arch/csky/abiv1/inc/abi/cacheflush.h

   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/compiler.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)                      cache_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 /*
  19  * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken.
  20  * Use cache_wbinv_all() here and need to be improved in future.
  21  */
  22 #define flush_cache_range(vma, start, end)      cache_wbinv_all()
  23 #define flush_cache_vmap(start, end)            cache_wbinv_range(start, end)
  24 #define flush_cache_vunmap(start, end)          cache_wbinv_range(start, end)
  25
  26 #define flush_icache_page(vma, page)            cache_wbinv_all()
  27 #define flush_icache_range(start, end)          cache_wbinv_range(start, end)
  28
  29 #define flush_icache_user_range(vma, pg, adr, len) \
  30                                 cache_wbinv_range(adr, adr + len)
  31
  32 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  33 do { \
  34         cache_wbinv_all(); \
  35         memcpy(dst, src, len); \
  36         cache_wbinv_all(); \
  37 } while (0)
  38
  39 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  40 do { \
  41         cache_wbinv_all(); \
  42         memcpy(dst, src, len); \
  43         cache_wbinv_all(); \
  44 } while (0)
  45
  46 #define flush_dcache_mmap_lock(mapping)         do {} while (0)
  47 #define flush_dcache_mmap_unlock(mapping)       do {} while (0)
  48
  49 #endif /* __ABI_CSKY_CACHEFLUSH_H */