/*-
* 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.
*
* 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.
* 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>.
* Copyright (c) 2008, 2010 Marius Strobl <marius@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
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/pcpu.h>
#include <dev/ofw/openfirm.h>
#include <machine/cache.h>
#include <machine/tlb.h>
#include <machine/ver.h>
cache_enable_t *cache_enable;
cache_flush_t *cache_flush;
dcache_page_inval_t *dcache_page_inval;
icache_page_inval_t *icache_page_inval;
u_int dcache_color_ignore;
#define OF_GET(h, n, v) OF_getprop((h), (n), &(v), sizeof(v))
static u_int cache_new_prop(u_int cpu_impl);
static u_int
cache_new_prop(u_int cpu_impl)
{
switch (cpu_impl) {
case CPU_IMPL_ULTRASPARCIV:
case CPU_IMPL_ULTRASPARCIVp:
return (1);
default:
return (0);
}
}
/*
* Fill in the cache parameters using the CPU node.
*/
void
cache_init(struct pcpu *pcpu)
{
u_long set;
u_int use_new_prop;
/*
* For CPUs which ignore TD_CV and support hardware unaliasing don't
* bother doing page coloring. This is equal across all CPUs.
*/
if (pcpu->pc_cpuid == 0 && pcpu->pc_impl == CPU_IMPL_SPARC64V)
dcache_color_ignore = 1;
use_new_prop = cache_new_prop(pcpu->pc_impl);
if (OF_GET(pcpu->pc_node, !use_new_prop ? "icache-size" :
"l1-icache-size", pcpu->pc_cache.ic_size) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "icache-line-size" :
"l1-icache-line-size", pcpu->pc_cache.ic_linesize) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "icache-associativity" :
"l1-icache-associativity", pcpu->pc_cache.ic_assoc) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "dcache-size" :
"l1-dcache-size", pcpu->pc_cache.dc_size) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "dcache-line-size" :
"l1-dcache-line-size", pcpu->pc_cache.dc_linesize) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "dcache-associativity" :
"l1-dcache-associativity", pcpu->pc_cache.dc_assoc) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "ecache-size" :
"l2-cache-size", pcpu->pc_cache.ec_size) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "ecache-line-size" :
"l2-cache-line-size", pcpu->pc_cache.ec_linesize) == -1 ||
OF_GET(pcpu->pc_node, !use_new_prop ? "ecache-associativity" :
"l2-cache-associativity", pcpu->pc_cache.ec_assoc) == -1)
OF_panic("%s: could not retrieve cache parameters", __func__);
set = pcpu->pc_cache.ic_size / pcpu->pc_cache.ic_assoc;
if ((set & ~(1UL << (ffs(set) - 1))) != 0)
OF_panic("%s: I$ set size not a power of 2", __func__);
if ((pcpu->pc_cache.dc_size &
~(1UL << (ffs(pcpu->pc_cache.dc_size) - 1))) != 0)
OF_panic("%s: D$ size not a power of 2", __func__);
/*
* For CPUs which don't support unaliasing in hardware ensure that
* the data cache doesn't have too many virtual colors.
*/
if (dcache_color_ignore == 0 && ((pcpu->pc_cache.dc_size /
pcpu->pc_cache.dc_assoc) / PAGE_SIZE) != DCACHE_COLORS)
OF_panic("%s: too many D$ colors", __func__);
set = pcpu->pc_cache.ec_size / pcpu->pc_cache.ec_assoc;
if ((set & ~(1UL << (ffs(set) - 1))) != 0)
OF_panic("%s: E$ set size not a power of 2", __func__);
if (pcpu->pc_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_nonlocked = cheetah_tlb_flush_nonlocked;
tlb_flush_user = cheetah_tlb_flush_user;
} else if (pcpu->pc_impl == CPU_IMPL_SPARC64V) {
cache_enable = zeus_cache_enable;
cache_flush = zeus_cache_flush;
dcache_page_inval = zeus_dcache_page_inval;
icache_page_inval = zeus_icache_page_inval;
tlb_flush_nonlocked = zeus_tlb_flush_nonlocked;
tlb_flush_user = zeus_tlb_flush_user;
} else if (pcpu->pc_impl >= CPU_IMPL_ULTRASPARCI &&
pcpu->pc_impl < CPU_IMPL_ULTRASPARCIII) {
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_nonlocked = spitfire_tlb_flush_nonlocked;
tlb_flush_user = spitfire_tlb_flush_user;
} else
OF_panic("%s: unknown CPU", __func__);
}
