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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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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30 |
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31 #include <linux/module.h> |
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32 #include <linux/types.h> |
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33 #include <linux/init.h> |
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34 #include <linux/pci.h> |
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35 #include <linux/vmalloc.h> |
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36 #include <linux/pagemap.h> |
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37 #include <linux/delay.h> |
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38 #include <linux/netdevice.h> |
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39 #include <linux/tcp.h> |
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40 #include <linux/ipv6.h> |
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41 #include <linux/slab.h> |
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42 #include <net/checksum.h> |
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43 #include <net/ip6_checksum.h> |
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44 #include <linux/mii.h> |
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45 #include <linux/ethtool.h> |
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46 #include <linux/if_vlan.h> |
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47 #include <linux/cpu.h> |
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48 #include <linux/smp.h> |
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49 #include <linux/pm_qos_params.h> |
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50 #include <linux/pm_runtime.h> |
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51 #include <linux/aer.h> |
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52 |
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53 #include "e1000-2.6.37-ethercat.h" |
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54 |
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55 #define DRV_EXTRAVERSION "-k2-EtherCAT" |
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56 |
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57 #define DRV_VERSION "1.2.7" DRV_EXTRAVERSION |
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58 char e1000e_driver_name[] = "ec_e1000e"; |
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59 const char e1000e_driver_version[] = DRV_VERSION; |
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60 |
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61 static const struct e1000_info *e1000_info_tbl[] = { |
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62 [board_82571] = &e1000_82571_info, |
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63 [board_82572] = &e1000_82572_info, |
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64 [board_82573] = &e1000_82573_info, |
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65 [board_82574] = &e1000_82574_info, |
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66 [board_82583] = &e1000_82583_info, |
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67 [board_80003es2lan] = &e1000_es2_info, |
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68 [board_ich8lan] = &e1000_ich8_info, |
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69 [board_ich9lan] = &e1000_ich9_info, |
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70 [board_ich10lan] = &e1000_ich10_info, |
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71 [board_pchlan] = &e1000_pch_info, |
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72 [board_pch2lan] = &e1000_pch2_info, |
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73 }; |
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74 |
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75 struct e1000_reg_info { |
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76 u32 ofs; |
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77 char *name; |
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78 }; |
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79 |
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80 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */ |
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81 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */ |
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82 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */ |
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83 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */ |
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84 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */ |
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85 |
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86 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */ |
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87 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */ |
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88 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */ |
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89 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */ |
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90 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */ |
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91 |
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92 static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
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93 |
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94 /* General Registers */ |
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95 {E1000_CTRL, "CTRL"}, |
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96 {E1000_STATUS, "STATUS"}, |
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97 {E1000_CTRL_EXT, "CTRL_EXT"}, |
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98 |
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99 /* Interrupt Registers */ |
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100 {E1000_ICR, "ICR"}, |
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101 |
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102 /* RX Registers */ |
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103 {E1000_RCTL, "RCTL"}, |
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104 {E1000_RDLEN, "RDLEN"}, |
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105 {E1000_RDH, "RDH"}, |
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106 {E1000_RDT, "RDT"}, |
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107 {E1000_RDTR, "RDTR"}, |
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108 {E1000_RXDCTL(0), "RXDCTL"}, |
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109 {E1000_ERT, "ERT"}, |
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110 {E1000_RDBAL, "RDBAL"}, |
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111 {E1000_RDBAH, "RDBAH"}, |
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112 {E1000_RDFH, "RDFH"}, |
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113 {E1000_RDFT, "RDFT"}, |
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114 {E1000_RDFHS, "RDFHS"}, |
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115 {E1000_RDFTS, "RDFTS"}, |
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116 {E1000_RDFPC, "RDFPC"}, |
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117 |
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118 /* TX Registers */ |
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119 {E1000_TCTL, "TCTL"}, |
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120 {E1000_TDBAL, "TDBAL"}, |
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121 {E1000_TDBAH, "TDBAH"}, |
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122 {E1000_TDLEN, "TDLEN"}, |
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123 {E1000_TDH, "TDH"}, |
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124 {E1000_TDT, "TDT"}, |
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125 {E1000_TIDV, "TIDV"}, |
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126 {E1000_TXDCTL(0), "TXDCTL"}, |
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127 {E1000_TADV, "TADV"}, |
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128 {E1000_TARC(0), "TARC"}, |
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129 {E1000_TDFH, "TDFH"}, |
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130 {E1000_TDFT, "TDFT"}, |
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131 {E1000_TDFHS, "TDFHS"}, |
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132 {E1000_TDFTS, "TDFTS"}, |
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133 {E1000_TDFPC, "TDFPC"}, |
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134 |
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135 /* List Terminator */ |
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136 {} |
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137 }; |
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138 |
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139 /* |
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140 * e1000_regdump - register printout routine |
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141 */ |
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142 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
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143 { |
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144 int n = 0; |
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145 char rname[16]; |
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146 u32 regs[8]; |
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147 |
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148 switch (reginfo->ofs) { |
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149 case E1000_RXDCTL(0): |
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150 for (n = 0; n < 2; n++) |
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151 regs[n] = __er32(hw, E1000_RXDCTL(n)); |
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152 break; |
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153 case E1000_TXDCTL(0): |
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154 for (n = 0; n < 2; n++) |
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155 regs[n] = __er32(hw, E1000_TXDCTL(n)); |
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156 break; |
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157 case E1000_TARC(0): |
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158 for (n = 0; n < 2; n++) |
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159 regs[n] = __er32(hw, E1000_TARC(n)); |
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160 break; |
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161 default: |
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162 printk(KERN_INFO "%-15s %08x\n", |
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163 reginfo->name, __er32(hw, reginfo->ofs)); |
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164 return; |
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165 } |
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166 |
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167 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); |
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168 printk(KERN_INFO "%-15s ", rname); |
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169 for (n = 0; n < 2; n++) |
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170 printk(KERN_CONT "%08x ", regs[n]); |
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171 printk(KERN_CONT "\n"); |
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172 } |
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173 |
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174 |
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175 /* |
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176 * e1000e_dump - Print registers, tx-ring and rx-ring |
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177 */ |
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178 static void e1000e_dump(struct e1000_adapter *adapter) |
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179 { |
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180 struct net_device *netdev = adapter->netdev; |
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181 struct e1000_hw *hw = &adapter->hw; |
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182 struct e1000_reg_info *reginfo; |
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183 struct e1000_ring *tx_ring = adapter->tx_ring; |
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184 struct e1000_tx_desc *tx_desc; |
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185 struct my_u0 { u64 a; u64 b; } *u0; |
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186 struct e1000_buffer *buffer_info; |
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187 struct e1000_ring *rx_ring = adapter->rx_ring; |
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188 union e1000_rx_desc_packet_split *rx_desc_ps; |
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189 struct e1000_rx_desc *rx_desc; |
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190 struct my_u1 { u64 a; u64 b; u64 c; u64 d; } *u1; |
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191 u32 staterr; |
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192 int i = 0; |
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193 |
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194 if (!netif_msg_hw(adapter)) |
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195 return; |
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196 |
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197 /* Print netdevice Info */ |
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198 if (netdev) { |
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199 dev_info(&adapter->pdev->dev, "Net device Info\n"); |
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200 printk(KERN_INFO "Device Name state " |
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201 "trans_start last_rx\n"); |
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202 printk(KERN_INFO "%-15s %016lX %016lX %016lX\n", |
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203 netdev->name, |
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204 netdev->state, |
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205 netdev->trans_start, |
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206 netdev->last_rx); |
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207 } |
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208 |
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209 /* Print Registers */ |
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210 dev_info(&adapter->pdev->dev, "Register Dump\n"); |
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211 printk(KERN_INFO " Register Name Value\n"); |
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212 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
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213 reginfo->name; reginfo++) { |
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214 e1000_regdump(hw, reginfo); |
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215 } |
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216 |
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217 /* Print TX Ring Summary */ |
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218 if (!netdev || !netif_running(netdev)) |
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219 goto exit; |
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220 |
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221 dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); |
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222 printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]" |
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223 " leng ntw timestamp\n"); |
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224 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
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225 printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n", |
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226 0, tx_ring->next_to_use, tx_ring->next_to_clean, |
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227 (unsigned long long)buffer_info->dma, |
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228 buffer_info->length, |
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229 buffer_info->next_to_watch, |
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230 (unsigned long long)buffer_info->time_stamp); |
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231 |
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232 /* Print TX Rings */ |
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233 if (!netif_msg_tx_done(adapter)) |
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234 goto rx_ring_summary; |
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235 |
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236 dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); |
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237 |
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238 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) |
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239 * |
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240 * Legacy Transmit Descriptor |
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241 * +--------------------------------------------------------------+ |
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242 * 0 | Buffer Address [63:0] (Reserved on Write Back) | |
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243 * +--------------------------------------------------------------+ |
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244 * 8 | Special | CSS | Status | CMD | CSO | Length | |
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245 * +--------------------------------------------------------------+ |
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246 * 63 48 47 36 35 32 31 24 23 16 15 0 |
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247 * |
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248 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload |
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249 * 63 48 47 40 39 32 31 16 15 8 7 0 |
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250 * +----------------------------------------------------------------+ |
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251 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | |
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252 * +----------------------------------------------------------------+ |
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253 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | |
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254 * +----------------------------------------------------------------+ |
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255 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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256 * |
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257 * Extended Data Descriptor (DTYP=0x1) |
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258 * +----------------------------------------------------------------+ |
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259 * 0 | Buffer Address [63:0] | |
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260 * +----------------------------------------------------------------+ |
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261 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | |
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262 * +----------------------------------------------------------------+ |
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263 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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264 */ |
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265 printk(KERN_INFO "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]" |
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266 " [bi->dma ] leng ntw timestamp bi->skb " |
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267 "<-- Legacy format\n"); |
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268 printk(KERN_INFO "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]" |
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269 " [bi->dma ] leng ntw timestamp bi->skb " |
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270 "<-- Ext Context format\n"); |
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271 printk(KERN_INFO "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]" |
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272 " [bi->dma ] leng ntw timestamp bi->skb " |
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273 "<-- Ext Data format\n"); |
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274 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
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275 tx_desc = E1000_TX_DESC(*tx_ring, i); |
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276 buffer_info = &tx_ring->buffer_info[i]; |
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277 u0 = (struct my_u0 *)tx_desc; |
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278 printk(KERN_INFO "T%c[0x%03X] %016llX %016llX %016llX " |
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279 "%04X %3X %016llX %p", |
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280 (!(le64_to_cpu(u0->b) & (1<<29)) ? 'l' : |
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281 ((le64_to_cpu(u0->b) & (1<<20)) ? 'd' : 'c')), i, |
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282 (unsigned long long)le64_to_cpu(u0->a), |
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283 (unsigned long long)le64_to_cpu(u0->b), |
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284 (unsigned long long)buffer_info->dma, |
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285 buffer_info->length, buffer_info->next_to_watch, |
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286 (unsigned long long)buffer_info->time_stamp, |
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287 buffer_info->skb); |
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288 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
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289 printk(KERN_CONT " NTC/U\n"); |
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290 else if (i == tx_ring->next_to_use) |
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291 printk(KERN_CONT " NTU\n"); |
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292 else if (i == tx_ring->next_to_clean) |
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293 printk(KERN_CONT " NTC\n"); |
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294 else |
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295 printk(KERN_CONT "\n"); |
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296 |
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297 if (netif_msg_pktdata(adapter) && buffer_info->dma != 0) |
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298 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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299 16, 1, phys_to_virt(buffer_info->dma), |
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300 buffer_info->length, true); |
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301 } |
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302 |
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303 /* Print RX Rings Summary */ |
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304 rx_ring_summary: |
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305 dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); |
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306 printk(KERN_INFO "Queue [NTU] [NTC]\n"); |
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307 printk(KERN_INFO " %5d %5X %5X\n", 0, |
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308 rx_ring->next_to_use, rx_ring->next_to_clean); |
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309 |
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310 /* Print RX Rings */ |
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311 if (!netif_msg_rx_status(adapter)) |
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312 goto exit; |
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313 |
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314 dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); |
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315 switch (adapter->rx_ps_pages) { |
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316 case 1: |
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317 case 2: |
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318 case 3: |
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319 /* [Extended] Packet Split Receive Descriptor Format |
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320 * |
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321 * +-----------------------------------------------------+ |
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322 * 0 | Buffer Address 0 [63:0] | |
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323 * +-----------------------------------------------------+ |
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324 * 8 | Buffer Address 1 [63:0] | |
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325 * +-----------------------------------------------------+ |
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326 * 16 | Buffer Address 2 [63:0] | |
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327 * +-----------------------------------------------------+ |
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328 * 24 | Buffer Address 3 [63:0] | |
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329 * +-----------------------------------------------------+ |
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330 */ |
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331 printk(KERN_INFO "R [desc] [buffer 0 63:0 ] " |
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332 "[buffer 1 63:0 ] " |
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333 "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] " |
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334 "[bi->skb] <-- Ext Pkt Split format\n"); |
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335 /* [Extended] Receive Descriptor (Write-Back) Format |
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336 * |
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337 * 63 48 47 32 31 13 12 8 7 4 3 0 |
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338 * +------------------------------------------------------+ |
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339 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | |
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340 * | Checksum | Ident | | Queue | | Type | |
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341 * +------------------------------------------------------+ |
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342 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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343 * +------------------------------------------------------+ |
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344 * 63 48 47 32 31 20 19 0 |
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345 */ |
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346 printk(KERN_INFO "RWB[desc] [ck ipid mrqhsh] " |
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347 "[vl l0 ee es] " |
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348 "[ l3 l2 l1 hs] [reserved ] ---------------- " |
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349 "[bi->skb] <-- Ext Rx Write-Back format\n"); |
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350 for (i = 0; i < rx_ring->count; i++) { |
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351 buffer_info = &rx_ring->buffer_info[i]; |
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352 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); |
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353 u1 = (struct my_u1 *)rx_desc_ps; |
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354 staterr = |
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355 le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
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356 if (staterr & E1000_RXD_STAT_DD) { |
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357 /* Descriptor Done */ |
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358 printk(KERN_INFO "RWB[0x%03X] %016llX " |
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359 "%016llX %016llX %016llX " |
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360 "---------------- %p", i, |
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361 (unsigned long long)le64_to_cpu(u1->a), |
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362 (unsigned long long)le64_to_cpu(u1->b), |
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363 (unsigned long long)le64_to_cpu(u1->c), |
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364 (unsigned long long)le64_to_cpu(u1->d), |
