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3ca8bc6d DS |
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 | ||
3ca8bc6d DS |
40 | /* hwmon callback functions */ |
41 | static ssize_t ixgbe_hwmon_show_location(struct device *dev, | |
42 | struct device_attribute *attr, | |
43 | char *buf) | |
44 | { | |
45 | struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr, | |
46 | dev_attr); | |
47 | return sprintf(buf, "loc%u\n", | |
48 | ixgbe_attr->sensor->location); | |
49 | } | |
50 | ||
51 | static ssize_t ixgbe_hwmon_show_temp(struct device *dev, | |
52 | struct device_attribute *attr, | |
53 | char *buf) | |
54 | { | |
55 | struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr, | |
56 | dev_attr); | |
57 | unsigned int value; | |
58 | ||
59 | /* reset the temp field */ | |
60 | ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw); | |
61 | ||
62 | value = ixgbe_attr->sensor->temp; | |
63 | ||
64 | /* display millidegree */ | |
65 | value *= 1000; | |
66 | ||
67 | return sprintf(buf, "%u\n", value); | |
68 | } | |
69 | ||
70 | static ssize_t ixgbe_hwmon_show_cautionthresh(struct device *dev, | |
71 | struct device_attribute *attr, | |
72 | char *buf) | |
73 | { | |
74 | struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr, | |
75 | dev_attr); | |
76 | unsigned int value = ixgbe_attr->sensor->caution_thresh; | |
77 | ||
78 | /* display millidegree */ | |
79 | value *= 1000; | |
80 | ||
81 | return sprintf(buf, "%u\n", value); | |
82 | } | |
83 | ||
84 | static ssize_t ixgbe_hwmon_show_maxopthresh(struct device *dev, | |
85 | struct device_attribute *attr, | |
86 | char *buf) | |
87 | { | |
88 | struct hwmon_attr *ixgbe_attr = container_of(attr, struct hwmon_attr, | |
89 | dev_attr); | |
90 | unsigned int value = ixgbe_attr->sensor->max_op_thresh; | |
91 | ||
92 | /* display millidegree */ | |
93 | value *= 1000; | |
94 | ||
95 | return sprintf(buf, "%u\n", value); | |
96 | } | |
97 | ||
49ce9c2c | 98 | /** |
3ca8bc6d | 99 | * ixgbe_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file. |
49ce9c2c BH |
100 | * @adapter: pointer to the adapter structure |
101 | * @offset: offset in the eeprom sensor data table | |
102 | * @type: type of sensor data to display | |
3ca8bc6d DS |
103 | * |
104 | * For each file we want in hwmon's sysfs interface we need a device_attribute | |
105 | * This is included in our hwmon_attr struct that contains the references to | |
106 | * the data structures we need to get the data to display. | |
107 | */ | |
108 | static int ixgbe_add_hwmon_attr(struct ixgbe_adapter *adapter, | |
109 | unsigned int offset, int type) { | |
110 | int rc; | |
111 | unsigned int n_attr; | |
112 | struct hwmon_attr *ixgbe_attr; | |
113 | ||
114 | n_attr = adapter->ixgbe_hwmon_buff.n_hwmon; | |
115 | ixgbe_attr = &adapter->ixgbe_hwmon_buff.hwmon_list[n_attr]; | |
116 | ||
117 | switch (type) { | |
118 | case IXGBE_HWMON_TYPE_LOC: | |
119 | ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_location; | |
120 | snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name), | |
121 | "temp%u_label", offset); | |
122 | break; | |
123 | case IXGBE_HWMON_TYPE_TEMP: | |
124 | ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_temp; | |
125 | snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name), | |
126 | "temp%u_input", offset); | |
127 | break; | |
128 | case IXGBE_HWMON_TYPE_CAUTION: | |
129 | ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_cautionthresh; | |
130 | snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name), | |
131 | "temp%u_max", offset); | |
132 | break; | |
133 | case IXGBE_HWMON_TYPE_MAX: | |
134 | ixgbe_attr->dev_attr.show = ixgbe_hwmon_show_maxopthresh; | |
