classdev class * with init data. * * @parent: parent of LED device * @led_cdev: the led_classdev structure for this device. * @init_data: LED class device initialization data */ int led_classdev_register_ext(struct device *parent, struct led_classdev *led_cdev, struct led_init_data *init_data) { char composed_name[LED_MAX_NAME_SIZE]; char final_name[LED_MAX_NAME_SIZE]; const char *proposed_name = composed_name; int ret; if (init_data) { if (init_data->devname_mandatory && !init_data->devicename) { dev_err(parent, "Mandatory device name is missing"); return -EINVAL; } ret = led_compose_name(parent, init_data, composed_name); if (ret < 0) return ret; if (init_data->fwnode) { fwnode_property_read_string(init_data->fwnode, "linux,default-trigger", &led_cdev->default_trigger); if (fwnode_property_present(init_data->fwnode, "retain-state-shutdown")) led_cdev->flags |= LED_RETAIN_AT_SHUTDOWN; fwnode_property_read_u32(init_data->fwnode, "max-brightness", &led_cdev->max_brightness); if (fwnode_property_present(init_data->fwnode, "color")) fwnode_property_read_u32(init_data->fwnode, "color", &led_cdev->color); } } else { proposed_name = led_cdev->name; } ret = led_classdev_next_name(proposed_name, final_name, sizeof(final_name)); if (ret < 0) return ret; else if (ret && led_cdev->flags & LED_REJECT_NAME_CONFLICT) return -EEXIST; else if (ret) dev_warn(parent, "Led %s renamed to %s due to name collision\n", proposed_name, final_name); if (led_cdev->color >= LED_COLOR_ID_MAX) dev_warn(parent, "LED %s color identifier out of range\n", final_name); mutex_init(&led_cdev->led_access); mutex_lock(&led_cdev->led_access); led_cdev->dev = device_create_with_groups(&leds_class, parent, 0, led_cdev, led_cdev->groups, "%s", final_name); if (IS_ERR(led_cdev->dev)) { mutex_unlock(&led_cdev->led_access); return PTR_ERR(led_cdev->dev); } if (init_data && init_data->fwnode) device_set_node(led_cdev->dev, init_data->fwnode); if (led_cdev->flags & LED_BRIGHT_HW_CHANGED) { ret = led_add_brightness_hw_changed(led_cdev); if (ret) { device_unregister(led_cdev->dev); led_cdev->dev = NULL; mutex_unlock(&led_cdev->led_access); return ret; } } led_cdev->work_flags = 0; #ifdef CONFIG_LEDS_TRIGGERS init_rwsem(&led_cdev->trigger_lock); #endif #ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED led_cdev->brightness_hw_changed = -1; #endif /* add to the list of leds */ down_write(&leds_list_lock); list_add_tail(&led_cdev->node, &leds_list); up_write(&leds_list_lock); if (!led_cdev->max_brightness) led_cdev->max_brightness = LED_FULL; led_update_brightness(led_cdev); led_cdev->wq = leds_wq; led_init_core(led_cdev); #ifdef CONFIG_LEDS_TRIGGERS led_trigger_set_default(led_cdev); #endif mutex_unlock(&led_cdev->led_access); dev_dbg(parent, "Registered led device: %s\n", led_cdev->name); return 0; } EXPORT_SYMBOL_GPL(led_classdev_register_ext); /** * led_classdev_unregister - unregisters a object of led_properties class. * @led_cdev: the led device to unregister * * Unregisters a previously registered via led_classdev_register object. */ void led_classdev_unregister(struct led_classdev *led_cdev) { if (IS_ERR_OR_NULL(led_cdev->dev)) return; #ifdef CONFIG_LEDS_TRIGGERS down_write(&led_cdev->trigger_lock); if (led_cdev->trigger) led_trigger_set(led_cdev, NULL); up_write(&led_cdev->trigger_lock); #endif led_cdev->flags |= LED_UNREGISTERING; /* Stop blinking */ led_stop_software_blink(led_cdev); if (!(led_cdev->flags & LED_RETAIN_AT_SHUTDOWN)) led_set_brightness(led_cdev, LED_OFF); flush_work(&led_cdev->set_brightness_work); if (led_cdev->flags & LED_BRIGHT_HW_CHANGED) led_remove_brightness_hw_changed(led_cdev); device_unregister(led_cdev->dev); down_write(&leds_list_lock); list_del(&led_cdev->node); up_write(&leds_list_lock); mutex_destroy(&led_cdev->led_access); } EXPORT_SYMBOL_GPL(led_classdev_unregister); static void devm_led_classdev_release(struct device *dev, void *res) { led_classdev_unregister(*(struct led_classdev **)res); } /** * devm_led_classdev_register_ext - resource managed led_classdev_register_ext() * * @parent: parent of LED device * @led_cdev: the led_classdev structure for this device. * @init_data: LED class device initialization data */ int devm_led_classdev_register_ext(struct device *parent, struct led_classdev *led_cdev, struct led_init_data *init_data) { struct led_classdev **dr; int rc; dr = devres_alloc(devm_led_classdev_release, sizeof(*dr), GFP_KERNEL); if (!dr) return -ENOMEM; rc = led_classdev_register_ext(parent, led_cdev, init_data); if (rc) { devres_free(dr); return rc; } *dr = led_cdev; devres_add(parent, dr); return 0; } EXPORT_SYMBOL_GPL(devm_led_classdev_register_ext); static int devm_led_classdev_match(struct device *dev, void *res, void *data) { struct led_classdev **p = res; if (WARN_ON(!p || !*p)) return 0; return *p == data; } /** * devm_led_classdev_unregister() - resource managed led_classdev_unregister() * @dev: The device to unregister. * @led_cdev: the led_classdev structure for this device. */ void devm_led_classdev_unregister(struct device *dev, struct led_classdev *led_cdev) { WARN_ON(devres_release(dev, devm_led_classdev_release, devm_led_classdev_match, led_cdev)); } EXPORT_SYMBOL_GPL(devm_led_classdev_unregister); static int __init leds_init(void) { leds_wq = alloc_ordered_workqueue("leds", 0); if (!leds_wq) { pr_err("Failed to create LEDs ordered workqueue\n"); return -ENOMEM; } return class_register(&leds_class); } static void __exit leds_exit(void) { class_unregister(&leds_class); destroy_workqueue(leds_wq); } subsys_initcall(leds_init); module_exit(leds_exit); MODULE_AUTHOR("John Lenz, Richard Purdie"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("LED Class Interface"); |
| 14 14 | 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 | // SPDX-License-Identifier: GPL-2.0 /* * consolemap.c * * Mapping from internal code (such as Latin-1 or Unicode or IBM PC code) * to font positions. * * aeb, 950210 * * Support for multiple unimaps by Jakub Jelinek <jj@ultra.linux.cz>, July 1998 * * Fix bug in inverse translation. Stanislav Voronyi <stas@cnti.uanet.kharkov.ua>, Dec 1998 * * In order to prevent the following circular lock dependency: * &mm->mmap_lock --> cpu_hotplug.lock --> console_lock --> &mm->mmap_lock * * We cannot allow page fault to happen while holding the console_lock. * Therefore, all the userspace copy operations have to be done outside * the console_lock critical sections. * * As all the affected functions are all called directly from vt_ioctl(), we * can allocate some small buffers directly on stack without worrying about * stack overflow. */ #include <linux/bitfield.h> #include <linux/bits.h> #include <linux/module.h> #include <linux/kd.h> #include <linux/errno.h> #include <linux/mm.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/tty.h> #include <linux/uaccess.h> #include <linux/console.h> #include <linux/consolemap.h> #include <linux/vt_kern.h> #include <linux/string.h> static unsigned short translations[][E_TABSZ] = { /* 8-bit Latin-1 mapped to Unicode -- trivial mapping */ [LAT1_MAP] = { 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x007f, 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087, 0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f, 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097, 0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f, 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af, 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf, 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7, 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7, 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff }, /* VT100 graphics mapped to Unicode */ [GRAF_MAP] = { 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x2192, 0x2190, 0x2191, 0x2193, 0x002f, 0x2588, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x00a0, 0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1, 0x2591, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba, 0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c, 0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x007f, 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087, 0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f, 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097, 0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f, 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af, 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf, 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7, 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7, 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff }, /* IBM Codepage 437 mapped to Unicode */ [IBMPC_MAP] = { 0x0000, 0x263a, 0x263b, 0x2665, 0x2666, 0x2663, 0x2660, 0x2022, 0x25d8, 0x25cb, 0x25d9, 0x2642, 0x2640, 0x266a, 0x266b, 0x263c, 0x25b6, 0x25c0, 0x2195, 0x203c, 0x00b6, 0x00a7, 0x25ac, 0x21a8, 0x2191, 0x2193, 0x2192, 0x2190, 0x221f, 0x2194, 0x25b2, 0x25bc, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x2302, 0x00c7, 0x00fc, 0x00e9, 0x00e2, 0x00e4, 0x00e0, 0x00e5, 0x00e7, 0x00ea, 0x00eb, 0x00e8, 0x00ef, 0x00ee, 0x00ec, 0x00c4, 0x00c5, 0x00c9, 0x00e6, 0x00c6, 0x00f4, 0x00f6, 0x00f2, 0x00fb, 0x00f9, 0x00ff, 0x00d6, 0x00dc, 0x00a2, 0x00a3, 0x00a5, 0x20a7, 0x0192, 0x00e1, 0x00ed, 0x00f3, 0x00fa, 0x00f1, 0x00d1, 0x00aa, 0x00ba, 0x00bf, 0x2310, 0x00ac, 0x00bd, 0x00bc, 0x00a1, 0x00ab, 0x00bb, 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255d, 0x255c, 0x255b, 0x2510, 0x2514, 0x2534, 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f, 0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x2567, 0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256b, 0x256a, 0x2518, 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580, 0x03b1, 0x00df, 0x0393, 0x03c0, 0x03a3, 0x03c3, 0x00b5, 0x03c4, 0x03a6, 0x0398, 0x03a9, 0x03b4, 0x221e, 0x03c6, 0x03b5, 0x2229, 0x2261, 0x00b1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00f7, 0x2248, 0x00b0, 0x2219, 0x00b7, 0x221a, 0x207f, 0x00b2, 0x25a0, 0x00a0 }, /* User mapping -- default to codes for direct font mapping */ [USER_MAP] = { 0xf000, 0xf001, 0xf002, 0xf003, 0xf004, 0xf005, 0xf006, 0xf007, 0xf008, 0xf009, 0xf00a, 0xf00b, 0xf00c, 0xf00d, 0xf00e, 0xf00f, 0xf010, 0xf011, 0xf012, 0xf013, 0xf014, 0xf015, 0xf016, 0xf017, 0xf018, 0xf019, 0xf01a, 0xf01b, 0xf01c, 0xf01d, 0xf01e, 0xf01f, 0xf020, 0xf021, 0xf022, 0xf023, 0xf024, 0xf025, 0xf026, 0xf027, 0xf028, 0xf029, 0xf02a, 0xf02b, 0xf02c, 0xf02d, 0xf02e, 0xf02f, 0xf030, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036, 0xf037, 0xf038, 0xf039, 0xf03a, 0xf03b, 0xf03c, 0xf03d, 0xf03e, 0xf03f, 0xf040, 0xf041, 0xf042, 0xf043, 0xf044, 0xf045, 0xf046, 0xf047, 0xf048, 0xf049, 0xf04a, 0xf04b, 0xf04c, 0xf04d, 0xf04e, 0xf04f, 0xf050, 0xf051, 0xf052, 0xf053, 0xf054, 0xf055, 0xf056, 0xf057, 0xf058, 0xf059, 0xf05a, 0xf05b, 0xf05c, 0xf05d, 0xf05e, 0xf05f, 0xf060, 0xf061, 0xf062, 0xf063, 0xf064, 0xf065, 0xf066, 0xf067, 0xf068, 0xf069, 0xf06a, 0xf06b, 0xf06c, 0xf06d, 0xf06e, 0xf06f, 0xf070, 0xf071, 0xf072, 0xf073, 0xf074, 0xf075, 0xf076, 0xf077, 0xf078, 0xf079, 0xf07a, 0xf07b, 0xf07c, 0xf07d, 0xf07e, 0xf07f, 0xf080, 0xf081, 0xf082, 0xf083, 0xf084, 0xf085, 0xf086, 0xf087, 0xf088, 0xf089, 0xf08a, 0xf08b, 0xf08c, 0xf08d, 0xf08e, 0xf08f, 0xf090, 0xf091, 0xf092, 0xf093, 0xf094, 0xf095, 0xf096, 0xf097, 0xf098, 0xf099, 0xf09a, 0xf09b, 0xf09c, 0xf09d, 0xf09e, 0xf09f, 0xf0a0, 0xf0a1, 0xf0a2, 0xf0a3, 0xf0a4, 0xf0a5, 0xf0a6, 0xf0a7, 0xf0a8, 0xf0a9, 0xf0aa, 0xf0ab, 0xf0ac, 0xf0ad, 0xf0ae, 0xf0af, 0xf0b0, 0xf0b1, 0xf0b2, 0xf0b3, 0xf0b4, 0xf0b5, 0xf0b6, 0xf0b7, 0xf0b8, 0xf0b9, 0xf0ba, 0xf0bb, 0xf0bc, 0xf0bd, 0xf0be, 0xf0bf, 0xf0c0, 0xf0c1, 0xf0c2, 0xf0c3, 0xf0c4, 0xf0c5, 0xf0c6, 0xf0c7, 0xf0c8, 0xf0c9, 0xf0ca, 0xf0cb, 0xf0cc, 0xf0cd, 0xf0ce, 0xf0cf, 0xf0d0, 0xf0d1, 0xf0d2, 0xf0d3, 0xf0d4, 0xf0d5, 0xf0d6, 0xf0d7, 0xf0d8, 0xf0d9, 0xf0da, 0xf0db, 0xf0dc, 0xf0dd, 0xf0de, 0xf0df, 0xf0e0, 0xf0e1, 0xf0e2, 0xf0e3, 0xf0e4, 0xf0e5, 0xf0e6, 0xf0e7, 0xf0e8, 0xf0e9, 0xf0ea, 0xf0eb, 0xf0ec, 0xf0ed, 0xf0ee, 0xf0ef, 0xf0f0, 0xf0f1, 0xf0f2, 0xf0f3, 0xf0f4, 0xf0f5, 0xf0f6, 0xf0f7, 0xf0f8, 0xf0f9, 0xf0fa, 0xf0fb, 0xf0fc, 0xf0fd, 0xf0fe, 0xf0ff } }; /* The standard kernel character-to-font mappings are not invertible -- this is just a best effort. */ #define MAX_GLYPH 512 /* Max possible glyph value */ static enum translation_map inv_translate[MAX_NR_CONSOLES]; #define UNI_DIRS 32U #define UNI_DIR_ROWS 32U #define UNI_ROW_GLYPHS 64U #define UNI_DIR_BITS GENMASK(15, 11) #define UNI_ROW_BITS GENMASK(10, 6) #define UNI_GLYPH_BITS GENMASK( 5, 0) #define UNI_DIR(uni) FIELD_GET(UNI_DIR_BITS, (uni)) #define UNI_ROW(uni) FIELD_GET(UNI_ROW_BITS, (uni)) #define UNI_GLYPH(uni) FIELD_GET(UNI_GLYPH_BITS, (uni)) #define UNI(dir, row, glyph) (FIELD_PREP(UNI_DIR_BITS, (dir)) | \ FIELD_PREP(UNI_ROW_BITS, (row)) | \ FIELD_PREP(UNI_GLYPH_BITS, (glyph))) /** * struct uni_pagedict - unicode directory * * @uni_pgdir: 32*32*64 table with glyphs * @refcount: reference count of this structure * @sum: checksum * @inverse_translations: best-effort inverse mapping * @inverse_trans_unicode: best-effort inverse mapping to unicode */ struct uni_pagedict { u16 **uni_pgdir[UNI_DIRS]; unsigned long refcount; unsigned long sum; unsigned char *inverse_translations[LAST_MAP + 1]; u16 *inverse_trans_unicode; }; static struct uni_pagedict *dflt; static void set_inverse_transl(struct vc_data *conp, struct uni_pagedict *dict, enum translation_map m) { unsigned short *t = translations[m]; unsigned char *inv; if (!dict) return; inv = dict->inverse_translations[m]; if (!inv) { inv = dict->inverse_translations[m] = kmalloc(MAX_GLYPH, GFP_KERNEL); if (!inv) return; } memset(inv, 0, MAX_GLYPH); for (unsigned int ch = 0; ch < ARRAY_SIZE(translations[m]); ch++) { int glyph = conv_uni_to_pc(conp, t[ch]); if (glyph >= 0 && glyph < MAX_GLYPH && inv[glyph] < 32) { /* prefer '-' above SHY etc. */ inv[glyph] = ch; } } } static void set_inverse_trans_unicode(struct uni_pagedict *dict) { unsigned int d, r, g; u16 *inv; if (!dict) return; inv = dict->inverse_trans_unicode; if (!inv) { inv = dict->inverse_trans_unicode = kmalloc_array(MAX_GLYPH, sizeof(*inv), GFP_KERNEL); if (!inv) return; } memset(inv, 0, MAX_GLYPH * sizeof(*inv)); for (d = 0; d < UNI_DIRS; d++) { u16 **dir = dict->uni_pgdir[d]; if (!dir) continue; for (r = 0; r < UNI_DIR_ROWS; r++) { u16 *row = dir[r]; if (!row) continue; for (g = 0; g < UNI_ROW_GLYPHS; g++) { u16 glyph = row[g]; if (glyph < MAX_GLYPH && inv[glyph] < 32) inv[glyph] = UNI(d, r, g); } } } } unsigned short *set_translate(enum translation_map m, struct vc_data *vc) { inv_translate[vc->vc_num] = m; return translations[m]; } /* * Inverse translation is impossible for several reasons: * 1. The font<->character maps are not 1-1. * 2. The text may have been written while a different translation map * was active. * Still, it is now possible to a certain extent to cut and paste non-ASCII. */ u16 inverse_translate(const struct vc_data *conp, u16 glyph, bool use_unicode) { struct uni_pagedict *p; enum translation_map m; if (glyph >= MAX_GLYPH) return 0; p = *conp->uni_pagedict_loc; if (!p) return glyph; if (use_unicode) { if (!p->inverse_trans_unicode) return glyph; return p->inverse_trans_unicode[glyph]; } m = inv_translate[conp->vc_num]; if (!p->inverse_translations[m]) return glyph; return p->inverse_translations[m][glyph]; } EXPORT_SYMBOL_GPL(inverse_translate); static void update_user_maps(void) { int i; struct uni_pagedict *p, *q = NULL; for (i = 0; i < MAX_NR_CONSOLES; i++) { if (!vc_cons_allocated(i)) continue; p = *vc_cons[i].d->uni_pagedict_loc; if (p && p != q) { set_inverse_transl(vc_cons[i].d, p, USER_MAP); set_inverse_trans_unicode(p); q = p; } } } /* * Load customizable translation table * arg points to a 256 byte translation table. * * The "old" variants are for translation directly to font (using the * 0xf000-0xf0ff "transparent" Unicodes) whereas the "new" variants set * Unicodes explicitly. */ int con_set_trans_old(unsigned char __user * arg) { unsigned short inbuf[E_TABSZ]; unsigned int i; unsigned char ch; for (i = 0; i < ARRAY_SIZE(inbuf); i++) { if (get_user(ch, &arg[i])) return -EFAULT; inbuf[i] = UNI_DIRECT_BASE | ch; } console_lock(); memcpy(translations[USER_MAP], inbuf, sizeof(inbuf)); update_user_maps(); console_unlock(); return 0; } int con_get_trans_old(unsigned char __user * arg) { int i, ch; unsigned short *p = translations[USER_MAP]; unsigned char outbuf[E_TABSZ]; console_lock(); for (i = 0; i < ARRAY_SIZE(outbuf); i++) { ch = conv_uni_to_pc(vc_cons[fg_console].d, p[i]); outbuf[i] = (ch & ~0xff) ? 0 : ch; } console_unlock(); return copy_to_user(arg, outbuf, sizeof(outbuf)) ? -EFAULT : 0; } int con_set_trans_new(ushort __user * arg) { unsigned short inbuf[E_TABSZ]; if (copy_from_user(inbuf, arg, sizeof(inbuf))) return -EFAULT; console_lock(); memcpy(translations[USER_MAP], inbuf, sizeof(inbuf)); update_user_maps(); console_unlock(); return 0; } int con_get_trans_new(ushort __user * arg) { unsigned short outbuf[E_TABSZ]; console_lock(); memcpy(outbuf, translations[USER_MAP], sizeof(outbuf)); console_unlock(); return copy_to_user(arg, outbuf, sizeof(outbuf)) ? -EFAULT : 0; } /* * Unicode -> current font conversion * * A font has at most 512 chars, usually 256. * But one font position may represent several Unicode chars. * A hashtable is somewhat of a pain to deal with, so use a * "paged table" instead. Simulation has shown the memory cost of * this 3-level paged table scheme to be comparable to a hash table. */ extern u8 dfont_unicount[]; /* Defined in console_defmap.c */ extern u16 dfont_unitable[]; static void con_release_unimap(struct uni_pagedict *dict) { unsigned int d, r; if (dict == dflt) dflt = NULL; for (d = 0; d < UNI_DIRS; d++) { u16 **dir = dict->uni_pgdir[d]; if (dir != NULL) { for (r = 0; r < UNI_DIR_ROWS; r++) kfree(dir[r]); kfree(dir); } dict->uni_pgdir[d] = NULL; } for (r = 0; r < ARRAY_SIZE(dict->inverse_translations); r++) { kfree(dict->inverse_translations[r]); dict->inverse_translations[r] = NULL; } kfree(dict->inverse_trans_unicode); dict->inverse_trans_unicode = NULL; } /* Caller must hold the console lock */ void con_free_unimap(struct vc_data *vc) { struct uni_pagedict *p; p = *vc->uni_pagedict_loc; if (!p) return; *vc->uni_pagedict_loc = NULL; if (--p->refcount) return; con_release_unimap(p); kfree(p); } static int con_unify_unimap(struct vc_data *conp, struct uni_pagedict *dict1) { struct uni_pagedict *dict2; unsigned int cons, d, r; for (cons = 0; cons < MAX_NR_CONSOLES; cons++) { if (!vc_cons_allocated(cons)) continue; dict2 = *vc_cons[cons].d->uni_pagedict_loc; if (!dict2 || dict2 == dict1 || dict2->sum != dict1->sum) continue; for (d = 0; d < UNI_DIRS; d++) { u16 **dir1 = dict1->uni_pgdir[d]; u16 **dir2 = dict2->uni_pgdir[d]; if (!dir1 && !dir2) continue; if (!dir1 || !dir2) break; for (r = 0; r < UNI_DIR_ROWS; r++) { if (!dir1[r] && !dir2[r]) continue; if (!dir1[r] || !dir2[r]) break; if (memcmp(dir1[r], dir2[r], UNI_ROW_GLYPHS * sizeof(*dir1[r]))) break; } if (r < UNI_DIR_ROWS) break; } if (d == UNI_DIRS) { dict2->refcount++; *conp->uni_pagedict_loc = dict2; con_release_unimap(dict1); kfree(dict1); return 1; } } return 0; } static int con_insert_unipair(struct uni_pagedict *p, u_short unicode, u_short fontpos) { u16 **dir, *row; unsigned int n; n = UNI_DIR(unicode); dir = p->uni_pgdir[n]; if (!dir) { dir = p->uni_pgdir[n] = kcalloc(UNI_DIR_ROWS, sizeof(*dir), GFP_KERNEL); if (!dir) return -ENOMEM; } n = UNI_ROW(unicode); row = dir[n]; if (!row) { row = dir[n] = kmalloc_array(UNI_ROW_GLYPHS, sizeof(*row), GFP_KERNEL); if (!row) return -ENOMEM; /* No glyphs for the characters (yet) */ memset(row, 0xff, UNI_ROW_GLYPHS * sizeof(*row)); } row[UNI_GLYPH(unicode)] = fontpos; p->sum += (fontpos << 20U) + unicode; return 0; } static int con_allocate_new(struct vc_data *vc) { struct uni_pagedict *new, *old = *vc->uni_pagedict_loc; new = kzalloc(sizeof(*new), GFP_KERNEL); if (!new) return -ENOMEM; new->refcount = 1; *vc->uni_pagedict_loc = new; if (old) old->refcount--; return 0; } /* Caller must hold the lock */ static int con_do_clear_unimap(struct vc_data *vc) { struct uni_pagedict *old = *vc->uni_pagedict_loc; if (!old || old->refcount > 1) return con_allocate_new(vc); old->sum = 0; con_release_unimap(old); return 0; } int con_clear_unimap(struct vc_data *vc) { int ret; console_lock(); ret = con_do_clear_unimap(vc); console_unlock(); return ret; } static struct uni_pagedict *con_unshare_unimap(struct vc_data *vc, struct uni_pagedict *old) { struct uni_pagedict *new; unsigned int d, r, g; int ret; u16 uni = 0; ret = con_allocate_new(vc); if (ret) return ERR_PTR(ret); new = *vc->uni_pagedict_loc; /* * uni_pgdir is a 32*32*64 table with rows allocated when its first * entry is added. The unicode value must still be incremented for * empty rows. We are copying entries from "old" to "new". */ for (d = 0; d < UNI_DIRS; d++) { u16 **dir = old->uni_pgdir[d]; if (!dir) { /* Account for empty table */ uni += UNI_DIR_ROWS * UNI_ROW_GLYPHS; continue; } for (r = 0; r < UNI_DIR_ROWS; r++) { u16 *row = dir[r]; if (!row) { /* Account for row of 64 empty entries */ uni += UNI_ROW_GLYPHS; continue; } for (g = 0; g < UNI_ROW_GLYPHS; g++, uni++) { if (row[g] == 0xffff) continue; /* * Found one, copy entry for unicode uni with * fontpos value row[g]. */ ret = con_insert_unipair(new, uni, row[g]); if (ret) { old->refcount++; *vc->uni_pagedict_loc = old; con_release_unimap(new); kfree(new); return ERR_PTR(ret); } } } } return new; } int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) { int err = 0, err1; struct uni_pagedict *dict; struct unipair *unilist, *plist; if (!ct) return 0; unilist = vmemdup_array_user(list, ct, sizeof(*unilist)); if (IS_ERR(unilist)) return PTR_ERR(unilist); console_lock(); /* Save original vc_unipagdir_loc in case we allocate a new one */ dict = *vc->uni_pagedict_loc; if (!dict) { err = -EINVAL; goto out_unlock; } if (dict->refcount > 1) { dict = con_unshare_unimap(vc, dict); if (IS_ERR(dict)) { err = PTR_ERR(dict); goto out_unlock; } } else if (dict == dflt) { dflt = NULL; } /* * Insert user specified unicode pairs into new table. */ for (plist = unilist; ct; ct--, plist++) { err1 = con_insert_unipair(dict, plist->unicode, plist->fontpos); if (err1) err = err1; } /* * Merge with fontmaps of any other virtual consoles. */ if (con_unify_unimap(vc, dict)) goto out_unlock; for (enum translation_map m = FIRST_MAP; m <= LAST_MAP; m++) set_inverse_transl(vc, dict, m); set_inverse_trans_unicode(dict); out_unlock: console_unlock(); kvfree(unilist); return err; } /** * con_set_default_unimap - set default unicode map * @vc: the console we are updating * * Loads the unimap for the hardware font, as defined in uni_hash.tbl. * The representation used was the most compact I could come up * with. This routine is executed at video setup, and when the * PIO_FONTRESET ioctl is called. * * The caller must hold the console lock */ int con_set_default_unimap(struct vc_data *vc) { struct uni_pagedict *dict; unsigned int fontpos, count; int err = 0, err1; u16 *dfont; if (dflt) { dict = *vc->uni_pagedict_loc; if (dict == dflt) return 0; dflt->refcount++; *vc->uni_pagedict_loc = dflt; if (dict && !--dict->refcount) { con_release_unimap(dict); kfree(dict); } return 0; } /* The default font is always 256 characters */ err = con_do_clear_unimap(vc); if (err) return err; dict = *vc->uni_pagedict_loc; dfont = dfont_unitable; for (fontpos = 0; fontpos < 256U; fontpos++) for (count = dfont_unicount[fontpos]; count; count--) { err1 = con_insert_unipair(dict, *(dfont++), fontpos); if (err1) err = err1; } if (con_unify_unimap(vc, dict)) { dflt = *vc->uni_pagedict_loc; return err; } for (enum translation_map m = FIRST_MAP; m <= LAST_MAP; m++) set_inverse_transl(vc, dict, m); set_inverse_trans_unicode(dict); dflt = dict; return err; } EXPORT_SYMBOL(con_set_default_unimap); /** * con_copy_unimap - copy unimap between two vts * @dst_vc: target * @src_vc: source * * The caller must hold the console lock when invoking this method */ int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc) { struct uni_pagedict *src; if (!*src_vc->uni_pagedict_loc) return -EINVAL; if (*dst_vc->uni_pagedict_loc == *src_vc->uni_pagedict_loc) return 0; con_free_unimap(dst_vc); src = *src_vc->uni_pagedict_loc; src->refcount++; *dst_vc->uni_pagedict_loc = src; return 0; } EXPORT_SYMBOL(con_copy_unimap); /* * con_get_unimap - get the unicode map * * Read the console unicode data for this console. Called from the ioctl * handlers. */ int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list) { ushort ect; struct uni_pagedict *dict; struct unipair *unilist; unsigned int d, r, g; int ret = 0; unilist = kvmalloc_array(ct, sizeof(*unilist), GFP_KERNEL); if (!unilist) return -ENOMEM; console_lock(); ect = 0; dict = *vc->uni_pagedict_loc; if (!dict) goto unlock; for (d = 0; d < UNI_DIRS; d++) { u16 **dir = dict->uni_pgdir[d]; if (!dir) continue; for (r = 0; r < UNI_DIR_ROWS; r++) { u16 *row = dir[r]; if (!row) continue; for (g = 0; g < UNI_ROW_GLYPHS; g++, row++) { if (*row >= MAX_GLYPH) continue; if (ect < ct) { unilist[ect].unicode = UNI(d, r, g); unilist[ect].fontpos = *row; } ect++; } } } unlock: console_unlock(); if (copy_to_user(list, unilist, min(ect, ct) * sizeof(*unilist))) ret = -EFAULT; if (put_user(ect, uct)) ret = -EFAULT; kvfree(unilist); return ret ? ret : (ect <= ct) ? 0 : -ENOMEM; } /* * Always use USER_MAP. These functions are used by the keyboard, * which shouldn't be affected by G0/G1 switching, etc. * If the user map still contains default values, i.e. the * direct-to-font mapping, then assume user is using Latin1. * * FIXME: at some point we need to decide if we want to lock the table * update element itself via the keyboard_event_lock for consistency with the * keyboard driver as well as the consoles */ /* may be called during an interrupt */ u32 conv_8bit_to_uni(unsigned char c) { unsigned short uni = translations[USER_MAP][c]; return uni == (0xf000 | c) ? c : uni; } int conv_uni_to_8bit(u32 uni) { int c; for (c = 0; c < ARRAY_SIZE(translations[USER_MAP]); c++) if (translations[USER_MAP][c] == uni || (translations[USER_MAP][c] == (c | 0xf000) && uni == c)) return c; return -1; } int conv_uni_to_pc(struct vc_data *conp, long ucs) { struct uni_pagedict *dict; u16 **dir, *row, glyph; /* Only 16-bit codes supported at this time */ if (ucs > 0xffff) return -4; /* Not found */ else if (ucs < 0x20) return -1; /* Not a printable character */ else if (ucs == 0xfeff || (ucs >= 0x200b && ucs <= 0x200f)) return -2; /* Zero-width space */ /* * UNI_DIRECT_BASE indicates the start of the region in the User Zone * which always has a 1:1 mapping to the currently loaded font. The * UNI_DIRECT_MASK indicates the bit span of the region. */ else if ((ucs & ~UNI_DIRECT_MASK) == UNI_DIRECT_BASE) return ucs & UNI_DIRECT_MASK; dict = *conp->uni_pagedict_loc; if (!dict) return -3; dir = dict->uni_pgdir[UNI_DIR(ucs)]; if (!dir) return -4; row = dir[UNI_ROW(ucs)]; if (!row) return -4; glyph = row[UNI_GLYPH(ucs)]; if (glyph >= MAX_GLYPH) return -4; return glyph; } /* * This is called at sys_setup time, after memory and the console are * initialized. It must be possible to call kmalloc(..., GFP_KERNEL) * from this function, hence the call from sys_setup. */ void __init console_map_init(void) { int i; for (i = 0; i < MAX_NR_CONSOLES; i++) if (vc_cons_allocated(i) && !*vc_cons[i].d->uni_pagedict_loc) con_set_default_unimap(vc_cons[i].d); } |
| 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * GeneSys GL620USB-A based links * Copyright (C) 2001 by Jiun-Jie Huang <huangjj@genesyslogic.com.tw> * Copyright (C) 2001 by Stanislav Brabec <utx@penguin.cz> */ // #define DEBUG // error path messages, extra info // #define VERBOSE // more; success messages #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/workqueue.h> #include <linux/mii.h> #include <linux/usb.h> #include <linux/usb/usbnet.h> #include <linux/gfp.h> /* * GeneSys GL620USB-A (www.genesyslogic.com.tw) * * ... should partially interop with the Win32 driver for this hardware. * The GeneSys docs imply there's some NDIS issue motivating this framing. * * Some info from GeneSys: * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk. * (Some cables, like the BAFO-100c, use the half duplex version.) * - For the full duplex model, the low bit of the version code says * which side is which ("left/right"). * - For the half duplex type, a control/interrupt handshake settles * the transfer direction. (That's disabled here, partially coded.) * A control URB would block until other side writes an interrupt. * * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw> * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>. */ // control msg write command #define GENELINK_CONNECT_WRITE 0xF0 // interrupt pipe index #define GENELINK_INTERRUPT_PIPE 0x03 // interrupt read buffer size #define INTERRUPT_BUFSIZE 0x08 // interrupt pipe interval value #define GENELINK_INTERRUPT_INTERVAL 0x10 // max transmit packet number per transmit #define GL_MAX_TRANSMIT_PACKETS 32 // max packet length #define GL_MAX_PACKET_LEN 1514 // max receive buffer size #define GL_RCV_BUF_SIZE \ (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4) struct gl_packet { __le32 packet_length; char packet_data[]; }; struct gl_header { __le32 packet_count; struct gl_packet packets; }; static int genelink_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { struct gl_header *header; struct gl_packet *packet; struct sk_buff *gl_skb; u32 size; u32 count; /* This check is no longer done by usbnet */ if (skb->len < dev->net->hard_header_len) return 0; header = (struct gl_header *) skb->data; // get the packet count of the received skb count = le32_to_cpu(header->packet_count); if (count > GL_MAX_TRANSMIT_PACKETS) { netdev_dbg(dev->net, "genelink: invalid received packet count %u\n", count); return 0; } // set the current packet pointer to the first packet packet = &header->packets; // decrement the length for the packet count size 4 bytes skb_pull(skb, 4); while (count > 1) { // get the packet length size = le32_to_cpu(packet->packet_length); // this may be a broken packet if (size > GL_MAX_PACKET_LEN) { netdev_dbg(dev->net, "genelink: invalid rx length %d\n", size); return 0; } // allocate the skb for the individual packet gl_skb = alloc_skb(size, GFP_ATOMIC); if (gl_skb) { // copy the packet data to the new skb skb_put_data(gl_skb, packet->packet_data, size); usbnet_skb_return(dev, gl_skb); } // advance to the next packet packet = (struct gl_packet *)&packet->packet_data[size]; count--; // shift the data pointer to the next gl_packet skb_pull(skb, size + 4); } // skip the packet length field 4 bytes skb_pull(skb, 4); if (skb->len > GL_MAX_PACKET_LEN) { netdev_dbg(dev->net, "genelink: invalid rx length %d\n", skb->len); return 0; } return 1; } static struct sk_buff * genelink_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { int padlen; int length = skb->len; int headroom = skb_headroom(skb); int tailroom = skb_tailroom(skb); __le32 *packet_count; __le32 *packet_len; // FIXME: magic numbers, bleech padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1; if ((!skb_cloned(skb)) && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) { if ((headroom < (4 + 4*1)) || (tailroom < padlen)) { skb->data = memmove(skb->head + (4 + 4*1), skb->data, skb->len); skb_set_tail_pointer(skb, skb->len); } } else { struct sk_buff *skb2; skb2 = skb_copy_expand(skb, (4 + 4*1) , padlen, flags); dev_kfree_skb_any(skb); skb = skb2; if (!skb) return NULL; } // attach the packet count to the header packet_count = skb_push(skb, (4 + 4 * 1)); packet_len = packet_count + 1; *packet_count = cpu_to_le32(1); *packet_len = cpu_to_le32(length); // add padding byte if ((skb->len % dev->maxpacket) == 0) skb_put(skb, 1); return skb; } static int genelink_bind(struct usbnet *dev, struct usb_interface *intf) { dev->hard_mtu = GL_RCV_BUF_SIZE; dev->net->hard_header_len += 4; return usbnet_get_endpoints(dev, intf); } static const struct driver_info genelink_info = { .description = "Genesys GeneLink", .flags = FLAG_POINTTOPOINT | FLAG_FRAMING_GL | FLAG_NO_SETINT, .bind = genelink_bind, .rx_fixup = genelink_rx_fixup, .tx_fixup = genelink_tx_fixup, .in = 1, .out = 2, #ifdef GENELINK_ACK .check_connect =genelink_check_connect, #endif }; static const struct usb_device_id products [] = { { USB_DEVICE(0x05e3, 0x0502), // GL620USB-A .driver_info = (unsigned long) &genelink_info, }, /* NOT: USB_DEVICE(0x05e3, 0x0501), // GL620USB * that's half duplex, not currently supported */ { }, // END }; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver gl620a_driver = { .name = "gl620a", .id_table = products, .probe = usbnet_probe, .disconnect = usbnet_disconnect, .suspend = usbnet_suspend, .resume = usbnet_resume, .disable_hub_initiated_lpm = 1, }; module_usb_driver(gl620a_driver); MODULE_AUTHOR("Jiun-Jie Huang"); MODULE_DESCRIPTION("GL620-USB-A Host-to-Host Link cables"); MODULE_LICENSE("GPL"); |
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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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * sonix sn9c102 (bayer) library * * Copyright (C) 2009-2011 Jean-François Moine <http://moinejf.free.fr> * Copyright (C) 2003 2004 Michel Xhaard mxhaard@magic.fr * Add Pas106 Stefano Mozzi (C) 2004 */ /* Some documentation on known sonixb registers: Reg Use sn9c101 / sn9c102: 0x10 high nibble red gain low nibble blue gain 0x11 low nibble green gain sn9c103: 0x05 red gain 0-127 0x06 blue gain 0-127 0x07 green gain 0-127 all: 0x08-0x0f i2c / 3wire registers 0x12 hstart 0x13 vstart 0x15 hsize (hsize = register-value * 16) 0x16 vsize (vsize = register-value * 16) 0x17 bit 0 toggle compression quality (according to sn9c102 driver) 0x18 bit 7 enables compression, bit 4-5 set image down scaling: 00 scale 1, 01 scale 1/2, 10, scale 1/4 0x19 high-nibble is sensor clock divider, changes exposure on sensors which use a clock generated by the bridge. Some sensors have their own clock. 0x1c auto_exposure area (for avg_lum) startx (startx = register-value * 32) 0x1d auto_exposure area (for avg_lum) starty (starty = register-value * 32) 0x1e auto_exposure area (for avg_lum) stopx (hsize = (0x1e - 0x1c) * 32) 0x1f auto_exposure area (for avg_lum) stopy (vsize = (0x1f - 0x1d) * 32) */ #define MODULE_NAME "sonixb" #include <linux/input.h> #include "gspca.h" MODULE_AUTHOR("Jean-François Moine <http://moinejf.free.fr>"); MODULE_DESCRIPTION("GSPCA/SN9C102 USB Camera Driver"); MODULE_LICENSE("GPL"); /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ struct v4l2_ctrl *brightness; struct v4l2_ctrl *plfreq; atomic_t avg_lum; int prev_avg_lum; int exposure_knee; int header_read; u8 header[12]; /* Header without sof marker */ unsigned char autogain_ignore_frames; unsigned char frames_to_drop; __u8 bridge; /* Type of bridge */ #define BRIDGE_101 0 #define BRIDGE_102 0 /* We make no difference between 101 and 102 */ #define BRIDGE_103 1 __u8 sensor; /* Type of image sensor chip */ #define SENSOR_HV7131D 0 #define SENSOR_HV7131R 1 #define SENSOR_OV6650 2 #define SENSOR_OV7630 3 #define SENSOR_PAS106 4 #define SENSOR_PAS202 5 #define SENSOR_TAS5110C 6 #define SENSOR_TAS5110D 7 #define SENSOR_TAS5130CXX 8 __u8 reg11; }; typedef const __u8 sensor_init_t[8]; struct sensor_data { const __u8 *bridge_init; sensor_init_t *sensor_init; int sensor_init_size; int flags; __u8 sensor_addr; }; /* sensor_data flags */ #define F_SIF 0x01 /* sif or vga */ /* priv field of struct v4l2_pix_format flags (do not use low nibble!) */ #define MODE_RAW 0x10 /* raw bayer mode */ #define MODE_REDUCED_SIF 0x20 /* vga mode (320x240 / 160x120) on sif cam */ #define COMP 0xc7 /* 0x87 //0x07 */ #define COMP1 0xc9 /* 0x89 //0x09 */ #define MCK_INIT 0x63 #define MCK_INIT1 0x20 /*fixme: Bayer - 0x50 for JPEG ??*/ #define SYS_CLK 0x04 #define SENS(bridge, sensor, _flags, _sensor_addr) \ { \ .bridge_init = bridge, \ .sensor_init = sensor, \ .sensor_init_size = sizeof(sensor), \ .flags = _flags, .sensor_addr = _sensor_addr \ } /* We calculate the autogain at the end of the transfer of a frame, at this moment a frame with the old settings is being captured and transmitted. So if we adjust the gain or exposure we must ignore at least the next frame for the new settings to come into effect before doing any other adjustments. */ #define AUTOGAIN_IGNORE_FRAMES 1 static const struct v4l2_pix_format vga_mode[] = { {160, 120, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2 | MODE_RAW}, {160, 120, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120 * 5 / 4, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {320, 240, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 5 / 4, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {640, 480, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480 * 5 / 4, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; static const struct v4l2_pix_format sif_mode[] = { {160, 120, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1 | MODE_RAW | MODE_REDUCED_SIF}, {160, 120, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120 * 5 / 4, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1 | MODE_REDUCED_SIF}, {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1 | MODE_RAW}, {176, 144, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144 * 5 / 4, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {320, 240, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 5 / 4, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0 | MODE_REDUCED_SIF}, {352, 288, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 5 / 4, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; static const __u8 initHv7131d[] = { 0x04, 0x03, 0x00, 0x04, 0x00, 0x00, 0x00, 0x80, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x00, 0x28, 0x1e, 0x60, 0x8e, 0x42, }; static const __u8 hv7131d_sensor_init[][8] = { {0xa0, 0x11, 0x01, 0x04, 0x00, 0x00, 0x00, 0x17}, {0xa0, 0x11, 0x02, 0x00, 0x00, 0x00, 0x00, 0x17}, {0xa0, 0x11, 0x28, 0x00, 0x00, 0x00, 0x00, 0x17}, {0xa0, 0x11, 0x30, 0x30, 0x00, 0x00, 0x00, 0x17}, /* reset level */ {0xa0, 0x11, 0x34, 0x02, 0x00, 0x00, 0x00, 0x17}, /* pixel bias volt */ }; static const __u8 initHv7131r[] = { 0x46, 0x77, 0x00, 0x04, 0x00, 0x00, 0x00, 0x80, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x01, 0x00, 0x28, 0x1e, 0x60, 0x8a, 0x20, }; static const __u8 hv7131r_sensor_init[][8] = { {0xc0, 0x11, 0x31, 0x38, 0x2a, 0x2e, 0x00, 0x10}, {0xa0, 0x11, 0x01, 0x08, 0x2a, 0x2e, 0x00, 0x10}, {0xb0, 0x11, 0x20, 0x00, 0xd0, 0x2e, 0x00, 0x10}, {0xc0, 0x11, 0x25, 0x03, 0x0e, 0x28, 0x00, 0x16}, {0xa0, 0x11, 0x30, 0x10, 0x0e, 0x28, 0x00, 0x15}, }; static const __u8 initOv6650[] = { 0x44, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x0a, 0x16, 0x12, 0x68, 0x8b, 0x10, }; static const __u8 ov6650_sensor_init[][8] = { /* Bright, contrast, etc are set through SCBB interface. * AVCAP on win2 do not send any data on this controls. */ /* Anyway, some registers appears to alter bright and constrat */ /* Reset sensor */ {0xa0, 0x60, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10}, /* Set clock register 0x11 low nibble is clock divider */ {0xd0, 0x60, 0x11, 0xc0, 0x1b, 0x18, 0xc1, 0x10}, /* Next some unknown stuff */ {0xb0, 0x60, 0x15, 0x00, 0x02, 0x18, 0xc1, 0x10}, /* {0xa0, 0x60, 0x1b, 0x01, 0x02, 0x18, 0xc1, 0x10}, * THIS SET GREEN SCREEN * (pixels could be innverted in decode kind of "brg", * but blue wont be there. Avoid this data ... */ {0xd0, 0x60, 0x26, 0x01, 0x14, 0xd8, 0xa4, 0x10}, /* format out? */ {0xd0, 0x60, 0x26, 0x01, 0x14, 0xd8, 0xa4, 0x10}, {0xa0, 0x60, 0x30, 0x3d, 0x0a, 0xd8, 0xa4, 0x10}, /* Enable rgb brightness control */ {0xa0, 0x60, 0x61, 0x08, 0x00, 0x00, 0x00, 0x10}, /* HDG: Note windows uses the line below, which sets both register 0x60 and 0x61 I believe these registers of the ov6650 are identical as those of the ov7630, because if this is true the windows settings add a bit additional red gain and a lot additional blue gain, which matches my findings that the windows settings make blue much too blue and red a little too red. {0xb0, 0x60, 0x60, 0x66, 0x68, 0xd8, 0xa4, 0x10}, */ /* Some more unknown stuff */ {0xa0, 0x60, 0x68, 0x04, 0x68, 0xd8, 0xa4, 0x10}, {0xd0, 0x60, 0x17, 0x24, 0xd6, 0x04, 0x94, 0x10}, /* Clipreg */ }; static const __u8 initOv7630[] = { 0x04, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* r01 .. r08 */ 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* r09 .. r10 */ 0x00, 0x01, 0x01, 0x0a, /* r11 .. r14 */ 0x28, 0x1e, /* H & V sizes r15 .. r16 */ 0x68, 0x8f, MCK_INIT1, /* r17 .. r19 */ }; static const __u8 ov7630_sensor_init[][8] = { {0xa0, 0x21, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10}, {0xb0, 0x21, 0x01, 0x77, 0x3a, 0x00, 0x00, 0x10}, /* {0xd0, 0x21, 0x12, 0x7c, 0x01, 0x80, 0x34, 0x10}, jfm */ {0xd0, 0x21, 0x12, 0x5c, 0x00, 0x80, 0x34, 0x10}, /* jfm */ {0xa0, 0x21, 0x1b, 0x04, 0x00, 0x80, 0x34, 0x10}, {0xa0, 0x21, 0x20, 0x44, 0x00, 0x80, 0x34, 0x10}, {0xa0, 0x21, 0x23, 0xee, 0x00, 0x80, 0x34, 0x10}, {0xd0, 0x21, 0x26, 0xa0, 0x9a, 0xa0, 0x30, 0x10}, {0xb0, 0x21, 0x2a, 0x80, 0x00, 0xa0, 0x30, 0x10}, {0xb0, 0x21, 0x2f, 0x3d, 0x24, 0xa0, 0x30, 0x10}, {0xa0, 0x21, 0x32, 0x86, 0x24, 0xa0, 0x30, 0x10}, {0xb0, 0x21, 0x60, 0xa9, 0x4a, 0xa0, 0x30, 0x10}, /* {0xb0, 0x21, 0x60, 0xa9, 0x42, 0xa0, 0x30, 0x10}, * jfm */ {0xa0, 0x21, 0x65, 0x00, 0x42, 0xa0, 0x30, 0x10}, {0xa0, 0x21, 0x69, 0x38, 0x42, 0xa0, 0x30, 0x10}, {0xc0, 0x21, 0x6f, 0x88, 0x0b, 0x00, 0x30, 0x10}, {0xc0, 0x21, 0x74, 0x21, 0x8e, 0x00, 0x30, 0x10}, {0xa0, 0x21, 0x7d, 0xf7, 0x8e, 0x00, 0x30, 0x10}, {0xd0, 0x21, 0x17, 0x1c, 0xbd, 0x06, 0xf6, 0x10}, }; static const __u8 initPas106[] = { 0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x00, 0x16, 0x12, 0x24, COMP1, MCK_INIT1, }; /* compression 0x86 mckinit1 0x2b */ /* "Known" PAS106B registers: 0x02 clock divider 0x03 Variable framerate bits 4-11 0x04 Var framerate bits 0-3, one must leave the 4 msb's at 0 !! The variable framerate control must never be set lower then 300, which sets the framerate at 90 / reg02, otherwise vsync is lost. 0x05 Shutter Time Line Offset, this can be used as an exposure control: 0 = use full frame time, 255 = no exposure at all Note this may never be larger then "var-framerate control" / 2 - 2. When var-framerate control is < 514, no exposure is reached at the max allowed value for the framerate control value, rather then at 255. 0x06 Shutter Time Pixel Offset, like reg05 this influences exposure, but only a very little bit, leave at 0xcd 0x07 offset sign bit (bit0 1 > negative offset) 0x08 offset 0x09 Blue Gain 0x0a Green1 Gain 0x0b Green2 Gain 0x0c Red Gain 0x0e Global gain 0x13 Write 1 to commit settings to sensor */ static const __u8 pas106_sensor_init[][8] = { /* Pixel Clock Divider 6 */ { 0xa1, 0x40, 0x02, 0x04, 0x00, 0x00, 0x00, 0x14 }, /* Frame Time MSB (also seen as 0x12) */ { 0xa1, 0x40, 0x03, 0x13, 0x00, 0x00, 0x00, 0x14 }, /* Frame Time LSB (also seen as 0x05) */ { 0xa1, 0x40, 0x04, 0x06, 0x00, 0x00, 0x00, 0x14 }, /* Shutter Time Line Offset (also seen as 0x6d) */ { 0xa1, 0x40, 0x05, 0x65, 0x00, 0x00, 0x00, 0x14 }, /* Shutter Time Pixel Offset (also seen as 0xb1) */ { 0xa1, 0x40, 0x06, 0xcd, 0x00, 0x00, 0x00, 0x14 }, /* Black Level Subtract Sign (also seen 0x00) */ { 0xa1, 0x40, 0x07, 0xc1, 0x00, 0x00, 0x00, 0x14 }, /* Black Level Subtract Level (also seen 0x01) */ { 0xa1, 0x40, 0x08, 0x06, 0x00, 0x00, 0x00, 0x14 }, { 0xa1, 0x40, 0x08, 0x06, 0x00, 0x00, 0x00, 0x14 }, /* Color Gain B Pixel 5 a */ { 0xa1, 0x40, 0x09, 0x05, 0x00, 0x00, 0x00, 0x14 }, /* Color Gain G1 Pixel 1 5 */ { 0xa1, 0x40, 0x0a, 0x04, 0x00, 0x00, 0x00, 0x14 }, /* Color Gain G2 Pixel 1 0 5 */ { 0xa1, 0x40, 0x0b, 0x04, 0x00, 0x00, 0x00, 0x14 }, /* Color Gain R Pixel 3 1 */ { 0xa1, 0x40, 0x0c, 0x05, 0x00, 0x00, 0x00, 0x14 }, /* Color GainH Pixel */ { 0xa1, 0x40, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x14 }, /* Global Gain */ { 0xa1, 0x40, 0x0e, 0x0e, 0x00, 0x00, 0x00, 0x14 }, /* Contrast */ { 0xa1, 0x40, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x14 }, /* H&V synchro polarity */ { 0xa1, 0x40, 0x10, 0x06, 0x00, 0x00, 0x00, 0x14 }, /* ?default */ { 0xa1, 0x40, 0x11, 0x06, 0x00, 0x00, 0x00, 0x14 }, /* DAC scale */ { 0xa1, 0x40, 0x12, 0x06, 0x00, 0x00, 0x00, 0x14 }, /* ?default */ { 0xa1, 0x40, 0x14, 0x02, 0x00, 0x00, 0x00, 0x14 }, /* Validate Settings */ { 0xa1, 0x40, 0x13, 0x01, 0x00, 0x00, 0x00, 0x14 }, }; static const __u8 initPas202[] = { 0x44, 0x44, 0x21, 0x30, 0x00, 0x00, 0x00, 0x80, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x03, 0x0a, 0x28, 0x1e, 0x20, 0x89, 0x20, }; /* "Known" PAS202BCB registers: 0x02 clock divider 0x04 Variable framerate bits 6-11 (*) 0x05 Var framerate bits 0-5, one must leave the 2 msb's at 0 !! 0x07 Blue Gain 0x08 Green Gain 0x09 Red Gain 0x0b offset sign bit (bit0 1 > negative offset) 0x0c offset 0x0e Unknown image is slightly brighter when bit 0 is 0, if reg0f is 0 too, leave at 1 otherwise we get a jump in our exposure control 0x0f Exposure 0-255, 0 = use full frame time, 255 = no exposure at all 0x10 Master gain 0 - 31 0x11 write 1 to apply changes (*) The variable framerate control must never be set lower then 500 which sets the framerate at 30 / reg02, otherwise vsync is lost. */ static const __u8 pas202_sensor_init[][8] = { /* Set the clock divider to 4 -> 30 / 4 = 7.5 fps, we would like to set it lower, but for some reason the bridge starts missing vsync's then */ {0xa0, 0x40, 0x02, 0x04, 0x00, 0x00, 0x00, 0x10}, {0xd0, 0x40, 0x04, 0x07, 0x34, 0x00, 0x09, 0x10}, {0xd0, 0x40, 0x08, 0x01, 0x00, 0x00, 0x01, 0x10}, {0xd0, 0x40, 0x0c, 0x00, 0x0c, 0x01, 0x32, 0x10}, {0xd0, 0x40, 0x10, 0x00, 0x01, 0x00, 0x63, 0x10}, {0xa0, 0x40, 0x15, 0x70, 0x01, 0x00, 0x63, 0x10}, {0xa0, 0x40, 0x18, 0x00, 0x01, 0x00, 0x63, 0x10}, {0xa0, 0x40, 0x11, 0x01, 0x01, 0x00, 0x63, 0x10}, {0xa0, 0x40, 0x03, 0x56, 0x01, 0x00, 0x63, 0x10}, {0xa0, 0x40, 0x11, 0x01, 0x01, 0x00, 0x63, 0x10}, }; static const __u8 initTas5110c[] = { 0x44, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x45, 0x09, 0x0a, 0x16, 0x12, 0x60, 0x86, 0x2b, }; /* Same as above, except a different hstart */ static const __u8 initTas5110d[] = { 0x44, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x41, 0x09, 0x0a, 0x16, 0x12, 0x60, 0x86, 0x2b, }; /* tas5110c is 3 wire, tas5110d is 2 wire (regular i2c) */ static const __u8 tas5110c_sensor_init[][8] = { {0x30, 0x11, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x10}, {0x30, 0x11, 0x02, 0x20, 0xa9, 0x00, 0x00, 0x10}, }; /* Known TAS5110D registers * reg02: gain, bit order reversed!! 0 == max gain, 255 == min gain * reg03: bit3: vflip, bit4: ~hflip, bit7: ~gainboost (~ == inverted) * Note: writing reg03 seems to only work when written together with 02 */ static const __u8 tas5110d_sensor_init[][8] = { {0xa0, 0x61, 0x9a, 0xca, 0x00, 0x00, 0x00, 0x17}, /* reset */ }; static const __u8 initTas5130[] = { 0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x68, 0x0c, 0x0a, 0x28, 0x1e, 0x60, COMP, MCK_INIT, }; static const __u8 tas5130_sensor_init[][8] = { /* {0x30, 0x11, 0x00, 0x40, 0x47, 0x00, 0x00, 0x10}, * shutter 0x47 short exposure? */ {0x30, 0x11, 0x00, 0x40, 0x01, 0x00, 0x00, 0x10}, /* shutter 0x01 long exposure */ {0x30, 0x11, 0x02, 0x20, 0x70, 0x00, 0x00, 0x10}, }; static const struct sensor_data sensor_data[] = { SENS(initHv7131d, hv7131d_sensor_init, 0, 0), SENS(initHv7131r, hv7131r_sensor_init, 0, 0), SENS(initOv6650, ov6650_sensor_init, F_SIF, 0x60), SENS(initOv7630, ov7630_sensor_init, 0, 0x21), SENS(initPas106, pas106_sensor_init, F_SIF, 0), SENS(initPas202, pas202_sensor_init, 0, 0), SENS(initTas5110c, tas5110c_sensor_init, F_SIF, 0), SENS(initTas5110d, tas5110d_sensor_init, F_SIF, 0), SENS(initTas5130, tas5130_sensor_init, 0, 0), }; /* get one byte in gspca_dev->usb_buf */ static void reg_r(struct gspca_dev *gspca_dev, __u16 value) { int res; if (gspca_dev->usb_err < 0) return; res = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, value, 0, /* index */ gspca_dev->usb_buf, 1, 500); if (res < 0) { dev_err(gspca_dev->v4l2_dev.dev, "Error reading register %02x: %d\n", value, res); gspca_dev->usb_err = res; /* * Make sure the result is zeroed to avoid uninitialized * values. */ gspca_dev->usb_buf[0] = 0; } } static void reg_w(struct gspca_dev *gspca_dev, __u16 value, const __u8 *buffer, int len) { int res; if (gspca_dev->usb_err < 0) return; memcpy(gspca_dev->usb_buf, buffer, len); res = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 0x08, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, value, 0, /* index */ gspca_dev->usb_buf, len, 500); if (res < 0) { dev_err(gspca_dev->v4l2_dev.dev, "Error writing register %02x: %d\n", value, res); gspca_dev->usb_err = res; } } static void i2c_w(struct gspca_dev *gspca_dev, const u8 *buf) { int retry = 60; if (gspca_dev->usb_err < 0) return; /* is i2c ready */ reg_w(gspca_dev, 0x08, buf, 8); while (retry--) { if (gspca_dev->usb_err < 0) return; msleep(1); reg_r(gspca_dev, 0x08); if (gspca_dev->usb_buf[0] & 0x04) { if (gspca_dev->usb_buf[0] & 0x08) { dev_err(gspca_dev->v4l2_dev.dev, "i2c error writing %8ph\n", buf); gspca_dev->usb_err = -EIO; } return; } } dev_err(gspca_dev->v4l2_dev.dev, "i2c write timeout\n"); gspca_dev->usb_err = -EIO; } static void i2c_w_vector(struct gspca_dev *gspca_dev, const __u8 buffer[][8], int len) { for (;;) { if (gspca_dev->usb_err < 0) return; i2c_w(gspca_dev, *buffer); len -= 8; if (len <= 0) break; buffer++; } } static void setbrightness(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; switch (sd->sensor) { case SENSOR_OV6650: case SENSOR_OV7630: { __u8 i2cOV[] = {0xa0, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x10}; /* change reg 0x06 */ i2cOV[1] = sensor_data[sd->sensor].sensor_addr; i2cOV[3] = sd->brightness->val; i2c_w(gspca_dev, i2cOV); break; } case SENSOR_PAS106: case SENSOR_PAS202: { __u8 i2cpbright[] = {0xb0, 0x40, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x16}; __u8 i2cpdoit[] = {0xa0, 0x40, 0x11, 0x01, 0x00, 0x00, 0x00, 0x16}; /* PAS106 uses reg 7 and 8 instead of b and c */ if (sd->sensor == SENSOR_PAS106) { i2cpbright[2] = 7; i2cpdoit[2] = 0x13; } if (sd->brightness->val < 127) { /* change reg 0x0b, signreg */ i2cpbright[3] = 0x01; /* set reg 0x0c, offset */ i2cpbright[4] = 127 - sd->brightness->val; } else i2cpbright[4] = sd->brightness->val - 127; i2c_w(gspca_dev, i2cpbright); i2c_w(gspca_dev, i2cpdoit); break; } default: break; } } static void setgain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; u8 gain = gspca_dev->gain->val; switch (sd->sensor) { case SENSOR_HV7131D: { __u8 i2c[] = {0xc0, 0x11, 0x31, 0x00, 0x00, 0x00, 0x00, 0x17}; i2c[3] = 0x3f - gain; i2c[4] = 0x3f - gain; i2c[5] = 0x3f - gain; i2c_w(gspca_dev, i2c); break; } case SENSOR_TAS5110C: case SENSOR_TAS5130CXX: { __u8 i2c[] = {0x30, 0x11, 0x02, 0x20, 0x70, 0x00, 0x00, 0x10}; i2c[4] = 255 - gain; i2c_w(gspca_dev, i2c); break; } case SENSOR_TAS5110D: { __u8 i2c[] = { 0xb0, 0x61, 0x02, 0x00, 0x10, 0x00, 0x00, 0x17 }; gain = 255 - gain; /* The bits in the register are the wrong way around!! */ i2c[3] |= (gain & 0x80) >> 7; i2c[3] |= (gain & 0x40) >> 5; i2c[3] |= (gain & 0x20) >> 3; i2c[3] |= (gain & 0x10) >> 1; i2c[3] |= (gain & 0x08) << 1; i2c[3] |= (gain & 0x04) << 3; i2c[3] |= (gain & 0x02) << 5; i2c[3] |= (gain & 0x01) << 7; i2c_w(gspca_dev, i2c); break; } case SENSOR_OV6650: case SENSOR_OV7630: { __u8 i2c[] = {0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10}; /* * The ov7630's gain is weird, at 32 the gain drops to the * same level as at 16, so skip 32-47 (of the 0-63 scale). */ if (sd->sensor == SENSOR_OV7630 && gain >= 32) gain += 16; i2c[1] = sensor_data[sd->sensor].sensor_addr; i2c[3] = gain; i2c_w(gspca_dev, i2c); break; } case SENSOR_PAS106: case SENSOR_PAS202: { __u8 i2cpgain[] = {0xa0, 0x40, 0x10, 0x00, 0x00, 0x00, 0x00, 0x15}; __u8 i2cpcolorgain[] = {0xc0, 0x40, 0x07, 0x00, 0x00, 0x00, 0x00, 0x15}; __u8 i2cpdoit[] = {0xa0, 0x40, 0x11, 0x01, 0x00, 0x00, 0x00, 0x16}; /* PAS106 uses different regs (and has split green gains) */ if (sd->sensor == SENSOR_PAS106) { i2cpgain[2] = 0x0e; i2cpcolorgain[0] = 0xd0; i2cpcolorgain[2] = 0x09; i2cpdoit[2] = 0x13; } i2cpgain[3] = gain; i2cpcolorgain[3] = gain >> 1; i2cpcolorgain[4] = gain >> 1; i2cpcolorgain[5] = gain >> 1; i2cpcolorgain[6] = gain >> 1; i2c_w(gspca_dev, i2cpgain); i2c_w(gspca_dev, i2cpcolorgain); i2c_w(gspca_dev, i2cpdoit); break; } default: if (sd->bridge == BRIDGE_103) { u8 buf[3] = { gain, gain, gain }; /* R, G, B */ reg_w(gspca_dev, 0x05, buf, 3); } else { u8 buf[2]; buf[0] = gain << 4 | gain; /* Red and blue */ buf[1] = gain; /* Green */ reg_w(gspca_dev, 0x10, buf, 2); } } } static void setexposure(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; switch (sd->sensor) { case SENSOR_HV7131D: { /* Note the datasheet wrongly says line mode exposure uses reg 0x26 and 0x27, testing has shown 0x25 + 0x26 */ __u8 i2c[] = {0xc0, 0x11, 0x25, 0x00, 0x00, 0x00, 0x00, 0x17}; u16 reg = gspca_dev->exposure->val; i2c[3] = reg >> 8; i2c[4] = reg & 0xff; i2c_w(gspca_dev, i2c); break; } case SENSOR_TAS5110C: case SENSOR_TAS5110D: { /* register 19's high nibble contains the sn9c10x clock divider The high nibble configures the no fps according to the formula: 60 / high_nibble. With a maximum of 30 fps */ u8 reg = gspca_dev->exposure->val; reg = (reg << 4) | 0x0b; reg_w(gspca_dev, 0x19, ®, 1); break; } case SENSOR_OV6650: case SENSOR_OV7630: { /* The ov6650 / ov7630 have 2 registers which both influence exposure, register 11, whose low nibble sets the nr off fps according to: fps = 30 / (low_nibble + 1) The fps configures the maximum exposure setting, but it is possible to use less exposure then what the fps maximum allows by setting register 10. register 10 configures the actual exposure as quotient of the full exposure, with 0 being no exposure at all (not very useful) and reg10_max being max exposure possible at that framerate. The code maps our 0 - 510 ms exposure ctrl to these 2 registers, trying to keep fps as high as possible. */ __u8 i2c[] = {0xb0, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10}; int reg10, reg11, reg10_max; /* ov6645 datasheet says reg10_max is 9a, but that uses tline * 2 * reg10 as formula for calculating texpo, the ov6650 probably uses the same formula as the 7730 which uses tline * 4 * reg10, which explains why the reg10max we've found experimentally for the ov6650 is exactly half that of the ov6645. The ov7630 datasheet says the max is 0x41. */ if (sd->sensor == SENSOR_OV6650) { reg10_max = 0x4d; i2c[4] = 0xc0; /* OV6650 needs non default vsync pol */ } else reg10_max = 0x41; reg11 = (15 * gspca_dev->exposure->val + 999) / 1000; if (reg11 < 1) reg11 = 1; else if (reg11 > 16) reg11 = 16; /* In 640x480, if the reg11 has less than 4, the image is unstable (the bridge goes into a higher compression mode which we have not reverse engineered yet). */ if (gspca_dev->pixfmt.width == 640 && reg11 < 4) reg11 = 4; /* frame exposure time in ms = 1000 * reg11 / 30 -> reg10 = (gspca_dev->exposure->val / 2) * reg10_max / (1000 * reg11 / 30) */ reg10 = (gspca_dev->exposure->val * 15 * reg10_max) / (1000 * reg11); /* Don't allow this to get below 10 when using autogain, the steps become very large (relatively) when below 10 causing the image to oscillate from much too dark, to much too bright and back again. */ if (gspca_dev->autogain->val && reg10 < 10) reg10 = 10; else if (reg10 > reg10_max) reg10 = reg10_max; /* Write reg 10 and reg11 low nibble */ i2c[1] = sensor_data[sd->sensor].sensor_addr; i2c[3] = reg10; i2c[4] |= reg11 - 1; /* If register 11 didn't change, don't change it */ if (sd->reg11 == reg11) i2c[0] = 0xa0; i2c_w(gspca_dev, i2c); if (gspca_dev->usb_err == 0) sd->reg11 = reg11; break; } case SENSOR_PAS202: { __u8 i2cpframerate[] = {0xb0, 0x40, 0x04, 0x00, 0x00, 0x00, 0x00, 0x16}; __u8 i2cpexpo[] = {0xa0, 0x40, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x16}; const __u8 i2cpdoit[] = {0xa0, 0x40, 0x11, 0x01, 0x00, 0x00, 0x00, 0x16}; int framerate_ctrl; /* The exposure knee for the autogain algorithm is 200 (100 ms / 10 fps on other sensors), for values below this use the control for setting the partial frame expose time, above that use variable framerate. This way we run at max framerate (640x480@7.5 fps, 320x240@10fps) until the knee is reached. Using the variable framerate control above 200 is better then playing around with both clockdiv + partial frame exposure times (like we are doing with the ov chips), as that sometimes leads to jumps in the exposure control, which are bad for auto exposure. */ if (gspca_dev->exposure->val < 200) { i2cpexpo[3] = 255 - (gspca_dev->exposure->val * 255) / 200; framerate_ctrl = 500; } else { /* The PAS202's exposure control goes from 0 - 4095, but anything below 500 causes vsync issues, so scale our 200-1023 to 500-4095 */ framerate_ctrl = (gspca_dev->exposure->val - 200) * 1000 / 229 + 500; } i2cpframerate[3] = framerate_ctrl >> 6; i2cpframerate[4] = framerate_ctrl & 0x3f; i2c_w(gspca_dev, i2cpframerate); i2c_w(gspca_dev, i2cpexpo); i2c_w(gspca_dev, i2cpdoit); break; } case SENSOR_PAS106: { __u8 i2cpframerate[] = {0xb1, 0x40, 0x03, 0x00, 0x00, 0x00, 0x00, 0x14}; __u8 i2cpexpo[] = {0xa1, 0x40, 0x05, 0x00, 0x00, 0x00, 0x00, 0x14}; const __u8 i2cpdoit[] = {0xa1, 0x40, 0x13, 0x01, 0x00, 0x00, 0x00, 0x14}; int framerate_ctrl; /* For values below 150 use partial frame exposure, above that use framerate ctrl */ if (gspca_dev->exposure->val < 150) { i2cpexpo[3] = 150 - gspca_dev->exposure->val; framerate_ctrl = 300; } else { /* The PAS106's exposure control goes from 0 - 4095, but anything below 300 causes vsync issues, so scale our 150-1023 to 300-4095 */ framerate_ctrl = (gspca_dev->exposure->val - 150) * 1000 / 230 + 300; } i2cpframerate[3] = framerate_ctrl >> 4; i2cpframerate[4] = framerate_ctrl & 0x0f; i2c_w(gspca_dev, i2cpframerate); i2c_w(gspca_dev, i2cpexpo); i2c_w(gspca_dev, i2cpdoit); break; } default: break; } } static void setfreq(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (sd->sensor == SENSOR_OV6650 || sd->sensor == SENSOR_OV7630) { /* Framerate adjust register for artificial light 50 hz flicker compensation, for the ov6650 this is identical to ov6630 0x2b register, see ov6630 datasheet. 0x4f / 0x8a -> (30 fps -> 25 fps), 0x00 -> no adjustment */ __u8 i2c[] = {0xa0, 0x00, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10}; switch (sd->plfreq->val) { default: /* case 0: * no filter*/ /* case 2: * 60 hz */ i2c[3] = 0; break; case 1: /* 50 hz */ i2c[3] = (sd->sensor == SENSOR_OV6650) ? 0x4f : 0x8a; break; } i2c[1] = sensor_data[sd->sensor].sensor_addr; i2c_w(gspca_dev, i2c); } } static void do_autogain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int deadzone, desired_avg_lum, avg_lum; avg_lum = atomic_read(&sd->avg_lum); if (avg_lum == -1) return; if (sd->autogain_ignore_frames > 0) { sd->autogain_ignore_frames--; return; } /* SIF / VGA sensors have a different autoexposure area and thus different avg_lum values for the same picture brightness */ if (sensor_data[sd->sensor].flags & F_SIF) { deadzone = 500; /* SIF sensors tend to overexpose, so keep this small */ desired_avg_lum = 5000; } else { deadzone = 1500; desired_avg_lum = 13000; } if (sd->brightness) desired_avg_lum = sd->brightness->val * desired_avg_lum / 127; if (gspca_dev->exposure->maximum < 500) { if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum, desired_avg_lum, deadzone)) sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES; } else { int gain_knee = (s32)gspca_dev->gain->maximum * 9 / 10; if (gspca_expo_autogain(gspca_dev, avg_lum, desired_avg_lum, deadzone, gain_knee, sd->exposure_knee)) sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES; } } /* 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; reg_r(gspca_dev, 0x00); if (gspca_dev->usb_buf[0] != 0x10) return -ENODEV; /* copy the webcam info from the device id */ sd->sensor = id->driver_info >> 8; sd->bridge = id->driver_info & 0xff; cam = &gspca_dev->cam; if (!(sensor_data[sd->sensor].flags & F_SIF)) { cam->cam_mode = vga_mode; cam->nmodes = ARRAY_SIZE(vga_mode); } else { cam->cam_mode = sif_mode; cam->nmodes = ARRAY_SIZE(sif_mode); } cam->npkt = 36; /* 36 packets per ISOC message */ return 0; } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { const __u8 stop = 0x09; /* Disable stream turn of LED */ reg_w(gspca_dev, 0x01, &stop, 1); return gspca_dev->usb_err; } 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 (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) { /* when switching to autogain set defaults to make sure we are on a valid point of the autogain gain / exposure knee graph, and give this change time to take effect before doing autogain. */ gspca_dev->gain->val = gspca_dev->gain->default_value; gspca_dev->exposure->val = gspca_dev->exposure->default_value; sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES; } if (!gspca_dev->streaming) return 0; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: setbrightness(gspca_dev); break; case V4L2_CID_AUTOGAIN: if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val)) setexposure(gspca_dev); if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val)) setgain(gspca_dev); break; case V4L2_CID_POWER_LINE_FREQUENCY: setfreq(gspca_dev); break; default: return -EINVAL; } return gspca_dev->usb_err; } static const struct v4l2_ctrl_ops sd_ctrl_ops = { .s_ctrl = sd_s_ctrl, }; /* this function is called at probe time */ 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; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 5); if (sd->sensor == SENSOR_OV6650 || sd->sensor == SENSOR_OV7630 || sd->sensor == SENSOR_PAS106 || sd->sensor == SENSOR_PAS202) sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 255, 1, 127); /* Gain range is sensor dependent */ switch (sd->sensor) { case SENSOR_OV6650: case SENSOR_PAS106: case SENSOR_PAS202: gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 31, 1, 15); break; case SENSOR_OV7630: gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 47, 1, 31); break; case SENSOR_HV7131D: gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 63, 1, 31); break; case SENSOR_TAS5110C: case SENSOR_TAS5110D: case SENSOR_TAS5130CXX: gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 255, 1, 127); break; default: if (sd->bridge == BRIDGE_103) { gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 127, 1, 63); } else { gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 15, 1, 7); } } /* Exposure range is sensor dependent, and not all have exposure */ switch (sd->sensor) { case SENSOR_HV7131D: gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_EXPOSURE, 0, 8191, 1, 482); sd->exposure_knee = 964; break; case SENSOR_OV6650: case SENSOR_OV7630: case SENSOR_PAS106: case SENSOR_PAS202: gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_EXPOSURE, 0, 1023, 1, 66); sd->exposure_knee = 200; break; case SENSOR_TAS5110C: case SENSOR_TAS5110D: gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_EXPOSURE, 2, 15, 1, 2); break; } if (gspca_dev->exposure) { gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); } if (sd->sensor == SENSOR_OV6650 || sd->sensor == SENSOR_OV7630) sd->plfreq = 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_DISABLED); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } if (gspca_dev->autogain) v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false); return 0; } /* -- start the camera -- */ static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam = &gspca_dev->cam; int i, mode; __u8 regs[0x31]; mode = cam->cam_mode[gspca_dev->curr_mode].priv & 0x07; /* Copy registers 0x01 - 0x19 from the template */ memcpy(®s[0x01], sensor_data[sd->sensor].bridge_init, 0x19); /* Set the mode */ regs[0x18] |= mode << 4; /* Set bridge gain to 1.0 */ if (sd->bridge == BRIDGE_103) { regs[0x05] = 0x20; /* Red */ regs[0x06] = 0x20; /* Green */ regs[0x07] = 0x20; /* Blue */ } else { regs[0x10] = 0x00; /* Red and blue */ regs[0x11] = 0x00; /* Green */ } /* Setup pixel numbers and auto exposure window */ if (sensor_data[sd->sensor].flags & F_SIF) { regs[0x1a] = 0x14; /* HO_SIZE 640, makes no sense */ regs[0x1b] = 0x0a; /* VO_SIZE 320, makes no sense */ regs[0x1c] = 0x02; /* AE H-start 64 */ regs[0x1d] = 0x02; /* AE V-start 64 */ regs[0x1e] = 0x09; /* AE H-end 288 */ regs[0x1f] = 0x07; /* AE V-end 224 */ } else { regs[0x1a] = 0x1d; /* HO_SIZE 960, makes no sense */ regs[0x1b] = 0x10; /* VO_SIZE 512, makes no sense */ regs[0x1c] = 0x05; /* AE H-start 160 */ regs[0x1d] = 0x03; /* AE V-start 96 */ regs[0x1e] = 0x0f; /* AE H-end 480 */ regs[0x1f] = 0x0c; /* AE V-end 384 */ } /* Setup the gamma table (only used with the sn9c103 bridge) */ for (i = 0; i < 16; i++) regs[0x20 + i] = i * 16; regs[0x20 + i] = 255; /* Special cases where some regs depend on mode or bridge */ switch (sd->sensor) { case SENSOR_TAS5130CXX: /* FIXME / TESTME probably not mode specific at all most likely the upper nibble of 0x19 is exposure (clock divider) just as with the tas5110, we need someone to test this. */ regs[0x19] = mode ? 0x23 : 0x43; break; case SENSOR_OV7630: /* FIXME / TESTME for some reason with the 101/102 bridge the clock is set to 12 Mhz (reg1 == 0x04), rather then 24. Also the hstart needs to go from 1 to 2 when using a 103, which is likely related. This does not seem right. */ if (sd->bridge == BRIDGE_103) { regs[0x01] = 0x44; /* Select 24 Mhz clock */ regs[0x12] = 0x02; /* Set hstart to 2 */ } break; case SENSOR_PAS202: /* For some unknown reason we need to increase hstart by 1 on the sn9c103, otherwise we get wrong colors (bayer shift). */ if (sd->bridge == BRIDGE_103) regs[0x12] += 1; break; } /* Disable compression when the raw bayer format has been selected */ if (cam->cam_mode[gspca_dev->curr_mode].priv & MODE_RAW) regs[0x18] &= ~0x80; /* Vga mode emulation on SIF sensor? */ if (cam->cam_mode[gspca_dev->curr_mode].priv & MODE_REDUCED_SIF) { regs[0x12] += 16; /* hstart adjust */ regs[0x13] += 24; /* vstart adjust */ regs[0x15] = 320 / 16; /* hsize */ regs[0x16] = 240 / 16; /* vsize */ } /* reg 0x01 bit 2 video transfert on */ reg_w(gspca_dev, 0x01, ®s[0x01], 1); /* reg 0x17 SensorClk enable inv Clk 0x60 */ reg_w(gspca_dev, 0x17, ®s[0x17], 1); /* Set the registers from the template */ reg_w(gspca_dev, 0x01, ®s[0x01], (sd->bridge == BRIDGE_103) ? 0x30 : 0x1f); /* Init the sensor */ i2c_w_vector(gspca_dev, sensor_data[sd->sensor].sensor_init, sensor_data[sd->sensor].sensor_init_size); /* Mode / bridge specific sensor setup */ switch (sd->sensor) { case SENSOR_PAS202: { const __u8 i2cpclockdiv[] = {0xa0, 0x40, 0x02, 0x03, 0x00, 0x00, 0x00, 0x10}; /* clockdiv from 4 to 3 (7.5 -> 10 fps) when in low res mode */ if (mode) i2c_w(gspca_dev, i2cpclockdiv); break; } case SENSOR_OV7630: /* FIXME / TESTME We should be able to handle this identical for the 101/102 and the 103 case */ if (sd->bridge == BRIDGE_103) { const __u8 i2c[] = { 0xa0, 0x21, 0x13, 0x80, 0x00, 0x00, 0x00, 0x10 }; i2c_w(gspca_dev, i2c); } break; } /* H_size V_size 0x28, 0x1e -> 640x480. 0x16, 0x12 -> 352x288 */ reg_w(gspca_dev, 0x15, ®s[0x15], 2); /* compression register */ reg_w(gspca_dev, 0x18, ®s[0x18], 1); /* H_start */ reg_w(gspca_dev, 0x12, ®s[0x12], 1); /* V_START */ reg_w(gspca_dev, 0x13, ®s[0x13], 1); /* reset 0x17 SensorClk enable inv Clk 0x60 */ /*fixme: ov7630 [17]=68 8f (+20 if 102)*/ reg_w(gspca_dev, 0x17, ®s[0x17], 1); /*MCKSIZE ->3 */ /*fixme: not ov7630*/ reg_w(gspca_dev, 0x19, ®s[0x19], 1); /* AE_STRX AE_STRY AE_ENDX AE_ENDY */ reg_w(gspca_dev, 0x1c, ®s[0x1c], 4); /* Enable video transfert */ reg_w(gspca_dev, 0x01, ®s[0x01], 1); /* Compression */ reg_w(gspca_dev, 0x18, ®s[0x18], 2); msleep(20); sd->reg11 = -1; setgain(gspca_dev); setbrightness(gspca_dev); setexposure(gspca_dev); setfreq(gspca_dev); sd->frames_to_drop = 0; sd->autogain_ignore_frames = 0; gspca_dev->exp_too_high_cnt = 0; gspca_dev->exp_too_low_cnt = 0; atomic_set(&sd->avg_lum, -1); return gspca_dev->usb_err; } static void sd_stopN(struct gspca_dev *gspca_dev) { sd_init(gspca_dev); } static u8* find_sof(struct gspca_dev *gspca_dev, u8 *data, int len) { struct sd *sd = (struct sd *) gspca_dev; int i, header_size = (sd->bridge == BRIDGE_103) ? 18 : 12; /* frames start with: * ff ff 00 c4 c4 96 synchro * 00 (unknown) * xx (frame sequence / size / compression) * (xx) (idem - extra byte for sn9c103) * ll mm brightness sum inside auto exposure * ll mm brightness sum outside auto exposure * (xx xx xx xx xx) audio values for snc103 */ for (i = 0; i < len; i++) { switch (sd->header_read) { case 0: if (data[i] == 0xff) sd->header_read++; break; case 1: if (data[i] == 0xff) sd->header_read++; else sd->header_read = 0; break; case 2: if (data[i] == 0x00) sd->header_read++; else if (data[i] != 0xff) sd->header_read = 0; break; case 3: if (data[i] == 0xc4) sd->header_read++; else if (data[i] == 0xff) sd->header_read = 1; else sd->header_read = 0; break; case 4: if (data[i] == 0xc4) sd->header_read++; else if (data[i] == 0xff) sd->header_read = 1; else sd->header_read = 0; break; case 5: if (data[i] == 0x96) sd->header_read++; else if (data[i] == 0xff) sd->header_read = 1; else sd->header_read = 0; break; default: sd->header[sd->header_read - 6] = data[i]; sd->header_read++; if (sd->header_read == header_size) { sd->header_read = 0; return data + i + 1; } } } return NULL; } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { int fr_h_sz = 0, lum_offset = 0, len_after_sof = 0; struct sd *sd = (struct sd *) gspca_dev; struct cam *cam = &gspca_dev->cam; u8 *sof; sof = find_sof(gspca_dev, data, len); if (sof) { if (sd->bridge == BRIDGE_103) { fr_h_sz = 18; lum_offset = 3; } else { fr_h_sz = 12; lum_offset = 2; } len_after_sof = len - (sof - data); len = (sof - data) - fr_h_sz; if (len < 0) len = 0; } if (cam->cam_mode[gspca_dev->curr_mode].priv & MODE_RAW) { /* In raw mode we sometimes get some garbage after the frame ignore this */ int used; int size = cam->cam_mode[gspca_dev->curr_mode].sizeimage; used = gspca_dev->image_len; if (used + len > size) len = size - used; } gspca_frame_add(gspca_dev, INTER_PACKET, data, len); if (sof) { int lum = sd->header[lum_offset] + (sd->header[lum_offset + 1] << 8); /* When exposure changes midway a frame we get a lum of 0 in this case drop 2 frames as the frames directly after an exposure change have an unstable image. Sometimes lum *really* is 0 (cam used in low light with low exposure setting), so do not drop frames if the previous lum was 0 too. */ if (lum == 0 && sd->prev_avg_lum != 0) { lum = -1; sd->frames_to_drop = 2; sd->prev_avg_lum = 0; } else sd->prev_avg_lum = lum; atomic_set(&sd->avg_lum, lum); if (sd->frames_to_drop) sd->frames_to_drop--; else gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); gspca_frame_add(gspca_dev, FIRST_PACKET, sof, len_after_sof); } } #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] == 1) { 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); ret = 0; } return ret; } #endif /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = sd_config, .init = sd_init, .init_controls = sd_init_controls, .start = sd_start, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan, .dq_callback = do_autogain, #if IS_ENABLED(CONFIG_INPUT) .int_pkt_scan = sd_int_pkt_scan, #endif }; /* -- module initialisation -- */ #define SB(sensor, bridge) \ .driver_info = (SENSOR_ ## sensor << 8) | BRIDGE_ ## bridge static const struct usb_device_id device_table[] = { {USB_DEVICE(0x0c45, 0x6001), SB(TAS5110C, 102)}, /* TAS5110C1B */ {USB_DEVICE(0x0c45, 0x6005), SB(TAS5110C, 101)}, /* TAS5110C1B */ {USB_DEVICE(0x0c45, 0x6007), SB(TAS5110D, 101)}, /* TAS5110D */ {USB_DEVICE(0x0c45, 0x6009), SB(PAS106, 101)}, {USB_DEVICE(0x0c45, 0x600d), SB(PAS106, 101)}, {USB_DEVICE(0x0c45, 0x6011), SB(OV6650, 101)}, {USB_DEVICE(0x0c45, 0x6019), SB(OV7630, 101)}, {USB_DEVICE(0x0c45, 0x6024), SB(TAS5130CXX, 102)}, {USB_DEVICE(0x0c45, 0x6025), SB(TAS5130CXX, 102)}, {USB_DEVICE(0x0c45, 0x6027), SB(OV7630, 101)}, /* Genius Eye 310 */ {USB_DEVICE(0x0c45, 0x6028), SB(PAS202, 102)}, {USB_DEVICE(0x0c45, 0x6029), SB(PAS106, 102)}, {USB_DEVICE(0x0c45, 0x602a), SB(HV7131D, 102)}, /* {USB_DEVICE(0x0c45, 0x602b), SB(MI0343, 102)}, */ {USB_DEVICE(0x0c45, 0x602c), SB(OV7630, 102)}, {USB_DEVICE(0x0c45, 0x602d), SB(HV7131R, 102)}, {USB_DEVICE(0x0c45, 0x602e), SB(OV7630, 102)}, /* {USB_DEVICE(0x0c45, 0x6030), SB(MI03XX, 102)}, */ /* MI0343 MI0360 MI0330 */ /* {USB_DEVICE(0x0c45, 0x6082), SB(MI03XX, 103)}, */ /* MI0343 MI0360 */ {USB_DEVICE(0x0c45, 0x6083), SB(HV7131D, 103)}, {USB_DEVICE(0x0c45, 0x608c), SB(HV7131R, 103)}, /* {USB_DEVICE(0x0c45, 0x608e), SB(CISVF10, 103)}, */ {USB_DEVICE(0x0c45, 0x608f), SB(OV7630, 103)}, {USB_DEVICE(0x0c45, 0x60a8), SB(PAS106, 103)}, {USB_DEVICE(0x0c45, 0x60aa), SB(TAS5130CXX, 103)}, {USB_DEVICE(0x0c45, 0x60af), SB(PAS202, 103)}, {USB_DEVICE(0x0c45, 0x60b0), SB(OV7630, 103)}, {} }; 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); |
| 11 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 | /* * Copyright (c) 2016 Intel Corporation * * 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. */ #ifndef __DRM_PROPERTY_H__ #define __DRM_PROPERTY_H__ #include <linux/list.h> #include <linux/ctype.h> #include <drm/drm_mode_object.h> #include <uapi/drm/drm_mode.h> /** * struct drm_property_enum - symbolic values for enumerations * @head: list of enum values, linked to &drm_property.enum_list * @name: symbolic name for the enum * * For enumeration and bitmask properties this structure stores the symbolic * decoding for each value. This is used for example for the rotation property. */ struct drm_property_enum { /** * @value: numeric property value for this enum entry * * If the property has the type &DRM_MODE_PROP_BITMASK, @value stores a * bitshift, not a bitmask. In other words, the enum entry is enabled * if the bit number @value is set in the property's value. This enum * entry has the bitmask ``1 << value``. */ uint64_t value; struct list_head head; char name[DRM_PROP_NAME_LEN]; }; /** * struct drm_property - modeset object property * * This structure represent a modeset object property. It combines both the name * of the property with the set of permissible values. This means that when a * driver wants to use a property with the same name on different objects, but * with different value ranges, then it must create property for each one. An * example would be rotation of &drm_plane, when e.g. the primary plane cannot * be rotated. But if both the name and the value range match, then the same * property structure can be instantiated multiple times for the same object. * Userspace must be able to cope with this and cannot assume that the same * symbolic property will have the same modeset object ID on all modeset * objects. * * Properties are created by one of the special functions, as explained in * detail in the @flags structure member. * * To actually expose a property it must be attached to each object using * drm_object_attach_property(). Currently properties can only be attached to * &drm_connector, &drm_crtc and &drm_plane. * * Properties are also used as the generic metadatatransport for the atomic * IOCTL. Everything that was set directly in structures in the legacy modeset * IOCTLs (like the plane source or destination windows, or e.g. the links to * the CRTC) is exposed as a property with the DRM_MODE_PROP_ATOMIC flag set. */ struct drm_property { /** * @head: per-device list of properties, for cleanup. */ struct list_head head; /** * @base: base KMS object */ struct drm_mode_object base; /** * @flags: * * Property flags and type. A property needs to be one of the following * types: * * DRM_MODE_PROP_RANGE * Range properties report their minimum and maximum admissible unsigned values. * The KMS core verifies that values set by application fit in that * range. The range is unsigned. Range properties are created using * drm_property_create_range(). * * DRM_MODE_PROP_SIGNED_RANGE * Range properties report their minimum and maximum admissible unsigned values. * The KMS core verifies that values set by application fit in that * range. The range is signed. Range properties are created using * drm_property_create_signed_range(). * * DRM_MODE_PROP_ENUM * Enumerated properties take a numerical value that ranges from 0 to * the number of enumerated values defined by the property minus one, * and associate a free-formed string name to each value. Applications * can retrieve the list of defined value-name pairs and use the * numerical value to get and set property instance values. Enum * properties are created using drm_property_create_enum(). * * DRM_MODE_PROP_BITMASK * Bitmask properties are enumeration properties that additionally * restrict all enumerated values to the 0..63 range. Bitmask property * instance values combine one or more of the enumerated bits defined * by the property. Bitmask properties are created using * drm_property_create_bitmask(). * * DRM_MODE_PROP_OBJECT * Object properties are used to link modeset objects. This is used * extensively in the atomic support to create the display pipeline, * by linking &drm_framebuffer to &drm_plane, &drm_plane to * &drm_crtc and &drm_connector to &drm_crtc. An object property can * only link to a specific type of &drm_mode_object, this limit is * enforced by the core. Object properties are created using * drm_property_create_object(). * * Object properties work like blob properties, but in a more * general fashion. They are limited to atomic drivers and must have * the DRM_MODE_PROP_ATOMIC flag set. * * DRM_MODE_PROP_BLOB * Blob properties store a binary blob without any format restriction. * The binary blobs are created as KMS standalone objects, and blob * property instance values store the ID of their associated blob * object. Blob properties are created by calling * drm_property_create() with DRM_MODE_PROP_BLOB as the type. * * Actual blob objects to contain blob data are created using * drm_property_create_blob(), or through the corresponding IOCTL. * * Besides the built-in limit to only accept blob objects blob * properties work exactly like object properties. The only reasons * blob properties exist is backwards compatibility with existing * userspace. * * In addition a property can have any combination of the below flags: * * DRM_MODE_PROP_ATOMIC * Set for properties which encode atomic modeset state. Such * properties are not exposed to legacy userspace. * * DRM_MODE_PROP_IMMUTABLE * Set for properties whose values cannot be changed by * userspace. The kernel is allowed to update the value of these * properties. This is generally used to expose probe state to * userspace, e.g. the EDID, or the connector path property on DP * MST sinks. Kernel can update the value of an immutable property * by calling drm_object_property_set_value(). */ uint32_t flags; /** * @name: symbolic name of the properties */ char name[DRM_PROP_NAME_LEN]; /** * @num_values: size of the @values array. */ uint32_t num_values; /** * @values: * * Array with limits and values for the property. The * interpretation of these limits is dependent upon the type per @flags. */ uint64_t *values; /** * @dev: DRM device */ struct drm_device *dev; /** * @enum_list: * * List of &drm_prop_enum_list structures with the symbolic names for * enum and bitmask values. */ struct list_head enum_list; }; /** * struct drm_property_blob - Blob data for &drm_property * @base: base KMS object * @dev: DRM device * @head_global: entry on the global blob list in * &drm_mode_config.property_blob_list. * @head_file: entry on the per-file blob list in &drm_file.blobs list. * @length: size of the blob in bytes, invariant over the lifetime of the object * @data: actual data, embedded at the end of this structure * * Blobs are used to store bigger values than what fits directly into the 64 * bits available for a &drm_property. * * Blobs are reference counted using drm_property_blob_get() and * drm_property_blob_put(). They are created using drm_property_create_blob(). */ struct drm_property_blob { struct drm_mode_object base; struct drm_device *dev; struct list_head head_global; struct list_head head_file; size_t length; void *data; }; struct drm_prop_enum_list { int type; const char *name; }; #define obj_to_property(x) container_of(x, struct drm_property, base) #define obj_to_blob(x) container_of(x, struct drm_property_blob, base) /** * drm_property_type_is - check the type of a property * @property: property to check * @type: property type to compare with * * This is a helper function becauase the uapi encoding of property types is * a bit special for historical reasons. */ static inline bool drm_property_type_is(struct drm_property *property, uint32_t type) { /* instanceof for props.. handles extended type vs original types: */ if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type; return property->flags & type; } struct drm_property *drm_property_create(struct drm_device *dev, u32 flags, const char *name, int num_values); struct drm_property *drm_property_create_enum(struct drm_device *dev, u32 flags, const char *name, const struct drm_prop_enum_list *props, int num_values); struct drm_property *drm_property_create_bitmask(struct drm_device *dev, u32 flags, const char *name, const struct drm_prop_enum_list *props, int num_props, uint64_t supported_bits); struct drm_property *drm_property_create_range(struct drm_device *dev, u32 flags, const char *name, uint64_t min, uint64_t max); struct drm_property *drm_property_create_signed_range(struct drm_device *dev, u32 flags, const char *name, int64_t min, int64_t max); struct drm_property *drm_property_create_object(struct drm_device *dev, u32 flags, const char *name, uint32_t type); struct drm_property *drm_property_create_bool(struct drm_device *dev, u32 flags, const char *name); int drm_property_add_enum(struct drm_property *property, uint64_t value, const char *name); void drm_property_destroy(struct drm_device *dev, struct drm_property *property); struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, size_t length, const void *data); struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev, uint32_t id); int drm_property_replace_blob_from_id(struct drm_device *dev, struct drm_property_blob **blob, uint64_t blob_id, ssize_t expected_size, ssize_t expected_elem_size, bool *replaced); int drm_property_replace_global_blob(struct drm_device *dev, struct drm_property_blob **replace, size_t length, const void *data, struct drm_mode_object *obj_holds_id, struct drm_property *prop_holds_id); bool drm_property_replace_blob(struct drm_property_blob **blob, struct drm_property_blob *new_blob); struct drm_property_blob *drm_property_blob_get(struct drm_property_blob *blob); void drm_property_blob_put(struct drm_property_blob *blob); /** * drm_property_find - find property object * @dev: DRM device * @file_priv: drm file to check for lease against. * @id: property object id * * This function looks up the property object specified by id and returns it. */ static inline struct drm_property *drm_property_find(struct drm_device *dev, struct drm_file *file_priv, uint32_t id) { struct drm_mode_object *mo; mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_PROPERTY); return mo ? obj_to_property(mo) : NULL; } #endif |
| 1 1 1 2 2 2 2 2 2 2 2 1 1 1 1 1 1 2 2 2 6 6 6 6 6 6 5 6 4 6 3 3 3 3 1 1 2 2 2 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for NXP PN533 NFC Chip - USB transport layer * * Copyright (C) 2011 Instituto Nokia de Tecnologia * Copyright (C) 2012-2013 Tieto Poland */ #include <linux/device.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/usb.h> #include <linux/nfc.h> #include <linux/netdevice.h> #include <net/nfc/nfc.h> #include "pn533.h" #define VERSION "0.1" #define PN533_VENDOR_ID 0x4CC #define PN533_PRODUCT_ID 0x2533 #define SCM_VENDOR_ID 0x4E6 #define SCL3711_PRODUCT_ID 0x5591 #define SONY_VENDOR_ID 0x054c #define PASORI_PRODUCT_ID 0x02e1 #define ACS_VENDOR_ID 0x072f #define ACR122U_PRODUCT_ID 0x2200 static const struct usb_device_id pn533_usb_table[] = { { USB_DEVICE(PN533_VENDOR_ID, PN533_PRODUCT_ID), .driver_info = PN533_DEVICE_STD }, { USB_DEVICE(SCM_VENDOR_ID, SCL3711_PRODUCT_ID), .driver_info = PN533_DEVICE_STD }, { USB_DEVICE(SONY_VENDOR_ID, PASORI_PRODUCT_ID), .driver_info = PN533_DEVICE_PASORI }, { USB_DEVICE(ACS_VENDOR_ID, ACR122U_PRODUCT_ID), .driver_info = PN533_DEVICE_ACR122U }, { } }; MODULE_DEVICE_TABLE(usb, pn533_usb_table); struct pn533_usb_phy { struct usb_device *udev; struct usb_interface *interface; struct urb *out_urb; struct urb *in_urb; struct urb *ack_urb; u8 *ack_buffer; struct pn533 *priv; }; static void pn533_recv_response(struct urb *urb) { struct pn533_usb_phy *phy = urb->context; struct sk_buff *skb = NULL; if (!urb->status) { skb = alloc_skb(urb->actual_length, GFP_ATOMIC); if (!skb) { nfc_err(&phy->udev->dev, "failed to alloc memory\n"); } else { skb_put_data(skb, urb->transfer_buffer, urb->actual_length); } } pn533_recv_frame(phy->priv, skb, urb->status); } static int pn533_submit_urb_for_response(struct pn533_usb_phy *phy, gfp_t flags) { phy->in_urb->complete = pn533_recv_response; return usb_submit_urb(phy->in_urb, flags); } static void pn533_recv_ack(struct urb *urb) { struct pn533_usb_phy *phy = urb->context; struct pn533 *priv = phy->priv; struct pn533_cmd *cmd = priv->cmd; struct pn533_std_frame *in_frame; int rc; cmd->status = urb->status; switch (urb->status) { case 0: break; /* success */ case -ECONNRESET: case -ENOENT: dev_dbg(&phy->udev->dev, "The urb has been stopped (status %d)\n", urb->status); goto sched_wq; case -ESHUTDOWN: default: nfc_err(&phy->udev->dev, "Urb failure (status %d)\n", urb->status); goto sched_wq; } in_frame = phy->in_urb->transfer_buffer; if (!pn533_rx_frame_is_ack(in_frame)) { nfc_err(&phy->udev->dev, "Received an invalid ack\n"); cmd->status = -EIO; goto sched_wq; } rc = pn533_submit_urb_for_response(phy, GFP_ATOMIC); if (rc) { nfc_err(&phy->udev->dev, "usb_submit_urb failed with result %d\n", rc); cmd->status = rc; goto sched_wq; } return; sched_wq: queue_work(priv->wq, &priv->cmd_complete_work); } static int pn533_submit_urb_for_ack(struct pn533_usb_phy *phy, gfp_t flags) { phy->in_urb->complete = pn533_recv_ack; return usb_submit_urb(phy->in_urb, flags); } static int pn533_usb_send_ack(struct pn533 *dev, gfp_t flags) { struct pn533_usb_phy *phy = dev->phy; static const u8 ack[6] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00}; /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */ if (!phy->ack_buffer) { phy->ack_buffer = kmemdup(ack, sizeof(ack), flags); if (!phy->ack_buffer) return -ENOMEM; } phy->ack_urb->transfer_buffer = phy->ack_buffer; phy->ack_urb->transfer_buffer_length = sizeof(ack); return usb_submit_urb(phy->ack_urb, flags); } struct pn533_out_arg { struct pn533_usb_phy *phy; struct completion done; }; static int pn533_usb_send_frame(struct pn533 *dev, struct sk_buff *out) { struct pn533_usb_phy *phy = dev->phy; struct pn533_out_arg arg; void *cntx; int rc; if (phy->priv == NULL) phy->priv = dev; phy->out_urb->transfer_buffer = out->data; phy->out_urb->transfer_buffer_length = out->len; print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1, out->data, out->len, false); arg.phy = phy; init_completion(&arg.done); cntx = phy->out_urb->context; phy->out_urb->context = &arg; rc = usb_submit_urb(phy->out_urb, GFP_KERNEL); if (rc) return rc; wait_for_completion(&arg.done); phy->out_urb->context = cntx; if (dev->protocol_type == PN533_PROTO_REQ_RESP) { /* request for response for sent packet directly */ rc = pn533_submit_urb_for_response(phy, GFP_KERNEL); if (rc) goto error; } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) { /* request for ACK if that's the case */ rc = pn533_submit_urb_for_ack(phy, GFP_KERNEL); if (rc) goto error; } return 0; error: usb_unlink_urb(phy->out_urb); return rc; } static void pn533_usb_abort_cmd(struct pn533 *dev, gfp_t flags) { struct pn533_usb_phy *phy = dev->phy; /* ACR122U does not support any command which aborts last * issued command i.e. as ACK for standard PN533. Additionally, * it behaves stange, sending broken or incorrect responses, * when we cancel urb before the chip will send response. */ if (dev->device_type == PN533_DEVICE_ACR122U) return; /* An ack will cancel the last issued command */ pn533_usb_send_ack(dev, flags); /* cancel the urb request */ usb_kill_urb(phy->in_urb); } /* ACR122 specific structs and functions */ /* ACS ACR122 pn533 frame definitions */ #define PN533_ACR122_TX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_tx_frame) \ + 2) #define PN533_ACR122_TX_FRAME_TAIL_LEN 0 #define PN533_ACR122_RX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_rx_frame) \ + 2) #define PN533_ACR122_RX_FRAME_TAIL_LEN 2 #define PN533_ACR122_FRAME_MAX_PAYLOAD_LEN PN533_STD_FRAME_MAX_PAYLOAD_LEN /* CCID messages types */ #define PN533_ACR122_PC_TO_RDR_ICCPOWERON 0x62 #define PN533_ACR122_PC_TO_RDR_ESCAPE 0x6B #define PN533_ACR122_RDR_TO_PC_ESCAPE 0x83 struct pn533_acr122_ccid_hdr { u8 type; u32 datalen; u8 slot; u8 seq; /* * 3 msg specific bytes or status, error and 1 specific * byte for reposnse msg */ u8 params[3]; } __packed; struct pn533_acr122_apdu_hdr { u8 class; u8 ins; u8 p1; u8 p2; } __packed; struct pn533_acr122_tx_frame { struct pn533_acr122_ccid_hdr ccid; struct pn533_acr122_apdu_hdr apdu; u8 datalen; u8 data[]; /* pn533 frame: TFI ... */ } __packed; struct pn533_acr122_rx_frame { struct pn533_acr122_ccid_hdr ccid; u8 data[]; /* pn533 frame : TFI ... */ } __packed; static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code) { struct pn533_acr122_tx_frame *frame = _frame; frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE; /* sizeof(apdu_hdr) + sizeof(datalen) */ frame->ccid.datalen = sizeof(frame->apdu) + 1; frame->ccid.slot = 0; frame->ccid.seq = 0; frame->ccid.params[0] = 0; frame->ccid.params[1] = 0; frame->ccid.params[2] = 0; frame->data[0] = PN533_STD_FRAME_DIR_OUT; frame->data[1] = cmd_code; frame->datalen = 2; /* data[0] + data[1] */ frame->apdu.class = 0xFF; frame->apdu.ins = 0; frame->apdu.p1 = 0; frame->apdu.p2 = 0; } static void pn533_acr122_tx_frame_finish(void *_frame) { struct pn533_acr122_tx_frame *frame = _frame; frame->ccid.datalen += frame->datalen; } static void pn533_acr122_tx_update_payload_len(void *_frame, int len) { struct pn533_acr122_tx_frame *frame = _frame; frame->datalen += len; } static bool pn533_acr122_is_rx_frame_valid(void *_frame, struct pn533 *dev) { struct pn533_acr122_rx_frame *frame = _frame; if (frame->ccid.type != 0x83) return false; if (!frame->ccid.datalen) return false; if (frame->data[frame->ccid.datalen - 2] == 0x63) return false; return true; } static int pn533_acr122_rx_frame_size(void *frame) { struct pn533_acr122_rx_frame *f = frame; /* f->ccid.datalen already includes tail length */ return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen; } static u8 pn533_acr122_get_cmd_code(void *frame) { struct pn533_acr122_rx_frame *f = frame; return PN533_FRAME_CMD(f); } static struct pn533_frame_ops pn533_acr122_frame_ops = { .tx_frame_init = pn533_acr122_tx_frame_init, .tx_frame_finish = pn533_acr122_tx_frame_finish, .tx_update_payload_len = pn533_acr122_tx_update_payload_len, .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN, .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN, .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid, .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN, .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN, .rx_frame_size = pn533_acr122_rx_frame_size, .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN, .get_cmd_code = pn533_acr122_get_cmd_code, }; struct pn533_acr122_poweron_rdr_arg { int rc; struct completion done; }; static void pn533_acr122_poweron_rdr_resp(struct urb *urb) { struct pn533_acr122_poweron_rdr_arg *arg = urb->context; print_hex_dump_debug("ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1, urb->transfer_buffer, urb->transfer_buffer_length, false); arg->rc = urb->status; complete(&arg->done); } static int pn533_acr122_poweron_rdr(struct pn533_usb_phy *phy) { /* Power on th reader (CCID cmd) */ u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON, 0, 0, 0, 0, 0, 0, 3, 0, 0}; char *buffer; int transferred; int rc; void *cntx; struct pn533_acr122_poweron_rdr_arg arg; buffer = kmemdup(cmd, sizeof(cmd), GFP_KERNEL); if (!buffer) return -ENOMEM; init_completion(&arg.done); cntx = phy->in_urb->context; /* backup context */ phy->in_urb->complete = pn533_acr122_poweron_rdr_resp; phy->in_urb->context = &arg; print_hex_dump_debug("ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1, cmd, sizeof(cmd), false); rc = usb_bulk_msg(phy->udev, phy->out_urb->pipe, buffer, sizeof(cmd), &transferred, 5000); kfree(buffer); if (rc || (transferred != sizeof(cmd))) { nfc_err(&phy->udev->dev, "Reader power on cmd error %d\n", rc); return rc; } rc = usb_submit_urb(phy->in_urb, GFP_KERNEL); if (rc) { nfc_err(&phy->udev->dev, "Can't submit reader poweron cmd response %d\n", rc); return rc; } wait_for_completion(&arg.done); phy->in_urb->context = cntx; /* restore context */ return arg.rc; } static void pn533_out_complete(struct urb *urb) { struct pn533_out_arg *arg = urb->context; struct pn533_usb_phy *phy = arg->phy; switch (urb->status) { case 0: break; /* success */ case -ECONNRESET: case -ENOENT: dev_dbg(&phy->udev->dev, "The urb has been stopped (status %d)\n", urb->status); break; case -ESHUTDOWN: default: nfc_err(&phy->udev->dev, "Urb failure (status %d)\n", urb->status); } complete(&arg->done); } static void pn533_ack_complete(struct urb *urb) { struct pn533_usb_phy *phy = urb->context; switch (urb->status) { case 0: break; /* success */ case -ECONNRESET: case -ENOENT: dev_dbg(&phy->udev->dev, "The urb has been stopped (status %d)\n", urb->status); break; case -ESHUTDOWN: default: nfc_err(&phy->udev->dev, "Urb failure (status %d)\n", urb->status); } } static const struct pn533_phy_ops usb_phy_ops = { .send_frame = pn533_usb_send_frame, .send_ack = pn533_usb_send_ack, .abort_cmd = pn533_usb_abort_cmd, }; static int pn533_usb_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct pn533 *priv; struct pn533_usb_phy *phy; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; int in_endpoint = 0; int out_endpoint = 0; int rc = -ENOMEM; int i; u32 protocols; enum pn533_protocol_type protocol_type = PN533_PROTO_REQ_ACK_RESP; struct pn533_frame_ops *fops = NULL; unsigned char *in_buf; int in_buf_len = PN533_EXT_FRAME_HEADER_LEN + PN533_STD_FRAME_MAX_PAYLOAD_LEN + PN533_STD_FRAME_TAIL_LEN; phy = devm_kzalloc(&interface->dev, sizeof(*phy), GFP_KERNEL); if (!phy) return -ENOMEM; in_buf = kzalloc(in_buf_len, GFP_KERNEL); if (!in_buf) return -ENOMEM; phy->udev = usb_get_dev(interface_to_usbdev(interface)); phy->interface = interface; iface_desc = interface->cur_altsetting; for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { endpoint = &iface_desc->endpoint[i].desc; if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) in_endpoint = endpoint->bEndpointAddress; if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) out_endpoint = endpoint->bEndpointAddress; } if (!in_endpoint || !out_endpoint) { nfc_err(&interface->dev, "Could not find bulk-in or bulk-out endpoint\n"); rc = -ENODEV; goto error; } phy->in_urb = usb_alloc_urb(0, GFP_KERNEL); phy->out_urb = usb_alloc_urb(0, GFP_KERNEL); phy->ack_urb = usb_alloc_urb(0, GFP_KERNEL); if (!phy->in_urb || !phy->out_urb || !phy->ack_urb) goto error; usb_fill_bulk_urb(phy->in_urb, phy->udev, usb_rcvbulkpipe(phy->udev, in_endpoint), in_buf, in_buf_len, NULL, phy); usb_fill_bulk_urb(phy->out_urb, phy->udev, usb_sndbulkpipe(phy->udev, out_endpoint), NULL, 0, pn533_out_complete, phy); usb_fill_bulk_urb(phy->ack_urb, phy->udev, usb_sndbulkpipe(phy->udev, out_endpoint), NULL, 0, pn533_ack_complete, phy); switch (id->driver_info) { case PN533_DEVICE_STD: protocols = PN533_ALL_PROTOCOLS; break; case PN533_DEVICE_PASORI: protocols = PN533_NO_TYPE_B_PROTOCOLS; break; case PN533_DEVICE_ACR122U: protocols = PN533_NO_TYPE_B_PROTOCOLS; fops = &pn533_acr122_frame_ops; protocol_type = PN533_PROTO_REQ_RESP; rc = pn533_acr122_poweron_rdr(phy); if (rc < 0) { nfc_err(&interface->dev, "Couldn't poweron the reader (error %d)\n", rc); goto error; } break; default: nfc_err(&interface->dev, "Unknown device type %lu\n", id->driver_info); rc = -EINVAL; goto error; } priv = pn53x_common_init(id->driver_info, protocol_type, phy, &usb_phy_ops, fops, &phy->udev->dev); if (IS_ERR(priv)) { rc = PTR_ERR(priv); goto error; } phy->priv = priv; rc = pn533_finalize_setup(priv); if (rc) goto err_clean; usb_set_intfdata(interface, phy); rc = pn53x_register_nfc(priv, protocols, &interface->dev); if (rc) goto err_clean; return 0; err_clean: pn53x_common_clean(priv); error: usb_kill_urb(phy->in_urb); usb_kill_urb(phy->out_urb); usb_kill_urb(phy->ack_urb); usb_free_urb(phy->in_urb); usb_free_urb(phy->out_urb); usb_free_urb(phy->ack_urb); usb_put_dev(phy->udev); kfree(in_buf); kfree(phy->ack_buffer); return rc; } static void pn533_usb_disconnect(struct usb_interface *interface) { struct pn533_usb_phy *phy = usb_get_intfdata(interface); if (!phy) return; pn53x_unregister_nfc(phy->priv); pn53x_common_clean(phy->priv); usb_set_intfdata(interface, NULL); usb_kill_urb(phy->in_urb); usb_kill_urb(phy->out_urb); usb_kill_urb(phy->ack_urb); kfree(phy->in_urb->transfer_buffer); usb_free_urb(phy->in_urb); usb_free_urb(phy->out_urb); usb_free_urb(phy->ack_urb); kfree(phy->ack_buffer); nfc_info(&interface->dev, "NXP PN533 NFC device disconnected\n"); } static struct usb_driver pn533_usb_driver = { .name = "pn533_usb", .probe = pn533_usb_probe, .disconnect = pn533_usb_disconnect, .id_table = pn533_usb_table, }; module_usb_driver(pn533_usb_driver); MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>"); MODULE_DESCRIPTION("PN533 USB driver ver " VERSION); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL"); |
| 577 579 579 | 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 */ #ifndef _ASM_X86_COMPAT_H #define _ASM_X86_COMPAT_H /* * Architecture specific compatibility types */ #include <linux/types.h> #include <linux/sched.h> #include <linux/sched/task_stack.h> #include <asm/processor.h> #include <asm/user32.h> #include <asm/unistd.h> #define compat_mode_t compat_mode_t typedef u16 compat_mode_t; #define __compat_uid_t __compat_uid_t typedef u16 __compat_uid_t; typedef u16 __compat_gid_t; #define compat_dev_t compat_dev_t typedef u16 compat_dev_t; #define compat_ipc_pid_t compat_ipc_pid_t typedef u16 compat_ipc_pid_t; #define compat_statfs compat_statfs #include <asm-generic/compat.h> #define COMPAT_UTS_MACHINE "i686\0\0" typedef u16 compat_nlink_t; struct compat_stat { u32 st_dev; compat_ino_t st_ino; compat_mode_t st_mode; compat_nlink_t st_nlink; __compat_uid_t st_uid; __compat_gid_t st_gid; u32 st_rdev; u32 st_size; u32 st_blksize; u32 st_blocks; u32 st_atime; u32 st_atime_nsec; u32 st_mtime; u32 st_mtime_nsec; u32 st_ctime; u32 st_ctime_nsec; u32 __unused4; u32 __unused5; }; /* * IA32 uses 4 byte alignment for 64 bit quantities, so we need to pack the * compat flock64 structure. */ #define __ARCH_NEED_COMPAT_FLOCK64_PACKED struct compat_statfs { int f_type; int f_bsize; int f_blocks; int f_bfree; int f_bavail; int f_files; int f_ffree; compat_fsid_t f_fsid; int f_namelen; /* SunOS ignores this field. */ int f_frsize; int f_flags; int f_spare[4]; }; #ifdef CONFIG_X86_X32_ABI #define COMPAT_USE_64BIT_TIME \ (!!(task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)) #endif static inline bool in_x32_syscall(void) { #ifdef CONFIG_X86_X32_ABI if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT) return true; #endif return false; } static inline bool in_32bit_syscall(void) { return in_ia32_syscall() || in_x32_syscall(); } #ifdef CONFIG_COMPAT static inline bool in_compat_syscall(void) { return in_32bit_syscall(); } #define in_compat_syscall in_compat_syscall /* override the generic impl */ #define compat_need_64bit_alignment_fixup in_ia32_syscall #endif struct compat_siginfo; #ifdef CONFIG_X86_X32_ABI int copy_siginfo_to_user32(struct compat_siginfo __user *to, const kernel_siginfo_t *from); #define copy_siginfo_to_user32 copy_siginfo_to_user32 #endif /* CONFIG_X86_X32_ABI */ #endif /* _ASM_X86_COMPAT_H */ |
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright(c) 2017 Intel Corporation. All rights reserved. * * This code is based in part on work published here: * * https://github.com/IAIK/KAISER * * The original work was written by and signed off by for the Linux * kernel by: * * Signed-off-by: Richard Fellner <richard.fellner@student.tugraz.at> * Signed-off-by: Moritz Lipp <moritz.lipp@iaik.tugraz.at> * Signed-off-by: Daniel Gruss <daniel.gruss@iaik.tugraz.at> * Signed-off-by: Michael Schwarz <michael.schwarz@iaik.tugraz.at> * * Major changes to the original code by: Dave Hansen <dave.hansen@intel.com> * Mostly rewritten by Thomas Gleixner <tglx@linutronix.de> and * Andy Lutomirsky <luto@amacapital.net> */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/types.h> #include <linux/bug.h> #include <linux/init.h> #include <linux/spinlock.h> #include <linux/mm.h> #include <linux/uaccess.h> #include <linux/cpu.h> #include <asm/cpufeature.h> #include <asm/hypervisor.h> #include <asm/vsyscall.h> #include <asm/cmdline.h> #include <asm/pti.h> #include <asm/tlbflush.h> #include <asm/desc.h> #include <asm/sections.h> #include <asm/set_memory.h> #undef pr_fmt #define pr_fmt(fmt) "Kernel/User page tables isolation: " fmt /* Backporting helper */ #ifndef __GFP_NOTRACK #define __GFP_NOTRACK 0 #endif /* * Define the page-table levels we clone for user-space on 32 * and 64 bit. */ #ifdef CONFIG_X86_64 #define PTI_LEVEL_KERNEL_IMAGE PTI_CLONE_PMD #else #define PTI_LEVEL_KERNEL_IMAGE PTI_CLONE_PTE #endif static void __init pti_print_if_insecure(const char *reason) { if (boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN)) pr_info("%s\n", reason); } static void __init pti_print_if_secure(const char *reason) { if (!boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN)) pr_info("%s\n", reason); } /* Assume mode is auto unless overridden via cmdline below. */ static enum pti_mode { PTI_AUTO = 0, PTI_FORCE_OFF, PTI_FORCE_ON } pti_mode; void __init pti_check_boottime_disable(void) { if (hypervisor_is_type(X86_HYPER_XEN_PV)) { pti_mode = PTI_FORCE_OFF; pti_print_if_insecure("disabled on XEN PV."); return; } if (cpu_mitigations_off()) pti_mode = PTI_FORCE_OFF; if (pti_mode == PTI_FORCE_OFF) { pti_print_if_insecure("disabled on command line."); return; } if (pti_mode == PTI_FORCE_ON) pti_print_if_secure("force enabled on command line."); if (pti_mode == PTI_AUTO && !boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN)) return; setup_force_cpu_cap(X86_FEATURE_PTI); } static int __init pti_parse_cmdline(char *arg) { if (!strcmp(arg, "off")) pti_mode = PTI_FORCE_OFF; else if (!strcmp(arg, "on")) pti_mode = PTI_FORCE_ON; else if (!strcmp(arg, "auto")) pti_mode = PTI_AUTO; else return -EINVAL; return 0; } early_param("pti", pti_parse_cmdline); static int __init pti_parse_cmdline_nopti(char *arg) { pti_mode = PTI_FORCE_OFF; return 0; } early_param("nopti", pti_parse_cmdline_nopti); pgd_t __pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd) { /* * Changes to the high (kernel) portion of the kernelmode page * tables are not automatically propagated to the usermode tables. * * Users should keep in mind that, unlike the kernelmode tables, * there is no vmalloc_fault equivalent for the usermode tables. * Top-level entries added to init_mm's usermode pgd after boot * will not be automatically propagated to other mms. */ if (!pgdp_maps_userspace(pgdp) || (pgd.pgd & _PAGE_NOPTISHADOW)) return pgd; /* * The user page tables get the full PGD, accessible from * userspace: */ kernel_to_user_pgdp(pgdp)->pgd = pgd.pgd; /* * If this is normal user memory, make it NX in the kernel * pagetables so that, if we somehow screw up and return to * usermode with the kernel CR3 loaded, we'll get a page fault * instead of allowing user code to execute with the wrong CR3. * * As exceptions, we don't set NX if: * - _PAGE_USER is not set. This could be an executable * EFI runtime mapping or something similar, and the kernel * may execute from it * - we don't have NX support * - we're clearing the PGD (i.e. the new pgd is not present). */ if ((pgd.pgd & (_PAGE_USER|_PAGE_PRESENT)) == (_PAGE_USER|_PAGE_PRESENT) && (__supported_pte_mask & _PAGE_NX)) pgd.pgd |= _PAGE_NX; /* return the copy of the PGD we want the kernel to use: */ return pgd; } /* * Walk the user copy of the page tables (optionally) trying to allocate * page table pages on the way down. * * Returns a pointer to a P4D on success, or NULL on failure. */ static p4d_t *pti_user_pagetable_walk_p4d(unsigned long address) { pgd_t *pgd = kernel_to_user_pgdp(pgd_offset_k(address)); gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO); if (address < PAGE_OFFSET) { WARN_ONCE(1, "attempt to walk user address\n"); return NULL; } if (pgd_none(*pgd)) { unsigned long new_p4d_page = __get_free_page(gfp); if (WARN_ON_ONCE(!new_p4d_page)) return NULL; set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(new_p4d_page))); } BUILD_BUG_ON(pgd_leaf(*pgd) != 0); return p4d_offset(pgd, address); } /* * Walk the user copy of the page tables (optionally) trying to allocate * page table pages on the way down. * * Returns a pointer to a PMD on success, or NULL on failure. */ static pmd_t *pti_user_pagetable_walk_pmd(unsigned long address) { gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO); p4d_t *p4d; pud_t *pud; p4d = pti_user_pagetable_walk_p4d(address); if (!p4d) return NULL; BUILD_BUG_ON(p4d_leaf(*p4d) != 0); if (p4d_none(*p4d)) { unsigned long new_pud_page = __get_free_page(gfp); if (WARN_ON_ONCE(!new_pud_page)) return NULL; set_p4d(p4d, __p4d(_KERNPG_TABLE | __pa(new_pud_page))); } pud = pud_offset(p4d, address); /* The user page tables do not use large mappings: */ if (pud_leaf(*pud)) { WARN_ON(1); return NULL; } if (pud_none(*pud)) { unsigned long new_pmd_page = __get_free_page(gfp); if (WARN_ON_ONCE(!new_pmd_page)) return NULL; set_pud(pud, __pud(_KERNPG_TABLE | __pa(new_pmd_page))); } return pmd_offset(pud, address); } /* * Walk the shadow copy of the page tables (optionally) trying to allocate * page table pages on the way down. Does not support large pages. * * Note: this is only used when mapping *new* kernel data into the * user/shadow page tables. It is never used for userspace data. * * Returns a pointer to a PTE on success, or NULL on failure. */ static pte_t *pti_user_pagetable_walk_pte(unsigned long address, bool late_text) { gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO); pmd_t *pmd; pte_t *pte; pmd = pti_user_pagetable_walk_pmd(address); if (!pmd) return NULL; /* Large PMD mapping found */ if (pmd_leaf(*pmd)) { /* Clear the PMD if we hit a large mapping from the first round */ if (late_text) { set_pmd(pmd, __pmd(0)); } else { WARN_ON_ONCE(1); return NULL; } } if (pmd_none(*pmd)) { unsigned long new_pte_page = __get_free_page(gfp); if (!new_pte_page) return NULL; set_pmd(pmd, __pmd(_KERNPG_TABLE | __pa(new_pte_page))); } pte = pte_offset_kernel(pmd, address); if (pte_flags(*pte) & _PAGE_USER) { WARN_ONCE(1, "attempt to walk to user pte\n"); return NULL; } return pte; } #ifdef CONFIG_X86_VSYSCALL_EMULATION static void __init pti_setup_vsyscall(void) { pte_t *pte, *target_pte; unsigned int level; pte = lookup_address(VSYSCALL_ADDR, &level); if (!pte || WARN_ON(level != PG_LEVEL_4K) || pte_none(*pte)) return; target_pte = pti_user_pagetable_walk_pte(VSYSCALL_ADDR, false); if (WARN_ON(!target_pte)) return; *target_pte = *pte; set_vsyscall_pgtable_user_bits(kernel_to_user_pgdp(swapper_pg_dir)); } #else static void __init pti_setup_vsyscall(void) { } #endif enum pti_clone_level { PTI_CLONE_PMD, PTI_CLONE_PTE, }; static void pti_clone_pgtable(unsigned long start, unsigned long end, enum pti_clone_level level, bool late_text) { unsigned long addr; /* * Clone the populated PMDs which cover start to end. These PMD areas * can have holes. */ for (addr = start; addr < end;) { pte_t *pte, *target_pte; pmd_t *pmd, *target_pmd; pgd_t *pgd; p4d_t *p4d; pud_t *pud; /* Overflow check */ if (addr < start) break; pgd = pgd_offset_k(addr); if (WARN_ON(pgd_none(*pgd))) return; p4d = p4d_offset(pgd, addr); if (WARN_ON(p4d_none(*p4d))) return; pud = pud_offset(p4d, addr); if (pud_none(*pud)) { WARN_ON_ONCE(addr & ~PUD_MASK); addr = round_up(addr + 1, PUD_SIZE); continue; } pmd = pmd_offset(pud, addr); if (pmd_none(*pmd)) { WARN_ON_ONCE(addr & ~PMD_MASK); addr = round_up(addr + 1, PMD_SIZE); continue; } if (pmd_leaf(*pmd) || level == PTI_CLONE_PMD) { target_pmd = pti_user_pagetable_walk_pmd(addr); if (WARN_ON(!target_pmd)) return; /* * Only clone present PMDs. This ensures only setting * _PAGE_GLOBAL on present PMDs. This should only be * called on well-known addresses anyway, so a non- * present PMD would be a surprise. */ if (WARN_ON(!(pmd_flags(*pmd) & _PAGE_PRESENT))) return; /* * Setting 'target_pmd' below creates a mapping in both * the user and kernel page tables. It is effectively * global, so set it as global in both copies. Note: * the X86_FEATURE_PGE check is not _required_ because * the CPU ignores _PAGE_GLOBAL when PGE is not * supported. The check keeps consistency with * code that only set this bit when supported. */ if (boot_cpu_has(X86_FEATURE_PGE)) *pmd = pmd_set_flags(*pmd, _PAGE_GLOBAL); /* * Copy the PMD. That is, the kernelmode and usermode * tables will share the last-level page tables of this * address range */ *target_pmd = *pmd; addr = round_up(addr + 1, PMD_SIZE); } else if (level == PTI_CLONE_PTE) { /* Walk the page-table down to the pte level */ pte = pte_offset_kernel(pmd, addr); if (pte_none(*pte)) { addr = round_up(addr + 1, PAGE_SIZE); continue; } /* Only clone present PTEs */ if (WARN_ON(!(pte_flags(*pte) & _PAGE_PRESENT))) return; /* Allocate PTE in the user page-table */ target_pte = pti_user_pagetable_walk_pte(addr, late_text); if (WARN_ON(!target_pte)) return; /* Set GLOBAL bit in both PTEs */ if (boot_cpu_has(X86_FEATURE_PGE)) *pte = pte_set_flags(*pte, _PAGE_GLOBAL); /* Clone the PTE */ *target_pte = *pte; addr = round_up(addr + 1, PAGE_SIZE); } else { BUG(); } } } #ifdef CONFIG_X86_64 /* * Clone a single p4d (i.e. a top-level entry on 4-level systems and a * next-level entry on 5-level systems. */ static void __init pti_clone_p4d(unsigned long addr) { p4d_t *kernel_p4d, *user_p4d; pgd_t *kernel_pgd; user_p4d = pti_user_pagetable_walk_p4d(addr); if (!user_p4d) return; kernel_pgd = pgd_offset_k(addr); kernel_p4d = p4d_offset(kernel_pgd, addr); *user_p4d = *kernel_p4d; } /* * Clone the CPU_ENTRY_AREA and associated data into the user space visible * page table. */ static void __init pti_clone_user_shared(void) { unsigned int cpu; pti_clone_p4d(CPU_ENTRY_AREA_BASE); for_each_possible_cpu(cpu) { /* * The SYSCALL64 entry code needs one word of scratch space * in which to spill a register. It lives in the sp2 slot * of the CPU's TSS. * * This is done for all possible CPUs during boot to ensure * that it's propagated to all mms. */ unsigned long va = (unsigned long)&per_cpu(cpu_tss_rw, cpu); phys_addr_t pa = per_cpu_ptr_to_phys((void *)va); pte_t *target_pte; target_pte = pti_user_pagetable_walk_pte(va, false); if (WARN_ON(!target_pte)) return; *target_pte = pfn_pte(pa >> PAGE_SHIFT, PAGE_KERNEL); } } #else /* CONFIG_X86_64 */ /* * On 32 bit PAE systems with 1GB of Kernel address space there is only * one pgd/p4d for the whole kernel. Cloning that would map the whole * address space into the user page-tables, making PTI useless. So clone * the page-table on the PMD level to prevent that. */ static void __init pti_clone_user_shared(void) { unsigned long start, end; start = CPU_ENTRY_AREA_BASE; end = start + (PAGE_SIZE * CPU_ENTRY_AREA_PAGES); pti_clone_pgtable(start, end, PTI_CLONE_PMD, false); } #endif /* CONFIG_X86_64 */ /* * Clone the ESPFIX P4D into the user space visible page table */ static void __init pti_setup_espfix64(void) { #ifdef CONFIG_X86_ESPFIX64 pti_clone_p4d(ESPFIX_BASE_ADDR); #endif } /* * Clone the populated PMDs of the entry text and force it RO. */ static void pti_clone_entry_text(bool late) { pti_clone_pgtable((unsigned long) __entry_text_start, (unsigned long) __entry_text_end, PTI_LEVEL_KERNEL_IMAGE, late); } /* * Global pages and PCIDs are both ways to make kernel TLB entries * live longer, reduce TLB misses and improve kernel performance. * But, leaving all kernel text Global makes it potentially accessible * to Meltdown-style attacks which make it trivial to find gadgets or * defeat KASLR. * * Only use global pages when it is really worth it. */ static inline bool pti_kernel_image_global_ok(void) { /* * Systems with PCIDs get little benefit from global * kernel text and are not worth the downsides. */ if (cpu_feature_enabled(X86_FEATURE_PCID)) return false; /* * Only do global kernel image for pti=auto. Do the most * secure thing (not global) if pti=on specified. */ if (pti_mode != PTI_AUTO) return false; /* * K8 may not tolerate the cleared _PAGE_RW on the userspace * global kernel image pages. Do the safe thing (disable * global kernel image). This is unlikely to ever be * noticed because PTI is disabled by default on AMD CPUs. */ if (boot_cpu_has(X86_FEATURE_K8)) return false; /* * RANDSTRUCT derives its hardening benefits from the * attacker's lack of knowledge about the layout of kernel * data structures. Keep the kernel image non-global in * cases where RANDSTRUCT is in use to help keep the layout a * secret. */ if (IS_ENABLED(CONFIG_RANDSTRUCT)) return false; return true; } /* * For some configurations, map all of kernel text into the user page * tables. This reduces TLB misses, especially on non-PCID systems. */ static void pti_clone_kernel_text(void) { /* * rodata is part of the kernel image and is normally * readable on the filesystem or on the web. But, do not * clone the areas past rodata, they might contain secrets. */ unsigned long start = PFN_ALIGN(_text); unsigned long end_clone = (unsigned long)__end_rodata_aligned; unsigned long end_global = PFN_ALIGN((unsigned long)_etext); if (!pti_kernel_image_global_ok()) return; pr_debug("mapping partial kernel image into user address space\n"); /* * Note that this will undo _some_ of the work that * pti_set_kernel_image_nonglobal() did to clear the * global bit. */ pti_clone_pgtable(start, end_clone, PTI_LEVEL_KERNEL_IMAGE, false); /* * pti_clone_pgtable() will set the global bit in any PMDs * that it clones, but we also need to get any PTEs in * the last level for areas that are not huge-page-aligned. */ /* Set the global bit for normal non-__init kernel text: */ set_memory_global(start, (end_global - start) >> PAGE_SHIFT); } static void pti_set_kernel_image_nonglobal(void) { /* * The identity map is created with PMDs, regardless of the * actual length of the kernel. We need to clear * _PAGE_GLOBAL up to a PMD boundary, not just to the end * of the image. */ unsigned long start = PFN_ALIGN(_text); unsigned long end = ALIGN((unsigned long)_end, PMD_SIZE); /* * This clears _PAGE_GLOBAL from the entire kernel image. * pti_clone_kernel_text() map put _PAGE_GLOBAL back for * areas that are mapped to userspace. */ set_memory_nonglobal(start, (end - start) >> PAGE_SHIFT); } /* * Initialize kernel page table isolation */ void __init pti_init(void) { if (!boot_cpu_has(X86_FEATURE_PTI)) return; pr_info("enabled\n"); #ifdef CONFIG_X86_32 /* * We check for X86_FEATURE_PCID here. But the init-code will * clear the feature flag on 32 bit because the feature is not * supported on 32 bit anyway. To print the warning we need to * check with cpuid directly again. */ if (cpuid_ecx(0x1) & BIT(17)) { /* Use printk to work around pr_fmt() */ printk(KERN_WARNING "\n"); printk(KERN_WARNING "************************************************************\n"); printk(KERN_WARNING "** WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! **\n"); printk(KERN_WARNING "** **\n"); printk(KERN_WARNING "** You are using 32-bit PTI on a 64-bit PCID-capable CPU. **\n"); printk(KERN_WARNING "** Your performance will increase dramatically if you **\n"); printk(KERN_WARNING "** switch to a 64-bit kernel! **\n"); printk(KERN_WARNING "** **\n"); printk(KERN_WARNING "** WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! **\n"); printk(KERN_WARNING "************************************************************\n"); } #endif pti_clone_user_shared(); /* Undo all global bits from the init pagetables in head_64.S: */ pti_set_kernel_image_nonglobal(); /* Replace some of the global bits just for shared entry text: */ /* * This is very early in boot. Device and Late initcalls can do * modprobe before free_initmem() and mark_readonly(). This * pti_clone_entry_text() allows those user-mode-helpers to function, * but notably the text is still RW. */ pti_clone_entry_text(false); pti_setup_espfix64(); pti_setup_vsyscall(); } /* * Finalize the kernel mappings in the userspace page-table. Some of the * mappings for the kernel image might have changed since pti_init() * cloned them. This is because parts of the kernel image have been * mapped RO and/or NX. These changes need to be cloned again to the * userspace page-table. */ void pti_finalize(void) { if (!boot_cpu_has(X86_FEATURE_PTI)) return; /* * This is after free_initmem() (all initcalls are done) and we've done * mark_readonly(). Text is now NX which might've split some PMDs * relative to the early clone. */ pti_clone_entry_text(true); pti_clone_kernel_text(); debug_checkwx_user(); } |
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/*************************************************************************** * * Copyright (C) 2007-2010 SMSC * *****************************************************************************/ #include <linux/module.h> #include <linux/kmod.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/usb.h> #include <linux/bitrev.h> #include <linux/crc16.h> #include <linux/crc32.h> #include <linux/usb/usbnet.h> #include <linux/slab.h> #include <linux/of_net.h> #include "smsc75xx.h" #define SMSC_CHIPNAME "smsc75xx" #define SMSC_DRIVER_VERSION "1.0.0" #define HS_USB_PKT_SIZE (512) #define FS_USB_PKT_SIZE (64) #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) #define DEFAULT_BULK_IN_DELAY (0x00002000) #define MAX_SINGLE_PACKET_SIZE (9000) #define LAN75XX_EEPROM_MAGIC (0x7500) #define EEPROM_MAC_OFFSET (0x01) #define DEFAULT_TX_CSUM_ENABLE (true) #define DEFAULT_RX_CSUM_ENABLE (true) #define SMSC75XX_INTERNAL_PHY_ID (1) #define SMSC75XX_TX_OVERHEAD (8) #define MAX_RX_FIFO_SIZE (20 * 1024) #define MAX_TX_FIFO_SIZE (12 * 1024) #define USB_VENDOR_ID_SMSC (0x0424) #define USB_PRODUCT_ID_LAN7500 (0x7500) #define USB_PRODUCT_ID_LAN7505 (0x7505) #define RXW_PADDING 2 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) #define SUSPEND_SUSPEND0 (0x01) #define SUSPEND_SUSPEND1 (0x02) #define SUSPEND_SUSPEND2 (0x04) #define SUSPEND_SUSPEND3 (0x08) #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) struct smsc75xx_priv { struct usbnet *dev; u32 rfe_ctl; u32 wolopts; u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; struct mutex dataport_mutex; spinlock_t rfe_ctl_lock; struct work_struct set_multicast; u8 suspend_flags; }; static bool turbo_mode = true; module_param(turbo_mode, bool, 0644); MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); static int smsc75xx_link_ok_nopm(struct usbnet *dev); static int smsc75xx_phy_gig_workaround(struct usbnet *dev); static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, u32 *data, int in_pm) { u32 buf; int ret; int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); BUG_ON(!dev); if (!in_pm) fn = usbnet_read_cmd; else fn = usbnet_read_cmd_nopm; ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, &buf, 4); if (unlikely(ret < 4)) { ret = ret < 0 ? ret : -ENODATA; netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", index, ret); return ret; } le32_to_cpus(&buf); *data = buf; return ret; } static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, u32 data, int in_pm) { u32 buf; int ret; int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); BUG_ON(!dev); if (!in_pm) fn = usbnet_write_cmd; else fn = usbnet_write_cmd_nopm; buf = data; cpu_to_le32s(&buf); ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, &buf, 4); if (unlikely(ret < 0)) netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", index, ret); return ret; } static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, u32 *data) { return __smsc75xx_read_reg(dev, index, data, 1); } static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, u32 data) { return __smsc75xx_write_reg(dev, index, data, 1); } static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, u32 *data) { return __smsc75xx_read_reg(dev, index, data, 0); } static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, u32 data) { return __smsc75xx_write_reg(dev, index, data, 0); } /* Loop until the read is completed with timeout * called with phy_mutex held */ static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, int in_pm) { unsigned long start_time = jiffies; u32 val; int ret; do { ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); if (ret < 0) { netdev_warn(dev->net, "Error reading MII_ACCESS\n"); return ret; } if (!(val & MII_ACCESS_BUSY)) return 0; } while (!time_after(jiffies, start_time + HZ)); return -EIO; } static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, int in_pm) { struct usbnet *dev = netdev_priv(netdev); u32 val, addr; int ret; mutex_lock(&dev->phy_mutex); /* confirm MII not busy */ ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); if (ret < 0) { netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); goto done; } /* set the address, index & direction (read from PHY) */ phy_id &= dev->mii.phy_id_mask; idx &= dev->mii.reg_num_mask; addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) | MII_ACCESS_READ | MII_ACCESS_BUSY; ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); if (ret < 0) { netdev_warn(dev->net, "Error writing MII_ACCESS\n"); goto done; } ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); if (ret < 0) { netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); goto done; } ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); if (ret < 0) { netdev_warn(dev->net, "Error reading MII_DATA\n"); goto done; } ret = (u16)(val & 0xFFFF); done: mutex_unlock(&dev->phy_mutex); return ret; } static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, int regval, int in_pm) { struct usbnet *dev = netdev_priv(netdev); u32 val, addr; int ret; mutex_lock(&dev->phy_mutex); /* confirm MII not busy */ ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); if (ret < 0) { netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); goto done; } val = regval; ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); if (ret < 0) { netdev_warn(dev->net, "Error writing MII_DATA\n"); goto done; } /* set the address, index & direction (write to PHY) */ phy_id &= dev->mii.phy_id_mask; idx &= dev->mii.reg_num_mask; addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) | MII_ACCESS_WRITE | MII_ACCESS_BUSY; ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); if (ret < 0) { netdev_warn(dev->net, "Error writing MII_ACCESS\n"); goto done; } ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); if (ret < 0) { netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); goto done; } done: mutex_unlock(&dev->phy_mutex); } static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, int idx) { return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); } static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, int idx, int regval) { __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); } static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) { return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); } static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, int regval) { __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); } static int smsc75xx_wait_eeprom(struct usbnet *dev) { unsigned long start_time = jiffies; u32 val; int ret; do { ret = smsc75xx_read_reg(dev, E2P_CMD, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading E2P_CMD\n"); return ret; } if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) break; udelay(40); } while (!time_after(jiffies, start_time + HZ)); if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { netdev_warn(dev->net, "EEPROM read operation timeout\n"); return -EIO; } return 0; } static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) { unsigned long start_time = jiffies; u32 val; int ret; do { ret = smsc75xx_read_reg(dev, E2P_CMD, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading E2P_CMD\n"); return ret; } if (!(val & E2P_CMD_BUSY)) return 0; udelay(40); } while (!time_after(jiffies, start_time + HZ)); netdev_warn(dev->net, "EEPROM is busy\n"); return -EIO; } static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, u8 *data) { u32 val; int i, ret; BUG_ON(!dev); BUG_ON(!data); ret = smsc75xx_eeprom_confirm_not_busy(dev); if (ret) return ret; for (i = 0; i < length; i++) { val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); ret = smsc75xx_write_reg(dev, E2P_CMD, val); if (ret < 0) { netdev_warn(dev->net, "Error writing E2P_CMD\n"); return ret; } ret = smsc75xx_wait_eeprom(dev); if (ret < 0) return ret; ret = smsc75xx_read_reg(dev, E2P_DATA, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading E2P_DATA\n"); return ret; } data[i] = val & 0xFF; offset++; } return 0; } static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, u8 *data) { u32 val; int i, ret; BUG_ON(!dev); BUG_ON(!data); ret = smsc75xx_eeprom_confirm_not_busy(dev); if (ret) return ret; /* Issue write/erase enable command */ val = E2P_CMD_BUSY | E2P_CMD_EWEN; ret = smsc75xx_write_reg(dev, E2P_CMD, val); if (ret < 0) { netdev_warn(dev->net, "Error writing E2P_CMD\n"); return ret; } ret = smsc75xx_wait_eeprom(dev); if (ret < 0) return ret; for (i = 0; i < length; i++) { /* Fill data register */ val = data[i]; ret = smsc75xx_write_reg(dev, E2P_DATA, val); if (ret < 0) { netdev_warn(dev->net, "Error writing E2P_DATA\n"); return ret; } /* Send "write" command */ val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); ret = smsc75xx_write_reg(dev, E2P_CMD, val); if (ret < 0) { netdev_warn(dev->net, "Error writing E2P_CMD\n"); return ret; } ret = smsc75xx_wait_eeprom(dev); if (ret < 0) return ret; offset++; } return 0; } static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) { int i, ret; for (i = 0; i < 100; i++) { u32 dp_sel; ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); if (ret < 0) { netdev_warn(dev->net, "Error reading DP_SEL\n"); return ret; } if (dp_sel & DP_SEL_DPRDY) return 0; udelay(40); } netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); return -EIO; } static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, u32 length, u32 *buf) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u32 dp_sel; int i, ret; mutex_lock(&pdata->dataport_mutex); ret = smsc75xx_dataport_wait_not_busy(dev); if (ret < 0) { netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); goto done; } ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); if (ret < 0) { netdev_warn(dev->net, "Error reading DP_SEL\n"); goto done; } dp_sel &= ~DP_SEL_RSEL; dp_sel |= ram_select; ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); if (ret < 0) { netdev_warn(dev->net, "Error writing DP_SEL\n"); goto done; } for (i = 0; i < length; i++) { ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); if (ret < 0) { netdev_warn(dev->net, "Error writing DP_ADDR\n"); goto done; } ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); if (ret < 0) { netdev_warn(dev->net, "Error writing DP_DATA\n"); goto done; } ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); if (ret < 0) { netdev_warn(dev->net, "Error writing DP_CMD\n"); goto done; } ret = smsc75xx_dataport_wait_not_busy(dev); if (ret < 0) { netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); goto done; } } done: mutex_unlock(&pdata->dataport_mutex); return ret; } /* returns hash bit number for given MAC address */ static u32 smsc75xx_hash(char addr[ETH_ALEN]) { return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; } static void smsc75xx_deferred_multicast_write(struct work_struct *param) { struct smsc75xx_priv *pdata = container_of(param, struct smsc75xx_priv, set_multicast); struct usbnet *dev = pdata->dev; int ret; netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", pdata->rfe_ctl); smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); if (ret < 0) netdev_warn(dev->net, "Error writing RFE_CRL\n"); } static void smsc75xx_set_multicast(struct net_device *netdev) { struct usbnet *dev = netdev_priv(netdev); struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); unsigned long flags; int i; spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); pdata->rfe_ctl &= ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); pdata->rfe_ctl |= RFE_CTL_AB; for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) pdata->multicast_hash_table[i] = 0; if (dev->net->flags & IFF_PROMISC) { netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; } else if (dev->net->flags & IFF_ALLMULTI) { netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; } else if (!netdev_mc_empty(dev->net)) { struct netdev_hw_addr *ha; netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; netdev_for_each_mc_addr(ha, netdev) { u32 bitnum = smsc75xx_hash(ha->addr); pdata->multicast_hash_table[bitnum / 32] |= (1 << (bitnum % 32)); } } else { netif_dbg(dev, drv, dev->net, "receive own packets only\n"); pdata->rfe_ctl |= RFE_CTL_DPF; } spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); /* defer register writes to a sleepable context */ schedule_work(&pdata->set_multicast); } static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, u16 lcladv, u16 rmtadv) { u32 flow = 0, fct_flow = 0; int ret; if (duplex == DUPLEX_FULL) { u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); if (cap & FLOW_CTRL_TX) { flow = (FLOW_TX_FCEN | 0xFFFF); /* set fct_flow thresholds to 20% and 80% */ fct_flow = (8 << 8) | 32; } if (cap & FLOW_CTRL_RX) flow |= FLOW_RX_FCEN; netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); } else { netif_dbg(dev, link, dev->net, "half duplex\n"); } ret = smsc75xx_write_reg(dev, FLOW, flow); if (ret < 0) { netdev_warn(dev->net, "Error writing FLOW\n"); return ret; } ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); if (ret < 0) { netdev_warn(dev->net, "Error writing FCT_FLOW\n"); return ret; } return 0; } static int smsc75xx_link_reset(struct usbnet *dev) { struct mii_if_info *mii = &dev->mii; struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; u16 lcladv, rmtadv; int ret; /* write to clear phy interrupt status */ smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, PHY_INT_SRC_CLEAR_ALL); ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); if (ret < 0) { netdev_warn(dev->net, "Error writing INT_STS\n"); return ret; } mii_check_media(mii, 1, 1); mii_ethtool_gset(&dev->mii, &ecmd); lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); } static void smsc75xx_status(struct usbnet *dev, struct urb *urb) { u32 intdata; if (urb->actual_length != 4) { netdev_warn(dev->net, "unexpected urb length %d\n", urb->actual_length); return; } intdata = get_unaligned_le32(urb->transfer_buffer); netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); if (intdata & INT_ENP_PHY_INT) usbnet_defer_kevent(dev, EVENT_LINK_RESET); else netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", intdata); } static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) { return MAX_EEPROM_SIZE; } static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee, u8 *data) { struct usbnet *dev = netdev_priv(netdev); ee->magic = LAN75XX_EEPROM_MAGIC; return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); } static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee, u8 *data) { struct usbnet *dev = netdev_priv(netdev); if (ee->magic != LAN75XX_EEPROM_MAGIC) { netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", ee->magic); return -EINVAL; } return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); } static void smsc75xx_ethtool_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) { struct usbnet *dev = netdev_priv(net); struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); wolinfo->supported = SUPPORTED_WAKE; wolinfo->wolopts = pdata->wolopts; } static int smsc75xx_ethtool_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) { struct usbnet *dev = netdev_priv(net); struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); int ret; if (wolinfo->wolopts & ~SUPPORTED_WAKE) return -EINVAL; pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); if (ret < 0) netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); return ret; } static const struct ethtool_ops smsc75xx_ethtool_ops = { .get_link = usbnet_get_link, .nway_reset = usbnet_nway_reset, .get_drvinfo = usbnet_get_drvinfo, .get_msglevel = usbnet_get_msglevel, .set_msglevel = usbnet_set_msglevel, .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, .get_eeprom = smsc75xx_ethtool_get_eeprom, .set_eeprom = smsc75xx_ethtool_set_eeprom, .get_wol = smsc75xx_ethtool_get_wol, .set_wol = smsc75xx_ethtool_set_wol, .get_link_ksettings = usbnet_get_link_ksettings_mii, .set_link_ksettings = usbnet_set_link_ksettings_mii, }; static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) { struct usbnet *dev = netdev_priv(netdev); if (!netif_running(netdev)) return -EINVAL; return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); } static void smsc75xx_init_mac_address(struct usbnet *dev) { u8 addr[ETH_ALEN]; /* maybe the boot loader passed the MAC address in devicetree */ if (!platform_get_ethdev_address(&dev->udev->dev, dev->net)) { if (is_valid_ether_addr(dev->net->dev_addr)) { /* device tree values are valid so use them */ netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n"); return; } } /* try reading mac address from EEPROM */ if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, addr) == 0) { eth_hw_addr_set(dev->net, addr); if (is_valid_ether_addr(dev->net->dev_addr)) { /* eeprom values are valid so use them */ netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); return; } } /* no useful static MAC address found. generate a random one */ eth_hw_addr_random(dev->net); netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); } static int smsc75xx_set_mac_address(struct usbnet *dev) { u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); if (ret < 0) { netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); return ret; } ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); if (ret < 0) { netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); return ret; } addr_hi |= ADDR_FILTX_FB_VALID; ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); if (ret < 0) { netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); return ret; } ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); if (ret < 0) netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); return ret; } static int smsc75xx_phy_initialize(struct usbnet *dev) { int bmcr, ret, timeout = 0; /* Initialize MII structure */ dev->mii.dev = dev->net; dev->mii.mdio_read = smsc75xx_mdio_read; dev->mii.mdio_write = smsc75xx_mdio_write; dev->mii.phy_id_mask = 0x1f; dev->mii.reg_num_mask = 0x1f; dev->mii.supports_gmii = 1; dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; /* reset phy and wait for reset to complete */ smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); do { msleep(10); bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); if (bmcr < 0) { netdev_warn(dev->net, "Error reading MII_BMCR\n"); return bmcr; } timeout++; } while ((bmcr & BMCR_RESET) && (timeout < 100)); if (timeout >= 100) { netdev_warn(dev->net, "timeout on PHY Reset\n"); return -EIO; } /* phy workaround for gig link */ smsc75xx_phy_gig_workaround(dev); smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, ADVERTISE_1000FULL); /* read and write to clear phy interrupt status */ ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); if (ret < 0) { netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); return ret; } smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, PHY_INT_MASK_DEFAULT); mii_nway_restart(&dev->mii); netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); return 0; } static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) { int ret = 0; u32 buf; bool rxenabled; ret = smsc75xx_read_reg(dev, MAC_RX, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); return ret; } rxenabled = ((buf & MAC_RX_RXEN) != 0); if (rxenabled) { buf &= ~MAC_RX_RXEN; ret = smsc75xx_write_reg(dev, MAC_RX, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); return ret; } } /* add 4 to size for FCS */ buf &= ~MAC_RX_MAX_SIZE; buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); ret = smsc75xx_write_reg(dev, MAC_RX, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); return ret; } if (rxenabled) { buf |= MAC_RX_RXEN; ret = smsc75xx_write_reg(dev, MAC_RX, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); return ret; } } return 0; } static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) { struct usbnet *dev = netdev_priv(netdev); int ret; ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); if (ret < 0) { netdev_warn(dev->net, "Failed to set mac rx frame length\n"); return ret; } return usbnet_change_mtu(netdev, new_mtu); } /* Enable or disable Rx checksum offload engine */ static int smsc75xx_set_features(struct net_device *netdev, netdev_features_t features) { struct usbnet *dev = netdev_priv(netdev); struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); unsigned long flags; int ret; spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); if (features & NETIF_F_RXCSUM) pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; else pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); /* it's racing here! */ ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); if (ret < 0) { netdev_warn(dev->net, "Error writing RFE_CTL\n"); return ret; } return 0; } static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) { int timeout = 0; do { u32 buf; int ret; ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); if (ret < 0) { netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); return ret; } if (buf & PMT_CTL_DEV_RDY) return 0; msleep(10); timeout++; } while (timeout < 100); netdev_warn(dev->net, "timeout waiting for device ready\n"); return -EIO; } static int smsc75xx_phy_gig_workaround(struct usbnet *dev) { struct mii_if_info *mii = &dev->mii; int ret = 0, timeout = 0; u32 buf, link_up = 0; /* Set the phy in Gig loopback */ smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040); /* Wait for the link up */ do { link_up = smsc75xx_link_ok_nopm(dev); usleep_range(10000, 20000); timeout++; } while ((!link_up) && (timeout < 1000)); if (timeout >= 1000) { netdev_warn(dev->net, "Timeout waiting for PHY link up\n"); return -EIO; } /* phy reset */ ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); return ret; } buf |= PMT_CTL_PHY_RST; ret = smsc75xx_write_reg(dev, PMT_CTL, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); return ret; } timeout = 0; do { usleep_range(10000, 20000); ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); return ret; } timeout++; } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); if (timeout >= 100) { netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); return -EIO; } return 0; } static int smsc75xx_reset(struct usbnet *dev) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u32 buf; int ret = 0, timeout; netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); ret = smsc75xx_wait_ready(dev, 0); if (ret < 0) { netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); return ret; } ret = smsc75xx_read_reg(dev, HW_CFG, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); return ret; } buf |= HW_CFG_LRST; ret = smsc75xx_write_reg(dev, HW_CFG, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); return ret; } timeout = 0; do { msleep(10); ret = smsc75xx_read_reg(dev, HW_CFG, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); return ret; } timeout++; } while ((buf & HW_CFG_LRST) && (timeout < 100)); if (timeout >= 100) { netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); return -EIO; } netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); return ret; } buf |= PMT_CTL_PHY_RST; ret = smsc75xx_write_reg(dev, PMT_CTL, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); return ret; } timeout = 0; do { msleep(10); ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); return ret; } timeout++; } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); if (timeout >= 100) { netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); return -EIO; } netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); ret = smsc75xx_set_mac_address(dev); if (ret < 0) { netdev_warn(dev->net, "Failed to set mac address\n"); return ret; } netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", dev->net->dev_addr); ret = smsc75xx_read_reg(dev, HW_CFG, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", buf); buf |= HW_CFG_BIR; ret = smsc75xx_write_reg(dev, HW_CFG, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, HW_CFG, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", buf); if (!turbo_mode) { buf = 0; dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; } else if (dev->udev->speed == USB_SPEED_HIGH) { buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; } else { buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; } netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", (ulong)dev->rx_urb_size); ret = smsc75xx_write_reg(dev, BURST_CAP, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "Read Value from BURST_CAP after writing: 0x%08x\n", buf); ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); if (ret < 0) { netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); if (turbo_mode) { ret = smsc75xx_read_reg(dev, HW_CFG, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); buf |= (HW_CFG_MEF | HW_CFG_BCE); ret = smsc75xx_write_reg(dev, HW_CFG, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, HW_CFG, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); } /* set FIFO sizes */ buf = (MAX_RX_FIFO_SIZE - 512) / 512; ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); buf = (MAX_TX_FIFO_SIZE - 512) / 512; ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); if (ret < 0) { netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, ID_REV, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); return ret; } /* only set default GPIO/LED settings if no EEPROM is detected */ if (!(buf & E2P_CMD_LOADED)) { ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); return ret; } buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); return ret; } } ret = smsc75xx_write_reg(dev, FLOW, 0); if (ret < 0) { netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); return ret; } ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); if (ret < 0) { netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); return ret; } /* Don't need rfe_ctl_lock during initialisation */ ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); if (ret < 0) { netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); return ret; } pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); if (ret < 0) { netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); if (ret < 0) { netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", pdata->rfe_ctl); /* Enable or disable checksum offload engines */ smsc75xx_set_features(dev->net, dev->net->features); smsc75xx_set_multicast(dev->net); ret = smsc75xx_phy_initialize(dev); if (ret < 0) { netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); return ret; } /* enable PHY interrupts */ buf |= INT_ENP_PHY_INT; ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); return ret; } /* allow mac to detect speed and duplex from phy */ ret = smsc75xx_read_reg(dev, MAC_CR, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); return ret; } buf |= (MAC_CR_ADD | MAC_CR_ASD); ret = smsc75xx_write_reg(dev, MAC_CR, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); return ret; } ret = smsc75xx_read_reg(dev, MAC_TX, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); return ret; } buf |= MAC_TX_TXEN; ret = smsc75xx_write_reg(dev, MAC_TX, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); return ret; } buf |= FCT_TX_CTL_EN; ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); if (ret < 0) { netdev_warn(dev->net, "Failed to set max rx frame length\n"); return ret; } ret = smsc75xx_read_reg(dev, MAC_RX, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); return ret; } buf |= MAC_RX_RXEN; ret = smsc75xx_write_reg(dev, MAC_RX, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); if (ret < 0) { netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); return ret; } buf |= FCT_RX_CTL_EN; ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); if (ret < 0) { netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); return ret; } netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); return 0; } static const struct net_device_ops smsc75xx_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 = smsc75xx_change_mtu, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, .ndo_eth_ioctl = smsc75xx_ioctl, .ndo_set_rx_mode = smsc75xx_set_multicast, .ndo_set_features = smsc75xx_set_features, }; static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) { struct smsc75xx_priv *pdata = NULL; int ret; printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); ret = usbnet_get_endpoints(dev, intf); if (ret < 0) { netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); return ret; } dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), GFP_KERNEL); pdata = (struct smsc75xx_priv *)(dev->data[0]); if (!pdata) return -ENOMEM; pdata->dev = dev; spin_lock_init(&pdata->rfe_ctl_lock); mutex_init(&pdata->dataport_mutex); INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); if (DEFAULT_TX_CSUM_ENABLE) dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; if (DEFAULT_RX_CSUM_ENABLE) dev->net->features |= NETIF_F_RXCSUM; dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; ret = smsc75xx_wait_ready(dev, 0); if (ret < 0) { netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); goto free_pdata; } smsc75xx_init_mac_address(dev); /* Init all registers */ ret = smsc75xx_reset(dev); if (ret < 0) { netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); goto cancel_work; } dev->net->netdev_ops = &smsc75xx_netdev_ops; dev->net->ethtool_ops = &smsc75xx_ethtool_ops; dev->net->flags |= IFF_MULTICAST; dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE; return 0; cancel_work: cancel_work_sync(&pdata->set_multicast); free_pdata: kfree(pdata); dev->data[0] = 0; return ret; } static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); if (pdata) { cancel_work_sync(&pdata->set_multicast); netif_dbg(dev, ifdown, dev->net, "free pdata\n"); kfree(pdata); dev->data[0] = 0; } } static u16 smsc_crc(const u8 *buffer, size_t len) { return bitrev16(crc16(0xFFFF, buffer, len)); } static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, u32 wuf_mask1) { int cfg_base = WUF_CFGX + filter * 4; int mask_base = WUF_MASKX + filter * 16; int ret; ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); if (ret < 0) { netdev_warn(dev->net, "Error writing WUF_CFGX\n"); return ret; } ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); if (ret < 0) { netdev_warn(dev->net, "Error writing WUF_MASKX\n"); return ret; } ret = smsc75xx_write_reg(dev, mask_base + 4, 0); if (ret < 0) { netdev_warn(dev->net, "Error writing WUF_MASKX\n"); return ret; } ret = smsc75xx_write_reg(dev, mask_base + 8, 0); if (ret < 0) { netdev_warn(dev->net, "Error writing WUF_MASKX\n"); return ret; } ret = smsc75xx_write_reg(dev, mask_base + 12, 0); if (ret < 0) { netdev_warn(dev->net, "Error writing WUF_MASKX\n"); return ret; } return 0; } static int smsc75xx_enter_suspend0(struct usbnet *dev) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u32 val; int ret; ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); return ret; } val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } pdata->suspend_flags |= SUSPEND_SUSPEND0; return 0; } static int smsc75xx_enter_suspend1(struct usbnet *dev) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u32 val; int ret; ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); return ret; } val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); val |= PMT_CTL_SUS_MODE_1; ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } /* clear wol status, enable energy detection */ val &= ~PMT_CTL_WUPS; val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } pdata->suspend_flags |= SUSPEND_SUSPEND1; return 0; } static int smsc75xx_enter_suspend2(struct usbnet *dev) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u32 val; int ret; ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); return ret; } val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); val |= PMT_CTL_SUS_MODE_2; ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } pdata->suspend_flags |= SUSPEND_SUSPEND2; return 0; } static int smsc75xx_enter_suspend3(struct usbnet *dev) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u32 val; int ret; ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); return ret; } if (val & FCT_RX_CTL_RXUSED) { netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); return -EBUSY; } ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); return ret; } val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } /* clear wol status */ val &= ~PMT_CTL_WUPS; val |= PMT_CTL_WUPS_WOL; ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } pdata->suspend_flags |= SUSPEND_SUSPEND3; return 0; } static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) { struct mii_if_info *mii = &dev->mii; int ret; netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); /* read to clear */ ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); if (ret < 0) { netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); return ret; } /* enable interrupt source */ ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); if (ret < 0) { netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); return ret; } ret |= mask; smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); return 0; } static int smsc75xx_link_ok_nopm(struct usbnet *dev) { struct mii_if_info *mii = &dev->mii; int ret; /* first, a dummy read, needed to latch some MII phys */ ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); if (ret < 0) { netdev_warn(dev->net, "Error reading MII_BMSR\n"); return ret; } ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); if (ret < 0) { netdev_warn(dev->net, "Error reading MII_BMSR\n"); return ret; } return !!(ret & BMSR_LSTATUS); } static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) { int ret; if (!netif_running(dev->net)) { /* interface is ifconfig down so fully power down hw */ netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); return smsc75xx_enter_suspend2(dev); } if (!link_up) { /* link is down so enter EDPD mode */ netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); /* enable PHY wakeup events for if cable is attached */ ret = smsc75xx_enable_phy_wakeup_interrupts(dev, PHY_INT_MASK_ANEG_COMP); if (ret < 0) { netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); return ret; } netdev_info(dev->net, "entering SUSPEND1 mode\n"); return smsc75xx_enter_suspend1(dev); } /* enable PHY wakeup events so we remote wakeup if cable is pulled */ ret = smsc75xx_enable_phy_wakeup_interrupts(dev, PHY_INT_MASK_LINK_DOWN); if (ret < 0) { netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); return ret; } netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); return smsc75xx_enter_suspend3(dev); } static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) { struct usbnet *dev = usb_get_intfdata(intf); struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u32 val, link_up; int ret; ret = usbnet_suspend(intf, message); if (ret < 0) { netdev_warn(dev->net, "usbnet_suspend error\n"); return ret; } if (pdata->suspend_flags) { netdev_warn(dev->net, "error during last resume\n"); pdata->suspend_flags = 0; } /* determine if link is up using only _nopm functions */ link_up = smsc75xx_link_ok_nopm(dev); if (message.event == PM_EVENT_AUTO_SUSPEND) { ret = smsc75xx_autosuspend(dev, link_up); goto done; } /* if we get this far we're not autosuspending */ /* if no wol options set, or if link is down and we're not waking on * PHY activity, enter lowest power SUSPEND2 mode */ if (!(pdata->wolopts & SUPPORTED_WAKE) || !(link_up || (pdata->wolopts & WAKE_PHY))) { netdev_info(dev->net, "entering SUSPEND2 mode\n"); /* disable energy detect (link up) & wake up events */ ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } val &= ~(WUCSR_MPEN | WUCSR_WUEN); ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); goto done; } val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); goto done; } ret = smsc75xx_enter_suspend2(dev); goto done; } if (pdata->wolopts & WAKE_PHY) { ret = smsc75xx_enable_phy_wakeup_interrupts(dev, (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); if (ret < 0) { netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); goto done; } /* if link is down then configure EDPD and enter SUSPEND1, * otherwise enter SUSPEND0 below */ if (!link_up) { struct mii_if_info *mii = &dev->mii; netdev_info(dev->net, "entering SUSPEND1 mode\n"); /* enable energy detect power-down mode */ ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS); if (ret < 0) { netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); goto done; } ret |= MODE_CTRL_STS_EDPWRDOWN; smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret); /* enter SUSPEND1 mode */ ret = smsc75xx_enter_suspend1(dev); goto done; } } if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { int i, filter = 0; /* disable all filters */ for (i = 0; i < WUF_NUM; i++) { ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); if (ret < 0) { netdev_warn(dev->net, "Error writing WUF_CFGX\n"); goto done; } } if (pdata->wolopts & WAKE_MCAST) { const u8 mcast[] = {0x01, 0x00, 0x5E}; netdev_info(dev->net, "enabling multicast detection\n"); val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST | smsc_crc(mcast, 3); ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); if (ret < 0) { netdev_warn(dev->net, "Error writing wakeup filter\n"); goto done; } } if (pdata->wolopts & WAKE_ARP) { const u8 arp[] = {0x08, 0x06}; netdev_info(dev->net, "enabling ARP detection\n"); val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) | smsc_crc(arp, 2); ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); if (ret < 0) { netdev_warn(dev->net, "Error writing wakeup filter\n"); goto done; } } /* clear any pending pattern match packet status */ ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } val |= WUCSR_WUFR; ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } netdev_info(dev->net, "enabling packet match detection\n"); ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } val |= WUCSR_WUEN; ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } } else { netdev_info(dev->net, "disabling packet match detection\n"); ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } val &= ~WUCSR_WUEN; ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } } /* disable magic, bcast & unicast wakeup sources */ ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } if (pdata->wolopts & WAKE_PHY) { netdev_info(dev->net, "enabling PHY wakeup\n"); ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); goto done; } /* clear wol status, enable energy detection */ val &= ~PMT_CTL_WUPS; val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); goto done; } } if (pdata->wolopts & WAKE_MAGIC) { netdev_info(dev->net, "enabling magic packet wakeup\n"); ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } /* clear any pending magic packet status */ val |= WUCSR_MPR | WUCSR_MPEN; ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } } if (pdata->wolopts & WAKE_BCAST) { netdev_info(dev->net, "enabling broadcast detection\n"); ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } } if (pdata->wolopts & WAKE_UCAST) { netdev_info(dev->net, "enabling unicast detection\n"); ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); goto done; } val |= WUCSR_WUFR | WUCSR_PFDA_EN; ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); goto done; } } /* enable receiver to enable frame reception */ ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); if (ret < 0) { netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); goto done; } val |= MAC_RX_RXEN; ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); if (ret < 0) { netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); goto done; } /* some wol options are enabled, so enter SUSPEND0 */ netdev_info(dev->net, "entering SUSPEND0 mode\n"); ret = smsc75xx_enter_suspend0(dev); done: /* * TODO: resume() might need to handle the suspend failure * in system sleep */ if (ret && PMSG_IS_AUTO(message)) usbnet_resume(intf); return ret; } static int smsc75xx_resume(struct usb_interface *intf) { struct usbnet *dev = usb_get_intfdata(intf); struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); u8 suspend_flags = pdata->suspend_flags; int ret; u32 val; netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); /* do this first to ensure it's cleared even in error case */ pdata->suspend_flags = 0; if (suspend_flags & SUSPEND_ALLMODES) { /* Disable wakeup sources */ ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading WUCSR\n"); return ret; } val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN | WUCSR_BCST_EN); ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); if (ret < 0) { netdev_warn(dev->net, "Error writing WUCSR\n"); return ret; } /* clear wake-up status */ ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); return ret; } val &= ~PMT_CTL_WOL_EN; val |= PMT_CTL_WUPS; ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } } if (suspend_flags & SUSPEND_SUSPEND2) { netdev_info(dev->net, "resuming from SUSPEND2\n"); ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); if (ret < 0) { netdev_warn(dev->net, "Error reading PMT_CTL\n"); return ret; } val |= PMT_CTL_PHY_PWRUP; ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); if (ret < 0) { netdev_warn(dev->net, "Error writing PMT_CTL\n"); return ret; } } ret = smsc75xx_wait_ready(dev, 1); if (ret < 0) { netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); return ret; } return usbnet_resume(intf); } static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, u32 rx_cmd_a, u32 rx_cmd_b) { if (!(dev->net->features & NETIF_F_RXCSUM) || unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { skb->ip_summed = CHECKSUM_NONE; } else { skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); skb->ip_summed = CHECKSUM_COMPLETE; } } static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { /* This check is no longer done by usbnet */ if (skb->len < dev->net->hard_header_len) return 0; while (skb->len > 0) { u32 rx_cmd_a, rx_cmd_b, align_count, size; struct sk_buff *ax_skb; unsigned char *packet; rx_cmd_a = get_unaligned_le32(skb->data); skb_pull(skb, 4); rx_cmd_b = get_unaligned_le32(skb->data); skb_pull(skb, 4 + RXW_PADDING); packet = skb->data; /* get the packet length */ size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; if (unlikely(size > skb->len)) { netif_dbg(dev, rx_err, dev->net, "size err rx_cmd_a=0x%08x\n", rx_cmd_a); return 0; } if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { netif_dbg(dev, rx_err, dev->net, "Error rx_cmd_a=0x%08x\n", rx_cmd_a); dev->net->stats.rx_errors++; dev->net->stats.rx_dropped++; if (rx_cmd_a & RX_CMD_A_FCS) dev->net->stats.rx_crc_errors++; else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) dev->net->stats.rx_frame_errors++; } else { /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { netif_dbg(dev, rx_err, dev->net, "size err rx_cmd_a=0x%08x\n", rx_cmd_a); return 0; } /* last frame in this batch */ if (skb->len == size) { smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, rx_cmd_b); skb_trim(skb, skb->len - 4); /* remove fcs */ return 1; } /* Use "size - 4" to remove fcs */ ax_skb = netdev_alloc_skb_ip_align(dev->net, size - 4); if (unlikely(!ax_skb)) { netdev_warn(dev->net, "Error allocating skb\n"); return 0; } skb_put(ax_skb, size - 4); memcpy(ax_skb->data, packet, size - 4); smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, rx_cmd_b); usbnet_skb_return(dev, ax_skb); } skb_pull(skb, size); /* padding bytes before the next frame starts */ if (skb->len) skb_pull(skb, align_count); } return 1; } static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { u32 tx_cmd_a, tx_cmd_b; void *ptr; if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) { dev_kfree_skb_any(skb); return NULL; } tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; if (skb->ip_summed == CHECKSUM_PARTIAL) tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; if (skb_is_gso(skb)) { u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; tx_cmd_a |= TX_CMD_A_LSO; } else { tx_cmd_b = 0; } ptr = skb_push(skb, 8); put_unaligned_le32(tx_cmd_a, ptr); put_unaligned_le32(tx_cmd_b, ptr + 4); return skb; } static int smsc75xx_manage_power(struct usbnet *dev, int on) { dev->intf->needs_remote_wakeup = on; return 0; } static const struct driver_info smsc75xx_info = { .description = "smsc75xx USB 2.0 Gigabit Ethernet", .bind = smsc75xx_bind, .unbind = smsc75xx_unbind, .link_reset = smsc75xx_link_reset, .reset = smsc75xx_reset, .rx_fixup = smsc75xx_rx_fixup, .tx_fixup = smsc75xx_tx_fixup, .status = smsc75xx_status, .manage_power = smsc75xx_manage_power, .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, }; static const struct usb_device_id products[] = { { /* SMSC7500 USB Gigabit Ethernet Device */ USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), .driver_info = (unsigned long) &smsc75xx_info, }, { /* SMSC7500 USB Gigabit Ethernet Device */ USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), .driver_info = (unsigned long) &smsc75xx_info, }, { }, /* END */ }; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver smsc75xx_driver = { .name = SMSC_CHIPNAME, .id_table = products, .probe = usbnet_probe, .suspend = smsc75xx_suspend, .resume = smsc75xx_resume, .reset_resume = smsc75xx_resume, .disconnect = usbnet_disconnect, .disable_hub_initiated_lpm = 1, .supports_autosuspend = 1, }; module_usb_driver(smsc75xx_driver); MODULE_AUTHOR("Nancy Lin"); MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); MODULE_LICENSE("GPL"); |
| 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 | /* SPDX-License-Identifier: GPL-2.0 */ /* * thermal.h ($Revision: 0 $) * * Copyright (C) 2008 Intel Corp * Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com> * Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com> */ #ifndef __THERMAL_H__ #define __THERMAL_H__ #include <linux/of.h> #include <linux/idr.h> #include <linux/device.h> #include <linux/sysfs.h> #include <linux/workqueue.h> #include <uapi/linux/thermal.h> /* invalid cooling state */ #define THERMAL_CSTATE_INVALID -1UL /* No upper/lower limit requirement */ #define THERMAL_NO_LIMIT ((u32)~0) /* Default weight of a bound cooling device */ #define THERMAL_WEIGHT_DEFAULT 0 /* use value, which < 0K, to indicate an invalid/uninitialized temperature */ #define THERMAL_TEMP_INVALID -274000 struct thermal_zone_device; struct thermal_cooling_device; struct thermal_instance; struct thermal_debugfs; struct thermal_attr; enum thermal_trend { THERMAL_TREND_STABLE, /* temperature is stable */ THERMAL_TREND_RAISING, /* temperature is raising */ THERMAL_TREND_DROPPING, /* temperature is dropping */ }; /* Thermal notification reason */ enum thermal_notify_event { THERMAL_EVENT_UNSPECIFIED, /* Unspecified event */ THERMAL_EVENT_TEMP_SAMPLE, /* New Temperature sample */ THERMAL_TRIP_VIOLATED, /* TRIP Point violation */ THERMAL_TRIP_CHANGED, /* TRIP Point temperature changed */ THERMAL_DEVICE_DOWN, /* Thermal device is down */ THERMAL_DEVICE_UP, /* Thermal device is up after a down event */ THERMAL_DEVICE_POWER_CAPABILITY_CHANGED, /* power capability changed */ THERMAL_TABLE_CHANGED, /* Thermal table(s) changed */ THERMAL_EVENT_KEEP_ALIVE, /* Request for user space handler to respond */ THERMAL_TZ_BIND_CDEV, /* Cooling dev is bind to the thermal zone */ THERMAL_TZ_UNBIND_CDEV, /* Cooling dev is unbind from the thermal zone */ THERMAL_INSTANCE_WEIGHT_CHANGED, /* Thermal instance weight changed */ THERMAL_TZ_RESUME, /* Thermal zone is resuming after system sleep */ THERMAL_TZ_ADD_THRESHOLD, /* Threshold added */ THERMAL_TZ_DEL_THRESHOLD, /* Threshold deleted */ THERMAL_TZ_FLUSH_THRESHOLDS, /* All thresholds deleted */ }; /** * struct thermal_trip - representation of a point in temperature domain * @temperature: temperature value in miliCelsius * @hysteresis: relative hysteresis in miliCelsius * @type: trip point type * @priv: pointer to driver data associated with this trip * @flags: flags representing binary properties of the trip */ struct thermal_trip { int temperature; int hysteresis; enum thermal_trip_type type; u8 flags; void *priv; }; #define THERMAL_TRIP_FLAG_RW_TEMP BIT(0) #define THERMAL_TRIP_FLAG_RW_HYST BIT(1) #define THERMAL_TRIP_FLAG_RW (THERMAL_TRIP_FLAG_RW_TEMP | \ THERMAL_TRIP_FLAG_RW_HYST) #define THERMAL_TRIP_PRIV_TO_INT(_val_) (uintptr_t)(_val_) #define THERMAL_INT_TO_TRIP_PRIV(_val_) (void *)(uintptr_t)(_val_) struct cooling_spec { unsigned long upper; /* Highest cooling state */ unsigned long lower; /* Lowest cooling state */ unsigned int weight; /* Cooling device weight */ }; struct thermal_zone_device_ops { bool (*should_bind) (struct thermal_zone_device *, const struct thermal_trip *, struct thermal_cooling_device *, struct cooling_spec *); int (*get_temp) (struct thermal_zone_device *, int *); int (*set_trips) (struct thermal_zone_device *, int, int); int (*change_mode) (struct thermal_zone_device *, enum thermal_device_mode); int (*set_trip_temp) (struct thermal_zone_device *, const struct thermal_trip *, int); int (*get_crit_temp) (struct thermal_zone_device *, int *); int (*set_emul_temp) (struct thermal_zone_device *, int); int (*get_trend) (struct thermal_zone_device *, const struct thermal_trip *, enum thermal_trend *); void (*hot)(struct thermal_zone_device *); void (*critical)(struct thermal_zone_device *); }; struct thermal_cooling_device_ops { int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); int (*get_requested_power)(struct thermal_cooling_device *, u32 *); int (*state2power)(struct thermal_cooling_device *, unsigned long, u32 *); int (*power2state)(struct thermal_cooling_device *, u32, unsigned long *); }; struct thermal_cooling_device { int id; const char *type; unsigned long max_state; struct device device; struct device_node *np; void *devdata; void *stats; const struct thermal_cooling_device_ops *ops; bool updated; /* true if the cooling device does not need update */ struct mutex lock; /* protect thermal_instances list */ struct list_head thermal_instances; struct list_head node; #ifdef CONFIG_THERMAL_DEBUGFS struct thermal_debugfs *debugfs; #endif }; DEFINE_GUARD(cooling_dev, struct thermal_cooling_device *, mutex_lock(&_T->lock), mutex_unlock(&_T->lock)) /* Structure to define Thermal Zone parameters */ struct thermal_zone_params { const char *governor_name; /* * a boolean to indicate if the thermal to hwmon sysfs interface * is required. when no_hwmon == false, a hwmon sysfs interface * will be created. when no_hwmon == true, nothing will be done */ bool no_hwmon; /* * Sustainable power (heat) that this thermal zone can dissipate in * mW */ u32 sustainable_power; /* * Proportional parameter of the PID controller when * overshooting (i.e., when temperature is below the target) */ s32 k_po; /* * Proportional parameter of the PID controller when * undershooting */ s32 k_pu; /* Integral parameter of the PID controller */ s32 k_i; /* Derivative parameter of the PID controller */ s32 k_d; /* threshold below which the error is no longer accumulated */ s32 integral_cutoff; /* * @slope: slope of a linear temperature adjustment curve. * Used by thermal zone drivers. */ int slope; /* * @offset: offset of a linear temperature adjustment curve. * Used by thermal zone drivers (default 0). */ int offset; }; /* Function declarations */ #ifdef CONFIG_THERMAL_OF struct thermal_zone_device *devm_thermal_of_zone_register(struct device *dev, int id, void *data, const struct thermal_zone_device_ops *ops); void devm_thermal_of_zone_unregister(struct device *dev, struct thermal_zone_device *tz); #else static inline struct thermal_zone_device *devm_thermal_of_zone_register(struct device *dev, int id, void *data, const struct thermal_zone_device_ops *ops) { return ERR_PTR(-ENOTSUPP); } static inline void devm_thermal_of_zone_unregister(struct device *dev, struct thermal_zone_device *tz) { } #endif int for_each_thermal_trip(struct thermal_zone_device *tz, int (*cb)(struct thermal_trip *, void *), void *data); int thermal_zone_for_each_trip(struct thermal_zone_device *tz, int (*cb)(struct thermal_trip *, void *), void *data); void thermal_zone_set_trip_temp(struct thermal_zone_device *tz, struct thermal_trip *trip, int temp); int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp); #ifdef CONFIG_THERMAL struct thermal_zone_device *thermal_zone_device_register_with_trips( const char *type, const struct thermal_trip *trips, int num_trips, void *devdata, const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, unsigned int passive_delay, unsigned int polling_delay); struct thermal_zone_device *thermal_tripless_zone_device_register( const char *type, void *devdata, const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp); void thermal_zone_device_unregister(struct thermal_zone_device *tz); void *thermal_zone_device_priv(struct thermal_zone_device *tzd); const char *thermal_zone_device_type(struct thermal_zone_device *tzd); int thermal_zone_device_id(struct thermal_zone_device *tzd); struct device *thermal_zone_device(struct thermal_zone_device *tzd); void thermal_zone_device_update(struct thermal_zone_device *, enum thermal_notify_event); struct thermal_cooling_device *thermal_cooling_device_register(const char *, void *, const struct thermal_cooling_device_ops *); struct thermal_cooling_device * thermal_of_cooling_device_register(struct device_node *np, const char *, void *, const struct thermal_cooling_device_ops *); struct thermal_cooling_device * devm_thermal_of_cooling_device_register(struct device *dev, struct device_node *np, const char *type, void *devdata, const struct thermal_cooling_device_ops *ops); void thermal_cooling_device_update(struct thermal_cooling_device *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name); int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp); int thermal_zone_get_slope(struct thermal_zone_device *tz); int thermal_zone_get_offset(struct thermal_zone_device *tz); bool thermal_trip_is_bound_to_cdev(struct thermal_zone_device *tz, const struct thermal_trip *trip, struct thermal_cooling_device *cdev); int thermal_zone_device_enable(struct thermal_zone_device *tz); int thermal_zone_device_disable(struct thermal_zone_device *tz); void thermal_zone_device_critical(struct thermal_zone_device *tz); #else static inline struct thermal_zone_device *thermal_zone_device_register_with_trips( const char *type, const struct thermal_trip *trips, int num_trips, void *devdata, const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, int passive_delay, int polling_delay) { return ERR_PTR(-ENODEV); } static inline struct thermal_zone_device *thermal_tripless_zone_device_register( const char *type, void *devdata, struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp) { return ERR_PTR(-ENODEV); } static inline void thermal_zone_device_unregister(struct thermal_zone_device *tz) { } static inline void thermal_zone_device_update(struct thermal_zone_device *tz, enum thermal_notify_event event) { } static inline struct thermal_cooling_device * thermal_cooling_device_register(const char *type, void *devdata, const struct thermal_cooling_device_ops *ops) { return ERR_PTR(-ENODEV); } static inline struct thermal_cooling_device * thermal_of_cooling_device_register(struct device_node *np, const char *type, void *devdata, const struct thermal_cooling_device_ops *ops) { return ERR_PTR(-ENODEV); } static inline struct thermal_cooling_device * devm_thermal_of_cooling_device_register(struct device *dev, struct device_node *np, const char *type, void *devdata, const struct thermal_cooling_device_ops *ops) { return ERR_PTR(-ENODEV); } static inline void thermal_cooling_device_unregister( struct thermal_cooling_device *cdev) { } static inline struct thermal_zone_device *thermal_zone_get_zone_by_name( const char *name) { return ERR_PTR(-ENODEV); } static inline int thermal_zone_get_temp( struct thermal_zone_device *tz, int *temp) { return -ENODEV; } static inline int thermal_zone_get_slope( struct thermal_zone_device *tz) { return -ENODEV; } static inline int thermal_zone_get_offset( struct thermal_zone_device *tz) { return -ENODEV; } static inline void *thermal_zone_device_priv(struct thermal_zone_device *tz) { return NULL; } static inline const char *thermal_zone_device_type(struct thermal_zone_device *tzd) { return NULL; } static inline int thermal_zone_device_id(struct thermal_zone_device *tzd) { return -ENODEV; } static inline int thermal_zone_device_enable(struct thermal_zone_device *tz) { return -ENODEV; } static inline int thermal_zone_device_disable(struct thermal_zone_device *tz) { return -ENODEV; } #endif /* CONFIG_THERMAL */ #endif /* __THERMAL_H__ */ |
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Jeilinj subdriver * * Supports some Jeilin dual-mode cameras which use bulk transport and * download raw JPEG data. * * Copyright (C) 2009 Theodore Kilgore * * Sportscam DV15 support and control settings are * Copyright (C) 2011 Patrice Chotard */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "jeilinj" #include <linux/slab.h> #include "gspca.h" #include "jpeg.h" MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>"); MODULE_DESCRIPTION("GSPCA/JEILINJ USB Camera Driver"); MODULE_LICENSE("GPL"); /* Default timeouts, in ms */ #define JEILINJ_CMD_TIMEOUT 500 #define JEILINJ_CMD_DELAY 160 #define JEILINJ_DATA_TIMEOUT 1000 /* Maximum transfer size to use. */ #define JEILINJ_MAX_TRANSFER 0x200 #define FRAME_HEADER_LEN 0x10 #define FRAME_START 0xFFFFFFFF enum { SAKAR_57379, SPORTSCAM_DV15, }; #define CAMQUALITY_MIN 0 /* highest cam quality */ #define CAMQUALITY_MAX 97 /* lowest cam quality */ /* Structure to hold all of our device specific stuff */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ int blocks_left; const struct v4l2_pix_format *cap_mode; struct v4l2_ctrl *freq; struct v4l2_ctrl *jpegqual; /* Driver stuff */ u8 type; u8 quality; /* image quality */ #define QUALITY_MIN 35 #define QUALITY_MAX 85 #define QUALITY_DEF 85 u8 jpeg_hdr[JPEG_HDR_SZ]; }; struct jlj_command { unsigned char instruction[2]; unsigned char ack_wanted; unsigned char delay; }; /* AFAICT these cameras will only do 320x240. */ static struct v4l2_pix_format jlj_mode[] = { { 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, { 640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0} }; /* * cam uses endpoint 0x03 to send commands, 0x84 for read commands, * and 0x82 for bulk transfer. */ /* All commands are two bytes only */ static void jlj_write2(struct gspca_dev *gspca_dev, unsigned char *command) { int retval; if (gspca_dev->usb_err < 0) return; memcpy(gspca_dev->usb_buf, command, 2); retval = usb_bulk_msg(gspca_dev->dev, usb_sndbulkpipe(gspca_dev->dev, 3), gspca_dev->usb_buf, 2, NULL, 500); if (retval < 0) { pr_err("command write [%02x] error %d\n", gspca_dev->usb_buf[0], retval); gspca_dev->usb_err = retval; } } /* Responses are one byte only */ static void jlj_read1(struct gspca_dev *gspca_dev, unsigned char *response) { int retval; if (gspca_dev->usb_err < 0) return; retval = usb_bulk_msg(gspca_dev->dev, usb_rcvbulkpipe(gspca_dev->dev, 0x84), gspca_dev->usb_buf, 1, NULL, 500); *response = gspca_dev->usb_buf[0]; if (retval < 0) { pr_err("read command [%02x] error %d\n", gspca_dev->usb_buf[0], retval); gspca_dev->usb_err = retval; } } static void setfreq(struct gspca_dev *gspca_dev, s32 val) { u8 freq_commands[][2] = { {0x71, 0x80}, {0x70, 0x07} }; freq_commands[0][1] |= val >> 1; jlj_write2(gspca_dev, freq_commands[0]); jlj_write2(gspca_dev, freq_commands[1]); } static void setcamquality(struct gspca_dev *gspca_dev, s32 val) { u8 quality_commands[][2] = { {0x71, 0x1E}, {0x70, 0x06} }; u8 camquality; /* adapt camera quality from jpeg quality */ camquality = ((QUALITY_MAX - val) * CAMQUALITY_MAX) / (QUALITY_MAX - QUALITY_MIN); quality_commands[0][1] += camquality; jlj_write2(gspca_dev, quality_commands[0]); jlj_write2(gspca_dev, quality_commands[1]); } static void setautogain(struct gspca_dev *gspca_dev, s32 val) { u8 autogain_commands[][2] = { {0x94, 0x02}, {0xcf, 0x00} }; autogain_commands[1][1] = val << 4; jlj_write2(gspca_dev, autogain_commands[0]); jlj_write2(gspca_dev, autogain_commands[1]); } static void setred(struct gspca_dev *gspca_dev, s32 val) { u8 setred_commands[][2] = { {0x94, 0x02}, {0xe6, 0x00} }; setred_commands[1][1] = val; jlj_write2(gspca_dev, setred_commands[0]); jlj_write2(gspca_dev, setred_commands[1]); } static void setgreen(struct gspca_dev *gspca_dev, s32 val) { u8 setgreen_commands[][2] = { {0x94, 0x02}, {0xe7, 0x00} }; setgreen_commands[1][1] = val; jlj_write2(gspca_dev, setgreen_commands[0]); jlj_write2(gspca_dev, setgreen_commands[1]); } static void setblue(struct gspca_dev *gspca_dev, s32 val) { u8 setblue_commands[][2] = { {0x94, 0x02}, {0xe9, 0x00} }; setblue_commands[1][1] = val; jlj_write2(gspca_dev, setblue_commands[0]); jlj_write2(gspca_dev, setblue_commands[1]); } static int jlj_start(struct gspca_dev *gspca_dev) { int i; int start_commands_size; u8 response = 0xff; struct sd *sd = (struct sd *) gspca_dev; struct jlj_command start_commands[] = { {{0x71, 0x81}, 0, 0}, {{0x70, 0x05}, 0, JEILINJ_CMD_DELAY}, {{0x95, 0x70}, 1, 0}, {{0x71, 0x81 - gspca_dev->curr_mode}, 0, 0}, {{0x70, 0x04}, 0, JEILINJ_CMD_DELAY}, {{0x95, 0x70}, 1, 0}, {{0x71, 0x00}, 0, 0}, /* start streaming ??*/ {{0x70, 0x08}, 0, JEILINJ_CMD_DELAY}, {{0x95, 0x70}, 1, 0}, #define SPORTSCAM_DV15_CMD_SIZE 9 {{0x94, 0x02}, 0, 0}, {{0xde, 0x24}, 0, 0}, {{0x94, 0x02}, 0, 0}, {{0xdd, 0xf0}, 0, 0}, {{0x94, 0x02}, 0, 0}, {{0xe3, 0x2c}, 0, 0}, {{0x94, 0x02}, 0, 0}, {{0xe4, 0x00}, 0, 0}, {{0x94, 0x02}, 0, 0}, {{0xe5, 0x00}, 0, 0}, {{0x94, 0x02}, 0, 0}, {{0xe6, 0x2c}, 0, 0}, {{0x94, 0x03}, 0, 0}, {{0xaa, 0x00}, 0, 0} }; sd->blocks_left = 0; /* Under Windows, USB spy shows that only the 9 first start * commands are used for SPORTSCAM_DV15 webcam */ if (sd->type == SPORTSCAM_DV15) start_commands_size = SPORTSCAM_DV15_CMD_SIZE; else start_commands_size = ARRAY_SIZE(start_commands); for (i = 0; i < start_commands_size; i++) { jlj_write2(gspca_dev, start_commands[i].instruction); if (start_commands[i].delay) msleep(start_commands[i].delay); if (start_commands[i].ack_wanted) jlj_read1(gspca_dev, &response); } setcamquality(gspca_dev, v4l2_ctrl_g_ctrl(sd->jpegqual)); msleep(2); setfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->freq)); if (gspca_dev->usb_err < 0) gspca_err(gspca_dev, "Start streaming command failed\n"); return gspca_dev->usb_err; } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len) { struct sd *sd = (struct sd *) gspca_dev; int packet_type; u32 header_marker; gspca_dbg(gspca_dev, D_STREAM, "Got %d bytes out of %d for Block 0\n", len, JEILINJ_MAX_TRANSFER); if (len != JEILINJ_MAX_TRANSFER) { gspca_dbg(gspca_dev, D_PACK, "bad length\n"); goto discard; } /* check if it's start of frame */ header_marker = ((u32 *)data)[0]; if (header_marker == FRAME_START) { sd->blocks_left = data[0x0a] - 1; gspca_dbg(gspca_dev, D_STREAM, "blocks_left = 0x%x\n", sd->blocks_left); /* Start a new frame, and add the JPEG header, first thing */ gspca_frame_add(gspca_dev, FIRST_PACKET, sd->jpeg_hdr, JPEG_HDR_SZ); /* Toss line 0 of data block 0, keep the rest. */ gspca_frame_add(gspca_dev, INTER_PACKET, data + FRAME_HEADER_LEN, JEILINJ_MAX_TRANSFER - FRAME_HEADER_LEN); } else if (sd->blocks_left > 0) { gspca_dbg(gspca_dev, D_STREAM, "%d blocks remaining for frame\n", sd->blocks_left); sd->blocks_left -= 1; if (sd->blocks_left == 0) packet_type = LAST_PACKET; else packet_type = INTER_PACKET; gspca_frame_add(gspca_dev, packet_type, data, JEILINJ_MAX_TRANSFER); } else goto discard; return; discard: /* Discard data until a new frame starts. */ gspca_dev->last_packet_type = DISCARD_PACKET; } /* This function is called at probe time just before sd_init */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct cam *cam = &gspca_dev->cam; struct sd *dev = (struct sd *) gspca_dev; dev->type = id->driver_info; dev->quality = QUALITY_DEF; cam->cam_mode = jlj_mode; cam->nmodes = ARRAY_SIZE(jlj_mode); cam->bulk = 1; cam->bulk_nurbs = 1; cam->bulk_size = JEILINJ_MAX_TRANSFER; return 0; } static void sd_stopN(struct gspca_dev *gspca_dev) { int i; u8 *buf; static u8 stop_commands[][2] = { {0x71, 0x00}, {0x70, 0x09}, {0x71, 0x80}, {0x70, 0x05} }; for (;;) { /* get the image remaining blocks */ usb_bulk_msg(gspca_dev->dev, gspca_dev->urb[0]->pipe, gspca_dev->urb[0]->transfer_buffer, JEILINJ_MAX_TRANSFER, NULL, JEILINJ_DATA_TIMEOUT); /* search for 0xff 0xd9 (EOF for JPEG) */ i = 0; buf = gspca_dev->urb[0]->transfer_buffer; while ((i < (JEILINJ_MAX_TRANSFER - 1)) && ((buf[i] != 0xff) || (buf[i+1] != 0xd9))) i++; if (i != (JEILINJ_MAX_TRANSFER - 1)) /* last remaining block found */ break; } for (i = 0; i < ARRAY_SIZE(stop_commands); i++) jlj_write2(gspca_dev, stop_commands[i]); } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { return gspca_dev->usb_err; } /* Set up for getting frames. */ static int sd_start(struct gspca_dev *gspca_dev) { struct sd *dev = (struct sd *) gspca_dev; /* create the JPEG header */ jpeg_define(dev->jpeg_hdr, gspca_dev->pixfmt.height, gspca_dev->pixfmt.width, 0x21); /* JPEG 422 */ jpeg_set_qual(dev->jpeg_hdr, dev->quality); gspca_dbg(gspca_dev, D_STREAM, "Start streaming at %dx%d\n", gspca_dev->pixfmt.height, gspca_dev->pixfmt.width); jlj_start(gspca_dev); return gspca_dev->usb_err; } /* Table of supported USB devices */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x0979, 0x0280), .driver_info = SAKAR_57379}, {USB_DEVICE(0x0979, 0x0270), .driver_info = SPORTSCAM_DV15}, {} }; MODULE_DEVICE_TABLE(usb, device_table); 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_POWER_LINE_FREQUENCY: setfreq(gspca_dev, ctrl->val); break; case V4L2_CID_RED_BALANCE: setred(gspca_dev, ctrl->val); break; case V4L2_CID_GAIN: setgreen(gspca_dev, ctrl->val); break; case V4L2_CID_BLUE_BALANCE: setblue(gspca_dev, ctrl->val); break; case V4L2_CID_AUTOGAIN: setautogain(gspca_dev, ctrl->val); break; case V4L2_CID_JPEG_COMPRESSION_QUALITY: jpeg_set_qual(sd->jpeg_hdr, ctrl->val); setcamquality(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; static const struct v4l2_ctrl_config custom_autogain = { .ops = &sd_ctrl_ops, .id = V4L2_CID_AUTOGAIN, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Automatic Gain (and Exposure)", .max = 3, .step = 1, .def = 0, }; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 6); sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, V4L2_CID_POWER_LINE_FREQUENCY, V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1, V4L2_CID_POWER_LINE_FREQUENCY_60HZ); v4l2_ctrl_new_custom(hdl, &custom_autogain, NULL); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_RED_BALANCE, 0, 3, 1, 2); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN, 0, 3, 1, 2); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BLUE_BALANCE, 0, 3, 1, 2); sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_JPEG_COMPRESSION_QUALITY, QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } return 0; } static int sd_set_jcomp(struct gspca_dev *gspca_dev, const struct v4l2_jpegcompression *jcomp) { struct sd *sd = (struct sd *) gspca_dev; v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality); return 0; } static int sd_get_jcomp(struct gspca_dev *gspca_dev, struct v4l2_jpegcompression *jcomp) { struct sd *sd = (struct sd *) gspca_dev; memset(jcomp, 0, sizeof *jcomp); jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual); jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT | V4L2_JPEG_MARKER_DQT; return 0; } /* sub-driver description */ static const struct sd_desc sd_desc_sakar_57379 = { .name = MODULE_NAME, .config = sd_config, .init = sd_init, .start = sd_start, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan, }; /* sub-driver description */ static const struct sd_desc sd_desc_sportscam_dv15 = { .name = MODULE_NAME, .config = sd_config, .init = sd_init, .init_controls = sd_init_controls, .start = sd_start, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan, .get_jcomp = sd_get_jcomp, .set_jcomp = sd_set_jcomp, }; static const struct sd_desc *sd_desc[2] = { &sd_desc_sakar_57379, &sd_desc_sportscam_dv15 }; /* -- 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); |
