diff options
Diffstat (limited to 'include/asm-sparc64/cacheflush.h')
-rw-r--r-- | include/asm-sparc64/cacheflush.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/include/asm-sparc64/cacheflush.h b/include/asm-sparc64/cacheflush.h new file mode 100644 index 000000000000..86f02937ff1b --- /dev/null +++ b/include/asm-sparc64/cacheflush.h | |||
@@ -0,0 +1,72 @@ | |||
1 | #ifndef _SPARC64_CACHEFLUSH_H | ||
2 | #define _SPARC64_CACHEFLUSH_H | ||
3 | |||
4 | #include <linux/config.h> | ||
5 | #include <asm/page.h> | ||
6 | |||
7 | /* Flushing for D-cache alias handling is only needed if | ||
8 | * the page size is smaller than 16K. | ||
9 | */ | ||
10 | #if PAGE_SHIFT < 14 | ||
11 | #define DCACHE_ALIASING_POSSIBLE | ||
12 | #endif | ||
13 | |||
14 | #ifndef __ASSEMBLY__ | ||
15 | |||
16 | #include <linux/mm.h> | ||
17 | |||
18 | /* Cache flush operations. */ | ||
19 | |||
20 | /* These are the same regardless of whether this is an SMP kernel or not. */ | ||
21 | #define flush_cache_mm(__mm) \ | ||
22 | do { if ((__mm) == current->mm) flushw_user(); } while(0) | ||
23 | #define flush_cache_range(vma, start, end) \ | ||
24 | flush_cache_mm((vma)->vm_mm) | ||
25 | #define flush_cache_page(vma, page, pfn) \ | ||
26 | flush_cache_mm((vma)->vm_mm) | ||
27 | |||
28 | /* | ||
29 | * On spitfire, the icache doesn't snoop local stores and we don't | ||
30 | * use block commit stores (which invalidate icache lines) during | ||
31 | * module load, so we need this. | ||
32 | */ | ||
33 | extern void flush_icache_range(unsigned long start, unsigned long end); | ||
34 | extern void __flush_icache_page(unsigned long); | ||
35 | |||
36 | extern void __flush_dcache_page(void *addr, int flush_icache); | ||
37 | extern void flush_dcache_page_impl(struct page *page); | ||
38 | #ifdef CONFIG_SMP | ||
39 | extern void smp_flush_dcache_page_impl(struct page *page, int cpu); | ||
40 | extern void flush_dcache_page_all(struct mm_struct *mm, struct page *page); | ||
41 | #else | ||
42 | #define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page) | ||
43 | #define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page) | ||
44 | #endif | ||
45 | |||
46 | extern void __flush_dcache_range(unsigned long start, unsigned long end); | ||
47 | extern void flush_dcache_page(struct page *page); | ||
48 | |||
49 | #define flush_icache_page(vma, pg) do { } while(0) | ||
50 | #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) | ||
51 | |||
52 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ | ||
53 | do { \ | ||
54 | flush_cache_page(vma, vaddr, page_to_pfn(page));\ | ||
55 | memcpy(dst, src, len); \ | ||
56 | } while (0) | ||
57 | |||
58 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ | ||
59 | do { \ | ||
60 | flush_cache_page(vma, vaddr, page_to_pfn(page));\ | ||
61 | memcpy(dst, src, len); \ | ||
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 | #endif /* !__ASSEMBLY__ */ | ||
71 | |||
72 | #endif /* _SPARC64_CACHEFLUSH_H */ | ||