include/asm-sh/cache.h

   1 /* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
   2  *
   3  * include/asm-sh/cache.h
   4  *
   5  * Copyright 1999 (C) Niibe Yutaka
   6  * Copyright 2002, 2003 (C) Paul Mundt
   7  */
   8 #ifndef __ASM_SH_CACHE_H
   9 #define __ASM_SH_CACHE_H
  10 #ifdef __KERNEL__
  11
  12 #include <asm/cpu/cache.h>
  13
  14 #define SH_CACHE_VALID          1
  15 #define SH_CACHE_UPDATED        2
  16 #define SH_CACHE_COMBINED       4
  17 #define SH_CACHE_ASSOC          8
  18
  19 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  20 #define SMP_CACHE_BYTES         L1_CACHE_BYTES
  21
  22 #define L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
  23
  24 struct cache_info {
  25         unsigned int ways;              /* Number of cache ways */
  26         unsigned int sets;              /* Number of cache sets */
  27         unsigned int linesz;            /* Cache line size (bytes) */
  28
  29         unsigned int way_size;          /* sets * line size */
  30
  31         /*
  32          * way_incr is the address offset for accessing the next way
  33          * in memory mapped cache array ops.
  34          */
  35         unsigned int way_incr;
  36         unsigned int entry_shift;
  37         unsigned int entry_mask;
  38
  39         /*
  40          * Compute a mask which selects the address bits which overlap between
  41          * 1. those used to select the cache set during indexing
  42          * 2. those in the physical page number.
  43          */
  44         unsigned int alias_mask;
  45
  46         unsigned int n_aliases;         /* Number of aliases */
  47
  48         unsigned long flags;
  49 };
  50
  51 #endif /* __KERNEL__ */
  52 #endif /* __ASM_SH_CACHE_H */