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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 "e1000-3.6-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 "2.0.0" 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 [board_pch_lpt] = &e1000_pch_lpt_info, |
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85 }; |
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86 |
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87 struct e1000_reg_info { |
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88 u32 ofs; |
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89 char *name; |
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90 }; |
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91 |
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92 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */ |
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93 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */ |
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94 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */ |
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95 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */ |
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96 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */ |
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97 |
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98 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */ |
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99 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */ |
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100 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */ |
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101 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */ |
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102 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */ |
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103 |
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104 static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
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105 |
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106 /* General Registers */ |
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107 {E1000_CTRL, "CTRL"}, |
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108 {E1000_STATUS, "STATUS"}, |
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109 {E1000_CTRL_EXT, "CTRL_EXT"}, |
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110 |
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111 /* Interrupt Registers */ |
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112 {E1000_ICR, "ICR"}, |
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113 |
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114 /* Rx Registers */ |
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115 {E1000_RCTL, "RCTL"}, |
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116 {E1000_RDLEN(0), "RDLEN"}, |
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117 {E1000_RDH(0), "RDH"}, |
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118 {E1000_RDT(0), "RDT"}, |
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119 {E1000_RDTR, "RDTR"}, |
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120 {E1000_RXDCTL(0), "RXDCTL"}, |
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121 {E1000_ERT, "ERT"}, |
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122 {E1000_RDBAL(0), "RDBAL"}, |
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123 {E1000_RDBAH(0), "RDBAH"}, |
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124 {E1000_RDFH, "RDFH"}, |
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125 {E1000_RDFT, "RDFT"}, |
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126 {E1000_RDFHS, "RDFHS"}, |
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127 {E1000_RDFTS, "RDFTS"}, |
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128 {E1000_RDFPC, "RDFPC"}, |
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129 |
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130 /* Tx Registers */ |
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131 {E1000_TCTL, "TCTL"}, |
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132 {E1000_TDBAL(0), "TDBAL"}, |
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133 {E1000_TDBAH(0), "TDBAH"}, |
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134 {E1000_TDLEN(0), "TDLEN"}, |
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135 {E1000_TDH(0), "TDH"}, |
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136 {E1000_TDT(0), "TDT"}, |
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137 {E1000_TIDV, "TIDV"}, |
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138 {E1000_TXDCTL(0), "TXDCTL"}, |
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139 {E1000_TADV, "TADV"}, |
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140 {E1000_TARC(0), "TARC"}, |
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141 {E1000_TDFH, "TDFH"}, |
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142 {E1000_TDFT, "TDFT"}, |
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143 {E1000_TDFHS, "TDFHS"}, |
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144 {E1000_TDFTS, "TDFTS"}, |
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145 {E1000_TDFPC, "TDFPC"}, |
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146 |
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147 /* List Terminator */ |
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148 {0, NULL} |
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149 }; |
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150 |
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151 /* |
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152 * e1000_regdump - register printout routine |
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153 */ |
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154 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
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155 { |
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156 int n = 0; |
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157 char rname[16]; |
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158 u32 regs[8]; |
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159 |
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160 switch (reginfo->ofs) { |
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161 case E1000_RXDCTL(0): |
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162 for (n = 0; n < 2; n++) |
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163 regs[n] = __er32(hw, E1000_RXDCTL(n)); |
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164 break; |
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165 case E1000_TXDCTL(0): |
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166 for (n = 0; n < 2; n++) |
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167 regs[n] = __er32(hw, E1000_TXDCTL(n)); |
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168 break; |
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169 case E1000_TARC(0): |
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170 for (n = 0; n < 2; n++) |
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171 regs[n] = __er32(hw, E1000_TARC(n)); |
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172 break; |
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173 default: |
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174 pr_info("%-15s %08x\n", |
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175 reginfo->name, __er32(hw, reginfo->ofs)); |
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176 return; |
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177 } |
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178 |
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179 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); |
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180 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]); |
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181 } |
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182 |
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183 static void e1000e_dump_ps_pages(struct e1000_adapter *adapter, |
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184 struct e1000_buffer *bi) |
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185 { |
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186 int i; |
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187 struct e1000_ps_page *ps_page; |
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188 |
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189 for (i = 0; i < adapter->rx_ps_pages; i++) { |
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190 ps_page = &bi->ps_pages[i]; |
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191 |
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192 if (ps_page->page) { |
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193 pr_info("packet dump for ps_page %d:\n", i); |
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194 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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195 16, 1, page_address(ps_page->page), |
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196 PAGE_SIZE, true); |
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197 } |
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198 } |
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199 } |
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200 |
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201 /* |
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202 * e1000e_dump - Print registers, Tx-ring and Rx-ring |
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203 */ |
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204 static void e1000e_dump(struct e1000_adapter *adapter) |
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205 { |
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206 struct net_device *netdev = adapter->netdev; |
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207 struct e1000_hw *hw = &adapter->hw; |
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208 struct e1000_reg_info *reginfo; |
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209 struct e1000_ring *tx_ring = adapter->tx_ring; |
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210 struct e1000_tx_desc *tx_desc; |
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211 struct my_u0 { |
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212 __le64 a; |
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213 __le64 b; |
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214 } *u0; |
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215 struct e1000_buffer *buffer_info; |
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216 struct e1000_ring *rx_ring = adapter->rx_ring; |
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217 union e1000_rx_desc_packet_split *rx_desc_ps; |
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218 union e1000_rx_desc_extended *rx_desc; |
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219 struct my_u1 { |
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220 __le64 a; |
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221 __le64 b; |
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222 __le64 c; |
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223 __le64 d; |
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224 } *u1; |
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225 u32 staterr; |
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226 int i = 0; |
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227 |
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228 if (!netif_msg_hw(adapter)) |
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229 return; |
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230 |
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231 /* Print netdevice Info */ |
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232 if (netdev) { |
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233 dev_info(&adapter->pdev->dev, "Net device Info\n"); |
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234 pr_info("Device Name state trans_start last_rx\n"); |
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235 pr_info("%-15s %016lX %016lX %016lX\n", |
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236 netdev->name, netdev->state, netdev->trans_start, |
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237 netdev->last_rx); |
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238 } |
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239 |
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240 /* Print Registers */ |
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241 dev_info(&adapter->pdev->dev, "Register Dump\n"); |
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242 pr_info(" Register Name Value\n"); |
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243 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
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244 reginfo->name; reginfo++) { |
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245 e1000_regdump(hw, reginfo); |
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246 } |
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247 |
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248 /* Print Tx Ring Summary */ |
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249 if (!netdev || !netif_running(netdev)) |
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250 return; |
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251 |
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252 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
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253 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
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254 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
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255 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", |
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256 0, tx_ring->next_to_use, tx_ring->next_to_clean, |
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257 (unsigned long long)buffer_info->dma, |
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258 buffer_info->length, |
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259 buffer_info->next_to_watch, |
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260 (unsigned long long)buffer_info->time_stamp); |
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261 |
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262 /* Print Tx Ring */ |
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263 if (!netif_msg_tx_done(adapter)) |
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264 goto rx_ring_summary; |
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265 |
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266 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
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267 |
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268 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) |
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269 * |
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270 * Legacy Transmit Descriptor |
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271 * +--------------------------------------------------------------+ |
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272 * 0 | Buffer Address [63:0] (Reserved on Write Back) | |
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273 * +--------------------------------------------------------------+ |
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274 * 8 | Special | CSS | Status | CMD | CSO | Length | |
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275 * +--------------------------------------------------------------+ |
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276 * 63 48 47 36 35 32 31 24 23 16 15 0 |
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277 * |
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278 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload |
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279 * 63 48 47 40 39 32 31 16 15 8 7 0 |
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280 * +----------------------------------------------------------------+ |
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281 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | |
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282 * +----------------------------------------------------------------+ |
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283 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | |
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284 * +----------------------------------------------------------------+ |
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285 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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286 * |
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287 * Extended Data Descriptor (DTYP=0x1) |
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288 * +----------------------------------------------------------------+ |
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289 * 0 | Buffer Address [63:0] | |
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290 * +----------------------------------------------------------------+ |
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291 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | |
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292 * +----------------------------------------------------------------+ |
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293 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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294 */ |
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295 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n"); |
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296 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n"); |
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297 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n"); |
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298 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
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299 const char *next_desc; |
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300 tx_desc = E1000_TX_DESC(*tx_ring, i); |
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301 buffer_info = &tx_ring->buffer_info[i]; |
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302 u0 = (struct my_u0 *)tx_desc; |
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303 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
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304 next_desc = " NTC/U"; |
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305 else if (i == tx_ring->next_to_use) |
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306 next_desc = " NTU"; |
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307 else if (i == tx_ring->next_to_clean) |
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308 next_desc = " NTC"; |
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309 else |
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310 next_desc = ""; |
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311 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n", |
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312 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : |
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313 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), |
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314 i, |
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315 (unsigned long long)le64_to_cpu(u0->a), |
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316 (unsigned long long)le64_to_cpu(u0->b), |
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317 (unsigned long long)buffer_info->dma, |
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318 buffer_info->length, buffer_info->next_to_watch, |
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319 (unsigned long long)buffer_info->time_stamp, |
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320 buffer_info->skb, next_desc); |
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321 |
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322 if (netif_msg_pktdata(adapter) && buffer_info->skb) |
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323 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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324 16, 1, buffer_info->skb->data, |
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325 buffer_info->skb->len, true); |
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326 } |
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327 |
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328 /* Print Rx Ring Summary */ |
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329 rx_ring_summary: |
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330 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
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331 pr_info("Queue [NTU] [NTC]\n"); |
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332 pr_info(" %5d %5X %5X\n", |
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333 0, rx_ring->next_to_use, rx_ring->next_to_clean); |
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334 |
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335 /* Print Rx Ring */ |
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336 if (!netif_msg_rx_status(adapter)) |
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337 return; |
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338 |
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339 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
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340 switch (adapter->rx_ps_pages) { |
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341 case 1: |
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342 case 2: |
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343 case 3: |
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344 /* [Extended] Packet Split Receive Descriptor Format |
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345 * |
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346 * +-----------------------------------------------------+ |
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347 * 0 | Buffer Address 0 [63:0] | |
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348 * +-----------------------------------------------------+ |
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349 * 8 | Buffer Address 1 [63:0] | |
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350 * +-----------------------------------------------------+ |
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351 * 16 | Buffer Address 2 [63:0] | |
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352 * +-----------------------------------------------------+ |
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353 * 24 | Buffer Address 3 [63:0] | |
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354 * +-----------------------------------------------------+ |
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355 */ |
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356 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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357 /* [Extended] Receive Descriptor (Write-Back) Format |
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358 * |
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359 * 63 48 47 32 31 13 12 8 7 4 3 0 |
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360 * +------------------------------------------------------+ |
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361 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | |
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362 * | Checksum | Ident | | Queue | | Type | |
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363 * +------------------------------------------------------+ |
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364 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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365 * +------------------------------------------------------+ |
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366 * 63 48 47 32 31 20 19 0 |
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367 */ |
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368 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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369 for (i = 0; i < rx_ring->count; i++) { |
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370 const char *next_desc; |
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371 buffer_info = &rx_ring->buffer_info[i]; |
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372 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); |
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373 u1 = (struct my_u1 *)rx_desc_ps; |
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374 staterr = |
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375 le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
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376 |
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377 if (i == rx_ring->next_to_use) |
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378 next_desc = " NTU"; |
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379 else if (i == rx_ring->next_to_clean) |
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380 next_desc = " NTC"; |
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381 else |
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382 next_desc = ""; |
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383 |
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384 if (staterr & E1000_RXD_STAT_DD) { |
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385 /* Descriptor Done */ |
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386 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n", |
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387 "RWB", i, |
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388 (unsigned long long)le64_to_cpu(u1->a), |
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389 (unsigned long long)le64_to_cpu(u1->b), |
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390 (unsigned long long)le64_to_cpu(u1->c), |
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391 (unsigned long long)le64_to_cpu(u1->d), |
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392 buffer_info->skb, next_desc); |
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393 } else { |
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394 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n", |
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395 "R ", i, |
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396 (unsigned long long)le64_to_cpu(u1->a), |
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397 (unsigned long long)le64_to_cpu(u1->b), |
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398 (unsigned long long)le64_to_cpu(u1->c), |
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399 (unsigned long long)le64_to_cpu(u1->d), |
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400 (unsigned long long)buffer_info->dma, |
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401 buffer_info->skb, next_desc); |
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402 |
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403 if (netif_msg_pktdata(adapter)) |
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404 e1000e_dump_ps_pages(adapter, |
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405 buffer_info); |
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406 } |
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407 } |
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408 break; |
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409 default: |
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410 case 0: |
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411 /* Extended Receive Descriptor (Read) Format |
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412 * |
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413 * +-----------------------------------------------------+ |
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414 * 0 | Buffer Address [63:0] | |
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415 * +-----------------------------------------------------+ |
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416 * 8 | Reserved | |
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417 * +-----------------------------------------------------+ |
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418 */ |
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419 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n"); |
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420 /* Extended Receive Descriptor (Write-Back) Format |
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421 * |
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422 * 63 48 47 32 31 24 23 4 3 0 |
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423 * +------------------------------------------------------+ |
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424 * | RSS Hash | | | | |
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425 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | |
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426 * | Packet | IP | | | Type | |
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427 * | Checksum | Ident | | | | |
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428 * +------------------------------------------------------+ |
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429 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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430 * +------------------------------------------------------+ |
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431 * 63 48 47 32 31 20 19 0 |
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432 */ |
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433 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n"); |
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434 |
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435 for (i = 0; i < rx_ring->count; i++) { |
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436 const char *next_desc; |
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437 |
