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/* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
*
* include/asm-sh/cache.h
*
* Copyright 1999 (C) Niibe Yutaka
* Copyright 2002, 2003 (C) Paul Mundt
*/
#ifndef __ASM_SH_CACHE_H
#define __ASM_SH_CACHE_H
#ifdef __KERNEL__
#include <asm/cpu/cache.h>
#include <asm/cpu/cacheflush.h>
#define SH_CACHE_VALID 1
#define SH_CACHE_UPDATED 2
#define SH_CACHE_COMBINED 4
#define SH_CACHE_ASSOC 8
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
#define SMP_CACHE_BYTES L1_CACHE_BYTES
#define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
struct cache_info {
unsigned int ways; /* Number of cache ways */
unsigned int sets; /* Number of cache sets */
unsigned int linesz; /* Cache line size (bytes) */
unsigned int way_size; /* sets * line size */
/*
* way_incr is the address offset for accessing the next way
* in memory mapped cache array ops.
*/
unsigned int way_incr;
unsigned int entry_shift;
unsigned int entry_mask;
/*
* Compute a mask which selects the address bits which overlap between
* 1. those used to select the cache set during indexing
* 2. those in the physical page number.
*/
unsigned int alias_mask;
unsigned int n_aliases; /* Number of aliases */
unsigned long flags;
};
/* Flush (write-back only) a region (smaller than a page) */
extern void __flush_wback_region(void *start, int size);
/* Flush (write-back & invalidate) a region (smaller than a page) */
extern void __flush_purge_region(void *start, int size);
/* Flush (invalidate only) a region (smaller than a page) */
extern void __flush_invalidate_region(void *start, int size);
#endif /* __KERNEL__ */
#endif /* __ASM_SH_CACHE_H */
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