724395143f268c3727d716d9dd02cba87ca2c859
[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 extern void flush_dcache_page(struct page *page);
46
47 #define flush_dcache_mmap_lock(mapping) \
48         spin_lock_irq(&(mapping)->tree_lock)
49 #define flush_dcache_mmap_unlock(mapping) \
50         spin_unlock_irq(&(mapping)->tree_lock)
51
52 #define flush_icache_page(vma,page)     do {            \
53         flush_kernel_dcache_page(page);                 \
54         flush_kernel_icache_page(page_address(page));   \
55 } while (0)
56
57 #define flush_icache_range(s,e)         do {            \
58         flush_kernel_dcache_range_asm(s,e);             \
59         flush_kernel_icache_range_asm(s,e);             \
60 } while (0)
61
62 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
63 do { \
64         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
65         memcpy(dst, src, len); \
66         flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
67 } while (0)
68
69 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
70 do { \
71         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
72         memcpy(dst, src, len); \
73 } while (0)
74
75 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
76 void flush_cache_range(struct vm_area_struct *vma,
77                 unsigned long start, unsigned long end);
78
79 #define ARCH_HAS_FLUSH_ANON_PAGE
80 static inline void
81 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
82 {
83         if (PageAnon(page))
84                 flush_user_dcache_page(vmaddr);
85 }
86
87 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
88 void flush_kernel_dcache_page_addr(void *addr);
89 static inline void flush_kernel_dcache_page(struct page *page)
90 {
91         flush_kernel_dcache_page_addr(page_address(page));
92 }
93
94 #ifdef CONFIG_DEBUG_RODATA
95 void mark_rodata_ro(void);
96 #endif
97
98 #ifdef CONFIG_PA8X00
99 /* Only pa8800, pa8900 needs this */
100
101 #include <asm/kmap_types.h>
102
103 #define ARCH_HAS_KMAP
104
105 void kunmap_parisc(void *addr);
106
107 static inline void *kmap(struct page *page)
108 {
109         might_sleep();
110         return page_address(page);
111 }
112
113 #define kunmap(page)                    kunmap_parisc(page_address(page))
114
115 #define kmap_atomic(page, idx)          page_address(page)
116
117 #define kunmap_atomic(addr, idx)        kunmap_parisc(addr)
118
119 #define kmap_atomic_pfn(pfn, idx)       page_address(pfn_to_page(pfn))
120 #define kmap_atomic_to_page(ptr)        virt_to_page(ptr)
121 #endif
122
123 #endif /* _PARISC_CACHEFLUSH_H */
124