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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2012 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 vim: noexpandtab |
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28 |
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29 *******************************************************************************/ |
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30 |
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31 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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32 |
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33 #include <linux/module.h> |
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34 #include <linux/types.h> |
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35 #include <linux/init.h> |
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36 #include <linux/pci.h> |
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37 #include <linux/vmalloc.h> |
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38 #include <linux/pagemap.h> |
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39 #include <linux/delay.h> |
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40 #include <linux/netdevice.h> |
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41 #include <linux/interrupt.h> |
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42 #include <linux/tcp.h> |
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43 #include <linux/ipv6.h> |
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44 #include <linux/slab.h> |
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45 #include <net/checksum.h> |
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46 #include <net/ip6_checksum.h> |
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47 #include <linux/mii.h> |
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48 #include <linux/ethtool.h> |
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49 #include <linux/if_vlan.h> |
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50 #include <linux/cpu.h> |
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51 #include <linux/smp.h> |
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52 #include <linux/pm_qos.h> |
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53 #include <linux/pm_runtime.h> |
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54 #include <linux/aer.h> |
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55 #include <linux/prefetch.h> |
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56 |
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57 #include "e1000-3.4-ethercat.h" |
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58 |
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59 #define DRV_EXTRAVERSION "-k-EtherCAT" |
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60 |
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61 #define DRV_VERSION "1.9.5" DRV_EXTRAVERSION |
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62 char e1000e_driver_name[] = "ec_e1000e"; |
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63 const char e1000e_driver_version[] = DRV_VERSION; |
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64 |
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65 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
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66 static int debug = -1; |
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67 module_param(debug, int, 0); |
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68 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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69 |
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70 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state); |
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71 |
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72 static const struct e1000_info *e1000_info_tbl[] = { |
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73 [board_82571] = &e1000_82571_info, |
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74 [board_82572] = &e1000_82572_info, |
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75 [board_82573] = &e1000_82573_info, |
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76 [board_82574] = &e1000_82574_info, |
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77 [board_82583] = &e1000_82583_info, |
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78 [board_80003es2lan] = &e1000_es2_info, |
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79 [board_ich8lan] = &e1000_ich8_info, |
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80 [board_ich9lan] = &e1000_ich9_info, |
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81 [board_ich10lan] = &e1000_ich10_info, |
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82 [board_pchlan] = &e1000_pch_info, |
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83 [board_pch2lan] = &e1000_pch2_info, |
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84 }; |
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85 |
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86 struct e1000_reg_info { |
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87 u32 ofs; |
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88 char *name; |
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89 }; |
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90 |
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91 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */ |
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92 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */ |
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93 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */ |
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94 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */ |
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95 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */ |
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96 |
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97 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */ |
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98 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */ |
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99 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */ |
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100 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */ |
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101 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */ |
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102 |
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103 static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
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104 |
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105 /* General Registers */ |
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106 {E1000_CTRL, "CTRL"}, |
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107 {E1000_STATUS, "STATUS"}, |
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108 {E1000_CTRL_EXT, "CTRL_EXT"}, |
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109 |
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110 /* Interrupt Registers */ |
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111 {E1000_ICR, "ICR"}, |
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112 |
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113 /* Rx Registers */ |
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114 {E1000_RCTL, "RCTL"}, |
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115 {E1000_RDLEN, "RDLEN"}, |
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116 {E1000_RDH, "RDH"}, |
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117 {E1000_RDT, "RDT"}, |
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118 {E1000_RDTR, "RDTR"}, |
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119 {E1000_RXDCTL(0), "RXDCTL"}, |
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120 {E1000_ERT, "ERT"}, |
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121 {E1000_RDBAL, "RDBAL"}, |
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122 {E1000_RDBAH, "RDBAH"}, |
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123 {E1000_RDFH, "RDFH"}, |
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124 {E1000_RDFT, "RDFT"}, |
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125 {E1000_RDFHS, "RDFHS"}, |
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126 {E1000_RDFTS, "RDFTS"}, |
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127 {E1000_RDFPC, "RDFPC"}, |
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128 |
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129 /* Tx Registers */ |
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130 {E1000_TCTL, "TCTL"}, |
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131 {E1000_TDBAL, "TDBAL"}, |
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132 {E1000_TDBAH, "TDBAH"}, |
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133 {E1000_TDLEN, "TDLEN"}, |
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134 {E1000_TDH, "TDH"}, |
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135 {E1000_TDT, "TDT"}, |
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136 {E1000_TIDV, "TIDV"}, |
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137 {E1000_TXDCTL(0), "TXDCTL"}, |
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138 {E1000_TADV, "TADV"}, |
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139 {E1000_TARC(0), "TARC"}, |
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140 {E1000_TDFH, "TDFH"}, |
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141 {E1000_TDFT, "TDFT"}, |
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142 {E1000_TDFHS, "TDFHS"}, |
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143 {E1000_TDFTS, "TDFTS"}, |
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144 {E1000_TDFPC, "TDFPC"}, |
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145 |
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146 /* List Terminator */ |
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147 {0, NULL} |
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148 }; |
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149 |
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150 /* |
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151 * e1000_regdump - register printout routine |
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152 */ |
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153 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
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154 { |
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155 int n = 0; |
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156 char rname[16]; |
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157 u32 regs[8]; |
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158 |
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159 switch (reginfo->ofs) { |
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160 case E1000_RXDCTL(0): |
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161 for (n = 0; n < 2; n++) |
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162 regs[n] = __er32(hw, E1000_RXDCTL(n)); |
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163 break; |
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164 case E1000_TXDCTL(0): |
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165 for (n = 0; n < 2; n++) |
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166 regs[n] = __er32(hw, E1000_TXDCTL(n)); |
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167 break; |
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168 case E1000_TARC(0): |
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169 for (n = 0; n < 2; n++) |
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170 regs[n] = __er32(hw, E1000_TARC(n)); |
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171 break; |
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172 default: |
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173 pr_info("%-15s %08x\n", |
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174 reginfo->name, __er32(hw, reginfo->ofs)); |
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175 return; |
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176 } |
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177 |
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178 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); |
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179 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]); |
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180 } |
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181 |
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182 /* |
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183 * e1000e_dump - Print registers, Tx-ring and Rx-ring |
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184 */ |
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185 static void e1000e_dump(struct e1000_adapter *adapter) |
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186 { |
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187 struct net_device *netdev = adapter->netdev; |
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188 struct e1000_hw *hw = &adapter->hw; |
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189 struct e1000_reg_info *reginfo; |
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190 struct e1000_ring *tx_ring = adapter->tx_ring; |
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191 struct e1000_tx_desc *tx_desc; |
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192 struct my_u0 { |
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193 __le64 a; |
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194 __le64 b; |
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195 } *u0; |
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196 struct e1000_buffer *buffer_info; |
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197 struct e1000_ring *rx_ring = adapter->rx_ring; |
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198 union e1000_rx_desc_packet_split *rx_desc_ps; |
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199 union e1000_rx_desc_extended *rx_desc; |
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200 struct my_u1 { |
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201 __le64 a; |
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202 __le64 b; |
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203 __le64 c; |
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204 __le64 d; |
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205 } *u1; |
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206 u32 staterr; |
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207 int i = 0; |
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208 |
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209 if (!netif_msg_hw(adapter)) |
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210 return; |
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211 |
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212 /* Print netdevice Info */ |
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213 if (netdev) { |
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214 dev_info(&adapter->pdev->dev, "Net device Info\n"); |
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215 pr_info("Device Name state trans_start last_rx\n"); |
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216 pr_info("%-15s %016lX %016lX %016lX\n", |
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217 netdev->name, netdev->state, netdev->trans_start, |
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218 netdev->last_rx); |
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219 } |
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220 |
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221 /* Print Registers */ |
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222 dev_info(&adapter->pdev->dev, "Register Dump\n"); |
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223 pr_info(" Register Name Value\n"); |
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224 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
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225 reginfo->name; reginfo++) { |
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226 e1000_regdump(hw, reginfo); |
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227 } |
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228 |
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229 /* Print Tx Ring Summary */ |
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230 if (!netdev || !netif_running(netdev)) |
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231 return; |
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232 |
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233 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
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234 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
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235 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
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236 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", |
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237 0, tx_ring->next_to_use, tx_ring->next_to_clean, |
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238 (unsigned long long)buffer_info->dma, |
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239 buffer_info->length, |
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240 buffer_info->next_to_watch, |
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241 (unsigned long long)buffer_info->time_stamp); |
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242 |
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243 /* Print Tx Ring */ |
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244 if (!netif_msg_tx_done(adapter)) |
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245 goto rx_ring_summary; |
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246 |
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247 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
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248 |
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249 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) |
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250 * |
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251 * Legacy Transmit Descriptor |
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252 * +--------------------------------------------------------------+ |
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253 * 0 | Buffer Address [63:0] (Reserved on Write Back) | |
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254 * +--------------------------------------------------------------+ |
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255 * 8 | Special | CSS | Status | CMD | CSO | Length | |
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256 * +--------------------------------------------------------------+ |
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257 * 63 48 47 36 35 32 31 24 23 16 15 0 |
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258 * |
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259 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload |
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260 * 63 48 47 40 39 32 31 16 15 8 7 0 |
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261 * +----------------------------------------------------------------+ |
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262 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | |
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263 * +----------------------------------------------------------------+ |
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264 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | |
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265 * +----------------------------------------------------------------+ |
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266 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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267 * |
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268 * Extended Data Descriptor (DTYP=0x1) |
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269 * +----------------------------------------------------------------+ |
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270 * 0 | Buffer Address [63:0] | |
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271 * +----------------------------------------------------------------+ |
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272 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | |
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273 * +----------------------------------------------------------------+ |
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274 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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275 */ |
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276 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n"); |
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277 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n"); |
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278 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n"); |
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279 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
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280 const char *next_desc; |
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281 tx_desc = E1000_TX_DESC(*tx_ring, i); |
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282 buffer_info = &tx_ring->buffer_info[i]; |
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283 u0 = (struct my_u0 *)tx_desc; |
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284 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
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285 next_desc = " NTC/U"; |
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286 else if (i == tx_ring->next_to_use) |
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287 next_desc = " NTU"; |
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288 else if (i == tx_ring->next_to_clean) |
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289 next_desc = " NTC"; |
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290 else |
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291 next_desc = ""; |
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292 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n", |
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293 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : |
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294 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), |
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295 i, |
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296 (unsigned long long)le64_to_cpu(u0->a), |
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297 (unsigned long long)le64_to_cpu(u0->b), |
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298 (unsigned long long)buffer_info->dma, |
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299 buffer_info->length, buffer_info->next_to_watch, |
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300 (unsigned long long)buffer_info->time_stamp, |
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301 buffer_info->skb, next_desc); |
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302 |
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303 if (netif_msg_pktdata(adapter) && buffer_info->dma != 0) |
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304 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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305 16, 1, phys_to_virt(buffer_info->dma), |
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306 buffer_info->length, true); |
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307 } |
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308 |
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309 /* Print Rx Ring Summary */ |
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310 rx_ring_summary: |
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311 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
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312 pr_info("Queue [NTU] [NTC]\n"); |
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313 pr_info(" %5d %5X %5X\n", |
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314 0, rx_ring->next_to_use, rx_ring->next_to_clean); |
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315 |
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316 /* Print Rx Ring */ |
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317 if (!netif_msg_rx_status(adapter)) |
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318 return; |
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319 |
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320 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
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321 switch (adapter->rx_ps_pages) { |
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322 case 1: |
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323 case 2: |
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324 case 3: |
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325 /* [Extended] Packet Split Receive Descriptor Format |
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326 * |
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327 * +-----------------------------------------------------+ |
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328 * 0 | Buffer Address 0 [63:0] | |
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329 * +-----------------------------------------------------+ |
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330 * 8 | Buffer Address 1 [63:0] | |
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331 * +-----------------------------------------------------+ |
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332 * 16 | Buffer Address 2 [63:0] | |
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333 * +-----------------------------------------------------+ |
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334 * 24 | Buffer Address 3 [63:0] | |
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335 * +-----------------------------------------------------+ |
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336 */ |
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337 pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n"); |
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338 /* [Extended] Receive Descriptor (Write-Back) Format |
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339 * |
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340 * 63 48 47 32 31 13 12 8 7 4 3 0 |
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341 * +------------------------------------------------------+ |
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342 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | |
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343 * | Checksum | Ident | | Queue | | Type | |
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344 * +------------------------------------------------------+ |
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345 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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346 * +------------------------------------------------------+ |
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347 * 63 48 47 32 31 20 19 0 |
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348 */ |
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349 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [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 const char *next_desc; |
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352 buffer_info = &rx_ring->buffer_info[i]; |
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353 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); |
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354 u1 = (struct my_u1 *)rx_desc_ps; |
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355 staterr = |
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356 le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
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357 |
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358 if (i == rx_ring->next_to_use) |
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359 next_desc = " NTU"; |
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360 else if (i == rx_ring->next_to_clean) |
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361 next_desc = " NTC"; |
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362 else |
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363 next_desc = ""; |
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364 |
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365 if (staterr & E1000_RXD_STAT_DD) { |
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366 /* Descriptor Done */ |
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367 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n", |
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368 "RWB", 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 buffer_info->skb, next_desc); |
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374 } else { |
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375 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n", |
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376 "R ", i, |
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377 (unsigned long long)le64_to_cpu(u1->a), |
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378 (unsigned long long)le64_to_cpu(u1->b), |
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379 (unsigned long long)le64_to_cpu(u1->c), |
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380 (unsigned long long)le64_to_cpu(u1->d), |
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381 (unsigned long long)buffer_info->dma, |
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382 buffer_info->skb, next_desc); |
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383 |
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384 if (netif_msg_pktdata(adapter)) |
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385 print_hex_dump(KERN_INFO, "", |
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386 DUMP_PREFIX_ADDRESS, 16, 1, |
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387 phys_to_virt(buffer_info->dma), |
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388 adapter->rx_ps_bsize0, true); |
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389 } |
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390 } |
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391 break; |
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392 default: |
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393 case 0: |
