1 /* SPDX-License-Identifier: GPL-2.0 */ 2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 3 4 #ifndef __ABI_CSKY_CACHEFLUSH_H 5 #define __ABI_CSKY_CACHEFLUSH_H 6 7 #include <linux/mm.h> 8 #include <asm/string.h> 9 #include <asm/cache.h> 10 11 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 12 extern void flush_dcache_page(struct page *); 13 14 #define flush_cache_mm(mm) dcache_wbinv_all() 15 #define flush_cache_page(vma, page, pfn) cache_wbinv_all() 16 #define flush_cache_dup_mm(mm) cache_wbinv_all() 17 18 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE 19 extern void flush_kernel_dcache_page(struct page *); 20 21 #define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 22 #define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 23 24 static inline void flush_kernel_vmap_range(void *addr, int size) 25 { 26 dcache_wbinv_all(); 27 } 28 static inline void invalidate_kernel_vmap_range(void *addr, int size) 29 { 30 dcache_wbinv_all(); 31 } 32 33 #define ARCH_HAS_FLUSH_ANON_PAGE 34 static inline void flush_anon_page(struct vm_area_struct *vma, 35 struct page *page, unsigned long vmaddr) 36 { 37 if (PageAnon(page)) 38 cache_wbinv_all(); 39 } 40 41 /* 42 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken. 43 * Use cache_wbinv_all() here and need to be improved in future. 44 */ 45 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); 46 #define flush_cache_vmap(start, end) cache_wbinv_all() 47 #define flush_cache_vunmap(start, end) cache_wbinv_all() 48 49 #define flush_icache_page(vma, page) do {} while (0); 50 #define flush_icache_range(start, end) cache_wbinv_range(start, end) 51 #define flush_icache_mm_range(mm, start, end) cache_wbinv_range(start, end) 52 #define flush_icache_deferred(mm) do {} while (0); 53 54 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 55 do { \ 56 memcpy(dst, src, len); \ 57 } while (0) 58 59 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 60 do { \ 61 memcpy(dst, src, len); \ 62 cache_wbinv_all(); \ 63 } while (0) 64 65 #endif /* __ABI_CSKY_CACHEFLUSH_H */ 66