| 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 | // SPDX-License-Identifier: ISC /* * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> */ #include <linux/kernel.h> #include <linux/module.h> #include "../mt76x02_usb.h" #include "mt76x2u.h" static const struct usb_device_id mt76x2u_device_table[] = { { USB_DEVICE(0x0b05, 0x1833) }, /* Asus USB-AC54 */ { USB_DEVICE(0x0b05, 0x17eb) }, /* Asus USB-AC55 */ { USB_DEVICE(0x0b05, 0x180b) }, /* Asus USB-N53 B1 */ { USB_DEVICE(0x0e8d, 0x7612) }, /* Aukey USBAC1200 - Alfa AWUS036ACM */ { USB_DEVICE(0x057c, 0x8503) }, /* Avm FRITZ!WLAN AC860 */ { USB_DEVICE(0x7392, 0xb711) }, /* Edimax EW 7722 UAC */ { USB_DEVICE(0x0e8d, 0x7632) }, /* HC-M7662BU1 */ { USB_DEVICE(0x2c4e, 0x0103) }, /* Mercury UD13 */ { USB_DEVICE(0x0846, 0x9014) }, /* Netgear WNDA3100v3 */ { USB_DEVICE(0x0846, 0x9053) }, /* Netgear A6210 */ { USB_DEVICE(0x045e, 0x02e6) }, /* XBox One Wireless Adapter */ { USB_DEVICE(0x045e, 0x02fe) }, /* XBox One Wireless Adapter */ { USB_DEVICE(0x2357, 0x0137) }, /* TP-Link TL-WDN6200 */ { }, }; static int mt76x2u_probe(struct usb_interface *intf, const struct usb_device_id *id) { static const struct mt76_driver_ops drv_ops = { .drv_flags = MT_DRV_SW_RX_AIRTIME | MT_DRV_IGNORE_TXS_FAILED, .survey_flags = SURVEY_INFO_TIME_TX, .update_survey = mt76x02_update_channel, .set_channel = mt76x2u_set_channel, .tx_prepare_skb = mt76x02u_tx_prepare_skb, .tx_complete_skb = mt76x02u_tx_complete_skb, .tx_status_data = mt76x02_tx_status_data, .rx_skb = mt76x02_queue_rx_skb, .sta_ps = mt76x02_sta_ps, .sta_add = mt76x02_sta_add, .sta_remove = mt76x02_sta_remove, }; struct usb_device *udev = interface_to_usbdev(intf); struct mt76x02_dev *dev; struct mt76_dev *mdev; int err; mdev = mt76_alloc_device(&intf->dev, sizeof(*dev), &mt76x2u_ops, &drv_ops); if (!mdev) return -ENOMEM; dev = container_of(mdev, struct mt76x02_dev, mt76); udev = usb_get_dev(udev); usb_reset_device(udev); usb_set_intfdata(intf, dev); mt76x02u_init_mcu(mdev); err = mt76u_init(mdev, intf); if (err < 0) goto err; mdev->rev = mt76_rr(dev, MT_ASIC_VERSION); dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev); if (!is_mt76x2(dev)) { err = -ENODEV; goto err; } err = mt76x2u_register_device(dev); if (err < 0) goto err; return 0; err: mt76u_queues_deinit(&dev->mt76); mt76_free_device(&dev->mt76); usb_set_intfdata(intf, NULL); usb_put_dev(udev); return err; } static void mt76x2u_disconnect(struct usb_interface *intf) { struct usb_device *udev = interface_to_usbdev(intf); struct mt76x02_dev *dev = usb_get_intfdata(intf); struct ieee80211_hw *hw = mt76_hw(dev); set_bit(MT76_REMOVED, &dev->mphy.state); ieee80211_unregister_hw(hw); mt76x2u_cleanup(dev); mt76_free_device(&dev->mt76); usb_set_intfdata(intf, NULL); usb_put_dev(udev); } static int __maybe_unused mt76x2u_suspend(struct usb_interface *intf, pm_message_t state) { struct mt76x02_dev *dev = usb_get_intfdata(intf); mt76u_stop_rx(&dev->mt76); return 0; } static int __maybe_unused mt76x2u_resume(struct usb_interface *intf) { struct mt76x02_dev *dev = usb_get_intfdata(intf); int err; err = mt76u_resume_rx(&dev->mt76); if (err < 0) goto err; err = mt76x2u_init_hardware(dev); if (err < 0) goto err; return 0; err: mt76x2u_cleanup(dev); return err; } MODULE_DEVICE_TABLE(usb, mt76x2u_device_table); MODULE_FIRMWARE(MT7662_FIRMWARE); MODULE_FIRMWARE(MT7662_ROM_PATCH); static struct usb_driver mt76x2u_driver = { .name = KBUILD_MODNAME, .id_table = mt76x2u_device_table, .probe = mt76x2u_probe, .disconnect = mt76x2u_disconnect, #ifdef CONFIG_PM .suspend = mt76x2u_suspend, .resume = mt76x2u_resume, .reset_resume = mt76x2u_resume, #endif /* CONFIG_PM */ .soft_unbind = 1, .disable_hub_initiated_lpm = 1, }; module_usb_driver(mt76x2u_driver); MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>"); MODULE_DESCRIPTION("MediaTek MT76x2U (USB) wireless driver"); MODULE_LICENSE("Dual BSD/GPL"); |
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7072 7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099 7100 | // 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. * * Routing netlink socket interface: protocol independent part. * * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> * * Fixes: * Vitaly E. Lavrov RTA_OK arithmetic was wrong. */ #include <linux/bitops.h> #include <linux/errno.h> #include <linux/module.h> #include <linux/types.h> #include <linux/socket.h> #include <linux/kernel.h> #include <linux/timer.h> #include <linux/string.h> #include <linux/sockios.h> #include <linux/net.h> #include <linux/fcntl.h> #include <linux/mm.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/capability.h> #include <linux/skbuff.h> #include <linux/init.h> #include <linux/security.h> #include <linux/mutex.h> #include <linux/if_addr.h> #include <linux/if_bridge.h> #include <linux/if_vlan.h> #include <linux/pci.h> #include <linux/etherdevice.h> #include <linux/bpf.h> #include <linux/uaccess.h> #include <linux/inet.h> #include <linux/netdevice.h> #include <net/ip.h> #include <net/protocol.h> #include <net/arp.h> #include <net/route.h> #include <net/udp.h> #include <net/tcp.h> #include <net/sock.h> #include <net/pkt_sched.h> #include <net/fib_rules.h> #include <net/rtnetlink.h> #include <net/net_namespace.h> #include <net/netdev_lock.h> #include <net/devlink.h> #if IS_ENABLED(CONFIG_IPV6) #include <net/addrconf.h> #endif #include <linux/dpll.h> #include "dev.h" #define RTNL_MAX_TYPE 50 #define RTNL_SLAVE_MAX_TYPE 44 struct rtnl_link { rtnl_doit_func doit; rtnl_dumpit_func dumpit; struct module *owner; unsigned int flags; struct rcu_head rcu; }; static DEFINE_MUTEX(rtnl_mutex); void rtnl_lock(void) { mutex_lock(&rtnl_mutex); } EXPORT_SYMBOL(rtnl_lock); int rtnl_lock_interruptible(void) { return mutex_lock_interruptible(&rtnl_mutex); } int rtnl_lock_killable(void) { return mutex_lock_killable(&rtnl_mutex); } static struct sk_buff *defer_kfree_skb_list; void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail) { if (head && tail) { tail->next = defer_kfree_skb_list; defer_kfree_skb_list = head; } } EXPORT_SYMBOL(rtnl_kfree_skbs); void __rtnl_unlock(void) { struct sk_buff *head = defer_kfree_skb_list; defer_kfree_skb_list = NULL; /* Ensure that we didn't actually add any TODO item when __rtnl_unlock() * is used. In some places, e.g. in cfg80211, we have code that will do * something like * rtnl_lock() * wiphy_lock() * ... * rtnl_unlock() * * and because netdev_run_todo() acquires the RTNL for items on the list * we could cause a situation such as this: * Thread 1 Thread 2 * rtnl_lock() * unregister_netdevice() * __rtnl_unlock() * rtnl_lock() * wiphy_lock() * rtnl_unlock() * netdev_run_todo() * __rtnl_unlock() * * // list not empty now * // because of thread 2 * rtnl_lock() * while (!list_empty(...)) * rtnl_lock() * wiphy_lock() * **** DEADLOCK **** * * However, usage of __rtnl_unlock() is rare, and so we can ensure that * it's not used in cases where something is added to do the list. */ WARN_ON(!list_empty(&net_todo_list)); mutex_unlock(&rtnl_mutex); while (head) { struct sk_buff *next = head->next; kfree_skb(head); cond_resched(); head = next; } } void rtnl_unlock(void) { /* This fellow will unlock it for us. */ netdev_run_todo(); } EXPORT_SYMBOL(rtnl_unlock); int rtnl_trylock(void) { return mutex_trylock(&rtnl_mutex); } EXPORT_SYMBOL(rtnl_trylock); int rtnl_is_locked(void) { return mutex_is_locked(&rtnl_mutex); } EXPORT_SYMBOL(rtnl_is_locked); bool refcount_dec_and_rtnl_lock(refcount_t *r) { return refcount_dec_and_mutex_lock(r, &rtnl_mutex); } EXPORT_SYMBOL(refcount_dec_and_rtnl_lock); #ifdef CONFIG_PROVE_LOCKING bool lockdep_rtnl_is_held(void) { return lockdep_is_held(&rtnl_mutex); } EXPORT_SYMBOL(lockdep_rtnl_is_held); #endif /* #ifdef CONFIG_PROVE_LOCKING */ #ifdef CONFIG_DEBUG_NET_SMALL_RTNL void __rtnl_net_lock(struct net *net) { ASSERT_RTNL(); mutex_lock(&net->rtnl_mutex); } EXPORT_SYMBOL(__rtnl_net_lock); void __rtnl_net_unlock(struct net *net) { ASSERT_RTNL(); mutex_unlock(&net->rtnl_mutex); } EXPORT_SYMBOL(__rtnl_net_unlock); void rtnl_net_lock(struct net *net) { rtnl_lock(); __rtnl_net_lock(net); } EXPORT_SYMBOL(rtnl_net_lock); void rtnl_net_unlock(struct net *net) { __rtnl_net_unlock(net); rtnl_unlock(); } EXPORT_SYMBOL(rtnl_net_unlock); int rtnl_net_trylock(struct net *net) { int ret = rtnl_trylock(); if (ret) __rtnl_net_lock(net); return ret; } EXPORT_SYMBOL(rtnl_net_trylock); int rtnl_net_lock_killable(struct net *net) { int ret = rtnl_lock_killable(); if (!ret) __rtnl_net_lock(net); return ret; } static int rtnl_net_cmp_locks(const struct net *net_a, const struct net *net_b) { if (net_eq(net_a, net_b)) return 0; /* always init_net first */ if (net_eq(net_a, &init_net)) return -1; if (net_eq(net_b, &init_net)) return 1; /* otherwise lock in ascending order */ return net_a < net_b ? -1 : 1; } int rtnl_net_lock_cmp_fn(const struct lockdep_map *a, const struct lockdep_map *b) { const struct net *net_a, *net_b; net_a = container_of(a, struct net, rtnl_mutex.dep_map); net_b = container_of(b, struct net, rtnl_mutex.dep_map); return rtnl_net_cmp_locks(net_a, net_b); } bool rtnl_net_is_locked(struct net *net) { return rtnl_is_locked() && mutex_is_locked(&net->rtnl_mutex); } EXPORT_SYMBOL(rtnl_net_is_locked); bool lockdep_rtnl_net_is_held(struct net *net) { return lockdep_rtnl_is_held() && lockdep_is_held(&net->rtnl_mutex); } EXPORT_SYMBOL(lockdep_rtnl_net_is_held); #else static int rtnl_net_cmp_locks(const struct net *net_a, const struct net *net_b) { /* No need to swap */ return -1; } #endif struct rtnl_nets { /* ->newlink() needs to freeze 3 netns at most; * 2 for the new device, 1 for its peer. */ struct net *net[3]; unsigned char len; }; static void rtnl_nets_init(struct rtnl_nets *rtnl_nets) { memset(rtnl_nets, 0, sizeof(*rtnl_nets)); } static void rtnl_nets_destroy(struct rtnl_nets *rtnl_nets) { int i; for (i = 0; i < rtnl_nets->len; i++) { put_net(rtnl_nets->net[i]); rtnl_nets->net[i] = NULL; } rtnl_nets->len = 0; } /** * rtnl_nets_add - Add netns to be locked before ->newlink(). * * @rtnl_nets: rtnl_nets pointer passed to ->get_peer_net(). * @net: netns pointer with an extra refcnt held. * * The extra refcnt is released in rtnl_nets_destroy(). */ static void rtnl_nets_add(struct rtnl_nets *rtnl_nets, struct net *net) { int i; DEBUG_NET_WARN_ON_ONCE(rtnl_nets->len == ARRAY_SIZE(rtnl_nets->net)); for (i = 0; i < rtnl_nets->len; i++) { switch (rtnl_net_cmp_locks(rtnl_nets->net[i], net)) { case 0: put_net(net); return; case 1: swap(rtnl_nets->net[i], net); } } rtnl_nets->net[i] = net; rtnl_nets->len++; } static void rtnl_nets_lock(struct rtnl_nets *rtnl_nets) { int i; rtnl_lock(); for (i = 0; i < rtnl_nets->len; i++) __rtnl_net_lock(rtnl_nets->net[i]); } static void rtnl_nets_unlock(struct rtnl_nets *rtnl_nets) { int i; for (i = 0; i < rtnl_nets->len; i++) __rtnl_net_unlock(rtnl_nets->net[i]); rtnl_unlock(); } static struct rtnl_link __rcu *__rcu *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; static inline int rtm_msgindex(int msgtype) { int msgindex = msgtype - RTM_BASE; /* * msgindex < 0 implies someone tried to register a netlink * control code. msgindex >= RTM_NR_MSGTYPES may indicate that * the message type has not been added to linux/rtnetlink.h */ BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); return msgindex; } static struct rtnl_link *rtnl_get_link(int protocol, int msgtype) { struct rtnl_link __rcu **tab; if (protocol >= ARRAY_SIZE(rtnl_msg_handlers)) protocol = PF_UNSPEC; tab = rcu_dereference_rtnl(rtnl_msg_handlers[protocol]); if (!tab) tab = rcu_dereference_rtnl(rtnl_msg_handlers[PF_UNSPEC]); return rcu_dereference_rtnl(tab[msgtype]); } static int rtnl_register_internal(struct module *owner, int protocol, int msgtype, rtnl_doit_func doit, rtnl_dumpit_func dumpit, unsigned int flags) { struct rtnl_link *link, *old; struct rtnl_link __rcu **tab; int msgindex; int ret = -ENOBUFS; BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); msgindex = rtm_msgindex(msgtype); rtnl_lock(); tab = rtnl_dereference(rtnl_msg_handlers[protocol]); if (tab == NULL) { tab = kcalloc(RTM_NR_MSGTYPES, sizeof(void *), GFP_KERNEL); if (!tab) goto unlock; /* ensures we see the 0 stores */ rcu_assign_pointer(rtnl_msg_handlers[protocol], tab); } old = rtnl_dereference(tab[msgindex]); if (old) { link = kmemdup(old, sizeof(*old), GFP_KERNEL); if (!link) goto unlock; } else { link = kzalloc(sizeof(*link), GFP_KERNEL); if (!link) goto unlock; } WARN_ON(link->owner && link->owner != owner); link->owner = owner; WARN_ON(doit && link->doit && link->doit != doit); if (doit) link->doit = doit; WARN_ON(dumpit && link->dumpit && link->dumpit != dumpit); if (dumpit) link->dumpit = dumpit; WARN_ON(rtnl_msgtype_kind(msgtype) != RTNL_KIND_DEL && (flags & RTNL_FLAG_BULK_DEL_SUPPORTED)); link->flags |= flags; /* publish protocol:msgtype */ rcu_assign_pointer(tab[msgindex], link); ret = 0; if (old) kfree_rcu(old, rcu); unlock: rtnl_unlock(); return ret; } /** * rtnl_unregister - Unregister a rtnetlink message type * @protocol: Protocol family or PF_UNSPEC * @msgtype: rtnetlink message type * * Returns 0 on success or a negative error code. */ static int rtnl_unregister(int protocol, int msgtype) { struct rtnl_link __rcu **tab; struct rtnl_link *link; int msgindex; BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); msgindex = rtm_msgindex(msgtype); rtnl_lock(); tab = rtnl_dereference(rtnl_msg_handlers[protocol]); if (!tab) { rtnl_unlock(); return -ENOENT; } link = rcu_replace_pointer_rtnl(tab[msgindex], NULL); rtnl_unlock(); kfree_rcu(link, rcu); return 0; } /** * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol * @protocol : Protocol family or PF_UNSPEC * * Identical to calling rtnl_unregster() for all registered message types * of a certain protocol family. */ void rtnl_unregister_all(int protocol) { struct rtnl_link __rcu **tab; struct rtnl_link *link; int msgindex; BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); rtnl_lock(); tab = rcu_replace_pointer_rtnl(rtnl_msg_handlers[protocol], NULL); if (!tab) { rtnl_unlock(); return; } for (msgindex = 0; msgindex < RTM_NR_MSGTYPES; msgindex++) { link = rcu_replace_pointer_rtnl(tab[msgindex], NULL); kfree_rcu(link, rcu); } rtnl_unlock(); synchronize_net(); kfree(tab); } EXPORT_SYMBOL_GPL(rtnl_unregister_all); /** * __rtnl_register_many - Register rtnetlink message types * @handlers: Array of struct rtnl_msg_handlers * @n: The length of @handlers * * Registers the specified function pointers (at least one of them has * to be non-NULL) to be called whenever a request message for the * specified protocol family and message type is received. * * The special protocol family PF_UNSPEC may be used to define fallback * function pointers for the case when no entry for the specific protocol * family exists. * * When one element of @handlers fails to register, * 1) built-in: panics. * 2) modules : the previous successful registrations are unwinded * and an error is returned. * * Use rtnl_register_many(). */ int __rtnl_register_many(const struct rtnl_msg_handler *handlers, int n) { const struct rtnl_msg_handler *handler; int i, err; for (i = 0, handler = handlers; i < n; i++, handler++) { err = rtnl_register_internal(handler->owner, handler->protocol, handler->msgtype, handler->doit, handler->dumpit, handler->flags); if (err) { if (!handler->owner) panic("Unable to register rtnetlink message " "handlers, %pS\n", handlers); __rtnl_unregister_many(handlers, i); break; } } return err; } EXPORT_SYMBOL_GPL(__rtnl_register_many); void __rtnl_unregister_many(const struct rtnl_msg_handler *handlers, int n) { const struct rtnl_msg_handler *handler; int i; for (i = n - 1, handler = handlers + n - 1; i >= 0; i--, handler--) rtnl_unregister(handler->protocol, handler->msgtype); } EXPORT_SYMBOL_GPL(__rtnl_unregister_many); static DEFINE_MUTEX(link_ops_mutex); static LIST_HEAD(link_ops); static struct rtnl_link_ops *rtnl_link_ops_get(const char *kind, int *srcu_index) { struct rtnl_link_ops *ops; rcu_read_lock(); list_for_each_entry_rcu(ops, &link_ops, list) { if (!strcmp(ops->kind, kind)) { *srcu_index = srcu_read_lock(&ops->srcu); goto unlock; } } ops = NULL; unlock: rcu_read_unlock(); return ops; } static void rtnl_link_ops_put(struct rtnl_link_ops *ops, int srcu_index) { srcu_read_unlock(&ops->srcu, srcu_index); } /** * rtnl_link_register - Register rtnl_link_ops with rtnetlink. * @ops: struct rtnl_link_ops * to register * * Returns 0 on success or a negative error code. */ int rtnl_link_register(struct rtnl_link_ops *ops) { struct rtnl_link_ops *tmp; int err; /* Sanity-check max sizes to avoid stack buffer overflow. */ if (WARN_ON(ops->maxtype > RTNL_MAX_TYPE || ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE)) return -EINVAL; /* The check for alloc/setup is here because if ops * does not have that filled up, it is not possible * to use the ops for creating device. So do not * fill up dellink as well. That disables rtnl_dellink. */ if ((ops->alloc || ops->setup) && !ops->dellink) ops->dellink = unregister_netdevice_queue; err = init_srcu_struct(&ops->srcu); if (err) return err; mutex_lock(&link_ops_mutex); list_for_each_entry(tmp, &link_ops, list) { if (!strcmp(ops->kind, tmp->kind)) { err = -EEXIST; goto unlock; } } list_add_tail_rcu(&ops->list, &link_ops); unlock: mutex_unlock(&link_ops_mutex); return err; } EXPORT_SYMBOL_GPL(rtnl_link_register); static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) { struct net_device *dev; LIST_HEAD(list_kill); for_each_netdev(net, dev) { if (dev->rtnl_link_ops == ops) ops->dellink(dev, &list_kill); } unregister_netdevice_many(&list_kill); } /* Return with the rtnl_lock held when there are no network * devices unregistering in any network namespace. */ static void rtnl_lock_unregistering_all(void) { DEFINE_WAIT_FUNC(wait, woken_wake_function); add_wait_queue(&netdev_unregistering_wq, &wait); for (;;) { rtnl_lock(); /* We held write locked pernet_ops_rwsem, and parallel * setup_net() and cleanup_net() are not possible. */ if (!atomic_read(&dev_unreg_count)) break; __rtnl_unlock(); wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); } remove_wait_queue(&netdev_unregistering_wq, &wait); } /** * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. * @ops: struct rtnl_link_ops * to unregister */ void rtnl_link_unregister(struct rtnl_link_ops *ops) { struct net *net; mutex_lock(&link_ops_mutex); list_del_rcu(&ops->list); mutex_unlock(&link_ops_mutex); synchronize_srcu(&ops->srcu); cleanup_srcu_struct(&ops->srcu); /* Close the race with setup_net() and cleanup_net() */ down_write(&pernet_ops_rwsem); rtnl_lock_unregistering_all(); for_each_net(net) __rtnl_kill_links(net, ops); rtnl_unlock(); up_write(&pernet_ops_rwsem); } EXPORT_SYMBOL_GPL(rtnl_link_unregister); static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) { struct net_device *master_dev; const struct rtnl_link_ops *ops; size_t size = 0; rcu_read_lock(); master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev); if (!master_dev) goto out; ops = master_dev->rtnl_link_ops; if (!ops || !ops->get_slave_size) goto out; /* IFLA_INFO_SLAVE_DATA + nested data */ size = nla_total_size(sizeof(struct nlattr)) + ops->get_slave_size(master_dev, dev); out: rcu_read_unlock(); return size; } static size_t rtnl_link_get_size(const struct net_device *dev) { const struct rtnl_link_ops *ops = dev->rtnl_link_ops; size_t size; if (!ops) return 0; size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ if (ops->get_size) /* IFLA_INFO_DATA + nested data */ size += nla_total_size(sizeof(struct nlattr)) + ops->get_size(dev); if (ops->get_xstats_size) /* IFLA_INFO_XSTATS */ size += nla_total_size(ops->get_xstats_size(dev)); size += rtnl_link_get_slave_info_data_size(dev); return size; } static LIST_HEAD(rtnl_af_ops); static struct rtnl_af_ops *rtnl_af_lookup(const int family, int *srcu_index) { struct rtnl_af_ops *ops; ASSERT_RTNL(); rcu_read_lock(); list_for_each_entry_rcu(ops, &rtnl_af_ops, list) { if (ops->family == family) { *srcu_index = srcu_read_lock(&ops->srcu); goto unlock; } } ops = NULL; unlock: rcu_read_unlock(); return ops; } static void rtnl_af_put(struct rtnl_af_ops *ops, int srcu_index) { srcu_read_unlock(&ops->srcu, srcu_index); } /** * rtnl_af_register - Register rtnl_af_ops with rtnetlink. * @ops: struct rtnl_af_ops * to register * * Return: 0 on success or a negative error code. */ int rtnl_af_register(struct rtnl_af_ops *ops) { int err = init_srcu_struct(&ops->srcu); if (err) return err; rtnl_lock(); list_add_tail_rcu(&ops->list, &rtnl_af_ops); rtnl_unlock(); return 0; } EXPORT_SYMBOL_GPL(rtnl_af_register); /** * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. * @ops: struct rtnl_af_ops * to unregister */ void rtnl_af_unregister(struct rtnl_af_ops *ops) { rtnl_lock(); list_del_rcu(&ops->list); rtnl_unlock(); synchronize_rcu(); synchronize_srcu(&ops->srcu); cleanup_srcu_struct(&ops->srcu); } EXPORT_SYMBOL_GPL(rtnl_af_unregister); static size_t rtnl_link_get_af_size(const struct net_device *dev, u32 ext_filter_mask) { struct rtnl_af_ops *af_ops; size_t size; /* IFLA_AF_SPEC */ size = nla_total_size(sizeof(struct nlattr)); rcu_read_lock(); list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { if (af_ops->get_link_af_size) { /* AF_* + nested data */ size += nla_total_size(sizeof(struct nlattr)) + af_ops->get_link_af_size(dev, ext_filter_mask); } } rcu_read_unlock(); return size; } static bool rtnl_have_link_slave_info(const struct net_device *dev) { struct net_device *master_dev; bool ret = false; rcu_read_lock(); master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev); if (master_dev && master_dev->rtnl_link_ops) ret = true; rcu_read_unlock(); return ret; } static int rtnl_link_slave_info_fill(struct sk_buff *skb, const struct net_device *dev) { struct net_device *master_dev; const struct rtnl_link_ops *ops; struct nlattr *slave_data; int err; master_dev = netdev_master_upper_dev_get((struct net_device *) dev); if (!master_dev) return 0; ops = master_dev->rtnl_link_ops; if (!ops) return 0; if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) return -EMSGSIZE; if (ops->fill_slave_info) { slave_data = nla_nest_start_noflag(skb, IFLA_INFO_SLAVE_DATA); if (!slave_data) return -EMSGSIZE; err = ops->fill_slave_info(skb, master_dev, dev); if (err < 0) goto err_cancel_slave_data; nla_nest_end(skb, slave_data); } return 0; err_cancel_slave_data: nla_nest_cancel(skb, slave_data); return err; } static int rtnl_link_info_fill(struct sk_buff *skb, const struct net_device *dev) { const struct rtnl_link_ops *ops = dev->rtnl_link_ops; struct nlattr *data; int err; if (!ops) return 0; if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) return -EMSGSIZE; if (ops->fill_xstats) { err = ops->fill_xstats(skb, dev); if (err < 0) return err; } if (ops->fill_info) { data = nla_nest_start_noflag(skb, IFLA_INFO_DATA); if (data == NULL) return -EMSGSIZE; err = ops->fill_info(skb, dev); if (err < 0) goto err_cancel_data; nla_nest_end(skb, data); } return 0; err_cancel_data: nla_nest_cancel(skb, data); return err; } static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) { struct nlattr *linkinfo; int err = -EMSGSIZE; linkinfo = nla_nest_start_noflag(skb, IFLA_LINKINFO); if (linkinfo == NULL) goto out; err = rtnl_link_info_fill(skb, dev); if (err < 0) goto err_cancel_link; err = rtnl_link_slave_info_fill(skb, dev); if (err < 0) goto err_cancel_link; nla_nest_end(skb, linkinfo); return 0; err_cancel_link: nla_nest_cancel(skb, linkinfo); out: return err; } int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) { struct sock *rtnl = net->rtnl; return nlmsg_notify(rtnl, skb, pid, group, echo, GFP_KERNEL); } int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) { struct sock *rtnl = net->rtnl; return nlmsg_unicast(rtnl, skb, pid); } EXPORT_SYMBOL(rtnl_unicast); void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, const struct nlmsghdr *nlh, gfp_t flags) { struct sock *rtnl = net->rtnl; nlmsg_notify(rtnl, skb, pid, group, nlmsg_report(nlh), flags); } EXPORT_SYMBOL(rtnl_notify); void rtnl_set_sk_err(struct net *net, u32 group, int error) { struct sock *rtnl = net->rtnl; netlink_set_err(rtnl, 0, group, error); } EXPORT_SYMBOL(rtnl_set_sk_err); int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) { struct nlattr *mx; int i, valid = 0; /* nothing is dumped for dst_default_metrics, so just skip the loop */ if (metrics == dst_default_metrics.metrics) return 0; mx = nla_nest_start_noflag(skb, RTA_METRICS); if (mx == NULL) return -ENOBUFS; for (i = 0; i < RTAX_MAX; i++) { if (metrics[i]) { if (i == RTAX_CC_ALGO - 1) { char tmp[TCP_CA_NAME_MAX], *name; name = tcp_ca_get_name_by_key(metrics[i], tmp); if (!name) continue; if (nla_put_string(skb, i + 1, name)) goto nla_put_failure; } else if (i == RTAX_FEATURES - 1) { u32 user_features = metrics[i] & RTAX_FEATURE_MASK; if (!user_features) continue; BUILD_BUG_ON(RTAX_FEATURE_MASK & DST_FEATURE_MASK); if (nla_put_u32(skb, i + 1, user_features)) goto nla_put_failure; } else { if (nla_put_u32(skb, i + 1, metrics[i])) goto nla_put_failure; } valid++; } } if (!valid) { nla_nest_cancel(skb, mx); return 0; } return nla_nest_end(skb, mx); nla_put_failure: nla_nest_cancel(skb, mx); return -EMSGSIZE; } EXPORT_SYMBOL(rtnetlink_put_metrics); int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, long expires, u32 error) { struct rta_cacheinfo ci = { .rta_error = error, .rta_id = id, }; if (dst) { ci.rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse); ci.rta_used = dst->__use; ci.rta_clntref = rcuref_read(&dst->__rcuref); } if (expires) { unsigned long clock; clock = jiffies_to_clock_t(abs(expires)); clock = min_t(unsigned long, clock, INT_MAX); ci.rta_expires = (expires > 0) ? clock : -clock; } return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); } EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); void netif_set_operstate(struct net_device *dev, int newstate) { unsigned int old = READ_ONCE(dev->operstate); do { if (old == newstate) return; } while (!try_cmpxchg(&dev->operstate, &old, newstate)); netif_state_change(dev); } EXPORT_SYMBOL(netif_set_operstate); static void set_operstate(struct net_device *dev, unsigned char transition) { unsigned char operstate = READ_ONCE(dev->operstate); switch (transition) { case IF_OPER_UP: if ((operstate == IF_OPER_DORMANT || operstate == IF_OPER_TESTING || operstate == IF_OPER_UNKNOWN) && !netif_dormant(dev) && !netif_testing(dev)) operstate = IF_OPER_UP; break; case IF_OPER_TESTING: if (netif_oper_up(dev)) operstate = IF_OPER_TESTING; break; case IF_OPER_DORMANT: if (netif_oper_up(dev)) operstate = IF_OPER_DORMANT; break; } netif_set_operstate(dev, operstate); } static unsigned int rtnl_dev_get_flags(const struct net_device *dev) { return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); } static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, const struct ifinfomsg *ifm) { unsigned int flags = ifm->ifi_flags; /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ if (ifm->ifi_change) flags = (flags & ifm->ifi_change) | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); return flags; } static void copy_rtnl_link_stats(struct rtnl_link_stats *a, const struct rtnl_link_stats64 *b) { a->rx_packets = b->rx_packets; a->tx_packets = b->tx_packets; a->rx_bytes = b->rx_bytes; a->tx_bytes = b->tx_bytes; a->rx_errors = b->rx_errors; a->tx_errors = b->tx_errors; a->rx_dropped = b->rx_dropped; a->tx_dropped = b->tx_dropped; a->multicast = b->multicast; a->collisions = b->collisions; a->rx_length_errors = b->rx_length_errors; a->rx_over_errors = b->rx_over_errors; a->rx_crc_errors = b->rx_crc_errors; a->rx_frame_errors = b->rx_frame_errors; a->rx_fifo_errors = b->rx_fifo_errors; a->rx_missed_errors = b->rx_missed_errors; a->tx_aborted_errors = b->tx_aborted_errors; a->tx_carrier_errors = b->tx_carrier_errors; a->tx_fifo_errors = b->tx_fifo_errors; a->tx_heartbeat_errors = b->tx_heartbeat_errors; a->tx_window_errors = b->tx_window_errors; a->rx_compressed = b->rx_compressed; a->tx_compressed = b->tx_compressed; a->rx_nohandler = b->rx_nohandler; } /* All VF info */ static inline int rtnl_vfinfo_size(const struct net_device *dev, u32 ext_filter_mask) { if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF)) { int num_vfs = dev_num_vf(dev->dev.parent); size_t size = nla_total_size(0); size += num_vfs * (nla_total_size(0) + nla_total_size(sizeof(struct ifla_vf_mac)) + nla_total_size(sizeof(struct ifla_vf_broadcast)) + nla_total_size(sizeof(struct ifla_vf_vlan)) + nla_total_size(0) + /* nest IFLA_VF_VLAN_LIST */ nla_total_size(MAX_VLAN_LIST_LEN * sizeof(struct ifla_vf_vlan_info)) + nla_total_size(sizeof(struct ifla_vf_spoofchk)) + nla_total_size(sizeof(struct ifla_vf_tx_rate)) + nla_total_size(sizeof(struct ifla_vf_rate)) + nla_total_size(sizeof(struct ifla_vf_link_state)) + nla_total_size(sizeof(struct ifla_vf_rss_query_en)) + nla_total_size(sizeof(struct ifla_vf_trust))); if (~ext_filter_mask & RTEXT_FILTER_SKIP_STATS) { size += num_vfs * (nla_total_size(0) + /* nest IFLA_VF_STATS */ /* IFLA_VF_STATS_RX_PACKETS */ nla_total_size_64bit(sizeof(__u64)) + /* IFLA_VF_STATS_TX_PACKETS */ nla_total_size_64bit(sizeof(__u64)) + /* IFLA_VF_STATS_RX_BYTES */ nla_total_size_64bit(sizeof(__u64)) + /* IFLA_VF_STATS_TX_BYTES */ nla_total_size_64bit(sizeof(__u64)) + /* IFLA_VF_STATS_BROADCAST */ nla_total_size_64bit(sizeof(__u64)) + /* IFLA_VF_STATS_MULTICAST */ nla_total_size_64bit(sizeof(__u64)) + /* IFLA_VF_STATS_RX_DROPPED */ nla_total_size_64bit(sizeof(__u64)) + /* IFLA_VF_STATS_TX_DROPPED */ nla_total_size_64bit(sizeof(__u64))); } if (dev->netdev_ops->ndo_get_vf_guid) size += num_vfs * 2 * nla_total_size(sizeof(struct ifla_vf_guid)); return size; } else return 0; } static size_t rtnl_port_size(const struct net_device *dev, u32 ext_filter_mask) { size_t port_size = nla_total_size(4) /* PORT_VF */ + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ + nla_total_size(1) /* PROT_VDP_REQUEST */ + nla_total_size(2); /* PORT_VDP_RESPONSE */ size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) + port_size; size_t port_self_size = nla_total_size(sizeof(struct nlattr)) + port_size; if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || !(ext_filter_mask & RTEXT_FILTER_VF)) return 0; if (dev_num_vf(dev->dev.parent)) return port_self_size + vf_ports_size + vf_port_size * dev_num_vf(dev->dev.parent); else return port_self_size; } static size_t rtnl_xdp_size(void) { size_t xdp_size = nla_total_size(0) + /* nest IFLA_XDP */ nla_total_size(1) + /* XDP_ATTACHED */ nla_total_size(4) + /* XDP_PROG_ID (or 1st mode) */ nla_total_size(4); /* XDP_<mode>_PROG_ID */ return xdp_size; } static size_t rtnl_prop_list_size(const struct net_device *dev) { struct netdev_name_node *name_node; unsigned int cnt = 0; rcu_read_lock(); list_for_each_entry_rcu(name_node, &dev->name_node->list, list) cnt++; rcu_read_unlock(); if (!cnt) return 0; return nla_total_size(0) + cnt * nla_total_size(ALTIFNAMSIZ); } static size_t rtnl_proto_down_size(const struct net_device *dev) { size_t size = nla_total_size(1); /* Assume dev->proto_down_reason is not zero. */ size += nla_total_size(0) + nla_total_size(4); return size; } static size_t rtnl_devlink_port_size(const struct net_device *dev) { size_t size = nla_total_size(0); /* nest IFLA_DEVLINK_PORT */ if (dev->devlink_port) size += devlink_nl_port_handle_size(dev->devlink_port); return size; } static size_t rtnl_dpll_pin_size(const struct net_device *dev) { size_t size = nla_total_size(0); /* nest IFLA_DPLL_PIN */ size += dpll_netdev_pin_handle_size(dev); return size; } static noinline size_t if_nlmsg_size(const struct net_device *dev, u32 ext_filter_mask) { return NLMSG_ALIGN(sizeof(struct ifinfomsg)) + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ + nla_total_size_64bit(sizeof(struct rtnl_link_ifmap)) + nla_total_size(sizeof(struct rtnl_link_stats)) + nla_total_size_64bit(sizeof(struct rtnl_link_stats64)) + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ + nla_total_size(4) /* IFLA_TXQLEN */ + nla_total_size(4) /* IFLA_WEIGHT */ + nla_total_size(4) /* IFLA_MTU */ + nla_total_size(4) /* IFLA_LINK */ + nla_total_size(4) /* IFLA_MASTER */ + nla_total_size(1) /* IFLA_CARRIER */ + nla_total_size(4) /* IFLA_PROMISCUITY */ + nla_total_size(4) /* IFLA_ALLMULTI */ + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ + nla_total_size(4) /* IFLA_GSO_MAX_SEGS */ + nla_total_size(4) /* IFLA_GSO_MAX_SIZE */ + nla_total_size(4) /* IFLA_GRO_MAX_SIZE */ + nla_total_size(4) /* IFLA_GSO_IPV4_MAX_SIZE */ + nla_total_size(4) /* IFLA_GRO_IPV4_MAX_SIZE */ + nla_total_size(4) /* IFLA_TSO_MAX_SIZE */ + nla_total_size(4) /* IFLA_TSO_MAX_SEGS */ + nla_total_size(1) /* IFLA_OPERSTATE */ + nla_total_size(1) /* IFLA_LINKMODE */ + nla_total_size(1) /* IFLA_NETNS_IMMUTABLE */ + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ + nla_total_size(4) /* IFLA_LINK_NETNSID */ + nla_total_size(4) /* IFLA_GROUP */ + nla_total_size(ext_filter_mask & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */ + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */ + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */ + rtnl_xdp_size() /* IFLA_XDP */ + nla_total_size(4) /* IFLA_EVENT */ + nla_total_size(4) /* IFLA_NEW_NETNSID */ + nla_total_size(4) /* IFLA_NEW_IFINDEX */ + rtnl_proto_down_size(dev) /* proto down */ + nla_total_size(4) /* IFLA_TARGET_NETNSID */ + nla_total_size(4) /* IFLA_CARRIER_UP_COUNT */ + nla_total_size(4) /* IFLA_CARRIER_DOWN_COUNT */ + nla_total_size(4) /* IFLA_MIN_MTU */ + nla_total_size(4) /* IFLA_MAX_MTU */ + rtnl_prop_list_size(dev) + nla_total_size(MAX_ADDR_LEN) /* IFLA_PERM_ADDRESS */ + rtnl_devlink_port_size(dev) + rtnl_dpll_pin_size(dev) + nla_total_size(8) /* IFLA_MAX_PACING_OFFLOAD_HORIZON */ + 0; } static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) { struct nlattr *vf_ports; struct nlattr *vf_port; int vf; int err; vf_ports = nla_nest_start_noflag(skb, IFLA_VF_PORTS); if (!vf_ports) return -EMSGSIZE; for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { vf_port = nla_nest_start_noflag(skb, IFLA_VF_PORT); if (!vf_port) goto nla_put_failure; if (nla_put_u32(skb, IFLA_PORT_VF, vf)) goto nla_put_failure; err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); if (err == -EMSGSIZE) goto nla_put_failure; if (err) { nla_nest_cancel(skb, vf_port); continue; } nla_nest_end(skb, vf_port); } nla_nest_end(skb, vf_ports); return 0; nla_put_failure: nla_nest_cancel(skb, vf_ports); return -EMSGSIZE; } static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) { struct nlattr *port_self; int err; port_self = nla_nest_start_noflag(skb, IFLA_PORT_SELF); if (!port_self) return -EMSGSIZE; err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); if (err) { nla_nest_cancel(skb, port_self); return (err == -EMSGSIZE) ? err : 0; } nla_nest_end(skb, port_self); return 0; } static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, u32 ext_filter_mask) { int err; if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || !(ext_filter_mask & RTEXT_FILTER_VF)) return 0; err = rtnl_port_self_fill(skb, dev); if (err) return err; if (dev_num_vf(dev->dev.parent)) { err = rtnl_vf_ports_fill(skb, dev); if (err) return err; } return 0; } static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) { int err; struct netdev_phys_item_id ppid; err = dev_get_phys_port_id(dev, &ppid); if (err) { if (err == -EOPNOTSUPP) return 0; return err; } if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) return -EMSGSIZE; return 0; } static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev) { char name[IFNAMSIZ]; int err; err = dev_get_phys_port_name(dev, name, sizeof(name)); if (err) { if (err == -EOPNOTSUPP) return 0; return err; } if (nla_put_string(skb, IFLA_PHYS_PORT_NAME, name)) return -EMSGSIZE; return 0; } static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) { struct netdev_phys_item_id ppid = { }; int err; err = dev_get_port_parent_id(dev, &ppid, false); if (err) { if (err == -EOPNOTSUPP) return 0; return err; } if (nla_put(skb, IFLA_PHYS_SWITCH_ID, ppid.id_len, ppid.id)) return -EMSGSIZE; return 0; } static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb, struct net_device *dev) { struct rtnl_link_stats64 *sp; struct nlattr *attr; attr = nla_reserve_64bit(skb, IFLA_STATS64, sizeof(struct rtnl_link_stats64), IFLA_PAD); if (!attr) return -EMSGSIZE; sp = nla_data(attr); dev_get_stats(dev, sp); attr = nla_reserve(skb, IFLA_STATS, sizeof(struct rtnl_link_stats)); if (!attr) return -EMSGSIZE; copy_rtnl_link_stats(nla_data(attr), sp); return 0; } static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, struct net_device *dev, int vfs_num, u32 ext_filter_mask) { struct ifla_vf_rss_query_en vf_rss_query_en; struct nlattr *vf, *vfstats, *vfvlanlist; struct ifla_vf_link_state vf_linkstate; struct ifla_vf_vlan_info vf_vlan_info; struct ifla_vf_spoofchk vf_spoofchk; struct ifla_vf_tx_rate vf_tx_rate; struct ifla_vf_stats vf_stats; struct ifla_vf_trust vf_trust; struct ifla_vf_vlan vf_vlan; struct ifla_vf_rate vf_rate; struct ifla_vf_mac vf_mac; struct ifla_vf_broadcast vf_broadcast; struct ifla_vf_info ivi; struct ifla_vf_guid node_guid; struct ifla_vf_guid port_guid; memset(&ivi, 0, sizeof(ivi)); /* Not all SR-IOV capable drivers support the * spoofcheck and "RSS query enable" query. Preset to * -1 so the user space tool can detect that the driver * didn't report anything. */ ivi.spoofchk = -1; ivi.rss_query_en = -1; ivi.trusted = -1; /* The default value for VF link state is "auto" * IFLA_VF_LINK_STATE_AUTO which equals zero */ ivi.linkstate = 0; /* VLAN Protocol by default is 802.1Q */ ivi.vlan_proto = htons(ETH_P_8021Q); if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi)) return 0; memset(&vf_vlan_info, 0, sizeof(vf_vlan_info)); memset(&node_guid, 0, sizeof(node_guid)); memset(&port_guid, 0, sizeof(port_guid)); vf_mac.vf = vf_vlan.vf = vf_vlan_info.vf = vf_rate.vf = vf_tx_rate.vf = vf_spoofchk.vf = vf_linkstate.vf = vf_rss_query_en.vf = vf_trust.vf = node_guid.vf = port_guid.vf = ivi.vf; memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); memcpy(vf_broadcast.broadcast, dev->broadcast, dev->addr_len); vf_vlan.vlan = ivi.vlan; vf_vlan.qos = ivi.qos; vf_vlan_info.vlan = ivi.vlan; vf_vlan_info.qos = ivi.qos; vf_vlan_info.vlan_proto = ivi.vlan_proto; vf_tx_rate.rate = ivi.max_tx_rate; vf_rate.min_tx_rate = ivi.min_tx_rate; vf_rate.max_tx_rate = ivi.max_tx_rate; vf_spoofchk.setting = ivi.spoofchk; vf_linkstate.link_state = ivi.linkstate; vf_rss_query_en.setting = ivi.rss_query_en; vf_trust.setting = ivi.trusted; vf = nla_nest_start_noflag(skb, IFLA_VF_INFO); if (!vf) return -EMSGSIZE; if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || nla_put(skb, IFLA_VF_BROADCAST, sizeof(vf_broadcast), &vf_broadcast) || nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), &vf_rate) || nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), &vf_tx_rate) || nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), &vf_spoofchk) || nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), &vf_linkstate) || nla_put(skb, IFLA_VF_RSS_QUERY_EN, sizeof(vf_rss_query_en), &vf_rss_query_en) || nla_put(skb, IFLA_VF_TRUST, sizeof(vf_trust), &vf_trust)) goto nla_put_vf_failure; if (dev->netdev_ops->ndo_get_vf_guid && !dev->netdev_ops->ndo_get_vf_guid(dev, vfs_num, &node_guid, &port_guid)) { if (nla_put(skb, IFLA_VF_IB_NODE_GUID, sizeof(node_guid), &node_guid) || nla_put(skb, IFLA_VF_IB_PORT_GUID, sizeof(port_guid), &port_guid)) goto nla_put_vf_failure; } vfvlanlist = nla_nest_start_noflag(skb, IFLA_VF_VLAN_LIST); if (!vfvlanlist) goto nla_put_vf_failure; if (nla_put(skb, IFLA_VF_VLAN_INFO, sizeof(vf_vlan_info), &vf_vlan_info)) { nla_nest_cancel(skb, vfvlanlist); goto nla_put_vf_failure; } nla_nest_end(skb, vfvlanlist); if (~ext_filter_mask & RTEXT_FILTER_SKIP_STATS) { memset(&vf_stats, 0, sizeof(vf_stats)); if (dev->netdev_ops->ndo_get_vf_stats) dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num, &vf_stats); vfstats = nla_nest_start_noflag(skb, IFLA_VF_STATS); if (!vfstats) goto nla_put_vf_failure; if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS, vf_stats.rx_packets, IFLA_VF_STATS_PAD) || nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS, vf_stats.tx_packets, IFLA_VF_STATS_PAD) || nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES, vf_stats.rx_bytes, IFLA_VF_STATS_PAD) || nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES, vf_stats.tx_bytes, IFLA_VF_STATS_PAD) || nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST, vf_stats.broadcast, IFLA_VF_STATS_PAD) || nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST, vf_stats.multicast, IFLA_VF_STATS_PAD) || nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_DROPPED, vf_stats.rx_dropped, IFLA_VF_STATS_PAD) || nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_DROPPED, vf_stats.tx_dropped, IFLA_VF_STATS_PAD)) { nla_nest_cancel(skb, vfstats); goto nla_put_vf_failure; } nla_nest_end(skb, vfstats); } nla_nest_end(skb, vf); return 0; nla_put_vf_failure: nla_nest_cancel(skb, vf); return -EMSGSIZE; } static noinline_for_stack int rtnl_fill_vf(struct sk_buff *skb, struct net_device *dev, u32 ext_filter_mask) { struct nlattr *vfinfo; int i, num_vfs; if (!dev->dev.parent || ((ext_filter_mask & RTEXT_FILTER_VF) == 0)) return 0; num_vfs = dev_num_vf(dev->dev.parent); if (nla_put_u32(skb, IFLA_NUM_VF, num_vfs)) return -EMSGSIZE; if (!dev->netdev_ops->ndo_get_vf_config) return 0; vfinfo = nla_nest_start_noflag(skb, IFLA_VFINFO_LIST); if (!vfinfo) return -EMSGSIZE; for (i = 0; i < num_vfs; i++) { if (rtnl_fill_vfinfo(skb, dev, i, ext_filter_mask)) { nla_nest_cancel(skb, vfinfo); return -EMSGSIZE; } } nla_nest_end(skb, vfinfo); return 0; } static int rtnl_fill_link_ifmap(struct sk_buff *skb, const struct net_device *dev) { struct rtnl_link_ifmap map; memset(&map, 0, sizeof(map)); map.mem_start = READ_ONCE(dev->mem_start); map.mem_end = READ_ONCE(dev->mem_end); map.base_addr = READ_ONCE(dev->base_addr); map.irq = READ_ONCE(dev->irq); map.dma = READ_ONCE(dev->dma); map.port = READ_ONCE(dev->if_port); if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD)) return -EMSGSIZE; return 0; } static u32 rtnl_xdp_prog_skb(struct net_device *dev) { const struct bpf_prog *generic_xdp_prog; u32 res = 0; rcu_read_lock(); generic_xdp_prog = rcu_dereference(dev->xdp_prog); if (generic_xdp_prog) res = generic_xdp_prog->aux->id; rcu_read_unlock(); return res; } static u32 rtnl_xdp_prog_drv(struct net_device *dev) { return dev_xdp_prog_id(dev, XDP_MODE_DRV); } static u32 rtnl_xdp_prog_hw(struct net_device *dev) { return dev_xdp_prog_id(dev, XDP_MODE_HW); } static int rtnl_xdp_report_one(struct sk_buff *skb, struct net_device *dev, u32 *prog_id, u8 *mode, u8 tgt_mode, u32 attr, u32 (*get_prog_id)(struct net_device *dev)) { u32 curr_id; int err; curr_id = get_prog_id(dev); if (!curr_id) return 0; *prog_id = curr_id; err = nla_put_u32(skb, attr, curr_id); if (err) return err; if (*mode != XDP_ATTACHED_NONE) *mode = XDP_ATTACHED_MULTI; else *mode = tgt_mode; return 0; } static int rtnl_xdp_fill(struct sk_buff *skb, struct net_device *dev) { struct nlattr *xdp; u32 prog_id; int err; u8 mode; xdp = nla_nest_start_noflag(skb, IFLA_XDP); if (!xdp) return -EMSGSIZE; prog_id = 0; mode = XDP_ATTACHED_NONE; err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_SKB, IFLA_XDP_SKB_PROG_ID, rtnl_xdp_prog_skb); if (err) goto err_cancel; err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_DRV, IFLA_XDP_DRV_PROG_ID, rtnl_xdp_prog_drv); if (err) goto err_cancel; err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_HW, IFLA_XDP_HW_PROG_ID, rtnl_xdp_prog_hw); if (err) goto err_cancel; err = nla_put_u8(skb, IFLA_XDP_ATTACHED, mode); if (err) goto err_cancel; if (prog_id && mode != XDP_ATTACHED_MULTI) { err = nla_put_u32(skb, IFLA_XDP_PROG_ID, prog_id); if (err) goto err_cancel; } nla_nest_end(skb, xdp); return 0; err_cancel: nla_nest_cancel(skb, xdp); return err; } static u32 rtnl_get_event(unsigned long event) { u32 rtnl_event_type = IFLA_EVENT_NONE; switch (event) { case NETDEV_REBOOT: rtnl_event_type = IFLA_EVENT_REBOOT; break; case NETDEV_FEAT_CHANGE: rtnl_event_type = IFLA_EVENT_FEATURES; break; case NETDEV_BONDING_FAILOVER: rtnl_event_type = IFLA_EVENT_BONDING_FAILOVER; break; case NETDEV_NOTIFY_PEERS: rtnl_event_type = IFLA_EVENT_NOTIFY_PEERS; break; case NETDEV_RESEND_IGMP: rtnl_event_type = IFLA_EVENT_IGMP_RESEND; break; case NETDEV_CHANGEINFODATA: rtnl_event_type = IFLA_EVENT_BONDING_OPTIONS; break; default: break; } return rtnl_event_type; } static int put_master_ifindex(struct sk_buff *skb, struct net_device *dev) { const struct net_device *upper_dev; int ret = 0; rcu_read_lock(); upper_dev = netdev_master_upper_dev_get_rcu(dev); if (upper_dev) ret = nla_put_u32(skb, IFLA_MASTER, READ_ONCE(upper_dev->ifindex)); rcu_read_unlock(); return ret; } static int nla_put_iflink(struct sk_buff *skb, const struct net_device *dev, bool force) { int iflink = dev_get_iflink(dev); if (force || READ_ONCE(dev->ifindex) != iflink) return nla_put_u32(skb, IFLA_LINK, iflink); return 0; } static noinline_for_stack int nla_put_ifalias(struct sk_buff *skb, struct net_device *dev) { char buf[IFALIASZ]; int ret; ret = dev_get_alias(dev, buf, sizeof(buf)); return ret > 0 ? nla_put_string(skb, IFLA_IFALIAS, buf) : 0; } static int rtnl_fill_link_netnsid(struct sk_buff *skb, const struct net_device *dev, struct net *src_net, gfp_t gfp) { bool put_iflink = false; if (dev->rtnl_link_ops && dev->rtnl_link_ops->get_link_net) { struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); if (!net_eq(dev_net(dev), link_net)) { int id = peernet2id_alloc(src_net, link_net, gfp); if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) return -EMSGSIZE; put_iflink = true; } } return nla_put_iflink(skb, dev, put_iflink); } static int rtnl_fill_link_af(struct sk_buff *skb, const struct net_device *dev, u32 ext_filter_mask) { const struct rtnl_af_ops *af_ops; struct nlattr *af_spec; af_spec = nla_nest_start_noflag(skb, IFLA_AF_SPEC); if (!af_spec) return -EMSGSIZE; list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { struct nlattr *af; int err; if (!af_ops->fill_link_af) continue; af = nla_nest_start_noflag(skb, af_ops->family); if (!af) return -EMSGSIZE; err = af_ops->fill_link_af(skb, dev, ext_filter_mask); /* * Caller may return ENODATA to indicate that there * was no data to be dumped. This is not an error, it * means we should trim the attribute header and * continue. */ if (err == -ENODATA) nla_nest_cancel(skb, af); else if (err < 0) return -EMSGSIZE; nla_nest_end(skb, af); } nla_nest_end(skb, af_spec); return 0; } static int rtnl_fill_alt_ifnames(struct sk_buff *skb, const struct net_device *dev) { struct netdev_name_node *name_node; int count = 0; list_for_each_entry_rcu(name_node, &dev->name_node->list, list) { if (nla_put_string(skb, IFLA_ALT_IFNAME, name_node->name)) return -EMSGSIZE; count++; } return count; } /* RCU protected. */ static int rtnl_fill_prop_list(struct sk_buff *skb, const struct net_device *dev) { struct nlattr *prop_list; int ret; prop_list = nla_nest_start(skb, IFLA_PROP_LIST); if (!prop_list) return -EMSGSIZE; ret = rtnl_fill_alt_ifnames(skb, dev); if (ret <= 0) goto nest_cancel; nla_nest_end(skb, prop_list); return 0; nest_cancel: nla_nest_cancel(skb, prop_list); return ret; } static int rtnl_fill_proto_down(struct sk_buff *skb, const struct net_device *dev) { struct nlattr *pr; u32 preason; if (nla_put_u8(skb, IFLA_PROTO_DOWN, READ_ONCE(dev->proto_down))) goto nla_put_failure; preason = READ_ONCE(dev->proto_down_reason); if (!preason) return 0; pr = nla_nest_start(skb, IFLA_PROTO_DOWN_REASON); if (!pr) return -EMSGSIZE; if (nla_put_u32(skb, IFLA_PROTO_DOWN_REASON_VALUE, preason)) { nla_nest_cancel(skb, pr); goto nla_put_failure; } nla_nest_end(skb, pr); return 0; nla_put_failure: return -EMSGSIZE; } static int rtnl_fill_devlink_port(struct sk_buff *skb, const struct net_device *dev) { struct nlattr *devlink_port_nest; int ret; devlink_port_nest = nla_nest_start(skb, IFLA_DEVLINK_PORT); if (!devlink_port_nest) return -EMSGSIZE; if (dev->devlink_port) { ret = devlink_nl_port_handle_fill(skb, dev->devlink_port); if (ret < 0) goto nest_cancel; } nla_nest_end(skb, devlink_port_nest); return 0; nest_cancel: nla_nest_cancel(skb, devlink_port_nest); return ret; } static int rtnl_fill_dpll_pin(struct sk_buff *skb, const struct net_device *dev) { struct nlattr *dpll_pin_nest; int ret; dpll_pin_nest = nla_nest_start(skb, IFLA_DPLL_PIN); if (!dpll_pin_nest) return -EMSGSIZE; ret = dpll_netdev_add_pin_handle(skb, dev); if (ret < 0) goto nest_cancel; nla_nest_end(skb, dpll_pin_nest); return 0; nest_cancel: nla_nest_cancel(skb, dpll_pin_nest); return ret; } static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, struct net *src_net, int type, u32 pid, u32 seq, u32 change, unsigned int flags, u32 ext_filter_mask, u32 event, int *new_nsid, int new_ifindex, int tgt_netnsid, gfp_t gfp) { char devname[IFNAMSIZ]; struct ifinfomsg *ifm; struct nlmsghdr *nlh; struct Qdisc *qdisc; ASSERT_RTNL(); nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); if (nlh == NULL) return -EMSGSIZE; ifm = nlmsg_data(nlh); ifm->ifi_family = AF_UNSPEC; ifm->__ifi_pad = 0; ifm->ifi_type = READ_ONCE(dev->type); ifm->ifi_index = READ_ONCE(dev->ifindex); ifm->ifi_flags = dev_get_flags(dev); ifm->ifi_change = change; if (tgt_netnsid >= 0 && nla_put_s32(skb, IFLA_TARGET_NETNSID, tgt_netnsid)) goto nla_put_failure; netdev_copy_name(dev, devname); if (nla_put_string(skb, IFLA_IFNAME, devname)) goto nla_put_failure; if (nla_put_u32(skb, IFLA_TXQLEN, READ_ONCE(dev->tx_queue_len)) || nla_put_u8(skb, IFLA_OPERSTATE, netif_running(dev) ? READ_ONCE(dev->operstate) : IF_OPER_DOWN) || nla_put_u8(skb, IFLA_LINKMODE, READ_ONCE(dev->link_mode)) || nla_put_u8(skb, IFLA_NETNS_IMMUTABLE, dev->netns_immutable) || nla_put_u32(skb, IFLA_MTU, READ_ONCE(dev->mtu)) || nla_put_u32(skb, IFLA_MIN_MTU, READ_ONCE(dev->min_mtu)) || nla_put_u32(skb, IFLA_MAX_MTU, READ_ONCE(dev->max_mtu)) || nla_put_u32(skb, IFLA_GROUP, READ_ONCE(dev->group)) || nla_put_u32(skb, IFLA_PROMISCUITY, READ_ONCE(dev->promiscuity)) || nla_put_u32(skb, IFLA_ALLMULTI, READ_ONCE(dev->allmulti)) || nla_put_u32(skb, IFLA_NUM_TX_QUEUES, READ_ONCE(dev->num_tx_queues)) || nla_put_u32(skb, IFLA_GSO_MAX_SEGS, READ_ONCE(dev->gso_max_segs)) || nla_put_u32(skb, IFLA_GSO_MAX_SIZE, READ_ONCE(dev->gso_max_size)) || nla_put_u32(skb, IFLA_GRO_MAX_SIZE, READ_ONCE(dev->gro_max_size)) || nla_put_u32(skb, IFLA_GSO_IPV4_MAX_SIZE, READ_ONCE(dev->gso_ipv4_max_size)) || nla_put_u32(skb, IFLA_GRO_IPV4_MAX_SIZE, READ_ONCE(dev->gro_ipv4_max_size)) || nla_put_u32(skb, IFLA_TSO_MAX_SIZE, READ_ONCE(dev->tso_max_size)) || nla_put_u32(skb, IFLA_TSO_MAX_SEGS, READ_ONCE(dev->tso_max_segs)) || nla_put_uint(skb, IFLA_MAX_PACING_OFFLOAD_HORIZON, READ_ONCE(dev->max_pacing_offload_horizon)) || #ifdef CONFIG_RPS nla_put_u32(skb, IFLA_NUM_RX_QUEUES, READ_ONCE(dev->num_rx_queues)) || #endif put_master_ifindex(skb, dev) || nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || nla_put_ifalias(skb, dev) || nla_put_u32(skb, IFLA_CARRIER_CHANGES, atomic_read(&dev->carrier_up_count) + atomic_read(&dev->carrier_down_count)) || nla_put_u32(skb, IFLA_CARRIER_UP_COUNT, atomic_read(&dev->carrier_up_count)) || nla_put_u32(skb, IFLA_CARRIER_DOWN_COUNT, atomic_read(&dev->carrier_down_count))) goto nla_put_failure; if (rtnl_fill_proto_down(skb, dev)) goto nla_put_failure; if (event != IFLA_EVENT_NONE) { if (nla_put_u32(skb, IFLA_EVENT, event)) goto nla_put_failure; } if (dev->addr_len) { if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) goto nla_put_failure; } if (rtnl_phys_port_id_fill(skb, dev)) goto nla_put_failure; if (rtnl_phys_port_name_fill(skb, dev)) goto nla_put_failure; if (rtnl_phys_switch_id_fill(skb, dev)) goto nla_put_failure; if (rtnl_fill_stats(skb, dev)) goto nla_put_failure; if (rtnl_fill_vf(skb, dev, ext_filter_mask)) goto nla_put_failure; if (rtnl_port_fill(skb, dev, ext_filter_mask)) goto nla_put_failure; if (rtnl_xdp_fill(skb, dev)) goto nla_put_failure; if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { if (rtnl_link_fill(skb, dev) < 0) goto nla_put_failure; } if (new_nsid && nla_put_s32(skb, IFLA_NEW_NETNSID, *new_nsid) < 0) goto nla_put_failure; if (new_ifindex && nla_put_s32(skb, IFLA_NEW_IFINDEX, new_ifindex) < 0) goto nla_put_failure; if (memchr_inv(dev->perm_addr, '\0', dev->addr_len) && nla_put(skb, IFLA_PERM_ADDRESS, dev->addr_len, dev->perm_addr)) goto nla_put_failure; rcu_read_lock(); if (rtnl_fill_link_netnsid(skb, dev, src_net, GFP_ATOMIC)) goto nla_put_failure_rcu; qdisc = rcu_dereference(dev->qdisc); if (qdisc && nla_put_string(skb, IFLA_QDISC, qdisc->ops->id)) goto nla_put_failure_rcu; if (rtnl_fill_link_af(skb, dev, ext_filter_mask)) goto nla_put_failure_rcu; if (rtnl_fill_link_ifmap(skb, dev)) goto nla_put_failure_rcu; if (rtnl_fill_prop_list(skb, dev)) goto nla_put_failure_rcu; rcu_read_unlock(); if (dev->dev.parent && nla_put_string(skb, IFLA_PARENT_DEV_NAME, dev_name(dev->dev.parent))) goto nla_put_failure; if (dev->dev.parent && dev->dev.parent->bus && nla_put_string(skb, IFLA_PARENT_DEV_BUS_NAME, dev->dev.parent->bus->name)) goto nla_put_failure; if (rtnl_fill_devlink_port(skb, dev)) goto nla_put_failure; if (rtnl_fill_dpll_pin(skb, dev)) goto nla_put_failure; nlmsg_end(skb, nlh); return 0; nla_put_failure_rcu: rcu_read_unlock(); nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } static const struct nla_policy ifla_policy[IFLA_MAX+1] = { [IFLA_UNSPEC] = { .strict_start_type = IFLA_DPLL_PIN }, [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, [IFLA_MTU] = { .type = NLA_U32 }, [IFLA_LINK] = { .type = NLA_U32 }, [IFLA_MASTER] = { .type = NLA_U32 }, [IFLA_CARRIER] = { .type = NLA_U8 }, [IFLA_TXQLEN] = { .type = NLA_U32 }, [IFLA_WEIGHT] = { .type = NLA_U32 }, [IFLA_OPERSTATE] = { .type = NLA_U8 }, [IFLA_LINKMODE] = { .type = NLA_U8 }, [IFLA_LINKINFO] = { .type = NLA_NESTED }, [IFLA_NET_NS_PID] = { .type = NLA_U32 }, [IFLA_NET_NS_FD] = { .type = NLA_U32 }, /* IFLA_IFALIAS is a string, but policy is set to NLA_BINARY to * allow 0-length string (needed to remove an alias). */ [IFLA_IFALIAS] = { .type = NLA_BINARY, .len = IFALIASZ - 1 }, [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, [IFLA_VF_PORTS] = { .type = NLA_NESTED }, [IFLA_PORT_SELF] = { .type = NLA_NESTED }, [IFLA_AF_SPEC] = { .type = NLA_NESTED }, [IFLA_EXT_MASK] = { .type = NLA_U32 }, [IFLA_PROMISCUITY] = { .type = NLA_U32 }, [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, [IFLA_GSO_MAX_SEGS] = { .type = NLA_U32 }, [IFLA_GSO_MAX_SIZE] = NLA_POLICY_MIN(NLA_U32, MAX_TCP_HEADER + 1), [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, [IFLA_PROTO_DOWN] = { .type = NLA_U8 }, [IFLA_XDP] = { .type = NLA_NESTED }, [IFLA_EVENT] = { .type = NLA_U32 }, [IFLA_GROUP] = { .type = NLA_U32 }, [IFLA_TARGET_NETNSID] = { .type = NLA_S32 }, [IFLA_CARRIER_UP_COUNT] = { .type = NLA_U32 }, [IFLA_CARRIER_DOWN_COUNT] = { .type = NLA_U32 }, [IFLA_MIN_MTU] = { .type = NLA_U32 }, [IFLA_MAX_MTU] = { .type = NLA_U32 }, [IFLA_PROP_LIST] = { .type = NLA_NESTED }, [IFLA_ALT_IFNAME] = { .type = NLA_STRING, .len = ALTIFNAMSIZ - 1 }, [IFLA_PERM_ADDRESS] = { .type = NLA_REJECT }, [IFLA_PROTO_DOWN_REASON] = { .type = NLA_NESTED }, [IFLA_NEW_IFINDEX] = NLA_POLICY_MIN(NLA_S32, 1), [IFLA_PARENT_DEV_NAME] = { .type = NLA_NUL_STRING }, [IFLA_GRO_MAX_SIZE] = { .type = NLA_U32 }, [IFLA_TSO_MAX_SIZE] = { .type = NLA_REJECT }, [IFLA_TSO_MAX_SEGS] = { .type = NLA_REJECT }, [IFLA_ALLMULTI] = { .type = NLA_REJECT }, [IFLA_GSO_IPV4_MAX_SIZE] = NLA_POLICY_MIN(NLA_U32, MAX_TCP_HEADER + 1), [IFLA_GRO_IPV4_MAX_SIZE] = { .type = NLA_U32 }, [IFLA_NETNS_IMMUTABLE] = { .type = NLA_REJECT }, }; static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { [IFLA_INFO_KIND] = { .type = NLA_STRING }, [IFLA_INFO_DATA] = { .type = NLA_NESTED }, [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, }; static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) }, [IFLA_VF_BROADCAST] = { .type = NLA_REJECT }, [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) }, [IFLA_VF_VLAN_LIST] = { .type = NLA_NESTED }, [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) }, [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) }, [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) }, [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) }, [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) }, [IFLA_VF_STATS] = { .type = NLA_NESTED }, [IFLA_VF_TRUST] = { .len = sizeof(struct ifla_vf_trust) }, [IFLA_VF_IB_NODE_GUID] = { .len = sizeof(struct ifla_vf_guid) }, [IFLA_VF_IB_PORT_GUID] = { .len = sizeof(struct ifla_vf_guid) }, }; static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { [IFLA_PORT_VF] = { .type = NLA_U32 }, [IFLA_PORT_PROFILE] = { .type = NLA_STRING, .len = PORT_PROFILE_MAX }, [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, .len = PORT_UUID_MAX }, [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, .len = PORT_UUID_MAX }, [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, /* Unused, but we need to keep it here since user space could * fill it. It's also broken with regard to NLA_BINARY use in * combination with structs. */ [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, .len = sizeof(struct ifla_port_vsi) }, }; static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = { [IFLA_XDP_UNSPEC] = { .strict_start_type = IFLA_XDP_EXPECTED_FD }, [IFLA_XDP_FD] = { .type = NLA_S32 }, [IFLA_XDP_EXPECTED_FD] = { .type = NLA_S32 }, [IFLA_XDP_ATTACHED] = { .type = NLA_U8 }, [IFLA_XDP_FLAGS] = { .type = NLA_U32 }, [IFLA_XDP_PROG_ID] = { .type = NLA_U32 }, }; static struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla, int *ops_srcu_index) { struct nlattr *linfo[IFLA_INFO_MAX + 1]; struct rtnl_link_ops *ops = NULL; if (nla_parse_nested_deprecated(linfo, IFLA_INFO_MAX, nla, ifla_info_policy, NULL) < 0) return NULL; if (linfo[IFLA_INFO_KIND]) { char kind[MODULE_NAME_LEN]; nla_strscpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind)); ops = rtnl_link_ops_get(kind, ops_srcu_index); } return ops; } static bool link_master_filtered(struct net_device *dev, int master_idx) { struct net_device *master; if (!master_idx) return false; master = netdev_master_upper_dev_get(dev); /* 0 is already used to denote IFLA_MASTER wasn't passed, therefore need * another invalid value for ifindex to denote "no master". */ if (master_idx == -1) return !!master; if (!master || master->ifindex != master_idx) return true; return false; } static bool link_kind_filtered(const struct net_device *dev, const struct rtnl_link_ops *kind_ops) { if (kind_ops && dev->rtnl_link_ops != kind_ops) return true; return false; } static bool link_dump_filtered(struct net_device *dev, int master_idx, const struct rtnl_link_ops *kind_ops) { if (link_master_filtered(dev, master_idx) || link_kind_filtered(dev, kind_ops)) return true; return false; } /** * rtnl_get_net_ns_capable - Get netns if sufficiently privileged. * @sk: netlink socket * @netnsid: network namespace identifier * * Returns the network namespace identified by netnsid on success or an error * pointer on failure. */ struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid) { struct net *net; net = get_net_ns_by_id(sock_net(sk), netnsid); if (!net) return ERR_PTR(-EINVAL); /* For now, the caller is required to have CAP_NET_ADMIN in * the user namespace owning the target net ns. */ if (!sk_ns_capable(sk, net->user_ns, CAP_NET_ADMIN)) { put_net(net); return ERR_PTR(-EACCES); } return net; } EXPORT_SYMBOL_GPL(rtnl_get_net_ns_capable); static int rtnl_valid_dump_ifinfo_req(const struct nlmsghdr *nlh, bool strict_check, struct nlattr **tb, struct netlink_ext_ack *extack) { int hdrlen; if (strict_check) { struct ifinfomsg *ifm; if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { NL_SET_ERR_MSG(extack, "Invalid header for link dump"); return -EINVAL; } ifm = nlmsg_data(nlh); if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || ifm->ifi_change) { NL_SET_ERR_MSG(extack, "Invalid values in header for link dump request"); return -EINVAL; } if (ifm->ifi_index) { NL_SET_ERR_MSG(extack, "Filter by device index not supported for link dumps"); return -EINVAL; } return nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); } /* A hack to preserve kernel<->userspace interface. * The correct header is ifinfomsg. It is consistent with rtnl_getlink. * However, before Linux v3.9 the code here assumed rtgenmsg and that's * what iproute2 < v3.9.0 used. * We can detect the old iproute2. Even including the IFLA_EXT_MASK * attribute, its netlink message is shorter than struct ifinfomsg. */ hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); return nlmsg_parse_deprecated(nlh, hdrlen, tb, IFLA_MAX, ifla_policy, extack); } static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) { struct netlink_ext_ack *extack = cb->extack; struct rtnl_link_ops *kind_ops = NULL; const struct nlmsghdr *nlh = cb->nlh; struct net *net = sock_net(skb->sk); unsigned int flags = NLM_F_MULTI; struct nlattr *tb[IFLA_MAX+1]; struct { unsigned long ifindex; } *ctx = (void *)cb->ctx; struct net *tgt_net = net; u32 ext_filter_mask = 0; struct net_device *dev; int ops_srcu_index; int master_idx = 0; int netnsid = -1; int err, i; err = rtnl_valid_dump_ifinfo_req(nlh, cb->strict_check, tb, extack); if (err < 0) { if (cb->strict_check) return err; goto walk_entries; } for (i = 0; i <= IFLA_MAX; ++i) { if (!tb[i]) continue; /* new attributes should only be added with strict checking */ switch (i) { case IFLA_TARGET_NETNSID: netnsid = nla_get_s32(tb[i]); tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid); if (IS_ERR(tgt_net)) { NL_SET_ERR_MSG(extack, "Invalid target network namespace id"); err = PTR_ERR(tgt_net); netnsid = -1; goto out; } break; case IFLA_EXT_MASK: ext_filter_mask = nla_get_u32(tb[i]); break; case IFLA_MASTER: master_idx = nla_get_u32(tb[i]); break; case IFLA_LINKINFO: kind_ops = linkinfo_to_kind_ops(tb[i], &ops_srcu_index); break; default: if (cb->strict_check) { NL_SET_ERR_MSG(extack, "Unsupported attribute in link dump request"); err = -EINVAL; goto out; } } } if (master_idx || kind_ops) flags |= NLM_F_DUMP_FILTERED; walk_entries: err = 0; for_each_netdev_dump(tgt_net, dev, ctx->ifindex) { if (link_dump_filtered(dev, master_idx, kind_ops)) continue; err = rtnl_fill_ifinfo(skb, dev, net, RTM_NEWLINK, NETLINK_CB(cb->skb).portid, nlh->nlmsg_seq, 0, flags, ext_filter_mask, 0, NULL, 0, netnsid, GFP_KERNEL); if (err < 0) break; } cb->seq = tgt_net->dev_base_seq; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); out: if (kind_ops) rtnl_link_ops_put(kind_ops, ops_srcu_index); if (netnsid >= 0) put_net(tgt_net); return err; } int rtnl_nla_parse_ifinfomsg(struct nlattr **tb, const struct nlattr *nla_peer, struct netlink_ext_ack *exterr) { const struct ifinfomsg *ifmp; const struct nlattr *attrs; size_t len; ifmp = nla_data(nla_peer); attrs = nla_data(nla_peer) + sizeof(struct ifinfomsg); len = nla_len(nla_peer) - sizeof(struct ifinfomsg); if (ifmp->ifi_index < 0) { NL_SET_ERR_MSG_ATTR(exterr, nla_peer, "ifindex can't be negative"); return -EINVAL; } return nla_parse_deprecated(tb, IFLA_MAX, attrs, len, ifla_policy, exterr); } EXPORT_SYMBOL(rtnl_nla_parse_ifinfomsg); static struct net *rtnl_link_get_net_ifla(struct nlattr *tb[]) { struct net *net = NULL; /* Examine the link attributes and figure out which * network namespace we are talking about. */ if (tb[IFLA_NET_NS_PID]) net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); else if (tb[IFLA_NET_NS_FD]) net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); return net; } struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) { struct net *net = rtnl_link_get_net_ifla(tb); if (!net) net = get_net(src_net); return net; } EXPORT_SYMBOL(rtnl_link_get_net); /* Figure out which network namespace we are talking about by * examining the link attributes in the following order: * * 1. IFLA_NET_NS_PID * 2. IFLA_NET_NS_FD * 3. IFLA_TARGET_NETNSID */ static struct net *rtnl_link_get_net_by_nlattr(struct net *src_net, struct nlattr *tb[]) { struct net *net; if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) return rtnl_link_get_net(src_net, tb); if (!tb[IFLA_TARGET_NETNSID]) return get_net(src_net); net = get_net_ns_by_id(src_net, nla_get_u32(tb[IFLA_TARGET_NETNSID])); if (!net) return ERR_PTR(-EINVAL); return net; } static struct net *rtnl_link_get_net_capable(const struct sk_buff *skb, struct net *src_net, struct nlattr *tb[], int cap) { struct net *net; net = rtnl_link_get_net_by_nlattr(src_net, tb); if (IS_ERR(net)) return net; if (!netlink_ns_capable(skb, net->user_ns, cap)) { put_net(net); return ERR_PTR(-EPERM); } return net; } /* Verify that rtnetlink requests do not pass additional properties * potentially referring to different network namespaces. */ static int rtnl_ensure_unique_netns(struct nlattr *tb[], struct netlink_ext_ack *extack, bool netns_id_only) { if (netns_id_only) { if (!tb[IFLA_NET_NS_PID] && !tb[IFLA_NET_NS_FD]) return 0; NL_SET_ERR_MSG(extack, "specified netns attribute not supported"); return -EOPNOTSUPP; } if (tb[IFLA_TARGET_NETNSID] && (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD])) goto invalid_attr; if (tb[IFLA_NET_NS_PID] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_FD])) goto invalid_attr; if (tb[IFLA_NET_NS_FD] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_PID])) goto invalid_attr; return 0; invalid_attr: NL_SET_ERR_MSG(extack, "multiple netns identifying attributes specified"); return -EINVAL; } static int rtnl_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, int max_tx_rate) { const struct net_device_ops *ops = dev->netdev_ops; if (!ops->ndo_set_vf_rate) return -EOPNOTSUPP; if (max_tx_rate && max_tx_rate < min_tx_rate) return -EINVAL; return ops->ndo_set_vf_rate(dev, vf, min_tx_rate, max_tx_rate); } static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[], struct netlink_ext_ack *extack) { if (tb[IFLA_ADDRESS] && nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) return -EINVAL; if (tb[IFLA_BROADCAST] && nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) return -EINVAL; if (tb[IFLA_GSO_MAX_SIZE] && nla_get_u32(tb[IFLA_GSO_MAX_SIZE]) > dev->tso_max_size) { NL_SET_ERR_MSG(extack, "too big gso_max_size"); return -EINVAL; } if (tb[IFLA_GSO_MAX_SEGS] && (nla_get_u32(tb[IFLA_GSO_MAX_SEGS]) > GSO_MAX_SEGS || nla_get_u32(tb[IFLA_GSO_MAX_SEGS]) > dev->tso_max_segs)) { NL_SET_ERR_MSG(extack, "too big gso_max_segs"); return -EINVAL; } if (tb[IFLA_GRO_MAX_SIZE] && nla_get_u32(tb[IFLA_GRO_MAX_SIZE]) > GRO_MAX_SIZE) { NL_SET_ERR_MSG(extack, "too big gro_max_size"); return -EINVAL; } if (tb[IFLA_GSO_IPV4_MAX_SIZE] && nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]) > dev->tso_max_size) { NL_SET_ERR_MSG(extack, "too big gso_ipv4_max_size"); return -EINVAL; } if (tb[IFLA_GRO_IPV4_MAX_SIZE] && nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]) > GRO_MAX_SIZE) { NL_SET_ERR_MSG(extack, "too big gro_ipv4_max_size"); return -EINVAL; } if (tb[IFLA_AF_SPEC]) { struct nlattr *af; int rem, err; nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { struct rtnl_af_ops *af_ops; int af_ops_srcu_index; af_ops = rtnl_af_lookup(nla_type(af), &af_ops_srcu_index); if (!af_ops) return -EAFNOSUPPORT; if (!af_ops->set_link_af) err = -EOPNOTSUPP; else if (af_ops->validate_link_af) err = af_ops->validate_link_af(dev, af, extack); else err = 0; rtnl_af_put(af_ops, af_ops_srcu_index); if (err < 0) return err; } } return 0; } static int handle_infiniband_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type) { const struct net_device_ops *ops = dev->netdev_ops; return ops->ndo_set_vf_guid(dev, ivt->vf, ivt->guid, guid_type); } static int handle_vf_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type) { if (dev->type != ARPHRD_INFINIBAND) return -EOPNOTSUPP; return handle_infiniband_guid(dev, ivt, guid_type); } static int do_setvfinfo(struct net_device *dev, struct nlattr **tb) { const struct net_device_ops *ops = dev->netdev_ops; int err = -EINVAL; if (tb[IFLA_VF_MAC]) { struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]); if (ivm->vf >= INT_MAX) return -EINVAL; err = -EOPNOTSUPP; if (ops->ndo_set_vf_mac) err = ops->ndo_set_vf_mac(dev, ivm->vf, ivm->mac); if (err < 0) return err; } if (tb[IFLA_VF_VLAN]) { struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]); if (ivv->vf >= INT_MAX) return -EINVAL; err = -EOPNOTSUPP; if (ops->ndo_set_vf_vlan) err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan, ivv->qos, htons(ETH_P_8021Q)); if (err < 0) return err; } if (tb[IFLA_VF_VLAN_LIST]) { struct ifla_vf_vlan_info *ivvl[MAX_VLAN_LIST_LEN]; struct nlattr *attr; int rem, len = 0; err = -EOPNOTSUPP; if (!ops->ndo_set_vf_vlan) return err; nla_for_each_nested(attr, tb[IFLA_VF_VLAN_LIST], rem) { if (nla_type(attr) != IFLA_VF_VLAN_INFO || nla_len(attr) < sizeof(struct ifla_vf_vlan_info)) { return -EINVAL; } if (len >= MAX_VLAN_LIST_LEN) return -EOPNOTSUPP; ivvl[len] = nla_data(attr); len++; } if (len == 0) return -EINVAL; if (ivvl[0]->vf >= INT_MAX) return -EINVAL; err = ops->ndo_set_vf_vlan(dev, ivvl[0]->vf, ivvl[0]->vlan, ivvl[0]->qos, ivvl[0]->vlan_proto); if (err < 0) return err; } if (tb[IFLA_VF_TX_RATE]) { struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]); struct ifla_vf_info ivf; if (ivt->vf >= INT_MAX) return -EINVAL; err = -EOPNOTSUPP; if (ops->ndo_get_vf_config) err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf); if (err < 0) return err; err = rtnl_set_vf_rate(dev, ivt->vf, ivf.min_tx_rate, ivt->rate); if (err < 0) return err; } if (tb[IFLA_VF_RATE]) { struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]); if (ivt->vf >= INT_MAX) return -EINVAL; err = rtnl_set_vf_rate(dev, ivt->vf, ivt->min_tx_rate, ivt->max_tx_rate); if (err < 0) return err; } if (tb[IFLA_VF_SPOOFCHK]) { struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]); if (ivs->vf >= INT_MAX) return -EINVAL; err = -EOPNOTSUPP; if (ops->ndo_set_vf_spoofchk) err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, ivs->setting); if (err < 0) return err; } if (tb[IFLA_VF_LINK_STATE]) { struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]); if (ivl->vf >= INT_MAX) return -EINVAL; err = -EOPNOTSUPP; if (ops->ndo_set_vf_link_state) err = ops->ndo_set_vf_link_state(dev, ivl->vf, ivl->link_state); if (err < 0) return err; } if (tb[IFLA_VF_RSS_QUERY_EN]) { struct ifla_vf_rss_query_en *ivrssq_en; err = -EOPNOTSUPP; ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]); if (ivrssq_en->vf >= INT_MAX) return -EINVAL; if (ops->ndo_set_vf_rss_query_en) err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf, ivrssq_en->setting); if (err < 0) return err; } if (tb[IFLA_VF_TRUST]) { struct ifla_vf_trust *ivt = nla_data(tb[IFLA_VF_TRUST]); if (ivt->vf >= INT_MAX) return -EINVAL; err = -EOPNOTSUPP; if (ops->ndo_set_vf_trust) err = ops->ndo_set_vf_trust(dev, ivt->vf, ivt->setting); if (err < 0) return err; } if (tb[IFLA_VF_IB_NODE_GUID]) { struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_NODE_GUID]); if (ivt->vf >= INT_MAX) return -EINVAL; if (!ops->ndo_set_vf_guid) return -EOPNOTSUPP; return handle_vf_guid(dev, ivt, IFLA_VF_IB_NODE_GUID); } if (tb[IFLA_VF_IB_PORT_GUID]) { struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_PORT_GUID]); if (ivt->vf >= INT_MAX) return -EINVAL; if (!ops->ndo_set_vf_guid) return -EOPNOTSUPP; return handle_vf_guid(dev, ivt, IFLA_VF_IB_PORT_GUID); } return err; } static int do_set_master(struct net_device *dev, int ifindex, struct netlink_ext_ack *extack) { struct net_device *upper_dev = netdev_master_upper_dev_get(dev); const struct net_device_ops *ops; int err; /* Release the lower lock, the upper is responsible for locking * the lower if needed. None of the existing upper devices * use netdev instance lock, so don't grab it. */ if (upper_dev) { if (upper_dev->ifindex == ifindex) return 0; ops = upper_dev->netdev_ops; if (ops->ndo_del_slave) { netdev_unlock_ops(dev); err = ops->ndo_del_slave(upper_dev, dev); netdev_lock_ops(dev); if (err) return err; } else { return -EOPNOTSUPP; } } if (ifindex) { upper_dev = __dev_get_by_index(dev_net(dev), ifindex); if (!upper_dev) return -EINVAL; ops = upper_dev->netdev_ops; if (ops->ndo_add_slave) { netdev_unlock_ops(dev); err = ops->ndo_add_slave(upper_dev, dev, extack); netdev_lock_ops(dev); if (err) return err; } else { return -EOPNOTSUPP; } } return 0; } static const struct nla_policy ifla_proto_down_reason_policy[IFLA_PROTO_DOWN_REASON_VALUE + 1] = { [IFLA_PROTO_DOWN_REASON_MASK] = { .type = NLA_U32 }, [IFLA_PROTO_DOWN_REASON_VALUE] = { .type = NLA_U32 }, }; static int do_set_proto_down(struct net_device *dev, struct nlattr *nl_proto_down, struct nlattr *nl_proto_down_reason, struct netlink_ext_ack *extack) { struct nlattr *pdreason[IFLA_PROTO_DOWN_REASON_MAX + 1]; unsigned long mask = 0; u32 value; bool proto_down; int err; if (!dev->change_proto_down) { NL_SET_ERR_MSG(extack, "Protodown not supported by device"); return -EOPNOTSUPP; } if (nl_proto_down_reason) { err = nla_parse_nested_deprecated(pdreason, IFLA_PROTO_DOWN_REASON_MAX, nl_proto_down_reason, ifla_proto_down_reason_policy, NULL); if (err < 0) return err; if (!pdreason[IFLA_PROTO_DOWN_REASON_VALUE]) { NL_SET_ERR_MSG(extack, "Invalid protodown reason value"); return -EINVAL; } value = nla_get_u32(pdreason[IFLA_PROTO_DOWN_REASON_VALUE]); if (pdreason[IFLA_PROTO_DOWN_REASON_MASK]) mask = nla_get_u32(pdreason[IFLA_PROTO_DOWN_REASON_MASK]); netdev_change_proto_down_reason_locked(dev, mask, value); } if (nl_proto_down) { proto_down = nla_get_u8(nl_proto_down); /* Don't turn off protodown if there are active reasons */ if (!proto_down && dev->proto_down_reason) { NL_SET_ERR_MSG(extack, "Cannot clear protodown, active reasons"); return -EBUSY; } err = netif_change_proto_down(dev, proto_down); if (err) return err; } return 0; } #define DO_SETLINK_MODIFIED 0x01 /* notify flag means notify + modified. */ #define DO_SETLINK_NOTIFY 0x03 static int do_setlink(const struct sk_buff *skb, struct net_device *dev, struct net *tgt_net, struct ifinfomsg *ifm, struct netlink_ext_ack *extack, struct nlattr **tb, int status) { const struct net_device_ops *ops = dev->netdev_ops; char ifname[IFNAMSIZ]; int err; err = validate_linkmsg(dev, tb, extack); if (err < 0) return err; if (tb[IFLA_IFNAME]) nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); else ifname[0] = '\0'; if (!net_eq(tgt_net, dev_net(dev))) { const char *pat = ifname[0] ? ifname : NULL; int new_ifindex; new_ifindex = nla_get_s32_default(tb[IFLA_NEW_IFINDEX], 0); err = __dev_change_net_namespace(dev, tgt_net, pat, new_ifindex, extack); if (err) return err; status |= DO_SETLINK_MODIFIED; } netdev_lock_ops(dev); if (tb[IFLA_MAP]) { struct rtnl_link_ifmap *u_map; struct ifmap k_map; if (!ops->ndo_set_config) { err = -EOPNOTSUPP; goto errout; } if (!netif_device_present(dev)) { err = -ENODEV; goto errout; } u_map = nla_data(tb[IFLA_MAP]); k_map.mem_start = (unsigned long) u_map->mem_start; k_map.mem_end = (unsigned long) u_map->mem_end; k_map.base_addr = (unsigned short) u_map->base_addr; k_map.irq = (unsigned char) u_map->irq; k_map.dma = (unsigned char) u_map->dma; k_map.port = (unsigned char) u_map->port; err = ops->ndo_set_config(dev, &k_map); if (err < 0) goto errout; status |= DO_SETLINK_NOTIFY; } if (tb[IFLA_ADDRESS]) { struct sockaddr *sa; int len; len = sizeof(sa_family_t) + max_t(size_t, dev->addr_len, sizeof(*sa)); sa = kmalloc(len, GFP_KERNEL); if (!sa) { err = -ENOMEM; goto errout; } sa->sa_family = dev->type; netdev_unlock_ops(dev); /* dev_addr_sem is an outer lock, enforce proper ordering */ down_write(&dev_addr_sem); netdev_lock_ops(dev); memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), dev->addr_len); err = netif_set_mac_address(dev, sa, extack); kfree(sa); if (err) { up_write(&dev_addr_sem); goto errout; } status |= DO_SETLINK_MODIFIED; up_write(&dev_addr_sem); } if (tb[IFLA_MTU]) { err = netif_set_mtu_ext(dev, nla_get_u32(tb[IFLA_MTU]), extack); if (err < 0) goto errout; status |= DO_SETLINK_MODIFIED; } if (tb[IFLA_GROUP]) { netif_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); status |= DO_SETLINK_NOTIFY; } /* * Interface selected by interface index but interface * name provided implies that a name change has been * requested. */ if (ifm->ifi_index > 0 && ifname[0]) { err = netif_change_name(dev, ifname); if (err < 0) goto errout; status |= DO_SETLINK_MODIFIED; } if (tb[IFLA_IFALIAS]) { err = netif_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), nla_len(tb[IFLA_IFALIAS])); if (err < 0) goto errout; status |= DO_SETLINK_NOTIFY; } if (tb[IFLA_BROADCAST]) { nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); } if (ifm->ifi_flags || ifm->ifi_change) { err = netif_change_flags(dev, rtnl_dev_combine_flags(dev, ifm), extack); if (err < 0) goto errout; } if (tb[IFLA_MASTER]) { err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack); if (err) goto errout; status |= DO_SETLINK_MODIFIED; } if (tb[IFLA_CARRIER]) { err = netif_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); if (err) goto errout; status |= DO_SETLINK_MODIFIED; } if (tb[IFLA_TXQLEN]) { unsigned int value = nla_get_u32(tb[IFLA_TXQLEN]); err = netif_change_tx_queue_len(dev, value); if (err) goto errout; status |= DO_SETLINK_MODIFIED; } if (tb[IFLA_GSO_MAX_SIZE]) { u32 max_size = nla_get_u32(tb[IFLA_GSO_MAX_SIZE]); if (dev->gso_max_size ^ max_size) { netif_set_gso_max_size(dev, max_size); status |= DO_SETLINK_MODIFIED; } } if (tb[IFLA_GSO_MAX_SEGS]) { u32 max_segs = nla_get_u32(tb[IFLA_GSO_MAX_SEGS]); if (dev->gso_max_segs ^ max_segs) { netif_set_gso_max_segs(dev, max_segs); status |= DO_SETLINK_MODIFIED; } } if (tb[IFLA_GRO_MAX_SIZE]) { u32 gro_max_size = nla_get_u32(tb[IFLA_GRO_MAX_SIZE]); if (dev->gro_max_size ^ gro_max_size) { netif_set_gro_max_size(dev, gro_max_size); status |= DO_SETLINK_MODIFIED; } } if (tb[IFLA_GSO_IPV4_MAX_SIZE]) { u32 max_size = nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]); if (dev->gso_ipv4_max_size ^ max_size) { netif_set_gso_ipv4_max_size(dev, max_size); status |= DO_SETLINK_MODIFIED; } } if (tb[IFLA_GRO_IPV4_MAX_SIZE]) { u32 gro_max_size = nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]); if (dev->gro_ipv4_max_size ^ gro_max_size) { netif_set_gro_ipv4_max_size(dev, gro_max_size); status |= DO_SETLINK_MODIFIED; } } if (tb[IFLA_OPERSTATE]) set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); if (tb[IFLA_LINKMODE]) { unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); if (dev->link_mode ^ value) status |= DO_SETLINK_NOTIFY; WRITE_ONCE(dev->link_mode, value); } if (tb[IFLA_VFINFO_LIST]) { struct nlattr *vfinfo[IFLA_VF_MAX + 1]; struct nlattr *attr; int rem; nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { if (nla_type(attr) != IFLA_VF_INFO || nla_len(attr) < NLA_HDRLEN) { err = -EINVAL; goto errout; } err = nla_parse_nested_deprecated(vfinfo, IFLA_VF_MAX, attr, ifla_vf_policy, NULL); if (err < 0) goto errout; err = do_setvfinfo(dev, vfinfo); if (err < 0) goto errout; status |= DO_SETLINK_NOTIFY; } } err = 0; if (tb[IFLA_VF_PORTS]) { struct nlattr *port[IFLA_PORT_MAX+1]; struct nlattr *attr; int vf; int rem; err = -EOPNOTSUPP; if (!ops->ndo_set_vf_port) goto errout; nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { if (nla_type(attr) != IFLA_VF_PORT || nla_len(attr) < NLA_HDRLEN) { err = -EINVAL; goto errout; } err = nla_parse_nested_deprecated(port, IFLA_PORT_MAX, attr, ifla_port_policy, NULL); if (err < 0) goto errout; if (!port[IFLA_PORT_VF]) { err = -EOPNOTSUPP; goto errout; } vf = nla_get_u32(port[IFLA_PORT_VF]); err = ops->ndo_set_vf_port(dev, vf, port); if (err < 0) goto errout; status |= DO_SETLINK_NOTIFY; } } err = 0; if (tb[IFLA_PORT_SELF]) { struct nlattr *port[IFLA_PORT_MAX+1]; err = nla_parse_nested_deprecated(port, IFLA_PORT_MAX, tb[IFLA_PORT_SELF], ifla_port_policy, NULL); if (err < 0) goto errout; err = -EOPNOTSUPP; if (ops->ndo_set_vf_port) err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); if (err < 0) goto errout; status |= DO_SETLINK_NOTIFY; } if (tb[IFLA_AF_SPEC]) { struct nlattr *af; int rem; nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { struct rtnl_af_ops *af_ops; int af_ops_srcu_index; af_ops = rtnl_af_lookup(nla_type(af), &af_ops_srcu_index); if (!af_ops) { err = -EAFNOSUPPORT; goto errout; } err = af_ops->set_link_af(dev, af, extack); rtnl_af_put(af_ops, af_ops_srcu_index); if (err < 0) goto errout; status |= DO_SETLINK_NOTIFY; } } err = 0; if (tb[IFLA_PROTO_DOWN] || tb[IFLA_PROTO_DOWN_REASON]) { err = do_set_proto_down(dev, tb[IFLA_PROTO_DOWN], tb[IFLA_PROTO_DOWN_REASON], extack); if (err) goto errout; status |= DO_SETLINK_NOTIFY; } if (tb[IFLA_XDP]) { struct nlattr *xdp[IFLA_XDP_MAX + 1]; u32 xdp_flags = 0; err = nla_parse_nested_deprecated(xdp, IFLA_XDP_MAX, tb[IFLA_XDP], ifla_xdp_policy, NULL); if (err < 0) goto errout; if (xdp[IFLA_XDP_ATTACHED] || xdp[IFLA_XDP_PROG_ID]) { err = -EINVAL; goto errout; } if (xdp[IFLA_XDP_FLAGS]) { xdp_flags = nla_get_u32(xdp[IFLA_XDP_FLAGS]); if (xdp_flags & ~XDP_FLAGS_MASK) { err = -EINVAL; goto errout; } if (hweight32(xdp_flags & XDP_FLAGS_MODES) > 1) { err = -EINVAL; goto errout; } } if (xdp[IFLA_XDP_FD]) { int expected_fd = -1; if (xdp_flags & XDP_FLAGS_REPLACE) { if (!xdp[IFLA_XDP_EXPECTED_FD]) { err = -EINVAL; goto errout; } expected_fd = nla_get_s32(xdp[IFLA_XDP_EXPECTED_FD]); } err = dev_change_xdp_fd(dev, extack, nla_get_s32(xdp[IFLA_XDP_FD]), expected_fd, xdp_flags); if (err) goto errout; status |= DO_SETLINK_NOTIFY; } } errout: if (status & DO_SETLINK_MODIFIED) { if ((status & DO_SETLINK_NOTIFY) == DO_SETLINK_NOTIFY) netif_state_change(dev); if (err < 0) net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n", dev->name); } netdev_unlock_ops(dev); return err; } static struct net_device *rtnl_dev_get(struct net *net, struct nlattr *tb[]) { char ifname[ALTIFNAMSIZ]; if (tb[IFLA_IFNAME]) nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); else if (tb[IFLA_ALT_IFNAME]) nla_strscpy(ifname, tb[IFLA_ALT_IFNAME], ALTIFNAMSIZ); else return NULL; return __dev_get_by_name(net, ifname); } static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct ifinfomsg *ifm = nlmsg_data(nlh); struct net *net = sock_net(skb->sk); struct nlattr *tb[IFLA_MAX+1]; struct net_device *dev = NULL; struct rtnl_nets rtnl_nets; struct net *tgt_net; int err; err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); if (err < 0) goto errout; err = rtnl_ensure_unique_netns(tb, extack, false); if (err < 0) goto errout; tgt_net = rtnl_link_get_net_capable(skb, net, tb, CAP_NET_ADMIN); if (IS_ERR(tgt_net)) { err = PTR_ERR(tgt_net); goto errout; } rtnl_nets_init(&rtnl_nets); rtnl_nets_add(&rtnl_nets, get_net(net)); rtnl_nets_add(&rtnl_nets, tgt_net); rtnl_nets_lock(&rtnl_nets); if (ifm->ifi_index > 0) dev = __dev_get_by_index(net, ifm->ifi_index); else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) dev = rtnl_dev_get(net, tb); else err = -EINVAL; if (dev) err = do_setlink(skb, dev, tgt_net, ifm, extack, tb, 0); else if (!err) err = -ENODEV; rtnl_nets_unlock(&rtnl_nets); rtnl_nets_destroy(&rtnl_nets); errout: return err; } static int rtnl_group_dellink(const struct net *net, int group) { struct net_device *dev, *aux; LIST_HEAD(list_kill); bool found = false; if (!group) return -EPERM; for_each_netdev(net, dev) { if (dev->group == group) { const struct rtnl_link_ops *ops; found = true; ops = dev->rtnl_link_ops; if (!ops || !ops->dellink) return -EOPNOTSUPP; } } if (!found) return -ENODEV; for_each_netdev_safe(net, dev, aux) { if (dev->group == group) { const struct rtnl_link_ops *ops; ops = dev->rtnl_link_ops; ops->dellink(dev, &list_kill); } } unregister_netdevice_many(&list_kill); return 0; } int rtnl_delete_link(struct net_device *dev, u32 portid, const struct nlmsghdr *nlh) { const struct rtnl_link_ops *ops; LIST_HEAD(list_kill); ops = dev->rtnl_link_ops; if (!ops || !ops->dellink) return -EOPNOTSUPP; ops->dellink(dev, &list_kill); unregister_netdevice_many_notify(&list_kill, portid, nlh); return 0; } EXPORT_SYMBOL_GPL(rtnl_delete_link); static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct ifinfomsg *ifm = nlmsg_data(nlh); struct net *net = sock_net(skb->sk); u32 portid = NETLINK_CB(skb).portid; struct nlattr *tb[IFLA_MAX+1]; struct net_device *dev = NULL; struct net *tgt_net = net; int netnsid = -1; int err; err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); if (err < 0) return err; err = rtnl_ensure_unique_netns(tb, extack, true); if (err < 0) return err; if (tb[IFLA_TARGET_NETNSID]) { netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]); tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); if (IS_ERR(tgt_net)) return PTR_ERR(tgt_net); } rtnl_net_lock(tgt_net); if (ifm->ifi_index > 0) dev = __dev_get_by_index(tgt_net, ifm->ifi_index); else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) dev = rtnl_dev_get(tgt_net, tb); if (dev) err = rtnl_delete_link(dev, portid, nlh); else if (ifm->ifi_index > 0 || tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) err = -ENODEV; else if (tb[IFLA_GROUP]) err = rtnl_group_dellink(tgt_net, nla_get_u32(tb[IFLA_GROUP])); else err = -EINVAL; rtnl_net_unlock(tgt_net); if (netnsid >= 0) put_net(tgt_net); return err; } int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm, u32 portid, const struct nlmsghdr *nlh) { unsigned int old_flags; int err; old_flags = dev->flags; if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm), NULL); if (err < 0) return err; } if (dev->rtnl_link_state == RTNL_LINK_INITIALIZED) { __dev_notify_flags(dev, old_flags, (old_flags ^ dev->flags), portid, nlh); } else { dev->rtnl_link_state = RTNL_LINK_INITIALIZED; __dev_notify_flags(dev, old_flags, ~0U, portid, nlh); } return 0; } EXPORT_SYMBOL(rtnl_configure_link); struct net_device *rtnl_create_link(struct net *net, const char *ifname, unsigned char name_assign_type, const struct rtnl_link_ops *ops, struct nlattr *tb[], struct netlink_ext_ack *extack) { struct net_device *dev; unsigned int num_tx_queues = 1; unsigned int num_rx_queues = 1; int err; if (tb[IFLA_NUM_TX_QUEUES]) num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); else if (ops->get_num_tx_queues) num_tx_queues = ops->get_num_tx_queues(); if (tb[IFLA_NUM_RX_QUEUES]) num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); else if (ops->get_num_rx_queues) num_rx_queues = ops->get_num_rx_queues(); if (num_tx_queues < 1 || num_tx_queues > 4096) { NL_SET_ERR_MSG(extack, "Invalid number of transmit queues"); return ERR_PTR(-EINVAL); } if (num_rx_queues < 1 || num_rx_queues > 4096) { NL_SET_ERR_MSG(extack, "Invalid number of receive queues"); return ERR_PTR(-EINVAL); } if (ops->alloc) { dev = ops->alloc(tb, ifname, name_assign_type, num_tx_queues, num_rx_queues); if (IS_ERR(dev)) return dev; } else { dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type, ops->setup, num_tx_queues, num_rx_queues); } if (!dev) return ERR_PTR(-ENOMEM); err = validate_linkmsg(dev, tb, extack); if (err < 0) { free_netdev(dev); return ERR_PTR(err); } dev_net_set(dev, net); dev->rtnl_link_ops = ops; dev->rtnl_link_state = RTNL_LINK_INITIALIZING; if (tb[IFLA_MTU]) { u32 mtu = nla_get_u32(tb[IFLA_MTU]); err = dev_validate_mtu(dev, mtu, extack); if (err) { free_netdev(dev); return ERR_PTR(err); } dev->mtu = mtu; } if (tb[IFLA_ADDRESS]) { __dev_addr_set(dev, nla_data(tb[IFLA_ADDRESS]), nla_len(tb[IFLA_ADDRESS])); dev->addr_assign_type = NET_ADDR_SET; } if (tb[IFLA_BROADCAST]) memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), nla_len(tb[IFLA_BROADCAST])); if (tb[IFLA_TXQLEN]) dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); if (tb[IFLA_OPERSTATE]) set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); if (tb[IFLA_LINKMODE]) dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); if (tb[IFLA_GROUP]) dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); if (tb[IFLA_GSO_MAX_SIZE]) netif_set_gso_max_size(dev, nla_get_u32(tb[IFLA_GSO_MAX_SIZE])); if (tb[IFLA_GSO_MAX_SEGS]) netif_set_gso_max_segs(dev, nla_get_u32(tb[IFLA_GSO_MAX_SEGS])); if (tb[IFLA_GRO_MAX_SIZE]) netif_set_gro_max_size(dev, nla_get_u32(tb[IFLA_GRO_MAX_SIZE])); if (tb[IFLA_GSO_IPV4_MAX_SIZE]) netif_set_gso_ipv4_max_size(dev, nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE])); if (tb[IFLA_GRO_IPV4_MAX_SIZE]) netif_set_gro_ipv4_max_size(dev, nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE])); return dev; } EXPORT_SYMBOL(rtnl_create_link); struct rtnl_newlink_tbs { struct nlattr *tb[IFLA_MAX + 1]; struct nlattr *linkinfo[IFLA_INFO_MAX + 1]; struct nlattr *attr[RTNL_MAX_TYPE + 1]; struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1]; }; static int rtnl_changelink(const struct sk_buff *skb, struct nlmsghdr *nlh, const struct rtnl_link_ops *ops, struct net_device *dev, struct net *tgt_net, struct rtnl_newlink_tbs *tbs, struct nlattr **data, struct netlink_ext_ack *extack) { struct nlattr ** const linkinfo = tbs->linkinfo; struct nlattr ** const tb = tbs->tb; int status = 0; int err; if (nlh->nlmsg_flags & NLM_F_EXCL) return -EEXIST; if (nlh->nlmsg_flags & NLM_F_REPLACE) return -EOPNOTSUPP; if (linkinfo[IFLA_INFO_DATA]) { if (!ops || ops != dev->rtnl_link_ops || !ops->changelink) return -EOPNOTSUPP; err = ops->changelink(dev, tb, data, extack); if (err < 0) return err; status |= DO_SETLINK_NOTIFY; } if (linkinfo[IFLA_INFO_SLAVE_DATA]) { const struct rtnl_link_ops *m_ops = NULL; struct nlattr **slave_data = NULL; struct net_device *master_dev; master_dev = netdev_master_upper_dev_get(dev); if (master_dev) m_ops = master_dev->rtnl_link_ops; if (!m_ops || !m_ops->slave_changelink) return -EOPNOTSUPP; if (m_ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE) return -EINVAL; if (m_ops->slave_maxtype) { err = nla_parse_nested_deprecated(tbs->slave_attr, m_ops->slave_maxtype, linkinfo[IFLA_INFO_SLAVE_DATA], m_ops->slave_policy, extack); if (err < 0) return err; slave_data = tbs->slave_attr; } err = m_ops->slave_changelink(master_dev, dev, tb, slave_data, extack); if (err < 0) return err; status |= DO_SETLINK_NOTIFY; } return do_setlink(skb, dev, tgt_net, nlmsg_data(nlh), extack, tb, status); } static int rtnl_group_changelink(const struct sk_buff *skb, struct net *net, struct net *tgt_net, int group, struct ifinfomsg *ifm, struct netlink_ext_ack *extack, struct nlattr **tb) { struct net_device *dev, *aux; int err; for_each_netdev_safe(net, dev, aux) { if (dev->group == group) { err = do_setlink(skb, dev, tgt_net, ifm, extack, tb, 0); if (err < 0) return err; } } return 0; } static int rtnl_newlink_create(struct sk_buff *skb, struct ifinfomsg *ifm, const struct rtnl_link_ops *ops, struct net *tgt_net, struct net *link_net, struct net *peer_net, const struct nlmsghdr *nlh, struct nlattr **tb, struct nlattr **data, struct netlink_ext_ack *extack) { unsigned char name_assign_type = NET_NAME_USER; struct rtnl_newlink_params params = { .src_net = sock_net(skb->sk), .link_net = link_net, .peer_net = peer_net, .tb = tb, .data = data, }; u32 portid = NETLINK_CB(skb).portid; struct net_device *dev; char ifname[IFNAMSIZ]; int err; if (!ops->alloc && !ops->setup) return -EOPNOTSUPP; if (tb[IFLA_IFNAME]) { nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); } else { snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); name_assign_type = NET_NAME_ENUM; } dev = rtnl_create_link(tgt_net, ifname, name_assign_type, ops, tb, extack); if (IS_ERR(dev)) { err = PTR_ERR(dev); goto out; } dev->ifindex = ifm->ifi_index; if (ops->newlink) err = ops->newlink(dev, ¶ms, extack); else err = register_netdevice(dev); if (err < 0) { free_netdev(dev); goto out; } netdev_lock_ops(dev); err = rtnl_configure_link(dev, ifm, portid, nlh); if (err < 0) goto out_unregister; if (tb[IFLA_MASTER]) { err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack); if (err) goto out_unregister; } netdev_unlock_ops(dev); out: return err; out_unregister: netdev_unlock_ops(dev); if (ops->newlink) { LIST_HEAD(list_kill); ops->dellink(dev, &list_kill); unregister_netdevice_many(&list_kill); } else { unregister_netdevice(dev); } goto out; } static struct net *rtnl_get_peer_net(const struct rtnl_link_ops *ops, struct nlattr *tbp[], struct nlattr *data[], struct netlink_ext_ack *extack) { struct nlattr *tb[IFLA_MAX + 1]; int err; if (!data || !data[ops->peer_type]) return rtnl_link_get_net_ifla(tbp); err = rtnl_nla_parse_ifinfomsg(tb, data[ops->peer_type], extack); if (err < 0) return ERR_PTR(err); if (ops->validate) { err = ops->validate(tb, NULL, extack); if (err < 0) return ERR_PTR(err); } return rtnl_link_get_net_ifla(tb); } static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, const struct rtnl_link_ops *ops, struct net *tgt_net, struct net *link_net, struct net *peer_net, struct rtnl_newlink_tbs *tbs, struct nlattr **data, struct netlink_ext_ack *extack) { struct nlattr ** const tb = tbs->tb; struct net *net = sock_net(skb->sk); struct net *device_net; struct net_device *dev; struct ifinfomsg *ifm; bool link_specified; /* When creating, lookup for existing device in target net namespace */ device_net = (nlh->nlmsg_flags & NLM_F_CREATE) && (nlh->nlmsg_flags & NLM_F_EXCL) ? tgt_net : net; ifm = nlmsg_data(nlh); if (ifm->ifi_index > 0) { link_specified = true; dev = __dev_get_by_index(device_net, ifm->ifi_index); } else if (ifm->ifi_index < 0) { NL_SET_ERR_MSG(extack, "ifindex can't be negative"); return -EINVAL; } else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) { link_specified = true; dev = rtnl_dev_get(device_net, tb); } else { link_specified = false; dev = NULL; } if (dev) return rtnl_changelink(skb, nlh, ops, dev, tgt_net, tbs, data, extack); if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { /* No dev found and NLM_F_CREATE not set. Requested dev does not exist, * or it's for a group */ if (link_specified || !tb[IFLA_GROUP]) return -ENODEV; return rtnl_group_changelink(skb, net, tgt_net, nla_get_u32(tb[IFLA_GROUP]), ifm, extack, tb); } if (tb[IFLA_MAP] || tb[IFLA_PROTINFO]) return -EOPNOTSUPP; if (!ops) { NL_SET_ERR_MSG(extack, "Unknown device type"); return -EOPNOTSUPP; } return rtnl_newlink_create(skb, ifm, ops, tgt_net, link_net, peer_net, nlh, tb, data, extack); } static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *tgt_net, *link_net = NULL, *peer_net = NULL; struct nlattr **tb, **linkinfo, **data = NULL; struct rtnl_link_ops *ops = NULL; struct rtnl_newlink_tbs *tbs; struct rtnl_nets rtnl_nets; int ops_srcu_index; int ret; tbs = kmalloc(sizeof(*tbs), GFP_KERNEL); if (!tbs) return -ENOMEM; tb = tbs->tb; ret = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, ifla_policy, extack); if (ret < 0) goto free; ret = rtnl_ensure_unique_netns(tb, extack, false); if (ret < 0) goto free; linkinfo = tbs->linkinfo; if (tb[IFLA_LINKINFO]) { ret = nla_parse_nested_deprecated(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO], ifla_info_policy, NULL); if (ret < 0) goto free; } else { memset(linkinfo, 0, sizeof(tbs->linkinfo)); } if (linkinfo[IFLA_INFO_KIND]) { char kind[MODULE_NAME_LEN]; nla_strscpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); ops = rtnl_link_ops_get(kind, &ops_srcu_index); #ifdef CONFIG_MODULES if (!ops) { request_module("rtnl-link-%s", kind); ops = rtnl_link_ops_get(kind, &ops_srcu_index); } #endif } rtnl_nets_init(&rtnl_nets); if (ops) { if (ops->maxtype > RTNL_MAX_TYPE) { ret = -EINVAL; goto put_ops; } if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { ret = nla_parse_nested_deprecated(tbs->attr, ops->maxtype, linkinfo[IFLA_INFO_DATA], ops->policy, extack); if (ret < 0) goto put_ops; data = tbs->attr; } if (ops->validate) { ret = ops->validate(tb, data, extack); if (ret < 0) goto put_ops; } if (ops->peer_type) { peer_net = rtnl_get_peer_net(ops, tb, data, extack); if (IS_ERR(peer_net)) { ret = PTR_ERR(peer_net); goto put_ops; } if (peer_net) rtnl_nets_add(&rtnl_nets, peer_net); } } tgt_net = rtnl_link_get_net_capable(skb, sock_net(skb->sk), tb, CAP_NET_ADMIN); if (IS_ERR(tgt_net)) { ret = PTR_ERR(tgt_net); goto put_net; } rtnl_nets_add(&rtnl_nets, tgt_net); if (tb[IFLA_LINK_NETNSID]) { int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); link_net = get_net_ns_by_id(tgt_net, id); if (!link_net) { NL_SET_ERR_MSG(extack, "Unknown network namespace id"); ret = -EINVAL; goto put_net; } rtnl_nets_add(&rtnl_nets, link_net); if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) { ret = -EPERM; goto put_net; } } rtnl_nets_lock(&rtnl_nets); ret = __rtnl_newlink(skb, nlh, ops, tgt_net, link_net, peer_net, tbs, data, extack); rtnl_nets_unlock(&rtnl_nets); put_net: rtnl_nets_destroy(&rtnl_nets); put_ops: if (ops) rtnl_link_ops_put(ops, ops_srcu_index); free: kfree(tbs); return ret; } static int rtnl_valid_getlink_req(struct sk_buff *skb, const struct nlmsghdr *nlh, struct nlattr **tb, struct netlink_ext_ack *extack) { struct ifinfomsg *ifm; int i, err; if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { NL_SET_ERR_MSG(extack, "Invalid header for get link"); return -EINVAL; } if (!netlink_strict_get_check(skb)) return nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); ifm = nlmsg_data(nlh); if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || ifm->ifi_change) { NL_SET_ERR_MSG(extack, "Invalid values in header for get link request"); return -EINVAL; } err = nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); if (err) return err; for (i = 0; i <= IFLA_MAX; i++) { if (!tb[i]) continue; switch (i) { case IFLA_IFNAME: case IFLA_ALT_IFNAME: case IFLA_EXT_MASK: case IFLA_TARGET_NETNSID: break; default: NL_SET_ERR_MSG(extack, "Unsupported attribute in get link request"); return -EINVAL; } } return 0; } static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct net *tgt_net = net; struct ifinfomsg *ifm; struct nlattr *tb[IFLA_MAX+1]; struct net_device *dev = NULL; struct sk_buff *nskb; int netnsid = -1; int err; u32 ext_filter_mask = 0; err = rtnl_valid_getlink_req(skb, nlh, tb, extack); if (err < 0) return err; err = rtnl_ensure_unique_netns(tb, extack, true); if (err < 0) return err; if (tb[IFLA_TARGET_NETNSID]) { netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]); tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); if (IS_ERR(tgt_net)) return PTR_ERR(tgt_net); } if (tb[IFLA_EXT_MASK]) ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); err = -EINVAL; ifm = nlmsg_data(nlh); if (ifm->ifi_index > 0) dev = __dev_get_by_index(tgt_net, ifm->ifi_index); else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) dev = rtnl_dev_get(tgt_net, tb); else goto out; err = -ENODEV; if (dev == NULL) goto out; err = -ENOBUFS; nskb = nlmsg_new_large(if_nlmsg_size(dev, ext_filter_mask)); if (nskb == NULL) goto out; /* Synchronize the carrier state so we don't report a state * that we're not actually going to honour immediately; if * the driver just did a carrier off->on transition, we can * only TX if link watch work has run, but without this we'd * already report carrier on, even if it doesn't work yet. */ linkwatch_sync_dev(dev); err = rtnl_fill_ifinfo(nskb, dev, net, RTM_NEWLINK, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, 0, ext_filter_mask, 0, NULL, 0, netnsid, GFP_KERNEL); if (err < 0) { /* -EMSGSIZE implies BUG in if_nlmsg_size */ WARN_ON(err == -EMSGSIZE); kfree_skb(nskb); } else err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); out: if (netnsid >= 0) put_net(tgt_net); return err; } static int rtnl_alt_ifname(int cmd, struct net_device *dev, struct nlattr *attr, bool *changed, struct netlink_ext_ack *extack) { char *alt_ifname; size_t size; int err; err = nla_validate(attr, attr->nla_len, IFLA_MAX, ifla_policy, extack); if (err) return err; if (cmd == RTM_NEWLINKPROP) { size = rtnl_prop_list_size(dev); size += nla_total_size(ALTIFNAMSIZ); if (size >= U16_MAX) { NL_SET_ERR_MSG(extack, "effective property list too long"); return -EINVAL; } } alt_ifname = nla_strdup(attr, GFP_KERNEL_ACCOUNT); if (!alt_ifname) return -ENOMEM; if (cmd == RTM_NEWLINKPROP) { err = netdev_name_node_alt_create(dev, alt_ifname); if (!err) alt_ifname = NULL; } else if (cmd == RTM_DELLINKPROP) { err = netdev_name_node_alt_destroy(dev, alt_ifname); } else { WARN_ON_ONCE(1); err = -EINVAL; } kfree(alt_ifname); if (!err) *changed = true; return err; } static int rtnl_linkprop(int cmd, struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct nlattr *tb[IFLA_MAX + 1]; struct net_device *dev; struct ifinfomsg *ifm; bool changed = false; struct nlattr *attr; int err, rem; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); if (err) return err; err = rtnl_ensure_unique_netns(tb, extack, true); if (err) return err; ifm = nlmsg_data(nlh); if (ifm->ifi_index > 0) dev = __dev_get_by_index(net, ifm->ifi_index); else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) dev = rtnl_dev_get(net, tb); else return -EINVAL; if (!dev) return -ENODEV; if (!tb[IFLA_PROP_LIST]) return 0; nla_for_each_nested(attr, tb[IFLA_PROP_LIST], rem) { switch (nla_type(attr)) { case IFLA_ALT_IFNAME: err = rtnl_alt_ifname(cmd, dev, attr, &changed, extack); if (err) return err; break; } } if (changed) netdev_state_change(dev); return 0; } static int rtnl_newlinkprop(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { return rtnl_linkprop(RTM_NEWLINKPROP, skb, nlh, extack); } static int rtnl_dellinkprop(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { return rtnl_linkprop(RTM_DELLINKPROP, skb, nlh, extack); } static noinline_for_stack u32 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); size_t min_ifinfo_dump_size = 0; u32 ext_filter_mask = 0; struct net_device *dev; struct nlattr *nla; int hdrlen, rem; /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) return NLMSG_GOODSIZE; nla_for_each_attr_type(nla, IFLA_EXT_MASK, nlmsg_attrdata(nlh, hdrlen), nlmsg_attrlen(nlh, hdrlen), rem) { if (nla_len(nla) == sizeof(u32)) ext_filter_mask = nla_get_u32(nla); } if (!ext_filter_mask) return NLMSG_GOODSIZE; /* * traverse the list of net devices and compute the minimum * buffer size based upon the filter mask. */ rcu_read_lock(); for_each_netdev_rcu(net, dev) { min_ifinfo_dump_size = max(min_ifinfo_dump_size, if_nlmsg_size(dev, ext_filter_mask)); } rcu_read_unlock(); return nlmsg_total_size(min_ifinfo_dump_size); } static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) { int idx; int s_idx = cb->family; int type = cb->nlh->nlmsg_type - RTM_BASE; int ret = 0; if (s_idx == 0) s_idx = 1; for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { struct rtnl_link __rcu **tab; struct rtnl_link *link; rtnl_dumpit_func dumpit; if (idx < s_idx || idx == PF_PACKET) continue; if (type < 0 || type >= RTM_NR_MSGTYPES) continue; tab = rcu_dereference_rtnl(rtnl_msg_handlers[idx]); if (!tab) continue; link = rcu_dereference_rtnl(tab[type]); if (!link) continue; dumpit = link->dumpit; if (!dumpit) continue; if (idx > s_idx) { memset(&cb->args[0], 0, sizeof(cb->args)); cb->prev_seq = 0; cb->seq = 0; } ret = dumpit(skb, cb); if (ret) break; } cb->family = idx; return skb->len ? : ret; } struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, unsigned int change, u32 event, gfp_t flags, int *new_nsid, int new_ifindex, u32 portid, const struct nlmsghdr *nlh) { struct net *net = dev_net(dev); struct sk_buff *skb; int err = -ENOBUFS; u32 seq = 0; skb = nlmsg_new(if_nlmsg_size(dev, 0), flags); if (skb == NULL) goto errout; if (nlmsg_report(nlh)) seq = nlmsg_seq(nlh); else portid = 0; err = rtnl_fill_ifinfo(skb, dev, dev_net(dev), type, portid, seq, change, 0, 0, event, new_nsid, new_ifindex, -1, flags); if (err < 0) { /* -EMSGSIZE implies BUG in if_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } return skb; errout: rtnl_set_sk_err(net, RTNLGRP_LINK, err); return NULL; } void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags, u32 portid, const struct nlmsghdr *nlh) { struct net *net = dev_net(dev); rtnl_notify(skb, net, portid, RTNLGRP_LINK, nlh, flags); } static void rtmsg_ifinfo_event(int type, struct net_device *dev, unsigned int change, u32 event, gfp_t flags, int *new_nsid, int new_ifindex, u32 portid, const struct nlmsghdr *nlh) { struct sk_buff *skb; if (dev->reg_state != NETREG_REGISTERED) return; skb = rtmsg_ifinfo_build_skb(type, dev, change, event, flags, new_nsid, new_ifindex, portid, nlh); if (skb) rtmsg_ifinfo_send(skb, dev, flags, portid, nlh); } void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, gfp_t flags, u32 portid, const struct nlmsghdr *nlh) { rtmsg_ifinfo_event(type, dev, change, rtnl_get_event(0), flags, NULL, 0, portid, nlh); } void rtmsg_ifinfo_newnet(int type, struct net_device *dev, unsigned int change, gfp_t flags, int *new_nsid, int new_ifindex) { rtmsg_ifinfo_event(type, dev, change, rtnl_get_event(0), flags, new_nsid, new_ifindex, 0, NULL); } static int nlmsg_populate_fdb_fill(struct sk_buff *skb, struct net_device *dev, u8 *addr, u16 vid, u32 pid, u32 seq, int type, unsigned int flags, int nlflags, u16 ndm_state) { struct nlmsghdr *nlh; struct ndmsg *ndm; nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); if (!nlh) return -EMSGSIZE; ndm = nlmsg_data(nlh); ndm->ndm_family = AF_BRIDGE; ndm->ndm_pad1 = 0; ndm->ndm_pad2 = 0; ndm->ndm_flags = flags; ndm->ndm_type = 0; ndm->ndm_ifindex = dev->ifindex; ndm->ndm_state = ndm_state; if (nla_put(skb, NDA_LLADDR, dev->addr_len, addr)) goto nla_put_failure; if (vid) if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid)) goto nla_put_failure; nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } static inline size_t rtnl_fdb_nlmsg_size(const struct net_device *dev) { return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(dev->addr_len) + /* NDA_LLADDR */ nla_total_size(sizeof(u16)) + /* NDA_VLAN */ 0; } static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, u16 ndm_state) { struct net *net = dev_net(dev); struct sk_buff *skb; int err = -ENOBUFS; skb = nlmsg_new(rtnl_fdb_nlmsg_size(dev), GFP_ATOMIC); if (!skb) goto errout; err = nlmsg_populate_fdb_fill(skb, dev, addr, vid, 0, 0, type, NTF_SELF, 0, ndm_state); if (err < 0) { kfree_skb(skb); goto errout; } rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); return; errout: rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); } /* * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry */ int ndo_dflt_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid, u16 flags) { int err = -EINVAL; /* If aging addresses are supported device will need to * implement its own handler for this. */ if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { netdev_info(dev, "default FDB implementation only supports local addresses\n"); return err; } if (tb[NDA_FLAGS_EXT]) { netdev_info(dev, "invalid flags given to default FDB implementation\n"); return err; } if (vid) { netdev_info(dev, "vlans aren't supported yet for dev_uc|mc_add()\n"); return err; } if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) err = dev_uc_add_excl(dev, addr); else if (is_multicast_ether_addr(addr)) err = dev_mc_add_excl(dev, addr); /* Only return duplicate errors if NLM_F_EXCL is set */ if (err == -EEXIST && !(flags & NLM_F_EXCL)) err = 0; return err; } EXPORT_SYMBOL(ndo_dflt_fdb_add); static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid, struct netlink_ext_ack *extack) { u16 vid = 0; if (vlan_attr) { if (nla_len(vlan_attr) != sizeof(u16)) { NL_SET_ERR_MSG(extack, "invalid vlan attribute size"); return -EINVAL; } vid = nla_get_u16(vlan_attr); if (!vid || vid >= VLAN_VID_MASK) { NL_SET_ERR_MSG(extack, "invalid vlan id"); return -EINVAL; } } *p_vid = vid; return 0; } static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct ndmsg *ndm; struct nlattr *tb[NDA_MAX+1]; struct net_device *dev; u8 *addr; u16 vid; int err; err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack); if (err < 0) return err; ndm = nlmsg_data(nlh); if (ndm->ndm_ifindex == 0) { NL_SET_ERR_MSG(extack, "invalid ifindex"); return -EINVAL; } dev = __dev_get_by_index(net, ndm->ndm_ifindex); if (dev == NULL) { NL_SET_ERR_MSG(extack, "unknown ifindex"); return -ENODEV; } if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { NL_SET_ERR_MSG(extack, "invalid address"); return -EINVAL; } if (dev->type != ARPHRD_ETHER) { NL_SET_ERR_MSG(extack, "FDB add only supported for Ethernet devices"); return -EINVAL; } addr = nla_data(tb[NDA_LLADDR]); err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); if (err) return err; err = -EOPNOTSUPP; /* Support fdb on master device the net/bridge default case */ if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && netif_is_bridge_port(dev)) { struct net_device *br_dev = netdev_master_upper_dev_get(dev); const struct net_device_ops *ops = br_dev->netdev_ops; bool notified = false; err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, nlh->nlmsg_flags, ¬ified, extack); if (err) goto out; else ndm->ndm_flags &= ~NTF_MASTER; } /* Embedded bridge, macvlan, and any other device support */ if ((ndm->ndm_flags & NTF_SELF)) { bool notified = false; if (dev->netdev_ops->ndo_fdb_add) err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, vid, nlh->nlmsg_flags, ¬ified, extack); else err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, nlh->nlmsg_flags); if (!err && !notified) { rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH, ndm->ndm_state); ndm->ndm_flags &= ~NTF_SELF; } } out: return err; } /* * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry */ int ndo_dflt_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid) { int err = -EINVAL; /* If aging addresses are supported device will need to * implement its own handler for this. */ if (!(ndm->ndm_state & NUD_PERMANENT)) { netdev_info(dev, "default FDB implementation only supports local addresses\n"); return err; } if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) err = dev_uc_del(dev, addr); else if (is_multicast_ether_addr(addr)) err = dev_mc_del(dev, addr); return err; } EXPORT_SYMBOL(ndo_dflt_fdb_del); static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { bool del_bulk = !!(nlh->nlmsg_flags & NLM_F_BULK); struct net *net = sock_net(skb->sk); const struct net_device_ops *ops; struct ndmsg *ndm; struct nlattr *tb[NDA_MAX+1]; struct net_device *dev; __u8 *addr = NULL; int err; u16 vid; if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!del_bulk) { err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack); } else { /* For bulk delete, the drivers will parse the message with * policy. */ err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack); } if (err < 0) return err; ndm = nlmsg_data(nlh); if (ndm->ndm_ifindex == 0) { NL_SET_ERR_MSG(extack, "invalid ifindex"); return -EINVAL; } dev = __dev_get_by_index(net, ndm->ndm_ifindex); if (dev == NULL) { NL_SET_ERR_MSG(extack, "unknown ifindex"); return -ENODEV; } if (!del_bulk) { if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { NL_SET_ERR_MSG(extack, "invalid address"); return -EINVAL; } addr = nla_data(tb[NDA_LLADDR]); err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); if (err) return err; } if (dev->type != ARPHRD_ETHER) { NL_SET_ERR_MSG(extack, "FDB delete only supported for Ethernet devices"); return -EINVAL; } err = -EOPNOTSUPP; /* Support fdb on master device the net/bridge default case */ if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && netif_is_bridge_port(dev)) { struct net_device *br_dev = netdev_master_upper_dev_get(dev); bool notified = false; ops = br_dev->netdev_ops; if (!del_bulk) { if (ops->ndo_fdb_del) err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, ¬ified, extack); } else { if (ops->ndo_fdb_del_bulk) err = ops->ndo_fdb_del_bulk(nlh, dev, extack); } if (err) goto out; else ndm->ndm_flags &= ~NTF_MASTER; } /* Embedded bridge, macvlan, and any other device support */ if (ndm->ndm_flags & NTF_SELF) { bool notified = false; ops = dev->netdev_ops; if (!del_bulk) { if (ops->ndo_fdb_del) err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, ¬ified, extack); else err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); } else { /* in case err was cleared by NTF_MASTER call */ err = -EOPNOTSUPP; if (ops->ndo_fdb_del_bulk) err = ops->ndo_fdb_del_bulk(nlh, dev, extack); } if (!err) { if (!del_bulk && !notified) rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, ndm->ndm_state); ndm->ndm_flags &= ~NTF_SELF; } } out: return err; } static int nlmsg_populate_fdb(struct sk_buff *skb, struct netlink_callback *cb, struct net_device *dev, int *idx, struct netdev_hw_addr_list *list) { struct ndo_fdb_dump_context *ctx = (void *)cb->ctx; struct netdev_hw_addr *ha; u32 portid, seq; int err; portid = NETLINK_CB(cb->skb).portid; seq = cb->nlh->nlmsg_seq; list_for_each_entry(ha, &list->list, list) { if (*idx < ctx->fdb_idx) goto skip; err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0, portid, seq, RTM_NEWNEIGH, NTF_SELF, NLM_F_MULTI, NUD_PERMANENT); if (err < 0) return err; skip: *idx += 1; } return 0; } /** * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. * @skb: socket buffer to store message in * @cb: netlink callback * @dev: netdevice * @filter_dev: ignored * @idx: the number of FDB table entries dumped is added to *@idx * * Default netdevice operation to dump the existing unicast address list. * Returns number of addresses from list put in skb. */ int ndo_dflt_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, struct net_device *dev, struct net_device *filter_dev, int *idx) { int err; if (dev->type != ARPHRD_ETHER) return -EINVAL; netif_addr_lock_bh(dev); err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->uc); if (err) goto out; err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->mc); out: netif_addr_unlock_bh(dev); return err; } EXPORT_SYMBOL(ndo_dflt_fdb_dump); static int valid_fdb_dump_strict(const struct nlmsghdr *nlh, int *br_idx, int *brport_idx, struct netlink_ext_ack *extack) { struct nlattr *tb[NDA_MAX + 1]; struct ndmsg *ndm; int err, i; if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) { NL_SET_ERR_MSG(extack, "Invalid header for fdb dump request"); return -EINVAL; } ndm = nlmsg_data(nlh); if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state || ndm->ndm_flags || ndm->ndm_type) { NL_SET_ERR_MSG(extack, "Invalid values in header for fdb dump request"); return -EINVAL; } err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg), tb, NDA_MAX, NULL, extack); if (err < 0) return err; *brport_idx = ndm->ndm_ifindex; for (i = 0; i <= NDA_MAX; ++i) { if (!tb[i]) continue; switch (i) { case NDA_IFINDEX: if (nla_len(tb[i]) != sizeof(u32)) { NL_SET_ERR_MSG(extack, "Invalid IFINDEX attribute in fdb dump request"); return -EINVAL; } *brport_idx = nla_get_u32(tb[NDA_IFINDEX]); break; case NDA_MASTER: if (nla_len(tb[i]) != sizeof(u32)) { NL_SET_ERR_MSG(extack, "Invalid MASTER attribute in fdb dump request"); return -EINVAL; } *br_idx = nla_get_u32(tb[NDA_MASTER]); break; default: NL_SET_ERR_MSG(extack, "Unsupported attribute in fdb dump request"); return -EINVAL; } } return 0; } static int valid_fdb_dump_legacy(const struct nlmsghdr *nlh, int *br_idx, int *brport_idx, struct netlink_ext_ack *extack) { struct nlattr *tb[IFLA_MAX+1]; int err; /* A hack to preserve kernel<->userspace interface. * Before Linux v4.12 this code accepted ndmsg since iproute2 v3.3.0. * However, ndmsg is shorter than ifinfomsg thus nlmsg_parse() bails. * So, check for ndmsg with an optional u32 attribute (not used here). * Fortunately these sizes don't conflict with the size of ifinfomsg * with an optional attribute. */ if (nlmsg_len(nlh) != sizeof(struct ndmsg) && (nlmsg_len(nlh) != sizeof(struct ndmsg) + nla_attr_size(sizeof(u32)))) { struct ifinfomsg *ifm; err = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, ifla_policy, extack); if (err < 0) { return -EINVAL; } else if (err == 0) { if (tb[IFLA_MASTER]) *br_idx = nla_get_u32(tb[IFLA_MASTER]); } ifm = nlmsg_data(nlh); *brport_idx = ifm->ifi_index; } return 0; } static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) { const struct net_device_ops *ops = NULL, *cops = NULL; struct ndo_fdb_dump_context *ctx = (void *)cb->ctx; struct net_device *dev, *br_dev = NULL; struct net *net = sock_net(skb->sk); int brport_idx = 0; int br_idx = 0; int fidx = 0; int err; NL_ASSERT_CTX_FITS(struct ndo_fdb_dump_context); if (cb->strict_check) err = valid_fdb_dump_strict(cb->nlh, &br_idx, &brport_idx, cb->extack); else err = valid_fdb_dump_legacy(cb->nlh, &br_idx, &brport_idx, cb->extack); if (err < 0) return err; if (br_idx) { br_dev = __dev_get_by_index(net, br_idx); if (!br_dev) return -ENODEV; ops = br_dev->netdev_ops; } for_each_netdev_dump(net, dev, ctx->ifindex) { if (brport_idx && (dev->ifindex != brport_idx)) continue; if (!br_idx) { /* user did not specify a specific bridge */ if (netif_is_bridge_port(dev)) { br_dev = netdev_master_upper_dev_get(dev); cops = br_dev->netdev_ops; } } else { if (dev != br_dev && !netif_is_bridge_port(dev)) continue; if (br_dev != netdev_master_upper_dev_get(dev) && !netif_is_bridge_master(dev)) continue; cops = ops; } if (netif_is_bridge_port(dev)) { if (cops && cops->ndo_fdb_dump) { err = cops->ndo_fdb_dump(skb, cb, br_dev, dev, &fidx); if (err == -EMSGSIZE) break; } } if (dev->netdev_ops->ndo_fdb_dump) err = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL, &fidx); else err = ndo_dflt_fdb_dump(skb, cb, dev, NULL, &fidx); if (err == -EMSGSIZE) break; cops = NULL; /* reset fdb offset to 0 for rest of the interfaces */ ctx->fdb_idx = 0; fidx = 0; } ctx->fdb_idx = fidx; return skb->len; } static int valid_fdb_get_strict(const struct nlmsghdr *nlh, struct nlattr **tb, u8 *ndm_flags, int *br_idx, int *brport_idx, u8 **addr, u16 *vid, struct netlink_ext_ack *extack) { struct ndmsg *ndm; int err, i; if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) { NL_SET_ERR_MSG(extack, "Invalid header for fdb get request"); return -EINVAL; } ndm = nlmsg_data(nlh); if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state || ndm->ndm_type) { NL_SET_ERR_MSG(extack, "Invalid values in header for fdb get request"); return -EINVAL; } if (ndm->ndm_flags & ~(NTF_MASTER | NTF_SELF)) { NL_SET_ERR_MSG(extack, "Invalid flags in header for fdb get request"); return -EINVAL; } err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg), tb, NDA_MAX, nda_policy, extack); if (err < 0) return err; *ndm_flags = ndm->ndm_flags; *brport_idx = ndm->ndm_ifindex; for (i = 0; i <= NDA_MAX; ++i) { if (!tb[i]) continue; switch (i) { case NDA_MASTER: *br_idx = nla_get_u32(tb[i]); break; case NDA_LLADDR: if (nla_len(tb[i]) != ETH_ALEN) { NL_SET_ERR_MSG(extack, "Invalid address in fdb get request"); return -EINVAL; } *addr = nla_data(tb[i]); break; case NDA_VLAN: err = fdb_vid_parse(tb[i], vid, extack); if (err) return err; break; case NDA_VNI: break; default: NL_SET_ERR_MSG(extack, "Unsupported attribute in fdb get request"); return -EINVAL; } } return 0; } static int rtnl_fdb_get(struct sk_buff *in_skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net_device *dev = NULL, *br_dev = NULL; const struct net_device_ops *ops = NULL; struct net *net = sock_net(in_skb->sk); struct nlattr *tb[NDA_MAX + 1]; struct sk_buff *skb; int brport_idx = 0; u8 ndm_flags = 0; int br_idx = 0; u8 *addr = NULL; u16 vid = 0; int err; err = valid_fdb_get_strict(nlh, tb, &ndm_flags, &br_idx, &brport_idx, &addr, &vid, extack); if (err < 0) return err; if (!addr) { NL_SET_ERR_MSG(extack, "Missing lookup address for fdb get request"); return -EINVAL; } if (brport_idx) { dev = __dev_get_by_index(net, brport_idx); if (!dev) { NL_SET_ERR_MSG(extack, "Unknown device ifindex"); return -ENODEV; } } if (br_idx) { if (dev) { NL_SET_ERR_MSG(extack, "Master and device are mutually exclusive"); return -EINVAL; } br_dev = __dev_get_by_index(net, br_idx); if (!br_dev) { NL_SET_ERR_MSG(extack, "Invalid master ifindex"); return -EINVAL; } ops = br_dev->netdev_ops; } if (dev) { if (!ndm_flags || (ndm_flags & NTF_MASTER)) { if (!netif_is_bridge_port(dev)) { NL_SET_ERR_MSG(extack, "Device is not a bridge port"); return -EINVAL; } br_dev = netdev_master_upper_dev_get(dev); if (!br_dev) { NL_SET_ERR_MSG(extack, "Master of device not found"); return -EINVAL; } ops = br_dev->netdev_ops; } else { if (!(ndm_flags & NTF_SELF)) { NL_SET_ERR_MSG(extack, "Missing NTF_SELF"); return -EINVAL; } ops = dev->netdev_ops; } } if (!br_dev && !dev) { NL_SET_ERR_MSG(extack, "No device specified"); return -ENODEV; } if (!ops || !ops->ndo_fdb_get) { NL_SET_ERR_MSG(extack, "Fdb get operation not supported by device"); return -EOPNOTSUPP; } skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); if (!skb) return -ENOBUFS; if (br_dev) dev = br_dev; err = ops->ndo_fdb_get(skb, tb, dev, addr, vid, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, extack); if (err) goto out; return rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid); out: kfree_skb(skb); return err; } static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, unsigned int attrnum, unsigned int flag) { if (mask & flag) return nla_put_u8(skb, attrnum, !!(flags & flag)); return 0; } int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, u16 mode, u32 flags, u32 mask, int nlflags, u32 filter_mask, int (*vlan_fill)(struct sk_buff *skb, struct net_device *dev, u32 filter_mask)) { struct nlmsghdr *nlh; struct ifinfomsg *ifm; struct nlattr *br_afspec; struct nlattr *protinfo; u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; struct net_device *br_dev = netdev_master_upper_dev_get(dev); int err = 0; nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags); if (nlh == NULL) return -EMSGSIZE; ifm = nlmsg_data(nlh); ifm->ifi_family = AF_BRIDGE; ifm->__ifi_pad = 0; ifm->ifi_type = dev->type; ifm->ifi_index = dev->ifindex; ifm->ifi_flags = dev_get_flags(dev); ifm->ifi_change = 0; if (nla_put_string(skb, IFLA_IFNAME, dev->name) || nla_put_u32(skb, IFLA_MTU, dev->mtu) || nla_put_u8(skb, IFLA_OPERSTATE, operstate) || (br_dev && nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || (dev->addr_len && nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || (dev->ifindex != dev_get_iflink(dev) && nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) goto nla_put_failure; br_afspec = nla_nest_start_noflag(skb, IFLA_AF_SPEC); if (!br_afspec) goto nla_put_failure; if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { nla_nest_cancel(skb, br_afspec); goto nla_put_failure; } if (mode != BRIDGE_MODE_UNDEF) { if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { nla_nest_cancel(skb, br_afspec); goto nla_put_failure; } } if (vlan_fill) { err = vlan_fill(skb, dev, filter_mask); if (err) { nla_nest_cancel(skb, br_afspec); goto nla_put_failure; } } nla_nest_end(skb, br_afspec); protinfo = nla_nest_start(skb, IFLA_PROTINFO); if (!protinfo) goto nla_put_failure; if (brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_LEARNING, BR_LEARNING) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_PROXYARP, BR_PROXYARP) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD) || brport_nla_put_flag(skb, flags, mask, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD)) { nla_nest_cancel(skb, protinfo); goto nla_put_failure; } nla_nest_end(skb, protinfo); nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return err ? err : -EMSGSIZE; } EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink); static int valid_bridge_getlink_req(const struct nlmsghdr *nlh, bool strict_check, u32 *filter_mask, struct netlink_ext_ack *extack) { struct nlattr *tb[IFLA_MAX+1]; int err, i; if (strict_check) { struct ifinfomsg *ifm; if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { NL_SET_ERR_MSG(extack, "Invalid header for bridge link dump"); return -EINVAL; } ifm = nlmsg_data(nlh); if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || ifm->ifi_change || ifm->ifi_index) { NL_SET_ERR_MSG(extack, "Invalid values in header for bridge link dump request"); return -EINVAL; } err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, ifla_policy, extack); } else { err = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, ifla_policy, extack); } if (err < 0) return err; /* new attributes should only be added with strict checking */ for (i = 0; i <= IFLA_MAX; ++i) { if (!tb[i]) continue; switch (i) { case IFLA_EXT_MASK: *filter_mask = nla_get_u32(tb[i]); break; default: if (strict_check) { NL_SET_ERR_MSG(extack, "Unsupported attribute in bridge link dump request"); return -EINVAL; } } } return 0; } static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) { const struct nlmsghdr *nlh = cb->nlh; struct net *net = sock_net(skb->sk); struct net_device *dev; int idx = 0; u32 portid = NETLINK_CB(cb->skb).portid; u32 seq = nlh->nlmsg_seq; u32 filter_mask = 0; int err; err = valid_bridge_getlink_req(nlh, cb->strict_check, &filter_mask, cb->extack); if (err < 0 && cb->strict_check) return err; rcu_read_lock(); for_each_netdev_rcu(net, dev) { const struct net_device_ops *ops = dev->netdev_ops; struct net_device *br_dev = netdev_master_upper_dev_get(dev); if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { if (idx >= cb->args[0]) { err = br_dev->netdev_ops->ndo_bridge_getlink( skb, portid, seq, dev, filter_mask, NLM_F_MULTI); if (err < 0 && err != -EOPNOTSUPP) { if (likely(skb->len)) break; goto out_err; } } idx++; } if (ops->ndo_bridge_getlink) { if (idx >= cb->args[0]) { err = ops->ndo_bridge_getlink(skb, portid, seq, dev, filter_mask, NLM_F_MULTI); if (err < 0 && err != -EOPNOTSUPP) { if (likely(skb->len)) break; goto out_err; } } idx++; } } err = skb->len; out_err: rcu_read_unlock(); cb->args[0] = idx; return err; } static inline size_t bridge_nlmsg_size(void) { return NLMSG_ALIGN(sizeof(struct ifinfomsg)) + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ + nla_total_size(sizeof(u32)) /* IFLA_MTU */ + nla_total_size(sizeof(u32)) /* IFLA_LINK */ + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ } static int rtnl_bridge_notify(struct net_device *dev) { struct net *net = dev_net(dev); struct sk_buff *skb; int err = -EOPNOTSUPP; if (!dev->netdev_ops->ndo_bridge_getlink) return 0; skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); if (!skb) { err = -ENOMEM; goto errout; } err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0); if (err < 0) goto errout; /* Notification info is only filled for bridge ports, not the bridge * device itself. Therefore, a zero notification length is valid and * should not result in an error. */ if (!skb->len) goto errout; rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); return 0; errout: WARN_ON(err == -EMSGSIZE); kfree_skb(skb); if (err) rtnl_set_sk_err(net, RTNLGRP_LINK, err); return err; } static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct ifinfomsg *ifm; struct net_device *dev; struct nlattr *br_spec, *attr, *br_flags_attr = NULL; int rem, err = -EOPNOTSUPP; u16 flags = 0; if (nlmsg_len(nlh) < sizeof(*ifm)) return -EINVAL; ifm = nlmsg_data(nlh); if (ifm->ifi_family != AF_BRIDGE) return -EPFNOSUPPORT; dev = __dev_get_by_index(net, ifm->ifi_index); if (!dev) { NL_SET_ERR_MSG(extack, "unknown ifindex"); return -ENODEV; } br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); if (br_spec) { nla_for_each_nested(attr, br_spec, rem) { if (nla_type(attr) == IFLA_BRIDGE_FLAGS && !br_flags_attr) { if (nla_len(attr) < sizeof(flags)) return -EINVAL; br_flags_attr = attr; flags = nla_get_u16(attr); } if (nla_type(attr) == IFLA_BRIDGE_MODE) { if (nla_len(attr) < sizeof(u16)) return -EINVAL; } } } if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { struct net_device *br_dev = netdev_master_upper_dev_get(dev); if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { err = -EOPNOTSUPP; goto out; } err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags, extack); if (err) goto out; flags &= ~BRIDGE_FLAGS_MASTER; } if ((flags & BRIDGE_FLAGS_SELF)) { if (!dev->netdev_ops->ndo_bridge_setlink) err = -EOPNOTSUPP; else err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags, extack); if (!err) { flags &= ~BRIDGE_FLAGS_SELF; /* Generate event to notify upper layer of bridge * change */ err = rtnl_bridge_notify(dev); } } if (br_flags_attr) memcpy(nla_data(br_flags_attr), &flags, sizeof(flags)); out: return err; } static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct ifinfomsg *ifm; struct net_device *dev; struct nlattr *br_spec, *attr = NULL; int rem, err = -EOPNOTSUPP; u16 flags = 0; bool have_flags = false; if (nlmsg_len(nlh) < sizeof(*ifm)) return -EINVAL; ifm = nlmsg_data(nlh); if (ifm->ifi_family != AF_BRIDGE) return -EPFNOSUPPORT; dev = __dev_get_by_index(net, ifm->ifi_index); if (!dev) { NL_SET_ERR_MSG(extack, "unknown ifindex"); return -ENODEV; } br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); if (br_spec) { nla_for_each_nested_type(attr, IFLA_BRIDGE_FLAGS, br_spec, rem) { if (nla_len(attr) < sizeof(flags)) return -EINVAL; have_flags = true; flags = nla_get_u16(attr); break; } } if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { struct net_device *br_dev = netdev_master_upper_dev_get(dev); if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { err = -EOPNOTSUPP; goto out; } err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); if (err) goto out; flags &= ~BRIDGE_FLAGS_MASTER; } if ((flags & BRIDGE_FLAGS_SELF)) { if (!dev->netdev_ops->ndo_bridge_dellink) err = -EOPNOTSUPP; else err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); if (!err) { flags &= ~BRIDGE_FLAGS_SELF; /* Generate event to notify upper layer of bridge * change */ err = rtnl_bridge_notify(dev); } } if (have_flags) memcpy(nla_data(attr), &flags, sizeof(flags)); out: return err; } static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr) { return (mask & IFLA_STATS_FILTER_BIT(attrid)) && (!idxattr || idxattr == attrid); } static bool rtnl_offload_xstats_have_ndo(const struct net_device *dev, int attr_id) { return dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && dev->netdev_ops->ndo_get_offload_stats && dev->netdev_ops->ndo_has_offload_stats(dev, attr_id); } static unsigned int rtnl_offload_xstats_get_size_ndo(const struct net_device *dev, int attr_id) { return rtnl_offload_xstats_have_ndo(dev, attr_id) ? sizeof(struct rtnl_link_stats64) : 0; } static int rtnl_offload_xstats_fill_ndo(struct net_device *dev, int attr_id, struct sk_buff *skb) { unsigned int size = rtnl_offload_xstats_get_size_ndo(dev, attr_id); struct nlattr *attr = NULL; void *attr_data; int err; if (!size) return -ENODATA; attr = nla_reserve_64bit(skb, attr_id, size, IFLA_OFFLOAD_XSTATS_UNSPEC); if (!attr) return -EMSGSIZE; attr_data = nla_data(attr); memset(attr_data, 0, size); err = dev->netdev_ops->ndo_get_offload_stats(attr_id, dev, attr_data); if (err) return err; return 0; } static unsigned int rtnl_offload_xstats_get_size_stats(const struct net_device *dev, enum netdev_offload_xstats_type type) { bool enabled = netdev_offload_xstats_enabled(dev, type); return enabled ? sizeof(struct rtnl_hw_stats64) : 0; } struct rtnl_offload_xstats_request_used { bool request; bool used; }; static int rtnl_offload_xstats_get_stats(struct net_device *dev, enum netdev_offload_xstats_type type, struct rtnl_offload_xstats_request_used *ru, struct rtnl_hw_stats64 *stats, struct netlink_ext_ack *extack) { bool request; bool used; int err; request = netdev_offload_xstats_enabled(dev, type); if (!request) { used = false; goto out; } err = netdev_offload_xstats_get(dev, type, stats, &used, extack); if (err) return err; out: if (ru) { ru->request = request; ru->used = used; } return 0; } static int rtnl_offload_xstats_fill_hw_s_info_one(struct sk_buff *skb, int attr_id, struct rtnl_offload_xstats_request_used *ru) { struct nlattr *nest; nest = nla_nest_start(skb, attr_id); if (!nest) return -EMSGSIZE; if (nla_put_u8(skb, IFLA_OFFLOAD_XSTATS_HW_S_INFO_REQUEST, ru->request)) goto nla_put_failure; if (nla_put_u8(skb, IFLA_OFFLOAD_XSTATS_HW_S_INFO_USED, ru->used)) goto nla_put_failure; nla_nest_end(skb, nest); return 0; nla_put_failure: nla_nest_cancel(skb, nest); return -EMSGSIZE; } static int rtnl_offload_xstats_fill_hw_s_info(struct sk_buff *skb, struct net_device *dev, struct netlink_ext_ack *extack) { enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; struct rtnl_offload_xstats_request_used ru_l3; struct nlattr *nest; int err; err = rtnl_offload_xstats_get_stats(dev, t_l3, &ru_l3, NULL, extack); if (err) return err; nest = nla_nest_start(skb, IFLA_OFFLOAD_XSTATS_HW_S_INFO); if (!nest) return -EMSGSIZE; if (rtnl_offload_xstats_fill_hw_s_info_one(skb, IFLA_OFFLOAD_XSTATS_L3_STATS, &ru_l3)) goto nla_put_failure; nla_nest_end(skb, nest); return 0; nla_put_failure: nla_nest_cancel(skb, nest); return -EMSGSIZE; } static int rtnl_offload_xstats_fill(struct sk_buff *skb, struct net_device *dev, int *prividx, u32 off_filter_mask, struct netlink_ext_ack *extack) { enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; int attr_id_hw_s_info = IFLA_OFFLOAD_XSTATS_HW_S_INFO; int attr_id_l3_stats = IFLA_OFFLOAD_XSTATS_L3_STATS; int attr_id_cpu_hit = IFLA_OFFLOAD_XSTATS_CPU_HIT; bool have_data = false; int err; if (*prividx <= attr_id_cpu_hit && (off_filter_mask & IFLA_STATS_FILTER_BIT(attr_id_cpu_hit))) { err = rtnl_offload_xstats_fill_ndo(dev, attr_id_cpu_hit, skb); if (!err) { have_data = true; } else if (err != -ENODATA) { *prividx = attr_id_cpu_hit; return err; } } if (*prividx <= attr_id_hw_s_info && (off_filter_mask & IFLA_STATS_FILTER_BIT(attr_id_hw_s_info))) { *prividx = attr_id_hw_s_info; err = rtnl_offload_xstats_fill_hw_s_info(skb, dev, extack); if (err) return err; have_data = true; *prividx = 0; } if (*prividx <= attr_id_l3_stats && (off_filter_mask & IFLA_STATS_FILTER_BIT(attr_id_l3_stats))) { unsigned int size_l3; struct nlattr *attr; *prividx = attr_id_l3_stats; size_l3 = rtnl_offload_xstats_get_size_stats(dev, t_l3); if (!size_l3) goto skip_l3_stats; attr = nla_reserve_64bit(skb, attr_id_l3_stats, size_l3, IFLA_OFFLOAD_XSTATS_UNSPEC); if (!attr) return -EMSGSIZE; err = rtnl_offload_xstats_get_stats(dev, t_l3, NULL, nla_data(attr), extack); if (err) return err; have_data = true; skip_l3_stats: *prividx = 0; } if (!have_data) return -ENODATA; *prividx = 0; return 0; } static unsigned int rtnl_offload_xstats_get_size_hw_s_info_one(const struct net_device *dev, enum netdev_offload_xstats_type type) { return nla_total_size(0) + /* IFLA_OFFLOAD_XSTATS_HW_S_INFO_REQUEST */ nla_total_size(sizeof(u8)) + /* IFLA_OFFLOAD_XSTATS_HW_S_INFO_USED */ nla_total_size(sizeof(u8)) + 0; } static unsigned int rtnl_offload_xstats_get_size_hw_s_info(const struct net_device *dev) { enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; return nla_total_size(0) + /* IFLA_OFFLOAD_XSTATS_L3_STATS */ rtnl_offload_xstats_get_size_hw_s_info_one(dev, t_l3) + 0; } static int rtnl_offload_xstats_get_size(const struct net_device *dev, u32 off_filter_mask) { enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; int attr_id_cpu_hit = IFLA_OFFLOAD_XSTATS_CPU_HIT; int nla_size = 0; int size; if (off_filter_mask & IFLA_STATS_FILTER_BIT(attr_id_cpu_hit)) { size = rtnl_offload_xstats_get_size_ndo(dev, attr_id_cpu_hit); nla_size += nla_total_size_64bit(size); } if (off_filter_mask & IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_HW_S_INFO)) nla_size += rtnl_offload_xstats_get_size_hw_s_info(dev); if (off_filter_mask & IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_L3_STATS)) { size = rtnl_offload_xstats_get_size_stats(dev, t_l3); nla_size += nla_total_size_64bit(size); } if (nla_size != 0) nla_size += nla_total_size(0); return nla_size; } struct rtnl_stats_dump_filters { /* mask[0] filters outer attributes. Then individual nests have their * filtering mask at the index of the nested attribute. */ u32 mask[IFLA_STATS_MAX + 1]; }; static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, int type, u32 pid, u32 seq, u32 change, unsigned int flags, const struct rtnl_stats_dump_filters *filters, int *idxattr, int *prividx, struct netlink_ext_ack *extack) { unsigned int filter_mask = filters->mask[0]; struct if_stats_msg *ifsm; struct nlmsghdr *nlh; struct nlattr *attr; int s_prividx = *prividx; int err; ASSERT_RTNL(); nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifsm), flags); if (!nlh) return -EMSGSIZE; ifsm = nlmsg_data(nlh); ifsm->family = PF_UNSPEC; ifsm->pad1 = 0; ifsm->pad2 = 0; ifsm->ifindex = dev->ifindex; ifsm->filter_mask = filter_mask; if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, *idxattr)) { struct rtnl_link_stats64 *sp; attr = nla_reserve_64bit(skb, IFLA_STATS_LINK_64, sizeof(struct rtnl_link_stats64), IFLA_STATS_UNSPEC); if (!attr) { err = -EMSGSIZE; goto nla_put_failure; } sp = nla_data(attr); dev_get_stats(dev, sp); } if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) { const struct rtnl_link_ops *ops = dev->rtnl_link_ops; if (ops && ops->fill_linkxstats) { *idxattr = IFLA_STATS_LINK_XSTATS; attr = nla_nest_start_noflag(skb, IFLA_STATS_LINK_XSTATS); if (!attr) { err = -EMSGSIZE; goto nla_put_failure; } err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); nla_nest_end(skb, attr); if (err) goto nla_put_failure; *idxattr = 0; } } if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, *idxattr)) { const struct rtnl_link_ops *ops = NULL; const struct net_device *master; master = netdev_master_upper_dev_get(dev); if (master) ops = master->rtnl_link_ops; if (ops && ops->fill_linkxstats) { *idxattr = IFLA_STATS_LINK_XSTATS_SLAVE; attr = nla_nest_start_noflag(skb, IFLA_STATS_LINK_XSTATS_SLAVE); if (!attr) { err = -EMSGSIZE; goto nla_put_failure; } err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); nla_nest_end(skb, attr); if (err) goto nla_put_failure; *idxattr = 0; } } if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, *idxattr)) { u32 off_filter_mask; off_filter_mask = filters->mask[IFLA_STATS_LINK_OFFLOAD_XSTATS]; *idxattr = IFLA_STATS_LINK_OFFLOAD_XSTATS; attr = nla_nest_start_noflag(skb, IFLA_STATS_LINK_OFFLOAD_XSTATS); if (!attr) { err = -EMSGSIZE; goto nla_put_failure; } err = rtnl_offload_xstats_fill(skb, dev, prividx, off_filter_mask, extack); if (err == -ENODATA) nla_nest_cancel(skb, attr); else nla_nest_end(skb, attr); if (err && err != -ENODATA) goto nla_put_failure; *idxattr = 0; } if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, *idxattr)) { struct rtnl_af_ops *af_ops; *idxattr = IFLA_STATS_AF_SPEC; attr = nla_nest_start_noflag(skb, IFLA_STATS_AF_SPEC); if (!attr) { err = -EMSGSIZE; goto nla_put_failure; } rcu_read_lock(); list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { if (af_ops->fill_stats_af) { struct nlattr *af; af = nla_nest_start_noflag(skb, af_ops->family); if (!af) { rcu_read_unlock(); err = -EMSGSIZE; goto nla_put_failure; } err = af_ops->fill_stats_af(skb, dev); if (err == -ENODATA) { nla_nest_cancel(skb, af); } else if (err < 0) { rcu_read_unlock(); goto nla_put_failure; } nla_nest_end(skb, af); } } rcu_read_unlock(); nla_nest_end(skb, attr); *idxattr = 0; } nlmsg_end(skb, nlh); return 0; nla_put_failure: /* not a multi message or no progress mean a real error */ if (!(flags & NLM_F_MULTI) || s_prividx == *prividx) nlmsg_cancel(skb, nlh); else nlmsg_end(skb, nlh); return err; } static size_t if_nlmsg_stats_size(const struct net_device *dev, const struct rtnl_stats_dump_filters *filters) { size_t size = NLMSG_ALIGN(sizeof(struct if_stats_msg)); unsigned int filter_mask = filters->mask[0]; if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0)) size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64)); if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) { const struct rtnl_link_ops *ops = dev->rtnl_link_ops; int attr = IFLA_STATS_LINK_XSTATS; if (ops && ops->get_linkxstats_size) { size += nla_total_size(ops->get_linkxstats_size(dev, attr)); /* for IFLA_STATS_LINK_XSTATS */ size += nla_total_size(0); } } if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, 0)) { struct net_device *_dev = (struct net_device *)dev; const struct rtnl_link_ops *ops = NULL; const struct net_device *master; /* netdev_master_upper_dev_get can't take const */ master = netdev_master_upper_dev_get(_dev); if (master) ops = master->rtnl_link_ops; if (ops && ops->get_linkxstats_size) { int attr = IFLA_STATS_LINK_XSTATS_SLAVE; size += nla_total_size(ops->get_linkxstats_size(dev, attr)); /* for IFLA_STATS_LINK_XSTATS_SLAVE */ size += nla_total_size(0); } } if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, 0)) { u32 off_filter_mask; off_filter_mask = filters->mask[IFLA_STATS_LINK_OFFLOAD_XSTATS]; size += rtnl_offload_xstats_get_size(dev, off_filter_mask); } if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, 0)) { struct rtnl_af_ops *af_ops; /* for IFLA_STATS_AF_SPEC */ size += nla_total_size(0); rcu_read_lock(); list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { if (af_ops->get_stats_af_size) { size += nla_total_size( af_ops->get_stats_af_size(dev)); /* for AF_* */ size += nla_total_size(0); } } rcu_read_unlock(); } return size; } #define RTNL_STATS_OFFLOAD_XSTATS_VALID ((1 << __IFLA_OFFLOAD_XSTATS_MAX) - 1) static const struct nla_policy rtnl_stats_get_policy_filters[IFLA_STATS_MAX + 1] = { [IFLA_STATS_LINK_OFFLOAD_XSTATS] = NLA_POLICY_MASK(NLA_U32, RTNL_STATS_OFFLOAD_XSTATS_VALID), }; static const struct nla_policy rtnl_stats_get_policy[IFLA_STATS_GETSET_MAX + 1] = { [IFLA_STATS_GET_FILTERS] = NLA_POLICY_NESTED(rtnl_stats_get_policy_filters), }; static const struct nla_policy ifla_stats_set_policy[IFLA_STATS_GETSET_MAX + 1] = { [IFLA_STATS_SET_OFFLOAD_XSTATS_L3_STATS] = NLA_POLICY_MAX(NLA_U8, 1), }; static int rtnl_stats_get_parse_filters(struct nlattr *ifla_filters, struct rtnl_stats_dump_filters *filters, struct netlink_ext_ack *extack) { struct nlattr *tb[IFLA_STATS_MAX + 1]; int err; int at; err = nla_parse_nested(tb, IFLA_STATS_MAX, ifla_filters, rtnl_stats_get_policy_filters, extack); if (err < 0) return err; for (at = 1; at <= IFLA_STATS_MAX; at++) { if (tb[at]) { if (!(filters->mask[0] & IFLA_STATS_FILTER_BIT(at))) { NL_SET_ERR_MSG(extack, "Filtered attribute not enabled in filter_mask"); return -EINVAL; } filters->mask[at] = nla_get_u32(tb[at]); } } return 0; } static int rtnl_stats_get_parse(const struct nlmsghdr *nlh, u32 filter_mask, struct rtnl_stats_dump_filters *filters, struct netlink_ext_ack *extack) { struct nlattr *tb[IFLA_STATS_GETSET_MAX + 1]; int err; int i; filters->mask[0] = filter_mask; for (i = 1; i < ARRAY_SIZE(filters->mask); i++) filters->mask[i] = -1U; err = nlmsg_parse(nlh, sizeof(struct if_stats_msg), tb, IFLA_STATS_GETSET_MAX, rtnl_stats_get_policy, extack); if (err < 0) return err; if (tb[IFLA_STATS_GET_FILTERS]) { err = rtnl_stats_get_parse_filters(tb[IFLA_STATS_GET_FILTERS], filters, extack); if (err) return err; } return 0; } static int rtnl_valid_stats_req(const struct nlmsghdr *nlh, bool strict_check, bool is_dump, struct netlink_ext_ack *extack) { struct if_stats_msg *ifsm; if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifsm))) { NL_SET_ERR_MSG(extack, "Invalid header for stats dump"); return -EINVAL; } if (!strict_check) return 0; ifsm = nlmsg_data(nlh); /* only requests using strict checks can pass data to influence * the dump. The legacy exception is filter_mask. */ if (ifsm->pad1 || ifsm->pad2 || (is_dump && ifsm->ifindex)) { NL_SET_ERR_MSG(extack, "Invalid values in header for stats dump request"); return -EINVAL; } if (ifsm->filter_mask >= IFLA_STATS_FILTER_BIT(IFLA_STATS_MAX + 1)) { NL_SET_ERR_MSG(extack, "Invalid stats requested through filter mask"); return -EINVAL; } return 0; } static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct rtnl_stats_dump_filters filters; struct net *net = sock_net(skb->sk); struct net_device *dev = NULL; int idxattr = 0, prividx = 0; struct if_stats_msg *ifsm; struct sk_buff *nskb; int err; err = rtnl_valid_stats_req(nlh, netlink_strict_get_check(skb), false, extack); if (err) return err; ifsm = nlmsg_data(nlh); if (ifsm->ifindex > 0) dev = __dev_get_by_index(net, ifsm->ifindex); else return -EINVAL; if (!dev) return -ENODEV; if (!ifsm->filter_mask) { NL_SET_ERR_MSG(extack, "Filter mask must be set for stats get"); return -EINVAL; } err = rtnl_stats_get_parse(nlh, ifsm->filter_mask, &filters, extack); if (err) return err; nskb = nlmsg_new(if_nlmsg_stats_size(dev, &filters), GFP_KERNEL); if (!nskb) return -ENOBUFS; err = rtnl_fill_statsinfo(nskb, dev, RTM_NEWSTATS, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, 0, &filters, &idxattr, &prividx, extack); if (err < 0) { /* -EMSGSIZE implies BUG in if_nlmsg_stats_size */ WARN_ON(err == -EMSGSIZE); kfree_skb(nskb); } else { err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); } return err; } static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb) { struct netlink_ext_ack *extack = cb->extack; struct rtnl_stats_dump_filters filters; struct net *net = sock_net(skb->sk); unsigned int flags = NLM_F_MULTI; struct if_stats_msg *ifsm; struct { unsigned long ifindex; int idxattr; int prividx; } *ctx = (void *)cb->ctx; struct net_device *dev; int err; cb->seq = net->dev_base_seq; err = rtnl_valid_stats_req(cb->nlh, cb->strict_check, true, extack); if (err) return err; ifsm = nlmsg_data(cb->nlh); if (!ifsm->filter_mask) { NL_SET_ERR_MSG(extack, "Filter mask must be set for stats dump"); return -EINVAL; } err = rtnl_stats_get_parse(cb->nlh, ifsm->filter_mask, &filters, extack); if (err) return err; for_each_netdev_dump(net, dev, ctx->ifindex) { err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 0, flags, &filters, &ctx->idxattr, &ctx->prividx, extack); /* If we ran out of room on the first message, * we're in trouble. */ WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); if (err < 0) break; ctx->prividx = 0; ctx->idxattr = 0; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); } return err; } void rtnl_offload_xstats_notify(struct net_device *dev) { struct rtnl_stats_dump_filters response_filters = {}; struct net *net = dev_net(dev); int idxattr = 0, prividx = 0; struct sk_buff *skb; int err = -ENOBUFS; ASSERT_RTNL(); response_filters.mask[0] |= IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_OFFLOAD_XSTATS); response_filters.mask[IFLA_STATS_LINK_OFFLOAD_XSTATS] |= IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_HW_S_INFO); skb = nlmsg_new(if_nlmsg_stats_size(dev, &response_filters), GFP_KERNEL); if (!skb) goto errout; err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, 0, 0, 0, 0, &response_filters, &idxattr, &prividx, NULL); if (err < 0) { kfree_skb(skb); goto errout; } rtnl_notify(skb, net, 0, RTNLGRP_STATS, NULL, GFP_KERNEL); return; errout: rtnl_set_sk_err(net, RTNLGRP_STATS, err); } EXPORT_SYMBOL(rtnl_offload_xstats_notify); static int rtnl_stats_set(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; struct rtnl_stats_dump_filters response_filters = {}; struct nlattr *tb[IFLA_STATS_GETSET_MAX + 1]; struct net *net = sock_net(skb->sk); struct net_device *dev = NULL; struct if_stats_msg *ifsm; bool notify = false; int err; err = rtnl_valid_stats_req(nlh, netlink_strict_get_check(skb), false, extack); if (err) return err; ifsm = nlmsg_data(nlh); if (ifsm->family != AF_UNSPEC) { NL_SET_ERR_MSG(extack, "Address family should be AF_UNSPEC"); return -EINVAL; } if (ifsm->ifindex > 0) dev = __dev_get_by_index(net, ifsm->ifindex); else return -EINVAL; if (!dev) return -ENODEV; if (ifsm->filter_mask) { NL_SET_ERR_MSG(extack, "Filter mask must be 0 for stats set"); return -EINVAL; } err = nlmsg_parse(nlh, sizeof(*ifsm), tb, IFLA_STATS_GETSET_MAX, ifla_stats_set_policy, extack); if (err < 0) return err; if (tb[IFLA_STATS_SET_OFFLOAD_XSTATS_L3_STATS]) { u8 req = nla_get_u8(tb[IFLA_STATS_SET_OFFLOAD_XSTATS_L3_STATS]); if (req) err = netdev_offload_xstats_enable(dev, t_l3, extack); else err = netdev_offload_xstats_disable(dev, t_l3); if (!err) notify = true; else if (err != -EALREADY) return err; response_filters.mask[0] |= IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_OFFLOAD_XSTATS); response_filters.mask[IFLA_STATS_LINK_OFFLOAD_XSTATS] |= IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_HW_S_INFO); } if (notify) rtnl_offload_xstats_notify(dev); return 0; } static int rtnl_mdb_valid_dump_req(const struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct br_port_msg *bpm; if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*bpm))) { NL_SET_ERR_MSG(extack, "Invalid header for mdb dump request"); return -EINVAL; } bpm = nlmsg_data(nlh); if (bpm->ifindex) { NL_SET_ERR_MSG(extack, "Filtering by device index is not supported for mdb dump request"); return -EINVAL; } if (nlmsg_attrlen(nlh, sizeof(*bpm))) { NL_SET_ERR_MSG(extack, "Invalid data after header in mdb dump request"); return -EINVAL; } return 0; } struct rtnl_mdb_dump_ctx { long idx; }; static int rtnl_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb) { struct rtnl_mdb_dump_ctx *ctx = (void *)cb->ctx; struct net *net = sock_net(skb->sk); struct net_device *dev; int idx, s_idx; int err; NL_ASSERT_CTX_FITS(struct rtnl_mdb_dump_ctx); if (cb->strict_check) { err = rtnl_mdb_valid_dump_req(cb->nlh, cb->extack); if (err) return err; } s_idx = ctx->idx; idx = 0; for_each_netdev(net, dev) { if (idx < s_idx) goto skip; if (!dev->netdev_ops->ndo_mdb_dump) goto skip; err = dev->netdev_ops->ndo_mdb_dump(dev, skb, cb); if (err == -EMSGSIZE) goto out; /* Moving on to next device, reset markers and sequence * counters since they are all maintained per-device. */ memset(cb->ctx, 0, sizeof(cb->ctx)); cb->prev_seq = 0; cb->seq = 0; skip: idx++; } out: ctx->idx = idx; return skb->len; } static int rtnl_validate_mdb_entry_get(const struct nlattr *attr, struct netlink_ext_ack *extack) { struct br_mdb_entry *entry = nla_data(attr); if (nla_len(attr) != sizeof(struct br_mdb_entry)) { NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length"); return -EINVAL; } if (entry->ifindex) { NL_SET_ERR_MSG(extack, "Entry ifindex cannot be specified"); return -EINVAL; } if (entry->state) { NL_SET_ERR_MSG(extack, "Entry state cannot be specified"); return -EINVAL; } if (entry->flags) { NL_SET_ERR_MSG(extack, "Entry flags cannot be specified"); return -EINVAL; } if (entry->vid >= VLAN_VID_MASK) { NL_SET_ERR_MSG(extack, "Invalid entry VLAN id"); return -EINVAL; } if (entry->addr.proto != htons(ETH_P_IP) && entry->addr.proto != htons(ETH_P_IPV6) && entry->addr.proto != 0) { NL_SET_ERR_MSG(extack, "Unknown entry protocol"); return -EINVAL; } return 0; } static const struct nla_policy mdba_get_policy[MDBA_GET_ENTRY_MAX + 1] = { [MDBA_GET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, rtnl_validate_mdb_entry_get, sizeof(struct br_mdb_entry)), [MDBA_GET_ENTRY_ATTRS] = { .type = NLA_NESTED }, }; static int rtnl_mdb_get(struct sk_buff *in_skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct nlattr *tb[MDBA_GET_ENTRY_MAX + 1]; struct net *net = sock_net(in_skb->sk); struct br_port_msg *bpm; struct net_device *dev; int err; err = nlmsg_parse(nlh, sizeof(struct br_port_msg), tb, MDBA_GET_ENTRY_MAX, mdba_get_policy, extack); if (err) return err; bpm = nlmsg_data(nlh); if (!bpm->ifindex) { NL_SET_ERR_MSG(extack, "Invalid ifindex"); return -EINVAL; } dev = __dev_get_by_index(net, bpm->ifindex); if (!dev) { NL_SET_ERR_MSG(extack, "Device doesn't exist"); return -ENODEV; } if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_GET_ENTRY)) { NL_SET_ERR_MSG(extack, "Missing MDBA_GET_ENTRY attribute"); return -EINVAL; } if (!dev->netdev_ops->ndo_mdb_get) { NL_SET_ERR_MSG(extack, "Device does not support MDB operations"); return -EOPNOTSUPP; } return dev->netdev_ops->ndo_mdb_get(dev, tb, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, extack); } static int rtnl_validate_mdb_entry(const struct nlattr *attr, struct netlink_ext_ack *extack) { struct br_mdb_entry *entry = nla_data(attr); if (nla_len(attr) != sizeof(struct br_mdb_entry)) { NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length"); return -EINVAL; } if (entry->ifindex == 0) { NL_SET_ERR_MSG(extack, "Zero entry ifindex is not allowed"); return -EINVAL; } if (entry->addr.proto == htons(ETH_P_IP)) { if (!ipv4_is_multicast(entry->addr.u.ip4) && !ipv4_is_zeronet(entry->addr.u.ip4)) { NL_SET_ERR_MSG(extack, "IPv4 entry group address is not multicast or 0.0.0.0"); return -EINVAL; } if (ipv4_is_local_multicast(entry->addr.u.ip4)) { NL_SET_ERR_MSG(extack, "IPv4 entry group address is local multicast"); return -EINVAL; } #if IS_ENABLED(CONFIG_IPV6) } else if (entry->addr.proto == htons(ETH_P_IPV6)) { if (ipv6_addr_is_ll_all_nodes(&entry->addr.u.ip6)) { NL_SET_ERR_MSG(extack, "IPv6 entry group address is link-local all nodes"); return -EINVAL; } #endif } else if (entry->addr.proto == 0) { /* L2 mdb */ if (!is_multicast_ether_addr(entry->addr.u.mac_addr)) { NL_SET_ERR_MSG(extack, "L2 entry group is not multicast"); return -EINVAL; } } else { NL_SET_ERR_MSG(extack, "Unknown entry protocol"); return -EINVAL; } if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) { NL_SET_ERR_MSG(extack, "Unknown entry state"); return -EINVAL; } if (entry->vid >= VLAN_VID_MASK) { NL_SET_ERR_MSG(extack, "Invalid entry VLAN id"); return -EINVAL; } return 0; } static const struct nla_policy mdba_policy[MDBA_SET_ENTRY_MAX + 1] = { [MDBA_SET_ENTRY_UNSPEC] = { .strict_start_type = MDBA_SET_ENTRY_ATTRS + 1 }, [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, rtnl_validate_mdb_entry, sizeof(struct br_mdb_entry)), [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED }, }; static int rtnl_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1]; struct net *net = sock_net(skb->sk); struct br_port_msg *bpm; struct net_device *dev; int err; err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb, MDBA_SET_ENTRY_MAX, mdba_policy, extack); if (err) return err; bpm = nlmsg_data(nlh); if (!bpm->ifindex) { NL_SET_ERR_MSG(extack, "Invalid ifindex"); return -EINVAL; } dev = __dev_get_by_index(net, bpm->ifindex); if (!dev) { NL_SET_ERR_MSG(extack, "Device doesn't exist"); return -ENODEV; } if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) { NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute"); return -EINVAL; } if (!dev->netdev_ops->ndo_mdb_add) { NL_SET_ERR_MSG(extack, "Device does not support MDB operations"); return -EOPNOTSUPP; } return dev->netdev_ops->ndo_mdb_add(dev, tb, nlh->nlmsg_flags, extack); } static int rtnl_validate_mdb_entry_del_bulk(const struct nlattr *attr, struct netlink_ext_ack *extack) { struct br_mdb_entry *entry = nla_data(attr); struct br_mdb_entry zero_entry = {}; if (nla_len(attr) != sizeof(struct br_mdb_entry)) { NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length"); return -EINVAL; } if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) { NL_SET_ERR_MSG(extack, "Unknown entry state"); return -EINVAL; } if (entry->flags) { NL_SET_ERR_MSG(extack, "Entry flags cannot be set"); return -EINVAL; } if (entry->vid >= VLAN_N_VID - 1) { NL_SET_ERR_MSG(extack, "Invalid entry VLAN id"); return -EINVAL; } if (memcmp(&entry->addr, &zero_entry.addr, sizeof(entry->addr))) { NL_SET_ERR_MSG(extack, "Entry address cannot be set"); return -EINVAL; } return 0; } static const struct nla_policy mdba_del_bulk_policy[MDBA_SET_ENTRY_MAX + 1] = { [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, rtnl_validate_mdb_entry_del_bulk, sizeof(struct br_mdb_entry)), [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED }, }; static int rtnl_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { bool del_bulk = !!(nlh->nlmsg_flags & NLM_F_BULK); struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1]; struct net *net = sock_net(skb->sk); struct br_port_msg *bpm; struct net_device *dev; int err; if (!del_bulk) err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb, MDBA_SET_ENTRY_MAX, mdba_policy, extack); else err = nlmsg_parse(nlh, sizeof(*bpm), tb, MDBA_SET_ENTRY_MAX, mdba_del_bulk_policy, extack); if (err) return err; bpm = nlmsg_data(nlh); if (!bpm->ifindex) { NL_SET_ERR_MSG(extack, "Invalid ifindex"); return -EINVAL; } dev = __dev_get_by_index(net, bpm->ifindex); if (!dev) { NL_SET_ERR_MSG(extack, "Device doesn't exist"); return -ENODEV; } if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) { NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute"); return -EINVAL; } if (del_bulk) { if (!dev->netdev_ops->ndo_mdb_del_bulk) { NL_SET_ERR_MSG(extack, "Device does not support MDB bulk deletion"); return -EOPNOTSUPP; } return dev->netdev_ops->ndo_mdb_del_bulk(dev, tb, extack); } if (!dev->netdev_ops->ndo_mdb_del) { NL_SET_ERR_MSG(extack, "Device does not support MDB operations"); return -EOPNOTSUPP; } return dev->netdev_ops->ndo_mdb_del(dev, tb, extack); } /* Process one rtnetlink message. */ static int rtnl_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { const bool needs_lock = !(cb->flags & RTNL_FLAG_DUMP_UNLOCKED); rtnl_dumpit_func dumpit = cb->data; int err; /* Previous iteration have already finished, avoid calling->dumpit() * again, it may not expect to be called after it reached the end. */ if (!dumpit) return 0; if (needs_lock) rtnl_lock(); err = dumpit(skb, cb); if (needs_lock) rtnl_unlock(); /* Old dump handlers used to send NLM_DONE as in a separate recvmsg(). * Some applications which parse netlink manually depend on this. */ if (cb->flags & RTNL_FLAG_DUMP_SPLIT_NLM_DONE) { if (err < 0 && err != -EMSGSIZE) return err; if (!err) cb->data = NULL; return skb->len; } return err; } static int rtnetlink_dump_start(struct sock *ssk, struct sk_buff *skb, const struct nlmsghdr *nlh, struct netlink_dump_control *control) { if (control->flags & RTNL_FLAG_DUMP_SPLIT_NLM_DONE || !(control->flags & RTNL_FLAG_DUMP_UNLOCKED)) { WARN_ON(control->data); control->data = control->dump; control->dump = rtnl_dumpit; } return netlink_dump_start(ssk, skb, nlh, control); } static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct rtnl_link *link; enum rtnl_kinds kind; struct module *owner; int err = -EOPNOTSUPP; rtnl_doit_func doit; unsigned int flags; int family; int type; type = nlh->nlmsg_type; if (type > RTM_MAX) return -EOPNOTSUPP; type -= RTM_BASE; /* All the messages must have at least 1 byte length */ if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) return 0; family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; kind = rtnl_msgtype_kind(type); if (kind != RTNL_KIND_GET && !netlink_net_capable(skb, CAP_NET_ADMIN)) return -EPERM; rcu_read_lock(); if (kind == RTNL_KIND_GET && (nlh->nlmsg_flags & NLM_F_DUMP)) { struct sock *rtnl; rtnl_dumpit_func dumpit; u32 min_dump_alloc = 0; link = rtnl_get_link(family, type); if (!link || !link->dumpit) { family = PF_UNSPEC; link = rtnl_get_link(family, type); if (!link || !link->dumpit) goto err_unlock; } owner = link->owner; dumpit = link->dumpit; flags = link->flags; if (type == RTM_GETLINK - RTM_BASE) min_dump_alloc = rtnl_calcit(skb, nlh); err = 0; /* need to do this before rcu_read_unlock() */ if (!try_module_get(owner)) err = -EPROTONOSUPPORT; rcu_read_unlock(); rtnl = net->rtnl; if (err == 0) { struct netlink_dump_control c = { .dump = dumpit, .min_dump_alloc = min_dump_alloc, .module = owner, .flags = flags, }; err = rtnetlink_dump_start(rtnl, skb, nlh, &c); /* netlink_dump_start() will keep a reference on * module if dump is still in progress. */ module_put(owner); } return err; } link = rtnl_get_link(family, type); if (!link || !link->doit) { family = PF_UNSPEC; link = rtnl_get_link(PF_UNSPEC, type); if (!link || !link->doit) goto out_unlock; } owner = link->owner; if (!try_module_get(owner)) { err = -EPROTONOSUPPORT; goto out_unlock; } flags = link->flags; if (kind == RTNL_KIND_DEL && (nlh->nlmsg_flags & NLM_F_BULK) && !(flags & RTNL_FLAG_BULK_DEL_SUPPORTED)) { NL_SET_ERR_MSG(extack, "Bulk delete is not supported"); module_put(owner); goto err_unlock; } if (flags & RTNL_FLAG_DOIT_UNLOCKED) { doit = link->doit; rcu_read_unlock(); if (doit) err = doit(skb, nlh, extack); module_put(owner); return err; } rcu_read_unlock(); rtnl_lock(); link = rtnl_get_link(family, type); if (link && link->doit) err = link->doit(skb, nlh, extack); rtnl_unlock(); module_put(owner); return err; out_unlock: rcu_read_unlock(); return err; err_unlock: rcu_read_unlock(); return -EOPNOTSUPP; } static void rtnetlink_rcv(struct sk_buff *skb) { netlink_rcv_skb(skb, &rtnetlink_rcv_msg); } static int rtnetlink_bind(struct net *net, int group) { switch (group) { case RTNLGRP_IPV4_MROUTE_R: case RTNLGRP_IPV6_MROUTE_R: if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; break; } return 0; } static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); switch (event) { case NETDEV_REBOOT: case NETDEV_CHANGEMTU: case NETDEV_CHANGEADDR: case NETDEV_CHANGENAME: case NETDEV_FEAT_CHANGE: case NETDEV_BONDING_FAILOVER: case NETDEV_POST_TYPE_CHANGE: case NETDEV_NOTIFY_PEERS: case NETDEV_CHANGEUPPER: case NETDEV_RESEND_IGMP: case NETDEV_CHANGEINFODATA: case NETDEV_CHANGELOWERSTATE: case NETDEV_CHANGE_TX_QUEUE_LEN: rtmsg_ifinfo_event(RTM_NEWLINK, dev, 0, rtnl_get_event(event), GFP_KERNEL, NULL, 0, 0, NULL); break; default: break; } return NOTIFY_DONE; } static struct notifier_block rtnetlink_dev_notifier = { .notifier_call = rtnetlink_event, }; static int __net_init rtnetlink_net_init(struct net *net) { struct sock *sk; struct netlink_kernel_cfg cfg = { .groups = RTNLGRP_MAX, .input = rtnetlink_rcv, .flags = NL_CFG_F_NONROOT_RECV, .bind = rtnetlink_bind, }; sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); if (!sk) return -ENOMEM; net->rtnl = sk; return 0; } static void __net_exit rtnetlink_net_exit(struct net *net) { netlink_kernel_release(net->rtnl); net->rtnl = NULL; } static struct pernet_operations rtnetlink_net_ops = { .init = rtnetlink_net_init, .exit = rtnetlink_net_exit, }; static const struct rtnl_msg_handler rtnetlink_rtnl_msg_handlers[] __initconst = { {.msgtype = RTM_NEWLINK, .doit = rtnl_newlink, .flags = RTNL_FLAG_DOIT_PERNET}, {.msgtype = RTM_DELLINK, .doit = rtnl_dellink, .flags = RTNL_FLAG_DOIT_PERNET_WIP}, {.msgtype = RTM_GETLINK, .doit = rtnl_getlink, .dumpit = rtnl_dump_ifinfo, .flags = RTNL_FLAG_DUMP_SPLIT_NLM_DONE}, {.msgtype = RTM_SETLINK, .doit = rtnl_setlink, .flags = RTNL_FLAG_DOIT_PERNET_WIP}, {.msgtype = RTM_GETADDR, .dumpit = rtnl_dump_all}, {.msgtype = RTM_GETROUTE, .dumpit = rtnl_dump_all}, {.msgtype = RTM_GETNETCONF, .dumpit = rtnl_dump_all}, {.msgtype = RTM_GETSTATS, .doit = rtnl_stats_get, .dumpit = rtnl_stats_dump}, {.msgtype = RTM_SETSTATS, .doit = rtnl_stats_set}, {.msgtype = RTM_NEWLINKPROP, .doit = rtnl_newlinkprop}, {.msgtype = RTM_DELLINKPROP, .doit = rtnl_dellinkprop}, {.protocol = PF_BRIDGE, .msgtype = RTM_GETLINK, .dumpit = rtnl_bridge_getlink}, {.protocol = PF_BRIDGE, .msgtype = RTM_DELLINK, .doit = rtnl_bridge_dellink}, {.protocol = PF_BRIDGE, .msgtype = RTM_SETLINK, .doit = rtnl_bridge_setlink}, {.protocol = PF_BRIDGE, .msgtype = RTM_NEWNEIGH, .doit = rtnl_fdb_add}, {.protocol = PF_BRIDGE, .msgtype = RTM_DELNEIGH, .doit = rtnl_fdb_del, .flags = RTNL_FLAG_BULK_DEL_SUPPORTED}, {.protocol = PF_BRIDGE, .msgtype = RTM_GETNEIGH, .doit = rtnl_fdb_get, .dumpit = rtnl_fdb_dump}, {.protocol = PF_BRIDGE, .msgtype = RTM_NEWMDB, .doit = rtnl_mdb_add}, {.protocol = PF_BRIDGE, .msgtype = RTM_DELMDB, .doit = rtnl_mdb_del, .flags = RTNL_FLAG_BULK_DEL_SUPPORTED}, {.protocol = PF_BRIDGE, .msgtype = RTM_GETMDB, .doit = rtnl_mdb_get, .dumpit = rtnl_mdb_dump}, }; void __init rtnetlink_init(void) { if (register_pernet_subsys(&rtnetlink_net_ops)) panic("rtnetlink_init: cannot initialize rtnetlink\n"); register_netdevice_notifier(&rtnetlink_dev_notifier); rtnl_register_many(rtnetlink_rtnl_msg_handlers); } |
| 242 242 242 240 196 195 242 222 246 221 222 220 248 248 247 248 70 70 213 214 214 213 70 70 70 70 70 214 214 214 214 247 248 248 246 248 248 203 248 248 | 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Device management routines * Copyright (c) by Jaroslav Kysela <perex@perex.cz> */ #include <linux/slab.h> #include <linux/time.h> #include <linux/export.h> #include <linux/errno.h> #include <sound/core.h> /** * snd_device_new - create an ALSA device component * @card: the card instance * @type: the device type, SNDRV_DEV_XXX * @device_data: the data pointer of this device * @ops: the operator table * * Creates a new device component for the given data pointer. * The device will be assigned to the card and managed together * by the card. * * The data pointer plays a role as the identifier, too, so the * pointer address must be unique and unchanged. * * Return: Zero if successful, or a negative error code on failure. */ int snd_device_new(struct snd_card *card, enum snd_device_type type, void *device_data, const struct snd_device_ops *ops) { struct snd_device *dev; struct list_head *p; if (snd_BUG_ON(!card || !device_data || !ops)) return -ENXIO; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; INIT_LIST_HEAD(&dev->list); dev->card = card; dev->type = type; dev->state = SNDRV_DEV_BUILD; dev->device_data = device_data; dev->ops = ops; /* insert the entry in an incrementally sorted list */ list_for_each_prev(p, &card->devices) { struct snd_device *pdev = list_entry(p, struct snd_device, list); if ((unsigned int)pdev->type <= (unsigned int)type) break; } list_add(&dev->list, p); return 0; } EXPORT_SYMBOL(snd_device_new); static void __snd_device_disconnect(struct snd_device *dev) { if (dev->state == SNDRV_DEV_REGISTERED) { if (dev->ops->dev_disconnect && dev->ops->dev_disconnect(dev)) dev_err(dev->card->dev, "device disconnect failure\n"); dev->state = SNDRV_DEV_DISCONNECTED; } } static void __snd_device_free(struct snd_device *dev) { /* unlink */ list_del(&dev->list); __snd_device_disconnect(dev); if (dev->ops->dev_free) { if (dev->ops->dev_free(dev)) dev_err(dev->card->dev, "device free failure\n"); } kfree(dev); } static struct snd_device *look_for_dev(struct snd_card *card, void *device_data) { struct snd_device *dev; list_for_each_entry(dev, &card->devices, list) if (dev->device_data == device_data) return dev; return NULL; } /** * snd_device_disconnect - disconnect the device * @card: the card instance * @device_data: the data pointer to disconnect * * Turns the device into the disconnection state, invoking * dev_disconnect callback, if the device was already registered. * * Usually called from snd_card_disconnect(). * * Return: Zero if successful, or a negative error code on failure or if the * device not found. */ void snd_device_disconnect(struct snd_card *card, void *device_data) { struct snd_device *dev; if (snd_BUG_ON(!card || !device_data)) return; dev = look_for_dev(card, device_data); if (dev) __snd_device_disconnect(dev); else dev_dbg(card->dev, "device disconnect %p (from %pS), not found\n", device_data, __builtin_return_address(0)); } EXPORT_SYMBOL_GPL(snd_device_disconnect); /** * snd_device_free - release the device from the card * @card: the card instance * @device_data: the data pointer to release * * Removes the device from the list on the card and invokes the * callbacks, dev_disconnect and dev_free, corresponding to the state. * Then release the device. */ void snd_device_free(struct snd_card *card, void *device_data) { struct snd_device *dev; if (snd_BUG_ON(!card || !device_data)) return; dev = look_for_dev(card, device_data); if (dev) __snd_device_free(dev); else dev_dbg(card->dev, "device free %p (from %pS), not found\n", device_data, __builtin_return_address(0)); } EXPORT_SYMBOL(snd_device_free); static int __snd_device_register(struct snd_device *dev) { if (dev->state == SNDRV_DEV_BUILD) { if (dev->ops->dev_register) { int err = dev->ops->dev_register(dev); if (err < 0) return err; } dev->state = SNDRV_DEV_REGISTERED; } return 0; } /** * snd_device_register - register the device * @card: the card instance * @device_data: the data pointer to register * * Registers the device which was already created via * snd_device_new(). Usually this is called from snd_card_register(), * but it can be called later if any new devices are created after * invocation of snd_card_register(). * * Return: Zero if successful, or a negative error code on failure or if the * device not found. */ int snd_device_register(struct snd_card *card, void *device_data) { struct snd_device *dev; if (snd_BUG_ON(!card || !device_data)) return -ENXIO; dev = look_for_dev(card, device_data); if (dev) return __snd_device_register(dev); snd_BUG(); return -ENXIO; } EXPORT_SYMBOL(snd_device_register); /* * register all the devices on the card. * called from init.c */ int snd_device_register_all(struct snd_card *card) { struct snd_device *dev; int err; if (snd_BUG_ON(!card)) return -ENXIO; list_for_each_entry(dev, &card->devices, list) { err = __snd_device_register(dev); if (err < 0) return err; } return 0; } /* * disconnect all the devices on the card. * called from init.c */ void snd_device_disconnect_all(struct snd_card *card) { struct snd_device *dev; if (snd_BUG_ON(!card)) return; list_for_each_entry_reverse(dev, &card->devices, list) __snd_device_disconnect(dev); } /* * release all the devices on the card. * called from init.c */ void snd_device_free_all(struct snd_card *card) { struct snd_device *dev, *next; if (snd_BUG_ON(!card)) return; list_for_each_entry_safe_reverse(dev, next, &card->devices, list) { /* exception: free ctl and lowlevel stuff later */ if (dev->type == SNDRV_DEV_CONTROL || dev->type == SNDRV_DEV_LOWLEVEL) continue; __snd_device_free(dev); } /* free all */ list_for_each_entry_safe_reverse(dev, next, &card->devices, list) __snd_device_free(dev); } /** * snd_device_get_state - Get the current state of the given device * @card: the card instance * @device_data: the data pointer to release * * Returns the current state of the given device object. For the valid * device, either @SNDRV_DEV_BUILD, @SNDRV_DEV_REGISTERED or * @SNDRV_DEV_DISCONNECTED is returned. * Or for a non-existing device, -1 is returned as an error. * * Return: the current state, or -1 if not found */ int snd_device_get_state(struct snd_card *card, void *device_data) { struct snd_device *dev; dev = look_for_dev(card, device_data); if (dev) return dev->state; return -1; } EXPORT_SYMBOL_GPL(snd_device_get_state); |
| 2 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 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 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* delayacct.h - per-task delay accounting * * Copyright (C) Shailabh Nagar, IBM Corp. 2006 */ #ifndef _LINUX_DELAYACCT_H #define _LINUX_DELAYACCT_H #include <uapi/linux/taskstats.h> #ifdef CONFIG_TASK_DELAY_ACCT struct task_delay_info { raw_spinlock_t lock; /* For each stat XXX, add following, aligned appropriately * * struct timespec XXX_start, XXX_end; * u64 XXX_delay; * u32 XXX_count; * * Atomicity of updates to XXX_delay, XXX_count protected by * single lock above (split into XXX_lock if contention is an issue). */ /* * XXX_count is incremented on every XXX operation, the delay * associated with the operation is added to XXX_delay. * XXX_delay contains the accumulated delay time in nanoseconds. */ u64 blkio_start; u64 blkio_delay_max; u64 blkio_delay_min; u64 blkio_delay; /* wait for sync block io completion */ u64 swapin_start; u64 swapin_delay_max; u64 swapin_delay_min; u64 swapin_delay; /* wait for swapin */ u32 blkio_count; /* total count of the number of sync block */ /* io operations performed */ u32 swapin_count; /* total count of swapin */ u64 freepages_start; u64 freepages_delay_max; u64 freepages_delay_min; u64 freepages_delay; /* wait for memory reclaim */ u64 thrashing_start; u64 thrashing_delay_max; u64 thrashing_delay_min; u64 thrashing_delay; /* wait for thrashing page */ u64 compact_start; u64 compact_delay_max; u64 compact_delay_min; u64 compact_delay; /* wait for memory compact */ u64 wpcopy_start; u64 wpcopy_delay_max; u64 wpcopy_delay_min; u64 wpcopy_delay; /* wait for write-protect copy */ u64 irq_delay_max; u64 irq_delay_min; u64 irq_delay; /* wait for IRQ/SOFTIRQ */ u32 freepages_count; /* total count of memory reclaim */ u32 thrashing_count; /* total count of thrash waits */ u32 compact_count; /* total count of memory compact */ u32 wpcopy_count; /* total count of write-protect copy */ u32 irq_count; /* total count of IRQ/SOFTIRQ */ }; #endif #include <linux/sched.h> #include <linux/slab.h> #include <linux/jump_label.h> #ifdef CONFIG_TASK_DELAY_ACCT DECLARE_STATIC_KEY_FALSE(delayacct_key); extern int delayacct_on; /* Delay accounting turned on/off */ extern struct kmem_cache *delayacct_cache; extern void delayacct_init(void); extern void __delayacct_tsk_init(struct task_struct *); extern void __delayacct_tsk_exit(struct task_struct *); extern void __delayacct_blkio_start(void); extern void __delayacct_blkio_end(struct task_struct *); extern int delayacct_add_tsk(struct taskstats *, struct task_struct *); extern __u64 __delayacct_blkio_ticks(struct task_struct *); extern void __delayacct_freepages_start(void); extern void __delayacct_freepages_end(void); extern void __delayacct_thrashing_start(bool *in_thrashing); extern void __delayacct_thrashing_end(bool *in_thrashing); extern void __delayacct_swapin_start(void); extern void __delayacct_swapin_end(void); extern void __delayacct_compact_start(void); extern void __delayacct_compact_end(void); extern void __delayacct_wpcopy_start(void); extern void __delayacct_wpcopy_end(void); extern void __delayacct_irq(struct task_struct *task, u32 delta); static inline void delayacct_tsk_init(struct task_struct *tsk) { /* reinitialize in case parent's non-null pointer was dup'ed*/ tsk->delays = NULL; if (delayacct_on) __delayacct_tsk_init(tsk); } /* Free tsk->delays. Called from bad fork and __put_task_struct * where there's no risk of tsk->delays being accessed elsewhere */ static inline void delayacct_tsk_free(struct task_struct *tsk) { if (tsk->delays) kmem_cache_free(delayacct_cache, tsk->delays); tsk->delays = NULL; } static inline void delayacct_blkio_start(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_blkio_start(); } static inline void delayacct_blkio_end(struct task_struct *p) { if (!static_branch_unlikely(&delayacct_key)) return; if (p->delays) __delayacct_blkio_end(p); } static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk) { if (tsk->delays) return __delayacct_blkio_ticks(tsk); return 0; } static inline void delayacct_freepages_start(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_freepages_start(); } static inline void delayacct_freepages_end(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_freepages_end(); } static inline void delayacct_thrashing_start(bool *in_thrashing) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_thrashing_start(in_thrashing); } static inline void delayacct_thrashing_end(bool *in_thrashing) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_thrashing_end(in_thrashing); } static inline void delayacct_swapin_start(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_swapin_start(); } static inline void delayacct_swapin_end(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_swapin_end(); } static inline void delayacct_compact_start(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_compact_start(); } static inline void delayacct_compact_end(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_compact_end(); } static inline void delayacct_wpcopy_start(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_wpcopy_start(); } static inline void delayacct_wpcopy_end(void) { if (!static_branch_unlikely(&delayacct_key)) return; if (current->delays) __delayacct_wpcopy_end(); } static inline void delayacct_irq(struct task_struct *task, u32 delta) { if (!static_branch_unlikely(&delayacct_key)) return; if (task->delays) __delayacct_irq(task, delta); } #else static inline void delayacct_init(void) {} static inline void delayacct_tsk_init(struct task_struct *tsk) {} static inline void delayacct_tsk_free(struct task_struct *tsk) {} static inline void delayacct_blkio_start(void) {} static inline void delayacct_blkio_end(struct task_struct *p) {} static inline int delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk) { return 0; } static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk) { return 0; } static inline int delayacct_is_task_waiting_on_io(struct task_struct *p) { return 0; } static inline void delayacct_freepages_start(void) {} static inline void delayacct_freepages_end(void) {} static inline void delayacct_thrashing_start(bool *in_thrashing) {} static inline void delayacct_thrashing_end(bool *in_thrashing) {} static inline void delayacct_swapin_start(void) {} static inline void delayacct_swapin_end(void) {} static inline void delayacct_compact_start(void) {} static inline void delayacct_compact_end(void) {} static inline void delayacct_wpcopy_start(void) {} static inline void delayacct_wpcopy_end(void) {} static inline void delayacct_irq(struct task_struct *task, u32 delta) {} #endif /* CONFIG_TASK_DELAY_ACCT */ #endif |
