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229 lines
5.8 KiB
229 lines
5.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* Copyright(c) 2007 - 2018 Intel Corporation. */ |
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#include "igb.h" |
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#include "e1000_82575.h" |
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#include "e1000_hw.h" |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/sysfs.h> |
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#include <linux/kobject.h> |
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#include <linux/device.h> |
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#include <linux/netdevice.h> |
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#include <linux/hwmon.h> |
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#include <linux/pci.h> |
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#ifdef CONFIG_IGB_HWMON |
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static struct i2c_board_info i350_sensor_info = { |
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I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)), |
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}; |
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/* hwmon callback functions */ |
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static ssize_t igb_hwmon_show_location(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 hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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dev_attr); |
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return sprintf(buf, "loc%u\n", |
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igb_attr->sensor->location); |
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} |
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static ssize_t igb_hwmon_show_temp(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 hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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dev_attr); |
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unsigned int value; |
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/* reset the temp field */ |
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igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw); |
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value = igb_attr->sensor->temp; |
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/* display millidegree */ |
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value *= 1000; |
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return sprintf(buf, "%u\n", value); |
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} |
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static ssize_t igb_hwmon_show_cautionthresh(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 hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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dev_attr); |
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unsigned int value = igb_attr->sensor->caution_thresh; |
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/* display millidegree */ |
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value *= 1000; |
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return sprintf(buf, "%u\n", value); |
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} |
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static ssize_t igb_hwmon_show_maxopthresh(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 hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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dev_attr); |
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unsigned int value = igb_attr->sensor->max_op_thresh; |
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/* display millidegree */ |
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value *= 1000; |
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return sprintf(buf, "%u\n", value); |
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} |
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/* igb_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file. |
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* @ adapter: pointer to the adapter structure |
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* @ offset: offset in the eeprom sensor data table |
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* @ type: type of sensor data to display |
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* |
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* For each file we want in hwmon's sysfs interface we need a device_attribute |
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* This is included in our hwmon_attr struct that contains the references to |
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* the data structures we need to get the data to display. |
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*/ |
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static int igb_add_hwmon_attr(struct igb_adapter *adapter, |
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unsigned int offset, int type) |
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{ |
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int rc; |
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unsigned int n_attr; |
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struct hwmon_attr *igb_attr; |
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n_attr = adapter->igb_hwmon_buff->n_hwmon; |
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igb_attr = &adapter->igb_hwmon_buff->hwmon_list[n_attr]; |
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switch (type) { |
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case IGB_HWMON_TYPE_LOC: |
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igb_attr->dev_attr.show = igb_hwmon_show_location; |
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snprintf(igb_attr->name, sizeof(igb_attr->name), |
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"temp%u_label", offset + 1); |
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break; |
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case IGB_HWMON_TYPE_TEMP: |
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igb_attr->dev_attr.show = igb_hwmon_show_temp; |
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snprintf(igb_attr->name, sizeof(igb_attr->name), |
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"temp%u_input", offset + 1); |
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break; |
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case IGB_HWMON_TYPE_CAUTION: |
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igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh; |
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snprintf(igb_attr->name, sizeof(igb_attr->name), |
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"temp%u_max", offset + 1); |
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break; |
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case IGB_HWMON_TYPE_MAX: |
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igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh; |
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snprintf(igb_attr->name, sizeof(igb_attr->name), |
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"temp%u_crit", offset + 1); |
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break; |
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default: |
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rc = -EPERM; |
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return rc; |
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} |
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/* These always the same regardless of type */ |
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igb_attr->sensor = |
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&adapter->hw.mac.thermal_sensor_data.sensor[offset]; |
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igb_attr->hw = &adapter->hw; |
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igb_attr->dev_attr.store = NULL; |
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igb_attr->dev_attr.attr.mode = 0444; |
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igb_attr->dev_attr.attr.name = igb_attr->name; |
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sysfs_attr_init(&igb_attr->dev_attr.attr); |
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adapter->igb_hwmon_buff->attrs[n_attr] = &igb_attr->dev_attr.attr; |
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++adapter->igb_hwmon_buff->n_hwmon; |
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return 0; |
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} |
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static void igb_sysfs_del_adapter(struct igb_adapter *adapter) |
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{ |
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} |
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/* called from igb_main.c */ |
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void igb_sysfs_exit(struct igb_adapter *adapter) |
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{ |
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igb_sysfs_del_adapter(adapter); |
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} |
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/* called from igb_main.c */ |
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int igb_sysfs_init(struct igb_adapter *adapter) |
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{ |
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struct hwmon_buff *igb_hwmon; |
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struct i2c_client *client; |
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struct device *hwmon_dev; |
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unsigned int i; |
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int rc = 0; |
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/* If this method isn't defined we don't support thermals */ |
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if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) |
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goto exit; |
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/* Don't create thermal hwmon interface if no sensors present */ |
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rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw)); |
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if (rc) |
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goto exit; |
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igb_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*igb_hwmon), |
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GFP_KERNEL); |
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if (!igb_hwmon) { |
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rc = -ENOMEM; |
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goto exit; |
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} |
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adapter->igb_hwmon_buff = igb_hwmon; |
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for (i = 0; i < E1000_MAX_SENSORS; i++) { |
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/* Only create hwmon sysfs entries for sensors that have |
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* meaningful data. |
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*/ |
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if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0) |
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continue; |
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/* Bail if any hwmon attr struct fails to initialize */ |
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rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION); |
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if (rc) |
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goto exit; |
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rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC); |
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if (rc) |
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goto exit; |
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rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP); |
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if (rc) |
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goto exit; |
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rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX); |
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if (rc) |
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goto exit; |
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} |
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/* init i2c_client */ |
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client = i2c_new_client_device(&adapter->i2c_adap, &i350_sensor_info); |
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if (IS_ERR(client)) { |
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dev_info(&adapter->pdev->dev, |
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"Failed to create new i2c device.\n"); |
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rc = PTR_ERR(client); |
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goto exit; |
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} |
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adapter->i2c_client = client; |
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igb_hwmon->groups[0] = &igb_hwmon->group; |
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igb_hwmon->group.attrs = igb_hwmon->attrs; |
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hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev, |
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client->name, |
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igb_hwmon, |
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igb_hwmon->groups); |
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if (IS_ERR(hwmon_dev)) { |
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rc = PTR_ERR(hwmon_dev); |
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goto err; |
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} |
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goto exit; |
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err: |
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igb_sysfs_del_adapter(adapter); |
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exit: |
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return rc; |
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} |
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#endif
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