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