1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef __ABI_CSKY_CACHEFLUSH_H 4 #define __ABI_CSKY_CACHEFLUSH_H 5 6 #include <linux/mm.h> 7 #include <asm/string.h> 8 #include <asm/cache.h> 9 10 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 11 extern void flush_dcache_page(struct page *); 12 void flush_dcache_folio(struct folio *); 13 #define flush_dcache_folio flush_dcache_folio 14 15 #define flush_cache_mm(mm) dcache_wbinv_all() 16 #define flush_cache_page(vma, page, pfn) cache_wbinv_all() 17 #define flush_cache_dup_mm(mm) cache_wbinv_all() 18 19 #define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 20 #define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 21 22 #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 23 static inline void flush_kernel_vmap_range(void *addr, int size) 24 { 25 dcache_wbinv_all(); 26 } 27 static inline void invalidate_kernel_vmap_range(void *addr, int size) 28 { 29 dcache_wbinv_all(); 30 } 31 32 #define ARCH_HAS_FLUSH_ANON_PAGE 33 static inline void flush_anon_page(struct vm_area_struct *vma, 34 struct page *page, unsigned long vmaddr) 35 { 36 if (PageAnon(page)) 37 cache_wbinv_all(); 38 } 39 40 /* 41 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken. 42 * Use cache_wbinv_all() here and need to be improved in future. 43 */ 44 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); 45 #define flush_cache_vmap(start, end) cache_wbinv_all() 46 #define flush_cache_vunmap(start, end) cache_wbinv_all() 47 48 #define flush_icache_range(start, end) cache_wbinv_range(start, end) 49 #define flush_icache_mm_range(mm, start, end) cache_wbinv_range(start, end) 50 #define flush_icache_deferred(mm) do {} while (0); 51 52 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 53 do { \ 54 memcpy(dst, src, len); \ 55 } while (0) 56 57 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 58 do { \ 59 memcpy(dst, src, len); \ 60 cache_wbinv_all(); \ 61 } while (0) 62 63 #endif /* __ABI_CSKY_CACHEFLUSH_H */ 64