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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2012 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 *******************************************************************************/ |
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28 |
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29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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30 |
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31 #include <linux/module.h> |
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32 #include <linux/types.h> |
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33 #include <linux/init.h> |
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34 #include <linux/pci.h> |
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35 #include <linux/vmalloc.h> |
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36 #include <linux/pagemap.h> |
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37 #include <linux/delay.h> |
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38 #include <linux/netdevice.h> |
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39 #include <linux/interrupt.h> |
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40 #include <linux/tcp.h> |
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41 #include <linux/ipv6.h> |
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42 #include <linux/slab.h> |
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43 #include <net/checksum.h> |
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44 #include <net/ip6_checksum.h> |
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45 #include <linux/mii.h> |
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46 #include <linux/ethtool.h> |
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47 #include <linux/if_vlan.h> |
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48 #include <linux/cpu.h> |
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49 #include <linux/smp.h> |
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50 #include <linux/pm_qos.h> |
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51 #include <linux/pm_runtime.h> |
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52 #include <linux/aer.h> |
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53 #include <linux/prefetch.h> |
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54 |
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55 #include "e1000.h" |
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56 |
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57 #define DRV_EXTRAVERSION "-k" |
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58 |
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59 #define DRV_VERSION "2.0.0" DRV_EXTRAVERSION |
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60 char e1000e_driver_name[] = "e1000e"; |
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61 const char e1000e_driver_version[] = DRV_VERSION; |
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62 |
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63 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
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64 static int debug = -1; |
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65 module_param(debug, int, 0); |
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66 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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67 |
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68 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state); |
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69 |
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70 static const struct e1000_info *e1000_info_tbl[] = { |
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71 [board_82571] = &e1000_82571_info, |
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72 [board_82572] = &e1000_82572_info, |
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73 [board_82573] = &e1000_82573_info, |
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74 [board_82574] = &e1000_82574_info, |
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75 [board_82583] = &e1000_82583_info, |
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76 [board_80003es2lan] = &e1000_es2_info, |
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77 [board_ich8lan] = &e1000_ich8_info, |
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78 [board_ich9lan] = &e1000_ich9_info, |
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79 [board_ich10lan] = &e1000_ich10_info, |
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80 [board_pchlan] = &e1000_pch_info, |
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81 [board_pch2lan] = &e1000_pch2_info, |
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82 [board_pch_lpt] = &e1000_pch_lpt_info, |
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83 }; |
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84 |
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85 struct e1000_reg_info { |
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86 u32 ofs; |
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87 char *name; |
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88 }; |
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89 |
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90 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */ |
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91 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */ |
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92 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */ |
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93 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */ |
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94 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */ |
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95 |
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96 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */ |
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97 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */ |
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98 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */ |
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99 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */ |
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100 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */ |
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101 |
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102 static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
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103 |
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104 /* General Registers */ |
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105 {E1000_CTRL, "CTRL"}, |
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106 {E1000_STATUS, "STATUS"}, |
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107 {E1000_CTRL_EXT, "CTRL_EXT"}, |
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108 |
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109 /* Interrupt Registers */ |
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110 {E1000_ICR, "ICR"}, |
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111 |
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112 /* Rx Registers */ |
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113 {E1000_RCTL, "RCTL"}, |
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114 {E1000_RDLEN(0), "RDLEN"}, |
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115 {E1000_RDH(0), "RDH"}, |
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116 {E1000_RDT(0), "RDT"}, |
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117 {E1000_RDTR, "RDTR"}, |
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118 {E1000_RXDCTL(0), "RXDCTL"}, |
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119 {E1000_ERT, "ERT"}, |
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120 {E1000_RDBAL(0), "RDBAL"}, |
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121 {E1000_RDBAH(0), "RDBAH"}, |
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122 {E1000_RDFH, "RDFH"}, |
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123 {E1000_RDFT, "RDFT"}, |
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124 {E1000_RDFHS, "RDFHS"}, |
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125 {E1000_RDFTS, "RDFTS"}, |
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126 {E1000_RDFPC, "RDFPC"}, |
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127 |
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128 /* Tx Registers */ |
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129 {E1000_TCTL, "TCTL"}, |
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130 {E1000_TDBAL(0), "TDBAL"}, |
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131 {E1000_TDBAH(0), "TDBAH"}, |
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132 {E1000_TDLEN(0), "TDLEN"}, |
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133 {E1000_TDH(0), "TDH"}, |
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134 {E1000_TDT(0), "TDT"}, |
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135 {E1000_TIDV, "TIDV"}, |
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136 {E1000_TXDCTL(0), "TXDCTL"}, |
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137 {E1000_TADV, "TADV"}, |
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138 {E1000_TARC(0), "TARC"}, |
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139 {E1000_TDFH, "TDFH"}, |
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140 {E1000_TDFT, "TDFT"}, |
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141 {E1000_TDFHS, "TDFHS"}, |
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142 {E1000_TDFTS, "TDFTS"}, |
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143 {E1000_TDFPC, "TDFPC"}, |
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144 |
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145 /* List Terminator */ |
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146 {0, NULL} |
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147 }; |
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148 |
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149 /* |