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438 buffer_info = &rx_ring->buffer_info[i]; |
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439 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
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440 u1 = (struct my_u1 *)rx_desc; |
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441 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
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442 |
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443 if (i == rx_ring->next_to_use) |
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444 next_desc = " NTU"; |
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445 else if (i == rx_ring->next_to_clean) |
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446 next_desc = " NTC"; |
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447 else |
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448 next_desc = ""; |
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449 |
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450 if (staterr & E1000_RXD_STAT_DD) { |
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451 /* Descriptor Done */ |
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452 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n", |
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453 "RWB", i, |
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454 (unsigned long long)le64_to_cpu(u1->a), |
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455 (unsigned long long)le64_to_cpu(u1->b), |
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456 buffer_info->skb, next_desc); |
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457 } else { |
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458 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n", |
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459 "R ", i, |
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460 (unsigned long long)le64_to_cpu(u1->a), |
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461 (unsigned long long)le64_to_cpu(u1->b), |
|
462 (unsigned long long)buffer_info->dma, |
|
463 buffer_info->skb, next_desc); |
|
464 |
|
465 if (netif_msg_pktdata(adapter) && |
|
466 buffer_info->skb) |
|
467 print_hex_dump(KERN_INFO, "", |
|
468 DUMP_PREFIX_ADDRESS, 16, |
|
469 1, |
|
470 buffer_info->skb->data, |
|
471 adapter->rx_buffer_len, |
|
472 true); |
|
473 } |
|
474 } |
|
475 } |
|
476 } |
|
477 |
|
478 /** |
|
479 * e1000_desc_unused - calculate if we have unused descriptors |
|
480 **/ |
|
481 static int e1000_desc_unused(struct e1000_ring *ring) |
|
482 { |
|
483 if (ring->next_to_clean > ring->next_to_use) |
|
484 return ring->next_to_clean - ring->next_to_use - 1; |
|
485 |
|
486 return ring->count + ring->next_to_clean - ring->next_to_use - 1; |
|
487 } |
|
488 |
|
489 /** |
|
490 * e1000_receive_skb - helper function to handle Rx indications |
|
491 * @adapter: board private structure |
|
492 * @status: descriptor status field as written by hardware |
|
493 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
494 * @skb: pointer to sk_buff to be indicated to stack |
|
495 **/ |
|
496 static void e1000_receive_skb(struct e1000_adapter *adapter, |
|
497 struct net_device *netdev, struct sk_buff *skb, |
|
498 u8 status, __le16 vlan) |
|
499 { |
|
500 u16 tag = le16_to_cpu(vlan); |
|
501 skb->protocol = eth_type_trans(skb, netdev); |
|
502 |
|
503 if (status & E1000_RXD_STAT_VP) |
|
504 __vlan_hwaccel_put_tag(skb, tag); |
|
505 |
|
506 napi_gro_receive(&adapter->napi, skb); |
|
507 } |
|
508 |
|
509 /** |
|
510 * e1000_rx_checksum - Receive Checksum Offload |
|
511 * @adapter: board private structure |
|
512 * @status_err: receive descriptor status and error fields |
|
513 * @csum: receive descriptor csum field |
|
514 * @sk_buff: socket buffer with received data |
|
515 **/ |
|
516 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
517 struct sk_buff *skb) |
|
518 { |
|
519 u16 status = (u16)status_err; |
|
520 u8 errors = (u8)(status_err >> 24); |
|
521 |
|
522 skb_checksum_none_assert(skb); |
|
523 |
|
524 /* Rx checksum disabled */ |
|
525 if (!(adapter->netdev->features & NETIF_F_RXCSUM)) |
|
526 return; |
|
527 |
|
528 /* Ignore Checksum bit is set */ |
|
529 if (status & E1000_RXD_STAT_IXSM) |
|
530 return; |
|
531 |
|
532 /* TCP/UDP checksum error bit or IP checksum error bit is set */ |
|
533 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) { |
|
534 /* let the stack verify checksum errors */ |
|
535 adapter->hw_csum_err++; |
|
536 return; |
|
537 } |
|
538 |
|
539 /* TCP/UDP Checksum has not been calculated */ |
|
540 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
541 return; |
|
542 |
|
543 /* It must be a TCP or UDP packet with a valid checksum */ |
|
544 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
545 adapter->hw_csum_good++; |
|
546 } |
|
547 |
|
548 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i) |
|
549 { |
|
550 struct e1000_adapter *adapter = rx_ring->adapter; |
|
551 struct e1000_hw *hw = &adapter->hw; |
|
552 s32 ret_val = __ew32_prepare(hw); |
|
553 |
|
554 writel(i, rx_ring->tail); |
|
555 |
|
556 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) { |
|
557 u32 rctl = er32(RCTL); |
|
558 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
559 e_err("ME firmware caused invalid RDT - resetting\n"); |
|
560 schedule_work(&adapter->reset_task); |
|
561 } |
|
562 } |
|
563 |
|
564 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i) |
|
565 { |
|
566 struct e1000_adapter *adapter = tx_ring->adapter; |
|
567 struct e1000_hw *hw = &adapter->hw; |
|
568 s32 ret_val = __ew32_prepare(hw); |
|
569 |
|
570 writel(i, tx_ring->tail); |
|
571 |
|
572 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) { |
|
573 u32 tctl = er32(TCTL); |
|
574 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
575 e_err("ME firmware caused invalid TDT - resetting\n"); |
|
576 schedule_work(&adapter->reset_task); |
|
577 } |
|
578 } |
|
579 |
|
580 /** |
|
581 * e1000_alloc_rx_buffers - Replace used receive buffers |
|
582 * @rx_ring: Rx descriptor ring |
|
583 **/ |
|
584 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring, |
|
585 int cleaned_count, gfp_t gfp) |
|
586 { |
|
587 struct e1000_adapter *adapter = rx_ring->adapter; |
|
588 struct net_device *netdev = adapter->netdev; |
|
589 struct pci_dev *pdev = adapter->pdev; |
|
590 union e1000_rx_desc_extended *rx_desc; |
|
591 struct e1000_buffer *buffer_info; |
|
592 struct sk_buff *skb; |
|
593 unsigned int i; |
|
594 unsigned int bufsz = adapter->rx_buffer_len; |
|
595 |
|
596 i = rx_ring->next_to_use; |
|
597 buffer_info = &rx_ring->buffer_info[i]; |
|
598 |
|
599 while (cleaned_count--) { |
|
600 skb = buffer_info->skb; |
|
601 if (skb) { |
|
602 skb_trim(skb, 0); |
|
603 goto map_skb; |
|
604 } |
|
605 |
|
606 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
607 if (!skb) { |
|
608 /* Better luck next round */ |
|
609 adapter->alloc_rx_buff_failed++; |
|
610 break; |
|
611 } |
|
612 |
|
613 buffer_info->skb = skb; |
|
614 map_skb: |
|
615 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
616 adapter->rx_buffer_len, |
|
617 DMA_FROM_DEVICE); |
|
618 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
619 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
620 adapter->rx_dma_failed++; |
|
621 break; |
|
622 } |
|
623 |
|
624 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
625 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
626 |
|
627 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
628 /* |
|
629 * Force memory writes to complete before letting h/w |
|
630 * know there are new descriptors to fetch. (Only |
|
631 * applicable for weak-ordered memory model archs, |
|
632 * such as IA-64). |
|
633 */ |
|
634 wmb(); |
|
635 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
636 e1000e_update_rdt_wa(rx_ring, i); |
|
637 else |
|
638 writel(i, rx_ring->tail); |
|
639 } |
|
640 i++; |
|
641 if (i == rx_ring->count) |
|
642 i = 0; |
|
643 buffer_info = &rx_ring->buffer_info[i]; |
|
644 } |
|
645 |
|
646 rx_ring->next_to_use = i; |
|
647 } |
|
648 |
|
649 /** |
|
650 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
651 * @rx_ring: Rx descriptor ring |
|
652 **/ |
|
653 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring, |
|
654 int cleaned_count, gfp_t gfp) |
|
655 { |
|
656 struct e1000_adapter *adapter = rx_ring->adapter; |
|
657 struct net_device *netdev = adapter->netdev; |
|
658 struct pci_dev *pdev = adapter->pdev; |
|
659 union e1000_rx_desc_packet_split *rx_desc; |
|
660 struct e1000_buffer *buffer_info; |
|
661 struct e1000_ps_page *ps_page; |
|
662 struct sk_buff *skb; |
|
663 unsigned int i, j; |
|
664 |
|
665 i = rx_ring->next_to_use; |
|
666 buffer_info = &rx_ring->buffer_info[i]; |
|
667 |
|
668 while (cleaned_count--) { |
|
669 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
670 |
|
671 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
672 ps_page = &buffer_info->ps_pages[j]; |
|
673 if (j >= adapter->rx_ps_pages) { |
|
674 /* all unused desc entries get hw null ptr */ |
|
675 rx_desc->read.buffer_addr[j + 1] = |
|
676 ~cpu_to_le64(0); |
|
677 continue; |
|
678 } |
|
679 if (!ps_page->page) { |
|
680 ps_page->page = alloc_page(gfp); |
|
681 if (!ps_page->page) { |
|
682 adapter->alloc_rx_buff_failed++; |
|
683 goto no_buffers; |
|
684 } |
|
685 ps_page->dma = dma_map_page(&pdev->dev, |
|
686 ps_page->page, |
|
687 0, PAGE_SIZE, |
|
688 DMA_FROM_DEVICE); |
|
689 if (dma_mapping_error(&pdev->dev, |
|
690 ps_page->dma)) { |
|
691 dev_err(&adapter->pdev->dev, |
|
692 "Rx DMA page map failed\n"); |
|
693 adapter->rx_dma_failed++; |
|
694 goto no_buffers; |
|
695 } |
|
696 } |
|
697 /* |
|
698 * Refresh the desc even if buffer_addrs |
|
699 * didn't change because each write-back |
|
700 * erases this info. |
|
701 */ |
|
702 rx_desc->read.buffer_addr[j + 1] = |
|
703 cpu_to_le64(ps_page->dma); |
|
704 } |
|
705 |
|
706 skb = __netdev_alloc_skb_ip_align(netdev, |
|
707 adapter->rx_ps_bsize0, |
|
708 gfp); |
|
709 |
|
710 if (!skb) { |
|
711 adapter->alloc_rx_buff_failed++; |
|
712 break; |
|
713 } |
|
714 |
|
715 buffer_info->skb = skb; |
|
716 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
717 adapter->rx_ps_bsize0, |
|
718 DMA_FROM_DEVICE); |
|
719 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
720 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
721 adapter->rx_dma_failed++; |
|
722 /* cleanup skb */ |
|
723 dev_kfree_skb_any(skb); |
|
724 buffer_info->skb = NULL; |
|
725 break; |
|
726 } |
|
727 |
|
728 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
729 |
|
730 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
731 /* |
|
732 * Force memory writes to complete before letting h/w |
|
733 * know there are new descriptors to fetch. (Only |
|
734 * applicable for weak-ordered memory model archs, |
|
735 * such as IA-64). |
|
736 */ |
|
737 wmb(); |
|
738 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
739 e1000e_update_rdt_wa(rx_ring, i << 1); |
|
740 else |
|
741 writel(i << 1, rx_ring->tail); |
|
742 } |
|
743 |
|
744 i++; |
|
745 if (i == rx_ring->count) |
|
746 i = 0; |
|
747 buffer_info = &rx_ring->buffer_info[i]; |
|
748 } |
|
749 |
|
750 no_buffers: |
|
751 rx_ring->next_to_use = i; |
|
752 } |
|
753 |
|
754 /** |
|
755 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
756 * @rx_ring: Rx descriptor ring |
|
757 * @cleaned_count: number of buffers to allocate this pass |
|
758 **/ |
|
759 |
|
760 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring, |
|
761 int cleaned_count, gfp_t gfp) |
|
762 { |
|
763 struct e1000_adapter *adapter = rx_ring->adapter; |
|
764 struct net_device *netdev = adapter->netdev; |
|
765 struct pci_dev *pdev = adapter->pdev; |
|
766 union e1000_rx_desc_extended *rx_desc; |
|
767 struct e1000_buffer *buffer_info; |
|
768 struct sk_buff *skb; |
|
769 unsigned int i; |
|
770 unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
|
771 |
|
772 i = rx_ring->next_to_use; |
|
773 buffer_info = &rx_ring->buffer_info[i]; |
|
774 |
|
775 while (cleaned_count--) { |
|
776 skb = buffer_info->skb; |
|
777 if (skb) { |
|
778 skb_trim(skb, 0); |
|
779 goto check_page; |
|
780 } |
|
781 |
|
782 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
783 if (unlikely(!skb)) { |
|
784 /* Better luck next round */ |
|
785 adapter->alloc_rx_buff_failed++; |
|
786 break; |
|
787 } |
|
788 |
|
789 buffer_info->skb = skb; |
|
790 check_page: |
|
791 /* allocate a new page if necessary */ |
|
792 if (!buffer_info->page) { |
|
793 buffer_info->page = alloc_page(gfp); |
|
794 if (unlikely(!buffer_info->page)) { |
|
795 adapter->alloc_rx_buff_failed++; |
|
796 break; |
|
797 } |
|
798 } |
|
799 |
|
800 if (!buffer_info->dma) |
|
801 buffer_info->dma = dma_map_page(&pdev->dev, |
|
802 buffer_info->page, 0, |
|
803 PAGE_SIZE, |
|
804 DMA_FROM_DEVICE); |
|
805 |
|
806 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
807 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
808 |
|
809 if (unlikely(++i == rx_ring->count)) |
|
810 i = 0; |
|
811 buffer_info = &rx_ring->buffer_info[i]; |
|
812 } |
|
813 |
|
814 if (likely(rx_ring->next_to_use != i)) { |
|
815 rx_ring->next_to_use = i; |
|
816 if (unlikely(i-- == 0)) |
|
817 i = (rx_ring->count - 1); |
|
818 |
|
819 /* Force memory writes to complete before letting h/w |
|
820 * know there are new descriptors to fetch. (Only |
|
821 * applicable for weak-ordered memory model archs, |
|
822 * such as IA-64). */ |
|
823 wmb(); |
|
824 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
825 e1000e_update_rdt_wa(rx_ring, i); |
|
826 else |
|
827 writel(i, rx_ring->tail); |
|
828 } |
|
829 } |
|
830 |
|
831 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss, |
|
832 struct sk_buff *skb) |
|
833 { |
|
834 if (netdev->features & NETIF_F_RXHASH) |
|
835 skb->rxhash = le32_to_cpu(rss); |
|
836 } |
|
837 |
|
838 /** |
|
839 * e1000_clean_rx_irq - Send received data up the network stack |
|
840 * @rx_ring: Rx descriptor ring |
|
841 * |
|
842 * the return value indicates whether actual cleaning was done, there |
|
843 * is no guarantee that everything was cleaned |
|
844 **/ |
|
845 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
846 int work_to_do) |
|
847 { |
|
848 struct e1000_adapter *adapter = rx_ring->adapter; |
|
849 struct net_device *netdev = adapter->netdev; |
|
850 struct pci_dev *pdev = adapter->pdev; |
|
851 struct e1000_hw *hw = &adapter->hw; |
|
852 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
853 struct e1000_buffer *buffer_info, *next_buffer; |
|
854 u32 length, staterr; |
|
855 unsigned int i; |
|
856 int cleaned_count = 0; |
|
857 bool cleaned = false; |
|
858 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
859 |
|
860 i = rx_ring->next_to_clean; |
|
861 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
862 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
863 buffer_info = &rx_ring->buffer_info[i]; |
|
864 |
|
865 while (staterr & E1000_RXD_STAT_DD) { |
|
866 struct sk_buff *skb; |
|
867 |
|
868 if (*work_done >= work_to_do) |
|
869 break; |
|
870 (*work_done)++; |
|
871 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
872 |
|
873 skb = buffer_info->skb; |
|
874 |
|
875 if (!adapter->ecdev) |
|
876 buffer_info->skb = NULL; |
|
877 |
|
878 prefetch(skb->data - NET_IP_ALIGN); |
|
879 |
|
880 i++; |
|
881 if (i == rx_ring->count) |
|
882 i = 0; |
|
883 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
884 prefetch(next_rxd); |
|
885 |
|
886 next_buffer = &rx_ring->buffer_info[i]; |
|
887 |
|
888 cleaned = true; |
|
889 cleaned_count++; |
|
890 dma_unmap_single(&pdev->dev, |
|
891 buffer_info->dma, |
|
892 adapter->rx_buffer_len, |
|
893 DMA_FROM_DEVICE); |
|
894 buffer_info->dma = 0; |
|
895 |
|
896 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
897 |
|
898 /* |
|
899 * !EOP means multiple descriptors were used to store a single |
|
900 * packet, if that's the case we need to toss it. In fact, we |
|
901 * need to toss every packet with the EOP bit clear and the |
|
902 * next frame that _does_ have the EOP bit set, as it is by |
|
903 * definition only a frame fragment |
|
904 */ |
|
905 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
|
906 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
907 |
|
908 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
909 /* All receives must fit into a single buffer */ |
|
910 e_dbg("Receive packet consumed multiple buffers\n"); |
|
911 /* recycle */ |
|
912 buffer_info->skb = skb; |
|
913 if (staterr & E1000_RXD_STAT_EOP) |
|
914 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
915 goto next_desc; |
|
916 } |
|
917 |
|
918 if (unlikely(!adapter->ecdev && |
|
919 (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
920 !(netdev->features & NETIF_F_RXALL))) { |
|
921 /* recycle */ |
|
922 buffer_info->skb = skb; |
|
923 goto next_desc; |
|
924 } |
|
925 |
|
926 /* adjust length to remove Ethernet CRC */ |
|
927 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
928 /* If configured to store CRC, don't subtract FCS, |
|
929 * but keep the FCS bytes out of the total_rx_bytes |
|
930 * counter |
|
931 */ |
|
932 if (netdev->features & NETIF_F_RXFCS) |
|
933 total_rx_bytes -= 4; |
|
934 else |
|
935 length -= 4; |
|
936 } |
|
937 |
|
938 total_rx_bytes += length; |
|
939 total_rx_packets++; |
|
940 |
|
941 /* |
|
942 * code added for copybreak, this should improve |
|
943 * performance for small packets with large amounts |
|
944 * of reassembly being done in the stack |
|
945 */ |
|
946 if (!adapter->ecdev && length < copybreak) { |
|
947 struct sk_buff *new_skb = |
|
948 netdev_alloc_skb_ip_align(netdev, length); |
|
949 if (new_skb) { |
|
950 skb_copy_to_linear_data_offset(new_skb, |
|
951 -NET_IP_ALIGN, |
|
952 (skb->data - |
|
953 NET_IP_ALIGN), |
|
954 (length + |
|
955 NET_IP_ALIGN)); |
|
956 /* save the skb in buffer_info as good */ |
|
957 buffer_info->skb = skb; |
|
958 skb = new_skb; |
|
959 } |
|
960 /* else just continue with the old one */ |
|
961 } |
|
962 /* end copybreak code */ |
|
963 skb_put(skb, length); |
|
964 |
|
965 /* Receive Checksum Offload */ |
|
966 e1000_rx_checksum(adapter, staterr, skb); |
|
967 |
|
968 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
969 |
|
970 if (adapter->ecdev) { |
|
971 ecdev_receive(adapter->ecdev, skb->data, length); |
|
972 adapter->ec_watchdog_jiffies = jiffies; |
|
973 } else { |
|
974 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
975 rx_desc->wb.upper.vlan); |
|
976 } |
|
977 |
|
978 next_desc: |
|
979 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
980 |
|
981 /* return some buffers to hardware, one at a time is too slow */ |
|
982 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
983 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
984 GFP_ATOMIC); |
|
985 cleaned_count = 0; |
|
986 } |
|
987 |
|
988 /* use prefetched values */ |
|
989 rx_desc = next_rxd; |
|
990 buffer_info = next_buffer; |
|
991 |
|
992 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
993 } |
|
994 rx_ring->next_to_clean = i; |
|
995 |
|
996 cleaned_count = e1000_desc_unused(rx_ring); |
|
997 if (cleaned_count) |
|
998 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
999 |
|
1000 adapter->total_rx_bytes += total_rx_bytes; |
|
1001 adapter->total_rx_packets += total_rx_packets; |
|
1002 return cleaned; |
|
1003 } |
|
1004 |
|
1005 static void e1000_put_txbuf(struct e1000_ring *tx_ring, |
|
1006 struct e1000_buffer *buffer_info) |
|
1007 { |
|
1008 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1009 |
|
1010 if (adapter->ecdev) { |
|
1011 return; |
|
1012 } |
|
1013 |
|
1014 if (buffer_info->dma) { |
|
1015 if (buffer_info->mapped_as_page) |
|
1016 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1017 buffer_info->length, DMA_TO_DEVICE); |
|
1018 else |
|
1019 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1020 buffer_info->length, DMA_TO_DEVICE); |
|
1021 buffer_info->dma = 0; |
|
1022 } |
|
1023 if (buffer_info->skb) { |
|
1024 dev_kfree_skb_any(buffer_info->skb); |
|
1025 buffer_info->skb = NULL; |
|
1026 } |
|
1027 buffer_info->time_stamp = 0; |
|
1028 } |
|
1029 |
|
1030 static void e1000_print_hw_hang(struct work_struct *work) |
|
1031 { |
|
1032 struct e1000_adapter *adapter = container_of(work, |
|
1033 struct e1000_adapter, |
|
1034 print_hang_task); |
|
1035 struct net_device *netdev = adapter->netdev; |
|
1036 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1037 unsigned int i = tx_ring->next_to_clean; |
|
1038 unsigned int eop = tx_ring->buffer_info[i].next_to_watch; |
|
1039 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1040 struct e1000_hw *hw = &adapter->hw; |
|
1041 u16 phy_status, phy_1000t_status, phy_ext_status; |
|
1042 u16 pci_status; |
|
1043 |
|
1044 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1045 return; |
|
1046 |
|
1047 if (!adapter->tx_hang_recheck && |
|
1048 (adapter->flags2 & FLAG2_DMA_BURST)) { |
|
1049 /* |
|
1050 * May be block on write-back, flush and detect again |
|
1051 * flush pending descriptor writebacks to memory |
|
1052 */ |
|
1053 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1054 /* execute the writes immediately */ |
|
1055 e1e_flush(); |
|
1056 /* |
|
1057 * Due to rare timing issues, write to TIDV again to ensure |
|
1058 * the write is successful |
|
1059 */ |
|
1060 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1061 /* execute the writes immediately */ |
|
1062 e1e_flush(); |
|
1063 adapter->tx_hang_recheck = true; |
|
1064 return; |
|
1065 } |
|
1066 /* Real hang detected */ |
|
1067 adapter->tx_hang_recheck = false; |
|
1068 if (!adapter->ecdev) { |
|
1069 netif_stop_queue(netdev); |
|
1070 } |
|
1071 |
|
1072 e1e_rphy(hw, PHY_STATUS, &phy_status); |
|
1073 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); |
|
1074 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); |
|
1075 |
|
1076 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
|
1077 |
|
1078 /* detected Hardware unit hang */ |
|
1079 e_err("Detected Hardware Unit Hang:\n" |
|
1080 " TDH <%x>\n" |
|
1081 " TDT <%x>\n" |
|
1082 " next_to_use <%x>\n" |
|
1083 " next_to_clean <%x>\n" |
|
1084 "buffer_info[next_to_clean]:\n" |
|
1085 " time_stamp <%lx>\n" |
|
1086 " next_to_watch <%x>\n" |
|
1087 " jiffies <%lx>\n" |
|
1088 " next_to_watch.status <%x>\n" |
|
1089 "MAC Status <%x>\n" |
|
1090 "PHY Status <%x>\n" |
|
1091 "PHY 1000BASE-T Status <%x>\n" |
|
1092 "PHY Extended Status <%x>\n" |
|
1093 "PCI Status <%x>\n", |
|
1094 readl(tx_ring->head), |
|
1095 readl(tx_ring->tail), |
|
1096 tx_ring->next_to_use, |
|
1097 tx_ring->next_to_clean, |
|
1098 tx_ring->buffer_info[eop].time_stamp, |
|
1099 eop, |
|
1100 jiffies, |
|
1101 eop_desc->upper.fields.status, |
|
1102 er32(STATUS), |
|
1103 phy_status, |
|
1104 phy_1000t_status, |
|
1105 phy_ext_status, |
|
1106 pci_status); |
|
1107 |
|
1108 /* Suggest workaround for known h/w issue */ |
|
1109 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE)) |
|
1110 e_err("Try turning off Tx pause (flow control) via ethtool\n"); |
|
1111 } |
|
1112 |
|
1113 /** |
|
1114 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
1115 * @tx_ring: Tx descriptor ring |
|
1116 * |
|
1117 * the return value indicates whether actual cleaning was done, there |
|
1118 * is no guarantee that everything was cleaned |
|
1119 **/ |
|
1120 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) |
|
1121 { |
|
1122 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1123 struct net_device *netdev = adapter->netdev; |
|
1124 struct e1000_hw *hw = &adapter->hw; |
|
1125 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
1126 struct e1000_buffer *buffer_info; |
|
1127 unsigned int i, eop; |
|
1128 unsigned int count = 0; |
|
1129 unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
|
1130 unsigned int bytes_compl = 0, pkts_compl = 0; |
|
1131 |
|
1132 i = tx_ring->next_to_clean; |
|
1133 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1134 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1135 |
|
1136 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
1137 (count < tx_ring->count)) { |
|
1138 bool cleaned = false; |
|
1139 rmb(); /* read buffer_info after eop_desc */ |
|
1140 for (; !cleaned; count++) { |
|
1141 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
1142 buffer_info = &tx_ring->buffer_info[i]; |
|
1143 cleaned = (i == eop); |
|
1144 |
|
1145 if (cleaned) { |
|
1146 total_tx_packets += buffer_info->segs; |
|
1147 total_tx_bytes += buffer_info->bytecount; |
|
1148 if (buffer_info->skb) { |
|
1149 bytes_compl += buffer_info->skb->len; |
|
1150 pkts_compl++; |
|
1151 } |
|
1152 } |
|
1153 |
|
1154 e1000_put_txbuf(tx_ring, buffer_info); |
|
1155 tx_desc->upper.data = 0; |
|
1156 |
|
1157 i++; |
|
1158 if (i == tx_ring->count) |
|
1159 i = 0; |
|
1160 } |
|
1161 |
|
1162 if (i == tx_ring->next_to_use) |
|
1163 break; |
|
1164 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1165 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1166 } |
|
1167 |
|
1168 tx_ring->next_to_clean = i; |
|
1169 |
|
1170 if (!adapter->ecdev) { |
|
1171 netdev_completed_queue(netdev, pkts_compl, bytes_compl); |
|
1172 } |
|
1173 |
|
1174 #define TX_WAKE_THRESHOLD 32 |
|
1175 if (!adapter->ecdev && count && netif_carrier_ok(netdev) && |
|
1176 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { |
|
1177 /* Make sure that anybody stopping the queue after this |
|
1178 * sees the new next_to_clean. |
|
1179 */ |
|
1180 smp_mb(); |
|
1181 |
|
1182 if (netif_queue_stopped(netdev) && |
|
1183 !(test_bit(__E1000_DOWN, &adapter->state))) { |
|
1184 netif_wake_queue(netdev); |
|
1185 ++adapter->restart_queue; |
|
1186 } |
|
1187 } |
|
1188 |
|
1189 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
1190 /* |
|
1191 * Detect a transmit hang in hardware, this serializes the |
|
1192 * check with the clearing of time_stamp and movement of i |
|
1193 */ |
|
1194 adapter->detect_tx_hung = false; |
|
1195 if (tx_ring->buffer_info[i].time_stamp && |
|
1196 time_after(jiffies, tx_ring->buffer_info[i].time_stamp |
|
1197 + (adapter->tx_timeout_factor * HZ)) && |
|
1198 !(er32(STATUS) & E1000_STATUS_TXOFF)) |
|
1199 schedule_work(&adapter->print_hang_task); |
|
1200 else |
|
1201 adapter->tx_hang_recheck = false; |
|
1202 } |
|
1203 adapter->total_tx_bytes += total_tx_bytes; |
|
1204 adapter->total_tx_packets += total_tx_packets; |
|
1205 return count < tx_ring->count; |
|
1206 } |
|
1207 |
|
1208 /** |
|
1209 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
1210 * @rx_ring: Rx descriptor ring |
|
1211 * |
|
1212 * the return value indicates whether actual cleaning was done, there |
|
1213 * is no guarantee that everything was cleaned |
|
1214 **/ |
|
1215 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, |
|
1216 int work_to_do) |
|
1217 { |
|
1218 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1219 struct e1000_hw *hw = &adapter->hw; |
|
1220 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
1221 struct net_device *netdev = adapter->netdev; |
|
1222 struct pci_dev *pdev = adapter->pdev; |
|
1223 struct e1000_buffer *buffer_info, *next_buffer; |
|
1224 struct e1000_ps_page *ps_page; |
|
1225 struct sk_buff *skb; |
|
1226 unsigned int i, j; |
|
1227 u32 length, staterr; |
|
1228 int cleaned_count = 0; |
|
1229 bool cleaned = false; |
|
1230 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1231 |
|
1232 i = rx_ring->next_to_clean; |
|
1233 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
1234 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1235 buffer_info = &rx_ring->buffer_info[i]; |
|
1236 |
|
1237 while (staterr & E1000_RXD_STAT_DD) { |
|
1238 if (*work_done >= work_to_do) |
|
1239 break; |
|
1240 (*work_done)++; |
|
1241 skb = buffer_info->skb; |
|
1242 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1243 |
|
1244 /* in the packet split case this is header only */ |
|
1245 prefetch(skb->data - NET_IP_ALIGN); |
|
1246 |
|
1247 i++; |
|
1248 if (i == rx_ring->count) |
|
1249 i = 0; |
|
1250 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
1251 prefetch(next_rxd); |
|
1252 |
|
1253 next_buffer = &rx_ring->buffer_info[i]; |
|
1254 |
|
1255 cleaned = true; |
|
1256 cleaned_count++; |
|
1257 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1258 adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
|
1259 buffer_info->dma = 0; |
|
1260 |
|
1261 /* see !EOP comment in other Rx routine */ |
|
1262 if (!(staterr & E1000_RXD_STAT_EOP)) |
|
1263 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
1264 |
|
1265 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
1266 e_dbg("Packet Split buffers didn't pick up the full packet\n"); |
|
1267 if (!adapter->ecdev) { |
|
1268 dev_kfree_skb_irq(skb); |
|
1269 } |
|
1270 if (staterr & E1000_RXD_STAT_EOP) |
|
1271 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1272 goto next_desc; |
|
1273 } |
|
1274 |
|
1275 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1276 !(netdev->features & NETIF_F_RXALL))) { |
|
1277 if (!adapter->ecdev) { |
|
1278 dev_kfree_skb_irq(skb); |
|
1279 } |
|
1280 goto next_desc; |
|
1281 } |
|
1282 |
|
1283 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
1284 |
|
1285 if (!length) { |
|
1286 e_dbg("Last part of the packet spanning multiple descriptors\n"); |
|
1287 if (!adapter->ecdev) { |
|
1288 dev_kfree_skb_irq(skb); |
|
1289 } |
|
1290 goto next_desc; |
|
1291 } |
|
1292 |
|
1293 /* Good Receive */ |
|
1294 skb_put(skb, length); |
|
1295 |
|
1296 { |
|
1297 /* |
|
1298 * this looks ugly, but it seems compiler issues make |
|
1299 * it more efficient than reusing j |
|
1300 */ |
|
1301 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
1302 |
|
1303 /* |
|
1304 * page alloc/put takes too long and effects small |
|
1305 * packet throughput, so unsplit small packets and |
|
1306 * save the alloc/put only valid in softirq (napi) |
|
1307 * context to call kmap_* |
|
1308 */ |
|
1309 if (l1 && (l1 <= copybreak) && |
|
1310 ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
1311 u8 *vaddr; |
|
1312 |
|
1313 ps_page = &buffer_info->ps_pages[0]; |
|
1314 |
|
1315 /* |
|
1316 * there is no documentation about how to call |
|
1317 * kmap_atomic, so we can't hold the mapping |
|
1318 * very long |
|
1319 */ |
|
1320 dma_sync_single_for_cpu(&pdev->dev, |
|
1321 ps_page->dma, |
|
1322 PAGE_SIZE, |
|
1323 DMA_FROM_DEVICE); |
|
1324 vaddr = kmap_atomic(ps_page->page); |
|
1325 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
1326 kunmap_atomic(vaddr); |
|
1327 dma_sync_single_for_device(&pdev->dev, |
|
1328 ps_page->dma, |
|
1329 PAGE_SIZE, |
|
1330 DMA_FROM_DEVICE); |
|
1331 |
|
1332 /* remove the CRC */ |
|
1333 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1334 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1335 l1 -= 4; |
|
1336 } |
|
1337 |
|
1338 skb_put(skb, l1); |
|
1339 goto copydone; |
|
1340 } /* if */ |
|
1341 } |
|
1342 |
|
1343 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1344 length = le16_to_cpu(rx_desc->wb.upper.length[j]); |
|
1345 if (!length) |
|
1346 break; |
|
1347 |
|
1348 ps_page = &buffer_info->ps_pages[j]; |
|
1349 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1350 DMA_FROM_DEVICE); |