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365 buffer_info->skb); |
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366 } else { |
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367 printk(KERN_INFO "R [0x%03X] %016llX " |
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368 "%016llX %016llX %016llX %016llX %p", i, |
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369 (unsigned long long)le64_to_cpu(u1->a), |
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370 (unsigned long long)le64_to_cpu(u1->b), |
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371 (unsigned long long)le64_to_cpu(u1->c), |
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372 (unsigned long long)le64_to_cpu(u1->d), |
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373 (unsigned long long)buffer_info->dma, |
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374 buffer_info->skb); |
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375 |
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376 if (netif_msg_pktdata(adapter)) |
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377 print_hex_dump(KERN_INFO, "", |
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378 DUMP_PREFIX_ADDRESS, 16, 1, |
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379 phys_to_virt(buffer_info->dma), |
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380 adapter->rx_ps_bsize0, true); |
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381 } |
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382 |
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383 if (i == rx_ring->next_to_use) |
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384 printk(KERN_CONT " NTU\n"); |
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385 else if (i == rx_ring->next_to_clean) |
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386 printk(KERN_CONT " NTC\n"); |
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387 else |
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388 printk(KERN_CONT "\n"); |
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389 } |
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390 break; |
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391 default: |
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392 case 0: |
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393 /* Legacy Receive Descriptor Format |
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394 * |
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395 * +-----------------------------------------------------+ |
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396 * | Buffer Address [63:0] | |
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397 * +-----------------------------------------------------+ |
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398 * | VLAN Tag | Errors | Status 0 | Packet csum | Length | |
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399 * +-----------------------------------------------------+ |
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400 * 63 48 47 40 39 32 31 16 15 0 |
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401 */ |
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402 printk(KERN_INFO "Rl[desc] [address 63:0 ] " |
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403 "[vl er S cks ln] [bi->dma ] [bi->skb] " |
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404 "<-- Legacy format\n"); |
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405 for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) { |
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406 rx_desc = E1000_RX_DESC(*rx_ring, i); |
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407 buffer_info = &rx_ring->buffer_info[i]; |
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408 u0 = (struct my_u0 *)rx_desc; |
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409 printk(KERN_INFO "Rl[0x%03X] %016llX %016llX " |
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410 "%016llX %p", i, |
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411 (unsigned long long)le64_to_cpu(u0->a), |
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412 (unsigned long long)le64_to_cpu(u0->b), |
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413 (unsigned long long)buffer_info->dma, |
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414 buffer_info->skb); |
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415 if (i == rx_ring->next_to_use) |
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416 printk(KERN_CONT " NTU\n"); |
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417 else if (i == rx_ring->next_to_clean) |
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418 printk(KERN_CONT " NTC\n"); |
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419 else |
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420 printk(KERN_CONT "\n"); |
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421 |
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422 if (netif_msg_pktdata(adapter)) |
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423 print_hex_dump(KERN_INFO, "", |
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424 DUMP_PREFIX_ADDRESS, |
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425 16, 1, phys_to_virt(buffer_info->dma), |
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426 adapter->rx_buffer_len, true); |
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427 } |
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428 } |
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429 |
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430 exit: |
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431 return; |
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432 } |
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433 |
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434 /** |
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435 * e1000_desc_unused - calculate if we have unused descriptors |
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436 **/ |
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437 static int e1000_desc_unused(struct e1000_ring *ring) |
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438 { |
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439 if (ring->next_to_clean > ring->next_to_use) |
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440 return ring->next_to_clean - ring->next_to_use - 1; |
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441 |
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442 return ring->count + ring->next_to_clean - ring->next_to_use - 1; |
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443 } |
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444 |
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445 /** |
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446 * e1000_receive_skb - helper function to handle Rx indications |
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447 * @adapter: board private structure |
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448 * @status: descriptor status field as written by hardware |
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449 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
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450 * @skb: pointer to sk_buff to be indicated to stack |
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451 **/ |
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452 static void e1000_receive_skb(struct e1000_adapter *adapter, |
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453 struct net_device *netdev, |
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454 struct sk_buff *skb, |
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455 u8 status, __le16 vlan) |
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456 { |
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457 skb->protocol = eth_type_trans(skb, netdev); |
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458 |
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459 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) |
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460 vlan_gro_receive(&adapter->napi, adapter->vlgrp, |
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461 le16_to_cpu(vlan), skb); |
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462 else |
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463 napi_gro_receive(&adapter->napi, skb); |
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464 } |
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465 |
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466 /** |
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467 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
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468 * @adapter: board private structure |
|
469 * @status_err: receive descriptor status and error fields |
|
470 * @csum: receive descriptor csum field |
|
471 * @sk_buff: socket buffer with received data |
|
472 **/ |
|
473 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
474 u32 csum, struct sk_buff *skb) |
|
475 { |
|
476 u16 status = (u16)status_err; |
|
477 u8 errors = (u8)(status_err >> 24); |
|
478 |
|
479 skb_checksum_none_assert(skb); |
|
480 |
|
481 /* Ignore Checksum bit is set */ |
|
482 if (status & E1000_RXD_STAT_IXSM) |
|
483 return; |
|
484 /* TCP/UDP checksum error bit is set */ |
|
485 if (errors & E1000_RXD_ERR_TCPE) { |
|
486 /* let the stack verify checksum errors */ |
|
487 adapter->hw_csum_err++; |
|
488 return; |
|
489 } |
|
490 |
|
491 /* TCP/UDP Checksum has not been calculated */ |
|
492 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
493 return; |
|
494 |
|
495 /* It must be a TCP or UDP packet with a valid checksum */ |
|
496 if (status & E1000_RXD_STAT_TCPCS) { |
|
497 /* TCP checksum is good */ |
|
498 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
499 } else { |
|
500 /* |
|
501 * IP fragment with UDP payload |
|
502 * Hardware complements the payload checksum, so we undo it |
|
503 * and then put the value in host order for further stack use. |
|
504 */ |
|
505 __sum16 sum = (__force __sum16)htons(csum); |
|
506 skb->csum = csum_unfold(~sum); |
|
507 skb->ip_summed = CHECKSUM_COMPLETE; |
|
508 } |
|
509 adapter->hw_csum_good++; |
|
510 } |
|
511 |
|
512 /** |
|
513 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
514 * @adapter: address of board private structure |
|
515 **/ |
|
516 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
517 int cleaned_count) |
|
518 { |
|
519 struct net_device *netdev = adapter->netdev; |
|
520 struct pci_dev *pdev = adapter->pdev; |
|
521 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
522 struct e1000_rx_desc *rx_desc; |
|
523 struct e1000_buffer *buffer_info; |
|
524 struct sk_buff *skb; |
|
525 unsigned int i; |
|
526 unsigned int bufsz = adapter->rx_buffer_len; |
|
527 |
|
528 i = rx_ring->next_to_use; |
|
529 buffer_info = &rx_ring->buffer_info[i]; |
|
530 |
|
531 while (cleaned_count--) { |
|
532 skb = buffer_info->skb; |
|
533 if (skb) { |
|
534 skb_trim(skb, 0); |
|
535 goto map_skb; |
|
536 } |
|
537 |
|
538 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
539 if (!skb) { |
|
540 /* Better luck next round */ |
|
541 adapter->alloc_rx_buff_failed++; |
|
542 break; |
|
543 } |
|
544 |
|
545 buffer_info->skb = skb; |
|
546 map_skb: |
|
547 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
548 adapter->rx_buffer_len, |
|
549 DMA_FROM_DEVICE); |
|
550 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
551 dev_err(&pdev->dev, "RX DMA map failed\n"); |
|
552 adapter->rx_dma_failed++; |
|
553 break; |
|
554 } |
|
555 |
|
556 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
557 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
558 |
|
559 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
560 /* |
|
561 * Force memory writes to complete before letting h/w |
|
562 * know there are new descriptors to fetch. (Only |
|
563 * applicable for weak-ordered memory model archs, |
|
564 * such as IA-64). |
|
565 */ |
|
566 wmb(); |
|
567 writel(i, adapter->hw.hw_addr + rx_ring->tail); |
|
568 } |
|
569 i++; |
|
570 if (i == rx_ring->count) |
|
571 i = 0; |
|
572 buffer_info = &rx_ring->buffer_info[i]; |
|
573 } |
|
574 |
|
575 rx_ring->next_to_use = i; |
|
576 } |
|
577 |
|
578 /** |
|
579 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
580 * @adapter: address of board private structure |
|
581 **/ |
|
582 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
|
583 int cleaned_count) |
|
584 { |
|
585 struct net_device *netdev = adapter->netdev; |
|
586 struct pci_dev *pdev = adapter->pdev; |
|
587 union e1000_rx_desc_packet_split *rx_desc; |
|
588 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
589 struct e1000_buffer *buffer_info; |
|
590 struct e1000_ps_page *ps_page; |
|
591 struct sk_buff *skb; |
|
592 unsigned int i, j; |
|
593 |
|
594 i = rx_ring->next_to_use; |
|
595 buffer_info = &rx_ring->buffer_info[i]; |
|
596 |
|
597 while (cleaned_count--) { |
|
598 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
599 |
|
600 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
601 ps_page = &buffer_info->ps_pages[j]; |
|
602 if (j >= adapter->rx_ps_pages) { |
|
603 /* all unused desc entries get hw null ptr */ |
|
604 rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0); |
|
605 continue; |
|
606 } |
|
607 if (!ps_page->page) { |
|
608 ps_page->page = netdev_alloc_page(netdev); |
|
609 if (!ps_page->page) { |
|
610 adapter->alloc_rx_buff_failed++; |
|
611 goto no_buffers; |
|
612 } |
|
613 ps_page->dma = dma_map_page(&pdev->dev, |
|
614 ps_page->page, |
|
615 0, PAGE_SIZE, |
|
616 DMA_FROM_DEVICE); |
|
617 if (dma_mapping_error(&pdev->dev, |
|
618 ps_page->dma)) { |
|
619 dev_err(&adapter->pdev->dev, |
|
620 "RX DMA page map failed\n"); |
|
621 adapter->rx_dma_failed++; |
|
622 goto no_buffers; |
|
623 } |
|
624 } |
|
625 /* |
|
626 * Refresh the desc even if buffer_addrs |
|
627 * didn't change because each write-back |
|
628 * erases this info. |
|
629 */ |
|
630 rx_desc->read.buffer_addr[j+1] = |
|
631 cpu_to_le64(ps_page->dma); |
|
632 } |
|
633 |
|
634 skb = netdev_alloc_skb_ip_align(netdev, |
|
635 adapter->rx_ps_bsize0); |
|
636 |
|
637 if (!skb) { |
|
638 adapter->alloc_rx_buff_failed++; |
|
639 break; |
|
640 } |
|
641 |
|
642 buffer_info->skb = skb; |
|
643 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
644 adapter->rx_ps_bsize0, |
|
645 DMA_FROM_DEVICE); |
|
646 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
647 dev_err(&pdev->dev, "RX DMA map failed\n"); |
|
648 adapter->rx_dma_failed++; |
|
649 /* cleanup skb */ |
|
650 dev_kfree_skb_any(skb); |
|
651 buffer_info->skb = NULL; |
|
652 break; |
|
653 } |
|
654 |
|
655 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
656 |
|
657 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
658 /* |
|
659 * Force memory writes to complete before letting h/w |
|
660 * know there are new descriptors to fetch. (Only |
|
661 * applicable for weak-ordered memory model archs, |
|
662 * such as IA-64). |
|
663 */ |
|
664 wmb(); |
|
665 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail); |
|
666 } |
|
667 |
|
668 i++; |
|
669 if (i == rx_ring->count) |
|
670 i = 0; |
|
671 buffer_info = &rx_ring->buffer_info[i]; |
|
672 } |
|
673 |
|
674 no_buffers: |
|
675 rx_ring->next_to_use = i; |
|
676 } |
|
677 |
|
678 /** |
|
679 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
680 * @adapter: address of board private structure |
|
681 * @cleaned_count: number of buffers to allocate this pass |
|
682 **/ |
|
683 |
|
684 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
|
685 int cleaned_count) |
|
686 { |
|
687 struct net_device *netdev = adapter->netdev; |
|
688 struct pci_dev *pdev = adapter->pdev; |
|
689 struct e1000_rx_desc *rx_desc; |
|
690 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
691 struct e1000_buffer *buffer_info; |
|
692 struct sk_buff *skb; |
|
693 unsigned int i; |
|
694 unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
|
695 |
|
696 i = rx_ring->next_to_use; |
|
697 buffer_info = &rx_ring->buffer_info[i]; |
|
698 |
|
699 while (cleaned_count--) { |
|
700 skb = buffer_info->skb; |
|
701 if (skb) { |
|
702 skb_trim(skb, 0); |
|
703 goto check_page; |
|
704 } |
|
705 |
|
706 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
707 if (unlikely(!skb)) { |
|
708 /* Better luck next round */ |
|
709 adapter->alloc_rx_buff_failed++; |
|
710 break; |
|
711 } |
|
712 |
|
713 buffer_info->skb = skb; |
|
714 check_page: |
|
715 /* allocate a new page if necessary */ |
|
716 if (!buffer_info->page) { |
|
717 buffer_info->page = alloc_page(GFP_ATOMIC); |
|
718 if (unlikely(!buffer_info->page)) { |
|
719 adapter->alloc_rx_buff_failed++; |
|
720 break; |
|
721 } |
|
722 } |
|
723 |
|
724 if (!buffer_info->dma) |
|
725 buffer_info->dma = dma_map_page(&pdev->dev, |
|
726 buffer_info->page, 0, |
|
727 PAGE_SIZE, |
|
728 DMA_FROM_DEVICE); |
|
729 |
|
730 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
731 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
732 |
|
733 if (unlikely(++i == rx_ring->count)) |
|
734 i = 0; |
|
735 buffer_info = &rx_ring->buffer_info[i]; |
|
736 } |
|
737 |
|
738 if (likely(rx_ring->next_to_use != i)) { |
|
739 rx_ring->next_to_use = i; |
|
740 if (unlikely(i-- == 0)) |
|
741 i = (rx_ring->count - 1); |
|
742 |
|
743 /* Force memory writes to complete before letting h/w |
|
744 * know there are new descriptors to fetch. (Only |
|
745 * applicable for weak-ordered memory model archs, |
|
746 * such as IA-64). */ |
|
747 wmb(); |
|
748 writel(i, adapter->hw.hw_addr + rx_ring->tail); |
|
749 } |
|
750 } |
|
751 |
|
752 /** |
|
753 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
754 * @adapter: board private structure |
|
755 * |
|
756 * the return value indicates whether actual cleaning was done, there |
|
757 * is no guarantee that everything was cleaned |
|
758 **/ |
|
759 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
760 int *work_done, int work_to_do) |
|
761 { |
|
762 struct net_device *netdev = adapter->netdev; |
|
763 struct pci_dev *pdev = adapter->pdev; |
|
764 struct e1000_hw *hw = &adapter->hw; |
|
765 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
766 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
767 struct e1000_buffer *buffer_info, *next_buffer; |
|
768 u32 length; |
|
769 unsigned int i; |
|
770 int cleaned_count = 0; |
|
771 bool cleaned = 0; |
|
772 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
773 |
|
774 i = rx_ring->next_to_clean; |
|
775 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
776 buffer_info = &rx_ring->buffer_info[i]; |
|
777 |
|
778 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
779 struct sk_buff *skb; |
|
780 u8 status; |
|
781 |
|
782 if (*work_done >= work_to_do) |
|
783 break; |
|
784 (*work_done)++; |
|
785 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
786 |
|
787 status = rx_desc->status; |
|
788 skb = buffer_info->skb; |
|
789 |
|
790 if (!adapter->ecdev) |
|
791 buffer_info->skb = NULL; |
|
792 |
|
793 prefetch(skb->data - NET_IP_ALIGN); |
|
794 |
|
795 i++; |
|
796 if (i == rx_ring->count) |
|
797 i = 0; |
|
798 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
799 prefetch(next_rxd); |
|
800 |
|
801 next_buffer = &rx_ring->buffer_info[i]; |
|
802 |
|
803 cleaned = 1; |
|
804 cleaned_count++; |
|
805 dma_unmap_single(&pdev->dev, |
|
806 buffer_info->dma, |
|
807 adapter->rx_buffer_len, |
|
808 DMA_FROM_DEVICE); |
|
809 buffer_info->dma = 0; |
|
810 |
|
811 length = le16_to_cpu(rx_desc->length); |
|
812 |
|
813 /* |
|
814 * !EOP means multiple descriptors were used to store a single |
|
815 * packet, if that's the case we need to toss it. In fact, we |
|
816 * need to toss every packet with the EOP bit clear and the |
|
817 * next frame that _does_ have the EOP bit set, as it is by |
|
818 * definition only a frame fragment |
|
819 */ |
|
820 if (unlikely(!(status & E1000_RXD_STAT_EOP))) |
|
821 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
822 |
|
823 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
824 /* All receives must fit into a single buffer */ |
|
825 e_dbg("Receive packet consumed multiple buffers\n"); |
|
826 /* recycle */ |
|
827 buffer_info->skb = skb; |
|
828 if (status & E1000_RXD_STAT_EOP) |
|
829 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
830 goto next_desc; |
|
831 } |
|
832 |
|
833 if (!adapter->ecdev && (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
834 /* recycle */ |
|
835 buffer_info->skb = skb; |
|
836 goto next_desc; |
|
837 } |
|
838 |
|
839 /* adjust length to remove Ethernet CRC */ |
|
840 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) |
|
841 length -= 4; |
|
842 |
|
843 total_rx_bytes += length; |
|
844 total_rx_packets++; |
|
845 |
|
846 /* |
|
847 * code added for copybreak, this should improve |
|
848 * performance for small packets with large amounts |
|
849 * of reassembly being done in the stack |
|
850 */ |
|
851 if (!adapter->ecdev && length < copybreak) { |
|
852 struct sk_buff *new_skb = |
|
853 netdev_alloc_skb_ip_align(netdev, length); |
|
854 if (new_skb) { |
|
855 skb_copy_to_linear_data_offset(new_skb, |
|
856 -NET_IP_ALIGN, |
|
857 (skb->data - |
|
858 NET_IP_ALIGN), |
|
859 (length + |
|
860 NET_IP_ALIGN)); |
|
861 /* save the skb in buffer_info as good */ |
|
862 buffer_info->skb = skb; |
|
863 skb = new_skb; |
|
864 } |
|
865 /* else just continue with the old one */ |
|
866 } |
|
867 /* end copybreak code */ |
|
868 skb_put(skb, length); |
|
869 |
|
870 /* Receive Checksum Offload */ |
|
871 e1000_rx_checksum(adapter, |
|
872 (u32)(status) | |
|
873 ((u32)(rx_desc->errors) << 24), |
|
874 le16_to_cpu(rx_desc->csum), skb); |
|
875 |
|
876 if (adapter->ecdev) { |
|
877 ecdev_receive(adapter->ecdev, skb->data, length); |
|
878 adapter->ec_watchdog_jiffies = jiffies; |
|
879 } else { |
|
880 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); |
|
881 } |
|
882 |
|
883 next_desc: |
|
884 rx_desc->status = 0; |
|
885 |
|
886 /* return some buffers to hardware, one at a time is too slow */ |
|
887 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
888 adapter->alloc_rx_buf(adapter, cleaned_count); |
|
889 cleaned_count = 0; |
|
890 } |
|
891 |
|
892 /* use prefetched values */ |
|
893 rx_desc = next_rxd; |
|
894 buffer_info = next_buffer; |
|
895 } |
|
896 rx_ring->next_to_clean = i; |
|
897 |
|
898 cleaned_count = e1000_desc_unused(rx_ring); |
|
899 if (cleaned_count) |
|
900 adapter->alloc_rx_buf(adapter, cleaned_count); |
|
901 |
|
902 adapter->total_rx_bytes += total_rx_bytes; |
|
903 adapter->total_rx_packets += total_rx_packets; |
|
904 netdev->stats.rx_bytes += total_rx_bytes; |
|
905 netdev->stats.rx_packets += total_rx_packets; |
|
906 return cleaned; |
|
907 } |
|
908 |
|
909 static void e1000_put_txbuf(struct e1000_adapter *adapter, |
|
910 struct e1000_buffer *buffer_info) |
|
911 { |
|
912 if (adapter->ecdev) |
|
913 return; |
|
914 |
|
915 if (buffer_info->dma) { |
|
916 if (buffer_info->mapped_as_page) |
|
917 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
918 buffer_info->length, DMA_TO_DEVICE); |
|
919 else |
|
920 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
921 buffer_info->length, DMA_TO_DEVICE); |
|
922 buffer_info->dma = 0; |
|
923 } |
|
924 if (buffer_info->skb) { |
|
925 dev_kfree_skb_any(buffer_info->skb); |
|
926 buffer_info->skb = NULL; |
|
927 } |
|
928 buffer_info->time_stamp = 0; |
|
929 } |
|
930 |
|
931 static void e1000_print_hw_hang(struct work_struct *work) |
|
932 { |
|
933 struct e1000_adapter *adapter = container_of(work, |
|
934 struct e1000_adapter, |
|
935 print_hang_task); |
|
936 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
937 unsigned int i = tx_ring->next_to_clean; |
|
938 unsigned int eop = tx_ring->buffer_info[i].next_to_watch; |
|
939 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
940 struct e1000_hw *hw = &adapter->hw; |
|
941 u16 phy_status, phy_1000t_status, phy_ext_status; |
|
942 u16 pci_status; |
|
943 |
|
944 e1e_rphy(hw, PHY_STATUS, &phy_status); |
|
945 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); |
|
946 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); |
|
947 |
|
948 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
|
949 |
|
950 /* detected Hardware unit hang */ |
|
951 e_err("Detected Hardware Unit Hang:\n" |
|
952 " TDH <%x>\n" |
|
953 " TDT <%x>\n" |
|
954 " next_to_use <%x>\n" |
|
955 " next_to_clean <%x>\n" |
|
956 "buffer_info[next_to_clean]:\n" |
|
957 " time_stamp <%lx>\n" |
|
958 " next_to_watch <%x>\n" |
|
959 " jiffies <%lx>\n" |
|
960 " next_to_watch.status <%x>\n" |
|
961 "MAC Status <%x>\n" |
|
962 "PHY Status <%x>\n" |
|
963 "PHY 1000BASE-T Status <%x>\n" |
|
964 "PHY Extended Status <%x>\n" |
|
965 "PCI Status <%x>\n", |
|
966 readl(adapter->hw.hw_addr + tx_ring->head), |
|
967 readl(adapter->hw.hw_addr + tx_ring->tail), |
|
968 tx_ring->next_to_use, |
|
969 tx_ring->next_to_clean, |
|
970 tx_ring->buffer_info[eop].time_stamp, |
|
971 eop, |
|
972 jiffies, |
|
973 eop_desc->upper.fields.status, |
|
974 er32(STATUS), |
|
975 phy_status, |
|
976 phy_1000t_status, |
|
977 phy_ext_status, |
|
978 pci_status); |
|
979 } |
|
980 |
|
981 /** |
|
982 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
983 * @adapter: board private structure |
|
984 * |
|
985 * the return value indicates whether actual cleaning was done, there |
|
986 * is no guarantee that everything was cleaned |
|
987 **/ |
|
988 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter) |
|
989 { |
|
990 struct net_device *netdev = adapter->netdev; |
|
991 struct e1000_hw *hw = &adapter->hw; |
|
992 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
993 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
994 struct e1000_buffer *buffer_info; |
|
995 unsigned int i, eop; |
|
996 unsigned int count = 0; |
|
997 unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
|
998 |
|
999 i = tx_ring->next_to_clean; |
|
1000 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1001 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1002 |
|
1003 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
1004 (count < tx_ring->count)) { |
|
1005 bool cleaned = false; |
|
1006 rmb(); /* read buffer_info after eop_desc */ |
|
1007 for (; !cleaned; count++) { |
|
1008 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
1009 buffer_info = &tx_ring->buffer_info[i]; |
|
1010 cleaned = (i == eop); |
|
1011 |
|
1012 if (cleaned) { |
|
1013 total_tx_packets += buffer_info->segs; |
|
1014 total_tx_bytes += buffer_info->bytecount; |
|
1015 } |
|
1016 |
|
1017 e1000_put_txbuf(adapter, buffer_info); |
|
1018 tx_desc->upper.data = 0; |
|
1019 |
|
1020 i++; |
|
1021 if (i == tx_ring->count) |
|
1022 i = 0; |
|
1023 } |
|
1024 |
|
1025 if (i == tx_ring->next_to_use) |
|
1026 break; |
|
1027 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1028 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1029 } |
|
1030 |
|
1031 tx_ring->next_to_clean = i; |
|
1032 |
|
1033 #define TX_WAKE_THRESHOLD 32 |
|
1034 if (!adapter->ecdev && count && netif_carrier_ok(netdev) && |
|
1035 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { |
|
1036 /* Make sure that anybody stopping the queue after this |
|
1037 * sees the new next_to_clean. |
|
1038 */ |
|
1039 smp_mb(); |
|
1040 |
|
1041 if (netif_queue_stopped(netdev) && |
|
1042 !(test_bit(__E1000_DOWN, &adapter->state))) { |
|
1043 netif_wake_queue(netdev); |
|
1044 ++adapter->restart_queue; |
|
1045 } |
|
1046 } |
|
1047 |
|
1048 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
1049 /* |
|
1050 * Detect a transmit hang in hardware, this serializes the |
|
1051 * check with the clearing of time_stamp and movement of i |
|
1052 */ |
|
1053 adapter->detect_tx_hung = 0; |
|
1054 if (tx_ring->buffer_info[i].time_stamp && |
|
1055 time_after(jiffies, tx_ring->buffer_info[i].time_stamp |
|
1056 + (adapter->tx_timeout_factor * HZ)) && |
|
1057 !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
|
1058 schedule_work(&adapter->print_hang_task); |
|
1059 netif_stop_queue(netdev); |
|
1060 } |
|
1061 } |
|
1062 adapter->total_tx_bytes += total_tx_bytes; |
|
1063 adapter->total_tx_packets += total_tx_packets; |
|
1064 netdev->stats.tx_bytes += total_tx_bytes; |
|
1065 netdev->stats.tx_packets += total_tx_packets; |
|
1066 return count < tx_ring->count; |
|
1067 } |
|
1068 |
|
1069 /** |
|
1070 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
1071 * @adapter: board private structure |
|
1072 * |
|
1073 * the return value indicates whether actual cleaning was done, there |
|
1074 * is no guarantee that everything was cleaned |
|
1075 **/ |
|
1076 static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
|
1077 int *work_done, int work_to_do) |
|
1078 { |
|
1079 struct e1000_hw *hw = &adapter->hw; |
|
1080 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
1081 struct net_device *netdev = adapter->netdev; |
|
1082 struct pci_dev *pdev = adapter->pdev; |
|
1083 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1084 struct e1000_buffer *buffer_info, *next_buffer; |
|
1085 struct e1000_ps_page *ps_page; |
|
1086 struct sk_buff *skb; |
|
1087 unsigned int i, j; |
|
1088 u32 length, staterr; |
|
1089 int cleaned_count = 0; |
|
1090 bool cleaned = 0; |
|
1091 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1092 |
|
1093 i = rx_ring->next_to_clean; |
|
1094 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
1095 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1096 buffer_info = &rx_ring->buffer_info[i]; |
|
1097 |
|
1098 while (staterr & E1000_RXD_STAT_DD) { |
|
1099 if (*work_done >= work_to_do) |
|
1100 break; |
|
1101 (*work_done)++; |
|
