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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 - 2012 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/module.h> |
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31 #include <linux/pci.h> |
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32 |
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33 #include "e1000-3.6-ethercat.h" |
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34 |
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35 /* |
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36 * This is the only thing that needs to be changed to adjust the |
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37 * maximum number of ports that the driver can manage. |
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38 */ |
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39 |
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40 #define E1000_MAX_NIC 32 |
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41 |
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42 #define OPTION_UNSET -1 |
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43 #define OPTION_DISABLED 0 |
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44 #define OPTION_ENABLED 1 |
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45 |
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46 #define COPYBREAK_DEFAULT 256 |
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47 unsigned int copybreak = COPYBREAK_DEFAULT; |
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48 module_param(copybreak, uint, 0644); |
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49 MODULE_PARM_DESC(copybreak, |
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50 "Maximum size of packet that is copied to a new buffer on receive"); |
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51 |
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52 /* |
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53 * All parameters are treated the same, as an integer array of values. |
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54 * This macro just reduces the need to repeat the same declaration code |
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55 * over and over (plus this helps to avoid typo bugs). |
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56 */ |
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57 |
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58 #define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET } |
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59 #define E1000_PARAM(X, desc) \ |
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60 static int __devinitdata X[E1000_MAX_NIC+1] \ |
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61 = E1000_PARAM_INIT; \ |
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62 static unsigned int num_##X; \ |
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63 module_param_array_named(X, X, int, &num_##X, 0); \ |
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64 MODULE_PARM_DESC(X, desc); |
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65 |
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66 /* |
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67 * Transmit Interrupt Delay in units of 1.024 microseconds |
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68 * Tx interrupt delay needs to typically be set to something non-zero |
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69 * |
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70 * Valid Range: 0-65535 |
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71 */ |
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72 E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay"); |
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73 #define DEFAULT_TIDV 8 |
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74 #define MAX_TXDELAY 0xFFFF |
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75 #define MIN_TXDELAY 0 |
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76 |
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77 /* |
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78 * Transmit Absolute Interrupt Delay in units of 1.024 microseconds |
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79 * |
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80 * Valid Range: 0-65535 |
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81 */ |
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82 E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay"); |
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83 #define DEFAULT_TADV 32 |
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84 #define MAX_TXABSDELAY 0xFFFF |
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85 #define MIN_TXABSDELAY 0 |
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86 |
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87 /* |
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88 * Receive Interrupt Delay in units of 1.024 microseconds |
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89 * hardware will likely hang if you set this to anything but zero. |
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90 * |
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91 * Valid Range: 0-65535 |
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92 */ |
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93 E1000_PARAM(RxIntDelay, "Receive Interrupt Delay"); |
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94 #define MAX_RXDELAY 0xFFFF |
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95 #define MIN_RXDELAY 0 |
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96 |
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97 /* |
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98 * Receive Absolute Interrupt Delay in units of 1.024 microseconds |
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99 * |
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100 * Valid Range: 0-65535 |
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101 */ |
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102 E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay"); |
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103 #define MAX_RXABSDELAY 0xFFFF |
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104 #define MIN_RXABSDELAY 0 |
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105 |
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106 /* |
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107 * Interrupt Throttle Rate (interrupts/sec) |
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108 * |
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109 * Valid Range: 100-100000 or one of: 0=off, 1=dynamic, 3=dynamic conservative |
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110 */ |
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111 E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate"); |
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112 #define DEFAULT_ITR 3 |
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113 #define MAX_ITR 100000 |
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114 #define MIN_ITR 100 |
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115 |
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116 /* |
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117 * IntMode (Interrupt Mode) |
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118 * |
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119 * Valid Range: varies depending on kernel configuration & hardware support |
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120 * |
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121 * legacy=0, MSI=1, MSI-X=2 |
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122 * |
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123 * When MSI/MSI-X support is enabled in kernel- |
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124 * Default Value: 2 (MSI-X) when supported by hardware, 1 (MSI) otherwise |
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125 * When MSI/MSI-X support is not enabled in kernel- |
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126 * Default Value: 0 (legacy) |
