// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/sysfs.h>
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#include <linux/hwmon.h>
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#include <linux/err.h>
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#include <linux/sfp.h>
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#include "core.h"
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#include "core_env.h"
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#define MLXSW_HWMON_SENSORS_MAX_COUNT 64
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#define MLXSW_HWMON_MODULES_MAX_COUNT 64
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#define MLXSW_HWMON_GEARBOXES_MAX_COUNT 32
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#define MLXSW_HWMON_ATTR_PER_SENSOR 3
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#define MLXSW_HWMON_ATTR_PER_MODULE 7
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#define MLXSW_HWMON_ATTR_PER_GEARBOX 4
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#define MLXSW_HWMON_ATTR_COUNT (MLXSW_HWMON_SENSORS_MAX_COUNT * MLXSW_HWMON_ATTR_PER_SENSOR + \
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MLXSW_HWMON_MODULES_MAX_COUNT * MLXSW_HWMON_ATTR_PER_MODULE + \
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MLXSW_HWMON_GEARBOXES_MAX_COUNT * MLXSW_HWMON_ATTR_PER_GEARBOX + \
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MLXSW_MFCR_TACHOS_MAX + MLXSW_MFCR_PWMS_MAX)
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struct mlxsw_hwmon_attr {
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struct device_attribute dev_attr;
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struct mlxsw_hwmon *hwmon;
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unsigned int type_index;
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char name[32];
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};
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static int mlxsw_hwmon_get_attr_index(int index, int count)
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{
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if (index >= count)
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return index % count + MLXSW_REG_MTMP_GBOX_INDEX_MIN;
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return index;
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}
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struct mlxsw_hwmon {
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struct mlxsw_core *core;
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const struct mlxsw_bus_info *bus_info;
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struct device *hwmon_dev;
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struct attribute_group group;
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const struct attribute_group *groups[2];
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struct attribute *attrs[MLXSW_HWMON_ATTR_COUNT + 1];
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struct mlxsw_hwmon_attr hwmon_attrs[MLXSW_HWMON_ATTR_COUNT];
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unsigned int attrs_count;
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u8 sensor_count;
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u8 module_sensor_max;
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};
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static ssize_t mlxsw_hwmon_temp_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mtmp_pl[MLXSW_REG_MTMP_LEN];
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int temp, index;
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int err;
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index = mlxsw_hwmon_get_attr_index(mlwsw_hwmon_attr->type_index,
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mlxsw_hwmon->module_sensor_max);
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mlxsw_reg_mtmp_pack(mtmp_pl, index, false, false);
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
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if (err) {
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dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query temp sensor\n");
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return err;
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}
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mlxsw_reg_mtmp_unpack(mtmp_pl, &temp, NULL, NULL);
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return sprintf(buf, "%d\n", temp);
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}
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static ssize_t mlxsw_hwmon_temp_max_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mtmp_pl[MLXSW_REG_MTMP_LEN];
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int temp_max, index;
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int err;
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index = mlxsw_hwmon_get_attr_index(mlwsw_hwmon_attr->type_index,
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mlxsw_hwmon->module_sensor_max);
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mlxsw_reg_mtmp_pack(mtmp_pl, index, false, false);
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
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if (err) {
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dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query temp sensor\n");
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return err;
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}
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mlxsw_reg_mtmp_unpack(mtmp_pl, NULL, &temp_max, NULL);
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return sprintf(buf, "%d\n", temp_max);
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}
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static ssize_t mlxsw_hwmon_temp_rst_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t len)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mtmp_pl[MLXSW_REG_MTMP_LEN] = {0};
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unsigned long val;
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int index;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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if (val != 1)
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return -EINVAL;
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index = mlxsw_hwmon_get_attr_index(mlwsw_hwmon_attr->type_index,
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mlxsw_hwmon->module_sensor_max);
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mlxsw_reg_mtmp_sensor_index_set(mtmp_pl, index);
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
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if (err)
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return err;
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mlxsw_reg_mtmp_mte_set(mtmp_pl, true);
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mlxsw_reg_mtmp_mtr_set(mtmp_pl, true);
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err = mlxsw_reg_write(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
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if (err) {
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dev_err(mlxsw_hwmon->bus_info->dev, "Failed to reset temp sensor history\n");
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return err;
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}