1102 skb = buffer_info->skb; |
|
1103 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1104 |
|
1105 /* in the packet split case this is header only */ |
|
1106 prefetch(skb->data - NET_IP_ALIGN); |
|
1107 |
|
1108 i++; |
|
1109 if (i == rx_ring->count) |
|
1110 i = 0; |
|
1111 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
1112 prefetch(next_rxd); |
|
1113 |
|
1114 next_buffer = &rx_ring->buffer_info[i]; |
|
1115 |
|
1116 cleaned = 1; |
|
1117 cleaned_count++; |
|
1118 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1119 adapter->rx_ps_bsize0, |
|
1120 DMA_FROM_DEVICE); |
|
1121 buffer_info->dma = 0; |
|
1122 |
|
1123 /* see !EOP comment in other rx routine */ |
|
1124 if (!(staterr & E1000_RXD_STAT_EOP)) |
|
1125 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
1126 |
|
1127 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
1128 e_dbg("Packet Split buffers didn't pick up the full " |
|
1129 "packet\n"); |
|
1130 if (!adapter->ecdev) dev_kfree_skb_irq(skb); |
|
1131 if (staterr & E1000_RXD_STAT_EOP) |
|
1132 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1133 goto next_desc; |
|
1134 } |
|
1135 |
|
1136 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
|
1137 if (!adapter->ecdev) |
|
1138 dev_kfree_skb_irq(skb); |
|
1139 goto next_desc; |
|
1140 } |
|
1141 |
|
1142 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
1143 |
|
1144 if (!length) { |
|
1145 e_dbg("Last part of the packet spanning multiple " |
|
1146 "descriptors\n"); |
|
1147 if (!adapter->ecdev) |
|
1148 dev_kfree_skb_irq(skb); |
|
1149 goto next_desc; |
|
1150 } |
|
1151 |
|
1152 /* Good Receive */ |
|
1153 skb_put(skb, length); |
|
1154 |
|
1155 { |
|
1156 /* |
|
1157 * this looks ugly, but it seems compiler issues make it |
|
1158 * more efficient than reusing j |
|
1159 */ |
|
1160 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
1161 |
|
1162 /* |
|
1163 * page alloc/put takes too long and effects small packet |
|
1164 * throughput, so unsplit small packets and save the alloc/put |
|
1165 * only valid in softirq (napi) context to call kmap_* |
|
1166 */ |
|
1167 if (l1 && (l1 <= copybreak) && |
|
1168 ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
1169 u8 *vaddr; |
|
1170 |
|
1171 ps_page = &buffer_info->ps_pages[0]; |
|
1172 |
|
1173 /* |
|
1174 * there is no documentation about how to call |
|
1175 * kmap_atomic, so we can't hold the mapping |
|
1176 * very long |
|
1177 */ |
|
1178 dma_sync_single_for_cpu(&pdev->dev, ps_page->dma, |
|
1179 PAGE_SIZE, DMA_FROM_DEVICE); |
|
1180 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); |
|
1181 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
1182 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); |
|
1183 dma_sync_single_for_device(&pdev->dev, ps_page->dma, |
|
1184 PAGE_SIZE, DMA_FROM_DEVICE); |
|
1185 |
|
1186 /* remove the CRC */ |
|
1187 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) |
|
1188 l1 -= 4; |
|
1189 |
|
1190 skb_put(skb, l1); |
|
1191 goto copydone; |
|
1192 } /* if */ |
|
1193 } |
|
1194 |
|
1195 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1196 length = le16_to_cpu(rx_desc->wb.upper.length[j]); |
|
1197 if (!length) |
|
1198 break; |
|
1199 |
|
1200 ps_page = &buffer_info->ps_pages[j]; |
|
1201 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1202 DMA_FROM_DEVICE); |
|
1203 ps_page->dma = 0; |
|
1204 skb_add_rx_frag(skb, j, ps_page->page, 0, length); |
|
1205 ps_page->page = NULL; |
|
1206 } |
|
1207 |
|
1208 /* strip the ethernet crc, problem is we're using pages now so |
|
1209 * this whole operation can get a little cpu intensive |
|
1210 */ |
|
1211 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) |
|
1212 pskb_trim(skb, skb->len - 4); |
|
1213 |
|
1214 copydone: |
|
1215 total_rx_bytes += skb->len; |
|
1216 total_rx_packets++; |
|
1217 |
|
1218 e1000_rx_checksum(adapter, staterr, le16_to_cpu( |
|
1219 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
|
1220 |
|
1221 if (rx_desc->wb.upper.header_status & |
|
1222 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
|
1223 adapter->rx_hdr_split++; |
|
1224 |
|
1225 if (adapter->ecdev) { |
|
1226 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1227 adapter->ec_watchdog_jiffies = jiffies; |
|
1228 } else { |
|
1229 e1000_receive_skb(adapter, netdev, skb, |
|
1230 staterr, rx_desc->wb.middle.vlan); |
|
1231 } |
|
1232 |
|
1233 next_desc: |
|
1234 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
1235 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
1236 |
|
1237 /* return some buffers to hardware, one at a time is too slow */ |
|
1238 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1239 adapter->alloc_rx_buf(adapter, cleaned_count); |
|
1240 cleaned_count = 0; |
|
1241 } |
|
1242 |
|
1243 /* use prefetched values */ |
|
1244 rx_desc = next_rxd; |
|
1245 buffer_info = next_buffer; |
|
1246 |
|
1247 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1248 } |
|
1249 rx_ring->next_to_clean = i; |
|
1250 |
|
1251 cleaned_count = e1000_desc_unused(rx_ring); |
|
1252 if (cleaned_count) |
|
1253 adapter->alloc_rx_buf(adapter, cleaned_count); |
|
1254 |
|
1255 adapter->total_rx_bytes += total_rx_bytes; |
|
1256 adapter->total_rx_packets += total_rx_packets; |
|
1257 netdev->stats.rx_bytes += total_rx_bytes; |
|
1258 netdev->stats.rx_packets += total_rx_packets; |
|
1259 return cleaned; |
|
1260 } |
|
1261 |
|
1262 /** |
|
1263 * e1000_consume_page - helper function |
|
1264 **/ |
|
1265 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
1266 u16 length) |
|
1267 { |
|
1268 bi->page = NULL; |
|
1269 skb->len += length; |
|
1270 skb->data_len += length; |
|
1271 skb->truesize += length; |
|
1272 } |
|
1273 |
|
1274 /** |
|
1275 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
1276 * @adapter: board private structure |
|
1277 * |
|
1278 * the return value indicates whether actual cleaning was done, there |
|
1279 * is no guarantee that everything was cleaned |
|
1280 **/ |
|
1281 |
|
1282 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
|
1283 int *work_done, int work_to_do) |
|
1284 { |
|
1285 struct net_device *netdev = adapter->netdev; |
|
1286 struct pci_dev *pdev = adapter->pdev; |
|
1287 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1288 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
1289 struct e1000_buffer *buffer_info, *next_buffer; |
|
1290 u32 length; |
|
1291 unsigned int i; |
|
1292 int cleaned_count = 0; |
|
1293 bool cleaned = false; |
|
1294 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
1295 |
|
1296 i = rx_ring->next_to_clean; |
|
1297 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
1298 buffer_info = &rx_ring->buffer_info[i]; |
|
1299 |
|
1300 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
1301 struct sk_buff *skb; |
|
1302 u8 status; |
|
1303 |
|
1304 if (*work_done >= work_to_do) |
|
1305 break; |
|
1306 (*work_done)++; |
|
1307 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1308 |
|
1309 status = rx_desc->status; |
|
1310 skb = buffer_info->skb; |
|
1311 |
|
1312 if (!adapter->ecdev) |
|
1313 buffer_info->skb = NULL; |
|
1314 |
|
1315 ++i; |
|
1316 if (i == rx_ring->count) |
|
1317 i = 0; |
|
1318 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
1319 prefetch(next_rxd); |
|
1320 |
|
1321 next_buffer = &rx_ring->buffer_info[i]; |
|
1322 |
|
1323 cleaned = true; |
|
1324 cleaned_count++; |
|
1325 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
|
1326 DMA_FROM_DEVICE); |
|
1327 buffer_info->dma = 0; |
|
1328 |
|
1329 length = le16_to_cpu(rx_desc->length); |
|
1330 |
|
1331 /* errors is only valid for DD + EOP descriptors */ |
|
1332 if (!adapter->ecdev && unlikely((status & E1000_RXD_STAT_EOP) && |
|
1333 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { |
|
1334 /* recycle both page and skb */ |
|
1335 buffer_info->skb = skb; |
|
1336 /* an error means any chain goes out the window |
|
1337 * too */ |
|
1338 if (rx_ring->rx_skb_top) |
|
1339 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1340 rx_ring->rx_skb_top = NULL; |
|
1341 goto next_desc; |
|
1342 } |
|
1343 |
|
1344 #define rxtop rx_ring->rx_skb_top |
|
1345 if (!(status & E1000_RXD_STAT_EOP)) { |
|
1346 /* this descriptor is only the beginning (or middle) */ |
|
1347 if (!rxtop) { |
|
1348 /* this is the beginning of a chain */ |
|
1349 rxtop = skb; |
|
1350 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
1351 0, length); |
|
1352 } else { |
|
1353 /* this is the middle of a chain */ |
|
1354 skb_fill_page_desc(rxtop, |
|
1355 skb_shinfo(rxtop)->nr_frags, |
|
1356 buffer_info->page, 0, length); |
|
1357 /* re-use the skb, only consumed the page */ |
|
1358 buffer_info->skb = skb; |
|
1359 } |
|
1360 e1000_consume_page(buffer_info, rxtop, length); |
|
1361 goto next_desc; |
|
1362 } else { |
|
1363 if (rxtop) { |
|
1364 /* end of the chain */ |
|
1365 skb_fill_page_desc(rxtop, |
|
1366 skb_shinfo(rxtop)->nr_frags, |
|
1367 buffer_info->page, 0, length); |
|
1368 /* re-use the current skb, we only consumed the |
|
1369 * page */ |
|
1370 buffer_info->skb = skb; |
|
1371 skb = rxtop; |
|
1372 rxtop = NULL; |
|
1373 e1000_consume_page(buffer_info, skb, length); |
|
1374 } else { |
|
1375 /* no chain, got EOP, this buf is the packet |
|
1376 * copybreak to save the put_page/alloc_page */ |
|
1377 if (length <= copybreak && |
|
1378 skb_tailroom(skb) >= length) { |
|
1379 u8 *vaddr; |
|
1380 vaddr = kmap_atomic(buffer_info->page, |
|
1381 KM_SKB_DATA_SOFTIRQ); |
|
1382 memcpy(skb_tail_pointer(skb), vaddr, |
|
1383 length); |
|
1384 kunmap_atomic(vaddr, |
|
1385 KM_SKB_DATA_SOFTIRQ); |
|
1386 /* re-use the page, so don't erase |
|
1387 * buffer_info->page */ |
|
1388 skb_put(skb, length); |
|
1389 } else { |
|
1390 skb_fill_page_desc(skb, 0, |
|
1391 buffer_info->page, 0, |
|
1392 length); |
|
1393 e1000_consume_page(buffer_info, skb, |
|
1394 length); |
|
1395 } |
|
1396 } |
|
1397 } |
|
1398 |
|
1399 /* Receive Checksum Offload XXX recompute due to CRC strip? */ |
|
1400 e1000_rx_checksum(adapter, |
|
1401 (u32)(status) | |
|
1402 ((u32)(rx_desc->errors) << 24), |
|
1403 le16_to_cpu(rx_desc->csum), skb); |
|
1404 |
|
1405 /* probably a little skewed due to removing CRC */ |
|
1406 total_rx_bytes += skb->len; |
|
1407 total_rx_packets++; |
|
1408 |
|
1409 /* eth type trans needs skb->data to point to something */ |
|
1410 if (!adapter->ecdev && !pskb_may_pull(skb, ETH_HLEN)) { |
|
1411 e_err("pskb_may_pull failed.\n"); |
|
1412 dev_kfree_skb(skb); |
|
1413 goto next_desc; |
|
1414 } |
|
1415 |
|
1416 if (adapter->ecdev) { |
|
1417 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1418 adapter->ec_watchdog_jiffies = jiffies; |
|
1419 } else { |
|
1420 e1000_receive_skb(adapter, netdev, skb, status, |
|
1421 rx_desc->special); |
|
1422 } |
|
1423 |
|
1424 next_desc: |
|
1425 rx_desc->status = 0; |
|
1426 |
|
1427 /* return some buffers to hardware, one at a time is too slow */ |
|
1428 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
1429 adapter->alloc_rx_buf(adapter, cleaned_count); |
|
1430 cleaned_count = 0; |
|
1431 } |
|
1432 |
|
1433 /* use prefetched values */ |
|
1434 rx_desc = next_rxd; |
|
1435 buffer_info = next_buffer; |
|
1436 } |
|
1437 rx_ring->next_to_clean = i; |
|
1438 |
|
1439 cleaned_count = e1000_desc_unused(rx_ring); |
|
1440 if (cleaned_count) |
|
1441 adapter->alloc_rx_buf(adapter, cleaned_count); |
|
1442 |
|
1443 adapter->total_rx_bytes += total_rx_bytes; |
|
1444 adapter->total_rx_packets += total_rx_packets; |
|
1445 netdev->stats.rx_bytes += total_rx_bytes; |
|
1446 netdev->stats.rx_packets += total_rx_packets; |
|
1447 return cleaned; |
|
1448 } |
|
1449 |
|
1450 /** |
|
1451 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1452 * @adapter: board private structure |
|
1453 **/ |
|
1454 static void e1000_clean_rx_ring(struct e1000_adapter *adapter) |
|
1455 { |
|
1456 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1457 struct e1000_buffer *buffer_info; |
|
1458 struct e1000_ps_page *ps_page; |
|
1459 struct pci_dev *pdev = adapter->pdev; |
|
1460 unsigned int i, j; |
|
1461 |
|
1462 /* Free all the Rx ring sk_buffs */ |
|
1463 for (i = 0; i < rx_ring->count; i++) { |
|
1464 buffer_info = &rx_ring->buffer_info[i]; |
|
1465 if (buffer_info->dma) { |
|
1466 if (adapter->clean_rx == e1000_clean_rx_irq) |
|
1467 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1468 adapter->rx_buffer_len, |
|
1469 DMA_FROM_DEVICE); |
|
1470 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
|
1471 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
1472 PAGE_SIZE, |
|
1473 DMA_FROM_DEVICE); |
|
1474 else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
|
1475 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1476 adapter->rx_ps_bsize0, |
|
1477 DMA_FROM_DEVICE); |
|
1478 buffer_info->dma = 0; |
|
1479 } |
|
1480 |
|
1481 if (buffer_info->page) { |
|
1482 put_page(buffer_info->page); |
|
1483 buffer_info->page = NULL; |
|
1484 } |
|
1485 |
|
1486 if (buffer_info->skb) { |
|
1487 dev_kfree_skb(buffer_info->skb); |
|
1488 buffer_info->skb = NULL; |
|
1489 } |
|
1490 |
|
1491 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1492 ps_page = &buffer_info->ps_pages[j]; |
|
1493 if (!ps_page->page) |
|
1494 break; |
|
1495 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1496 DMA_FROM_DEVICE); |
|
1497 ps_page->dma = 0; |
|
1498 put_page(ps_page->page); |
|
1499 ps_page->page = NULL; |
|
1500 } |
|
1501 } |
|
1502 |
|
1503 /* there also may be some cached data from a chained receive */ |
|
1504 if (rx_ring->rx_skb_top) { |
|
1505 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1506 rx_ring->rx_skb_top = NULL; |
|
1507 } |
|
1508 |
|
1509 /* Zero out the descriptor ring */ |
|
1510 memset(rx_ring->desc, 0, rx_ring->size); |
|
1511 |
|
1512 rx_ring->next_to_clean = 0; |
|
1513 rx_ring->next_to_use = 0; |
|
1514 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1515 |
|
1516 writel(0, adapter->hw.hw_addr + rx_ring->head); |
|
1517 writel(0, adapter->hw.hw_addr + rx_ring->tail); |
|
1518 } |
|
1519 |
|
1520 static void e1000e_downshift_workaround(struct work_struct *work) |
|
1521 { |
|
1522 struct e1000_adapter *adapter = container_of(work, |
|
1523 struct e1000_adapter, downshift_task); |
|
1524 |
|
1525 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
|
1526 } |
|
1527 |
|
1528 /** |
|
1529 * e1000_intr_msi - Interrupt Handler |
|
1530 * @irq: interrupt number |
|
1531 * @data: pointer to a network interface device structure |
|
1532 **/ |
|
1533 static irqreturn_t e1000_intr_msi(int irq, void *data) |
|
1534 { |
|
1535 struct net_device *netdev = data; |
|
1536 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1537 struct e1000_hw *hw = &adapter->hw; |
|
1538 u32 icr = er32(ICR); |
|
1539 |
|
1540 if (adapter->ecdev) { |
|
1541 int ec_work_done = 0; |
|
1542 adapter->clean_rx(adapter, &ec_work_done, 100); |
|
1543 e1000_clean_tx_irq(adapter); |
|
1544 return IRQ_HANDLED; |
|
1545 } |
|
1546 /* |
|
1547 * read ICR disables interrupts using IAM |
|
1548 */ |
|
1549 |
|
1550 if (icr & E1000_ICR_LSC) { |
|
1551 hw->mac.get_link_status = 1; |
|
1552 /* |
|
1553 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1554 * disconnect (LSC) before accessing any PHY registers |
|
1555 */ |
|
1556 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1557 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1558 schedule_work(&adapter->downshift_task); |
|
1559 |
|
1560 /* |
|
1561 * 80003ES2LAN workaround-- For packet buffer work-around on |
|
1562 * link down event; disable receives here in the ISR and reset |
|
1563 * adapter in watchdog |
|
1564 */ |
|
1565 if (netif_carrier_ok(netdev) && |
|
1566 adapter->flags & FLAG_RX_NEEDS_RESTART) { |
|
1567 /* disable receives */ |
|
1568 u32 rctl = er32(RCTL); |
|
1569 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1570 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1571 } |
|
1572 /* guard against interrupt when we're going down */ |
|
1573 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1574 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1575 } |
|
1576 |
|
1577 if (napi_schedule_prep(&adapter->napi)) { |
|
1578 adapter->total_tx_bytes = 0; |
|
1579 adapter->total_tx_packets = 0; |
|
1580 adapter->total_rx_bytes = 0; |
|
1581 adapter->total_rx_packets = 0; |
|
1582 __napi_schedule(&adapter->napi); |
|
1583 } |
|
1584 |
|
1585 return IRQ_HANDLED; |
|
1586 } |
|
1587 |
|
1588 /** |
|
1589 * e1000_intr - Interrupt Handler |
|
1590 * @irq: interrupt number |
|
1591 * @data: pointer to a network interface device structure |
|
1592 **/ |
|
1593 static irqreturn_t e1000_intr(int irq, void *data) |
|
1594 { |
|
1595 struct net_device *netdev = data; |
|
1596 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1597 struct e1000_hw *hw = &adapter->hw; |
|
1598 u32 rctl, icr = er32(ICR); |
|
1599 |
|
1600 if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
|
1601 return IRQ_NONE; /* Not our interrupt */ |
|
1602 |
|
1603 /* |
|
1604 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
1605 * not set, then the adapter didn't send an interrupt |
|
1606 */ |
|
1607 if (!adapter->ecdev && !(icr & E1000_ICR_INT_ASSERTED)) |
|
1608 return IRQ_NONE; |
|
1609 |
|
1610 /* |
|
1611 * Interrupt Auto-Mask...upon reading ICR, |
|
1612 * interrupts are masked. No need for the |
|
1613 * IMC write |
|
1614 */ |
|
1615 |
|
1616 if (!adapter->ecdev && (icr & E1000_ICR_LSC)) { |
|
1617 hw->mac.get_link_status = 1; |
|
1618 /* |
|
1619 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1620 * disconnect (LSC) before accessing any PHY registers |
|
1621 */ |
|
1622 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1623 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1624 schedule_work(&adapter->downshift_task); |
|
1625 |
|
1626 /* |
|
1627 * 80003ES2LAN workaround-- |
|
1628 * For packet buffer work-around on link down event; |
|
1629 * disable receives here in the ISR and |
|
1630 * reset adapter in watchdog |
|
1631 */ |
|
1632 if (netif_carrier_ok(netdev) && |
|
1633 (adapter->flags & FLAG_RX_NEEDS_RESTART)) { |
|
1634 /* disable receives */ |
|
1635 rctl = er32(RCTL); |
|
1636 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1637 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1638 } |
|
1639 /* guard against interrupt when we're going down */ |
|
1640 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1641 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1642 } |
|
1643 |
|
1644 if (adapter->ecdev) { |
|
1645 int ec_work_done = 0; |
|
1646 adapter->clean_rx(adapter, &ec_work_done, 100); |
|
1647 e1000_clean_tx_irq(adapter); |
|
1648 return IRQ_HANDLED; |
|
1649 } |
|
1650 |
|
1651 if (napi_schedule_prep(&adapter->napi)) { |
|
1652 adapter->total_tx_bytes = 0; |
|
1653 adapter->total_tx_packets = 0; |
|
1654 adapter->total_rx_bytes = 0; |
|
1655 adapter->total_rx_packets = 0; |
|
1656 __napi_schedule(&adapter->napi); |
|
1657 } |
|
1658 |
|
1659 return IRQ_HANDLED; |
|
1660 } |
|
1661 |
|
1662 static irqreturn_t e1000_msix_other(int irq, void *data) |
|
1663 { |
|
1664 struct net_device *netdev = data; |
|
1665 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1666 struct e1000_hw *hw = &adapter->hw; |
|
1667 u32 icr = er32(ICR); |
|
1668 |
|
1669 if (!(icr & E1000_ICR_INT_ASSERTED)) { |
|
1670 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1671 ew32(IMS, E1000_IMS_OTHER); |
|
1672 return IRQ_NONE; |
|
1673 } |
|
1674 |
|
1675 if (icr & adapter->eiac_mask) |
|
1676 ew32(ICS, (icr & adapter->eiac_mask)); |
|
1677 |
|
1678 if (icr & E1000_ICR_OTHER) { |
|
1679 if (!(icr & E1000_ICR_LSC)) |
|
1680 goto no_link_interrupt; |
|
1681 hw->mac.get_link_status = 1; |
|
1682 /* guard against interrupt when we're going down */ |
|
1683 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
1684 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1685 } |
|
1686 |
|
1687 no_link_interrupt: |
|
1688 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1689 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); |
|
1690 |
|
1691 return IRQ_HANDLED; |
|
1692 } |
|
1693 |
|
1694 |
|
1695 static irqreturn_t e1000_intr_msix_tx(int irq, void *data) |
|
1696 { |
|
1697 struct net_device *netdev = data; |
|
1698 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1699 struct e1000_hw *hw = &adapter->hw; |
|
1700 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1701 |
|
1702 |
|
1703 adapter->total_tx_bytes = 0; |
|
1704 adapter->total_tx_packets = 0; |
|
1705 |
|
1706 if (!e1000_clean_tx_irq(adapter)) |
|
1707 /* Ring was not completely cleaned, so fire another interrupt */ |
|
1708 ew32(ICS, tx_ring->ims_val); |
|
1709 |
|
1710 return IRQ_HANDLED; |
|
1711 } |
|
1712 |
|
1713 static irqreturn_t e1000_intr_msix_rx(int irq, void *data) |
|
1714 { |
|
1715 struct net_device *netdev = data; |
|
1716 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1717 |
|
1718 /* Write the ITR value calculated at the end of the |
|
1719 * previous interrupt. |
|
1720 */ |
|
1721 if (adapter->rx_ring->set_itr) { |
|
1722 writel(1000000000 / (adapter->rx_ring->itr_val * 256), |
|
1723 adapter->hw.hw_addr + adapter->rx_ring->itr_register); |
|
1724 adapter->rx_ring->set_itr = 0; |
|
1725 } |
|
1726 |
|
1727 if (adapter->ecdev) { |
|
1728 int ec_work_done = 0; |
|
1729 adapter->clean_rx(adapter, &ec_work_done, 100); |
|
1730 } else { |
|
1731 if (napi_schedule_prep(&adapter->napi)) { |
|
1732 adapter->total_rx_bytes = 0; |
|
1733 adapter->total_rx_packets = 0; |
|
1734 __napi_schedule(&adapter->napi); |
|
1735 } |
|
1736 } |
|
1737 return IRQ_HANDLED; |
|
1738 } |
|
1739 |
|
1740 /** |
|
1741 * e1000_configure_msix - Configure MSI-X hardware |
|
1742 * |
|
1743 * e1000_configure_msix sets up the hardware to properly |
|
1744 * generate MSI-X interrupts. |
|
1745 **/ |
|
1746 static void e1000_configure_msix(struct e1000_adapter *adapter) |
|
1747 { |
|
1748 struct e1000_hw *hw = &adapter->hw; |
|
1749 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1750 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1751 int vector = 0; |
|
1752 u32 ctrl_ext, ivar = 0; |
|
1753 |
|
1754 adapter->eiac_mask = 0; |
|
1755 |
|
1756 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ |
|
1757 if (hw->mac.type == e1000_82574) { |
|
1758 u32 rfctl = er32(RFCTL); |
|
1759 rfctl |= E1000_RFCTL_ACK_DIS; |
|
1760 ew32(RFCTL, rfctl); |
|
1761 } |
|
1762 |
|
1763 #define E1000_IVAR_INT_ALLOC_VALID 0x8 |
|
1764 /* Configure Rx vector */ |
|
1765 rx_ring->ims_val = E1000_IMS_RXQ0; |
|
1766 adapter->eiac_mask |= rx_ring->ims_val; |
|
1767 if (rx_ring->itr_val) |
|
1768 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1769 hw->hw_addr + rx_ring->itr_register); |
|
1770 else |
|
1771 writel(1, hw->hw_addr + rx_ring->itr_register); |
|
1772 ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
|
1773 |
|
1774 /* Configure Tx vector */ |
|
1775 tx_ring->ims_val = E1000_IMS_TXQ0; |
|
1776 vector++; |
|
1777 if (tx_ring->itr_val) |
|
1778 writel(1000000000 / (tx_ring->itr_val * 256), |
|
1779 hw->hw_addr + tx_ring->itr_register); |
|
1780 else |
|
1781 writel(1, hw->hw_addr + tx_ring->itr_register); |
|
1782 adapter->eiac_mask |= tx_ring->ims_val; |
|
1783 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); |
|
1784 |
|
1785 /* set vector for Other Causes, e.g. link changes */ |
|
1786 vector++; |
|
1787 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); |
|
1788 if (rx_ring->itr_val) |
|
1789 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1790 hw->hw_addr + E1000_EITR_82574(vector)); |
|
1791 else |
|
1792 writel(1, hw->hw_addr + E1000_EITR_82574(vector)); |
|
1793 |
|
1794 /* Cause Tx interrupts on every write back */ |
|
1795 ivar |= (1 << 31); |
|
1796 |
|
1797 ew32(IVAR, ivar); |
|
1798 |
|
1799 /* enable MSI-X PBA support */ |
|
1800 ctrl_ext = er32(CTRL_EXT); |
|
1801 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; |
|
1802 |
|
1803 /* Auto-Mask Other interrupts upon ICR read */ |
|
1804 #define E1000_EIAC_MASK_82574 0x01F00000 |
|
1805 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
|
1806 ctrl_ext |= E1000_CTRL_EXT_EIAME; |
|
1807 ew32(CTRL_EXT, ctrl_ext); |
|
1808 e1e_flush(); |
|
1809 } |
|
1810 |
|
1811 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) |
|
1812 { |
|
1813 if (adapter->msix_entries) { |
|
1814 pci_disable_msix(adapter->pdev); |
|
1815 kfree(adapter->msix_entries); |
|
1816 adapter->msix_entries = NULL; |
|
1817 } else if (adapter->flags & FLAG_MSI_ENABLED) { |
|
1818 pci_disable_msi(adapter->pdev); |
|
1819 adapter->flags &= ~FLAG_MSI_ENABLED; |
|
1820 } |
|
1821 } |
|
1822 |
|
1823 /** |
|
1824 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported |
|
1825 * |
|
1826 * Attempt to configure interrupts using the best available |
|
1827 * capabilities of the hardware and kernel. |
|
1828 **/ |
|
1829 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) |
|
1830 { |
|
1831 int err; |
|
1832 int i; |
|
1833 |
|
1834 switch (adapter->int_mode) { |
|
1835 case E1000E_INT_MODE_MSIX: |
|
1836 if (adapter->flags & FLAG_HAS_MSIX) { |
|
1837 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
|
1838 adapter->msix_entries = kcalloc(adapter->num_vectors, |
|
1839 sizeof(struct msix_entry), |
|
1840 GFP_KERNEL); |
|
1841 if (adapter->msix_entries) { |
|
1842 for (i = 0; i < adapter->num_vectors; i++) |
|
1843 adapter->msix_entries[i].entry = i; |
|
1844 |
|
1845 err = pci_enable_msix(adapter->pdev, |
|
1846 adapter->msix_entries, |
|
1847 adapter->num_vectors); |
|
1848 if (err == 0) { |
|
1849 return; |
|
1850 } |
|
1851 } |
|
1852 /* MSI-X failed, so fall through and try MSI */ |
|
1853 e_err("Failed to initialize MSI-X interrupts. " |
|
1854 "Falling back to MSI interrupts.\n"); |
|
1855 e1000e_reset_interrupt_capability(adapter); |
|
1856 } |
|
1857 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
1858 /* Fall through */ |
|
1859 case E1000E_INT_MODE_MSI: |
|
1860 if (!pci_enable_msi(adapter->pdev)) { |
|
1861 adapter->flags |= FLAG_MSI_ENABLED; |
|
1862 } else { |
|
1863 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
1864 e_err("Failed to initialize MSI interrupts. Falling " |
|
1865 "back to legacy interrupts.\n"); |
|
1866 } |
|
1867 /* Fall through */ |
|
1868 case E1000E_INT_MODE_LEGACY: |
|
1869 /* Don't do anything; this is the system default */ |
|
1870 break; |
|
1871 } |
|
1872 |
|
1873 /* store the number of vectors being used */ |
|
1874 adapter->num_vectors = 1; |
|
1875 } |
|
1876 |
|
1877 /** |
|
1878 * e1000_request_msix - Initialize MSI-X interrupts |
|
1879 * |
|
1880 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the |
|
1881 * kernel. |
|
1882 **/ |
|
1883 static int e1000_request_msix(struct e1000_adapter *adapter) |
|
1884 { |
|
1885 struct net_device *netdev = adapter->netdev; |
|
1886 int err = 0, vector = 0; |
|
1887 |
|
1888 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
1889 sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); |
|
1890 else |
|
1891 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); |
|
1892 err = request_irq(adapter->msix_entries[vector].vector, |
|
1893 e1000_intr_msix_rx, entropy ? IRQF_SAMPLE_RANDOM : 0, |
|
1894 adapter->rx_ring->name, netdev); |
|
1895 if (err) |
|
1896 goto out; |
|
1897 adapter->rx_ring->itr_register = E1000_EITR_82574(vector); |
|
1898 adapter->rx_ring->itr_val = adapter->itr; |
|
1899 vector++; |
|
1900 |
|
1901 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
1902 sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); |
|
1903 else |
|
1904 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); |
|
1905 err = request_irq(adapter->msix_entries[vector].vector, |
|
1906 e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
|
1907 netdev); |
|
1908 if (err) |
|
1909 goto out; |
|
1910 adapter->tx_ring->itr_register = E1000_EITR_82574(vector); |
|
1911 adapter->tx_ring->itr_val = adapter->itr; |
|
1912 vector++; |
|
1913 |
|
1914 err = request_irq(adapter->msix_entries[vector].vector, |
|
1915 e1000_msix_other, 0, netdev->name, netdev); |
|
1916 if (err) |
|
1917 goto out; |
|
1918 |
|
1919 e1000_configure_msix(adapter); |
|
1920 return 0; |
|
1921 out: |
|
1922 return err; |
|
1923 } |
|
1924 |
|
1925 /** |
|
1926 * e1000_request_irq - initialize interrupts |
|
1927 * |
|
1928 * Attempts to configure interrupts using the best available |
|
1929 * capabilities of the hardware and kernel. |
|
1930 **/ |
|
1931 static int e1000_request_irq(struct e1000_adapter *adapter) |
|
1932 { |
|
1933 struct net_device *netdev = adapter->netdev; |
|
1934 int err; |
|
1935 int irq_flags = 0; |
|
1936 |
|
1937 if (adapter->ecdev) |
|
1938 return 0; |
|
1939 |
|
1940 if (adapter->msix_entries) { |
|
1941 err = e1000_request_msix(adapter); |
|
1942 if (!err) |
|
1943 return err; |
|
1944 /* fall back to MSI */ |
|
1945 e1000e_reset_interrupt_capability(adapter); |
|
1946 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
1947 e1000e_set_interrupt_capability(adapter); |
|
1948 } |
|
1949 if (adapter->flags & FLAG_MSI_ENABLED) { |
|
1950 err = request_irq(adapter->pdev->irq, e1000_intr_msi, |
|
1951 entropy ? IRQF_SAMPLE_RANDOM : 0, |
|
1952 netdev->name, netdev); |
|
1953 if (!err) |
|
1954 return err; |
|
1955 |
|
1956 /* fall back to legacy interrupt */ |
|
1957 e1000e_reset_interrupt_capability(adapter); |
|
1958 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
1959 } |
|
1960 |
|
1961 if (entropy) |
|
1962 irq_flags |= IRQF_SAMPLE_RANDOM; |
|
1963 err = request_irq(adapter->pdev->irq, e1000_intr, |
|
1964 irq_flags | IRQF_SHARED, netdev->name, netdev); |
|
1965 if (err) |
|
1966 e_err("Unable to allocate interrupt, Error: %d\n", err); |
|
1967 |
|
1968 return err; |
|
1969 } |
|
1970 |
|
1971 static void e1000_free_irq(struct e1000_adapter *adapter) |
|
1972 { |
|
1973 struct net_device *netdev = adapter->netdev; |
|
1974 |
|
1975 if (adapter->ecdev) |
|
1976 return; |
|
1977 |
|
