blob: 70735068cf292b68ceb5e83bdad5e3dd0f7e70d3 [file] [log] [blame]
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/hwmon.h>
#include <linux/err.h>
#include <linux/sfp.h>
#include "core.h"
#include "core_env.h"
#define MLXSW_HWMON_SENSORS_MAX_COUNT 64
#define MLXSW_HWMON_MODULES_MAX_COUNT 64
#define MLXSW_HWMON_GEARBOXES_MAX_COUNT 32
#define MLXSW_HWMON_ATTR_PER_SENSOR 3
#define MLXSW_HWMON_ATTR_PER_MODULE 7
#define MLXSW_HWMON_ATTR_PER_GEARBOX 4
#define MLXSW_HWMON_DEV_NAME_LEN_MAX 16
#define MLXSW_HWMON_ATTR_COUNT (MLXSW_HWMON_SENSORS_MAX_COUNT * MLXSW_HWMON_ATTR_PER_SENSOR + \
MLXSW_HWMON_MODULES_MAX_COUNT * MLXSW_HWMON_ATTR_PER_MODULE + \
MLXSW_HWMON_GEARBOXES_MAX_COUNT * MLXSW_HWMON_ATTR_PER_GEARBOX + \
MLXSW_MFCR_TACHOS_MAX + MLXSW_MFCR_PWMS_MAX)
struct mlxsw_hwmon_attr {
struct device_attribute dev_attr;
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev;
unsigned int type_index;
char name[32];
};
static int mlxsw_hwmon_get_attr_index(int index, int count)
{
if (index >= count)
return index % count + MLXSW_REG_MTMP_GBOX_INDEX_MIN;
return index;
}
struct mlxsw_hwmon_dev {
char name[MLXSW_HWMON_DEV_NAME_LEN_MAX];
struct mlxsw_hwmon *hwmon;
struct device *hwmon_dev;
struct attribute_group group;
const struct attribute_group *groups[2];
struct attribute *attrs[MLXSW_HWMON_ATTR_COUNT + 1];
struct mlxsw_hwmon_attr hwmon_attrs[MLXSW_HWMON_ATTR_COUNT];
unsigned int attrs_count;
u8 sensor_count;
u8 module_sensor_max;
u8 slot_index;
bool active;
};
struct mlxsw_hwmon {
struct mlxsw_core *core;
const struct mlxsw_bus_info *bus_info;
struct mlxsw_hwmon_dev line_cards[];
};
static ssize_t mlxsw_hwmon_temp_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mtmp_pl[MLXSW_REG_MTMP_LEN];
int temp, index;
int err;
index = mlxsw_hwmon_get_attr_index(mlxsw_hwmon_attr->type_index,
mlxsw_hwmon_dev->module_sensor_max);
mlxsw_reg_mtmp_pack(mtmp_pl, mlxsw_hwmon_dev->slot_index, index, false,
false);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query temp sensor\n");
return err;
}
mlxsw_reg_mtmp_unpack(mtmp_pl, &temp, NULL, NULL, NULL, NULL);
return sprintf(buf, "%d\n", temp);
}
static ssize_t mlxsw_hwmon_temp_max_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mtmp_pl[MLXSW_REG_MTMP_LEN];
int temp_max, index;
int err;
index = mlxsw_hwmon_get_attr_index(mlxsw_hwmon_attr->type_index,
mlxsw_hwmon_dev->module_sensor_max);
mlxsw_reg_mtmp_pack(mtmp_pl, mlxsw_hwmon_dev->slot_index, index, false,
false);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query temp sensor\n");
return err;
}
mlxsw_reg_mtmp_unpack(mtmp_pl, NULL, &temp_max, NULL, NULL, NULL);
return sprintf(buf, "%d\n", temp_max);
}
static ssize_t mlxsw_hwmon_temp_rst_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mtmp_pl[MLXSW_REG_MTMP_LEN];
unsigned long val;
int index;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
if (val != 1)
return -EINVAL;
index = mlxsw_hwmon_get_attr_index(mlxsw_hwmon_attr->type_index,
mlxsw_hwmon_dev->module_sensor_max);
mlxsw_reg_mtmp_slot_index_set(mtmp_pl, mlxsw_hwmon_dev->slot_index);
mlxsw_reg_mtmp_sensor_index_set(mtmp_pl, index);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
if (err)
return err;
mlxsw_reg_mtmp_mte_set(mtmp_pl, true);
mlxsw_reg_mtmp_mtr_set(mtmp_pl, true);
