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 /* hwmon callback functions */
43 static ssize_t
igb_hwmon_show_location(struct device
*dev
,
44 struct device_attribute
*attr
,
47 struct hwmon_attr
*igb_attr
= container_of(attr
, struct hwmon_attr
,
49 return sprintf(buf
, "loc%u\n",
50 igb_attr
->sensor
->location
);
53 static ssize_t
igb_hwmon_show_temp(struct device
*dev
,
54 struct device_attribute
*attr
,
57 struct hwmon_attr
*igb_attr
= container_of(attr
, struct hwmon_attr
,
61 /* reset the temp field */
62 igb_attr
->hw
->mac
.ops
.get_thermal_sensor_data(igb_attr
->hw
);
64 value
= igb_attr
->sensor
->temp
;
66 /* display millidegree */
69 return sprintf(buf
, "%u\n", value
);
72 static ssize_t
igb_hwmon_show_cautionthresh(struct device
*dev
,
73 struct device_attribute
*attr
,
76 struct hwmon_attr
*igb_attr
= container_of(attr
, struct hwmon_attr
,
78 unsigned int value
= igb_attr
->sensor
->caution_thresh
;
80 /* display millidegree */
83 return sprintf(buf
, "%u\n", value
);
86 static ssize_t
igb_hwmon_show_maxopthresh(struct device
*dev
,
87 struct device_attribute
*attr
,
90 struct hwmon_attr
*igb_attr
= container_of(attr
, struct hwmon_attr
,
92 unsigned int value
= igb_attr
->sensor
->max_op_thresh
;
94 /* display millidegree */
97 return sprintf(buf
, "%u\n", value
);
100 /* igb_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 igb_add_hwmon_attr(struct igb_adapter
*adapter
,
110 unsigned int offset
, int type
) {
113 struct hwmon_attr
*igb_attr
;
115 n_attr
= adapter
->igb_hwmon_buff
.n_hwmon
;
116 igb_attr
= &adapter
->igb_hwmon_buff
.hwmon_list
[n_attr
];
119 case IGB_HWMON_TYPE_LOC
:
120 igb_attr
->dev_attr
.show
= igb_hwmon_show_location
;
121 snprintf(igb_attr
->name
, sizeof(igb_attr
->name
),
122 "temp%u_label", offset
);
124 case IGB_HWMON_TYPE_TEMP
:
125 igb_attr
->dev_attr
.show
= igb_hwmon_show_temp
;
126 snprintf(igb_attr
->name
, sizeof(igb_attr
->name
),
127 "temp%u_input", offset
);
129 case IGB_HWMON_TYPE_CAUTION
:
130 igb_attr
->dev_attr
.show
= igb_hwmon_show_cautionthresh
;
131 snprintf(igb_attr
->name
, sizeof(igb_attr
->name
),
132 "temp%u_max", offset
);
134 case IGB_HWMON_TYPE_MAX
:
135 igb_attr
->dev_attr
.show
= igb_hwmon_show_maxopthresh
;
136 snprintf(igb_attr
->name
, sizeof(igb_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 igb_attr
->hw
= &adapter
->hw
;
148 igb_attr
->dev_attr
.store
= NULL
;
149 igb_attr
->dev_attr
.attr
.mode
= S_IRUGO
;
150 igb_attr
->dev_attr
.attr
.name
= igb_attr
->name
;
151 sysfs_attr_init(&igb_attr
->dev_attr
.attr
);
152 rc
= device_create_file(&adapter
->pdev
->dev
,
153 &igb_attr
->dev_attr
);
155 ++adapter
->igb_hwmon_buff
.n_hwmon
;
160 static void igb_sysfs_del_adapter(struct igb_adapter
*adapter
)
167 for (i
= 0; i
< adapter
->igb_hwmon_buff
.n_hwmon
; i
++) {
168 device_remove_file(&adapter
->pdev
->dev
,
169 &adapter
->igb_hwmon_buff
.hwmon_list
[i
].dev_attr
);
172 kfree(adapter
->igb_hwmon_buff
.hwmon_list
);
174 if (adapter
->igb_hwmon_buff
.device
)
175 hwmon_device_unregister(adapter
->igb_hwmon_buff
.device
);
178 /* called from igb_main.c */
179 void igb_sysfs_exit(struct igb_adapter
*adapter
)
181 igb_sysfs_del_adapter(adapter
);
184 /* called from igb_main.c */
185 int igb_sysfs_init(struct igb_adapter
*adapter
)
187 struct hwmon_buff
*igb_hwmon
= &adapter
->igb_hwmon_buff
;
192 /* If this method isn't defined we don't support thermals */
193 if (adapter
->hw
.mac
.ops
.init_thermal_sensor_thresh
== NULL
)
196 /* Don't create thermal hwmon interface if no sensors present */
197 rc
= (adapter
->hw
.mac
.ops
.init_thermal_sensor_thresh(&adapter
->hw
));
201 /* Allocation space for max attributes
202 * max num sensors * values (loc, temp, max, caution)
204 n_attrs
= E1000_MAX_SENSORS
* 4;
205 igb_hwmon
->hwmon_list
= kcalloc(n_attrs
, sizeof(struct hwmon_attr
),
207 if (!igb_hwmon
->hwmon_list
) {
212 igb_hwmon
->device
= hwmon_device_register(&adapter
->pdev
->dev
);
213 if (IS_ERR(igb_hwmon
->device
)) {
214 rc
= PTR_ERR(igb_hwmon
->device
);
218 for (i
= 0; i
< E1000_MAX_SENSORS
; i
++) {
220 /* Only create hwmon sysfs entries for sensors that have
223 if (adapter
->hw
.mac
.thermal_sensor_data
.sensor
[i
].location
== 0)
226 /* Bail if any hwmon attr struct fails to initialize */
227 rc
= igb_add_hwmon_attr(adapter
, i
, IGB_HWMON_TYPE_CAUTION
);
228 rc
|= igb_add_hwmon_attr(adapter
, i
, IGB_HWMON_TYPE_LOC
);
229 rc
|= igb_add_hwmon_attr(adapter
, i
, IGB_HWMON_TYPE_TEMP
);
230 rc
|= igb_add_hwmon_attr(adapter
, i
, IGB_HWMON_TYPE_MAX
);
238 igb_sysfs_del_adapter(adapter
);