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Linux/arch/sh/include/asm/cache.h

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  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 */
 53 

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