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127 * |
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128 * When a mode is specified that is not allowed/supported, it will be |
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129 * demoted to the most advanced interrupt mode available. |
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130 */ |
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131 E1000_PARAM(IntMode, "Interrupt Mode"); |
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132 #define MAX_INTMODE 2 |
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133 #define MIN_INTMODE 0 |
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134 |
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135 /* |
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136 * Enable Smart Power Down of the PHY |
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137 * |
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138 * Valid Range: 0, 1 |
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139 * |
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140 * Default Value: 0 (disabled) |
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141 */ |
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142 E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down"); |
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143 |
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144 /* |
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145 * Enable Kumeran Lock Loss workaround |
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146 * |
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147 * Valid Range: 0, 1 |
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148 * |
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149 * Default Value: 1 (enabled) |
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150 */ |
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151 E1000_PARAM(KumeranLockLoss, "Enable Kumeran lock loss workaround"); |
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152 |
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153 /* |
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154 * Write Protect NVM |
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155 * |
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156 * Valid Range: 0, 1 |
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157 * |
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158 * Default Value: 1 (enabled) |
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159 */ |
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160 E1000_PARAM(WriteProtectNVM, "Write-protect NVM [WARNING: disabling this can lead to corrupted NVM]"); |
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161 |
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162 /* |
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163 * Enable CRC Stripping |
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164 * |
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165 * Valid Range: 0, 1 |
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166 * |
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167 * Default Value: 1 (enabled) |
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168 */ |
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169 E1000_PARAM(CrcStripping, |
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170 "Enable CRC Stripping, disable if your BMC needs the CRC"); |
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171 |
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172 struct e1000_option { |
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173 enum { enable_option, range_option, list_option } type; |
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174 const char *name; |
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175 const char *err; |
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176 int def; |
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177 union { |
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178 struct { /* range_option info */ |
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179 int min; |
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180 int max; |
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181 } r; |
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182 struct { /* list_option info */ |
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183 int nr; |
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184 struct e1000_opt_list { int i; char *str; } *p; |
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185 } l; |
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186 } arg; |
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187 }; |
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188 |
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189 static int __devinit e1000_validate_option(unsigned int *value, |
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190 const struct e1000_option *opt, |
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191 struct e1000_adapter *adapter) |
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192 { |
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193 if (*value == OPTION_UNSET) { |
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194 *value = opt->def; |
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195 return 0; |
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196 } |
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197 |
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198 switch (opt->type) { |
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199 case enable_option: |
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200 switch (*value) { |
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201 case OPTION_ENABLED: |
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202 dev_info(&adapter->pdev->dev, "%s Enabled\n", |
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203 opt->name); |
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204 return 0; |
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205 case OPTION_DISABLED: |
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206 dev_info(&adapter->pdev->dev, "%s Disabled\n", |
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207 opt->name); |
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208 return 0; |
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209 } |
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210 break; |
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211 case range_option: |
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212 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) { |
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213 dev_info(&adapter->pdev->dev, "%s set to %i\n", |
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214 opt->name, *value); |
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215 return 0; |
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216 } |
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217 break; |
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218 case list_option: { |
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219 int i; |
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220 struct e1000_opt_list *ent; |
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221 |
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222 for (i = 0; i < opt->arg.l.nr; i++) { |
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223 ent = &opt->arg.l.p[i]; |
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224 if (*value == ent->i) { |
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225 if (ent->str[0] != '\0') |
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226 dev_info(&adapter->pdev->dev, "%s\n", |
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227 ent->str); |
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228 return 0; |
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229 } |
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230 } |
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231 } |
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232 break; |
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233 default: |