err = mlxsw_reg_write(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to reset temp sensor history\n");
return err;
}
return len;
}
static ssize_t mlxsw_hwmon_fan_rpm_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mfsm_pl[MLXSW_REG_MFSM_LEN];
int err;
mlxsw_reg_mfsm_pack(mfsm_pl, mlxsw_hwmon_attr->type_index);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfsm), mfsm_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query fan\n");
return err;
}
return sprintf(buf, "%u\n", mlxsw_reg_mfsm_rpm_get(mfsm_pl));
}
static ssize_t mlxsw_hwmon_fan_fault_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char fore_pl[MLXSW_REG_FORE_LEN];
bool fault;
int err;
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(fore), fore_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query fan\n");
return err;
}
mlxsw_reg_fore_unpack(fore_pl, mlxsw_hwmon_attr->type_index, &fault);
return sprintf(buf, "%u\n", fault);
}
static ssize_t mlxsw_hwmon_pwm_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mfsc_pl[MLXSW_REG_MFSC_LEN];
int err;
mlxsw_reg_mfsc_pack(mfsc_pl, mlxsw_hwmon_attr->type_index, 0);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfsc), mfsc_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query PWM\n");
return err;
}
return sprintf(buf, "%u\n",
mlxsw_reg_mfsc_pwm_duty_cycle_get(mfsc_pl));
}
static ssize_t mlxsw_hwmon_pwm_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mfsc_pl[MLXSW_REG_MFSC_LEN];
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
if (val > 255)
return -EINVAL;
mlxsw_reg_mfsc_pack(mfsc_pl, mlxsw_hwmon_attr->type_index, val);
err = mlxsw_reg_write(mlxsw_hwmon->core, MLXSW_REG(mfsc), mfsc_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to write PWM\n");
return err;
}
return len;
}
static int mlxsw_hwmon_module_temp_get(struct device *dev,
struct device_attribute *attr,
int *p_temp)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mtmp_pl[MLXSW_REG_MTMP_LEN];
u8 module;
int err;
module = mlxsw_hwmon_attr->type_index - mlxsw_hwmon_dev->sensor_count;
mlxsw_reg_mtmp_pack(mtmp_pl, mlxsw_hwmon_dev->slot_index,
MLXSW_REG_MTMP_MODULE_INDEX_MIN + module, false,
false);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(dev, "Failed to query module temperature\n");
return err;
}
mlxsw_reg_mtmp_unpack(mtmp_pl, p_temp, NULL, NULL, NULL, NULL);
return 0;
}
static ssize_t mlxsw_hwmon_module_temp_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int err, temp;
err = mlxsw_hwmon_module_temp_get(dev, attr, &temp);
if (err)
return err;
return sprintf(buf, "%d\n", temp);
}
static ssize_t mlxsw_hwmon_module_temp_fault_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mtbr_pl[MLXSW_REG_MTBR_LEN] = {0};
u8 module, fault;
u16 temp;
int err;
module = mlxsw_hwmon_attr->type_index - mlxsw_hwmon_dev->sensor_count;
mlxsw_reg_mtbr_pack(mtbr_pl, mlxsw_hwmon_dev->slot_index,
MLXSW_REG_MTBR_BASE_MODULE_INDEX + module, 1);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtbr), mtbr_pl);
if (err) {
dev_err(dev, "Failed to query module temperature sensor\n");
return err;
}
mlxsw_reg_mtbr_temp_unpack(mtbr_pl, 0, &temp, NULL);
/* Update status and temperature cache. */
switch (temp) {
case MLXSW_REG_MTBR_BAD_SENS_INFO:
/* Untrusted cable is connected. Reading temperature from its
* sensor is faulty.