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394 /* Extended Receive Descriptor (Read) Format |
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395 * |
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396 * +-----------------------------------------------------+ |
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397 * 0 | Buffer Address [63:0] | |
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398 * +-----------------------------------------------------+ |
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399 * 8 | Reserved | |
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400 * +-----------------------------------------------------+ |
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401 */ |
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402 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n"); |
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403 /* Extended Receive Descriptor (Write-Back) Format |
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404 * |
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405 * 63 48 47 32 31 24 23 4 3 0 |
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406 * +------------------------------------------------------+ |
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407 * | RSS Hash | | | | |
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408 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | |
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409 * | Packet | IP | | | Type | |
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410 * | Checksum | Ident | | | | |
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411 * +------------------------------------------------------+ |
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412 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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413 * +------------------------------------------------------+ |
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414 * 63 48 47 32 31 20 19 0 |
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415 */ |
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416 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n"); |
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417 |
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418 for (i = 0; i < rx_ring->count; i++) { |
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419 const char *next_desc; |
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420 |
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421 buffer_info = &rx_ring->buffer_info[i]; |
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422 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
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423 u1 = (struct my_u1 *)rx_desc; |
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424 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
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425 |
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426 if (i == rx_ring->next_to_use) |
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427 next_desc = " NTU"; |
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428 else if (i == rx_ring->next_to_clean) |
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429 next_desc = " NTC"; |
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430 else |
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431 next_desc = ""; |
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432 |
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433 if (staterr & E1000_RXD_STAT_DD) { |
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434 /* Descriptor Done */ |
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435 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n", |
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436 "RWB", i, |
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437 (unsigned long long)le64_to_cpu(u1->a), |
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438 (unsigned long long)le64_to_cpu(u1->b), |
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439 buffer_info->skb, next_desc); |
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440 } else { |
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441 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n", |
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442 "R ", i, |
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443 (unsigned long long)le64_to_cpu(u1->a), |
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444 (unsigned long long)le64_to_cpu(u1->b), |
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445 (unsigned long long)buffer_info->dma, |
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446 buffer_info->skb, next_desc); |
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447 |
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448 if (netif_msg_pktdata(adapter)) |
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449 print_hex_dump(KERN_INFO, "", |
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450 DUMP_PREFIX_ADDRESS, 16, |
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451 1, |
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452 phys_to_virt |
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453 (buffer_info->dma), |
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454 adapter->rx_buffer_len, |
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455 true); |
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456 } |
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457 } |
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458 } |
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459 } |
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460 |
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461 /** |
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462 * e1000_desc_unused - calculate if we have unused descriptors |
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463 **/ |
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464 static int e1000_desc_unused(struct e1000_ring *ring) |
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465 { |
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466 if (ring->next_to_clean > ring->next_to_use) |
|
467 return ring->next_to_clean - ring->next_to_use - 1; |
|
468 |
|
469 return ring->count + ring->next_to_clean - ring->next_to_use - 1; |
|
470 } |
|
471 |
|
472 /** |
|
473 * e1000_receive_skb - helper function to handle Rx indications |
|
474 * @adapter: board private structure |
|
475 * @status: descriptor status field as written by hardware |
|
476 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
477 * @skb: pointer to sk_buff to be indicated to stack |
|
478 **/ |
|
479 static void e1000_receive_skb(struct e1000_adapter *adapter, |
|
480 struct net_device *netdev, struct sk_buff *skb, |
|
481 u8 status, __le16 vlan) |
|
482 { |
|
483 u16 tag = le16_to_cpu(vlan); |
|
484 skb->protocol = eth_type_trans(skb, netdev); |
|
485 |
|
486 if (status & E1000_RXD_STAT_VP) |
|
487 __vlan_hwaccel_put_tag(skb, tag); |
|
488 |
|
489 napi_gro_receive(&adapter->napi, skb); |
|
490 } |
|
491 |
|
492 /** |
|
493 * e1000_rx_checksum - Receive Checksum Offload |
|
494 * @adapter: board private structure |
|
495 * @status_err: receive descriptor status and error fields |
|
496 * @csum: receive descriptor csum field |
|
497 * @sk_buff: socket buffer with received data |
|
498 **/ |
|
499 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
500 struct sk_buff *skb) |
|
501 { |
|
502 u16 status = (u16)status_err; |
|
503 u8 errors = (u8)(status_err >> 24); |
|
504 |
|
505 skb_checksum_none_assert(skb); |
|
506 |
|
507 /* Rx checksum disabled */ |
|
508 if (!(adapter->netdev->features & NETIF_F_RXCSUM)) |
|
509 return; |
|
510 |
|
511 /* Ignore Checksum bit is set */ |
|
512 if (status & E1000_RXD_STAT_IXSM) |
|
513 return; |
|
514 |
|
515 /* TCP/UDP checksum error bit or IP checksum error bit is set */ |
|
516 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) { |
|
517 /* let the stack verify checksum errors */ |
|
518 adapter->hw_csum_err++; |
|
519 return; |
|
520 } |
|
521 |
|
522 /* TCP/UDP Checksum has not been calculated */ |
|
523 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
524 return; |
|
525 |
|
526 /* It must be a TCP or UDP packet with a valid checksum */ |
|
527 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
528 adapter->hw_csum_good++; |
|
529 } |
|
530 |
|
531 /** |
|
532 * e1000e_update_tail_wa - helper function for e1000e_update_[rt]dt_wa() |
|
533 * @hw: pointer to the HW structure |
|
534 * @tail: address of tail descriptor register |
|
535 * @i: value to write to tail descriptor register |
|
536 * |
|
537 * When updating the tail register, the ME could be accessing Host CSR |
|
538 * registers at the same time. Normally, this is handled in h/w by an |
|
539 * arbiter but on some parts there is a bug that acknowledges Host accesses |
|
540 * later than it should which could result in the descriptor register to |
|
541 * have an incorrect value. Workaround this by checking the FWSM register |
|
542 * which has bit 24 set while ME is accessing Host CSR registers, wait |
|
543 * if it is set and try again a number of times. |
|
544 **/ |
|
545 static inline s32 e1000e_update_tail_wa(struct e1000_hw *hw, void __iomem *tail, |
|
546 unsigned int i) |
|
547 { |
|
548 unsigned int j = 0; |
|
549 |
|
550 while ((j++ < E1000_ICH_FWSM_PCIM2PCI_COUNT) && |
|
551 (er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI)) |
|
552 udelay(50); |
|
553 |
|
554 writel(i, tail); |
|
555 |
|
556 if ((j == E1000_ICH_FWSM_PCIM2PCI_COUNT) && (i != readl(tail))) |
|
557 return E1000_ERR_SWFW_SYNC; |
|
558 |
|
559 return 0; |
|
560 } |
|
561 |
|
562 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i) |
|
563 { |
|
564 struct e1000_adapter *adapter = rx_ring->adapter; |
|
565 struct e1000_hw *hw = &adapter->hw; |
|
566 |
|
567 if (e1000e_update_tail_wa(hw, rx_ring->tail, i)) { |
|
568 u32 rctl = er32(RCTL); |
|
569 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
570 e_err("ME firmware caused invalid RDT - resetting\n"); |
|
571 schedule_work(&adapter->reset_task); |
|
572 } |
|
573 } |
|
574 |
|
575 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i) |
|
576 { |
|
577 struct e1000_adapter *adapter = tx_ring->adapter; |
|
578 struct e1000_hw *hw = &adapter->hw; |
|
579 |
|
580 if (e1000e_update_tail_wa(hw, tx_ring->tail, i)) { |
|
581 u32 tctl = er32(TCTL); |
|
582 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
583 e_err("ME firmware caused invalid TDT - resetting\n"); |
|
584 schedule_work(&adapter->reset_task); |
|
585 } |
|
586 } |
|
587 |
|
588 /** |
|
589 * e1000_alloc_rx_buffers - Replace used receive buffers |
|
590 * @rx_ring: Rx descriptor ring |
|
591 **/ |
|
592 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring, |
|
593 int cleaned_count, gfp_t gfp) |
|
594 { |
|
595 struct e1000_adapter *adapter = rx_ring->adapter; |
|
596 struct net_device *netdev = adapter->netdev; |
|
597 struct pci_dev *pdev = adapter->pdev; |
|
598 union e1000_rx_desc_extended *rx_desc; |
|
599 struct e1000_buffer *buffer_info; |
|
600 struct sk_buff *skb; |
|
601 unsigned int i; |
|
602 unsigned int bufsz = adapter->rx_buffer_len; |
|
603 |
|
604 i = rx_ring->next_to_use; |
|
605 buffer_info = &rx_ring->buffer_info[i]; |
|
606 |
|
607 while (cleaned_count--) { |
|
608 skb = buffer_info->skb; |
|
609 if (skb) { |
|
610 skb_trim(skb, 0); |
|
611 goto map_skb; |
|
612 } |
|
613 |
|
614 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
615 if (!skb) { |
|
616 /* Better luck next round */ |
|
617 adapter->alloc_rx_buff_failed++; |
|
618 break; |
|
619 } |
|
620 |
|
621 buffer_info->skb = skb; |
|
622 map_skb: |
|
623 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
624 adapter->rx_buffer_len, |
|
625 DMA_FROM_DEVICE); |
|
626 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
627 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
628 adapter->rx_dma_failed++; |
|
629 break; |
|
630 } |
|
631 |
|
632 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
633 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
634 |
|
635 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
636 /* |
|
637 * Force memory writes to complete before letting h/w |
|
638 * know there are new descriptors to fetch. (Only |
|
639 * applicable for weak-ordered memory model archs, |
|
640 * such as IA-64). |
|
641 */ |
|
642 wmb(); |
|
643 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
644 e1000e_update_rdt_wa(rx_ring, i); |
|
645 else |
|
646 writel(i, rx_ring->tail); |
|
647 } |
|
648 i++; |
|
649 if (i == rx_ring->count) |
|
650 i = 0; |
|
651 buffer_info = &rx_ring->buffer_info[i]; |
|
652 } |
|
653 |
|
654 rx_ring->next_to_use = i; |
|
655 } |
|
656 |
|
657 /** |
|
658 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
659 * @rx_ring: Rx descriptor ring |
|
660 **/ |
|
661 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring, |
|
662 int cleaned_count, gfp_t gfp) |
|
663 { |
|
664 struct e1000_adapter *adapter = rx_ring->adapter; |
|
665 struct net_device *netdev = adapter->netdev; |
|
666 struct pci_dev *pdev = adapter->pdev; |
|
667 union e1000_rx_desc_packet_split *rx_desc; |
|
668 struct e1000_buffer *buffer_info; |
|
669 struct e1000_ps_page *ps_page; |
|
670 struct sk_buff *skb; |
|
671 unsigned int i, j; |
|
672 |
|
673 i = rx_ring->next_to_use; |
|
674 buffer_info = &rx_ring->buffer_info[i]; |
|
675 |
|
676 while (cleaned_count--) { |
|
677 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
678 |
|
679 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
680 ps_page = &buffer_info->ps_pages[j]; |
|
681 if (j >= adapter->rx_ps_pages) { |
|
682 /* all unused desc entries get hw null ptr */ |
|
683 rx_desc->read.buffer_addr[j + 1] = |
|
684 ~cpu_to_le64(0); |
|
685 continue; |
|
686 } |
|
687 if (!ps_page->page) { |
|
688 ps_page->page = alloc_page(gfp); |
|
689 if (!ps_page->page) { |
|
690 adapter->alloc_rx_buff_failed++; |
|
691 goto no_buffers; |
|
692 } |
|
693 ps_page->dma = dma_map_page(&pdev->dev, |
|
694 ps_page->page, |
|
695 0, PAGE_SIZE, |
|
696 DMA_FROM_DEVICE); |
|
697 if (dma_mapping_error(&pdev->dev, |
|
698 ps_page->dma)) { |
|
699 dev_err(&adapter->pdev->dev, |
|
700 "Rx DMA page map failed\n"); |
|
701 adapter->rx_dma_failed++; |
|
702 goto no_buffers; |
|
703 } |
|
704 } |
|
705 /* |
|
706 * Refresh the desc even if buffer_addrs |
|
707 * didn't change because each write-back |
|
708 * erases this info. |
|
709 */ |
|
710 rx_desc->read.buffer_addr[j + 1] = |
|
711 cpu_to_le64(ps_page->dma); |
|
712 } |
|
713 |
|
714 skb = __netdev_alloc_skb_ip_align(netdev, |
|
715 adapter->rx_ps_bsize0, |
|
716 gfp); |
|
717 |
|
718 if (!skb) { |
|
719 adapter->alloc_rx_buff_failed++; |
|
720 break; |
|
721 } |
|
722 |
|
723 buffer_info->skb = skb; |
|
724 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
725 adapter->rx_ps_bsize0, |
|
726 DMA_FROM_DEVICE); |
|
727 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
728 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
729 adapter->rx_dma_failed++; |
|
730 /* cleanup skb */ |
|
731 dev_kfree_skb_any(skb); |
|
732 buffer_info->skb = NULL; |
|
733 break; |
|
734 } |
|
735 |
|
736 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
737 |
|
738 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
739 /* |
|
740 * Force memory writes to complete before letting h/w |
|
741 * know there are new descriptors to fetch. (Only |
|
742 * applicable for weak-ordered memory model archs, |
|
743 * such as IA-64). |
|
744 */ |
|
745 wmb(); |
|
746 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
747 e1000e_update_rdt_wa(rx_ring, i << 1); |
|
748 else |
|
749 writel(i << 1, rx_ring->tail); |
|
750 } |
|
751 |
|
752 i++; |
|
753 if (i == rx_ring->count) |
|
754 i = 0; |
|
755 buffer_info = &rx_ring->buffer_info[i]; |
|
756 } |
|
757 |
|
758 no_buffers: |
|
759 rx_ring->next_to_use = i; |
|
760 } |
|
761 |
|
762 /** |
|
763 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
764 * @rx_ring: Rx descriptor ring |
|
765 * @cleaned_count: number of buffers to allocate this pass |
|
766 **/ |
|
767 |
|
768 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring, |
|
769 int cleaned_count, gfp_t gfp) |
|
770 { |
|
771 struct e1000_adapter *adapter = rx_ring->adapter; |
|
772 struct net_device *netdev = adapter->netdev; |
|
773 struct pci_dev *pdev = adapter->pdev; |
|
774 union e1000_rx_desc_extended *rx_desc; |
|
775 struct e1000_buffer *buffer_info; |
|
776 struct sk_buff *skb; |
|
777 unsigned int i; |
|
778 unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
|
779 |
|
780 i = rx_ring->next_to_use; |
|
781 buffer_info = &rx_ring->buffer_info[i]; |
|
782 |
|
783 while (cleaned_count--) { |
|
784 skb = buffer_info->skb; |
|
785 if (skb) { |
|
786 skb_trim(skb, 0); |
|
787 goto check_page; |
|
788 } |
|
789 |
|
790 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
791 if (unlikely(!skb)) { |
|
792 /* Better luck next round */ |
|
793 adapter->alloc_rx_buff_failed++; |
|
794 break; |
|
795 } |
|
796 |
|
797 buffer_info->skb = skb; |
|
798 check_page: |
|
799 /* allocate a new page if necessary */ |
|
800 if (!buffer_info->page) { |
|
801 buffer_info->page = alloc_page(gfp); |
|
802 if (unlikely(!buffer_info->page)) { |
|
803 adapter->alloc_rx_buff_failed++; |
|
804 break; |
|
805 } |
|
806 } |
|
807 |
|
808 if (!buffer_info->dma) |
|
809 buffer_info->dma = dma_map_page(&pdev->dev, |
|
810 buffer_info->page, 0, |
|
811 PAGE_SIZE, |
|
812 DMA_FROM_DEVICE); |
|
813 |
|
814 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
815 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
816 |
|
817 if (unlikely(++i == rx_ring->count)) |
|
818 i = 0; |
|
819 buffer_info = &rx_ring->buffer_info[i]; |
|
820 } |
|
821 |
|
822 if (likely(rx_ring->next_to_use != i)) { |
|
823 rx_ring->next_to_use = i; |
|
824 if (unlikely(i-- == 0)) |
|
825 i = (rx_ring->count - 1); |
|
826 |
|
827 /* Force memory writes to complete before letting h/w |
|
828 * know there are new descriptors to fetch. (Only |
|
829 * applicable for weak-ordered memory model archs, |
|
830 * such as IA-64). */ |
|
831 wmb(); |
|
832 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
833 e1000e_update_rdt_wa(rx_ring, i); |
|
834 else |
|
835 writel(i, rx_ring->tail); |
|
836 } |
|
837 } |
|
838 |
|
839 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss, |
|
840 struct sk_buff *skb) |
|
841 { |
|
842 if (netdev->features & NETIF_F_RXHASH) |
|
843 skb->rxhash = le32_to_cpu(rss); |
|
844 } |
|
845 |
|
846 /** |
|
847 * e1000_clean_rx_irq - Send received data up the network stack |
|
848 * @rx_ring: Rx descriptor ring |
|
849 * |
|
850 * the return value indicates whether actual cleaning was done, there |
|
851 * is no guarantee that everything was cleaned |
|
852 **/ |
|
853 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
854 int work_to_do) |
|
855 { |
|
856 struct e1000_adapter *adapter = rx_ring->adapter; |
|
857 struct net_device *netdev = adapter->netdev; |
|
858 struct pci_dev *pdev = adapter->pdev; |
|
859 struct e1000_hw *hw = &adapter->hw; |
|
860 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
861 struct e1000_buffer *buffer_info, *next_buffer; |
|
862 u32 length, staterr; |
|
863 unsigned int i; |
|
864 int cleaned_count = 0; |
|
865 bool cleaned = false; |
|
866 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
867 |
|
868 i = rx_ring->next_to_clean; |
|
869 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
870 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
871 buffer_info = &rx_ring->buffer_info[i]; |
|
872 |
|
873 while (staterr & E1000_RXD_STAT_DD) { |
|
874 struct sk_buff *skb; |
|
875 |
|
876 if (*work_done >= work_to_do) |
|
877 break; |
|
878 (*work_done)++; |
|
879 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
880 |
|
881 skb = buffer_info->skb; |
|
882 |
|
883 if (!adapter->ecdev) |
|
884 buffer_info->skb = NULL; |
|
885 |
|
886 prefetch(skb->data - NET_IP_ALIGN); |
|
887 |
|
888 i++; |
|
889 if (i == rx_ring->count) |
|
890 i = 0; |
|
891 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
892 prefetch(next_rxd); |
|
893 |
|
894 next_buffer = &rx_ring->buffer_info[i]; |
|
895 |
|
896 cleaned = true; |
|
897 cleaned_count++; |
|
898 dma_unmap_single(&pdev->dev, |
|
899 buffer_info->dma, |
|
900 adapter->rx_buffer_len, |
|
901 DMA_FROM_DEVICE); |
|
902 buffer_info->dma = 0; |
|
903 |
|
904 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
905 |
|
906 /* |
|
907 * !EOP means multiple descriptors were used to store a single |
|
908 * packet, if that's the case we need to toss it. In fact, we |
|
909 * need to toss every packet with the EOP bit clear and the |
|
910 * next frame that _does_ have the EOP bit set, as it is by |
|
911 * definition only a frame fragment |
|
912 */ |
|
913 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
|
914 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
915 |
|
916 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
917 /* All receives must fit into a single buffer */ |
|
918 e_dbg("Receive packet consumed multiple buffers\n"); |
|
919 /* recycle */ |
|
920 buffer_info->skb = skb; |
|
921 if (staterr & E1000_RXD_STAT_EOP) |
|
922 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
923 goto next_desc; |
|
924 } |
|
925 |
|
926 if (unlikely(!adapter->ecdev && |
|
927 (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
928 !(netdev->features & NETIF_F_RXALL))) { |
|
929 /* recycle */ |
|
930 buffer_info->skb = skb; |
|
931 goto next_desc; |
|
932 } |
|
933 |
|
934 /* adjust length to remove Ethernet CRC */ |
|
935 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
936 /* If configured to store CRC, don't subtract FCS, |
|
937 * but keep the FCS bytes out of the total_rx_bytes |
|
938 * counter |
|
939 */ |
|
940 if (netdev->features & NETIF_F_RXFCS) |
|
941 total_rx_bytes -= 4; |
|
942 else |
|
943 length -= 4; |
|
944 } |
|
945 |
|
946 total_rx_bytes += length; |
|
947 total_rx_packets++; |
|
948 |
|
949 /* |
|
950 * code added for copybreak, this should improve |
|
951 * performance for small packets with large amounts |
|
952 * of reassembly being done in the stack |
|
953 */ |
|
954 if (!adapter->ecdev && length < copybreak) { |
|
955 struct sk_buff *new_skb = |
|
956 netdev_alloc_skb_ip_align(netdev, length); |
|
957 if (new_skb) { |
|
958 skb_copy_to_linear_data_offset(new_skb, |
|
959 -NET_IP_ALIGN, |
|
960 (skb->data - |
|
961 NET_IP_ALIGN), |
|
962 (length + |
|
963 NET_IP_ALIGN)); |
|
964 /* save the skb in buffer_info as good */ |
|
965 buffer_info->skb = skb; |
|
966 skb = new_skb; |
|
967 } |
|
968 /* else just continue with the old one */ |
|
969 } |
|
970 /* end copybreak code */ |
|
971 skb_put(skb, length); |
|
972 |
|
973 /* Receive Checksum Offload */ |
|
974 e1000_rx_checksum(adapter, staterr, skb); |
|
975 |
|
976 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
977 |
|
978 if (adapter->ecdev) { |
|
979 ecdev_receive(adapter->ecdev, skb->data, length); |
|
980 adapter->ec_watchdog_jiffies = jiffies; |
|
981 } else { |
|
982 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
983 rx_desc->wb.upper.vlan); |
|
984 } |
|
985 |
|
986 next_desc: |
|
987 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
988 |
|
989 /* return some buffers to hardware, one at a time is too slow */ |
|
990 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
991 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
992 GFP_ATOMIC); |
|
993 cleaned_count = 0; |
|
994 } |
|
995 |
|
996 /* use prefetched values */ |
|
997 rx_desc = next_rxd; |
|
998 buffer_info = next_buffer; |
|
999 |
|
1000 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1001 } |
|
1002 rx_ring->next_to_clean = i; |
|
1003 |
|
1004 cleaned_count = e1000_desc_unused(rx_ring); |
|
1005 if (cleaned_count) |
|
1006 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1007 |
|
1008 adapter->total_rx_bytes += total_rx_bytes; |
|
1009 adapter->total_rx_packets += total_rx_packets; |
|
1010 return cleaned; |
|
1011 } |
|
1012 |
|
1013 static void e1000_put_txbuf(struct e1000_ring *tx_ring, |
|
1014 struct e1000_buffer *buffer_info) |
|
1015 { |
|
1016 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1017 |
|
1018 if (adapter->ecdev) { |
|
1019 return; |
|
1020 } |
|
1021 |
|
1022 if (buffer_info->dma) { |
|
1023 if (buffer_info->mapped_as_page) |
|
1024 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1025 buffer_info->length, DMA_TO_DEVICE); |
|
1026 else |
|
1027 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1028 buffer_info->length, DMA_TO_DEVICE); |
|
1029 buffer_info->dma = 0; |
|
1030 } |
|
1031 if (buffer_info->skb) { |
|
1032 dev_kfree_skb_any(buffer_info->skb); |
|
1033 buffer_info->skb = NULL; |
|
1034 } |
|
1035 buffer_info->time_stamp = 0; |
|
1036 } |
|
1037 |
|
1038 static void e1000_print_hw_hang(struct work_struct *work) |
|
1039 { |
|
1040 struct e1000_adapter *adapter = container_of(work, |
|
1041 struct e1000_adapter, |
|
1042 print_hang_task); |
|
1043 struct net_device *netdev = adapter->netdev; |
|
1044 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1045 unsigned int i = tx_ring->next_to_clean; |
|
1046 unsigned int eop = tx_ring->buffer_info[i].next_to_watch; |
|
1047 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1048 struct e1000_hw *hw = &adapter->hw; |
|
1049 u16 phy_status, phy_1000t_status, phy_ext_status; |
|
1050 u16 pci_status; |
|
1051 |
|
1052 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1053 return; |
|
1054 |
|
1055 if (!adapter->tx_hang_recheck && |
|
1056 (adapter->flags2 & FLAG2_DMA_BURST)) { |
|
1057 /* May be block on write-back, flush and detect again |
|
1058 * flush pending descriptor writebacks to memory |
|
1059 */ |
|
1060 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1061 /* execute the writes immediately */ |
|
1062 e1e_flush(); |
|
1063 /* |
|
1064 * Due to rare timing issues, write to TIDV again to ensure |
|
1065 * the write is successful |
|
1066 */ |
|
1067 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1068 /* execute the writes immediately */ |
|
1069 e1e_flush(); |
|
1070 adapter->tx_hang_recheck = true; |
|
1071 return; |
|
1072 } |
|
1073 /* Real hang detected */ |
|
1074 adapter->tx_hang_recheck = false; |
|
1075 if (!adapter->ecdev) { |
|
1076 netif_stop_queue(netdev); |
|
1077 } |
|
1078 |
|
1079 e1e_rphy(hw, PHY_STATUS, &phy_status); |
|
1080 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); |
|
1081 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); |
|
1082 |
|
1083 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
|
1084 |
|
1085 /* detected Hardware unit hang */ |
|
1086 e_err("Detected Hardware Unit Hang:\n" |
|
1087 " TDH <%x>\n" |
|
1088 " TDT <%x>\n" |
|
1089 " next_to_use <%x>\n" |
|
1090 " next_to_clean <%x>\n" |
|
1091 "buffer_info[next_to_clean]:\n" |
|
1092 " time_stamp <%lx>\n" |
|
1093 " next_to_watch <%x>\n" |
|
1094 " jiffies <%lx>\n" |
|
1095 " next_to_watch.status <%x>\n" |
|
1096 "MAC Status <%x>\n" |
|
1097 "PHY Status <%x>\n" |
|
1098 "PHY 1000BASE-T Status <%x>\n" |
|
1099 "PHY Extended Status <%x>\n" |
|
1100 "PCI Status <%x>\n", |
|
1101 readl(tx_ring->head), |
|
1102 readl(tx_ring->tail), |
|
1103 tx_ring->next_to_use, |
|
1104 tx_ring->next_to_clean, |
|
1105 tx_ring->buffer_info[eop].time_stamp, |
|
1106 eop, |
|
1107 jiffies, |
|
1108 eop_desc->upper.fields.status, |
|
1109 er32(STATUS), |
|
1110 phy_status, |
|
1111 phy_1000t_status, |
|
1112 phy_ext_status, |
|
1113 pci_status); |
|
1114 } |
|
1115 |
|
1116 /** |
|
1117 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
1118 * @tx_ring: Tx descriptor ring |
|
1119 * |
|
1120 * the return value indicates whether actual cleaning was done, there |
|
1121 * is no guarantee that everything was cleaned |
|
1122 **/ |
|
1123 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) |
|
1124 { |
|
1125 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1126 struct net_device *netdev = adapter->netdev; |
|
1127 struct e1000_hw *hw = &adapter->hw; |
|
1128 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
1129 struct e1000_buffer *buffer_info; |
|
1130 unsigned int i, eop; |
|
1131 unsigned int count = 0; |
|
1132 unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
|
1133 unsigned int bytes_compl = 0, pkts_compl = 0; |
|
1134 |
|
1135 i = tx_ring->next_to_clean; |
|
1136 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1137 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1138 |
|
1139 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
1140 (count < tx_ring->count)) { |
|
1141 bool cleaned = false; |
|
1142 rmb(); /* read buffer_info after eop_desc */ |
|
1143 for (; !cleaned; count++) { |
|
1144 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
1145 buffer_info = &tx_ring->buffer_info[i]; |
|
1146 cleaned = (i == eop); |
|
1147 |
|
1148 if (cleaned) { |
|
1149 total_tx_packets += buffer_info->segs; |
|
1150 total_tx_bytes += buffer_info->bytecount; |
|
1151 if (buffer_info->skb) { |
|
1152 bytes_compl += buffer_info->skb->len; |
|
1153 pkts_compl++; |
|
1154 } |
|
1155 } |
|
1156 |
|
1157 e1000_put_txbuf(tx_ring, buffer_info); |
|
1158 tx_desc->upper.data = 0; |
|
1159 |
|
1160 i++; |
|
1161 if (i == tx_ring->count) |
|
1162 i = 0; |
|
1163 } |
|
1164 |
|
1165 if (i == tx_ring->next_to_use) |
|
1166 break; |
|
1167 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1168 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1169 } |
|
1170 |
|
1171 tx_ring->next_to_clean = i; |
|
1172 |
|
1173 netdev_completed_queue(netdev, pkts_compl, bytes_compl); |
|
1174 |
|
1175 #define TX_WAKE_THRESHOLD 32 |
|
1176 if (!adapter->ecdev && count && netif_carrier_ok(netdev) && |
|
1177 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { |
|
1178 /* Make sure that anybody stopping the queue after this |
|
1179 * sees the new next_to_clean. |
|
1180 */ |
|
1181 smp_mb(); |
|
1182 |
|
1183 if (netif_queue_stopped(netdev) && |
|
1184 !(test_bit(__E1000_DOWN, &adapter->state))) { |
|
1185 netif_wake_queue(netdev); |
|
1186 ++adapter->restart_queue; |
|
1187 } |
|
1188 } |
|
1189 |
|
1190 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
1191 /* |
|
1192 * Detect a transmit hang in hardware, this serializes the |
|
1193 * check with the clearing of time_stamp and movement of i |
|
1194 */ |
|
1195 adapter->detect_tx_hung = false; |
|
1196 if (tx_ring->buffer_info[i].time_stamp && |
|
1197 time_after(jiffies, tx_ring->buffer_info[i].time_stamp |
|
1198 + (adapter->tx_timeout_factor * HZ)) && |
|
1199 !(er32(STATUS) & E1000_STATUS_TXOFF)) |
|
1200 schedule_work(&adapter->print_hang_task); |
|
1201 else |
|
1202 adapter->tx_hang_recheck = false; |
|
1203 } |
|
1204 adapter->total_tx_bytes += total_tx_bytes; |
|
1205 adapter->total_tx_packets += total_tx_packets; |
|
1206 return count < tx_ring->count; |
|
1207 } |
|
1208 |
|
1209 /** |
|
1210 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
1211 * @rx_ring: Rx descriptor ring |
|
1212 * |
|
1213 * the return value indicates whether actual cleaning was done, there |
|
1214 * is no guarantee that everything was cleaned |
|
1215 **/ |
|
1216 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, |
|
1217 int work_to_do) |
|
1218 { |
|
1219 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1220 struct e1000_hw *hw = &adapter->hw; |
|
1221 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
1222 struct net_device *netdev = adapter->netdev; |
|
1223 struct pci_dev *pdev = adapter->pdev; |
|
1224 struct e1000_buffer *buffer_info, *next_buffer; |
