2fcbca0d85
license, per letter dated July 22, 1999 and email from Peter Wemm, Alan Cox and Robert Watson. Approved by: core, peter, alc, rwatson
139 lines
5.8 KiB
C
139 lines
5.8 KiB
C
/*
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* Copyright (c) 1996
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* The President and Fellows of Harvard College. All rights reserved.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Harvard University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Aaron Brown and
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* Harvard University.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: @(#)cache.c 8.2 (Berkeley) 10/30/93
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* from: NetBSD: cache.c,v 1.5 2000/12/06 01:47:50 mrg Exp
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/cache.h>
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#include <machine/tlb.h>
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#include <machine/ver.h>
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struct cacheinfo cache;
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cache_enable_t *cache_enable;
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cache_flush_t *cache_flush;
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dcache_page_inval_t *dcache_page_inval;
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icache_page_inval_t *icache_page_inval;
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#define OF_GET(h, n, v) OF_getprop((h), (n), &(v), sizeof(v))
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/*
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* Fill in the cache parameters using the cpu node.
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*/
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void
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cache_init(phandle_t node)
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{
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u_long set;
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if (OF_GET(node, "icache-size", cache.ic_size) == -1 ||
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OF_GET(node, "icache-line-size", cache.ic_linesize) == -1 ||
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OF_GET(node, "icache-associativity", cache.ic_assoc) == -1 ||
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OF_GET(node, "dcache-size", cache.dc_size) == -1 ||
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OF_GET(node, "dcache-line-size", cache.dc_linesize) == -1 ||
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OF_GET(node, "dcache-associativity", cache.dc_assoc) == -1 ||
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OF_GET(node, "ecache-size", cache.ec_size) == -1 ||
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OF_GET(node, "ecache-line-size", cache.ec_linesize) == -1 ||
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OF_GET(node, "ecache-associativity", cache.ec_assoc) == -1)
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panic("cache_init: could not retrieve cache parameters");
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cache.ic_set = cache.ic_size / cache.ic_assoc;
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cache.ic_l2set = ffs(cache.ic_set) - 1;
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if ((cache.ic_set & ~(1UL << cache.ic_l2set)) != 0)
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panic("cache_init: I$ set size not a power of 2");
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cache.dc_l2size = ffs(cache.dc_size) - 1;
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if ((cache.dc_size & ~(1UL << cache.dc_l2size)) != 0)
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panic("cache_init: D$ size not a power of 2");
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if (((cache.dc_size / cache.dc_assoc) / PAGE_SIZE) != DCACHE_COLORS)
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panic("cache_init: too many D$ colors");
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set = cache.ec_size / cache.ec_assoc;
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cache.ec_l2set = ffs(set) - 1;
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if ((set & ~(1UL << cache.ec_l2set)) != 0)
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panic("cache_init: E$ set size not a power of 2");
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if (cpu_impl >= CPU_IMPL_ULTRASPARCIII) {
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cache_enable = cheetah_cache_enable;
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cache_flush = cheetah_cache_flush;
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dcache_page_inval = cheetah_dcache_page_inval;
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icache_page_inval = cheetah_icache_page_inval;
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tlb_flush_user = cheetah_tlb_flush_user;
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} else {
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cache_enable = spitfire_cache_enable;
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cache_flush = spitfire_cache_flush;
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dcache_page_inval = spitfire_dcache_page_inval;
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icache_page_inval = spitfire_icache_page_inval;
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tlb_flush_user = spitfire_tlb_flush_user;
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}
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}
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