include/asm-powerpc/cache.h

   1 #ifndef _ASM_POWERPC_CACHE_H
   2 #define _ASM_POWERPC_CACHE_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/config.h>
   7
   8 /* bytes per L1 cache line */
   9 #if defined(CONFIG_8xx) || defined(CONFIG_403GCX)
  10 #define L1_CACHE_SHIFT          4
  11 #define MAX_COPY_PREFETCH       1
  12 #elif defined(CONFIG_PPC32)
  13 #define L1_CACHE_SHIFT          5
  14 #define MAX_COPY_PREFETCH       4
  15 #else /* CONFIG_PPC64 */
  16 #define L1_CACHE_SHIFT          7
  17 #endif
  18
  19 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  20
  21 #define SMP_CACHE_BYTES         L1_CACHE_BYTES
  22 #define L1_CACHE_SHIFT_MAX      7 /* largest L1 which this arch supports */
  23
  24 #if defined(__powerpc64__) && !defined(__ASSEMBLY__)
  25 struct ppc64_caches {
  26         u32     dsize;                  /* L1 d-cache size */
  27         u32     dline_size;             /* L1 d-cache line size */
  28         u32     log_dline_size;
  29         u32     dlines_per_page;
  30         u32     isize;                  /* L1 i-cache size */
  31         u32     iline_size;             /* L1 i-cache line size */
  32         u32     log_iline_size;
  33         u32     ilines_per_page;
  34 };
  35
  36 extern struct ppc64_caches ppc64_caches;
  37 #endif /* __powerpc64__ && ! __ASSEMBLY__ */
  38
  39 #endif /* __KERNEL__ */
  40 #endif /* _ASM_POWERPC_CACHE_H */