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33f663ff CM |
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 | ||
ad6b9c9d WD |
24 | #include <linux/types.h> |
25 | ||
c6d1a2d0 TF |
26 | struct l2x0_regs; |
27 | ||
33f663ff CM |
28 | struct outer_cache_fns { |
29 | void (*inv_range)(unsigned long, unsigned long); | |
30 | void (*clean_range)(unsigned long, unsigned long); | |
31 | void (*flush_range)(unsigned long, unsigned long); | |
ae360a78 | 32 | void (*flush_all)(void); |
ae360a78 | 33 | void (*disable)(void); |
319f551a CM |
34 | #ifdef CONFIG_OUTER_CACHE_SYNC |
35 | void (*sync)(void); | |
36 | #endif | |
91c2ebb9 | 37 | void (*resume)(void); |
8abd259f RK |
38 | |
39 | /* This is an ARM L2C thing */ | |
8abd259f | 40 | void (*write_sec)(unsigned long, unsigned); |
c6d1a2d0 | 41 | void (*configure)(const struct l2x0_regs *); |
33f663ff CM |
42 | }; |
43 | ||
33f663ff CM |
44 | extern struct outer_cache_fns outer_cache; |
45 | ||
0b53c11d | 46 | #ifdef CONFIG_OUTER_CACHE |
bc4f94d8 RK |
47 | /** |
48 | * outer_inv_range - invalidate range of outer cache lines | |
49 | * @start: starting physical address, inclusive | |
50 | * @end: end physical address, exclusive | |
51 | */ | |
ad6b9c9d | 52 | static inline void outer_inv_range(phys_addr_t start, phys_addr_t end) |
33f663ff CM |
53 | { |
54 | if (outer_cache.inv_range) | |
55 | outer_cache.inv_range(start, end); | |
56 | } | |
bc4f94d8 RK |
57 | |
58 | /** | |
59 | * outer_clean_range - clean dirty outer cache lines | |
60 | * @start: starting physical address, inclusive | |
61 | * @end: end physical address, exclusive | |
62 | */ | |
ad6b9c9d | 63 | static inline void outer_clean_range(phys_addr_t start, phys_addr_t end) |
33f663ff CM |
64 | { |
65 | if (outer_cache.clean_range) | |
66 | outer_cache.clean_range(start, end); | |
67 | } | |
bc4f94d8 RK |
68 | |
69 | /** | |
70 | * outer_flush_range - clean and invalidate outer cache lines | |
71 | * @start: starting physical address, inclusive | |
72 | * @end: end physical address, exclusive | |
73 | */ | |
ad6b9c9d | 74 | static inline void outer_flush_range(phys_addr_t start, phys_addr_t end) |
33f663ff CM |
75 | { |
76 | if (outer_cache.flush_range) | |
77 | outer_cache.flush_range(start, end); | |
78 | } | |
79 | ||
bc4f94d8 RK |
80 | /** |
81 | * outer_flush_all - clean and invalidate all cache lines in the outer cache | |
82 | * | |
83 | * Note: depending on implementation, this may not be atomic - it must | |
84 | * only be called with interrupts disabled and no other active outer | |
85 | * cache masters. | |
86 | * | |
87 | * It is intended that this function is only used by implementations | |
88 | * needing to override the outer_cache.disable() method due to security. | |
89 | * (Some implementations perform this as a clean followed by an invalidate.) | |
90 | */ | |
ae360a78 TG |
91 | static inline void outer_flush_all(void) |
92 | { | |
93 | if (outer_cache.flush_all) | |
94 | outer_cache.flush_all(); | |
95 | } | |
96 | ||
bc4f94d8 RK |
97 | /** |
98 | * outer_disable - clean, invalidate and disable the outer cache | |
99 | * | |
100 | * Disable the outer cache, ensuring that any data contained in the outer | |
101 | * cache is pushed out to lower levels of system memory. The note and | |
102 | * conditions above concerning outer_flush_all() applies here. | |
103 | */ | |
1f1d5b74 | 104 | extern void outer_disable(void); |
ae360a78 | 105 | |
bc4f94d8 RK |
106 | /** |
107 | * outer_resume - restore the cache configuration and re-enable outer cache | |
108 | * | |
109 | * Restore any configuration that the cache had when previously enabled, | |
110 | * and re-enable the outer cache. | |
111 | */ | |
91c2ebb9 BS |
112 | static inline void outer_resume(void) |
113 | { | |
114 | if (outer_cache.resume) | |
115 | outer_cache.resume(); | |
116 | } | |
117 | ||
33f663ff CM |
118 | #else |
119 | ||
ad6b9c9d | 120 | static inline void outer_inv_range(phys_addr_t start, phys_addr_t end) |
33f663ff | 121 | { } |
ad6b9c9d | 122 | static inline void outer_clean_range(phys_addr_t start, phys_addr_t end) |
33f663ff | 123 | { } |
ad6b9c9d | 124 | static inline void outer_flush_range(phys_addr_t start, phys_addr_t end) |
33f663ff | 125 | { } |
ae360a78 | 126 | static inline void outer_flush_all(void) { } |
ae360a78 | 127 | static inline void outer_disable(void) { } |
4e79a62d | 128 | static inline void outer_resume(void) { } |
33f663ff CM |
129 | |
130 | #endif | |
131 | ||
132 | #endif /* __ASM_OUTERCACHE_H */ |