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5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 | // SPDX-License-Identifier: GPL-2.0-or-later /* * OV519 driver * * Copyright (C) 2008-2011 Jean-François Moine <moinejf@free.fr> * Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com> * * This module is adapted from the ov51x-jpeg package, which itself * was adapted from the ov511 driver. * * Original copyright for the ov511 driver is: * * Copyright (c) 1999-2006 Mark W. McClelland * Support for OV519, OV8610 Copyright (c) 2003 Joerg Heckenbach * Many improvements by Bret Wallach <bwallac1@san.rr.com> * Color fixes by by Orion Sky Lawlor <olawlor@acm.org> (2/26/2000) * OV7620 fixes by Charl P. Botha <cpbotha@ieee.org> * Changes by Claudio Matsuoka <claudio@conectiva.com> * * ov51x-jpeg original copyright is: * * Copyright (c) 2004-2007 Romain Beauxis <toots@rastageeks.org> * Support for OV7670 sensors was contributed by Sam Skipsey <aoanla@yahoo.com> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "ov519" #include <linux/input.h> #include "gspca.h" /* The jpeg_hdr is used by w996Xcf only */ /* The CONEX_CAM define for jpeg.h needs renaming, now its used here too */ #define CONEX_CAM #include "jpeg.h" MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>"); MODULE_DESCRIPTION("OV519 USB Camera Driver"); MODULE_LICENSE("GPL"); /* global parameters */ static int frame_rate; /* Number of times to retry a failed I2C transaction. Increase this if you * are getting "Failed to read sensor ID..." */ static int i2c_detect_tries = 10; /* ov519 device descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ struct v4l2_ctrl *jpegqual; struct v4l2_ctrl *freq; struct { /* h/vflip control cluster */ struct v4l2_ctrl *hflip; struct v4l2_ctrl *vflip; }; struct { /* autobrightness/brightness control cluster */ struct v4l2_ctrl *autobright; struct v4l2_ctrl *brightness; }; u8 revision; u8 packet_nr; char bridge; #define BRIDGE_OV511 0 #define BRIDGE_OV511PLUS 1 #define BRIDGE_OV518 2 #define BRIDGE_OV518PLUS 3 #define BRIDGE_OV519 4 /* = ov530 */ #define BRIDGE_OVFX2 5 #define BRIDGE_W9968CF 6 #define BRIDGE_MASK 7 char invert_led; #define BRIDGE_INVERT_LED 8 char snapshot_pressed; char snapshot_needs_reset; /* Determined by sensor type */ u8 sif; #define QUALITY_MIN 50 #define QUALITY_MAX 70 #define QUALITY_DEF 50 u8 stopped; /* Streaming is temporarily paused */ u8 first_frame; u8 frame_rate; /* current Framerate */ u8 clockdiv; /* clockdiv override */ s8 sensor; /* Type of image sensor chip (SEN_*) */ u8 sensor_addr; u16 sensor_width; u16 sensor_height; s16 sensor_reg_cache[256]; u8 jpeg_hdr[JPEG_HDR_SZ]; }; enum sensors { SEN_OV2610, SEN_OV2610AE, SEN_OV3610, SEN_OV6620, SEN_OV6630, SEN_OV66308AF, SEN_OV7610, SEN_OV7620, SEN_OV7620AE, SEN_OV7640, SEN_OV7648, SEN_OV7660, SEN_OV7670, SEN_OV76BE, SEN_OV8610, SEN_OV9600, }; /* Note this is a bit of a hack, but the w9968cf driver needs the code for all the ov sensors which is already present here. When we have the time we really should move the sensor drivers to v4l2 sub drivers. */ #include "w996Xcf.c" /* table of the disabled controls */ struct ctrl_valid { unsigned int has_brightness:1; unsigned int has_contrast:1; unsigned int has_exposure:1; unsigned int has_autogain:1; unsigned int has_sat:1; unsigned int has_hvflip:1; unsigned int has_autobright:1; unsigned int has_freq:1; }; static const struct ctrl_valid valid_controls[] = { [SEN_OV2610] = { .has_exposure = 1, .has_autogain = 1, }, [SEN_OV2610AE] = { .has_exposure = 1, .has_autogain = 1, }, [SEN_OV3610] = { /* No controls */ }, [SEN_OV6620] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, .has_freq = 1, }, [SEN_OV6630] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, .has_freq = 1, }, [SEN_OV66308AF] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, .has_freq = 1, }, [SEN_OV7610] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, .has_freq = 1, }, [SEN_OV7620] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, .has_freq = 1, }, [SEN_OV7620AE] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, .has_freq = 1, }, [SEN_OV7640] = { .has_brightness = 1, .has_sat = 1, .has_freq = 1, }, [SEN_OV7648] = { .has_brightness = 1, .has_sat = 1, .has_freq = 1, }, [SEN_OV7660] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_hvflip = 1, .has_freq = 1, }, [SEN_OV7670] = { .has_brightness = 1, .has_contrast = 1, .has_hvflip = 1, .has_freq = 1, }, [SEN_OV76BE] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, .has_freq = 1, }, [SEN_OV8610] = { .has_brightness = 1, .has_contrast = 1, .has_sat = 1, .has_autobright = 1, }, [SEN_OV9600] = { .has_exposure = 1, .has_autogain = 1, }, }; static const struct v4l2_pix_format ov519_vga_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}, }; static const struct v4l2_pix_format ov519_sif_mode[] = { {160, 120, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 3}, {176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 1}, {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 2}, {352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; /* Note some of the sizeimage values for the ov511 / ov518 may seem larger then necessary, however they need to be this big as the ov511 / ov518 always fills the entire isoc frame, using 0 padding bytes when it doesn't have any data. So with low framerates the amount of data transferred can become quite large (libv4l will remove all the 0 padding in userspace). */ static const struct v4l2_pix_format ov518_vga_mode[] = { {320, 240, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 1}, {640, 480, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480 * 2, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; static const struct v4l2_pix_format ov518_sif_mode[] = { {160, 120, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 70000, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 3}, {176, 144, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 70000, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 1}, {320, 240, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 2}, {352, 288, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 3, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; static const struct v4l2_pix_format ov511_vga_mode[] = { {320, 240, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 1}, {640, 480, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480 * 2, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; static const struct v4l2_pix_format ov511_sif_mode[] = { {160, 120, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 70000, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 3}, {176, 144, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 70000, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 1}, {320, 240, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 2}, {352, 288, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 3, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; static const struct v4l2_pix_format ovfx2_ov2610_mode[] = { {800, 600, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 800, .sizeimage = 800 * 600, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {1600, 1200, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 1600, .sizeimage = 1600 * 1200, .colorspace = V4L2_COLORSPACE_SRGB}, }; static const struct v4l2_pix_format ovfx2_ov3610_mode[] = { {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {800, 600, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 800, .sizeimage = 800 * 600, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {1024, 768, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 1024, .sizeimage = 1024 * 768, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {1600, 1200, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 1600, .sizeimage = 1600 * 1200, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, {2048, 1536, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 2048, .sizeimage = 2048 * 1536, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; static const struct v4l2_pix_format ovfx2_ov9600_mode[] = { {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {1280, 1024, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 1280, .sizeimage = 1280 * 1024, .colorspace = V4L2_COLORSPACE_SRGB}, }; /* Registers common to OV511 / OV518 */ #define R51x_FIFO_PSIZE 0x30 /* 2 bytes wide w/ OV518(+) */ #define R51x_SYS_RESET 0x50 /* Reset type flags */ #define OV511_RESET_OMNICE 0x08 #define R51x_SYS_INIT 0x53 #define R51x_SYS_SNAP 0x52 #define R51x_SYS_CUST_ID 0x5f #define R51x_COMP_LUT_BEGIN 0x80 /* OV511 Camera interface register numbers */ #define R511_CAM_DELAY 0x10 #define R511_CAM_EDGE 0x11 #define R511_CAM_PXCNT 0x12 #define R511_CAM_LNCNT 0x13 #define R511_CAM_PXDIV 0x14 #define R511_CAM_LNDIV 0x15 #define R511_CAM_UV_EN 0x16 #define R511_CAM_LINE_MODE 0x17 #define R511_CAM_OPTS 0x18 #define R511_SNAP_FRAME 0x19 #define R511_SNAP_PXCNT 0x1a #define R511_SNAP_LNCNT 0x1b #define R511_SNAP_PXDIV 0x1c #define R511_SNAP_LNDIV 0x1d #define R511_SNAP_UV_EN 0x1e #define R511_SNAP_OPTS 0x1f #define R511_DRAM_FLOW_CTL 0x20 #define R511_FIFO_OPTS 0x31 #define R511_I2C_CTL 0x40 #define R511_SYS_LED_CTL 0x55 /* OV511+ only */ #define R511_COMP_EN 0x78 #define R511_COMP_LUT_EN 0x79 /* OV518 Camera interface register numbers */ #define R518_GPIO_OUT 0x56 /* OV518(+) only */ #define R518_GPIO_CTL 0x57 /* OV518(+) only */ /* OV519 Camera interface register numbers */ #define OV519_R10_H_SIZE 0x10 #define OV519_R11_V_SIZE 0x11 #define OV519_R12_X_OFFSETL 0x12 #define OV519_R13_X_OFFSETH 0x13 #define OV519_R14_Y_OFFSETL 0x14 #define OV519_R15_Y_OFFSETH 0x15 #define OV519_R16_DIVIDER 0x16 #define OV519_R20_DFR 0x20 #define OV519_R25_FORMAT 0x25 /* OV519 System Controller register numbers */ #define OV519_R51_RESET1 0x51 #define OV519_R54_EN_CLK1 0x54 #define OV519_R57_SNAPSHOT 0x57 #define OV519_GPIO_DATA_OUT0 0x71 #define OV519_GPIO_IO_CTRL0 0x72 /*#define OV511_ENDPOINT_ADDRESS 1 * Isoc endpoint number */ /* * The FX2 chip does not give us a zero length read at end of frame. * It does, however, give a short read at the end of a frame, if * necessary, rather than run two frames together. * * By choosing the right bulk transfer size, we are guaranteed to always * get a short read for the last read of each frame. Frame sizes are * always a composite number (width * height, or a multiple) so if we * choose a prime number, we are guaranteed that the last read of a * frame will be short. * * But it isn't that easy: the 2.6 kernel requires a multiple of 4KB, * otherwise EOVERFLOW "babbling" errors occur. I have not been able * to figure out why. [PMiller] * * The constant (13 * 4096) is the largest "prime enough" number less than 64KB. * * It isn't enough to know the number of bytes per frame, in case we * have data dropouts or buffer overruns (even though the FX2 double * buffers, there are some pretty strict real time constraints for * isochronous transfer for larger frame sizes). */ /*jfm: this value does not work for 800x600 - see isoc_init */ #define OVFX2_BULK_SIZE (13 * 4096) /* I2C registers */ #define R51x_I2C_W_SID 0x41 #define R51x_I2C_SADDR_3 0x42 #define R51x_I2C_SADDR_2 0x43 #define R51x_I2C_R_SID 0x44 #define R51x_I2C_DATA 0x45 #define R518_I2C_CTL 0x47 /* OV518(+) only */ #define OVFX2_I2C_ADDR 0x00 /* I2C ADDRESSES */ #define OV7xx0_SID 0x42 #define OV_HIRES_SID 0x60 /* OV9xxx / OV2xxx / OV3xxx */ #define OV8xx0_SID 0xa0 #define OV6xx0_SID 0xc0 /* OV7610 registers */ #define OV7610_REG_GAIN 0x00 /* gain setting (5:0) */ #define OV7610_REG_BLUE 0x01 /* blue channel balance */ #define OV7610_REG_RED 0x02 /* red channel balance */ #define OV7610_REG_SAT 0x03 /* saturation */ #define OV8610_REG_HUE 0x04 /* 04 reserved */ #define OV7610_REG_CNT 0x05 /* Y contrast */ #define OV7610_REG_BRT 0x06 /* Y brightness */ #define OV7610_REG_COM_C 0x14 /* misc common regs */ #define OV7610_REG_ID_HIGH 0x1c /* manufacturer ID MSB */ #define OV7610_REG_ID_LOW 0x1d /* manufacturer ID LSB */ #define OV7610_REG_COM_I 0x29 /* misc settings */ /* OV7660 and OV7670 registers */ #define OV7670_R00_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */ #define OV7670_R01_BLUE 0x01 /* blue gain */ #define OV7670_R02_RED 0x02 /* red gain */ #define OV7670_R03_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */ #define OV7670_R04_COM1 0x04 /* Control 1 */ /*#define OV7670_R07_AECHH 0x07 * AEC MS 5 bits */ #define OV7670_R0C_COM3 0x0c /* Control 3 */ #define OV7670_R0D_COM4 0x0d /* Control 4 */ #define OV7670_R0E_COM5 0x0e /* All "reserved" */ #define OV7670_R0F_COM6 0x0f /* Control 6 */ #define OV7670_R10_AECH 0x10 /* More bits of AEC value */ #define OV7670_R11_CLKRC 0x11 /* Clock control */ #define OV7670_R12_COM7 0x12 /* Control 7 */ #define OV7670_COM7_FMT_VGA 0x00 /*#define OV7670_COM7_YUV 0x00 * YUV */ #define OV7670_COM7_FMT_QVGA 0x10 /* QVGA format */ #define OV7670_COM7_FMT_MASK 0x38 #define OV7670_COM7_RESET 0x80 /* Register reset */ #define OV7670_R13_COM8 0x13 /* Control 8 */ #define OV7670_COM8_AEC 0x01 /* Auto exposure enable */ #define OV7670_COM8_AWB 0x02 /* White balance enable */ #define OV7670_COM8_AGC 0x04 /* Auto gain enable */ #define OV7670_COM8_BFILT 0x20 /* Band filter enable */ #define OV7670_COM8_AECSTEP 0x40 /* Unlimited AEC step size */ #define OV7670_COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */ #define OV7670_R14_COM9 0x14 /* Control 9 - gain ceiling */ #define OV7670_R15_COM10 0x15 /* Control 10 */ #define OV7670_R17_HSTART 0x17 /* Horiz start high bits */ #define OV7670_R18_HSTOP 0x18 /* Horiz stop high bits */ #define OV7670_R19_VSTART 0x19 /* Vert start high bits */ #define OV7670_R1A_VSTOP 0x1a /* Vert stop high bits */ #define OV7670_R1E_MVFP 0x1e /* Mirror / vflip */ #define OV7670_MVFP_VFLIP 0x10 /* vertical flip */ #define OV7670_MVFP_MIRROR 0x20 /* Mirror image */ #define OV7670_R24_AEW 0x24 /* AGC upper limit */ #define OV7670_R25_AEB 0x25 /* AGC lower limit */ #define OV7670_R26_VPT 0x26 /* AGC/AEC fast mode op region */ #define OV7670_R32_HREF 0x32 /* HREF pieces */ #define OV7670_R3A_TSLB 0x3a /* lots of stuff */ #define OV7670_R3B_COM11 0x3b /* Control 11 */ #define OV7670_COM11_EXP 0x02 #define OV7670_COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */ #define OV7670_R3C_COM12 0x3c /* Control 12 */ #define OV7670_R3D_COM13 0x3d /* Control 13 */ #define OV7670_COM13_GAMMA 0x80 /* Gamma enable */ #define OV7670_COM13_UVSAT 0x40 /* UV saturation auto adjustment */ #define OV7670_R3E_COM14 0x3e /* Control 14 */ #define OV7670_R3F_EDGE 0x3f /* Edge enhancement factor */ #define OV7670_R40_COM15 0x40 /* Control 15 */ /*#define OV7670_COM15_R00FF 0xc0 * 00 to FF */ #define OV7670_R41_COM16 0x41 /* Control 16 */ #define OV7670_COM16_AWBGAIN 0x08 /* AWB gain enable */ /* end of ov7660 common registers */ #define OV7670_R55_BRIGHT 0x55 /* Brightness */ #define OV7670_R56_CONTRAS 0x56 /* Contrast control */ #define OV7670_R69_GFIX 0x69 /* Fix gain control */ /*#define OV7670_R8C_RGB444 0x8c * RGB 444 control */ #define OV7670_R9F_HAECC1 0x9f /* Hist AEC/AGC control 1 */ #define OV7670_RA0_HAECC2 0xa0 /* Hist AEC/AGC control 2 */ #define OV7670_RA5_BD50MAX 0xa5 /* 50hz banding step limit */ #define OV7670_RA6_HAECC3 0xa6 /* Hist AEC/AGC control 3 */ #define OV7670_RA7_HAECC4 0xa7 /* Hist AEC/AGC control 4 */ #define OV7670_RA8_HAECC5 0xa8 /* Hist AEC/AGC control 5 */ #define OV7670_RA9_HAECC6 0xa9 /* Hist AEC/AGC control 6 */ #define OV7670_RAA_HAECC7 0xaa /* Hist AEC/AGC control 7 */ #define OV7670_RAB_BD60MAX 0xab /* 60hz banding step limit */ struct ov_regvals { u8 reg; u8 val; }; struct ov_i2c_regvals { u8 reg; u8 val; }; /* Settings for OV2610 camera chip */ static const struct ov_i2c_regvals norm_2610[] = { { 0x12, 0x80 }, /* reset */ }; static const struct ov_i2c_regvals norm_2610ae[] = { {0x12, 0x80}, /* reset */ {0x13, 0xcd}, {0x09, 0x01}, {0x0d, 0x00}, {0x11, 0x80}, {0x12, 0x20}, /* 1600x1200 */ {0x33, 0x0c}, {0x35, 0x90}, {0x36, 0x37}, /* ms-win traces */ {0x11, 0x83}, /* clock / 3 ? */ {0x2d, 0x00}, /* 60 Hz filter */ {0x24, 0xb0}, /* normal colors */ {0x25, 0x90}, {0x10, 0x43}, }; static const struct ov_i2c_regvals norm_3620b[] = { /* * From the datasheet: "Note that after writing to register COMH * (0x12) to change the sensor mode, registers related to the * sensor's cropping window will be reset back to their default * values." * * "wait 4096 external clock ... to make sure the sensor is * stable and ready to access registers" i.e. 160us at 24MHz */ { 0x12, 0x80 }, /* COMH reset */ { 0x12, 0x00 }, /* QXGA, master */ /* * 11 CLKRC "Clock Rate Control" * [7] internal frequency doublers: on * [6] video port mode: master * [5:0] clock divider: 1 */ { 0x11, 0x80 }, /* * 13 COMI "Common Control I" * = 192 (0xC0) 11000000 * COMI[7] "AEC speed selection" * = 1 (0x01) 1....... "Faster AEC correction" * COMI[6] "AEC speed step selection" * = 1 (0x01) .1...... "Big steps, fast" * COMI[5] "Banding filter on off" * = 0 (0x00) ..0..... "Off" * COMI[4] "Banding filter option" * = 0 (0x00) ...0.... "Main clock is 48 MHz and * the PLL is ON" * COMI[3] "Reserved" * = 0 (0x00) ....0... * COMI[2] "AGC auto manual control selection" * = 0 (0x00) .....0.. "Manual" * COMI[1] "AWB auto manual control selection" * = 0 (0x00) ......0. "Manual" * COMI[0] "Exposure control" * = 0 (0x00) .......0 "Manual" */ { 0x13, 0xc0 }, /* * 09 COMC "Common Control C" * = 8 (0x08) 00001000 * COMC[7:5] "Reserved" * = 0 (0x00) 000..... * COMC[4] "Sleep Mode Enable" * = 0 (0x00) ...0.... "Normal mode" * COMC[3:2] "Sensor sampling reset timing selection" * = 2 (0x02) ....10.. "Longer reset time" * COMC[1:0] "Output drive current select" * = 0 (0x00) ......00 "Weakest" */ { 0x09, 0x08 }, /* * 0C COMD "Common Control D" * = 8 (0x08) 00001000 * COMD[7] "Reserved" * = 0 (0x00) 0....... * COMD[6] "Swap MSB and LSB at the output port" * = 0 (0x00) .0...... "False" * COMD[5:3] "Reserved" * = 1 (0x01) ..001... * COMD[2] "Output Average On Off" * = 0 (0x00) .....0.. "Output Normal" * COMD[1] "Sensor precharge voltage selection" * = 0 (0x00) ......0. "Selects internal * reference precharge * voltage" * COMD[0] "Snapshot option" * = 0 (0x00) .......0 "Enable live video output * after snapshot sequence" */ { 0x0c, 0x08 }, /* * 0D COME "Common Control E" * = 161 (0xA1) 10100001 * COME[7] "Output average option" * = 1 (0x01) 1....... "Output average of 4 pixels" * COME[6] "Anti-blooming control" * = 0 (0x00) .0...... "Off" * COME[5:3] "Reserved" * = 4 (0x04) ..100... * COME[2] "Clock output power down pin status" * = 0 (0x00) .....0.. "Tri-state data output pin * on power down" * COME[1] "Data output pin status selection at power down" * = 0 (0x00) ......0. "Tri-state VSYNC, PCLK, * HREF, and CHSYNC pins on * power down" * COME[0] "Auto zero circuit select" * = 1 (0x01) .......1 "On" */ { 0x0d, 0xa1 }, /* * 0E COMF "Common Control F" * = 112 (0x70) 01110000 * COMF[7] "System clock selection" * = 0 (0x00) 0....... "Use 24 MHz system clock" * COMF[6:4] "Reserved" * = 7 (0x07) .111.... * COMF[3] "Manual auto negative offset canceling selection" * = 0 (0x00) ....0... "Auto detect negative * offset and cancel it" * COMF[2:0] "Reserved" * = 0 (0x00) .....000 */ { 0x0e, 0x70 }, /* * 0F COMG "Common Control G" * = 66 (0x42) 01000010 * COMG[7] "Optical black output selection" * = 0 (0x00) 0....... "Disable" * COMG[6] "Black level calibrate selection" * = 1 (0x01) .1...... "Use optical black pixels * to calibrate" * COMG[5:4] "Reserved" * = 0 (0x00) ..00.... * COMG[3] "Channel offset adjustment" * = 0 (0x00) ....0... "Disable offset adjustment" * COMG[2] "ADC black level calibration option" * = 0 (0x00) .....0.. "Use B/G line and G/R * line to calibrate each * channel's black level" * COMG[1] "Reserved" * = 1 (0x01) ......1. * COMG[0] "ADC black level calibration enable" * = 0 (0x00) .......0 "Disable" */ { 0x0f, 0x42 }, /* * 14 COMJ "Common Control J" * = 198 (0xC6) 11000110 * COMJ[7:6] "AGC gain ceiling" * = 3 (0x03) 11...... "8x" * COMJ[5:4] "Reserved" * = 0 (0x00) ..00.... * COMJ[3] "Auto banding filter" * = 0 (0x00) ....0... "Banding filter is always * on off depending on * COMI[5] setting" * COMJ[2] "VSYNC drop option" * = 1 (0x01) .....1.. "SYNC is dropped if frame * data is dropped" * COMJ[1] "Frame data drop" * = 1 (0x01) ......1. "Drop frame data if * exposure is not within * tolerance. In AEC mode, * data is normally dropped * when data is out of * range." * COMJ[0] "Reserved" * = 0 (0x00) .......0 */ { 0x14, 0xc6 }, /* * 15 COMK "Common Control K" * = 2 (0x02) 00000010 * COMK[7] "CHSYNC pin output swap" * = 0 (0x00) 0....... "CHSYNC" * COMK[6] "HREF pin output swap" * = 0 (0x00) .0...... "HREF" * COMK[5] "PCLK output selection" * = 0 (0x00) ..0..... "PCLK always output" * COMK[4] "PCLK edge selection" * = 0 (0x00) ...0.... "Data valid on falling edge" * COMK[3] "HREF output polarity" * = 0 (0x00) ....0... "positive" * COMK[2] "Reserved" * = 0 (0x00) .....0.. * COMK[1] "VSYNC polarity" * = 1 (0x01) ......1. "negative" * COMK[0] "HSYNC polarity" * = 0 (0x00) .......0 "positive" */ { 0x15, 0x02 }, /* * 33 CHLF "Current Control" * = 9 (0x09) 00001001 * CHLF[7:6] "Sensor current control" * = 0 (0x00) 00...... * CHLF[5] "Sensor current range control" * = 0 (0x00) ..0..... "normal range" * CHLF[4] "Sensor current" * = 0 (0x00) ...0.... "normal current" * CHLF[3] "Sensor buffer current control" * = 1 (0x01) ....1... "half current" * CHLF[2] "Column buffer current control" * = 0 (0x00) .....0.. "normal current" * CHLF[1] "Analog DSP current control" * = 0 (0x00) ......0. "normal current" * CHLF[1] "ADC current control" * = 0 (0x00) ......0. "normal current" */ { 0x33, 0x09 }, /* * 34 VBLM "Blooming Control" * = 80 (0x50) 01010000 * VBLM[7] "Hard soft reset switch" * = 0 (0x00) 0....... "Hard reset" * VBLM[6:4] "Blooming voltage selection" * = 5 (0x05) .101.... * VBLM[3:0] "Sensor current control" * = 0 (0x00) ....0000 */ { 0x34, 0x50 }, /* * 36 VCHG "Sensor Precharge Voltage Control" * = 0 (0x00) 00000000 * VCHG[7] "Reserved" * = 0 (0x00) 0....... * VCHG[6:4] "Sensor precharge voltage control" * = 0 (0x00) .000.... * VCHG[3:0] "Sensor array common reference" * = 0 (0x00) ....0000 */ { 0x36, 0x00 }, /* * 37 ADC "ADC Reference Control" * = 4 (0x04) 00000100 * ADC[7:4] "Reserved" * = 0 (0x00) 0000.... * ADC[3] "ADC input signal range" * = 0 (0x00) ....0... "Input signal 1.0x" * ADC[2:0] "ADC range control" * = 4 (0x04) .....100 */ { 0x37, 0x04 }, /* * 38 ACOM "Analog Common Ground" * = 82 (0x52) 01010010 * ACOM[7] "Analog gain control" * = 0 (0x00) 0....... "Gain 1x" * ACOM[6] "Analog black level calibration" * = 1 (0x01) .1...... "On" * ACOM[5:0] "Reserved" * = 18 (0x12) ..010010 */ { 0x38, 0x52 }, /* * 3A FREFA "Internal Reference Adjustment" * = 0 (0x00) 00000000 * FREFA[7:0] "Range" * = 0 (0x00) 00000000 */ { 0x3a, 0x00 }, /* * 3C FVOPT "Internal Reference Adjustment" * = 31 (0x1F) 00011111 * FVOPT[7:0] "Range" * = 31 (0x1F) 00011111 */ { 0x3c, 0x1f }, /* * 44 Undocumented = 0 (0x00) 00000000 * 44[7:0] "It's a secret" * = 0 (0x00) 00000000 */ { 0x44, 0x00 }, /* * 40 Undocumented = 0 (0x00) 00000000 * 40[7:0] "It's a secret" * = 0 (0x00) 00000000 */ { 0x40, 0x00 }, /* * 41 Undocumented = 0 (0x00) 00000000 * 41[7:0] "It's a secret" * = 0 (0x00) 00000000 */ { 0x41, 0x00 }, /* * 42 Undocumented = 0 (0x00) 00000000 * 42[7:0] "It's a secret" * = 0 (0x00) 00000000 */ { 0x42, 0x00 }, /* * 43 Undocumented = 0 (0x00) 00000000 * 43[7:0] "It's a secret" * = 0 (0x00) 00000000 */ { 0x43, 0x00 }, /* * 45 Undocumented = 128 (0x80) 10000000 * 45[7:0] "It's a secret" * = 128 (0x80) 10000000 */ { 0x45, 0x80 }, /* * 48 Undocumented = 192 (0xC0) 11000000 * 48[7:0] "It's a secret" * = 192 (0xC0) 11000000 */ { 0x48, 0xc0 }, /* * 49 Undocumented = 25 (0x19) 00011001 * 49[7:0] "It's a secret" * = 25 (0x19) 00011001 */ { 0x49, 0x19 }, /* * 4B Undocumented = 128 (0x80) 10000000 * 4B[7:0] "It's a secret" * = 128 (0x80) 10000000 */ { 0x4b, 0x80 }, /* * 4D Undocumented = 196 (0xC4) 11000100 * 4D[7:0] "It's a secret" * = 196 (0xC4) 11000100 */ { 0x4d, 0xc4 }, /* * 35 VREF "Reference Voltage Control" * = 76 (0x4c) 01001100 * VREF[7:5] "Column high reference control" * = 2 (0x02) 010..... "higher voltage" * VREF[4:2] "Column low reference control" * = 3 (0x03) ...011.. "Highest voltage" * VREF[1:0] "Reserved" * = 0 (0x00) ......00 */ { 0x35, 0x4c }, /* * 3D Undocumented = 0 (0x00) 00000000 * 3D[7:0] "It's a secret" * = 0 (0x00) 00000000 */ { 0x3d, 0x00 }, /* * 3E Undocumented = 0 (0x00) 00000000 * 3E[7:0] "It's a secret" * = 0 (0x00) 00000000 */ { 0x3e, 0x00 }, /* * 3B FREFB "Internal Reference Adjustment" * = 24 (0x18) 00011000 * FREFB[7:0] "Range" * = 24 (0x18) 00011000 */ { 0x3b, 0x18 }, /* * 33 CHLF "Current Control" * = 25 (0x19) 00011001 * CHLF[7:6] "Sensor current control" * = 0 (0x00) 00...... * CHLF[5] "Sensor current range control" * = 0 (0x00) ..0..... "normal range" * CHLF[4] "Sensor current" * = 1 (0x01) ...1.... "double current" * CHLF[3] "Sensor buffer current control" * = 1 (0x01) ....1... "half current" * CHLF[2] "Column buffer current control" * = 0 (0x00) .....0.. "normal current" * CHLF[1] "Analog DSP current control" * = 0 (0x00) ......0. "normal current" * CHLF[1] "ADC current control" * = 0 (0x00) ......0. "normal current" */ { 0x33, 0x19 }, /* * 34 VBLM "Blooming Control" * = 90 (0x5A) 01011010 * VBLM[7] "Hard soft reset switch" * = 0 (0x00) 0....... "Hard reset" * VBLM[6:4] "Blooming voltage selection" * = 5 (0x05) .101.... * VBLM[3:0] "Sensor current control" * = 10 (0x0A) ....1010 */ { 0x34, 0x5a }, /* * 3B FREFB "Internal Reference Adjustment" * = 0 (0x00) 00000000 * FREFB[7:0] "Range" * = 0 (0x00) 00000000 */ { 0x3b, 0x00 }, /* * 33 CHLF "Current Control" * = 9 (0x09) 00001001 * CHLF[7:6] "Sensor current control" * = 0 (0x00) 00...... * CHLF[5] "Sensor current range control" * = 0 (0x00) ..0..... "normal range" * CHLF[4] "Sensor current" * = 0 (0x00) ...0.... "normal current" * CHLF[3] "Sensor buffer current control" * = 1 (0x01) ....1... "half current" * CHLF[2] "Column buffer current control" * = 0 (0x00) .....0.. "normal current" * CHLF[1] "Analog DSP current control" * = 0 (0x00) ......0. "normal current" * CHLF[1] "ADC current control" * = 0 (0x00) ......0. "normal current" */ { 0x33, 0x09 }, /* * 34 VBLM "Blooming Control" * = 80 (0x50) 01010000 * VBLM[7] "Hard soft reset switch" * = 0 (0x00) 0....... "Hard reset" * VBLM[6:4] "Blooming voltage selection" * = 5 (0x05) .101.... * VBLM[3:0] "Sensor current control" * = 0 (0x00) ....0000 */ { 0x34, 0x50 }, /* * 12 COMH "Common Control H" * = 64 (0x40) 01000000 * COMH[7] "SRST" * = 0 (0x00) 0....... "No-op" * COMH[6:4] "Resolution selection" * = 4 (0x04) .100.... "XGA" * COMH[3] "Master slave selection" * = 0 (0x00) ....0... "Master mode" * COMH[2] "Internal B/R channel option" * = 0 (0x00) .....0.. "B/R use same channel" * COMH[1] "Color bar test pattern" * = 0 (0x00) ......0. "Off" * COMH[0] "Reserved" * = 0 (0x00) .......0 */ { 0x12, 0x40 }, /* * 17 HREFST "Horizontal window start" * = 31 (0x1F) 00011111 * HREFST[7:0] "Horizontal window start, 8 MSBs" * = 31 (0x1F) 00011111 */ { 0x17, 0x1f }, /* * 18 HREFEND "Horizontal window end" * = 95 (0x5F) 01011111 * HREFEND[7:0] "Horizontal Window End, 8 MSBs" * = 95 (0x5F) 01011111 */ { 0x18, 0x5f }, /* * 19 VSTRT "Vertical window start" * = 0 (0x00) 00000000 * VSTRT[7:0] "Vertical Window Start, 8 MSBs" * = 0 (0x00) 00000000 */ { 0x19, 0x00 }, /* * 1A VEND "Vertical window end" * = 96 (0x60) 01100000 * VEND[7:0] "Vertical Window End, 8 MSBs" * = 96 (0x60) 01100000 */ { 0x1a, 0x60 }, /* * 32 COMM "Common Control M" * = 18 (0x12) 00010010 * COMM[7:6] "Pixel clock divide option" * = 0 (0x00) 00...... "/1" * COMM[5:3] "Horizontal window end position, 3 LSBs" * = 2 (0x02) ..010... * COMM[2:0] "Horizontal window start position, 3 LSBs" * = 2 (0x02) .....010 */ { 0x32, 0x12 }, /* * 03 COMA "Common Control A" * = 74 (0x4A) 01001010 * COMA[7:4] "AWB Update Threshold" * = 4 (0x04) 0100.... * COMA[3:2] "Vertical window end line control 2 LSBs" * = 2 (0x02) ....10.. * COMA[1:0] "Vertical window start line control 2 LSBs" * = 2 (0x02) ......10 */ { 0x03, 0x4a }, /* * 11 CLKRC "Clock Rate Control" * = 128 (0x80) 10000000 * CLKRC[7] "Internal frequency doublers on off seclection" * = 1 (0x01) 1....... "On" * CLKRC[6] "Digital video master slave selection" * = 0 (0x00) .0...... "Master mode, sensor * provides PCLK" * CLKRC[5:0] "Clock divider { CLK = PCLK/(1+CLKRC[5:0]) }" * = 0 (0x00) ..000000 */ { 0x11, 0x80 }, /* * 12 COMH "Common Control H" * = 0 (0x00) 00000000 * COMH[7] "SRST" * = 0 (0x00) 0....... "No-op" * COMH[6:4] "Resolution selection" * = 0 (0x00) .000.... "QXGA" * COMH[3] "Master slave selection" * = 0 (0x00) ....0... "Master mode" * COMH[2] "Internal B/R channel option" * = 0 (0x00) .....0.. "B/R use same channel" * COMH[1] "Color bar test pattern" * = 0 (0x00) ......0. "Off" * COMH[0] "Reserved" * = 0 (0x00) .......0 */ { 0x12, 0x00 }, /* * 12 COMH "Common Control H" * = 64 (0x40) 01000000 * COMH[7] "SRST" * = 0 (0x00) 0....... "No-op" * COMH[6:4] "Resolution selection" * = 4 (0x04) .100.... "XGA" * COMH[3] "Master slave selection" * = 0 (0x00) ....0... "Master mode" * COMH[2] "Internal B/R channel option" * = 0 (0x00) .....0.. "B/R use same channel" * COMH[1] "Color bar test pattern" * = 0 (0x00) ......0. "Off" * COMH[0] "Reserved" * = 0 (0x00) .......0 */ { 0x12, 0x40 }, /* * 17 HREFST "Horizontal window start" * = 31 (0x1F) 00011111 * HREFST[7:0] "Horizontal window start, 8 MSBs" * = 31 (0x1F) 00011111 */ { 0x17, 0x1f }, /* * 18 HREFEND "Horizontal window end" * = 95 (0x5F) 01011111 * HREFEND[7:0] "Horizontal Window End, 8 MSBs" * = 95 (0x5F) 01011111 */ { 0x18, 0x5f }, /* * 19 VSTRT "Vertical window start" * = 0 (0x00) 00000000 * VSTRT[7:0] "Vertical Window Start, 8 MSBs" * = 0 (0x00) 00000000 */ { 0x19, 0x00 }, /* * 1A VEND "Vertical window end" * = 96 (0x60) 01100000 * VEND[7:0] "Vertical Window End, 8 MSBs" * = 96 (0x60) 01100000 */ { 0x1a, 0x60 }, /* * 32 COMM "Common Control M" * = 18 (0x12) 00010010 * COMM[7:6] "Pixel clock divide option" * = 0 (0x00) 00...... "/1" * COMM[5:3] "Horizontal window end position, 3 LSBs" * = 2 (0x02) ..010... * COMM[2:0] "Horizontal window start position, 3 LSBs" * = 2 (0x02) .....010 */ { 0x32, 0x12 }, /* * 03 COMA "Common Control A" * = 74 (0x4A) 01001010 * COMA[7:4] "AWB Update Threshold" * = 4 (0x04) 0100.... * COMA[3:2] "Vertical window end line control 2 LSBs" * = 2 (0x02) ....10.. * COMA[1:0] "Vertical window start line control 2 LSBs" * = 2 (0x02) ......10 */ { 0x03, 0x4a }, /* * 02 RED "Red Gain Control" * = 175 (0xAF) 10101111 * RED[7] "Action" * = 1 (0x01) 1....... "gain = 1/(1+bitrev([6:0]))" * RED[6:0] "Value" * = 47 (0x2F) .0101111 */ { 0x02, 0xaf }, /* * 2D ADDVSL "VSYNC Pulse Width" * = 210 (0xD2) 11010010 * ADDVSL[7:0] "VSYNC pulse width, LSB" * = 210 (0xD2) 11010010 */ { 0x2d, 0xd2 }, /* * 00 GAIN = 24 (0x18) 00011000 * GAIN[7:6] "Reserved" * = 0 (0x00) 00...... * GAIN[5] "Double" * = 0 (0x00) ..0..... "False" * GAIN[4] "Double" * = 1 (0x01) ...1.... "True" * GAIN[3:0] "Range" * = 8 (0x08) ....1000 */ { 0x00, 0x18 }, /* * 01 BLUE "Blue Gain Control" * = 240 (0xF0) 11110000 * BLUE[7] "Action" * = 1 (0x01) 1....... "gain = 1/(1+bitrev([6:0]))" * BLUE[6:0] "Value" * = 112 (0x70) .1110000 */ { 0x01, 0xf0 }, /* * 10 AEC "Automatic Exposure Control" * = 10 (0x0A) 00001010 * AEC[7:0] "Automatic Exposure Control, 8 MSBs" * = 10 (0x0A) 00001010 */ { 0x10, 0x0a }, { 0xe1, 0x67 }, { 0xe3, 0x03 }, { 0xe4, 0x26 }, { 0xe5, 0x3e }, { 0xf8, 0x01 }, { 0xff, 0x01 }, }; static const struct ov_i2c_regvals norm_6x20[] = { { 0x12, 0x80 }, /* reset */ { 0x11, 0x01 }, { 0x03, 0x60 }, { 0x05, 0x7f }, /* For when autoadjust is off */ { 0x07, 0xa8 }, /* The ratio of 0x0c and 0x0d controls the white point */ { 0x0c, 0x24 }, { 0x0d, 0x24 }, { 0x0f, 0x15 }, /* COMS */ { 0x10, 0x75 }, /* AEC Exposure time */ { 0x12, 0x24 }, /* Enable AGC */ { 0x14, 0x04 }, /* 0x16: 0x06 helps frame stability with moving objects */ { 0x16, 0x06 }, /* { 0x20, 0x30 }, * Aperture correction enable */ { 0x26, 0xb2 }, /* BLC enable */ /* 0x28: 0x05 Selects RGB format if RGB on */ { 0x28, 0x05 }, { 0x2a, 0x04 }, /* Disable framerate adjust */ /* { 0x2b, 0xac }, * Framerate; Set 2a[7] first */ { 0x2d, 0x85 }, { 0x33, 0xa0 }, /* Color Processing Parameter */ { 0x34, 0xd2 }, /* Max A/D range */ { 0x38, 0x8b }, { 0x39, 0x40 }, { 0x3c, 0x39 }, /* Enable AEC mode changing */ { 0x3c, 0x3c }, /* Change AEC mode */ { 0x3c, 0x24 }, /* Disable AEC mode changing */ { 0x3d, 0x80 }, /* These next two registers (0x4a, 0x4b) are undocumented. * They control the color balance */ { 0x4a, 0x80 }, { 0x4b, 0x80 }, { 0x4d, 0xd2 }, /* This reduces noise a bit */ { 0x4e, 0xc1 }, { 0x4f, 0x04 }, /* Do 50-53 have any effect? */ /* Toggle 0x12[2] off and on here? */ }; static const struct ov_i2c_regvals norm_6x30[] = { { 0x12, 0x80 }, /* Reset */ { 0x00, 0x1f }, /* Gain */ { 0x01, 0x99 }, /* Blue gain */ { 0x02, 0x7c }, /* Red gain */ { 0x03, 0xc0 }, /* Saturation */ { 0x05, 0x0a }, /* Contrast */ { 0x06, 0x95 }, /* Brightness */ { 0x07, 0x2d }, /* Sharpness */ { 0x0c, 0x20 }, { 0x0d, 0x20 }, { 0x0e, 0xa0 }, /* Was 0x20, bit7 enables a 2x gain which we need */ { 0x0f, 0x05 }, { 0x10, 0x9a }, { 0x11, 0x00 }, /* Pixel clock = fastest */ { 0x12, 0x24 }, /* Enable AGC and AWB */ { 0x13, 0x21 }, { 0x14, 0x80 }, { 0x15, 0x01 }, { 0x16, 0x03 }, { 0x17, 0x38 }, { 0x18, 0xea }, { 0x19, 0x04 }, { 0x1a, 0x93 }, { 0x1b, 0x00 }, { 0x1e, 0xc4 }, { 0x1f, 0x04 }, { 0x20, 0x20 }, { 0x21, 0x10 }, { 0x22, 0x88 }, { 0x23, 0xc0 }, /* Crystal circuit power level */ { 0x25, 0x9a }, /* Increase AEC black ratio */ { 0x26, 0xb2 }, /* BLC enable */ { 0x27, 0xa2 }, { 0x28, 0x00 }, { 0x29, 0x00 }, { 0x2a, 0x84 }, /* 60 Hz power */ { 0x2b, 0xa8 }, /* 60 Hz power */ { 0x2c, 0xa0 }, { 0x2d, 0x95 }, /* Enable auto-brightness */ { 0x2e, 0x88 }, { 0x33, 0x26 }, { 0x34, 0x03 }, { 0x36, 0x8f }, { 0x37, 0x80 }, { 0x38, 0x83 }, { 0x39, 0x80 }, { 0x3a, 0x0f }, { 0x3b, 0x3c }, { 0x3c, 0x1a }, { 0x3d, 0x80 }, { 0x3e, 0x80 }, { 0x3f, 0x0e }, { 0x40, 0x00 }, /* White bal */ { 0x41, 0x00 }, /* White bal */ { 0x42, 0x80 }, { 0x43, 0x3f }, /* White bal */ { 0x44, 0x80 }, { 0x45, 0x20 }, { 0x46, 0x20 }, { 0x47, 0x80 }, { 0x48, 0x7f }, { 0x49, 0x00 }, { 0x4a, 0x00 }, { 0x4b, 0x80 }, { 0x4c, 0xd0 }, { 0x4d, 0x10 }, /* U = 0.563u, V = 0.714v */ { 0x4e, 0x40 }, { 0x4f, 0x07 }, /* UV avg., col. killer: max */ { 0x50, 0xff }, { 0x54, 0x23 }, /* Max AGC gain: 18dB */ { 0x55, 0xff }, { 0x56, 0x12 }, { 0x57, 0x81 }, { 0x58, 0x75 }, { 0x59, 0x01 }, /* AGC dark current comp.: +1 */ { 0x5a, 0x2c }, { 0x5b, 0x0f }, /* AWB chrominance levels */ { 0x5c, 0x10 }, { 0x3d, 0x80 }, { 0x27, 0xa6 }, { 0x12, 0x20 }, /* Toggle AWB */ { 0x12, 0x24 }, }; /* Lawrence Glaister <lg@jfm.bc.ca> reports: * * Register 0x0f in the 7610 has the following effects: * * 0x85 (AEC method 1): Best overall, good contrast range * 0x45 (AEC method 2): Very overexposed * 0xa5 (spec sheet default): Ok, but the black level is * shifted resulting in loss of contrast * 0x05 (old driver setting): very overexposed, too much * contrast */ static const struct ov_i2c_regvals norm_7610[] = { { 0x10, 0xff }, { 0x16, 0x06 }, { 0x28, 0x24 }, { 0x2b, 0xac }, { 0x12, 0x00 }, { 0x38, 0x81 }, { 0x28, 0x24 }, /* 0c */ { 0x0f, 0x85 }, /* lg's setting */ { 0x15, 0x01 }, { 0x20, 0x1c }, { 0x23, 0x2a }, { 0x24, 0x10 }, { 0x25, 0x8a }, { 0x26, 0xa2 }, { 0x27, 0xc2 }, { 0x2a, 0x04 }, { 0x2c, 0xfe }, { 0x2d, 0x93 }, { 0x30, 0x71 }, { 0x31, 0x60 }, { 0x32, 0x26 }, { 0x33, 0x20 }, { 0x34, 0x48 }, { 0x12, 0x24 }, { 0x11, 0x01 }, { 0x0c, 0x24 }, { 0x0d, 0x24 }, }; static const struct ov_i2c_regvals norm_7620[] = { { 0x12, 0x80 }, /* reset */ { 0x00, 0x00 }, /* gain */ { 0x01, 0x80 }, /* blue gain */ { 0x02, 0x80 }, /* red gain */ { 0x03, 0xc0 }, /* OV7670_R03_VREF */ { 0x06, 0x60 }, { 0x07, 0x00 }, { 0x0c, 0x24 }, { 0x0c, 0x24 }, { 0x0d, 0x24 }, { 0x11, 0x01 }, { 0x12, 0x24 }, { 0x13, 0x01 }, { 0x14, 0x84 }, { 0x15, 0x01 }, { 0x16, 0x03 }, { 0x17, 0x2f }, { 0x18, 0xcf }, { 0x19, 0x06 }, { 0x1a, 0xf5 }, { 0x1b, 0x00 }, { 0x20, 0x18 }, { 0x21, 0x80 }, { 0x22, 0x80 }, { 0x23, 0x00 }, { 0x26, 0xa2 }, { 0x27, 0xea }, { 0x28, 0x22 }, /* Was 0x20, bit1 enables a 2x gain which we need */ { 0x29, 0x00 }, { 0x2a, 0x10 }, { 0x2b, 0x00 }, { 0x2c, 0x88 }, { 0x2d, 0x91 }, { 0x2e, 0x80 }, { 0x2f, 0x44 }, { 0x60, 0x27 }, { 0x61, 0x02 }, { 0x62, 0x5f }, { 0x63, 0xd5 }, { 0x64, 0x57 }, { 0x65, 0x83 }, { 0x66, 0x55 }, { 0x67, 0x92 }, { 0x68, 0xcf }, { 0x69, 0x76 }, { 0x6a, 0x22 }, { 0x6b, 0x00 }, { 0x6c, 0x02 }, { 0x6d, 0x44 }, { 0x6e, 0x80 }, { 0x6f, 0x1d }, { 0x70, 0x8b }, { 0x71, 0x00 }, { 0x72, 0x14 }, { 0x73, 0x54 }, { 0x74, 0x00 }, { 0x75, 0x8e }, { 0x76, 0x00 }, { 0x77, 0xff }, { 0x78, 0x80 }, { 0x79, 0x80 }, { 0x7a, 0x80 }, { 0x7b, 0xe2 }, { 0x7c, 0x00 }, }; /* 7640 and 7648. The defaults should be OK for most registers. */ static const struct ov_i2c_regvals norm_7640[] = { { 0x12, 0x80 }, { 0x12, 0x14 }, }; static const struct ov_regvals init_519_ov7660[] = { { 0x5d, 0x03 }, /* Turn off suspend mode */ { 0x53, 0x9b }, /* 0x9f enables the (unused) microcontroller */ { 0x54, 0x0f }, /* bit2 (jpeg enable) */ { 0xa2, 0x20 }, /* a2-a5 are undocumented */ { 0xa3, 0x18 }, { 0xa4, 0x04 }, { 0xa5, 0x28 }, { 0x37, 0x00 }, /* SetUsbInit */ { 0x55, 0x02 }, /* 4.096 Mhz audio clock */ /* Enable both fields, YUV Input, disable defect comp (why?) */ { 0x20, 0x0c }, /* 0x0d does U <-> V swap */ { 0x21, 0x38 }, { 0x22, 0x1d }, { 0x17, 0x50 }, /* undocumented */ { 0x37, 0x00 }, /* undocumented */ { 0x40, 0xff }, /* I2C timeout counter */ { 0x46, 0x00 }, /* I2C clock prescaler */ }; static const struct ov_i2c_regvals norm_7660[] = { {OV7670_R12_COM7, OV7670_COM7_RESET}, {OV7670_R11_CLKRC, 0x81}, {0x92, 0x00}, /* DM_LNL */ {0x93, 0x00}, /* DM_LNH */ {0x9d, 0x4c}, /* BD50ST */ {0x9e, 0x3f}, /* BD60ST */ {OV7670_R3B_COM11, 0x02}, {OV7670_R13_COM8, 0xf5}, {OV7670_R10_AECH, 0x00}, {OV7670_R00_GAIN, 0x00}, {OV7670_R01_BLUE, 0x7c}, {OV7670_R02_RED, 0x9d}, {OV7670_R12_COM7, 0x00}, {OV7670_R04_COM1, 00}, {OV7670_R18_HSTOP, 0x01}, {OV7670_R17_HSTART, 0x13}, {OV7670_R32_HREF, 0x92}, {OV7670_R19_VSTART, 0x02}, {OV7670_R1A_VSTOP, 0x7a}, {OV7670_R03_VREF, 0x00}, {OV7670_R0E_COM5, 0x04}, {OV7670_R0F_COM6, 0x62}, {OV7670_R15_COM10, 0x00}, {0x16, 0x02}, /* RSVD */ {0x1b, 0x00}, /* PSHFT */ {OV7670_R1E_MVFP, 0x01}, {0x29, 0x3c}, /* RSVD */ {0x33, 0x00}, /* CHLF */ {0x34, 0x07}, /* ARBLM */ {0x35, 0x84}, /* RSVD */ {0x36, 0x00}, /* RSVD */ {0x37, 0x04}, /* ADC */ {0x39, 0x43}, /* OFON */ {OV7670_R3A_TSLB, 0x00}, {OV7670_R3C_COM12, 0x6c}, {OV7670_R3D_COM13, 0x98}, {OV7670_R3F_EDGE, 0x23}, {OV7670_R40_COM15, 0xc1}, {OV7670_R41_COM16, 0x22}, {0x6b, 0x0a}, /* DBLV */ {0xa1, 0x08}, /* RSVD */ {0x69, 0x80}, /* HV */ {0x43, 0xf0}, /* RSVD.. */ {0x44, 0x10}, {0x45, 0x78}, {0x46, 0xa8}, {0x47, 0x60}, {0x48, 0x80}, {0x59, 0xba}, {0x5a, 0x9a}, {0x5b, 0x22}, {0x5c, 0xb9}, {0x5d, 0x9b}, {0x5e, 0x10}, {0x5f, 0xe0}, {0x60, 0x85}, {0x61, 0x60}, {0x9f, 0x9d}, /* RSVD */ {0xa0, 0xa0}, /* DSPC2 */ {0x4f, 0x60}, /* matrix */ {0x50, 0x64}, {0x51, 0x04}, {0x52, 0x18}, {0x53, 0x3c}, {0x54, 0x54}, {0x55, 0x40}, {0x56, 0x40}, {0x57, 0x40}, {0x58, 0x0d}, /* matrix sign */ {0x8b, 0xcc}, /* RSVD */ {0x8c, 0xcc}, {0x8d, 0xcf}, {0x6c, 0x40}, /* gamma curve */ {0x6d, 0xe0}, {0x6e, 0xa0}, {0x6f, 0x80}, {0x70, 0x70}, {0x71, 0x80}, {0x72, 0x60}, {0x73, 0x60}, {0x74, 0x50}, {0x75, 0x40}, {0x76, 0x38}, {0x77, 0x3c}, {0x78, 0x32}, {0x79, 0x1a}, {0x7a, 0x28}, {0x7b, 0x24}, {0x7c, 0x04}, /* gamma curve */ {0x7d, 0x12}, {0x7e, 0x26}, {0x7f, 0x46}, {0x80, 0x54}, {0x81, 0x64}, {0x82, 0x70}, {0x83, 0x7c}, {0x84, 0x86}, {0x85, 0x8e}, {0x86, 0x9c}, {0x87, 0xab}, {0x88, 0xc4}, {0x89, 0xd1}, {0x8a, 0xe5}, {OV7670_R14_COM9, 0x1e}, {OV7670_R24_AEW, 0x80}, {OV7670_R25_AEB, 0x72}, {OV7670_R26_VPT, 0xb3}, {0x62, 0x80}, /* LCC1 */ {0x63, 0x80}, /* LCC2 */ {0x64, 0x06}, /* LCC3 */ {0x65, 0x00}, /* LCC4 */ {0x66, 0x01}, /* LCC5 */ {0x94, 0x0e}, /* RSVD.. */ {0x95, 0x14}, {OV7670_R13_COM8, OV7670_COM8_FASTAEC | OV7670_COM8_AECSTEP | OV7670_COM8_BFILT | 0x10 | OV7670_COM8_AGC | OV7670_COM8_AWB | OV7670_COM8_AEC}, {0xa1, 0xc8} }; static const struct ov_i2c_regvals norm_9600[] = { {0x12, 0x80}, {0x0c, 0x28}, {0x11, 0x80}, {0x13, 0xb5}, {0x14, 0x3e}, {0x1b, 0x04}, {0x24, 0xb0}, {0x25, 0x90}, {0x26, 0x94}, {0x35, 0x90}, {0x37, 0x07}, {0x38, 0x08}, {0x01, 0x8e}, {0x02, 0x85} }; /* 7670. Defaults taken from OmniVision provided data, * as provided by Jonathan Corbet of OLPC */ static const struct ov_i2c_regvals norm_7670[] = { { OV7670_R12_COM7, OV7670_COM7_RESET }, { OV7670_R3A_TSLB, 0x04 }, /* OV */ { OV7670_R12_COM7, OV7670_COM7_FMT_VGA }, /* VGA */ { OV7670_R11_CLKRC, 0x01 }, /* * Set the hardware window. These values from OV don't entirely * make sense - hstop is less than hstart. But they work... */ { OV7670_R17_HSTART, 0x13 }, { OV7670_R18_HSTOP, 0x01 }, { OV7670_R32_HREF, 0xb6 }, { OV7670_R19_VSTART, 0x02 }, { OV7670_R1A_VSTOP, 0x7a }, { OV7670_R03_VREF, 0x0a }, { OV7670_R0C_COM3, 0x00 }, { OV7670_R3E_COM14, 0x00 }, /* Mystery scaling numbers */ { 0x70, 0x3a }, { 0x71, 0x35 }, { 0x72, 0x11 }, { 0x73, 0xf0 }, { 0xa2, 0x02 }, /* { OV7670_R15_COM10, 0x0 }, */ /* Gamma curve values */ { 0x7a, 0x20 }, { 0x7b, 0x10 }, { 0x7c, 0x1e }, { 0x7d, 0x35 }, { 0x7e, 0x5a }, { 0x7f, 0x69 }, { 0x80, 0x76 }, { 0x81, 0x80 }, { 0x82, 0x88 }, { 0x83, 0x8f }, { 0x84, 0x96 }, { 0x85, 0xa3 }, { 0x86, 0xaf }, { 0x87, 0xc4 }, { 0x88, 0xd7 }, { 0x89, 0xe8 }, /* AGC and AEC parameters. Note we start by disabling those features, then turn them only after tweaking the values. */ { OV7670_R13_COM8, OV7670_COM8_FASTAEC | OV7670_COM8_AECSTEP | OV7670_COM8_BFILT }, { OV7670_R00_GAIN, 0x00 }, { OV7670_R10_AECH, 0x00 }, { OV7670_R0D_COM4, 0x40 }, /* magic reserved bit */ { OV7670_R14_COM9, 0x18 }, /* 4x gain + magic rsvd bit */ { OV7670_RA5_BD50MAX, 0x05 }, { OV7670_RAB_BD60MAX, 0x07 }, { OV7670_R24_AEW, 0x95 }, { OV7670_R25_AEB, 0x33 }, { OV7670_R26_VPT, 0xe3 }, { OV7670_R9F_HAECC1, 0x78 }, { OV7670_RA0_HAECC2, 0x68 }, { 0xa1, 0x03 }, /* magic */ { OV7670_RA6_HAECC3, 0xd8 }, { OV7670_RA7_HAECC4, 0xd8 }, { OV7670_RA8_HAECC5, 0xf0 }, { OV7670_RA9_HAECC6, 0x90 }, { OV7670_RAA_HAECC7, 0x94 }, { OV7670_R13_COM8, OV7670_COM8_FASTAEC | OV7670_COM8_AECSTEP | OV7670_COM8_BFILT | OV7670_COM8_AGC | OV7670_COM8_AEC }, /* Almost all of these are magic "reserved" values. */ { OV7670_R0E_COM5, 0x61 }, { OV7670_R0F_COM6, 0x4b }, { 0x16, 0x02 }, { OV7670_R1E_MVFP, 0x07 }, { 0x21, 0x02 }, { 0x22, 0x91 }, { 0x29, 0x07 }, { 0x33, 0x0b }, { 0x35, 0x0b }, { 0x37, 0x1d }, { 0x38, 0x71 }, { 0x39, 0x2a }, { OV7670_R3C_COM12, 0x78 }, { 0x4d, 0x40 }, { 0x4e, 0x20 }, { OV7670_R69_GFIX, 0x00 }, { 0x6b, 0x4a }, { 0x74, 0x10 }, { 0x8d, 0x4f }, { 0x8e, 0x00 }, { 0x8f, 0x00 }, { 0x90, 0x00 }, { 0x91, 0x00 }, { 0x96, 0x00 }, { 0x9a, 0x00 }, { 0xb0, 0x84 }, { 0xb1, 0x0c }, { 0xb2, 0x0e }, { 0xb3, 0x82 }, { 0xb8, 0x0a }, /* More reserved magic, some of which tweaks white balance */ { 0x43, 0x0a }, { 0x44, 0xf0 }, { 0x45, 0x34 }, { 0x46, 0x58 }, { 0x47, 0x28 }, { 0x48, 0x3a }, { 0x59, 0x88 }, { 0x5a, 0x88 }, { 0x5b, 0x44 }, { 0x5c, 0x67 }, { 0x5d, 0x49 }, { 0x5e, 0x0e }, { 0x6c, 0x0a }, { 0x6d, 0x55 }, { 0x6e, 0x11 }, { 0x6f, 0x9f }, /* "9e for advance AWB" */ { 0x6a, 0x40 }, { OV7670_R01_BLUE, 0x40 }, { OV7670_R02_RED, 0x60 }, { OV7670_R13_COM8, OV7670_COM8_FASTAEC | OV7670_COM8_AECSTEP | OV7670_COM8_BFILT | OV7670_COM8_AGC | OV7670_COM8_AEC | OV7670_COM8_AWB }, /* Matrix coefficients */ { 0x4f, 0x80 }, { 0x50, 0x80 }, { 0x51, 0x00 }, { 0x52, 0x22 }, { 0x53, 0x5e }, { 0x54, 0x80 }, { 0x58, 0x9e }, { OV7670_R41_COM16, OV7670_COM16_AWBGAIN }, { OV7670_R3F_EDGE, 0x00 }, { 0x75, 0x05 }, { 0x76, 0xe1 }, { 0x4c, 0x00 }, { 0x77, 0x01 }, { OV7670_R3D_COM13, OV7670_COM13_GAMMA | OV7670_COM13_UVSAT | 2}, /* was 3 */ { 0x4b, 0x09 }, { 0xc9, 0x60 }, { OV7670_R41_COM16, 0x38 }, { 0x56, 0x40 }, { 0x34, 0x11 }, { OV7670_R3B_COM11, OV7670_COM11_EXP|OV7670_COM11_HZAUTO }, { 0xa4, 0x88 }, { 0x96, 0x00 }, { 0x97, 0x30 }, { 0x98, 0x20 }, { 0x99, 0x30 }, { 0x9a, 0x84 }, { 0x9b, 0x29 }, { 0x9c, 0x03 }, { 0x9d, 0x4c }, { 0x9e, 0x3f }, { 0x78, 0x04 }, /* Extra-weird stuff. Some sort of multiplexor register */ { 0x79, 0x01 }, { 0xc8, 0xf0 }, { 0x79, 0x0f }, { 0xc8, 0x00 }, { 0x79, 0x10 }, { 0xc8, 0x7e }, { 0x79, 0x0a }, { 0xc8, 0x80 }, { 0x79, 0x0b }, { 0xc8, 0x01 }, { 0x79, 0x0c }, { 0xc8, 0x0f }, { 0x79, 0x0d }, { 0xc8, 0x20 }, { 0x79, 0x09 }, { 0xc8, 0x80 }, { 0x79, 0x02 }, { 0xc8, 0xc0 }, { 0x79, 0x03 }, { 0xc8, 0x40 }, { 0x79, 0x05 }, { 0xc8, 0x30 }, { 0x79, 0x26 }, }; static const struct ov_i2c_regvals norm_8610[] = { { 0x12, 0x80 }, { 0x00, 0x00 }, { 0x01, 0x80 }, { 0x02, 0x80 }, { 0x03, 0xc0 }, { 0x04, 0x30 }, { 0x05, 0x30 }, /* was 0x10, new from windrv 090403 */ { 0x06, 0x70 }, /* was 0x80, new from windrv 090403 */ { 0x0a, 0x86 }, { 0x0b, 0xb0 }, { 0x0c, 0x20 }, { 0x0d, 0x20 }, { 0x11, 0x01 }, { 0x12, 0x25 }, { 0x13, 0x01 }, { 0x14, 0x04 }, { 0x15, 0x01 }, /* Lin and Win think different about UV order */ { 0x16, 0x03 }, { 0x17, 0x38 }, /* was 0x2f, new from windrv 090403 */ { 0x18, 0xea }, /* was 0xcf, new from windrv 090403 */ { 0x19, 0x02 }, /* was 0x06, new from windrv 090403 */ { 0x1a, 0xf5 }, { 0x1b, 0x00 }, { 0x20, 0xd0 }, /* was 0x90, new from windrv 090403 */ { 0x23, 0xc0 }, /* was 0x00, new from windrv 090403 */ { 0x24, 0x30 }, /* was 0x1d, new from windrv 090403 */ { 0x25, 0x50 }, /* was 0x57, new from windrv 090403 */ { 0x26, 0xa2 }, { 0x27, 0xea }, { 0x28, 0x00 }, { 0x29, 0x00 }, { 0x2a, 0x80 }, { 0x2b, 0xc8 }, /* was 0xcc, new from windrv 090403 */ { 0x2c, 0xac }, { 0x2d, 0x45 }, /* was 0xd5, new from windrv 090403 */ { 0x2e, 0x80 }, { 0x2f, 0x14 }, /* was 0x01, new from windrv 090403 */ { 0x4c, 0x00 }, { 0x4d, 0x30 }, /* was 0x10, new from windrv 090403 */ { 0x60, 0x02 }, /* was 0x01, new from windrv 090403 */ { 0x61, 0x00 }, /* was 0x09, new from windrv 090403 */ { 0x62, 0x5f }, /* was 0xd7, new from windrv 090403 */ { 0x63, 0xff }, { 0x64, 0x53 }, /* new windrv 090403 says 0x57, * maybe that's wrong */ { 0x65, 0x00 }, { 0x66, 0x55 }, { 0x67, 0xb0 }, { 0x68, 0xc0 }, /* was 0xaf, new from windrv 090403 */ { 0x69, 0x02 }, { 0x6a, 0x22 }, { 0x6b, 0x00 }, { 0x6c, 0x99 }, /* was 0x80, old windrv says 0x00, but * deleting bit7 colors the first images red */ { 0x6d, 0x11 }, /* was 0x00, new from windrv 090403 */ { 0x6e, 0x11 }, /* was 0x00, new from windrv 090403 */ { 0x6f, 0x01 }, { 0x70, 0x8b }, { 0x71, 0x00 }, { 0x72, 0x14 }, { 0x73, 0x54 }, { 0x74, 0x00 },/* 0x60? - was 0x00, new from windrv 090403 */ { 0x75, 0x0e }, { 0x76, 0x02 }, /* was 0x02, new from windrv 090403 */ { 0x77, 0xff }, { 0x78, 0x80 }, { 0x79, 0x80 }, { 0x7a, 0x80 }, { 0x7b, 0x10 }, /* was 0x13, new from windrv 090403 */ { 0x7c, 0x00 }, { 0x7d, 0x08 }, /* was 0x09, new from windrv 090403 */ { 0x7e, 0x08 }, /* was 0xc0, new from windrv 090403 */ { 0x7f, 0xfb }, { 0x80, 0x28 }, { 0x81, 0x00 }, { 0x82, 0x23 }, { 0x83, 0x0b }, { 0x84, 0x00 }, { 0x85, 0x62 }, /* was 0x61, new from windrv 090403 */ { 0x86, 0xc9 }, { 0x87, 0x00 }, { 0x88, 0x00 }, { 0x89, 0x01 }, { 0x12, 0x20 }, { 0x12, 0x25 }, /* was 0x24, new from windrv 090403 */ }; static unsigned char ov7670_abs_to_sm(unsigned char v) { if (v > 127) return v & 0x7f; return (128 - v) | 0x80; } /* Write a OV519 register */ static void reg_w(struct sd *sd, u16 index, u16 value) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int ret, req = 0; if (sd->gspca_dev.usb_err < 0) return; /* Avoid things going to fast for the bridge with a xhci host */ udelay(150); switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: req = 2; break; case BRIDGE_OVFX2: req = 0x0a; fallthrough; case BRIDGE_W9968CF: gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x\n", req, value, index); ret = usb_control_msg(sd->gspca_dev.dev, usb_sndctrlpipe(sd->gspca_dev.dev, 0), req, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); goto leave; default: req = 1; } gspca_dbg(gspca_dev, D_USBO, "SET %02x 0000 %04x %02x\n", req, index, value); sd->gspca_dev.usb_buf[0] = value; ret = usb_control_msg(sd->gspca_dev.dev, usb_sndctrlpipe(sd->gspca_dev.dev, 0), req, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, sd->gspca_dev.usb_buf, 1, 500); leave: if (ret < 0) { gspca_err(gspca_dev, "reg_w %02x failed %d\n", index, ret); sd->gspca_dev.usb_err = ret; return; } } /* Read from a OV519 register, note not valid for the w9968cf!! */ /* returns: negative is error, pos or zero is data */ static int reg_r(struct sd *sd, u16 index) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int ret; int req; if (sd->gspca_dev.usb_err < 0) return -1; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: req = 3; break; case BRIDGE_OVFX2: req = 0x0b; break; default: req = 1; } /* Avoid things going to fast for the bridge with a xhci host */ udelay(150); ret = usb_control_msg(sd->gspca_dev.dev, usb_rcvctrlpipe(sd->gspca_dev.dev, 0), req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, sd->gspca_dev.usb_buf, 1, 500); if (ret >= 0) { ret = sd->gspca_dev.usb_buf[0]; gspca_dbg(gspca_dev, D_USBI, "GET %02x 0000 %04x %02x\n", req, index, ret); } else { gspca_err(gspca_dev, "reg_r %02x failed %d\n", index, ret); sd->gspca_dev.usb_err = ret; /* * Make sure the result is zeroed to avoid uninitialized * values. */ gspca_dev->usb_buf[0] = 0; } return ret; } /* Read 8 values from a OV519 register */ static int reg_r8(struct sd *sd, u16 index) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int ret; if (sd->gspca_dev.usb_err < 0) return -1; /* Avoid things going to fast for the bridge with a xhci host */ udelay(150); ret = usb_control_msg(sd->gspca_dev.dev, usb_rcvctrlpipe(sd->gspca_dev.dev, 0), 1, /* REQ_IO */ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, sd->gspca_dev.usb_buf, 8, 500); if (ret >= 0) { ret = sd->gspca_dev.usb_buf[0]; } else { gspca_err(gspca_dev, "reg_r8 %02x failed %d\n", index, ret); sd->gspca_dev.usb_err = ret; /* * Make sure the buffer is zeroed to avoid uninitialized * values. */ memset(gspca_dev->usb_buf, 0, 8); } return ret; } /* * Writes bits at positions specified by mask to an OV51x reg. Bits that are in * the same position as 1's in "mask" are cleared and set to "value". Bits * that are in the same position as 0's in "mask" are preserved, regardless * of their respective state in "value". */ static void reg_w_mask(struct sd *sd, u16 index, u8 value, u8 mask) { int ret; u8 oldval; if (mask != 0xff) { value &= mask; /* Enforce mask on value */ ret = reg_r(sd, index); if (ret < 0) return; oldval = ret & ~mask; /* Clear the masked bits */ value |= oldval; /* Set the desired bits */ } reg_w(sd, index, value); } /* * Writes multiple (n) byte value to a single register. Only valid with certain * registers (0x30 and 0xc4 - 0xce). */ static void ov518_reg_w32(struct sd *sd, u16 index, u32 value, int n) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int ret; if (sd->gspca_dev.usb_err < 0) return; *((__le32 *) sd->gspca_dev.usb_buf) = __cpu_to_le32(value); /* Avoid things going to fast for the bridge with a xhci host */ udelay(150); ret = usb_control_msg(sd->gspca_dev.dev, usb_sndctrlpipe(sd->gspca_dev.dev, 0), 1 /* REG_IO */, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, sd->gspca_dev.usb_buf, n, 500); if (ret < 0) { gspca_err(gspca_dev, "reg_w32 %02x failed %d\n", index, ret); sd->gspca_dev.usb_err = ret; } } static void ov511_i2c_w(struct sd *sd, u8 reg, u8 value) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int rc, retries; gspca_dbg(gspca_dev, D_USBO, "ov511_i2c_w %02x %02x\n", reg, value); /* Three byte write cycle */ for (retries = 6; ; ) { /* Select camera register */ reg_w(sd, R51x_I2C_SADDR_3, reg); /* Write "value" to I2C data port of OV511 */ reg_w(sd, R51x_I2C_DATA, value); /* Initiate 3-byte write cycle */ reg_w(sd, R511_I2C_CTL, 0x01); do { rc = reg_r(sd, R511_I2C_CTL); } while (rc > 0 && ((rc & 1) == 0)); /* Retry until idle */ if (rc < 0) return; if ((rc & 2) == 0) /* Ack? */ break; if (--retries < 0) { gspca_dbg(gspca_dev, D_USBO, "i2c write retries exhausted\n"); return; } } } static int ov511_i2c_r(struct sd *sd, u8 reg) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int rc, value, retries; /* Two byte write cycle */ for (retries = 6; ; ) { /* Select camera register */ reg_w(sd, R51x_I2C_SADDR_2, reg); /* Initiate 2-byte write cycle */ reg_w(sd, R511_I2C_CTL, 0x03); do { rc = reg_r(sd, R511_I2C_CTL); } while (rc > 0 && ((rc & 1) == 0)); /* Retry until idle */ if (rc < 0) return rc; if ((rc & 2) == 0) /* Ack? */ break; /* I2C abort */ reg_w(sd, R511_I2C_CTL, 0x10); if (--retries < 0) { gspca_dbg(gspca_dev, D_USBI, "i2c write retries exhausted\n"); return -1; } } /* Two byte read cycle */ for (retries = 6; ; ) { /* Initiate 2-byte read cycle */ reg_w(sd, R511_I2C_CTL, 0x05); do { rc = reg_r(sd, R511_I2C_CTL); } while (rc > 0 && ((rc & 1) == 0)); /* Retry until idle */ if (rc < 0) return rc; if ((rc & 2) == 0) /* Ack? */ break; /* I2C abort */ reg_w(sd, R511_I2C_CTL, 0x10); if (--retries < 0) { gspca_dbg(gspca_dev, D_USBI, "i2c read retries exhausted\n"); return -1; } } value = reg_r(sd, R51x_I2C_DATA); gspca_dbg(gspca_dev, D_USBI, "ov511_i2c_r %02x %02x\n", reg, value); /* This is needed to make i2c_w() work */ reg_w(sd, R511_I2C_CTL, 0x05); return value; } /* * The OV518 I2C I/O procedure is different, hence, this function. * This is normally only called from i2c_w(). Note that this function * always succeeds regardless of whether the sensor is present and working. */ static void ov518_i2c_w(struct sd *sd, u8 reg, u8 value) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; gspca_dbg(gspca_dev, D_USBO, "ov518_i2c_w %02x %02x\n", reg, value); /* Select camera register */ reg_w(sd, R51x_I2C_SADDR_3, reg); /* Write "value" to I2C data port of OV511 */ reg_w(sd, R51x_I2C_DATA, value); /* Initiate 3-byte write cycle */ reg_w(sd, R518_I2C_CTL, 0x01); /* wait for write complete */ msleep(4); reg_r8(sd, R518_I2C_CTL); } /* * returns: negative is error, pos or zero is data * * The OV518 I2C I/O procedure is different, hence, this function. * This is normally only called from i2c_r(). Note that this function * always succeeds regardless of whether the sensor is present and working. */ static int ov518_i2c_r(struct sd *sd, u8 reg) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int value; /* Select camera register */ reg_w(sd, R51x_I2C_SADDR_2, reg); /* Initiate 2-byte write cycle */ reg_w(sd, R518_I2C_CTL, 0x03); reg_r8(sd, R518_I2C_CTL); /* Initiate 2-byte read cycle */ reg_w(sd, R518_I2C_CTL, 0x05); reg_r8(sd, R518_I2C_CTL); value = reg_r(sd, R51x_I2C_DATA); gspca_dbg(gspca_dev, D_USBI, "ov518_i2c_r %02x %02x\n", reg, value); return value; } static void ovfx2_i2c_w(struct sd *sd, u8 reg, u8 value) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int ret; if (sd->gspca_dev.usb_err < 0) return; ret = usb_control_msg(sd->gspca_dev.dev, usb_sndctrlpipe(sd->gspca_dev.dev, 0), 0x02, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, (u16) value, (u16) reg, NULL, 0, 500); if (ret < 0) { gspca_err(gspca_dev, "ovfx2_i2c_w %02x failed %d\n", reg, ret); sd->gspca_dev.usb_err = ret; } gspca_dbg(gspca_dev, D_USBO, "ovfx2_i2c_w %02x %02x\n", reg, value); } static int ovfx2_i2c_r(struct sd *sd, u8 reg) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int ret; if (sd->gspca_dev.usb_err < 0) return -1; ret = usb_control_msg(sd->gspca_dev.dev, usb_rcvctrlpipe(sd->gspca_dev.dev, 0), 0x03, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, (u16) reg, sd->gspca_dev.usb_buf, 1, 500); if (ret >= 0) { ret = sd->gspca_dev.usb_buf[0]; gspca_dbg(gspca_dev, D_USBI, "ovfx2_i2c_r %02x %02x\n", reg, ret); } else { gspca_err(gspca_dev, "ovfx2_i2c_r %02x failed %d\n", reg, ret); sd->gspca_dev.usb_err = ret; } return ret; } static void i2c_w(struct sd *sd, u8 reg, u8 value) { if (sd->sensor_reg_cache[reg] == value) return; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: ov511_i2c_w(sd, reg, value); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: case BRIDGE_OV519: ov518_i2c_w(sd, reg, value); break; case BRIDGE_OVFX2: ovfx2_i2c_w(sd, reg, value); break; case BRIDGE_W9968CF: w9968cf_i2c_w(sd, reg, value); break; } if (sd->gspca_dev.usb_err >= 0) { /* Up on sensor reset empty the register cache */ if (reg == 0x12 && (value & 0x80)) memset(sd->sensor_reg_cache, -1, sizeof(sd->sensor_reg_cache)); else sd->sensor_reg_cache[reg] = value; } } static int i2c_r(struct sd *sd, u8 reg) { int ret = -1; if (sd->sensor_reg_cache[reg] != -1) return sd->sensor_reg_cache[reg]; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: ret = ov511_i2c_r(sd, reg); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: case BRIDGE_OV519: ret = ov518_i2c_r(sd, reg); break; case BRIDGE_OVFX2: ret = ovfx2_i2c_r(sd, reg); break; case BRIDGE_W9968CF: ret = w9968cf_i2c_r(sd, reg); break; } if (ret >= 0) sd->sensor_reg_cache[reg] = ret; return ret; } /* Writes bits at positions specified by mask to an I2C reg. Bits that are in * the same position as 1's in "mask" are cleared and set to "value". Bits * that are in the same position as 0's in "mask" are preserved, regardless * of their respective state in "value". */ static void i2c_w_mask(struct sd *sd, u8 reg, u8 value, u8 mask) { int rc; u8 oldval; value &= mask; /* Enforce mask on value */ rc = i2c_r(sd, reg); if (rc < 0) return; oldval = rc & ~mask; /* Clear the masked bits */ value |= oldval; /* Set the desired bits */ i2c_w(sd, reg, value); } /* Temporarily stops OV511 from functioning. Must do this before changing * registers while the camera is streaming */ static inline void ov51x_stop(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; gspca_dbg(gspca_dev, D_STREAM, "stopping\n"); sd->stopped = 1; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: reg_w(sd, R51x_SYS_RESET, 0x3d); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: reg_w_mask(sd, R51x_SYS_RESET, 0x3a, 0x3a); break; case BRIDGE_OV519: reg_w(sd, OV519_R51_RESET1, 0x0f); reg_w(sd, OV519_R51_RESET1, 0x00); reg_w(sd, 0x22, 0x00); /* FRAR */ break; case BRIDGE_OVFX2: reg_w_mask(sd, 0x0f, 0x00, 0x02); break; case BRIDGE_W9968CF: reg_w(sd, 0x3c, 0x0a05); /* stop USB transfer */ break; } } /* Restarts OV511 after ov511_stop() is called. Has no effect if it is not * actually stopped (for performance). */ static inline void ov51x_restart(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; gspca_dbg(gspca_dev, D_STREAM, "restarting\n"); if (!sd->stopped) return; sd->stopped = 0; /* Reinitialize the stream */ switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: reg_w(sd, R51x_SYS_RESET, 0x00); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: reg_w(sd, 0x2f, 0x80); reg_w(sd, R51x_SYS_RESET, 0x00); break; case BRIDGE_OV519: reg_w(sd, OV519_R51_RESET1, 0x0f); reg_w(sd, OV519_R51_RESET1, 0x00); reg_w(sd, 0x22, 0x1d); /* FRAR */ break; case BRIDGE_OVFX2: reg_w_mask(sd, 0x0f, 0x02, 0x02); break; case BRIDGE_W9968CF: reg_w(sd, 0x3c, 0x8a05); /* USB FIFO enable */ break; } } static void ov51x_set_slave_ids(struct sd *sd, u8 slave); /* This does an initial reset of an OmniVision sensor and ensures that I2C * is synchronized. Returns <0 on failure. */ static int init_ov_sensor(struct sd *sd, u8 slave) { int i; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; ov51x_set_slave_ids(sd, slave); /* Reset the sensor */ i2c_w(sd, 0x12, 0x80); /* Wait for it to initialize */ msleep(150); for (i = 0; i < i2c_detect_tries; i++) { if (i2c_r(sd, OV7610_REG_ID_HIGH) == 0x7f && i2c_r(sd, OV7610_REG_ID_LOW) == 0xa2) { gspca_dbg(gspca_dev, D_PROBE, "I2C synced in %d attempt(s)\n", i); return 0; } /* Reset the sensor */ i2c_w(sd, 0x12, 0x80); /* Wait for it to initialize */ msleep(150); /* Dummy read to sync I2C */ if (i2c_r(sd, 0x00) < 0) return -1; } return -1; } /* Set the read and write slave IDs. The "slave" argument is the write slave, * and the read slave will be set to (slave + 1). * This should not be called from outside the i2c I/O functions. * Sets I2C read and write slave IDs. Returns <0 for error */ static void ov51x_set_slave_ids(struct sd *sd, u8 slave) { switch (sd->bridge) { case BRIDGE_OVFX2: reg_w(sd, OVFX2_I2C_ADDR, slave); return; case BRIDGE_W9968CF: sd->sensor_addr = slave; return; } reg_w(sd, R51x_I2C_W_SID, slave); reg_w(sd, R51x_I2C_R_SID, slave + 1); } static void write_regvals(struct sd *sd, const struct ov_regvals *regvals, int n) { while (--n >= 0) { reg_w(sd, regvals->reg, regvals->val); regvals++; } } static void write_i2c_regvals(struct sd *sd, const struct ov_i2c_regvals *regvals, int n) { while (--n >= 0) { i2c_w(sd, regvals->reg, regvals->val); regvals++; } } /**************************************************************************** * * OV511 and sensor configuration * ***************************************************************************/ /* This initializes the OV2x10 / OV3610 / OV3620 / OV9600 */ static void ov_hires_configure(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int high, low; if (sd->bridge != BRIDGE_OVFX2) { gspca_err(gspca_dev, "error hires sensors only supported with ovfx2\n"); return; } gspca_dbg(gspca_dev, D_PROBE, "starting ov hires configuration\n"); /* Detect sensor (sub)type */ high = i2c_r(sd, 0x0a); low = i2c_r(sd, 0x0b); /* info("%x, %x", high, low); */ switch (high) { case 0x96: switch (low) { case 0x40: gspca_dbg(gspca_dev, D_PROBE, "Sensor is a OV2610\n"); sd->sensor = SEN_OV2610; return; case 0x41: gspca_dbg(gspca_dev, D_PROBE, "Sensor is a OV2610AE\n"); sd->sensor = SEN_OV2610AE; return; case 0xb1: gspca_dbg(gspca_dev, D_PROBE, "Sensor is a OV9600\n"); sd->sensor = SEN_OV9600; return; } break; case 0x36: if ((low & 0x0f) == 0x00) { gspca_dbg(gspca_dev, D_PROBE, "Sensor is a OV3610\n"); sd->sensor = SEN_OV3610; return; } break; } gspca_err(gspca_dev, "Error unknown sensor type: %02x%02x\n", high, low); } /* This initializes the OV8110, OV8610 sensor. The OV8110 uses * the same register settings as the OV8610, since they are very similar. */ static void ov8xx0_configure(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int rc; gspca_dbg(gspca_dev, D_PROBE, "starting ov8xx0 configuration\n"); /* Detect sensor (sub)type */ rc = i2c_r(sd, OV7610_REG_COM_I); if (rc < 0) { gspca_err(gspca_dev, "Error detecting sensor type\n"); return; } if ((rc & 3) == 1) sd->sensor = SEN_OV8610; else gspca_err(gspca_dev, "Unknown image sensor version: %d\n", rc & 3); } /* This initializes the OV7610, OV7620, or OV76BE sensor. The OV76BE uses * the same register settings as the OV7610, since they are very similar. */ static void ov7xx0_configure(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int rc, high, low; gspca_dbg(gspca_dev, D_PROBE, "starting OV7xx0 configuration\n"); /* Detect sensor (sub)type */ rc = i2c_r(sd, OV7610_REG_COM_I); /* add OV7670 here * it appears to be wrongly detected as a 7610 by default */ if (rc < 0) { gspca_err(gspca_dev, "Error detecting sensor type\n"); return; } if ((rc & 3) == 3) { /* quick hack to make OV7670s work */ high = i2c_r(sd, 0x0a); low = i2c_r(sd, 0x0b); /* info("%x, %x", high, low); */ if (high == 0x76 && (low & 0xf0) == 0x70) { gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV76%02x\n", low); sd->sensor = SEN_OV7670; } else { gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV7610\n"); sd->sensor = SEN_OV7610; } } else if ((rc & 3) == 1) { /* I don't know what's different about the 76BE yet. */ if (i2c_r(sd, 0x15) & 1) { gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV7620AE\n"); sd->sensor = SEN_OV7620AE; } else { gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV76BE\n"); sd->sensor = SEN_OV76BE; } } else if ((rc & 3) == 0) { /* try to read product id registers */ high = i2c_r(sd, 0x0a); if (high < 0) { gspca_err(gspca_dev, "Error detecting camera chip PID\n"); return; } low = i2c_r(sd, 0x0b); if (low < 0) { gspca_err(gspca_dev, "Error detecting camera chip VER\n"); return; } if (high == 0x76) { switch (low) { case 0x30: gspca_err(gspca_dev, "Sensor is an OV7630/OV7635\n"); gspca_err(gspca_dev, "7630 is not supported by this driver\n"); return; case 0x40: gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV7645\n"); sd->sensor = SEN_OV7640; /* FIXME */ break; case 0x45: gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV7645B\n"); sd->sensor = SEN_OV7640; /* FIXME */ break; case 0x48: gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV7648\n"); sd->sensor = SEN_OV7648; break; case 0x60: gspca_dbg(gspca_dev, D_PROBE, "Sensor is a OV7660\n"); sd->sensor = SEN_OV7660; break; default: gspca_err(gspca_dev, "Unknown sensor: 0x76%02x\n", low); return; } } else { gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV7620\n"); sd->sensor = SEN_OV7620; } } else { gspca_err(gspca_dev, "Unknown image sensor version: %d\n", rc & 3); } } /* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */ static void ov6xx0_configure(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int rc; gspca_dbg(gspca_dev, D_PROBE, "starting OV6xx0 configuration\n"); /* Detect sensor (sub)type */ rc = i2c_r(sd, OV7610_REG_COM_I); if (rc < 0) { gspca_err(gspca_dev, "Error detecting sensor type\n"); return; } /* Ugh. The first two bits are the version bits, but * the entire register value must be used. I guess OVT * underestimated how many variants they would make. */ switch (rc) { case 0x00: sd->sensor = SEN_OV6630; pr_warn("WARNING: Sensor is an OV66308. Your camera may have been misdetected in previous driver versions.\n"); break; case 0x01: sd->sensor = SEN_OV6620; gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV6620\n"); break; case 0x02: sd->sensor = SEN_OV6630; gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV66308AE\n"); break; case 0x03: sd->sensor = SEN_OV66308AF; gspca_dbg(gspca_dev, D_PROBE, "Sensor is an OV66308AF\n"); break; case 0x90: sd->sensor = SEN_OV6630; pr_warn("WARNING: Sensor is an OV66307. Your camera may have been misdetected in previous driver versions.\n"); break; default: gspca_err(gspca_dev, "FATAL: Unknown sensor version: 0x%02x\n", rc); return; } /* Set sensor-specific vars */ sd->sif = 1; } /* Turns on or off the LED. Only has an effect with OV511+/OV518(+)/OV519 */ static void ov51x_led_control(struct sd *sd, int on) { if (sd->invert_led) on = !on; switch (sd->bridge) { /* OV511 has no LED control */ case BRIDGE_OV511PLUS: reg_w(sd, R511_SYS_LED_CTL, on); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: reg_w_mask(sd, R518_GPIO_OUT, 0x02 * on, 0x02); break; case BRIDGE_OV519: reg_w_mask(sd, OV519_GPIO_DATA_OUT0, on, 1); break; } } static void sd_reset_snapshot(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (!sd->snapshot_needs_reset) return; /* Note it is important that we clear sd->snapshot_needs_reset, before actually clearing the snapshot state in the bridge otherwise we might race with the pkt_scan interrupt handler */ sd->snapshot_needs_reset = 0; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: reg_w(sd, R51x_SYS_SNAP, 0x02); reg_w(sd, R51x_SYS_SNAP, 0x00); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: reg_w(sd, R51x_SYS_SNAP, 0x02); /* Reset */ reg_w(sd, R51x_SYS_SNAP, 0x01); /* Enable */ break; case BRIDGE_OV519: reg_w(sd, R51x_SYS_RESET, 0x40); reg_w(sd, R51x_SYS_RESET, 0x00); break; } } static void ov51x_upload_quan_tables(struct sd *sd) { static const unsigned char yQuanTable511[] = { 0, 1, 1, 2, 2, 3, 3, 4, 1, 1, 1, 2, 2, 3, 4, 4, 1, 1, 2, 2, 3, 4, 4, 4, 2, 2, 2, 3, 4, 4, 4, 4, 2, 2, 3, 4, 4, 5, 5, 5, 3, 3, 4, 4, 5, 5, 5, 5, 3, 4, 4, 4, 5, 5, 5, 5, 4, 4, 4, 4, 5, 5, 5, 5 }; static const unsigned char uvQuanTable511[] = { 0, 2, 2, 3, 4, 4, 4, 4, 2, 2, 2, 4, 4, 4, 4, 4, 2, 2, 3, 4, 4, 4, 4, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 }; /* OV518 quantization tables are 8x4 (instead of 8x8) */ static const unsigned char yQuanTable518[] = { 5, 4, 5, 6, 6, 7, 7, 7, 5, 5, 5, 5, 6, 7, 7, 7, 6, 6, 6, 6, 7, 7, 7, 8, 7, 7, 6, 7, 7, 7, 8, 8 }; static const unsigned char uvQuanTable518[] = { 6, 6, 6, 7, 7, 7, 7, 7, 6, 6, 6, 7, 7, 7, 7, 7, 6, 6, 6, 7, 7, 7, 7, 8, 7, 7, 7, 7, 7, 7, 8, 8 }; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; const unsigned char *pYTable, *pUVTable; unsigned char val0, val1; int i, size, reg = R51x_COMP_LUT_BEGIN; gspca_dbg(gspca_dev, D_PROBE, "Uploading quantization tables\n"); if (sd->bridge == BRIDGE_OV511 || sd->bridge == BRIDGE_OV511PLUS) { pYTable = yQuanTable511; pUVTable = uvQuanTable511; size = 32; } else { pYTable = yQuanTable518; pUVTable = uvQuanTable518; size = 16; } for (i = 0; i < size; i++) { val0 = *pYTable++; val1 = *pYTable++; val0 &= 0x0f; val1 &= 0x0f; val0 |= val1 << 4; reg_w(sd, reg, val0); val0 = *pUVTable++; val1 = *pUVTable++; val0 &= 0x0f; val1 &= 0x0f; val0 |= val1 << 4; reg_w(sd, reg + size, val0); reg++; } } /* This initializes the OV511/OV511+ and the sensor */ static void ov511_configure(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; /* For 511 and 511+ */ static const struct ov_regvals init_511[] = { { R51x_SYS_RESET, 0x7f }, { R51x_SYS_INIT, 0x01 }, { R51x_SYS_RESET, 0x7f }, { R51x_SYS_INIT, 0x01 }, { R51x_SYS_RESET, 0x3f }, { R51x_SYS_INIT, 0x01 }, { R51x_SYS_RESET, 0x3d }, }; static const struct ov_regvals norm_511[] = { { R511_DRAM_FLOW_CTL, 0x01 }, { R51x_SYS_SNAP, 0x00 }, { R51x_SYS_SNAP, 0x02 }, { R51x_SYS_SNAP, 0x00 }, { R511_FIFO_OPTS, 0x1f }, { R511_COMP_EN, 0x00 }, { R511_COMP_LUT_EN, 0x03 }, }; static const struct ov_regvals norm_511_p[] = { { R511_DRAM_FLOW_CTL, 0xff }, { R51x_SYS_SNAP, 0x00 }, { R51x_SYS_SNAP, 0x02 }, { R51x_SYS_SNAP, 0x00 }, { R511_FIFO_OPTS, 0xff }, { R511_COMP_EN, 0x00 }, { R511_COMP_LUT_EN, 0x03 }, }; static const struct ov_regvals compress_511[] = { { 0x70, 0x1f }, { 0x71, 0x05 }, { 0x72, 0x06 }, { 0x73, 0x06 }, { 0x74, 0x14 }, { 0x75, 0x03 }, { 0x76, 0x04 }, { 0x77, 0x04 }, }; gspca_dbg(gspca_dev, D_PROBE, "Device custom id %x\n", reg_r(sd, R51x_SYS_CUST_ID)); write_regvals(sd, init_511, ARRAY_SIZE(init_511)); switch (sd->bridge) { case BRIDGE_OV511: write_regvals(sd, norm_511, ARRAY_SIZE(norm_511)); break; case BRIDGE_OV511PLUS: write_regvals(sd, norm_511_p, ARRAY_SIZE(norm_511_p)); break; } /* Init compression */ write_regvals(sd, compress_511, ARRAY_SIZE(compress_511)); ov51x_upload_quan_tables(sd); } /* This initializes the OV518/OV518+ and the sensor */ static void ov518_configure(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; /* For 518 and 518+ */ static const struct ov_regvals init_518[] = { { R51x_SYS_RESET, 0x40 }, { R51x_SYS_INIT, 0xe1 }, { R51x_SYS_RESET, 0x3e }, { R51x_SYS_INIT, 0xe1 }, { R51x_SYS_RESET, 0x00 }, { R51x_SYS_INIT, 0xe1 }, { 0x46, 0x00 }, { 0x5d, 0x03 }, }; static const struct ov_regvals norm_518[] = { { R51x_SYS_SNAP, 0x02 }, /* Reset */ { R51x_SYS_SNAP, 0x01 }, /* Enable */ { 0x31, 0x0f }, { 0x5d, 0x03 }, { 0x24, 0x9f }, { 0x25, 0x90 }, { 0x20, 0x00 }, { 0x51, 0x04 }, { 0x71, 0x19 }, { 0x2f, 0x80 }, }; static const struct ov_regvals norm_518_p[] = { { R51x_SYS_SNAP, 0x02 }, /* Reset */ { R51x_SYS_SNAP, 0x01 }, /* Enable */ { 0x31, 0x0f }, { 0x5d, 0x03 }, { 0x24, 0x9f }, { 0x25, 0x90 }, { 0x20, 0x60 }, { 0x51, 0x02 }, { 0x71, 0x19 }, { 0x40, 0xff }, { 0x41, 0x42 }, { 0x46, 0x00 }, { 0x33, 0x04 }, { 0x21, 0x19 }, { 0x3f, 0x10 }, { 0x2f, 0x80 }, }; /* First 5 bits of custom ID reg are a revision ID on OV518 */ sd->revision = reg_r(sd, R51x_SYS_CUST_ID) & 0x1f; gspca_dbg(gspca_dev, D_PROBE, "Device revision %d\n", sd->revision); write_regvals(sd, init_518, ARRAY_SIZE(init_518)); /* Set LED GPIO pin to output mode */ reg_w_mask(sd, R518_GPIO_CTL, 0x00, 0x02); switch (sd->bridge) { case BRIDGE_OV518: write_regvals(sd, norm_518, ARRAY_SIZE(norm_518)); break; case BRIDGE_OV518PLUS: write_regvals(sd, norm_518_p, ARRAY_SIZE(norm_518_p)); break; } ov51x_upload_quan_tables(sd); reg_w(sd, 0x2f, 0x80); } static void ov519_configure(struct sd *sd) { static const struct ov_regvals init_519[] = { { 0x5a, 0x6d }, /* EnableSystem */ { 0x53, 0x9b }, /* don't enable the microcontroller */ { OV519_R54_EN_CLK1, 0xff }, /* set bit2 to enable jpeg */ { 0x5d, 0x03 }, { 0x49, 0x01 }, { 0x48, 0x00 }, /* Set LED pin to output mode. Bit 4 must be cleared or sensor * detection will fail. This deserves further investigation. */ { OV519_GPIO_IO_CTRL0, 0xee }, { OV519_R51_RESET1, 0x0f }, { OV519_R51_RESET1, 0x00 }, { 0x22, 0x00 }, /* windows reads 0x55 at this point*/ }; write_regvals(sd, init_519, ARRAY_SIZE(init_519)); } static void ovfx2_configure(struct sd *sd) { static const struct ov_regvals init_fx2[] = { { 0x00, 0x60 }, { 0x02, 0x01 }, { 0x0f, 0x1d }, { 0xe9, 0x82 }, { 0xea, 0xc7 }, { 0xeb, 0x10 }, { 0xec, 0xf6 }, }; sd->stopped = 1; write_regvals(sd, init_fx2, ARRAY_SIZE(init_fx2)); } /* set the mode */ /* This function works for ov7660 only */ static void ov519_set_mode(struct sd *sd) { static const struct ov_regvals bridge_ov7660[2][10] = { {{0x10, 0x14}, {0x11, 0x1e}, {0x12, 0x00}, {0x13, 0x00}, {0x14, 0x00}, {0x15, 0x00}, {0x16, 0x00}, {0x20, 0x0c}, {0x25, 0x01}, {0x26, 0x00}}, {{0x10, 0x28}, {0x11, 0x3c}, {0x12, 0x00}, {0x13, 0x00}, {0x14, 0x00}, {0x15, 0x00}, {0x16, 0x00}, {0x20, 0x0c}, {0x25, 0x03}, {0x26, 0x00}} }; static const struct ov_i2c_regvals sensor_ov7660[2][3] = { {{0x12, 0x00}, {0x24, 0x00}, {0x0c, 0x0c}}, {{0x12, 0x00}, {0x04, 0x00}, {0x0c, 0x00}} }; static const struct ov_i2c_regvals sensor_ov7660_2[] = { {OV7670_R17_HSTART, 0x13}, {OV7670_R18_HSTOP, 0x01}, {OV7670_R32_HREF, 0x92}, {OV7670_R19_VSTART, 0x02}, {OV7670_R1A_VSTOP, 0x7a}, {OV7670_R03_VREF, 0x00}, /* {0x33, 0x00}, */ /* {0x34, 0x07}, */ /* {0x36, 0x00}, */ /* {0x6b, 0x0a}, */ }; write_regvals(sd, bridge_ov7660[sd->gspca_dev.curr_mode], ARRAY_SIZE(bridge_ov7660[0])); write_i2c_regvals(sd, sensor_ov7660[sd->gspca_dev.curr_mode], ARRAY_SIZE(sensor_ov7660[0])); write_i2c_regvals(sd, sensor_ov7660_2, ARRAY_SIZE(sensor_ov7660_2)); } /* set the frame rate */ /* This function works for sensors ov7640, ov7648 ov7660 and ov7670 only */ static void ov519_set_fr(struct sd *sd) { int fr; u8 clock; /* frame rate table with indices: * - mode = 0: 320x240, 1: 640x480 * - fr rate = 0: 30, 1: 25, 2: 20, 3: 15, 4: 10, 5: 5 * - reg = 0: bridge a4, 1: bridge 23, 2: sensor 11 (clock) */ static const u8 fr_tb[2][6][3] = { {{0x04, 0xff, 0x00}, {0x04, 0x1f, 0x00}, {0x04, 0x1b, 0x00}, {0x04, 0x15, 0x00}, {0x04, 0x09, 0x00}, {0x04, 0x01, 0x00}}, {{0x0c, 0xff, 0x00}, {0x0c, 0x1f, 0x00}, {0x0c, 0x1b, 0x00}, {0x04, 0xff, 0x01}, {0x04, 0x1f, 0x01}, {0x04, 0x1b, 0x01}}, }; if (frame_rate > 0) sd->frame_rate = frame_rate; if (sd->frame_rate >= 30) fr = 0; else if (sd->frame_rate >= 25) fr = 1; else if (sd->frame_rate >= 20) fr = 2; else if (sd->frame_rate >= 15) fr = 3; else if (sd->frame_rate >= 10) fr = 4; else fr = 5; reg_w(sd, 0xa4, fr_tb[sd->gspca_dev.curr_mode][fr][0]); reg_w(sd, 0x23, fr_tb[sd->gspca_dev.curr_mode][fr][1]); clock = fr_tb[sd->gspca_dev.curr_mode][fr][2]; if (sd->sensor == SEN_OV7660) clock |= 0x80; /* enable double clock */ ov518_i2c_w(sd, OV7670_R11_CLKRC, clock); } static void setautogain(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; i2c_w_mask(sd, 0x13, val ? 0x05 : 0x00, 0x05); } /* 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 = &gspca_dev->cam; sd->bridge = id->driver_info & BRIDGE_MASK; sd->invert_led = (id->driver_info & BRIDGE_INVERT_LED) != 0; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: cam->cam_mode = ov511_vga_mode; cam->nmodes = ARRAY_SIZE(ov511_vga_mode); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: cam->cam_mode = ov518_vga_mode; cam->nmodes = ARRAY_SIZE(ov518_vga_mode); break; case BRIDGE_OV519: cam->cam_mode = ov519_vga_mode; cam->nmodes = ARRAY_SIZE(ov519_vga_mode); break; case BRIDGE_OVFX2: cam->cam_mode = ov519_vga_mode; cam->nmodes = ARRAY_SIZE(ov519_vga_mode); cam->bulk_size = OVFX2_BULK_SIZE; cam->bulk_nurbs = MAX_NURBS; cam->bulk = 1; break; case BRIDGE_W9968CF: cam->cam_mode = w9968cf_vga_mode; cam->nmodes = ARRAY_SIZE(w9968cf_vga_mode); break; } sd->frame_rate = 15; 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 = &gspca_dev->cam; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: ov511_configure(gspca_dev); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: ov518_configure(gspca_dev); break; case BRIDGE_OV519: ov519_configure(sd); break; case BRIDGE_OVFX2: ovfx2_configure(sd); break; case BRIDGE_W9968CF: w9968cf_configure(sd); break; } /* The OV519 must be more aggressive about sensor detection since * I2C write will never fail if the sensor is not present. We have * to try to initialize the sensor to detect its presence */ sd->sensor = -1; /* Test for 76xx */ if (init_ov_sensor(sd, OV7xx0_SID) >= 0) { ov7xx0_configure(sd); /* Test for 6xx0 */ } else if (init_ov_sensor(sd, OV6xx0_SID) >= 0) { ov6xx0_configure(sd); /* Test for 8xx0 */ } else if (init_ov_sensor(sd, OV8xx0_SID) >= 0) { ov8xx0_configure(sd); /* Test for 3xxx / 2xxx */ } else if (init_ov_sensor(sd, OV_HIRES_SID) >= 0) { ov_hires_configure(sd); } else { gspca_err(gspca_dev, "Can't determine sensor slave IDs\n"); goto error; } if (sd->sensor < 0) goto error; ov51x_led_control(sd, 0); /* turn LED off */ switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: if (sd->sif) { cam->cam_mode = ov511_sif_mode; cam->nmodes = ARRAY_SIZE(ov511_sif_mode); } break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: if (sd->sif) { cam->cam_mode = ov518_sif_mode; cam->nmodes = ARRAY_SIZE(ov518_sif_mode); } break; case BRIDGE_OV519: if (sd->sif) { cam->cam_mode = ov519_sif_mode; cam->nmodes = ARRAY_SIZE(ov519_sif_mode); } break; case BRIDGE_OVFX2: switch (sd->sensor) { case SEN_OV2610: case SEN_OV2610AE: cam->cam_mode = ovfx2_ov2610_mode; cam->nmodes = ARRAY_SIZE(ovfx2_ov2610_mode); break; case SEN_OV3610: cam->cam_mode = ovfx2_ov3610_mode; cam->nmodes = ARRAY_SIZE(ovfx2_ov3610_mode); break; case SEN_OV9600: cam->cam_mode = ovfx2_ov9600_mode; cam->nmodes = ARRAY_SIZE(ovfx2_ov9600_mode); break; default: if (sd->sif) { cam->cam_mode = ov519_sif_mode; cam->nmodes = ARRAY_SIZE(ov519_sif_mode); } break; } break; case BRIDGE_W9968CF: if (sd->sif) cam->nmodes = ARRAY_SIZE(w9968cf_vga_mode) - 1; /* w9968cf needs initialisation once the sensor is known */ w9968cf_init(sd); break; } /* initialize the sensor */ switch (sd->sensor) { case SEN_OV2610: write_i2c_regvals(sd, norm_2610, ARRAY_SIZE(norm_2610)); /* Enable autogain, autoexpo, awb, bandfilter */ i2c_w_mask(sd, 0x13, 0x27, 0x27); break; case SEN_OV2610AE: write_i2c_regvals(sd, norm_2610ae, ARRAY_SIZE(norm_2610ae)); /* enable autoexpo */ i2c_w_mask(sd, 0x13, 0x05, 0x05); break; case SEN_OV3610: write_i2c_regvals(sd, norm_3620b, ARRAY_SIZE(norm_3620b)); /* Enable autogain, autoexpo, awb, bandfilter */ i2c_w_mask(sd, 0x13, 0x27, 0x27); break; case SEN_OV6620: write_i2c_regvals(sd, norm_6x20, ARRAY_SIZE(norm_6x20)); break; case SEN_OV6630: case SEN_OV66308AF: write_i2c_regvals(sd, norm_6x30, ARRAY_SIZE(norm_6x30)); break; default: /* case SEN_OV7610: */ /* case SEN_OV76BE: */ write_i2c_regvals(sd, norm_7610, ARRAY_SIZE(norm_7610)); i2c_w_mask(sd, 0x0e, 0x00, 0x40); break; case SEN_OV7620: case SEN_OV7620AE: write_i2c_regvals(sd, norm_7620, ARRAY_SIZE(norm_7620)); break; case SEN_OV7640: case SEN_OV7648: write_i2c_regvals(sd, norm_7640, ARRAY_SIZE(norm_7640)); break; case SEN_OV7660: i2c_w(sd, OV7670_R12_COM7, OV7670_COM7_RESET); msleep(14); reg_w(sd, OV519_R57_SNAPSHOT, 0x23); write_regvals(sd, init_519_ov7660, ARRAY_SIZE(init_519_ov7660)); write_i2c_regvals(sd, norm_7660, ARRAY_SIZE(norm_7660)); sd->gspca_dev.curr_mode = 1; /* 640x480 */ ov519_set_mode(sd); ov519_set_fr(sd); sd_reset_snapshot(gspca_dev); ov51x_restart(sd); ov51x_stop(sd); /* not in win traces */ ov51x_led_control(sd, 0); break; case SEN_OV7670: write_i2c_regvals(sd, norm_7670, ARRAY_SIZE(norm_7670)); break; case SEN_OV8610: write_i2c_regvals(sd, norm_8610, ARRAY_SIZE(norm_8610)); break; case SEN_OV9600: write_i2c_regvals(sd, norm_9600, ARRAY_SIZE(norm_9600)); /* enable autoexpo */ /* i2c_w_mask(sd, 0x13, 0x05, 0x05); */ break; } return gspca_dev->usb_err; error: gspca_err(gspca_dev, "OV519 Config failed\n"); return -EINVAL; } /* function called at start time before URB creation */ static int sd_isoc_init(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; switch (sd->bridge) { case BRIDGE_OVFX2: if (gspca_dev->pixfmt.width != 800) gspca_dev->cam.bulk_size = OVFX2_BULK_SIZE; else gspca_dev->cam.bulk_size = 7 * 4096; break; } return 0; } /* Set up the OV511/OV511+ with the given image parameters. * * Do not put any sensor-specific code in here (including I2C I/O functions) */ static void ov511_mode_init_regs(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int hsegs, vsegs, packet_size, fps, needed; int interlaced = 0; struct usb_host_interface *alt; struct usb_interface *intf; 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"); sd->gspca_dev.usb_err = -EIO; return; } if (alt->desc.bNumEndpoints < 1) { sd->gspca_dev.usb_err = -ENODEV; return; } packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); reg_w(sd, R51x_FIFO_PSIZE, packet_size >> 5); reg_w(sd, R511_CAM_UV_EN, 0x01); reg_w(sd, R511_SNAP_UV_EN, 0x01); reg_w(sd, R511_SNAP_OPTS, 0x03); /* Here I'm assuming that snapshot size == image size. * I hope that's always true. --claudio */ hsegs = (sd->gspca_dev.pixfmt.width >> 3) - 1; vsegs = (sd->gspca_dev.pixfmt.height >> 3) - 1; reg_w(sd, R511_CAM_PXCNT, hsegs); reg_w(sd, R511_CAM_LNCNT, vsegs); reg_w(sd, R511_CAM_PXDIV, 0x00); reg_w(sd, R511_CAM_LNDIV, 0x00); /* YUV420, low pass filter on */ reg_w(sd, R511_CAM_OPTS, 0x03); /* Snapshot additions */ reg_w(sd, R511_SNAP_PXCNT, hsegs); reg_w(sd, R511_SNAP_LNCNT, vsegs); reg_w(sd, R511_SNAP_PXDIV, 0x00); reg_w(sd, R511_SNAP_LNDIV, 0x00); /******** Set the framerate ********/ if (frame_rate > 0) sd->frame_rate = frame_rate; switch (sd->sensor) { case SEN_OV6620: /* No framerate control, doesn't like higher rates yet */ sd->clockdiv = 3; break; /* Note once the FIXME's in mode_init_ov_sensor_regs() are fixed for more sensors we need to do this for them too */ case SEN_OV7620: case SEN_OV7620AE: case SEN_OV7640: case SEN_OV7648: case SEN_OV76BE: if (sd->gspca_dev.pixfmt.width == 320) interlaced = 1; fallthrough; case SEN_OV6630: case SEN_OV7610: case SEN_OV7670: switch (sd->frame_rate) { case 30: case 25: /* Not enough bandwidth to do 640x480 @ 30 fps */ if (sd->gspca_dev.pixfmt.width != 640) { sd->clockdiv = 0; break; } /* For 640x480 case */ fallthrough; default: /* case 20: */ /* case 15: */ sd->clockdiv = 1; break; case 10: sd->clockdiv = 2; break; case 5: sd->clockdiv = 5; break; } if (interlaced) { sd->clockdiv = (sd->clockdiv + 1) * 2 - 1; /* Higher then 10 does not work */ if (sd->clockdiv > 10) sd->clockdiv = 10; } break; case SEN_OV8610: /* No framerate control ?? */ sd->clockdiv = 0; break; } /* Check if we have enough bandwidth to disable compression */ fps = (interlaced ? 60 : 30) / (sd->clockdiv + 1) + 1; needed = fps * sd->gspca_dev.pixfmt.width * sd->gspca_dev.pixfmt.height * 3 / 2; /* 1000 isoc packets/sec */ if (needed > 1000 * packet_size) { /* Enable Y and UV quantization and compression */ reg_w(sd, R511_COMP_EN, 0x07); reg_w(sd, R511_COMP_LUT_EN, 0x03); } else { reg_w(sd, R511_COMP_EN, 0x06); reg_w(sd, R511_COMP_LUT_EN, 0x00); } reg_w(sd, R51x_SYS_RESET, OV511_RESET_OMNICE); reg_w(sd, R51x_SYS_RESET, 0); } /* Sets up the OV518/OV518+ with the given image parameters * * OV518 needs a completely different approach, until we can figure out what * the individual registers do. Also, only 15 FPS is supported now. * * Do not put any sensor-specific code in here (including I2C I/O functions) */ static void ov518_mode_init_regs(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int hsegs, vsegs, packet_size; struct usb_host_interface *alt; struct usb_interface *intf; 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"); sd->gspca_dev.usb_err = -EIO; return; } if (alt->desc.bNumEndpoints < 1) { sd->gspca_dev.usb_err = -ENODEV; return; } packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); ov518_reg_w32(sd, R51x_FIFO_PSIZE, packet_size & ~7, 2); /******** Set the mode ********/ reg_w(sd, 0x2b, 0); reg_w(sd, 0x2c, 0); reg_w(sd, 0x2d, 0); reg_w(sd, 0x2e, 0); reg_w(sd, 0x3b, 0); reg_w(sd, 0x3c, 0); reg_w(sd, 0x3d, 0); reg_w(sd, 0x3e, 0); if (sd->bridge == BRIDGE_OV518) { /* Set 8-bit (YVYU) input format */ reg_w_mask(sd, 0x20, 0x08, 0x08); /* Set 12-bit (4:2:0) output format */ reg_w_mask(sd, 0x28, 0x80, 0xf0); reg_w_mask(sd, 0x38, 0x80, 0xf0); } else { reg_w(sd, 0x28, 0x80); reg_w(sd, 0x38, 0x80); } hsegs = sd->gspca_dev.pixfmt.width / 16; vsegs = sd->gspca_dev.pixfmt.height / 4; reg_w(sd, 0x29, hsegs); reg_w(sd, 0x2a, vsegs); reg_w(sd, 0x39, hsegs); reg_w(sd, 0x3a, vsegs); /* Windows driver does this here; who knows why */ reg_w(sd, 0x2f, 0x80); /******** Set the framerate ********/ if (sd->bridge == BRIDGE_OV518PLUS && sd->revision == 0 && sd->sensor == SEN_OV7620AE) sd->clockdiv = 0; else sd->clockdiv = 1; /* Mode independent, but framerate dependent, regs */ /* 0x51: Clock divider; Only works on some cams which use 2 crystals */ reg_w(sd, 0x51, 0x04); reg_w(sd, 0x22, 0x18); reg_w(sd, 0x23, 0xff); if (sd->bridge == BRIDGE_OV518PLUS) { switch (sd->sensor) { case SEN_OV7620AE: /* * HdG: 640x480 needs special handling on device * revision 2, we check for device revision > 0 to * avoid regressions, as we don't know the correct * thing todo for revision 1. * * Also this likely means we don't need to * differentiate between the OV7620 and OV7620AE, * earlier testing hitting this same problem likely * happened to be with revision < 2 cams using an * OV7620 and revision 2 cams using an OV7620AE. */ if (sd->revision > 0 && sd->gspca_dev.pixfmt.width == 640) { reg_w(sd, 0x20, 0x60); reg_w(sd, 0x21, 0x1f); } else { reg_w(sd, 0x20, 0x00); reg_w(sd, 0x21, 0x19); } break; case SEN_OV7620: reg_w(sd, 0x20, 0x00); reg_w(sd, 0x21, 0x19); break; default: reg_w(sd, 0x21, 0x19); } } else reg_w(sd, 0x71, 0x17); /* Compression-related? */ /* FIXME: Sensor-specific */ /* Bit 5 is what matters here. Of course, it is "reserved" */ i2c_w(sd, 0x54, 0x23); reg_w(sd, 0x2f, 0x80); if (sd->bridge == BRIDGE_OV518PLUS) { reg_w(sd, 0x24, 0x94); reg_w(sd, 0x25, 0x90); ov518_reg_w32(sd, 0xc4, 400, 2); /* 190h */ ov518_reg_w32(sd, 0xc6, 540, 2); /* 21ch */ ov518_reg_w32(sd, 0xc7, 540, 2); /* 21ch */ ov518_reg_w32(sd, 0xc8, 108, 2); /* 6ch */ ov518_reg_w32(sd, 0xca, 131098, 3); /* 2001ah */ ov518_reg_w32(sd, 0xcb, 532, 2); /* 214h */ ov518_reg_w32(sd, 0xcc, 2400, 2); /* 960h */ ov518_reg_w32(sd, 0xcd, 32, 2); /* 20h */ ov518_reg_w32(sd, 0xce, 608, 2); /* 260h */ } else { reg_w(sd, 0x24, 0x9f); reg_w(sd, 0x25, 0x90); ov518_reg_w32(sd, 0xc4, 400, 2); /* 190h */ ov518_reg_w32(sd, 0xc6, 381, 2); /* 17dh */ ov518_reg_w32(sd, 0xc7, 381, 2); /* 17dh */ ov518_reg_w32(sd, 0xc8, 128, 2); /* 80h */ ov518_reg_w32(sd, 0xca, 183331, 3); /* 2cc23h */ ov518_reg_w32(sd, 0xcb, 746, 2); /* 2eah */ ov518_reg_w32(sd, 0xcc, 1750, 2); /* 6d6h */ ov518_reg_w32(sd, 0xcd, 45, 2); /* 2dh */ ov518_reg_w32(sd, 0xce, 851, 2); /* 353h */ } reg_w(sd, 0x2f, 0x80); } /* Sets up the OV519 with the given image parameters * * OV519 needs a completely different approach, until we can figure out what * the individual registers do. * * Do not put any sensor-specific code in here (including I2C I/O functions) */ static void ov519_mode_init_regs(struct sd *sd) { static const struct ov_regvals mode_init_519_ov7670[] = { { 0x5d, 0x03 }, /* Turn off suspend mode */ { 0x53, 0x9f }, /* was 9b in 1.65-1.08 */ { OV519_R54_EN_CLK1, 0x0f }, /* bit2 (jpeg enable) */ { 0xa2, 0x20 }, /* a2-a5 are undocumented */ { 0xa3, 0x18 }, { 0xa4, 0x04 }, { 0xa5, 0x28 }, { 0x37, 0x00 }, /* SetUsbInit */ { 0x55, 0x02 }, /* 4.096 Mhz audio clock */ /* Enable both fields, YUV Input, disable defect comp (why?) */ { 0x20, 0x0c }, { 0x21, 0x38 }, { 0x22, 0x1d }, { 0x17, 0x50 }, /* undocumented */ { 0x37, 0x00 }, /* undocumented */ { 0x40, 0xff }, /* I2C timeout counter */ { 0x46, 0x00 }, /* I2C clock prescaler */ { 0x59, 0x04 }, /* new from windrv 090403 */ { 0xff, 0x00 }, /* undocumented */ /* windows reads 0x55 at this point, why? */ }; static const struct ov_regvals mode_init_519[] = { { 0x5d, 0x03 }, /* Turn off suspend mode */ { 0x53, 0x9f }, /* was 9b in 1.65-1.08 */ { OV519_R54_EN_CLK1, 0x0f }, /* bit2 (jpeg enable) */ { 0xa2, 0x20 }, /* a2-a5 are undocumented */ { 0xa3, 0x18 }, { 0xa4, 0x04 }, { 0xa5, 0x28 }, { 0x37, 0x00 }, /* SetUsbInit */ { 0x55, 0x02 }, /* 4.096 Mhz audio clock */ /* Enable both fields, YUV Input, disable defect comp (why?) */ { 0x22, 0x1d }, { 0x17, 0x50 }, /* undocumented */ { 0x37, 0x00 }, /* undocumented */ { 0x40, 0xff }, /* I2C timeout counter */ { 0x46, 0x00 }, /* I2C clock prescaler */ { 0x59, 0x04 }, /* new from windrv 090403 */ { 0xff, 0x00 }, /* undocumented */ /* windows reads 0x55 at this point, why? */ }; struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; /******** Set the mode ********/ switch (sd->sensor) { default: write_regvals(sd, mode_init_519, ARRAY_SIZE(mode_init_519)); if (sd->sensor == SEN_OV7640 || sd->sensor == SEN_OV7648) { /* Select 8-bit input mode */ reg_w_mask(sd, OV519_R20_DFR, 0x10, 0x10); } break; case SEN_OV7660: return; /* done by ov519_set_mode/fr() */ case SEN_OV7670: write_regvals(sd, mode_init_519_ov7670, ARRAY_SIZE(mode_init_519_ov7670)); break; } reg_w(sd, OV519_R10_H_SIZE, sd->gspca_dev.pixfmt.width >> 4); reg_w(sd, OV519_R11_V_SIZE, sd->gspca_dev.pixfmt.height >> 3); if (sd->sensor == SEN_OV7670 && sd->gspca_dev.cam.cam_mode[sd->gspca_dev.curr_mode].priv) reg_w(sd, OV519_R12_X_OFFSETL, 0x04); else if (sd->sensor == SEN_OV7648 && sd->gspca_dev.cam.cam_mode[sd->gspca_dev.curr_mode].priv) reg_w(sd, OV519_R12_X_OFFSETL, 0x01); else reg_w(sd, OV519_R12_X_OFFSETL, 0x00); reg_w(sd, OV519_R13_X_OFFSETH, 0x00); reg_w(sd, OV519_R14_Y_OFFSETL, 0x00); reg_w(sd, OV519_R15_Y_OFFSETH, 0x00); reg_w(sd, OV519_R16_DIVIDER, 0x00); reg_w(sd, OV519_R25_FORMAT, 0x03); /* YUV422 */ reg_w(sd, 0x26, 0x00); /* Undocumented */ /******** Set the framerate ********/ if (frame_rate > 0) sd->frame_rate = frame_rate; /* FIXME: These are only valid at the max resolution. */ sd->clockdiv = 0; switch (sd->sensor) { case SEN_OV7640: case SEN_OV7648: switch (sd->frame_rate) { default: /* case 30: */ reg_w(sd, 0xa4, 0x0c); reg_w(sd, 0x23, 0xff); break; case 25: reg_w(sd, 0xa4, 0x0c); reg_w(sd, 0x23, 0x1f); break; case 20: reg_w(sd, 0xa4, 0x0c); reg_w(sd, 0x23, 0x1b); break; case 15: reg_w(sd, 0xa4, 0x04); reg_w(sd, 0x23, 0xff); sd->clockdiv = 1; break; case 10: reg_w(sd, 0xa4, 0x04); reg_w(sd, 0x23, 0x1f); sd->clockdiv = 1; break; case 5: reg_w(sd, 0xa4, 0x04); reg_w(sd, 0x23, 0x1b); sd->clockdiv = 1; break; } break; case SEN_OV8610: switch (sd->frame_rate) { default: /* 15 fps */ /* case 15: */ reg_w(sd, 0xa4, 0x06); reg_w(sd, 0x23, 0xff); break; case 10: reg_w(sd, 0xa4, 0x06); reg_w(sd, 0x23, 0x1f); break; case 5: reg_w(sd, 0xa4, 0x06); reg_w(sd, 0x23, 0x1b); break; } break; case SEN_OV7670: /* guesses, based on 7640 */ gspca_dbg(gspca_dev, D_STREAM, "Setting framerate to %d fps\n", (sd->frame_rate == 0) ? 15 : sd->frame_rate); reg_w(sd, 0xa4, 0x10); switch (sd->frame_rate) { case 30: reg_w(sd, 0x23, 0xff); break; case 20: reg_w(sd, 0x23, 0x1b); break; default: /* case 15: */ reg_w(sd, 0x23, 0xff); sd->clockdiv = 1; break; } break; } } static void mode_init_ov_sensor_regs(struct sd *sd) { struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; int qvga, xstart, xend, ystart, yend; u8 v; qvga = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv & 1; /******** Mode (VGA/QVGA) and sensor specific regs ********/ switch (sd->sensor) { case SEN_OV2610: i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20); i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20); i2c_w(sd, 0x24, qvga ? 0x20 : 0x3a); i2c_w(sd, 0x25, qvga ? 0x30 : 0x60); i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40); i2c_w_mask(sd, 0x67, qvga ? 0xf0 : 0x90, 0xf0); i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20); return; case SEN_OV2610AE: { u8 v; /* frame rates: * 10fps / 5 fps for 1600x1200 * 40fps / 20fps for 800x600 */ v = 80; if (qvga) { if (sd->frame_rate < 25) v = 0x81; } else { if (sd->frame_rate < 10) v = 0x81; } i2c_w(sd, 0x11, v); i2c_w(sd, 0x12, qvga ? 0x60 : 0x20); return; } case SEN_OV3610: if (qvga) { xstart = (1040 - gspca_dev->pixfmt.width) / 2 + (0x1f << 4); ystart = (776 - gspca_dev->pixfmt.height) / 2; } else { xstart = (2076 - gspca_dev->pixfmt.width) / 2 + (0x10 << 4); ystart = (1544 - gspca_dev->pixfmt.height) / 2; } xend = xstart + gspca_dev->pixfmt.width; yend = ystart + gspca_dev->pixfmt.height; /* Writing to the COMH register resets the other windowing regs to their default values, so we must do this first. */ i2c_w_mask(sd, 0x12, qvga ? 0x40 : 0x00, 0xf0); i2c_w_mask(sd, 0x32, (((xend >> 1) & 7) << 3) | ((xstart >> 1) & 7), 0x3f); i2c_w_mask(sd, 0x03, (((yend >> 1) & 3) << 2) | ((ystart >> 1) & 3), 0x0f); i2c_w(sd, 0x17, xstart >> 4); i2c_w(sd, 0x18, xend >> 4); i2c_w(sd, 0x19, ystart >> 3); i2c_w(sd, 0x1a, yend >> 3); return; case SEN_OV8610: /* For OV8610 qvga means qsvga */ i2c_w_mask(sd, OV7610_REG_COM_C, qvga ? (1 << 5) : 0, 1 << 5); i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */ i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */ i2c_w_mask(sd, 0x2d, 0x00, 0x40); /* from windrv 090403 */ i2c_w_mask(sd, 0x28, 0x20, 0x20); /* progressive mode on */ break; case SEN_OV7610: i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20); i2c_w(sd, 0x35, qvga ? 0x1e : 0x9e); i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */ i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */ break; case SEN_OV7620: case SEN_OV7620AE: case SEN_OV76BE: i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20); i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20); i2c_w(sd, 0x24, qvga ? 0x20 : 0x3a); i2c_w(sd, 0x25, qvga ? 0x30 : 0x60); i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40); i2c_w_mask(sd, 0x67, qvga ? 0xb0 : 0x90, 0xf0); i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20); i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */ i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */ if (sd->sensor == SEN_OV76BE) i2c_w(sd, 0x35, qvga ? 0x1e : 0x9e); break; case SEN_OV7640: case SEN_OV7648: i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20); i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20); /* Setting this undocumented bit in qvga mode removes a very annoying vertical shaking of the image */ i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40); /* Unknown */ i2c_w_mask(sd, 0x67, qvga ? 0xf0 : 0x90, 0xf0); /* Allow higher automatic gain (to allow higher framerates) */ i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20); i2c_w_mask(sd, 0x12, 0x04, 0x04); /* AWB: 1 */ break; case SEN_OV7670: /* set COM7_FMT_VGA or COM7_FMT_QVGA * do we need to set anything else? * HSTART etc are set in set_ov_sensor_window itself */ i2c_w_mask(sd, OV7670_R12_COM7, qvga ? OV7670_COM7_FMT_QVGA : OV7670_COM7_FMT_VGA, OV7670_COM7_FMT_MASK); i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */ i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_AWB, OV7670_COM8_AWB); if (qvga) { /* QVGA from ov7670.c by * Jonathan Corbet */ xstart = 164; xend = 28; ystart = 14; yend = 494; } else { /* VGA */ xstart = 158; xend = 14; ystart = 10; yend = 490; } /* OV7670 hardware window registers are split across * multiple locations */ i2c_w(sd, OV7670_R17_HSTART, xstart >> 3); i2c_w(sd, OV7670_R18_HSTOP, xend >> 3); v = i2c_r(sd, OV7670_R32_HREF); v = (v & 0xc0) | ((xend & 0x7) << 3) | (xstart & 0x07); msleep(10); /* need to sleep between read and write to * same reg! */ i2c_w(sd, OV7670_R32_HREF, v); i2c_w(sd, OV7670_R19_VSTART, ystart >> 2); i2c_w(sd, OV7670_R1A_VSTOP, yend >> 2); v = i2c_r(sd, OV7670_R03_VREF); v = (v & 0xc0) | ((yend & 0x3) << 2) | (ystart & 0x03); msleep(10); /* need to sleep between read and write to * same reg! */ i2c_w(sd, OV7670_R03_VREF, v); break; case SEN_OV6620: i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20); i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */ i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */ break; case SEN_OV6630: case SEN_OV66308AF: i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20); i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */ break; case SEN_OV9600: { const struct ov_i2c_regvals *vals; static const struct ov_i2c_regvals sxga_15[] = { {0x11, 0x80}, {0x14, 0x3e}, {0x24, 0x85}, {0x25, 0x75} }; static const struct ov_i2c_regvals sxga_7_5[] = { {0x11, 0x81}, {0x14, 0x3e}, {0x24, 0x85}, {0x25, 0x75} }; static const struct ov_i2c_regvals vga_30[] = { {0x11, 0x81}, {0x14, 0x7e}, {0x24, 0x70}, {0x25, 0x60} }; static const struct ov_i2c_regvals vga_15[] = { {0x11, 0x83}, {0x14, 0x3e}, {0x24, 0x80}, {0x25, 0x70} }; /* frame rates: * 15fps / 7.5 fps for 1280x1024 * 30fps / 15fps for 640x480 */ i2c_w_mask(sd, 0x12, qvga ? 0x40 : 0x00, 0x40); if (qvga) vals = sd->frame_rate < 30 ? vga_15 : vga_30; else vals = sd->frame_rate < 15 ? sxga_7_5 : sxga_15; write_i2c_regvals(sd, vals, ARRAY_SIZE(sxga_15)); return; } default: return; } /******** Clock programming ********/ i2c_w(sd, 0x11, sd->clockdiv); } /* this function works for bridge ov519 and sensors ov7660 and ov7670 only */ static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip) { struct sd *sd = (struct sd *) gspca_dev; if (sd->gspca_dev.streaming) reg_w(sd, OV519_R51_RESET1, 0x0f); /* block stream */ i2c_w_mask(sd, OV7670_R1E_MVFP, OV7670_MVFP_MIRROR * hflip | OV7670_MVFP_VFLIP * vflip, OV7670_MVFP_MIRROR | OV7670_MVFP_VFLIP); if (sd->gspca_dev.streaming) reg_w(sd, OV519_R51_RESET1, 0x00); /* restart stream */ } static void set_ov_sensor_window(struct sd *sd) { struct gspca_dev *gspca_dev; int qvga, crop; int hwsbase, hwebase, vwsbase, vwebase, hwscale, vwscale; /* mode setup is fully handled in mode_init_ov_sensor_regs for these */ switch (sd->sensor) { case SEN_OV2610: case SEN_OV2610AE: case SEN_OV3610: case SEN_OV7670: case SEN_OV9600: mode_init_ov_sensor_regs(sd); return; case SEN_OV7660: ov519_set_mode(sd); ov519_set_fr(sd); return; } gspca_dev = &sd->gspca_dev; qvga = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv & 1; crop = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv & 2; /* The different sensor ICs handle setting up of window differently. * IF YOU SET IT WRONG, YOU WILL GET ALL ZERO ISOC DATA FROM OV51x!! */ switch (sd->sensor) { case SEN_OV8610: hwsbase = 0x1e; hwebase = 0x1e; vwsbase = 0x02; vwebase = 0x02; break; case SEN_OV7610: case SEN_OV76BE: hwsbase = 0x38; hwebase = 0x3a; vwsbase = vwebase = 0x05; break; case SEN_OV6620: case SEN_OV6630: case SEN_OV66308AF: hwsbase = 0x38; hwebase = 0x3a; vwsbase = 0x05; vwebase = 0x06; if (sd->sensor == SEN_OV66308AF && qvga) /* HDG: this fixes U and V getting swapped */ hwsbase++; if (crop) { hwsbase += 8; hwebase += 8; vwsbase += 11; vwebase += 11; } break; case SEN_OV7620: case SEN_OV7620AE: hwsbase = 0x2f; /* From 7620.SET (spec is wrong) */ hwebase = 0x2f; vwsbase = vwebase = 0x05; break; case SEN_OV7640: case SEN_OV7648: hwsbase = 0x1a; hwebase = 0x1a; vwsbase = vwebase = 0x03; break; default: return; } switch (sd->sensor) { case SEN_OV6620: case SEN_OV6630: case SEN_OV66308AF: if (qvga) { /* QCIF */ hwscale = 0; vwscale = 0; } else { /* CIF */ hwscale = 1; vwscale = 1; /* The datasheet says 0; * it's wrong */ } break; case SEN_OV8610: if (qvga) { /* QSVGA */ hwscale = 1; vwscale = 1; } else { /* SVGA */ hwscale = 2; vwscale = 2; } break; default: /* SEN_OV7xx0 */ if (qvga) { /* QVGA */ hwscale = 1; vwscale = 0; } else { /* VGA */ hwscale = 2; vwscale = 1; } } mode_init_ov_sensor_regs(sd); i2c_w(sd, 0x17, hwsbase); i2c_w(sd, 0x18, hwebase + (sd->sensor_width >> hwscale)); i2c_w(sd, 0x19, vwsbase); i2c_w(sd, 0x1a, vwebase + (sd->sensor_height >> vwscale)); } /* -- start the camera -- */ static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; /* Default for most bridges, allow bridge_mode_init_regs to override */ sd->sensor_width = sd->gspca_dev.pixfmt.width; sd->sensor_height = sd->gspca_dev.pixfmt.height; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: ov511_mode_init_regs(sd); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: ov518_mode_init_regs(sd); break; case BRIDGE_OV519: ov519_mode_init_regs(sd); break; /* case BRIDGE_OVFX2: nothing to do */ case BRIDGE_W9968CF: w9968cf_mode_init_regs(sd); break; } set_ov_sensor_window(sd); /* Force clear snapshot state in case the snapshot button was pressed while we weren't streaming */ sd->snapshot_needs_reset = 1; sd_reset_snapshot(gspca_dev); sd->first_frame = 3; ov51x_restart(sd); ov51x_led_control(sd, 1); return gspca_dev->usb_err; } static void sd_stopN(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; ov51x_stop(sd); ov51x_led_control(sd, 0); } static void sd_stop0(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (!sd->gspca_dev.present) return; if (sd->bridge == BRIDGE_W9968CF) w9968cf_stop0(sd); #if IS_ENABLED(CONFIG_INPUT) /* If the last button state is pressed, release it now! */ if (sd->snapshot_pressed) { input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); input_sync(gspca_dev->input_dev); sd->snapshot_pressed = 0; } #endif if (sd->bridge == BRIDGE_OV519) reg_w(sd, OV519_R57_SNAPSHOT, 0x23); } static void ov51x_handle_button(struct gspca_dev *gspca_dev, u8 state) { struct sd *sd = (struct sd *) gspca_dev; if (sd->snapshot_pressed != state) { #if IS_ENABLED(CONFIG_INPUT) input_report_key(gspca_dev->input_dev, KEY_CAMERA, state); input_sync(gspca_dev->input_dev); #endif if (state) sd->snapshot_needs_reset = 1; sd->snapshot_pressed = state; } else { /* On the ov511 / ov519 we need to reset the button state multiple times, as resetting does not work as long as the button stays pressed */ switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: case BRIDGE_OV519: if (state) sd->snapshot_needs_reset = 1; break; } } } static void ov511_pkt_scan(struct gspca_dev *gspca_dev, u8 *in, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; /* SOF/EOF packets have 1st to 8th bytes zeroed and the 9th * byte non-zero. The EOF packet has image width/height in the * 10th and 11th bytes. The 9th byte is given as follows: * * bit 7: EOF * 6: compression enabled * 5: 422/420/400 modes * 4: 422/420/400 modes * 3: 1 * 2: snapshot button on * 1: snapshot frame * 0: even/odd field */ if (!(in[0] | in[1] | in[2] | in[3] | in[4] | in[5] | in[6] | in[7]) && (in[8] & 0x08)) { ov51x_handle_button(gspca_dev, (in[8] >> 2) & 1); if (in[8] & 0x80) { /* Frame end */ if ((in[9] + 1) * 8 != gspca_dev->pixfmt.width || (in[10] + 1) * 8 != gspca_dev->pixfmt.height) { gspca_err(gspca_dev, "Invalid frame size, got: %dx%d, requested: %dx%d\n", (in[9] + 1) * 8, (in[10] + 1) * 8, gspca_dev->pixfmt.width, gspca_dev->pixfmt.height); gspca_dev->last_packet_type = DISCARD_PACKET; return; } /* Add 11 byte footer to frame, might be useful */ gspca_frame_add(gspca_dev, LAST_PACKET, in, 11); return; } else { /* Frame start */ gspca_frame_add(gspca_dev, FIRST_PACKET, in, 0); sd->packet_nr = 0; } } /* Ignore the packet number */ len--; /* intermediate packet */ gspca_frame_add(gspca_dev, INTER_PACKET, in, len); } static void ov518_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; /* A false positive here is likely, until OVT gives me * the definitive SOF/EOF format */ if ((!(data[0] | data[1] | data[2] | data[3] | data[5])) && data[6]) { ov51x_handle_button(gspca_dev, (data[6] >> 1) & 1); gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0); sd->packet_nr = 0; } if (gspca_dev->last_packet_type == DISCARD_PACKET) return; /* Does this device use packet numbers ? */ if (len & 7) { len--; if (sd->packet_nr == data[len]) sd->packet_nr++; /* The last few packets of the frame (which are all 0's except that they may contain part of the footer), are numbered 0 */ else if (sd->packet_nr == 0 || data[len]) { gspca_err(gspca_dev, "Invalid packet nr: %d (expect: %d)\n", (int)data[len], (int)sd->packet_nr); gspca_dev->last_packet_type = DISCARD_PACKET; return; } } /* intermediate packet */ gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } static void ov519_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { /* Header of ov519 is 16 bytes: * Byte Value Description * 0 0xff magic * 1 0xff magic * 2 0xff magic * 3 0xXX 0x50 = SOF, 0x51 = EOF * 9 0xXX 0x01 initial frame without data, * 0x00 standard frame with image * 14 Lo in EOF: length of image data / 8 * 15 Hi */ if (data[0] == 0xff && data[1] == 0xff && data[2] == 0xff) { switch (data[3]) { case 0x50: /* start of frame */ /* Don't check the button state here, as the state usually (always ?) changes at EOF and checking it here leads to unnecessary snapshot state resets. */ #define HDRSZ 16 data += HDRSZ; len -= HDRSZ; #undef HDRSZ if (data[0] == 0xff || data[1] == 0xd8) gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); else gspca_dev->last_packet_type = DISCARD_PACKET; return; case 0x51: /* end of frame */ ov51x_handle_button(gspca_dev, data[11] & 1); if (data[9] != 0) gspca_dev->last_packet_type = DISCARD_PACKET; gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); return; } } /* intermediate packet */ gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } static void ovfx2_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; gspca_frame_add(gspca_dev, INTER_PACKET, data, len); /* A short read signals EOF */ if (len < gspca_dev->cam.bulk_size) { /* If the frame is short, and it is one of the first ones the sensor and bridge are still syncing, so drop it. */ if (sd->first_frame) { sd->first_frame--; if (gspca_dev->image_len < sd->gspca_dev.pixfmt.width * sd->gspca_dev.pixfmt.height) gspca_dev->last_packet_type = DISCARD_PACKET; } gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0); } } 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; switch (sd->bridge) { case BRIDGE_OV511: case BRIDGE_OV511PLUS: ov511_pkt_scan(gspca_dev, data, len); break; case BRIDGE_OV518: case BRIDGE_OV518PLUS: ov518_pkt_scan(gspca_dev, data, len); break; case BRIDGE_OV519: ov519_pkt_scan(gspca_dev, data, len); break; case BRIDGE_OVFX2: ovfx2_pkt_scan(gspca_dev, data, len); break; case BRIDGE_W9968CF: w9968cf_pkt_scan(gspca_dev, data, len); break; } } /* -- management routines -- */ static void setbrightness(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; static const struct ov_i2c_regvals brit_7660[][7] = { {{0x0f, 0x6a}, {0x24, 0x40}, {0x25, 0x2b}, {0x26, 0x90}, {0x27, 0xe0}, {0x28, 0xe0}, {0x2c, 0xe0}}, {{0x0f, 0x6a}, {0x24, 0x50}, {0x25, 0x40}, {0x26, 0xa1}, {0x27, 0xc0}, {0x28, 0xc0}, {0x2c, 0xc0}}, {{0x0f, 0x6a}, {0x24, 0x68}, {0x25, 0x58}, {0x26, 0xc2}, {0x27, 0xa0}, {0x28, 0xa0}, {0x2c, 0xa0}}, {{0x0f, 0x6a}, {0x24, 0x70}, {0x25, 0x68}, {0x26, 0xd3}, {0x27, 0x80}, {0x28, 0x80}, {0x2c, 0x80}}, {{0x0f, 0x6a}, {0x24, 0x80}, {0x25, 0x70}, {0x26, 0xd3}, {0x27, 0x20}, {0x28, 0x20}, {0x2c, 0x20}}, {{0x0f, 0x6a}, {0x24, 0x88}, {0x25, 0x78}, {0x26, 0xd3}, {0x27, 0x40}, {0x28, 0x40}, {0x2c, 0x40}}, {{0x0f, 0x6a}, {0x24, 0x90}, {0x25, 0x80}, {0x26, 0xd4}, {0x27, 0x60}, {0x28, 0x60}, {0x2c, 0x60}} }; switch (sd->sensor) { case SEN_OV8610: case SEN_OV7610: case SEN_OV76BE: case SEN_OV6620: case SEN_OV6630: case SEN_OV66308AF: case SEN_OV7640: case SEN_OV7648: i2c_w(sd, OV7610_REG_BRT, val); break; case SEN_OV7620: case SEN_OV7620AE: i2c_w(sd, OV7610_REG_BRT, val); break; case SEN_OV7660: write_i2c_regvals(sd, brit_7660[val], ARRAY_SIZE(brit_7660[0])); break; case SEN_OV7670: /*win trace * i2c_w_mask(sd, OV7670_R13_COM8, 0, OV7670_COM8_AEC); */ i2c_w(sd, OV7670_R55_BRIGHT, ov7670_abs_to_sm(val)); break; } } static void setcontrast(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; static const struct ov_i2c_regvals contrast_7660[][31] = { {{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf8}, {0x6f, 0xa0}, {0x70, 0x58}, {0x71, 0x38}, {0x72, 0x30}, {0x73, 0x30}, {0x74, 0x28}, {0x75, 0x28}, {0x76, 0x24}, {0x77, 0x24}, {0x78, 0x22}, {0x79, 0x28}, {0x7a, 0x2a}, {0x7b, 0x34}, {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3d}, {0x7f, 0x65}, {0x80, 0x70}, {0x81, 0x77}, {0x82, 0x7d}, {0x83, 0x83}, {0x84, 0x88}, {0x85, 0x8d}, {0x86, 0x96}, {0x87, 0x9f}, {0x88, 0xb0}, {0x89, 0xc4}, {0x8a, 0xd9}}, {{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf8}, {0x6f, 0x94}, {0x70, 0x58}, {0x71, 0x40}, {0x72, 0x30}, {0x73, 0x30}, {0x74, 0x30}, {0x75, 0x30}, {0x76, 0x2c}, {0x77, 0x24}, {0x78, 0x22}, {0x79, 0x28}, {0x7a, 0x2a}, {0x7b, 0x31}, {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3d}, {0x7f, 0x62}, {0x80, 0x6d}, {0x81, 0x75}, {0x82, 0x7b}, {0x83, 0x81}, {0x84, 0x87}, {0x85, 0x8d}, {0x86, 0x98}, {0x87, 0xa1}, {0x88, 0xb2}, {0x89, 0xc6}, {0x8a, 0xdb}}, {{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf0}, {0x6f, 0x84}, {0x70, 0x58}, {0x71, 0x48}, {0x72, 0x40}, {0x73, 0x40}, {0x74, 0x28}, {0x75, 0x28}, {0x76, 0x28}, {0x77, 0x24}, {0x78, 0x26}, {0x79, 0x28}, {0x7a, 0x28}, {0x7b, 0x34}, {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3c}, {0x7f, 0x5d}, {0x80, 0x68}, {0x81, 0x71}, {0x82, 0x79}, {0x83, 0x81}, {0x84, 0x86}, {0x85, 0x8b}, {0x86, 0x95}, {0x87, 0x9e}, {0x88, 0xb1}, {0x89, 0xc5}, {0x8a, 0xd9}}, {{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf0}, {0x6f, 0x70}, {0x70, 0x58}, {0x71, 0x58}, {0x72, 0x48}, {0x73, 0x48}, {0x74, 0x38}, {0x75, 0x40}, {0x76, 0x34}, {0x77, 0x34}, {0x78, 0x2e}, {0x79, 0x28}, {0x7a, 0x24}, {0x7b, 0x22}, {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3c}, {0x7f, 0x58}, {0x80, 0x63}, {0x81, 0x6e}, {0x82, 0x77}, {0x83, 0x80}, {0x84, 0x87}, {0x85, 0x8f}, {0x86, 0x9c}, {0x87, 0xa9}, {0x88, 0xc0}, {0x89, 0xd4}, {0x8a, 0xe6}}, {{0x6c, 0xa0}, {0x6d, 0xf0}, {0x6e, 0x90}, {0x6f, 0x80}, {0x70, 0x70}, {0x71, 0x80}, {0x72, 0x60}, {0x73, 0x60}, {0x74, 0x58}, {0x75, 0x60}, {0x76, 0x4c}, {0x77, 0x38}, {0x78, 0x38}, {0x79, 0x2a}, {0x7a, 0x20}, {0x7b, 0x0e}, {0x7c, 0x0a}, {0x7d, 0x14}, {0x7e, 0x26}, {0x7f, 0x46}, {0x80, 0x54}, {0x81, 0x64}, {0x82, 0x70}, {0x83, 0x7c}, {0x84, 0x87}, {0x85, 0x93}, {0x86, 0xa6}, {0x87, 0xb4}, {0x88, 0xd0}, {0x89, 0xe5}, {0x8a, 0xf5}}, {{0x6c, 0x60}, {0x6d, 0x80}, {0x6e, 0x60}, {0x6f, 0x80}, {0x70, 0x80}, {0x71, 0x80}, {0x72, 0x88}, {0x73, 0x30}, {0x74, 0x70}, {0x75, 0x68}, {0x76, 0x64}, {0x77, 0x50}, {0x78, 0x3c}, {0x79, 0x22}, {0x7a, 0x10}, {0x7b, 0x08}, {0x7c, 0x06}, {0x7d, 0x0e}, {0x7e, 0x1a}, {0x7f, 0x3a}, {0x80, 0x4a}, {0x81, 0x5a}, {0x82, 0x6b}, {0x83, 0x7b}, {0x84, 0x89}, {0x85, 0x96}, {0x86, 0xaf}, {0x87, 0xc3}, {0x88, 0xe1}, {0x89, 0xf2}, {0x8a, 0xfa}}, {{0x6c, 0x20}, {0x6d, 0x40}, {0x6e, 0x20}, {0x6f, 0x60}, {0x70, 0x88}, {0x71, 0xc8}, {0x72, 0xc0}, {0x73, 0xb8}, {0x74, 0xa8}, {0x75, 0xb8}, {0x76, 0x80}, {0x77, 0x5c}, {0x78, 0x26}, {0x79, 0x10}, {0x7a, 0x08}, {0x7b, 0x04}, {0x7c, 0x02}, {0x7d, 0x06}, {0x7e, 0x0a}, {0x7f, 0x22}, {0x80, 0x33}, {0x81, 0x4c}, {0x82, 0x64}, {0x83, 0x7b}, {0x84, 0x90}, {0x85, 0xa7}, {0x86, 0xc7}, {0x87, 0xde}, {0x88, 0xf1}, {0x89, 0xf9}, {0x8a, 0xfd}}, }; switch (sd->sensor) { case SEN_OV7610: case SEN_OV6620: i2c_w(sd, OV7610_REG_CNT, val); break; case SEN_OV6630: case SEN_OV66308AF: i2c_w_mask(sd, OV7610_REG_CNT, val >> 4, 0x0f); break; case SEN_OV8610: { static const u8 ctab[] = { 0x03, 0x09, 0x0b, 0x0f, 0x53, 0x6f, 0x35, 0x7f }; /* Use Y gamma control instead. Bit 0 enables it. */ i2c_w(sd, 0x64, ctab[val >> 5]); break; } case SEN_OV7620: case SEN_OV7620AE: { static const u8 ctab[] = { 0x01, 0x05, 0x09, 0x11, 0x15, 0x35, 0x37, 0x57, 0x5b, 0xa5, 0xa7, 0xc7, 0xc9, 0xcf, 0xef, 0xff }; /* Use Y gamma control instead. Bit 0 enables it. */ i2c_w(sd, 0x64, ctab[val >> 4]); break; } case SEN_OV7660: write_i2c_regvals(sd, contrast_7660[val], ARRAY_SIZE(contrast_7660[0])); break; case SEN_OV7670: /* check that this isn't just the same as ov7610 */ i2c_w(sd, OV7670_R56_CONTRAS, val >> 1); break; } } static void setexposure(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; i2c_w(sd, 0x10, val); } static void setcolors(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; static const struct ov_i2c_regvals colors_7660[][6] = { {{0x4f, 0x28}, {0x50, 0x2a}, {0x51, 0x02}, {0x52, 0x0a}, {0x53, 0x19}, {0x54, 0x23}}, {{0x4f, 0x47}, {0x50, 0x4a}, {0x51, 0x03}, {0x52, 0x11}, {0x53, 0x2c}, {0x54, 0x3e}}, {{0x4f, 0x66}, {0x50, 0x6b}, {0x51, 0x05}, {0x52, 0x19}, {0x53, 0x40}, {0x54, 0x59}}, {{0x4f, 0x84}, {0x50, 0x8b}, {0x51, 0x06}, {0x52, 0x20}, {0x53, 0x53}, {0x54, 0x73}}, {{0x4f, 0xa3}, {0x50, 0xab}, {0x51, 0x08}, {0x52, 0x28}, {0x53, 0x66}, {0x54, 0x8e}}, }; switch (sd->sensor) { case SEN_OV8610: case SEN_OV7610: case SEN_OV76BE: case SEN_OV6620: case SEN_OV6630: case SEN_OV66308AF: i2c_w(sd, OV7610_REG_SAT, val); break; case SEN_OV7620: case SEN_OV7620AE: /* Use UV gamma control instead. Bits 0 & 7 are reserved. */ /* rc = ov_i2c_write(sd->dev, 0x62, (val >> 9) & 0x7e); if (rc < 0) goto out; */ i2c_w(sd, OV7610_REG_SAT, val); break; case SEN_OV7640: case SEN_OV7648: i2c_w(sd, OV7610_REG_SAT, val & 0xf0); break; case SEN_OV7660: write_i2c_regvals(sd, colors_7660[val], ARRAY_SIZE(colors_7660[0])); break; case SEN_OV7670: /* supported later once I work out how to do it * transparently fail now! */ /* set REG_COM13 values for UV sat auto mode */ break; } } static void setautobright(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; i2c_w_mask(sd, 0x2d, val ? 0x10 : 0x00, 0x10); } static void setfreq_i(struct sd *sd, s32 val) { if (sd->sensor == SEN_OV7660 || sd->sensor == SEN_OV7670) { switch (val) { case 0: /* Banding filter disabled */ i2c_w_mask(sd, OV7670_R13_COM8, 0, OV7670_COM8_BFILT); break; case 1: /* 50 hz */ i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_BFILT, OV7670_COM8_BFILT); i2c_w_mask(sd, OV7670_R3B_COM11, 0x08, 0x18); break; case 2: /* 60 hz */ i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_BFILT, OV7670_COM8_BFILT); i2c_w_mask(sd, OV7670_R3B_COM11, 0x00, 0x18); break; case 3: /* Auto hz - ov7670 only */ i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_BFILT, OV7670_COM8_BFILT); i2c_w_mask(sd, OV7670_R3B_COM11, OV7670_COM11_HZAUTO, 0x18); break; } } else { switch (val) { case 0: /* Banding filter disabled */ i2c_w_mask(sd, 0x2d, 0x00, 0x04); i2c_w_mask(sd, 0x2a, 0x00, 0x80); break; case 1: /* 50 hz (filter on and framerate adj) */ i2c_w_mask(sd, 0x2d, 0x04, 0x04); i2c_w_mask(sd, 0x2a, 0x80, 0x80); /* 20 fps -> 16.667 fps */ if (sd->sensor == SEN_OV6620 || sd->sensor == SEN_OV6630 || sd->sensor == SEN_OV66308AF) i2c_w(sd, 0x2b, 0x5e); else i2c_w(sd, 0x2b, 0xac); break; case 2: /* 60 hz (filter on, ...) */ i2c_w_mask(sd, 0x2d, 0x04, 0x04); if (sd->sensor == SEN_OV6620 || sd->sensor == SEN_OV6630 || sd->sensor == SEN_OV66308AF) { /* 20 fps -> 15 fps */ i2c_w_mask(sd, 0x2a, 0x80, 0x80); i2c_w(sd, 0x2b, 0xa8); } else { /* no framerate adj. */ i2c_w_mask(sd, 0x2a, 0x00, 0x80); } break; } } } static void setfreq(struct gspca_dev *gspca_dev, s32 val) { struct sd *sd = (struct sd *) gspca_dev; setfreq_i(sd, val); /* Ugly but necessary */ if (sd->bridge == BRIDGE_W9968CF) w9968cf_set_crop_window(sd); } static int sd_get_jcomp(struct gspca_dev *gspca_dev, struct v4l2_jpegcompression *jcomp) { struct sd *sd = (struct sd *) gspca_dev; if (sd->bridge != BRIDGE_W9968CF) return -ENOTTY; memset(jcomp, 0, sizeof *jcomp); jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual); jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT | V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI; return 0; } static int sd_set_jcomp(struct gspca_dev *gspca_dev, const struct v4l2_jpegcompression *jcomp) { struct sd *sd = (struct sd *) gspca_dev; if (sd->bridge != BRIDGE_W9968CF) return -ENOTTY; v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality); return 0; } static int sd_g_volatile_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; switch (ctrl->id) { case V4L2_CID_AUTOGAIN: gspca_dev->exposure->val = i2c_r(sd, 0x10); break; } return 0; } 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: setcontrast(gspca_dev, ctrl->val); break; case V4L2_CID_POWER_LINE_FREQUENCY: setfreq(gspca_dev, ctrl->val); break; case V4L2_CID_AUTOBRIGHTNESS: if (ctrl->is_new) setautobright(gspca_dev, ctrl->val); if (!ctrl->val && sd->brightness->is_new) setbrightness(gspca_dev, sd->brightness->val); break; case V4L2_CID_SATURATION: setcolors(gspca_dev, ctrl->val); break; case V4L2_CID_HFLIP: sethvflip(gspca_dev, ctrl->val, sd->vflip->val); break; case V4L2_CID_AUTOGAIN: if (ctrl->is_new) setautogain(gspca_dev, ctrl->val); if (!ctrl->val && gspca_dev->exposure->is_new) setexposure(gspca_dev, gspca_dev->exposure->val); break; case V4L2_CID_JPEG_COMPRESSION_QUALITY: return -EBUSY; /* Should never happen, as we grab the ctrl */ } return gspca_dev->usb_err; } static const struct v4l2_ctrl_ops sd_ctrl_ops = { .g_volatile_ctrl = sd_g_volatile_ctrl, .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; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 10); if (valid_controls[sd->sensor].has_brightness) sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, sd->sensor == SEN_OV7660 ? 6 : 255, 1, sd->sensor == SEN_OV7660 ? 3 : 127); if (valid_controls[sd->sensor].has_contrast) { if (sd->sensor == SEN_OV7660) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_CONTRAST, 0, 6, 1, 3); else v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_CONTRAST, 0, 255, 1, (sd->sensor == SEN_OV6630 || sd->sensor == SEN_OV66308AF) ? 200 : 127); } if (valid_controls[sd->sensor].has_sat) v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_SATURATION, 0, sd->sensor == SEN_OV7660 ? 4 : 255, 1, sd->sensor == SEN_OV7660 ? 2 : 127); if (valid_controls[sd->sensor].has_exposure) gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_EXPOSURE, 0, 255, 1, 127); if (valid_controls[sd->sensor].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 (valid_controls[sd->sensor].has_autobright) sd->autobright = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_AUTOBRIGHTNESS, 0, 1, 1, 1); if (valid_controls[sd->sensor].has_autogain) gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); if (valid_controls[sd->sensor].has_freq) { if (sd->sensor == SEN_OV7670) sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, V4L2_CID_POWER_LINE_FREQUENCY, V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0, V4L2_CID_POWER_LINE_FREQUENCY_AUTO); else sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, V4L2_CID_POWER_LINE_FREQUENCY, V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 0); } if (sd->bridge == BRIDGE_W9968CF) sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_JPEG_COMPRESSION_QUALITY, QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF); if (hdl->error) { gspca_err(gspca_dev, "Could not initialize controls\n"); return hdl->error; } if (gspca_dev->autogain) v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, true); if (sd->autobright) v4l2_ctrl_auto_cluster(2, &sd->autobright, 0, false); if (sd->hflip) v4l2_ctrl_cluster(2, &sd->hflip); return 0; } /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = sd_config, .init = sd_init, .init_controls = sd_init_controls, .isoc_init = sd_isoc_init, .start = sd_start, .stopN = sd_stopN, .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, .dq_callback = sd_reset_snapshot, .get_jcomp = sd_get_jcomp, .set_jcomp = sd_set_jcomp, #if IS_ENABLED(CONFIG_INPUT) .other_input = 1, #endif }; /* -- module initialisation -- */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x041e, 0x4003), .driver_info = BRIDGE_W9968CF }, {USB_DEVICE(0x041e, 0x4052), .driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED }, {USB_DEVICE(0x041e, 0x405f), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x041e, 0x4060), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x041e, 0x4061), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x041e, 0x4064), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x041e, 0x4067), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x041e, 0x4068), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x045e, 0x028c), .driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED }, {USB_DEVICE(0x054c, 0x0154), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x054c, 0x0155), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x05a9, 0x0511), .driver_info = BRIDGE_OV511 }, {USB_DEVICE(0x05a9, 0x0518), .driver_info = BRIDGE_OV518 }, {USB_DEVICE(0x05a9, 0x0519), .driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED }, {USB_DEVICE(0x05a9, 0x0530), .driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED }, {USB_DEVICE(0x05a9, 0x2800), .driver_info = BRIDGE_OVFX2 }, {USB_DEVICE(0x05a9, 0x4519), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x05a9, 0x8519), .driver_info = BRIDGE_OV519 }, {USB_DEVICE(0x05a9, 0xa511), .driver_info = BRIDGE_OV511PLUS }, {USB_DEVICE(0x05a9, 0xa518), .driver_info = BRIDGE_OV518PLUS }, {USB_DEVICE(0x0813, 0x0002), .driver_info = BRIDGE_OV511PLUS }, {USB_DEVICE(0x0b62, 0x0059), .driver_info = BRIDGE_OVFX2 }, {USB_DEVICE(0x0e96, 0xc001), .driver_info = BRIDGE_OVFX2 }, {USB_DEVICE(0x1046, 0x9967), .driver_info = BRIDGE_W9968CF }, {USB_DEVICE(0x8020, 0xef04), .driver_info = BRIDGE_OVFX2 }, {} }; 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); module_param(frame_rate, int, 0644); MODULE_PARM_DESC(frame_rate, "Frame rate (5, 10, 15, 20 or 30 fps)"); |
| 4 4 1 3 1 2 1 2 2 2 1 4 4 2 2 1 1 2 2 7 1 7 1 6 6 7 4 2 4 3 5 5 1 4 1 3 1 2 1 5 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 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 | // SPDX-License-Identifier: GPL-2.0 /* * USB HandSpring Visor, Palm m50x, and Sony Clie driver * (supports all of the Palm OS USB devices) * * Copyright (C) 1999 - 2004 * Greg Kroah-Hartman (greg@kroah.com) * * See Documentation/usb/usb-serial.rst for more information on using this * driver * */ #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/moduleparam.h> #include <linux/spinlock.h> #include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include <linux/usb/cdc.h> #include "visor.h" /* * Version Information */ #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>" #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver" /* function prototypes for a handspring visor */ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port); static void visor_close(struct usb_serial_port *port); static int visor_probe(struct usb_serial *serial, const struct usb_device_id *id); static int visor_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds); static int clie_5_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds); static void visor_read_int_callback(struct urb *urb); static int clie_3_5_startup(struct usb_serial *serial); static int palm_os_3_probe(struct usb_serial *serial, const struct usb_device_id *id); static int palm_os_4_probe(struct usb_serial *serial, const struct usb_device_id *id); static const struct usb_device_id id_table[] = { { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID), .driver_info = (kernel_ulong_t)&palm_os_3_probe }, { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE_INTERFACE_CLASS(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID, 0xff), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { } /* Terminating entry */ }; static const struct usb_device_id clie_id_5_table[] = { { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID), .driver_info = (kernel_ulong_t)&palm_os_4_probe }, { } /* Terminating entry */ }; static const struct usb_device_id clie_id_3_5_table[] = { { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) }, { } /* Terminating entry */ }; static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) }, { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) }, { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) }, { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) }, { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) }, { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) }, { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) }, { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) }, { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) }, { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) }, { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table_combined); /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */ static struct usb_serial_driver handspring_device = { .driver = { .name = "visor", }, .description = "Handspring Visor / Palm OS", .id_table = id_table, .num_ports = 2, .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, .probe = visor_probe, .calc_num_ports = visor_calc_num_ports, .read_int_callback = visor_read_int_callback, }; /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */ static struct usb_serial_driver clie_5_device = { .driver = { .name = "clie_5", }, .description = "Sony Clie 5.0", .id_table = clie_id_5_table, .num_ports = 2, .num_bulk_out = 2, .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, .probe = visor_probe, .calc_num_ports = clie_5_calc_num_ports, .read_int_callback = visor_read_int_callback, }; /* device info for the Sony Clie OS version 3.5 */ static struct usb_serial_driver clie_3_5_device = { .driver = { .name = "clie_3.5", }, .description = "Sony Clie 3.5", .id_table = clie_id_3_5_table, .num_ports = 1, .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, .attach = clie_3_5_startup, }; static struct usb_serial_driver * const serial_drivers[] = { &handspring_device, &clie_5_device, &clie_3_5_device, NULL }; /****************************************************************************** * Handspring Visor specific driver functions ******************************************************************************/ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port) { int result = 0; if (!port->read_urb) { /* this is needed for some brain dead Sony devices */ dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n"); return -ENODEV; } /* Start reading from the device */ result = usb_serial_generic_open(tty, port); if (result) goto exit; if (port->interrupt_in_urb) { dev_dbg(&port->dev, "adding interrupt input for treo\n"); result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n", __func__, result); } exit: return result; } static void visor_close(struct usb_serial_port *port) { unsigned char *transfer_buffer; usb_serial_generic_close(port); usb_kill_urb(port->interrupt_in_urb); transfer_buffer = kmalloc(0x12, GFP_KERNEL); if (!transfer_buffer) return; usb_control_msg(port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0), VISOR_CLOSE_NOTIFICATION, 0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300); kfree(transfer_buffer); } static void visor_read_int_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; int status = urb->status; int result; switch (status) { case 0: /* success */ break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", __func__, status); return; default: dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", __func__, status); goto exit; } /* * This information is still unknown what it can be used for. * If anyone has an idea, please let the author know... * * Rumor has it this endpoint is used to notify when data * is ready to be read from the bulk ones. */ usb_serial_debug_data(&port->dev, __func__, urb->actual_length, urb->transfer_buffer); exit: result = usb_submit_urb(urb, GFP_ATOMIC); if (result) dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n", __func__, result); } static int palm_os_3_probe(struct usb_serial *serial, const struct usb_device_id *id) { struct device *dev = &serial->dev->dev; struct visor_connection_info *connection_info; unsigned char *transfer_buffer; char *string; int retval = 0; int i; int num_ports = 0; transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; /* send a get connection info request */ retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_GET_CONNECTION_INFORMATION, 0xc2, 0x0000, 0x0000, transfer_buffer, sizeof(*connection_info), 300); if (retval < 0) { dev_err(dev, "%s - error %d getting connection information\n", __func__, retval); goto exit; } if (retval != sizeof(*connection_info)) { dev_err(dev, "Invalid connection information received from device\n"); retval = -ENODEV; goto exit; } connection_info = (struct visor_connection_info *)transfer_buffer; num_ports = le16_to_cpu(connection_info->num_ports); /* Handle devices that report invalid stuff here. */ if (num_ports == 0 || num_ports > 2) { dev_warn(dev, "%s: No valid connect info available\n", serial->type->description); num_ports = 2; } for (i = 0; i < num_ports; ++i) { switch (connection_info->connections[i].port_function_id) { case VISOR_FUNCTION_GENERIC: string = "Generic"; break; case VISOR_FUNCTION_DEBUGGER: string = "Debugger"; break; case VISOR_FUNCTION_HOTSYNC: string = "HotSync"; break; case VISOR_FUNCTION_CONSOLE: string = "Console"; break; case VISOR_FUNCTION_REMOTE_FILE_SYS: string = "Remote File System"; break; default: string = "unknown"; break; } dev_info(dev, "%s: port %d, is for %s use\n", serial->type->description, connection_info->connections[i].port, string); } dev_info(dev, "%s: Number of ports: %d\n", serial->type->description, num_ports); /* * save off our num_ports info so that we can use it in the * calc_num_ports callback */ usb_set_serial_data(serial, (void *)(long)num_ports); /* ask for the number of bytes available, but ignore the response as it is broken */ retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_REQUEST_BYTES_AVAILABLE, 0xc2, 0x0000, 0x0005, transfer_buffer, 0x02, 300); if (retval < 0) dev_err(dev, "%s - error %d getting bytes available request\n", __func__, retval); retval = 0; exit: kfree(transfer_buffer); return retval; } static int palm_os_4_probe(struct usb_serial *serial, const struct usb_device_id *id) { struct device *dev = &serial->dev->dev; struct palm_ext_connection_info *connection_info; unsigned char *transfer_buffer; int retval; transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), PALM_GET_EXT_CONNECTION_INFORMATION, 0xc2, 0x0000, 0x0000, transfer_buffer, sizeof(*connection_info), 300); if (retval < 0) dev_err(dev, "%s - error %d getting connection info\n", __func__, retval); else usb_serial_debug_data(dev, __func__, retval, transfer_buffer); kfree(transfer_buffer); return 0; } static int visor_probe(struct usb_serial *serial, const struct usb_device_id *id) { int retval = 0; int (*startup)(struct usb_serial *serial, const struct usb_device_id *id); /* * some Samsung Android phones in modem mode have the same ID * as SPH-I500, but they are ACM devices, so dont bind to them */ if (id->idVendor == SAMSUNG_VENDOR_ID && id->idProduct == SAMSUNG_SPH_I500_ID && serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM && serial->dev->descriptor.bDeviceSubClass == USB_CDC_SUBCLASS_ACM) return -ENODEV; if (serial->dev->actconfig->desc.bConfigurationValue != 1) { dev_err(&serial->dev->dev, "active config #%d != 1 ??\n", serial->dev->actconfig->desc.bConfigurationValue); return -ENODEV; } if (id->driver_info) { startup = (void *)id->driver_info; retval = startup(serial, id); } return retval; } static int visor_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds) { unsigned int vid = le16_to_cpu(serial->dev->descriptor.idVendor); int num_ports = (int)(long)(usb_get_serial_data(serial)); if (num_ports) usb_set_serial_data(serial, NULL); /* * Only swap the bulk endpoints for the Handspring devices with * interrupt in endpoints, which for now are the Treo devices. */ if (!(vid == HANDSPRING_VENDOR_ID || vid == KYOCERA_VENDOR_ID) || epds->num_interrupt_in == 0) goto out; if (epds->num_bulk_in < 2 || epds->num_interrupt_in < 2) { dev_err(&serial->interface->dev, "missing endpoints\n"); return -ENODEV; } /* * It appears that Treos and Kyoceras want to use the * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint, * so let's swap the 1st and 2nd bulk in and interrupt endpoints. * Note that swapping the bulk out endpoints would break lots of * apps that want to communicate on the second port. */ swap(epds->bulk_in[0], epds->bulk_in[1]); swap(epds->interrupt_in[0], epds->interrupt_in[1]); out: return num_ports; } static int clie_5_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds) { /* * TH55 registers 2 ports. * Communication in from the UX50/TH55 uses the first bulk-in * endpoint, while communication out to the UX50/TH55 uses the second * bulk-out endpoint. */ /* * FIXME: Should we swap the descriptors instead of using the same * bulk-out endpoint for both ports? */ epds->bulk_out[0] = epds->bulk_out[1]; return serial->type->num_ports; } static int clie_3_5_startup(struct usb_serial *serial) { struct device *dev = &serial->dev->dev; int result; u8 *data; data = kmalloc(1, GFP_KERNEL); if (!data) return -ENOMEM; /* * Note that PEG-300 series devices expect the following two calls. */ /* get the config number */ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQ_GET_CONFIGURATION, USB_DIR_IN, 0, 0, data, 1, 3000); if (result < 0) { dev_err(dev, "%s: get config number failed: %d\n", __func__, result); goto out; } if (result != 1) { dev_err(dev, "%s: get config number bad return length: %d\n", __func__, result); result = -EIO; goto out; } /* get the interface number */ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQ_GET_INTERFACE, USB_DIR_IN | USB_RECIP_INTERFACE, 0, 0, data, 1, 3000); if (result < 0) { dev_err(dev, "%s: get interface number failed: %d\n", __func__, result); goto out; } if (result != 1) { dev_err(dev, "%s: get interface number bad return length: %d\n", __func__, result); result = -EIO; goto out; } result = 0; out: kfree(data); return result; } module_usb_serial_driver(serial_drivers, id_table_combined); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL v2"); |
| 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 | // SPDX-License-Identifier: GPL-2.0 /* * Management Component Transport Protocol (MCTP) - routing * implementation. * * This is currently based on a simple routing table, with no dst cache. The * number of routes should stay fairly small, so the lookup cost is small. * * Copyright (c) 2021 Code Construct * Copyright (c) 2021 Google */ #include <linux/idr.h> #include <linux/mctp.h> #include <linux/netdevice.h> #include <linux/rtnetlink.h> #include <linux/skbuff.h> #include <net/mctp.h> #include <net/mctpdevice.h> #include <net/netlink.h> #include <net/sock.h> static int mctp_neigh_add(struct mctp_dev *mdev, mctp_eid_t eid, enum mctp_neigh_source source, size_t lladdr_len, const void *lladdr) { struct net *net = dev_net(mdev->dev); struct mctp_neigh *neigh; int rc; mutex_lock(&net->mctp.neigh_lock); if (mctp_neigh_lookup(mdev, eid, NULL) == 0) { rc = -EEXIST; goto out; } if (lladdr_len > sizeof(neigh->ha)) { rc = -EINVAL; goto out; } neigh = kzalloc(sizeof(*neigh), GFP_KERNEL); if (!neigh) { rc = -ENOMEM; goto out; } INIT_LIST_HEAD(&neigh->list); neigh->dev = mdev; mctp_dev_hold(neigh->dev); neigh->eid = eid; neigh->source = source; memcpy(neigh->ha, lladdr, lladdr_len); list_add_rcu(&neigh->list, &net->mctp.neighbours); rc = 0; out: mutex_unlock(&net->mctp.neigh_lock); return rc; } static void __mctp_neigh_free(struct rcu_head *rcu) { struct mctp_neigh *neigh = container_of(rcu, struct mctp_neigh, rcu); mctp_dev_put(neigh->dev); kfree(neigh); } /* Removes all neighbour entries referring to a device */ void mctp_neigh_remove_dev(struct mctp_dev *mdev) { struct net *net = dev_net(mdev->dev); struct mctp_neigh *neigh, *tmp; mutex_lock(&net->mctp.neigh_lock); list_for_each_entry_safe(neigh, tmp, &net->mctp.neighbours, list) { if (neigh->dev == mdev) { list_del_rcu(&neigh->list); /* TODO: immediate RTM_DELNEIGH */ call_rcu(&neigh->rcu, __mctp_neigh_free); } } mutex_unlock(&net->mctp.neigh_lock); } static int mctp_neigh_remove(struct mctp_dev *mdev, mctp_eid_t eid, enum mctp_neigh_source source) { struct net *net = dev_net(mdev->dev); struct mctp_neigh *neigh, *tmp; bool dropped = false; mutex_lock(&net->mctp.neigh_lock); list_for_each_entry_safe(neigh, tmp, &net->mctp.neighbours, list) { if (neigh->dev == mdev && neigh->eid == eid && neigh->source == source) { list_del_rcu(&neigh->list); /* TODO: immediate RTM_DELNEIGH */ call_rcu(&neigh->rcu, __mctp_neigh_free); dropped = true; } } mutex_unlock(&net->mctp.neigh_lock); return dropped ? 0 : -ENOENT; } static const struct nla_policy nd_mctp_policy[NDA_MAX + 1] = { [NDA_DST] = { .type = NLA_U8 }, [NDA_LLADDR] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, }; static int mctp_rtm_newneigh(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct net_device *dev; struct mctp_dev *mdev; struct ndmsg *ndm; struct nlattr *tb[NDA_MAX + 1]; int rc; mctp_eid_t eid; void *lladdr; int lladdr_len; rc = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, nd_mctp_policy, extack); if (rc < 0) { NL_SET_ERR_MSG(extack, "lladdr too large?"); return rc; } if (!tb[NDA_DST]) { NL_SET_ERR_MSG(extack, "Neighbour EID must be specified"); return -EINVAL; } if (!tb[NDA_LLADDR]) { NL_SET_ERR_MSG(extack, "Neighbour lladdr must be specified"); return -EINVAL; } eid = nla_get_u8(tb[NDA_DST]); if (!mctp_address_unicast(eid)) { NL_SET_ERR_MSG(extack, "Invalid neighbour EID"); return -EINVAL; } lladdr = nla_data(tb[NDA_LLADDR]); lladdr_len = nla_len(tb[NDA_LLADDR]); ndm = nlmsg_data(nlh); dev = __dev_get_by_index(net, ndm->ndm_ifindex); if (!dev) return -ENODEV; mdev = mctp_dev_get_rtnl(dev); if (!mdev) return -ENODEV; if (lladdr_len != dev->addr_len) { NL_SET_ERR_MSG(extack, "Wrong lladdr length"); return -EINVAL; } return mctp_neigh_add(mdev, eid, MCTP_NEIGH_STATIC, lladdr_len, lladdr); } static int mctp_rtm_delneigh(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct nlattr *tb[NDA_MAX + 1]; struct net_device *dev; struct mctp_dev *mdev; struct ndmsg *ndm; int rc; mctp_eid_t eid; rc = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, nd_mctp_policy, extack); if (rc < 0) { NL_SET_ERR_MSG(extack, "incorrect format"); return rc; } if (!tb[NDA_DST]) { NL_SET_ERR_MSG(extack, "Neighbour EID must be specified"); return -EINVAL; } eid = nla_get_u8(tb[NDA_DST]); ndm = nlmsg_data(nlh); dev = __dev_get_by_index(net, ndm->ndm_ifindex); if (!dev) return -ENODEV; mdev = mctp_dev_get_rtnl(dev); if (!mdev) return -ENODEV; return mctp_neigh_remove(mdev, eid, MCTP_NEIGH_STATIC); } static int mctp_fill_neigh(struct sk_buff *skb, u32 portid, u32 seq, int event, unsigned int flags, struct mctp_neigh *neigh) { struct net_device *dev = neigh->dev->dev; struct nlmsghdr *nlh; struct ndmsg *hdr; nlh = nlmsg_put(skb, portid, seq, event, sizeof(*hdr), flags); if (!nlh) return -EMSGSIZE; hdr = nlmsg_data(nlh); hdr->ndm_family = AF_MCTP; hdr->ndm_ifindex = dev->ifindex; hdr->ndm_state = 0; // TODO other state bits? if (neigh->source == MCTP_NEIGH_STATIC) hdr->ndm_state |= NUD_PERMANENT; hdr->ndm_flags = 0; hdr->ndm_type = RTN_UNICAST; // TODO: is loopback RTN_LOCAL? if (nla_put_u8(skb, NDA_DST, neigh->eid)) goto cancel; if (nla_put(skb, NDA_LLADDR, dev->addr_len, neigh->ha)) goto cancel; nlmsg_end(skb, nlh); return 0; cancel: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } static int mctp_rtm_getneigh(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); int rc, idx, req_ifindex; struct mctp_neigh *neigh; struct ndmsg *ndmsg; struct { int idx; } *cbctx = (void *)cb->ctx; ndmsg = nlmsg_data(cb->nlh); req_ifindex = ndmsg->ndm_ifindex; idx = 0; rcu_read_lock(); list_for_each_entry_rcu(neigh, &net->mctp.neighbours, list) { if (idx < cbctx->idx) goto cont; rc = 0; if (req_ifindex == 0 || req_ifindex == neigh->dev->dev->ifindex) rc = mctp_fill_neigh(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNEIGH, NLM_F_MULTI, neigh); if (rc) break; cont: idx++; } rcu_read_unlock(); cbctx->idx = idx; return skb->len; } int mctp_neigh_lookup(struct mctp_dev *mdev, mctp_eid_t eid, void *ret_hwaddr) { struct net *net = dev_net(mdev->dev); struct mctp_neigh *neigh; int rc = -EHOSTUNREACH; // TODO: or ENOENT? rcu_read_lock(); list_for_each_entry_rcu(neigh, &net->mctp.neighbours, list) { if (mdev == neigh->dev && eid == neigh->eid) { if (ret_hwaddr) memcpy(ret_hwaddr, neigh->ha, sizeof(neigh->ha)); rc = 0; break; } } rcu_read_unlock(); return rc; } /* namespace registration */ static int __net_init mctp_neigh_net_init(struct net *net) { struct netns_mctp *ns = &net->mctp; INIT_LIST_HEAD(&ns->neighbours); mutex_init(&ns->neigh_lock); return 0; } static void __net_exit mctp_neigh_net_exit(struct net *net) { struct netns_mctp *ns = &net->mctp; struct mctp_neigh *neigh; list_for_each_entry(neigh, &ns->neighbours, list) call_rcu(&neigh->rcu, __mctp_neigh_free); } /* net namespace implementation */ static struct pernet_operations mctp_net_ops = { .init = mctp_neigh_net_init, .exit = mctp_neigh_net_exit, }; static const struct rtnl_msg_handler mctp_neigh_rtnl_msg_handlers[] = { {THIS_MODULE, PF_MCTP, RTM_NEWNEIGH, mctp_rtm_newneigh, NULL, 0}, {THIS_MODULE, PF_MCTP, RTM_DELNEIGH, mctp_rtm_delneigh, NULL, 0}, {THIS_MODULE, PF_MCTP, RTM_GETNEIGH, NULL, mctp_rtm_getneigh, 0}, }; int __init mctp_neigh_init(void) { int err; err = register_pernet_subsys(&mctp_net_ops); if (err) return err; err = rtnl_register_many(mctp_neigh_rtnl_msg_handlers); if (err) unregister_pernet_subsys(&mctp_net_ops); return err; } void mctp_neigh_exit(void) { rtnl_unregister_many(mctp_neigh_rtnl_msg_handlers); unregister_pernet_subsys(&mctp_net_ops); } |
| 4 4 4 4 4 4 3 3 3 3 1 1 1 1 1 1 1 1 1 1 4 4 3 3 4 4 3 2 2 1 4 4 4 4 4 4 4 4 4 4 4 4 4 7 4 7 6 5 4 4 4 4 4 4 4 4 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 | // SPDX-License-Identifier: GPL-2.0-only /* * Driver for the VoIP USB phones with CM109 chipsets. * * Copyright (C) 2007 - 2008 Alfred E. Heggestad <aeh@db.org> */ /* * Tested devices: * - Komunikate KIP1000 * - Genius G-talk * - Allied-Telesis Corega USBPH01 * - ... * * This driver is based on the yealink.c driver * * Thanks to: * - Authors of yealink.c * - Thomas Reitmayr * - Oliver Neukum for good review comments and code * - Shaun Jackman <sjackman@gmail.com> for Genius G-talk keymap * - Dmitry Torokhov for valuable input and review * * Todo: * - Read/write EEPROM */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/rwsem.h> #include <linux/usb/input.h> #define DRIVER_VERSION "20080805" #define DRIVER_AUTHOR "Alfred E. Heggestad" #define DRIVER_DESC "CM109 phone driver" static char *phone = "kip1000"; module_param(phone, charp, S_IRUSR); MODULE_PARM_DESC(phone, "Phone name {kip1000, gtalk, usbph01, atcom}"); enum { /* HID Registers */ HID_IR0 = 0x00, /* Record/Playback-mute button, Volume up/down */ HID_IR1 = 0x01, /* GPI, generic registers or EEPROM_DATA0 */ HID_IR2 = 0x02, /* Generic registers or EEPROM_DATA1 */ HID_IR3 = 0x03, /* Generic registers or EEPROM_CTRL */ HID_OR0 = 0x00, /* Mapping control, buzzer, SPDIF (offset 0x04) */ HID_OR1 = 0x01, /* GPO - General Purpose Output */ HID_OR2 = 0x02, /* Set GPIO to input/output mode */ HID_OR3 = 0x03, /* SPDIF status channel or EEPROM_CTRL */ /* HID_IR0 */ RECORD_MUTE = 1 << 3, PLAYBACK_MUTE = 1 << 2, VOLUME_DOWN = 1 << 1, VOLUME_UP = 1 << 0, /* HID_OR0 */ /* bits 7-6 0: HID_OR1-2 are used for GPO; HID_OR0, 3 are used for buzzer and SPDIF 1: HID_OR0-3 are used as generic HID registers 2: Values written to HID_OR0-3 are also mapped to MCU_CTRL, EEPROM_DATA0-1, EEPROM_CTRL (see Note) 3: Reserved */ HID_OR_GPO_BUZ_SPDIF = 0 << 6, HID_OR_GENERIC_HID_REG = 1 << 6, HID_OR_MAP_MCU_EEPROM = 2 << 6, BUZZER_ON = 1 << 5, /* up to 256 normal keys, up to 15 special key combinations */ KEYMAP_SIZE = 256 + 15, }; /* CM109 protocol packet */ struct cm109_ctl_packet { u8 byte[4]; } __attribute__ ((packed)); enum { USB_PKT_LEN = sizeof(struct cm109_ctl_packet) }; /* CM109 device structure */ struct cm109_dev { struct input_dev *idev; /* input device */ struct usb_device *udev; /* usb device */ struct usb_interface *intf; /* irq input channel */ struct cm109_ctl_packet *irq_data; dma_addr_t irq_dma; struct urb *urb_irq; /* control output channel */ struct cm109_ctl_packet *ctl_data; dma_addr_t ctl_dma; struct usb_ctrlrequest *ctl_req; struct urb *urb_ctl; /* * The 3 bitfields below are protected by ctl_submit_lock. * They have to be separate since they are accessed from IRQ * context. */ unsigned irq_urb_pending:1; /* irq_urb is in flight */ unsigned ctl_urb_pending:1; /* ctl_urb is in flight */ unsigned buzzer_pending:1; /* need to issue buzz command */ spinlock_t ctl_submit_lock; unsigned char buzzer_state; /* on/off */ /* flags */ unsigned open:1; unsigned resetting:1; unsigned shutdown:1; /* This mutex protects writes to the above flags */ struct mutex pm_mutex; unsigned short keymap[KEYMAP_SIZE]; char phys[64]; /* physical device path */ int key_code; /* last reported key */ int keybit; /* 0=new scan 1,2,4,8=scan columns */ u8 gpi; /* Cached value of GPI (high nibble) */ }; /****************************************************************************** * CM109 key interface *****************************************************************************/ static unsigned short special_keymap(int code) { if (code > 0xff) { switch (code - 0xff) { case RECORD_MUTE: return KEY_MICMUTE; case PLAYBACK_MUTE: return KEY_MUTE; case VOLUME_DOWN: return KEY_VOLUMEDOWN; case VOLUME_UP: return KEY_VOLUMEUP; } } return KEY_RESERVED; } /* Map device buttons to internal key events. * * The "up" and "down" keys, are symbolised by arrows on the button. * The "pickup" and "hangup" keys are symbolised by a green and red phone * on the button. Komunikate KIP1000 Keyboard Matrix -> -- 1 -- 2 -- 3 --> GPI pin 4 (0x10) | | | | <- -- 4 -- 5 -- 6 --> GPI pin 5 (0x20) | | | | END - 7 -- 8 -- 9 --> GPI pin 6 (0x40) | | | | OK -- * -- 0 -- # --> GPI pin 7 (0x80) | | | | /|\ /|\ /|\ /|\ | | | | GPO pin: 3 2 1 0 0x8 0x4 0x2 0x1 */ static unsigned short keymap_kip1000(int scancode) { switch (scancode) { /* phone key: */ case 0x82: return KEY_NUMERIC_0; /* 0 */ case 0x14: return KEY_NUMERIC_1; /* 1 */ case 0x12: return KEY_NUMERIC_2; /* 2 */ case 0x11: return KEY_NUMERIC_3; /* 3 */ case 0x24: return KEY_NUMERIC_4; /* 4 */ case 0x22: return KEY_NUMERIC_5; /* 5 */ case 0x21: return KEY_NUMERIC_6; /* 6 */ case 0x44: return KEY_NUMERIC_7; /* 7 */ case 0x42: return KEY_NUMERIC_8; /* 8 */ case 0x41: return KEY_NUMERIC_9; /* 9 */ case 0x81: return KEY_NUMERIC_POUND; /* # */ case 0x84: return KEY_NUMERIC_STAR; /* * */ case 0x88: return KEY_ENTER; /* pickup */ case 0x48: return KEY_ESC; /* hangup */ case 0x28: return KEY_LEFT; /* IN */ case 0x18: return KEY_RIGHT; /* OUT */ default: return special_keymap(scancode); } } /* Contributed by Shaun Jackman <sjackman@gmail.com> Genius G-Talk keyboard matrix 0 1 2 3 4: 0 4 8 Talk 5: 1 5 9 End 6: 2 6 # Up 7: 3 7 * Down */ static unsigned short keymap_gtalk(int scancode) { switch (scancode) { case 0x11: return KEY_NUMERIC_0; case 0x21: return KEY_NUMERIC_1; case 0x41: return KEY_NUMERIC_2; case 0x81: return KEY_NUMERIC_3; case 0x12: return KEY_NUMERIC_4; case 0x22: return KEY_NUMERIC_5; case 0x42: return KEY_NUMERIC_6; case 0x82: return KEY_NUMERIC_7; case 0x14: return KEY_NUMERIC_8; case 0x24: return KEY_NUMERIC_9; case 0x44: return KEY_NUMERIC_POUND; /* # */ case 0x84: return KEY_NUMERIC_STAR; /* * */ case 0x18: return KEY_ENTER; /* Talk (green handset) */ case 0x28: return KEY_ESC; /* End (red handset) */ case 0x48: return KEY_UP; /* Menu up (rocker switch) */ case 0x88: return KEY_DOWN; /* Menu down (rocker switch) */ default: return special_keymap(scancode); } } /* * Keymap for Allied-Telesis Corega USBPH01 * http://www.alliedtelesis-corega.com/2/1344/1437/1360/chprd.html * * Contributed by july@nat.bg */ static unsigned short keymap_usbph01(int scancode) { switch (scancode) { case 0x11: return KEY_NUMERIC_0; /* 0 */ case 0x21: return KEY_NUMERIC_1; /* 1 */ case 0x41: return KEY_NUMERIC_2; /* 2 */ case 0x81: return KEY_NUMERIC_3; /* 3 */ case 0x12: return KEY_NUMERIC_4; /* 4 */ case 0x22: return KEY_NUMERIC_5; /* 5 */ case 0x42: return KEY_NUMERIC_6; /* 6 */ case 0x82: return KEY_NUMERIC_7; /* 7 */ case 0x14: return KEY_NUMERIC_8; /* 8 */ case 0x24: return KEY_NUMERIC_9; /* 9 */ case 0x44: return KEY_NUMERIC_POUND; /* # */ case 0x84: return KEY_NUMERIC_STAR; /* * */ case 0x18: return KEY_ENTER; /* pickup */ case 0x28: return KEY_ESC; /* hangup */ case 0x48: return KEY_LEFT; /* IN */ case 0x88: return KEY_RIGHT; /* OUT */ default: return special_keymap(scancode); } } /* * Keymap for ATCom AU-100 * http://www.atcom.cn/products.html * http://www.packetizer.com/products/au100/ * http://www.voip-info.org/wiki/view/AU-100 * * Contributed by daniel@gimpelevich.san-francisco.ca.us */ static unsigned short keymap_atcom(int scancode) { switch (scancode) { /* phone key: */ case 0x82: return KEY_NUMERIC_0; /* 0 */ case 0x11: return KEY_NUMERIC_1; /* 1 */ case 0x12: return KEY_NUMERIC_2; /* 2 */ case 0x14: return KEY_NUMERIC_3; /* 3 */ case 0x21: return KEY_NUMERIC_4; /* 4 */ case 0x22: return KEY_NUMERIC_5; /* 5 */ case 0x24: return KEY_NUMERIC_6; /* 6 */ case 0x41: return KEY_NUMERIC_7; /* 7 */ case 0x42: return KEY_NUMERIC_8; /* 8 */ case 0x44: return KEY_NUMERIC_9; /* 9 */ case 0x84: return KEY_NUMERIC_POUND; /* # */ case 0x81: return KEY_NUMERIC_STAR; /* * */ case 0x18: return KEY_ENTER; /* pickup */ case 0x28: return KEY_ESC; /* hangup */ case 0x48: return KEY_LEFT; /* left arrow */ case 0x88: return KEY_RIGHT; /* right arrow */ default: return special_keymap(scancode); } } static unsigned short (*keymap)(int) = keymap_kip1000; /* * Completes a request by converting the data into events for the * input subsystem. */ static void report_key(struct cm109_dev *dev, int key) { struct input_dev *idev = dev->idev; if (dev->key_code >= 0) { /* old key up */ input_report_key(idev, dev->key_code, 0); } dev->key_code = key; if (key >= 0) { /* new valid key */ input_report_key(idev, key, 1); } input_sync(idev); } /* * Converts data of special key presses (volume, mute) into events * for the input subsystem, sends press-n-release for mute keys. */ static void cm109_report_special(struct cm109_dev *dev) { static const u8 autorelease = RECORD_MUTE | PLAYBACK_MUTE; struct input_dev *idev = dev->idev; u8 data = dev->irq_data->byte[HID_IR0]; unsigned short keycode; int i; for (i = 0; i < 4; i++) { keycode = dev->keymap[0xff + BIT(i)]; if (keycode == KEY_RESERVED) continue; input_report_key(idev, keycode, data & BIT(i)); if (data & autorelease & BIT(i)) { input_sync(idev); input_report_key(idev, keycode, 0); } } input_sync(idev); } /****************************************************************************** * CM109 usb communication interface *****************************************************************************/ static void cm109_submit_buzz_toggle(struct cm109_dev *dev) { int error; if (dev->buzzer_state) dev->ctl_data->byte[HID_OR0] |= BUZZER_ON; else dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON; error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC); if (error) dev_err(&dev->intf->dev, "%s: usb_submit_urb (urb_ctl) failed %d\n", __func__, error); } static void cm109_submit_ctl(struct cm109_dev *dev) { int error; guard(spinlock_irqsave)(&dev->ctl_submit_lock); dev->irq_urb_pending = 0; if (unlikely(dev->shutdown)) return; if (dev->buzzer_state) dev->ctl_data->byte[HID_OR0] |= BUZZER_ON; else dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON; dev->ctl_data->byte[HID_OR1] = dev->keybit; dev->ctl_data->byte[HID_OR2] = dev->keybit; dev->buzzer_pending = 0; dev->ctl_urb_pending = 1; error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC); if (error) dev_err(&dev->intf->dev, "%s: usb_submit_urb (urb_ctl) failed %d\n", __func__, error); } /* * IRQ handler */ static void cm109_urb_irq_callback(struct urb *urb) { struct cm109_dev *dev = urb->context; const int status = urb->status; dev_dbg(&dev->intf->dev, "### URB IRQ: [0x%02x 0x%02x 0x%02x 0x%02x] keybit=0x%02x\n", dev->irq_data->byte[0], dev->irq_data->byte[1], dev->irq_data->byte[2], dev->irq_data->byte[3], dev->keybit); if (status) { if (status == -ESHUTDOWN) return; dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n", __func__, status); goto out; } /* Special keys */ cm109_report_special(dev); /* Scan key column */ if (dev->keybit == 0xf) { /* Any changes ? */ if ((dev->gpi & 0xf0) == (dev->irq_data->byte[HID_IR1] & 0xf0)) goto out; dev->gpi = dev->irq_data->byte[HID_IR1] & 0xf0; dev->keybit = 0x1; } else { report_key(dev, dev->keymap[dev->irq_data->byte[HID_IR1]]); dev->keybit <<= 1; if (dev->keybit > 0x8) dev->keybit = 0xf; } out: cm109_submit_ctl(dev); } static void cm109_urb_ctl_callback(struct urb *urb) { struct cm109_dev *dev = urb->context; const int status = urb->status; int error; dev_dbg(&dev->intf->dev, "### URB CTL: [0x%02x 0x%02x 0x%02x 0x%02x]\n", dev->ctl_data->byte[0], dev->ctl_data->byte[1], dev->ctl_data->byte[2], dev->ctl_data->byte[3]); if (status) { if (status == -ESHUTDOWN) return; dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n", __func__, status); } guard(spinlock_irqsave)(&dev->ctl_submit_lock); dev->ctl_urb_pending = 0; if (unlikely(dev->shutdown)) return; if (dev->buzzer_pending || status) { dev->buzzer_pending = 0; dev->ctl_urb_pending = 1; cm109_submit_buzz_toggle(dev); } else if (likely(!dev->irq_urb_pending)) { /* ask for key data */ dev->irq_urb_pending = 1; error = usb_submit_urb(dev->urb_irq, GFP_ATOMIC); if (error) dev_err(&dev->intf->dev, "%s: usb_submit_urb (urb_irq) failed %d\n", __func__, error); } } static void cm109_toggle_buzzer_async(struct cm109_dev *dev) { guard(spinlock_irqsave)(&dev->ctl_submit_lock); if (dev->ctl_urb_pending) { /* URB completion will resubmit */ dev->buzzer_pending = 1; } else { dev->ctl_urb_pending = 1; cm109_submit_buzz_toggle(dev); } } static void cm109_toggle_buzzer_sync(struct cm109_dev *dev, int on) { int error; if (on) dev->ctl_data->byte[HID_OR0] |= BUZZER_ON; else dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON; error = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), dev->ctl_req->bRequest, dev->ctl_req->bRequestType, le16_to_cpu(dev->ctl_req->wValue), le16_to_cpu(dev->ctl_req->wIndex), dev->ctl_data, USB_PKT_LEN, USB_CTRL_SET_TIMEOUT); if (error < 0 && error != -EINTR) dev_err(&dev->intf->dev, "%s: usb_control_msg() failed %d\n", __func__, error); } static void cm109_stop_traffic(struct cm109_dev *dev) { dev->shutdown = 1; /* * Make sure other CPUs see this */ smp_wmb(); usb_kill_urb(dev->urb_ctl); usb_kill_urb(dev->urb_irq); cm109_toggle_buzzer_sync(dev, 0); dev->shutdown = 0; smp_wmb(); } static void cm109_restore_state(struct cm109_dev *dev) { if (dev->open) { /* * Restore buzzer state. * This will also kick regular URB submission */ cm109_toggle_buzzer_async(dev); } } /****************************************************************************** * input event interface *****************************************************************************/ static int cm109_input_open(struct input_dev *idev) { struct cm109_dev *dev = input_get_drvdata(idev); int error; error = usb_autopm_get_interface(dev->intf); if (error < 0) { dev_err(&idev->dev, "%s - cannot autoresume, result %d\n", __func__, error); return error; } scoped_guard(mutex, &dev->pm_mutex) { dev->buzzer_state = 0; dev->key_code = -1; /* no keys pressed */ dev->keybit = 0xf; /* issue INIT */ dev->ctl_data->byte[HID_OR0] = HID_OR_GPO_BUZ_SPDIF; dev->ctl_data->byte[HID_OR1] = dev->keybit; dev->ctl_data->byte[HID_OR2] = dev->keybit; dev->ctl_data->byte[HID_OR3] = 0x00; dev->ctl_urb_pending = 1; error = usb_submit_urb(dev->urb_ctl, GFP_KERNEL); if (!error) { dev->open = 1; return 0; } } dev->ctl_urb_pending = 0; usb_autopm_put_interface(dev->intf); dev_err(&dev->intf->dev, "%s: usb_submit_urb (urb_ctl) failed %d\n", __func__, error); return error; } static void cm109_input_close(struct input_dev *idev) { struct cm109_dev *dev = input_get_drvdata(idev); scoped_guard(mutex, &dev->pm_mutex) { /* * Once we are here event delivery is stopped so we * don't need to worry about someone starting buzzer * again */ cm109_stop_traffic(dev); dev->open = 0; } usb_autopm_put_interface(dev->intf); } static int cm109_input_ev(struct input_dev *idev, unsigned int type, unsigned int code, int value) { struct cm109_dev *dev = input_get_drvdata(idev); dev_dbg(&dev->intf->dev, "input_ev: type=%u code=%u value=%d\n", type, code, value); if (type != EV_SND) return -EINVAL; switch (code) { case SND_TONE: case SND_BELL: dev->buzzer_state = !!value; if (!dev->resetting) cm109_toggle_buzzer_async(dev); return 0; default: return -EINVAL; } } /****************************************************************************** * Linux interface and usb initialisation *****************************************************************************/ struct driver_info { char *name; }; static const struct driver_info info_cm109 = { .name = "CM109 USB driver", }; enum { VENDOR_ID = 0x0d8c, /* C-Media Electronics */ PRODUCT_ID_CM109 = 0x000e, /* CM109 defines range 0x0008 - 0x000f */ }; /* table of devices that work with this driver */ static const struct usb_device_id cm109_usb_table[] = { { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, .idVendor = VENDOR_ID, .idProduct = PRODUCT_ID_CM109, .bInterfaceClass = USB_CLASS_HID, .bInterfaceSubClass = 0, .bInterfaceProtocol = 0, .driver_info = (kernel_ulong_t) &info_cm109 }, /* you can add more devices here with product ID 0x0008 - 0x000f */ { } }; static void cm109_usb_cleanup(struct cm109_dev *dev) { kfree(dev->ctl_req); usb_free_coherent(dev->udev, USB_PKT_LEN, dev->ctl_data, dev->ctl_dma); usb_free_coherent(dev->udev, USB_PKT_LEN, dev->irq_data, dev->irq_dma); usb_free_urb(dev->urb_irq); /* parameter validation in core/urb */ usb_free_urb(dev->urb_ctl); /* parameter validation in core/urb */ kfree(dev); } static void cm109_usb_disconnect(struct usb_interface *interface) { struct cm109_dev *dev = usb_get_intfdata(interface); usb_set_intfdata(interface, NULL); input_unregister_device(dev->idev); cm109_usb_cleanup(dev); } static int cm109_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *udev = interface_to_usbdev(intf); struct driver_info *nfo = (struct driver_info *)id->driver_info; struct usb_host_interface *interface; struct usb_endpoint_descriptor *endpoint; struct cm109_dev *dev; struct input_dev *input_dev = NULL; int ret, pipe, i; int error = -ENOMEM; interface = intf->cur_altsetting; if (interface->desc.bNumEndpoints < 1) return -ENODEV; endpoint = &interface->endpoint[0].desc; if (!usb_endpoint_is_int_in(endpoint)) return -ENODEV; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; spin_lock_init(&dev->ctl_submit_lock); mutex_init(&dev->pm_mutex); dev->udev = udev; dev->intf = intf; dev->idev = input_dev = input_allocate_device(); if (!input_dev) goto err_out; /* allocate usb buffers */ dev->irq_data = usb_alloc_coherent(udev, USB_PKT_LEN, GFP_KERNEL, &dev->irq_dma); if (!dev->irq_data) goto err_out; dev->ctl_data = usb_alloc_coherent(udev, USB_PKT_LEN, GFP_KERNEL, &dev->ctl_dma); if (!dev->ctl_data) goto err_out; dev->ctl_req = kmalloc(sizeof(*(dev->ctl_req)), GFP_KERNEL); if (!dev->ctl_req) goto err_out; /* allocate urb structures */ dev->urb_irq = usb_alloc_urb(0, GFP_KERNEL); if (!dev->urb_irq) goto err_out; dev->urb_ctl = usb_alloc_urb(0, GFP_KERNEL); if (!dev->urb_ctl) goto err_out; /* get a handle to the interrupt data pipe */ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); ret = usb_maxpacket(udev, pipe); if (ret != USB_PKT_LEN) dev_err(&intf->dev, "invalid payload size %d, expected %d\n", ret, USB_PKT_LEN); /* initialise irq urb */ usb_fill_int_urb(dev->urb_irq, udev, pipe, dev->irq_data, USB_PKT_LEN, cm109_urb_irq_callback, dev, endpoint->bInterval); dev->urb_irq->transfer_dma = dev->irq_dma; dev->urb_irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; dev->urb_irq->dev = udev; /* initialise ctl urb */ dev->ctl_req->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT; dev->ctl_req->bRequest = USB_REQ_SET_CONFIGURATION; dev->ctl_req->wValue = cpu_to_le16(0x200); dev->ctl_req->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber); dev->ctl_req->wLength = cpu_to_le16(USB_PKT_LEN); usb_fill_control_urb(dev->urb_ctl, udev, usb_sndctrlpipe(udev, 0), (void *)dev->ctl_req, dev->ctl_data, USB_PKT_LEN, cm109_urb_ctl_callback, dev); dev->urb_ctl->transfer_dma = dev->ctl_dma; dev->urb_ctl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; dev->urb_ctl->dev = udev; /* find out the physical bus location */ usb_make_path(udev, dev->phys, sizeof(dev->phys)); strlcat(dev->phys, "/input0", sizeof(dev->phys)); /* register settings for the input device */ input_dev->name = nfo->name; input_dev->phys = dev->phys; usb_to_input_id(udev, &input_dev->id); input_dev->dev.parent = &intf->dev; input_set_drvdata(input_dev, dev); input_dev->open = cm109_input_open; input_dev->close = cm109_input_close; input_dev->event = cm109_input_ev; input_dev->keycode = dev->keymap; input_dev->keycodesize = sizeof(unsigned char); input_dev->keycodemax = ARRAY_SIZE(dev->keymap); input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_SND); input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); /* register available key events */ for (i = 0; i < KEYMAP_SIZE; i++) { unsigned short k = keymap(i); dev->keymap[i] = k; __set_bit(k, input_dev->keybit); } __clear_bit(KEY_RESERVED, input_dev->keybit); error = input_register_device(dev->idev); if (error) goto err_out; usb_set_intfdata(intf, dev); return 0; err_out: input_free_device(input_dev); cm109_usb_cleanup(dev); return error; } static int cm109_usb_suspend(struct usb_interface *intf, pm_message_t message) { struct cm109_dev *dev = usb_get_intfdata(intf); dev_info(&intf->dev, "cm109: usb_suspend (event=%d)\n", message.event); guard(mutex)(&dev->pm_mutex); cm109_stop_traffic(dev); return 0; } static int cm109_usb_resume(struct usb_interface *intf) { struct cm109_dev *dev = usb_get_intfdata(intf); dev_info(&intf->dev, "cm109: usb_resume\n"); guard(mutex)(&dev->pm_mutex); cm109_restore_state(dev); return 0; } static int cm109_usb_pre_reset(struct usb_interface *intf) { struct cm109_dev *dev = usb_get_intfdata(intf); mutex_lock(&dev->pm_mutex); /* * Make sure input events don't try to toggle buzzer * while we are resetting */ dev->resetting = 1; smp_wmb(); cm109_stop_traffic(dev); return 0; } static int cm109_usb_post_reset(struct usb_interface *intf) { struct cm109_dev *dev = usb_get_intfdata(intf); dev->resetting = 0; smp_wmb(); cm109_restore_state(dev); mutex_unlock(&dev->pm_mutex); return 0; } static struct usb_driver cm109_driver = { .name = "cm109", .probe = cm109_usb_probe, .disconnect = cm109_usb_disconnect, .suspend = cm109_usb_suspend, .resume = cm109_usb_resume, .reset_resume = cm109_usb_resume, .pre_reset = cm109_usb_pre_reset, .post_reset = cm109_usb_post_reset, .id_table = cm109_usb_table, .supports_autosuspend = 1, }; static int __init cm109_select_keymap(void) { /* Load the phone keymap */ if (!strcasecmp(phone, "kip1000")) { keymap = keymap_kip1000; printk(KERN_INFO KBUILD_MODNAME ": " "Keymap for Komunikate KIP1000 phone loaded\n"); } else if (!strcasecmp(phone, "gtalk")) { keymap = keymap_gtalk; printk(KERN_INFO KBUILD_MODNAME ": " "Keymap for Genius G-talk phone loaded\n"); } else if (!strcasecmp(phone, "usbph01")) { keymap = keymap_usbph01; printk(KERN_INFO KBUILD_MODNAME ": " "Keymap for Allied-Telesis Corega USBPH01 phone loaded\n"); } else if (!strcasecmp(phone, "atcom")) { keymap = keymap_atcom; printk(KERN_INFO KBUILD_MODNAME ": " "Keymap for ATCom AU-100 phone loaded\n"); } else { printk(KERN_ERR KBUILD_MODNAME ": " "Unsupported phone: %s\n", phone); return -EINVAL; } return 0; } static int __init cm109_init(void) { int err; err = cm109_select_keymap(); if (err) return err; err = usb_register(&cm109_driver); if (err) return err; printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC ": " DRIVER_VERSION " (C) " DRIVER_AUTHOR "\n"); return 0; } static void __exit cm109_exit(void) { usb_deregister(&cm109_driver); } module_init(cm109_init); module_exit(cm109_exit); MODULE_DEVICE_TABLE(usb, cm109_usb_table); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); |
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 | /* SPDX-License-Identifier: GPL-2.0 */ /* File: linux/posix_acl.h (C) 2002 Andreas Gruenbacher, <a.gruenbacher@computer.org> */ #ifndef __LINUX_POSIX_ACL_H #define __LINUX_POSIX_ACL_H #include <linux/bug.h> #include <linux/slab.h> #include <linux/rcupdate.h> #include <linux/refcount.h> #include <uapi/linux/posix_acl.h> struct user_namespace; struct posix_acl_entry { short e_tag; unsigned short e_perm; union { kuid_t e_uid; kgid_t e_gid; }; }; struct posix_acl { /* New members MUST be added within the struct_group() macro below. */ struct_group_tagged(posix_acl_hdr, hdr, refcount_t a_refcount; unsigned int a_count; struct rcu_head a_rcu; ); struct posix_acl_entry a_entries[] __counted_by(a_count); }; static_assert(offsetof(struct posix_acl, a_entries) == sizeof(struct posix_acl_hdr), "struct member likely outside of struct_group_tagged()"); #define FOREACH_ACL_ENTRY(pa, acl, pe) \ for(pa=(acl)->a_entries, pe=pa+(acl)->a_count; pa<pe; pa++) /* * Duplicate an ACL handle. */ static inline struct posix_acl * posix_acl_dup(struct posix_acl *acl) { if (acl) refcount_inc(&acl->a_refcount); return acl; } /* * Free an ACL handle. */ static inline void posix_acl_release(struct posix_acl *acl) { if (acl && refcount_dec_and_test(&acl->a_refcount)) kfree_rcu(acl, a_rcu); } /* posix_acl.c */ extern void posix_acl_init(struct posix_acl *, int); extern struct posix_acl *posix_acl_alloc(unsigned int count, gfp_t flags); extern struct posix_acl *posix_acl_from_mode(umode_t, gfp_t); extern int posix_acl_equiv_mode(const struct posix_acl *, umode_t *); extern int __posix_acl_create(struct posix_acl **, gfp_t, umode_t *); extern int __posix_acl_chmod(struct posix_acl **, gfp_t, umode_t); extern struct posix_acl *get_posix_acl(struct inode *, int); int set_posix_acl(struct mnt_idmap *, struct dentry *, int, struct posix_acl *); struct posix_acl *get_cached_acl_rcu(struct inode *inode, int type); struct posix_acl *posix_acl_clone(const struct posix_acl *acl, gfp_t flags); #ifdef CONFIG_FS_POSIX_ACL int posix_acl_chmod(struct mnt_idmap *, struct dentry *, umode_t); extern int posix_acl_create(struct inode *, umode_t *, struct posix_acl **, struct posix_acl **); int posix_acl_update_mode(struct mnt_idmap *, struct inode *, umode_t *, struct posix_acl **); int simple_set_acl(struct mnt_idmap *, struct dentry *, struct posix_acl *, int); extern int simple_acl_create(struct inode *, struct inode *); struct posix_acl *get_cached_acl(struct inode *inode, int type); void set_cached_acl(struct inode *inode, int type, struct posix_acl *acl); void forget_cached_acl(struct inode *inode, int type); void forget_all_cached_acls(struct inode *inode); int posix_acl_valid(struct user_namespace *, const struct posix_acl *); int posix_acl_permission(struct mnt_idmap *, struct inode *, const struct posix_acl *, int); static inline void cache_no_acl(struct inode *inode) { inode->i_acl = NULL; inode->i_default_acl = NULL; } int vfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name, struct posix_acl *kacl); struct posix_acl *vfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name); int vfs_remove_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name); int posix_acl_listxattr(struct inode *inode, char **buffer, ssize_t *remaining_size); #else static inline int posix_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry, umode_t mode) { return 0; } #define simple_set_acl NULL static inline int simple_acl_create(struct inode *dir, struct inode *inode) { return 0; } static inline void cache_no_acl(struct inode *inode) { } static inline int posix_acl_create(struct inode *inode, umode_t *mode, struct posix_acl **default_acl, struct posix_acl **acl) { *default_acl = *acl = NULL; return 0; } static inline void forget_all_cached_acls(struct inode *inode) { } static inline int vfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *name, struct posix_acl *acl) { return -EOPNOTSUPP; } static inline struct posix_acl *vfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name) { return ERR_PTR(-EOPNOTSUPP); } static inline int vfs_remove_acl(struct mnt_idmap *idmap, struct dentry *dentry, const char *acl_name) { return -EOPNOTSUPP; } static inline int posix_acl_listxattr(struct inode *inode, char **buffer, ssize_t *remaining_size) { return 0; } #endif /* CONFIG_FS_POSIX_ACL */ struct posix_acl *get_inode_acl(struct inode *inode, int type); #endif /* __LINUX_POSIX_ACL_H */ |
| 138 | 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> |
| 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 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* ZD1211 USB-WLAN driver for Linux * * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de> * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org> */ #ifndef _ZD_MAC_H #define _ZD_MAC_H #include <linux/kernel.h> #include <net/mac80211.h> #include "zd_chip.h" struct zd_ctrlset { u8 modulation; __le16 tx_length; u8 control; /* stores only the difference to tx_length on ZD1211B */ __le16 packet_length; __le16 current_length; u8 service; __le16 next_frame_length; } __packed; #define ZD_CS_RESERVED_SIZE 25 /* The field modulation of struct zd_ctrlset controls the bit rate, the use * of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or * 802.11g in OFDM mode. * * The term zd-rate is used for the combination of the modulation type flag * and the "pure" rate value. */ #define ZD_PURE_RATE_MASK 0x0f #define ZD_MODULATION_TYPE_MASK 0x10 #define ZD_RATE_MASK (ZD_PURE_RATE_MASK|ZD_MODULATION_TYPE_MASK) #define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK) #define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK) #define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK) /* The two possible modulation types. Notify that 802.11b doesn't use the CCK * codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain * consistent with uses the term at other places. */ #define ZD_CCK 0x00 #define ZD_OFDM 0x10 /* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates. * For OFDM the PLCP rate encodings are used. We combine these "pure" rates * with the modulation type flag and call the resulting values zd-rates. */ #define ZD_CCK_RATE_1M (ZD_CCK|0x00) #define ZD_CCK_RATE_2M (ZD_CCK|0x01) #define ZD_CCK_RATE_5_5M (ZD_CCK|0x02) #define ZD_CCK_RATE_11M (ZD_CCK|0x03) #define ZD_OFDM_RATE_6M (ZD_OFDM|ZD_OFDM_PLCP_RATE_6M) #define ZD_OFDM_RATE_9M (ZD_OFDM|ZD_OFDM_PLCP_RATE_9M) #define ZD_OFDM_RATE_12M (ZD_OFDM|ZD_OFDM_PLCP_RATE_12M) #define ZD_OFDM_RATE_18M (ZD_OFDM|ZD_OFDM_PLCP_RATE_18M) #define ZD_OFDM_RATE_24M (ZD_OFDM|ZD_OFDM_PLCP_RATE_24M) #define ZD_OFDM_RATE_36M (ZD_OFDM|ZD_OFDM_PLCP_RATE_36M) #define ZD_OFDM_RATE_48M (ZD_OFDM|ZD_OFDM_PLCP_RATE_48M) #define ZD_OFDM_RATE_54M (ZD_OFDM|ZD_OFDM_PLCP_RATE_54M) /* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK * mode or the 802.11a/802.11g selection in OFDM mode. */ #define ZD_CCK_PREA_LONG 0x00 #define ZD_CCK_PREA_SHORT 0x20 #define ZD_OFDM_MODE_11G 0x00 #define ZD_OFDM_MODE_11A 0x20 /* zd_ctrlset control field */ #define ZD_CS_NEED_RANDOM_BACKOFF 0x01 #define ZD_CS_NO_ACK 0x02 #define ZD_CS_FRAME_TYPE_MASK 0x0c #define ZD_CS_DATA_FRAME 0x00 #define ZD_CS_PS_POLL_FRAME 0x04 #define ZD_CS_MANAGEMENT_FRAME 0x08 #define ZD_CS_NO_SEQUENCE_CTL_FRAME 0x0c #define ZD_CS_WAKE_DESTINATION 0x10 #define ZD_CS_RTS 0x20 #define ZD_CS_ENCRYPT 0x40 #define ZD_CS_SELF_CTS 0x80 /* Incoming frames are prepended by a PLCP header */ #define ZD_PLCP_HEADER_SIZE 5 struct rx_length_info { __le16 length[3]; __le16 tag; } __packed; #define RX_LENGTH_INFO_TAG 0x697e struct rx_status { u8 signal_quality_cck; /* rssi */ u8 signal_strength; u8 signal_quality_ofdm; u8 decryption_type; u8 frame_status; } __packed; /* rx_status field decryption_type */ #define ZD_RX_NO_WEP 0 #define ZD_RX_WEP64 1 #define ZD_RX_TKIP 2 #define ZD_RX_AES 4 #define ZD_RX_WEP128 5 #define ZD_RX_WEP256 6 /* rx_status field frame_status */ #define ZD_RX_FRAME_MODULATION_MASK 0x01 #define ZD_RX_CCK 0x00 #define ZD_RX_OFDM 0x01 #define ZD_RX_TIMEOUT_ERROR 0x02 #define ZD_RX_FIFO_OVERRUN_ERROR 0x04 #define ZD_RX_DECRYPTION_ERROR 0x08 #define ZD_RX_CRC32_ERROR 0x10 #define ZD_RX_NO_ADDR1_MATCH_ERROR 0x20 #define ZD_RX_CRC16_ERROR 0x40 #define ZD_RX_ERROR 0x80 struct tx_retry_rate { int count; /* number of valid element in rate[] array */ int rate[10]; /* retry rates, described by an index in zd_rates[] */ }; struct tx_status { u8 type; /* must always be 0x01 : USB_INT_TYPE */ u8 id; /* must always be 0xa0 : USB_INT_ID_RETRY_FAILED */ u8 rate; u8 pad; u8 mac[ETH_ALEN]; u8 retry; u8 failure; } __packed; enum mac_flags { MAC_FIXED_CHANNEL = 0x01, }; struct housekeeping { struct delayed_work link_led_work; }; struct beacon { struct delayed_work watchdog_work; struct sk_buff *cur_beacon; unsigned long last_update; u16 interval; u8 period; }; enum zd_device_flags { ZD_DEVICE_RUNNING, }; #define ZD_MAC_STATS_BUFFER_SIZE 16 #define ZD_MAC_MAX_ACK_WAITERS 50 struct zd_mac { struct zd_chip chip; spinlock_t lock; spinlock_t intr_lock; struct ieee80211_hw *hw; struct ieee80211_vif *vif; struct housekeeping housekeeping; struct beacon beacon; struct work_struct set_rts_cts_work; struct work_struct process_intr; struct zd_mc_hash multicast_hash; u8 intr_buffer[USB_MAX_EP_INT_BUFFER]; u8 regdomain; u8 default_regdomain; u8 channel; int type; int associated; unsigned long flags; struct sk_buff_head ack_wait_queue; struct ieee80211_channel channels[14]; struct ieee80211_rate rates[12]; struct ieee80211_supported_band band; /* Short preamble (used for RTS/CTS) */ unsigned int short_preamble:1; /* whether to pass frames with CRC errors to stack */ unsigned int pass_failed_fcs:1; /* whether to pass control frames to stack */ unsigned int pass_ctrl:1; /* whether we have received a 802.11 ACK that is pending */ unsigned int ack_pending:1; /* signal strength of the last 802.11 ACK received */ int ack_signal; }; #define ZD_REGDOMAIN_FCC 0x10 #define ZD_REGDOMAIN_IC 0x20 #define ZD_REGDOMAIN_ETSI 0x30 #define ZD_REGDOMAIN_SPAIN 0x31 #define ZD_REGDOMAIN_FRANCE 0x32 #define ZD_REGDOMAIN_JAPAN_2 0x40 #define ZD_REGDOMAIN_JAPAN 0x41 #define ZD_REGDOMAIN_JAPAN_3 0x49 enum { MIN_CHANNEL24 = 1, MAX_CHANNEL24 = 14, }; #define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80 struct ofdm_plcp_header { u8 prefix[3]; __le16 service; } __packed; static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header) { return header->prefix[0] & 0xf; } /* The following defines give the encoding of the 4-bit rate field in the * OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to * define the zd-rate values for OFDM. * * See the struct zd_ctrlset definition in zd_mac.h. */ #define ZD_OFDM_PLCP_RATE_6M 0xb #define ZD_OFDM_PLCP_RATE_9M 0xf #define ZD_OFDM_PLCP_RATE_12M 0xa #define ZD_OFDM_PLCP_RATE_18M 0xe #define ZD_OFDM_PLCP_RATE_24M 0x9 #define ZD_OFDM_PLCP_RATE_36M 0xd #define ZD_OFDM_PLCP_RATE_48M 0x8 #define ZD_OFDM_PLCP_RATE_54M 0xc struct cck_plcp_header { u8 signal; u8 service; __le16 length; __le16 crc16; } __packed; static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header) { return header->signal; } /* These defines give the encodings of the signal field in the 802.11b PLCP * header. The signal field gives the bit rate of the following packet. Even * if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s * rate to stay consistent with Zydas and our use of the term. * * Notify that these values are *not* used in the zd-rates. */ #define ZD_CCK_PLCP_SIGNAL_1M 0x0a #define ZD_CCK_PLCP_SIGNAL_2M 0x14 #define ZD_CCK_PLCP_SIGNAL_5M5 0x37 #define ZD_CCK_PLCP_SIGNAL_11M 0x6e static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw) { return hw->priv; } static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip) { return container_of(chip, struct zd_mac, chip); } static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb) { return zd_chip_to_mac(zd_usb_to_chip(usb)); } static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac) { return mac->hw->wiphy->perm_addr; } #define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip)) struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf); void zd_mac_clear(struct zd_mac *mac); int zd_mac_preinit_hw(struct ieee80211_hw *hw); int zd_mac_init_hw(struct ieee80211_hw *hw); int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length); void zd_mac_tx_failed(struct urb *urb); void zd_mac_tx_to_dev(struct sk_buff *skb, int error); int zd_op_start(struct ieee80211_hw *hw); void zd_op_stop(struct ieee80211_hw *hw, bool suspend); int zd_restore_settings(struct zd_mac *mac); #ifdef DEBUG void zd_dump_rx_status(const struct rx_status *status); #else #define zd_dump_rx_status(status) #endif /* DEBUG */ #endif /* _ZD_MAC_H */ |
| 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 | // SPDX-License-Identifier: GPL-2.0 /* * linux/mm/mlock.c * * (C) Copyright 1995 Linus Torvalds * (C) Copyright 2002 Christoph Hellwig */ #include <linux/capability.h> #include <linux/mman.h> #include <linux/mm.h> #include <linux/sched/user.h> #include <linux/swap.h> #include <linux/swapops.h> #include <linux/pagemap.h> #include <linux/pagevec.h> #include <linux/pagewalk.h> #include <linux/mempolicy.h> #include <linux/syscalls.h> #include <linux/sched.h> #include <linux/export.h> #include <linux/rmap.h> #include <linux/mmzone.h> #include <linux/hugetlb.h> #include <linux/memcontrol.h> #include <linux/mm_inline.h> #include <linux/secretmem.h> #include "internal.h" struct mlock_fbatch { local_lock_t lock; struct folio_batch fbatch; }; static DEFINE_PER_CPU(struct mlock_fbatch, mlock_fbatch) = { .lock = INIT_LOCAL_LOCK(lock), }; bool can_do_mlock(void) { if (rlimit(RLIMIT_MEMLOCK) != 0) return true; if (capable(CAP_IPC_LOCK)) return true; return false; } EXPORT_SYMBOL(can_do_mlock); /* * Mlocked folios are marked with the PG_mlocked flag for efficient testing * in vmscan and, possibly, the fault path; and to support semi-accurate * statistics. * * An mlocked folio [folio_test_mlocked(folio)] is unevictable. As such, it * will be ostensibly placed on the LRU "unevictable" list (actually no such * list exists), rather than the [in]active lists. PG_unevictable is set to * indicate the unevictable state. */ static struct lruvec *__mlock_folio(struct folio *folio, struct lruvec *lruvec) { /* There is nothing more we can do while it's off LRU */ if (!folio_test_clear_lru(folio)) return lruvec; lruvec = folio_lruvec_relock_irq(folio, lruvec); if (unlikely(folio_evictable(folio))) { /* * This is a little surprising, but quite possible: PG_mlocked * must have got cleared already by another CPU. Could this * folio be unevictable? I'm not sure, but move it now if so. */ if (folio_test_unevictable(folio)) { lruvec_del_folio(lruvec, folio); folio_clear_unevictable(folio); lruvec_add_folio(lruvec, folio); __count_vm_events(UNEVICTABLE_PGRESCUED, folio_nr_pages(folio)); } goto out; } if (folio_test_unevictable(folio)) { if (folio_test_mlocked(folio)) folio->mlock_count++; goto out; } lruvec_del_folio(lruvec, folio); folio_clear_active(folio); folio_set_unevictable(folio); folio->mlock_count = !!folio_test_mlocked(folio); lruvec_add_folio(lruvec, folio); __count_vm_events(UNEVICTABLE_PGCULLED, folio_nr_pages(folio)); out: folio_set_lru(folio); return lruvec; } static struct lruvec *__mlock_new_folio(struct folio *folio, struct lruvec *lruvec) { VM_BUG_ON_FOLIO(folio_test_lru(folio), folio); lruvec = folio_lruvec_relock_irq(folio, lruvec); /* As above, this is a little surprising, but possible */ if (unlikely(folio_evictable(folio))) goto out; folio_set_unevictable(folio); folio->mlock_count = !!folio_test_mlocked(folio); __count_vm_events(UNEVICTABLE_PGCULLED, folio_nr_pages(folio)); out: lruvec_add_folio(lruvec, folio); folio_set_lru(folio); return lruvec; } static struct lruvec *__munlock_folio(struct folio *folio, struct lruvec *lruvec) { int nr_pages = folio_nr_pages(folio); bool isolated = false; if (!folio_test_clear_lru(folio)) goto munlock; isolated = true; lruvec = folio_lruvec_relock_irq(folio, lruvec); if (folio_test_unevictable(folio)) { /* Then mlock_count is maintained, but might undercount */ if (folio->mlock_count) folio->mlock_count--; if (folio->mlock_count) goto out; } /* else assume that was the last mlock: reclaim will fix it if not */ munlock: if (folio_test_clear_mlocked(folio)) { __zone_stat_mod_folio(folio, NR_MLOCK, -nr_pages); if (isolated || !folio_test_unevictable(folio)) __count_vm_events(UNEVICTABLE_PGMUNLOCKED, nr_pages); else __count_vm_events(UNEVICTABLE_PGSTRANDED, nr_pages); } /* folio_evictable() has to be checked *after* clearing Mlocked */ if (isolated && folio_test_unevictable(folio) && folio_evictable(folio)) { lruvec_del_folio(lruvec, folio); folio_clear_unevictable(folio); lruvec_add_folio(lruvec, folio); __count_vm_events(UNEVICTABLE_PGRESCUED, nr_pages); } out: if (isolated) folio_set_lru(folio); return lruvec; } /* * Flags held in the low bits of a struct folio pointer on the mlock_fbatch. */ #define LRU_FOLIO 0x1 #define NEW_FOLIO 0x2 static inline struct folio *mlock_lru(struct folio *folio) { return (struct folio *)((unsigned long)folio + LRU_FOLIO); } static inline struct folio *mlock_new(struct folio *folio) { return (struct folio *)((unsigned long)folio + NEW_FOLIO); } /* * mlock_folio_batch() is derived from folio_batch_move_lru(): perhaps that can * make use of such folio pointer flags in future, but for now just keep it for * mlock. We could use three separate folio batches instead, but one feels * better (munlocking a full folio batch does not need to drain mlocking folio * batches first). */ static void mlock_folio_batch(struct folio_batch *fbatch) { struct lruvec *lruvec = NULL; unsigned long mlock; struct folio *folio; int i; for (i = 0; i < folio_batch_count(fbatch); i++) { folio = fbatch->folios[i]; mlock = (unsigned long)folio & (LRU_FOLIO | NEW_FOLIO); folio = (struct folio *)((unsigned long)folio - mlock); fbatch->folios[i] = folio; if (mlock & LRU_FOLIO) lruvec = __mlock_folio(folio, lruvec); else if (mlock & NEW_FOLIO) lruvec = __mlock_new_folio(folio, lruvec); else lruvec = __munlock_folio(folio, lruvec); } if (lruvec) unlock_page_lruvec_irq(lruvec); folios_put(fbatch); } void mlock_drain_local(void) { struct folio_batch *fbatch; local_lock(&mlock_fbatch.lock); fbatch = this_cpu_ptr(&mlock_fbatch.fbatch); if (folio_batch_count(fbatch)) mlock_folio_batch(fbatch); local_unlock(&mlock_fbatch.lock); } void mlock_drain_remote(int cpu) { struct folio_batch *fbatch; WARN_ON_ONCE(cpu_online(cpu)); fbatch = &per_cpu(mlock_fbatch.fbatch, cpu); if (folio_batch_count(fbatch)) mlock_folio_batch(fbatch); } bool need_mlock_drain(int cpu) { return folio_batch_count(&per_cpu(mlock_fbatch.fbatch, cpu)); } /** * mlock_folio - mlock a folio already on (or temporarily off) LRU * @folio: folio to be mlocked. */ void mlock_folio(struct folio *folio) { struct folio_batch *fbatch; local_lock(&mlock_fbatch.lock); fbatch = this_cpu_ptr(&mlock_fbatch.fbatch); if (!folio_test_set_mlocked(folio)) { int nr_pages = folio_nr_pages(folio); zone_stat_mod_folio(folio, NR_MLOCK, nr_pages); __count_vm_events(UNEVICTABLE_PGMLOCKED, nr_pages); } folio_get(folio); if (!folio_batch_add(fbatch, mlock_lru(folio)) || folio_test_large(folio) || lru_cache_disabled()) mlock_folio_batch(fbatch); local_unlock(&mlock_fbatch.lock); } /** * mlock_new_folio - mlock a newly allocated folio not yet on LRU * @folio: folio to be mlocked, either normal or a THP head. */ void mlock_new_folio(struct folio *folio) { struct folio_batch *fbatch; int nr_pages = folio_nr_pages(folio); local_lock(&mlock_fbatch.lock); fbatch = this_cpu_ptr(&mlock_fbatch.fbatch); folio_set_mlocked(folio); zone_stat_mod_folio(folio, NR_MLOCK, nr_pages); __count_vm_events(UNEVICTABLE_PGMLOCKED, nr_pages); folio_get(folio); if (!folio_batch_add(fbatch, mlock_new(folio)) || folio_test_large(folio) || lru_cache_disabled()) mlock_folio_batch(fbatch); local_unlock(&mlock_fbatch.lock); } /** * munlock_folio - munlock a folio * @folio: folio to be munlocked, either normal or a THP head. */ void munlock_folio(struct folio *folio) { struct folio_batch *fbatch; local_lock(&mlock_fbatch.lock); fbatch = this_cpu_ptr(&mlock_fbatch.fbatch); /* * folio_test_clear_mlocked(folio) must be left to __munlock_folio(), * which will check whether the folio is multiply mlocked. */ folio_get(folio); if (!folio_batch_add(fbatch, folio) || folio_test_large(folio) || lru_cache_disabled()) mlock_folio_batch(fbatch); local_unlock(&mlock_fbatch.lock); } static inline unsigned int folio_mlock_step(struct folio *folio, pte_t *pte, unsigned long addr, unsigned long end) { const fpb_t fpb_flags = FPB_IGNORE_DIRTY | FPB_IGNORE_SOFT_DIRTY; unsigned int count = (end - addr) >> PAGE_SHIFT; pte_t ptent = ptep_get(pte); if (!folio_test_large(folio)) return 1; return folio_pte_batch(folio, addr, pte, ptent, count, fpb_flags, NULL, NULL, NULL); } static inline bool allow_mlock_munlock(struct folio *folio, struct vm_area_struct *vma, unsigned long start, unsigned long end, unsigned int step) { /* * For unlock, allow munlock large folio which is partially * mapped to VMA. As it's possible that large folio is * mlocked and VMA is split later. * * During memory pressure, such kind of large folio can * be split. And the pages are not in VM_LOCKed VMA * can be reclaimed. */ if (!(vma->vm_flags & VM_LOCKED)) return true; /* folio_within_range() cannot take KSM, but any small folio is OK */ if (!folio_test_large(folio)) return true; /* folio not in range [start, end), skip mlock */ if (!folio_within_range(folio, vma, start, end)) return false; /* folio is not fully mapped, skip mlock */ if (step != folio_nr_pages(folio)) return false; return true; } static int mlock_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct vm_area_struct *vma = walk->vma; spinlock_t *ptl; pte_t *start_pte, *pte; pte_t ptent; struct folio *folio; unsigned int step = 1; unsigned long start = addr; ptl = pmd_trans_huge_lock(pmd, vma); if (ptl) { if (!pmd_present(*pmd)) goto out; if (is_huge_zero_pmd(*pmd)) goto out; folio = pmd_folio(*pmd); if (folio_is_zone_device(folio)) goto out; if (vma->vm_flags & VM_LOCKED) mlock_folio(folio); else munlock_folio(folio); goto out; } start_pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); if (!start_pte) { walk->action = ACTION_AGAIN; return 0; } for (pte = start_pte; addr != end; pte++, addr += PAGE_SIZE) { ptent = ptep_get(pte); if (!pte_present(ptent)) continue; folio = vm_normal_folio(vma, addr, ptent); if (!folio || folio_is_zone_device(folio)) continue; step = folio_mlock_step(folio, pte, addr, end); if (!allow_mlock_munlock(folio, vma, start, end, step)) goto next_entry; if (vma->vm_flags & VM_LOCKED) mlock_folio(folio); else munlock_folio(folio); next_entry: pte += step - 1; addr += (step - 1) << PAGE_SHIFT; } pte_unmap(start_pte); out: spin_unlock(ptl); cond_resched(); return 0; } /* * mlock_vma_pages_range() - mlock any pages already in the range, * or munlock all pages in the range. * @vma - vma containing range to be mlock()ed or munlock()ed * @start - start address in @vma of the range * @end - end of range in @vma * @newflags - the new set of flags for @vma. * * Called for mlock(), mlock2() and mlockall(), to set @vma VM_LOCKED; * called for munlock() and munlockall(), to clear VM_LOCKED from @vma. */ static void mlock_vma_pages_range(struct vm_area_struct *vma, unsigned long start, unsigned long end, vm_flags_t newflags) { static const struct mm_walk_ops mlock_walk_ops = { .pmd_entry = mlock_pte_range, .walk_lock = PGWALK_WRLOCK_VERIFY, }; /* * There is a slight chance that concurrent page migration, * or page reclaim finding a page of this now-VM_LOCKED vma, * will call mlock_vma_folio() and raise page's mlock_count: * double counting, leaving the page unevictable indefinitely. * Communicate this danger to mlock_vma_folio() with VM_IO, * which is a VM_SPECIAL flag not allowed on VM_LOCKED vmas. * mmap_lock is held in write mode here, so this weird * combination should not be visible to other mmap_lock users; * but WRITE_ONCE so rmap walkers must see VM_IO if VM_LOCKED. */ if (newflags & VM_LOCKED) newflags |= VM_IO; vma_start_write(vma); vm_flags_reset_once(vma, newflags); lru_add_drain(); walk_page_range(vma->vm_mm, start, end, &mlock_walk_ops, NULL); lru_add_drain(); if (newflags & VM_IO) { newflags &= ~VM_IO; vm_flags_reset_once(vma, newflags); } } /* * mlock_fixup - handle mlock[all]/munlock[all] requests. * * Filters out "special" vmas -- VM_LOCKED never gets set for these, and * munlock is a no-op. However, for some special vmas, we go ahead and * populate the ptes. * * For vmas that pass the filters, merge/split as appropriate. */ static int mlock_fixup(struct vma_iterator *vmi, struct vm_area_struct *vma, struct vm_area_struct **prev, unsigned long start, unsigned long end, vm_flags_t newflags) { struct mm_struct *mm = vma->vm_mm; int nr_pages; int ret = 0; vm_flags_t oldflags = vma->vm_flags; if (newflags == oldflags || (oldflags & VM_SPECIAL) || is_vm_hugetlb_page(vma) || vma == get_gate_vma(current->mm) || vma_is_dax(vma) || vma_is_secretmem(vma) || (oldflags & VM_DROPPABLE)) /* don't set VM_LOCKED or VM_LOCKONFAULT and don't count */ goto out; vma = vma_modify_flags(vmi, *prev, vma, start, end, newflags); if (IS_ERR(vma)) { ret = PTR_ERR(vma); goto out; } /* * Keep track of amount of locked VM. */ nr_pages = (end - start) >> PAGE_SHIFT; if (!(newflags & VM_LOCKED)) nr_pages = -nr_pages; else if (oldflags & VM_LOCKED) nr_pages = 0; mm->locked_vm += nr_pages; /* * vm_flags is protected by the mmap_lock held in write mode. * It's okay if try_to_unmap_one unmaps a page just after we * set VM_LOCKED, populate_vma_page_range will bring it back. */ if ((newflags & VM_LOCKED) && (oldflags & VM_LOCKED)) { /* No work to do, and mlocking twice would be wrong */ vma_start_write(vma); vm_flags_reset(vma, newflags); } else { mlock_vma_pages_range(vma, start, end, newflags); } out: *prev = vma; return ret; } static int apply_vma_lock_flags(unsigned long start, size_t len, vm_flags_t flags) { unsigned long nstart, end, tmp; struct vm_area_struct *vma, *prev; VMA_ITERATOR(vmi, current->mm, start); VM_BUG_ON(offset_in_page(start)); VM_BUG_ON(len != PAGE_ALIGN(len)); end = start + len; if (end < start) return -EINVAL; if (end == start) return 0; vma = vma_iter_load(&vmi); if (!vma) return -ENOMEM; prev = vma_prev(&vmi); if (start > vma->vm_start) prev = vma; nstart = start; tmp = vma->vm_start; for_each_vma_range(vmi, vma, end) { int error; vm_flags_t newflags; if (vma->vm_start != tmp) return -ENOMEM; newflags = vma->vm_flags & ~VM_LOCKED_MASK; newflags |= flags; /* Here we know that vma->vm_start <= nstart < vma->vm_end. */ tmp = vma->vm_end; if (tmp > end) tmp = end; error = mlock_fixup(&vmi, vma, &prev, nstart, tmp, newflags); if (error) return error; tmp = vma_iter_end(&vmi); nstart = tmp; } if (tmp < end) return -ENOMEM; return 0; } /* * Go through vma areas and sum size of mlocked * vma pages, as return value. * Note deferred memory locking case(mlock2(,,MLOCK_ONFAULT) * is also counted. * Return value: previously mlocked page counts */ static unsigned long count_mm_mlocked_page_nr(struct mm_struct *mm, unsigned long start, size_t len) { struct vm_area_struct *vma; unsigned long count = 0; unsigned long end; VMA_ITERATOR(vmi, mm, start); /* Don't overflow past ULONG_MAX */ if (unlikely(ULONG_MAX - len < start)) end = ULONG_MAX; else end = start + len; for_each_vma_range(vmi, vma, end) { if (vma->vm_flags & VM_LOCKED) { if (start > vma->vm_start) count -= (start - vma->vm_start); if (end < vma->vm_end) { count += end - vma->vm_start; break; } count += vma->vm_end - vma->vm_start; } } return count >> PAGE_SHIFT; } /* * convert get_user_pages() return value to posix mlock() error */ static int __mlock_posix_error_return(long retval) { if (retval == -EFAULT) retval = -ENOMEM; else if (retval == -ENOMEM) retval = -EAGAIN; return retval; } static __must_check int do_mlock(unsigned long start, size_t len, vm_flags_t flags) { unsigned long locked; unsigned long lock_limit; int error = -ENOMEM; start = untagged_addr(start); if (!can_do_mlock()) return -EPERM; len = PAGE_ALIGN(len + (offset_in_page(start))); start &= PAGE_MASK; lock_limit = rlimit(RLIMIT_MEMLOCK); lock_limit >>= PAGE_SHIFT; locked = len >> PAGE_SHIFT; if (mmap_write_lock_killable(current->mm)) return -EINTR; locked += current->mm->locked_vm; if ((locked > lock_limit) && (!capable(CAP_IPC_LOCK))) { /* * It is possible that the regions requested intersect with * previously mlocked areas, that part area in "mm->locked_vm" * should not be counted to new mlock increment count. So check * and adjust locked count if necessary. */ locked -= count_mm_mlocked_page_nr(current->mm, start, len); } /* check against resource limits */ if ((locked <= lock_limit) || capable(CAP_IPC_LOCK)) error = apply_vma_lock_flags(start, len, flags); mmap_write_unlock(current->mm); if (error) return error; error = __mm_populate(start, len, 0); if (error) return __mlock_posix_error_return(error); return 0; } SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len) { return do_mlock(start, len, VM_LOCKED); } SYSCALL_DEFINE3(mlock2, unsigned long, start, size_t, len, int, flags) { vm_flags_t vm_flags = VM_LOCKED; if (flags & ~MLOCK_ONFAULT) return -EINVAL; if (flags & MLOCK_ONFAULT) vm_flags |= VM_LOCKONFAULT; return do_mlock(start, len, vm_flags); } SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len) { int ret; start = untagged_addr(start); len = PAGE_ALIGN(len + (offset_in_page(start))); start &= PAGE_MASK; if (mmap_write_lock_killable(current->mm)) return -EINTR; ret = apply_vma_lock_flags(start, len, 0); mmap_write_unlock(current->mm); return ret; } /* * Take the MCL_* flags passed into mlockall (or 0 if called from munlockall) * and translate into the appropriate modifications to mm->def_flags and/or the * flags for all current VMAs. * * There are a couple of subtleties with this. If mlockall() is called multiple * times with different flags, the values do not necessarily stack. If mlockall * is called once including the MCL_FUTURE flag and then a second time without * it, VM_LOCKED and VM_LOCKONFAULT will be cleared from mm->def_flags. */ static int apply_mlockall_flags(int flags) { VMA_ITERATOR(vmi, current->mm, 0); struct vm_area_struct *vma, *prev = NULL; vm_flags_t to_add = 0; current->mm->def_flags &= ~VM_LOCKED_MASK; if (flags & MCL_FUTURE) { current->mm->def_flags |= VM_LOCKED; if (flags & MCL_ONFAULT) current->mm->def_flags |= VM_LOCKONFAULT; if (!(flags & MCL_CURRENT)) goto out; } if (flags & MCL_CURRENT) { to_add |= VM_LOCKED; if (flags & MCL_ONFAULT) to_add |= VM_LOCKONFAULT; } for_each_vma(vmi, vma) { int error; vm_flags_t newflags; newflags = vma->vm_flags & ~VM_LOCKED_MASK; newflags |= to_add; error = mlock_fixup(&vmi, vma, &prev, vma->vm_start, vma->vm_end, newflags); /* Ignore errors, but prev needs fixing up. */ if (error) prev = vma; cond_resched(); } out: return 0; } SYSCALL_DEFINE1(mlockall, int, flags) { unsigned long lock_limit; int ret; if (!flags || (flags & ~(MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT)) || flags == MCL_ONFAULT) return -EINVAL; if (!can_do_mlock()) return -EPERM; lock_limit = rlimit(RLIMIT_MEMLOCK); lock_limit >>= PAGE_SHIFT; if (mmap_write_lock_killable(current->mm)) return -EINTR; ret = -ENOMEM; if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) || capable(CAP_IPC_LOCK)) ret = apply_mlockall_flags(flags); mmap_write_unlock(current->mm); if (!ret && (flags & MCL_CURRENT)) mm_populate(0, TASK_SIZE); return ret; } SYSCALL_DEFINE0(munlockall) { int ret; if (mmap_write_lock_killable(current->mm)) return -EINTR; ret = apply_mlockall_flags(0); mmap_write_unlock(current->mm); return ret; } /* * Objects with different lifetime than processes (SHM_LOCK and SHM_HUGETLB * shm segments) get accounted against the user_struct instead. */ static DEFINE_SPINLOCK(shmlock_user_lock); int user_shm_lock(size_t size, struct ucounts *ucounts) { unsigned long lock_limit, locked; long memlock; int allowed = 0; locked = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; lock_limit = rlimit(RLIMIT_MEMLOCK); if (lock_limit != RLIM_INFINITY) lock_limit >>= PAGE_SHIFT; spin_lock(&shmlock_user_lock); memlock = inc_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_MEMLOCK, locked); if ((memlock == LONG_MAX || memlock > lock_limit) && !capable(CAP_IPC_LOCK)) { dec_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_MEMLOCK, locked); goto out; } if (!get_ucounts(ucounts)) { dec_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_MEMLOCK, locked); allowed = 0; goto out; } allowed = 1; out: spin_unlock(&shmlock_user_lock); return allowed; } void user_shm_unlock(size_t size, struct ucounts *ucounts) { spin_lock(&shmlock_user_lock); dec_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_MEMLOCK, (size + PAGE_SIZE - 1) >> PAGE_SHIFT); spin_unlock(&shmlock_user_lock); put_ucounts(ucounts); } |