1978 if (adapter->msix_entries) { |
|
1979 int vector = 0; |
|
1980 |
|
1981 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
1982 vector++; |
|
1983 |
|
1984 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
1985 vector++; |
|
1986 |
|
1987 /* Other Causes interrupt vector */ |
|
1988 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
1989 return; |
|
1990 } |
|
1991 |
|
1992 free_irq(adapter->pdev->irq, netdev); |
|
1993 } |
|
1994 |
|
1995 /** |
|
1996 * e1000_irq_disable - Mask off interrupt generation on the NIC |
|
1997 **/ |
|
1998 static void e1000_irq_disable(struct e1000_adapter *adapter) |
|
1999 { |
|
2000 struct e1000_hw *hw = &adapter->hw; |
|
2001 |
|
2002 if (adapter->ecdev) |
|
2003 return; |
|
2004 |
|
2005 ew32(IMC, ~0); |
|
2006 if (adapter->msix_entries) |
|
2007 ew32(EIAC_82574, 0); |
|
2008 e1e_flush(); |
|
2009 |
|
2010 if (adapter->msix_entries) { |
|
2011 int i; |
|
2012 for (i = 0; i < adapter->num_vectors; i++) |
|
2013 synchronize_irq(adapter->msix_entries[i].vector); |
|
2014 } else { |
|
2015 synchronize_irq(adapter->pdev->irq); |
|
2016 } |
|
2017 } |
|
2018 |
|
2019 /** |
|
2020 * e1000_irq_enable - Enable default interrupt generation settings |
|
2021 **/ |
|
2022 static void e1000_irq_enable(struct e1000_adapter *adapter) |
|
2023 { |
|
2024 struct e1000_hw *hw = &adapter->hw; |
|
2025 |
|
2026 if (adapter->ecdev) |
|
2027 return; |
|
2028 |
|
2029 if (adapter->msix_entries) { |
|
2030 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); |
|
2031 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); |
|
2032 } else { |
|
2033 ew32(IMS, IMS_ENABLE_MASK); |
|
2034 } |
|
2035 e1e_flush(); |
|
2036 } |
|
2037 |
|
2038 /** |
|
2039 * e1000_get_hw_control - get control of the h/w from f/w |
|
2040 * @adapter: address of board private structure |
|
2041 * |
|
2042 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2043 * For ASF and Pass Through versions of f/w this means that |
|
2044 * the driver is loaded. For AMT version (only with 82573) |
|
2045 * of the f/w this means that the network i/f is open. |
|
2046 **/ |
|
2047 static void e1000_get_hw_control(struct e1000_adapter *adapter) |
|
2048 { |
|
2049 struct e1000_hw *hw = &adapter->hw; |
|
2050 u32 ctrl_ext; |
|
2051 u32 swsm; |
|
2052 |
|
2053 /* Let firmware know the driver has taken over */ |
|
2054 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2055 swsm = er32(SWSM); |
|
2056 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
|
2057 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2058 ctrl_ext = er32(CTRL_EXT); |
|
2059 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
2060 } |
|
2061 } |
|
2062 |
|
2063 /** |
|
2064 * e1000_release_hw_control - release control of the h/w to f/w |
|
2065 * @adapter: address of board private structure |
|
2066 * |
|
2067 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2068 * For ASF and Pass Through versions of f/w this means that the |
|
2069 * driver is no longer loaded. For AMT version (only with 82573) i |
|
2070 * of the f/w this means that the network i/f is closed. |
|
2071 * |
|
2072 **/ |
|
2073 static void e1000_release_hw_control(struct e1000_adapter *adapter) |
|
2074 { |
|
2075 struct e1000_hw *hw = &adapter->hw; |
|
2076 u32 ctrl_ext; |
|
2077 u32 swsm; |
|
2078 |
|
2079 /* Let firmware taken over control of h/w */ |
|
2080 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2081 swsm = er32(SWSM); |
|
2082 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
|
2083 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2084 ctrl_ext = er32(CTRL_EXT); |
|
2085 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
|
2086 } |
|
2087 } |
|
2088 |
|
2089 /** |
|
2090 * @e1000_alloc_ring - allocate memory for a ring structure |
|
2091 **/ |
|
2092 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, |
|
2093 struct e1000_ring *ring) |
|
2094 { |
|
2095 struct pci_dev *pdev = adapter->pdev; |
|
2096 |
|
2097 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, |
|
2098 GFP_KERNEL); |
|
2099 if (!ring->desc) |
|
2100 return -ENOMEM; |
|
2101 |
|
2102 return 0; |
|
2103 } |
|
2104 |
|
2105 /** |
|
2106 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) |
|
2107 * @adapter: board private structure |
|
2108 * |
|
2109 * Return 0 on success, negative on failure |
|
2110 **/ |
|
2111 int e1000e_setup_tx_resources(struct e1000_adapter *adapter) |
|
2112 { |
|
2113 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2114 int err = -ENOMEM, size; |
|
2115 |
|
2116 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2117 tx_ring->buffer_info = vmalloc(size); |
|
2118 if (!tx_ring->buffer_info) |
|
2119 goto err; |
|
2120 memset(tx_ring->buffer_info, 0, size); |
|
2121 |
|
2122 /* round up to nearest 4K */ |
|
2123 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2124 tx_ring->size = ALIGN(tx_ring->size, 4096); |
|
2125 |
|
2126 err = e1000_alloc_ring_dma(adapter, tx_ring); |
|
2127 if (err) |
|
2128 goto err; |
|
2129 |
|
2130 tx_ring->next_to_use = 0; |
|
2131 tx_ring->next_to_clean = 0; |
|
2132 |
|
2133 return 0; |
|
2134 err: |
|
2135 vfree(tx_ring->buffer_info); |
|
2136 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2137 return err; |
|
2138 } |
|
2139 |
|
2140 /** |
|
2141 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) |
|
2142 * @adapter: board private structure |
|
2143 * |
|
2144 * Returns 0 on success, negative on failure |
|
2145 **/ |
|
2146 int e1000e_setup_rx_resources(struct e1000_adapter *adapter) |
|
2147 { |
|
2148 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
2149 struct e1000_buffer *buffer_info; |
|
2150 int i, size, desc_len, err = -ENOMEM; |
|
2151 |
|
2152 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2153 rx_ring->buffer_info = vmalloc(size); |
|
2154 if (!rx_ring->buffer_info) |
|
2155 goto err; |
|
2156 memset(rx_ring->buffer_info, 0, size); |
|
2157 |
|
2158 for (i = 0; i < rx_ring->count; i++) { |
|
2159 buffer_info = &rx_ring->buffer_info[i]; |
|
2160 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, |
|
2161 sizeof(struct e1000_ps_page), |
|
2162 GFP_KERNEL); |
|
2163 if (!buffer_info->ps_pages) |
|
2164 goto err_pages; |
|
2165 } |
|
2166 |
|
2167 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
2168 |
|
2169 /* Round up to nearest 4K */ |
|
2170 rx_ring->size = rx_ring->count * desc_len; |
|
2171 rx_ring->size = ALIGN(rx_ring->size, 4096); |
|
2172 |
|
2173 err = e1000_alloc_ring_dma(adapter, rx_ring); |
|
2174 if (err) |
|
2175 goto err_pages; |
|
2176 |
|
2177 rx_ring->next_to_clean = 0; |
|
2178 rx_ring->next_to_use = 0; |
|
2179 rx_ring->rx_skb_top = NULL; |
|
2180 |
|
2181 return 0; |
|
2182 |
|
2183 err_pages: |
|
2184 for (i = 0; i < rx_ring->count; i++) { |
|
2185 buffer_info = &rx_ring->buffer_info[i]; |
|
2186 kfree(buffer_info->ps_pages); |
|
2187 } |
|
2188 err: |
|
2189 vfree(rx_ring->buffer_info); |
|
2190 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2191 return err; |
|
2192 } |
|
2193 |
|
2194 /** |
|
2195 * e1000_clean_tx_ring - Free Tx Buffers |
|
2196 * @adapter: board private structure |
|
2197 **/ |
|
2198 static void e1000_clean_tx_ring(struct e1000_adapter *adapter) |
|
2199 { |
|
2200 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2201 struct e1000_buffer *buffer_info; |
|
2202 unsigned long size; |
|
2203 unsigned int i; |
|
2204 |
|
2205 for (i = 0; i < tx_ring->count; i++) { |
|
2206 buffer_info = &tx_ring->buffer_info[i]; |
|
2207 e1000_put_txbuf(adapter, buffer_info); |
|
2208 } |
|
2209 |
|
2210 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2211 memset(tx_ring->buffer_info, 0, size); |
|
2212 |
|
2213 memset(tx_ring->desc, 0, tx_ring->size); |
|
2214 |
|
2215 tx_ring->next_to_use = 0; |
|
2216 tx_ring->next_to_clean = 0; |
|
2217 |
|
2218 writel(0, adapter->hw.hw_addr + tx_ring->head); |
|
2219 writel(0, adapter->hw.hw_addr + tx_ring->tail); |
|
2220 } |
|
2221 |
|
2222 /** |
|
2223 * e1000e_free_tx_resources - Free Tx Resources per Queue |
|
2224 * @adapter: board private structure |
|
2225 * |
|
2226 * Free all transmit software resources |
|
2227 **/ |
|
2228 void e1000e_free_tx_resources(struct e1000_adapter *adapter) |
|
2229 { |
|
2230 struct pci_dev *pdev = adapter->pdev; |
|
2231 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2232 |
|
2233 e1000_clean_tx_ring(adapter); |
|
2234 |
|
2235 vfree(tx_ring->buffer_info); |
|
2236 tx_ring->buffer_info = NULL; |
|
2237 |
|
2238 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
2239 tx_ring->dma); |
|
2240 tx_ring->desc = NULL; |
|
2241 } |
|
2242 |
|
2243 /** |
|
2244 * e1000e_free_rx_resources - Free Rx Resources |
|
2245 * @adapter: board private structure |
|
2246 * |
|
2247 * Free all receive software resources |
|
2248 **/ |
|
2249 |
|
2250 void e1000e_free_rx_resources(struct e1000_adapter *adapter) |
|
2251 { |
|
2252 struct pci_dev *pdev = adapter->pdev; |
|
2253 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
2254 int i; |
|
2255 |
|
2256 e1000_clean_rx_ring(adapter); |
|
2257 |
|
2258 for (i = 0; i < rx_ring->count; i++) { |
|
2259 kfree(rx_ring->buffer_info[i].ps_pages); |
|
2260 } |
|
2261 |
|
2262 vfree(rx_ring->buffer_info); |
|
2263 rx_ring->buffer_info = NULL; |
|
2264 |
|
2265 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2266 rx_ring->dma); |
|
2267 rx_ring->desc = NULL; |
|
2268 } |
|
2269 |
|
2270 /** |
|
2271 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2272 * @adapter: pointer to adapter |
|
2273 * @itr_setting: current adapter->itr |
|
2274 * @packets: the number of packets during this measurement interval |
|
2275 * @bytes: the number of bytes during this measurement interval |
|
2276 * |
|
2277 * Stores a new ITR value based on packets and byte |
|
2278 * counts during the last interrupt. The advantage of per interrupt |
|
2279 * computation is faster updates and more accurate ITR for the current |
|
2280 * traffic pattern. Constants in this function were computed |
|
2281 * based on theoretical maximum wire speed and thresholds were set based |
|
2282 * on testing data as well as attempting to minimize response time |
|
2283 * while increasing bulk throughput. This functionality is controlled |
|
2284 * by the InterruptThrottleRate module parameter. |
|
2285 **/ |
|
2286 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2287 u16 itr_setting, int packets, |
|
2288 int bytes) |
|
2289 { |
|
2290 unsigned int retval = itr_setting; |
|
2291 |
|
2292 if (packets == 0) |
|
2293 goto update_itr_done; |
|
2294 |
|
2295 switch (itr_setting) { |
|
2296 case lowest_latency: |
|
2297 /* handle TSO and jumbo frames */ |
|
2298 if (bytes/packets > 8000) |
|
2299 retval = bulk_latency; |
|
2300 else if ((packets < 5) && (bytes > 512)) { |
|
2301 retval = low_latency; |
|
2302 } |
|
2303 break; |
|
2304 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2305 if (bytes > 10000) { |
|
2306 /* this if handles the TSO accounting */ |
|
2307 if (bytes/packets > 8000) { |
|
2308 retval = bulk_latency; |
|
2309 } else if ((packets < 10) || ((bytes/packets) > 1200)) { |
|
2310 retval = bulk_latency; |
|
2311 } else if ((packets > 35)) { |
|
2312 retval = lowest_latency; |
|
2313 } |
|
2314 } else if (bytes/packets > 2000) { |
|
2315 retval = bulk_latency; |
|
2316 } else if (packets <= 2 && bytes < 512) { |
|
2317 retval = lowest_latency; |
|
2318 } |
|
2319 break; |
|
2320 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2321 if (bytes > 25000) { |
|
2322 if (packets > 35) { |
|
2323 retval = low_latency; |
|
2324 } |
|
2325 } else if (bytes < 6000) { |
|
2326 retval = low_latency; |
|
2327 } |
|
2328 break; |
|
2329 } |
|
2330 |
|
2331 update_itr_done: |
|
2332 return retval; |
|
2333 } |
|
2334 |
|
2335 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2336 { |
|
2337 struct e1000_hw *hw = &adapter->hw; |
|
2338 u16 current_itr; |
|
2339 u32 new_itr = adapter->itr; |
|
2340 |
|
2341 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2342 if (adapter->link_speed != SPEED_1000) { |
|
2343 current_itr = 0; |
|
2344 new_itr = 4000; |
|
2345 goto set_itr_now; |
|
2346 } |
|
2347 |
|
2348 if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
2349 new_itr = 0; |
|
2350 goto set_itr_now; |
|
2351 } |
|
2352 |
|
2353 adapter->tx_itr = e1000_update_itr(adapter, |
|
2354 adapter->tx_itr, |
|
2355 adapter->total_tx_packets, |
|
2356 adapter->total_tx_bytes); |
|
2357 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2358 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2359 adapter->tx_itr = low_latency; |
|
2360 |
|
2361 adapter->rx_itr = e1000_update_itr(adapter, |
|
2362 adapter->rx_itr, |
|
2363 adapter->total_rx_packets, |
|
2364 adapter->total_rx_bytes); |
|
2365 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2366 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2367 adapter->rx_itr = low_latency; |
|
2368 |
|
2369 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2370 |
|
2371 switch (current_itr) { |
|
2372 /* counts and packets in update_itr are dependent on these numbers */ |
|
2373 case lowest_latency: |
|
2374 new_itr = 70000; |
|
2375 break; |
|
2376 case low_latency: |
|
2377 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2378 break; |
|
2379 case bulk_latency: |
|
2380 new_itr = 4000; |
|
2381 break; |
|
2382 default: |
|
2383 break; |
|
2384 } |
|
2385 |
|
2386 set_itr_now: |
|
2387 if (new_itr != adapter->itr) { |
|
2388 /* |
|
2389 * this attempts to bias the interrupt rate towards Bulk |
|
2390 * by adding intermediate steps when interrupt rate is |
|
2391 * increasing |
|
2392 */ |
|
2393 new_itr = new_itr > adapter->itr ? |
|
2394 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2395 new_itr; |
|
2396 adapter->itr = new_itr; |
|
2397 adapter->rx_ring->itr_val = new_itr; |
|
2398 if (adapter->msix_entries) |
|
2399 adapter->rx_ring->set_itr = 1; |
|
2400 else |
|
2401 if (new_itr) |
|
2402 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2403 else |
|
2404 ew32(ITR, 0); |
|
2405 } |
|
2406 } |
|
2407 |
|
2408 /** |
|
2409 * e1000_alloc_queues - Allocate memory for all rings |
|
2410 * @adapter: board private structure to initialize |
|
2411 **/ |
|
2412 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
2413 { |
|
2414 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); |
|
2415 if (!adapter->tx_ring) |
|
2416 goto err; |
|
2417 |
|
2418 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); |
|
2419 if (!adapter->rx_ring) |
|
2420 goto err; |
|
2421 |
|
2422 return 0; |
|
2423 err: |
|
2424 e_err("Unable to allocate memory for queues\n"); |
|
2425 kfree(adapter->rx_ring); |
|
2426 kfree(adapter->tx_ring); |
|
2427 return -ENOMEM; |
|
2428 } |
|
2429 |
|
2430 /** |
|
2431 * e1000_clean - NAPI Rx polling callback |
|
2432 * @napi: struct associated with this polling callback |
|
2433 * @budget: amount of packets driver is allowed to process this poll |
|
2434 **/ |
|
2435 static int e1000_clean(struct napi_struct *napi, int budget) |
|
2436 { |
|
2437 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
2438 struct e1000_hw *hw = &adapter->hw; |
|
2439 struct net_device *poll_dev = adapter->netdev; |
|
2440 int tx_cleaned = 1, work_done = 0; |
|
2441 |
|
2442 adapter = netdev_priv(poll_dev); |
|
2443 |
|
2444 if (adapter->msix_entries && |
|
2445 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) |
|
2446 goto clean_rx; |
|
2447 |
|
2448 tx_cleaned = e1000_clean_tx_irq(adapter); |
|
2449 |
|
2450 clean_rx: |
|
2451 adapter->clean_rx(adapter, &work_done, budget); |
|
2452 |
|
2453 if (!tx_cleaned) |
|
2454 work_done = budget; |
|
2455 |
|
2456 /* If budget not fully consumed, exit the polling mode */ |
|
2457 if (work_done < budget) { |
|
2458 if (adapter->itr_setting & 3) |
|
2459 e1000_set_itr(adapter); |
|
2460 napi_complete(napi); |
|
2461 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
2462 if (adapter->msix_entries) |
|
2463 ew32(IMS, adapter->rx_ring->ims_val); |
|
2464 else |
|
2465 e1000_irq_enable(adapter); |
|
2466 } |
|
2467 } |
|
2468 |
|
2469 return work_done; |
|
2470 } |
|
2471 |
|
2472 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
2473 { |
|
2474 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2475 struct e1000_hw *hw = &adapter->hw; |
|
2476 u32 vfta, index; |
|
2477 |
|
2478 /* don't update vlan cookie if already programmed */ |
|
2479 if ((adapter->hw.mng_cookie.status & |
|
2480 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2481 (vid == adapter->mng_vlan_id)) |
|
2482 return; |
|
2483 |
|
2484 /* add VID to filter table */ |
|
2485 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2486 index = (vid >> 5) & 0x7F; |
|
2487 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2488 vfta |= (1 << (vid & 0x1F)); |
|
2489 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2490 } |
|
2491 } |
|
2492 |
|
2493 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
2494 { |
|
2495 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2496 struct e1000_hw *hw = &adapter->hw; |
|
2497 u32 vfta, index; |
|
2498 |
|
2499 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
2500 e1000_irq_disable(adapter); |
|
2501 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
2502 |
|
2503 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
2504 e1000_irq_enable(adapter); |
|
2505 |
|
2506 if ((adapter->hw.mng_cookie.status & |
|
2507 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2508 (vid == adapter->mng_vlan_id)) { |
|
2509 /* release control to f/w */ |
|
2510 e1000_release_hw_control(adapter); |
|
2511 return; |
|
2512 } |
|
2513 |
|
2514 /* remove VID from filter table */ |
|
2515 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2516 index = (vid >> 5) & 0x7F; |
|
2517 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2518 vfta &= ~(1 << (vid & 0x1F)); |
|
2519 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2520 } |
|
2521 } |
|
2522 |
|
2523 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
|
2524 { |
|
2525 struct net_device *netdev = adapter->netdev; |
|
2526 u16 vid = adapter->hw.mng_cookie.vlan_id; |
|
2527 u16 old_vid = adapter->mng_vlan_id; |
|
2528 |
|
2529 if (!adapter->vlgrp) |
|
2530 return; |
|
2531 |
|
2532 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
|
2533 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2534 if (adapter->hw.mng_cookie.status & |
|
2535 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
|
2536 e1000_vlan_rx_add_vid(netdev, vid); |
|
2537 adapter->mng_vlan_id = vid; |
|
2538 } |
|
2539 |
|
2540 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
|
2541 (vid != old_vid) && |
|
2542 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
|
2543 e1000_vlan_rx_kill_vid(netdev, old_vid); |
|
2544 } else { |
|
2545 adapter->mng_vlan_id = vid; |
|
2546 } |
|
2547 } |
|
2548 |
|
2549 |
|
2550 static void e1000_vlan_rx_register(struct net_device *netdev, |
|
2551 struct vlan_group *grp) |
|
2552 { |
|
2553 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2554 struct e1000_hw *hw = &adapter->hw; |
|
2555 u32 ctrl, rctl; |
|
2556 |
|
2557 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
2558 e1000_irq_disable(adapter); |
|
2559 adapter->vlgrp = grp; |
|
2560 |
|
2561 if (grp) { |
|
2562 /* enable VLAN tag insert/strip */ |
|
2563 ctrl = er32(CTRL); |
|
2564 ctrl |= E1000_CTRL_VME; |
|
2565 ew32(CTRL, ctrl); |
|
2566 |
|
2567 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2568 /* enable VLAN receive filtering */ |
|
2569 rctl = er32(RCTL); |
|
2570 rctl &= ~E1000_RCTL_CFIEN; |
|
2571 ew32(RCTL, rctl); |
|
2572 e1000_update_mng_vlan(adapter); |
|
2573 } |
|
2574 } else { |
|
2575 /* disable VLAN tag insert/strip */ |
|
2576 ctrl = er32(CTRL); |
|
2577 ctrl &= ~E1000_CTRL_VME; |
|
2578 ew32(CTRL, ctrl); |
|
2579 |
|
2580 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2581 if (adapter->mng_vlan_id != |
|
2582 (u16)E1000_MNG_VLAN_NONE) { |
|
2583 e1000_vlan_rx_kill_vid(netdev, |
|
2584 adapter->mng_vlan_id); |
|
2585 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2586 } |
|
2587 } |
|
2588 } |
|
2589 |
|
2590 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
2591 e1000_irq_enable(adapter); |
|
2592 } |
|
2593 |
|
2594 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
2595 { |
|
2596 u16 vid; |
|
2597 |
|
2598 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
2599 |
|
2600 if (!adapter->vlgrp) |
|
2601 return; |
|
2602 |
|
2603 for (vid = 0; vid < VLAN_N_VID; vid++) { |
|
2604 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
2605 continue; |
|
2606 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
2607 } |
|
2608 } |
|
2609 |
|
2610 static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
|
2611 { |
|
2612 struct e1000_hw *hw = &adapter->hw; |
|
2613 u32 manc, manc2h, mdef, i, j; |
|
2614 |
|
2615 if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) |
|
2616 return; |
|
2617 |
|
2618 manc = er32(MANC); |
|
2619 |
|
2620 /* |
|
2621 * enable receiving management packets to the host. this will probably |
|
2622 * generate destination unreachable messages from the host OS, but |
|
2623 * the packets will be handled on SMBUS |
|
2624 */ |
|
2625 manc |= E1000_MANC_EN_MNG2HOST; |
|
2626 manc2h = er32(MANC2H); |
|
2627 |
|
2628 switch (hw->mac.type) { |
|
2629 default: |
|
2630 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); |
|
2631 break; |
|
2632 case e1000_82574: |
|
2633 case e1000_82583: |
|
2634 /* |
|
2635 * Check if IPMI pass-through decision filter already exists; |
|
2636 * if so, enable it. |
|
2637 */ |
|
2638 for (i = 0, j = 0; i < 8; i++) { |
|
2639 mdef = er32(MDEF(i)); |
|
2640 |
|
2641 /* Ignore filters with anything other than IPMI ports */ |
|
2642 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2643 continue; |
|
2644 |
|
2645 /* Enable this decision filter in MANC2H */ |
|
2646 if (mdef) |
|
2647 manc2h |= (1 << i); |
|
2648 |
|
2649 j |= mdef; |
|
2650 } |
|
2651 |
|
2652 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2653 break; |
|
2654 |
|
2655 /* Create new decision filter in an empty filter */ |
|
2656 for (i = 0, j = 0; i < 8; i++) |
|
2657 if (er32(MDEF(i)) == 0) { |
|
2658 ew32(MDEF(i), (E1000_MDEF_PORT_623 | |
|
2659 E1000_MDEF_PORT_664)); |
|
2660 manc2h |= (1 << 1); |
|
2661 j++; |
|
2662 break; |
|
2663 } |
|
2664 |
|
2665 if (!j) |
|
2666 e_warn("Unable to create IPMI pass-through filter\n"); |
|
2667 break; |
|
2668 } |
|
2669 |
|
2670 ew32(MANC2H, manc2h); |
|
2671 ew32(MANC, manc); |
|
2672 } |
|
2673 |
|
2674 /** |
|
2675 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
2676 * @adapter: board private structure |
|
2677 * |
|
2678 * Configure the Tx unit of the MAC after a reset. |
|
2679 **/ |
|
2680 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
2681 { |
|
2682 struct e1000_hw *hw = &adapter->hw; |
|
2683 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2684 u64 tdba; |
|
2685 u32 tdlen, tctl, tipg, tarc; |
|
2686 u32 ipgr1, ipgr2; |
|
2687 |
|
2688 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
2689 tdba = tx_ring->dma; |
|
2690 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2691 ew32(TDBAL, (tdba & DMA_BIT_MASK(32))); |
|
2692 ew32(TDBAH, (tdba >> 32)); |
|
2693 ew32(TDLEN, tdlen); |
|
2694 ew32(TDH, 0); |
|
2695 ew32(TDT, 0); |
|
2696 tx_ring->head = E1000_TDH; |
|
2697 tx_ring->tail = E1000_TDT; |
|
2698 |
|
2699 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
2700 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ |
|
2701 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ |
|
2702 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ |
|
2703 |
|
2704 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) |
|
2705 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ |
|
2706 |
|
2707 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
2708 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
2709 ew32(TIPG, tipg); |
|
2710 |
|
2711 /* Set the Tx Interrupt Delay register */ |
|
2712 ew32(TIDV, adapter->tx_int_delay); |
|
2713 /* Tx irq moderation */ |
|
2714 ew32(TADV, adapter->tx_abs_int_delay); |
|
2715 |
|
2716 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
2717 u32 txdctl = er32(TXDCTL(0)); |
|
2718 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
|
2719 E1000_TXDCTL_WTHRESH); |
|
2720 /* |
|
2721 * set up some performance related parameters to encourage the |
|
2722 * hardware to use the bus more efficiently in bursts, depends |
|
2723 * on the tx_int_delay to be enabled, |
|
2724 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time |
|
2725 * hthresh = 1 ==> prefetch when one or more available |
|
2726 * pthresh = 0x1f ==> prefetch if internal cache 31 or less |
|
2727 * BEWARE: this seems to work but should be considered first if |
|
2728 * there are tx hangs or other tx related bugs |
|
2729 */ |
|
2730 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; |
|
2731 ew32(TXDCTL(0), txdctl); |
|
2732 /* erratum work around: set txdctl the same for both queues */ |
|
2733 ew32(TXDCTL(1), txdctl); |
|
2734 } |
|
2735 |
|
2736 /* Program the Transmit Control Register */ |
|
2737 tctl = er32(TCTL); |
|
2738 tctl &= ~E1000_TCTL_CT; |
|
2739 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
2740 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
2741 |
|
2742 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
|
2743 tarc = er32(TARC(0)); |
|
2744 /* |
|
2745 * set the speed mode bit, we'll clear it if we're not at |
|
2746 * gigabit link later |
|
2747 */ |
|
2748 #define SPEED_MODE_BIT (1 << 21) |
|
2749 tarc |= SPEED_MODE_BIT; |
|
2750 ew32(TARC(0), tarc); |
|
2751 } |
|
2752 |
|
2753 /* errata: program both queues to unweighted RR */ |
|
2754 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { |
|
2755 tarc = er32(TARC(0)); |
|
2756 tarc |= 1; |
|
2757 ew32(TARC(0), tarc); |
|
2758 tarc = er32(TARC(1)); |
|
2759 tarc |= 1; |
|
2760 ew32(TARC(1), tarc); |
|
2761 } |
|
2762 |
|
2763 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
2764 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
2765 |
|
2766 /* only set IDE if we are delaying interrupts using the timers */ |
|
2767 if (adapter->tx_int_delay) |
|
2768 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
2769 |
|
2770 /* enable Report Status bit */ |
|
2771 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
2772 |
|
2773 ew32(TCTL, tctl); |
|
2774 |
|
2775 e1000e_config_collision_dist(hw); |
|
2776 } |
|
2777 |
|
2778 /** |
|
2779 * e1000_setup_rctl - configure the receive control registers |
|
2780 * @adapter: Board private structure |
|
2781 **/ |
|
2782 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
2783 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
2784 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
2785 { |
|
2786 struct e1000_hw *hw = &adapter->hw; |
|
2787 u32 rctl, rfctl; |
|
2788 u32 psrctl = 0; |
|
2789 u32 pages = 0; |
|
2790 |
|
2791 /* Workaround Si errata on 82579 - configure jumbo frame flow */ |
|
2792 if (hw->mac.type == e1000_pch2lan) { |
|
2793 s32 ret_val; |
|
2794 |
|
2795 if (adapter->netdev->mtu > ETH_DATA_LEN) |
|
2796 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); |
|
2797 else |
|
2798 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); |
|
2799 } |
|
2800 |
|
2801 /* Program MC offset vector base */ |
|
2802 rctl = er32(RCTL); |
|
2803 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
2804 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
2805 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
2806 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
2807 |
|
2808 /* Do not Store bad packets */ |
|
2809 rctl &= ~E1000_RCTL_SBP; |
|
2810 |
|
2811 /* Enable Long Packet receive */ |
|
2812 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
2813 rctl &= ~E1000_RCTL_LPE; |
|
2814 else |
|
2815 rctl |= E1000_RCTL_LPE; |
|
2816 |
|
2817 /* Some systems expect that the CRC is included in SMBUS traffic. The |
|
2818 * hardware strips the CRC before sending to both SMBUS (BMC) and to |
|
2819 * host memory when this is enabled |
|
2820 */ |
|
2821 if (adapter->flags2 & FLAG2_CRC_STRIPPING) |
|
2822 rctl |= E1000_RCTL_SECRC; |
|
2823 |
|
2824 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
|
2825 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { |
|
2826 u16 phy_data; |
|
2827 |
|
2828 e1e_rphy(hw, PHY_REG(770, 26), &phy_data); |
|
2829 phy_data &= 0xfff8; |
|
2830 phy_data |= (1 << 2); |
|
2831 e1e_wphy(hw, PHY_REG(770, 26), phy_data); |
|
2832 |
|
2833 e1e_rphy(hw, 22, &phy_data); |
|
2834 phy_data &= 0x0fff; |
|
2835 phy_data |= (1 << 14); |
|
2836 e1e_wphy(hw, 0x10, 0x2823); |
|
2837 e1e_wphy(hw, 0x11, 0x0003); |
|
2838 e1e_wphy(hw, 22, phy_data); |
|
2839 } |
|
2840 |
|
2841 /* Setup buffer sizes */ |
|
2842 rctl &= ~E1000_RCTL_SZ_4096; |
|
2843 rctl |= E1000_RCTL_BSEX; |
|
2844 switch (adapter->rx_buffer_len) { |
|
2845 case 2048: |
|
2846 default: |
|
2847 rctl |= E1000_RCTL_SZ_2048; |
|
2848 rctl &= ~E1000_RCTL_BSEX; |
|
2849 break; |
|
2850 case 4096: |
|
2851 rctl |= E1000_RCTL_SZ_4096; |
|
2852 break; |
|
2853 case 8192: |
|
2854 rctl |= E1000_RCTL_SZ_8192; |
|
2855 break; |
|
2856 case 16384: |
|
2857 rctl |= E1000_RCTL_SZ_16384; |
|
2858 break; |
|
2859 } |
|
2860 |
|
2861 /* |
|
2862 * 82571 and greater support packet-split where the protocol |
|
2863 * header is placed in skb->data and the packet data is |
|
2864 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
2865 * In the case of a non-split, skb->data is linearly filled, |
|
2866 * followed by the page buffers. Therefore, skb->data is |
|
2867 * sized to hold the largest protocol header. |
|
2868 * |
|
2869 * allocations using alloc_page take too long for regular MTU |
|
2870 * so only enable packet split for jumbo frames |
|
2871 * |
|
2872 * Using pages when the page size is greater than 16k wastes |
|
2873 * a lot of memory, since we allocate 3 pages at all times |
|
2874 * per packet. |
|
2875 */ |
|
