include/asm-sh/cache.h

   1 #ifndef __ASM_SH_CACHE_H
   2 #define __ASM_SH_CACHE_H
   3
   4 #if defined(CONFIG_SH4) || defined(CONFIG_SH4A)
   5
   6 #define L1_CACHE_BYTES 32
   7 struct __large_struct { unsigned long buf[100]; };
   8 #define __m(x) (*(struct __large_struct *)(x))
   9
  10 void dcache_wback_range(u32 start, u32 end)
  11 {
  12     u32 v;
  13
  14     start &= ~(L1_CACHE_BYTES-1);
  15     for (v = start; v < end; v+=L1_CACHE_BYTES) {
  16         asm volatile("ocbwb     %0"
  17                      : /* no output */
  18                      : "m" (__m(v)));
  19     }
  20 }
  21
  22 void dcache_invalid_range(u32 start, u32 end)
  23 {
  24     u32 v;
  25
  26     start &= ~(L1_CACHE_BYTES-1);
  27     for (v = start; v < end; v+=L1_CACHE_BYTES) {
  28         asm volatile("ocbi     %0"
  29                      : /* no output */
  30                      : "m" (__m(v)));
  31     }
  32 }
  33 #endif /* CONFIG_SH4 || CONFIG_SH4A */
  34
  35 #endif  /* __ASM_SH_CACHE_H */