arch/mn10300/proc-mn103e010/include/proc/cache.h

   1 /* MN103E010 Cache specification
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11 #ifndef _ASM_PROC_CACHE_H
  12 #define _ASM_PROC_CACHE_H
  13
  14 /* L1 cache */
  15
  16 #define L1_CACHE_NWAYS          4       /* number of ways in caches */
  17 #define L1_CACHE_NENTRIES       256     /* number of entries in each way */
  18 #define L1_CACHE_BYTES          16      /* bytes per entry */
  19 #define L1_CACHE_SHIFT          4       /* shift for bytes per entry */
  20 #define L1_CACHE_WAYDISP        0x1000  /* displacement of one way from the next */
  21
  22 #define L1_CACHE_TAG_VALID      0x00000001      /* cache tag valid bit */
  23 #define L1_CACHE_TAG_DIRTY      0x00000008      /* data cache tag dirty bit */
  24 #define L1_CACHE_TAG_ENTRY      0x00000ff0      /* cache tag entry address mask */
  25 #define L1_CACHE_TAG_ADDRESS    0xfffff000      /* cache tag line address mask */
  26 #define L1_CACHE_TAG_MASK       +(L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY)
  27
  28 /*
  29  * specification of the interval between interrupt checking intervals whilst
  30  * managing the cache with the interrupts disabled
  31  */
  32 #define MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL     4
  33
  34 /*
  35  * The size of range at which it becomes more economical to just flush the
  36  * whole cache rather than trying to flush the specified range.
  37  */
  38 #define MN10300_DCACHE_FLUSH_BORDER     \
  39         +(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)
  40 #define MN10300_DCACHE_FLUSH_INV_BORDER \
  41         +(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)
  42
  43 #endif /* _ASM_PROC_CACHE_H */