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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2010 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 *******************************************************************************/ |
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28 |
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29 #include <linux/netdevice.h> |
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30 #include <linux/pci.h> |
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31 |
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32 #include "e1000.h" |
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33 |
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34 int entropy = 0; |
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35 module_param(entropy, int, 0); |
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36 MODULE_PARM_DESC(entropy, "Allow e1000e to populate the /dev/random entropy pool"); |
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37 |
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38 /* |
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39 * This is the only thing that needs to be changed to adjust the |
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40 * maximum number of ports that the driver can manage. |
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41 */ |
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42 |
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43 #define E1000_MAX_NIC 32 |
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44 |
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45 #define OPTION_UNSET -1 |
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46 #define OPTION_DISABLED 0 |
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47 #define OPTION_ENABLED 1 |
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48 |
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49 #define COPYBREAK_DEFAULT 256 |
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50 unsigned int copybreak = COPYBREAK_DEFAULT; |
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51 module_param(copybreak, uint, 0644); |
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52 MODULE_PARM_DESC(copybreak, |
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53 "Maximum size of packet that is copied to a new buffer on receive"); |
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54 |
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55 /* |
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56 * All parameters are treated the same, as an integer array of values. |
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57 * This macro just reduces the need to repeat the same declaration code |
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58 * over and over (plus this helps to avoid typo bugs). |
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59 */ |
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60 |
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61 #define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET } |
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62 #define E1000_PARAM(X, desc) \ |
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63 static int __devinitdata X[E1000_MAX_NIC+1] \ |
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64 = E1000_PARAM_INIT; \ |
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65 static unsigned int num_##X; \ |
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66 module_param_array_named(X, X, int, &num_##X, 0); \ |
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67 MODULE_PARM_DESC(X, desc); |
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68 |
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69 |
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70 /* |
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71 * Transmit Interrupt Delay in units of 1.024 microseconds |
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72 * Tx interrupt delay needs to typically be set to something non zero |
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73 * |
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74 * Valid Range: 0-65535 |
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75 */ |
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76 E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay"); |
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77 #define DEFAULT_TIDV 8 |
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78 #define MAX_TXDELAY 0xFFFF |
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79 #define MIN_TXDELAY 0 |
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80 |
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81 /* |
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82 * Transmit Absolute Interrupt Delay in units of 1.024 microseconds |
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83 * |
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84 * Valid Range: 0-65535 |
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85 */ |
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86 E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay"); |
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87 #define DEFAULT_TADV 32 |
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88 #define MAX_TXABSDELAY 0xFFFF |
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89 #define MIN_TXABSDELAY 0 |
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90 |
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91 /* |
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92 * Receive Interrupt Delay in units of 1.024 microseconds |
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93 * hardware will likely hang if you set this to anything but zero. |
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94 * |
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95 * Valid Range: 0-65535 |
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96 */ |
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97 E1000_PARAM(RxIntDelay, "Receive Interrupt Delay"); |
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98 #define MAX_RXDELAY 0xFFFF |
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99 #define MIN_RXDELAY 0 |
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100 |
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101 /* |
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102 * Receive Absolute Interrupt Delay in units of 1.024 microseconds |
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103 * |
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104 * Valid Range: 0-65535 |
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105 */ |
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106 E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay"); |
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107 #define MAX_RXABSDELAY 0xFFFF |
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108 #define MIN_RXABSDELAY 0 |
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109 |
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110 /* |
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111 * Interrupt Throttle Rate (interrupts/sec) |
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112 * |
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113 * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative) |
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114 */ |
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115 E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate"); |
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116 #define DEFAULT_ITR 3 |
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117 #define MAX_ITR 100000 |
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118 #define MIN_ITR 100 |
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119 /* IntMode (Interrupt Mode) |
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120 * |
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121 * Valid Range: 0 - 2 |
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122 * |
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123 * Default Value: 2 (MSI-X) |
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124 */ |
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125 E1000_PARAM(IntMode, "Interrupt Mode"); |
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126 #define MAX_INTMODE 2 |
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127 #define MIN_INTMODE 0 |
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128 |
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129 /* |
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130 * Enable Smart Power Down of the PHY |
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131 * |
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132 * Valid Range: 0, 1 |
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133 * |
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134 * Default Value: 0 (disabled) |
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135 */ |
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136 E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down"); |
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137 |
