linux - include/asm-sh/cache.h

53 lines · 1.3 KiB

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 <asm/cpu/cache.h>
13
14	#define SH_CACHE_VALID 1
15	#define SH_CACHE_UPDATED 2
16	#define SH_CACHE_COMBINED 4
17	#define SH_CACHE_ASSOC 8
18
19	#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
20	#define SMP_CACHE_BYTES L1_CACHE_BYTES
21
22	#define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
23
24	#ifndef __ASSEMBLY__
25	struct cache_info {
26	unsigned int ways; /* Number of cache ways */
27	unsigned int sets; /* Number of cache sets */
28	unsigned int linesz; /* Cache line size (bytes) */
29
30	unsigned int way_size; /* sets * line size */
31
32	/*
33	* way_incr is the address offset for accessing the next way
34	* in memory mapped cache array ops.
35	*/
36	unsigned int way_incr;
37	unsigned int entry_shift;
38	unsigned int entry_mask;
39
40	/*
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.
44	*/
45	unsigned int alias_mask;
46
47	unsigned int n_aliases; /* Number of aliases */
48
49	unsigned long flags;
50	};
51	#endif /* __ASSEMBLY__ */
52	#endif /* __KERNEL__ */
53	#endif /* __ASM_SH_CACHE_H */