*/
fault = 1;
break;
case MLXSW_REG_MTBR_NO_CONN:
case MLXSW_REG_MTBR_NO_TEMP_SENS:
case MLXSW_REG_MTBR_INDEX_NA:
default:
fault = 0;
break;
}
return sprintf(buf, "%u\n", fault);
}
static int mlxsw_hwmon_module_temp_critical_get(struct device *dev,
struct device_attribute *attr,
int *p_temp)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
u8 module;
int err;
module = mlxsw_hwmon_attr->type_index - mlxsw_hwmon_dev->sensor_count;
err = mlxsw_env_module_temp_thresholds_get(mlxsw_hwmon->core,
mlxsw_hwmon_dev->slot_index,
module, SFP_TEMP_HIGH_WARN,
p_temp);
if (err) {
dev_err(dev, "Failed to query module temperature thresholds\n");
return err;
}
return 0;
}
static ssize_t
mlxsw_hwmon_module_temp_critical_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int err, temp;
err = mlxsw_hwmon_module_temp_critical_get(dev, attr, &temp);
if (err)
return err;
return sprintf(buf, "%u\n", temp);
}
static int mlxsw_hwmon_module_temp_emergency_get(struct device *dev,
struct device_attribute *attr,
int *p_temp)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
u8 module;
int err;
module = mlxsw_hwmon_attr->type_index - mlxsw_hwmon_dev->sensor_count;
err = mlxsw_env_module_temp_thresholds_get(mlxsw_hwmon->core,
mlxsw_hwmon_dev->slot_index,
module, SFP_TEMP_HIGH_ALARM,
p_temp);
if (err) {
dev_err(dev, "Failed to query module temperature thresholds\n");
return err;
}
return 0;
}
static ssize_t
mlxsw_hwmon_module_temp_emergency_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int err, temp;
err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &temp);
if (err)
return err;
return sprintf(buf, "%u\n", temp);
}
static ssize_t
mlxsw_hwmon_module_temp_label_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
return sprintf(buf, "front panel %03u\n",
mlxsw_hwmon_attr->type_index);
}
static ssize_t
mlxsw_hwmon_gbox_temp_label_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr =
container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
struct mlxsw_hwmon_dev *mlxsw_hwmon_dev = mlxsw_hwmon_attr->mlxsw_hwmon_dev;
int index = mlxsw_hwmon_attr->type_index -
mlxsw_hwmon_dev->module_sensor_max + 1;
return sprintf(buf, "gearbox %03u\n", index);
}
static ssize_t mlxsw_hwmon_temp_critical_alarm_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int err, temp, emergency_temp, critic_temp;
err = mlxsw_hwmon_module_temp_get(dev, attr, &temp);
if (err)
return err;
if (temp <= 0)
return sprintf(buf, "%d\n", false);
err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &emergency_temp);
if (err)
return err;
if (temp >= emergency_temp)
return sprintf(buf, "%d\n", false);
err = mlxsw_hwmon_module_temp_critical_get(dev, attr, &critic_temp);
if (err)
return err;
return sprintf(buf, "%d\n", temp >= critic_temp);
}
static ssize_t mlxsw_hwmon_temp_emergency_alarm_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int err, temp, emergency_temp;
err = mlxsw_hwmon_module_temp_get(dev, attr, &temp);
if (err)
return err;
if (temp <= 0)
return sprintf(buf, "%d\n", false);
err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &emergency_temp);
if (err)
return err;
return sprintf(buf, "%d\n", temp >= emergency_temp);
}
enum mlxsw_hwmon_attr_type {
MLXSW_HWMON_ATTR_TYPE_TEMP,
MLXSW_HWMON_ATTR_TYPE_TEMP_MAX,
MLXSW_HWMON_ATTR_TYPE_TEMP_RST,
MLXSW_HWMON_ATTR_TYPE_FAN_RPM,
MLXSW_HWMON_ATTR_TYPE_FAN_FAULT,
MLXSW_HWMON_ATTR_TYPE_PWM,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL,
MLXSW_HWMON_ATTR_TYPE_TEMP_GBOX_LABEL,
MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM,
MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM,
};
static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon_dev *mlxsw_hwmon_dev,
enum mlxsw_hwmon_attr_type attr_type,
unsigned int type_index, unsigned int num)
{
struct mlxsw_hwmon_attr *mlxsw_hwmon_attr;
unsigned int attr_index;
attr_index = mlxsw_hwmon_dev->attrs_count;
mlxsw_hwmon_attr = &mlxsw_hwmon_dev->hwmon_attrs[attr_index];
switch (attr_type) {
case MLXSW_HWMON_ATTR_TYPE_TEMP:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_temp_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_input", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MAX:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_temp_max_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_highest", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_RST:
mlxsw_hwmon_attr->dev_attr.store = mlxsw_hwmon_temp_rst_store;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0200;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_reset_history", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_FAN_RPM:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_fan_rpm_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"fan%u_input", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_FAN_FAULT:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_fan_fault_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"fan%u_fault", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_PWM:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_pwm_show;