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138 /* |
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139 * Enable Kumeran Lock Loss workaround |
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140 * |
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141 * Valid Range: 0, 1 |
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142 * |
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143 * Default Value: 1 (enabled) |
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144 */ |
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145 E1000_PARAM(KumeranLockLoss, "Enable Kumeran lock loss workaround"); |
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146 |
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147 /* |
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148 * Write Protect NVM |
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149 * |
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150 * Valid Range: 0, 1 |
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151 * |
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152 * Default Value: 1 (enabled) |
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153 */ |
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154 E1000_PARAM(WriteProtectNVM, "Write-protect NVM [WARNING: disabling this can lead to corrupted NVM]"); |
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155 |
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156 /* |
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157 * Enable CRC Stripping |
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158 * |
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159 * Valid Range: 0, 1 |
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160 * |
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161 * Default Value: 1 (enabled) |
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162 */ |
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163 E1000_PARAM(CrcStripping, "Enable CRC Stripping, disable if your BMC needs " \ |
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164 "the CRC"); |
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165 |
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166 struct e1000_option { |
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167 enum { enable_option, range_option, list_option } type; |
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168 const char *name; |
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169 const char *err; |
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170 int def; |
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171 union { |
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172 struct { /* range_option info */ |
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173 int min; |
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174 int max; |
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175 } r; |
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176 struct { /* list_option info */ |
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177 int nr; |
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178 struct e1000_opt_list { int i; char *str; } *p; |
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179 } l; |
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180 } arg; |
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181 }; |
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182 |
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183 static int __devinit e1000_validate_option(unsigned int *value, |
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184 const struct e1000_option *opt, |
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185 struct e1000_adapter *adapter) |
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186 { |
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187 if (*value == OPTION_UNSET) { |
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188 *value = opt->def; |
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189 return 0; |
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190 } |
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191 |
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192 switch (opt->type) { |
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193 case enable_option: |
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194 switch (*value) { |
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195 case OPTION_ENABLED: |
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196 e_info("%s Enabled\n", opt->name); |
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197 return 0; |
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198 case OPTION_DISABLED: |
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199 e_info("%s Disabled\n", opt->name); |
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200 return 0; |
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201 } |
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202 break; |
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203 case range_option: |
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204 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) { |
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205 e_info("%s set to %i\n", opt->name, *value); |
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206 return 0; |
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207 } |
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208 break; |
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209 case list_option: { |
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210 int i; |
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211 struct e1000_opt_list *ent; |
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212 |
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213 for (i = 0; i < opt->arg.l.nr; i++) { |
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214 ent = &opt->arg.l.p[i]; |
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215 if (*value == ent->i) { |
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216 if (ent->str[0] != '\0') |
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217 e_info("%s\n", ent->str); |
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218 return 0; |
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219 } |
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220 } |
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221 } |
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222 break; |
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223 default: |
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224 BUG(); |
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225 } |
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226 |
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227 e_info("Invalid %s value specified (%i) %s\n", opt->name, *value, |
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228 opt->err); |
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229 *value = opt->def; |
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230 return -1; |
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231 } |
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232 |
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233 /** |
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234 * e1000e_check_options - Range Checking for Command Line Parameters |
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235 * @adapter: board private structure |
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236 * |
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237 * This routine checks all command line parameters for valid user |
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238 * input. If an invalid value is given, or if no user specified |
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239 * value exists, a default value is used. The final value is stored |
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240 * in a variable in the adapter structure. |
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241 **/ |
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242 void __devinit e1000e_check_options(struct e1000_adapter *adapter) |
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243 { |
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244 struct e1000_hw *hw = &adapter->hw; |
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245 int bd = adapter->bd_number; |
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246 |
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247 if (bd >= E1000_MAX_NIC) { |
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248 e_notice("Warning: no configuration for board #%i\n", bd); |
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249 e_notice("Using defaults for all values\n"); |
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250 } |
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251 |
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252 { /* Transmit Interrupt Delay */ |
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253 static const struct e1000_option opt = { |
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254 .type = range_option, |
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255 .name = "Transmit Interrupt Delay", |
