1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef __ABI_CSKY_CACHEFLUSH_H 4 #define __ABI_CSKY_CACHEFLUSH_H 5 6 /* Keep includes the same across arches. */ 7 #include <linux/mm.h> 8 9 /* 10 * The cache doesn't need to be flushed when TLB entries change when 11 * the cache is mapped to physical memory, not virtual memory 12 */ 13 #define flush_cache_all() do { } while (0) 14 #define flush_cache_mm(mm) do { } while (0) 15 #define flush_cache_dup_mm(mm) do { } while (0) 16 #define flush_cache_range(vma, start, end) do { } while (0) 17 #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) 18 19 #define PG_dcache_clean PG_arch_1 20 21 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 22 static inline void flush_dcache_page(struct page *page) 23 { 24 if (test_bit(PG_dcache_clean, &page->flags)) 25 clear_bit(PG_dcache_clean, &page->flags); 26 } 27 28 #define flush_dcache_mmap_lock(mapping) do { } while (0) 29 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 30 #define flush_icache_page(vma, page) do { } while (0) 31 32 #define flush_icache_range(start, end) cache_wbinv_range(start, end) 33 34 #define flush_cache_vmap(start, end) do { } while (0) 35 #define flush_cache_vunmap(start, end) do { } while (0) 36 37 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 38 do { \ 39 memcpy(dst, src, len); \ 40 cache_wbinv_range((unsigned long)dst, (unsigned long)dst + len); \ 41 } while (0) 42 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 43 memcpy(dst, src, len) 44 45 #endif /* __ABI_CSKY_CACHEFLUSH_H */ 46