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1/* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
2 *
3 * include/asm-sh/cache.h
4 *
5 * Copyright 1999 (C) Niibe Yutaka
6 * Copyright 2002, 2003 (C) Paul Mundt
7 */
8#ifndef __ASM_SH_CACHE_H
9#define __ASM_SH_CACHE_H
10#ifdef __KERNEL__
11
12#include <linux/init.h>
13#include <asm/cpu/cache.h>
14
15#define SH_CACHE_VALID 1
16#define SH_CACHE_UPDATED 2
17#define SH_CACHE_COMBINED 4
18#define SH_CACHE_ASSOC 8
19
20#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
21#define SMP_CACHE_BYTES L1_CACHE_BYTES
22
23#define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
24
25#ifndef __ASSEMBLY__
26struct cache_info {
27 unsigned int ways; /* Number of cache ways */
28 unsigned int sets; /* Number of cache sets */
29 unsigned int linesz; /* Cache line size (bytes) */
30
31 unsigned int way_size; /* sets * line size */
32
33 /*
34 * way_incr is the address offset for accessing the next way
35 * in memory mapped cache array ops.
36 */
37 unsigned int way_incr;
38 unsigned int entry_shift;
39 unsigned int entry_mask;
40
41 /*
42 * Compute a mask which selects the address bits which overlap between
43 * 1. those used to select the cache set during indexing
44 * 2. those in the physical page number.
45 */
46 unsigned int alias_mask;
47
48 unsigned int n_aliases; /* Number of aliases */
49
50 unsigned long flags;
51};
52
53int __init detect_cpu_and_cache_system(void);
54
55#endif /* __ASSEMBLY__ */
56#endif /* __KERNEL__ */
57#endif /* __ASM_SH_CACHE_H */