| 8 8 3200 178 3 456 | 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 | /* SPDX-License-Identifier: GPL-2.0-only */ /* * include/linux/idr.h * * 2002-10-18 written by Jim Houston jim.houston@ccur.com * Copyright (C) 2002 by Concurrent Computer Corporation * * Small id to pointer translation service avoiding fixed sized * tables. */ #ifndef __IDR_H__ #define __IDR_H__ #include <linux/radix-tree.h> #include <linux/gfp.h> #include <linux/percpu.h> #include <linux/cleanup.h> struct idr { struct radix_tree_root idr_rt; unsigned int idr_base; unsigned int idr_next; }; /* * The IDR API does not expose the tagging functionality of the radix tree * to users. Use tag 0 to track whether a node has free space below it. */ #define IDR_FREE 0 /* Set the IDR flag and the IDR_FREE tag */ #define IDR_RT_MARKER (ROOT_IS_IDR | (__force gfp_t) \ (1 << (ROOT_TAG_SHIFT + IDR_FREE))) #define IDR_INIT_BASE(name, base) { \ .idr_rt = RADIX_TREE_INIT(name, IDR_RT_MARKER), \ .idr_base = (base), \ .idr_next = 0, \ } /** * IDR_INIT() - Initialise an IDR. * @name: Name of IDR. * * A freshly-initialised IDR contains no IDs. */ #define IDR_INIT(name) IDR_INIT_BASE(name, 0) /** * DEFINE_IDR() - Define a statically-allocated IDR. * @name: Name of IDR. * * An IDR defined using this macro is ready for use with no additional * initialisation required. It contains no IDs. */ #define DEFINE_IDR(name) struct idr name = IDR_INIT(name) /** * idr_get_cursor - Return the current position of the cyclic allocator * @idr: idr handle * * The value returned is the value that will be next returned from * idr_alloc_cyclic() if it is free (otherwise the search will start from * this position). */ static inline unsigned int idr_get_cursor(const struct idr *idr) { return READ_ONCE(idr->idr_next); } /** * idr_set_cursor - Set the current position of the cyclic allocator * @idr: idr handle * @val: new position * * The next call to idr_alloc_cyclic() will return @val if it is free * (otherwise the search will start from this position). */ static inline void idr_set_cursor(struct idr *idr, unsigned int val) { WRITE_ONCE(idr->idr_next, val); } /** * DOC: idr sync * idr synchronization (stolen from radix-tree.h) * * idr_find() is able to be called locklessly, using RCU. The caller must * ensure calls to this function are made within rcu_read_lock() regions. * Other readers (lock-free or otherwise) and modifications may be running * concurrently. * * It is still required that the caller manage the synchronization and * lifetimes of the items. So if RCU lock-free lookups are used, typically * this would mean that the items have their own locks, or are amenable to * lock-free access; and that the items are freed by RCU (or only freed after * having been deleted from the idr tree *and* a synchronize_rcu() grace * period). */ #define idr_lock(idr) xa_lock(&(idr)->idr_rt) #define idr_unlock(idr) xa_unlock(&(idr)->idr_rt) #define idr_lock_bh(idr) xa_lock_bh(&(idr)->idr_rt) #define idr_unlock_bh(idr) xa_unlock_bh(&(idr)->idr_rt) #define idr_lock_irq(idr) xa_lock_irq(&(idr)->idr_rt) #define idr_unlock_irq(idr) xa_unlock_irq(&(idr)->idr_rt) #define idr_lock_irqsave(idr, flags) \ xa_lock_irqsave(&(idr)->idr_rt, flags) #define idr_unlock_irqrestore(idr, flags) \ xa_unlock_irqrestore(&(idr)->idr_rt, flags) void idr_preload(gfp_t gfp_mask); int idr_alloc(struct idr *, void *ptr, int start, int end, gfp_t); int __must_check idr_alloc_u32(struct idr *, void *ptr, u32 *id, unsigned long max, gfp_t); int idr_alloc_cyclic(struct idr *, void *ptr, int start, int end, gfp_t); void *idr_remove(struct idr *, unsigned long id); void *idr_find(const struct idr *, unsigned long id); int idr_for_each(const struct idr *, int (*fn)(int id, void *p, void *data), void *data); void *idr_get_next(struct idr *, int *nextid); void *idr_get_next_ul(struct idr *, unsigned long *nextid); void *idr_replace(struct idr *, void *, unsigned long id); void idr_destroy(struct idr *); struct __class_idr { struct idr *idr; int id; }; #define idr_null ((struct __class_idr){ NULL, -1 }) #define take_idr_id(id) __get_and_null(id, idr_null) DEFINE_CLASS(idr_alloc, struct __class_idr, if (_T.id >= 0) idr_remove(_T.idr, _T.id), ((struct __class_idr){ .idr = idr, .id = idr_alloc(idr, ptr, start, end, gfp), }), struct idr *idr, void *ptr, int start, int end, gfp_t gfp); /** * idr_init_base() - Initialise an IDR. * @idr: IDR handle. * @base: The base value for the IDR. * * This variation of idr_init() creates an IDR which will allocate IDs * starting at %base. */ static inline void idr_init_base(struct idr *idr, int base) { INIT_RADIX_TREE(&idr->idr_rt, IDR_RT_MARKER); idr->idr_base = base; idr->idr_next = 0; } /** * idr_init() - Initialise an IDR. * @idr: IDR handle. * * Initialise a dynamically allocated IDR. To initialise a * statically allocated IDR, use DEFINE_IDR(). */ static inline void idr_init(struct idr *idr) { idr_init_base(idr, 0); } /** * idr_is_empty() - Are there any IDs allocated? * @idr: IDR handle. * * Return: %true if any IDs have been allocated from this IDR. */ static inline bool idr_is_empty(const struct idr *idr) { return radix_tree_empty(&idr->idr_rt) && radix_tree_tagged(&idr->idr_rt, IDR_FREE); } /** * idr_preload_end - end preload section started with idr_preload() * * Each idr_preload() should be matched with an invocation of this * function. See idr_preload() for details. */ static inline void idr_preload_end(void) { local_unlock(&radix_tree_preloads.lock); } /** * idr_for_each_entry() - Iterate over an IDR's elements of a given type. * @idr: IDR handle. * @entry: The type * to use as cursor * @id: Entry ID. * * @entry and @id do not need to be initialized before the loop, and * after normal termination @entry is left with the value NULL. This * is convenient for a "not found" value. */ #define idr_for_each_entry(idr, entry, id) \ for (id = 0; ((entry) = idr_get_next(idr, &(id))) != NULL; id += 1U) /** * idr_for_each_entry_ul() - Iterate over an IDR's elements of a given type. * @idr: IDR handle. * @entry: The type * to use as cursor. * @tmp: A temporary placeholder for ID. * @id: Entry ID. * * @entry and @id do not need to be initialized before the loop, and * after normal termination @entry is left with the value NULL. This * is convenient for a "not found" value. */ #define idr_for_each_entry_ul(idr, entry, tmp, id) \ for (tmp = 0, id = 0; \ ((entry) = tmp <= id ? idr_get_next_ul(idr, &(id)) : NULL) != NULL; \ tmp = id, ++id) /** * idr_for_each_entry_continue() - Continue iteration over an IDR's elements of a given type * @idr: IDR handle. * @entry: The type * to use as a cursor. * @id: Entry ID. * * Continue to iterate over entries, continuing after the current position. */ #define idr_for_each_entry_continue(idr, entry, id) \ for ((entry) = idr_get_next((idr), &(id)); \ entry; \ ++id, (entry) = idr_get_next((idr), &(id))) /** * idr_for_each_entry_continue_ul() - Continue iteration over an IDR's elements of a given type * @idr: IDR handle. * @entry: The type * to use as a cursor. * @tmp: A temporary placeholder for ID. * @id: Entry ID. * * Continue to iterate over entries, continuing after the current position. * After normal termination @entry is left with the value NULL. This * is convenient for a "not found" value. */ #define idr_for_each_entry_continue_ul(idr, entry, tmp, id) \ for (tmp = id; \ ((entry) = tmp <= id ? idr_get_next_ul(idr, &(id)) : NULL) != NULL; \ tmp = id, ++id) /* * IDA - ID Allocator, use when translation from id to pointer isn't necessary. */ #define IDA_CHUNK_SIZE 128 /* 128 bytes per chunk */ #define IDA_BITMAP_LONGS (IDA_CHUNK_SIZE / sizeof(long)) #define IDA_BITMAP_BITS (IDA_BITMAP_LONGS * sizeof(long) * 8) struct ida_bitmap { unsigned long bitmap[IDA_BITMAP_LONGS]; }; struct ida { struct xarray xa; }; #define IDA_INIT_FLAGS (XA_FLAGS_LOCK_IRQ | XA_FLAGS_ALLOC) #define IDA_INIT(name) { \ .xa = XARRAY_INIT(name, IDA_INIT_FLAGS) \ } #define DEFINE_IDA(name) struct ida name = IDA_INIT(name) int ida_alloc_range(struct ida *, unsigned int min, unsigned int max, gfp_t); void ida_free(struct ida *, unsigned int id); void ida_destroy(struct ida *ida); int ida_find_first_range(struct ida *ida, unsigned int min, unsigned int max); /** * ida_alloc() - Allocate an unused ID. * @ida: IDA handle. * @gfp: Memory allocation flags. * * Allocate an ID between 0 and %INT_MAX, inclusive. * * Context: Any context. It is safe to call this function without * locking in your code. * Return: The allocated ID, or %-ENOMEM if memory could not be allocated, * or %-ENOSPC if there are no free IDs. */ static inline int ida_alloc(struct ida *ida, gfp_t gfp) { return ida_alloc_range(ida, 0, ~0, gfp); } /** * ida_alloc_min() - Allocate an unused ID. * @ida: IDA handle. * @min: Lowest ID to allocate. * @gfp: Memory allocation flags. * * Allocate an ID between @min and %INT_MAX, inclusive. * * Context: Any context. It is safe to call this function without * locking in your code. * Return: The allocated ID, or %-ENOMEM if memory could not be allocated, * or %-ENOSPC if there are no free IDs. */ static inline int ida_alloc_min(struct ida *ida, unsigned int min, gfp_t gfp) { return ida_alloc_range(ida, min, ~0, gfp); } /** * ida_alloc_max() - Allocate an unused ID. * @ida: IDA handle. * @max: Highest ID to allocate. * @gfp: Memory allocation flags. * * Allocate an ID between 0 and @max, inclusive. * * Context: Any context. It is safe to call this function without * locking in your code. * Return: The allocated ID, or %-ENOMEM if memory could not be allocated, * or %-ENOSPC if there are no free IDs. */ static inline int ida_alloc_max(struct ida *ida, unsigned int max, gfp_t gfp) { return ida_alloc_range(ida, 0, max, gfp); } static inline void ida_init(struct ida *ida) { xa_init_flags(&ida->xa, IDA_INIT_FLAGS); } /* * ida_simple_get() and ida_simple_remove() are deprecated. Use * ida_alloc() and ida_free() instead respectively. */ #define ida_simple_get(ida, start, end, gfp) \ ida_alloc_range(ida, start, (end) - 1, gfp) #define ida_simple_remove(ida, id) ida_free(ida, id) static inline bool ida_is_empty(const struct ida *ida) { return xa_empty(&ida->xa); } static inline bool ida_exists(struct ida *ida, unsigned int id) { return ida_find_first_range(ida, id, id) == id; } static inline int ida_find_first(struct ida *ida) { return ida_find_first_range(ida, 0, ~0); } #endif /* __IDR_H__ */ |
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2021 pureLiFi */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/skbuff.h> #include <linux/usb.h> #include <linux/workqueue.h> #include <linux/proc_fs.h> #include <linux/fs.h> #include <linux/string.h> #include <linux/module.h> #include <net/mac80211.h> #include <linux/unaligned.h> #include <linux/sysfs.h> #include "mac.h" #include "usb.h" #include "chip.h" static const struct usb_device_id usb_ids[] = { { USB_DEVICE(PURELIFI_X_VENDOR_ID_0, PURELIFI_X_PRODUCT_ID_0), .driver_info = DEVICE_LIFI_X }, { USB_DEVICE(PURELIFI_XC_VENDOR_ID_0, PURELIFI_XC_PRODUCT_ID_0), .driver_info = DEVICE_LIFI_XC }, { USB_DEVICE(PURELIFI_XL_VENDOR_ID_0, PURELIFI_XL_PRODUCT_ID_0), .driver_info = DEVICE_LIFI_XL }, {} }; void plfxlc_send_packet_from_data_queue(struct plfxlc_usb *usb) { struct plfxlc_usb_tx *tx = &usb->tx; struct sk_buff *skb = NULL; unsigned long flags; u8 last_served_sidx; spin_lock_irqsave(&tx->lock, flags); last_served_sidx = usb->sidx; do { usb->sidx = (usb->sidx + 1) % MAX_STA_NUM; if (!(tx->station[usb->sidx].flag & STATION_CONNECTED_FLAG)) continue; if (!(tx->station[usb->sidx].flag & STATION_FIFO_FULL_FLAG)) skb = skb_peek(&tx->station[usb->sidx].data_list); } while ((usb->sidx != last_served_sidx) && (!skb)); if (skb) { skb = skb_dequeue(&tx->station[usb->sidx].data_list); plfxlc_usb_wreq_async(usb, skb->data, skb->len, USB_REQ_DATA_TX, plfxlc_tx_urb_complete, skb); if (skb_queue_len(&tx->station[usb->sidx].data_list) <= 60) ieee80211_wake_queues(plfxlc_usb_to_hw(usb)); } spin_unlock_irqrestore(&tx->lock, flags); } static void handle_rx_packet(struct plfxlc_usb *usb, const u8 *buffer, unsigned int length) { plfxlc_mac_rx(plfxlc_usb_to_hw(usb), buffer, length); } static void rx_urb_complete(struct urb *urb) { struct plfxlc_usb_tx *tx; struct plfxlc_usb *usb; unsigned int length; const u8 *buffer; u16 status; u8 sidx; int r; if (!urb) { pr_err("urb is NULL\n"); return; } if (!urb->context) { pr_err("urb ctx is NULL\n"); return; } usb = urb->context; if (usb->initialized != 1) { pr_err("usb is not initialized\n"); return; } tx = &usb->tx; switch (urb->status) { case 0: break; case -ESHUTDOWN: case -EINVAL: case -ENODEV: case -ENOENT: case -ECONNRESET: case -EPIPE: dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status); return; default: dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status); if (tx->submitted_urbs++ < PURELIFI_URB_RETRY_MAX) { dev_dbg(plfxlc_urb_dev(urb), "urb %p resubmit %d", urb, tx->submitted_urbs++); goto resubmit; } else { dev_dbg(plfxlc_urb_dev(urb), "urb %p max resubmits reached", urb); tx->submitted_urbs = 0; return; } } buffer = urb->transfer_buffer; length = le32_to_cpu(*(__le32 *)(buffer + sizeof(struct rx_status))) + sizeof(u32); if (urb->actual_length != (PLF_MSG_STATUS_OFFSET + 1)) { if (usb->initialized && usb->link_up) handle_rx_packet(usb, buffer, length); goto resubmit; } status = buffer[PLF_MSG_STATUS_OFFSET]; switch (status) { case STATION_FIFO_ALMOST_FULL_NOT_MESSAGE: dev_dbg(&usb->intf->dev, "FIFO full not packet receipt\n"); tx->mac_fifo_full = 1; for (sidx = 0; sidx < MAX_STA_NUM; sidx++) tx->station[sidx].flag |= STATION_FIFO_FULL_FLAG; break; case STATION_FIFO_ALMOST_FULL_MESSAGE: dev_dbg(&usb->intf->dev, "FIFO full packet receipt\n"); for (sidx = 0; sidx < MAX_STA_NUM; sidx++) tx->station[sidx].flag &= STATION_ACTIVE_FLAG; plfxlc_send_packet_from_data_queue(usb); break; case STATION_CONNECT_MESSAGE: usb->link_up = 1; dev_dbg(&usb->intf->dev, "ST_CONNECT_MSG packet receipt\n"); break; case STATION_DISCONNECT_MESSAGE: usb->link_up = 0; dev_dbg(&usb->intf->dev, "ST_DISCONN_MSG packet receipt\n"); break; default: dev_dbg(&usb->intf->dev, "Unknown packet receipt\n"); break; } resubmit: r = usb_submit_urb(urb, GFP_ATOMIC); if (r) dev_dbg(plfxlc_urb_dev(urb), "urb %p resubmit fail (%d)\n", urb, r); } static struct urb *alloc_rx_urb(struct plfxlc_usb *usb) { struct usb_device *udev = plfxlc_usb_to_usbdev(usb); struct urb *urb; void *buffer; urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return NULL; buffer = usb_alloc_coherent(udev, USB_MAX_RX_SIZE, GFP_KERNEL, &urb->transfer_dma); if (!buffer) { usb_free_urb(urb); return NULL; } usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN), buffer, USB_MAX_RX_SIZE, rx_urb_complete, usb); urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; return urb; } static void free_rx_urb(struct urb *urb) { if (!urb) return; usb_free_coherent(urb->dev, urb->transfer_buffer_length, urb->transfer_buffer, urb->transfer_dma); usb_free_urb(urb); } static int __lf_x_usb_enable_rx(struct plfxlc_usb *usb) { struct plfxlc_usb_rx *rx = &usb->rx; struct urb **urbs; int i, r; r = -ENOMEM; urbs = kcalloc(RX_URBS_COUNT, sizeof(struct urb *), GFP_KERNEL); if (!urbs) goto error; for (i = 0; i < RX_URBS_COUNT; i++) { urbs[i] = alloc_rx_urb(usb); if (!urbs[i]) goto error; } spin_lock_irq(&rx->lock); dev_dbg(plfxlc_usb_dev(usb), "irq_disabled %d\n", irqs_disabled()); if (rx->urbs) { spin_unlock_irq(&rx->lock); r = 0; goto error; } rx->urbs = urbs; rx->urbs_count = RX_URBS_COUNT; spin_unlock_irq(&rx->lock); for (i = 0; i < RX_URBS_COUNT; i++) { r = usb_submit_urb(urbs[i], GFP_KERNEL); if (r) goto error_submit; } return 0; error_submit: for (i = 0; i < RX_URBS_COUNT; i++) usb_kill_urb(urbs[i]); spin_lock_irq(&rx->lock); rx->urbs = NULL; rx->urbs_count = 0; spin_unlock_irq(&rx->lock); error: if (urbs) { for (i = 0; i < RX_URBS_COUNT; i++) free_rx_urb(urbs[i]); } kfree(urbs); return r; } int plfxlc_usb_enable_rx(struct plfxlc_usb *usb) { struct plfxlc_usb_rx *rx = &usb->rx; int r; mutex_lock(&rx->setup_mutex); r = __lf_x_usb_enable_rx(usb); if (!r) usb->rx_usb_enabled = 1; mutex_unlock(&rx->setup_mutex); return r; } static void __lf_x_usb_disable_rx(struct plfxlc_usb *usb) { struct plfxlc_usb_rx *rx = &usb->rx; unsigned long flags; unsigned int count; struct urb **urbs; int i; spin_lock_irqsave(&rx->lock, flags); urbs = rx->urbs; count = rx->urbs_count; spin_unlock_irqrestore(&rx->lock, flags); if (!urbs) return; for (i = 0; i < count; i++) { usb_kill_urb(urbs[i]); free_rx_urb(urbs[i]); } kfree(urbs); rx->urbs = NULL; rx->urbs_count = 0; } void plfxlc_usb_disable_rx(struct plfxlc_usb *usb) { struct plfxlc_usb_rx *rx = &usb->rx; mutex_lock(&rx->setup_mutex); __lf_x_usb_disable_rx(usb); usb->rx_usb_enabled = 0; mutex_unlock(&rx->setup_mutex); } void plfxlc_usb_disable_tx(struct plfxlc_usb *usb) { struct plfxlc_usb_tx *tx = &usb->tx; unsigned long flags; clear_bit(PLF_BIT_ENABLED, &tx->enabled); /* kill all submitted tx-urbs */ usb_kill_anchored_urbs(&tx->submitted); spin_lock_irqsave(&tx->lock, flags); WARN_ON(!skb_queue_empty(&tx->submitted_skbs)); WARN_ON(tx->submitted_urbs != 0); tx->submitted_urbs = 0; spin_unlock_irqrestore(&tx->lock, flags); /* The stopped state is ignored, relying on ieee80211_wake_queues() * in a potentionally following plfxlc_usb_enable_tx(). */ } void plfxlc_usb_enable_tx(struct plfxlc_usb *usb) { struct plfxlc_usb_tx *tx = &usb->tx; unsigned long flags; spin_lock_irqsave(&tx->lock, flags); set_bit(PLF_BIT_ENABLED, &tx->enabled); tx->submitted_urbs = 0; ieee80211_wake_queues(plfxlc_usb_to_hw(usb)); tx->stopped = 0; spin_unlock_irqrestore(&tx->lock, flags); } void plfxlc_tx_urb_complete(struct urb *urb) { struct ieee80211_tx_info *info; struct plfxlc_usb *usb; struct sk_buff *skb; skb = urb->context; info = IEEE80211_SKB_CB(skb); /* grab 'usb' pointer before handing off the skb (since * it might be freed by plfxlc_mac_tx_to_dev or mac80211) */ usb = &plfxlc_hw_mac(info->rate_driver_data[0])->chip.usb; switch (urb->status) { case 0: break; case -ESHUTDOWN: case -EINVAL: case -ENODEV: case -ENOENT: case -ECONNRESET: case -EPIPE: dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status); break; default: dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status); return; } plfxlc_mac_tx_to_dev(skb, urb->status); plfxlc_send_packet_from_data_queue(usb); usb_free_urb(urb); } static inline void init_usb_rx(struct plfxlc_usb *usb) { struct plfxlc_usb_rx *rx = &usb->rx; spin_lock_init(&rx->lock); mutex_init(&rx->setup_mutex); if (interface_to_usbdev(usb->intf)->speed == USB_SPEED_HIGH) rx->usb_packet_size = 512; else rx->usb_packet_size = 64; if (rx->fragment_length != 0) dev_dbg(plfxlc_usb_dev(usb), "fragment_length error\n"); } static inline void init_usb_tx(struct plfxlc_usb *usb) { struct plfxlc_usb_tx *tx = &usb->tx; spin_lock_init(&tx->lock); clear_bit(PLF_BIT_ENABLED, &tx->enabled); tx->stopped = 0; skb_queue_head_init(&tx->submitted_skbs); init_usb_anchor(&tx->submitted); } void plfxlc_usb_init(struct plfxlc_usb *usb, struct ieee80211_hw *hw, struct usb_interface *intf) { memset(usb, 0, sizeof(*usb)); usb->intf = usb_get_intf(intf); usb_set_intfdata(usb->intf, hw); init_usb_tx(usb); init_usb_rx(usb); } void plfxlc_usb_release(struct plfxlc_usb *usb) { plfxlc_op_stop(plfxlc_usb_to_hw(usb), false); plfxlc_usb_disable_tx(usb); plfxlc_usb_disable_rx(usb); usb_set_intfdata(usb->intf, NULL); usb_put_intf(usb->intf); } const char *plfxlc_speed(enum usb_device_speed speed) { switch (speed) { case USB_SPEED_LOW: return "low"; case USB_SPEED_FULL: return "full"; case USB_SPEED_HIGH: return "high"; default: return "unknown"; } } int plfxlc_usb_init_hw(struct plfxlc_usb *usb) { int r; r = usb_reset_configuration(plfxlc_usb_to_usbdev(usb)); if (r) { dev_err(plfxlc_usb_dev(usb), "cfg reset failed (%d)\n", r); return r; } return 0; } static void get_usb_req(struct usb_device *udev, void *buffer, u32 buffer_len, enum plf_usb_req_enum usb_req_id, struct plf_usb_req *usb_req) { __be32 payload_len_nw = cpu_to_be32(buffer_len + FCS_LEN); const u8 *buffer_src_p = buffer; u8 *buffer_dst = usb_req->buf; u32 temp_usb_len = 0; usb_req->id = cpu_to_be32(usb_req_id); usb_req->len = cpu_to_be32(0); /* Copy buffer length into the transmitted buffer, as it is important * for the Rx MAC to know its exact length. */ if (usb_req->id == cpu_to_be32(USB_REQ_BEACON_WR)) { memcpy(buffer_dst, &payload_len_nw, sizeof(payload_len_nw)); buffer_dst += sizeof(payload_len_nw); temp_usb_len += sizeof(payload_len_nw); } memcpy(buffer_dst, buffer_src_p, buffer_len); buffer_dst += buffer_len; buffer_src_p += buffer_len; temp_usb_len += buffer_len; /* Set the FCS_LEN (4) bytes as 0 for CRC checking. */ memset(buffer_dst, 0, FCS_LEN); buffer_dst += FCS_LEN; temp_usb_len += FCS_LEN; /* Round the packet to be transmitted to 4 bytes. */ if (temp_usb_len % PURELIFI_BYTE_NUM_ALIGNMENT) { memset(buffer_dst, 0, PURELIFI_BYTE_NUM_ALIGNMENT - (temp_usb_len % PURELIFI_BYTE_NUM_ALIGNMENT)); buffer_dst += PURELIFI_BYTE_NUM_ALIGNMENT - (temp_usb_len % PURELIFI_BYTE_NUM_ALIGNMENT); temp_usb_len += PURELIFI_BYTE_NUM_ALIGNMENT - (temp_usb_len % PURELIFI_BYTE_NUM_ALIGNMENT); } usb_req->len = cpu_to_be32(temp_usb_len); } int plfxlc_usb_wreq_async(struct plfxlc_usb *usb, const u8 *buffer, int buffer_len, enum plf_usb_req_enum usb_req_id, usb_complete_t complete_fn, void *context) { struct usb_device *udev = interface_to_usbdev(usb->ez_usb); struct urb *urb; int r; urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) return -ENOMEM; usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_DATA_OUT), (void *)buffer, buffer_len, complete_fn, context); r = usb_submit_urb(urb, GFP_ATOMIC); if (r) dev_err(&udev->dev, "Async write submit failed (%d)\n", r); return r; } int plfxlc_usb_wreq(struct usb_interface *ez_usb, void *buffer, int buffer_len, enum plf_usb_req_enum usb_req_id) { struct usb_device *udev = interface_to_usbdev(ez_usb); unsigned char *dma_buffer = NULL; struct plf_usb_req usb_req; int usb_bulk_msg_len; int actual_length; int r; get_usb_req(udev, buffer, buffer_len, usb_req_id, &usb_req); usb_bulk_msg_len = sizeof(__le32) + sizeof(__le32) + be32_to_cpu(usb_req.len); dma_buffer = kmemdup(&usb_req, usb_bulk_msg_len, GFP_KERNEL); if (!dma_buffer) { r = -ENOMEM; goto error; } r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_DATA_OUT), dma_buffer, usb_bulk_msg_len, &actual_length, USB_BULK_MSG_TIMEOUT_MS); kfree(dma_buffer); error: if (r) { r = -ENOMEM; dev_err(&udev->dev, "usb_bulk_msg failed (%d)\n", r); } return r; } static void slif_data_plane_sap_timer_callb(struct timer_list *t) { struct plfxlc_usb *usb = from_timer(usb, t, tx.tx_retry_timer); plfxlc_send_packet_from_data_queue(usb); timer_setup(&usb->tx.tx_retry_timer, slif_data_plane_sap_timer_callb, 0); mod_timer(&usb->tx.tx_retry_timer, jiffies + TX_RETRY_BACKOFF_JIFF); } static void sta_queue_cleanup_timer_callb(struct timer_list *t) { struct plfxlc_usb *usb = from_timer(usb, t, sta_queue_cleanup); struct plfxlc_usb_tx *tx = &usb->tx; int sidx; for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) { if (!(tx->station[sidx].flag & STATION_CONNECTED_FLAG)) continue; if (tx->station[sidx].flag & STATION_HEARTBEAT_FLAG) { tx->station[sidx].flag ^= STATION_HEARTBEAT_FLAG; } else { eth_zero_addr(tx->station[sidx].mac); tx->station[sidx].flag = 0; } } timer_setup(&usb->sta_queue_cleanup, sta_queue_cleanup_timer_callb, 0); mod_timer(&usb->sta_queue_cleanup, jiffies + STA_QUEUE_CLEANUP_JIFF); } static int probe(struct usb_interface *intf, const struct usb_device_id *id) { u8 serial_number[PURELIFI_SERIAL_LEN]; struct ieee80211_hw *hw = NULL; struct plfxlc_usb_tx *tx; struct plfxlc_chip *chip; struct plfxlc_usb *usb; u8 hw_address[ETH_ALEN]; unsigned int i; int r = 0; hw = plfxlc_mac_alloc_hw(intf); if (!hw) { r = -ENOMEM; goto error; } chip = &plfxlc_hw_mac(hw)->chip; usb = &chip->usb; usb->ez_usb = intf; tx = &usb->tx; r = plfxlc_upload_mac_and_serial(intf, hw_address, serial_number); if (r) { dev_err(&intf->dev, "MAC and Serial upload failed (%d)\n", r); goto error; } chip->unit_type = STA; dev_err(&intf->dev, "Unit type is station"); r = plfxlc_mac_preinit_hw(hw, hw_address); if (r) { dev_err(&intf->dev, "Init mac failed (%d)\n", r); goto error; } r = ieee80211_register_hw(hw); if (r) { dev_err(&intf->dev, "Register device failed (%d)\n", r); goto error; } if ((le16_to_cpu(interface_to_usbdev(intf)->descriptor.idVendor) == PURELIFI_XL_VENDOR_ID_0) && (le16_to_cpu(interface_to_usbdev(intf)->descriptor.idProduct) == PURELIFI_XL_PRODUCT_ID_0)) { r = plfxlc_download_xl_firmware(intf); } else { r = plfxlc_download_fpga(intf); } if (r != 0) { dev_err(&intf->dev, "FPGA download failed (%d)\n", r); goto error; } tx->mac_fifo_full = 0; spin_lock_init(&tx->lock); msleep(PLF_MSLEEP_TIME); r = plfxlc_usb_init_hw(usb); if (r < 0) { dev_err(&intf->dev, "usb_init_hw failed (%d)\n", r); goto error; } msleep(PLF_MSLEEP_TIME); r = plfxlc_chip_switch_radio(chip, PLFXLC_RADIO_ON); if (r < 0) { dev_dbg(&intf->dev, "chip_switch_radio_on failed (%d)\n", r); goto error; } msleep(PLF_MSLEEP_TIME); r = plfxlc_chip_set_rate(chip, 8); if (r < 0) { dev_dbg(&intf->dev, "chip_set_rate failed (%d)\n", r); goto error; } msleep(PLF_MSLEEP_TIME); r = plfxlc_usb_wreq(usb->ez_usb, hw_address, ETH_ALEN, USB_REQ_MAC_WR); if (r < 0) { dev_dbg(&intf->dev, "MAC_WR failure (%d)\n", r); goto error; } plfxlc_chip_enable_rxtx(chip); /* Initialise the data plane Tx queue */ for (i = 0; i < MAX_STA_NUM; i++) { skb_queue_head_init(&tx->station[i].data_list); tx->station[i].flag = 0; } tx->station[STA_BROADCAST_INDEX].flag |= STATION_CONNECTED_FLAG; for (i = 0; i < ETH_ALEN; i++) tx->station[STA_BROADCAST_INDEX].mac[i] = 0xFF; timer_setup(&tx->tx_retry_timer, slif_data_plane_sap_timer_callb, 0); tx->tx_retry_timer.expires = jiffies + TX_RETRY_BACKOFF_JIFF; add_timer(&tx->tx_retry_timer); timer_setup(&usb->sta_queue_cleanup, sta_queue_cleanup_timer_callb, 0); usb->sta_queue_cleanup.expires = jiffies + STA_QUEUE_CLEANUP_JIFF; add_timer(&usb->sta_queue_cleanup); plfxlc_mac_init_hw(hw); usb->initialized = true; return 0; error: if (hw) { plfxlc_mac_release(plfxlc_hw_mac(hw)); ieee80211_unregister_hw(hw); ieee80211_free_hw(hw); } dev_err(&intf->dev, "pureLifi:Device error"); return r; } static void disconnect(struct usb_interface *intf) { struct ieee80211_hw *hw = plfxlc_intf_to_hw(intf); struct plfxlc_mac *mac; struct plfxlc_usb *usb; /* Either something really bad happened, or * we're just dealing with a DEVICE_INSTALLER. */ if (!hw) return; mac = plfxlc_hw_mac(hw); usb = &mac->chip.usb; timer_delete_sync(&usb->tx.tx_retry_timer); timer_delete_sync(&usb->sta_queue_cleanup); ieee80211_unregister_hw(hw); plfxlc_chip_disable_rxtx(&mac->chip); /* If the disconnect has been caused by a removal of the * driver module, the reset allows reloading of the driver. If the * reset will not be executed here, the upload of the firmware in the * probe function caused by the reloading of the driver will fail. */ usb_reset_device(interface_to_usbdev(intf)); plfxlc_mac_release(mac); ieee80211_free_hw(hw); } static void plfxlc_usb_resume(struct plfxlc_usb *usb) { struct plfxlc_mac *mac = plfxlc_usb_to_mac(usb); int r; r = plfxlc_op_start(plfxlc_usb_to_hw(usb)); if (r < 0) { dev_warn(plfxlc_usb_dev(usb), "Device resume failed (%d)\n", r); if (usb->was_running) set_bit(PURELIFI_DEVICE_RUNNING, &mac->flags); usb_queue_reset_device(usb->intf); return; } if (mac->type != NL80211_IFTYPE_UNSPECIFIED) { r = plfxlc_restore_settings(mac); if (r < 0) { dev_dbg(plfxlc_usb_dev(usb), "Restore failed (%d)\n", r); return; } } } static void plfxlc_usb_stop(struct plfxlc_usb *usb) { plfxlc_op_stop(plfxlc_usb_to_hw(usb), false); plfxlc_usb_disable_tx(usb); plfxlc_usb_disable_rx(usb); usb->initialized = false; } static int pre_reset(struct usb_interface *intf) { struct ieee80211_hw *hw = usb_get_intfdata(intf); struct plfxlc_mac *mac; struct plfxlc_usb *usb; if (!hw || intf->condition != USB_INTERFACE_BOUND) return 0; mac = plfxlc_hw_mac(hw); usb = &mac->chip.usb; usb->was_running = test_bit(PURELIFI_DEVICE_RUNNING, &mac->flags); plfxlc_usb_stop(usb); return 0; } static int post_reset(struct usb_interface *intf) { struct ieee80211_hw *hw = usb_get_intfdata(intf); struct plfxlc_mac *mac; struct plfxlc_usb *usb; if (!hw || intf->condition != USB_INTERFACE_BOUND) return 0; mac = plfxlc_hw_mac(hw); usb = &mac->chip.usb; if (usb->was_running) plfxlc_usb_resume(usb); return 0; } #ifdef CONFIG_PM static struct plfxlc_usb *get_plfxlc_usb(struct usb_interface *intf) { struct ieee80211_hw *hw = plfxlc_intf_to_hw(intf); struct plfxlc_mac *mac; /* Either something really bad happened, or * we're just dealing with a DEVICE_INSTALLER. */ if (!hw) return NULL; mac = plfxlc_hw_mac(hw); return &mac->chip.usb; } static int suspend(struct usb_interface *interface, pm_message_t message) { struct plfxlc_usb *pl = get_plfxlc_usb(interface); struct plfxlc_mac *mac = plfxlc_usb_to_mac(pl); if (!pl) return -ENODEV; if (pl->initialized == 0) return 0; pl->was_running = test_bit(PURELIFI_DEVICE_RUNNING, &mac->flags); plfxlc_usb_stop(pl); return 0; } static int resume(struct usb_interface *interface) { struct plfxlc_usb *pl = get_plfxlc_usb(interface); if (!pl) return -ENODEV; if (pl->was_running) plfxlc_usb_resume(pl); return 0; } #endif static struct usb_driver driver = { .name = KBUILD_MODNAME, .id_table = usb_ids, .probe = probe, .disconnect = disconnect, .pre_reset = pre_reset, .post_reset = post_reset, #ifdef CONFIG_PM .suspend = suspend, .resume = resume, #endif .disable_hub_initiated_lpm = 1, }; static int __init usb_init(void) { int r; r = usb_register(&driver); if (r) { pr_err("%s usb_register() failed %d\n", driver.name, r); return r; } pr_debug("Driver initialized :%s\n", driver.name); return 0; } static void __exit usb_exit(void) { usb_deregister(&driver); pr_debug("%s %s\n", driver.name, __func__); } MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("USB driver for pureLiFi devices"); MODULE_AUTHOR("pureLiFi"); MODULE_VERSION("1.0"); MODULE_FIRMWARE("plfxlc/lifi-x.bin"); MODULE_DEVICE_TABLE(usb, usb_ids); module_init(usb_init); module_exit(usb_exit); |
| 2 2 2 2 2 2 4 4 4 4 3 4 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2005-2006 Micronas USA Inc. */ #include <linux/module.h> #include <linux/delay.h> #include <linux/sched.h> #include <linux/spinlock.h> #include <linux/unistd.h> #include <linux/time.h> #include <linux/mm.h> #include <linux/vmalloc.h> #include <linux/device.h> #include <linux/i2c.h> #include <linux/firmware.h> #include <linux/mutex.h> #include <linux/uaccess.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <media/tuner.h> #include <media/v4l2-common.h> #include <media/v4l2-event.h> #include "go7007-priv.h" /* * Wait for an interrupt to be delivered from the GO7007SB and return * the associated value and data. * * Must be called with the hw_lock held. */ int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data) { go->interrupt_available = 0; go->hpi_ops->read_interrupt(go); if (wait_event_timeout(go->interrupt_waitq, go->interrupt_available, 5*HZ) < 0) { v4l2_err(&go->v4l2_dev, "timeout waiting for read interrupt\n"); return -1; } if (!go->interrupt_available) return -1; go->interrupt_available = 0; *value = go->interrupt_value & 0xfffe; *data = go->interrupt_data; return 0; } EXPORT_SYMBOL(go7007_read_interrupt); /* * Read a register/address on the GO7007SB. * * Must be called with the hw_lock held. */ int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data) { int count = 100; u16 value; if (go7007_write_interrupt(go, 0x0010, addr) < 0) return -EIO; while (count-- > 0) { if (go7007_read_interrupt(go, &value, data) == 0 && value == 0xa000) return 0; } return -EIO; } EXPORT_SYMBOL(go7007_read_addr); /* * Send the boot firmware to the encoder, which just wakes it up and lets * us talk to the GPIO pins and on-board I2C adapter. * * Must be called with the hw_lock held. */ static int go7007_load_encoder(struct go7007 *go) { const struct firmware *fw_entry; char fw_name[] = "go7007/go7007fw.bin"; void *bounce; int fw_len; u16 intr_val, intr_data; if (go->boot_fw == NULL) { if (request_firmware(&fw_entry, fw_name, go->dev)) { v4l2_err(go, "unable to load firmware from file \"%s\"\n", fw_name); return -1; } if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) { v4l2_err(go, "file \"%s\" does not appear to be go7007 firmware\n", fw_name); release_firmware(fw_entry); return -1; } fw_len = fw_entry->size - 16; bounce = kmemdup(fw_entry->data + 16, fw_len, GFP_KERNEL); if (bounce == NULL) { v4l2_err(go, "unable to allocate %d bytes for firmware transfer\n", fw_len); release_firmware(fw_entry); return -1; } release_firmware(fw_entry); go->boot_fw_len = fw_len; go->boot_fw = bounce; } if (go7007_interface_reset(go) < 0 || go7007_send_firmware(go, go->boot_fw, go->boot_fw_len) < 0 || go7007_read_interrupt(go, &intr_val, &intr_data) < 0 || (intr_val & ~0x1) != 0x5a5a) { v4l2_err(go, "error transferring firmware\n"); kfree(go->boot_fw); go->boot_fw = NULL; return -1; } return 0; } MODULE_FIRMWARE("go7007/go7007fw.bin"); /* * Boot the encoder and register the I2C adapter if requested. Do the * minimum initialization necessary, since the board-specific code may * still need to probe the board ID. * * Must NOT be called with the hw_lock held. */ int go7007_boot_encoder(struct go7007 *go, int init_i2c) { int ret; mutex_lock(&go->hw_lock); ret = go7007_load_encoder(go); mutex_unlock(&go->hw_lock); if (ret < 0) return -1; if (!init_i2c) return 0; if (go7007_i2c_init(go) < 0) return -1; go->i2c_adapter_online = 1; return 0; } EXPORT_SYMBOL(go7007_boot_encoder); /* * Configure any hardware-related registers in the GO7007, such as GPIO * pins and bus parameters, which are board-specific. This assumes * the boot firmware has already been downloaded. * * Must be called with the hw_lock held. */ static int go7007_init_encoder(struct go7007 *go) { if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) { go7007_write_addr(go, 0x1000, 0x0811); go7007_write_addr(go, 0x1000, 0x0c11); } switch (go->board_id) { case GO7007_BOARDID_MATRIX_REV: /* Set GPIO pin 0 to be an output (audio clock control) */ go7007_write_addr(go, 0x3c82, 0x0001); go7007_write_addr(go, 0x3c80, 0x00fe); break; case GO7007_BOARDID_ADLINK_MPG24: /* set GPIO5 to be an output, currently low */ go7007_write_addr(go, 0x3c82, 0x0000); go7007_write_addr(go, 0x3c80, 0x00df); break; case GO7007_BOARDID_ADS_USBAV_709: /* GPIO pin 0: audio clock control */ /* pin 2: TW9906 reset */ /* pin 3: capture LED */ go7007_write_addr(go, 0x3c82, 0x000d); go7007_write_addr(go, 0x3c80, 0x00f2); break; } return 0; } /* * Send the boot firmware to the GO7007 and configure the registers. This * is the only way to stop the encoder once it has started streaming video. * * Must be called with the hw_lock held. */ int go7007_reset_encoder(struct go7007 *go) { if (go7007_load_encoder(go) < 0) return -1; return go7007_init_encoder(go); } /* * Attempt to instantiate an I2C client by ID, probably loading a module. */ static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *const i2c) { struct go7007 *go = i2c_get_adapdata(adapter); struct v4l2_device *v4l2_dev = &go->v4l2_dev; struct v4l2_subdev *sd; struct i2c_board_info info; memset(&info, 0, sizeof(info)); strscpy(info.type, i2c->type, sizeof(info.type)); info.addr = i2c->addr; info.flags = i2c->flags; sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL); if (sd) { if (i2c->is_video) go->sd_video = sd; if (i2c->is_audio) go->sd_audio = sd; return 0; } pr_info("go7007: probing for module i2c:%s failed\n", i2c->type); return -EINVAL; } /* * Detach and unregister the encoder. The go7007 struct won't be freed * until v4l2 finishes releasing its resources and all associated fds are * closed by applications. */ static void go7007_remove(struct v4l2_device *v4l2_dev) { struct go7007 *go = container_of(v4l2_dev, struct go7007, v4l2_dev); v4l2_device_unregister(v4l2_dev); if (go->hpi_ops->release) go->hpi_ops->release(go); if (go->i2c_adapter_online) { i2c_del_adapter(&go->i2c_adapter); go->i2c_adapter_online = 0; } kfree(go->boot_fw); go7007_v4l2_remove(go); kfree(go); } /* * Finalize the GO7007 hardware setup, register the on-board I2C adapter * (if used on this board), load the I2C client driver for the sensor * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2 * interfaces. * * Must NOT be called with the hw_lock held. */ int go7007_register_encoder(struct go7007 *go, unsigned num_i2c_devs) { int i, ret; dev_info(go->dev, "go7007: registering new %s\n", go->name); go->v4l2_dev.release = go7007_remove; ret = v4l2_device_register(go->dev, &go->v4l2_dev); if (ret < 0) return ret; mutex_lock(&go->hw_lock); ret = go7007_init_encoder(go); mutex_unlock(&go->hw_lock); if (ret < 0) return ret; ret = go7007_v4l2_ctrl_init(go); if (ret < 0) return ret; if (!go->i2c_adapter_online && go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) { ret = go7007_i2c_init(go); if (ret < 0) return ret; go->i2c_adapter_online = 1; } if (go->i2c_adapter_online) { if (go->board_id == GO7007_BOARDID_ADS_USBAV_709) { /* Reset the TW9906 */ go7007_write_addr(go, 0x3c82, 0x0009); msleep(50); go7007_write_addr(go, 0x3c82, 0x000d); } for (i = 0; i < num_i2c_devs; ++i) init_i2c_module(&go->i2c_adapter, &go->board_info->i2c_devs[i]); if (go->tuner_type >= 0) { struct tuner_setup setup = { .addr = ADDR_UNSET, .type = go->tuner_type, .mode_mask = T_ANALOG_TV, }; v4l2_device_call_all(&go->v4l2_dev, 0, tuner, s_type_addr, &setup); } if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) v4l2_subdev_call(go->sd_video, video, s_routing, 0, 0, go->channel_number + 1); } ret = go7007_v4l2_init(go); if (ret < 0) return ret; if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) { go->audio_enabled = 1; go7007_snd_init(go); } return 0; } EXPORT_SYMBOL(go7007_register_encoder); /* * Send the encode firmware to the encoder, which will cause it * to immediately start delivering the video and audio streams. * * Must be called with the hw_lock held. */ int go7007_start_encoder(struct go7007 *go) { u8 *fw; int fw_len, rv = 0, i, x, y; u16 intr_val, intr_data; go->modet_enable = 0; for (i = 0; i < 4; i++) go->modet[i].enable = 0; switch (v4l2_ctrl_g_ctrl(go->modet_mode)) { case V4L2_DETECT_MD_MODE_GLOBAL: memset(go->modet_map, 0, sizeof(go->modet_map)); go->modet[0].enable = 1; go->modet_enable = 1; break; case V4L2_DETECT_MD_MODE_REGION_GRID: for (y = 0; y < go->height / 16; y++) { for (x = 0; x < go->width / 16; x++) { int idx = y * go->width / 16 + x; go->modet[go->modet_map[idx]].enable = 1; } } go->modet_enable = 1; break; } if (go->dvd_mode) go->modet_enable = 0; if (go7007_construct_fw_image(go, &fw, &fw_len) < 0) return -1; if (go7007_send_firmware(go, fw, fw_len) < 0 || go7007_read_interrupt(go, &intr_val, &intr_data) < 0) { v4l2_err(&go->v4l2_dev, "error transferring firmware\n"); rv = -1; goto start_error; } go->state = STATE_DATA; go->parse_length = 0; go->seen_frame = 0; if (go7007_stream_start(go) < 0) { v4l2_err(&go->v4l2_dev, "error starting stream transfer\n"); rv = -1; goto start_error; } start_error: kfree(fw); return rv; } /* * Store a byte in the current video buffer, if there is one. */ static inline void store_byte(struct go7007_buffer *vb, u8 byte) { if (vb && vb->vb.vb2_buf.planes[0].bytesused < GO7007_BUF_SIZE) { u8 *ptr = vb2_plane_vaddr(&vb->vb.vb2_buf, 0); ptr[vb->vb.vb2_buf.planes[0].bytesused++] = byte; } } static void go7007_set_motion_regions(struct go7007 *go, struct go7007_buffer *vb, u32 motion_regions) { if (motion_regions != go->modet_event_status) { struct v4l2_event ev = { .type = V4L2_EVENT_MOTION_DET, .u.motion_det = { .flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ, .frame_sequence = vb->vb.sequence, .region_mask = motion_regions, }, }; v4l2_event_queue(&go->vdev, &ev); go->modet_event_status = motion_regions; } } /* * Determine regions with motion and send a motion detection event * in case of changes. */ static void go7007_motion_regions(struct go7007 *go, struct go7007_buffer *vb) { u32 *bytesused = &vb->vb.vb2_buf.planes[0].bytesused; unsigned motion[4] = { 0, 0, 0, 0 }; u32 motion_regions = 0; unsigned stride = (go->width + 7) >> 3; unsigned x, y; int i; for (i = 0; i < 216; ++i) store_byte(vb, go->active_map[i]); for (y = 0; y < go->height / 16; y++) { for (x = 0; x < go->width / 16; x++) { if (!(go->active_map[y * stride + (x >> 3)] & (1 << (x & 7)))) continue; motion[go->modet_map[y * (go->width / 16) + x]]++; } } motion_regions = ((motion[0] > 0) << 0) | ((motion[1] > 0) << 1) | ((motion[2] > 0) << 2) | ((motion[3] > 0) << 3); *bytesused -= 216; go7007_set_motion_regions(go, vb, motion_regions); } /* * Deliver the last video buffer and get a new one to start writing to. */ static struct go7007_buffer *frame_boundary(struct go7007 *go, struct go7007_buffer *vb) { u32 *bytesused; struct go7007_buffer *vb_tmp = NULL; unsigned long flags; if (vb == NULL) { spin_lock_irqsave(&go->spinlock, flags); if (!list_empty(&go->vidq_active)) vb = go->active_buf = list_first_entry(&go->vidq_active, struct go7007_buffer, list); spin_unlock_irqrestore(&go->spinlock, flags); go->next_seq++; return vb; } bytesused = &vb->vb.vb2_buf.planes[0].bytesused; vb->vb.sequence = go->next_seq++; if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE) go7007_motion_regions(go, vb); else go7007_set_motion_regions(go, vb, 0); vb->vb.vb2_buf.timestamp = ktime_get_ns(); vb_tmp = vb; spin_lock_irqsave(&go->spinlock, flags); list_del(&vb->list); if (list_empty(&go->vidq_active)) vb = NULL; else vb = list_first_entry(&go->vidq_active, struct go7007_buffer, list); go->active_buf = vb; spin_unlock_irqrestore(&go->spinlock, flags); vb2_buffer_done(&vb_tmp->vb.vb2_buf, VB2_BUF_STATE_DONE); return vb; } static void write_bitmap_word(struct go7007 *go) { int x, y, i, stride = ((go->width >> 4) + 7) >> 3; for (i = 0; i < 16; ++i) { y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); if (stride * y + (x >> 3) < sizeof(go->active_map)) go->active_map[stride * y + (x >> 3)] |= (go->modet_word & 1) << (x & 0x7); go->modet_word >>= 1; } } /* * Parse a chunk of the video stream into frames. The frames are not * delimited by the hardware, so we have to parse the frame boundaries * based on the type of video stream we're receiving. */ void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) { struct go7007_buffer *vb = go->active_buf; int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1; switch (go->format) { case V4L2_PIX_FMT_MPEG4: seq_start_code = 0xB0; gop_start_code = 0xB3; frame_start_code = 0xB6; break; case V4L2_PIX_FMT_MPEG1: case V4L2_PIX_FMT_MPEG2: seq_start_code = 0xB3; gop_start_code = 0xB8; frame_start_code = 0x00; break; } for (i = 0; i < length; ++i) { if (vb && vb->vb.vb2_buf.planes[0].bytesused >= GO7007_BUF_SIZE - 3) { v4l2_info(&go->v4l2_dev, "dropping oversized frame\n"); vb2_set_plane_payload(&vb->vb.vb2_buf, 0, 0); vb->frame_offset = 0; vb->modet_active = 0; vb = go->active_buf = NULL; } switch (go->state) { case STATE_DATA: switch (buf[i]) { case 0x00: go->state = STATE_00; break; case 0xFF: go->state = STATE_FF; break; default: store_byte(vb, buf[i]); break; } break; case STATE_00: switch (buf[i]) { case 0x00: go->state = STATE_00_00; break; case 0xFF: store_byte(vb, 0x00); go->state = STATE_FF; break; default: store_byte(vb, 0x00); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_00_00: switch (buf[i]) { case 0x00: store_byte(vb, 0x00); /* go->state remains STATE_00_00 */ break; case 0x01: go->state = STATE_00_00_01; break; case 0xFF: store_byte(vb, 0x00); store_byte(vb, 0x00); go->state = STATE_FF; break; default: store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_00_00_01: if (buf[i] == 0xF8 && go->modet_enable == 0) { /* MODET start code, but MODET not enabled */ store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, 0x01); store_byte(vb, 0xF8); go->state = STATE_DATA; break; } /* If this is the start of a new MPEG frame, * get a new buffer */ if ((go->format == V4L2_PIX_FMT_MPEG1 || go->format == V4L2_PIX_FMT_MPEG2 || go->format == V4L2_PIX_FMT_MPEG4) && (buf[i] == seq_start_code || buf[i] == gop_start_code || buf[i] == frame_start_code)) { if (vb == NULL || go->seen_frame) vb = frame_boundary(go, vb); go->seen_frame = buf[i] == frame_start_code; if (vb && go->seen_frame) vb->frame_offset = vb->vb.vb2_buf.planes[0].bytesused; } /* Handle any special chunk types, or just write the * start code to the (potentially new) buffer */ switch (buf[i]) { case 0xF5: /* timestamp */ go->parse_length = 12; go->state = STATE_UNPARSED; break; case 0xF6: /* vbi */ go->state = STATE_VBI_LEN_A; break; case 0xF8: /* MD map */ go->parse_length = 0; memset(go->active_map, 0, sizeof(go->active_map)); go->state = STATE_MODET_MAP; break; case 0xFF: /* Potential JPEG start code */ store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, 0x01); go->state = STATE_FF; break; default: store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, 0x01); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_FF: switch (buf[i]) { case 0x00: store_byte(vb, 0xFF); go->state = STATE_00; break; case 0xFF: store_byte(vb, 0xFF); /* go->state remains STATE_FF */ break; case 0xD8: if (go->format == V4L2_PIX_FMT_MJPEG) vb = frame_boundary(go, vb); fallthrough; default: store_byte(vb, 0xFF); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_VBI_LEN_A: go->parse_length = buf[i] << 8; go->state = STATE_VBI_LEN_B; break; case STATE_VBI_LEN_B: go->parse_length |= buf[i]; if (go->parse_length > 0) go->state = STATE_UNPARSED; else go->state = STATE_DATA; break; case STATE_MODET_MAP: if (go->parse_length < 204) { if (go->parse_length & 1) { go->modet_word |= buf[i]; write_bitmap_word(go); } else go->modet_word = buf[i] << 8; } else if (go->parse_length == 207 && vb) { vb->modet_active = buf[i]; } if (++go->parse_length == 208) go->state = STATE_DATA; break; case STATE_UNPARSED: if (--go->parse_length == 0) go->state = STATE_DATA; break; } } } EXPORT_SYMBOL(go7007_parse_video_stream); /* * Allocate a new go7007 struct. Used by the hardware-specific probe. */ struct go7007 *go7007_alloc(const struct go7007_board_info *board, struct device *dev) { struct go7007 *go; go = kzalloc(sizeof(struct go7007), GFP_KERNEL); if (go == NULL) return NULL; go->dev = dev; go->board_info = board; go->tuner_type = -1; mutex_init(&go->hw_lock); init_waitqueue_head(&go->frame_waitq); spin_lock_init(&go->spinlock); go->status = STATUS_INIT; init_waitqueue_head(&go->interrupt_waitq); go7007_update_board(go); go->format = V4L2_PIX_FMT_MJPEG; go->bitrate = 1500000; go->fps_scale = 1; go->aspect_ratio = GO7007_RATIO_1_1; return go; } EXPORT_SYMBOL(go7007_alloc); void go7007_update_board(struct go7007 *go) { const struct go7007_board_info *board = go->board_info; if (board->sensor_flags & GO7007_SENSOR_TV) { go->standard = GO7007_STD_NTSC; go->std = V4L2_STD_NTSC_M; go->width = 720; go->height = 480; go->sensor_framerate = 30000; } else { go->standard = GO7007_STD_OTHER; go->width = board->sensor_width; go->height = board->sensor_height; go->sensor_framerate = board->sensor_framerate; } go->encoder_v_offset = board->sensor_v_offset; go->encoder_h_offset = board->sensor_h_offset; } EXPORT_SYMBOL(go7007_update_board); MODULE_DESCRIPTION("WIS GO7007 MPEG encoder support"); MODULE_LICENSE("GPL v2"); |
| 3232 3227 31 31 3225 3225 2 3223 31 3230 3232 3223 3222 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 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra * * Provides a framework for enqueueing and running callbacks from hardirq * context. The enqueueing is NMI-safe. */ #include <linux/bug.h> #include <linux/kernel.h> #include <linux/export.h> #include <linux/irq_work.h> #include <linux/percpu.h> #include <linux/hardirq.h> #include <linux/irqflags.h> #include <linux/sched.h> #include <linux/tick.h> #include <linux/cpu.h> #include <linux/notifier.h> #include <linux/smp.h> #include <linux/smpboot.h> #include <asm/processor.h> #include <linux/kasan.h> #include <trace/events/ipi.h> static DEFINE_PER_CPU(struct llist_head, raised_list); static DEFINE_PER_CPU(struct llist_head, lazy_list); static DEFINE_PER_CPU(struct task_struct *, irq_workd); static void wake_irq_workd(void) { struct task_struct *tsk = __this_cpu_read(irq_workd); if (!llist_empty(this_cpu_ptr(&lazy_list)) && tsk) wake_up_process(tsk); } #ifdef CONFIG_SMP static void irq_work_wake(struct irq_work *entry) { wake_irq_workd(); } static DEFINE_PER_CPU(struct irq_work, irq_work_wakeup) = IRQ_WORK_INIT_HARD(irq_work_wake); #endif static int irq_workd_should_run(unsigned int cpu) { return !llist_empty(this_cpu_ptr(&lazy_list)); } /* * Claim the entry so that no one else will poke at it. */ static bool irq_work_claim(struct irq_work *work) { int oflags; oflags = atomic_fetch_or(IRQ_WORK_CLAIMED | CSD_TYPE_IRQ_WORK, &work->node.a_flags); /* * If the work is already pending, no need to raise the IPI. * The pairing smp_mb() in irq_work_single() makes sure * everything we did before is visible. */ if (oflags & IRQ_WORK_PENDING) return false; return true; } void __weak arch_irq_work_raise(void) { /* * Lame architectures will get the timer tick callback */ } static __always_inline void irq_work_raise(struct irq_work *work) { if (trace_ipi_send_cpu_enabled() && arch_irq_work_has_interrupt()) trace_ipi_send_cpu(smp_processor_id(), _RET_IP_, work->func); arch_irq_work_raise(); } /* Enqueue on current CPU, work must already be claimed and preempt disabled */ static void __irq_work_queue_local(struct irq_work *work) { struct llist_head *list; bool rt_lazy_work = false; bool lazy_work = false; int work_flags; work_flags = atomic_read(&work->node.a_flags); if (work_flags & IRQ_WORK_LAZY) lazy_work = true; else if (IS_ENABLED(CONFIG_PREEMPT_RT) && !(work_flags & IRQ_WORK_HARD_IRQ)) rt_lazy_work = true; if (lazy_work || rt_lazy_work) list = this_cpu_ptr(&lazy_list); else list = this_cpu_ptr(&raised_list); if (!llist_add(&work->node.llist, list)) return; /* If the work is "lazy", handle it from next tick if any */ if (!lazy_work || tick_nohz_tick_stopped()) irq_work_raise(work); } /* Enqueue the irq work @work on the current CPU */ bool irq_work_queue(struct irq_work *work) { /* Only queue if not already pending */ if (!irq_work_claim(work)) return false; /* Queue the entry and raise the IPI if needed. */ preempt_disable(); __irq_work_queue_local(work); preempt_enable(); return true; } EXPORT_SYMBOL_GPL(irq_work_queue); /* * Enqueue the irq_work @work on @cpu unless it's already pending * somewhere. * * Can be re-enqueued while the callback is still in progress. */ bool irq_work_queue_on(struct irq_work *work, int cpu) { #ifndef CONFIG_SMP return irq_work_queue(work); #else /* CONFIG_SMP: */ /* All work should have been flushed before going offline */ WARN_ON_ONCE(cpu_is_offline(cpu)); /* Only queue if not already pending */ if (!irq_work_claim(work)) return false; kasan_record_aux_stack(work); preempt_disable(); if (cpu != smp_processor_id()) { /* Arch remote IPI send/receive backend aren't NMI safe */ WARN_ON_ONCE(in_nmi()); /* * On PREEMPT_RT the items which are not marked as * IRQ_WORK_HARD_IRQ are added to the lazy list and a HARD work * item is used on the remote CPU to wake the thread. */ if (IS_ENABLED(CONFIG_PREEMPT_RT) && !(atomic_read(&work->node.a_flags) & IRQ_WORK_HARD_IRQ)) { if (!llist_add(&work->node.llist, &per_cpu(lazy_list, cpu))) goto out; work = &per_cpu(irq_work_wakeup, cpu); if (!irq_work_claim(work)) goto out; } __smp_call_single_queue(cpu, &work->node.llist); } else { __irq_work_queue_local(work); } out: preempt_enable(); return true; #endif /* CONFIG_SMP */ } bool irq_work_needs_cpu(void) { struct llist_head *raised, *lazy; raised = this_cpu_ptr(&raised_list); lazy = this_cpu_ptr(&lazy_list); if (llist_empty(raised) || arch_irq_work_has_interrupt()) if (llist_empty(lazy)) return false; /* All work should have been flushed before going offline */ WARN_ON_ONCE(cpu_is_offline(smp_processor_id())); return true; } void irq_work_single(void *arg) { struct irq_work *work = arg; int flags; /* * Clear the PENDING bit, after this point the @work can be re-used. * The PENDING bit acts as a lock, and we own it, so we can clear it * without atomic ops. */ flags = atomic_read(&work->node.a_flags); flags &= ~IRQ_WORK_PENDING; atomic_set(&work->node.a_flags, flags); /* * See irq_work_claim(). */ smp_mb(); lockdep_irq_work_enter(flags); work->func(work); lockdep_irq_work_exit(flags); /* * Clear the BUSY bit, if set, and return to the free state if no-one * else claimed it meanwhile. */ (void)atomic_cmpxchg(&work->node.a_flags, flags, flags & ~IRQ_WORK_BUSY); if ((IS_ENABLED(CONFIG_PREEMPT_RT) && !irq_work_is_hard(work)) || !arch_irq_work_has_interrupt()) rcuwait_wake_up(&work->irqwait); } static void irq_work_run_list(struct llist_head *list) { struct irq_work *work, *tmp; struct llist_node *llnode; /* * On PREEMPT_RT IRQ-work which is not marked as HARD will be processed * in a per-CPU thread in preemptible context. Only the items which are * marked as IRQ_WORK_HARD_IRQ will be processed in hardirq context. */ BUG_ON(!irqs_disabled() && !IS_ENABLED(CONFIG_PREEMPT_RT)); if (llist_empty(list)) return; llnode = llist_del_all(list); llist_for_each_entry_safe(work, tmp, llnode, node.llist) irq_work_single(work); } /* * hotplug calls this through: * hotplug_cfd() -> flush_smp_call_function_queue() */ void irq_work_run(void) { irq_work_run_list(this_cpu_ptr(&raised_list)); if (!IS_ENABLED(CONFIG_PREEMPT_RT)) irq_work_run_list(this_cpu_ptr(&lazy_list)); else wake_irq_workd(); } EXPORT_SYMBOL_GPL(irq_work_run); void irq_work_tick(void) { struct llist_head *raised = this_cpu_ptr(&raised_list); if (!llist_empty(raised) && !arch_irq_work_has_interrupt()) irq_work_run_list(raised); if (!IS_ENABLED(CONFIG_PREEMPT_RT)) irq_work_run_list(this_cpu_ptr(&lazy_list)); else wake_irq_workd(); } /* * Synchronize against the irq_work @entry, ensures the entry is not * currently in use. */ void irq_work_sync(struct irq_work *work) { lockdep_assert_irqs_enabled(); might_sleep(); if ((IS_ENABLED(CONFIG_PREEMPT_RT) && !irq_work_is_hard(work)) || !arch_irq_work_has_interrupt()) { rcuwait_wait_event(&work->irqwait, !irq_work_is_busy(work), TASK_UNINTERRUPTIBLE); return; } while (irq_work_is_busy(work)) cpu_relax(); } EXPORT_SYMBOL_GPL(irq_work_sync); static void run_irq_workd(unsigned int cpu) { irq_work_run_list(this_cpu_ptr(&lazy_list)); } static void irq_workd_setup(unsigned int cpu) { sched_set_fifo_low(current); } static struct smp_hotplug_thread irqwork_threads = { .store = &irq_workd, .setup = irq_workd_setup, .thread_should_run = irq_workd_should_run, .thread_fn = run_irq_workd, .thread_comm = "irq_work/%u", }; static __init int irq_work_init_threads(void) { if (IS_ENABLED(CONFIG_PREEMPT_RT)) BUG_ON(smpboot_register_percpu_thread(&irqwork_threads)); return 0; } early_initcall(irq_work_init_threads); |
| 22 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 | /* SPDX-License-Identifier: GPL-2.0 */ /* File: linux/xattr.h Extended attributes handling. Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org> Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved. Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com> */ #ifndef _LINUX_XATTR_H #define _LINUX_XATTR_H #include <linux/slab.h> #include <linux/types.h> #include <linux/spinlock.h> #include <linux/mm.h> #include <linux/user_namespace.h> #include <uapi/linux/xattr.h> /* List of all open_how "versions". */ #define XATTR_ARGS_SIZE_VER0 16 /* sizeof first published struct */ #define XATTR_ARGS_SIZE_LATEST XATTR_ARGS_SIZE_VER0 struct inode; struct dentry; static inline bool is_posix_acl_xattr(const char *name) { return (strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) == 0) || (strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0); } /* * struct xattr_handler: When @name is set, match attributes with exactly that * name. When @prefix is set instead, match attributes with that prefix and * with a non-empty suffix. */ struct xattr_handler { const char *name; const char *prefix; int flags; /* fs private flags */ bool (*list)(struct dentry *dentry); int (*get)(const struct xattr_handler *, struct dentry *dentry, struct inode *inode, const char *name, void *buffer, size_t size); int (*set)(const struct xattr_handler *, struct mnt_idmap *idmap, struct dentry *dentry, struct inode *inode, const char *name, const void *buffer, size_t size, int flags); }; /** * xattr_handler_can_list - check whether xattr can be listed * @handler: handler for this type of xattr * @dentry: dentry whose inode xattr to list * * Determine whether the xattr associated with @dentry can be listed given * @handler. * * Return: true if xattr can be listed, false if not. */ static inline bool xattr_handler_can_list(const struct xattr_handler *handler, struct dentry *dentry) { return handler && (!handler->list || handler->list(dentry)); } const char *xattr_full_name(const struct xattr_handler *, const char *); struct xattr { const char *name; void *value; size_t value_len; }; ssize_t __vfs_getxattr(struct dentry *, struct inode *, const char *, void *, size_t); ssize_t vfs_getxattr(struct mnt_idmap *, struct dentry *, const char *, void *, size_t); ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size); int __vfs_setxattr(struct mnt_idmap *, struct dentry *, struct inode *, const char *, const void *, size_t, int); int __vfs_setxattr_noperm(struct mnt_idmap *, struct dentry *, const char *, const void *, size_t, int); int __vfs_setxattr_locked(struct mnt_idmap *, struct dentry *, const char *, const void *, size_t, int, struct inode **); int vfs_setxattr(struct mnt_idmap *, struct dentry *, const char *, const void *, size_t, int); int __vfs_removexattr(struct mnt_idmap *, struct dentry *, const char *); int __vfs_removexattr_locked(struct mnt_idmap *, struct dentry *, const char *, struct inode **); int vfs_removexattr(struct mnt_idmap *, struct dentry *, const char *); ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size); int vfs_getxattr_alloc(struct mnt_idmap *idmap, struct dentry *dentry, const char *name, char **xattr_value, size_t size, gfp_t flags); int xattr_supports_user_prefix(struct inode *inode); static inline const char *xattr_prefix(const struct xattr_handler *handler) { return handler->prefix ?: handler->name; } struct simple_xattrs { struct rb_root rb_root; rwlock_t lock; }; struct simple_xattr { struct rb_node rb_node; char *name; size_t size; char value[]; }; void simple_xattrs_init(struct simple_xattrs *xattrs); void simple_xattrs_free(struct simple_xattrs *xattrs, size_t *freed_space); size_t simple_xattr_space(const char *name, size_t size); struct simple_xattr *simple_xattr_alloc(const void *value, size_t size); void simple_xattr_free(struct simple_xattr *xattr); int simple_xattr_get(struct simple_xattrs *xattrs, const char *name, void *buffer, size_t size); struct simple_xattr *simple_xattr_set(struct simple_xattrs *xattrs, const char *name, const void *value, size_t size, int flags); ssize_t simple_xattr_list(struct inode *inode, struct simple_xattrs *xattrs, char *buffer, size_t size); void simple_xattr_add(struct simple_xattrs *xattrs, struct simple_xattr *new_xattr); int xattr_list_one(char **buffer, ssize_t *remaining_size, const char *name); #endif /* _LINUX_XATTR_H */ |
| 10 10 10 10 388 389 388 391 9 10 9 10 10 10 10 10 10 10 10 10 13 13 13 13 13 13 13 401 686 587 13 | 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 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 1994 Linus Torvalds * * Pentium III FXSR, SSE support * General FPU state handling cleanups * Gareth Hughes <gareth@valinux.com>, May 2000 */ #include <asm/fpu/api.h> #include <asm/fpu/regset.h> #include <asm/fpu/sched.h> #include <asm/fpu/signal.h> #include <asm/fpu/types.h> #include <asm/traps.h> #include <asm/irq_regs.h> #include <uapi/asm/kvm.h> #include <linux/hardirq.h> #include <linux/pkeys.h> #include <linux/vmalloc.h> #include "context.h" #include "internal.h" #include "legacy.h" #include "xstate.h" #define CREATE_TRACE_POINTS #include <asm/trace/fpu.h> #ifdef CONFIG_X86_64 DEFINE_STATIC_KEY_FALSE(__fpu_state_size_dynamic); DEFINE_PER_CPU(u64, xfd_state); #endif /* The FPU state configuration data for kernel and user space */ struct fpu_state_config fpu_kernel_cfg __ro_after_init; struct fpu_state_config fpu_user_cfg __ro_after_init; /* * Represents the initial FPU state. It's mostly (but not completely) zeroes, * depending on the FPU hardware format: */ struct fpstate init_fpstate __ro_after_init; /* Track in-kernel FPU usage */ static DEFINE_PER_CPU(bool, in_kernel_fpu); /* * Track which context is using the FPU on the CPU: */ DEFINE_PER_CPU(struct fpu *, fpu_fpregs_owner_ctx); /* * Can we use the FPU in kernel mode with the * whole "kernel_fpu_begin/end()" sequence? */ bool irq_fpu_usable(void) { if (WARN_ON_ONCE(in_nmi())) return false; /* * In kernel FPU usage already active? This detects any explicitly * nested usage in task or softirq context, which is unsupported. It * also detects attempted usage in a hardirq that has interrupted a * kernel-mode FPU section. */ if (this_cpu_read(in_kernel_fpu)) { WARN_ON_FPU(!in_hardirq()); return false; } /* * When not in NMI or hard interrupt context, FPU can be used in: * * - Task context except from within fpregs_lock()'ed critical * regions. * * - Soft interrupt processing context which cannot happen * while in a fpregs_lock()'ed critical region. */ if (!in_hardirq()) return true; /* * In hard interrupt context it's safe when soft interrupts * are enabled, which means the interrupt did not hit in * a fpregs_lock()'ed critical region. */ return !softirq_count(); } EXPORT_SYMBOL(irq_fpu_usable); /* * Track AVX512 state use because it is known to slow the max clock * speed of the core. */ static void update_avx_timestamp(struct fpu *fpu) { #define AVX512_TRACKING_MASK (XFEATURE_MASK_ZMM_Hi256 | XFEATURE_MASK_Hi16_ZMM) if (fpu->fpstate->regs.xsave.header.xfeatures & AVX512_TRACKING_MASK) fpu->avx512_timestamp = jiffies; } /* * Save the FPU register state in fpu->fpstate->regs. The register state is * preserved. * * Must be called with fpregs_lock() held. * * The legacy FNSAVE instruction clears all FPU state unconditionally, so * register state has to be reloaded. That might be a pointless exercise * when the FPU is going to be used by another task right after that. But * this only affects 20+ years old 32bit systems and avoids conditionals all * over the place. * * FXSAVE and all XSAVE variants preserve the FPU register state. */ void save_fpregs_to_fpstate(struct fpu *fpu) { if (likely(use_xsave())) { os_xsave(fpu->fpstate); update_avx_timestamp(fpu); return; } if (likely(use_fxsr())) { fxsave(&fpu->fpstate->regs.fxsave); return; } /* * Legacy FPU register saving, FNSAVE always clears FPU registers, * so we have to reload them from the memory state. */ asm volatile("fnsave %[fp]; fwait" : [fp] "=m" (fpu->fpstate->regs.fsave)); frstor(&fpu->fpstate->regs.fsave); } void restore_fpregs_from_fpstate(struct fpstate *fpstate, u64 mask) { /* * AMD K7/K8 and later CPUs up to Zen don't save/restore * FDP/FIP/FOP unless an exception is pending. Clear the x87 state * here by setting it to fixed values. "m" is a random variable * that should be in L1. */ if (unlikely(static_cpu_has_bug(X86_BUG_FXSAVE_LEAK))) { asm volatile( "fnclex\n\t" "emms\n\t" "fildl %[addr]" /* set F?P to defined value */ : : [addr] "m" (*fpstate)); } if (use_xsave()) { /* * Dynamically enabled features are enabled in XCR0, but * usage requires also that the corresponding bits in XFD * are cleared. If the bits are set then using a related * instruction will raise #NM. This allows to do the * allocation of the larger FPU buffer lazy from #NM or if * the task has no permission to kill it which would happen * via #UD if the feature is disabled in XCR0. * * XFD state is following the same life time rules as * XSTATE and to restore state correctly XFD has to be * updated before XRSTORS otherwise the component would * stay in or go into init state even if the bits are set * in fpstate::regs::xsave::xfeatures. */ xfd_update_state(fpstate); /* * Restoring state always needs to modify all features * which are in @mask even if the current task cannot use * extended features. * * So fpstate->xfeatures cannot be used here, because then * a feature for which the task has no permission but was * used by the previous task would not go into init state. */ mask = fpu_kernel_cfg.max_features & mask; os_xrstor(fpstate, mask); } else { if (use_fxsr()) fxrstor(&fpstate->regs.fxsave); else frstor(&fpstate->regs.fsave); } } void fpu_reset_from_exception_fixup(void) { restore_fpregs_from_fpstate(&init_fpstate, XFEATURE_MASK_FPSTATE); } #if IS_ENABLED(CONFIG_KVM) static void __fpstate_reset(struct fpstate *fpstate, u64 xfd); static void fpu_init_guest_permissions(struct fpu_guest *gfpu) { struct fpu_state_perm *fpuperm; u64 perm; if (!IS_ENABLED(CONFIG_X86_64)) return; spin_lock_irq(¤t->sighand->siglock); fpuperm = ¤t->group_leader->thread.fpu.guest_perm; perm = fpuperm->__state_perm; /* First fpstate allocation locks down permissions. */ WRITE_ONCE(fpuperm->__state_perm, perm | FPU_GUEST_PERM_LOCKED); spin_unlock_irq(¤t->sighand->siglock); gfpu->perm = perm & ~FPU_GUEST_PERM_LOCKED; } bool fpu_alloc_guest_fpstate(struct fpu_guest *gfpu) { struct fpstate *fpstate; unsigned int size; size = fpu_kernel_cfg.default_size + ALIGN(offsetof(struct fpstate, regs), 64); fpstate = vzalloc(size); if (!fpstate) return false; /* Leave xfd to 0 (the reset value defined by spec) */ __fpstate_reset(fpstate, 0); fpstate_init_user(fpstate); fpstate->is_valloc = true; fpstate->is_guest = true; gfpu->fpstate = fpstate; gfpu->xfeatures = fpu_kernel_cfg.default_features; gfpu->perm = fpu_kernel_cfg.default_features; /* * KVM sets the FP+SSE bits in the XSAVE header when copying FPU state * to userspace, even when XSAVE is unsupported, so that restoring FPU * state on a different CPU that does support XSAVE can cleanly load * the incoming state using its natural XSAVE. In other words, KVM's * uABI size may be larger than this host's default size. Conversely, * the default size should never be larger than KVM's base uABI size; * all features that can expand the uABI size must be opt-in. */ gfpu->uabi_size = sizeof(struct kvm_xsave); if (WARN_ON_ONCE(fpu_user_cfg.default_size > gfpu->uabi_size)) gfpu->uabi_size = fpu_user_cfg.default_size; fpu_init_guest_permissions(gfpu); return true; } EXPORT_SYMBOL_GPL(fpu_alloc_guest_fpstate); void fpu_free_guest_fpstate(struct fpu_guest *gfpu) { struct fpstate *fps = gfpu->fpstate; if (!fps) return; if (WARN_ON_ONCE(!fps->is_valloc || !fps->is_guest || fps->in_use)) return; gfpu->fpstate = NULL; vfree(fps); } EXPORT_SYMBOL_GPL(fpu_free_guest_fpstate); /* * fpu_enable_guest_xfd_features - Check xfeatures against guest perm and enable * @guest_fpu: Pointer to the guest FPU container * @xfeatures: Features requested by guest CPUID * * Enable all dynamic xfeatures according to guest perm and requested CPUID. * * Return: 0 on success, error code otherwise */ int fpu_enable_guest_xfd_features(struct fpu_guest *guest_fpu, u64 xfeatures) { lockdep_assert_preemption_enabled(); /* Nothing to do if all requested features are already enabled. */ xfeatures &= ~guest_fpu->xfeatures; if (!xfeatures) return 0; return __xfd_enable_feature(xfeatures, guest_fpu); } EXPORT_SYMBOL_GPL(fpu_enable_guest_xfd_features); #ifdef CONFIG_X86_64 void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd) { fpregs_lock(); guest_fpu->fpstate->xfd = xfd; if (guest_fpu->fpstate->in_use) xfd_update_state(guest_fpu->fpstate); fpregs_unlock(); } EXPORT_SYMBOL_GPL(fpu_update_guest_xfd); /** * fpu_sync_guest_vmexit_xfd_state - Synchronize XFD MSR and software state * * Must be invoked from KVM after a VMEXIT before enabling interrupts when * XFD write emulation is disabled. This is required because the guest can * freely modify XFD and the state at VMEXIT is not guaranteed to be the * same as the state on VMENTER. So software state has to be updated before * any operation which depends on it can take place. * * Note: It can be invoked unconditionally even when write emulation is * enabled for the price of a then pointless MSR read. */ void fpu_sync_guest_vmexit_xfd_state(void) { struct fpstate *fps = current->thread.fpu.fpstate; lockdep_assert_irqs_disabled(); if (fpu_state_size_dynamic()) { rdmsrl(MSR_IA32_XFD, fps->xfd); __this_cpu_write(xfd_state, fps->xfd); } } EXPORT_SYMBOL_GPL(fpu_sync_guest_vmexit_xfd_state); #endif /* CONFIG_X86_64 */ int fpu_swap_kvm_fpstate(struct fpu_guest *guest_fpu, bool enter_guest) { struct fpstate *guest_fps = guest_fpu->fpstate; struct fpu *fpu = ¤t->thread.fpu; struct fpstate *cur_fps = fpu->fpstate; fpregs_lock(); if (!cur_fps->is_confidential && !test_thread_flag(TIF_NEED_FPU_LOAD)) save_fpregs_to_fpstate(fpu); /* Swap fpstate */ if (enter_guest) { fpu->__task_fpstate = cur_fps; fpu->fpstate = guest_fps; guest_fps->in_use = true; } else { guest_fps->in_use = false; fpu->fpstate = fpu->__task_fpstate; fpu->__task_fpstate = NULL; } cur_fps = fpu->fpstate; if (!cur_fps->is_confidential) { /* Includes XFD update */ restore_fpregs_from_fpstate(cur_fps, XFEATURE_MASK_FPSTATE); } else { /* * XSTATE is restored by firmware from encrypted * memory. Make sure XFD state is correct while * running with guest fpstate */ xfd_update_state(cur_fps); } fpregs_mark_activate(); fpregs_unlock(); return 0; } EXPORT_SYMBOL_GPL(fpu_swap_kvm_fpstate); void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf, unsigned int size, u64 xfeatures, u32 pkru) { struct fpstate *kstate = gfpu->fpstate; union fpregs_state *ustate = buf; struct membuf mb = { .p = buf, .left = size }; if (cpu_feature_enabled(X86_FEATURE_XSAVE)) { __copy_xstate_to_uabi_buf(mb, kstate, xfeatures, pkru, XSTATE_COPY_XSAVE); } else { memcpy(&ustate->fxsave, &kstate->regs.fxsave, sizeof(ustate->fxsave)); /* Make it restorable on a XSAVE enabled host */ ustate->xsave.header.xfeatures = XFEATURE_MASK_FPSSE; } } EXPORT_SYMBOL_GPL(fpu_copy_guest_fpstate_to_uabi); int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf, u64 xcr0, u32 *vpkru) { struct fpstate *kstate = gfpu->fpstate; const union fpregs_state *ustate = buf; if (!cpu_feature_enabled(X86_FEATURE_XSAVE)) { if (ustate->xsave.header.xfeatures & ~XFEATURE_MASK_FPSSE) return -EINVAL; if (ustate->fxsave.mxcsr & ~mxcsr_feature_mask) return -EINVAL; memcpy(&kstate->regs.fxsave, &ustate->fxsave, sizeof(ustate->fxsave)); return 0; } if (ustate->xsave.header.xfeatures & ~xcr0) return -EINVAL; /* * Nullify @vpkru to preserve its current value if PKRU's bit isn't set * in the header. KVM's odd ABI is to leave PKRU untouched in this * case (all other components are eventually re-initialized). */ if (!(ustate->xsave.header.xfeatures & XFEATURE_MASK_PKRU)) vpkru = NULL; return copy_uabi_from_kernel_to_xstate(kstate, ustate, vpkru); } EXPORT_SYMBOL_GPL(fpu_copy_uabi_to_guest_fpstate); #endif /* CONFIG_KVM */ void kernel_fpu_begin_mask(unsigned int kfpu_mask) { if (!irqs_disabled()) fpregs_lock(); WARN_ON_FPU(!irq_fpu_usable()); WARN_ON_FPU(this_cpu_read(in_kernel_fpu)); this_cpu_write(in_kernel_fpu, true); if (!(current->flags & (PF_KTHREAD | PF_USER_WORKER)) && !test_thread_flag(TIF_NEED_FPU_LOAD)) { set_thread_flag(TIF_NEED_FPU_LOAD); save_fpregs_to_fpstate(¤t->thread.fpu); } __cpu_invalidate_fpregs_state(); /* Put sane initial values into the control registers. */ if (likely(kfpu_mask & KFPU_MXCSR) && boot_cpu_has(X86_FEATURE_XMM)) ldmxcsr(MXCSR_DEFAULT); if (unlikely(kfpu_mask & KFPU_387) && boot_cpu_has(X86_FEATURE_FPU)) asm volatile ("fninit"); } EXPORT_SYMBOL_GPL(kernel_fpu_begin_mask); void kernel_fpu_end(void) { WARN_ON_FPU(!this_cpu_read(in_kernel_fpu)); this_cpu_write(in_kernel_fpu, false); if (!irqs_disabled()) fpregs_unlock(); } EXPORT_SYMBOL_GPL(kernel_fpu_end); /* * Sync the FPU register state to current's memory register state when the * current task owns the FPU. The hardware register state is preserved. */ void fpu_sync_fpstate(struct fpu *fpu) { WARN_ON_FPU(fpu != ¤t->thread.fpu); fpregs_lock(); trace_x86_fpu_before_save(fpu); if (!test_thread_flag(TIF_NEED_FPU_LOAD)) save_fpregs_to_fpstate(fpu); trace_x86_fpu_after_save(fpu); fpregs_unlock(); } static inline unsigned int init_fpstate_copy_size(void) { if (!use_xsave()) return fpu_kernel_cfg.default_size; /* XSAVE(S) just needs the legacy and the xstate header part */ return sizeof(init_fpstate.regs.xsave); } static inline void fpstate_init_fxstate(struct fpstate *fpstate) { fpstate->regs.fxsave.cwd = 0x37f; fpstate->regs.fxsave.mxcsr = MXCSR_DEFAULT; } /* * Legacy x87 fpstate state init: */ static inline void fpstate_init_fstate(struct fpstate *fpstate) { fpstate->regs.fsave.cwd = 0xffff037fu; fpstate->regs.fsave.swd = 0xffff0000u; fpstate->regs.fsave.twd = 0xffffffffu; fpstate->regs.fsave.fos = 0xffff0000u; } /* * Used in two places: * 1) Early boot to setup init_fpstate for non XSAVE systems * 2) fpu_alloc_guest_fpstate() which is invoked from KVM */ void fpstate_init_user(struct fpstate *fpstate) { if (!cpu_feature_enabled(X86_FEATURE_FPU)) { fpstate_init_soft(&fpstate->regs.soft); return; } xstate_init_xcomp_bv(&fpstate->regs.xsave, fpstate->xfeatures); if (cpu_feature_enabled(X86_FEATURE_FXSR)) fpstate_init_fxstate(fpstate); else fpstate_init_fstate(fpstate); } static void __fpstate_reset(struct fpstate *fpstate, u64 xfd) { /* Initialize sizes and feature masks */ fpstate->size = fpu_kernel_cfg.default_size; fpstate->user_size = fpu_user_cfg.default_size; fpstate->xfeatures = fpu_kernel_cfg.default_features; fpstate->user_xfeatures = fpu_user_cfg.default_features; fpstate->xfd = xfd; } void fpstate_reset(struct fpu *fpu) { /* Set the fpstate pointer to the default fpstate */ fpu->fpstate = &fpu->__fpstate; __fpstate_reset(fpu->fpstate, init_fpstate.xfd); /* Initialize the permission related info in fpu */ fpu->perm.__state_perm = fpu_kernel_cfg.default_features; fpu->perm.__state_size = fpu_kernel_cfg.default_size; fpu->perm.__user_state_size = fpu_user_cfg.default_size; /* Same defaults for guests */ fpu->guest_perm = fpu->perm; } static inline void fpu_inherit_perms(struct fpu *dst_fpu) { if (fpu_state_size_dynamic()) { struct fpu *src_fpu = ¤t->group_leader->thread.fpu; spin_lock_irq(¤t->sighand->siglock); /* Fork also inherits the permissions of the parent */ dst_fpu->perm = src_fpu->perm; dst_fpu->guest_perm = src_fpu->guest_perm; spin_unlock_irq(¤t->sighand->siglock); } } /* A passed ssp of zero will not cause any update */ static int update_fpu_shstk(struct task_struct *dst, unsigned long ssp) { #ifdef CONFIG_X86_USER_SHADOW_STACK struct cet_user_state *xstate; /* If ssp update is not needed. */ if (!ssp) return 0; xstate = get_xsave_addr(&dst->thread.fpu.fpstate->regs.xsave, XFEATURE_CET_USER); /* * If there is a non-zero ssp, then 'dst' must be configured with a shadow * stack and the fpu state should be up to date since it was just copied * from the parent in fpu_clone(). So there must be a valid non-init CET * state location in the buffer. */ if (WARN_ON_ONCE(!xstate)) return 1; xstate->user_ssp = (u64)ssp; #endif return 0; } /* Clone current's FPU state on fork */ int fpu_clone(struct task_struct *dst, unsigned long clone_flags, bool minimal, unsigned long ssp) { struct fpu *src_fpu = ¤t->thread.fpu; struct fpu *dst_fpu = &dst->thread.fpu; /* The new task's FPU state cannot be valid in the hardware. */ dst_fpu->last_cpu = -1; fpstate_reset(dst_fpu); if (!cpu_feature_enabled(X86_FEATURE_FPU)) return 0; /* * Enforce reload for user space tasks and prevent kernel threads * from trying to save the FPU registers on context switch. */ set_tsk_thread_flag(dst, TIF_NEED_FPU_LOAD); /* * No FPU state inheritance for kernel threads and IO * worker threads. */ if (minimal) { /* Clear out the minimal state */ memcpy(&dst_fpu->fpstate->regs, &init_fpstate.regs, init_fpstate_copy_size()); return 0; } /* * If a new feature is added, ensure all dynamic features are * caller-saved from here! */ BUILD_BUG_ON(XFEATURE_MASK_USER_DYNAMIC != XFEATURE_MASK_XTILE_DATA); /* * Save the default portion of the current FPU state into the * clone. Assume all dynamic features to be defined as caller- * saved, which enables skipping both the expansion of fpstate * and the copying of any dynamic state. * * Do not use memcpy() when TIF_NEED_FPU_LOAD is set because * copying is not valid when current uses non-default states. */ fpregs_lock(); if (test_thread_flag(TIF_NEED_FPU_LOAD)) fpregs_restore_userregs(); save_fpregs_to_fpstate(dst_fpu); fpregs_unlock(); if (!(clone_flags & CLONE_THREAD)) fpu_inherit_perms(dst_fpu); /* * Children never inherit PASID state. * Force it to have its init value: */ if (use_xsave()) dst_fpu->fpstate->regs.xsave.header.xfeatures &= ~XFEATURE_MASK_PASID; /* * Update shadow stack pointer, in case it changed during clone. */ if (update_fpu_shstk(dst, ssp)) return 1; trace_x86_fpu_copy_src(src_fpu); trace_x86_fpu_copy_dst(dst_fpu); return 0; } /* * Whitelist the FPU register state embedded into task_struct for hardened * usercopy. */ void fpu_thread_struct_whitelist(unsigned long *offset, unsigned long *size) { *offset = offsetof(struct thread_struct, fpu.__fpstate.regs); *size = fpu_kernel_cfg.default_size; } /* * Drops current FPU state: deactivates the fpregs and * the fpstate. NOTE: it still leaves previous contents * in the fpregs in the eager-FPU case. * * This function can be used in cases where we know that * a state-restore is coming: either an explicit one, * or a reschedule. */ void fpu__drop(struct fpu *fpu) { preempt_disable(); if (fpu == ¤t->thread.fpu) { /* Ignore delayed exceptions from user space */ asm volatile("1: fwait\n" "2:\n" _ASM_EXTABLE(1b, 2b)); fpregs_deactivate(fpu); } trace_x86_fpu_dropped(fpu); preempt_enable(); } /* * Clear FPU registers by setting them up from the init fpstate. * Caller must do fpregs_[un]lock() around it. */ static inline void restore_fpregs_from_init_fpstate(u64 features_mask) { if (use_xsave()) os_xrstor(&init_fpstate, features_mask); else if (use_fxsr()) fxrstor(&init_fpstate.regs.fxsave); else frstor(&init_fpstate.regs.fsave); pkru_write_default(); } /* * Reset current->fpu memory state to the init values. */ static void fpu_reset_fpregs(void) { struct fpu *fpu = ¤t->thread.fpu; fpregs_lock(); __fpu_invalidate_fpregs_state(fpu); /* * This does not change the actual hardware registers. It just * resets the memory image and sets TIF_NEED_FPU_LOAD so a * subsequent return to usermode will reload the registers from the * task's memory image. * * Do not use fpstate_init() here. Just copy init_fpstate which has * the correct content already except for PKRU. * * PKRU handling does not rely on the xstate when restoring for * user space as PKRU is eagerly written in switch_to() and * flush_thread(). */ memcpy(&fpu->fpstate->regs, &init_fpstate.regs, init_fpstate_copy_size()); set_thread_flag(TIF_NEED_FPU_LOAD); fpregs_unlock(); } /* * Reset current's user FPU states to the init states. current's * supervisor states, if any, are not modified by this function. The * caller guarantees that the XSTATE header in memory is intact. */ void fpu__clear_user_states(struct fpu *fpu) { WARN_ON_FPU(fpu != ¤t->thread.fpu); fpregs_lock(); if (!cpu_feature_enabled(X86_FEATURE_FPU)) { fpu_reset_fpregs(); fpregs_unlock(); return; } /* * Ensure that current's supervisor states are loaded into their * corresponding registers. */ if (xfeatures_mask_supervisor() && !fpregs_state_valid(fpu, smp_processor_id())) os_xrstor_supervisor(fpu->fpstate); /* Reset user states in registers. */ restore_fpregs_from_init_fpstate(XFEATURE_MASK_USER_RESTORE); /* * Now all FPU registers have their desired values. Inform the FPU * state machine that current's FPU registers are in the hardware * registers. The memory image does not need to be updated because * any operation relying on it has to save the registers first when * current's FPU is marked active. */ fpregs_mark_activate(); fpregs_unlock(); } void fpu_flush_thread(void) { fpstate_reset(¤t->thread.fpu); fpu_reset_fpregs(); } /* * Load FPU context before returning to userspace. */ void switch_fpu_return(void) { if (!static_cpu_has(X86_FEATURE_FPU)) return; fpregs_restore_userregs(); } EXPORT_SYMBOL_GPL(switch_fpu_return); void fpregs_lock_and_load(void) { /* * fpregs_lock() only disables preemption (mostly). So modifying state * in an interrupt could screw up some in progress fpregs operation. * Warn about it. */ WARN_ON_ONCE(!irq_fpu_usable()); WARN_ON_ONCE(current->flags & PF_KTHREAD); fpregs_lock(); fpregs_assert_state_consistent(); if (test_thread_flag(TIF_NEED_FPU_LOAD)) fpregs_restore_userregs(); } #ifdef CONFIG_X86_DEBUG_FPU /* * If current FPU state according to its tracking (loaded FPU context on this * CPU) is not valid then we must have TIF_NEED_FPU_LOAD set so the context is * loaded on return to userland. */ void fpregs_assert_state_consistent(void) { struct fpu *fpu = ¤t->thread.fpu; if (test_thread_flag(TIF_NEED_FPU_LOAD)) return; WARN_ON_FPU(!fpregs_state_valid(fpu, smp_processor_id())); } EXPORT_SYMBOL_GPL(fpregs_assert_state_consistent); #endif void fpregs_mark_activate(void) { struct fpu *fpu = ¤t->thread.fpu; fpregs_activate(fpu); fpu->last_cpu = smp_processor_id(); clear_thread_flag(TIF_NEED_FPU_LOAD); } /* * x87 math exception handling: */ int fpu__exception_code(struct fpu *fpu, int trap_nr) { int err; if (trap_nr == X86_TRAP_MF) { unsigned short cwd, swd; /* * (~cwd & swd) will mask out exceptions that are not set to unmasked * status. 0x3f is the exception bits in these regs, 0x200 is the * C1 reg you need in case of a stack fault, 0x040 is the stack * fault bit. We should only be taking one exception at a time, * so if this combination doesn't produce any single exception, * then we have a bad program that isn't synchronizing its FPU usage * and it will suffer the consequences since we won't be able to * fully reproduce the context of the exception. */ if (boot_cpu_has(X86_FEATURE_FXSR)) { cwd = fpu->fpstate->regs.fxsave.cwd; swd = fpu->fpstate->regs.fxsave.swd; } else { cwd = (unsigned short)fpu->fpstate->regs.fsave.cwd; swd = (unsigned short)fpu->fpstate->regs.fsave.swd; } err = swd & ~cwd; } else { /* * The SIMD FPU exceptions are handled a little differently, as there * is only a single status/control register. Thus, to determine which * unmasked exception was caught we must mask the exception mask bits * at 0x1f80, and then use these to mask the exception bits at 0x3f. */ unsigned short mxcsr = MXCSR_DEFAULT; if (boot_cpu_has(X86_FEATURE_XMM)) mxcsr = fpu->fpstate->regs.fxsave.mxcsr; err = ~(mxcsr >> 7) & mxcsr; } if (err & 0x001) { /* Invalid op */ /* * swd & 0x240 == 0x040: Stack Underflow * swd & 0x240 == 0x240: Stack Overflow * User must clear the SF bit (0x40) if set */ return FPE_FLTINV; } else if (err & 0x004) { /* Divide by Zero */ return FPE_FLTDIV; } else if (err & 0x008) { /* Overflow */ return FPE_FLTOVF; } else if (err & 0x012) { /* Denormal, Underflow */ return FPE_FLTUND; } else if (err & 0x020) { /* Precision */ return FPE_FLTRES; } /* * If we're using IRQ 13, or supposedly even some trap * X86_TRAP_MF implementations, it's possible * we get a spurious trap, which is not an error. */ return 0; } /* * Initialize register state that may prevent from entering low-power idle. * This function will be invoked from the cpuidle driver only when needed. */ noinstr void fpu_idle_fpregs(void) { /* Note: AMX_TILE being enabled implies XGETBV1 support */ if (cpu_feature_enabled(X86_FEATURE_AMX_TILE) && (xfeatures_in_use() & XFEATURE_MASK_XTILE)) { tile_release(); __this_cpu_write(fpu_fpregs_owner_ctx, NULL); } } |
| 3 3 3 3 3 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 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 | // SPDX-License-Identifier: GPL-2.0 /* * Block stat tracking code * * Copyright (C) 2016 Jens Axboe */ #include <linux/kernel.h> #include <linux/rculist.h> #include "blk-stat.h" #include "blk-mq.h" #include "blk.h" struct blk_queue_stats { struct list_head callbacks; spinlock_t lock; int accounting; }; void blk_rq_stat_init(struct blk_rq_stat *stat) { stat->min = -1ULL; stat->max = stat->nr_samples = stat->mean = 0; stat->batch = 0; } /* src is a per-cpu stat, mean isn't initialized */ void blk_rq_stat_sum(struct blk_rq_stat *dst, struct blk_rq_stat *src) { if (dst->nr_samples + src->nr_samples <= dst->nr_samples) return; dst->min = min(dst->min, src->min); dst->max = max(dst->max, src->max); dst->mean = div_u64(src->batch + dst->mean * dst->nr_samples, dst->nr_samples + src->nr_samples); dst->nr_samples += src->nr_samples; } void blk_rq_stat_add(struct blk_rq_stat *stat, u64 value) { stat->min = min(stat->min, value); stat->max = max(stat->max, value); stat->batch += value; stat->nr_samples++; } void blk_stat_add(struct request *rq, u64 now) { struct request_queue *q = rq->q; struct blk_stat_callback *cb; struct blk_rq_stat *stat; int bucket, cpu; u64 value; value = (now >= rq->io_start_time_ns) ? now - rq->io_start_time_ns : 0; rcu_read_lock(); cpu = get_cpu(); list_for_each_entry_rcu(cb, &q->stats->callbacks, list) { if (!blk_stat_is_active(cb)) continue; bucket = cb->bucket_fn(rq); if (bucket < 0) continue; stat = &per_cpu_ptr(cb->cpu_stat, cpu)[bucket]; blk_rq_stat_add(stat, value); } put_cpu(); rcu_read_unlock(); } static void blk_stat_timer_fn(struct timer_list *t) { struct blk_stat_callback *cb = from_timer(cb, t, timer); unsigned int bucket; int cpu; for (bucket = 0; bucket < cb->buckets; bucket++) blk_rq_stat_init(&cb->stat[bucket]); for_each_online_cpu(cpu) { struct blk_rq_stat *cpu_stat; cpu_stat = per_cpu_ptr(cb->cpu_stat, cpu); for (bucket = 0; bucket < cb->buckets; bucket++) { blk_rq_stat_sum(&cb->stat[bucket], &cpu_stat[bucket]); blk_rq_stat_init(&cpu_stat[bucket]); } } cb->timer_fn(cb); } struct blk_stat_callback * blk_stat_alloc_callback(void (*timer_fn)(struct blk_stat_callback *), int (*bucket_fn)(const struct request *), unsigned int buckets, void *data) { struct blk_stat_callback *cb; cb = kmalloc(sizeof(*cb), GFP_KERNEL); if (!cb) return NULL; cb->stat = kmalloc_array(buckets, sizeof(struct blk_rq_stat), GFP_KERNEL); if (!cb->stat) { kfree(cb); return NULL; } cb->cpu_stat = __alloc_percpu(buckets * sizeof(struct blk_rq_stat), __alignof__(struct blk_rq_stat)); if (!cb->cpu_stat) { kfree(cb->stat); kfree(cb); return NULL; } cb->timer_fn = timer_fn; cb->bucket_fn = bucket_fn; cb->data = data; cb->buckets = buckets; timer_setup(&cb->timer, blk_stat_timer_fn, 0); return cb; } void blk_stat_add_callback(struct request_queue *q, struct blk_stat_callback *cb) { unsigned int bucket; unsigned long flags; int cpu; for_each_possible_cpu(cpu) { struct blk_rq_stat *cpu_stat; cpu_stat = per_cpu_ptr(cb->cpu_stat, cpu); for (bucket = 0; bucket < cb->buckets; bucket++) blk_rq_stat_init(&cpu_stat[bucket]); } spin_lock_irqsave(&q->stats->lock, flags); list_add_tail_rcu(&cb->list, &q->stats->callbacks); blk_queue_flag_set(QUEUE_FLAG_STATS, q); spin_unlock_irqrestore(&q->stats->lock, flags); } void blk_stat_remove_callback(struct request_queue *q, struct blk_stat_callback *cb) { unsigned long flags; spin_lock_irqsave(&q->stats->lock, flags); list_del_rcu(&cb->list); if (list_empty(&q->stats->callbacks) && !q->stats->accounting) blk_queue_flag_clear(QUEUE_FLAG_STATS, q); spin_unlock_irqrestore(&q->stats->lock, flags); timer_delete_sync(&cb->timer); } static void blk_stat_free_callback_rcu(struct rcu_head *head) { struct blk_stat_callback *cb; cb = container_of(head, struct blk_stat_callback, rcu); free_percpu(cb->cpu_stat); kfree(cb->stat); kfree(cb); } void blk_stat_free_callback(struct blk_stat_callback *cb) { if (cb) call_rcu(&cb->rcu, blk_stat_free_callback_rcu); } void blk_stat_disable_accounting(struct request_queue *q) { unsigned long flags; spin_lock_irqsave(&q->stats->lock, flags); if (!--q->stats->accounting && list_empty(&q->stats->callbacks)) blk_queue_flag_clear(QUEUE_FLAG_STATS, q); spin_unlock_irqrestore(&q->stats->lock, flags); } EXPORT_SYMBOL_GPL(blk_stat_disable_accounting); void blk_stat_enable_accounting(struct request_queue *q) { unsigned long flags; spin_lock_irqsave(&q->stats->lock, flags); if (!q->stats->accounting++ && list_empty(&q->stats->callbacks)) blk_queue_flag_set(QUEUE_FLAG_STATS, q); spin_unlock_irqrestore(&q->stats->lock, flags); } EXPORT_SYMBOL_GPL(blk_stat_enable_accounting); struct blk_queue_stats *blk_alloc_queue_stats(void) { struct blk_queue_stats *stats; stats = kmalloc(sizeof(*stats), GFP_KERNEL); if (!stats) return NULL; INIT_LIST_HEAD(&stats->callbacks); spin_lock_init(&stats->lock); stats->accounting = 0; return stats; } void blk_free_queue_stats(struct blk_queue_stats *stats) { if (!stats) return; WARN_ON(!list_empty(&stats->callbacks)); kfree(stats); } |
| 3197 1 1 1 1 3197 1 1 1 1 1 1 1 1 1 1 3197 3194 | 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 | // SPDX-License-Identifier: GPL-2.0-only /* * fs/kernfs/inode.c - kernfs inode implementation * * Copyright (c) 2001-3 Patrick Mochel * Copyright (c) 2007 SUSE Linux Products GmbH * Copyright (c) 2007, 2013 Tejun Heo <tj@kernel.org> */ #include <linux/pagemap.h> #include <linux/backing-dev.h> #include <linux/capability.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/xattr.h> #include <linux/security.h> #include "kernfs-internal.h" static const struct inode_operations kernfs_iops = { .permission = kernfs_iop_permission, .setattr = kernfs_iop_setattr, .getattr = kernfs_iop_getattr, .listxattr = kernfs_iop_listxattr, }; static struct kernfs_iattrs *__kernfs_iattrs(struct kernfs_node *kn, int alloc) { static DEFINE_MUTEX(iattr_mutex); struct kernfs_iattrs *ret; mutex_lock(&iattr_mutex); if (kn->iattr || !alloc) goto out_unlock; kn->iattr = kmem_cache_zalloc(kernfs_iattrs_cache, GFP_KERNEL); if (!kn->iattr) goto out_unlock; /* assign default attributes */ kn->iattr->ia_uid = GLOBAL_ROOT_UID; kn->iattr->ia_gid = GLOBAL_ROOT_GID; ktime_get_real_ts64(&kn->iattr->ia_atime); kn->iattr->ia_mtime = kn->iattr->ia_atime; kn->iattr->ia_ctime = kn->iattr->ia_atime; simple_xattrs_init(&kn->iattr->xattrs); atomic_set(&kn->iattr->nr_user_xattrs, 0); atomic_set(&kn->iattr->user_xattr_size, 0); out_unlock: ret = kn->iattr; mutex_unlock(&iattr_mutex); return ret; } static struct kernfs_iattrs *kernfs_iattrs(struct kernfs_node *kn) { return __kernfs_iattrs(kn, 1); } static struct kernfs_iattrs *kernfs_iattrs_noalloc(struct kernfs_node *kn) { return __kernfs_iattrs(kn, 0); } int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) { struct kernfs_iattrs *attrs; unsigned int ia_valid = iattr->ia_valid; attrs = kernfs_iattrs(kn); if (!attrs) return -ENOMEM; if (ia_valid & ATTR_UID) attrs->ia_uid = iattr->ia_uid; if (ia_valid & ATTR_GID) attrs->ia_gid = iattr->ia_gid; if (ia_valid & ATTR_ATIME) attrs->ia_atime = iattr->ia_atime; if (ia_valid & ATTR_MTIME) attrs->ia_mtime = iattr->ia_mtime; if (ia_valid & ATTR_CTIME) attrs->ia_ctime = iattr->ia_ctime; if (ia_valid & ATTR_MODE) kn->mode = iattr->ia_mode; return 0; } /** * kernfs_setattr - set iattr on a node * @kn: target node * @iattr: iattr to set * * Return: %0 on success, -errno on failure. */ int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) { int ret; struct kernfs_root *root = kernfs_root(kn); down_write(&root->kernfs_iattr_rwsem); ret = __kernfs_setattr(kn, iattr); up_write(&root->kernfs_iattr_rwsem); return ret; } int kernfs_iop_setattr(struct mnt_idmap *idmap, struct dentry *dentry, struct iattr *iattr) { struct inode *inode = d_inode(dentry); struct kernfs_node *kn = inode->i_private; struct kernfs_root *root; int error; if (!kn) return -EINVAL; root = kernfs_root(kn); down_write(&root->kernfs_iattr_rwsem); error = setattr_prepare(&nop_mnt_idmap, dentry, iattr); if (error) goto out; error = __kernfs_setattr(kn, iattr); if (error) goto out; /* this ignores size changes */ setattr_copy(&nop_mnt_idmap, inode, iattr); out: up_write(&root->kernfs_iattr_rwsem); return error; } ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size) { struct kernfs_node *kn = kernfs_dentry_node(dentry); struct kernfs_iattrs *attrs; attrs = kernfs_iattrs(kn); if (!attrs) return -ENOMEM; return simple_xattr_list(d_inode(dentry), &attrs->xattrs, buf, size); } static inline void set_default_inode_attr(struct inode *inode, umode_t mode) { inode->i_mode = mode; simple_inode_init_ts(inode); } static inline void set_inode_attr(struct inode *inode, struct kernfs_iattrs *attrs) { inode->i_uid = attrs->ia_uid; inode->i_gid = attrs->ia_gid; inode_set_atime_to_ts(inode, attrs->ia_atime); inode_set_mtime_to_ts(inode, attrs->ia_mtime); inode_set_ctime_to_ts(inode, attrs->ia_ctime); } static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode) { struct kernfs_iattrs *attrs = kn->iattr; inode->i_mode = kn->mode; if (attrs) /* * kernfs_node has non-default attributes get them from * persistent copy in kernfs_node. */ set_inode_attr(inode, attrs); if (kernfs_type(kn) == KERNFS_DIR) set_nlink(inode, kn->dir.subdirs + 2); } int kernfs_iop_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int query_flags) { struct inode *inode = d_inode(path->dentry); struct kernfs_node *kn = inode->i_private; struct kernfs_root *root = kernfs_root(kn); down_read(&root->kernfs_iattr_rwsem); kernfs_refresh_inode(kn, inode); generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); up_read(&root->kernfs_iattr_rwsem); return 0; } static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode) { kernfs_get(kn); inode->i_private = kn; inode->i_mapping->a_ops = &ram_aops; inode->i_op = &kernfs_iops; inode->i_generation = kernfs_gen(kn); set_default_inode_attr(inode, kn->mode); kernfs_refresh_inode(kn, inode); /* initialize inode according to type */ switch (kernfs_type(kn)) { case KERNFS_DIR: inode->i_op = &kernfs_dir_iops; inode->i_fop = &kernfs_dir_fops; if (kn->flags & KERNFS_EMPTY_DIR) make_empty_dir_inode(inode); break; case KERNFS_FILE: inode->i_size = kn->attr.size; inode->i_fop = &kernfs_file_fops; break; case KERNFS_LINK: inode->i_op = &kernfs_symlink_iops; break; default: BUG(); } unlock_new_inode(inode); } /** * kernfs_get_inode - get inode for kernfs_node * @sb: super block * @kn: kernfs_node to allocate inode for * * Get inode for @kn. If such inode doesn't exist, a new inode is * allocated and basics are initialized. New inode is returned * locked. * * Locking: * Kernel thread context (may sleep). * * Return: * Pointer to allocated inode on success, %NULL on failure. */ struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn) { struct inode *inode; inode = iget_locked(sb, kernfs_ino(kn)); if (inode && (inode->i_state & I_NEW)) kernfs_init_inode(kn, inode); return inode; } /* * The kernfs_node serves as both an inode and a directory entry for * kernfs. To prevent the kernfs inode numbers from being freed * prematurely we take a reference to kernfs_node from the kernfs inode. A * super_operations.evict_inode() implementation is needed to drop that * reference upon inode destruction. */ void kernfs_evict_inode(struct inode *inode) { struct kernfs_node *kn = inode->i_private; truncate_inode_pages_final(&inode->i_data); clear_inode(inode); kernfs_put(kn); } int kernfs_iop_permission(struct mnt_idmap *idmap, struct inode *inode, int mask) { struct kernfs_node *kn; struct kernfs_root *root; int ret; if (mask & MAY_NOT_BLOCK) return -ECHILD; kn = inode->i_private; root = kernfs_root(kn); down_read(&root->kernfs_iattr_rwsem); kernfs_refresh_inode(kn, inode); ret = generic_permission(&nop_mnt_idmap, inode, mask); up_read(&root->kernfs_iattr_rwsem); return ret; } int kernfs_xattr_get(struct kernfs_node *kn, const char *name, void *value, size_t size) { struct kernfs_iattrs *attrs = kernfs_iattrs_noalloc(kn); if (!attrs) return -ENODATA; return simple_xattr_get(&attrs->xattrs, name, value, size); } int kernfs_xattr_set(struct kernfs_node *kn, const char *name, const void *value, size_t size, int flags) { struct simple_xattr *old_xattr; struct kernfs_iattrs *attrs = kernfs_iattrs(kn); if (!attrs) return -ENOMEM; old_xattr = simple_xattr_set(&attrs->xattrs, name, value, size, flags); if (IS_ERR(old_xattr)) return PTR_ERR(old_xattr); simple_xattr_free(old_xattr); return 0; } static int kernfs_vfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused, struct inode *inode, const char *suffix, void *value, size_t size) { const char *name = xattr_full_name(handler, suffix); struct kernfs_node *kn = inode->i_private; return kernfs_xattr_get(kn, name, value, size); } static int kernfs_vfs_xattr_set(const struct xattr_handler *handler, struct mnt_idmap *idmap, struct dentry *unused, struct inode *inode, const char *suffix, const void *value, size_t size, int flags) { const char *name = xattr_full_name(handler, suffix); struct kernfs_node *kn = inode->i_private; return kernfs_xattr_set(kn, name, value, size, flags); } static int kernfs_vfs_user_xattr_add(struct kernfs_node *kn, const char *full_name, struct simple_xattrs *xattrs, const void *value, size_t size, int flags) { atomic_t *sz = &kn->iattr->user_xattr_size; atomic_t *nr = &kn->iattr->nr_user_xattrs; struct simple_xattr *old_xattr; int ret; if (atomic_inc_return(nr) > KERNFS_MAX_USER_XATTRS) { ret = -ENOSPC; goto dec_count_out; } if (atomic_add_return(size, sz) > KERNFS_USER_XATTR_SIZE_LIMIT) { ret = -ENOSPC; goto dec_size_out; } old_xattr = simple_xattr_set(xattrs, full_name, value, size, flags); if (!old_xattr) return 0; if (IS_ERR(old_xattr)) { ret = PTR_ERR(old_xattr); goto dec_size_out; } ret = 0; size = old_xattr->size; simple_xattr_free(old_xattr); dec_size_out: atomic_sub(size, sz); dec_count_out: atomic_dec(nr); return ret; } static int kernfs_vfs_user_xattr_rm(struct kernfs_node *kn, const char *full_name, struct simple_xattrs *xattrs, const void *value, size_t size, int flags) { atomic_t *sz = &kn->iattr->user_xattr_size; atomic_t *nr = &kn->iattr->nr_user_xattrs; struct simple_xattr *old_xattr; old_xattr = simple_xattr_set(xattrs, full_name, value, size, flags); if (!old_xattr) return 0; if (IS_ERR(old_xattr)) return PTR_ERR(old_xattr); atomic_sub(old_xattr->size, sz); atomic_dec(nr); simple_xattr_free(old_xattr); return 0; } static int kernfs_vfs_user_xattr_set(const struct xattr_handler *handler, struct mnt_idmap *idmap, struct dentry *unused, struct inode *inode, const char *suffix, const void *value, size_t size, int flags) { const char *full_name = xattr_full_name(handler, suffix); struct kernfs_node *kn = inode->i_private; struct kernfs_iattrs *attrs; if (!(kernfs_root(kn)->flags & KERNFS_ROOT_SUPPORT_USER_XATTR)) return -EOPNOTSUPP; attrs = kernfs_iattrs(kn); if (!attrs) return -ENOMEM; if (value) return kernfs_vfs_user_xattr_add(kn, full_name, &attrs->xattrs, value, size, flags); else return kernfs_vfs_user_xattr_rm(kn, full_name, &attrs->xattrs, value, size, flags); } static const struct xattr_handler kernfs_trusted_xattr_handler = { .prefix = XATTR_TRUSTED_PREFIX, .get = kernfs_vfs_xattr_get, .set = kernfs_vfs_xattr_set, }; static const struct xattr_handler kernfs_security_xattr_handler = { .prefix = XATTR_SECURITY_PREFIX, .get = kernfs_vfs_xattr_get, .set = kernfs_vfs_xattr_set, }; static const struct xattr_handler kernfs_user_xattr_handler = { .prefix = XATTR_USER_PREFIX, .get = kernfs_vfs_xattr_get, .set = kernfs_vfs_user_xattr_set, }; const struct xattr_handler * const kernfs_xattr_handlers[] = { &kernfs_trusted_xattr_handler, &kernfs_security_xattr_handler, &kernfs_user_xattr_handler, NULL }; |
| 3186 10 10 10 11 10 10 10 10 10 10 10 10 10 10 10 10 10 11 11 11 11 11 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 | // SPDX-License-Identifier: GPL-2.0-only /* * drm_sysfs.c - Modifications to drm_sysfs_class.c to support * extra sysfs attribute from DRM. Normal drm_sysfs_class * does not allow adding attributes. * * Copyright (c) 2004 Jon Smirl <jonsmirl@gmail.com> * Copyright (c) 2003-2004 Greg Kroah-Hartman <greg@kroah.com> * Copyright (c) 2003-2004 IBM Corp. */ #include <linux/acpi.h> #include <linux/component.h> #include <linux/device.h> #include <linux/err.h> #include <linux/export.h> #include <linux/gfp.h> #include <linux/i2c.h> #include <linux/kdev_t.h> #include <linux/property.h> #include <linux/slab.h> #include <drm/drm_accel.h> #include <drm/drm_connector.h> #include <drm/drm_device.h> #include <drm/drm_file.h> #include <drm/drm_modes.h> #include <drm/drm_print.h> #include <drm/drm_property.h> #include <drm/drm_sysfs.h> #include "drm_internal.h" #include "drm_crtc_internal.h" #define to_drm_minor(d) dev_get_drvdata(d) #define to_drm_connector(d) dev_get_drvdata(d) /** * DOC: overview * * DRM provides very little additional support to drivers for sysfs * interactions, beyond just all the standard stuff. Drivers who want to expose * additional sysfs properties and property groups can attach them at either * &drm_device.dev or &drm_connector.kdev. * * Registration is automatically handled when calling drm_dev_register(), or * drm_connector_register() in case of hot-plugged connectors. Unregistration is * also automatically handled by drm_dev_unregister() and * drm_connector_unregister(). */ static struct device_type drm_sysfs_device_minor = { .name = "drm_minor" }; static struct device_type drm_sysfs_device_connector = { .name = "drm_connector", }; struct class *drm_class; #ifdef CONFIG_ACPI static bool drm_connector_acpi_bus_match(struct device *dev) { return dev->type == &drm_sysfs_device_connector; } static struct acpi_device *drm_connector_acpi_find_companion(struct device *dev) { struct drm_connector *connector = to_drm_connector(dev); return to_acpi_device_node(connector->fwnode); } static struct acpi_bus_type drm_connector_acpi_bus = { .name = "drm_connector", .match = drm_connector_acpi_bus_match, .find_companion = drm_connector_acpi_find_companion, }; static void drm_sysfs_acpi_register(void) { register_acpi_bus_type(&drm_connector_acpi_bus); } static void drm_sysfs_acpi_unregister(void) { unregister_acpi_bus_type(&drm_connector_acpi_bus); } #else static void drm_sysfs_acpi_register(void) { } static void drm_sysfs_acpi_unregister(void) { } #endif static char *drm_devnode(const struct device *dev, umode_t *mode) { return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev)); } static int typec_connector_bind(struct device *dev, struct device *typec_connector, void *data) { int ret; ret = sysfs_create_link(&dev->kobj, &typec_connector->kobj, "typec_connector"); if (ret) return ret; ret = sysfs_create_link(&typec_connector->kobj, &dev->kobj, "drm_connector"); if (ret) sysfs_remove_link(&dev->kobj, "typec_connector"); return ret; } static void typec_connector_unbind(struct device *dev, struct device *typec_connector, void *data) { sysfs_remove_link(&typec_connector->kobj, "drm_connector"); sysfs_remove_link(&dev->kobj, "typec_connector"); } static const struct component_ops typec_connector_ops = { .bind = typec_connector_bind, .unbind = typec_connector_unbind, }; static CLASS_ATTR_STRING(version, S_IRUGO, "drm 1.1.0 20060810"); /** * drm_sysfs_init - initialize sysfs helpers * * This is used to create the DRM class, which is the implicit parent of any * other top-level DRM sysfs objects. * * You must call drm_sysfs_destroy() to release the allocated resources. * * Return: 0 on success, negative error code on failure. */ int drm_sysfs_init(void) { int err; drm_class = class_create("drm"); if (IS_ERR(drm_class)) return PTR_ERR(drm_class); err = class_create_file(drm_class, &class_attr_version.attr); if (err) { class_destroy(drm_class); drm_class = NULL; return err; } drm_class->devnode = drm_devnode; drm_sysfs_acpi_register(); return 0; } /** * drm_sysfs_destroy - destroys DRM class * * Destroy the DRM device class. */ void drm_sysfs_destroy(void) { if (IS_ERR_OR_NULL(drm_class)) return; drm_sysfs_acpi_unregister(); class_remove_file(drm_class, &class_attr_version.attr); class_destroy(drm_class); drm_class = NULL; } static void drm_sysfs_release(struct device *dev) { kfree(dev); } /* * Connector properties */ static ssize_t status_store(struct device *device, struct device_attribute *attr, const char *buf, size_t count) { struct drm_connector *connector = to_drm_connector(device); struct drm_device *dev = connector->dev; enum drm_connector_force old_force; int ret; ret = mutex_lock_interruptible(&dev->mode_config.mutex); if (ret) return ret; old_force = connector->force; if (sysfs_streq(buf, "detect")) connector->force = 0; else if (sysfs_streq(buf, "on")) connector->force = DRM_FORCE_ON; else if (sysfs_streq(buf, "on-digital")) connector->force = DRM_FORCE_ON_DIGITAL; else if (sysfs_streq(buf, "off")) connector->force = DRM_FORCE_OFF; else ret = -EINVAL; if (old_force != connector->force || !connector->force) { drm_dbg_kms(dev, "[CONNECTOR:%d:%s] force updated from %d to %d or reprobing\n", connector->base.id, connector->name, old_force, connector->force); connector->funcs->fill_modes(connector, dev->mode_config.max_width, dev->mode_config.max_height); } mutex_unlock(&dev->mode_config.mutex); return ret ? ret : count; } static ssize_t status_show(struct device *device, struct device_attribute *attr, char *buf) { struct drm_connector *connector = to_drm_connector(device); enum drm_connector_status status; status = READ_ONCE(connector->status); return sysfs_emit(buf, "%s\n", drm_get_connector_status_name(status)); } static ssize_t dpms_show(struct device *device, struct device_attribute *attr, char *buf) { struct drm_connector *connector = to_drm_connector(device); int dpms; dpms = READ_ONCE(connector->dpms); return sysfs_emit(buf, "%s\n", drm_get_dpms_name(dpms)); } static ssize_t enabled_show(struct device *device, struct device_attribute *attr, char *buf) { struct drm_connector *connector = to_drm_connector(device); bool enabled; enabled = READ_ONCE(connector->encoder); return sysfs_emit(buf, enabled ? "enabled\n" : "disabled\n"); } static ssize_t edid_show(struct file *filp, struct kobject *kobj, const struct bin_attribute *attr, char *buf, loff_t off, size_t count) { struct device *connector_dev = kobj_to_dev(kobj); struct drm_connector *connector = to_drm_connector(connector_dev); ssize_t ret; ret = drm_edid_connector_property_show(connector, buf, off, count); return ret; } static ssize_t modes_show(struct device *device, struct device_attribute *attr, char *buf) { struct drm_connector *connector = to_drm_connector(device); struct drm_display_mode *mode; int written = 0; mutex_lock(&connector->dev->mode_config.mutex); list_for_each_entry(mode, &connector->modes, head) { written += scnprintf(buf + written, PAGE_SIZE - written, "%s\n", mode->name); } mutex_unlock(&connector->dev->mode_config.mutex); return written; } static ssize_t connector_id_show(struct device *device, struct device_attribute *attr, char *buf) { struct drm_connector *connector = to_drm_connector(device); return sysfs_emit(buf, "%d\n", connector->base.id); } static DEVICE_ATTR_RW(status); static DEVICE_ATTR_RO(enabled); static DEVICE_ATTR_RO(dpms); static DEVICE_ATTR_RO(modes); static DEVICE_ATTR_RO(connector_id); static struct attribute *connector_dev_attrs[] = { &dev_attr_status.attr, &dev_attr_enabled.attr, &dev_attr_dpms.attr, &dev_attr_modes.attr, &dev_attr_connector_id.attr, NULL }; static const struct bin_attribute edid_attr = { .attr.name = "edid", .attr.mode = 0444, .size = 0, .read_new = edid_show, }; static const struct bin_attribute *const connector_bin_attrs[] = { &edid_attr, NULL }; static const struct attribute_group connector_dev_group = { .attrs = connector_dev_attrs, .bin_attrs_new = connector_bin_attrs, }; static const struct attribute_group *connector_dev_groups[] = { &connector_dev_group, NULL }; int drm_sysfs_connector_add(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct device *kdev; int r; if (connector->kdev) return 0; kdev = kzalloc(sizeof(*kdev), GFP_KERNEL); if (!kdev) return -ENOMEM; device_initialize(kdev); kdev->class = drm_class; kdev->type = &drm_sysfs_device_connector; kdev->parent = dev->primary->kdev; kdev->groups = connector_dev_groups; kdev->release = drm_sysfs_release; dev_set_drvdata(kdev, connector); r = dev_set_name(kdev, "card%d-%s", dev->primary->index, connector->name); if (r) goto err_free; drm_dbg_kms(dev, "[CONNECTOR:%d:%s] adding connector to sysfs\n", connector->base.id, connector->name); r = device_add(kdev); if (r) { drm_err(dev, "failed to register connector device: %d\n", r); goto err_free; } connector->kdev = kdev; if (dev_fwnode(kdev)) { r = component_add(kdev, &typec_connector_ops); if (r) drm_err(dev, "failed to add component to create link to typec connector\n"); } return 0; err_free: put_device(kdev); return r; } int drm_sysfs_connector_add_late(struct drm_connector *connector) { if (connector->ddc) return sysfs_create_link(&connector->kdev->kobj, &connector->ddc->dev.kobj, "ddc"); return 0; } void drm_sysfs_connector_remove_early(struct drm_connector *connector) { if (connector->ddc) sysfs_remove_link(&connector->kdev->kobj, "ddc"); } void drm_sysfs_connector_remove(struct drm_connector *connector) { if (!connector->kdev) return; if (dev_fwnode(connector->kdev)) component_del(connector->kdev, &typec_connector_ops); drm_dbg_kms(connector->dev, "[CONNECTOR:%d:%s] removing connector from sysfs\n", connector->base.id, connector->name); device_unregister(connector->kdev); connector->kdev = NULL; } void drm_sysfs_lease_event(struct drm_device *dev) { char *event_string = "LEASE=1"; char *envp[] = { event_string, NULL }; drm_dbg_lease(dev, "generating lease event\n"); kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp); } /** * drm_sysfs_hotplug_event - generate a DRM uevent * @dev: DRM device * * Send a uevent for the DRM device specified by @dev. Currently we only * set HOTPLUG=1 in the uevent environment, but this could be expanded to * deal with other types of events. * * Any new uapi should be using the drm_sysfs_connector_status_event() * for uevents on connector status change. */ void drm_sysfs_hotplug_event(struct drm_device *dev) { char *event_string = "HOTPLUG=1"; char *envp[] = { event_string, NULL }; drm_dbg_kms(dev, "generating hotplug event\n"); kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp); } EXPORT_SYMBOL(drm_sysfs_hotplug_event); /** * drm_sysfs_connector_hotplug_event - generate a DRM uevent for any connector * change * @connector: connector which has changed * * Send a uevent for the DRM connector specified by @connector. This will send * a uevent with the properties HOTPLUG=1 and CONNECTOR. */ void drm_sysfs_connector_hotplug_event(struct drm_connector *connector) { struct drm_device *dev = connector->dev; char hotplug_str[] = "HOTPLUG=1", conn_id[21]; char *envp[] = { hotplug_str, conn_id, NULL }; snprintf(conn_id, sizeof(conn_id), "CONNECTOR=%u", connector->base.id); drm_dbg_kms(connector->dev, "[CONNECTOR:%d:%s] generating connector hotplug event\n", connector->base.id, connector->name); kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp); } EXPORT_SYMBOL(drm_sysfs_connector_hotplug_event); /** * drm_sysfs_connector_property_event - generate a DRM uevent for connector * property change * @connector: connector on which property changed * @property: connector property which has changed. * * Send a uevent for the specified DRM connector and property. Currently we * set HOTPLUG=1 and connector id along with the attached property id * related to the change. */ void drm_sysfs_connector_property_event(struct drm_connector *connector, struct drm_property *property) { struct drm_device *dev = connector->dev; char hotplug_str[] = "HOTPLUG=1", conn_id[21], prop_id[21]; char *envp[4] = { hotplug_str, conn_id, prop_id, NULL }; WARN_ON(!drm_mode_obj_find_prop_id(&connector->base, property->base.id)); snprintf(conn_id, ARRAY_SIZE(conn_id), "CONNECTOR=%u", connector->base.id); snprintf(prop_id, ARRAY_SIZE(prop_id), "PROPERTY=%u", property->base.id); drm_dbg_kms(connector->dev, "[CONNECTOR:%d:%s] generating connector property event for [PROP:%d:%s]\n", connector->base.id, connector->name, property->base.id, property->name); kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp); } EXPORT_SYMBOL(drm_sysfs_connector_property_event); struct device *drm_sysfs_minor_alloc(struct drm_minor *minor) { const char *minor_str; struct device *kdev; int r; kdev = kzalloc(sizeof(*kdev), GFP_KERNEL); if (!kdev) return ERR_PTR(-ENOMEM); device_initialize(kdev); if (minor->type == DRM_MINOR_ACCEL) { minor_str = "accel%d"; accel_set_device_instance_params(kdev, minor->index); } else { if (minor->type == DRM_MINOR_RENDER) minor_str = "renderD%d"; else minor_str = "card%d"; kdev->devt = MKDEV(DRM_MAJOR, minor->index); kdev->class = drm_class; kdev->type = &drm_sysfs_device_minor; } kdev->parent = minor->dev->dev; kdev->release = drm_sysfs_release; dev_set_drvdata(kdev, minor); r = dev_set_name(kdev, minor_str, minor->index); if (r < 0) goto err_free; return kdev; err_free: put_device(kdev); return ERR_PTR(r); } /** * drm_class_device_register - register new device with the DRM sysfs class * @dev: device to register * * Registers a new &struct device within the DRM sysfs class. Essentially only * used by ttm to have a place for its global settings. Drivers should never use * this. */ int drm_class_device_register(struct device *dev) { if (!drm_class || IS_ERR(drm_class)) return -ENOENT; dev->class = drm_class; return device_register(dev); } EXPORT_SYMBOL_GPL(drm_class_device_register); /** * drm_class_device_unregister - unregister device with the DRM sysfs class * @dev: device to unregister * * Unregisters a &struct device from the DRM sysfs class. Essentially only used * by ttm to have a place for its global settings. Drivers should never use * this. */ void drm_class_device_unregister(struct device *dev) { return device_unregister(dev); } EXPORT_SYMBOL_GPL(drm_class_device_unregister); |
| 6 6 6 6 6 6 6 6 14 15 15 15 15 15 15 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 | // SPDX-License-Identifier: GPL-2.0 /* * linux/mm/mempool.c * * memory buffer pool support. Such pools are mostly used * for guaranteed, deadlock-free memory allocations during * extreme VM load. * * started by Ingo Molnar, Copyright (C) 2001 * debugging by David Rientjes, Copyright (C) 2015 */ #include <linux/mm.h> #include <linux/slab.h> #include <linux/highmem.h> #include <linux/kasan.h> #include <linux/kmemleak.h> #include <linux/export.h> #include <linux/mempool.h> #include <linux/writeback.h> #include "slab.h" #ifdef CONFIG_SLUB_DEBUG_ON static void poison_error(mempool_t *pool, void *element, size_t size, size_t byte) { const int nr = pool->curr_nr; const int start = max_t(int, byte - (BITS_PER_LONG / 8), 0); const int end = min_t(int, byte + (BITS_PER_LONG / 8), size); int i; pr_err("BUG: mempool element poison mismatch\n"); pr_err("Mempool %p size %zu\n", pool, size); pr_err(" nr=%d @ %p: %s0x", nr, element, start > 0 ? "... " : ""); for (i = start; i < end; i++) pr_cont("%x ", *(u8 *)(element + i)); pr_cont("%s\n", end < size ? "..." : ""); dump_stack(); } static void __check_element(mempool_t *pool, void *element, size_t size) { u8 *obj = element; size_t i; for (i = 0; i < size; i++) { u8 exp = (i < size - 1) ? POISON_FREE : POISON_END; if (obj[i] != exp) { poison_error(pool, element, size, i); return; } } memset(obj, POISON_INUSE, size); } static void check_element(mempool_t *pool, void *element) { /* Skip checking: KASAN might save its metadata in the element. */ if (kasan_enabled()) return; /* Mempools backed by slab allocator */ if (pool->free == mempool_kfree) { __check_element(pool, element, (size_t)pool->pool_data); } else if (pool->free == mempool_free_slab) { __check_element(pool, element, kmem_cache_size(pool->pool_data)); } else if (pool->free == mempool_free_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; void *addr = kmap_local_page((struct page *)element); __check_element(pool, addr, 1UL << (PAGE_SHIFT + order)); kunmap_local(addr); } } static void __poison_element(void *element, size_t size) { u8 *obj = element; memset(obj, POISON_FREE, size - 1); obj[size - 1] = POISON_END; } static void poison_element(mempool_t *pool, void *element) { /* Skip poisoning: KASAN might save its metadata in the element. */ if (kasan_enabled()) return; /* Mempools backed by slab allocator */ if (pool->alloc == mempool_kmalloc) { __poison_element(element, (size_t)pool->pool_data); } else if (pool->alloc == mempool_alloc_slab) { __poison_element(element, kmem_cache_size(pool->pool_data)); } else if (pool->alloc == mempool_alloc_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; void *addr = kmap_local_page((struct page *)element); __poison_element(addr, 1UL << (PAGE_SHIFT + order)); kunmap_local(addr); } } #else /* CONFIG_SLUB_DEBUG_ON */ static inline void check_element(mempool_t *pool, void *element) { } static inline void poison_element(mempool_t *pool, void *element) { } #endif /* CONFIG_SLUB_DEBUG_ON */ static __always_inline bool kasan_poison_element(mempool_t *pool, void *element) { if (pool->alloc == mempool_alloc_slab || pool->alloc == mempool_kmalloc) return kasan_mempool_poison_object(element); else if (pool->alloc == mempool_alloc_pages) return kasan_mempool_poison_pages(element, (unsigned long)pool->pool_data); return true; } static void kasan_unpoison_element(mempool_t *pool, void *element) { if (pool->alloc == mempool_kmalloc) kasan_mempool_unpoison_object(element, (size_t)pool->pool_data); else if (pool->alloc == mempool_alloc_slab) kasan_mempool_unpoison_object(element, kmem_cache_size(pool->pool_data)); else if (pool->alloc == mempool_alloc_pages) kasan_mempool_unpoison_pages(element, (unsigned long)pool->pool_data); } static __always_inline void add_element(mempool_t *pool, void *element) { BUG_ON(pool->curr_nr >= pool->min_nr); poison_element(pool, element); if (kasan_poison_element(pool, element)) pool->elements[pool->curr_nr++] = element; } static void *remove_element(mempool_t *pool) { void *element = pool->elements[--pool->curr_nr]; BUG_ON(pool->curr_nr < 0); kasan_unpoison_element(pool, element); check_element(pool, element); return element; } /** * mempool_exit - exit a mempool initialized with mempool_init() * @pool: pointer to the memory pool which was initialized with * mempool_init(). * * Free all reserved elements in @pool and @pool itself. This function * only sleeps if the free_fn() function sleeps. * * May be called on a zeroed but uninitialized mempool (i.e. allocated with * kzalloc()). */ void mempool_exit(mempool_t *pool) { while (pool->curr_nr) { void *element = remove_element(pool); pool->free(element, pool->pool_data); } kfree(pool->elements); pool->elements = NULL; } EXPORT_SYMBOL(mempool_exit); /** * mempool_destroy - deallocate a memory pool * @pool: pointer to the memory pool which was allocated via * mempool_create(). * * Free all reserved elements in @pool and @pool itself. This function * only sleeps if the free_fn() function sleeps. */ void mempool_destroy(mempool_t *pool) { if (unlikely(!pool)) return; mempool_exit(pool); kfree(pool); } EXPORT_SYMBOL(mempool_destroy); int mempool_init_node(mempool_t *pool, int min_nr, mempool_alloc_t *alloc_fn, mempool_free_t *free_fn, void *pool_data, gfp_t gfp_mask, int node_id) { spin_lock_init(&pool->lock); pool->min_nr = min_nr; pool->pool_data = pool_data; pool->alloc = alloc_fn; pool->free = free_fn; init_waitqueue_head(&pool->wait); pool->elements = kmalloc_array_node(min_nr, sizeof(void *), gfp_mask, node_id); if (!pool->elements) return -ENOMEM; /* * First pre-allocate the guaranteed number of buffers. */ while (pool->curr_nr < pool->min_nr) { void *element; element = pool->alloc(gfp_mask, pool->pool_data); if (unlikely(!element)) { mempool_exit(pool); return -ENOMEM; } add_element(pool, element); } return 0; } EXPORT_SYMBOL(mempool_init_node); /** * mempool_init - initialize a memory pool * @pool: pointer to the memory pool that should be initialized * @min_nr: the minimum number of elements guaranteed to be * allocated for this pool. * @alloc_fn: user-defined element-allocation function. * @free_fn: user-defined element-freeing function. * @pool_data: optional private data available to the user-defined functions. * * Like mempool_create(), but initializes the pool in (i.e. embedded in another * structure). * * Return: %0 on success, negative error code otherwise. */ int mempool_init_noprof(mempool_t *pool, int min_nr, mempool_alloc_t *alloc_fn, mempool_free_t *free_fn, void *pool_data) { return mempool_init_node(pool, min_nr, alloc_fn, free_fn, pool_data, GFP_KERNEL, NUMA_NO_NODE); } EXPORT_SYMBOL(mempool_init_noprof); /** * mempool_create_node - create a memory pool * @min_nr: the minimum number of elements guaranteed to be * allocated for this pool. * @alloc_fn: user-defined element-allocation function. * @free_fn: user-defined element-freeing function. * @pool_data: optional private data available to the user-defined functions. * @gfp_mask: memory allocation flags * @node_id: numa node to allocate on * * this function creates and allocates a guaranteed size, preallocated * memory pool. The pool can be used from the mempool_alloc() and mempool_free() * functions. This function might sleep. Both the alloc_fn() and the free_fn() * functions might sleep - as long as the mempool_alloc() function is not called * from IRQ contexts. * * Return: pointer to the created memory pool object or %NULL on error. */ mempool_t *mempool_create_node_noprof(int min_nr, mempool_alloc_t *alloc_fn, mempool_free_t *free_fn, void *pool_data, gfp_t gfp_mask, int node_id) { mempool_t *pool; pool = kmalloc_node_noprof(sizeof(*pool), gfp_mask | __GFP_ZERO, node_id); if (!pool) return NULL; if (mempool_init_node(pool, min_nr, alloc_fn, free_fn, pool_data, gfp_mask, node_id)) { kfree(pool); return NULL; } return pool; } EXPORT_SYMBOL(mempool_create_node_noprof); /** * mempool_resize - resize an existing memory pool * @pool: pointer to the memory pool which was allocated via * mempool_create(). * @new_min_nr: the new minimum number of elements guaranteed to be * allocated for this pool. * * This function shrinks/grows the pool. In the case of growing, * it cannot be guaranteed that the pool will be grown to the new * size immediately, but new mempool_free() calls will refill it. * This function may sleep. * * Note, the caller must guarantee that no mempool_destroy is called * while this function is running. mempool_alloc() & mempool_free() * might be called (eg. from IRQ contexts) while this function executes. * * Return: %0 on success, negative error code otherwise. */ int mempool_resize(mempool_t *pool, int new_min_nr) { void *element; void **new_elements; unsigned long flags; BUG_ON(new_min_nr <= 0); might_sleep(); spin_lock_irqsave(&pool->lock, flags); if (new_min_nr <= pool->min_nr) { while (new_min_nr < pool->curr_nr) { element = remove_element(pool); spin_unlock_irqrestore(&pool->lock, flags); pool->free(element, pool->pool_data); spin_lock_irqsave(&pool->lock, flags); } pool->min_nr = new_min_nr; goto out_unlock; } spin_unlock_irqrestore(&pool->lock, flags); /* Grow the pool */ new_elements = kmalloc_array(new_min_nr, sizeof(*new_elements), GFP_KERNEL); if (!new_elements) return -ENOMEM; spin_lock_irqsave(&pool->lock, flags); if (unlikely(new_min_nr <= pool->min_nr)) { /* Raced, other resize will do our work */ spin_unlock_irqrestore(&pool->lock, flags); kfree(new_elements); goto out; } memcpy(new_elements, pool->elements, pool->curr_nr * sizeof(*new_elements)); kfree(pool->elements); pool->elements = new_elements; pool->min_nr = new_min_nr; while (pool->curr_nr < pool->min_nr) { spin_unlock_irqrestore(&pool->lock, flags); element = pool->alloc(GFP_KERNEL, pool->pool_data); if (!element) goto out; spin_lock_irqsave(&pool->lock, flags); if (pool->curr_nr < pool->min_nr) { add_element(pool, element); } else { spin_unlock_irqrestore(&pool->lock, flags); pool->free(element, pool->pool_data); /* Raced */ goto out; } } out_unlock: spin_unlock_irqrestore(&pool->lock, flags); out: return 0; } EXPORT_SYMBOL(mempool_resize); /** * mempool_alloc - allocate an element from a specific memory pool * @pool: pointer to the memory pool which was allocated via * mempool_create(). * @gfp_mask: the usual allocation bitmask. * * this function only sleeps if the alloc_fn() function sleeps or * returns NULL. Note that due to preallocation, this function * *never* fails when called from process contexts. (it might * fail if called from an IRQ context.) * Note: using __GFP_ZERO is not supported. * * Return: pointer to the allocated element or %NULL on error. */ void *mempool_alloc_noprof(mempool_t *pool, gfp_t gfp_mask) { void *element; unsigned long flags; wait_queue_entry_t wait; gfp_t gfp_temp; VM_WARN_ON_ONCE(gfp_mask & __GFP_ZERO); might_alloc(gfp_mask); gfp_mask |= __GFP_NOMEMALLOC; /* don't allocate emergency reserves */ gfp_mask |= __GFP_NORETRY; /* don't loop in __alloc_pages */ gfp_mask |= __GFP_NOWARN; /* failures are OK */ gfp_temp = gfp_mask & ~(__GFP_DIRECT_RECLAIM|__GFP_IO); repeat_alloc: element = pool->alloc(gfp_temp, pool->pool_data); if (likely(element != NULL)) return element; spin_lock_irqsave(&pool->lock, flags); if (likely(pool->curr_nr)) { element = remove_element(pool); spin_unlock_irqrestore(&pool->lock, flags); /* paired with rmb in mempool_free(), read comment there */ smp_wmb(); /* * Update the allocation stack trace as this is more useful * for debugging. */ kmemleak_update_trace(element); return element; } /* * We use gfp mask w/o direct reclaim or IO for the first round. If * alloc failed with that and @pool was empty, retry immediately. */ if (gfp_temp != gfp_mask) { spin_unlock_irqrestore(&pool->lock, flags); gfp_temp = gfp_mask; goto repeat_alloc; } /* We must not sleep if !__GFP_DIRECT_RECLAIM */ if (!(gfp_mask & __GFP_DIRECT_RECLAIM)) { spin_unlock_irqrestore(&pool->lock, flags); return NULL; } /* Let's wait for someone else to return an element to @pool */ init_wait(&wait); prepare_to_wait(&pool->wait, &wait, TASK_UNINTERRUPTIBLE); spin_unlock_irqrestore(&pool->lock, flags); /* * FIXME: this should be io_schedule(). The timeout is there as a * workaround for some DM problems in 2.6.18. */ io_schedule_timeout(5*HZ); finish_wait(&pool->wait, &wait); goto repeat_alloc; } EXPORT_SYMBOL(mempool_alloc_noprof); /** * mempool_alloc_preallocated - allocate an element from preallocated elements * belonging to a specific memory pool * @pool: pointer to the memory pool which was allocated via * mempool_create(). * * This function is similar to mempool_alloc, but it only attempts allocating * an element from the preallocated elements. It does not sleep and immediately * returns if no preallocated elements are available. * * Return: pointer to the allocated element or %NULL if no elements are * available. */ void *mempool_alloc_preallocated(mempool_t *pool) { void *element; unsigned long flags; spin_lock_irqsave(&pool->lock, flags); if (likely(pool->curr_nr)) { element = remove_element(pool); spin_unlock_irqrestore(&pool->lock, flags); /* paired with rmb in mempool_free(), read comment there */ smp_wmb(); /* * Update the allocation stack trace as this is more useful * for debugging. */ kmemleak_update_trace(element); return element; } spin_unlock_irqrestore(&pool->lock, flags); return NULL; } EXPORT_SYMBOL(mempool_alloc_preallocated); /** * mempool_free - return an element to the pool. * @element: pool element pointer. * @pool: pointer to the memory pool which was allocated via * mempool_create(). * * this function only sleeps if the free_fn() function sleeps. */ void mempool_free(void *element, mempool_t *pool) { unsigned long flags; if (unlikely(element == NULL)) return; /* * Paired with the wmb in mempool_alloc(). The preceding read is * for @element and the following @pool->curr_nr. This ensures * that the visible value of @pool->curr_nr is from after the * allocation of @element. This is necessary for fringe cases * where @element was passed to this task without going through * barriers. * * For example, assume @p is %NULL at the beginning and one task * performs "p = mempool_alloc(...);" while another task is doing * "while (!p) cpu_relax(); mempool_free(p, ...);". This function * may end up using curr_nr value which is from before allocation * of @p without the following rmb. */ smp_rmb(); /* * For correctness, we need a test which is guaranteed to trigger * if curr_nr + #allocated == min_nr. Testing curr_nr < min_nr * without locking achieves that and refilling as soon as possible * is desirable. * * Because curr_nr visible here is always a value after the * allocation of @element, any task which decremented curr_nr below * min_nr is guaranteed to see curr_nr < min_nr unless curr_nr gets * incremented to min_nr afterwards. If curr_nr gets incremented * to min_nr after the allocation of @element, the elements * allocated after that are subject to the same guarantee. * * Waiters happen iff curr_nr is 0 and the above guarantee also * ensures that there will be frees which return elements to the * pool waking up the waiters. */ if (unlikely(READ_ONCE(pool->curr_nr) < pool->min_nr)) { spin_lock_irqsave(&pool->lock, flags); if (likely(pool->curr_nr < pool->min_nr)) { add_element(pool, element); spin_unlock_irqrestore(&pool->lock, flags); wake_up(&pool->wait); return; } spin_unlock_irqrestore(&pool->lock, flags); } pool->free(element, pool->pool_data); } EXPORT_SYMBOL(mempool_free); /* * A commonly used alloc and free fn. */ void *mempool_alloc_slab(gfp_t gfp_mask, void *pool_data) { struct kmem_cache *mem = pool_data; VM_BUG_ON(mem->ctor); return kmem_cache_alloc_noprof(mem, gfp_mask); } EXPORT_SYMBOL(mempool_alloc_slab); void mempool_free_slab(void *element, void *pool_data) { struct kmem_cache *mem = pool_data; kmem_cache_free(mem, element); } EXPORT_SYMBOL(mempool_free_slab); /* * A commonly used alloc and free fn that kmalloc/kfrees the amount of memory * specified by pool_data */ void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data) { size_t size = (size_t)pool_data; return kmalloc_noprof(size, gfp_mask); } EXPORT_SYMBOL(mempool_kmalloc); void mempool_kfree(void *element, void *pool_data) { kfree(element); } EXPORT_SYMBOL(mempool_kfree); void *mempool_kvmalloc(gfp_t gfp_mask, void *pool_data) { size_t size = (size_t)pool_data; return kvmalloc(size, gfp_mask); } EXPORT_SYMBOL(mempool_kvmalloc); void mempool_kvfree(void *element, void *pool_data) { kvfree(element); } EXPORT_SYMBOL(mempool_kvfree); /* * A simple mempool-backed page allocator that allocates pages * of the order specified by pool_data. */ void *mempool_alloc_pages(gfp_t gfp_mask, void *pool_data) { int order = (int)(long)pool_data; return alloc_pages_noprof(gfp_mask, order); } EXPORT_SYMBOL(mempool_alloc_pages); void mempool_free_pages(void *element, void *pool_data) { int order = (int)(long)pool_data; __free_pages(element, order); } EXPORT_SYMBOL(mempool_free_pages); |
| 10 23 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 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 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 1994 Linus Torvalds * * Pentium III FXSR, SSE support * General FPU state handling cleanups * Gareth Hughes <gareth@valinux.com>, May 2000 * x86-64 work by Andi Kleen 2002 */ #ifndef _ASM_X86_FPU_API_H #define _ASM_X86_FPU_API_H #include <linux/bottom_half.h> #include <asm/fpu/types.h> /* * Use kernel_fpu_begin/end() if you intend to use FPU in kernel context. It * disables preemption and softirq processing, so be careful if you intend to * use it for long periods of time. Kernel-mode FPU cannot be used in all * contexts -- see irq_fpu_usable() for details. */ /* Kernel FPU states to initialize in kernel_fpu_begin_mask() */ #define KFPU_387 _BITUL(0) /* 387 state will be initialized */ #define KFPU_MXCSR _BITUL(1) /* MXCSR will be initialized */ extern void kernel_fpu_begin_mask(unsigned int kfpu_mask); extern void kernel_fpu_end(void); extern bool irq_fpu_usable(void); extern void fpregs_mark_activate(void); /* Code that is unaware of kernel_fpu_begin_mask() can use this */ static inline void kernel_fpu_begin(void) { #ifdef CONFIG_X86_64 /* * Any 64-bit code that uses 387 instructions must explicitly request * KFPU_387. */ kernel_fpu_begin_mask(KFPU_MXCSR); #else /* * 32-bit kernel code may use 387 operations as well as SSE2, etc, * as long as it checks that the CPU has the required capability. */ kernel_fpu_begin_mask(KFPU_387 | KFPU_MXCSR); #endif } /* * Use fpregs_lock() while editing CPU's FPU registers or fpu->fpstate, or while * using the FPU in kernel mode. A context switch will (and softirq might) save * CPU's FPU registers to fpu->fpstate.regs and set TIF_NEED_FPU_LOAD leaving * CPU's FPU registers in a random state. * * local_bh_disable() protects against both preemption and soft interrupts * on !RT kernels. * * On RT kernels local_bh_disable() is not sufficient because it only * serializes soft interrupt related sections via a local lock, but stays * preemptible. Disabling preemption is the right choice here as bottom * half processing is always in thread context on RT kernels so it * implicitly prevents bottom half processing as well. */ static inline void fpregs_lock(void) { if (!IS_ENABLED(CONFIG_PREEMPT_RT)) local_bh_disable(); else preempt_disable(); } static inline void fpregs_unlock(void) { if (!IS_ENABLED(CONFIG_PREEMPT_RT)) local_bh_enable(); else preempt_enable(); } /* * FPU state gets lazily restored before returning to userspace. So when in the * kernel, the valid FPU state may be kept in the buffer. This function will force * restore all the fpu state to the registers early if needed, and lock them from * being automatically saved/restored. Then FPU state can be modified safely in the * registers, before unlocking with fpregs_unlock(). */ void fpregs_lock_and_load(void); #ifdef CONFIG_X86_DEBUG_FPU extern void fpregs_assert_state_consistent(void); #else static inline void fpregs_assert_state_consistent(void) { } #endif /* * Load the task FPU state before returning to userspace. */ extern void switch_fpu_return(void); /* * Query the presence of one or more xfeatures. Works on any legacy CPU as well. * * If 'feature_name' is set then put a human-readable description of * the feature there as well - this can be used to print error (or success) * messages. */ extern int cpu_has_xfeatures(u64 xfeatures_mask, const char **feature_name); /* Trap handling */ extern int fpu__exception_code(struct fpu *fpu, int trap_nr); extern void fpu_sync_fpstate(struct fpu *fpu); extern void fpu_reset_from_exception_fixup(void); /* Boot, hotplug and resume */ extern void fpu__init_cpu(void); extern void fpu__init_system(void); extern void fpu__init_check_bugs(void); extern void fpu__resume_cpu(void); #ifdef CONFIG_MATH_EMULATION extern void fpstate_init_soft(struct swregs_state *soft); #else static inline void fpstate_init_soft(struct swregs_state *soft) {} #endif /* State tracking */ DECLARE_PER_CPU(struct fpu *, fpu_fpregs_owner_ctx); /* Process cleanup */ #ifdef CONFIG_X86_64 extern void fpstate_free(struct fpu *fpu); #else static inline void fpstate_free(struct fpu *fpu) { } #endif /* fpstate-related functions which are exported to KVM */ extern void fpstate_clear_xstate_component(struct fpstate *fps, unsigned int xfeature); extern u64 xstate_get_guest_group_perm(void); extern void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr); /* KVM specific functions */ extern bool fpu_alloc_guest_fpstate(struct fpu_guest *gfpu); extern void fpu_free_guest_fpstate(struct fpu_guest *gfpu); extern int fpu_swap_kvm_fpstate(struct fpu_guest *gfpu, bool enter_guest); extern int fpu_enable_guest_xfd_features(struct fpu_guest *guest_fpu, u64 xfeatures); #ifdef CONFIG_X86_64 extern void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd); extern void fpu_sync_guest_vmexit_xfd_state(void); #else static inline void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd) { } static inline void fpu_sync_guest_vmexit_xfd_state(void) { } #endif extern void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf, unsigned int size, u64 xfeatures, u32 pkru); extern int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf, u64 xcr0, u32 *vpkru); static inline void fpstate_set_confidential(struct fpu_guest *gfpu) { gfpu->fpstate->is_confidential = true; } static inline bool fpstate_is_confidential(struct fpu_guest *gfpu) { return gfpu->fpstate->is_confidential; } /* prctl */ extern long fpu_xstate_prctl(int option, unsigned long arg2); extern void fpu_idle_fpregs(void); #endif /* _ASM_X86_FPU_API_H */ |
| 70 70 69 286 298 11 298 70 69 72 72 180 63 70 178 | 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 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* Credentials management - see Documentation/security/credentials.rst * * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #ifndef _LINUX_CRED_H #define _LINUX_CRED_H #include <linux/capability.h> #include <linux/init.h> #include <linux/key.h> #include <linux/atomic.h> #include <linux/refcount.h> #include <linux/uidgid.h> #include <linux/sched.h> #include <linux/sched/user.h> struct cred; struct inode; /* * COW Supplementary groups list */ struct group_info { refcount_t usage; int ngroups; kgid_t gid[]; } __randomize_layout; /** * get_group_info - Get a reference to a group info structure * @group_info: The group info to reference * * This gets a reference to a set of supplementary groups. * * If the caller is accessing a task's credentials, they must hold the RCU read * lock when reading. */ static inline struct group_info *get_group_info(struct group_info *gi) { refcount_inc(&gi->usage); return gi; } /** * put_group_info - Release a reference to a group info structure * @group_info: The group info to release */ #define put_group_info(group_info) \ do { \ if (refcount_dec_and_test(&(group_info)->usage)) \ groups_free(group_info); \ } while (0) #ifdef CONFIG_MULTIUSER extern struct group_info *groups_alloc(int); extern void groups_free(struct group_info *); extern int in_group_p(kgid_t); extern int in_egroup_p(kgid_t); extern int groups_search(const struct group_info *, kgid_t); extern int set_current_groups(struct group_info *); extern void set_groups(struct cred *, struct group_info *); extern bool may_setgroups(void); extern void groups_sort(struct group_info *); #else static inline void groups_free(struct group_info *group_info) { } static inline int in_group_p(kgid_t grp) { return 1; } static inline int in_egroup_p(kgid_t grp) { return 1; } static inline int groups_search(const struct group_info *group_info, kgid_t grp) { return 1; } #endif /* * The security context of a task * * The parts of the context break down into two categories: * * (1) The objective context of a task. These parts are used when some other * task is attempting to affect this one. * * (2) The subjective context. These details are used when the task is acting * upon another object, be that a file, a task, a key or whatever. * * Note that some members of this structure belong to both categories - the * LSM security pointer for instance. * * A task has two security pointers. task->real_cred points to the objective * context that defines that task's actual details. The objective part of this * context is used whenever that task is acted upon. * * task->cred points to the subjective context that defines the details of how * that task is going to act upon another object. This may be overridden * temporarily to point to another security context, but normally points to the * same context as task->real_cred. */ struct cred { atomic_long_t usage; kuid_t uid; /* real UID of the task */ kgid_t gid; /* real GID of the task */ kuid_t suid; /* saved UID of the task */ kgid_t sgid; /* saved GID of the task */ kuid_t euid; /* effective UID of the task */ kgid_t egid; /* effective GID of the task */ kuid_t fsuid; /* UID for VFS ops */ kgid_t fsgid; /* GID for VFS ops */ unsigned securebits; /* SUID-less security management */ kernel_cap_t cap_inheritable; /* caps our children can inherit */ kernel_cap_t cap_permitted; /* caps we're permitted */ kernel_cap_t cap_effective; /* caps we can actually use */ kernel_cap_t cap_bset; /* capability bounding set */ kernel_cap_t cap_ambient; /* Ambient capability set */ #ifdef CONFIG_KEYS unsigned char jit_keyring; /* default keyring to attach requested * keys to */ struct key *session_keyring; /* keyring inherited over fork */ struct key *process_keyring; /* keyring private to this process */ struct key *thread_keyring; /* keyring private to this thread */ struct key *request_key_auth; /* assumed request_key authority */ #endif #ifdef CONFIG_SECURITY void *security; /* LSM security */ #endif struct user_struct *user; /* real user ID subscription */ struct user_namespace *user_ns; /* user_ns the caps and keyrings are relative to. */ struct ucounts *ucounts; struct group_info *group_info; /* supplementary groups for euid/fsgid */ /* RCU deletion */ union { int non_rcu; /* Can we skip RCU deletion? */ struct rcu_head rcu; /* RCU deletion hook */ }; } __randomize_layout; extern void __put_cred(struct cred *); extern void exit_creds(struct task_struct *); extern int copy_creds(struct task_struct *, unsigned long); extern const struct cred *get_task_cred(struct task_struct *); extern struct cred *cred_alloc_blank(void); extern struct cred *prepare_creds(void); extern struct cred *prepare_exec_creds(void); extern int commit_creds(struct cred *); extern void abort_creds(struct cred *); extern struct cred *prepare_kernel_cred(struct task_struct *); extern int set_security_override(struct cred *, u32); extern int set_security_override_from_ctx(struct cred *, const char *); extern int set_create_files_as(struct cred *, struct inode *); extern int cred_fscmp(const struct cred *, const struct cred *); extern void __init cred_init(void); extern int set_cred_ucounts(struct cred *); static inline bool cap_ambient_invariant_ok(const struct cred *cred) { return cap_issubset(cred->cap_ambient, cap_intersect(cred->cap_permitted, cred->cap_inheritable)); } static inline const struct cred *override_creds(const struct cred *override_cred) { return rcu_replace_pointer(current->cred, override_cred, 1); } static inline const struct cred *revert_creds(const struct cred *revert_cred) { return rcu_replace_pointer(current->cred, revert_cred, 1); } /** * get_cred_many - Get references on a set of credentials * @cred: The credentials to reference * @nr: Number of references to acquire * * Get references on the specified set of credentials. The caller must release * all acquired reference. If %NULL is passed, it is returned with no action. * * This is used to deal with a committed set of credentials. Although the * pointer is const, this will temporarily discard the const and increment the * usage count. The purpose of this is to attempt to catch at compile time the * accidental alteration of a set of credentials that should be considered * immutable. */ static inline const struct cred *get_cred_many(const struct cred *cred, int nr) { struct cred *nonconst_cred = (struct cred *) cred; if (!cred) return cred; nonconst_cred->non_rcu = 0; atomic_long_add(nr, &nonconst_cred->usage); return cred; } /* * get_cred - Get a reference on a set of credentials * @cred: The credentials to reference * * Get a reference on the specified set of credentials. The caller must * release the reference. If %NULL is passed, it is returned with no action. * * This is used to deal with a committed set of credentials. */ static inline const struct cred *get_cred(const struct cred *cred) { return get_cred_many(cred, 1); } static inline const struct cred *get_cred_rcu(const struct cred *cred) { struct cred *nonconst_cred = (struct cred *) cred; if (!cred) return NULL; if (!atomic_long_inc_not_zero(&nonconst_cred->usage)) return NULL; nonconst_cred->non_rcu = 0; return cred; } /** * put_cred - Release a reference to a set of credentials * @cred: The credentials to release * @nr: Number of references to release * * Release a reference to a set of credentials, deleting them when the last ref * is released. If %NULL is passed, nothing is done. * * This takes a const pointer to a set of credentials because the credentials * on task_struct are attached by const pointers to prevent accidental * alteration of otherwise immutable credential sets. */ static inline void put_cred_many(const struct cred *_cred, int nr) { struct cred *cred = (struct cred *) _cred; if (cred) { if (atomic_long_sub_and_test(nr, &cred->usage)) __put_cred(cred); } } /* * put_cred - Release a reference to a set of credentials * @cred: The credentials to release * * Release a reference to a set of credentials, deleting them when the last ref * is released. If %NULL is passed, nothing is done. */ static inline void put_cred(const struct cred *cred) { put_cred_many(cred, 1); } /** * current_cred - Access the current task's subjective credentials * * Access the subjective credentials of the current task. RCU-safe, * since nobody else can modify it. */ #define current_cred() \ rcu_dereference_protected(current->cred, 1) /** * current_real_cred - Access the current task's objective credentials * * Access the objective credentials of the current task. RCU-safe, * since nobody else can modify it. */ #define current_real_cred() \ rcu_dereference_protected(current->real_cred, 1) /** * __task_cred - Access a task's objective credentials * @task: The task to query * * Access the objective credentials of a task. The caller must hold the RCU * readlock. * * The result of this function should not be passed directly to get_cred(); * rather get_task_cred() should be used instead. */ #define __task_cred(task) \ rcu_dereference((task)->real_cred) /** * get_current_cred - Get the current task's subjective credentials * * Get the subjective credentials of the current task, pinning them so that * they can't go away. Accessing the current task's credentials directly is * not permitted. */ #define get_current_cred() \ (get_cred(current_cred())) /** * get_current_user - Get the current task's user_struct * * Get the user record of the current task, pinning it so that it can't go * away. */ #define get_current_user() \ ({ \ struct user_struct *__u; \ const struct cred *__cred; \ __cred = current_cred(); \ __u = get_uid(__cred->user); \ __u; \ }) /** * get_current_groups - Get the current task's supplementary group list * * Get the supplementary group list of the current task, pinning it so that it * can't go away. */ #define get_current_groups() \ ({ \ struct group_info *__groups; \ const struct cred *__cred; \ __cred = current_cred(); \ __groups = get_group_info(__cred->group_info); \ __groups; \ }) #define task_cred_xxx(task, xxx) \ ({ \ __typeof__(((struct cred *)NULL)->xxx) ___val; \ rcu_read_lock(); \ ___val = __task_cred((task))->xxx; \ rcu_read_unlock(); \ ___val; \ }) #define task_uid(task) (task_cred_xxx((task), uid)) #define task_euid(task) (task_cred_xxx((task), euid)) #define task_ucounts(task) (task_cred_xxx((task), ucounts)) #define current_cred_xxx(xxx) \ ({ \ current_cred()->xxx; \ }) #define current_uid() (current_cred_xxx(uid)) #define current_gid() (current_cred_xxx(gid)) #define current_euid() (current_cred_xxx(euid)) #define current_egid() (current_cred_xxx(egid)) #define current_suid() (current_cred_xxx(suid)) #define current_sgid() (current_cred_xxx(sgid)) #define current_fsuid() (current_cred_xxx(fsuid)) #define current_fsgid() (current_cred_xxx(fsgid)) #define current_cap() (current_cred_xxx(cap_effective)) #define current_user() (current_cred_xxx(user)) #define current_ucounts() (current_cred_xxx(ucounts)) extern struct user_namespace init_user_ns; #ifdef CONFIG_USER_NS #define current_user_ns() (current_cred_xxx(user_ns)) #else static inline struct user_namespace *current_user_ns(void) { return &init_user_ns; } #endif #define current_uid_gid(_uid, _gid) \ do { \ const struct cred *__cred; \ __cred = current_cred(); \ *(_uid) = __cred->uid; \ *(_gid) = __cred->gid; \ } while(0) #define current_euid_egid(_euid, _egid) \ do { \ const struct cred *__cred; \ __cred = current_cred(); \ *(_euid) = __cred->euid; \ *(_egid) = __cred->egid; \ } while(0) #define current_fsuid_fsgid(_fsuid, _fsgid) \ do { \ const struct cred *__cred; \ __cred = current_cred(); \ *(_fsuid) = __cred->fsuid; \ *(_fsgid) = __cred->fsgid; \ } while(0) #endif /* _LINUX_CRED_H */ |
| 1 1 1 1 1 1 1 1 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Behringer BCD2000 driver * * Copyright (C) 2014 Mario Kicherer (dev@kicherer.org) */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/bitmap.h> #include <linux/usb.h> #include <linux/usb/audio.h> #include <sound/core.h> #include <sound/initval.h> #include <sound/rawmidi.h> #define PREFIX "snd-bcd2000: " #define BUFSIZE 64 static const struct usb_device_id id_table[] = { { USB_DEVICE(0x1397, 0x00bd) }, { }, }; static const unsigned char device_cmd_prefix[] = {0x03, 0x00}; static const unsigned char bcd2000_init_sequence[] = { 0x07, 0x00, 0x00, 0x00, 0x78, 0x48, 0x1c, 0x81, 0xc4, 0x00, 0x00, 0x00, 0x5e, 0x53, 0x4a, 0xf7, 0x18, 0xfa, 0x11, 0xff, 0x6c, 0xf3, 0x90, 0xff, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x18, 0xfa, 0x11, 0xff, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf2, 0x34, 0x4a, 0xf7, 0x18, 0xfa, 0x11, 0xff }; struct bcd2000 { struct usb_device *dev; struct snd_card *card; struct usb_interface *intf; int card_index; int midi_out_active; struct snd_rawmidi *rmidi; struct snd_rawmidi_substream *midi_receive_substream; struct snd_rawmidi_substream *midi_out_substream; unsigned char midi_in_buf[BUFSIZE]; unsigned char midi_out_buf[BUFSIZE]; struct urb *midi_out_urb; struct urb *midi_in_urb; struct usb_anchor anchor; }; static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; static DEFINE_MUTEX(devices_mutex); static DECLARE_BITMAP(devices_used, SNDRV_CARDS); static struct usb_driver bcd2000_driver; #ifdef CONFIG_SND_DEBUG static void bcd2000_dump_buffer(const char *prefix, const char *buf, int len) { print_hex_dump(KERN_DEBUG, prefix, DUMP_PREFIX_NONE, 16, 1, buf, len, false); } #else static void bcd2000_dump_buffer(const char *prefix, const char *buf, int len) {} #endif static int bcd2000_midi_input_open(struct snd_rawmidi_substream *substream) { return 0; } static int bcd2000_midi_input_close(struct snd_rawmidi_substream *substream) { return 0; } /* (de)register midi substream from client */ static void bcd2000_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) { struct bcd2000 *bcd2k = substream->rmidi->private_data; bcd2k->midi_receive_substream = up ? substream : NULL; } static void bcd2000_midi_handle_input(struct bcd2000 *bcd2k, const unsigned char *buf, unsigned int buf_len) { unsigned int payload_length, tocopy; struct snd_rawmidi_substream *midi_receive_substream; midi_receive_substream = READ_ONCE(bcd2k->midi_receive_substream); if (!midi_receive_substream) return; bcd2000_dump_buffer(PREFIX "received from device: ", buf, buf_len); if (buf_len < 2) return; payload_length = buf[0]; /* ignore packets without payload */ if (payload_length == 0) return; tocopy = min(payload_length, buf_len-1); bcd2000_dump_buffer(PREFIX "sending to userspace: ", &buf[1], tocopy); snd_rawmidi_receive(midi_receive_substream, &buf[1], tocopy); } static void bcd2000_midi_send(struct bcd2000 *bcd2k) { int len, ret; struct snd_rawmidi_substream *midi_out_substream; BUILD_BUG_ON(sizeof(device_cmd_prefix) >= BUFSIZE); midi_out_substream = READ_ONCE(bcd2k->midi_out_substream); if (!midi_out_substream) return; /* copy command prefix bytes */ memcpy(bcd2k->midi_out_buf, device_cmd_prefix, sizeof(device_cmd_prefix)); /* * get MIDI packet and leave space for command prefix * and payload length */ len = snd_rawmidi_transmit(midi_out_substream, bcd2k->midi_out_buf + 3, BUFSIZE - 3); if (len < 0) dev_err(&bcd2k->dev->dev, "%s: snd_rawmidi_transmit error %d\n", __func__, len); if (len <= 0) return; /* set payload length */ bcd2k->midi_out_buf[2] = len; bcd2k->midi_out_urb->transfer_buffer_length = BUFSIZE; bcd2000_dump_buffer(PREFIX "sending to device: ", bcd2k->midi_out_buf, len+3); /* send packet to the BCD2000 */ ret = usb_submit_urb(bcd2k->midi_out_urb, GFP_ATOMIC); if (ret < 0) dev_err(&bcd2k->dev->dev, PREFIX "%s (%p): usb_submit_urb() failed, ret=%d, len=%d\n", __func__, midi_out_substream, ret, len); else bcd2k->midi_out_active = 1; } static int bcd2000_midi_output_open(struct snd_rawmidi_substream *substream) { return 0; } static int bcd2000_midi_output_close(struct snd_rawmidi_substream *substream) { struct bcd2000 *bcd2k = substream->rmidi->private_data; if (bcd2k->midi_out_active) { usb_kill_urb(bcd2k->midi_out_urb); bcd2k->midi_out_active = 0; } return 0; } /* (de)register midi substream from client */ static void bcd2000_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) { struct bcd2000 *bcd2k = substream->rmidi->private_data; if (up) { bcd2k->midi_out_substream = substream; /* check if there is data userspace wants to send */ if (!bcd2k->midi_out_active) bcd2000_midi_send(bcd2k); } else { bcd2k->midi_out_substream = NULL; } } static void bcd2000_output_complete(struct urb *urb) { struct bcd2000 *bcd2k = urb->context; bcd2k->midi_out_active = 0; if (urb->status) dev_warn(&urb->dev->dev, PREFIX "output urb->status: %d\n", urb->status); if (urb->status == -ESHUTDOWN) return; /* check if there is more data userspace wants to send */ bcd2000_midi_send(bcd2k); } static void bcd2000_input_complete(struct urb *urb) { int ret; struct bcd2000 *bcd2k = urb->context; if (urb->status) dev_warn(&urb->dev->dev, PREFIX "input urb->status: %i\n", urb->status); if (!bcd2k || urb->status == -ESHUTDOWN) return; if (urb->actual_length > 0) bcd2000_midi_handle_input(bcd2k, urb->transfer_buffer, urb->actual_length); /* return URB to device */ ret = usb_submit_urb(bcd2k->midi_in_urb, GFP_ATOMIC); if (ret < 0) dev_err(&bcd2k->dev->dev, PREFIX "%s: usb_submit_urb() failed, ret=%d\n", __func__, ret); } static const struct snd_rawmidi_ops bcd2000_midi_output = { .open = bcd2000_midi_output_open, .close = bcd2000_midi_output_close, .trigger = bcd2000_midi_output_trigger, }; static const struct snd_rawmidi_ops bcd2000_midi_input = { .open = bcd2000_midi_input_open, .close = bcd2000_midi_input_close, .trigger = bcd2000_midi_input_trigger, }; static void bcd2000_init_device(struct bcd2000 *bcd2k) { int ret; init_usb_anchor(&bcd2k->anchor); usb_anchor_urb(bcd2k->midi_out_urb, &bcd2k->anchor); usb_anchor_urb(bcd2k->midi_in_urb, &bcd2k->anchor); /* copy init sequence into buffer */ memcpy(bcd2k->midi_out_buf, bcd2000_init_sequence, 52); bcd2k->midi_out_urb->transfer_buffer_length = 52; /* submit sequence */ ret = usb_submit_urb(bcd2k->midi_out_urb, GFP_KERNEL); if (ret < 0) dev_err(&bcd2k->dev->dev, PREFIX "%s: usb_submit_urb() out failed, ret=%d: ", __func__, ret); else bcd2k->midi_out_active = 1; /* pass URB to device to enable button and controller events */ ret = usb_submit_urb(bcd2k->midi_in_urb, GFP_KERNEL); if (ret < 0) dev_err(&bcd2k->dev->dev, PREFIX "%s: usb_submit_urb() in failed, ret=%d: ", __func__, ret); /* ensure initialization is finished */ usb_wait_anchor_empty_timeout(&bcd2k->anchor, 1000); } static int bcd2000_init_midi(struct bcd2000 *bcd2k) { int ret; struct snd_rawmidi *rmidi; ret = snd_rawmidi_new(bcd2k->card, bcd2k->card->shortname, 0, 1, /* output */ 1, /* input */ &rmidi); if (ret < 0) return ret; strscpy(rmidi->name, bcd2k->card->shortname, sizeof(rmidi->name)); rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX; rmidi->private_data = bcd2k; rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &bcd2000_midi_output); rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &bcd2000_midi_input); bcd2k->rmidi = rmidi; bcd2k->midi_in_urb = usb_alloc_urb(0, GFP_KERNEL); bcd2k->midi_out_urb = usb_alloc_urb(0, GFP_KERNEL); if (!bcd2k->midi_in_urb || !bcd2k->midi_out_urb) { dev_err(&bcd2k->dev->dev, PREFIX "usb_alloc_urb failed\n"); return -ENOMEM; } usb_fill_int_urb(bcd2k->midi_in_urb, bcd2k->dev, usb_rcvintpipe(bcd2k->dev, 0x81), bcd2k->midi_in_buf, BUFSIZE, bcd2000_input_complete, bcd2k, 1); usb_fill_int_urb(bcd2k->midi_out_urb, bcd2k->dev, usb_sndintpipe(bcd2k->dev, 0x1), bcd2k->midi_out_buf, BUFSIZE, bcd2000_output_complete, bcd2k, 1); /* sanity checks of EPs before actually submitting */ if (usb_urb_ep_type_check(bcd2k->midi_in_urb) || usb_urb_ep_type_check(bcd2k->midi_out_urb)) { dev_err(&bcd2k->dev->dev, "invalid MIDI EP\n"); return -EINVAL; } bcd2000_init_device(bcd2k); return 0; } static void bcd2000_free_usb_related_resources(struct bcd2000 *bcd2k, struct usb_interface *interface) { usb_kill_urb(bcd2k->midi_out_urb); usb_kill_urb(bcd2k->midi_in_urb); usb_free_urb(bcd2k->midi_out_urb); usb_free_urb(bcd2k->midi_in_urb); if (bcd2k->intf) { usb_set_intfdata(bcd2k->intf, NULL); bcd2k->intf = NULL; } } static int bcd2000_probe(struct usb_interface *interface, const struct usb_device_id *usb_id) { struct snd_card *card; struct bcd2000 *bcd2k; unsigned int card_index; char usb_path[32]; int err; mutex_lock(&devices_mutex); for (card_index = 0; card_index < SNDRV_CARDS; ++card_index) if (!test_bit(card_index, devices_used)) break; if (card_index >= SNDRV_CARDS) { mutex_unlock(&devices_mutex); return -ENOENT; } err = snd_card_new(&interface->dev, index[card_index], id[card_index], THIS_MODULE, sizeof(*bcd2k), &card); if (err < 0) { mutex_unlock(&devices_mutex); return err; } bcd2k = card->private_data; bcd2k->dev = interface_to_usbdev(interface); bcd2k->card = card; bcd2k->card_index = card_index; bcd2k->intf = interface; snd_card_set_dev(card, &interface->dev); strscpy(card->driver, "snd-bcd2000", sizeof(card->driver)); strscpy(card->shortname, "BCD2000", sizeof(card->shortname)); usb_make_path(bcd2k->dev, usb_path, sizeof(usb_path)); snprintf(bcd2k->card->longname, sizeof(bcd2k->card->longname), "Behringer BCD2000 at %s", usb_path); err = bcd2000_init_midi(bcd2k); if (err < 0) goto probe_error; err = snd_card_register(card); if (err < 0) goto probe_error; usb_set_intfdata(interface, bcd2k); set_bit(card_index, devices_used); mutex_unlock(&devices_mutex); return 0; probe_error: dev_info(&bcd2k->dev->dev, PREFIX "error during probing"); bcd2000_free_usb_related_resources(bcd2k, interface); snd_card_free(card); mutex_unlock(&devices_mutex); return err; } static void bcd2000_disconnect(struct usb_interface *interface) { struct bcd2000 *bcd2k = usb_get_intfdata(interface); if (!bcd2k) return; mutex_lock(&devices_mutex); /* make sure that userspace cannot create new requests */ snd_card_disconnect(bcd2k->card); bcd2000_free_usb_related_resources(bcd2k, interface); clear_bit(bcd2k->card_index, devices_used); snd_card_free_when_closed(bcd2k->card); mutex_unlock(&devices_mutex); } static struct usb_driver bcd2000_driver = { .name = "snd-bcd2000", .probe = bcd2000_probe, .disconnect = bcd2000_disconnect, .id_table = id_table, }; module_usb_driver(bcd2000_driver); MODULE_DEVICE_TABLE(usb, id_table); MODULE_AUTHOR("Mario Kicherer, dev@kicherer.org"); MODULE_DESCRIPTION("Behringer BCD2000 driver"); MODULE_LICENSE("GPL"); |
| 3 3 2 3 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 | // SPDX-License-Identifier: GPL-2.0 /* Some of this code is credited to Linux USB open source files that are distributed with Linux. Copyright: 2007 Metrologic Instruments. All rights reserved. Copyright: 2011 Azimut Ltd. <http://azimutrzn.ru/> */ #include <linux/kernel.h> #include <linux/tty.h> #include <linux/module.h> #include <linux/usb.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> #include <linux/moduleparam.h> #include <linux/spinlock.h> #include <linux/uaccess.h> #include <linux/usb/serial.h> #define DRIVER_DESC "Metrologic Instruments Inc. - USB-POS driver" /* Product information. */ #define FOCUS_VENDOR_ID 0x0C2E #define FOCUS_PRODUCT_ID_BI 0x0720 #define FOCUS_PRODUCT_ID_UNI 0x0700 #define METROUSB_SET_REQUEST_TYPE 0x40 #define METROUSB_SET_MODEM_CTRL_REQUEST 10 #define METROUSB_SET_BREAK_REQUEST 0x40 #define METROUSB_MCR_NONE 0x08 /* Deactivate DTR and RTS. */ #define METROUSB_MCR_RTS 0x0a /* Activate RTS. */ #define METROUSB_MCR_DTR 0x09 /* Activate DTR. */ #define WDR_TIMEOUT 5000 /* default urb timeout. */ /* Private data structure. */ struct metrousb_private { spinlock_t lock; int throttled; unsigned long control_state; }; /* Device table list. */ static const struct usb_device_id id_table[] = { { USB_DEVICE(FOCUS_VENDOR_ID, FOCUS_PRODUCT_ID_BI) }, { USB_DEVICE(FOCUS_VENDOR_ID, FOCUS_PRODUCT_ID_UNI) }, { USB_DEVICE_INTERFACE_CLASS(0x0c2e, 0x0730, 0xff) }, /* MS7820 */ { }, /* Terminating entry. */ }; MODULE_DEVICE_TABLE(usb, id_table); /* UNI-Directional mode commands for device configure */ #define UNI_CMD_OPEN 0x80 #define UNI_CMD_CLOSE 0xFF static int metrousb_is_unidirectional_mode(struct usb_serial *serial) { u16 product_id = le16_to_cpu(serial->dev->descriptor.idProduct); return product_id == FOCUS_PRODUCT_ID_UNI; } static int metrousb_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds) { if (metrousb_is_unidirectional_mode(serial)) { if (epds->num_interrupt_out == 0) { dev_err(&serial->interface->dev, "interrupt-out endpoint missing\n"); return -ENODEV; } } return 1; } static int metrousb_send_unidirectional_cmd(u8 cmd, struct usb_serial_port *port) { int ret; int actual_len; u8 *buffer_cmd = NULL; if (!metrousb_is_unidirectional_mode(port->serial)) return 0; buffer_cmd = kzalloc(sizeof(cmd), GFP_KERNEL); if (!buffer_cmd) return -ENOMEM; *buffer_cmd = cmd; ret = usb_interrupt_msg(port->serial->dev, usb_sndintpipe(port->serial->dev, port->interrupt_out_endpointAddress), buffer_cmd, sizeof(cmd), &actual_len, USB_CTRL_SET_TIMEOUT); kfree(buffer_cmd); if (ret < 0) return ret; else if (actual_len != sizeof(cmd)) return -EIO; return 0; } static void metrousb_read_int_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct metrousb_private *metro_priv = usb_get_serial_port_data(port); unsigned char *data = urb->transfer_buffer; unsigned long flags; int throttled = 0; int result = 0; dev_dbg(&port->dev, "%s\n", __func__); switch (urb->status) { case 0: /* Success status, read from the port. */ break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* urb has been terminated. */ dev_dbg(&port->dev, "%s - urb shutting down, error code=%d\n", __func__, urb->status); return; default: dev_dbg(&port->dev, "%s - non-zero urb received, error code=%d\n", __func__, urb->status); goto exit; } /* Set the data read from the usb port into the serial port buffer. */ if (urb->actual_length) { /* Loop through the data copying each byte to the tty layer. */ tty_insert_flip_string(&port->port, data, urb->actual_length); /* Force the data to the tty layer. */ tty_flip_buffer_push(&port->port); } /* Set any port variables. */ spin_lock_irqsave(&metro_priv->lock, flags); throttled = metro_priv->throttled; spin_unlock_irqrestore(&metro_priv->lock, flags); if (throttled) return; exit: /* Try to resubmit the urb. */ result = usb_submit_urb(urb, GFP_ATOMIC); if (result) dev_err(&port->dev, "%s - failed submitting interrupt in urb, error code=%d\n", __func__, result); } static void metrousb_cleanup(struct usb_serial_port *port) { usb_kill_urb(port->interrupt_in_urb); metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port); } static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct metrousb_private *metro_priv = usb_get_serial_port_data(port); unsigned long flags; int result = 0; /* Set the private data information for the port. */ spin_lock_irqsave(&metro_priv->lock, flags); metro_priv->control_state = 0; metro_priv->throttled = 0; spin_unlock_irqrestore(&metro_priv->lock, flags); /* Clear the urb pipe. */ usb_clear_halt(serial->dev, port->interrupt_in_urb->pipe); /* Start reading from the device */ usb_fill_int_urb(port->interrupt_in_urb, serial->dev, usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress), port->interrupt_in_urb->transfer_buffer, port->interrupt_in_urb->transfer_buffer_length, metrousb_read_int_callback, port, 1); result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) { dev_err(&port->dev, "%s - failed submitting interrupt in urb, error code=%d\n", __func__, result); return result; } /* Send activate cmd to device */ result = metrousb_send_unidirectional_cmd(UNI_CMD_OPEN, port); if (result) { dev_err(&port->dev, "%s - failed to configure device, error code=%d\n", __func__, result); goto err_kill_urb; } return 0; err_kill_urb: usb_kill_urb(port->interrupt_in_urb); return result; } static int metrousb_set_modem_ctrl(struct usb_serial *serial, unsigned int control_state) { int retval = 0; unsigned char mcr = METROUSB_MCR_NONE; dev_dbg(&serial->dev->dev, "%s - control state = %d\n", __func__, control_state); /* Set the modem control value. */ if (control_state & TIOCM_DTR) mcr |= METROUSB_MCR_DTR; if (control_state & TIOCM_RTS) mcr |= METROUSB_MCR_RTS; /* Send the command to the usb port. */ retval = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), METROUSB_SET_REQUEST_TYPE, METROUSB_SET_MODEM_CTRL_REQUEST, control_state, 0, NULL, 0, WDR_TIMEOUT); if (retval < 0) dev_err(&serial->dev->dev, "%s - set modem ctrl=0x%x failed, error code=%d\n", __func__, mcr, retval); return retval; } static int metrousb_port_probe(struct usb_serial_port *port) { struct metrousb_private *metro_priv; metro_priv = kzalloc(sizeof(*metro_priv), GFP_KERNEL); if (!metro_priv) return -ENOMEM; spin_lock_init(&metro_priv->lock); usb_set_serial_port_data(port, metro_priv); return 0; } static void metrousb_port_remove(struct usb_serial_port *port) { struct metrousb_private *metro_priv; metro_priv = usb_get_serial_port_data(port); kfree(metro_priv); } static void metrousb_throttle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct metrousb_private *metro_priv = usb_get_serial_port_data(port); unsigned long flags; /* Set the private information for the port to stop reading data. */ spin_lock_irqsave(&metro_priv->lock, flags); metro_priv->throttled = 1; spin_unlock_irqrestore(&metro_priv->lock, flags); } static int metrousb_tiocmget(struct tty_struct *tty) { unsigned long control_state = 0; struct usb_serial_port *port = tty->driver_data; struct metrousb_private *metro_priv = usb_get_serial_port_data(port); unsigned long flags; spin_lock_irqsave(&metro_priv->lock, flags); control_state = metro_priv->control_state; spin_unlock_irqrestore(&metro_priv->lock, flags); return control_state; } static int metrousb_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; struct metrousb_private *metro_priv = usb_get_serial_port_data(port); unsigned long flags; unsigned long control_state = 0; dev_dbg(&port->dev, "%s - set=%d, clear=%d\n", __func__, set, clear); spin_lock_irqsave(&metro_priv->lock, flags); control_state = metro_priv->control_state; /* Set the RTS and DTR values. */ if (set & TIOCM_RTS) control_state |= TIOCM_RTS; if (set & TIOCM_DTR) control_state |= TIOCM_DTR; if (clear & TIOCM_RTS) control_state &= ~TIOCM_RTS; if (clear & TIOCM_DTR) control_state &= ~TIOCM_DTR; metro_priv->control_state = control_state; spin_unlock_irqrestore(&metro_priv->lock, flags); return metrousb_set_modem_ctrl(serial, control_state); } static void metrousb_unthrottle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct metrousb_private *metro_priv = usb_get_serial_port_data(port); unsigned long flags; int result = 0; /* Set the private information for the port to resume reading data. */ spin_lock_irqsave(&metro_priv->lock, flags); metro_priv->throttled = 0; spin_unlock_irqrestore(&metro_priv->lock, flags); /* Submit the urb to read from the port. */ result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); if (result) dev_err(&port->dev, "failed submitting interrupt in urb error code=%d\n", result); } static struct usb_serial_driver metrousb_device = { .driver = { .name = "metro-usb", }, .description = "Metrologic USB to Serial", .id_table = id_table, .num_interrupt_in = 1, .calc_num_ports = metrousb_calc_num_ports, .open = metrousb_open, .close = metrousb_cleanup, .read_int_callback = metrousb_read_int_callback, .port_probe = metrousb_port_probe, .port_remove = metrousb_port_remove, .throttle = metrousb_throttle, .unthrottle = metrousb_unthrottle, .tiocmget = metrousb_tiocmget, .tiocmset = metrousb_tiocmset, }; static struct usb_serial_driver * const serial_drivers[] = { &metrousb_device, NULL, }; module_usb_serial_driver(serial_drivers, id_table); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Philip Nicastro"); MODULE_AUTHOR("Aleksey Babahin <tamerlan311@gmail.com>"); MODULE_DESCRIPTION(DRIVER_DESC); |
