ARM: Improve the L2 cache performance when PL310 is used
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / include / asm / outercache.h
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1/*
2 * arch/arm/include/asm/outercache.h
3 *
4 * Copyright (C) 2010 ARM Ltd.
5 * Written by Catalin Marinas <catalin.marinas@arm.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21#ifndef __ASM_OUTERCACHE_H
22#define __ASM_OUTERCACHE_H
23
24struct outer_cache_fns {
25 void (*inv_range)(unsigned long, unsigned long);
26 void (*clean_range)(unsigned long, unsigned long);
27 void (*flush_range)(unsigned long, unsigned long);
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28#ifdef CONFIG_OUTER_CACHE_SYNC
29 void (*sync)(void);
30#endif
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31};
32
33#ifdef CONFIG_OUTER_CACHE
34
35extern struct outer_cache_fns outer_cache;
36
37static inline void outer_inv_range(unsigned long start, unsigned long end)
38{
39 if (outer_cache.inv_range)
40 outer_cache.inv_range(start, end);
41}
42static inline void outer_clean_range(unsigned long start, unsigned long end)
43{
44 if (outer_cache.clean_range)
45 outer_cache.clean_range(start, end);
46}
47static inline void outer_flush_range(unsigned long start, unsigned long end)
48{
49 if (outer_cache.flush_range)
50 outer_cache.flush_range(start, end);
51}
52
53#else
54
55static inline void outer_inv_range(unsigned long start, unsigned long end)
56{ }
57static inline void outer_clean_range(unsigned long start, unsigned long end)
58{ }
59static inline void outer_flush_range(unsigned long start, unsigned long end)
60{ }
61
62#endif
63
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64#ifdef CONFIG_OUTER_CACHE_SYNC
65static inline void outer_sync(void)
66{
67 if (outer_cache.sync)
68 outer_cache.sync();
69}
70#else
71static inline void outer_sync(void)
72{ }
73#endif
74
33f663ff 75#endif /* __ASM_OUTERCACHE_H */