Viewing file:  bcache.h (1.48 KB) -rw-r--r--
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 1997, 1999 by Ralf Baechle
* Copyright (c) 1999 Silicon Graphics, Inc.
*/
#ifndef _ASM_BCACHE_H
#define _ASM_BCACHE_H
#include <linux/config.h>
#ifdef CONFIG_BOARD_SCACHE
/* Some R4000 / R4400 / R4600 / R5000 machines may have a non-dma-coherent,
chipset implemented caches. On machines with other CPUs the CPU does the
cache thing itself. */
struct bcache_ops {
void (*bc_enable)(void);
void (*bc_disable)(void);
void (*bc_wback_inv)(unsigned long page, unsigned long size);
void (*bc_inv)(unsigned long page, unsigned long size);
};
extern void indy_sc_init(void);
extern void sni_pcimt_sc_init(void);
extern struct bcache_ops *bcops;
extern inline void bc_enable(void)
{
bcops->bc_enable();
}
extern inline void bc_disable(void)
{
bcops->bc_disable();
}
extern inline void bc_wback_inv(unsigned long page, unsigned long size)
{
bcops->bc_wback_inv(page, size);
}
extern inline void bc_inv(unsigned long page, unsigned long size)
{
bcops->bc_inv(page, size);
}
#else /* !defined(CONFIG_BOARD_SCACHE) */
/* Not R4000 / R4400 / R4600 / R5000. */
#define bc_enable() do { } while (0)
#define bc_disable() do { } while (0)
#define bc_wback_inv(page, size) do { } while (0)
#define bc_inv(page, size) do { } while (0)
#endif /* !defined(CONFIG_BOARD_SCACHE) */
#endif /* _ASM_BCACHE_H */
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