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1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 | // SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2006 Jens Axboe <axboe@kernel.dk> * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> #include <linux/blkdev.h> #include <linux/blktrace_api.h> #include <linux/percpu.h> #include <linux/init.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/debugfs.h> #include <linux/export.h> #include <linux/time.h> #include <linux/uaccess.h> #include <linux/list.h> #include <linux/blk-cgroup.h> #include "../../block/blk.h" #include <trace/events/block.h> #include "trace_output.h" #ifdef CONFIG_BLK_DEV_IO_TRACE static unsigned int blktrace_seq __read_mostly = 1; static struct trace_array *blk_tr; static bool blk_tracer_enabled __read_mostly; static LIST_HEAD(running_trace_list); static __cacheline_aligned_in_smp DEFINE_RAW_SPINLOCK(running_trace_lock); /* Select an alternative, minimalistic output than the original one */ #define TRACE_BLK_OPT_CLASSIC 0x1 #define TRACE_BLK_OPT_CGROUP 0x2 #define TRACE_BLK_OPT_CGNAME 0x4 static struct tracer_opt blk_tracer_opts[] = { /* Default disable the minimalistic output */ { TRACER_OPT(blk_classic, TRACE_BLK_OPT_CLASSIC) }, #ifdef CONFIG_BLK_CGROUP { TRACER_OPT(blk_cgroup, TRACE_BLK_OPT_CGROUP) }, { TRACER_OPT(blk_cgname, TRACE_BLK_OPT_CGNAME) }, #endif { } }; static struct tracer_flags blk_tracer_flags = { .val = 0, .opts = blk_tracer_opts, }; /* Global reference count of probes */ static DEFINE_MUTEX(blk_probe_mutex); static int blk_probes_ref; static void blk_register_tracepoints(void); static void blk_unregister_tracepoints(void); /* * Send out a notify message. */ static void trace_note(struct blk_trace *bt, pid_t pid, int action, const void *data, size_t len, u64 cgid) { struct blk_io_trace *t; struct ring_buffer_event *event = NULL; struct trace_buffer *buffer = NULL; unsigned int trace_ctx = 0; int cpu = smp_processor_id(); bool blk_tracer = blk_tracer_enabled; ssize_t cgid_len = cgid ? sizeof(cgid) : 0; if (blk_tracer) { buffer = blk_tr->array_buffer.buffer; trace_ctx = tracing_gen_ctx_flags(0); event = trace_buffer_lock_reserve(buffer, TRACE_BLK, sizeof(*t) + len + cgid_len, trace_ctx); if (!event) return; t = ring_buffer_event_data(event); goto record_it; } if (!bt->rchan) return; t = relay_reserve(bt->rchan, sizeof(*t) + len + cgid_len); if (t) { t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION; t->time = ktime_to_ns(ktime_get()); record_it: t->device = bt->dev; t->action = action | (cgid ? __BLK_TN_CGROUP : 0); t->pid = pid; t->cpu = cpu; t->pdu_len = len + cgid_len; if (cgid_len) memcpy((void *)t + sizeof(*t), &cgid, cgid_len); memcpy((void *) t + sizeof(*t) + cgid_len, data, len); if (blk_tracer) trace_buffer_unlock_commit(blk_tr, buffer, event, trace_ctx); } } /* * Send out a notify for this process, if we haven't done so since a trace * started */ static void trace_note_tsk(struct task_struct *tsk) { unsigned long flags; struct blk_trace *bt; tsk->btrace_seq = blktrace_seq; raw_spin_lock_irqsave(&running_trace_lock, flags); list_for_each_entry(bt, &running_trace_list, running_list) { trace_note(bt, tsk->pid, BLK_TN_PROCESS, tsk->comm, sizeof(tsk->comm), 0); } raw_spin_unlock_irqrestore(&running_trace_lock, flags); } static void trace_note_time(struct blk_trace *bt) { struct timespec64 now; unsigned long flags; u32 words[2]; /* need to check user space to see if this breaks in y2038 or y2106 */ ktime_get_real_ts64(&now); words[0] = (u32)now.tv_sec; words[1] = now.tv_nsec; local_irq_save(flags); trace_note(bt, 0, BLK_TN_TIMESTAMP, words, sizeof(words), 0); local_irq_restore(flags); } void __blk_trace_note_message(struct blk_trace *bt, struct cgroup_subsys_state *css, const char *fmt, ...) { int n; va_list args; unsigned long flags; char *buf; u64 cgid = 0; if (unlikely(bt->trace_state != Blktrace_running && !blk_tracer_enabled)) return; /* * If the BLK_TC_NOTIFY action mask isn't set, don't send any note * message to the trace. */ if (!(bt->act_mask & BLK_TC_NOTIFY)) return; local_irq_save(flags); buf = this_cpu_ptr(bt->msg_data); va_start(args, fmt); n = vscnprintf(buf, BLK_TN_MAX_MSG, fmt, args); va_end(args); #ifdef CONFIG_BLK_CGROUP if (css && (blk_tracer_flags.val & TRACE_BLK_OPT_CGROUP)) cgid = cgroup_id(css->cgroup); else cgid = 1; #endif trace_note(bt, current->pid, BLK_TN_MESSAGE, buf, n, cgid); local_irq_restore(flags); } EXPORT_SYMBOL_GPL(__blk_trace_note_message); static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector, pid_t pid) { if (((bt->act_mask << BLK_TC_SHIFT) & what) == 0) return 1; if (sector && (sector < bt->start_lba || sector > bt->end_lba)) return 1; if (bt->pid && pid != bt->pid) return 1; return 0; } /* * Data direction bit lookup */ static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ), BLK_TC_ACT(BLK_TC_WRITE) }; #define BLK_TC_RAHEAD BLK_TC_AHEAD #define BLK_TC_PREFLUSH BLK_TC_FLUSH /* The ilog2() calls fall out because they're constant */ #define MASK_TC_BIT(rw, __name) ((__force u32)(rw & REQ_ ## __name) << \ (ilog2(BLK_TC_ ## __name) + BLK_TC_SHIFT - __REQ_ ## __name)) /* * The worker for the various blk_add_trace*() types. Fills out a * blk_io_trace structure and places it in a per-cpu subbuffer. */ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes, const blk_opf_t opf, u32 what, int error, int pdu_len, void *pdu_data, u64 cgid) { struct task_struct *tsk = current; struct ring_buffer_event *event = NULL; struct trace_buffer *buffer = NULL; struct blk_io_trace *t; unsigned long flags = 0; unsigned long *sequence; unsigned int trace_ctx = 0; pid_t pid; int cpu; bool blk_tracer = blk_tracer_enabled; ssize_t cgid_len = cgid ? sizeof(cgid) : 0; const enum req_op op = opf & REQ_OP_MASK; if (unlikely(bt->trace_state != Blktrace_running && !blk_tracer)) return; what |= ddir_act[op_is_write(op) ? WRITE : READ]; what |= MASK_TC_BIT(opf, SYNC); what |= MASK_TC_BIT(opf, RAHEAD); what |= MASK_TC_BIT(opf, META); what |= MASK_TC_BIT(opf, PREFLUSH); what |= MASK_TC_BIT(opf, FUA); if (op == REQ_OP_DISCARD || op == REQ_OP_SECURE_ERASE) what |= BLK_TC_ACT(BLK_TC_DISCARD); if (op == REQ_OP_FLUSH) what |= BLK_TC_ACT(BLK_TC_FLUSH); if (cgid) what |= __BLK_TA_CGROUP; pid = tsk->pid; if (act_log_check(bt, what, sector, pid)) return; cpu = raw_smp_processor_id(); if (blk_tracer) { tracing_record_cmdline(current); buffer = blk_tr->array_buffer.buffer; trace_ctx = tracing_gen_ctx_flags(0); event = trace_buffer_lock_reserve(buffer, TRACE_BLK, sizeof(*t) + pdu_len + cgid_len, trace_ctx); if (!event) return; t = ring_buffer_event_data(event); goto record_it; } if (unlikely(tsk->btrace_seq != blktrace_seq)) trace_note_tsk(tsk); /* * A word about the locking here - we disable interrupts to reserve * some space in the relay per-cpu buffer, to prevent an irq * from coming in and stepping on our toes. */ local_irq_save(flags); t = relay_reserve(bt->rchan, sizeof(*t) + pdu_len + cgid_len); if (t) { sequence = per_cpu_ptr(bt->sequence, cpu); t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION; t->sequence = ++(*sequence); t->time = ktime_to_ns(ktime_get()); record_it: /* * These two are not needed in ftrace as they are in the * generic trace_entry, filled by tracing_generic_entry_update, * but for the trace_event->bin() synthesizer benefit we do it * here too. */ t->cpu = cpu; t->pid = pid; t->sector = sector; t->bytes = bytes; t->action = what; t->device = bt->dev; t->error = error; t->pdu_len = pdu_len + cgid_len; if (cgid_len) memcpy((void *)t + sizeof(*t), &cgid, cgid_len); if (pdu_len) memcpy((void *)t + sizeof(*t) + cgid_len, pdu_data, pdu_len); if (blk_tracer) { trace_buffer_unlock_commit(blk_tr, buffer, event, trace_ctx); return; } } local_irq_restore(flags); } static void blk_trace_free(struct request_queue *q, struct blk_trace *bt) { relay_close(bt->rchan); /* * If 'bt->dir' is not set, then both 'dropped' and 'msg' are created * under 'q->debugfs_dir', thus lookup and remove them. */ if (!bt->dir) { debugfs_lookup_and_remove("dropped", q->debugfs_dir); debugfs_lookup_and_remove("msg", q->debugfs_dir); } else { debugfs_remove(bt->dir); } free_percpu(bt->sequence); free_percpu(bt->msg_data); kfree(bt); } static void get_probe_ref(void) { mutex_lock(&blk_probe_mutex); if (++blk_probes_ref == 1) blk_register_tracepoints(); mutex_unlock(&blk_probe_mutex); } static void put_probe_ref(void) { mutex_lock(&blk_probe_mutex); if (!--blk_probes_ref) blk_unregister_tracepoints(); mutex_unlock(&blk_probe_mutex); } static int blk_trace_start(struct blk_trace *bt) { if (bt->trace_state != Blktrace_setup && bt->trace_state != Blktrace_stopped) return -EINVAL; blktrace_seq++; smp_mb(); bt->trace_state = Blktrace_running; raw_spin_lock_irq(&running_trace_lock); list_add(&bt->running_list, &running_trace_list); raw_spin_unlock_irq(&running_trace_lock); trace_note_time(bt); return 0; } static int blk_trace_stop(struct blk_trace *bt) { if (bt->trace_state != Blktrace_running) return -EINVAL; bt->trace_state = Blktrace_stopped; raw_spin_lock_irq(&running_trace_lock); list_del_init(&bt->running_list); raw_spin_unlock_irq(&running_trace_lock); relay_flush(bt->rchan); return 0; } static void blk_trace_cleanup(struct request_queue *q, struct blk_trace *bt) { blk_trace_stop(bt); synchronize_rcu(); blk_trace_free(q, bt); put_probe_ref(); } static int __blk_trace_remove(struct request_queue *q) { struct blk_trace *bt; bt = rcu_replace_pointer(q->blk_trace, NULL, lockdep_is_held(&q->debugfs_mutex)); if (!bt) return -EINVAL; blk_trace_cleanup(q, bt); return 0; } int blk_trace_remove(struct request_queue *q) { int ret; mutex_lock(&q->debugfs_mutex); ret = __blk_trace_remove(q); mutex_unlock(&q->debugfs_mutex); return ret; } EXPORT_SYMBOL_GPL(blk_trace_remove); static ssize_t blk_dropped_read(struct file *filp, char __user *buffer, size_t count, loff_t *ppos) { struct blk_trace *bt = filp->private_data; char buf[16]; snprintf(buf, sizeof(buf), "%u\n", atomic_read(&bt->dropped)); return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf)); } static const struct file_operations blk_dropped_fops = { .owner = THIS_MODULE, .open = simple_open, .read = blk_dropped_read, .llseek = default_llseek, }; static ssize_t blk_msg_write(struct file *filp, const char __user *buffer, size_t count, loff_t *ppos) { char *msg; struct blk_trace *bt; if (count >= BLK_TN_MAX_MSG) return -EINVAL; msg = memdup_user_nul(buffer, count); if (IS_ERR(msg)) return PTR_ERR(msg); bt = filp->private_data; __blk_trace_note_message(bt, NULL, "%s", msg); kfree(msg); return count; } static const struct file_operations blk_msg_fops = { .owner = THIS_MODULE, .open = simple_open, .write = blk_msg_write, .llseek = noop_llseek, }; /* * Keep track of how many times we encountered a full subbuffer, to aid * the user space app in telling how many lost events there were. */ static int blk_subbuf_start_callback(struct rchan_buf *buf, void *subbuf, void *prev_subbuf, size_t prev_padding) { struct blk_trace *bt; if (!relay_buf_full(buf)) return 1; bt = buf->chan->private_data; atomic_inc(&bt->dropped); return 0; } static int blk_remove_buf_file_callback(struct dentry *dentry) { debugfs_remove(dentry); return 0; } static struct dentry *blk_create_buf_file_callback(const char *filename, struct dentry *parent, umode_t mode, struct rchan_buf *buf, int *is_global) { return debugfs_create_file(filename, mode, parent, buf, &relay_file_operations); } static const struct rchan_callbacks blk_relay_callbacks = { .subbuf_start = blk_subbuf_start_callback, .create_buf_file = blk_create_buf_file_callback, .remove_buf_file = blk_remove_buf_file_callback, }; static void blk_trace_setup_lba(struct blk_trace *bt, struct block_device *bdev) { if (bdev) { bt->start_lba = bdev->bd_start_sect; bt->end_lba = bdev->bd_start_sect + bdev_nr_sectors(bdev); } else { bt->start_lba = 0; bt->end_lba = -1ULL; } } /* * Setup everything required to start tracing */ static int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev, struct block_device *bdev, struct blk_user_trace_setup *buts) { struct blk_trace *bt = NULL; struct dentry *dir = NULL; int ret; lockdep_assert_held(&q->debugfs_mutex); if (!buts->buf_size || !buts->buf_nr) return -EINVAL; strscpy_pad(buts->name, name, BLKTRACE_BDEV_SIZE); /* * some device names have larger paths - convert the slashes * to underscores for this to work as expected */ strreplace(buts->name, '/', '_'); /* * bdev can be NULL, as with scsi-generic, this is a helpful as * we can be. */ if (rcu_dereference_protected(q->blk_trace, lockdep_is_held(&q->debugfs_mutex))) { pr_warn("Concurrent blktraces are not allowed on %s\n", buts->name); return -EBUSY; } bt = kzalloc(sizeof(*bt), GFP_KERNEL); if (!bt) return -ENOMEM; ret = -ENOMEM; bt->sequence = alloc_percpu(unsigned long); if (!bt->sequence) goto err; bt->msg_data = __alloc_percpu(BLK_TN_MAX_MSG, __alignof__(char)); if (!bt->msg_data) goto err; /* * When tracing the whole disk reuse the existing debugfs directory * created by the block layer on init. For partitions block devices, * and scsi-generic block devices we create a temporary new debugfs * directory that will be removed once the trace ends. */ if (bdev && !bdev_is_partition(bdev)) dir = q->debugfs_dir; else bt->dir = dir = debugfs_create_dir(buts->name, blk_debugfs_root); /* * As blktrace relies on debugfs for its interface the debugfs directory * is required, contrary to the usual mantra of not checking for debugfs * files or directories. */ if (IS_ERR_OR_NULL(dir)) { pr_warn("debugfs_dir not present for %s so skipping\n", buts->name); ret = -ENOENT; goto err; } bt->dev = dev; atomic_set(&bt->dropped, 0); INIT_LIST_HEAD(&bt->running_list); ret = -EIO; debugfs_create_file("dropped", 0444, dir, bt, &blk_dropped_fops); debugfs_create_file("msg", 0222, dir, bt, &blk_msg_fops); bt->rchan = relay_open("trace", dir, buts->buf_size, buts->buf_nr, &blk_relay_callbacks, bt); if (!bt->rchan) goto err; bt->act_mask = buts->act_mask; if (!bt->act_mask) bt->act_mask = (u16) -1; blk_trace_setup_lba(bt, bdev); /* overwrite with user settings */ if (buts->start_lba) bt->start_lba = buts->start_lba; if (buts->end_lba) bt->end_lba = buts->end_lba; bt->pid = buts->pid; bt->trace_state = Blktrace_setup; rcu_assign_pointer(q->blk_trace, bt); get_probe_ref(); ret = 0; err: if (ret) blk_trace_free(q, bt); return ret; } int blk_trace_setup(struct request_queue *q, char *name, dev_t dev, struct block_device *bdev, char __user *arg) { struct blk_user_trace_setup buts; int ret; ret = copy_from_user(&buts, arg, sizeof(buts)); if (ret) return -EFAULT; mutex_lock(&q->debugfs_mutex); ret = do_blk_trace_setup(q, name, dev, bdev, &buts); mutex_unlock(&q->debugfs_mutex); if (ret) return ret; if (copy_to_user(arg, &buts, sizeof(buts))) { blk_trace_remove(q); return -EFAULT; } return 0; } EXPORT_SYMBOL_GPL(blk_trace_setup); #if defined(CONFIG_COMPAT) && defined(CONFIG_X86_64) static int compat_blk_trace_setup(struct request_queue *q, char *name, dev_t dev, struct block_device *bdev, char __user *arg) { struct blk_user_trace_setup buts; struct compat_blk_user_trace_setup cbuts; int ret; if (copy_from_user(&cbuts, arg, sizeof(cbuts))) return -EFAULT; buts = (struct blk_user_trace_setup) { .act_mask = cbuts.act_mask, .buf_size = cbuts.buf_size, .buf_nr = cbuts.buf_nr, .start_lba = cbuts.start_lba, .end_lba = cbuts.end_lba, .pid = cbuts.pid, }; mutex_lock(&q->debugfs_mutex); ret = do_blk_trace_setup(q, name, dev, bdev, &buts); mutex_unlock(&q->debugfs_mutex); if (ret) return ret; if (copy_to_user(arg, &buts.name, ARRAY_SIZE(buts.name))) { blk_trace_remove(q); return -EFAULT; } return 0; } #endif static int __blk_trace_startstop(struct request_queue *q, int start) { struct blk_trace *bt; bt = rcu_dereference_protected(q->blk_trace, lockdep_is_held(&q->debugfs_mutex)); if (bt == NULL) return -EINVAL; if (start) return blk_trace_start(bt); else return blk_trace_stop(bt); } int blk_trace_startstop(struct request_queue *q, int start) { int ret; mutex_lock(&q->debugfs_mutex); ret = __blk_trace_startstop(q, start); mutex_unlock(&q->debugfs_mutex); return ret; } EXPORT_SYMBOL_GPL(blk_trace_startstop); /* * When reading or writing the blktrace sysfs files, the references to the * opened sysfs or device files should prevent the underlying block device * from being removed. So no further delete protection is really needed. */ /** * blk_trace_ioctl - handle the ioctls associated with tracing * @bdev: the block device * @cmd: the ioctl cmd * @arg: the argument data, if any * **/ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg) { struct request_queue *q = bdev_get_queue(bdev); int ret, start = 0; char b[BDEVNAME_SIZE]; switch (cmd) { case BLKTRACESETUP: snprintf(b, sizeof(b), "%pg", bdev); ret = blk_trace_setup(q, b, bdev->bd_dev, bdev, arg); break; #if defined(CONFIG_COMPAT) && defined(CONFIG_X86_64) case BLKTRACESETUP32: snprintf(b, sizeof(b), "%pg", bdev); ret = compat_blk_trace_setup(q, b, bdev->bd_dev, bdev, arg); break; #endif case BLKTRACESTART: start = 1; fallthrough; case BLKTRACESTOP: ret = blk_trace_startstop(q, start); break; case BLKTRACETEARDOWN: ret = blk_trace_remove(q); break; default: ret = -ENOTTY; break; } return ret; } /** * blk_trace_shutdown - stop and cleanup trace structures * @q: the request queue associated with the device * **/ void blk_trace_shutdown(struct request_queue *q) { if (rcu_dereference_protected(q->blk_trace, lockdep_is_held(&q->debugfs_mutex))) __blk_trace_remove(q); } #ifdef CONFIG_BLK_CGROUP static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) { struct cgroup_subsys_state *blkcg_css; struct blk_trace *bt; /* We don't use the 'bt' value here except as an optimization... */ bt = rcu_dereference_protected(q->blk_trace, 1); if (!bt || !(blk_tracer_flags.val & TRACE_BLK_OPT_CGROUP)) return 0; blkcg_css = bio_blkcg_css(bio); if (!blkcg_css) return 0; return cgroup_id(blkcg_css->cgroup); } #else static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) { return 0; } #endif static u64 blk_trace_request_get_cgid(struct request *rq) { if (!rq->bio) return 0; /* Use the first bio */ return blk_trace_bio_get_cgid(rq->q, rq->bio); } /* * blktrace probes */ /** * blk_add_trace_rq - Add a trace for a request oriented action * @rq: the source request * @error: return status to log * @nr_bytes: number of completed bytes * @what: the action * @cgid: the cgroup info * * Description: * Records an action against a request. Will log the bio offset + size. * **/ static void blk_add_trace_rq(struct request *rq, blk_status_t error, unsigned int nr_bytes, u32 what, u64 cgid) { struct blk_trace *bt; rcu_read_lock(); bt = rcu_dereference(rq->q->blk_trace); if (likely(!bt)) { rcu_read_unlock(); return; } if (blk_rq_is_passthrough(rq)) what |= BLK_TC_ACT(BLK_TC_PC); else what |= BLK_TC_ACT(BLK_TC_FS); __blk_add_trace(bt, blk_rq_trace_sector(rq), nr_bytes, rq->cmd_flags, what, blk_status_to_errno(error), 0, NULL, cgid); rcu_read_unlock(); } static void blk_add_trace_rq_insert(void *ignore, struct request *rq) { blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_INSERT, blk_trace_request_get_cgid(rq)); } static void blk_add_trace_rq_issue(void *ignore, struct request *rq) { blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_ISSUE, blk_trace_request_get_cgid(rq)); } static void blk_add_trace_rq_merge(void *ignore, struct request *rq) { blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_BACKMERGE, blk_trace_request_get_cgid(rq)); } static void blk_add_trace_rq_requeue(void *ignore, struct request *rq) { blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_REQUEUE, blk_trace_request_get_cgid(rq)); } static void blk_add_trace_rq_complete(void *ignore, struct request *rq, blk_status_t error, unsigned int nr_bytes) { blk_add_trace_rq(rq, error, nr_bytes, BLK_TA_COMPLETE, blk_trace_request_get_cgid(rq)); } /** * blk_add_trace_bio - Add a trace for a bio oriented action * @q: queue the io is for * @bio: the source bio * @what: the action * @error: error, if any * * Description: * Records an action against a bio. Will log the bio offset + size. * **/ static void blk_add_trace_bio(struct request_queue *q, struct bio *bio, u32 what, int error) { struct blk_trace *bt; rcu_read_lock(); bt = rcu_dereference(q->blk_trace); if (likely(!bt)) { rcu_read_unlock(); return; } __blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size, bio->bi_opf, what, error, 0, NULL, blk_trace_bio_get_cgid(q, bio)); rcu_read_unlock(); } static void blk_add_trace_bio_bounce(void *ignore, struct bio *bio) { blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_BOUNCE, 0); } static void blk_add_trace_bio_complete(void *ignore, struct request_queue *q, struct bio *bio) { blk_add_trace_bio(q, bio, BLK_TA_COMPLETE, blk_status_to_errno(bio->bi_status)); } static void blk_add_trace_bio_backmerge(void *ignore, struct bio *bio) { blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_BACKMERGE, 0); } static void blk_add_trace_bio_frontmerge(void *ignore, struct bio *bio) { blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_FRONTMERGE, 0); } static void blk_add_trace_bio_queue(void *ignore, struct bio *bio) { blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_QUEUE, 0); } static void blk_add_trace_getrq(void *ignore, struct bio *bio) { blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_GETRQ, 0); } static void blk_add_trace_plug(void *ignore, struct request_queue *q) { struct blk_trace *bt; rcu_read_lock(); bt = rcu_dereference(q->blk_trace); if (bt) __blk_add_trace(bt, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL, 0); rcu_read_unlock(); } static void blk_add_trace_unplug(void *ignore, struct request_queue *q, unsigned int depth, bool explicit) { struct blk_trace *bt; rcu_read_lock(); bt = rcu_dereference(q->blk_trace); if (bt) { __be64 rpdu = cpu_to_be64(depth); u32 what; if (explicit) what = BLK_TA_UNPLUG_IO; else what = BLK_TA_UNPLUG_TIMER; __blk_add_trace(bt, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu, 0); } rcu_read_unlock(); } static void blk_add_trace_split(void *ignore, struct bio *bio, unsigned int pdu) { struct request_queue *q = bio->bi_bdev->bd_disk->queue; struct blk_trace *bt; rcu_read_lock(); bt = rcu_dereference(q->blk_trace); if (bt) { __be64 rpdu = cpu_to_be64(pdu); __blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size, bio->bi_opf, BLK_TA_SPLIT, blk_status_to_errno(bio->bi_status), sizeof(rpdu), &rpdu, blk_trace_bio_get_cgid(q, bio)); } rcu_read_unlock(); } /** * blk_add_trace_bio_remap - Add a trace for a bio-remap operation * @ignore: trace callback data parameter (not used) * @bio: the source bio * @dev: source device * @from: source sector * * Called after a bio is remapped to a different device and/or sector. **/ static void blk_add_trace_bio_remap(void *ignore, struct bio *bio, dev_t dev, sector_t from) { struct request_queue *q = bio->bi_bdev->bd_disk->queue; struct blk_trace *bt; struct blk_io_trace_remap r; rcu_read_lock(); bt = rcu_dereference(q->blk_trace); if (likely(!bt)) { rcu_read_unlock(); return; } r.device_from = cpu_to_be32(dev); r.device_to = cpu_to_be32(bio_dev(bio)); r.sector_from = cpu_to_be64(from); __blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size, bio->bi_opf, BLK_TA_REMAP, blk_status_to_errno(bio->bi_status), sizeof(r), &r, blk_trace_bio_get_cgid(q, bio)); rcu_read_unlock(); } /** * blk_add_trace_rq_remap - Add a trace for a request-remap operation * @ignore: trace callback data parameter (not used) * @rq: the source request * @dev: target device * @from: source sector * * Description: * Device mapper remaps request to other devices. * Add a trace for that action. * **/ static void blk_add_trace_rq_remap(void *ignore, struct request *rq, dev_t dev, sector_t from) { struct blk_trace *bt; struct blk_io_trace_remap r; rcu_read_lock(); bt = rcu_dereference(rq->q->blk_trace); if (likely(!bt)) { rcu_read_unlock(); return; } r.device_from = cpu_to_be32(dev); r.device_to = cpu_to_be32(disk_devt(rq->q->disk)); r.sector_from = cpu_to_be64(from); __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), rq->cmd_flags, BLK_TA_REMAP, 0, sizeof(r), &r, blk_trace_request_get_cgid(rq)); rcu_read_unlock(); } /** * blk_add_driver_data - Add binary message with driver-specific data * @rq: io request * @data: driver-specific data * @len: length of driver-specific data * * Description: * Some drivers might want to write driver-specific data per request. * **/ void blk_add_driver_data(struct request *rq, void *data, size_t len) { struct blk_trace *bt; rcu_read_lock(); bt = rcu_dereference(rq->q->blk_trace); if (likely(!bt)) { rcu_read_unlock(); return; } __blk_add_trace(bt, blk_rq_trace_sector(rq), blk_rq_bytes(rq), 0, BLK_TA_DRV_DATA, 0, len, data, blk_trace_request_get_cgid(rq)); rcu_read_unlock(); } EXPORT_SYMBOL_GPL(blk_add_driver_data); static void blk_register_tracepoints(void) { int ret; ret = register_trace_block_rq_insert(blk_add_trace_rq_insert, NULL); WARN_ON(ret); ret = register_trace_block_rq_issue(blk_add_trace_rq_issue, NULL); WARN_ON(ret); ret = register_trace_block_rq_merge(blk_add_trace_rq_merge, NULL); WARN_ON(ret); ret = register_trace_block_rq_requeue(blk_add_trace_rq_requeue, NULL); WARN_ON(ret); ret = register_trace_block_rq_complete(blk_add_trace_rq_complete, NULL); WARN_ON(ret); ret = register_trace_block_bio_bounce(blk_add_trace_bio_bounce, NULL); WARN_ON(ret); ret = register_trace_block_bio_complete(blk_add_trace_bio_complete, NULL); WARN_ON(ret); ret = register_trace_block_bio_backmerge(blk_add_trace_bio_backmerge, NULL); WARN_ON(ret); ret = register_trace_block_bio_frontmerge(blk_add_trace_bio_frontmerge, NULL); WARN_ON(ret); ret = register_trace_block_bio_queue(blk_add_trace_bio_queue, NULL); WARN_ON(ret); ret = register_trace_block_getrq(blk_add_trace_getrq, NULL); WARN_ON(ret); ret = register_trace_block_plug(blk_add_trace_plug, NULL); WARN_ON(ret); ret = register_trace_block_unplug(blk_add_trace_unplug, NULL); WARN_ON(ret); ret = register_trace_block_split(blk_add_trace_split, NULL); WARN_ON(ret); ret = register_trace_block_bio_remap(blk_add_trace_bio_remap, NULL); WARN_ON(ret); ret = register_trace_block_rq_remap(blk_add_trace_rq_remap, NULL); WARN_ON(ret); } static void blk_unregister_tracepoints(void) { unregister_trace_block_rq_remap(blk_add_trace_rq_remap, NULL); unregister_trace_block_bio_remap(blk_add_trace_bio_remap, NULL); unregister_trace_block_split(blk_add_trace_split, NULL); unregister_trace_block_unplug(blk_add_trace_unplug, NULL); unregister_trace_block_plug(blk_add_trace_plug, NULL); unregister_trace_block_getrq(blk_add_trace_getrq, NULL); unregister_trace_block_bio_queue(blk_add_trace_bio_queue, NULL); unregister_trace_block_bio_frontmerge(blk_add_trace_bio_frontmerge, NULL); unregister_trace_block_bio_backmerge(blk_add_trace_bio_backmerge, NULL); unregister_trace_block_bio_complete(blk_add_trace_bio_complete, NULL); unregister_trace_block_bio_bounce(blk_add_trace_bio_bounce, NULL); unregister_trace_block_rq_complete(blk_add_trace_rq_complete, NULL); unregister_trace_block_rq_requeue(blk_add_trace_rq_requeue, NULL); unregister_trace_block_rq_merge(blk_add_trace_rq_merge, NULL); unregister_trace_block_rq_issue(blk_add_trace_rq_issue, NULL); unregister_trace_block_rq_insert(blk_add_trace_rq_insert, NULL); tracepoint_synchronize_unregister(); } /* * struct blk_io_tracer formatting routines */ static void fill_rwbs(char *rwbs, const struct blk_io_trace *t) { int i = 0; int tc = t->action >> BLK_TC_SHIFT; if ((t->action & ~__BLK_TN_CGROUP) == BLK_TN_MESSAGE) { rwbs[i++] = 'N'; goto out; } if (tc & BLK_TC_FLUSH) rwbs[i++] = 'F'; if (tc & BLK_TC_DISCARD) rwbs[i++] = 'D'; else if (tc & BLK_TC_WRITE) rwbs[i++] = 'W'; else if (t->bytes) rwbs[i++] = 'R'; else rwbs[i++] = 'N'; if (tc & BLK_TC_FUA) rwbs[i++] = 'F'; if (tc & BLK_TC_AHEAD) rwbs[i++] = 'A'; if (tc & BLK_TC_SYNC) rwbs[i++] = 'S'; if (tc & BLK_TC_META) rwbs[i++] = 'M'; out: rwbs[i] = '\0'; } static inline const struct blk_io_trace *te_blk_io_trace(const struct trace_entry *ent) { return (const struct blk_io_trace *)ent; } static inline const void *pdu_start(const struct trace_entry *ent, bool has_cg) { return (void *)(te_blk_io_trace(ent) + 1) + (has_cg ? sizeof(u64) : 0); } static inline u64 t_cgid(const struct trace_entry *ent) { return *(u64 *)(te_blk_io_trace(ent) + 1); } static inline int pdu_real_len(const struct trace_entry *ent, bool has_cg) { return te_blk_io_trace(ent)->pdu_len - (has_cg ? sizeof(u64) : 0); } static inline u32 t_action(const struct trace_entry *ent) { return te_blk_io_trace(ent)->action; } static inline u32 t_bytes(const struct trace_entry *ent) { return te_blk_io_trace(ent)->bytes; } static inline u32 t_sec(const struct trace_entry *ent) { return te_blk_io_trace(ent)->bytes >> 9; } static inline unsigned long long t_sector(const struct trace_entry *ent) { return te_blk_io_trace(ent)->sector; } static inline __u16 t_error(const struct trace_entry *ent) { return te_blk_io_trace(ent)->error; } static __u64 get_pdu_int(const struct trace_entry *ent, bool has_cg) { const __be64 *val = pdu_start(ent, has_cg); return be64_to_cpu(*val); } typedef void (blk_log_action_t) (struct trace_iterator *iter, const char *act, bool has_cg); static void blk_log_action_classic(struct trace_iterator *iter, const char *act, bool has_cg) { char rwbs[RWBS_LEN]; unsigned long long ts = iter->ts; unsigned long nsec_rem = do_div(ts, NSEC_PER_SEC); unsigned secs = (unsigned long)ts; const struct blk_io_trace *t = te_blk_io_trace(iter->ent); fill_rwbs(rwbs, t); trace_seq_printf(&iter->seq, "%3d,%-3d %2d %5d.%09lu %5u %2s %3s ", MAJOR(t->device), MINOR(t->device), iter->cpu, secs, nsec_rem, iter->ent->pid, act, rwbs); } static void blk_log_action(struct trace_iterator *iter, const char *act, bool has_cg) { char rwbs[RWBS_LEN]; const struct blk_io_trace *t = te_blk_io_trace(iter->ent); fill_rwbs(rwbs, t); if (has_cg) { u64 id = t_cgid(iter->ent); if (blk_tracer_flags.val & TRACE_BLK_OPT_CGNAME) { char blkcg_name_buf[NAME_MAX + 1] = "<...>"; cgroup_path_from_kernfs_id(id, blkcg_name_buf, sizeof(blkcg_name_buf)); trace_seq_printf(&iter->seq, "%3d,%-3d %s %2s %3s ", MAJOR(t->device), MINOR(t->device), blkcg_name_buf, act, rwbs); } else { /* * The cgid portion used to be "INO,GEN". Userland * builds a FILEID_INO32_GEN fid out of them and * opens the cgroup using open_by_handle_at(2). * While 32bit ino setups are still the same, 64bit * ones now use the 64bit ino as the whole ID and * no longer use generation. * * Regardless of the content, always output * "LOW32,HIGH32" so that FILEID_INO32_GEN fid can * be mapped back to @id on both 64 and 32bit ino * setups. See __kernfs_fh_to_dentry(). */ trace_seq_printf(&iter->seq, "%3d,%-3d %llx,%-llx %2s %3s ", MAJOR(t->device), MINOR(t->device), id & U32_MAX, id >> 32, act, rwbs); } } else trace_seq_printf(&iter->seq, "%3d,%-3d %2s %3s ", MAJOR(t->device), MINOR(t->device), act, rwbs); } static void blk_log_dump_pdu(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { const unsigned char *pdu_buf; int pdu_len; int i, end; pdu_buf = pdu_start(ent, has_cg); pdu_len = pdu_real_len(ent, has_cg); if (!pdu_len) return; /* find the last zero that needs to be printed */ for (end = pdu_len - 1; end >= 0; end--) if (pdu_buf[end]) break; end++; trace_seq_putc(s, '('); for (i = 0; i < pdu_len; i++) { trace_seq_printf(s, "%s%02x", i == 0 ? "" : " ", pdu_buf[i]); /* * stop when the rest is just zeros and indicate so * with a ".." appended */ if (i == end && end != pdu_len - 1) { trace_seq_puts(s, " ..) "); return; } } trace_seq_puts(s, ") "); } static void blk_log_generic(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { char cmd[TASK_COMM_LEN]; trace_find_cmdline(ent->pid, cmd); if (t_action(ent) & BLK_TC_ACT(BLK_TC_PC)) { trace_seq_printf(s, "%u ", t_bytes(ent)); blk_log_dump_pdu(s, ent, has_cg); trace_seq_printf(s, "[%s]\n", cmd); } else { if (t_sec(ent)) trace_seq_printf(s, "%llu + %u [%s]\n", t_sector(ent), t_sec(ent), cmd); else trace_seq_printf(s, "[%s]\n", cmd); } } static void blk_log_with_error(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { if (t_action(ent) & BLK_TC_ACT(BLK_TC_PC)) { blk_log_dump_pdu(s, ent, has_cg); trace_seq_printf(s, "[%d]\n", t_error(ent)); } else { if (t_sec(ent)) trace_seq_printf(s, "%llu + %u [%d]\n", t_sector(ent), t_sec(ent), t_error(ent)); else trace_seq_printf(s, "%llu [%d]\n", t_sector(ent), t_error(ent)); } } static void blk_log_remap(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg); trace_seq_printf(s, "%llu + %u <- (%d,%d) %llu\n", t_sector(ent), t_sec(ent), MAJOR(be32_to_cpu(__r->device_from)), MINOR(be32_to_cpu(__r->device_from)), be64_to_cpu(__r->sector_from)); } static void blk_log_plug(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { char cmd[TASK_COMM_LEN]; trace_find_cmdline(ent->pid, cmd); trace_seq_printf(s, "[%s]\n", cmd); } static void blk_log_unplug(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { char cmd[TASK_COMM_LEN]; trace_find_cmdline(ent->pid, cmd); trace_seq_printf(s, "[%s] %llu\n", cmd, get_pdu_int(ent, has_cg)); } static void blk_log_split(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { char cmd[TASK_COMM_LEN]; trace_find_cmdline(ent->pid, cmd); trace_seq_printf(s, "%llu / %llu [%s]\n", t_sector(ent), get_pdu_int(ent, has_cg), cmd); } static void blk_log_msg(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { trace_seq_putmem(s, pdu_start(ent, has_cg), pdu_real_len(ent, has_cg)); trace_seq_putc(s, '\n'); } /* * struct tracer operations */ static void blk_tracer_print_header(struct seq_file *m) { if (!(blk_tracer_flags.val & TRACE_BLK_OPT_CLASSIC)) return; seq_puts(m, "# DEV CPU TIMESTAMP PID ACT FLG\n" "# | | | | | |\n"); } static void blk_tracer_start(struct trace_array *tr) { blk_tracer_enabled = true; } static int blk_tracer_init(struct trace_array *tr) { blk_tr = tr; blk_tracer_start(tr); return 0; } static void blk_tracer_stop(struct trace_array *tr) { blk_tracer_enabled = false; } static void blk_tracer_reset(struct trace_array *tr) { blk_tracer_stop(tr); } static const struct { const char *act[2]; void (*print)(struct trace_seq *s, const struct trace_entry *ent, bool has_cg); } what2act[] = { [__BLK_TA_QUEUE] = {{ "Q", "queue" }, blk_log_generic }, [__BLK_TA_BACKMERGE] = {{ "M", "backmerge" }, blk_log_generic }, [__BLK_TA_FRONTMERGE] = {{ "F", "frontmerge" }, blk_log_generic }, [__BLK_TA_GETRQ] = {{ "G", "getrq" }, blk_log_generic }, [__BLK_TA_SLEEPRQ] = {{ "S", "sleeprq" }, blk_log_generic }, [__BLK_TA_REQUEUE] = {{ "R", "requeue" }, blk_log_with_error }, [__BLK_TA_ISSUE] = {{ "D", "issue" }, blk_log_generic }, [__BLK_TA_COMPLETE] = {{ "C", "complete" }, blk_log_with_error }, [__BLK_TA_PLUG] = {{ "P", "plug" }, blk_log_plug }, [__BLK_TA_UNPLUG_IO] = {{ "U", "unplug_io" }, blk_log_unplug }, [__BLK_TA_UNPLUG_TIMER] = {{ "UT", "unplug_timer" }, blk_log_unplug }, [__BLK_TA_INSERT] = {{ "I", "insert" }, blk_log_generic }, [__BLK_TA_SPLIT] = {{ "X", "split" }, blk_log_split }, [__BLK_TA_BOUNCE] = {{ "B", "bounce" }, blk_log_generic }, [__BLK_TA_REMAP] = {{ "A", "remap" }, blk_log_remap }, }; static enum print_line_t print_one_line(struct trace_iterator *iter, bool classic) { struct trace_array *tr = iter->tr; struct trace_seq *s = &iter->seq; const struct blk_io_trace *t; u16 what; bool long_act; blk_log_action_t *log_action; bool has_cg; t = te_blk_io_trace(iter->ent); what = (t->action & ((1 << BLK_TC_SHIFT) - 1)) & ~__BLK_TA_CGROUP; long_act = !!(tr->trace_flags & TRACE_ITER_VERBOSE); log_action = classic ? &blk_log_action_classic : &blk_log_action; has_cg = t->action & __BLK_TA_CGROUP; if ((t->action & ~__BLK_TN_CGROUP) == BLK_TN_MESSAGE) { log_action(iter, long_act ? "message" : "m", has_cg); blk_log_msg(s, iter->ent, has_cg); return trace_handle_return(s); } if (unlikely(what == 0 || what >= ARRAY_SIZE(what2act))) trace_seq_printf(s, "Unknown action %x\n", what); else { log_action(iter, what2act[what].act[long_act], has_cg); what2act[what].print(s, iter->ent, has_cg); } return trace_handle_return(s); } static enum print_line_t blk_trace_event_print(struct trace_iterator *iter, int flags, struct trace_event *event) { return print_one_line(iter, false); } static void blk_trace_synthesize_old_trace(struct trace_iterator *iter) { struct trace_seq *s = &iter->seq; struct blk_io_trace *t = (struct blk_io_trace *)iter->ent; const int offset = offsetof(struct blk_io_trace, sector); struct blk_io_trace old = { .magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION, .time = iter->ts, }; trace_seq_putmem(s, &old, offset); trace_seq_putmem(s, &t->sector, sizeof(old) - offset + t->pdu_len); } static enum print_line_t blk_trace_event_print_binary(struct trace_iterator *iter, int flags, struct trace_event *event) { blk_trace_synthesize_old_trace(iter); return trace_handle_return(&iter->seq); } static enum print_line_t blk_tracer_print_line(struct trace_iterator *iter) { if ((iter->ent->type != TRACE_BLK) || !(blk_tracer_flags.val & TRACE_BLK_OPT_CLASSIC)) return TRACE_TYPE_UNHANDLED; return print_one_line(iter, true); } static int blk_tracer_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set) { /* don't output context-info for blk_classic output */ if (bit == TRACE_BLK_OPT_CLASSIC) { if (set) tr->trace_flags &= ~TRACE_ITER_CONTEXT_INFO; else tr->trace_flags |= TRACE_ITER_CONTEXT_INFO; } return 0; } static struct tracer blk_tracer __read_mostly = { .name = "blk", .init = blk_tracer_init, .reset = blk_tracer_reset, .start = blk_tracer_start, .stop = blk_tracer_stop, .print_header = blk_tracer_print_header, .print_line = blk_tracer_print_line, .flags = &blk_tracer_flags, .set_flag = blk_tracer_set_flag, }; static struct trace_event_functions trace_blk_event_funcs = { .trace = blk_trace_event_print, .binary = blk_trace_event_print_binary, }; static struct trace_event trace_blk_event = { .type = TRACE_BLK, .funcs = &trace_blk_event_funcs, }; static int __init init_blk_tracer(void) { if (!register_trace_event(&trace_blk_event)) { pr_warn("Warning: could not register block events\n"); return 1; } if (register_tracer(&blk_tracer) != 0) { pr_warn("Warning: could not register the block tracer\n"); unregister_trace_event(&trace_blk_event); return 1; } return 0; } device_initcall(init_blk_tracer); static int blk_trace_remove_queue(struct request_queue *q) { struct blk_trace *bt; bt = rcu_replace_pointer(q->blk_trace, NULL, lockdep_is_held(&q->debugfs_mutex)); if (bt == NULL) return -EINVAL; blk_trace_stop(bt); put_probe_ref(); synchronize_rcu(); blk_trace_free(q, bt); return 0; } /* * Setup everything required to start tracing */ static int blk_trace_setup_queue(struct request_queue *q, struct block_device *bdev) { struct blk_trace *bt = NULL; int ret = -ENOMEM; bt = kzalloc(sizeof(*bt), GFP_KERNEL); if (!bt) return -ENOMEM; bt->msg_data = __alloc_percpu(BLK_TN_MAX_MSG, __alignof__(char)); if (!bt->msg_data) goto free_bt; bt->dev = bdev->bd_dev; bt->act_mask = (u16)-1; blk_trace_setup_lba(bt, bdev); rcu_assign_pointer(q->blk_trace, bt); get_probe_ref(); return 0; free_bt: blk_trace_free(q, bt); return ret; } /* * sysfs interface to enable and configure tracing */ static ssize_t sysfs_blk_trace_attr_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t sysfs_blk_trace_attr_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); #define BLK_TRACE_DEVICE_ATTR(_name) \ DEVICE_ATTR(_name, S_IRUGO | S_IWUSR, \ sysfs_blk_trace_attr_show, \ sysfs_blk_trace_attr_store) static BLK_TRACE_DEVICE_ATTR(enable); static BLK_TRACE_DEVICE_ATTR(act_mask); static BLK_TRACE_DEVICE_ATTR(pid); static BLK_TRACE_DEVICE_ATTR(start_lba); static BLK_TRACE_DEVICE_ATTR(end_lba); static struct attribute *blk_trace_attrs[] = { &dev_attr_enable.attr, &dev_attr_act_mask.attr, &dev_attr_pid.attr, &dev_attr_start_lba.attr, &dev_attr_end_lba.attr, NULL }; struct attribute_group blk_trace_attr_group = { .name = "trace", .attrs = blk_trace_attrs, }; static const struct { int mask; const char *str; } mask_maps[] = { { BLK_TC_READ, "read" }, { BLK_TC_WRITE, "write" }, { BLK_TC_FLUSH, "flush" }, { BLK_TC_SYNC, "sync" }, { BLK_TC_QUEUE, "queue" }, { BLK_TC_REQUEUE, "requeue" }, { BLK_TC_ISSUE, "issue" }, { BLK_TC_COMPLETE, "complete" }, { BLK_TC_FS, "fs" }, { BLK_TC_PC, "pc" }, { BLK_TC_NOTIFY, "notify" }, { BLK_TC_AHEAD, "ahead" }, { BLK_TC_META, "meta" }, { BLK_TC_DISCARD, "discard" }, { BLK_TC_DRV_DATA, "drv_data" }, { BLK_TC_FUA, "fua" }, }; static int blk_trace_str2mask(const char *str) { int i; int mask = 0; char *buf, *s, *token; buf = kstrdup(str, GFP_KERNEL); if (buf == NULL) return -ENOMEM; s = strstrip(buf); while (1) { token = strsep(&s, ","); if (token == NULL) break; if (*token == '\0') continue; for (i = 0; i < ARRAY_SIZE(mask_maps); i++) { if (strcasecmp(token, mask_maps[i].str) == 0) { mask |= mask_maps[i].mask; break; } } if (i == ARRAY_SIZE(mask_maps)) { mask = -EINVAL; break; } } kfree(buf); return mask; } static ssize_t blk_trace_mask2str(char *buf, int mask) { int i; char *p = buf; for (i = 0; i < ARRAY_SIZE(mask_maps); i++) { if (mask & mask_maps[i].mask) { p += sprintf(p, "%s%s", (p == buf) ? "" : ",", mask_maps[i].str); } } *p++ = '\n'; return p - buf; } static ssize_t sysfs_blk_trace_attr_show(struct device *dev, struct device_attribute *attr, char *buf) { struct block_device *bdev = dev_to_bdev(dev); struct request_queue *q = bdev_get_queue(bdev); struct blk_trace *bt; ssize_t ret = -ENXIO; mutex_lock(&q->debugfs_mutex); bt = rcu_dereference_protected(q->blk_trace, lockdep_is_held(&q->debugfs_mutex)); if (attr == &dev_attr_enable) { ret = sprintf(buf, "%u\n", !!bt); goto out_unlock_bdev; } if (bt == NULL) ret = sprintf(buf, "disabled\n"); else if (attr == &dev_attr_act_mask) ret = blk_trace_mask2str(buf, bt->act_mask); else if (attr == &dev_attr_pid) ret = sprintf(buf, "%u\n", bt->pid); else if (attr == &dev_attr_start_lba) ret = sprintf(buf, "%llu\n", bt->start_lba); else if (attr == &dev_attr_end_lba) ret = sprintf(buf, "%llu\n", bt->end_lba); out_unlock_bdev: mutex_unlock(&q->debugfs_mutex); return ret; } static ssize_t sysfs_blk_trace_attr_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct block_device *bdev = dev_to_bdev(dev); struct request_queue *q = bdev_get_queue(bdev); struct blk_trace *bt; u64 value; ssize_t ret = -EINVAL; if (count == 0) goto out; if (attr == &dev_attr_act_mask) { if (kstrtoull(buf, 0, &value)) { /* Assume it is a list of trace category names */ ret = blk_trace_str2mask(buf); if (ret < 0) goto out; value = ret; } } else { if (kstrtoull(buf, 0, &value)) goto out; } mutex_lock(&q->debugfs_mutex); bt = rcu_dereference_protected(q->blk_trace, lockdep_is_held(&q->debugfs_mutex)); if (attr == &dev_attr_enable) { if (!!value == !!bt) { ret = 0; goto out_unlock_bdev; } if (value) ret = blk_trace_setup_queue(q, bdev); else ret = blk_trace_remove_queue(q); goto out_unlock_bdev; } ret = 0; if (bt == NULL) { ret = blk_trace_setup_queue(q, bdev); bt = rcu_dereference_protected(q->blk_trace, lockdep_is_held(&q->debugfs_mutex)); } if (ret == 0) { if (attr == &dev_attr_act_mask) bt->act_mask = value; else if (attr == &dev_attr_pid) bt->pid = value; else if (attr == &dev_attr_start_lba) bt->start_lba = value; else if (attr == &dev_attr_end_lba) bt->end_lba = value; } out_unlock_bdev: mutex_unlock(&q->debugfs_mutex); out: return ret ? ret : count; } #endif /* CONFIG_BLK_DEV_IO_TRACE */ #ifdef CONFIG_EVENT_TRACING /** * blk_fill_rwbs - Fill the buffer rwbs by mapping op to character string. * @rwbs: buffer to be filled * @opf: request operation type (REQ_OP_XXX) and flags for the tracepoint * * Description: * Maps each request operation and flag to a single character and fills the * buffer provided by the caller with resulting string. * **/ void blk_fill_rwbs(char *rwbs, blk_opf_t opf) { int i = 0; if (opf & REQ_PREFLUSH) rwbs[i++] = 'F'; switch (opf & REQ_OP_MASK) { case REQ_OP_WRITE: rwbs[i++] = 'W'; break; case REQ_OP_DISCARD: rwbs[i++] = 'D'; break; case REQ_OP_SECURE_ERASE: rwbs[i++] = 'D'; rwbs[i++] = 'E'; break; case REQ_OP_FLUSH: rwbs[i++] = 'F'; break; case REQ_OP_READ: rwbs[i++] = 'R'; break; default: rwbs[i++] = 'N'; } if (opf & REQ_FUA) rwbs[i++] = 'F'; if (opf & REQ_RAHEAD) rwbs[i++] = 'A'; if (opf & REQ_SYNC) rwbs[i++] = 'S'; if (opf & REQ_META) rwbs[i++] = 'M'; rwbs[i] = '\0'; } EXPORT_SYMBOL_GPL(blk_fill_rwbs); #endif /* CONFIG_EVENT_TRACING */ |
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12003 12004 12005 12006 12007 12008 12009 12010 12011 12012 12013 12014 12015 12016 12017 12018 12019 12020 12021 12022 12023 12024 12025 12026 12027 12028 12029 12030 12031 12032 12033 12034 12035 12036 12037 12038 12039 12040 12041 12042 12043 12044 12045 12046 12047 12048 12049 12050 12051 12052 12053 12054 12055 12056 12057 12058 12059 12060 12061 12062 12063 12064 12065 12066 12067 12068 12069 12070 12071 12072 12073 12074 12075 12076 12077 12078 12079 12080 12081 12082 12083 12084 12085 12086 12087 12088 12089 12090 12091 12092 12093 12094 12095 12096 12097 12098 12099 12100 12101 12102 12103 12104 12105 12106 12107 12108 12109 12110 12111 12112 12113 12114 12115 12116 12117 12118 12119 12120 12121 12122 12123 12124 12125 12126 12127 12128 12129 12130 12131 12132 12133 12134 12135 12136 12137 12138 12139 12140 12141 12142 12143 12144 12145 12146 12147 12148 12149 12150 12151 12152 12153 12154 12155 12156 12157 12158 12159 12160 12161 12162 12163 12164 12165 12166 12167 12168 12169 12170 12171 12172 12173 12174 12175 12176 12177 12178 12179 12180 12181 12182 12183 12184 12185 12186 12187 12188 12189 12190 12191 12192 12193 12194 12195 12196 12197 12198 12199 12200 12201 12202 12203 12204 12205 12206 12207 12208 12209 12210 12211 12212 12213 12214 12215 12216 12217 12218 12219 12220 12221 12222 12223 12224 12225 12226 12227 12228 12229 12230 12231 12232 12233 12234 12235 12236 12237 12238 12239 12240 12241 12242 12243 12244 12245 12246 12247 12248 12249 12250 12251 12252 12253 12254 12255 12256 12257 12258 12259 12260 12261 12262 12263 12264 12265 12266 12267 12268 12269 12270 12271 12272 12273 12274 12275 12276 12277 12278 12279 12280 12281 12282 12283 12284 12285 12286 12287 12288 12289 12290 12291 12292 12293 12294 12295 12296 12297 12298 12299 12300 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Linux Socket Filter - Kernel level socket filtering * * Based on the design of the Berkeley Packet Filter. The new * internal format has been designed by PLUMgrid: * * Copyright (c) 2011 - 2014 PLUMgrid, http://plumgrid.com * * Authors: * * Jay Schulist <jschlst@samba.org> * Alexei Starovoitov <ast@plumgrid.com> * Daniel Borkmann <dborkman@redhat.com> * * Andi Kleen - Fix a few bad bugs and races. * Kris Katterjohn - Added many additional checks in bpf_check_classic() */ #include <linux/atomic.h> #include <linux/bpf_verifier.h> #include <linux/module.h> #include <linux/types.h> #include <linux/mm.h> #include <linux/fcntl.h> #include <linux/socket.h> #include <linux/sock_diag.h> #include <linux/in.h> #include <linux/inet.h> #include <linux/netdevice.h> #include <linux/if_packet.h> #include <linux/if_arp.h> #include <linux/gfp.h> #include <net/inet_common.h> #include <net/ip.h> #include <net/protocol.h> #include <net/netlink.h> #include <linux/skbuff.h> #include <linux/skmsg.h> #include <net/sock.h> #include <net/flow_dissector.h> #include <linux/errno.h> #include <linux/timer.h> #include <linux/uaccess.h> #include <linux/unaligned.h> #include <linux/filter.h> #include <linux/ratelimit.h> #include <linux/seccomp.h> #include <linux/if_vlan.h> #include <linux/bpf.h> #include <linux/btf.h> #include <net/sch_generic.h> #include <net/cls_cgroup.h> #include <net/dst_metadata.h> #include <net/dst.h> #include <net/sock_reuseport.h> #include <net/busy_poll.h> #include <net/tcp.h> #include <net/xfrm.h> #include <net/udp.h> #include <linux/bpf_trace.h> #include <net/xdp_sock.h> #include <linux/inetdevice.h> #include <net/inet_hashtables.h> #include <net/inet6_hashtables.h> #include <net/ip_fib.h> #include <net/nexthop.h> #include <net/flow.h> #include <net/arp.h> #include <net/ipv6.h> #include <net/net_namespace.h> #include <linux/seg6_local.h> #include <net/seg6.h> #include <net/seg6_local.h> #include <net/lwtunnel.h> #include <net/ipv6_stubs.h> #include <net/bpf_sk_storage.h> #include <net/transp_v6.h> #include <linux/btf_ids.h> #include <net/tls.h> #include <net/xdp.h> #include <net/mptcp.h> #include <net/netfilter/nf_conntrack_bpf.h> #include <net/netkit.h> #include <linux/un.h> #include <net/xdp_sock_drv.h> #include <net/inet_dscp.h> #include "dev.h" /* Keep the struct bpf_fib_lookup small so that it fits into a cacheline */ static_assert(sizeof(struct bpf_fib_lookup) == 64, "struct bpf_fib_lookup size check"); static const struct bpf_func_proto * bpf_sk_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog); int copy_bpf_fprog_from_user(struct sock_fprog *dst, sockptr_t src, int len) { if (in_compat_syscall()) { struct compat_sock_fprog f32; if (len != sizeof(f32)) return -EINVAL; if (copy_from_sockptr(&f32, src, sizeof(f32))) return -EFAULT; memset(dst, 0, sizeof(*dst)); dst->len = f32.len; dst->filter = compat_ptr(f32.filter); } else { if (len != sizeof(*dst)) return -EINVAL; if (copy_from_sockptr(dst, src, sizeof(*dst))) return -EFAULT; } return 0; } EXPORT_SYMBOL_GPL(copy_bpf_fprog_from_user); /** * sk_filter_trim_cap - run a packet through a socket filter * @sk: sock associated with &sk_buff * @skb: buffer to filter * @cap: limit on how short the eBPF program may trim the packet * * Run the eBPF program and then cut skb->data to correct size returned by * the program. If pkt_len is 0 we toss packet. If skb->len is smaller * than pkt_len we keep whole skb->data. This is the socket level * wrapper to bpf_prog_run. It returns 0 if the packet should * be accepted or -EPERM if the packet should be tossed. * */ int sk_filter_trim_cap(struct sock *sk, struct sk_buff *skb, unsigned int cap) { int err; struct sk_filter *filter; /* * If the skb was allocated from pfmemalloc reserves, only * allow SOCK_MEMALLOC sockets to use it as this socket is * helping free memory */ if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC)) { NET_INC_STATS(sock_net(sk), LINUX_MIB_PFMEMALLOCDROP); return -ENOMEM; } err = BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb); if (err) return err; err = security_sock_rcv_skb(sk, skb); if (err) return err; rcu_read_lock(); filter = rcu_dereference(sk->sk_filter); if (filter) { struct sock *save_sk = skb->sk; unsigned int pkt_len; skb->sk = sk; pkt_len = bpf_prog_run_save_cb(filter->prog, skb); skb->sk = save_sk; err = pkt_len ? pskb_trim(skb, max(cap, pkt_len)) : -EPERM; } rcu_read_unlock(); return err; } EXPORT_SYMBOL(sk_filter_trim_cap); BPF_CALL_1(bpf_skb_get_pay_offset, struct sk_buff *, skb) { return skb_get_poff(skb); } BPF_CALL_3(bpf_skb_get_nlattr, struct sk_buff *, skb, u32, a, u32, x) { struct nlattr *nla; if (skb_is_nonlinear(skb)) return 0; if (skb->len < sizeof(struct nlattr)) return 0; if (a > skb->len - sizeof(struct nlattr)) return 0; nla = nla_find((struct nlattr *) &skb->data[a], skb->len - a, x); if (nla) return (void *) nla - (void *) skb->data; return 0; } BPF_CALL_3(bpf_skb_get_nlattr_nest, struct sk_buff *, skb, u32, a, u32, x) { struct nlattr *nla; if (skb_is_nonlinear(skb)) return 0; if (skb->len < sizeof(struct nlattr)) return 0; if (a > skb->len - sizeof(struct nlattr)) return 0; nla = (struct nlattr *) &skb->data[a]; if (!nla_ok(nla, skb->len - a)) return 0; nla = nla_find_nested(nla, x); if (nla) return (void *) nla - (void *) skb->data; return 0; } static int bpf_skb_load_helper_convert_offset(const struct sk_buff *skb, int offset) { if (likely(offset >= 0)) return offset; if (offset >= SKF_NET_OFF) return offset - SKF_NET_OFF + skb_network_offset(skb); if (offset >= SKF_LL_OFF && skb_mac_header_was_set(skb)) return offset - SKF_LL_OFF + skb_mac_offset(skb); return INT_MIN; } BPF_CALL_4(bpf_skb_load_helper_8, const struct sk_buff *, skb, const void *, data, int, headlen, int, offset) { u8 tmp; const int len = sizeof(tmp); offset = bpf_skb_load_helper_convert_offset(skb, offset); if (offset == INT_MIN) return -EFAULT; if (headlen - offset >= len) return *(u8 *)(data + offset); if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp))) return tmp; else return -EFAULT; } BPF_CALL_2(bpf_skb_load_helper_8_no_cache, const struct sk_buff *, skb, int, offset) { return ____bpf_skb_load_helper_8(skb, skb->data, skb->len - skb->data_len, offset); } BPF_CALL_4(bpf_skb_load_helper_16, const struct sk_buff *, skb, const void *, data, int, headlen, int, offset) { __be16 tmp; const int len = sizeof(tmp); offset = bpf_skb_load_helper_convert_offset(skb, offset); if (offset == INT_MIN) return -EFAULT; if (headlen - offset >= len) return get_unaligned_be16(data + offset); if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp))) return be16_to_cpu(tmp); else return -EFAULT; } BPF_CALL_2(bpf_skb_load_helper_16_no_cache, const struct sk_buff *, skb, int, offset) { return ____bpf_skb_load_helper_16(skb, skb->data, skb->len - skb->data_len, offset); } BPF_CALL_4(bpf_skb_load_helper_32, const struct sk_buff *, skb, const void *, data, int, headlen, int, offset) { __be32 tmp; const int len = sizeof(tmp); offset = bpf_skb_load_helper_convert_offset(skb, offset); if (offset == INT_MIN) return -EFAULT; if (headlen - offset >= len) return get_unaligned_be32(data + offset); if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp))) return be32_to_cpu(tmp); else return -EFAULT; } BPF_CALL_2(bpf_skb_load_helper_32_no_cache, const struct sk_buff *, skb, int, offset) { return ____bpf_skb_load_helper_32(skb, skb->data, skb->len - skb->data_len, offset); } static u32 convert_skb_access(int skb_field, int dst_reg, int src_reg, struct bpf_insn *insn_buf) { struct bpf_insn *insn = insn_buf; switch (skb_field) { case SKF_AD_MARK: BUILD_BUG_ON(sizeof_field(struct sk_buff, mark) != 4); *insn++ = BPF_LDX_MEM(BPF_W, dst_reg, src_reg, offsetof(struct sk_buff, mark)); break; case SKF_AD_PKTTYPE: *insn++ = BPF_LDX_MEM(BPF_B, dst_reg, src_reg, PKT_TYPE_OFFSET); *insn++ = BPF_ALU32_IMM(BPF_AND, dst_reg, PKT_TYPE_MAX); #ifdef __BIG_ENDIAN_BITFIELD *insn++ = BPF_ALU32_IMM(BPF_RSH, dst_reg, 5); #endif break; case SKF_AD_QUEUE: BUILD_BUG_ON(sizeof_field(struct sk_buff, queue_mapping) != 2); *insn++ = BPF_LDX_MEM(BPF_H, dst_reg, src_reg, offsetof(struct sk_buff, queue_mapping)); break; case SKF_AD_VLAN_TAG: BUILD_BUG_ON(sizeof_field(struct sk_buff, vlan_tci) != 2); /* dst_reg = *(u16 *) (src_reg + offsetof(vlan_tci)) */ *insn++ = BPF_LDX_MEM(BPF_H, dst_reg, src_reg, offsetof(struct sk_buff, vlan_tci)); break; case SKF_AD_VLAN_TAG_PRESENT: BUILD_BUG_ON(sizeof_field(struct sk_buff, vlan_all) != 4); *insn++ = BPF_LDX_MEM(BPF_W, dst_reg, src_reg, offsetof(struct sk_buff, vlan_all)); *insn++ = BPF_JMP_IMM(BPF_JEQ, dst_reg, 0, 1); *insn++ = BPF_ALU32_IMM(BPF_MOV, dst_reg, 1); break; } return insn - insn_buf; } static bool convert_bpf_extensions(struct sock_filter *fp, struct bpf_insn **insnp) { struct bpf_insn *insn = *insnp; u32 cnt; switch (fp->k) { case SKF_AD_OFF + SKF_AD_PROTOCOL: BUILD_BUG_ON(sizeof_field(struct sk_buff, protocol) != 2); /* A = *(u16 *) (CTX + offsetof(protocol)) */ *insn++ = BPF_LDX_MEM(BPF_H, BPF_REG_A, BPF_REG_CTX, offsetof(struct sk_buff, protocol)); /* A = ntohs(A) [emitting a nop or swap16] */ *insn = BPF_ENDIAN(BPF_FROM_BE, BPF_REG_A, 16); break; case SKF_AD_OFF + SKF_AD_PKTTYPE: cnt = convert_skb_access(SKF_AD_PKTTYPE, BPF_REG_A, BPF_REG_CTX, insn); insn += cnt - 1; break; case SKF_AD_OFF + SKF_AD_IFINDEX: case SKF_AD_OFF + SKF_AD_HATYPE: BUILD_BUG_ON(sizeof_field(struct net_device, ifindex) != 4); BUILD_BUG_ON(sizeof_field(struct net_device, type) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, dev), BPF_REG_TMP, BPF_REG_CTX, offsetof(struct sk_buff, dev)); /* if (tmp != 0) goto pc + 1 */ *insn++ = BPF_JMP_IMM(BPF_JNE, BPF_REG_TMP, 0, 1); *insn++ = BPF_EXIT_INSN(); if (fp->k == SKF_AD_OFF + SKF_AD_IFINDEX) *insn = BPF_LDX_MEM(BPF_W, BPF_REG_A, BPF_REG_TMP, offsetof(struct net_device, ifindex)); else *insn = BPF_LDX_MEM(BPF_H, BPF_REG_A, BPF_REG_TMP, offsetof(struct net_device, type)); break; case SKF_AD_OFF + SKF_AD_MARK: cnt = convert_skb_access(SKF_AD_MARK, BPF_REG_A, BPF_REG_CTX, insn); insn += cnt - 1; break; case SKF_AD_OFF + SKF_AD_RXHASH: BUILD_BUG_ON(sizeof_field(struct sk_buff, hash) != 4); *insn = BPF_LDX_MEM(BPF_W, BPF_REG_A, BPF_REG_CTX, offsetof(struct sk_buff, hash)); break; case SKF_AD_OFF + SKF_AD_QUEUE: cnt = convert_skb_access(SKF_AD_QUEUE, BPF_REG_A, BPF_REG_CTX, insn); insn += cnt - 1; break; case SKF_AD_OFF + SKF_AD_VLAN_TAG: cnt = convert_skb_access(SKF_AD_VLAN_TAG, BPF_REG_A, BPF_REG_CTX, insn); insn += cnt - 1; break; case SKF_AD_OFF + SKF_AD_VLAN_TAG_PRESENT: cnt = convert_skb_access(SKF_AD_VLAN_TAG_PRESENT, BPF_REG_A, BPF_REG_CTX, insn); insn += cnt - 1; break; case SKF_AD_OFF + SKF_AD_VLAN_TPID: BUILD_BUG_ON(sizeof_field(struct sk_buff, vlan_proto) != 2); /* A = *(u16 *) (CTX + offsetof(vlan_proto)) */ *insn++ = BPF_LDX_MEM(BPF_H, BPF_REG_A, BPF_REG_CTX, offsetof(struct sk_buff, vlan_proto)); /* A = ntohs(A) [emitting a nop or swap16] */ *insn = BPF_ENDIAN(BPF_FROM_BE, BPF_REG_A, 16); break; case SKF_AD_OFF + SKF_AD_PAY_OFFSET: case SKF_AD_OFF + SKF_AD_NLATTR: case SKF_AD_OFF + SKF_AD_NLATTR_NEST: case SKF_AD_OFF + SKF_AD_CPU: case SKF_AD_OFF + SKF_AD_RANDOM: /* arg1 = CTX */ *insn++ = BPF_MOV64_REG(BPF_REG_ARG1, BPF_REG_CTX); /* arg2 = A */ *insn++ = BPF_MOV64_REG(BPF_REG_ARG2, BPF_REG_A); /* arg3 = X */ *insn++ = BPF_MOV64_REG(BPF_REG_ARG3, BPF_REG_X); /* Emit call(arg1=CTX, arg2=A, arg3=X) */ switch (fp->k) { case SKF_AD_OFF + SKF_AD_PAY_OFFSET: *insn = BPF_EMIT_CALL(bpf_skb_get_pay_offset); break; case SKF_AD_OFF + SKF_AD_NLATTR: *insn = BPF_EMIT_CALL(bpf_skb_get_nlattr); break; case SKF_AD_OFF + SKF_AD_NLATTR_NEST: *insn = BPF_EMIT_CALL(bpf_skb_get_nlattr_nest); break; case SKF_AD_OFF + SKF_AD_CPU: *insn = BPF_EMIT_CALL(bpf_get_raw_cpu_id); break; case SKF_AD_OFF + SKF_AD_RANDOM: *insn = BPF_EMIT_CALL(bpf_user_rnd_u32); bpf_user_rnd_init_once(); break; } break; case SKF_AD_OFF + SKF_AD_ALU_XOR_X: /* A ^= X */ *insn = BPF_ALU32_REG(BPF_XOR, BPF_REG_A, BPF_REG_X); break; default: /* This is just a dummy call to avoid letting the compiler * evict __bpf_call_base() as an optimization. Placed here * where no-one bothers. */ BUG_ON(__bpf_call_base(0, 0, 0, 0, 0) != 0); return false; } *insnp = insn; return true; } static bool convert_bpf_ld_abs(struct sock_filter *fp, struct bpf_insn **insnp) { const bool unaligned_ok = IS_BUILTIN(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS); int size = bpf_size_to_bytes(BPF_SIZE(fp->code)); bool endian = BPF_SIZE(fp->code) == BPF_H || BPF_SIZE(fp->code) == BPF_W; bool indirect = BPF_MODE(fp->code) == BPF_IND; const int ip_align = NET_IP_ALIGN; struct bpf_insn *insn = *insnp; int offset = fp->k; if (!indirect && ((unaligned_ok && offset >= 0) || (!unaligned_ok && offset >= 0 && offset + ip_align >= 0 && offset + ip_align % size == 0))) { bool ldx_off_ok = offset <= S16_MAX; *insn++ = BPF_MOV64_REG(BPF_REG_TMP, BPF_REG_H); if (offset) *insn++ = BPF_ALU64_IMM(BPF_SUB, BPF_REG_TMP, offset); *insn++ = BPF_JMP_IMM(BPF_JSLT, BPF_REG_TMP, size, 2 + endian + (!ldx_off_ok * 2)); if (ldx_off_ok) { *insn++ = BPF_LDX_MEM(BPF_SIZE(fp->code), BPF_REG_A, BPF_REG_D, offset); } else { *insn++ = BPF_MOV64_REG(BPF_REG_TMP, BPF_REG_D); *insn++ = BPF_ALU64_IMM(BPF_ADD, BPF_REG_TMP, offset); *insn++ = BPF_LDX_MEM(BPF_SIZE(fp->code), BPF_REG_A, BPF_REG_TMP, 0); } if (endian) *insn++ = BPF_ENDIAN(BPF_FROM_BE, BPF_REG_A, size * 8); *insn++ = BPF_JMP_A(8); } *insn++ = BPF_MOV64_REG(BPF_REG_ARG1, BPF_REG_CTX); *insn++ = BPF_MOV64_REG(BPF_REG_ARG2, BPF_REG_D); *insn++ = BPF_MOV64_REG(BPF_REG_ARG3, BPF_REG_H); if (!indirect) { *insn++ = BPF_MOV64_IMM(BPF_REG_ARG4, offset); } else { *insn++ = BPF_MOV64_REG(BPF_REG_ARG4, BPF_REG_X); if (fp->k) *insn++ = BPF_ALU64_IMM(BPF_ADD, BPF_REG_ARG4, offset); } switch (BPF_SIZE(fp->code)) { case BPF_B: *insn++ = BPF_EMIT_CALL(bpf_skb_load_helper_8); break; case BPF_H: *insn++ = BPF_EMIT_CALL(bpf_skb_load_helper_16); break; case BPF_W: *insn++ = BPF_EMIT_CALL(bpf_skb_load_helper_32); break; default: return false; } *insn++ = BPF_JMP_IMM(BPF_JSGE, BPF_REG_A, 0, 2); *insn++ = BPF_ALU32_REG(BPF_XOR, BPF_REG_A, BPF_REG_A); *insn = BPF_EXIT_INSN(); *insnp = insn; return true; } /** * bpf_convert_filter - convert filter program * @prog: the user passed filter program * @len: the length of the user passed filter program * @new_prog: allocated 'struct bpf_prog' or NULL * @new_len: pointer to store length of converted program * @seen_ld_abs: bool whether we've seen ld_abs/ind * * Remap 'sock_filter' style classic BPF (cBPF) instruction set to 'bpf_insn' * style extended BPF (eBPF). * Conversion workflow: * * 1) First pass for calculating the new program length: * bpf_convert_filter(old_prog, old_len, NULL, &new_len, &seen_ld_abs) * * 2) 2nd pass to remap in two passes: 1st pass finds new * jump offsets, 2nd pass remapping: * bpf_convert_filter(old_prog, old_len, new_prog, &new_len, &seen_ld_abs) */ static int bpf_convert_filter(struct sock_filter *prog, int len, struct bpf_prog *new_prog, int *new_len, bool *seen_ld_abs) { int new_flen = 0, pass = 0, target, i, stack_off; struct bpf_insn *new_insn, *first_insn = NULL; struct sock_filter *fp; int *addrs = NULL; u8 bpf_src; BUILD_BUG_ON(BPF_MEMWORDS * sizeof(u32) > MAX_BPF_STACK); BUILD_BUG_ON(BPF_REG_FP + 1 != MAX_BPF_REG); if (len <= 0 || len > BPF_MAXINSNS) return -EINVAL; if (new_prog) { first_insn = new_prog->insnsi; addrs = kcalloc(len, sizeof(*addrs), GFP_KERNEL | __GFP_NOWARN); if (!addrs) return -ENOMEM; } do_pass: new_insn = first_insn; fp = prog; /* Classic BPF related prologue emission. */ if (new_prog) { /* Classic BPF expects A and X to be reset first. These need * to be guaranteed to be the first two instructions. */ *new_insn++ = BPF_ALU32_REG(BPF_XOR, BPF_REG_A, BPF_REG_A); *new_insn++ = BPF_ALU32_REG(BPF_XOR, BPF_REG_X, BPF_REG_X); /* All programs must keep CTX in callee saved BPF_REG_CTX. * In eBPF case it's done by the compiler, here we need to * do this ourself. Initial CTX is present in BPF_REG_ARG1. */ *new_insn++ = BPF_MOV64_REG(BPF_REG_CTX, BPF_REG_ARG1); if (*seen_ld_abs) { /* For packet access in classic BPF, cache skb->data * in callee-saved BPF R8 and skb->len - skb->data_len * (headlen) in BPF R9. Since classic BPF is read-only * on CTX, we only need to cache it once. */ *new_insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, data), BPF_REG_D, BPF_REG_CTX, offsetof(struct sk_buff, data)); *new_insn++ = BPF_LDX_MEM(BPF_W, BPF_REG_H, BPF_REG_CTX, offsetof(struct sk_buff, len)); *new_insn++ = BPF_LDX_MEM(BPF_W, BPF_REG_TMP, BPF_REG_CTX, offsetof(struct sk_buff, data_len)); *new_insn++ = BPF_ALU32_REG(BPF_SUB, BPF_REG_H, BPF_REG_TMP); } } else { new_insn += 3; } for (i = 0; i < len; fp++, i++) { struct bpf_insn tmp_insns[32] = { }; struct bpf_insn *insn = tmp_insns; if (addrs) addrs[i] = new_insn - first_insn; switch (fp->code) { /* All arithmetic insns and skb loads map as-is. */ case BPF_ALU | BPF_ADD | BPF_X: case BPF_ALU | BPF_ADD | BPF_K: case BPF_ALU | BPF_SUB | BPF_X: case BPF_ALU | BPF_SUB | BPF_K: case BPF_ALU | BPF_AND | BPF_X: case BPF_ALU | BPF_AND | BPF_K: case BPF_ALU | BPF_OR | BPF_X: case BPF_ALU | BPF_OR | BPF_K: case BPF_ALU | BPF_LSH | BPF_X: case BPF_ALU | BPF_LSH | BPF_K: case BPF_ALU | BPF_RSH | BPF_X: case BPF_ALU | BPF_RSH | BPF_K: case BPF_ALU | BPF_XOR | BPF_X: case BPF_ALU | BPF_XOR | BPF_K: case BPF_ALU | BPF_MUL | BPF_X: case BPF_ALU | BPF_MUL | BPF_K: case BPF_ALU | BPF_DIV | BPF_X: case BPF_ALU | BPF_DIV | BPF_K: case BPF_ALU | BPF_MOD | BPF_X: case BPF_ALU | BPF_MOD | BPF_K: case BPF_ALU | BPF_NEG: case BPF_LD | BPF_ABS | BPF_W: case BPF_LD | BPF_ABS | BPF_H: case BPF_LD | BPF_ABS | BPF_B: case BPF_LD | BPF_IND | BPF_W: case BPF_LD | BPF_IND | BPF_H: case BPF_LD | BPF_IND | BPF_B: /* Check for overloaded BPF extension and * directly convert it if found, otherwise * just move on with mapping. */ if (BPF_CLASS(fp->code) == BPF_LD && BPF_MODE(fp->code) == BPF_ABS && convert_bpf_extensions(fp, &insn)) break; if (BPF_CLASS(fp->code) == BPF_LD && convert_bpf_ld_abs(fp, &insn)) { *seen_ld_abs = true; break; } if (fp->code == (BPF_ALU | BPF_DIV | BPF_X) || fp->code == (BPF_ALU | BPF_MOD | BPF_X)) { *insn++ = BPF_MOV32_REG(BPF_REG_X, BPF_REG_X); /* Error with exception code on div/mod by 0. * For cBPF programs, this was always return 0. */ *insn++ = BPF_JMP_IMM(BPF_JNE, BPF_REG_X, 0, 2); *insn++ = BPF_ALU32_REG(BPF_XOR, BPF_REG_A, BPF_REG_A); *insn++ = BPF_EXIT_INSN(); } *insn = BPF_RAW_INSN(fp->code, BPF_REG_A, BPF_REG_X, 0, fp->k); break; /* Jump transformation cannot use BPF block macros * everywhere as offset calculation and target updates * require a bit more work than the rest, i.e. jump * opcodes map as-is, but offsets need adjustment. */ #define BPF_EMIT_JMP \ do { \ const s32 off_min = S16_MIN, off_max = S16_MAX; \ s32 off; \ \ if (target >= len || target < 0) \ goto err; \ off = addrs ? addrs[target] - addrs[i] - 1 : 0; \ /* Adjust pc relative offset for 2nd or 3rd insn. */ \ off -= insn - tmp_insns; \ /* Reject anything not fitting into insn->off. */ \ if (off < off_min || off > off_max) \ goto err; \ insn->off = off; \ } while (0) case BPF_JMP | BPF_JA: target = i + fp->k + 1; insn->code = fp->code; BPF_EMIT_JMP; break; case BPF_JMP | BPF_JEQ | BPF_K: case BPF_JMP | BPF_JEQ | BPF_X: case BPF_JMP | BPF_JSET | BPF_K: case BPF_JMP | BPF_JSET | BPF_X: case BPF_JMP | BPF_JGT | BPF_K: case BPF_JMP | BPF_JGT | BPF_X: case BPF_JMP | BPF_JGE | BPF_K: case BPF_JMP | BPF_JGE | BPF_X: if (BPF_SRC(fp->code) == BPF_K && (int) fp->k < 0) { /* BPF immediates are signed, zero extend * immediate into tmp register and use it * in compare insn. */ *insn++ = BPF_MOV32_IMM(BPF_REG_TMP, fp->k); insn->dst_reg = BPF_REG_A; insn->src_reg = BPF_REG_TMP; bpf_src = BPF_X; } else { insn->dst_reg = BPF_REG_A; insn->imm = fp->k; bpf_src = BPF_SRC(fp->code); insn->src_reg = bpf_src == BPF_X ? BPF_REG_X : 0; } /* Common case where 'jump_false' is next insn. */ if (fp->jf == 0) { insn->code = BPF_JMP | BPF_OP(fp->code) | bpf_src; target = i + fp->jt + 1; BPF_EMIT_JMP; break; } /* Convert some jumps when 'jump_true' is next insn. */ if (fp->jt == 0) { switch (BPF_OP(fp->code)) { case BPF_JEQ: insn->code = BPF_JMP | BPF_JNE | bpf_src; break; case BPF_JGT: insn->code = BPF_JMP | BPF_JLE | bpf_src; break; case BPF_JGE: insn->code = BPF_JMP | BPF_JLT | bpf_src; break; default: goto jmp_rest; } target = i + fp->jf + 1; BPF_EMIT_JMP; break; } jmp_rest: /* Other jumps are mapped into two insns: Jxx and JA. */ target = i + fp->jt + 1; insn->code = BPF_JMP | BPF_OP(fp->code) | bpf_src; BPF_EMIT_JMP; insn++; insn->code = BPF_JMP | BPF_JA; target = i + fp->jf + 1; BPF_EMIT_JMP; break; /* ldxb 4 * ([14] & 0xf) is remapped into 6 insns. */ case BPF_LDX | BPF_MSH | BPF_B: { struct sock_filter tmp = { .code = BPF_LD | BPF_ABS | BPF_B, .k = fp->k, }; *seen_ld_abs = true; /* X = A */ *insn++ = BPF_MOV64_REG(BPF_REG_X, BPF_REG_A); /* A = BPF_R0 = *(u8 *) (skb->data + K) */ convert_bpf_ld_abs(&tmp, &insn); insn++; /* A &= 0xf */ *insn++ = BPF_ALU32_IMM(BPF_AND, BPF_REG_A, 0xf); /* A <<= 2 */ *insn++ = BPF_ALU32_IMM(BPF_LSH, BPF_REG_A, 2); /* tmp = X */ *insn++ = BPF_MOV64_REG(BPF_REG_TMP, BPF_REG_X); /* X = A */ *insn++ = BPF_MOV64_REG(BPF_REG_X, BPF_REG_A); /* A = tmp */ *insn = BPF_MOV64_REG(BPF_REG_A, BPF_REG_TMP); break; } /* RET_K is remapped into 2 insns. RET_A case doesn't need an * extra mov as BPF_REG_0 is already mapped into BPF_REG_A. */ case BPF_RET | BPF_A: case BPF_RET | BPF_K: if (BPF_RVAL(fp->code) == BPF_K) *insn++ = BPF_MOV32_RAW(BPF_K, BPF_REG_0, 0, fp->k); *insn = BPF_EXIT_INSN(); break; /* Store to stack. */ case BPF_ST: case BPF_STX: stack_off = fp->k * 4 + 4; *insn = BPF_STX_MEM(BPF_W, BPF_REG_FP, BPF_CLASS(fp->code) == BPF_ST ? BPF_REG_A : BPF_REG_X, -stack_off); /* check_load_and_stores() verifies that classic BPF can * load from stack only after write, so tracking * stack_depth for ST|STX insns is enough */ if (new_prog && new_prog->aux->stack_depth < stack_off) new_prog->aux->stack_depth = stack_off; break; /* Load from stack. */ case BPF_LD | BPF_MEM: case BPF_LDX | BPF_MEM: stack_off = fp->k * 4 + 4; *insn = BPF_LDX_MEM(BPF_W, BPF_CLASS(fp->code) == BPF_LD ? BPF_REG_A : BPF_REG_X, BPF_REG_FP, -stack_off); break; /* A = K or X = K */ case BPF_LD | BPF_IMM: case BPF_LDX | BPF_IMM: *insn = BPF_MOV32_IMM(BPF_CLASS(fp->code) == BPF_LD ? BPF_REG_A : BPF_REG_X, fp->k); break; /* X = A */ case BPF_MISC | BPF_TAX: *insn = BPF_MOV64_REG(BPF_REG_X, BPF_REG_A); break; /* A = X */ case BPF_MISC | BPF_TXA: *insn = BPF_MOV64_REG(BPF_REG_A, BPF_REG_X); break; /* A = skb->len or X = skb->len */ case BPF_LD | BPF_W | BPF_LEN: case BPF_LDX | BPF_W | BPF_LEN: *insn = BPF_LDX_MEM(BPF_W, BPF_CLASS(fp->code) == BPF_LD ? BPF_REG_A : BPF_REG_X, BPF_REG_CTX, offsetof(struct sk_buff, len)); break; /* Access seccomp_data fields. */ case BPF_LDX | BPF_ABS | BPF_W: /* A = *(u32 *) (ctx + K) */ *insn = BPF_LDX_MEM(BPF_W, BPF_REG_A, BPF_REG_CTX, fp->k); break; /* Unknown instruction. */ default: goto err; } insn++; if (new_prog) memcpy(new_insn, tmp_insns, sizeof(*insn) * (insn - tmp_insns)); new_insn += insn - tmp_insns; } if (!new_prog) { /* Only calculating new length. */ *new_len = new_insn - first_insn; if (*seen_ld_abs) *new_len += 4; /* Prologue bits. */ return 0; } pass++; if (new_flen != new_insn - first_insn) { new_flen = new_insn - first_insn; if (pass > 2) goto err; goto do_pass; } kfree(addrs); BUG_ON(*new_len != new_flen); return 0; err: kfree(addrs); return -EINVAL; } /* Security: * * As we dont want to clear mem[] array for each packet going through * __bpf_prog_run(), we check that filter loaded by user never try to read * a cell if not previously written, and we check all branches to be sure * a malicious user doesn't try to abuse us. */ static int check_load_and_stores(const struct sock_filter *filter, int flen) { u16 *masks, memvalid = 0; /* One bit per cell, 16 cells */ int pc, ret = 0; BUILD_BUG_ON(BPF_MEMWORDS > 16); masks = kmalloc_array(flen, sizeof(*masks), GFP_KERNEL); if (!masks) return -ENOMEM; memset(masks, 0xff, flen * sizeof(*masks)); for (pc = 0; pc < flen; pc++) { memvalid &= masks[pc]; switch (filter[pc].code) { case BPF_ST: case BPF_STX: memvalid |= (1 << filter[pc].k); break; case BPF_LD | BPF_MEM: case BPF_LDX | BPF_MEM: if (!(memvalid & (1 << filter[pc].k))) { ret = -EINVAL; goto error; } break; case BPF_JMP | BPF_JA: /* A jump must set masks on target */ masks[pc + 1 + filter[pc].k] &= memvalid; memvalid = ~0; break; case BPF_JMP | BPF_JEQ | BPF_K: case BPF_JMP | BPF_JEQ | BPF_X: case BPF_JMP | BPF_JGE | BPF_K: case BPF_JMP | BPF_JGE | BPF_X: case BPF_JMP | BPF_JGT | BPF_K: case BPF_JMP | BPF_JGT | BPF_X: case BPF_JMP | BPF_JSET | BPF_K: case BPF_JMP | BPF_JSET | BPF_X: /* A jump must set masks on targets */ masks[pc + 1 + filter[pc].jt] &= memvalid; masks[pc + 1 + filter[pc].jf] &= memvalid; memvalid = ~0; break; } } error: kfree(masks); return ret; } static bool chk_code_allowed(u16 code_to_probe) { static const bool codes[] = { /* 32 bit ALU operations */ [BPF_ALU | BPF_ADD | BPF_K] = true, [BPF_ALU | BPF_ADD | BPF_X] = true, [BPF_ALU | BPF_SUB | BPF_K] = true, [BPF_ALU | BPF_SUB | BPF_X] = true, [BPF_ALU | BPF_MUL | BPF_K] = true, [BPF_ALU | BPF_MUL | BPF_X] = true, [BPF_ALU | BPF_DIV | BPF_K] = true, [BPF_ALU | BPF_DIV | BPF_X] = true, [BPF_ALU | BPF_MOD | BPF_K] = true, [BPF_ALU | BPF_MOD | BPF_X] = true, [BPF_ALU | BPF_AND | BPF_K] = true, [BPF_ALU | BPF_AND | BPF_X] = true, [BPF_ALU | BPF_OR | BPF_K] = true, [BPF_ALU | BPF_OR | BPF_X] = true, [BPF_ALU | BPF_XOR | BPF_K] = true, [BPF_ALU | BPF_XOR | BPF_X] = true, [BPF_ALU | BPF_LSH | BPF_K] = true, [BPF_ALU | BPF_LSH | BPF_X] = true, [BPF_ALU | BPF_RSH | BPF_K] = true, [BPF_ALU | BPF_RSH | BPF_X] = true, [BPF_ALU | BPF_NEG] = true, /* Load instructions */ [BPF_LD | BPF_W | BPF_ABS] = true, [BPF_LD | BPF_H | BPF_ABS] = true, [BPF_LD | BPF_B | BPF_ABS] = true, [BPF_LD | BPF_W | BPF_LEN] = true, [BPF_LD | BPF_W | BPF_IND] = true, [BPF_LD | BPF_H | BPF_IND] = true, [BPF_LD | BPF_B | BPF_IND] = true, [BPF_LD | BPF_IMM] = true, [BPF_LD | BPF_MEM] = true, [BPF_LDX | BPF_W | BPF_LEN] = true, [BPF_LDX | BPF_B | BPF_MSH] = true, [BPF_LDX | BPF_IMM] = true, [BPF_LDX | BPF_MEM] = true, /* Store instructions */ [BPF_ST] = true, [BPF_STX] = true, /* Misc instructions */ [BPF_MISC | BPF_TAX] = true, [BPF_MISC | BPF_TXA] = true, /* Return instructions */ [BPF_RET | BPF_K] = true, [BPF_RET | BPF_A] = true, /* Jump instructions */ [BPF_JMP | BPF_JA] = true, [BPF_JMP | BPF_JEQ | BPF_K] = true, [BPF_JMP | BPF_JEQ | BPF_X] = true, [BPF_JMP | BPF_JGE | BPF_K] = true, [BPF_JMP | BPF_JGE | BPF_X] = true, [BPF_JMP | BPF_JGT | BPF_K] = true, [BPF_JMP | BPF_JGT | BPF_X] = true, [BPF_JMP | BPF_JSET | BPF_K] = true, [BPF_JMP | BPF_JSET | BPF_X] = true, }; if (code_to_probe >= ARRAY_SIZE(codes)) return false; return codes[code_to_probe]; } static bool bpf_check_basics_ok(const struct sock_filter *filter, unsigned int flen) { if (filter == NULL) return false; if (flen == 0 || flen > BPF_MAXINSNS) return false; return true; } /** * bpf_check_classic - verify socket filter code * @filter: filter to verify * @flen: length of filter * * Check the user's filter code. If we let some ugly * filter code slip through kaboom! The filter must contain * no references or jumps that are out of range, no illegal * instructions, and must end with a RET instruction. * * All jumps are forward as they are not signed. * * Returns 0 if the rule set is legal or -EINVAL if not. */ static int bpf_check_classic(const struct sock_filter *filter, unsigned int flen) { bool anc_found; int pc; /* Check the filter code now */ for (pc = 0; pc < flen; pc++) { const struct sock_filter *ftest = &filter[pc]; /* May we actually operate on this code? */ if (!chk_code_allowed(ftest->code)) return -EINVAL; /* Some instructions need special checks */ switch (ftest->code) { case BPF_ALU | BPF_DIV | BPF_K: case BPF_ALU | BPF_MOD | BPF_K: /* Check for division by zero */ if (ftest->k == 0) return -EINVAL; break; case BPF_ALU | BPF_LSH | BPF_K: case BPF_ALU | BPF_RSH | BPF_K: if (ftest->k >= 32) return -EINVAL; break; case BPF_LD | BPF_MEM: case BPF_LDX | BPF_MEM: case BPF_ST: case BPF_STX: /* Check for invalid memory addresses */ if (ftest->k >= BPF_MEMWORDS) return -EINVAL; break; case BPF_JMP | BPF_JA: /* Note, the large ftest->k might cause loops. * Compare this with conditional jumps below, * where offsets are limited. --ANK (981016) */ if (ftest->k >= (unsigned int)(flen - pc - 1)) return -EINVAL; break; case BPF_JMP | BPF_JEQ | BPF_K: case BPF_JMP | BPF_JEQ | BPF_X: case BPF_JMP | BPF_JGE | BPF_K: case BPF_JMP | BPF_JGE | BPF_X: case BPF_JMP | BPF_JGT | BPF_K: case BPF_JMP | BPF_JGT | BPF_X: case BPF_JMP | BPF_JSET | BPF_K: case BPF_JMP | BPF_JSET | BPF_X: /* Both conditionals must be safe */ if (pc + ftest->jt + 1 >= flen || pc + ftest->jf + 1 >= flen) return -EINVAL; break; case BPF_LD | BPF_W | BPF_ABS: case BPF_LD | BPF_H | BPF_ABS: case BPF_LD | BPF_B | BPF_ABS: anc_found = false; if (bpf_anc_helper(ftest) & BPF_ANC) anc_found = true; /* Ancillary operation unknown or unsupported */ if (anc_found == false && ftest->k >= SKF_AD_OFF) return -EINVAL; } } /* Last instruction must be a RET code */ switch (filter[flen - 1].code) { case BPF_RET | BPF_K: case BPF_RET | BPF_A: return check_load_and_stores(filter, flen); } return -EINVAL; } static int bpf_prog_store_orig_filter(struct bpf_prog *fp, const struct sock_fprog *fprog) { unsigned int fsize = bpf_classic_proglen(fprog); struct sock_fprog_kern *fkprog; fp->orig_prog = kmalloc(sizeof(*fkprog), GFP_KERNEL); if (!fp->orig_prog) return -ENOMEM; fkprog = fp->orig_prog; fkprog->len = fprog->len; fkprog->filter = kmemdup(fp->insns, fsize, GFP_KERNEL | __GFP_NOWARN); if (!fkprog->filter) { kfree(fp->orig_prog); return -ENOMEM; } return 0; } static void bpf_release_orig_filter(struct bpf_prog *fp) { struct sock_fprog_kern *fprog = fp->orig_prog; if (fprog) { kfree(fprog->filter); kfree(fprog); } } static void __bpf_prog_release(struct bpf_prog *prog) { if (prog->type == BPF_PROG_TYPE_SOCKET_FILTER) { bpf_prog_put(prog); } else { bpf_release_orig_filter(prog); bpf_prog_free(prog); } } static void __sk_filter_release(struct sk_filter *fp) { __bpf_prog_release(fp->prog); kfree(fp); } /** * sk_filter_release_rcu - Release a socket filter by rcu_head * @rcu: rcu_head that contains the sk_filter to free */ static void sk_filter_release_rcu(struct rcu_head *rcu) { struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu); __sk_filter_release(fp); } /** * sk_filter_release - release a socket filter * @fp: filter to remove * * Remove a filter from a socket and release its resources. */ static void sk_filter_release(struct sk_filter *fp) { if (refcount_dec_and_test(&fp->refcnt)) call_rcu(&fp->rcu, sk_filter_release_rcu); } void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp) { u32 filter_size = bpf_prog_size(fp->prog->len); atomic_sub(filter_size, &sk->sk_omem_alloc); sk_filter_release(fp); } /* try to charge the socket memory if there is space available * return true on success */ static bool __sk_filter_charge(struct sock *sk, struct sk_filter *fp) { int optmem_max = READ_ONCE(sock_net(sk)->core.sysctl_optmem_max); u32 filter_size = bpf_prog_size(fp->prog->len); /* same check as in sock_kmalloc() */ if (filter_size <= optmem_max && atomic_read(&sk->sk_omem_alloc) + filter_size < optmem_max) { atomic_add(filter_size, &sk->sk_omem_alloc); return true; } return false; } bool sk_filter_charge(struct sock *sk, struct sk_filter *fp) { if (!refcount_inc_not_zero(&fp->refcnt)) return false; if (!__sk_filter_charge(sk, fp)) { sk_filter_release(fp); return false; } return true; } static struct bpf_prog *bpf_migrate_filter(struct bpf_prog *fp) { struct sock_filter *old_prog; struct bpf_prog *old_fp; int err, new_len, old_len = fp->len; bool seen_ld_abs = false; /* We are free to overwrite insns et al right here as it won't be used at * this point in time anymore internally after the migration to the eBPF * instruction representation. */ BUILD_BUG_ON(sizeof(struct sock_filter) != sizeof(struct bpf_insn)); /* Conversion cannot happen on overlapping memory areas, * so we need to keep the user BPF around until the 2nd * pass. At this time, the user BPF is stored in fp->insns. */ old_prog = kmemdup_array(fp->insns, old_len, sizeof(struct sock_filter), GFP_KERNEL | __GFP_NOWARN); if (!old_prog) { err = -ENOMEM; goto out_err; } /* 1st pass: calculate the new program length. */ err = bpf_convert_filter(old_prog, old_len, NULL, &new_len, &seen_ld_abs); if (err) goto out_err_free; /* Expand fp for appending the new filter representation. */ old_fp = fp; fp = bpf_prog_realloc(old_fp, bpf_prog_size(new_len), 0); if (!fp) { /* The old_fp is still around in case we couldn't * allocate new memory, so uncharge on that one. */ fp = old_fp; err = -ENOMEM; goto out_err_free; } fp->len = new_len; /* 2nd pass: remap sock_filter insns into bpf_insn insns. */ err = bpf_convert_filter(old_prog, old_len, fp, &new_len, &seen_ld_abs); if (err) /* 2nd bpf_convert_filter() can fail only if it fails * to allocate memory, remapping must succeed. Note, * that at this time old_fp has already been released * by krealloc(). */ goto out_err_free; fp = bpf_prog_select_runtime(fp, &err); if (err) goto out_err_free; kfree(old_prog); return fp; out_err_free: kfree(old_prog); out_err: __bpf_prog_release(fp); return ERR_PTR(err); } static struct bpf_prog *bpf_prepare_filter(struct bpf_prog *fp, bpf_aux_classic_check_t trans) { int err; fp->bpf_func = NULL; fp->jited = 0; err = bpf_check_classic(fp->insns, fp->len); if (err) { __bpf_prog_release(fp); return ERR_PTR(err); } /* There might be additional checks and transformations * needed on classic filters, f.e. in case of seccomp. */ if (trans) { err = trans(fp->insns, fp->len); if (err) { __bpf_prog_release(fp); return ERR_PTR(err); } } /* Probe if we can JIT compile the filter and if so, do * the compilation of the filter. */ bpf_jit_compile(fp); /* JIT compiler couldn't process this filter, so do the eBPF translation * for the optimized interpreter. */ if (!fp->jited) fp = bpf_migrate_filter(fp); return fp; } /** * bpf_prog_create - create an unattached filter * @pfp: the unattached filter that is created * @fprog: the filter program * * Create a filter independent of any socket. We first run some * sanity checks on it to make sure it does not explode on us later. * If an error occurs or there is insufficient memory for the filter * a negative errno code is returned. On success the return is zero. */ int bpf_prog_create(struct bpf_prog **pfp, struct sock_fprog_kern *fprog) { unsigned int fsize = bpf_classic_proglen(fprog); struct bpf_prog *fp; /* Make sure new filter is there and in the right amounts. */ if (!bpf_check_basics_ok(fprog->filter, fprog->len)) return -EINVAL; fp = bpf_prog_alloc(bpf_prog_size(fprog->len), 0); if (!fp) return -ENOMEM; memcpy(fp->insns, fprog->filter, fsize); fp->len = fprog->len; /* Since unattached filters are not copied back to user * space through sk_get_filter(), we do not need to hold * a copy here, and can spare us the work. */ fp->orig_prog = NULL; /* bpf_prepare_filter() already takes care of freeing * memory in case something goes wrong. */ fp = bpf_prepare_filter(fp, NULL); if (IS_ERR(fp)) return PTR_ERR(fp); *pfp = fp; return 0; } EXPORT_SYMBOL_GPL(bpf_prog_create); /** * bpf_prog_create_from_user - create an unattached filter from user buffer * @pfp: the unattached filter that is created * @fprog: the filter program * @trans: post-classic verifier transformation handler * @save_orig: save classic BPF program * * This function effectively does the same as bpf_prog_create(), only * that it builds up its insns buffer from user space provided buffer. * It also allows for passing a bpf_aux_classic_check_t handler. */ int bpf_prog_create_from_user(struct bpf_prog **pfp, struct sock_fprog *fprog, bpf_aux_classic_check_t trans, bool save_orig) { unsigned int fsize = bpf_classic_proglen(fprog); struct bpf_prog *fp; int err; /* Make sure new filter is there and in the right amounts. */ if (!bpf_check_basics_ok(fprog->filter, fprog->len)) return -EINVAL; fp = bpf_prog_alloc(bpf_prog_size(fprog->len), 0); if (!fp) return -ENOMEM; if (copy_from_user(fp->insns, fprog->filter, fsize)) { __bpf_prog_free(fp); return -EFAULT; } fp->len = fprog->len; fp->orig_prog = NULL; if (save_orig) { err = bpf_prog_store_orig_filter(fp, fprog); if (err) { __bpf_prog_free(fp); return -ENOMEM; } } /* bpf_prepare_filter() already takes care of freeing * memory in case something goes wrong. */ fp = bpf_prepare_filter(fp, trans); if (IS_ERR(fp)) return PTR_ERR(fp); *pfp = fp; return 0; } EXPORT_SYMBOL_GPL(bpf_prog_create_from_user); void bpf_prog_destroy(struct bpf_prog *fp) { __bpf_prog_release(fp); } EXPORT_SYMBOL_GPL(bpf_prog_destroy); static int __sk_attach_prog(struct bpf_prog *prog, struct sock *sk) { struct sk_filter *fp, *old_fp; fp = kmalloc(sizeof(*fp), GFP_KERNEL); if (!fp) return -ENOMEM; fp->prog = prog; if (!__sk_filter_charge(sk, fp)) { kfree(fp); return -ENOMEM; } refcount_set(&fp->refcnt, 1); old_fp = rcu_dereference_protected(sk->sk_filter, lockdep_sock_is_held(sk)); rcu_assign_pointer(sk->sk_filter, fp); if (old_fp) sk_filter_uncharge(sk, old_fp); return 0; } static struct bpf_prog *__get_filter(struct sock_fprog *fprog, struct sock *sk) { unsigned int fsize = bpf_classic_proglen(fprog); struct bpf_prog *prog; int err; if (sock_flag(sk, SOCK_FILTER_LOCKED)) return ERR_PTR(-EPERM); /* Make sure new filter is there and in the right amounts. */ if (!bpf_check_basics_ok(fprog->filter, fprog->len)) return ERR_PTR(-EINVAL); prog = bpf_prog_alloc(bpf_prog_size(fprog->len), 0); if (!prog) return ERR_PTR(-ENOMEM); if (copy_from_user(prog->insns, fprog->filter, fsize)) { __bpf_prog_free(prog); return ERR_PTR(-EFAULT); } prog->len = fprog->len; err = bpf_prog_store_orig_filter(prog, fprog); if (err) { __bpf_prog_free(prog); return ERR_PTR(-ENOMEM); } /* bpf_prepare_filter() already takes care of freeing * memory in case something goes wrong. */ return bpf_prepare_filter(prog, NULL); } /** * sk_attach_filter - attach a socket filter * @fprog: the filter program * @sk: the socket to use * * Attach the user's filter code. We first run some sanity checks on * it to make sure it does not explode on us later. If an error * occurs or there is insufficient memory for the filter a negative * errno code is returned. On success the return is zero. */ int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk) { struct bpf_prog *prog = __get_filter(fprog, sk); int err; if (IS_ERR(prog)) return PTR_ERR(prog); err = __sk_attach_prog(prog, sk); if (err < 0) { __bpf_prog_release(prog); return err; } return 0; } EXPORT_SYMBOL_GPL(sk_attach_filter); int sk_reuseport_attach_filter(struct sock_fprog *fprog, struct sock *sk) { struct bpf_prog *prog = __get_filter(fprog, sk); int err, optmem_max; if (IS_ERR(prog)) return PTR_ERR(prog); optmem_max = READ_ONCE(sock_net(sk)->core.sysctl_optmem_max); if (bpf_prog_size(prog->len) > optmem_max) err = -ENOMEM; else err = reuseport_attach_prog(sk, prog); if (err) __bpf_prog_release(prog); return err; } static struct bpf_prog *__get_bpf(u32 ufd, struct sock *sk) { if (sock_flag(sk, SOCK_FILTER_LOCKED)) return ERR_PTR(-EPERM); return bpf_prog_get_type(ufd, BPF_PROG_TYPE_SOCKET_FILTER); } int sk_attach_bpf(u32 ufd, struct sock *sk) { struct bpf_prog *prog = __get_bpf(ufd, sk); int err; if (IS_ERR(prog)) return PTR_ERR(prog); err = __sk_attach_prog(prog, sk); if (err < 0) { bpf_prog_put(prog); return err; } return 0; } int sk_reuseport_attach_bpf(u32 ufd, struct sock *sk) { struct bpf_prog *prog; int err, optmem_max; if (sock_flag(sk, SOCK_FILTER_LOCKED)) return -EPERM; prog = bpf_prog_get_type(ufd, BPF_PROG_TYPE_SOCKET_FILTER); if (PTR_ERR(prog) == -EINVAL) prog = bpf_prog_get_type(ufd, BPF_PROG_TYPE_SK_REUSEPORT); if (IS_ERR(prog)) return PTR_ERR(prog); if (prog->type == BPF_PROG_TYPE_SK_REUSEPORT) { /* Like other non BPF_PROG_TYPE_SOCKET_FILTER * bpf prog (e.g. sockmap). It depends on the * limitation imposed by bpf_prog_load(). * Hence, sysctl_optmem_max is not checked. */ if ((sk->sk_type != SOCK_STREAM && sk->sk_type != SOCK_DGRAM) || (sk->sk_protocol != IPPROTO_UDP && sk->sk_protocol != IPPROTO_TCP) || (sk->sk_family != AF_INET && sk->sk_family != AF_INET6)) { err = -ENOTSUPP; goto err_prog_put; } } else { /* BPF_PROG_TYPE_SOCKET_FILTER */ optmem_max = READ_ONCE(sock_net(sk)->core.sysctl_optmem_max); if (bpf_prog_size(prog->len) > optmem_max) { err = -ENOMEM; goto err_prog_put; } } err = reuseport_attach_prog(sk, prog); err_prog_put: if (err) bpf_prog_put(prog); return err; } void sk_reuseport_prog_free(struct bpf_prog *prog) { if (!prog) return; if (prog->type == BPF_PROG_TYPE_SK_REUSEPORT) bpf_prog_put(prog); else bpf_prog_destroy(prog); } static inline int __bpf_try_make_writable(struct sk_buff *skb, unsigned int write_len) { #ifdef CONFIG_DEBUG_NET /* Avoid a splat in pskb_may_pull_reason() */ if (write_len > INT_MAX) return -EINVAL; #endif return skb_ensure_writable(skb, write_len); } static inline int bpf_try_make_writable(struct sk_buff *skb, unsigned int write_len) { int err = __bpf_try_make_writable(skb, write_len); bpf_compute_data_pointers(skb); return err; } static int bpf_try_make_head_writable(struct sk_buff *skb) { return bpf_try_make_writable(skb, skb_headlen(skb)); } static inline void bpf_push_mac_rcsum(struct sk_buff *skb) { if (skb_at_tc_ingress(skb)) skb_postpush_rcsum(skb, skb_mac_header(skb), skb->mac_len); } static inline void bpf_pull_mac_rcsum(struct sk_buff *skb) { if (skb_at_tc_ingress(skb)) skb_postpull_rcsum(skb, skb_mac_header(skb), skb->mac_len); } BPF_CALL_5(bpf_skb_store_bytes, struct sk_buff *, skb, u32, offset, const void *, from, u32, len, u64, flags) { void *ptr; if (unlikely(flags & ~(BPF_F_RECOMPUTE_CSUM | BPF_F_INVALIDATE_HASH))) return -EINVAL; if (unlikely(offset > INT_MAX)) return -EFAULT; if (unlikely(bpf_try_make_writable(skb, offset + len))) return -EFAULT; ptr = skb->data + offset; if (flags & BPF_F_RECOMPUTE_CSUM) __skb_postpull_rcsum(skb, ptr, len, offset); memcpy(ptr, from, len); if (flags & BPF_F_RECOMPUTE_CSUM) __skb_postpush_rcsum(skb, ptr, len, offset); if (flags & BPF_F_INVALIDATE_HASH) skb_clear_hash(skb); return 0; } static const struct bpf_func_proto bpf_skb_store_bytes_proto = { .func = bpf_skb_store_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg4_type = ARG_CONST_SIZE, .arg5_type = ARG_ANYTHING, }; int __bpf_skb_store_bytes(struct sk_buff *skb, u32 offset, const void *from, u32 len, u64 flags) { return ____bpf_skb_store_bytes(skb, offset, from, len, flags); } BPF_CALL_4(bpf_skb_load_bytes, const struct sk_buff *, skb, u32, offset, void *, to, u32, len) { void *ptr; if (unlikely(offset > INT_MAX)) goto err_clear; ptr = skb_header_pointer(skb, offset, len, to); if (unlikely(!ptr)) goto err_clear; if (ptr != to) memcpy(to, ptr, len); return 0; err_clear: memset(to, 0, len); return -EFAULT; } static const struct bpf_func_proto bpf_skb_load_bytes_proto = { .func = bpf_skb_load_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, }; int __bpf_skb_load_bytes(const struct sk_buff *skb, u32 offset, void *to, u32 len) { return ____bpf_skb_load_bytes(skb, offset, to, len); } BPF_CALL_4(bpf_flow_dissector_load_bytes, const struct bpf_flow_dissector *, ctx, u32, offset, void *, to, u32, len) { void *ptr; if (unlikely(offset > 0xffff)) goto err_clear; if (unlikely(!ctx->skb)) goto err_clear; ptr = skb_header_pointer(ctx->skb, offset, len, to); if (unlikely(!ptr)) goto err_clear; if (ptr != to) memcpy(to, ptr, len); return 0; err_clear: memset(to, 0, len); return -EFAULT; } static const struct bpf_func_proto bpf_flow_dissector_load_bytes_proto = { .func = bpf_flow_dissector_load_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_skb_load_bytes_relative, const struct sk_buff *, skb, u32, offset, void *, to, u32, len, u32, start_header) { u8 *end = skb_tail_pointer(skb); u8 *start, *ptr; if (unlikely(offset > 0xffff)) goto err_clear; switch (start_header) { case BPF_HDR_START_MAC: if (unlikely(!skb_mac_header_was_set(skb))) goto err_clear; start = skb_mac_header(skb); break; case BPF_HDR_START_NET: start = skb_network_header(skb); break; default: goto err_clear; } ptr = start + offset; if (likely(ptr + len <= end)) { memcpy(to, ptr, len); return 0; } err_clear: memset(to, 0, len); return -EFAULT; } static const struct bpf_func_proto bpf_skb_load_bytes_relative_proto = { .func = bpf_skb_load_bytes_relative, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, .arg5_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_skb_pull_data, struct sk_buff *, skb, u32, len) { /* Idea is the following: should the needed direct read/write * test fail during runtime, we can pull in more data and redo * again, since implicitly, we invalidate previous checks here. * * Or, since we know how much we need to make read/writeable, * this can be done once at the program beginning for direct * access case. By this we overcome limitations of only current * headroom being accessible. */ return bpf_try_make_writable(skb, len ? : skb_headlen(skb)); } static const struct bpf_func_proto bpf_skb_pull_data_proto = { .func = bpf_skb_pull_data, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_1(bpf_sk_fullsock, struct sock *, sk) { return sk_fullsock(sk) ? (unsigned long)sk : (unsigned long)NULL; } static const struct bpf_func_proto bpf_sk_fullsock_proto = { .func = bpf_sk_fullsock, .gpl_only = false, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_SOCK_COMMON, }; static inline int sk_skb_try_make_writable(struct sk_buff *skb, unsigned int write_len) { return __bpf_try_make_writable(skb, write_len); } BPF_CALL_2(sk_skb_pull_data, struct sk_buff *, skb, u32, len) { /* Idea is the following: should the needed direct read/write * test fail during runtime, we can pull in more data and redo * again, since implicitly, we invalidate previous checks here. * * Or, since we know how much we need to make read/writeable, * this can be done once at the program beginning for direct * access case. By this we overcome limitations of only current * headroom being accessible. */ return sk_skb_try_make_writable(skb, len ? : skb_headlen(skb)); } static const struct bpf_func_proto sk_skb_pull_data_proto = { .func = sk_skb_pull_data, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_l3_csum_replace, struct sk_buff *, skb, u32, offset, u64, from, u64, to, u64, flags) { __sum16 *ptr; if (unlikely(flags & ~(BPF_F_HDR_FIELD_MASK))) return -EINVAL; if (unlikely(offset > 0xffff || offset & 1)) return -EFAULT; if (unlikely(bpf_try_make_writable(skb, offset + sizeof(*ptr)))) return -EFAULT; ptr = (__sum16 *)(skb->data + offset); switch (flags & BPF_F_HDR_FIELD_MASK) { case 0: if (unlikely(from != 0)) return -EINVAL; csum_replace_by_diff(ptr, to); break; case 2: csum_replace2(ptr, from, to); break; case 4: csum_replace4(ptr, from, to); break; default: return -EINVAL; } return 0; } static const struct bpf_func_proto bpf_l3_csum_replace_proto = { .func = bpf_l3_csum_replace, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_l4_csum_replace, struct sk_buff *, skb, u32, offset, u64, from, u64, to, u64, flags) { bool is_pseudo = flags & BPF_F_PSEUDO_HDR; bool is_mmzero = flags & BPF_F_MARK_MANGLED_0; bool do_mforce = flags & BPF_F_MARK_ENFORCE; __sum16 *ptr; if (unlikely(flags & ~(BPF_F_MARK_MANGLED_0 | BPF_F_MARK_ENFORCE | BPF_F_PSEUDO_HDR | BPF_F_HDR_FIELD_MASK))) return -EINVAL; if (unlikely(offset > 0xffff || offset & 1)) return -EFAULT; if (unlikely(bpf_try_make_writable(skb, offset + sizeof(*ptr)))) return -EFAULT; ptr = (__sum16 *)(skb->data + offset); if (is_mmzero && !do_mforce && !*ptr) return 0; switch (flags & BPF_F_HDR_FIELD_MASK) { case 0: if (unlikely(from != 0)) return -EINVAL; inet_proto_csum_replace_by_diff(ptr, skb, to, is_pseudo); break; case 2: inet_proto_csum_replace2(ptr, skb, from, to, is_pseudo); break; case 4: inet_proto_csum_replace4(ptr, skb, from, to, is_pseudo); break; default: return -EINVAL; } if (is_mmzero && !*ptr) *ptr = CSUM_MANGLED_0; return 0; } static const struct bpf_func_proto bpf_l4_csum_replace_proto = { .func = bpf_l4_csum_replace, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_csum_diff, __be32 *, from, u32, from_size, __be32 *, to, u32, to_size, __wsum, seed) { /* This is quite flexible, some examples: * * from_size == 0, to_size > 0, seed := csum --> pushing data * from_size > 0, to_size == 0, seed := csum --> pulling data * from_size > 0, to_size > 0, seed := 0 --> diffing data * * Even for diffing, from_size and to_size don't need to be equal. */ __wsum ret = seed; if (from_size && to_size) ret = csum_sub(csum_partial(to, to_size, ret), csum_partial(from, from_size, 0)); else if (to_size) ret = csum_partial(to, to_size, ret); else if (from_size) ret = ~csum_partial(from, from_size, ~ret); return csum_from32to16((__force unsigned int)ret); } static const struct bpf_func_proto bpf_csum_diff_proto = { .func = bpf_csum_diff, .gpl_only = false, .pkt_access = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_MEM | PTR_MAYBE_NULL | MEM_RDONLY, .arg2_type = ARG_CONST_SIZE_OR_ZERO, .arg3_type = ARG_PTR_TO_MEM | PTR_MAYBE_NULL | MEM_RDONLY, .arg4_type = ARG_CONST_SIZE_OR_ZERO, .arg5_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_csum_update, struct sk_buff *, skb, __wsum, csum) { /* The interface is to be used in combination with bpf_csum_diff() * for direct packet writes. csum rotation for alignment as well * as emulating csum_sub() can be done from the eBPF program. */ if (skb->ip_summed == CHECKSUM_COMPLETE) return (skb->csum = csum_add(skb->csum, csum)); return -ENOTSUPP; } static const struct bpf_func_proto bpf_csum_update_proto = { .func = bpf_csum_update, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_csum_level, struct sk_buff *, skb, u64, level) { /* The interface is to be used in combination with bpf_skb_adjust_room() * for encap/decap of packet headers when BPF_F_ADJ_ROOM_NO_CSUM_RESET * is passed as flags, for example. */ switch (level) { case BPF_CSUM_LEVEL_INC: __skb_incr_checksum_unnecessary(skb); break; case BPF_CSUM_LEVEL_DEC: __skb_decr_checksum_unnecessary(skb); break; case BPF_CSUM_LEVEL_RESET: __skb_reset_checksum_unnecessary(skb); break; case BPF_CSUM_LEVEL_QUERY: return skb->ip_summed == CHECKSUM_UNNECESSARY ? skb->csum_level : -EACCES; default: return -EINVAL; } return 0; } static const struct bpf_func_proto bpf_csum_level_proto = { .func = bpf_csum_level, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; static inline int __bpf_rx_skb(struct net_device *dev, struct sk_buff *skb) { return dev_forward_skb_nomtu(dev, skb); } static inline int __bpf_rx_skb_no_mac(struct net_device *dev, struct sk_buff *skb) { int ret = ____dev_forward_skb(dev, skb, false); if (likely(!ret)) { skb->dev = dev; ret = netif_rx(skb); } return ret; } static inline int __bpf_tx_skb(struct net_device *dev, struct sk_buff *skb) { int ret; if (dev_xmit_recursion()) { net_crit_ratelimited("bpf: recursion limit reached on datapath, buggy bpf program?\n"); kfree_skb(skb); return -ENETDOWN; } skb->dev = dev; skb_set_redirected_noclear(skb, skb_at_tc_ingress(skb)); skb_clear_tstamp(skb); dev_xmit_recursion_inc(); ret = dev_queue_xmit(skb); dev_xmit_recursion_dec(); return ret; } static int __bpf_redirect_no_mac(struct sk_buff *skb, struct net_device *dev, u32 flags) { unsigned int mlen = skb_network_offset(skb); if (unlikely(skb->len <= mlen)) { kfree_skb(skb); return -ERANGE; } if (mlen) { __skb_pull(skb, mlen); /* At ingress, the mac header has already been pulled once. * At egress, skb_pospull_rcsum has to be done in case that * the skb is originated from ingress (i.e. a forwarded skb) * to ensure that rcsum starts at net header. */ if (!skb_at_tc_ingress(skb)) skb_postpull_rcsum(skb, skb_mac_header(skb), mlen); } skb_pop_mac_header(skb); skb_reset_mac_len(skb); return flags & BPF_F_INGRESS ? __bpf_rx_skb_no_mac(dev, skb) : __bpf_tx_skb(dev, skb); } static int __bpf_redirect_common(struct sk_buff *skb, struct net_device *dev, u32 flags) { /* Verify that a link layer header is carried */ if (unlikely(skb->mac_header >= skb->network_header || skb->len == 0)) { kfree_skb(skb); return -ERANGE; } bpf_push_mac_rcsum(skb); return flags & BPF_F_INGRESS ? __bpf_rx_skb(dev, skb) : __bpf_tx_skb(dev, skb); } static int __bpf_redirect(struct sk_buff *skb, struct net_device *dev, u32 flags) { if (dev_is_mac_header_xmit(dev)) return __bpf_redirect_common(skb, dev, flags); else return __bpf_redirect_no_mac(skb, dev, flags); } #if IS_ENABLED(CONFIG_IPV6) static int bpf_out_neigh_v6(struct net *net, struct sk_buff *skb, struct net_device *dev, struct bpf_nh_params *nh) { u32 hh_len = LL_RESERVED_SPACE(dev); const struct in6_addr *nexthop; struct dst_entry *dst = NULL; struct neighbour *neigh; if (dev_xmit_recursion()) { net_crit_ratelimited("bpf: recursion limit reached on datapath, buggy bpf program?\n"); goto out_drop; } skb->dev = dev; skb_clear_tstamp(skb); if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) { skb = skb_expand_head(skb, hh_len); if (!skb) return -ENOMEM; } rcu_read_lock(); if (!nh) { dst = skb_dst(skb); nexthop = rt6_nexthop(dst_rt6_info(dst), &ipv6_hdr(skb)->daddr); } else { nexthop = &nh->ipv6_nh; } neigh = ip_neigh_gw6(dev, nexthop); if (likely(!IS_ERR(neigh))) { int ret; sock_confirm_neigh(skb, neigh); local_bh_disable(); dev_xmit_recursion_inc(); ret = neigh_output(neigh, skb, false); dev_xmit_recursion_dec(); local_bh_enable(); rcu_read_unlock(); return ret; } rcu_read_unlock(); if (dst) IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES); out_drop: kfree_skb(skb); return -ENETDOWN; } static int __bpf_redirect_neigh_v6(struct sk_buff *skb, struct net_device *dev, struct bpf_nh_params *nh) { const struct ipv6hdr *ip6h = ipv6_hdr(skb); struct net *net = dev_net(dev); int err, ret = NET_XMIT_DROP; if (!nh) { struct dst_entry *dst; struct flowi6 fl6 = { .flowi6_flags = FLOWI_FLAG_ANYSRC, .flowi6_mark = skb->mark, .flowlabel = ip6_flowinfo(ip6h), .flowi6_oif = dev->ifindex, .flowi6_proto = ip6h->nexthdr, .daddr = ip6h->daddr, .saddr = ip6h->saddr, }; dst = ipv6_stub->ipv6_dst_lookup_flow(net, NULL, &fl6, NULL); if (IS_ERR(dst)) goto out_drop; skb_dst_set(skb, dst); } else if (nh->nh_family != AF_INET6) { goto out_drop; } err = bpf_out_neigh_v6(net, skb, dev, nh); if (unlikely(net_xmit_eval(err))) DEV_STATS_INC(dev, tx_errors); else ret = NET_XMIT_SUCCESS; goto out_xmit; out_drop: DEV_STATS_INC(dev, tx_errors); kfree_skb(skb); out_xmit: return ret; } #else static int __bpf_redirect_neigh_v6(struct sk_buff *skb, struct net_device *dev, struct bpf_nh_params *nh) { kfree_skb(skb); return NET_XMIT_DROP; } #endif /* CONFIG_IPV6 */ #if IS_ENABLED(CONFIG_INET) static int bpf_out_neigh_v4(struct net *net, struct sk_buff *skb, struct net_device *dev, struct bpf_nh_params *nh) { u32 hh_len = LL_RESERVED_SPACE(dev); struct neighbour *neigh; bool is_v6gw = false; if (dev_xmit_recursion()) { net_crit_ratelimited("bpf: recursion limit reached on datapath, buggy bpf program?\n"); goto out_drop; } skb->dev = dev; skb_clear_tstamp(skb); if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) { skb = skb_expand_head(skb, hh_len); if (!skb) return -ENOMEM; } rcu_read_lock(); if (!nh) { struct rtable *rt = skb_rtable(skb); neigh = ip_neigh_for_gw(rt, skb, &is_v6gw); } else if (nh->nh_family == AF_INET6) { neigh = ip_neigh_gw6(dev, &nh->ipv6_nh); is_v6gw = true; } else if (nh->nh_family == AF_INET) { neigh = ip_neigh_gw4(dev, nh->ipv4_nh); } else { rcu_read_unlock(); goto out_drop; } if (likely(!IS_ERR(neigh))) { int ret; sock_confirm_neigh(skb, neigh); local_bh_disable(); dev_xmit_recursion_inc(); ret = neigh_output(neigh, skb, is_v6gw); dev_xmit_recursion_dec(); local_bh_enable(); rcu_read_unlock(); return ret; } rcu_read_unlock(); out_drop: kfree_skb(skb); return -ENETDOWN; } static int __bpf_redirect_neigh_v4(struct sk_buff *skb, struct net_device *dev, struct bpf_nh_params *nh) { const struct iphdr *ip4h = ip_hdr(skb); struct net *net = dev_net(dev); int err, ret = NET_XMIT_DROP; if (!nh) { struct flowi4 fl4 = { .flowi4_flags = FLOWI_FLAG_ANYSRC, .flowi4_mark = skb->mark, .flowi4_tos = inet_dscp_to_dsfield(ip4h_dscp(ip4h)), .flowi4_oif = dev->ifindex, .flowi4_proto = ip4h->protocol, .daddr = ip4h->daddr, .saddr = ip4h->saddr, }; struct rtable *rt; rt = ip_route_output_flow(net, &fl4, NULL); if (IS_ERR(rt)) goto out_drop; if (rt->rt_type != RTN_UNICAST && rt->rt_type != RTN_LOCAL) { ip_rt_put(rt); goto out_drop; } skb_dst_set(skb, &rt->dst); } err = bpf_out_neigh_v4(net, skb, dev, nh); if (unlikely(net_xmit_eval(err))) DEV_STATS_INC(dev, tx_errors); else ret = NET_XMIT_SUCCESS; goto out_xmit; out_drop: DEV_STATS_INC(dev, tx_errors); kfree_skb(skb); out_xmit: return ret; } #else static int __bpf_redirect_neigh_v4(struct sk_buff *skb, struct net_device *dev, struct bpf_nh_params *nh) { kfree_skb(skb); return NET_XMIT_DROP; } #endif /* CONFIG_INET */ static int __bpf_redirect_neigh(struct sk_buff *skb, struct net_device *dev, struct bpf_nh_params *nh) { struct ethhdr *ethh = eth_hdr(skb); if (unlikely(skb->mac_header >= skb->network_header)) goto out; bpf_push_mac_rcsum(skb); if (is_multicast_ether_addr(ethh->h_dest)) goto out; skb_pull(skb, sizeof(*ethh)); skb_unset_mac_header(skb); skb_reset_network_header(skb); if (skb->protocol == htons(ETH_P_IP)) return __bpf_redirect_neigh_v4(skb, dev, nh); else if (skb->protocol == htons(ETH_P_IPV6)) return __bpf_redirect_neigh_v6(skb, dev, nh); out: kfree_skb(skb); return -ENOTSUPP; } /* Internal, non-exposed redirect flags. */ enum { BPF_F_NEIGH = (1ULL << 16), BPF_F_PEER = (1ULL << 17), BPF_F_NEXTHOP = (1ULL << 18), #define BPF_F_REDIRECT_INTERNAL (BPF_F_NEIGH | BPF_F_PEER | BPF_F_NEXTHOP) }; BPF_CALL_3(bpf_clone_redirect, struct sk_buff *, skb, u32, ifindex, u64, flags) { struct net_device *dev; struct sk_buff *clone; int ret; BUILD_BUG_ON(BPF_F_REDIRECT_INTERNAL & BPF_F_REDIRECT_FLAGS); if (unlikely(flags & (~(BPF_F_INGRESS) | BPF_F_REDIRECT_INTERNAL))) return -EINVAL; dev = dev_get_by_index_rcu(dev_net(skb->dev), ifindex); if (unlikely(!dev)) return -EINVAL; clone = skb_clone(skb, GFP_ATOMIC); if (unlikely(!clone)) return -ENOMEM; /* For direct write, we need to keep the invariant that the skbs * we're dealing with need to be uncloned. Should uncloning fail * here, we need to free the just generated clone to unclone once * again. */ ret = bpf_try_make_head_writable(skb); if (unlikely(ret)) { kfree_skb(clone); return -ENOMEM; } return __bpf_redirect(clone, dev, flags); } static const struct bpf_func_proto bpf_clone_redirect_proto = { .func = bpf_clone_redirect, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; static struct net_device *skb_get_peer_dev(struct net_device *dev) { const struct net_device_ops *ops = dev->netdev_ops; if (likely(ops->ndo_get_peer_dev)) return INDIRECT_CALL_1(ops->ndo_get_peer_dev, netkit_peer_dev, dev); return NULL; } int skb_do_redirect(struct sk_buff *skb) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); struct net *net = dev_net(skb->dev); struct net_device *dev; u32 flags = ri->flags; dev = dev_get_by_index_rcu(net, ri->tgt_index); ri->tgt_index = 0; ri->flags = 0; if (unlikely(!dev)) goto out_drop; if (flags & BPF_F_PEER) { if (unlikely(!skb_at_tc_ingress(skb))) goto out_drop; dev = skb_get_peer_dev(dev); if (unlikely(!dev || !(dev->flags & IFF_UP) || net_eq(net, dev_net(dev)))) goto out_drop; skb->dev = dev; dev_sw_netstats_rx_add(dev, skb->len); skb_scrub_packet(skb, false); return -EAGAIN; } return flags & BPF_F_NEIGH ? __bpf_redirect_neigh(skb, dev, flags & BPF_F_NEXTHOP ? &ri->nh : NULL) : __bpf_redirect(skb, dev, flags); out_drop: kfree_skb(skb); return -EINVAL; } BPF_CALL_2(bpf_redirect, u32, ifindex, u64, flags) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); if (unlikely(flags & (~(BPF_F_INGRESS) | BPF_F_REDIRECT_INTERNAL))) return TC_ACT_SHOT; ri->flags = flags; ri->tgt_index = ifindex; return TC_ACT_REDIRECT; } static const struct bpf_func_proto bpf_redirect_proto = { .func = bpf_redirect, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_ANYTHING, .arg2_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_redirect_peer, u32, ifindex, u64, flags) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); if (unlikely(flags)) return TC_ACT_SHOT; ri->flags = BPF_F_PEER; ri->tgt_index = ifindex; return TC_ACT_REDIRECT; } static const struct bpf_func_proto bpf_redirect_peer_proto = { .func = bpf_redirect_peer, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_ANYTHING, .arg2_type = ARG_ANYTHING, }; BPF_CALL_4(bpf_redirect_neigh, u32, ifindex, struct bpf_redir_neigh *, params, int, plen, u64, flags) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); if (unlikely((plen && plen < sizeof(*params)) || flags)) return TC_ACT_SHOT; ri->flags = BPF_F_NEIGH | (plen ? BPF_F_NEXTHOP : 0); ri->tgt_index = ifindex; BUILD_BUG_ON(sizeof(struct bpf_redir_neigh) != sizeof(struct bpf_nh_params)); if (plen) memcpy(&ri->nh, params, sizeof(ri->nh)); return TC_ACT_REDIRECT; } static const struct bpf_func_proto bpf_redirect_neigh_proto = { .func = bpf_redirect_neigh, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_ANYTHING, .arg2_type = ARG_PTR_TO_MEM | PTR_MAYBE_NULL | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_msg_apply_bytes, struct sk_msg *, msg, u32, bytes) { msg->apply_bytes = bytes; return 0; } static const struct bpf_func_proto bpf_msg_apply_bytes_proto = { .func = bpf_msg_apply_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_msg_cork_bytes, struct sk_msg *, msg, u32, bytes) { msg->cork_bytes = bytes; return 0; } static void sk_msg_reset_curr(struct sk_msg *msg) { if (!msg->sg.size) { msg->sg.curr = msg->sg.start; msg->sg.copybreak = 0; } else { u32 i = msg->sg.end; sk_msg_iter_var_prev(i); msg->sg.curr = i; msg->sg.copybreak = msg->sg.data[i].length; } } static const struct bpf_func_proto bpf_msg_cork_bytes_proto = { .func = bpf_msg_cork_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_4(bpf_msg_pull_data, struct sk_msg *, msg, u32, start, u32, end, u64, flags) { u32 len = 0, offset = 0, copy = 0, poffset = 0, bytes = end - start; u32 first_sge, last_sge, i, shift, bytes_sg_total; struct scatterlist *sge; u8 *raw, *to, *from; struct page *page; if (unlikely(flags || end <= start)) return -EINVAL; /* First find the starting scatterlist element */ i = msg->sg.start; do { offset += len; len = sk_msg_elem(msg, i)->length; if (start < offset + len) break; sk_msg_iter_var_next(i); } while (i != msg->sg.end); if (unlikely(start >= offset + len)) return -EINVAL; first_sge = i; /* The start may point into the sg element so we need to also * account for the headroom. */ bytes_sg_total = start - offset + bytes; if (!test_bit(i, msg->sg.copy) && bytes_sg_total <= len) goto out; /* At this point we need to linearize multiple scatterlist * elements or a single shared page. Either way we need to * copy into a linear buffer exclusively owned by BPF. Then * place the buffer in the scatterlist and fixup the original * entries by removing the entries now in the linear buffer * and shifting the remaining entries. For now we do not try * to copy partial entries to avoid complexity of running out * of sg_entry slots. The downside is reading a single byte * will copy the entire sg entry. */ do { copy += sk_msg_elem(msg, i)->length; sk_msg_iter_var_next(i); if (bytes_sg_total <= copy) break; } while (i != msg->sg.end); last_sge = i; if (unlikely(bytes_sg_total > copy)) return -EINVAL; page = alloc_pages(__GFP_NOWARN | GFP_ATOMIC | __GFP_COMP, get_order(copy)); if (unlikely(!page)) return -ENOMEM; raw = page_address(page); i = first_sge; do { sge = sk_msg_elem(msg, i); from = sg_virt(sge); len = sge->length; to = raw + poffset; memcpy(to, from, len); poffset += len; sge->length = 0; put_page(sg_page(sge)); sk_msg_iter_var_next(i); } while (i != last_sge); sg_set_page(&msg->sg.data[first_sge], page, copy, 0); /* To repair sg ring we need to shift entries. If we only * had a single entry though we can just replace it and * be done. Otherwise walk the ring and shift the entries. */ WARN_ON_ONCE(last_sge == first_sge); shift = last_sge > first_sge ? last_sge - first_sge - 1 : NR_MSG_FRAG_IDS - first_sge + last_sge - 1; if (!shift) goto out; i = first_sge; sk_msg_iter_var_next(i); do { u32 move_from; if (i + shift >= NR_MSG_FRAG_IDS) move_from = i + shift - NR_MSG_FRAG_IDS; else move_from = i + shift; if (move_from == msg->sg.end) break; msg->sg.data[i] = msg->sg.data[move_from]; msg->sg.data[move_from].length = 0; msg->sg.data[move_from].page_link = 0; msg->sg.data[move_from].offset = 0; sk_msg_iter_var_next(i); } while (1); msg->sg.end = msg->sg.end - shift > msg->sg.end ? msg->sg.end - shift + NR_MSG_FRAG_IDS : msg->sg.end - shift; out: sk_msg_reset_curr(msg); msg->data = sg_virt(&msg->sg.data[first_sge]) + start - offset; msg->data_end = msg->data + bytes; return 0; } static const struct bpf_func_proto bpf_msg_pull_data_proto = { .func = bpf_msg_pull_data, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_ANYTHING, }; BPF_CALL_4(bpf_msg_push_data, struct sk_msg *, msg, u32, start, u32, len, u64, flags) { struct scatterlist sge, nsge, nnsge, rsge = {0}, *psge; u32 new, i = 0, l = 0, space, copy = 0, offset = 0; u8 *raw, *to, *from; struct page *page; if (unlikely(flags)) return -EINVAL; if (unlikely(len == 0)) return 0; /* First find the starting scatterlist element */ i = msg->sg.start; do { offset += l; l = sk_msg_elem(msg, i)->length; if (start < offset + l) break; sk_msg_iter_var_next(i); } while (i != msg->sg.end); if (start > offset + l) return -EINVAL; space = MAX_MSG_FRAGS - sk_msg_elem_used(msg); /* If no space available will fallback to copy, we need at * least one scatterlist elem available to push data into * when start aligns to the beginning of an element or two * when it falls inside an element. We handle the start equals * offset case because its the common case for inserting a * header. */ if (!space || (space == 1 && start != offset)) copy = msg->sg.data[i].length; page = alloc_pages(__GFP_NOWARN | GFP_ATOMIC | __GFP_COMP, get_order(copy + len)); if (unlikely(!page)) return -ENOMEM; if (copy) { int front, back; raw = page_address(page); if (i == msg->sg.end) sk_msg_iter_var_prev(i); psge = sk_msg_elem(msg, i); front = start - offset; back = psge->length - front; from = sg_virt(psge); if (front) memcpy(raw, from, front); if (back) { from += front; to = raw + front + len; memcpy(to, from, back); } put_page(sg_page(psge)); new = i; goto place_new; } if (start - offset) { if (i == msg->sg.end) sk_msg_iter_var_prev(i); psge = sk_msg_elem(msg, i); rsge = sk_msg_elem_cpy(msg, i); psge->length = start - offset; rsge.length -= psge->length; rsge.offset += start; sk_msg_iter_var_next(i); sg_unmark_end(psge); sg_unmark_end(&rsge); } /* Slot(s) to place newly allocated data */ sk_msg_iter_next(msg, end); new = i; sk_msg_iter_var_next(i); if (i == msg->sg.end) { if (!rsge.length) goto place_new; sk_msg_iter_next(msg, end); goto place_new; } /* Shift one or two slots as needed */ sge = sk_msg_elem_cpy(msg, new); sg_unmark_end(&sge); nsge = sk_msg_elem_cpy(msg, i); if (rsge.length) { sk_msg_iter_var_next(i); nnsge = sk_msg_elem_cpy(msg, i); sk_msg_iter_next(msg, end); } while (i != msg->sg.end) { msg->sg.data[i] = sge; sge = nsge; sk_msg_iter_var_next(i); if (rsge.length) { nsge = nnsge; nnsge = sk_msg_elem_cpy(msg, i); } else { nsge = sk_msg_elem_cpy(msg, i); } } place_new: /* Place newly allocated data buffer */ sk_mem_charge(msg->sk, len); msg->sg.size += len; __clear_bit(new, msg->sg.copy); sg_set_page(&msg->sg.data[new], page, len + copy, 0); if (rsge.length) { get_page(sg_page(&rsge)); sk_msg_iter_var_next(new); msg->sg.data[new] = rsge; } sk_msg_reset_curr(msg); sk_msg_compute_data_pointers(msg); return 0; } static const struct bpf_func_proto bpf_msg_push_data_proto = { .func = bpf_msg_push_data, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_ANYTHING, }; static void sk_msg_shift_left(struct sk_msg *msg, int i) { struct scatterlist *sge = sk_msg_elem(msg, i); int prev; put_page(sg_page(sge)); do { prev = i; sk_msg_iter_var_next(i); msg->sg.data[prev] = msg->sg.data[i]; } while (i != msg->sg.end); sk_msg_iter_prev(msg, end); } static void sk_msg_shift_right(struct sk_msg *msg, int i) { struct scatterlist tmp, sge; sk_msg_iter_next(msg, end); sge = sk_msg_elem_cpy(msg, i); sk_msg_iter_var_next(i); tmp = sk_msg_elem_cpy(msg, i); while (i != msg->sg.end) { msg->sg.data[i] = sge; sk_msg_iter_var_next(i); sge = tmp; tmp = sk_msg_elem_cpy(msg, i); } } BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start, u32, len, u64, flags) { u32 i = 0, l = 0, space, offset = 0; u64 last = start + len; int pop; if (unlikely(flags)) return -EINVAL; if (unlikely(len == 0)) return 0; /* First find the starting scatterlist element */ i = msg->sg.start; do { offset += l; l = sk_msg_elem(msg, i)->length; if (start < offset + l) break; sk_msg_iter_var_next(i); } while (i != msg->sg.end); /* Bounds checks: start and pop must be inside message */ if (start >= offset + l || last > msg->sg.size) return -EINVAL; space = MAX_MSG_FRAGS - sk_msg_elem_used(msg); pop = len; /* --------------| offset * -| start |-------- len -------| * * |----- a ----|-------- pop -------|----- b ----| * |______________________________________________| length * * * a: region at front of scatter element to save * b: region at back of scatter element to save when length > A + pop * pop: region to pop from element, same as input 'pop' here will be * decremented below per iteration. * * Two top-level cases to handle when start != offset, first B is non * zero and second B is zero corresponding to when a pop includes more * than one element. * * Then if B is non-zero AND there is no space allocate space and * compact A, B regions into page. If there is space shift ring to * the right free'ing the next element in ring to place B, leaving * A untouched except to reduce length. */ if (start != offset) { struct scatterlist *nsge, *sge = sk_msg_elem(msg, i); int a = start - offset; int b = sge->length - pop - a; sk_msg_iter_var_next(i); if (b > 0) { if (space) { sge->length = a; sk_msg_shift_right(msg, i); nsge = sk_msg_elem(msg, i); get_page(sg_page(sge)); sg_set_page(nsge, sg_page(sge), b, sge->offset + pop + a); } else { struct page *page, *orig; u8 *to, *from; page = alloc_pages(__GFP_NOWARN | __GFP_COMP | GFP_ATOMIC, get_order(a + b)); if (unlikely(!page)) return -ENOMEM; orig = sg_page(sge); from = sg_virt(sge); to = page_address(page); memcpy(to, from, a); memcpy(to + a, from + a + pop, b); sg_set_page(sge, page, a + b, 0); put_page(orig); } pop = 0; } else { pop -= (sge->length - a); sge->length = a; } } /* From above the current layout _must_ be as follows, * * -| offset * -| start * * |---- pop ---|---------------- b ------------| * |____________________________________________| length * * Offset and start of the current msg elem are equal because in the * previous case we handled offset != start and either consumed the * entire element and advanced to the next element OR pop == 0. * * Two cases to handle here are first pop is less than the length * leaving some remainder b above. Simply adjust the element's layout * in this case. Or pop >= length of the element so that b = 0. In this * case advance to next element decrementing pop. */ while (pop) { struct scatterlist *sge = sk_msg_elem(msg, i); if (pop < sge->length) { sge->length -= pop; sge->offset += pop; pop = 0; } else { pop -= sge->length; sk_msg_shift_left(msg, i); } } sk_mem_uncharge(msg->sk, len - pop); msg->sg.size -= (len - pop); sk_msg_reset_curr(msg); sk_msg_compute_data_pointers(msg); return 0; } static const struct bpf_func_proto bpf_msg_pop_data_proto = { .func = bpf_msg_pop_data, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_ANYTHING, }; #ifdef CONFIG_CGROUP_NET_CLASSID BPF_CALL_0(bpf_get_cgroup_classid_curr) { return __task_get_classid(current); } const struct bpf_func_proto bpf_get_cgroup_classid_curr_proto = { .func = bpf_get_cgroup_classid_curr, .gpl_only = false, .ret_type = RET_INTEGER, }; BPF_CALL_1(bpf_skb_cgroup_classid, const struct sk_buff *, skb) { struct sock *sk = skb_to_full_sk(skb); if (!sk || !sk_fullsock(sk)) return 0; return sock_cgroup_classid(&sk->sk_cgrp_data); } static const struct bpf_func_proto bpf_skb_cgroup_classid_proto = { .func = bpf_skb_cgroup_classid, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; #endif BPF_CALL_1(bpf_get_cgroup_classid, const struct sk_buff *, skb) { return task_get_classid(skb); } static const struct bpf_func_proto bpf_get_cgroup_classid_proto = { .func = bpf_get_cgroup_classid, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_1(bpf_get_route_realm, const struct sk_buff *, skb) { return dst_tclassid(skb); } static const struct bpf_func_proto bpf_get_route_realm_proto = { .func = bpf_get_route_realm, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_1(bpf_get_hash_recalc, struct sk_buff *, skb) { /* If skb_clear_hash() was called due to mangling, we can * trigger SW recalculation here. Later access to hash * can then use the inline skb->hash via context directly * instead of calling this helper again. */ return skb_get_hash(skb); } static const struct bpf_func_proto bpf_get_hash_recalc_proto = { .func = bpf_get_hash_recalc, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_1(bpf_set_hash_invalid, struct sk_buff *, skb) { /* After all direct packet write, this can be used once for * triggering a lazy recalc on next skb_get_hash() invocation. */ skb_clear_hash(skb); return 0; } static const struct bpf_func_proto bpf_set_hash_invalid_proto = { .func = bpf_set_hash_invalid, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_2(bpf_set_hash, struct sk_buff *, skb, u32, hash) { /* Set user specified hash as L4(+), so that it gets returned * on skb_get_hash() call unless BPF prog later on triggers a * skb_clear_hash(). */ __skb_set_sw_hash(skb, hash, true); return 0; } static const struct bpf_func_proto bpf_set_hash_proto = { .func = bpf_set_hash, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_3(bpf_skb_vlan_push, struct sk_buff *, skb, __be16, vlan_proto, u16, vlan_tci) { int ret; if (unlikely(vlan_proto != htons(ETH_P_8021Q) && vlan_proto != htons(ETH_P_8021AD))) vlan_proto = htons(ETH_P_8021Q); bpf_push_mac_rcsum(skb); ret = skb_vlan_push(skb, vlan_proto, vlan_tci); bpf_pull_mac_rcsum(skb); skb_reset_mac_len(skb); bpf_compute_data_pointers(skb); return ret; } static const struct bpf_func_proto bpf_skb_vlan_push_proto = { .func = bpf_skb_vlan_push, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; BPF_CALL_1(bpf_skb_vlan_pop, struct sk_buff *, skb) { int ret; bpf_push_mac_rcsum(skb); ret = skb_vlan_pop(skb); bpf_pull_mac_rcsum(skb); bpf_compute_data_pointers(skb); return ret; } static const struct bpf_func_proto bpf_skb_vlan_pop_proto = { .func = bpf_skb_vlan_pop, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; static int bpf_skb_generic_push(struct sk_buff *skb, u32 off, u32 len) { /* Caller already did skb_cow() with len as headroom, * so no need to do it here. */ skb_push(skb, len); memmove(skb->data, skb->data + len, off); memset(skb->data + off, 0, len); /* No skb_postpush_rcsum(skb, skb->data + off, len) * needed here as it does not change the skb->csum * result for checksum complete when summing over * zeroed blocks. */ return 0; } static int bpf_skb_generic_pop(struct sk_buff *skb, u32 off, u32 len) { void *old_data; /* skb_ensure_writable() is not needed here, as we're * already working on an uncloned skb. */ if (unlikely(!pskb_may_pull(skb, off + len))) return -ENOMEM; old_data = skb->data; __skb_pull(skb, len); skb_postpull_rcsum(skb, old_data + off, len); memmove(skb->data, old_data, off); return 0; } static int bpf_skb_net_hdr_push(struct sk_buff *skb, u32 off, u32 len) { bool trans_same = skb->transport_header == skb->network_header; int ret; /* There's no need for __skb_push()/__skb_pull() pair to * get to the start of the mac header as we're guaranteed * to always start from here under eBPF. */ ret = bpf_skb_generic_push(skb, off, len); if (likely(!ret)) { skb->mac_header -= len; skb->network_header -= len; if (trans_same) skb->transport_header = skb->network_header; } return ret; } static int bpf_skb_net_hdr_pop(struct sk_buff *skb, u32 off, u32 len) { bool trans_same = skb->transport_header == skb->network_header; int ret; /* Same here, __skb_push()/__skb_pull() pair not needed. */ ret = bpf_skb_generic_pop(skb, off, len); if (likely(!ret)) { skb->mac_header += len; skb->network_header += len; if (trans_same) skb->transport_header = skb->network_header; } return ret; } static int bpf_skb_proto_4_to_6(struct sk_buff *skb) { const u32 len_diff = sizeof(struct ipv6hdr) - sizeof(struct iphdr); u32 off = skb_mac_header_len(skb); int ret; ret = skb_cow(skb, len_diff); if (unlikely(ret < 0)) return ret; ret = bpf_skb_net_hdr_push(skb, off, len_diff); if (unlikely(ret < 0)) return ret; if (skb_is_gso(skb)) { struct skb_shared_info *shinfo = skb_shinfo(skb); /* SKB_GSO_TCPV4 needs to be changed into SKB_GSO_TCPV6. */ if (shinfo->gso_type & SKB_GSO_TCPV4) { shinfo->gso_type &= ~SKB_GSO_TCPV4; shinfo->gso_type |= SKB_GSO_TCPV6; } } skb->protocol = htons(ETH_P_IPV6); skb_clear_hash(skb); return 0; } static int bpf_skb_proto_6_to_4(struct sk_buff *skb) { const u32 len_diff = sizeof(struct ipv6hdr) - sizeof(struct iphdr); u32 off = skb_mac_header_len(skb); int ret; ret = skb_unclone(skb, GFP_ATOMIC); if (unlikely(ret < 0)) return ret; ret = bpf_skb_net_hdr_pop(skb, off, len_diff); if (unlikely(ret < 0)) return ret; if (skb_is_gso(skb)) { struct skb_shared_info *shinfo = skb_shinfo(skb); /* SKB_GSO_TCPV6 needs to be changed into SKB_GSO_TCPV4. */ if (shinfo->gso_type & SKB_GSO_TCPV6) { shinfo->gso_type &= ~SKB_GSO_TCPV6; shinfo->gso_type |= SKB_GSO_TCPV4; } } skb->protocol = htons(ETH_P_IP); skb_clear_hash(skb); return 0; } static int bpf_skb_proto_xlat(struct sk_buff *skb, __be16 to_proto) { __be16 from_proto = skb->protocol; if (from_proto == htons(ETH_P_IP) && to_proto == htons(ETH_P_IPV6)) return bpf_skb_proto_4_to_6(skb); if (from_proto == htons(ETH_P_IPV6) && to_proto == htons(ETH_P_IP)) return bpf_skb_proto_6_to_4(skb); return -ENOTSUPP; } BPF_CALL_3(bpf_skb_change_proto, struct sk_buff *, skb, __be16, proto, u64, flags) { int ret; if (unlikely(flags)) return -EINVAL; /* General idea is that this helper does the basic groundwork * needed for changing the protocol, and eBPF program fills the * rest through bpf_skb_store_bytes(), bpf_lX_csum_replace() * and other helpers, rather than passing a raw buffer here. * * The rationale is to keep this minimal and without a need to * deal with raw packet data. F.e. even if we would pass buffers * here, the program still needs to call the bpf_lX_csum_replace() * helpers anyway. Plus, this way we keep also separation of * concerns, since f.e. bpf_skb_store_bytes() should only take * care of stores. * * Currently, additional options and extension header space are * not supported, but flags register is reserved so we can adapt * that. For offloads, we mark packet as dodgy, so that headers * need to be verified first. */ ret = bpf_skb_proto_xlat(skb, proto); bpf_compute_data_pointers(skb); return ret; } static const struct bpf_func_proto bpf_skb_change_proto_proto = { .func = bpf_skb_change_proto, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_skb_change_type, struct sk_buff *, skb, u32, pkt_type) { /* We only allow a restricted subset to be changed for now. */ if (unlikely(!skb_pkt_type_ok(skb->pkt_type) || !skb_pkt_type_ok(pkt_type))) return -EINVAL; skb->pkt_type = pkt_type; return 0; } static const struct bpf_func_proto bpf_skb_change_type_proto = { .func = bpf_skb_change_type, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; static u32 bpf_skb_net_base_len(const struct sk_buff *skb) { switch (skb->protocol) { case htons(ETH_P_IP): return sizeof(struct iphdr); case htons(ETH_P_IPV6): return sizeof(struct ipv6hdr); default: return ~0U; } } #define BPF_F_ADJ_ROOM_ENCAP_L3_MASK (BPF_F_ADJ_ROOM_ENCAP_L3_IPV4 | \ BPF_F_ADJ_ROOM_ENCAP_L3_IPV6) #define BPF_F_ADJ_ROOM_DECAP_L3_MASK (BPF_F_ADJ_ROOM_DECAP_L3_IPV4 | \ BPF_F_ADJ_ROOM_DECAP_L3_IPV6) #define BPF_F_ADJ_ROOM_MASK (BPF_F_ADJ_ROOM_FIXED_GSO | \ BPF_F_ADJ_ROOM_ENCAP_L3_MASK | \ BPF_F_ADJ_ROOM_ENCAP_L4_GRE | \ BPF_F_ADJ_ROOM_ENCAP_L4_UDP | \ BPF_F_ADJ_ROOM_ENCAP_L2_ETH | \ BPF_F_ADJ_ROOM_ENCAP_L2( \ BPF_ADJ_ROOM_ENCAP_L2_MASK) | \ BPF_F_ADJ_ROOM_DECAP_L3_MASK) static int bpf_skb_net_grow(struct sk_buff *skb, u32 off, u32 len_diff, u64 flags) { u8 inner_mac_len = flags >> BPF_ADJ_ROOM_ENCAP_L2_SHIFT; bool encap = flags & BPF_F_ADJ_ROOM_ENCAP_L3_MASK; u16 mac_len = 0, inner_net = 0, inner_trans = 0; unsigned int gso_type = SKB_GSO_DODGY; int ret; if (skb_is_gso(skb) && !skb_is_gso_tcp(skb)) { /* udp gso_size delineates datagrams, only allow if fixed */ if (!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) || !(flags & BPF_F_ADJ_ROOM_FIXED_GSO)) return -ENOTSUPP; } ret = skb_cow_head(skb, len_diff); if (unlikely(ret < 0)) return ret; if (encap) { if (skb->protocol != htons(ETH_P_IP) && skb->protocol != htons(ETH_P_IPV6)) return -ENOTSUPP; if (flags & BPF_F_ADJ_ROOM_ENCAP_L3_IPV4 && flags & BPF_F_ADJ_ROOM_ENCAP_L3_IPV6) return -EINVAL; if (flags & BPF_F_ADJ_ROOM_ENCAP_L4_GRE && flags & BPF_F_ADJ_ROOM_ENCAP_L4_UDP) return -EINVAL; if (flags & BPF_F_ADJ_ROOM_ENCAP_L2_ETH && inner_mac_len < ETH_HLEN) return -EINVAL; if (skb->encapsulation) return -EALREADY; mac_len = skb->network_header - skb->mac_header; inner_net = skb->network_header; if (inner_mac_len > len_diff) return -EINVAL; inner_trans = skb->transport_header; } ret = bpf_skb_net_hdr_push(skb, off, len_diff); if (unlikely(ret < 0)) return ret; if (encap) { skb->inner_mac_header = inner_net - inner_mac_len; skb->inner_network_header = inner_net; skb->inner_transport_header = inner_trans; if (flags & BPF_F_ADJ_ROOM_ENCAP_L2_ETH) skb_set_inner_protocol(skb, htons(ETH_P_TEB)); else skb_set_inner_protocol(skb, skb->protocol); skb->encapsulation = 1; skb_set_network_header(skb, mac_len); if (flags & BPF_F_ADJ_ROOM_ENCAP_L4_UDP) gso_type |= SKB_GSO_UDP_TUNNEL; else if (flags & BPF_F_ADJ_ROOM_ENCAP_L4_GRE) gso_type |= SKB_GSO_GRE; else if (flags & BPF_F_ADJ_ROOM_ENCAP_L3_IPV6) gso_type |= SKB_GSO_IPXIP6; else if (flags & BPF_F_ADJ_ROOM_ENCAP_L3_IPV4) gso_type |= SKB_GSO_IPXIP4; if (flags & BPF_F_ADJ_ROOM_ENCAP_L4_GRE || flags & BPF_F_ADJ_ROOM_ENCAP_L4_UDP) { int nh_len = flags & BPF_F_ADJ_ROOM_ENCAP_L3_IPV6 ? sizeof(struct ipv6hdr) : sizeof(struct iphdr); skb_set_transport_header(skb, mac_len + nh_len); } /* Match skb->protocol to new outer l3 protocol */ if (skb->protocol == htons(ETH_P_IP) && flags & BPF_F_ADJ_ROOM_ENCAP_L3_IPV6) skb->protocol = htons(ETH_P_IPV6); else if (skb->protocol == htons(ETH_P_IPV6) && flags & BPF_F_ADJ_ROOM_ENCAP_L3_IPV4) skb->protocol = htons(ETH_P_IP); } if (skb_is_gso(skb)) { struct skb_shared_info *shinfo = skb_shinfo(skb); /* Header must be checked, and gso_segs recomputed. */ shinfo->gso_type |= gso_type; shinfo->gso_segs = 0; /* Due to header growth, MSS needs to be downgraded. * There is a BUG_ON() when segmenting the frag_list with * head_frag true, so linearize the skb after downgrading * the MSS. */ if (!(flags & BPF_F_ADJ_ROOM_FIXED_GSO)) { skb_decrease_gso_size(shinfo, len_diff); if (shinfo->frag_list) return skb_linearize(skb); } } return 0; } static int bpf_skb_net_shrink(struct sk_buff *skb, u32 off, u32 len_diff, u64 flags) { int ret; if (unlikely(flags & ~(BPF_F_ADJ_ROOM_FIXED_GSO | BPF_F_ADJ_ROOM_DECAP_L3_MASK | BPF_F_ADJ_ROOM_NO_CSUM_RESET))) return -EINVAL; if (skb_is_gso(skb) && !skb_is_gso_tcp(skb)) { /* udp gso_size delineates datagrams, only allow if fixed */ if (!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) || !(flags & BPF_F_ADJ_ROOM_FIXED_GSO)) return -ENOTSUPP; } ret = skb_unclone(skb, GFP_ATOMIC); if (unlikely(ret < 0)) return ret; ret = bpf_skb_net_hdr_pop(skb, off, len_diff); if (unlikely(ret < 0)) return ret; /* Match skb->protocol to new outer l3 protocol */ if (skb->protocol == htons(ETH_P_IP) && flags & BPF_F_ADJ_ROOM_DECAP_L3_IPV6) skb->protocol = htons(ETH_P_IPV6); else if (skb->protocol == htons(ETH_P_IPV6) && flags & BPF_F_ADJ_ROOM_DECAP_L3_IPV4) skb->protocol = htons(ETH_P_IP); if (skb_is_gso(skb)) { struct skb_shared_info *shinfo = skb_shinfo(skb); /* Due to header shrink, MSS can be upgraded. */ if (!(flags & BPF_F_ADJ_ROOM_FIXED_GSO)) skb_increase_gso_size(shinfo, len_diff); /* Header must be checked, and gso_segs recomputed. */ shinfo->gso_type |= SKB_GSO_DODGY; shinfo->gso_segs = 0; } return 0; } #define BPF_SKB_MAX_LEN SKB_MAX_ALLOC BPF_CALL_4(sk_skb_adjust_room, struct sk_buff *, skb, s32, len_diff, u32, mode, u64, flags) { u32 len_diff_abs = abs(len_diff); bool shrink = len_diff < 0; int ret = 0; if (unlikely(flags || mode)) return -EINVAL; if (unlikely(len_diff_abs > 0xfffU)) return -EFAULT; if (!shrink) { ret = skb_cow(skb, len_diff); if (unlikely(ret < 0)) return ret; __skb_push(skb, len_diff_abs); memset(skb->data, 0, len_diff_abs); } else { if (unlikely(!pskb_may_pull(skb, len_diff_abs))) return -ENOMEM; __skb_pull(skb, len_diff_abs); } if (tls_sw_has_ctx_rx(skb->sk)) { struct strp_msg *rxm = strp_msg(skb); rxm->full_len += len_diff; } return ret; } static const struct bpf_func_proto sk_skb_adjust_room_proto = { .func = sk_skb_adjust_room, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_ANYTHING, }; BPF_CALL_4(bpf_skb_adjust_room, struct sk_buff *, skb, s32, len_diff, u32, mode, u64, flags) { u32 len_cur, len_diff_abs = abs(len_diff); u32 len_min = bpf_skb_net_base_len(skb); u32 len_max = BPF_SKB_MAX_LEN; __be16 proto = skb->protocol; bool shrink = len_diff < 0; u32 off; int ret; if (unlikely(flags & ~(BPF_F_ADJ_ROOM_MASK | BPF_F_ADJ_ROOM_NO_CSUM_RESET))) return -EINVAL; if (unlikely(len_diff_abs > 0xfffU)) return -EFAULT; if (unlikely(proto != htons(ETH_P_IP) && proto != htons(ETH_P_IPV6))) return -ENOTSUPP; off = skb_mac_header_len(skb); switch (mode) { case BPF_ADJ_ROOM_NET: off += bpf_skb_net_base_len(skb); break; case BPF_ADJ_ROOM_MAC: break; default: return -ENOTSUPP; } if (flags & BPF_F_ADJ_ROOM_DECAP_L3_MASK) { if (!shrink) return -EINVAL; switch (flags & BPF_F_ADJ_ROOM_DECAP_L3_MASK) { case BPF_F_ADJ_ROOM_DECAP_L3_IPV4: len_min = sizeof(struct iphdr); break; case BPF_F_ADJ_ROOM_DECAP_L3_IPV6: len_min = sizeof(struct ipv6hdr); break; default: return -EINVAL; } } len_cur = skb->len - skb_network_offset(skb); if ((shrink && (len_diff_abs >= len_cur || len_cur - len_diff_abs < len_min)) || (!shrink && (skb->len + len_diff_abs > len_max && !skb_is_gso(skb)))) return -ENOTSUPP; ret = shrink ? bpf_skb_net_shrink(skb, off, len_diff_abs, flags) : bpf_skb_net_grow(skb, off, len_diff_abs, flags); if (!ret && !(flags & BPF_F_ADJ_ROOM_NO_CSUM_RESET)) __skb_reset_checksum_unnecessary(skb); bpf_compute_data_pointers(skb); return ret; } static const struct bpf_func_proto bpf_skb_adjust_room_proto = { .func = bpf_skb_adjust_room, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_ANYTHING, }; static u32 __bpf_skb_min_len(const struct sk_buff *skb) { int offset = skb_network_offset(skb); u32 min_len = 0; if (offset > 0) min_len = offset; if (skb_transport_header_was_set(skb)) { offset = skb_transport_offset(skb); if (offset > 0) min_len = offset; } if (skb->ip_summed == CHECKSUM_PARTIAL) { offset = skb_checksum_start_offset(skb) + skb->csum_offset + sizeof(__sum16); if (offset > 0) min_len = offset; } return min_len; } static int bpf_skb_grow_rcsum(struct sk_buff *skb, unsigned int new_len) { unsigned int old_len = skb->len; int ret; ret = __skb_grow_rcsum(skb, new_len); if (!ret) memset(skb->data + old_len, 0, new_len - old_len); return ret; } static int bpf_skb_trim_rcsum(struct sk_buff *skb, unsigned int new_len) { return __skb_trim_rcsum(skb, new_len); } static inline int __bpf_skb_change_tail(struct sk_buff *skb, u32 new_len, u64 flags) { u32 max_len = BPF_SKB_MAX_LEN; u32 min_len = __bpf_skb_min_len(skb); int ret; if (unlikely(flags || new_len > max_len || new_len < min_len)) return -EINVAL; if (skb->encapsulation) return -ENOTSUPP; /* The basic idea of this helper is that it's performing the * needed work to either grow or trim an skb, and eBPF program * rewrites the rest via helpers like bpf_skb_store_bytes(), * bpf_lX_csum_replace() and others rather than passing a raw * buffer here. This one is a slow path helper and intended * for replies with control messages. * * Like in bpf_skb_change_proto(), we want to keep this rather * minimal and without protocol specifics so that we are able * to separate concerns as in bpf_skb_store_bytes() should only * be the one responsible for writing buffers. * * It's really expected to be a slow path operation here for * control message replies, so we're implicitly linearizing, * uncloning and drop offloads from the skb by this. */ ret = __bpf_try_make_writable(skb, skb->len); if (!ret) { if (new_len > skb->len) ret = bpf_skb_grow_rcsum(skb, new_len); else if (new_len < skb->len) ret = bpf_skb_trim_rcsum(skb, new_len); if (!ret && skb_is_gso(skb)) skb_gso_reset(skb); } return ret; } BPF_CALL_3(bpf_skb_change_tail, struct sk_buff *, skb, u32, new_len, u64, flags) { int ret = __bpf_skb_change_tail(skb, new_len, flags); bpf_compute_data_pointers(skb); return ret; } static const struct bpf_func_proto bpf_skb_change_tail_proto = { .func = bpf_skb_change_tail, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; BPF_CALL_3(sk_skb_change_tail, struct sk_buff *, skb, u32, new_len, u64, flags) { return __bpf_skb_change_tail(skb, new_len, flags); } static const struct bpf_func_proto sk_skb_change_tail_proto = { .func = sk_skb_change_tail, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; static inline int __bpf_skb_change_head(struct sk_buff *skb, u32 head_room, u64 flags) { u32 max_len = BPF_SKB_MAX_LEN; u32 new_len = skb->len + head_room; int ret; if (unlikely(flags || (!skb_is_gso(skb) && new_len > max_len) || new_len < skb->len)) return -EINVAL; ret = skb_cow(skb, head_room); if (likely(!ret)) { /* Idea for this helper is that we currently only * allow to expand on mac header. This means that * skb->protocol network header, etc, stay as is. * Compared to bpf_skb_change_tail(), we're more * flexible due to not needing to linearize or * reset GSO. Intention for this helper is to be * used by an L3 skb that needs to push mac header * for redirection into L2 device. */ __skb_push(skb, head_room); memset(skb->data, 0, head_room); skb_reset_mac_header(skb); skb_reset_mac_len(skb); } return ret; } BPF_CALL_3(bpf_skb_change_head, struct sk_buff *, skb, u32, head_room, u64, flags) { int ret = __bpf_skb_change_head(skb, head_room, flags); bpf_compute_data_pointers(skb); return ret; } static const struct bpf_func_proto bpf_skb_change_head_proto = { .func = bpf_skb_change_head, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; BPF_CALL_3(sk_skb_change_head, struct sk_buff *, skb, u32, head_room, u64, flags) { return __bpf_skb_change_head(skb, head_room, flags); } static const struct bpf_func_proto sk_skb_change_head_proto = { .func = sk_skb_change_head, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; BPF_CALL_1(bpf_xdp_get_buff_len, struct xdp_buff*, xdp) { return xdp_get_buff_len(xdp); } static const struct bpf_func_proto bpf_xdp_get_buff_len_proto = { .func = bpf_xdp_get_buff_len, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BTF_ID_LIST_SINGLE(bpf_xdp_get_buff_len_bpf_ids, struct, xdp_buff) const struct bpf_func_proto bpf_xdp_get_buff_len_trace_proto = { .func = bpf_xdp_get_buff_len, .gpl_only = false, .arg1_type = ARG_PTR_TO_BTF_ID, .arg1_btf_id = &bpf_xdp_get_buff_len_bpf_ids[0], }; static unsigned long xdp_get_metalen(const struct xdp_buff *xdp) { return xdp_data_meta_unsupported(xdp) ? 0 : xdp->data - xdp->data_meta; } BPF_CALL_2(bpf_xdp_adjust_head, struct xdp_buff *, xdp, int, offset) { void *xdp_frame_end = xdp->data_hard_start + sizeof(struct xdp_frame); unsigned long metalen = xdp_get_metalen(xdp); void *data_start = xdp_frame_end + metalen; void *data = xdp->data + offset; if (unlikely(data < data_start || data > xdp->data_end - ETH_HLEN)) return -EINVAL; if (metalen) memmove(xdp->data_meta + offset, xdp->data_meta, metalen); xdp->data_meta += offset; xdp->data = data; return 0; } static const struct bpf_func_proto bpf_xdp_adjust_head_proto = { .func = bpf_xdp_adjust_head, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; void bpf_xdp_copy_buf(struct xdp_buff *xdp, unsigned long off, void *buf, unsigned long len, bool flush) { unsigned long ptr_len, ptr_off = 0; skb_frag_t *next_frag, *end_frag; struct skb_shared_info *sinfo; void *src, *dst; u8 *ptr_buf; if (likely(xdp->data_end - xdp->data >= off + len)) { src = flush ? buf : xdp->data + off; dst = flush ? xdp->data + off : buf; memcpy(dst, src, len); return; } sinfo = xdp_get_shared_info_from_buff(xdp); end_frag = &sinfo->frags[sinfo->nr_frags]; next_frag = &sinfo->frags[0]; ptr_len = xdp->data_end - xdp->data; ptr_buf = xdp->data; while (true) { if (off < ptr_off + ptr_len) { unsigned long copy_off = off - ptr_off; unsigned long copy_len = min(len, ptr_len - copy_off); src = flush ? buf : ptr_buf + copy_off; dst = flush ? ptr_buf + copy_off : buf; memcpy(dst, src, copy_len); off += copy_len; len -= copy_len; buf += copy_len; } if (!len || next_frag == end_frag) break; ptr_off += ptr_len; ptr_buf = skb_frag_address(next_frag); ptr_len = skb_frag_size(next_frag); next_frag++; } } void *bpf_xdp_pointer(struct xdp_buff *xdp, u32 offset, u32 len) { u32 size = xdp->data_end - xdp->data; struct skb_shared_info *sinfo; void *addr = xdp->data; int i; if (unlikely(offset > 0xffff || len > 0xffff)) return ERR_PTR(-EFAULT); if (unlikely(offset + len > xdp_get_buff_len(xdp))) return ERR_PTR(-EINVAL); if (likely(offset < size)) /* linear area */ goto out; sinfo = xdp_get_shared_info_from_buff(xdp); offset -= size; for (i = 0; i < sinfo->nr_frags; i++) { /* paged area */ u32 frag_size = skb_frag_size(&sinfo->frags[i]); if (offset < frag_size) { addr = skb_frag_address(&sinfo->frags[i]); size = frag_size; break; } offset -= frag_size; } out: return offset + len <= size ? addr + offset : NULL; } BPF_CALL_4(bpf_xdp_load_bytes, struct xdp_buff *, xdp, u32, offset, void *, buf, u32, len) { void *ptr; ptr = bpf_xdp_pointer(xdp, offset, len); if (IS_ERR(ptr)) return PTR_ERR(ptr); if (!ptr) bpf_xdp_copy_buf(xdp, offset, buf, len, false); else memcpy(buf, ptr, len); return 0; } static const struct bpf_func_proto bpf_xdp_load_bytes_proto = { .func = bpf_xdp_load_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, }; int __bpf_xdp_load_bytes(struct xdp_buff *xdp, u32 offset, void *buf, u32 len) { return ____bpf_xdp_load_bytes(xdp, offset, buf, len); } BPF_CALL_4(bpf_xdp_store_bytes, struct xdp_buff *, xdp, u32, offset, void *, buf, u32, len) { void *ptr; ptr = bpf_xdp_pointer(xdp, offset, len); if (IS_ERR(ptr)) return PTR_ERR(ptr); if (!ptr) bpf_xdp_copy_buf(xdp, offset, buf, len, true); else memcpy(ptr, buf, len); return 0; } static const struct bpf_func_proto bpf_xdp_store_bytes_proto = { .func = bpf_xdp_store_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, }; int __bpf_xdp_store_bytes(struct xdp_buff *xdp, u32 offset, void *buf, u32 len) { return ____bpf_xdp_store_bytes(xdp, offset, buf, len); } static int bpf_xdp_frags_increase_tail(struct xdp_buff *xdp, int offset) { struct skb_shared_info *sinfo = xdp_get_shared_info_from_buff(xdp); skb_frag_t *frag = &sinfo->frags[sinfo->nr_frags - 1]; struct xdp_rxq_info *rxq = xdp->rxq; unsigned int tailroom; if (!rxq->frag_size || rxq->frag_size > xdp->frame_sz) return -EOPNOTSUPP; tailroom = rxq->frag_size - skb_frag_size(frag) - skb_frag_off(frag); if (unlikely(offset > tailroom)) return -EINVAL; memset(skb_frag_address(frag) + skb_frag_size(frag), 0, offset); skb_frag_size_add(frag, offset); sinfo->xdp_frags_size += offset; if (rxq->mem.type == MEM_TYPE_XSK_BUFF_POOL) xsk_buff_get_tail(xdp)->data_end += offset; return 0; } static void bpf_xdp_shrink_data_zc(struct xdp_buff *xdp, int shrink, enum xdp_mem_type mem_type, bool release) { struct xdp_buff *zc_frag = xsk_buff_get_tail(xdp); if (release) { xsk_buff_del_tail(zc_frag); __xdp_return(0, mem_type, false, zc_frag); } else { zc_frag->data_end -= shrink; } } static bool bpf_xdp_shrink_data(struct xdp_buff *xdp, skb_frag_t *frag, int shrink) { enum xdp_mem_type mem_type = xdp->rxq->mem.type; bool release = skb_frag_size(frag) == shrink; if (mem_type == MEM_TYPE_XSK_BUFF_POOL) { bpf_xdp_shrink_data_zc(xdp, shrink, mem_type, release); goto out; } if (release) __xdp_return(skb_frag_netmem(frag), mem_type, false, NULL); out: return release; } static int bpf_xdp_frags_shrink_tail(struct xdp_buff *xdp, int offset) { struct skb_shared_info *sinfo = xdp_get_shared_info_from_buff(xdp); int i, n_frags_free = 0, len_free = 0; if (unlikely(offset > (int)xdp_get_buff_len(xdp) - ETH_HLEN)) return -EINVAL; for (i = sinfo->nr_frags - 1; i >= 0 && offset > 0; i--) { skb_frag_t *frag = &sinfo->frags[i]; int shrink = min_t(int, offset, skb_frag_size(frag)); len_free += shrink; offset -= shrink; if (bpf_xdp_shrink_data(xdp, frag, shrink)) { n_frags_free++; } else { skb_frag_size_sub(frag, shrink); break; } } sinfo->nr_frags -= n_frags_free; sinfo->xdp_frags_size -= len_free; if (unlikely(!sinfo->nr_frags)) { xdp_buff_clear_frags_flag(xdp); xdp->data_end -= offset; } return 0; } BPF_CALL_2(bpf_xdp_adjust_tail, struct xdp_buff *, xdp, int, offset) { void *data_hard_end = xdp_data_hard_end(xdp); /* use xdp->frame_sz */ void *data_end = xdp->data_end + offset; if (unlikely(xdp_buff_has_frags(xdp))) { /* non-linear xdp buff */ if (offset < 0) return bpf_xdp_frags_shrink_tail(xdp, -offset); return bpf_xdp_frags_increase_tail(xdp, offset); } /* Notice that xdp_data_hard_end have reserved some tailroom */ if (unlikely(data_end > data_hard_end)) return -EINVAL; if (unlikely(data_end < xdp->data + ETH_HLEN)) return -EINVAL; /* Clear memory area on grow, can contain uninit kernel memory */ if (offset > 0) memset(xdp->data_end, 0, offset); xdp->data_end = data_end; return 0; } static const struct bpf_func_proto bpf_xdp_adjust_tail_proto = { .func = bpf_xdp_adjust_tail, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_2(bpf_xdp_adjust_meta, struct xdp_buff *, xdp, int, offset) { void *xdp_frame_end = xdp->data_hard_start + sizeof(struct xdp_frame); void *meta = xdp->data_meta + offset; unsigned long metalen = xdp->data - meta; if (xdp_data_meta_unsupported(xdp)) return -ENOTSUPP; if (unlikely(meta < xdp_frame_end || meta > xdp->data)) return -EINVAL; if (unlikely(xdp_metalen_invalid(metalen))) return -EACCES; xdp->data_meta = meta; return 0; } static const struct bpf_func_proto bpf_xdp_adjust_meta_proto = { .func = bpf_xdp_adjust_meta, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; /** * DOC: xdp redirect * * XDP_REDIRECT works by a three-step process, implemented in the functions * below: * * 1. The bpf_redirect() and bpf_redirect_map() helpers will lookup the target * of the redirect and store it (along with some other metadata) in a per-CPU * struct bpf_redirect_info. * * 2. When the program returns the XDP_REDIRECT return code, the driver will * call xdp_do_redirect() which will use the information in struct * bpf_redirect_info to actually enqueue the frame into a map type-specific * bulk queue structure. * * 3. Before exiting its NAPI poll loop, the driver will call * xdp_do_flush(), which will flush all the different bulk queues, * thus completing the redirect. Note that xdp_do_flush() must be * called before napi_complete_done() in the driver, as the * XDP_REDIRECT logic relies on being inside a single NAPI instance * through to the xdp_do_flush() call for RCU protection of all * in-kernel data structures. */ /* * Pointers to the map entries will be kept around for this whole sequence of * steps, protected by RCU. However, there is no top-level rcu_read_lock() in * the core code; instead, the RCU protection relies on everything happening * inside a single NAPI poll sequence, which means it's between a pair of calls * to local_bh_disable()/local_bh_enable(). * * The map entries are marked as __rcu and the map code makes sure to * dereference those pointers with rcu_dereference_check() in a way that works * for both sections that to hold an rcu_read_lock() and sections that are * called from NAPI without a separate rcu_read_lock(). The code below does not * use RCU annotations, but relies on those in the map code. */ void xdp_do_flush(void) { struct list_head *lh_map, *lh_dev, *lh_xsk; bpf_net_ctx_get_all_used_flush_lists(&lh_map, &lh_dev, &lh_xsk); if (lh_dev) __dev_flush(lh_dev); if (lh_map) __cpu_map_flush(lh_map); if (lh_xsk) __xsk_map_flush(lh_xsk); } EXPORT_SYMBOL_GPL(xdp_do_flush); #if defined(CONFIG_DEBUG_NET) && defined(CONFIG_BPF_SYSCALL) void xdp_do_check_flushed(struct napi_struct *napi) { struct list_head *lh_map, *lh_dev, *lh_xsk; bool missed = false; bpf_net_ctx_get_all_used_flush_lists(&lh_map, &lh_dev, &lh_xsk); if (lh_dev) { __dev_flush(lh_dev); missed = true; } if (lh_map) { __cpu_map_flush(lh_map); missed = true; } if (lh_xsk) { __xsk_map_flush(lh_xsk); missed = true; } WARN_ONCE(missed, "Missing xdp_do_flush() invocation after NAPI by %ps\n", napi->poll); } #endif DEFINE_STATIC_KEY_FALSE(bpf_master_redirect_enabled_key); EXPORT_SYMBOL_GPL(bpf_master_redirect_enabled_key); u32 xdp_master_redirect(struct xdp_buff *xdp) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); struct net_device *master, *slave; master = netdev_master_upper_dev_get_rcu(xdp->rxq->dev); slave = master->netdev_ops->ndo_xdp_get_xmit_slave(master, xdp); if (slave && slave != xdp->rxq->dev) { /* The target device is different from the receiving device, so * redirect it to the new device. * Using XDP_REDIRECT gets the correct behaviour from XDP enabled * drivers to unmap the packet from their rx ring. */ ri->tgt_index = slave->ifindex; ri->map_id = INT_MAX; ri->map_type = BPF_MAP_TYPE_UNSPEC; return XDP_REDIRECT; } return XDP_TX; } EXPORT_SYMBOL_GPL(xdp_master_redirect); static inline int __xdp_do_redirect_xsk(struct bpf_redirect_info *ri, const struct net_device *dev, struct xdp_buff *xdp, const struct bpf_prog *xdp_prog) { enum bpf_map_type map_type = ri->map_type; void *fwd = ri->tgt_value; u32 map_id = ri->map_id; int err; ri->map_id = 0; /* Valid map id idr range: [1,INT_MAX[ */ ri->map_type = BPF_MAP_TYPE_UNSPEC; err = __xsk_map_redirect(fwd, xdp); if (unlikely(err)) goto err; _trace_xdp_redirect_map(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index); return 0; err: _trace_xdp_redirect_map_err(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index, err); return err; } static __always_inline int __xdp_do_redirect_frame(struct bpf_redirect_info *ri, struct net_device *dev, struct xdp_frame *xdpf, const struct bpf_prog *xdp_prog) { enum bpf_map_type map_type = ri->map_type; void *fwd = ri->tgt_value; u32 map_id = ri->map_id; u32 flags = ri->flags; struct bpf_map *map; int err; ri->map_id = 0; /* Valid map id idr range: [1,INT_MAX[ */ ri->flags = 0; ri->map_type = BPF_MAP_TYPE_UNSPEC; if (unlikely(!xdpf)) { err = -EOVERFLOW; goto err; } switch (map_type) { case BPF_MAP_TYPE_DEVMAP: fallthrough; case BPF_MAP_TYPE_DEVMAP_HASH: if (unlikely(flags & BPF_F_BROADCAST)) { map = READ_ONCE(ri->map); /* The map pointer is cleared when the map is being torn * down by dev_map_free() */ if (unlikely(!map)) { err = -ENOENT; break; } WRITE_ONCE(ri->map, NULL); err = dev_map_enqueue_multi(xdpf, dev, map, flags & BPF_F_EXCLUDE_INGRESS); } else { err = dev_map_enqueue(fwd, xdpf, dev); } break; case BPF_MAP_TYPE_CPUMAP: err = cpu_map_enqueue(fwd, xdpf, dev); break; case BPF_MAP_TYPE_UNSPEC: if (map_id == INT_MAX) { fwd = dev_get_by_index_rcu(dev_net(dev), ri->tgt_index); if (unlikely(!fwd)) { err = -EINVAL; break; } err = dev_xdp_enqueue(fwd, xdpf, dev); break; } fallthrough; default: err = -EBADRQC; } if (unlikely(err)) goto err; _trace_xdp_redirect_map(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index); return 0; err: _trace_xdp_redirect_map_err(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index, err); return err; } int xdp_do_redirect(struct net_device *dev, struct xdp_buff *xdp, const struct bpf_prog *xdp_prog) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); enum bpf_map_type map_type = ri->map_type; if (map_type == BPF_MAP_TYPE_XSKMAP) return __xdp_do_redirect_xsk(ri, dev, xdp, xdp_prog); return __xdp_do_redirect_frame(ri, dev, xdp_convert_buff_to_frame(xdp), xdp_prog); } EXPORT_SYMBOL_GPL(xdp_do_redirect); int xdp_do_redirect_frame(struct net_device *dev, struct xdp_buff *xdp, struct xdp_frame *xdpf, const struct bpf_prog *xdp_prog) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); enum bpf_map_type map_type = ri->map_type; if (map_type == BPF_MAP_TYPE_XSKMAP) return __xdp_do_redirect_xsk(ri, dev, xdp, xdp_prog); return __xdp_do_redirect_frame(ri, dev, xdpf, xdp_prog); } EXPORT_SYMBOL_GPL(xdp_do_redirect_frame); static int xdp_do_generic_redirect_map(struct net_device *dev, struct sk_buff *skb, struct xdp_buff *xdp, const struct bpf_prog *xdp_prog, void *fwd, enum bpf_map_type map_type, u32 map_id, u32 flags) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); struct bpf_map *map; int err; switch (map_type) { case BPF_MAP_TYPE_DEVMAP: fallthrough; case BPF_MAP_TYPE_DEVMAP_HASH: if (unlikely(flags & BPF_F_BROADCAST)) { map = READ_ONCE(ri->map); /* The map pointer is cleared when the map is being torn * down by dev_map_free() */ if (unlikely(!map)) { err = -ENOENT; break; } WRITE_ONCE(ri->map, NULL); err = dev_map_redirect_multi(dev, skb, xdp_prog, map, flags & BPF_F_EXCLUDE_INGRESS); } else { err = dev_map_generic_redirect(fwd, skb, xdp_prog); } if (unlikely(err)) goto err; break; case BPF_MAP_TYPE_XSKMAP: err = xsk_generic_rcv(fwd, xdp); if (err) goto err; consume_skb(skb); break; case BPF_MAP_TYPE_CPUMAP: err = cpu_map_generic_redirect(fwd, skb); if (unlikely(err)) goto err; break; default: err = -EBADRQC; goto err; } _trace_xdp_redirect_map(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index); return 0; err: _trace_xdp_redirect_map_err(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index, err); return err; } int xdp_do_generic_redirect(struct net_device *dev, struct sk_buff *skb, struct xdp_buff *xdp, const struct bpf_prog *xdp_prog) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); enum bpf_map_type map_type = ri->map_type; void *fwd = ri->tgt_value; u32 map_id = ri->map_id; u32 flags = ri->flags; int err; ri->map_id = 0; /* Valid map id idr range: [1,INT_MAX[ */ ri->flags = 0; ri->map_type = BPF_MAP_TYPE_UNSPEC; if (map_type == BPF_MAP_TYPE_UNSPEC && map_id == INT_MAX) { fwd = dev_get_by_index_rcu(dev_net(dev), ri->tgt_index); if (unlikely(!fwd)) { err = -EINVAL; goto err; } err = xdp_ok_fwd_dev(fwd, skb->len); if (unlikely(err)) goto err; skb->dev = fwd; _trace_xdp_redirect(dev, xdp_prog, ri->tgt_index); generic_xdp_tx(skb, xdp_prog); return 0; } return xdp_do_generic_redirect_map(dev, skb, xdp, xdp_prog, fwd, map_type, map_id, flags); err: _trace_xdp_redirect_err(dev, xdp_prog, ri->tgt_index, err); return err; } BPF_CALL_2(bpf_xdp_redirect, u32, ifindex, u64, flags) { struct bpf_redirect_info *ri = bpf_net_ctx_get_ri(); if (unlikely(flags)) return XDP_ABORTED; /* NB! Map type UNSPEC and map_id == INT_MAX (never generated * by map_idr) is used for ifindex based XDP redirect. */ ri->tgt_index = ifindex; ri->map_id = INT_MAX; ri->map_type = BPF_MAP_TYPE_UNSPEC; return XDP_REDIRECT; } static const struct bpf_func_proto bpf_xdp_redirect_proto = { .func = bpf_xdp_redirect, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_ANYTHING, .arg2_type = ARG_ANYTHING, }; BPF_CALL_3(bpf_xdp_redirect_map, struct bpf_map *, map, u64, key, u64, flags) { return map->ops->map_redirect(map, key, flags); } static const struct bpf_func_proto bpf_xdp_redirect_map_proto = { .func = bpf_xdp_redirect_map, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_CONST_MAP_PTR, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; static unsigned long bpf_skb_copy(void *dst_buff, const void *skb, unsigned long off, unsigned long len) { void *ptr = skb_header_pointer(skb, off, len, dst_buff); if (unlikely(!ptr)) return len; if (ptr != dst_buff) memcpy(dst_buff, ptr, len); return 0; } BPF_CALL_5(bpf_skb_event_output, struct sk_buff *, skb, struct bpf_map *, map, u64, flags, void *, meta, u64, meta_size) { u64 skb_size = (flags & BPF_F_CTXLEN_MASK) >> 32; if (unlikely(flags & ~(BPF_F_CTXLEN_MASK | BPF_F_INDEX_MASK))) return -EINVAL; if (unlikely(!skb || skb_size > skb->len)) return -EFAULT; return bpf_event_output(map, flags, meta, meta_size, skb, skb_size, bpf_skb_copy); } static const struct bpf_func_proto bpf_skb_event_output_proto = { .func = bpf_skb_event_output, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE_OR_ZERO, }; BTF_ID_LIST_SINGLE(bpf_skb_output_btf_ids, struct, sk_buff) const struct bpf_func_proto bpf_skb_output_proto = { .func = bpf_skb_event_output, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID, .arg1_btf_id = &bpf_skb_output_btf_ids[0], .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE_OR_ZERO, }; static unsigned short bpf_tunnel_key_af(u64 flags) { return flags & BPF_F_TUNINFO_IPV6 ? AF_INET6 : AF_INET; } BPF_CALL_4(bpf_skb_get_tunnel_key, struct sk_buff *, skb, struct bpf_tunnel_key *, to, u32, size, u64, flags) { const struct ip_tunnel_info *info = skb_tunnel_info(skb); u8 compat[sizeof(struct bpf_tunnel_key)]; void *to_orig = to; int err; if (unlikely(!info || (flags & ~(BPF_F_TUNINFO_IPV6 | BPF_F_TUNINFO_FLAGS)))) { err = -EINVAL; goto err_clear; } if (ip_tunnel_info_af(info) != bpf_tunnel_key_af(flags)) { err = -EPROTO; goto err_clear; } if (unlikely(size != sizeof(struct bpf_tunnel_key))) { err = -EINVAL; switch (size) { case offsetof(struct bpf_tunnel_key, local_ipv6[0]): case offsetof(struct bpf_tunnel_key, tunnel_label): case offsetof(struct bpf_tunnel_key, tunnel_ext): goto set_compat; case offsetof(struct bpf_tunnel_key, remote_ipv6[1]): /* Fixup deprecated structure layouts here, so we have * a common path later on. */ if (ip_tunnel_info_af(info) != AF_INET) goto err_clear; set_compat: to = (struct bpf_tunnel_key *)compat; break; default: goto err_clear; } } to->tunnel_id = be64_to_cpu(info->key.tun_id); to->tunnel_tos = info->key.tos; to->tunnel_ttl = info->key.ttl; if (flags & BPF_F_TUNINFO_FLAGS) to->tunnel_flags = ip_tunnel_flags_to_be16(info->key.tun_flags); else to->tunnel_ext = 0; if (flags & BPF_F_TUNINFO_IPV6) { memcpy(to->remote_ipv6, &info->key.u.ipv6.src, sizeof(to->remote_ipv6)); memcpy(to->local_ipv6, &info->key.u.ipv6.dst, sizeof(to->local_ipv6)); to->tunnel_label = be32_to_cpu(info->key.label); } else { to->remote_ipv4 = be32_to_cpu(info->key.u.ipv4.src); memset(&to->remote_ipv6[1], 0, sizeof(__u32) * 3); to->local_ipv4 = be32_to_cpu(info->key.u.ipv4.dst); memset(&to->local_ipv6[1], 0, sizeof(__u32) * 3); to->tunnel_label = 0; } if (unlikely(size != sizeof(struct bpf_tunnel_key))) memcpy(to_orig, to, size); return 0; err_clear: memset(to_orig, 0, size); return err; } static const struct bpf_func_proto bpf_skb_get_tunnel_key_proto = { .func = bpf_skb_get_tunnel_key, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_UNINIT_MEM, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_ANYTHING, }; BPF_CALL_3(bpf_skb_get_tunnel_opt, struct sk_buff *, skb, u8 *, to, u32, size) { const struct ip_tunnel_info *info = skb_tunnel_info(skb); int err; if (unlikely(!info || !ip_tunnel_is_options_present(info->key.tun_flags))) { err = -ENOENT; goto err_clear; } if (unlikely(size < info->options_len)) { err = -ENOMEM; goto err_clear; } ip_tunnel_info_opts_get(to, info); if (size > info->options_len) memset(to + info->options_len, 0, size - info->options_len); return info->options_len; err_clear: memset(to, 0, size); return err; } static const struct bpf_func_proto bpf_skb_get_tunnel_opt_proto = { .func = bpf_skb_get_tunnel_opt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_UNINIT_MEM, .arg3_type = ARG_CONST_SIZE, }; static struct metadata_dst __percpu *md_dst; BPF_CALL_4(bpf_skb_set_tunnel_key, struct sk_buff *, skb, const struct bpf_tunnel_key *, from, u32, size, u64, flags) { struct metadata_dst *md = this_cpu_ptr(md_dst); u8 compat[sizeof(struct bpf_tunnel_key)]; struct ip_tunnel_info *info; if (unlikely(flags & ~(BPF_F_TUNINFO_IPV6 | BPF_F_ZERO_CSUM_TX | BPF_F_DONT_FRAGMENT | BPF_F_SEQ_NUMBER | BPF_F_NO_TUNNEL_KEY))) return -EINVAL; if (unlikely(size != sizeof(struct bpf_tunnel_key))) { switch (size) { case offsetof(struct bpf_tunnel_key, local_ipv6[0]): case offsetof(struct bpf_tunnel_key, tunnel_label): case offsetof(struct bpf_tunnel_key, tunnel_ext): case offsetof(struct bpf_tunnel_key, remote_ipv6[1]): /* Fixup deprecated structure layouts here, so we have * a common path later on. */ memcpy(compat, from, size); memset(compat + size, 0, sizeof(compat) - size); from = (const struct bpf_tunnel_key *) compat; break; default: return -EINVAL; } } if (unlikely((!(flags & BPF_F_TUNINFO_IPV6) && from->tunnel_label) || from->tunnel_ext)) return -EINVAL; skb_dst_drop(skb); dst_hold((struct dst_entry *) md); skb_dst_set(skb, (struct dst_entry *) md); info = &md->u.tun_info; memset(info, 0, sizeof(*info)); info->mode = IP_TUNNEL_INFO_TX; __set_bit(IP_TUNNEL_NOCACHE_BIT, info->key.tun_flags); __assign_bit(IP_TUNNEL_DONT_FRAGMENT_BIT, info->key.tun_flags, flags & BPF_F_DONT_FRAGMENT); __assign_bit(IP_TUNNEL_CSUM_BIT, info->key.tun_flags, !(flags & BPF_F_ZERO_CSUM_TX)); __assign_bit(IP_TUNNEL_SEQ_BIT, info->key.tun_flags, flags & BPF_F_SEQ_NUMBER); __assign_bit(IP_TUNNEL_KEY_BIT, info->key.tun_flags, !(flags & BPF_F_NO_TUNNEL_KEY)); info->key.tun_id = cpu_to_be64(from->tunnel_id); info->key.tos = from->tunnel_tos; info->key.ttl = from->tunnel_ttl; if (flags & BPF_F_TUNINFO_IPV6) { info->mode |= IP_TUNNEL_INFO_IPV6; memcpy(&info->key.u.ipv6.dst, from->remote_ipv6, sizeof(from->remote_ipv6)); memcpy(&info->key.u.ipv6.src, from->local_ipv6, sizeof(from->local_ipv6)); info->key.label = cpu_to_be32(from->tunnel_label) & IPV6_FLOWLABEL_MASK; } else { info->key.u.ipv4.dst = cpu_to_be32(from->remote_ipv4); info->key.u.ipv4.src = cpu_to_be32(from->local_ipv4); info->key.flow_flags = FLOWI_FLAG_ANYSRC; } return 0; } static const struct bpf_func_proto bpf_skb_set_tunnel_key_proto = { .func = bpf_skb_set_tunnel_key, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_ANYTHING, }; BPF_CALL_3(bpf_skb_set_tunnel_opt, struct sk_buff *, skb, const u8 *, from, u32, size) { struct ip_tunnel_info *info = skb_tunnel_info(skb); const struct metadata_dst *md = this_cpu_ptr(md_dst); IP_TUNNEL_DECLARE_FLAGS(present) = { }; if (unlikely(info != &md->u.tun_info || (size & (sizeof(u32) - 1)))) return -EINVAL; if (unlikely(size > IP_TUNNEL_OPTS_MAX)) return -ENOMEM; ip_tunnel_set_options_present(present); ip_tunnel_info_opts_set(info, from, size, present); return 0; } static const struct bpf_func_proto bpf_skb_set_tunnel_opt_proto = { .func = bpf_skb_set_tunnel_opt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE, }; static const struct bpf_func_proto * bpf_get_skb_set_tunnel_proto(enum bpf_func_id which) { if (!md_dst) { struct metadata_dst __percpu *tmp; tmp = metadata_dst_alloc_percpu(IP_TUNNEL_OPTS_MAX, METADATA_IP_TUNNEL, GFP_KERNEL); if (!tmp) return NULL; if (cmpxchg(&md_dst, NULL, tmp)) metadata_dst_free_percpu(tmp); } switch (which) { case BPF_FUNC_skb_set_tunnel_key: return &bpf_skb_set_tunnel_key_proto; case BPF_FUNC_skb_set_tunnel_opt: return &bpf_skb_set_tunnel_opt_proto; default: return NULL; } } BPF_CALL_3(bpf_skb_under_cgroup, struct sk_buff *, skb, struct bpf_map *, map, u32, idx) { struct bpf_array *array = container_of(map, struct bpf_array, map); struct cgroup *cgrp; struct sock *sk; sk = skb_to_full_sk(skb); if (!sk || !sk_fullsock(sk)) return -ENOENT; if (unlikely(idx >= array->map.max_entries)) return -E2BIG; cgrp = READ_ONCE(array->ptrs[idx]); if (unlikely(!cgrp)) return -EAGAIN; return sk_under_cgroup_hierarchy(sk, cgrp); } static const struct bpf_func_proto bpf_skb_under_cgroup_proto = { .func = bpf_skb_under_cgroup, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_ANYTHING, }; #ifdef CONFIG_SOCK_CGROUP_DATA static inline u64 __bpf_sk_cgroup_id(struct sock *sk) { struct cgroup *cgrp; sk = sk_to_full_sk(sk); if (!sk || !sk_fullsock(sk)) return 0; cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data); return cgroup_id(cgrp); } BPF_CALL_1(bpf_skb_cgroup_id, const struct sk_buff *, skb) { return __bpf_sk_cgroup_id(skb->sk); } static const struct bpf_func_proto bpf_skb_cgroup_id_proto = { .func = bpf_skb_cgroup_id, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; static inline u64 __bpf_sk_ancestor_cgroup_id(struct sock *sk, int ancestor_level) { struct cgroup *ancestor; struct cgroup *cgrp; sk = sk_to_full_sk(sk); if (!sk || !sk_fullsock(sk)) return 0; cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data); ancestor = cgroup_ancestor(cgrp, ancestor_level); if (!ancestor) return 0; return cgroup_id(ancestor); } BPF_CALL_2(bpf_skb_ancestor_cgroup_id, const struct sk_buff *, skb, int, ancestor_level) { return __bpf_sk_ancestor_cgroup_id(skb->sk, ancestor_level); } static const struct bpf_func_proto bpf_skb_ancestor_cgroup_id_proto = { .func = bpf_skb_ancestor_cgroup_id, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; BPF_CALL_1(bpf_sk_cgroup_id, struct sock *, sk) { return __bpf_sk_cgroup_id(sk); } static const struct bpf_func_proto bpf_sk_cgroup_id_proto = { .func = bpf_sk_cgroup_id, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, }; BPF_CALL_2(bpf_sk_ancestor_cgroup_id, struct sock *, sk, int, ancestor_level) { return __bpf_sk_ancestor_cgroup_id(sk, ancestor_level); } static const struct bpf_func_proto bpf_sk_ancestor_cgroup_id_proto = { .func = bpf_sk_ancestor_cgroup_id, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg2_type = ARG_ANYTHING, }; #endif static unsigned long bpf_xdp_copy(void *dst, const void *ctx, unsigned long off, unsigned long len) { struct xdp_buff *xdp = (struct xdp_buff *)ctx; bpf_xdp_copy_buf(xdp, off, dst, len, false); return 0; } BPF_CALL_5(bpf_xdp_event_output, struct xdp_buff *, xdp, struct bpf_map *, map, u64, flags, void *, meta, u64, meta_size) { u64 xdp_size = (flags & BPF_F_CTXLEN_MASK) >> 32; if (unlikely(flags & ~(BPF_F_CTXLEN_MASK | BPF_F_INDEX_MASK))) return -EINVAL; if (unlikely(!xdp || xdp_size > xdp_get_buff_len(xdp))) return -EFAULT; return bpf_event_output(map, flags, meta, meta_size, xdp, xdp_size, bpf_xdp_copy); } static const struct bpf_func_proto bpf_xdp_event_output_proto = { .func = bpf_xdp_event_output, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE_OR_ZERO, }; BTF_ID_LIST_SINGLE(bpf_xdp_output_btf_ids, struct, xdp_buff) const struct bpf_func_proto bpf_xdp_output_proto = { .func = bpf_xdp_event_output, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID, .arg1_btf_id = &bpf_xdp_output_btf_ids[0], .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE_OR_ZERO, }; BPF_CALL_1(bpf_get_socket_cookie, struct sk_buff *, skb) { return skb->sk ? __sock_gen_cookie(skb->sk) : 0; } static const struct bpf_func_proto bpf_get_socket_cookie_proto = { .func = bpf_get_socket_cookie, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_1(bpf_get_socket_cookie_sock_addr, struct bpf_sock_addr_kern *, ctx) { return __sock_gen_cookie(ctx->sk); } static const struct bpf_func_proto bpf_get_socket_cookie_sock_addr_proto = { .func = bpf_get_socket_cookie_sock_addr, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_1(bpf_get_socket_cookie_sock, struct sock *, ctx) { return __sock_gen_cookie(ctx); } static const struct bpf_func_proto bpf_get_socket_cookie_sock_proto = { .func = bpf_get_socket_cookie_sock, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_1(bpf_get_socket_ptr_cookie, struct sock *, sk) { return sk ? sock_gen_cookie(sk) : 0; } const struct bpf_func_proto bpf_get_socket_ptr_cookie_proto = { .func = bpf_get_socket_ptr_cookie, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON | PTR_MAYBE_NULL, }; BPF_CALL_1(bpf_get_socket_cookie_sock_ops, struct bpf_sock_ops_kern *, ctx) { return __sock_gen_cookie(ctx->sk); } static const struct bpf_func_proto bpf_get_socket_cookie_sock_ops_proto = { .func = bpf_get_socket_cookie_sock_ops, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; static u64 __bpf_get_netns_cookie(struct sock *sk) { const struct net *net = sk ? sock_net(sk) : &init_net; return net->net_cookie; } BPF_CALL_1(bpf_get_netns_cookie, struct sk_buff *, skb) { return __bpf_get_netns_cookie(skb && skb->sk ? skb->sk : NULL); } static const struct bpf_func_proto bpf_get_netns_cookie_proto = { .func = bpf_get_netns_cookie, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX_OR_NULL, }; BPF_CALL_1(bpf_get_netns_cookie_sock, struct sock *, ctx) { return __bpf_get_netns_cookie(ctx); } static const struct bpf_func_proto bpf_get_netns_cookie_sock_proto = { .func = bpf_get_netns_cookie_sock, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX_OR_NULL, }; BPF_CALL_1(bpf_get_netns_cookie_sock_addr, struct bpf_sock_addr_kern *, ctx) { return __bpf_get_netns_cookie(ctx ? ctx->sk : NULL); } static const struct bpf_func_proto bpf_get_netns_cookie_sock_addr_proto = { .func = bpf_get_netns_cookie_sock_addr, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX_OR_NULL, }; BPF_CALL_1(bpf_get_netns_cookie_sock_ops, struct bpf_sock_ops_kern *, ctx) { return __bpf_get_netns_cookie(ctx ? ctx->sk : NULL); } static const struct bpf_func_proto bpf_get_netns_cookie_sock_ops_proto = { .func = bpf_get_netns_cookie_sock_ops, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX_OR_NULL, }; BPF_CALL_1(bpf_get_netns_cookie_sk_msg, struct sk_msg *, ctx) { return __bpf_get_netns_cookie(ctx ? ctx->sk : NULL); } static const struct bpf_func_proto bpf_get_netns_cookie_sk_msg_proto = { .func = bpf_get_netns_cookie_sk_msg, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX_OR_NULL, }; BPF_CALL_1(bpf_get_socket_uid, struct sk_buff *, skb) { struct sock *sk = sk_to_full_sk(skb->sk); kuid_t kuid; if (!sk || !sk_fullsock(sk)) return overflowuid; kuid = sock_net_uid(sock_net(sk), sk); return from_kuid_munged(sock_net(sk)->user_ns, kuid); } static const struct bpf_func_proto bpf_get_socket_uid_proto = { .func = bpf_get_socket_uid, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; static int sk_bpf_set_get_cb_flags(struct sock *sk, char *optval, bool getopt) { u32 sk_bpf_cb_flags; if (getopt) { *(u32 *)optval = sk->sk_bpf_cb_flags; return 0; } sk_bpf_cb_flags = *(u32 *)optval; if (sk_bpf_cb_flags & ~SK_BPF_CB_MASK) return -EINVAL; sk->sk_bpf_cb_flags = sk_bpf_cb_flags; return 0; } static int sol_socket_sockopt(struct sock *sk, int optname, char *optval, int *optlen, bool getopt) { switch (optname) { case SO_REUSEADDR: case SO_SNDBUF: case SO_RCVBUF: case SO_KEEPALIVE: case SO_PRIORITY: case SO_REUSEPORT: case SO_RCVLOWAT: case SO_MARK: case SO_MAX_PACING_RATE: case SO_BINDTOIFINDEX: case SO_TXREHASH: case SK_BPF_CB_FLAGS: if (*optlen != sizeof(int)) return -EINVAL; break; case SO_BINDTODEVICE: break; default: return -EINVAL; } if (optname == SK_BPF_CB_FLAGS) return sk_bpf_set_get_cb_flags(sk, optval, getopt); if (getopt) { if (optname == SO_BINDTODEVICE) return -EINVAL; return sk_getsockopt(sk, SOL_SOCKET, optname, KERNEL_SOCKPTR(optval), KERNEL_SOCKPTR(optlen)); } return sk_setsockopt(sk, SOL_SOCKET, optname, KERNEL_SOCKPTR(optval), *optlen); } static int bpf_sol_tcp_getsockopt(struct sock *sk, int optname, char *optval, int optlen) { if (optlen != sizeof(int)) return -EINVAL; switch (optname) { case TCP_BPF_SOCK_OPS_CB_FLAGS: { int cb_flags = tcp_sk(sk)->bpf_sock_ops_cb_flags; memcpy(optval, &cb_flags, optlen); break; } case TCP_BPF_RTO_MIN: { int rto_min_us = jiffies_to_usecs(inet_csk(sk)->icsk_rto_min); memcpy(optval, &rto_min_us, optlen); break; } case TCP_BPF_DELACK_MAX: { int delack_max_us = jiffies_to_usecs(inet_csk(sk)->icsk_delack_max); memcpy(optval, &delack_max_us, optlen); break; } default: return -EINVAL; } return 0; } static int bpf_sol_tcp_setsockopt(struct sock *sk, int optname, char *optval, int optlen) { struct tcp_sock *tp = tcp_sk(sk); unsigned long timeout; int val; if (optlen != sizeof(int)) return -EINVAL; val = *(int *)optval; /* Only some options are supported */ switch (optname) { case TCP_BPF_IW: if (val <= 0 || tp->data_segs_out > tp->syn_data) return -EINVAL; tcp_snd_cwnd_set(tp, val); break; case TCP_BPF_SNDCWND_CLAMP: if (val <= 0) return -EINVAL; tp->snd_cwnd_clamp = val; tp->snd_ssthresh = val; break; case TCP_BPF_DELACK_MAX: timeout = usecs_to_jiffies(val); if (timeout > TCP_DELACK_MAX || timeout < TCP_TIMEOUT_MIN) return -EINVAL; inet_csk(sk)->icsk_delack_max = timeout; break; case TCP_BPF_RTO_MIN: timeout = usecs_to_jiffies(val); if (timeout > TCP_RTO_MIN || timeout < TCP_TIMEOUT_MIN) return -EINVAL; inet_csk(sk)->icsk_rto_min = timeout; break; case TCP_BPF_SOCK_OPS_CB_FLAGS: if (val & ~(BPF_SOCK_OPS_ALL_CB_FLAGS)) return -EINVAL; tp->bpf_sock_ops_cb_flags = val; break; default: return -EINVAL; } return 0; } static int sol_tcp_sockopt_congestion(struct sock *sk, char *optval, int *optlen, bool getopt) { struct tcp_sock *tp; int ret; if (*optlen < 2) return -EINVAL; if (getopt) { if (!inet_csk(sk)->icsk_ca_ops) return -EINVAL; /* BPF expects NULL-terminated tcp-cc string */ optval[--(*optlen)] = '\0'; return do_tcp_getsockopt(sk, SOL_TCP, TCP_CONGESTION, KERNEL_SOCKPTR(optval), KERNEL_SOCKPTR(optlen)); } /* "cdg" is the only cc that alloc a ptr * in inet_csk_ca area. The bpf-tcp-cc may * overwrite this ptr after switching to cdg. */ if (*optlen >= sizeof("cdg") - 1 && !strncmp("cdg", optval, *optlen)) return -ENOTSUPP; /* It stops this looping * * .init => bpf_setsockopt(tcp_cc) => .init => * bpf_setsockopt(tcp_cc)" => .init => .... * * The second bpf_setsockopt(tcp_cc) is not allowed * in order to break the loop when both .init * are the same bpf prog. * * This applies even the second bpf_setsockopt(tcp_cc) * does not cause a loop. This limits only the first * '.init' can call bpf_setsockopt(TCP_CONGESTION) to * pick a fallback cc (eg. peer does not support ECN) * and the second '.init' cannot fallback to * another. */ tp = tcp_sk(sk); if (tp->bpf_chg_cc_inprogress) return -EBUSY; tp->bpf_chg_cc_inprogress = 1; ret = do_tcp_setsockopt(sk, SOL_TCP, TCP_CONGESTION, KERNEL_SOCKPTR(optval), *optlen); tp->bpf_chg_cc_inprogress = 0; return ret; } static int sol_tcp_sockopt(struct sock *sk, int optname, char *optval, int *optlen, bool getopt) { if (sk->sk_protocol != IPPROTO_TCP) return -EINVAL; switch (optname) { case TCP_NODELAY: case TCP_MAXSEG: case TCP_KEEPIDLE: case TCP_KEEPINTVL: case TCP_KEEPCNT: case TCP_SYNCNT: case TCP_WINDOW_CLAMP: case TCP_THIN_LINEAR_TIMEOUTS: case TCP_USER_TIMEOUT: case TCP_NOTSENT_LOWAT: case TCP_SAVE_SYN: case TCP_RTO_MAX_MS: if (*optlen != sizeof(int)) return -EINVAL; break; case TCP_CONGESTION: return sol_tcp_sockopt_congestion(sk, optval, optlen, getopt); case TCP_SAVED_SYN: if (*optlen < 1) return -EINVAL; break; default: if (getopt) return bpf_sol_tcp_getsockopt(sk, optname, optval, *optlen); return bpf_sol_tcp_setsockopt(sk, optname, optval, *optlen); } if (getopt) { if (optname == TCP_SAVED_SYN) { struct tcp_sock *tp = tcp_sk(sk); if (!tp->saved_syn || *optlen > tcp_saved_syn_len(tp->saved_syn)) return -EINVAL; memcpy(optval, tp->saved_syn->data, *optlen); /* It cannot free tp->saved_syn here because it * does not know if the user space still needs it. */ return 0; } return do_tcp_getsockopt(sk, SOL_TCP, optname, KERNEL_SOCKPTR(optval), KERNEL_SOCKPTR(optlen)); } return do_tcp_setsockopt(sk, SOL_TCP, optname, KERNEL_SOCKPTR(optval), *optlen); } static int sol_ip_sockopt(struct sock *sk, int optname, char *optval, int *optlen, bool getopt) { if (sk->sk_family != AF_INET) return -EINVAL; switch (optname) { case IP_TOS: if (*optlen != sizeof(int)) return -EINVAL; break; default: return -EINVAL; } if (getopt) return do_ip_getsockopt(sk, SOL_IP, optname, KERNEL_SOCKPTR(optval), KERNEL_SOCKPTR(optlen)); return do_ip_setsockopt(sk, SOL_IP, optname, KERNEL_SOCKPTR(optval), *optlen); } static int sol_ipv6_sockopt(struct sock *sk, int optname, char *optval, int *optlen, bool getopt) { if (sk->sk_family != AF_INET6) return -EINVAL; switch (optname) { case IPV6_TCLASS: case IPV6_AUTOFLOWLABEL: if (*optlen != sizeof(int)) return -EINVAL; break; default: return -EINVAL; } if (getopt) return ipv6_bpf_stub->ipv6_getsockopt(sk, SOL_IPV6, optname, KERNEL_SOCKPTR(optval), KERNEL_SOCKPTR(optlen)); return ipv6_bpf_stub->ipv6_setsockopt(sk, SOL_IPV6, optname, KERNEL_SOCKPTR(optval), *optlen); } static int __bpf_setsockopt(struct sock *sk, int level, int optname, char *optval, int optlen) { if (!sk_fullsock(sk)) return -EINVAL; if (level == SOL_SOCKET) return sol_socket_sockopt(sk, optname, optval, &optlen, false); else if (IS_ENABLED(CONFIG_INET) && level == SOL_IP) return sol_ip_sockopt(sk, optname, optval, &optlen, false); else if (IS_ENABLED(CONFIG_IPV6) && level == SOL_IPV6) return sol_ipv6_sockopt(sk, optname, optval, &optlen, false); else if (IS_ENABLED(CONFIG_INET) && level == SOL_TCP) return sol_tcp_sockopt(sk, optname, optval, &optlen, false); return -EINVAL; } static bool is_locked_tcp_sock_ops(struct bpf_sock_ops_kern *bpf_sock) { return bpf_sock->op <= BPF_SOCK_OPS_WRITE_HDR_OPT_CB; } static int _bpf_setsockopt(struct sock *sk, int level, int optname, char *optval, int optlen) { if (sk_fullsock(sk)) sock_owned_by_me(sk); return __bpf_setsockopt(sk, level, optname, optval, optlen); } static int __bpf_getsockopt(struct sock *sk, int level, int optname, char *optval, int optlen) { int err, saved_optlen = optlen; if (!sk_fullsock(sk)) { err = -EINVAL; goto done; } if (level == SOL_SOCKET) err = sol_socket_sockopt(sk, optname, optval, &optlen, true); else if (IS_ENABLED(CONFIG_INET) && level == SOL_TCP) err = sol_tcp_sockopt(sk, optname, optval, &optlen, true); else if (IS_ENABLED(CONFIG_INET) && level == SOL_IP) err = sol_ip_sockopt(sk, optname, optval, &optlen, true); else if (IS_ENABLED(CONFIG_IPV6) && level == SOL_IPV6) err = sol_ipv6_sockopt(sk, optname, optval, &optlen, true); else err = -EINVAL; done: if (err) optlen = 0; if (optlen < saved_optlen) memset(optval + optlen, 0, saved_optlen - optlen); return err; } static int _bpf_getsockopt(struct sock *sk, int level, int optname, char *optval, int optlen) { if (sk_fullsock(sk)) sock_owned_by_me(sk); return __bpf_getsockopt(sk, level, optname, optval, optlen); } BPF_CALL_5(bpf_sk_setsockopt, struct sock *, sk, int, level, int, optname, char *, optval, int, optlen) { return _bpf_setsockopt(sk, level, optname, optval, optlen); } const struct bpf_func_proto bpf_sk_setsockopt_proto = { .func = bpf_sk_setsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_sk_getsockopt, struct sock *, sk, int, level, int, optname, char *, optval, int, optlen) { return _bpf_getsockopt(sk, level, optname, optval, optlen); } const struct bpf_func_proto bpf_sk_getsockopt_proto = { .func = bpf_sk_getsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_UNINIT_MEM, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_unlocked_sk_setsockopt, struct sock *, sk, int, level, int, optname, char *, optval, int, optlen) { return __bpf_setsockopt(sk, level, optname, optval, optlen); } const struct bpf_func_proto bpf_unlocked_sk_setsockopt_proto = { .func = bpf_unlocked_sk_setsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_unlocked_sk_getsockopt, struct sock *, sk, int, level, int, optname, char *, optval, int, optlen) { return __bpf_getsockopt(sk, level, optname, optval, optlen); } const struct bpf_func_proto bpf_unlocked_sk_getsockopt_proto = { .func = bpf_unlocked_sk_getsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_UNINIT_MEM, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_sock_addr_setsockopt, struct bpf_sock_addr_kern *, ctx, int, level, int, optname, char *, optval, int, optlen) { return _bpf_setsockopt(ctx->sk, level, optname, optval, optlen); } static const struct bpf_func_proto bpf_sock_addr_setsockopt_proto = { .func = bpf_sock_addr_setsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_sock_addr_getsockopt, struct bpf_sock_addr_kern *, ctx, int, level, int, optname, char *, optval, int, optlen) { return _bpf_getsockopt(ctx->sk, level, optname, optval, optlen); } static const struct bpf_func_proto bpf_sock_addr_getsockopt_proto = { .func = bpf_sock_addr_getsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_UNINIT_MEM, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_sock_ops_setsockopt, struct bpf_sock_ops_kern *, bpf_sock, int, level, int, optname, char *, optval, int, optlen) { if (!is_locked_tcp_sock_ops(bpf_sock)) return -EOPNOTSUPP; return _bpf_setsockopt(bpf_sock->sk, level, optname, optval, optlen); } static const struct bpf_func_proto bpf_sock_ops_setsockopt_proto = { .func = bpf_sock_ops_setsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE, }; static int bpf_sock_ops_get_syn(struct bpf_sock_ops_kern *bpf_sock, int optname, const u8 **start) { struct sk_buff *syn_skb = bpf_sock->syn_skb; const u8 *hdr_start; int ret; if (syn_skb) { /* sk is a request_sock here */ if (optname == TCP_BPF_SYN) { hdr_start = syn_skb->data; ret = tcp_hdrlen(syn_skb); } else if (optname == TCP_BPF_SYN_IP) { hdr_start = skb_network_header(syn_skb); ret = skb_network_header_len(syn_skb) + tcp_hdrlen(syn_skb); } else { /* optname == TCP_BPF_SYN_MAC */ hdr_start = skb_mac_header(syn_skb); ret = skb_mac_header_len(syn_skb) + skb_network_header_len(syn_skb) + tcp_hdrlen(syn_skb); } } else { struct sock *sk = bpf_sock->sk; struct saved_syn *saved_syn; if (sk->sk_state == TCP_NEW_SYN_RECV) /* synack retransmit. bpf_sock->syn_skb will * not be available. It has to resort to * saved_syn (if it is saved). */ saved_syn = inet_reqsk(sk)->saved_syn; else saved_syn = tcp_sk(sk)->saved_syn; if (!saved_syn) return -ENOENT; if (optname == TCP_BPF_SYN) { hdr_start = saved_syn->data + saved_syn->mac_hdrlen + saved_syn->network_hdrlen; ret = saved_syn->tcp_hdrlen; } else if (optname == TCP_BPF_SYN_IP) { hdr_start = saved_syn->data + saved_syn->mac_hdrlen; ret = saved_syn->network_hdrlen + saved_syn->tcp_hdrlen; } else { /* optname == TCP_BPF_SYN_MAC */ /* TCP_SAVE_SYN may not have saved the mac hdr */ if (!saved_syn->mac_hdrlen) return -ENOENT; hdr_start = saved_syn->data; ret = saved_syn->mac_hdrlen + saved_syn->network_hdrlen + saved_syn->tcp_hdrlen; } } *start = hdr_start; return ret; } BPF_CALL_5(bpf_sock_ops_getsockopt, struct bpf_sock_ops_kern *, bpf_sock, int, level, int, optname, char *, optval, int, optlen) { if (!is_locked_tcp_sock_ops(bpf_sock)) return -EOPNOTSUPP; if (IS_ENABLED(CONFIG_INET) && level == SOL_TCP && optname >= TCP_BPF_SYN && optname <= TCP_BPF_SYN_MAC) { int ret, copy_len = 0; const u8 *start; ret = bpf_sock_ops_get_syn(bpf_sock, optname, &start); if (ret > 0) { copy_len = ret; if (optlen < copy_len) { copy_len = optlen; ret = -ENOSPC; } memcpy(optval, start, copy_len); } /* Zero out unused buffer at the end */ memset(optval + copy_len, 0, optlen - copy_len); return ret; } return _bpf_getsockopt(bpf_sock->sk, level, optname, optval, optlen); } static const struct bpf_func_proto bpf_sock_ops_getsockopt_proto = { .func = bpf_sock_ops_getsockopt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_UNINIT_MEM, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_2(bpf_sock_ops_cb_flags_set, struct bpf_sock_ops_kern *, bpf_sock, int, argval) { struct sock *sk = bpf_sock->sk; int val = argval & BPF_SOCK_OPS_ALL_CB_FLAGS; if (!is_locked_tcp_sock_ops(bpf_sock)) return -EOPNOTSUPP; if (!IS_ENABLED(CONFIG_INET) || !sk_fullsock(sk)) return -EINVAL; tcp_sk(sk)->bpf_sock_ops_cb_flags = val; return argval & (~BPF_SOCK_OPS_ALL_CB_FLAGS); } static const struct bpf_func_proto bpf_sock_ops_cb_flags_set_proto = { .func = bpf_sock_ops_cb_flags_set, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, }; const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly; EXPORT_SYMBOL_GPL(ipv6_bpf_stub); BPF_CALL_3(bpf_bind, struct bpf_sock_addr_kern *, ctx, struct sockaddr *, addr, int, addr_len) { #ifdef CONFIG_INET struct sock *sk = ctx->sk; u32 flags = BIND_FROM_BPF; int err; err = -EINVAL; if (addr_len < offsetofend(struct sockaddr, sa_family)) return err; if (addr->sa_family == AF_INET) { if (addr_len < sizeof(struct sockaddr_in)) return err; if (((struct sockaddr_in *)addr)->sin_port == htons(0)) flags |= BIND_FORCE_ADDRESS_NO_PORT; return __inet_bind(sk, addr, addr_len, flags); #if IS_ENABLED(CONFIG_IPV6) } else if (addr->sa_family == AF_INET6) { if (addr_len < SIN6_LEN_RFC2133) return err; if (((struct sockaddr_in6 *)addr)->sin6_port == htons(0)) flags |= BIND_FORCE_ADDRESS_NO_PORT; /* ipv6_bpf_stub cannot be NULL, since it's called from * bpf_cgroup_inet6_connect hook and ipv6 is already loaded */ return ipv6_bpf_stub->inet6_bind(sk, addr, addr_len, flags); #endif /* CONFIG_IPV6 */ } #endif /* CONFIG_INET */ return -EAFNOSUPPORT; } static const struct bpf_func_proto bpf_bind_proto = { .func = bpf_bind, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE, }; #ifdef CONFIG_XFRM #if (IS_BUILTIN(CONFIG_XFRM_INTERFACE) && IS_ENABLED(CONFIG_DEBUG_INFO_BTF)) || \ (IS_MODULE(CONFIG_XFRM_INTERFACE) && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES)) struct metadata_dst __percpu *xfrm_bpf_md_dst; EXPORT_SYMBOL_GPL(xfrm_bpf_md_dst); #endif BPF_CALL_5(bpf_skb_get_xfrm_state, struct sk_buff *, skb, u32, index, struct bpf_xfrm_state *, to, u32, size, u64, flags) { const struct sec_path *sp = skb_sec_path(skb); const struct xfrm_state *x; if (!sp || unlikely(index >= sp->len || flags)) goto err_clear; x = sp->xvec[index]; if (unlikely(size != sizeof(struct bpf_xfrm_state))) goto err_clear; to->reqid = x->props.reqid; to->spi = x->id.spi; to->family = x->props.family; to->ext = 0; if (to->family == AF_INET6) { memcpy(to->remote_ipv6, x->props.saddr.a6, sizeof(to->remote_ipv6)); } else { to->remote_ipv4 = x->props.saddr.a4; memset(&to->remote_ipv6[1], 0, sizeof(__u32) * 3); } return 0; err_clear: memset(to, 0, size); return -EINVAL; } static const struct bpf_func_proto bpf_skb_get_xfrm_state_proto = { .func = bpf_skb_get_xfrm_state, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, .arg5_type = ARG_ANYTHING, }; #endif #if IS_ENABLED(CONFIG_INET) || IS_ENABLED(CONFIG_IPV6) static int bpf_fib_set_fwd_params(struct bpf_fib_lookup *params, u32 mtu) { params->h_vlan_TCI = 0; params->h_vlan_proto = 0; if (mtu) params->mtu_result = mtu; /* union with tot_len */ return 0; } #endif #if IS_ENABLED(CONFIG_INET) static int bpf_ipv4_fib_lookup(struct net *net, struct bpf_fib_lookup *params, u32 flags, bool check_mtu) { struct fib_nh_common *nhc; struct in_device *in_dev; struct neighbour *neigh; struct net_device *dev; struct fib_result res; struct flowi4 fl4; u32 mtu = 0; int err; dev = dev_get_by_index_rcu(net, params->ifindex); if (unlikely(!dev)) return -ENODEV; /* verify forwarding is enabled on this interface */ in_dev = __in_dev_get_rcu(dev); if (unlikely(!in_dev || !IN_DEV_FORWARD(in_dev))) return BPF_FIB_LKUP_RET_FWD_DISABLED; if (flags & BPF_FIB_LOOKUP_OUTPUT) { fl4.flowi4_iif = 1; fl4.flowi4_oif = params->ifindex; } else { fl4.flowi4_iif = params->ifindex; fl4.flowi4_oif = 0; } fl4.flowi4_tos = params->tos & INET_DSCP_MASK; fl4.flowi4_scope = RT_SCOPE_UNIVERSE; fl4.flowi4_flags = 0; fl4.flowi4_proto = params->l4_protocol; fl4.daddr = params->ipv4_dst; fl4.saddr = params->ipv4_src; fl4.fl4_sport = params->sport; fl4.fl4_dport = params->dport; fl4.flowi4_multipath_hash = 0; if (flags & BPF_FIB_LOOKUP_DIRECT) { u32 tbid = l3mdev_fib_table_rcu(dev) ? : RT_TABLE_MAIN; struct fib_table *tb; if (flags & BPF_FIB_LOOKUP_TBID) { tbid = params->tbid; /* zero out for vlan output */ params->tbid = 0; } tb = fib_get_table(net, tbid); if (unlikely(!tb)) return BPF_FIB_LKUP_RET_NOT_FWDED; err = fib_table_lookup(tb, &fl4, &res, FIB_LOOKUP_NOREF); } else { if (flags & BPF_FIB_LOOKUP_MARK) fl4.flowi4_mark = params->mark; else fl4.flowi4_mark = 0; fl4.flowi4_secid = 0; fl4.flowi4_tun_key.tun_id = 0; fl4.flowi4_uid = sock_net_uid(net, NULL); err = fib_lookup(net, &fl4, &res, FIB_LOOKUP_NOREF); } if (err) { /* map fib lookup errors to RTN_ type */ if (err == -EINVAL) return BPF_FIB_LKUP_RET_BLACKHOLE; if (err == -EHOSTUNREACH) return BPF_FIB_LKUP_RET_UNREACHABLE; if (err == -EACCES) return BPF_FIB_LKUP_RET_PROHIBIT; return BPF_FIB_LKUP_RET_NOT_FWDED; } if (res.type != RTN_UNICAST) return BPF_FIB_LKUP_RET_NOT_FWDED; if (fib_info_num_path(res.fi) > 1) fib_select_path(net, &res, &fl4, NULL); if (check_mtu) { mtu = ip_mtu_from_fib_result(&res, params->ipv4_dst); if (params->tot_len > mtu) { params->mtu_result = mtu; /* union with tot_len */ return BPF_FIB_LKUP_RET_FRAG_NEEDED; } } nhc = res.nhc; /* do not handle lwt encaps right now */ if (nhc->nhc_lwtstate) return BPF_FIB_LKUP_RET_UNSUPP_LWT; dev = nhc->nhc_dev; params->rt_metric = res.fi->fib_priority; params->ifindex = dev->ifindex; if (flags & BPF_FIB_LOOKUP_SRC) params->ipv4_src = fib_result_prefsrc(net, &res); /* xdp and cls_bpf programs are run in RCU-bh so * rcu_read_lock_bh is not needed here */ if (likely(nhc->nhc_gw_family != AF_INET6)) { if (nhc->nhc_gw_family) params->ipv4_dst = nhc->nhc_gw.ipv4; } else { struct in6_addr *dst = (struct in6_addr *)params->ipv6_dst; params->family = AF_INET6; *dst = nhc->nhc_gw.ipv6; } if (flags & BPF_FIB_LOOKUP_SKIP_NEIGH) goto set_fwd_params; if (likely(nhc->nhc_gw_family != AF_INET6)) neigh = __ipv4_neigh_lookup_noref(dev, (__force u32)params->ipv4_dst); else neigh = __ipv6_neigh_lookup_noref_stub(dev, params->ipv6_dst); if (!neigh || !(READ_ONCE(neigh->nud_state) & NUD_VALID)) return BPF_FIB_LKUP_RET_NO_NEIGH; memcpy(params->dmac, neigh->ha, ETH_ALEN); memcpy(params->smac, dev->dev_addr, ETH_ALEN); set_fwd_params: return bpf_fib_set_fwd_params(params, mtu); } #endif #if IS_ENABLED(CONFIG_IPV6) static int bpf_ipv6_fib_lookup(struct net *net, struct bpf_fib_lookup *params, u32 flags, bool check_mtu) { struct in6_addr *src = (struct in6_addr *) params->ipv6_src; struct in6_addr *dst = (struct in6_addr *) params->ipv6_dst; struct fib6_result res = {}; struct neighbour *neigh; struct net_device *dev; struct inet6_dev *idev; struct flowi6 fl6; int strict = 0; int oif, err; u32 mtu = 0; /* link local addresses are never forwarded */ if (rt6_need_strict(dst) || rt6_need_strict(src)) return BPF_FIB_LKUP_RET_NOT_FWDED; dev = dev_get_by_index_rcu(net, params->ifindex); if (unlikely(!dev)) return -ENODEV; idev = __in6_dev_get_safely(dev); if (unlikely(!idev || !READ_ONCE(idev->cnf.forwarding))) return BPF_FIB_LKUP_RET_FWD_DISABLED; if (flags & BPF_FIB_LOOKUP_OUTPUT) { fl6.flowi6_iif = 1; oif = fl6.flowi6_oif = params->ifindex; } else { oif = fl6.flowi6_iif = params->ifindex; fl6.flowi6_oif = 0; strict = RT6_LOOKUP_F_HAS_SADDR; } fl6.flowlabel = params->flowinfo; fl6.flowi6_scope = 0; fl6.flowi6_flags = 0; fl6.mp_hash = 0; fl6.flowi6_proto = params->l4_protocol; fl6.daddr = *dst; fl6.saddr = *src; fl6.fl6_sport = params->sport; fl6.fl6_dport = params->dport; if (flags & BPF_FIB_LOOKUP_DIRECT) { u32 tbid = l3mdev_fib_table_rcu(dev) ? : RT_TABLE_MAIN; struct fib6_table *tb; if (flags & BPF_FIB_LOOKUP_TBID) { tbid = params->tbid; /* zero out for vlan output */ params->tbid = 0; } tb = ipv6_stub->fib6_get_table(net, tbid); if (unlikely(!tb)) return BPF_FIB_LKUP_RET_NOT_FWDED; err = ipv6_stub->fib6_table_lookup(net, tb, oif, &fl6, &res, strict); } else { if (flags & BPF_FIB_LOOKUP_MARK) fl6.flowi6_mark = params->mark; else fl6.flowi6_mark = 0; fl6.flowi6_secid = 0; fl6.flowi6_tun_key.tun_id = 0; fl6.flowi6_uid = sock_net_uid(net, NULL); err = ipv6_stub->fib6_lookup(net, oif, &fl6, &res, strict); } if (unlikely(err || IS_ERR_OR_NULL(res.f6i) || res.f6i == net->ipv6.fib6_null_entry)) return BPF_FIB_LKUP_RET_NOT_FWDED; switch (res.fib6_type) { /* only unicast is forwarded */ case RTN_UNICAST: break; case RTN_BLACKHOLE: return BPF_FIB_LKUP_RET_BLACKHOLE; case RTN_UNREACHABLE: return BPF_FIB_LKUP_RET_UNREACHABLE; case RTN_PROHIBIT: return BPF_FIB_LKUP_RET_PROHIBIT; default: return BPF_FIB_LKUP_RET_NOT_FWDED; } ipv6_stub->fib6_select_path(net, &res, &fl6, fl6.flowi6_oif, fl6.flowi6_oif != 0, NULL, strict); if (check_mtu) { mtu = ipv6_stub->ip6_mtu_from_fib6(&res, dst, src); if (params->tot_len > mtu) { params->mtu_result = mtu; /* union with tot_len */ return BPF_FIB_LKUP_RET_FRAG_NEEDED; } } if (res.nh->fib_nh_lws) return BPF_FIB_LKUP_RET_UNSUPP_LWT; if (res.nh->fib_nh_gw_family) *dst = res.nh->fib_nh_gw6; dev = res.nh->fib_nh_dev; params->rt_metric = res.f6i->fib6_metric; params->ifindex = dev->ifindex; if (flags & BPF_FIB_LOOKUP_SRC) { if (res.f6i->fib6_prefsrc.plen) { *src = res.f6i->fib6_prefsrc.addr; } else { err = ipv6_bpf_stub->ipv6_dev_get_saddr(net, dev, &fl6.daddr, 0, src); if (err) return BPF_FIB_LKUP_RET_NO_SRC_ADDR; } } if (flags & BPF_FIB_LOOKUP_SKIP_NEIGH) goto set_fwd_params; /* xdp and cls_bpf programs are run in RCU-bh so rcu_read_lock_bh is * not needed here. */ neigh = __ipv6_neigh_lookup_noref_stub(dev, dst); if (!neigh || !