diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-08 06:24:29 -0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 06:24:29 -0400 |
commit | 6236af82d8a989e150a02800c210eb61cb1e17be (patch) | |
tree | d5e83e66b09fc405ac70925f9b83152abaf48a03 /include/asm-x86/fixmap_32.h | |
parent | e3ae0acf59244ecf5b023ec99cef4b6b29d649bc (diff) | |
parent | 8b7ef4ec5b1ac8b6feebf5ae9cda85a7514728f8 (diff) |
Merge branch 'x86/fixmap' into x86/devel
Conflicts:
arch/x86/mm/init_64.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/fixmap_32.h')
-rw-r--r-- | include/asm-x86/fixmap_32.h | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/include/asm-x86/fixmap_32.h b/include/asm-x86/fixmap_32.h index f0df7ee96816..aae2f0501a40 100644 --- a/include/asm-x86/fixmap_32.h +++ b/include/asm-x86/fixmap_32.h | |||
@@ -109,17 +109,8 @@ enum fixed_addresses { | |||
109 | __end_of_fixed_addresses | 109 | __end_of_fixed_addresses |
110 | }; | 110 | }; |
111 | 111 | ||
112 | extern void __set_fixmap(enum fixed_addresses idx, | ||
113 | unsigned long phys, pgprot_t flags); | ||
114 | extern void reserve_top_address(unsigned long reserve); | 112 | extern void reserve_top_address(unsigned long reserve); |
115 | 113 | ||
116 | #define set_fixmap(idx, phys) \ | ||
117 | __set_fixmap(idx, phys, PAGE_KERNEL) | ||
118 | /* | ||
119 | * Some hardware wants to get fixmapped without caching. | ||
120 | */ | ||
121 | #define set_fixmap_nocache(idx, phys) \ | ||
122 | __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE) | ||
123 | 114 | ||
124 | #define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP) | 115 | #define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP) |
125 | 116 | ||
@@ -128,38 +119,5 @@ extern void reserve_top_address(unsigned long reserve); | |||
128 | #define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE) | 119 | #define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE) |
129 | #define FIXADDR_BOOT_START (FIXADDR_TOP - __FIXADDR_BOOT_SIZE) | 120 | #define FIXADDR_BOOT_START (FIXADDR_TOP - __FIXADDR_BOOT_SIZE) |
130 | 121 | ||
131 | #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) | ||
132 | #define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) | ||
133 | |||
134 | extern void __this_fixmap_does_not_exist(void); | ||
135 | |||
136 | /* | ||
137 | * 'index to address' translation. If anyone tries to use the idx | ||
138 | * directly without tranlation, we catch the bug with a NULL-deference | ||
139 | * kernel oops. Illegal ranges of incoming indices are caught too. | ||
140 | */ | ||
141 | static __always_inline unsigned long fix_to_virt(const unsigned int idx) | ||
142 | { | ||
143 | /* | ||
144 | * this branch gets completely eliminated after inlining, | ||
145 | * except when someone tries to use fixaddr indices in an | ||
146 | * illegal way. (such as mixing up address types or using | ||
147 | * out-of-range indices). | ||
148 | * | ||
149 | * If it doesn't get removed, the linker will complain | ||
150 | * loudly with a reasonably clear error message.. | ||
151 | */ | ||
152 | if (idx >= __end_of_fixed_addresses) | ||
153 | __this_fixmap_does_not_exist(); | ||
154 | |||
155 | return __fix_to_virt(idx); | ||
156 | } | ||
157 | |||
158 | static inline unsigned long virt_to_fix(const unsigned long vaddr) | ||
159 | { | ||
160 | BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); | ||
161 | return __virt_to_fix(vaddr); | ||
162 | } | ||
163 | |||
164 | #endif /* !__ASSEMBLY__ */ | 122 | #endif /* !__ASSEMBLY__ */ |
165 | #endif | 123 | #endif |