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87 lines
2.0 KiB
87 lines
2.0 KiB
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* Copyright (c) 1997, 1999 by Ralf Baechle |
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* Copyright (c) 1999 Silicon Graphics, Inc. |
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*/ |
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#ifndef _ASM_BCACHE_H |
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#define _ASM_BCACHE_H |
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#include <linux/types.h> |
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/* Some R4000 / R4400 / R4600 / R5000 machines may have a non-dma-coherent, |
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chipset implemented caches. On machines with other CPUs the CPU does the |
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cache thing itself. */ |
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struct bcache_ops { |
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void (*bc_enable)(void); |
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void (*bc_disable)(void); |
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void (*bc_wback_inv)(unsigned long page, unsigned long size); |
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void (*bc_inv)(unsigned long page, unsigned long size); |
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void (*bc_prefetch_enable)(void); |
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void (*bc_prefetch_disable)(void); |
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bool (*bc_prefetch_is_enabled)(void); |
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}; |
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extern void indy_sc_init(void); |
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#ifdef CONFIG_BOARD_SCACHE |
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extern struct bcache_ops *bcops; |
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static inline void bc_enable(void) |
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{ |
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bcops->bc_enable(); |
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} |
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static inline void bc_disable(void) |
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{ |
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bcops->bc_disable(); |
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} |
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static inline void bc_wback_inv(unsigned long page, unsigned long size) |
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{ |
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bcops->bc_wback_inv(page, size); |
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} |
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static inline void bc_inv(unsigned long page, unsigned long size) |
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{ |
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bcops->bc_inv(page, size); |
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} |
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static inline void bc_prefetch_enable(void) |
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{ |
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if (bcops->bc_prefetch_enable) |
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bcops->bc_prefetch_enable(); |
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} |
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static inline void bc_prefetch_disable(void) |
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{ |
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if (bcops->bc_prefetch_disable) |
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bcops->bc_prefetch_disable(); |
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} |
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static inline bool bc_prefetch_is_enabled(void) |
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{ |
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if (bcops->bc_prefetch_is_enabled) |
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return bcops->bc_prefetch_is_enabled(); |
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return false; |
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} |
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#else /* !defined(CONFIG_BOARD_SCACHE) */ |
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/* Not R4000 / R4400 / R4600 / R5000. */ |
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#define bc_enable() do { } while (0) |
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#define bc_disable() do { } while (0) |
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#define bc_wback_inv(page, size) do { } while (0) |
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#define bc_inv(page, size) do { } while (0) |
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#define bc_prefetch_enable() do { } while (0) |
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#define bc_prefetch_disable() do { } while (0) |
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#define bc_prefetch_is_enabled() 0 |
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#endif /* !defined(CONFIG_BOARD_SCACHE) */ |
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#endif /* _ASM_BCACHE_H */
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