44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
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/* MN103E010 Cache specification
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_PROC_CACHE_H
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#define _ASM_PROC_CACHE_H
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/* L1 cache */
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#define L1_CACHE_NWAYS 4 /* number of ways in caches */
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#define L1_CACHE_NENTRIES 256 /* number of entries in each way */
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#define L1_CACHE_BYTES 16 /* bytes per entry */
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#define L1_CACHE_SHIFT 4 /* shift for bytes per entry */
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#define L1_CACHE_WAYDISP 0x1000 /* displacement of one way from the next */
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#define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */
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#define L1_CACHE_TAG_DIRTY 0x00000008 /* data cache tag dirty bit */
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#define L1_CACHE_TAG_ENTRY 0x00000ff0 /* cache tag entry address mask */
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#define L1_CACHE_TAG_ADDRESS 0xfffff000 /* cache tag line address mask */
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#define L1_CACHE_TAG_MASK +(L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY)
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/*
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* specification of the interval between interrupt checking intervals whilst
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* managing the cache with the interrupts disabled
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*/
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#define MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL 4
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/*
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* The size of range at which it becomes more economical to just flush the
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* whole cache rather than trying to flush the specified range.
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*/
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#define MN10300_DCACHE_FLUSH_BORDER \
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+(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)
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#define MN10300_DCACHE_FLUSH_INV_BORDER \
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+(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)
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#endif /* _ASM_PROC_CACHE_H */
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