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_page(pg) flushes(wback&invalidates) a page for dcache 17 * - flush_icache_range(start, end) flushes(invalidates) a range for icache 18 * - flush_icache_page(vma, pg) flushes(invalidates) a page 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_page)(void *args); 27 extern void (*local_flush_icache_range)(void *args); 28 extern void (*local_flush_icache_page)(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 extern void flush_dcache_page(struct page *page); 46 extern void flush_icache_range(unsigned long start, unsigned long end); 47 #define flush_icache_user_range flush_icache_range 48 extern void flush_icache_page(struct vm_area_struct *vma, 49 struct page *page); 50 extern void flush_cache_sigtramp(unsigned long address); 51 52 struct flusher_data { 53 struct vm_area_struct *vma; 54 unsigned long addr1, addr2; 55 }; 56 57 #define ARCH_HAS_FLUSH_ANON_PAGE 58 extern void __flush_anon_page(struct page *page, unsigned long); 59 60 static inline void flush_anon_page(struct vm_area_struct *vma, 61 struct page *page, unsigned long vmaddr) 62 { 63 if (boot_cpu_data.dcache.n_aliases && PageAnon(page)) 64 __flush_anon_page(page, vmaddr); 65 } 66 static inline void flush_kernel_vmap_range(void *addr, int size) 67 { 68 __flush_wback_region(addr, size); 69 } 70 static inline void invalidate_kernel_vmap_range(void *addr, int size) 71 { 72 __flush_invalidate_region(addr, size); 73 } 74 75 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE 76 static inline void flush_kernel_dcache_page(struct page *page) 77 { 78 flush_dcache_page(page); 79 } 80 81 extern void copy_to_user_page(struct vm_area_struct *vma, 82 struct page *page, unsigned long vaddr, void *dst, const void *src, 83 unsigned long len); 84 85 extern void copy_from_user_page(struct vm_area_struct *vma, 86 struct page *page, unsigned long vaddr, void *dst, const void *src, 87 unsigned long len); 88 89 #define flush_cache_vmap(start, end) local_flush_cache_all(NULL) 90 #define flush_cache_vunmap(start, end) local_flush_cache_all(NULL) 91 92 #define flush_dcache_mmap_lock(mapping) do { } while (0) 93 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 94 95 void kmap_coherent_init(void); 96 void *kmap_coherent(struct page *page, unsigned long addr); 97 void kunmap_coherent(void *kvaddr); 98 99 #define PG_dcache_clean PG_arch_1 100 101 void cpu_cache_init(void); 102 103 static inline void *sh_cacheop_vaddr(void *vaddr) 104 { 105 if (__in_29bit_mode()) 106 vaddr = (void *)CAC_ADDR((unsigned long)vaddr); 107 return vaddr; 108 } 109 110 #endif /* __ASM_SH_CACHEFLUSH_H */ 111