|
1225 struct e1000_ps_page *ps_page; |
|
1226 struct sk_buff *skb; |
|
1227 unsigned int i, j; |
|
1228 u32 length, staterr; |
|
1229 int cleaned_count = 0; |
|
1230 bool cleaned = false; |
|
1231 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1232 |
|
1233 i = rx_ring->next_to_clean; |
|
1234 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
1235 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1236 buffer_info = &rx_ring->buffer_info[i]; |
|
1237 |
|
1238 while (staterr & E1000_RXD_STAT_DD) { |
|
1239 if (*work_done >= work_to_do) |
|
1240 break; |
|
1241 (*work_done)++; |
|
1242 skb = buffer_info->skb; |
|
1243 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1244 |
|
1245 /* in the packet split case this is header only */ |
|
1246 prefetch(skb->data - NET_IP_ALIGN); |
|
1247 |
|
1248 i++; |
|
1249 if (i == rx_ring->count) |
|
1250 i = 0; |
|
1251 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
1252 prefetch(next_rxd); |
|
1253 |
|
1254 next_buffer = &rx_ring->buffer_info[i]; |
|
1255 |
|
1256 cleaned = true; |
|
1257 cleaned_count++; |
|
1258 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1259 adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
|
1260 buffer_info->dma = 0; |
|
1261 |
|
1262 /* see !EOP comment in other Rx routine */ |
|
1263 if (!(staterr & E1000_RXD_STAT_EOP)) |
|
1264 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
1265 |
|
1266 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
1267 e_dbg("Packet Split buffers didn't pick up the full packet\n"); |
|
1268 if (!adapter->ecdev) { |
|
1269 dev_kfree_skb_irq(skb); |
|
1270 } |
|
1271 if (staterr & E1000_RXD_STAT_EOP) |
|
1272 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1273 goto next_desc; |
|
1274 } |
|
1275 |
|
1276 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1277 !(netdev->features & NETIF_F_RXALL))) { |
|
1278 if (!adapter->ecdev) { |
|
1279 dev_kfree_skb_irq(skb); |
|
1280 } |
|
1281 goto next_desc; |
|
1282 } |
|
1283 |
|
1284 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
1285 |
|
1286 if (!length) { |
|
1287 e_dbg("Last part of the packet spanning multiple descriptors\n"); |
|
1288 if (!adapter->ecdev) { |
|
1289 dev_kfree_skb_irq(skb); |
|
1290 } |
|
1291 goto next_desc; |
|
1292 } |
|
1293 |
|
1294 /* Good Receive */ |
|
1295 skb_put(skb, length); |
|
1296 |
|
1297 { |
|
1298 /* |
|
1299 * this looks ugly, but it seems compiler issues make |
|
1300 * it more efficient than reusing j |
|
1301 */ |
|
1302 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
1303 |
|
1304 /* |
|
1305 * page alloc/put takes too long and effects small |
|
1306 * packet throughput, so unsplit small packets and |
|
1307 * save the alloc/put only valid in softirq (napi) |
|
1308 * context to call kmap_* |
|
1309 */ |
|
1310 if (l1 && (l1 <= copybreak) && |
|
1311 ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
1312 u8 *vaddr; |
|
1313 |
|
1314 ps_page = &buffer_info->ps_pages[0]; |
|
1315 |
|
1316 /* |
|
1317 * there is no documentation about how to call |
|
1318 * kmap_atomic, so we can't hold the mapping |
|
1319 * very long |
|
1320 */ |
|
1321 dma_sync_single_for_cpu(&pdev->dev, |
|
1322 ps_page->dma, |
|
1323 PAGE_SIZE, |
|
1324 DMA_FROM_DEVICE); |
|
1325 vaddr = kmap_atomic(ps_page->page); |
|
1326 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
1327 kunmap_atomic(vaddr); |
|
1328 dma_sync_single_for_device(&pdev->dev, |
|
1329 ps_page->dma, |
|
1330 PAGE_SIZE, |
|
1331 DMA_FROM_DEVICE); |
|
1332 |
|
1333 /* remove the CRC */ |
|
1334 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1335 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1336 l1 -= 4; |
|
1337 } |
|
1338 |
|
1339 skb_put(skb, l1); |
|
1340 goto copydone; |
|
1341 } /* if */ |
|
1342 } |
|
1343 |
|
1344 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1345 length = le16_to_cpu(rx_desc->wb.upper.length[j]); |
|
1346 if (!length) |
|
1347 break; |
|
1348 |
|
1349 ps_page = &buffer_info->ps_pages[j]; |
|
1350 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1351 DMA_FROM_DEVICE); |
|
1352 ps_page->dma = 0; |
|
1353 skb_fill_page_desc(skb, j, ps_page->page, 0, length); |
|
1354 ps_page->page = NULL; |
|
1355 skb->len += length; |
|
1356 skb->data_len += length; |
|
1357 skb->truesize += PAGE_SIZE; |
|
1358 } |
|
1359 |
|
1360 /* strip the ethernet crc, problem is we're using pages now so |
|
1361 * this whole operation can get a little cpu intensive |
|
1362 */ |
|
1363 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1364 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1365 pskb_trim(skb, skb->len - 4); |
|
1366 } |
|
1367 |
|
1368 copydone: |
|
1369 total_rx_bytes += skb->len; |
|
1370 total_rx_packets++; |
|
1371 |
|
1372 e1000_rx_checksum(adapter, staterr, skb); |
|
1373 |
|
1374 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1375 |
|
1376 if (rx_desc->wb.upper.header_status & |
|
1377 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
|
1378 adapter->rx_hdr_split++; |
|
1379 |
|
1380 if (adapter->ecdev) { |
|
1381 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1382 adapter->ec_watchdog_jiffies = jiffies; |
|
1383 } else { |
|
1384 e1000_receive_skb(adapter, netdev, skb, |
|
1385 staterr, rx_desc->wb.middle.vlan); |
|
1386 } |
|
1387 |
|
1388 next_desc: |
|
1389 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
1390 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
1391 |
|
1392 /* return some buffers to hardware, one at a time is too slow */ |
|
1393 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1394 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1395 GFP_ATOMIC); |
|
1396 cleaned_count = 0; |
|
1397 } |
|
1398 |
|
1399 /* use prefetched values */ |
|
1400 rx_desc = next_rxd; |
|
1401 buffer_info = next_buffer; |
|
1402 |
|
1403 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1404 } |
|
1405 rx_ring->next_to_clean = i; |
|
1406 |
|
1407 cleaned_count = e1000_desc_unused(rx_ring); |
|
1408 if (cleaned_count) |
|
1409 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1410 |
|
1411 adapter->total_rx_bytes += total_rx_bytes; |
|
1412 adapter->total_rx_packets += total_rx_packets; |
|
1413 return cleaned; |
|
1414 } |
|
1415 |
|
1416 /** |
|
1417 * e1000_consume_page - helper function |
|
1418 **/ |
|
1419 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
1420 u16 length) |
|
1421 { |
|
1422 bi->page = NULL; |
|
1423 skb->len += length; |
|
1424 skb->data_len += length; |
|
1425 skb->truesize += PAGE_SIZE; |
|
1426 } |
|
1427 |
|
1428 /** |
|
1429 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
1430 * @adapter: board private structure |
|
1431 * |
|
1432 * the return value indicates whether actual cleaning was done, there |
|
1433 * is no guarantee that everything was cleaned |
|
1434 **/ |
|
1435 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
1436 int work_to_do) |
|
1437 { |
|
1438 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1439 struct net_device *netdev = adapter->netdev; |
|
1440 struct pci_dev *pdev = adapter->pdev; |
|
1441 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
1442 struct e1000_buffer *buffer_info, *next_buffer; |
|
1443 u32 length, staterr; |
|
1444 unsigned int i; |
|
1445 int cleaned_count = 0; |
|
1446 bool cleaned = false; |
|
1447 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
1448 |
|
1449 i = rx_ring->next_to_clean; |
|
1450 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1451 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1452 buffer_info = &rx_ring->buffer_info[i]; |
|
1453 |
|
1454 while (staterr & E1000_RXD_STAT_DD) { |
|
1455 struct sk_buff *skb; |
|
1456 |
|
1457 if (*work_done >= work_to_do) |
|
1458 break; |
|
1459 (*work_done)++; |
|
1460 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1461 |
|
1462 skb = buffer_info->skb; |
|
1463 |
|
1464 if (!adapter->ecdev) |
|
1465 buffer_info->skb = NULL; |
|
1466 |
|
1467 ++i; |
|
1468 if (i == rx_ring->count) |
|
1469 i = 0; |
|
1470 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1471 prefetch(next_rxd); |
|
1472 |
|
1473 next_buffer = &rx_ring->buffer_info[i]; |
|
1474 |
|
1475 cleaned = true; |
|
1476 cleaned_count++; |
|
1477 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
|
1478 DMA_FROM_DEVICE); |
|
1479 buffer_info->dma = 0; |
|
1480 |
|
1481 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
1482 |
|
1483 /* errors is only valid for DD + EOP descriptors */ |
|
1484 if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
|
1485 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1486 !(netdev->features & NETIF_F_RXALL)))) { |
|
1487 /* recycle both page and skb */ |
|
1488 buffer_info->skb = skb; |
|
1489 /* an error means any chain goes out the window too */ |
|
1490 if (!adapter->ecdev && rx_ring->rx_skb_top) { |
|
1491 dev_kfree_skb_irq(rx_ring->rx_skb_top); |
|
1492 } |
|
1493 rx_ring->rx_skb_top = NULL; |
|
1494 goto next_desc; |
|
1495 } |
|
1496 |
|
1497 #define rxtop (rx_ring->rx_skb_top) |
|
1498 if (!(staterr & E1000_RXD_STAT_EOP)) { |
|
1499 /* this descriptor is only the beginning (or middle) */ |
|
1500 if (!rxtop) { |
|
1501 /* this is the beginning of a chain */ |
|
1502 rxtop = skb; |
|
1503 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
1504 0, length); |
|
1505 } else { |
|
1506 /* this is the middle of a chain */ |
|
1507 skb_fill_page_desc(rxtop, |
|
1508 skb_shinfo(rxtop)->nr_frags, |
|
1509 buffer_info->page, 0, length); |
|
1510 /* re-use the skb, only consumed the page */ |
|
1511 buffer_info->skb = skb; |
|
1512 } |
|
1513 e1000_consume_page(buffer_info, rxtop, length); |
|
1514 goto next_desc; |
|
1515 } else { |
|
1516 if (rxtop) { |
|
1517 /* end of the chain */ |
|
1518 skb_fill_page_desc(rxtop, |
|
1519 skb_shinfo(rxtop)->nr_frags, |
|
1520 buffer_info->page, 0, length); |
|
1521 /* re-use the current skb, we only consumed the |
|
1522 * page */ |
|
1523 buffer_info->skb = skb; |
|
1524 skb = rxtop; |
|
1525 rxtop = NULL; |
|
1526 e1000_consume_page(buffer_info, skb, length); |
|
1527 } else { |
|
1528 /* no chain, got EOP, this buf is the packet |
|
1529 * copybreak to save the put_page/alloc_page */ |
|
1530 if (length <= copybreak && |
|
1531 skb_tailroom(skb) >= length) { |
|
1532 u8 *vaddr; |
|
1533 vaddr = kmap_atomic(buffer_info->page); |
|
1534 memcpy(skb_tail_pointer(skb), vaddr, |
|
1535 length); |
|
1536 kunmap_atomic(vaddr); |
|
1537 /* re-use the page, so don't erase |
|
1538 * buffer_info->page */ |
|
1539 skb_put(skb, length); |
|
1540 } else { |
|
1541 skb_fill_page_desc(skb, 0, |
|
1542 buffer_info->page, 0, |
|
1543 length); |
|
1544 e1000_consume_page(buffer_info, skb, |
|
1545 length); |
|
1546 } |
|
1547 } |
|
1548 } |
|
1549 |
|
1550 /* Receive Checksum Offload */ |
|
1551 e1000_rx_checksum(adapter, staterr, skb); |
|
1552 |
|
1553 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1554 |
|
1555 /* probably a little skewed due to removing CRC */ |
|
1556 total_rx_bytes += skb->len; |
|
1557 total_rx_packets++; |
|
1558 |
|
1559 /* eth type trans needs skb->data to point to something */ |
|
1560 if (!adapter->ecdev && !pskb_may_pull(skb, ETH_HLEN)) { |
|
1561 e_err("pskb_may_pull failed.\n"); |
|
1562 dev_kfree_skb_irq(skb); |
|
1563 goto next_desc; |
|
1564 } |
|
1565 |
|
1566 if (adapter->ecdev) { |
|
1567 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1568 adapter->ec_watchdog_jiffies = jiffies; |
|
1569 } else { |
|
1570 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1571 rx_desc->wb.upper.vlan); |
|
1572 } |
|
1573 |
|
1574 |
|
1575 next_desc: |
|
1576 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1577 |
|
1578 /* return some buffers to hardware, one at a time is too slow */ |
|
1579 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
1580 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1581 GFP_ATOMIC); |
|
1582 cleaned_count = 0; |
|
1583 } |
|
1584 |
|
1585 /* use prefetched values */ |
|
1586 rx_desc = next_rxd; |
|
1587 buffer_info = next_buffer; |
|
1588 |
|
1589 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1590 } |
|
1591 rx_ring->next_to_clean = i; |
|
1592 |
|
1593 cleaned_count = e1000_desc_unused(rx_ring); |
|
1594 if (cleaned_count) |
|
1595 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1596 |
|
1597 adapter->total_rx_bytes += total_rx_bytes; |
|
1598 adapter->total_rx_packets += total_rx_packets; |
|
1599 return cleaned; |
|
1600 } |
|
1601 |
|
1602 /** |
|
1603 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1604 * @rx_ring: Rx descriptor ring |
|
1605 **/ |
|
1606 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring) |
|
1607 { |
|
1608 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1609 struct e1000_buffer *buffer_info; |
|
1610 struct e1000_ps_page *ps_page; |
|
1611 struct pci_dev *pdev = adapter->pdev; |
|
1612 unsigned int i, j; |
|
1613 |
|
1614 /* Free all the Rx ring sk_buffs */ |
|
1615 for (i = 0; i < rx_ring->count; i++) { |
|
1616 buffer_info = &rx_ring->buffer_info[i]; |
|
1617 if (buffer_info->dma) { |
|
1618 if (adapter->clean_rx == e1000_clean_rx_irq) |
|
1619 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1620 adapter->rx_buffer_len, |
|
1621 DMA_FROM_DEVICE); |
|
1622 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
|
1623 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
1624 PAGE_SIZE, |
|
1625 DMA_FROM_DEVICE); |
|
1626 else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
|
1627 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1628 adapter->rx_ps_bsize0, |
|
1629 DMA_FROM_DEVICE); |
|
1630 buffer_info->dma = 0; |
|
1631 } |
|
1632 |
|
1633 if (buffer_info->page) { |
|
1634 put_page(buffer_info->page); |
|
1635 buffer_info->page = NULL; |
|
1636 } |
|
1637 |
|
1638 if (buffer_info->skb) { |
|
1639 dev_kfree_skb(buffer_info->skb); |
|
1640 buffer_info->skb = NULL; |
|
1641 } |
|
1642 |
|
1643 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1644 ps_page = &buffer_info->ps_pages[j]; |
|
1645 if (!ps_page->page) |
|
1646 break; |
|
1647 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1648 DMA_FROM_DEVICE); |
|
1649 ps_page->dma = 0; |
|
1650 put_page(ps_page->page); |
|
1651 ps_page->page = NULL; |
|
1652 } |
|
1653 } |
|
1654 |
|
1655 /* there also may be some cached data from a chained receive */ |
|
1656 if (rx_ring->rx_skb_top) { |
|
1657 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1658 rx_ring->rx_skb_top = NULL; |
|
1659 } |
|
1660 |
|
1661 /* Zero out the descriptor ring */ |
|
1662 memset(rx_ring->desc, 0, rx_ring->size); |
|
1663 |
|
1664 rx_ring->next_to_clean = 0; |
|
1665 rx_ring->next_to_use = 0; |
|
1666 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1667 |
|
1668 writel(0, rx_ring->head); |
|
1669 writel(0, rx_ring->tail); |
|
1670 } |
|
1671 |
|
1672 static void e1000e_downshift_workaround(struct work_struct *work) |
|
1673 { |
|
1674 struct e1000_adapter *adapter = container_of(work, |
|
1675 struct e1000_adapter, downshift_task); |
|
1676 |
|
1677 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1678 return; |
|
1679 |
|
1680 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
|
1681 } |
|
1682 |
|
1683 /** |
|
1684 * e1000_intr_msi - Interrupt Handler |
|
1685 * @irq: interrupt number |
|
1686 * @data: pointer to a network interface device structure |
|
1687 **/ |
|
1688 static irqreturn_t e1000_intr_msi(int irq, void *data) |
|
1689 { |
|
1690 struct net_device *netdev = data; |
|
1691 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1692 struct e1000_hw *hw = &adapter->hw; |
|
1693 u32 icr = er32(ICR); |
|
1694 |
|
1695 if (adapter->ecdev) { |
|
1696 int ec_work_done = 0; |
|
1697 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1698 e1000_clean_tx_irq(adapter->tx_ring); |
|
1699 return IRQ_HANDLED; |
|
1700 } |
|
1701 /* |
|
1702 * read ICR disables interrupts using IAM |
|
1703 */ |
|
1704 |
|
1705 if (!adapter->ecdev && icr & E1000_ICR_LSC) { |
|
1706 hw->mac.get_link_status = true; |
|
1707 /* |
|
1708 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1709 * disconnect (LSC) before accessing any PHY registers |
|
1710 */ |
|
1711 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1712 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1713 schedule_work(&adapter->downshift_task); |
|
1714 |
|
1715 /* |
|
1716 * 80003ES2LAN workaround-- For packet buffer work-around on |
|
1717 * link down event; disable receives here in the ISR and reset |
|
1718 * adapter in watchdog |
|
1719 */ |
|
1720 if (netif_carrier_ok(netdev) && |
|
1721 adapter->flags & FLAG_RX_NEEDS_RESTART) { |
|
1722 /* disable receives */ |
|
1723 u32 rctl = er32(RCTL); |
|
1724 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1725 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1726 } |
|
1727 /* guard against interrupt when we're going down */ |
|
1728 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1729 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1730 } |
|
1731 |
|
1732 if (napi_schedule_prep(&adapter->napi)) { |
|
1733 adapter->total_tx_bytes = 0; |
|
1734 adapter->total_tx_packets = 0; |
|
1735 adapter->total_rx_bytes = 0; |
|
1736 adapter->total_rx_packets = 0; |
|
1737 __napi_schedule(&adapter->napi); |
|
1738 } |
|
1739 |
|
1740 return IRQ_HANDLED; |
|
1741 } |
|
1742 |
|
1743 /** |
|
1744 * e1000_intr - Interrupt Handler |
|
1745 * @irq: interrupt number |
|
1746 * @data: pointer to a network interface device structure |
|
1747 **/ |
|
1748 static irqreturn_t e1000_intr(int irq, void *data) |
|
1749 { |
|
1750 struct net_device *netdev = data; |
|
1751 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1752 struct e1000_hw *hw = &adapter->hw; |
|
1753 u32 rctl, icr = er32(ICR); |
|
1754 |
|
1755 if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
|
1756 return IRQ_NONE; /* Not our interrupt */ |
|
1757 |
|
1758 /* |
|
1759 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
1760 * not set, then the adapter didn't send an interrupt |
|
1761 */ |
|
1762 if (!adapter->ecdev && !(icr & E1000_ICR_INT_ASSERTED)) |
|
1763 return IRQ_NONE; |
|
1764 |
|
1765 /* |
|
1766 * Interrupt Auto-Mask...upon reading ICR, |
|
1767 * interrupts are masked. No need for the |
|
1768 * IMC write |
|
1769 */ |
|
1770 |
|
1771 if (icr & E1000_ICR_LSC) { |
|
1772 hw->mac.get_link_status = true; |
|
1773 /* |
|
1774 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1775 * disconnect (LSC) before accessing any PHY registers |
|
1776 */ |
|
1777 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1778 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1779 schedule_work(&adapter->downshift_task); |
|
1780 |
|
1781 /* |
|
1782 * 80003ES2LAN workaround-- |
|
1783 * For packet buffer work-around on link down event; |
|
1784 * disable receives here in the ISR and |
|
1785 * reset adapter in watchdog |
|
1786 */ |
|
1787 if (netif_carrier_ok(netdev) && |
|
1788 (adapter->flags & FLAG_RX_NEEDS_RESTART)) { |
|
1789 /* disable receives */ |
|
1790 rctl = er32(RCTL); |
|
1791 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1792 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1793 } |
|
1794 /* guard against interrupt when we're going down */ |
|
1795 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1796 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1797 } |
|
1798 |
|
1799 if (adapter->ecdev) { |
|
1800 int ec_work_done = 0; |
|
1801 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1802 e1000_clean_tx_irq(adapter->tx_ring); |
|
1803 return IRQ_HANDLED; |
|
1804 } |
|
1805 |
|
1806 if (napi_schedule_prep(&adapter->napi)) { |
|
1807 adapter->total_tx_bytes = 0; |
|
1808 adapter->total_tx_packets = 0; |
|
1809 adapter->total_rx_bytes = 0; |
|
1810 adapter->total_rx_packets = 0; |
|
1811 __napi_schedule(&adapter->napi); |
|
1812 } |
|
1813 |
|
1814 return IRQ_HANDLED; |
|
1815 } |
|
1816 |
|
1817 static irqreturn_t e1000_msix_other(int irq, void *data) |
|
1818 { |
|
1819 struct net_device *netdev = data; |
|
1820 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1821 struct e1000_hw *hw = &adapter->hw; |
|
1822 u32 icr = er32(ICR); |
|
1823 |
|
1824 if (!(icr & E1000_ICR_INT_ASSERTED)) { |
|
1825 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1826 ew32(IMS, E1000_IMS_OTHER); |
|
1827 return IRQ_NONE; |
|
1828 } |
|
1829 |
|
1830 if (icr & adapter->eiac_mask) |
|
1831 ew32(ICS, (icr & adapter->eiac_mask)); |
|
1832 |
|
1833 if (icr & E1000_ICR_OTHER) { |
|
1834 if (!(icr & E1000_ICR_LSC)) |
|
1835 goto no_link_interrupt; |
|
1836 hw->mac.get_link_status = true; |
|
1837 /* guard against interrupt when we're going down */ |
|
1838 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
1839 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1840 } |
|
1841 |
|
1842 no_link_interrupt: |
|
1843 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1844 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); |
|
1845 |
|
1846 return IRQ_HANDLED; |
|
1847 } |
|
1848 |
|
1849 |
|
1850 static irqreturn_t e1000_intr_msix_tx(int irq, void *data) |
|
1851 { |
|
1852 struct net_device *netdev = data; |
|
1853 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1854 struct e1000_hw *hw = &adapter->hw; |
|
1855 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1856 |
|
1857 |
|
1858 adapter->total_tx_bytes = 0; |
|
1859 adapter->total_tx_packets = 0; |
|
1860 |
|
1861 if (!e1000_clean_tx_irq(tx_ring)) |
|
1862 /* Ring was not completely cleaned, so fire another interrupt */ |
|
1863 ew32(ICS, tx_ring->ims_val); |
|
1864 |
|
1865 return IRQ_HANDLED; |
|
1866 } |
|
1867 |
|
1868 static irqreturn_t e1000_intr_msix_rx(int irq, void *data) |
|
1869 { |
|
1870 struct net_device *netdev = data; |
|
1871 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1872 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1873 |
|
1874 /* Write the ITR value calculated at the end of the |
|
1875 * previous interrupt. |
|
1876 */ |
|
1877 if (rx_ring->set_itr) { |
|
1878 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1879 rx_ring->itr_register); |
|
1880 rx_ring->set_itr = 0; |
|
1881 } |
|
1882 |
|
1883 if (adapter->ecdev) { |
|
1884 int ec_work_done = 0; |
|
1885 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1886 } else { |
|
1887 if (napi_schedule_prep(&adapter->napi)) { |
|
1888 adapter->total_rx_bytes = 0; |
|
1889 adapter->total_rx_packets = 0; |
|
1890 __napi_schedule(&adapter->napi); |
|
1891 } |
|
1892 } |
|
1893 return IRQ_HANDLED; |
|
1894 } |
|
1895 |
|
1896 /** |
|
1897 * e1000_configure_msix - Configure MSI-X hardware |
|
1898 * |
|
1899 * e1000_configure_msix sets up the hardware to properly |
|
1900 * generate MSI-X interrupts. |
|
1901 **/ |
|
1902 static void e1000_configure_msix(struct e1000_adapter *adapter) |
|
1903 { |
|
1904 struct e1000_hw *hw = &adapter->hw; |
|
1905 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1906 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1907 int vector = 0; |
|
1908 u32 ctrl_ext, ivar = 0; |
|
1909 |
|
1910 adapter->eiac_mask = 0; |
|
1911 |
|
1912 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ |
|
1913 if (hw->mac.type == e1000_82574) { |
|
1914 u32 rfctl = er32(RFCTL); |
|
1915 rfctl |= E1000_RFCTL_ACK_DIS; |
|
1916 ew32(RFCTL, rfctl); |
|
1917 } |
|
1918 |
|
1919 #define E1000_IVAR_INT_ALLOC_VALID 0x8 |
|
1920 /* Configure Rx vector */ |
|
1921 rx_ring->ims_val = E1000_IMS_RXQ0; |
|
1922 adapter->eiac_mask |= rx_ring->ims_val; |
|
1923 if (rx_ring->itr_val) |
|
1924 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1925 rx_ring->itr_register); |
|
1926 else |
|
1927 writel(1, rx_ring->itr_register); |
|
1928 ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
|
1929 |
|
1930 /* Configure Tx vector */ |
|
1931 tx_ring->ims_val = E1000_IMS_TXQ0; |
|
1932 vector++; |
|
1933 if (tx_ring->itr_val) |
|
1934 writel(1000000000 / (tx_ring->itr_val * 256), |
|
1935 tx_ring->itr_register); |
|
1936 else |
|
1937 writel(1, tx_ring->itr_register); |
|
1938 adapter->eiac_mask |= tx_ring->ims_val; |
|
1939 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); |
|
1940 |
|
1941 /* set vector for Other Causes, e.g. link changes */ |
|
1942 vector++; |
|
1943 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); |
|
1944 if (rx_ring->itr_val) |
|
1945 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1946 hw->hw_addr + E1000_EITR_82574(vector)); |
|
1947 else |
|
1948 writel(1, hw->hw_addr + E1000_EITR_82574(vector)); |
|
1949 |
|
1950 /* Cause Tx interrupts on every write back */ |
|
1951 ivar |= (1 << 31); |
|
1952 |
|
1953 ew32(IVAR, ivar); |
|
1954 |
|
1955 /* enable MSI-X PBA support */ |
|
1956 ctrl_ext = er32(CTRL_EXT); |
|
1957 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; |
|
1958 |
|
1959 /* Auto-Mask Other interrupts upon ICR read */ |
|
1960 #define E1000_EIAC_MASK_82574 0x01F00000 |
|
1961 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
|
1962 ctrl_ext |= E1000_CTRL_EXT_EIAME; |
|
1963 ew32(CTRL_EXT, ctrl_ext); |
|
1964 e1e_flush(); |
|
1965 } |
|
1966 |
|
1967 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) |
|
1968 { |
|
1969 if (adapter->msix_entries) { |
|
1970 pci_disable_msix(adapter->pdev); |
|
1971 kfree(adapter->msix_entries); |
|
1972 adapter->msix_entries = NULL; |
|
1973 } else if (adapter->flags & FLAG_MSI_ENABLED) { |
|
1974 pci_disable_msi(adapter->pdev); |
|
1975 adapter->flags &= ~FLAG_MSI_ENABLED; |
|
1976 } |
|
1977 } |
|
1978 |
|
1979 /** |
|
1980 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported |
|
1981 * |
|
1982 * Attempt to configure interrupts using the best available |
|
1983 * capabilities of the hardware and kernel. |
|
1984 **/ |
|
1985 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) |
|
1986 { |
|
1987 int err; |
|
1988 int i; |
|
1989 |
|
1990 switch (adapter->int_mode) { |
|
1991 case E1000E_INT_MODE_MSIX: |
|
1992 if (adapter->flags & FLAG_HAS_MSIX) { |
|
1993 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
|
1994 adapter->msix_entries = kcalloc(adapter->num_vectors, |
|
1995 sizeof(struct msix_entry), |
|
1996 GFP_KERNEL); |
|
1997 if (adapter->msix_entries) { |
|
1998 for (i = 0; i < adapter->num_vectors; i++) |
|
1999 adapter->msix_entries[i].entry = i; |
|
2000 |
|
2001 err = pci_enable_msix(adapter->pdev, |
|
2002 adapter->msix_entries, |
|
2003 adapter->num_vectors); |
|
2004 if (err == 0) |
|
2005 return; |
|
2006 } |
|
2007 /* MSI-X failed, so fall through and try MSI */ |
|
2008 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n"); |
|
2009 e1000e_reset_interrupt_capability(adapter); |
|
2010 } |
|
2011 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2012 /* Fall through */ |
|
2013 case E1000E_INT_MODE_MSI: |
|
2014 if (!pci_enable_msi(adapter->pdev)) { |
|
2015 adapter->flags |= FLAG_MSI_ENABLED; |
|
2016 } else { |
|
2017 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2018 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n"); |
|
2019 } |
|
2020 /* Fall through */ |
|
2021 case E1000E_INT_MODE_LEGACY: |
|
2022 /* Don't do anything; this is the system default */ |
|
2023 break; |
|
2024 } |
|
2025 |
|
2026 /* store the number of vectors being used */ |
|
2027 adapter->num_vectors = 1; |
|
2028 } |
|
2029 |
|
2030 /** |
|
2031 * e1000_request_msix - Initialize MSI-X interrupts |
|
2032 * |
|
2033 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the |
|
2034 * kernel. |
|
2035 **/ |
|
2036 static int e1000_request_msix(struct e1000_adapter *adapter) |
|
2037 { |
|
2038 struct net_device *netdev = adapter->netdev; |
|
2039 int err = 0, vector = 0; |
|
2040 |
|
2041 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2042 snprintf(adapter->rx_ring->name, |
|
2043 sizeof(adapter->rx_ring->name) - 1, |
|
2044 "%s-rx-0", netdev->name); |
|
2045 else |
|
2046 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); |
|
2047 err = request_irq(adapter->msix_entries[vector].vector, |
|
2048 e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
|
2049 netdev); |
|
2050 if (err) |
|
2051 return err; |
|
2052 adapter->rx_ring->itr_register = adapter->hw.hw_addr + |
|
2053 E1000_EITR_82574(vector); |
|
2054 adapter->rx_ring->itr_val = adapter->itr; |
|
2055 vector++; |
|
2056 |
|
2057 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2058 snprintf(adapter->tx_ring->name, |
|
2059 sizeof(adapter->tx_ring->name) - 1, |
|
2060 "%s-tx-0", netdev->name); |
|
2061 else |
|
2062 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); |
|
2063 err = request_irq(adapter->msix_entries[vector].vector, |
|
2064 e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
|
2065 netdev); |
|
2066 if (err) |
|
2067 return err; |
|
2068 adapter->tx_ring->itr_register = adapter->hw.hw_addr + |
|
2069 E1000_EITR_82574(vector); |
|
2070 adapter->tx_ring->itr_val = adapter->itr; |
|
2071 vector++; |
|
2072 |
|
2073 err = request_irq(adapter->msix_entries[vector].vector, |
|
2074 e1000_msix_other, 0, netdev->name, netdev); |
|
2075 if (err) |
|
2076 return err; |
|
2077 |
|
2078 e1000_configure_msix(adapter); |
|
2079 |
|
2080 return 0; |
|
2081 } |
|
2082 |
|
2083 /** |
|
2084 * e1000_request_irq - initialize interrupts |
|
2085 * |
|
2086 * Attempts to configure interrupts using the best available |
|
2087 * capabilities of the hardware and kernel. |
|
2088 **/ |
|
2089 static int e1000_request_irq(struct e1000_adapter *adapter) |
|
2090 { |
|
2091 struct net_device *netdev = adapter->netdev; |
|
2092 int err; |
|
2093 |
|
2094 if (adapter->ecdev) |
|
2095 return 0; |
|
2096 |
|
2097 if (adapter->msix_entries) { |
|
2098 err = e1000_request_msix(adapter); |
|
2099 if (!err) |
|
2100 return err; |
|
2101 /* fall back to MSI */ |
|
2102 e1000e_reset_interrupt_capability(adapter); |
|
2103 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2104 e1000e_set_interrupt_capability(adapter); |
|
2105 } |
|
2106 if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2107 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
|
2108 netdev->name, netdev); |
|
2109 if (!err) |
|
2110 return err; |
|
2111 |
|
2112 /* fall back to legacy interrupt */ |
|
2113 e1000e_reset_interrupt_capability(adapter); |
|
2114 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2115 } |
|
2116 |
|
2117 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
|
2118 netdev->name, netdev); |
|
2119 if (err) |
|
2120 e_err("Unable to allocate interrupt, Error: %d\n", err); |
|
2121 |
|
2122 return err; |
|
2123 } |
|
2124 |
|
2125 static void e1000_free_irq(struct e1000_adapter *adapter) |
|
2126 { |
|
2127 struct net_device *netdev = adapter->netdev; |
|
2128 |
|
2129 if (adapter->ecdev) |
|
2130 return; |
|
2131 |
|
2132 if (adapter->msix_entries) { |
|
2133 int vector = 0; |
|
2134 |
|
2135 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2136 vector++; |
|
2137 |
|
2138 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2139 vector++; |
|
2140 |
|
2141 /* Other Causes interrupt vector */ |
|
2142 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2143 return; |
|
2144 } |
|
2145 |
|
2146 free_irq(adapter->pdev->irq, netdev); |
|
2147 } |
|
2148 |
|
2149 /** |
|
2150 * e1000_irq_disable - Mask off interrupt generation on the NIC |
|
2151 **/ |
|
2152 static void e1000_irq_disable(struct e1000_adapter *adapter) |
|
2153 { |
|
2154 struct e1000_hw *hw = &adapter->hw; |
|
2155 |
|
2156 if (adapter->ecdev) |
|
2157 return; |
|
2158 |
|
2159 ew32(IMC, ~0); |
|
2160 if (adapter->msix_entries) |
|
2161 ew32(EIAC_82574, 0); |
|
2162 e1e_flush(); |
|
2163 |
|
2164 if (adapter->msix_entries) { |
|
2165 int i; |
|
2166 for (i = 0; i < adapter->num_vectors; i++) |
|
2167 synchronize_irq(adapter->msix_entries[i].vector); |
|
2168 } else { |
|
2169 synchronize_irq(adapter->pdev->irq); |
|
2170 } |
|
2171 } |
|
2172 |
|
2173 /** |
