FreeBSD/Linux Kernel Cross Reference
sys/sparc64/sparc64/cache.c

     /*
      * Copyright (c) 1996
      *      The President and Fellows of Harvard College. All rights reserved.
      * Copyright (c) 1992, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * This software was developed by the Computer Systems Engineering group
      * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      * contributed to Berkeley.
     *
     * All advertising materials mentioning features or use of this software
     * must display the following acknowledgement:
     *      This product includes software developed by Harvard University.
     *      This product includes software developed by the University of
     *      California, Lawrence Berkeley Laboratory.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     *
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Aaron Brown and
     *      Harvard University.
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    /*-
     * Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
     * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     *      from: @(#)cache.c       8.2 (Berkeley) 10/30/93
     *      from: NetBSD: cache.c,v 1.5 2000/12/06 01:47:50 mrg Exp
     *
     * $FreeBSD: releng/5.2/sys/sparc64/sparc64/cache.c 122464 2003-11-11 06:41:54Z jake $
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    
    #include <dev/ofw/openfirm.h>
    
    #include <machine/cache.h>
    #include <machine/tlb.h>
    #include <machine/ver.h>
    
    struct cacheinfo cache;
    
    cache_enable_t *cache_enable;
    cache_flush_t *cache_flush;
    dcache_page_inval_t *dcache_page_inval;
    icache_page_inval_t *icache_page_inval;
    
    #define OF_GET(h, n, v) OF_getprop((h), (n), &(v), sizeof(v))
    
    /*
     * Fill in the cache parameters using the cpu node.
     */
    void
   cache_init(phandle_t node)
   {
           u_long set;
   
           if (OF_GET(node, "icache-size", cache.ic_size) == -1 ||
               OF_GET(node, "icache-line-size", cache.ic_linesize) == -1 ||
               OF_GET(node, "icache-associativity", cache.ic_assoc) == -1 ||
               OF_GET(node, "dcache-size", cache.dc_size) == -1 ||
               OF_GET(node, "dcache-line-size", cache.dc_linesize) == -1 ||
               OF_GET(node, "dcache-associativity", cache.dc_assoc) == -1 ||
               OF_GET(node, "ecache-size", cache.ec_size) == -1 ||
               OF_GET(node, "ecache-line-size", cache.ec_linesize) == -1 ||
               OF_GET(node, "ecache-associativity", cache.ec_assoc) == -1)
                   panic("cache_init: could not retrieve cache parameters");
   
           cache.ic_set = cache.ic_size / cache.ic_assoc;
           cache.ic_l2set = ffs(cache.ic_set) - 1;
           if ((cache.ic_set & ~(1UL << cache.ic_l2set)) != 0)
                   panic("cache_init: I$ set size not a power of 2");
           cache.dc_l2size = ffs(cache.dc_size) - 1;
           if ((cache.dc_size & ~(1UL << cache.dc_l2size)) != 0)
                   panic("cache_init: D$ size not a power of 2");
           if (((cache.dc_size / cache.dc_assoc) / PAGE_SIZE) != DCACHE_COLORS)
                   panic("cache_init: too many D$ colors");
           set = cache.ec_size / cache.ec_assoc;
           cache.ec_l2set = ffs(set) - 1;
           if ((set & ~(1UL << cache.ec_l2set)) != 0)
                   panic("cache_init: E$ set size not a power of 2");
   
           if (cpu_impl >= CPU_IMPL_ULTRASPARCIII) {
                   cache_enable = cheetah_cache_enable;
                   cache_flush = cheetah_cache_flush;
                   dcache_page_inval = cheetah_dcache_page_inval;
                   icache_page_inval = cheetah_icache_page_inval;
                   tlb_flush_user = cheetah_tlb_flush_user;
           } else {
                   cache_enable = spitfire_cache_enable;
                   cache_flush = spitfire_cache_flush;
                   dcache_page_inval = spitfire_dcache_page_inval;
                   icache_page_inval = spitfire_icache_page_inval;
                   tlb_flush_user = spitfire_tlb_flush_user;
           }
   }

Cache object: 4ca21f437a9e8b5af5bcc90b850f3413