1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
3 *
4 * include/asm-sh/cache.h
5 *
6 * Copyright 1999 (C) Niibe Yutaka
7 * Copyright 2002, 2003 (C) Paul Mundt
8 */
9 #ifndef __ASM_SH_CACHE_H
10 #define __ASM_SH_CACHE_H
11 #ifdef __KERNEL__
12
13 #include <linux/init.h>
14 #include <cpu/cache.h>
15
16 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
17
18 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
19
20 #ifndef __ASSEMBLY__
21 struct cache_info {
22 unsigned int ways; /* Number of cache ways */
23 unsigned int sets; /* Number of cache sets */
24 unsigned int linesz; /* Cache line size (bytes) */
25
26 unsigned int way_size; /* sets * line size */
27
28 /*
29 * way_incr is the address offset for accessing the next way
30 * in memory mapped cache array ops.
31 */
32 unsigned int way_incr;
33 unsigned int entry_shift;
34 unsigned int entry_mask;
35
36 /*
37 * Compute a mask which selects the address bits which overlap between
38 * 1. those used to select the cache set during indexing
39 * 2. those in the physical page number.
40 */
41 unsigned int alias_mask;
42 unsigned int n_aliases; /* Number of aliases */
43
44 unsigned long flags;
45 };
46 #endif /* __ASSEMBLY__ */
47 #endif /* __KERNEL__ */
48 #endif /* __ASM_SH_CACHE_H */