include/asm-sh/cache.h

   1 /* $Id: cache.h,v 1.5 2003/07/16 04:08:29 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
  11 #include <asm/cpu/cache.h>
  12 #include <asm/cpu/cacheflush.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 #define L1_CACHE_SHIFT_MAX      5       /* largest L1 which this arch supports */
  25
  26 struct cache_info {
  27         unsigned int ways;
  28         unsigned int sets;
  29         unsigned int linesz;
  30
  31         unsigned int way_incr;
  32
  33         unsigned int entry_shift;
  34         unsigned int entry_mask;
  35
  36         unsigned long flags;
  37 };
  38
  39 /* Flush (write-back only) a region (smaller than a page) */
  40 extern void __flush_wback_region(void *start, int size);
  41 /* Flush (write-back & invalidate) a region (smaller than a page) */
  42 extern void __flush_purge_region(void *start, int size);
  43 /* Flush (invalidate only) a region (smaller than a page) */
  44 extern void __flush_invalidate_region(void *start, int size);
  45
  46 #endif /* __ASM_SH_CACHE_H */
  47