mlxsw_hwmon_attr->dev_attr.store = mlxsw_hwmon_pwm_store;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0644;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"pwm%u", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE:
mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_module_temp_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_input", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_fault_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_fault", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_critical_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_crit", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_emergency_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_emergency", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_module_temp_label_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_label", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_GBOX_LABEL:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_gbox_temp_label_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_label", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_temp_critical_alarm_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_crit_alarm", num + 1);
break;
case MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM:
mlxsw_hwmon_attr->dev_attr.show =
mlxsw_hwmon_temp_emergency_alarm_show;
mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
"temp%u_emergency_alarm", num + 1);
break;
default:
WARN_ON(1);
}
mlxsw_hwmon_attr->type_index = type_index;
mlxsw_hwmon_attr->mlxsw_hwmon_dev = mlxsw_hwmon_dev;
mlxsw_hwmon_attr->dev_attr.attr.name = mlxsw_hwmon_attr->name;
sysfs_attr_init(&mlxsw_hwmon_attr->dev_attr.attr);
mlxsw_hwmon_dev->attrs[attr_index] = &mlxsw_hwmon_attr->dev_attr.attr;
mlxsw_hwmon_dev->attrs_count++;
}
static int mlxsw_hwmon_temp_init(struct mlxsw_hwmon_dev *mlxsw_hwmon_dev)
{
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mtcap_pl[MLXSW_REG_MTCAP_LEN] = {0};
int i;
int err;
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtcap), mtcap_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to get number of temp sensors\n");
return err;
}
mlxsw_hwmon_dev->sensor_count = mlxsw_reg_mtcap_sensor_count_get(mtcap_pl);
for (i = 0; i < mlxsw_hwmon_dev->sensor_count; i++) {
char mtmp_pl[MLXSW_REG_MTMP_LEN] = {0};
mlxsw_reg_mtmp_slot_index_set(mtmp_pl,
mlxsw_hwmon_dev->slot_index);
mlxsw_reg_mtmp_sensor_index_set(mtmp_pl, i);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp),
mtmp_pl);
if (err)
return err;
mlxsw_reg_mtmp_mte_set(mtmp_pl, true);
mlxsw_reg_mtmp_mtr_set(mtmp_pl, true);
err = mlxsw_reg_write(mlxsw_hwmon->core,
MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to setup temp sensor number %d\n",
i);
return err;
}
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP, i, i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_MAX, i, i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_RST, i, i);
}
return 0;
}
static int mlxsw_hwmon_fans_init(struct mlxsw_hwmon_dev *mlxsw_hwmon_dev)
{
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mfcr_pl[MLXSW_REG_MFCR_LEN] = {0};
enum mlxsw_reg_mfcr_pwm_frequency freq;
unsigned int type_index;
unsigned int num;
u16 tacho_active;
u8 pwm_active;
int err;
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfcr), mfcr_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to get to probe PWMs and Tachometers\n");
return err;
}
mlxsw_reg_mfcr_unpack(mfcr_pl, &freq, &tacho_active, &pwm_active);
num = 0;
for (type_index = 0; type_index < MLXSW_MFCR_TACHOS_MAX; type_index++) {
if (tacho_active & BIT(type_index)) {
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_FAN_RPM,
type_index, num);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_FAN_FAULT,
type_index, num++);
}
}
num = 0;
for (type_index = 0; type_index < MLXSW_MFCR_PWMS_MAX; type_index++) {
if (pwm_active & BIT(type_index))
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_PWM,
type_index, num++);
}
return 0;
}
static int mlxsw_hwmon_module_init(struct mlxsw_hwmon_dev *mlxsw_hwmon_dev)
{
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
char mgpir_pl[MLXSW_REG_MGPIR_LEN];
u8 module_sensor_max;
int i, err;
mlxsw_reg_mgpir_pack(mgpir_pl, mlxsw_hwmon_dev->slot_index);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mgpir), mgpir_pl);
if (err)
return err;
mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL,
&module_sensor_max, NULL);
/* Add extra attributes for module temperature. Sensor index is
* assigned to sensor_count value, while all indexed before
* sensor_count are already utilized by the sensors connected through
* mtmp register by mlxsw_hwmon_temp_init().
