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1da177e4 LT |
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 | ||
12 | #include <linux/config.h> | |
13 | ||
14 | /* Some R4000 / R4400 / R4600 / R5000 machines may have a non-dma-coherent, | |
15 | chipset implemented caches. On machines with other CPUs the CPU does the | |
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); | |
22 | }; | |
23 | ||
24 | extern void indy_sc_init(void); | |
25 | extern void sni_pcimt_sc_init(void); | |
26 | ||
27 | #ifdef CONFIG_BOARD_SCACHE | |
28 | ||
29 | extern struct bcache_ops *bcops; | |
30 | ||
31 | static inline void bc_enable(void) | |
32 | { | |
33 | bcops->bc_enable(); | |
34 | } | |
35 | ||
36 | static inline void bc_disable(void) | |
37 | { | |
38 | bcops->bc_disable(); | |
39 | } | |
40 | ||
41 | static inline void bc_wback_inv(unsigned long page, unsigned long size) | |
42 | { | |
43 | bcops->bc_wback_inv(page, size); | |
44 | } | |
45 | ||
46 | static inline void bc_inv(unsigned long page, unsigned long size) | |
47 | { | |
48 | bcops->bc_inv(page, size); | |
49 | } | |
50 | ||
51 | #else /* !defined(CONFIG_BOARD_SCACHE) */ | |
52 | ||
53 | /* Not R4000 / R4400 / R4600 / R5000. */ | |
54 | ||
55 | #define bc_enable() do { } while (0) | |
56 | #define bc_disable() do { } while (0) | |
57 | #define bc_wback_inv(page, size) do { } while (0) | |
58 | #define bc_inv(page, size) do { } while (0) | |
59 | ||
60 | #endif /* !defined(CONFIG_BOARD_SCACHE) */ | |
61 | ||
62 | #endif /* _ASM_BCACHE_H */ |