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1da177e4 LT |
1 | #ifndef _PPC64_CACHEFLUSH_H |
2 | #define _PPC64_CACHEFLUSH_H | |
3 | ||
4 | #include <linux/mm.h> | |
5 | #include <asm/cputable.h> | |
6 | ||
7 | /* | |
8 | * No cache flushing is required when address mappings are | |
9 | * changed, because the caches on PowerPCs are physically | |
10 | * addressed. | |
11 | */ | |
12 | #define flush_cache_all() do { } while (0) | |
13 | #define flush_cache_mm(mm) do { } while (0) | |
14 | #define flush_cache_range(vma, start, end) do { } while (0) | |
15 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) | |
16 | #define flush_icache_page(vma, page) do { } while (0) | |
17 | #define flush_cache_vmap(start, end) do { } while (0) | |
18 | #define flush_cache_vunmap(start, end) do { } while (0) | |
19 | ||
20 | extern void flush_dcache_page(struct page *page); | |
21 | #define flush_dcache_mmap_lock(mapping) do { } while (0) | |
22 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) | |
23 | ||
24 | extern void __flush_icache_range(unsigned long, unsigned long); | |
25 | extern void flush_icache_user_range(struct vm_area_struct *vma, | |
26 | struct page *page, unsigned long addr, | |
27 | int len); | |
28 | ||
29 | extern void flush_dcache_range(unsigned long start, unsigned long stop); | |
30 | extern void flush_dcache_phys_range(unsigned long start, unsigned long stop); | |
31 | extern void flush_inval_dcache_range(unsigned long start, unsigned long stop); | |
32 | ||
33 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ | |
34 | do { memcpy(dst, src, len); \ | |
35 | flush_icache_user_range(vma, page, vaddr, len); \ | |
36 | } while (0) | |
37 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ | |
38 | memcpy(dst, src, len) | |
39 | ||
40 | extern void __flush_dcache_icache(void *page_va); | |
41 | ||
42 | static inline void flush_icache_range(unsigned long start, unsigned long stop) | |
43 | { | |
44 | if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) | |
45 | __flush_icache_range(start, stop); | |
46 | } | |
47 | ||
48 | #endif /* _PPC64_CACHEFLUSH_H */ |