*/
mlxsw_hwmon_dev->module_sensor_max = mlxsw_hwmon_dev->sensor_count +
module_sensor_max;
for (i = mlxsw_hwmon_dev->sensor_count;
i < mlxsw_hwmon_dev->module_sensor_max; i++) {
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE, i, i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT,
i, i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT, i,
i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG,
i, i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL,
i, i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM,
i, i);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM,
i, i);
}
return 0;
}
static int mlxsw_hwmon_gearbox_init(struct mlxsw_hwmon_dev *mlxsw_hwmon_dev)
{
struct mlxsw_hwmon *mlxsw_hwmon = mlxsw_hwmon_dev->hwmon;
enum mlxsw_reg_mgpir_device_type device_type;
int index, max_index, sensor_index;
char mgpir_pl[MLXSW_REG_MGPIR_LEN];
char mtmp_pl[MLXSW_REG_MTMP_LEN];
u8 gbox_num;
int err;
mlxsw_reg_mgpir_pack(mgpir_pl, mlxsw_hwmon_dev->slot_index);
err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mgpir), mgpir_pl);
if (err)
return err;
mlxsw_reg_mgpir_unpack(mgpir_pl, &gbox_num, &device_type, NULL, NULL,
NULL);
if (device_type != MLXSW_REG_MGPIR_DEVICE_TYPE_GEARBOX_DIE ||
!gbox_num)
return 0;
index = mlxsw_hwmon_dev->module_sensor_max;
max_index = mlxsw_hwmon_dev->module_sensor_max + gbox_num;
while (index < max_index) {
sensor_index = index % mlxsw_hwmon_dev->module_sensor_max +
MLXSW_REG_MTMP_GBOX_INDEX_MIN;
mlxsw_reg_mtmp_pack(mtmp_pl, mlxsw_hwmon_dev->slot_index,
sensor_index, true, true);
err = mlxsw_reg_write(mlxsw_hwmon->core,
MLXSW_REG(mtmp), mtmp_pl);
if (err) {
dev_err(mlxsw_hwmon->bus_info->dev, "Failed to setup temp sensor number %d\n",
sensor_index);
return err;
}
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP, index, index);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_MAX, index,
index);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_RST, index,
index);
mlxsw_hwmon_attr_add(mlxsw_hwmon_dev,
MLXSW_HWMON_ATTR_TYPE_TEMP_GBOX_LABEL,
index, index);
index++;
}
return 0;
}
static void
mlxsw_hwmon_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index,
void *priv)
{
struct mlxsw_hwmon *hwmon = priv;
struct mlxsw_hwmon_dev *linecard;
struct device *dev;
int err;
dev = hwmon->bus_info->dev;
linecard = &hwmon->line_cards[slot_index];
if (linecard->active)
return;
/* For the main board, module sensor indexes start from 1, sensor index
* 0 is used for the ASIC. Use the same numbering for line cards.
