1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2012 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 "ixgbe_common.h"
30 #include "ixgbe_type.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>
40 #ifdef CONFIG_IXGBE_HWMON
41 /* hwmon callback functions */
42 static ssize_t ixgbe_hwmon_show_location(struct device *dev,
43 struct device_attribute *attr,
46 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
48 return sprintf(buf, "loc%u\n",
49 ixgbe_attr->sensor->location);
52 static ssize_t ixgbe_hwmon_show_temp(struct device *dev,
53 struct device_attribute *attr,
56 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
60 /* reset the temp field */
61 ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
63 value = ixgbe_attr->sensor->temp;
65 /* display millidegree */
68 return sprintf(buf, "%u\n", value);
71 static ssize_t ixgbe_hwmon_show_cautionthresh(struct device *dev,
72 struct device_attribute *attr,
75 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
77 unsigned int value = ixgbe_attr->sensor->caution_thresh;
79 /* display millidegree */
82 return sprintf(buf, "%u\n", value);
85 static ssize_t ixgbe_hwmon_show_maxopthresh(struct device *dev,
86 struct device_attribute *attr,
89 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
91 unsigned int value = ixgbe_attr->sensor->max_op_thresh;
93 /* display millidegree */
96 return sprintf(buf, "%u\n", value);
100 * ixgbe_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
101 * @ adapter: pointer to the adapter structure
102 * @ offset: offset in the eeprom sensor data table
103 * @ type: type of sensor data to display
105 * For each file we want in hwmon's sysfs interface we need a device_attribute
106 * This is included in our hwmon_attr struct that contains the references to
107 * the data structures we need to get the data to display.
109 static int ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter,
110 unsigned int offset, int type) {
113 struct hwmon_attr *ixgbe_attr;
115 n_attr = adapter->ixgbe_hwmon_buff.n_hwmon;
116 ixgbe_attr = &adapter->ixgbe_hwmon_buff.hwmon_list[n_attr];
119 case IXGBE_HWMON_TYPE_LOC:
120 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_location;
121 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
122 "temp%u_label", offset);
124 case IXGBE_HWMON_TYPE_TEMP:
125 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_temp;
126 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
127 "temp%u_input", offset);
129 case IXGBE_HWMON_TYPE_CAUTION:
130 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_cautionthresh;
131 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
132 "temp%u_max", offset);
134 case IXGBE_HWMON_TYPE_MAX:
135 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_maxopthresh;
136 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
137 "temp%u_crit", offset);
144 /* These always the same regardless of type */
146 &adapter->hw.mac.thermal_sensor_data.sensor[offset];
147 ixgbe_attr->hw = &adapter->hw;
148 ixgbe_attr->dev_attr.store = NULL;
149 ixgbe_attr->dev_attr.attr.mode = S_IRUGO;
150 ixgbe_attr->dev_attr.attr.name = ixgbe_attr->name;
152 rc = device_create_file(&adapter->pdev->dev,
153 &ixgbe_attr->dev_attr);
156 ++adapter->ixgbe_hwmon_buff.n_hwmon;
161 static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
168 for (i = 0; i < adapter->ixgbe_hwmon_buff.n_hwmon; i++) {
169 device_remove_file(&adapter->pdev->dev,
170 &adapter->ixgbe_hwmon_buff.hwmon_list[i].dev_attr);
173 kfree(adapter->ixgbe_hwmon_buff.hwmon_list);
175 if (adapter->ixgbe_hwmon_buff.device)
176 hwmon_device_unregister(adapter->ixgbe_hwmon_buff.device);
179 /* called from ixgbe_main.c */
180 void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
182 ixgbe_sysfs_del_adapter(adapter);
185 /* called from ixgbe_main.c */
186 int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
188 struct hwmon_buff *ixgbe_hwmon = &adapter->ixgbe_hwmon_buff;
193 /* If this method isn't defined we don't support thermals */
194 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
198 /* Don't create thermal hwmon interface if no sensors present */
199 if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
203 * Allocation space for max attributs
204 * max num sensors * values (loc, temp, max, caution)
206 n_attrs = IXGBE_MAX_SENSORS * 4;
207 ixgbe_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr),
209 if (!ixgbe_hwmon->hwmon_list) {
214 ixgbe_hwmon->device = hwmon_device_register(&adapter->pdev->dev);
215 if (IS_ERR(ixgbe_hwmon->device)) {
216 rc = PTR_ERR(ixgbe_hwmon->device);
220 for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
222 * Only create hwmon sysfs entries for sensors that have
223 * meaningful data for.
225 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
228 /* Bail if any hwmon attr struct fails to initialize */
229 rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION);
230 rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC);
231 rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP);
232 rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX);
240 ixgbe_sysfs_del_adapter(adapter);
244 #endif /* CONFIG_IXGBE_HWMON */