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return len;
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}
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static ssize_t mlxsw_hwmon_fan_rpm_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mfsm_pl[MLXSW_REG_MFSM_LEN];
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int err;
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mlxsw_reg_mfsm_pack(mfsm_pl, mlwsw_hwmon_attr->type_index);
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfsm), mfsm_pl);
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if (err) {
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dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query fan\n");
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return err;
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}
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return sprintf(buf, "%u\n", mlxsw_reg_mfsm_rpm_get(mfsm_pl));
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}
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static ssize_t mlxsw_hwmon_fan_fault_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char fore_pl[MLXSW_REG_FORE_LEN];
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bool fault;
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int err;
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(fore), fore_pl);
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if (err) {
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dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query fan\n");
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return err;
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}
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mlxsw_reg_fore_unpack(fore_pl, mlwsw_hwmon_attr->type_index, &fault);
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return sprintf(buf, "%u\n", fault);
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}
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static ssize_t mlxsw_hwmon_pwm_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mfsc_pl[MLXSW_REG_MFSC_LEN];
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int err;
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mlxsw_reg_mfsc_pack(mfsc_pl, mlwsw_hwmon_attr->type_index, 0);
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mfsc), mfsc_pl);
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if (err) {
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dev_err(mlxsw_hwmon->bus_info->dev, "Failed to query PWM\n");
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return err;
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}
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return sprintf(buf, "%u\n",
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mlxsw_reg_mfsc_pwm_duty_cycle_get(mfsc_pl));
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}
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static ssize_t mlxsw_hwmon_pwm_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t len)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mfsc_pl[MLXSW_REG_MFSC_LEN];
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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if (val > 255)
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return -EINVAL;
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mlxsw_reg_mfsc_pack(mfsc_pl, mlwsw_hwmon_attr->type_index, val);
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err = mlxsw_reg_write(mlxsw_hwmon->core, MLXSW_REG(mfsc), mfsc_pl);
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if (err) {
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dev_err(mlxsw_hwmon->bus_info->dev, "Failed to write PWM\n");
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return err;
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}
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return len;
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}
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static int mlxsw_hwmon_module_temp_get(struct device *dev,
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struct device_attribute *attr,
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int *p_temp)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mtmp_pl[MLXSW_REG_MTMP_LEN];
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u8 module;
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int err;
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module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
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mlxsw_reg_mtmp_pack(mtmp_pl, MLXSW_REG_MTMP_MODULE_INDEX_MIN + module,
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false, false);
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
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if (err) {
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dev_err(dev, "Failed to query module temperature\n");
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return err;
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}
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mlxsw_reg_mtmp_unpack(mtmp_pl, p_temp, NULL, NULL);
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return 0;
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}
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static ssize_t mlxsw_hwmon_module_temp_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int err, temp;
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err = mlxsw_hwmon_module_temp_get(dev, attr, &temp);
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if (err)
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return err;
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return sprintf(buf, "%d\n", temp);
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}
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static ssize_t mlxsw_hwmon_module_temp_fault_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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char mtbr_pl[MLXSW_REG_MTBR_LEN] = {0};
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u8 module, fault;
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u16 temp;
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int err;
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module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
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mlxsw_reg_mtbr_pack(mtbr_pl, MLXSW_REG_MTBR_BASE_MODULE_INDEX + module,
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1);
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err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtbr), mtbr_pl);
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if (err) {
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dev_err(dev, "Failed to query module temperature sensor\n");
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return err;
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}
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mlxsw_reg_mtbr_temp_unpack(mtbr_pl, 0, &temp, NULL);
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/* Update status and temperature cache. */
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switch (temp) {
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case MLXSW_REG_MTBR_BAD_SENS_INFO:
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/* Untrusted cable is connected. Reading temperature from its
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* sensor is faulty.