|
1351 ps_page->dma = 0; |
|
1352 skb_fill_page_desc(skb, j, ps_page->page, 0, length); |
|
1353 ps_page->page = NULL; |
|
1354 skb->len += length; |
|
1355 skb->data_len += length; |
|
1356 skb->truesize += PAGE_SIZE; |
|
1357 } |
|
1358 |
|
1359 /* strip the ethernet crc, problem is we're using pages now so |
|
1360 * this whole operation can get a little cpu intensive |
|
1361 */ |
|
1362 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1363 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1364 pskb_trim(skb, skb->len - 4); |
|
1365 } |
|
1366 |
|
1367 copydone: |
|
1368 total_rx_bytes += skb->len; |
|
1369 total_rx_packets++; |
|
1370 |
|
1371 e1000_rx_checksum(adapter, staterr, skb); |
|
1372 |
|
1373 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1374 |
|
1375 if (rx_desc->wb.upper.header_status & |
|
1376 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
|
1377 adapter->rx_hdr_split++; |
|
1378 |
|
1379 if (adapter->ecdev) { |
|
1380 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1381 adapter->ec_watchdog_jiffies = jiffies; |
|
1382 } else { |
|
1383 e1000_receive_skb(adapter, netdev, skb, |
|
1384 staterr, rx_desc->wb.middle.vlan); |
|
1385 } |
|
1386 |
|
1387 next_desc: |
|
1388 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
1389 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
1390 |
|
1391 /* return some buffers to hardware, one at a time is too slow */ |
|
1392 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1393 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1394 GFP_ATOMIC); |
|
1395 cleaned_count = 0; |
|
1396 } |
|
1397 |
|
1398 /* use prefetched values */ |
|
1399 rx_desc = next_rxd; |
|
1400 buffer_info = next_buffer; |
|
1401 |
|
1402 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1403 } |
|
1404 rx_ring->next_to_clean = i; |
|
1405 |
|
1406 cleaned_count = e1000_desc_unused(rx_ring); |
|
1407 if (cleaned_count) |
|
1408 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1409 |
|
1410 adapter->total_rx_bytes += total_rx_bytes; |
|
1411 adapter->total_rx_packets += total_rx_packets; |
|
1412 return cleaned; |
|
1413 } |
|
1414 |
|
1415 /** |
|
1416 * e1000_consume_page - helper function |
|
1417 **/ |
|
1418 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
1419 u16 length) |
|
1420 { |
|
1421 bi->page = NULL; |
|
1422 skb->len += length; |
|
1423 skb->data_len += length; |
|
1424 skb->truesize += PAGE_SIZE; |
|
1425 } |
|
1426 |
|
1427 /** |
|
1428 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
1429 * @adapter: board private structure |
|
1430 * |
|
1431 * the return value indicates whether actual cleaning was done, there |
|
1432 * is no guarantee that everything was cleaned |
|
1433 **/ |
|
1434 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
1435 int work_to_do) |
|
1436 { |
|
1437 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1438 struct net_device *netdev = adapter->netdev; |
|
1439 struct pci_dev *pdev = adapter->pdev; |
|
1440 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
1441 struct e1000_buffer *buffer_info, *next_buffer; |
|
1442 u32 length, staterr; |
|
1443 unsigned int i; |
|
1444 int cleaned_count = 0; |
|
1445 bool cleaned = false; |
|
1446 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
1447 |
|
1448 i = rx_ring->next_to_clean; |
|
1449 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1450 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1451 buffer_info = &rx_ring->buffer_info[i]; |
|
1452 |
|
1453 while (staterr & E1000_RXD_STAT_DD) { |
|
1454 struct sk_buff *skb; |
|
1455 |
|
1456 if (*work_done >= work_to_do) |
|
1457 break; |
|
1458 (*work_done)++; |
|
1459 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1460 |
|
1461 skb = buffer_info->skb; |
|
1462 |
|
1463 if (!adapter->ecdev) |
|
1464 buffer_info->skb = NULL; |
|
1465 |
|
1466 ++i; |
|
1467 if (i == rx_ring->count) |
|
1468 i = 0; |
|
1469 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1470 prefetch(next_rxd); |
|
1471 |
|
1472 next_buffer = &rx_ring->buffer_info[i]; |
|
1473 |
|
1474 cleaned = true; |
|
1475 cleaned_count++; |
|
1476 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
|
1477 DMA_FROM_DEVICE); |
|
1478 buffer_info->dma = 0; |
|
1479 |
|
1480 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
1481 |
|
1482 /* errors is only valid for DD + EOP descriptors */ |
|
1483 if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
|
1484 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1485 !(netdev->features & NETIF_F_RXALL)))) { |
|
1486 /* recycle both page and skb */ |
|
1487 buffer_info->skb = skb; |
|
1488 /* an error means any chain goes out the window too */ |
|
1489 if (!adapter->ecdev && rx_ring->rx_skb_top) { |
|
1490 dev_kfree_skb_irq(rx_ring->rx_skb_top); |
|
1491 } |
|
1492 rx_ring->rx_skb_top = NULL; |
|
1493 goto next_desc; |
|
1494 } |
|
1495 |
|
1496 #define rxtop (rx_ring->rx_skb_top) |
|
1497 if (!(staterr & E1000_RXD_STAT_EOP)) { |
|
1498 /* this descriptor is only the beginning (or middle) */ |
|
1499 if (!rxtop) { |
|
1500 /* this is the beginning of a chain */ |
|
1501 rxtop = skb; |
|
1502 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
1503 0, length); |
|
1504 } else { |
|
1505 /* this is the middle of a chain */ |
|
1506 skb_fill_page_desc(rxtop, |
|
1507 skb_shinfo(rxtop)->nr_frags, |
|
1508 buffer_info->page, 0, length); |
|
1509 /* re-use the skb, only consumed the page */ |
|
1510 buffer_info->skb = skb; |
|
1511 } |
|
1512 e1000_consume_page(buffer_info, rxtop, length); |
|
1513 goto next_desc; |
|
1514 } else { |
|
1515 if (rxtop) { |
|
1516 /* end of the chain */ |
|
1517 skb_fill_page_desc(rxtop, |
|
1518 skb_shinfo(rxtop)->nr_frags, |
|
1519 buffer_info->page, 0, length); |
|
1520 /* re-use the current skb, we only consumed the |
|
1521 * page */ |
|
1522 buffer_info->skb = skb; |
|
1523 skb = rxtop; |
|
1524 rxtop = NULL; |
|
1525 e1000_consume_page(buffer_info, skb, length); |
|
1526 } else { |
|
1527 /* no chain, got EOP, this buf is the packet |
|
1528 * copybreak to save the put_page/alloc_page */ |
|
1529 if (length <= copybreak && |
|
1530 skb_tailroom(skb) >= length) { |
|
1531 u8 *vaddr; |
|
1532 vaddr = kmap_atomic(buffer_info->page); |
|
1533 memcpy(skb_tail_pointer(skb), vaddr, |
|
1534 length); |
|
1535 kunmap_atomic(vaddr); |
|
1536 /* re-use the page, so don't erase |
|
1537 * buffer_info->page */ |
|
1538 skb_put(skb, length); |
|
1539 } else { |
|
1540 skb_fill_page_desc(skb, 0, |
|
1541 buffer_info->page, 0, |
|
1542 length); |
|
1543 e1000_consume_page(buffer_info, skb, |
|
1544 length); |
|
1545 } |
|
1546 } |
|
1547 } |
|
1548 |
|
1549 /* Receive Checksum Offload */ |
|
1550 e1000_rx_checksum(adapter, staterr, skb); |
|
1551 |
|
1552 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1553 |
|
1554 /* probably a little skewed due to removing CRC */ |
|
1555 total_rx_bytes += skb->len; |
|
1556 total_rx_packets++; |
|
1557 |
|
1558 /* eth type trans needs skb->data to point to something */ |
|
1559 if (!adapter->ecdev && !pskb_may_pull(skb, ETH_HLEN)) { |
|
1560 e_err("pskb_may_pull failed.\n"); |
|
1561 dev_kfree_skb_irq(skb); |
|
1562 goto next_desc; |
|
1563 } |
|
1564 |
|
1565 if (adapter->ecdev) { |
|
1566 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1567 adapter->ec_watchdog_jiffies = jiffies; |
|
1568 } else { |
|
1569 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1570 rx_desc->wb.upper.vlan); |
|
1571 } |
|
1572 |
|
1573 |
|
1574 next_desc: |
|
1575 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1576 |
|
1577 /* return some buffers to hardware, one at a time is too slow */ |
|
1578 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
1579 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1580 GFP_ATOMIC); |
|
1581 cleaned_count = 0; |
|
1582 } |
|
1583 |
|
1584 /* use prefetched values */ |
|
1585 rx_desc = next_rxd; |
|
1586 buffer_info = next_buffer; |
|
1587 |
|
1588 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1589 } |
|
1590 rx_ring->next_to_clean = i; |
|
1591 |
|
1592 cleaned_count = e1000_desc_unused(rx_ring); |
|
1593 if (cleaned_count) |
|
1594 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1595 |
|
1596 adapter->total_rx_bytes += total_rx_bytes; |
|
1597 adapter->total_rx_packets += total_rx_packets; |
|
1598 return cleaned; |
|
1599 } |
|
1600 |
|
1601 /** |
|
1602 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1603 * @rx_ring: Rx descriptor ring |
|
1604 **/ |
|
1605 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring) |
|
1606 { |
|
1607 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1608 struct e1000_buffer *buffer_info; |
|
1609 struct e1000_ps_page *ps_page; |
|
1610 struct pci_dev *pdev = adapter->pdev; |
|
1611 unsigned int i, j; |
|
1612 |
|
1613 /* Free all the Rx ring sk_buffs */ |
|
1614 for (i = 0; i < rx_ring->count; i++) { |
|
1615 buffer_info = &rx_ring->buffer_info[i]; |
|
1616 if (buffer_info->dma) { |
|
1617 if (adapter->clean_rx == e1000_clean_rx_irq) |
|
1618 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1619 adapter->rx_buffer_len, |
|
1620 DMA_FROM_DEVICE); |
|
1621 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
|
1622 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
1623 PAGE_SIZE, |
|
1624 DMA_FROM_DEVICE); |
|
1625 else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
|
1626 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1627 adapter->rx_ps_bsize0, |
|
1628 DMA_FROM_DEVICE); |
|
1629 buffer_info->dma = 0; |
|
1630 } |
|
1631 |
|
1632 if (buffer_info->page) { |
|
1633 put_page(buffer_info->page); |
|
1634 buffer_info->page = NULL; |
|
1635 } |
|
1636 |
|
1637 if (buffer_info->skb) { |
|
1638 dev_kfree_skb(buffer_info->skb); |
|
1639 buffer_info->skb = NULL; |
|
1640 } |
|
1641 |
|
1642 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1643 ps_page = &buffer_info->ps_pages[j]; |
|
1644 if (!ps_page->page) |
|
1645 break; |
|
1646 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1647 DMA_FROM_DEVICE); |
|
1648 ps_page->dma = 0; |
|
1649 put_page(ps_page->page); |
|
1650 ps_page->page = NULL; |
|
1651 } |
|
1652 } |
|
1653 |
|
1654 /* there also may be some cached data from a chained receive */ |
|
1655 if (rx_ring->rx_skb_top) { |
|
1656 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1657 rx_ring->rx_skb_top = NULL; |
|
1658 } |
|
1659 |
|
1660 /* Zero out the descriptor ring */ |
|
1661 memset(rx_ring->desc, 0, rx_ring->size); |
|
1662 |
|
1663 rx_ring->next_to_clean = 0; |
|
1664 rx_ring->next_to_use = 0; |
|
1665 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1666 |
|
1667 writel(0, rx_ring->head); |
|
1668 if (rx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
1669 e1000e_update_rdt_wa(rx_ring, 0); |
|
1670 else |
|
1671 writel(0, rx_ring->tail); |
|
1672 } |
|
1673 |
|
1674 static void e1000e_downshift_workaround(struct work_struct *work) |
|
1675 { |
|
1676 struct e1000_adapter *adapter = container_of(work, |
|
1677 struct e1000_adapter, downshift_task); |
|
1678 |
|
1679 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1680 return; |
|
1681 |
|
1682 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
|
1683 } |
|
1684 |
|
1685 /** |
|
1686 * e1000_intr_msi - Interrupt Handler |
|
1687 * @irq: interrupt number |
|
1688 * @data: pointer to a network interface device structure |
|
1689 **/ |
|
1690 static irqreturn_t e1000_intr_msi(int irq, void *data) |
|
1691 { |
|
1692 struct net_device *netdev = data; |
|
1693 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1694 struct e1000_hw *hw = &adapter->hw; |
|
1695 u32 icr = er32(ICR); |
|
1696 |
|
1697 if (adapter->ecdev) { |
|
1698 int ec_work_done = 0; |
|
1699 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1700 e1000_clean_tx_irq(adapter->tx_ring); |
|
1701 return IRQ_HANDLED; |
|
1702 } |
|
1703 /* |
|
1704 * read ICR disables interrupts using IAM |
|
1705 */ |
|
1706 |
|
1707 if (icr & E1000_ICR_LSC) { |
|
1708 hw->mac.get_link_status = true; |
|
1709 /* |
|
1710 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1711 * disconnect (LSC) before accessing any PHY registers |
|
1712 */ |
|
1713 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1714 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1715 schedule_work(&adapter->downshift_task); |
|
1716 |
|
1717 /* |
|
1718 * 80003ES2LAN workaround-- For packet buffer work-around on |
|
1719 * link down event; disable receives here in the ISR and reset |
|
1720 * adapter in watchdog |
|
1721 */ |
|
1722 if (netif_carrier_ok(netdev) && |
|
1723 adapter->flags & FLAG_RX_NEEDS_RESTART) { |
|
1724 /* disable receives */ |
|
1725 u32 rctl = er32(RCTL); |
|
1726 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1727 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1728 } |
|
1729 /* guard against interrupt when we're going down */ |
|
1730 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1731 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1732 } |
|
1733 |
|
1734 if (napi_schedule_prep(&adapter->napi)) { |
|
1735 adapter->total_tx_bytes = 0; |
|
1736 adapter->total_tx_packets = 0; |
|
1737 adapter->total_rx_bytes = 0; |
|
1738 adapter->total_rx_packets = 0; |
|
1739 __napi_schedule(&adapter->napi); |
|
1740 } |
|
1741 |
|
1742 return IRQ_HANDLED; |
|
1743 } |
|
1744 |
|
1745 /** |
|
1746 * e1000_intr - Interrupt Handler |
|
1747 * @irq: interrupt number |
|
1748 * @data: pointer to a network interface device structure |
|
1749 **/ |
|
1750 static irqreturn_t e1000_intr(int irq, void *data) |
|
1751 { |
|
1752 struct net_device *netdev = data; |
|
1753 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1754 struct e1000_hw *hw = &adapter->hw; |
|
1755 u32 rctl, icr = er32(ICR); |
|
1756 |
|
1757 if (adapter->ecdev) { |
|
1758 int ec_work_done = 0; |
|
1759 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1760 e1000_clean_tx_irq(adapter->tx_ring); |
|
1761 return IRQ_HANDLED; |
|
1762 } |
|
1763 |
|
1764 if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
|
1765 return IRQ_NONE; /* Not our interrupt */ |
|
1766 |
|
1767 /* |
|
1768 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
1769 * not set, then the adapter didn't send an interrupt |
|
1770 */ |
|
1771 if (!(icr & E1000_ICR_INT_ASSERTED)) |
|
1772 return IRQ_NONE; |
|
1773 |
|
1774 /* |
|
1775 * Interrupt Auto-Mask...upon reading ICR, |
|
1776 * interrupts are masked. No need for the |
|
1777 * IMC write |
|
1778 */ |
|
1779 |
|
1780 if (icr & E1000_ICR_LSC) { |
|
1781 hw->mac.get_link_status = true; |
|
1782 /* |
|
1783 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1784 * disconnect (LSC) before accessing any PHY registers |
|
1785 */ |
|
1786 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1787 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1788 schedule_work(&adapter->downshift_task); |
|
1789 |
|
1790 /* |
|
1791 * 80003ES2LAN workaround-- |
|
1792 * For packet buffer work-around on link down event; |
|
1793 * disable receives here in the ISR and |
|
1794 * reset adapter in watchdog |
|
1795 */ |
|
1796 if (netif_carrier_ok(netdev) && |
|
1797 (adapter->flags & FLAG_RX_NEEDS_RESTART)) { |
|
1798 /* disable receives */ |
|
1799 rctl = er32(RCTL); |
|
1800 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1801 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1802 } |
|
1803 /* guard against interrupt when we're going down */ |
|
1804 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1805 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1806 } |
|
1807 |
|
1808 if (napi_schedule_prep(&adapter->napi)) { |
|
1809 adapter->total_tx_bytes = 0; |
|
1810 adapter->total_tx_packets = 0; |
|
1811 adapter->total_rx_bytes = 0; |
|
1812 adapter->total_rx_packets = 0; |
|
1813 __napi_schedule(&adapter->napi); |
|
1814 } |
|
1815 |
|
1816 return IRQ_HANDLED; |
|
1817 } |
|
1818 |
|
1819 static irqreturn_t e1000_msix_other(int irq, void *data) |
|
1820 { |
|
1821 struct net_device *netdev = data; |
|
1822 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1823 struct e1000_hw *hw = &adapter->hw; |
|
1824 u32 icr = er32(ICR); |
|
1825 |
|
1826 if (!(icr & E1000_ICR_INT_ASSERTED)) { |
|
1827 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1828 ew32(IMS, E1000_IMS_OTHER); |
|
1829 return IRQ_NONE; |
|
1830 } |
|
1831 |
|
1832 if (icr & adapter->eiac_mask) |
|
1833 ew32(ICS, (icr & adapter->eiac_mask)); |
|
1834 |
|
1835 if (icr & E1000_ICR_OTHER) { |
|
1836 if (!(icr & E1000_ICR_LSC)) |
|
1837 goto no_link_interrupt; |
|
1838 hw->mac.get_link_status = true; |
|
1839 /* guard against interrupt when we're going down */ |
|
1840 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
1841 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1842 } |
|
1843 |
|
1844 no_link_interrupt: |
|
1845 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1846 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); |
|
1847 |
|
1848 return IRQ_HANDLED; |
|
1849 } |
|
1850 |
|
1851 |
|
1852 static irqreturn_t e1000_intr_msix_tx(int irq, void *data) |
|
1853 { |
|
1854 struct net_device *netdev = data; |
|
1855 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1856 struct e1000_hw *hw = &adapter->hw; |
|
1857 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1858 |
|
1859 |
|
1860 adapter->total_tx_bytes = 0; |
|
1861 adapter->total_tx_packets = 0; |
|
1862 |
|
1863 if (!e1000_clean_tx_irq(tx_ring)) |
|
1864 /* Ring was not completely cleaned, so fire another interrupt */ |
|
1865 ew32(ICS, tx_ring->ims_val); |
|
1866 |
|
1867 return IRQ_HANDLED; |
|
1868 } |
|
1869 |
|
1870 static irqreturn_t e1000_intr_msix_rx(int irq, void *data) |
|
1871 { |
|
1872 struct net_device *netdev = data; |
|
1873 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1874 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1875 |
|
1876 /* Write the ITR value calculated at the end of the |
|
1877 * previous interrupt. |
|
1878 */ |
|
1879 if (rx_ring->set_itr) { |
|
1880 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1881 rx_ring->itr_register); |
|
1882 rx_ring->set_itr = 0; |
|
1883 } |
|
1884 |
|
1885 if (adapter->ecdev) { |
|
1886 int ec_work_done = 0; |
|
1887 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1888 } else { |
|
1889 if (napi_schedule_prep(&adapter->napi)) { |
|
1890 adapter->total_rx_bytes = 0; |
|
1891 adapter->total_rx_packets = 0; |
|
1892 __napi_schedule(&adapter->napi); |
|
1893 } |
|
1894 } |
|
1895 return IRQ_HANDLED; |
|
1896 } |
|
1897 |
|
1898 /** |
|
1899 * e1000_configure_msix - Configure MSI-X hardware |
|
1900 * |
|
1901 * e1000_configure_msix sets up the hardware to properly |
|
1902 * generate MSI-X interrupts. |
|
1903 **/ |
|
1904 static void e1000_configure_msix(struct e1000_adapter *adapter) |
|
1905 { |
|
1906 struct e1000_hw *hw = &adapter->hw; |
|
1907 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1908 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1909 int vector = 0; |
|
1910 u32 ctrl_ext, ivar = 0; |
|
1911 |
|
1912 adapter->eiac_mask = 0; |
|
1913 |
|
1914 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ |
|
1915 if (hw->mac.type == e1000_82574) { |
|
1916 u32 rfctl = er32(RFCTL); |
|
1917 rfctl |= E1000_RFCTL_ACK_DIS; |
|
1918 ew32(RFCTL, rfctl); |
|
1919 } |
|
1920 |
|
1921 #define E1000_IVAR_INT_ALLOC_VALID 0x8 |
|
1922 /* Configure Rx vector */ |
|
1923 rx_ring->ims_val = E1000_IMS_RXQ0; |
|
1924 adapter->eiac_mask |= rx_ring->ims_val; |
|
1925 if (rx_ring->itr_val) |
|
1926 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1927 rx_ring->itr_register); |
|
1928 else |
|
1929 writel(1, rx_ring->itr_register); |
|
1930 ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
|
1931 |
|
1932 /* Configure Tx vector */ |
|
1933 tx_ring->ims_val = E1000_IMS_TXQ0; |
|
1934 vector++; |
|
1935 if (tx_ring->itr_val) |
|
1936 writel(1000000000 / (tx_ring->itr_val * 256), |
|
1937 tx_ring->itr_register); |
|
1938 else |
|
1939 writel(1, tx_ring->itr_register); |
|
1940 adapter->eiac_mask |= tx_ring->ims_val; |
|
1941 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); |
|
1942 |
|
1943 /* set vector for Other Causes, e.g. link changes */ |
|
1944 vector++; |
|
1945 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); |
|
1946 if (rx_ring->itr_val) |
|
1947 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1948 hw->hw_addr + E1000_EITR_82574(vector)); |
|
1949 else |
|
1950 writel(1, hw->hw_addr + E1000_EITR_82574(vector)); |
|
1951 |
|
1952 /* Cause Tx interrupts on every write back */ |
|
1953 ivar |= (1 << 31); |
|
1954 |
|
1955 ew32(IVAR, ivar); |
|
1956 |
|
1957 /* enable MSI-X PBA support */ |
|
1958 ctrl_ext = er32(CTRL_EXT); |
|
1959 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; |
|
1960 |
|
1961 /* Auto-Mask Other interrupts upon ICR read */ |
|
1962 #define E1000_EIAC_MASK_82574 0x01F00000 |
|
1963 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
|
1964 ctrl_ext |= E1000_CTRL_EXT_EIAME; |
|
1965 ew32(CTRL_EXT, ctrl_ext); |
|
1966 e1e_flush(); |
|
1967 } |
|
1968 |
|
1969 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) |
|
1970 { |
|
1971 if (adapter->msix_entries) { |
|
1972 pci_disable_msix(adapter->pdev); |
|
1973 kfree(adapter->msix_entries); |
|
1974 adapter->msix_entries = NULL; |
|
1975 } else if (adapter->flags & FLAG_MSI_ENABLED) { |
|
1976 pci_disable_msi(adapter->pdev); |
|
1977 adapter->flags &= ~FLAG_MSI_ENABLED; |
|
1978 } |
|
1979 } |
|
1980 |
|
1981 /** |
|
1982 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported |
|
1983 * |
|
1984 * Attempt to configure interrupts using the best available |
|
1985 * capabilities of the hardware and kernel. |
|
1986 **/ |
|
1987 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) |
|
1988 { |
|
1989 int err; |
|
1990 int i; |
|
1991 |
|
1992 switch (adapter->int_mode) { |
|
1993 case E1000E_INT_MODE_MSIX: |
|
1994 if (adapter->flags & FLAG_HAS_MSIX) { |
|
1995 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
|
1996 adapter->msix_entries = kcalloc(adapter->num_vectors, |
|
1997 sizeof(struct msix_entry), |
|
1998 GFP_KERNEL); |
|
1999 if (adapter->msix_entries) { |
|
2000 for (i = 0; i < adapter->num_vectors; i++) |
|
2001 adapter->msix_entries[i].entry = i; |
|
2002 |
|
2003 err = pci_enable_msix(adapter->pdev, |
|
2004 adapter->msix_entries, |
|
2005 adapter->num_vectors); |
|
2006 if (err == 0) |
|
2007 return; |
|
2008 } |
|
2009 /* MSI-X failed, so fall through and try MSI */ |
|
2010 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n"); |
|
2011 e1000e_reset_interrupt_capability(adapter); |
|
2012 } |
|
2013 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2014 /* Fall through */ |
|
2015 case E1000E_INT_MODE_MSI: |
|
2016 if (!pci_enable_msi(adapter->pdev)) { |
|
2017 adapter->flags |= FLAG_MSI_ENABLED; |
|
2018 } else { |
|
2019 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2020 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n"); |
|
2021 } |
|
2022 /* Fall through */ |
|
2023 case E1000E_INT_MODE_LEGACY: |
|
2024 /* Don't do anything; this is the system default */ |
|
2025 break; |
|
2026 } |
|
2027 |
|
2028 /* store the number of vectors being used */ |
|
2029 adapter->num_vectors = 1; |
|
2030 } |
|
2031 |
|
2032 /** |
|
2033 * e1000_request_msix - Initialize MSI-X interrupts |
|
2034 * |
|
2035 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the |
|
2036 * kernel. |
|
2037 **/ |
|
2038 static int e1000_request_msix(struct e1000_adapter *adapter) |
|
2039 { |
|
2040 struct net_device *netdev = adapter->netdev; |
|
2041 int err = 0, vector = 0; |
|
2042 |
|
2043 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2044 snprintf(adapter->rx_ring->name, |
|
2045 sizeof(adapter->rx_ring->name) - 1, |
|
2046 "%s-rx-0", netdev->name); |
|
2047 else |
|
2048 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); |
|
2049 err = request_irq(adapter->msix_entries[vector].vector, |
|
2050 e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
|
2051 netdev); |
|
2052 if (err) |
|
2053 return err; |
|
2054 adapter->rx_ring->itr_register = adapter->hw.hw_addr + |
|
2055 E1000_EITR_82574(vector); |
|
2056 adapter->rx_ring->itr_val = adapter->itr; |
|
2057 vector++; |
|
2058 |
|
2059 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2060 snprintf(adapter->tx_ring->name, |
|
2061 sizeof(adapter->tx_ring->name) - 1, |
|
2062 "%s-tx-0", netdev->name); |
|
2063 else |
|
2064 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); |
|
2065 err = request_irq(adapter->msix_entries[vector].vector, |
|
2066 e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
|
2067 netdev); |
|
2068 if (err) |
|
2069 return err; |
|
2070 adapter->tx_ring->itr_register = adapter->hw.hw_addr + |
|
2071 E1000_EITR_82574(vector); |
|
2072 adapter->tx_ring->itr_val = adapter->itr; |
|
2073 vector++; |
|
2074 |
|
2075 err = request_irq(adapter->msix_entries[vector].vector, |
|
2076 e1000_msix_other, 0, netdev->name, netdev); |
|
2077 if (err) |
|
2078 return err; |
|
2079 |
|
2080 e1000_configure_msix(adapter); |
|
2081 |
|
2082 return 0; |
|
2083 } |
|
2084 |
|
2085 /** |
|
2086 * e1000_request_irq - initialize interrupts |
|
2087 * |
|
2088 * Attempts to configure interrupts using the best available |
|
2089 * capabilities of the hardware and kernel. |
|
2090 **/ |
|
2091 static int e1000_request_irq(struct e1000_adapter *adapter) |
|
2092 { |
|
2093 struct net_device *netdev = adapter->netdev; |
|
2094 int err; |
|
2095 |
|
2096 if (adapter->ecdev) |
|
2097 return 0; |
|
2098 |
|
2099 if (adapter->msix_entries) { |
|
2100 err = e1000_request_msix(adapter); |
|
2101 if (!err) |
|
2102 return err; |
|
2103 /* fall back to MSI */ |
|
2104 e1000e_reset_interrupt_capability(adapter); |
|
2105 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2106 e1000e_set_interrupt_capability(adapter); |
|
2107 } |
|
2108 if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2109 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
|
2110 netdev->name, netdev); |
|
2111 if (!err) |
|
2112 return err; |
|
2113 |
|
2114 /* fall back to legacy interrupt */ |
|
2115 e1000e_reset_interrupt_capability(adapter); |
|
2116 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2117 } |
|
2118 |
|
2119 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
|
2120 netdev->name, netdev); |
|
2121 if (err) |
|
2122 e_err("Unable to allocate interrupt, Error: %d\n", err); |
|
2123 |
|
2124 return err; |
|
2125 } |
|
2126 |
|
2127 static void e1000_free_irq(struct e1000_adapter *adapter) |
|
2128 { |
|
2129 struct net_device *netdev = adapter->netdev; |
|
2130 |
|
2131 if (adapter->ecdev) { |
|
2132 return; |
|
2133 } |
|
2134 |
|
2135 if (adapter->msix_entries) { |
|
2136 int vector = 0; |
|
2137 |
|
2138 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2139 vector++; |
|
2140 |
|
2141 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2142 vector++; |
|
2143 |
|
2144 /* Other Causes interrupt vector */ |
|
2145 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2146 return; |
|
2147 } |
|
2148 |
|
2149 free_irq(adapter->pdev->irq, netdev); |
|
2150 } |
|
2151 |
|
2152 /** |
|
2153 * e1000_irq_disable - Mask off interrupt generation on the NIC |
|
2154 **/ |
|
2155 static void e1000_irq_disable(struct e1000_adapter *adapter) |
|
2156 { |
|
2157 struct e1000_hw *hw = &adapter->hw; |
|
2158 |
|
2159 ew32(IMC, ~0); |
|
2160 if (adapter->msix_entries) |
|
2161 ew32(EIAC_82574, 0); |
|
2162 e1e_flush(); |
|
2163 |
|
2164 if (adapter->ecdev) { |
|
2165 return; |
|
2166 } |
|
2167 |
|
2168 if (adapter->msix_entries) { |
|
2169 int i; |
|
2170 for (i = 0; i < adapter->num_vectors; i++) |
|
2171 synchronize_irq(adapter->msix_entries[i].vector); |
|
2172 } else { |
|
2173 synchronize_irq(adapter->pdev->irq); |
|
2174 } |
|
2175 } |
|
2176 |
|
2177 /** |
|
2178 * e1000_irq_enable - Enable default interrupt generation settings |
|
2179 **/ |
|
2180 static void e1000_irq_enable(struct e1000_adapter *adapter) |
|
2181 { |
|
2182 struct e1000_hw *hw = &adapter->hw; |
|
2183 |
|
2184 if (adapter->ecdev) |
|
2185 return; |
|
2186 |
|
2187 if (adapter->msix_entries) { |
|
2188 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); |
|
2189 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); |
|
2190 } else { |
|
2191 ew32(IMS, IMS_ENABLE_MASK); |
|
2192 } |
|
2193 e1e_flush(); |
|
2194 } |
|
2195 |
|
2196 /** |
|
2197 * e1000e_get_hw_control - get control of the h/w from f/w |
|
2198 * @adapter: address of board private structure |
|
2199 * |
|
2200 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2201 * For ASF and Pass Through versions of f/w this means that |
|
2202 * the driver is loaded. For AMT version (only with 82573) |
|
2203 * of the f/w this means that the network i/f is open. |
|
2204 **/ |
|
2205 void e1000e_get_hw_control(struct e1000_adapter *adapter) |
|
2206 { |
|
2207 struct e1000_hw *hw = &adapter->hw; |
|
2208 u32 ctrl_ext; |
|
2209 u32 swsm; |
|
2210 |
|
2211 /* Let firmware know the driver has taken over */ |
|
2212 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2213 swsm = er32(SWSM); |
|
2214 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
|
2215 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2216 ctrl_ext = er32(CTRL_EXT); |
|
2217 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
2218 } |
|
2219 } |
|
2220 |
|
2221 /** |
|
2222 * e1000e_release_hw_control - release control of the h/w to f/w |
|
2223 * @adapter: address of board private structure |
|
2224 * |
|
2225 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2226 * For ASF and Pass Through versions of f/w this means that the |
|
2227 * driver is no longer loaded. For AMT version (only with 82573) i |
|
2228 * of the f/w this means that the network i/f is closed. |
|
2229 * |
|
2230 **/ |
|
2231 void e1000e_release_hw_control(struct e1000_adapter *adapter) |
|
2232 { |
|
2233 struct e1000_hw *hw = &adapter->hw; |
|
2234 u32 ctrl_ext; |
|
2235 u32 swsm; |
|
2236 |
|
2237 /* Let firmware taken over control of h/w */ |
|
2238 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2239 swsm = er32(SWSM); |
|
2240 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
|
2241 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2242 ctrl_ext = er32(CTRL_EXT); |
|
2243 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
|
2244 } |
|
2245 } |
|
2246 |
|
2247 /** |
|
2248 * e1000_alloc_ring_dma - allocate memory for a ring structure |
|
2249 **/ |
|
2250 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, |
|
2251 struct e1000_ring *ring) |
|
2252 { |
|
2253 struct pci_dev *pdev = adapter->pdev; |
|
2254 |
|
2255 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, |
|
2256 GFP_KERNEL); |
|
2257 if (!ring->desc) |
|
2258 return -ENOMEM; |
|
2259 |
|
2260 return 0; |
|
2261 } |
|
2262 |
|
2263 /** |
|
2264 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) |
|
2265 * @tx_ring: Tx descriptor ring |
|
2266 * |
|
2267 * Return 0 on success, negative on failure |
|
2268 **/ |
|
2269 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring) |
|
2270 { |
|
2271 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2272 int err = -ENOMEM, size; |
|
2273 |
|
2274 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2275 tx_ring->buffer_info = vzalloc(size); |
|
