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1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (c) 1997, 1999 by Ralf Baechle | |
7 | * Copyright (c) 1999 Silicon Graphics, Inc. | |
8 | */ | |
9 | #ifndef _ASM_BCACHE_H | |
10 | #define _ASM_BCACHE_H | |
11 | ||
37f2a174 | 12 | #include <linux/types.h> |
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13 | |
14 | /* Some R4000 / R4400 / R4600 / R5000 machines may have a non-dma-coherent, | |
70342287 | 15 | chipset implemented caches. On machines with other CPUs the CPU does the |
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16 | cache thing itself. */ |
17 | struct bcache_ops { | |
18 | void (*bc_enable)(void); | |
19 | void (*bc_disable)(void); | |
20 | void (*bc_wback_inv)(unsigned long page, unsigned long size); | |
21 | void (*bc_inv)(unsigned long page, unsigned long size); | |
37f2a174 PB |
22 | void (*bc_prefetch_enable)(void); |
23 | void (*bc_prefetch_disable)(void); | |
24 | bool (*bc_prefetch_is_enabled)(void); | |
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25 | }; |
26 | ||
27 | extern void indy_sc_init(void); | |
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28 | |
29 | #ifdef CONFIG_BOARD_SCACHE | |
30 | ||
31 | extern struct bcache_ops *bcops; | |
32 | ||
33 | static inline void bc_enable(void) | |
34 | { | |
35 | bcops->bc_enable(); | |
36 | } | |
37 | ||
38 | static inline void bc_disable(void) | |
39 | { | |
40 | bcops->bc_disable(); | |
41 | } | |
42 | ||
43 | static inline void bc_wback_inv(unsigned long page, unsigned long size) | |
44 | { | |
45 | bcops->bc_wback_inv(page, size); | |
46 | } | |
47 | ||
48 | static inline void bc_inv(unsigned long page, unsigned long size) | |
49 | { | |
50 | bcops->bc_inv(page, size); | |
51 | } | |
52 | ||
37f2a174 PB |
53 | static inline void bc_prefetch_enable(void) |
54 | { | |
55 | if (bcops->bc_prefetch_enable) | |
56 | bcops->bc_prefetch_enable(); | |
57 | } | |
58 | ||
59 | static inline void bc_prefetch_disable(void) | |
60 | { | |
61 | if (bcops->bc_prefetch_disable) | |
62 | bcops->bc_prefetch_disable(); | |
63 | } | |
64 | ||
65 | static inline bool bc_prefetch_is_enabled(void) | |
66 | { | |
67 | if (bcops->bc_prefetch_is_enabled) | |
68 | return bcops->bc_prefetch_is_enabled(); | |
69 | ||
70 | return false; | |
71 | } | |
72 | ||
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73 | #else /* !defined(CONFIG_BOARD_SCACHE) */ |
74 | ||
75 | /* Not R4000 / R4400 / R4600 / R5000. */ | |
76 | ||
77 | #define bc_enable() do { } while (0) | |
78 | #define bc_disable() do { } while (0) | |
79 | #define bc_wback_inv(page, size) do { } while (0) | |
80 | #define bc_inv(page, size) do { } while (0) | |
37f2a174 PB |
81 | #define bc_prefetch_enable() do { } while (0) |
82 | #define bc_prefetch_disable() do { } while (0) | |
83 | #define bc_prefetch_is_enabled() 0 | |
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84 | |
85 | #endif /* !defined(CONFIG_BOARD_SCACHE) */ | |
86 | ||
87 | #endif /* _ASM_BCACHE_H */ |