|
2174 * e1000_irq_enable - Enable default interrupt generation settings |
|
2175 **/ |
|
2176 static void e1000_irq_enable(struct e1000_adapter *adapter) |
|
2177 { |
|
2178 struct e1000_hw *hw = &adapter->hw; |
|
2179 |
|
2180 if (adapter->ecdev) |
|
2181 return; |
|
2182 |
|
2183 if (adapter->msix_entries) { |
|
2184 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); |
|
2185 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); |
|
2186 } else { |
|
2187 ew32(IMS, IMS_ENABLE_MASK); |
|
2188 } |
|
2189 e1e_flush(); |
|
2190 } |
|
2191 |
|
2192 /** |
|
2193 * e1000e_get_hw_control - get control of the h/w from f/w |
|
2194 * @adapter: address of board private structure |
|
2195 * |
|
2196 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2197 * For ASF and Pass Through versions of f/w this means that |
|
2198 * the driver is loaded. For AMT version (only with 82573) |
|
2199 * of the f/w this means that the network i/f is open. |
|
2200 **/ |
|
2201 void e1000e_get_hw_control(struct e1000_adapter *adapter) |
|
2202 { |
|
2203 struct e1000_hw *hw = &adapter->hw; |
|
2204 u32 ctrl_ext; |
|
2205 u32 swsm; |
|
2206 |
|
2207 /* Let firmware know the driver has taken over */ |
|
2208 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2209 swsm = er32(SWSM); |
|
2210 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
|
2211 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2212 ctrl_ext = er32(CTRL_EXT); |
|
2213 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
2214 } |
|
2215 } |
|
2216 |
|
2217 /** |
|
2218 * e1000e_release_hw_control - release control of the h/w to f/w |
|
2219 * @adapter: address of board private structure |
|
2220 * |
|
2221 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2222 * For ASF and Pass Through versions of f/w this means that the |
|
2223 * driver is no longer loaded. For AMT version (only with 82573) i |
|
2224 * of the f/w this means that the network i/f is closed. |
|
2225 * |
|
2226 **/ |
|
2227 void e1000e_release_hw_control(struct e1000_adapter *adapter) |
|
2228 { |
|
2229 struct e1000_hw *hw = &adapter->hw; |
|
2230 u32 ctrl_ext; |
|
2231 u32 swsm; |
|
2232 |
|
2233 /* Let firmware taken over control of h/w */ |
|
2234 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2235 swsm = er32(SWSM); |
|
2236 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
|
2237 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2238 ctrl_ext = er32(CTRL_EXT); |
|
2239 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
|
2240 } |
|
2241 } |
|
2242 |
|
2243 /** |
|
2244 * @e1000_alloc_ring - allocate memory for a ring structure |
|
2245 **/ |
|
2246 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, |
|
2247 struct e1000_ring *ring) |
|
2248 { |
|
2249 struct pci_dev *pdev = adapter->pdev; |
|
2250 |
|
2251 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, |
|
2252 GFP_KERNEL); |
|
2253 if (!ring->desc) |
|
2254 return -ENOMEM; |
|
2255 |
|
2256 return 0; |
|
2257 } |
|
2258 |
|
2259 /** |
|
2260 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) |
|
2261 * @tx_ring: Tx descriptor ring |
|
2262 * |
|
2263 * Return 0 on success, negative on failure |
|
2264 **/ |
|
2265 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring) |
|
2266 { |
|
2267 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2268 int err = -ENOMEM, size; |
|
2269 |
|
2270 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2271 tx_ring->buffer_info = vzalloc(size); |
|
2272 if (!tx_ring->buffer_info) |
|
2273 goto err; |
|
2274 |
|
2275 /* round up to nearest 4K */ |
|
2276 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2277 tx_ring->size = ALIGN(tx_ring->size, 4096); |
|
2278 |
|
2279 err = e1000_alloc_ring_dma(adapter, tx_ring); |
|
2280 if (err) |
|
2281 goto err; |
|
2282 |
|
2283 tx_ring->next_to_use = 0; |
|
2284 tx_ring->next_to_clean = 0; |
|
2285 |
|
2286 return 0; |
|
2287 err: |
|
2288 vfree(tx_ring->buffer_info); |
|
2289 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2290 return err; |
|
2291 } |
|
2292 |
|
2293 /** |
|
2294 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) |
|
2295 * @rx_ring: Rx descriptor ring |
|
2296 * |
|
2297 * Returns 0 on success, negative on failure |
|
2298 **/ |
|
2299 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring) |
|
2300 { |
|
2301 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2302 struct e1000_buffer *buffer_info; |
|
2303 int i, size, desc_len, err = -ENOMEM; |
|
2304 |
|
2305 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2306 rx_ring->buffer_info = vzalloc(size); |
|
2307 if (!rx_ring->buffer_info) |
|
2308 goto err; |
|
2309 |
|
2310 for (i = 0; i < rx_ring->count; i++) { |
|
2311 buffer_info = &rx_ring->buffer_info[i]; |
|
2312 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, |
|
2313 sizeof(struct e1000_ps_page), |
|
2314 GFP_KERNEL); |
|
2315 if (!buffer_info->ps_pages) |
|
2316 goto err_pages; |
|
2317 } |
|
2318 |
|
2319 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
2320 |
|
2321 /* Round up to nearest 4K */ |
|
2322 rx_ring->size = rx_ring->count * desc_len; |
|
2323 rx_ring->size = ALIGN(rx_ring->size, 4096); |
|
2324 |
|
2325 err = e1000_alloc_ring_dma(adapter, rx_ring); |
|
2326 if (err) |
|
2327 goto err_pages; |
|
2328 |
|
2329 rx_ring->next_to_clean = 0; |
|
2330 rx_ring->next_to_use = 0; |
|
2331 rx_ring->rx_skb_top = NULL; |
|
2332 |
|
2333 return 0; |
|
2334 |
|
2335 err_pages: |
|
2336 for (i = 0; i < rx_ring->count; i++) { |
|
2337 buffer_info = &rx_ring->buffer_info[i]; |
|
2338 kfree(buffer_info->ps_pages); |
|
2339 } |
|
2340 err: |
|
2341 vfree(rx_ring->buffer_info); |
|
2342 e_err("Unable to allocate memory for the receive descriptor ring\n"); |
|
2343 return err; |
|
2344 } |
|
2345 |
|
2346 /** |
|
2347 * e1000_clean_tx_ring - Free Tx Buffers |
|
2348 * @tx_ring: Tx descriptor ring |
|
2349 **/ |
|
2350 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring) |
|
2351 { |
|
2352 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2353 struct e1000_buffer *buffer_info; |
|
2354 unsigned long size; |
|
2355 unsigned int i; |
|
2356 |
|
2357 for (i = 0; i < tx_ring->count; i++) { |
|
2358 buffer_info = &tx_ring->buffer_info[i]; |
|
2359 e1000_put_txbuf(tx_ring, buffer_info); |
|
2360 } |
|
2361 |
|
2362 netdev_reset_queue(adapter->netdev); |
|
2363 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2364 memset(tx_ring->buffer_info, 0, size); |
|
2365 |
|
2366 memset(tx_ring->desc, 0, tx_ring->size); |
|
2367 |
|
2368 tx_ring->next_to_use = 0; |
|
2369 tx_ring->next_to_clean = 0; |
|
2370 |
|
2371 writel(0, tx_ring->head); |
|
2372 writel(0, tx_ring->tail); |
|
2373 } |
|
2374 |
|
2375 /** |
|
2376 * e1000e_free_tx_resources - Free Tx Resources per Queue |
|
2377 * @tx_ring: Tx descriptor ring |
|
2378 * |
|
2379 * Free all transmit software resources |
|
2380 **/ |
|
2381 void e1000e_free_tx_resources(struct e1000_ring *tx_ring) |
|
2382 { |
|
2383 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2384 struct pci_dev *pdev = adapter->pdev; |
|
2385 |
|
2386 e1000_clean_tx_ring(tx_ring); |
|
2387 |
|
2388 vfree(tx_ring->buffer_info); |
|
2389 tx_ring->buffer_info = NULL; |
|
2390 |
|
2391 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
2392 tx_ring->dma); |
|
2393 tx_ring->desc = NULL; |
|
2394 } |
|
2395 |
|
2396 /** |
|
2397 * e1000e_free_rx_resources - Free Rx Resources |
|
2398 * @rx_ring: Rx descriptor ring |
|
2399 * |
|
2400 * Free all receive software resources |
|
2401 **/ |
|
2402 void e1000e_free_rx_resources(struct e1000_ring *rx_ring) |
|
2403 { |
|
2404 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2405 struct pci_dev *pdev = adapter->pdev; |
|
2406 int i; |
|
2407 |
|
2408 e1000_clean_rx_ring(rx_ring); |
|
2409 |
|
2410 for (i = 0; i < rx_ring->count; i++) |
|
2411 kfree(rx_ring->buffer_info[i].ps_pages); |
|
2412 |
|
2413 vfree(rx_ring->buffer_info); |
|
2414 rx_ring->buffer_info = NULL; |
|
2415 |
|
2416 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2417 rx_ring->dma); |
|
2418 rx_ring->desc = NULL; |
|
2419 } |
|
2420 |
|
2421 /** |
|
2422 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2423 * @adapter: pointer to adapter |
|
2424 * @itr_setting: current adapter->itr |
|
2425 * @packets: the number of packets during this measurement interval |
|
2426 * @bytes: the number of bytes during this measurement interval |
|
2427 * |
|
2428 * Stores a new ITR value based on packets and byte |
|
2429 * counts during the last interrupt. The advantage of per interrupt |
|
2430 * computation is faster updates and more accurate ITR for the current |
|
2431 * traffic pattern. Constants in this function were computed |
|
2432 * based on theoretical maximum wire speed and thresholds were set based |
|
2433 * on testing data as well as attempting to minimize response time |
|
2434 * while increasing bulk throughput. This functionality is controlled |
|
2435 * by the InterruptThrottleRate module parameter. |
|
2436 **/ |
|
2437 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2438 u16 itr_setting, int packets, |
|
2439 int bytes) |
|
2440 { |
|
2441 unsigned int retval = itr_setting; |
|
2442 |
|
2443 if (packets == 0) |
|
2444 return itr_setting; |
|
2445 |
|
2446 switch (itr_setting) { |
|
2447 case lowest_latency: |
|
2448 /* handle TSO and jumbo frames */ |
|
2449 if (bytes/packets > 8000) |
|
2450 retval = bulk_latency; |
|
2451 else if ((packets < 5) && (bytes > 512)) |
|
2452 retval = low_latency; |
|
2453 break; |
|
2454 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2455 if (bytes > 10000) { |
|
2456 /* this if handles the TSO accounting */ |
|
2457 if (bytes/packets > 8000) |
|
2458 retval = bulk_latency; |
|
2459 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2460 retval = bulk_latency; |
|
2461 else if ((packets > 35)) |
|
2462 retval = lowest_latency; |
|
2463 } else if (bytes/packets > 2000) { |
|
2464 retval = bulk_latency; |
|
2465 } else if (packets <= 2 && bytes < 512) { |
|
2466 retval = lowest_latency; |
|
2467 } |
|
2468 break; |
|
2469 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2470 if (bytes > 25000) { |
|
2471 if (packets > 35) |
|
2472 retval = low_latency; |
|
2473 } else if (bytes < 6000) { |
|
2474 retval = low_latency; |
|
2475 } |
|
2476 break; |
|
2477 } |
|
2478 |
|
2479 return retval; |
|
2480 } |
|
2481 |
|
2482 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2483 { |
|
2484 struct e1000_hw *hw = &adapter->hw; |
|
2485 u16 current_itr; |
|
2486 u32 new_itr = adapter->itr; |
|
2487 |
|
2488 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2489 if (adapter->link_speed != SPEED_1000) { |
|
2490 current_itr = 0; |
|
2491 new_itr = 4000; |
|
2492 goto set_itr_now; |
|
2493 } |
|
2494 |
|
2495 if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
2496 new_itr = 0; |
|
2497 goto set_itr_now; |
|
2498 } |
|
2499 |
|
2500 adapter->tx_itr = e1000_update_itr(adapter, |
|
2501 adapter->tx_itr, |
|
2502 adapter->total_tx_packets, |
|
2503 adapter->total_tx_bytes); |
|
2504 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2505 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2506 adapter->tx_itr = low_latency; |
|
2507 |
|
2508 adapter->rx_itr = e1000_update_itr(adapter, |
|
2509 adapter->rx_itr, |
|
2510 adapter->total_rx_packets, |
|
2511 adapter->total_rx_bytes); |
|
2512 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2513 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2514 adapter->rx_itr = low_latency; |
|
2515 |
|
2516 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2517 |
|
2518 switch (current_itr) { |
|
2519 /* counts and packets in update_itr are dependent on these numbers */ |
|
2520 case lowest_latency: |
|
2521 new_itr = 70000; |
|
2522 break; |
|
2523 case low_latency: |
|
2524 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2525 break; |
|
2526 case bulk_latency: |
|
2527 new_itr = 4000; |
|
2528 break; |
|
2529 default: |
|
2530 break; |
|
2531 } |
|
2532 |
|
2533 set_itr_now: |
|
2534 if (new_itr != adapter->itr) { |
|
2535 /* |
|
2536 * this attempts to bias the interrupt rate towards Bulk |
|
2537 * by adding intermediate steps when interrupt rate is |
|
2538 * increasing |
|
2539 */ |
|
2540 new_itr = new_itr > adapter->itr ? |
|
2541 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2542 new_itr; |
|
2543 adapter->itr = new_itr; |
|
2544 adapter->rx_ring->itr_val = new_itr; |
|
2545 if (adapter->msix_entries) |
|
2546 adapter->rx_ring->set_itr = 1; |
|
2547 else |
|
2548 if (new_itr) |
|
2549 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2550 else |
|
2551 ew32(ITR, 0); |
|
2552 } |
|
2553 } |
|
2554 |
|
2555 /** |
|
2556 * e1000_alloc_queues - Allocate memory for all rings |
|
2557 * @adapter: board private structure to initialize |
|
2558 **/ |
|
2559 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
2560 { |
|
2561 int size = sizeof(struct e1000_ring); |
|
2562 |
|
2563 adapter->tx_ring = kzalloc(size, GFP_KERNEL); |
|
2564 if (!adapter->tx_ring) |
|
2565 goto err; |
|
2566 adapter->tx_ring->count = adapter->tx_ring_count; |
|
2567 adapter->tx_ring->adapter = adapter; |
|
2568 |
|
2569 adapter->rx_ring = kzalloc(size, GFP_KERNEL); |
|
2570 if (!adapter->rx_ring) |
|
2571 goto err; |
|
2572 adapter->rx_ring->count = adapter->rx_ring_count; |
|
2573 adapter->rx_ring->adapter = adapter; |
|
2574 |
|
2575 return 0; |
|
2576 err: |
|
2577 e_err("Unable to allocate memory for queues\n"); |
|
2578 kfree(adapter->rx_ring); |
|
2579 kfree(adapter->tx_ring); |
|
2580 return -ENOMEM; |
|
2581 } |
|
2582 |
|
2583 /** |
|
2584 * e1000_clean - NAPI Rx polling callback |
|
2585 * @napi: struct associated with this polling callback |
|
2586 * @budget: amount of packets driver is allowed to process this poll |
|
2587 **/ |
|
2588 static int e1000_clean(struct napi_struct *napi, int budget) |
|
2589 { |
|
2590 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
2591 struct e1000_hw *hw = &adapter->hw; |
|
2592 struct net_device *poll_dev = adapter->netdev; |
|
2593 int tx_cleaned = 1, work_done = 0; |
|
2594 |
|
2595 adapter = netdev_priv(poll_dev); |
|
2596 |
|
2597 if (adapter->msix_entries && |
|
2598 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) |
|
2599 goto clean_rx; |
|
2600 |
|
2601 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring); |
|
2602 |
|
2603 clean_rx: |
|
2604 adapter->clean_rx(adapter->rx_ring, &work_done, budget); |
|
2605 |
|
2606 if (!tx_cleaned) |
|
2607 work_done = budget; |
|
2608 |
|
2609 /* If budget not fully consumed, exit the polling mode */ |
|
2610 if (work_done < budget) { |
|
2611 if (adapter->itr_setting & 3) |
|
2612 e1000_set_itr(adapter); |
|
2613 napi_complete(napi); |
|
2614 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
2615 if (adapter->msix_entries) |
|
2616 ew32(IMS, adapter->rx_ring->ims_val); |
|
2617 else |
|
2618 e1000_irq_enable(adapter); |
|
2619 } |
|
2620 } |
|
2621 |
|
2622 return work_done; |
|
2623 } |
|
2624 |
|
2625 static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
2626 { |
|
2627 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2628 struct e1000_hw *hw = &adapter->hw; |
|
2629 u32 vfta, index; |
|
2630 |
|
2631 /* don't update vlan cookie if already programmed */ |
|
2632 if ((adapter->hw.mng_cookie.status & |
|
2633 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2634 (vid == adapter->mng_vlan_id)) |
|
2635 return 0; |
|
2636 |
|
2637 /* add VID to filter table */ |
|
2638 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2639 index = (vid >> 5) & 0x7F; |
|
2640 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2641 vfta |= (1 << (vid & 0x1F)); |
|
2642 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2643 } |
|
2644 |
|
2645 set_bit(vid, adapter->active_vlans); |
|
2646 |
|
2647 return 0; |
|
2648 } |
|
2649 |
|
2650 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
2651 { |
|
2652 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2653 struct e1000_hw *hw = &adapter->hw; |
|
2654 u32 vfta, index; |
|
2655 |
|
2656 if ((adapter->hw.mng_cookie.status & |
|
2657 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2658 (vid == adapter->mng_vlan_id)) { |
|
2659 /* release control to f/w */ |
|
2660 e1000e_release_hw_control(adapter); |
|
2661 return 0; |
|
2662 } |
|
2663 |
|
2664 /* remove VID from filter table */ |
|
2665 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2666 index = (vid >> 5) & 0x7F; |
|
2667 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2668 vfta &= ~(1 << (vid & 0x1F)); |
|
2669 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2670 } |
|
2671 |
|
2672 clear_bit(vid, adapter->active_vlans); |
|
2673 |
|
2674 return 0; |
|
2675 } |
|
2676 |
|
2677 /** |
|
2678 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering |
|
2679 * @adapter: board private structure to initialize |
|
2680 **/ |
|
2681 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) |
|
2682 { |
|
2683 struct net_device *netdev = adapter->netdev; |
|
2684 struct e1000_hw *hw = &adapter->hw; |
|
2685 u32 rctl; |
|
2686 |
|
2687 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2688 /* disable VLAN receive filtering */ |
|
2689 rctl = er32(RCTL); |
|
2690 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); |
|
2691 ew32(RCTL, rctl); |
|
2692 |
|
2693 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
2694 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
2695 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2696 } |
|
2697 } |
|
2698 } |
|
2699 |
|
2700 /** |
|
2701 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering |
|
2702 * @adapter: board private structure to initialize |
|
2703 **/ |
|
2704 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) |
|
2705 { |
|
2706 struct e1000_hw *hw = &adapter->hw; |
|
2707 u32 rctl; |
|
2708 |
|
2709 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2710 /* enable VLAN receive filtering */ |
|
2711 rctl = er32(RCTL); |
|
2712 rctl |= E1000_RCTL_VFE; |
|
2713 rctl &= ~E1000_RCTL_CFIEN; |
|
2714 ew32(RCTL, rctl); |
|
2715 } |
|
2716 } |
|
2717 |
|
2718 /** |
|
2719 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping |
|
2720 * @adapter: board private structure to initialize |
|
2721 **/ |
|
2722 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) |
|
2723 { |
|
2724 struct e1000_hw *hw = &adapter->hw; |
|
2725 u32 ctrl; |
|
2726 |
|
2727 /* disable VLAN tag insert/strip */ |
|
2728 ctrl = er32(CTRL); |
|
2729 ctrl &= ~E1000_CTRL_VME; |
|
2730 ew32(CTRL, ctrl); |
|
2731 } |
|
2732 |
|
2733 /** |
|
2734 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping |
|
2735 * @adapter: board private structure to initialize |
|
2736 **/ |
|
2737 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) |
|
2738 { |
|
2739 struct e1000_hw *hw = &adapter->hw; |
|
2740 u32 ctrl; |
|
2741 |
|
2742 /* enable VLAN tag insert/strip */ |
|
2743 ctrl = er32(CTRL); |
|
2744 ctrl |= E1000_CTRL_VME; |
|
2745 ew32(CTRL, ctrl); |
|
2746 } |
|
2747 |
|
2748 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
|
2749 { |
|
2750 struct net_device *netdev = adapter->netdev; |
|
2751 u16 vid = adapter->hw.mng_cookie.vlan_id; |
|
2752 u16 old_vid = adapter->mng_vlan_id; |
|
2753 |
|
2754 if (adapter->hw.mng_cookie.status & |
|
2755 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
|
2756 e1000_vlan_rx_add_vid(netdev, vid); |
|
2757 adapter->mng_vlan_id = vid; |
|
2758 } |
|
2759 |
|
2760 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
|
2761 e1000_vlan_rx_kill_vid(netdev, old_vid); |
|
2762 } |
|
2763 |
|
2764 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
2765 { |
|
2766 u16 vid; |
|
2767 |
|
2768 e1000_vlan_rx_add_vid(adapter->netdev, 0); |
|
2769 |
|
2770 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
|
2771 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
2772 } |
|
2773 |
|
2774 static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
|
2775 { |
|
2776 struct e1000_hw *hw = &adapter->hw; |
|
2777 u32 manc, manc2h, mdef, i, j; |
|
2778 |
|
2779 if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) |
|
2780 return; |
|
2781 |
|
2782 manc = er32(MANC); |
|
2783 |
|
2784 /* |
|
2785 * enable receiving management packets to the host. this will probably |
|
2786 * generate destination unreachable messages from the host OS, but |
|
2787 * the packets will be handled on SMBUS |
|
2788 */ |
|
2789 manc |= E1000_MANC_EN_MNG2HOST; |
|
2790 manc2h = er32(MANC2H); |
|
2791 |
|
2792 switch (hw->mac.type) { |
|
2793 default: |
|
2794 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); |
|
2795 break; |
|
2796 case e1000_82574: |
|
2797 case e1000_82583: |
|
2798 /* |
|
2799 * Check if IPMI pass-through decision filter already exists; |
|
2800 * if so, enable it. |
|
2801 */ |
|
2802 for (i = 0, j = 0; i < 8; i++) { |
|
2803 mdef = er32(MDEF(i)); |
|
2804 |
|
2805 /* Ignore filters with anything other than IPMI ports */ |
|
2806 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2807 continue; |
|
2808 |
|
2809 /* Enable this decision filter in MANC2H */ |
|
2810 if (mdef) |
|
2811 manc2h |= (1 << i); |
|
2812 |
|
2813 j |= mdef; |
|
2814 } |
|
2815 |
|
2816 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2817 break; |
|
2818 |
|
2819 /* Create new decision filter in an empty filter */ |
|
2820 for (i = 0, j = 0; i < 8; i++) |
|
2821 if (er32(MDEF(i)) == 0) { |
|
2822 ew32(MDEF(i), (E1000_MDEF_PORT_623 | |
|
2823 E1000_MDEF_PORT_664)); |
|
2824 manc2h |= (1 << 1); |
|
2825 j++; |
|
2826 break; |
|
2827 } |
|
2828 |
|
2829 if (!j) |
|
2830 e_warn("Unable to create IPMI pass-through filter\n"); |
|
2831 break; |
|
2832 } |
|
2833 |
|
2834 ew32(MANC2H, manc2h); |
|
2835 ew32(MANC, manc); |
|
2836 } |
|
2837 |
|
2838 /** |
|
2839 * e1000_configure_tx - Configure Transmit Unit after Reset |
|
2840 * @adapter: board private structure |
|
2841 * |
|
2842 * Configure the Tx unit of the MAC after a reset. |
|
2843 **/ |
|
2844 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
2845 { |
|
2846 struct e1000_hw *hw = &adapter->hw; |
|
2847 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2848 u64 tdba; |
|
2849 u32 tdlen, tarc; |
|
2850 |
|
2851 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
2852 tdba = tx_ring->dma; |
|
2853 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2854 ew32(TDBAL, (tdba & DMA_BIT_MASK(32))); |
|
2855 ew32(TDBAH, (tdba >> 32)); |
|
2856 ew32(TDLEN, tdlen); |
|
2857 ew32(TDH, 0); |
|
2858 ew32(TDT, 0); |
|
2859 tx_ring->head = adapter->hw.hw_addr + E1000_TDH; |
|
2860 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT; |
|
2861 |
|
2862 /* Set the Tx Interrupt Delay register */ |
|
2863 ew32(TIDV, adapter->tx_int_delay); |
|
2864 /* Tx irq moderation */ |
|
2865 ew32(TADV, adapter->tx_abs_int_delay); |
|
2866 |
|
2867 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
2868 u32 txdctl = er32(TXDCTL(0)); |
|
2869 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
|
2870 E1000_TXDCTL_WTHRESH); |
|
2871 /* |
|
2872 * set up some performance related parameters to encourage the |
|
2873 * hardware to use the bus more efficiently in bursts, depends |
|
2874 * on the tx_int_delay to be enabled, |
|
2875 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls |
|
2876 * hthresh = 1 ==> prefetch when one or more available |
|
2877 * pthresh = 0x1f ==> prefetch if internal cache 31 or less |
|
2878 * BEWARE: this seems to work but should be considered first if |
|
2879 * there are Tx hangs or other Tx related bugs |
|
2880 */ |
|
2881 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; |
|
2882 ew32(TXDCTL(0), txdctl); |
|
2883 } |
|
2884 /* erratum work around: set txdctl the same for both queues */ |
|
2885 ew32(TXDCTL(1), er32(TXDCTL(0))); |
|
2886 |
|
2887 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
|
2888 tarc = er32(TARC(0)); |
|
2889 /* |
|
2890 * set the speed mode bit, we'll clear it if we're not at |
|
2891 * gigabit link later |
|
2892 */ |
|
2893 #define SPEED_MODE_BIT (1 << 21) |
|
2894 tarc |= SPEED_MODE_BIT; |
|
2895 ew32(TARC(0), tarc); |
|
2896 } |
|
2897 |
|
2898 /* errata: program both queues to unweighted RR */ |
|
2899 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { |
|
2900 tarc = er32(TARC(0)); |
|
2901 tarc |= 1; |
|
2902 ew32(TARC(0), tarc); |
|
2903 tarc = er32(TARC(1)); |
|
2904 tarc |= 1; |
|
2905 ew32(TARC(1), tarc); |
|
2906 } |
|
2907 |
|
2908 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
2909 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
2910 |
|
2911 /* only set IDE if we are delaying interrupts using the timers */ |
|
2912 if (adapter->tx_int_delay) |
|
2913 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
2914 |
|
2915 /* enable Report Status bit */ |
|
2916 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
2917 |
|
2918 hw->mac.ops.config_collision_dist(hw); |
|
2919 } |
|
2920 |
|
2921 /** |
|
2922 * e1000_setup_rctl - configure the receive control registers |
|
2923 * @adapter: Board private structure |
|
2924 **/ |
|
2925 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
2926 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
2927 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
2928 { |
|
2929 struct e1000_hw *hw = &adapter->hw; |
|
2930 u32 rctl, rfctl; |
|
2931 u32 pages = 0; |
|
2932 |
|
2933 /* Workaround Si errata on 82579 - configure jumbo frame flow */ |
|
2934 if (hw->mac.type == e1000_pch2lan) { |
|
2935 s32 ret_val __attribute__ ((unused)); |
|
2936 |
|
2937 if (adapter->netdev->mtu > ETH_DATA_LEN) |
|
2938 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); |
|
2939 else |
|
2940 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); |
|
2941 |
|
2942 if (ret_val) |
|
2943 e_dbg("failed to enable jumbo frame workaround mode\n"); |
|
2944 } |
|
2945 |
|
2946 /* Program MC offset vector base */ |
|
2947 rctl = er32(RCTL); |
|
2948 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
2949 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
2950 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
2951 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
2952 |
|
2953 /* Do not Store bad packets */ |
|
2954 rctl &= ~E1000_RCTL_SBP; |
|
2955 |
|
2956 /* Enable Long Packet receive */ |
|
2957 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
2958 rctl &= ~E1000_RCTL_LPE; |
|
2959 else |
|
2960 rctl |= E1000_RCTL_LPE; |
|
2961 |
|
2962 /* Some systems expect that the CRC is included in SMBUS traffic. The |
|
2963 * hardware strips the CRC before sending to both SMBUS (BMC) and to |
|
2964 * host memory when this is enabled |
|
2965 */ |
|
2966 if (adapter->flags2 & FLAG2_CRC_STRIPPING) |
|
2967 rctl |= E1000_RCTL_SECRC; |
|
2968 |
|
2969 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
|
2970 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { |
|
2971 u16 phy_data; |
|
2972 |
|
2973 e1e_rphy(hw, PHY_REG(770, 26), &phy_data); |
|
2974 phy_data &= 0xfff8; |
|
2975 phy_data |= (1 << 2); |
|
2976 e1e_wphy(hw, PHY_REG(770, 26), phy_data); |
|
2977 |
|
2978 e1e_rphy(hw, 22, &phy_data); |
|
2979 phy_data &= 0x0fff; |
|
2980 phy_data |= (1 << 14); |
|
2981 e1e_wphy(hw, 0x10, 0x2823); |
|
2982 e1e_wphy(hw, 0x11, 0x0003); |
|
2983 e1e_wphy(hw, 22, phy_data); |
|
2984 } |
|
2985 |
|
2986 /* Setup buffer sizes */ |
|
2987 rctl &= ~E1000_RCTL_SZ_4096; |
|
2988 rctl |= E1000_RCTL_BSEX; |
|
2989 switch (adapter->rx_buffer_len) { |
|
2990 case 2048: |
|
2991 default: |
|
2992 rctl |= E1000_RCTL_SZ_2048; |
|
2993 rctl &= ~E1000_RCTL_BSEX; |
|
2994 break; |
|
2995 case 4096: |
|
2996 rctl |= E1000_RCTL_SZ_4096; |
|
2997 break; |
|
2998 case 8192: |
|
2999 rctl |= E1000_RCTL_SZ_8192; |
|
3000 break; |
|
3001 case 16384: |
|
3002 rctl |= E1000_RCTL_SZ_16384; |
|
3003 break; |
|
3004 } |
|
3005 |
|
3006 /* Enable Extended Status in all Receive Descriptors */ |
|
3007 rfctl = er32(RFCTL); |
|
3008 rfctl |= E1000_RFCTL_EXTEN; |
|
3009 |
|
3010 /* |
|
3011 * 82571 and greater support packet-split where the protocol |
|
3012 * header is placed in skb->data and the packet data is |
|
3013 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
3014 * In the case of a non-split, skb->data is linearly filled, |
|
3015 * followed by the page buffers. Therefore, skb->data is |
|
3016 * sized to hold the largest protocol header. |
|
3017 * |
|
3018 * allocations using alloc_page take too long for regular MTU |
|
3019 * so only enable packet split for jumbo frames |
|
3020 * |
|
3021 * Using pages when the page size is greater than 16k wastes |
|
3022 * a lot of memory, since we allocate 3 pages at all times |
|
3023 * per packet. |
|
3024 */ |
|
3025 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
3026 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
|
3027 adapter->rx_ps_pages = pages; |
|
3028 else |
|
3029 adapter->rx_ps_pages = 0; |
|
3030 |
|
3031 if (adapter->rx_ps_pages) { |
|
3032 u32 psrctl = 0; |
|
3033 |
|
3034 /* |
|
3035 * disable packet split support for IPv6 extension headers, |
|
3036 * because some malformed IPv6 headers can hang the Rx |
|
3037 */ |
|
3038 rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
|
3039 E1000_RFCTL_NEW_IPV6_EXT_DIS); |
|
3040 |
|
3041 /* Enable Packet split descriptors */ |
|
3042 rctl |= E1000_RCTL_DTYP_PS; |
|
3043 |
|
3044 psrctl |= adapter->rx_ps_bsize0 >> |
|
3045 E1000_PSRCTL_BSIZE0_SHIFT; |
|
3046 |
|
3047 switch (adapter->rx_ps_pages) { |
|
3048 case 3: |
|
3049 psrctl |= PAGE_SIZE << |
|
3050 E1000_PSRCTL_BSIZE3_SHIFT; |
|
3051 case 2: |
|
3052 psrctl |= PAGE_SIZE << |
|
3053 E1000_PSRCTL_BSIZE2_SHIFT; |
|
3054 case 1: |
|
3055 psrctl |= PAGE_SIZE >> |
|
3056 E1000_PSRCTL_BSIZE1_SHIFT; |
|
3057 break; |
|
3058 } |
|
3059 |
|
3060 ew32(PSRCTL, psrctl); |
|
3061 } |
|
3062 |
|
3063 /* This is useful for sniffing bad packets. */ |
|
3064 if (adapter->netdev->features & NETIF_F_RXALL) { |
|
3065 /* UPE and MPE will be handled by normal PROMISC logic |
|
3066 * in e1000e_set_rx_mode */ |
|
3067 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
|
3068 E1000_RCTL_BAM | /* RX All Bcast Pkts */ |
|
3069 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ |
|
3070 |
|
3071 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ |
|
3072 E1000_RCTL_DPF | /* Allow filtered pause */ |
|
3073 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ |
|
3074 /* Do not mess with E1000_CTRL_VME, it affects transmit as well, |
|
3075 * and that breaks VLANs. |
|
3076 */ |
|
3077 } |
|
3078 |
|
3079 ew32(RFCTL, rfctl); |
|
3080 ew32(RCTL, rctl); |
|
3081 /* just started the receive unit, no need to restart */ |
|
3082 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
3083 } |
|
3084 |
|
3085 /** |
|
3086 * e1000_configure_rx - Configure Receive Unit after Reset |
|
3087 * @adapter: board private structure |
|
3088 * |
|
3089 * Configure the Rx unit of the MAC after a reset. |
|
3090 **/ |
|
3091 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
3092 { |
|
3093 struct e1000_hw *hw = &adapter->hw; |
|
3094 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3095 u64 rdba; |
|
3096 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
3097 |
|
3098 if (adapter->rx_ps_pages) { |
|
3099 /* this is a 32 byte descriptor */ |
|
3100 rdlen = rx_ring->count * |
|
3101 sizeof(union e1000_rx_desc_packet_split); |
|
3102 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
3103 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
3104 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3105 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3106 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
3107 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
3108 } else { |
|
3109 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3110 adapter->clean_rx = e1000_clean_rx_irq; |