(READ_ONCE(neigh->nud_state) & NUD_VALID)) return BPF_FIB_LKUP_RET_NO_NEIGH; memcpy(params->dmac, neigh->ha, ETH_ALEN); memcpy(params->smac, dev->dev_addr, ETH_ALEN); set_fwd_params: return bpf_fib_set_fwd_params(params, mtu); } #endif #define BPF_FIB_LOOKUP_MASK (BPF_FIB_LOOKUP_DIRECT | BPF_FIB_LOOKUP_OUTPUT | \ BPF_FIB_LOOKUP_SKIP_NEIGH | BPF_FIB_LOOKUP_TBID | \ BPF_FIB_LOOKUP_SRC | BPF_FIB_LOOKUP_MARK) BPF_CALL_4(bpf_xdp_fib_lookup, struct xdp_buff *, ctx, struct bpf_fib_lookup *, params, int, plen, u32, flags) { if (plen < sizeof(*params)) return -EINVAL; if (flags & ~BPF_FIB_LOOKUP_MASK) return -EINVAL; switch (params->family) { #if IS_ENABLED(CONFIG_INET) case AF_INET: return bpf_ipv4_fib_lookup(dev_net(ctx->rxq->dev), params, flags, true); #endif #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: return bpf_ipv6_fib_lookup(dev_net(ctx->rxq->dev), params, flags, true); #endif } return -EAFNOSUPPORT; } static const struct bpf_func_proto bpf_xdp_fib_lookup_proto = { .func = bpf_xdp_fib_lookup, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_ANYTHING, }; BPF_CALL_4(bpf_skb_fib_lookup, struct sk_buff *, skb, struct bpf_fib_lookup *, params, int, plen, u32, flags) { struct net *net = dev_net(skb->dev); int rc = -EAFNOSUPPORT; bool check_mtu = false; if (plen < sizeof(*params)) return -EINVAL; if (flags & ~BPF_FIB_LOOKUP_MASK) return -EINVAL; if (params->tot_len) check_mtu = true; switch (params->family) { #if IS_ENABLED(CONFIG_INET) case AF_INET: rc = bpf_ipv4_fib_lookup(net, params, flags, check_mtu); break; #endif #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: rc = bpf_ipv6_fib_lookup(net, params, flags, check_mtu); break; #endif } if (rc == BPF_FIB_LKUP_RET_SUCCESS && !check_mtu) { struct net_device *dev; /* When tot_len isn't provided by user, check skb * against MTU of FIB lookup resulting net_device */ dev = dev_get_by_index_rcu(net, params->ifindex); if (!is_skb_forwardable(dev, skb)) rc = BPF_FIB_LKUP_RET_FRAG_NEEDED; params->mtu_result = dev->mtu; /* union with tot_len */ } return rc; } static const struct bpf_func_proto bpf_skb_fib_lookup_proto = { .func = bpf_skb_fib_lookup, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_ANYTHING, }; static struct net_device *__dev_via_ifindex(struct net_device *dev_curr, u32 ifindex) { struct net *netns = dev_net(dev_curr); /* Non-redirect use-cases can use ifindex=0 and save ifindex lookup */ if (ifindex == 0) return dev_curr; return dev_get_by_index_rcu(netns, ifindex); } BPF_CALL_5(bpf_skb_check_mtu, struct sk_buff *, skb, u32, ifindex, u32 *, mtu_len, s32, len_diff, u64, flags) { int ret = BPF_MTU_CHK_RET_FRAG_NEEDED; struct net_device *dev = skb->dev; int mtu, dev_len, skb_len; if (unlikely(flags & ~(BPF_MTU_CHK_SEGS))) return -EINVAL; if (unlikely(flags & BPF_MTU_CHK_SEGS && (len_diff || *mtu_len))) return -EINVAL; dev = __dev_via_ifindex(dev, ifindex); if (unlikely(!dev)) return -ENODEV; mtu = READ_ONCE(dev->mtu); dev_len = mtu + dev->hard_header_len; /* If set use *mtu_len as input, L3 as iph->tot_len (like fib_lookup) */ skb_len = *mtu_len ? *mtu_len + dev->hard_header_len : skb->len; skb_len += len_diff; /* minus result pass check */ if (skb_len <= dev_len) { ret = BPF_MTU_CHK_RET_SUCCESS; goto out; } /* At this point, skb->len exceed MTU, but as it include length of all * segments, it can still be below MTU. The SKB can possibly get * re-segmented in transmit path (see validate_xmit_skb). Thus, user * must choose if segs are to be MTU checked. */ if (skb_is_gso(skb)) { ret = BPF_MTU_CHK_RET_SUCCESS; if (flags & BPF_MTU_CHK_SEGS && !skb_gso_validate_network_len(skb, mtu)) ret = BPF_MTU_CHK_RET_SEGS_TOOBIG; } out: *mtu_len = mtu; return ret; } BPF_CALL_5(bpf_xdp_check_mtu, struct xdp_buff *, xdp, u32, ifindex, u32 *, mtu_len, s32, len_diff, u64, flags) { struct net_device *dev = xdp->rxq->dev; int xdp_len = xdp->data_end - xdp->data; int ret = BPF_MTU_CHK_RET_SUCCESS; int mtu, dev_len; /* XDP variant doesn't support multi-buffer segment check (yet) */ if (unlikely(flags)) return -EINVAL; dev = __dev_via_ifindex(dev, ifindex); if (unlikely(!dev)) return -ENODEV; mtu = READ_ONCE(dev->mtu); dev_len = mtu + dev->hard_header_len; /* Use *mtu_len as input, L3 as iph->tot_len (like fib_lookup) */ if (*mtu_len) xdp_len = *mtu_len + dev->hard_header_len; xdp_len += len_diff; /* minus result pass check */ if (xdp_len > dev_len) ret = BPF_MTU_CHK_RET_FRAG_NEEDED; *mtu_len = mtu; return ret; } static const struct bpf_func_proto bpf_skb_check_mtu_proto = { .func = bpf_skb_check_mtu, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_FIXED_SIZE_MEM | MEM_WRITE | MEM_ALIGNED, .arg3_size = sizeof(u32), .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; static const struct bpf_func_proto bpf_xdp_check_mtu_proto = { .func = bpf_xdp_check_mtu, .gpl_only = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_FIXED_SIZE_MEM | MEM_WRITE | MEM_ALIGNED, .arg3_size = sizeof(u32), .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; #if IS_ENABLED(CONFIG_IPV6_SEG6_BPF) static int bpf_push_seg6_encap(struct sk_buff *skb, u32 type, void *hdr, u32 len) { int err; struct ipv6_sr_hdr *srh = (struct ipv6_sr_hdr *)hdr; if (!seg6_validate_srh(srh, len, false)) return -EINVAL; switch (type) { case BPF_LWT_ENCAP_SEG6_INLINE: if (skb->protocol != htons(ETH_P_IPV6)) return -EBADMSG; err = seg6_do_srh_inline(skb, srh); break; case BPF_LWT_ENCAP_SEG6: skb_reset_inner_headers(skb); skb->encapsulation = 1; err = seg6_do_srh_encap(skb, srh, IPPROTO_IPV6); break; default: return -EINVAL; } bpf_compute_data_pointers(skb); if (err) return err; skb_set_transport_header(skb, sizeof(struct ipv6hdr)); return seg6_lookup_nexthop(skb, NULL, 0); } #endif /* CONFIG_IPV6_SEG6_BPF */ #if IS_ENABLED(CONFIG_LWTUNNEL_BPF) static int bpf_push_ip_encap(struct sk_buff *skb, void *hdr, u32 len, bool ingress) { return bpf_lwt_push_ip_encap(skb, hdr, len, ingress); } #endif BPF_CALL_4(bpf_lwt_in_push_encap, struct sk_buff *, skb, u32, type, void *, hdr, u32, len) { switch (type) { #if IS_ENABLED(CONFIG_IPV6_SEG6_BPF) case BPF_LWT_ENCAP_SEG6: case BPF_LWT_ENCAP_SEG6_INLINE: return bpf_push_seg6_encap(skb, type, hdr, len); #endif #if IS_ENABLED(CONFIG_LWTUNNEL_BPF) case BPF_LWT_ENCAP_IP: return bpf_push_ip_encap(skb, hdr, len, true /* ingress */); #endif default: return -EINVAL; } } BPF_CALL_4(bpf_lwt_xmit_push_encap, struct sk_buff *, skb, u32, type, void *, hdr, u32, len) { switch (type) { #if IS_ENABLED(CONFIG_LWTUNNEL_BPF) case BPF_LWT_ENCAP_IP: return bpf_push_ip_encap(skb, hdr, len, false /* egress */); #endif default: return -EINVAL; } } static const struct bpf_func_proto bpf_lwt_in_push_encap_proto = { .func = bpf_lwt_in_push_encap, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg4_type = ARG_CONST_SIZE }; static const struct bpf_func_proto bpf_lwt_xmit_push_encap_proto = { .func = bpf_lwt_xmit_push_encap, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg4_type = ARG_CONST_SIZE }; #if IS_ENABLED(CONFIG_IPV6_SEG6_BPF) BPF_CALL_4(bpf_lwt_seg6_store_bytes, struct sk_buff *, skb, u32, offset, const void *, from, u32, len) { struct seg6_bpf_srh_state *srh_state = this_cpu_ptr(&seg6_bpf_srh_states); struct ipv6_sr_hdr *srh = srh_state->srh; void *srh_tlvs, *srh_end, *ptr; int srhoff = 0; lockdep_assert_held(&srh_state->bh_lock); if (srh == NULL) return -EINVAL; srh_tlvs = (void *)((char *)srh + ((srh->first_segment + 1) << 4)); srh_end = (void *)((char *)srh + sizeof(*srh) + srh_state->hdrlen); ptr = skb->data + offset; if (ptr >= srh_tlvs && ptr + len <= srh_end) srh_state->valid = false; else if (ptr < (void *)&srh->flags || ptr + len > (void *)&srh->segments) return -EFAULT; if (unlikely(bpf_try_make_writable(skb, offset + len))) return -EFAULT; if (ipv6_find_hdr(skb, &srhoff, IPPROTO_ROUTING, NULL, NULL) < 0) return -EINVAL; srh_state->srh = (struct ipv6_sr_hdr *)(skb->data + srhoff); memcpy(skb->data + offset, from, len); return 0; } static const struct bpf_func_proto bpf_lwt_seg6_store_bytes_proto = { .func = bpf_lwt_seg6_store_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg4_type = ARG_CONST_SIZE }; static void bpf_update_srh_state(struct sk_buff *skb) { struct seg6_bpf_srh_state *srh_state = this_cpu_ptr(&seg6_bpf_srh_states); int srhoff = 0; if (ipv6_find_hdr(skb, &srhoff, IPPROTO_ROUTING, NULL, NULL) < 0) { srh_state->srh = NULL; } else { srh_state->srh = (struct ipv6_sr_hdr *)(skb->data + srhoff); srh_state->hdrlen = srh_state->srh->hdrlen << 3; srh_state->valid = true; } } BPF_CALL_4(bpf_lwt_seg6_action, struct sk_buff *, skb, u32, action, void *, param, u32, param_len) { struct seg6_bpf_srh_state *srh_state = this_cpu_ptr(&seg6_bpf_srh_states); int hdroff = 0; int err; lockdep_assert_held(&srh_state->bh_lock); switch (action) { case SEG6_LOCAL_ACTION_END_X: if (!seg6_bpf_has_valid_srh(skb)) return -EBADMSG; if (param_len != sizeof(struct in6_addr)) return -EINVAL; return seg6_lookup_nexthop(skb, (struct in6_addr *)param, 0); case SEG6_LOCAL_ACTION_END_T: if (!seg6_bpf_has_valid_srh(skb)) return -EBADMSG; if (param_len != sizeof(int)) return -EINVAL; return seg6_lookup_nexthop(skb, NULL, *(int *)param); case SEG6_LOCAL_ACTION_END_DT6: if (!seg6_bpf_has_valid_srh(skb)) return -EBADMSG; if (param_len != sizeof(int)) return -EINVAL; if (ipv6_find_hdr(skb, &hdroff, IPPROTO_IPV6, NULL, NULL) < 0) return -EBADMSG; if (!pskb_pull(skb, hdroff)) return -EBADMSG; skb_postpull_rcsum(skb, skb_network_header(skb), hdroff); skb_reset_network_header(skb); skb_reset_transport_header(skb); skb->encapsulation = 0; bpf_compute_data_pointers(skb); bpf_update_srh_state(skb); return seg6_lookup_nexthop(skb, NULL, *(int *)param); case SEG6_LOCAL_ACTION_END_B6: if (srh_state->srh && !seg6_bpf_has_valid_srh(skb)) return -EBADMSG; err = bpf_push_seg6_encap(skb, BPF_LWT_ENCAP_SEG6_INLINE, param, param_len); if (!err) bpf_update_srh_state(skb); return err; case SEG6_LOCAL_ACTION_END_B6_ENCAP: if (srh_state->srh && !seg6_bpf_has_valid_srh(skb)) return -EBADMSG; err = bpf_push_seg6_encap(skb, BPF_LWT_ENCAP_SEG6, param, param_len); if (!err) bpf_update_srh_state(skb); return err; default: return -EINVAL; } } static const struct bpf_func_proto bpf_lwt_seg6_action_proto = { .func = bpf_lwt_seg6_action, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg4_type = ARG_CONST_SIZE }; BPF_CALL_3(bpf_lwt_seg6_adjust_srh, struct sk_buff *, skb, u32, offset, s32, len) { struct seg6_bpf_srh_state *srh_state = this_cpu_ptr(&seg6_bpf_srh_states); struct ipv6_sr_hdr *srh = srh_state->srh; void *srh_end, *srh_tlvs, *ptr; struct ipv6hdr *hdr; int srhoff = 0; int ret; lockdep_assert_held(&srh_state->bh_lock); if (unlikely(srh == NULL)) return -EINVAL; srh_tlvs = (void *)((unsigned char *)srh + sizeof(*srh) + ((srh->first_segment + 1) << 4)); srh_end = (void *)((unsigned char *)srh + sizeof(*srh) + srh_state->hdrlen); ptr = skb->data + offset; if (unlikely(ptr < srh_tlvs || ptr > srh_end)) return -EFAULT; if (unlikely(len < 0 && (void *)((char *)ptr - len) > srh_end)) return -EFAULT; if (len > 0) { ret = skb_cow_head(skb, len); if (unlikely(ret < 0)) return ret; ret = bpf_skb_net_hdr_push(skb, offset, len); } else { ret = bpf_skb_net_hdr_pop(skb, offset, -1 * len); } bpf_compute_data_pointers(skb); if (unlikely(ret < 0)) return ret; hdr = (struct ipv6hdr *)skb->data; hdr->payload_len = htons(skb->len - sizeof(struct ipv6hdr)); if (ipv6_find_hdr(skb, &srhoff, IPPROTO_ROUTING, NULL, NULL) < 0) return -EINVAL; srh_state->srh = (struct ipv6_sr_hdr *)(skb->data + srhoff); srh_state->hdrlen += len; srh_state->valid = false; return 0; } static const struct bpf_func_proto bpf_lwt_seg6_adjust_srh_proto = { .func = bpf_lwt_seg6_adjust_srh, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; #endif /* CONFIG_IPV6_SEG6_BPF */ #ifdef CONFIG_INET static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple, int dif, int sdif, u8 family, u8 proto) { struct inet_hashinfo *hinfo = net->ipv4.tcp_death_row.hashinfo; bool refcounted = false; struct sock *sk = NULL; if (family == AF_INET) { __be32 src4 = tuple->ipv4.saddr; __be32 dst4 = tuple->ipv4.daddr; if (proto == IPPROTO_TCP) sk = __inet_lookup(net, hinfo, NULL, 0, src4, tuple->ipv4.sport, dst4, tuple->ipv4.dport, dif, sdif, &refcounted); else sk = __udp4_lib_lookup(net, src4, tuple->ipv4.sport, dst4, tuple->ipv4.dport, dif, sdif, net->ipv4.udp_table, NULL); #if IS_ENABLED(CONFIG_IPV6) } else { struct in6_addr *src6 = (struct in6_addr *)&tuple->ipv6.saddr; struct in6_addr *dst6 = (struct in6_addr *)&tuple->ipv6.daddr; if (proto == IPPROTO_TCP) sk = __inet6_lookup(net, hinfo, NULL, 0, src6, tuple->ipv6.sport, dst6, ntohs(tuple->ipv6.dport), dif, sdif, &refcounted); else if (likely(ipv6_bpf_stub)) sk = ipv6_bpf_stub->udp6_lib_lookup(net, src6, tuple->ipv6.sport, dst6, tuple->ipv6.dport, dif, sdif, net->ipv4.udp_table, NULL); #endif } if (unlikely(sk && !refcounted && !sock_flag(sk, SOCK_RCU_FREE))) { WARN_ONCE(1, "Found non-RCU, unreferenced socket!"); sk = NULL; } return sk; } /* bpf_skc_lookup performs the core lookup for different types of sockets, * taking a reference on the socket if it doesn't have the flag SOCK_RCU_FREE. */ static struct sock * __bpf_skc_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len, struct net *caller_net, u32 ifindex, u8 proto, u64 netns_id, u64 flags, int sdif) { struct sock *sk = NULL; struct net *net; u8 family; if (len == sizeof(tuple->ipv4)) family = AF_INET; else if (len == sizeof(tuple->ipv6)) family = AF_INET6; else return NULL; if (unlikely(flags || !((s32)netns_id < 0 || netns_id <= S32_MAX))) goto out; if (sdif < 0) { if (family == AF_INET) sdif = inet_sdif(skb); else sdif = inet6_sdif(skb); } if ((s32)netns_id < 0) { net = caller_net; sk = sk_lookup(net, tuple, ifindex, sdif, family, proto); } else { net = get_net_ns_by_id(caller_net, netns_id); if (unlikely(!net)) goto out; sk = sk_lookup(net, tuple, ifindex, sdif, family, proto); put_net(net); } out: return sk; } static struct sock * __bpf_sk_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len, struct net *caller_net, u32 ifindex, u8 proto, u64 netns_id, u64 flags, int sdif) { struct sock *sk = __bpf_skc_lookup(skb, tuple, len, caller_net, ifindex, proto, netns_id, flags, sdif); if (sk) { struct sock *sk2 = sk_to_full_sk(sk); /* sk_to_full_sk() may return (sk)->rsk_listener, so make sure the original sk * sock refcnt is decremented to prevent a request_sock leak. */ if (sk2 != sk) { sock_gen_put(sk); /* Ensure there is no need to bump sk2 refcnt */ if (unlikely(sk2 && !sock_flag(sk2, SOCK_RCU_FREE))) { WARN_ONCE(1, "Found non-RCU, unreferenced socket!"); return NULL; } sk = sk2; } } return sk; } static struct sock * bpf_skc_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len, u8 proto, u64 netns_id, u64 flags) { struct net *caller_net; int ifindex; if (skb->dev) { caller_net = dev_net(skb->dev); ifindex = skb->dev->ifindex; } else { caller_net = sock_net(skb->sk); ifindex = 0; } return __bpf_skc_lookup(skb, tuple, len, caller_net, ifindex, proto, netns_id, flags, -1); } static struct sock * bpf_sk_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len, u8 proto, u64 netns_id, u64 flags) { struct sock *sk = bpf_skc_lookup(skb, tuple, len, proto, netns_id, flags); if (sk) { struct sock *sk2 = sk_to_full_sk(sk); /* sk_to_full_sk() may return (sk)->rsk_listener, so make sure the original sk * sock refcnt is decremented to prevent a request_sock leak. */ if (sk2 != sk) { sock_gen_put(sk); /* Ensure there is no need to bump sk2 refcnt */ if (unlikely(sk2 && !sock_flag(sk2, SOCK_RCU_FREE))) { WARN_ONCE(1, "Found non-RCU, unreferenced socket!"); return NULL; } sk = sk2; } } return sk; } BPF_CALL_5(bpf_skc_lookup_tcp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { return (unsigned long)bpf_skc_lookup(skb, tuple, len, IPPROTO_TCP, netns_id, flags); } static const struct bpf_func_proto bpf_skc_lookup_tcp_proto = { .func = bpf_skc_lookup_tcp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCK_COMMON_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_sk_lookup_tcp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { return (unsigned long)bpf_sk_lookup(skb, tuple, len, IPPROTO_TCP, netns_id, flags); } static const struct bpf_func_proto bpf_sk_lookup_tcp_proto = { .func = bpf_sk_lookup_tcp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_sk_lookup_udp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { return (unsigned long)bpf_sk_lookup(skb, tuple, len, IPPROTO_UDP, netns_id, flags); } static const struct bpf_func_proto bpf_sk_lookup_udp_proto = { .func = bpf_sk_lookup_udp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_tc_skc_lookup_tcp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { struct net_device *dev = skb->dev; int ifindex = dev->ifindex, sdif = dev_sdif(dev); struct net *caller_net = dev_net(dev); return (unsigned long)__bpf_skc_lookup(skb, tuple, len, caller_net, ifindex, IPPROTO_TCP, netns_id, flags, sdif); } static const struct bpf_func_proto bpf_tc_skc_lookup_tcp_proto = { .func = bpf_tc_skc_lookup_tcp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCK_COMMON_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_tc_sk_lookup_tcp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { struct net_device *dev = skb->dev; int ifindex = dev->ifindex, sdif = dev_sdif(dev); struct net *caller_net = dev_net(dev); return (unsigned long)__bpf_sk_lookup(skb, tuple, len, caller_net, ifindex, IPPROTO_TCP, netns_id, flags, sdif); } static const struct bpf_func_proto bpf_tc_sk_lookup_tcp_proto = { .func = bpf_tc_sk_lookup_tcp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_tc_sk_lookup_udp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { struct net_device *dev = skb->dev; int ifindex = dev->ifindex, sdif = dev_sdif(dev); struct net *caller_net = dev_net(dev); return (unsigned long)__bpf_sk_lookup(skb, tuple, len, caller_net, ifindex, IPPROTO_UDP, netns_id, flags, sdif); } static const struct bpf_func_proto bpf_tc_sk_lookup_udp_proto = { .func = bpf_tc_sk_lookup_udp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_1(bpf_sk_release, struct sock *, sk) { if (sk && sk_is_refcounted(sk)) sock_gen_put(sk); return 0; } static const struct bpf_func_proto bpf_sk_release_proto = { .func = bpf_sk_release, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON | OBJ_RELEASE, }; BPF_CALL_5(bpf_xdp_sk_lookup_udp, struct xdp_buff *, ctx, struct bpf_sock_tuple *, tuple, u32, len, u32, netns_id, u64, flags) { struct net_device *dev = ctx->rxq->dev; int ifindex = dev->ifindex, sdif = dev_sdif(dev); struct net *caller_net = dev_net(dev); return (unsigned long)__bpf_sk_lookup(NULL, tuple, len, caller_net, ifindex, IPPROTO_UDP, netns_id, flags, sdif); } static const struct bpf_func_proto bpf_xdp_sk_lookup_udp_proto = { .func = bpf_xdp_sk_lookup_udp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_xdp_skc_lookup_tcp, struct xdp_buff *, ctx, struct bpf_sock_tuple *, tuple, u32, len, u32, netns_id, u64, flags) { struct net_device *dev = ctx->rxq->dev; int ifindex = dev->ifindex, sdif = dev_sdif(dev); struct net *caller_net = dev_net(dev); return (unsigned long)__bpf_skc_lookup(NULL, tuple, len, caller_net, ifindex, IPPROTO_TCP, netns_id, flags, sdif); } static const struct bpf_func_proto bpf_xdp_skc_lookup_tcp_proto = { .func = bpf_xdp_skc_lookup_tcp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCK_COMMON_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_xdp_sk_lookup_tcp, struct xdp_buff *, ctx, struct bpf_sock_tuple *, tuple, u32, len, u32, netns_id, u64, flags) { struct net_device *dev = ctx->rxq->dev; int ifindex = dev->ifindex, sdif = dev_sdif(dev); struct net *caller_net = dev_net(dev); return (unsigned long)__bpf_sk_lookup(NULL, tuple, len, caller_net, ifindex, IPPROTO_TCP, netns_id, flags, sdif); } static const struct bpf_func_proto bpf_xdp_sk_lookup_tcp_proto = { .func = bpf_xdp_sk_lookup_tcp, .gpl_only = false, .pkt_access = true, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_sock_addr_skc_lookup_tcp, struct bpf_sock_addr_kern *, ctx, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { return (unsigned long)__bpf_skc_lookup(NULL, tuple, len, sock_net(ctx->sk), 0, IPPROTO_TCP, netns_id, flags, -1); } static const struct bpf_func_proto bpf_sock_addr_skc_lookup_tcp_proto = { .func = bpf_sock_addr_skc_lookup_tcp, .gpl_only = false, .ret_type = RET_PTR_TO_SOCK_COMMON_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_sock_addr_sk_lookup_tcp, struct bpf_sock_addr_kern *, ctx, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { return (unsigned long)__bpf_sk_lookup(NULL, tuple, len, sock_net(ctx->sk), 0, IPPROTO_TCP, netns_id, flags, -1); } static const struct bpf_func_proto bpf_sock_addr_sk_lookup_tcp_proto = { .func = bpf_sock_addr_sk_lookup_tcp, .gpl_only = false, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; BPF_CALL_5(bpf_sock_addr_sk_lookup_udp, struct bpf_sock_addr_kern *, ctx, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { return (unsigned long)__bpf_sk_lookup(NULL, tuple, len, sock_net(ctx->sk), 0, IPPROTO_UDP, netns_id, flags, -1); } static const struct bpf_func_proto bpf_sock_addr_sk_lookup_udp_proto = { .func = bpf_sock_addr_sk_lookup_udp, .gpl_only = false, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE_OR_ZERO, .arg4_type = ARG_ANYTHING, .arg5_type = ARG_ANYTHING, }; bool bpf_tcp_sock_is_valid_access(int off, int size, enum bpf_access_type type, struct bpf_insn_access_aux *info) { if (off < 0 || off >= offsetofend(struct bpf_tcp_sock, icsk_retransmits)) return false; if (off % size != 0) return false; switch (off) { case offsetof(struct bpf_tcp_sock, bytes_received): case offsetof(struct bpf_tcp_sock, bytes_acked): return size == sizeof(__u64); default: return size == sizeof(__u32); } } u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; #define BPF_TCP_SOCK_GET_COMMON(FIELD) \ do { \ BUILD_BUG_ON(sizeof_field(struct tcp_sock, FIELD) > \ sizeof_field(struct bpf_tcp_sock, FIELD)); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct tcp_sock, FIELD),\ si->dst_reg, si->src_reg, \ offsetof(struct tcp_sock, FIELD)); \ } while (0) #define BPF_INET_SOCK_GET_COMMON(FIELD) \ do { \ BUILD_BUG_ON(sizeof_field(struct inet_connection_sock, \ FIELD) > \ sizeof_field(struct bpf_tcp_sock, FIELD)); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( \ struct inet_connection_sock, \ FIELD), \ si->dst_reg, si->src_reg, \ offsetof( \ struct inet_connection_sock, \ FIELD)); \ } while (0) BTF_TYPE_EMIT(struct bpf_tcp_sock); switch (si->off) { case offsetof(struct bpf_tcp_sock, rtt_min): BUILD_BUG_ON(sizeof_field(struct tcp_sock, rtt_min) != sizeof(struct minmax)); BUILD_BUG_ON(sizeof(struct minmax) < sizeof(struct minmax_sample)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, offsetof(struct tcp_sock, rtt_min) + offsetof(struct minmax_sample, v)); break; case offsetof(struct bpf_tcp_sock, snd_cwnd): BPF_TCP_SOCK_GET_COMMON(snd_cwnd); break; case offsetof(struct bpf_tcp_sock, srtt_us): BPF_TCP_SOCK_GET_COMMON(srtt_us); break; case offsetof(struct bpf_tcp_sock, snd_ssthresh): BPF_TCP_SOCK_GET_COMMON(snd_ssthresh); break; case offsetof(struct bpf_tcp_sock, rcv_nxt): BPF_TCP_SOCK_GET_COMMON(rcv_nxt); break; case offsetof(struct bpf_tcp_sock, snd_nxt): BPF_TCP_SOCK_GET_COMMON(snd_nxt); break; case offsetof(struct bpf_tcp_sock, snd_una): BPF_TCP_SOCK_GET_COMMON(snd_una); break; case offsetof(struct bpf_tcp_sock, mss_cache): BPF_TCP_SOCK_GET_COMMON(mss_cache); break; case offsetof(struct bpf_tcp_sock, ecn_flags): BPF_TCP_SOCK_GET_COMMON(ecn_flags); break; case offsetof(struct bpf_tcp_sock, rate_delivered): BPF_TCP_SOCK_GET_COMMON(rate_delivered); break; case offsetof(struct bpf_tcp_sock, rate_interval_us): BPF_TCP_SOCK_GET_COMMON(rate_interval_us); break; case offsetof(struct bpf_tcp_sock, packets_out): BPF_TCP_SOCK_GET_COMMON(packets_out); break; case offsetof(struct bpf_tcp_sock, retrans_out): BPF_TCP_SOCK_GET_COMMON(retrans_out); break; case offsetof(struct bpf_tcp_sock, total_retrans): BPF_TCP_SOCK_GET_COMMON(total_retrans); break; case offsetof(struct bpf_tcp_sock, segs_in): BPF_TCP_SOCK_GET_COMMON(segs_in); break; case offsetof(struct bpf_tcp_sock, data_segs_in): BPF_TCP_SOCK_GET_COMMON(data_segs_in); break; case offsetof(struct bpf_tcp_sock, segs_out): BPF_TCP_SOCK_GET_COMMON(segs_out); break; case offsetof(struct bpf_tcp_sock, data_segs_out): BPF_TCP_SOCK_GET_COMMON(data_segs_out); break; case offsetof(struct bpf_tcp_sock, lost_out): BPF_TCP_SOCK_GET_COMMON(lost_out); break; case offsetof(struct bpf_tcp_sock, sacked_out): BPF_TCP_SOCK_GET_COMMON(sacked_out); break; case offsetof(struct bpf_tcp_sock, bytes_received): BPF_TCP_SOCK_GET_COMMON(bytes_received); break; case offsetof(struct bpf_tcp_sock, bytes_acked): BPF_TCP_SOCK_GET_COMMON(bytes_acked); break; case offsetof(struct bpf_tcp_sock, dsack_dups): BPF_TCP_SOCK_GET_COMMON(dsack_dups); break; case offsetof(struct bpf_tcp_sock, delivered): BPF_TCP_SOCK_GET_COMMON(delivered); break; case offsetof(struct bpf_tcp_sock, delivered_ce): BPF_TCP_SOCK_GET_COMMON(delivered_ce); break; case offsetof(struct bpf_tcp_sock, icsk_retransmits): BPF_INET_SOCK_GET_COMMON(icsk_retransmits); break; } return insn - insn_buf; } BPF_CALL_1(bpf_tcp_sock, struct sock *, sk) { if (sk_fullsock(sk) && sk->sk_protocol == IPPROTO_TCP) return (unsigned long)sk; return (unsigned long)NULL; } const struct bpf_func_proto bpf_tcp_sock_proto = { .func = bpf_tcp_sock, .gpl_only = false, .ret_type = RET_PTR_TO_TCP_SOCK_OR_NULL, .arg1_type = ARG_PTR_TO_SOCK_COMMON, }; BPF_CALL_1(bpf_get_listener_sock, struct sock *, sk) { sk = sk_to_full_sk(sk); if (sk && sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_RCU_FREE)) return (unsigned long)sk; return (unsigned long)NULL; } static const struct bpf_func_proto bpf_get_listener_sock_proto = { .func = bpf_get_listener_sock, .gpl_only = false, .ret_type = RET_PTR_TO_SOCKET_OR_NULL, .arg1_type = ARG_PTR_TO_SOCK_COMMON, }; BPF_CALL_1(bpf_skb_ecn_set_ce, struct sk_buff *, skb) { unsigned int iphdr_len; switch (skb_protocol(skb, true)) { case cpu_to_be16(ETH_P_IP): iphdr_len = sizeof(struct iphdr); break; case cpu_to_be16(ETH_P_IPV6): iphdr_len = sizeof(struct ipv6hdr); break; default: return 0; } if (skb_headlen(skb) < iphdr_len) return 0; if (skb_cloned(skb) && !skb_clone_writable(skb, iphdr_len)) return 0; return INET_ECN_set_ce(skb); } bool bpf_xdp_sock_is_valid_access(int off, int size, enum bpf_access_type type, struct bpf_insn_access_aux *info) { if (off < 0 || off >= offsetofend(struct bpf_xdp_sock, queue_id)) return false; if (off % size != 0) return false; switch (off) { default: return size == sizeof(__u32); } } u32 bpf_xdp_sock_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; #define BPF_XDP_SOCK_GET(FIELD) \ do { \ BUILD_BUG_ON(sizeof_field(struct xdp_sock, FIELD) > \ sizeof_field(struct bpf_xdp_sock, FIELD)); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_sock, FIELD),\ si->dst_reg, si->src_reg, \ offsetof(struct xdp_sock, FIELD)); \ } while (0) switch (si->off) { case offsetof(struct bpf_xdp_sock, queue_id): BPF_XDP_SOCK_GET(queue_id); break; } return insn - insn_buf; } static const struct bpf_func_proto bpf_skb_ecn_set_ce_proto = { .func = bpf_skb_ecn_set_ce, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; BPF_CALL_5(bpf_tcp_check_syncookie, struct sock *, sk, void *, iph, u32, iph_len, struct tcphdr *, th, u32, th_len) { #ifdef CONFIG_SYN_COOKIES int ret; if (unlikely(!sk || th_len < sizeof(*th))) return -EINVAL; /* sk_listener() allows TCP_NEW_SYN_RECV, which makes no sense here. */ if (sk->sk_protocol != IPPROTO_TCP || sk->sk_state != TCP_LISTEN) return -EINVAL; if (!READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_syncookies)) return -EINVAL; if (!th->ack || th->rst || th->syn) return -ENOENT; if (unlikely(iph_len < sizeof(struct iphdr))) return -EINVAL; if (tcp_synq_no_recent_overflow(sk)) return -ENOENT; /* Both struct iphdr and struct ipv6hdr have the version field at the * same offset so we can cast to the shorter header (struct iphdr). */ switch (((struct iphdr *)iph)->version) { case 4: if (sk->sk_family == AF_INET6 && ipv6_only_sock(sk)) return -EINVAL; ret = __cookie_v4_check((struct iphdr *)iph, th); break; #if IS_BUILTIN(CONFIG_IPV6) case 6: if (unlikely(iph_len < sizeof(struct ipv6hdr))) return -EINVAL; if (sk->sk_family != AF_INET6) return -EINVAL; ret = __cookie_v6_check((struct ipv6hdr *)iph, th); break; #endif /* CONFIG_IPV6 */ default: return -EPROTONOSUPPORT; } if (ret > 0) return 0; return -ENOENT; #else return -ENOTSUPP; #endif } static const struct bpf_func_proto bpf_tcp_check_syncookie_proto = { .func = bpf_tcp_check_syncookie, .gpl_only = true, .pkt_access = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_5(bpf_tcp_gen_syncookie, struct sock *, sk, void *, iph, u32, iph_len, struct tcphdr *, th, u32, th_len) { #ifdef CONFIG_SYN_COOKIES u32 cookie; u16 mss; if (unlikely(!sk || th_len < sizeof(*th) || th_len != th->doff * 4)) return -EINVAL; if (sk->sk_protocol != IPPROTO_TCP || sk->sk_state != TCP_LISTEN) return -EINVAL; if (!READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_syncookies)) return -ENOENT; if (!th->syn || th->ack || th->fin || th->rst) return -EINVAL; if (unlikely(iph_len < sizeof(struct iphdr))) return -EINVAL; /* Both struct iphdr and struct ipv6hdr have the version field at the * same offset so we can cast to the shorter header (struct iphdr). */ switch (((struct iphdr *)iph)->version) { case 4: if (sk->sk_family == AF_INET6 && ipv6_only_sock(sk)) return -EINVAL; mss = tcp_v4_get_syncookie(sk, iph, th, &cookie); break; #if IS_BUILTIN(CONFIG_IPV6) case 6: if (unlikely(iph_len < sizeof(struct ipv6hdr))) return -EINVAL; if (sk->sk_family != AF_INET6) return -EINVAL; mss = tcp_v6_get_syncookie(sk, iph, th, &cookie); break; #endif /* CONFIG_IPV6 */ default: return -EPROTONOSUPPORT; } if (mss == 0) return -ENOENT; return cookie | ((u64)mss << 32); #else return -EOPNOTSUPP; #endif /* CONFIG_SYN_COOKIES */ } static const struct bpf_func_proto bpf_tcp_gen_syncookie_proto = { .func = bpf_tcp_gen_syncookie, .gpl_only = true, /* __cookie_v*_init_sequence() is GPL */ .pkt_access = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg5_type = ARG_CONST_SIZE, }; BPF_CALL_3(bpf_sk_assign, struct sk_buff *, skb, struct sock *, sk, u64, flags) { if (!sk || flags != 0) return -EINVAL; if (!skb_at_tc_ingress(skb)) return -EOPNOTSUPP; if (unlikely(dev_net(skb->dev) != sock_net(sk))) return -ENETUNREACH; if (sk_unhashed(sk)) return -EOPNOTSUPP; if (sk_is_refcounted(sk) && unlikely(!refcount_inc_not_zero(&sk->sk_refcnt))) return -ENOENT; skb_orphan(skb); skb->sk = sk; skb->destructor = sock_pfree; return 0; } static const struct bpf_func_proto bpf_sk_assign_proto = { .func = bpf_sk_assign, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .arg3_type = ARG_ANYTHING, }; static const u8 *bpf_search_tcp_opt(const u8 *op, const u8 *opend, u8 search_kind, const u8 *magic, u8 magic_len, bool *eol) { u8 kind, kind_len; *eol = false; while (op < opend) { kind = op[0]; if (kind == TCPOPT_EOL) { *eol = true; return ERR_PTR(-ENOMSG); } else if (kind == TCPOPT_NOP) { op++; continue; } if (opend - op < 2 || opend - op < op[1] || op[1] < 2) /* Something is wrong in the received header. * Follow the TCP stack's tcp_parse_options() * and just bail here. */ return ERR_PTR(-EFAULT); kind_len = op[1]; if (search_kind == kind) { if (!magic_len) return op; if (magic_len > kind_len - 2) return ERR_PTR(-ENOMSG); if (!memcmp(&op[2], magic, magic_len)) return op; } op += kind_len; } return ERR_PTR(-ENOMSG); } BPF_CALL_4(bpf_sock_ops_load_hdr_opt, struct bpf_sock_ops_kern *, bpf_sock, void *, search_res, u32, len, u64, flags) { bool eol, load_syn = flags & BPF_LOAD_HDR_OPT_TCP_SYN; const u8 *op, *opend, *magic, *search = search_res; u8 search_kind, search_len, copy_len, magic_len; int ret; if (!is_locked_tcp_sock_ops(bpf_sock)) return -EOPNOTSUPP; /* 2 byte is the minimal option len except TCPOPT_NOP and * TCPOPT_EOL which are useless for the bpf prog to learn * and this helper disallow loading them also. */ if (len < 2 || flags & ~BPF_LOAD_HDR_OPT_TCP_SYN) return -EINVAL; search_kind = search[0]; search_len = search[1]; if (search_len > len || search_kind == TCPOPT_NOP || search_kind == TCPOPT_EOL) return -EINVAL; if (search_kind == TCPOPT_EXP || search_kind == 253) { /* 16 or 32 bit magic. +2 for kind and kind length */ if (search_len != 4 && search_len != 6) return -EINVAL; magic = &search[2]; magic_len = search_len - 2; } else { if (search_len) return -EINVAL; magic = NULL; magic_len = 0; } if (load_syn) { ret = bpf_sock_ops_get_syn(bpf_sock, TCP_BPF_SYN, &op); if (ret < 0) return ret; opend = op + ret; op += sizeof(struct tcphdr); } else { if (!bpf_sock->skb || bpf_sock->op == BPF_SOCK_OPS_HDR_OPT_LEN_CB) /* This bpf_sock->op cannot call this helper */ return -EPERM; opend = bpf_sock->skb_data_end; op = bpf_sock->skb->data + sizeof(struct tcphdr); } op = bpf_search_tcp_opt(op, opend, search_kind, magic, magic_len, &eol); if (IS_ERR(op)) return PTR_ERR(op); copy_len = op[1]; ret = copy_len; if (copy_len > len) { ret = -ENOSPC; copy_len = len; } memcpy(search_res, op, copy_len); return ret; } static const struct bpf_func_proto bpf_sock_ops_load_hdr_opt_proto = { .func = bpf_sock_ops_load_hdr_opt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_WRITE, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_ANYTHING, }; BPF_CALL_4(bpf_sock_ops_store_hdr_opt, struct bpf_sock_ops_kern *, bpf_sock, const void *, from, u32, len, u64, flags) { u8 new_kind, new_kind_len, magic_len = 0, *opend; const u8 *op, *new_op, *magic = NULL; struct sk_buff *skb; bool eol; if (bpf_sock->op != BPF_SOCK_OPS_WRITE_HDR_OPT_CB) return -EPERM; if (len < 2 || flags) return -EINVAL; new_op = from; new_kind = new_op[0]; new_kind_len = new_op[1]; if (new_kind_len > len || new_kind == TCPOPT_NOP || new_kind == TCPOPT_EOL) return -EINVAL; if (new_kind_len > bpf_sock->remaining_opt_len) return -ENOSPC; /* 253 is another experimental kind */ if (new_kind == TCPOPT_EXP || new_kind == 253) { if (new_kind_len < 4) return -EINVAL; /* Match for the 2 byte magic also. * RFC 6994: the magic could be 2 or 4 bytes. * Hence, matching by 2 byte only is on the * conservative side but it is the right * thing to do for the 'search-for-duplication' * purpose. */ magic = &new_op[2]; magic_len = 2; } /* Check for duplication */ skb = bpf_sock->skb; op = skb->data + sizeof(struct tcphdr); opend = bpf_sock->skb_data_end; op = bpf_search_tcp_opt(op, opend, new_kind, magic, magic_len, &eol); if (!IS_ERR(op)) return -EEXIST; if (PTR_ERR(op) != -ENOMSG) return PTR_ERR(op); if (eol) /* The option has been ended. Treat it as no more * header option can be written. */ return -ENOSPC; /* No duplication found. Store the header option. */ memcpy(opend, from, new_kind_len); bpf_sock->remaining_opt_len -= new_kind_len; bpf_sock->skb_data_end += new_kind_len; return 0; } static const struct bpf_func_proto bpf_sock_ops_store_hdr_opt_proto = { .func = bpf_sock_ops_store_hdr_opt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, .arg3_type = ARG_CONST_SIZE, .arg4_type = ARG_ANYTHING, }; BPF_CALL_3(bpf_sock_ops_reserve_hdr_opt, struct bpf_sock_ops_kern *, bpf_sock, u32, len, u64, flags) { if (bpf_sock->op != BPF_SOCK_OPS_HDR_OPT_LEN_CB) return -EPERM; if (flags || len < 2) return -EINVAL; if (len > bpf_sock->remaining_opt_len) return -ENOSPC; bpf_sock->remaining_opt_len -= len; return 0; } static const struct bpf_func_proto bpf_sock_ops_reserve_hdr_opt_proto = { .func = bpf_sock_ops_reserve_hdr_opt, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; BPF_CALL_3(bpf_skb_set_tstamp, struct sk_buff *, skb, u64, tstamp, u32, tstamp_type) { /* skb_clear_delivery_time() is done for inet protocol */ if (skb->protocol != htons(ETH_P_IP) && skb->protocol != htons(ETH_P_IPV6)) return -EOPNOTSUPP; switch (tstamp_type) { case BPF_SKB_CLOCK_REALTIME: skb->tstamp = tstamp; skb->tstamp_type = SKB_CLOCK_REALTIME; break; case BPF_SKB_CLOCK_MONOTONIC: if (!tstamp) return -EINVAL; skb->tstamp = tstamp; skb->tstamp_type = SKB_CLOCK_MONOTONIC; break; case BPF_SKB_CLOCK_TAI: if (!tstamp) return -EINVAL; skb->tstamp = tstamp; skb->tstamp_type = SKB_CLOCK_TAI; break; default: return -EINVAL; } return 0; } static const struct bpf_func_proto bpf_skb_set_tstamp_proto = { .func = bpf_skb_set_tstamp, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; #ifdef CONFIG_SYN_COOKIES BPF_CALL_3(bpf_tcp_raw_gen_syncookie_ipv4, struct iphdr *, iph, struct tcphdr *, th, u32, th_len) { u32 cookie; u16 mss; if (unlikely(th_len < sizeof(*th) || th_len != th->doff * 4)) return -EINVAL; mss = tcp_parse_mss_option(th, 0) ?: TCP_MSS_DEFAULT; cookie = __cookie_v4_init_sequence(iph, th, &mss); return cookie | ((u64)mss << 32); } static const struct bpf_func_proto bpf_tcp_raw_gen_syncookie_ipv4_proto = { .func = bpf_tcp_raw_gen_syncookie_ipv4, .gpl_only = true, /* __cookie_v4_init_sequence() is GPL */ .pkt_access = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_FIXED_SIZE_MEM, .arg1_size = sizeof(struct iphdr), .arg2_type = ARG_PTR_TO_MEM, .arg3_type = ARG_CONST_SIZE_OR_ZERO, }; BPF_CALL_3(bpf_tcp_raw_gen_syncookie_ipv6, struct ipv6hdr *, iph, struct tcphdr *, th, u32, th_len) { #if IS_BUILTIN(CONFIG_IPV6) const u16 mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - sizeof(struct ipv6hdr); u32 cookie; u16 mss; if (unlikely(th_len < sizeof(*th) || th_len != th->doff * 4)) return -EINVAL; mss = tcp_parse_mss_option(th, 0) ?: mss_clamp; cookie = __cookie_v6_init_sequence(iph, th, &mss); return cookie | ((u64)mss << 32); #else return -EPROTONOSUPPORT; #endif } static const struct bpf_func_proto bpf_tcp_raw_gen_syncookie_ipv6_proto = { .func = bpf_tcp_raw_gen_syncookie_ipv6, .gpl_only = true, /* __cookie_v6_init_sequence() is GPL */ .pkt_access = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_FIXED_SIZE_MEM, .arg1_size = sizeof(struct ipv6hdr), .arg2_type = ARG_PTR_TO_MEM, .arg3_type = ARG_CONST_SIZE_OR_ZERO, }; BPF_CALL_2(bpf_tcp_raw_check_syncookie_ipv4, struct iphdr *, iph, struct tcphdr *, th) { if (__cookie_v4_check(iph, th) > 0) return 0; return -EACCES; } static const struct bpf_func_proto bpf_tcp_raw_check_syncookie_ipv4_proto = { .func = bpf_tcp_raw_check_syncookie_ipv4, .gpl_only = true, /* __cookie_v4_check is GPL */ .pkt_access = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_FIXED_SIZE_MEM, .arg1_size = sizeof(struct iphdr), .arg2_type = ARG_PTR_TO_FIXED_SIZE_MEM, .arg2_size = sizeof(struct tcphdr), }; BPF_CALL_2(bpf_tcp_raw_check_syncookie_ipv6, struct ipv6hdr *, iph, struct tcphdr *, th) { #if IS_BUILTIN(CONFIG_IPV6) if (__cookie_v6_check(iph, th) > 0) return 0; return -EACCES; #else return -EPROTONOSUPPORT; #endif } static const struct bpf_func_proto bpf_tcp_raw_check_syncookie_ipv6_proto = { .func = bpf_tcp_raw_check_syncookie_ipv6, .gpl_only = true, /* __cookie_v6_check is GPL */ .pkt_access = true, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_FIXED_SIZE_MEM, .arg1_size = sizeof(struct ipv6hdr), .arg2_type = ARG_PTR_TO_FIXED_SIZE_MEM, .arg2_size = sizeof(struct tcphdr), }; #endif /* CONFIG_SYN_COOKIES */ #endif /* CONFIG_INET */ bool bpf_helper_changes_pkt_data(enum bpf_func_id func_id) { switch (func_id) { case BPF_FUNC_clone_redirect: case BPF_FUNC_l3_csum_replace: case BPF_FUNC_l4_csum_replace: case BPF_FUNC_lwt_push_encap: case BPF_FUNC_lwt_seg6_action: case BPF_FUNC_lwt_seg6_adjust_srh: case BPF_FUNC_lwt_seg6_store_bytes: case BPF_FUNC_msg_pop_data: case BPF_FUNC_msg_pull_data: case BPF_FUNC_msg_push_data: case BPF_FUNC_skb_adjust_room: case BPF_FUNC_skb_change_head: case BPF_FUNC_skb_change_proto: case BPF_FUNC_skb_change_tail: case BPF_FUNC_skb_pull_data: case BPF_FUNC_skb_store_bytes: case BPF_FUNC_skb_vlan_pop: case BPF_FUNC_skb_vlan_push: case BPF_FUNC_store_hdr_opt: case BPF_FUNC_xdp_adjust_head: case BPF_FUNC_xdp_adjust_meta: case BPF_FUNC_xdp_adjust_tail: /* tail-called program could call any of the above */ case BPF_FUNC_tail_call: return true; default: return false; } } const struct bpf_func_proto bpf_event_output_data_proto __weak; const struct bpf_func_proto bpf_sk_storage_get_cg_sock_proto __weak; static const struct bpf_func_proto * sock_filter_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { const struct bpf_func_proto *func_proto; func_proto = cgroup_common_func_proto(func_id, prog); if (func_proto) return func_proto; func_proto = cgroup_current_func_proto(func_id, prog); if (func_proto) return func_proto; switch (func_id) { case BPF_FUNC_get_socket_cookie: return &bpf_get_socket_cookie_sock_proto; case BPF_FUNC_get_netns_cookie: return &bpf_get_netns_cookie_sock_proto; case BPF_FUNC_perf_event_output: return &bpf_event_output_data_proto; case BPF_FUNC_sk_storage_get: return &bpf_sk_storage_get_cg_sock_proto; case BPF_FUNC_ktime_get_coarse_ns: return &bpf_ktime_get_coarse_ns_proto; default: return bpf_base_func_proto(func_id, prog); } } static const struct bpf_func_proto * sock_addr_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { const struct bpf_func_proto *func_proto; func_proto = cgroup_common_func_proto(func_id, prog); if (func_proto) return func_proto; func_proto = cgroup_current_func_proto(func_id, prog); if (func_proto) return func_proto; switch (func_id) { case BPF_FUNC_bind: switch (prog->expected_attach_type) { case BPF_CGROUP_INET4_CONNECT: case BPF_CGROUP_INET6_CONNECT: return &bpf_bind_proto; default: return NULL; } case BPF_FUNC_get_socket_cookie: return &bpf_get_socket_cookie_sock_addr_proto; case BPF_FUNC_get_netns_cookie: return &bpf_get_netns_cookie_sock_addr_proto; case BPF_FUNC_perf_event_output: return &bpf_event_output_data_proto; #ifdef CONFIG_INET case BPF_FUNC_sk_lookup_tcp: return &bpf_sock_addr_sk_lookup_tcp_proto; case BPF_FUNC_sk_lookup_udp: return &bpf_sock_addr_sk_lookup_udp_proto; case BPF_FUNC_sk_release: return &bpf_sk_release_proto; case BPF_FUNC_skc_lookup_tcp: return &bpf_sock_addr_skc_lookup_tcp_proto; #endif /* CONFIG_INET */ case BPF_FUNC_sk_storage_get: return &bpf_sk_storage_get_proto; case BPF_FUNC_sk_storage_delete: return &bpf_sk_storage_delete_proto; case BPF_FUNC_setsockopt: switch (prog->expected_attach_type) { case BPF_CGROUP_INET4_BIND: case BPF_CGROUP_INET6_BIND: case BPF_CGROUP_INET4_CONNECT: case BPF_CGROUP_INET6_CONNECT: case BPF_CGROUP_UNIX_CONNECT: case BPF_CGROUP_UDP4_RECVMSG: case BPF_CGROUP_UDP6_RECVMSG: case BPF_CGROUP_UNIX_RECVMSG: case BPF_CGROUP_UDP4_SENDMSG: case BPF_CGROUP_UDP6_SENDMSG: case BPF_CGROUP_UNIX_SENDMSG: case BPF_CGROUP_INET4_GETPEERNAME: case BPF_CGROUP_INET6_GETPEERNAME: case BPF_CGROUP_UNIX_GETPEERNAME: case BPF_CGROUP_INET4_GETSOCKNAME: case BPF_CGROUP_INET6_GETSOCKNAME: case BPF_CGROUP_UNIX_GETSOCKNAME: return &bpf_sock_addr_setsockopt_proto; default: return NULL; } case BPF_FUNC_getsockopt: switch (prog->expected_attach_type) { case BPF_CGROUP_INET4_BIND: case BPF_CGROUP_INET6_BIND: case BPF_CGROUP_INET4_CONNECT: case BPF_CGROUP_INET6_CONNECT: case BPF_CGROUP_UNIX_CONNECT: case BPF_CGROUP_UDP4_RECVMSG: case BPF_CGROUP_UDP6_RECVMSG: case BPF_CGROUP_UNIX_RECVMSG: case BPF_CGROUP_UDP4_SENDMSG: case BPF_CGROUP_UDP6_SENDMSG: case BPF_CGROUP_UNIX_SENDMSG: case BPF_CGROUP_INET4_GETPEERNAME: case BPF_CGROUP_INET6_GETPEERNAME: case BPF_CGROUP_UNIX_GETPEERNAME: case BPF_CGROUP_INET4_GETSOCKNAME: case BPF_CGROUP_INET6_GETSOCKNAME: case BPF_CGROUP_UNIX_GETSOCKNAME: return &bpf_sock_addr_getsockopt_proto; default: return NULL; } default: return bpf_sk_base_func_proto(func_id, prog); } } static const struct bpf_func_proto * sk_filter_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_skb_load_bytes: return &bpf_skb_load_bytes_proto; case BPF_FUNC_skb_load_bytes_relative: return &bpf_skb_load_bytes_relative_proto; case BPF_FUNC_get_socket_cookie: return &bpf_get_socket_cookie_proto; case BPF_FUNC_get_netns_cookie: return &bpf_get_netns_cookie_proto; case BPF_FUNC_get_socket_uid: return &bpf_get_socket_uid_proto; case BPF_FUNC_perf_event_output: return &bpf_skb_event_output_proto; default: return bpf_sk_base_func_proto(func_id, prog); } } const struct bpf_func_proto bpf_sk_storage_get_proto __weak; const struct bpf_func_proto bpf_sk_storage_delete_proto __weak; static const struct bpf_func_proto * cg_skb_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { const struct bpf_func_proto *func_proto; func_proto = cgroup_common_func_proto(func_id, prog); if (func_proto) return func_proto; switch (func_id) { case BPF_FUNC_sk_fullsock: return &bpf_sk_fullsock_proto; case BPF_FUNC_sk_storage_get: return &bpf_sk_storage_get_proto; case BPF_FUNC_sk_storage_delete: return &bpf_sk_storage_delete_proto; case BPF_FUNC_perf_event_output: return &bpf_skb_event_output_proto; #ifdef CONFIG_SOCK_CGROUP_DATA case BPF_FUNC_skb_cgroup_id: return &bpf_skb_cgroup_id_proto; case BPF_FUNC_skb_ancestor_cgroup_id: return &bpf_skb_ancestor_cgroup_id_proto; case BPF_FUNC_sk_cgroup_id: return &bpf_sk_cgroup_id_proto; case BPF_FUNC_sk_ancestor_cgroup_id: return &bpf_sk_ancestor_cgroup_id_proto; #endif #ifdef CONFIG_INET case BPF_FUNC_sk_lookup_tcp: return &bpf_sk_lookup_tcp_proto; case BPF_FUNC_sk_lookup_udp: return &bpf_sk_lookup_udp_proto; case BPF_FUNC_sk_release: return &bpf_sk_release_proto; case BPF_FUNC_skc_lookup_tcp: return &bpf_skc_lookup_tcp_proto; case BPF_FUNC_tcp_sock: return &bpf_tcp_sock_proto; case BPF_FUNC_get_listener_sock: return &bpf_get_listener_sock_proto; case BPF_FUNC_skb_ecn_set_ce: return &bpf_skb_ecn_set_ce_proto; #endif default: return sk_filter_func_proto(func_id, prog); } } static const struct bpf_func_proto * tc_cls_act_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_skb_store_bytes: return &bpf_skb_store_bytes_proto; case BPF_FUNC_skb_load_bytes: return &bpf_skb_load_bytes_proto; case BPF_FUNC_skb_load_bytes_relative: return &bpf_skb_load_bytes_relative_proto; case BPF_FUNC_skb_pull_data: return &bpf_skb_pull_data_proto; case BPF_FUNC_csum_diff: return &bpf_csum_diff_proto; case BPF_FUNC_csum_update: return &bpf_csum_update_proto; case BPF_FUNC_csum_level: return &bpf_csum_level_proto; case BPF_FUNC_l3_csum_replace: return &bpf_l3_csum_replace_proto; case BPF_FUNC_l4_csum_replace: return &bpf_l4_csum_replace_proto; case BPF_FUNC_clone_redirect: return &bpf_clone_redirect_proto; case BPF_FUNC_get_cgroup_classid: return &bpf_get_cgroup_classid_proto; case BPF_FUNC_skb_vlan_push: return &bpf_skb_vlan_push_proto; case BPF_FUNC_skb_vlan_pop: return &bpf_skb_vlan_pop_proto; case BPF_FUNC_skb_change_proto: return &bpf_skb_change_proto_proto; case BPF_FUNC_skb_change_type: return &bpf_skb_change_type_proto; case BPF_FUNC_skb_adjust_room: return &bpf_skb_adjust_room_proto; case BPF_FUNC_skb_change_tail: return &bpf_skb_change_tail_proto; case BPF_FUNC_skb_change_head: return &bpf_skb_change_head_proto; case BPF_FUNC_skb_get_tunnel_key: return &bpf_skb_get_tunnel_key_proto; case BPF_FUNC_skb_set_tunnel_key: return bpf_get_skb_set_tunnel_proto(func_id); case BPF_FUNC_skb_get_tunnel_opt: return &bpf_skb_get_tunnel_opt_proto; case BPF_FUNC_skb_set_tunnel_opt: return bpf_get_skb_set_tunnel_proto(func_id); case BPF_FUNC_redirect: return &bpf_redirect_proto; case BPF_FUNC_redirect_neigh: return &bpf_redirect_neigh_proto; case BPF_FUNC_redirect_peer: return &bpf_redirect_peer_proto; case BPF_FUNC_get_route_realm: return &bpf_get_route_realm_proto; case BPF_FUNC_get_hash_recalc: return &bpf_get_hash_recalc_proto; case BPF_FUNC_set_hash_invalid: return &bpf_set_hash_invalid_proto; case BPF_FUNC_set_hash: return &bpf_set_hash_proto; case BPF_FUNC_perf_event_output: return &bpf_skb_event_output_proto; case BPF_FUNC_get_smp_processor_id: return &bpf_get_smp_processor_id_proto; case BPF_FUNC_skb_under_cgroup: return &bpf_skb_under_cgroup_proto; case BPF_FUNC_get_socket_cookie: return &bpf_get_socket_cookie_proto; case BPF_FUNC_get_netns_cookie: return &bpf_get_netns_cookie_proto; case BPF_FUNC_get_socket_uid: return &bpf_get_socket_uid_proto; case BPF_FUNC_fib_lookup: return &bpf_skb_fib_lookup_proto; case BPF_FUNC_check_mtu: return &bpf_skb_check_mtu_proto; case BPF_FUNC_sk_fullsock: return &bpf_sk_fullsock_proto; case BPF_FUNC_sk_storage_get: return &bpf_sk_storage_get_proto; case BPF_FUNC_sk_storage_delete: return &bpf_sk_storage_delete_proto; #ifdef CONFIG_XFRM case BPF_FUNC_skb_get_xfrm_state: return &bpf_skb_get_xfrm_state_proto; #endif #ifdef CONFIG_CGROUP_NET_CLASSID case BPF_FUNC_skb_cgroup_classid: return &bpf_skb_cgroup_classid_proto; #endif #ifdef CONFIG_SOCK_CGROUP_DATA case BPF_FUNC_skb_cgroup_id: return &bpf_skb_cgroup_id_proto; case BPF_FUNC_skb_ancestor_cgroup_id: return &bpf_skb_ancestor_cgroup_id_proto; #endif #ifdef CONFIG_INET case BPF_FUNC_sk_lookup_tcp: return &bpf_tc_sk_lookup_tcp_proto; case BPF_FUNC_sk_lookup_udp: return &bpf_tc_sk_lookup_udp_proto; case BPF_FUNC_sk_release: return &bpf_sk_release_proto; case BPF_FUNC_tcp_sock: return &bpf_tcp_sock_proto; case BPF_FUNC_get_listener_sock: return &bpf_get_listener_sock_proto; case BPF_FUNC_skc_lookup_tcp: return &bpf_tc_skc_lookup_tcp_proto; case BPF_FUNC_tcp_check_syncookie: return &bpf_tcp_check_syncookie_proto; case BPF_FUNC_skb_ecn_set_ce: return &bpf_skb_ecn_set_ce_proto; case BPF_FUNC_tcp_gen_syncookie: return &bpf_tcp_gen_syncookie_proto; case BPF_FUNC_sk_assign: return &bpf_sk_assign_proto; case BPF_FUNC_skb_set_tstamp: return &bpf_skb_set_tstamp_proto; #ifdef CONFIG_SYN_COOKIES case BPF_FUNC_tcp_raw_gen_syncookie_ipv4: return &bpf_tcp_raw_gen_syncookie_ipv4_proto; case BPF_FUNC_tcp_raw_gen_syncookie_ipv6: return &bpf_tcp_raw_gen_syncookie_ipv6_proto; case BPF_FUNC_tcp_raw_check_syncookie_ipv4: return &bpf_tcp_raw_check_syncookie_ipv4_proto; case BPF_FUNC_tcp_raw_check_syncookie_ipv6: return &bpf_tcp_raw_check_syncookie_ipv6_proto; #endif #endif default: return bpf_sk_base_func_proto(func_id, prog); } } static const struct bpf_func_proto * xdp_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_perf_event_output: return &bpf_xdp_event_output_proto; case BPF_FUNC_get_smp_processor_id: return &bpf_get_smp_processor_id_proto; case BPF_FUNC_csum_diff: return &bpf_csum_diff_proto; case BPF_FUNC_xdp_adjust_head: return &bpf_xdp_adjust_head_proto; case BPF_FUNC_xdp_adjust_meta: return &bpf_xdp_adjust_meta_proto; case BPF_FUNC_redirect: return &bpf_xdp_redirect_proto; case BPF_FUNC_redirect_map: return &bpf_xdp_redirect_map_proto; case BPF_FUNC_xdp_adjust_tail: return &bpf_xdp_adjust_tail_proto; case BPF_FUNC_xdp_get_buff_len: return &bpf_xdp_get_buff_len_proto; case BPF_FUNC_xdp_load_bytes: return &bpf_xdp_load_bytes_proto; case BPF_FUNC_xdp_store_bytes: return &bpf_xdp_store_bytes_proto; case BPF_FUNC_fib_lookup: return &bpf_xdp_fib_lookup_proto; case BPF_FUNC_check_mtu: return &bpf_xdp_check_mtu_proto; #ifdef CONFIG_INET case BPF_FUNC_sk_lookup_udp: return &bpf_xdp_sk_lookup_udp_proto; case BPF_FUNC_sk_lookup_tcp: return &bpf_xdp_sk_lookup_tcp_proto; case BPF_FUNC_sk_release: return &bpf_sk_release_proto; case BPF_FUNC_skc_lookup_tcp: return &bpf_xdp_skc_lookup_tcp_proto; case BPF_FUNC_tcp_check_syncookie: return &bpf_tcp_check_syncookie_proto; case BPF_FUNC_tcp_gen_syncookie: return &bpf_tcp_gen_syncookie_proto; #ifdef CONFIG_SYN_COOKIES case BPF_FUNC_tcp_raw_gen_syncookie_ipv4: return &bpf_tcp_raw_gen_syncookie_ipv4_proto; case BPF_FUNC_tcp_raw_gen_syncookie_ipv6: return &bpf_tcp_raw_gen_syncookie_ipv6_proto; case BPF_FUNC_tcp_raw_check_syncookie_ipv4: return &bpf_tcp_raw_check_syncookie_ipv4_proto; case BPF_FUNC_tcp_raw_check_syncookie_ipv6: return &bpf_tcp_raw_check_syncookie_ipv6_proto; #endif #endif default: return bpf_sk_base_func_proto(func_id, prog); } #if IS_MODULE(CONFIG_NF_CONNTRACK) && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES) /* The nf_conn___init type is used in the NF_CONNTRACK kfuncs. The * kfuncs are defined in two different modules, and we want to be able * to use them interchangeably with the same BTF type ID. Because modules * can't de-duplicate BTF IDs between each other, we need the type to be * referenced in the vmlinux BTF or the verifier will get confused about * the different types. So we add this dummy type reference which will * be included in vmlinux BTF, allowing both modules to refer to the * same type ID. */ BTF_TYPE_EMIT(struct nf_conn___init); #endif } const struct bpf_func_proto bpf_sock_map_update_proto __weak; const struct bpf_func_proto bpf_sock_hash_update_proto __weak; static const struct bpf_func_proto * sock_ops_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { const struct bpf_func_proto *func_proto; func_proto = cgroup_common_func_proto(func_id, prog); if (func_proto) return func_proto; switch (func_id) { case BPF_FUNC_setsockopt: return &bpf_sock_ops_setsockopt_proto; case BPF_FUNC_getsockopt: return &bpf_sock_ops_getsockopt_proto; case BPF_FUNC_sock_ops_cb_flags_set: return &bpf_sock_ops_cb_flags_set_proto; case BPF_FUNC_sock_map_update: return &bpf_sock_map_update_proto; case BPF_FUNC_sock_hash_update: return &bpf_sock_hash_update_proto; case BPF_FUNC_get_socket_cookie: return &bpf_get_socket_cookie_sock_ops_proto; case BPF_FUNC_perf_event_output: return &bpf_event_output_data_proto; case BPF_FUNC_sk_storage_get: return &bpf_sk_storage_get_proto; case BPF_FUNC_sk_storage_delete: return &bpf_sk_storage_delete_proto; case BPF_FUNC_get_netns_cookie: return &bpf_get_netns_cookie_sock_ops_proto; #ifdef CONFIG_INET case BPF_FUNC_load_hdr_opt: return &bpf_sock_ops_load_hdr_opt_proto; case BPF_FUNC_store_hdr_opt: return &bpf_sock_ops_store_hdr_opt_proto; case BPF_FUNC_reserve_hdr_opt: return &bpf_sock_ops_reserve_hdr_opt_proto; case BPF_FUNC_tcp_sock: return &bpf_tcp_sock_proto; #endif /* CONFIG_INET */ default: return bpf_sk_base_func_proto(func_id, prog); } } const struct bpf_func_proto bpf_msg_redirect_map_proto __weak; const struct bpf_func_proto bpf_msg_redirect_hash_proto __weak; static const struct bpf_func_proto * sk_msg_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_msg_redirect_map: return &bpf_msg_redirect_map_proto; case BPF_FUNC_msg_redirect_hash: return &bpf_msg_redirect_hash_proto; case BPF_FUNC_msg_apply_bytes: return &bpf_msg_apply_bytes_proto; case BPF_FUNC_msg_cork_bytes: return &bpf_msg_cork_bytes_proto; case BPF_FUNC_msg_pull_data: return &bpf_msg_pull_data_proto; case BPF_FUNC_msg_push_data: return &bpf_msg_push_data_proto; case BPF_FUNC_msg_pop_data: return &bpf_msg_pop_data_proto; case BPF_FUNC_perf_event_output: return &bpf_event_output_data_proto; case BPF_FUNC_get_current_uid_gid: return &bpf_get_current_uid_gid_proto; case BPF_FUNC_sk_storage_get: return &bpf_sk_storage_get_proto; case BPF_FUNC_sk_storage_delete: return &bpf_sk_storage_delete_proto; case BPF_FUNC_get_netns_cookie: return &bpf_get_netns_cookie_sk_msg_proto; #ifdef CONFIG_CGROUP_NET_CLASSID case BPF_FUNC_get_cgroup_classid: return &bpf_get_cgroup_classid_curr_proto; #endif default: return bpf_sk_base_func_proto(func_id, prog); } } const struct bpf_func_proto bpf_sk_redirect_map_proto __weak; const struct bpf_func_proto bpf_sk_redirect_hash_proto __weak; static const struct bpf_func_proto * sk_skb_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_skb_store_bytes: return &bpf_skb_store_bytes_proto; case BPF_FUNC_skb_load_bytes: return &bpf_skb_load_bytes_proto; case BPF_FUNC_skb_pull_data: return &sk_skb_pull_data_proto; case BPF_FUNC_skb_change_tail: return &sk_skb_change_tail_proto; case BPF_FUNC_skb_change_head: return &sk_skb_change_head_proto; case BPF_FUNC_skb_adjust_room: return &sk_skb_adjust_room_proto; case BPF_FUNC_get_socket_cookie: return &bpf_get_socket_cookie_proto; case BPF_FUNC_get_socket_uid: return &bpf_get_socket_uid_proto; case BPF_FUNC_sk_redirect_map: return &bpf_sk_redirect_map_proto; case BPF_FUNC_sk_redirect_hash: return &bpf_sk_redirect_hash_proto; case BPF_FUNC_perf_event_output: return &bpf_skb_event_output_proto; #ifdef CONFIG_INET case BPF_FUNC_sk_lookup_tcp: return &bpf_sk_lookup_tcp_proto; case BPF_FUNC_sk_lookup_udp: return &bpf_sk_lookup_udp_proto; case BPF_FUNC_sk_release: return &bpf_sk_release_proto; case BPF_FUNC_skc_lookup_tcp: return &bpf_skc_lookup_tcp_proto; #endif default: return bpf_sk_base_func_proto(func_id, prog); } } static const struct bpf_func_proto * flow_dissector_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_skb_load_bytes: return &bpf_flow_dissector_load_bytes_proto; default: return bpf_sk_base_func_proto(func_id, prog); } } static const struct bpf_func_proto * lwt_out_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_skb_load_bytes: return &bpf_skb_load_bytes_proto; case BPF_FUNC_skb_pull_data: return &bpf_skb_pull_data_proto; case BPF_FUNC_csum_diff: return &bpf_csum_diff_proto; case BPF_FUNC_get_cgroup_classid: return &bpf_get_cgroup_classid_proto; case BPF_FUNC_get_route_realm: return &bpf_get_route_realm_proto; case BPF_FUNC_get_hash_recalc: return &bpf_get_hash_recalc_proto; case BPF_FUNC_perf_event_output: return &bpf_skb_event_output_proto; case BPF_FUNC_get_smp_processor_id: return &bpf_get_smp_processor_id_proto; case BPF_FUNC_skb_under_cgroup: return &bpf_skb_under_cgroup_proto; default: return bpf_sk_base_func_proto(func_id, prog); } } static const struct bpf_func_proto * lwt_in_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_lwt_push_encap: return &bpf_lwt_in_push_encap_proto; default: return lwt_out_func_proto(func_id, prog); } } static const struct bpf_func_proto * lwt_xmit_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_skb_get_tunnel_key: return &bpf_skb_get_tunnel_key_proto; case BPF_FUNC_skb_set_tunnel_key: return bpf_get_skb_set_tunnel_proto(func_id); case BPF_FUNC_skb_get_tunnel_opt: return &bpf_skb_get_tunnel_opt_proto; case BPF_FUNC_skb_set_tunnel_opt: return bpf_get_skb_set_tunnel_proto(func_id); case BPF_FUNC_redirect: return &bpf_redirect_proto; case BPF_FUNC_clone_redirect: return &bpf_clone_redirect_proto; case BPF_FUNC_skb_change_tail: return &bpf_skb_change_tail_proto; case BPF_FUNC_skb_change_head: return &bpf_skb_change_head_proto; case BPF_FUNC_skb_store_bytes: return &bpf_skb_store_bytes_proto; case BPF_FUNC_csum_update: return &bpf_csum_update_proto; case BPF_FUNC_csum_level: return &bpf_csum_level_proto; case BPF_FUNC_l3_csum_replace: return &bpf_l3_csum_replace_proto; case BPF_FUNC_l4_csum_replace: return &bpf_l4_csum_replace_proto; case BPF_FUNC_set_hash_invalid: return &bpf_set_hash_invalid_proto; case BPF_FUNC_lwt_push_encap: return &bpf_lwt_xmit_push_encap_proto; default: return lwt_out_func_proto(func_id, prog); } } static const struct bpf_func_proto * lwt_seg6local_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { #if IS_ENABLED(CONFIG_IPV6_SEG6_BPF) case BPF_FUNC_lwt_seg6_store_bytes: return &bpf_lwt_seg6_store_bytes_proto; case BPF_FUNC_lwt_seg6_action: return &bpf_lwt_seg6_action_proto; case BPF_FUNC_lwt_seg6_adjust_srh: return &bpf_lwt_seg6_adjust_srh_proto; #endif default: return lwt_out_func_proto(func_id, prog); } } static bool bpf_skb_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { const int size_default = sizeof(__u32); if (off < 0 || off >= sizeof(struct __sk_buff)) return false; /* The verifier guarantees that size > 0. */ if (off % size != 0) return false; switch (off) { case bpf_ctx_range_till(struct __sk_buff, cb[0], cb[4]): if (off + size > offsetofend(struct __sk_buff, cb[4])) return false; break; case bpf_ctx_range(struct __sk_buff, data): case bpf_ctx_range(struct __sk_buff, data_meta): case bpf_ctx_range(struct __sk_buff, data_end): if (info->is_ldsx || size != size_default) return false; break; case bpf_ctx_range_till(struct __sk_buff, remote_ip6[0], remote_ip6[3]): case bpf_ctx_range_till(struct __sk_buff, local_ip6[0], local_ip6[3]): case bpf_ctx_range_till(struct __sk_buff, remote_ip4, remote_ip4): case bpf_ctx_range_till(struct __sk_buff, local_ip4, local_ip4): if (size != size_default) return false; break; case bpf_ctx_range_ptr(struct __sk_buff, flow_keys): return false; case bpf_ctx_range(struct __sk_buff, hwtstamp): if (type == BPF_WRITE || size != sizeof(__u64)) return false; break; case bpf_ctx_range(struct __sk_buff, tstamp): if (size != sizeof(__u64)) return false; break; case offsetof(struct __sk_buff, sk): if (type == BPF_WRITE || size != sizeof(__u64)) return false; info->reg_type = PTR_TO_SOCK_COMMON_OR_NULL; break; case offsetof(struct __sk_buff, tstamp_type): return false; case offsetofend(struct __sk_buff, tstamp_type) ... offsetof(struct __sk_buff, hwtstamp) - 1: /* Explicitly prohibit access to padding in __sk_buff. */ return false; default: /* Only narrow read access allowed for now. */ if (type == BPF_WRITE) { if (size != size_default) return false; } else { bpf_ctx_record_field_size(info, size_default); if (!bpf_ctx_narrow_access_ok(off, size, size_default)) return false; } } return true; } static bool sk_filter_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { switch (off) { case bpf_ctx_range(struct __sk_buff, tc_classid): case bpf_ctx_range(struct __sk_buff, data): case bpf_ctx_range(struct __sk_buff, data_meta): case bpf_ctx_range(struct __sk_buff, data_end): case bpf_ctx_range_till(struct __sk_buff, family, local_port): case bpf_ctx_range(struct __sk_buff, tstamp): case bpf_ctx_range(struct __sk_buff, wire_len): case bpf_ctx_range(struct __sk_buff, hwtstamp): return false; } if (type == BPF_WRITE) { switch (off) { case bpf_ctx_range_till(struct __sk_buff, cb[0], cb[4]): break; default: return false; } } return bpf_skb_is_valid_access(off, size, type, prog, info); } static bool cg_skb_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { switch (off) { case bpf_ctx_range(struct __sk_buff, tc_classid): case bpf_ctx_range(struct __sk_buff, data_meta): case bpf_ctx_range(struct __sk_buff, wire_len): return false; case bpf_ctx_range(struct __sk_buff, data): case bpf_ctx_range(struct __sk_buff, data_end): if (!bpf_token_capable(prog->aux->token, CAP_BPF)) return false; break; } if (type == BPF_WRITE) { switch (off) { case bpf_ctx_range(struct __sk_buff, mark): case bpf_ctx_range(struct __sk_buff, priority): case bpf_ctx_range_till(struct __sk_buff, cb[0], cb[4]): break; case bpf_ctx_range(struct __sk_buff, tstamp): if (!bpf_token_capable(prog->aux->token, CAP_BPF)) return false; break; default: return false; } } switch (off) { case bpf_ctx_range(struct __sk_buff, data): info->reg_type = PTR_TO_PACKET; break; case bpf_ctx_range(struct __sk_buff, data_end): info->reg_type = PTR_TO_PACKET_END; break; } return bpf_skb_is_valid_access(off, size, type, prog, info); } static bool lwt_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { switch (off) { case bpf_ctx_range(struct __sk_buff, tc_classid): case bpf_ctx_range_till(struct __sk_buff, family, local_port): case bpf_ctx_range(struct __sk_buff, data_meta): case bpf_ctx_range(struct __sk_buff, tstamp): case bpf_ctx_range(struct __sk_buff, wire_len): case bpf_ctx_range(struct __sk_buff, hwtstamp): return false; } if (type == BPF_WRITE) { switch (off) { case bpf_ctx_range(struct __sk_buff, mark): case bpf_ctx_range(struct __sk_buff, priority): case bpf_ctx_range_till(struct __sk_buff, cb[0], cb[4]): break; default: return false; } } switch (off) { case bpf_ctx_range(struct __sk_buff, data): info->reg_type = PTR_TO_PACKET; break; case bpf_ctx_range(struct __sk_buff, data_end): info->reg_type = PTR_TO_PACKET_END; break; } return bpf_skb_is_valid_access(off, size, type, prog, info); } /* Attach type specific accesses */ static bool __sock_filter_check_attach_type(int off, enum bpf_access_type access_type, enum bpf_attach_type attach_type) { switch (off) { case offsetof(struct bpf_sock, bound_dev_if): case offsetof(struct bpf_sock, mark): case offsetof(struct bpf_sock, priority): switch (attach_type) { case BPF_CGROUP_INET_SOCK_CREATE: case BPF_CGROUP_INET_SOCK_RELEASE: goto full_access; default: return false; } case bpf_ctx_range(struct bpf_sock, src_ip4): switch (attach_type) { case BPF_CGROUP_INET4_POST_BIND: goto read_only; default: return false; } case bpf_ctx_range_till(struct bpf_sock, src_ip6[0], src_ip6[3]): switch (attach_type) { case BPF_CGROUP_INET6_POST_BIND: goto read_only; default: return false; } case bpf_ctx_range(struct bpf_sock, src_port): switch (attach_type) { case BPF_CGROUP_INET4_POST_BIND: case BPF_CGROUP_INET6_POST_BIND: goto read_only; default: return false; } } read_only: return access_type == BPF_READ; full_access: return true; } bool bpf_sock_common_is_valid_access(int off, int size, enum bpf_access_type type, struct bpf_insn_access_aux *info) { switch (off) { case bpf_ctx_range_till(struct bpf_sock, type, priority): return false; default: return bpf_sock_is_valid_access(off, size, type, info); } } bool bpf_sock_is_valid_access(int off, int size, enum bpf_access_type type, struct bpf_insn_access_aux *info) { const int size_default = sizeof(__u32); int field_size; if (off < 0 || off >= sizeof(struct bpf_sock)) return false; if (off % size != 0) return false; switch (off) { case offsetof(struct bpf_sock, state): case offsetof(struct bpf_sock, family): case offsetof(struct bpf_sock, type): case offsetof(struct bpf_sock, protocol): case offsetof(struct bpf_sock, src_port): case offsetof(struct bpf_sock, rx_queue_mapping): case bpf_ctx_range(struct bpf_sock, src_ip4): case bpf_ctx_range_till(struct bpf_sock, src_ip6[0], src_ip6[3]): case bpf_ctx_range(struct bpf_sock, dst_ip4): case bpf_ctx_range_till(struct bpf_sock, dst_ip6[0], dst_ip6[3]): bpf_ctx_record_field_size(info, size_default); return bpf_ctx_narrow_access_ok(off, size, size_default); case bpf_ctx_range(struct bpf_sock, dst_port): field_size = size == size_default ? size_default : sizeof_field(struct bpf_sock, dst_port); bpf_ctx_record_field_size(info, field_size); return bpf_ctx_narrow_access_ok(off, size, field_size); case offsetofend(struct bpf_sock, dst_port) ... offsetof(struct bpf_sock, dst_ip4) - 1: return false; } return size == size_default; } static bool sock_filter_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { if (!bpf_sock_is_valid_access(off, size, type, info)) return false; return __sock_filter_check_attach_type(off, type, prog->expected_attach_type); } static int bpf_noop_prologue(struct bpf_insn *insn_buf, bool direct_write, const struct bpf_prog *prog) { /* Neither direct read nor direct write requires any preliminary * action. */ return 0; } static int bpf_unclone_prologue(struct bpf_insn *insn_buf, bool direct_write, const struct bpf_prog *prog, int drop_verdict) { struct bpf_insn *insn = insn_buf; if (!direct_write) return 0; /* if (!skb->cloned) * goto start; * * (Fast-path, otherwise approximation that we might be * a clone, do the rest in helper.) */ *insn++ = BPF_LDX_MEM(BPF_B, BPF_REG_6, BPF_REG_1, CLONED_OFFSET); *insn++ = BPF_ALU32_IMM(BPF_AND, BPF_REG_6, CLONED_MASK); *insn++ = BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 7); /* ret = bpf_skb_pull_data(skb, 0); */ *insn++ = BPF_MOV64_REG(BPF_REG_6, BPF_REG_1); *insn++ = BPF_ALU64_REG(BPF_XOR, BPF_REG_2, BPF_REG_2); *insn++ = BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_pull_data); /* if (!ret) * goto restore; * return TC_ACT_SHOT; */ *insn++ = BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2); *insn++ = BPF_ALU32_IMM(BPF_MOV, BPF_REG_0, drop_verdict); *insn++ = BPF_EXIT_INSN(); /* restore: */ *insn++ = BPF_MOV64_REG(BPF_REG_1, BPF_REG_6); /* start: */ *insn++ = prog->insnsi[0]; return insn - insn_buf; } static int bpf_gen_ld_abs(const struct bpf_insn *orig, struct bpf_insn *insn_buf) { bool indirect = BPF_MODE(orig->code) == BPF_IND; struct bpf_insn *insn = insn_buf; if (!indirect) { *insn++ = BPF_MOV64_IMM(BPF_REG_2, orig->imm); } else { *insn++ = BPF_MOV64_REG(BPF_REG_2, orig->src_reg); if (orig->imm) *insn++ = BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, orig->imm); } /* We're guaranteed here that CTX is in R6. */ *insn++ = BPF_MOV64_REG(BPF_REG_1, BPF_REG_CTX); switch (BPF_SIZE(orig->code)) { case BPF_B: *insn++ = BPF_EMIT_CALL(bpf_skb_load_helper_8_no_cache); break; case BPF_H: *insn++ = BPF_EMIT_CALL(bpf_skb_load_helper_16_no_cache); break; case BPF_W: *insn++ = BPF_EMIT_CALL(bpf_skb_load_helper_32_no_cache); break; } *insn++ = BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 0, 2); *insn++ = BPF_ALU32_REG(BPF_XOR, BPF_REG_0, BPF_REG_0); *insn++ = BPF_EXIT_INSN(); return insn - insn_buf; } static int tc_cls_act_prologue(struct bpf_insn *insn_buf, bool direct_write, const struct bpf_prog *prog) { return bpf_unclone_prologue(insn_buf, direct_write, prog, TC_ACT_SHOT); } static bool tc_cls_act_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { if (type == BPF_WRITE) { switch (off) { case bpf_ctx_range(struct __sk_buff, mark): case bpf_ctx_range(struct __sk_buff, tc_index): case bpf_ctx_range(struct __sk_buff, priority): case bpf_ctx_range(struct __sk_buff, tc_classid): case bpf_ctx_range_till(struct __sk_buff, cb[0], cb[4]): case bpf_ctx_range(struct __sk_buff, tstamp): case bpf_ctx_range(struct __sk_buff, queue_mapping): break; default: return false; } } switch (off) { case bpf_ctx_range(struct __sk_buff, data): info->reg_type = PTR_TO_PACKET; break; case bpf_ctx_range(struct __sk_buff, data_meta): info->reg_type = PTR_TO_PACKET_META; break; case bpf_ctx_range(struct __sk_buff, data_end): info->reg_type = PTR_TO_PACKET_END; break; case bpf_ctx_range_till(struct __sk_buff, family, local_port): return false; case offsetof(struct __sk_buff, tstamp_type): /* The convert_ctx_access() on reading and writing * __sk_buff->tstamp depends on whether the bpf prog * has used __sk_buff->tstamp_type or not. * Thus, we need to set prog->tstamp_type_access * earlier during is_valid_access() here. */ ((struct bpf_prog *)prog)->tstamp_type_access = 1; return size == sizeof(__u8); } return bpf_skb_is_valid_access(off, size, type, prog, info); } DEFINE_MUTEX(nf_conn_btf_access_lock); EXPORT_SYMBOL_GPL(nf_conn_btf_access_lock); int (*nfct_btf_struct_access)(struct bpf_verifier_log *log, const struct bpf_reg_state *reg, int off, int size); EXPORT_SYMBOL_GPL(nfct_btf_struct_access); static int tc_cls_act_btf_struct_access(struct bpf_verifier_log *log, const struct bpf_reg_state *reg, int off, int size) { int ret = -EACCES; mutex_lock(&nf_conn_btf_access_lock); if (nfct_btf_struct_access) ret = nfct_btf_struct_access(log, reg, off, size); mutex_unlock(&nf_conn_btf_access_lock); return ret; } static bool __is_valid_xdp_access(int off, int size) { if (off < 0 || off >= sizeof(struct xdp_md)) return false; if (off % size != 0) return false; if (size != sizeof(__u32)) return false; return true; } static bool xdp_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { if (prog->expected_attach_type != BPF_XDP_DEVMAP) { switch (off) { case offsetof(struct xdp_md, egress_ifindex): return false; } } if (type == BPF_WRITE) { if (bpf_prog_is_offloaded(prog->aux)) { switch (off) { case offsetof(struct xdp_md, rx_queue_index): return __is_valid_xdp_access(off, size); } } return false; } else { switch (off) { case offsetof(struct xdp_md, data_meta): case offsetof(struct xdp_md, data): case offsetof(struct xdp_md, data_end): if (info->is_ldsx) return false; } } switch (off) { case offsetof(struct xdp_md, data): info->reg_type = PTR_TO_PACKET; break; case offsetof(struct xdp_md, data_meta): info->reg_type = PTR_TO_PACKET_META; break; case offsetof(struct xdp_md, data_end): info->reg_type = PTR_TO_PACKET_END; break; } return __is_valid_xdp_access(off, size); } void bpf_warn_invalid_xdp_action(const struct net_device *dev, const struct bpf_prog *prog, u32 act) { const u32 act_max = XDP_REDIRECT; pr_warn_once("%s XDP return value %u on prog %s (id %d) dev %s, expect packet loss!\n", act > act_max ? "Illegal" : "Driver unsupported", act, prog->aux->name, prog->aux->id, dev ? dev->name : "N/A"); } EXPORT_SYMBOL_GPL(bpf_warn_invalid_xdp_action); static int xdp_btf_struct_access(struct bpf_verifier_log *log, const struct bpf_reg_state *reg, int off, int size) { int ret = -EACCES; mutex_lock(&nf_conn_btf_access_lock); if (nfct_btf_struct_access) ret = nfct_btf_struct_access(log, reg, off, size); mutex_unlock(&nf_conn_btf_access_lock); return ret; } static bool sock_addr_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { const int size_default = sizeof(__u32); if (off < 0 || off >= sizeof(struct bpf_sock_addr)) return false; if (off % size != 0) return false; /* Disallow access to fields not belonging to the attach type's address * family. */ switch (off) { case bpf_ctx_range(struct bpf_sock_addr, user_ip4): switch (prog->expected_attach_type) { case BPF_CGROUP_INET4_BIND: case BPF_CGROUP_INET4_CONNECT: case BPF_CGROUP_INET4_GETPEERNAME: case BPF_CGROUP_INET4_GETSOCKNAME: case BPF_CGROUP_UDP4_SENDMSG: case BPF_CGROUP_UDP4_RECVMSG: break; default: return false; } break; case bpf_ctx_range_till(struct bpf_sock_addr, user_ip6[0], user_ip6[3]): switch (prog->expected_attach_type) { case BPF_CGROUP_INET6_BIND: case BPF_CGROUP_INET6_CONNECT: case BPF_CGROUP_INET6_GETPEERNAME: case BPF_CGROUP_INET6_GETSOCKNAME: case BPF_CGROUP_UDP6_SENDMSG: case BPF_CGROUP_UDP6_RECVMSG: break; default: return false; } break; case bpf_ctx_range(struct bpf_sock_addr, msg_src_ip4): switch (prog->expected_attach_type) { case BPF_CGROUP_UDP4_SENDMSG: break; default: return false; } break; case bpf_ctx_range_till(struct bpf_sock_addr, msg_src_ip6[0], msg_src_ip6[3]): switch (prog->expected_attach_type) { case BPF_CGROUP_UDP6_SENDMSG: break; default: return false; } break; } switch (off) { case bpf_ctx_range(struct bpf_sock_addr, user_ip4): case bpf_ctx_range_till(struct bpf_sock_addr, user_ip6[0], user_ip6[3]): case bpf_ctx_range(struct bpf_sock_addr, msg_src_ip4): case bpf_ctx_range_till(struct bpf_sock_addr, msg_src_ip6[0], msg_src_ip6[3]): case bpf_ctx_range(struct bpf_sock_addr, user_port): if (type == BPF_READ) { bpf_ctx_record_field_size(info, size_default); if (bpf_ctx_wide_access_ok(off, size, struct bpf_sock_addr, user_ip6)) return true; if (bpf_ctx_wide_access_ok(off, size, struct bpf_sock_addr, msg_src_ip6)) return true; if (!bpf_ctx_narrow_access_ok(off, size, size_default)) return false; } else { if (bpf_ctx_wide_access_ok(off, size, struct bpf_sock_addr, user_ip6)) return true; if (bpf_ctx_wide_access_ok(off, size, struct bpf_sock_addr, msg_src_ip6)) return true; if (size != size_default) return false; } break; case offsetof(struct bpf_sock_addr, sk): if (type != BPF_READ) return false; if (size != sizeof(__u64)) return false; info->reg_type = PTR_TO_SOCKET; break; default: if (type == BPF_READ) { if (size != size_default) return false; } else { return false; } } return true; } static bool sock_ops_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { const int size_default = sizeof(__u32); if (off < 0 || off >= sizeof(struct bpf_sock_ops)) return false; /* The verifier guarantees that size > 0. */ if (off % size != 0) return false; if (type == BPF_WRITE) { switch (off) { case offsetof(struct bpf_sock_ops, reply): case offsetof(struct bpf_sock_ops, sk_txhash): if (size != size_default) return false; break; default: return false; } } else { switch (off) { case bpf_ctx_range_till(struct bpf_sock_ops, bytes_received, bytes_acked): if (size != sizeof(__u64)) return false; break; case offsetof(struct bpf_sock_ops, sk): if (size != sizeof(__u64)) return false; info->reg_type = PTR_TO_SOCKET_OR_NULL; break; case offsetof(struct bpf_sock_ops, skb_data): if (size != sizeof(__u64)) return false; info->reg_type = PTR_TO_PACKET; break; case offsetof(struct bpf_sock_ops, skb_data_end): if (size != sizeof(__u64)) return false; info->reg_type = PTR_TO_PACKET_END; break; case offsetof(struct bpf_sock_ops, skb_tcp_flags): bpf_ctx_record_field_size(info, size_default); return bpf_ctx_narrow_access_ok(off, size, size_default); case offsetof(struct bpf_sock_ops, skb_hwtstamp): if (size != sizeof(__u64)) return false; break; default: if (size != size_default) return false; break; } } return true; } static int sk_skb_prologue(struct bpf_insn *insn_buf, bool direct_write, const struct bpf_prog *prog) { return bpf_unclone_prologue(insn_buf, direct_write, prog, SK_DROP); } static bool sk_skb_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { switch (off) { case bpf_ctx_range(struct __sk_buff, tc_classid): case bpf_ctx_range(struct __sk_buff, data_meta): case bpf_ctx_range(struct __sk_buff, tstamp): case bpf_ctx_range(struct __sk_buff, wire_len): case bpf_ctx_range(struct __sk_buff, hwtstamp): return false; } if (type == BPF_WRITE) { switch (off) { case bpf_ctx_range(struct __sk_buff, tc_index): case bpf_ctx_range(struct __sk_buff, priority): break; default: return false; } } switch (off) { case bpf_ctx_range(struct __sk_buff, mark): return false; case bpf_ctx_range(struct __sk_buff, data): info->reg_type = PTR_TO_PACKET; break; case bpf_ctx_range(struct __sk_buff, data_end): info->reg_type = PTR_TO_PACKET_END; break; } return bpf_skb_is_valid_access(off, size, type, prog, info); } static bool sk_msg_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { if (type == BPF_WRITE) return false; if (off % size != 0) return false; switch (off) { case offsetof(struct sk_msg_md, data): info->reg_type = PTR_TO_PACKET; if (size != sizeof(__u64)) return false; break; case offsetof(struct sk_msg_md, data_end): info->reg_type = PTR_TO_PACKET_END; if (size != sizeof(__u64)) return false; break; case offsetof(struct sk_msg_md, sk): if (size != sizeof(__u64)) return false; info->reg_type = PTR_TO_SOCKET; break; case bpf_ctx_range(struct sk_msg_md, family): case bpf_ctx_range(struct sk_msg_md, remote_ip4): case bpf_ctx_range(struct sk_msg_md, local_ip4): case bpf_ctx_range_till(struct sk_msg_md, remote_ip6[0], remote_ip6[3]): case bpf_ctx_range_till(struct sk_msg_md, local_ip6[0], local_ip6[3]): case bpf_ctx_range(struct sk_msg_md, remote_port): case bpf_ctx_range(struct sk_msg_md, local_port): case bpf_ctx_range(struct sk_msg_md, size): if (size != sizeof(__u32)) return false; break; default: return false; } return true; } static bool flow_dissector_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { const int size_default = sizeof(__u32); if (off < 0 || off >= sizeof(struct __sk_buff)) return false; if (type == BPF_WRITE) return false; switch (off) { case bpf_ctx_range(struct __sk_buff, data): if (info->is_ldsx || size != size_default) return false; info->reg_type = PTR_TO_PACKET; return true; case bpf_ctx_range(struct __sk_buff, data_end): if (info->is_ldsx || size != size_default) return false; info->reg_type = PTR_TO_PACKET_END; return true; case bpf_ctx_range_ptr(struct __sk_buff, flow_keys): if (size != sizeof(__u64)) return false; info->reg_type = PTR_TO_FLOW_KEYS; return true; default: return false; } } static u32 flow_dissector_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; switch (si->off) { case offsetof(struct __sk_buff, data): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_flow_dissector, data), si->dst_reg, si->src_reg, offsetof(struct bpf_flow_dissector, data)); break; case offsetof(struct __sk_buff, data_end): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_flow_dissector, data_end), si->dst_reg, si->src_reg, offsetof(struct bpf_flow_dissector, data_end)); break; case offsetof(struct __sk_buff, flow_keys): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_flow_dissector, flow_keys), si->dst_reg, si->src_reg, offsetof(struct bpf_flow_dissector, flow_keys)); break; } return insn - insn_buf; } static struct bpf_insn *bpf_convert_tstamp_type_read(const struct bpf_insn *si, struct bpf_insn *insn) { __u8 value_reg = si->dst_reg; __u8 skb_reg = si->src_reg; BUILD_BUG_ON(__SKB_CLOCK_MAX != (int)BPF_SKB_CLOCK_TAI); BUILD_BUG_ON(SKB_CLOCK_REALTIME != (int)BPF_SKB_CLOCK_REALTIME); BUILD_BUG_ON(SKB_CLOCK_MONOTONIC != (int)BPF_SKB_CLOCK_MONOTONIC); BUILD_BUG_ON(SKB_CLOCK_TAI != (int)BPF_SKB_CLOCK_TAI); *insn++ = BPF_LDX_MEM(BPF_B, value_reg, skb_reg, SKB_BF_MONO_TC_OFFSET); *insn++ = BPF_ALU32_IMM(BPF_AND, value_reg, SKB_TSTAMP_TYPE_MASK); #ifdef __BIG_ENDIAN_BITFIELD *insn++ = BPF_ALU32_IMM(BPF_RSH, value_reg, SKB_TSTAMP_TYPE_RSHIFT); #else BUILD_BUG_ON(!(SKB_TSTAMP_TYPE_MASK & 0x1)); #endif return insn; } static struct bpf_insn *bpf_convert_shinfo_access(__u8 dst_reg, __u8 skb_reg, struct bpf_insn *insn) { /* si->dst_reg = skb_shinfo(SKB); */ #ifdef NET_SKBUFF_DATA_USES_OFFSET *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, end), BPF_REG_AX, skb_reg, offsetof(struct sk_buff, end)); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, head), dst_reg, skb_reg, offsetof(struct sk_buff, head)); *insn++ = BPF_ALU64_REG(BPF_ADD, dst_reg, BPF_REG_AX); #else *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, end), dst_reg, skb_reg, offsetof(struct sk_buff, end)); #endif return insn; } static struct bpf_insn *bpf_convert_tstamp_read(const struct bpf_prog *prog, const struct bpf_insn *si, struct bpf_insn *insn) { __u8 value_reg = si->dst_reg; __u8 skb_reg = si->src_reg; #ifdef CONFIG_NET_XGRESS /* If the tstamp_type is read, * the bpf prog is aware the tstamp could have delivery time. * Thus, read skb->tstamp as is if tstamp_type_access is true. */ if (!prog->tstamp_type_access) { /* AX is needed because src_reg and dst_reg could be the same */ __u8 tmp_reg = BPF_REG_AX; *insn++ = BPF_LDX_MEM(BPF_B, tmp_reg, skb_reg, SKB_BF_MONO_TC_OFFSET); /* check if ingress mask bits is set */ *insn++ = BPF_JMP32_IMM(BPF_JSET, tmp_reg, TC_AT_INGRESS_MASK, 1); *insn++ = BPF_JMP_A(4); *insn++ = BPF_JMP32_IMM(BPF_JSET, tmp_reg, SKB_TSTAMP_TYPE_MASK, 1); *insn++ = BPF_JMP_A(2); /* skb->tc_at_ingress && skb->tstamp_type, * read 0 as the (rcv) timestamp. */ *insn++ = BPF_MOV64_IMM(value_reg, 0); *insn++ = BPF_JMP_A(1); } #endif *insn++ = BPF_LDX_MEM(BPF_DW, value_reg, skb_reg, offsetof(struct sk_buff, tstamp)); return insn; } static struct bpf_insn *bpf_convert_tstamp_write(const struct bpf_prog *prog, const struct bpf_insn *si, struct bpf_insn *insn) { __u8 value_reg = si->src_reg; __u8 skb_reg = si->dst_reg; #ifdef CONFIG_NET_XGRESS /* If the tstamp_type is read, * the bpf prog is aware the tstamp could have delivery time. * Thus, write skb->tstamp as is if tstamp_type_access is true. * Otherwise, writing at ingress will have to clear the * skb->tstamp_type bit also. */ if (!prog->tstamp_type_access) { __u8 tmp_reg = BPF_REG_AX; *insn++ = BPF_LDX_MEM(BPF_B, tmp_reg, skb_reg, SKB_BF_MONO_TC_OFFSET); /* Writing __sk_buff->tstamp as ingress, goto <clear> */ *insn++ = BPF_JMP32_IMM(BPF_JSET, tmp_reg, TC_AT_INGRESS_MASK, 1); /* goto <store> */ *insn++ = BPF_JMP_A(2); /* <clear>: skb->tstamp_type */ *insn++ = BPF_ALU32_IMM(BPF_AND, tmp_reg, ~SKB_TSTAMP_TYPE_MASK); *insn++ = BPF_STX_MEM(BPF_B, skb_reg, tmp_reg, SKB_BF_MONO_TC_OFFSET); } #endif /* <store>: skb->tstamp = tstamp */ *insn++ = BPF_RAW_INSN(BPF_CLASS(si->code) | BPF_DW | BPF_MEM, skb_reg, value_reg, offsetof(struct sk_buff, tstamp), si->imm); return insn; } #define BPF_EMIT_STORE(size, si, off) \ BPF_RAW_INSN(BPF_CLASS((si)->code) | (size) | BPF_MEM, \ (si)->dst_reg, (si)->src_reg, (off), (si)->imm) static u32 bpf_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; int off; switch (si->off) { case offsetof(struct __sk_buff, len): *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, len, 4, target_size)); break; case offsetof(struct __sk_buff, protocol): *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, protocol, 2, target_size)); break; case offsetof(struct __sk_buff, vlan_proto): *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, vlan_proto, 2, target_size)); break; case offsetof(struct __sk_buff, priority): if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_W, si, bpf_target_off(struct sk_buff, priority, 4, target_size)); else *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, priority, 4, target_size)); break; case offsetof(struct __sk_buff, ingress_ifindex): *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, skb_iif, 4, target_size)); break; case offsetof(struct __sk_buff, ifindex): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, dev), si->dst_reg, si->src_reg, offsetof(struct sk_buff, dev)); *insn++ = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, 1); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, bpf_target_off(struct net_device, ifindex, 4, target_size)); break; case offsetof(struct __sk_buff, hash): *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, hash, 4, target_size)); break; case offsetof(struct __sk_buff, mark): if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_W, si, bpf_target_off(struct sk_buff, mark, 4, target_size)); else *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, mark, 4, target_size)); break; case offsetof(struct __sk_buff, pkt_type): *target_size = 1; *insn++ = BPF_LDX_MEM(BPF_B, si->dst_reg, si->src_reg, PKT_TYPE_OFFSET); *insn++ = BPF_ALU32_IMM(BPF_AND, si->dst_reg, PKT_TYPE_MAX); #ifdef __BIG_ENDIAN_BITFIELD *insn++ = BPF_ALU32_IMM(BPF_RSH, si->dst_reg, 5); #endif break; case offsetof(struct __sk_buff, queue_mapping): if (type == BPF_WRITE) { u32 offset = bpf_target_off(struct sk_buff, queue_mapping, 2, target_size); if (BPF_CLASS(si->code) == BPF_ST && si->imm >= NO_QUEUE_MAPPING) { *insn++ = BPF_JMP_A(0); /* noop */ break; } if (BPF_CLASS(si->code) == BPF_STX) *insn++ = BPF_JMP_IMM(BPF_JGE, si->src_reg, NO_QUEUE_MAPPING, 1); *insn++ = BPF_EMIT_STORE(BPF_H, si, offset); } else { *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, queue_mapping, 2, target_size)); } break; case offsetof(struct __sk_buff, vlan_present): *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, vlan_all, 4, target_size)); *insn++ = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, 1); *insn++ = BPF_ALU32_IMM(BPF_MOV, si->dst_reg, 1); break; case offsetof(struct __sk_buff, vlan_tci): *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, vlan_tci, 2, target_size)); break; case offsetof(struct __sk_buff, cb[0]) ... offsetofend(struct __sk_buff, cb[4]) - 1: BUILD_BUG_ON(sizeof_field(struct qdisc_skb_cb, data) < 20); BUILD_BUG_ON((offsetof(struct sk_buff, cb) + offsetof(struct qdisc_skb_cb, data)) % sizeof(__u64)); prog->cb_access = 1; off = si->off; off -= offsetof(struct __sk_buff, cb[0]); off += offsetof(struct sk_buff, cb); off += offsetof(struct qdisc_skb_cb, data); if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_SIZE(si->code), si, off); else *insn++ = BPF_LDX_MEM(BPF_SIZE(si->code), si->dst_reg, si->src_reg, off); break; case offsetof(struct __sk_buff, tc_classid): BUILD_BUG_ON(sizeof_field(struct qdisc_skb_cb, tc_classid) != 2); off = si->off; off -= offsetof(struct __sk_buff, tc_classid); off += offsetof(struct sk_buff, cb); off += offsetof(struct qdisc_skb_cb, tc_classid); *target_size = 2; if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_H, si, off); else *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, off); break; case offsetof(struct __sk_buff, data): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, data), si->dst_reg, si->src_reg, offsetof(struct sk_buff, data)); break; case offsetof(struct __sk_buff, data_meta): off = si->off; off -= offsetof(struct __sk_buff, data_meta); off += offsetof(struct sk_buff, cb); off += offsetof(struct bpf_skb_data_end, data_meta); *insn++ = BPF_LDX_MEM(BPF_SIZEOF(void *), si->dst_reg, si->src_reg, off); break; case offsetof(struct __sk_buff, data_end): off = si->off; off -= offsetof(struct __sk_buff, data_end); off += offsetof(struct sk_buff, cb); off += offsetof(struct bpf_skb_data_end, data_end); *insn++ = BPF_LDX_MEM(BPF_SIZEOF(void *), si->dst_reg, si->src_reg, off); break; case offsetof(struct __sk_buff, tc_index): #ifdef CONFIG_NET_SCHED if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_H, si, bpf_target_off(struct sk_buff, tc_index, 2, target_size)); else *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, tc_index, 2, target_size)); #else *target_size = 2; if (type == BPF_WRITE) *insn++ = BPF_MOV64_REG(si->dst_reg, si->dst_reg); else *insn++ = BPF_MOV64_IMM(si->dst_reg, 0); #endif break; case offsetof(struct __sk_buff, napi_id): #if defined(CONFIG_NET_RX_BUSY_POLL) *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct sk_buff, napi_id, 4, target_size)); *insn++ = BPF_JMP_IMM(BPF_JGE, si->dst_reg, MIN_NAPI_ID, 1); *insn++ = BPF_MOV64_IMM(si->dst_reg, 0); #else *target_size = 4; *insn++ = BPF_MOV64_IMM(si->dst_reg, 0); #endif break; case offsetof(struct __sk_buff, family): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_family) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, bpf_target_off(struct sock_common, skc_family, 2, target_size)); break; case offsetof(struct __sk_buff, remote_ip4): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_daddr) != 4); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, bpf_target_off(struct sock_common, skc_daddr, 4, target_size)); break; case offsetof(struct __sk_buff, local_ip4): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_rcv_saddr) != 4); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, bpf_target_off(struct sock_common, skc_rcv_saddr, 4, target_size)); break; case offsetof(struct __sk_buff, remote_ip6[0]) ... offsetof(struct __sk_buff, remote_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) BUILD_BUG_ON(sizeof_field(struct sock_common, skc_v6_daddr.s6_addr32[0]) != 4); off = si->off; off -= offsetof(struct __sk_buff, remote_ip6[0]); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_v6_daddr.s6_addr32[0]) + off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; case offsetof(struct __sk_buff, local_ip6[0]) ... offsetof(struct __sk_buff, local_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) BUILD_BUG_ON(sizeof_field(struct sock_common, skc_v6_rcv_saddr.s6_addr32[0]) != 4); off = si->off; off -= offsetof(struct __sk_buff, local_ip6[0]); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_v6_rcv_saddr.s6_addr32[0]) + off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; case offsetof(struct __sk_buff, remote_port): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_dport) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, bpf_target_off(struct sock_common, skc_dport, 2, target_size)); #ifndef __BIG_ENDIAN_BITFIELD *insn++ = BPF_ALU32_IMM(BPF_LSH, si->dst_reg, 16); #endif break; case offsetof(struct __sk_buff, local_port): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_num) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, bpf_target_off(struct sock_common, skc_num, 2, target_size)); break; case offsetof(struct __sk_buff, tstamp): BUILD_BUG_ON(sizeof_field(struct sk_buff, tstamp) != 8); if (type == BPF_WRITE) insn = bpf_convert_tstamp_write(prog, si, insn); else insn = bpf_convert_tstamp_read(prog, si, insn); break; case offsetof(struct __sk_buff, tstamp_type): insn = bpf_convert_tstamp_type_read(si, insn); break; case offsetof(struct __sk_buff, gso_segs): insn = bpf_convert_shinfo_access(si->dst_reg, si->src_reg, insn); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct skb_shared_info, gso_segs), si->dst_reg, si->dst_reg, bpf_target_off(struct skb_shared_info, gso_segs, 2, target_size)); break; case offsetof(struct __sk_buff, gso_size): insn = bpf_convert_shinfo_access(si->dst_reg, si->src_reg, insn); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct skb_shared_info, gso_size), si->dst_reg, si->dst_reg, bpf_target_off(struct skb_shared_info, gso_size, 2, target_size)); break; case offsetof(struct __sk_buff, wire_len): BUILD_BUG_ON(sizeof_field(struct qdisc_skb_cb, pkt_len) != 4); off = si->off; off -= offsetof(struct __sk_buff, wire_len); off += offsetof(struct sk_buff, cb); off += offsetof(struct qdisc_skb_cb, pkt_len); *target_size = 4; *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, off); break; case offsetof(struct __sk_buff, sk): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, sk), si->dst_reg, si->src_reg, offsetof(struct sk_buff, sk)); break; case offsetof(struct __sk_buff, hwtstamp): BUILD_BUG_ON(sizeof_field(struct skb_shared_hwtstamps, hwtstamp) != 8); BUILD_BUG_ON(offsetof(struct skb_shared_hwtstamps, hwtstamp) != 0); insn = bpf_convert_shinfo_access(si->dst_reg, si->src_reg, insn); *insn++ = BPF_LDX_MEM(BPF_DW, si->dst_reg, si->dst_reg, bpf_target_off(struct skb_shared_info, hwtstamps, 8, target_size)); break; } return insn - insn_buf; } u32 bpf_sock_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; int off; switch (si->off) { case offsetof(struct bpf_sock, bound_dev_if): BUILD_BUG_ON(sizeof_field(struct sock, sk_bound_dev_if) != 4); if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_W, si, offsetof(struct sock, sk_bound_dev_if)); else *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, offsetof(struct sock, sk_bound_dev_if)); break; case offsetof(struct bpf_sock, mark): BUILD_BUG_ON(sizeof_field(struct sock, sk_mark) != 4); if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_W, si, offsetof(struct sock, sk_mark)); else *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, offsetof(struct sock, sk_mark)); break; case offsetof(struct bpf_sock, priority): BUILD_BUG_ON(sizeof_field(struct sock, sk_priority) != 4); if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_W, si, offsetof(struct sock, sk_priority)); else *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, offsetof(struct sock, sk_priority)); break; case offsetof(struct bpf_sock, family): *insn++ = BPF_LDX_MEM( BPF_FIELD_SIZEOF(struct sock_common, skc_family), si->dst_reg, si->src_reg, bpf_target_off(struct sock_common, skc_family, sizeof_field(struct sock_common, skc_family), target_size)); break; case offsetof(struct bpf_sock, type): *insn++ = BPF_LDX_MEM( BPF_FIELD_SIZEOF(struct sock, sk_type), si->dst_reg, si->src_reg, bpf_target_off(struct sock, sk_type, sizeof_field(struct sock, sk_type), target_size)); break; case offsetof(struct bpf_sock, protocol): *insn++ = BPF_LDX_MEM( BPF_FIELD_SIZEOF(struct sock, sk_protocol), si->dst_reg, si->src_reg, bpf_target_off(struct sock, sk_protocol, sizeof_field(struct sock, sk_protocol), target_size)); break; case offsetof(struct bpf_sock, src_ip4): *insn++ = BPF_LDX_MEM( BPF_SIZE(si->code), si->dst_reg, si->src_reg, bpf_target_off(struct sock_common, skc_rcv_saddr, sizeof_field(struct sock_common, skc_rcv_saddr), target_size)); break; case offsetof(struct bpf_sock, dst_ip4): *insn++ = BPF_LDX_MEM( BPF_SIZE(si->code), si->dst_reg, si->src_reg, bpf_target_off(struct sock_common, skc_daddr, sizeof_field(struct sock_common, skc_daddr), target_size)); break; case bpf_ctx_range_till(struct bpf_sock, src_ip6[0], src_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) off = si->off; off -= offsetof(struct bpf_sock, src_ip6[0]); *insn++ = BPF_LDX_MEM( BPF_SIZE(si->code), si->dst_reg, si->src_reg, bpf_target_off( struct sock_common, skc_v6_rcv_saddr.s6_addr32[0], sizeof_field(struct sock_common, skc_v6_rcv_saddr.s6_addr32[0]), target_size) + off); #else (void)off; *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; case bpf_ctx_range_till(struct bpf_sock, dst_ip6[0], dst_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) off = si->off; off -= offsetof(struct bpf_sock, dst_ip6[0]); *insn++ = BPF_LDX_MEM( BPF_SIZE(si->code), si->dst_reg, si->src_reg, bpf_target_off(struct sock_common, skc_v6_daddr.s6_addr32[0], sizeof_field(struct sock_common, skc_v6_daddr.s6_addr32[0]), target_size) + off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); *target_size = 4; #endif break; case offsetof(struct bpf_sock, src_port): *insn++ = BPF_LDX_MEM( BPF_FIELD_SIZEOF(struct sock_common, skc_num), si->dst_reg, si->src_reg, bpf_target_off(struct sock_common, skc_num, sizeof_field(struct sock_common, skc_num), target_size)); break; case offsetof(struct bpf_sock, dst_port): *insn++ = BPF_LDX_MEM( BPF_FIELD_SIZEOF(struct sock_common, skc_dport), si->dst_reg, si->src_reg, bpf_target_off(struct sock_common, skc_dport, sizeof_field(struct sock_common, skc_dport), target_size)); break; case offsetof(struct bpf_sock, state): *insn++ = BPF_LDX_MEM( BPF_FIELD_SIZEOF(struct sock_common, skc_state), si->dst_reg, si->src_reg, bpf_target_off(struct sock_common, skc_state, sizeof_field(struct sock_common, skc_state), target_size)); break; case offsetof(struct bpf_sock, rx_queue_mapping): #ifdef CONFIG_SOCK_RX_QUEUE_MAPPING *insn++ = BPF_LDX_MEM( BPF_FIELD_SIZEOF(struct sock, sk_rx_queue_mapping), si->dst_reg, si->src_reg, bpf_target_off(struct sock, sk_rx_queue_mapping, sizeof_field(struct sock, sk_rx_queue_mapping), target_size)); *insn++ = BPF_JMP_IMM(BPF_JNE, si->dst_reg, NO_QUEUE_MAPPING, 1); *insn++ = BPF_MOV64_IMM(si->dst_reg, -1); #else *insn++ = BPF_MOV64_IMM(si->dst_reg, -1); *target_size = 2; #endif break; } return insn - insn_buf; } static u32 tc_cls_act_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; switch (si->off) { case offsetof(struct __sk_buff, ifindex): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, dev), si->dst_reg, si->src_reg, offsetof(struct sk_buff, dev)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, bpf_target_off(struct net_device, ifindex, 4, target_size)); break; default: return bpf_convert_ctx_access(type, si, insn_buf, prog, target_size); } return insn - insn_buf; } static u32 xdp_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; switch (si->off) { case offsetof(struct xdp_md, data): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_buff, data), si->dst_reg, si->src_reg, offsetof(struct xdp_buff, data)); break; case offsetof(struct xdp_md, data_meta): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_buff, data_meta), si->dst_reg, si->src_reg, offsetof(struct xdp_buff, data_meta)); break; case offsetof(struct xdp_md, data_end): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_buff, data_end), si->dst_reg, si->src_reg, offsetof(struct xdp_buff, data_end)); break; case offsetof(struct xdp_md, ingress_ifindex): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_buff, rxq), si->dst_reg, si->src_reg, offsetof(struct xdp_buff, rxq)); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_rxq_info, dev), si->dst_reg, si->dst_reg, offsetof(struct xdp_rxq_info, dev)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct net_device, ifindex)); break; case offsetof(struct xdp_md, rx_queue_index): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_buff, rxq), si->dst_reg, si->src_reg, offsetof(struct xdp_buff, rxq)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct xdp_rxq_info, queue_index)); break; case offsetof(struct xdp_md, egress_ifindex): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_buff, txq), si->dst_reg, si->src_reg, offsetof(struct xdp_buff, txq)); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct xdp_txq_info, dev), si->dst_reg, si->dst_reg, offsetof(struct xdp_txq_info, dev)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct net_device, ifindex)); break; } return insn - insn_buf; } /* SOCK_ADDR_LOAD_NESTED_FIELD() loads Nested Field S.F.NF where S is type of * context Structure, F is Field in context structure that contains a pointer * to Nested Structure of type NS that has the field NF. * * SIZE encodes the load size (BPF_B, BPF_H, etc). It's up to caller to make * sure that SIZE is not greater than actual size of S.F.NF. * * If offset OFF is provided, the load happens from that offset relative to * offset of NF. */ #define SOCK_ADDR_LOAD_NESTED_FIELD_SIZE_OFF(S, NS, F, NF, SIZE, OFF) \ do { \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(S, F), si->dst_reg, \ si->src_reg, offsetof(S, F)); \ *insn++ = BPF_LDX_MEM( \ SIZE, si->dst_reg, si->dst_reg, \ bpf_target_off(NS, NF, sizeof_field(NS, NF), \ target_size) \ + OFF); \ } while (0) #define SOCK_ADDR_LOAD_NESTED_FIELD(S, NS, F, NF) \ SOCK_ADDR_LOAD_NESTED_FIELD_SIZE_OFF(S, NS, F, NF, \ BPF_FIELD_SIZEOF(NS, NF), 0) /* SOCK_ADDR_STORE_NESTED_FIELD_OFF() has semantic similar to * SOCK_ADDR_LOAD_NESTED_FIELD_SIZE_OFF() but for store operation. * * In addition it uses Temporary Field TF (member of struct S) as the 3rd * "register" since two registers available in convert_ctx_access are not * enough: we can't override neither SRC, since it contains value to store, nor * DST since it contains pointer to context that may be used by later * instructions. But we need a temporary place to save pointer to nested * structure whose field we want to store to. */ #define SOCK_ADDR_STORE_NESTED_FIELD_OFF(S, NS, F, NF, SIZE, OFF, TF) \ do { \ int tmp_reg = BPF_REG_9; \ if (si->src_reg == tmp_reg || si->dst_reg == tmp_reg) \ --tmp_reg; \ if (si->src_reg == tmp_reg || si->dst_reg == tmp_reg) \ --tmp_reg; \ *insn++ = BPF_STX_MEM(BPF_DW, si->dst_reg, tmp_reg, \ offsetof(S, TF)); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(S, F), tmp_reg, \ si->dst_reg, offsetof(S, F)); \ *insn++ = BPF_RAW_INSN(SIZE | BPF_MEM | BPF_CLASS(si->code), \ tmp_reg, si->src_reg, \ bpf_target_off(NS, NF, sizeof_field(NS, NF), \ target_size) \ + OFF, \ si->imm); \ *insn++ = BPF_LDX_MEM(BPF_DW, tmp_reg, si->dst_reg, \ offsetof(S, TF)); \ } while (0) #define SOCK_ADDR_LOAD_OR_STORE_NESTED_FIELD_SIZE_OFF(S, NS, F, NF, SIZE, OFF, \ TF) \ do { \ if (type == BPF_WRITE) { \ SOCK_ADDR_STORE_NESTED_FIELD_OFF(S, NS, F, NF, SIZE, \ OFF, TF); \ } else { \ SOCK_ADDR_LOAD_NESTED_FIELD_SIZE_OFF( \ S, NS, F, NF, SIZE, OFF); \ } \ } while (0) static u32 sock_addr_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { int off, port_size = sizeof_field(struct sockaddr_in6, sin6_port); struct bpf_insn *insn = insn_buf; switch (si->off) { case offsetof(struct bpf_sock_addr, user_family): SOCK_ADDR_LOAD_NESTED_FIELD(struct bpf_sock_addr_kern, struct sockaddr, uaddr, sa_family); break; case offsetof(struct bpf_sock_addr, user_ip4): SOCK_ADDR_LOAD_OR_STORE_NESTED_FIELD_SIZE_OFF( struct bpf_sock_addr_kern, struct sockaddr_in, uaddr, sin_addr, BPF_SIZE(si->code), 0, tmp_reg); break; case bpf_ctx_range_till(struct bpf_sock_addr, user_ip6[0], user_ip6[3]): off = si->off; off -= offsetof(struct bpf_sock_addr, user_ip6[0]); SOCK_ADDR_LOAD_OR_STORE_NESTED_FIELD_SIZE_OFF( struct bpf_sock_addr_kern, struct sockaddr_in6, uaddr, sin6_addr.s6_addr32[0], BPF_SIZE(si->code), off, tmp_reg); break; case offsetof(struct bpf_sock_addr, user_port): /* To get port we need to know sa_family first and then treat * sockaddr as either sockaddr_in or sockaddr_in6. * Though we can simplify since port field has same offset and * size in both structures. * Here we check this invariant and use just one of the * structures if it's true. */ BUILD_BUG_ON(offsetof(struct sockaddr_in, sin_port) != offsetof(struct sockaddr_in6, sin6_port)); BUILD_BUG_ON(sizeof_field(struct sockaddr_in, sin_port) != sizeof_field(struct sockaddr_in6, sin6_port)); /* Account for sin6_port being smaller than user_port. */ port_size = min(port_size, BPF_LDST_BYTES(si)); SOCK_ADDR_LOAD_OR_STORE_NESTED_FIELD_SIZE_OFF( struct bpf_sock_addr_kern, struct sockaddr_in6, uaddr, sin6_port, bytes_to_bpf_size(port_size), 0, tmp_reg); break; case offsetof(struct bpf_sock_addr, family): SOCK_ADDR_LOAD_NESTED_FIELD(struct bpf_sock_addr_kern, struct sock, sk, sk_family); break; case offsetof(struct bpf_sock_addr, type): SOCK_ADDR_LOAD_NESTED_FIELD(struct bpf_sock_addr_kern, struct sock, sk, sk_type); break; case offsetof(struct bpf_sock_addr, protocol): SOCK_ADDR_LOAD_NESTED_FIELD(struct bpf_sock_addr_kern, struct sock, sk, sk_protocol); break; case offsetof(struct bpf_sock_addr, msg_src_ip4): /* Treat t_ctx as struct in_addr for msg_src_ip4. */ SOCK_ADDR_LOAD_OR_STORE_NESTED_FIELD_SIZE_OFF( struct bpf_sock_addr_kern, struct in_addr, t_ctx, s_addr, BPF_SIZE(si->code), 0, tmp_reg); break; case bpf_ctx_range_till(struct bpf_sock_addr, msg_src_ip6[0], msg_src_ip6[3]): off = si->off; off -= offsetof(struct bpf_sock_addr, msg_src_ip6[0]); /* Treat t_ctx as struct in6_addr for msg_src_ip6. */ SOCK_ADDR_LOAD_OR_STORE_NESTED_FIELD_SIZE_OFF( struct bpf_sock_addr_kern, struct in6_addr, t_ctx, s6_addr32[0], BPF_SIZE(si->code), off, tmp_reg); break; case offsetof(struct bpf_sock_addr, sk): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_addr_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_addr_kern, sk)); break; } return insn - insn_buf; } static u32 sock_ops_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; int off; /* Helper macro for adding read access to tcp_sock or sock fields. */ #define SOCK_OPS_GET_FIELD(BPF_FIELD, OBJ_FIELD, OBJ) \ do { \ int fullsock_reg = si->dst_reg, reg = BPF_REG_9, jmp = 2; \ BUILD_BUG_ON(sizeof_field(OBJ, OBJ_FIELD) > \ sizeof_field(struct bpf_sock_ops, BPF_FIELD)); \ if (si->dst_reg == reg || si->src_reg == reg) \ reg--; \ if (si->dst_reg == reg || si->src_reg == reg) \ reg--; \ if (si->dst_reg == si->src_reg) { \ *insn++ = BPF_STX_MEM(BPF_DW, si->src_reg, reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ fullsock_reg = reg; \ jmp += 2; \ } \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( \ struct bpf_sock_ops_kern, \ is_locked_tcp_sock), \ fullsock_reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, \ is_locked_tcp_sock)); \ *insn++ = BPF_JMP_IMM(BPF_JEQ, fullsock_reg, 0, jmp); \ if (si->dst_reg == si->src_reg) \ *insn++ = BPF_LDX_MEM(BPF_DW, reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( \ struct bpf_sock_ops_kern, sk),\ si->dst_reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, sk));\ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(OBJ, \ OBJ_FIELD), \ si->dst_reg, si->dst_reg, \ offsetof(OBJ, OBJ_FIELD)); \ if (si->dst_reg == si->src_reg) { \ *insn++ = BPF_JMP_A(1); \ *insn++ = BPF_LDX_MEM(BPF_DW, reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ } \ } while (0) #define SOCK_OPS_GET_SK() \ do { \ int fullsock_reg = si->dst_reg, reg = BPF_REG_9, jmp = 1; \ if (si->dst_reg == reg || si->src_reg == reg) \ reg--; \ if (si->dst_reg == reg || si->src_reg == reg) \ reg--; \ if (si->dst_reg == si->src_reg) { \ *insn++ = BPF_STX_MEM(BPF_DW, si->src_reg, reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ fullsock_reg = reg; \ jmp += 2; \ } \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( \ struct bpf_sock_ops_kern, \ is_fullsock), \ fullsock_reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, \ is_fullsock)); \ *insn++ = BPF_JMP_IMM(BPF_JEQ, fullsock_reg, 0, jmp); \ if (si->dst_reg == si->src_reg) \ *insn++ = BPF_LDX_MEM(BPF_DW, reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( \ struct bpf_sock_ops_kern, sk),\ si->dst_reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, sk));\ if (si->dst_reg == si->src_reg) { \ *insn++ = BPF_JMP_A(1); \ *insn++ = BPF_LDX_MEM(BPF_DW, reg, si->src_reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ } \ } while (0) #define SOCK_OPS_GET_TCP_SOCK_FIELD(FIELD) \ SOCK_OPS_GET_FIELD(FIELD, FIELD, struct tcp_sock) /* Helper macro for adding write access to tcp_sock or sock fields. * The macro is called with two registers, dst_reg which contains a pointer * to ctx (context) and src_reg which contains the value that should be * stored. However, we need an additional register since we cannot overwrite * dst_reg because it may be used later in the program. * Instead we "borrow" one of the other register. We first save its value * into a new (temp) field in bpf_sock_ops_kern, use it, and then restore * it at the end of the macro. */ #define SOCK_OPS_SET_FIELD(BPF_FIELD, OBJ_FIELD, OBJ) \ do { \ int reg = BPF_REG_9; \ BUILD_BUG_ON(sizeof_field(OBJ, OBJ_FIELD) > \ sizeof_field(struct bpf_sock_ops, BPF_FIELD)); \ if (si->dst_reg == reg || si->src_reg == reg) \ reg--; \ if (si->dst_reg == reg || si->src_reg == reg) \ reg--; \ *insn++ = BPF_STX_MEM(BPF_DW, si->dst_reg, reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( \ struct bpf_sock_ops_kern, \ is_locked_tcp_sock), \ reg, si->dst_reg, \ offsetof(struct bpf_sock_ops_kern, \ is_locked_tcp_sock)); \ *insn++ = BPF_JMP_IMM(BPF_JEQ, reg, 0, 2); \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( \ struct bpf_sock_ops_kern, sk),\ reg, si->dst_reg, \ offsetof(struct bpf_sock_ops_kern, sk));\ *insn++ = BPF_RAW_INSN(BPF_FIELD_SIZEOF(OBJ, OBJ_FIELD) | \ BPF_MEM | BPF_CLASS(si->code), \ reg, si->src_reg, \ offsetof(OBJ, OBJ_FIELD), \ si->imm); \ *insn++ = BPF_LDX_MEM(BPF_DW, reg, si->dst_reg, \ offsetof(struct bpf_sock_ops_kern, \ temp)); \ } while (0) #define SOCK_OPS_GET_OR_SET_FIELD(BPF_FIELD, OBJ_FIELD, OBJ, TYPE) \ do { \ if (TYPE == BPF_WRITE) \ SOCK_OPS_SET_FIELD(BPF_FIELD, OBJ_FIELD, OBJ); \ else \ SOCK_OPS_GET_FIELD(BPF_FIELD, OBJ_FIELD, OBJ); \ } while (0) switch (si->off) { case offsetof(struct bpf_sock_ops, op): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_ops_kern, op), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, op)); break; case offsetof(struct bpf_sock_ops, replylong[0]) ... offsetof(struct bpf_sock_ops, replylong[3]): BUILD_BUG_ON(sizeof_field(struct bpf_sock_ops, reply) != sizeof_field(struct bpf_sock_ops_kern, reply)); BUILD_BUG_ON(sizeof_field(struct bpf_sock_ops, replylong) != sizeof_field(struct bpf_sock_ops_kern, replylong)); off = si->off; off -= offsetof(struct bpf_sock_ops, replylong[0]); off += offsetof(struct bpf_sock_ops_kern, replylong[0]); if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_W, si, off); else *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, off); break; case offsetof(struct bpf_sock_ops, family): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_family) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_family)); break; case offsetof(struct bpf_sock_ops, remote_ip4): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_daddr) != 4); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_daddr)); break; case offsetof(struct bpf_sock_ops, local_ip4): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_rcv_saddr) != 4); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_rcv_saddr)); break; case offsetof(struct bpf_sock_ops, remote_ip6[0]) ... offsetof(struct bpf_sock_ops, remote_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) BUILD_BUG_ON(sizeof_field(struct sock_common, skc_v6_daddr.s6_addr32[0]) != 4); off = si->off; off -= offsetof(struct bpf_sock_ops, remote_ip6[0]); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_v6_daddr.s6_addr32[0]) + off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; case offsetof(struct bpf_sock_ops, local_ip6[0]) ... offsetof(struct bpf_sock_ops, local_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) BUILD_BUG_ON(sizeof_field(struct sock_common, skc_v6_rcv_saddr.s6_addr32[0]) != 4); off = si->off; off -= offsetof(struct bpf_sock_ops, local_ip6[0]); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_v6_rcv_saddr.s6_addr32[0]) + off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; case offsetof(struct bpf_sock_ops, remote_port): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_dport) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_dport)); #ifndef __BIG_ENDIAN_BITFIELD *insn++ = BPF_ALU32_IMM(BPF_LSH, si->dst_reg, 16); #endif break; case offsetof(struct bpf_sock_ops, local_port): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_num) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_num)); break; case offsetof(struct bpf_sock_ops, is_fullsock): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, is_fullsock), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, is_fullsock)); break; case offsetof(struct bpf_sock_ops, state): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_state) != 1); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_B, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_state)); break; case offsetof(struct bpf_sock_ops, rtt_min): BUILD_BUG_ON(sizeof_field(struct tcp_sock, rtt_min) != sizeof(struct minmax)); BUILD_BUG_ON(sizeof(struct minmax) < sizeof(struct minmax_sample)); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct bpf_sock_ops_kern, sk), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct tcp_sock, rtt_min) + sizeof_field(struct minmax_sample, t)); break; case offsetof(struct bpf_sock_ops, bpf_sock_ops_cb_flags): SOCK_OPS_GET_FIELD(bpf_sock_ops_cb_flags, bpf_sock_ops_cb_flags, struct tcp_sock); break; case offsetof(struct bpf_sock_ops, sk_txhash): SOCK_OPS_GET_OR_SET_FIELD(sk_txhash, sk_txhash, struct sock, type); break; case offsetof(struct bpf_sock_ops, snd_cwnd): SOCK_OPS_GET_TCP_SOCK_FIELD(snd_cwnd); break; case offsetof(struct bpf_sock_ops, srtt_us): SOCK_OPS_GET_TCP_SOCK_FIELD(srtt_us); break; case offsetof(struct bpf_sock_ops, snd_ssthresh): SOCK_OPS_GET_TCP_SOCK_FIELD(snd_ssthresh); break; case offsetof(struct bpf_sock_ops, rcv_nxt): SOCK_OPS_GET_TCP_SOCK_FIELD(rcv_nxt); break; case offsetof(struct bpf_sock_ops, snd_nxt): SOCK_OPS_GET_TCP_SOCK_FIELD(snd_nxt); break; case offsetof(struct bpf_sock_ops, snd_una): SOCK_OPS_GET_TCP_SOCK_FIELD(snd_una); break; case offsetof(struct bpf_sock_ops, mss_cache): SOCK_OPS_GET_TCP_SOCK_FIELD(mss_cache); break; case offsetof(struct bpf_sock_ops, ecn_flags): SOCK_OPS_GET_TCP_SOCK_FIELD(ecn_flags); break; case offsetof(struct bpf_sock_ops, rate_delivered): SOCK_OPS_GET_TCP_SOCK_FIELD(rate_delivered); break; case offsetof(struct bpf_sock_ops, rate_interval_us): SOCK_OPS_GET_TCP_SOCK_FIELD(rate_interval_us); break; case offsetof(struct bpf_sock_ops, packets_out): SOCK_OPS_GET_TCP_SOCK_FIELD(packets_out); break; case offsetof(struct bpf_sock_ops, retrans_out): SOCK_OPS_GET_TCP_SOCK_FIELD(retrans_out); break; case offsetof(struct bpf_sock_ops, total_retrans): SOCK_OPS_GET_TCP_SOCK_FIELD(total_retrans); break; case offsetof(struct bpf_sock_ops, segs_in): SOCK_OPS_GET_TCP_SOCK_FIELD(segs_in); break; case offsetof(struct bpf_sock_ops, data_segs_in): SOCK_OPS_GET_TCP_SOCK_FIELD(data_segs_in); break; case offsetof(struct bpf_sock_ops, segs_out): SOCK_OPS_GET_TCP_SOCK_FIELD(segs_out); break; case offsetof(struct bpf_sock_ops, data_segs_out): SOCK_OPS_GET_TCP_SOCK_FIELD(data_segs_out); break; case offsetof(struct bpf_sock_ops, lost_out): SOCK_OPS_GET_TCP_SOCK_FIELD(lost_out); break; case offsetof(struct bpf_sock_ops, sacked_out): SOCK_OPS_GET_TCP_SOCK_FIELD(sacked_out); break; case offsetof(struct bpf_sock_ops, bytes_received): SOCK_OPS_GET_TCP_SOCK_FIELD(bytes_received); break; case offsetof(struct bpf_sock_ops, bytes_acked): SOCK_OPS_GET_TCP_SOCK_FIELD(bytes_acked); break; case offsetof(struct bpf_sock_ops, sk): SOCK_OPS_GET_SK(); break; case offsetof(struct bpf_sock_ops, skb_data_end): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_ops_kern, skb_data_end), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, skb_data_end)); break; case offsetof(struct bpf_sock_ops, skb_data): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_ops_kern, skb), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, skb)); *insn++ = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, 1); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, data), si->dst_reg, si->dst_reg, offsetof(struct sk_buff, data)); break; case offsetof(struct bpf_sock_ops, skb_len): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_ops_kern, skb), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, skb)); *insn++ = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, 1); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, len), si->dst_reg, si->dst_reg, offsetof(struct sk_buff, len)); break; case offsetof(struct bpf_sock_ops, skb_tcp_flags): off = offsetof(struct sk_buff, cb); off += offsetof(struct tcp_skb_cb, tcp_flags); *target_size = sizeof_field(struct tcp_skb_cb, tcp_flags); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_ops_kern, skb), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, skb)); *insn++ = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, 1); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct tcp_skb_cb, tcp_flags), si->dst_reg, si->dst_reg, off); break; case offsetof(struct bpf_sock_ops, skb_hwtstamp): { struct bpf_insn *jmp_on_null_skb; *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_ops_kern, skb), si->dst_reg, si->src_reg, offsetof(struct bpf_sock_ops_kern, skb)); /* Reserve one insn to test skb == NULL */ jmp_on_null_skb = insn++; insn = bpf_convert_shinfo_access(si->dst_reg, si->dst_reg, insn); *insn++ = BPF_LDX_MEM(BPF_DW, si->dst_reg, si->dst_reg, bpf_target_off(struct skb_shared_info, hwtstamps, 8, target_size)); *jmp_on_null_skb = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, insn - jmp_on_null_skb - 1); break; } } return insn - insn_buf; } /* data_end = skb->data + skb_headlen() */ static struct bpf_insn *bpf_convert_data_end_access(const struct bpf_insn *si, struct bpf_insn *insn) { int reg; int temp_reg_off = offsetof(struct sk_buff, cb) + offsetof(struct sk_skb_cb, temp_reg); if (si->src_reg == si->dst_reg) { /* We need an extra register, choose and save a register. */ reg = BPF_REG_9; if (si->src_reg == reg || si->dst_reg == reg) reg--; if (si->src_reg == reg || si->dst_reg == reg) reg--; *insn++ = BPF_STX_MEM(BPF_DW, si->src_reg, reg, temp_reg_off); } else { reg = si->dst_reg; } /* reg = skb->data */ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, data), reg, si->src_reg, offsetof(struct sk_buff, data)); /* AX = skb->len */ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, len), BPF_REG_AX, si->src_reg, offsetof(struct sk_buff, len)); /* reg = skb->data + skb->len */ *insn++ = BPF_ALU64_REG(BPF_ADD, reg, BPF_REG_AX); /* AX = skb->data_len */ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, data_len), BPF_REG_AX, si->src_reg, offsetof(struct sk_buff, data_len)); /* reg = skb->data + skb->len - skb->data_len */ *insn++ = BPF_ALU64_REG(BPF_SUB, reg, BPF_REG_AX); if (si->src_reg == si->dst_reg) { /* Restore the saved register */ *insn++ = BPF_MOV64_REG(BPF_REG_AX, si->src_reg); *insn++ = BPF_MOV64_REG(si->dst_reg, reg); *insn++ = BPF_LDX_MEM(BPF_DW, reg, BPF_REG_AX, temp_reg_off); } return insn; } static u32 sk_skb_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; int off; switch (si->off) { case offsetof(struct __sk_buff, data_end): insn = bpf_convert_data_end_access(si, insn); break; case offsetof(struct __sk_buff, cb[0]) ... offsetofend(struct __sk_buff, cb[4]) - 1: BUILD_BUG_ON(sizeof_field(struct sk_skb_cb, data) < 20); BUILD_BUG_ON((offsetof(struct sk_buff, cb) + offsetof(struct sk_skb_cb, data)) % sizeof(__u64)); prog->cb_access = 1; off = si->off; off -= offsetof(struct __sk_buff, cb[0]); off += offsetof(struct sk_buff, cb); off += offsetof(struct sk_skb_cb, data); if (type == BPF_WRITE) *insn++ = BPF_EMIT_STORE(BPF_SIZE(si->code), si, off); else *insn++ = BPF_LDX_MEM(BPF_SIZE(si->code), si->dst_reg, si->src_reg, off); break; default: return bpf_convert_ctx_access(type, si, insn_buf, prog, target_size); } return insn - insn_buf; } static u32 sk_msg_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; #if IS_ENABLED(CONFIG_IPV6) int off; #endif /* convert ctx uses the fact sg element is first in struct */ BUILD_BUG_ON(offsetof(struct sk_msg, sg) != 0); switch (si->off) { case offsetof(struct sk_msg_md, data): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_msg, data), si->dst_reg, si->src_reg, offsetof(struct sk_msg, data)); break; case offsetof(struct sk_msg_md, data_end): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_msg, data_end), si->dst_reg, si->src_reg, offsetof(struct sk_msg, data_end)); break; case offsetof(struct sk_msg_md, family): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_family) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_family)); break; case offsetof(struct sk_msg_md, remote_ip4): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_daddr) != 4); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_daddr)); break; case offsetof(struct sk_msg_md, local_ip4): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_rcv_saddr) != 4); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_rcv_saddr)); break; case offsetof(struct sk_msg_md, remote_ip6[0]) ... offsetof(struct sk_msg_md, remote_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) BUILD_BUG_ON(sizeof_field(struct sock_common, skc_v6_daddr.s6_addr32[0]) != 4); off = si->off; off -= offsetof(struct sk_msg_md, remote_ip6[0]); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_v6_daddr.s6_addr32[0]) + off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; case offsetof(struct sk_msg_md, local_ip6[0]) ... offsetof(struct sk_msg_md, local_ip6[3]): #if IS_ENABLED(CONFIG_IPV6) BUILD_BUG_ON(sizeof_field(struct sock_common, skc_v6_rcv_saddr.s6_addr32[0]) != 4); off = si->off; off -= offsetof(struct sk_msg_md, local_ip6[0]); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_v6_rcv_saddr.s6_addr32[0]) + off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; case offsetof(struct sk_msg_md, remote_port): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_dport) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_dport)); #ifndef __BIG_ENDIAN_BITFIELD *insn++ = BPF_ALU32_IMM(BPF_LSH, si->dst_reg, 16); #endif break; case offsetof(struct sk_msg_md, local_port): BUILD_BUG_ON(sizeof_field(struct sock_common, skc_num) != 2); *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF( struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->dst_reg, offsetof(struct sock_common, skc_num)); break; case offsetof(struct sk_msg_md, size): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_msg_sg, size), si->dst_reg, si->src_reg, offsetof(struct sk_msg_sg, size)); break; case offsetof(struct sk_msg_md, sk): *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_msg, sk), si->dst_reg, si->src_reg, offsetof(struct sk_msg, sk)); break; } return insn - insn_buf; } const struct bpf_verifier_ops sk_filter_verifier_ops = { .get_func_proto = sk_filter_func_proto, .is_valid_access = sk_filter_is_valid_access, .convert_ctx_access = bpf_convert_ctx_access, .gen_ld_abs = bpf_gen_ld_abs, }; const struct bpf_prog_ops sk_filter_prog_ops = { .test_run = bpf_prog_test_run_skb, }; const struct bpf_verifier_ops tc_cls_act_verifier_ops = { .get_func_proto = tc_cls_act_func_proto, .is_valid_access = tc_cls_act_is_valid_access, .convert_ctx_access = tc_cls_act_convert_ctx_access, .gen_prologue = tc_cls_act_prologue, .gen_ld_abs = bpf_gen_ld_abs, .btf_struct_access = tc_cls_act_btf_struct_access, }; const struct bpf_prog_ops tc_cls_act_prog_ops = { .test_run = bpf_prog_test_run_skb, }; const struct bpf_verifier_ops xdp_verifier_ops = { .get_func_proto = xdp_func_proto, .is_valid_access = xdp_is_valid_access, .convert_ctx_access = xdp_convert_ctx_access, .gen_prologue = bpf_noop_prologue, .btf_struct_access = xdp_btf_struct_access, }; const struct bpf_prog_ops xdp_prog_ops = { .test_run = bpf_prog_test_run_xdp, }; const struct bpf_verifier_ops cg_skb_verifier_ops = { .get_func_proto = cg_skb_func_proto, .is_valid_access = cg_skb_is_valid_access, .convert_ctx_access = bpf_convert_ctx_access, }; const struct bpf_prog_ops cg_skb_prog_ops = { .test_run = bpf_prog_test_run_skb, }; const struct bpf_verifier_ops lwt_in_verifier_ops = { .get_func_proto = lwt_in_func_proto, .is_valid_access = lwt_is_valid_access, .convert_ctx_access = bpf_convert_ctx_access, }; const struct bpf_prog_ops lwt_in_prog_ops = { .test_run = bpf_prog_test_run_skb, }; const struct bpf_verifier_ops lwt_out_verifier_ops = { .get_func_proto = lwt_out_func_proto, .is_valid_access = lwt_is_valid_access, .convert_ctx_access = bpf_convert_ctx_access, }; const struct bpf_prog_ops lwt_out_prog_ops = { .test_run = bpf_prog_test_run_skb, }; const struct bpf_verifier_ops lwt_xmit_verifier_ops = { .get_func_proto = lwt_xmit_func_proto, .is_valid_access = lwt_is_valid_access, .convert_ctx_access = bpf_convert_ctx_access, .gen_prologue = tc_cls_act_prologue, }; const struct bpf_prog_ops lwt_xmit_prog_ops = { .test_run = bpf_prog_test_run_skb, }; const struct bpf_verifier_ops lwt_seg6local_verifier_ops = { .get_func_proto = lwt_seg6local_func_proto, .is_valid_access = lwt_is_valid_access, .convert_ctx_access = bpf_convert_ctx_access, }; const struct bpf_prog_ops lwt_seg6local_prog_ops = { }; const struct bpf_verifier_ops cg_sock_verifier_ops = { .get_func_proto = sock_filter_func_proto, .is_valid_access = sock_filter_is_valid_access, .convert_ctx_access = bpf_sock_convert_ctx_access, }; const struct bpf_prog_ops cg_sock_prog_ops = { }; const struct bpf_verifier_ops cg_sock_addr_verifier_ops = { .get_func_proto = sock_addr_func_proto, .is_valid_access = sock_addr_is_valid_access, .convert_ctx_access = sock_addr_convert_ctx_access, }; const struct bpf_prog_ops cg_sock_addr_prog_ops = { }; const struct bpf_verifier_ops sock_ops_verifier_ops = { .get_func_proto = sock_ops_func_proto, .is_valid_access = sock_ops_is_valid_access, .convert_ctx_access = sock_ops_convert_ctx_access, }; const struct bpf_prog_ops sock_ops_prog_ops = { }; const struct bpf_verifier_ops sk_skb_verifier_ops = { .get_func_proto = sk_skb_func_proto, .is_valid_access = sk_skb_is_valid_access, .convert_ctx_access = sk_skb_convert_ctx_access, .gen_prologue = sk_skb_prologue, }; const struct bpf_prog_ops sk_skb_prog_ops = { }; const struct bpf_verifier_ops sk_msg_verifier_ops = { .get_func_proto = sk_msg_func_proto, .is_valid_access = sk_msg_is_valid_access, .convert_ctx_access = sk_msg_convert_ctx_access, .gen_prologue = bpf_noop_prologue, }; const struct bpf_prog_ops sk_msg_prog_ops = { }; const struct bpf_verifier_ops flow_dissector_verifier_ops = { .get_func_proto = flow_dissector_func_proto, .is_valid_access = flow_dissector_is_valid_access, .convert_ctx_access = flow_dissector_convert_ctx_access, }; const struct bpf_prog_ops flow_dissector_prog_ops = { .test_run = bpf_prog_test_run_flow_dissector, }; int sk_detach_filter(struct sock *sk) { int ret = -ENOENT; struct sk_filter *filter; if (sock_flag(sk, SOCK_FILTER_LOCKED)) return -EPERM; filter = rcu_dereference_protected(sk->sk_filter, lockdep_sock_is_held(sk)); if (filter) { RCU_INIT_POINTER(sk->sk_filter, NULL); sk_filter_uncharge(sk, filter); ret = 0; } return ret; } EXPORT_SYMBOL_GPL(sk_detach_filter); int sk_get_filter(struct sock *sk, sockptr_t optval, unsigned int len) { struct sock_fprog_kern *fprog; struct sk_filter *filter; int ret = 0; sockopt_lock_sock(sk); filter = rcu_dereference_protected(sk->sk_filter, lockdep_sock_is_held(sk)); if (!filter) goto out; /* We're copying the filter that has been originally attached, * so no conversion/decode needed anymore. eBPF programs that * have no original program cannot be dumped through this. */ ret = -EACCES; fprog = filter->prog->orig_prog; if (!fprog) goto out; ret = fprog->len; if (!len) /* User space only enquires number of filter blocks. */ goto out; ret = -EINVAL; if (len < fprog->len) goto out; ret = -EFAULT; if (copy_to_sockptr(optval, fprog->filter, bpf_classic_proglen(fprog))) goto out; /* Instead of bytes, the API requests to return the number * of filter blocks. */ ret = fprog->len; out: sockopt_release_sock(sk); return ret; } #ifdef CONFIG_INET static void bpf_init_reuseport_kern(struct sk_reuseport_kern *reuse_kern, struct sock_reuseport *reuse, struct sock *sk, struct sk_buff *skb, struct sock *migrating_sk, u32 hash) { reuse_kern->skb = skb; reuse_kern->sk = sk; reuse_kern->selected_sk = NULL; reuse_kern->migrating_sk = migrating_sk; reuse_kern->data_end = skb->data + skb_headlen(skb); reuse_kern->hash = hash; reuse_kern->reuseport_id = reuse->reuseport_id; reuse_kern->bind_inany = reuse->bind_inany; } struct sock *bpf_run_sk_reuseport(struct sock_reuseport *reuse, struct sock *sk, struct bpf_prog *prog, struct sk_buff *skb, struct sock *migrating_sk, u32 hash) { struct sk_reuseport_kern reuse_kern; enum sk_action action; bpf_init_reuseport_kern(&reuse_kern, reuse, sk, skb, migrating_sk, hash); action = bpf_prog_run(prog, &reuse_kern); if (action == SK_PASS) return reuse_kern.selected_sk; else return ERR_PTR(-ECONNREFUSED); } BPF_CALL_4(sk_select_reuseport, struct sk_reuseport_kern *, reuse_kern, struct bpf_map *, map, void *, key, u32, flags) { bool is_sockarray = map->map_type == BPF_MAP_TYPE_REUSEPORT_SOCKARRAY; struct sock_reuseport *reuse; struct sock *selected_sk; int err; selected_sk = map->ops->map_lookup_elem(map, key); if (!selected_sk) return -ENOENT; reuse = rcu_dereference(selected_sk->sk_reuseport_cb); if (!reuse) { /* reuseport_array has only sk with non NULL sk_reuseport_cb. * The only (!reuse) case here is - the sk has already been * unhashed (e.g. by close()), so treat it as -ENOENT. * * Other maps (e.g. sock_map) do not provide this guarantee and * the sk may never be in the reuseport group to begin with. */ err = is_sockarray ? -ENOENT : -EINVAL; goto error; } if (unlikely(reuse->reuseport_id != reuse_kern->reuseport_id)) { struct sock *sk = reuse_kern->sk; if (sk->sk_protocol != selected_sk->sk_protocol) { err = -EPROTOTYPE; } else if (sk->sk_family != selected_sk->sk_family) { err = -EAFNOSUPPORT; } else { /* Catch all. Likely bound to a different sockaddr. */ err = -EBADFD; } goto error; } reuse_kern->selected_sk = selected_sk; return 0; error: /* Lookup in sock_map can return TCP ESTABLISHED sockets. */ if (sk_is_refcounted(selected_sk)) sock_put(selected_sk); return err; } static const struct bpf_func_proto sk_select_reuseport_proto = { .func = sk_select_reuseport, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_PTR_TO_MAP_KEY, .arg4_type = ARG_ANYTHING, }; BPF_CALL_4(sk_reuseport_load_bytes, const struct sk_reuseport_kern *, reuse_kern, u32, offset, void *, to, u32, len) { return ____bpf_skb_load_bytes(reuse_kern->skb, offset, to, len); } static const struct bpf_func_proto sk_reuseport_load_bytes_proto = { .func = sk_reuseport_load_bytes, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, }; BPF_CALL_5(sk_reuseport_load_bytes_relative, const struct sk_reuseport_kern *, reuse_kern, u32, offset, void *, to, u32, len, u32, start_header) { return ____bpf_skb_load_bytes_relative(reuse_kern->skb, offset, to, len, start_header); } static const struct bpf_func_proto sk_reuseport_load_bytes_relative_proto = { .func = sk_reuseport_load_bytes_relative, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_ANYTHING, .arg3_type = ARG_PTR_TO_UNINIT_MEM, .arg4_type = ARG_CONST_SIZE, .arg5_type = ARG_ANYTHING, }; static const struct bpf_func_proto * sk_reuseport_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_sk_select_reuseport: return &sk_select_reuseport_proto; case BPF_FUNC_skb_load_bytes: return &sk_reuseport_load_bytes_proto; case BPF_FUNC_skb_load_bytes_relative: return &sk_reuseport_load_bytes_relative_proto; case BPF_FUNC_get_socket_cookie: return &bpf_get_socket_ptr_cookie_proto; case BPF_FUNC_ktime_get_coarse_ns: return &bpf_ktime_get_coarse_ns_proto; default: return bpf_base_func_proto(func_id, prog); } } static bool sk_reuseport_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { const u32 size_default = sizeof(__u32); if (off < 0 || off >= sizeof(struct sk_reuseport_md) || off % size || type != BPF_READ) return false; switch (off) { case offsetof(struct sk_reuseport_md, data): info->reg_type = PTR_TO_PACKET; return size == sizeof(__u64); case offsetof(struct sk_reuseport_md, data_end): info->reg_type = PTR_TO_PACKET_END; return size == sizeof(__u64); case offsetof(struct sk_reuseport_md, hash): return size == size_default; case offsetof(struct sk_reuseport_md, sk): info->reg_type = PTR_TO_SOCKET; return size == sizeof(__u64); case offsetof(struct sk_reuseport_md, migrating_sk): info->reg_type = PTR_TO_SOCK_COMMON_OR_NULL; return size == sizeof(__u64); /* Fields that allow narrowing */ case bpf_ctx_range(struct sk_reuseport_md, eth_protocol): if (size < sizeof_field(struct sk_buff, protocol)) return false; fallthrough; case bpf_ctx_range(struct sk_reuseport_md, ip_protocol): case bpf_ctx_range(struct sk_reuseport_md, bind_inany): case bpf_ctx_range(struct sk_reuseport_md, len): bpf_ctx_record_field_size(info, size_default); return bpf_ctx_narrow_access_ok(off, size, size_default); default: return false; } } #define SK_REUSEPORT_LOAD_FIELD(F) ({ \ *insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_reuseport_kern, F), \ si->dst_reg, si->src_reg, \ bpf_target_off(struct sk_reuseport_kern, F, \ sizeof_field(struct sk_reuseport_kern, F), \ target_size)); \ }) #define SK_REUSEPORT_LOAD_SKB_FIELD(SKB_FIELD) \ SOCK_ADDR_LOAD_NESTED_FIELD(struct sk_reuseport_kern, \ struct sk_buff, \ skb, \ SKB_FIELD) #define SK_REUSEPORT_LOAD_SK_FIELD(SK_FIELD) \ SOCK_ADDR_LOAD_NESTED_FIELD(struct sk_reuseport_kern, \ struct sock, \ sk, \ SK_FIELD) static u32 sk_reuseport_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; switch (si->off) { case offsetof(struct sk_reuseport_md, data): SK_REUSEPORT_LOAD_SKB_FIELD(data); break; case offsetof(struct sk_reuseport_md, len): SK_REUSEPORT_LOAD_SKB_FIELD(len); break; case offsetof(struct sk_reuseport_md, eth_protocol): SK_REUSEPORT_LOAD_SKB_FIELD(protocol); break; case offsetof(struct sk_reuseport_md, ip_protocol): SK_REUSEPORT_LOAD_SK_FIELD(sk_protocol); break; case offsetof(struct sk_reuseport_md, data_end): SK_REUSEPORT_LOAD_FIELD(data_end); break; case offsetof(struct sk_reuseport_md, hash): SK_REUSEPORT_LOAD_FIELD(hash); break; case offsetof(struct sk_reuseport_md, bind_inany): SK_REUSEPORT_LOAD_FIELD(bind_inany); break; case offsetof(struct sk_reuseport_md, sk): SK_REUSEPORT_LOAD_FIELD(sk); break; case offsetof(struct sk_reuseport_md, migrating_sk): SK_REUSEPORT_LOAD_FIELD(migrating_sk); break; } return insn - insn_buf; } const struct bpf_verifier_ops sk_reuseport_verifier_ops = { .get_func_proto = sk_reuseport_func_proto, .is_valid_access = sk_reuseport_is_valid_access, .convert_ctx_access = sk_reuseport_convert_ctx_access, }; const struct bpf_prog_ops sk_reuseport_prog_ops = { }; DEFINE_STATIC_KEY_FALSE(bpf_sk_lookup_enabled); EXPORT_SYMBOL(bpf_sk_lookup_enabled); BPF_CALL_3(bpf_sk_lookup_assign, struct bpf_sk_lookup_kern *, ctx, struct sock *, sk, u64, flags) { if (unlikely(flags & ~(BPF_SK_LOOKUP_F_REPLACE | BPF_SK_LOOKUP_F_NO_REUSEPORT))) return -EINVAL; if (unlikely(sk && sk_is_refcounted(sk))) return -ESOCKTNOSUPPORT; /* reject non-RCU freed sockets */ if (unlikely(sk && sk_is_tcp(sk) && sk->sk_state != TCP_LISTEN)) return -ESOCKTNOSUPPORT; /* only accept TCP socket in LISTEN */ if (unlikely(sk && sk_is_udp(sk) && sk->sk_state != TCP_CLOSE)) return -ESOCKTNOSUPPORT; /* only accept UDP socket in CLOSE */ /* Check if socket is suitable for packet L3/L4 protocol */ if (sk && sk->sk_protocol != ctx->protocol) return -EPROTOTYPE; if (sk && sk->sk_family != ctx->family && (sk->sk_family == AF_INET || ipv6_only_sock(sk))) return -EAFNOSUPPORT; if (ctx->selected_sk && !(flags & BPF_SK_LOOKUP_F_REPLACE)) return -EEXIST; /* Select socket as lookup result */ ctx->selected_sk = sk; ctx->no_reuseport = flags & BPF_SK_LOOKUP_F_NO_REUSEPORT; return 0; } static const struct bpf_func_proto bpf_sk_lookup_assign_proto = { .func = bpf_sk_lookup_assign, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, .arg2_type = ARG_PTR_TO_SOCKET_OR_NULL, .arg3_type = ARG_ANYTHING, }; static const struct bpf_func_proto * sk_lookup_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_perf_event_output: return &bpf_event_output_data_proto; case BPF_FUNC_sk_assign: return &bpf_sk_lookup_assign_proto; case BPF_FUNC_sk_release: return &bpf_sk_release_proto; default: return bpf_sk_base_func_proto(func_id, prog); } } static bool sk_lookup_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { if (off < 0 || off >= sizeof(struct bpf_sk_lookup)) return false; if (off % size != 0) return false; if (type != BPF_READ) return false; switch (off) { case offsetof(struct bpf_sk_lookup, sk): info->reg_type = PTR_TO_SOCKET_OR_NULL; return size == sizeof(__u64); case bpf_ctx_range(struct bpf_sk_lookup, family): case bpf_ctx_range(struct bpf_sk_lookup, protocol): case bpf_ctx_range(struct bpf_sk_lookup, remote_ip4): case bpf_ctx_range(struct bpf_sk_lookup, local_ip4): case bpf_ctx_range_till(struct bpf_sk_lookup, remote_ip6[0], remote_ip6[3]): case bpf_ctx_range_till(struct bpf_sk_lookup, local_ip6[0], local_ip6[3]): case bpf_ctx_range(struct bpf_sk_lookup, local_port): case bpf_ctx_range(struct bpf_sk_lookup, ingress_ifindex): bpf_ctx_record_field_size(info, sizeof(__u32)); return bpf_ctx_narrow_access_ok(off, size, sizeof(__u32)); case bpf_ctx_range(struct bpf_sk_lookup, remote_port): /* Allow 4-byte access to 2-byte field for backward compatibility */ if (size == sizeof(__u32)) return true; bpf_ctx_record_field_size(info, sizeof(__be16)); return bpf_ctx_narrow_access_ok(off, size, sizeof(__be16)); case offsetofend(struct bpf_sk_lookup, remote_port) ... offsetof(struct bpf_sk_lookup, local_ip4) - 1: /* Allow access to zero padding for backward compatibility */ bpf_ctx_record_field_size(info, sizeof(__u16)); return bpf_ctx_narrow_access_ok(off, size, sizeof(__u16)); default: return false; } } static u32 sk_lookup_convert_ctx_access(enum bpf_access_type type, const struct bpf_insn *si, struct bpf_insn *insn_buf, struct bpf_prog *prog, u32 *target_size) { struct bpf_insn *insn = insn_buf; switch (si->off) { case offsetof(struct bpf_sk_lookup, sk): *insn++ = BPF_LDX_MEM(BPF_SIZEOF(void *), si->dst_reg, si->src_reg, offsetof(struct bpf_sk_lookup_kern, selected_sk)); break; case offsetof(struct bpf_sk_lookup, family): *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct bpf_sk_lookup_kern, family, 2, target_size)); break; case offsetof(struct bpf_sk_lookup, protocol): *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct bpf_sk_lookup_kern, protocol, 2, target_size)); break; case offsetof(struct bpf_sk_lookup, remote_ip4): *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct bpf_sk_lookup_kern, v4.saddr, 4, target_size)); break; case offsetof(struct bpf_sk_lookup, local_ip4): *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct bpf_sk_lookup_kern, v4.daddr, 4, target_size)); break; case bpf_ctx_range_till(struct bpf_sk_lookup, remote_ip6[0], remote_ip6[3]): { #if IS_ENABLED(CONFIG_IPV6) int off = si->off; off -= offsetof(struct bpf_sk_lookup, remote_ip6[0]); off += bpf_target_off(struct in6_addr, s6_addr32[0], 4, target_size); *insn++ = BPF_LDX_MEM(BPF_SIZEOF(void *), si->dst_reg, si->src_reg, offsetof(struct bpf_sk_lookup_kern, v6.saddr)); *insn++ = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, 1); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; } case bpf_ctx_range_till(struct bpf_sk_lookup, local_ip6[0], local_ip6[3]): { #if IS_ENABLED(CONFIG_IPV6) int off = si->off; off -= offsetof(struct bpf_sk_lookup, local_ip6[0]); off += bpf_target_off(struct in6_addr, s6_addr32[0], 4, target_size); *insn++ = BPF_LDX_MEM(BPF_SIZEOF(void *), si->dst_reg, si->src_reg, offsetof(struct bpf_sk_lookup_kern, v6.daddr)); *insn++ = BPF_JMP_IMM(BPF_JEQ, si->dst_reg, 0, 1); *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->dst_reg, off); #else *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); #endif break; } case offsetof(struct bpf_sk_lookup, remote_port): *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct bpf_sk_lookup_kern, sport, 2, target_size)); break; case offsetofend(struct bpf_sk_lookup, remote_port): *target_size = 2; *insn++ = BPF_MOV32_IMM(si->dst_reg, 0); break; case offsetof(struct bpf_sk_lookup, local_port): *insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg, bpf_target_off(struct bpf_sk_lookup_kern, dport, 2, target_size)); break; case offsetof(struct bpf_sk_lookup, ingress_ifindex): *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg, bpf_target_off(struct bpf_sk_lookup_kern, ingress_ifindex, 4, target_size)); break; } return insn - insn_buf; } const struct bpf_prog_ops sk_lookup_prog_ops = { .test_run = bpf_prog_test_run_sk_lookup, }; const struct bpf_verifier_ops sk_lookup_verifier_ops = { .get_func_proto = sk_lookup_func_proto, .is_valid_access = sk_lookup_is_valid_access, .convert_ctx_access = sk_lookup_convert_ctx_access, }; #endif /* CONFIG_INET */ DEFINE_BPF_DISPATCHER(xdp) void bpf_prog_change_xdp(struct bpf_prog *prev_prog, struct bpf_prog *prog) { bpf_dispatcher_change_prog(BPF_DISPATCHER_PTR(xdp), prev_prog, prog); } BTF_ID_LIST_GLOBAL(btf_sock_ids, MAX_BTF_SOCK_TYPE) #define BTF_SOCK_TYPE(name, type) BTF_ID(struct, type) BTF_SOCK_TYPE_xxx #undef BTF_SOCK_TYPE BPF_CALL_1(bpf_skc_to_tcp6_sock, struct sock *, sk) { /* tcp6_sock type is not generated in dwarf and hence btf, * trigger an explicit type generation here. */ BTF_TYPE_EMIT(struct tcp6_sock); if (sk && sk_fullsock(sk) && sk->sk_protocol == IPPROTO_TCP && sk->sk_family == AF_INET6) return (unsigned long)sk; return (unsigned long)NULL; } const struct bpf_func_proto bpf_skc_to_tcp6_sock_proto = { .func = bpf_skc_to_tcp6_sock, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .ret_btf_id = &btf_sock_ids[BTF_SOCK_TYPE_TCP6], }; BPF_CALL_1(bpf_skc_to_tcp_sock, struct sock *, sk) { if (sk && sk_fullsock(sk) && sk->sk_protocol == IPPROTO_TCP) return (unsigned long)sk; return (unsigned long)NULL; } const struct bpf_func_proto bpf_skc_to_tcp_sock_proto = { .func = bpf_skc_to_tcp_sock, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .ret_btf_id = &btf_sock_ids[BTF_SOCK_TYPE_TCP], }; BPF_CALL_1(bpf_skc_to_tcp_timewait_sock, struct sock *, sk) { /* BTF types for tcp_timewait_sock and inet_timewait_sock are not * generated if CONFIG_INET=n. Trigger an explicit generation here. */ BTF_TYPE_EMIT(struct inet_timewait_sock); BTF_TYPE_EMIT(struct tcp_timewait_sock); #ifdef CONFIG_INET if (sk && sk->sk_prot == &tcp_prot && sk->sk_state == TCP_TIME_WAIT) return (unsigned long)sk; #endif #if IS_BUILTIN(CONFIG_IPV6) if (sk && sk->sk_prot == &tcpv6_prot && sk->sk_state == TCP_TIME_WAIT) return (unsigned long)sk; #endif return (unsigned long)NULL; } const struct bpf_func_proto bpf_skc_to_tcp_timewait_sock_proto = { .func = bpf_skc_to_tcp_timewait_sock, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .ret_btf_id = &btf_sock_ids[BTF_SOCK_TYPE_TCP_TW], }; BPF_CALL_1(bpf_skc_to_tcp_request_sock, struct sock *, sk) { #ifdef CONFIG_INET if (sk && sk->sk_prot == &tcp_prot && sk->sk_state == TCP_NEW_SYN_RECV) return (unsigned long)sk; #endif #if IS_BUILTIN(CONFIG_IPV6) if (sk && sk->sk_prot == &tcpv6_prot && sk->sk_state == TCP_NEW_SYN_RECV) return (unsigned long)sk; #endif return (unsigned long)NULL; } const struct bpf_func_proto bpf_skc_to_tcp_request_sock_proto = { .func = bpf_skc_to_tcp_request_sock, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .ret_btf_id = &btf_sock_ids[BTF_SOCK_TYPE_TCP_REQ], }; BPF_CALL_1(bpf_skc_to_udp6_sock, struct sock *, sk) { /* udp6_sock type is not generated in dwarf and hence btf, * trigger an explicit type generation here. */ BTF_TYPE_EMIT(struct udp6_sock); if (sk && sk_fullsock(sk) && sk->sk_protocol == IPPROTO_UDP && sk->sk_type == SOCK_DGRAM && sk->sk_family == AF_INET6) return (unsigned long)sk; return (unsigned long)NULL; } const struct bpf_func_proto bpf_skc_to_udp6_sock_proto = { .func = bpf_skc_to_udp6_sock, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .ret_btf_id = &btf_sock_ids[BTF_SOCK_TYPE_UDP6], }; BPF_CALL_1(bpf_skc_to_unix_sock, struct sock *, sk) { /* unix_sock type is not generated in dwarf and hence btf, * trigger an explicit type generation here. */ BTF_TYPE_EMIT(struct unix_sock); if (sk && sk_fullsock(sk) && sk->sk_family == AF_UNIX) return (unsigned long)sk; return (unsigned long)NULL; } const struct bpf_func_proto bpf_skc_to_unix_sock_proto = { .func = bpf_skc_to_unix_sock, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, .ret_btf_id = &btf_sock_ids[BTF_SOCK_TYPE_UNIX], }; BPF_CALL_1(bpf_skc_to_mptcp_sock, struct sock *, sk) { BTF_TYPE_EMIT(struct mptcp_sock); return (unsigned long)bpf_mptcp_sock_from_subflow(sk); } const struct bpf_func_proto bpf_skc_to_mptcp_sock_proto = { .func = bpf_skc_to_mptcp_sock, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .arg1_type = ARG_PTR_TO_SOCK_COMMON, .ret_btf_id = &btf_sock_ids[BTF_SOCK_TYPE_MPTCP], }; BPF_CALL_1(bpf_sock_from_file, struct file *, file) { return (unsigned long)sock_from_file(file); } BTF_ID_LIST(bpf_sock_from_file_btf_ids) BTF_ID(struct, socket) BTF_ID(struct, file) const struct bpf_func_proto bpf_sock_from_file_proto = { .func = bpf_sock_from_file, .gpl_only = false, .ret_type = RET_PTR_TO_BTF_ID_OR_NULL, .ret_btf_id = &bpf_sock_from_file_btf_ids[0], .arg1_type = ARG_PTR_TO_BTF_ID, .arg1_btf_id = &bpf_sock_from_file_btf_ids[1], }; static const struct bpf_func_proto * bpf_sk_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { const struct bpf_func_proto *func; switch (func_id) { case BPF_FUNC_skc_to_tcp6_sock: func = &bpf_skc_to_tcp6_sock_proto; break; case BPF_FUNC_skc_to_tcp_sock: func = &bpf_skc_to_tcp_sock_proto; break; case BPF_FUNC_skc_to_tcp_timewait_sock: func = &bpf_skc_to_tcp_timewait_sock_proto; break; case BPF_FUNC_skc_to_tcp_request_sock: func = &bpf_skc_to_tcp_request_sock_proto; break; case BPF_FUNC_skc_to_udp6_sock: func = &bpf_skc_to_udp6_sock_proto; break; case BPF_FUNC_skc_to_unix_sock: func = &bpf_skc_to_unix_sock_proto; break; case BPF_FUNC_skc_to_mptcp_sock: func = &bpf_skc_to_mptcp_sock_proto; break; case BPF_FUNC_ktime_get_coarse_ns: return &bpf_ktime_get_coarse_ns_proto; default: return bpf_base_func_proto(func_id, prog); } if (!bpf_token_capable(prog->aux->token, CAP_PERFMON)) return NULL; return func; } __bpf_kfunc_start_defs(); __bpf_kfunc int bpf_dynptr_from_skb(struct __sk_buff *s, u64 flags, struct bpf_dynptr *ptr__uninit) { struct bpf_dynptr_kern *ptr = (struct bpf_dynptr_kern *)ptr__uninit; struct sk_buff *skb = (struct sk_buff *)s; if (flags) { bpf_dynptr_set_null(ptr); return -EINVAL; } bpf_dynptr_init(ptr, skb, BPF_DYNPTR_TYPE_SKB, 0, skb->len); return 0; } __bpf_kfunc int bpf_dynptr_from_xdp(struct xdp_md *x, u64 flags, struct bpf_dynptr *ptr__uninit) { struct bpf_dynptr_kern *ptr = (struct bpf_dynptr_kern *)ptr__uninit; struct xdp_buff *xdp = (struct xdp_buff *)x; if (flags) { bpf_dynptr_set_null(ptr); return -EINVAL; } bpf_dynptr_init(ptr, xdp, BPF_DYNPTR_TYPE_XDP, 0, xdp_get_buff_len(xdp)); return 0; } __bpf_kfunc int bpf_sock_addr_set_sun_path(struct bpf_sock_addr_kern *sa_kern, const u8 *sun_path, u32 sun_path__sz) { struct sockaddr_un *un; if (sa_kern->sk->sk_family != AF_UNIX) return -EINVAL; /* We do not allow changing the address to unnamed or larger than the * maximum allowed address size for a unix sockaddr. */ if (sun_path__sz == 0 || sun_path__sz > UNIX_PATH_MAX) return -EINVAL; un = (struct sockaddr_un *)sa_kern->uaddr; memcpy(un->sun_path, sun_path, sun_path__sz); sa_kern->uaddrlen = offsetof(struct sockaddr_un, sun_path) + sun_path__sz; return 0; } __bpf_kfunc int bpf_sk_assign_tcp_reqsk(struct __sk_buff *s, struct sock *sk, struct bpf_tcp_req_attrs *attrs, int attrs__sz) { #if IS_ENABLED(CONFIG_SYN_COOKIES) struct sk_buff *skb = (struct sk_buff *)s; const struct request_sock_ops *ops; struct inet_request_sock *ireq; struct tcp_request_sock *treq; struct request_sock *req; struct net *net; __u16 min_mss; u32 tsoff = 0; if (attrs__sz != sizeof(*attrs) || attrs->reserved[0] || attrs->reserved[1] || attrs->reserved[2]) return -EINVAL; if (!skb_at_tc_ingress(skb)) return -EINVAL; net = dev_net(skb->dev); if (net != sock_net(sk)) return -ENETUNREACH; switch (skb->protocol) { case htons(ETH_P_IP): ops = &tcp_request_sock_ops; min_mss = 536; break; #if IS_BUILTIN(CONFIG_IPV6) case htons(ETH_P_IPV6): ops = &tcp6_request_sock_ops; min_mss = IPV6_MIN_MTU - 60; break; #endif default: return -EINVAL; } if (sk->sk_type != SOCK_STREAM || sk->sk_state != TCP_LISTEN || sk_is_mptcp(sk)) return -EINVAL; if (attrs->mss < min_mss) return -EINVAL; if (attrs->wscale_ok) { if (!READ_ONCE(net->ipv4.sysctl_tcp_window_scaling)) return -EINVAL; if (attrs->snd_wscale > TCP_MAX_WSCALE || attrs->rcv_wscale > TCP_MAX_WSCALE) return -EINVAL; } if (attrs->sack_ok && !READ_ONCE(net->ipv4.sysctl_tcp_sack)) return -EINVAL; if (attrs->tstamp_ok) { if (!READ_ONCE(net->ipv4.sysctl_tcp_timestamps)) return -EINVAL; tsoff = attrs->rcv_tsecr - tcp_ns_to_ts(attrs->usec_ts_ok, tcp_clock_ns()); } req = inet_reqsk_alloc(ops, sk, false); if (!req) return -ENOMEM; ireq = inet_rsk(req); treq = tcp_rsk(req); req->rsk_listener = sk; req->syncookie = 1; req->mss = attrs->mss; req->ts_recent = attrs->rcv_tsval; ireq->snd_wscale = attrs->snd_wscale; ireq->rcv_wscale = attrs->rcv_wscale; ireq->tstamp_ok = !!attrs->tstamp_ok; ireq->sack_ok = !!attrs->sack_ok; ireq->wscale_ok = !!attrs->wscale_ok; ireq->ecn_ok = !!attrs->ecn_ok; treq->req_usec_ts = !!attrs->usec_ts_ok; treq->ts_off = tsoff; skb_orphan(skb); skb->sk = req_to_sk(req); skb->destructor = sock_pfree; return 0; #else return -EOPNOTSUPP; #endif } __bpf_kfunc int bpf_sock_ops_enable_tx_tstamp(struct bpf_sock_ops_kern *skops, u64 flags) { struct sk_buff *skb; if (skops->op != BPF_SOCK_OPS_TSTAMP_SENDMSG_CB) return -EOPNOTSUPP; if (flags) return -EINVAL; skb = skops->skb; skb_shinfo(skb)->tx_flags |= SKBTX_BPF; TCP_SKB_CB(skb)->txstamp_ack |= TSTAMP_ACK_BPF; skb_shinfo(skb)->tskey = TCP_SKB_CB(skb)->seq + skb->len - 1; return 0; } __bpf_kfunc_end_defs(); int bpf_dynptr_from_skb_rdonly(struct __sk_buff *skb, u64 flags, struct bpf_dynptr *ptr__uninit) { struct bpf_dynptr_kern *ptr = (struct bpf_dynptr_kern *)ptr__uninit; int err; err = bpf_dynptr_from_skb(skb, flags, ptr__uninit); if (err) return err; bpf_dynptr_set_rdonly(ptr); return 0; } BTF_KFUNCS_START(bpf_kfunc_check_set_skb) BTF_ID_FLAGS(func, bpf_dynptr_from_skb, KF_TRUSTED_ARGS) BTF_KFUNCS_END(bpf_kfunc_check_set_skb) BTF_KFUNCS_START(bpf_kfunc_check_set_xdp) BTF_ID_FLAGS(func, bpf_dynptr_from_xdp) BTF_KFUNCS_END(bpf_kfunc_check_set_xdp) BTF_KFUNCS_START(bpf_kfunc_check_set_sock_addr) BTF_ID_FLAGS(func, bpf_sock_addr_set_sun_path) BTF_KFUNCS_END(bpf_kfunc_check_set_sock_addr) BTF_KFUNCS_START(bpf_kfunc_check_set_tcp_reqsk) BTF_ID_FLAGS(func, bpf_sk_assign_tcp_reqsk, KF_TRUSTED_ARGS) BTF_KFUNCS_END(bpf_kfunc_check_set_tcp_reqsk) BTF_KFUNCS_START(bpf_kfunc_check_set_sock_ops) BTF_ID_FLAGS(func, bpf_sock_ops_enable_tx_tstamp, KF_TRUSTED_ARGS) BTF_KFUNCS_END(bpf_kfunc_check_set_sock_ops) static const struct btf_kfunc_id_set bpf_kfunc_set_skb = { .owner = THIS_MODULE, .set = &bpf_kfunc_check_set_skb, }; static const struct btf_kfunc_id_set bpf_kfunc_set_xdp = { .owner = THIS_MODULE, .set = &bpf_kfunc_check_set_xdp, }; static const struct btf_kfunc_id_set bpf_kfunc_set_sock_addr = { .owner = THIS_MODULE, .set = &bpf_kfunc_check_set_sock_addr, }; static const struct btf_kfunc_id_set bpf_kfunc_set_tcp_reqsk = { .owner = THIS_MODULE, .set = &bpf_kfunc_check_set_tcp_reqsk, }; static const struct btf_kfunc_id_set bpf_kfunc_set_sock_ops = { .owner = THIS_MODULE, .set = &bpf_kfunc_check_set_sock_ops, }; static int __init bpf_kfunc_init(void) { int ret; ret = register_btf_kfunc_id_set(BPF_PROG_TYPE_SCHED_CLS, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SCHED_ACT, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SK_SKB, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SOCKET_FILTER, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_CGROUP_SKB, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_LWT_OUT, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_LWT_IN, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_LWT_XMIT, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_LWT_SEG6LOCAL, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_NETFILTER, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_TRACING, &bpf_kfunc_set_skb); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_XDP, &bpf_kfunc_set_xdp); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_CGROUP_SOCK_ADDR, &bpf_kfunc_set_sock_addr); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SCHED_CLS, &bpf_kfunc_set_tcp_reqsk); return ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SOCK_OPS, &bpf_kfunc_set_sock_ops); } late_initcall(bpf_kfunc_init); __bpf_kfunc_start_defs(); /* bpf_sock_destroy: Destroy the given socket with ECONNABORTED error code. * * The function expects a non-NULL pointer to a socket, and invokes the * protocol specific socket destroy handlers. * * The helper can only be called from BPF contexts that have acquired the socket * locks. * * Parameters: * @sock: Pointer to socket to be destroyed * * Return: * On error, may return EPROTONOSUPPORT, EINVAL. * EPROTONOSUPPORT if protocol specific destroy handler is not supported. * 0 otherwise */ __bpf_kfunc int bpf_sock_destroy(struct sock_common *sock) { struct sock *sk = (struct sock *)sock; /* The locking semantics that allow for synchronous execution of the * destroy handlers are only supported for TCP and UDP. * Supporting protocols will need to acquire sock lock in the BPF context * prior to invoking this kfunc. */ if (!sk->sk_prot->diag_destroy || (sk->sk_protocol != IPPROTO_TCP && sk->sk_protocol != IPPROTO_UDP)) return -EOPNOTSUPP; return sk->sk_prot->diag_destroy(sk, ECONNABORTED); } __bpf_kfunc_end_defs(); BTF_KFUNCS_START(bpf_sk_iter_kfunc_ids) BTF_ID_FLAGS(func, bpf_sock_destroy, KF_TRUSTED_ARGS) BTF_KFUNCS_END(bpf_sk_iter_kfunc_ids) static int tracing_iter_filter(const struct bpf_prog *prog, u32 kfunc_id) { if (btf_id_set8_contains(&bpf_sk_iter_kfunc_ids, kfunc_id) && prog->expected_attach_type != BPF_TRACE_ITER) return -EACCES; return 0; } static const struct btf_kfunc_id_set bpf_sk_iter_kfunc_set = { .owner = THIS_MODULE, .set = &bpf_sk_iter_kfunc_ids, .filter = tracing_iter_filter, }; static int init_subsystem(void) { return register_btf_kfunc_id_set(BPF_PROG_TYPE_TRACING, &bpf_sk_iter_kfunc_set); } late_initcall(init_subsystem); |
| 127 127 127 29 127 28 127 127 127 127 127 127 127 127 127 29 29 | 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 | // SPDX-License-Identifier: GPL-2.0 /* * driver.c - centralized device driver management * * Copyright (c) 2002-3 Patrick Mochel * Copyright (c) 2002-3 Open Source Development Labs * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de> * Copyright (c) 2007 Novell Inc. */ #include <linux/device/driver.h> #include <linux/device.h> #include <linux/module.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/sysfs.h> #include "base.h" static struct device *next_device(struct klist_iter *i) { struct klist_node *n = klist_next(i); struct device *dev = NULL; struct device_private *dev_prv; if (n) { dev_prv = to_device_private_driver(n); dev = dev_prv->device; } return dev; } /** * driver_set_override() - Helper to set or clear driver override. * @dev: Device to change * @override: Address of string to change (e.g. &device->driver_override); * The contents will be freed and hold newly allocated override. * @s: NUL-terminated string, new driver name to force a match, pass empty * string to clear it ("" or "\n", where the latter is only for sysfs * interface). * @len: length of @s * * Helper to set or clear driver override in a device, intended for the cases * when the driver_override field is allocated by driver/bus code. * * Returns: 0 on success or a negative error code on failure. */ int driver_set_override(struct device *dev, const char **override, const char *s, size_t len) { const char *new, *old; char *cp; if (!override || !s) return -EINVAL; /* * The stored value will be used in sysfs show callback (sysfs_emit()), * which has a length limit of PAGE_SIZE and adds a trailing newline. * Thus we can store one character less to avoid truncation during sysfs * show. */ if (len >= (PAGE_SIZE - 1)) return -EINVAL; /* * Compute the real length of the string in case userspace sends us a * bunch of \0 characters like python likes to do. */ len = strlen(s); if (!len) { /* Empty string passed - clear override */ device_lock(dev); old = *override; *override = NULL; device_unlock(dev); kfree(old); return 0; } cp = strnchr(s, len, '\n'); if (cp) len = cp - s; new = kstrndup(s, len, GFP_KERNEL); if (!new) return -ENOMEM; device_lock(dev); old = *override; if (cp != s) { *override = new; } else { /* "\n" passed - clear override */ kfree(new); *override = NULL; } device_unlock(dev); kfree(old); return 0; } EXPORT_SYMBOL_GPL(driver_set_override); /** * driver_for_each_device - Iterator for devices bound to a driver. * @drv: Driver we're iterating. * @start: Device to begin with * @data: Data to pass to the callback. * @fn: Function to call for each device. * * Iterate over the @drv's list of devices calling @fn for each one. */ int driver_for_each_device(struct device_driver *drv, struct device *start, void *data, device_iter_t fn) { struct klist_iter i; struct device *dev; int error = 0; if (!drv) return -EINVAL; klist_iter_init_node(&drv->p->klist_devices, &i, start ? &start->p->knode_driver : NULL); while (!error && (dev = next_device(&i))) error = fn(dev, data); klist_iter_exit(&i); return error; } EXPORT_SYMBOL_GPL(driver_for_each_device); /** * driver_find_device - device iterator for locating a particular device. * @drv: The device's driver * @start: Device to begin with * @data: Data to pass to match function * @match: Callback function to check device * * This is similar to the driver_for_each_device() function above, but * it returns a reference to a device that is 'found' for later use, as * determined by the @match callback. * * The callback should return 0 if the device doesn't match and non-zero * if it does. If the callback returns non-zero, this function will * return to the caller and not iterate over any more devices. */ struct device *driver_find_device(const struct device_driver *drv, struct device *start, const void *data, device_match_t match) { struct klist_iter i; struct device *dev; if (!drv || !drv->p) return NULL; klist_iter_init_node(&drv->p->klist_devices, &i, (start ? &start->p->knode_driver : NULL)); while ((dev = next_device(&i))) { if (match(dev, data)) { get_device(dev); break; } } klist_iter_exit(&i); return dev; } EXPORT_SYMBOL_GPL(driver_find_device); /** * driver_create_file - create sysfs file for driver. * @drv: driver. * @attr: driver attribute descriptor. */ int driver_create_file(const struct device_driver *drv, const struct driver_attribute *attr) { int error; if (drv) error = sysfs_create_file(&drv->p->kobj, &attr->attr); else error = -EINVAL; return error; } EXPORT_SYMBOL_GPL(driver_create_file); /** * driver_remove_file - remove sysfs file for driver. * @drv: driver. * @attr: driver attribute descriptor. */ void driver_remove_file(const struct device_driver *drv, const struct driver_attribute *attr) { if (drv) sysfs_remove_file(&drv->p->kobj, &attr->attr); } EXPORT_SYMBOL_GPL(driver_remove_file); int driver_add_groups(const struct device_driver *drv, const struct attribute_group **groups) { return sysfs_create_groups(&drv->p->kobj, groups); } void driver_remove_groups(const struct device_driver *drv, const struct attribute_group **groups) { sysfs_remove_groups(&drv->p->kobj, groups); } /** * driver_register - register driver with bus * @drv: driver to register * * We pass off most of the work to the bus_add_driver() call, * since most of the things we have to do deal with the bus * structures. */ int driver_register(struct device_driver *drv) { int ret; struct device_driver *other; if (!bus_is_registered(drv->bus)) { pr_err("Driver '%s' was unable to register with bus_type '%s' because the bus was not initialized.\n", drv->name, drv->bus->name); return -EINVAL; } if ((drv->bus->probe && drv->probe) || (drv->bus->remove && drv->remove) || (drv->bus->shutdown && drv->shutdown)) pr_warn("Driver '%s' needs updating - please use " "bus_type methods\n", drv->name); other = driver_find(drv->name, drv->bus); if (other) { pr_err("Error: Driver '%s' is already registered, " "aborting...\n", drv->name); return -EBUSY; } ret = bus_add_driver(drv); if (ret) return ret; ret = driver_add_groups(drv, drv->groups); if (ret) { bus_remove_driver(drv); return ret; } kobject_uevent(&drv->p->kobj, KOBJ_ADD); deferred_probe_extend_timeout(); return ret; } EXPORT_SYMBOL_GPL(driver_register); /** * driver_unregister - remove driver from system. * @drv: driver. * * Again, we pass off most of the work to the bus-level call. */ void driver_unregister(struct device_driver *drv) { if (!drv || !drv->p) { WARN(1, "Unexpected driver unregister!\n"); return; } driver_remove_groups(drv, drv->groups); bus_remove_driver(drv); } EXPORT_SYMBOL_GPL(driver_unregister); |
| 2 1 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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * USB CDC EEM network interface driver * Copyright (C) 2009 Oberthur Technologies * by Omar Laazimani, Olivier Condemine */ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ctype.h> #include <linux/ethtool.h> #include <linux/workqueue.h> #include <linux/mii.h> #include <linux/usb.h> #include <linux/crc32.h> #include <linux/usb/cdc.h> #include <linux/usb/usbnet.h> #include <linux/gfp.h> #include <linux/if_vlan.h> /* * This driver is an implementation of the CDC "Ethernet Emulation * Model" (EEM) specification, which encapsulates Ethernet frames * for transport over USB using a simpler USB device model than the * previous CDC "Ethernet Control Model" (ECM, or "CDC Ethernet"). * * For details, see https://usb.org/sites/default/files/CDC_EEM10.pdf * * This version has been tested with GIGAntIC WuaoW SIM Smart Card on 2.6.24, * 2.6.27 and 2.6.30rc2 kernel. * It has also been validated on Openmoko Om 2008.12 (based on 2.6.24 kernel). * build on 23-April-2009 */ #define EEM_HEAD 2 /* 2 byte header */ /*-------------------------------------------------------------------------*/ static void eem_linkcmd_complete(struct urb *urb) { dev_kfree_skb(urb->context); usb_free_urb(urb); } static void eem_linkcmd(struct usbnet *dev, struct sk_buff *skb) { struct urb *urb; int status; urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) goto fail; usb_fill_bulk_urb(urb, dev->udev, dev->out, skb->data, skb->len, eem_linkcmd_complete, skb); status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { usb_free_urb(urb); fail: dev_kfree_skb(skb); netdev_warn(dev->net, "link cmd failure\n"); return; } } static int eem_bind(struct usbnet *dev, struct usb_interface *intf) { int status = 0; status = usbnet_get_endpoints(dev, intf); if (status < 0) return status; /* no jumbogram (16K) support for now */ dev->net->hard_header_len += EEM_HEAD + ETH_FCS_LEN + VLAN_HLEN; dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; return 0; } /* * EEM permits packing multiple Ethernet frames into USB transfers * (a "bundle"), but for TX we don't try to do that. */ static struct sk_buff *eem_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { struct sk_buff *skb2 = NULL; u16 len = skb->len; u32 crc = 0; int padlen = 0; /* When ((len + EEM_HEAD + ETH_FCS_LEN) % dev->maxpacket) is * zero, stick two bytes of zero length EEM packet on the end. * Else the framework would add invalid single byte padding, * since it can't know whether ZLPs will be handled right by * all the relevant hardware and software. */ if (!((len + EEM_HEAD + ETH_FCS_LEN) % dev->maxpacket)) padlen += 2; if (!skb_cloned(skb)) { int headroom = skb_headroom(skb); int tailroom = skb_tailroom(skb); if ((tailroom >= ETH_FCS_LEN + padlen) && (headroom >= EEM_HEAD)) goto done; if ((headroom + tailroom) > (EEM_HEAD + ETH_FCS_LEN + padlen)) { skb->data = memmove(skb->head + EEM_HEAD, skb->data, skb->len); skb_set_tail_pointer(skb, len); goto done; } } skb2 = skb_copy_expand(skb, EEM_HEAD, ETH_FCS_LEN + padlen, flags); dev_kfree_skb_any(skb); if (!skb2) return NULL; skb = skb2; done: /* we don't use the "no Ethernet CRC" option */ crc = crc32_le(~0, skb->data, skb->len); crc = ~crc; put_unaligned_le32(crc, skb_put(skb, 4)); /* EEM packet header format: * b0..13: length of ethernet frame * b14: bmCRC (1 == valid Ethernet CRC) * b15: bmType (0 == data) */ len = skb->len; put_unaligned_le16(BIT(14) | len, skb_push(skb, 2)); /* Bundle a zero length EEM packet if needed */ if (padlen) put_unaligned_le16(0, skb_put(skb, 2)); return skb; } static int eem_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { /* * Our task here is to strip off framing, leaving skb with one * data frame for the usbnet framework code to process. But we * may have received multiple EEM payloads, or command payloads. * So we must process _everything_ as if it's a header, except * maybe the last data payload * * REVISIT the framework needs updating so that when we consume * all payloads (the last or only message was a command, or a * zero length EEM packet) that is not accounted as an rx_error. */ do { struct sk_buff *skb2 = NULL; u16 header; u16 len = 0; /* incomplete EEM header? */ if (skb->len < EEM_HEAD) return 0; /* * EEM packet header format: * b0..14: EEM type dependent (Data or Command) * b15: bmType */ header = get_unaligned_le16(skb->data); skb_pull(skb, EEM_HEAD); /* * The bmType bit helps to denote when EEM * packet is data or command : * bmType = 0 : EEM data payload * bmType = 1 : EEM (link) command */ if (header & BIT(15)) { u16 bmEEMCmd; /* * EEM (link) command packet: * b0..10: bmEEMCmdParam * b11..13: bmEEMCmd * b14: bmReserved (must be 0) * b15: 1 (EEM command) */ if (header & BIT(14)) { netdev_dbg(dev->net, "reserved command %04x\n", header); continue; } bmEEMCmd = (header >> 11) & 0x7; switch (bmEEMCmd) { /* Responding to echo requests is mandatory. */ case 0: /* Echo command */ len = header & 0x7FF; /* bogus command? */ if (skb->len < len) return 0; skb2 = skb_clone(skb, GFP_ATOMIC); if (unlikely(!skb2)) goto next; skb_trim(skb2, len); put_unaligned_le16(BIT(15) | BIT(11) | len, skb_push(skb2, 2)); eem_linkcmd(dev, skb2); break; /* * Host may choose to ignore hints. * - suspend: peripheral ready to suspend * - response: suggest N millisec polling * - response complete: suggest N sec polling * * Suspend is reported and maybe heeded. */ case 2: /* Suspend hint */ usbnet_device_suggests_idle(dev); continue; case 3: /* Response hint */ case 4: /* Response complete hint */ continue; /* * Hosts should never receive host-to-peripheral * or reserved command codes; or responses to an * echo command we didn't send. */ case 1: /* Echo response */ case 5: /* Tickle */ default: /* reserved */ netdev_warn(dev->net, "unexpected link command %d\n", bmEEMCmd); continue; } } else { u32 crc, crc2; int is_last; /* zero length EEM packet? */ if (header == 0) continue; /* * EEM data packet header : * b0..13: length of ethernet frame * b14: bmCRC * b15: 0 (EEM data) */ len = header & 0x3FFF; /* bogus EEM payload? */ if (skb->len < len) return 0; /* bogus ethernet frame? */ if (len < (ETH_HLEN + ETH_FCS_LEN)) goto next; /* * Treat the last payload differently: framework * code expects our "fixup" to have stripped off * headers, so "skb" is a data packet (or error). * Else if it's not the last payload, keep "skb" * for further processing. */ is_last = (len == skb->len); if (is_last) skb2 = skb; else { skb2 = skb_clone(skb, GFP_ATOMIC); if (unlikely(!skb2)) return 0; } /* * The bmCRC helps to denote when the CRC field in * the Ethernet frame contains a calculated CRC: * bmCRC = 1 : CRC is calculated * bmCRC = 0 : CRC = 0xDEADBEEF */ if (header & BIT(14)) { crc = get_unaligned_le32(skb2->data + len - ETH_FCS_LEN); crc2 = ~crc32_le(~0, skb2->data, skb2->len - ETH_FCS_LEN); } else { crc = get_unaligned_be32(skb2->data + len - ETH_FCS_LEN); crc2 = 0xdeadbeef; } skb_trim(skb2, len - ETH_FCS_LEN); if (is_last) return crc == crc2; if (unlikely(crc != crc2)) { dev->net->stats.rx_errors++; dev_kfree_skb_any(skb2); } else usbnet_skb_return(dev, skb2); } next: skb_pull(skb, len); } while (skb->len); return 1; } static const struct driver_info eem_info = { .description = "CDC EEM Device", .flags = FLAG_ETHER | FLAG_POINTTOPOINT, .bind = eem_bind, .rx_fixup = eem_rx_fixup, .tx_fixup = eem_tx_fixup, }; /*-------------------------------------------------------------------------*/ static const struct usb_device_id products[] = { { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_EEM, USB_CDC_PROTO_EEM), .driver_info = (unsigned long) &eem_info, }, { /* EMPTY == end of list */ }, }; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver eem_driver = { .name = "cdc_eem", .id_table = products, .probe = usbnet_probe, .disconnect = usbnet_disconnect, .suspend = usbnet_suspend, .resume = usbnet_resume, .disable_hub_initiated_lpm = 1, }; module_usb_driver(eem_driver); MODULE_AUTHOR("Omar Laazimani <omar.oberthur@gmail.com>"); MODULE_DESCRIPTION("USB CDC EEM"); MODULE_LICENSE("GPL"); |