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*/
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fault = 1;
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break;
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case MLXSW_REG_MTBR_NO_CONN:
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case MLXSW_REG_MTBR_NO_TEMP_SENS:
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case MLXSW_REG_MTBR_INDEX_NA:
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default:
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fault = 0;
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break;
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}
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return sprintf(buf, "%u\n", fault);
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}
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static int mlxsw_hwmon_module_temp_critical_get(struct device *dev,
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struct device_attribute *attr,
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int *p_temp)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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u8 module;
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int err;
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module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
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err = mlxsw_env_module_temp_thresholds_get(mlxsw_hwmon->core, module,
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SFP_TEMP_HIGH_WARN, p_temp);
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if (err) {
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dev_err(dev, "Failed to query module temperature thresholds\n");
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return err;
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}
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return 0;
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}
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static ssize_t
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mlxsw_hwmon_module_temp_critical_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int err, temp;
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err = mlxsw_hwmon_module_temp_critical_get(dev, attr, &temp);
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if (err)
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return err;
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return sprintf(buf, "%u\n", temp);
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}
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static int mlxsw_hwmon_module_temp_emergency_get(struct device *dev,
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struct device_attribute *attr,
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int *p_temp)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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u8 module;
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int err;
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module = mlwsw_hwmon_attr->type_index - mlxsw_hwmon->sensor_count;
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err = mlxsw_env_module_temp_thresholds_get(mlxsw_hwmon->core, module,
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SFP_TEMP_HIGH_ALARM, p_temp);
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if (err) {
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dev_err(dev, "Failed to query module temperature thresholds\n");
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return err;
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}
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return 0;
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}
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static ssize_t
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mlxsw_hwmon_module_temp_emergency_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int err, temp;
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err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &temp);
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if (err)
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return err;
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return sprintf(buf, "%u\n", temp);
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}
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static ssize_t
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mlxsw_hwmon_module_temp_label_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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return sprintf(buf, "front panel %03u\n",
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mlwsw_hwmon_attr->type_index);
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}
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static ssize_t
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mlxsw_hwmon_gbox_temp_label_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
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container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
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struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
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int index = mlwsw_hwmon_attr->type_index -
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mlxsw_hwmon->module_sensor_max + 1;
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return sprintf(buf, "gearbox %03u\n", index);
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}
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static ssize_t mlxsw_hwmon_temp_critical_alarm_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int err, temp, emergency_temp, critic_temp;
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err = mlxsw_hwmon_module_temp_get(dev, attr, &temp);
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if (err)
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return err;
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if (temp <= 0)
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return sprintf(buf, "%d\n", false);
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err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &emergency_temp);
