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 #include <asm/cpu/cacheflush.h>
  14
  15 #define SH_CACHE_VALID          1
  16 #define SH_CACHE_UPDATED        2
  17 #define SH_CACHE_COMBINED       4
  18 #define SH_CACHE_ASSOC          8
  19
  20 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  21 #define SMP_CACHE_BYTES         L1_CACHE_BYTES
  22
  23 #define L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
  24
  25 #define L1_CACHE_SHIFT_MAX      5       /* largest L1 which this arch supports */
  26
  27 struct cache_info {
  28         unsigned int ways;
  29         unsigned int sets;
  30         unsigned int linesz;
  31
  32         unsigned int way_incr;
  33
  34         unsigned int entry_shift;
  35         unsigned int entry_mask;
  36
  37         unsigned long flags;
  38 };
  39
  40 /* Flush (write-back only) a region (smaller than a page) */
  41 extern void __flush_wback_region(void *start, int size);
  42 /* Flush (write-back & invalidate) a region (smaller than a page) */
  43 extern void __flush_purge_region(void *start, int size);
  44 /* Flush (invalidate only) a region (smaller than a page) */
  45 extern void __flush_invalidate_region(void *start, int size);
  46
  47 #endif /* __KERNEL__ */
  48 #endif /* __ASM_SH_CACHE_H */