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_PPC_E500MC)
  12 #define L1_CACHE_SHIFT          6
  13 #define MAX_COPY_PREFETCH       4
  14 #elif defined(CONFIG_PPC32)
  15 #define L1_CACHE_SHIFT          5
  16 #define MAX_COPY_PREFETCH       4
  17 #else /* CONFIG_PPC64 */
  18 #define L1_CACHE_SHIFT          7
  19 #endif
  20
  21 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  22
  23 #define SMP_CACHE_BYTES         L1_CACHE_BYTES
  24
  25 #if defined(__powerpc64__) && !defined(__ASSEMBLY__)
  26 struct ppc64_caches {
  27         u32     dsize;                  /* L1 d-cache size */
  28         u32     dline_size;             /* L1 d-cache line size */
  29         u32     log_dline_size;
  30         u32     dlines_per_page;
  31         u32     isize;                  /* L1 i-cache size */
  32         u32     iline_size;             /* L1 i-cache line size */
  33         u32     log_iline_size;
  34         u32     ilines_per_page;
  35 };
  36
  37 extern struct ppc64_caches ppc64_caches;
  38 #endif /* __powerpc64__ && ! __ASSEMBLY__ */
  39
  40 #if !defined(__ASSEMBLY__)
  41 #define __read_mostly __attribute__((__section__(".data.read_mostly")))
  42 #endif
  43
  44 #endif /* __KERNEL__ */
  45 #endif /* _ASM_POWERPC_CACHE_H */