2876 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
2877 if (!(adapter->flags & FLAG_HAS_ERT) && (pages <= 3) && |
|
2878 (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
|
2879 adapter->rx_ps_pages = pages; |
|
2880 else |
|
2881 adapter->rx_ps_pages = 0; |
|
2882 |
|
2883 if (adapter->rx_ps_pages) { |
|
2884 /* Configure extra packet-split registers */ |
|
2885 rfctl = er32(RFCTL); |
|
2886 rfctl |= E1000_RFCTL_EXTEN; |
|
2887 /* |
|
2888 * disable packet split support for IPv6 extension headers, |
|
2889 * because some malformed IPv6 headers can hang the Rx |
|
2890 */ |
|
2891 rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
|
2892 E1000_RFCTL_NEW_IPV6_EXT_DIS); |
|
2893 |
|
2894 ew32(RFCTL, rfctl); |
|
2895 |
|
2896 /* Enable Packet split descriptors */ |
|
2897 rctl |= E1000_RCTL_DTYP_PS; |
|
2898 |
|
2899 psrctl |= adapter->rx_ps_bsize0 >> |
|
2900 E1000_PSRCTL_BSIZE0_SHIFT; |
|
2901 |
|
2902 switch (adapter->rx_ps_pages) { |
|
2903 case 3: |
|
2904 psrctl |= PAGE_SIZE << |
|
2905 E1000_PSRCTL_BSIZE3_SHIFT; |
|
2906 case 2: |
|
2907 psrctl |= PAGE_SIZE << |
|
2908 E1000_PSRCTL_BSIZE2_SHIFT; |
|
2909 case 1: |
|
2910 psrctl |= PAGE_SIZE >> |
|
2911 E1000_PSRCTL_BSIZE1_SHIFT; |
|
2912 break; |
|
2913 } |
|
2914 |
|
2915 ew32(PSRCTL, psrctl); |
|
2916 } |
|
2917 |
|
2918 ew32(RCTL, rctl); |
|
2919 /* just started the receive unit, no need to restart */ |
|
2920 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
2921 } |
|
2922 |
|
2923 /** |
|
2924 * e1000_configure_rx - Configure Receive Unit after Reset |
|
2925 * @adapter: board private structure |
|
2926 * |
|
2927 * Configure the Rx unit of the MAC after a reset. |
|
2928 **/ |
|
2929 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
2930 { |
|
2931 struct e1000_hw *hw = &adapter->hw; |
|
2932 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
2933 u64 rdba; |
|
2934 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
2935 |
|
2936 if (adapter->rx_ps_pages) { |
|
2937 /* this is a 32 byte descriptor */ |
|
2938 rdlen = rx_ring->count * |
|
2939 sizeof(union e1000_rx_desc_packet_split); |
|
2940 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
2941 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
2942 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
2943 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); |
|
2944 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
2945 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
2946 } else { |
|
2947 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); |
|
2948 adapter->clean_rx = e1000_clean_rx_irq; |
|
2949 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
2950 } |
|
2951 |
|
2952 /* disable receives while setting up the descriptors */ |
|
2953 rctl = er32(RCTL); |
|
2954 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
2955 e1e_flush(); |
|
2956 msleep(10); |
|
2957 |
|
2958 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
2959 /* |
|
2960 * set the writeback threshold (only takes effect if the RDTR |
|
2961 * is set). set GRAN=1 and write back up to 0x4 worth, and |
|
2962 * enable prefetching of 0x20 rx descriptors |
|
2963 * granularity = 01 |
|
2964 * wthresh = 04, |
|
2965 * hthresh = 04, |
|
2966 * pthresh = 0x20 |
|
2967 */ |
|
2968 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
2969 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
2970 |
|
2971 /* |
|
2972 * override the delay timers for enabling bursting, only if |
|
2973 * the value was not set by the user via module options |
|
2974 */ |
|
2975 if (adapter->rx_int_delay == DEFAULT_RDTR) |
|
2976 adapter->rx_int_delay = BURST_RDTR; |
|
2977 if (adapter->rx_abs_int_delay == DEFAULT_RADV) |
|
2978 adapter->rx_abs_int_delay = BURST_RADV; |
|
2979 } |
|
2980 |
|
2981 /* set the Receive Delay Timer Register */ |
|
2982 ew32(RDTR, adapter->rx_int_delay); |
|
2983 |
|
2984 /* irq moderation */ |
|
2985 ew32(RADV, adapter->rx_abs_int_delay); |
|
2986 if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
|
2987 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
2988 |
|
2989 ctrl_ext = er32(CTRL_EXT); |
|
2990 /* Auto-Mask interrupts upon ICR access */ |
|
2991 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
2992 ew32(IAM, 0xffffffff); |
|
2993 ew32(CTRL_EXT, ctrl_ext); |
|
2994 e1e_flush(); |
|
2995 |
|
2996 /* |
|
2997 * Setup the HW Rx Head and Tail Descriptor Pointers and |
|
2998 * the Base and Length of the Rx Descriptor Ring |
|
2999 */ |
|
3000 rdba = rx_ring->dma; |
|
3001 ew32(RDBAL, (rdba & DMA_BIT_MASK(32))); |
|
3002 ew32(RDBAH, (rdba >> 32)); |
|
3003 ew32(RDLEN, rdlen); |
|
3004 ew32(RDH, 0); |
|
3005 ew32(RDT, 0); |
|
3006 rx_ring->head = E1000_RDH; |
|
3007 rx_ring->tail = E1000_RDT; |
|
3008 |
|
3009 /* Enable Receive Checksum Offload for TCP and UDP */ |
|
3010 rxcsum = er32(RXCSUM); |
|
3011 if (adapter->flags & FLAG_RX_CSUM_ENABLED) { |
|
3012 rxcsum |= E1000_RXCSUM_TUOFL; |
|
3013 |
|
3014 /* |
|
3015 * IPv4 payload checksum for UDP fragments must be |
|
3016 * used in conjunction with packet-split. |
|
3017 */ |
|
3018 if (adapter->rx_ps_pages) |
|
3019 rxcsum |= E1000_RXCSUM_IPPCSE; |
|
3020 } else { |
|
3021 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
3022 /* no need to clear IPPCSE as it defaults to 0 */ |
|
3023 } |
|
3024 ew32(RXCSUM, rxcsum); |
|
3025 |
|
3026 /* |
|
3027 * Enable early receives on supported devices, only takes effect when |
|
3028 * packet size is equal or larger than the specified value (in 8 byte |
|
3029 * units), e.g. using jumbo frames when setting to E1000_ERT_2048 |
|
3030 */ |
|
3031 if ((adapter->flags & FLAG_HAS_ERT) || |
|
3032 (adapter->hw.mac.type == e1000_pch2lan)) { |
|
3033 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3034 u32 rxdctl = er32(RXDCTL(0)); |
|
3035 ew32(RXDCTL(0), rxdctl | 0x3); |
|
3036 if (adapter->flags & FLAG_HAS_ERT) |
|
3037 ew32(ERT, E1000_ERT_2048 | (1 << 13)); |
|
3038 /* |
|
3039 * With jumbo frames and early-receive enabled, |
|
3040 * excessive C-state transition latencies result in |
|
3041 * dropped transactions. |
|
3042 */ |
|
3043 pm_qos_update_request( |
|
3044 &adapter->netdev->pm_qos_req, 55); |
|
3045 } else { |
|
3046 pm_qos_update_request( |
|
3047 &adapter->netdev->pm_qos_req, |
|
3048 PM_QOS_DEFAULT_VALUE); |
|
3049 } |
|
3050 } |
|
3051 |
|
3052 /* Enable Receives */ |
|
3053 ew32(RCTL, rctl); |
|
3054 } |
|
3055 |
|
3056 /** |
|
3057 * e1000_update_mc_addr_list - Update Multicast addresses |
|
3058 * @hw: pointer to the HW structure |
|
3059 * @mc_addr_list: array of multicast addresses to program |
|
3060 * @mc_addr_count: number of multicast addresses to program |
|
3061 * |
|
3062 * Updates the Multicast Table Array. |
|
3063 * The caller must have a packed mc_addr_list of multicast addresses. |
|
3064 **/ |
|
3065 static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list, |
|
3066 u32 mc_addr_count) |
|
3067 { |
|
3068 hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count); |
|
3069 } |
|
3070 |
|
3071 /** |
|
3072 * e1000_set_multi - Multicast and Promiscuous mode set |
|
3073 * @netdev: network interface device structure |
|
3074 * |
|
3075 * The set_multi entry point is called whenever the multicast address |
|
3076 * list or the network interface flags are updated. This routine is |
|
3077 * responsible for configuring the hardware for proper multicast, |
|
3078 * promiscuous mode, and all-multi behavior. |
|
3079 **/ |
|
3080 static void e1000_set_multi(struct net_device *netdev) |
|
3081 { |
|
3082 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3083 struct e1000_hw *hw = &adapter->hw; |
|
3084 struct netdev_hw_addr *ha; |
|
3085 u8 *mta_list; |
|
3086 u32 rctl; |
|
3087 int i; |
|
3088 |
|
3089 /* Check for Promiscuous and All Multicast modes */ |
|
3090 |
|
3091 rctl = er32(RCTL); |
|
3092 |
|
3093 if (netdev->flags & IFF_PROMISC) { |
|
3094 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3095 rctl &= ~E1000_RCTL_VFE; |
|
3096 } else { |
|
3097 if (netdev->flags & IFF_ALLMULTI) { |
|
3098 rctl |= E1000_RCTL_MPE; |
|
3099 rctl &= ~E1000_RCTL_UPE; |
|
3100 } else { |
|
3101 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3102 } |
|
3103 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
3104 rctl |= E1000_RCTL_VFE; |
|
3105 } |
|
3106 |
|
3107 ew32(RCTL, rctl); |
|
3108 |
|
3109 if (!netdev_mc_empty(netdev)) { |
|
3110 mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); |
|
3111 if (!mta_list) |
|
3112 return; |
|
3113 |
|
3114 /* prepare a packed array of only addresses. */ |
|
3115 i = 0; |
|
3116 netdev_for_each_mc_addr(ha, netdev) |
|
3117 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
|
3118 |
|
3119 e1000_update_mc_addr_list(hw, mta_list, i); |
|
3120 kfree(mta_list); |
|
3121 } else { |
|
3122 /* |
|
3123 * if we're called from probe, we might not have |
|
3124 * anything to do here, so clear out the list |
|
3125 */ |
|
3126 e1000_update_mc_addr_list(hw, NULL, 0); |
|
3127 } |
|
3128 } |
|
3129 |
|
3130 /** |
|
3131 * e1000_configure - configure the hardware for Rx and Tx |
|
3132 * @adapter: private board structure |
|
3133 **/ |
|
3134 static void e1000_configure(struct e1000_adapter *adapter) |
|
3135 { |
|
3136 e1000_set_multi(adapter->netdev); |
|
3137 |
|
3138 e1000_restore_vlan(adapter); |
|
3139 e1000_init_manageability_pt(adapter); |
|
3140 |
|
3141 e1000_configure_tx(adapter); |
|
3142 e1000_setup_rctl(adapter); |
|
3143 e1000_configure_rx(adapter); |
|
3144 |
|
3145 if (adapter->ecdev) { |
|
3146 adapter->alloc_rx_buf(adapter, adapter->rx_ring->count); |
|
3147 } else { |
|
3148 adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring)); |
|
3149 } |
|
3150 } |
|
3151 |
|
3152 /** |
|
3153 * e1000e_power_up_phy - restore link in case the phy was powered down |
|
3154 * @adapter: address of board private structure |
|
3155 * |
|
3156 * The phy may be powered down to save power and turn off link when the |
|
3157 * driver is unloaded and wake on lan is not enabled (among others) |
|
3158 * *** this routine MUST be followed by a call to e1000e_reset *** |
|
3159 **/ |
|
3160 void e1000e_power_up_phy(struct e1000_adapter *adapter) |
|
3161 { |
|
3162 if (adapter->hw.phy.ops.power_up) |
|
3163 adapter->hw.phy.ops.power_up(&adapter->hw); |
|
3164 |
|
3165 adapter->hw.mac.ops.setup_link(&adapter->hw); |
|
3166 } |
|
3167 |
|
3168 /** |
|
3169 * e1000_power_down_phy - Power down the PHY |
|
3170 * |
|
3171 * Power down the PHY so no link is implied when interface is down. |
|
3172 * The PHY cannot be powered down if management or WoL is active. |
|
3173 */ |
|
3174 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
3175 { |
|
3176 /* WoL is enabled */ |
|
3177 if (adapter->wol) |
|
3178 return; |
|
3179 |
|
3180 if (adapter->hw.phy.ops.power_down) |
|
3181 adapter->hw.phy.ops.power_down(&adapter->hw); |
|
3182 } |
|
3183 |
|
3184 /** |
|
3185 * e1000e_reset - bring the hardware into a known good state |
|
3186 * |
|
3187 * This function boots the hardware and enables some settings that |
|
3188 * require a configuration cycle of the hardware - those cannot be |
|
3189 * set/changed during runtime. After reset the device needs to be |
|
3190 * properly configured for Rx, Tx etc. |
|
3191 */ |
|
3192 void e1000e_reset(struct e1000_adapter *adapter) |
|
3193 { |
|
3194 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
3195 struct e1000_fc_info *fc = &adapter->hw.fc; |
|
3196 struct e1000_hw *hw = &adapter->hw; |
|
3197 u32 tx_space, min_tx_space, min_rx_space; |
|
3198 u32 pba = adapter->pba; |
|
3199 u16 hwm; |
|
3200 |
|
3201 /* reset Packet Buffer Allocation to default */ |
|
3202 ew32(PBA, pba); |
|
3203 |
|
3204 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3205 /* |
|
3206 * To maintain wire speed transmits, the Tx FIFO should be |
|
3207 * large enough to accommodate two full transmit packets, |
|
3208 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
3209 * the Rx FIFO should be large enough to accommodate at least |
|
3210 * one full receive packet and is similarly rounded up and |
|
3211 * expressed in KB. |
|
3212 */ |
|
3213 pba = er32(PBA); |
|
3214 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
3215 tx_space = pba >> 16; |
|
3216 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
3217 pba &= 0xffff; |
|
3218 /* |
|
3219 * the Tx fifo also stores 16 bytes of information about the tx |
|
3220 * but don't include ethernet FCS because hardware appends it |
|
3221 */ |
|
3222 min_tx_space = (adapter->max_frame_size + |
|
3223 sizeof(struct e1000_tx_desc) - |
|
3224 ETH_FCS_LEN) * 2; |
|
3225 min_tx_space = ALIGN(min_tx_space, 1024); |
|
3226 min_tx_space >>= 10; |
|
3227 /* software strips receive CRC, so leave room for it */ |
|
3228 min_rx_space = adapter->max_frame_size; |
|
3229 min_rx_space = ALIGN(min_rx_space, 1024); |
|
3230 min_rx_space >>= 10; |
|
3231 |
|
3232 /* |
|
3233 * If current Tx allocation is less than the min Tx FIFO size, |
|
3234 * and the min Tx FIFO size is less than the current Rx FIFO |
|
3235 * allocation, take space away from current Rx allocation |
|
3236 */ |
|
3237 if ((tx_space < min_tx_space) && |
|
3238 ((min_tx_space - tx_space) < pba)) { |
|
3239 pba -= min_tx_space - tx_space; |
|
3240 |
|
3241 /* |
|
3242 * if short on Rx space, Rx wins and must trump tx |
|
3243 * adjustment or use Early Receive if available |
|
3244 */ |
|
3245 if ((pba < min_rx_space) && |
|
3246 (!(adapter->flags & FLAG_HAS_ERT))) |
|
3247 /* ERT enabled in e1000_configure_rx */ |
|
3248 pba = min_rx_space; |
|
3249 } |
|
3250 |
|
3251 ew32(PBA, pba); |
|
3252 } |
|
3253 |
|
3254 |
|
3255 /* |
|
3256 * flow control settings |
|
3257 * |
|
3258 * The high water mark must be low enough to fit one full frame |
|
3259 * (or the size used for early receive) above it in the Rx FIFO. |
|
3260 * Set it to the lower of: |
|
3261 * - 90% of the Rx FIFO size, and |
|
3262 * - the full Rx FIFO size minus the early receive size (for parts |
|
3263 * with ERT support assuming ERT set to E1000_ERT_2048), or |
|
3264 * - the full Rx FIFO size minus one full frame |
|
3265 */ |
|
3266 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
|
3267 fc->pause_time = 0xFFFF; |
|
3268 else |
|
3269 fc->pause_time = E1000_FC_PAUSE_TIME; |
|
3270 fc->send_xon = 1; |
|
3271 fc->current_mode = fc->requested_mode; |
|
3272 |
|
3273 switch (hw->mac.type) { |
|
3274 default: |
|
3275 if ((adapter->flags & FLAG_HAS_ERT) && |
|
3276 (adapter->netdev->mtu > ETH_DATA_LEN)) |
|
3277 hwm = min(((pba << 10) * 9 / 10), |
|
3278 ((pba << 10) - (E1000_ERT_2048 << 3))); |
|
3279 else |
|
3280 hwm = min(((pba << 10) * 9 / 10), |
|
3281 ((pba << 10) - adapter->max_frame_size)); |
|
3282 |
|
3283 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
|
3284 fc->low_water = fc->high_water - 8; |
|
3285 break; |
|
3286 case e1000_pchlan: |
|
3287 /* |
|
3288 * Workaround PCH LOM adapter hangs with certain network |
|
3289 * loads. If hangs persist, try disabling Tx flow control. |
|
3290 */ |
|
3291 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3292 fc->high_water = 0x3500; |
|
3293 fc->low_water = 0x1500; |
|
3294 } else { |
|
3295 fc->high_water = 0x5000; |
|
3296 fc->low_water = 0x3000; |
|
3297 } |
|
3298 fc->refresh_time = 0x1000; |
|
3299 break; |
|
3300 case e1000_pch2lan: |
|
3301 fc->high_water = 0x05C20; |
|
3302 fc->low_water = 0x05048; |
|
3303 fc->pause_time = 0x0650; |
|
3304 fc->refresh_time = 0x0400; |
|
3305 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3306 pba = 14; |
|
3307 ew32(PBA, pba); |
|
3308 } |
|
3309 break; |
|
3310 } |
|
3311 |
|
3312 /* |
|
3313 * Disable Adaptive Interrupt Moderation if 2 full packets cannot |
|
3314 * fit in receive buffer and early-receive not supported. |
|
3315 */ |
|
3316 if (adapter->itr_setting & 0x3) { |
|
3317 if (((adapter->max_frame_size * 2) > (pba << 10)) && |
|
3318 !(adapter->flags & FLAG_HAS_ERT)) { |
|
3319 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
|
3320 dev_info(&adapter->pdev->dev, |
|
3321 "Interrupt Throttle Rate turned off\n"); |
|
3322 adapter->flags2 |= FLAG2_DISABLE_AIM; |
|
3323 ew32(ITR, 0); |
|
3324 } |
|
3325 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
3326 dev_info(&adapter->pdev->dev, |
|
3327 "Interrupt Throttle Rate turned on\n"); |
|
3328 adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
|
3329 adapter->itr = 20000; |
|
3330 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
3331 } |
|
3332 } |
|
3333 |
|
3334 /* Allow time for pending master requests to run */ |
|
3335 mac->ops.reset_hw(hw); |
|
3336 |
|
3337 /* |
|
3338 * For parts with AMT enabled, let the firmware know |
|
3339 * that the network interface is in control |
|
3340 */ |
|
3341 if (adapter->flags & FLAG_HAS_AMT) |
|
3342 e1000_get_hw_control(adapter); |
|
3343 |
|
3344 ew32(WUC, 0); |
|
3345 |
|
3346 if (mac->ops.init_hw(hw)) |
|
3347 e_err("Hardware Error\n"); |
|
3348 |
|
3349 e1000_update_mng_vlan(adapter); |
|
3350 |
|
3351 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
3352 ew32(VET, ETH_P_8021Q); |
|
3353 |
|
3354 e1000e_reset_adaptive(hw); |
|
3355 e1000_get_phy_info(hw); |
|
3356 |
|
3357 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
|
3358 !(adapter->flags & FLAG_SMART_POWER_DOWN)) { |
|
3359 u16 phy_data = 0; |
|
3360 /* |
|
3361 * speed up time to link by disabling smart power down, ignore |
|
3362 * the return value of this function because there is nothing |
|
3363 * different we would do if it failed |
|
3364 */ |
|
3365 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
|
3366 phy_data &= ~IGP02E1000_PM_SPD; |
|
3367 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); |
|
3368 } |
|
3369 } |
|
3370 |
|
3371 int e1000e_up(struct e1000_adapter *adapter) |
|
3372 { |
|
3373 struct e1000_hw *hw = &adapter->hw; |
|
3374 |
|
3375 /* hardware has been reset, we need to reload some things */ |
|
3376 e1000_configure(adapter); |
|
3377 |
|
3378 clear_bit(__E1000_DOWN, &adapter->state); |
|
3379 |
|
3380 if (!adapter->ecdev) { |
|
3381 napi_enable(&adapter->napi); |
|
3382 } |
|
3383 if (adapter->msix_entries) |
|
3384 e1000_configure_msix(adapter); |
|
3385 if (!adapter->ecdev) { |
|
3386 e1000_irq_enable(adapter); |
|
3387 |
|
3388 netif_wake_queue(adapter->netdev); |
|
3389 |
|
3390 /* fire a link change interrupt to start the watchdog */ |
|
3391 if (adapter->msix_entries) |
|
3392 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3393 else |
|
3394 ew32(ICS, E1000_ICS_LSC); |
|
3395 } |
|
3396 |
|
3397 return 0; |
|
3398 } |
|
3399 |
|
3400 void e1000e_down(struct e1000_adapter *adapter) |
|
3401 { |
|
3402 struct net_device *netdev = adapter->netdev; |
|
3403 struct e1000_hw *hw = &adapter->hw; |
|
3404 u32 tctl, rctl; |
|
3405 |
|
3406 /* |
|
3407 * signal that we're down so the interrupt handler does not |
|
3408 * reschedule our watchdog timer |
|
3409 */ |
|
3410 set_bit(__E1000_DOWN, &adapter->state); |
|
3411 |
|
3412 /* disable receives in the hardware */ |
|
3413 rctl = er32(RCTL); |
|
3414 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3415 /* flush and sleep below */ |
|
3416 |
|
3417 if (!adapter->ecdev) |
|
3418 netif_stop_queue(netdev); |
|
3419 |
|
3420 /* disable transmits in the hardware */ |
|
3421 tctl = er32(TCTL); |
|
3422 tctl &= ~E1000_TCTL_EN; |
|
3423 ew32(TCTL, tctl); |
|
3424 /* flush both disables and wait for them to finish */ |
|
3425 e1e_flush(); |
|
3426 msleep(10); |
|
3427 |
|
3428 if (!adapter->ecdev) { |
|
3429 napi_disable(&adapter->napi); |
|
3430 e1000_irq_disable(adapter); |
|
3431 del_timer_sync(&adapter->watchdog_timer); |
|
3432 del_timer_sync(&adapter->phy_info_timer); |
|
3433 } |
|
3434 |
|
3435 if (adapter->ecdev) { |
|
3436 ecdev_set_link(adapter->ecdev, 0); |
|
3437 } else { |
|
3438 netif_carrier_off(netdev); |
|
3439 } |
|
3440 adapter->link_speed = 0; |
|
3441 adapter->link_duplex = 0; |
|
3442 |
|
3443 if (!pci_channel_offline(adapter->pdev)) |
|
3444 e1000e_reset(adapter); |
|
3445 e1000_clean_tx_ring(adapter); |
|
3446 e1000_clean_rx_ring(adapter); |
|
3447 |
|
3448 /* |
|
3449 * TODO: for power management, we could drop the link and |
|
3450 * pci_disable_device here. |
|
3451 */ |
|
3452 } |
|
3453 |
|
3454 void e1000e_reinit_locked(struct e1000_adapter *adapter) |
|
3455 { |
|
3456 might_sleep(); |
|
3457 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
3458 msleep(1); |
|
3459 e1000e_down(adapter); |
|
3460 e1000e_up(adapter); |
|
3461 clear_bit(__E1000_RESETTING, &adapter->state); |
|
3462 } |
|
3463 |
|
3464 /** |
|
3465 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
3466 * @adapter: board private structure to initialize |
|
3467 * |
|
3468 * e1000_sw_init initializes the Adapter private data structure. |
|
3469 * Fields are initialized based on PCI device information and |
|
3470 * OS network device settings (MTU size). |
|
3471 **/ |
|
3472 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
3473 { |
|
3474 struct net_device *netdev = adapter->netdev; |
|
3475 |
|
3476 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
|
3477 adapter->rx_ps_bsize0 = 128; |
|
3478 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
|
3479 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
|
3480 |
|
3481 e1000e_set_interrupt_capability(adapter); |
|
3482 |
|
3483 if (e1000_alloc_queues(adapter)) |
|
3484 return -ENOMEM; |
|
3485 |
|
3486 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
3487 e1000_irq_disable(adapter); |
|
3488 |
|
3489 set_bit(__E1000_DOWN, &adapter->state); |
|
3490 return 0; |
|
3491 } |
|
3492 |
|
3493 /** |
|
3494 * e1000_intr_msi_test - Interrupt Handler |
|
3495 * @irq: interrupt number |
|
3496 * @data: pointer to a network interface device structure |
|
3497 **/ |
|
3498 static irqreturn_t e1000_intr_msi_test(int irq, void *data) |
|
3499 { |
|
3500 struct net_device *netdev = data; |
|
3501 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3502 struct e1000_hw *hw = &adapter->hw; |
|
3503 u32 icr = er32(ICR); |
|
3504 |
|
3505 e_dbg("icr is %08X\n", icr); |
|
3506 if (icr & E1000_ICR_RXSEQ) { |
|
3507 adapter->flags &= ~FLAG_MSI_TEST_FAILED; |
|
3508 wmb(); |
|
3509 } |
|
3510 |
|
3511 return IRQ_HANDLED; |
|
3512 } |
|
3513 |
|
3514 /** |
|
3515 * e1000_test_msi_interrupt - Returns 0 for successful test |
|
3516 * @adapter: board private struct |
|
3517 * |
|
3518 * code flow taken from tg3.c |
|
3519 **/ |
|
3520 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) |
|
3521 { |
|
3522 struct net_device *netdev = adapter->netdev; |
|
3523 struct e1000_hw *hw = &adapter->hw; |
|
3524 int err; |
|
3525 |
|
3526 /* poll_enable hasn't been called yet, so don't need disable */ |
|
3527 /* clear any pending events */ |
|
3528 er32(ICR); |
|
3529 |
|
3530 /* free the real vector and request a test handler */ |
|
3531 e1000_free_irq(adapter); |
|
3532 e1000e_reset_interrupt_capability(adapter); |
|
3533 |
|
3534 /* Assume that the test fails, if it succeeds then the test |
|
3535 * MSI irq handler will unset this flag */ |
|
3536 adapter->flags |= FLAG_MSI_TEST_FAILED; |
|
3537 |
|
3538 err = pci_enable_msi(adapter->pdev); |
|
3539 if (err) |
|
3540 goto msi_test_failed; |
|
3541 |
|
3542 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
|
3543 netdev->name, netdev); |
|
3544 if (err) { |
|
3545 pci_disable_msi(adapter->pdev); |
|
3546 goto msi_test_failed; |
|
3547 } |
|
3548 |
|
3549 wmb(); |
|
3550 |
|
3551 e1000_irq_enable(adapter); |
|
3552 |
|
3553 /* fire an unusual interrupt on the test handler */ |
|
3554 ew32(ICS, E1000_ICS_RXSEQ); |
|
3555 e1e_flush(); |
|
3556 msleep(50); |
|
3557 |
|
3558 e1000_irq_disable(adapter); |
|
3559 |
|
3560 rmb(); |
|
3561 |
|
3562 if (adapter->flags & FLAG_MSI_TEST_FAILED) { |
|
3563 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
3564 e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
|
3565 } else |
|
3566 e_dbg("MSI interrupt test succeeded!\n"); |
|
3567 |
|
3568 free_irq(adapter->pdev->irq, netdev); |
|
3569 pci_disable_msi(adapter->pdev); |
|
3570 |
|
3571 msi_test_failed: |
|
3572 e1000e_set_interrupt_capability(adapter); |
|
3573 return e1000_request_irq(adapter); |
|
3574 } |
|
3575 |
|
3576 /** |
|
3577 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored |
|
3578 * @adapter: board private struct |
|
3579 * |
|
3580 * code flow taken from tg3.c, called with e1000 interrupts disabled. |
|
3581 **/ |
|
3582 static int e1000_test_msi(struct e1000_adapter *adapter) |
|
3583 { |
|
3584 int err; |
|
3585 u16 pci_cmd; |
|
3586 |
|
3587 if (!(adapter->flags & FLAG_MSI_ENABLED)) |
|
3588 return 0; |
|
3589 |
|
3590 /* disable SERR in case the MSI write causes a master abort */ |
|
3591 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3592 if (pci_cmd & PCI_COMMAND_SERR) |
|
3593 pci_write_config_word(adapter->pdev, PCI_COMMAND, |
|
3594 pci_cmd & ~PCI_COMMAND_SERR); |
|
3595 |
|
3596 err = e1000_test_msi_interrupt(adapter); |
|
3597 |
|
3598 /* re-enable SERR */ |
|
3599 if (pci_cmd & PCI_COMMAND_SERR) { |
|
3600 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3601 pci_cmd |= PCI_COMMAND_SERR; |
|
3602 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); |
|
3603 } |
|
3604 |
|
3605 return err; |
|
3606 } |
|
3607 |
|
3608 /** |
|
3609 * e1000_open - Called when a network interface is made active |
|
3610 * @netdev: network interface device structure |
|
3611 * |
|
3612 * Returns 0 on success, negative value on failure |
|
3613 * |
|
3614 * The open entry point is called when a network interface is made |
|
3615 * active by the system (IFF_UP). At this point all resources needed |
|
3616 * for transmit and receive operations are allocated, the interrupt |
|
3617 * handler is registered with the OS, the watchdog timer is started, |
|
3618 * and the stack is notified that the interface is ready. |
|
3619 **/ |
|
3620 static int e1000_open(struct net_device *netdev) |
|
3621 { |
|
3622 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3623 struct e1000_hw *hw = &adapter->hw; |
|
3624 struct pci_dev *pdev = adapter->pdev; |
|
3625 int err; |
|
3626 |
|
3627 /* disallow open during test */ |
|
3628 if (test_bit(__E1000_TESTING, &adapter->state)) |
|
3629 return -EBUSY; |
|
3630 |
|
3631 pm_runtime_get_sync(&pdev->dev); |
|
3632 |
|
3633 if (adapter->ecdev) { |
|
3634 ecdev_set_link(adapter->ecdev, 0); |
|
3635 } else { |
|
3636 netif_carrier_off(netdev); |
|
3637 } |
|
3638 |
|
3639 /* allocate transmit descriptors */ |
|
3640 err = e1000e_setup_tx_resources(adapter); |
|
3641 if (err) |
|
3642 goto err_setup_tx; |
|
3643 |
|
3644 /* allocate receive descriptors */ |
|
3645 err = e1000e_setup_rx_resources(adapter); |
|
3646 if (err) |
|
3647 goto err_setup_rx; |
|
3648 |
|
3649 /* |
|
3650 * If AMT is enabled, let the firmware know that the network |
|
3651 * interface is now open and reset the part to a known state. |
|
3652 */ |
|
3653 if (adapter->flags & FLAG_HAS_AMT) { |
|
3654 e1000_get_hw_control(adapter); |
|
3655 e1000e_reset(adapter); |
|
3656 } |
|
3657 |
|
3658 e1000e_power_up_phy(adapter); |
|
3659 |
|
3660 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
3661 if ((adapter->hw.mng_cookie.status & |
|
3662 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
|
3663 e1000_update_mng_vlan(adapter); |
|
3664 |
|
3665 /* DMA latency requirement to workaround early-receive/jumbo issue */ |
|
3666 if ((adapter->flags & FLAG_HAS_ERT) || |
|
3667 (adapter->hw.mac.type == e1000_pch2lan)) |
|
3668 pm_qos_add_request(&adapter->netdev->pm_qos_req, |
|
3669 PM_QOS_CPU_DMA_LATENCY, |
|
3670 PM_QOS_DEFAULT_VALUE); |
|
3671 |
|
3672 /* |
|
3673 * before we allocate an interrupt, we must be ready to handle it. |
|
3674 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
3675 * as soon as we call pci_request_irq, so we have to setup our |
|
3676 * clean_rx handler before we do so. |
|
3677 */ |
|
3678 e1000_configure(adapter); |
|
3679 |
|
3680 err = e1000_request_irq(adapter); |
|
3681 if (err) |
|
3682 goto err_req_irq; |
|
3683 |
|
3684 /* |
|
3685 * Work around PCIe errata with MSI interrupts causing some chipsets to |
|
3686 * ignore e1000e MSI messages, which means we need to test our MSI |
|
3687 * interrupt now |
|
3688 */ |
|
3689 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
|
3690 err = e1000_test_msi(adapter); |
|
3691 if (err) { |
|
3692 e_err("Interrupt allocation failed\n"); |
|
3693 goto err_req_irq; |
|
3694 } |
|
3695 } |
|
3696 |
|
3697 /* From here on the code is the same as e1000e_up() */ |
|
3698 clear_bit(__E1000_DOWN, &adapter->state); |
|
3699 |
|
3700 if (!adapter->ecdev) { |
|
3701 napi_enable(&adapter->napi); |
|
3702 |
|
3703 e1000_irq_enable(adapter); |
|
3704 |
|
3705 netif_start_queue(netdev); |
|
3706 |
|
3707 adapter->idle_check = true; |
|
3708 pm_runtime_put(&pdev->dev); |
|
3709 |
|
3710 /* fire a link status change interrupt to start the watchdog */ |
|
3711 if (adapter->msix_entries) |
|
3712 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3713 else |
|
3714 ew32(ICS, E1000_ICS_LSC); |
|
3715 } |
|
3716 |
|
3717 return 0; |
|
3718 |
|
3719 err_req_irq: |
|
3720 e1000_release_hw_control(adapter); |
|
3721 e1000_power_down_phy(adapter); |
|
3722 e1000e_free_rx_resources(adapter); |
|
3723 err_setup_rx: |
|
3724 e1000e_free_tx_resources(adapter); |
|
3725 err_setup_tx: |
|
3726 e1000e_reset(adapter); |
|
3727 pm_runtime_put_sync(&pdev->dev); |
|
3728 |
|
3729 return err; |
|
3730 } |
|
3731 |
|
3732 /** |
|
3733 * e1000_close - Disables a network interface |
|
3734 * @netdev: network interface device structure |
|
3735 * |
|
3736 * Returns 0, this is not allowed to fail |
|
3737 * |
|
3738 * The close entry point is called when an interface is de-activated |
|
3739 * by the OS. The hardware is still under the drivers control, but |
|
3740 * needs to be disabled. A global MAC reset is issued to stop the |
|
3741 * hardware, and all transmit and receive resources are freed. |
|
3742 **/ |
|
