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
13/* Some R4000 / R4400 / R4600 / R5000 machines may have a non-dma-coherent,
14   chipset implemented caches.  On machines with other CPUs the CPU does the
15   cache thing itself. */
16struct bcache_ops {
17	void (*bc_enable)(void);
18	void (*bc_disable)(void);
19	void (*bc_wback_inv)(unsigned long page, unsigned long size);
20	void (*bc_inv)(unsigned long page, unsigned long size);
21};
22
23extern void indy_sc_init(void);
24extern void sni_pcimt_sc_init(void);
25
26#ifdef CONFIG_BOARD_SCACHE
27
28extern struct bcache_ops *bcops;
29
30static inline void bc_enable(void)
31{
32	bcops->bc_enable();
33}
34
35static inline void bc_disable(void)
36{
37	bcops->bc_disable();
38}
39
40static inline void bc_wback_inv(unsigned long page, unsigned long size)
41{
42	bcops->bc_wback_inv(page, size);
43}
44
45static inline void bc_inv(unsigned long page, unsigned long size)
46{
47	bcops->bc_inv(page, size);
48}
49
50#else /* !defined(CONFIG_BOARD_SCACHE) */
51
52/* Not R4000 / R4400 / R4600 / R5000.  */
53
54#define bc_enable() do { } while (0)
55#define bc_disable() do { } while (0)
56#define bc_wback_inv(page, size) do { } while (0)
57#define bc_inv(page, size) do { } while (0)
58
59#endif /* !defined(CONFIG_BOARD_SCACHE) */
60
61#endif /* _ASM_BCACHE_H */
62