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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2019, Joyent, Inc.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <libnvpair.h>
#include <sys/sensors.h>
#include <sys/fm/protocol.h>
#include <fm/topo_mod.h>
#include <topo_sensor.h>
#include "chip.h"
static const char *chip_sensor_base = "/dev/sensors/temperature/cpu";
int
chip_create_core_temp_sensor(topo_mod_t *mod, tnode_t *pnode)
{
int err;
int32_t chip, core;
char buf[PATH_MAX];
struct stat st;
core = topo_node_instance(pnode);
if (topo_prop_get_int32(pnode, PGNAME(CORE), CORE_CHIP_ID, &chip,
&err) != 0) {
return (topo_mod_seterrno(mod, err));
}
if (snprintf(buf, sizeof (buf), "%s/chip%d.core%d", chip_sensor_base,
chip, core) >= sizeof (buf)) {
return (topo_mod_seterrno(mod, EMOD_UNKNOWN));
}
/*
* Some systems have per-core sensors. Others have it on a per-die aka
* procnode basis. Check to see if the file exists before we attempt to
* do something.
*/
if (stat(buf, &st) != 0) {
int32_t procnode;
if (errno != ENOENT) {
return (topo_mod_seterrno(mod, EMOD_UNKNOWN));
}
if (topo_prop_get_int32(pnode, PGNAME(CORE), CORE_PROCNODE_ID,
&procnode, &err) != 0) {
return (topo_mod_seterrno(mod, err));
}
if (snprintf(buf, sizeof (buf), "%s/procnode.%d",
chip_sensor_base, procnode) >= sizeof (buf)) {
return (topo_mod_seterrno(mod, EMOD_UNKNOWN));
}
}
return (topo_sensor_create_scalar_sensor(mod, pnode, buf, "temp"));
}
int
chip_create_chip_temp_sensor(topo_mod_t *mod, tnode_t *pnode)
{
int32_t chip;
char buf[PATH_MAX];
chip = topo_node_instance(pnode);
if (snprintf(buf, sizeof (buf), "%s/chip%d", chip_sensor_base,
chip) >= sizeof (buf)) {
return (topo_mod_seterrno(mod, EMOD_UNKNOWN));
}
return (topo_sensor_create_scalar_sensor(mod, pnode, buf, "temp"));
}
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