|
3111 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
3112 } |
|
3113 |
|
3114 /* disable receives while setting up the descriptors */ |
|
3115 rctl = er32(RCTL); |
|
3116 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3117 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3118 e1e_flush(); |
|
3119 usleep_range(10000, 20000); |
|
3120 |
|
3121 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
3122 /* |
|
3123 * set the writeback threshold (only takes effect if the RDTR |
|
3124 * is set). set GRAN=1 and write back up to 0x4 worth, and |
|
3125 * enable prefetching of 0x20 Rx descriptors |
|
3126 * granularity = 01 |
|
3127 * wthresh = 04, |
|
3128 * hthresh = 04, |
|
3129 * pthresh = 0x20 |
|
3130 */ |
|
3131 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3132 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3133 |
|
3134 /* |
|
3135 * override the delay timers for enabling bursting, only if |
|
3136 * the value was not set by the user via module options |
|
3137 */ |
|
3138 if (adapter->rx_int_delay == DEFAULT_RDTR) |
|
3139 adapter->rx_int_delay = BURST_RDTR; |
|
3140 if (adapter->rx_abs_int_delay == DEFAULT_RADV) |
|
3141 adapter->rx_abs_int_delay = BURST_RADV; |
|
3142 } |
|
3143 |
|
3144 /* set the Receive Delay Timer Register */ |
|
3145 ew32(RDTR, adapter->rx_int_delay); |
|
3146 |
|
3147 /* irq moderation */ |
|
3148 ew32(RADV, adapter->rx_abs_int_delay); |
|
3149 if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
|
3150 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
3151 |
|
3152 ctrl_ext = er32(CTRL_EXT); |
|
3153 /* Auto-Mask interrupts upon ICR access */ |
|
3154 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
3155 ew32(IAM, 0xffffffff); |
|
3156 ew32(CTRL_EXT, ctrl_ext); |
|
3157 e1e_flush(); |
|
3158 |
|
3159 /* |
|
3160 * Setup the HW Rx Head and Tail Descriptor Pointers and |
|
3161 * the Base and Length of the Rx Descriptor Ring |
|
3162 */ |
|
3163 rdba = rx_ring->dma; |
|
3164 ew32(RDBAL, (rdba & DMA_BIT_MASK(32))); |
|
3165 ew32(RDBAH, (rdba >> 32)); |
|
3166 ew32(RDLEN, rdlen); |
|
3167 ew32(RDH, 0); |
|
3168 ew32(RDT, 0); |
|
3169 rx_ring->head = adapter->hw.hw_addr + E1000_RDH; |
|
3170 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT; |
|
3171 |
|
3172 /* Enable Receive Checksum Offload for TCP and UDP */ |
|
3173 rxcsum = er32(RXCSUM); |
|
3174 if (adapter->netdev->features & NETIF_F_RXCSUM) |
|
3175 rxcsum |= E1000_RXCSUM_TUOFL; |
|
3176 else |
|
3177 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
3178 ew32(RXCSUM, rxcsum); |
|
3179 |
|
3180 if (adapter->hw.mac.type == e1000_pch2lan) { |
|
3181 /* |
|
3182 * With jumbo frames, excessive C-state transition |
|
3183 * latencies result in dropped transactions. |
|
3184 */ |
|
3185 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3186 u32 rxdctl = er32(RXDCTL(0)); |
|
3187 ew32(RXDCTL(0), rxdctl | 0x3); |
|
3188 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55); |
|
3189 } else { |
|
3190 pm_qos_update_request(&adapter->netdev->pm_qos_req, |
|
3191 PM_QOS_DEFAULT_VALUE); |
|
3192 } |
|
3193 } |
|
3194 |
|
3195 /* Enable Receives */ |
|
3196 ew32(RCTL, rctl); |
|
3197 } |
|
3198 |
|
3199 /** |
|
3200 * e1000e_write_mc_addr_list - write multicast addresses to MTA |
|
3201 * @netdev: network interface device structure |
|
3202 * |
|
3203 * Writes multicast address list to the MTA hash table. |
|
3204 * Returns: -ENOMEM on failure |
|
3205 * 0 on no addresses written |
|
3206 * X on writing X addresses to MTA |
|
3207 */ |
|
3208 static int e1000e_write_mc_addr_list(struct net_device *netdev) |
|
3209 { |
|
3210 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3211 struct e1000_hw *hw = &adapter->hw; |
|
3212 struct netdev_hw_addr *ha; |
|
3213 u8 *mta_list; |
|
3214 int i; |
|
3215 |
|
3216 if (netdev_mc_empty(netdev)) { |
|
3217 /* nothing to program, so clear mc list */ |
|
3218 hw->mac.ops.update_mc_addr_list(hw, NULL, 0); |
|
3219 return 0; |
|
3220 } |
|
3221 |
|
3222 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); |
|
3223 if (!mta_list) |
|
3224 return -ENOMEM; |
|
3225 |
|
3226 /* update_mc_addr_list expects a packed array of only addresses. */ |
|
3227 i = 0; |
|
3228 netdev_for_each_mc_addr(ha, netdev) |
|
3229 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
|
3230 |
|
3231 hw->mac.ops.update_mc_addr_list(hw, mta_list, i); |
|
3232 kfree(mta_list); |
|
3233 |
|
3234 return netdev_mc_count(netdev); |
|
3235 } |
|
3236 |
|
3237 /** |
|
3238 * e1000e_write_uc_addr_list - write unicast addresses to RAR table |
|
3239 * @netdev: network interface device structure |
|
3240 * |
|
3241 * Writes unicast address list to the RAR table. |
|
3242 * Returns: -ENOMEM on failure/insufficient address space |
|
3243 * 0 on no addresses written |
|
3244 * X on writing X addresses to the RAR table |
|
3245 **/ |
|
3246 static int e1000e_write_uc_addr_list(struct net_device *netdev) |
|
3247 { |
|
3248 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3249 struct e1000_hw *hw = &adapter->hw; |
|
3250 unsigned int rar_entries = hw->mac.rar_entry_count; |
|
3251 int count = 0; |
|
3252 |
|
3253 /* save a rar entry for our hardware address */ |
|
3254 rar_entries--; |
|
3255 |
|
3256 /* save a rar entry for the LAA workaround */ |
|
3257 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) |
|
3258 rar_entries--; |
|
3259 |
|
3260 /* return ENOMEM indicating insufficient memory for addresses */ |
|
3261 if (netdev_uc_count(netdev) > rar_entries) |
|
3262 return -ENOMEM; |
|
3263 |
|
3264 if (!netdev_uc_empty(netdev) && rar_entries) { |
|
3265 struct netdev_hw_addr *ha; |
|
3266 |
|
3267 /* |
|
3268 * write the addresses in reverse order to avoid write |
|
3269 * combining |
|
3270 */ |
|
3271 netdev_for_each_uc_addr(ha, netdev) { |
|
3272 if (!rar_entries) |
|
3273 break; |
|
3274 e1000e_rar_set(hw, ha->addr, rar_entries--); |
|
3275 count++; |
|
3276 } |
|
3277 } |
|
3278 |
|
3279 /* zero out the remaining RAR entries not used above */ |
|
3280 for (; rar_entries > 0; rar_entries--) { |
|
3281 ew32(RAH(rar_entries), 0); |
|
3282 ew32(RAL(rar_entries), 0); |
|
3283 } |
|
3284 e1e_flush(); |
|
3285 |
|
3286 return count; |
|
3287 } |
|
3288 |
|
3289 /** |
|
3290 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set |
|
3291 * @netdev: network interface device structure |
|
3292 * |
|
3293 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast |
|
3294 * address list or the network interface flags are updated. This routine is |
|
3295 * responsible for configuring the hardware for proper unicast, multicast, |
|
3296 * promiscuous mode, and all-multi behavior. |
|
3297 **/ |
|
3298 static void e1000e_set_rx_mode(struct net_device *netdev) |
|
3299 { |
|
3300 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3301 struct e1000_hw *hw = &adapter->hw; |
|
3302 u32 rctl; |
|
3303 |
|
3304 /* Check for Promiscuous and All Multicast modes */ |
|
3305 rctl = er32(RCTL); |
|
3306 |
|
3307 /* clear the affected bits */ |
|
3308 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3309 |
|
3310 if (netdev->flags & IFF_PROMISC) { |
|
3311 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3312 /* Do not hardware filter VLANs in promisc mode */ |
|
3313 e1000e_vlan_filter_disable(adapter); |
|
3314 } else { |
|
3315 int count; |
|
3316 |
|
3317 if (netdev->flags & IFF_ALLMULTI) { |
|
3318 rctl |= E1000_RCTL_MPE; |
|
3319 } else { |
|
3320 /* |
|
3321 * Write addresses to the MTA, if the attempt fails |
|
3322 * then we should just turn on promiscuous mode so |
|
3323 * that we can at least receive multicast traffic |
|
3324 */ |
|
3325 count = e1000e_write_mc_addr_list(netdev); |
|
3326 if (count < 0) |
|
3327 rctl |= E1000_RCTL_MPE; |
|
3328 } |
|
3329 e1000e_vlan_filter_enable(adapter); |
|
3330 /* |
|
3331 * Write addresses to available RAR registers, if there is not |
|
3332 * sufficient space to store all the addresses then enable |
|
3333 * unicast promiscuous mode |
|
3334 */ |
|
3335 count = e1000e_write_uc_addr_list(netdev); |
|
3336 if (count < 0) |
|
3337 rctl |= E1000_RCTL_UPE; |
|
3338 } |
|
3339 |
|
3340 ew32(RCTL, rctl); |
|
3341 |
|
3342 if (netdev->features & NETIF_F_HW_VLAN_RX) |
|
3343 e1000e_vlan_strip_enable(adapter); |
|
3344 else |
|
3345 e1000e_vlan_strip_disable(adapter); |
|
3346 } |
|
3347 |
|
3348 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter) |
|
3349 { |
|
3350 struct e1000_hw *hw = &adapter->hw; |
|
3351 u32 mrqc, rxcsum; |
|
3352 int i; |
|
3353 static const u32 rsskey[10] = { |
|
3354 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0, |
|
3355 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe |
|
3356 }; |
|
3357 |
|
3358 /* Fill out hash function seed */ |
|
3359 for (i = 0; i < 10; i++) |
|
3360 ew32(RSSRK(i), rsskey[i]); |
|
3361 |
|
3362 /* Direct all traffic to queue 0 */ |
|
3363 for (i = 0; i < 32; i++) |
|
3364 ew32(RETA(i), 0); |
|
3365 |
|
3366 /* |
|
3367 * Disable raw packet checksumming so that RSS hash is placed in |
|
3368 * descriptor on writeback. |
|
3369 */ |
|
3370 rxcsum = er32(RXCSUM); |
|
3371 rxcsum |= E1000_RXCSUM_PCSD; |
|
3372 |
|
3373 ew32(RXCSUM, rxcsum); |
|
3374 |
|
3375 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 | |
|
3376 E1000_MRQC_RSS_FIELD_IPV4_TCP | |
|
3377 E1000_MRQC_RSS_FIELD_IPV6 | |
|
3378 E1000_MRQC_RSS_FIELD_IPV6_TCP | |
|
3379 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
|
3380 |
|
3381 ew32(MRQC, mrqc); |
|
3382 } |
|
3383 |
|
3384 /** |
|
3385 * e1000_configure - configure the hardware for Rx and Tx |
|
3386 * @adapter: private board structure |
|
3387 **/ |
|
3388 static void e1000_configure(struct e1000_adapter *adapter) |
|
3389 { |
|
3390 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3391 |
|
3392 e1000e_set_rx_mode(adapter->netdev); |
|
3393 |
|
3394 e1000_restore_vlan(adapter); |
|
3395 e1000_init_manageability_pt(adapter); |
|
3396 |
|
3397 e1000_configure_tx(adapter); |
|
3398 |
|
3399 if (adapter->netdev->features & NETIF_F_RXHASH) |
|
3400 e1000e_setup_rss_hash(adapter); |
|
3401 e1000_setup_rctl(adapter); |
|
3402 e1000_configure_rx(adapter); |
|
3403 if (adapter->ecdev) { |
|
3404 adapter->alloc_rx_buf(rx_ring, adapter->rx_ring->count, GFP_KERNEL); |
|
3405 } else { |
|
3406 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), |
|
3407 GFP_KERNEL); |
|
3408 } |
|
3409 } |
|
3410 |
|
3411 /** |
|
3412 * e1000e_power_up_phy - restore link in case the phy was powered down |
|
3413 * @adapter: address of board private structure |
|
3414 * |
|
3415 * The phy may be powered down to save power and turn off link when the |
|
3416 * driver is unloaded and wake on lan is not enabled (among others) |
|
3417 * *** this routine MUST be followed by a call to e1000e_reset *** |
|
3418 **/ |
|
3419 void e1000e_power_up_phy(struct e1000_adapter *adapter) |
|
3420 { |
|
3421 if (adapter->hw.phy.ops.power_up) |
|
3422 adapter->hw.phy.ops.power_up(&adapter->hw); |
|
3423 |
|
3424 adapter->hw.mac.ops.setup_link(&adapter->hw); |
|
3425 } |
|
3426 |
|
3427 /** |
|
3428 * e1000_power_down_phy - Power down the PHY |
|
3429 * |
|
3430 * Power down the PHY so no link is implied when interface is down. |
|
3431 * The PHY cannot be powered down if management or WoL is active. |
|
3432 */ |
|
3433 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
3434 { |
|
3435 /* WoL is enabled */ |
|
3436 if (adapter->wol) |
|
3437 return; |
|
3438 |
|
3439 if (adapter->hw.phy.ops.power_down) |
|
3440 adapter->hw.phy.ops.power_down(&adapter->hw); |
|
3441 } |
|
3442 |
|
3443 /** |
|
3444 * e1000e_reset - bring the hardware into a known good state |
|
3445 * |
|
3446 * This function boots the hardware and enables some settings that |
|
3447 * require a configuration cycle of the hardware - those cannot be |
|
3448 * set/changed during runtime. After reset the device needs to be |
|
3449 * properly configured for Rx, Tx etc. |
|
3450 */ |
|
3451 void e1000e_reset(struct e1000_adapter *adapter) |
|
3452 { |
|
3453 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
3454 struct e1000_fc_info *fc = &adapter->hw.fc; |
|
3455 struct e1000_hw *hw = &adapter->hw; |
|
3456 u32 tx_space, min_tx_space, min_rx_space; |
|
3457 u32 pba = adapter->pba; |
|
3458 u16 hwm; |
|
3459 |
|
3460 /* reset Packet Buffer Allocation to default */ |
|
3461 ew32(PBA, pba); |
|
3462 |
|
3463 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3464 /* |
|
3465 * To maintain wire speed transmits, the Tx FIFO should be |
|
3466 * large enough to accommodate two full transmit packets, |
|
3467 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
3468 * the Rx FIFO should be large enough to accommodate at least |
|
3469 * one full receive packet and is similarly rounded up and |
|
3470 * expressed in KB. |
|
3471 */ |
|
3472 pba = er32(PBA); |
|
3473 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
3474 tx_space = pba >> 16; |
|
3475 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
3476 pba &= 0xffff; |
|
3477 /* |
|
3478 * the Tx fifo also stores 16 bytes of information about the Tx |
|
3479 * but don't include ethernet FCS because hardware appends it |
|
3480 */ |
|
3481 min_tx_space = (adapter->max_frame_size + |
|
3482 sizeof(struct e1000_tx_desc) - |
|
3483 ETH_FCS_LEN) * 2; |
|
3484 min_tx_space = ALIGN(min_tx_space, 1024); |
|
3485 min_tx_space >>= 10; |
|
3486 /* software strips receive CRC, so leave room for it */ |
|
3487 min_rx_space = adapter->max_frame_size; |
|
3488 min_rx_space = ALIGN(min_rx_space, 1024); |
|
3489 min_rx_space >>= 10; |
|
3490 |
|
3491 /* |
|
3492 * If current Tx allocation is less than the min Tx FIFO size, |
|
3493 * and the min Tx FIFO size is less than the current Rx FIFO |
|
3494 * allocation, take space away from current Rx allocation |
|
3495 */ |
|
3496 if ((tx_space < min_tx_space) && |
|
3497 ((min_tx_space - tx_space) < pba)) { |
|
3498 pba -= min_tx_space - tx_space; |
|
3499 |
|
3500 /* |
|
3501 * if short on Rx space, Rx wins and must trump Tx |
|
3502 * adjustment or use Early Receive if available |
|
3503 */ |
|
3504 if (pba < min_rx_space) |
|
3505 pba = min_rx_space; |
|
3506 } |
|
3507 |
|
3508 ew32(PBA, pba); |
|
3509 } |
|
3510 |
|
3511 /* |
|
3512 * flow control settings |
|
3513 * |
|
3514 * The high water mark must be low enough to fit one full frame |
|
3515 * (or the size used for early receive) above it in the Rx FIFO. |
|
3516 * Set it to the lower of: |
|
3517 * - 90% of the Rx FIFO size, and |
|
3518 * - the full Rx FIFO size minus one full frame |
|
3519 */ |
|
3520 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
|
3521 fc->pause_time = 0xFFFF; |
|
3522 else |
|
3523 fc->pause_time = E1000_FC_PAUSE_TIME; |
|
3524 fc->send_xon = true; |
|
3525 fc->current_mode = fc->requested_mode; |
|
3526 |
|
3527 switch (hw->mac.type) { |
|
3528 case e1000_ich9lan: |
|
3529 case e1000_ich10lan: |
|
3530 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3531 pba = 14; |
|
3532 ew32(PBA, pba); |
|
3533 fc->high_water = 0x2800; |
|
3534 fc->low_water = fc->high_water - 8; |
|
3535 break; |
|
3536 } |
|
3537 /* fall-through */ |
|
3538 default: |
|
3539 hwm = min(((pba << 10) * 9 / 10), |
|
3540 ((pba << 10) - adapter->max_frame_size)); |
|
3541 |
|
3542 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
|
3543 fc->low_water = fc->high_water - 8; |
|
3544 break; |
|
3545 case e1000_pchlan: |
|
3546 /* |
|
3547 * Workaround PCH LOM adapter hangs with certain network |
|
3548 * loads. If hangs persist, try disabling Tx flow control. |
|
3549 */ |
|
3550 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3551 fc->high_water = 0x3500; |
|
3552 fc->low_water = 0x1500; |
|
3553 } else { |
|
3554 fc->high_water = 0x5000; |
|
3555 fc->low_water = 0x3000; |
|
3556 } |
|
3557 fc->refresh_time = 0x1000; |
|
3558 break; |
|
3559 case e1000_pch2lan: |
|
3560 fc->high_water = 0x05C20; |
|
3561 fc->low_water = 0x05048; |
|
3562 fc->pause_time = 0x0650; |
|
3563 fc->refresh_time = 0x0400; |
|
3564 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3565 pba = 14; |
|
3566 ew32(PBA, pba); |
|
3567 } |
|
3568 break; |
|
3569 } |
|
3570 |
|
3571 /* |
|
3572 * Disable Adaptive Interrupt Moderation if 2 full packets cannot |
|
3573 * fit in receive buffer. |
|
3574 */ |
|
3575 if (adapter->itr_setting & 0x3) { |
|
3576 if ((adapter->max_frame_size * 2) > (pba << 10)) { |
|
3577 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
|
3578 dev_info(&adapter->pdev->dev, |
|
3579 "Interrupt Throttle Rate turned off\n"); |
|
3580 adapter->flags2 |= FLAG2_DISABLE_AIM; |
|
3581 ew32(ITR, 0); |
|
3582 } |
|
3583 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
3584 dev_info(&adapter->pdev->dev, |
|
3585 "Interrupt Throttle Rate turned on\n"); |
|
3586 adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
|
3587 adapter->itr = 20000; |
|
3588 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
3589 } |
|
3590 } |
|
3591 |
|
3592 /* Allow time for pending master requests to run */ |
|
3593 mac->ops.reset_hw(hw); |
|
3594 |
|
3595 /* |
|
3596 * For parts with AMT enabled, let the firmware know |
|
3597 * that the network interface is in control |
|
3598 */ |
|
3599 if (adapter->flags & FLAG_HAS_AMT) |
|
3600 e1000e_get_hw_control(adapter); |
|
3601 |
|
3602 ew32(WUC, 0); |
|
3603 |
|
3604 if (mac->ops.init_hw(hw)) |
|
3605 e_err("Hardware Error\n"); |
|
3606 |
|
3607 e1000_update_mng_vlan(adapter); |
|
3608 |
|
3609 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
3610 ew32(VET, ETH_P_8021Q); |
|
3611 |
|
3612 e1000e_reset_adaptive(hw); |
|
3613 |
|
3614 if (!netif_running(adapter->netdev) && |
|
3615 !test_bit(__E1000_TESTING, &adapter->state)) { |
|
3616 e1000_power_down_phy(adapter); |
|
3617 return; |
|
3618 } |
|
3619 |
|
3620 e1000_get_phy_info(hw); |
|
3621 |
|
3622 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
|
3623 !(adapter->flags & FLAG_SMART_POWER_DOWN)) { |
|
3624 u16 phy_data = 0; |
|
3625 /* |
|
3626 * speed up time to link by disabling smart power down, ignore |
|
3627 * the return value of this function because there is nothing |
|
3628 * different we would do if it failed |
|
3629 */ |
|
3630 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
|
3631 phy_data &= ~IGP02E1000_PM_SPD; |
|
3632 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); |
|
3633 } |
|
3634 } |
|
3635 |
|
3636 int e1000e_up(struct e1000_adapter *adapter) |
|
3637 { |
|
3638 struct e1000_hw *hw = &adapter->hw; |
|
3639 |
|
3640 /* hardware has been reset, we need to reload some things */ |
|
3641 e1000_configure(adapter); |
|
3642 |
|
3643 clear_bit(__E1000_DOWN, &adapter->state); |
|
3644 |
|
3645 if (adapter->msix_entries) |
|
3646 e1000_configure_msix(adapter); |
|
3647 |
|
3648 if (!adapter->ecdev) { |
|
3649 e1000_irq_enable(adapter); |
|
3650 |
|
3651 netif_start_queue(adapter->netdev); |
|
3652 |
|
3653 /* fire a link change interrupt to start the watchdog */ |
|
3654 if (adapter->msix_entries) |
|
3655 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3656 else |
|
3657 ew32(ICS, E1000_ICS_LSC); |
|
3658 } |
|
3659 |
|
3660 return 0; |
|
3661 } |
|
3662 |
|
3663 static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
|
3664 { |
|
3665 struct e1000_hw *hw = &adapter->hw; |
|
3666 |
|
3667 if (!(adapter->flags2 & FLAG2_DMA_BURST)) |
|
3668 return; |
|
3669 |
|
3670 /* flush pending descriptor writebacks to memory */ |
|
3671 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
3672 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
3673 |
|
3674 /* execute the writes immediately */ |
|
3675 e1e_flush(); |
|
3676 |
|
3677 /* |
|
3678 * due to rare timing issues, write to TIDV/RDTR again to ensure the |
|
3679 * write is successful |
|
3680 */ |
|
3681 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
3682 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
3683 |
|
3684 /* execute the writes immediately */ |
|
3685 e1e_flush(); |
|
3686 } |
|
3687 |
|
3688 static void e1000e_update_stats(struct e1000_adapter *adapter); |
|
3689 |
|
3690 void e1000e_down(struct e1000_adapter *adapter) |
|
3691 { |
|
3692 struct net_device *netdev = adapter->netdev; |
|
3693 struct e1000_hw *hw = &adapter->hw; |
|
3694 u32 tctl, rctl; |
|
3695 |
|
3696 /* |
|
3697 * signal that we're down so the interrupt handler does not |
|
3698 * reschedule our watchdog timer |
|
3699 */ |
|
3700 set_bit(__E1000_DOWN, &adapter->state); |
|
3701 |
|
3702 /* disable receives in the hardware */ |
|
3703 rctl = er32(RCTL); |
|
3704 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3705 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3706 /* flush and sleep below */ |
|
3707 |
|
3708 if (!adapter->ecdev) |
|
3709 netif_stop_queue(netdev); |
|
3710 |
|
3711 /* disable transmits in the hardware */ |
|
3712 tctl = er32(TCTL); |
|
3713 tctl &= ~E1000_TCTL_EN; |
|
3714 ew32(TCTL, tctl); |
|
3715 |
|
3716 /* flush both disables and wait for them to finish */ |
|
3717 e1e_flush(); |
|
3718 usleep_range(10000, 20000); |
|
3719 |
|
3720 if (!adapter->ecdev) { |
|
3721 e1000_irq_disable(adapter); |
|
3722 |
|
3723 del_timer_sync(&adapter->watchdog_timer); |
|
3724 del_timer_sync(&adapter->phy_info_timer); |
|
3725 } |
|
3726 |
|
3727 if (adapter->ecdev) { |
|
3728 ecdev_set_link(adapter->ecdev, 0); |
|
3729 } |
|
3730 else { |
|
3731 netif_carrier_off(netdev); |
|
3732 } |
|
3733 |
|
3734 spin_lock(&adapter->stats64_lock); |
|
3735 e1000e_update_stats(adapter); |
|
3736 spin_unlock(&adapter->stats64_lock); |
|
3737 |
|
3738 e1000e_flush_descriptors(adapter); |
|
3739 e1000_clean_tx_ring(adapter->tx_ring); |
|
3740 e1000_clean_rx_ring(adapter->rx_ring); |
|
3741 |
|
3742 adapter->link_speed = 0; |
|
3743 adapter->link_duplex = 0; |
|
3744 |
|
3745 if (!pci_channel_offline(adapter->pdev)) |
|
3746 e1000e_reset(adapter); |
|
3747 |
|
3748 /* |
|
3749 * TODO: for power management, we could drop the link and |
|
3750 * pci_disable_device here. |
|
3751 */ |
|
3752 } |
|
3753 |
|
3754 void e1000e_reinit_locked(struct e1000_adapter *adapter) |
|
3755 { |
|
3756 might_sleep(); |
|
3757 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
3758 usleep_range(1000, 2000); |
|
3759 e1000e_down(adapter); |
|
3760 e1000e_up(adapter); |
|
3761 clear_bit(__E1000_RESETTING, &adapter->state); |
|
3762 } |
|
3763 |
|
3764 /** |
|
3765 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
3766 * @adapter: board private structure to initialize |
|
3767 * |
|
3768 * e1000_sw_init initializes the Adapter private data structure. |
|
3769 * Fields are initialized based on PCI device information and |
|
3770 * OS network device settings (MTU size). |
|
3771 **/ |
|
3772 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
3773 { |
|
3774 struct net_device *netdev = adapter->netdev; |
|
3775 |
|
3776 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
|
3777 adapter->rx_ps_bsize0 = 128; |
|
3778 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
|
3779 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
|
3780 adapter->tx_ring_count = E1000_DEFAULT_TXD; |
|
3781 adapter->rx_ring_count = E1000_DEFAULT_RXD; |
|
3782 |
|
3783 spin_lock_init(&adapter->stats64_lock); |
|
3784 |
|
3785 e1000e_set_interrupt_capability(adapter); |
|
3786 |
|
3787 if (e1000_alloc_queues(adapter)) |
|
3788 return -ENOMEM; |
|
3789 |
|
3790 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
3791 e1000_irq_disable(adapter); |
|
3792 |
|
3793 set_bit(__E1000_DOWN, &adapter->state); |
|
3794 return 0; |
|
3795 } |
|
3796 |
|
3797 /** |
|
3798 * e1000_intr_msi_test - Interrupt Handler |
|
3799 * @irq: interrupt number |
|
3800 * @data: pointer to a network interface device structure |
|
3801 **/ |
|
3802 static irqreturn_t e1000_intr_msi_test(int irq, void *data) |
|
3803 { |
|
3804 struct net_device *netdev = data; |
|
3805 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3806 struct e1000_hw *hw = &adapter->hw; |
|
3807 u32 icr = er32(ICR); |
|
3808 |
|
3809 e_dbg("icr is %08X\n", icr); |
|
3810 if (icr & E1000_ICR_RXSEQ) { |
|
3811 adapter->flags &= ~FLAG_MSI_TEST_FAILED; |
|
3812 wmb(); |
|
3813 } |
|
3814 |
|
3815 return IRQ_HANDLED; |
|
3816 } |
|
3817 |
|
3818 /** |
|
3819 * e1000_test_msi_interrupt - Returns 0 for successful test |
|
3820 * @adapter: board private struct |
|
3821 * |
|
3822 * code flow taken from tg3.c |
|
3823 **/ |
|
3824 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) |
|
3825 { |
|
3826 struct net_device *netdev = adapter->netdev; |
|
3827 struct e1000_hw *hw = &adapter->hw; |
|
3828 int err; |
|
3829 |
|
3830 /* poll_enable hasn't been called yet, so don't need disable */ |
|
3831 /* clear any pending events */ |
|
3832 er32(ICR); |
|
3833 |
|
3834 /* free the real vector and request a test handler */ |
|
3835 e1000_free_irq(adapter); |
|
3836 e1000e_reset_interrupt_capability(adapter); |
|
3837 |
|
3838 /* Assume that the test fails, if it succeeds then the test |
|
3839 * MSI irq handler will unset this flag */ |
|
3840 adapter->flags |= FLAG_MSI_TEST_FAILED; |
|
3841 |
|
3842 err = pci_enable_msi(adapter->pdev); |
|
3843 if (err) |
|
3844 goto msi_test_failed; |
|
3845 |
|
3846 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
|
3847 netdev->name, netdev); |
|
3848 if (err) { |
|
3849 pci_disable_msi(adapter->pdev); |
|
3850 goto msi_test_failed; |
|
3851 } |
|
3852 |
|
3853 wmb(); |
|
3854 |
|
3855 e1000_irq_enable(adapter); |
|
3856 |
|
3857 /* fire an unusual interrupt on the test handler */ |
|
3858 ew32(ICS, E1000_ICS_RXSEQ); |
|
3859 e1e_flush(); |
|
3860 msleep(100); |
|
3861 |
|
3862 e1000_irq_disable(adapter); |
|
3863 |
|
3864 rmb(); |
|
3865 |
|
3866 if (adapter->flags & FLAG_MSI_TEST_FAILED) { |
|
3867 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
3868 e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
|
3869 } else { |
|
3870 e_dbg("MSI interrupt test succeeded!\n"); |
|
3871 } |
|
3872 |
|
3873 free_irq(adapter->pdev->irq, netdev); |
|
3874 pci_disable_msi(adapter->pdev); |
|
3875 |
|
3876 msi_test_failed: |
|
3877 e1000e_set_interrupt_capability(adapter); |
|
3878 return e1000_request_irq(adapter); |
|
3879 } |
|
3880 |
|
3881 /** |
|
3882 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored |
|
3883 * @adapter: board private struct |
|
3884 * |
|
3885 * code flow taken from tg3.c, called with e1000 interrupts disabled. |
|
3886 **/ |
|
3887 static int e1000_test_msi(struct e1000_adapter *adapter) |
|
3888 { |
|
3889 int err; |
|
3890 u16 pci_cmd; |
|
3891 |
|
3892 if (!(adapter->flags & FLAG_MSI_ENABLED)) |
|
3893 return 0; |
|
3894 |
|
3895 /* disable SERR in case the MSI write causes a master abort */ |
|
3896 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3897 if (pci_cmd & PCI_COMMAND_SERR) |
|
3898 pci_write_config_word(adapter->pdev, PCI_COMMAND, |
|
3899 pci_cmd & ~PCI_COMMAND_SERR); |
|
3900 |
|
3901 err = e1000_test_msi_interrupt(adapter); |
|
3902 |
|
3903 /* re-enable SERR */ |
|
3904 if (pci_cmd & PCI_COMMAND_SERR) { |
|
3905 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3906 pci_cmd |= PCI_COMMAND_SERR; |
|
3907 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); |
|
3908 } |
|
3909 |
|
3910 return err; |
|
3911 } |
|
3912 |
|
3913 /** |
|
3914 * e1000_open - Called when a network interface is made active |
|
3915 * @netdev: network interface device structure |
|
3916 * |
|
3917 * Returns 0 on success, negative value on failure |
|
3918 * |
|
3919 * The open entry point is called when a network interface is made |
|
3920 * active by the system (IFF_UP). At this point all resources needed |
|
3921 * for transmit and receive operations are allocated, the interrupt |
|
3922 * handler is registered with the OS, the watchdog timer is started, |
|
3923 * and the stack is notified that the interface is ready. |
|
3924 **/ |
|
3925 static int e1000_open(struct net_device *netdev) |
|
3926 { |
|
3927 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3928 struct e1000_hw *hw = &adapter->hw; |
|
3929 struct pci_dev *pdev = adapter->pdev; |
|
3930 int err; |
|
3931 |
|
3932 /* disallow open during test */ |
|
3933 if (test_bit(__E1000_TESTING, &adapter->state)) |
|
3934 return -EBUSY; |
|
3935 |
|
3936 pm_runtime_get_sync(&pdev->dev); |
|
3937 |
|
3938 if (adapter->ecdev) { |
|
3939 ecdev_set_link(adapter->ecdev, 0); |
|
3940 } else { |
|
3941 netif_carrier_off(netdev); |
|
3942 } |
|
3943 |
|
3944 /* allocate transmit descriptors */ |
|
3945 err = e1000e_setup_tx_resources(adapter->tx_ring); |
|
3946 if (err) |
|
3947 goto err_setup_tx; |
|
3948 |
|
3949 /* allocate receive descriptors */ |
|
3950 err = e1000e_setup_rx_resources(adapter->rx_ring); |
|
3951 if (err) |
|
3952 goto err_setup_rx; |
|
3953 |
|
3954 /* |
|
3955 * If AMT is enabled, let the firmware know that the network |
|
3956 * interface is now open and reset the part to a known state. |
|
3957 */ |
|
3958 if (adapter->flags & FLAG_HAS_AMT) { |
|
3959 e1000e_get_hw_control(adapter); |
|
3960 e1000e_reset(adapter); |
|
3961 } |
|
3962 |
|
3963 e1000e_power_up_phy(adapter); |
|
3964 |
|
3965 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
3966 if ((adapter->hw.mng_cookie.status & |
|
3967 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
|
3968 e1000_update_mng_vlan(adapter); |
|
3969 |
|
3970 /* DMA latency requirement to workaround jumbo issue */ |
|
3971 if (adapter->hw.mac.type == e1000_pch2lan) |
|
3972 pm_qos_add_request(&adapter->netdev->pm_qos_req, |
|
3973 PM_QOS_CPU_DMA_LATENCY, |
|
3974 PM_QOS_DEFAULT_VALUE); |
|
3975 |
|
3976 /* |
|
3977 * before we allocate an interrupt, we must be ready to handle it. |
|
3978 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
3979 * as soon as we call pci_request_irq, so we have to setup our |
|
3980 * clean_rx handler before we do so. |
|
3981 */ |
|
3982 e1000_configure(adapter); |
|
3983 |
|
3984 err = e1000_request_irq(adapter); |
|
3985 if (err) |
|
3986 goto err_req_irq; |
|
3987 |
|
3988 /* |
|
3989 * Work around PCIe errata with MSI interrupts causing some chipsets to |
|
3990 * ignore e1000e MSI messages, which means we need to test our MSI |
|
3991 * interrupt now |
|
3992 */ |
|
3993 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
|
3994 err = e1000_test_msi(adapter); |
|
3995 if (err) { |
|
3996 e_err("Interrupt allocation failed\n"); |
|
3997 goto err_req_irq; |
|
3998 } |
|
3999 } |
|
4000 |
|
4001 /* From here on the code is the same as e1000e_up() */ |
|
4002 clear_bit(__E1000_DOWN, &adapter->state); |
|
4003 |
|
4004 if (!adapter->ecdev) { |
|
4005 napi_enable(&adapter->napi); |
|
4006 |
|
4007 e1000_irq_enable(adapter); |
|
4008 } |
|
4009 |
|
4010 adapter->tx_hang_recheck = false; |
|
4011 |
|
4012 if (!adapter->ecdev) { |
|
4013 netif_start_queue(netdev); |
|
4014 } |
|
4015 |
|
4016 adapter->idle_check = true; |
|
4017 pm_runtime_put(&pdev->dev); |
|
4018 |
|
4019 /* fire a link status change interrupt to start the watchdog */ |
|
4020 if (adapter->msix_entries) |
|
4021 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
4022 else |
|
4023 ew32(ICS, E1000_ICS_LSC); |
|
4024 |
|
4025 return 0; |
|
4026 |
|
4027 err_req_irq: |
|
4028 e1000e_release_hw_control(adapter); |
|
4029 e1000_power_down_phy(adapter); |
|
4030 e1000e_free_rx_resources(adapter->rx_ring); |
|
4031 err_setup_rx: |
|
4032 e1000e_free_tx_resources(adapter->tx_ring); |
|
4033 err_setup_tx: |
|
4034 e1000e_reset(adapter); |
|
4035 pm_runtime_put_sync(&pdev->dev); |
|
4036 |
|
4037 return err; |
|
4038 } |
|
4039 |
|
4040 /** |
|
4041 * e1000_close - Disables a network interface |
|
4042 * @netdev: network interface device structure |
|
4043 * |
|
4044 * Returns 0, this is not allowed to fail |
|
4045 * |
|
4046 * The close entry point is called when an interface is de-activated |
