block: add helpers to run flush_dcache_page() against a bio and a request's pages
[linux-2.6.git] / arch / sparc / include / asm / cacheflush_64.h
1 #ifndef _SPARC64_CACHEFLUSH_H
2 #define _SPARC64_CACHEFLUSH_H
3
4 #include <asm/page.h>
5
6 #ifndef __ASSEMBLY__
7
8 #include <linux/mm.h>
9
10 /* Cache flush operations. */
11
12 /* These are the same regardless of whether this is an SMP kernel or not. */
13 #define flush_cache_mm(__mm) \
14         do { if ((__mm) == current->mm) flushw_user(); } while(0)
15 #define flush_cache_dup_mm(mm) flush_cache_mm(mm)
16 #define flush_cache_range(vma, start, end) \
17         flush_cache_mm((vma)->vm_mm)
18 #define flush_cache_page(vma, page, pfn) \
19         flush_cache_mm((vma)->vm_mm)
20
21 /*
22  * On spitfire, the icache doesn't snoop local stores and we don't
23  * use block commit stores (which invalidate icache lines) during
24  * module load, so we need this.
25  */
26 extern void flush_icache_range(unsigned long start, unsigned long end);
27 extern void __flush_icache_page(unsigned long);
28
29 extern void __flush_dcache_page(void *addr, int flush_icache);
30 extern void flush_dcache_page_impl(struct page *page);
31 #ifdef CONFIG_SMP
32 extern void smp_flush_dcache_page_impl(struct page *page, int cpu);
33 extern void flush_dcache_page_all(struct mm_struct *mm, struct page *page);
34 #else
35 #define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page)
36 #define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page)
37 #endif
38
39 extern void __flush_dcache_range(unsigned long start, unsigned long end);
40 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
41 extern void flush_dcache_page(struct page *page);
42
43 #define flush_icache_page(vma, pg)      do { } while(0)
44 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
45
46 extern void flush_ptrace_access(struct vm_area_struct *, struct page *,
47                                 unsigned long uaddr, void *kaddr,
48                                 unsigned long len, int write);
49
50 #define copy_to_user_page(vma, page, vaddr, dst, src, len)              \
51         do {                                                            \
52                 flush_cache_page(vma, vaddr, page_to_pfn(page));        \
53                 memcpy(dst, src, len);                                  \
54                 flush_ptrace_access(vma, page, vaddr, src, len, 0);     \
55         } while (0)
56
57 #define copy_from_user_page(vma, page, vaddr, dst, src, len)            \
58         do {                                                            \
59                 flush_cache_page(vma, vaddr, page_to_pfn(page));        \
60                 memcpy(dst, src, len);                                  \
61                 flush_ptrace_access(vma, page, vaddr, dst, len, 1);     \
62         } while (0)
63
64 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
65 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
66
67 #define flush_cache_vmap(start, end)            do { } while (0)
68 #define flush_cache_vunmap(start, end)          do { } while (0)
69
70 #ifdef CONFIG_DEBUG_PAGEALLOC
71 /* internal debugging function */
72 void kernel_map_pages(struct page *page, int numpages, int enable);
73 #endif
74
75 #endif /* !__ASSEMBLY__ */
76
77 #endif /* _SPARC64_CACHEFLUSH_H */