1/*-
2 * Copyright (c) 1996
3 *	The President and Fellows of Harvard College. All rights reserved.
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by Aaron Brown and
22 *	Harvard University.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 *	from: @(#)cache.h	8.1 (Berkeley) 6/11/93
40 *	from: NetBSD: cache.h,v 1.3 2000/08/01 00:28:02 eeh Exp
41 *
42 * $FreeBSD$
43 */
44
45#ifndef _MACHINE_CACHE_H_
46#define	_MACHINE_CACHE_H_
47
48#define	DCACHE_COLOR_BITS	(1)
49#define	DCACHE_COLORS		(1 << DCACHE_COLOR_BITS)
50#define	DCACHE_COLOR_MASK	(DCACHE_COLORS - 1)
51#define	DCACHE_COLOR(va)	(((va) >> PAGE_SHIFT) & DCACHE_COLOR_MASK)
52#define	DCACHE_OTHER_COLOR(color)					\
53	((color) ^ DCACHE_COLOR_BITS)
54
55#define	DC_TAG_SHIFT	2
56#define	DC_VALID_SHIFT	0
57
58#define	DC_TAG_BITS	28
59#define	DC_VALID_BITS	2
60
61#define	DC_TAG_MASK	((1 << DC_TAG_BITS) - 1)
62#define	DC_VALID_MASK	((1 << DC_VALID_BITS) - 1)
63
64#define	IC_TAG_SHIFT	7
65#define	IC_VALID_SHIFT	36
66
67#define	IC_TAG_BITS	28
68#define	IC_VALID_BITS	1
69
70#define	IC_TAG_MASK	((1 << IC_TAG_BITS) - 1)
71#define	IC_VALID_MASK	((1 << IC_VALID_BITS) - 1)
72
73#ifndef LOCORE
74
75/*
76 * Cache control information
77 */
78struct cacheinfo {
79	u_int	ic_size;		/* instruction cache */
80	u_int	ic_assoc;
81	u_int	ic_linesize;
82	u_int	dc_size;		/* data cache */
83	u_int	dc_assoc;
84	u_int	dc_linesize;
85	u_int	ec_size;		/* external cache info */
86	u_int	ec_assoc;
87	u_int	ec_linesize;
88};
89
90#ifdef _KERNEL
91
92extern u_int dcache_color_ignore;
93
94struct pcpu;
95
96typedef void cache_enable_t(u_int cpu_impl);
97typedef void cache_flush_t(void);
98typedef void dcache_page_inval_t(vm_paddr_t pa);
99typedef void icache_page_inval_t(vm_paddr_t pa);
100
101void cache_init(struct pcpu *pcpu);
102
103cache_enable_t cheetah_cache_enable;
104cache_flush_t cheetah_cache_flush;
105dcache_page_inval_t cheetah_dcache_page_inval;
106icache_page_inval_t cheetah_icache_page_inval;
107
108cache_enable_t spitfire_cache_enable;
109cache_flush_t spitfire_cache_flush;
110dcache_page_inval_t spitfire_dcache_page_inval;
111icache_page_inval_t spitfire_icache_page_inval;
112
113cache_enable_t zeus_cache_enable;
114cache_flush_t zeus_cache_flush;
115dcache_page_inval_t zeus_dcache_page_inval;
116icache_page_inval_t zeus_icache_page_inval;
117
118extern cache_enable_t *cache_enable;
119extern cache_flush_t *cache_flush;
120extern dcache_page_inval_t *dcache_page_inval;
121extern icache_page_inval_t *icache_page_inval;
122
123#endif /* KERNEL */
124
125#endif /* !LOCORE */
126
127#endif /* !_MACHINE_CACHE_H_ */
128