/src/barebox/include/mmu.h

Source
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __MMU_H
#define __MMU_H

#include <linux/types.h>
#include <errno.h>

#define MAP_UNCACHED    0
#define MAP_CACHED    1
#define MAP_FAULT   2
#define MAP_CODE    3
#define MAP_CACHED_RO   4
#define MAP_CACHED_RWX    6

#ifdef CONFIG_ARCH_HAS_DMA_WRITE_COMBINE
#define MAP_WRITECOMBINE  5
#else
#define MAP_WRITECOMBINE  MAP_UNCACHED
#endif

#define MAP_TYPE_MASK 0xFFFF
#define MAP_ARCH(x) ((u16)~(x))

/*
 * Depending on the architecture the default mapping can be
 * cached or uncached. Without ARCH_HAS_REMAP being set this
 * is mapping type is the only one supported.
 */
#define MAP_DEFAULT MAP_ARCH_DEFAULT

#include <asm/mmu.h>
#include <asm/io.h>

static inline bool maptype_is_compatible(maptype_t active, maptype_t check)
{
  active &= MAP_TYPE_MASK;
  check &= MAP_TYPE_MASK;

  if (active == check)
    return true;
  if (active == MAP_CODE && check == MAP_CACHED)
    return true;

  return false;
}

#ifndef ARCH_HAS_REMAP
static inline int arch_remap_range(void *virt_addr, phys_addr_t phys_addr,
           size_t size, maptype_t map_type)
{
  if (maptype_is_compatible(map_type, MAP_ARCH_DEFAULT) &&
      phys_addr == virt_to_phys(virt_addr))
    return 0;

  return -EINVAL;
}

static inline bool arch_can_remap(void)
{
  return false;
}
#else
static inline bool arch_can_remap(void)
{
  return true;
}
#endif

static inline int remap_range(void *start, size_t size, maptype_t map_type)
{
  return arch_remap_range(start, virt_to_phys(start), size, map_type);
}

#ifdef CONFIG_MMUINFO
int mmuinfo(void *addr);
#else
static inline int mmuinfo(void *addr)
{
  return -ENOSYS;
}
#endif