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234 BUG(); |
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235 } |
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236 |
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237 dev_info(&adapter->pdev->dev, "Invalid %s value specified (%i) %s\n", |
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238 opt->name, *value, opt->err); |
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239 *value = opt->def; |
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240 return -1; |
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241 } |
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242 |
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243 /** |
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244 * e1000e_check_options - Range Checking for Command Line Parameters |
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245 * @adapter: board private structure |
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246 * |
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247 * This routine checks all command line parameters for valid user |
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248 * input. If an invalid value is given, or if no user specified |
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249 * value exists, a default value is used. The final value is stored |
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250 * in a variable in the adapter structure. |
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251 **/ |
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252 void __devinit e1000e_check_options(struct e1000_adapter *adapter) |
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253 { |
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254 struct e1000_hw *hw = &adapter->hw; |
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255 int bd = adapter->bd_number; |
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256 |
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257 if (bd >= E1000_MAX_NIC) { |
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258 dev_notice(&adapter->pdev->dev, |
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259 "Warning: no configuration for board #%i\n", bd); |
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260 dev_notice(&adapter->pdev->dev, |
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261 "Using defaults for all values\n"); |
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262 } |
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263 |
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264 { /* Transmit Interrupt Delay */ |
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265 static const struct e1000_option opt = { |
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266 .type = range_option, |
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267 .name = "Transmit Interrupt Delay", |
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268 .err = "using default of " |
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269 __MODULE_STRING(DEFAULT_TIDV), |
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270 .def = DEFAULT_TIDV, |
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271 .arg = { .r = { .min = MIN_TXDELAY, |
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272 .max = MAX_TXDELAY } } |
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273 }; |
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274 |
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275 if (num_TxIntDelay > bd) { |
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276 adapter->tx_int_delay = TxIntDelay[bd]; |
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277 e1000_validate_option(&adapter->tx_int_delay, &opt, |
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278 adapter); |
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279 } else { |
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280 adapter->tx_int_delay = opt.def; |
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281 } |
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282 } |
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283 { /* Transmit Absolute Interrupt Delay */ |
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284 static const struct e1000_option opt = { |
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285 .type = range_option, |
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286 .name = "Transmit Absolute Interrupt Delay", |
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287 .err = "using default of " |
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288 __MODULE_STRING(DEFAULT_TADV), |
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289 .def = DEFAULT_TADV, |
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290 .arg = { .r = { .min = MIN_TXABSDELAY, |
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291 .max = MAX_TXABSDELAY } } |
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292 }; |
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293 |
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294 if (num_TxAbsIntDelay > bd) { |
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295 adapter->tx_abs_int_delay = TxAbsIntDelay[bd]; |
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296 e1000_validate_option(&adapter->tx_abs_int_delay, &opt, |
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297 adapter); |
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298 } else { |
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299 adapter->tx_abs_int_delay = opt.def; |
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300 } |
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301 } |
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302 { /* Receive Interrupt Delay */ |
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303 static struct e1000_option opt = { |
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304 .type = range_option, |
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305 .name = "Receive Interrupt Delay", |
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306 .err = "using default of " |
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307 __MODULE_STRING(DEFAULT_RDTR), |
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308 .def = DEFAULT_RDTR, |
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309 .arg = { .r = { .min = MIN_RXDELAY, |
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310 .max = MAX_RXDELAY } } |
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311 }; |
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312 |
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313 if (num_RxIntDelay > bd) { |
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314 adapter->rx_int_delay = RxIntDelay[bd]; |
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315 e1000_validate_option(&adapter->rx_int_delay, &opt, |
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316 adapter); |
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317 } else { |
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318 adapter->rx_int_delay = opt.def; |
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319 } |
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320 } |
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321 { /* Receive Absolute Interrupt Delay */ |
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322 static const struct e1000_option opt = { |
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323 .type = range_option, |
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324 .name = "Receive Absolute Interrupt Delay", |
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325 .err = "using default of " |
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326 __MODULE_STRING(DEFAULT_RADV), |
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327 .def = DEFAULT_RADV, |
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328 .arg = { .r = { .min = MIN_RXABSDELAY, |
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329 .max = MAX_RXABSDELAY } } |
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330 }; |
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331 |
