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 <linux/init.h>
13 #include <asm/cpu/cache.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)
22 #define __read_mostly __attribute__((__section__(".data.read_mostly")))
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 int __init detect_cpu_and_cache_system(void);
54 #endif /* __ASSEMBLY__ */
55 #endif /* __KERNEL__ */
56 #endif /* __ASM_SH_CACHE_H */