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256 .err = "using default of " |
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257 __MODULE_STRING(DEFAULT_TIDV), |
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258 .def = DEFAULT_TIDV, |
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259 .arg = { .r = { .min = MIN_TXDELAY, |
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260 .max = MAX_TXDELAY } } |
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261 }; |
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262 |
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263 if (num_TxIntDelay > bd) { |
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264 adapter->tx_int_delay = TxIntDelay[bd]; |
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265 e1000_validate_option(&adapter->tx_int_delay, &opt, |
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266 adapter); |
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267 } else { |
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268 adapter->tx_int_delay = opt.def; |
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269 } |
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270 } |
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271 { /* Transmit Absolute Interrupt Delay */ |
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272 static const struct e1000_option opt = { |
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273 .type = range_option, |
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274 .name = "Transmit Absolute Interrupt Delay", |
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275 .err = "using default of " |
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276 __MODULE_STRING(DEFAULT_TADV), |
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277 .def = DEFAULT_TADV, |
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278 .arg = { .r = { .min = MIN_TXABSDELAY, |
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279 .max = MAX_TXABSDELAY } } |
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280 }; |
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281 |
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282 if (num_TxAbsIntDelay > bd) { |
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283 adapter->tx_abs_int_delay = TxAbsIntDelay[bd]; |
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284 e1000_validate_option(&adapter->tx_abs_int_delay, &opt, |
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285 adapter); |
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286 } else { |
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287 adapter->tx_abs_int_delay = opt.def; |
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288 } |
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289 } |
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290 { /* Receive Interrupt Delay */ |
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291 static struct e1000_option opt = { |
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292 .type = range_option, |
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293 .name = "Receive Interrupt Delay", |
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294 .err = "using default of " |
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295 __MODULE_STRING(DEFAULT_RDTR), |
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296 .def = DEFAULT_RDTR, |
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297 .arg = { .r = { .min = MIN_RXDELAY, |
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298 .max = MAX_RXDELAY } } |
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299 }; |
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300 |
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301 if (num_RxIntDelay > bd) { |
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302 adapter->rx_int_delay = RxIntDelay[bd]; |
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303 e1000_validate_option(&adapter->rx_int_delay, &opt, |
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304 adapter); |
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305 } else { |
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306 adapter->rx_int_delay = opt.def; |
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307 } |
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308 } |
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309 { /* Receive Absolute Interrupt Delay */ |
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310 static const struct e1000_option opt = { |
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311 .type = range_option, |
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312 .name = "Receive Absolute Interrupt Delay", |
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313 .err = "using default of " |
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314 __MODULE_STRING(DEFAULT_RADV), |
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315 .def = DEFAULT_RADV, |
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316 .arg = { .r = { .min = MIN_RXABSDELAY, |
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317 .max = MAX_RXABSDELAY } } |
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318 }; |
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319 |
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320 if (num_RxAbsIntDelay > bd) { |
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321 adapter->rx_abs_int_delay = RxAbsIntDelay[bd]; |
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322 e1000_validate_option(&adapter->rx_abs_int_delay, &opt, |
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323 adapter); |
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324 } else { |
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325 adapter->rx_abs_int_delay = opt.def; |
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326 } |
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327 } |
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328 { /* Interrupt Throttling Rate */ |
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329 static const struct e1000_option opt = { |
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330 .type = range_option, |
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331 .name = "Interrupt Throttling Rate (ints/sec)", |
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332 .err = "using default of " |
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333 __MODULE_STRING(DEFAULT_ITR), |
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334 .def = DEFAULT_ITR, |
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335 .arg = { .r = { .min = MIN_ITR, |
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336 .max = MAX_ITR } } |
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337 }; |
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338 |
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339 if (num_InterruptThrottleRate > bd) { |
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340 adapter->itr = InterruptThrottleRate[bd]; |
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341 switch (adapter->itr) { |
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342 case 0: |
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343 e_info("%s turned off\n", opt.name); |
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344 break; |
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345 case 1: |
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346 e_info("%s set to dynamic mode\n", opt.name); |
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347 adapter->itr_setting = adapter->itr; |
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348 adapter->itr = 20000; |
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349 break; |
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350 case 3: |
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351 e_info("%s set to dynamic conservative mode\n", |
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352 opt.name); |
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353 adapter->itr_setting = adapter->itr; |
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354 adapter->itr = 20000; |
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355 break; |
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356 case 4: |
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357 e_info("%s set to simplified (2000-8000 ints) " |
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358 "mode\n", opt.name); |
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359 adapter->itr_setting = 4; |
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360 break; |
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361 default: |
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362 /* |
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363 * Save the setting, because the dynamic bits |
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364 * change itr. |
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365 */ |
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366 if (e1000_validate_option(&adapter->itr, &opt, |
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367 adapter) && |
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368 (adapter->itr == 3)) { |