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332 if (num_RxAbsIntDelay > bd) { |
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333 adapter->rx_abs_int_delay = RxAbsIntDelay[bd]; |
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334 e1000_validate_option(&adapter->rx_abs_int_delay, &opt, |
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335 adapter); |
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336 } else { |
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337 adapter->rx_abs_int_delay = opt.def; |
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338 } |
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339 } |
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340 { /* Interrupt Throttling Rate */ |
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341 static const struct e1000_option opt = { |
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342 .type = range_option, |
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343 .name = "Interrupt Throttling Rate (ints/sec)", |
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344 .err = "using default of " |
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345 __MODULE_STRING(DEFAULT_ITR), |
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346 .def = DEFAULT_ITR, |
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347 .arg = { .r = { .min = MIN_ITR, |
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348 .max = MAX_ITR } } |
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349 }; |
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350 |
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351 if (num_InterruptThrottleRate > bd) { |
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352 adapter->itr = InterruptThrottleRate[bd]; |
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353 |
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354 /* |
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355 * Make sure a message is printed for non-special |
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356 * values. And in case of an invalid option, display |
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357 * warning, use default and go through itr/itr_setting |
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358 * adjustment logic below |
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359 */ |
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360 if ((adapter->itr > 4) && |
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361 e1000_validate_option(&adapter->itr, &opt, adapter)) |
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362 adapter->itr = opt.def; |
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363 } else { |
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364 /* |
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365 * If no option specified, use default value and go |
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366 * through the logic below to adjust itr/itr_setting |
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367 */ |
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368 adapter->itr = opt.def; |
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369 |
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370 /* |
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371 * Make sure a message is printed for non-special |
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372 * default values |
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373 */ |
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374 if (adapter->itr > 4) |
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375 dev_info(&adapter->pdev->dev, |
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376 "%s set to default %d\n", opt.name, |
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377 adapter->itr); |
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378 } |
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379 |
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380 adapter->itr_setting = adapter->itr; |
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381 switch (adapter->itr) { |
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382 case 0: |
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383 dev_info(&adapter->pdev->dev, "%s turned off\n", |
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384 opt.name); |
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385 break; |
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386 case 1: |
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387 dev_info(&adapter->pdev->dev, |
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388 "%s set to dynamic mode\n", opt.name); |
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389 adapter->itr = 20000; |
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390 break; |
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391 case 3: |
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392 dev_info(&adapter->pdev->dev, |
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393 "%s set to dynamic conservative mode\n", |
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394 opt.name); |
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395 adapter->itr = 20000; |
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396 break; |
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397 case 4: |
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398 dev_info(&adapter->pdev->dev, |
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399 "%s set to simplified (2000-8000 ints) mode\n", |
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400 opt.name); |
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401 break; |
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402 default: |
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403 /* |
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404 * Save the setting, because the dynamic bits |
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405 * change itr. |
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406 * |
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407 * Clear the lower two bits because |
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408 * they are used as control. |
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409 */ |
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410 adapter->itr_setting &= ~3; |
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411 break; |
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412 } |
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413 } |
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414 { /* Interrupt Mode */ |
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415 static struct e1000_option opt = { |
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416 .type = range_option, |
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417 .name = "Interrupt Mode", |
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418 #ifndef CONFIG_PCI_MSI |
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419 .err = "defaulting to 0 (legacy)", |
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420 .def = E1000E_INT_MODE_LEGACY, |
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421 .arg = { .r = { .min = 0, |
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422 .max = 0 } } |
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423 #endif |
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424 }; |
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425 |
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426 #ifdef CONFIG_PCI_MSI |
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427 if (adapter->flags & FLAG_HAS_MSIX) { |
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428 opt.err = kstrdup("defaulting to 2 (MSI-X)", |
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429 GFP_KERNEL); |
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430 opt.def = E1000E_INT_MODE_MSIX; |
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431 opt.arg.r.max = E1000E_INT_MODE_MSIX; |
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432 } else { |
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433 opt.err = kstrdup("defaulting to 1 (MSI)", GFP_KERNEL); |
