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authorIngo Molnar <mingo@elte.hu>2008-07-08 06:24:29 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-08 06:24:29 -0400
commit6236af82d8a989e150a02800c210eb61cb1e17be (patch)
treed5e83e66b09fc405ac70925f9b83152abaf48a03 /include/asm-x86/fixmap_32.h
parente3ae0acf59244ecf5b023ec99cef4b6b29d649bc (diff)
parent8b7ef4ec5b1ac8b6feebf5ae9cda85a7514728f8 (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.h42
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
112extern void __set_fixmap(enum fixed_addresses idx,
113 unsigned long phys, pgprot_t flags);
114extern void reserve_top_address(unsigned long reserve); 112extern 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
134extern 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 */
141static __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
158static 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