3743 static int e1000_close(struct net_device *netdev) |
|
3744 { |
|
3745 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3746 struct pci_dev *pdev = adapter->pdev; |
|
3747 |
|
3748 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
3749 |
|
3750 pm_runtime_get_sync(&pdev->dev); |
|
3751 |
|
3752 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
3753 e1000e_down(adapter); |
|
3754 e1000_free_irq(adapter); |
|
3755 } |
|
3756 e1000_power_down_phy(adapter); |
|
3757 |
|
3758 e1000e_free_tx_resources(adapter); |
|
3759 e1000e_free_rx_resources(adapter); |
|
3760 |
|
3761 /* |
|
3762 * kill manageability vlan ID if supported, but not if a vlan with |
|
3763 * the same ID is registered on the host OS (let 8021q kill it) |
|
3764 */ |
|
3765 if ((adapter->hw.mng_cookie.status & |
|
3766 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
3767 !(adapter->vlgrp && |
|
3768 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) |
|
3769 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
3770 |
|
3771 /* |
|
3772 * If AMT is enabled, let the firmware know that the network |
|
3773 * interface is now closed |
|
3774 */ |
|
3775 if (adapter->flags & FLAG_HAS_AMT) |
|
3776 e1000_release_hw_control(adapter); |
|
3777 |
|
3778 if ((adapter->flags & FLAG_HAS_ERT) || |
|
3779 (adapter->hw.mac.type == e1000_pch2lan)) |
|
3780 pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
|
3781 |
|
3782 pm_runtime_put_sync(&pdev->dev); |
|
3783 |
|
3784 return 0; |
|
3785 } |
|
3786 /** |
|
3787 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
3788 * @netdev: network interface device structure |
|
3789 * @p: pointer to an address structure |
|
3790 * |
|
3791 * Returns 0 on success, negative on failure |
|
3792 **/ |
|
3793 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
3794 { |
|
3795 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3796 struct sockaddr *addr = p; |
|
3797 |
|
3798 if (!is_valid_ether_addr(addr->sa_data)) |
|
3799 return -EADDRNOTAVAIL; |
|
3800 |
|
3801 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
3802 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
|
3803 |
|
3804 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
|
3805 |
|
3806 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { |
|
3807 /* activate the work around */ |
|
3808 e1000e_set_laa_state_82571(&adapter->hw, 1); |
|
3809 |
|
3810 /* |
|
3811 * Hold a copy of the LAA in RAR[14] This is done so that |
|
3812 * between the time RAR[0] gets clobbered and the time it |
|
3813 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
3814 * of the RARs and no incoming packets directed to this port |
|
3815 * are dropped. Eventually the LAA will be in RAR[0] and |
|
3816 * RAR[14] |
|
3817 */ |
|
3818 e1000e_rar_set(&adapter->hw, |
|
3819 adapter->hw.mac.addr, |
|
3820 adapter->hw.mac.rar_entry_count - 1); |
|
3821 } |
|
3822 |
|
3823 return 0; |
|
3824 } |
|
3825 |
|
3826 /** |
|
3827 * e1000e_update_phy_task - work thread to update phy |
|
3828 * @work: pointer to our work struct |
|
3829 * |
|
3830 * this worker thread exists because we must acquire a |
|
3831 * semaphore to read the phy, which we could msleep while |
|
3832 * waiting for it, and we can't msleep in a timer. |
|
3833 **/ |
|
3834 static void e1000e_update_phy_task(struct work_struct *work) |
|
3835 { |
|
3836 struct e1000_adapter *adapter = container_of(work, |
|
3837 struct e1000_adapter, update_phy_task); |
|
3838 e1000_get_phy_info(&adapter->hw); |
|
3839 } |
|
3840 |
|
3841 /* |
|
3842 * Need to wait a few seconds after link up to get diagnostic information from |
|
3843 * the phy |
|
3844 */ |
|
3845 static void e1000_update_phy_info(unsigned long data) |
|
3846 { |
|
3847 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
3848 schedule_work(&adapter->update_phy_task); |
|
3849 } |
|
3850 |
|
3851 /** |
|
3852 * e1000e_update_phy_stats - Update the PHY statistics counters |
|
3853 * @adapter: board private structure |
|
3854 **/ |
|
3855 static void e1000e_update_phy_stats(struct e1000_adapter *adapter) |
|
3856 { |
|
3857 struct e1000_hw *hw = &adapter->hw; |
|
3858 s32 ret_val; |
|
3859 u16 phy_data; |
|
3860 |
|
3861 ret_val = hw->phy.ops.acquire(hw); |
|
3862 if (ret_val) |
|
3863 return; |
|
3864 |
|
3865 hw->phy.addr = 1; |
|
3866 |
|
3867 #define HV_PHY_STATS_PAGE 778 |
|
3868 /* |
|
3869 * A page set is expensive so check if already on desired page. |
|
3870 * If not, set to the page with the PHY status registers. |
|
3871 */ |
|
3872 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
3873 &phy_data); |
|
3874 if (ret_val) |
|
3875 goto release; |
|
3876 if (phy_data != (HV_PHY_STATS_PAGE << IGP_PAGE_SHIFT)) { |
|
3877 ret_val = e1000e_write_phy_reg_mdic(hw, |
|
3878 IGP01E1000_PHY_PAGE_SELECT, |
|
3879 (HV_PHY_STATS_PAGE << |
|
3880 IGP_PAGE_SHIFT)); |
|
3881 if (ret_val) |
|
3882 goto release; |
|
3883 } |
|
3884 |
|
3885 /* Read/clear the upper 16-bit registers and read/accumulate lower */ |
|
3886 |
|
3887 /* Single Collision Count */ |
|
3888 e1000e_read_phy_reg_mdic(hw, HV_SCC_UPPER & MAX_PHY_REG_ADDRESS, |
|
3889 &phy_data); |
|
3890 ret_val = e1000e_read_phy_reg_mdic(hw, |
|
3891 HV_SCC_LOWER & MAX_PHY_REG_ADDRESS, |
|
3892 &phy_data); |
|
3893 if (!ret_val) |
|
3894 adapter->stats.scc += phy_data; |
|
3895 |
|
3896 /* Excessive Collision Count */ |
|
3897 e1000e_read_phy_reg_mdic(hw, HV_ECOL_UPPER & MAX_PHY_REG_ADDRESS, |
|
3898 &phy_data); |
|
3899 ret_val = e1000e_read_phy_reg_mdic(hw, |
|
3900 HV_ECOL_LOWER & MAX_PHY_REG_ADDRESS, |
|
3901 &phy_data); |
|
3902 if (!ret_val) |
|
3903 adapter->stats.ecol += phy_data; |
|
3904 |
|
3905 /* Multiple Collision Count */ |
|
3906 e1000e_read_phy_reg_mdic(hw, HV_MCC_UPPER & MAX_PHY_REG_ADDRESS, |
|
3907 &phy_data); |
|
3908 ret_val = e1000e_read_phy_reg_mdic(hw, |
|
3909 HV_MCC_LOWER & MAX_PHY_REG_ADDRESS, |
|
3910 &phy_data); |
|
3911 if (!ret_val) |
|
3912 adapter->stats.mcc += phy_data; |
|
3913 |
|
3914 /* Late Collision Count */ |
|
3915 e1000e_read_phy_reg_mdic(hw, HV_LATECOL_UPPER & MAX_PHY_REG_ADDRESS, |
|
3916 &phy_data); |
|
3917 ret_val = e1000e_read_phy_reg_mdic(hw, |
|
3918 HV_LATECOL_LOWER & |
|
3919 MAX_PHY_REG_ADDRESS, |
|
3920 &phy_data); |
|
3921 if (!ret_val) |
|
3922 adapter->stats.latecol += phy_data; |
|
3923 |
|
3924 /* Collision Count - also used for adaptive IFS */ |
|
3925 e1000e_read_phy_reg_mdic(hw, HV_COLC_UPPER & MAX_PHY_REG_ADDRESS, |
|
3926 &phy_data); |
|
3927 ret_val = e1000e_read_phy_reg_mdic(hw, |
|
3928 HV_COLC_LOWER & MAX_PHY_REG_ADDRESS, |
|
3929 &phy_data); |
|
3930 if (!ret_val) |
|
3931 hw->mac.collision_delta = phy_data; |
|
3932 |
|
3933 /* Defer Count */ |
|
3934 e1000e_read_phy_reg_mdic(hw, HV_DC_UPPER & MAX_PHY_REG_ADDRESS, |
|
3935 &phy_data); |
|
3936 ret_val = e1000e_read_phy_reg_mdic(hw, |
|
3937 HV_DC_LOWER & MAX_PHY_REG_ADDRESS, |
|
3938 &phy_data); |
|
3939 if (!ret_val) |
|
3940 adapter->stats.dc += phy_data; |
|
3941 |
|
3942 /* Transmit with no CRS */ |
|
3943 e1000e_read_phy_reg_mdic(hw, HV_TNCRS_UPPER & MAX_PHY_REG_ADDRESS, |
|
3944 &phy_data); |
|
3945 ret_val = e1000e_read_phy_reg_mdic(hw, |
|
3946 HV_TNCRS_LOWER & MAX_PHY_REG_ADDRESS, |
|
3947 &phy_data); |
|
3948 if (!ret_val) |
|
3949 adapter->stats.tncrs += phy_data; |
|
3950 |
|
3951 release: |
|
3952 hw->phy.ops.release(hw); |
|
3953 } |
|
3954 |
|
3955 /** |
|
3956 * e1000e_update_stats - Update the board statistics counters |
|
3957 * @adapter: board private structure |
|
3958 **/ |
|
3959 void e1000e_update_stats(struct e1000_adapter *adapter) |
|
3960 { |
|
3961 struct net_device *netdev = adapter->netdev; |
|
3962 struct e1000_hw *hw = &adapter->hw; |
|
3963 struct pci_dev *pdev = adapter->pdev; |
|
3964 |
|
3965 /* |
|
3966 * Prevent stats update while adapter is being reset, or if the pci |
|
3967 * connection is down. |
|
3968 */ |
|
3969 if (adapter->link_speed == 0) |
|
3970 return; |
|
3971 if (pci_channel_offline(pdev)) |
|
3972 return; |
|
3973 |
|
3974 adapter->stats.crcerrs += er32(CRCERRS); |
|
3975 adapter->stats.gprc += er32(GPRC); |
|
3976 adapter->stats.gorc += er32(GORCL); |
|
3977 er32(GORCH); /* Clear gorc */ |
|
3978 adapter->stats.bprc += er32(BPRC); |
|
3979 adapter->stats.mprc += er32(MPRC); |
|
3980 adapter->stats.roc += er32(ROC); |
|
3981 |
|
3982 adapter->stats.mpc += er32(MPC); |
|
3983 |
|
3984 /* Half-duplex statistics */ |
|
3985 if (adapter->link_duplex == HALF_DUPLEX) { |
|
3986 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { |
|
3987 e1000e_update_phy_stats(adapter); |
|
3988 } else { |
|
3989 adapter->stats.scc += er32(SCC); |
|
3990 adapter->stats.ecol += er32(ECOL); |
|
3991 adapter->stats.mcc += er32(MCC); |
|
3992 adapter->stats.latecol += er32(LATECOL); |
|
3993 adapter->stats.dc += er32(DC); |
|
3994 |
|
3995 hw->mac.collision_delta = er32(COLC); |
|
3996 |
|
3997 if ((hw->mac.type != e1000_82574) && |
|
3998 (hw->mac.type != e1000_82583)) |
|
3999 adapter->stats.tncrs += er32(TNCRS); |
|
4000 } |
|
4001 adapter->stats.colc += hw->mac.collision_delta; |
|
4002 } |
|
4003 |
|
4004 adapter->stats.xonrxc += er32(XONRXC); |
|
4005 adapter->stats.xontxc += er32(XONTXC); |
|
4006 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
4007 adapter->stats.xofftxc += er32(XOFFTXC); |
|
4008 adapter->stats.gptc += er32(GPTC); |
|
4009 adapter->stats.gotc += er32(GOTCL); |
|
4010 er32(GOTCH); /* Clear gotc */ |
|
4011 adapter->stats.rnbc += er32(RNBC); |
|
4012 adapter->stats.ruc += er32(RUC); |
|
4013 |
|
4014 adapter->stats.mptc += er32(MPTC); |
|
4015 adapter->stats.bptc += er32(BPTC); |
|
4016 |
|
4017 /* used for adaptive IFS */ |
|
4018 |
|
4019 hw->mac.tx_packet_delta = er32(TPT); |
|
4020 adapter->stats.tpt += hw->mac.tx_packet_delta; |
|
4021 |
|
4022 adapter->stats.algnerrc += er32(ALGNERRC); |
|
4023 adapter->stats.rxerrc += er32(RXERRC); |
|
4024 adapter->stats.cexterr += er32(CEXTERR); |
|
4025 adapter->stats.tsctc += er32(TSCTC); |
|
4026 adapter->stats.tsctfc += er32(TSCTFC); |
|
4027 |
|
4028 /* Fill out the OS statistics structure */ |
|
4029 netdev->stats.multicast = adapter->stats.mprc; |
|
4030 netdev->stats.collisions = adapter->stats.colc; |
|
4031 |
|
4032 /* Rx Errors */ |
|
4033 |
|
4034 /* |
|
4035 * RLEC on some newer hardware can be incorrect so build |
|
4036 * our own version based on RUC and ROC |
|
4037 */ |
|
4038 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
4039 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
4040 adapter->stats.ruc + adapter->stats.roc + |
|
4041 adapter->stats.cexterr; |
|
4042 netdev->stats.rx_length_errors = adapter->stats.ruc + |
|
4043 adapter->stats.roc; |
|
4044 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
4045 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
4046 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
4047 |
|
4048 /* Tx Errors */ |
|
4049 netdev->stats.tx_errors = adapter->stats.ecol + |
|
4050 adapter->stats.latecol; |
|
4051 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
4052 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
4053 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
4054 |
|
4055 /* Tx Dropped needs to be maintained elsewhere */ |
|
4056 |
|
4057 /* Management Stats */ |
|
4058 adapter->stats.mgptc += er32(MGTPTC); |
|
4059 adapter->stats.mgprc += er32(MGTPRC); |
|
4060 adapter->stats.mgpdc += er32(MGTPDC); |
|
4061 } |
|
4062 |
|
4063 /** |
|
4064 * e1000_phy_read_status - Update the PHY register status snapshot |
|
4065 * @adapter: board private structure |
|
4066 **/ |
|
4067 static void e1000_phy_read_status(struct e1000_adapter *adapter) |
|
4068 { |
|
4069 struct e1000_hw *hw = &adapter->hw; |
|
4070 struct e1000_phy_regs *phy = &adapter->phy_regs; |
|
4071 int ret_val; |
|
4072 |
|
4073 if ((er32(STATUS) & E1000_STATUS_LU) && |
|
4074 (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
|
4075 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); |
|
4076 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); |
|
4077 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); |
|
4078 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); |
|
4079 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); |
|
4080 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); |
|
4081 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); |
|
4082 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); |
|
4083 if (ret_val) |
|
4084 e_warn("Error reading PHY register\n"); |
|
4085 } else { |
|
4086 /* |
|
4087 * Do not read PHY registers if link is not up |
|
4088 * Set values to typical power-on defaults |
|
4089 */ |
|
4090 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); |
|
4091 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | |
|
4092 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | |
|
4093 BMSR_ERCAP); |
|
4094 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | |
|
4095 ADVERTISE_ALL | ADVERTISE_CSMA); |
|
4096 phy->lpa = 0; |
|
4097 phy->expansion = EXPANSION_ENABLENPAGE; |
|
4098 phy->ctrl1000 = ADVERTISE_1000FULL; |
|
4099 phy->stat1000 = 0; |
|
4100 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); |
|
4101 } |
|
4102 } |
|
4103 |
|
4104 static void e1000_print_link_info(struct e1000_adapter *adapter) |
|
4105 { |
|
4106 struct e1000_hw *hw = &adapter->hw; |
|
4107 u32 ctrl = er32(CTRL); |
|
4108 |
|
4109 /* Link status message must follow this format for user tools */ |
|
4110 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, " |
|
4111 "Flow Control: %s\n", |
|
4112 adapter->netdev->name, |
|
4113 adapter->link_speed, |
|
4114 (adapter->link_duplex == FULL_DUPLEX) ? |
|
4115 "Full Duplex" : "Half Duplex", |
|
4116 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? |
|
4117 "RX/TX" : |
|
4118 ((ctrl & E1000_CTRL_RFCE) ? "RX" : |
|
4119 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" ))); |
|
4120 } |
|
4121 |
|
4122 static bool e1000e_has_link(struct e1000_adapter *adapter) |
|
4123 { |
|
4124 struct e1000_hw *hw = &adapter->hw; |
|
4125 bool link_active = 0; |
|
4126 s32 ret_val = 0; |
|
4127 |
|
4128 /* |
|
4129 * get_link_status is set on LSC (link status) interrupt or |
|
4130 * Rx sequence error interrupt. get_link_status will stay |
|
4131 * false until the check_for_link establishes link |
|
4132 * for copper adapters ONLY |
|
4133 */ |
|
4134 switch (hw->phy.media_type) { |
|
4135 case e1000_media_type_copper: |
|
4136 if (hw->mac.get_link_status) { |
|
4137 ret_val = hw->mac.ops.check_for_link(hw); |
|
4138 link_active = !hw->mac.get_link_status; |
|
4139 } else { |
|
4140 link_active = 1; |
|
4141 } |
|
4142 break; |
|
4143 case e1000_media_type_fiber: |
|
4144 ret_val = hw->mac.ops.check_for_link(hw); |
|
4145 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
4146 break; |
|
4147 case e1000_media_type_internal_serdes: |
|
4148 ret_val = hw->mac.ops.check_for_link(hw); |
|
4149 link_active = adapter->hw.mac.serdes_has_link; |
|
4150 break; |
|
4151 default: |
|
4152 case e1000_media_type_unknown: |
|
4153 break; |
|
4154 } |
|
4155 |
|
4156 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && |
|
4157 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
4158 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ |
|
4159 e_info("Gigabit has been disabled, downgrading speed\n"); |
|
4160 } |
|
4161 |
|
4162 return link_active; |
|
4163 } |
|
4164 |
|
4165 static void e1000e_enable_receives(struct e1000_adapter *adapter) |
|
4166 { |
|
4167 /* make sure the receive unit is started */ |
|
4168 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4169 (adapter->flags & FLAG_RX_RESTART_NOW)) { |
|
4170 struct e1000_hw *hw = &adapter->hw; |
|
4171 u32 rctl = er32(RCTL); |
|
4172 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
4173 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
4174 } |
|
4175 } |
|
4176 |
|
4177 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
|
4178 { |
|
4179 struct e1000_hw *hw = &adapter->hw; |
|
4180 |
|
4181 /* |
|
4182 * With 82574 controllers, PHY needs to be checked periodically |
|
4183 * for hung state and reset, if two calls return true |
|
4184 */ |
|
4185 if (e1000_check_phy_82574(hw)) |
|
4186 adapter->phy_hang_count++; |
|
4187 else |
|
4188 adapter->phy_hang_count = 0; |
|
4189 |
|
4190 if (adapter->phy_hang_count > 1) { |
|
4191 adapter->phy_hang_count = 0; |
|
4192 schedule_work(&adapter->reset_task); |
|
4193 } |
|
4194 } |
|
4195 |
|
4196 /** |
|
4197 * e1000_watchdog - Timer Call-back |
|
4198 * @data: pointer to adapter cast into an unsigned long |
|
4199 **/ |
|
4200 static void e1000_watchdog(unsigned long data) |
|
4201 { |
|
4202 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4203 |
|
4204 /* Do the rest outside of interrupt context */ |
|
4205 schedule_work(&adapter->watchdog_task); |
|
4206 |
|
4207 /* TODO: make this use queue_delayed_work() */ |
|
4208 } |
|
4209 |
|
4210 static void e1000_watchdog_task(struct work_struct *work) |
|
4211 { |
|
4212 struct e1000_adapter *adapter = container_of(work, |
|
4213 struct e1000_adapter, watchdog_task); |
|
4214 struct net_device *netdev = adapter->netdev; |
|
4215 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
4216 struct e1000_phy_info *phy = &adapter->hw.phy; |
|
4217 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4218 struct e1000_hw *hw = &adapter->hw; |
|
4219 u32 link, tctl; |
|
4220 int tx_pending = 0; |
|
4221 |
|
4222 link = e1000e_has_link(adapter); |
|
4223 if ((adapter->ecdev && (ecdev_get_link(adapter->ecdev)) && link) |
|
4224 || (!adapter->ecdev && (netif_carrier_ok(netdev)) && link)) { |
|
4225 if (!adapter->ecdev) { |
|
4226 /* Cancel scheduled suspend requests. */ |
|
4227 pm_runtime_resume(netdev->dev.parent); |
|
4228 } |
|
4229 |
|
4230 e1000e_enable_receives(adapter); |
|
4231 goto link_up; |
|
4232 } |
|
4233 |
|
4234 if ((e1000e_enable_tx_pkt_filtering(hw)) && |
|
4235 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) |
|
4236 e1000_update_mng_vlan(adapter); |
|
4237 |
|
4238 if (link) { |
|
4239 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
4240 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
4241 bool txb2b = 1; |
|
4242 |
|
4243 /* Cancel scheduled suspend requests. */ |
|
4244 pm_runtime_resume(netdev->dev.parent); |
|
4245 |
|
4246 /* update snapshot of PHY registers on LSC */ |
|
4247 e1000_phy_read_status(adapter); |
|
4248 mac->ops.get_link_up_info(&adapter->hw, |
|
4249 &adapter->link_speed, |
|
4250 &adapter->link_duplex); |
|
4251 e1000_print_link_info(adapter); |
|
4252 /* |
|
4253 * On supported PHYs, check for duplex mismatch only |
|
4254 * if link has autonegotiated at 10/100 half |
|
4255 */ |
|
4256 if ((hw->phy.type == e1000_phy_igp_3 || |
|
4257 hw->phy.type == e1000_phy_bm) && |
|
4258 (hw->mac.autoneg == true) && |
|
4259 (adapter->link_speed == SPEED_10 || |
|
4260 adapter->link_speed == SPEED_100) && |
|
4261 (adapter->link_duplex == HALF_DUPLEX)) { |
|
4262 u16 autoneg_exp; |
|
4263 |
|
4264 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); |
|
4265 |
|
4266 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) |
|
4267 e_info("Autonegotiated half duplex but" |
|
4268 " link partner cannot autoneg. " |
|
4269 " Try forcing full duplex if " |
|
4270 "link gets many collisions.\n"); |
|
4271 } |
|
4272 |
|
4273 /* adjust timeout factor according to speed/duplex */ |
|
4274 adapter->tx_timeout_factor = 1; |
|
4275 switch (adapter->link_speed) { |
|
4276 case SPEED_10: |
|
4277 txb2b = 0; |
|
4278 adapter->tx_timeout_factor = 16; |
|
4279 break; |
|
4280 case SPEED_100: |
|
4281 txb2b = 0; |
|
4282 adapter->tx_timeout_factor = 10; |
|
4283 break; |
|
4284 } |
|
4285 |
|
4286 /* |
|
4287 * workaround: re-program speed mode bit after |
|
4288 * link-up event |
|
4289 */ |
|
4290 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
|
4291 !txb2b) { |
|
4292 u32 tarc0; |
|
4293 tarc0 = er32(TARC(0)); |
|
4294 tarc0 &= ~SPEED_MODE_BIT; |
|
4295 ew32(TARC(0), tarc0); |
|
4296 } |
|
4297 |
|
4298 /* |
|
4299 * disable TSO for pcie and 10/100 speeds, to avoid |
|
4300 * some hardware issues |
|
4301 */ |
|
4302 if (!(adapter->flags & FLAG_TSO_FORCE)) { |
|
4303 switch (adapter->link_speed) { |
|
4304 case SPEED_10: |
|
4305 case SPEED_100: |
|
4306 e_info("10/100 speed: disabling TSO\n"); |
|
4307 netdev->features &= ~NETIF_F_TSO; |
|
4308 netdev->features &= ~NETIF_F_TSO6; |
|
4309 break; |
|
4310 case SPEED_1000: |
|
4311 netdev->features |= NETIF_F_TSO; |
|
4312 netdev->features |= NETIF_F_TSO6; |
|
4313 break; |
|
4314 default: |
|
4315 /* oops */ |
|
4316 break; |
|
4317 } |
|
4318 } |
|
4319 |
|
4320 /* |
|
4321 * enable transmits in the hardware, need to do this |
|
4322 * after setting TARC(0) |
|
4323 */ |
|
4324 tctl = er32(TCTL); |
|
4325 tctl |= E1000_TCTL_EN; |
|
4326 ew32(TCTL, tctl); |
|
4327 |
|
4328 /* |
|
4329 * Perform any post-link-up configuration before |
|
4330 * reporting link up. |
|
4331 */ |
|
4332 if (phy->ops.cfg_on_link_up) |
|
4333 phy->ops.cfg_on_link_up(hw); |
|
4334 |
|
4335 if (adapter->ecdev) |
|
4336 ecdev_set_link(adapter->ecdev, 1); |
|
4337 else |
|
4338 netif_carrier_on(netdev); |
|
4339 |
|
4340 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4341 mod_timer(&adapter->phy_info_timer, |
|
4342 round_jiffies(jiffies + 2 * HZ)); |
|
4343 } |
|
4344 } else { |
|
4345 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
4346 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
4347 adapter->link_speed = 0; |
|
4348 adapter->link_duplex = 0; |
|
4349 /* Link status message must follow this format */ |
|
4350 printk(KERN_INFO "e1000e: %s NIC Link is Down\n", |
|
4351 adapter->netdev->name); |
|
4352 if (adapter->ecdev) |
|
4353 ecdev_set_link(adapter->ecdev, 0); |
|
4354 else |
|
4355 netif_carrier_off(netdev); |
|
4356 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4357 mod_timer(&adapter->phy_info_timer, |
|
4358 round_jiffies(jiffies + 2 * HZ)); |
|
4359 |
|
4360 if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
|
4361 schedule_work(&adapter->reset_task); |
|
4362 else |
|
4363 pm_schedule_suspend(netdev->dev.parent, |
|
4364 LINK_TIMEOUT); |
|
4365 } |
|
4366 } |
|
4367 |
|
4368 link_up: |
|
4369 e1000e_update_stats(adapter); |
|
4370 |
|
4371 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
4372 adapter->tpt_old = adapter->stats.tpt; |
|
4373 mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
4374 adapter->colc_old = adapter->stats.colc; |
|
4375 |
|
4376 adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
|
4377 adapter->gorc_old = adapter->stats.gorc; |
|
4378 adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
|
4379 adapter->gotc_old = adapter->stats.gotc; |
|
4380 |
|
4381 e1000e_update_adaptive(&adapter->hw); |
|
4382 |
|
4383 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
4384 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
4385 tx_pending = (e1000_desc_unused(tx_ring) + 1 < |
|
4386 tx_ring->count); |
|
4387 if (tx_pending) { |
|
4388 /* |
|
4389 * We've lost link, so the controller stops DMA, |
|
4390 * but we've got queued Tx work that's never going |
|
4391 * to get done, so reset controller to flush Tx. |
|
4392 * (Do the reset outside of interrupt context). |
|
4393 */ |
|
4394 adapter->tx_timeout_count++; |
|
4395 schedule_work(&adapter->reset_task); |
|
4396 /* return immediately since reset is imminent */ |
|
4397 return; |
|
4398 } |
|
4399 } |
|
4400 |
|
4401 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
4402 if (adapter->itr_setting == 4) { |
|
4403 /* |
|
4404 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
4405 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
4406 * everyone else is between 2000-8000. |
|
4407 */ |
|
4408 u32 goc = (adapter->gotc + adapter->gorc) / 10000; |
|
4409 u32 dif = (adapter->gotc > adapter->gorc ? |
|
4410 adapter->gotc - adapter->gorc : |
|
4411 adapter->gorc - adapter->gotc) / 10000; |
|
4412 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
4413 |
|
4414 ew32(ITR, 1000000000 / (itr * 256)); |
|
4415 } |
|
4416 |
|
4417 /* Cause software interrupt to ensure Rx ring is cleaned */ |
|
4418 if (adapter->msix_entries) |
|
4419 ew32(ICS, adapter->rx_ring->ims_val); |
|
4420 else |
|
4421 ew32(ICS, E1000_ICS_RXDMT0); |
|
4422 |
|
4423 /* Force detection of hung controller every watchdog period */ |
|
4424 adapter->detect_tx_hung = 1; |
|
4425 |
|
4426 /* flush partial descriptors to memory before detecting tx hang */ |
|
4427 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
4428 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
4429 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
4430 /* |
|
4431 * no need to flush the writes because the timeout code does |
|
4432 * an er32 first thing |
|
4433 */ |
|
4434 } |
|
4435 |
|
4436 /* |
|
4437 * With 82571 controllers, LAA may be overwritten due to controller |
|
4438 * reset from the other port. Set the appropriate LAA in RAR[0] |
|
4439 */ |
|
4440 if (e1000e_get_laa_state_82571(hw)) |
|
4441 e1000e_rar_set(hw, adapter->hw.mac.addr, 0); |
|
4442 |
|
4443 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
|
4444 e1000e_check_82574_phy_workaround(adapter); |
|
4445 |
|
4446 /* Reset the timer */ |
|
4447 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4448 mod_timer(&adapter->watchdog_timer, |
|
4449 round_jiffies(jiffies + 2 * HZ)); |
|
4450 } |
|
4451 |
|
4452 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
4453 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
4454 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
4455 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
4456 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
4457 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
4458 |
|
4459 static int e1000_tso(struct e1000_adapter *adapter, |
|
4460 struct sk_buff *skb) |
|
4461 { |
|
4462 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4463 struct e1000_context_desc *context_desc; |
|
4464 struct e1000_buffer *buffer_info; |
|
4465 unsigned int i; |
|
4466 u32 cmd_length = 0; |
|
4467 u16 ipcse = 0, tucse, mss; |
|
4468 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
4469 int err; |
|
4470 |
|
4471 if (!skb_is_gso(skb)) |
|
4472 return 0; |
|
4473 |
|
4474 if (skb_header_cloned(skb)) { |
|
4475 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
4476 if (err) |
|
4477 return err; |
|
4478 } |
|
4479 |
|
4480 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
4481 mss = skb_shinfo(skb)->gso_size; |
|
4482 if (skb->protocol == htons(ETH_P_IP)) { |
|
4483 struct iphdr *iph = ip_hdr(skb); |
|
4484 iph->tot_len = 0; |
|
4485 iph->check = 0; |
|
4486 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, |
|
4487 0, IPPROTO_TCP, 0); |
|
4488 cmd_length = E1000_TXD_CMD_IP; |
|
4489 ipcse = skb_transport_offset(skb) - 1; |
|
4490 } else if (skb_is_gso_v6(skb)) { |
|
4491 ipv6_hdr(skb)->payload_len = 0; |
|
4492 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
4493 &ipv6_hdr(skb)->daddr, |
|
4494 0, IPPROTO_TCP, 0); |
|
4495 ipcse = 0; |
|
4496 } |
|
4497 ipcss = skb_network_offset(skb); |
|
4498 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
4499 tucss = skb_transport_offset(skb); |
|
4500 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
4501 tucse = 0; |
|
4502 |
|
4503 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
4504 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
4505 |
|
4506 i = tx_ring->next_to_use; |
|
4507 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4508 buffer_info = &tx_ring->buffer_info[i]; |
|
4509 |
|
4510 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
4511 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
4512 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
4513 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
4514 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
4515 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
4516 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
4517 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
4518 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
4519 |
|
4520 buffer_info->time_stamp = jiffies; |
|
4521 buffer_info->next_to_watch = i; |
|
4522 |
|
4523 i++; |
|
4524 if (i == tx_ring->count) |
|
4525 i = 0; |
|
4526 tx_ring->next_to_use = i; |
|
4527 |
|
4528 return 1; |
|
4529 } |
|
4530 |
|
4531 static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) |
|
4532 { |
|
4533 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4534 struct e1000_context_desc *context_desc; |
|
4535 struct e1000_buffer *buffer_info; |
|
4536 unsigned int i; |
|
4537 u8 css; |
|
4538 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
4539 __be16 protocol; |
|
4540 |
|
4541 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
4542 return 0; |
|
4543 |
|
4544 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
|
4545 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; |
|
4546 else |
|
4547 protocol = skb->protocol; |
|
4548 |
|
4549 switch (protocol) { |
|
4550 case cpu_to_be16(ETH_P_IP): |
|
4551 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
4552 cmd_len |= E1000_TXD_CMD_TCP; |
|
4553 break; |
|
4554 case cpu_to_be16(ETH_P_IPV6): |
|
4555 /* XXX not handling all IPV6 headers */ |
|
4556 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
4557 cmd_len |= E1000_TXD_CMD_TCP; |
|
4558 break; |
|
4559 default: |
|
4560 if (unlikely(net_ratelimit())) |
|
4561 e_warn("checksum_partial proto=%x!\n", |
|
4562 be16_to_cpu(protocol)); |
|
4563 break; |
|
4564 } |
|
4565 |
|
4566 css = skb_transport_offset(skb); |
|
4567 |
|
4568 i = tx_ring->next_to_use; |
|
4569 buffer_info = &tx_ring->buffer_info[i]; |
|
4570 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4571 |
|
4572 context_desc->lower_setup.ip_config = 0; |
|
4573 context_desc->upper_setup.tcp_fields.tucss = css; |
|
4574 context_desc->upper_setup.tcp_fields.tucso = |
|
4575 css + skb->csum_offset; |
|
4576 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
