| 1 |
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| 2 | #ifndef __ASM_CACHEFLUSH_H
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| 3 | #define __ASM_CACHEFLUSH_H
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| 4 |
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| 5 |
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| 6 | #include <linux/mm.h>
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| 7 |
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| 8 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
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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 | static inline void flush_cache_all(void)
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| 15 | {
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| 16 | }
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| 17 |
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| 18 | static inline void flush_cache_mm(struct mm_struct *mm)
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| 19 | {
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| 20 | }
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| 21 |
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| 22 | static inline void flush_cache_dup_mm(struct mm_struct *mm)
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| 23 | {
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| 24 | }
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| 25 |
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| 26 | static inline void flush_cache_range(struct vm_area_struct *vma,
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| 27 | unsigned long start,
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| 28 | unsigned long end)
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| 29 | {
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| 30 | }
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| 31 |
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| 32 | static inline void flush_cache_page(struct vm_area_struct *vma,
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| 33 | unsigned long vmaddr,
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| 34 | unsigned long pfn)
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| 35 | {
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| 36 | }
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| 37 |
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| 38 | static inline void flush_dcache_page(struct page *page)
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| 39 | {
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| 40 | }
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| 41 |
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| 42 | static inline void flush_dcache_mmap_lock(struct address_space *mapping)
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| 43 | {
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| 44 | }
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| 45 |
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| 46 | static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
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| 47 | {
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| 48 | }
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| 49 |
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| 50 | static inline void flush_icache_range(unsigned long start, unsigned long end)
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| 51 | {
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| 52 | }
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| 53 |
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| 54 | static inline void flush_icache_page(struct vm_area_struct *vma,
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| 55 | struct page *page)
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| 56 | {
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| 57 | }
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| 58 |
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| 59 | static inline void flush_icache_user_range(struct vm_area_struct *vma,
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| 60 | struct page *page,
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| 61 | unsigned long addr, int len)
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| 62 | {
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| 63 | }
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| 64 |
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| 65 | static inline void flush_cache_vmap(unsigned long start, unsigned long end)
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| 66 | {
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| 67 | }
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| 68 |
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| 69 | static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
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| 70 | {
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| 71 | }
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| 72 |
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| 73 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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| 74 | do { \
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| 75 | memcpy(dst, src, len); \
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| 76 | flush_icache_user_range(vma, page, vaddr, len); \
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| 77 | } while (0)
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| 78 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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| 79 | memcpy(dst, src, len)
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| 80 |
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| 81 | #endif
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