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150 * e1000_regdump - register printout routine |
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151 */ |
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152 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
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153 { |
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154 int n = 0; |
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155 char rname[16]; |
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156 u32 regs[8]; |
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157 |
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158 switch (reginfo->ofs) { |
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159 case E1000_RXDCTL(0): |
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160 for (n = 0; n < 2; n++) |
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161 regs[n] = __er32(hw, E1000_RXDCTL(n)); |
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162 break; |
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163 case E1000_TXDCTL(0): |
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164 for (n = 0; n < 2; n++) |
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165 regs[n] = __er32(hw, E1000_TXDCTL(n)); |
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166 break; |
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167 case E1000_TARC(0): |
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168 for (n = 0; n < 2; n++) |
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169 regs[n] = __er32(hw, E1000_TARC(n)); |
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170 break; |
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171 default: |
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172 pr_info("%-15s %08x\n", |
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173 reginfo->name, __er32(hw, reginfo->ofs)); |
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174 return; |
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175 } |
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176 |
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177 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); |
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178 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]); |
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179 } |
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180 |
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181 static void e1000e_dump_ps_pages(struct e1000_adapter *adapter, |
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182 struct e1000_buffer *bi) |
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183 { |
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184 int i; |
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185 struct e1000_ps_page *ps_page; |
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186 |
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187 for (i = 0; i < adapter->rx_ps_pages; i++) { |
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188 ps_page = &bi->ps_pages[i]; |
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189 |
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190 if (ps_page->page) { |
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191 pr_info("packet dump for ps_page %d:\n", i); |
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192 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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193 16, 1, page_address(ps_page->page), |
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194 PAGE_SIZE, true); |
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195 } |
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196 } |
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197 } |
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198 |
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199 /* |
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200 * e1000e_dump - Print registers, Tx-ring and Rx-ring |
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201 */ |
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202 static void e1000e_dump(struct e1000_adapter *adapter) |
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203 { |
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204 struct net_device *netdev = adapter->netdev; |
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205 struct e1000_hw *hw = &adapter->hw; |
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206 struct e1000_reg_info *reginfo; |
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207 struct e1000_ring *tx_ring = adapter->tx_ring; |
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208 struct e1000_tx_desc *tx_desc; |
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209 struct my_u0 { |
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210 __le64 a; |
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211 __le64 b; |
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212 } *u0; |
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213 struct e1000_buffer *buffer_info; |
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214 struct e1000_ring *rx_ring = adapter->rx_ring; |
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215 union e1000_rx_desc_packet_split *rx_desc_ps; |
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216 union e1000_rx_desc_extended *rx_desc; |
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217 struct my_u1 { |
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218 __le64 a; |
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219 __le64 b; |
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220 __le64 c; |
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221 __le64 d; |
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222 } *u1; |
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223 u32 staterr; |
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224 int i = 0; |
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225 |
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226 if (!netif_msg_hw(adapter)) |
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227 return; |
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228 |
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229 /* Print netdevice Info */ |
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230 if (netdev) { |
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231 dev_info(&adapter->pdev->dev, "Net device Info\n"); |
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232 pr_info("Device Name state trans_start last_rx\n"); |
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233 pr_info("%-15s %016lX %016lX %016lX\n", |
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234 netdev->name, netdev->state, netdev->trans_start, |
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235 netdev->last_rx); |
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236 } |
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237 |
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238 /* Print Registers */ |
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239 dev_info(&adapter->pdev->dev, "Register Dump\n"); |
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240 pr_info(" Register Name Value\n"); |
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241 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
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242 reginfo->name; reginfo++) { |
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243 e1000_regdump(hw, reginfo); |
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244 } |
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245 |
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246 /* Print Tx Ring Summary */ |
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247 if (!netdev || !netif_running(netdev)) |
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248 return; |
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249 |
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250 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
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251 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
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252 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
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253 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", |
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254 0, tx_ring->next_to_use, tx_ring->next_to_clean, |
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255 (unsigned long long)buffer_info->dma, |
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256 buffer_info->length, |
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257 buffer_info->next_to_watch, |
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258 (unsigned long long)buffer_info->time_stamp); |
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259 |
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260 /* Print Tx Ring */ |
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261 if (!netif_msg_tx_done(adapter)) |
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262 goto rx_ring_summary; |
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263 |
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264 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
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265 |
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266 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) |
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267 * |
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268 * Legacy Transmit Descriptor |
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269 * +--------------------------------------------------------------+ |
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270 * 0 | Buffer Address [63:0] (Reserved on Write Back) | |
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271 * +--------------------------------------------------------------+ |
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272 * 8 | Special | CSS | Status | CMD | CSO | Length | |
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273 * +--------------------------------------------------------------+ |
