Root/
Source at commit b2ecc5e4bbfa94685d6a74fd4e8a3fcbcc994be4 created 13 years 10 months ago. By Maarten ter Huurne, mips: Implement flush_kernel_dcache_page(). This is just a quick fix; a real fix would implement flush_kernel_vmap_range() and invalidate_kernel_vmap_range() as well, but those are only used in XFS for which we have no need on the Dingoo. | |
---|---|
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public |
3 | * License. See the file "COPYING" in the main directory of this archive |
4 | * for more details. |
5 | * |
6 | * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle |
7 | * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc. |
8 | */ |
9 | #ifndef _ASM_CACHEFLUSH_H |
10 | #define _ASM_CACHEFLUSH_H |
11 | |
12 | /* Keep includes the same across arches. */ |
13 | #include <linux/mm.h> |
14 | #include <asm/cpu-features.h> |
15 | |
16 | /* Cache flushing: |
17 | * |
18 | * - flush_cache_all() flushes entire cache |
19 | * - flush_cache_mm(mm) flushes the specified mm context's cache lines |
20 | * - flush_cache_dup mm(mm) handles cache flushing when forking |
21 | * - flush_cache_page(mm, vmaddr, pfn) flushes a single page |
22 | * - flush_cache_range(vma, start, end) flushes a range of pages |
23 | * - flush_icache_range(start, end) flush a range of instructions |
24 | * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache |
25 | * |
26 | * MIPS specific flush operations: |
27 | * |
28 | * - flush_cache_sigtramp() flush signal trampoline |
29 | * - flush_icache_all() flush the entire instruction cache |
30 | * - flush_data_cache_page() flushes a page from the data cache |
31 | */ |
32 | extern void (*flush_cache_all)(void); |
33 | extern void (*__flush_cache_all)(void); |
34 | extern void (*flush_cache_mm)(struct mm_struct *mm); |
35 | #define flush_cache_dup_mm(mm) do { (void) (mm); } while (0) |
36 | extern void (*flush_cache_range)(struct vm_area_struct *vma, |
37 | unsigned long start, unsigned long end); |
38 | extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn); |
39 | extern void __flush_dcache_page(struct page *page); |
40 | |
41 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 |
42 | static inline void flush_dcache_page(struct page *page) |
43 | { |
44 | if (cpu_has_dc_aliases || !cpu_has_ic_fills_f_dc) |
45 | __flush_dcache_page(page); |
46 | |
47 | } |
48 | |
49 | #define flush_dcache_mmap_lock(mapping) do { } while (0) |
50 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) |
51 | |
52 | #define ARCH_HAS_FLUSH_ANON_PAGE |
53 | extern void __flush_anon_page(struct page *, unsigned long); |
54 | static inline void flush_anon_page(struct vm_area_struct *vma, |
55 | struct page *page, unsigned long vmaddr) |
56 | { |
57 | if (cpu_has_dc_aliases && PageAnon(page)) |
58 | __flush_anon_page(page, vmaddr); |
59 | } |
60 | |
61 | static inline void flush_icache_page(struct vm_area_struct *vma, |
62 | struct page *page) |
63 | { |
64 | } |
65 | |
66 | extern void (*flush_icache_range)(unsigned long start, unsigned long end); |
67 | extern void (*local_flush_icache_range)(unsigned long start, unsigned long end); |
68 | |
69 | extern void (*__flush_cache_vmap)(void); |
70 | |
71 | static inline void flush_cache_vmap(unsigned long start, unsigned long end) |
72 | { |
73 | if (cpu_has_dc_aliases) |
74 | __flush_cache_vmap(); |
75 | } |
76 | |
77 | extern void (*__flush_cache_vunmap)(void); |
78 | |
79 | static inline void flush_cache_vunmap(unsigned long start, unsigned long end) |
80 | { |
81 | if (cpu_has_dc_aliases) |
82 | __flush_cache_vunmap(); |
83 | } |
84 | |
85 | extern void copy_to_user_page(struct vm_area_struct *vma, |
86 | struct page *page, unsigned long vaddr, void *dst, const void *src, |
87 | unsigned long len); |
88 | |
89 | extern void copy_from_user_page(struct vm_area_struct *vma, |
90 | struct page *page, unsigned long vaddr, void *dst, const void *src, |
91 | unsigned long len); |
92 | |
93 | extern void (*flush_cache_sigtramp)(unsigned long addr); |
94 | extern void (*flush_icache_all)(void); |
95 | extern void (*local_flush_data_cache_page)(void * addr); |
96 | extern void (*flush_data_cache_page)(unsigned long addr); |
97 | |
98 | /* |
99 | * This flag is used to indicate that the page pointed to by a pte |
100 | * is dirty and requires cleaning before returning it to the user. |
101 | */ |
102 | #define PG_dcache_dirty PG_arch_1 |
103 | |
104 | #define Page_dcache_dirty(page) \ |
105 | test_bit(PG_dcache_dirty, &(page)->flags) |
106 | #define SetPageDcacheDirty(page) \ |
107 | set_bit(PG_dcache_dirty, &(page)->flags) |
108 | #define ClearPageDcacheDirty(page) \ |
109 | clear_bit(PG_dcache_dirty, &(page)->flags) |
110 | |
111 | /* Run kernel code uncached, useful for cache probing functions. */ |
112 | unsigned long run_uncached(void *func); |
113 | |
114 | extern void *kmap_coherent(struct page *page, unsigned long addr); |
115 | extern void kunmap_coherent(void); |
116 | |
117 | #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE |
118 | static inline void flush_kernel_dcache_page(struct page *page) |
119 | { |
120 | flush_dcache_page(page); |
121 | } |
122 | |
123 | #endif /* _ASM_CACHEFLUSH_H */ |
124 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9