|
4047 * by the OS. The hardware is still under the drivers control, but |
|
4048 * needs to be disabled. A global MAC reset is issued to stop the |
|
4049 * hardware, and all transmit and receive resources are freed. |
|
4050 **/ |
|
4051 static int e1000_close(struct net_device *netdev) |
|
4052 { |
|
4053 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4054 struct pci_dev *pdev = adapter->pdev; |
|
4055 int count = E1000_CHECK_RESET_COUNT; |
|
4056 |
|
4057 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
4058 usleep_range(10000, 20000); |
|
4059 |
|
4060 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
4061 |
|
4062 pm_runtime_get_sync(&pdev->dev); |
|
4063 |
|
4064 napi_disable(&adapter->napi); |
|
4065 |
|
4066 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
4067 e1000e_down(adapter); |
|
4068 e1000_free_irq(adapter); |
|
4069 } |
|
4070 e1000_power_down_phy(adapter); |
|
4071 |
|
4072 e1000e_free_tx_resources(adapter->tx_ring); |
|
4073 e1000e_free_rx_resources(adapter->rx_ring); |
|
4074 |
|
4075 /* |
|
4076 * kill manageability vlan ID if supported, but not if a vlan with |
|
4077 * the same ID is registered on the host OS (let 8021q kill it) |
|
4078 */ |
|
4079 if (adapter->hw.mng_cookie.status & |
|
4080 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
|
4081 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4082 |
|
4083 /* |
|
4084 * If AMT is enabled, let the firmware know that the network |
|
4085 * interface is now closed |
|
4086 */ |
|
4087 if ((adapter->flags & FLAG_HAS_AMT) && |
|
4088 !test_bit(__E1000_TESTING, &adapter->state)) |
|
4089 e1000e_release_hw_control(adapter); |
|
4090 |
|
4091 if (adapter->hw.mac.type == e1000_pch2lan) |
|
4092 pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
|
4093 |
|
4094 pm_runtime_put_sync(&pdev->dev); |
|
4095 |
|
4096 return 0; |
|
4097 } |
|
4098 /** |
|
4099 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
4100 * @netdev: network interface device structure |
|
4101 * @p: pointer to an address structure |
|
4102 * |
|
4103 * Returns 0 on success, negative on failure |
|
4104 **/ |
|
4105 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
4106 { |
|
4107 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4108 struct sockaddr *addr = p; |
|
4109 |
|
4110 if (!is_valid_ether_addr(addr->sa_data)) |
|
4111 return -EADDRNOTAVAIL; |
|
4112 |
|
4113 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
4114 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
|
4115 |
|
4116 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
|
4117 |
|
4118 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { |
|
4119 /* activate the work around */ |
|
4120 e1000e_set_laa_state_82571(&adapter->hw, 1); |
|
4121 |
|
4122 /* |
|
4123 * Hold a copy of the LAA in RAR[14] This is done so that |
|
4124 * between the time RAR[0] gets clobbered and the time it |
|
4125 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
4126 * of the RARs and no incoming packets directed to this port |
|
4127 * are dropped. Eventually the LAA will be in RAR[0] and |
|
4128 * RAR[14] |
|
4129 */ |
|
4130 e1000e_rar_set(&adapter->hw, |
|
4131 adapter->hw.mac.addr, |
|
4132 adapter->hw.mac.rar_entry_count - 1); |
|
4133 } |
|
4134 |
|
4135 return 0; |
|
4136 } |
|
4137 |
|
4138 /** |
|
4139 * e1000e_update_phy_task - work thread to update phy |
|
4140 * @work: pointer to our work struct |
|
4141 * |
|
4142 * this worker thread exists because we must acquire a |
|
4143 * semaphore to read the phy, which we could msleep while |
|
4144 * waiting for it, and we can't msleep in a timer. |
|
4145 **/ |
|
4146 static void e1000e_update_phy_task(struct work_struct *work) |
|
4147 { |
|
4148 struct e1000_adapter *adapter = container_of(work, |
|
4149 struct e1000_adapter, update_phy_task); |
|
4150 |
|
4151 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4152 return; |
|
4153 |
|
4154 e1000_get_phy_info(&adapter->hw); |
|
4155 } |
|
4156 |
|
4157 /* |
|
4158 * Need to wait a few seconds after link up to get diagnostic information from |
|
4159 * the phy |
|
4160 */ |
|
4161 static void e1000_update_phy_info(unsigned long data) |
|
4162 { |
|
4163 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4164 |
|
4165 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4166 return; |
|
4167 |
|
4168 schedule_work(&adapter->update_phy_task); |
|
4169 } |
|
4170 |
|
4171 /** |
|
4172 * e1000e_update_phy_stats - Update the PHY statistics counters |
|
4173 * @adapter: board private structure |
|
4174 * |
|
4175 * Read/clear the upper 16-bit PHY registers and read/accumulate lower |
|
4176 **/ |
|
4177 static void e1000e_update_phy_stats(struct e1000_adapter *adapter) |
|
4178 { |
|
4179 struct e1000_hw *hw = &adapter->hw; |
|
4180 s32 ret_val; |
|
4181 u16 phy_data; |
|
4182 |
|
4183 ret_val = hw->phy.ops.acquire(hw); |
|
4184 if (ret_val) |
|
4185 return; |
|
4186 |
|
4187 /* |
|
4188 * A page set is expensive so check if already on desired page. |
|
4189 * If not, set to the page with the PHY status registers. |
|
4190 */ |
|
4191 hw->phy.addr = 1; |
|
4192 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
4193 &phy_data); |
|
4194 if (ret_val) |
|
4195 goto release; |
|
4196 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
|
4197 ret_val = hw->phy.ops.set_page(hw, |
|
4198 HV_STATS_PAGE << IGP_PAGE_SHIFT); |
|
4199 if (ret_val) |
|
4200 goto release; |
|
4201 } |
|
4202 |
|
4203 /* Single Collision Count */ |
|
4204 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
|
4205 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); |
|
4206 if (!ret_val) |
|
4207 adapter->stats.scc += phy_data; |
|
4208 |
|
4209 /* Excessive Collision Count */ |
|
4210 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
|
4211 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); |
|
4212 if (!ret_val) |
|
4213 adapter->stats.ecol += phy_data; |
|
4214 |
|
4215 /* Multiple Collision Count */ |
|
4216 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
|
4217 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); |
|
4218 if (!ret_val) |
|
4219 adapter->stats.mcc += phy_data; |
|
4220 |
|
4221 /* Late Collision Count */ |
|
4222 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
|
4223 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); |
|
4224 if (!ret_val) |
|
4225 adapter->stats.latecol += phy_data; |
|
4226 |
|
4227 /* Collision Count - also used for adaptive IFS */ |
|
4228 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
|
4229 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); |
|
4230 if (!ret_val) |
|
4231 hw->mac.collision_delta = phy_data; |
|
4232 |
|
4233 /* Defer Count */ |
|
4234 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
|
4235 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); |
|
4236 if (!ret_val) |
|
4237 adapter->stats.dc += phy_data; |
|
4238 |
|
4239 /* Transmit with no CRS */ |
|
4240 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
|
4241 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); |
|
4242 if (!ret_val) |
|
4243 adapter->stats.tncrs += phy_data; |
|
4244 |
|
4245 release: |
|
4246 hw->phy.ops.release(hw); |
|
4247 } |
|
4248 |
|
4249 /** |
|
4250 * e1000e_update_stats - Update the board statistics counters |
|
4251 * @adapter: board private structure |
|
4252 **/ |
|
4253 static void e1000e_update_stats(struct e1000_adapter *adapter) |
|
4254 { |
|
4255 struct net_device *netdev = adapter->netdev; |
|
4256 struct e1000_hw *hw = &adapter->hw; |
|
4257 struct pci_dev *pdev = adapter->pdev; |
|
4258 |
|
4259 /* |
|
4260 * Prevent stats update while adapter is being reset, or if the pci |
|
4261 * connection is down. |
|
4262 */ |
|
4263 if (adapter->link_speed == 0) |
|
4264 return; |
|
4265 if (pci_channel_offline(pdev)) |
|
4266 return; |
|
4267 |
|
4268 adapter->stats.crcerrs += er32(CRCERRS); |
|
4269 adapter->stats.gprc += er32(GPRC); |
|
4270 adapter->stats.gorc += er32(GORCL); |
|
4271 er32(GORCH); /* Clear gorc */ |
|
4272 adapter->stats.bprc += er32(BPRC); |
|
4273 adapter->stats.mprc += er32(MPRC); |
|
4274 adapter->stats.roc += er32(ROC); |
|
4275 |
|
4276 adapter->stats.mpc += er32(MPC); |
|
4277 |
|
4278 /* Half-duplex statistics */ |
|
4279 if (adapter->link_duplex == HALF_DUPLEX) { |
|
4280 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { |
|
4281 e1000e_update_phy_stats(adapter); |
|
4282 } else { |
|
4283 adapter->stats.scc += er32(SCC); |
|
4284 adapter->stats.ecol += er32(ECOL); |
|
4285 adapter->stats.mcc += er32(MCC); |
|
4286 adapter->stats.latecol += er32(LATECOL); |
|
4287 adapter->stats.dc += er32(DC); |
|
4288 |
|
4289 hw->mac.collision_delta = er32(COLC); |
|
4290 |
|
4291 if ((hw->mac.type != e1000_82574) && |
|
4292 (hw->mac.type != e1000_82583)) |
|
4293 adapter->stats.tncrs += er32(TNCRS); |
|
4294 } |
|
4295 adapter->stats.colc += hw->mac.collision_delta; |
|
4296 } |
|
4297 |
|
4298 adapter->stats.xonrxc += er32(XONRXC); |
|
4299 adapter->stats.xontxc += er32(XONTXC); |
|
4300 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
4301 adapter->stats.xofftxc += er32(XOFFTXC); |
|
4302 adapter->stats.gptc += er32(GPTC); |
|
4303 adapter->stats.gotc += er32(GOTCL); |
|
4304 er32(GOTCH); /* Clear gotc */ |
|
4305 adapter->stats.rnbc += er32(RNBC); |
|
4306 adapter->stats.ruc += er32(RUC); |
|
4307 |
|
4308 adapter->stats.mptc += er32(MPTC); |
|
4309 adapter->stats.bptc += er32(BPTC); |
|
4310 |
|
4311 /* used for adaptive IFS */ |
|
4312 |
|
4313 hw->mac.tx_packet_delta = er32(TPT); |
|
4314 adapter->stats.tpt += hw->mac.tx_packet_delta; |
|
4315 |
|
4316 adapter->stats.algnerrc += er32(ALGNERRC); |
|
4317 adapter->stats.rxerrc += er32(RXERRC); |
|
4318 adapter->stats.cexterr += er32(CEXTERR); |
|
4319 adapter->stats.tsctc += er32(TSCTC); |
|
4320 adapter->stats.tsctfc += er32(TSCTFC); |
|
4321 |
|
4322 /* Fill out the OS statistics structure */ |
|
4323 netdev->stats.multicast = adapter->stats.mprc; |
|
4324 netdev->stats.collisions = adapter->stats.colc; |
|
4325 |
|
4326 /* Rx Errors */ |
|
4327 |
|
4328 /* |
|
4329 * RLEC on some newer hardware can be incorrect so build |
|
4330 * our own version based on RUC and ROC |
|
4331 */ |
|
4332 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
4333 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
4334 adapter->stats.ruc + adapter->stats.roc + |
|
4335 adapter->stats.cexterr; |
|
4336 netdev->stats.rx_length_errors = adapter->stats.ruc + |
|
4337 adapter->stats.roc; |
|
4338 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
4339 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
4340 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
4341 |
|
4342 /* Tx Errors */ |
|
4343 netdev->stats.tx_errors = adapter->stats.ecol + |
|
4344 adapter->stats.latecol; |
|
4345 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
4346 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
4347 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
4348 |
|
4349 /* Tx Dropped needs to be maintained elsewhere */ |
|
4350 |
|
4351 /* Management Stats */ |
|
4352 adapter->stats.mgptc += er32(MGTPTC); |
|
4353 adapter->stats.mgprc += er32(MGTPRC); |
|
4354 adapter->stats.mgpdc += er32(MGTPDC); |
|
4355 } |
|
4356 |
|
4357 /** |
|
4358 * e1000_phy_read_status - Update the PHY register status snapshot |
|
4359 * @adapter: board private structure |
|
4360 **/ |
|
4361 static void e1000_phy_read_status(struct e1000_adapter *adapter) |
|
4362 { |
|
4363 struct e1000_hw *hw = &adapter->hw; |
|
4364 struct e1000_phy_regs *phy = &adapter->phy_regs; |
|
4365 |
|
4366 if ((er32(STATUS) & E1000_STATUS_LU) && |
|
4367 (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
|
4368 int ret_val; |
|
4369 |
|
4370 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); |
|
4371 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); |
|
4372 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); |
|
4373 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); |
|
4374 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); |
|
4375 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); |
|
4376 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); |
|
4377 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); |
|
4378 if (ret_val) |
|
4379 e_warn("Error reading PHY register\n"); |
|
4380 } else { |
|
4381 /* |
|
4382 * Do not read PHY registers if link is not up |
|
4383 * Set values to typical power-on defaults |
|
4384 */ |
|
4385 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); |
|
4386 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | |
|
4387 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | |
|
4388 BMSR_ERCAP); |
|
4389 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | |
|
4390 ADVERTISE_ALL | ADVERTISE_CSMA); |
|
4391 phy->lpa = 0; |
|
4392 phy->expansion = EXPANSION_ENABLENPAGE; |
|
4393 phy->ctrl1000 = ADVERTISE_1000FULL; |
|
4394 phy->stat1000 = 0; |
|
4395 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); |
|
4396 } |
|
4397 } |
|
4398 |
|
4399 static void e1000_print_link_info(struct e1000_adapter *adapter) |
|
4400 { |
|
4401 struct e1000_hw *hw = &adapter->hw; |
|
4402 u32 ctrl = er32(CTRL); |
|
4403 |
|
4404 /* Link status message must follow this format for user tools */ |
|
4405 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", |
|
4406 adapter->netdev->name, |
|
4407 adapter->link_speed, |
|
4408 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half", |
|
4409 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" : |
|
4410 (ctrl & E1000_CTRL_RFCE) ? "Rx" : |
|
4411 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"); |
|
4412 } |
|
4413 |
|
4414 static bool e1000e_has_link(struct e1000_adapter *adapter) |
|
4415 { |
|
4416 struct e1000_hw *hw = &adapter->hw; |
|
4417 bool link_active = false; |
|
4418 s32 ret_val = 0; |
|
4419 |
|
4420 /* |
|
4421 * get_link_status is set on LSC (link status) interrupt or |
|
4422 * Rx sequence error interrupt. get_link_status will stay |
|
4423 * false until the check_for_link establishes link |
|
4424 * for copper adapters ONLY |
|
4425 */ |
|
4426 switch (hw->phy.media_type) { |
|
4427 case e1000_media_type_copper: |
|
4428 if (hw->mac.get_link_status) { |
|
4429 ret_val = hw->mac.ops.check_for_link(hw); |
|
4430 link_active = !hw->mac.get_link_status; |
|
4431 } else { |
|
4432 link_active = true; |
|
4433 } |
|
4434 break; |
|
4435 case e1000_media_type_fiber: |
|
4436 ret_val = hw->mac.ops.check_for_link(hw); |
|
4437 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
4438 break; |
|
4439 case e1000_media_type_internal_serdes: |
|
4440 ret_val = hw->mac.ops.check_for_link(hw); |
|
4441 link_active = adapter->hw.mac.serdes_has_link; |
|
4442 break; |
|
4443 default: |
|
4444 case e1000_media_type_unknown: |
|
4445 break; |
|
4446 } |
|
4447 |
|
4448 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && |
|
4449 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
4450 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ |
|
4451 e_info("Gigabit has been disabled, downgrading speed\n"); |
|
4452 } |
|
4453 |
|
4454 return link_active; |
|
4455 } |
|
4456 |
|
4457 static void e1000e_enable_receives(struct e1000_adapter *adapter) |
|
4458 { |
|
4459 /* make sure the receive unit is started */ |
|
4460 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4461 (adapter->flags & FLAG_RX_RESTART_NOW)) { |
|
4462 struct e1000_hw *hw = &adapter->hw; |
|
4463 u32 rctl = er32(RCTL); |
|
4464 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
4465 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
4466 } |
|
4467 } |
|
4468 |
|
4469 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
|
4470 { |
|
4471 struct e1000_hw *hw = &adapter->hw; |
|
4472 |
|
4473 /* |
|
4474 * With 82574 controllers, PHY needs to be checked periodically |
|
4475 * for hung state and reset, if two calls return true |
|
4476 */ |
|
4477 if (e1000_check_phy_82574(hw)) |
|
4478 adapter->phy_hang_count++; |
|
4479 else |
|
4480 adapter->phy_hang_count = 0; |
|
4481 |
|
4482 if (adapter->phy_hang_count > 1) { |
|
4483 adapter->phy_hang_count = 0; |
|
4484 schedule_work(&adapter->reset_task); |
|
4485 } |
|
4486 } |
|
4487 |
|
4488 /** |
|
4489 * e1000_watchdog - Timer Call-back |
|
4490 * @data: pointer to adapter cast into an unsigned long |
|
4491 **/ |
|
4492 static void e1000_watchdog(unsigned long data) |
|
4493 { |
|
4494 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4495 |
|
4496 /* Do the rest outside of interrupt context */ |
|
4497 schedule_work(&adapter->watchdog_task); |
|
4498 |
|
4499 /* TODO: make this use queue_delayed_work() */ |
|
4500 } |
|
4501 |
|
4502 static void e1000_watchdog_task(struct work_struct *work) |
|
4503 { |
|
4504 struct e1000_adapter *adapter = container_of(work, |
|
4505 struct e1000_adapter, watchdog_task); |
|
4506 struct net_device *netdev = adapter->netdev; |
|
4507 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
4508 struct e1000_phy_info *phy = &adapter->hw.phy; |
|
4509 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4510 struct e1000_hw *hw = &adapter->hw; |
|
4511 u32 link, tctl; |
|
4512 |
|
4513 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4514 return; |
|
4515 |
|
4516 link = e1000e_has_link(adapter); |
|
4517 if ((adapter->ecdev && (ecdev_get_link(adapter->ecdev)) && link) |
|
4518 || (!adapter->ecdev && (netif_carrier_ok(netdev)) && link)) { |
|
4519 if (!adapter->ecdev) { |
|
4520 /* Cancel scheduled suspend requests. */ |
|
4521 pm_runtime_resume(netdev->dev.parent); |
|
4522 } |
|
4523 |
|
4524 e1000e_enable_receives(adapter); |
|
4525 goto link_up; |
|
4526 } |
|
4527 |
|
4528 if ((e1000e_enable_tx_pkt_filtering(hw)) && |
|
4529 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) |
|
4530 e1000_update_mng_vlan(adapter); |
|
4531 |
|
4532 if (link) { |
|
4533 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
4534 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
4535 bool txb2b = true; |
|
4536 |
|
4537 /* Cancel scheduled suspend requests. */ |
|
4538 pm_runtime_resume(netdev->dev.parent); |
|
4539 |
|
4540 /* update snapshot of PHY registers on LSC */ |
|
4541 e1000_phy_read_status(adapter); |
|
4542 mac->ops.get_link_up_info(&adapter->hw, |
|
4543 &adapter->link_speed, |
|
4544 &adapter->link_duplex); |
|
4545 e1000_print_link_info(adapter); |
|
4546 /* |
|
4547 * On supported PHYs, check for duplex mismatch only |
|
4548 * if link has autonegotiated at 10/100 half |
|
4549 */ |
|
4550 if ((hw->phy.type == e1000_phy_igp_3 || |
|
4551 hw->phy.type == e1000_phy_bm) && |
|
4552 (hw->mac.autoneg == true) && |
|
4553 (adapter->link_speed == SPEED_10 || |
|
4554 adapter->link_speed == SPEED_100) && |
|
4555 (adapter->link_duplex == HALF_DUPLEX)) { |
|
4556 u16 autoneg_exp; |
|
4557 |
|
4558 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); |
|
4559 |
|
4560 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) |
|
4561 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n"); |
|
4562 } |
|
4563 |
|
4564 /* adjust timeout factor according to speed/duplex */ |
|
4565 adapter->tx_timeout_factor = 1; |
|
4566 switch (adapter->link_speed) { |
|
4567 case SPEED_10: |
|
4568 txb2b = false; |
|
4569 adapter->tx_timeout_factor = 16; |
|
4570 break; |
|
4571 case SPEED_100: |
|
4572 txb2b = false; |
|
4573 adapter->tx_timeout_factor = 10; |
|
4574 break; |
|
4575 } |
|
4576 |
|
4577 /* |
|
4578 * workaround: re-program speed mode bit after |
|
4579 * link-up event |
|
4580 */ |
|
4581 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
|
4582 !txb2b) { |
|
4583 u32 tarc0; |
|
4584 tarc0 = er32(TARC(0)); |
|
4585 tarc0 &= ~SPEED_MODE_BIT; |
|
4586 ew32(TARC(0), tarc0); |
|
4587 } |
|
4588 |
|
4589 /* |
|
4590 * disable TSO for pcie and 10/100 speeds, to avoid |
|
4591 * some hardware issues |
|
4592 */ |
|
4593 if (!(adapter->flags & FLAG_TSO_FORCE)) { |
|
4594 switch (adapter->link_speed) { |
|
4595 case SPEED_10: |
|
4596 case SPEED_100: |
|
4597 e_info("10/100 speed: disabling TSO\n"); |
|
4598 netdev->features &= ~NETIF_F_TSO; |
|
4599 netdev->features &= ~NETIF_F_TSO6; |
|
4600 break; |
|
4601 case SPEED_1000: |
|
4602 netdev->features |= NETIF_F_TSO; |
|
4603 netdev->features |= NETIF_F_TSO6; |
|
4604 break; |
|
4605 default: |
|
4606 /* oops */ |
|
4607 break; |
|
4608 } |
|
4609 } |
|
4610 |
|
4611 /* |
|
4612 * enable transmits in the hardware, need to do this |
|
4613 * after setting TARC(0) |
|
4614 */ |
|
4615 tctl = er32(TCTL); |
|
4616 tctl |= E1000_TCTL_EN; |
|
4617 ew32(TCTL, tctl); |
|
4618 |
|
4619 /* |
|
4620 * Perform any post-link-up configuration before |
|
4621 * reporting link up. |
|
4622 */ |
|
4623 if (phy->ops.cfg_on_link_up) |
|
4624 phy->ops.cfg_on_link_up(hw); |
|
4625 |
|
4626 if (adapter->ecdev) |
|
4627 ecdev_set_link(adapter->ecdev, 1); |
|
4628 else |
|
4629 netif_carrier_on(netdev); |
|
4630 |
|
4631 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4632 mod_timer(&adapter->phy_info_timer, |
|
4633 round_jiffies(jiffies + 2 * HZ)); |
|
4634 } |
|
4635 } else { |
|
4636 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
4637 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
4638 adapter->link_speed = 0; |
|
4639 adapter->link_duplex = 0; |
|
4640 /* Link status message must follow this format */ |
|
4641 printk(KERN_INFO "e1000e: %s NIC Link is Down\n", |
|
4642 adapter->netdev->name); |
|
4643 if (adapter->ecdev) |
|
4644 ecdev_set_link(adapter->ecdev, 0); |
|
4645 else |
|
4646 netif_carrier_off(netdev); |
|
4647 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4648 mod_timer(&adapter->phy_info_timer, |
|
4649 round_jiffies(jiffies + 2 * HZ)); |
|
4650 |
|
4651 if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
|
4652 schedule_work(&adapter->reset_task); |
|
4653 else |
|
4654 pm_schedule_suspend(netdev->dev.parent, |
|
4655 LINK_TIMEOUT); |
|
4656 } |
|
4657 } |
|
4658 |
|
4659 link_up: |
|
4660 spin_lock(&adapter->stats64_lock); |
|
4661 e1000e_update_stats(adapter); |
|
4662 |
|
4663 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
4664 adapter->tpt_old = adapter->stats.tpt; |
|
4665 mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
4666 adapter->colc_old = adapter->stats.colc; |
|
4667 |
|
4668 adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
|
4669 adapter->gorc_old = adapter->stats.gorc; |
|
4670 adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
|
4671 adapter->gotc_old = adapter->stats.gotc; |
|
4672 spin_unlock(&adapter->stats64_lock); |
|
4673 |
|
4674 e1000e_update_adaptive(&adapter->hw); |
|
4675 |
|
4676 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
4677 || (!adapter->ecdev && (!netif_carrier_ok(netdev) && |
|
4678 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)))) { |
|
4679 /* |
|
4680 * We've lost link, so the controller stops DMA, |
|
4681 * but we've got queued Tx work that's never going |
|
4682 * to get done, so reset controller to flush Tx. |
|
4683 * (Do the reset outside of interrupt context). |
|
4684 */ |
|
4685 schedule_work(&adapter->reset_task); |
|
4686 /* return immediately since reset is imminent */ |
|
4687 return; |
|
4688 } |
|
4689 |
|
4690 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
4691 if (adapter->itr_setting == 4) { |
|
4692 /* |
|
4693 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
4694 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
4695 * everyone else is between 2000-8000. |
|
4696 */ |
|
4697 u32 goc = (adapter->gotc + adapter->gorc) / 10000; |
|
4698 u32 dif = (adapter->gotc > adapter->gorc ? |
|
4699 adapter->gotc - adapter->gorc : |
|
4700 adapter->gorc - adapter->gotc) / 10000; |
|
4701 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
4702 |
|
4703 ew32(ITR, 1000000000 / (itr * 256)); |
|
4704 } |
|
4705 |
|
4706 /* Cause software interrupt to ensure Rx ring is cleaned */ |
|
4707 if (adapter->msix_entries) |
|
4708 ew32(ICS, adapter->rx_ring->ims_val); |
|
4709 else |
|
4710 ew32(ICS, E1000_ICS_RXDMT0); |
|
4711 |
|
4712 /* flush pending descriptors to memory before detecting Tx hang */ |
|
4713 e1000e_flush_descriptors(adapter); |
|
4714 |
|
4715 /* Force detection of hung controller every watchdog period */ |
|
4716 adapter->detect_tx_hung = true; |
|
4717 |
|
4718 /* |
|
4719 * With 82571 controllers, LAA may be overwritten due to controller |
|
4720 * reset from the other port. Set the appropriate LAA in RAR[0] |
|
4721 */ |
|
4722 if (e1000e_get_laa_state_82571(hw)) |
|
4723 e1000e_rar_set(hw, adapter->hw.mac.addr, 0); |
|
4724 |
|
4725 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
|
4726 e1000e_check_82574_phy_workaround(adapter); |
|
4727 |
|
4728 /* Reset the timer */ |
|
4729 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4730 mod_timer(&adapter->watchdog_timer, |
|
4731 round_jiffies(jiffies + 2 * HZ)); |
|
4732 } |
|
4733 |
|
4734 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
4735 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
4736 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
4737 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
4738 #define E1000_TX_FLAGS_NO_FCS 0x00000010 |
|
4739 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
4740 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
4741 |
|
4742 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
4743 { |
|
4744 struct e1000_context_desc *context_desc; |
|
4745 struct e1000_buffer *buffer_info; |
|
4746 unsigned int i; |
|
4747 u32 cmd_length = 0; |
|
4748 u16 ipcse = 0, tucse, mss; |
|
4749 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
4750 |
|
4751 if (!skb_is_gso(skb)) |
|
4752 return 0; |
|
4753 |
|
4754 if (skb_header_cloned(skb)) { |
|
4755 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
4756 |
|
4757 if (err) |
|
4758 return err; |
|
4759 } |
|
4760 |
|
4761 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
4762 mss = skb_shinfo(skb)->gso_size; |
|
4763 if (skb->protocol == htons(ETH_P_IP)) { |
|
4764 struct iphdr *iph = ip_hdr(skb); |
|
4765 iph->tot_len = 0; |
|
4766 iph->check = 0; |
|
4767 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, |
|
4768 0, IPPROTO_TCP, 0); |
|
4769 cmd_length = E1000_TXD_CMD_IP; |
|
4770 ipcse = skb_transport_offset(skb) - 1; |
|
4771 } else if (skb_is_gso_v6(skb)) { |
|
4772 ipv6_hdr(skb)->payload_len = 0; |
|
4773 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
4774 &ipv6_hdr(skb)->daddr, |
|
4775 0, IPPROTO_TCP, 0); |
|
4776 ipcse = 0; |
|
4777 } |
|
4778 ipcss = skb_network_offset(skb); |
|
4779 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
4780 tucss = skb_transport_offset(skb); |
|
4781 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
4782 tucse = 0; |
|
4783 |
|
4784 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
4785 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
4786 |
|
4787 i = tx_ring->next_to_use; |
|
4788 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4789 buffer_info = &tx_ring->buffer_info[i]; |
|
4790 |
|
4791 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
4792 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
4793 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
4794 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
4795 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
4796 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
4797 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
4798 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
4799 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
4800 |
|
4801 buffer_info->time_stamp = jiffies; |
|
4802 buffer_info->next_to_watch = i; |
|
4803 |
|
4804 i++; |
|
4805 if (i == tx_ring->count) |
|
4806 i = 0; |
|
4807 tx_ring->next_to_use = i; |
|
4808 |
|
4809 return 1; |
|
4810 } |
|
4811 |
|
4812 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
4813 { |
|
4814 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4815 struct e1000_context_desc *context_desc; |
|
4816 struct e1000_buffer *buffer_info; |
|
4817 unsigned int i; |
|
4818 u8 css; |
|
4819 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
4820 __be16 protocol; |
|
4821 |
|
4822 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
4823 return 0; |
|
4824 |
|
4825 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
|
4826 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; |
|
4827 else |
|
4828 protocol = skb->protocol; |
|
4829 |
|
4830 switch (protocol) { |
|
4831 case cpu_to_be16(ETH_P_IP): |
|
4832 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
4833 cmd_len |= E1000_TXD_CMD_TCP; |
|
4834 break; |
|
4835 case cpu_to_be16(ETH_P_IPV6): |
|
4836 /* XXX not handling all IPV6 headers */ |
|
4837 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
4838 cmd_len |= E1000_TXD_CMD_TCP; |
|
4839 break; |
|
4840 default: |
|
4841 if (unlikely(net_ratelimit())) |
|
4842 e_warn("checksum_partial proto=%x!\n", |
|
4843 be16_to_cpu(protocol)); |
|
4844 break; |
|
4845 } |
|
4846 |
|
4847 css = skb_checksum_start_offset(skb); |
|
4848 |
|
4849 i = tx_ring->next_to_use; |
|
4850 buffer_info = &tx_ring->buffer_info[i]; |
|
4851 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4852 |
|
4853 context_desc->lower_setup.ip_config = 0; |
|
4854 context_desc->upper_setup.tcp_fields.tucss = css; |
|
4855 context_desc->upper_setup.tcp_fields.tucso = |
|
4856 css + skb->csum_offset; |
|
4857 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
4858 context_desc->tcp_seg_setup.data = 0; |
|
4859 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
4860 |
|
4861 buffer_info->time_stamp = jiffies; |
|
4862 buffer_info->next_to_watch = i; |
|
4863 |
|
4864 i++; |
|
4865 if (i == tx_ring->count) |
|
4866 i = 0; |
|
4867 tx_ring->next_to_use = i; |
|
4868 |
|
4869 return 1; |
|
4870 } |
|
4871 |
|
4872 #define E1000_MAX_PER_TXD 8192 |
|
4873 #define E1000_MAX_TXD_PWR 12 |
|
4874 |
|
4875 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb, |
|
4876 unsigned int first, unsigned int max_per_txd, |
|
4877 unsigned int nr_frags, unsigned int mss) |
|
4878 { |
|
4879 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4880 struct pci_dev *pdev = adapter->pdev; |
|
4881 struct e1000_buffer *buffer_info; |
|
4882 unsigned int len = skb_headlen(skb); |
|
4883 unsigned int offset = 0, size, count = 0, i; |
|
4884 unsigned int f, bytecount, segs; |
|
4885 |
|
4886 i = tx_ring->next_to_use; |
|
4887 |
|
4888 while (len) { |
|
4889 buffer_info = &tx_ring->buffer_info[i]; |
|
4890 size = min(len, max_per_txd); |
|
4891 |
|
4892 buffer_info->length = size; |
|
4893 buffer_info->time_stamp = jiffies; |
|
4894 buffer_info->next_to_watch = i; |
|
4895 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4896 skb->data + offset, |
|
4897 size, DMA_TO_DEVICE); |
|
4898 buffer_info->mapped_as_page = false; |
|
4899 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4900 goto dma_error; |
|
4901 |
|
4902 len -= size; |
|
4903 offset += size; |
|
4904 count++; |
|
4905 |
|
4906 if (len) { |
|
4907 i++; |
|
4908 if (i == tx_ring->count) |
|
4909 i = 0; |
|
4910 } |
|
4911 } |
|
4912 |
|
4913 for (f = 0; f < nr_frags; f++) { |
|
4914 const struct skb_frag_struct *frag; |
|
4915 |
|
4916 frag = &skb_shinfo(skb)->frags[f]; |
|
4917 len = skb_frag_size(frag); |
|
4918 offset = 0; |
|
4919 |
|
4920 while (len) { |
|
4921 i++; |
|
4922 if (i == tx_ring->count) |
|
4923 i = 0; |
|
4924 |
|
4925 buffer_info = &tx_ring->buffer_info[i]; |
|
4926 size = min(len, max_per_txd); |
|
4927 |
|
4928 buffer_info->length = size; |
|
4929 buffer_info->time_stamp = jiffies; |
|
4930 buffer_info->next_to_watch = i; |
|
4931 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
|
4932 offset, size, DMA_TO_DEVICE); |
|