#endif

Line	Count	Source
1		/* SPDX-License-Identifier: GPL-2.0-only */
2		#ifndef __MMU_H
3		#define __MMU_H
4
5		#include <linux/types.h>
6		#include <errno.h>
7
8	0	#define MAP_UNCACHED 0
9	0	#define MAP_CACHED 1
10		#define MAP_FAULT 2
11	0	#define MAP_CODE 3
12		#define MAP_CACHED_RO 4
13		#define MAP_CACHED_RWX 6
14
15		#ifdef CONFIG_ARCH_HAS_DMA_WRITE_COMBINE
16		#define MAP_WRITECOMBINE 5
17		#else
18		#define MAP_WRITECOMBINE MAP_UNCACHED
19		#endif
20
21	0	#define MAP_TYPE_MASK 0xFFFF
22		#define MAP_ARCH(x) ((u16)~(x))
23
24		/*
25		* Depending on the architecture the default mapping can be
26		* cached or uncached. Without ARCH_HAS_REMAP being set this
27		* is mapping type is the only one supported.
28		*/
29	0	#define MAP_DEFAULT MAP_ARCH_DEFAULT
30
31		#include <asm/mmu.h>
32		#include <asm/io.h>
33
34		static inline bool maptype_is_compatible(maptype_t active, maptype_t check)
35	0	{
36	0	active &= MAP_TYPE_MASK;
37	0	check &= MAP_TYPE_MASK;
38
39	0	if (active == check)
40	0	return true;
41	0	if (active == MAP_CODE && check == MAP_CACHED)
42	0	return true;
43
44	0	return false;
45	0	} Unexecuted instantiation: memory.c:maptype_is_compatible Unexecuted instantiation: memtest.c:maptype_is_compatible Unexecuted instantiation: spi.c:maptype_is_compatible Unexecuted instantiation: at24.c:maptype_is_compatible Unexecuted instantiation: core.c:maptype_is_compatible Unexecuted instantiation: regmap.c:maptype_is_compatible Unexecuted instantiation: partition.c:maptype_is_compatible Unexecuted instantiation: layouts.c:maptype_is_compatible Unexecuted instantiation: rmem.c:maptype_is_compatible Unexecuted instantiation: platform.c:maptype_is_compatible Unexecuted instantiation: rtc-lib.c:maptype_is_compatible Unexecuted instantiation: class.c:maptype_is_compatible Unexecuted instantiation: nvmem.c:maptype_is_compatible Unexecuted instantiation: rtc-ds1307.c:maptype_is_compatible Unexecuted instantiation: bfetch.c:maptype_is_compatible Unexecuted instantiation: hwclock.c:maptype_is_compatible
46
47		#ifndef ARCH_HAS_REMAP
48		static inline int arch_remap_range(void *virt_addr, phys_addr_t phys_addr,
49		size_t size, maptype_t map_type)
50	0	{
51	0	if (maptype_is_compatible(map_type, MAP_ARCH_DEFAULT) &&
52	0	phys_addr == virt_to_phys(virt_addr))
53	0	return 0;
54
55	0	return -EINVAL;
56	0	} Unexecuted instantiation: memory.c:arch_remap_range Unexecuted instantiation: memtest.c:arch_remap_range Unexecuted instantiation: spi.c:arch_remap_range Unexecuted instantiation: at24.c:arch_remap_range Unexecuted instantiation: core.c:arch_remap_range Unexecuted instantiation: regmap.c:arch_remap_range Unexecuted instantiation: partition.c:arch_remap_range Unexecuted instantiation: layouts.c:arch_remap_range Unexecuted instantiation: rmem.c:arch_remap_range Unexecuted instantiation: platform.c:arch_remap_range Unexecuted instantiation: rtc-lib.c:arch_remap_range Unexecuted instantiation: class.c:arch_remap_range Unexecuted instantiation: nvmem.c:arch_remap_range Unexecuted instantiation: rtc-ds1307.c:arch_remap_range Unexecuted instantiation: bfetch.c:arch_remap_range Unexecuted instantiation: hwclock.c:arch_remap_range
57
58		static inline bool arch_can_remap(void)
59	0	{
60	0	return false;
61	0	} Unexecuted instantiation: memory.c:arch_can_remap Unexecuted instantiation: memtest.c:arch_can_remap Unexecuted instantiation: spi.c:arch_can_remap Unexecuted instantiation: at24.c:arch_can_remap Unexecuted instantiation: core.c:arch_can_remap Unexecuted instantiation: regmap.c:arch_can_remap Unexecuted instantiation: partition.c:arch_can_remap Unexecuted instantiation: layouts.c:arch_can_remap Unexecuted instantiation: rmem.c:arch_can_remap Unexecuted instantiation: platform.c:arch_can_remap Unexecuted instantiation: rtc-lib.c:arch_can_remap Unexecuted instantiation: class.c:arch_can_remap Unexecuted instantiation: nvmem.c:arch_can_remap Unexecuted instantiation: rtc-ds1307.c:arch_can_remap Unexecuted instantiation: bfetch.c:arch_can_remap Unexecuted instantiation: hwclock.c:arch_can_remap
62		#else
63		static inline bool arch_can_remap(void)
64		{
65		return true;
66		}
67		#endif
68
69		static inline int remap_range(void *start, size_t size, maptype_t map_type)
70	0	{
71	0	return arch_remap_range(start, virt_to_phys(start), size, map_type);
72	0	} Unexecuted instantiation: memory.c:remap_range Unexecuted instantiation: memtest.c:remap_range Unexecuted instantiation: spi.c:remap_range Unexecuted instantiation: at24.c:remap_range Unexecuted instantiation: core.c:remap_range Unexecuted instantiation: regmap.c:remap_range Unexecuted instantiation: partition.c:remap_range Unexecuted instantiation: layouts.c:remap_range Unexecuted instantiation: rmem.c:remap_range Unexecuted instantiation: platform.c:remap_range Unexecuted instantiation: rtc-lib.c:remap_range Unexecuted instantiation: class.c:remap_range Unexecuted instantiation: nvmem.c:remap_range Unexecuted instantiation: rtc-ds1307.c:remap_range Unexecuted instantiation: bfetch.c:remap_range Unexecuted instantiation: hwclock.c:remap_range
73
74		#ifdef CONFIG_MMUINFO
75		int mmuinfo(void *addr);
76		#else
77		static inline int mmuinfo(void *addr)
78	0	{
79	0	return -ENOSYS;
80	0	} Unexecuted instantiation: memory.c:mmuinfo Unexecuted instantiation: memtest.c:mmuinfo Unexecuted instantiation: spi.c:mmuinfo Unexecuted instantiation: at24.c:mmuinfo Unexecuted instantiation: core.c:mmuinfo Unexecuted instantiation: regmap.c:mmuinfo Unexecuted instantiation: partition.c:mmuinfo Unexecuted instantiation: layouts.c:mmuinfo Unexecuted instantiation: rmem.c:mmuinfo Unexecuted instantiation: platform.c:mmuinfo Unexecuted instantiation: rtc-lib.c:mmuinfo Unexecuted instantiation: class.c:mmuinfo Unexecuted instantiation: nvmem.c:mmuinfo Unexecuted instantiation: rtc-ds1307.c:mmuinfo Unexecuted instantiation: bfetch.c:mmuinfo Unexecuted instantiation: hwclock.c:mmuinfo
81		#endif
82
83		#endif

Coverage Report

Created: 2026-10-17 06:38