1 /* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
3 * include/asm-sh/cache.h
5 * Copyright 1999 (C) Niibe Yutaka
6 * Copyright 2002, 2003 (C) Paul Mundt
8 #ifndef __ASM_SH_CACHE_H
9 #define __ASM_SH_CACHE_H
12 #include <asm/cpu/cache.h>
13 #include <asm/cpu/cacheflush.h>
15 #define SH_CACHE_VALID 1
16 #define SH_CACHE_UPDATED 2
17 #define SH_CACHE_COMBINED 4
18 #define SH_CACHE_ASSOC 8
20 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
21 #define SMP_CACHE_BYTES L1_CACHE_BYTES
23 #define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
26 unsigned int ways; /* Number of cache ways */
27 unsigned int sets; /* Number of cache sets */
28 unsigned int linesz; /* Cache line size (bytes) */
30 unsigned int way_size; /* sets * line size */
33 * way_incr is the address offset for accessing the next way
34 * in memory mapped cache array ops.
36 unsigned int way_incr;
37 unsigned int entry_shift;
38 unsigned int entry_mask;
41 * Compute a mask which selects the address bits which overlap between
42 * 1. those used to select the cache set during indexing
43 * 2. those in the physical page number.
45 unsigned int alias_mask;
47 unsigned int n_aliases; /* Number of aliases */
52 /* Flush (write-back only) a region (smaller than a page) */
53 extern void __flush_wback_region(void *start, int size);
54 /* Flush (write-back & invalidate) a region (smaller than a page) */
55 extern void __flush_purge_region(void *start, int size);
56 /* Flush (invalidate only) a region (smaller than a page) */
57 extern void __flush_invalidate_region(void *start, int size);
59 #endif /* __KERNEL__ */
60 #endif /* __ASM_SH_CACHE_H */