2276 if (!tx_ring->buffer_info) |
|
2277 goto err; |
|
2278 |
|
2279 /* round up to nearest 4K */ |
|
2280 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2281 tx_ring->size = ALIGN(tx_ring->size, 4096); |
|
2282 |
|
2283 err = e1000_alloc_ring_dma(adapter, tx_ring); |
|
2284 if (err) |
|
2285 goto err; |
|
2286 |
|
2287 tx_ring->next_to_use = 0; |
|
2288 tx_ring->next_to_clean = 0; |
|
2289 |
|
2290 return 0; |
|
2291 err: |
|
2292 vfree(tx_ring->buffer_info); |
|
2293 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2294 return err; |
|
2295 } |
|
2296 |
|
2297 /** |
|
2298 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) |
|
2299 * @rx_ring: Rx descriptor ring |
|
2300 * |
|
2301 * Returns 0 on success, negative on failure |
|
2302 **/ |
|
2303 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring) |
|
2304 { |
|
2305 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2306 struct e1000_buffer *buffer_info; |
|
2307 int i, size, desc_len, err = -ENOMEM; |
|
2308 |
|
2309 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2310 rx_ring->buffer_info = vzalloc(size); |
|
2311 if (!rx_ring->buffer_info) |
|
2312 goto err; |
|
2313 |
|
2314 for (i = 0; i < rx_ring->count; i++) { |
|
2315 buffer_info = &rx_ring->buffer_info[i]; |
|
2316 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, |
|
2317 sizeof(struct e1000_ps_page), |
|
2318 GFP_KERNEL); |
|
2319 if (!buffer_info->ps_pages) |
|
2320 goto err_pages; |
|
2321 } |
|
2322 |
|
2323 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
2324 |
|
2325 /* Round up to nearest 4K */ |
|
2326 rx_ring->size = rx_ring->count * desc_len; |
|
2327 rx_ring->size = ALIGN(rx_ring->size, 4096); |
|
2328 |
|
2329 err = e1000_alloc_ring_dma(adapter, rx_ring); |
|
2330 if (err) |
|
2331 goto err_pages; |
|
2332 |
|
2333 rx_ring->next_to_clean = 0; |
|
2334 rx_ring->next_to_use = 0; |
|
2335 rx_ring->rx_skb_top = NULL; |
|
2336 |
|
2337 return 0; |
|
2338 |
|
2339 err_pages: |
|
2340 for (i = 0; i < rx_ring->count; i++) { |
|
2341 buffer_info = &rx_ring->buffer_info[i]; |
|
2342 kfree(buffer_info->ps_pages); |
|
2343 } |
|
2344 err: |
|
2345 vfree(rx_ring->buffer_info); |
|
2346 e_err("Unable to allocate memory for the receive descriptor ring\n"); |
|
2347 return err; |
|
2348 } |
|
2349 |
|
2350 /** |
|
2351 * e1000_clean_tx_ring - Free Tx Buffers |
|
2352 * @tx_ring: Tx descriptor ring |
|
2353 **/ |
|
2354 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring) |
|
2355 { |
|
2356 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2357 struct e1000_buffer *buffer_info; |
|
2358 unsigned long size; |
|
2359 unsigned int i; |
|
2360 |
|
2361 for (i = 0; i < tx_ring->count; i++) { |
|
2362 buffer_info = &tx_ring->buffer_info[i]; |
|
2363 e1000_put_txbuf(tx_ring, buffer_info); |
|
2364 } |
|
2365 |
|
2366 netdev_reset_queue(adapter->netdev); |
|
2367 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2368 memset(tx_ring->buffer_info, 0, size); |
|
2369 |
|
2370 memset(tx_ring->desc, 0, tx_ring->size); |
|
2371 |
|
2372 tx_ring->next_to_use = 0; |
|
2373 tx_ring->next_to_clean = 0; |
|
2374 |
|
2375 writel(0, tx_ring->head); |
|
2376 if (tx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
2377 e1000e_update_tdt_wa(tx_ring, 0); |
|
2378 else |
|
2379 writel(0, tx_ring->tail); |
|
2380 } |
|
2381 |
|
2382 /** |
|
2383 * e1000e_free_tx_resources - Free Tx Resources per Queue |
|
2384 * @tx_ring: Tx descriptor ring |
|
2385 * |
|
2386 * Free all transmit software resources |
|
2387 **/ |
|
2388 void e1000e_free_tx_resources(struct e1000_ring *tx_ring) |
|
2389 { |
|
2390 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2391 struct pci_dev *pdev = adapter->pdev; |
|
2392 |
|
2393 e1000_clean_tx_ring(tx_ring); |
|
2394 |
|
2395 vfree(tx_ring->buffer_info); |
|
2396 tx_ring->buffer_info = NULL; |
|
2397 |
|
2398 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
2399 tx_ring->dma); |
|
2400 tx_ring->desc = NULL; |
|
2401 } |
|
2402 |
|
2403 /** |
|
2404 * e1000e_free_rx_resources - Free Rx Resources |
|
2405 * @rx_ring: Rx descriptor ring |
|
2406 * |
|
2407 * Free all receive software resources |
|
2408 **/ |
|
2409 void e1000e_free_rx_resources(struct e1000_ring *rx_ring) |
|
2410 { |
|
2411 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2412 struct pci_dev *pdev = adapter->pdev; |
|
2413 int i; |
|
2414 |
|
2415 e1000_clean_rx_ring(rx_ring); |
|
2416 |
|
2417 for (i = 0; i < rx_ring->count; i++) |
|
2418 kfree(rx_ring->buffer_info[i].ps_pages); |
|
2419 |
|
2420 vfree(rx_ring->buffer_info); |
|
2421 rx_ring->buffer_info = NULL; |
|
2422 |
|
2423 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2424 rx_ring->dma); |
|
2425 rx_ring->desc = NULL; |
|
2426 } |
|
2427 |
|
2428 /** |
|
2429 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2430 * @adapter: pointer to adapter |
|
2431 * @itr_setting: current adapter->itr |
|
2432 * @packets: the number of packets during this measurement interval |
|
2433 * @bytes: the number of bytes during this measurement interval |
|
2434 * |
|
2435 * Stores a new ITR value based on packets and byte |
|
2436 * counts during the last interrupt. The advantage of per interrupt |
|
2437 * computation is faster updates and more accurate ITR for the current |
|
2438 * traffic pattern. Constants in this function were computed |
|
2439 * based on theoretical maximum wire speed and thresholds were set based |
|
2440 * on testing data as well as attempting to minimize response time |
|
2441 * while increasing bulk throughput. This functionality is controlled |
|
2442 * by the InterruptThrottleRate module parameter. |
|
2443 **/ |
|
2444 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2445 u16 itr_setting, int packets, |
|
2446 int bytes) |
|
2447 { |
|
2448 unsigned int retval = itr_setting; |
|
2449 |
|
2450 if (packets == 0) |
|
2451 return itr_setting; |
|
2452 |
|
2453 switch (itr_setting) { |
|
2454 case lowest_latency: |
|
2455 /* handle TSO and jumbo frames */ |
|
2456 if (bytes/packets > 8000) |
|
2457 retval = bulk_latency; |
|
2458 else if ((packets < 5) && (bytes > 512)) |
|
2459 retval = low_latency; |
|
2460 break; |
|
2461 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2462 if (bytes > 10000) { |
|
2463 /* this if handles the TSO accounting */ |
|
2464 if (bytes/packets > 8000) |
|
2465 retval = bulk_latency; |
|
2466 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2467 retval = bulk_latency; |
|
2468 else if ((packets > 35)) |
|
2469 retval = lowest_latency; |
|
2470 } else if (bytes/packets > 2000) { |
|
2471 retval = bulk_latency; |
|
2472 } else if (packets <= 2 && bytes < 512) { |
|
2473 retval = lowest_latency; |
|
2474 } |
|
2475 break; |
|
2476 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2477 if (bytes > 25000) { |
|
2478 if (packets > 35) |
|
2479 retval = low_latency; |
|
2480 } else if (bytes < 6000) { |
|
2481 retval = low_latency; |
|
2482 } |
|
2483 break; |
|
2484 } |
|
2485 |
|
2486 return retval; |
|
2487 } |
|
2488 |
|
2489 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2490 { |
|
2491 struct e1000_hw *hw = &adapter->hw; |
|
2492 u16 current_itr; |
|
2493 u32 new_itr = adapter->itr; |
|
2494 |
|
2495 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2496 if (adapter->link_speed != SPEED_1000) { |
|
2497 current_itr = 0; |
|
2498 new_itr = 4000; |
|
2499 goto set_itr_now; |
|
2500 } |
|
2501 |
|
2502 if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
2503 new_itr = 0; |
|
2504 goto set_itr_now; |
|
2505 } |
|
2506 |
|
2507 adapter->tx_itr = e1000_update_itr(adapter, |
|
2508 adapter->tx_itr, |
|
2509 adapter->total_tx_packets, |
|
2510 adapter->total_tx_bytes); |
|
2511 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2512 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2513 adapter->tx_itr = low_latency; |
|
2514 |
|
2515 adapter->rx_itr = e1000_update_itr(adapter, |
|
2516 adapter->rx_itr, |
|
2517 adapter->total_rx_packets, |
|
2518 adapter->total_rx_bytes); |
|
2519 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2520 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2521 adapter->rx_itr = low_latency; |
|
2522 |
|
2523 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2524 |
|
2525 switch (current_itr) { |
|
2526 /* counts and packets in update_itr are dependent on these numbers */ |
|
2527 case lowest_latency: |
|
2528 new_itr = 70000; |
|
2529 break; |
|
2530 case low_latency: |
|
2531 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2532 break; |
|
2533 case bulk_latency: |
|
2534 new_itr = 4000; |
|
2535 break; |
|
2536 default: |
|
2537 break; |
|
2538 } |
|
2539 |
|
2540 set_itr_now: |
|
2541 if (new_itr != adapter->itr) { |
|
2542 /* |
|
2543 * this attempts to bias the interrupt rate towards Bulk |
|
2544 * by adding intermediate steps when interrupt rate is |
|
2545 * increasing |
|
2546 */ |
|
2547 new_itr = new_itr > adapter->itr ? |
|
2548 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2549 new_itr; |
|
2550 adapter->itr = new_itr; |
|
2551 adapter->rx_ring->itr_val = new_itr; |
|
2552 if (adapter->msix_entries) |
|
2553 adapter->rx_ring->set_itr = 1; |
|
2554 else |
|
2555 if (new_itr) |
|
2556 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2557 else |
|
2558 ew32(ITR, 0); |
|
2559 } |
|
2560 } |
|
2561 |
|
2562 /** |
|
2563 * e1000e_write_itr - write the ITR value to the appropriate registers |
|
2564 * @adapter: address of board private structure |
|
2565 * @itr: new ITR value to program |
|
2566 * |
|
2567 * e1000e_write_itr determines if the adapter is in MSI-X mode |
|
2568 * and, if so, writes the EITR registers with the ITR value. |
|
2569 * Otherwise, it writes the ITR value into the ITR register. |
|
2570 **/ |
|
2571 void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr) |
|
2572 { |
|
2573 struct e1000_hw *hw = &adapter->hw; |
|
2574 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0; |
|
2575 |
|
2576 if (adapter->msix_entries) { |
|
2577 int vector; |
|
2578 |
|
2579 for (vector = 0; vector < adapter->num_vectors; vector++) |
|
2580 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector)); |
|
2581 } else { |
|
2582 ew32(ITR, new_itr); |
|
2583 } |
|
2584 } |
|
2585 |
|
2586 /** |
|
2587 * e1000_alloc_queues - Allocate memory for all rings |
|
2588 * @adapter: board private structure to initialize |
|
2589 **/ |
|
2590 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
2591 { |
|
2592 int size = sizeof(struct e1000_ring); |
|
2593 |
|
2594 adapter->tx_ring = kzalloc(size, GFP_KERNEL); |
|
2595 if (!adapter->tx_ring) |
|
2596 goto err; |
|
2597 adapter->tx_ring->count = adapter->tx_ring_count; |
|
2598 adapter->tx_ring->adapter = adapter; |
|
2599 |
|
2600 adapter->rx_ring = kzalloc(size, GFP_KERNEL); |
|
2601 if (!adapter->rx_ring) |
|
2602 goto err; |
|
2603 adapter->rx_ring->count = adapter->rx_ring_count; |
|
2604 adapter->rx_ring->adapter = adapter; |
|
2605 |
|
2606 return 0; |
|
2607 err: |
|
2608 e_err("Unable to allocate memory for queues\n"); |
|
2609 kfree(adapter->rx_ring); |
|
2610 kfree(adapter->tx_ring); |
|
2611 return -ENOMEM; |
|
2612 } |
|
2613 |
|
2614 /** |
|
2615 * e1000e_poll - NAPI Rx polling callback |
|
2616 * @napi: struct associated with this polling callback |
|
2617 * @weight: number of packets driver is allowed to process this poll |
|
2618 **/ |
|
2619 static int e1000e_poll(struct napi_struct *napi, int weight) |
|
2620 { |
|
2621 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, |
|
2622 napi); |
|
2623 struct e1000_hw *hw = &adapter->hw; |
|
2624 struct net_device *poll_dev = adapter->netdev; |
|
2625 int tx_cleaned = 1, work_done = 0; |
|
2626 |
|
2627 adapter = netdev_priv(poll_dev); |
|
2628 |
|
2629 if (!adapter->msix_entries || |
|
2630 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) |
|
2631 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring); |
|
2632 |
|
2633 adapter->clean_rx(adapter->rx_ring, &work_done, weight); |
|
2634 |
|
2635 if (!tx_cleaned) |
|
2636 work_done = weight; |
|
2637 |
|
2638 /* If weight not fully consumed, exit the polling mode */ |
|
2639 if (work_done < weight) { |
|
2640 if (adapter->itr_setting & 3) |
|
2641 e1000_set_itr(adapter); |
|
2642 napi_complete(napi); |
|
2643 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
2644 if (adapter->msix_entries) |
|
2645 ew32(IMS, adapter->rx_ring->ims_val); |
|
2646 else |
|
2647 e1000_irq_enable(adapter); |
|
2648 } |
|
2649 } |
|
2650 |
|
2651 return work_done; |
|
2652 } |
|
2653 |
|
2654 static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
2655 { |
|
2656 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2657 struct e1000_hw *hw = &adapter->hw; |
|
2658 u32 vfta, index; |
|
2659 |
|
2660 /* don't update vlan cookie if already programmed */ |
|
2661 if ((adapter->hw.mng_cookie.status & |
|
2662 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2663 (vid == adapter->mng_vlan_id)) |
|
2664 return 0; |
|
2665 |
|
2666 /* add VID to filter table */ |
|
2667 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2668 index = (vid >> 5) & 0x7F; |
|
2669 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2670 vfta |= (1 << (vid & 0x1F)); |
|
2671 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2672 } |
|
2673 |
|
2674 set_bit(vid, adapter->active_vlans); |
|
2675 |
|
2676 return 0; |
|
2677 } |
|
2678 |
|
2679 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
2680 { |
|
2681 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2682 struct e1000_hw *hw = &adapter->hw; |
|
2683 u32 vfta, index; |
|
2684 |
|
2685 if ((adapter->hw.mng_cookie.status & |
|
2686 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2687 (vid == adapter->mng_vlan_id)) { |
|
2688 /* release control to f/w */ |
|
2689 e1000e_release_hw_control(adapter); |
|
2690 return 0; |
|
2691 } |
|
2692 |
|
2693 /* remove VID from filter table */ |
|
2694 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2695 index = (vid >> 5) & 0x7F; |
|
2696 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2697 vfta &= ~(1 << (vid & 0x1F)); |
|
2698 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2699 } |
|
2700 |
|
2701 clear_bit(vid, adapter->active_vlans); |
|
2702 |
|
2703 return 0; |
|
2704 } |
|
2705 |
|
2706 /** |
|
2707 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering |
|
2708 * @adapter: board private structure to initialize |
|
2709 **/ |
|
2710 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) |
|
2711 { |
|
2712 struct net_device *netdev = adapter->netdev; |
|
2713 struct e1000_hw *hw = &adapter->hw; |
|
2714 u32 rctl; |
|
2715 |
|
2716 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2717 /* disable VLAN receive filtering */ |
|
2718 rctl = er32(RCTL); |
|
2719 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); |
|
2720 ew32(RCTL, rctl); |
|
2721 |
|
2722 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
2723 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
2724 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2725 } |
|
2726 } |
|
2727 } |
|
2728 |
|
2729 /** |
|
2730 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering |
|
2731 * @adapter: board private structure to initialize |
|
2732 **/ |
|
2733 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) |
|
2734 { |
|
2735 struct e1000_hw *hw = &adapter->hw; |
|
2736 u32 rctl; |
|
2737 |
|
2738 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2739 /* enable VLAN receive filtering */ |
|
2740 rctl = er32(RCTL); |
|
2741 rctl |= E1000_RCTL_VFE; |
|
2742 rctl &= ~E1000_RCTL_CFIEN; |
|
2743 ew32(RCTL, rctl); |
|
2744 } |
|
2745 } |
|
2746 |
|
2747 /** |
|
2748 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping |
|
2749 * @adapter: board private structure to initialize |
|
2750 **/ |
|
2751 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) |
|
2752 { |
|
2753 struct e1000_hw *hw = &adapter->hw; |
|
2754 u32 ctrl; |
|
2755 |
|
2756 /* disable VLAN tag insert/strip */ |
|
2757 ctrl = er32(CTRL); |
|
2758 ctrl &= ~E1000_CTRL_VME; |
|
2759 ew32(CTRL, ctrl); |
|
2760 } |
|
2761 |
|
2762 /** |
|
2763 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping |
|
2764 * @adapter: board private structure to initialize |
|
2765 **/ |
|
2766 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) |
|
2767 { |
|
2768 struct e1000_hw *hw = &adapter->hw; |
|
2769 u32 ctrl; |
|
2770 |
|
2771 /* enable VLAN tag insert/strip */ |
|
2772 ctrl = er32(CTRL); |
|
2773 ctrl |= E1000_CTRL_VME; |
|
2774 ew32(CTRL, ctrl); |
|
2775 } |
|
2776 |
|
2777 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
|
2778 { |
|
2779 struct net_device *netdev = adapter->netdev; |
|
2780 u16 vid = adapter->hw.mng_cookie.vlan_id; |
|
2781 u16 old_vid = adapter->mng_vlan_id; |
|
2782 |
|
2783 if (adapter->hw.mng_cookie.status & |
|
2784 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
|
2785 e1000_vlan_rx_add_vid(netdev, vid); |
|
2786 adapter->mng_vlan_id = vid; |
|
2787 } |
|
2788 |
|
2789 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
|
2790 e1000_vlan_rx_kill_vid(netdev, old_vid); |
|
2791 } |
|
2792 |
|
2793 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
2794 { |
|
2795 u16 vid; |
|
2796 |
|
2797 e1000_vlan_rx_add_vid(adapter->netdev, 0); |
|
2798 |
|
2799 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
|
2800 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
2801 } |
|
2802 |
|
2803 static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
|
2804 { |
|
2805 struct e1000_hw *hw = &adapter->hw; |
|
2806 u32 manc, manc2h, mdef, i, j; |
|
2807 |
|
2808 if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) |
|
2809 return; |
|
2810 |
|
2811 manc = er32(MANC); |
|
2812 |
|
2813 /* |
|
2814 * enable receiving management packets to the host. this will probably |
|
2815 * generate destination unreachable messages from the host OS, but |
|
2816 * the packets will be handled on SMBUS |
|
2817 */ |
|
2818 manc |= E1000_MANC_EN_MNG2HOST; |
|
2819 manc2h = er32(MANC2H); |
|
2820 |
|
2821 switch (hw->mac.type) { |
|
2822 default: |
|
2823 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); |
|
2824 break; |
|
2825 case e1000_82574: |
|
2826 case e1000_82583: |
|
2827 /* |
|
2828 * Check if IPMI pass-through decision filter already exists; |
|
2829 * if so, enable it. |
|
2830 */ |
|
2831 for (i = 0, j = 0; i < 8; i++) { |
|
2832 mdef = er32(MDEF(i)); |
|
2833 |
|
2834 /* Ignore filters with anything other than IPMI ports */ |
|
2835 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2836 continue; |
|
2837 |
|
2838 /* Enable this decision filter in MANC2H */ |
|
2839 if (mdef) |
|
2840 manc2h |= (1 << i); |
|
2841 |
|
2842 j |= mdef; |
|
2843 } |
|
2844 |
|
2845 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2846 break; |
|
2847 |
|
2848 /* Create new decision filter in an empty filter */ |
|
2849 for (i = 0, j = 0; i < 8; i++) |
|
2850 if (er32(MDEF(i)) == 0) { |
|
2851 ew32(MDEF(i), (E1000_MDEF_PORT_623 | |
|
2852 E1000_MDEF_PORT_664)); |
|
2853 manc2h |= (1 << 1); |
|
2854 j++; |
|
2855 break; |
|
2856 } |
|
2857 |
|
2858 if (!j) |
|
2859 e_warn("Unable to create IPMI pass-through filter\n"); |
|
2860 break; |
|
2861 } |
|
2862 |
|
2863 ew32(MANC2H, manc2h); |
|
2864 ew32(MANC, manc); |
|
2865 } |
|
2866 |
|
2867 /** |
|
2868 * e1000_configure_tx - Configure Transmit Unit after Reset |
|
2869 * @adapter: board private structure |
|
2870 * |
|
2871 * Configure the Tx unit of the MAC after a reset. |
|
2872 **/ |
|
2873 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
2874 { |
|
2875 struct e1000_hw *hw = &adapter->hw; |
|
2876 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2877 u64 tdba; |
|
2878 u32 tdlen, tarc; |
|
2879 |
|
2880 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
2881 tdba = tx_ring->dma; |
|
2882 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2883 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
|
2884 ew32(TDBAH(0), (tdba >> 32)); |
|
2885 ew32(TDLEN(0), tdlen); |
|
2886 ew32(TDH(0), 0); |
|
2887 ew32(TDT(0), 0); |
|
2888 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0); |
|
2889 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0); |
|
2890 |
|
2891 /* Set the Tx Interrupt Delay register */ |
|
2892 ew32(TIDV, adapter->tx_int_delay); |
|
2893 /* Tx irq moderation */ |
|
2894 ew32(TADV, adapter->tx_abs_int_delay); |
|
2895 |
|
2896 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
2897 u32 txdctl = er32(TXDCTL(0)); |
|
2898 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
|
2899 E1000_TXDCTL_WTHRESH); |
|
2900 /* |
|
2901 * set up some performance related parameters to encourage the |
|
2902 * hardware to use the bus more efficiently in bursts, depends |
|
2903 * on the tx_int_delay to be enabled, |
|
2904 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls |
|
2905 * hthresh = 1 ==> prefetch when one or more available |
|
2906 * pthresh = 0x1f ==> prefetch if internal cache 31 or less |
|
2907 * BEWARE: this seems to work but should be considered first if |
|
2908 * there are Tx hangs or other Tx related bugs |
|
2909 */ |
|
2910 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; |
|
2911 ew32(TXDCTL(0), txdctl); |
|
2912 } |
|
2913 /* erratum work around: set txdctl the same for both queues */ |
|
2914 ew32(TXDCTL(1), er32(TXDCTL(0))); |
|
2915 |
|
2916 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
|
2917 tarc = er32(TARC(0)); |
|
2918 /* |
|
2919 * set the speed mode bit, we'll clear it if we're not at |
|
2920 * gigabit link later |
|
2921 */ |
|
2922 #define SPEED_MODE_BIT (1 << 21) |
|
2923 tarc |= SPEED_MODE_BIT; |
|
2924 ew32(TARC(0), tarc); |
|
2925 } |
|
2926 |
|
2927 /* errata: program both queues to unweighted RR */ |
|
2928 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { |
|
2929 tarc = er32(TARC(0)); |
|
2930 tarc |= 1; |
|
2931 ew32(TARC(0), tarc); |
|
2932 tarc = er32(TARC(1)); |
|
2933 tarc |= 1; |
|
2934 ew32(TARC(1), tarc); |
|
2935 } |
|
2936 |
|
2937 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
2938 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
2939 |
|
2940 /* only set IDE if we are delaying interrupts using the timers */ |
|
2941 if (adapter->tx_int_delay) |
|
2942 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
2943 |
|
2944 /* enable Report Status bit */ |
|
2945 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
2946 |
|
2947 hw->mac.ops.config_collision_dist(hw); |
|
2948 } |
|
2949 |
|
2950 /** |
|
2951 * e1000_setup_rctl - configure the receive control registers |
|
2952 * @adapter: Board private structure |
|
2953 **/ |
|
2954 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
2955 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
2956 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
2957 { |
|
2958 struct e1000_hw *hw = &adapter->hw; |
|
2959 u32 rctl, rfctl; |
|
2960 u32 pages = 0; |
|
2961 |
|
2962 /* Workaround Si errata on PCHx - configure jumbo frame flow */ |
|
2963 if (hw->mac.type >= e1000_pch2lan) { |
|
2964 s32 ret_val; |
|
2965 |
|
2966 if (adapter->netdev->mtu > ETH_DATA_LEN) |
|
2967 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); |
|
2968 else |
|
2969 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); |
|
2970 |
|
2971 if (ret_val) |
|
2972 e_dbg("failed to enable jumbo frame workaround mode\n"); |
|
2973 } |
|
2974 |
|
2975 /* Program MC offset vector base */ |
|
2976 rctl = er32(RCTL); |
|
2977 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
2978 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
2979 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
2980 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
2981 |
|
2982 /* Do not Store bad packets */ |
|
2983 rctl &= ~E1000_RCTL_SBP; |
|
2984 |
|
2985 /* Enable Long Packet receive */ |
|
2986 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
2987 rctl &= ~E1000_RCTL_LPE; |
|
2988 else |
|
2989 rctl |= E1000_RCTL_LPE; |
|
2990 |
|
2991 /* Some systems expect that the CRC is included in SMBUS traffic. The |
|
2992 * hardware strips the CRC before sending to both SMBUS (BMC) and to |
|
2993 * host memory when this is enabled |
|
2994 */ |
|
2995 if (adapter->flags2 & FLAG2_CRC_STRIPPING) |
|
2996 rctl |= E1000_RCTL_SECRC; |
|
2997 |
|
2998 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
|
2999 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { |
|
3000 u16 phy_data; |
|
3001 |
|
3002 e1e_rphy(hw, PHY_REG(770, 26), &phy_data); |
|
3003 phy_data &= 0xfff8; |
|
3004 phy_data |= (1 << 2); |
|
3005 e1e_wphy(hw, PHY_REG(770, 26), phy_data); |
|
3006 |
|
3007 e1e_rphy(hw, 22, &phy_data); |
|
3008 phy_data &= 0x0fff; |
|
3009 phy_data |= (1 << 14); |
|
3010 e1e_wphy(hw, 0x10, 0x2823); |
|
3011 e1e_wphy(hw, 0x11, 0x0003); |
|
3012 e1e_wphy(hw, 22, phy_data); |
|
3013 } |
|
3014 |
|
3015 /* Setup buffer sizes */ |
|
3016 rctl &= ~E1000_RCTL_SZ_4096; |
|
3017 rctl |= E1000_RCTL_BSEX; |
|
3018 switch (adapter->rx_buffer_len) { |
|
3019 case 2048: |
|
3020 default: |
|
3021 rctl |= E1000_RCTL_SZ_2048; |
|
3022 rctl &= ~E1000_RCTL_BSEX; |
|
3023 break; |
|
3024 case 4096: |
|
3025 rctl |= E1000_RCTL_SZ_4096; |
|
3026 break; |
|
3027 case 8192: |
|
3028 rctl |= E1000_RCTL_SZ_8192; |
|
3029 break; |
|
3030 case 16384: |
|
3031 rctl |= E1000_RCTL_SZ_16384; |
|
3032 break; |
|
3033 } |
|
3034 |
|
3035 /* Enable Extended Status in all Receive Descriptors */ |
|
3036 rfctl = er32(RFCTL); |
|
3037 rfctl |= E1000_RFCTL_EXTEN; |
|
3038 ew32(RFCTL, rfctl); |
|
3039 |
|
3040 /* |
|
3041 * 82571 and greater support packet-split where the protocol |
|
3042 * header is placed in skb->data and the packet data is |
|
3043 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
3044 * In the case of a non-split, skb->data is linearly filled, |
|
3045 * followed by the page buffers. Therefore, skb->data is |
|
3046 * sized to hold the largest protocol header. |
|
3047 * |
|
3048 * allocations using alloc_page take too long for regular MTU |
|
3049 * so only enable packet split for jumbo frames |
|
3050 * |
|
3051 * Using pages when the page size is greater than 16k wastes |
|
3052 * a lot of memory, since we allocate 3 pages at all times |
|
3053 * per packet. |
|
3054 */ |
|
3055 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
3056 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
|
3057 adapter->rx_ps_pages = pages; |
|
3058 else |
|
3059 adapter->rx_ps_pages = 0; |
|
3060 |
|
3061 if (adapter->rx_ps_pages) { |
|
3062 u32 psrctl = 0; |
|
3063 |
|
3064 /* Enable Packet split descriptors */ |
|
3065 rctl |= E1000_RCTL_DTYP_PS; |
|
3066 |
|
3067 psrctl |= adapter->rx_ps_bsize0 >> |
|
3068 E1000_PSRCTL_BSIZE0_SHIFT; |
|
3069 |
|
3070 switch (adapter->rx_ps_pages) { |
|
3071 case 3: |
|
3072 psrctl |= PAGE_SIZE << |
|
3073 E1000_PSRCTL_BSIZE3_SHIFT; |
|
3074 case 2: |
|
3075 psrctl |= PAGE_SIZE << |
|
3076 E1000_PSRCTL_BSIZE2_SHIFT; |
|
3077 case 1: |
|
3078 psrctl |= PAGE_SIZE >> |
|
3079 E1000_PSRCTL_BSIZE1_SHIFT; |
|
3080 break; |
|
3081 } |
|
3082 |
|
3083 ew32(PSRCTL, psrctl); |
|
3084 } |
|
3085 |
|
3086 /* This is useful for sniffing bad packets. */ |
|
3087 if (adapter->netdev->features & NETIF_F_RXALL) { |
|
3088 /* UPE and MPE will be handled by normal PROMISC logic |
|
3089 * in e1000e_set_rx_mode */ |
|
3090 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
|
3091 E1000_RCTL_BAM | /* RX All Bcast Pkts */ |
|
3092 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ |
|
3093 |
|
3094 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ |
|
3095 E1000_RCTL_DPF | /* Allow filtered pause */ |
|
3096 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ |
|
3097 /* Do not mess with E1000_CTRL_VME, it affects transmit as well, |
|
3098 * and that breaks VLANs. |
|
3099 */ |
|
3100 } |
|
3101 |
|
3102 ew32(RCTL, rctl); |
|
3103 /* just started the receive unit, no need to restart */ |
|
3104 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
3105 } |
|
3106 |
|
3107 /** |
|
3108 * e1000_configure_rx - Configure Receive Unit after Reset |
|
3109 * @adapter: board private structure |
|
3110 * |
|
3111 * Configure the Rx unit of the MAC after a reset. |
|
3112 **/ |
|
3113 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
3114 { |
|
3115 struct e1000_hw *hw = &adapter->hw; |
|
3116 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3117 u64 rdba; |
|
3118 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
3119 |
|
3120 if (adapter->rx_ps_pages) { |
|
3121 /* this is a 32 byte descriptor */ |
|
3122 rdlen = rx_ring->count * |
|
3123 sizeof(union e1000_rx_desc_packet_split); |
|
3124 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
3125 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
3126 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3127 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3128 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
3129 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
3130 } else { |
|
3131 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3132 adapter->clean_rx = e1000_clean_rx_irq; |
|
3133 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
3134 } |
|
3135 |
|
3136 /* disable receives while setting up the descriptors */ |
|
3137 rctl = er32(RCTL); |
|
3138 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3139 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3140 e1e_flush(); |
|
3141 usleep_range(10000, 20000); |
|
3142 |
|
3143 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
3144 /* |
|
3145 * set the writeback threshold (only takes effect if the RDTR |
|
3146 * is set). set GRAN=1 and write back up to 0x4 worth, and |
|
3147 * enable prefetching of 0x20 Rx descriptors |
|
3148 * granularity = 01 |
|
3149 * wthresh = 04, |
|
3150 * hthresh = 04, |
|
3151 * pthresh = 0x20 |
|
3152 */ |
|
3153 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3154 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3155 |
|
3156 /* |
|
3157 * override the delay timers for enabling bursting, only if |
|
3158 * the value was not set by the user via module options |
|
3159 */ |
|
3160 if (adapter->rx_int_delay == DEFAULT_RDTR) |
|
3161 adapter->rx_int_delay = BURST_RDTR; |
|
3162 if (adapter->rx_abs_int_delay == DEFAULT_RADV) |
|
3163 adapter->rx_abs_int_delay = BURST_RADV; |
|
3164 } |
|
3165 |
|
3166 /* set the Receive Delay Timer Register */ |
|
3167 ew32(RDTR, adapter->rx_int_delay); |
|
3168 |
|
3169 /* irq moderation */ |
|
3170 ew32(RADV, adapter->rx_abs_int_delay); |
|
3171 if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
|
3172 e1000e_write_itr(adapter, adapter->itr); |
|
3173 |
|
3174 ctrl_ext = er32(CTRL_EXT); |
|
3175 /* Auto-Mask interrupts upon ICR access */ |
|
3176 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
3177 ew32(IAM, 0xffffffff); |
|
3178 ew32(CTRL_EXT, ctrl_ext); |
|
3179 e1e_flush(); |
|
3180 |
|
3181 /* |
|
3182 * Setup the HW Rx Head and Tail Descriptor Pointers and |
|
3183 * the Base and Length of the Rx Descriptor Ring |
|
3184 */ |
|
3185 rdba = rx_ring->dma; |
|
3186 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
|
3187 ew32(RDBAH(0), (rdba >> 32)); |
|
3188 ew32(RDLEN(0), rdlen); |
|
3189 ew32(RDH(0), 0); |
|
3190 ew32(RDT(0), 0); |
|
3191 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0); |
|
