Loading...
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 1999 - 2018 Intel Corporation. */
3
4#include "ixgbe.h"
5#include "ixgbe_common.h"
6#include "ixgbe_type.h"
7
8#include <linux/module.h>
9#include <linux/types.h>
10#include <linux/sysfs.h>
11#include <linux/kobject.h>
12#include <linux/device.h>
13#include <linux/netdevice.h>
14#include <linux/hwmon.h>
15
16/* hwmon callback functions */
17static ssize_t ixgbe_hwmon_show_location(struct device *dev,
18 struct device_attribute *attr,
19 char *buf)
20{
21 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
22 dev_attr);
23 return sprintf(buf, "loc%u\n",
24 ixgbe_attr->sensor->location);
25}
26
27static ssize_t ixgbe_hwmon_show_temp(struct device *dev,
28 struct device_attribute *attr,
29 char *buf)
30{
31 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
32 dev_attr);
33 unsigned int value;
34
35 /* reset the temp field */
36 ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
37
38 value = ixgbe_attr->sensor->temp;
39
40 /* display millidegree */
41 value *= 1000;
42
43 return sprintf(buf, "%u\n", value);
44}
45
46static ssize_t ixgbe_hwmon_show_cautionthresh(struct device *dev,
47 struct device_attribute *attr,
48 char *buf)
49{
50 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
51 dev_attr);
52 unsigned int value = ixgbe_attr->sensor->caution_thresh;
53
54 /* display millidegree */
55 value *= 1000;
56
57 return sprintf(buf, "%u\n", value);
58}
59
60static ssize_t ixgbe_hwmon_show_maxopthresh(struct device *dev,
61 struct device_attribute *attr,
62 char *buf)
63{
64 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
65 dev_attr);
66 unsigned int value = ixgbe_attr->sensor->max_op_thresh;
67
68 /* display millidegree */
69 value *= 1000;
70
71 return sprintf(buf, "%u\n", value);
72}
73
74/**
75 * ixgbe_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file.
76 * @adapter: pointer to the adapter structure
77 * @offset: offset in the eeprom sensor data table
78 * @type: type of sensor data to display
79 *
80 * For each file we want in hwmon's sysfs interface we need a device_attribute
81 * This is included in our hwmon_attr struct that contains the references to
82 * the data structures we need to get the data to display.
83 */
84static int ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter,
85 unsigned int offset, int type) {
86 int rc;
87 unsigned int n_attr;
88 struct hwmon_attr *ixgbe_attr;
89
90 n_attr = adapter->ixgbe_hwmon_buff->n_hwmon;
91 ixgbe_attr = &adapter->ixgbe_hwmon_buff->hwmon_list[n_attr];
92
93 switch (type) {
94 case IXGBE_HWMON_TYPE_LOC:
95 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_location;
96 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
97 "temp%u_label", offset + 1);
98 break;
99 case IXGBE_HWMON_TYPE_TEMP:
100 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_temp;
101 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
102 "temp%u_input", offset + 1);
103 break;
104 case IXGBE_HWMON_TYPE_CAUTION:
105 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_cautionthresh;
106 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
107 "temp%u_max", offset + 1);
108 break;
109 case IXGBE_HWMON_TYPE_MAX:
110 ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_maxopthresh;
111 snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name),
112 "temp%u_crit", offset + 1);
113 break;
114 default:
115 rc = -EPERM;
116 return rc;
117 }
118
119 /* These always the same regardless of type */
120 ixgbe_attr->sensor =
121 &adapter->hw.mac.thermal_sensor_data.sensor[offset];
122 ixgbe_attr->hw = &adapter->hw;
123 ixgbe_attr->dev_attr.store = NULL;
124 ixgbe_attr->dev_attr.attr.mode = 0444;
125 ixgbe_attr->dev_attr.attr.name = ixgbe_attr->name;
126 sysfs_attr_init(&ixgbe_attr->dev_attr.attr);
127
128 adapter->ixgbe_hwmon_buff->attrs[n_attr] = &ixgbe_attr->dev_attr.attr;
129
130 ++adapter->ixgbe_hwmon_buff->n_hwmon;
131
132 return 0;
133}
134
135static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
136{
137}
138
139/* called from ixgbe_main.c */
140void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
141{
142 ixgbe_sysfs_del_adapter(adapter);
143}
144
145/* called from ixgbe_main.c */
146int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
147{
148 struct hwmon_buff *ixgbe_hwmon;
149 struct device *hwmon_dev;
150 unsigned int i;
151 int rc = 0;
152
153 /* If this method isn't defined we don't support thermals */
154 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
155 goto exit;
156 }
157
158 /* Don't create thermal hwmon interface if no sensors present */
159 if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
160 goto exit;
161
162 ixgbe_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*ixgbe_hwmon),
163 GFP_KERNEL);
164 if (ixgbe_hwmon == NULL) {
165 rc = -ENOMEM;
166 goto exit;
167 }
168 adapter->ixgbe_hwmon_buff = ixgbe_hwmon;
169
170 for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
171 /*
172 * Only create hwmon sysfs entries for sensors that have
173 * meaningful data for.
