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>
41 * This file provides a sysfs interface to export information from the
42 * driver. The information presented is READ-ONLY.
44 #ifdef CONFIG_IXGBE_HWMON
46 /* hwmon callback functions */
47 static ssize_t
ixgbe_hwmon_show_location(struct device
*dev
,
48 struct device_attribute
*attr
,
51 struct hwmon_attr
*ixgbe_attr
= container_of(attr
, struct hwmon_attr
,
53 return sprintf(buf
, "loc%u\n",
54 ixgbe_attr
->sensor
->location
);
57 static ssize_t
ixgbe_hwmon_show_temp(struct device
*dev
,
58 struct device_attribute
*attr
,
61 struct hwmon_attr
*ixgbe_attr
= container_of(attr
, struct hwmon_attr
,
65 /* reset the temp field */
66 ixgbe_attr
->hw
->mac
.ops
.get_thermal_sensor_data(ixgbe_attr
->hw
);
68 value
= ixgbe_attr
->sensor
->temp
;
70 /* display millidegree */
73 return sprintf(buf
, "%u\n", value
);
76 static ssize_t
ixgbe_hwmon_show_cautionthresh(struct device
*dev
,
77 struct device_attribute
*attr
,
80 struct hwmon_attr
*ixgbe_attr
= container_of(attr
, struct hwmon_attr
,
82 unsigned int value
= ixgbe_attr
->sensor
->caution_thresh
;
84 /* display millidegree */
87 return sprintf(buf
, "%u\n", value
);
90 static ssize_t
ixgbe_hwmon_show_maxopthresh(struct device
*dev
,
91 struct device_attribute
*attr
,
94 struct hwmon_attr
*ixgbe_attr
= container_of(attr
, struct hwmon_attr
,
96 unsigned int value
= ixgbe_attr
->sensor
->max_op_thresh
;
98 /* display millidegree */
101 return sprintf(buf
, "%u\n", value
);
105 * ixgbe_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 ixgbe_add_hwmon_attr(struct ixgbe_adapter
*adapter
,
115 unsigned int offset
, int type
) {
118 struct hwmon_attr
*ixgbe_attr
;
120 n_attr
= adapter
->ixgbe_hwmon_buff
.n_hwmon
;
121 ixgbe_attr
= &adapter
->ixgbe_hwmon_buff
.hwmon_list
[n_attr
];
124 case IXGBE_HWMON_TYPE_LOC
:
125 ixgbe_attr
->dev_attr
.show
= ixgbe_hwmon_show_location
;
126 snprintf(ixgbe_attr
->name
, sizeof(ixgbe_attr
->name
),
127 "temp%u_label", offset
);
129 case IXGBE_HWMON_TYPE_TEMP
:
130 ixgbe_attr
->dev_attr
.show
= ixgbe_hwmon_show_temp
;
131 snprintf(ixgbe_attr
->name
, sizeof(ixgbe_attr
->name
),
132 "temp%u_input", offset
);
134 case IXGBE_HWMON_TYPE_CAUTION
:
135 ixgbe_attr
->dev_attr
.show
= ixgbe_hwmon_show_cautionthresh
;
136 snprintf(ixgbe_attr
->name
, sizeof(ixgbe_attr
->name
),
137 "temp%u_max", offset
);
139 case IXGBE_HWMON_TYPE_MAX
:
140 ixgbe_attr
->dev_attr
.show
= ixgbe_hwmon_show_maxopthresh
;
141 snprintf(ixgbe_attr
->name
, sizeof(ixgbe_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 ixgbe_attr
->hw
= &adapter
->hw
;
153 ixgbe_attr
->dev_attr
.store
= NULL
;
154 ixgbe_attr
->dev_attr
.attr
.mode
= S_IRUGO
;
155 ixgbe_attr
->dev_attr
.attr
.name
= ixgbe_attr
->name
