fp@2685: /* Intel(R) Gigabit Ethernet Linux driver
fp@2685:  * Copyright(c) 2007-2014 Intel Corporation.
fp@2685:  *
fp@2685:  * This program is free software; you can redistribute it and/or modify it
fp@2685:  * under the terms and conditions of the GNU General Public License,
fp@2685:  * version 2, as published by the Free Software Foundation.
fp@2685:  *
fp@2685:  * This program is distributed in the hope it will be useful, but WITHOUT
fp@2685:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
fp@2685:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
fp@2685:  * more details.
fp@2685:  *
fp@2685:  * You should have received a copy of the GNU General Public License along with
fp@2685:  * this program; if not, see <http://www.gnu.org/licenses/>.
fp@2685:  *
fp@2685:  * The full GNU General Public License is included in this distribution in
fp@2685:  * the file called "COPYING".
fp@2685:  *
fp@2685:  * Contact Information:
fp@2685:  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
fp@2685:  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
fp@2685:  */
fp@2685: 
fp@2685: #include "igb.h"
fp@2685: #include "e1000_82575.h"
fp@2685: #include "e1000_hw.h"
fp@2685: 
fp@2685: #include <linux/module.h>
fp@2685: #include <linux/types.h>
fp@2685: #include <linux/sysfs.h>
fp@2685: #include <linux/kobject.h>
fp@2685: #include <linux/device.h>
fp@2685: #include <linux/netdevice.h>
fp@2685: #include <linux/hwmon.h>
fp@2685: #include <linux/pci.h>
fp@2685: 
fp@2685: #ifdef CONFIG_IGB_HWMON
fp@2685: static struct i2c_board_info i350_sensor_info = {
fp@2685: 	I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)),
fp@2685: };
fp@2685: 
fp@2685: /* hwmon callback functions */
fp@2685: static ssize_t igb_hwmon_show_location(struct device *dev,
fp@2685: 				       struct device_attribute *attr,
fp@2685: 				       char *buf)
fp@2685: {
fp@2685: 	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
fp@2685: 						   dev_attr);
fp@2685: 	return sprintf(buf, "loc%u\n",
fp@2685: 		       igb_attr->sensor->location);
fp@2685: }
fp@2685: 
fp@2685: static ssize_t igb_hwmon_show_temp(struct device *dev,
fp@2685: 				   struct device_attribute *attr,
fp@2685: 				   char *buf)
fp@2685: {
fp@2685: 	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
fp@2685: 						   dev_attr);
fp@2685: 	unsigned int value;
fp@2685: 
fp@2685: 	/* reset the temp field */
fp@2685: 	igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw);
fp@2685: 
fp@2685: 	value = igb_attr->sensor->temp;
fp@2685: 
fp@2685: 	/* display millidegree */
fp@2685: 	value *= 1000;
fp@2685: 
fp@2685: 	return sprintf(buf, "%u\n", value);
fp@2685: }
fp@2685: 
fp@2685: static ssize_t igb_hwmon_show_cautionthresh(struct device *dev,
fp@2685: 					    struct device_attribute *attr,
fp@2685: 					    char *buf)
fp@2685: {
fp@2685: 	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
fp@2685: 						   dev_attr);
fp@2685: 	unsigned int value = igb_attr->sensor->caution_thresh;
fp@2685: 
fp@2685: 	/* display millidegree */
fp@2685: 	value *= 1000;
fp@2685: 
fp@2685: 	return sprintf(buf, "%u\n", value);
fp@2685: }
fp@2685: 
fp@2685: static ssize_t igb_hwmon_show_maxopthresh(struct device *dev,
fp@2685: 					  struct device_attribute *attr,
fp@2685: 					  char *buf)
fp@2685: {
fp@2685: 	struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
fp@2685: 						   dev_attr);
fp@2685: 	unsigned int value = igb_attr->sensor->max_op_thresh;
fp@2685: 
fp@2685: 	/* display millidegree */
fp@2685: 	value *= 1000;
fp@2685: 
fp@2685: 	return sprintf(buf, "%u\n", value);
fp@2685: }
fp@2685: 
fp@2685: /* igb_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
fp@2685:  * @ adapter: pointer to the adapter structure
fp@2685:  * @ offset: offset in the eeprom sensor data table
fp@2685:  * @ type: type of sensor data to display
fp@2685:  *
fp@2685:  * For each file we want in hwmon's sysfs interface we need a device_attribute
fp@2685:  * This is included in our hwmon_attr struct that contains the references to
fp@2685:  * the data structures we need to get the data to display.
