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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
41
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
61 ixgbe_attr->hw->mac.ops.get_thermal_sensor_data(ixgbe_attr->hw);
62
63 value = ixgbe_attr->sensor->temp;
64
65
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
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
94 value *= 1000;
95
96 return sprintf(buf, "%u\n", value);
97}
98
99
100
101
102
103
104
105
106
107
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 + 1);
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 + 1);
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 + 1);
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 + 1);
138 break;
139 default:
140 rc = -EPERM;
141 return rc;
142 }
143
144
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 sysfs_attr_init(&ixgbe_attr->dev_attr.attr);
152
153 adapter->ixgbe_hwmon_buff->attrs[n_attr] = &ixgbe_attr->dev_attr.attr;
154
155 ++adapter->ixgbe_hwmon_buff->n_hwmon;
156
157 return 0;
158}
159
160static void ixgbe_sysfs_del_adapter(struct ixgbe_adapter *adapter)
161{
162}
163
164
165void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter)
166{
167 ixgbe_sysfs_del_adapter(adapter);
168}
169
170
171int ixgbe_sysfs_init(struct ixgbe_adapter *adapter)
172{
173 struct hwmon_buff *ixgbe_hwmon;
174 struct device *hwmon_dev;
175 unsigned int i;
176 int rc = 0;
177
178
179 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) {
180 goto exit;
181 }
182
183
184 if (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw))
185 goto exit;
186
187 ixgbe_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*ixgbe_hwmon),
188 GFP_KERNEL);
189 if (ixgbe_hwmon == NULL) {
190 rc = -ENOMEM;
191 goto exit;
192 }
193 adapter->ixgbe_hwmon_buff = ixgbe_hwmon;
194
195 for (i = 0; i < IXGBE_MAX_SENSORS; i++) {
196
197
198
199
200 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0)
201 continue;
202
203
204 rc = ixgbe_add_hwmon_attr(adapter, i, IXGBE_HWMON_TYPE_CAUTION);
205 if (rc)
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;
216 }
217
218 ixgbe_hwmon->groups[0] = &ixgbe_hwmon->group;
219 ixgbe_hwmon->group.attrs = ixgbe_hwmon->attrs;
220
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);
227exit:
228 return rc;
229}
230
231