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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_CACHEFLUSH_H #define __ASM_CACHEFLUSH_H /* Keep includes the same across arches. */ #include <linux/mm.h> #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 /* * The cache doesn't need to be flushed when TLB entries change when * the cache is mapped to physical memory, not virtual memory */ #ifndef flush_cache_all static inline void flush_cache_all(void) { } #endif #ifndef flush_cache_mm static inline void flush_cache_mm(struct mm_struct *mm) { } #endif #ifndef flush_cache_dup_mm static inline void flush_cache_dup_mm(struct mm_struct *mm) { } #endif #ifndef flush_cache_range static inline void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { } #endif #ifndef flush_cache_page static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn) { } #endif #ifndef flush_dcache_page static inline void flush_dcache_page(struct page *page) { } #endif #ifndef flush_dcache_mmap_lock static inline void flush_dcache_mmap_lock(struct address_space *mapping) { } #endif #ifndef flush_dcache_mmap_unlock static inline void flush_dcache_mmap_unlock(struct address_space *mapping) { } #endif #ifndef flush_icache_range static inline void flush_icache_range(unsigned long start, unsigned long end) { } #endif #ifndef flush_icache_page static inline void flush_icache_page(struct vm_area_struct *vma, struct page *page) { } #endif #ifndef flush_icache_user_range static inline void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len) { } #endif #ifndef flush_cache_vmap static inline void flush_cache_vmap(unsigned long start, unsigned long end) { } #endif #ifndef flush_cache_vunmap static inline void flush_cache_vunmap(unsigned long start, unsigned long end) { } #endif #ifndef copy_to_user_page #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ memcpy(dst, src, len); \ flush_icache_user_range(vma, page, vaddr, len); \ } while (0) #endif #ifndef copy_from_user_page #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ memcpy(dst, src, len) #endif #endif /* __ASM_CACHEFLUSH_H */ |