3192 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0); |
|
3193 |
|
3194 /* Enable Receive Checksum Offload for TCP and UDP */ |
|
3195 rxcsum = er32(RXCSUM); |
|
3196 if (adapter->netdev->features & NETIF_F_RXCSUM) |
|
3197 rxcsum |= E1000_RXCSUM_TUOFL; |
|
3198 else |
|
3199 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
3200 ew32(RXCSUM, rxcsum); |
|
3201 |
|
3202 if (adapter->hw.mac.type == e1000_pch2lan) { |
|
3203 /* |
|
3204 * With jumbo frames, excessive C-state transition |
|
3205 * latencies result in dropped transactions. |
|
3206 */ |
|
3207 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3208 u32 rxdctl = er32(RXDCTL(0)); |
|
3209 ew32(RXDCTL(0), rxdctl | 0x3); |
|
3210 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55); |
|
3211 } else { |
|
3212 pm_qos_update_request(&adapter->netdev->pm_qos_req, |
|
3213 PM_QOS_DEFAULT_VALUE); |
|
3214 } |
|
3215 } |
|
3216 |
|
3217 /* Enable Receives */ |
|
3218 ew32(RCTL, rctl); |
|
3219 } |
|
3220 |
|
3221 /** |
|
3222 * e1000e_write_mc_addr_list - write multicast addresses to MTA |
|
3223 * @netdev: network interface device structure |
|
3224 * |
|
3225 * Writes multicast address list to the MTA hash table. |
|
3226 * Returns: -ENOMEM on failure |
|
3227 * 0 on no addresses written |
|
3228 * X on writing X addresses to MTA |
|
3229 */ |
|
3230 static int e1000e_write_mc_addr_list(struct net_device *netdev) |
|
3231 { |
|
3232 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3233 struct e1000_hw *hw = &adapter->hw; |
|
3234 struct netdev_hw_addr *ha; |
|
3235 u8 *mta_list; |
|
3236 int i; |
|
3237 |
|
3238 if (netdev_mc_empty(netdev)) { |
|
3239 /* nothing to program, so clear mc list */ |
|
3240 hw->mac.ops.update_mc_addr_list(hw, NULL, 0); |
|
3241 return 0; |
|
3242 } |
|
3243 |
|
3244 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); |
|
3245 if (!mta_list) |
|
3246 return -ENOMEM; |
|
3247 |
|
3248 /* update_mc_addr_list expects a packed array of only addresses. */ |
|
3249 i = 0; |
|
3250 netdev_for_each_mc_addr(ha, netdev) |
|
3251 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
|
3252 |
|
3253 hw->mac.ops.update_mc_addr_list(hw, mta_list, i); |
|
3254 kfree(mta_list); |
|
3255 |
|
3256 return netdev_mc_count(netdev); |
|
3257 } |
|
3258 |
|
3259 /** |
|
3260 * e1000e_write_uc_addr_list - write unicast addresses to RAR table |
|
3261 * @netdev: network interface device structure |
|
3262 * |
|
3263 * Writes unicast address list to the RAR table. |
|
3264 * Returns: -ENOMEM on failure/insufficient address space |
|
3265 * 0 on no addresses written |
|
3266 * X on writing X addresses to the RAR table |
|
3267 **/ |
|
3268 static int e1000e_write_uc_addr_list(struct net_device *netdev) |
|
3269 { |
|
3270 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3271 struct e1000_hw *hw = &adapter->hw; |
|
3272 unsigned int rar_entries = hw->mac.rar_entry_count; |
|
3273 int count = 0; |
|
3274 |
|
3275 /* save a rar entry for our hardware address */ |
|
3276 rar_entries--; |
|
3277 |
|
3278 /* save a rar entry for the LAA workaround */ |
|
3279 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) |
|
3280 rar_entries--; |
|
3281 |
|
3282 /* return ENOMEM indicating insufficient memory for addresses */ |
|
3283 if (netdev_uc_count(netdev) > rar_entries) |
|
3284 return -ENOMEM; |
|
3285 |
|
3286 if (!netdev_uc_empty(netdev) && rar_entries) { |
|
3287 struct netdev_hw_addr *ha; |
|
3288 |
|
3289 /* |
|
3290 * write the addresses in reverse order to avoid write |
|
3291 * combining |
|
3292 */ |
|
3293 netdev_for_each_uc_addr(ha, netdev) { |
|
3294 if (!rar_entries) |
|
3295 break; |
|
3296 hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); |
|
3297 count++; |
|
3298 } |
|
3299 } |
|
3300 |
|
3301 /* zero out the remaining RAR entries not used above */ |
|
3302 for (; rar_entries > 0; rar_entries--) { |
|
3303 ew32(RAH(rar_entries), 0); |
|
3304 ew32(RAL(rar_entries), 0); |
|
3305 } |
|
3306 e1e_flush(); |
|
3307 |
|
3308 return count; |
|
3309 } |
|
3310 |
|
3311 /** |
|
3312 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set |
|
3313 * @netdev: network interface device structure |
|
3314 * |
|
3315 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast |
|
3316 * address list or the network interface flags are updated. This routine is |
|
3317 * responsible for configuring the hardware for proper unicast, multicast, |
|
3318 * promiscuous mode, and all-multi behavior. |
|
3319 **/ |
|
3320 static void e1000e_set_rx_mode(struct net_device *netdev) |
|
3321 { |
|
3322 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3323 struct e1000_hw *hw = &adapter->hw; |
|
3324 u32 rctl; |
|
3325 |
|
3326 /* Check for Promiscuous and All Multicast modes */ |
|
3327 rctl = er32(RCTL); |
|
3328 |
|
3329 /* clear the affected bits */ |
|
3330 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3331 |
|
3332 if (netdev->flags & IFF_PROMISC) { |
|
3333 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3334 /* Do not hardware filter VLANs in promisc mode */ |
|
3335 e1000e_vlan_filter_disable(adapter); |
|
3336 } else { |
|
3337 int count; |
|
3338 |
|
3339 if (netdev->flags & IFF_ALLMULTI) { |
|
3340 rctl |= E1000_RCTL_MPE; |
|
3341 } else { |
|
3342 /* |
|
3343 * Write addresses to the MTA, if the attempt fails |
|
3344 * then we should just turn on promiscuous mode so |
|
3345 * that we can at least receive multicast traffic |
|
3346 */ |
|
3347 count = e1000e_write_mc_addr_list(netdev); |
|
3348 if (count < 0) |
|
3349 rctl |= E1000_RCTL_MPE; |
|
3350 } |
|
3351 e1000e_vlan_filter_enable(adapter); |
|
3352 /* |
|
3353 * Write addresses to available RAR registers, if there is not |
|
3354 * sufficient space to store all the addresses then enable |
|
3355 * unicast promiscuous mode |
|
3356 */ |
|
3357 count = e1000e_write_uc_addr_list(netdev); |
|
3358 if (count < 0) |
|
3359 rctl |= E1000_RCTL_UPE; |
|
3360 } |
|
3361 |
|
3362 ew32(RCTL, rctl); |
|
3363 |
|
3364 if (netdev->features & NETIF_F_HW_VLAN_RX) |
|
3365 e1000e_vlan_strip_enable(adapter); |
|
3366 else |
|
3367 e1000e_vlan_strip_disable(adapter); |
|
3368 } |
|
3369 |
|
3370 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter) |
|
3371 { |
|
3372 struct e1000_hw *hw = &adapter->hw; |
|
3373 u32 mrqc, rxcsum; |
|
3374 int i; |
|
3375 static const u32 rsskey[10] = { |
|
3376 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0, |
|
3377 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe |
|
3378 }; |
|
3379 |
|
3380 /* Fill out hash function seed */ |
|
3381 for (i = 0; i < 10; i++) |
|
3382 ew32(RSSRK(i), rsskey[i]); |
|
3383 |
|
3384 /* Direct all traffic to queue 0 */ |
|
3385 for (i = 0; i < 32; i++) |
|
3386 ew32(RETA(i), 0); |
|
3387 |
|
3388 /* |
|
3389 * Disable raw packet checksumming so that RSS hash is placed in |
|
3390 * descriptor on writeback. |
|
3391 */ |
|
3392 rxcsum = er32(RXCSUM); |
|
3393 rxcsum |= E1000_RXCSUM_PCSD; |
|
3394 |
|
3395 ew32(RXCSUM, rxcsum); |
|
3396 |
|
3397 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 | |
|
3398 E1000_MRQC_RSS_FIELD_IPV4_TCP | |
|
3399 E1000_MRQC_RSS_FIELD_IPV6 | |
|
3400 E1000_MRQC_RSS_FIELD_IPV6_TCP | |
|
3401 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
|
3402 |
|
3403 ew32(MRQC, mrqc); |
|
3404 } |
|
3405 |
|
3406 /** |
|
3407 * e1000_configure - configure the hardware for Rx and Tx |
|
3408 * @adapter: private board structure |
|
3409 **/ |
|
3410 static void e1000_configure(struct e1000_adapter *adapter) |
|
3411 { |
|
3412 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3413 |
|
3414 e1000e_set_rx_mode(adapter->netdev); |
|
3415 |
|
3416 e1000_restore_vlan(adapter); |
|
3417 e1000_init_manageability_pt(adapter); |
|
3418 |
|
3419 e1000_configure_tx(adapter); |
|
3420 |
|
3421 if (adapter->netdev->features & NETIF_F_RXHASH) |
|
3422 e1000e_setup_rss_hash(adapter); |
|
3423 e1000_setup_rctl(adapter); |
|
3424 e1000_configure_rx(adapter); |
|
3425 if (adapter->ecdev) { |
|
3426 adapter->alloc_rx_buf(rx_ring, adapter->rx_ring->count, GFP_KERNEL); |
|
3427 } else { |
|
3428 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), |
|
3429 GFP_KERNEL); |
|
3430 } |
|
3431 } |
|
3432 |
|
3433 /** |
|
3434 * e1000e_power_up_phy - restore link in case the phy was powered down |
|
3435 * @adapter: address of board private structure |
|
3436 * |
|
3437 * The phy may be powered down to save power and turn off link when the |
|
3438 * driver is unloaded and wake on lan is not enabled (among others) |
|
3439 * *** this routine MUST be followed by a call to e1000e_reset *** |
|
3440 **/ |
|
3441 void e1000e_power_up_phy(struct e1000_adapter *adapter) |
|
3442 { |
|
3443 if (adapter->hw.phy.ops.power_up) |
|
3444 adapter->hw.phy.ops.power_up(&adapter->hw); |
|
3445 |
|
3446 adapter->hw.mac.ops.setup_link(&adapter->hw); |
|
3447 } |
|
3448 |
|
3449 /** |
|
3450 * e1000_power_down_phy - Power down the PHY |
|
3451 * |
|
3452 * Power down the PHY so no link is implied when interface is down. |
|
3453 * The PHY cannot be powered down if management or WoL is active. |
|
3454 */ |
|
3455 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
3456 { |
|
3457 /* WoL is enabled */ |
|
3458 if (adapter->wol) |
|
3459 return; |
|
3460 |
|
3461 if (adapter->hw.phy.ops.power_down) |
|
3462 adapter->hw.phy.ops.power_down(&adapter->hw); |
|
3463 } |
|
3464 |
|
3465 /** |
|
3466 * e1000e_reset - bring the hardware into a known good state |
|
3467 * |
|
3468 * This function boots the hardware and enables some settings that |
|
3469 * require a configuration cycle of the hardware - those cannot be |
|
3470 * set/changed during runtime. After reset the device needs to be |
|
3471 * properly configured for Rx, Tx etc. |
|
3472 */ |
|
3473 void e1000e_reset(struct e1000_adapter *adapter) |
|
3474 { |
|
3475 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
3476 struct e1000_fc_info *fc = &adapter->hw.fc; |
|
3477 struct e1000_hw *hw = &adapter->hw; |
|
3478 u32 tx_space, min_tx_space, min_rx_space; |
|
3479 u32 pba = adapter->pba; |
|
3480 u16 hwm; |
|
3481 |
|
3482 /* reset Packet Buffer Allocation to default */ |
|
3483 ew32(PBA, pba); |
|
3484 |
|
3485 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3486 /* |
|
3487 * To maintain wire speed transmits, the Tx FIFO should be |
|
3488 * large enough to accommodate two full transmit packets, |
|
3489 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
3490 * the Rx FIFO should be large enough to accommodate at least |
|
3491 * one full receive packet and is similarly rounded up and |
|
3492 * expressed in KB. |
|
3493 */ |
|
3494 pba = er32(PBA); |
|
3495 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
3496 tx_space = pba >> 16; |
|
3497 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
3498 pba &= 0xffff; |
|
3499 /* |
|
3500 * the Tx fifo also stores 16 bytes of information about the Tx |
|
3501 * but don't include ethernet FCS because hardware appends it |
|
3502 */ |
|
3503 min_tx_space = (adapter->max_frame_size + |
|
3504 sizeof(struct e1000_tx_desc) - |
|
3505 ETH_FCS_LEN) * 2; |
|
3506 min_tx_space = ALIGN(min_tx_space, 1024); |
|
3507 min_tx_space >>= 10; |
|
3508 /* software strips receive CRC, so leave room for it */ |
|
3509 min_rx_space = adapter->max_frame_size; |
|
3510 min_rx_space = ALIGN(min_rx_space, 1024); |
|
3511 min_rx_space >>= 10; |
|
3512 |
|
3513 /* |
|
3514 * If current Tx allocation is less than the min Tx FIFO size, |
|
3515 * and the min Tx FIFO size is less than the current Rx FIFO |
|
3516 * allocation, take space away from current Rx allocation |
|
3517 */ |
|
3518 if ((tx_space < min_tx_space) && |
|
3519 ((min_tx_space - tx_space) < pba)) { |
|
3520 pba -= min_tx_space - tx_space; |
|
3521 |
|
3522 /* |
|
3523 * if short on Rx space, Rx wins and must trump Tx |
|
3524 * adjustment or use Early Receive if available |
|
3525 */ |
|
3526 if (pba < min_rx_space) |
|
3527 pba = min_rx_space; |
|
3528 } |
|
3529 |
|
3530 ew32(PBA, pba); |
|
3531 } |
|
3532 |
|
3533 /* |
|
3534 * flow control settings |
|
3535 * |
|
3536 * The high water mark must be low enough to fit one full frame |
|
3537 * (or the size used for early receive) above it in the Rx FIFO. |
|
3538 * Set it to the lower of: |
|
3539 * - 90% of the Rx FIFO size, and |
|
3540 * - the full Rx FIFO size minus one full frame |
|
3541 */ |
|
3542 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
|
3543 fc->pause_time = 0xFFFF; |
|
3544 else |
|
3545 fc->pause_time = E1000_FC_PAUSE_TIME; |
|
3546 fc->send_xon = true; |
|
3547 fc->current_mode = fc->requested_mode; |
|
3548 |
|
3549 switch (hw->mac.type) { |
|
3550 case e1000_ich9lan: |
|
3551 case e1000_ich10lan: |
|
3552 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3553 pba = 14; |
|
3554 ew32(PBA, pba); |
|
3555 fc->high_water = 0x2800; |
|
3556 fc->low_water = fc->high_water - 8; |
|
3557 break; |
|
3558 } |
|
3559 /* fall-through */ |
|
3560 default: |
|
3561 hwm = min(((pba << 10) * 9 / 10), |
|
3562 ((pba << 10) - adapter->max_frame_size)); |
|
3563 |
|
3564 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
|
3565 fc->low_water = fc->high_water - 8; |
|
3566 break; |
|
3567 case e1000_pchlan: |
|
3568 /* |
|
3569 * Workaround PCH LOM adapter hangs with certain network |
|
3570 * loads. If hangs persist, try disabling Tx flow control. |
|
3571 */ |
|
3572 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3573 fc->high_water = 0x3500; |
|
3574 fc->low_water = 0x1500; |
|
3575 } else { |
|
3576 fc->high_water = 0x5000; |
|
3577 fc->low_water = 0x3000; |
|
3578 } |
|
3579 fc->refresh_time = 0x1000; |
|
3580 break; |
|
3581 case e1000_pch2lan: |
|
3582 case e1000_pch_lpt: |
|
3583 fc->high_water = 0x05C20; |
|
3584 fc->low_water = 0x05048; |
|
3585 fc->pause_time = 0x0650; |
|
3586 fc->refresh_time = 0x0400; |
|
3587 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3588 pba = 14; |
|
3589 ew32(PBA, pba); |
|
3590 } |
|
3591 break; |
|
3592 } |
|
3593 |
|
3594 /* |
|
3595 * Alignment of Tx data is on an arbitrary byte boundary with the |
|
3596 * maximum size per Tx descriptor limited only to the transmit |
|
3597 * allocation of the packet buffer minus 96 bytes with an upper |
|
3598 * limit of 24KB due to receive synchronization limitations. |
|
3599 */ |
|
3600 adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96, |
|
3601 24 << 10); |
|
3602 |
|
3603 /* |
|
3604 * Disable Adaptive Interrupt Moderation if 2 full packets cannot |
|
3605 * fit in receive buffer. |
|
3606 */ |
|
3607 if (adapter->itr_setting & 0x3) { |
|
3608 if ((adapter->max_frame_size * 2) > (pba << 10)) { |
|
3609 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
|
3610 dev_info(&adapter->pdev->dev, |
|
3611 "Interrupt Throttle Rate turned off\n"); |
|
3612 adapter->flags2 |= FLAG2_DISABLE_AIM; |
|
3613 e1000e_write_itr(adapter, 0); |
|
3614 } |
|
3615 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
3616 dev_info(&adapter->pdev->dev, |
|
3617 "Interrupt Throttle Rate turned on\n"); |
|
3618 adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
|
3619 adapter->itr = 20000; |
|
3620 e1000e_write_itr(adapter, adapter->itr); |
|
3621 } |
|
3622 } |
|
3623 |
|
3624 /* Allow time for pending master requests to run */ |
|
3625 mac->ops.reset_hw(hw); |
|
3626 |
|
3627 /* |
|
3628 * For parts with AMT enabled, let the firmware know |
|
3629 * that the network interface is in control |
|
3630 */ |
|
3631 if (adapter->flags & FLAG_HAS_AMT) |
|
3632 e1000e_get_hw_control(adapter); |
|
3633 |
|
3634 ew32(WUC, 0); |
|
3635 |
|
3636 if (mac->ops.init_hw(hw)) |
|
3637 e_err("Hardware Error\n"); |
|
3638 |
|
3639 e1000_update_mng_vlan(adapter); |
|
3640 |
|
3641 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
3642 ew32(VET, ETH_P_8021Q); |
|
3643 |
|
3644 e1000e_reset_adaptive(hw); |
|
3645 |
|
3646 if (!netif_running(adapter->netdev) && |
|
3647 !test_bit(__E1000_TESTING, &adapter->state)) { |
|
3648 e1000_power_down_phy(adapter); |
|
3649 return; |
|
3650 } |
|
3651 |
|
3652 e1000_get_phy_info(hw); |
|
3653 |
|
3654 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
|
3655 !(adapter->flags & FLAG_SMART_POWER_DOWN)) { |
|
3656 u16 phy_data = 0; |
|
3657 /* |
|
3658 * speed up time to link by disabling smart power down, ignore |
|
3659 * the return value of this function because there is nothing |
|
3660 * different we would do if it failed |
|
3661 */ |
|
3662 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
|
3663 phy_data &= ~IGP02E1000_PM_SPD; |
|
3664 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); |
|
3665 } |
|
3666 } |
|
3667 |
|
3668 int e1000e_up(struct e1000_adapter *adapter) |
|
3669 { |
|
3670 struct e1000_hw *hw = &adapter->hw; |
|
3671 |
|
3672 /* hardware has been reset, we need to reload some things */ |
|
3673 e1000_configure(adapter); |
|
3674 |
|
3675 clear_bit(__E1000_DOWN, &adapter->state); |
|
3676 |
|
3677 if (!adapter->ecdev) { |
|
3678 if (adapter->msix_entries) |
|
3679 e1000_configure_msix(adapter); |
|
3680 |
|
3681 e1000_irq_enable(adapter); |
|
3682 |
|
3683 netif_start_queue(adapter->netdev); |
|
3684 |
|
3685 /* fire a link change interrupt to start the watchdog */ |
|
3686 if (adapter->msix_entries) |
|
3687 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3688 else |
|
3689 ew32(ICS, E1000_ICS_LSC); |
|
3690 } |
|
3691 |
|
3692 return 0; |
|
3693 } |
|
3694 |
|
3695 static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
|
3696 { |
|
3697 struct e1000_hw *hw = &adapter->hw; |
|
3698 |
|
3699 if (!(adapter->flags2 & FLAG2_DMA_BURST)) |
|
3700 return; |
|
3701 |
|
3702 /* flush pending descriptor writebacks to memory */ |
|
3703 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
3704 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
3705 |
|
3706 /* execute the writes immediately */ |
|
3707 e1e_flush(); |
|
3708 |
|
3709 /* |
|
3710 * due to rare timing issues, write to TIDV/RDTR again to ensure the |
|
3711 * write is successful |
|
3712 */ |
|
3713 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
3714 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
3715 |
|
3716 /* execute the writes immediately */ |
|
3717 e1e_flush(); |
|
3718 } |
|
3719 |
|
3720 static void e1000e_update_stats(struct e1000_adapter *adapter); |
|
3721 |
|
3722 void e1000e_down(struct e1000_adapter *adapter) |
|
3723 { |
|
3724 struct net_device *netdev = adapter->netdev; |
|
3725 struct e1000_hw *hw = &adapter->hw; |
|
3726 u32 tctl, rctl; |
|
3727 |
|
3728 /* |
|
3729 * signal that we're down so the interrupt handler does not |
|
3730 * reschedule our watchdog timer |
|
3731 */ |
|
3732 set_bit(__E1000_DOWN, &adapter->state); |
|
3733 |
|
3734 /* disable receives in the hardware */ |
|
3735 rctl = er32(RCTL); |
|
3736 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3737 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3738 /* flush and sleep below */ |
|
3739 |
|
3740 if (!adapter->ecdev) |
|
3741 netif_stop_queue(netdev); |
|
3742 |
|
3743 /* disable transmits in the hardware */ |
|
3744 tctl = er32(TCTL); |
|
3745 tctl &= ~E1000_TCTL_EN; |
|
3746 ew32(TCTL, tctl); |
|
3747 |
|
3748 /* flush both disables and wait for them to finish */ |
|
3749 e1e_flush(); |
|
3750 usleep_range(10000, 20000); |
|
3751 |
|
3752 if (!adapter->ecdev) { |
|
3753 e1000_irq_disable(adapter); |
|
3754 |
|
3755 del_timer_sync(&adapter->watchdog_timer); |
|
3756 del_timer_sync(&adapter->phy_info_timer); |
|
3757 } |
|
3758 |
|
3759 if (adapter->ecdev) { |
|
3760 ecdev_set_link(adapter->ecdev, 0); |
|
3761 } |
|
3762 else { |
|
3763 netif_carrier_off(netdev); |
|
3764 } |
|
3765 |
|
3766 spin_lock(&adapter->stats64_lock); |
|
3767 e1000e_update_stats(adapter); |
|
3768 spin_unlock(&adapter->stats64_lock); |
|
3769 |
|
3770 e1000e_flush_descriptors(adapter); |
|
3771 e1000_clean_tx_ring(adapter->tx_ring); |
|
3772 e1000_clean_rx_ring(adapter->rx_ring); |
|
3773 |
|
3774 adapter->link_speed = 0; |
|
3775 adapter->link_duplex = 0; |
|
3776 |
|
3777 if (!pci_channel_offline(adapter->pdev)) |
|
3778 e1000e_reset(adapter); |
|
3779 |
|
3780 /* |
|
3781 * TODO: for power management, we could drop the link and |
|
3782 * pci_disable_device here. |
|
3783 */ |
|
3784 } |
|
3785 |
|
3786 void e1000e_reinit_locked(struct e1000_adapter *adapter) |
|
3787 { |
|
3788 might_sleep(); |
|
3789 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
3790 usleep_range(1000, 2000); |
|
3791 e1000e_down(adapter); |
|
3792 e1000e_up(adapter); |
|
3793 clear_bit(__E1000_RESETTING, &adapter->state); |
|
3794 } |
|
3795 |
|
3796 /** |
|
3797 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
3798 * @adapter: board private structure to initialize |
|
3799 * |
|
3800 * e1000_sw_init initializes the Adapter private data structure. |
|
3801 * Fields are initialized based on PCI device information and |
|
3802 * OS network device settings (MTU size). |
|
3803 **/ |
|
3804 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
3805 { |
|
3806 struct net_device *netdev = adapter->netdev; |
|
3807 |
|
3808 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
|
3809 adapter->rx_ps_bsize0 = 128; |
|
3810 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
|
3811 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
|
3812 adapter->tx_ring_count = E1000_DEFAULT_TXD; |
|
3813 adapter->rx_ring_count = E1000_DEFAULT_RXD; |
|
3814 |
|
3815 spin_lock_init(&adapter->stats64_lock); |
|
3816 |
|
3817 e1000e_set_interrupt_capability(adapter); |
|
3818 |
|
3819 if (e1000_alloc_queues(adapter)) |
|
3820 return -ENOMEM; |
|
3821 |
|
3822 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
3823 e1000_irq_disable(adapter); |
|
3824 |
|
3825 set_bit(__E1000_DOWN, &adapter->state); |
|
3826 return 0; |
|
3827 } |
|
3828 |
|
3829 /** |
|
3830 * e1000_intr_msi_test - Interrupt Handler |
|
3831 * @irq: interrupt number |
|
3832 * @data: pointer to a network interface device structure |
|
3833 **/ |
|
3834 static irqreturn_t e1000_intr_msi_test(int irq, void *data) |
|
3835 { |
|
3836 struct net_device *netdev = data; |
|
3837 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3838 struct e1000_hw *hw = &adapter->hw; |
|
3839 u32 icr = er32(ICR); |
|
3840 |
|
3841 e_dbg("icr is %08X\n", icr); |
|
3842 if (icr & E1000_ICR_RXSEQ) { |
|
3843 adapter->flags &= ~FLAG_MSI_TEST_FAILED; |
|
3844 wmb(); |
|
3845 } |
|
3846 |
|
3847 return IRQ_HANDLED; |
|
3848 } |
|
3849 |
|
3850 /** |
|
3851 * e1000_test_msi_interrupt - Returns 0 for successful test |
|
3852 * @adapter: board private struct |
|
3853 * |
|
3854 * code flow taken from tg3.c |
|
3855 **/ |
|
3856 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) |
|
3857 { |
|
3858 struct net_device *netdev = adapter->netdev; |
|
3859 struct e1000_hw *hw = &adapter->hw; |
|
3860 int err; |
|
3861 |
|
3862 /* poll_enable hasn't been called yet, so don't need disable */ |
|
3863 /* clear any pending events */ |
|
3864 er32(ICR); |
|
3865 |
|
3866 /* free the real vector and request a test handler */ |
|
3867 e1000_free_irq(adapter); |
|
3868 e1000e_reset_interrupt_capability(adapter); |
|
3869 |
|
3870 /* Assume that the test fails, if it succeeds then the test |
|
3871 * MSI irq handler will unset this flag */ |
|
3872 adapter->flags |= FLAG_MSI_TEST_FAILED; |
|
3873 |
|
3874 err = pci_enable_msi(adapter->pdev); |
|
3875 if (err) |
|
3876 goto msi_test_failed; |
|
3877 |
|
3878 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
|
3879 netdev->name, netdev); |
|
3880 if (err) { |
|
3881 pci_disable_msi(adapter->pdev); |
|
3882 goto msi_test_failed; |
|
3883 } |
|
3884 |
|
3885 wmb(); |
|
3886 |
|
3887 e1000_irq_enable(adapter); |
|
3888 |
|
3889 /* fire an unusual interrupt on the test handler */ |
|
3890 ew32(ICS, E1000_ICS_RXSEQ); |
|
3891 e1e_flush(); |
|
3892 msleep(100); |
|
3893 |
|
3894 e1000_irq_disable(adapter); |
|
3895 |
|
3896 rmb(); |
|
3897 |
|
3898 if (adapter->flags & FLAG_MSI_TEST_FAILED) { |
|
3899 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
3900 e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
|
3901 } else { |
|
3902 e_dbg("MSI interrupt test succeeded!\n"); |
|
3903 } |
|
3904 |
|
3905 free_irq(adapter->pdev->irq, netdev); |
|
3906 pci_disable_msi(adapter->pdev); |
|
3907 |
|
3908 msi_test_failed: |
|
3909 e1000e_set_interrupt_capability(adapter); |
|
3910 return e1000_request_irq(adapter); |
|
3911 } |
|
3912 |
|
3913 /** |
|
3914 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored |
|
3915 * @adapter: board private struct |
|
3916 * |
|
3917 * code flow taken from tg3.c, called with e1000 interrupts disabled. |
|
3918 **/ |
|
3919 static int e1000_test_msi(struct e1000_adapter *adapter) |
|
3920 { |
|
3921 int err; |
|
3922 u16 pci_cmd; |
|
3923 |
|
3924 if (!(adapter->flags & FLAG_MSI_ENABLED)) |
|
3925 return 0; |
|
3926 |
|
3927 /* disable SERR in case the MSI write causes a master abort */ |
|
3928 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3929 if (pci_cmd & PCI_COMMAND_SERR) |
|
3930 pci_write_config_word(adapter->pdev, PCI_COMMAND, |
|
3931 pci_cmd & ~PCI_COMMAND_SERR); |
|
3932 |
|
3933 err = e1000_test_msi_interrupt(adapter); |
|
3934 |
|
3935 /* re-enable SERR */ |
|
3936 if (pci_cmd & PCI_COMMAND_SERR) { |
|
3937 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3938 pci_cmd |= PCI_COMMAND_SERR; |
|
3939 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); |
|
3940 } |
|
3941 |
|
3942 return err; |
|
3943 } |
|
3944 |
|
3945 /** |
|
3946 * e1000_open - Called when a network interface is made active |
|
3947 * @netdev: network interface device structure |
|
3948 * |
|
3949 * Returns 0 on success, negative value on failure |
|
3950 * |
|
3951 * The open entry point is called when a network interface is made |
|
3952 * active by the system (IFF_UP). At this point all resources needed |
|
3953 * for transmit and receive operations are allocated, the interrupt |
|
3954 * handler is registered with the OS, the watchdog timer is started, |
|
3955 * and the stack is notified that the interface is ready. |
|
3956 **/ |
|
3957 static int e1000_open(struct net_device *netdev) |
|
3958 { |
|
3959 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3960 struct e1000_hw *hw = &adapter->hw; |
|
3961 struct pci_dev *pdev = adapter->pdev; |
|
3962 int err; |
|
3963 |
|
3964 /* disallow open during test */ |
|
3965 if (test_bit(__E1000_TESTING, &adapter->state)) |
|
3966 return -EBUSY; |
|
3967 |
|
3968 pm_runtime_get_sync(&pdev->dev); |
|
3969 |
|
3970 if (adapter->ecdev) { |
|
3971 ecdev_set_link(adapter->ecdev, 0); |
|
3972 } else { |
|
3973 netif_carrier_off(netdev); |
|
3974 } |
|
3975 |
|
3976 /* allocate transmit descriptors */ |
|
3977 err = e1000e_setup_tx_resources(adapter->tx_ring); |
|
3978 if (err) |
|
3979 goto err_setup_tx; |
|
3980 |
|
3981 /* allocate receive descriptors */ |
|
3982 err = e1000e_setup_rx_resources(adapter->rx_ring); |
|
3983 if (err) |
|
3984 goto err_setup_rx; |
|
3985 |
|
3986 /* |
|
3987 * If AMT is enabled, let the firmware know that the network |
|
3988 * interface is now open and reset the part to a known state. |
|
3989 */ |
|
3990 if (adapter->flags & FLAG_HAS_AMT) { |
|
3991 e1000e_get_hw_control(adapter); |
|
3992 e1000e_reset(adapter); |
|
3993 } |
|
3994 |
|
3995 e1000e_power_up_phy(adapter); |
|
3996 |
|
3997 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
3998 if ((adapter->hw.mng_cookie.status & |
|
3999 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
|
4000 e1000_update_mng_vlan(adapter); |
|
4001 |
|
4002 /* DMA latency requirement to workaround jumbo issue */ |
|
4003 if (adapter->hw.mac.type == e1000_pch2lan) |
|
4004 pm_qos_add_request(&adapter->netdev->pm_qos_req, |
|
4005 PM_QOS_CPU_DMA_LATENCY, |
|
4006 PM_QOS_DEFAULT_VALUE); |
|
4007 |
|
4008 /* |
|
4009 * before we allocate an interrupt, we must be ready to handle it. |
|
4010 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
4011 * as soon as we call pci_request_irq, so we have to setup our |
|
4012 * clean_rx handler before we do so. |
|
4013 */ |
|
4014 e1000_configure(adapter); |
|
4015 |
|
4016 err = e1000_request_irq(adapter); |
|
4017 if (err) |
|
4018 goto err_req_irq; |
|
4019 |
|
4020 /* |
|
4021 * Work around PCIe errata with MSI interrupts causing some chipsets to |
|
4022 * ignore e1000e MSI messages, which means we need to test our MSI |
|
4023 * interrupt now |
|
4024 */ |
|
4025 if (!adapter->ecdev && adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
|
4026 err = e1000_test_msi(adapter); |
|
4027 if (err) { |
|
4028 e_err("Interrupt allocation failed\n"); |
|
4029 goto err_req_irq; |
|
4030 } |
|
4031 } |
|
4032 |
|
4033 /* From here on the code is the same as e1000e_up() */ |
|
4034 clear_bit(__E1000_DOWN, &adapter->state); |
|
4035 |
|
4036 if (!adapter->ecdev) { |
|
4037 napi_enable(&adapter->napi); |
|
4038 |
|
4039 e1000_irq_enable(adapter); |
|
4040 } |
|
4041 |
|
4042 adapter->tx_hang_recheck = false; |
|
4043 |
|
4044 if (!adapter->ecdev) { |
|
4045 netif_start_queue(netdev); |
|
4046 } |
|
4047 |
|
4048 adapter->idle_check = true; |
|
4049 pm_runtime_put(&pdev->dev); |
|
4050 |
|
4051 /* fire a link status change interrupt to start the watchdog */ |
|
4052 if (adapter->msix_entries) |
|
4053 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
4054 else |
|
4055 ew32(ICS, E1000_ICS_LSC); |
|
4056 |
|
4057 return 0; |
|
4058 |
|
4059 err_req_irq: |
|
4060 e1000e_release_hw_control(adapter); |
|
4061 e1000_power_down_phy(adapter); |
|
4062 e1000e_free_rx_resources(adapter->rx_ring); |
|
4063 err_setup_rx: |
|
4064 e1000e_free_tx_resources(adapter->tx_ring); |
|
4065 err_setup_tx: |
|
4066 e1000e_reset(adapter); |
|
4067 pm_runtime_put_sync(&pdev->dev); |
|
4068 |
|
4069 return err; |
|
4070 } |
|
4071 |
|
4072 /** |
|
4073 * e1000_close - Disables a network interface |
|
4074 * @netdev: network interface device structure |
|
4075 * |
|
4076 * Returns 0, this is not allowed to fail |
|
4077 * |
|
4078 * The close entry point is called when an interface is de-activated |
|
4079 * by the OS. The hardware is still under the drivers control, but |
|
4080 * needs to be disabled. A global MAC reset is issued to stop the |
|
4081 * hardware, and all transmit and receive resources are freed. |
|
4082 **/ |
|
4083 static int e1000_close(struct net_device *netdev) |
|
4084 { |
|
4085 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4086 struct pci_dev *pdev = adapter->pdev; |
|
4087 int count = E1000_CHECK_RESET_COUNT; |
|
4088 |
|
4089 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
4090 usleep_range(10000, 20000); |
|
4091 |
|
4092 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
4093 |
|
4094 pm_runtime_get_sync(&pdev->dev); |
|
4095 |
|
4096 if (!adapter->ecdev) { |
|
4097 napi_disable(&adapter->napi); |
|
4098 } |
|
4099 |
|
4100 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
4101 e1000e_down(adapter); |
|
4102 e1000_free_irq(adapter); |
|
4103 } |
|
4104 e1000_power_down_phy(adapter); |
|
4105 |
|
4106 e1000e_free_tx_resources(adapter->tx_ring); |
|
4107 e1000e_free_rx_resources(adapter->rx_ring); |
|
4108 |
|
4109 /* |
|
4110 * kill manageability vlan ID if supported, but not if a vlan with |
|
4111 * the same ID is registered on the host OS (let 8021q kill it) |
|
4112 */ |
|
4113 if (adapter->hw.mng_cookie.status & |