4577 context_desc->tcp_seg_setup.data = 0; |
|
4578 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
4579 |
|
4580 buffer_info->time_stamp = jiffies; |
|
4581 buffer_info->next_to_watch = i; |
|
4582 |
|
4583 i++; |
|
4584 if (i == tx_ring->count) |
|
4585 i = 0; |
|
4586 tx_ring->next_to_use = i; |
|
4587 |
|
4588 return 1; |
|
4589 } |
|
4590 |
|
4591 #define E1000_MAX_PER_TXD 8192 |
|
4592 #define E1000_MAX_TXD_PWR 12 |
|
4593 |
|
4594 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
4595 struct sk_buff *skb, unsigned int first, |
|
4596 unsigned int max_per_txd, unsigned int nr_frags, |
|
4597 unsigned int mss) |
|
4598 { |
|
4599 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4600 struct pci_dev *pdev = adapter->pdev; |
|
4601 struct e1000_buffer *buffer_info; |
|
4602 unsigned int len = skb_headlen(skb); |
|
4603 unsigned int offset = 0, size, count = 0, i; |
|
4604 unsigned int f, bytecount, segs; |
|
4605 |
|
4606 i = tx_ring->next_to_use; |
|
4607 |
|
4608 while (len) { |
|
4609 buffer_info = &tx_ring->buffer_info[i]; |
|
4610 size = min(len, max_per_txd); |
|
4611 |
|
4612 buffer_info->length = size; |
|
4613 buffer_info->time_stamp = jiffies; |
|
4614 buffer_info->next_to_watch = i; |
|
4615 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4616 skb->data + offset, |
|
4617 size, DMA_TO_DEVICE); |
|
4618 buffer_info->mapped_as_page = false; |
|
4619 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4620 goto dma_error; |
|
4621 |
|
4622 len -= size; |
|
4623 offset += size; |
|
4624 count++; |
|
4625 |
|
4626 if (len) { |
|
4627 i++; |
|
4628 if (i == tx_ring->count) |
|
4629 i = 0; |
|
4630 } |
|
4631 } |
|
4632 |
|
4633 for (f = 0; f < nr_frags; f++) { |
|
4634 struct skb_frag_struct *frag; |
|
4635 |
|
4636 frag = &skb_shinfo(skb)->frags[f]; |
|
4637 len = frag->size; |
|
4638 offset = frag->page_offset; |
|
4639 |
|
4640 while (len) { |
|
4641 i++; |
|
4642 if (i == tx_ring->count) |
|
4643 i = 0; |
|
4644 |
|
4645 buffer_info = &tx_ring->buffer_info[i]; |
|
4646 size = min(len, max_per_txd); |
|
4647 |
|
4648 buffer_info->length = size; |
|
4649 buffer_info->time_stamp = jiffies; |
|
4650 buffer_info->next_to_watch = i; |
|
4651 buffer_info->dma = dma_map_page(&pdev->dev, frag->page, |
|
4652 offset, size, |
|
4653 DMA_TO_DEVICE); |
|
4654 buffer_info->mapped_as_page = true; |
|
4655 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4656 goto dma_error; |
|
4657 |
|
4658 len -= size; |
|
4659 offset += size; |
|
4660 count++; |
|
4661 } |
|
4662 } |
|
4663 |
|
4664 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
4665 /* multiply data chunks by size of headers */ |
|
4666 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; |
|
4667 |
|
4668 tx_ring->buffer_info[i].skb = skb; |
|
4669 tx_ring->buffer_info[i].segs = segs; |
|
4670 tx_ring->buffer_info[i].bytecount = bytecount; |
|
4671 tx_ring->buffer_info[first].next_to_watch = i; |
|
4672 |
|
4673 return count; |
|
4674 |
|
4675 dma_error: |
|
4676 dev_err(&pdev->dev, "TX DMA map failed\n"); |
|
4677 buffer_info->dma = 0; |
|
4678 if (count) |
|
4679 count--; |
|
4680 |
|
4681 while (count--) { |
|
4682 if (i==0) |
|
4683 i += tx_ring->count; |
|
4684 i--; |
|
4685 buffer_info = &tx_ring->buffer_info[i]; |
|
4686 e1000_put_txbuf(adapter, buffer_info);; |
|
4687 } |
|
4688 |
|
4689 return 0; |
|
4690 } |
|
4691 |
|
4692 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
4693 int tx_flags, int count) |
|
4694 { |
|
4695 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4696 struct e1000_tx_desc *tx_desc = NULL; |
|
4697 struct e1000_buffer *buffer_info; |
|
4698 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
4699 unsigned int i; |
|
4700 |
|
4701 if (tx_flags & E1000_TX_FLAGS_TSO) { |
|
4702 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
4703 E1000_TXD_CMD_TSE; |
|
4704 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4705 |
|
4706 if (tx_flags & E1000_TX_FLAGS_IPV4) |
|
4707 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
4708 } |
|
4709 |
|
4710 if (tx_flags & E1000_TX_FLAGS_CSUM) { |
|
4711 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
4712 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4713 } |
|
4714 |
|
4715 if (tx_flags & E1000_TX_FLAGS_VLAN) { |
|
4716 txd_lower |= E1000_TXD_CMD_VLE; |
|
4717 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
4718 } |
|
4719 |
|
4720 i = tx_ring->next_to_use; |
|
4721 |
|
4722 while (count--) { |
|
4723 buffer_info = &tx_ring->buffer_info[i]; |
|
4724 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
4725 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4726 tx_desc->lower.data = |
|
4727 cpu_to_le32(txd_lower | buffer_info->length); |
|
4728 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
4729 |
|
4730 i++; |
|
4731 if (i == tx_ring->count) |
|
4732 i = 0; |
|
4733 } |
|
4734 |
|
4735 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
4736 |
|
4737 /* |
|
4738 * Force memory writes to complete before letting h/w |
|
4739 * know there are new descriptors to fetch. (Only |
|
4740 * applicable for weak-ordered memory model archs, |
|
4741 * such as IA-64). |
|
4742 */ |
|
4743 wmb(); |
|
4744 |
|
4745 tx_ring->next_to_use = i; |
|
4746 writel(i, adapter->hw.hw_addr + tx_ring->tail); |
|
4747 /* |
|
4748 * we need this if more than one processor can write to our tail |
|
4749 * at a time, it synchronizes IO on IA64/Altix systems |
|
4750 */ |
|
4751 mmiowb(); |
|
4752 } |
|
4753 |
|
4754 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
4755 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
4756 struct sk_buff *skb) |
|
4757 { |
|
4758 struct e1000_hw *hw = &adapter->hw; |
|
4759 u16 length, offset; |
|
4760 |
|
4761 if (vlan_tx_tag_present(skb)) { |
|
4762 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
4763 (adapter->hw.mng_cookie.status & |
|
4764 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
|
4765 return 0; |
|
4766 } |
|
4767 |
|
4768 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) |
|
4769 return 0; |
|
4770 |
|
4771 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) |
|
4772 return 0; |
|
4773 |
|
4774 { |
|
4775 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); |
|
4776 struct udphdr *udp; |
|
4777 |
|
4778 if (ip->protocol != IPPROTO_UDP) |
|
4779 return 0; |
|
4780 |
|
4781 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
|
4782 if (ntohs(udp->dest) != 67) |
|
4783 return 0; |
|
4784 |
|
4785 offset = (u8 *)udp + 8 - skb->data; |
|
4786 length = skb->len - offset; |
|
4787 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); |
|
4788 } |
|
4789 |
|
4790 return 0; |
|
4791 } |
|
4792 |
|
4793 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
4794 { |
|
4795 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4796 |
|
4797 netif_stop_queue(netdev); |
|
4798 /* |
|
4799 * Herbert's original patch had: |
|
4800 * smp_mb__after_netif_stop_queue(); |
|
4801 * but since that doesn't exist yet, just open code it. |
|
4802 */ |
|
4803 smp_mb(); |
|
4804 |
|
4805 /* |
|
4806 * We need to check again in a case another CPU has just |
|
4807 * made room available. |
|
4808 */ |
|
4809 if (e1000_desc_unused(adapter->tx_ring) < size) |
|
4810 return -EBUSY; |
|
4811 |
|
4812 /* A reprieve! */ |
|
4813 netif_start_queue(netdev); |
|
4814 ++adapter->restart_queue; |
|
4815 return 0; |
|
4816 } |
|
4817 |
|
4818 static int e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
4819 { |
|
4820 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4821 |
|
4822 if (e1000_desc_unused(adapter->tx_ring) >= size) |
|
4823 return 0; |
|
4824 return __e1000_maybe_stop_tx(netdev, size); |
|
4825 } |
|
4826 |
|
4827 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
4828 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
4829 struct net_device *netdev) |
|
4830 { |
|
4831 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4832 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4833 unsigned int first; |
|
4834 unsigned int max_per_txd = E1000_MAX_PER_TXD; |
|
4835 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
4836 unsigned int tx_flags = 0; |
|
4837 unsigned int len = skb_headlen(skb); |
|
4838 unsigned int nr_frags; |
|
4839 unsigned int mss; |
|
4840 int count = 0; |
|
4841 int tso; |
|
4842 unsigned int f; |
|
4843 |
|
4844 if (test_bit(__E1000_DOWN, &adapter->state)) { |
|
4845 if (!adapter->ecdev) |
|
4846 dev_kfree_skb_any(skb); |
|
4847 return NETDEV_TX_OK; |
|
4848 } |
|
4849 |
|
4850 if (skb->len <= 0) { |
|
4851 if (!adapter->ecdev) |
|
4852 dev_kfree_skb_any(skb); |
|
4853 return NETDEV_TX_OK; |
|
4854 } |
|
4855 |
|
4856 mss = skb_shinfo(skb)->gso_size; |
|
4857 /* |
|
4858 * The controller does a simple calculation to |
|
4859 * make sure there is enough room in the FIFO before |
|
4860 * initiating the DMA for each buffer. The calc is: |
|
4861 * 4 = ceil(buffer len/mss). To make sure we don't |
|
4862 * overrun the FIFO, adjust the max buffer len if mss |
|
4863 * drops. |
|
4864 */ |
|
4865 if (mss) { |
|
4866 u8 hdr_len; |
|
4867 max_per_txd = min(mss << 2, max_per_txd); |
|
4868 max_txd_pwr = fls(max_per_txd) - 1; |
|
4869 |
|
4870 /* |
|
4871 * TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
4872 * points to just header, pull a few bytes of payload from |
|
4873 * frags into skb->data |
|
4874 */ |
|
4875 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
4876 /* |
|
4877 * we do this workaround for ES2LAN, but it is un-necessary, |
|
4878 * avoiding it could save a lot of cycles |
|
4879 */ |
|
4880 if (skb->data_len && (hdr_len == len)) { |
|
4881 unsigned int pull_size; |
|
4882 |
|
4883 pull_size = min((unsigned int)4, skb->data_len); |
|
4884 if (!__pskb_pull_tail(skb, pull_size)) { |
|
4885 e_err("__pskb_pull_tail failed.\n"); |
|
4886 if (!adapter->ecdev) |
|
4887 dev_kfree_skb_any(skb); |
|
4888 return NETDEV_TX_OK; |
|
4889 } |
|
4890 len = skb_headlen(skb); |
|
4891 } |
|
4892 } |
|
4893 |
|
4894 /* reserve a descriptor for the offload context */ |
|
4895 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
4896 count++; |
|
4897 count++; |
|
4898 |
|
4899 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
4900 |
|
4901 nr_frags = skb_shinfo(skb)->nr_frags; |
|
4902 for (f = 0; f < nr_frags; f++) |
|
4903 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
4904 max_txd_pwr); |
|
4905 |
|
4906 if (adapter->hw.mac.tx_pkt_filtering) |
|
4907 e1000_transfer_dhcp_info(adapter, skb); |
|
4908 |
|
4909 /* |
|
4910 * need: count + 2 desc gap to keep tail from touching |
|
4911 * head, otherwise try next time |
|
4912 */ |
|
4913 if (!adapter->ecdev && e1000_maybe_stop_tx(netdev, count + 2)) |
|
4914 return NETDEV_TX_BUSY; |
|
4915 |
|
4916 if (vlan_tx_tag_present(skb)) { |
|
4917 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
4918 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
4919 } |
|
4920 |
|
4921 first = tx_ring->next_to_use; |
|
4922 |
|
4923 tso = e1000_tso(adapter, skb); |
|
4924 if (tso < 0) { |
|
4925 if (!adapter->ecdev) |
|
4926 dev_kfree_skb_any(skb); |
|
4927 return NETDEV_TX_OK; |
|
4928 } |
|
4929 |
|
4930 if (tso) |
|
4931 tx_flags |= E1000_TX_FLAGS_TSO; |
|
4932 else if (e1000_tx_csum(adapter, skb)) |
|
4933 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
4934 |
|
4935 /* |
|
4936 * Old method was to assume IPv4 packet by default if TSO was enabled. |
|
4937 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
4938 * no longer assume, we must. |
|
4939 */ |
|
4940 if (skb->protocol == htons(ETH_P_IP)) |
|
4941 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
4942 |
|
4943 /* if count is 0 then mapping error has occured */ |
|
4944 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); |
|
4945 if (count) { |
|
4946 e1000_tx_queue(adapter, tx_flags, count); |
|
4947 /* Make sure there is space in the ring for the next send. */ |
|
4948 if (!adapter->ecdev) |
|
4949 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); |
|
4950 |
|
4951 } else { |
|
4952 if (!adapter->ecdev) |
|
4953 dev_kfree_skb_any(skb); |
|
4954 tx_ring->buffer_info[first].time_stamp = 0; |
|
4955 tx_ring->next_to_use = first; |
|
4956 } |
|
4957 |
|
4958 return NETDEV_TX_OK; |
|
4959 } |
|
4960 |
|
4961 /** |
|
4962 * e1000_tx_timeout - Respond to a Tx Hang |
|
4963 * @netdev: network interface device structure |
|
4964 **/ |
|
4965 static void e1000_tx_timeout(struct net_device *netdev) |
|
4966 { |
|
4967 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4968 |
|
4969 /* Do the reset outside of interrupt context */ |
|
4970 adapter->tx_timeout_count++; |
|
4971 schedule_work(&adapter->reset_task); |
|
4972 } |
|
4973 |
|
4974 static void e1000_reset_task(struct work_struct *work) |
|
4975 { |
|
4976 struct e1000_adapter *adapter; |
|
4977 adapter = container_of(work, struct e1000_adapter, reset_task); |
|
4978 |
|
4979 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4980 (adapter->flags & FLAG_RX_RESTART_NOW))) { |
|
4981 e1000e_dump(adapter); |
|
4982 e_err("Reset adapter\n"); |
|
4983 } |
|
4984 e1000e_reinit_locked(adapter); |
|
4985 } |
|
4986 |
|
4987 /** |
|
4988 * e1000_get_stats - Get System Network Statistics |
|
4989 * @netdev: network interface device structure |
|
4990 * |
|
4991 * Returns the address of the device statistics structure. |
|
4992 * The statistics are actually updated from the timer callback. |
|
4993 **/ |
|
4994 static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
|
4995 { |
|
4996 /* only return the current stats */ |
|
4997 return &netdev->stats; |
|
4998 } |
|
4999 |
|
5000 /** |
|
5001 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
5002 * @netdev: network interface device structure |
|
5003 * @new_mtu: new value for maximum frame size |
|
5004 * |
|
5005 * Returns 0 on success, negative on failure |
|
5006 **/ |
|
5007 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
5008 { |
|
5009 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5010 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
|
5011 |
|
5012 if (adapter->ecdev) |
|
5013 return -EBUSY; |
|
5014 |
|
5015 /* Jumbo frame support */ |
|
5016 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
|
5017 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { |
|
5018 e_err("Jumbo Frames not supported.\n"); |
|
5019 return -EINVAL; |
|
5020 } |
|
5021 |
|
5022 /* Supported frame sizes */ |
|
5023 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
|
5024 (max_frame > adapter->max_hw_frame_size)) { |
|
5025 e_err("Unsupported MTU setting\n"); |
|
5026 return -EINVAL; |
|
5027 } |
|
5028 |
|
5029 /* Jumbo frame workaround on 82579 requires CRC be stripped */ |
|
5030 if ((adapter->hw.mac.type == e1000_pch2lan) && |
|
5031 !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
|
5032 (new_mtu > ETH_DATA_LEN)) { |
|
5033 e_err("Jumbo Frames not supported on 82579 when CRC " |
|
5034 "stripping is disabled.\n"); |
|
5035 return -EINVAL; |
|
5036 } |
|
5037 |
|
5038 /* 82573 Errata 17 */ |
|
5039 if (((adapter->hw.mac.type == e1000_82573) || |
|
5040 (adapter->hw.mac.type == e1000_82574)) && |
|
5041 (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) { |
|
5042 adapter->flags2 |= FLAG2_DISABLE_ASPM_L1; |
|
5043 e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1); |
|
5044 } |
|
5045 |
|
5046 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
5047 msleep(1); |
|
5048 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
|
5049 adapter->max_frame_size = max_frame; |
|
5050 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
|
5051 netdev->mtu = new_mtu; |
|
5052 if (netif_running(netdev)) |
|
5053 e1000e_down(adapter); |
|
5054 |
|
5055 /* |
|
5056 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
5057 * means we reserve 2 more, this pushes us to allocate from the next |
|
5058 * larger slab size. |
|
5059 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
5060 * However with the new *_jumbo_rx* routines, jumbo receives will use |
|
5061 * fragmented skbs |
|
5062 */ |
|
5063 |
|
5064 if (max_frame <= 2048) |
|
5065 adapter->rx_buffer_len = 2048; |
|
5066 else |
|
5067 adapter->rx_buffer_len = 4096; |
|
5068 |
|
5069 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
5070 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
|
5071 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
|
5072 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
|
5073 + ETH_FCS_LEN; |
|
5074 |
|
5075 if (netif_running(netdev)) |
|
5076 e1000e_up(adapter); |
|
5077 else |
|
5078 e1000e_reset(adapter); |
|
5079 |
|
5080 clear_bit(__E1000_RESETTING, &adapter->state); |
|
5081 |
|
5082 return 0; |
|
5083 } |
|
5084 |
|
5085 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
5086 int cmd) |
|
5087 { |
|
5088 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5089 struct mii_ioctl_data *data = if_mii(ifr); |
|
5090 |
|
5091 if (adapter->hw.phy.media_type != e1000_media_type_copper) |
|
5092 return -EOPNOTSUPP; |
|
5093 |
|
5094 switch (cmd) { |
|
5095 case SIOCGMIIPHY: |
|
5096 data->phy_id = adapter->hw.phy.addr; |
|
5097 break; |
|
5098 case SIOCGMIIREG: |
|
5099 e1000_phy_read_status(adapter); |
|
5100 |
|
5101 switch (data->reg_num & 0x1F) { |
|
5102 case MII_BMCR: |
|
5103 data->val_out = adapter->phy_regs.bmcr; |
|
5104 break; |
|
5105 case MII_BMSR: |
|
5106 data->val_out = adapter->phy_regs.bmsr; |
|
5107 break; |
|
5108 case MII_PHYSID1: |
|
5109 data->val_out = (adapter->hw.phy.id >> 16); |
|
5110 break; |
|
5111 case MII_PHYSID2: |
|
5112 data->val_out = (adapter->hw.phy.id & 0xFFFF); |
|
5113 break; |
|
5114 case MII_ADVERTISE: |
|
5115 data->val_out = adapter->phy_regs.advertise; |
|
5116 break; |
|
5117 case MII_LPA: |
|
5118 data->val_out = adapter->phy_regs.lpa; |
|
5119 break; |
|
5120 case MII_EXPANSION: |
|
5121 data->val_out = adapter->phy_regs.expansion; |
|
5122 break; |
|
5123 case MII_CTRL1000: |
|
5124 data->val_out = adapter->phy_regs.ctrl1000; |
|
5125 break; |
|
5126 case MII_STAT1000: |
|
5127 data->val_out = adapter->phy_regs.stat1000; |
|
5128 break; |
|
5129 case MII_ESTATUS: |
|
5130 data->val_out = adapter->phy_regs.estatus; |
|
5131 break; |
|
5132 default: |
|
5133 return -EIO; |
|
5134 } |
|
5135 break; |
|
5136 case SIOCSMIIREG: |
|
5137 default: |
|
5138 return -EOPNOTSUPP; |
|
5139 } |
|
5140 return 0; |
|
5141 } |
|
5142 |
|
5143 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
5144 { |
|
5145 switch (cmd) { |
|
5146 case SIOCGMIIPHY: |
|
5147 case SIOCGMIIREG: |
|
5148 case SIOCSMIIREG: |
|
5149 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
5150 default: |
|
5151 return -EOPNOTSUPP; |
|
5152 } |
|
5153 } |
|
5154 |
|
5155 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
|
5156 { |
|
5157 struct e1000_hw *hw = &adapter->hw; |
|
5158 u32 i, mac_reg; |
|
5159 u16 phy_reg; |
|
5160 int retval = 0; |
|
5161 |
|
5162 /* copy MAC RARs to PHY RARs */ |
|
5163 e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
|
5164 |
|
5165 /* copy MAC MTA to PHY MTA */ |
|
5166 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
|
5167 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); |
|
5168 e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF)); |
|
5169 e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF)); |
|
5170 } |
|
5171 |
|
5172 /* configure PHY Rx Control register */ |
|
5173 e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg); |
|
5174 mac_reg = er32(RCTL); |
|
5175 if (mac_reg & E1000_RCTL_UPE) |
|
5176 phy_reg |= BM_RCTL_UPE; |
|
5177 if (mac_reg & E1000_RCTL_MPE) |
|
5178 phy_reg |= BM_RCTL_MPE; |
|
5179 phy_reg &= ~(BM_RCTL_MO_MASK); |
|
5180 if (mac_reg & E1000_RCTL_MO_3) |
|
5181 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) |
|
5182 << BM_RCTL_MO_SHIFT); |
|
5183 if (mac_reg & E1000_RCTL_BAM) |
|
5184 phy_reg |= BM_RCTL_BAM; |
|
5185 if (mac_reg & E1000_RCTL_PMCF) |
|
5186 phy_reg |= BM_RCTL_PMCF; |
|
5187 mac_reg = er32(CTRL); |
|
5188 if (mac_reg & E1000_CTRL_RFCE) |
|
5189 phy_reg |= BM_RCTL_RFCE; |
|
5190 e1e_wphy(&adapter->hw, BM_RCTL, phy_reg); |
|
5191 |
|
5192 /* enable PHY wakeup in MAC register */ |
|
5193 ew32(WUFC, wufc); |
|
5194 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); |
|
5195 |
|
5196 /* configure and enable PHY wakeup in PHY registers */ |
|
5197 e1e_wphy(&adapter->hw, BM_WUFC, wufc); |
|
5198 e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); |
|
5199 |
|
5200 /* activate PHY wakeup */ |
|
5201 retval = hw->phy.ops.acquire(hw); |
|
5202 if (retval) { |
|
5203 e_err("Could not acquire PHY\n"); |
|
5204 return retval; |
|
5205 } |
|
5206 e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
5207 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); |
|
5208 retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg); |
|
5209 if (retval) { |
|
5210 e_err("Could not read PHY page 769\n"); |
|
5211 goto out; |
|
5212 } |
|
5213 phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
|
5214 retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg); |
|
5215 if (retval) |
|
5216 e_err("Could not set PHY Host Wakeup bit\n"); |
|
5217 out: |
|
5218 hw->phy.ops.release(hw); |
|
5219 |
|
5220 return retval; |
|
5221 } |
|
5222 |
|
5223 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
|
5224 bool runtime) |
|
5225 { |
|
5226 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5227 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5228 struct e1000_hw *hw = &adapter->hw; |
|
5229 u32 ctrl, ctrl_ext, rctl, status; |
|
5230 /* Runtime suspend should only enable wakeup for link changes */ |
|
5231 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
|
5232 int retval = 0; |
|
5233 |
|
5234 netif_device_detach(netdev); |
|
5235 |
|
5236 if (netif_running(netdev)) { |
|
5237 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
5238 e1000e_down(adapter); |
|
5239 e1000_free_irq(adapter); |
|
5240 } |
|
5241 e1000e_reset_interrupt_capability(adapter); |
|
5242 |
|
5243 retval = pci_save_state(pdev); |
|
5244 if (retval) |
|
5245 return retval; |
|
5246 |
|
5247 status = er32(STATUS); |
|
5248 if (status & E1000_STATUS_LU) |
|
5249 wufc &= ~E1000_WUFC_LNKC; |
|
5250 |
|
5251 if (wufc) { |
|
5252 e1000_setup_rctl(adapter); |
|
5253 e1000_set_multi(netdev); |
|
5254 |
|
5255 /* turn on all-multi mode if wake on multicast is enabled */ |
|
5256 if (wufc & E1000_WUFC_MC) { |
|
5257 rctl = er32(RCTL); |
|
5258 rctl |= E1000_RCTL_MPE; |
|
5259 ew32(RCTL, rctl); |
|
5260 } |
|
5261 |
|
5262 ctrl = er32(CTRL); |
|
5263 /* advertise wake from D3Cold */ |
|
5264 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
5265 /* phy power management enable */ |
|
5266 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
5267 ctrl |= E1000_CTRL_ADVD3WUC; |
|
5268 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) |
|
5269 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; |
|
5270 ew32(CTRL, ctrl); |
|
5271 |
|
5272 if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
|
5273 adapter->hw.phy.media_type == |
|
5274 e1000_media_type_internal_serdes) { |
|
5275 /* keep the laser running in D3 */ |
|
5276 ctrl_ext = er32(CTRL_EXT); |
|
5277 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
|
5278 ew32(CTRL_EXT, ctrl_ext); |
|
5279 } |
|
5280 |
|
5281 if (adapter->flags & FLAG_IS_ICH) |
|
5282 e1000e_disable_gig_wol_ich8lan(&adapter->hw); |
|
5283 |
|
5284 /* Allow time for pending master requests to run */ |
|
5285 e1000e_disable_pcie_master(&adapter->hw); |
|
5286 |
|
5287 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5288 /* enable wakeup by the PHY */ |
|
5289 retval = e1000_init_phy_wakeup(adapter, wufc); |
|
5290 if (retval) |
|
5291 return retval; |
|
5292 } else { |
|
5293 /* enable wakeup by the MAC */ |
|
5294 ew32(WUFC, wufc); |
|
5295 ew32(WUC, E1000_WUC_PME_EN); |
|
5296 } |
|
5297 } else { |
|
5298 ew32(WUC, 0); |
|
5299 ew32(WUFC, 0); |
|
5300 } |
|
5301 |
|
5302 *enable_wake = !!wufc; |
|
5303 |
|
5304 /* make sure adapter isn't asleep if manageability is enabled */ |
|
5305 if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
|
5306 (hw->mac.ops.check_mng_mode(hw))) |
|
5307 *enable_wake = true; |
|
5308 |
|
5309 if (adapter->hw.phy.type == e1000_phy_igp_3) |
|
5310 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
|
5311 |
|
5312 /* |
|
5313 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
5314 * would have already happened in close and is redundant. |
|
5315 */ |
|
5316 e1000_release_hw_control(adapter); |
|
5317 |
|
5318 pci_disable_device(pdev); |
|
5319 |
|
5320 return 0; |
|
5321 } |
|
5322 |
|
5323 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) |
|
5324 { |
|
5325 if (sleep && wake) { |
|
5326 pci_prepare_to_sleep(pdev); |
|
5327 return; |
|
5328 } |
|
5329 |
|
5330 pci_wake_from_d3(pdev, wake); |
|
5331 pci_set_power_state(pdev, PCI_D3hot); |
|
5332 } |
|
5333 |
|
5334 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, |
|
5335 bool wake) |
|
5336 { |
|
5337 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5338 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5339 |
|
5340 /* |
|
5341 * The pci-e switch on some quad port adapters will report a |
|
5342 * correctable error when the MAC transitions from D0 to D3. To |
|
5343 * prevent this we need to mask off the correctable errors on the |
|
5344 * downstream port of the pci-e switch. |
|
5345 */ |
|
5346 if (adapter->flags & FLAG_IS_QUAD_PORT) { |
|
5347 struct pci_dev *us_dev = pdev->bus->self; |
|
5348 int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); |
|
5349 u16 devctl; |
|
5350 |
|
5351 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); |
|
5352 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, |
|
5353 (devctl & ~PCI_EXP_DEVCTL_CERE)); |
|
5354 |
|
5355 e1000_power_off(pdev, sleep, wake); |
|
5356 |
|
5357 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); |
|
5358 } else { |
|
5359 e1000_power_off(pdev, sleep, wake); |
|
5360 } |
|
5361 } |
|
5362 |
|
5363 #ifdef CONFIG_PCIEASPM |
|
5364 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5365 { |
|
5366 pci_disable_link_state(pdev, state); |
|
5367 } |
|
5368 #else |
|
5369 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5370 { |
|
5371 int pos; |
|
5372 u16 reg16; |
|
5373 |
|
5374 /* |
|
5375 * Both device and parent should have the same ASPM setting. |
|
5376 * Disable ASPM in downstream component first and then upstream. |
|
5377 */ |
|
5378 pos = pci_pcie_cap(pdev); |
|
5379 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16); |
|
5380 reg16 &= ~state; |
|
5381 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16); |
|
5382 |
|
5383 if (!pdev->bus->self) |
|
5384 return; |
|
5385 |
|
5386 pos = pci_pcie_cap(pdev->bus->self); |
|
5387 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16); |
|
5388 reg16 &= ~state; |
|
5389 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16); |
|
5390 } |
|
5391 #endif |
|
5392 void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5393 { |
|
5394 dev_info(&pdev->dev, "Disabling ASPM %s %s\n", |
|
5395 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "", |
|
5396 (state & PCIE_LINK_STATE_L1) ? "L1" : ""); |
|
5397 |
|
5398 __e1000e_disable_aspm(pdev, state); |
|
5399 } |
|
5400 |
|
5401 #ifdef CONFIG_PM_OPS |
|
5402 static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
|
5403 { |
|
5404 return !!adapter->tx_ring->buffer_info; |
|
5405 } |
|
5406 |
|
5407 static int __e1000_resume(struct pci_dev *pdev) |
|
5408 { |
|
5409 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5410 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5411 struct e1000_hw *hw = &adapter->hw; |
|
5412 u32 err; |
|
5413 |
|
5414 if (adapter->ecdev) |
|
5415 return -EBUSY; |
|
5416 |
|
5417 pci_set_power_state(pdev, PCI_D0); |
|
5418 pci_restore_state(pdev); |
|
5419 pci_save_state(pdev); |
|
5420 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5421 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); |
|
5422 |
|
5423 e1000e_set_interrupt_capability(adapter); |
|
5424 if (netif_running(netdev)) { |
|
5425 err = e1000_request_irq(adapter); |
|
5426 if (err) |
|
5427 return err; |
|
5428 } |
|
5429 |
|
5430 e1000e_power_up_phy(adapter); |
|
5431 |
|
5432 /* report the system wakeup cause from S3/S4 */ |
|
5433 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5434 u16 phy_data; |
|
5435 |
|
5436 e1e_rphy(&adapter->hw, BM_WUS, &phy_data); |
|
5437 if (phy_data) { |
|
5438 e_info("PHY Wakeup cause - %s\n", |
|
5439 phy_data & E1000_WUS_EX ? "Unicast Packet" : |
|
5440 phy_data & E1000_WUS_MC ? "Multicast Packet" : |
|
5441 phy_data & E1000_WUS_BC ? "Broadcast Packet" : |
|
5442 phy_data & E1000_WUS_MAG ? "Magic Packet" : |
|
5443 phy_data & E1000_WUS_LNKC ? "Link Status " |
|
5444 " Change" : "other"); |
|
5445 } |
|
5446 e1e_wphy(&adapter->hw, BM_WUS, ~0); |
|
5447 } else { |
|
5448 u32 wus = er32(WUS); |
|
5449 if (wus) { |
|
5450 e_info("MAC Wakeup cause - %s\n", |
|
5451 wus & E1000_WUS_EX ? "Unicast Packet" : |
|
5452 wus & E1000_WUS_MC ? "Multicast Packet" : |
|
5453 wus & E1000_WUS_BC ? "Broadcast Packet" : |
|
5454 wus & E1000_WUS_MAG ? "Magic Packet" : |
|
5455 wus & E1000_WUS_LNKC ? "Link Status Change" : |
|
5456 "other"); |
|
5457 } |
|
5458 ew32(WUS, ~0); |
|
5459 } |
|
5460 |
|
5461 e1000e_reset(adapter); |
|
5462 |
|
5463 e1000_init_manageability_pt(adapter); |
|
5464 |
|
5465 if (netif_running(netdev)) |
|
5466 e1000e_up(adapter); |
|
5467 |
|
5468 netif_device_attach(netdev); |
|
5469 |
|
5470 /* |
|
5471 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5472 * is up. For all other cases, let the f/w know that the h/w is now |
|
5473 * under the control of the driver. |
|
5474 */ |
|
5475 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5476 e1000_get_hw_control(adapter); |
|
5477 |
|
5478 return 0; |
|
5479 } |
|
5480 |
|
5481 #ifdef CONFIG_PM_SLEEP |
|
5482 static int e1000_suspend(struct device *dev) |
|
5483 { |
|
