diff options
Diffstat (limited to 'include/asm-x86/fixmap.h')
-rw-r--r-- | include/asm-x86/fixmap.h | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/include/asm-x86/fixmap.h b/include/asm-x86/fixmap.h deleted file mode 100644 index 78e33a1bc591..000000000000 --- a/include/asm-x86/fixmap.h +++ /dev/null | |||
@@ -1,68 +0,0 @@ | |||
1 | #ifndef ASM_X86__FIXMAP_H | ||
2 | #define ASM_X86__FIXMAP_H | ||
3 | |||
4 | #ifdef CONFIG_X86_32 | ||
5 | # include "fixmap_32.h" | ||
6 | #else | ||
7 | # include "fixmap_64.h" | ||
8 | #endif | ||
9 | |||
10 | extern int fixmaps_set; | ||
11 | |||
12 | void __native_set_fixmap(enum fixed_addresses idx, pte_t pte); | ||
13 | void native_set_fixmap(enum fixed_addresses idx, | ||
14 | unsigned long phys, pgprot_t flags); | ||
15 | |||
16 | #ifndef CONFIG_PARAVIRT | ||
17 | static inline void __set_fixmap(enum fixed_addresses idx, | ||
18 | unsigned long phys, pgprot_t flags) | ||
19 | { | ||
20 | native_set_fixmap(idx, phys, flags); | ||
21 | } | ||
22 | #endif | ||
23 | |||
24 | #define set_fixmap(idx, phys) \ | ||
25 | __set_fixmap(idx, phys, PAGE_KERNEL) | ||
26 | |||
27 | /* | ||
28 | * Some hardware wants to get fixmapped without caching. | ||
29 | */ | ||
30 | #define set_fixmap_nocache(idx, phys) \ | ||
31 | __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE) | ||
32 | |||
33 | #define clear_fixmap(idx) \ | ||
34 | __set_fixmap(idx, 0, __pgprot(0)) | ||
35 | |||
36 | #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) | ||
37 | #define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) | ||
38 | |||
39 | extern void __this_fixmap_does_not_exist(void); | ||
40 | |||
41 | /* | ||
42 | * 'index to address' translation. If anyone tries to use the idx | ||
43 | * directly without translation, we catch the bug with a NULL-deference | ||
44 | * kernel oops. Illegal ranges of incoming indices are caught too. | ||
45 | */ | ||
46 | static __always_inline unsigned long fix_to_virt(const unsigned int idx) | ||
47 | { | ||
48 | /* | ||
49 | * this branch gets completely eliminated after inlining, | ||
50 | * except when someone tries to use fixaddr indices in an | ||
51 | * illegal way. (such as mixing up address types or using | ||
52 | * out-of-range indices). | ||
53 | * | ||
54 | * If it doesn't get removed, the linker will complain | ||
55 | * loudly with a reasonably clear error message.. | ||
56 | */ | ||
57 | if (idx >= __end_of_fixed_addresses) | ||
58 | __this_fixmap_does_not_exist(); | ||
59 | |||
60 | return __fix_to_virt(idx); | ||
61 | } | ||
62 | |||
63 | static inline unsigned long virt_to_fix(const unsigned long vaddr) | ||
64 | { | ||
65 | BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); | ||
66 | return __virt_to_fix(vaddr); | ||
67 | } | ||
68 | #endif /* ASM_X86__FIXMAP_H */ | ||