mach_mp_startup.c revision 982b91072930da051b05465dbd43c5ff024c96bc
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * CDDL HEADER START
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * The contents of this file are subject to the terms of the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Common Development and Distribution License (the "License").
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * You may not use this file except in compliance with the License.
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * or http://www.opensolaris.org/os/licensing.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * See the License for the specific language governing permissions
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * and limitations under the License.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * When distributing Covered Code, include this CDDL HEADER in each
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * If applicable, add the following below this CDDL HEADER, with the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * fields enclosed by brackets "[]" replaced with your own identifying
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * information: Portions Copyright [yyyy] [name of copyright owner]
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * CDDL HEADER END
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Use is subject to license terms.
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#pragma ident "%Z%%M% %I% %E% SMI"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/machsystm.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/cpu_module.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/dtrace.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/cpu_sgnblk_defs.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Useful for disabling MP bring-up for an MP capable kernel
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * (a kernel that was built with MP defined)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint use_mp = 1; /* set to come up mp */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Init CPU info - get CPU type info for processor_info system call.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinvoid
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chininit_cpu_info(struct cpu *cp)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin processor_info_t *pi = &cp->cpu_type_info;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int cpuid = cp->cpu_id;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin struct cpu_node *cpunode = &cpunodes[cpuid];
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin char buf[CPU_IDSTRLEN];
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cp->cpu_fpowner = NULL; /* not used for V9 */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Get clock-frequency property from cpunodes[] for the CPU.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin pi->pi_clock = (cpunode->clock_freq + 500000) / 1000000;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin (void) strcpy(pi->pi_processor_type, "sparcv9");
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin (void) strcpy(pi->pi_fputypes, "sparcv9");
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin (void) snprintf(buf, sizeof (buf),
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "%s (portid %d impl 0x%x ver 0x%x clock %d MHz)",
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cpunode->name, cpunode->portid,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cpunode->implementation, cpunode->version, pi->pi_clock);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cp->cpu_idstr = kmem_alloc(strlen(buf) + 1, KM_SLEEP);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin (void) strcpy(cp->cpu_idstr, buf);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cmn_err(CE_CONT, "?cpu%d: %s\n", cpuid, cp->cpu_idstr);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cp->cpu_brandstr = kmem_alloc(strlen(cpunode->name) + 1, KM_SLEEP);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin (void) strcpy(cp->cpu_brandstr, cpunode->name);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * StarFire requires the signature block stuff setup here
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin CPU_SGN_MAPIN(cpuid);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (cpuid == cpu0.cpu_id) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * cpu0 starts out running. Other cpus are
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * still in OBP land and we will leave them
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * alone for now.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin CPU_SIGNATURE(OS_SIG, SIGST_RUN, SIGSUBST_NULL, cpuid);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#ifdef lint
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cpuid = cpuid;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif /* lint */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Routine used to cleanup a CPU that has been powered off. This will
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * destroy all per-cpu information related to this cpu.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinmp_cpu_unconfigure(int cpuid)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int retval;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin void empty_cpu(int);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin extern int cleanup_cpu_common(int);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin ASSERT(MUTEX_HELD(&cpu_lock));
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin retval = cleanup_cpu_common(cpuid);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin empty_cpu(cpuid);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (retval);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinstruct mp_find_cpu_arg {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int cpuid; /* set by mp_cpu_configure() */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin dev_info_t *dip; /* set by mp_find_cpu() */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin};
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinmp_find_cpu(dev_info_t *dip, void *arg)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin extern int get_portid_ddi(dev_info_t *, dev_info_t **);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin struct mp_find_cpu_arg *target = (struct mp_find_cpu_arg *)arg;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin char *type;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int rv = DDI_WALK_CONTINUE;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int cpuid;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "device_type", &type))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (DDI_WALK_CONTINUE);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (strcmp(type, "cpu") != 0)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin goto out;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin DDI_PROP_DONTPASS, "cpuid", -1);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (cpuid == -1)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cpuid = get_portid_ddi(dip, NULL);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (cpuid != target->cpuid)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin goto out;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* Found it */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin rv = DDI_WALK_TERMINATE;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin target->dip = dip;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinout:
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin ddi_prop_free(type);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (rv);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Routine used to setup a newly inserted CPU in preparation for starting
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * it running code.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinmp_cpu_configure(int cpuid)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin extern void fill_cpu_ddi(dev_info_t *);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin extern int setup_cpu_common(int);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin struct mp_find_cpu_arg target;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin ASSERT(MUTEX_HELD(&cpu_lock));
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin target.dip = NULL;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin target.cpuid = cpuid;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin ddi_walk_devs(ddi_root_node(), mp_find_cpu, &target);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (target.dip == NULL)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (ENODEV);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Note: uses cpu_lock to protect cpunodes and ncpunodes
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * which will be modified inside of fill_cpu_ddi().
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin fill_cpu_ddi(target.dip);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * sun4v cpu setup may fail. sun4u assumes cpu setup to
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * be always successful, so the return value is ignored.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin (void) setup_cpu_common(cpuid);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin