| 1 | |
| 2 | * This file is subject to the terms and conditions of the GNU General Public
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| 3 | * License. See the file "COPYING" in the main directory of this archive
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| 4 | * for more details.
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| 5 | *
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| 6 | * Copyright (c) 1997, 1999 by Ralf Baechle
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| 7 | * Copyright (c) 1999 Silicon Graphics, Inc.
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| 8 |
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| 9 | #ifndef _ASM_BCACHE_H
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| 10 | #define _ASM_BCACHE_H
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| 11 |
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| 12 | #include <linux/types.h>
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| 13 |
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| 14 | |
| 15 | chipset implemented caches. On machines with other CPUs the CPU does the
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| 16 | cache thing itself.
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| 17 | struct bcache_ops {
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| 18 | void (*bc_enable)(void);
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| 19 | void (*bc_disable)(void);
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| 20 | void (*bc_wback_inv)(unsigned long page, unsigned long size);
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| 21 | void (*bc_inv)(unsigned long page, unsigned long size);
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| 22 | void (*bc_prefetch_enable)(void);
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| 23 | void (*bc_prefetch_disable)(void);
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| 24 | bool (*bc_prefetch_is_enabled)(void);
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| 25 | };
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| 26 |
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| 27 | extern void indy_sc_init(void);
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| 28 |
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| 29 | #ifdef CONFIG_BOARD_SCACHE
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| 30 |
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| 31 | extern struct bcache_ops *bcops;
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| 32 |
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| 33 | static inline void bc_enable(void)
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| 34 | {
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| 35 | bcops->bc_enable();
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| 36 | }
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| 37 |
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| 38 | static inline void bc_disable(void)
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| 39 | {
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| 40 | bcops->bc_disable();
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| 41 | }
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| 42 |
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| 43 | static inline void bc_wback_inv(unsigned long page, unsigned long size)
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| 44 | {
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| 45 | bcops->bc_wback_inv(page, size);
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| 46 | }
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| 47 |
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| 48 | static inline void bc_inv(unsigned long page, unsigned long size)
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| 49 | {
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| 50 | bcops->bc_inv(page, size);
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| 51 | }
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| 52 |
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| 53 | static inline void bc_prefetch_enable(void)
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| 54 | {
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| 55 | if (bcops->bc_prefetch_enable)
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| 56 | bcops->bc_prefetch_enable();
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| 57 | }
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| 58 |
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| 59 | static inline void bc_prefetch_disable(void)
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| 60 | {
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| 61 | if (bcops->bc_prefetch_disable)
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| 62 | bcops->bc_prefetch_disable();
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| 63 | }
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| 64 |
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| 65 | static inline bool bc_prefetch_is_enabled(void)
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| 66 | {
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| 67 | if (bcops->bc_prefetch_is_enabled)
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| 68 | return bcops->bc_prefetch_is_enabled();
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| 69 |
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| 70 | return false;
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| 71 | }
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| 72 |
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| 73 | #else
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| 74 |
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| 75 |
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| 76 |
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| 77 | #define bc_enable() do { } while (0)
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| 78 | #define bc_disable() do { } while (0)
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| 79 | #define bc_wback_inv(page, size) do { } while (0)
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| 80 | #define bc_inv(page, size) do { } while (0)
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| 81 | #define bc_prefetch_enable() do { } while (0)
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| 82 | #define bc_prefetch_disable() do { } while (0)
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| 83 | #define bc_prefetch_is_enabled() 0
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| 84 |
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| 85 | #endif
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| 86 |
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| 87 | #endif
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