chip.c revision 0eb822a1c0c2bea495647510b75f77f0e57633eb
/*
* 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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <limits.h>
#include <alloca.h>
#include <kstat.h>
#include <errno.h>
#include <libnvpair.h>
#include <sys/types.h>
#include <sys/bitmap.h>
#include <sys/processor.h>
#include <sys/param.h>
#include <sys/fm/protocol.h>
#include <sys/systeminfo.h>
#include <fm/topo_mod.h>
/*
* Enumerates the processing chips, or sockets, (as distinct from cores) in a
* system. For each chip found, the necessary nodes (one or more cores, and
* possibly a memory controller) are constructed underneath.
*/
#ifdef __cplusplus
extern "C" {
#endif
#define CHIP_VERSION TOPO_VERSION
#define CPU_NODE_NAME "cpu"
#define CHIP_NODE_NAME "chip"
typedef struct chip {
kstat_ctl_t *chip_kc;
kstat_t **chip_cpustats;
uint_t chip_ncpustats;
} chip_t;
static int chip_enum(topo_mod_t *, tnode_t *, const char *, topo_instance_t,
topo_instance_t, void *, void *);
static const topo_modops_t chip_ops =
{ chip_enum, NULL};
static const topo_modinfo_t chip_info =
{ "chip", FM_FMRI_SCHEME_HC, CHIP_VERSION, &chip_ops };
int
_topo_init(topo_mod_t *mod)
{
chip_t *chip;
if (getenv("TOPOCHIPDBG"))
topo_mod_setdebug(mod);
topo_mod_dprintf(mod, "initializing chip enumerator\n");
if ((chip = topo_mod_zalloc(mod, sizeof (chip_t))) == NULL)
return (-1);
if ((chip->chip_kc = kstat_open()) == NULL) {
topo_mod_dprintf(mod, "kstat_open failed: %s\n",
strerror(errno));
topo_mod_free(mod, chip, sizeof (chip_t));
return (-1);
}
chip->chip_ncpustats = sysconf(_SC_CPUID_MAX);
if ((chip->chip_cpustats = topo_mod_zalloc(mod, (
chip->chip_ncpustats + 1) * sizeof (kstat_t *))) == NULL) {
(void) kstat_close(chip->chip_kc);
topo_mod_free(mod, chip, sizeof (chip_t));
return (-1);
}
if (topo_mod_register(mod, &chip_info, TOPO_VERSION) != 0) {
topo_mod_dprintf(mod, "failed to register hc: "
"%s\n", topo_mod_errmsg(mod));
topo_mod_free(mod, chip->chip_cpustats,
(chip->chip_ncpustats + 1) * sizeof (kstat_t *));
(void) kstat_close(chip->chip_kc);
topo_mod_free(mod, chip, sizeof (chip_t));
return (-1);
}
topo_mod_setspecific(mod, (void *)chip);
return (0);
}
void
_topo_fini(topo_mod_t *mod)
{
chip_t *chip;
chip = topo_mod_getspecific(mod);
if (chip->chip_cpustats != NULL)
topo_mod_free(mod, chip->chip_cpustats,
(chip->chip_ncpustats + 1) * sizeof (kstat_t *));
(void) kstat_close(chip->chip_kc);
topo_mod_free(mod, chip, sizeof (chip_t));
topo_mod_unregister(mod);
}
static int
cpu_kstat_init(chip_t *chip, int i)
{
kstat_t *ksp;
if (chip->chip_cpustats[i] == NULL) {
if ((ksp = kstat_lookup(chip->chip_kc, "cpu_info", i, NULL)) ==
NULL || kstat_read(chip->chip_kc, ksp, NULL) < 0)
return (-1);
chip->chip_cpustats[i] = ksp;
} else {
ksp = chip->chip_cpustats[i];
}
return (ksp->ks_instance);
}
static nvlist_t *
cpu_fmri_create(topo_mod_t *mod, uint32_t cpuid, char *s, uint8_t cpumask)