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274 * 63 48 47 36 35 32 31 24 23 16 15 0 |
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275 * |
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276 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload |
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277 * 63 48 47 40 39 32 31 16 15 8 7 0 |
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278 * +----------------------------------------------------------------+ |
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279 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | |
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280 * +----------------------------------------------------------------+ |
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281 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | |
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282 * +----------------------------------------------------------------+ |
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283 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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284 * |
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285 * Extended Data Descriptor (DTYP=0x1) |
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286 * +----------------------------------------------------------------+ |
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287 * 0 | Buffer Address [63:0] | |
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288 * +----------------------------------------------------------------+ |
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289 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | |
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290 * +----------------------------------------------------------------+ |
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291 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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292 */ |
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293 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n"); |
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294 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n"); |
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295 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n"); |
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296 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
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297 const char *next_desc; |
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298 tx_desc = E1000_TX_DESC(*tx_ring, i); |
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299 buffer_info = &tx_ring->buffer_info[i]; |
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300 u0 = (struct my_u0 *)tx_desc; |
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301 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
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302 next_desc = " NTC/U"; |
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303 else if (i == tx_ring->next_to_use) |
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304 next_desc = " NTU"; |
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305 else if (i == tx_ring->next_to_clean) |
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306 next_desc = " NTC"; |
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307 else |
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308 next_desc = ""; |
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309 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n", |
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310 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : |
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311 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), |
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312 i, |
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313 (unsigned long long)le64_to_cpu(u0->a), |
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314 (unsigned long long)le64_to_cpu(u0->b), |
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315 (unsigned long long)buffer_info->dma, |
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316 buffer_info->length, buffer_info->next_to_watch, |
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317 (unsigned long long)buffer_info->time_stamp, |
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318 buffer_info->skb, next_desc); |
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319 |
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320 if (netif_msg_pktdata(adapter) && buffer_info->skb) |
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321 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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322 16, 1, buffer_info->skb->data, |
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323 buffer_info->skb->len, true); |
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324 } |
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325 |
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326 /* Print Rx Ring Summary */ |
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327 rx_ring_summary: |
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328 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
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329 pr_info("Queue [NTU] [NTC]\n"); |
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330 pr_info(" %5d %5X %5X\n", |
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331 0, rx_ring->next_to_use, rx_ring->next_to_clean); |
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332 |
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333 /* Print Rx Ring */ |
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334 if (!netif_msg_rx_status(adapter)) |
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335 return; |
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336 |
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337 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
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338 switch (adapter->rx_ps_pages) { |
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339 case 1: |
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340 case 2: |
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341 case 3: |
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342 /* [Extended] Packet Split Receive Descriptor Format |
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343 * |
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344 * +-----------------------------------------------------+ |
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345 * 0 | Buffer Address 0 [63:0] | |
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346 * +-----------------------------------------------------+ |
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347 * 8 | Buffer Address 1 [63:0] | |
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348 * +-----------------------------------------------------+ |
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349 * 16 | Buffer Address 2 [63:0] | |
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350 * +-----------------------------------------------------+ |
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351 * 24 | Buffer Address 3 [63:0] | |
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352 * +-----------------------------------------------------+ |
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353 */ |
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354 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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355 /* [Extended] Receive Descriptor (Write-Back) Format |
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356 * |
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357 * 63 48 47 32 31 13 12 8 7 4 3 0 |
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358 * +------------------------------------------------------+ |
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359 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | |
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360 * | Checksum | Ident | | Queue | | Type | |
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361 * +------------------------------------------------------+ |
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362 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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363 * +------------------------------------------------------+ |
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364 * 63 48 47 32 31 20 19 0 |
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365 */ |
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366 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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367 for (i = 0; i < rx_ring->count; i++) { |
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368 const char *next_desc; |
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369 buffer_info = &rx_ring->buffer_info[i]; |
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370 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); |
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371 u1 = (struct my_u1 *)rx_desc_ps; |
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372 staterr = |
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373 le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
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374 |
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375 if (i == rx_ring->next_to_use) |
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376 next_desc = " NTU"; |
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377 else if (i == rx_ring->next_to_clean) |
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378 next_desc = " NTC"; |
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379 else |
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380 next_desc = ""; |
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381 |
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382 if (staterr & E1000_RXD_STAT_DD) { |
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383 /* Descriptor Done */ |
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384 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n", |
