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  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.