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 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * from: @(#)cache.h 8.1 (Berkeley) 6/11/93 42 * from: NetBSD: cache.h,v 1.3 2000/08/01 00:28:02 eeh Exp 43 *
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44 * $FreeBSD: head/sys/sparc64/include/cache.h 97001 2002-05-20 16:30:47Z jake $
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44 * $FreeBSD: head/sys/sparc64/include/cache.h 112399 2003-03-19 06:55:37Z jake $ |
45 */ 46 47#ifndef _MACHINE_CACHE_H_ 48#define _MACHINE_CACHE_H_ 49
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50#include <vm/vm.h>
51#include <vm/pmap.h>
52
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50#include <dev/ofw/openfirm.h> 51
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55/*
56 * Cache diagnostic access definitions.
57 */
58/* ASI offsets for I$ diagnostic access */
59#define ICDA_SET_SHIFT 13
60#define ICDA_SET_MASK (1UL << ICDA_SET_SHIFT)
61#define ICDA_SET(a) (((a) << ICDA_SET_SHIFT) & ICDA_SET_MASK)
62/* I$ tag/valid format */
63#define ICDT_TAG_SHIFT 8
64#define ICDT_TAG_BITS 28
65#define ICDT_TAG_MASK (((1UL << ICDT_TAG_BITS) - 1) << ICDT_TAG_SHIFT)
66#define ICDT_TAG(x) (((x) & ICDT_TAG_MASK) >> ICDT_TAG_SHIFT)
67#define ICDT_VALID (1UL << 36)
68/* D$ tag/valid format */
69#define DCDT_TAG_SHIFT 2
70#define DCDT_TAG_BITS 28
71#define DCDT_TAG_MASK (((1UL << DCDT_TAG_BITS) - 1) << DCDT_TAG_SHIFT)
72#define DCDT_TAG(x) (((x) & DCDT_TAG_MASK) >> DCDT_TAG_SHIFT)
73#define DCDT_VALID_BITS 2
74#define DCDT_VALID_MASK ((1UL << DCDT_VALID_BITS) - 1)
75/* E$ ASI_ECACHE_W/ASI_ECACHE_R address flags */
76#define ECDA_DATA (1UL << 39)
77#define ECDA_TAG (1UL << 40)
78/* E$ tag/state/parity format */
79#define ECDT_TAG_BITS 13
80#define ECDT_TAG_SIZE (1UL << ECDT_TAG_BITS)
81#define ECDT_TAG_MASK (ECDT_TAG_SIZE - 1)
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52#define DCACHE_COLOR_BITS (1) 53#define DCACHE_COLORS (1 << DCACHE_COLOR_BITS) 54#define DCACHE_COLOR_MASK (DCACHE_COLORS - 1) 55#define DCACHE_COLOR(va) (((va) >> PAGE_SHIFT) & DCACHE_COLOR_MASK) 56#define DCACHE_OTHER_COLOR(color) \ 57 ((color) ^ DCACHE_COLOR_BITS) |
58
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83/*
84 * Do two virtual addresses (at which the same page is mapped) form and illegal
85 * alias in D$? XXX: should use cache.dc_size here.
86 */
87#define DCACHE_BOUNDARY 0x4000
88#define DCACHE_BMASK (DCACHE_BOUNDARY - 1)
89#define CACHE_BADALIAS(v1, v2) \
90 (((v1) & DCACHE_BMASK) != ((v2) & DCACHE_BMASK))
91
92/*
93 * Routines for dealing with the cache.
94 */
95void cache_init(phandle_t); /* turn it on */
96void icache_flush(vm_offset_t, vm_offset_t);
97void icache_inval_phys(vm_offset_t, vm_offset_t);
98void dcache_flush(vm_offset_t, vm_offset_t);
99void dcache_inval(pmap_t, vm_offset_t, vm_offset_t);
100void dcache_inval_phys(vm_offset_t, vm_offset_t);
101void dcache_blast(void);
102void ecache_flush(vm_offset_t, vm_offset_t);
103#if 0
104void ecache_inval_phys(vm_offset_t, vm_offset_t);
105#endif
106
107void dcache_page_inval(vm_offset_t pa);
108void icache_page_inval(vm_offset_t pa);
109
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59#define DC_TAG_SHIFT 2 60#define DC_VALID_SHIFT 0 61 62#define DC_TAG_BITS 28 63#define DC_VALID_BITS 2 64 65#define DC_TAG_MASK ((1 << DC_TAG_BITS) - 1) 66#define DC_VALID_MASK ((1 << DC_VALID_BITS) - 1) 67 68#define IC_TAG_SHIFT 7 69#define IC_VALID_SHIFT 36 70 71#define IC_TAG_BITS 28 72#define IC_VALID_BITS 1 73 74#define IC_TAG_MASK ((1 << IC_TAG_BITS) - 1) 75#define IC_VALID_MASK ((1 << IC_VALID_BITS) - 1) 76 77/* 78 * Cache control information. 79 */ 80struct cacheinfo { 81 u_int c_enabled; /* true => cache is enabled */ 82 u_int ic_size; /* instruction cache */ 83 u_int ic_set; 84 u_int ic_l2set; 85 u_int ic_assoc; 86 u_int ic_linesize; 87 u_int dc_size; /* data cache */ 88 u_int dc_l2size; 89 u_int dc_assoc; 90 u_int dc_linesize; 91 u_int ec_size; /* external cache info */ 92 u_int ec_assoc; 93 u_int ec_l2set; 94 u_int ec_linesize; 95 u_int ec_l2linesize; 96}; 97
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98typedef void dcache_page_inval_t(vm_offset_t pa); 99typedef void icache_page_inval_t(vm_offset_t pa); 100 101void cache_init(phandle_t node); 102 103void cheetah_dcache_page_inval(vm_offset_t pa); 104void cheetah_icache_page_inval(vm_offset_t pa); 105void spitfire_dcache_page_inval(vm_offset_t pa); 106void spitfire_icache_page_inval(vm_offset_t pa); 107 108extern dcache_page_inval_t *dcache_page_inval; 109extern icache_page_inval_t *icache_page_inval; 110 |
111extern struct cacheinfo cache; 112 113#endif /* !_MACHINE_CACHE_H_ */
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