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 "LICENSE.GPL".
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 HAVE_I2C_SUPPORT
42 static struct i2c_board_info i350_sensor_info = {
43 I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)),
45 #endif /* HAVE_I2C_SUPPORT */
47 /* hwmon callback functions */
48 static ssize_t igb_hwmon_show_location(struct device *dev,
49 struct device_attribute *attr,
52 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
54 return sprintf(buf, "loc%u\n",
55 igb_attr->sensor->location);
58 static ssize_t igb_hwmon_show_temp(struct device *dev,
59 struct device_attribute *attr,
62 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
66 /* reset the temp field */
67 igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw);
69 value = igb_attr->sensor->temp;
71 /* display millidegree */
74 return sprintf(buf, "%u\n", value);
77 static ssize_t igb_hwmon_show_cautionthresh(struct device *dev,
78 struct device_attribute *attr,
81 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
83 unsigned int value = igb_attr->sensor->caution_thresh;
85 /* display millidegree */
88 return sprintf(buf, "%u\n", value);
91 static ssize_t igb_hwmon_show_maxopthresh(struct device *dev,
92 struct device_attribute *attr,
95 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr,
97 unsigned int value = igb_attr->sensor->max_op_thresh;
99 /* display millidegree */
102 return sprintf(buf, "%u\n", value);
105 /* igb_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
106 * @ adapter: pointer to the adapter structure
107 * @ offset: offset in the eeprom sensor data table
108 * @ type: type of sensor data to display
110 * For each file we want in hwmon's sysfs interface we need a device_attribute
111 * This is included in our hwmon_attr struct that contains the references to
112 * the data structures we need to get the data to display.
114 static int igb_add_hwmon_attr(struct igb_adapter *adapter,
115 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);
157 rc = device_create_file(&adapter->pdev->dev,
158 &igb_attr->dev_attr);
160 ++adapter->igb_hwmon_buff.n_hwmon;
165 static void igb_sysfs_del_adapter(struct igb_adapter *adapter)
172 for (i = 0; i < adapter->igb_hwmon_buff.n_hwmon; i++) {
173 device_remove_file(&adapter->pdev->dev,
174 &adapter->igb_hwmon_buff.hwmon_list[i].dev_attr);
177 kfree(adapter->igb_hwmon_buff.hwmon_list);
179 if (adapter->igb_hwmon_buff.device)
180 hwmon_device_unregister(adapter->igb_hwmon_buff.device);
183 /* called from igb_main.c */
184 void igb_sysfs_exit(struct igb_adapter *adapter)
186 igb_sysfs_del_adapter(adapter);
189 /* called from igb_main.c */
190 int igb_sysfs_init(struct igb_adapter *adapter)
192 struct hwmon_buff *igb_hwmon = &adapter->igb_hwmon_buff;
196 #ifdef HAVE_I2C_SUPPORT
197 struct i2c_client *client = NULL;
198 #endif /* HAVE_I2C_SUPPORT */
200 /* If this method isn't defined we don't support thermals */
201 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL)
204 /* Don't create thermal hwmon interface if no sensors present */
205 rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw));
208 #ifdef HAVE_I2C_SUPPORT
209 /* init i2c_client */
210 client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info);
211 if (client == NULL) {
212 dev_info(&adapter->pdev->dev,
213 "Failed to create new i2c device..\n");
216 adapter->i2c_client = client;
217 #endif /* HAVE_I2C_SUPPORT */
219 /* Allocation space for max attributes
220 * max num sensors * values (loc, temp, max, caution)
222 n_attrs = E1000_MAX_SENSORS * 4;
223 igb_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr),
225 if (!igb_hwmon->hwmon_list) {
230 igb_hwmon->device = hwmon_device_register(&adapter->pdev->dev);
231 if (IS_ERR(igb_hwmon->device)) {
232 rc = PTR_ERR(igb_hwmon->device);
236 for (i = 0; i < E1000_MAX_SENSORS; i++) {
238 /* Only create hwmon sysfs entries for sensors that have
241 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
244 /* Bail if any hwmon attr struct fails to initialize */
245 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION);
246 rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC);
247 rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP);
248 rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX);
256 igb_sysfs_del_adapter(adapter);
260 #endif /* IGB_HWMON */