|
4114 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
|
4115 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4116 |
|
4117 /* |
|
4118 * If AMT is enabled, let the firmware know that the network |
|
4119 * interface is now closed |
|
4120 */ |
|
4121 if ((adapter->flags & FLAG_HAS_AMT) && |
|
4122 !test_bit(__E1000_TESTING, &adapter->state)) |
|
4123 e1000e_release_hw_control(adapter); |
|
4124 |
|
4125 if (adapter->hw.mac.type == e1000_pch2lan) |
|
4126 pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
|
4127 |
|
4128 pm_runtime_put_sync(&pdev->dev); |
|
4129 |
|
4130 return 0; |
|
4131 } |
|
4132 /** |
|
4133 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
4134 * @netdev: network interface device structure |
|
4135 * @p: pointer to an address structure |
|
4136 * |
|
4137 * Returns 0 on success, negative on failure |
|
4138 **/ |
|
4139 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
4140 { |
|
4141 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4142 struct e1000_hw *hw = &adapter->hw; |
|
4143 struct sockaddr *addr = p; |
|
4144 |
|
4145 if (!is_valid_ether_addr(addr->sa_data)) |
|
4146 return -EADDRNOTAVAIL; |
|
4147 |
|
4148 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
4149 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
|
4150 |
|
4151 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
|
4152 |
|
4153 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { |
|
4154 /* activate the work around */ |
|
4155 e1000e_set_laa_state_82571(&adapter->hw, 1); |
|
4156 |
|
4157 /* |
|
4158 * Hold a copy of the LAA in RAR[14] This is done so that |
|
4159 * between the time RAR[0] gets clobbered and the time it |
|
4160 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
4161 * of the RARs and no incoming packets directed to this port |
|
4162 * are dropped. Eventually the LAA will be in RAR[0] and |
|
4163 * RAR[14] |
|
4164 */ |
|
4165 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, |
|
4166 adapter->hw.mac.rar_entry_count - 1); |
|
4167 } |
|
4168 |
|
4169 return 0; |
|
4170 } |
|
4171 |
|
4172 /** |
|
4173 * e1000e_update_phy_task - work thread to update phy |
|
4174 * @work: pointer to our work struct |
|
4175 * |
|
4176 * this worker thread exists because we must acquire a |
|
4177 * semaphore to read the phy, which we could msleep while |
|
4178 * waiting for it, and we can't msleep in a timer. |
|
4179 **/ |
|
4180 static void e1000e_update_phy_task(struct work_struct *work) |
|
4181 { |
|
4182 struct e1000_adapter *adapter = container_of(work, |
|
4183 struct e1000_adapter, update_phy_task); |
|
4184 |
|
4185 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4186 return; |
|
4187 |
|
4188 e1000_get_phy_info(&adapter->hw); |
|
4189 } |
|
4190 |
|
4191 /* |
|
4192 * Need to wait a few seconds after link up to get diagnostic information from |
|
4193 * the phy |
|
4194 */ |
|
4195 static void e1000_update_phy_info(unsigned long data) |
|
4196 { |
|
4197 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4198 |
|
4199 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4200 return; |
|
4201 |
|
4202 schedule_work(&adapter->update_phy_task); |
|
4203 } |
|
4204 |
|
4205 /** |
|
4206 * e1000e_update_phy_stats - Update the PHY statistics counters |
|
4207 * @adapter: board private structure |
|
4208 * |
|
4209 * Read/clear the upper 16-bit PHY registers and read/accumulate lower |
|
4210 **/ |
|
4211 static void e1000e_update_phy_stats(struct e1000_adapter *adapter) |
|
4212 { |
|
4213 struct e1000_hw *hw = &adapter->hw; |
|
4214 s32 ret_val; |
|
4215 u16 phy_data; |
|
4216 |
|
4217 ret_val = hw->phy.ops.acquire(hw); |
|
4218 if (ret_val) |
|
4219 return; |
|
4220 |
|
4221 /* |
|
4222 * A page set is expensive so check if already on desired page. |
|
4223 * If not, set to the page with the PHY status registers. |
|
4224 */ |
|
4225 hw->phy.addr = 1; |
|
4226 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
4227 &phy_data); |
|
4228 if (ret_val) |
|
4229 goto release; |
|
4230 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
|
4231 ret_val = hw->phy.ops.set_page(hw, |
|
4232 HV_STATS_PAGE << IGP_PAGE_SHIFT); |
|
4233 if (ret_val) |
|
4234 goto release; |
|
4235 } |
|
4236 |
|
4237 /* Single Collision Count */ |
|
4238 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
|
4239 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); |
|
4240 if (!ret_val) |
|
4241 adapter->stats.scc += phy_data; |
|
4242 |
|
4243 /* Excessive Collision Count */ |
|
4244 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
|
4245 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); |
|
4246 if (!ret_val) |
|
4247 adapter->stats.ecol += phy_data; |
|
4248 |
|
4249 /* Multiple Collision Count */ |
|
4250 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
|
4251 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); |
|
4252 if (!ret_val) |
|
4253 adapter->stats.mcc += phy_data; |
|
4254 |
|
4255 /* Late Collision Count */ |
|
4256 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
|
4257 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); |
|
4258 if (!ret_val) |
|
4259 adapter->stats.latecol += phy_data; |
|
4260 |
|
4261 /* Collision Count - also used for adaptive IFS */ |
|
4262 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
|
4263 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); |
|
4264 if (!ret_val) |
|
4265 hw->mac.collision_delta = phy_data; |
|
4266 |
|
4267 /* Defer Count */ |
|
4268 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
|
4269 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); |
|
4270 if (!ret_val) |
|
4271 adapter->stats.dc += phy_data; |
|
4272 |
|
4273 /* Transmit with no CRS */ |
|
4274 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
|
4275 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); |
|
4276 if (!ret_val) |
|
4277 adapter->stats.tncrs += phy_data; |
|
4278 |
|
4279 release: |
|
4280 hw->phy.ops.release(hw); |
|
4281 } |
|
4282 |
|
4283 /** |
|
4284 * e1000e_update_stats - Update the board statistics counters |
|
4285 * @adapter: board private structure |
|
4286 **/ |
|
4287 static void e1000e_update_stats(struct e1000_adapter *adapter) |
|
4288 { |
|
4289 struct net_device *netdev = adapter->netdev; |
|
4290 struct e1000_hw *hw = &adapter->hw; |
|
4291 struct pci_dev *pdev = adapter->pdev; |
|
4292 |
|
4293 /* |
|
4294 * Prevent stats update while adapter is being reset, or if the pci |
|
4295 * connection is down. |
|
4296 */ |
|
4297 if (adapter->link_speed == 0) |
|
4298 return; |
|
4299 if (pci_channel_offline(pdev)) |
|
4300 return; |
|
4301 |
|
4302 adapter->stats.crcerrs += er32(CRCERRS); |
|
4303 adapter->stats.gprc += er32(GPRC); |
|
4304 adapter->stats.gorc += er32(GORCL); |
|
4305 er32(GORCH); /* Clear gorc */ |
|
4306 adapter->stats.bprc += er32(BPRC); |
|
4307 adapter->stats.mprc += er32(MPRC); |
|
4308 adapter->stats.roc += er32(ROC); |
|
4309 |
|
4310 adapter->stats.mpc += er32(MPC); |
|
4311 |
|
4312 /* Half-duplex statistics */ |
|
4313 if (adapter->link_duplex == HALF_DUPLEX) { |
|
4314 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { |
|
4315 e1000e_update_phy_stats(adapter); |
|
4316 } else { |
|
4317 adapter->stats.scc += er32(SCC); |
|
4318 adapter->stats.ecol += er32(ECOL); |
|
4319 adapter->stats.mcc += er32(MCC); |
|
4320 adapter->stats.latecol += er32(LATECOL); |
|
4321 adapter->stats.dc += er32(DC); |
|
4322 |
|
4323 hw->mac.collision_delta = er32(COLC); |
|
4324 |
|
4325 if ((hw->mac.type != e1000_82574) && |
|
4326 (hw->mac.type != e1000_82583)) |
|
4327 adapter->stats.tncrs += er32(TNCRS); |
|
4328 } |
|
4329 adapter->stats.colc += hw->mac.collision_delta; |
|
4330 } |
|
4331 |
|
4332 adapter->stats.xonrxc += er32(XONRXC); |
|
4333 adapter->stats.xontxc += er32(XONTXC); |
|
4334 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
4335 adapter->stats.xofftxc += er32(XOFFTXC); |
|
4336 adapter->stats.gptc += er32(GPTC); |
|
4337 adapter->stats.gotc += er32(GOTCL); |
|
4338 er32(GOTCH); /* Clear gotc */ |
|
4339 adapter->stats.rnbc += er32(RNBC); |
|
4340 adapter->stats.ruc += er32(RUC); |
|
4341 |
|
4342 adapter->stats.mptc += er32(MPTC); |
|
4343 adapter->stats.bptc += er32(BPTC); |
|
4344 |
|
4345 /* used for adaptive IFS */ |
|
4346 |
|
4347 hw->mac.tx_packet_delta = er32(TPT); |
|
4348 adapter->stats.tpt += hw->mac.tx_packet_delta; |
|
4349 |
|
4350 adapter->stats.algnerrc += er32(ALGNERRC); |
|
4351 adapter->stats.rxerrc += er32(RXERRC); |
|
4352 adapter->stats.cexterr += er32(CEXTERR); |
|
4353 adapter->stats.tsctc += er32(TSCTC); |
|
4354 adapter->stats.tsctfc += er32(TSCTFC); |
|
4355 |
|
4356 /* Fill out the OS statistics structure */ |
|
4357 netdev->stats.multicast = adapter->stats.mprc; |
|
4358 netdev->stats.collisions = adapter->stats.colc; |
|
4359 |
|
4360 /* Rx Errors */ |
|
4361 |
|
4362 /* |
|
4363 * RLEC on some newer hardware can be incorrect so build |
|
4364 * our own version based on RUC and ROC |
|
4365 */ |
|
4366 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
4367 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
4368 adapter->stats.ruc + adapter->stats.roc + |
|
4369 adapter->stats.cexterr; |
|
4370 netdev->stats.rx_length_errors = adapter->stats.ruc + |
|
4371 adapter->stats.roc; |
|
4372 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
4373 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
4374 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
4375 |
|
4376 /* Tx Errors */ |
|
4377 netdev->stats.tx_errors = adapter->stats.ecol + |
|
4378 adapter->stats.latecol; |
|
4379 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
4380 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
4381 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
4382 |
|
4383 /* Tx Dropped needs to be maintained elsewhere */ |
|
4384 |
|
4385 /* Management Stats */ |
|
4386 adapter->stats.mgptc += er32(MGTPTC); |
|
4387 adapter->stats.mgprc += er32(MGTPRC); |
|
4388 adapter->stats.mgpdc += er32(MGTPDC); |
|
4389 } |
|
4390 |
|
4391 /** |
|
4392 * e1000_phy_read_status - Update the PHY register status snapshot |
|
4393 * @adapter: board private structure |
|
4394 **/ |
|
4395 static void e1000_phy_read_status(struct e1000_adapter *adapter) |
|
4396 { |
|
4397 struct e1000_hw *hw = &adapter->hw; |
|
4398 struct e1000_phy_regs *phy = &adapter->phy_regs; |
|
4399 |
|
4400 if ((er32(STATUS) & E1000_STATUS_LU) && |
|
4401 (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
|
4402 int ret_val; |
|
4403 |
|
4404 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); |
|
4405 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); |
|
4406 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); |
|
4407 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); |
|
4408 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); |
|
4409 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); |
|
4410 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); |
|
4411 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); |
|
4412 if (ret_val) |
|
4413 e_warn("Error reading PHY register\n"); |
|
4414 } else { |
|
4415 /* |
|
4416 * Do not read PHY registers if link is not up |
|
4417 * Set values to typical power-on defaults |
|
4418 */ |
|
4419 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); |
|
4420 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | |
|
4421 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | |
|
4422 BMSR_ERCAP); |
|
4423 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | |
|
4424 ADVERTISE_ALL | ADVERTISE_CSMA); |
|
4425 phy->lpa = 0; |
|
4426 phy->expansion = EXPANSION_ENABLENPAGE; |
|
4427 phy->ctrl1000 = ADVERTISE_1000FULL; |
|
4428 phy->stat1000 = 0; |
|
4429 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); |
|
4430 } |
|
4431 } |
|
4432 |
|
4433 static void e1000_print_link_info(struct e1000_adapter *adapter) |
|
4434 { |
|
4435 struct e1000_hw *hw = &adapter->hw; |
|
4436 u32 ctrl = er32(CTRL); |
|
4437 |
|
4438 /* Link status message must follow this format for user tools */ |
|
4439 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", |
|
4440 adapter->netdev->name, |
|
4441 adapter->link_speed, |
|
4442 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half", |
|
4443 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" : |
|
4444 (ctrl & E1000_CTRL_RFCE) ? "Rx" : |
|
4445 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"); |
|
4446 } |
|
4447 |
|
4448 static bool e1000e_has_link(struct e1000_adapter *adapter) |
|
4449 { |
|
4450 struct e1000_hw *hw = &adapter->hw; |
|
4451 bool link_active = false; |
|
4452 s32 ret_val = 0; |
|
4453 |
|
4454 /* |
|
4455 * get_link_status is set on LSC (link status) interrupt or |
|
4456 * Rx sequence error interrupt. get_link_status will stay |
|
4457 * false until the check_for_link establishes link |
|
4458 * for copper adapters ONLY |
|
4459 */ |
|
4460 switch (hw->phy.media_type) { |
|
4461 case e1000_media_type_copper: |
|
4462 if (hw->mac.get_link_status) { |
|
4463 ret_val = hw->mac.ops.check_for_link(hw); |
|
4464 link_active = !hw->mac.get_link_status; |
|
4465 } else { |
|
4466 link_active = true; |
|
4467 } |
|
4468 break; |
|
4469 case e1000_media_type_fiber: |
|
4470 ret_val = hw->mac.ops.check_for_link(hw); |
|
4471 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
4472 break; |
|
4473 case e1000_media_type_internal_serdes: |
|
4474 ret_val = hw->mac.ops.check_for_link(hw); |
|
4475 link_active = adapter->hw.mac.serdes_has_link; |
|
4476 break; |
|
4477 default: |
|
4478 case e1000_media_type_unknown: |
|
4479 break; |
|
4480 } |
|
4481 |
|
4482 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && |
|
4483 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
4484 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ |
|
4485 e_info("Gigabit has been disabled, downgrading speed\n"); |
|
4486 } |
|
4487 |
|
4488 return link_active; |
|
4489 } |
|
4490 |
|
4491 static void e1000e_enable_receives(struct e1000_adapter *adapter) |
|
4492 { |
|
4493 /* make sure the receive unit is started */ |
|
4494 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4495 (adapter->flags & FLAG_RX_RESTART_NOW)) { |
|
4496 struct e1000_hw *hw = &adapter->hw; |
|
4497 u32 rctl = er32(RCTL); |
|
4498 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
4499 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
4500 } |
|
4501 } |
|
4502 |
|
4503 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
|
4504 { |
|
4505 struct e1000_hw *hw = &adapter->hw; |
|
4506 |
|
4507 /* |
|
4508 * With 82574 controllers, PHY needs to be checked periodically |
|
4509 * for hung state and reset, if two calls return true |
|
4510 */ |
|
4511 if (e1000_check_phy_82574(hw)) |
|
4512 adapter->phy_hang_count++; |
|
4513 else |
|
4514 adapter->phy_hang_count = 0; |
|
4515 |
|
4516 if (adapter->phy_hang_count > 1) { |
|
4517 adapter->phy_hang_count = 0; |
|
4518 schedule_work(&adapter->reset_task); |
|
4519 } |
|
4520 } |
|
4521 |
|
4522 /** |
|
4523 * e1000_watchdog - Timer Call-back |
|
4524 * @data: pointer to adapter cast into an unsigned long |
|
4525 **/ |
|
4526 static void e1000_watchdog(unsigned long data) |
|
4527 { |
|
4528 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4529 |
|
4530 /* Do the rest outside of interrupt context */ |
|
4531 schedule_work(&adapter->watchdog_task); |
|
4532 |
|
4533 /* TODO: make this use queue_delayed_work() */ |
|
4534 } |
|
4535 |
|
4536 static void e1000_watchdog_task(struct work_struct *work) |
|
4537 { |
|
4538 struct e1000_adapter *adapter = container_of(work, |
|
4539 struct e1000_adapter, watchdog_task); |
|
4540 struct net_device *netdev = adapter->netdev; |
|
4541 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
4542 struct e1000_phy_info *phy = &adapter->hw.phy; |
|
4543 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4544 struct e1000_hw *hw = &adapter->hw; |
|
4545 u32 link, tctl; |
|
4546 |
|
4547 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4548 return; |
|
4549 |
|
4550 link = e1000e_has_link(adapter); |
|
4551 if ((adapter->ecdev && (ecdev_get_link(adapter->ecdev)) && link) |
|
4552 || (!adapter->ecdev && (netif_carrier_ok(netdev)) && link)) { |
|
4553 if (!adapter->ecdev) { |
|
4554 /* Cancel scheduled suspend requests. */ |
|
4555 pm_runtime_resume(netdev->dev.parent); |
|
4556 } |
|
4557 |
|
4558 e1000e_enable_receives(adapter); |
|
4559 goto link_up; |
|
4560 } |
|
4561 |
|
4562 if ((e1000e_enable_tx_pkt_filtering(hw)) && |
|
4563 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) |
|
4564 e1000_update_mng_vlan(adapter); |
|
4565 |
|
4566 if (link) { |
|
4567 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
4568 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
4569 bool txb2b = true; |
|
4570 |
|
4571 /* Cancel scheduled suspend requests. */ |
|
4572 pm_runtime_resume(netdev->dev.parent); |
|
4573 |
|
4574 /* update snapshot of PHY registers on LSC */ |
|
4575 e1000_phy_read_status(adapter); |
|
4576 mac->ops.get_link_up_info(&adapter->hw, |
|
4577 &adapter->link_speed, |
|
4578 &adapter->link_duplex); |
|
4579 e1000_print_link_info(adapter); |
|
4580 /* |
|
4581 * On supported PHYs, check for duplex mismatch only |
|
4582 * if link has autonegotiated at 10/100 half |
|
4583 */ |
|
4584 if ((hw->phy.type == e1000_phy_igp_3 || |
|
4585 hw->phy.type == e1000_phy_bm) && |
|
4586 (hw->mac.autoneg == true) && |
|
4587 (adapter->link_speed == SPEED_10 || |
|
4588 adapter->link_speed == SPEED_100) && |
|
4589 (adapter->link_duplex == HALF_DUPLEX)) { |
|
4590 u16 autoneg_exp; |
|
4591 |
|
4592 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); |
|
4593 |
|
4594 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) |
|
4595 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n"); |
|
4596 } |
|
4597 |
|
4598 /* adjust timeout factor according to speed/duplex */ |
|
4599 adapter->tx_timeout_factor = 1; |
|
4600 switch (adapter->link_speed) { |
|
4601 case SPEED_10: |
|
4602 txb2b = false; |
|
4603 adapter->tx_timeout_factor = 16; |
|
4604 break; |
|
4605 case SPEED_100: |
|
4606 txb2b = false; |
|
4607 adapter->tx_timeout_factor = 10; |
|
4608 break; |
|
4609 } |
|
4610 |
|
4611 /* |
|
4612 * workaround: re-program speed mode bit after |
|
4613 * link-up event |
|
4614 */ |
|
4615 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
|
4616 !txb2b) { |
|
4617 u32 tarc0; |
|
4618 tarc0 = er32(TARC(0)); |
|
4619 tarc0 &= ~SPEED_MODE_BIT; |
|
4620 ew32(TARC(0), tarc0); |
|
4621 } |
|
4622 |
|
4623 /* |
|
4624 * disable TSO for pcie and 10/100 speeds, to avoid |
|
4625 * some hardware issues |
|
4626 */ |
|
4627 if (!(adapter->flags & FLAG_TSO_FORCE)) { |
|
4628 switch (adapter->link_speed) { |
|
4629 case SPEED_10: |
|
4630 case SPEED_100: |
|
4631 e_info("10/100 speed: disabling TSO\n"); |
|
4632 netdev->features &= ~NETIF_F_TSO; |
|
4633 netdev->features &= ~NETIF_F_TSO6; |
|
4634 break; |
|
4635 case SPEED_1000: |
|
4636 netdev->features |= NETIF_F_TSO; |
|
4637 netdev->features |= NETIF_F_TSO6; |
|
4638 break; |
|
4639 default: |
|
4640 /* oops */ |
|
4641 break; |
|
4642 } |
|
4643 } |
|
4644 |
|
4645 /* |
|
4646 * enable transmits in the hardware, need to do this |
|
4647 * after setting TARC(0) |
|
4648 */ |
|
4649 tctl = er32(TCTL); |
|
4650 tctl |= E1000_TCTL_EN; |
|
4651 ew32(TCTL, tctl); |
|
4652 |
|
4653 /* |
|
4654 * Perform any post-link-up configuration before |
|
4655 * reporting link up. |
|
4656 */ |
|
4657 if (phy->ops.cfg_on_link_up) |
|
4658 phy->ops.cfg_on_link_up(hw); |
|
4659 |
|
4660 if (adapter->ecdev) |
|
4661 ecdev_set_link(adapter->ecdev, 1); |
|
4662 else |
|
4663 netif_carrier_on(netdev); |
|
4664 |
|
4665 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4666 mod_timer(&adapter->phy_info_timer, |
|
4667 round_jiffies(jiffies + 2 * HZ)); |
|
4668 } |
|
4669 } else { |
|
4670 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
4671 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
4672 adapter->link_speed = 0; |
|
4673 adapter->link_duplex = 0; |
|
4674 /* Link status message must follow this format */ |
|
4675 printk(KERN_INFO "e1000e: %s NIC Link is Down\n", |
|
4676 adapter->netdev->name); |
|
4677 if (adapter->ecdev) { |
|
4678 ecdev_set_link(adapter->ecdev, 0); |
|
4679 } |
|
4680 else { |
|
4681 netif_carrier_off(netdev); |
|
4682 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
4683 mod_timer(&adapter->phy_info_timer, |
|
4684 round_jiffies(jiffies + 2 * HZ)); |
|
4685 } |
|
4686 |
|
4687 if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
|
4688 schedule_work(&adapter->reset_task); |
|
4689 else |
|
4690 pm_schedule_suspend(netdev->dev.parent, |
|
4691 LINK_TIMEOUT); |
|
4692 } |
|
4693 } |
|
4694 |
|
4695 link_up: |
|
4696 spin_lock(&adapter->stats64_lock); |
|
4697 e1000e_update_stats(adapter); |
|
4698 |
|
4699 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
4700 adapter->tpt_old = adapter->stats.tpt; |
|
4701 mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
4702 adapter->colc_old = adapter->stats.colc; |
|
4703 |
|
4704 adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
|
4705 adapter->gorc_old = adapter->stats.gorc; |
|
4706 adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
|
4707 adapter->gotc_old = adapter->stats.gotc; |
|
4708 spin_unlock(&adapter->stats64_lock); |
|
4709 |
|
4710 e1000e_update_adaptive(&adapter->hw); |
|
4711 |
|
4712 if (!adapter->ecdev && !netif_carrier_ok(netdev) && |
|
4713 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) { |
|
4714 /* |
|
4715 * We've lost link, so the controller stops DMA, |
|
4716 * but we've got queued Tx work that's never going |
|
4717 * to get done, so reset controller to flush Tx. |
|
4718 * (Do the reset outside of interrupt context). |
|
4719 */ |
|
4720 schedule_work(&adapter->reset_task); |
|
4721 /* return immediately since reset is imminent */ |
|
4722 return; |
|
4723 } |
|
4724 |
|
4725 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
4726 if (adapter->itr_setting == 4) { |
|
4727 /* |
|
4728 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
4729 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
4730 * everyone else is between 2000-8000. |
|
4731 */ |
|
4732 u32 goc = (adapter->gotc + adapter->gorc) / 10000; |
|
4733 u32 dif = (adapter->gotc > adapter->gorc ? |
|
4734 adapter->gotc - adapter->gorc : |
|
4735 adapter->gorc - adapter->gotc) / 10000; |
|
4736 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
4737 |
|
4738 e1000e_write_itr(adapter, itr); |
|
4739 } |
|
4740 |
|
4741 /* Cause software interrupt to ensure Rx ring is cleaned */ |
|
4742 if (adapter->msix_entries) |
|
4743 ew32(ICS, adapter->rx_ring->ims_val); |
|
4744 else |
|
4745 ew32(ICS, E1000_ICS_RXDMT0); |
|
4746 |
|
4747 /* flush pending descriptors to memory before detecting Tx hang */ |
|
4748 e1000e_flush_descriptors(adapter); |
|
4749 |
|
4750 /* Force detection of hung controller every watchdog period */ |
|
4751 adapter->detect_tx_hung = true; |
|
4752 |
|
4753 /* |
|
4754 * With 82571 controllers, LAA may be overwritten due to controller |
|
4755 * reset from the other port. Set the appropriate LAA in RAR[0] |
|
4756 */ |
|
4757 if (e1000e_get_laa_state_82571(hw)) |
|
4758 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0); |
|
4759 |
|
4760 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
|
4761 e1000e_check_82574_phy_workaround(adapter); |
|
4762 |
|
4763 /* Reset the timer */ |
|
4764 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
4765 mod_timer(&adapter->watchdog_timer, |
|
4766 round_jiffies(jiffies + 2 * HZ)); |
|
4767 } |
|
4768 |
|
4769 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
4770 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
4771 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
4772 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
4773 #define E1000_TX_FLAGS_NO_FCS 0x00000010 |
|
4774 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
4775 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
4776 |
|
4777 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
4778 { |
|
4779 struct e1000_context_desc *context_desc; |
|
4780 struct e1000_buffer *buffer_info; |
|
4781 unsigned int i; |
|
4782 u32 cmd_length = 0; |
|
4783 u16 ipcse = 0, tucse, mss; |
|
4784 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
4785 |
|
4786 if (!skb_is_gso(skb)) |
|
4787 return 0; |
|
4788 |
|
4789 if (skb_header_cloned(skb)) { |
|
4790 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
4791 |
|
4792 if (err) |
|
4793 return err; |
|
4794 } |
|
4795 |
|
4796 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
4797 mss = skb_shinfo(skb)->gso_size; |
|
4798 if (skb->protocol == htons(ETH_P_IP)) { |
|
4799 struct iphdr *iph = ip_hdr(skb); |
|
4800 iph->tot_len = 0; |
|
4801 iph->check = 0; |
|
4802 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, |
|
4803 0, IPPROTO_TCP, 0); |
|
4804 cmd_length = E1000_TXD_CMD_IP; |
|
4805 ipcse = skb_transport_offset(skb) - 1; |
|
4806 } else if (skb_is_gso_v6(skb)) { |
|
4807 ipv6_hdr(skb)->payload_len = 0; |
|
4808 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
4809 &ipv6_hdr(skb)->daddr, |
|
4810 0, IPPROTO_TCP, 0); |
|
4811 ipcse = 0; |
|
4812 } |
|
4813 ipcss = skb_network_offset(skb); |
|
4814 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
4815 tucss = skb_transport_offset(skb); |
|
4816 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
4817 tucse = 0; |
|
4818 |
|
4819 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
4820 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
4821 |
|
4822 i = tx_ring->next_to_use; |
|
4823 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4824 buffer_info = &tx_ring->buffer_info[i]; |
|
4825 |
|
4826 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
4827 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
4828 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
4829 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
4830 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
4831 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
4832 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
4833 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
4834 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
4835 |
|
4836 buffer_info->time_stamp = jiffies; |
|
4837 buffer_info->next_to_watch = i; |
|
4838 |
|
4839 i++; |
|
4840 if (i == tx_ring->count) |
|
4841 i = 0; |
|
4842 tx_ring->next_to_use = i; |
|
4843 |
|
4844 return 1; |
|
4845 } |
|
4846 |
|
4847 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
4848 { |
|
4849 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4850 struct e1000_context_desc *context_desc; |
|
4851 struct e1000_buffer *buffer_info; |
|
4852 unsigned int i; |
|
4853 u8 css; |
|
4854 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
4855 __be16 protocol; |
|
4856 |
|
4857 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
4858 return 0; |
|
4859 |
|
4860 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
|
4861 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; |
|
4862 else |
|
4863 protocol = skb->protocol; |
|
4864 |
|
4865 switch (protocol) { |
|
4866 case cpu_to_be16(ETH_P_IP): |
|
4867 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
4868 cmd_len |= E1000_TXD_CMD_TCP; |
|
4869 break; |
|
4870 case cpu_to_be16(ETH_P_IPV6): |
|
4871 /* XXX not handling all IPV6 headers */ |
|
4872 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
4873 cmd_len |= E1000_TXD_CMD_TCP; |
|
4874 break; |
|
4875 default: |
|
4876 if (unlikely(net_ratelimit())) |
|
4877 e_warn("checksum_partial proto=%x!\n", |
|
4878 be16_to_cpu(protocol)); |
|
4879 break; |
|
4880 } |
|
4881 |
|
4882 css = skb_checksum_start_offset(skb); |
|
4883 |
|
4884 i = tx_ring->next_to_use; |
|
4885 buffer_info = &tx_ring->buffer_info[i]; |
|
4886 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4887 |
|
4888 context_desc->lower_setup.ip_config = 0; |
|
4889 context_desc->upper_setup.tcp_fields.tucss = css; |
|
4890 context_desc->upper_setup.tcp_fields.tucso = |
|
4891 css + skb->csum_offset; |
|
4892 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
4893 context_desc->tcp_seg_setup.data = 0; |
|
4894 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
4895 |
|
4896 buffer_info->time_stamp = jiffies; |
|
4897 buffer_info->next_to_watch = i; |
|
4898 |
|
4899 i++; |
|
4900 if (i == tx_ring->count) |
|
4901 i = 0; |
|
4902 tx_ring->next_to_use = i; |
|
4903 |
|
4904 return 1; |
|
4905 } |
|
4906 |
|
4907 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb, |
|
4908 unsigned int first, unsigned int max_per_txd, |
|
4909 unsigned int nr_frags) |
|
4910 { |
|
4911 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4912 struct pci_dev *pdev = adapter->pdev; |
|
4913 struct e1000_buffer *buffer_info; |
|
4914 unsigned int len = skb_headlen(skb); |
|
4915 unsigned int offset = 0, size, count = 0, i; |
|
4916 unsigned int f, bytecount, segs; |
|
4917 |
|
4918 i = tx_ring->next_to_use; |
|
4919 |
|
4920 while (len) { |
|
4921 buffer_info = &tx_ring->buffer_info[i]; |
|
4922 size = min(len, max_per_txd); |
|
4923 |
|
4924 buffer_info->length = size; |
|
4925 buffer_info->time_stamp = jiffies; |
|
4926 buffer_info->next_to_watch = i; |
|
4927 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4928 skb->data + offset, |
|
4929 size, DMA_TO_DEVICE); |
|
4930 buffer_info->mapped_as_page = false; |
|
4931 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4932 goto dma_error; |
|
4933 |
|
4934 len -= size; |
|
4935 offset += size; |
|
4936 count++; |
|
4937 |
|
4938 if (len) { |
|
4939 i++; |
|
4940 if (i == tx_ring->count) |
|
4941 i = 0; |
|
4942 } |
|
4943 } |
|
4944 |
|
4945 for (f = 0; f < nr_frags; f++) { |
|
4946 const struct skb_frag_struct *frag; |
|
4947 |
|
4948 frag = &skb_shinfo(skb)->frags[f]; |
|
4949 len = skb_frag_size(frag); |
|
4950 offset = 0; |
|
4951 |
|
4952 while (len) { |
|
4953 i++; |
|
4954 if (i == tx_ring->count) |
|
4955 i = 0; |
|
4956 |
|
4957 buffer_info = &tx_ring->buffer_info[i]; |
|
4958 size = min(len, max_per_txd); |
|
4959 |
|
4960 buffer_info->length = size; |
|
4961 buffer_info->time_stamp = jiffies; |
|
4962 buffer_info->next_to_watch = i; |
|
4963 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
|
4964 offset, size, DMA_TO_DEVICE); |
|
4965 buffer_info->mapped_as_page = true; |
|
4966 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4967 goto dma_error; |
|
4968 |
|
4969 len -= size; |
|
4970 offset += size; |
|
4971 count++; |
|
4972 } |
|
4973 } |
|
4974 |
|
4975 segs = skb_shinfo(skb)->gso_segs ? : 1; |
|
4976 /* multiply data chunks by size of headers */ |
|
4977 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; |
|
4978 |
|
4979 tx_ring->buffer_info[i].skb = skb; |
|
4980 tx_ring->buffer_info[i].segs = segs; |
|
4981 tx_ring->buffer_info[i].bytecount = bytecount; |
|
4982 tx_ring->buffer_info[first].next_to_watch = i; |
|
4983 |
|
4984 return count; |
|
4985 |
|
4986 dma_error: |
|
4987 dev_err(&pdev->dev, "Tx DMA map failed\n"); |
|
4988 buffer_info->dma = 0; |
|
4989 if (count) |
|
4990 count--; |
|
4991 |
|
4992 while (count--) { |
|
4993 if (i == 0) |
|
4994 i += tx_ring->count; |
|
4995 i--; |
|
