include/asm-powerpc/cache.h

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