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385 "RWB", i, |
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386 (unsigned long long)le64_to_cpu(u1->a), |
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387 (unsigned long long)le64_to_cpu(u1->b), |
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388 (unsigned long long)le64_to_cpu(u1->c), |
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389 (unsigned long long)le64_to_cpu(u1->d), |
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390 buffer_info->skb, next_desc); |
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391 } else { |
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392 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n", |
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393 "R ", i, |
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394 (unsigned long long)le64_to_cpu(u1->a), |
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395 (unsigned long long)le64_to_cpu(u1->b), |
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396 (unsigned long long)le64_to_cpu(u1->c), |
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397 (unsigned long long)le64_to_cpu(u1->d), |
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398 (unsigned long long)buffer_info->dma, |
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399 buffer_info->skb, next_desc); |
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400 |
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401 if (netif_msg_pktdata(adapter)) |
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402 e1000e_dump_ps_pages(adapter, |
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403 buffer_info); |
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404 } |
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405 } |
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406 break; |
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407 default: |
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408 case 0: |
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409 /* Extended Receive Descriptor (Read) Format |
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410 * |
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411 * +-----------------------------------------------------+ |
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412 * 0 | Buffer Address [63:0] | |
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413 * +-----------------------------------------------------+ |
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414 * 8 | Reserved | |
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415 * +-----------------------------------------------------+ |
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416 */ |
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417 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n"); |
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418 /* Extended Receive Descriptor (Write-Back) Format |
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419 * |
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420 * 63 48 47 32 31 24 23 4 3 0 |
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421 * +------------------------------------------------------+ |
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422 * | RSS Hash | | | | |
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423 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | |
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424 * | Packet | IP | | | Type | |
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425 * | Checksum | Ident | | | | |
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426 * +------------------------------------------------------+ |
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427 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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428 * +------------------------------------------------------+ |
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429 * 63 48 47 32 31 20 19 0 |
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430 */ |
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431 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n"); |
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432 |
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433 for (i = 0; i < rx_ring->count; i++) { |
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434 const char *next_desc; |
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435 |
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436 buffer_info = &rx_ring->buffer_info[i]; |
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437 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
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438 u1 = (struct my_u1 *)rx_desc; |
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439 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
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440 |
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441 if (i == rx_ring->next_to_use) |
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442 next_desc = " NTU"; |
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443 else if (i == rx_ring->next_to_clean) |
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444 next_desc = " NTC"; |
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445 else |
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446 next_desc = ""; |
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447 |
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448 if (staterr & E1000_RXD_STAT_DD) { |
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449 /* Descriptor Done */ |
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450 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n", |
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451 "RWB", i, |
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452 (unsigned long long)le64_to_cpu(u1->a), |
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453 (unsigned long long)le64_to_cpu(u1->b), |
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454 buffer_info->skb, next_desc); |
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455 } else { |
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456 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n", |
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457 "R ", i, |
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458 (unsigned long long)le64_to_cpu(u1->a), |
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459 (unsigned long long)le64_to_cpu(u1->b), |
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460 (unsigned long long)buffer_info->dma, |
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461 buffer_info->skb, next_desc); |
|
462 |
|
463 if (netif_msg_pktdata(adapter) && |
|
464 buffer_info->skb) |
|
465 print_hex_dump(KERN_INFO, "", |
|
466 DUMP_PREFIX_ADDRESS, 16, |
|
467 1, |
|
468 buffer_info->skb->data, |
|
469 adapter->rx_buffer_len, |
|
470 true); |
|
471 } |
|
472 } |
|
473 } |
|
474 } |
|
475 |
|
476 /** |
|
477 * e1000_desc_unused - calculate if we have unused descriptors |
|
478 **/ |
|
479 static int e1000_desc_unused(struct e1000_ring *ring) |
|
480 { |
|
481 if (ring->next_to_clean > ring->next_to_use) |
|
482 return ring->next_to_clean - ring->next_to_use - 1; |
|
483 |
|
484 return ring->count + ring->next_to_clean - ring->next_to_use - 1; |
|
485 } |
|
486 |
|
487 /** |
|
488 * e1000_receive_skb - helper function to handle Rx indications |
|
489 * @adapter: board private structure |
|
490 * @status: descriptor status field as written by hardware |
|
491 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
492 * @skb: pointer to sk_buff to be indicated to stack |
|
493 **/ |
|
494 static void e1000_receive_skb(struct e1000_adapter *adapter, |
|
495 struct net_device *netdev, struct sk_buff *skb, |
|
496 u8 status, __le16 vlan) |
|
497 { |
|
498 u16 tag = le16_to_cpu(vlan); |
|
499 skb->protocol = eth_type_trans(skb, netdev); |
|
500 |
|
501 if (status & E1000_RXD_STAT_VP) |
|
502 __vlan_hwaccel_put_tag(skb, tag); |
|
503 |
|
504 napi_gro_receive(&adapter->napi, skb); |
|
505 } |
|
506 |
|
507 /** |
|
508 * e1000_rx_checksum - Receive Checksum Offload |
|
509 * @adapter: board private structure |
|
510 * @status_err: receive descriptor status and error fields |
|
511 * @csum: receive descriptor csum field |
|
512 * @sk_buff: socket buffer with received data |
|
513 **/ |
|
514 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
515 struct sk_buff *skb) |
|
516 { |
|
517 u16 status = (u16)status_err; |
|
518 u8 errors = (u8)(status_err >> 24); |
|
519 |
|
520 skb_checksum_none_assert(skb); |
|
521 |
|
522 /* Rx checksum disabled */ |
|
523 if (!(adapter->netdev->features & NETIF_F_RXCSUM)) |
|
524 return; |
|
525 |
|
526 /* Ignore Checksum bit is set */ |
|
527 if (status & E1000_RXD_STAT_IXSM) |
|
528 return; |
|
529 |
|
530 /* TCP/UDP checksum error bit or IP checksum error bit is set */ |
|
531 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) { |
|
532 /* let the stack verify checksum errors */ |
|
533 adapter->hw_csum_err++; |
|
534 return; |
|
535 } |
|
536 |
|
537 /* TCP/UDP Checksum has not been calculated */ |
|
538 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
539 return; |
|
540 |
|
541 /* It must be a TCP or UDP packet with a valid checksum */ |
|
542 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
543 adapter->hw_csum_good++; |
|
544 } |
|
545 |
|
546 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i) |
|
547 { |
|
548 struct e1000_adapter *adapter = rx_ring->adapter; |
|
549 struct e1000_hw *hw = &adapter->hw; |
|
550 s32 ret_val = __ew32_prepare(hw); |
|
551 |
|
552 writel(i, rx_ring->tail); |
|
553 |
|
554 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) { |
|
555 u32 rctl = er32(RCTL); |
|
556 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
557 e_err("ME firmware caused invalid RDT - resetting\n"); |
|
558 schedule_work(&adapter->reset_task); |
|
559 } |
|
560 } |
|
561 |
|
562 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i) |
|
563 { |
|
564 struct e1000_adapter *adapter = tx_ring->adapter; |
|
565 struct e1000_hw *hw = &adapter->hw; |
|
566 s32 ret_val = __ew32_prepare(hw); |
|
567 |
|
568 writel(i, tx_ring->tail); |
|
569 |
|
570 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) { |