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if (err)
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return err;
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if (temp >= emergency_temp)
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return sprintf(buf, "%d\n", false);
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err = mlxsw_hwmon_module_temp_critical_get(dev, attr, &critic_temp);
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if (err)
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return err;
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return sprintf(buf, "%d\n", temp >= critic_temp);
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}
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static ssize_t mlxsw_hwmon_temp_emergency_alarm_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int err, temp, emergency_temp;
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err = mlxsw_hwmon_module_temp_get(dev, attr, &temp);
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if (err)
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return err;
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if (temp <= 0)
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return sprintf(buf, "%d\n", false);
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err = mlxsw_hwmon_module_temp_emergency_get(dev, attr, &emergency_temp);
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if (err)
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return err;
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return sprintf(buf, "%d\n", temp >= emergency_temp);
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}
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enum mlxsw_hwmon_attr_type {
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MLXSW_HWMON_ATTR_TYPE_TEMP,
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MLXSW_HWMON_ATTR_TYPE_TEMP_MAX,
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MLXSW_HWMON_ATTR_TYPE_TEMP_RST,
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MLXSW_HWMON_ATTR_TYPE_FAN_RPM,
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MLXSW_HWMON_ATTR_TYPE_FAN_FAULT,
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MLXSW_HWMON_ATTR_TYPE_PWM,
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MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE,
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MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT,
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MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT,
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MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG,
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MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL,
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MLXSW_HWMON_ATTR_TYPE_TEMP_GBOX_LABEL,
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MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM,
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MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM,
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};
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static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon *mlxsw_hwmon,
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enum mlxsw_hwmon_attr_type attr_type,
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unsigned int type_index, unsigned int num) {
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struct mlxsw_hwmon_attr *mlxsw_hwmon_attr;
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unsigned int attr_index;
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attr_index = mlxsw_hwmon->attrs_count;
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mlxsw_hwmon_attr = &mlxsw_hwmon->hwmon_attrs[attr_index];
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switch (attr_type) {
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case MLXSW_HWMON_ATTR_TYPE_TEMP:
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mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_temp_show;
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mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
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snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
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"temp%u_input", num + 1);
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break;
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case MLXSW_HWMON_ATTR_TYPE_TEMP_MAX:
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mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_temp_max_show;
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mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
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snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
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"temp%u_highest", num + 1);
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break;
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case MLXSW_HWMON_ATTR_TYPE_TEMP_RST:
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mlxsw_hwmon_attr->dev_attr.store = mlxsw_hwmon_temp_rst_store;
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mlxsw_hwmon_attr->dev_attr.attr.mode = 0200;
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snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
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"temp%u_reset_history", num + 1);
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break;
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case MLXSW_HWMON_ATTR_TYPE_FAN_RPM:
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mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_fan_rpm_show;
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mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
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snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
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"fan%u_input", num + 1);
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break;
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case MLXSW_HWMON_ATTR_TYPE_FAN_FAULT:
