Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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#include <asm/cpu/cacheflush.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#define L1_CACHE_SHIFT_MAX 5 /* largest L1 which this arch supports */
26
27struct cache_info {
28 unsigned int ways;
29 unsigned int sets;
30 unsigned int linesz;
31
32 unsigned int way_incr;
33
34 unsigned int entry_shift;
35 unsigned int entry_mask;
36
37 unsigned long flags;
38};
39
40/* Flush (write-back only) a region (smaller than a page) */
41extern void __flush_wback_region(void *start, int size);
42/* Flush (write-back & invalidate) a region (smaller than a page) */
43extern void __flush_purge_region(void *start, int size);
44/* Flush (invalidate only) a region (smaller than a page) */
45extern void __flush_invalidate_region(void *start, int size);
46
47#endif /* __KERNEL__ */
48#endif /* __ASM_SH_CACHE_H */