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3ca8bc6d DS |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
434c5e39 | 4 | Copyright(c) 1999 - 2013 Intel Corporation. |
3ca8bc6d DS |
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: | |
b89aae71 | 23 | Linux NICS <linux.nics@intel.com> |
3ca8bc6d DS |
24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "ixgbe.h" | |
30 | #include "ixgbe_common.h" | |
31 | #include "ixgbe_type.h" | |
32 | ||
33 | #include <linux/module.h> | |
34 | #include <linux/types.h> | |
35 | #include <linux/sysfs.h> | |
36 | #include <linux/kobject.h> | |
37 | #include <linux/device.h> | |
38 | #include <linux/netdevice.h> | |
39 | #include <linux/hwmon.h> | |
40 | ||
3ca8bc6d DS |
41 | /* hwmon callback functions */ |
42 | static 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 | ||
52 | static 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 | ||
71 | static 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 | ||
85 | static 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 | ||
49ce9c2c | 99 | /** |
3ca8bc6d | 100 | * ixgbe_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file. |
49ce9c2c BH |
101 | * @adapter: pointer to the adapter structure |
102 | * @offset: offset in the eeprom sensor data table | |
103 | * @type: type of sensor data to display | |
3ca8bc6d DS |
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 | */ | |
109 | static 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 | ||
03b77d81 GR |
115 | n_attr = adapter->ixgbe_hwmon_buff->n_hwmon; |
116 | ixgbe_attr = &adapter->ixgbe_hwmon_buff->hwmon_list[n_attr]; | |
3ca8bc6d DS |
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), | |
22dd81c5 | 122 | "temp%u_label", offset + 1); |
3ca8bc6d DS |
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), | |
22dd81c5 | 127 | "temp%u_input", offset + 1); |
3ca8bc6d DS |
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), | |
22dd81c5 | 132 | "temp%u_max", offset + 1); |
3ca8bc6d DS |
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), | |
22dd81c5 | 137 | "temp%u_crit", offset + 1); |
3ca8bc6d DS |
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; | |
03b77d81 | 151 | sysfs_attr_init(&ixgbe_attr->dev_attr.attr); |
3ca8bc6d | 152 | |
03b77d81 | 153 | adapter->ixgbe_hwmon_buff->attrs[n_attr] = &ixgbe_attr->dev_attr.attr; |
3ca8bc6d | 154 | |
03b77d81 | 155 | ++adapter->ixgbe_hwmon_buff->n_hwmon; |
3ca8bc6d | 156 | |
03b77d81 | 157 | return 0; |
3ca8bc6d | 158 | } |
3ca8bc6d DS |
159 | |
160 | static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter) | |
161 | { | |
3ca8bc6d DS |
162 | } |
163 | ||
164 | /* called from ixgbe_main.c */ | |
165 | void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter) | |
166 | { | |
167 | ixgbe_sysfs_del_adapter(adapter); | |
168 | } | |
169 | ||
170 | /* called from ixgbe_main.c */ | |
171 | int ixgbe_sysfs_init(struct ixgbe_adapter *adapter) | |
172 | { | |
03b77d81 GR |
173 | struct hwmon_buff *ixgbe_hwmon; |
174 | struct device *hwmon_dev; | |
3ca8bc6d | 175 | unsigned int i; |
3ca8bc6d DS |
176 | int rc = 0; |
177 | ||
3ca8bc6d DS |
178 | /* If this method isn't defined we don't support thermals */ |
179 | if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) { | |
1210982b | 180 | goto exit; |
3ca8bc6d DS |
181 | } |
182 | ||
183 | /* Don't create thermal hwmon interface if no sensors present */ | |
1210982b DS |
184 | if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw)) |
185 | goto exit; | |
3ca8bc6d | 186 | |
03b77d81 GR |
187 | ixgbe_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*ixgbe_hwmon), |
188 | GFP_KERNEL); | |
189 | if (ixgbe_hwmon == NULL) { | |
3ca8bc6d | 190 | rc = -ENOMEM; |
03b77d81 | 191 | goto exit; |
3ca8bc6d | 192 | } |
03b77d81 | 193 | adapter->ixgbe_hwmon_buff = ixgbe_hwmon; |
3ca8bc6d DS |
194 | |
195 | for (i = 0; i < IXGBE_MAX_SENSORS; i++) { | |
196 | /* | |
197 | * Only create hwmon sysfs entries for sensors that have | |
198 | * meaningful data for. | |
199 | */ | |
200 | if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0) | |
201 | continue; | |
202 | ||
203 | /* Bail if any hwmon attr struct fails to initialize */ | |
204 | rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION); | |
3ca8bc6d | 205 | if (rc) |
03b77d81 GR |
206 | goto exit; |
207 | rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC); | |
208 | if (rc) | |
209 | goto exit; | |
210 | rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP); | |
211 | if (rc) | |
212 | goto exit; | |
213 | rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX); | |
214 | if (rc) | |
215 | goto exit; | |
3ca8bc6d | 216 | } |
3ca8bc6d | 217 | |
03b77d81 GR |
218 | ixgbe_hwmon->groups[0] = &ixgbe_hwmon->group; |
219 | ixgbe_hwmon->group.attrs = ixgbe_hwmon->attrs; | |
3ca8bc6d | 220 | |
03b77d81 GR |
221 | hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev, |
222 | "ixgbe", | |
223 | ixgbe_hwmon, | |
224 | ixgbe_hwmon->groups); | |
225 | if (IS_ERR(hwmon_dev)) | |
226 | rc = PTR_ERR(hwmon_dev); | |
3ca8bc6d DS |
227 | exit: |
228 | return rc; | |
229 | } | |
230 |