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 */ 21extern void (*local_flush_cache_all)(void *args); 22extern void (*local_flush_cache_mm)(void *args); 23extern void (*local_flush_cache_dup_mm)(void *args); 24extern void (*local_flush_cache_page)(void *args); 25extern void (*local_flush_cache_range)(void *args); 26extern void (*local_flush_dcache_folio)(void *args); 27extern void (*local_flush_icache_range)(void *args); 28extern void (*local_flush_icache_folio)(void *args); 29extern void (*local_flush_cache_sigtramp)(void *args); 30 31static inline void cache_noop(void *args) { } 32 33extern void (*__flush_wback_region)(void *start, int size); 34extern void (*__flush_purge_region)(void *start, int size); 35extern void (*__flush_invalidate_region)(void *start, int size); 36 37extern void flush_cache_all(void); 38extern void flush_cache_mm(struct mm_struct *mm); 39extern void flush_cache_dup_mm(struct mm_struct *mm); 40extern void flush_cache_page(struct vm_area_struct *vma, 41 unsigned long addr, unsigned long pfn); 42extern void flush_cache_range(struct vm_area_struct *vma, 43 unsigned long start, unsigned long end); 44#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 45void flush_dcache_folio(struct folio *folio); 46#define flush_dcache_folio flush_dcache_folio 47static inline void flush_dcache_page(struct page *page) 48{ 49 flush_dcache_folio(page_folio(page)); 50} 51 52extern void flush_icache_range(unsigned long start, unsigned long end); 53#define flush_icache_user_range flush_icache_range 54void flush_icache_pages(struct vm_area_struct *vma, struct page *page, 55 unsigned int nr); 56#define flush_icache_pages flush_icache_pages 57extern void flush_cache_sigtramp(unsigned long address); 58 59struct flusher_data { 60 struct vm_area_struct *vma; 61 unsigned long addr1, addr2; 62}; 63 64#define ARCH_HAS_FLUSH_ANON_PAGE 65extern void __flush_anon_page(struct page *page, unsigned long); 66 67static 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 75static inline void flush_kernel_vmap_range(void *addr, int size) 76{ 77 __flush_wback_region(addr, size); 78} 79static inline void invalidate_kernel_vmap_range(void *addr, int size) 80{ 81 __flush_invalidate_region(addr, size); 82} 83 84extern 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 88extern 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 99void kmap_coherent_init(void); 100void *kmap_coherent(struct page *page, unsigned long addr); 101void kunmap_coherent(void *kvaddr); 102 103#define PG_dcache_clean PG_arch_1 104 105void cpu_cache_init(void); 106 107static inline void *sh_cacheop_vaddr(void *vaddr) 108{ 109 if (__in_29bit_mode()) 110 vaddr = (void *)CAC_ADDR((unsigned long)vaddr); 111 return vaddr; 112} 113 114#endif /* __ASM_SH_CACHEFLUSH_H */ 115