|
571 u32 tctl = er32(TCTL); |
|
572 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
573 e_err("ME firmware caused invalid TDT - resetting\n"); |
|
574 schedule_work(&adapter->reset_task); |
|
575 } |
|
576 } |
|
577 |
|
578 /** |
|
579 * e1000_alloc_rx_buffers - Replace used receive buffers |
|
580 * @rx_ring: Rx descriptor ring |
|
581 **/ |
|
582 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring, |
|
583 int cleaned_count, gfp_t gfp) |
|
584 { |
|
585 struct e1000_adapter *adapter = rx_ring->adapter; |
|
586 struct net_device *netdev = adapter->netdev; |
|
587 struct pci_dev *pdev = adapter->pdev; |
|
588 union e1000_rx_desc_extended *rx_desc; |
|
589 struct e1000_buffer *buffer_info; |
|
590 struct sk_buff *skb; |
|
591 unsigned int i; |
|
592 unsigned int bufsz = adapter->rx_buffer_len; |
|
593 |
|
594 i = rx_ring->next_to_use; |
|
595 buffer_info = &rx_ring->buffer_info[i]; |
|
596 |
|
597 while (cleaned_count--) { |
|
598 skb = buffer_info->skb; |
|
599 if (skb) { |
|
600 skb_trim(skb, 0); |
|
601 goto map_skb; |
|
602 } |
|
603 |
|
604 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
605 if (!skb) { |
|
606 /* Better luck next round */ |
|
607 adapter->alloc_rx_buff_failed++; |
|
608 break; |
|
609 } |
|
610 |
|
611 buffer_info->skb = skb; |
|
612 map_skb: |
|
613 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
614 adapter->rx_buffer_len, |
|
615 DMA_FROM_DEVICE); |
|
616 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
617 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
618 adapter->rx_dma_failed++; |
|
619 break; |
|
620 } |
|
621 |
|
622 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
623 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
624 |
|
625 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
626 /* |
|
627 * Force memory writes to complete before letting h/w |
|
628 * know there are new descriptors to fetch. (Only |
|
629 * applicable for weak-ordered memory model archs, |
|
630 * such as IA-64). |
|
631 */ |
|
632 wmb(); |
|
633 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
634 e1000e_update_rdt_wa(rx_ring, i); |
|
635 else |
|
636 writel(i, rx_ring->tail); |
|
637 } |
|
638 i++; |
|
639 if (i == rx_ring->count) |
|
640 i = 0; |
|
641 buffer_info = &rx_ring->buffer_info[i]; |
|
642 } |
|
643 |
|
644 rx_ring->next_to_use = i; |
|
645 } |
|
646 |
|
647 /** |
|
648 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
649 * @rx_ring: Rx descriptor ring |
|
650 **/ |
|
651 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring, |
|
652 int cleaned_count, gfp_t gfp) |
|
653 { |
|
654 struct e1000_adapter *adapter = rx_ring->adapter; |
|
655 struct net_device *netdev = adapter->netdev; |
|
656 struct pci_dev *pdev = adapter->pdev; |
|
657 union e1000_rx_desc_packet_split *rx_desc; |
|
658 struct e1000_buffer *buffer_info; |
|
659 struct e1000_ps_page *ps_page; |
|
660 struct sk_buff *skb; |
|
661 unsigned int i, j; |
|
662 |
|
663 i = rx_ring->next_to_use; |
|
664 buffer_info = &rx_ring->buffer_info[i]; |
|
665 |
|
666 while (cleaned_count--) { |
|
667 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
668 |
|
669 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
670 ps_page = &buffer_info->ps_pages[j]; |
|
671 if (j >= adapter->rx_ps_pages) { |
|
672 /* all unused desc entries get hw null ptr */ |
|
673 rx_desc->read.buffer_addr[j + 1] = |
|
674 ~cpu_to_le64(0); |
|
675 continue; |
|
676 } |
|
677 if (!ps_page->page) { |
|
678 ps_page->page = alloc_page(gfp); |
|
679 if (!ps_page->page) { |
|
680 adapter->alloc_rx_buff_failed++; |
|
681 goto no_buffers; |
|
682 } |
|
683 ps_page->dma = dma_map_page(&pdev->dev, |
|
684 ps_page->page, |
|
685 0, PAGE_SIZE, |
|
686 DMA_FROM_DEVICE); |
|
687 if (dma_mapping_error(&pdev->dev, |
|
688 ps_page->dma)) { |
|
689 dev_err(&adapter->pdev->dev, |
|
690 "Rx DMA page map failed\n"); |
|
691 adapter->rx_dma_failed++; |
|
692 goto no_buffers; |
|
693 } |
|
694 } |
|
695 /* |
|
696 * Refresh the desc even if buffer_addrs |
|
697 * didn't change because each write-back |
|
698 * erases this info. |
|
699 */ |
|
700 rx_desc->read.buffer_addr[j + 1] = |
|
701 cpu_to_le64(ps_page->dma); |
|
702 } |
|
703 |
|
704 skb = __netdev_alloc_skb_ip_align(netdev, |
|
705 adapter->rx_ps_bsize0, |
|
706 gfp); |
|
707 |
|
708 if (!skb) { |
|
709 adapter->alloc_rx_buff_failed++; |
|
710 break; |
|
711 } |
|
712 |
|
713 buffer_info->skb = skb; |
|
714 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
715 adapter->rx_ps_bsize0, |
|
716 DMA_FROM_DEVICE); |
|
717 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
718 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
719 adapter->rx_dma_failed++; |
|
720 /* cleanup skb */ |
|
721 dev_kfree_skb_any(skb); |
|
722 buffer_info->skb = NULL; |
|
723 break; |
|
724 } |
|
725 |
|
726 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
727 |
|
728 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
729 /* |
|
730 * Force memory writes to complete before letting h/w |
|
731 * know there are new descriptors to fetch. (Only |
|
732 * applicable for weak-ordered memory model archs, |
|
733 * such as IA-64). |
|
734 */ |
|
735 wmb(); |
|
736 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
737 e1000e_update_rdt_wa(rx_ring, i << 1); |
|
738 else |
|
739 writel(i << 1, rx_ring->tail); |
|
740 } |
|
741 |
|
742 i++; |
|
743 if (i == rx_ring->count) |
|
744 i = 0; |
|
745 buffer_info = &rx_ring->buffer_info[i]; |
|
746 } |
|
747 |
|
748 no_buffers: |
|
749 rx_ring->next_to_use = i; |
|
750 } |
|
751 |
|
752 /** |
|
753 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
754 * @rx_ring: Rx descriptor ring |
|
755 * @cleaned_count: number of buffers to allocate this pass |
|
756 **/ |
|
757 |
|
758 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring, |
|
759 int cleaned_count, gfp_t gfp) |
|
760 { |
|
761 struct e1000_adapter *adapter = rx_ring->adapter; |
|
762 struct net_device *netdev = adapter->netdev; |
|
763 struct pci_dev *pdev = adapter->pdev; |
|
764 union e1000_rx_desc_extended *rx_desc; |
|
765 struct e1000_buffer *buffer_info; |
|
766 struct sk_buff *skb; |
|
767 unsigned int i; |
|
768 unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
|
769 |
|
770 i = rx_ring->next_to_use; |
|
771 buffer_info = &rx_ring->buffer_info[i]; |
|
772 |
|
773 while (cleaned_count--) { |
|
774 skb = buffer_info->skb; |
|
775 if (skb) { |
|
776 skb_trim(skb, 0); |
|
777 goto check_page; |
|
778 } |
|
779 |
|
780 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
781 if (unlikely(!skb)) { |
|
782 /* Better luck next round */ |
|
783 adapter->alloc_rx_buff_failed++; |
|
784 break; |
|
785 } |
|
786 |
|
787 buffer_info->skb = skb; |
|
788 check_page: |
|
789 /* allocate a new page if necessary */ |
|
790 if (!buffer_info->page) { |
|
791 buffer_info->page = alloc_page(gfp); |
|
792 if (unlikely(!buffer_info->page)) { |
|
793 adapter->alloc_rx_buff_failed++; |
|
794 break; |
|
795 } |
|
796 } |
|
797 |
|
798 if (!buffer_info->dma) |
|
799 buffer_info->dma = dma_map_page(&pdev->dev, |
|
800 buffer_info->page, 0, |
|
801 PAGE_SIZE, |
|
802 DMA_FROM_DEVICE); |
|
803 |
|
804 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
805 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
806 |
|
807 if (unlikely(++i == rx_ring->count)) |
|
808 i = 0; |
|
809 buffer_info = &rx_ring->buffer_info[i]; |
|
810 } |
|
811 |
|
812 if (likely(rx_ring->next_to_use != i)) { |
|
813 rx_ring->next_to_use = i; |
|
814 if (unlikely(i-- == 0)) |
|
815 i = (rx_ring->count - 1); |
|
816 |
|
817 /* Force memory writes to complete before letting h/w |
|
818 * know there are new descriptors to fetch. (Only |
|
819 * applicable for weak-ordered memory model archs, |
|
820 * such as IA-64). */ |
|
821 wmb(); |
|
822 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
823 e1000e_update_rdt_wa(rx_ring, i); |
|
824 else |
|
825 writel(i, rx_ring->tail); |
|
826 } |
|
827 } |
|
828 |
|
829 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss, |
|
830 struct sk_buff *skb) |
|
831 { |
|
832 if (netdev->features & NETIF_F_RXHASH) |
|
833 skb->rxhash = le32_to_cpu(rss); |
|
834 } |
|
835 |
|
836 /** |
|
837 * e1000_clean_rx_irq - Send received data up the network stack |
|
838 * @rx_ring: Rx descriptor ring |
|
839 * |
|
840 * the return value indicates whether actual cleaning was done, there |
|
841 * is no guarantee that everything was cleaned |
|
842 **/ |
|
843 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
844 int work_to_do) |
|
845 { |
|
846 struct e1000_adapter *adapter = rx_ring->adapter; |
|
847 struct net_device *netdev = adapter->netdev; |
|
848 struct pci_dev *pdev = adapter->pdev; |
|
849 struct e1000_hw *hw = &adapter->hw; |
|
850 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
851 struct e1000_buffer *buffer_info, *next_buffer; |
|
852 u32 length, staterr; |
|
853 unsigned int i; |
|
854 int cleaned_count = 0; |
|
855 bool cleaned = false; |
|
856 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
857 |
|
858 i = rx_ring->next_to_clean; |
|
859 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
860 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
861 buffer_info = &rx_ring->buffer_info[i]; |
|
862 |
|
863 while (staterr & E1000_RXD_STAT_DD) { |
|
864 struct sk_buff *skb; |
|
865 |
|
866 if (*work_done >= work_to_do) |
|
867 break; |
|
868 (*work_done)++; |
|
869 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
870 |
|
871 skb = buffer_info->skb; |
|
872 buffer_info->skb = NULL; |
|
873 |
|
874 prefetch(skb->data - NET_IP_ALIGN); |
|
875 |
|
876 i++; |
|
877 if (i == rx_ring->count) |
|
878 i = 0; |
|
879 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
880 prefetch(next_rxd); |
|
881 |
|
882 next_buffer = &rx_ring->buffer_info[i]; |
|
883 |
|
884 cleaned = true; |
|
885 cleaned_count++; |
|
886 dma_unmap_single(&pdev->dev, |
|
887 buffer_info->dma, |
|
888 adapter->rx_buffer_len, |
|
889 DMA_FROM_DEVICE); |
|
890 buffer_info->dma = 0; |
|
891 |
|
892 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
893 |
|
894 /* |
|
895 * !EOP means multiple descriptors were used to store a single |
|
896 * packet, if that's the case we need to toss it. In fact, we |
|
897 * need to toss every packet with the EOP bit clear and the |
|
898 * next frame that _does_ have the EOP bit set, as it is by |
|
899 * definition only a frame fragment |
|
900 */ |
|
901 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
|