4996 buffer_info = &tx_ring->buffer_info[i]; |
|
4997 e1000_put_txbuf(tx_ring, buffer_info); |
|
4998 } |
|
4999 |
|
5000 return 0; |
|
5001 } |
|
5002 |
|
5003 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count) |
|
5004 { |
|
5005 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5006 struct e1000_tx_desc *tx_desc = NULL; |
|
5007 struct e1000_buffer *buffer_info; |
|
5008 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
5009 unsigned int i; |
|
5010 |
|
5011 if (tx_flags & E1000_TX_FLAGS_TSO) { |
|
5012 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
5013 E1000_TXD_CMD_TSE; |
|
5014 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
5015 |
|
5016 if (tx_flags & E1000_TX_FLAGS_IPV4) |
|
5017 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
5018 } |
|
5019 |
|
5020 if (tx_flags & E1000_TX_FLAGS_CSUM) { |
|
5021 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
5022 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
5023 } |
|
5024 |
|
5025 if (tx_flags & E1000_TX_FLAGS_VLAN) { |
|
5026 txd_lower |= E1000_TXD_CMD_VLE; |
|
5027 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
5028 } |
|
5029 |
|
5030 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
5031 txd_lower &= ~(E1000_TXD_CMD_IFCS); |
|
5032 |
|
5033 i = tx_ring->next_to_use; |
|
5034 |
|
5035 do { |
|
5036 buffer_info = &tx_ring->buffer_info[i]; |
|
5037 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
5038 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
5039 tx_desc->lower.data = |
|
5040 cpu_to_le32(txd_lower | buffer_info->length); |
|
5041 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
5042 |
|
5043 i++; |
|
5044 if (i == tx_ring->count) |
|
5045 i = 0; |
|
5046 } while (--count > 0); |
|
5047 |
|
5048 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
5049 |
|
5050 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ |
|
5051 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
5052 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); |
|
5053 |
|
5054 /* |
|
5055 * Force memory writes to complete before letting h/w |
|
5056 * know there are new descriptors to fetch. (Only |
|
5057 * applicable for weak-ordered memory model archs, |
|
5058 * such as IA-64). |
|
5059 */ |
|
5060 wmb(); |
|
5061 |
|
5062 tx_ring->next_to_use = i; |
|
5063 |
|
5064 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
5065 e1000e_update_tdt_wa(tx_ring, i); |
|
5066 else |
|
5067 writel(i, tx_ring->tail); |
|
5068 |
|
5069 /* |
|
5070 * we need this if more than one processor can write to our tail |
|
5071 * at a time, it synchronizes IO on IA64/Altix systems |
|
5072 */ |
|
5073 mmiowb(); |
|
5074 } |
|
5075 |
|
5076 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
5077 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
5078 struct sk_buff *skb) |
|
5079 { |
|
5080 struct e1000_hw *hw = &adapter->hw; |
|
5081 u16 length, offset; |
|
5082 |
|
5083 if (vlan_tx_tag_present(skb)) { |
|
5084 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
5085 (adapter->hw.mng_cookie.status & |
|
5086 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
|
5087 return 0; |
|
5088 } |
|
5089 |
|
5090 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) |
|
5091 return 0; |
|
5092 |
|
5093 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) |
|
5094 return 0; |
|
5095 |
|
5096 { |
|
5097 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); |
|
5098 struct udphdr *udp; |
|
5099 |
|
5100 if (ip->protocol != IPPROTO_UDP) |
|
5101 return 0; |
|
5102 |
|
5103 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
|
5104 if (ntohs(udp->dest) != 67) |
|
5105 return 0; |
|
5106 |
|
5107 offset = (u8 *)udp + 8 - skb->data; |
|
5108 length = skb->len - offset; |
|
5109 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); |
|
5110 } |
|
5111 |
|
5112 return 0; |
|
5113 } |
|
5114 |
|
5115 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5116 { |
|
5117 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5118 |
|
5119 netif_stop_queue(adapter->netdev); |
|
5120 /* |
|
5121 * Herbert's original patch had: |
|
5122 * smp_mb__after_netif_stop_queue(); |
|
5123 * but since that doesn't exist yet, just open code it. |
|
5124 */ |
|
5125 smp_mb(); |
|
5126 |
|
5127 /* |
|
5128 * We need to check again in a case another CPU has just |
|
5129 * made room available. |
|
5130 */ |
|
5131 if (e1000_desc_unused(tx_ring) < size) |
|
5132 return -EBUSY; |
|
5133 |
|
5134 /* A reprieve! */ |
|
5135 netif_start_queue(adapter->netdev); |
|
5136 ++adapter->restart_queue; |
|
5137 return 0; |
|
5138 } |
|
5139 |
|
5140 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5141 { |
|
5142 BUG_ON(size > tx_ring->count); |
|
5143 |
|
5144 if (e1000_desc_unused(tx_ring) >= size) |
|
5145 return 0; |
|
5146 return __e1000_maybe_stop_tx(tx_ring, size); |
|
5147 } |
|
5148 |
|
5149 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
5150 struct net_device *netdev) |
|
5151 { |
|
5152 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5153 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
5154 unsigned int first; |
|
5155 unsigned int tx_flags = 0; |
|
5156 unsigned int len = skb_headlen(skb); |
|
5157 unsigned int nr_frags; |
|
5158 unsigned int mss; |
|
5159 int count = 0; |
|
5160 int tso; |
|
5161 unsigned int f; |
|
5162 |
|
5163 if (test_bit(__E1000_DOWN, &adapter->state)) { |
|
5164 if (!adapter->ecdev) |
|
5165 dev_kfree_skb_any(skb); |
|
5166 return NETDEV_TX_OK; |
|
5167 } |
|
5168 |
|
5169 if (skb->len <= 0) { |
|
5170 if (!adapter->ecdev) |
|
5171 dev_kfree_skb_any(skb); |
|
5172 return NETDEV_TX_OK; |
|
5173 } |
|
5174 |
|
5175 mss = skb_shinfo(skb)->gso_size; |
|
5176 if (mss) { |
|
5177 u8 hdr_len; |
|
5178 |
|
5179 /* |
|
5180 * TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
5181 * points to just header, pull a few bytes of payload from |
|
5182 * frags into skb->data |
|
5183 */ |
|
5184 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
5185 /* |
|
5186 * we do this workaround for ES2LAN, but it is un-necessary, |
|
5187 * avoiding it could save a lot of cycles |
|
5188 */ |
|
5189 if (skb->data_len && (hdr_len == len)) { |
|
5190 unsigned int pull_size; |
|
5191 |
|
5192 pull_size = min_t(unsigned int, 4, skb->data_len); |
|
5193 if (!__pskb_pull_tail(skb, pull_size)) { |
|
5194 e_err("__pskb_pull_tail failed.\n"); |
|
5195 if (!adapter->ecdev) |
|
5196 dev_kfree_skb_any(skb); |
|
5197 return NETDEV_TX_OK; |
|
5198 } |
|
5199 len = skb_headlen(skb); |
|
5200 } |
|
5201 } |
|
5202 |
|
5203 /* reserve a descriptor for the offload context */ |
|
5204 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
5205 count++; |
|
5206 count++; |
|
5207 |
|
5208 count += DIV_ROUND_UP(len, adapter->tx_fifo_limit); |
|
5209 |
|
5210 nr_frags = skb_shinfo(skb)->nr_frags; |
|
5211 for (f = 0; f < nr_frags; f++) |
|
5212 count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
|
5213 adapter->tx_fifo_limit); |
|
5214 |
|
5215 if (adapter->hw.mac.tx_pkt_filtering) |
|
5216 e1000_transfer_dhcp_info(adapter, skb); |
|
5217 |
|
5218 /* |
|
5219 * need: count + 2 desc gap to keep tail from touching |
|
5220 * head, otherwise try next time |
|
5221 */ |
|
5222 if (!adapter->ecdev && e1000_maybe_stop_tx(tx_ring, count + 2)) |
|
5223 return NETDEV_TX_BUSY; |
|
5224 |
|
5225 if (vlan_tx_tag_present(skb)) { |
|
5226 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
5227 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
5228 } |
|
5229 |
|
5230 first = tx_ring->next_to_use; |
|
5231 |
|
5232 tso = e1000_tso(tx_ring, skb); |
|
5233 if (tso < 0) { |
|
5234 if (!adapter->ecdev) |
|
5235 dev_kfree_skb_any(skb); |
|
5236 return NETDEV_TX_OK; |
|
5237 } |
|
5238 |
|
5239 if (tso) |
|
5240 tx_flags |= E1000_TX_FLAGS_TSO; |
|
5241 else if (e1000_tx_csum(tx_ring, skb)) |
|
5242 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
5243 |
|
5244 /* |
|
5245 * Old method was to assume IPv4 packet by default if TSO was enabled. |
|
5246 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
5247 * no longer assume, we must. |
|
5248 */ |
|
5249 if (skb->protocol == htons(ETH_P_IP)) |
|
5250 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
5251 |
|
5252 if (unlikely(skb->no_fcs)) |
|
5253 tx_flags |= E1000_TX_FLAGS_NO_FCS; |
|
5254 |
|
5255 /* if count is 0 then mapping error has occurred */ |
|
5256 count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit, |
|
5257 nr_frags); |
|
5258 if (count) { |
|
5259 skb_tx_timestamp(skb); |
|
5260 |
|
5261 netdev_sent_queue(netdev, skb->len); |
|
5262 e1000_tx_queue(tx_ring, tx_flags, count); |
|
5263 /* Make sure there is space in the ring for the next send. */ |
|
5264 if (!adapter->ecdev) { |
|
5265 e1000_maybe_stop_tx(tx_ring, |
|
5266 (MAX_SKB_FRAGS * |
|
5267 DIV_ROUND_UP(PAGE_SIZE, |
|
5268 adapter->tx_fifo_limit) + 2)); |
|
5269 } |
|
5270 } else { |
|
5271 if (!adapter->ecdev) { |
|
5272 dev_kfree_skb_any(skb); |
|
5273 } |
|
5274 tx_ring->buffer_info[first].time_stamp = 0; |
|
5275 tx_ring->next_to_use = first; |
|
5276 } |
|
5277 |
|
5278 return NETDEV_TX_OK; |
|
5279 } |
|
5280 |
|
5281 /** |
|
5282 * e1000_tx_timeout - Respond to a Tx Hang |
|
5283 * @netdev: network interface device structure |
|
5284 **/ |
|
5285 static void e1000_tx_timeout(struct net_device *netdev) |
|
5286 { |
|
5287 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5288 |
|
5289 /* Do the reset outside of interrupt context */ |
|
5290 adapter->tx_timeout_count++; |
|
5291 schedule_work(&adapter->reset_task); |
|
5292 } |
|
5293 |
|
5294 static void e1000_reset_task(struct work_struct *work) |
|
5295 { |
|
5296 struct e1000_adapter *adapter; |
|
5297 adapter = container_of(work, struct e1000_adapter, reset_task); |
|
5298 |
|
5299 /* don't run the task if already down */ |
|
5300 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
5301 return; |
|
5302 |
|
5303 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
5304 (adapter->flags & FLAG_RX_RESTART_NOW))) { |
|
5305 e1000e_dump(adapter); |
|
5306 e_err("Reset adapter\n"); |
|
5307 } |
|
5308 e1000e_reinit_locked(adapter); |
|
5309 } |
|
5310 |
|
5311 /** |
|
5312 * e1000_get_stats64 - Get System Network Statistics |
|
5313 * @netdev: network interface device structure |
|
5314 * @stats: rtnl_link_stats64 pointer |
|
5315 * |
|
5316 * Returns the address of the device statistics structure. |
|
5317 **/ |
|
5318 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
|
5319 struct rtnl_link_stats64 *stats) |
|
5320 { |
|
5321 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5322 |
|
5323 memset(stats, 0, sizeof(struct rtnl_link_stats64)); |
|
5324 spin_lock(&adapter->stats64_lock); |
|
5325 e1000e_update_stats(adapter); |
|
5326 /* Fill out the OS statistics structure */ |
|
5327 stats->rx_bytes = adapter->stats.gorc; |
|
5328 stats->rx_packets = adapter->stats.gprc; |
|
5329 stats->tx_bytes = adapter->stats.gotc; |
|
5330 stats->tx_packets = adapter->stats.gptc; |
|
5331 stats->multicast = adapter->stats.mprc; |
|
5332 stats->collisions = adapter->stats.colc; |
|
5333 |
|
5334 /* Rx Errors */ |
|
5335 |
|
5336 /* |
|
5337 * RLEC on some newer hardware can be incorrect so build |
|
5338 * our own version based on RUC and ROC |
|
5339 */ |
|
5340 stats->rx_errors = adapter->stats.rxerrc + |
|
5341 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
5342 adapter->stats.ruc + adapter->stats.roc + |
|
5343 adapter->stats.cexterr; |
|
5344 stats->rx_length_errors = adapter->stats.ruc + |
|
5345 adapter->stats.roc; |
|
5346 stats->rx_crc_errors = adapter->stats.crcerrs; |
|
5347 stats->rx_frame_errors = adapter->stats.algnerrc; |
|
5348 stats->rx_missed_errors = adapter->stats.mpc; |
|
5349 |
|
5350 /* Tx Errors */ |
|
5351 stats->tx_errors = adapter->stats.ecol + |
|
5352 adapter->stats.latecol; |
|
5353 stats->tx_aborted_errors = adapter->stats.ecol; |
|
5354 stats->tx_window_errors = adapter->stats.latecol; |
|
5355 stats->tx_carrier_errors = adapter->stats.tncrs; |
|
5356 |
|
5357 /* Tx Dropped needs to be maintained elsewhere */ |
|
5358 |
|
5359 spin_unlock(&adapter->stats64_lock); |
|
5360 return stats; |
|
5361 } |
|
5362 |
|
5363 /** |
|
5364 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
5365 * @netdev: network interface device structure |
|
5366 * @new_mtu: new value for maximum frame size |
|
5367 * |
|
5368 * Returns 0 on success, negative on failure |
|
5369 **/ |
|
5370 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
5371 { |
|
5372 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5373 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
|
5374 |
|
5375 if (adapter->ecdev) |
|
5376 return -EBUSY; |
|
5377 |
|
5378 /* Jumbo frame support */ |
|
5379 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
|
5380 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { |
|
5381 e_err("Jumbo Frames not supported.\n"); |
|
5382 return -EINVAL; |
|
5383 } |
|
5384 |
|
5385 /* Supported frame sizes */ |
|
5386 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
|
5387 (max_frame > adapter->max_hw_frame_size)) { |
|
5388 e_err("Unsupported MTU setting\n"); |
|
5389 return -EINVAL; |
|
5390 } |
|
5391 |
|
5392 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */ |
|
5393 if ((adapter->hw.mac.type >= e1000_pch2lan) && |
|
5394 !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
|
5395 (new_mtu > ETH_DATA_LEN)) { |
|
5396 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n"); |
|
5397 return -EINVAL; |
|
5398 } |
|
5399 |
|
5400 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
5401 usleep_range(1000, 2000); |
|
5402 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
|
5403 adapter->max_frame_size = max_frame; |
|
5404 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
|
5405 netdev->mtu = new_mtu; |
|
5406 if (netif_running(netdev)) |
|
5407 e1000e_down(adapter); |
|
5408 |
|
5409 /* |
|
5410 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
5411 * means we reserve 2 more, this pushes us to allocate from the next |
|
5412 * larger slab size. |
|
5413 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
5414 * However with the new *_jumbo_rx* routines, jumbo receives will use |
|
5415 * fragmented skbs |
|
5416 */ |
|
5417 |
|
5418 if (max_frame <= 2048) |
|
5419 adapter->rx_buffer_len = 2048; |
|
5420 else |
|
5421 adapter->rx_buffer_len = 4096; |
|
5422 |
|
5423 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
5424 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
|
5425 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
|
5426 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
|
5427 + ETH_FCS_LEN; |
|
5428 |
|
5429 if (netif_running(netdev)) |
|
5430 e1000e_up(adapter); |
|
5431 else |
|
5432 e1000e_reset(adapter); |
|
5433 |
|
5434 clear_bit(__E1000_RESETTING, &adapter->state); |
|
5435 |
|
5436 return 0; |
|
5437 } |
|
5438 |
|
5439 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
5440 int cmd) |
|
5441 { |
|
5442 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5443 struct mii_ioctl_data *data = if_mii(ifr); |
|
5444 |
|
5445 if (adapter->hw.phy.media_type != e1000_media_type_copper) |
|
5446 return -EOPNOTSUPP; |
|
5447 |
|
5448 switch (cmd) { |
|
5449 case SIOCGMIIPHY: |
|
5450 data->phy_id = adapter->hw.phy.addr; |
|
5451 break; |
|
5452 case SIOCGMIIREG: |
|
5453 e1000_phy_read_status(adapter); |
|
5454 |
|
5455 switch (data->reg_num & 0x1F) { |
|
5456 case MII_BMCR: |
|
5457 data->val_out = adapter->phy_regs.bmcr; |
|
5458 break; |
|
5459 case MII_BMSR: |
|
5460 data->val_out = adapter->phy_regs.bmsr; |
|
5461 break; |
|
5462 case MII_PHYSID1: |
|
5463 data->val_out = (adapter->hw.phy.id >> 16); |
|
5464 break; |
|
5465 case MII_PHYSID2: |
|
5466 data->val_out = (adapter->hw.phy.id & 0xFFFF); |
|
5467 break; |
|
5468 case MII_ADVERTISE: |
|
5469 data->val_out = adapter->phy_regs.advertise; |
|
5470 break; |
|
5471 case MII_LPA: |
|
5472 data->val_out = adapter->phy_regs.lpa; |
|
5473 break; |
|
5474 case MII_EXPANSION: |
|
5475 data->val_out = adapter->phy_regs.expansion; |
|
5476 break; |
|
5477 case MII_CTRL1000: |
|
5478 data->val_out = adapter->phy_regs.ctrl1000; |
|
5479 break; |
|
5480 case MII_STAT1000: |
|
5481 data->val_out = adapter->phy_regs.stat1000; |
|
5482 break; |
|
5483 case MII_ESTATUS: |
|
5484 data->val_out = adapter->phy_regs.estatus; |
|
5485 break; |
|
5486 default: |
|
5487 return -EIO; |
|
5488 } |
|
5489 break; |
|
5490 case SIOCSMIIREG: |
|
5491 default: |
|
5492 return -EOPNOTSUPP; |
|
5493 } |
|
5494 return 0; |
|
5495 } |
|
5496 |
|
5497 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
5498 { |
|
5499 switch (cmd) { |
|
5500 case SIOCGMIIPHY: |
|
5501 case SIOCGMIIREG: |
|
5502 case SIOCSMIIREG: |
|
5503 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
5504 default: |
|
5505 return -EOPNOTSUPP; |
|
5506 } |
|
5507 } |
|
5508 |
|
5509 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
|
5510 { |
|
5511 struct e1000_hw *hw = &adapter->hw; |
|
5512 u32 i, mac_reg; |
|
5513 u16 phy_reg, wuc_enable; |
|
5514 int retval = 0; |
|
5515 |
|
5516 /* copy MAC RARs to PHY RARs */ |
|
5517 e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
|
5518 |
|
5519 retval = hw->phy.ops.acquire(hw); |
|
5520 if (retval) { |
|
5521 e_err("Could not acquire PHY\n"); |
|
5522 return retval; |
|
5523 } |
|
5524 |
|
5525 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ |
|
5526 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5527 if (retval) |
|
5528 goto release; |
|
5529 |
|
5530 /* copy MAC MTA to PHY MTA - only needed for pchlan */ |
|
5531 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
|
5532 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); |
|
5533 hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
|
5534 (u16)(mac_reg & 0xFFFF)); |
|
5535 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, |
|
5536 (u16)((mac_reg >> 16) & 0xFFFF)); |
|
5537 } |
|
5538 |
|
5539 /* configure PHY Rx Control register */ |
|
5540 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
|
5541 mac_reg = er32(RCTL); |
|
5542 if (mac_reg & E1000_RCTL_UPE) |
|
5543 phy_reg |= BM_RCTL_UPE; |
|
5544 if (mac_reg & E1000_RCTL_MPE) |
|
5545 phy_reg |= BM_RCTL_MPE; |
|
5546 phy_reg &= ~(BM_RCTL_MO_MASK); |
|
5547 if (mac_reg & E1000_RCTL_MO_3) |
|
5548 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) |
|
5549 << BM_RCTL_MO_SHIFT); |
|
5550 if (mac_reg & E1000_RCTL_BAM) |
|
5551 phy_reg |= BM_RCTL_BAM; |
|
5552 if (mac_reg & E1000_RCTL_PMCF) |
|
5553 phy_reg |= BM_RCTL_PMCF; |
|
5554 mac_reg = er32(CTRL); |
|
5555 if (mac_reg & E1000_CTRL_RFCE) |
|
5556 phy_reg |= BM_RCTL_RFCE; |
|
5557 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
|
5558 |
|
5559 /* enable PHY wakeup in MAC register */ |
|
5560 ew32(WUFC, wufc); |
|
5561 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); |
|
5562 |
|
5563 /* configure and enable PHY wakeup in PHY registers */ |
|
5564 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
|
5565 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); |
|
5566 |
|
5567 /* activate PHY wakeup */ |
|
5568 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
|
5569 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5570 if (retval) |
|
5571 e_err("Could not set PHY Host Wakeup bit\n"); |
|
5572 release: |
|
5573 hw->phy.ops.release(hw); |
|
5574 |
|
5575 return retval; |
|
5576 } |
|
5577 |
|
5578 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
|
5579 bool runtime) |
|
5580 { |
|
5581 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5582 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5583 struct e1000_hw *hw = &adapter->hw; |
|
5584 u32 ctrl, ctrl_ext, rctl, status; |
|
5585 /* Runtime suspend should only enable wakeup for link changes */ |
|
5586 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
|
5587 int retval = 0; |
|
5588 |
|
5589 netif_device_detach(netdev); |
|
5590 |
|
5591 if (netif_running(netdev)) { |
|
5592 int count = E1000_CHECK_RESET_COUNT; |
|
5593 |
|
5594 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
5595 usleep_range(10000, 20000); |
|
5596 |
|
5597 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
5598 e1000e_down(adapter); |
|
5599 e1000_free_irq(adapter); |
|
5600 } |
|
5601 e1000e_reset_interrupt_capability(adapter); |
|
5602 |
|
5603 retval = pci_save_state(pdev); |
|
5604 if (retval) |
|
5605 return retval; |
|
5606 |
|
5607 status = er32(STATUS); |
|
5608 if (status & E1000_STATUS_LU) |
|
5609 wufc &= ~E1000_WUFC_LNKC; |
|
5610 |
|
5611 if (wufc) { |
|
5612 e1000_setup_rctl(adapter); |
|
5613 e1000e_set_rx_mode(netdev); |
|
5614 |
|
5615 /* turn on all-multi mode if wake on multicast is enabled */ |
|
5616 if (wufc & E1000_WUFC_MC) { |
|
5617 rctl = er32(RCTL); |
|
5618 rctl |= E1000_RCTL_MPE; |
|
5619 ew32(RCTL, rctl); |
|
5620 } |
|
5621 |
|
5622 ctrl = er32(CTRL); |
|
5623 /* advertise wake from D3Cold */ |
|
5624 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
5625 /* phy power management enable */ |
|
5626 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
5627 ctrl |= E1000_CTRL_ADVD3WUC; |
|
5628 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) |
|
5629 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; |
|
5630 ew32(CTRL, ctrl); |
|
5631 |
|
5632 if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
|
5633 adapter->hw.phy.media_type == |
|
5634 e1000_media_type_internal_serdes) { |
|
5635 /* keep the laser running in D3 */ |
|
5636 ctrl_ext = er32(CTRL_EXT); |
|
5637 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
|
5638 ew32(CTRL_EXT, ctrl_ext); |
|
5639 } |
|
5640 |
|
5641 if (adapter->flags & FLAG_IS_ICH) |
|
5642 e1000_suspend_workarounds_ich8lan(&adapter->hw); |
|
5643 |
|
5644 /* Allow time for pending master requests to run */ |
|
5645 e1000e_disable_pcie_master(&adapter->hw); |
|
5646 |
|
5647 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5648 /* enable wakeup by the PHY */ |
|
5649 retval = e1000_init_phy_wakeup(adapter, wufc); |
|
5650 if (retval) |
|
5651 return retval; |
|
5652 } else { |
|
5653 /* enable wakeup by the MAC */ |
|
5654 ew32(WUFC, wufc); |
|
5655 ew32(WUC, E1000_WUC_PME_EN); |
|
5656 } |
|
5657 } else { |
|
5658 ew32(WUC, 0); |
|
5659 ew32(WUFC, 0); |
|
5660 } |
|
5661 |
|
5662 *enable_wake = !!wufc; |
|
5663 |
|
5664 /* make sure adapter isn't asleep if manageability is enabled */ |
|
5665 if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
|
5666 (hw->mac.ops.check_mng_mode(hw))) |
|
5667 *enable_wake = true; |
|
5668 |
|
5669 if (adapter->hw.phy.type == e1000_phy_igp_3) |
|
5670 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
|
5671 |
|
5672 /* |
|
5673 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
5674 * would have already happened in close and is redundant. |
|
5675 */ |
|
5676 e1000e_release_hw_control(adapter); |
|
5677 |
|
5678 pci_disable_device(pdev); |
|
5679 |
|
5680 return 0; |
|
5681 } |
|
5682 |
|
5683 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) |
|
5684 { |
|
5685 if (sleep && wake) { |
|
5686 pci_prepare_to_sleep(pdev); |
|
5687 return; |
|
5688 } |
|
5689 |
|
5690 pci_wake_from_d3(pdev, wake); |
|
5691 pci_set_power_state(pdev, PCI_D3hot); |
|
5692 } |
|
5693 |
|
5694 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, |
|
5695 bool wake) |
|
5696 { |
|
5697 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5698 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5699 |
|
5700 /* |
|
5701 * The pci-e switch on some quad port adapters will report a |
|
5702 * correctable error when the MAC transitions from D0 to D3. To |
|
5703 * prevent this we need to mask off the correctable errors on the |
|
5704 * downstream port of the pci-e switch. |
|
5705 */ |
|
5706 if (adapter->flags & FLAG_IS_QUAD_PORT) { |
|
5707 struct pci_dev *us_dev = pdev->bus->self; |
|
5708 int pos = pci_pcie_cap(us_dev); |
|
5709 u16 devctl; |
|
5710 |
|
5711 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); |
|
5712 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, |
|
5713 (devctl & ~PCI_EXP_DEVCTL_CERE)); |
|
5714 |
|
5715 e1000_power_off(pdev, sleep, wake); |
|
5716 |
|
5717 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); |
|
5718 } else { |
|
5719 e1000_power_off(pdev, sleep, wake); |
|
5720 } |
|
5721 } |
|
5722 |
|
5723 #ifdef CONFIG_PCIEASPM |
|
5724 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5725 { |
|
5726 pci_disable_link_state_locked(pdev, state); |
|
5727 } |
|
5728 #else |
|
5729 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5730 { |
|
5731 int pos; |
|
5732 u16 reg16; |
|
5733 |
|
5734 /* |
|
5735 * Both device and parent should have the same ASPM setting. |
|
5736 * Disable ASPM in downstream component first and then upstream. |
|
5737 */ |
|
5738 pos = pci_pcie_cap(pdev); |
|
5739 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16); |
|
5740 reg16 &= ~state; |
|
5741 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16); |
|
5742 |
|
5743 if (!pdev->bus->self) |
|
5744 return; |
|
5745 |
|
5746 pos = pci_pcie_cap(pdev->bus->self); |
|
5747 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16); |
|
5748 reg16 &= ~state; |
|
5749 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16); |
|
5750 } |
|
5751 #endif |
|
5752 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5753 { |
|
5754 dev_info(&pdev->dev, "Disabling ASPM %s %s\n", |
|
5755 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "", |
|
5756 (state & PCIE_LINK_STATE_L1) ? "L1" : ""); |
|
5757 |
|
5758 __e1000e_disable_aspm(pdev, state); |
|
5759 } |
|
5760 |
|
5761 #ifdef CONFIG_PM |
|
5762 static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
|
5763 { |
|
5764 return !!adapter->tx_ring->buffer_info; |
|
5765 } |
|
5766 |
|
5767 static int __e1000_resume(struct pci_dev *pdev) |
|
5768 { |
|
5769 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5770 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5771 struct e1000_hw *hw = &adapter->hw; |
|
5772 u16 aspm_disable_flag = 0; |
|
5773 u32 err; |
|
5774 |
|
5775 if (adapter->ecdev) |
|
5776 return -EBUSY; |
|
5777 |
|
5778 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
5779 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
5780 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5781 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
5782 if (aspm_disable_flag) |
|
5783 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
5784 |
|
5785 pci_set_power_state(pdev, PCI_D0); |
|
5786 pci_restore_state(pdev); |
|
5787 pci_save_state(pdev); |
|
5788 |
|
5789 e1000e_set_interrupt_capability(adapter); |
|
5790 if (netif_running(netdev)) { |
|
5791 err = e1000_request_irq(adapter); |
|
5792 if (err) |
|
5793 return err; |
|
5794 } |
|
5795 |
|
5796 if (hw->mac.type >= e1000_pch2lan) |
|
5797 e1000_resume_workarounds_pchlan(&adapter->hw); |
|
5798 |
|
5799 e1000e_power_up_phy(adapter); |
|
5800 |
|
5801 /* report the system wakeup cause from S3/S4 */ |
|
5802 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5803 u16 phy_data; |
|
5804 |
|
5805 e1e_rphy(&adapter->hw, BM_WUS, &phy_data); |
|
5806 if (phy_data) { |
|
5807 e_info("PHY Wakeup cause - %s\n", |
|
5808 phy_data & E1000_WUS_EX ? "Unicast Packet" : |
|
5809 phy_data & E1000_WUS_MC ? "Multicast Packet" : |
|
5810 phy_data & E1000_WUS_BC ? "Broadcast Packet" : |
|
5811 phy_data & E1000_WUS_MAG ? "Magic Packet" : |
|
5812 phy_data & E1000_WUS_LNKC ? |
|
5813 "Link Status Change" : "other"); |
|
5814 } |
|
5815 e1e_wphy(&adapter->hw, BM_WUS, ~0); |
|
5816 } else { |
|
5817 u32 wus = er32(WUS); |
|
5818 if (wus) { |
|
5819 e_info("MAC Wakeup cause - %s\n", |
|
5820 wus & E1000_WUS_EX ? "Unicast Packet" : |
|
5821 wus & E1000_WUS_MC ? "Multicast Packet" : |
|
5822 wus & E1000_WUS_BC ? "Broadcast Packet" : |
|
5823 wus & E1000_WUS_MAG ? "Magic Packet" : |
|
5824 wus & E1000_WUS_LNKC ? "Link Status Change" : |
|
5825 "other"); |
|
5826 } |
|
5827 ew32(WUS, ~0); |
|
5828 } |
|
5829 |
|
5830 e1000e_reset(adapter); |
|
5831 |
|
5832 e1000_init_manageability_pt(adapter); |
|
5833 |
|
5834 if (netif_running(netdev)) |
|
5835 e1000e_up(adapter); |
|
5836 |
|
5837 netif_device_attach(netdev); |
|
5838 |
|
5839 /* |
|
5840 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5841 * is up. For all other cases, let the f/w know that the h/w is now |
|
5842 * under the control of the driver. |
|
5843 */ |
|
5844 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5845 e1000e_get_hw_control(adapter); |
|
5846 |
|
5847 return 0; |
|
5848 } |
|
5849 |
|
5850 #ifdef CONFIG_PM_SLEEP |
|
5851 static int e1000_suspend(struct device *dev) |
|
5852 { |
|
5853 struct pci_dev *pdev = to_pci_dev(dev); |
|
5854 int retval; |
|
5855 bool wake; |
|
5856 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5857 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5858 |
|
5859 if (adapter->ecdev) |
|
5860 return -EBUSY; |
|
5861 |
|
5862 retval = __e1000_shutdown(pdev, &wake, false); |
|
5863 if (!retval) |
|
5864 e1000_complete_shutdown(pdev, true, wake); |
|
5865 |
|
5866 return retval; |
|
5867 } |
|
5868 |
|
5869 static int e1000_resume(struct device *dev) |
|
5870 { |
|
5871 struct pci_dev *pdev = to_pci_dev(dev); |
|
5872 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5873 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5874 |
|
5875 if (e1000e_pm_ready(adapter)) |
|
5876 adapter->idle_check = true; |
|
5877 |
|
5878 return __e1000_resume(pdev); |
|
5879 } |
|
5880 #endif /* CONFIG_PM_SLEEP */ |
|
5881 |
|
5882 #ifdef CONFIG_PM_RUNTIME |
|
5883 static int e1000_runtime_suspend(struct device *dev) |
|
5884 { |
|
5885 struct pci_dev *pdev = to_pci_dev(dev); |
|
5886 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5887 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5888 |
|
5889 if (e1000e_pm_ready(adapter)) { |
|
5890 bool wake; |
|
5891 |
|
5892 __e1000_shutdown(pdev, &wake, true); |
|
5893 } |
|
5894 |
|
5895 return 0; |
|
5896 } |
|
5897 |
|
5898 static int e1000_idle(struct device *dev) |
|
5899 { |
|
5900 struct pci_dev *pdev = to_pci_dev(dev); |
|
5901 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5902 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5903 |
|
5904 if (!e1000e_pm_ready(adapter)) |
|
5905 return 0; |
|
5906 |
|
5907 if (adapter->idle_check) { |
|
5908 adapter->idle_check = false; |
|
5909 if (!e1000e_has_link(adapter)) |
|
5910 pm_schedule_suspend(dev, MSEC_PER_SEC); |
|
5911 } |
|
5912 |
|
5913 return -EBUSY; |
|
5914 } |
|
5915 |
|
5916 static int e1000_runtime_resume(struct device *dev) |
|
5917 { |
|
5918 struct pci_dev *pdev = to_pci_dev(dev); |
|
5919 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5920 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5921 |
|
5922 if (!e1000e_pm_ready(adapter)) |
|
5923 return 0; |
|
5924 |
|
5925 adapter->idle_check = !dev->power.runtime_auto; |
|
5926 return __e1000_resume(pdev); |
|
5927 } |
|
5928 #endif /* CONFIG_PM_RUNTIME */ |
|
5929 #endif /* CONFIG_PM */ |
|
5930 |
|
5931 static void e1000_shutdown(struct pci_dev *pdev) |
|
5932 { |
|
5933 bool wake = false; |
|
5934 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5935 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5936 |
|
5937 if (adapter->ecdev) |
|
5938 return; |
|
5939 |
|
5940 __e1000_shutdown(pdev, &wake, false); |
|
5941 |
