LXR linux/arch/sh/include/asm/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 <linux/init.h>
  13#include <cpu/cache.h>
  14
  15#define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  16
  17#define __read_mostly __attribute__((__section__(".data..read_mostly")))
  18
  19#ifndef __ASSEMBLY__
  20struct cache_info {
  21        unsigned int ways;              /* Number of cache ways */
  22        unsigned int sets;              /* Number of cache sets */
  23        unsigned int linesz;            /* Cache line size (bytes) */
  24
  25        unsigned int way_size;          /* sets * line size */
  26
  27        /*
  28         * way_incr is the address offset for accessing the next way
  29         * in memory mapped cache array ops.
  30         */
  31        unsigned int way_incr;
  32        unsigned int entry_shift;
  33        unsigned int entry_mask;
  34
  35        /*
  36         * Compute a mask which selects the address bits which overlap between
  37         * 1. those used to select the cache set during indexing
  38         * 2. those in the physical page number.
  39         */
  40        unsigned int alias_mask;
  41        unsigned int n_aliases;         /* Number of aliases */
  42
  43        unsigned long flags;
  44};
  45#endif /* __ASSEMBLY__ */
  46#endif /* __KERNEL__ */
  47#endif /* __ASM_SH_CACHE_H */
  48