*/
linecard->sensor_count = 1;
linecard->slot_index = slot_index;
linecard->hwmon = hwmon;
err = mlxsw_hwmon_module_init(linecard);
if (err) {
dev_err(dev, "Failed to configure hwmon objects for line card modules in slot %d\n",
slot_index);
return;
}
err = mlxsw_hwmon_gearbox_init(linecard);
if (err) {
dev_err(dev, "Failed to configure hwmon objects for line card gearboxes in slot %d\n",
slot_index);
return;
}
linecard->groups[0] = &linecard->group;
linecard->group.attrs = linecard->attrs;
sprintf(linecard->name, "%s#%02u", "linecard", slot_index);
linecard->hwmon_dev =
hwmon_device_register_with_groups(dev, linecard->name,
linecard, linecard->groups);
if (IS_ERR(linecard->hwmon_dev)) {
dev_err(dev, "Failed to register hwmon objects for line card in slot %d\n",
slot_index);
return;
}
linecard->active = true;
}
static void
mlxsw_hwmon_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index,
void *priv)
{
struct mlxsw_hwmon *hwmon = priv;
struct mlxsw_hwmon_dev *linecard;
linecard = &hwmon->line_cards[slot_index];
if (!linecard->active)
return;
linecard->active = false;
hwmon_device_unregister(linecard->hwmon_dev);
/* Reset attributes counter */
linecard->attrs_count = 0;
}
static struct mlxsw_linecards_event_ops mlxsw_hwmon_event_ops = {
.got_active = mlxsw_hwmon_got_active,
.got_inactive = mlxsw_hwmon_got_inactive,
};
int mlxsw_hwmon_init(struct mlxsw_core *mlxsw_core,
const struct mlxsw_bus_info *mlxsw_bus_info,
struct mlxsw_hwmon **p_hwmon)
{
char mgpir_pl[MLXSW_REG_MGPIR_LEN];
struct mlxsw_hwmon *mlxsw_hwmon;
struct device *hwmon_dev;
u8 num_of_slots;
int err;
mlxsw_reg_mgpir_pack(mgpir_pl, 0);
err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mgpir), mgpir_pl);
if (err)
return err;
mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL, NULL,
&num_of_slots);
mlxsw_hwmon = kzalloc(struct_size(mlxsw_hwmon, line_cards,
num_of_slots + 1), GFP_KERNEL);
if (!mlxsw_hwmon)
return -ENOMEM;
mlxsw_hwmon->core = mlxsw_core;
mlxsw_hwmon->bus_info = mlxsw_bus_info;
mlxsw_hwmon->line_cards[0].hwmon = mlxsw_hwmon;
mlxsw_hwmon->line_cards[0].slot_index = 0;
err = mlxsw_hwmon_temp_init(&mlxsw_hwmon->line_cards[0]);
if (err)
goto err_temp_init;
err = mlxsw_hwmon_fans_init(&mlxsw_hwmon->line_cards[0]);
if (err)
goto err_fans_init;
err = mlxsw_hwmon_module_init(&mlxsw_hwmon->line_cards[0]);
if (err)
goto err_temp_module_init;
err = mlxsw_hwmon_gearbox_init(&mlxsw_hwmon->line_cards[0]);
if (err)
goto err_temp_gearbox_init;
mlxsw_hwmon->line_cards[0].groups[0] = &mlxsw_hwmon->line_cards[0].group;
mlxsw_hwmon->line_cards[0].group.attrs = mlxsw_hwmon->line_cards[0].attrs;
hwmon_dev = hwmon_device_register_with_groups(mlxsw_bus_info->dev,
"mlxsw",
&mlxsw_hwmon->line_cards[0],
mlxsw_hwmon->line_cards[0].groups);
if (IS_ERR(hwmon_dev)) {
err = PTR_ERR(hwmon_dev);
goto err_hwmon_register;
}
err = mlxsw_linecards_event_ops_register(mlxsw_hwmon->core,
&mlxsw_hwmon_event_ops,
mlxsw_hwmon);
if (err)
goto err_linecards_event_ops_register;
mlxsw_hwmon->line_cards[0].hwmon_dev = hwmon_dev;
mlxsw_hwmon->line_cards[0].active = true;
*p_hwmon = mlxsw_hwmon;
return 0;
err_linecards_event_ops_register:
hwmon_device_unregister(mlxsw_hwmon->line_cards[0].hwmon_dev);
err_hwmon_register:
err_temp_gearbox_init:
err_temp_module_init:
err_fans_init:
err_temp_init:
kfree(mlxsw_hwmon);
return err;
}
void mlxsw_hwmon_fini(struct mlxsw_hwmon *mlxsw_hwmon)
{
mlxsw_hwmon->line_cards[0].active = false;
mlxsw_linecards_event_ops_unregister(mlxsw_hwmon->core,
&mlxsw_hwmon_event_ops, mlxsw_hwmon);
hwmon_device_unregister(mlxsw_hwmon->line_cards[0].hwmon_dev);
kfree(mlxsw_hwmon);
}