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1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 | // SPDX-License-Identifier: GPL-2.0-or-later /* * cpia CPiA (1) gspca driver * * Copyright (C) 2010-2011 Hans de Goede <hdegoede@redhat.com> * * This module is adapted from the in kernel v4l1 cpia driver which is : * * (C) Copyright 1999-2000 Peter Pregler * (C) Copyright 1999-2000 Scott J. Bertin * (C) Copyright 1999-2000 Johannes Erdfelt <johannes@erdfelt.com> * (C) Copyright 2000 STMicroelectronics */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "cpia1" #include <linux/input.h> #include <linux/sched/signal.h> #include <linux/bitops.h> #include "gspca.h" MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); MODULE_DESCRIPTION("Vision CPiA"); MODULE_LICENSE("GPL"); /* constant value's */ #define MAGIC_0 0x19 #define MAGIC_1 0x68 #define DATA_IN 0xc0 #define DATA_OUT 0x40 #define VIDEOSIZE_QCIF 0 /* 176x144 */ #define VIDEOSIZE_CIF 1 /* 352x288 */ #define SUBSAMPLE_420 0 #define SUBSAMPLE_422 1 #define YUVORDER_YUYV 0 #define YUVORDER_UYVY 1 #define NOT_COMPRESSED 0 #define COMPRESSED 1 #define NO_DECIMATION 0 #define DECIMATION_ENAB 1 #define EOI 0xff /* End Of Image */ #define EOL 0xfd /* End Of Line */ #define FRAME_HEADER_SIZE 64 /* Image grab modes */ #define CPIA_GRAB_SINGLE 0 #define CPIA_GRAB_CONTINEOUS 1 /* Compression parameters */ #define CPIA_COMPRESSION_NONE 0 #define CPIA_COMPRESSION_AUTO 1 #define CPIA_COMPRESSION_MANUAL 2 #define CPIA_COMPRESSION_TARGET_QUALITY 0 #define CPIA_COMPRESSION_TARGET_FRAMERATE 1 /* Return offsets for GetCameraState */ #define SYSTEMSTATE 0 #define GRABSTATE 1 #define STREAMSTATE 2 #define FATALERROR 3 #define CMDERROR 4 #define DEBUGFLAGS 5 #define VPSTATUS 6 #define ERRORCODE 7 /* SystemState */ #define UNINITIALISED_STATE 0 #define PASS_THROUGH_STATE 1 #define LO_POWER_STATE 2 #define HI_POWER_STATE 3 #define WARM_BOOT_STATE 4 /* GrabState */ #define GRAB_IDLE 0 #define GRAB_ACTIVE 1 #define GRAB_DONE 2 /* StreamState */ #define STREAM_NOT_READY 0 #define STREAM_READY 1 #define STREAM_OPEN 2 #define STREAM_PAUSED 3 #define STREAM_FINISHED 4 /* Fatal Error, CmdError, and DebugFlags */ #define CPIA_FLAG 1 #define SYSTEM_FLAG 2 #define INT_CTRL_FLAG 4 #define PROCESS_FLAG 8 #define COM_FLAG 16 #define VP_CTRL_FLAG 32 #define CAPTURE_FLAG 64 #define DEBUG_FLAG 128 /* VPStatus */ #define VP_STATE_OK 0x00 #define VP_STATE_FAILED_VIDEOINIT 0x01 #define VP_STATE_FAILED_AECACBINIT 0x02 #define VP_STATE_AEC_MAX 0x04 #define VP_STATE_ACB_BMAX 0x08 #define VP_STATE_ACB_RMIN 0x10 #define VP_STATE_ACB_GMIN 0x20 #define VP_STATE_ACB_RMAX 0x40 #define VP_STATE_ACB_GMAX 0x80 /* default (minimum) compensation values */ #define COMP_RED 220 #define COMP_GREEN1 214 #define COMP_GREEN2 COMP_GREEN1 #define COMP_BLUE 230 /* exposure status */ #define EXPOSURE_VERY_LIGHT 0 #define EXPOSURE_LIGHT 1 #define EXPOSURE_NORMAL 2 #define EXPOSURE_DARK 3 #define EXPOSURE_VERY_DARK 4 #define CPIA_MODULE_CPIA (0 << 5) #define CPIA_MODULE_SYSTEM (1 << 5) #define CPIA_MODULE_VP_CTRL (5 << 5) #define CPIA_MODULE_CAPTURE (6 << 5) #define CPIA_MODULE_DEBUG (7 << 5) #define INPUT (DATA_IN << 8) #define OUTPUT (DATA_OUT << 8) #define CPIA_COMMAND_GetCPIAVersion (INPUT | CPIA_MODULE_CPIA | 1) #define CPIA_COMMAND_GetPnPID (INPUT | CPIA_MODULE_CPIA | 2) #define CPIA_COMMAND_GetCameraStatus (INPUT | CPIA_MODULE_CPIA | 3) #define CPIA_COMMAND_GotoHiPower (OUTPUT | CPIA_MODULE_CPIA | 4) #define CPIA_COMMAND_GotoLoPower (OUTPUT | CPIA_MODULE_CPIA | 5) #define CPIA_COMMAND_GotoSuspend (OUTPUT | CPIA_MODULE_CPIA | 7) #define CPIA_COMMAND_GotoPassThrough (OUTPUT | CPIA_MODULE_CPIA | 8) #define CPIA_COMMAND_ModifyCameraStatus (OUTPUT | CPIA_MODULE_CPIA | 10) #define CPIA_COMMAND_ReadVCRegs (INPUT | CPIA_MODULE_SYSTEM | 1) #define CPIA_COMMAND_WriteVCReg (OUTPUT | CPIA_MODULE_SYSTEM | 2) #define CPIA_COMMAND_ReadMCPorts (INPUT | CPIA_MODULE_SYSTEM | 3) #define CPIA_COMMAND_WriteMCPort (OUTPUT | CPIA_MODULE_SYSTEM | 4) #define CPIA_COMMAND_SetBaudRate (OUTPUT | CPIA_MODULE_SYSTEM | 5) #define CPIA_COMMAND_SetECPTiming (OUTPUT | CPIA_MODULE_SYSTEM | 6) #define CPIA_COMMAND_ReadIDATA (INPUT | CPIA_MODULE_SYSTEM | 7) #define CPIA_COMMAND_WriteIDATA (OUTPUT | CPIA_MODULE_SYSTEM | 8) #define CPIA_COMMAND_GenericCall (OUTPUT | CPIA_MODULE_SYSTEM | 9) #define CPIA_COMMAND_I2CStart (OUTPUT | CPIA_MODULE_SYSTEM | 10) #define CPIA_COMMAND_I2CStop (OUTPUT | CPIA_MODULE_SYSTEM | 11) #define CPIA_COMMAND_I2CWrite (OUTPUT | CPIA_MODULE_SYSTEM | 12) #define CPIA_COMMAND_I2CRead (INPUT | CPIA_MODULE_SYSTEM | 13) #define CPIA_COMMAND_GetVPVersion (INPUT | CPIA_MODULE_VP_CTRL | 1) #define CPIA_COMMAND_ResetFrameCounter (INPUT | CPIA_MODULE_VP_CTRL | 2) #define CPIA_COMMAND_SetColourParams (OUTPUT | CPIA_MODULE_VP_CTRL | 3) #define CPIA_COMMAND_SetExposure (OUTPUT | CPIA_MODULE_VP_CTRL | 4) #define CPIA_COMMAND_SetColourBalance (OUTPUT | CPIA_MODULE_VP_CTRL | 6) #define CPIA_COMMAND_SetSensorFPS (OUTPUT | CPIA_MODULE_VP_CTRL | 7) #define CPIA_COMMAND_SetVPDefaults (OUTPUT | CPIA_MODULE_VP_CTRL | 8) #define CPIA_COMMAND_SetApcor (OUTPUT | CPIA_MODULE_VP_CTRL | 9) #define CPIA_COMMAND_SetFlickerCtrl (OUTPUT | CPIA_MODULE_VP_CTRL | 10) #define CPIA_COMMAND_SetVLOffset (OUTPUT | CPIA_MODULE_VP_CTRL | 11) #define CPIA_COMMAND_GetColourParams (INPUT | CPIA_MODULE_VP_CTRL | 16) #define CPIA_COMMAND_GetColourBalance (INPUT | CPIA_MODULE_VP_CTRL | 17) #define CPIA_COMMAND_GetExposure (INPUT | CPIA_MODULE_VP_CTRL | 18) #define CPIA_COMMAND_SetSensorMatrix (OUTPUT | CPIA_MODULE_VP_CTRL | 19) #define CPIA_COMMAND_ColourBars (OUTPUT | CPIA_MODULE_VP_CTRL | 25) #define CPIA_COMMAND_ReadVPRegs (INPUT | CPIA_MODULE_VP_CTRL | 30) #define CPIA_COMMAND_WriteVPReg (OUTPUT | CPIA_MODULE_VP_CTRL | 31) #define CPIA_COMMAND_GrabFrame (OUTPUT | CPIA_MODULE_CAPTURE | 1) #define CPIA_COMMAND_UploadFrame (OUTPUT | CPIA_MODULE_CAPTURE | 2) #define CPIA_COMMAND_SetGrabMode (OUTPUT | CPIA_MODULE_CAPTURE | 3) #define CPIA_COMMAND_InitStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 4) #define CPIA_COMMAND_FiniStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 5) #define CPIA_COMMAND_StartStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 6) #define CPIA_COMMAND_EndStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 7) #define CPIA_COMMAND_SetFormat (OUTPUT | CPIA_MODULE_CAPTURE | 8) #define CPIA_COMMAND_SetROI (OUTPUT | CPIA_MODULE_CAPTURE | 9) #define CPIA_COMMAND_SetCompression (OUTPUT | CPIA_MODULE_CAPTURE | 10) #define CPIA_COMMAND_SetCompressionTarget (OUTPUT | CPIA_MODULE_CAPTURE | 11) #define CPIA_COMMAND_SetYUVThresh (OUTPUT | CPIA_MODULE_CAPTURE | 12) #define CPIA_COMMAND_SetCompressionParams (OUTPUT | CPIA_MODULE_CAPTURE | 13) #define CPIA_COMMAND_DiscardFrame (OUTPUT | CPIA_MODULE_CAPTURE | 14) #define CPIA_COMMAND_GrabReset (OUTPUT | CPIA_MODULE_CAPTURE | 15) #define CPIA_COMMAND_OutputRS232 (OUTPUT | CPIA_MODULE_DEBUG | 1) #define CPIA_COMMAND_AbortProcess (OUTPUT | CPIA_MODULE_DEBUG | 4) #define CPIA_COMMAND_SetDramPage (OUTPUT | CPIA_MODULE_DEBUG | 5) #define CPIA_COMMAND_StartDramUpload (OUTPUT | CPIA_MODULE_DEBUG | 6) #define CPIA_COMMAND_StartDummyDtream (OUTPUT | CPIA_MODULE_DEBUG | 8) #define CPIA_COMMAND_AbortStream (OUTPUT | CPIA_MODULE_DEBUG | 9) #define CPIA_COMMAND_DownloadDRAM (OUTPUT | CPIA_MODULE_DEBUG | 10) #define CPIA_COMMAND_Null (OUTPUT | CPIA_MODULE_DEBUG | 11) #define ROUND_UP_EXP_FOR_FLICKER 15 /* Constants for automatic frame rate adjustment */ #define MAX_EXP 302 #define MAX_EXP_102 255 #define LOW_EXP 140 #define VERY_LOW_EXP 70 #define TC 94 #define EXP_ACC_DARK 50 #define EXP_ACC_LIGHT 90 #define HIGH_COMP_102 160 #define MAX_COMP 239 #define DARK_TIME 3 #define LIGHT_TIME 3 #define FIRMWARE_VERSION(x, y) (sd->params.version.firmwareVersion == (x) && \ sd->params.version.firmwareRevision == (y)) #define CPIA1_CID_COMP_TARGET (V4L2_CTRL_CLASS_USER + 0x1000) #define BRIGHTNESS_DEF 50 #define CONTRAST_DEF 48 #define SATURATION_DEF 50 #define FREQ_DEF V4L2_CID_POWER_LINE_FREQUENCY_50HZ #define ILLUMINATORS_1_DEF 0 #define ILLUMINATORS_2_DEF 0 #define COMP_TARGET_DEF CPIA_COMPRESSION_TARGET_QUALITY /* Developer's Guide Table 5 p 3-34 * indexed by [mains][sensorFps.baserate][sensorFps.divisor]*/ static u8 flicker_jumps[2][2][4] = { { { 76, 38, 19, 9 }, { 92, 46, 23, 11 } }, { { 64, 32, 16, 8 }, { 76, 38, 19, 9} } }; struct cam_params { struct { u8 firmwareVersion; u8 firmwareRevision; u8 vcVersion; u8 vcRevision; } version; struct { u16 vendor; u16 product; u16 deviceRevision; } pnpID; struct { u8 vpVersion; u8 vpRevision; u16 cameraHeadID; } vpVersion; struct { u8 systemState; u8 grabState; u8 streamState; u8 fatalError; u8 cmdError; u8 debugFlags; u8 vpStatus; u8 errorCode; } status; struct { u8 brightness; u8 contrast; u8 saturation; } colourParams; struct { u8 gainMode; u8 expMode; u8 compMode; u8 centreWeight; u8 gain; u8 fineExp; u8 coarseExpLo; u8 coarseExpHi; u8 redComp; u8 green1Comp; u8 green2Comp; u8 blueComp; } exposure; struct { u8 balanceMode; u8 redGain; u8 greenGain; u8 blueGain; } colourBalance; struct { u8 divisor; u8 baserate; } sensorFps; struct { u8 gain1; u8 gain2; u8 gain4; u8 gain8; } apcor; struct { u8 disabled; u8 flickerMode; u8 coarseJump; u8 allowableOverExposure; } flickerControl; struct { u8 gain1; u8 gain2; u8 gain4; u8 gain8; } vlOffset; struct { u8 mode; u8 decimation; } compression; struct { u8 frTargeting; u8 targetFR; u8 targetQ; } compressionTarget; struct { u8 yThreshold; u8 uvThreshold; } yuvThreshold; struct { u8 hysteresis; u8 threshMax; u8 smallStep; u8 largeStep; u8 decimationHysteresis; u8 frDiffStepThresh; u8 qDiffStepThresh; u8 decimationThreshMod; } compressionParams; struct { u8 videoSize; /* CIF/QCIF */ u8 subSample; u8 yuvOrder; } format; struct { /* Intel QX3 specific data */ u8 qx3_detected; /* a QX3 is present */ u8 toplight; /* top light lit , R/W */ u8 bottomlight; /* bottom light lit, R/W */ u8 button; /* snapshot button pressed (R/O) */ u8 cradled; /* microscope is in cradle (R/O) */ } qx3; struct { u8 colStart; /* skip first 8*colStart pixels */ u8 colEnd; /* finish at 8*colEnd pixels */ u8 rowStart; /* skip first 4*rowStart lines */ u8 rowEnd; /* finish at 4*rowEnd lines */ } roi; u8 ecpTiming; u8 streamStartLine; }; /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ struct cam_params params; /* camera settings */ atomic_t cam_exposure; atomic_t fps; int exposure_count; u8 exposure_status; struct v4l2_ctrl *freq; u8 mainsFreq; /* 0 = 50hz, 1 = 60hz */ u8 first_frame; }; static const struct v4l2_pix_format mode[] = { {160, 120, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE, /* The sizeimage is trial and error, as with low framerates * the camera will pad out usb frames, making the image * data larger than strictly necessary */ .bytesperline = 160, .sizeimage = 65536, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 3}, {176, 144, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE, .bytesperline = 172, .sizeimage = 65536, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {320, 240, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 262144, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {352, 288, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 262144, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; /********************************************************************** * * General functions * **********************************************************************/ static int cpia_usb_transferCmd(struct gspca_dev *gspca_dev, u8 *command) { u8 requesttype; unsigned int pipe; int ret, databytes = command[6] | (command[7] << 8); /* Sometimes we see spurious EPIPE errors */ int retries = 3; if (command[0] == DATA_IN) { pipe = usb_rcvctrlpipe(gspca_dev->dev, 0); requesttype = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE; } else if (command[0] == DATA_OUT) { pipe = usb_sndctrlpipe(gspca_dev->dev, 0); requesttype = USB_TYPE_VENDOR | USB_RECIP_DEVICE; } else { gspca_err(gspca_dev, "Unexpected first byte of command: %x\n", command[0]); return -EINVAL; } retry: ret = usb_control_msg(gspca_dev->dev, pipe, command[1], requesttype, command[2] | (command[3] << 8), command[4] | (command[5] << 8), gspca_dev->usb_buf, databytes, 1000); if (ret < 0) pr_err("usb_control_msg %02x, error %d\n", command[1], ret); if (ret == -EPIPE && retries > 0) { retries--; goto retry; } return (ret < 0) ? ret : 0; } /* send an arbitrary command to the camera */ static int do_command(struct gspca_dev *gspca_dev, u16 command, u8 a, u8 b, u8 c, u8 d) { struct sd *sd = (struct sd *) gspca_dev; int ret, datasize; u8 cmd[8]; switch (command) { case CPIA_COMMAND_GetCPIAVersion: case CPIA_COMMAND_GetPnPID: case CPIA_COMMAND_GetCameraStatus: case CPIA_COMMAND_GetVPVersion: case CPIA_COMMAND_GetColourParams: case CPIA_COMMAND_GetColourBalance: case CPIA_COMMAND_GetExposure: datasize = 8; break; case CPIA_COMMAND_ReadMCPorts: case CPIA_COMMAND_ReadVCRegs: datasize = 4; break; default: datasize = 0; break; } cmd[0] = command >> 8; cmd[1] = command & 0xff; cmd[2] = a; cmd[3] = b; cmd[4] = c; cmd[5] = d; cmd[6] = datasize; cmd[7] = 0; ret = cpia_usb_transferCmd(gspca_dev, cmd); if (ret) return ret; switch (command) { case CPIA_COMMAND_GetCPIAVersion: sd->params.version.firmwareVersion = gspca_dev->usb_buf[0]; sd->params.version.firmwareRevision = gspca_dev->usb_buf[1]; sd->params.version.vcVersion = gspca_dev->usb_buf[2]; sd->params.version.vcRevision = gspca_dev->usb_buf[3]; break; case CPIA_COMMAND_GetPnPID: sd->params.pnpID.vendor = gspca_dev->usb_buf[0] | (gspca_dev->usb_buf[1] << 8); sd->params.pnpID.product = gspca_dev->usb_buf[2] | (gspca_dev->usb_buf[3] << 8); sd->params.pnpID.deviceRevision = gspca_dev->usb_buf[4] | (gspca_dev->usb_buf[5] << 8); break; case CPIA_COMMAND_GetCameraStatus: sd->params.status.systemState = gspca_dev->usb_buf[0]; sd->params.status.grabState = gspca_dev->usb_buf[1]; sd->params.status.streamState = gspca_dev->usb_buf[2]; sd->params.status.fatalError = gspca_dev->usb_buf[3]; sd->params.status.cmdError = gspca_dev->usb_buf[4]; sd->params.status.debugFlags = gspca_dev->usb_buf[5]; sd->params.status.vpStatus = gspca_dev->usb_buf[6]; sd->params.status.errorCode = gspca_dev->usb_buf[7]; break; case CPIA_COMMAND_GetVPVersion: sd->params.vpVersion.vpVersion = gspca_dev->usb_buf[0]; sd->params.vpVersion.vpRevision = gspca_dev->usb_buf[1]; sd->params.vpVersion.cameraHeadID = gspca_dev->usb_buf[2] | (gspca_dev->usb_buf[3] << 8); break; case CPIA_COMMAND_GetColourParams: sd->params.colourParams.brightness = gspca_dev->usb_buf[0]; sd->params.colourParams.contrast = gspca_dev->usb_buf[1]; sd->params.colourParams.saturation = gspca_dev->usb_buf[2]; break; case CPIA_COMMAND_GetColourBalance: sd->params.colourBalance.redGain = gspca_dev->usb_buf[0]; sd->params.colourBalance.greenGain = gspca_dev->usb_buf[1]; sd->params.colourBalance.blueGain = gspca_dev->usb_buf[2]; break; case CPIA_COMMAND_GetExposure: sd->params.exposure.gain = gspca_dev->usb_buf[0]; sd->params.exposure.fineExp = gspca_dev->usb_buf[1]; sd->params.exposure.coarseExpLo = gspca_dev->usb_buf[2]; sd->params.exposure.coarseExpHi = gspca_dev->usb_buf[3]; sd->params.exposure.redComp = gspca_dev->usb_buf[4]; sd->params.exposure.green1Comp = gspca_dev->usb_buf[5]; sd->params.exposure.green2Comp = gspca_dev->usb_buf[6]; sd->params.exposure.blueComp = gspca_dev->usb_buf[7]; break; case CPIA_COMMAND_ReadMCPorts: /* test button press */ a = ((gspca_dev->usb_buf[1] & 0x02) == 0); if (a != sd->params.qx3.button) { #if IS_ENABLED(CONFIG_INPUT) input_report_key(gspca_dev->input_dev, KEY_CAMERA, a); input_sync(gspca_dev->input_dev); #endif sd->params.qx3.button = a; } if (sd->params.qx3.button) { /* button pressed - unlock the latch */ ret = do_command(gspca_dev, CPIA_COMMAND_WriteMCPort, 3, 0xdf, 0xdf, 0); if (ret) return ret; ret = do_command(gspca_dev, CPIA_COMMAND_WriteMCPort, 3, 0xff, 0xff, 0); if (ret) return ret; } /* test whether microscope is cradled */ sd->params.qx3.cradled = ((gspca_dev->usb_buf[2] & 0x40) == 0); break; } return 0; } /* send a command to the camera with an additional data transaction */ static int do_command_extended(struct gspca_dev *gspca_dev, u16 command, u8 a, u8 b, u8 c, u8 d, u8 e, u8 f, u8 g, u8 h, u8 i, u8 j, u8 k, u8 l) { u8 cmd[8]; cmd[0] = command >> 8; cmd[1] = command & 0xff; cmd[2] = a; cmd[3] = b; cmd[4] = c; cmd[5] = d; cmd[6] = 8; cmd[7] = 0; gspca_dev->usb_buf[0] = e; gspca_dev->usb_buf[1] = f; gspca_dev->usb_buf[2] = g; gspca_dev->usb_buf[3] = h; gspca_dev->usb_buf[4] = i; gspca_dev->usb_buf[5] = j; gspca_dev->usb_buf[6] = k; gspca_dev->usb_buf[7] = l; return cpia_usb_transferCmd(gspca_dev, cmd); } /* find_over_exposure * Finds a suitable value of OverExposure for use with SetFlickerCtrl * Some calculation is required because this value changes with the brightness * set with SetColourParameters * * Parameters: Brightness - last brightness value set with SetColourParameters * * Returns: OverExposure value to use with SetFlickerCtrl */ #define FLICKER_MAX_EXPOSURE 250 #define FLICKER_ALLOWABLE_OVER_EXPOSURE 146 #define FLICKER_BRIGHTNESS_CONSTANT 59 static int find_over_exposure(int brightness) { int MaxAllowableOverExposure, OverExposure; MaxAllowableOverExposure = FLICKER_MAX_EXPOSURE - brightness - FLICKER_BRIGHTNESS_CONSTANT; OverExposure = min(MaxAllowableOverExposure, FLICKER_ALLOWABLE_OVER_EXPOSURE); return OverExposure; } #undef FLICKER_MAX_EXPOSURE #undef FLICKER_ALLOWABLE_OVER_EXPOSURE #undef FLICKER_BRIGHTNESS_CONSTANT /* initialise cam_data structure */ static void reset_camera_params(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; struct cam_params *params = &sd->params; /* The following parameter values are the defaults from * "Software Developer's Guide for CPiA Cameras". Any changes * to the defaults are noted in comments. */ params->colourParams.brightness = BRIGHTNESS_DEF; params->colourParams.contrast = CONTRAST_DEF; params->colourParams.saturation = SATURATION_DEF; params->exposure.gainMode = 4; params->exposure.expMode = 2; /* AEC */ params->exposure.compMode = 1; params->exposure.centreWeight = 1; params->exposure.gain = 0; params->exposure.fineExp = 0; params->exposure.coarseExpLo = 185; params->exposure.coarseExpHi = 0; params->exposure.redComp = COMP_RED; params->exposure.green1Comp = COMP_GREEN1; params->exposure.green2Comp = COMP_GREEN2; params->exposure.blueComp = COMP_BLUE; params->colourBalance.balanceMode = 2; /* ACB */ params->colourBalance.redGain = 32; params->colourBalance.greenGain = 6; params->colourBalance.blueGain = 92; params->apcor.gain1 = 0x18; params->apcor.gain2 = 0x16; params->apcor.gain4 = 0x24; params->apcor.gain8 = 0x34; params->vlOffset.gain1 = 20; params->vlOffset.gain2 = 24; params->vlOffset.gain4 = 26; params->vlOffset.gain8 = 26; params->compressionParams.hysteresis = 3; params->compressionParams.threshMax = 11; params->compressionParams.smallStep = 1; params->compressionParams.largeStep = 3; params->compressionParams.decimationHysteresis = 2; params->compressionParams.frDiffStepThresh = 5; params->compressionParams.qDiffStepThresh = 3; params->compressionParams.decimationThreshMod = 2; /* End of default values from Software Developer's Guide */ /* Set Sensor FPS to 15fps. This seems better than 30fps * for indoor lighting. */ params->sensorFps.divisor = 1; params->sensorFps.baserate = 1; params->flickerControl.flickerMode = 0; params->flickerControl.disabled = 1; params->flickerControl.coarseJump = flicker_jumps[sd->mainsFreq] [params->sensorFps.baserate] [params->sensorFps.divisor]; params->flickerControl.allowableOverExposure = find_over_exposure(params->colourParams.brightness); params->yuvThreshold.yThreshold = 6; /* From windows driver */ params->yuvThreshold.uvThreshold = 6; /* From windows driver */ params->format.subSample = SUBSAMPLE_420; params->format.yuvOrder = YUVORDER_YUYV; params->compression.mode = CPIA_COMPRESSION_AUTO; params->compression.decimation = NO_DECIMATION; params->compressionTarget.frTargeting = COMP_TARGET_DEF; params->compressionTarget.targetFR = 15; /* From windows driver */ params->compressionTarget.targetQ = 5; /* From windows driver */ params->qx3.qx3_detected = 0; params->qx3.toplight = 0; params->qx3.bottomlight = 0; params->qx3.button = 0; params->qx3.cradled = 0; } static void printstatus(struct gspca_dev *gspca_dev, struct cam_params *params) { gspca_dbg(gspca_dev, D_PROBE, "status: %02x %02x %02x %02x %02x %02x %02x %02x\n", params->status.systemState, params->status.grabState, params->status.streamState, params->status.fatalError, params->status.cmdError, params->status.debugFlags, params->status.vpStatus, params->status.errorCode); } static int goto_low_power(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret; ret = do_command(gspca_dev, CPIA_COMMAND_GotoLoPower, 0, 0, 0, 0); if (ret) return ret; ret = do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0); if (ret) return ret; if (sd->params.status.systemState != LO_POWER_STATE) { if (sd->params.status.systemState != WARM_BOOT_STATE) { gspca_err(gspca_dev, "unexpected state after lo power cmd: %02x\n", sd->params.status.systemState); printstatus(gspca_dev, &sd->params); } return -EIO; } gspca_dbg(gspca_dev, D_CONF, "camera now in LOW power state\n"); return 0; } static int goto_high_power(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret; ret = do_command(gspca_dev, CPIA_COMMAND_GotoHiPower, 0, 0, 0, 0); if (ret) return ret; msleep_interruptible(40); /* windows driver does it too */ if (signal_pending(current)) return -EINTR; ret = do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0); if (ret) return ret; if (sd->params.status.systemState != HI_POWER_STATE) { gspca_err(gspca_dev, "unexpected state after hi power cmd: %02x\n", sd->params.status.systemState); printstatus(gspca_dev, &sd->params); return -EIO; } gspca_dbg(gspca_dev, D_CONF, "camera now in HIGH power state\n"); return 0; } static int get_version_information(struct gspca_dev *gspca_dev) { int ret; /* GetCPIAVersion */ ret = do_command(gspca_dev, CPIA_COMMAND_GetCPIAVersion, 0, 0, 0, 0); if (ret) return ret; /* GetPnPID */ return do_command(gspca_dev, CPIA_COMMAND_GetPnPID, 0, 0, 0, 0); } static int save_camera_state(struct gspca_dev *gspca_dev) { int ret; ret = do_command(gspca_dev, CPIA_COMMAND_GetColourBalance, 0, 0, 0, 0); if (ret) return ret; return do_command(gspca_dev, CPIA_COMMAND_GetExposure, 0, 0, 0, 0); } static int command_setformat(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret; ret = do_command(gspca_dev, CPIA_COMMAND_SetFormat, sd->params.format.videoSize, sd->params.format.subSample, sd->params.format.yuvOrder, 0); if (ret) return ret; return do_command(gspca_dev, CPIA_COMMAND_SetROI, sd->params.roi.colStart, sd->params.roi.colEnd, sd->params.roi.rowStart, sd->params.roi.rowEnd); } static int command_setcolourparams(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetColourParams, sd->params.colourParams.brightness, sd->params.colourParams.contrast, sd->params.colourParams.saturation, 0); } static int command_setapcor(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetApcor, sd->params.apcor.gain1, sd->params.apcor.gain2, sd->params.apcor.gain4, sd->params.apcor.gain8); } static int command_setvloffset(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetVLOffset, sd->params.vlOffset.gain1, sd->params.vlOffset.gain2, sd->params.vlOffset.gain4, sd->params.vlOffset.gain8); } static int command_setexposure(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret; ret = do_command_extended(gspca_dev, CPIA_COMMAND_SetExposure, sd->params.exposure.gainMode, 1, sd->params.exposure.compMode, sd->params.exposure.centreWeight, sd->params.exposure.gain, sd->params.exposure.fineExp, sd->params.exposure.coarseExpLo, sd->params.exposure.coarseExpHi, sd->params.exposure.redComp, sd->params.exposure.green1Comp, sd->params.exposure.green2Comp, sd->params.exposure.blueComp); if (ret) return ret; if (sd->params.exposure.expMode != 1) { ret = do_command_extended(gspca_dev, CPIA_COMMAND_SetExposure, 0, sd->params.exposure.expMode, 0, 0, sd->params.exposure.gain, sd->params.exposure.fineExp, sd->params.exposure.coarseExpLo, sd->params.exposure.coarseExpHi, 0, 0, 0, 0); } return ret; } static int command_setcolourbalance(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (sd->params.colourBalance.balanceMode == 1) { int ret; ret = do_command(gspca_dev, CPIA_COMMAND_SetColourBalance, 1, sd->params.colourBalance.redGain, sd->params.colourBalance.greenGain, sd->params.colourBalance.blueGain); if (ret) return ret; return do_command(gspca_dev, CPIA_COMMAND_SetColourBalance, 3, 0, 0, 0); } if (sd->params.colourBalance.balanceMode == 2) { return do_command(gspca_dev, CPIA_COMMAND_SetColourBalance, 2, 0, 0, 0); } if (sd->params.colourBalance.balanceMode == 3) { return do_command(gspca_dev, CPIA_COMMAND_SetColourBalance, 3, 0, 0, 0); } return -EINVAL; } static int command_setcompressiontarget(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetCompressionTarget, sd->params.compressionTarget.frTargeting, sd->params.compressionTarget.targetFR, sd->params.compressionTarget.targetQ, 0); } static int command_setyuvtresh(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetYUVThresh, sd->params.yuvThreshold.yThreshold, sd->params.yuvThreshold.uvThreshold, 0, 0); } static int command_setcompressionparams(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command_extended(gspca_dev, CPIA_COMMAND_SetCompressionParams, 0, 0, 0, 0, sd->params.compressionParams.hysteresis, sd->params.compressionParams.threshMax, sd->params.compressionParams.smallStep, sd->params.compressionParams.largeStep, sd->params.compressionParams.decimationHysteresis, sd->params.compressionParams.frDiffStepThresh, sd->params.compressionParams.qDiffStepThresh, sd->params.compressionParams.decimationThreshMod); } static int command_setcompression(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetCompression, sd->params.compression.mode, sd->params.compression.decimation, 0, 0); } static int command_setsensorfps(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetSensorFPS, sd->params.sensorFps.divisor, sd->params.sensorFps.baserate, 0, 0); } static int command_setflickerctrl(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetFlickerCtrl, sd->params.flickerControl.flickerMode, sd->params.flickerControl.coarseJump, sd->params.flickerControl.allowableOverExposure, 0); } static int command_setecptiming(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_SetECPTiming, sd->params.ecpTiming, 0, 0, 0); } static int command_pause(struct gspca_dev *gspca_dev) { return do_command(gspca_dev, CPIA_COMMAND_EndStreamCap, 0, 0, 0, 0); } static int command_resume(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; return do_command(gspca_dev, CPIA_COMMAND_InitStreamCap, 0, sd->params.streamStartLine, 0, 0); } static int command_setlights(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret, p1, p2; p1 = (sd->params.qx3.bottomlight == 0) << 1; p2 = (sd->params.qx3.toplight == 0) << 3; ret = do_command(gspca_dev, CPIA_COMMAND_WriteVCReg, 0x90, 0x8f, 0x50, 0); if (ret) return ret; return do_command(gspca_dev, CPIA_COMMAND_WriteMCPort, 2, 0, p1 | p2 | 0xe0, 0); } static int set_flicker(struct gspca_dev *gspca_dev, int on, int apply) { /* Everything in here is from the Windows driver */ /* define for compgain calculation */ #if 0 #define COMPGAIN(base, curexp, newexp) \ (u8) ((((float) base - 128.0) * ((float) curexp / (float) newexp)) + 128.5) #define EXP_FROM_COMP(basecomp, curcomp, curexp) \ (u16)((float)curexp * (float)(u8)(curcomp + 128) / \ (float)(u8)(basecomp - 128)) #else /* equivalent functions without floating point math */ #define COMPGAIN(base, curexp, newexp) \ (u8)(128 + (((u32)(2*(base-128)*curexp + newexp)) / (2 * newexp))) #define EXP_FROM_COMP(basecomp, curcomp, curexp) \ (u16)(((u32)(curexp * (u8)(curcomp + 128)) / (u8)(basecomp - 128))) #endif struct sd *sd = (struct sd *) gspca_dev; int currentexp = sd->params.exposure.coarseExpLo + sd->params.exposure.coarseExpHi * 256; int ret, startexp; if (on) { int cj = sd->params.flickerControl.coarseJump; sd->params.flickerControl.flickerMode = 1; sd->params.flickerControl.disabled = 0; if (sd->params.exposure.expMode != 2) { sd->params.exposure.expMode = 2; sd->exposure_status = EXPOSURE_NORMAL; } if (sd->params.exposure.gain >= BITS_PER_TYPE(currentexp)) return -EINVAL; currentexp = currentexp << sd->params.exposure.gain; sd->params.exposure.gain = 0; /* round down current exposure to nearest value */ startexp = (currentexp + ROUND_UP_EXP_FOR_FLICKER) / cj; if (startexp < 1) startexp = 1; startexp = (startexp * cj) - 1; if (FIRMWARE_VERSION(1, 2)) while (startexp > MAX_EXP_102) startexp -= cj; else while (startexp > MAX_EXP) startexp -= cj; sd->params.exposure.coarseExpLo = startexp & 0xff; sd->params.exposure.coarseExpHi = startexp >> 8; if (currentexp > startexp) { if (currentexp > (2 * startexp)) currentexp = 2 * startexp; sd->params.exposure.redComp = COMPGAIN(COMP_RED, currentexp, startexp); sd->params.exposure.green1Comp = COMPGAIN(COMP_GREEN1, currentexp, startexp); sd->params.exposure.green2Comp = COMPGAIN(COMP_GREEN2, currentexp, startexp); sd->params.exposure.blueComp = COMPGAIN(COMP_BLUE, currentexp, startexp); } else { sd->params.exposure.redComp = COMP_RED; sd->params.exposure.green1Comp = COMP_GREEN1; sd->params.exposure.green2Comp = COMP_GREEN2; sd->params.exposure.blueComp = COMP_BLUE; } if (FIRMWARE_VERSION(1, 2)) sd->params.exposure.compMode = 0; else sd->params.exposure.compMode = 1; sd->params.apcor.gain1 = 0x18; sd->params.apcor.gain2 = 0x18; sd->params.apcor.gain4 = 0x16; sd->params.apcor.gain8 = 0x14; } else { sd->params.flickerControl.flickerMode = 0; sd->params.flickerControl.disabled = 1; /* Average equivalent coarse for each comp channel */ startexp = EXP_FROM_COMP(COMP_RED, sd->params.exposure.redComp, currentexp); startexp += EXP_FROM_COMP(COMP_GREEN1, sd->params.exposure.green1Comp, currentexp); startexp += EXP_FROM_COMP(COMP_GREEN2, sd->params.exposure.green2Comp, currentexp); startexp += EXP_FROM_COMP(COMP_BLUE, sd->params.exposure.blueComp, currentexp); startexp = startexp >> 2; while (startexp > MAX_EXP && sd->params.exposure.gain < sd->params.exposure.gainMode - 1) { startexp = startexp >> 1; ++sd->params.exposure.gain; } if (FIRMWARE_VERSION(1, 2) && startexp > MAX_EXP_102) startexp = MAX_EXP_102; if (startexp > MAX_EXP) startexp = MAX_EXP; sd->params.exposure.coarseExpLo = startexp & 0xff; sd->params.exposure.coarseExpHi = startexp >> 8; sd->params.exposure.redComp = COMP_RED; sd->params.exposure.green1Comp = COMP_GREEN1; sd->params.exposure.green2Comp = COMP_GREEN2; sd->params.exposure.blueComp = COMP_BLUE; sd->params.exposure.compMode = 1; sd->params.apcor.gain1 = 0x18; sd->params.apcor.gain2 = 0x16; sd->params.apcor.gain4 = 0x24; sd->params.apcor.gain8 = 0x34; } sd->params.vlOffset.gain1 = 20; sd->params.vlOffset.gain2 = 24; sd->params.vlOffset.gain4 = 26; sd->params.vlOffset.gain8 = 26; if (apply) { ret = command_setexposure(gspca_dev); if (ret) return ret; ret = command_setapcor(gspca_dev); if (ret) return ret; ret = command_setvloffset(gspca_dev); if (ret) return ret; ret = command_setflickerctrl(gspca_dev); if (ret) return ret; } return 0; #undef EXP_FROM_COMP #undef COMPGAIN } /* monitor the exposure and adjust the sensor frame rate if needed */ static void monitor_exposure(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; u8 exp_acc, bcomp, cmd[8]; int ret, light_exp, dark_exp, very_dark_exp; int old_exposure, new_exposure, framerate; int setfps = 0, setexp = 0, setflicker = 0; /* get necessary stats and register settings from camera */ /* do_command can't handle this, so do it ourselves */ cmd[0] = CPIA_COMMAND_ReadVPRegs >> 8; cmd[1] = CPIA_COMMAND_ReadVPRegs & 0xff; cmd[2] = 30; cmd[3] = 4; cmd[4] = 9; cmd[5] = 8; cmd[6] = 8; cmd[7] = 0; ret = cpia_usb_transferCmd(gspca_dev, cmd); if (ret) { pr_err("ReadVPRegs(30,4,9,8) - failed: %d\n", ret); return; } exp_acc = gspca_dev->usb_buf[0]; bcomp = gspca_dev->usb_buf[1]; light_exp = sd->params.colourParams.brightness + TC - 50 + EXP_ACC_LIGHT; if (light_exp > 255) light_exp = 255; dark_exp = sd->params.colourParams.brightness + TC - 50 - EXP_ACC_DARK; if (dark_exp < 0) dark_exp = 0; very_dark_exp = dark_exp / 2; old_exposure = sd->params.exposure.coarseExpHi * 256 + sd->params.exposure.coarseExpLo; if (!sd->params.flickerControl.disabled) { /* Flicker control on */ int max_comp = FIRMWARE_VERSION(1, 2) ? MAX_COMP : HIGH_COMP_102; bcomp += 128; /* decode */ if (bcomp >= max_comp && exp_acc < dark_exp) { /* dark */ if (exp_acc < very_dark_exp) { /* very dark */ if (sd->exposure_status == EXPOSURE_VERY_DARK) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_VERY_DARK; sd->exposure_count = 1; } } else { /* just dark */ if (sd->exposure_status == EXPOSURE_DARK) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_DARK; sd->exposure_count = 1; } } } else if (old_exposure <= LOW_EXP || exp_acc > light_exp) { /* light */ if (old_exposure <= VERY_LOW_EXP) { /* very light */ if (sd->exposure_status == EXPOSURE_VERY_LIGHT) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_VERY_LIGHT; sd->exposure_count = 1; } } else { /* just light */ if (sd->exposure_status == EXPOSURE_LIGHT) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_LIGHT; sd->exposure_count = 1; } } } else { /* not dark or light */ sd->exposure_status = EXPOSURE_NORMAL; } } else { /* Flicker control off */ if (old_exposure >= MAX_EXP && exp_acc < dark_exp) { /* dark */ if (exp_acc < very_dark_exp) { /* very dark */ if (sd->exposure_status == EXPOSURE_VERY_DARK) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_VERY_DARK; sd->exposure_count = 1; } } else { /* just dark */ if (sd->exposure_status == EXPOSURE_DARK) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_DARK; sd->exposure_count = 1; } } } else if (old_exposure <= LOW_EXP || exp_acc > light_exp) { /* light */ if (old_exposure <= VERY_LOW_EXP) { /* very light */ if (sd->exposure_status == EXPOSURE_VERY_LIGHT) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_VERY_LIGHT; sd->exposure_count = 1; } } else { /* just light */ if (sd->exposure_status == EXPOSURE_LIGHT) ++sd->exposure_count; else { sd->exposure_status = EXPOSURE_LIGHT; sd->exposure_count = 1; } } } else { /* not dark or light */ sd->exposure_status = EXPOSURE_NORMAL; } } framerate = atomic_read(&sd->fps); if (framerate > 30 || framerate < 1) framerate = 1; if (!sd->params.flickerControl.disabled) { /* Flicker control on */ if ((sd->exposure_status == EXPOSURE_VERY_DARK || sd->exposure_status == EXPOSURE_DARK) && sd->exposure_count >= DARK_TIME * framerate && sd->params.sensorFps.divisor < 2) { /* dark for too long */ ++sd->params.sensorFps.divisor; setfps = 1; sd->params.flickerControl.coarseJump = flicker_jumps[sd->mainsFreq] [sd->params.sensorFps.baserate] [sd->params.sensorFps.divisor]; setflicker = 1; new_exposure = sd->params.flickerControl.coarseJump-1; while (new_exposure < old_exposure / 2) new_exposure += sd->params.flickerControl.coarseJump; sd->params.exposure.coarseExpLo = new_exposure & 0xff; sd->params.exposure.coarseExpHi = new_exposure >> 8; setexp = 1; sd->exposure_status = EXPOSURE_NORMAL; gspca_dbg(gspca_dev, D_CONF, "Automatically decreasing sensor_fps\n"); } else if ((sd->exposure_status == EXPOSURE_VERY_LIGHT || sd->exposure_status == EXPOSURE_LIGHT) && sd->exposure_count >= LIGHT_TIME * framerate && sd->params.sensorFps.divisor > 0) { /* light for too long */ int max_exp = FIRMWARE_VERSION(1, 2) ? MAX_EXP_102 : MAX_EXP; --sd->params.sensorFps.divisor; setfps = 1; sd->params.flickerControl.coarseJump = flicker_jumps[sd->mainsFreq] [sd->params.sensorFps.baserate] [sd->params.sensorFps.divisor]; setflicker = 1; new_exposure = sd->params.flickerControl.coarseJump-1; while (new_exposure < 2 * old_exposure && new_exposure + sd->params.flickerControl.coarseJump < max_exp) new_exposure += sd->params.flickerControl.coarseJump; sd->params.exposure.coarseExpLo = new_exposure & 0xff; sd->params.exposure.coarseExpHi = new_exposure >> 8; setexp = 1; sd->exposure_status = EXPOSURE_NORMAL; gspca_dbg(gspca_dev, D_CONF, "Automatically increasing sensor_fps\n"); } } else { /* Flicker control off */ if ((sd->exposure_status == EXPOSURE_VERY_DARK || sd->exposure_status == EXPOSURE_DARK) && sd->exposure_count >= DARK_TIME * framerate && sd->params.sensorFps.divisor < 2) { /* dark for too long */ ++sd->params.sensorFps.divisor; setfps = 1; if (sd->params.exposure.gain > 0) { --sd->params.exposure.gain; setexp = 1; } sd->exposure_status = EXPOSURE_NORMAL; gspca_dbg(gspca_dev, D_CONF, "Automatically decreasing sensor_fps\n"); } else if ((sd->exposure_status == EXPOSURE_VERY_LIGHT || sd->exposure_status == EXPOSURE_LIGHT) && sd->exposure_count >= LIGHT_TIME * framerate && sd->params.sensorFps.divisor > 0) { /* light for too long */ --sd->params.sensorFps.divisor; setfps = 1; if (sd->params.exposure.gain < sd->params.exposure.gainMode - 1) { ++sd->params.exposure.gain; setexp = 1; } sd->exposure_status = EXPOSURE_NORMAL; gspca_dbg(gspca_dev, D_CONF, "Automatically increasing sensor_fps\n"); } } if (setexp) command_setexposure(gspca_dev); if (setfps) command_setsensorfps(gspca_dev); if (setflicker) command_setflickerctrl(gspca_dev); } /*-----------------------------------------------------------------*/ /* if flicker is switched off, this function switches it back on.It checks, however, that conditions are suitable before restarting it. This should only be called for firmware version 1.2. It also adjust the colour balance when an exposure step is detected - as long as flicker is running */ static void restart_flicker(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int cam_exposure, old_exp; if (!FIRMWARE_VERSION(1, 2)) return; cam_exposure = atomic_read(&sd->cam_exposure); if (sd->params.flickerControl.flickerMode == 0 || cam_exposure == 0) return; old_exp = sd->params.exposure.coarseExpLo + sd->params.exposure.coarseExpHi*256; /* see how far away camera exposure is from a valid flicker exposure value */ cam_exposure %= sd->params.flickerControl.coarseJump; if (!sd->params.flickerControl.disabled && cam_exposure <= sd->params.flickerControl.coarseJump - 3) { /* Flicker control auto-disabled */ sd->params.flickerControl.disabled = 1; } if (sd->params.flickerControl.disabled && old_exp > sd->params.flickerControl.coarseJump + ROUND_UP_EXP_FOR_FLICKER) { /* exposure is now high enough to switch flicker control back on */ set_flicker(gspca_dev, 1, 1); } } /* 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; sd->mainsFreq = FREQ_DEF == V4L2_CID_POWER_LINE_FREQUENCY_60HZ; reset_camera_params(gspca_dev); gspca_dbg(gspca_dev, D_PROBE, "cpia CPiA camera detected (vid/pid 0x%04X:0x%04X)\n", id->idVendor, id->idProduct); cam = &gspca_dev->cam; cam->cam_mode = mode; cam->nmodes = ARRAY_SIZE(mode); goto_low_power(gspca_dev); /* Check the firmware version. */ sd->params.version.firmwareVersion = 0; get_version_information(gspca_dev); if (sd->params.version.firmwareVersion != 1) { gspca_err(gspca_dev, "only firmware version 1 is supported (got: %d)\n", sd->params.version.firmwareVersion); return -ENODEV; } /* A bug in firmware 1-02 limits gainMode to 2 */ if (sd->params.version.firmwareRevision <= 2 && sd->params.exposure.gainMode > 2) { sd->params.exposure.gainMode = 2; } /* set QX3 detected flag */ sd->params.qx3.qx3_detected = (sd->params.pnpID.vendor == 0x0813 && sd->params.pnpID.product == 0x0001); return 0; } /* -- start the camera -- */ static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int priv, ret; /* Start the camera in low power mode */ if (goto_low_power(gspca_dev)) { if (sd->params.status.systemState != WARM_BOOT_STATE) { gspca_err(gspca_dev, "unexpected systemstate: %02x\n", sd->params.status.systemState); printstatus(gspca_dev, &sd->params); return -ENODEV; } /* FIXME: this is just dirty trial and error */ ret = goto_high_power(gspca_dev); if (ret) return ret; ret = do_command(gspca_dev, CPIA_COMMAND_DiscardFrame, 0, 0, 0, 0); if (ret) return ret; ret = goto_low_power(gspca_dev); if (ret) return ret; } /* procedure described in developer's guide p3-28 */ /* Check the firmware version. */ sd->params.version.firmwareVersion = 0; get_version_information(gspca_dev); /* The fatal error checking should be done after * the camera powers up (developer's guide p 3-38) */ /* Set streamState before transition to high power to avoid bug * in firmware 1-02 */ ret = do_command(gspca_dev, CPIA_COMMAND_ModifyCameraStatus, STREAMSTATE, 0, STREAM_NOT_READY, 0); if (ret) return ret; /* GotoHiPower */ ret = goto_high_power(gspca_dev); if (ret) return ret; /* Check the camera status */ ret = do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0); if (ret) return ret; if (sd->params.status.fatalError) { gspca_err(gspca_dev, "fatal_error: %04x, vp_status: %04x\n", sd->params.status.fatalError, sd->params.status.vpStatus); return -EIO; } /* VPVersion can't be retrieved before the camera is in HiPower, * so get it here instead of in get_version_information. */ ret = do_command(gspca_dev, CPIA_COMMAND_GetVPVersion, 0, 0, 0, 0); if (ret) return ret; /* Determine video mode settings */ sd->params.streamStartLine = 120; priv = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; if (priv & 0x01) { /* crop */ sd->params.roi.colStart = 2; sd->params.roi.rowStart = 6; } else { sd->params.roi.colStart = 0; sd->params.roi.rowStart = 0; } if (priv & 0x02) { /* quarter */ sd->params.format.videoSize = VIDEOSIZE_QCIF; sd->params.roi.colStart /= 2; sd->params.roi.rowStart /= 2; sd->params.streamStartLine /= 2; } else sd->params.format.videoSize = VIDEOSIZE_CIF; sd->params.roi.colEnd = sd->params.roi.colStart + (gspca_dev->pixfmt.width >> 3); sd->params.roi.rowEnd = sd->params.roi.rowStart + (gspca_dev->pixfmt.height >> 2); /* And now set the camera to a known state */ ret = do_command(gspca_dev, CPIA_COMMAND_SetGrabMode, CPIA_GRAB_CONTINEOUS, 0, 0, 0); if (ret) return ret; /* We start with compression disabled, as we need one uncompressed frame to handle later compressed frames */ ret = do_command(gspca_dev, CPIA_COMMAND_SetCompression, CPIA_COMPRESSION_NONE, NO_DECIMATION, 0, 0); if (ret) return ret; ret = command_setcompressiontarget(gspca_dev); if (ret) return ret; ret = command_setcolourparams(gspca_dev); if (ret) return ret; ret = command_setformat(gspca_dev); if (ret) return ret; ret = command_setyuvtresh(gspca_dev); if (ret) return ret; ret = command_setecptiming(gspca_dev); if (ret) return ret; ret = command_setcompressionparams(gspca_dev); if (ret) return ret; ret = command_setexposure(gspca_dev); if (ret) return ret; ret = command_setcolourbalance(gspca_dev); if (ret) return ret; ret = command_setsensorfps(gspca_dev); if (ret) return ret; ret = command_setapcor(gspca_dev); if (ret) return ret; ret = command_setflickerctrl(gspca_dev); if (ret) return ret; ret = command_setvloffset(gspca_dev); if (ret) return ret; /* Start stream */ ret = command_resume(gspca_dev); if (ret) return ret; /* Wait 6 frames before turning compression on for the sensor to get all settings and AEC/ACB to settle */ sd->first_frame = 6; sd->exposure_status = EXPOSURE_NORMAL; sd->exposure_count = 0; atomic_set(&sd->cam_exposure, 0); atomic_set(&sd->fps, 0); return 0; } static void sd_stopN(struct gspca_dev *gspca_dev) { struct sd *sd __maybe_unused = (struct sd *) gspca_dev; command_pause(gspca_dev); /* save camera state for later open (developers guide ch 3.5.3) */ save_camera_state(gspca_dev); /* GotoLoPower */ goto_low_power(gspca_dev); /* Update the camera status */ do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0); #if IS_ENABLED(CONFIG_INPUT) /* If the last button state is pressed, release it now! */ if (sd->params.qx3.button) { /* The camera latch will hold the pressed state until we reset the latch, so we do not reset sd->params.qx3.button now, to avoid a false keypress being reported the next sd_start */ input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); input_sync(gspca_dev->input_dev); } #endif } /* 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; int ret; /* Start / Stop the camera to make sure we are talking to a supported camera, and to get some information from it to print. */ ret = sd_start(gspca_dev); if (ret) return ret; /* Ensure the QX3 illuminators' states are restored upon resume, or disable the illuminator controls, if this isn't a QX3 */ if (sd->params.qx3.qx3_detected) command_setlights(gspca_dev); sd_stopN(gspca_dev); gspca_dbg(gspca_dev, D_PROBE, "CPIA Version: %d.%02d (%d.%d)\n", sd->params.version.firmwareVersion, sd->params.version.firmwareRevision, sd->params.version.vcVersion, sd->params.version.vcRevision); gspca_dbg(gspca_dev, D_PROBE, "CPIA PnP-ID: %04x:%04x:%04x", sd->params.pnpID.vendor, sd->params.pnpID.product, sd->params.pnpID.deviceRevision); gspca_dbg(gspca_dev, D_PROBE, "VP-Version: %d.%d %04x", sd->params.vpVersion.vpVersion, sd->params.vpVersion.vpRevision, sd->params.vpVersion.cameraHeadID); return 0; } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len) { struct sd *sd = (struct sd *) gspca_dev; /* Check for SOF */ if (len >= 64 && data[0] == MAGIC_0 && data[1] == MAGIC_1 && data[16] == sd->params.format.videoSize && data[17] == sd->params.format.subSample && data[18] == sd->params.format.yuvOrder && data[24] == sd->params.roi.colStart && data[25] == sd->params.roi.colEnd && data[26] == sd->params.roi.rowStart && data[27] == sd->params.roi.rowEnd) { u8 *image; atomic_set(&sd->cam_exposure, data[39] * 2); atomic_set(&sd->fps, data[41]); /* Check for proper EOF for last frame */ image = gspca_dev->image; if (image != NULL && gspca_dev->image_len > 4 && image[gspca_dev->image_len - 4] == 0xff && image[gspca_dev->image_len - 3] == 0xff && image[gspca_dev->image_len - 2] == 0xff && image[gspca_dev->image_len - 1] == 0xff) gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); return; } gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } static void sd_dq_callback(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; /* Set the normal compression settings once we have captured a few uncompressed frames (and AEC has hopefully settled) */ if (sd->first_frame) { sd->first_frame--; if (sd->first_frame == 0) command_setcompression(gspca_dev); } /* Switch flicker control back on if it got turned off */ restart_flicker(gspca_dev); /* If AEC is enabled, monitor the exposure and adjust the sensor frame rate if needed */ if (sd->params.exposure.expMode == 2) monitor_exposure(gspca_dev); /* Update our knowledge of the camera state */ do_command(gspca_dev, CPIA_COMMAND_GetExposure, 0, 0, 0, 0); do_command(gspca_dev, CPIA_COMMAND_ReadMCPorts, 0, 0, 0, 0); } 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: sd->params.colourParams.brightness = ctrl->val; sd->params.flickerControl.allowableOverExposure = find_over_exposure(sd->params.colourParams.brightness); gspca_dev->usb_err = command_setcolourparams(gspca_dev); if (!gspca_dev->usb_err) gspca_dev->usb_err = command_setflickerctrl(gspca_dev); break; case V4L2_CID_CONTRAST: sd->params.colourParams.contrast = ctrl->val; gspca_dev->usb_err = command_setcolourparams(gspca_dev); break; case V4L2_CID_SATURATION: sd->params.colourParams.saturation = ctrl->val; gspca_dev->usb_err = command_setcolourparams(gspca_dev); break; case V4L2_CID_POWER_LINE_FREQUENCY: sd->mainsFreq = ctrl->val == V4L2_CID_POWER_LINE_FREQUENCY_60HZ; sd->params.flickerControl.coarseJump = flicker_jumps[sd->mainsFreq] [sd->params.sensorFps.baserate] [sd->params.sensorFps.divisor]; gspca_dev->usb_err = set_flicker(gspca_dev, ctrl->val != V4L2_CID_POWER_LINE_FREQUENCY_DISABLED, gspca_dev->streaming); break; case V4L2_CID_ILLUMINATORS_1: sd->params.qx3.bottomlight = ctrl->val; gspca_dev->usb_err = command_setlights(gspca_dev); break; case V4L2_CID_ILLUMINATORS_2: sd->params.qx3.toplight = ctrl->val; gspca_dev->usb_err = command_setlights(gspca_dev); break; case CPIA1_CID_COMP_TARGET: sd->params.compressionTarget.frTargeting = ctrl->val; gspca_dev->usb_err = command_setcompressiontarget(gspca_dev); 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; static const char * const comp_target_menu[] = { "Quality", "Framerate", NULL }; static const struct v4l2_ctrl_config comp_target = { .ops = &sd_ctrl_ops, .id = CPIA1_CID_COMP_TARGET, .type = V4L2_CTRL_TYPE_MENU, .name = "Compression Target", .qmenu = comp_target_menu, .max = 1, .def = COMP_TARGET_DEF, }; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 7); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 100, 1, BRIGHTNESS_DEF); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_CONTRAST, 0, 96, 8, CONTRAST_DEF); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_SATURATION, 0, 100, 1, SATURATION_DEF); sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, V4L2_CID_POWER_LINE_FREQUENCY, V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, FREQ_DEF); if (sd->params.qx3.qx3_detected) { v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_ILLUMINATORS_1, 0, 1, 1, ILLUMINATORS_1_DEF); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_ILLUMINATORS_2, 0, 1, 1, ILLUMINATORS_2_DEF); } v4l2_ctrl_new_custom(hdl, &comp_target, NULL); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } return 0; } /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = sd_config, .init = sd_init, .init_controls = sd_init_controls, .start = sd_start, .stopN = sd_stopN, .dq_callback = sd_dq_callback, .pkt_scan = sd_pkt_scan, #if IS_ENABLED(CONFIG_INPUT) .other_input = 1, #endif }; /* -- module initialisation -- */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x0553, 0x0002)}, {USB_DEVICE(0x0813, 0x0001)}, {} }; 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); |
| 3 3 3 3 2 3 2 2 1 3 4 3 1 1 1 4 4 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 | /* * Copyright (c) 2014 Redpine Signals Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE 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. * */ #include <linux/module.h> #include <linux/types.h> #include <net/rsi_91x.h> #include "rsi_usb.h" #include "rsi_hal.h" #include "rsi_coex.h" /* Default operating mode is wlan STA + BT */ static u16 dev_oper_mode = DEV_OPMODE_STA_BT_DUAL; module_param(dev_oper_mode, ushort, 0444); MODULE_PARM_DESC(dev_oper_mode, DEV_OPMODE_PARAM_DESC); static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num, gfp_t flags); /** * rsi_usb_card_write() - This function writes to the USB Card. * @adapter: Pointer to the adapter structure. * @buf: Pointer to the buffer from where the data has to be taken. * @len: Length to be written. * @endpoint: Type of endpoint. * * Return: status: 0 on success, a negative error code on failure. */ static int rsi_usb_card_write(struct rsi_hw *adapter, u8 *buf, u16 len, u8 endpoint) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; int status; u8 *seg = dev->tx_buffer; int transfer; int ep = dev->bulkout_endpoint_addr[endpoint - 1]; memset(seg, 0, len + RSI_USB_TX_HEAD_ROOM); memcpy(seg + RSI_USB_TX_HEAD_ROOM, buf, len); len += RSI_USB_TX_HEAD_ROOM; transfer = len; status = usb_bulk_msg(dev->usbdev, usb_sndbulkpipe(dev->usbdev, ep), (void *)seg, (int)len, &transfer, USB_CTRL_SET_TIMEOUT); if (status < 0) { rsi_dbg(ERR_ZONE, "Card write failed with error code :%10d\n", status); dev->write_fail = 1; } return status; } /** * rsi_write_multiple() - This function writes multiple bytes of information * to the USB card. * @adapter: Pointer to the adapter structure. * @endpoint: Type of endpoint. * @data: Pointer to the data that has to be written. * @count: Number of multiple bytes to be written. * * Return: 0 on success, a negative error code on failure. */ static int rsi_write_multiple(struct rsi_hw *adapter, u8 endpoint, u8 *data, u32 count) { struct rsi_91x_usbdev *dev; if (!adapter) return -ENODEV; if (endpoint == 0) return -EINVAL; dev = adapter->rsi_dev; if (dev->write_fail) return -ENETDOWN; return rsi_usb_card_write(adapter, data, count, endpoint); } /** * rsi_find_bulk_in_and_out_endpoints() - This function initializes the bulk * endpoints to the device. * @interface: Pointer to the USB interface structure. * @adapter: Pointer to the adapter structure. * * Return: ret_val: 0 on success, -ENOMEM on failure. */ static int rsi_find_bulk_in_and_out_endpoints(struct usb_interface *interface, struct rsi_hw *adapter) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; __le16 buffer_size; int ii, bin_found = 0, bout_found = 0; iface_desc = interface->cur_altsetting; for (ii = 0; ii < iface_desc->desc.bNumEndpoints; ++ii) { endpoint = &(iface_desc->endpoint[ii].desc); if (!dev->bulkin_endpoint_addr[bin_found] && (endpoint->bEndpointAddress & USB_DIR_IN) && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)) { buffer_size = endpoint->wMaxPacketSize; dev->bulkin_size[bin_found] = buffer_size; dev->bulkin_endpoint_addr[bin_found] = endpoint->bEndpointAddress; bin_found++; } if (!dev->bulkout_endpoint_addr[bout_found] && !(endpoint->bEndpointAddress & USB_DIR_IN) && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)) { buffer_size = endpoint->wMaxPacketSize; dev->bulkout_endpoint_addr[bout_found] = endpoint->bEndpointAddress; dev->bulkout_size[bout_found] = buffer_size; bout_found++; } if (bin_found >= MAX_BULK_EP || bout_found >= MAX_BULK_EP) break; } if (!(dev->bulkin_endpoint_addr[0] && dev->bulkout_endpoint_addr[0])) { dev_err(&interface->dev, "missing wlan bulk endpoints\n"); return -EINVAL; } if (adapter->priv->coex_mode > 1) { if (!dev->bulkin_endpoint_addr[1]) { dev_err(&interface->dev, "missing bt bulk-in endpoint\n"); return -EINVAL; } } return 0; } #define RSI_USB_REQ_OUT (USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE) #define RSI_USB_REQ_IN (USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE) /* rsi_usb_reg_read() - This function reads data from given register address. * @usbdev: Pointer to the usb_device structure. * @reg: Address of the register to be read. * @value: Value to be read. * @len: length of data to be read. * * Return: status: 0 on success, a negative error code on failure. */ static int rsi_usb_reg_read(struct usb_device *usbdev, u32 reg, u16 *value, u16 len) { u8 *buf; int status = -ENOMEM; if (len > RSI_USB_CTRL_BUF_SIZE) return -EINVAL; buf = kmalloc(RSI_USB_CTRL_BUF_SIZE, GFP_KERNEL); if (!buf) return status; status = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), USB_VENDOR_REGISTER_READ, RSI_USB_REQ_IN, ((reg & 0xffff0000) >> 16), (reg & 0xffff), (void *)buf, len, USB_CTRL_GET_TIMEOUT); *value = (buf[0] | (buf[1] << 8)); if (status < 0) { rsi_dbg(ERR_ZONE, "%s: Reg read failed with error code :%d\n", __func__, status); } kfree(buf); return status; } /** * rsi_usb_reg_write() - This function writes the given data into the given * register address. * @usbdev: Pointer to the usb_device structure. * @reg: Address of the register. * @value: Value to write. * @len: Length of data to be written. * * Return: status: 0 on success, a negative error code on failure. */ static int rsi_usb_reg_write(struct usb_device *usbdev, u32 reg, u32 value, u16 len) { u8 *usb_reg_buf; int status = -ENOMEM; if (len > RSI_USB_CTRL_BUF_SIZE) return -EINVAL; usb_reg_buf = kmalloc(RSI_USB_CTRL_BUF_SIZE, GFP_KERNEL); if (!usb_reg_buf) return status; usb_reg_buf[0] = value & 0x00ff; usb_reg_buf[1] = (value & 0xff00) >> 8; usb_reg_buf[2] = (value & 0x00ff0000) >> 16; usb_reg_buf[3] = (value & 0xff000000) >> 24; status = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), USB_VENDOR_REGISTER_WRITE, RSI_USB_REQ_OUT, (reg & 0xffff0000) >> 16, reg & 0xffff, (void *)usb_reg_buf, len, USB_CTRL_SET_TIMEOUT); if (status < 0) { rsi_dbg(ERR_ZONE, "%s: Reg write failed with error code :%d\n", __func__, status); } kfree(usb_reg_buf); return status; } /** * rsi_rx_done_handler() - This function is called when a packet is received * from USB stack. This is callback to receive done. * @urb: Received URB. * * Return: None. */ static void rsi_rx_done_handler(struct urb *urb) { struct rx_usb_ctrl_block *rx_cb = urb->context; struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)rx_cb->data; int status = -EINVAL; if (!rx_cb->rx_skb) return; if (urb->status) { dev_kfree_skb(rx_cb->rx_skb); rx_cb->rx_skb = NULL; return; } if (urb->actual_length <= 0 || urb->actual_length > rx_cb->rx_skb->len) { rsi_dbg(INFO_ZONE, "%s: Invalid packet length = %d\n", __func__, urb->actual_length); goto out; } if (skb_queue_len(&dev->rx_q) >= RSI_MAX_RX_PKTS) { rsi_dbg(INFO_ZONE, "Max RX packets reached\n"); goto out; } skb_trim(rx_cb->rx_skb, urb->actual_length); skb_queue_tail(&dev->rx_q, rx_cb->rx_skb); rsi_set_event(&dev->rx_thread.event); status = 0; out: if (rsi_rx_urb_submit(dev->priv, rx_cb->ep_num, GFP_ATOMIC)) rsi_dbg(ERR_ZONE, "%s: Failed in urb submission", __func__); if (status) { dev_kfree_skb(rx_cb->rx_skb); rx_cb->rx_skb = NULL; } } static void rsi_rx_urb_kill(struct rsi_hw *adapter, u8 ep_num) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; struct rx_usb_ctrl_block *rx_cb = &dev->rx_cb[ep_num - 1]; struct urb *urb = rx_cb->rx_urb; usb_kill_urb(urb); } /** * rsi_rx_urb_submit() - This function submits the given URB to the USB stack. * @adapter: Pointer to the adapter structure. * @ep_num: Endpoint number. * @mem_flags: The type of memory to allocate. * * Return: 0 on success, a negative error code on failure. */ static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num, gfp_t mem_flags) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; struct rx_usb_ctrl_block *rx_cb = &dev->rx_cb[ep_num - 1]; struct urb *urb = rx_cb->rx_urb; int status; struct sk_buff *skb; u8 dword_align_bytes = 0; skb = dev_alloc_skb(RSI_MAX_RX_USB_PKT_SIZE); if (!skb) return -ENOMEM; skb_reserve(skb, MAX_DWORD_ALIGN_BYTES); skb_put(skb, RSI_MAX_RX_USB_PKT_SIZE - MAX_DWORD_ALIGN_BYTES); dword_align_bytes = (unsigned long)skb->data & 0x3f; if (dword_align_bytes > 0) skb_push(skb, dword_align_bytes); urb->transfer_buffer = skb->data; rx_cb->rx_skb = skb; usb_fill_bulk_urb(urb, dev->usbdev, usb_rcvbulkpipe(dev->usbdev, dev->bulkin_endpoint_addr[ep_num - 1]), urb->transfer_buffer, skb->len, rsi_rx_done_handler, rx_cb); status = usb_submit_urb(urb, mem_flags); if (status) { rsi_dbg(ERR_ZONE, "%s: Failed in urb submission\n", __func__); dev_kfree_skb(skb); } return status; } static int rsi_usb_read_register_multiple(struct rsi_hw *adapter, u32 addr, u8 *data, u16 count) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; u8 *buf; u16 transfer; int status; if (!addr) return -EINVAL; buf = kzalloc(RSI_USB_BUF_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; while (count) { transfer = min_t(u16, count, RSI_USB_BUF_SIZE); status = usb_control_msg(dev->usbdev, usb_rcvctrlpipe(dev->usbdev, 0), USB_VENDOR_REGISTER_READ, RSI_USB_REQ_IN, ((addr & 0xffff0000) >> 16), (addr & 0xffff), (void *)buf, transfer, USB_CTRL_GET_TIMEOUT); if (status < 0) { rsi_dbg(ERR_ZONE, "Reg read failed with error code :%d\n", status); kfree(buf); return status; } memcpy(data, buf, transfer); count -= transfer; data += transfer; addr += transfer; } kfree(buf); return 0; } /** * rsi_usb_write_register_multiple() - This function writes multiple bytes of * information to multiple registers. * @adapter: Pointer to the adapter structure. * @addr: Address of the register. * @data: Pointer to the data that has to be written. * @count: Number of multiple bytes to be written on to the registers. * * Return: status: 0 on success, a negative error code on failure. */ static int rsi_usb_write_register_multiple(struct rsi_hw *adapter, u32 addr, u8 *data, u16 count) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; u8 *buf; u16 transfer; int status = 0; buf = kzalloc(RSI_USB_BUF_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; while (count) { transfer = min_t(u16, count, RSI_USB_BUF_SIZE); memcpy(buf, data, transfer); status = usb_control_msg(dev->usbdev, usb_sndctrlpipe(dev->usbdev, 0), USB_VENDOR_REGISTER_WRITE, RSI_USB_REQ_OUT, ((addr & 0xffff0000) >> 16), (addr & 0xffff), (void *)buf, transfer, USB_CTRL_SET_TIMEOUT); if (status < 0) { rsi_dbg(ERR_ZONE, "Reg write failed with error code :%d\n", status); kfree(buf); return status; } count -= transfer; data += transfer; addr += transfer; } kfree(buf); return 0; } /** *rsi_usb_host_intf_write_pkt() - This function writes the packet to the * USB card. * @adapter: Pointer to the adapter structure. * @pkt: Pointer to the data to be written on to the card. * @len: Length of the data to be written on to the card. * * Return: 0 on success, a negative error code on failure. */ static int rsi_usb_host_intf_write_pkt(struct rsi_hw *adapter, u8 *pkt, u32 len) { u32 queueno = ((pkt[1] >> 4) & 0x7); u8 endpoint; endpoint = ((queueno == RSI_WIFI_MGMT_Q || queueno == RSI_WIFI_DATA_Q || queueno == RSI_COEX_Q) ? WLAN_EP : BT_EP); return rsi_write_multiple(adapter, endpoint, (u8 *)pkt, len); } static int rsi_usb_master_reg_read(struct rsi_hw *adapter, u32 reg, u32 *value, u16 len) { struct usb_device *usbdev = ((struct rsi_91x_usbdev *)adapter->rsi_dev)->usbdev; u16 temp; int ret; ret = rsi_usb_reg_read(usbdev, reg, &temp, len); if (ret < 0) return ret; *value = temp; return 0; } static int rsi_usb_master_reg_write(struct rsi_hw *adapter, unsigned long reg, unsigned long value, u16 len) { struct usb_device *usbdev = ((struct rsi_91x_usbdev *)adapter->rsi_dev)->usbdev; return rsi_usb_reg_write(usbdev, reg, value, len); } static int rsi_usb_load_data_master_write(struct rsi_hw *adapter, u32 base_address, u32 instructions_sz, u16 block_size, u8 *ta_firmware) { u16 num_blocks; u32 cur_indx, i; u8 temp_buf[256]; int status; num_blocks = instructions_sz / block_size; rsi_dbg(INFO_ZONE, "num_blocks: %d\n", num_blocks); for (cur_indx = 0, i = 0; i < num_blocks; i++, cur_indx += block_size) { memcpy(temp_buf, ta_firmware + cur_indx, block_size); status = rsi_usb_write_register_multiple(adapter, base_address, (u8 *)(temp_buf), block_size); if (status < 0) return status; rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i); base_address += block_size; } if (instructions_sz % block_size) { memset(temp_buf, 0, block_size); memcpy(temp_buf, ta_firmware + cur_indx, instructions_sz % block_size); status = rsi_usb_write_register_multiple (adapter, base_address, (u8 *)temp_buf, instructions_sz % block_size); if (status < 0) return status; rsi_dbg(INFO_ZONE, "Written Last Block in Address 0x%x Successfully\n", cur_indx); } return 0; } static struct rsi_host_intf_ops usb_host_intf_ops = { .write_pkt = rsi_usb_host_intf_write_pkt, .read_reg_multiple = rsi_usb_read_register_multiple, .write_reg_multiple = rsi_usb_write_register_multiple, .master_reg_read = rsi_usb_master_reg_read, .master_reg_write = rsi_usb_master_reg_write, .load_data_master_write = rsi_usb_load_data_master_write, }; /** * rsi_deinit_usb_interface() - This function deinitializes the usb interface. * @adapter: Pointer to the adapter structure. * * Return: None. */ static void rsi_deinit_usb_interface(struct rsi_hw *adapter) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; rsi_kill_thread(&dev->rx_thread); usb_free_urb(dev->rx_cb[0].rx_urb); if (adapter->priv->coex_mode > 1) usb_free_urb(dev->rx_cb[1].rx_urb); kfree(dev->tx_buffer); } static int rsi_usb_init_rx(struct rsi_hw *adapter) { struct rsi_91x_usbdev *dev = adapter->rsi_dev; struct rx_usb_ctrl_block *rx_cb; u8 idx, num_rx_cb; num_rx_cb = (adapter->priv->coex_mode > 1 ? 2 : 1); for (idx = 0; idx < num_rx_cb; idx++) { rx_cb = &dev->rx_cb[idx]; rx_cb->rx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!rx_cb->rx_urb) { rsi_dbg(ERR_ZONE, "Failed alloc rx urb[%d]\n", idx); goto err; } rx_cb->ep_num = idx + 1; rx_cb->data = (void *)dev; } skb_queue_head_init(&dev->rx_q); rsi_init_event(&dev->rx_thread.event); if (rsi_create_kthread(adapter->priv, &dev->rx_thread, rsi_usb_rx_thread, "RX-Thread")) { rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__); goto err; } return 0; err: usb_free_urb(dev->rx_cb[0].rx_urb); if (adapter->priv->coex_mode > 1) usb_free_urb(dev->rx_cb[1].rx_urb); return -1; } /** * rsi_init_usb_interface() - This function initializes the usb interface. * @adapter: Pointer to the adapter structure. * @pfunction: Pointer to USB interface structure. * * Return: 0 on success, a negative error code on failure. */ static int rsi_init_usb_interface(struct rsi_hw *adapter, struct usb_interface *pfunction) { struct rsi_91x_usbdev *rsi_dev; int status; rsi_dev = kzalloc(sizeof(*rsi_dev), GFP_KERNEL); if (!rsi_dev) return -ENOMEM; adapter->rsi_dev = rsi_dev; rsi_dev->usbdev = interface_to_usbdev(pfunction); rsi_dev->priv = (void *)adapter; if (rsi_find_bulk_in_and_out_endpoints(pfunction, adapter)) { status = -EINVAL; goto fail_eps; } adapter->device = &pfunction->dev; usb_set_intfdata(pfunction, adapter); rsi_dev->tx_buffer = kmalloc(2048, GFP_KERNEL); if (!rsi_dev->tx_buffer) { status = -ENOMEM; goto fail_eps; } if (rsi_usb_init_rx(adapter)) { rsi_dbg(ERR_ZONE, "Failed to init RX handle\n"); status = -ENOMEM; goto fail_rx; } rsi_dev->tx_blk_size = 252; adapter->block_size = rsi_dev->tx_blk_size; /* Initializing function callbacks */ adapter->check_hw_queue_status = rsi_usb_check_queue_status; adapter->determine_event_timeout = rsi_usb_event_timeout; adapter->rsi_host_intf = RSI_HOST_INTF_USB; adapter->host_intf_ops = &usb_host_intf_ops; #ifdef CONFIG_RSI_DEBUGFS /* In USB, one less than the MAX_DEBUGFS_ENTRIES entries is required */ adapter->num_debugfs_entries = (MAX_DEBUGFS_ENTRIES - 1); #endif rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__); return 0; fail_rx: kfree(rsi_dev->tx_buffer); fail_eps: return status; } static int usb_ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data, u16 len_in_bits) { int ret; ret = rsi_usb_master_reg_write (adapter, RSI_GSPI_DATA_REG1, ((addr << 6) | ((data >> 16) & 0xffff)), 2); if (ret < 0) return ret; ret = rsi_usb_master_reg_write(adapter, RSI_GSPI_DATA_REG0, (data & 0xffff), 2); if (ret < 0) return ret; /* Initializing GSPI for ULP read/writes */ rsi_usb_master_reg_write(adapter, RSI_GSPI_CTRL_REG0, RSI_GSPI_CTRL_REG0_VALUE, 2); ret = rsi_usb_master_reg_write(adapter, RSI_GSPI_CTRL_REG1, ((len_in_bits - 1) | RSI_GSPI_TRIG), 2); if (ret < 0) return ret; msleep(20); return 0; } static int rsi_reset_card(struct rsi_hw *adapter) { int ret; rsi_dbg(INFO_ZONE, "Resetting Card...\n"); rsi_usb_master_reg_write(adapter, RSI_TA_HOLD_REG, 0xE, 4); /* This msleep will ensure Thread-Arch processor to go to hold * and any pending dma transfers to rf in device to finish. */ msleep(100); ret = rsi_usb_master_reg_write(adapter, SWBL_REGOUT, RSI_FW_WDT_DISABLE_REQ, RSI_COMMON_REG_SIZE); if (ret < 0) { rsi_dbg(ERR_ZONE, "Disabling firmware watchdog timer failed\n"); goto fail; } if (adapter->device_model != RSI_DEV_9116) { ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_1, RSI_ULP_WRITE_2, 32); if (ret < 0) goto fail; ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2, RSI_ULP_WRITE_0, 32); if (ret < 0) goto fail; ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1, RSI_ULP_WRITE_50, 32); if (ret < 0) goto fail; ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2, RSI_ULP_WRITE_0, 32); if (ret < 0) goto fail; ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE, RSI_ULP_TIMER_ENABLE, 32); if (ret < 0) goto fail; } else { ret = rsi_usb_master_reg_write(adapter, NWP_WWD_INTERRUPT_TIMER, NWP_WWD_INT_TIMER_CLKS, RSI_9116_REG_SIZE); if (ret < 0) goto fail; ret = rsi_usb_master_reg_write(adapter, NWP_WWD_SYSTEM_RESET_TIMER, NWP_WWD_SYS_RESET_TIMER_CLKS, RSI_9116_REG_SIZE); if (ret < 0) goto fail; ret = rsi_usb_master_reg_write(adapter, NWP_WWD_MODE_AND_RSTART, NWP_WWD_TIMER_DISABLE, RSI_9116_REG_SIZE); if (ret < 0) goto fail; } rsi_dbg(INFO_ZONE, "Reset card done\n"); return ret; fail: rsi_dbg(ERR_ZONE, "Reset card failed\n"); return ret; } /** * rsi_probe() - This function is called by kernel when the driver provided * Vendor and device IDs are matched. All the initialization * work is done here. * @pfunction: Pointer to the USB interface structure. * @id: Pointer to the usb_device_id structure. * * Return: 0 on success, a negative error code on failure. */ static int rsi_probe(struct usb_interface *pfunction, const struct usb_device_id *id) { struct rsi_hw *adapter; struct rsi_91x_usbdev *dev; u16 fw_status; int status; rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__); adapter = rsi_91x_init(dev_oper_mode); if (!adapter) { rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n", __func__); return -ENOMEM; } adapter->rsi_host_intf = RSI_HOST_INTF_USB; status = rsi_init_usb_interface(adapter, pfunction); if (status) { rsi_dbg(ERR_ZONE, "%s: Failed to init usb interface\n", __func__); goto err; } rsi_dbg(ERR_ZONE, "%s: Initialized os intf ops\n", __func__); if (id->idProduct == RSI_USB_PID_9113) { rsi_dbg(INIT_ZONE, "%s: 9113 module detected\n", __func__); adapter->device_model = RSI_DEV_9113; } else if (id->idProduct == RSI_USB_PID_9116) { rsi_dbg(INIT_ZONE, "%s: 9116 module detected\n", __func__); adapter->device_model = RSI_DEV_9116; } else { rsi_dbg(ERR_ZONE, "%s: Unsupported RSI device id 0x%x\n", __func__, id->idProduct); status = -ENODEV; goto err1; } dev = adapter->rsi_dev; status = rsi_usb_reg_read(dev->usbdev, FW_STATUS_REG, &fw_status, 2); if (status < 0) goto err1; else fw_status &= 1; if (!fw_status) { rsi_dbg(INIT_ZONE, "Loading firmware...\n"); status = rsi_hal_device_init(adapter); if (status) { rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__); goto err1; } rsi_dbg(INIT_ZONE, "%s: Device Init Done\n", __func__); } status = rsi_rx_urb_submit(adapter, WLAN_EP, GFP_KERNEL); if (status) goto err1; if (adapter->priv->coex_mode > 1) { status = rsi_rx_urb_submit(adapter, BT_EP, GFP_KERNEL); if (status) goto err_kill_wlan_urb; } return 0; err_kill_wlan_urb: rsi_rx_urb_kill(adapter, WLAN_EP); err1: rsi_deinit_usb_interface(adapter); err: rsi_91x_deinit(adapter); rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__); return status; } /** * rsi_disconnect() - This function performs the reverse of the probe function, * it deinitialize the driver structure. * @pfunction: Pointer to the USB interface structure. * * Return: None. */ static void rsi_disconnect(struct usb_interface *pfunction) { struct rsi_hw *adapter = usb_get_intfdata(pfunction); if (!adapter) return; rsi_mac80211_detach(adapter); if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 && adapter->priv->bt_adapter) { rsi_bt_ops.detach(adapter->priv->bt_adapter); adapter->priv->bt_adapter = NULL; } if (adapter->priv->coex_mode > 1) rsi_rx_urb_kill(adapter, BT_EP); rsi_rx_urb_kill(adapter, WLAN_EP); rsi_reset_card(adapter); rsi_deinit_usb_interface(adapter); rsi_91x_deinit(adapter); rsi_dbg(INFO_ZONE, "%s: Deinitialization completed\n", __func__); } #ifdef CONFIG_PM static int rsi_suspend(struct usb_interface *intf, pm_message_t message) { /* Not yet implemented */ return -ENOSYS; } static int rsi_resume(struct usb_interface *intf) { /* Not yet implemented */ return -ENOSYS; } #endif static const struct usb_device_id rsi_dev_table[] = { { USB_DEVICE(RSI_USB_VENDOR_ID, RSI_USB_PID_9113) }, { USB_DEVICE(RSI_USB_VENDOR_ID, RSI_USB_PID_9116) }, { /* Blank */}, }; static struct usb_driver rsi_driver = { .name = "RSI-USB WLAN", .probe = rsi_probe, .disconnect = rsi_disconnect, .id_table = rsi_dev_table, #ifdef CONFIG_PM .suspend = rsi_suspend, .resume = rsi_resume, #endif }; module_usb_driver(rsi_driver); MODULE_AUTHOR("Redpine Signals Inc"); MODULE_DESCRIPTION("Common USB layer for RSI drivers"); MODULE_DEVICE_TABLE(usb, rsi_dev_table); MODULE_FIRMWARE(FIRMWARE_RSI9113); MODULE_VERSION("0.1"); MODULE_LICENSE("Dual BSD/GPL"); |
| 81 136 131 131 131 130 137 137 136 119 3 119 119 119 119 117 119 119 119 119 119 137 137 250 251 274 61 62 62 62 62 212 212 212 81 131 80 81 80 81 81 175 176 175 1 175 1 176 149 175 | 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 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 | // SPDX-License-Identifier: GPL-2.0-only /* * Media device * * Copyright (C) 2010 Nokia Corporation * * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> * Sakari Ailus <sakari.ailus@iki.fi> */ #include <linux/compat.h> #include <linux/export.h> #include <linux/idr.h> #include <linux/ioctl.h> #include <linux/media.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/usb.h> #include <linux/version.h> #include <media/media-device.h> #include <media/media-devnode.h> #include <media/media-entity.h> #include <media/media-request.h> #ifdef CONFIG_MEDIA_CONTROLLER /* * Legacy defines from linux/media.h. This is the only place we need this * so we just define it here. The media.h header doesn't expose it to the * kernel to prevent it from being used by drivers, but here (and only here!) * we need it to handle the legacy behavior. */ #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff #define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_F_OLD_BASE | \ MEDIA_ENT_SUBTYPE_MASK) /* ----------------------------------------------------------------------------- * Userspace API */ static inline void __user *media_get_uptr(__u64 arg) { return (void __user *)(uintptr_t)arg; } static int media_device_open(struct file *filp) { return 0; } static int media_device_close(struct file *filp) { return 0; } static long media_device_get_info(struct media_device *dev, void *arg) { struct media_device_info *info = arg; memset(info, 0, sizeof(*info)); if (dev->driver_name[0]) strscpy(info->driver, dev->driver_name, sizeof(info->driver)); else strscpy(info->driver, dev->dev->driver->name, sizeof(info->driver)); strscpy(info->model, dev->model, sizeof(info->model)); strscpy(info->serial, dev->serial, sizeof(info->serial)); strscpy(info->bus_info, dev->bus_info, sizeof(info->bus_info)); info->media_version = LINUX_VERSION_CODE; info->driver_version = info->media_version; info->hw_revision = dev->hw_revision; return 0; } static struct media_entity *find_entity(struct media_device *mdev, u32 id) { struct media_entity *entity; int next = id & MEDIA_ENT_ID_FLAG_NEXT; id &= ~MEDIA_ENT_ID_FLAG_NEXT; media_device_for_each_entity(entity, mdev) { if (((media_entity_id(entity) == id) && !next) || ((media_entity_id(entity) > id) && next)) { return entity; } } return NULL; } static long media_device_enum_entities(struct media_device *mdev, void *arg) { struct media_entity_desc *entd = arg; struct media_entity *ent; ent = find_entity(mdev, entd->id); if (ent == NULL) return -EINVAL; memset(entd, 0, sizeof(*entd)); entd->id = media_entity_id(ent); if (ent->name) strscpy(entd->name, ent->name, sizeof(entd->name)); entd->type = ent->function; entd->revision = 0; /* Unused */ entd->flags = ent->flags; entd->group_id = 0; /* Unused */ entd->pads = ent->num_pads; entd->links = ent->num_links - ent->num_backlinks; /* * Workaround for a bug at media-ctl <= v1.10 that makes it to * do the wrong thing if the entity function doesn't belong to * either MEDIA_ENT_F_OLD_BASE or MEDIA_ENT_F_OLD_SUBDEV_BASE * Ranges. * * Non-subdevices are expected to be at the MEDIA_ENT_F_OLD_BASE, * or, otherwise, will be silently ignored by media-ctl when * printing the graphviz diagram. So, map them into the devnode * old range. */ if (ent->function < MEDIA_ENT_F_OLD_BASE || ent->function > MEDIA_ENT_F_TUNER) { if (is_media_entity_v4l2_subdev(ent)) entd->type = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; else if (ent->function != MEDIA_ENT_F_IO_V4L) entd->type = MEDIA_ENT_T_DEVNODE_UNKNOWN; } memcpy(&entd->raw, &ent->info, sizeof(ent->info)); return 0; } static void media_device_kpad_to_upad(const struct media_pad *kpad, struct media_pad_desc *upad) { upad->entity = media_entity_id(kpad->entity); upad->index = kpad->index; upad->flags = kpad->flags; } static long media_device_enum_links(struct media_device *mdev, void *arg) { struct media_links_enum *links = arg; struct media_entity *entity; entity = find_entity(mdev, links->entity); if (entity == NULL) return -EINVAL; if (links->pads) { unsigned int p; for (p = 0; p < entity->num_pads; p++) { struct media_pad_desc pad; memset(&pad, 0, sizeof(pad)); media_device_kpad_to_upad(&entity->pads[p], &pad); if (copy_to_user(&links->pads[p], &pad, sizeof(pad))) return -EFAULT; } } if (links->links) { struct media_link *link; struct media_link_desc __user *ulink_desc = links->links; list_for_each_entry(link, &entity->links, list) { struct media_link_desc klink_desc; /* Ignore backlinks. */ if (link->source->entity != entity) continue; memset(&klink_desc, 0, sizeof(klink_desc)); media_device_kpad_to_upad(link->source, &klink_desc.source); media_device_kpad_to_upad(link->sink, &klink_desc.sink); klink_desc.flags = link->flags; if (copy_to_user(ulink_desc, &klink_desc, sizeof(*ulink_desc))) return -EFAULT; ulink_desc++; } } memset(links->reserved, 0, sizeof(links->reserved)); return 0; } static long media_device_setup_link(struct media_device *mdev, void *arg) { struct media_link_desc *linkd = arg; struct media_link *link = NULL; struct media_entity *source; struct media_entity *sink; /* Find the source and sink entities and link. */ source = find_entity(mdev, linkd->source.entity); sink = find_entity(mdev, linkd->sink.entity); if (source == NULL || sink == NULL) return -EINVAL; if (linkd->source.index >= source->num_pads || linkd->sink.index >= sink->num_pads) return -EINVAL; link = media_entity_find_link(&source->pads[linkd->source.index], &sink->pads[linkd->sink.index]); if (link == NULL) return -EINVAL; memset(linkd->reserved, 0, sizeof(linkd->reserved)); /* Setup the link on both entities. */ return __media_entity_setup_link(link, linkd->flags); } static long media_device_get_topology(struct media_device *mdev, void *arg) { struct media_v2_topology *topo = arg; struct media_entity *entity; struct media_interface *intf; struct media_pad *pad; struct media_link *link; struct media_v2_entity kentity, __user *uentity; struct media_v2_interface kintf, __user *uintf; struct media_v2_pad kpad, __user *upad; struct media_v2_link klink, __user *ulink; unsigned int i; int ret = 0; topo->topology_version = mdev->topology_version; /* Get entities and number of entities */ i = 0; uentity = media_get_uptr(topo->ptr_entities); media_device_for_each_entity(entity, mdev) { i++; if (ret || !uentity) continue; if (i > topo->num_entities) { ret = -ENOSPC; continue; } /* Copy fields to userspace struct if not error */ memset(&kentity, 0, sizeof(kentity)); kentity.id = entity->graph_obj.id; kentity.function = entity->function; kentity.flags = entity->flags; strscpy(kentity.name, entity->name, sizeof(kentity.name)); if (copy_to_user(uentity, &kentity, sizeof(kentity))) ret = -EFAULT; uentity++; } topo->num_entities = i; topo->reserved1 = 0; /* Get interfaces and number of interfaces */ i = 0; uintf = media_get_uptr(topo->ptr_interfaces); media_device_for_each_intf(intf, mdev) { i++; if (ret || !uintf) continue; if (i > topo->num_interfaces) { ret = -ENOSPC; continue; } memset(&kintf, 0, sizeof(kintf)); /* Copy intf fields to userspace struct */ kintf.id = intf->graph_obj.id; kintf.intf_type = intf->type; kintf.flags = intf->flags; if (media_type(&intf->graph_obj) == MEDIA_GRAPH_INTF_DEVNODE) { struct media_intf_devnode *devnode; devnode = intf_to_devnode(intf); kintf.devnode.major = devnode->major; kintf.devnode.minor = devnode->minor; } if (copy_to_user(uintf, &kintf, sizeof(kintf))) ret = -EFAULT; uintf++; } topo->num_interfaces = i; topo->reserved2 = 0; /* Get pads and number of pads */ i = 0; upad = media_get_uptr(topo->ptr_pads); media_device_for_each_pad(pad, mdev) { i++; if (ret || !upad) continue; if (i > topo->num_pads) { ret = -ENOSPC; continue; } memset(&kpad, 0, sizeof(kpad)); /* Copy pad fields to userspace struct */ kpad.id = pad->graph_obj.id; kpad.entity_id = pad->entity->graph_obj.id; kpad.flags = pad->flags; kpad.index = pad->index; if (copy_to_user(upad, &kpad, sizeof(kpad))) ret = -EFAULT; upad++; } topo->num_pads = i; topo->reserved3 = 0; /* Get links and number of links */ i = 0; ulink = media_get_uptr(topo->ptr_links); media_device_for_each_link(link, mdev) { if (link->is_backlink) continue; i++; if (ret || !ulink) continue; if (i > topo->num_links) { ret = -ENOSPC; continue; } memset(&klink, 0, sizeof(klink)); /* Copy link fields to userspace struct */ klink.id = link->graph_obj.id; klink.source_id = link->gobj0->id; klink.sink_id = link->gobj1->id; klink.flags = link->flags; if (copy_to_user(ulink, &klink, sizeof(klink))) ret = -EFAULT; ulink++; } topo->num_links = i; topo->reserved4 = 0; return ret; } static long media_device_request_alloc(struct media_device *mdev, void *arg) { int *alloc_fd = arg; if (!mdev->ops || !mdev->ops->req_validate || !mdev->ops->req_queue) return -ENOTTY; return media_request_alloc(mdev, alloc_fd); } static long copy_arg_from_user(void *karg, void __user *uarg, unsigned int cmd) { if ((_IOC_DIR(cmd) & _IOC_WRITE) && copy_from_user(karg, uarg, _IOC_SIZE(cmd))) return -EFAULT; return 0; } static long copy_arg_to_user(void __user *uarg, void *karg, unsigned int cmd) { if ((_IOC_DIR(cmd) & _IOC_READ) && copy_to_user(uarg, karg, _IOC_SIZE(cmd))) return -EFAULT; return 0; } /* Do acquire the graph mutex */ #define MEDIA_IOC_FL_GRAPH_MUTEX BIT(0) #define MEDIA_IOC_ARG(__cmd, func, fl, from_user, to_user) \ [_IOC_NR(MEDIA_IOC_##__cmd)] = { \ .cmd = MEDIA_IOC_##__cmd, \ .fn = func, \ .flags = fl, \ .arg_from_user = from_user, \ .arg_to_user = to_user, \ } #define MEDIA_IOC(__cmd, func, fl) \ MEDIA_IOC_ARG(__cmd, func, fl, copy_arg_from_user, copy_arg_to_user) /* the table is indexed by _IOC_NR(cmd) */ struct media_ioctl_info { unsigned int cmd; unsigned short flags; long (*fn)(struct media_device *dev, void *arg); long (*arg_from_user)(void *karg, void __user *uarg, unsigned int cmd); long (*arg_to_user)(void __user *uarg, void *karg, unsigned int cmd); }; static const struct media_ioctl_info ioctl_info[] = { MEDIA_IOC(DEVICE_INFO, media_device_get_info, MEDIA_IOC_FL_GRAPH_MUTEX), MEDIA_IOC(ENUM_ENTITIES, media_device_enum_entities, MEDIA_IOC_FL_GRAPH_MUTEX), MEDIA_IOC(ENUM_LINKS, media_device_enum_links, MEDIA_IOC_FL_GRAPH_MUTEX), MEDIA_IOC(SETUP_LINK, media_device_setup_link, MEDIA_IOC_FL_GRAPH_MUTEX), MEDIA_IOC(G_TOPOLOGY, media_device_get_topology, MEDIA_IOC_FL_GRAPH_MUTEX), MEDIA_IOC(REQUEST_ALLOC, media_device_request_alloc, 0), }; static long media_device_ioctl(struct file *filp, unsigned int cmd, unsigned long __arg) { struct media_devnode *devnode = media_devnode_data(filp); struct media_device *dev = devnode->media_dev; const struct media_ioctl_info *info; void __user *arg = (void __user *)__arg; char __karg[256], *karg = __karg; long ret; if (_IOC_NR(cmd) >= ARRAY_SIZE(ioctl_info) || ioctl_info[_IOC_NR(cmd)].cmd != cmd) return -ENOIOCTLCMD; info = &ioctl_info[_IOC_NR(cmd)]; if (_IOC_SIZE(info->cmd) > sizeof(__karg)) { karg = kmalloc(_IOC_SIZE(info->cmd), GFP_KERNEL); if (!karg) return -ENOMEM; } if (info->arg_from_user) { ret = info->arg_from_user(karg, arg, cmd); if (ret) goto out_free; } if (info->flags & MEDIA_IOC_FL_GRAPH_MUTEX) mutex_lock(&dev->graph_mutex); ret = info->fn(dev, karg); if (info->flags & MEDIA_IOC_FL_GRAPH_MUTEX) mutex_unlock(&dev->graph_mutex); if (!ret && info->arg_to_user) ret = info->arg_to_user(arg, karg, cmd); out_free: if (karg != __karg) kfree(karg); return ret; } #ifdef CONFIG_COMPAT struct media_links_enum32 { __u32 entity; compat_uptr_t pads; /* struct media_pad_desc * */ compat_uptr_t links; /* struct media_link_desc * */ __u32 reserved[4]; }; static long media_device_enum_links32(struct media_device *mdev, struct media_links_enum32 __user *ulinks) { struct media_links_enum links; compat_uptr_t pads_ptr, links_ptr; int ret; memset(&links, 0, sizeof(links)); if (get_user(links.entity, &ulinks->entity) || get_user(pads_ptr, &ulinks->pads) || get_user(links_ptr, &ulinks->links)) return -EFAULT; links.pads = compat_ptr(pads_ptr); links.links = compat_ptr(links_ptr); ret = media_device_enum_links(mdev, &links); if (ret) return ret; if (copy_to_user(ulinks->reserved, links.reserved, sizeof(ulinks->reserved))) return -EFAULT; return 0; } #define MEDIA_IOC_ENUM_LINKS32 _IOWR('|', 0x02, struct media_links_enum32) static long media_device_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct media_devnode *devnode = media_devnode_data(filp); struct media_device *dev = devnode->media_dev; long ret; switch (cmd) { case MEDIA_IOC_ENUM_LINKS32: mutex_lock(&dev->graph_mutex); ret = media_device_enum_links32(dev, (struct media_links_enum32 __user *)arg); mutex_unlock(&dev->graph_mutex); break; default: return media_device_ioctl(filp, cmd, arg); } return ret; } #endif /* CONFIG_COMPAT */ static const struct media_file_operations media_device_fops = { .owner = THIS_MODULE, .open = media_device_open, .ioctl = media_device_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = media_device_compat_ioctl, #endif /* CONFIG_COMPAT */ .release = media_device_close, }; /* ----------------------------------------------------------------------------- * sysfs */ static ssize_t model_show(struct device *cd, struct device_attribute *attr, char *buf) { struct media_devnode *devnode = to_media_devnode(cd); struct media_device *mdev = devnode->media_dev; return sprintf(buf, "%.*s\n", (int)sizeof(mdev->model), mdev->model); } static DEVICE_ATTR_RO(model); /* ----------------------------------------------------------------------------- * Registration/unregistration */ static void media_device_release(struct media_devnode *devnode) { dev_dbg(devnode->parent, "Media device released\n"); } static void __media_device_unregister_entity(struct media_entity *entity) { struct media_device *mdev = entity->graph_obj.mdev; struct media_link *link, *tmp; struct media_interface *intf; struct media_pad *iter; ida_free(&mdev->entity_internal_idx, entity->internal_idx); /* Remove all interface links pointing to this entity */ list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) { list_for_each_entry_safe(link, tmp, &intf->links, list) { if (link->entity == entity) __media_remove_intf_link(link); } } /* Remove all data links that belong to this entity */ __media_entity_remove_links(entity); /* Remove all pads that belong to this entity */ media_entity_for_each_pad(entity, iter) media_gobj_destroy(&iter->graph_obj); /* Remove the entity */ media_gobj_destroy(&entity->graph_obj); /* invoke entity_notify callbacks to handle entity removal?? */ } int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity) { struct media_entity_notify *notify, *next; struct media_pad *iter; int ret; if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN || entity->function == MEDIA_ENT_F_UNKNOWN) dev_warn(mdev->dev, "Entity type for entity %s was not initialized!\n", entity->name); /* Warn if we apparently re-register an entity */ WARN_ON(entity->graph_obj.mdev != NULL); entity->graph_obj.mdev = mdev; INIT_LIST_HEAD(&entity->links); entity->num_links = 0; entity->num_backlinks = 0; ret = ida_alloc_min(&mdev->entity_internal_idx, 1, GFP_KERNEL); if (ret < 0) return ret; entity->internal_idx = ret; mutex_lock(&mdev->graph_mutex); mdev->entity_internal_idx_max = max(mdev->entity_internal_idx_max, entity->internal_idx); /* Initialize media_gobj embedded at the entity */ media_gobj_create(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); /* Initialize objects at the pads */ media_entity_for_each_pad(entity, iter) media_gobj_create(mdev, MEDIA_GRAPH_PAD, &iter->graph_obj); /* invoke entity_notify callbacks */ list_for_each_entry_safe(notify, next, &mdev->entity_notify, list) notify->notify(entity, notify->notify_data); if (mdev->entity_internal_idx_max >= mdev->pm_count_walk.ent_enum.idx_max) { struct media_graph new = { .top = 0 }; /* * Initialise the new graph walk before cleaning up * the old one in order not to spoil the graph walk * object of the media device if graph walk init fails. */ ret = media_graph_walk_init(&new, mdev); if (ret) { __media_device_unregister_entity(entity); mutex_unlock(&mdev->graph_mutex); return ret; } media_graph_walk_cleanup(&mdev->pm_count_walk); mdev->pm_count_walk = new; } mutex_unlock(&mdev->graph_mutex); return 0; } EXPORT_SYMBOL_GPL(media_device_register_entity); void media_device_unregister_entity(struct media_entity *entity) { struct media_device *mdev = entity->graph_obj.mdev; if (mdev == NULL) return; mutex_lock(&mdev->graph_mutex); __media_device_unregister_entity(entity); mutex_unlock(&mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_device_unregister_entity); void media_device_init(struct media_device *mdev) { INIT_LIST_HEAD(&mdev->entities); INIT_LIST_HEAD(&mdev->interfaces); INIT_LIST_HEAD(&mdev->pads); INIT_LIST_HEAD(&mdev->links); INIT_LIST_HEAD(&mdev->entity_notify); mutex_init(&mdev->req_queue_mutex); mutex_init(&mdev->graph_mutex); ida_init(&mdev->entity_internal_idx); atomic_set(&mdev->request_id, 0); if (!*mdev->bus_info) media_set_bus_info(mdev->bus_info, sizeof(mdev->bus_info), mdev->dev); dev_dbg(mdev->dev, "Media device initialized\n"); } EXPORT_SYMBOL_GPL(media_device_init); void media_device_cleanup(struct media_device *mdev) { ida_destroy(&mdev->entity_internal_idx); mdev->entity_internal_idx_max = 0; media_graph_walk_cleanup(&mdev->pm_count_walk); mutex_destroy(&mdev->graph_mutex); mutex_destroy(&mdev->req_queue_mutex); } EXPORT_SYMBOL_GPL(media_device_cleanup); int __must_check __media_device_register(struct media_device *mdev, struct module *owner) { struct media_devnode *devnode; int ret; devnode = kzalloc(sizeof(*devnode), GFP_KERNEL); if (!devnode) return -ENOMEM; /* Register the device node. */ mdev->devnode = devnode; devnode->fops = &media_device_fops; devnode->parent = mdev->dev; devnode->release = media_device_release; /* Set version 0 to indicate user-space that the graph is static */ mdev->topology_version = 0; ret = media_devnode_register(mdev, devnode, owner); if (ret < 0) { /* devnode free is handled in media_devnode_*() */ mdev->devnode = NULL; return ret; } ret = device_create_file(&devnode->dev, &dev_attr_model); if (ret < 0) { /* devnode free is handled in media_devnode_*() */ mdev->devnode = NULL; media_devnode_unregister_prepare(devnode); media_devnode_unregister(devnode); return ret; } dev_dbg(mdev->dev, "Media device registered\n"); return 0; } EXPORT_SYMBOL_GPL(__media_device_register); void media_device_register_entity_notify(struct media_device *mdev, struct media_entity_notify *nptr) { mutex_lock(&mdev->graph_mutex); list_add_tail(&nptr->list, &mdev->entity_notify); mutex_unlock(&mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_device_register_entity_notify); /* * Note: Should be called with mdev->lock held. */ static void __media_device_unregister_entity_notify(struct media_device *mdev, struct media_entity_notify *nptr) { list_del(&nptr->list); } void media_device_unregister_entity_notify(struct media_device *mdev, struct media_entity_notify *nptr) { mutex_lock(&mdev->graph_mutex); __media_device_unregister_entity_notify(mdev, nptr); mutex_unlock(&mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_device_unregister_entity_notify); void media_device_unregister(struct media_device *mdev) { struct media_entity *entity; struct media_entity *next; struct media_interface *intf, *tmp_intf; struct media_entity_notify *notify, *nextp; if (mdev == NULL) return; mutex_lock(&mdev->graph_mutex); /* Check if mdev was ever registered at all */ if (!media_devnode_is_registered(mdev->devnode)) { mutex_unlock(&mdev->graph_mutex); return; } /* Clear the devnode register bit to avoid races with media dev open */ media_devnode_unregister_prepare(mdev->devnode); /* Remove all entities from the media device */ list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) __media_device_unregister_entity(entity); /* Remove all entity_notify callbacks from the media device */ list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list) __media_device_unregister_entity_notify(mdev, notify); /* Remove all interfaces from the media device */ list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces, graph_obj.list) { /* * Unlink the interface, but don't free it here; the * module which created it is responsible for freeing * it */ __media_remove_intf_links(intf); media_gobj_destroy(&intf->graph_obj); } mutex_unlock(&mdev->graph_mutex); dev_dbg(mdev->dev, "Media device unregistered\n"); device_remove_file(&mdev->devnode->dev, &dev_attr_model); media_devnode_unregister(mdev->devnode); /* devnode free is handled in media_devnode_*() */ mdev->devnode = NULL; } EXPORT_SYMBOL_GPL(media_device_unregister); #if IS_ENABLED(CONFIG_PCI) void media_device_pci_init(struct media_device *mdev, struct pci_dev *pci_dev, const char *name) { mdev->dev = &pci_dev->dev; if (name) strscpy(mdev->model, name, sizeof(mdev->model)); else strscpy(mdev->model, pci_name(pci_dev), sizeof(mdev->model)); sprintf(mdev->bus_info, "PCI:%s", pci_name(pci_dev)); mdev->hw_revision = (pci_dev->subsystem_vendor << 16) | pci_dev->subsystem_device; media_device_init(mdev); } EXPORT_SYMBOL_GPL(media_device_pci_init); #endif #if IS_ENABLED(CONFIG_USB) void __media_device_usb_init(struct media_device *mdev, struct usb_device *udev, const char *board_name, const char *driver_name) { mdev->dev = &udev->dev; if (driver_name) strscpy(mdev->driver_name, driver_name, sizeof(mdev->driver_name)); if (board_name) strscpy(mdev->model, board_name, sizeof(mdev->model)); else if (udev->product) strscpy(mdev->model, udev->product, sizeof(mdev->model)); else strscpy(mdev->model, "unknown model", sizeof(mdev->model)); if (udev->serial) strscpy(mdev->serial, udev->serial, sizeof(mdev->serial)); usb_make_path(udev, mdev->bus_info, sizeof(mdev->bus_info)); mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); media_device_init(mdev); } EXPORT_SYMBOL_GPL(__media_device_usb_init); #endif #endif /* CONFIG_MEDIA_CONTROLLER */ |
| 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 | /* SPDX-License-Identifier: GPL-2.0-only */ /* * A policy database (policydb) specifies the * configuration data for the security policy. * * Author : Stephen Smalley, <stephen.smalley.work@gmail.com> */ /* * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com> * Support for enhanced MLS infrastructure. * Copyright (C) 2004-2005 Trusted Computer Solutions, Inc. * * Updated: Frank Mayer <mayerf@tresys.com> and * Karl MacMillan <kmacmillan@tresys.com> * Added conditional policy language extensions * Copyright (C) 2003-2004 Tresys Technology, LLC */ #ifndef _SS_POLICYDB_H_ #define _SS_POLICYDB_H_ #include "symtab.h" #include "avtab.h" #include "sidtab.h" #include "ebitmap.h" #include "mls_types.h" #include "context.h" #include "constraint.h" /* * A datum type is defined for each kind of symbol * in the configuration data: individual permissions, * common prefixes for access vectors, classes, * users, roles, types, sensitivities, categories, etc. */ /* Permission attributes */ struct perm_datum { u32 value; /* permission bit + 1 */ }; /* Attributes of a common prefix for access vectors */ struct common_datum { u32 value; /* internal common value */ struct symtab permissions; /* common permissions */ }; /* Class attributes */ struct class_datum { u32 value; /* class value */ char *comkey; /* common name */ struct common_datum *comdatum; /* common datum */ struct symtab permissions; /* class-specific permission symbol table */ struct constraint_node *constraints; /* constraints on class perms */ struct constraint_node *validatetrans; /* special transition rules */ /* Options how a new object user, role, and type should be decided */ #define DEFAULT_SOURCE 1 #define DEFAULT_TARGET 2 char default_user; char default_role; char default_type; /* Options how a new object range should be decided */ #define DEFAULT_SOURCE_LOW 1 #define DEFAULT_SOURCE_HIGH 2 #define DEFAULT_SOURCE_LOW_HIGH 3 #define DEFAULT_TARGET_LOW 4 #define DEFAULT_TARGET_HIGH 5 #define DEFAULT_TARGET_LOW_HIGH 6 #define DEFAULT_GLBLUB 7 char default_range; }; /* Role attributes */ struct role_datum { u32 value; /* internal role value */ u32 bounds; /* boundary of role */ struct ebitmap dominates; /* set of roles dominated by this role */ struct ebitmap types; /* set of authorized types for role */ }; struct role_trans_key { u32 role; /* current role */ u32 type; /* program executable type, or new object type */ u32 tclass; /* process class, or new object class */ }; struct role_trans_datum { u32 new_role; /* new role */ }; struct filename_trans_key { u32 ttype; /* parent dir context */ u16 tclass; /* class of new object */ const char *name; /* last path component */ }; struct filename_trans_datum { struct ebitmap stypes; /* bitmap of source types for this otype */ u32 otype; /* resulting type of new object */ struct filename_trans_datum *next; /* record for next otype*/ }; struct role_allow { u32 role; /* current role */ u32 new_role; /* new role */ struct role_allow *next; }; /* Type attributes */ struct type_datum { u32 value; /* internal type value */ u32 bounds; /* boundary of type */ unsigned char primary; /* primary name? */ unsigned char attribute; /* attribute ?*/ }; /* User attributes */ struct user_datum { u32 value; /* internal user value */ u32 bounds; /* bounds of user */ struct ebitmap roles; /* set of authorized roles for user */ struct mls_range range; /* MLS range (min - max) for user */ struct mls_level dfltlevel; /* default login MLS level for user */ }; /* Sensitivity attributes */ struct level_datum { struct mls_level level; /* sensitivity and associated categories */ unsigned char isalias; /* is this sensitivity an alias for another? */ }; /* Category attributes */ struct cat_datum { u32 value; /* internal category bit + 1 */ unsigned char isalias; /* is this category an alias for another? */ }; struct range_trans { u32 source_type; u32 target_type; u32 target_class; }; /* Boolean data type */ struct cond_bool_datum { u32 value; /* internal type value */ int state; }; struct cond_node; /* * type set preserves data needed to determine constraint info from * policy source. This is not used by the kernel policy but allows * utilities such as audit2allow to determine constraint denials. */ struct type_set { struct ebitmap types; struct ebitmap negset; u32 flags; }; /* * The configuration data includes security contexts for * initial SIDs, unlabeled file systems, TCP and UDP port numbers, * network interfaces, and nodes. This structure stores the * relevant data for one such entry. Entries of the same kind * (e.g. all initial SIDs) are linked together into a list. */ struct ocontext { union { char *name; /* name of initial SID, fs, netif, fstype, path */ struct { u8 protocol; u16 low_port; u16 high_port; } port; /* TCP or UDP port information */ struct { u32 addr; u32 mask; } node; /* node information */ struct { u32 addr[4]; u32 mask[4]; } node6; /* IPv6 node information */ struct { u64 subnet_prefix; u16 low_pkey; u16 high_pkey; } ibpkey; struct { char *dev_name; u8 port; } ibendport; } u; union { u32 sclass; /* security class for genfs */ u32 behavior; /* labeling behavior for fs_use */ } v; struct context context[2]; /* security context(s) */ u32 sid[2]; /* SID(s) */ struct ocontext *next; }; struct genfs { char *fstype; struct ocontext *head; struct genfs *next; }; /* symbol table array indices */ #define SYM_COMMONS 0 #define SYM_CLASSES 1 #define SYM_ROLES 2 #define SYM_TYPES 3 #define SYM_USERS 4 #define SYM_BOOLS 5 #define SYM_LEVELS 6 #define SYM_CATS 7 #define SYM_NUM 8 /* object context array indices */ #define OCON_ISID 0 /* initial SIDs */ #define OCON_FS 1 /* unlabeled file systems (deprecated) */ #define OCON_PORT 2 /* TCP and UDP port numbers */ #define OCON_NETIF 3 /* network interfaces */ #define OCON_NODE 4 /* nodes */ #define OCON_FSUSE 5 /* fs_use */ #define OCON_NODE6 6 /* IPv6 nodes */ #define OCON_IBPKEY 7 /* Infiniband PKeys */ #define OCON_IBENDPORT 8 /* Infiniband end ports */ #define OCON_NUM 9 /* The policy database */ struct policydb { int mls_enabled; /* symbol tables */ struct symtab symtab[SYM_NUM]; #define p_commons symtab[SYM_COMMONS] #define p_classes symtab[SYM_CLASSES] #define p_roles symtab[SYM_ROLES] #define p_types symtab[SYM_TYPES] #define p_users symtab[SYM_USERS] #define p_bools symtab[SYM_BOOLS] #define p_levels symtab[SYM_LEVELS] #define p_cats symtab[SYM_CATS] /* symbol names indexed by (value - 1) */ char **sym_val_to_name[SYM_NUM]; /* class, role, and user attributes indexed by (value - 1) */ struct class_datum **class_val_to_struct; struct role_datum **role_val_to_struct; struct user_datum **user_val_to_struct; struct type_datum **type_val_to_struct; /* type enforcement access vectors and transitions */ struct avtab te_avtab; /* role transitions */ struct hashtab role_tr; /* file transitions with the last path component */ /* quickly exclude lookups when parent ttype has no rules */ struct ebitmap filename_trans_ttypes; /* actual set of filename_trans rules */ struct hashtab filename_trans; /* only used if policyvers < POLICYDB_VERSION_COMP_FTRANS */ u32 compat_filename_trans_count; /* bools indexed by (value - 1) */ struct cond_bool_datum **bool_val_to_struct; /* type enforcement conditional access vectors and transitions */ struct avtab te_cond_avtab; /* array indexing te_cond_avtab by conditional */ struct cond_node *cond_list; u32 cond_list_len; /* role allows */ struct role_allow *role_allow; /* security contexts of initial SIDs, unlabeled file systems, TCP or UDP port numbers, network interfaces and nodes */ struct ocontext *ocontexts[OCON_NUM]; /* security contexts for files in filesystems that cannot support a persistent label mapping or use another fixed labeling behavior. */ struct genfs *genfs; /* range transitions table (range_trans_key -> mls_range) */ struct hashtab range_tr; /* type -> attribute reverse mapping */ struct ebitmap *type_attr_map_array; struct ebitmap policycaps; struct ebitmap permissive_map; /* length of this policy when it was loaded */ size_t len; unsigned int policyvers; unsigned int reject_unknown : 1; unsigned int allow_unknown : 1; u16 process_class; u32 process_trans_perms; } __randomize_layout; struct policy_file { char *data; size_t len; }; extern void policydb_destroy(struct policydb *p); extern int policydb_load_isids(struct policydb *p, struct sidtab *s); extern int policydb_context_isvalid(struct policydb *p, struct context *c); extern int policydb_class_isvalid(struct policydb *p, unsigned int class); extern int policydb_type_isvalid(struct policydb *p, unsigned int type); extern int policydb_role_isvalid(struct policydb *p, unsigned int role); extern int policydb_read(struct policydb *p, struct policy_file *fp); extern int policydb_write(struct policydb *p, struct policy_file *fp); extern struct filename_trans_datum * policydb_filenametr_search(struct policydb *p, struct filename_trans_key *key); extern struct mls_range *policydb_rangetr_search(struct policydb *p, struct range_trans *key); extern struct role_trans_datum * policydb_roletr_search(struct policydb *p, struct role_trans_key *key); #define POLICYDB_CONFIG_MLS 1 /* the config flags related to unknown classes/perms are bits 2 and 3 */ #define REJECT_UNKNOWN 0x00000002 #define ALLOW_UNKNOWN 0x00000004 #define OBJECT_R "object_r" #define OBJECT_R_VAL 1 #define POLICYDB_MAGIC SELINUX_MAGIC #define POLICYDB_STRING "SE Linux" struct policy_data { struct policydb *p; struct policy_file *fp; }; static inline int next_entry(void *buf, struct policy_file *fp, size_t bytes) { if (bytes > fp->len) return -EINVAL; memcpy(buf, fp->data, bytes); fp->data += bytes; fp->len -= bytes; return 0; } static inline int put_entry(const void *buf, size_t bytes, size_t num, struct policy_file *fp) { size_t len; if (unlikely(check_mul_overflow(bytes, num, &len))) return -EINVAL; if (len > fp->len) return -EINVAL; memcpy(fp->data, buf, len); fp->data += len; fp->len -= len; return 0; } static inline char *sym_name(struct policydb *p, unsigned int sym_num, unsigned int element_nr) { return p->sym_val_to_name[sym_num][element_nr]; } extern int str_read(char **strp, gfp_t flags, struct policy_file *fp, u32 len); extern u16 string_to_security_class(struct policydb *p, const char *name); extern u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name); #endif /* _SS_POLICYDB_H_ */ |
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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 | // SPDX-License-Identifier: GPL-2.0+ /* * Driver for USB Mass Storage compliant devices * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * * Developed with the assistance of: * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) * (c) 2000 Stephen J. Gowdy (SGowdy@lbl.gov) * (c) 2002 Alan Stern <stern@rowland.org> * * Initial work by: * (c) 1999 Michael Gee (michael@linuxspecific.com) * * This driver is based on the 'USB Mass Storage Class' document. This * describes in detail the protocol used to communicate with such * devices. Clearly, the designers had SCSI and ATAPI commands in * mind when they created this document. The commands are all very * similar to commands in the SCSI-II and ATAPI specifications. * * It is important to note that in a number of cases this class * exhibits class-specific exemptions from the USB specification. * Notably the usage of NAK, STALL and ACK differs from the norm, in * that they are used to communicate wait, failed and OK on commands. * * Also, for certain devices, the interrupt endpoint is used to convey * status of a command. */ #include <linux/sched.h> #include <linux/gfp.h> #include <linux/errno.h> #include <linux/export.h> #include <linux/usb/quirks.h> #include <scsi/scsi.h> #include <scsi/scsi_eh.h> #include <scsi/scsi_device.h> #include "usb.h" #include "transport.h" #include "protocol.h" #include "scsiglue.h" #include "debug.h" #include <linux/blkdev.h> #include "../../scsi/sd.h" /*********************************************************************** * Data transfer routines ***********************************************************************/ /* * This is subtle, so pay attention: * --------------------------------- * We're very concerned about races with a command abort. Hanging this code * is a sure fire way to hang the kernel. (Note that this discussion applies * only to transactions resulting from a scsi queued-command, since only * these transactions are subject to a scsi abort. Other transactions, such * as those occurring during device-specific initialization, must be handled * by a separate code path.) * * The abort function (usb_storage_command_abort() in scsiglue.c) first * sets the machine state and the ABORTING bit in us->dflags to prevent * new URBs from being submitted. It then calls usb_stor_stop_transport() * below, which atomically tests-and-clears the URB_ACTIVE bit in us->dflags * to see if the current_urb needs to be stopped. Likewise, the SG_ACTIVE * bit is tested to see if the current_sg scatter-gather request needs to be * stopped. The timeout callback routine does much the same thing. * * When a disconnect occurs, the DISCONNECTING bit in us->dflags is set to * prevent new URBs from being submitted, and usb_stor_stop_transport() is * called to stop any ongoing requests. * * The submit function first verifies that the submitting is allowed * (neither ABORTING nor DISCONNECTING bits are set) and that the submit * completes without errors, and only then sets the URB_ACTIVE bit. This * prevents the stop_transport() function from trying to cancel the URB * while the submit call is underway. Next, the submit function must test * the flags to see if an abort or disconnect occurred during the submission * or before the URB_ACTIVE bit was set. If so, it's essential to cancel * the URB if it hasn't been cancelled already (i.e., if the URB_ACTIVE bit * is still set). Either way, the function must then wait for the URB to * finish. Note that the URB can still be in progress even after a call to * usb_unlink_urb() returns. * * The idea is that (1) once the ABORTING or DISCONNECTING bit is set, * either the stop_transport() function or the submitting function * is guaranteed to call usb_unlink_urb() for an active URB, * and (2) test_and_clear_bit() prevents usb_unlink_urb() from being * called more than once or from being called during usb_submit_urb(). */ /* * This is the completion handler which will wake us up when an URB * completes. */ static void usb_stor_blocking_completion(struct urb *urb) { struct completion *urb_done_ptr = urb->context; complete(urb_done_ptr); } /* * This is the common part of the URB message submission code * * All URBs from the usb-storage driver involved in handling a queued scsi * command _must_ pass through this function (or something like it) for the * abort mechanisms to work properly. */ static int usb_stor_msg_common(struct us_data *us, int timeout) { struct completion urb_done; long timeleft; int status; /* don't submit URBs during abort processing */ if (test_bit(US_FLIDX_ABORTING, &us->dflags)) return -EIO; /* set up data structures for the wakeup system */ init_completion(&urb_done); /* fill the common fields in the URB */ us->current_urb->context = &urb_done; us->current_urb->transfer_flags = 0; /* * we assume that if transfer_buffer isn't us->iobuf then it * hasn't been mapped for DMA. Yes, this is clunky, but it's * easier than always having the caller tell us whether the * transfer buffer has already been mapped. */ if (us->current_urb->transfer_buffer == us->iobuf) us->current_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; us->current_urb->transfer_dma = us->iobuf_dma; /* submit the URB */ status = usb_submit_urb(us->current_urb, GFP_NOIO); if (status) { /* something went wrong */ return status; } /* * since the URB has been submitted successfully, it's now okay * to cancel it */ set_bit(US_FLIDX_URB_ACTIVE, &us->dflags); /* did an abort occur during the submission? */ if (test_bit(US_FLIDX_ABORTING, &us->dflags)) { /* cancel the URB, if it hasn't been cancelled already */ if (test_and_clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags)) { usb_stor_dbg(us, "-- cancelling URB\n"); usb_unlink_urb(us->current_urb); } } /* wait for the completion of the URB */ timeleft = wait_for_completion_interruptible_timeout( &urb_done, timeout ? : MAX_SCHEDULE_TIMEOUT); clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags); if (timeleft <= 0) { usb_stor_dbg(us, "%s -- cancelling URB\n", timeleft == 0 ? "Timeout" : "Signal"); usb_kill_urb(us->current_urb); } /* return the URB status */ return us->current_urb->status; } /* * Transfer one control message, with timeouts, and allowing early * termination. Return codes are usual -Exxx, *not* USB_STOR_XFER_xxx. */ int usb_stor_control_msg(struct us_data *us, unsigned int pipe, u8 request, u8 requesttype, u16 value, u16 index, void *data, u16 size, int timeout) { int status; usb_stor_dbg(us, "rq=%02x rqtype=%02x value=%04x index=%02x len=%u\n", request, requesttype, value, index, size); /* fill in the devrequest structure */ us->cr->bRequestType = requesttype; us->cr->bRequest = request; us->cr->wValue = cpu_to_le16(value); us->cr->wIndex = cpu_to_le16(index); us->cr->wLength = cpu_to_le16(size); /* fill and submit the URB */ usb_fill_control_urb(us->current_urb, us->pusb_dev, pipe, (unsigned char*) us->cr, data, size, usb_stor_blocking_completion, NULL); status = usb_stor_msg_common(us, timeout); /* return the actual length of the data transferred if no error */ if (status == 0) status = us->current_urb->actual_length; return status; } EXPORT_SYMBOL_GPL(usb_stor_control_msg); /* * This is a version of usb_clear_halt() that allows early termination and * doesn't read the status from the device -- this is because some devices * crash their internal firmware when the status is requested after a halt. * * A definitive list of these 'bad' devices is too difficult to maintain or * make complete enough to be useful. This problem was first observed on the * Hagiwara FlashGate DUAL unit. However, bus traces reveal that neither * MacOS nor Windows checks the status after clearing a halt. * * Since many vendors in this space limit their testing to interoperability * with these two OSes, specification violations like this one are common. */ int usb_stor_clear_halt(struct us_data *us, unsigned int pipe) { int result; int endp = usb_pipeendpoint(pipe); if (usb_pipein (pipe)) endp |= USB_DIR_IN; result = usb_stor_control_msg(us, us->send_ctrl_pipe, USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, USB_ENDPOINT_HALT, endp, NULL, 0, 3*HZ); if (result >= 0) usb_reset_endpoint(us->pusb_dev, endp); usb_stor_dbg(us, "result = %d\n", result); return result; } EXPORT_SYMBOL_GPL(usb_stor_clear_halt); /* * Interpret the results of a URB transfer * * This function prints appropriate debugging messages, clears halts on * non-control endpoints, and translates the status to the corresponding * USB_STOR_XFER_xxx return code. */ static int interpret_urb_result(struct us_data *us, unsigned int pipe, unsigned int length, int result, unsigned int partial) { usb_stor_dbg(us, "Status code %d; transferred %u/%u\n", result, partial, length); switch (result) { /* no error code; did we send all the data? */ case 0: if (partial != length) { usb_stor_dbg(us, "-- short transfer\n"); return USB_STOR_XFER_SHORT; } usb_stor_dbg(us, "-- transfer complete\n"); return USB_STOR_XFER_GOOD; /* stalled */ case -EPIPE: /* * for control endpoints, (used by CB[I]) a stall indicates * a failed command */ if (usb_pipecontrol(pipe)) { usb_stor_dbg(us, "-- stall on control pipe\n"); return USB_STOR_XFER_STALLED; } /* for other sorts of endpoint, clear the stall */ usb_stor_dbg(us, "clearing endpoint halt for pipe 0x%x\n", pipe); if (usb_stor_clear_halt(us, pipe) < 0) return USB_STOR_XFER_ERROR; return USB_STOR_XFER_STALLED; /* babble - the device tried to send more than we wanted to read */ case -EOVERFLOW: usb_stor_dbg(us, "-- babble\n"); return USB_STOR_XFER_LONG; /* the transfer was cancelled by abort, disconnect, or timeout */ case -ECONNRESET: usb_stor_dbg(us, "-- transfer cancelled\n"); return USB_STOR_XFER_ERROR; /* short scatter-gather read transfer */ case -EREMOTEIO: usb_stor_dbg(us, "-- short read transfer\n"); return USB_STOR_XFER_SHORT; /* abort or disconnect in progress */ case -EIO: usb_stor_dbg(us, "-- abort or disconnect in progress\n"); return USB_STOR_XFER_ERROR; /* the catch-all error case */ default: usb_stor_dbg(us, "-- unknown error\n"); return USB_STOR_XFER_ERROR; } } /* * Transfer one control message, without timeouts, but allowing early * termination. Return codes are USB_STOR_XFER_xxx. */ int usb_stor_ctrl_transfer(struct us_data *us, unsigned int pipe, u8 request, u8 requesttype, u16 value, u16 index, void *data, u16 size) { int result; usb_stor_dbg(us, "rq=%02x rqtype=%02x value=%04x index=%02x len=%u\n", request, requesttype, value, index, size); /* fill in the devrequest structure */ us->cr->bRequestType = requesttype; us->cr->bRequest = request; us->cr->wValue = cpu_to_le16(value); us->cr->wIndex = cpu_to_le16(index); us->cr->wLength = cpu_to_le16(size); /* fill and submit the URB */ usb_fill_control_urb(us->current_urb, us->pusb_dev, pipe, (unsigned char*) us->cr, data, size, usb_stor_blocking_completion, NULL); result = usb_stor_msg_common(us, 0); return interpret_urb_result(us, pipe, size, result, us->current_urb->actual_length); } EXPORT_SYMBOL_GPL(usb_stor_ctrl_transfer); /* * Receive one interrupt buffer, without timeouts, but allowing early * termination. Return codes are USB_STOR_XFER_xxx. * * This routine always uses us->recv_intr_pipe as the pipe and * us->ep_bInterval as the interrupt interval. */ static int usb_stor_intr_transfer(struct us_data *us, void *buf, unsigned int length) { int result; unsigned int pipe = us->recv_intr_pipe; unsigned int maxp; usb_stor_dbg(us, "xfer %u bytes\n", length); /* calculate the max packet size */ maxp = usb_maxpacket(us->pusb_dev, pipe); if (maxp > length) maxp = length; /* fill and submit the URB */ usb_fill_int_urb(us->current_urb, us->pusb_dev, pipe, buf, maxp, usb_stor_blocking_completion, NULL, us->ep_bInterval); result = usb_stor_msg_common(us, 0); return interpret_urb_result(us, pipe, length, result, us->current_urb->actual_length); } /* * Transfer one buffer via bulk pipe, without timeouts, but allowing early * termination. Return codes are USB_STOR_XFER_xxx. If the bulk pipe * stalls during the transfer, the halt is automatically cleared. */ int usb_stor_bulk_transfer_buf(struct us_data *us, unsigned int pipe, void *buf, unsigned int length, unsigned int *act_len) { int result; usb_stor_dbg(us, "xfer %u bytes\n", length); /* fill and submit the URB */ usb_fill_bulk_urb(us->current_urb, us->pusb_dev, pipe, buf, length, usb_stor_blocking_completion, NULL); result = usb_stor_msg_common(us, 0); /* store the actual length of the data transferred */ if (act_len) *act_len = us->current_urb->actual_length; return interpret_urb_result(us, pipe, length, result, us->current_urb->actual_length); } EXPORT_SYMBOL_GPL(usb_stor_bulk_transfer_buf); /* * Transfer a scatter-gather list via bulk transfer * * This function does basically the same thing as usb_stor_bulk_transfer_buf() * above, but it uses the usbcore scatter-gather library. */ static int usb_stor_bulk_transfer_sglist(struct us_data *us, unsigned int pipe, struct scatterlist *sg, int num_sg, unsigned int length, unsigned int *act_len) { int result; /* don't submit s-g requests during abort processing */ if (test_bit(US_FLIDX_ABORTING, &us->dflags)) goto usb_stor_xfer_error; /* initialize the scatter-gather request block */ usb_stor_dbg(us, "xfer %u bytes, %d entries\n", length, num_sg); result = usb_sg_init(&us->current_sg, us->pusb_dev, pipe, 0, sg, num_sg, length, GFP_NOIO); if (result) { usb_stor_dbg(us, "usb_sg_init returned %d\n", result); goto usb_stor_xfer_error; } /* * since the block has been initialized successfully, it's now * okay to cancel it */ set_bit(US_FLIDX_SG_ACTIVE, &us->dflags); /* did an abort occur during the submission? */ if (test_bit(US_FLIDX_ABORTING, &us->dflags)) { /* cancel the request, if it hasn't been cancelled already */ if (test_and_clear_bit(US_FLIDX_SG_ACTIVE, &us->dflags)) { usb_stor_dbg(us, "-- cancelling sg request\n"); usb_sg_cancel(&us->current_sg); } } /* wait for the completion of the transfer */ usb_sg_wait(&us->current_sg); clear_bit(US_FLIDX_SG_ACTIVE, &us->dflags); result = us->current_sg.status; if (act_len) *act_len = us->current_sg.bytes; return interpret_urb_result(us, pipe, length, result, us->current_sg.bytes); usb_stor_xfer_error: if (act_len) *act_len = 0; return USB_STOR_XFER_ERROR; } /* * Common used function. Transfer a complete command * via usb_stor_bulk_transfer_sglist() above. Set cmnd resid */ int usb_stor_bulk_srb(struct us_data* us, unsigned int pipe, struct scsi_cmnd* srb) { unsigned int partial; int result = usb_stor_bulk_transfer_sglist(us, pipe, scsi_sglist(srb), scsi_sg_count(srb), scsi_bufflen(srb), &partial); scsi_set_resid(srb, scsi_bufflen(srb) - partial); return result; } EXPORT_SYMBOL_GPL(usb_stor_bulk_srb); /* * Transfer an entire SCSI command's worth of data payload over the bulk * pipe. * * Note that this uses usb_stor_bulk_transfer_buf() and * usb_stor_bulk_transfer_sglist() to achieve its goals -- * this function simply determines whether we're going to use * scatter-gather or not, and acts appropriately. */ int usb_stor_bulk_transfer_sg(struct us_data* us, unsigned int pipe, void *buf, unsigned int length_left, int use_sg, int *residual) { int result; unsigned int partial; /* are we scatter-gathering? */ if (use_sg) { /* use the usb core scatter-gather primitives */ result = usb_stor_bulk_transfer_sglist(us, pipe, (struct scatterlist *) buf, use_sg, length_left, &partial); length_left -= partial; } else { /* no scatter-gather, just make the request */ result = usb_stor_bulk_transfer_buf(us, pipe, buf, length_left, &partial); length_left -= partial; } /* store the residual and return the error code */ if (residual) *residual = length_left; return result; } EXPORT_SYMBOL_GPL(usb_stor_bulk_transfer_sg); /*********************************************************************** * Transport routines ***********************************************************************/ /* * There are so many devices that report the capacity incorrectly, * this routine was written to counteract some of the resulting * problems. */ static void last_sector_hacks(struct us_data *us, struct scsi_cmnd *srb) { struct gendisk *disk; struct scsi_disk *sdkp; u32 sector; /* To Report "Medium Error: Record Not Found */ static const unsigned char record_not_found[18] = { [0] = 0x70, /* current error */ [2] = MEDIUM_ERROR, /* = 0x03 */ [7] = 0x0a, /* additional length */ [12] = 0x14 /* Record Not Found */ }; /* * If last-sector problems can't occur, whether because the * capacity was already decremented or because the device is * known to report the correct capacity, then we don't need * to do anything. */ if (!us->use_last_sector_hacks) return; /* Was this command a READ(10) or a WRITE(10)? */ if (srb->cmnd[0] != READ_10 && srb->cmnd[0] != WRITE_10) goto done; /* Did this command access the last sector? */ sector = (srb->cmnd[2] << 24) | (srb->cmnd[3] << 16) | (srb->cmnd[4] << 8) | (srb->cmnd[5]); disk = scsi_cmd_to_rq(srb)->q->disk; if (!disk) goto done; sdkp = scsi_disk(disk); if (!sdkp) goto done; if (sector + 1 != sdkp->capacity) goto done; if (srb->result == SAM_STAT_GOOD && scsi_get_resid(srb) == 0) { /* * The command succeeded. We know this device doesn't * have the last-sector bug, so stop checking it. */ us->use_last_sector_hacks = 0; } else { /* * The command failed. Allow up to 3 retries in case this * is some normal sort of failure. After that, assume the * capacity is wrong and we're trying to access the sector * beyond the end. Replace the result code and sense data * with values that will cause the SCSI core to fail the * command immediately, instead of going into an infinite * (or even just a very long) retry loop. */ if (++us->last_sector_retries < 3) return; srb->result = SAM_STAT_CHECK_CONDITION; memcpy(srb->sense_buffer, record_not_found, sizeof(record_not_found)); } done: /* * Don't reset the retry counter for TEST UNIT READY commands, * because they get issued after device resets which might be * caused by a failed last-sector access. */ if (srb->cmnd[0] != TEST_UNIT_READY) us->last_sector_retries = 0; } /* * Invoke the transport and basic error-handling/recovery methods * * This is used by the protocol layers to actually send the message to * the device and receive the response. */ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) { int need_auto_sense; int result; /* send the command to the transport layer */ scsi_set_resid(srb, 0); result = us->transport(srb, us); /* * if the command gets aborted by the higher layers, we need to * short-circuit all other processing */ if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { usb_stor_dbg(us, "-- command was aborted\n"); srb->result = DID_ABORT << 16; goto Handle_Errors; } /* if there is a transport error, reset and don't auto-sense */ if (result == USB_STOR_TRANSPORT_ERROR) { usb_stor_dbg(us, "-- transport indicates error, resetting\n"); srb->result = DID_ERROR << 16; goto Handle_Errors; } /* if the transport provided its own sense data, don't auto-sense */ if (result == USB_STOR_TRANSPORT_NO_SENSE) { srb->result = SAM_STAT_CHECK_CONDITION; last_sector_hacks(us, srb); return; } srb->result = SAM_STAT_GOOD; /* * Determine if we need to auto-sense * * I normally don't use a flag like this, but it's almost impossible * to understand what's going on here if I don't. */ need_auto_sense = 0; /* * If we're running the CB transport, which is incapable * of determining status on its own, we will auto-sense * unless the operation involved a data-in transfer. Devices * can signal most data-in errors by stalling the bulk-in pipe. */ if ((us->protocol == USB_PR_CB || us->protocol == USB_PR_DPCM_USB) && srb->sc_data_direction != DMA_FROM_DEVICE) { usb_stor_dbg(us, "-- CB transport device requiring auto-sense\n"); need_auto_sense = 1; } /* Some devices (Kindle) require another command after SYNC CACHE */ if ((us->fflags & US_FL_SENSE_AFTER_SYNC) && srb->cmnd[0] == SYNCHRONIZE_CACHE) { usb_stor_dbg(us, "-- sense after SYNC CACHE\n"); need_auto_sense = 1; } /* * If we have a failure, we're going to do a REQUEST_SENSE * automatically. Note that we differentiate between a command * "failure" and an "error" in the transport mechanism. */ if (result == USB_STOR_TRANSPORT_FAILED) { usb_stor_dbg(us, "-- transport indicates command failure\n"); need_auto_sense = 1; } /* * Determine if this device is SAT by seeing if the * command executed successfully. Otherwise we'll have * to wait for at least one CHECK_CONDITION to determine * SANE_SENSE support */ if (unlikely((srb->cmnd[0] == ATA_16 || srb->cmnd[0] == ATA_12) && result == USB_STOR_TRANSPORT_GOOD && !(us->fflags & US_FL_SANE_SENSE) && !(us->fflags & US_FL_BAD_SENSE) && !(srb->cmnd[2] & 0x20))) { usb_stor_dbg(us, "-- SAT supported, increasing auto-sense\n"); us->fflags |= US_FL_SANE_SENSE; } /* * A short transfer on a command where we don't expect it * is unusual, but it doesn't mean we need to auto-sense. */ if ((scsi_get_resid(srb) > 0) && !((srb->cmnd[0] == REQUEST_SENSE) || (srb->cmnd[0] == INQUIRY) || (srb->cmnd[0] == MODE_SENSE) || (srb->cmnd[0] == LOG_SENSE) || (srb->cmnd[0] == MODE_SENSE_10))) { usb_stor_dbg(us, "-- unexpectedly short transfer\n"); } /* Now, if we need to do the auto-sense, let's do it */ if (need_auto_sense) { int temp_result; struct scsi_eh_save ses; int sense_size = US_SENSE_SIZE; struct scsi_sense_hdr sshdr; const u8 *scdd; u8 fm_ili; /* device supports and needs bigger sense buffer */ if (us->fflags & US_FL_SANE_SENSE) sense_size = ~0; Retry_Sense: usb_stor_dbg(us, "Issuing auto-REQUEST_SENSE\n"); scsi_eh_prep_cmnd(srb, &ses, NULL, 0, sense_size); /* FIXME: we must do the protocol translation here */ if (us->subclass == USB_SC_RBC || us->subclass == USB_SC_SCSI || us->subclass == USB_SC_CYP_ATACB) srb->cmd_len = 6; else srb->cmd_len = 12; /* issue the auto-sense command */ scsi_set_resid(srb, 0); temp_result = us->transport(us->srb, us); /* let's clean up right away */ scsi_eh_restore_cmnd(srb, &ses); if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { usb_stor_dbg(us, "-- auto-sense aborted\n"); srb->result = DID_ABORT << 16; /* If SANE_SENSE caused this problem, disable it */ if (sense_size != US_SENSE_SIZE) { us->fflags &= ~US_FL_SANE_SENSE; us->fflags |= US_FL_BAD_SENSE; } goto Handle_Errors; } /* * Some devices claim to support larger sense but fail when * trying to request it. When a transport failure happens * using US_FS_SANE_SENSE, we always retry with a standard * (small) sense request. This fixes some USB GSM modems */ if (temp_result == USB_STOR_TRANSPORT_FAILED && sense_size != US_SENSE_SIZE) { usb_stor_dbg(us, "-- auto-sense failure, retry small sense\n"); sense_size = US_SENSE_SIZE; us->fflags &= ~US_FL_SANE_SENSE; us->fflags |= US_FL_BAD_SENSE; goto Retry_Sense; } /* Other failures */ if (temp_result != USB_STOR_TRANSPORT_GOOD) { usb_stor_dbg(us, "-- auto-sense failure\n"); /* * we skip the reset if this happens to be a * multi-target device, since failure of an * auto-sense is perfectly valid */ srb->result = DID_ERROR << 16; if (!(us->fflags & US_FL_SCM_MULT_TARG)) goto Handle_Errors; return; } /* * If the sense data returned is larger than 18-bytes then we * assume this device supports requesting more in the future. * The response code must be 70h through 73h inclusive. */ if (srb->sense_buffer[7] > (US_SENSE_SIZE - 8) && !(us->fflags & US_FL_SANE_SENSE) && !(us->fflags & US_FL_BAD_SENSE) && (srb->sense_buffer[0] & 0x7C) == 0x70) { usb_stor_dbg(us, "-- SANE_SENSE support enabled\n"); us->fflags |= US_FL_SANE_SENSE; /* * Indicate to the user that we truncated their sense * because we didn't know it supported larger sense. */ usb_stor_dbg(us, "-- Sense data truncated to %i from %i\n", US_SENSE_SIZE, srb->sense_buffer[7] + 8); srb->sense_buffer[7] = (US_SENSE_SIZE - 8); } scsi_normalize_sense(srb->sense_buffer, SCSI_SENSE_BUFFERSIZE, &sshdr); usb_stor_dbg(us, "-- Result from auto-sense is %d\n", temp_result); usb_stor_dbg(us, "-- code: 0x%x, key: 0x%x, ASC: 0x%x, ASCQ: 0x%x\n", sshdr.response_code, sshdr.sense_key, sshdr.asc, sshdr.ascq); #ifdef CONFIG_USB_STORAGE_DEBUG usb_stor_show_sense(us, sshdr.sense_key, sshdr.asc, sshdr.ascq); #endif /* set the result so the higher layers expect this data */ srb->result = SAM_STAT_CHECK_CONDITION; scdd = scsi_sense_desc_find(srb->sense_buffer, SCSI_SENSE_BUFFERSIZE, 4); fm_ili = (scdd ? scdd[3] : srb->sense_buffer[2]) & 0xA0; /* * We often get empty sense data. This could indicate that * everything worked or that there was an unspecified * problem. We have to decide which. */ if (sshdr.sense_key == 0 && sshdr.asc == 0 && sshdr.ascq == 0 && fm_ili == 0) { /* * If things are really okay, then let's show that. * Zero out the sense buffer so the higher layers * won't realize we did an unsolicited auto-sense. */ if (result == USB_STOR_TRANSPORT_GOOD) { srb->result = SAM_STAT_GOOD; srb->sense_buffer[0] = 0x0; } /* * ATA-passthru commands use sense data to report * the command completion status, and often devices * return Check Condition status when nothing is * wrong. */ else if (srb->cmnd[0] == ATA_16 || srb->cmnd[0] == ATA_12) { /* leave the data alone */ } /* * If there was a problem, report an unspecified * hardware error to prevent the higher layers from * entering an infinite retry loop. */ else { srb->result = DID_ERROR << 16; if ((sshdr.response_code & 0x72) == 0x72) srb->sense_buffer[1] = HARDWARE_ERROR; else srb->sense_buffer[2] = HARDWARE_ERROR; } } } /* * Some devices don't work or return incorrect data the first * time they get a READ(10) command, or for the first READ(10) * after a media change. If the INITIAL_READ10 flag is set, * keep track of whether READ(10) commands succeed. If the * previous one succeeded and this one failed, set the REDO_READ10 * flag to force a retry. */ if (unlikely((us->fflags & US_FL_INITIAL_READ10) && srb->cmnd[0] == READ_10)) { if (srb->result == SAM_STAT_GOOD) { set_bit(US_FLIDX_READ10_WORKED, &us->dflags); } else if (test_bit(US_FLIDX_READ10_WORKED, &us->dflags)) { clear_bit(US_FLIDX_READ10_WORKED, &us->dflags); set_bit(US_FLIDX_REDO_READ10, &us->dflags); } /* * Next, if the REDO_READ10 flag is set, return a result * code that will cause the SCSI core to retry the READ(10) * command immediately. */ if (test_bit(US_FLIDX_REDO_READ10, &us->dflags)) { clear_bit(US_FLIDX_REDO_READ10, &us->dflags); srb->result = DID_IMM_RETRY << 16; srb->sense_buffer[0] = 0; } } /* Did we transfer less than the minimum amount required? */ if ((srb->result == SAM_STAT_GOOD || srb->sense_buffer[2] == 0) && scsi_bufflen(srb) - scsi_get_resid(srb) < srb->underflow) srb->result = DID_ERROR << 16; last_sector_hacks(us, srb); return; /* * Error and abort processing: try to resynchronize with the device * by issuing a port reset. If that fails, try a class-specific * device reset. */ Handle_Errors: /* * Set the RESETTING bit, and clear the ABORTING bit so that * the reset may proceed. */ scsi_lock(us_to_host(us)); set_bit(US_FLIDX_RESETTING, &us->dflags); clear_bit(US_FLIDX_ABORTING, &us->dflags); scsi_unlock(us_to_host(us)); /* * We must release the device lock because the pre_reset routine * will want to acquire it. */ mutex_unlock(&us->dev_mutex); result = usb_stor_port_reset(us); mutex_lock(&us->dev_mutex); if (result < 0) { scsi_lock(us_to_host(us)); usb_stor_report_device_reset(us); scsi_unlock(us_to_host(us)); us->transport_reset(us); } clear_bit(US_FLIDX_RESETTING, &us->dflags); last_sector_hacks(us, srb); } /* Stop the current URB transfer */ void usb_stor_stop_transport(struct us_data *us) { /* * If the state machine is blocked waiting for an URB, * let's wake it up. The test_and_clear_bit() call * guarantees that if a URB has just been submitted, * it won't be cancelled more than once. */ if (test_and_clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags)) { usb_stor_dbg(us, "-- cancelling URB\n"); usb_unlink_urb(us->current_urb); } /* If we are waiting for a scatter-gather operation, cancel it. */ if (test_and_clear_bit(US_FLIDX_SG_ACTIVE, &us->dflags)) { usb_stor_dbg(us, "-- cancelling sg request\n"); usb_sg_cancel(&us->current_sg); } } /* * Control/Bulk and Control/Bulk/Interrupt transport */ int usb_stor_CB_transport(struct scsi_cmnd *srb, struct us_data *us) { unsigned int transfer_length = scsi_bufflen(srb); unsigned int pipe = 0; int result; /* COMMAND STAGE */ /* let's send the command via the control pipe */ /* * Command is sometime (f.e. after scsi_eh_prep_cmnd) on the stack. * Stack may be vmallocated. So no DMA for us. Make a copy. */ memcpy(us->iobuf, srb->cmnd, srb->cmd_len); result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, us->ifnum, us->iobuf, srb->cmd_len); /* check the return code for the command */ usb_stor_dbg(us, "Call to usb_stor_ctrl_transfer() returned %d\n", result); /* if we stalled the command, it means command failed */ if (result == USB_STOR_XFER_STALLED) { return USB_STOR_TRANSPORT_FAILED; } /* Uh oh... serious problem here */ if (result != USB_STOR_XFER_GOOD) { return USB_STOR_TRANSPORT_ERROR; } /* DATA STAGE */ /* transfer the data payload for this command, if one exists*/ if (transfer_length) { pipe = srb->sc_data_direction == DMA_FROM_DEVICE ? us->recv_bulk_pipe : us->send_bulk_pipe; result = usb_stor_bulk_srb(us, pipe, srb); usb_stor_dbg(us, "CBI data stage result is 0x%x\n", result); /* if we stalled the data transfer it means command failed */ if (result == USB_STOR_XFER_STALLED) return USB_STOR_TRANSPORT_FAILED; if (result > USB_STOR_XFER_STALLED) return USB_STOR_TRANSPORT_ERROR; } /* STATUS STAGE */ /* * NOTE: CB does not have a status stage. Silly, I know. So * we have to catch this at a higher level. */ if (us->protocol != USB_PR_CBI) return USB_STOR_TRANSPORT_GOOD; result = usb_stor_intr_transfer(us, us->iobuf, 2); usb_stor_dbg(us, "Got interrupt data (0x%x, 0x%x)\n", us->iobuf[0], us->iobuf[1]); if (result != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; /* * UFI gives us ASC and ASCQ, like a request sense * * REQUEST_SENSE and INQUIRY don't affect the sense data on UFI * devices, so we ignore the information for those commands. Note * that this means we could be ignoring a real error on these * commands, but that can't be helped. */ if (us->subclass == USB_SC_UFI) { if (srb->cmnd[0] == REQUEST_SENSE || srb->cmnd[0] == INQUIRY) return USB_STOR_TRANSPORT_GOOD; if (us->iobuf[0]) goto Failed; return USB_STOR_TRANSPORT_GOOD; } /* * If not UFI, we interpret the data as a result code * The first byte should always be a 0x0. * * Some bogus devices don't follow that rule. They stuff the ASC * into the first byte -- so if it's non-zero, call it a failure. */ if (us->iobuf[0]) { usb_stor_dbg(us, "CBI IRQ data showed reserved bType 0x%x\n", us->iobuf[0]); goto Failed; } /* The second byte & 0x0F should be 0x0 for good, otherwise error */ switch (us->iobuf[1] & 0x0F) { case 0x00: return USB_STOR_TRANSPORT_GOOD; case 0x01: goto Failed; } return USB_STOR_TRANSPORT_ERROR; /* * the CBI spec requires that the bulk pipe must be cleared * following any data-in/out command failure (section 2.4.3.1.3) */ Failed: if (pipe) usb_stor_clear_halt(us, pipe); return USB_STOR_TRANSPORT_FAILED; } EXPORT_SYMBOL_GPL(usb_stor_CB_transport); /* * Bulk only transport */ /* Determine what the maximum LUN supported is */ int usb_stor_Bulk_max_lun(struct us_data *us) { int result; /* issue the command */ us->iobuf[0] = 0; result = usb_stor_control_msg(us, us->recv_ctrl_pipe, US_BULK_GET_MAX_LUN, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, us->ifnum, us->iobuf, 1, 10*HZ); usb_stor_dbg(us, "GetMaxLUN command result is %d, data is %d\n", result, us->iobuf[0]); /* If we have a successful request, return the result if valid. */ if (result > 0) { if (us->iobuf[0] <= US_BULK_MAX_LUN_LIMIT) { return us->iobuf[0]; } else { dev_info(&us->pusb_intf->dev, "Max LUN %d is not valid, using 0 instead", us->iobuf[0]); } } /* * Some devices don't like GetMaxLUN. They may STALL the control * pipe, they may return a zero-length result, they may do nothing at * all and timeout, or they may fail in even more bizarrely creative * ways. In these cases the best approach is to use the default * value: only one LUN. */ return 0; } int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) { struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf; struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf; unsigned int transfer_length = scsi_bufflen(srb); unsigned int residue; int result; int fake_sense = 0; unsigned int cswlen; unsigned int cbwlen = US_BULK_CB_WRAP_LEN; /* Take care of BULK32 devices; set extra byte to 0 */ if (unlikely(us->fflags & US_FL_BULK32)) { cbwlen = 32; us->iobuf[31] = 0; } /* set up the command wrapper */ bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); bcb->DataTransferLength = cpu_to_le32(transfer_length); bcb->Flags = srb->sc_data_direction == DMA_FROM_DEVICE ? US_BULK_FLAG_IN : US_BULK_FLAG_OUT; bcb->Tag = ++us->tag; bcb->Lun = srb->device->lun; if (us->fflags & US_FL_SCM_MULT_TARG) bcb->Lun |= srb->device->id << 4; bcb->Length = srb->cmd_len; /* copy the command payload */ memset(bcb->CDB, 0, sizeof(bcb->CDB)); memcpy(bcb->CDB, srb->cmnd, bcb->Length); /* send it to out endpoint */ usb_stor_dbg(us, "Bulk Command S 0x%x T 0x%x L %d F %d Trg %d LUN %d CL %d\n", le32_to_cpu(bcb->Signature), bcb->Tag, le32_to_cpu(bcb->DataTransferLength), bcb->Flags, (bcb->Lun >> 4), (bcb->Lun & 0x0F), bcb->Length); result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb, cbwlen, NULL); usb_stor_dbg(us, "Bulk command transfer result=%d\n", result); if (result != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; /* DATA STAGE */ /* send/receive data payload, if there is any */ /* * Some USB-IDE converter chips need a 100us delay between the * command phase and the data phase. Some devices need a little * more than that, probably because of clock rate inaccuracies. */ if (unlikely(us->fflags & US_FL_GO_SLOW)) usleep_range(125, 150); if (transfer_length) { unsigned int pipe = srb->sc_data_direction == DMA_FROM_DEVICE ? us->recv_bulk_pipe : us->send_bulk_pipe; result = usb_stor_bulk_srb(us, pipe, srb); usb_stor_dbg(us, "Bulk data transfer result 0x%x\n", result); if (result == USB_STOR_XFER_ERROR) return USB_STOR_TRANSPORT_ERROR; /* * If the device tried to send back more data than the * amount requested, the spec requires us to transfer * the CSW anyway. Since there's no point retrying * the command, we'll return fake sense data indicating * Illegal Request, Invalid Field in CDB. */ if (result == USB_STOR_XFER_LONG) fake_sense = 1; /* * Sometimes a device will mistakenly skip the data phase * and go directly to the status phase without sending a * zero-length packet. If we get a 13-byte response here, * check whether it really is a CSW. */ if (result == USB_STOR_XFER_SHORT && srb->sc_data_direction == DMA_FROM_DEVICE && transfer_length - scsi_get_resid(srb) == US_BULK_CS_WRAP_LEN) { struct scatterlist *sg = NULL; unsigned int offset = 0; if (usb_stor_access_xfer_buf((unsigned char *) bcs, US_BULK_CS_WRAP_LEN, srb, &sg, &offset, FROM_XFER_BUF) == US_BULK_CS_WRAP_LEN && bcs->Signature == cpu_to_le32(US_BULK_CS_SIGN)) { usb_stor_dbg(us, "Device skipped data phase\n"); scsi_set_resid(srb, transfer_length); goto skipped_data_phase; } } } /* * See flow chart on pg 15 of the Bulk Only Transport spec for * an explanation of how this code works. */ /* get CSW for device status */ usb_stor_dbg(us, "Attempting to get CSW...\n"); result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, US_BULK_CS_WRAP_LEN, &cswlen); /* * Some broken devices add unnecessary zero-length packets to the * end of their data transfers. Such packets show up as 0-length * CSWs. If we encounter such a thing, try to read the CSW again. */ if (result == USB_STOR_XFER_SHORT && cswlen == 0) { usb_stor_dbg(us, "Received 0-length CSW; retrying...\n"); result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, US_BULK_CS_WRAP_LEN, &cswlen); } /* did the attempt to read the CSW fail? */ if (result == USB_STOR_XFER_STALLED) { /* get the status again */ usb_stor_dbg(us, "Attempting to get CSW (2nd try)...\n"); result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, US_BULK_CS_WRAP_LEN, NULL); } /* if we still have a failure at this point, we're in trouble */ usb_stor_dbg(us, "Bulk status result = %d\n", result); if (result != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; skipped_data_phase: /* check bulk status */ residue = le32_to_cpu(bcs->Residue); usb_stor_dbg(us, "Bulk Status S 0x%x T 0x%x R %u Stat 0x%x\n", le32_to_cpu(bcs->Signature), bcs->Tag, residue, bcs->Status); if (!(bcs->Tag == us->tag || (us->fflags & US_FL_BULK_IGNORE_TAG)) || bcs->Status > US_BULK_STAT_PHASE) { usb_stor_dbg(us, "Bulk logical error\n"); return USB_STOR_TRANSPORT_ERROR; } /* * Some broken devices report odd signatures, so we do not check them * for validity against the spec. We store the first one we see, * and check subsequent transfers for validity against this signature. */ if (!us->bcs_signature) { us->bcs_signature = bcs->Signature; if (us->bcs_signature != cpu_to_le32(US_BULK_CS_SIGN)) usb_stor_dbg(us, "Learnt BCS signature 0x%08X\n", le32_to_cpu(us->bcs_signature)); } else if (bcs->Signature != us->bcs_signature) { usb_stor_dbg(us, "Signature mismatch: got %08X, expecting %08X\n", le32_to_cpu(bcs->Signature), le32_to_cpu(us->bcs_signature)); return USB_STOR_TRANSPORT_ERROR; } /* * try to compute the actual residue, based on how much data * was really transferred and what the device tells us */ if (residue && !(us->fflags & US_FL_IGNORE_RESIDUE)) { /* * Heuristically detect devices that generate bogus residues * by seeing what happens with INQUIRY and READ CAPACITY * commands. */ if (bcs->Status == US_BULK_STAT_OK && scsi_get_resid(srb) == 0 && ((srb->cmnd[0] == INQUIRY && transfer_length == 36) || (srb->cmnd[0] == READ_CAPACITY && transfer_length == 8))) { us->fflags |= US_FL_IGNORE_RESIDUE; } else { residue = min(residue, transfer_length); scsi_set_resid(srb, max(scsi_get_resid(srb), residue)); } } /* based on the status code, we report good or bad */ switch (bcs->Status) { case US_BULK_STAT_OK: /* device babbled -- return fake sense data */ if (fake_sense) { memcpy(srb->sense_buffer, usb_stor_sense_invalidCDB, sizeof(usb_stor_sense_invalidCDB)); return USB_STOR_TRANSPORT_NO_SENSE; } /* command good -- note that data could be short */ return USB_STOR_TRANSPORT_GOOD; case US_BULK_STAT_FAIL: /* command failed */ return USB_STOR_TRANSPORT_FAILED; case US_BULK_STAT_PHASE: /* * phase error -- note that a transport reset will be * invoked by the invoke_transport() function */ return USB_STOR_TRANSPORT_ERROR; } /* we should never get here, but if we do, we're in trouble */ return USB_STOR_TRANSPORT_ERROR; } EXPORT_SYMBOL_GPL(usb_stor_Bulk_transport); /*********************************************************************** * Reset routines ***********************************************************************/ /* * This is the common part of the device reset code. * * It's handy that every transport mechanism uses the control endpoint for * resets. * * Basically, we send a reset with a 5-second timeout, so we don't get * jammed attempting to do the reset. */ static int usb_stor_reset_common(struct us_data *us, u8 request, u8 requesttype, u16 value, u16 index, void *data, u16 size) { int result; int result2; if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { usb_stor_dbg(us, "No reset during disconnect\n"); return -EIO; } result = usb_stor_control_msg(us, us->send_ctrl_pipe, request, requesttype, value, index, data, size, 5*HZ); if (result < 0) { usb_stor_dbg(us, "Soft reset failed: %d\n", result); return result; } /* * Give the device some time to recover from the reset, * but don't delay disconnect processing. */ wait_event_interruptible_timeout(us->delay_wait, test_bit(US_FLIDX_DISCONNECTING, &us->dflags), HZ*6); if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { usb_stor_dbg(us, "Reset interrupted by disconnect\n"); return -EIO; } usb_stor_dbg(us, "Soft reset: clearing bulk-in endpoint halt\n"); result = usb_stor_clear_halt(us, us->recv_bulk_pipe); usb_stor_dbg(us, "Soft reset: clearing bulk-out endpoint halt\n"); result2 = usb_stor_clear_halt(us, us->send_bulk_pipe); /* return a result code based on the result of the clear-halts */ if (result >= 0) result = result2; if (result < 0) usb_stor_dbg(us, "Soft reset failed\n"); else usb_stor_dbg(us, "Soft reset done\n"); return result; } /* This issues a CB[I] Reset to the device in question */ #define CB_RESET_CMD_SIZE 12 int usb_stor_CB_reset(struct us_data *us) { memset(us->iobuf, 0xFF, CB_RESET_CMD_SIZE); us->iobuf[0] = SEND_DIAGNOSTIC; us->iobuf[1] = 4; return usb_stor_reset_common(us, US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, us->ifnum, us->iobuf, CB_RESET_CMD_SIZE); } EXPORT_SYMBOL_GPL(usb_stor_CB_reset); /* * This issues a Bulk-only Reset to the device in question, including * clearing the subsequent endpoint halts that may occur. */ int usb_stor_Bulk_reset(struct us_data *us) { return usb_stor_reset_common(us, US_BULK_RESET_REQUEST, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, us->ifnum, NULL, 0); } EXPORT_SYMBOL_GPL(usb_stor_Bulk_reset); /* * Issue a USB port reset to the device. The caller must not hold * us->dev_mutex. */ int usb_stor_port_reset(struct us_data *us) { int result; /*for these devices we must use the class specific method */ if (us->pusb_dev->quirks & USB_QUIRK_RESET) return -EPERM; result = usb_lock_device_for_reset(us->pusb_dev, us->pusb_intf); if (result < 0) usb_stor_dbg(us, "unable to lock device for reset: %d\n", result); else { /* Were we disconnected while waiting for the lock? */ if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { result = -EIO; usb_stor_dbg(us, "No reset during disconnect\n"); } else { result = usb_reset_device(us->pusb_dev); usb_stor_dbg(us, "usb_reset_device returns %d\n", result); } usb_unlock_device(us->pusb_dev); } return result; } |
| 40 3080 3075 | 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 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Definitions related to Power Management Quality of Service (PM QoS). * * Copyright (C) 2020 Intel Corporation * * Authors: * Mark Gross <mgross@linux.intel.com> * Rafael J. Wysocki <rafael.j.wysocki@intel.com> */ #ifndef _LINUX_PM_QOS_H #define _LINUX_PM_QOS_H #include <linux/plist.h> #include <linux/notifier.h> #include <linux/device.h> enum pm_qos_flags_status { PM_QOS_FLAGS_UNDEFINED = -1, PM_QOS_FLAGS_NONE, PM_QOS_FLAGS_SOME, PM_QOS_FLAGS_ALL, }; #define PM_QOS_DEFAULT_VALUE (-1) #define PM_QOS_LATENCY_ANY S32_MAX #define PM_QOS_LATENCY_ANY_NS ((s64)PM_QOS_LATENCY_ANY * NSEC_PER_USEC) #define PM_QOS_CPU_LATENCY_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE PM_QOS_LATENCY_ANY #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT PM_QOS_LATENCY_ANY #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS PM_QOS_LATENCY_ANY_NS #define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE 0 #define PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE 0 #define PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE FREQ_QOS_MAX_DEFAULT_VALUE #define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT (-1) #define PM_QOS_FLAG_NO_POWER_OFF (1 << 0) enum pm_qos_type { PM_QOS_UNITIALIZED, PM_QOS_MAX, /* return the largest value */ PM_QOS_MIN, /* return the smallest value */ }; /* * Note: The lockless read path depends on the CPU accessing target_value * or effective_flags atomically. Atomic access is only guaranteed on all CPU * types linux supports for 32 bit quantites */ struct pm_qos_constraints { struct plist_head list; s32 target_value; /* Do not change to 64 bit */ s32 default_value; s32 no_constraint_value; enum pm_qos_type type; struct blocking_notifier_head *notifiers; }; struct pm_qos_request { struct plist_node node; struct pm_qos_constraints *qos; }; struct pm_qos_flags_request { struct list_head node; s32 flags; /* Do not change to 64 bit */ }; struct pm_qos_flags { struct list_head list; s32 effective_flags; /* Do not change to 64 bit */ }; #define FREQ_QOS_MIN_DEFAULT_VALUE 0 #define FREQ_QOS_MAX_DEFAULT_VALUE S32_MAX enum freq_qos_req_type { FREQ_QOS_MIN = 1, FREQ_QOS_MAX, }; struct freq_constraints { struct pm_qos_constraints min_freq; struct blocking_notifier_head min_freq_notifiers; struct pm_qos_constraints max_freq; struct blocking_notifier_head max_freq_notifiers; }; struct freq_qos_request { enum freq_qos_req_type type; struct plist_node pnode; struct freq_constraints *qos; }; enum dev_pm_qos_req_type { DEV_PM_QOS_RESUME_LATENCY = 1, DEV_PM_QOS_LATENCY_TOLERANCE, DEV_PM_QOS_MIN_FREQUENCY, DEV_PM_QOS_MAX_FREQUENCY, DEV_PM_QOS_FLAGS, }; struct dev_pm_qos_request { enum dev_pm_qos_req_type type; union { struct plist_node pnode; struct pm_qos_flags_request flr; struct freq_qos_request freq; } data; struct device *dev; }; struct dev_pm_qos { struct pm_qos_constraints resume_latency; struct pm_qos_constraints latency_tolerance; struct freq_constraints freq; struct pm_qos_flags flags; struct dev_pm_qos_request *resume_latency_req; struct dev_pm_qos_request *latency_tolerance_req; struct dev_pm_qos_request *flags_req; }; /* Action requested to pm_qos_update_target */ enum pm_qos_req_action { PM_QOS_ADD_REQ, /* Add a new request */ PM_QOS_UPDATE_REQ, /* Update an existing request */ PM_QOS_REMOVE_REQ /* Remove an existing request */ }; static inline int dev_pm_qos_request_active(struct dev_pm_qos_request *req) { return req->dev != NULL; } s32 pm_qos_read_value(struct pm_qos_constraints *c); int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, enum pm_qos_req_action action, int value); bool pm_qos_update_flags(struct pm_qos_flags *pqf, struct pm_qos_flags_request *req, enum pm_qos_req_action action, s32 val); #ifdef CONFIG_CPU_IDLE s32 cpu_latency_qos_limit(void); bool cpu_latency_qos_request_active(struct pm_qos_request *req); void cpu_latency_qos_add_request(struct pm_qos_request *req, s32 value); void cpu_latency_qos_update_request(struct pm_qos_request *req, s32 new_value); void cpu_latency_qos_remove_request(struct pm_qos_request *req); #else static inline s32 cpu_latency_qos_limit(void) { return INT_MAX; } static inline bool cpu_latency_qos_request_active(struct pm_qos_request *req) { return false; } static inline void cpu_latency_qos_add_request(struct pm_qos_request *req, s32 value) {} static inline void cpu_latency_qos_update_request(struct pm_qos_request *req, s32 new_value) {} static inline void cpu_latency_qos_remove_request(struct pm_qos_request *req) {} #endif #ifdef CONFIG_PM enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask); enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask); s32 __dev_pm_qos_resume_latency(struct device *dev); s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type); int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, s32 value); int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value); int dev_pm_qos_remove_request(struct dev_pm_qos_request *req); int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier, enum dev_pm_qos_req_type type); int dev_pm_qos_remove_notifier(struct device *dev, struct notifier_block *notifier, enum dev_pm_qos_req_type type); void dev_pm_qos_constraints_init(struct device *dev); void dev_pm_qos_constraints_destroy(struct device *dev); int dev_pm_qos_add_ancestor_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, s32 value); int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value); void dev_pm_qos_hide_latency_limit(struct device *dev); int dev_pm_qos_expose_flags(struct device *dev, s32 value); void dev_pm_qos_hide_flags(struct device *dev); int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set); s32 dev_pm_qos_get_user_latency_tolerance(struct device *dev); int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val); int dev_pm_qos_expose_latency_tolerance(struct device *dev); void dev_pm_qos_hide_latency_tolerance(struct device *dev); static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) { return dev->power.qos->resume_latency_req->data.pnode.prio; } static inline s32 dev_pm_qos_requested_flags(struct device *dev) { return dev->power.qos->flags_req->data.flr.flags; } static inline s32 dev_pm_qos_raw_resume_latency(struct device *dev) { return IS_ERR_OR_NULL(dev->power.qos) ? PM_QOS_RESUME_LATENCY_NO_CONSTRAINT : pm_qos_read_value(&dev->power.qos->resume_latency); } #else static inline enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask) { return PM_QOS_FLAGS_UNDEFINED; } static inline enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask) { return PM_QOS_FLAGS_UNDEFINED; } static inline s32 __dev_pm_qos_resume_latency(struct device *dev) { return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } static inline s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type) { switch (type) { case DEV_PM_QOS_RESUME_LATENCY: return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; case DEV_PM_QOS_MIN_FREQUENCY: return PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE; case DEV_PM_QOS_MAX_FREQUENCY: return PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE; default: WARN_ON(1); return 0; } } static inline int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, s32 value) { return 0; } static inline int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value) { return 0; } static inline int dev_pm_qos_remove_request(struct dev_pm_qos_request *req) { return 0; } static inline int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier, enum dev_pm_qos_req_type type) { return 0; } static inline int dev_pm_qos_remove_notifier(struct device *dev, struct notifier_block *notifier, enum dev_pm_qos_req_type type) { return 0; } static inline void dev_pm_qos_constraints_init(struct device *dev) { dev->power.power_state = PMSG_ON; } static inline void dev_pm_qos_constraints_destroy(struct device *dev) { dev->power.power_state = PMSG_INVALID; } static inline int dev_pm_qos_add_ancestor_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, s32 value) { return 0; } static inline int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) { return 0; } static inline void dev_pm_qos_hide_latency_limit(struct device *dev) {} static inline int dev_pm_qos_expose_flags(struct device *dev, s32 value) { return 0; } static inline void dev_pm_qos_hide_flags(struct device *dev) {} static inline int dev_pm_qos_update_flags(struct device *dev, s32 m, bool set) { return 0; } static inline s32 dev_pm_qos_get_user_latency_tolerance(struct device *dev) { return PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT; } static inline int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val) { return 0; } static inline int dev_pm_qos_expose_latency_tolerance(struct device *dev) { return 0; } static inline void dev_pm_qos_hide_latency_tolerance(struct device *dev) {} static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) { return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } static inline s32 dev_pm_qos_requested_flags(struct device *dev) { return 0; } static inline s32 dev_pm_qos_raw_resume_latency(struct device *dev) { return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } #endif static inline int freq_qos_request_active(struct freq_qos_request *req) { return !IS_ERR_OR_NULL(req->qos); } void freq_constraints_init(struct freq_constraints *qos); s32 freq_qos_read_value(struct freq_constraints *qos, enum freq_qos_req_type type); int freq_qos_add_request(struct freq_constraints *qos, struct freq_qos_request *req, enum freq_qos_req_type type, s32 value); int freq_qos_update_request(struct freq_qos_request *req, s32 new_value); int freq_qos_remove_request(struct freq_qos_request *req); int freq_qos_apply(struct freq_qos_request *req, enum pm_qos_req_action action, s32 value); int freq_qos_add_notifier(struct freq_constraints *qos, enum freq_qos_req_type type, struct notifier_block *notifier); int freq_qos_remove_notifier(struct freq_constraints *qos, enum freq_qos_req_type type, struct notifier_block *notifier); #endif |
| 58 58 58 120 120 58 58 58 58 58 58 58 58 58 58 56 56 56 58 58 120 58 376 373 374 | 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 | // SPDX-License-Identifier: GPL-2.0 /* * linux/fs/proc/inode.c * * Copyright (C) 1991, 1992 Linus Torvalds */ #include <linux/cache.h> #include <linux/time.h> #include <linux/proc_fs.h> #include <linux/kernel.h> #include <linux/pid_namespace.h> #include <linux/mm.h> #include <linux/string.h> #include <linux/stat.h> #include <linux/completion.h> #include <linux/poll.h> #include <linux/printk.h> #include <linux/file.h> #include <linux/limits.h> #include <linux/init.h> #include <linux/module.h> #include <linux/sysctl.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/mount.h> #include <linux/bug.h> #include "internal.h" static void proc_evict_inode(struct inode *inode) { struct ctl_table_header *head; struct proc_inode *ei = PROC_I(inode); truncate_inode_pages_final(&inode->i_data); clear_inode(inode); /* Stop tracking associated processes */ if (ei->pid) proc_pid_evict_inode(ei); head = ei->sysctl; if (head) { RCU_INIT_POINTER(ei->sysctl, NULL); proc_sys_evict_inode(inode, head); } } static struct kmem_cache *proc_inode_cachep __ro_after_init; static struct kmem_cache *pde_opener_cache __ro_after_init; static struct inode *proc_alloc_inode(struct super_block *sb) { struct proc_inode *ei; ei = alloc_inode_sb(sb, proc_inode_cachep, GFP_KERNEL); if (!ei) return NULL; ei->pid = NULL; ei->fd = 0; ei->op.proc_get_link = NULL; ei->pde = NULL; ei->sysctl = NULL; ei->sysctl_entry = NULL; INIT_HLIST_NODE(&ei->sibling_inodes); ei->ns_ops = NULL; return &ei->vfs_inode; } static void proc_free_inode(struct inode *inode) { struct proc_inode *ei = PROC_I(inode); if (ei->pid) put_pid(ei->pid); /* Let go of any associated proc directory entry */ if (ei->pde) pde_put(ei->pde); kmem_cache_free(proc_inode_cachep, PROC_I(inode)); } static void init_once(void *foo) { struct proc_inode *ei = (struct proc_inode *) foo; inode_init_once(&ei->vfs_inode); } void __init proc_init_kmemcache(void) { proc_inode_cachep = kmem_cache_create("proc_inode_cache", sizeof(struct proc_inode), 0, (SLAB_RECLAIM_ACCOUNT| SLAB_ACCOUNT| SLAB_PANIC), init_once); pde_opener_cache = kmem_cache_create("pde_opener", sizeof(struct pde_opener), 0, SLAB_ACCOUNT|SLAB_PANIC, NULL); proc_dir_entry_cache = kmem_cache_create_usercopy( "proc_dir_entry", SIZEOF_PDE, 0, SLAB_PANIC, offsetof(struct proc_dir_entry, inline_name), SIZEOF_PDE_INLINE_NAME, NULL); BUILD_BUG_ON(sizeof(struct proc_dir_entry) >= SIZEOF_PDE); } void proc_invalidate_siblings_dcache(struct hlist_head *inodes, spinlock_t *lock) { struct hlist_node *node; struct super_block *old_sb = NULL; rcu_read_lock(); while ((node = hlist_first_rcu(inodes))) { struct proc_inode *ei = hlist_entry(node, struct proc_inode, sibling_inodes); struct super_block *sb; struct inode *inode; spin_lock(lock); hlist_del_init_rcu(&ei->sibling_inodes); spin_unlock(lock); inode = &ei->vfs_inode; sb = inode->i_sb; if ((sb != old_sb) && !atomic_inc_not_zero(&sb->s_active)) continue; inode = igrab(inode); rcu_read_unlock(); if (sb != old_sb) { if (old_sb) deactivate_super(old_sb); old_sb = sb; } if (unlikely(!inode)) { rcu_read_lock(); continue; } if (S_ISDIR(inode->i_mode)) { struct dentry *dir = d_find_any_alias(inode); if (dir) { d_invalidate(dir); dput(dir); } } else { struct dentry *dentry; while ((dentry = d_find_alias(inode))) { d_invalidate(dentry); dput(dentry); } } iput(inode); rcu_read_lock(); } rcu_read_unlock(); if (old_sb) deactivate_super(old_sb); } static inline const char *hidepid2str(enum proc_hidepid v) { switch (v) { case HIDEPID_OFF: return "off"; case HIDEPID_NO_ACCESS: return "noaccess"; case HIDEPID_INVISIBLE: return "invisible"; case HIDEPID_NOT_PTRACEABLE: return "ptraceable"; } WARN_ONCE(1, "bad hide_pid value: %d\n", v); return "unknown"; } static int proc_show_options(struct seq_file *seq, struct dentry *root) { struct proc_fs_info *fs_info = proc_sb_info(root->d_sb); if (!gid_eq(fs_info->pid_gid, GLOBAL_ROOT_GID)) seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, fs_info->pid_gid)); if (fs_info->hide_pid != HIDEPID_OFF) seq_printf(seq, ",hidepid=%s", hidepid2str(fs_info->hide_pid)); if (fs_info->pidonly != PROC_PIDONLY_OFF) seq_printf(seq, ",subset=pid"); return 0; } const struct super_operations proc_sops = { .alloc_inode = proc_alloc_inode, .free_inode = proc_free_inode, .drop_inode = generic_delete_inode, .evict_inode = proc_evict_inode, .statfs = simple_statfs, .show_options = proc_show_options, }; enum {BIAS = -1U<<31}; static inline int use_pde(struct proc_dir_entry *pde) { return likely(atomic_inc_unless_negative(&pde->in_use)); } static void unuse_pde(struct proc_dir_entry *pde) { if (unlikely(atomic_dec_return(&pde->in_use) == BIAS)) complete(pde->pde_unload_completion); } /* * At most 2 contexts can enter this function: the one doing the last * close on the descriptor and whoever is deleting PDE itself. * * First to enter calls ->proc_release hook and signals its completion * to the second one which waits and then does nothing. * * PDE is locked on entry, unlocked on exit. */ static void close_pdeo(struct proc_dir_entry *pde, struct pde_opener *pdeo) __releases(&pde->pde_unload_lock) { /* * close() (proc_reg_release()) can't delete an entry and proceed: * ->release hook needs to be available at the right moment. * * rmmod (remove_proc_entry() et al) can't delete an entry and proceed: * "struct file" needs to be available at the right moment. */ if (pdeo->closing) { /* somebody else is doing that, just wait */ DECLARE_COMPLETION_ONSTACK(c); pdeo->c = &c; spin_unlock(&pde->pde_unload_lock); wait_for_completion(&c); } else { struct file *file; struct completion *c; pdeo->closing = true; spin_unlock(&pde->pde_unload_lock); file = pdeo->file; pde->proc_ops->proc_release(file_inode(file), file); spin_lock(&pde->pde_unload_lock); /* Strictly after ->proc_release, see above. */ list_del(&pdeo->lh); c = pdeo->c; spin_unlock(&pde->pde_unload_lock); if (unlikely(c)) complete(c); kmem_cache_free(pde_opener_cache, pdeo); } } void proc_entry_rundown(struct proc_dir_entry *de) { DECLARE_COMPLETION_ONSTACK(c); /* Wait until all existing callers into module are done. */ de->pde_unload_completion = &c; if (atomic_add_return(BIAS, &de->in_use) != BIAS) wait_for_completion(&c); /* ->pde_openers list can't grow from now on. */ spin_lock(&de->pde_unload_lock); while (!list_empty(&de->pde_openers)) { struct pde_opener *pdeo; pdeo = list_first_entry(&de->pde_openers, struct pde_opener, lh); close_pdeo(de, pdeo); spin_lock(&de->pde_unload_lock); } spin_unlock(&de->pde_unload_lock); } static loff_t proc_reg_llseek(struct file *file, loff_t offset, int whence) { struct proc_dir_entry *pde = PDE(file_inode(file)); loff_t rv = -EINVAL; if (pde_is_permanent(pde)) { return pde->proc_ops->proc_lseek(file, offset, whence); } else if (use_pde(pde)) { rv = pde->proc_ops->proc_lseek(file, offset, whence); unuse_pde(pde); } return rv; } static ssize_t proc_reg_read_iter(struct kiocb *iocb, struct iov_iter *iter) { struct proc_dir_entry *pde = PDE(file_inode(iocb->ki_filp)); ssize_t ret; if (pde_is_permanent(pde)) return pde->proc_ops->proc_read_iter(iocb, iter); if (!use_pde(pde)) return -EIO; ret = pde->proc_ops->proc_read_iter(iocb, iter); unuse_pde(pde); return ret; } static ssize_t pde_read(struct proc_dir_entry *pde, struct file *file, char __user *buf, size_t count, loff_t *ppos) { __auto_type read = pde->proc_ops->proc_read; if (read) return read(file, buf, count, ppos); return -EIO; } static ssize_t proc_reg_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct proc_dir_entry *pde = PDE(file_inode(file)); ssize_t rv = -EIO; if (pde_is_permanent(pde)) { return pde_read(pde, file, buf, count, ppos); } else if (use_pde(pde)) { rv = pde_read(pde, file, buf, count, ppos); unuse_pde(pde); } return rv; } static ssize_t pde_write(struct proc_dir_entry *pde, struct file *file, const char __user *buf, size_t count, loff_t *ppos) { __auto_type write = pde->proc_ops->proc_write; if (write) return write(file, buf, count, ppos); return -EIO; } static ssize_t proc_reg_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct proc_dir_entry *pde = PDE(file_inode(file)); ssize_t rv = -EIO; if (pde_is_permanent(pde)) { return pde_write(pde, file, buf, count, ppos); } else if (use_pde(pde)) { rv = pde_write(pde, file, buf, count, ppos); unuse_pde(pde); } return rv; } static __poll_t pde_poll(struct proc_dir_entry *pde, struct file *file, struct poll_table_struct *pts) { __auto_type poll = pde->proc_ops->proc_poll; if (poll) return poll(file, pts); return DEFAULT_POLLMASK; } static __poll_t proc_reg_poll(struct file *file, struct poll_table_struct *pts) { struct proc_dir_entry *pde = PDE(file_inode(file)); __poll_t rv = DEFAULT_POLLMASK; if (pde_is_permanent(pde)) { return pde_poll(pde, file, pts); } else if (use_pde(pde)) { rv = pde_poll(pde, file, pts); unuse_pde(pde); } return rv; } static long pde_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg) { __auto_type ioctl = pde->proc_ops->proc_ioctl; if (ioctl) return ioctl(file, cmd, arg); return -ENOTTY; } static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct proc_dir_entry *pde = PDE(file_inode(file)); long rv = -ENOTTY; if (pde_is_permanent(pde)) { return pde_ioctl(pde, file, cmd, arg); } else if (use_pde(pde)) { rv = pde_ioctl(pde, file, cmd, arg); unuse_pde(pde); } return rv; } #ifdef CONFIG_COMPAT static long pde_compat_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg) { __auto_type compat_ioctl = pde->proc_ops->proc_compat_ioctl; if (compat_ioctl) return compat_ioctl(file, cmd, arg); return -ENOTTY; } static long proc_reg_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct proc_dir_entry *pde = PDE(file_inode(file)); long rv = -ENOTTY; if (pde_is_permanent(pde)) { return pde_compat_ioctl(pde, file, cmd, arg); } else if (use_pde(pde)) { rv = pde_compat_ioctl(pde, file, cmd, arg); unuse_pde(pde); } return rv; } #endif static int pde_mmap(struct proc_dir_entry *pde, struct file *file, struct vm_area_struct *vma) { __auto_type mmap = pde->proc_ops->proc_mmap; if (mmap) return mmap(file, vma); return -EIO; } static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma) { struct proc_dir_entry *pde = PDE(file_inode(file)); int rv = -EIO; if (pde_is_permanent(pde)) { return pde_mmap(pde, file, vma); } else if (use_pde(pde)) { rv = pde_mmap(pde, file, vma); unuse_pde(pde); } return rv; } static unsigned long pde_get_unmapped_area(struct proc_dir_entry *pde, struct file *file, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags) { if (pde->proc_ops->proc_get_unmapped_area) return pde->proc_ops->proc_get_unmapped_area(file, orig_addr, len, pgoff, flags); #ifdef CONFIG_MMU return mm_get_unmapped_area(current->mm, file, orig_addr, len, pgoff, flags); #endif return orig_addr; } static unsigned long proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct proc_dir_entry *pde = PDE(file_inode(file)); unsigned long rv = -EIO; if (pde_is_permanent(pde)) { return pde_get_unmapped_area(pde, file, orig_addr, len, pgoff, flags); } else if (use_pde(pde)) { rv = pde_get_unmapped_area(pde, file, orig_addr, len, pgoff, flags); unuse_pde(pde); } return rv; } static int proc_reg_open(struct inode *inode, struct file *file) { struct proc_dir_entry *pde = PDE(inode); int rv = 0; typeof_member(struct proc_ops, proc_open) open; struct pde_opener *pdeo; if (!pde->proc_ops->proc_lseek) file->f_mode &= ~FMODE_LSEEK; if (pde_is_permanent(pde)) { open = pde->proc_ops->proc_open; if (open) rv = open(inode, file); return rv; } /* * Ensure that * 1) PDE's ->release hook will be called no matter what * either normally by close()/->release, or forcefully by * rmmod/remove_proc_entry. * * 2) rmmod isn't blocked by opening file in /proc and sitting on * the descriptor (including "rmmod foo </proc/foo" scenario). * * Save every "struct file" with custom ->release hook. */ if (!use_pde(pde)) return -ENOENT; __auto_type release = pde->proc_ops->proc_release; if (release) { pdeo = kmem_cache_alloc(pde_opener_cache, GFP_KERNEL); if (!pdeo) { rv = -ENOMEM; goto out_unuse; } } open = pde->proc_ops->proc_open; if (open) rv = open(inode, file); if (release) { if (rv == 0) { /* To know what to release. */ pdeo->file = file; pdeo->closing = false; pdeo->c = NULL; spin_lock(&pde->pde_unload_lock); list_add(&pdeo->lh, &pde->pde_openers); spin_unlock(&pde->pde_unload_lock); } else kmem_cache_free(pde_opener_cache, pdeo); } out_unuse: unuse_pde(pde); return rv; } static int proc_reg_release(struct inode *inode, struct file *file) { struct proc_dir_entry *pde = PDE(inode); struct pde_opener *pdeo; if (pde_is_permanent(pde)) { __auto_type release = pde->proc_ops->proc_release; if (release) { return release(inode, file); } return 0; } spin_lock(&pde->pde_unload_lock); list_for_each_entry(pdeo, &pde->pde_openers, lh) { if (pdeo->file == file) { close_pdeo(pde, pdeo); return 0; } } spin_unlock(&pde->pde_unload_lock); return 0; } static const struct file_operations proc_reg_file_ops = { .llseek = proc_reg_llseek, .read = proc_reg_read, .write = proc_reg_write, .poll = proc_reg_poll, .unlocked_ioctl = proc_reg_unlocked_ioctl, .mmap = proc_reg_mmap, .get_unmapped_area = proc_reg_get_unmapped_area, .open = proc_reg_open, .release = proc_reg_release, }; static const struct file_operations proc_iter_file_ops = { .llseek = proc_reg_llseek, .read_iter = proc_reg_read_iter, .write = proc_reg_write, .splice_read = copy_splice_read, .poll = proc_reg_poll, .unlocked_ioctl = proc_reg_unlocked_ioctl, .mmap = proc_reg_mmap, .get_unmapped_area = proc_reg_get_unmapped_area, .open = proc_reg_open, .release = proc_reg_release, }; #ifdef CONFIG_COMPAT static const struct file_operations proc_reg_file_ops_compat = { .llseek = proc_reg_llseek, .read = proc_reg_read, .write = proc_reg_write, .poll = proc_reg_poll, .unlocked_ioctl = proc_reg_unlocked_ioctl, .compat_ioctl = proc_reg_compat_ioctl, .mmap = proc_reg_mmap, .get_unmapped_area = proc_reg_get_unmapped_area, .open = proc_reg_open, .release = proc_reg_release, }; static const struct file_operations proc_iter_file_ops_compat = { .llseek = proc_reg_llseek, .read_iter = proc_reg_read_iter, .splice_read = copy_splice_read, .write = proc_reg_write, .poll = proc_reg_poll, .unlocked_ioctl = proc_reg_unlocked_ioctl, .compat_ioctl = proc_reg_compat_ioctl, .mmap = proc_reg_mmap, .get_unmapped_area = proc_reg_get_unmapped_area, .open = proc_reg_open, .release = proc_reg_release, }; #endif static void proc_put_link(void *p) { unuse_pde(p); } static const char *proc_get_link(struct dentry *dentry, struct inode *inode, struct delayed_call *done) { struct proc_dir_entry *pde = PDE(inode); if (!use_pde(pde)) return ERR_PTR(-EINVAL); set_delayed_call(done, proc_put_link, pde); return pde->data; } const struct inode_operations proc_link_inode_operations = { .get_link = proc_get_link, }; struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de) { struct inode *inode = new_inode(sb); if (!inode) { pde_put(de); return NULL; } inode->i_private = de->data; inode->i_ino = de->low_ino; simple_inode_init_ts(inode); PROC_I(inode)->pde = de; if (is_empty_pde(de)) { make_empty_dir_inode(inode); return inode; } if (de->mode) { inode->i_mode = de->mode; inode->i_uid = de->uid; inode->i_gid = de->gid; } if (de->size) inode->i_size = de->size; if (de->nlink) set_nlink(inode, de->nlink); if (S_ISREG(inode->i_mode)) { inode->i_op = de->proc_iops; if (pde_has_proc_read_iter(de)) inode->i_fop = &proc_iter_file_ops; else inode->i_fop = &proc_reg_file_ops; #ifdef CONFIG_COMPAT if (pde_has_proc_compat_ioctl(de)) { if (pde_has_proc_read_iter(de)) inode->i_fop = &proc_iter_file_ops_compat; else inode->i_fop = &proc_reg_file_ops_compat; } #endif } else if (S_ISDIR(inode->i_mode)) { inode->i_op = de->proc_iops; inode->i_fop = de->proc_dir_ops; } else if (S_ISLNK(inode->i_mode)) { inode->i_op = de->proc_iops; inode->i_fop = NULL; } else { BUG(); } return inode; } |
| 165 165 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 | // SPDX-License-Identifier: GPL-2.0-only /* * This file provides /sys/class/ieee80211/<wiphy name>/ * and some default attributes. * * Copyright 2005-2006 Jiri Benc <jbenc@suse.cz> * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> * Copyright (C) 2020-2021, 2023-2024 Intel Corporation */ #include <linux/device.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/nl80211.h> #include <linux/rtnetlink.h> #include <net/cfg80211.h> #include "sysfs.h" #include "core.h" #include "rdev-ops.h" static inline struct cfg80211_registered_device *dev_to_rdev( struct device *dev) { return container_of(dev, struct cfg80211_registered_device, wiphy.dev); } #define SHOW_FMT(name, fmt, member) \ static ssize_t name ## _show(struct device *dev, \ struct device_attribute *attr, \ char *buf) \ { \ return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \ } \ static DEVICE_ATTR_RO(name) SHOW_FMT(index, "%d", wiphy_idx); SHOW_FMT(macaddress, "%pM", wiphy.perm_addr); SHOW_FMT(address_mask, "%pM", wiphy.addr_mask); static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; return sprintf(buf, "%s\n", wiphy_name(wiphy)); } static DEVICE_ATTR_RO(name); static ssize_t addresses_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; char *start = buf; int i; if (!wiphy->addresses) return sprintf(buf, "%pM\n", wiphy->perm_addr); for (i = 0; i < wiphy->n_addresses; i++) buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr); return buf - start; } static DEVICE_ATTR_RO(addresses); static struct attribute *ieee80211_attrs[] = { &dev_attr_index.attr, &dev_attr_macaddress.attr, &dev_attr_address_mask.attr, &dev_attr_addresses.attr, &dev_attr_name.attr, NULL, }; ATTRIBUTE_GROUPS(ieee80211); static void wiphy_dev_release(struct device *dev) { struct cfg80211_registered_device *rdev = dev_to_rdev(dev); cfg80211_dev_free(rdev); } #ifdef CONFIG_PM_SLEEP static void cfg80211_leave_all(struct cfg80211_registered_device *rdev) { struct wireless_dev *wdev; list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) cfg80211_leave(rdev, wdev); } static int wiphy_suspend(struct device *dev) { struct cfg80211_registered_device *rdev = dev_to_rdev(dev); int ret = 0; rdev->suspend_at = ktime_get_boottime_seconds(); rtnl_lock(); wiphy_lock(&rdev->wiphy); if (rdev->wiphy.registered) { if (!rdev->wiphy.wowlan_config) { cfg80211_leave_all(rdev); cfg80211_process_rdev_events(rdev); } cfg80211_process_wiphy_works(rdev, NULL); if (rdev->ops->suspend) ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config); if (ret == 1) { /* Driver refuse to configure wowlan */ cfg80211_leave_all(rdev); cfg80211_process_rdev_events(rdev); cfg80211_process_wiphy_works(rdev, NULL); ret = rdev_suspend(rdev, NULL); } if (ret == 0) rdev->suspended = true; } wiphy_unlock(&rdev->wiphy); rtnl_unlock(); return ret; } static int wiphy_resume(struct device *dev) { struct cfg80211_registered_device *rdev = dev_to_rdev(dev); int ret = 0; /* Age scan results with time spent in suspend */ cfg80211_bss_age(rdev, ktime_get_boottime_seconds() - rdev->suspend_at); rtnl_lock(); wiphy_lock(&rdev->wiphy); if (rdev->wiphy.registered && rdev->ops->resume) ret = rdev_resume(rdev); rdev->suspended = false; queue_work(system_unbound_wq, &rdev->wiphy_work); wiphy_unlock(&rdev->wiphy); if (ret) cfg80211_shutdown_all_interfaces(&rdev->wiphy); rtnl_unlock(); return ret; } static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume); #define WIPHY_PM_OPS (&wiphy_pm_ops) #else #define WIPHY_PM_OPS NULL #endif static const void *wiphy_namespace(const struct device *d) { struct wiphy *wiphy = container_of(d, struct wiphy, dev); return wiphy_net(wiphy); } struct class ieee80211_class = { .name = "ieee80211", .dev_release = wiphy_dev_release, .dev_groups = ieee80211_groups, .pm = WIPHY_PM_OPS, .ns_type = &net_ns_type_operations, .namespace = wiphy_namespace, }; int wiphy_sysfs_init(void) { return class_register(&ieee80211_class); } void wiphy_sysfs_exit(void) { class_unregister(&ieee80211_class); } |
| 3 3 3 3 3 2 2 1 3 3 4 4 1 3 4 3 3 3 3 3 3 3 3 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 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 | // SPDX-License-Identifier: GPL-2.0+ /* * hwmon driver for Gigabyte AORUS Waterforce AIO CPU coolers: X240, X280 and X360. * * Copyright 2023 Aleksa Savic <savicaleksa83@gmail.com> */ #include <linux/debugfs.h> #include <linux/hid.h> #include <linux/hwmon.h> #include <linux/jiffies.h> #include <linux/module.h> #include <linux/spinlock.h> #include <linux/unaligned.h> #define DRIVER_NAME "gigabyte_waterforce" #define USB_VENDOR_ID_GIGABYTE 0x1044 #define USB_PRODUCT_ID_WATERFORCE 0x7a4d /* Gigabyte AORUS WATERFORCE X240, X280 and X360 */ #define STATUS_VALIDITY (2 * 1000) /* ms */ #define MAX_REPORT_LENGTH 6144 #define WATERFORCE_TEMP_SENSOR 0xD #define WATERFORCE_FAN_SPEED 0x02 #define WATERFORCE_PUMP_SPEED 0x05 #define WATERFORCE_FAN_DUTY 0x08 #define WATERFORCE_PUMP_DUTY 0x09 /* Control commands, inner offsets and lengths */ static const u8 get_status_cmd[] = { 0x99, 0xDA }; #define FIRMWARE_VER_START_OFFSET_1 2 #define FIRMWARE_VER_START_OFFSET_2 3 static const u8 get_firmware_ver_cmd[] = { 0x99, 0xD6 }; /* Command lengths */ #define GET_STATUS_CMD_LENGTH 2 #define GET_FIRMWARE_VER_CMD_LENGTH 2 static const char *const waterforce_temp_label[] = { "Coolant temp" }; static const char *const waterforce_speed_label[] = { "Fan speed", "Pump speed" }; struct waterforce_data { struct hid_device *hdev; struct device *hwmon_dev; struct dentry *debugfs; /* For locking access to buffer */ struct mutex buffer_lock; /* For queueing multiple readers */ struct mutex status_report_request_mutex; /* For reinitializing the completion below */ spinlock_t status_report_request_lock; struct completion status_report_received; struct completion fw_version_processed; /* Sensor data */ s32 temp_input[1]; u16 speed_input[2]; /* Fan and pump speed in RPM */ u8 duty_input[2]; /* Fan and pump duty in 0-100% */ u8 *buffer; int firmware_version; unsigned long updated; /* jiffies */ }; static umode_t waterforce_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { switch (type) { case hwmon_temp: switch (attr) { case hwmon_temp_label: case hwmon_temp_input: return 0444; default: break; } break; case hwmon_fan: switch (attr) { case hwmon_fan_label: case hwmon_fan_input: return 0444; default: break; } break; case hwmon_pwm: switch (attr) { case hwmon_pwm_input: return 0444; default: break; } break; default: break; } return 0; } /* Writes the command to the device with the rest of the report filled with zeroes */ static int waterforce_write_expanded(struct waterforce_data *priv, const u8 *cmd, int cmd_length) { int ret; mutex_lock(&priv->buffer_lock); memcpy_and_pad(priv->buffer, MAX_REPORT_LENGTH, cmd, cmd_length, 0x00); ret = hid_hw_output_report(priv->hdev, priv->buffer, MAX_REPORT_LENGTH); mutex_unlock(&priv->buffer_lock); return ret; } static int waterforce_get_status(struct waterforce_data *priv) { int ret = mutex_lock_interruptible(&priv->status_report_request_mutex); if (ret < 0) return ret; if (!time_after(jiffies, priv->updated + msecs_to_jiffies(STATUS_VALIDITY))) { /* Data is up to date */ goto unlock_and_return; } /* * Disable raw event parsing for a moment to safely reinitialize the * completion. Reinit is done because hidraw could have triggered * the raw event parsing and marked the priv->status_report_received * completion as done. */ spin_lock_bh(&priv->status_report_request_lock); reinit_completion(&priv->status_report_received); spin_unlock_bh(&priv->status_report_request_lock); /* Send command for getting status */ ret = waterforce_write_expanded(priv, get_status_cmd, GET_STATUS_CMD_LENGTH); if (ret < 0) goto unlock_and_return; ret = wait_for_completion_interruptible_timeout(&priv->status_report_received, msecs_to_jiffies(STATUS_VALIDITY)); if (ret == 0) ret = -ETIMEDOUT; unlock_and_return: mutex_unlock(&priv->status_report_request_mutex); if (ret < 0) return ret; return 0; } static int waterforce_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { struct waterforce_data *priv = dev_get_drvdata(dev); int ret = waterforce_get_status(priv); if (ret < 0) return ret; switch (type) { case hwmon_temp: *val = priv->temp_input[channel]; break; case hwmon_fan: *val = priv->speed_input[channel]; break; case hwmon_pwm: switch (attr) { case hwmon_pwm_input: *val = DIV_ROUND_CLOSEST(priv->duty_input[channel] * 255, 100); break; default: return -EOPNOTSUPP; } break; default: return -EOPNOTSUPP; /* unreachable */ } return 0; } static int waterforce_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, const char **str) { switch (type) { case hwmon_temp: *str = waterforce_temp_label[channel]; break; case hwmon_fan: *str = waterforce_speed_label[channel]; break; default: return -EOPNOTSUPP; /* unreachable */ } return 0; } static int waterforce_get_fw_ver(struct hid_device *hdev) { struct waterforce_data *priv = hid_get_drvdata(hdev); int ret; ret = waterforce_write_expanded(priv, get_firmware_ver_cmd, GET_FIRMWARE_VER_CMD_LENGTH); if (ret < 0) return ret; ret = wait_for_completion_interruptible_timeout(&priv->fw_version_processed, msecs_to_jiffies(STATUS_VALIDITY)); if (ret == 0) return -ETIMEDOUT; else if (ret < 0) return ret; return 0; } static const struct hwmon_ops waterforce_hwmon_ops = { .is_visible = waterforce_is_visible, .read = waterforce_read, .read_string = waterforce_read_string }; static const struct hwmon_channel_info *waterforce_info[] = { HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_LABEL), HWMON_CHANNEL_INFO(fan, HWMON_F_INPUT | HWMON_F_LABEL, HWMON_F_INPUT | HWMON_F_LABEL), HWMON_CHANNEL_INFO(pwm, HWMON_PWM_INPUT, HWMON_PWM_INPUT), NULL }; static const struct hwmon_chip_info waterforce_chip_info = { .ops = &waterforce_hwmon_ops, .info = waterforce_info, }; static int waterforce_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { struct waterforce_data *priv = hid_get_drvdata(hdev); if (data[0] == get_firmware_ver_cmd[0] && data[1] == get_firmware_ver_cmd[1]) { /* Received a firmware version report */ priv->firmware_version = data[FIRMWARE_VER_START_OFFSET_1] * 10 + data[FIRMWARE_VER_START_OFFSET_2]; if (!completion_done(&priv->fw_version_processed)) complete_all(&priv->fw_version_processed); return 0; } if (data[0] != get_status_cmd[0] || data[1] != get_status_cmd[1]) return 0; priv->temp_input[0] = data[WATERFORCE_TEMP_SENSOR] * 1000; priv->speed_input[0] = get_unaligned_le16(data + WATERFORCE_FAN_SPEED); priv->speed_input[1] = get_unaligned_le16(data + WATERFORCE_PUMP_SPEED); priv->duty_input[0] = data[WATERFORCE_FAN_DUTY]; priv->duty_input[1] = data[WATERFORCE_PUMP_DUTY]; spin_lock(&priv->status_report_request_lock); if (!completion_done(&priv->status_report_received)) complete_all(&priv->status_report_received); spin_unlock(&priv->status_report_request_lock); priv->updated = jiffies; return 0; } static int firmware_version_show(struct seq_file *seqf, void *unused) { struct waterforce_data *priv = seqf->private; seq_printf(seqf, "%u\n", priv->firmware_version); return 0; } DEFINE_SHOW_ATTRIBUTE(firmware_version); static void waterforce_debugfs_init(struct waterforce_data *priv) { char name[64]; if (!priv->firmware_version) return; /* There's nothing to show in debugfs */ scnprintf(name, sizeof(name), "%s-%s", DRIVER_NAME, dev_name(&priv->hdev->dev)); priv->debugfs = debugfs_create_dir(name, NULL); debugfs_create_file("firmware_version", 0444, priv->debugfs, priv, &firmware_version_fops); } static int waterforce_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct waterforce_data *priv; int ret; priv = devm_kzalloc(&hdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->hdev = hdev; hid_set_drvdata(hdev, priv); /* * Initialize priv->updated to STATUS_VALIDITY seconds in the past, making * the initial empty data invalid for waterforce_read() without the need for * a special case there. */ priv->updated = jiffies - msecs_to_jiffies(STATUS_VALIDITY); ret = hid_parse(hdev); if (ret) { hid_err(hdev, "hid parse failed with %d\n", ret); return ret; } /* * Enable hidraw so existing user-space tools can continue to work. */ ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); if (ret) { hid_err(hdev, "hid hw start failed with %d\n", ret); return ret; } ret = hid_hw_open(hdev); if (ret) { hid_err(hdev, "hid hw open failed with %d\n", ret); goto fail_and_stop; } priv->buffer = devm_kzalloc(&hdev->dev, MAX_REPORT_LENGTH, GFP_KERNEL); if (!priv->buffer) { ret = -ENOMEM; goto fail_and_close; } mutex_init(&priv->status_report_request_mutex); mutex_init(&priv->buffer_lock); spin_lock_init(&priv->status_report_request_lock); init_completion(&priv->status_report_received); init_completion(&priv->fw_version_processed); hid_device_io_start(hdev); ret = waterforce_get_fw_ver(hdev); if (ret < 0) hid_warn(hdev, "fw version request failed with %d\n", ret); priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, "waterforce", priv, &waterforce_chip_info, NULL); if (IS_ERR(priv->hwmon_dev)) { ret = PTR_ERR(priv->hwmon_dev); hid_err(hdev, "hwmon registration failed with %d\n", ret); goto fail_and_close; } waterforce_debugfs_init(priv); return 0; fail_and_close: hid_hw_close(hdev); fail_and_stop: hid_hw_stop(hdev); return ret; } static void waterforce_remove(struct hid_device *hdev) { struct waterforce_data *priv = hid_get_drvdata(hdev); debugfs_remove_recursive(priv->debugfs); hwmon_device_unregister(priv->hwmon_dev); hid_hw_close(hdev); hid_hw_stop(hdev); } static const struct hid_device_id waterforce_table[] = { { HID_USB_DEVICE(USB_VENDOR_ID_GIGABYTE, USB_PRODUCT_ID_WATERFORCE) }, { } }; MODULE_DEVICE_TABLE(hid, waterforce_table); static struct hid_driver waterforce_driver = { .name = "waterforce", .id_table = waterforce_table, .probe = waterforce_probe, .remove = waterforce_remove, .raw_event = waterforce_raw_event, }; static int __init waterforce_init(void) { return hid_register_driver(&waterforce_driver); } static void __exit waterforce_exit(void) { hid_unregister_driver(&waterforce_driver); } /* When compiled into the kernel, initialize after the HID bus */ late_initcall(waterforce_init); module_exit(waterforce_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Aleksa Savic <savicaleksa83@gmail.com>"); MODULE_DESCRIPTION("Hwmon driver for Gigabyte AORUS Waterforce AIO coolers"); |
| 52 51 51 50 51 50 51 51 3181 3182 52 | 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 | // SPDX-License-Identifier: GPL-2.0 /* * Wakeup statistics in sysfs * * Copyright (c) 2019 Linux Foundation * Copyright (c) 2019 Greg Kroah-Hartman <gregkh@linuxfoundation.org> * Copyright (c) 2019 Google Inc. */ #include <linux/device.h> #include <linux/idr.h> #include <linux/init.h> #include <linux/kdev_t.h> #include <linux/kernel.h> #include <linux/kobject.h> #include <linux/slab.h> #include <linux/timekeeping.h> #include "power.h" static struct class *wakeup_class; #define wakeup_attr(_name) \ static ssize_t _name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct wakeup_source *ws = dev_get_drvdata(dev); \ \ return sysfs_emit(buf, "%lu\n", ws->_name); \ } \ static DEVICE_ATTR_RO(_name) wakeup_attr(active_count); wakeup_attr(event_count); wakeup_attr(wakeup_count); wakeup_attr(expire_count); static ssize_t active_time_ms_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wakeup_source *ws = dev_get_drvdata(dev); ktime_t active_time = ws->active ? ktime_sub(ktime_get(), ws->last_time) : 0; return sysfs_emit(buf, "%lld\n", ktime_to_ms(active_time)); } static DEVICE_ATTR_RO(active_time_ms); static ssize_t total_time_ms_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wakeup_source *ws = dev_get_drvdata(dev); ktime_t active_time; ktime_t total_time = ws->total_time; if (ws->active) { active_time = ktime_sub(ktime_get(), ws->last_time); total_time = ktime_add(total_time, active_time); } return sysfs_emit(buf, "%lld\n", ktime_to_ms(total_time)); } static DEVICE_ATTR_RO(total_time_ms); static ssize_t max_time_ms_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wakeup_source *ws = dev_get_drvdata(dev); ktime_t active_time; ktime_t max_time = ws->max_time; if (ws->active) { active_time = ktime_sub(ktime_get(), ws->last_time); if (active_time > max_time) max_time = active_time; } return sysfs_emit(buf, "%lld\n", ktime_to_ms(max_time)); } static DEVICE_ATTR_RO(max_time_ms); static ssize_t last_change_ms_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wakeup_source *ws = dev_get_drvdata(dev); return sysfs_emit(buf, "%lld\n", ktime_to_ms(ws->last_time)); } static DEVICE_ATTR_RO(last_change_ms); static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wakeup_source *ws = dev_get_drvdata(dev); return sysfs_emit(buf, "%s\n", ws->name); } static DEVICE_ATTR_RO(name); static ssize_t prevent_suspend_time_ms_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wakeup_source *ws = dev_get_drvdata(dev); ktime_t prevent_sleep_time = ws->prevent_sleep_time; if (ws->active && ws->autosleep_enabled) { prevent_sleep_time = ktime_add(prevent_sleep_time, ktime_sub(ktime_get(), ws->start_prevent_time)); } return sysfs_emit(buf, "%lld\n", ktime_to_ms(prevent_sleep_time)); } static DEVICE_ATTR_RO(prevent_suspend_time_ms); static struct attribute *wakeup_source_attrs[] = { &dev_attr_name.attr, &dev_attr_active_count.attr, &dev_attr_event_count.attr, &dev_attr_wakeup_count.attr, &dev_attr_expire_count.attr, &dev_attr_active_time_ms.attr, &dev_attr_total_time_ms.attr, &dev_attr_max_time_ms.attr, &dev_attr_last_change_ms.attr, &dev_attr_prevent_suspend_time_ms.attr, NULL, }; ATTRIBUTE_GROUPS(wakeup_source); static void device_create_release(struct device *dev) { kfree(dev); } static struct device *wakeup_source_device_create(struct device *parent, struct wakeup_source *ws) { struct device *dev = NULL; int retval; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) { retval = -ENOMEM; goto error; } device_initialize(dev); dev->devt = MKDEV(0, 0); dev->class = wakeup_class; dev->parent = parent; dev->groups = wakeup_source_groups; dev->release = device_create_release; dev_set_drvdata(dev, ws); device_set_pm_not_required(dev); retval = dev_set_name(dev, "wakeup%d", ws->id); if (retval) goto error; retval = device_add(dev); if (retval) goto error; return dev; error: put_device(dev); return ERR_PTR(retval); } /** * wakeup_source_sysfs_add - Add wakeup_source attributes to sysfs. * @parent: Device given wakeup source is associated with (or NULL if virtual). * @ws: Wakeup source to be added in sysfs. */ int wakeup_source_sysfs_add(struct device *parent, struct wakeup_source *ws) { struct device *dev; dev = wakeup_source_device_create(parent, ws); if (IS_ERR(dev)) return PTR_ERR(dev); ws->dev = dev; return 0; } /** * pm_wakeup_source_sysfs_add - Add wakeup_source attributes to sysfs * for a device if they're missing. * @parent: Device given wakeup source is associated with */ int pm_wakeup_source_sysfs_add(struct device *parent) { if (!parent->power.wakeup || parent->power.wakeup->dev) return 0; return wakeup_source_sysfs_add(parent, parent->power.wakeup); } /** * wakeup_source_sysfs_remove - Remove wakeup_source attributes from sysfs. * @ws: Wakeup source to be removed from sysfs. */ void wakeup_source_sysfs_remove(struct wakeup_source *ws) { device_unregister(ws->dev); } static int __init wakeup_sources_sysfs_init(void) { wakeup_class = class_create("wakeup"); return PTR_ERR_OR_ZERO(wakeup_class); } postcore_initcall(wakeup_sources_sysfs_init); |
| 77 | 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 | /* SPDX-License-Identifier: GPL-2.0 */ /* * * Definitions for mount interface. This describes the in the kernel build * linkedlist with mounted filesystems. * * Author: Marco van Wieringen <mvw@planets.elm.net> * */ #ifndef _LINUX_MOUNT_H #define _LINUX_MOUNT_H #include <linux/types.h> #include <asm/barrier.h> struct super_block; struct dentry; struct user_namespace; struct mnt_idmap; struct file_system_type; struct fs_context; struct file; struct path; #define MNT_NOSUID 0x01 #define MNT_NODEV 0x02 #define MNT_NOEXEC 0x04 #define MNT_NOATIME 0x08 #define MNT_NODIRATIME 0x10 #define MNT_RELATIME 0x20 #define MNT_READONLY 0x40 /* does the user want this to be r/o? */ #define MNT_NOSYMFOLLOW 0x80 #define MNT_SHRINKABLE 0x100 #define MNT_WRITE_HOLD 0x200 #define MNT_SHARED 0x1000 /* if the vfsmount is a shared mount */ #define MNT_UNBINDABLE 0x2000 /* if the vfsmount is a unbindable mount */ /* * MNT_SHARED_MASK is the set of flags that should be cleared when a * mount becomes shared. Currently, this is only the flag that says a * mount cannot be bind mounted, since this is how we create a mount * that shares events with another mount. If you add a new MNT_* * flag, consider how it interacts with shared mounts. */ #define MNT_SHARED_MASK (MNT_UNBINDABLE) #define MNT_USER_SETTABLE_MASK (MNT_NOSUID | MNT_NODEV | MNT_NOEXEC \ | MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME \ | MNT_READONLY | MNT_NOSYMFOLLOW) #define MNT_ATIME_MASK (MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME ) #define MNT_INTERNAL_FLAGS (MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL | \ MNT_DOOMED | MNT_SYNC_UMOUNT | MNT_MARKED) #define MNT_INTERNAL 0x4000 #define MNT_LOCK_ATIME 0x040000 #define MNT_LOCK_NOEXEC 0x080000 #define MNT_LOCK_NOSUID 0x100000 #define MNT_LOCK_NODEV 0x200000 #define MNT_LOCK_READONLY 0x400000 #define MNT_LOCKED 0x800000 #define MNT_DOOMED 0x1000000 #define MNT_SYNC_UMOUNT 0x2000000 #define MNT_MARKED 0x4000000 #define MNT_UMOUNT 0x8000000 struct vfsmount { struct dentry *mnt_root; /* root of the mounted tree */ struct super_block *mnt_sb; /* pointer to superblock */ int mnt_flags; struct mnt_idmap *mnt_idmap; } __randomize_layout; static inline struct mnt_idmap *mnt_idmap(const struct vfsmount *mnt) { /* Pairs with smp_store_release() in do_idmap_mount(). */ return READ_ONCE(mnt->mnt_idmap); } extern int mnt_want_write(struct vfsmount *mnt); extern int mnt_want_write_file(struct file *file); extern void mnt_drop_write(struct vfsmount *mnt); extern void mnt_drop_write_file(struct file *file); extern void mntput(struct vfsmount *mnt); extern struct vfsmount *mntget(struct vfsmount *mnt); extern void mnt_make_shortterm(struct vfsmount *mnt); extern struct vfsmount *mnt_clone_internal(const struct path *path); extern bool __mnt_is_readonly(struct vfsmount *mnt); extern bool mnt_may_suid(struct vfsmount *mnt); extern struct vfsmount *clone_private_mount(const struct path *path); int mnt_get_write_access(struct vfsmount *mnt); void mnt_put_write_access(struct vfsmount *mnt); extern struct vfsmount *fc_mount(struct fs_context *fc); extern struct vfsmount *vfs_create_mount(struct fs_context *fc); extern struct vfsmount *vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void *data); extern struct vfsmount *vfs_submount(const struct dentry *mountpoint, struct file_system_type *type, const char *name, void *data); extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list); extern void mark_mounts_for_expiry(struct list_head *mounts); extern bool path_is_mountpoint(const struct path *path); extern bool our_mnt(struct vfsmount *mnt); extern struct vfsmount *kern_mount(struct file_system_type *); extern void kern_unmount(struct vfsmount *mnt); extern int may_umount_tree(struct vfsmount *); extern int may_umount(struct vfsmount *); int do_mount(const char *, const char __user *, const char *, unsigned long, void *); extern struct vfsmount *collect_mounts(const struct path *); extern void drop_collected_mounts(struct vfsmount *); extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *, struct vfsmount *); extern void kern_unmount_array(struct vfsmount *mnt[], unsigned int num); extern int cifs_root_data(char **dev, char **opts); #endif /* _LINUX_MOUNT_H */ |
