--- /dev/null
+/*******************************************************************************
+
+ Intel 10 Gigabit PCI Express Linux driver
+ Copyright(c) 1999 - 2013 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ Linux NICS <linux.nics@intel.com>
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include "ixgbe.h"
+#include "ixgbe_common.h"
+#include "ixgbe_type.h"
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/sysfs.h>
+#include <linux/kobject.h>
+#include <linux/device.h>
+#include <linux/netdevice.h>
+#include <linux/hwmon.h>
+
+/* hwmon callback functions */
+static ssize_t ixgbe_hwmon_show_location(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
+ dev_attr);
+ return sprintf(buf, "loc%u\n",
+ ixgbe_attr->sensor->location);
+}
+
+static ssize_t ixgbe_hwmon_show_temp(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
+ dev_attr);
+ unsigned int value;
+
+ /* reset the temp field */
+ ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
+
+ value = ixgbe_attr->sensor->temp;
+
+ /* display millidegree */
+ value *= 1000;
+
+ return sprintf(buf, "%u\n", value);
+}
+
+static ssize_t ixgbe_hwmon_show_cautionthresh(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
+ dev_attr);
+ unsigned int value = ixgbe_attr->sensor->caution_thresh;
+
+ /* display millidegree */
+ value *= 1000;
+
+ return sprintf(buf, "%u\n", value);
+}
+
+static ssize_t ixgbe_hwmon_show_maxopthresh(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
+ dev_attr);
+ unsigned int value = ixgbe_attr->sensor->max_op_thresh;
+
+ /* display millidegree */
+ value *= 1000;
+
+ return sprintf(buf, "%u\n", value);
+}
+
+/**
+ * ixgbe_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
+ * @adapter: pointer to the adapter structure
+ * @offset: offset in the eeprom sensor data table
+ * @type: type of sensor data to display
+ *
+ * For each file we want in hwmon's sysfs interface we need a device_attribute
+ * This is included in our hwmon_attr struct that contains the references to
+ * the data structures we need to get the data to display.
+ */
+static int ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter,
+ unsigned int offset, int type) {
+ int rc;
+ unsigned int n_attr;
+ struct hwmon_attr *ixgbe_attr;
+
+ n_attr = adapter->ixgbe_hwmon_buff->n_hwmon;
+ ixgbe_attr = &adapter->ixgbe_hwmon_buff->hwmon_list[n_attr];
+
+ switch (type) {
+ case IXGBE_HWMON_TYPE_LOC:
+ ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_location;
+ snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
+ "temp%u_label", offset + 1);
+ break;
+ case IXGBE_HWMON_TYPE_TEMP:
+ ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_temp;
+ snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
+ "temp%u_input", offset + 1);
+ break;
+ case IXGBE_HWMON_TYPE_CAUTION:
+ ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_cautionthresh;
+ snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
+ "temp%u_max", offset + 1);
+ break;
+ case IXGBE_HWMON_TYPE_MAX:
+ ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_maxopthresh;
+ snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
+ "temp%u_crit", offset + 1);
+ break;
+ default:
+ rc = -EPERM;
+ return rc;
+ }
+
+ /* These always the same regardless of type */
+ ixgbe_attr->sensor =
+ &adapter->hw.mac.thermal_sensor_data.sensor[offset];
+ ixgbe_attr->hw = &adapter->hw;
+ ixgbe_attr->dev_attr.store = NULL;
+ ixgbe_attr->dev_attr.attr.mode = S_IRUGO;
+ ixgbe_attr->dev_attr.attr.name = ixgbe_attr->name;
+ sysfs_attr_init(&ixgbe_attr->dev_attr.attr);
+
+ adapter->ixgbe_hwmon_buff->attrs[n_attr] = &ixgbe_attr->dev_attr.attr;
+
+ ++adapter->ixgbe_hwmon_buff->n_hwmon;
+
+ return 0;
+}
+
+static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
+{
+}
+
+/* called from ixgbe_main.c */
+void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
+{
+ ixgbe_sysfs_del_adapter(adapter);
+}
+
+/* called from ixgbe_main.c */
+int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
+{
+ struct hwmon_buff *ixgbe_hwmon;
+ struct device *hwmon_dev;
+ unsigned int i;
+ int rc = 0;
+
+ /* If this method isn't defined we don't support thermals */
+ if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
+ goto exit;
+ }
+
+ /* Don't create thermal hwmon interface if no sensors present */
+ if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
+ goto exit;
+
+ ixgbe_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*ixgbe_hwmon),
+ GFP_KERNEL);
+ if (ixgbe_hwmon == NULL) {
+ rc = -ENOMEM;
+ goto exit;
+ }
+ adapter->ixgbe_hwmon_buff = ixgbe_hwmon;
+
+ for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
+ /*
+ * Only create hwmon sysfs entries for sensors that have
+ * meaningful data for.
+ */
+ if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
+ continue;
+
+ /* Bail if any hwmon attr struct fails to initialize */
+ rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION);
+ if (rc)
+ goto exit;
+ rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC);
+ if (rc)
+ goto exit;
+ rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP);
+ if (rc)
+ goto exit;
+ rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX);
+ if (rc)
+ goto exit;
+ }
+
+ ixgbe_hwmon->groups[0] = &ixgbe_hwmon->group;
+ ixgbe_hwmon->group.attrs = ixgbe_hwmon->attrs;
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
+ "ixgbe",
+ ixgbe_hwmon,
+ ixgbe_hwmon->groups);
+ if (IS_ERR(hwmon_dev))
+ rc = PTR_ERR(hwmon_dev);
+exit:
+ return rc;
+}
+
Code Review / kvmfornfv.git / blobdiff