|
5942 if (system_state == SYSTEM_POWER_OFF) |
|
5943 e1000_complete_shutdown(pdev, false, wake); |
|
5944 } |
|
5945 |
|
5946 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5947 |
|
5948 static irqreturn_t e1000_intr_msix(int irq, void *data) |
|
5949 { |
|
5950 struct net_device *netdev = data; |
|
5951 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5952 |
|
5953 if (adapter->msix_entries) { |
|
5954 int vector, msix_irq; |
|
5955 |
|
5956 vector = 0; |
|
5957 msix_irq = adapter->msix_entries[vector].vector; |
|
5958 disable_irq(msix_irq); |
|
5959 e1000_intr_msix_rx(msix_irq, netdev); |
|
5960 enable_irq(msix_irq); |
|
5961 |
|
5962 vector++; |
|
5963 msix_irq = adapter->msix_entries[vector].vector; |
|
5964 disable_irq(msix_irq); |
|
5965 e1000_intr_msix_tx(msix_irq, netdev); |
|
5966 enable_irq(msix_irq); |
|
5967 |
|
5968 vector++; |
|
5969 msix_irq = adapter->msix_entries[vector].vector; |
|
5970 disable_irq(msix_irq); |
|
5971 e1000_msix_other(msix_irq, netdev); |
|
5972 enable_irq(msix_irq); |
|
5973 } |
|
5974 |
|
5975 return IRQ_HANDLED; |
|
5976 } |
|
5977 |
|
5978 /* |
|
5979 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
5980 * without having to re-enable interrupts. It's not called while |
|
5981 * the interrupt routine is executing. |
|
5982 */ |
|
5983 static void e1000_netpoll(struct net_device *netdev) |
|
5984 { |
|
5985 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5986 |
|
5987 switch (adapter->int_mode) { |
|
5988 case E1000E_INT_MODE_MSIX: |
|
5989 e1000_intr_msix(adapter->pdev->irq, netdev); |
|
5990 break; |
|
5991 case E1000E_INT_MODE_MSI: |
|
5992 disable_irq(adapter->pdev->irq); |
|
5993 e1000_intr_msi(adapter->pdev->irq, netdev); |
|
5994 enable_irq(adapter->pdev->irq); |
|
5995 break; |
|
5996 default: /* E1000E_INT_MODE_LEGACY */ |
|
5997 disable_irq(adapter->pdev->irq); |
|
5998 e1000_intr(adapter->pdev->irq, netdev); |
|
5999 enable_irq(adapter->pdev->irq); |
|
6000 break; |
|
6001 } |
|
6002 } |
|
6003 #endif |
|
6004 |
|
6005 /** |
|
6006 * e1000_io_error_detected - called when PCI error is detected |
|
6007 * @pdev: Pointer to PCI device |
|
6008 * @state: The current pci connection state |
|
6009 * |
|
6010 * This function is called after a PCI bus error affecting |
|
6011 * this device has been detected. |
|
6012 */ |
|
6013 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
6014 pci_channel_state_t state) |
|
6015 { |
|
6016 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6017 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6018 |
|
6019 netif_device_detach(netdev); |
|
6020 |
|
6021 if (state == pci_channel_io_perm_failure) |
|
6022 return PCI_ERS_RESULT_DISCONNECT; |
|
6023 |
|
6024 if (netif_running(netdev)) |
|
6025 e1000e_down(adapter); |
|
6026 pci_disable_device(pdev); |
|
6027 |
|
6028 /* Request a slot slot reset. */ |
|
6029 return PCI_ERS_RESULT_NEED_RESET; |
|
6030 } |
|
6031 |
|
6032 /** |
|
6033 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
6034 * @pdev: Pointer to PCI device |
|
6035 * |
|
6036 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
6037 * resembles the first-half of the e1000_resume routine. |
|
6038 */ |
|
6039 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
6040 { |
|
6041 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6042 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6043 struct e1000_hw *hw = &adapter->hw; |
|
6044 u16 aspm_disable_flag = 0; |
|
6045 int err; |
|
6046 pci_ers_result_t result; |
|
6047 |
|
6048 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6049 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6050 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6051 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6052 if (aspm_disable_flag) |
|
6053 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6054 |
|
6055 err = pci_enable_device_mem(pdev); |
|
6056 if (err) { |
|
6057 dev_err(&pdev->dev, |
|
6058 "Cannot re-enable PCI device after reset.\n"); |
|
6059 result = PCI_ERS_RESULT_DISCONNECT; |
|
6060 } else { |
|
6061 pci_set_master(pdev); |
|
6062 pdev->state_saved = true; |
|
6063 pci_restore_state(pdev); |
|
6064 |
|
6065 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
6066 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
6067 |
|
6068 e1000e_reset(adapter); |
|
6069 ew32(WUS, ~0); |
|
6070 result = PCI_ERS_RESULT_RECOVERED; |
|
6071 } |
|
6072 |
|
6073 pci_cleanup_aer_uncorrect_error_status(pdev); |
|
6074 |
|
6075 return result; |
|
6076 } |
|
6077 |
|
6078 /** |
|
6079 * e1000_io_resume - called when traffic can start flowing again. |
|
6080 * @pdev: Pointer to PCI device |
|
6081 * |
|
6082 * This callback is called when the error recovery driver tells us that |
|
6083 * its OK to resume normal operation. Implementation resembles the |
|
6084 * second-half of the e1000_resume routine. |
|
6085 */ |
|
6086 static void e1000_io_resume(struct pci_dev *pdev) |
|
6087 { |
|
6088 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6089 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6090 |
|
6091 e1000_init_manageability_pt(adapter); |
|
6092 |
|
6093 if (netif_running(netdev)) { |
|
6094 if (e1000e_up(adapter)) { |
|
6095 dev_err(&pdev->dev, |
|
6096 "can't bring device back up after reset\n"); |
|
6097 return; |
|
6098 } |
|
6099 } |
|
6100 |
|
6101 netif_device_attach(netdev); |
|
6102 |
|
6103 /* |
|
6104 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
6105 * is up. For all other cases, let the f/w know that the h/w is now |
|
6106 * under the control of the driver. |
|
6107 */ |
|
6108 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6109 e1000e_get_hw_control(adapter); |
|
6110 |
|
6111 } |
|
6112 |
|
6113 static void e1000_print_device_info(struct e1000_adapter *adapter) |
|
6114 { |
|
6115 struct e1000_hw *hw = &adapter->hw; |
|
6116 struct net_device *netdev = adapter->netdev; |
|
6117 u32 ret_val; |
|
6118 u8 pba_str[E1000_PBANUM_LENGTH]; |
|
6119 |
|
6120 /* print bus type/speed/width info */ |
|
6121 e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
|
6122 /* bus width */ |
|
6123 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
|
6124 "Width x1"), |
|
6125 /* MAC address */ |
|
6126 netdev->dev_addr); |
|
6127 e_info("Intel(R) PRO/%s Network Connection\n", |
|
6128 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); |
|
6129 ret_val = e1000_read_pba_string_generic(hw, pba_str, |
|
6130 E1000_PBANUM_LENGTH); |
|
6131 if (ret_val) |
|
6132 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str)); |
|
6133 e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
|
6134 hw->mac.type, hw->phy.type, pba_str); |
|
6135 } |
|
6136 |
|
6137 static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
|
6138 { |
|
6139 struct e1000_hw *hw = &adapter->hw; |
|
6140 int ret_val; |
|
6141 u16 buf = 0; |
|
6142 |
|
6143 if (hw->mac.type != e1000_82573) |
|
6144 return; |
|
6145 |
|
6146 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); |
|
6147 le16_to_cpus(&buf); |
|
6148 if (!ret_val && (!(buf & (1 << 0)))) { |
|
6149 /* Deep Smart Power Down (DSPD) */ |
|
6150 dev_warn(&adapter->pdev->dev, |
|
6151 "Warning: detected DSPD enabled in EEPROM\n"); |
|
6152 } |
|
6153 } |
|
6154 |
|
6155 static int e1000_set_features(struct net_device *netdev, |
|
6156 netdev_features_t features) |
|
6157 { |
|
6158 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6159 netdev_features_t changed = features ^ netdev->features; |
|
6160 |
|
6161 if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) |
|
6162 adapter->flags |= FLAG_TSO_FORCE; |
|
6163 |
|
6164 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | |
|
6165 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | |
|
6166 NETIF_F_RXALL))) |
|
6167 return 0; |
|
6168 |
|
6169 if (changed & NETIF_F_RXFCS) { |
|
6170 if (features & NETIF_F_RXFCS) { |
|
6171 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6172 } else { |
|
6173 /* We need to take it back to defaults, which might mean |
|
6174 * stripping is still disabled at the adapter level. |
|
6175 */ |
|
6176 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING) |
|
6177 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
|
6178 else |
|
6179 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6180 } |
|
6181 } |
|
6182 |
|
6183 netdev->features = features; |
|
6184 |
|
6185 if (netif_running(netdev)) |
|
6186 e1000e_reinit_locked(adapter); |
|
6187 else |
|
6188 e1000e_reset(adapter); |
|
6189 |
|
6190 return 0; |
|
6191 } |
|
6192 |
|
6193 static const struct net_device_ops e1000e_netdev_ops = { |
|
6194 .ndo_open = e1000_open, |
|
6195 .ndo_stop = e1000_close, |
|
6196 .ndo_start_xmit = e1000_xmit_frame, |
|
6197 .ndo_get_stats64 = e1000e_get_stats64, |
|
6198 .ndo_set_rx_mode = e1000e_set_rx_mode, |
|
6199 .ndo_set_mac_address = e1000_set_mac, |
|
6200 .ndo_change_mtu = e1000_change_mtu, |
|
6201 .ndo_do_ioctl = e1000_ioctl, |
|
6202 .ndo_tx_timeout = e1000_tx_timeout, |
|
6203 .ndo_validate_addr = eth_validate_addr, |
|
6204 |
|
6205 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
6206 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
6207 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
6208 .ndo_poll_controller = e1000_netpoll, |
|
6209 #endif |
|
6210 .ndo_set_features = e1000_set_features, |
|
6211 }; |
|
6212 |
|
6213 /** |
|
6214 * ec_poll - Ethercat poll Routine |
|
6215 * @netdev: net device structure |
|
6216 * |
|
6217 * This function can never fail. |
|
6218 * |
|
6219 **/ |
|
6220 void ec_poll(struct net_device *netdev) |
|
6221 { |
|
6222 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6223 |
|
6224 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
6225 struct e1000_hw *hw = &adapter->hw; |
|
6226 hw->mac.get_link_status = true; |
|
6227 e1000_watchdog_task(&adapter->watchdog_task); |
|
6228 adapter->ec_watchdog_jiffies = jiffies; |
|
6229 } |
|
6230 |
|
6231 #ifdef CONFIG_PCI_MSI |
|
6232 e1000_intr_msi(0, netdev); |
|
6233 #else |
|
6234 e1000_intr(0, netdev); |
|
6235 #endif |
|
6236 } |
|
6237 |
|
6238 /** |
|
6239 * e1000_probe - Device Initialization Routine |
|
6240 * @pdev: PCI device information struct |
|
6241 * @ent: entry in e1000_pci_tbl |
|
6242 * |
|
6243 * Returns 0 on success, negative on failure |
|
6244 * |
|
6245 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
6246 * The OS initialization, configuring of the adapter private structure, |
|
6247 * and a hardware reset occur. |
|
6248 **/ |
|
6249 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
6250 const struct pci_device_id *ent) |
|
6251 { |
|
6252 struct net_device *netdev; |
|
6253 struct e1000_adapter *adapter; |
|
6254 struct e1000_hw *hw; |
|
6255 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; |
|
6256 resource_size_t mmio_start, mmio_len; |
|
6257 resource_size_t flash_start, flash_len; |
|
6258 static int cards_found; |
|
6259 u16 aspm_disable_flag = 0; |
|
6260 int i, err, pci_using_dac; |
|
6261 u16 eeprom_data = 0; |
|
6262 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
6263 |
|
6264 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6265 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6266 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6267 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6268 if (aspm_disable_flag) |
|
6269 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6270 |
|
6271 err = pci_enable_device_mem(pdev); |
|
6272 if (err) |
|
6273 return err; |
|
6274 |
|
6275 pci_using_dac = 0; |
|
6276 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
6277 if (!err) { |
|
6278 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
6279 if (!err) |
|
6280 pci_using_dac = 1; |
|
6281 } else { |
|
6282 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
6283 if (err) { |
|
6284 err = dma_set_coherent_mask(&pdev->dev, |
|
6285 DMA_BIT_MASK(32)); |
|
6286 if (err) { |
|
6287 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); |
|
6288 goto err_dma; |
|
6289 } |
|
6290 } |
|
6291 } |
|
6292 |
|
6293 err = pci_request_selected_regions_exclusive(pdev, |
|
6294 pci_select_bars(pdev, IORESOURCE_MEM), |
|
6295 e1000e_driver_name); |
|
6296 if (err) |
|
6297 goto err_pci_reg; |
|
6298 |
|
6299 /* AER (Advanced Error Reporting) hooks */ |
|
6300 pci_enable_pcie_error_reporting(pdev); |
|
6301 |
|
6302 pci_set_master(pdev); |
|
6303 /* PCI config space info */ |
|
6304 err = pci_save_state(pdev); |
|
6305 if (err) |
|
6306 goto err_alloc_etherdev; |
|
6307 |
|
6308 err = -ENOMEM; |
|
6309 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
6310 if (!netdev) |
|
6311 goto err_alloc_etherdev; |
|
6312 |
|
6313 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
6314 |
|
6315 netdev->irq = pdev->irq; |
|
6316 |
|
6317 pci_set_drvdata(pdev, netdev); |
|
6318 adapter = netdev_priv(netdev); |
|
6319 hw = &adapter->hw; |
|
6320 adapter->netdev = netdev; |
|
6321 adapter->pdev = pdev; |
|
6322 adapter->ei = ei; |
|
6323 adapter->pba = ei->pba; |
|
6324 adapter->flags = ei->flags; |
|
6325 adapter->flags2 = ei->flags2; |
|
6326 adapter->hw.adapter = adapter; |
|
6327 adapter->hw.mac.type = ei->mac; |
|
6328 adapter->max_hw_frame_size = ei->max_hw_frame_size; |
|
6329 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
|
6330 |
|
6331 mmio_start = pci_resource_start(pdev, 0); |
|
6332 mmio_len = pci_resource_len(pdev, 0); |
|
6333 |
|
6334 err = -EIO; |
|
6335 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
6336 if (!adapter->hw.hw_addr) |
|
6337 goto err_ioremap; |
|
6338 |
|
6339 if ((adapter->flags & FLAG_HAS_FLASH) && |
|
6340 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
6341 flash_start = pci_resource_start(pdev, 1); |
|
6342 flash_len = pci_resource_len(pdev, 1); |
|
6343 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
6344 if (!adapter->hw.flash_address) |
|
6345 goto err_flashmap; |
|
6346 } |
|
6347 |
|
6348 /* construct the net_device struct */ |
|
6349 netdev->netdev_ops = &e1000e_netdev_ops; |
|
6350 e1000e_set_ethtool_ops(netdev); |
|
6351 netdev->watchdog_timeo = 5 * HZ; |
|
6352 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64); |
|
6353 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
|
6354 |
|
6355 netdev->mem_start = mmio_start; |
|
6356 netdev->mem_end = mmio_start + mmio_len; |
|
6357 |
|
6358 adapter->bd_number = cards_found++; |
|
6359 |
|
6360 e1000e_check_options(adapter); |
|
6361 |
|
6362 /* setup adapter struct */ |
|
6363 err = e1000_sw_init(adapter); |
|
6364 if (err) |
|
6365 goto err_sw_init; |
|
6366 |
|
6367 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
|
6368 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
|
6369 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
|
6370 |
|
6371 err = ei->get_variants(adapter); |
|
6372 if (err) |
|
6373 goto err_hw_init; |
|
6374 |
|
6375 if ((adapter->flags & FLAG_IS_ICH) && |
|
6376 (adapter->flags & FLAG_READ_ONLY_NVM)) |
|
6377 e1000e_write_protect_nvm_ich8lan(&adapter->hw); |
|
6378 |
|
6379 hw->mac.ops.get_bus_info(&adapter->hw); |
|
6380 |
|
6381 adapter->hw.phy.autoneg_wait_to_complete = 0; |
|
6382 |
|
6383 /* Copper options */ |
|
6384 if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
|
6385 adapter->hw.phy.mdix = AUTO_ALL_MODES; |
|
6386 adapter->hw.phy.disable_polarity_correction = 0; |
|
6387 adapter->hw.phy.ms_type = e1000_ms_hw_default; |
|
6388 } |
|
6389 |
|
6390 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw)) |
|
6391 dev_info(&pdev->dev, |
|
6392 "PHY reset is blocked due to SOL/IDER session.\n"); |
|
6393 |
|
6394 /* Set initial default active device features */ |
|
6395 netdev->features = (NETIF_F_SG | |
|
6396 NETIF_F_HW_VLAN_RX | |
|
6397 NETIF_F_HW_VLAN_TX | |
|
6398 NETIF_F_TSO | |
|
6399 NETIF_F_TSO6 | |
|
6400 NETIF_F_RXHASH | |
|
6401 NETIF_F_RXCSUM | |
|
6402 NETIF_F_HW_CSUM); |
|
6403 |
|
6404 /* Set user-changeable features (subset of all device features) */ |
|
6405 netdev->hw_features = netdev->features; |
|
6406 netdev->hw_features |= NETIF_F_RXFCS; |
|
6407 netdev->priv_flags |= IFF_SUPP_NOFCS; |
|
6408 netdev->hw_features |= NETIF_F_RXALL; |
|
6409 |
|
6410 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
6411 netdev->features |= NETIF_F_HW_VLAN_FILTER; |
|
6412 |
|
6413 netdev->vlan_features |= (NETIF_F_SG | |
|
6414 NETIF_F_TSO | |
|
6415 NETIF_F_TSO6 | |
|
6416 NETIF_F_HW_CSUM); |
|
6417 |
|
6418 netdev->priv_flags |= IFF_UNICAST_FLT; |
|
6419 |
|
6420 if (pci_using_dac) { |
|
6421 netdev->features |= NETIF_F_HIGHDMA; |
|
6422 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
6423 } |
|
6424 |
|
6425 if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
|
6426 adapter->flags |= FLAG_MNG_PT_ENABLED; |
|
6427 |
|
6428 /* |
|
6429 * before reading the NVM, reset the controller to |
|
6430 * put the device in a known good starting state |
|
6431 */ |
|
6432 adapter->hw.mac.ops.reset_hw(&adapter->hw); |
|
6433 |
|
6434 /* |
|
6435 * systems with ASPM and others may see the checksum fail on the first |
|
6436 * attempt. Let's give it a few tries |
|
6437 */ |
|
6438 for (i = 0;; i++) { |
|
6439 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) |
|
6440 break; |
|
6441 if (i == 2) { |
|
6442 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
|
6443 err = -EIO; |
|
6444 goto err_eeprom; |
|
6445 } |
|
6446 } |
|
6447 |
|
6448 e1000_eeprom_checks(adapter); |
|
6449 |
|
6450 /* copy the MAC address */ |
|
6451 if (e1000e_read_mac_addr(&adapter->hw)) |
|
6452 dev_err(&pdev->dev, |
|
6453 "NVM Read Error while reading MAC address\n"); |
|
6454 |
|
6455 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6456 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6457 |
|
6458 if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
6459 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
|
6460 netdev->perm_addr); |
|
6461 err = -EIO; |
|
6462 goto err_eeprom; |
|
6463 } |
|
6464 |
|
6465 init_timer(&adapter->watchdog_timer); |
|
6466 adapter->watchdog_timer.function = e1000_watchdog; |
|
6467 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
6468 |
|
6469 init_timer(&adapter->phy_info_timer); |
|
6470 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
6471 adapter->phy_info_timer.data = (unsigned long) adapter; |
|
6472 |
|
6473 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
6474 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); |
|
6475 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
|
6476 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); |
|
6477 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
|
6478 |
|
6479 /* Initialize link parameters. User can change them with ethtool */ |
|
6480 adapter->hw.mac.autoneg = 1; |
|
6481 adapter->fc_autoneg = true; |
|
6482 adapter->hw.fc.requested_mode = e1000_fc_default; |
|
6483 adapter->hw.fc.current_mode = e1000_fc_default; |
|
6484 adapter->hw.phy.autoneg_advertised = 0x2f; |
|
6485 |
|
6486 /* ring size defaults */ |
|
6487 adapter->rx_ring->count = E1000_DEFAULT_RXD; |
|
6488 adapter->tx_ring->count = E1000_DEFAULT_TXD; |
|
6489 |
|
6490 /* |
|
6491 * Initial Wake on LAN setting - If APM wake is enabled in |
|
6492 * the EEPROM, enable the ACPI Magic Packet filter |
|
6493 */ |
|
6494 if (adapter->flags & FLAG_APME_IN_WUC) { |
|
6495 /* APME bit in EEPROM is mapped to WUC.APME */ |
|
6496 eeprom_data = er32(WUC); |
|
6497 eeprom_apme_mask = E1000_WUC_APME; |
|
6498 if ((hw->mac.type > e1000_ich10lan) && |
|
6499 (eeprom_data & E1000_WUC_PHY_WAKE)) |
|
6500 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
|
6501 } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
|
6502 if (adapter->flags & FLAG_APME_CHECK_PORT_B && |
|
6503 (adapter->hw.bus.func == 1)) |
|
6504 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B, |
|
6505 1, &eeprom_data); |
|
6506 else |
|
6507 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A, |
|
6508 1, &eeprom_data); |
|
6509 } |
|
6510 |
|
6511 /* fetch WoL from EEPROM */ |
|
6512 if (eeprom_data & eeprom_apme_mask) |
|
6513 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
6514 |
|
6515 /* |
|
6516 * now that we have the eeprom settings, apply the special cases |
|
6517 * where the eeprom may be wrong or the board simply won't support |
|
6518 * wake on lan on a particular port |
|
6519 */ |
|
6520 if (!(adapter->flags & FLAG_HAS_WOL)) |
|
6521 adapter->eeprom_wol = 0; |
|
6522 |
|
6523 /* initialize the wol settings based on the eeprom settings */ |
|
6524 adapter->wol = adapter->eeprom_wol; |
|
6525 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
6526 |
|
6527 /* save off EEPROM version number */ |
|
6528 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
|
6529 |
|
6530 /* reset the hardware with the new settings */ |
|
6531 e1000e_reset(adapter); |
|
6532 |
|
6533 /* |
|
6534 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
6535 * is up. For all other cases, let the f/w know that the h/w is now |
|
6536 * under the control of the driver. |
|
6537 */ |
|
6538 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6539 e1000e_get_hw_control(adapter); |
|
6540 |
|
6541 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
6542 if (adapter->ecdev) { |
|
6543 err = ecdev_open(adapter->ecdev); |
|
6544 if (err) { |
|
6545 ecdev_withdraw(adapter->ecdev); |
|
6546 goto err_register; |
|
6547 } |
|
6548 adapter->ec_watchdog_jiffies = jiffies; |
|
6549 } else { |
|
6550 strlcpy(netdev->name, "eth%d", sizeof(netdev->name)); |
|
6551 err = register_netdev(netdev); |
|
6552 if (err) |
|
6553 goto err_register; |
|
6554 |
|
6555 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
6556 netif_carrier_off(netdev); |
|
6557 } |
|
6558 |
|
6559 e1000_print_device_info(adapter); |
|
6560 |
|
6561 if (pci_dev_run_wake(pdev)) |
|
6562 pm_runtime_put_noidle(&pdev->dev); |
|
6563 |
|
6564 return 0; |
|
6565 |
|
6566 err_register: |
|
6567 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6568 e1000e_release_hw_control(adapter); |
|
6569 err_eeprom: |
|
6570 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw)) |
|
6571 e1000_phy_hw_reset(&adapter->hw); |
|
6572 err_hw_init: |
|
6573 kfree(adapter->tx_ring); |
|
6574 kfree(adapter->rx_ring); |
|
6575 err_sw_init: |
|
6576 if (adapter->hw.flash_address) |
|
6577 iounmap(adapter->hw.flash_address); |
|
6578 e1000e_reset_interrupt_capability(adapter); |
|
6579 err_flashmap: |
|
6580 iounmap(adapter->hw.hw_addr); |
|
6581 err_ioremap: |
|
6582 free_netdev(netdev); |
|
6583 err_alloc_etherdev: |
|
6584 pci_release_selected_regions(pdev, |
|
6585 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6586 err_pci_reg: |
|
6587 err_dma: |
|
6588 pci_disable_device(pdev); |
|
6589 return err; |
|
6590 } |
|
6591 |
|
6592 /** |
|
6593 * e1000_remove - Device Removal Routine |
|
6594 * @pdev: PCI device information struct |
|
6595 * |
|
6596 * e1000_remove is called by the PCI subsystem to alert the driver |
|
6597 * that it should release a PCI device. The could be caused by a |
|
6598 * Hot-Plug event, or because the driver is going to be removed from |
|
6599 * memory. |
|
6600 **/ |
|
6601 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
6602 { |
|
6603 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6604 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6605 bool down = test_bit(__E1000_DOWN, &adapter->state); |
|
6606 |
|
6607 if (adapter->ecdev) { |
|
6608 ecdev_close(adapter->ecdev); |
|
6609 ecdev_withdraw(adapter->ecdev); |
|
6610 } |
|
6611 |
|
6612 /* |
|
6613 * The timers may be rescheduled, so explicitly disable them |
|
6614 * from being rescheduled. |
|
6615 */ |
|
6616 if (!down) |
|
6617 set_bit(__E1000_DOWN, &adapter->state); |
|
6618 del_timer_sync(&adapter->watchdog_timer); |
|
6619 del_timer_sync(&adapter->phy_info_timer); |
|
6620 |
|
6621 cancel_work_sync(&adapter->reset_task); |
|
6622 cancel_work_sync(&adapter->watchdog_task); |
|
6623 cancel_work_sync(&adapter->downshift_task); |
|
6624 cancel_work_sync(&adapter->update_phy_task); |
|
6625 cancel_work_sync(&adapter->print_hang_task); |
|
6626 |
|
6627 if (!(netdev->flags & IFF_UP)) |
|
6628 e1000_power_down_phy(adapter); |
|
6629 |
|
6630 /* Don't lie to e1000_close() down the road. */ |
|
6631 if (!down) |
|
6632 clear_bit(__E1000_DOWN, &adapter->state); |
|
6633 |
|
6634 if (!adapter->ecdev) { |
|
6635 unregister_netdev(netdev); |
|
6636 } |
|
6637 |
|
6638 if (pci_dev_run_wake(pdev)) |
|
6639 pm_runtime_get_noresume(&pdev->dev); |
|
6640 |
|
6641 /* |
|
6642 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
6643 * would have already happened in close and is redundant. |
|
6644 */ |
|
6645 e1000e_release_hw_control(adapter); |
|
6646 |
|
6647 e1000e_reset_interrupt_capability(adapter); |
|
6648 kfree(adapter->tx_ring); |
|
6649 kfree(adapter->rx_ring); |
|
6650 |
|
6651 iounmap(adapter->hw.hw_addr); |
|
6652 if (adapter->hw.flash_address) |
|
6653 iounmap(adapter->hw.flash_address); |
|
6654 pci_release_selected_regions(pdev, |
|
6655 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6656 |
|
6657 free_netdev(netdev); |
|
6658 |
|
6659 /* AER disable */ |
|
6660 pci_disable_pcie_error_reporting(pdev); |
|
6661 |
|
6662 pci_disable_device(pdev); |
|
6663 } |
|
6664 |
|
6665 /* PCI Error Recovery (ERS) */ |
|
6666 static struct pci_error_handlers e1000_err_handler = { |
|
6667 .error_detected = e1000_io_error_detected, |
|
6668 .slot_reset = e1000_io_slot_reset, |
|
6669 .resume = e1000_io_resume, |
|
6670 }; |
|
6671 |
|
6672 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
|
6673 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
|
6674 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, |
|
6675 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, |
|
6676 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, |
|
6677 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
|
6678 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, |
|
6679 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
|
6680 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, |
|
6681 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, |
|
6682 |
|
6683 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
|
6684 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, |
|
6685 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, |
|
6686 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, |
|
6687 |
|
6688 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
|
6689 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, |
|
6690 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, |
|
6691 |
|
6692 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
|
6693 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
|
6694 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
|
6695 |
|
6696 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
|
6697 board_80003es2lan }, |
|
6698 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), |
|
6699 board_80003es2lan }, |
|
6700 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), |
|
6701 board_80003es2lan }, |
|
6702 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), |
|
6703 board_80003es2lan }, |
|
6704 |
|
6705 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
|
6706 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, |
|
6707 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, |
|
6708 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, |
|
6709 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, |
|
6710 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, |
|
6711 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, |
|
6712 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
|
6713 |
|
6714 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
|
6715 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, |
|
6716 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, |
|
6717 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, |
|
6718 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, |
|
6719 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
|
6720 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
|
6721 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, |
|
6722 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, |
|
6723 |
|
6724 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, |
|
6725 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, |
|
6726 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, |
|
6727 |
|
6728 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
|
6729 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, |
|
6730 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
|
6731 |
|
6732 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
|
6733 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, |
|
6734 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, |
|
6735 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, |
|
6736 |
|
6737 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
|
6738 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, |
|
6739 |
|
6740 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt }, |
|
6741 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt }, |
|
6742 |
|
6743 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ |
|
6744 }; |
|
6745 //MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
|
6746 |
|
6747 #ifdef CONFIG_PM |
|
6748 static const struct dev_pm_ops e1000_pm_ops = { |
|
6749 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume) |
|
6750 SET_RUNTIME_PM_OPS(e1000_runtime_suspend, |
|
6751 e1000_runtime_resume, e1000_idle) |
|
6752 }; |
|
6753 #endif |
|
6754 |
|
6755 /* PCI Device API Driver */ |
|
6756 static struct pci_driver e1000_driver = { |
|
6757 .name = e1000e_driver_name, |
|
6758 .id_table = e1000_pci_tbl, |
|
6759 .probe = e1000_probe, |
|
6760 .remove = __devexit_p(e1000_remove), |
|
6761 #ifdef CONFIG_PM |
|
6762 .driver = { |
|
6763 .pm = &e1000_pm_ops, |
|
6764 }, |
|
6765 #endif |
|
6766 .shutdown = e1000_shutdown, |
|
6767 .err_handler = &e1000_err_handler |
|
6768 }; |
|
6769 |
|
6770 /** |
|
6771 * e1000_init_module - Driver Registration Routine |
|
6772 * |
|
6773 * e1000_init_module is the first routine called when the driver is |
|
6774 * loaded. All it does is register with the PCI subsystem. |
|
6775 **/ |
|
6776 static int __init e1000_init_module(void) |
|
6777 { |
|
6778 int ret; |
|
6779 pr_info("EtherCAT-capable Intel(R) PRO/1000 Network Driver - %s\n", |
|
6780 e1000e_driver_version); |
|
6781 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n"); |
|
6782 ret = pci_register_driver(&e1000_driver); |
|
6783 |
|
6784 return ret; |
|
6785 } |
|
6786 module_init(e1000_init_module); |
|
6787 |
|
6788 /** |
|
6789 * e1000_exit_module - Driver Exit Cleanup Routine |
|
6790 * |
|
6791 * e1000_exit_module is called just before the driver is removed |
|
6792 * from memory. |
|
6793 **/ |
|
6794 static void __exit e1000_exit_module(void) |
|
6795 { |
|
6796 pci_unregister_driver(&e1000_driver); |
|
6797 } |
|
6798 module_exit(e1000_exit_module); |
|
6799 |
|
6800 |
|
6801 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
|
6802 MODULE_DESCRIPTION("Ethercat-capable Intel(R) PRO/1000 Network Driver"); |
|
6803 MODULE_LICENSE("GPL"); |
|
6804 MODULE_VERSION(DRV_VERSION); |
|
6805 |
|
6806 /* netdev.c */ |