244 lines
6.8 KiB
C
244 lines
6.8 KiB
C
/*******************************************************************************
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Intel 10 Gigabit PCI Express Linux driver
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Copyright(c) 1999 - 2013 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#include "ixgbe.h"
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#include "ixgbe_common.h"
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#include "ixgbe_type.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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/* hwmon callback functions */
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static ssize_t ixgbe_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 *ixgbe_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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ixgbe_attr->sensor->location);
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}
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static ssize_t ixgbe_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 *ixgbe_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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ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
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value = ixgbe_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 ixgbe_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 *ixgbe_attr = container_of(attr, struct hwmon_attr,
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dev_attr);
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unsigned int value = ixgbe_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 ixgbe_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 *ixgbe_attr = container_of(attr, struct hwmon_attr,
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dev_attr);
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unsigned int value = ixgbe_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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/**
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* ixgbe_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 ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter,
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unsigned int offset, int type) {
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int rc;
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unsigned int n_attr;
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struct hwmon_attr *ixgbe_attr;
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n_attr = adapter->ixgbe_hwmon_buff.n_hwmon;
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ixgbe_attr = &adapter->ixgbe_hwmon_buff.hwmon_list[n_attr];
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switch (type) {
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case IXGBE_HWMON_TYPE_LOC:
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ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_location;
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snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
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"temp%u_label", offset);
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break;
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case IXGBE_HWMON_TYPE_TEMP:
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ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_temp;
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snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
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"temp%u_input", offset);
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break;
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case IXGBE_HWMON_TYPE_CAUTION:
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ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_cautionthresh;
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snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
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"temp%u_max", offset);
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break;
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case IXGBE_HWMON_TYPE_MAX:
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ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_maxopthresh;
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snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
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"temp%u_crit", offset);
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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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ixgbe_attr->sensor =
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&adapter->hw.mac.thermal_sensor_data.sensor[offset];
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ixgbe_attr->hw = &adapter->hw;
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ixgbe_attr->dev_attr.store = NULL;
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ixgbe_attr->dev_attr.attr.mode = S_IRUGO;
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ixgbe_attr->dev_attr.attr.name = ixgbe_attr->name;
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rc = device_create_file(&adapter->pdev->dev,
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&ixgbe_attr->dev_attr);
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if (rc == 0)
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++adapter->ixgbe_hwmon_buff.n_hwmon;
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return rc;
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}
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static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
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{
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int i;
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if (adapter == NULL)
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return;
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for (i = 0; i < adapter->ixgbe_hwmon_buff.n_hwmon; i++) {
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device_remove_file(&adapter->pdev->dev,
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&adapter->ixgbe_hwmon_buff.hwmon_list[i].dev_attr);
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}
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kfree(adapter->ixgbe_hwmon_buff.hwmon_list);
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if (adapter->ixgbe_hwmon_buff.device)
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hwmon_device_unregister(adapter->ixgbe_hwmon_buff.device);
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}
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/* called from ixgbe_main.c */
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void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
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{
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ixgbe_sysfs_del_adapter(adapter);
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}
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/* called from ixgbe_main.c */
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int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
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{
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struct hwmon_buff *ixgbe_hwmon = &adapter->ixgbe_hwmon_buff;
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unsigned int i;
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int n_attrs;
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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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}
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/* Don't create thermal hwmon interface if no sensors present */
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if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
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goto exit;
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/*
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* Allocation space for max attributs
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* max num sensors * values (loc, temp, max, caution)
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*/
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n_attrs = IXGBE_MAX_SENSORS * 4;
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ixgbe_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr),
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GFP_KERNEL);
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if (!ixgbe_hwmon->hwmon_list) {
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rc = -ENOMEM;
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goto err;
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}
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ixgbe_hwmon->device = hwmon_device_register(&adapter->pdev->dev);
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if (IS_ERR(ixgbe_hwmon->device)) {
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rc = PTR_ERR(ixgbe_hwmon->device);
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goto err;
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}
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for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
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/*
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* Only create hwmon sysfs entries for sensors that have
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* meaningful data for.
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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 = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION);
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rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC);
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rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP);
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rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX);
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if (rc)
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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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ixgbe_sysfs_del_adapter(adapter);
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exit:
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return rc;
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}
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