902 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
903 |
|
904 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
905 /* All receives must fit into a single buffer */ |
|
906 e_dbg("Receive packet consumed multiple buffers\n"); |
|
907 /* recycle */ |
|
908 buffer_info->skb = skb; |
|
909 if (staterr & E1000_RXD_STAT_EOP) |
|
910 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
911 goto next_desc; |
|
912 } |
|
913 |
|
914 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
915 !(netdev->features & NETIF_F_RXALL))) { |
|
916 /* recycle */ |
|
917 buffer_info->skb = skb; |
|
918 goto next_desc; |
|
919 } |
|
920 |
|
921 /* adjust length to remove Ethernet CRC */ |
|
922 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
923 /* If configured to store CRC, don't subtract FCS, |
|
924 * but keep the FCS bytes out of the total_rx_bytes |
|
925 * counter |
|
926 */ |
|
927 if (netdev->features & NETIF_F_RXFCS) |
|
928 total_rx_bytes -= 4; |
|
929 else |
|
930 length -= 4; |
|
931 } |
|
932 |
|
933 total_rx_bytes += length; |
|
934 total_rx_packets++; |
|
935 |
|
936 /* |
|
937 * code added for copybreak, this should improve |
|
938 * performance for small packets with large amounts |
|
939 * of reassembly being done in the stack |
|
940 */ |
|
941 if (length < copybreak) { |
|
942 struct sk_buff *new_skb = |
|
943 netdev_alloc_skb_ip_align(netdev, length); |
|
944 if (new_skb) { |
|
945 skb_copy_to_linear_data_offset(new_skb, |
|
946 -NET_IP_ALIGN, |
|
947 (skb->data - |
|
948 NET_IP_ALIGN), |
|
949 (length + |
|
950 NET_IP_ALIGN)); |
|
951 /* save the skb in buffer_info as good */ |
|
952 buffer_info->skb = skb; |
|
953 skb = new_skb; |
|
954 } |
|
955 /* else just continue with the old one */ |
|
956 } |
|
957 /* end copybreak code */ |
|
958 skb_put(skb, length); |
|
959 |
|
960 /* Receive Checksum Offload */ |
|
961 e1000_rx_checksum(adapter, staterr, skb); |
|
962 |
|
963 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
964 |
|
965 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
966 rx_desc->wb.upper.vlan); |
|
967 |
|
968 next_desc: |
|
969 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
970 |
|
971 /* return some buffers to hardware, one at a time is too slow */ |
|
972 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
973 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
974 GFP_ATOMIC); |
|
975 cleaned_count = 0; |
|
976 } |
|
977 |
|
978 /* use prefetched values */ |
|
979 rx_desc = next_rxd; |
|
980 buffer_info = next_buffer; |
|
981 |
|
982 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
983 } |
|
984 rx_ring->next_to_clean = i; |
|
985 |
|
986 cleaned_count = e1000_desc_unused(rx_ring); |
|
987 if (cleaned_count) |
|
988 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
989 |
|
990 adapter->total_rx_bytes += total_rx_bytes; |
|
991 adapter->total_rx_packets += total_rx_packets; |
|
992 return cleaned; |
|
993 } |
|
994 |
|
995 static void e1000_put_txbuf(struct e1000_ring *tx_ring, |
|
996 struct e1000_buffer *buffer_info) |
|
997 { |
|
998 struct e1000_adapter *adapter = tx_ring->adapter; |
|
999 |
|
1000 if (buffer_info->dma) { |
|
1001 if (buffer_info->mapped_as_page) |
|
1002 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1003 buffer_info->length, DMA_TO_DEVICE); |
|
1004 else |
|
1005 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1006 buffer_info->length, DMA_TO_DEVICE); |
|
1007 buffer_info->dma = 0; |
|
1008 } |
|
1009 if (buffer_info->skb) { |
|
1010 dev_kfree_skb_any(buffer_info->skb); |
|
1011 buffer_info->skb = NULL; |
|
1012 } |
|
1013 buffer_info->time_stamp = 0; |
|
1014 } |
|
1015 |
|
1016 static void e1000_print_hw_hang(struct work_struct *work) |
|
1017 { |
|
1018 struct e1000_adapter *adapter = container_of(work, |
|
1019 struct e1000_adapter, |
|
1020 print_hang_task); |
|
1021 struct net_device *netdev = adapter->netdev; |
|
1022 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1023 unsigned int i = tx_ring->next_to_clean; |
|
1024 unsigned int eop = tx_ring->buffer_info[i].next_to_watch; |
|
1025 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1026 struct e1000_hw *hw = &adapter->hw; |
|
1027 u16 phy_status, phy_1000t_status, phy_ext_status; |
|
1028 u16 pci_status; |
|
1029 |
|
1030 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1031 return; |
|
1032 |
|
1033 if (!adapter->tx_hang_recheck && |
|
1034 (adapter->flags2 & FLAG2_DMA_BURST)) { |
|
1035 /* |
|
1036 * May be block on write-back, flush and detect again |
|
1037 * flush pending descriptor writebacks to memory |
|
1038 */ |
|
1039 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1040 /* execute the writes immediately */ |
|
1041 e1e_flush(); |
|
1042 /* |
|
1043 * Due to rare timing issues, write to TIDV again to ensure |
|
1044 * the write is successful |
|
1045 */ |
|
1046 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1047 /* execute the writes immediately */ |
|
1048 e1e_flush(); |
|
1049 adapter->tx_hang_recheck = true; |
|
1050 return; |
|
1051 } |
|
1052 /* Real hang detected */ |
|
1053 adapter->tx_hang_recheck = false; |
|
1054 netif_stop_queue(netdev); |
|
1055 |
|
1056 e1e_rphy(hw, PHY_STATUS, &phy_status); |
|
1057 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); |
|
1058 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); |
|
1059 |
|
1060 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
|
1061 |
|
1062 /* detected Hardware unit hang */ |
|
1063 e_err("Detected Hardware Unit Hang:\n" |
|
1064 " TDH <%x>\n" |
|
1065 " TDT <%x>\n" |
|
1066 " next_to_use <%x>\n" |
|
1067 " next_to_clean <%x>\n" |
|
1068 "buffer_info[next_to_clean]:\n" |
|
1069 " time_stamp <%lx>\n" |
|
1070 " next_to_watch <%x>\n" |
|
1071 " jiffies <%lx>\n" |
|
1072 " next_to_watch.status <%x>\n" |
|
1073 "MAC Status <%x>\n" |
|
1074 "PHY Status <%x>\n" |
|
1075 "PHY 1000BASE-T Status <%x>\n" |
|
1076 "PHY Extended Status <%x>\n" |
|
1077 "PCI Status <%x>\n", |
|
1078 readl(tx_ring->head), |
|
1079 readl(tx_ring->tail), |
|
1080 tx_ring->next_to_use, |
|
1081 tx_ring->next_to_clean, |
|
1082 tx_ring->buffer_info[eop].time_stamp, |
|
1083 eop, |
|
1084 jiffies, |
|
1085 eop_desc->upper.fields.status, |
|
1086 er32(STATUS), |
|
1087 phy_status, |
|
1088 phy_1000t_status, |
|
1089 phy_ext_status, |
|
1090 pci_status); |
|
1091 |
|
1092 /* Suggest workaround for known h/w issue */ |
|
1093 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE)) |
|
1094 e_err("Try turning off Tx pause (flow control) via ethtool\n"); |
|
1095 } |
|
1096 |
|
1097 /** |
|
1098 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
1099 * @tx_ring: Tx descriptor ring |
|
1100 * |
|
1101 * the return value indicates whether actual cleaning was done, there |
|
1102 * is no guarantee that everything was cleaned |
|
1103 **/ |
|
1104 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) |
|
1105 { |
|
1106 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1107 struct net_device *netdev = adapter->netdev; |
|
1108 struct e1000_hw *hw = &adapter->hw; |
|
1109 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
1110 struct e1000_buffer *buffer_info; |
|
1111 unsigned int i, eop; |
|
1112 unsigned int count = 0; |
|
1113 unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
|
1114 unsigned int bytes_compl = 0, pkts_compl = 0; |
|
1115 |
|
1116 i = tx_ring->next_to_clean; |
|
1117 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1118 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1119 |
|
1120 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
1121 (count < tx_ring->count)) { |
|
1122 bool cleaned = false; |
|
1123 rmb(); /* read buffer_info after eop_desc */ |
|
1124 for (; !cleaned; count++) { |
|
1125 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
1126 buffer_info = &tx_ring->buffer_info[i]; |
|
1127 cleaned = (i == eop); |
|
1128 |
|
1129 if (cleaned) { |
|
1130 total_tx_packets += buffer_info->segs; |
|
1131 total_tx_bytes += buffer_info->bytecount; |
|
1132 if (buffer_info->skb) { |
|
1133 bytes_compl += buffer_info->skb->len; |
|
1134 pkts_compl++; |
|
1135 } |
|
1136 } |
|
1137 |
|
1138 e1000_put_txbuf(tx_ring, buffer_info); |
|
1139 tx_desc->upper.data = 0; |
|
1140 |
|
1141 i++; |
|
1142 if (i == tx_ring->count) |
|
1143 i = 0; |
|
1144 } |
|
1145 |
|
1146 if (i == tx_ring->next_to_use) |
|
1147 break; |
|
1148 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1149 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1150 } |
|
1151 |
|
1152 tx_ring->next_to_clean = i; |
|
1153 |
|
1154 netdev_completed_queue(netdev, pkts_compl, bytes_compl); |
|
1155 |
|
1156 #define TX_WAKE_THRESHOLD 32 |
|
1157 if (count && netif_carrier_ok(netdev) && |
|
1158 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { |
|
1159 /* Make sure that anybody stopping the queue after this |
|
1160 * sees the new next_to_clean. |
|
1161 */ |
|
1162 smp_mb(); |
|
1163 |
|
1164 if (netif_queue_stopped(netdev) && |
|
1165 !(test_bit(__E1000_DOWN, &adapter->state))) { |
|
1166 netif_wake_queue(netdev); |
|
1167 ++adapter->restart_queue; |
|
1168 } |
|
1169 } |
|
1170 |
|
1171 if (adapter->detect_tx_hung) { |
|
1172 /* |
|
1173 * Detect a transmit hang in hardware, this serializes the |
|
1174 * check with the clearing of time_stamp and movement of i |
|
1175 */ |
|
1176 adapter->detect_tx_hung = false; |
|
1177 if (tx_ring->buffer_info[i].time_stamp && |
|
1178 time_after(jiffies, tx_ring->buffer_info[i].time_stamp |
|
1179 + (adapter->tx_timeout_factor * HZ)) && |
|
1180 !(er32(STATUS) & E1000_STATUS_TXOFF)) |
|
1181 schedule_work(&adapter->print_hang_task); |
|
1182 else |
|
1183 adapter->tx_hang_recheck = false; |
|
1184 } |
|
1185 adapter->total_tx_bytes += total_tx_bytes; |
|
1186 adapter->total_tx_packets += total_tx_packets; |
|
1187 return count < tx_ring->count; |
|
1188 } |
|
1189 |
|
1190 /** |
|
1191 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
1192 * @rx_ring: Rx descriptor ring |
|
1193 * |
|
1194 * the return value indicates whether actual cleaning was done, there |
|
1195 * is no guarantee that everything was cleaned |
|
1196 **/ |
|
1197 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, |
|
1198 int work_to_do) |
|
1199 { |
|
1200 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1201 struct e1000_hw *hw = &adapter->hw; |
|
1202 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
1203 struct net_device *netdev = adapter->netdev; |
|
1204 struct pci_dev *pdev = adapter->pdev; |
|