4933 buffer_info->mapped_as_page = true; |
|
4934 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4935 goto dma_error; |
|
4936 |
|
4937 len -= size; |
|
4938 offset += size; |
|
4939 count++; |
|
4940 } |
|
4941 } |
|
4942 |
|
4943 segs = skb_shinfo(skb)->gso_segs ? : 1; |
|
4944 /* multiply data chunks by size of headers */ |
|
4945 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; |
|
4946 |
|
4947 tx_ring->buffer_info[i].skb = skb; |
|
4948 tx_ring->buffer_info[i].segs = segs; |
|
4949 tx_ring->buffer_info[i].bytecount = bytecount; |
|
4950 tx_ring->buffer_info[first].next_to_watch = i; |
|
4951 |
|
4952 return count; |
|
4953 |
|
4954 dma_error: |
|
4955 dev_err(&pdev->dev, "Tx DMA map failed\n"); |
|
4956 buffer_info->dma = 0; |
|
4957 if (count) |
|
4958 count--; |
|
4959 |
|
4960 while (count--) { |
|
4961 if (i == 0) |
|
4962 i += tx_ring->count; |
|
4963 i--; |
|
4964 buffer_info = &tx_ring->buffer_info[i]; |
|
4965 e1000_put_txbuf(tx_ring, buffer_info); |
|
4966 } |
|
4967 |
|
4968 return 0; |
|
4969 } |
|
4970 |
|
4971 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count) |
|
4972 { |
|
4973 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4974 struct e1000_tx_desc *tx_desc = NULL; |
|
4975 struct e1000_buffer *buffer_info; |
|
4976 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
4977 unsigned int i; |
|
4978 |
|
4979 if (tx_flags & E1000_TX_FLAGS_TSO) { |
|
4980 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
4981 E1000_TXD_CMD_TSE; |
|
4982 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4983 |
|
4984 if (tx_flags & E1000_TX_FLAGS_IPV4) |
|
4985 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
4986 } |
|
4987 |
|
4988 if (tx_flags & E1000_TX_FLAGS_CSUM) { |
|
4989 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
4990 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4991 } |
|
4992 |
|
4993 if (tx_flags & E1000_TX_FLAGS_VLAN) { |
|
4994 txd_lower |= E1000_TXD_CMD_VLE; |
|
4995 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
4996 } |
|
4997 |
|
4998 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
4999 txd_lower &= ~(E1000_TXD_CMD_IFCS); |
|
5000 |
|
5001 i = tx_ring->next_to_use; |
|
5002 |
|
5003 do { |
|
5004 buffer_info = &tx_ring->buffer_info[i]; |
|
5005 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
5006 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
5007 tx_desc->lower.data = |
|
5008 cpu_to_le32(txd_lower | buffer_info->length); |
|
5009 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
5010 |
|
5011 i++; |
|
5012 if (i == tx_ring->count) |
|
5013 i = 0; |
|
5014 } while (--count > 0); |
|
5015 |
|
5016 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
5017 |
|
5018 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ |
|
5019 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
5020 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); |
|
5021 |
|
5022 /* |
|
5023 * Force memory writes to complete before letting h/w |
|
5024 * know there are new descriptors to fetch. (Only |
|
5025 * applicable for weak-ordered memory model archs, |
|
5026 * such as IA-64). |
|
5027 */ |
|
5028 wmb(); |
|
5029 |
|
5030 tx_ring->next_to_use = i; |
|
5031 |
|
5032 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
5033 e1000e_update_tdt_wa(tx_ring, i); |
|
5034 else |
|
5035 writel(i, tx_ring->tail); |
|
5036 |
|
5037 /* |
|
5038 * we need this if more than one processor can write to our tail |
|
5039 * at a time, it synchronizes IO on IA64/Altix systems |
|
5040 */ |
|
5041 mmiowb(); |
|
5042 } |
|
5043 |
|
5044 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
5045 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
5046 struct sk_buff *skb) |
|
5047 { |
|
5048 struct e1000_hw *hw = &adapter->hw; |
|
5049 u16 length, offset; |
|
5050 |
|
5051 if (vlan_tx_tag_present(skb)) { |
|
5052 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
5053 (adapter->hw.mng_cookie.status & |
|
5054 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
|
5055 return 0; |
|
5056 } |
|
5057 |
|
5058 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) |
|
5059 return 0; |
|
5060 |
|
5061 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) |
|
5062 return 0; |
|
5063 |
|
5064 { |
|
5065 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); |
|
5066 struct udphdr *udp; |
|
5067 |
|
5068 if (ip->protocol != IPPROTO_UDP) |
|
5069 return 0; |
|
5070 |
|
5071 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
|
5072 if (ntohs(udp->dest) != 67) |
|
5073 return 0; |
|
5074 |
|
5075 offset = (u8 *)udp + 8 - skb->data; |
|
5076 length = skb->len - offset; |
|
5077 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); |
|
5078 } |
|
5079 |
|
5080 return 0; |
|
5081 } |
|
5082 |
|
5083 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5084 { |
|
5085 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5086 |
|
5087 netif_stop_queue(adapter->netdev); |
|
5088 /* |
|
5089 * Herbert's original patch had: |
|
5090 * smp_mb__after_netif_stop_queue(); |
|
5091 * but since that doesn't exist yet, just open code it. |
|
5092 */ |
|
5093 smp_mb(); |
|
5094 |
|
5095 /* |
|
5096 * We need to check again in a case another CPU has just |
|
5097 * made room available. |
|
5098 */ |
|
5099 if (e1000_desc_unused(tx_ring) < size) |
|
5100 return -EBUSY; |
|
5101 |
|
5102 /* A reprieve! */ |
|
5103 netif_start_queue(adapter->netdev); |
|
5104 ++adapter->restart_queue; |
|
5105 return 0; |
|
5106 } |
|
5107 |
|
5108 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5109 { |
|
5110 if (e1000_desc_unused(tx_ring) >= size) |
|
5111 return 0; |
|
5112 return __e1000_maybe_stop_tx(tx_ring, size); |
|
5113 } |
|
5114 |
|
5115 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1) |
|
5116 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
5117 struct net_device *netdev) |
|
5118 { |
|
5119 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5120 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
5121 unsigned int first; |
|
5122 unsigned int max_per_txd = E1000_MAX_PER_TXD; |
|
5123 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
5124 unsigned int tx_flags = 0; |
|
5125 unsigned int len = skb_headlen(skb); |
|
5126 unsigned int nr_frags; |
|
5127 unsigned int mss; |
|
5128 int count = 0; |
|
5129 int tso; |
|
5130 unsigned int f; |
|
5131 |
|
5132 if (test_bit(__E1000_DOWN, &adapter->state)) { |
|
5133 if (!adapter->ecdev) |
|
5134 dev_kfree_skb_any(skb); |
|
5135 return NETDEV_TX_OK; |
|
5136 } |
|
5137 |
|
5138 if (skb->len <= 0) { |
|
5139 if (!adapter->ecdev) |
|
5140 dev_kfree_skb_any(skb); |
|
5141 return NETDEV_TX_OK; |
|
5142 } |
|
5143 |
|
5144 mss = skb_shinfo(skb)->gso_size; |
|
5145 /* |
|
5146 * The controller does a simple calculation to |
|
5147 * make sure there is enough room in the FIFO before |
|
5148 * initiating the DMA for each buffer. The calc is: |
|
5149 * 4 = ceil(buffer len/mss). To make sure we don't |
|
5150 * overrun the FIFO, adjust the max buffer len if mss |
|
5151 * drops. |
|
5152 */ |
|
5153 if (mss) { |
|
5154 u8 hdr_len; |
|
5155 max_per_txd = min(mss << 2, max_per_txd); |
|
5156 max_txd_pwr = fls(max_per_txd) - 1; |
|
5157 |
|
5158 /* |
|
5159 * TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
5160 * points to just header, pull a few bytes of payload from |
|
5161 * frags into skb->data |
|
5162 */ |
|
5163 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
5164 /* |
|
5165 * we do this workaround for ES2LAN, but it is un-necessary, |
|
5166 * avoiding it could save a lot of cycles |
|
5167 */ |
|
5168 if (skb->data_len && (hdr_len == len)) { |
|
5169 unsigned int pull_size; |
|
5170 |
|
5171 pull_size = min_t(unsigned int, 4, skb->data_len); |
|
5172 if (!__pskb_pull_tail(skb, pull_size)) { |
|
5173 e_err("__pskb_pull_tail failed.\n"); |
|
5174 if (!adapter->ecdev) |
|
5175 dev_kfree_skb_any(skb); |
|
5176 return NETDEV_TX_OK; |
|
5177 } |
|
5178 len = skb_headlen(skb); |
|
5179 } |
|
5180 } |
|
5181 |
|
5182 /* reserve a descriptor for the offload context */ |
|
5183 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
5184 count++; |
|
5185 count++; |
|
5186 |
|
5187 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
5188 |
|
5189 nr_frags = skb_shinfo(skb)->nr_frags; |
|
5190 for (f = 0; f < nr_frags; f++) |
|
5191 count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
|
5192 max_txd_pwr); |
|
5193 |
|
5194 if (adapter->hw.mac.tx_pkt_filtering) |
|
5195 e1000_transfer_dhcp_info(adapter, skb); |
|
5196 |
|
5197 /* |
|
5198 * need: count + 2 desc gap to keep tail from touching |
|
5199 * head, otherwise try next time |
|
5200 */ |
|
5201 if (!adapter->ecdev && e1000_maybe_stop_tx(tx_ring, count + 2)) |
|
5202 return NETDEV_TX_BUSY; |
|
5203 |
|
5204 if (vlan_tx_tag_present(skb)) { |
|
5205 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
5206 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
5207 } |
|
5208 |
|
5209 first = tx_ring->next_to_use; |
|
5210 |
|
5211 tso = e1000_tso(tx_ring, skb); |
|
5212 if (tso < 0) { |
|
5213 if (!adapter->ecdev) |
|
5214 dev_kfree_skb_any(skb); |
|
5215 return NETDEV_TX_OK; |
|
5216 } |
|
5217 |
|
5218 if (tso) |
|
5219 tx_flags |= E1000_TX_FLAGS_TSO; |
|
5220 else if (e1000_tx_csum(tx_ring, skb)) |
|
5221 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
5222 |
|
5223 /* |
|
5224 * Old method was to assume IPv4 packet by default if TSO was enabled. |
|
5225 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
5226 * no longer assume, we must. |
|
5227 */ |
|
5228 if (skb->protocol == htons(ETH_P_IP)) |
|
5229 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
5230 |
|
5231 if (unlikely(skb->no_fcs)) |
|
5232 tx_flags |= E1000_TX_FLAGS_NO_FCS; |
|
5233 |
|
5234 /* if count is 0 then mapping error has occurred */ |
|
5235 count = e1000_tx_map(tx_ring, skb, first, max_per_txd, nr_frags, mss); |
|
5236 if (count) { |
|
5237 netdev_sent_queue(netdev, skb->len); |
|
5238 e1000_tx_queue(tx_ring, tx_flags, count); |
|
5239 /* Make sure there is space in the ring for the next send. */ |
|
5240 if (!adapter->ecdev) { |
|
5241 e1000_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 2); |
|
5242 } |
|
5243 |
|
5244 } else { |
|
5245 if (!adapter->ecdev) { |
|
5246 dev_kfree_skb_any(skb); |
|
5247 } |
|
5248 tx_ring->buffer_info[first].time_stamp = 0; |
|
5249 tx_ring->next_to_use = first; |
|
5250 } |
|
5251 |
|
5252 return NETDEV_TX_OK; |
|
5253 } |
|
5254 |
|
5255 /** |
|
5256 * e1000_tx_timeout - Respond to a Tx Hang |
|
5257 * @netdev: network interface device structure |
|
5258 **/ |
|
5259 static void e1000_tx_timeout(struct net_device *netdev) |
|
5260 { |
|
5261 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5262 |
|
5263 /* Do the reset outside of interrupt context */ |
|
5264 adapter->tx_timeout_count++; |
|
5265 schedule_work(&adapter->reset_task); |
|
5266 } |
|
5267 |
|
5268 static void e1000_reset_task(struct work_struct *work) |
|
5269 { |
|
5270 struct e1000_adapter *adapter; |
|
5271 adapter = container_of(work, struct e1000_adapter, reset_task); |
|
5272 |
|
5273 /* don't run the task if already down */ |
|
5274 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
5275 return; |
|
5276 |
|
5277 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
5278 (adapter->flags & FLAG_RX_RESTART_NOW))) { |
|
5279 e1000e_dump(adapter); |
|
5280 e_err("Reset adapter\n"); |
|
5281 } |
|
5282 e1000e_reinit_locked(adapter); |
|
5283 } |
|
5284 |
|
5285 /** |
|
5286 * e1000_get_stats64 - Get System Network Statistics |
|
5287 * @netdev: network interface device structure |
|
5288 * @stats: rtnl_link_stats64 pointer |
|
5289 * |
|
5290 * Returns the address of the device statistics structure. |
|
5291 **/ |
|
5292 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
|
5293 struct rtnl_link_stats64 *stats) |
|
5294 { |
|
5295 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5296 |
|
5297 memset(stats, 0, sizeof(struct rtnl_link_stats64)); |
|
5298 spin_lock(&adapter->stats64_lock); |
|
5299 e1000e_update_stats(adapter); |
|
5300 /* Fill out the OS statistics structure */ |
|
5301 stats->rx_bytes = adapter->stats.gorc; |
|
5302 stats->rx_packets = adapter->stats.gprc; |
|
5303 stats->tx_bytes = adapter->stats.gotc; |
|
5304 stats->tx_packets = adapter->stats.gptc; |
|
5305 stats->multicast = adapter->stats.mprc; |
|
5306 stats->collisions = adapter->stats.colc; |
|
5307 |
|
5308 /* Rx Errors */ |
|
5309 |
|
5310 /* |
|
5311 * RLEC on some newer hardware can be incorrect so build |
|
5312 * our own version based on RUC and ROC |
|
5313 */ |
|
5314 stats->rx_errors = adapter->stats.rxerrc + |
|
5315 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
5316 adapter->stats.ruc + adapter->stats.roc + |
|
5317 adapter->stats.cexterr; |
|
5318 stats->rx_length_errors = adapter->stats.ruc + |
|
5319 adapter->stats.roc; |
|
5320 stats->rx_crc_errors = adapter->stats.crcerrs; |
|
5321 stats->rx_frame_errors = adapter->stats.algnerrc; |
|
5322 stats->rx_missed_errors = adapter->stats.mpc; |
|
5323 |
|
5324 /* Tx Errors */ |
|
5325 stats->tx_errors = adapter->stats.ecol + |
|
5326 adapter->stats.latecol; |
|
5327 stats->tx_aborted_errors = adapter->stats.ecol; |
|
5328 stats->tx_window_errors = adapter->stats.latecol; |
|
5329 stats->tx_carrier_errors = adapter->stats.tncrs; |
|
5330 |
|
5331 /* Tx Dropped needs to be maintained elsewhere */ |
|
5332 |
|
5333 spin_unlock(&adapter->stats64_lock); |
|
5334 return stats; |
|
5335 } |
|
5336 |
|
5337 /** |
|
5338 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
5339 * @netdev: network interface device structure |
|
5340 * @new_mtu: new value for maximum frame size |
|
5341 * |
|
5342 * Returns 0 on success, negative on failure |
|
5343 **/ |
|
5344 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
5345 { |
|
5346 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5347 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
|
5348 |
|
5349 if (adapter->ecdev) |
|
5350 return -EBUSY; |
|
5351 |
|
5352 /* Jumbo frame support */ |
|
5353 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
|
5354 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { |
|
5355 e_err("Jumbo Frames not supported.\n"); |
|
5356 return -EINVAL; |
|
5357 } |
|
5358 |
|
5359 /* Supported frame sizes */ |
|
5360 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
|
5361 (max_frame > adapter->max_hw_frame_size)) { |
|
5362 e_err("Unsupported MTU setting\n"); |
|
5363 return -EINVAL; |
|
5364 } |
|
5365 |
|
5366 /* Jumbo frame workaround on 82579 requires CRC be stripped */ |
|
5367 if ((adapter->hw.mac.type == e1000_pch2lan) && |
|
5368 !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
|
5369 (new_mtu > ETH_DATA_LEN)) { |
|
5370 e_err("Jumbo Frames not supported on 82579 when CRC stripping is disabled.\n"); |
|
5371 return -EINVAL; |
|
5372 } |
|
5373 |
|
5374 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
5375 usleep_range(1000, 2000); |
|
5376 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
|
5377 adapter->max_frame_size = max_frame; |
|
5378 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
|
5379 netdev->mtu = new_mtu; |
|
5380 if (netif_running(netdev)) |
|
5381 e1000e_down(adapter); |
|
5382 |
|
5383 /* |
|
5384 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
5385 * means we reserve 2 more, this pushes us to allocate from the next |
|
5386 * larger slab size. |
|
5387 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
5388 * However with the new *_jumbo_rx* routines, jumbo receives will use |
|
5389 * fragmented skbs |
|
5390 */ |
|
5391 |
|
5392 if (max_frame <= 2048) |
|
5393 adapter->rx_buffer_len = 2048; |
|
5394 else |
|
5395 adapter->rx_buffer_len = 4096; |
|
5396 |
|
5397 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
5398 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
|
5399 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
|
5400 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
|
5401 + ETH_FCS_LEN; |
|
5402 |
|
5403 if (netif_running(netdev)) |
|
5404 e1000e_up(adapter); |
|
5405 else |
|
5406 e1000e_reset(adapter); |
|
5407 |
|
5408 clear_bit(__E1000_RESETTING, &adapter->state); |
|
5409 |
|
5410 return 0; |
|
5411 } |
|
5412 |
|
5413 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
5414 int cmd) |
|
5415 { |
|
5416 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5417 struct mii_ioctl_data *data = if_mii(ifr); |
|
5418 |
|
5419 if (adapter->hw.phy.media_type != e1000_media_type_copper) |
|
5420 return -EOPNOTSUPP; |
|
5421 |
|
5422 switch (cmd) { |
|
5423 case SIOCGMIIPHY: |
|
5424 data->phy_id = adapter->hw.phy.addr; |
|
5425 break; |
|
5426 case SIOCGMIIREG: |
|
5427 e1000_phy_read_status(adapter); |
|
5428 |
|
5429 switch (data->reg_num & 0x1F) { |
|
5430 case MII_BMCR: |
|
5431 data->val_out = adapter->phy_regs.bmcr; |
|
5432 break; |
|
5433 case MII_BMSR: |
|
5434 data->val_out = adapter->phy_regs.bmsr; |
|
5435 break; |
|
5436 case MII_PHYSID1: |
|
5437 data->val_out = (adapter->hw.phy.id >> 16); |
|
5438 break; |
|
5439 case MII_PHYSID2: |
|
5440 data->val_out = (adapter->hw.phy.id & 0xFFFF); |
|
5441 break; |
|
5442 case MII_ADVERTISE: |
|
5443 data->val_out = adapter->phy_regs.advertise; |
|
5444 break; |
|
5445 case MII_LPA: |
|
5446 data->val_out = adapter->phy_regs.lpa; |
|
5447 break; |
|
5448 case MII_EXPANSION: |
|
5449 data->val_out = adapter->phy_regs.expansion; |
|
5450 break; |
|
5451 case MII_CTRL1000: |
|
5452 data->val_out = adapter->phy_regs.ctrl1000; |
|
5453 break; |
|
5454 case MII_STAT1000: |
|
5455 data->val_out = adapter->phy_regs.stat1000; |
|
5456 break; |
|
5457 case MII_ESTATUS: |
|
5458 data->val_out = adapter->phy_regs.estatus; |
|
5459 break; |
|
5460 default: |
|
5461 return -EIO; |
|
5462 } |
|
5463 break; |
|
5464 case SIOCSMIIREG: |
|
5465 default: |
|
5466 return -EOPNOTSUPP; |
|
5467 } |
|
5468 return 0; |
|
5469 } |
|
5470 |
|
5471 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
5472 { |
|
5473 switch (cmd) { |
|
5474 case SIOCGMIIPHY: |
|
5475 case SIOCGMIIREG: |
|
5476 case SIOCSMIIREG: |
|
5477 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
5478 default: |
|
5479 return -EOPNOTSUPP; |
|
5480 } |
|
5481 } |
|
5482 |
|
5483 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
|
5484 { |
|
5485 struct e1000_hw *hw = &adapter->hw; |
|
5486 u32 i, mac_reg; |
|
5487 u16 phy_reg, wuc_enable; |
|
5488 int retval = 0; |
|
5489 |
|
5490 /* copy MAC RARs to PHY RARs */ |
|
5491 e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
|
5492 |
|
5493 retval = hw->phy.ops.acquire(hw); |
|
5494 if (retval) { |
|
5495 e_err("Could not acquire PHY\n"); |
|
5496 return retval; |
|
5497 } |
|
5498 |
|
5499 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ |
|
5500 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5501 if (retval) |
|
5502 goto release; |
|
5503 |
|
5504 /* copy MAC MTA to PHY MTA - only needed for pchlan */ |
|
5505 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
|
5506 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); |
|
5507 hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
|
5508 (u16)(mac_reg & 0xFFFF)); |
|
5509 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, |
|
5510 (u16)((mac_reg >> 16) & 0xFFFF)); |
|
5511 } |
|
5512 |
|
5513 /* configure PHY Rx Control register */ |
|
5514 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
|
5515 mac_reg = er32(RCTL); |
|
5516 if (mac_reg & E1000_RCTL_UPE) |
|
5517 phy_reg |= BM_RCTL_UPE; |
|
5518 if (mac_reg & E1000_RCTL_MPE) |
|
5519 phy_reg |= BM_RCTL_MPE; |
|
5520 phy_reg &= ~(BM_RCTL_MO_MASK); |
|
5521 if (mac_reg & E1000_RCTL_MO_3) |
|
5522 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) |
|
5523 << BM_RCTL_MO_SHIFT); |
|
5524 if (mac_reg & E1000_RCTL_BAM) |
|
5525 phy_reg |= BM_RCTL_BAM; |
|
5526 if (mac_reg & E1000_RCTL_PMCF) |
|
5527 phy_reg |= BM_RCTL_PMCF; |
|
5528 mac_reg = er32(CTRL); |
|
5529 if (mac_reg & E1000_CTRL_RFCE) |
|
5530 phy_reg |= BM_RCTL_RFCE; |
|
5531 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
|
5532 |
|
5533 /* enable PHY wakeup in MAC register */ |
|
5534 ew32(WUFC, wufc); |
|
5535 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); |
|
5536 |
|
5537 /* configure and enable PHY wakeup in PHY registers */ |
|
5538 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
|
5539 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); |
|
5540 |
|
5541 /* activate PHY wakeup */ |
|
5542 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
|
5543 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5544 if (retval) |
|
5545 e_err("Could not set PHY Host Wakeup bit\n"); |
|
5546 release: |
|
5547 hw->phy.ops.release(hw); |
|
5548 |
|
5549 return retval; |
|
5550 } |
|
5551 |
|
5552 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
|
5553 bool runtime) |
|
5554 { |
|
5555 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5556 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5557 struct e1000_hw *hw = &adapter->hw; |
|
5558 u32 ctrl, ctrl_ext, rctl, status; |
|
5559 /* Runtime suspend should only enable wakeup for link changes */ |
|
5560 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
|
5561 int retval = 0; |
|
5562 |
|
5563 netif_device_detach(netdev); |
|
5564 |
|
5565 if (netif_running(netdev)) { |
|
5566 int count = E1000_CHECK_RESET_COUNT; |
|
5567 |
|
5568 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
5569 usleep_range(10000, 20000); |
|
5570 |
|
5571 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
5572 e1000e_down(adapter); |
|
5573 e1000_free_irq(adapter); |
|
5574 } |
|
5575 e1000e_reset_interrupt_capability(adapter); |
|
5576 |
|
5577 retval = pci_save_state(pdev); |
|
5578 if (retval) |
|
5579 return retval; |
|
5580 |
|
5581 status = er32(STATUS); |
|
5582 if (status & E1000_STATUS_LU) |
|
5583 wufc &= ~E1000_WUFC_LNKC; |
|
5584 |
|
5585 if (wufc) { |
|
5586 e1000_setup_rctl(adapter); |
|
5587 e1000e_set_rx_mode(netdev); |
|
5588 |
|
5589 /* turn on all-multi mode if wake on multicast is enabled */ |
|
5590 if (wufc & E1000_WUFC_MC) { |
|
5591 rctl = er32(RCTL); |
|
5592 rctl |= E1000_RCTL_MPE; |
|
5593 ew32(RCTL, rctl); |
|
5594 } |
|
5595 |
|
5596 ctrl = er32(CTRL); |
|
5597 /* advertise wake from D3Cold */ |
|
5598 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
5599 /* phy power management enable */ |
|
5600 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
5601 ctrl |= E1000_CTRL_ADVD3WUC; |
|
5602 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) |
|
5603 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; |
|
5604 ew32(CTRL, ctrl); |
|
5605 |
|
5606 if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
|
5607 adapter->hw.phy.media_type == |
|
5608 e1000_media_type_internal_serdes) { |
|
5609 /* keep the laser running in D3 */ |
|
5610 ctrl_ext = er32(CTRL_EXT); |
|
5611 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
|
5612 ew32(CTRL_EXT, ctrl_ext); |
|
5613 } |
|
5614 |
|
5615 if (adapter->flags & FLAG_IS_ICH) |
|
5616 e1000_suspend_workarounds_ich8lan(&adapter->hw); |
|
5617 |
|
5618 /* Allow time for pending master requests to run */ |
|
5619 e1000e_disable_pcie_master(&adapter->hw); |
|
5620 |
|
5621 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5622 /* enable wakeup by the PHY */ |
|
5623 retval = e1000_init_phy_wakeup(adapter, wufc); |
|
5624 if (retval) |
|
5625 return retval; |
|
5626 } else { |
|
5627 /* enable wakeup by the MAC */ |
|
5628 ew32(WUFC, wufc); |
|
5629 ew32(WUC, E1000_WUC_PME_EN); |
|
5630 } |
|
5631 } else { |
|
5632 ew32(WUC, 0); |
|
5633 ew32(WUFC, 0); |
|
5634 } |
|
5635 |
|
5636 *enable_wake = !!wufc; |
|
5637 |
|
5638 /* make sure adapter isn't asleep if manageability is enabled */ |
|
5639 if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
|
5640 (hw->mac.ops.check_mng_mode(hw))) |
|
5641 *enable_wake = true; |
|
5642 |
|
5643 if (adapter->hw.phy.type == e1000_phy_igp_3) |
|
5644 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
|
5645 |
|
5646 /* |
|
5647 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
5648 * would have already happened in close and is redundant. |
|
5649 */ |
|
5650 e1000e_release_hw_control(adapter); |
|
5651 |
|
5652 pci_disable_device(pdev); |
|
5653 |
|
5654 return 0; |
|
5655 } |
|
5656 |
|
5657 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) |
|
5658 { |
|
5659 if (sleep && wake) { |
|
5660 pci_prepare_to_sleep(pdev); |
|
5661 return; |
|
5662 } |
|
5663 |
|
5664 pci_wake_from_d3(pdev, wake); |
|
5665 pci_set_power_state(pdev, PCI_D3hot); |
|
5666 } |
|
5667 |
|
5668 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, |
|
5669 bool wake) |
|
5670 { |
|
5671 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5672 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5673 |
|
5674 /* |
|
5675 * The pci-e switch on some quad port adapters will report a |
|
5676 * correctable error when the MAC transitions from D0 to D3. To |
|
5677 * prevent this we need to mask off the correctable errors on the |
|
5678 * downstream port of the pci-e switch. |
|
5679 */ |
|
5680 if (adapter->flags & FLAG_IS_QUAD_PORT) { |
|
5681 struct pci_dev *us_dev = pdev->bus->self; |
|
5682 int pos = pci_pcie_cap(us_dev); |
|
5683 u16 devctl; |
|
5684 |
|
5685 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); |
|
5686 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, |
|
5687 (devctl & ~PCI_EXP_DEVCTL_CERE)); |
|
5688 |
|
5689 e1000_power_off(pdev, sleep, wake); |
|
5690 |
|
5691 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); |
|
5692 } else { |
|
5693 e1000_power_off(pdev, sleep, wake); |
|
5694 } |
|
5695 } |
|
5696 |
|
5697 #ifdef CONFIG_PCIEASPM |
|
5698 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5699 { |
|
5700 pci_disable_link_state_locked(pdev, state); |
|
5701 } |
|
5702 #else |
|
5703 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5704 { |
|
5705 int pos; |
|
5706 u16 reg16; |
|
5707 |
|
5708 /* |
|
5709 * Both device and parent should have the same ASPM setting. |
|
5710 * Disable ASPM in downstream component first and then upstream. |
|
5711 */ |
|
5712 pos = pci_pcie_cap(pdev); |
|
5713 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16); |
|
5714 reg16 &= ~state; |
|
5715 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16); |
|
5716 |
|
5717 if (!pdev->bus->self) |
|
5718 return; |
|
5719 |
|
5720 pos = pci_pcie_cap(pdev->bus->self); |
|
5721 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16); |
|
5722 reg16 &= ~state; |
|
5723 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16); |
|
5724 } |
|
5725 #endif |
|
5726 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5727 { |
|
5728 dev_info(&pdev->dev, "Disabling ASPM %s %s\n", |
|
5729 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "", |
|
5730 (state & PCIE_LINK_STATE_L1) ? "L1" : ""); |
|
5731 |
|
5732 __e1000e_disable_aspm(pdev, state); |
|
5733 } |
|
5734 |
|
5735 #ifdef CONFIG_PM |
|
5736 static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
|
5737 { |
|
5738 return !!adapter->tx_ring->buffer_info; |
|
5739 } |
|
5740 |
|
5741 static int __e1000_resume(struct pci_dev *pdev) |
|
5742 { |
|
5743 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5744 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5745 struct e1000_hw *hw = &adapter->hw; |
|
5746 u16 aspm_disable_flag = 0; |
|
5747 u32 err; |
|
5748 |
|
5749 if (adapter->ecdev) |
|
5750 return -EBUSY; |
|
5751 |
|
5752 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
5753 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
5754 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5755 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
5756 if (aspm_disable_flag) |
|
5757 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
5758 |
|
5759 pci_set_power_state(pdev, PCI_D0); |
|
5760 pci_restore_state(pdev); |
|
5761 pci_save_state(pdev); |
|
5762 |
|
5763 e1000e_set_interrupt_capability(adapter); |
|
5764 if (netif_running(netdev)) { |
|
5765 err = e1000_request_irq(adapter); |
|
5766 if (err) |
|
5767 return err; |
|
5768 } |
|
5769 |
|
5770 if (hw->mac.type == e1000_pch2lan) |
|
5771 e1000_resume_workarounds_pchlan(&adapter->hw); |
|
5772 |
|
5773 e1000e_power_up_phy(adapter); |
|
5774 |
|
5775 /* report the system wakeup cause from S3/S4 */ |
|
5776 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5777 u16 phy_data; |
|
5778 |
|
5779 e1e_rphy(&adapter->hw, BM_WUS, &phy_data); |
|
5780 if (phy_data) { |
|
5781 e_info("PHY Wakeup cause - %s\n", |
|
5782 phy_data & E1000_WUS_EX ? "Unicast Packet" : |
|
5783 phy_data & E1000_WUS_MC ? "Multicast Packet" : |
|
5784 phy_data & E1000_WUS_BC ? "Broadcast Packet" : |
|
5785 phy_data & E1000_WUS_MAG ? "Magic Packet" : |
|
5786 phy_data & E1000_WUS_LNKC ? |
|
5787 "Link Status Change" : "other"); |
|
5788 } |
|
5789 e1e_wphy(&adapter->hw, BM_WUS, ~0); |
|
5790 } else { |
|
5791 u32 wus = er32(WUS); |
|
5792 if (wus) { |
|
5793 e_info("MAC Wakeup cause - %s\n", |
|
5794 wus & E1000_WUS_EX ? "Unicast Packet" : |
|
5795 wus & E1000_WUS_MC ? "Multicast Packet" : |
|
5796 wus & E1000_WUS_BC ? "Broadcast Packet" : |
|
5797 wus & E1000_WUS_MAG ? "Magic Packet" : |
|
5798 wus & E1000_WUS_LNKC ? "Link Status Change" : |
|
5799 "other"); |
|
5800 } |
|
5801 ew32(WUS, ~0); |
|
5802 } |
|
5803 |
|
5804 e1000e_reset(adapter); |
|
5805 |
|
5806 e1000_init_manageability_pt(adapter); |
|
5807 |
|
5808 if (netif_running(netdev)) |
|
5809 e1000e_up(adapter); |
|
5810 |
|
5811 netif_device_attach(netdev); |
|
5812 |
|
5813 /* |
|
5814 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5815 * is up. For all other cases, let the f/w know that the h/w is now |
|
5816 * under the control of the driver. |
|
5817 */ |
|
5818 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5819 e1000e_get_hw_control(adapter); |
|
5820 |
|
5821 return 0; |
|
5822 } |
|
5823 |
|
5824 #ifdef CONFIG_PM_SLEEP |
|
5825 static int e1000_suspend(struct device *dev) |
|
5826 { |
|
5827 struct pci_dev *pdev = to_pci_dev(dev); |
|
5828 int retval; |
|
5829 bool wake; |
|
5830 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5831 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5832 |
|
5833 if (adapter->ecdev) |
|
5834 return -EBUSY; |
|
5835 |
|
5836 retval = __e1000_shutdown(pdev, &wake, false); |
|
5837 if (!retval) |
|
5838 e1000_complete_shutdown(pdev, true, wake); |
|
5839 |
|
5840 return retval; |
|
5841 } |
|
5842 |
|
5843 static int e1000_resume(struct device *dev) |
|
5844 { |
|
5845 struct pci_dev *pdev = to_pci_dev(dev); |
|
5846 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5847 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5848 |
|
5849 if (e1000e_pm_ready(adapter)) |
|
5850 adapter->idle_check = true; |
|
5851 |
|
5852 return __e1000_resume(pdev); |
|
5853 } |
|
5854 #endif /* CONFIG_PM_SLEEP */ |
|
5855 |
|
5856 #ifdef CONFIG_PM_RUNTIME |
|
5857 static int e1000_runtime_suspend(struct device *dev) |
|
5858 { |
|
5859 struct pci_dev *pdev = to_pci_dev(dev); |
|
5860 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5861 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5862 |
|
5863 if (e1000e_pm_ready(adapter)) { |
|
5864 bool wake; |
|
5865 |
|
5866 __e1000_shutdown(pdev, &wake, true); |
|
5867 } |
|
5868 |
|
5869 return 0; |
|
5870 } |
|
5871 |
|
5872 static int e1000_idle(struct device *dev) |
|
5873 { |
|
5874 struct pci_dev *pdev = to_pci_dev(dev); |
|
5875 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5876 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5877 |
|
5878 if (!e1000e_pm_ready(adapter)) |
|
5879 return 0; |
|
5880 |
|
5881 if (adapter->idle_check) { |
|
5882 adapter->idle_check = false; |
|
5883 if (!e1000e_has_link(adapter)) |
|
5884 pm_schedule_suspend(dev, MSEC_PER_SEC); |
