cache.h

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/* MN103E010 Cache specification
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#ifndef _ASM_PROC_CACHE_H
#define _ASM_PROC_CACHE_H

/* L1 cache */

#define L1_CACHE_NWAYS      4   /* number of ways in caches */
#define L1_CACHE_NENTRIES   256 /* number of entries in each way */
#define L1_CACHE_BYTES      16  /* bytes per entry */
#define L1_CACHE_SHIFT      4   /* shift for bytes per entry */
#define L1_CACHE_WAYDISP    0x1000  /* displacement of one way from the next */

#define L1_CACHE_TAG_VALID  0x00000001  /* cache tag valid bit */
#define L1_CACHE_TAG_DIRTY  0x00000008  /* data cache tag dirty bit */
#define L1_CACHE_TAG_ENTRY  0x00000ff0  /* cache tag entry address mask */
#define L1_CACHE_TAG_ADDRESS    0xfffff000  /* cache tag line address mask */
#define L1_CACHE_TAG_MASK   +(L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY)

/*
 * specification of the interval between interrupt checking intervals whilst
 * managing the cache with the interrupts disabled
 */
#define MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL 4

/*
 * The size of range at which it becomes more economical to just flush the
 * whole cache rather than trying to flush the specified range.
 */
#define MN10300_DCACHE_FLUSH_BORDER \
    +(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)
#define MN10300_DCACHE_FLUSH_INV_BORDER \
    +(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)

#endif /* _ASM_PROC_CACHE_H */