1205 struct e1000_buffer *buffer_info, *next_buffer; |
|
1206 struct e1000_ps_page *ps_page; |
|
1207 struct sk_buff *skb; |
|
1208 unsigned int i, j; |
|
1209 u32 length, staterr; |
|
1210 int cleaned_count = 0; |
|
1211 bool cleaned = false; |
|
1212 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1213 |
|
1214 i = rx_ring->next_to_clean; |
|
1215 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
1216 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1217 buffer_info = &rx_ring->buffer_info[i]; |
|
1218 |
|
1219 while (staterr & E1000_RXD_STAT_DD) { |
|
1220 if (*work_done >= work_to_do) |
|
1221 break; |
|
1222 (*work_done)++; |
|
1223 skb = buffer_info->skb; |
|
1224 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1225 |
|
1226 /* in the packet split case this is header only */ |
|
1227 prefetch(skb->data - NET_IP_ALIGN); |
|
1228 |
|
1229 i++; |
|
1230 if (i == rx_ring->count) |
|
1231 i = 0; |
|
1232 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
1233 prefetch(next_rxd); |
|
1234 |
|
1235 next_buffer = &rx_ring->buffer_info[i]; |
|
1236 |
|
1237 cleaned = true; |
|
1238 cleaned_count++; |
|
1239 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1240 adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
|
1241 buffer_info->dma = 0; |
|
1242 |
|
1243 /* see !EOP comment in other Rx routine */ |
|
1244 if (!(staterr & E1000_RXD_STAT_EOP)) |
|
1245 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
1246 |
|
1247 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
1248 e_dbg("Packet Split buffers didn't pick up the full packet\n"); |
|
1249 dev_kfree_skb_irq(skb); |
|
1250 if (staterr & E1000_RXD_STAT_EOP) |
|
1251 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1252 goto next_desc; |
|
1253 } |
|
1254 |
|
1255 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1256 !(netdev->features & NETIF_F_RXALL))) { |
|
1257 dev_kfree_skb_irq(skb); |
|
1258 goto next_desc; |
|
1259 } |
|
1260 |
|
1261 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
1262 |
|
1263 if (!length) { |
|
1264 e_dbg("Last part of the packet spanning multiple descriptors\n"); |
|
1265 dev_kfree_skb_irq(skb); |
|
1266 goto next_desc; |
|
1267 } |
|
1268 |
|
1269 /* Good Receive */ |
|
1270 skb_put(skb, length); |
|
1271 |
|
1272 { |
|
1273 /* |
|
1274 * this looks ugly, but it seems compiler issues make |
|
1275 * it more efficient than reusing j |
|
1276 */ |
|
1277 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
1278 |
|
1279 /* |
|
1280 * page alloc/put takes too long and effects small |
|
1281 * packet throughput, so unsplit small packets and |
|
1282 * save the alloc/put only valid in softirq (napi) |
|
1283 * context to call kmap_* |
|
1284 */ |
|
1285 if (l1 && (l1 <= copybreak) && |
|
1286 ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
1287 u8 *vaddr; |
|
1288 |
|
1289 ps_page = &buffer_info->ps_pages[0]; |
|
1290 |
|
1291 /* |
|
1292 * there is no documentation about how to call |
|
1293 * kmap_atomic, so we can't hold the mapping |
|
1294 * very long |
|
1295 */ |
|
1296 dma_sync_single_for_cpu(&pdev->dev, |
|
1297 ps_page->dma, |
|
1298 PAGE_SIZE, |
|
1299 DMA_FROM_DEVICE); |
|
1300 vaddr = kmap_atomic(ps_page->page); |
|
1301 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
1302 kunmap_atomic(vaddr); |
|
1303 dma_sync_single_for_device(&pdev->dev, |
|
1304 ps_page->dma, |
|
1305 PAGE_SIZE, |
|
1306 DMA_FROM_DEVICE); |
|
1307 |
|
1308 /* remove the CRC */ |
|
1309 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1310 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1311 l1 -= 4; |
|
1312 } |
|
1313 |
|
1314 skb_put(skb, l1); |
|
1315 goto copydone; |
|
1316 } /* if */ |
|
1317 } |
|
1318 |
|
1319 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1320 length = le16_to_cpu(rx_desc->wb.upper.length[j]); |
|
1321 if (!length) |
|
1322 break; |
|
1323 |
|
1324 ps_page = &buffer_info->ps_pages[j]; |
|
1325 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1326 DMA_FROM_DEVICE); |
|
1327 ps_page->dma = 0; |
|
1328 skb_fill_page_desc(skb, j, ps_page->page, 0, length); |
|
1329 ps_page->page = NULL; |
|
1330 skb->len += length; |
|
1331 skb->data_len += length; |
|
1332 skb->truesize += PAGE_SIZE; |
|
1333 } |
|
1334 |
|
1335 /* strip the ethernet crc, problem is we're using pages now so |
|
1336 * this whole operation can get a little cpu intensive |
|
1337 */ |
|
1338 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1339 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1340 pskb_trim(skb, skb->len - 4); |
|
1341 } |
|
1342 |
|
1343 copydone: |
|
1344 total_rx_bytes += skb->len; |
|
1345 total_rx_packets++; |
|
1346 |
|
1347 e1000_rx_checksum(adapter, staterr, skb); |
|
1348 |
|
1349 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1350 |
|
1351 if (rx_desc->wb.upper.header_status & |
|
1352 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
|
1353 adapter->rx_hdr_split++; |
|
1354 |
|
1355 e1000_receive_skb(adapter, netdev, skb, |
|
1356 staterr, rx_desc->wb.middle.vlan); |
|
1357 |
|
1358 next_desc: |
|
1359 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
1360 buffer_info->skb = NULL; |
|
1361 |
|
1362 /* return some buffers to hardware, one at a time is too slow */ |
|
1363 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1364 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1365 GFP_ATOMIC); |
|
1366 cleaned_count = 0; |
|
1367 } |
|
1368 |
|
1369 /* use prefetched values */ |
|
1370 rx_desc = next_rxd; |
|
1371 buffer_info = next_buffer; |
|
1372 |
|
1373 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1374 } |
|
1375 rx_ring->next_to_clean = i; |
|
1376 |
|
1377 cleaned_count = e1000_desc_unused(rx_ring); |
|
1378 if (cleaned_count) |
|
1379 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1380 |
|
1381 adapter->total_rx_bytes += total_rx_bytes; |
|
1382 adapter->total_rx_packets += total_rx_packets; |
|
1383 return cleaned; |
|
1384 } |
|
1385 |
|
1386 /** |
|
1387 * e1000_consume_page - helper function |
|
1388 **/ |
|
1389 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
1390 u16 length) |
|
1391 { |
|
1392 bi->page = NULL; |
|
1393 skb->len += length; |
|
1394 skb->data_len += length; |
|
1395 skb->truesize += PAGE_SIZE; |
|
1396 } |
|
1397 |
|
1398 /** |
|
1399 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
1400 * @adapter: board private structure |
|
1401 * |
|
1402 * the return value indicates whether actual cleaning was done, there |
|
1403 * is no guarantee that everything was cleaned |
|
1404 **/ |
|
1405 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
1406 int work_to_do) |
|
1407 { |
|
1408 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1409 struct net_device *netdev = adapter->netdev; |
|
1410 struct pci_dev *pdev = adapter->pdev; |
|
1411 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
1412 struct e1000_buffer *buffer_info, *next_buffer; |
|
1413 u32 length, staterr; |
|
1414 unsigned int i; |
|
1415 int cleaned_count = 0; |
|
1416 bool cleaned = false; |
|
1417 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
1418 |
|
1419 i = rx_ring->next_to_clean; |
|
1420 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1421 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1422 buffer_info = &rx_ring->buffer_info[i]; |
|
1423 |
|
1424 while (staterr & E1000_RXD_STAT_DD) { |
|
1425 struct sk_buff *skb; |
|
1426 |
|
1427 if (*work_done >= work_to_do) |
|
1428 break; |
|
1429 (*work_done)++; |
|
1430 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1431 |
|
1432 skb = buffer_info->skb; |
|
1433 buffer_info->skb = NULL; |
|
1434 |
|
1435 ++i; |
|
1436 if (i == rx_ring->count) |
|
1437 i = 0; |
|
1438 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1439 prefetch(next_rxd); |
|
1440 |
|
1441 next_buffer = &rx_ring->buffer_info[i]; |
|
1442 |
|
1443 cleaned = true; |
|
1444 cleaned_count++; |
|
1445 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
|
1446 DMA_FROM_DEVICE); |
|
1447 buffer_info->dma = 0; |
|
1448 |
|
1449 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
1450 |
|
1451 /* errors is only valid for DD + EOP descriptors */ |
|
1452 if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
|
1453 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1454 !(netdev->features & NETIF_F_RXALL)))) { |
|
1455 /* recycle both page and skb */ |
|
1456 buffer_info->skb = skb; |
|
1457 /* an error means any chain goes out the window too */ |
|
1458 if (rx_ring->rx_skb_top) |
|
1459 dev_kfree_skb_irq(rx_ring->rx_skb_top); |
|
1460 rx_ring->rx_skb_top = NULL; |
|
1461 goto next_desc; |
|
1462 } |
|
1463 |
|
1464 #define rxtop (rx_ring->rx_skb_top) |
|
1465 if (!(staterr & E1000_RXD_STAT_EOP)) { |
|
1466 /* this descriptor is only the beginning (or middle) */ |
|
1467 if (!rxtop) { |
|
1468 /* this is the beginning of a chain */ |
|
1469 rxtop = skb; |
|
1470 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
1471 0, length); |
|
1472 } else { |
|
1473 /* this is the middle of a chain */ |
|
1474 skb_fill_page_desc(rxtop, |
|
1475 skb_shinfo(rxtop)->nr_frags, |
|
1476 buffer_info->page, 0, length); |
|
1477 /* re-use the skb, only consumed the page */ |
|
1478 buffer_info->skb = skb; |
|
1479 } |
|
1480 e1000_consume_page(buffer_info, rxtop, length); |
|
1481 goto next_desc; |
|
1482 } else { |
|
1483 if (rxtop) { |
|
1484 /* end of the chain */ |
|
1485 skb_fill_page_desc(rxtop, |
|
1486 skb_shinfo(rxtop)->nr_frags, |
|
1487 buffer_info->page, 0, length); |
|
1488 /* re-use the current skb, we only consumed the |
|
1489 * page */ |
|
1490 buffer_info->skb = skb; |
|
1491 skb = rxtop; |
|
1492 rxtop = NULL; |
|
1493 e1000_consume_page(buffer_info, skb, length); |
|
1494 } else { |
|
1495 /* no chain, got EOP, this buf is the packet |
|
1496 * copybreak to save the put_page/alloc_page */ |
|
1497 if (length <= copybreak && |
|
1498 skb_tailroom(skb) >= length) { |
|
1499 u8 *vaddr; |
|
1500 vaddr = kmap_atomic(buffer_info->page); |
|
1501 memcpy(skb_tail_pointer(skb), vaddr, |
|
1502 length); |
|
1503 kunmap_atomic(vaddr); |
|
1504 /* re-use the page, so don't erase |
|
1505 * buffer_info->page */ |
|
1506 skb_put(skb, length); |
|
1507 } else { |
|
1508 skb_fill_page_desc(skb, 0, |
|
1509 buffer_info->page, 0, |
|
1510 length); |
|
1511 e1000_consume_page(buffer_info, skb, |
|
1512 length); |
|
1513 } |
|
1514 } |
|
1515 } |
|
1516 |
|
1517 /* Receive Checksum Offload */ |
|
1518 e1000_rx_checksum(adapter, staterr, skb); |