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369 /* |
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370 * In case of invalid user value, |
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371 * default to conservative mode. |
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372 */ |
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373 adapter->itr_setting = adapter->itr; |
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374 adapter->itr = 20000; |
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375 } else { |
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376 /* |
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377 * Clear the lower two bits because |
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378 * they are used as control. |
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379 */ |
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380 adapter->itr_setting = |
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381 adapter->itr & ~3; |
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382 } |
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383 break; |
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384 } |
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385 } else { |
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386 adapter->itr_setting = opt.def; |
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387 adapter->itr = 20000; |
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388 } |
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389 } |
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390 { /* Interrupt Mode */ |
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391 static struct e1000_option opt = { |
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392 .type = range_option, |
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393 .name = "Interrupt Mode", |
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394 .err = "defaulting to 2 (MSI-X)", |
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395 .def = E1000E_INT_MODE_MSIX, |
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396 .arg = { .r = { .min = MIN_INTMODE, |
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397 .max = MAX_INTMODE } } |
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398 }; |
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399 |
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400 if (num_IntMode > bd) { |
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401 unsigned int int_mode = IntMode[bd]; |
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402 e1000_validate_option(&int_mode, &opt, adapter); |
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403 adapter->int_mode = int_mode; |
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404 } else { |
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405 adapter->int_mode = opt.def; |
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406 } |
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407 } |
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408 { /* Smart Power Down */ |
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409 static const struct e1000_option opt = { |
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410 .type = enable_option, |
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411 .name = "PHY Smart Power Down", |
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412 .err = "defaulting to Disabled", |
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413 .def = OPTION_DISABLED |
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414 }; |
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415 |
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416 if (num_SmartPowerDownEnable > bd) { |
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417 unsigned int spd = SmartPowerDownEnable[bd]; |
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418 e1000_validate_option(&spd, &opt, adapter); |
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419 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) |
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420 && spd) |
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421 adapter->flags |= FLAG_SMART_POWER_DOWN; |
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422 } |
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423 } |
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424 { /* CRC Stripping */ |
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425 static const struct e1000_option opt = { |
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426 .type = enable_option, |
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427 .name = "CRC Stripping", |
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428 .err = "defaulting to enabled", |
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429 .def = OPTION_ENABLED |
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430 }; |
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431 |
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432 if (num_CrcStripping > bd) { |
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433 unsigned int crc_stripping = CrcStripping[bd]; |
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434 e1000_validate_option(&crc_stripping, &opt, adapter); |
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435 if (crc_stripping == OPTION_ENABLED) |
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436 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
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437 } else { |
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438 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
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439 } |
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440 } |
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441 { /* Kumeran Lock Loss Workaround */ |
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442 static const struct e1000_option opt = { |
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443 .type = enable_option, |
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444 .name = "Kumeran Lock Loss Workaround", |
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445 .err = "defaulting to Enabled", |
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446 .def = OPTION_ENABLED |
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447 }; |
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448 |
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449 if (num_KumeranLockLoss > bd) { |
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450 unsigned int kmrn_lock_loss = KumeranLockLoss[bd]; |
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451 e1000_validate_option(&kmrn_lock_loss, &opt, adapter); |
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452 if (hw->mac.type == e1000_ich8lan) |
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453 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw, |
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454 kmrn_lock_loss); |
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455 } else { |
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456 if (hw->mac.type == e1000_ich8lan) |
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457 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw, |
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458 opt.def); |
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459 } |
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460 } |
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461 { /* Write-protect NVM */ |
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462 static const struct e1000_option opt = { |
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463 .type = enable_option, |
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464 .name = "Write-protect NVM", |
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465 .err = "defaulting to Enabled", |
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466 .def = OPTION_ENABLED |
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467 }; |
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468 |
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469 if (adapter->flags & FLAG_IS_ICH) { |
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470 if (num_WriteProtectNVM > bd) { |
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471 unsigned int write_protect_nvm = WriteProtectNVM[bd]; |
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472 e1000_validate_option(&write_protect_nvm, &opt, |
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473 adapter); |
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474 if (write_protect_nvm) |
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475 adapter->flags |= FLAG_READ_ONLY_NVM; |
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476 } else { |
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477 if (opt.def) |
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478 adapter->flags |= FLAG_READ_ONLY_NVM; |
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479 } |
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480 } |
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481 } |
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482 } |