;
157 rc
= device_create_file(&adapter
->pdev
->dev
,
158 &ixgbe_attr
->dev_attr
);
161 ++adapter
->ixgbe_hwmon_buff
.n_hwmon
;
165 #endif /* CONFIG_IXGBE_HWMON */
167 static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter
*adapter
)
169 #ifdef CONFIG_IXGBE_HWMON
171 #endif /* CONFIG_IXGBE_HWMON */
175 #ifdef CONFIG_IXGBE_HWMON
177 for (i
= 0; i
< adapter
->ixgbe_hwmon_buff
.n_hwmon
; i
++) {
178 device_remove_file(&adapter
->pdev
->dev
,
179 &adapter
->ixgbe_hwmon_buff
.hwmon_list
[i
].dev_attr
);
182 kfree(adapter
->ixgbe_hwmon_buff
.hwmon_list
);
184 if (adapter
->ixgbe_hwmon_buff
.device
)
185 hwmon_device_unregister(adapter
->ixgbe_hwmon_buff
.device
);
186 #endif /* CONFIG_IXGBE_HWMON */
188 if (adapter
->info_kobj
!= NULL
) {
189 kobject_put(adapter
->info_kobj
);
190 adapter
->info_kobj
= NULL
;
194 /* called from ixgbe_main.c */
195 void ixgbe_sysfs_exit(struct ixgbe_adapter
*adapter
)
197 ixgbe_sysfs_del_adapter(adapter
);
200 /* called from ixgbe_main.c */
201 int ixgbe_sysfs_init(struct ixgbe_adapter
*adapter
)
203 #ifdef CONFIG_IXGBE_HWMON
204 struct hwmon_buff
*ixgbe_hwmon
= &adapter
->ixgbe_hwmon_buff
;
207 #endif /* CONFIG_IXGBE_HWMON */
208 struct net_device
*netdev
= adapter
->netdev
;
211 /* create info kobj and attribute listings in kobj */
212 adapter
->info_kobj
= kobject_create_and_add("info", &netdev
->dev
.kobj
);
213 if (adapter
->info_kobj
== NULL
) {
218 #ifdef CONFIG_IXGBE_HWMON
219 /* If this method isn't defined we don't support thermals */
220 if (adapter
->hw
.mac
.ops
.init_thermal_sensor_thresh
== NULL
) {
225 /* Don't create thermal hwmon interface if no sensors present */
226 rc
= adapter
->hw
.mac
.ops
.init_thermal_sensor_thresh(&adapter
->hw
);
231 * Allocation space for max attributs
232 * max num sensors * values (loc, temp, max, caution)
234 n_attrs
= IXGBE_MAX_SENSORS
* 4;
235 ixgbe_hwmon
->hwmon_list
= kcalloc(n_attrs
, sizeof(struct hwmon_attr
),
237 if (!ixgbe_hwmon
->hwmon_list
) {
242 ixgbe_hwmon
->device
= hwmon_device_register(&adapter
->pdev
->dev
);
243 if (IS_ERR(ixgbe_hwmon
->device
)) {
244 rc
= PTR_ERR(ixgbe_hwmon
->device
);
248 for (i
= 0; i
< IXGBE_MAX_SENSORS
; i
++) {
250 * Only create hwmon sysfs entries for sensors that have
251 * meaningful data for.
253 if (adapter
->hw
.mac
.thermal_sensor_data
.sensor
[i
].location
== 0)
256 /* Bail if any hwmon attr struct fails to initialize */
257 rc
= ixgbe_add_hwmon_attr(adapter
, i
, IXGBE_HWMON_TYPE_CAUTION
);
258 rc
|= ixgbe_add_hwmon_attr(adapter
, i
, IXGBE_HWMON_TYPE_LOC
);
259 rc
|= ixgbe_add_hwmon_attr(adapter
, i
, IXGBE_HWMON_TYPE_TEMP
);
260 rc
|= ixgbe_add_hwmon_attr(adapter
, i
, IXGBE_HWMON_TYPE_MAX
);
264 #endif /* CONFIG_IXGBE_HWMON */
269 ixgbe_sysfs_del_adapter(adapter
);