1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_SH_CACHEFLUSH_H 3 #define __ASM_SH_CACHEFLUSH_H 4 5 #include <linux/mm.h> 6 7 /* 8 * Cache flushing: 9 * 10 * - flush_cache_all() flushes entire cache 11 * - flush_cache_mm(mm) flushes the specified mm context's cache lines 12 * - flush_cache_dup mm(mm) handles cache flushing when forking 13 * - flush_cache_page(mm, vmaddr, pfn) flushes a single page 14 * - flush_cache_range(vma, start, end) flushes a range of pages 15 * 16 * - flush_dcache_folio(folio) flushes(wback&invalidates) a folio for dcache 17 * - flush_icache_range(start, end) flushes(invalidates) a range for icache 18 * - flush_icache_pages(vma, pg, nr) flushes(invalidates) pages for icache 19 * - flush_cache_sigtramp(vaddr) flushes the signal trampoline 20 */ 21 extern void (*local_flush_cache_all)(void *args); 22 extern void (*local_flush_cache_mm)(void *args); 23 extern void (*local_flush_cache_dup_mm)(void *args); 24 extern void (*local_flush_cache_page)(void *args); 25 extern void (*local_flush_cache_range)(void *args); 26 extern void (*local_flush_dcache_folio)(void *args); 27 extern void (*local_flush_icache_range)(void *args); 28 extern void (*local_flush_icache_folio)(void *args); 29 extern void (*local_flush_cache_sigtramp)(void *args); 30 31 static inline void cache_noop(void *args) { } 32 33 extern void (*__flush_wback_region)(void *start, int size); 34 extern void (*__flush_purge_region)(void *start, int size); 35 extern void (*__flush_invalidate_region)(void *start, int size); 36 37 extern void flush_cache_all(void); 38 extern void flush_cache_mm(struct mm_struct *mm); 39 extern void flush_cache_dup_mm(struct mm_struct *mm); 40 extern void flush_cache_page(struct vm_area_struct *vma, 41 unsigned long addr, unsigned long pfn); 42 extern void flush_cache_range(struct vm_area_struct *vma, 43 unsigned long start, unsigned long end); 44 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 45 void flush_dcache_folio(struct folio *folio); 46 #define flush_dcache_folio flush_dcache_folio 47 static inline void flush_dcache_page(struct page *page) 48 { 49 flush_dcache_folio(page_folio(page)); 50 } 51 52 extern void flush_icache_range(unsigned long start, unsigned long end); 53 #define flush_icache_user_range flush_icache_range 54 void flush_icache_pages(struct vm_area_struct *vma, struct page *page, 55 unsigned int nr); 56 #define flush_icache_pages flush_icache_pages 57 extern void flush_cache_sigtramp(unsigned long address); 58 59 struct flusher_data { 60 struct vm_area_struct *vma; 61 unsigned long addr1, addr2; 62 }; 63 64 #define ARCH_HAS_FLUSH_ANON_PAGE 65 extern void __flush_anon_page(struct page *page, unsigned long); 66 67 static inline void flush_anon_page(struct vm_area_struct *vma, 68 struct page *page, unsigned long vmaddr) 69 { 70 if (boot_cpu_data.dcache.n_aliases && PageAnon(page)) 71 __flush_anon_page(page, vmaddr); 72 } 73 74 #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 75 static inline void flush_kernel_vmap_range(void *addr, int size) 76 { 77 __flush_wback_region(addr, size); 78 } 79 static inline void invalidate_kernel_vmap_range(void *addr, int size) 80 { 81 __flush_invalidate_region(addr, size); 82 } 83 84 extern void copy_to_user_page(struct vm_area_struct *vma, 85 struct page *page, unsigned long vaddr, void *dst, const void *src, 86 unsigned long len); 87 88 extern void copy_from_user_page(struct vm_area_struct *vma, 89 struct page *page, unsigned long vaddr, void *dst, const void *src, 90 unsigned long len); 91 92 #define flush_cache_vmap(start, end) local_flush_cache_all(NULL) 93 #define flush_cache_vmap_early(start, end) do { } while (0) 94 #define flush_cache_vunmap(start, end) local_flush_cache_all(NULL) 95 96 #define flush_dcache_mmap_lock(mapping) do { } while (0) 97 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 98 99 void kmap_coherent_init(void); 100 void *kmap_coherent(struct page *page, unsigned long addr); 101 void kunmap_coherent(void *kvaddr); 102 103 #define PG_dcache_clean PG_arch_1 104 105 void cpu_cache_init(void); 106 107 void __weak l2_cache_init(void); 108 109 void __weak j2_cache_init(void); 110 void __weak sh2_cache_init(void); 111 void __weak sh2a_cache_init(void); 112 void __weak sh3_cache_init(void); 113 void __weak shx3_cache_init(void); 114 void __weak sh4_cache_init(void); 115 void __weak sh7705_cache_init(void); 116 117 void __weak sh4__flush_region_init(void); 118 119 static inline void *sh_cacheop_vaddr(void *vaddr) 120 { 121 if (__in_29bit_mode()) 122 vaddr = (void *)CAC_ADDR((unsigned long)vaddr); 123 return vaddr; 124 } 125 126 #endif /* __ASM_SH_CACHEFLUSH_H */ 127