cpu.c revision 6dfee4834394825da35b977ca71cdc965bc7b6a4
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/processor.h>
#include <fm/fmd_fmri.h>
#include <string.h>
#include <strings.h>
#include <errno.h>
#include <kstat.h>
#ifdef sparc
#include <sys/mdesc.h>
#include <cpu.h>
#endif /* sparc */
/*
* The scheme plugin for cpu FMRIs.
*/
#ifdef sparc
#define ONTARIO_PLAT_NAME "SUNW,Sun-Fire-T200"
#define ERIE_PLAT_NAME "SUNW,Sun-Fire-T1000"
cpu_t cpu;
#endif /* sparc */
ssize_t
fmd_fmri_nvl2str(nvlist_t *nvl, char *buf, size_t buflen)
{
uint8_t version;
uint32_t cpuid;
uint64_t serialid;
if (nvlist_lookup_uint8(nvl, FM_VERSION, &version) != 0 ||
version > FM_CPU_SCHEME_VERSION ||
nvlist_lookup_uint32(nvl, FM_FMRI_CPU_ID, &cpuid) != 0 ||
nvlist_lookup_uint64(nvl, FM_FMRI_CPU_SERIAL_ID, &serialid) != 0)
return (fmd_fmri_set_errno(EINVAL));
return (snprintf(buf, buflen, "cpu:///%s=%u/%s=%llX", FM_FMRI_CPU_ID,
cpuid, FM_FMRI_CPU_SERIAL_ID, (u_longlong_t)serialid));
}
static int
cpu_get_serialid_kstat(uint32_t cpuid, uint64_t *serialidp)
{
kstat_named_t *kn;
kstat_ctl_t *kc;
kstat_t *ksp;
int i;
if ((kc = kstat_open()) == NULL) /* XXX commonify */
return (-1); /* errno is set for us */
if ((ksp = kstat_lookup(kc, "cpu_info", cpuid, NULL)) == NULL) {
(void) kstat_close(kc);
return (fmd_fmri_set_errno(ENOENT));
}
if (kstat_read(kc, ksp, NULL) == -1) {
int oserr = errno;
(void) kstat_close(kc);
return (fmd_fmri_set_errno(oserr));
}
for (kn = ksp->ks_data, i = 0; i < ksp->ks_ndata; i++, kn++) {
if (strcmp(kn->name, "device_ID") == 0) {
*serialidp = kn->value.ui64;
(void) kstat_close(kc);
return (0);
}
}
(void) kstat_close(kc);
return (fmd_fmri_set_errno(ENOENT));
}
static int
cpu_get_serialid(uint32_t cpuid, uint64_t *serialidp)
{
#ifdef sparc
if (cpu.cpu_mdesc_cpus != NULL)
return (cpu_get_serialid_mdesc(cpuid, serialidp));
else
#endif /* sparc */
return (cpu_get_serialid_kstat(cpuid, serialidp));
}
#ifdef sparc
static int
cpu_phys2virt(uint32_t cpuid, uint32_t *cpuvidp)
{
md_cpumap_t *mcmp;
int idx;
if (cpu.cpu_mdesc_cpus == NULL)
return (ENOENT);
for (idx = 0, mcmp = cpu.cpu_mdesc_cpus;
idx < cpu.cpu_mdesc_ncpus; idx++, mcmp++) {
if (mcmp->cpumap_pid == (uint64_t)-1)
continue; /* ignore invalid value */
if (mcmp->cpumap_pid == cpuid) {
*cpuvidp = mcmp->cpumap_id;
return (0);
}
}
return (ENOENT);
}
#endif /* sparc */
int
fmd_fmri_expand(nvlist_t *nvl)
{
uint8_t version;
uint32_t cpuid;
uint64_t serialid;
int rc;
if (nvlist_lookup_uint8(nvl, FM_VERSION, &version) != 0 ||
version > FM_CPU_SCHEME_VERSION ||
nvlist_lookup_uint32(nvl, FM_FMRI_CPU_ID, &cpuid) != 0)
return (fmd_fmri_set_errno(EINVAL));
if ((rc = nvlist_lookup_uint64(nvl, FM_FMRI_CPU_SERIAL_ID,
&serialid)) != 0) {
if (rc != ENOENT)
return (fmd_fmri_set_errno(rc));
if (cpu_get_serialid(cpuid, &serialid) != 0)
return (-1); /* errno is set for us */
if ((rc = nvlist_add_uint64(nvl, FM_FMRI_CPU_SERIAL_ID,
serialid)) != 0)
return (fmd_fmri_set_errno(rc));
}
#ifdef sparc
{
uint32_t cpuvid;
const char *platform = fmd_fmri_get_platform();
if (strcmp(platform, ONTARIO_PLAT_NAME) == 0 ||
strcmp(platform, ERIE_PLAT_NAME) == 0) {
if (cpu_phys2virt(cpuid, &cpuvid) != 0)
return (fmd_fmri_set_errno(ENOENT));
(void) nvlist_remove_all(nvl, FM_FMRI_CPU_VID);
if ((rc = nvlist_add_uint32(nvl, FM_FMRI_CPU_VID,
cpuvid)) != 0)
return (fmd_fmri_set_errno(rc));
}
}
#endif /* sparc */
return (0);
}
int
fmd_fmri_present(nvlist_t *nvl)
{
uint8_t version;
uint32_t cpuid;
uint64_t nvlserid, curserid;
if (nvlist_lookup_uint8(nvl, FM_VERSION, &version) != 0 ||
version > FM_CPU_SCHEME_VERSION ||
nvlist_lookup_uint32(nvl, FM_FMRI_CPU_ID, &cpuid) != 0 ||
nvlist_lookup_uint64(nvl, FM_FMRI_CPU_SERIAL_ID, &nvlserid) != 0)
return (fmd_fmri_set_errno(EINVAL));
if (cpu_get_serialid(cpuid, &curserid) != 0)
return (errno == ENOENT ? 0 : -1);
return (curserid == nvlserid);
}
int
fmd_fmri_unusable(nvlist_t *nvl)
{
uint8_t version;
uint32_t cpuid;
if (nvlist_lookup_uint8(nvl, FM_VERSION, &version) != 0 ||
version > FM_CPU_SCHEME_VERSION ||
nvlist_lookup_uint32(nvl, FM_FMRI_CPU_ID, &cpuid) != 0)
return (fmd_fmri_set_errno(EINVAL));
#ifdef sparc
{
uint32_t cpuvid;
if (nvlist_lookup_uint32(nvl, FM_FMRI_CPU_VID, &cpuvid) == 0) {
/*
* This FMRI has a 'cpuvid' member, but its value could
* be stale -- especially when restoring saved state.
* Do a fresh lookup and use the result for p_online().
*/
if (cpu_phys2virt(cpuid, &cpuvid) != 0)
return (fmd_fmri_set_errno(ENOENT));
return (p_online(cpuvid, P_STATUS) == P_FAULTED);
}
}
#endif /* sparc */
return (p_online(cpuid, P_STATUS) == P_FAULTED);
}
#ifdef sparc
int
fmd_fmri_init(void)
{
bzero(&cpu, sizeof (cpu_t));
return (cpu_mdesc_init());
}
void
fmd_fmri_fini(void)
{
cpu_mdesc_fini();
}
#endif /* sparc */