{
int err;
nvlist_t *asru;
if (topo_mod_nvalloc(mod, &asru, NV_UNIQUE_NAME) != 0)
return (NULL);
err = nvlist_add_uint8(asru, FM_VERSION, FM_CPU_SCHEME_VERSION);
err |= nvlist_add_string(asru, FM_FMRI_SCHEME, FM_FMRI_SCHEME_CPU);
err |= nvlist_add_uint32(asru, FM_FMRI_CPU_ID, cpuid);
err |= nvlist_add_uint8(asru, FM_FMRI_CPU_MASK, cpumask);
if (s != NULL)
err |= nvlist_add_string(asru, FM_FMRI_CPU_SERIAL_ID, s);
if (err != 0) {
nvlist_free(asru);
(void) topo_mod_seterrno(mod, EMOD_FMRI_NVL);
return (NULL);
}
return (asru);
}
/*ARGSUSED*/
static int
cpu_create(topo_mod_t *mod, tnode_t *rnode, const char *name,
topo_instance_t min, topo_instance_t max, chip_t *chip)
{
int i, err, chip_id, nerr = 0;
char *s, sbuf[21];
tnode_t *cnode;
kstat_named_t *ks, *kf;
nvlist_t *fmri, *asru;
nvlist_t *auth = topo_mod_auth(mod, rnode);
/*
* Override what was created for us
*/
topo_node_range_destroy(rnode, name);
if (topo_node_range_create(mod, rnode, name, 0, chip->chip_ncpustats)
< 0)
return (topo_mod_seterrno(mod, EMOD_PARTIAL_ENUM));
for (i = 0; i <= chip->chip_ncpustats; i++) {
if ((chip_id = cpu_kstat_init(chip, i)) < 0)
continue;
if ((ks = kstat_data_lookup(chip->chip_cpustats[i],
"device_ID")) != NULL) {
(void) snprintf(sbuf, 21, "%llX", ks->value.ui64);
s = sbuf;
} else {
s = NULL;
}
fmri = topo_mod_hcfmri(mod, rnode, FM_HC_SCHEME_VERSION, name,
(topo_instance_t)chip_id, NULL, auth, NULL, NULL, s);
if (fmri == NULL || (cnode = topo_node_bind(mod,
rnode, name, i, fmri)) == NULL) {
++nerr;
nvlist_free(fmri);
continue;
}
nvlist_free(fmri);
if ((asru = cpu_fmri_create(mod, i, s, 0)) != NULL) {
(void) topo_node_asru_set(cnode, asru, 0, &err);
nvlist_free(asru);
} else {
++nerr;
}
/*
* We look for a cpu_fru kstat. If one is available and
* it contains something useful, use it as the label and
* and the FRU.
*
* This is a problem for platforms that do not properly
* support the cpu_fru kstat like Ontario or if
* we start exporting a different type of FRU label
*/
if ((kf = kstat_data_lookup(chip->chip_cpustats[i], "cpu_fru"))
!= NULL && strcmp(KSTAT_NAMED_STR_PTR(kf),
"hc:///component=") != 0) {
nvlist_t *fru;
char *lp;
if (topo_mod_str2nvl(mod, KSTAT_NAMED_STR_PTR(kf),
&fru) == 0) {
(void) topo_node_fru_set(cnode, fru, 0, &err);
nvlist_free(fru);
}
if ((lp = strchr(KSTAT_NAMED_STR_PTR(kf), '='))
== NULL) {
(void) topo_node_label_set(cnode, NULL, &err);
} else {
++lp;
(void) topo_node_label_set(cnode, lp, &err);
}
} else {
(void) topo_node_label_set(cnode, NULL, &err);
}
}
nvlist_free(auth);
if (nerr != 0)
return (topo_mod_seterrno(mod, EMOD_PARTIAL_ENUM));
else
return (0);
}
/*ARGSUSED*/
static int
chip_enum(topo_mod_t *mod, tnode_t *rnode, const char *name,
topo_instance_t min, topo_instance_t max, void *arg, void *notused)
{
chip_t *chip = (chip_t *)arg;
if (strcmp(name, CPU_NODE_NAME) == 0)
return (cpu_create(mod, rnode, name, min, max, chip));
return (0);
}