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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 | // SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2009-2012 Realtek Corporation.*/ #include "../wifi.h" #include "../efuse.h" #include "../base.h" #include "../cam.h" #include "../ps.h" #include "../usb.h" #include "reg.h" #include "def.h" #include "phy.h" #include "../rtl8192c/phy_common.h" #include "mac.h" #include "dm.h" #include "../rtl8192c/dm_common.h" #include "../rtl8192c/fw_common.h" #include "hw.h" #include "../rtl8192ce/hw.h" #include "trx.h" #include "led.h" #include "table.h" static void _rtl92cu_phy_param_tab_init(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_phy *rtlphy = &(rtlpriv->phy); struct rtl_efuse *rtlefuse = rtl_efuse(rtlpriv); rtlphy->hwparam_tables[MAC_REG].length = RTL8192CUMAC_2T_ARRAYLENGTH; rtlphy->hwparam_tables[MAC_REG].pdata = RTL8192CUMAC_2T_ARRAY; if (IS_HIGHT_PA(rtlefuse->board_type)) { rtlphy->hwparam_tables[PHY_REG_PG].length = RTL8192CUPHY_REG_ARRAY_PG_HPLENGTH; rtlphy->hwparam_tables[PHY_REG_PG].pdata = RTL8192CUPHY_REG_ARRAY_PG_HP; } else { rtlphy->hwparam_tables[PHY_REG_PG].length = RTL8192CUPHY_REG_ARRAY_PGLENGTH; rtlphy->hwparam_tables[PHY_REG_PG].pdata = RTL8192CUPHY_REG_ARRAY_PG; } /* 2T */ rtlphy->hwparam_tables[PHY_REG_2T].length = RTL8192CUPHY_REG_2TARRAY_LENGTH; rtlphy->hwparam_tables[PHY_REG_2T].pdata = RTL8192CUPHY_REG_2TARRAY; rtlphy->hwparam_tables[RADIOA_2T].length = RTL8192CURADIOA_2TARRAYLENGTH; rtlphy->hwparam_tables[RADIOA_2T].pdata = RTL8192CURADIOA_2TARRAY; rtlphy->hwparam_tables[RADIOB_2T].length = RTL8192CURADIOB_2TARRAYLENGTH; rtlphy->hwparam_tables[RADIOB_2T].pdata = RTL8192CU_RADIOB_2TARRAY; rtlphy->hwparam_tables[AGCTAB_2T].length = RTL8192CUAGCTAB_2TARRAYLENGTH; rtlphy->hwparam_tables[AGCTAB_2T].pdata = RTL8192CUAGCTAB_2TARRAY; /* 1T */ if (IS_HIGHT_PA(rtlefuse->board_type)) { rtlphy->hwparam_tables[PHY_REG_1T].length = RTL8192CUPHY_REG_1T_HPARRAYLENGTH; rtlphy->hwparam_tables[PHY_REG_1T].pdata = RTL8192CUPHY_REG_1T_HPARRAY; rtlphy->hwparam_tables[RADIOA_1T].length = RTL8192CURADIOA_1T_HPARRAYLENGTH; rtlphy->hwparam_tables[RADIOA_1T].pdata = RTL8192CURADIOA_1T_HPARRAY; rtlphy->hwparam_tables[RADIOB_1T].length = RTL8192CURADIOB_1TARRAYLENGTH; rtlphy->hwparam_tables[RADIOB_1T].pdata = RTL8192CU_RADIOB_1TARRAY; rtlphy->hwparam_tables[AGCTAB_1T].length = RTL8192CUAGCTAB_1T_HPARRAYLENGTH; rtlphy->hwparam_tables[AGCTAB_1T].pdata = RTL8192CUAGCTAB_1T_HPARRAY; } else { rtlphy->hwparam_tables[PHY_REG_1T].length = RTL8192CUPHY_REG_1TARRAY_LENGTH; rtlphy->hwparam_tables[PHY_REG_1T].pdata = RTL8192CUPHY_REG_1TARRAY; rtlphy->hwparam_tables[RADIOA_1T].length = RTL8192CURADIOA_1TARRAYLENGTH; rtlphy->hwparam_tables[RADIOA_1T].pdata = RTL8192CU_RADIOA_1TARRAY; rtlphy->hwparam_tables[RADIOB_1T].length = RTL8192CURADIOB_1TARRAYLENGTH; rtlphy->hwparam_tables[RADIOB_1T].pdata = RTL8192CU_RADIOB_1TARRAY; rtlphy->hwparam_tables[AGCTAB_1T].length = RTL8192CUAGCTAB_1TARRAYLENGTH; rtlphy->hwparam_tables[AGCTAB_1T].pdata = RTL8192CUAGCTAB_1TARRAY; } } static void _rtl92cu_read_txpower_info_from_hwpg(struct ieee80211_hw *hw, bool autoload_fail, u8 *hwinfo) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); u8 rf_path, index, tempval; u16 i; for (rf_path = 0; rf_path < 2; rf_path++) { for (i = 0; i < 3; i++) { if (!autoload_fail) { rtlefuse-> eeprom_chnlarea_txpwr_cck[rf_path][i] = hwinfo[EEPROM_TXPOWERCCK + rf_path * 3 + i]; rtlefuse-> eeprom_chnlarea_txpwr_ht40_1s[rf_path][i] = hwinfo[EEPROM_TXPOWERHT40_1S + rf_path * 3 + i]; } else { rtlefuse-> eeprom_chnlarea_txpwr_cck[rf_path][i] = EEPROM_DEFAULT_TXPOWERLEVEL; rtlefuse-> eeprom_chnlarea_txpwr_ht40_1s[rf_path][i] = EEPROM_DEFAULT_TXPOWERLEVEL; } } } for (i = 0; i < 3; i++) { if (!autoload_fail) tempval = hwinfo[EEPROM_TXPOWERHT40_2SDIFF + i]; else tempval = EEPROM_DEFAULT_HT40_2SDIFF; rtlefuse->eprom_chnl_txpwr_ht40_2sdf[RF90_PATH_A][i] = (tempval & 0xf); rtlefuse->eprom_chnl_txpwr_ht40_2sdf[RF90_PATH_B][i] = ((tempval & 0xf0) >> 4); } for (rf_path = 0; rf_path < 2; rf_path++) for (i = 0; i < 3; i++) RTPRINT(rtlpriv, FINIT, INIT_EEPROM, "RF(%d) EEPROM CCK Area(%d) = 0x%x\n", rf_path, i, rtlefuse-> eeprom_chnlarea_txpwr_cck[rf_path][i]); for (rf_path = 0; rf_path < 2; rf_path++) for (i = 0; i < 3; i++) RTPRINT(rtlpriv, FINIT, INIT_EEPROM, "RF(%d) EEPROM HT40 1S Area(%d) = 0x%x\n", rf_path, i, rtlefuse-> eeprom_chnlarea_txpwr_ht40_1s[rf_path][i]); for (rf_path = 0; rf_path < 2; rf_path++) for (i = 0; i < 3; i++) RTPRINT(rtlpriv, FINIT, INIT_EEPROM, "RF(%d) EEPROM HT40 2S Diff Area(%d) = 0x%x\n", rf_path, i, rtlefuse-> eprom_chnl_txpwr_ht40_2sdf[rf_path][i]); for (rf_path = 0; rf_path < 2; rf_path++) { for (i = 0; i < 14; i++) { index = rtl92c_get_chnl_group((u8)i); rtlefuse->txpwrlevel_cck[rf_path][i] = rtlefuse->eeprom_chnlarea_txpwr_cck[rf_path][index]; rtlefuse->txpwrlevel_ht40_1s[rf_path][i] = rtlefuse-> eeprom_chnlarea_txpwr_ht40_1s[rf_path][index]; if ((rtlefuse-> eeprom_chnlarea_txpwr_ht40_1s[rf_path][index] - rtlefuse-> eprom_chnl_txpwr_ht40_2sdf[rf_path][index]) > 0) { rtlefuse->txpwrlevel_ht40_2s[rf_path][i] = rtlefuse-> eeprom_chnlarea_txpwr_ht40_1s[rf_path] [index] - rtlefuse-> eprom_chnl_txpwr_ht40_2sdf[rf_path] [index]; } else { rtlefuse->txpwrlevel_ht40_2s[rf_path][i] = 0; } } for (i = 0; i < 14; i++) { RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "RF(%d)-Ch(%d) [CCK / HT40_1S / HT40_2S] = [0x%x / 0x%x / 0x%x]\n", rf_path, i, rtlefuse->txpwrlevel_cck[rf_path][i], rtlefuse->txpwrlevel_ht40_1s[rf_path][i], rtlefuse->txpwrlevel_ht40_2s[rf_path][i]); } } for (i = 0; i < 3; i++) { if (!autoload_fail) { rtlefuse->eeprom_pwrlimit_ht40[i] = hwinfo[EEPROM_TXPWR_GROUP + i]; rtlefuse->eeprom_pwrlimit_ht20[i] = hwinfo[EEPROM_TXPWR_GROUP + 3 + i]; } else { rtlefuse->eeprom_pwrlimit_ht40[i] = 0; rtlefuse->eeprom_pwrlimit_ht20[i] = 0; } } for (rf_path = 0; rf_path < 2; rf_path++) { for (i = 0; i < 14; i++) { index = rtl92c_get_chnl_group((u8)i); if (rf_path == RF90_PATH_A) { rtlefuse->pwrgroup_ht20[rf_path][i] = (rtlefuse->eeprom_pwrlimit_ht20[index] & 0xf); rtlefuse->pwrgroup_ht40[rf_path][i] = (rtlefuse->eeprom_pwrlimit_ht40[index] & 0xf); } else if (rf_path == RF90_PATH_B) { rtlefuse->pwrgroup_ht20[rf_path][i] = ((rtlefuse->eeprom_pwrlimit_ht20[index] & 0xf0) >> 4); rtlefuse->pwrgroup_ht40[rf_path][i] = ((rtlefuse->eeprom_pwrlimit_ht40[index] & 0xf0) >> 4); } RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "RF-%d pwrgroup_ht20[%d] = 0x%x\n", rf_path, i, rtlefuse->pwrgroup_ht20[rf_path][i]); RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "RF-%d pwrgroup_ht40[%d] = 0x%x\n", rf_path, i, rtlefuse->pwrgroup_ht40[rf_path][i]); } } for (i = 0; i < 14; i++) { index = rtl92c_get_chnl_group((u8)i); if (!autoload_fail) tempval = hwinfo[EEPROM_TXPOWERHT20DIFF + index]; else tempval = EEPROM_DEFAULT_HT20_DIFF; rtlefuse->txpwr_ht20diff[RF90_PATH_A][i] = (tempval & 0xF); rtlefuse->txpwr_ht20diff[RF90_PATH_B][i] = ((tempval >> 4) & 0xF); if (rtlefuse->txpwr_ht20diff[RF90_PATH_A][i] & BIT(3)) rtlefuse->txpwr_ht20diff[RF90_PATH_A][i] |= 0xF0; if (rtlefuse->txpwr_ht20diff[RF90_PATH_B][i] & BIT(3)) rtlefuse->txpwr_ht20diff[RF90_PATH_B][i] |= 0xF0; index = rtl92c_get_chnl_group((u8)i); if (!autoload_fail) tempval = hwinfo[EEPROM_TXPOWER_OFDMDIFF + index]; else tempval = EEPROM_DEFAULT_LEGACYHTTXPOWERDIFF; rtlefuse->txpwr_legacyhtdiff[RF90_PATH_A][i] = (tempval & 0xF); rtlefuse->txpwr_legacyhtdiff[RF90_PATH_B][i] = ((tempval >> 4) & 0xF); } rtlefuse->legacy_ht_txpowerdiff = rtlefuse->txpwr_legacyhtdiff[RF90_PATH_A][7]; for (i = 0; i < 14; i++) RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "RF-A Ht20 to HT40 Diff[%d] = 0x%x\n", i, rtlefuse->txpwr_ht20diff[RF90_PATH_A][i]); for (i = 0; i < 14; i++) RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "RF-A Legacy to Ht40 Diff[%d] = 0x%x\n", i, rtlefuse->txpwr_legacyhtdiff[RF90_PATH_A][i]); for (i = 0; i < 14; i++) RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "RF-B Ht20 to HT40 Diff[%d] = 0x%x\n", i, rtlefuse->txpwr_ht20diff[RF90_PATH_B][i]); for (i = 0; i < 14; i++) RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "RF-B Legacy to HT40 Diff[%d] = 0x%x\n", i, rtlefuse->txpwr_legacyhtdiff[RF90_PATH_B][i]); if (!autoload_fail) rtlefuse->eeprom_regulatory = (hwinfo[RF_OPTION1] & 0x7); else rtlefuse->eeprom_regulatory = 0; RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "eeprom_regulatory = 0x%x\n", rtlefuse->eeprom_regulatory); if (!autoload_fail) { rtlefuse->eeprom_tssi[RF90_PATH_A] = hwinfo[EEPROM_TSSI_A]; rtlefuse->eeprom_tssi[RF90_PATH_B] = hwinfo[EEPROM_TSSI_B]; } else { rtlefuse->eeprom_tssi[RF90_PATH_A] = EEPROM_DEFAULT_TSSI; rtlefuse->eeprom_tssi[RF90_PATH_B] = EEPROM_DEFAULT_TSSI; } RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "TSSI_A = 0x%x, TSSI_B = 0x%x\n", rtlefuse->eeprom_tssi[RF90_PATH_A], rtlefuse->eeprom_tssi[RF90_PATH_B]); if (!autoload_fail) tempval = hwinfo[EEPROM_THERMAL_METER]; else tempval = EEPROM_DEFAULT_THERMALMETER; rtlefuse->eeprom_thermalmeter = (tempval & 0x1f); if (rtlefuse->eeprom_thermalmeter < 0x06 || rtlefuse->eeprom_thermalmeter > 0x1c) rtlefuse->eeprom_thermalmeter = 0x12; if (rtlefuse->eeprom_thermalmeter == 0x1f || autoload_fail) rtlefuse->apk_thermalmeterignore = true; rtlefuse->thermalmeter[0] = rtlefuse->eeprom_thermalmeter; RTPRINT(rtlpriv, FINIT, INIT_TXPOWER, "thermalmeter = 0x%x\n", rtlefuse->eeprom_thermalmeter); } static void _rtl92cu_read_board_type(struct ieee80211_hw *hw, u8 *contents) { struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); u8 boardtype; if (IS_NORMAL_CHIP(rtlhal->version)) { boardtype = ((contents[EEPROM_RF_OPT1]) & BOARD_TYPE_NORMAL_MASK) >> 5; /*bit[7:5]*/ } else { boardtype = contents[EEPROM_RF_OPT4]; boardtype &= BOARD_TYPE_TEST_MASK; } rtlefuse->board_type = boardtype; if (IS_HIGHT_PA(rtlefuse->board_type)) rtlefuse->external_pa = 1; pr_info("Board Type %x\n", rtlefuse->board_type); } static void _rtl92cu_read_adapter_info(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); int params[] = {RTL8190_EEPROM_ID, EEPROM_VID, EEPROM_DID, EEPROM_SVID, EEPROM_SMID, EEPROM_MAC_ADDR, EEPROM_CHANNELPLAN, EEPROM_VERSION, EEPROM_CUSTOMER_ID, 0}; u8 *hwinfo; hwinfo = kzalloc(HWSET_MAX_SIZE, GFP_KERNEL); if (!hwinfo) return; if (rtl_get_hwinfo(hw, rtlpriv, HWSET_MAX_SIZE, hwinfo, params)) goto exit; _rtl92cu_read_txpower_info_from_hwpg(hw, rtlefuse->autoload_failflag, hwinfo); _rtl92cu_read_board_type(hw, hwinfo); rtlefuse->txpwr_fromeprom = true; if (rtlhal->oem_id == RT_CID_DEFAULT) { switch (rtlefuse->eeprom_oemid) { case EEPROM_CID_DEFAULT: if (rtlefuse->eeprom_did == 0x8176) { if ((rtlefuse->eeprom_svid == 0x103C && rtlefuse->eeprom_smid == 0x1629)) rtlhal->oem_id = RT_CID_819X_HP; else rtlhal->oem_id = RT_CID_DEFAULT; } else { rtlhal->oem_id = RT_CID_DEFAULT; } break; case EEPROM_CID_TOSHIBA: rtlhal->oem_id = RT_CID_TOSHIBA; break; case EEPROM_CID_QMI: rtlhal->oem_id = RT_CID_819X_QMI; break; case EEPROM_CID_WHQL: default: rtlhal->oem_id = RT_CID_DEFAULT; break; } } exit: kfree(hwinfo); } static void _rtl92cu_hal_customized_behavior(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); switch (rtlhal->oem_id) { case RT_CID_819X_HP: rtlpriv->ledctl.led_opendrain = true; break; case RT_CID_819X_LENOVO: case RT_CID_DEFAULT: case RT_CID_TOSHIBA: case RT_CID_CCX: case RT_CID_819X_ACER: case RT_CID_WHQL: default: break; } rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, "RT Customized ID: 0x%02X\n", rtlhal->oem_id); } void rtl92cu_read_eeprom_info(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); u8 tmp_u1b; if (!IS_NORMAL_CHIP(rtlhal->version)) return; tmp_u1b = rtl_read_byte(rtlpriv, REG_9346CR); rtlefuse->epromtype = (tmp_u1b & BOOT_FROM_EEPROM) ? EEPROM_93C46 : EEPROM_BOOT_EFUSE; rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, "Boot from %s\n", tmp_u1b & BOOT_FROM_EEPROM ? "EERROM" : "EFUSE"); rtlefuse->autoload_failflag = (tmp_u1b & EEPROM_EN) ? false : true; rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "Autoload %s\n", tmp_u1b & EEPROM_EN ? "OK!!" : "ERR!!"); _rtl92cu_read_adapter_info(hw); _rtl92cu_hal_customized_behavior(hw); return; } static int _rtl92cu_init_power_on(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); int status = 0; u16 value16; u8 value8; /* polling autoload done. */ u32 pollingcount = 0; do { if (rtl_read_byte(rtlpriv, REG_APS_FSMCO) & PFM_ALDN) { rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, "Autoload Done!\n"); break; } if (pollingcount++ > 100) { pr_err("Failed to polling REG_APS_FSMCO[PFM_ALDN] done!\n"); return -ENODEV; } } while (true); /* 0. RSV_CTRL 0x1C[7:0] = 0 unlock ISO/CLK/Power control register */ rtl_write_byte(rtlpriv, REG_RSV_CTRL, 0x0); /* Power on when re-enter from IPS/Radio off/card disable */ /* enable SPS into PWM mode */ rtl_write_byte(rtlpriv, REG_SPS0_CTRL, 0x2b); udelay(100); value8 = rtl_read_byte(rtlpriv, REG_LDOV12D_CTRL); if (0 == (value8 & LDV12_EN)) { value8 |= LDV12_EN; rtl_write_byte(rtlpriv, REG_LDOV12D_CTRL, value8); rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, " power-on :REG_LDOV12D_CTRL Reg0x21:0x%02x\n", value8); udelay(100); value8 = rtl_read_byte(rtlpriv, REG_SYS_ISO_CTRL); value8 &= ~ISO_MD2PP; rtl_write_byte(rtlpriv, REG_SYS_ISO_CTRL, value8); } /* auto enable WLAN */ pollingcount = 0; value16 = rtl_read_word(rtlpriv, REG_APS_FSMCO); value16 |= APFM_ONMAC; rtl_write_word(rtlpriv, REG_APS_FSMCO, value16); do { if (!(rtl_read_word(rtlpriv, REG_APS_FSMCO) & APFM_ONMAC)) { pr_info("MAC auto ON okay!\n"); break; } if (pollingcount++ > 1000) { pr_err("Failed to polling REG_APS_FSMCO[APFM_ONMAC] done!\n"); return -ENODEV; } } while (true); /* Enable Radio ,GPIO ,and LED function */ rtl_write_word(rtlpriv, REG_APS_FSMCO, 0x0812); /* release RF digital isolation */ value16 = rtl_read_word(rtlpriv, REG_SYS_ISO_CTRL); value16 &= ~ISO_DIOR; rtl_write_word(rtlpriv, REG_SYS_ISO_CTRL, value16); /* Reconsider when to do this operation after asking HWSD. */ pollingcount = 0; rtl_write_byte(rtlpriv, REG_APSD_CTRL, (rtl_read_byte(rtlpriv, REG_APSD_CTRL) & ~BIT(6))); do { pollingcount++; } while ((pollingcount < 200) && (rtl_read_byte(rtlpriv, REG_APSD_CTRL) & BIT(7))); /* Enable MAC DMA/WMAC/SCHEDULE/SEC block */ value16 = rtl_read_word(rtlpriv, REG_CR); value16 |= (HCI_TXDMA_EN | HCI_RXDMA_EN | TXDMA_EN | RXDMA_EN | PROTOCOL_EN | SCHEDULE_EN | MACTXEN | MACRXEN | ENSEC); rtl_write_word(rtlpriv, REG_CR, value16); return status; } static void _rtl92cu_init_queue_reserved_page(struct ieee80211_hw *hw, u8 out_ep_num, u8 queue_sel) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); bool ischipn = IS_NORMAL_CHIP(rtlhal->version); u32 outepnum = (u32)out_ep_num; u32 numhq = 0; u32 numlq = 0; u32 numnq = 0; u32 numpubq; u32 value32; u8 value8; u32 txqpagenum, txqpageunit, txqremaininpage; numpubq = (ischipn) ? CHIP_B_PAGE_NUM_PUBQ : CHIP_A_PAGE_NUM_PUBQ; txqpagenum = TX_TOTAL_PAGE_NUMBER - numpubq; txqpageunit = txqpagenum / outepnum; txqremaininpage = txqpagenum % outepnum; if (queue_sel & TX_SELE_HQ) numhq = txqpageunit; if (queue_sel & TX_SELE_LQ) numlq = txqpageunit; /* HIGH priority queue always present in the configuration of * 2 out-ep. Remainder pages have assigned to High queue. */ if (outepnum > 1 && txqremaininpage) numhq += txqremaininpage; /* NOTE: This step done before writing REG_RQPN. */ if (ischipn) { if (queue_sel & TX_SELE_NQ) numnq = txqpageunit; value8 = (u8)_NPQ(numnq); rtl_write_byte(rtlpriv, REG_RQPN_NPQ, value8); } /* TX DMA */ value32 = _HPQ(numhq) | _LPQ(numlq) | _PUBQ(numpubq) | LD_RQPN; rtl_write_dword(rtlpriv, REG_RQPN, value32); } static void _rtl92c_init_trx_buffer(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 txpktbuf_bndy = TX_PAGE_BOUNDARY; u8 value8; rtl_write_byte(rtlpriv, REG_TXPKTBUF_BCNQ_BDNY, txpktbuf_bndy); rtl_write_byte(rtlpriv, REG_TXPKTBUF_MGQ_BDNY, txpktbuf_bndy); rtl_write_byte(rtlpriv, REG_TXPKTBUF_WMAC_LBK_BF_HD, txpktbuf_bndy); rtl_write_byte(rtlpriv, REG_TRXFF_BNDY, txpktbuf_bndy); rtl_write_byte(rtlpriv, REG_TDECTRL+1, txpktbuf_bndy); rtl_write_word(rtlpriv, (REG_TRXFF_BNDY + 2), 0x27FF); value8 = _PSRX(RX_PAGE_SIZE_REG_VALUE) | _PSTX(PBP_128); rtl_write_byte(rtlpriv, REG_PBP, value8); } static void _rtl92c_init_chipn_reg_priority(struct ieee80211_hw *hw, u16 beq, u16 bkq, u16 viq, u16 voq, u16 mgtq, u16 hiq) { struct rtl_priv *rtlpriv = rtl_priv(hw); u16 value16 = (rtl_read_word(rtlpriv, REG_TRXDMA_CTRL) & 0x7); value16 |= _TXDMA_BEQ_MAP(beq) | _TXDMA_BKQ_MAP(bkq) | _TXDMA_VIQ_MAP(viq) | _TXDMA_VOQ_MAP(voq) | _TXDMA_MGQ_MAP(mgtq) | _TXDMA_HIQ_MAP(hiq); rtl_write_word(rtlpriv, REG_TRXDMA_CTRL, value16); } static void _rtl92cu_init_chipn_one_out_ep_priority(struct ieee80211_hw *hw, u8 queue_sel) { u16 value; switch (queue_sel) { case TX_SELE_HQ: value = QUEUE_HIGH; break; case TX_SELE_LQ: value = QUEUE_LOW; break; case TX_SELE_NQ: value = QUEUE_NORMAL; break; default: WARN_ON(1); /* Shall not reach here! */ return; } _rtl92c_init_chipn_reg_priority(hw, value, value, value, value, value, value); pr_info("Tx queue select: 0x%02x\n", queue_sel); } static void _rtl92cu_init_chipn_two_out_ep_priority(struct ieee80211_hw *hw, u8 queue_sel) { u16 beq, bkq, viq, voq, mgtq, hiq; u16 valuehi; u16 valuelow; switch (queue_sel) { default: WARN_ON(1); fallthrough; case (TX_SELE_HQ | TX_SELE_LQ): valuehi = QUEUE_HIGH; valuelow = QUEUE_LOW; break; case (TX_SELE_NQ | TX_SELE_LQ): valuehi = QUEUE_NORMAL; valuelow = QUEUE_LOW; break; case (TX_SELE_HQ | TX_SELE_NQ): valuehi = QUEUE_HIGH; valuelow = QUEUE_NORMAL; break; } beq = valuelow; bkq = valuelow; viq = valuehi; voq = valuehi; mgtq = valuehi; hiq = valuehi; _rtl92c_init_chipn_reg_priority(hw, beq, bkq, viq, voq, mgtq, hiq); pr_info("Tx queue select: 0x%02x\n", queue_sel); } static void _rtl92cu_init_chipn_three_out_ep_priority(struct ieee80211_hw *hw, u8 queue_sel) { u16 beq, bkq, viq, voq, mgtq, hiq; beq = QUEUE_LOW; bkq = QUEUE_LOW; viq = QUEUE_NORMAL; voq = QUEUE_HIGH; mgtq = QUEUE_HIGH; hiq = QUEUE_HIGH; _rtl92c_init_chipn_reg_priority(hw, beq, bkq, viq, voq, mgtq, hiq); pr_info("Tx queue select :0x%02x..\n", queue_sel); } static void _rtl92cu_init_chipn_queue_priority(struct ieee80211_hw *hw, u8 out_ep_num, u8 queue_sel) { switch (out_ep_num) { case 1: _rtl92cu_init_chipn_one_out_ep_priority(hw, queue_sel); break; case 2: _rtl92cu_init_chipn_two_out_ep_priority(hw, queue_sel); break; case 3: _rtl92cu_init_chipn_three_out_ep_priority(hw, queue_sel); break; default: WARN_ON(1); /* Shall not reach here! */ break; } } static void _rtl92cu_init_chipt_queue_priority(struct ieee80211_hw *hw, u8 out_ep_num, u8 queue_sel) { u8 hq_sele = 0; struct rtl_priv *rtlpriv = rtl_priv(hw); switch (out_ep_num) { case 2: /* (TX_SELE_HQ|TX_SELE_LQ) */ hq_sele = HQSEL_VOQ | HQSEL_VIQ | HQSEL_MGTQ | HQSEL_HIQ; break; case 1: if (TX_SELE_LQ == queue_sel) { /* map all endpoint to Low queue */ hq_sele = 0; } else if (TX_SELE_HQ == queue_sel) { /* map all endpoint to High queue */ hq_sele = HQSEL_VOQ | HQSEL_VIQ | HQSEL_BEQ | HQSEL_BKQ | HQSEL_MGTQ | HQSEL_HIQ; } break; default: WARN_ON(1); /* Shall not reach here! */ break; } rtl_write_byte(rtlpriv, (REG_TRXDMA_CTRL+1), hq_sele); pr_info("Tx queue select :0x%02x..\n", hq_sele); } static void _rtl92cu_init_queue_priority(struct ieee80211_hw *hw, u8 out_ep_num, u8 queue_sel) { struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); if (IS_NORMAL_CHIP(rtlhal->version)) _rtl92cu_init_chipn_queue_priority(hw, out_ep_num, queue_sel); else _rtl92cu_init_chipt_queue_priority(hw, out_ep_num, queue_sel); } static void _rtl92cu_init_wmac_setting(struct ieee80211_hw *hw) { u16 value16; u32 value32; struct rtl_priv *rtlpriv = rtl_priv(hw); value32 = (RCR_APM | RCR_AM | RCR_ADF | RCR_AB | RCR_APPFCS | RCR_APP_ICV | RCR_AMF | RCR_HTC_LOC_CTRL | RCR_APP_MIC | RCR_APP_PHYSTS | RCR_ACRC32); rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, (u8 *)(&value32)); /* Accept all multicast address */ rtl_write_dword(rtlpriv, REG_MAR, 0xFFFFFFFF); rtl_write_dword(rtlpriv, REG_MAR + 4, 0xFFFFFFFF); /* Accept all management frames */ value16 = 0xFFFF; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_MGT_FILTER, (u8 *)(&value16)); /* Reject all control frame - default value is 0 */ value16 = 0x0; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CTRL_FILTER, (u8 *)(&value16)); /* Accept all data frames */ value16 = 0xFFFF; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_DATA_FILTER, (u8 *)(&value16)); } static void _rtl92cu_init_beacon_parameters(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtlpriv); rtl_write_word(rtlpriv, REG_BCN_CTRL, 0x1010); /* TODO: Remove these magic number */ rtl_write_word(rtlpriv, REG_TBTT_PROHIBIT, 0x6404); rtl_write_byte(rtlpriv, REG_DRVERLYINT, DRIVER_EARLY_INT_TIME); rtl_write_byte(rtlpriv, REG_BCNDMATIM, BCN_DMA_ATIME_INT_TIME); /* Change beacon AIFS to the largest number * beacause test chip does not contension before sending beacon. */ if (IS_NORMAL_CHIP(rtlhal->version)) rtl_write_word(rtlpriv, REG_BCNTCFG, 0x660F); else rtl_write_word(rtlpriv, REG_BCNTCFG, 0x66FF); } static int _rtl92cu_init_mac(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw); struct rtl_usb *rtlusb = rtl_usbdev(usb_priv); int err = 0; u32 boundary = TX_PAGE_BOUNDARY; u8 out_ep_nums = rtlusb->out_ep_nums; u8 queue_sel = rtlusb->out_queue_sel; err = _rtl92cu_init_power_on(hw); if (err) { pr_err("Failed to init power on!\n"); return err; } if (!rtl92c_init_llt_table(hw, boundary)) { pr_err("Failed to init LLT Table!\n"); return -EINVAL; } _rtl92cu_init_queue_reserved_page(hw, out_ep_nums, queue_sel); _rtl92c_init_trx_buffer(hw); _rtl92cu_init_queue_priority(hw, out_ep_nums, queue_sel); /* Get Rx PHY status in order to report RSSI and others. */ rtl92c_init_driver_info_size(hw, RTL92C_DRIVER_INFO_SIZE); rtl92c_init_interrupt(hw); rtl92c_init_network_type(hw); _rtl92cu_init_wmac_setting(hw); rtl92c_init_adaptive_ctrl(hw); rtl92c_init_edca(hw); rtl92c_init_rate_fallback(hw); rtl92c_init_retry_function(hw); rtlpriv->cfg->ops->set_bw_mode(hw, NL80211_CHAN_HT20); rtl92c_set_min_space(hw, IS_92C_SERIAL(rtlhal->version)); _rtl92cu_init_beacon_parameters(hw); rtl92c_init_ampdu_aggregation(hw); rtl92c_init_beacon_max_error(hw); return err; } void rtl92cu_enable_hw_security_config(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 sec_reg_value = 0x0; struct rtl_hal *rtlhal = rtl_hal(rtlpriv); rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "PairwiseEncAlgorithm = %d GroupEncAlgorithm = %d\n", rtlpriv->sec.pairwise_enc_algorithm, rtlpriv->sec.group_enc_algorithm); if (rtlpriv->cfg->mod_params->sw_crypto || rtlpriv->sec.use_sw_sec) { rtl_dbg(rtlpriv, COMP_SEC, DBG_DMESG, "not open sw encryption\n"); return; } sec_reg_value = SCR_TXENCENABLE | SCR_RXDECENABLE; if (rtlpriv->sec.use_defaultkey) { sec_reg_value |= SCR_TXUSEDK; sec_reg_value |= SCR_RXUSEDK; } if (IS_NORMAL_CHIP(rtlhal->version)) sec_reg_value |= (SCR_RXBCUSEDK | SCR_TXBCUSEDK); rtl_write_byte(rtlpriv, REG_CR + 1, 0x02); rtl_dbg(rtlpriv, COMP_SEC, DBG_LOUD, "The SECR-value %x\n", sec_reg_value); rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_WPA_CONFIG, &sec_reg_value); } static void _rtl92cu_hw_configure(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw)); /* To Fix MAC loopback mode fail. */ rtl_write_byte(rtlpriv, REG_LDOHCI12_CTRL, 0x0f); rtl_write_byte(rtlpriv, 0x15, 0xe9); /* HW SEQ CTRL */ /* set 0x0 to 0xFF by tynli. Default enable HW SEQ NUM. */ rtl_write_byte(rtlpriv, REG_HWSEQ_CTRL, 0xFF); /* fixed USB interface interference issue */ rtl_write_byte(rtlpriv, 0xfe40, 0xe0); rtl_write_byte(rtlpriv, 0xfe41, 0x8d); rtl_write_byte(rtlpriv, 0xfe42, 0x80); rtlusb->reg_bcn_ctrl_val = 0x18; rtl_write_byte(rtlpriv, REG_BCN_CTRL, (u8)rtlusb->reg_bcn_ctrl_val); } static void _initpabias(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); u8 pa_setting; /* FIXED PA current issue */ pa_setting = efuse_read_1byte(hw, 0x1FA); if (!(pa_setting & BIT(0))) { rtl_set_rfreg(hw, RF90_PATH_A, 0x15, 0x0FFFFF, 0x0F406); rtl_set_rfreg(hw, RF90_PATH_A, 0x15, 0x0FFFFF, 0x4F406); rtl_set_rfreg(hw, RF90_PATH_A, 0x15, 0x0FFFFF, 0x8F406); rtl_set_rfreg(hw, RF90_PATH_A, 0x15, 0x0FFFFF, 0xCF406); } if (!(pa_setting & BIT(1)) && IS_NORMAL_CHIP(rtlhal->version) && IS_92C_SERIAL(rtlhal->version)) { rtl_set_rfreg(hw, RF90_PATH_B, 0x15, 0x0FFFFF, 0x0F406); rtl_set_rfreg(hw, RF90_PATH_B, 0x15, 0x0FFFFF, 0x4F406); rtl_set_rfreg(hw, RF90_PATH_B, 0x15, 0x0FFFFF, 0x8F406); rtl_set_rfreg(hw, RF90_PATH_B, 0x15, 0x0FFFFF, 0xCF406); } if (!(pa_setting & BIT(4))) { pa_setting = rtl_read_byte(rtlpriv, 0x16); pa_setting &= 0x0F; rtl_write_byte(rtlpriv, 0x16, pa_setting | 0x90); } } int rtl92cu_hw_init(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_phy *rtlphy = &(rtlpriv->phy); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); int err = 0; unsigned long flags; /* As this function can take a very long time (up to 350 ms) * and can be called with irqs disabled, reenable the irqs * to let the other devices continue being serviced. * * It is safe doing so since our own interrupts will only be enabled * in a subsequent step. */ local_save_flags(flags); local_irq_enable(); rtlhal->fw_ready = false; rtlhal->hw_type = HARDWARE_TYPE_RTL8192CU; err = _rtl92cu_init_mac(hw); if (err) { pr_err("init mac failed!\n"); goto exit; } err = rtl92c_download_fw(hw); if (err) { rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "Failed to download FW. Init HW without FW now..\n"); err = 1; goto exit; } rtlhal->fw_ready = true; rtlhal->last_hmeboxnum = 0; /* h2c */ _rtl92cu_phy_param_tab_init(hw); rtl92cu_phy_mac_config(hw); rtl92cu_phy_bb_config(hw); rtlphy->rf_mode = RF_OP_BY_SW_3WIRE; rtl92c_phy_rf_config(hw); if (IS_VENDOR_UMC_A_CUT(rtlhal->version) && !IS_92C_SERIAL(rtlhal->version)) { rtl_set_rfreg(hw, RF90_PATH_A, RF_RX_G1, MASKDWORD, 0x30255); rtl_set_rfreg(hw, RF90_PATH_A, RF_RX_G2, MASKDWORD, 0x50a00); } rtlphy->rfreg_chnlval[0] = rtl_get_rfreg(hw, (enum radio_path)0, RF_CHNLBW, RFREG_OFFSET_MASK); rtlphy->rfreg_chnlval[1] = rtl_get_rfreg(hw, (enum radio_path)1, RF_CHNLBW, RFREG_OFFSET_MASK); rtl92cu_bb_block_on(hw); rtl_cam_reset_all_entry(hw); rtl92cu_enable_hw_security_config(hw); ppsc->rfpwr_state = ERFON; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr); if (ppsc->rfpwr_state == ERFON) { rtl92c_phy_set_rfpath_switch(hw, 1); if (rtlphy->iqk_initialized) { rtl92c_phy_iq_calibrate(hw, true); } else { rtl92c_phy_iq_calibrate(hw, false); rtlphy->iqk_initialized = true; } rtl92c_dm_check_txpower_tracking(hw); rtl92c_phy_lc_calibrate(hw); } _rtl92cu_hw_configure(hw); _initpabias(hw); rtl92c_dm_init(hw); exit: local_irq_disable(); local_irq_restore(flags); return err; } static void disable_rfafeandresetbb(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); /************************************** a. TXPAUSE 0x522[7:0] = 0xFF Pause MAC TX queue b. RF path 0 offset 0x00 = 0x00 disable RF c. APSD_CTRL 0x600[7:0] = 0x40 d. SYS_FUNC_EN 0x02[7:0] = 0x16 reset BB state machine e. SYS_FUNC_EN 0x02[7:0] = 0x14 reset BB state machine ***************************************/ u8 erfpath = 0, value8 = 0; rtl_write_byte(rtlpriv, REG_TXPAUSE, 0xFF); rtl_set_rfreg(hw, (enum radio_path)erfpath, 0x0, MASKBYTE0, 0x0); value8 |= APSDOFF; rtl_write_byte(rtlpriv, REG_APSD_CTRL, value8); /*0x40*/ value8 = 0; value8 |= (FEN_USBD | FEN_USBA | FEN_BB_GLB_RSTN); rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN, value8);/*0x16*/ value8 &= (~FEN_BB_GLB_RSTN); rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN, value8); /*0x14*/ } static void _resetdigitalprocedure1(struct ieee80211_hw *hw, bool withouthwsm) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); if (rtlhal->fw_version <= 0x20) { /***************************** f. MCUFWDL 0x80[7:0]=0 reset MCU ready status g. SYS_FUNC_EN 0x02[10]= 0 reset MCU reg, (8051 reset) h. SYS_FUNC_EN 0x02[15-12]= 5 reset MAC reg, DCORE i. SYS_FUNC_EN 0x02[10]= 1 enable MCU reg, (8051 enable) ******************************/ u16 valu16 = 0; rtl_write_byte(rtlpriv, REG_MCUFWDL, 0); valu16 = rtl_read_word(rtlpriv, REG_SYS_FUNC_EN); rtl_write_word(rtlpriv, REG_SYS_FUNC_EN, (valu16 & (~FEN_CPUEN))); /* reset MCU ,8051 */ valu16 = rtl_read_word(rtlpriv, REG_SYS_FUNC_EN)&0x0FFF; rtl_write_word(rtlpriv, REG_SYS_FUNC_EN, (valu16 | (FEN_HWPDN|FEN_ELDR))); /* reset MAC */ valu16 = rtl_read_word(rtlpriv, REG_SYS_FUNC_EN); rtl_write_word(rtlpriv, REG_SYS_FUNC_EN, (valu16 | FEN_CPUEN)); /* enable MCU ,8051 */ } else { u8 retry_cnts = 0; /* IF fw in RAM code, do reset */ if (rtl_read_byte(rtlpriv, REG_MCUFWDL) & BIT(1)) { /* reset MCU ready status */ rtl_write_byte(rtlpriv, REG_MCUFWDL, 0); /* 8051 reset by self */ rtl_write_byte(rtlpriv, REG_HMETFR+3, 0x20); while ((retry_cnts++ < 100) && (FEN_CPUEN & rtl_read_word(rtlpriv, REG_SYS_FUNC_EN))) { udelay(50); } if (retry_cnts >= 100) { pr_err("8051 reset failed!.........................\n"); /* if 8051 reset fail, reset MAC. */ rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN + 1, 0x50); udelay(100); } } /* Reset MAC and Enable 8051 */ rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN + 1, 0x54); rtl_write_byte(rtlpriv, REG_MCUFWDL, 0); } if (withouthwsm) { /***************************** Without HW auto state machine g.SYS_CLKR 0x08[15:0] = 0x30A3 disable MAC clock h.AFE_PLL_CTRL 0x28[7:0] = 0x80 disable AFE PLL i.AFE_XTAL_CTRL 0x24[15:0] = 0x880F gated AFE DIG_CLOCK j.SYS_ISu_CTRL 0x00[7:0] = 0xF9 isolated digital to PON ******************************/ rtl_write_word(rtlpriv, REG_SYS_CLKR, 0x70A3); rtl_write_byte(rtlpriv, REG_AFE_PLL_CTRL, 0x80); rtl_write_word(rtlpriv, REG_AFE_XTAL_CTRL, 0x880F); rtl_write_byte(rtlpriv, REG_SYS_ISO_CTRL, 0xF9); } } static void _resetdigitalprocedure2(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); /***************************** k. SYS_FUNC_EN 0x03[7:0] = 0x44 disable ELDR runction l. SYS_CLKR 0x08[15:0] = 0x3083 disable ELDR clock m. SYS_ISO_CTRL 0x01[7:0] = 0x83 isolated ELDR to PON ******************************/ rtl_write_word(rtlpriv, REG_SYS_CLKR, 0x70A3); rtl_write_byte(rtlpriv, REG_SYS_ISO_CTRL+1, 0x82); } static void _disablegpio(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); /*************************************** j. GPIO_PIN_CTRL 0x44[31:0]=0x000 k. Value = GPIO_PIN_CTRL[7:0] l. GPIO_PIN_CTRL 0x44[31:0] = 0x00FF0000 | (value <<8); write ext PIN level m. GPIO_MUXCFG 0x42 [15:0] = 0x0780 n. LEDCFG 0x4C[15:0] = 0x8080 ***************************************/ u8 value8; u16 value16; u32 value32; /* 1. Disable GPIO[7:0] */ rtl_write_word(rtlpriv, REG_GPIO_PIN_CTRL+2, 0x0000); value32 = rtl_read_dword(rtlpriv, REG_GPIO_PIN_CTRL) & 0xFFFF00FF; value8 = (u8)(value32&0x000000FF); value32 |= ((value8<<8) | 0x00FF0000); rtl_write_dword(rtlpriv, REG_GPIO_PIN_CTRL, value32); /* 2. Disable GPIO[10:8] */ rtl_write_byte(rtlpriv, REG_GPIO_MUXCFG+3, 0x00); value16 = rtl_read_word(rtlpriv, REG_GPIO_MUXCFG+2) & 0xFF0F; value8 = (u8)(value16&0x000F); value16 |= ((value8<<4) | 0x0780); rtl_write_word(rtlpriv, REG_GPIO_PIN_CTRL+2, value16); /* 3. Disable LED0 & 1 */ rtl_write_word(rtlpriv, REG_LEDCFG0, 0x8080); } static void disable_analog(struct ieee80211_hw *hw, bool withouthwsm) { struct rtl_priv *rtlpriv = rtl_priv(hw); u16 value16 = 0; u8 value8 = 0; if (withouthwsm) { /***************************** n. LDOA15_CTRL 0x20[7:0] = 0x04 disable A15 power o. LDOV12D_CTRL 0x21[7:0] = 0x54 disable digital core power r. When driver call disable, the ASIC will turn off remaining clock automatically ******************************/ rtl_write_byte(rtlpriv, REG_LDOA15_CTRL, 0x04); value8 = rtl_read_byte(rtlpriv, REG_LDOV12D_CTRL); value8 &= (~LDV12_EN); rtl_write_byte(rtlpriv, REG_LDOV12D_CTRL, value8); } /***************************** h. SPS0_CTRL 0x11[7:0] = 0x23 enter PFM mode i. APS_FSMCO 0x04[15:0] = 0x4802 set USB suspend ******************************/ rtl_write_byte(rtlpriv, REG_SPS0_CTRL, 0x23); value16 |= (APDM_HOST | AFSM_HSUS | PFM_ALDN); rtl_write_word(rtlpriv, REG_APS_FSMCO, (u16)value16); rtl_write_byte(rtlpriv, REG_RSV_CTRL, 0x0E); } static void carddisable_hwsm(struct ieee80211_hw *hw) { /* ==== RF Off Sequence ==== */ disable_rfafeandresetbb(hw); /* ==== Reset digital sequence ====== */ _resetdigitalprocedure1(hw, false); /* ==== Pull GPIO PIN to balance level and LED control ====== */ _disablegpio(hw); /* ==== Disable analog sequence === */ disable_analog(hw, false); } static void carddisablewithout_hwsm(struct ieee80211_hw *hw) { /*==== RF Off Sequence ==== */ disable_rfafeandresetbb(hw); /* ==== Reset digital sequence ====== */ _resetdigitalprocedure1(hw, true); /* ==== Pull GPIO PIN to balance level and LED control ====== */ _disablegpio(hw); /* ==== Reset digital sequence ====== */ _resetdigitalprocedure2(hw); /* ==== Disable analog sequence === */ disable_analog(hw, true); } static void _rtl92cu_set_bcn_ctrl_reg(struct ieee80211_hw *hw, u8 set_bits, u8 clear_bits) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw)); rtlusb->reg_bcn_ctrl_val |= set_bits; rtlusb->reg_bcn_ctrl_val &= ~clear_bits; rtl_write_byte(rtlpriv, REG_BCN_CTRL, (u8)rtlusb->reg_bcn_ctrl_val); } static void _rtl92cu_stop_tx_beacon(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtlpriv); u8 tmp1byte = 0; if (IS_NORMAL_CHIP(rtlhal->version)) { tmp1byte = rtl_read_byte(rtlpriv, REG_FWHW_TXQ_CTRL + 2); rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL + 2, tmp1byte & (~BIT(6))); rtl_write_byte(rtlpriv, REG_TBTT_PROHIBIT + 1, 0x64); tmp1byte = rtl_read_byte(rtlpriv, REG_TBTT_PROHIBIT + 2); tmp1byte &= ~(BIT(0)); rtl_write_byte(rtlpriv, REG_TBTT_PROHIBIT + 2, tmp1byte); } else { rtl_write_byte(rtlpriv, REG_TXPAUSE, rtl_read_byte(rtlpriv, REG_TXPAUSE) | BIT(6)); } } static void _rtl92cu_resume_tx_beacon(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtlpriv); u8 tmp1byte = 0; if (IS_NORMAL_CHIP(rtlhal->version)) { tmp1byte = rtl_read_byte(rtlpriv, REG_FWHW_TXQ_CTRL + 2); rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL + 2, tmp1byte | BIT(6)); rtl_write_byte(rtlpriv, REG_TBTT_PROHIBIT + 1, 0xff); tmp1byte = rtl_read_byte(rtlpriv, REG_TBTT_PROHIBIT + 2); tmp1byte |= BIT(0); rtl_write_byte(rtlpriv, REG_TBTT_PROHIBIT + 2, tmp1byte); } else { rtl_write_byte(rtlpriv, REG_TXPAUSE, rtl_read_byte(rtlpriv, REG_TXPAUSE) & (~BIT(6))); } } static void _rtl92cu_enable_bcn_sub_func(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtlpriv); if (IS_NORMAL_CHIP(rtlhal->version)) _rtl92cu_set_bcn_ctrl_reg(hw, 0, BIT(1)); else _rtl92cu_set_bcn_ctrl_reg(hw, 0, BIT(4)); } static void _rtl92cu_disable_bcn_sub_func(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtlpriv); if (IS_NORMAL_CHIP(rtlhal->version)) _rtl92cu_set_bcn_ctrl_reg(hw, BIT(1), 0); else _rtl92cu_set_bcn_ctrl_reg(hw, BIT(4), 0); } static int _rtl92cu_set_media_status(struct ieee80211_hw *hw, enum nl80211_iftype type) { struct rtl_priv *rtlpriv = rtl_priv(hw); u8 bt_msr = rtl_read_byte(rtlpriv, MSR); enum led_ctl_mode ledaction = LED_CTL_NO_LINK; bt_msr &= 0xfc; if (type == NL80211_IFTYPE_UNSPECIFIED || type == NL80211_IFTYPE_STATION) { _rtl92cu_stop_tx_beacon(hw); _rtl92cu_enable_bcn_sub_func(hw); } else if (type == NL80211_IFTYPE_ADHOC || type == NL80211_IFTYPE_AP) { _rtl92cu_resume_tx_beacon(hw); _rtl92cu_disable_bcn_sub_func(hw); } else { rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "Set HW_VAR_MEDIA_STATUS:No such media status(%x)\n", type); } switch (type) { case NL80211_IFTYPE_UNSPECIFIED: bt_msr |= MSR_NOLINK; ledaction = LED_CTL_LINK; rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Set Network type to NO LINK!\n"); break; case NL80211_IFTYPE_ADHOC: bt_msr |= MSR_ADHOC; rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Set Network type to Ad Hoc!\n"); break; case NL80211_IFTYPE_STATION: bt_msr |= MSR_INFRA; ledaction = LED_CTL_LINK; rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Set Network type to STA!\n"); break; case NL80211_IFTYPE_AP: bt_msr |= MSR_AP; rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Set Network type to AP!\n"); break; default: pr_err("Network type %d not supported!\n", type); goto error_out; } rtl_write_byte(rtlpriv, MSR, bt_msr); rtlpriv->cfg->ops->led_control(hw, ledaction); if ((bt_msr & MSR_MASK) == MSR_AP) rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x00); else rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x66); return 0; error_out: return 1; } void rtl92cu_card_disable(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw)); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); enum nl80211_iftype opmode; mac->link_state = MAC80211_NOLINK; opmode = NL80211_IFTYPE_UNSPECIFIED; _rtl92cu_set_media_status(hw, opmode); rtlpriv->cfg->ops->led_control(hw, LED_CTL_POWER_OFF); RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC); if (rtlusb->disablehwsm) carddisable_hwsm(hw); else carddisablewithout_hwsm(hw); /* after power off we should do iqk again */ rtlpriv->phy.iqk_initialized = false; } void rtl92cu_set_check_bssid(struct ieee80211_hw *hw, bool check_bssid) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_hal *rtlhal = rtl_hal(rtlpriv); u32 reg_rcr; if (rtlpriv->psc.rfpwr_state != ERFON) return; rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *)(®_rcr)); if (check_bssid) { u8 tmp; if (IS_NORMAL_CHIP(rtlhal->version)) { reg_rcr |= (RCR_CBSSID_DATA | RCR_CBSSID_BCN); tmp = BIT(4); } else { reg_rcr |= RCR_CBSSID; tmp = BIT(4) | BIT(5); } rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, (u8 *) (®_rcr)); _rtl92cu_set_bcn_ctrl_reg(hw, 0, tmp); } else { u8 tmp; if (IS_NORMAL_CHIP(rtlhal->version)) { reg_rcr &= ~(RCR_CBSSID_DATA | RCR_CBSSID_BCN); tmp = BIT(4); } else { reg_rcr &= ~RCR_CBSSID; tmp = BIT(4) | BIT(5); } reg_rcr &= (~(RCR_CBSSID_DATA | RCR_CBSSID_BCN)); rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, (u8 *) (®_rcr)); _rtl92cu_set_bcn_ctrl_reg(hw, tmp, 0); } } /*========================================================================== */ int rtl92cu_set_network_type(struct ieee80211_hw *hw, enum nl80211_iftype type) { struct rtl_priv *rtlpriv = rtl_priv(hw); if (_rtl92cu_set_media_status(hw, type)) return -EOPNOTSUPP; if (rtlpriv->mac80211.link_state == MAC80211_LINKED) { if (type != NL80211_IFTYPE_AP) rtl92cu_set_check_bssid(hw, true); } else { rtl92cu_set_check_bssid(hw, false); } return 0; } static void _beacon_function_enable(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); _rtl92cu_set_bcn_ctrl_reg(hw, (BIT(4) | BIT(3) | BIT(1)), 0x00); rtl_write_byte(rtlpriv, REG_RD_CTRL+1, 0x6F); } void rtl92cu_set_beacon_related_registers(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); u16 bcn_interval, atim_window; u32 value32; bcn_interval = mac->beacon_interval; atim_window = 2; /*FIX MERGE */ rtl_write_word(rtlpriv, REG_ATIMWND, atim_window); rtl_write_word(rtlpriv, REG_BCN_INTERVAL, bcn_interval); _rtl92cu_init_beacon_parameters(hw); rtl_write_byte(rtlpriv, REG_SLOT, 0x09); /* * Force beacon frame transmission even after receiving beacon frame * from other ad hoc STA * * * Reset TSF Timer to zero, added by Roger. 2008.06.24 */ value32 = rtl_read_dword(rtlpriv, REG_TCR); value32 &= ~TSFRST; rtl_write_dword(rtlpriv, REG_TCR, value32); value32 |= TSFRST; rtl_write_dword(rtlpriv, REG_TCR, value32); rtl_dbg(rtlpriv, COMP_INIT | COMP_BEACON, DBG_LOUD, "SetBeaconRelatedRegisters8192CUsb(): Set TCR(%x)\n", value32); /* TODO: Modify later (Find the right parameters) * NOTE: Fix test chip's bug (about contention windows's randomness) */ if ((mac->opmode == NL80211_IFTYPE_ADHOC) || (mac->opmode == NL80211_IFTYPE_MESH_POINT) || (mac->opmode == NL80211_IFTYPE_AP)) { rtl_write_byte(rtlpriv, REG_RXTSF_OFFSET_CCK, 0x50); rtl_write_byte(rtlpriv, REG_RXTSF_OFFSET_OFDM, 0x50); } _beacon_function_enable(hw); } void rtl92cu_set_beacon_interval(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); u16 bcn_interval = mac->beacon_interval; rtl_dbg(rtlpriv, COMP_BEACON, DBG_DMESG, "beacon_interval:%d\n", bcn_interval); rtl_write_word(rtlpriv, REG_BCN_INTERVAL, bcn_interval); } void rtl92cu_update_interrupt_mask(struct ieee80211_hw *hw, u32 add_msr, u32 rm_msr) { } void rtl92cu_get_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); switch (variable) { case HW_VAR_RCR: *((u32 *)(val)) = mac->rx_conf; break; case HW_VAR_RF_STATE: *((enum rf_pwrstate *)(val)) = ppsc->rfpwr_state; break; case HW_VAR_FWLPS_RF_ON:{ enum rf_pwrstate rfstate; u32 val_rcr; rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RF_STATE, (u8 *)(&rfstate)); if (rfstate == ERFOFF) { *((bool *) (val)) = true; } else { val_rcr = rtl_read_dword(rtlpriv, REG_RCR); val_rcr &= 0x00070000; if (val_rcr) *((bool *) (val)) = false; else *((bool *) (val)) = true; } break; } case HW_VAR_FW_PSMODE_STATUS: *((bool *) (val)) = ppsc->fw_current_inpsmode; break; case HW_VAR_CORRECT_TSF:{ u64 tsf; u32 *ptsf_low = (u32 *)&tsf; u32 *ptsf_high = ((u32 *)&tsf) + 1; *ptsf_high = rtl_read_dword(rtlpriv, (REG_TSFTR + 4)); *ptsf_low = rtl_read_dword(rtlpriv, REG_TSFTR); *((u64 *)(val)) = tsf; break; } case HW_VAR_MGT_FILTER: *((u16 *) (val)) = rtl_read_word(rtlpriv, REG_RXFLTMAP0); break; case HW_VAR_CTRL_FILTER: *((u16 *) (val)) = rtl_read_word(rtlpriv, REG_RXFLTMAP1); break; case HW_VAR_DATA_FILTER: *((u16 *) (val)) = rtl_read_word(rtlpriv, REG_RXFLTMAP2); break; case HAL_DEF_WOWLAN: break; default: pr_err("switch case %#x not processed\n", variable); break; } } static bool usb_cmd_send_packet(struct ieee80211_hw *hw, struct sk_buff *skb) { /* Currently nothing happens here. * Traffic stops after some seconds in WPA2 802.11n mode. * Maybe because rtl8192cu chip should be set from here? * If I understand correctly, the realtek vendor driver sends some urbs * if its "here". * * This is maybe necessary: * rtlpriv->cfg->ops->fill_tx_cmddesc(hw, buffer, skb); */ dev_kfree_skb(skb); return true; } void rtl92cu_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); u8 idx = 0; switch (variable) { case HW_VAR_ETHER_ADDR:{ for (idx = 0; idx < ETH_ALEN; idx++) { rtl_write_byte(rtlpriv, (REG_MACID + idx), val[idx]); } break; } case HW_VAR_BASIC_RATE:{ u16 rate_cfg = ((u16 *) val)[0]; u8 rate_index = 0; rate_cfg &= 0x15f; /* TODO */ /* if (mac->current_network.vender == HT_IOT_PEER_CISCO * && ((rate_cfg & 0x150) == 0)) { * rate_cfg |= 0x010; * } */ rate_cfg |= 0x01; rtl_write_byte(rtlpriv, REG_RRSR, rate_cfg & 0xff); rtl_write_byte(rtlpriv, REG_RRSR + 1, (rate_cfg >> 8) & 0xff); while (rate_cfg > 0x1) { rate_cfg >>= 1; rate_index++; } rtl_write_byte(rtlpriv, REG_INIRTS_RATE_SEL, rate_index); break; } case HW_VAR_BSSID:{ for (idx = 0; idx < ETH_ALEN; idx++) { rtl_write_byte(rtlpriv, (REG_BSSID + idx), val[idx]); } break; } case HW_VAR_SIFS:{ rtl_write_byte(rtlpriv, REG_SIFS_CCK + 1, val[0]); rtl_write_byte(rtlpriv, REG_SIFS_OFDM + 1, val[1]); rtl_write_byte(rtlpriv, REG_SPEC_SIFS + 1, val[0]); rtl_write_byte(rtlpriv, REG_MAC_SPEC_SIFS + 1, val[0]); rtl_write_byte(rtlpriv, REG_R2T_SIFS+1, val[0]); rtl_write_byte(rtlpriv, REG_T2T_SIFS+1, val[0]); rtl_dbg(rtlpriv, COMP_MLME, DBG_LOUD, "HW_VAR_SIFS\n"); break; } case HW_VAR_SLOT_TIME:{ u8 e_aci; rtl_write_byte(rtlpriv, REG_SLOT, val[0]); rtl_dbg(rtlpriv, COMP_MLME, DBG_LOUD, "HW_VAR_SLOT_TIME %x\n", val[0]); for (e_aci = 0; e_aci < AC_MAX; e_aci++) rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AC_PARAM, &e_aci); break; } case HW_VAR_ACK_PREAMBLE:{ u8 reg_tmp; u8 short_preamble = (bool)*val; reg_tmp = 0; if (short_preamble) reg_tmp |= 0x80; rtl_write_byte(rtlpriv, REG_RRSR + 2, reg_tmp); break; } case HW_VAR_AMPDU_MIN_SPACE:{ u8 min_spacing_to_set; u8 sec_min_space; min_spacing_to_set = *val; if (min_spacing_to_set <= 7) { switch (rtlpriv->sec.pairwise_enc_algorithm) { case NO_ENCRYPTION: case AESCCMP_ENCRYPTION: sec_min_space = 0; break; case WEP40_ENCRYPTION: case WEP104_ENCRYPTION: case TKIP_ENCRYPTION: sec_min_space = 6; break; default: sec_min_space = 7; break; } if (min_spacing_to_set < sec_min_space) min_spacing_to_set = sec_min_space; mac->min_space_cfg = ((mac->min_space_cfg & 0xf8) | min_spacing_to_set); *val = min_spacing_to_set; rtl_dbg(rtlpriv, COMP_MLME, DBG_LOUD, "Set HW_VAR_AMPDU_MIN_SPACE: %#x\n", mac->min_space_cfg); rtl_write_byte(rtlpriv, REG_AMPDU_MIN_SPACE, mac->min_space_cfg); } break; } case HW_VAR_SHORTGI_DENSITY:{ u8 density_to_set; density_to_set = *val; density_to_set &= 0x1f; mac->min_space_cfg &= 0x07; mac->min_space_cfg |= (density_to_set << 3); rtl_dbg(rtlpriv, COMP_MLME, DBG_LOUD, "Set HW_VAR_SHORTGI_DENSITY: %#x\n", mac->min_space_cfg); rtl_write_byte(rtlpriv, REG_AMPDU_MIN_SPACE, mac->min_space_cfg); break; } case HW_VAR_AMPDU_FACTOR:{ u8 regtoset_normal[4] = {0x41, 0xa8, 0x72, 0xb9}; u8 factor_toset; u8 *p_regtoset = NULL; u8 index = 0; p_regtoset = regtoset_normal; factor_toset = *val; if (factor_toset <= 3) { factor_toset = (1 << (factor_toset + 2)); if (factor_toset > 0xf) factor_toset = 0xf; for (index = 0; index < 4; index++) { if ((p_regtoset[index] & 0xf0) > (factor_toset << 4)) p_regtoset[index] = (p_regtoset[index] & 0x0f) | (factor_toset << 4); if ((p_regtoset[index] & 0x0f) > factor_toset) p_regtoset[index] = (p_regtoset[index] & 0xf0) | (factor_toset); rtl_write_byte(rtlpriv, (REG_AGGLEN_LMT + index), p_regtoset[index]); } rtl_dbg(rtlpriv, COMP_MLME, DBG_LOUD, "Set HW_VAR_AMPDU_FACTOR: %#x\n", factor_toset); } break; } case HW_VAR_AC_PARAM:{ u8 e_aci = *val; u32 u4b_ac_param; u16 cw_min = le16_to_cpu(mac->ac[e_aci].cw_min); u16 cw_max = le16_to_cpu(mac->ac[e_aci].cw_max); u16 tx_op = le16_to_cpu(mac->ac[e_aci].tx_op); u4b_ac_param = (u32) mac->ac[e_aci].aifs; u4b_ac_param |= (u32) ((cw_min & 0xF) << AC_PARAM_ECW_MIN_OFFSET); u4b_ac_param |= (u32) ((cw_max & 0xF) << AC_PARAM_ECW_MAX_OFFSET); u4b_ac_param |= (u32) tx_op << AC_PARAM_TXOP_OFFSET; rtl_dbg(rtlpriv, COMP_MLME, DBG_LOUD, "queue:%x, ac_param:%x\n", e_aci, u4b_ac_param); switch (e_aci) { case AC1_BK: rtl_write_dword(rtlpriv, REG_EDCA_BK_PARAM, u4b_ac_param); break; case AC0_BE: rtl_write_dword(rtlpriv, REG_EDCA_BE_PARAM, u4b_ac_param); break; case AC2_VI: rtl_write_dword(rtlpriv, REG_EDCA_VI_PARAM, u4b_ac_param); break; case AC3_VO: rtl_write_dword(rtlpriv, REG_EDCA_VO_PARAM, u4b_ac_param); break; default: WARN_ONCE(true, "rtl8192cu: invalid aci: %d !\n", e_aci); break; } break; } case HW_VAR_RCR:{ rtl_write_dword(rtlpriv, REG_RCR, ((u32 *) (val))[0]); mac->rx_conf = ((u32 *) (val))[0]; rtl_dbg(rtlpriv, COMP_RECV, DBG_DMESG, "### Set RCR(0x%08x) ###\n", mac->rx_conf); break; } case HW_VAR_RETRY_LIMIT:{ u8 retry_limit = val[0]; rtl_write_word(rtlpriv, REG_RL, retry_limit << RETRY_LIMIT_SHORT_SHIFT | retry_limit << RETRY_LIMIT_LONG_SHIFT); rtl_dbg(rtlpriv, COMP_MLME, DBG_DMESG, "Set HW_VAR_RETRY_LIMIT(0x%08x)\n", retry_limit); break; } case HW_VAR_DUAL_TSF_RST: rtl_write_byte(rtlpriv, REG_DUAL_TSF_RST, (BIT(0) | BIT(1))); break; case HW_VAR_EFUSE_BYTES: rtlefuse->efuse_usedbytes = *((u16 *) val); break; case HW_VAR_EFUSE_USAGE: rtlefuse->efuse_usedpercentage = *val; break; case HW_VAR_IO_CMD: rtl92c_phy_set_io_cmd(hw, (*(enum io_type *)val)); break; case HW_VAR_WPA_CONFIG: rtl_write_byte(rtlpriv, REG_SECCFG, *val); break; case HW_VAR_SET_RPWM:{ u8 rpwm_val = rtl_read_byte(rtlpriv, REG_USB_HRPWM); if (rpwm_val & BIT(7)) rtl_write_byte(rtlpriv, REG_USB_HRPWM, *val); else rtl_write_byte(rtlpriv, REG_USB_HRPWM, *val | BIT(7)); break; } case HW_VAR_H2C_FW_PWRMODE:{ u8 psmode = *val; if ((psmode != FW_PS_ACTIVE_MODE) && (!IS_92C_SERIAL(rtlhal->version))) rtl92c_dm_rf_saving(hw, true); rtl92c_set_fw_pwrmode_cmd(hw, (*val)); break; } case HW_VAR_FW_PSMODE_STATUS: ppsc->fw_current_inpsmode = *((bool *) val); break; case HW_VAR_H2C_FW_JOINBSSRPT:{ u8 mstatus = *val; u8 tmp_reg422; bool recover = false; if (mstatus == RT_MEDIA_CONNECT) { rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AID, NULL); rtl_write_byte(rtlpriv, REG_CR + 1, 0x03); _rtl92cu_set_bcn_ctrl_reg(hw, 0, BIT(3)); _rtl92cu_set_bcn_ctrl_reg(hw, BIT(4), 0); tmp_reg422 = rtl_read_byte(rtlpriv, REG_FWHW_TXQ_CTRL + 2); if (tmp_reg422 & BIT(6)) recover = true; rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL + 2, tmp_reg422 & (~BIT(6))); rtl92c_set_fw_rsvdpagepkt(hw, &usb_cmd_send_packet); _rtl92cu_set_bcn_ctrl_reg(hw, BIT(3), 0); _rtl92cu_set_bcn_ctrl_reg(hw, 0, BIT(4)); if (recover) rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL + 2, tmp_reg422 | BIT(6)); rtl_write_byte(rtlpriv, REG_CR + 1, 0x02); } rtl92c_set_fw_joinbss_report_cmd(hw, (*val)); break; } case HW_VAR_AID:{ u16 u2btmp; u2btmp = rtl_read_word(rtlpriv, REG_BCN_PSR_RPT); u2btmp &= 0xC000; rtl_write_word(rtlpriv, REG_BCN_PSR_RPT, (u2btmp | mac->assoc_id)); break; } case HW_VAR_CORRECT_TSF:{ u8 btype_ibss = val[0]; if (btype_ibss) _rtl92cu_stop_tx_beacon(hw); _rtl92cu_set_bcn_ctrl_reg(hw, 0, BIT(3)); rtl_write_dword(rtlpriv, REG_TSFTR, (u32)(mac->tsf & 0xffffffff)); rtl_write_dword(rtlpriv, REG_TSFTR + 4, (u32)((mac->tsf >> 32) & 0xffffffff)); _rtl92cu_set_bcn_ctrl_reg(hw, BIT(3), 0); if (btype_ibss) _rtl92cu_resume_tx_beacon(hw); break; } case HW_VAR_MGT_FILTER: rtl_write_word(rtlpriv, REG_RXFLTMAP0, *(u16 *)val); mac->rx_mgt_filter = *(u16 *)val; break; case HW_VAR_CTRL_FILTER: rtl_write_word(rtlpriv, REG_RXFLTMAP1, *(u16 *)val); mac->rx_ctrl_filter = *(u16 *)val; break; case HW_VAR_DATA_FILTER: rtl_write_word(rtlpriv, REG_RXFLTMAP2, *(u16 *)val); mac->rx_data_filter = *(u16 *)val; break; case HW_VAR_KEEP_ALIVE:{ u8 array[2]; array[0] = 0xff; array[1] = *((u8 *)val); rtl92c_fill_h2c_cmd(hw, H2C_92C_KEEP_ALIVE_CTRL, 2, array); break; } default: pr_err("switch case %#x not processed\n", variable); break; } } static void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, struct ieee80211_sta *sta) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_phy *rtlphy = &(rtlpriv->phy); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); u32 ratr_value; u8 ratr_index = 0; u8 nmode = mac->ht_enable; u8 mimo_ps = IEEE80211_SMPS_OFF; u16 shortgi_rate; u32 tmp_ratr_value; u8 curtxbw_40mhz = mac->bw_40; u8 curshortgi_40mhz = (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ? 1 : 0; u8 curshortgi_20mhz = (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ? 1 : 0; enum wireless_mode wirelessmode = mac->mode; if (rtlhal->current_bandtype == BAND_ON_5G) ratr_value = sta->deflink.supp_rates[1] << 4; else ratr_value = sta->deflink.supp_rates[0]; if (mac->opmode == NL80211_IFTYPE_ADHOC) ratr_value = 0xfff; ratr_value |= (sta->deflink.ht_cap.mcs.rx_mask[1] << 20 | sta->deflink.ht_cap.mcs.rx_mask[0] << 12); switch (wirelessmode) { case WIRELESS_MODE_B: if (ratr_value & 0x0000000c) ratr_value &= 0x0000000d; else ratr_value &= 0x0000000f; break; case WIRELESS_MODE_G: ratr_value &= 0x00000FF5; break; case WIRELESS_MODE_N_24G: case WIRELESS_MODE_N_5G: nmode = 1; if (mimo_ps == IEEE80211_SMPS_STATIC) { ratr_value &= 0x0007F005; } else { u32 ratr_mask; if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_1T1R) ratr_mask = 0x000ff005; else ratr_mask = 0x0f0ff005; ratr_value &= ratr_mask; } break; default: if (rtlphy->rf_type == RF_1T2R) ratr_value &= 0x000ff0ff; else ratr_value &= 0x0f0ff0ff; break; } ratr_value &= 0x0FFFFFFF; if (nmode && ((curtxbw_40mhz && curshortgi_40mhz) || (!curtxbw_40mhz && curshortgi_20mhz))) { ratr_value |= 0x10000000; tmp_ratr_value = (ratr_value >> 12); for (shortgi_rate = 15; shortgi_rate > 0; shortgi_rate--) { if ((1 << shortgi_rate) & tmp_ratr_value) break; } shortgi_rate = (shortgi_rate << 12) | (shortgi_rate << 8) | (shortgi_rate << 4) | (shortgi_rate); } rtl_write_dword(rtlpriv, REG_ARFR0 + ratr_index * 4, ratr_value); rtl_dbg(rtlpriv, COMP_RATR, DBG_DMESG, "%x\n", rtl_read_dword(rtlpriv, REG_ARFR0)); } static void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 rssi_level, bool update_bw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_phy *rtlphy = &(rtlpriv->phy); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); struct rtl_sta_info *sta_entry = NULL; u32 ratr_bitmap; u8 ratr_index; u8 curtxbw_40mhz = (sta->deflink.bandwidth >= IEEE80211_STA_RX_BW_40) ? 1 : 0; u8 curshortgi_40mhz = curtxbw_40mhz && (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ? 1 : 0; u8 curshortgi_20mhz = (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ? 1 : 0; enum wireless_mode wirelessmode = 0; bool shortgi = false; u8 rate_mask[5]; u8 macid = 0; u8 mimo_ps = IEEE80211_SMPS_OFF; sta_entry = (struct rtl_sta_info *) sta->drv_priv; wirelessmode = sta_entry->wireless_mode; if (mac->opmode == NL80211_IFTYPE_STATION || mac->opmode == NL80211_IFTYPE_MESH_POINT) curtxbw_40mhz = mac->bw_40; else if (mac->opmode == NL80211_IFTYPE_AP || mac->opmode == NL80211_IFTYPE_ADHOC) macid = sta->aid + 1; if (rtlhal->current_bandtype == BAND_ON_5G) ratr_bitmap = sta->deflink.supp_rates[1] << 4; else ratr_bitmap = sta->deflink.supp_rates[0]; if (mac->opmode == NL80211_IFTYPE_ADHOC) ratr_bitmap = 0xfff; ratr_bitmap |= (sta->deflink.ht_cap.mcs.rx_mask[1] << 20 | sta->deflink.ht_cap.mcs.rx_mask[0] << 12); switch (wirelessmode) { case WIRELESS_MODE_B: ratr_index = RATR_INX_WIRELESS_B; if (ratr_bitmap & 0x0000000c) ratr_bitmap &= 0x0000000d; else ratr_bitmap &= 0x0000000f; break; case WIRELESS_MODE_G: ratr_index = RATR_INX_WIRELESS_GB; if (rssi_level == 1) ratr_bitmap &= 0x00000f00; else if (rssi_level == 2) ratr_bitmap &= 0x00000ff0; else ratr_bitmap &= 0x00000ff5; break; case WIRELESS_MODE_A: ratr_index = RATR_INX_WIRELESS_A; ratr_bitmap &= 0x00000ff0; break; case WIRELESS_MODE_N_24G: case WIRELESS_MODE_N_5G: ratr_index = RATR_INX_WIRELESS_NGB; if (mimo_ps == IEEE80211_SMPS_STATIC) { if (rssi_level == 1) ratr_bitmap &= 0x00070000; else if (rssi_level == 2) ratr_bitmap &= 0x0007f000; else ratr_bitmap &= 0x0007f005; } else { if (rtlphy->rf_type == RF_1T2R || rtlphy->rf_type == RF_1T1R) { if (curtxbw_40mhz) { if (rssi_level == 1) ratr_bitmap &= 0x000f0000; else if (rssi_level == 2) ratr_bitmap &= 0x000ff000; else ratr_bitmap &= 0x000ff015; } else { if (rssi_level == 1) ratr_bitmap &= 0x000f0000; else if (rssi_level == 2) ratr_bitmap &= 0x000ff000; else ratr_bitmap &= 0x000ff005; } } else { if (curtxbw_40mhz) { if (rssi_level == 1) ratr_bitmap &= 0x0f0f0000; else if (rssi_level == 2) ratr_bitmap &= 0x0f0ff000; else ratr_bitmap &= 0x0f0ff015; } else { if (rssi_level == 1) ratr_bitmap &= 0x0f0f0000; else if (rssi_level == 2) ratr_bitmap &= 0x0f0ff000; else ratr_bitmap &= 0x0f0ff005; } } } if ((curtxbw_40mhz && curshortgi_40mhz) || (!curtxbw_40mhz && curshortgi_20mhz)) { if (macid == 0) shortgi = true; else if (macid == 1) shortgi = false; } break; default: ratr_index = RATR_INX_WIRELESS_NGB; if (rtlphy->rf_type == RF_1T2R) ratr_bitmap &= 0x000ff0ff; else ratr_bitmap &= 0x0f0ff0ff; break; } sta_entry->ratr_index = ratr_index; rtl_dbg(rtlpriv, COMP_RATR, DBG_DMESG, "ratr_bitmap :%x\n", ratr_bitmap); *(u32 *)&rate_mask = (ratr_bitmap & 0x0fffffff) | (ratr_index << 28); rate_mask[4] = macid | (shortgi ? 0x20 : 0x00) | 0x80; rtl_dbg(rtlpriv, COMP_RATR, DBG_DMESG, "Rate_index:%x, ratr_val:%x, %5phC\n", ratr_index, ratr_bitmap, rate_mask); memcpy(rtlpriv->rate_mask, rate_mask, 5); /* rtl92c_fill_h2c_cmd() does USB I/O and will result in a * "scheduled while atomic" if called directly */ schedule_work(&rtlpriv->works.fill_h2c_cmd); if (macid != 0) sta_entry->ratr_index = ratr_index; } void rtl92cu_update_hal_rate_tbl(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 rssi_level, bool update_bw) { struct rtl_priv *rtlpriv = rtl_priv(hw); if (rtlpriv->dm.useramask) rtl92cu_update_hal_rate_mask(hw, sta, rssi_level, update_bw); else rtl92cu_update_hal_rate_table(hw, sta); } void rtl92cu_update_channel_access_setting(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); u16 sifs_timer; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SLOT_TIME, &mac->slot_time); if (!mac->ht_enable) sifs_timer = 0x0a0a; else sifs_timer = 0x0e0e; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SIFS, (u8 *)&sifs_timer); } bool rtl92cu_gpio_radio_on_off_checking(struct ieee80211_hw *hw, u8 * valid) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); enum rf_pwrstate e_rfpowerstate_toset, cur_rfstate; u8 u1tmp = 0; bool actuallyset = false; unsigned long flag = 0; /* to do - usb autosuspend */ u8 usb_autosuspend = 0; if (ppsc->swrf_processing) return false; spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flag); if (ppsc->rfchange_inprogress) { spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flag); return false; } else { ppsc->rfchange_inprogress = true; spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flag); } cur_rfstate = ppsc->rfpwr_state; if (usb_autosuspend) { /* to do................... */ } else { if (ppsc->pwrdown_mode) { u1tmp = rtl_read_byte(rtlpriv, REG_HSISR); e_rfpowerstate_toset = (u1tmp & BIT(7)) ? ERFOFF : ERFON; rtl_dbg(rtlpriv, COMP_POWER, DBG_DMESG, "pwrdown, 0x5c(BIT7)=%02x\n", u1tmp); } else { rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG) & ~(BIT(3))); u1tmp = rtl_read_byte(rtlpriv, REG_GPIO_IO_SEL); e_rfpowerstate_toset = (u1tmp & BIT(3)) ? ERFON : ERFOFF; rtl_dbg(rtlpriv, COMP_POWER, DBG_DMESG, "GPIO_IN=%02x\n", u1tmp); } rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD, "N-SS RF =%x\n", e_rfpowerstate_toset); } if ((ppsc->hwradiooff) && (e_rfpowerstate_toset == ERFON)) { rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD, "GPIOChangeRF - HW Radio ON, RF ON\n"); ppsc->hwradiooff = false; actuallyset = true; } else if ((!ppsc->hwradiooff) && (e_rfpowerstate_toset == ERFOFF)) { rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD, "GPIOChangeRF - HW Radio OFF\n"); ppsc->hwradiooff = true; actuallyset = true; } else { rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD, "pHalData->bHwRadioOff and eRfPowerStateToSet do not match: pHalData->bHwRadioOff %x, eRfPowerStateToSet %x\n", ppsc->hwradiooff, e_rfpowerstate_toset); } if (actuallyset) { ppsc->hwradiooff = true; if (e_rfpowerstate_toset == ERFON) { if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) && RT_IN_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_ASPM)) RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_ASPM); else if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_PCI_D3) && RT_IN_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_PCI_D3)) RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_PCI_D3); } spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flag); ppsc->rfchange_inprogress = false; spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flag); /* For power down module, we need to enable register block * contrl reg at 0x1c. Then enable power down control bit * of register 0x04 BIT4 and BIT15 as 1. */ if (ppsc->pwrdown_mode && e_rfpowerstate_toset == ERFOFF) { /* Enable register area 0x0-0xc. */ rtl_write_byte(rtlpriv, REG_RSV_CTRL, 0x0); rtl_write_word(rtlpriv, REG_APS_FSMCO, 0x8812); } if (e_rfpowerstate_toset == ERFOFF) { if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_ASPM); else if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_PCI_D3) RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_PCI_D3); } } else if (e_rfpowerstate_toset == ERFOFF || cur_rfstate == ERFOFF) { /* Enter D3 or ASPM after GPIO had been done. */ if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_ASPM); else if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_PCI_D3) RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_PCI_D3); spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flag); ppsc->rfchange_inprogress = false; spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flag); } else { spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flag); ppsc->rfchange_inprogress = false; spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flag); } *valid = 1; return !ppsc->hwradiooff; } |
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5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 | // SPDX-License-Identifier: GPL-2.0-only /* * mac80211 configuration hooks for cfg80211 * * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2015-2017 Intel Deutschland GmbH * Copyright (C) 2018-2025 Intel Corporation */ #include <linux/ieee80211.h> #include <linux/nl80211.h> #include <linux/rtnetlink.h> #include <linux/slab.h> #include <net/net_namespace.h> #include <linux/rcupdate.h> #include <linux/fips.h> #include <linux/if_ether.h> #include <net/cfg80211.h> #include "ieee80211_i.h" #include "driver-ops.h" #include "rate.h" #include "mesh.h" #include "wme.h" static struct ieee80211_link_data * ieee80211_link_or_deflink(struct ieee80211_sub_if_data *sdata, int link_id, bool require_valid) { struct ieee80211_link_data *link; if (link_id < 0) { /* * For keys, if sdata is not an MLD, we might not use * the return value at all (if it's not a pairwise key), * so in that case (require_valid==false) don't error. */ if (require_valid && ieee80211_vif_is_mld(&sdata->vif)) return ERR_PTR(-EINVAL); return &sdata->deflink; } link = sdata_dereference(sdata->link[link_id], sdata); if (!link) return ERR_PTR(-ENOLINK); return link; } static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata, struct vif_params *params) { bool mu_mimo_groups = false; bool mu_mimo_follow = false; if (params->vht_mumimo_groups) { u64 membership; BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN); memcpy(sdata->vif.bss_conf.mu_group.membership, params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); memcpy(sdata->vif.bss_conf.mu_group.position, params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN, WLAN_USER_POSITION_LEN); ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_MU_GROUPS); /* don't care about endianness - just check for 0 */ memcpy(&membership, params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); mu_mimo_groups = membership != 0; } if (params->vht_mumimo_follow_addr) { mu_mimo_follow = is_valid_ether_addr(params->vht_mumimo_follow_addr); ether_addr_copy(sdata->u.mntr.mu_follow_addr, params->vht_mumimo_follow_addr); } sdata->vif.bss_conf.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow; } static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata, struct vif_params *params) { struct ieee80211_local *local = sdata->local; struct ieee80211_sub_if_data *monitor_sdata; /* check flags first */ if (params->flags && ieee80211_sdata_running(sdata)) { u32 mask = MONITOR_FLAG_ACTIVE; /* * Prohibit MONITOR_FLAG_ACTIVE to be changed * while the interface is up. * Else we would need to add a lot of cruft * to update everything: * monitor and all fif_* counters * reconfigure hardware */ if ((params->flags & mask) != (sdata->u.mntr.flags & mask)) return -EBUSY; } /* also validate MU-MIMO change */ if (ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) monitor_sdata = sdata; else monitor_sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (!monitor_sdata && (params->vht_mumimo_groups || params->vht_mumimo_follow_addr)) return -EOPNOTSUPP; /* apply all changes now - no failures allowed */ if (monitor_sdata && (ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) || ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR))) ieee80211_set_mu_mimo_follow(monitor_sdata, params); if (params->flags) { if (ieee80211_sdata_running(sdata)) { ieee80211_adjust_monitor_flags(sdata, -1); sdata->u.mntr.flags = params->flags; ieee80211_adjust_monitor_flags(sdata, 1); ieee80211_configure_filter(local); } else { /* * Because the interface is down, ieee80211_do_stop * and ieee80211_do_open take care of "everything" * mentioned in the comment above. */ sdata->u.mntr.flags = params->flags; } } return 0; } static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata, struct cfg80211_mbssid_config *params, struct ieee80211_bss_conf *link_conf) { struct ieee80211_sub_if_data *tx_sdata; sdata->vif.mbssid_tx_vif = NULL; link_conf->bssid_index = 0; link_conf->nontransmitted = false; link_conf->ema_ap = false; link_conf->bssid_indicator = 0; if (sdata->vif.type != NL80211_IFTYPE_AP || !params->tx_wdev) return -EINVAL; tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params->tx_wdev); if (!tx_sdata) return -EINVAL; if (tx_sdata == sdata) { sdata->vif.mbssid_tx_vif = &sdata->vif; } else { sdata->vif.mbssid_tx_vif = &tx_sdata->vif; link_conf->nontransmitted = true; link_conf->bssid_index = params->index; } if (params->ema) link_conf->ema_ap = true; return 0; } static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, const char *name, unsigned char name_assign_type, enum nl80211_iftype type, struct vif_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct wireless_dev *wdev; struct ieee80211_sub_if_data *sdata; int err; err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); if (err) return ERR_PTR(err); sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (type == NL80211_IFTYPE_MONITOR) { err = ieee80211_set_mon_options(sdata, params); if (err) { ieee80211_if_remove(sdata); return NULL; } } /* Let the driver know that an interface is going to be added. * Indicate so only for interface types that will be added to the * driver. */ switch (type) { case NL80211_IFTYPE_AP_VLAN: break; case NL80211_IFTYPE_MONITOR: if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) || !(params->flags & MONITOR_FLAG_ACTIVE)) break; fallthrough; default: drv_prep_add_interface(local, ieee80211_vif_type_p2p(&sdata->vif)); break; } return wdev; } static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) { ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); return 0; } static int ieee80211_change_iface(struct wiphy *wiphy, struct net_device *dev, enum nl80211_iftype type, struct vif_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret; lockdep_assert_wiphy(local->hw.wiphy); ret = ieee80211_if_change_type(sdata, type); if (ret) return ret; if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) { RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); ieee80211_check_fast_rx_iface(sdata); } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; if (params->use_4addr == ifmgd->use_4addr) return 0; /* FIXME: no support for 4-addr MLO yet */ if (ieee80211_vif_is_mld(&sdata->vif)) return -EOPNOTSUPP; sdata->u.mgd.use_4addr = params->use_4addr; if (!ifmgd->associated) return 0; sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid); if (sta) drv_sta_set_4addr(local, sdata, &sta->sta, params->use_4addr); if (params->use_4addr) ieee80211_send_4addr_nullfunc(local, sdata); } if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { ret = ieee80211_set_mon_options(sdata, params); if (ret) return ret; } return 0; } static int ieee80211_start_p2p_device(struct wiphy *wiphy, struct wireless_dev *wdev) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); int ret; lockdep_assert_wiphy(sdata->local->hw.wiphy); ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1); if (ret < 0) return ret; return ieee80211_do_open(wdev, true); } static void ieee80211_stop_p2p_device(struct wiphy *wiphy, struct wireless_dev *wdev) { ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); } static int ieee80211_start_nan(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_conf *conf) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); int ret; lockdep_assert_wiphy(sdata->local->hw.wiphy); ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1); if (ret < 0) return ret; ret = ieee80211_do_open(wdev, true); if (ret) return ret; ret = drv_start_nan(sdata->local, sdata, conf); if (ret) ieee80211_sdata_stop(sdata); sdata->u.nan.conf = *conf; return ret; } static void ieee80211_stop_nan(struct wiphy *wiphy, struct wireless_dev *wdev) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); drv_stop_nan(sdata->local, sdata); ieee80211_sdata_stop(sdata); } static int ieee80211_nan_change_conf(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_conf *conf, u32 changes) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct cfg80211_nan_conf new_conf; int ret = 0; if (sdata->vif.type != NL80211_IFTYPE_NAN) return -EOPNOTSUPP; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; new_conf = sdata->u.nan.conf; if (changes & CFG80211_NAN_CONF_CHANGED_PREF) new_conf.master_pref = conf->master_pref; if (changes & CFG80211_NAN_CONF_CHANGED_BANDS) new_conf.bands = conf->bands; ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes); if (!ret) sdata->u.nan.conf = new_conf; return ret; } static int ieee80211_add_nan_func(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_func *nan_func) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); int ret; if (sdata->vif.type != NL80211_IFTYPE_NAN) return -EOPNOTSUPP; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; spin_lock_bh(&sdata->u.nan.func_lock); ret = idr_alloc(&sdata->u.nan.function_inst_ids, nan_func, 1, sdata->local->hw.max_nan_de_entries + 1, GFP_ATOMIC); spin_unlock_bh(&sdata->u.nan.func_lock); if (ret < 0) return ret; nan_func->instance_id = ret; WARN_ON(nan_func->instance_id == 0); ret = drv_add_nan_func(sdata->local, sdata, nan_func); if (ret) { spin_lock_bh(&sdata->u.nan.func_lock); idr_remove(&sdata->u.nan.function_inst_ids, nan_func->instance_id); spin_unlock_bh(&sdata->u.nan.func_lock); } return ret; } static struct cfg80211_nan_func * ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata, u64 cookie) { struct cfg80211_nan_func *func; int id; lockdep_assert_held(&sdata->u.nan.func_lock); idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) { if (func->cookie == cookie) return func; } return NULL; } static void ieee80211_del_nan_func(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct cfg80211_nan_func *func; u8 instance_id = 0; if (sdata->vif.type != NL80211_IFTYPE_NAN || !ieee80211_sdata_running(sdata)) return; spin_lock_bh(&sdata->u.nan.func_lock); func = ieee80211_find_nan_func_by_cookie(sdata, cookie); if (func) instance_id = func->instance_id; spin_unlock_bh(&sdata->u.nan.func_lock); if (instance_id) drv_del_nan_func(sdata->local, sdata, instance_id); } static int ieee80211_set_noack_map(struct wiphy *wiphy, struct net_device *dev, u16 noack_map) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); sdata->noack_map = noack_map; ieee80211_check_fast_xmit_iface(sdata); return 0; } static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata, const u8 *mac_addr, u8 key_idx) { struct ieee80211_local *local = sdata->local; struct ieee80211_key *key; struct sta_info *sta; int ret = -EINVAL; if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_EXT_KEY_ID)) return -EINVAL; sta = sta_info_get_bss(sdata, mac_addr); if (!sta) return -EINVAL; if (sta->ptk_idx == key_idx) return 0; key = wiphy_dereference(local->hw.wiphy, sta->ptk[key_idx]); if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX) ret = ieee80211_set_tx_key(key); return ret; } static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr, struct key_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, false); struct ieee80211_local *local = sdata->local; struct sta_info *sta = NULL; struct ieee80211_key *key; int err; lockdep_assert_wiphy(local->hw.wiphy); if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; if (IS_ERR(link)) return PTR_ERR(link); if (WARN_ON(pairwise && link_id >= 0)) return -EINVAL; if (pairwise && params->mode == NL80211_KEY_SET_TX) return ieee80211_set_tx(sdata, mac_addr, key_idx); /* reject WEP and TKIP keys if WEP failed to initialize */ switch (params->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_TKIP: case WLAN_CIPHER_SUITE_WEP104: if (link_id >= 0) return -EINVAL; if (WARN_ON_ONCE(fips_enabled)) return -EINVAL; break; default: break; } key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, params->key, params->seq_len, params->seq); if (IS_ERR(key)) return PTR_ERR(key); if (pairwise) { key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; key->conf.link_id = -1; } else { key->conf.link_id = link->link_id; } if (params->mode == NL80211_KEY_NO_TX) key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX; if (mac_addr) { sta = sta_info_get_bss(sdata, mac_addr); /* * The ASSOC test makes sure the driver is ready to * receive the key. When wpa_supplicant has roamed * using FT, it attempts to set the key before * association has completed, this rejects that attempt * so it will set the key again after association. * * TODO: accept the key if we have a station entry and * add it to the device after the station. */ if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { ieee80211_key_free_unused(key); return -ENOENT; } } switch (sdata->vif.type) { case NL80211_IFTYPE_STATION: if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: /* Keys without a station are used for TX only */ if (sta && test_sta_flag(sta, WLAN_STA_MFP)) key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; break; case NL80211_IFTYPE_ADHOC: /* no MFP (yet) */ break; case NL80211_IFTYPE_MESH_POINT: #ifdef CONFIG_MAC80211_MESH if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; break; #endif case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_P2P_DEVICE: case NL80211_IFTYPE_NAN: case NL80211_IFTYPE_UNSPECIFIED: case NUM_NL80211_IFTYPES: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_OCB: /* shouldn't happen */ WARN_ON_ONCE(1); break; } err = ieee80211_key_link(key, link, sta); /* KRACK protection, shouldn't happen but just silently accept key */ if (err == -EALREADY) err = 0; return err; } static struct ieee80211_key * ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr) { struct ieee80211_local *local __maybe_unused = sdata->local; struct ieee80211_link_data *link = &sdata->deflink; struct ieee80211_key *key; if (link_id >= 0) { link = sdata_dereference(sdata->link[link_id], sdata); if (!link) return NULL; } if (mac_addr) { struct sta_info *sta; struct link_sta_info *link_sta; sta = sta_info_get_bss(sdata, mac_addr); if (!sta) return NULL; if (link_id >= 0) { link_sta = rcu_dereference_check(sta->link[link_id], lockdep_is_held(&local->hw.wiphy->mtx)); if (!link_sta) return NULL; } else { link_sta = &sta->deflink; } if (pairwise && key_idx < NUM_DEFAULT_KEYS) return wiphy_dereference(local->hw.wiphy, sta->ptk[key_idx]); if (!pairwise && key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS + NUM_DEFAULT_BEACON_KEYS) return wiphy_dereference(local->hw.wiphy, link_sta->gtk[key_idx]); return NULL; } if (pairwise && key_idx < NUM_DEFAULT_KEYS) return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]); key = wiphy_dereference(local->hw.wiphy, link->gtk[key_idx]); if (key) return key; /* or maybe it was a WEP key */ if (key_idx < NUM_DEFAULT_KEYS) return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]); return NULL; } static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_key *key; lockdep_assert_wiphy(local->hw.wiphy); key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr); if (!key) return -ENOENT; ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION); return 0; } static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr, void *cookie, void (*callback)(void *cookie, struct key_params *params)) { struct ieee80211_sub_if_data *sdata; u8 seq[6] = {0}; struct key_params params; struct ieee80211_key *key; u64 pn64; u32 iv32; u16 iv16; int err = -ENOENT; struct ieee80211_key_seq kseq = {}; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr); if (!key) goto out; memset(¶ms, 0, sizeof(params)); params.cipher = key->conf.cipher; switch (key->conf.cipher) { case WLAN_CIPHER_SUITE_TKIP: pn64 = atomic64_read(&key->conf.tx_pn); iv32 = TKIP_PN_TO_IV32(pn64); iv16 = TKIP_PN_TO_IV16(pn64); if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { drv_get_key_seq(sdata->local, key, &kseq); iv32 = kseq.tkip.iv32; iv16 = kseq.tkip.iv16; } seq[0] = iv16 & 0xff; seq[1] = (iv16 >> 8) & 0xff; seq[2] = iv32 & 0xff; seq[3] = (iv32 >> 8) & 0xff; seq[4] = (iv32 >> 16) & 0xff; seq[5] = (iv32 >> 24) & 0xff; params.seq = seq; params.seq_len = 6; break; case WLAN_CIPHER_SUITE_CCMP: case WLAN_CIPHER_SUITE_CCMP_256: case WLAN_CIPHER_SUITE_AES_CMAC: case WLAN_CIPHER_SUITE_BIP_CMAC_256: BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != offsetof(typeof(kseq), aes_cmac)); fallthrough; case WLAN_CIPHER_SUITE_BIP_GMAC_128: case WLAN_CIPHER_SUITE_BIP_GMAC_256: BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != offsetof(typeof(kseq), aes_gmac)); fallthrough; case WLAN_CIPHER_SUITE_GCMP: case WLAN_CIPHER_SUITE_GCMP_256: BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != offsetof(typeof(kseq), gcmp)); if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { drv_get_key_seq(sdata->local, key, &kseq); memcpy(seq, kseq.ccmp.pn, 6); } else { pn64 = atomic64_read(&key->conf.tx_pn); seq[0] = pn64; seq[1] = pn64 >> 8; seq[2] = pn64 >> 16; seq[3] = pn64 >> 24; seq[4] = pn64 >> 32; seq[5] = pn64 >> 40; } params.seq = seq; params.seq_len = 6; break; default: if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) break; if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) break; drv_get_key_seq(sdata->local, key, &kseq); params.seq = kseq.hw.seq; params.seq_len = kseq.hw.seq_len; break; } callback(cookie, ¶ms); err = 0; out: rcu_read_unlock(); return err; } static int ieee80211_config_default_key(struct wiphy *wiphy, struct net_device *dev, int link_id, u8 key_idx, bool uni, bool multi) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, false); if (IS_ERR(link)) return PTR_ERR(link); ieee80211_set_default_key(link, key_idx, uni, multi); return 0; } static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, struct net_device *dev, int link_id, u8 key_idx) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, true); if (IS_ERR(link)) return PTR_ERR(link); ieee80211_set_default_mgmt_key(link, key_idx); return 0; } static int ieee80211_config_default_beacon_key(struct wiphy *wiphy, struct net_device *dev, int link_id, u8 key_idx) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, true); if (IS_ERR(link)) return PTR_ERR(link); ieee80211_set_default_beacon_key(link, key_idx); return 0; } void sta_set_rate_info_tx(struct sta_info *sta, const struct ieee80211_tx_rate *rate, struct rate_info *rinfo) { rinfo->flags = 0; if (rate->flags & IEEE80211_TX_RC_MCS) { rinfo->flags |= RATE_INFO_FLAGS_MCS; rinfo->mcs = rate->idx; } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); rinfo->nss = ieee80211_rate_get_vht_nss(rate); } else { struct ieee80211_supported_band *sband; sband = ieee80211_get_sband(sta->sdata); WARN_ON_ONCE(sband && !sband->bitrates); if (sband && sband->bitrates) rinfo->legacy = sband->bitrates[rate->idx].bitrate; } if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) rinfo->bw = RATE_INFO_BW_40; else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) rinfo->bw = RATE_INFO_BW_80; else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) rinfo->bw = RATE_INFO_BW_160; else rinfo->bw = RATE_INFO_BW_20; if (rate->flags & IEEE80211_TX_RC_SHORT_GI) rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; } static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret = -ENOENT; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_by_idx(sdata, idx); if (sta) { ret = 0; memcpy(mac, sta->sta.addr, ETH_ALEN); sta_set_sinfo(sta, sinfo, true); } return ret; } static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, int idx, struct survey_info *survey) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); return drv_get_survey(local, idx, survey); } static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, const u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret = -ENOENT; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, mac); if (sta) { ret = 0; sta_set_sinfo(sta, sinfo, true); } return ret; } static int ieee80211_set_monitor_channel(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_chan_def *chandef) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; struct ieee80211_chan_req chanreq = { .oper = *chandef }; int ret; lockdep_assert_wiphy(local->hw.wiphy); sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { if (cfg80211_chandef_identical(&local->monitor_chanreq.oper, &chanreq.oper)) return 0; sdata = wiphy_dereference(wiphy, local->monitor_sdata); if (!sdata) goto done; } if (rcu_access_pointer(sdata->deflink.conf->chanctx_conf) && cfg80211_chandef_identical(&sdata->vif.bss_conf.chanreq.oper, &chanreq.oper)) return 0; ieee80211_link_release_channel(&sdata->deflink); ret = ieee80211_link_use_channel(&sdata->deflink, &chanreq, IEEE80211_CHANCTX_SHARED); if (ret) return ret; done: local->monitor_chanreq = chanreq; return 0; } static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, const u8 *resp, size_t resp_len, const struct ieee80211_csa_settings *csa, const struct ieee80211_color_change_settings *cca, struct ieee80211_link_data *link) { struct probe_resp *new, *old; if (!resp || !resp_len) return 1; old = sdata_dereference(link->u.ap.probe_resp, sdata); new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); if (!new) return -ENOMEM; new->len = resp_len; memcpy(new->data, resp, resp_len); if (csa) memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp, csa->n_counter_offsets_presp * sizeof(new->cntdwn_counter_offsets[0])); else if (cca) new->cntdwn_counter_offsets[0] = cca->counter_offset_presp; rcu_assign_pointer(link->u.ap.probe_resp, new); if (old) kfree_rcu(old, rcu_head); return 0; } static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata, struct cfg80211_fils_discovery *params, struct ieee80211_link_data *link, struct ieee80211_bss_conf *link_conf, u64 *changed) { struct fils_discovery_data *new, *old = NULL; struct ieee80211_fils_discovery *fd; if (!params->update) return 0; fd = &link_conf->fils_discovery; fd->min_interval = params->min_interval; fd->max_interval = params->max_interval; old = sdata_dereference(link->u.ap.fils_discovery, sdata); if (old) kfree_rcu(old, rcu_head); if (params->tmpl && params->tmpl_len) { new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); if (!new) return -ENOMEM; new->len = params->tmpl_len; memcpy(new->data, params->tmpl, params->tmpl_len); rcu_assign_pointer(link->u.ap.fils_discovery, new); } else { RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL); } *changed |= BSS_CHANGED_FILS_DISCOVERY; return 0; } static int ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata, struct cfg80211_unsol_bcast_probe_resp *params, struct ieee80211_link_data *link, struct ieee80211_bss_conf *link_conf, u64 *changed) { struct unsol_bcast_probe_resp_data *new, *old = NULL; if (!params->update) return 0; link_conf->unsol_bcast_probe_resp_interval = params->interval; old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata); if (old) kfree_rcu(old, rcu_head); if (params->tmpl && params->tmpl_len) { new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); if (!new) return -ENOMEM; new->len = params->tmpl_len; memcpy(new->data, params->tmpl, params->tmpl_len); rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new); } else { RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL); } *changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP; return 0; } static int ieee80211_set_ftm_responder_params( struct ieee80211_sub_if_data *sdata, const u8 *lci, size_t lci_len, const u8 *civicloc, size_t civicloc_len, struct ieee80211_bss_conf *link_conf) { struct ieee80211_ftm_responder_params *new, *old; u8 *pos; int len; if (!lci_len && !civicloc_len) return 0; old = link_conf->ftmr_params; len = lci_len + civicloc_len; new = kzalloc(sizeof(*new) + len, GFP_KERNEL); if (!new) return -ENOMEM; pos = (u8 *)(new + 1); if (lci_len) { new->lci_len = lci_len; new->lci = pos; memcpy(pos, lci, lci_len); pos += lci_len; } if (civicloc_len) { new->civicloc_len = civicloc_len; new->civicloc = pos; memcpy(pos, civicloc, civicloc_len); pos += civicloc_len; } link_conf->ftmr_params = new; kfree(old); return 0; } static int ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst, struct cfg80211_mbssid_elems *src) { int i, offset = 0; dst->cnt = src->cnt; for (i = 0; i < src->cnt; i++) { memcpy(pos + offset, src->elem[i].data, src->elem[i].len); dst->elem[i].len = src->elem[i].len; dst->elem[i].data = pos + offset; offset += dst->elem[i].len; } return offset; } static int ieee80211_copy_rnr_beacon(u8 *pos, struct cfg80211_rnr_elems *dst, struct cfg80211_rnr_elems *src) { int i, offset = 0; for (i = 0; i < src->cnt; i++) { memcpy(pos + offset, src->elem[i].data, src->elem[i].len); dst->elem[i].len = src->elem[i].len; dst->elem[i].data = pos + offset; offset += dst->elem[i].len; } dst->cnt = src->cnt; return offset; } static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, struct ieee80211_link_data *link, struct cfg80211_beacon_data *params, const struct ieee80211_csa_settings *csa, const struct ieee80211_color_change_settings *cca, u64 *changed) { struct cfg80211_mbssid_elems *mbssid = NULL; struct cfg80211_rnr_elems *rnr = NULL; struct beacon_data *new, *old; int new_head_len, new_tail_len; int size, err; u64 _changed = BSS_CHANGED_BEACON; struct ieee80211_bss_conf *link_conf = link->conf; old = sdata_dereference(link->u.ap.beacon, sdata); /* Need to have a beacon head if we don't have one yet */ if (!params->head && !old) return -EINVAL; /* new or old head? */ if (params->head) new_head_len = params->head_len; else new_head_len = old->head_len; /* new or old tail? */ if (params->tail || !old) /* params->tail_len will be zero for !params->tail */ new_tail_len = params->tail_len; else new_tail_len = old->tail_len; size = sizeof(*new) + new_head_len + new_tail_len; /* new or old multiple BSSID elements? */ if (params->mbssid_ies) { mbssid = params->mbssid_ies; size += struct_size(new->mbssid_ies, elem, mbssid->cnt); if (params->rnr_ies) { rnr = params->rnr_ies; size += struct_size(new->rnr_ies, elem, rnr->cnt); } size += ieee80211_get_mbssid_beacon_len(mbssid, rnr, mbssid->cnt); } else if (old && old->mbssid_ies) { mbssid = old->mbssid_ies; size += struct_size(new->mbssid_ies, elem, mbssid->cnt); if (old && old->rnr_ies) { rnr = old->rnr_ies; size += struct_size(new->rnr_ies, elem, rnr->cnt); } size += ieee80211_get_mbssid_beacon_len(mbssid, rnr, mbssid->cnt); } new = kzalloc(size, GFP_KERNEL); if (!new) return -ENOMEM; /* start filling the new info now */ /* * pointers go into the block we allocated, * memory is | beacon_data | head | tail | mbssid_ies | rnr_ies */ new->head = ((u8 *) new) + sizeof(*new); new->tail = new->head + new_head_len; new->head_len = new_head_len; new->tail_len = new_tail_len; /* copy in optional mbssid_ies */ if (mbssid) { u8 *pos = new->tail + new->tail_len; new->mbssid_ies = (void *)pos; pos += struct_size(new->mbssid_ies, elem, mbssid->cnt); pos += ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies, mbssid); if (rnr) { new->rnr_ies = (void *)pos; pos += struct_size(new->rnr_ies, elem, rnr->cnt); ieee80211_copy_rnr_beacon(pos, new->rnr_ies, rnr); } /* update bssid_indicator */ link_conf->bssid_indicator = ilog2(__roundup_pow_of_two(mbssid->cnt + 1)); } if (csa) { new->cntdwn_current_counter = csa->count; memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon, csa->n_counter_offsets_beacon * sizeof(new->cntdwn_counter_offsets[0])); } else if (cca) { new->cntdwn_current_counter = cca->count; new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon; } /* copy in head */ if (params->head) memcpy(new->head, params->head, new_head_len); else memcpy(new->head, old->head, new_head_len); /* copy in optional tail */ if (params->tail) memcpy(new->tail, params->tail, new_tail_len); else if (old) memcpy(new->tail, old->tail, new_tail_len); err = ieee80211_set_probe_resp(sdata, params->probe_resp, params->probe_resp_len, csa, cca, link); if (err < 0) { kfree(new); return err; } if (err == 0) _changed |= BSS_CHANGED_AP_PROBE_RESP; if (params->ftm_responder != -1) { link_conf->ftm_responder = params->ftm_responder; err = ieee80211_set_ftm_responder_params(sdata, params->lci, params->lci_len, params->civicloc, params->civicloc_len, link_conf); if (err < 0) { kfree(new); return err; } _changed |= BSS_CHANGED_FTM_RESPONDER; } rcu_assign_pointer(link->u.ap.beacon, new); sdata->u.ap.active = true; if (old) kfree_rcu(old, rcu_head); *changed |= _changed; return 0; } static u8 ieee80211_num_beaconing_links(struct ieee80211_sub_if_data *sdata) { struct ieee80211_link_data *link; u8 link_id, num = 0; if (sdata->vif.type != NL80211_IFTYPE_AP && sdata->vif.type != NL80211_IFTYPE_P2P_GO) return num; if (!sdata->vif.valid_links) return num; for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { link = sdata_dereference(sdata->link[link_id], sdata); if (!link) continue; if (sdata_dereference(link->u.ap.beacon, sdata)) num++; } return num; } static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ap_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct beacon_data *old; struct ieee80211_sub_if_data *vlan; u64 changed = BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON | BSS_CHANGED_P2P_PS | BSS_CHANGED_TXPOWER | BSS_CHANGED_TWT; int i, err; int prev_beacon_int; unsigned int link_id = params->beacon.link_id; struct ieee80211_link_data *link; struct ieee80211_bss_conf *link_conf; struct ieee80211_chan_req chanreq = { .oper = params->chandef }; lockdep_assert_wiphy(local->hw.wiphy); link = sdata_dereference(sdata->link[link_id], sdata); if (!link) return -ENOLINK; link_conf = link->conf; old = sdata_dereference(link->u.ap.beacon, sdata); if (old) return -EALREADY; link->smps_mode = IEEE80211_SMPS_OFF; link->needed_rx_chains = sdata->local->rx_chains; prev_beacon_int = link_conf->beacon_int; link_conf->beacon_int = params->beacon_interval; if (params->ht_cap) link_conf->ht_ldpc = params->ht_cap->cap_info & cpu_to_le16(IEEE80211_HT_CAP_LDPC_CODING); if (params->vht_cap) { link_conf->vht_ldpc = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC); link_conf->vht_su_beamformer = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE); link_conf->vht_su_beamformee = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE); link_conf->vht_mu_beamformer = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE); link_conf->vht_mu_beamformee = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE); } if (params->he_cap && params->he_oper) { link_conf->he_support = true; link_conf->htc_trig_based_pkt_ext = le32_get_bits(params->he_oper->he_oper_params, IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK); link_conf->frame_time_rts_th = le32_get_bits(params->he_oper->he_oper_params, IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); changed |= BSS_CHANGED_HE_OBSS_PD; if (params->beacon.he_bss_color.enabled) changed |= BSS_CHANGED_HE_BSS_COLOR; } if (params->he_cap) { link_conf->he_ldpc = params->he_cap->phy_cap_info[1] & IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD; link_conf->he_su_beamformer = params->he_cap->phy_cap_info[3] & IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER; link_conf->he_su_beamformee = params->he_cap->phy_cap_info[4] & IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE; link_conf->he_mu_beamformer = params->he_cap->phy_cap_info[4] & IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER; link_conf->he_full_ul_mumimo = params->he_cap->phy_cap_info[2] & IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO; } if (params->eht_cap) { if (!link_conf->he_support) return -EOPNOTSUPP; link_conf->eht_support = true; link_conf->eht_su_beamformer = params->eht_cap->fixed.phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER; link_conf->eht_su_beamformee = params->eht_cap->fixed.phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE; link_conf->eht_mu_beamformer = params->eht_cap->fixed.phy_cap_info[7] & (IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ | IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ | IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ); link_conf->eht_80mhz_full_bw_ul_mumimo = params->eht_cap->fixed.phy_cap_info[7] & (IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ | IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ | IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ); } else { link_conf->eht_su_beamformer = false; link_conf->eht_su_beamformee = false; link_conf->eht_mu_beamformer = false; } if (sdata->vif.type == NL80211_IFTYPE_AP && params->mbssid_config.tx_wdev) { err = ieee80211_set_ap_mbssid_options(sdata, ¶ms->mbssid_config, link_conf); if (err) return err; } err = ieee80211_link_use_channel(link, &chanreq, IEEE80211_CHANCTX_SHARED); if (!err) ieee80211_link_copy_chanctx_to_vlans(link, false); if (err) { link_conf->beacon_int = prev_beacon_int; return err; } /* * Apply control port protocol, this allows us to * not encrypt dynamic WEP control frames. */ sdata->control_port_protocol = params->crypto.control_port_ethertype; sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; sdata->control_port_over_nl80211 = params->crypto.control_port_over_nl80211; sdata->control_port_no_preauth = params->crypto.control_port_no_preauth; list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { vlan->control_port_protocol = params->crypto.control_port_ethertype; vlan->control_port_no_encrypt = params->crypto.control_port_no_encrypt; vlan->control_port_over_nl80211 = params->crypto.control_port_over_nl80211; vlan->control_port_no_preauth = params->crypto.control_port_no_preauth; } link_conf->dtim_period = params->dtim_period; link_conf->enable_beacon = true; link_conf->allow_p2p_go_ps = sdata->vif.p2p; link_conf->twt_responder = params->twt_responder; link_conf->he_obss_pd = params->he_obss_pd; link_conf->he_bss_color = params->beacon.he_bss_color; sdata->vif.cfg.s1g = params->chandef.chan->band == NL80211_BAND_S1GHZ; sdata->vif.cfg.ssid_len = params->ssid_len; if (params->ssid_len) memcpy(sdata->vif.cfg.ssid, params->ssid, params->ssid_len); link_conf->hidden_ssid = (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); memset(&link_conf->p2p_noa_attr, 0, sizeof(link_conf->p2p_noa_attr)); link_conf->p2p_noa_attr.oppps_ctwindow = params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; if (params->p2p_opp_ps) link_conf->p2p_noa_attr.oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT; sdata->beacon_rate_set = false; if (wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { for (i = 0; i < NUM_NL80211_BANDS; i++) { sdata->beacon_rateidx_mask[i] = params->beacon_rate.control[i].legacy; if (sdata->beacon_rateidx_mask[i]) sdata->beacon_rate_set = true; } } if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) link_conf->beacon_tx_rate = params->beacon_rate; err = ieee80211_assign_beacon(sdata, link, ¶ms->beacon, NULL, NULL, &changed); if (err < 0) goto error; err = ieee80211_set_fils_discovery(sdata, ¶ms->fils_discovery, link, link_conf, &changed); if (err < 0) goto error; err = ieee80211_set_unsol_bcast_probe_resp(sdata, ¶ms->unsol_bcast_probe_resp, link, link_conf, &changed); if (err < 0) goto error; err = drv_start_ap(sdata->local, sdata, link_conf); if (err) { old = sdata_dereference(link->u.ap.beacon, sdata); if (old) kfree_rcu(old, rcu_head); RCU_INIT_POINTER(link->u.ap.beacon, NULL); if (ieee80211_num_beaconing_links(sdata) == 0) sdata->u.ap.active = false; goto error; } ieee80211_recalc_dtim(local, sdata); ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID); ieee80211_link_info_change_notify(sdata, link, changed); if (ieee80211_num_beaconing_links(sdata) <= 1) netif_carrier_on(dev); list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) netif_carrier_on(vlan->dev); return 0; error: ieee80211_link_release_channel(link); return err; } static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ap_update *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link; struct cfg80211_beacon_data *beacon = ¶ms->beacon; struct beacon_data *old; int err; struct ieee80211_bss_conf *link_conf; u64 changed = 0; lockdep_assert_wiphy(wiphy); link = sdata_dereference(sdata->link[beacon->link_id], sdata); if (!link) return -ENOLINK; link_conf = link->conf; /* don't allow changing the beacon while a countdown is in place - offset * of channel switch counter may change */ if (link_conf->csa_active || link_conf->color_change_active) return -EBUSY; old = sdata_dereference(link->u.ap.beacon, sdata); if (!old) return -ENOENT; err = ieee80211_assign_beacon(sdata, link, beacon, NULL, NULL, &changed); if (err < 0) return err; err = ieee80211_set_fils_discovery(sdata, ¶ms->fils_discovery, link, link_conf, &changed); if (err < 0) return err; err = ieee80211_set_unsol_bcast_probe_resp(sdata, ¶ms->unsol_bcast_probe_resp, link, link_conf, &changed); if (err < 0) return err; if (beacon->he_bss_color_valid && beacon->he_bss_color.enabled != link_conf->he_bss_color.enabled) { link_conf->he_bss_color.enabled = beacon->he_bss_color.enabled; changed |= BSS_CHANGED_HE_BSS_COLOR; } ieee80211_link_info_change_notify(sdata, link, changed); return 0; } static void ieee80211_free_next_beacon(struct ieee80211_link_data *link) { if (!link->u.ap.next_beacon) return; kfree(link->u.ap.next_beacon->mbssid_ies); kfree(link->u.ap.next_beacon->rnr_ies); kfree(link->u.ap.next_beacon); link->u.ap.next_beacon = NULL; } static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_sub_if_data *vlan; struct ieee80211_local *local = sdata->local; struct beacon_data *old_beacon; struct probe_resp *old_probe_resp; struct fils_discovery_data *old_fils_discovery; struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp; struct cfg80211_chan_def chandef; struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); struct ieee80211_bss_conf *link_conf = link->conf; LIST_HEAD(keys); lockdep_assert_wiphy(local->hw.wiphy); old_beacon = sdata_dereference(link->u.ap.beacon, sdata); if (!old_beacon) return -ENOENT; old_probe_resp = sdata_dereference(link->u.ap.probe_resp, sdata); old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery, sdata); old_unsol_bcast_probe_resp = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata); /* abort any running channel switch or color change */ link_conf->csa_active = false; link_conf->color_change_active = false; ieee80211_vif_unblock_queues_csa(sdata); ieee80211_free_next_beacon(link); /* turn off carrier for this interface and dependent VLANs */ list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) netif_carrier_off(vlan->dev); if (ieee80211_num_beaconing_links(sdata) <= 1) { netif_carrier_off(dev); sdata->u.ap.active = false; } /* remove beacon and probe response */ RCU_INIT_POINTER(link->u.ap.beacon, NULL); RCU_INIT_POINTER(link->u.ap.probe_resp, NULL); RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL); RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL); kfree_rcu(old_beacon, rcu_head); if (old_probe_resp) kfree_rcu(old_probe_resp, rcu_head); if (old_fils_discovery) kfree_rcu(old_fils_discovery, rcu_head); if (old_unsol_bcast_probe_resp) kfree_rcu(old_unsol_bcast_probe_resp, rcu_head); kfree(link_conf->ftmr_params); link_conf->ftmr_params = NULL; sdata->vif.mbssid_tx_vif = NULL; link_conf->bssid_index = 0; link_conf->nontransmitted = false; link_conf->ema_ap = false; link_conf->bssid_indicator = 0; __sta_info_flush(sdata, true, link_id, NULL); ieee80211_remove_link_keys(link, &keys); if (!list_empty(&keys)) { synchronize_net(); ieee80211_free_key_list(local, &keys); } link_conf->enable_beacon = false; sdata->beacon_rate_set = false; sdata->vif.cfg.ssid_len = 0; clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_BEACON_ENABLED); if (sdata->wdev.links[link_id].cac_started) { chandef = link_conf->chanreq.oper; wiphy_delayed_work_cancel(wiphy, &link->dfs_cac_timer_work); cfg80211_cac_event(sdata->dev, &chandef, NL80211_RADAR_CAC_ABORTED, GFP_KERNEL, link_id); } drv_stop_ap(sdata->local, sdata, link_conf); /* free all potentially still buffered bcast frames */ local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); ieee80211_link_copy_chanctx_to_vlans(link, true); ieee80211_link_release_channel(link); return 0; } static int sta_apply_auth_flags(struct ieee80211_local *local, struct sta_info *sta, u32 mask, u32 set) { int ret; if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && !test_sta_flag(sta, WLAN_STA_AUTH)) { ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && set & BIT(NL80211_STA_FLAG_ASSOCIATED) && !test_sta_flag(sta, WLAN_STA_ASSOC)) { /* * When peer becomes associated, init rate control as * well. Some drivers require rate control initialized * before drv_sta_state() is called. */ if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) rate_control_rate_init_all_links(sta); ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); else ret = 0; if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && test_sta_flag(sta, WLAN_STA_ASSOC)) { ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && test_sta_flag(sta, WLAN_STA_AUTH)) { ret = sta_info_move_state(sta, IEEE80211_STA_NONE); if (ret) return ret; } return 0; } static void sta_apply_mesh_params(struct ieee80211_local *local, struct sta_info *sta, struct station_parameters *params) { #ifdef CONFIG_MAC80211_MESH struct ieee80211_sub_if_data *sdata = sta->sdata; u64 changed = 0; if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { switch (params->plink_state) { case NL80211_PLINK_ESTAB: if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) changed = mesh_plink_inc_estab_count(sdata); sta->mesh->plink_state = params->plink_state; sta->mesh->aid = params->peer_aid; ieee80211_mps_sta_status_update(sta); changed |= ieee80211_mps_set_sta_local_pm(sta, sdata->u.mesh.mshcfg.power_mode); ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg); /* init at low value */ ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10); break; case NL80211_PLINK_LISTEN: case NL80211_PLINK_BLOCKED: case NL80211_PLINK_OPN_SNT: case NL80211_PLINK_OPN_RCVD: case NL80211_PLINK_CNF_RCVD: case NL80211_PLINK_HOLDING: if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) changed = mesh_plink_dec_estab_count(sdata); sta->mesh->plink_state = params->plink_state; ieee80211_mps_sta_status_update(sta); changed |= ieee80211_mps_set_sta_local_pm(sta, NL80211_MESH_POWER_UNKNOWN); break; default: /* nothing */ break; } } switch (params->plink_action) { case NL80211_PLINK_ACTION_NO_ACTION: /* nothing */ break; case NL80211_PLINK_ACTION_OPEN: changed |= mesh_plink_open(sta); break; case NL80211_PLINK_ACTION_BLOCK: changed |= mesh_plink_block(sta); break; } if (params->local_pm) changed |= ieee80211_mps_set_sta_local_pm(sta, params->local_pm); ieee80211_mbss_info_change_notify(sdata, changed); #endif } enum sta_link_apply_mode { STA_LINK_MODE_NEW, STA_LINK_MODE_STA_MODIFY, STA_LINK_MODE_LINK_MODIFY, }; static int sta_link_apply_parameters(struct ieee80211_local *local, struct sta_info *sta, enum sta_link_apply_mode mode, struct link_station_parameters *params) { struct ieee80211_supported_band *sband; struct ieee80211_sub_if_data *sdata = sta->sdata; u32 link_id = params->link_id < 0 ? 0 : params->link_id; struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); struct link_sta_info *link_sta = rcu_dereference_protected(sta->link[link_id], lockdep_is_held(&local->hw.wiphy->mtx)); bool changes = params->link_mac || params->txpwr_set || params->supported_rates_len || params->ht_capa || params->vht_capa || params->he_capa || params->eht_capa || params->opmode_notif_used; switch (mode) { case STA_LINK_MODE_NEW: if (!params->link_mac) return -EINVAL; break; case STA_LINK_MODE_LINK_MODIFY: break; case STA_LINK_MODE_STA_MODIFY: if (params->link_id >= 0) break; if (!changes) return 0; break; } if (!link || !link_sta) return -EINVAL; sband = ieee80211_get_link_sband(link); if (!sband) return -EINVAL; if (params->link_mac) { if (mode == STA_LINK_MODE_NEW) { memcpy(link_sta->addr, params->link_mac, ETH_ALEN); memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN); } else if (!ether_addr_equal(link_sta->addr, params->link_mac)) { return -EINVAL; } } if (params->txpwr_set) { int ret; link_sta->pub->txpwr.type = params->txpwr.type; if (params->txpwr.type == NL80211_TX_POWER_LIMITED) link_sta->pub->txpwr.power = params->txpwr.power; ret = drv_sta_set_txpwr(local, sdata, sta); if (ret) return ret; } if (params->supported_rates && params->supported_rates_len && !ieee80211_parse_bitrates(link->conf->chanreq.oper.width, sband, params->supported_rates, params->supported_rates_len, &link_sta->pub->supp_rates[sband->band])) return -EINVAL; if (params->ht_capa) ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, params->ht_capa, link_sta); /* VHT can override some HT caps such as the A-MSDU max length */ if (params->vht_capa) ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, params->vht_capa, NULL, link_sta); if (params->he_capa) ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, (void *)params->he_capa, params->he_capa_len, (void *)params->he_6ghz_capa, link_sta); if (params->he_capa && params->eht_capa) ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband, (u8 *)params->he_capa, params->he_capa_len, params->eht_capa, params->eht_capa_len, link_sta); ieee80211_sta_init_nss(link_sta); if (params->opmode_notif_used) { /* returned value is only needed for rc update, but the * rc isn't initialized here yet, so ignore it */ __ieee80211_vht_handle_opmode(sdata, link_sta, params->opmode_notif, sband->band); } return 0; } static int sta_apply_parameters(struct ieee80211_local *local, struct sta_info *sta, struct station_parameters *params) { struct ieee80211_sub_if_data *sdata = sta->sdata; u32 mask, set; int ret = 0; mask = params->sta_flags_mask; set = params->sta_flags_set; if (ieee80211_vif_is_mesh(&sdata->vif)) { /* * In mesh mode, ASSOCIATED isn't part of the nl80211 * API but must follow AUTHENTICATED for driver state. */ if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) set |= BIT(NL80211_STA_FLAG_ASSOCIATED); } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { /* * TDLS -- everything follows authorized, but * only becoming authorized is possible, not * going back */ if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | BIT(NL80211_STA_FLAG_ASSOCIATED); mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | BIT(NL80211_STA_FLAG_ASSOCIATED); } } if (mask & BIT(NL80211_STA_FLAG_WME) && local->hw.queues >= IEEE80211_NUM_ACS) sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); /* auth flags will be set later for TDLS, * and for unassociated stations that move to associated */ if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { ret = sta_apply_auth_flags(local, sta, mask, set); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); else clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); } if (mask & BIT(NL80211_STA_FLAG_MFP)) { sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); if (set & BIT(NL80211_STA_FLAG_MFP)) set_sta_flag(sta, WLAN_STA_MFP); else clear_sta_flag(sta, WLAN_STA_MFP); } if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) set_sta_flag(sta, WLAN_STA_TDLS_PEER); else clear_sta_flag(sta, WLAN_STA_TDLS_PEER); } if (mask & BIT(NL80211_STA_FLAG_SPP_AMSDU)) sta->sta.spp_amsdu = set & BIT(NL80211_STA_FLAG_SPP_AMSDU); /* mark TDLS channel switch support, if the AP allows it */ if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && !sdata->deflink.u.mgd.tdls_chan_switch_prohibited && params->ext_capab_len >= 4 && params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && !sdata->u.mgd.tdls_wider_bw_prohibited && ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && params->ext_capab_len >= 8 && params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { sta->sta.uapsd_queues = params->uapsd_queues; sta->sta.max_sp = params->max_sp; } ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab, params->ext_capab_len); /* * cfg80211 validates this (1-2007) and allows setting the AID * only when creating a new station entry */ if (params->aid) sta->sta.aid = params->aid; /* * Some of the following updates would be racy if called on an * existing station, via ieee80211_change_station(). However, * all such changes are rejected by cfg80211 except for updates * changing the supported rates on an existing but not yet used * TDLS peer. */ if (params->listen_interval >= 0) sta->listen_interval = params->listen_interval; ret = sta_link_apply_parameters(local, sta, STA_LINK_MODE_STA_MODIFY, ¶ms->link_sta_params); if (ret) return ret; if (params->support_p2p_ps >= 0) sta->sta.support_p2p_ps = params->support_p2p_ps; if (ieee80211_vif_is_mesh(&sdata->vif)) sta_apply_mesh_params(local, sta, params); if (params->airtime_weight) sta->airtime_weight = params->airtime_weight; /* set the STA state after all sta info from usermode has been set */ if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { ret = sta_apply_auth_flags(local, sta, mask, set); if (ret) return ret; } /* Mark the STA as MLO if MLD MAC address is available */ if (params->link_sta_params.mld_mac) sta->sta.mlo = true; return 0; } static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, const u8 *mac, struct station_parameters *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *sdata; int err; lockdep_assert_wiphy(local->hw.wiphy); if (params->vlan) { sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && sdata->vif.type != NL80211_IFTYPE_AP) return -EINVAL; } else sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (ether_addr_equal(mac, sdata->vif.addr)) return -EINVAL; if (!is_valid_ether_addr(mac)) return -EINVAL; if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) && sdata->vif.type == NL80211_IFTYPE_STATION && !sdata->u.mgd.associated) return -EINVAL; /* * If we have a link ID, it can be a non-MLO station on an AP MLD, * but we need to have a link_mac in that case as well, so use the * STA's MAC address in that case. */ if (params->link_sta_params.link_id >= 0) sta = sta_info_alloc_with_link(sdata, mac, params->link_sta_params.link_id, params->link_sta_params.link_mac ?: mac, GFP_KERNEL); else sta = sta_info_alloc(sdata, mac, GFP_KERNEL); if (!sta) return -ENOMEM; if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) sta->sta.tdls = true; /* Though the mutex is not needed here (since the station is not * visible yet), sta_apply_parameters (and inner functions) require * the mutex due to other paths. */ err = sta_apply_parameters(local, sta, params); if (err) { sta_info_free(local, sta); return err; } /* * for TDLS and for unassociated station, rate control should be * initialized only when rates are known and station is marked * authorized/associated */ if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && test_sta_flag(sta, WLAN_STA_ASSOC)) rate_control_rate_init_all_links(sta); return sta_info_insert(sta); } static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, struct station_del_parameters *params) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (params->mac) return sta_info_destroy_addr_bss(sdata, params->mac); sta_info_flush(sdata, params->link_id); return 0; } static int ieee80211_change_station(struct wiphy *wiphy, struct net_device *dev, const u8 *mac, struct station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *vlansdata; enum cfg80211_station_type statype; int err; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, mac); if (!sta) return -ENOENT; switch (sdata->vif.type) { case NL80211_IFTYPE_MESH_POINT: if (sdata->u.mesh.user_mpm) statype = CFG80211_STA_MESH_PEER_USER; else statype = CFG80211_STA_MESH_PEER_KERNEL; break; case NL80211_IFTYPE_ADHOC: statype = CFG80211_STA_IBSS; break; case NL80211_IFTYPE_STATION: if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { statype = CFG80211_STA_AP_STA; break; } if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) statype = CFG80211_STA_TDLS_PEER_ACTIVE; else statype = CFG80211_STA_TDLS_PEER_SETUP; break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: if (test_sta_flag(sta, WLAN_STA_ASSOC)) statype = CFG80211_STA_AP_CLIENT; else statype = CFG80211_STA_AP_CLIENT_UNASSOC; break; default: return -EOPNOTSUPP; } err = cfg80211_check_station_change(wiphy, params, statype); if (err) return err; if (params->vlan && params->vlan != sta->sdata->dev) { vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (params->vlan->ieee80211_ptr->use_4addr) { if (vlansdata->u.vlan.sta) return -EBUSY; rcu_assign_pointer(vlansdata->u.vlan.sta, sta); __ieee80211_check_fast_rx_iface(vlansdata); drv_sta_set_4addr(local, sta->sdata, &sta->sta, true); } if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && sta->sdata->u.vlan.sta) RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) ieee80211_vif_dec_num_mcast(sta->sdata); sta->sdata = vlansdata; ieee80211_check_fast_rx(sta); ieee80211_check_fast_xmit(sta); if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) { ieee80211_vif_inc_num_mcast(sta->sdata); cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr); } } err = sta_apply_parameters(local, sta, params); if (err) return err; if (sdata->vif.type == NL80211_IFTYPE_STATION && params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { ieee80211_recalc_ps(local); ieee80211_recalc_ps_vif(sdata); } return 0; } #ifdef CONFIG_MAC80211_MESH static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, const u8 *dst, const u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } mpath = mesh_path_add(sdata, dst); if (IS_ERR(mpath)) { rcu_read_unlock(); return PTR_ERR(mpath); } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, const u8 *dst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (dst) return mesh_path_del(sdata, dst); mesh_path_flush_by_iface(sdata); return 0; } static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, const u8 *dst, const u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } mpath = mesh_path_lookup(sdata, dst); if (!mpath) { rcu_read_unlock(); return -ENOENT; } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, struct mpath_info *pinfo) { struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); if (next_hop_sta) memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); else eth_zero_addr(next_hop); memset(pinfo, 0, sizeof(*pinfo)); pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; pinfo->filled = MPATH_INFO_FRAME_QLEN | MPATH_INFO_SN | MPATH_INFO_METRIC | MPATH_INFO_EXPTIME | MPATH_INFO_DISCOVERY_TIMEOUT | MPATH_INFO_DISCOVERY_RETRIES | MPATH_INFO_FLAGS | MPATH_INFO_HOP_COUNT | MPATH_INFO_PATH_CHANGE; pinfo->frame_qlen = mpath->frame_queue.qlen; pinfo->sn = mpath->sn; pinfo->metric = mpath->metric; if (time_before(jiffies, mpath->exp_time)) pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); pinfo->discovery_timeout = jiffies_to_msecs(mpath->discovery_timeout); pinfo->discovery_retries = mpath->discovery_retries; if (mpath->flags & MESH_PATH_ACTIVE) pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; if (mpath->flags & MESH_PATH_RESOLVING) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; if (mpath->flags & MESH_PATH_SN_VALID) pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; if (mpath->flags & MESH_PATH_FIXED) pinfo->flags |= NL80211_MPATH_FLAG_FIXED; if (mpath->flags & MESH_PATH_RESOLVED) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; pinfo->hop_count = mpath->hop_count; pinfo->path_change_count = mpath->path_change_count; } static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup(sdata, dst); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup_by_idx(sdata, idx); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, struct mpath_info *pinfo) { memset(pinfo, 0, sizeof(*pinfo)); memcpy(mpp, mpath->mpp, ETH_ALEN); pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; } static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *mpp, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mpp_path_lookup(sdata, dst); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpp_set_pinfo(mpath, mpp, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *dst, u8 *mpp, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mpp_path_lookup_by_idx(sdata, idx); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpp_set_pinfo(mpath, mpp, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_get_mesh_config(struct wiphy *wiphy, struct net_device *dev, struct mesh_config *conf) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); return 0; } static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) { return (mask >> (parm-1)) & 0x1; } static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, const struct mesh_setup *setup) { u8 *new_ie; struct ieee80211_sub_if_data *sdata = container_of(ifmsh, struct ieee80211_sub_if_data, u.mesh); int i; /* allocate information elements */ new_ie = NULL; if (setup->ie_len) { new_ie = kmemdup(setup->ie, setup->ie_len, GFP_KERNEL); if (!new_ie) return -ENOMEM; } ifmsh->ie_len = setup->ie_len; ifmsh->ie = new_ie; /* now copy the rest of the setup parameters */ ifmsh->mesh_id_len = setup->mesh_id_len; memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); ifmsh->mesh_sp_id = setup->sync_method; ifmsh->mesh_pp_id = setup->path_sel_proto; ifmsh->mesh_pm_id = setup->path_metric; ifmsh->user_mpm = setup->user_mpm; ifmsh->mesh_auth_id = setup->auth_id; ifmsh->security = IEEE80211_MESH_SEC_NONE; ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs; if (setup->is_authenticated) ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; if (setup->is_secure) ifmsh->security |= IEEE80211_MESH_SEC_SECURED; /* mcast rate setting in Mesh Node */ memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, sizeof(setup->mcast_rate)); sdata->vif.bss_conf.basic_rates = setup->basic_rates; sdata->vif.bss_conf.beacon_int = setup->beacon_interval; sdata->vif.bss_conf.dtim_period = setup->dtim_period; sdata->beacon_rate_set = false; if (wiphy_ext_feature_isset(sdata->local->hw.wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { for (i = 0; i < NUM_NL80211_BANDS; i++) { sdata->beacon_rateidx_mask[i] = setup->beacon_rate.control[i].legacy; if (sdata->beacon_rateidx_mask[i]) sdata->beacon_rate_set = true; } } return 0; } static int ieee80211_update_mesh_config(struct wiphy *wiphy, struct net_device *dev, u32 mask, const struct mesh_config *nconf) { struct mesh_config *conf; struct ieee80211_sub_if_data *sdata; struct ieee80211_if_mesh *ifmsh; sdata = IEEE80211_DEV_TO_SUB_IF(dev); ifmsh = &sdata->u.mesh; /* Set the config options which we are interested in setting */ conf = &(sdata->u.mesh.mshcfg); if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) conf->dot11MeshTTL = nconf->dot11MeshTTL; if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) conf->element_ttl = nconf->element_ttl; if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { if (ifmsh->user_mpm) return -EBUSY; conf->auto_open_plinks = nconf->auto_open_plinks; } if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) conf->dot11MeshNbrOffsetMaxNeighbor = nconf->dot11MeshNbrOffsetMaxNeighbor; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) conf->dot11MeshHWMPmaxPREQretries = nconf->dot11MeshHWMPmaxPREQretries; if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) conf->path_refresh_time = nconf->path_refresh_time; if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) conf->min_discovery_timeout = nconf->min_discovery_timeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) conf->dot11MeshHWMPactivePathTimeout = nconf->dot11MeshHWMPactivePathTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) conf->dot11MeshHWMPpreqMinInterval = nconf->dot11MeshHWMPpreqMinInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) conf->dot11MeshHWMPperrMinInterval = nconf->dot11MeshHWMPperrMinInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, mask)) conf->dot11MeshHWMPnetDiameterTraversalTime = nconf->dot11MeshHWMPnetDiameterTraversalTime; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; ieee80211_mesh_root_setup(ifmsh); } if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { /* our current gate announcement implementation rides on root * announcements, so require this ifmsh to also be a root node * */ if (nconf->dot11MeshGateAnnouncementProtocol && !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; ieee80211_mesh_root_setup(ifmsh); } conf->dot11MeshGateAnnouncementProtocol = nconf->dot11MeshGateAnnouncementProtocol; } if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) conf->dot11MeshHWMPRannInterval = nconf->dot11MeshHWMPRannInterval; if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) conf->dot11MeshForwarding = nconf->dot11MeshForwarding; if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { /* our RSSI threshold implementation is supported only for * devices that report signal in dBm. */ if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) return -EOPNOTSUPP; conf->rssi_threshold = nconf->rssi_threshold; } if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { conf->ht_opmode = nconf->ht_opmode; sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_HT); } if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) conf->dot11MeshHWMPactivePathToRootTimeout = nconf->dot11MeshHWMPactivePathToRootTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) conf->dot11MeshHWMProotInterval = nconf->dot11MeshHWMProotInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) conf->dot11MeshHWMPconfirmationInterval = nconf->dot11MeshHWMPconfirmationInterval; if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { conf->power_mode = nconf->power_mode; ieee80211_mps_local_status_update(sdata); } if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) conf->dot11MeshAwakeWindowDuration = nconf->dot11MeshAwakeWindowDuration; if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) conf->plink_timeout = nconf->plink_timeout; if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask)) conf->dot11MeshConnectedToMeshGate = nconf->dot11MeshConnectedToMeshGate; if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask)) conf->dot11MeshNolearn = nconf->dot11MeshNolearn; if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask)) conf->dot11MeshConnectedToAuthServer = nconf->dot11MeshConnectedToAuthServer; ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); return 0; } static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, const struct mesh_config *conf, const struct mesh_setup *setup) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_chan_req chanreq = { .oper = setup->chandef }; struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; int err; lockdep_assert_wiphy(sdata->local->hw.wiphy); memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); err = copy_mesh_setup(ifmsh, setup); if (err) return err; sdata->control_port_over_nl80211 = setup->control_port_over_nl80211; /* can mesh use other SMPS modes? */ sdata->deflink.smps_mode = IEEE80211_SMPS_OFF; sdata->deflink.needed_rx_chains = sdata->local->rx_chains; err = ieee80211_link_use_channel(&sdata->deflink, &chanreq, IEEE80211_CHANCTX_SHARED); if (err) return err; return ieee80211_start_mesh(sdata); } static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); lockdep_assert_wiphy(sdata->local->hw.wiphy); ieee80211_stop_mesh(sdata); ieee80211_link_release_channel(&sdata->deflink); kfree(sdata->u.mesh.ie); return 0; } #endif static int ieee80211_change_bss(struct wiphy *wiphy, struct net_device *dev, struct bss_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link; struct ieee80211_supported_band *sband; u64 changed = 0; link = ieee80211_link_or_deflink(sdata, params->link_id, true); if (IS_ERR(link)) return PTR_ERR(link); if (!sdata_dereference(link->u.ap.beacon, sdata)) return -ENOENT; sband = ieee80211_get_link_sband(link); if (!sband) return -EINVAL; if (params->basic_rates) { if (!ieee80211_parse_bitrates(link->conf->chanreq.oper.width, wiphy->bands[sband->band], params->basic_rates, params->basic_rates_len, &link->conf->basic_rates)) return -EINVAL; changed |= BSS_CHANGED_BASIC_RATES; ieee80211_check_rate_mask(link); } if (params->use_cts_prot >= 0) { link->conf->use_cts_prot = params->use_cts_prot; changed |= BSS_CHANGED_ERP_CTS_PROT; } if (params->use_short_preamble >= 0) { link->conf->use_short_preamble = params->use_short_preamble; changed |= BSS_CHANGED_ERP_PREAMBLE; } if (!link->conf->use_short_slot && (sband->band == NL80211_BAND_5GHZ || sband->band == NL80211_BAND_6GHZ)) { link->conf->use_short_slot = true; changed |= BSS_CHANGED_ERP_SLOT; } if (params->use_short_slot_time >= 0) { link->conf->use_short_slot = params->use_short_slot_time; changed |= BSS_CHANGED_ERP_SLOT; } if (params->ap_isolate >= 0) { if (params->ap_isolate) sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; else sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; ieee80211_check_fast_rx_iface(sdata); } if (params->ht_opmode >= 0) { link->conf->ht_operation_mode = (u16)params->ht_opmode; changed |= BSS_CHANGED_HT; } if (params->p2p_ctwindow >= 0) { link->conf->p2p_noa_attr.oppps_ctwindow &= ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; link->conf->p2p_noa_attr.oppps_ctwindow |= params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; changed |= BSS_CHANGED_P2P_PS; } if (params->p2p_opp_ps > 0) { link->conf->p2p_noa_attr.oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT; changed |= BSS_CHANGED_P2P_PS; } else if (params->p2p_opp_ps == 0) { link->conf->p2p_noa_attr.oppps_ctwindow &= ~IEEE80211_P2P_OPPPS_ENABLE_BIT; changed |= BSS_CHANGED_P2P_PS; } ieee80211_link_info_change_notify(sdata, link, changed); return 0; } static int ieee80211_set_txq_params(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_txq_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, params->link_id, true); struct ieee80211_tx_queue_params p; if (!local->ops->conf_tx) return -EOPNOTSUPP; if (local->hw.queues < IEEE80211_NUM_ACS) return -EOPNOTSUPP; if (IS_ERR(link)) return PTR_ERR(link); memset(&p, 0, sizeof(p)); p.aifs = params->aifs; p.cw_max = params->cwmax; p.cw_min = params->cwmin; p.txop = params->txop; /* * Setting tx queue params disables u-apsd because it's only * called in master mode. */ p.uapsd = false; ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac); link->tx_conf[params->ac] = p; if (drv_conf_tx(local, link, params->ac, &p)) { wiphy_debug(local->hw.wiphy, "failed to set TX queue parameters for AC %d\n", params->ac); return -EINVAL; } ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_QOS); return 0; } #ifdef CONFIG_PM static int ieee80211_suspend(struct wiphy *wiphy, struct cfg80211_wowlan *wowlan) { return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); } static int ieee80211_resume(struct wiphy *wiphy) { return __ieee80211_resume(wiphy_priv(wiphy)); } #else #define ieee80211_suspend NULL #define ieee80211_resume NULL #endif static int ieee80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *req) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); switch (ieee80211_vif_type_p2p(&sdata->vif)) { case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_P2P_DEVICE: break; case NL80211_IFTYPE_P2P_GO: if (sdata->local->ops->hw_scan) break; /* * FIXME: implement NoA while scanning in software, * for now fall through to allow scanning only when * beaconing hasn't been configured yet */ fallthrough; case NL80211_IFTYPE_AP: /* * If the scan has been forced (and the driver supports * forcing), don't care about being beaconing already. * This will create problems to the attached stations (e.g. all * the frames sent while scanning on other channel will be * lost) */ if (sdata->deflink.u.ap.beacon && (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || !(req->flags & NL80211_SCAN_FLAG_AP))) return -EOPNOTSUPP; break; case NL80211_IFTYPE_NAN: default: return -EOPNOTSUPP; } return ieee80211_request_scan(sdata, req); } static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) { ieee80211_scan_cancel(wiphy_priv(wiphy)); } static int ieee80211_sched_scan_start(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_sched_scan_request *req) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!sdata->local->ops->sched_scan_start) return -EOPNOTSUPP; return ieee80211_request_sched_scan_start(sdata, req); } static int ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, u64 reqid) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->sched_scan_stop) return -EOPNOTSUPP; return ieee80211_request_sched_scan_stop(local); } static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_auth_request *req) { return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_assoc_request *req) { return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_deauth_request *req) { return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_disassoc_request *req) { return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ibss_params *params) { return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); } static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) { return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); } static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, struct ocb_setup *setup) { return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); } static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) { return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); } static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, int rate[NUM_NL80211_BANDS]) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(sdata->vif.bss_conf.mcast_rate, rate, sizeof(int) * NUM_NL80211_BANDS); if (ieee80211_sdata_running(sdata)) ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_MCAST_RATE); return 0; } static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) { struct ieee80211_local *local = wiphy_priv(wiphy); int err; if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { ieee80211_check_fast_xmit_all(local); err = drv_set_frag_threshold(local, wiphy->frag_threshold); if (err) { ieee80211_check_fast_xmit_all(local); return err; } } if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || (changed & WIPHY_PARAM_DYN_ACK)) { s16 coverage_class; coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? wiphy->coverage_class : -1; err = drv_set_coverage_class(local, coverage_class); if (err) return err; } if (changed & WIPHY_PARAM_RTS_THRESHOLD) { err = drv_set_rts_threshold(local, wiphy->rts_threshold); if (err) return err; } if (changed & WIPHY_PARAM_RETRY_SHORT) { if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) return -EINVAL; local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; } if (changed & WIPHY_PARAM_RETRY_LONG) { if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) return -EINVAL; local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; } if (changed & (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); if (changed & (WIPHY_PARAM_TXQ_LIMIT | WIPHY_PARAM_TXQ_MEMORY_LIMIT | WIPHY_PARAM_TXQ_QUANTUM)) ieee80211_txq_set_params(local); return 0; } static int ieee80211_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev, enum nl80211_tx_power_setting type, int mbm) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; enum nl80211_tx_power_setting txp_type = type; bool update_txp_type = false; bool has_monitor = false; int user_power_level; int old_power = local->user_power_level; lockdep_assert_wiphy(local->hw.wiphy); switch (type) { case NL80211_TX_POWER_AUTOMATIC: user_power_level = IEEE80211_UNSET_POWER_LEVEL; txp_type = NL80211_TX_POWER_LIMITED; break; case NL80211_TX_POWER_LIMITED: case NL80211_TX_POWER_FIXED: if (mbm < 0 || (mbm % 100)) return -EOPNOTSUPP; user_power_level = MBM_TO_DBM(mbm); break; default: return -EINVAL; } if (wdev) { sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (sdata->vif.type == NL80211_IFTYPE_MONITOR && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) return -EOPNOTSUPP; sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (!sdata) return -EOPNOTSUPP; } for (int link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) continue; link->user_power_level = user_power_level; if (txp_type != link->conf->txpower_type) { update_txp_type = true; link->conf->txpower_type = txp_type; } ieee80211_recalc_txpower(link, update_txp_type); } return 0; } local->user_power_level = user_power_level; list_for_each_entry(sdata, &local->interfaces, list) { if (sdata->vif.type == NL80211_IFTYPE_MONITOR && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { has_monitor = true; continue; } for (int link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) continue; link->user_power_level = local->user_power_level; if (txp_type != link->conf->txpower_type) update_txp_type = true; link->conf->txpower_type = txp_type; } } list_for_each_entry(sdata, &local->interfaces, list) { if (sdata->vif.type == NL80211_IFTYPE_MONITOR && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) continue; for (int link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) continue; ieee80211_recalc_txpower(link, update_txp_type); } } if (has_monitor) { sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { sdata->deflink.user_power_level = local->user_power_level; if (txp_type != sdata->vif.bss_conf.txpower_type) update_txp_type = true; sdata->vif.bss_conf.txpower_type = txp_type; ieee80211_recalc_txpower(&sdata->deflink, update_txp_type); } } if (local->emulate_chanctx && (old_power != local->user_power_level)) ieee80211_hw_conf_chan(local); return 0; } static int ieee80211_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev, unsigned int link_id, int *dbm) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_link_data *link_data; if (local->ops->get_txpower && (sdata->flags & IEEE80211_SDATA_IN_DRIVER)) return drv_get_txpower(local, sdata, link_id, dbm); if (local->emulate_chanctx) { *dbm = local->hw.conf.power_level; } else { link_data = wiphy_dereference(wiphy, sdata->link[link_id]); if (link_data) *dbm = link_data->conf->txpower; else return -ENOLINK; } /* INT_MIN indicates no power level was set yet */ if (*dbm == INT_MIN) return -EINVAL; return 0; } static void ieee80211_rfkill_poll(struct wiphy *wiphy) { struct ieee80211_local *local = wiphy_priv(wiphy); drv_rfkill_poll(local); } #ifdef CONFIG_NL80211_TESTMODE static int ieee80211_testmode_cmd(struct wiphy *wiphy, struct wireless_dev *wdev, void *data, int len) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_vif *vif = NULL; if (!local->ops->testmode_cmd) return -EOPNOTSUPP; if (wdev) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) vif = &sdata->vif; } return local->ops->testmode_cmd(&local->hw, vif, data, len); } static int ieee80211_testmode_dump(struct wiphy *wiphy, struct sk_buff *skb, struct netlink_callback *cb, void *data, int len) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->testmode_dump) return -EOPNOTSUPP; return local->ops->testmode_dump(&local->hw, skb, cb, data, len); } #endif int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, struct ieee80211_link_data *link, enum ieee80211_smps_mode smps_mode) { const u8 *ap; enum ieee80211_smps_mode old_req; int err; struct sta_info *sta; bool tdls_peer_found = false; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) return -EINVAL; if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) return 0; old_req = link->u.mgd.req_smps; link->u.mgd.req_smps = smps_mode; /* The driver indicated that EML is enabled for the interface, which * implies that SMPS flows towards the AP should be stopped. */ if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE) return 0; if (old_req == smps_mode && smps_mode != IEEE80211_SMPS_AUTOMATIC) return 0; /* * If not associated, or current association is not an HT * association, there's no need to do anything, just store * the new value until we associate. */ if (!sdata->u.mgd.associated || link->conf->chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT) return 0; ap = sdata->vif.cfg.ap_addr; rcu_read_lock(); list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) continue; tdls_peer_found = true; break; } rcu_read_unlock(); if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { if (tdls_peer_found || !sdata->u.mgd.powersave) smps_mode = IEEE80211_SMPS_OFF; else smps_mode = IEEE80211_SMPS_DYNAMIC; } /* send SM PS frame to AP */ err = ieee80211_send_smps_action(sdata, smps_mode, ap, ap, ieee80211_vif_is_mld(&sdata->vif) ? link->link_id : -1); if (err) link->u.mgd.req_smps = old_req; else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) ieee80211_teardown_tdls_peers(link); return err; } static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, bool enabled, int timeout) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); unsigned int link_id; if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) return -EOPNOTSUPP; if (enabled == sdata->u.mgd.powersave && timeout == local->dynamic_ps_forced_timeout) return 0; sdata->u.mgd.powersave = enabled; local->dynamic_ps_forced_timeout = timeout; /* no change, but if automatic follow powersave */ for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link; link = sdata_dereference(sdata->link[link_id], sdata); if (!link) continue; __ieee80211_request_smps_mgd(sdata, link, link->u.mgd.req_smps); } if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); ieee80211_recalc_ps(local); ieee80211_recalc_ps_vif(sdata); ieee80211_check_fast_rx_iface(sdata); return 0; } static void ieee80211_set_cqm_rssi_link(struct ieee80211_sub_if_data *sdata, struct ieee80211_link_data *link, s32 rssi_thold, u32 rssi_hyst, s32 rssi_low, s32 rssi_high) { struct ieee80211_bss_conf *conf; if (!link || !link->conf) return; conf = link->conf; if (rssi_thold && rssi_hyst && rssi_thold == conf->cqm_rssi_thold && rssi_hyst == conf->cqm_rssi_hyst) return; conf->cqm_rssi_thold = rssi_thold; conf->cqm_rssi_hyst = rssi_hyst; conf->cqm_rssi_low = rssi_low; conf->cqm_rssi_high = rssi_high; link->u.mgd.last_cqm_event_signal = 0; if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) return; if (sdata->u.mgd.associated && (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_CQM); } static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, struct net_device *dev, s32 rssi_thold, u32 rssi_hyst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_vif *vif = &sdata->vif; int link_id; if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER && !(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) return -EOPNOTSUPP; /* For MLD, handle CQM change on all the active links */ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); ieee80211_set_cqm_rssi_link(sdata, link, rssi_thold, rssi_hyst, 0, 0); } return 0; } static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy, struct net_device *dev, s32 rssi_low, s32 rssi_high) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_vif *vif = &sdata->vif; int link_id; if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER) return -EOPNOTSUPP; /* For MLD, handle CQM change on all the active links */ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); ieee80211_set_cqm_rssi_link(sdata, link, 0, 0, rssi_low, rssi_high); } return 0; } static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id, const u8 *addr, const struct cfg80211_bitrate_mask *mask) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); int i, ret; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; /* * If active validate the setting and reject it if it doesn't leave * at least one basic rate usable, since we really have to be able * to send something, and if we're an AP we have to be able to do * so at a basic rate so that all clients can receive it. */ if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) && sdata->vif.bss_conf.chanreq.oper.chan) { u32 basic_rates = sdata->vif.bss_conf.basic_rates; enum nl80211_band band; band = sdata->vif.bss_conf.chanreq.oper.chan->band; if (!(mask->control[band].legacy & basic_rates)) return -EINVAL; } if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { ret = drv_set_bitrate_mask(local, sdata, mask); if (ret) return ret; } for (i = 0; i < NUM_NL80211_BANDS; i++) { struct ieee80211_supported_band *sband = wiphy->bands[i]; int j; sdata->rc_rateidx_mask[i] = mask->control[i].legacy; memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, sizeof(mask->control[i].ht_mcs)); memcpy(sdata->rc_rateidx_vht_mcs_mask[i], mask->control[i].vht_mcs, sizeof(mask->control[i].vht_mcs)); sdata->rc_has_mcs_mask[i] = false; sdata->rc_has_vht_mcs_mask[i] = false; if (!sband) continue; for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) { sdata->rc_has_mcs_mask[i] = true; break; } } for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) { sdata->rc_has_vht_mcs_mask[i] = true; break; } } } return 0; } static int ieee80211_start_radar_detection(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_chan_def *chandef, u32 cac_time_ms, int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_chan_req chanreq = { .oper = *chandef }; struct ieee80211_local *local = sdata->local; struct ieee80211_link_data *link_data; int err; lockdep_assert_wiphy(local->hw.wiphy); if (!list_empty(&local->roc_list) || local->scanning) return -EBUSY; link_data = sdata_dereference(sdata->link[link_id], sdata); if (!link_data) return -ENOLINK; /* whatever, but channel contexts should not complain about that one */ link_data->smps_mode = IEEE80211_SMPS_OFF; link_data->needed_rx_chains = local->rx_chains; err = ieee80211_link_use_channel(link_data, &chanreq, IEEE80211_CHANCTX_SHARED); if (err) return err; wiphy_delayed_work_queue(wiphy, &link_data->dfs_cac_timer_work, msecs_to_jiffies(cac_time_ms)); return 0; } static void ieee80211_end_cac(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_link_data *link_data; lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(sdata, &local->interfaces, list) { link_data = sdata_dereference(sdata->link[link_id], sdata); if (!link_data) continue; wiphy_delayed_work_cancel(wiphy, &link_data->dfs_cac_timer_work); if (sdata->wdev.links[link_id].cac_started) { ieee80211_link_release_channel(link_data); sdata->wdev.links[link_id].cac_started = false; } } } static struct cfg80211_beacon_data * cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) { struct cfg80211_beacon_data *new_beacon; u8 *pos; int len; len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + beacon->proberesp_ies_len + beacon->assocresp_ies_len + beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len; if (beacon->mbssid_ies) len += ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies, beacon->rnr_ies, beacon->mbssid_ies->cnt); new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); if (!new_beacon) return NULL; if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) { new_beacon->mbssid_ies = kzalloc(struct_size(new_beacon->mbssid_ies, elem, beacon->mbssid_ies->cnt), GFP_KERNEL); if (!new_beacon->mbssid_ies) { kfree(new_beacon); return NULL; } if (beacon->rnr_ies && beacon->rnr_ies->cnt) { new_beacon->rnr_ies = kzalloc(struct_size(new_beacon->rnr_ies, elem, beacon->rnr_ies->cnt), GFP_KERNEL); if (!new_beacon->rnr_ies) { kfree(new_beacon->mbssid_ies); kfree(new_beacon); return NULL; } } } pos = (u8 *)(new_beacon + 1); if (beacon->head_len) { new_beacon->head_len = beacon->head_len; new_beacon->head = pos; memcpy(pos, beacon->head, beacon->head_len); pos += beacon->head_len; } if (beacon->tail_len) { new_beacon->tail_len = beacon->tail_len; new_beacon->tail = pos; memcpy(pos, beacon->tail, beacon->tail_len); pos += beacon->tail_len; } if (beacon->beacon_ies_len) { new_beacon->beacon_ies_len = beacon->beacon_ies_len; new_beacon->beacon_ies = pos; memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); pos += beacon->beacon_ies_len; } if (beacon->proberesp_ies_len) { new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; new_beacon->proberesp_ies = pos; memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); pos += beacon->proberesp_ies_len; } if (beacon->assocresp_ies_len) { new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; new_beacon->assocresp_ies = pos; memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); pos += beacon->assocresp_ies_len; } if (beacon->probe_resp_len) { new_beacon->probe_resp_len = beacon->probe_resp_len; new_beacon->probe_resp = pos; memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); pos += beacon->probe_resp_len; } if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) { pos += ieee80211_copy_mbssid_beacon(pos, new_beacon->mbssid_ies, beacon->mbssid_ies); if (beacon->rnr_ies && beacon->rnr_ies->cnt) pos += ieee80211_copy_rnr_beacon(pos, new_beacon->rnr_ies, beacon->rnr_ies); } /* might copy -1, meaning no changes requested */ new_beacon->ftm_responder = beacon->ftm_responder; if (beacon->lci) { new_beacon->lci_len = beacon->lci_len; new_beacon->lci = pos; memcpy(pos, beacon->lci, beacon->lci_len); pos += beacon->lci_len; } if (beacon->civicloc) { new_beacon->civicloc_len = beacon->civicloc_len; new_beacon->civicloc = pos; memcpy(pos, beacon->civicloc, beacon->civicloc_len); pos += beacon->civicloc_len; } return new_beacon; } void ieee80211_csa_finish(struct ieee80211_vif *vif, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_local *local = sdata->local; struct ieee80211_link_data *link_data; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return; rcu_read_lock(); link_data = rcu_dereference(sdata->link[link_id]); if (WARN_ON(!link_data)) { rcu_read_unlock(); return; } /* TODO: MBSSID with MLO changes */ if (vif->mbssid_tx_vif == vif) { /* Trigger ieee80211_csa_finish() on the non-transmitting * interfaces when channel switch is received on * transmitting interface */ struct ieee80211_sub_if_data *iter; list_for_each_entry_rcu(iter, &local->interfaces, list) { if (!ieee80211_sdata_running(iter)) continue; if (iter == sdata || iter->vif.mbssid_tx_vif != vif) continue; wiphy_work_queue(iter->local->hw.wiphy, &iter->deflink.csa.finalize_work); } } wiphy_work_queue(local->hw.wiphy, &link_data->csa.finalize_work); rcu_read_unlock(); } EXPORT_SYMBOL(ieee80211_csa_finish); void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; sdata_info(sdata, "channel switch failed, disconnecting\n"); wiphy_work_queue(local->hw.wiphy, &ifmgd->csa_connection_drop_work); } EXPORT_SYMBOL(ieee80211_channel_switch_disconnect); static int ieee80211_set_after_csa_beacon(struct ieee80211_link_data *link_data, u64 *changed) { struct ieee80211_sub_if_data *sdata = link_data->sdata; int err; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: if (!link_data->u.ap.next_beacon) return -EINVAL; err = ieee80211_assign_beacon(sdata, link_data, link_data->u.ap.next_beacon, NULL, NULL, changed); ieee80211_free_next_beacon(link_data); if (err < 0) return err; break; case NL80211_IFTYPE_ADHOC: err = ieee80211_ibss_finish_csa(sdata, changed); if (err < 0) return err; break; #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: err = ieee80211_mesh_finish_csa(sdata, changed); if (err < 0) return err; break; #endif default: WARN_ON(1); return -EINVAL; } return 0; } static int __ieee80211_csa_finalize(struct ieee80211_link_data *link_data) { struct ieee80211_sub_if_data *sdata = link_data->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_bss_conf *link_conf = link_data->conf; u64 changed = 0; int err; lockdep_assert_wiphy(local->hw.wiphy); /* * using reservation isn't immediate as it may be deferred until later * with multi-vif. once reservation is complete it will re-schedule the * work with no reserved_chanctx so verify chandef to check if it * completed successfully */ if (link_data->reserved_chanctx) { /* * with multi-vif csa driver may call ieee80211_csa_finish() * many times while waiting for other interfaces to use their * reservations */ if (link_data->reserved_ready) return 0; return ieee80211_link_use_reserved_context(link_data); } if (!cfg80211_chandef_identical(&link_conf->chanreq.oper, &link_data->csa.chanreq.oper)) return -EINVAL; link_conf->csa_active = false; err = ieee80211_set_after_csa_beacon(link_data, &changed); if (err) return err; ieee80211_link_info_change_notify(sdata, link_data, changed); ieee80211_vif_unblock_queues_csa(sdata); err = drv_post_channel_switch(link_data); if (err) return err; cfg80211_ch_switch_notify(sdata->dev, &link_data->csa.chanreq.oper, link_data->link_id); return 0; } static void ieee80211_csa_finalize(struct ieee80211_link_data *link_data) { struct ieee80211_sub_if_data *sdata = link_data->sdata; if (__ieee80211_csa_finalize(link_data)) { sdata_info(sdata, "failed to finalize CSA on link %d, disconnecting\n", link_data->link_id); cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, GFP_KERNEL); } } void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work) { struct ieee80211_link_data *link = container_of(work, struct ieee80211_link_data, csa.finalize_work); struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; lockdep_assert_wiphy(local->hw.wiphy); /* AP might have been stopped while waiting for the lock. */ if (!link->conf->csa_active) return; if (!ieee80211_sdata_running(sdata)) return; ieee80211_csa_finalize(link); } static int ieee80211_set_csa_beacon(struct ieee80211_link_data *link_data, struct cfg80211_csa_settings *params, u64 *changed) { struct ieee80211_sub_if_data *sdata = link_data->sdata; struct ieee80211_csa_settings csa = {}; int err; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: link_data->u.ap.next_beacon = cfg80211_beacon_dup(¶ms->beacon_after); if (!link_data->u.ap.next_beacon) return -ENOMEM; /* * With a count of 0, we don't have to wait for any * TBTT before switching, so complete the CSA * immediately. In theory, with a count == 1 we * should delay the switch until just before the next * TBTT, but that would complicate things so we switch * immediately too. If we would delay the switch * until the next TBTT, we would have to set the probe * response here. * * TODO: A channel switch with count <= 1 without * sending a CSA action frame is kind of useless, * because the clients won't know we're changing * channels. The action frame must be implemented * either here or in the userspace. */ if (params->count <= 1) break; if ((params->n_counter_offsets_beacon > IEEE80211_MAX_CNTDWN_COUNTERS_NUM) || (params->n_counter_offsets_presp > IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) { ieee80211_free_next_beacon(link_data); return -EINVAL; } csa.counter_offsets_beacon = params->counter_offsets_beacon; csa.counter_offsets_presp = params->counter_offsets_presp; csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; csa.n_counter_offsets_presp = params->n_counter_offsets_presp; csa.count = params->count; err = ieee80211_assign_beacon(sdata, link_data, ¶ms->beacon_csa, &csa, NULL, changed); if (err < 0) { ieee80211_free_next_beacon(link_data); return err; } break; case NL80211_IFTYPE_ADHOC: if (!sdata->vif.cfg.ibss_joined) return -EINVAL; if (params->chandef.width != sdata->u.ibss.chandef.width) return -EINVAL; switch (params->chandef.width) { case NL80211_CHAN_WIDTH_40: if (cfg80211_get_chandef_type(¶ms->chandef) != cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) return -EINVAL; break; case NL80211_CHAN_WIDTH_5: case NL80211_CHAN_WIDTH_10: case NL80211_CHAN_WIDTH_20_NOHT: case NL80211_CHAN_WIDTH_20: break; default: return -EINVAL; } /* changes into another band are not supported */ if (sdata->u.ibss.chandef.chan->band != params->chandef.chan->band) return -EINVAL; /* see comments in the NL80211_IFTYPE_AP block */ if (params->count > 1) { err = ieee80211_ibss_csa_beacon(sdata, params, changed); if (err < 0) return err; } ieee80211_send_action_csa(sdata, params); break; #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: { struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; /* changes into another band are not supported */ if (sdata->vif.bss_conf.chanreq.oper.chan->band != params->chandef.chan->band) return -EINVAL; if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; if (!ifmsh->pre_value) ifmsh->pre_value = 1; else ifmsh->pre_value++; } /* see comments in the NL80211_IFTYPE_AP block */ if (params->count > 1) { err = ieee80211_mesh_csa_beacon(sdata, params, changed); if (err < 0) { ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; return err; } } if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) ieee80211_send_action_csa(sdata, params); break; } #endif default: return -EOPNOTSUPP; } return 0; } static void ieee80211_color_change_abort(struct ieee80211_link_data *link) { link->conf->color_change_active = false; ieee80211_free_next_beacon(link); cfg80211_color_change_aborted_notify(link->sdata->dev, link->link_id); } static int __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_csa_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_chan_req chanreq = { .oper = params->chandef }; struct ieee80211_local *local = sdata->local; struct ieee80211_channel_switch ch_switch = { .link_id = params->link_id, }; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *chanctx; struct ieee80211_bss_conf *link_conf; struct ieee80211_link_data *link_data; u64 changed = 0; u8 link_id = params->link_id; int err; lockdep_assert_wiphy(local->hw.wiphy); if (!list_empty(&local->roc_list) || local->scanning) return -EBUSY; if (sdata->wdev.links[link_id].cac_started) return -EBUSY; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return -EINVAL; link_data = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link_data) return -ENOLINK; link_conf = link_data->conf; if (chanreq.oper.punctured && !link_conf->eht_support) return -EINVAL; /* don't allow another channel switch if one is already active. */ if (link_conf->csa_active) return -EBUSY; conf = wiphy_dereference(wiphy, link_conf->chanctx_conf); if (!conf) { err = -EBUSY; goto out; } if (params->chandef.chan->freq_offset) { /* this may work, but is untested */ err = -EOPNOTSUPP; goto out; } chanctx = container_of(conf, struct ieee80211_chanctx, conf); ch_switch.timestamp = 0; ch_switch.device_timestamp = 0; ch_switch.block_tx = params->block_tx; ch_switch.chandef = chanreq.oper; ch_switch.count = params->count; err = drv_pre_channel_switch(sdata, &ch_switch); if (err) goto out; err = ieee80211_link_reserve_chanctx(link_data, &chanreq, chanctx->mode, params->radar_required); if (err) goto out; /* if reservation is invalid then this will fail */ err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0, -1); if (err) { ieee80211_link_unreserve_chanctx(link_data); goto out; } /* if there is a color change in progress, abort it */ if (link_conf->color_change_active) ieee80211_color_change_abort(link_data); err = ieee80211_set_csa_beacon(link_data, params, &changed); if (err) { ieee80211_link_unreserve_chanctx(link_data); goto out; } link_data->csa.chanreq = chanreq; link_conf->csa_active = true; if (params->block_tx) ieee80211_vif_block_queues_csa(sdata); cfg80211_ch_switch_started_notify(sdata->dev, &link_data->csa.chanreq.oper, link_id, params->count, params->block_tx); if (changed) { ieee80211_link_info_change_notify(sdata, link_data, changed); drv_channel_switch_beacon(sdata, &link_data->csa.chanreq.oper); } else { /* if the beacon didn't change, we can finalize immediately */ ieee80211_csa_finalize(link_data); } out: return err; } int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_csa_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; lockdep_assert_wiphy(local->hw.wiphy); return __ieee80211_channel_switch(wiphy, dev, params); } u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) { lockdep_assert_wiphy(local->hw.wiphy); local->roc_cookie_counter++; /* wow, you wrapped 64 bits ... more likely a bug */ if (WARN_ON(local->roc_cookie_counter == 0)) local->roc_cookie_counter++; return local->roc_cookie_counter; } int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, u64 *cookie, gfp_t gfp) { unsigned long spin_flags; struct sk_buff *ack_skb; int id; ack_skb = skb_copy(skb, gfp); if (!ack_skb) return -ENOMEM; spin_lock_irqsave(&local->ack_status_lock, spin_flags); id = idr_alloc(&local->ack_status_frames, ack_skb, 1, 0x2000, GFP_ATOMIC); spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); if (id < 0) { kfree_skb(ack_skb); return -ENOMEM; } IEEE80211_SKB_CB(skb)->status_data_idr = 1; IEEE80211_SKB_CB(skb)->status_data = id; *cookie = ieee80211_mgmt_tx_cookie(local); IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; return 0; } static void ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy, struct wireless_dev *wdev, struct mgmt_frame_regs *upd) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4); u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4); bool global_change, intf_change; global_change = (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) || (local->rx_mcast_action_reg != !!(upd->global_mcast_stypes & action_mask)); local->probe_req_reg = upd->global_stypes & preq_mask; local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask; intf_change = (sdata->vif.probe_req_reg != !!(upd->interface_stypes & preq_mask)) || (sdata->vif.rx_mcast_action_reg != !!(upd->interface_mcast_stypes & action_mask)); sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask; sdata->vif.rx_mcast_action_reg = upd->interface_mcast_stypes & action_mask; if (!local->open_count) return; if (intf_change && ieee80211_sdata_running(sdata)) drv_config_iface_filter(local, sdata, sdata->vif.probe_req_reg ? FIF_PROBE_REQ : 0, FIF_PROBE_REQ); if (global_change) ieee80211_configure_filter(local); } static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); int ret; if (local->started) return -EOPNOTSUPP; ret = drv_set_antenna(local, tx_ant, rx_ant); if (ret) return ret; local->rx_chains = hweight8(rx_ant); return 0; } static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); return drv_get_antenna(local, tx_ant, rx_ant); } static int ieee80211_set_rekey_data(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_gtk_rekey_data *data) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!local->ops->set_rekey_data) return -EOPNOTSUPP; drv_set_rekey_data(local, sdata, data); return 0; } static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, const u8 *peer, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_qos_hdr *nullfunc; struct sk_buff *skb; int size = sizeof(*nullfunc); __le16 fc; bool qos; struct ieee80211_tx_info *info; struct sta_info *sta; struct ieee80211_chanctx_conf *chanctx_conf; enum nl80211_band band; int ret; /* the lock is needed to assign the cookie later */ lockdep_assert_wiphy(local->hw.wiphy); rcu_read_lock(); sta = sta_info_get_bss(sdata, peer); if (!sta) { ret = -ENOLINK; goto unlock; } qos = sta->sta.wme; chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); if (WARN_ON(!chanctx_conf)) { ret = -EINVAL; goto unlock; } band = chanctx_conf->def.chan->band; if (qos) { fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC | IEEE80211_FCTL_FROMDS); } else { size -= 2; fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_FROMDS); } skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); if (!skb) { ret = -ENOMEM; goto unlock; } skb->dev = dev; skb_reserve(skb, local->hw.extra_tx_headroom); nullfunc = skb_put(skb, size); nullfunc->frame_control = fc; nullfunc->duration_id = 0; memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); nullfunc->seq_ctrl = 0; info = IEEE80211_SKB_CB(skb); info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | IEEE80211_TX_INTFL_NL80211_FRAME_TX; info->band = band; skb_set_queue_mapping(skb, IEEE80211_AC_VO); skb->priority = 7; if (qos) nullfunc->qos_ctrl = cpu_to_le16(7); ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); if (ret) { kfree_skb(skb); goto unlock; } local_bh_disable(); ieee80211_xmit(sdata, sta, skb); local_bh_enable(); ret = 0; unlock: rcu_read_unlock(); return ret; } static int ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev, unsigned int link_id, struct cfg80211_chan_def *chandef) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_link_data *link; int ret = -ENODATA; rcu_read_lock(); link = rcu_dereference(sdata->link[link_id]); if (!link) { ret = -ENOLINK; goto out; } chanctx_conf = rcu_dereference(link->conf->chanctx_conf); if (chanctx_conf) { *chandef = link->conf->chanreq.oper; ret = 0; } else if (local->open_count > 0 && local->open_count == local->virt_monitors && sdata->vif.type == NL80211_IFTYPE_MONITOR) { *chandef = local->monitor_chanreq.oper; ret = 0; } out: rcu_read_unlock(); return ret; } #ifdef CONFIG_PM static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) { drv_set_wakeup(wiphy_priv(wiphy), enabled); } #endif static int ieee80211_set_qos_map(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_qos_map *qos_map) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct mac80211_qos_map *new_qos_map, *old_qos_map; if (qos_map) { new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); if (!new_qos_map) return -ENOMEM; memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); } else { /* A NULL qos_map was passed to disable QoS mapping */ new_qos_map = NULL; } old_qos_map = sdata_dereference(sdata->qos_map, sdata); rcu_assign_pointer(sdata->qos_map, new_qos_map); if (old_qos_map) kfree_rcu(old_qos_map, rcu_head); return 0; } static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id, struct cfg80211_chan_def *chandef) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link; struct ieee80211_chan_req chanreq = { .oper = *chandef }; int ret; u64 changed = 0; link = sdata_dereference(sdata->link[link_id], sdata); ret = ieee80211_link_change_chanreq(link, &chanreq, &changed); if (ret == 0) ieee80211_link_info_change_notify(sdata, link, changed); return ret; } static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, u8 tsid, const u8 *peer, u8 up, u16 admitted_time) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; int ac = ieee802_1d_to_ac[up]; if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; if (!(sdata->wmm_acm & BIT(up))) return -EINVAL; if (ifmgd->tx_tspec[ac].admitted_time) return -EBUSY; if (admitted_time) { ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; ifmgd->tx_tspec[ac].tsid = tsid; ifmgd->tx_tspec[ac].up = up; } return 0; } static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, u8 tsid, const u8 *peer) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = wiphy_priv(wiphy); int ac; for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; /* skip unused entries */ if (!tx_tspec->admitted_time) continue; if (tx_tspec->tsid != tsid) continue; /* due to this new packets will be reassigned to non-ACM ACs */ tx_tspec->up = -1; /* Make sure that all packets have been sent to avoid to * restore the QoS params on packets that are still on the * queues. */ synchronize_net(); ieee80211_flush_queues(local, sdata, false); /* restore the normal QoS parameters * (unconditionally to avoid races) */ tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; tx_tspec->downgraded = false; ieee80211_sta_handle_tspec_ac_params(sdata); /* finally clear all the data */ memset(tx_tspec, 0, sizeof(*tx_tspec)); return 0; } return -ENOENT; } void ieee80211_nan_func_terminated(struct ieee80211_vif *vif, u8 inst_id, enum nl80211_nan_func_term_reason reason, gfp_t gfp) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct cfg80211_nan_func *func; u64 cookie; if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) return; spin_lock_bh(&sdata->u.nan.func_lock); func = idr_find(&sdata->u.nan.function_inst_ids, inst_id); if (WARN_ON(!func)) { spin_unlock_bh(&sdata->u.nan.func_lock); return; } cookie = func->cookie; idr_remove(&sdata->u.nan.function_inst_ids, inst_id); spin_unlock_bh(&sdata->u.nan.func_lock); cfg80211_free_nan_func(func); cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id, reason, cookie, gfp); } EXPORT_SYMBOL(ieee80211_nan_func_terminated); void ieee80211_nan_func_match(struct ieee80211_vif *vif, struct cfg80211_nan_match_params *match, gfp_t gfp) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct cfg80211_nan_func *func; if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) return; spin_lock_bh(&sdata->u.nan.func_lock); func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id); if (WARN_ON(!func)) { spin_unlock_bh(&sdata->u.nan.func_lock); return; } match->cookie = func->cookie; spin_unlock_bh(&sdata->u.nan.func_lock); cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp); } EXPORT_SYMBOL(ieee80211_nan_func_match); static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy, struct net_device *dev, const bool enabled) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); sdata->u.ap.multicast_to_unicast = enabled; return 0; } void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, struct txq_info *txqi) { if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES); txqstats->backlog_bytes = txqi->tin.backlog_bytes; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS); txqstats->backlog_packets = txqi->tin.backlog_packets; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS); txqstats->flows = txqi->tin.flows; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS); txqstats->drops = txqi->cstats.drop_count; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS); txqstats->ecn_marks = txqi->cstats.ecn_mark; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT); txqstats->overlimit = txqi->tin.overlimit; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS); txqstats->collisions = txqi->tin.collisions; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES); txqstats->tx_bytes = txqi->tin.tx_bytes; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS); txqstats->tx_packets = txqi->tin.tx_packets; } } static int ieee80211_get_txq_stats(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_txq_stats *txqstats) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; int ret = 0; spin_lock_bh(&local->fq.lock); rcu_read_lock(); if (wdev) { sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (!sdata->vif.txq) { ret = 1; goto out; } ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq)); } else { /* phy stats */ txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) | BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) | BIT(NL80211_TXQ_STATS_OVERLIMIT) | BIT(NL80211_TXQ_STATS_OVERMEMORY) | BIT(NL80211_TXQ_STATS_COLLISIONS) | BIT(NL80211_TXQ_STATS_MAX_FLOWS); txqstats->backlog_packets = local->fq.backlog; txqstats->backlog_bytes = local->fq.memory_usage; txqstats->overlimit = local->fq.overlimit; txqstats->overmemory = local->fq.overmemory; txqstats->collisions = local->fq.collisions; txqstats->max_flows = local->fq.flows_cnt; } out: rcu_read_unlock(); spin_unlock_bh(&local->fq.lock); return ret; } static int ieee80211_get_ftm_responder_stats(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ftm_responder_stats *ftm_stats) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); return drv_get_ftm_responder_stats(local, sdata, ftm_stats); } static int ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, struct cfg80211_pmsr_request *request) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); return drv_start_pmsr(local, sdata, request); } static void ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, struct cfg80211_pmsr_request *request) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); return drv_abort_pmsr(local, sdata, request); } static int ieee80211_set_tid_config(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_tid_config *tid_conf) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (!sdata->local->ops->set_tid_config) return -EOPNOTSUPP; if (!tid_conf->peer) return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf); sta = sta_info_get_bss(sdata, tid_conf->peer); if (!sta) return -ENOENT; return drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf); } static int ieee80211_reset_tid_config(struct wiphy *wiphy, struct net_device *dev, const u8 *peer, u8 tids) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (!sdata->local->ops->reset_tid_config) return -EOPNOTSUPP; if (!peer) return drv_reset_tid_config(sdata->local, sdata, NULL, tids); sta = sta_info_get_bss(sdata, peer); if (!sta) return -ENOENT; return drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids); } static int ieee80211_set_sar_specs(struct wiphy *wiphy, struct cfg80211_sar_specs *sar) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->set_sar_specs) return -EOPNOTSUPP; return local->ops->set_sar_specs(&local->hw, sar); } static int ieee80211_set_after_color_change_beacon(struct ieee80211_link_data *link, u64 *changed) { struct ieee80211_sub_if_data *sdata = link->sdata; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: { int ret; if (!link->u.ap.next_beacon) return -EINVAL; ret = ieee80211_assign_beacon(sdata, link, link->u.ap.next_beacon, NULL, NULL, changed); ieee80211_free_next_beacon(link); if (ret < 0) return ret; break; } default: WARN_ON_ONCE(1); return -EINVAL; } return 0; } static int ieee80211_set_color_change_beacon(struct ieee80211_link_data *link, struct cfg80211_color_change_settings *params, u64 *changed) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_color_change_settings color_change = {}; int err; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: link->u.ap.next_beacon = cfg80211_beacon_dup(¶ms->beacon_next); if (!link->u.ap.next_beacon) return -ENOMEM; if (params->count <= 1) break; color_change.counter_offset_beacon = params->counter_offset_beacon; color_change.counter_offset_presp = params->counter_offset_presp; color_change.count = params->count; err = ieee80211_assign_beacon(sdata, link, ¶ms->beacon_color_change, NULL, &color_change, changed); if (err < 0) { ieee80211_free_next_beacon(link); return err; } break; default: return -EOPNOTSUPP; } return 0; } static void ieee80211_color_change_bss_config_notify(struct ieee80211_link_data *link, u8 color, int enable, u64 changed) { struct ieee80211_sub_if_data *sdata = link->sdata; lockdep_assert_wiphy(sdata->local->hw.wiphy); link->conf->he_bss_color.color = color; link->conf->he_bss_color.enabled = enable; changed |= BSS_CHANGED_HE_BSS_COLOR; ieee80211_link_info_change_notify(sdata, link, changed); if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) { struct ieee80211_sub_if_data *child; list_for_each_entry(child, &sdata->local->interfaces, list) { if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) { child->vif.bss_conf.he_bss_color.color = color; child->vif.bss_conf.he_bss_color.enabled = enable; ieee80211_link_info_change_notify(child, &child->deflink, BSS_CHANGED_HE_BSS_COLOR); } } } } static int ieee80211_color_change_finalize(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; u64 changed = 0; int err; lockdep_assert_wiphy(local->hw.wiphy); link->conf->color_change_active = false; err = ieee80211_set_after_color_change_beacon(link, &changed); if (err) { cfg80211_color_change_aborted_notify(sdata->dev, link->link_id); return err; } ieee80211_color_change_bss_config_notify(link, link->conf->color_change_color, 1, changed); cfg80211_color_change_notify(sdata->dev, link->link_id); return 0; } void ieee80211_color_change_finalize_work(struct wiphy *wiphy, struct wiphy_work *work) { struct ieee80211_link_data *link = container_of(work, struct ieee80211_link_data, color_change_finalize_work); struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_local *local = sdata->local; lockdep_assert_wiphy(local->hw.wiphy); /* AP might have been stopped while waiting for the lock. */ if (!link_conf->color_change_active) return; if (!ieee80211_sdata_running(sdata)) return; ieee80211_color_change_finalize(link); } void ieee80211_color_collision_detection_work(struct wiphy *wiphy, struct wiphy_work *work) { struct ieee80211_link_data *link = container_of(work, struct ieee80211_link_data, color_collision_detect_work.work); struct ieee80211_sub_if_data *sdata = link->sdata; cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap, link->link_id); } void ieee80211_color_change_finish(struct ieee80211_vif *vif, u8 link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_link_data *link; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return; rcu_read_lock(); link = rcu_dereference(sdata->link[link_id]); if (WARN_ON(!link)) { rcu_read_unlock(); return; } wiphy_work_queue(sdata->local->hw.wiphy, &link->color_change_finalize_work); rcu_read_unlock(); } EXPORT_SYMBOL_GPL(ieee80211_color_change_finish); void ieee80211_obss_color_collision_notify(struct ieee80211_vif *vif, u64 color_bitmap, u8 link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_link_data *link; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return; rcu_read_lock(); link = rcu_dereference(sdata->link[link_id]); if (WARN_ON(!link)) { rcu_read_unlock(); return; } if (link->conf->color_change_active || link->conf->csa_active) { rcu_read_unlock(); return; } if (wiphy_delayed_work_pending(sdata->local->hw.wiphy, &link->color_collision_detect_work)) { rcu_read_unlock(); return; } link->color_bitmap = color_bitmap; /* queue the color collision detection event every 500 ms in order to * avoid sending too much netlink messages to userspace. */ wiphy_delayed_work_queue(sdata->local->hw.wiphy, &link->color_collision_detect_work, msecs_to_jiffies(500)); rcu_read_unlock(); } EXPORT_SYMBOL_GPL(ieee80211_obss_color_collision_notify); static int ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_color_change_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_bss_conf *link_conf; struct ieee80211_link_data *link; u8 link_id = params->link_id; u64 changed = 0; int err; lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return -EINVAL; link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) return -ENOLINK; link_conf = link->conf; if (link_conf->nontransmitted) return -EINVAL; /* don't allow another color change if one is already active or if csa * is active */ if (link_conf->color_change_active || link_conf->csa_active) { err = -EBUSY; goto out; } err = ieee80211_set_color_change_beacon(link, params, &changed); if (err) goto out; link_conf->color_change_active = true; link_conf->color_change_color = params->color; cfg80211_color_change_started_notify(sdata->dev, params->count, link_id); if (changed) ieee80211_color_change_bss_config_notify(link, 0, 0, changed); else /* if the beacon didn't change, we can finalize immediately */ ieee80211_color_change_finalize(link); out: return err; } static int ieee80211_set_radar_background(struct wiphy *wiphy, struct cfg80211_chan_def *chandef) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->set_radar_background) return -EOPNOTSUPP; return local->ops->set_radar_background(&local->hw, chandef); } static int ieee80211_add_intf_link(struct wiphy *wiphy, struct wireless_dev *wdev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); lockdep_assert_wiphy(sdata->local->hw.wiphy); if (wdev->use_4addr) return -EOPNOTSUPP; return ieee80211_vif_set_links(sdata, wdev->valid_links, 0); } static void ieee80211_del_intf_link(struct wiphy *wiphy, struct wireless_dev *wdev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); u16 new_links = wdev->valid_links & ~BIT(link_id); lockdep_assert_wiphy(sdata->local->hw.wiphy); /* During the link teardown process, certain functions require the * link_id to remain in the valid_links bitmap. Therefore, instead * of removing the link_id from the bitmap, pass a masked value to * simulate as if link_id does not exist anymore. */ ieee80211_vif_set_links(sdata, new_links, 0); } static int ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev, struct link_station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; int ret; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, params->mld_mac); if (!sta) return -ENOENT; if (!sta->sta.valid_links) return -EINVAL; if (sta->sta.valid_links & BIT(params->link_id)) return -EALREADY; ret = ieee80211_sta_allocate_link(sta, params->link_id); if (ret) return ret; ret = sta_link_apply_parameters(local, sta, STA_LINK_MODE_NEW, params); if (ret) { ieee80211_sta_free_link(sta, params->link_id); return ret; } if (test_sta_flag(sta, WLAN_STA_ASSOC)) { struct link_sta_info *link_sta; link_sta = sdata_dereference(sta->link[params->link_id], sdata); rate_control_rate_init(link_sta); } /* ieee80211_sta_activate_link frees the link upon failure */ return ieee80211_sta_activate_link(sta, params->link_id); } static int ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev, struct link_station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, params->mld_mac); if (!sta) return -ENOENT; if (!(sta->sta.valid_links & BIT(params->link_id))) return -EINVAL; return sta_link_apply_parameters(local, sta, STA_LINK_MODE_LINK_MODIFY, params); } static int ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev, struct link_station_del_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; lockdep_assert_wiphy(sdata->local->hw.wiphy); sta = sta_info_get_bss(sdata, params->mld_mac); if (!sta) return -ENOENT; if (!(sta->sta.valid_links & BIT(params->link_id))) return -EINVAL; /* must not create a STA without links */ if (sta->sta.valid_links == BIT(params->link_id)) return -EINVAL; ieee80211_sta_remove_link(sta, params->link_id); return 0; } static int ieee80211_set_hw_timestamp(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_set_hw_timestamp *hwts) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; if (!local->ops->set_hw_timestamp) return -EOPNOTSUPP; if (!check_sdata_in_driver(sdata)) return -EIO; return local->ops->set_hw_timestamp(&local->hw, &sdata->vif, hwts); } static int ieee80211_set_ttlm(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ttlm_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); lockdep_assert_wiphy(sdata->local->hw.wiphy); return ieee80211_req_neg_ttlm(sdata, params); } static int ieee80211_assoc_ml_reconf(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ml_reconf_req *req) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); lockdep_assert_wiphy(sdata->local->hw.wiphy); return ieee80211_mgd_assoc_ml_reconf(sdata, req); } static int ieee80211_set_epcs(struct wiphy *wiphy, struct net_device *dev, bool enable) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); return ieee80211_mgd_set_epcs(sdata, enable); } const struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, .change_virtual_intf = ieee80211_change_iface, .start_p2p_device = ieee80211_start_p2p_device, .stop_p2p_device = ieee80211_stop_p2p_device, .add_key = ieee80211_add_key, .del_key = ieee80211_del_key, .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, .set_default_mgmt_key = ieee80211_config_default_mgmt_key, .set_default_beacon_key = ieee80211_config_default_beacon_key, .start_ap = ieee80211_start_ap, .change_beacon = ieee80211_change_beacon, .stop_ap = ieee80211_stop_ap, .add_station = ieee80211_add_station, .del_station = ieee80211_del_station, .change_station = ieee80211_change_station, .get_station = ieee80211_get_station, .dump_station = ieee80211_dump_station, .dump_survey = ieee80211_dump_survey, #ifdef CONFIG_MAC80211_MESH .add_mpath = ieee80211_add_mpath, .del_mpath = ieee80211_del_mpath, .change_mpath = ieee80211_change_mpath, .get_mpath = ieee80211_get_mpath, .dump_mpath = ieee80211_dump_mpath, .get_mpp = ieee80211_get_mpp, .dump_mpp = ieee80211_dump_mpp, .update_mesh_config = ieee80211_update_mesh_config, .get_mesh_config = ieee80211_get_mesh_config, .join_mesh = ieee80211_join_mesh, .leave_mesh = ieee80211_leave_mesh, #endif .join_ocb = ieee80211_join_ocb, .leave_ocb = ieee80211_leave_ocb, .change_bss = ieee80211_change_bss, .inform_bss = ieee80211_inform_bss, .set_txq_params = ieee80211_set_txq_params, .set_monitor_channel = ieee80211_set_monitor_channel, .suspend = ieee80211_suspend, .resume = ieee80211_resume, .scan = ieee80211_scan, .abort_scan = ieee80211_abort_scan, .sched_scan_start = ieee80211_sched_scan_start, .sched_scan_stop = ieee80211_sched_scan_stop, .auth = ieee80211_auth, .assoc = ieee80211_assoc, .deauth = ieee80211_deauth, .disassoc = ieee80211_disassoc, .join_ibss = ieee80211_join_ibss, .leave_ibss = ieee80211_leave_ibss, .set_mcast_rate = ieee80211_set_mcast_rate, .set_wiphy_params = ieee80211_set_wiphy_params, .set_tx_power = ieee80211_set_tx_power, .get_tx_power = ieee80211_get_tx_power, .rfkill_poll = ieee80211_rfkill_poll, CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) .set_power_mgmt = ieee80211_set_power_mgmt, .set_bitrate_mask = ieee80211_set_bitrate_mask, .remain_on_channel = ieee80211_remain_on_channel, .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, .mgmt_tx = ieee80211_mgmt_tx, .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config, .update_mgmt_frame_registrations = ieee80211_update_mgmt_frame_registrations, .set_antenna = ieee80211_set_antenna, .get_antenna = ieee80211_get_antenna, .set_rekey_data = ieee80211_set_rekey_data, .tdls_oper = ieee80211_tdls_oper, .tdls_mgmt = ieee80211_tdls_mgmt, .tdls_channel_switch = ieee80211_tdls_channel_switch, .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, .probe_client = ieee80211_probe_client, .set_noack_map = ieee80211_set_noack_map, #ifdef CONFIG_PM .set_wakeup = ieee80211_set_wakeup, #endif .get_channel = ieee80211_cfg_get_channel, .start_radar_detection = ieee80211_start_radar_detection, .end_cac = ieee80211_end_cac, .channel_switch = ieee80211_channel_switch, .set_qos_map = ieee80211_set_qos_map, .set_ap_chanwidth = ieee80211_set_ap_chanwidth, .add_tx_ts = ieee80211_add_tx_ts, .del_tx_ts = ieee80211_del_tx_ts, .start_nan = ieee80211_start_nan, .stop_nan = ieee80211_stop_nan, .nan_change_conf = ieee80211_nan_change_conf, .add_nan_func = ieee80211_add_nan_func, .del_nan_func = ieee80211_del_nan_func, .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast, .tx_control_port = ieee80211_tx_control_port, .get_txq_stats = ieee80211_get_txq_stats, .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats, .start_pmsr = ieee80211_start_pmsr, .abort_pmsr = ieee80211_abort_pmsr, .probe_mesh_link = ieee80211_probe_mesh_link, .set_tid_config = ieee80211_set_tid_config, .reset_tid_config = ieee80211_reset_tid_config, .set_sar_specs = ieee80211_set_sar_specs, .color_change = ieee80211_color_change, .set_radar_background = ieee80211_set_radar_background, .add_intf_link = ieee80211_add_intf_link, .del_intf_link = ieee80211_del_intf_link, .add_link_station = ieee80211_add_link_station, .mod_link_station = ieee80211_mod_link_station, .del_link_station = ieee80211_del_link_station, .set_hw_timestamp = ieee80211_set_hw_timestamp, .set_ttlm = ieee80211_set_ttlm, .get_radio_mask = ieee80211_get_radio_mask, .assoc_ml_reconf = ieee80211_assoc_ml_reconf, .set_epcs = ieee80211_set_epcs, }; |
| 149 148 149 149 149 151 13 13 13 13 13 13 13 13 13 3 17 17 17 17 17 17 16 17 17 5 3 3 3 3 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 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 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2006, Johannes Berg <johannes@sipsolutions.net> */ /* just for IFNAMSIZ */ #include <linux/if.h> #include <linux/slab.h> #include <linux/export.h> #include "led.h" void ieee80211_led_assoc(struct ieee80211_local *local, bool associated) { if (!atomic_read(&local->assoc_led_active)) return; if (associated) led_trigger_event(&local->assoc_led, LED_FULL); else led_trigger_event(&local->assoc_led, LED_OFF); } void ieee80211_led_radio(struct ieee80211_local *local, bool enabled) { if (!atomic_read(&local->radio_led_active)) return; if (enabled) led_trigger_event(&local->radio_led, LED_FULL); else led_trigger_event(&local->radio_led, LED_OFF); } void ieee80211_alloc_led_names(struct ieee80211_local *local) { local->rx_led.name = kasprintf(GFP_KERNEL, "%srx", wiphy_name(local->hw.wiphy)); local->tx_led.name = kasprintf(GFP_KERNEL, "%stx", wiphy_name(local->hw.wiphy)); local->assoc_led.name = kasprintf(GFP_KERNEL, "%sassoc", wiphy_name(local->hw.wiphy)); local->radio_led.name = kasprintf(GFP_KERNEL, "%sradio", wiphy_name(local->hw.wiphy)); } void ieee80211_free_led_names(struct ieee80211_local *local) { kfree(local->rx_led.name); kfree(local->tx_led.name); kfree(local->assoc_led.name); kfree(local->radio_led.name); } static int ieee80211_tx_led_activate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, tx_led); atomic_inc(&local->tx_led_active); return 0; } static void ieee80211_tx_led_deactivate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, tx_led); atomic_dec(&local->tx_led_active); } static int ieee80211_rx_led_activate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, rx_led); atomic_inc(&local->rx_led_active); return 0; } static void ieee80211_rx_led_deactivate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, rx_led); atomic_dec(&local->rx_led_active); } static int ieee80211_assoc_led_activate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, assoc_led); atomic_inc(&local->assoc_led_active); return 0; } static void ieee80211_assoc_led_deactivate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, assoc_led); atomic_dec(&local->assoc_led_active); } static int ieee80211_radio_led_activate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, radio_led); atomic_inc(&local->radio_led_active); return 0; } static void ieee80211_radio_led_deactivate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, radio_led); atomic_dec(&local->radio_led_active); } static int ieee80211_tpt_led_activate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, tpt_led); atomic_inc(&local->tpt_led_active); return 0; } static void ieee80211_tpt_led_deactivate(struct led_classdev *led_cdev) { struct ieee80211_local *local = container_of(led_cdev->trigger, struct ieee80211_local, tpt_led); atomic_dec(&local->tpt_led_active); } void ieee80211_led_init(struct ieee80211_local *local) { atomic_set(&local->rx_led_active, 0); local->rx_led.activate = ieee80211_rx_led_activate; local->rx_led.deactivate = ieee80211_rx_led_deactivate; if (local->rx_led.name && led_trigger_register(&local->rx_led)) { kfree(local->rx_led.name); local->rx_led.name = NULL; } atomic_set(&local->tx_led_active, 0); local->tx_led.activate = ieee80211_tx_led_activate; local->tx_led.deactivate = ieee80211_tx_led_deactivate; if (local->tx_led.name && led_trigger_register(&local->tx_led)) { kfree( |