block: add helpers to run flush_dcache_page() against a bio and a request's pages
[linux-2.6.git] / arch / parisc / include / asm / cacheflush.h
1 #ifndef _PARISC_CACHEFLUSH_H
2 #define _PARISC_CACHEFLUSH_H
3
4 #include <linux/mm.h>
5
6 /* The usual comment is "Caches aren't brain-dead on the <architecture>".
7  * Unfortunately, that doesn't apply to PA-RISC. */
8
9 /* Internal implementation */
10 void flush_data_cache_local(void *);  /* flushes local data-cache only */
11 void flush_instruction_cache_local(void *); /* flushes local code-cache only */
12 #ifdef CONFIG_SMP
13 void flush_data_cache(void); /* flushes data-cache only (all processors) */
14 void flush_instruction_cache(void); /* flushes i-cache only (all processors) */
15 #else
16 #define flush_data_cache() flush_data_cache_local(NULL)
17 #define flush_instruction_cache() flush_instruction_cache_local(NULL)
18 #endif
19
20 #define flush_cache_dup_mm(mm) flush_cache_mm(mm)
21
22 void flush_user_icache_range_asm(unsigned long, unsigned long);
23 void flush_kernel_icache_range_asm(unsigned long, unsigned long);
24 void flush_user_dcache_range_asm(unsigned long, unsigned long);
25 void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
26 void flush_kernel_dcache_page_asm(void *);
27 void flush_kernel_icache_page(void *);
28 void flush_user_dcache_page(unsigned long);
29 void flush_user_icache_page(unsigned long);
30 void flush_user_dcache_range(unsigned long, unsigned long);
31 void flush_user_icache_range(unsigned long, unsigned long);
32
33 /* Cache flush operations */
34
35 void flush_cache_all_local(void);
36 void flush_cache_all(void);
37 void flush_cache_mm(struct mm_struct *mm);
38
39 #define flush_kernel_dcache_range(start,size) \
40         flush_kernel_dcache_range_asm((start), (start)+(size));
41
42 #define flush_cache_vmap(start, end)            flush_cache_all()
43 #define flush_cache_vunmap(start, end)          flush_cache_all()
44
45 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
46 extern void flush_dcache_page(struct page *page);
47
48 #define flush_dcache_mmap_lock(mapping) \
49         spin_lock_irq(&(mapping)->tree_lock)
50 #define flush_dcache_mmap_unlock(mapping) \
51         spin_unlock_irq(&(mapping)->tree_lock)
52
53 #define flush_icache_page(vma,page)     do {            \
54         flush_kernel_dcache_page(page);                 \
55         flush_kernel_icache_page(page_address(page));   \
56 } while (0)
57
58 #define flush_icache_range(s,e)         do {            \
59         flush_kernel_dcache_range_asm(s,e);             \
60         flush_kernel_icache_range_asm(s,e);             \
61 } while (0)
62
63 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
64 do { \
65         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
66         memcpy(dst, src, len); \
67         flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
68 } while (0)
69
70 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
71 do { \
72         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
73         memcpy(dst, src, len); \
74 } while (0)
75
76 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
77 void flush_cache_range(struct vm_area_struct *vma,
78                 unsigned long start, unsigned long end);
79
80 #define ARCH_HAS_FLUSH_ANON_PAGE
81 static inline void
82 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
83 {
84         if (PageAnon(page))
85                 flush_user_dcache_page(vmaddr);
86 }
87
88 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
89 void flush_kernel_dcache_page_addr(void *addr);
90 static inline void flush_kernel_dcache_page(struct page *page)
91 {
92         flush_kernel_dcache_page_addr(page_address(page));
93 }
94
95 #ifdef CONFIG_DEBUG_RODATA
96 void mark_rodata_ro(void);
97 #endif
98
99 #ifdef CONFIG_PA8X00
100 /* Only pa8800, pa8900 needs this */
101
102 #include <asm/kmap_types.h>
103
104 #define ARCH_HAS_KMAP
105
106 void kunmap_parisc(void *addr);
107
108 static inline void *kmap(struct page *page)
109 {
110         might_sleep();
111         return page_address(page);
112 }
113
114 #define kunmap(page)                    kunmap_parisc(page_address(page))
115
116 #define kmap_atomic(page, idx)          page_address(page)
117
118 #define kunmap_atomic(addr, idx)        kunmap_parisc(addr)
119
120 #define kmap_atomic_pfn(pfn, idx)       page_address(pfn_to_page(pfn))
121 #define kmap_atomic_to_page(ptr)        virt_to_page(ptr)
122 #endif
123
124 #endif /* _PARISC_CACHEFLUSH_H */
125