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 
12 #include <linux/init.h>
13 #include <cpu/cache.h>
14 
15 #define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
16 
17 #define __read_mostly __section(".data..read_mostly")
18 
19 #ifndef __ASSEMBLY__
20 struct cache_info {
21 	unsigned int ways;		/* Number of cache ways */
22 	unsigned int sets;		/* Number of cache sets */
23 	unsigned int linesz;		/* Cache line size (bytes) */
24 
25 	unsigned int way_size;		/* sets * line size */
26 
27 	/*
28 	 * way_incr is the address offset for accessing the next way
29 	 * in memory mapped cache array ops.
30 	 */
31 	unsigned int way_incr;
32 	unsigned int entry_shift;
33 	unsigned int entry_mask;
34 
35 	/*
36 	 * Compute a mask which selects the address bits which overlap between
37 	 * 1. those used to select the cache set during indexing
38 	 * 2. those in the physical page number.
39 	 */
40 	unsigned int alias_mask;
41 	unsigned int n_aliases;		/* Number of aliases */
42 
43 	unsigned long flags;
44 };
45 #endif /* __ASSEMBLY__ */
46 #endif /* __ASM_SH_CACHE_H */
47