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434 opt.def = E1000E_INT_MODE_MSI; |
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435 opt.arg.r.max = E1000E_INT_MODE_MSI; |
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436 } |
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437 |
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438 if (!opt.err) { |
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439 dev_err(&adapter->pdev->dev, |
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440 "Failed to allocate memory\n"); |
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441 return; |
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442 } |
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443 #endif |
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444 |
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445 if (num_IntMode > bd) { |
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446 unsigned int int_mode = IntMode[bd]; |
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447 e1000_validate_option(&int_mode, &opt, adapter); |
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448 adapter->int_mode = int_mode; |
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449 } else { |
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450 adapter->int_mode = opt.def; |
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451 } |
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452 |
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453 #ifdef CONFIG_PCI_MSI |
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454 kfree(opt.err); |
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455 #endif |
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456 } |
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457 { /* Smart Power Down */ |
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458 static const struct e1000_option opt = { |
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459 .type = enable_option, |
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460 .name = "PHY Smart Power Down", |
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461 .err = "defaulting to Disabled", |
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462 .def = OPTION_DISABLED |
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463 }; |
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464 |
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465 if (num_SmartPowerDownEnable > bd) { |
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466 unsigned int spd = SmartPowerDownEnable[bd]; |
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467 e1000_validate_option(&spd, &opt, adapter); |
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468 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) |
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469 && spd) |
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470 adapter->flags |= FLAG_SMART_POWER_DOWN; |
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471 } |
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472 } |
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473 { /* CRC Stripping */ |
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474 static const struct e1000_option opt = { |
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475 .type = enable_option, |
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476 .name = "CRC Stripping", |
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477 .err = "defaulting to Enabled", |
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478 .def = OPTION_ENABLED |
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479 }; |
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480 |
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481 if (num_CrcStripping > bd) { |
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482 unsigned int crc_stripping = CrcStripping[bd]; |
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483 e1000_validate_option(&crc_stripping, &opt, adapter); |
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484 if (crc_stripping == OPTION_ENABLED) { |
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485 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
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486 adapter->flags2 |= FLAG2_DFLT_CRC_STRIPPING; |
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487 } |
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488 } else { |
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489 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
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490 adapter->flags2 |= FLAG2_DFLT_CRC_STRIPPING; |
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491 } |
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492 } |
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493 { /* Kumeran Lock Loss Workaround */ |
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494 static const struct e1000_option opt = { |
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495 .type = enable_option, |
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496 .name = "Kumeran Lock Loss Workaround", |
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497 .err = "defaulting to Enabled", |
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498 .def = OPTION_ENABLED |
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499 }; |
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500 |
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501 if (num_KumeranLockLoss > bd) { |
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502 unsigned int kmrn_lock_loss = KumeranLockLoss[bd]; |
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503 e1000_validate_option(&kmrn_lock_loss, &opt, adapter); |
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504 if (hw->mac.type == e1000_ich8lan) |
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505 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw, |
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506 kmrn_lock_loss); |
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507 } else { |
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508 if (hw->mac.type == e1000_ich8lan) |
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509 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw, |
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510 opt.def); |
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511 } |
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512 } |
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513 { /* Write-protect NVM */ |
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514 static const struct e1000_option opt = { |
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515 .type = enable_option, |
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516 .name = "Write-protect NVM", |
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517 .err = "defaulting to Enabled", |
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518 .def = OPTION_ENABLED |
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519 }; |
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520 |
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521 if (adapter->flags & FLAG_IS_ICH) { |
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522 if (num_WriteProtectNVM > bd) { |
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523 unsigned int write_protect_nvm = WriteProtectNVM[bd]; |
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524 e1000_validate_option(&write_protect_nvm, &opt, |
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525 adapter); |
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526 if (write_protect_nvm) |
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527 adapter->flags |= FLAG_READ_ONLY_NVM; |
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528 } else { |
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529 if (opt.def) |
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530 adapter->flags |= FLAG_READ_ONLY_NVM; |
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531 } |
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532 } |
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533 } |
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534 } |