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mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_fan_fault_show;
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mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
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snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
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"fan%u_fault", num + 1);
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break;
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case MLXSW_HWMON_ATTR_TYPE_PWM:
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mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_pwm_show;
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mlxsw_hwmon_attr->dev_attr.store = mlxsw_hwmon_pwm_store;
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mlxsw_hwmon_attr->dev_attr.attr.mode = 0644;
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snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
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"pwm%u", num + 1);
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break;
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case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE:
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mlxsw_hwmon_attr->dev_attr.show = mlxsw_hwmon_module_temp_show;
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mlxsw_hwmon_attr->dev_attr.attr.mode = 0444;
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snprintf(mlxsw_hwmon_attr->name, sizeof(mlxsw_hwmon_attr->name),
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"temp%u_input", num + 1);
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break;
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case MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT:
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mlxsw_hwmon_attr->dev_attr.show =
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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->hwmon = mlxsw_hwmon;
|
mlxsw_hwmon_attr->dev_attr.attr.name = mlxsw_hwmon_attr->name;
|
sysfs_attr_init(&mlxsw_hwmon_attr->dev_attr.attr);
|
|
mlxsw_hwmon->attrs[attr_index] = &mlxsw_hwmon_attr->dev_attr.attr;
|
mlxsw_hwmon->attrs_count++;
|
}
|
|
static int mlxsw_hwmon_temp_init(struct mlxsw_hwmon *mlxsw_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->sensor_count = mlxsw_reg_mtcap_sensor_count_get(mtcap_pl);
|
for (i = 0; i < mlxsw_hwmon->sensor_count; i++) {
|
char mtmp_pl[MLXSW_REG_MTMP_LEN] = {0};
|
|
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,
|
MLXSW_HWMON_ATTR_TYPE_TEMP, i, i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_MAX, i, i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_RST, i, i);
|
}
|
return 0;
|
}
|
|
static int mlxsw_hwmon_fans_init(struct mlxsw_hwmon *mlxsw_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,
|
MLXSW_HWMON_ATTR_TYPE_FAN_RPM,
|
type_index, num);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
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,
|
MLXSW_HWMON_ATTR_TYPE_PWM,
|
type_index, num++);
|
}
|
return 0;
|
}
|
|
static int mlxsw_hwmon_module_init(struct mlxsw_hwmon *mlxsw_hwmon)
|
{
|
char mgpir_pl[MLXSW_REG_MGPIR_LEN];
|
u8 module_sensor_max;
|
int i, err;
|
|
if (!mlxsw_core_res_query_enabled(mlxsw_hwmon->core))
|
return 0;
|
|
mlxsw_reg_mgpir_pack(mgpir_pl);
|
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);
|
|
/* 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->module_sensor_max = mlxsw_hwmon->sensor_count +
|
module_sensor_max;
|
for (i = mlxsw_hwmon->sensor_count;
|
i < mlxsw_hwmon->module_sensor_max; i++) {
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE, i, i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_FAULT,
|
i, i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_CRIT, i,
|
i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_EMERG,
|
i, i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_MODULE_LABEL,
|
i, i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_CRIT_ALARM,
|
i, i);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_EMERGENCY_ALARM,
|
i, i);
|
}
|
|
return 0;
|
}
|
|
static int mlxsw_hwmon_gearbox_init(struct mlxsw_hwmon *mlxsw_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);
|
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);
|
if (device_type != MLXSW_REG_MGPIR_DEVICE_TYPE_GEARBOX_DIE ||
|
!gbox_num)
|
return 0;
|
|
index = mlxsw_hwmon->module_sensor_max;
|
max_index = mlxsw_hwmon->module_sensor_max + gbox_num;
|
while (index < max_index) {
|
sensor_index = index % mlxsw_hwmon->module_sensor_max +
|
MLXSW_REG_MTMP_GBOX_INDEX_MIN;
|
mlxsw_reg_mtmp_pack(mtmp_pl, 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, MLXSW_HWMON_ATTR_TYPE_TEMP,
|
index, index);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_MAX, index,
|
index);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_RST, index,
|
index);
|
mlxsw_hwmon_attr_add(mlxsw_hwmon,
|
MLXSW_HWMON_ATTR_TYPE_TEMP_GBOX_LABEL,
|
index, index);
|
index++;
|
}
|
|
return 0;
|
}
|
|
int mlxsw_hwmon_init(struct mlxsw_core *mlxsw_core,
|
const struct mlxsw_bus_info *mlxsw_bus_info,
|
struct mlxsw_hwmon **p_hwmon)
|
{
|
struct mlxsw_hwmon *mlxsw_hwmon;
|
struct device *hwmon_dev;
|
int err;
|
|
mlxsw_hwmon = kzalloc(sizeof(*mlxsw_hwmon), GFP_KERNEL);
|
if (!mlxsw_hwmon)
|
return -ENOMEM;
|
mlxsw_hwmon->core = mlxsw_core;
|
mlxsw_hwmon->bus_info = mlxsw_bus_info;
|
|
err = mlxsw_hwmon_temp_init(mlxsw_hwmon);
|
if (err)
|
goto err_temp_init;
|
|
err = mlxsw_hwmon_fans_init(mlxsw_hwmon);
|
if (err)
|
goto err_fans_init;
|
|
err = mlxsw_hwmon_module_init(mlxsw_hwmon);
|
if (err)
|
goto err_temp_module_init;
|
|
err = mlxsw_hwmon_gearbox_init(mlxsw_hwmon);
|
if (err)
|
goto err_temp_gearbox_init;
|
|
mlxsw_hwmon->groups[0] = &mlxsw_hwmon->group;
|
mlxsw_hwmon->group.attrs = mlxsw_hwmon->attrs;
|
|
hwmon_dev = hwmon_device_register_with_groups(mlxsw_bus_info->dev,
|
"mlxsw", mlxsw_hwmon,
|
mlxsw_hwmon->groups);
|
if (IS_ERR(hwmon_dev)) {
|
err = PTR_ERR(hwmon_dev);
|
goto err_hwmon_register;
|
}
|
|
mlxsw_hwmon->hwmon_dev = hwmon_dev;
|
*p_hwmon = mlxsw_hwmon;
|
return 0;
|
|
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)
|
{
|
hwmon_device_unregister(mlxsw_hwmon->hwmon_dev);
|
kfree(mlxsw_hwmon);
|
}
|
