1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007-2013 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
29 #include "e1000_82575.h"
32 #include <linux/module.h>
33 #include <linux/types.h>
34 #include <linux/sysfs.h>
35 #include <linux/kobject.h>
36 #include <linux/device.h>
37 #include <linux/netdevice.h>
38 #include <linux/hwmon.h>
39 #include <linux/pci.h>
41 #ifdef CONFIG_IGB_HWMON
42 static struct i2c_board_info i350_sensor_info = {
43 I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)),
46 /* hwmon callback functions */
47 static ssize_t igb_hwmon_show_location(struct device *dev,
48 struct device_attribute *attr,
51 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
53 return sprintf(buf, "loc%u\n",
54 igb_attr->sensor->location);
57 static ssize_t igb_hwmon_show_temp(struct device *dev,
58 struct device_attribute *attr,
61 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
65 /* reset the temp field */
66 igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw);
68 value = igb_attr->sensor->temp;
70 /* display millidegree */
73 return sprintf(buf, "%u\n", value);
76 static ssize_t igb_hwmon_show_cautionthresh(struct device *dev,
77 struct device_attribute *attr,
80 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
82 unsigned int value = igb_attr->sensor->caution_thresh;
84 /* display millidegree */
87 return sprintf(buf, "%u\n", value);
90 static ssize_t igb_hwmon_show_maxopthresh(struct device *dev,
91 struct device_attribute *attr,
94 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
96 unsigned int value = igb_attr->sensor->max_op_thresh;
98 /* display millidegree */
101 return sprintf(buf, "%u\n", value);
104 /* igb_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
105 * @ adapter: pointer to the adapter structure
106 * @ offset: offset in the eeprom sensor data table
107 * @ type: type of sensor data to display
109 * For each file we want in hwmon's sysfs interface we need a device_attribute
110 * This is included in our hwmon_attr struct that contains the references to
111 * the data structures we need to get the data to display.
113 static int igb_add_hwmon_attr(struct igb_adapter *adapter,
114 unsigned int offset, int type)
118 struct hwmon_attr *igb_attr;
120 n_attr = adapter->igb_hwmon_buff->n_hwmon;
121 igb_attr = &adapter->igb_hwmon_buff->hwmon_list[n_attr];
124 case IGB_HWMON_TYPE_LOC:
125 igb_attr->dev_attr.show = igb_hwmon_show_location;
126 snprintf(igb_attr->name, sizeof(igb_attr->name),
127 "temp%u_label", offset);
129 case IGB_HWMON_TYPE_TEMP:
130 igb_attr->dev_attr.show = igb_hwmon_show_temp;
131 snprintf(igb_attr->name, sizeof(igb_attr->name),
132 "temp%u_input", offset);
134 case IGB_HWMON_TYPE_CAUTION:
135 igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh;
136 snprintf(igb_attr->name, sizeof(igb_attr->name),
137 "temp%u_max", offset);
139 case IGB_HWMON_TYPE_MAX:
140 igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh;
141 snprintf(igb_attr->name, sizeof(igb_attr->name),
142 "temp%u_crit", offset);
149 /* These always the same regardless of type */
151 &adapter->hw.mac.thermal_sensor_data.sensor[offset];
152 igb_attr->hw = &adapter->hw;
153 igb_attr->dev_attr.store = NULL;
154 igb_attr->dev_attr.attr.mode = S_IRUGO;
155 igb_attr->dev_attr.attr.name = igb_attr->name;
156 sysfs_attr_init(&igb_attr->dev_attr.attr);
158 adapter->igb_hwmon_buff->attrs[n_attr] = &igb_attr->dev_attr.attr;
160 ++adapter->igb_hwmon_buff->n_hwmon;
165 static void igb_sysfs_del_adapter(struct igb_adapter *adapter)
169 /* called from igb_main.c */
170 void igb_sysfs_exit(struct igb_adapter *adapter)
172 igb_sysfs_del_adapter(adapter);
175 /* called from igb_main.c */
176 int igb_sysfs_init(struct igb_adapter *adapter)
178 struct hwmon_buff *igb_hwmon;
179 struct i2c_client *client;
180 struct device *hwmon_dev;
184 /* If this method isn't defined we don't support thermals */
185 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL)
188 /* Don't create thermal hwmon interface if no sensors present */
189 rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw));
193 igb_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*igb_hwmon),
199 adapter->igb_hwmon_buff = igb_hwmon;
201 for (i = 0; i < E1000_MAX_SENSORS; i++) {
203 /* Only create hwmon sysfs entries for sensors that have
206 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
209 /* Bail if any hwmon attr struct fails to initialize */
210 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION);
213 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC);
216 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP);
219 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX);
224 /* init i2c_client */
225 client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info);
226 if (client == NULL) {
227 dev_info(&adapter->pdev->dev,
228 "Failed to create new i2c device.\n");
232 adapter->i2c_client = client;
234 igb_hwmon->groups[0] = &igb_hwmon->group;
235 igb_hwmon->group.attrs = igb_hwmon->attrs;
237 hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
241 if (IS_ERR(hwmon_dev)) {
242 rc = PTR_ERR(hwmon_dev);
249 igb_sysfs_del_adapter(adapter);