174 */
175 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
176 continue;
177
178 /* Bail if any hwmon attr struct fails to initialize */
179 rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION);
180 if (rc)
181 goto exit;
182 rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC);
183 if (rc)
184 goto exit;
185 rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP);
186 if (rc)
187 goto exit;
188 rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX);
189 if (rc)
190 goto exit;
191 }
192
193 ixgbe_hwmon->groups[0] = &ixgbe_hwmon->group;
194 ixgbe_hwmon->group.attrs = ixgbe_hwmon->attrs;
195
196 hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev,
197 "ixgbe",
198 ixgbe_hwmon,
199 ixgbe_hwmon->groups);
200 if (IS_ERR(hwmon_dev))
201 rc = PTR_ERR(hwmon_dev);
202exit:
203 return rc;
204}
205
1/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2012 Intel Corporation.
5
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.
9
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
13 more details.
14
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.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
28#include "ixgbe.h"
29#include "ixgbe_common.h"
30#include "ixgbe_type.h"
31
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
40#ifdef CONFIG_IXGBE_HWMON
41/* hwmon callback functions */
42static ssize_t ixgbe_hwmon_show_location(struct device *dev,
43 struct device_attribute *attr,
44 char *buf)
45{
46 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
47 dev_attr);
48 return sprintf(buf, "loc%u\n",
49 ixgbe_attr->sensor->location);
50}
51
52static ssize_t ixgbe_hwmon_show_temp(struct device *dev,
53 struct device_attribute *attr,
54 char *buf)
55{
56 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
57 dev_attr);
58 unsigned int value;
59
60 /* reset the temp field */
61 ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
62
63 value = ixgbe_attr->sensor->temp;
64
65 /* display millidegree */
66 value *= 1000;
67
68 return sprintf(buf, "%u\n", value);
69}
70
71static ssize_t ixgbe_hwmon_show_cautionthresh(struct device *dev,
72 struct device_attribute *attr,
73 char *buf)
74{
75 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
76 dev_attr);
77 unsigned int value = ixgbe_attr->sensor->caution_thresh;
78
79 /* display millidegree */
80 value *= 1000;
81
82 return sprintf(buf, "%u\n", value);
83}
84
85static ssize_t ixgbe_hwmon_show_maxopthresh(struct device *dev,
86 struct device_attribute *attr,
87 char *buf)
88{
89 struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr,
90 dev_attr);
91 unsigned int value = ixgbe_attr->sensor->max_op_thresh;
92
93 /* display millidegree */
94 value *= 1000;
95
96 return sprintf(buf, "%u\n", value);
97}
98
99/*
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
104 *
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.
108 */
109static int ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter,
110 unsigned int offset, int type) {
111 int rc;
112 unsigned int n_attr;
113 struct hwmon_attr *ixgbe_attr;
114
115 n_attr = adapter->ixgbe_hwmon_buff.n_hwmon;
116 ixgbe_attr = &adapter->ixgbe_hwmon_buff.hwmon_list[n_attr];
117
118 switch (type) {
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);
123 break;
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);
128 break;
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);
133 break;
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);
138 break;
139 default:
140 rc = -EPERM;
141 return rc;
142 }
143
144 /* These always the same regardless of type */
145 ixgbe_attr->sensor =
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;
151
152 rc = device_create_file(&adapter->pdev->dev,
153 &ixgbe_attr->dev_attr);
154
155 if (rc == 0)
156 ++adapter->ixgbe_hwmon_buff.n_hwmon;
157
158 return rc;
159}
160
161static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
162{
163 int i;
164
165 if (adapter == NULL)
166 return;
167
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);
171 }
172
173 kfree(adapter->ixgbe_hwmon_buff.hwmon_list);
174
175 if (adapter->ixgbe_hwmon_buff.device)
176 hwmon_device_unregister(adapter->ixgbe_hwmon_buff.device);
177}
178
179/* called from ixgbe_main.c */
180void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
181{
182 ixgbe_sysfs_del_adapter(adapter);
183}
184
185/* called from ixgbe_main.c */
186int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
187{
188 struct hwmon_buff *ixgbe_hwmon = &adapter->ixgbe_hwmon_buff;
189 unsigned int i;
190 int n_attrs;
191 int rc = 0;
192
193 /* If this method isn't defined we don't support thermals */
194 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
195 goto exit;
196 }
197
198 /* Don't create thermal hwmon interface if no sensors present */
199 if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
200 goto exit;
201
202 /*
203 * Allocation space for max attributs
204 * max num sensors * values (loc, temp, max, caution)
205 */
206 n_attrs = IXGBE_MAX_SENSORS * 4;
207 ixgbe_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr),
208 GFP_KERNEL);
209 if (!ixgbe_hwmon->hwmon_list) {
210 rc = -ENOMEM;
211 goto err;
212 }
213
214 ixgbe_hwmon->device = hwmon_device_register(&adapter->pdev->dev);
215 if (IS_ERR(ixgbe_hwmon->device)) {
216 rc = PTR_ERR(ixgbe_hwmon->device);
217 goto err;
218 }
219
220 for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
221 /*
222 * Only create hwmon sysfs entries for sensors that have
223 * meaningful data for.
224 */
225 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
226 continue;
227
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);
233 if (rc)
234 goto err;
235 }
236
237 goto exit;
238
239err:
240 ixgbe_sysfs_del_adapter(adapter);
241exit:
242 return rc;
243}
244#endif /* CONFIG_IXGBE_HWMON */
245