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
  12 #include <linux/init.h>
  13 #include <cpu/cache.h>
  14
  15 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  16
  17 /*
  18  * Some drivers need to perform DMA into kmalloc'ed buffers
  19  * and so we have to increase the kmalloc minalign for this.
  20  */
  21 #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
  22
  23 #define __read_mostly __section(".data..read_mostly")
  24
  25 #ifndef __ASSEMBLY__
  26 struct cache_info {
  27         unsigned int ways;              /* Number of cache ways */
  28         unsigned int sets;              /* Number of cache sets */
  29         unsigned int linesz;            /* Cache line size (bytes) */
  30
  31         unsigned int way_size;          /* sets * line size */
  32
  33         /*
  34          * way_incr is the address offset for accessing the next way
  35          * in memory mapped cache array ops.
  36          */
  37         unsigned int way_incr;
  38         unsigned int entry_shift;
  39         unsigned int entry_mask;
  40
  41         /*
  42          * Compute a mask which selects the address bits which overlap between
  43          * 1. those used to select the cache set during indexing
  44          * 2. those in the physical page number.
  45          */
  46         unsigned int alias_mask;
  47         unsigned int n_aliases;         /* Number of aliases */
  48
  49         unsigned long flags;
  50 };
  51 #endif /* __ASSEMBLY__ */
  52 #endif /* __ASM_SH_CACHE_H */