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1 /* Intel(R) Gigabit Ethernet Linux driver |
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2 * Copyright(c) 2007-2014 Intel Corporation. |
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3 * |
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4 * This program is free software; you can redistribute it and/or modify it |
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5 * under the terms and conditions of the GNU General Public License, |
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6 * version 2, as published by the Free Software Foundation. |
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7 * |
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8 * This program is distributed in the hope it will be useful, but WITHOUT |
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9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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11 * more details. |
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12 * |
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13 * You should have received a copy of the GNU General Public License along with |
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14 * this program; if not, see <http://www.gnu.org/licenses/>. |
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15 * |
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16 * The full GNU General Public License is included in this distribution in |
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17 * the file called "COPYING". |
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18 * |
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19 * Contact Information: |
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20 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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21 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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22 */ |
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23 |
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24 #include "igb-3.18-ethercat.h" |
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25 #include "e1000_82575-3.18-ethercat.h" |
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26 #include "e1000_hw-3.18-ethercat.h" |
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27 |
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28 #include <linux/module.h> |
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29 #include <linux/types.h> |
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30 #include <linux/sysfs.h> |
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31 #include <linux/kobject.h> |
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32 #include <linux/device.h> |
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33 #include <linux/netdevice.h> |
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34 #include <linux/hwmon.h> |
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35 #include <linux/pci.h> |
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36 |
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37 #ifdef CONFIG_IGB_HWMON |
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38 static struct i2c_board_info i350_sensor_info = { |
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39 I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)), |
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40 }; |
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41 |
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42 /* hwmon callback functions */ |
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43 static ssize_t igb_hwmon_show_location(struct device *dev, |
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44 struct device_attribute *attr, |
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45 char *buf) |
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46 { |
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47 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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48 dev_attr); |
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49 return sprintf(buf, "loc%u\n", |
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50 igb_attr->sensor->location); |
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51 } |
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52 |
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53 static ssize_t igb_hwmon_show_temp(struct device *dev, |
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54 struct device_attribute *attr, |
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55 char *buf) |
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56 { |
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57 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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58 dev_attr); |
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59 unsigned int value; |
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60 |
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61 /* reset the temp field */ |
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62 igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw); |
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63 |
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64 value = igb_attr->sensor->temp; |
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65 |
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66 /* display millidegree */ |
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67 value *= 1000; |
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68 |
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69 return sprintf(buf, "%u\n", value); |
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70 } |
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71 |
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72 static ssize_t igb_hwmon_show_cautionthresh(struct device *dev, |
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73 struct device_attribute *attr, |
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74 char *buf) |
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75 { |
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76 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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77 dev_attr); |
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78 unsigned int value = igb_attr->sensor->caution_thresh; |
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79 |
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80 /* display millidegree */ |
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81 value *= 1000; |
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82 |
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83 return sprintf(buf, "%u\n", value); |
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84 } |
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85 |
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86 static ssize_t igb_hwmon_show_maxopthresh(struct device *dev, |
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87 struct device_attribute *attr, |
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88 char *buf) |
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89 { |
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90 struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
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91 dev_attr); |
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92 unsigned int value = igb_attr->sensor->max_op_thresh; |
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93 |
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94 /* display millidegree */ |
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95 value *= 1000; |
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96 |
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97 return sprintf(buf, "%u\n", value); |
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98 } |
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99 |
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100 /* igb_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file. |
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101 * @ adapter: pointer to the adapter structure |
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102 * @ offset: offset in the eeprom sensor data table |
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103 * @ type: type of sensor data to display |
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104 * |
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105 * For each file we want in hwmon's sysfs interface we need a device_attribute |
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106 * This is included in our hwmon_attr struct that contains the references to |
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107 * the data structures we need to get the data to display. |
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108 */ |
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109 static int igb_add_hwmon_attr(struct igb_adapter *adapter, |
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110 unsigned int offset, int type) |
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111 { |
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112 int rc; |
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113 unsigned int n_attr; |
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114 struct hwmon_attr *igb_attr; |
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115 |
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116 n_attr = adapter->igb_hwmon_buff->n_hwmon; |
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117 igb_attr = &adapter->igb_hwmon_buff->hwmon_list[n_attr]; |
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118 |
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119 switch (type) { |
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120 case IGB_HWMON_TYPE_LOC: |
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121 igb_attr->dev_attr.show = igb_hwmon_show_location; |
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122 snprintf(igb_attr->name, sizeof(igb_attr->name), |