135 | snprintf(ixgbe_attr->name, sizeof(ixgbe_attr->name), | |
136 | "temp%u_crit", offset); | |
137 | break; | |
138 | default: | |
139 | rc = -EPERM; | |
140 | return rc; | |
141 | } | |
142 | ||
143 | /* These always the same regardless of type */ | |
144 | ixgbe_attr->sensor = | |
145 | &adapter->hw.mac.thermal_sensor_data.sensor[offset]; | |
146 | ixgbe_attr->hw = &adapter->hw; | |
147 | ixgbe_attr->dev_attr.store = NULL; | |
148 | ixgbe_attr->dev_attr.attr.mode = S_IRUGO; | |
149 | ixgbe_attr->dev_attr.attr.name = ixgbe_attr->name; | |
150 | ||
151 | rc = device_create_file(&adapter->pdev->dev, | |
152 | &ixgbe_attr->dev_attr); | |
153 | ||
154 | if (rc == 0) | |
155 | ++adapter->ixgbe_hwmon_buff.n_hwmon; | |
156 | ||
157 | return rc; | |
158 | } | |
3ca8bc6d DS |
159 | |
160 | static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter) | |
161 | { | |
3ca8bc6d | 162 | int i; |
3ca8bc6d DS |
163 | |
164 | if (adapter == NULL) | |
165 | return; | |
3ca8bc6d DS |
166 | |
167 | for (i = 0; i < adapter->ixgbe_hwmon_buff.n_hwmon; i++) { | |
168 | device_remove_file(&adapter->pdev->dev, | |
169 | &adapter->ixgbe_hwmon_buff.hwmon_list[i].dev_attr); | |
170 | } | |
171 | ||
172 | kfree(adapter->ixgbe_hwmon_buff.hwmon_list); | |
173 | ||
174 | if (adapter->ixgbe_hwmon_buff.device) | |
175 | hwmon_device_unregister(adapter->ixgbe_hwmon_buff.device); | |
3ca8bc6d DS |
176 | } |
177 | ||
178 | /* called from ixgbe_main.c */ | |
179 | void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter) | |
180 | { | |
181 | ixgbe_sysfs_del_adapter(adapter); | |
182 | } | |
183 | ||
184 | /* called from ixgbe_main.c */ | |
185 | int ixgbe_sysfs_init(struct ixgbe_adapter *adapter) | |
186 | { | |
3ca8bc6d DS |
187 | struct hwmon_buff *ixgbe_hwmon = &adapter->ixgbe_hwmon_buff; |
188 | unsigned int i; | |
189 | int n_attrs; | |
3ca8bc6d DS |
190 | int rc = 0; |
191 | ||
3ca8bc6d DS |
192 | /* If this method isn't defined we don't support thermals */ |
193 | if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) { | |
1210982b | 194 | goto exit; |
3ca8bc6d DS |
195 | } |
196 | ||
197 | /* Don't create thermal hwmon interface if no sensors present */ | |
1210982b DS |
198 | if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw)) |
199 | goto exit; | |
3ca8bc6d DS |
200 | |
201 | /* | |
202 | * Allocation space for max attributs | |
203 | * max num sensors * values (loc, temp, max, caution) | |
204 | */ | |
205 | n_attrs = IXGBE_MAX_SENSORS * 4; | |
206 | ixgbe_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr), | |
207 | GFP_KERNEL); | |
208 | if (!ixgbe_hwmon->hwmon_list) { | |
209 | rc = -ENOMEM; | |
210 | goto err; | |
211 | } | |
212 | ||
213 | ixgbe_hwmon->device = hwmon_device_register(&adapter->pdev->dev); | |
214 | if (IS_ERR(ixgbe_hwmon->device)) { | |
215 | rc = PTR_ERR(ixgbe_hwmon->device); | |
216 | goto err; | |
217 | } | |
218 | ||
219 | for (i = 0; i < IXGBE_MAX_SENSORS; i++) { | |
220 | /* | |
221 | * Only create hwmon sysfs entries for sensors that have | |
222 | * meaningful data for. | |
223 | */ | |
224 | if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0) | |
225 | continue; | |
226 | ||
227 | /* Bail if any hwmon attr struct fails to initialize */ | |
228 | rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION); | |
229 | rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_LOC); | |
230 | rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_TEMP); | |
231 | rc |= ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_MAX); | |
232 | if (rc) | |
233 | goto err; | |
234 | } | |
3ca8bc6d DS |
235 | |
236 | goto exit; | |
237 | ||
238 | err: | |
239 | ixgbe_sysfs_del_adapter(adapter); | |
240 | exit: | |
241 | return rc; | |
242 | } | |
243 |