5484 struct pci_dev *pdev = to_pci_dev(dev); |
|
5485 int retval; |
|
5486 bool wake; |
|
5487 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5488 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5489 |
|
5490 if (adapter->ecdev) |
|
5491 return -EBUSY; |
|
5492 |
|
5493 retval = __e1000_shutdown(pdev, &wake, false); |
|
5494 if (!retval) |
|
5495 e1000_complete_shutdown(pdev, true, wake); |
|
5496 |
|
5497 return retval; |
|
5498 } |
|
5499 |
|
5500 static int e1000_resume(struct device *dev) |
|
5501 { |
|
5502 struct pci_dev *pdev = to_pci_dev(dev); |
|
5503 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5504 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5505 |
|
5506 if (e1000e_pm_ready(adapter)) |
|
5507 adapter->idle_check = true; |
|
5508 |
|
5509 return __e1000_resume(pdev); |
|
5510 } |
|
5511 #endif /* CONFIG_PM_SLEEP */ |
|
5512 |
|
5513 #ifdef CONFIG_PM_RUNTIME |
|
5514 static int e1000_runtime_suspend(struct device *dev) |
|
5515 { |
|
5516 struct pci_dev *pdev = to_pci_dev(dev); |
|
5517 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5518 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5519 |
|
5520 if (e1000e_pm_ready(adapter)) { |
|
5521 bool wake; |
|
5522 |
|
5523 __e1000_shutdown(pdev, &wake, true); |
|
5524 } |
|
5525 |
|
5526 return 0; |
|
5527 } |
|
5528 |
|
5529 static int e1000_idle(struct device *dev) |
|
5530 { |
|
5531 struct pci_dev *pdev = to_pci_dev(dev); |
|
5532 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5533 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5534 |
|
5535 if (!e1000e_pm_ready(adapter)) |
|
5536 return 0; |
|
5537 |
|
5538 if (adapter->idle_check) { |
|
5539 adapter->idle_check = false; |
|
5540 if (!e1000e_has_link(adapter)) |
|
5541 pm_schedule_suspend(dev, MSEC_PER_SEC); |
|
5542 } |
|
5543 |
|
5544 return -EBUSY; |
|
5545 } |
|
5546 |
|
5547 static int e1000_runtime_resume(struct device *dev) |
|
5548 { |
|
5549 struct pci_dev *pdev = to_pci_dev(dev); |
|
5550 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5551 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5552 |
|
5553 if (!e1000e_pm_ready(adapter)) |
|
5554 return 0; |
|
5555 |
|
5556 adapter->idle_check = !dev->power.runtime_auto; |
|
5557 return __e1000_resume(pdev); |
|
5558 } |
|
5559 #endif /* CONFIG_PM_RUNTIME */ |
|
5560 #endif /* CONFIG_PM_OPS */ |
|
5561 |
|
5562 static void e1000_shutdown(struct pci_dev *pdev) |
|
5563 { |
|
5564 bool wake = false; |
|
5565 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5566 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5567 |
|
5568 if (adapter->ecdev) |
|
5569 return; |
|
5570 |
|
5571 __e1000_shutdown(pdev, &wake, false); |
|
5572 |
|
5573 if (system_state == SYSTEM_POWER_OFF) |
|
5574 e1000_complete_shutdown(pdev, false, wake); |
|
5575 } |
|
5576 |
|
5577 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5578 /* |
|
5579 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
5580 * without having to re-enable interrupts. It's not called while |
|
5581 * the interrupt routine is executing. |
|
5582 */ |
|
5583 static void e1000_netpoll(struct net_device *netdev) |
|
5584 { |
|
5585 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5586 |
|
5587 disable_irq(adapter->pdev->irq); |
|
5588 e1000_intr(adapter->pdev->irq, netdev); |
|
5589 |
|
5590 enable_irq(adapter->pdev->irq); |
|
5591 } |
|
5592 #endif |
|
5593 |
|
5594 /** |
|
5595 * e1000_io_error_detected - called when PCI error is detected |
|
5596 * @pdev: Pointer to PCI device |
|
5597 * @state: The current pci connection state |
|
5598 * |
|
5599 * This function is called after a PCI bus error affecting |
|
5600 * this device has been detected. |
|
5601 */ |
|
5602 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
5603 pci_channel_state_t state) |
|
5604 { |
|
5605 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5606 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5607 |
|
5608 netif_device_detach(netdev); |
|
5609 |
|
5610 if (state == pci_channel_io_perm_failure) |
|
5611 return PCI_ERS_RESULT_DISCONNECT; |
|
5612 |
|
5613 if (netif_running(netdev)) |
|
5614 e1000e_down(adapter); |
|
5615 pci_disable_device(pdev); |
|
5616 |
|
5617 /* Request a slot slot reset. */ |
|
5618 return PCI_ERS_RESULT_NEED_RESET; |
|
5619 } |
|
5620 |
|
5621 /** |
|
5622 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
5623 * @pdev: Pointer to PCI device |
|
5624 * |
|
5625 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
5626 * resembles the first-half of the e1000_resume routine. |
|
5627 */ |
|
5628 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
5629 { |
|
5630 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5631 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5632 struct e1000_hw *hw = &adapter->hw; |
|
5633 int err; |
|
5634 pci_ers_result_t result; |
|
5635 |
|
5636 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5637 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); |
|
5638 err = pci_enable_device_mem(pdev); |
|
5639 if (err) { |
|
5640 dev_err(&pdev->dev, |
|
5641 "Cannot re-enable PCI device after reset.\n"); |
|
5642 result = PCI_ERS_RESULT_DISCONNECT; |
|
5643 } else { |
|
5644 pci_set_master(pdev); |
|
5645 pdev->state_saved = true; |
|
5646 pci_restore_state(pdev); |
|
5647 |
|
5648 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5649 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5650 |
|
5651 e1000e_reset(adapter); |
|
5652 ew32(WUS, ~0); |
|
5653 result = PCI_ERS_RESULT_RECOVERED; |
|
5654 } |
|
5655 |
|
5656 pci_cleanup_aer_uncorrect_error_status(pdev); |
|
5657 |
|
5658 return result; |
|
5659 } |
|
5660 |
|
5661 /** |
|
5662 * e1000_io_resume - called when traffic can start flowing again. |
|
5663 * @pdev: Pointer to PCI device |
|
5664 * |
|
5665 * This callback is called when the error recovery driver tells us that |
|
5666 * its OK to resume normal operation. Implementation resembles the |
|
5667 * second-half of the e1000_resume routine. |
|
5668 */ |
|
5669 static void e1000_io_resume(struct pci_dev *pdev) |
|
5670 { |
|
5671 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5672 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5673 |
|
5674 e1000_init_manageability_pt(adapter); |
|
5675 |
|
5676 if (netif_running(netdev)) { |
|
5677 if (e1000e_up(adapter)) { |
|
5678 dev_err(&pdev->dev, |
|
5679 "can't bring device back up after reset\n"); |
|
5680 return; |
|
5681 } |
|
5682 } |
|
5683 |
|
5684 netif_device_attach(netdev); |
|
5685 |
|
5686 /* |
|
5687 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5688 * is up. For all other cases, let the f/w know that the h/w is now |
|
5689 * under the control of the driver. |
|
5690 */ |
|
5691 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5692 e1000_get_hw_control(adapter); |
|
5693 |
|
5694 } |
|
5695 |
|
5696 static void e1000_print_device_info(struct e1000_adapter *adapter) |
|
5697 { |
|
5698 struct e1000_hw *hw = &adapter->hw; |
|
5699 struct net_device *netdev = adapter->netdev; |
|
5700 u32 pba_num; |
|
5701 |
|
5702 /* print bus type/speed/width info */ |
|
5703 e_info("(PCI Express:2.5GB/s:%s) %pM\n", |
|
5704 /* bus width */ |
|
5705 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
|
5706 "Width x1"), |
|
5707 /* MAC address */ |
|
5708 netdev->dev_addr); |
|
5709 e_info("Intel(R) PRO/%s Network Connection\n", |
|
5710 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); |
|
5711 e1000e_read_pba_num(hw, &pba_num); |
|
5712 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
|
5713 hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff)); |
|
5714 } |
|
5715 |
|
5716 static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
|
5717 { |
|
5718 struct e1000_hw *hw = &adapter->hw; |
|
5719 int ret_val; |
|
5720 u16 buf = 0; |
|
5721 |
|
5722 if (hw->mac.type != e1000_82573) |
|
5723 return; |
|
5724 |
|
5725 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); |
|
5726 if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) { |
|
5727 /* Deep Smart Power Down (DSPD) */ |
|
5728 dev_warn(&adapter->pdev->dev, |
|
5729 "Warning: detected DSPD enabled in EEPROM\n"); |
|
5730 } |
|
5731 } |
|
5732 |
|
5733 static const struct net_device_ops e1000e_netdev_ops = { |
|
5734 .ndo_open = e1000_open, |
|
5735 .ndo_stop = e1000_close, |
|
5736 .ndo_start_xmit = e1000_xmit_frame, |
|
5737 .ndo_get_stats = e1000_get_stats, |
|
5738 .ndo_set_multicast_list = e1000_set_multi, |
|
5739 .ndo_set_mac_address = e1000_set_mac, |
|
5740 .ndo_change_mtu = e1000_change_mtu, |
|
5741 .ndo_do_ioctl = e1000_ioctl, |
|
5742 .ndo_tx_timeout = e1000_tx_timeout, |
|
5743 .ndo_validate_addr = eth_validate_addr, |
|
5744 |
|
5745 .ndo_vlan_rx_register = e1000_vlan_rx_register, |
|
5746 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
5747 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
5748 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5749 .ndo_poll_controller = e1000_netpoll, |
|
5750 #endif |
|
5751 }; |
|
5752 |
|
5753 /** |
|
5754 * ec_poll - Ethercat poll Routine |
|
5755 * @netdev: net device structure |
|
5756 * |
|
5757 * This function can never fail. |
|
5758 * |
|
5759 **/ |
|
5760 void ec_poll(struct net_device *netdev) |
|
5761 { |
|
5762 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5763 |
|
5764 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
5765 e1000_watchdog((unsigned long) adapter); |
|
5766 adapter->ec_watchdog_jiffies = jiffies; |
|
5767 } |
|
5768 |
|
5769 #ifdef CONFIG_PCI_MSI |
|
5770 e1000_intr_msi(0,netdev); |
|
5771 #else |
|
5772 e1000_intr(0,netdev); |
|
5773 #endif |
|
5774 } |
|
5775 |
|
5776 /** |
|
5777 * e1000_probe - Device Initialization Routine |
|
5778 * @pdev: PCI device information struct |
|
5779 * @ent: entry in e1000_pci_tbl |
|
5780 * |
|
5781 * Returns 0 on success, negative on failure |
|
5782 * |
|
5783 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
5784 * The OS initialization, configuring of the adapter private structure, |
|
5785 * and a hardware reset occur. |
|
5786 **/ |
|
5787 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
5788 const struct pci_device_id *ent) |
|
5789 { |
|
5790 struct net_device *netdev; |
|
5791 struct e1000_adapter *adapter; |
|
5792 struct e1000_hw *hw; |
|
5793 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; |
|
5794 resource_size_t mmio_start, mmio_len; |
|
5795 resource_size_t flash_start, flash_len; |
|
5796 |
|
5797 static int cards_found; |
|
5798 int i, err, pci_using_dac; |
|
5799 u16 eeprom_data = 0; |
|
5800 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
5801 |
|
5802 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5803 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); |
|
5804 |
|
5805 err = pci_enable_device_mem(pdev); |
|
5806 if (err) |
|
5807 return err; |
|
5808 |
|
5809 pci_using_dac = 0; |
|
5810 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
5811 if (!err) { |
|
5812 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
5813 if (!err) |
|
5814 pci_using_dac = 1; |
|
5815 } else { |
|
5816 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
5817 if (err) { |
|
5818 err = dma_set_coherent_mask(&pdev->dev, |
|
5819 DMA_BIT_MASK(32)); |
|
5820 if (err) { |
|
5821 dev_err(&pdev->dev, "No usable DMA " |
|
5822 "configuration, aborting\n"); |
|
5823 goto err_dma; |
|
5824 } |
|
5825 } |
|
5826 } |
|
5827 |
|
5828 err = pci_request_selected_regions_exclusive(pdev, |
|
5829 pci_select_bars(pdev, IORESOURCE_MEM), |
|
5830 e1000e_driver_name); |
|
5831 if (err) |
|
5832 goto err_pci_reg; |
|
5833 |
|
5834 /* AER (Advanced Error Reporting) hooks */ |
|
5835 pci_enable_pcie_error_reporting(pdev); |
|
5836 |
|
5837 pci_set_master(pdev); |
|
5838 /* PCI config space info */ |
|
5839 err = pci_save_state(pdev); |
|
5840 if (err) |
|
5841 goto err_alloc_etherdev; |
|
5842 |
|
5843 err = -ENOMEM; |
|
5844 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
5845 if (!netdev) |
|
5846 goto err_alloc_etherdev; |
|
5847 |
|
5848 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
5849 |
|
5850 netdev->irq = pdev->irq; |
|
5851 |
|
5852 pci_set_drvdata(pdev, netdev); |
|
5853 adapter = netdev_priv(netdev); |
|
5854 hw = &adapter->hw; |
|
5855 adapter->netdev = netdev; |
|
5856 adapter->pdev = pdev; |
|
5857 adapter->ei = ei; |
|
5858 adapter->pba = ei->pba; |
|
5859 adapter->flags = ei->flags; |
|
5860 adapter->flags2 = ei->flags2; |
|
5861 adapter->hw.adapter = adapter; |
|
5862 adapter->hw.mac.type = ei->mac; |
|
5863 adapter->max_hw_frame_size = ei->max_hw_frame_size; |
|
5864 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; |
|
5865 |
|
5866 mmio_start = pci_resource_start(pdev, 0); |
|
5867 mmio_len = pci_resource_len(pdev, 0); |
|
5868 |
|
5869 err = -EIO; |
|
5870 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
5871 if (!adapter->hw.hw_addr) |
|
5872 goto err_ioremap; |
|
5873 |
|
5874 if ((adapter->flags & FLAG_HAS_FLASH) && |
|
5875 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
5876 flash_start = pci_resource_start(pdev, 1); |
|
5877 flash_len = pci_resource_len(pdev, 1); |
|
5878 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
5879 if (!adapter->hw.flash_address) |
|
5880 goto err_flashmap; |
|
5881 } |
|
5882 |
|
5883 /* construct the net_device struct */ |
|
5884 netdev->netdev_ops = &e1000e_netdev_ops; |
|
5885 e1000e_set_ethtool_ops(netdev); |
|
5886 netdev->watchdog_timeo = 5 * HZ; |
|
5887 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
5888 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
5889 |
|
5890 netdev->mem_start = mmio_start; |
|
5891 netdev->mem_end = mmio_start + mmio_len; |
|
5892 |
|
5893 adapter->bd_number = cards_found++; |
|
5894 |
|
5895 e1000e_check_options(adapter); |
|
5896 |
|
5897 /* setup adapter struct */ |
|
5898 err = e1000_sw_init(adapter); |
|
5899 if (err) |
|
5900 goto err_sw_init; |
|
5901 |
|
5902 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
|
5903 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
|
5904 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
|
5905 |
|
5906 err = ei->get_variants(adapter); |
|
5907 if (err) |
|
5908 goto err_hw_init; |
|
5909 |
|
5910 if ((adapter->flags & FLAG_IS_ICH) && |
|
5911 (adapter->flags & FLAG_READ_ONLY_NVM)) |
|
5912 e1000e_write_protect_nvm_ich8lan(&adapter->hw); |
|
5913 |
|
5914 hw->mac.ops.get_bus_info(&adapter->hw); |
|
5915 |
|
5916 adapter->hw.phy.autoneg_wait_to_complete = 0; |
|
5917 |
|
5918 /* Copper options */ |
|
5919 if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
|
5920 adapter->hw.phy.mdix = AUTO_ALL_MODES; |
|
5921 adapter->hw.phy.disable_polarity_correction = 0; |
|
5922 adapter->hw.phy.ms_type = e1000_ms_hw_default; |
|
5923 } |
|
5924 |
|
5925 if (e1000_check_reset_block(&adapter->hw)) |
|
5926 e_info("PHY reset is blocked due to SOL/IDER session.\n"); |
|
5927 |
|
5928 netdev->features = NETIF_F_SG | |
|
5929 NETIF_F_HW_CSUM | |
|
5930 NETIF_F_HW_VLAN_TX | |
|
5931 NETIF_F_HW_VLAN_RX; |
|
5932 |
|
5933 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
5934 netdev->features |= NETIF_F_HW_VLAN_FILTER; |
|
5935 |
|
5936 netdev->features |= NETIF_F_TSO; |
|
5937 netdev->features |= NETIF_F_TSO6; |
|
5938 |
|
5939 netdev->vlan_features |= NETIF_F_TSO; |
|
5940 netdev->vlan_features |= NETIF_F_TSO6; |
|
5941 netdev->vlan_features |= NETIF_F_HW_CSUM; |
|
5942 netdev->vlan_features |= NETIF_F_SG; |
|
5943 |
|
5944 if (pci_using_dac) { |
|
5945 netdev->features |= NETIF_F_HIGHDMA; |
|
5946 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
5947 } |
|
5948 |
|
5949 if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
|
5950 adapter->flags |= FLAG_MNG_PT_ENABLED; |
|
5951 |
|
5952 /* |
|
5953 * before reading the NVM, reset the controller to |
|
5954 * put the device in a known good starting state |
|
5955 */ |
|
5956 adapter->hw.mac.ops.reset_hw(&adapter->hw); |
|
5957 |
|
5958 /* |
|
5959 * systems with ASPM and others may see the checksum fail on the first |
|
5960 * attempt. Let's give it a few tries |
|
5961 */ |
|
5962 for (i = 0;; i++) { |
|
5963 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) |
|
5964 break; |
|
5965 if (i == 2) { |
|
5966 e_err("The NVM Checksum Is Not Valid\n"); |
|
5967 err = -EIO; |
|
5968 goto err_eeprom; |
|
5969 } |
|
5970 } |
|
5971 |
|
5972 e1000_eeprom_checks(adapter); |
|
5973 |
|
5974 /* copy the MAC address */ |
|
5975 if (e1000e_read_mac_addr(&adapter->hw)) |
|
5976 e_err("NVM Read Error while reading MAC address\n"); |
|
5977 |
|
5978 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
5979 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
5980 |
|
5981 if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
5982 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr); |
|
5983 err = -EIO; |
|
5984 goto err_eeprom; |
|
5985 } |
|
5986 |
|
5987 init_timer(&adapter->watchdog_timer); |
|
5988 adapter->watchdog_timer.function = e1000_watchdog; |
|
5989 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
5990 |
|
5991 init_timer(&adapter->phy_info_timer); |
|
5992 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
5993 adapter->phy_info_timer.data = (unsigned long) adapter; |
|
5994 |
|
5995 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
5996 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); |
|
5997 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
|
5998 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); |
|
5999 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
|
6000 |
|
6001 /* Initialize link parameters. User can change them with ethtool */ |
|
6002 adapter->hw.mac.autoneg = 1; |
|
6003 adapter->fc_autoneg = 1; |
|
6004 adapter->hw.fc.requested_mode = e1000_fc_default; |
|
6005 adapter->hw.fc.current_mode = e1000_fc_default; |
|
6006 adapter->hw.phy.autoneg_advertised = 0x2f; |
|
6007 |
|
6008 /* ring size defaults */ |
|
6009 adapter->rx_ring->count = 256; |
|
6010 adapter->tx_ring->count = 256; |
|
6011 |
|
6012 /* |
|
6013 * Initial Wake on LAN setting - If APM wake is enabled in |
|
6014 * the EEPROM, enable the ACPI Magic Packet filter |
|
6015 */ |
|
6016 if (adapter->flags & FLAG_APME_IN_WUC) { |
|
6017 /* APME bit in EEPROM is mapped to WUC.APME */ |
|
6018 eeprom_data = er32(WUC); |
|
6019 eeprom_apme_mask = E1000_WUC_APME; |
|
6020 if ((hw->mac.type > e1000_ich10lan) && |
|
6021 (eeprom_data & E1000_WUC_PHY_WAKE)) |
|
6022 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
|
6023 } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
|
6024 if (adapter->flags & FLAG_APME_CHECK_PORT_B && |
|
6025 (adapter->hw.bus.func == 1)) |
|
6026 e1000_read_nvm(&adapter->hw, |
|
6027 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
6028 else |
|
6029 e1000_read_nvm(&adapter->hw, |
|
6030 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
6031 } |
|
6032 |
|
6033 /* fetch WoL from EEPROM */ |
|
6034 if (eeprom_data & eeprom_apme_mask) |
|
6035 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
6036 |
|
6037 /* |
|
6038 * now that we have the eeprom settings, apply the special cases |
|
6039 * where the eeprom may be wrong or the board simply won't support |
|
6040 * wake on lan on a particular port |
|
6041 */ |
|
6042 if (!(adapter->flags & FLAG_HAS_WOL)) |
|
6043 adapter->eeprom_wol = 0; |
|
6044 |
|
6045 /* initialize the wol settings based on the eeprom settings */ |
|
6046 adapter->wol = adapter->eeprom_wol; |
|
6047 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
6048 |
|
6049 /* save off EEPROM version number */ |
|
6050 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
|
6051 |
|
6052 /* reset the hardware with the new settings */ |
|
6053 e1000e_reset(adapter); |
|
6054 |
|
6055 /* |
|
6056 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
6057 * is up. For all other cases, let the f/w know that the h/w is now |
|
6058 * under the control of the driver. |
|
6059 */ |
|
6060 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6061 e1000_get_hw_control(adapter); |
|
6062 |
|
6063 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
6064 if (adapter->ecdev) { |
|
6065 if (ecdev_open(adapter->ecdev)) { |
|
6066 ecdev_withdraw(adapter->ecdev); |
|
6067 goto err_register; |
|
6068 } |
|
6069 } else { |
|
6070 strcpy(netdev->name, "eth%d"); |
|
6071 err = register_netdev(netdev); |
|
6072 if (err) |
|
6073 goto err_register; |
|
6074 |
|
6075 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
6076 netif_carrier_off(netdev); |
|
6077 } |
|
6078 |
|
6079 e1000_print_device_info(adapter); |
|
6080 |
|
6081 if (pci_dev_run_wake(pdev)) |
|
6082 pm_runtime_put_noidle(&pdev->dev); |
|
6083 |
|
6084 return 0; |
|
6085 |
|
6086 err_register: |
|
6087 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6088 e1000_release_hw_control(adapter); |
|
6089 err_eeprom: |
|
6090 if (!e1000_check_reset_block(&adapter->hw)) |
|
6091 e1000_phy_hw_reset(&adapter->hw); |
|
6092 err_hw_init: |
|
6093 |
|
6094 kfree(adapter->tx_ring); |
|
6095 kfree(adapter->rx_ring); |
|
6096 err_sw_init: |
|
6097 if (adapter->hw.flash_address) |
|
6098 iounmap(adapter->hw.flash_address); |
|
6099 e1000e_reset_interrupt_capability(adapter); |
|
6100 err_flashmap: |
|
6101 iounmap(adapter->hw.hw_addr); |
|
6102 err_ioremap: |
|
6103 free_netdev(netdev); |
|
6104 err_alloc_etherdev: |
|
6105 pci_release_selected_regions(pdev, |
|
6106 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6107 err_pci_reg: |
|
6108 err_dma: |
|
6109 pci_disable_device(pdev); |
|
6110 return err; |
|
6111 } |
|
6112 |
|
6113 /** |
|
6114 * e1000_remove - Device Removal Routine |
|
6115 * @pdev: PCI device information struct |
|
6116 * |
|
6117 * e1000_remove is called by the PCI subsystem to alert the driver |
|
6118 * that it should release a PCI device. The could be caused by a |
|
6119 * Hot-Plug event, or because the driver is going to be removed from |
|
6120 * memory. |
|
6121 **/ |
|
6122 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
6123 { |
|
6124 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6125 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6126 bool down = test_bit(__E1000_DOWN, &adapter->state); |
|
6127 |
|
6128 /* |
|
6129 * flush_scheduled work may reschedule our watchdog task, so |
|
6130 * explicitly disable watchdog tasks from being rescheduled |
|
6131 */ |
|
6132 if (!down) |
|
6133 set_bit(__E1000_DOWN, &adapter->state); |
|
6134 del_timer_sync(&adapter->watchdog_timer); |
|
6135 del_timer_sync(&adapter->phy_info_timer); |
|
6136 |
|
6137 cancel_work_sync(&adapter->reset_task); |
|
6138 cancel_work_sync(&adapter->watchdog_task); |
|
6139 cancel_work_sync(&adapter->downshift_task); |
|
6140 cancel_work_sync(&adapter->update_phy_task); |
|
6141 cancel_work_sync(&adapter->print_hang_task); |
|
6142 flush_scheduled_work(); |
|
6143 |
|
6144 if (!(netdev->flags & IFF_UP)) |
|
6145 e1000_power_down_phy(adapter); |
|
6146 |
|
6147 /* Don't lie to e1000_close() down the road. */ |
|
6148 if (!down) |
|
6149 clear_bit(__E1000_DOWN, &adapter->state); |
|
6150 |
|
6151 if (adapter->ecdev) { |
|
6152 ecdev_close(adapter->ecdev); |
|
6153 ecdev_withdraw(adapter->ecdev); |
|
6154 } else { |
|
6155 unregister_netdev(netdev); |
|
6156 } |
|
6157 |
|
6158 if (pci_dev_run_wake(pdev)) |
|
6159 pm_runtime_get_noresume(&pdev->dev); |
|
6160 |
|
6161 /* |
|
6162 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
6163 * would have already happened in close and is redundant. |
|
6164 */ |
|
6165 e1000_release_hw_control(adapter); |
|
6166 |
|
6167 e1000e_reset_interrupt_capability(adapter); |
|
6168 kfree(adapter->tx_ring); |
|
6169 kfree(adapter->rx_ring); |
|
6170 |
|
6171 iounmap(adapter->hw.hw_addr); |
|
6172 if (adapter->hw.flash_address) |
|
6173 iounmap(adapter->hw.flash_address); |
|
6174 pci_release_selected_regions(pdev, |
|
6175 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6176 |
|
6177 free_netdev(netdev); |
|
6178 |
|
6179 /* AER disable */ |
|
6180 pci_disable_pcie_error_reporting(pdev); |
|
6181 |
|
6182 pci_disable_device(pdev); |
|
6183 } |
|
6184 |
|
6185 /* PCI Error Recovery (ERS) */ |
|
6186 static struct pci_error_handlers e1000_err_handler = { |
|
6187 .error_detected = e1000_io_error_detected, |
|
6188 .slot_reset = e1000_io_slot_reset, |
|
6189 .resume = e1000_io_resume, |
|
6190 }; |
|
6191 |
|
6192 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
|
6193 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
|
6194 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, |
|
6195 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, |
|
6196 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, |
|
6197 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
|
6198 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, |
|
6199 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
|
6200 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, |
|
6201 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, |
|
6202 |
|
6203 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
|
6204 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, |
|
6205 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, |
|
6206 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, |
|
6207 |
|
6208 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
|
6209 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, |
|
6210 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, |
|
6211 |
|
6212 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
|
6213 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
|
6214 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
|
6215 |
|
6216 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
|
6217 board_80003es2lan }, |
|
6218 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), |
|
6219 board_80003es2lan }, |
|
6220 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), |
|
6221 board_80003es2lan }, |
|
6222 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), |
|
6223 board_80003es2lan }, |
|
6224 |
|
6225 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
|
6226 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, |
|
6227 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, |
|
6228 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, |
|
6229 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, |
|
6230 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, |
|
6231 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, |
|
6232 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
|
6233 |
|
6234 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
|
6235 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, |
|
6236 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, |
|
6237 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, |
|
6238 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, |
|
6239 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
|
6240 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
|
6241 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, |
|
6242 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, |
|
6243 |
|
6244 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, |
|
6245 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, |
|
6246 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, |
|
6247 |
|
6248 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
|
6249 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, |
|
6250 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
|
6251 |
|
6252 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
|
6253 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, |
|
6254 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, |
|
6255 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, |
|
6256 |
|
6257 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
|
6258 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, |
|
6259 |
|
6260 { } /* terminate list */ |
|
6261 }; |
|
6262 //MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
|
6263 |
|
6264 #ifdef CONFIG_PM_OPS |
|
6265 static const struct dev_pm_ops e1000_pm_ops = { |
|
6266 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume) |
|
6267 SET_RUNTIME_PM_OPS(e1000_runtime_suspend, |
|
6268 e1000_runtime_resume, e1000_idle) |
|
6269 }; |
|
6270 #endif |
|
6271 |
|
6272 /* PCI Device API Driver */ |
|
6273 static struct pci_driver e1000_driver = { |
|
6274 .name = e1000e_driver_name, |
|
6275 .id_table = e1000_pci_tbl, |
|
6276 .probe = e1000_probe, |
|
6277 .remove = __devexit_p(e1000_remove), |
|
6278 #ifdef CONFIG_PM_OPS |
|
6279 .driver.pm = &e1000_pm_ops, |
|
6280 #endif |
|
6281 .shutdown = e1000_shutdown, |
|
6282 .err_handler = &e1000_err_handler |
|
6283 }; |
|
6284 |
|
6285 /** |
|
6286 * e1000_init_module - Driver Registration Routine |
|
6287 * |
|
6288 * e1000_init_module is the first routine called when the driver is |
|
6289 * loaded. All it does is register with the PCI subsystem. |
|
6290 **/ |
|
6291 static int __init e1000_init_module(void) |
|
6292 { |
|
6293 int ret; |
|
6294 pr_info("EtherCAT-capable Intel(R) PRO/1000 Network Driver - %s\n", |
|
6295 e1000e_driver_version); |
|
6296 pr_info("Copyright (c) 1999 - 2010 Intel Corporation.\n"); |
|
6297 ret = pci_register_driver(&e1000_driver); |
|
6298 |
|
6299 return ret; |
|
6300 } |
|
6301 module_init(e1000_init_module); |
|
6302 |
|
6303 /** |
|
6304 * e1000_exit_module - Driver Exit Cleanup Routine |
|
6305 * |
|
6306 * e1000_exit_module is called just before the driver is removed |
|
6307 * from memory. |
|
6308 **/ |
|
6309 static void __exit e1000_exit_module(void) |
|
6310 { |
|
6311 pci_unregister_driver(&e1000_driver); |
|
6312 } |
|
6313 module_exit(e1000_exit_module); |
|
6314 |
|
6315 |
|
6316 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
|
6317 MODULE_DESCRIPTION("Ethercat-capable Intel(R) PRO/1000 Network Driver"); |
|
6318 MODULE_LICENSE("GPL"); |
|
6319 MODULE_VERSION(DRV_VERSION); |
|
6320 |
|
6321 /* e1000_main.c */ |