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123 "temp%u_label", offset + 1); |
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124 break; |
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125 case IGB_HWMON_TYPE_TEMP: |
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126 igb_attr->dev_attr.show = igb_hwmon_show_temp; |
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127 snprintf(igb_attr->name, sizeof(igb_attr->name), |
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128 "temp%u_input", offset + 1); |
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129 break; |
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130 case IGB_HWMON_TYPE_CAUTION: |
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131 igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh; |
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132 snprintf(igb_attr->name, sizeof(igb_attr->name), |
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133 "temp%u_max", offset + 1); |
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134 break; |
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135 case IGB_HWMON_TYPE_MAX: |
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136 igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh; |
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137 snprintf(igb_attr->name, sizeof(igb_attr->name), |
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138 "temp%u_crit", offset + 1); |
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139 break; |
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140 default: |
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141 rc = -EPERM; |
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142 return rc; |
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143 } |
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144 |
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145 /* These always the same regardless of type */ |
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146 igb_attr->sensor = |
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147 &adapter->hw.mac.thermal_sensor_data.sensor[offset]; |
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148 igb_attr->hw = &adapter->hw; |
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149 igb_attr->dev_attr.store = NULL; |
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150 igb_attr->dev_attr.attr.mode = S_IRUGO; |
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151 igb_attr->dev_attr.attr.name = igb_attr->name; |
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152 sysfs_attr_init(&igb_attr->dev_attr.attr); |
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153 |
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154 adapter->igb_hwmon_buff->attrs[n_attr] = &igb_attr->dev_attr.attr; |
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155 |
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156 ++adapter->igb_hwmon_buff->n_hwmon; |
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157 |
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158 return 0; |
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159 } |
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160 |
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161 static void igb_sysfs_del_adapter(struct igb_adapter *adapter) |
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162 { |
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163 } |
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164 |
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165 /* called from igb_main.c */ |
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166 void igb_sysfs_exit(struct igb_adapter *adapter) |
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167 { |
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168 igb_sysfs_del_adapter(adapter); |
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169 } |
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170 |
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171 /* called from igb_main.c */ |
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172 int igb_sysfs_init(struct igb_adapter *adapter) |
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173 { |
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174 struct hwmon_buff *igb_hwmon; |
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175 struct i2c_client *client; |
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176 struct device *hwmon_dev; |
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177 unsigned int i; |
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178 int rc = 0; |
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179 |
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180 /* If this method isn't defined we don't support thermals */ |
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181 if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) |
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182 goto exit; |
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183 |
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184 /* Don't create thermal hwmon interface if no sensors present */ |
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185 rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw)); |
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186 if (rc) |
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187 goto exit; |
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188 |
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189 igb_hwmon = devm_kzalloc(&adapter->pdev->dev, sizeof(*igb_hwmon), |
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190 GFP_KERNEL); |
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191 if (!igb_hwmon) { |
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192 rc = -ENOMEM; |
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193 goto exit; |
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194 } |
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195 adapter->igb_hwmon_buff = igb_hwmon; |
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196 |
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197 for (i = 0; i < E1000_MAX_SENSORS; i++) { |
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198 |
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199 /* Only create hwmon sysfs entries for sensors that have |
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200 * meaningful data. |
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201 */ |
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202 if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0) |
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203 continue; |
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204 |
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205 /* Bail if any hwmon attr struct fails to initialize */ |
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206 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION); |
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207 if (rc) |
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208 goto exit; |
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209 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC); |
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210 if (rc) |
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211 goto exit; |
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212 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP); |
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213 if (rc) |
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214 goto exit; |
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215 rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX); |
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216 if (rc) |
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217 goto exit; |
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218 } |
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219 |
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220 /* init i2c_client */ |
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221 client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info); |
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222 if (client == NULL) { |
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223 dev_info(&adapter->pdev->dev, |
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224 "Failed to create new i2c device.\n"); |
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225 rc = -ENODEV; |
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226 goto exit; |
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227 } |
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228 adapter->i2c_client = client; |
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229 |
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230 igb_hwmon->groups[0] = &igb_hwmon->group; |
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231 igb_hwmon->group.attrs = igb_hwmon->attrs; |
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232 |
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233 hwmon_dev = devm_hwmon_device_register_with_groups(&adapter->pdev->dev, |
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234 client->name, |
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235 igb_hwmon, |
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236 igb_hwmon->groups); |
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237 if (IS_ERR(hwmon_dev)) { |
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238 rc = PTR_ERR(hwmon_dev); |
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239 goto err; |
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240 } |
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241 |
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242 goto exit; |
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243 |
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244 err: |
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245 igb_sysfs_del_adapter(adapter); |
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246 exit: |
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247 return rc; |
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248 } |
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249 #endif |