fp@2685:  */
fp@2685: static int igb_add_hwmon_attr(struct igb_adapter *adapter,
fp@2685: 			      unsigned int offset, int type)
fp@2685: {
fp@2685: 	int rc;
fp@2685: 	unsigned int n_attr;
fp@2685: 	struct hwmon_attr *igb_attr;
fp@2685: 
fp@2685: 	n_attr = adapter->igb_hwmon_buff->n_hwmon;
fp@2685: 	igb_attr = &adapter->igb_hwmon_buff->hwmon_list[n_attr];
fp@2685: 
fp@2685: 	switch (type) {
fp@2685: 	case IGB_HWMON_TYPE_LOC:
fp@2685: 		igb_attr->dev_attr.show = igb_hwmon_show_location;
fp@2685: 		snprintf(igb_attr->name, sizeof(igb_attr->name),
fp@2685: 			 "temp%u_label", offset + 1);
fp@2685: 		break;
fp@2685: 	case IGB_HWMON_TYPE_TEMP:
fp@2685: 		igb_attr->dev_attr.show = igb_hwmon_show_temp;
fp@2685: 		snprintf(igb_attr->name, sizeof(igb_attr->name),
fp@2685: 			 "temp%u_input", offset + 1);
fp@2685: 		break;
fp@2685: 	case IGB_HWMON_TYPE_CAUTION:
fp@2685: 		igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh;
fp@2685: 		snprintf(igb_attr->name, sizeof(igb_attr->name),
fp@2685: 			 "temp%u_max", offset + 1);
fp@2685: 		break;
fp@2685: 	case IGB_HWMON_TYPE_MAX:
fp@2685: 		igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh;
fp@2685: 		snprintf(igb_attr->name, sizeof(igb_attr->name),
fp@2685: 			 "temp%u_crit", offset + 1);
fp@2685: 		break;
fp@2685: 	default:
fp@2685: 		rc = -EPERM;
fp@2685: 		return rc;
fp@2685: 	}
fp@2685: 
fp@2685: 	/* These always the same regardless of type */
fp@2685: 	igb_attr->sensor =
fp@2685: 		&adapter->hw.mac.thermal_sensor_data.sensor[offset];
fp@2685: 	igb_attr->hw = &adapter->hw;
fp@2685: 	igb_attr->dev_attr.store = NULL;
fp@2685: 	igb_attr->dev_attr.attr.mode = S_IRUGO;
fp@2685: 	igb_attr->dev_attr.attr.name = igb_attr->name;
fp@2685: 	sysfs_attr_init(&igb_attr->dev_attr.attr);
fp@2685: 
fp@2685: 	adapter->igb_hwmon_buff->attrs[n_attr] = &igb_attr->dev_attr.attr;
fp@2685: 
fp@2685: 	++adapter->igb_hwmon_buff->n_hwmon;
fp@2685: 
fp@2685: 	return 0;
fp@2685: }
fp@2685: 
fp@2685: static void igb_sysfs_del_adapter(struct igb_adapter *adapter)
fp@2685: {
fp@2685: }
fp@2685: 
fp@2685: /* called from igb_main.c */
fp@2685: void igb_sysfs_exit(struct igb_adapter *adapter)
fp@2685: {
fp@2685: 	igb_sysfs_del_adapter(adapter);
fp@2685: }
fp@2685: 
fp@2685: /* called from igb_main.c */
fp@2685: int igb_sysfs_init(struct igb_adapter *adapter)
fp@2685: {
fp@2685: 	struct hwmon_buff *igb_hwmon;
fp@2685: 	struct i2c_client *client;
fp@2685: 	struct device *hwmon_dev;
fp@2685: 	unsigned int i;
fp@2685: 	int rc = 0;
fp@2685: 
fp@2685: 	/* If this method isn't defined we don't support thermals */
fp@2685: 	if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL)
fp@2685: 		goto exit;
fp@2685: 
fp@2685: 	/* Don't create thermal hwmon interface if no sensors present */
fp@2685: 	rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw));
fp@2685: 	if (rc)
fp@2685: 		goto exit;
fp@2685: 
fp@2685: 	igb_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*igb_hwmon),
fp@2685: 				 GFP_KERNEL);
fp@2685: 	if (!igb_hwmon) {
fp@2685: 		rc = -ENOMEM;
fp@2685: 		goto exit;
fp@2685: 	}
fp@2685: 	adapter->igb_hwmon_buff = igb_hwmon;
fp@2685: 
fp@2685: 	for (i = 0; i < E1000_MAX_SENSORS; i++) {
fp@2685: 
fp@2685: 		/* Only create hwmon sysfs entries for sensors that have
fp@2685: 		 * meaningful data.
fp@2685: 		 */
fp@2685: 		if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
fp@2685: 			continue;
fp@2685: 
fp@2685: 		/* Bail if any hwmon attr struct fails to initialize */
fp@2685: 		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION);
fp@2685: 		if (rc)
fp@2685: 			goto exit;
fp@2685: 		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC);
fp@2685: 		if (rc)
fp@2685: 			goto exit;
fp@2685: 		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP);
fp@2685: 		if (rc)
fp@2685: 			goto exit;
fp@2685: 		rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX);
fp@2685: 		if (rc)
fp@2685: 			goto exit;
fp@2685: 	}
fp@2685: 
fp@2685: 	/* init i2c_client */
fp@2685: 	client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info);
fp@2685: 	if (client == NULL) {
fp@2685: 		dev_info(&adapter->pdev->dev,
fp@2685: 			 "Failed to create new i2c device.\n");
fp@2685: 		rc = -ENODEV;
fp@2685: 		goto exit;
fp@2685: 	}
fp@2685: 	adapter->i2c_client = client;
fp@2685: 
fp@2685: 	igb_hwmon->groups[0] = &igb_hwmon->group;
fp@2685: 	igb_hwmon->group.attrs = igb_hwmon->attrs;
fp@2685: 
fp@2685: 	hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
fp@2685: 							   client->name,
fp@2685: 							   igb_hwmon,
fp@2685: 							   igb_hwmon->groups);
fp@2685: 	if (IS_ERR(hwmon_dev)) {
fp@2685: 		rc = PTR_ERR(hwmon_dev);
fp@2685: 		goto err;
fp@2685: 	}
fp@2685: 
fp@2685: 	goto exit;
fp@2685: 
fp@2685: err:
fp@2685: 	igb_sysfs_del_adapter(adapter);
fp@2685: exit:
fp@2685: 	return rc;
fp@2685: }
fp@2685: #endif