|
5885 } |
|
5886 |
|
5887 return -EBUSY; |
|
5888 } |
|
5889 |
|
5890 static int e1000_runtime_resume(struct device *dev) |
|
5891 { |
|
5892 struct pci_dev *pdev = to_pci_dev(dev); |
|
5893 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5894 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5895 |
|
5896 if (!e1000e_pm_ready(adapter)) |
|
5897 return 0; |
|
5898 |
|
5899 adapter->idle_check = !dev->power.runtime_auto; |
|
5900 return __e1000_resume(pdev); |
|
5901 } |
|
5902 #endif /* CONFIG_PM_RUNTIME */ |
|
5903 #endif /* CONFIG_PM */ |
|
5904 |
|
5905 static void e1000_shutdown(struct pci_dev *pdev) |
|
5906 { |
|
5907 bool wake = false; |
|
5908 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5909 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5910 |
|
5911 if (adapter->ecdev) |
|
5912 return; |
|
5913 |
|
5914 __e1000_shutdown(pdev, &wake, false); |
|
5915 |
|
5916 if (system_state == SYSTEM_POWER_OFF) |
|
5917 e1000_complete_shutdown(pdev, false, wake); |
|
5918 } |
|
5919 |
|
5920 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5921 |
|
5922 static irqreturn_t e1000_intr_msix(int irq, void *data) |
|
5923 { |
|
5924 struct net_device *netdev = data; |
|
5925 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5926 |
|
5927 if (adapter->msix_entries) { |
|
5928 int vector, msix_irq; |
|
5929 |
|
5930 vector = 0; |
|
5931 msix_irq = adapter->msix_entries[vector].vector; |
|
5932 disable_irq(msix_irq); |
|
5933 e1000_intr_msix_rx(msix_irq, netdev); |
|
5934 enable_irq(msix_irq); |
|
5935 |
|
5936 vector++; |
|
5937 msix_irq = adapter->msix_entries[vector].vector; |
|
5938 disable_irq(msix_irq); |
|
5939 e1000_intr_msix_tx(msix_irq, netdev); |
|
5940 enable_irq(msix_irq); |
|
5941 |
|
5942 vector++; |
|
5943 msix_irq = adapter->msix_entries[vector].vector; |
|
5944 disable_irq(msix_irq); |
|
5945 e1000_msix_other(msix_irq, netdev); |
|
5946 enable_irq(msix_irq); |
|
5947 } |
|
5948 |
|
5949 return IRQ_HANDLED; |
|
5950 } |
|
5951 |
|
5952 /* |
|
5953 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
5954 * without having to re-enable interrupts. It's not called while |
|
5955 * the interrupt routine is executing. |
|
5956 */ |
|
5957 static void e1000_netpoll(struct net_device *netdev) |
|
5958 { |
|
5959 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5960 |
|
5961 switch (adapter->int_mode) { |
|
5962 case E1000E_INT_MODE_MSIX: |
|
5963 e1000_intr_msix(adapter->pdev->irq, netdev); |
|
5964 break; |
|
5965 case E1000E_INT_MODE_MSI: |
|
5966 disable_irq(adapter->pdev->irq); |
|
5967 e1000_intr_msi(adapter->pdev->irq, netdev); |
|
5968 enable_irq(adapter->pdev->irq); |
|
5969 break; |
|
5970 default: /* E1000E_INT_MODE_LEGACY */ |
|
5971 disable_irq(adapter->pdev->irq); |
|
5972 e1000_intr(adapter->pdev->irq, netdev); |
|
5973 enable_irq(adapter->pdev->irq); |
|
5974 break; |
|
5975 } |
|
5976 } |
|
5977 #endif |
|
5978 |
|
5979 /** |
|
5980 * e1000_io_error_detected - called when PCI error is detected |
|
5981 * @pdev: Pointer to PCI device |
|
5982 * @state: The current pci connection state |
|
5983 * |
|
5984 * This function is called after a PCI bus error affecting |
|
5985 * this device has been detected. |
|
5986 */ |
|
5987 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
5988 pci_channel_state_t state) |
|
5989 { |
|
5990 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5991 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5992 |
|
5993 netif_device_detach(netdev); |
|
5994 |
|
5995 if (state == pci_channel_io_perm_failure) |
|
5996 return PCI_ERS_RESULT_DISCONNECT; |
|
5997 |
|
5998 if (netif_running(netdev)) |
|
5999 e1000e_down(adapter); |
|
6000 pci_disable_device(pdev); |
|
6001 |
|
6002 /* Request a slot slot reset. */ |
|
6003 return PCI_ERS_RESULT_NEED_RESET; |
|
6004 } |
|
6005 |
|
6006 /** |
|
6007 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
6008 * @pdev: Pointer to PCI device |
|
6009 * |
|
6010 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
6011 * resembles the first-half of the e1000_resume routine. |
|
6012 */ |
|
6013 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
6014 { |
|
6015 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6016 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6017 struct e1000_hw *hw = &adapter->hw; |
|
6018 u16 aspm_disable_flag = 0; |
|
6019 int err; |
|
6020 pci_ers_result_t result; |
|
6021 |
|
6022 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6023 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6024 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6025 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6026 if (aspm_disable_flag) |
|
6027 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6028 |
|
6029 err = pci_enable_device_mem(pdev); |
|
6030 if (err) { |
|
6031 dev_err(&pdev->dev, |
|
6032 "Cannot re-enable PCI device after reset.\n"); |
|
6033 result = PCI_ERS_RESULT_DISCONNECT; |
|
6034 } else { |
|
6035 pci_set_master(pdev); |
|
6036 pdev->state_saved = true; |
|
6037 pci_restore_state(pdev); |
|
6038 |
|
6039 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
6040 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
6041 |
|
6042 e1000e_reset(adapter); |
|
6043 ew32(WUS, ~0); |
|
6044 result = PCI_ERS_RESULT_RECOVERED; |
|
6045 } |
|
6046 |
|
6047 pci_cleanup_aer_uncorrect_error_status(pdev); |
|
6048 |
|
6049 return result; |
|
6050 } |
|
6051 |
|
6052 /** |
|
6053 * e1000_io_resume - called when traffic can start flowing again. |
|
6054 * @pdev: Pointer to PCI device |
|
6055 * |
|
6056 * This callback is called when the error recovery driver tells us that |
|
6057 * its OK to resume normal operation. Implementation resembles the |
|
6058 * second-half of the e1000_resume routine. |
|
6059 */ |
|
6060 static void e1000_io_resume(struct pci_dev *pdev) |
|
6061 { |
|
6062 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6063 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6064 |
|
6065 e1000_init_manageability_pt(adapter); |
|
6066 |
|
6067 if (netif_running(netdev)) { |
|
6068 if (e1000e_up(adapter)) { |
|
6069 dev_err(&pdev->dev, |
|
6070 "can't bring device back up after reset\n"); |
|
6071 return; |
|
6072 } |
|
6073 } |
|
6074 |
|
6075 netif_device_attach(netdev); |
|
6076 |
|
6077 /* |
|
6078 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
6079 * is up. For all other cases, let the f/w know that the h/w is now |
|
6080 * under the control of the driver. |
|
6081 */ |
|
6082 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6083 e1000e_get_hw_control(adapter); |
|
6084 |
|
6085 } |
|
6086 |
|
6087 static void e1000_print_device_info(struct e1000_adapter *adapter) |
|
6088 { |
|
6089 struct e1000_hw *hw = &adapter->hw; |
|
6090 struct net_device *netdev = adapter->netdev; |
|
6091 u32 ret_val; |
|
6092 u8 pba_str[E1000_PBANUM_LENGTH]; |
|
6093 |
|
6094 /* print bus type/speed/width info */ |
|
6095 e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
|
6096 /* bus width */ |
|
6097 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
|
6098 "Width x1"), |
|
6099 /* MAC address */ |
|
6100 netdev->dev_addr); |
|
6101 e_info("Intel(R) PRO/%s Network Connection\n", |
|
6102 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); |
|
6103 ret_val = e1000_read_pba_string_generic(hw, pba_str, |
|
6104 E1000_PBANUM_LENGTH); |
|
6105 if (ret_val) |
|
6106 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str)); |
|
6107 e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
|
6108 hw->mac.type, hw->phy.type, pba_str); |
|
6109 } |
|
6110 |
|
6111 static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
|
6112 { |
|
6113 struct e1000_hw *hw = &adapter->hw; |
|
6114 int ret_val; |
|
6115 u16 buf = 0; |
|
6116 |
|
6117 if (hw->mac.type != e1000_82573) |
|
6118 return; |
|
6119 |
|
6120 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); |
|
6121 le16_to_cpus(&buf); |
|
6122 if (!ret_val && (!(buf & (1 << 0)))) { |
|
6123 /* Deep Smart Power Down (DSPD) */ |
|
6124 dev_warn(&adapter->pdev->dev, |
|
6125 "Warning: detected DSPD enabled in EEPROM\n"); |
|
6126 } |
|
6127 } |
|
6128 |
|
6129 static int e1000_set_features(struct net_device *netdev, |
|
6130 netdev_features_t features) |
|
6131 { |
|
6132 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6133 netdev_features_t changed = features ^ netdev->features; |
|
6134 |
|
6135 if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) |
|
6136 adapter->flags |= FLAG_TSO_FORCE; |
|
6137 |
|
6138 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | |
|
6139 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | |
|
6140 NETIF_F_RXALL))) |
|
6141 return 0; |
|
6142 |
|
6143 if (changed & NETIF_F_RXFCS) { |
|
6144 if (features & NETIF_F_RXFCS) { |
|
6145 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6146 } else { |
|
6147 /* We need to take it back to defaults, which might mean |
|
6148 * stripping is still disabled at the adapter level. |
|
6149 */ |
|
6150 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING) |
|
6151 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
|
6152 else |
|
6153 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6154 } |
|
6155 } |
|
6156 |
|
6157 netdev->features = features; |
|
6158 |
|
6159 if (netif_running(netdev)) |
|
6160 e1000e_reinit_locked(adapter); |
|
6161 else |
|
6162 e1000e_reset(adapter); |
|
6163 |
|
6164 return 0; |
|
6165 } |
|
6166 |
|
6167 static const struct net_device_ops e1000e_netdev_ops = { |
|
6168 .ndo_open = e1000_open, |
|
6169 .ndo_stop = e1000_close, |
|
6170 .ndo_start_xmit = e1000_xmit_frame, |
|
6171 .ndo_get_stats64 = e1000e_get_stats64, |
|
6172 .ndo_set_rx_mode = e1000e_set_rx_mode, |
|
6173 .ndo_set_mac_address = e1000_set_mac, |
|
6174 .ndo_change_mtu = e1000_change_mtu, |
|
6175 .ndo_do_ioctl = e1000_ioctl, |
|
6176 .ndo_tx_timeout = e1000_tx_timeout, |
|
6177 .ndo_validate_addr = eth_validate_addr, |
|
6178 |
|
6179 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
6180 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
6181 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
6182 .ndo_poll_controller = e1000_netpoll, |
|
6183 #endif |
|
6184 .ndo_set_features = e1000_set_features, |
|
6185 }; |
|
6186 |
|
6187 /** |
|
6188 * ec_poll - Ethercat poll Routine |
|
6189 * @netdev: net device structure |
|
6190 * |
|
6191 * This function can never fail. |
|
6192 * |
|
6193 **/ |
|
6194 void ec_poll(struct net_device *netdev) |
|
6195 { |
|
6196 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6197 |
|
6198 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
6199 e1000_watchdog((unsigned long) adapter); |
|
6200 adapter->ec_watchdog_jiffies = jiffies; |
|
6201 } |
|
6202 |
|
6203 #ifdef CONFIG_PCI_MSI |
|
6204 e1000_intr_msi(0,netdev); |
|
6205 #else |
|
6206 e1000_intr(0,netdev); |
|
6207 #endif |
|
6208 } |
|
6209 |
|
6210 /** |
|
6211 * e1000_probe - Device Initialization Routine |
|
6212 * @pdev: PCI device information struct |
|
6213 * @ent: entry in e1000_pci_tbl |
|
6214 * |
|
6215 * Returns 0 on success, negative on failure |
|
6216 * |
|
6217 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
6218 * The OS initialization, configuring of the adapter private structure, |
|
6219 * and a hardware reset occur. |
|
6220 **/ |
|
6221 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
6222 const struct pci_device_id *ent) |
|
6223 { |
|
6224 struct net_device *netdev; |
|
6225 struct e1000_adapter *adapter; |
|
6226 struct e1000_hw *hw; |
|
6227 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; |
|
6228 resource_size_t mmio_start, mmio_len; |
|
6229 resource_size_t flash_start, flash_len; |
|
6230 static int cards_found; |
|
6231 u16 aspm_disable_flag = 0; |
|
6232 int i, err, pci_using_dac; |
|
6233 u16 eeprom_data = 0; |
|
6234 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
6235 |
|
6236 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6237 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6238 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6239 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6240 if (aspm_disable_flag) |
|
6241 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6242 |
|
6243 err = pci_enable_device_mem(pdev); |
|
6244 if (err) |
|
6245 return err; |
|
6246 |
|
6247 pci_using_dac = 0; |
|
6248 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
6249 if (!err) { |
|
6250 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
6251 if (!err) |
|
6252 pci_using_dac = 1; |
|
6253 } else { |
|
6254 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
6255 if (err) { |
|
6256 err = dma_set_coherent_mask(&pdev->dev, |
|
6257 DMA_BIT_MASK(32)); |
|
6258 if (err) { |
|
6259 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); |
|
6260 goto err_dma; |
|
6261 } |
|
6262 } |
|
6263 } |
|
6264 |
|
6265 err = pci_request_selected_regions_exclusive(pdev, |
|
6266 pci_select_bars(pdev, IORESOURCE_MEM), |
|
6267 e1000e_driver_name); |
|
6268 if (err) |
|
6269 goto err_pci_reg; |
|
6270 |
|
6271 /* AER (Advanced Error Reporting) hooks */ |
|
6272 pci_enable_pcie_error_reporting(pdev); |
|
6273 |
|
6274 pci_set_master(pdev); |
|
6275 /* PCI config space info */ |
|
6276 err = pci_save_state(pdev); |
|
6277 if (err) |
|
6278 goto err_alloc_etherdev; |
|
6279 |
|
6280 err = -ENOMEM; |
|
6281 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
6282 if (!netdev) |
|
6283 goto err_alloc_etherdev; |
|
6284 |
|
6285 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
6286 |
|
6287 netdev->irq = pdev->irq; |
|
6288 |
|
6289 pci_set_drvdata(pdev, netdev); |
|
6290 adapter = netdev_priv(netdev); |
|
6291 hw = &adapter->hw; |
|
6292 adapter->netdev = netdev; |
|
6293 adapter->pdev = pdev; |
|
6294 adapter->ei = ei; |
|
6295 adapter->pba = ei->pba; |
|
6296 adapter->flags = ei->flags; |
|
6297 adapter->flags2 = ei->flags2; |
|
6298 adapter->hw.adapter = adapter; |
|
6299 adapter->hw.mac.type = ei->mac; |
|
6300 adapter->max_hw_frame_size = ei->max_hw_frame_size; |
|
6301 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
|
6302 |
|
6303 mmio_start = pci_resource_start(pdev, 0); |
|
6304 mmio_len = pci_resource_len(pdev, 0); |
|
6305 |
|
6306 err = -EIO; |
|
6307 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
6308 if (!adapter->hw.hw_addr) |
|
6309 goto err_ioremap; |
|
6310 |
|
6311 if ((adapter->flags & FLAG_HAS_FLASH) && |
|
6312 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
6313 flash_start = pci_resource_start(pdev, 1); |
|
6314 flash_len = pci_resource_len(pdev, 1); |
|
6315 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
6316 if (!adapter->hw.flash_address) |
|
6317 goto err_flashmap; |
|
6318 } |
|
6319 |
|
6320 /* construct the net_device struct */ |
|
6321 netdev->netdev_ops = &e1000e_netdev_ops; |
|
6322 e1000e_set_ethtool_ops(netdev); |
|
6323 netdev->watchdog_timeo = 5 * HZ; |
|
6324 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
6325 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
|
6326 |
|
6327 netdev->mem_start = mmio_start; |
|
6328 netdev->mem_end = mmio_start + mmio_len; |
|
6329 |
|
6330 adapter->bd_number = cards_found++; |
|
6331 |
|
6332 e1000e_check_options(adapter); |
|
6333 |
|
6334 /* setup adapter struct */ |
|
6335 err = e1000_sw_init(adapter); |
|
6336 if (err) |
|
6337 goto err_sw_init; |
|
6338 |
|
6339 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
|
6340 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
|
6341 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
|
6342 |
|
6343 err = ei->get_variants(adapter); |
|
6344 if (err) |
|
6345 goto err_hw_init; |
|
6346 |
|
6347 if ((adapter->flags & FLAG_IS_ICH) && |
|
6348 (adapter->flags & FLAG_READ_ONLY_NVM)) |
|
6349 e1000e_write_protect_nvm_ich8lan(&adapter->hw); |
|
6350 |
|
6351 hw->mac.ops.get_bus_info(&adapter->hw); |
|
6352 |
|
6353 adapter->hw.phy.autoneg_wait_to_complete = 0; |
|
6354 |
|
6355 /* Copper options */ |
|
6356 if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
|
6357 adapter->hw.phy.mdix = AUTO_ALL_MODES; |
|
6358 adapter->hw.phy.disable_polarity_correction = 0; |
|
6359 adapter->hw.phy.ms_type = e1000_ms_hw_default; |
|
6360 } |
|
6361 |
|
6362 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw)) |
|
6363 e_info("PHY reset is blocked due to SOL/IDER session.\n"); |
|
6364 |
|
6365 /* Set initial default active device features */ |
|
6366 netdev->features = (NETIF_F_SG | |
|
6367 NETIF_F_HW_VLAN_RX | |
|
6368 NETIF_F_HW_VLAN_TX | |
|
6369 NETIF_F_TSO | |
|
6370 NETIF_F_TSO6 | |
|
6371 NETIF_F_RXHASH | |
|
6372 NETIF_F_RXCSUM | |
|
6373 NETIF_F_HW_CSUM); |
|
6374 |
|
6375 /* Set user-changeable features (subset of all device features) */ |
|
6376 netdev->hw_features = netdev->features; |
|
6377 netdev->hw_features |= NETIF_F_RXFCS; |
|
6378 netdev->priv_flags |= IFF_SUPP_NOFCS; |
|
6379 netdev->hw_features |= NETIF_F_RXALL; |
|
6380 |
|
6381 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
6382 netdev->features |= NETIF_F_HW_VLAN_FILTER; |
|
6383 |
|
6384 netdev->vlan_features |= (NETIF_F_SG | |
|
6385 NETIF_F_TSO | |
|
6386 NETIF_F_TSO6 | |
|
6387 NETIF_F_HW_CSUM); |
|
6388 |
|
6389 netdev->priv_flags |= IFF_UNICAST_FLT; |
|
6390 |
|
6391 if (pci_using_dac) { |
|
6392 netdev->features |= NETIF_F_HIGHDMA; |
|
6393 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
6394 } |
|
6395 |
|
6396 if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
|
6397 adapter->flags |= FLAG_MNG_PT_ENABLED; |
|
6398 |
|
6399 /* |
|
6400 * before reading the NVM, reset the controller to |
|
6401 * put the device in a known good starting state |
|
6402 */ |
|
6403 adapter->hw.mac.ops.reset_hw(&adapter->hw); |
|
6404 |
|
6405 /* |
|
6406 * systems with ASPM and others may see the checksum fail on the first |
|
6407 * attempt. Let's give it a few tries |
|
6408 */ |
|
6409 for (i = 0;; i++) { |
|
6410 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) |
|
6411 break; |
|
6412 if (i == 2) { |
|
6413 e_err("The NVM Checksum Is Not Valid\n"); |
|
6414 err = -EIO; |
|
6415 goto err_eeprom; |
|
6416 } |
|
6417 } |
|
6418 |
|
6419 e1000_eeprom_checks(adapter); |
|
6420 |
|
6421 /* copy the MAC address */ |
|
6422 if (e1000e_read_mac_addr(&adapter->hw)) |
|
6423 e_err("NVM Read Error while reading MAC address\n"); |
|
6424 |
|
6425 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6426 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6427 |
|
6428 if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
6429 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr); |
|
6430 err = -EIO; |
|
6431 goto err_eeprom; |
|
6432 } |
|
6433 |
|
6434 init_timer(&adapter->watchdog_timer); |
|
6435 adapter->watchdog_timer.function = e1000_watchdog; |
|
6436 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
6437 |
|
6438 init_timer(&adapter->phy_info_timer); |
|
6439 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
6440 adapter->phy_info_timer.data = (unsigned long) adapter; |
|
6441 |
|
6442 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
6443 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); |
|
6444 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
|
6445 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); |
|
6446 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
|
6447 |
|
6448 /* Initialize link parameters. User can change them with ethtool */ |
|
6449 adapter->hw.mac.autoneg = 1; |
|
6450 adapter->fc_autoneg = true; |
|
6451 adapter->hw.fc.requested_mode = e1000_fc_default; |
|
6452 adapter->hw.fc.current_mode = e1000_fc_default; |
|
6453 adapter->hw.phy.autoneg_advertised = 0x2f; |
|
6454 |
|
6455 /* ring size defaults */ |
|
6456 adapter->rx_ring->count = 256; |
|
6457 adapter->tx_ring->count = 256; |
|
6458 |
|
6459 /* |
|
6460 * Initial Wake on LAN setting - If APM wake is enabled in |
|
6461 * the EEPROM, enable the ACPI Magic Packet filter |
|
6462 */ |
|
6463 if (adapter->flags & FLAG_APME_IN_WUC) { |
|
6464 /* APME bit in EEPROM is mapped to WUC.APME */ |
|
6465 eeprom_data = er32(WUC); |
|
6466 eeprom_apme_mask = E1000_WUC_APME; |
|
6467 if ((hw->mac.type > e1000_ich10lan) && |
|
6468 (eeprom_data & E1000_WUC_PHY_WAKE)) |
|
6469 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
|
6470 } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
|
6471 if (adapter->flags & FLAG_APME_CHECK_PORT_B && |
|
6472 (adapter->hw.bus.func == 1)) |
|
6473 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B, |
|
6474 1, &eeprom_data); |
|
6475 else |
|
6476 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A, |
|
6477 1, &eeprom_data); |
|
6478 } |
|
6479 |
|
6480 /* fetch WoL from EEPROM */ |
|
6481 if (eeprom_data & eeprom_apme_mask) |
|
6482 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
6483 |
|
6484 /* |
|
6485 * now that we have the eeprom settings, apply the special cases |
|
6486 * where the eeprom may be wrong or the board simply won't support |
|
6487 * wake on lan on a particular port |
|
6488 */ |
|
6489 if (!(adapter->flags & FLAG_HAS_WOL)) |
|
6490 adapter->eeprom_wol = 0; |
|
6491 |
|
6492 /* initialize the wol settings based on the eeprom settings */ |
|
6493 adapter->wol = adapter->eeprom_wol; |
|
6494 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
6495 |
|
6496 /* save off EEPROM version number */ |
|
6497 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
|
6498 |
|
6499 /* reset the hardware with the new settings */ |
|
6500 e1000e_reset(adapter); |
|
6501 |
|
6502 /* |
|
6503 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
6504 * is up. For all other cases, let the f/w know that the h/w is now |
|
6505 * under the control of the driver. |
|
6506 */ |
|
6507 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6508 e1000e_get_hw_control(adapter); |
|
6509 |
|
6510 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
6511 if (adapter->ecdev) { |
|
6512 if (ecdev_open(adapter->ecdev)) { |
|
6513 ecdev_withdraw(adapter->ecdev); |
|
6514 goto err_register; |
|
6515 } |
|
6516 } else { |
|
6517 strlcpy(netdev->name, "eth%d", sizeof(netdev->name)); |
|
6518 err = register_netdev(netdev); |
|
6519 if (err) |
|
6520 goto err_register; |
|
6521 |
|
6522 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
6523 netif_carrier_off(netdev); |
|
6524 } |
|
6525 |
|
6526 e1000_print_device_info(adapter); |
|
6527 |
|
6528 if (pci_dev_run_wake(pdev)) |
|
6529 pm_runtime_put_noidle(&pdev->dev); |
|
6530 |
|
6531 return 0; |
|
6532 |
|
6533 err_register: |
|
6534 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6535 e1000e_release_hw_control(adapter); |
|
6536 err_eeprom: |
|
6537 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw)) |
|
6538 e1000_phy_hw_reset(&adapter->hw); |
|
6539 err_hw_init: |
|
6540 kfree(adapter->tx_ring); |
|
6541 kfree(adapter->rx_ring); |
|
6542 err_sw_init: |
|
6543 if (adapter->hw.flash_address) |
|
6544 iounmap(adapter->hw.flash_address); |
|
6545 e1000e_reset_interrupt_capability(adapter); |
|
6546 err_flashmap: |
|
6547 iounmap(adapter->hw.hw_addr); |
|
6548 err_ioremap: |
|
6549 free_netdev(netdev); |
|
6550 err_alloc_etherdev: |
|
6551 pci_release_selected_regions(pdev, |
|
6552 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6553 err_pci_reg: |
|
6554 err_dma: |
|
6555 pci_disable_device(pdev); |
|
6556 return err; |
|
6557 } |
|
6558 |
|
6559 /** |
|
6560 * e1000_remove - Device Removal Routine |
|
6561 * @pdev: PCI device information struct |
|
6562 * |
|
6563 * e1000_remove is called by the PCI subsystem to alert the driver |
|
6564 * that it should release a PCI device. The could be caused by a |
|
6565 * Hot-Plug event, or because the driver is going to be removed from |
|
6566 * memory. |
|
6567 **/ |
|
6568 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
6569 { |
|
6570 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6571 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6572 bool down = test_bit(__E1000_DOWN, &adapter->state); |
|
6573 |
|
6574 /* |
|
6575 * The timers may be rescheduled, so explicitly disable them |
|
6576 * from being rescheduled. |
|
6577 */ |
|
6578 if (!down) |
|
6579 set_bit(__E1000_DOWN, &adapter->state); |
|
6580 del_timer_sync(&adapter->watchdog_timer); |
|
6581 del_timer_sync(&adapter->phy_info_timer); |
|
6582 |
|
6583 cancel_work_sync(&adapter->reset_task); |
|
6584 cancel_work_sync(&adapter->watchdog_task); |
|
6585 cancel_work_sync(&adapter->downshift_task); |
|
6586 cancel_work_sync(&adapter->update_phy_task); |
|
6587 cancel_work_sync(&adapter->print_hang_task); |
|
6588 |
|
6589 if (!(netdev->flags & IFF_UP)) |
|
6590 e1000_power_down_phy(adapter); |
|
6591 |
|
6592 /* Don't lie to e1000_close() down the road. */ |
|
6593 if (!down) |
|
6594 clear_bit(__E1000_DOWN, &adapter->state); |
|
6595 |
|
6596 if (adapter->ecdev) { |
|
6597 ecdev_close(adapter->ecdev); |
|
6598 ecdev_withdraw(adapter->ecdev); |
|
6599 } else { |
|
6600 unregister_netdev(netdev); |
|
6601 } |
|
6602 |
|
6603 if (pci_dev_run_wake(pdev)) |
|
6604 pm_runtime_get_noresume(&pdev->dev); |
|
6605 |
|
6606 /* |
|
6607 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
6608 * would have already happened in close and is redundant. |
|
6609 */ |
|
6610 e1000e_release_hw_control(adapter); |
|
6611 |
|
6612 e1000e_reset_interrupt_capability(adapter); |
|
6613 kfree(adapter->tx_ring); |
|
6614 kfree(adapter->rx_ring); |
|
6615 |
|
6616 iounmap(adapter->hw.hw_addr); |
|
6617 if (adapter->hw.flash_address) |
|
6618 iounmap(adapter->hw.flash_address); |
|
6619 pci_release_selected_regions(pdev, |
|
6620 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6621 |
|
6622 free_netdev(netdev); |
|
6623 |
|
6624 /* AER disable */ |
|
6625 pci_disable_pcie_error_reporting(pdev); |
|
6626 |
|
6627 pci_disable_device(pdev); |
|
6628 } |
|
6629 |
|
6630 /* PCI Error Recovery (ERS) */ |
|
6631 static struct pci_error_handlers e1000_err_handler = { |
|
6632 .error_detected = e1000_io_error_detected, |
|
6633 .slot_reset = e1000_io_slot_reset, |
|
6634 .resume = e1000_io_resume, |
|
6635 }; |
|
6636 |
|
6637 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
|
6638 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
|
6639 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, |
|
6640 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, |
|
6641 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, |
|
6642 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
|
6643 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, |
|
6644 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
|
6645 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, |
|
6646 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, |
|
6647 |
|
6648 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
|
6649 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, |
|
6650 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, |
|
6651 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, |
|
6652 |
|
6653 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
|
6654 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, |
|
6655 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, |
|
6656 |
|
6657 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
|
6658 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
|
6659 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
|
6660 |
|
6661 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
|
6662 board_80003es2lan }, |
|
6663 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), |
|
6664 board_80003es2lan }, |
|
6665 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), |
|
6666 board_80003es2lan }, |
|
6667 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), |
|
6668 board_80003es2lan }, |
|
6669 |
|
6670 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
|
6671 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, |
|
6672 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, |
|
6673 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, |
|
6674 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, |
|
6675 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, |
|
6676 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, |
|
6677 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
|
6678 |
|
6679 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
|
6680 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, |
|
6681 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, |
|
6682 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, |
|
6683 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, |
|
6684 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
|
6685 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
|
6686 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, |
|
6687 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, |
|
6688 |
|
6689 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, |
|
6690 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, |
|
6691 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, |
|
6692 |
|
6693 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
|
6694 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, |
|
6695 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
|
6696 |
|
6697 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
|
6698 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, |
|
6699 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, |
|
6700 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, |
|
6701 |
|
6702 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
|
6703 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, |
|
6704 |
|
6705 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ |
|
6706 }; |
|
6707 //MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
|
6708 |
|
6709 #ifdef CONFIG_PM |
|
6710 static const struct dev_pm_ops e1000_pm_ops = { |
|
6711 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume) |
|
6712 SET_RUNTIME_PM_OPS(e1000_runtime_suspend, |
|
6713 e1000_runtime_resume, e1000_idle) |
|
6714 }; |
|
6715 #endif |
|
6716 |
|
6717 /* PCI Device API Driver */ |
|
6718 static struct pci_driver e1000_driver = { |
|
6719 .name = e1000e_driver_name, |
|
6720 .id_table = e1000_pci_tbl, |
|
6721 .probe = e1000_probe, |
|
6722 .remove = __devexit_p(e1000_remove), |
|
6723 #ifdef CONFIG_PM |
|
6724 .driver = { |
|
6725 .pm = &e1000_pm_ops, |
|
6726 }, |
|
6727 #endif |
|
6728 .shutdown = e1000_shutdown, |
|
6729 .err_handler = &e1000_err_handler |
|
6730 }; |
|
6731 |
|
6732 /** |
|
6733 * e1000_init_module - Driver Registration Routine |
|
6734 * |
|
6735 * e1000_init_module is the first routine called when the driver is |
|
6736 * loaded. All it does is register with the PCI subsystem. |
|
6737 **/ |
|
6738 static int __init e1000_init_module(void) |
|
6739 { |
|
6740 int ret; |
|
6741 pr_info("EtherCAT-capable Intel(R) PRO/1000 Network Driver - %s\n", |
|
6742 e1000e_driver_version); |
|
6743 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n"); |
|
6744 ret = pci_register_driver(&e1000_driver); |
|
6745 |
|
6746 return ret; |
|
6747 } |
|
6748 module_init(e1000_init_module); |
|
6749 |
|
6750 /** |
|
6751 * e1000_exit_module - Driver Exit Cleanup Routine |
|
6752 * |
|
6753 * e1000_exit_module is called just before the driver is removed |
|
6754 * from memory. |
|
6755 **/ |
|
6756 static void __exit e1000_exit_module(void) |
|
6757 { |
|
6758 pci_unregister_driver(&e1000_driver); |
|
6759 } |
|
6760 module_exit(e1000_exit_module); |
|
6761 |
|
6762 |
|
6763 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
|
6764 MODULE_DESCRIPTION("Ethercat-capable Intel(R) PRO/1000 Network Driver"); |
|
6765 MODULE_LICENSE("GPL"); |
|
6766 MODULE_VERSION(DRV_VERSION); |
|
6767 |
|
6768 /* netdev.c */ |