arch/sh/include/asm/cache.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
   3  *
   4  * include/asm-sh/cache.h
   5  *
   6  * Copyright 1999 (C) Niibe Yutaka
   7  * Copyright 2002, 2003 (C) Paul Mundt
   8  */
   9 #ifndef __ASM_SH_CACHE_H
  10 #define __ASM_SH_CACHE_H
  11 #ifdef __KERNEL__
  12
  13 #include <linux/init.h>
  14 #include <cpu/cache.h>
  15
  16 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  17
  18 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
  19
  20 #ifndef __ASSEMBLY__
  21 struct cache_info {
  22         unsigned int ways;              /* Number of cache ways */
  23         unsigned int sets;              /* Number of cache sets */
  24         unsigned int linesz;            /* Cache line size (bytes) */
  25
  26         unsigned int way_size;          /* sets * line size */
  27
  28         /*
  29          * way_incr is the address offset for accessing the next way
  30          * in memory mapped cache array ops.
  31          */
  32         unsigned int way_incr;
  33         unsigned int entry_shift;
  34         unsigned int entry_mask;
  35
  36         /*
  37          * Compute a mask which selects the address bits which overlap between
  38          * 1. those used to select the cache set during indexing
  39          * 2. those in the physical page number.
  40          */
  41         unsigned int alias_mask;
  42         unsigned int n_aliases;         /* Number of aliases */
  43
  44         unsigned long flags;
  45 };
  46 #endif /* __ASSEMBLY__ */
  47 #endif /* __KERNEL__ */
  48 #endif /* __ASM_SH_CACHE_H */