1 #ifndef __ASM_CACHEFLUSH_H
2 #define __ASM_CACHEFLUSH_H
3 
4 /* Keep includes the same across arches.  */
5 #include <linux/mm.h>
6 
7 /*
8  * The cache doesn't need to be flushed when TLB entries change when
9  * the cache is mapped to physical memory, not virtual memory
10  */
11 #define flush_cache_all()			do { } while (0)
12 #define flush_cache_mm(mm)			do { } while (0)
13 #define flush_cache_dup_mm(mm)			do { } while (0)
14 #define flush_cache_range(vma, start, end)	do { } while (0)
15 #define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
16 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
17 #define flush_dcache_page(page)			do { } while (0)
18 #define flush_dcache_mmap_lock(mapping)		do { } while (0)
19 #define flush_dcache_mmap_unlock(mapping)	do { } while (0)
20 #define flush_icache_range(start, end)		do { } while (0)
21 #define flush_icache_page(vma,pg)		do { } while (0)
22 #define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
23 #define flush_cache_vmap(start, end)		do { } while (0)
24 #define flush_cache_vunmap(start, end)		do { } while (0)
25 
26 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
27 	do { \
28 		memcpy(dst, src, len); \
29 		flush_icache_user_range(vma, page, vaddr, len); \
30 	} while (0)
31 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
32 	memcpy(dst, src, len)
33 
34 #endif /* __ASM_CACHEFLUSH_H */
35