| 1 |
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| 2 | #ifndef _ASM_GENERIC_CACHEFLUSH_H
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| 3 | #define _ASM_GENERIC_CACHEFLUSH_H
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| 4 |
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| 5 | struct mm_struct;
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| 6 | struct vm_area_struct;
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| 7 | struct page;
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| 8 | struct address_space;
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| 9 |
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| 10 | |
| 11 | * The cache doesn't need to be flushed when TLB entries change when
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| 12 | * the cache is mapped to physical memory, not virtual memory
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| 13 |
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| 14 | #ifndef flush_cache_all
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| 15 | static inline void flush_cache_all(void)
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| 16 | {
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| 17 | }
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| 18 | #endif
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| 19 |
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| 20 | #ifndef flush_cache_mm
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| 21 | static inline void flush_cache_mm(struct mm_struct *mm)
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| 22 | {
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| 23 | }
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| 24 | #endif
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| 25 |
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| 26 | #ifndef flush_cache_dup_mm
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| 27 | static inline void flush_cache_dup_mm(struct mm_struct *mm)
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| 28 | {
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| 29 | }
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| 30 | #endif
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| 31 |
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| 32 | #ifndef flush_cache_range
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| 33 | static inline void flush_cache_range(struct vm_area_struct *vma,
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| 34 | unsigned long start,
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| 35 | unsigned long end)
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| 36 | {
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| 37 | }
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| 38 | #endif
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| 39 |
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| 40 | #ifndef flush_cache_page
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| 41 | static inline void flush_cache_page(struct vm_area_struct *vma,
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| 42 | unsigned long vmaddr,
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| 43 | unsigned long pfn)
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| 44 | {
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| 45 | }
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| 46 | #endif
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| 47 |
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| 48 | #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
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| 49 | static inline void flush_dcache_page(struct page *page)
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| 50 | {
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| 51 | }
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| 52 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
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| 53 | #endif
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| 54 |
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| 55 |
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| 56 | #ifndef flush_dcache_mmap_lock
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| 57 | static inline void flush_dcache_mmap_lock(struct address_space *mapping)
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| 58 | {
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| 59 | }
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| 60 | #endif
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| 61 |
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| 62 | #ifndef flush_dcache_mmap_unlock
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| 63 | static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
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| 64 | {
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| 65 | }
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| 66 | #endif
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| 67 |
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| 68 | #ifndef flush_icache_range
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| 69 | static inline void flush_icache_range(unsigned long start, unsigned long end)
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| 70 | {
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| 71 | }
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| 72 | #endif
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| 73 |
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| 74 | #ifndef flush_icache_user_range
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| 75 | #define flush_icache_user_range flush_icache_range
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| 76 | #endif
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| 77 |
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| 78 | #ifndef flush_icache_page
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| 79 | static inline void flush_icache_page(struct vm_area_struct *vma,
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| 80 | struct page *page)
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| 81 | {
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| 82 | }
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| 83 | #endif
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| 84 |
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| 85 | #ifndef flush_icache_user_page
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| 86 | static inline void flush_icache_user_page(struct vm_area_struct *vma,
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| 87 | struct page *page,
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| 88 | unsigned long addr, int len)
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| 89 | {
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| 90 | }
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| 91 | #endif
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| 92 |
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| 93 | #ifndef flush_cache_vmap
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| 94 | static inline void flush_cache_vmap(unsigned long start, unsigned long end)
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| 95 | {
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| 96 | }
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| 97 | #endif
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| 98 |
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| 99 | #ifndef flush_cache_vunmap
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| 100 | static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
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| 101 | {
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| 102 | }
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| 103 | #endif
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| 104 |
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| 105 | #ifndef copy_to_user_page
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| 106 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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| 107 | do { \
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| 108 | memcpy(dst, src, len); \
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| 109 | flush_icache_user_page(vma, page, vaddr, len); \
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| 110 | } while (0)
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| 111 | #endif
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| 112 |
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| 113 | #ifndef copy_from_user_page
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| 114 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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| 115 | memcpy(dst, src, len)
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| 116 | #endif
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| 117 |
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| 118 | #endif
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