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 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) {
117 struct hwmon_attr *igb_attr;
119 n_attr = adapter->igb_hwmon_buff.n_hwmon;
120 igb_attr = &adapter->igb_hwmon_buff.hwmon_list[n_attr];
123 case IGB_HWMON_TYPE_LOC:
124 igb_attr->dev_attr.show = igb_hwmon_show_location;
125 snprintf(igb_attr->name, sizeof(igb_attr->name),
126 "temp%u_label", offset);
128 case IGB_HWMON_TYPE_TEMP:
129 igb_attr->dev_attr.show = igb_hwmon_show_temp;
130 snprintf(igb_attr->name, sizeof(igb_attr->name),
131 "temp%u_input", offset);
133 case IGB_HWMON_TYPE_CAUTION:
134 igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh;
135 snprintf(igb_attr->name, sizeof(igb_attr->name),
136 "temp%u_max", offset);
138 case IGB_HWMON_TYPE_MAX:
139 igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh;
140 snprintf(igb_attr->name, sizeof(igb_attr->name),
141 "temp%u_crit", offset);
148 /* These always the same regardless of type */
150 &adapter->hw.mac.thermal_sensor_data.sensor[offset];
151 igb_attr->hw = &adapter->hw;
152 igb_attr->dev_attr.store = NULL;
153 igb_attr->dev_attr.attr.mode = S_IRUGO;
154 igb_attr->dev_attr.attr.name = igb_attr->name;
155 sysfs_attr_init(&igb_attr->dev_attr.attr);
156 rc = device_create_file(&adapter->pdev->dev,
157 &igb_attr->dev_attr);
159 ++adapter->igb_hwmon_buff.n_hwmon;
164 static void igb_sysfs_del_adapter(struct igb_adapter *adapter)
171 for (i = 0; i < adapter->igb_hwmon_buff.n_hwmon; i++) {
172 device_remove_file(&adapter->pdev->dev,
173 &adapter->igb_hwmon_buff.hwmon_list[i].dev_attr);
176 kfree(adapter->igb_hwmon_buff.hwmon_list);
178 if (adapter->igb_hwmon_buff.device)
179 hwmon_device_unregister(adapter->igb_hwmon_buff.device);
182 /* called from igb_main.c */
183 void igb_sysfs_exit(struct igb_adapter *adapter)
185 igb_sysfs_del_adapter(adapter);
188 /* called from igb_main.c */
189 int igb_sysfs_init(struct igb_adapter *adapter)
191 struct hwmon_buff *igb_hwmon = &adapter->igb_hwmon_buff;
195 struct i2c_client *client = NULL;
197 /* If this method isn't defined we don't support thermals */
198 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL)
201 /* Don't create thermal hwmon interface if no sensors present */
202 rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw));
206 /* init i2c_client */
207 client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info);
208 if (client == NULL) {
209 dev_info(&adapter->pdev->dev,
210 "Failed to create new i2c device..\n");
213 adapter->i2c_client = client;
215 /* Allocation space for max attributes
216 * max num sensors * values (loc, temp, max, caution)
218 n_attrs = E1000_MAX_SENSORS * 4;
219 igb_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr),
221 if (!igb_hwmon->hwmon_list) {
226 igb_hwmon->device = hwmon_device_register(&adapter->pdev->dev);
227 if (IS_ERR(igb_hwmon->device)) {
228 rc = PTR_ERR(igb_hwmon->device);
232 for (i = 0; i < E1000_MAX_SENSORS; i++) {
234 /* Only create hwmon sysfs entries for sensors that have
237 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
240 /* Bail if any hwmon attr struct fails to initialize */
241 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION);
242 rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC);
243 rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP);
244 rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX);
252 igb_sysfs_del_adapter(adapter);