|
1519 |
|
1520 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1521 |
|
1522 /* probably a little skewed due to removing CRC */ |
|
1523 total_rx_bytes += skb->len; |
|
1524 total_rx_packets++; |
|
1525 |
|
1526 /* eth type trans needs skb->data to point to something */ |
|
1527 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
1528 e_err("pskb_may_pull failed.\n"); |
|
1529 dev_kfree_skb_irq(skb); |
|
1530 goto next_desc; |
|
1531 } |
|
1532 |
|
1533 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1534 rx_desc->wb.upper.vlan); |
|
1535 |
|
1536 next_desc: |
|
1537 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1538 |
|
1539 /* return some buffers to hardware, one at a time is too slow */ |
|
1540 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
1541 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1542 GFP_ATOMIC); |
|
1543 cleaned_count = 0; |
|
1544 } |
|
1545 |
|
1546 /* use prefetched values */ |
|
1547 rx_desc = next_rxd; |
|
1548 buffer_info = next_buffer; |
|
1549 |
|
1550 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1551 } |
|
1552 rx_ring->next_to_clean = i; |
|
1553 |
|
1554 cleaned_count = e1000_desc_unused(rx_ring); |
|
1555 if (cleaned_count) |
|
1556 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1557 |
|
1558 adapter->total_rx_bytes += total_rx_bytes; |
|
1559 adapter->total_rx_packets += total_rx_packets; |
|
1560 return cleaned; |
|
1561 } |
|
1562 |
|
1563 /** |
|
1564 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1565 * @rx_ring: Rx descriptor ring |
|
1566 **/ |
|
1567 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring) |
|
1568 { |
|
1569 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1570 struct e1000_buffer *buffer_info; |
|
1571 struct e1000_ps_page *ps_page; |
|
1572 struct pci_dev *pdev = adapter->pdev; |
|
1573 unsigned int i, j; |
|
1574 |
|
1575 /* Free all the Rx ring sk_buffs */ |
|
1576 for (i = 0; i < rx_ring->count; i++) { |
|
1577 buffer_info = &rx_ring->buffer_info[i]; |
|
1578 if (buffer_info->dma) { |
|
1579 if (adapter->clean_rx == e1000_clean_rx_irq) |
|
1580 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1581 adapter->rx_buffer_len, |
|
1582 DMA_FROM_DEVICE); |
|
1583 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
|
1584 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
1585 PAGE_SIZE, |
|
1586 DMA_FROM_DEVICE); |
|
1587 else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
|
1588 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1589 adapter->rx_ps_bsize0, |
|
1590 DMA_FROM_DEVICE); |
|
1591 buffer_info->dma = 0; |
|
1592 } |
|
1593 |
|
1594 if (buffer_info->page) { |
|
1595 put_page(buffer_info->page); |
|
1596 buffer_info->page = NULL; |
|
1597 } |
|
1598 |
|
1599 if (buffer_info->skb) { |
|
1600 dev_kfree_skb(buffer_info->skb); |
|
1601 buffer_info->skb = NULL; |
|
1602 } |
|
1603 |
|
1604 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1605 ps_page = &buffer_info->ps_pages[j]; |
|
1606 if (!ps_page->page) |
|
1607 break; |
|
1608 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1609 DMA_FROM_DEVICE); |
|
1610 ps_page->dma = 0; |
|
1611 put_page(ps_page->page); |
|
1612 ps_page->page = NULL; |
|
1613 } |
|
1614 } |
|
1615 |
|
1616 /* there also may be some cached data from a chained receive */ |
|
1617 if (rx_ring->rx_skb_top) { |
|
1618 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1619 rx_ring->rx_skb_top = NULL; |
|
1620 } |
|
1621 |
|
1622 /* Zero out the descriptor ring */ |
|
1623 memset(rx_ring->desc, 0, rx_ring->size); |
|
1624 |
|
1625 rx_ring->next_to_clean = 0; |
|
1626 rx_ring->next_to_use = 0; |
|
1627 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1628 |
|
1629 writel(0, rx_ring->head); |
|
1630 if (rx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
1631 e1000e_update_rdt_wa(rx_ring, 0); |
|
1632 else |
|
1633 writel(0, rx_ring->tail); |
|
1634 } |
|
1635 |
|
1636 static void e1000e_downshift_workaround(struct work_struct *work) |
|
1637 { |
|
1638 struct e1000_adapter *adapter = container_of(work, |
|
1639 struct e1000_adapter, downshift_task); |
|
1640 |
|
1641 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1642 return; |
|
1643 |
|
1644 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
|
1645 } |
|
1646 |
|
1647 /** |
|
1648 * e1000_intr_msi - Interrupt Handler |
|
1649 * @irq: interrupt number |
|
1650 * @data: pointer to a network interface device structure |
|
1651 **/ |
|
1652 static irqreturn_t e1000_intr_msi(int irq, void *data) |
|
1653 { |
|
1654 struct net_device *netdev = data; |
|
1655 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1656 struct e1000_hw *hw = &adapter->hw; |
|
1657 u32 icr = er32(ICR); |
|
1658 |
|
1659 /* |
|
1660 * read ICR disables interrupts using IAM |
|
1661 */ |
|
1662 |
|
1663 if (icr & E1000_ICR_LSC) { |
|
1664 hw->mac.get_link_status = true; |
|
1665 /* |
|
1666 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1667 * disconnect (LSC) before accessing any PHY registers |
|
1668 */ |
|
1669 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1670 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1671 schedule_work(&adapter->downshift_task); |
|
1672 |
|
1673 /* |
|
1674 * 80003ES2LAN workaround-- For packet buffer work-around on |
|
1675 * link down event; disable receives here in the ISR and reset |
|
1676 * adapter in watchdog |
|
1677 */ |
|
1678 if (netif_carrier_ok(netdev) && |
|
1679 adapter->flags & FLAG_RX_NEEDS_RESTART) { |
|
1680 /* disable receives */ |
|
1681 u32 rctl = er32(RCTL); |
|
1682 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1683 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1684 } |
|
1685 /* guard against interrupt when we're going down */ |
|
1686 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1687 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1688 } |
|
1689 |
|
1690 if (napi_schedule_prep(&adapter->napi)) { |
|
1691 adapter->total_tx_bytes = 0; |
|
1692 adapter->total_tx_packets = 0; |
|
1693 adapter->total_rx_bytes = 0; |
|
1694 adapter->total_rx_packets = 0; |
|
1695 __napi_schedule(&adapter->napi); |
|
1696 } |
|
1697 |
|
1698 return IRQ_HANDLED; |
|
1699 } |
|
1700 |
|
1701 /** |
|
1702 * e1000_intr - Interrupt Handler |
|
1703 * @irq: interrupt number |
|
1704 * @data: pointer to a network interface device structure |
|
1705 **/ |
|
1706 static irqreturn_t e1000_intr(int irq, void *data) |
|
1707 { |
|
1708 struct net_device *netdev = data; |
|
1709 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1710 struct e1000_hw *hw = &adapter->hw; |
|
1711 u32 rctl, icr = er32(ICR); |
|
1712 |
|
1713 if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
|
1714 return IRQ_NONE; /* Not our interrupt */ |
|
1715 |
|
1716 /* |
|
1717 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
1718 * not set, then the adapter didn't send an interrupt |
|
1719 */ |
|
1720 if (!(icr & E1000_ICR_INT_ASSERTED)) |
|
1721 return IRQ_NONE; |
|
1722 |
|
1723 /* |
|
1724 * Interrupt Auto-Mask...upon reading ICR, |
|
1725 * interrupts are masked. No need for the |
|
1726 * IMC write |
|
1727 */ |
|
1728 |
|
1729 if (icr & E1000_ICR_LSC) { |
|
1730 hw->mac.get_link_status = true; |
|
1731 /* |
|
1732 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1733 * disconnect (LSC) before accessing any PHY registers |
|
1734 */ |
|
1735 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1736 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1737 schedule_work(&adapter->downshift_task); |
|
1738 |
|
1739 /* |
|
1740 * 80003ES2LAN workaround-- |
|
1741 * For packet buffer work-around on link down event; |
|
1742 * disable receives here in the ISR and |
|
1743 * reset adapter in watchdog |
|
1744 */ |
|
1745 if (netif_carrier_ok(netdev) && |
|
1746 (adapter->flags & FLAG_RX_NEEDS_RESTART)) { |
|
1747 /* disable receives */ |
|
1748 rctl = er32(RCTL); |
|
1749 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1750 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1751 } |
|
1752 /* guard against interrupt when we're going down */ |
|
1753 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1754 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1755 } |
|
1756 |
|
1757 if (napi_schedule_prep(&adapter->napi)) { |
|
1758 adapter->total_tx_bytes = 0; |
|
1759 adapter->total_tx_packets = 0; |
|
1760 adapter->total_rx_bytes = 0; |
|
1761 adapter->total_rx_packets = 0; |
|
1762 __napi_schedule(&adapter->napi); |
|
1763 } |
|
1764 |
|
1765 return IRQ_HANDLED; |
|
1766 } |
|
1767 |
|
1768 static irqreturn_t e1000_msix_other(int irq, void *data) |
|
1769 { |
|
1770 struct net_device *netdev = data; |
|
1771 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1772 struct e1000_hw *hw = &adapter->hw; |
|
1773 u32 icr = er32(ICR); |
|
1774 |
|
1775 if (!(icr & E1000_ICR_INT_ASSERTED)) { |
|
1776 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1777 ew32(IMS, E1000_IMS_OTHER); |
|
1778 return IRQ_NONE; |
|
1779 } |
|
1780 |
|
1781 if (icr & adapter->eiac_mask) |
|
1782 ew32(ICS, (icr & adapter->eiac_mask)); |
|
1783 |
|
1784 if (icr & E1000_ICR_OTHER) { |
|
1785 if (!(icr & E1000_ICR_LSC)) |
|
1786 goto no_link_interrupt; |
|
1787 hw->mac.get_link_status = true; |
|
1788 /* guard against interrupt when we're going down */ |
|
1789 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1790 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1791 } |
|
1792 |
|
1793 no_link_interrupt: |
|
1794 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1795 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); |
|
1796 |
|
1797 return IRQ_HANDLED; |
|
1798 } |
|
1799 |
|
1800 |
|
1801 static irqreturn_t e1000_intr_msix_tx(int irq, void *data) |
|
1802 { |
|
1803 struct net_device *netdev = data; |
|
1804 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1805 struct e1000_hw *hw = &adapter->hw; |
|
1806 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1807 |
|
1808 |
|
1809 adapter->total_tx_bytes = 0; |
|
1810 adapter->total_tx_packets = 0; |
|
1811 |
|
1812 if (!e1000_clean_tx_irq(tx_ring)) |
|
1813 /* Ring was not completely cleaned, so fire another interrupt */ |
|
1814 ew32(ICS, tx_ring->ims_val); |
|
1815 |
|
1816 return IRQ_HANDLED; |
|
1817 } |
|
1818 |
|
1819 static irqreturn_t e1000_intr_msix_rx(int irq, void *data) |
|
1820 { |
|
1821 struct net_device *netdev = data; |
|
1822 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1823 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1824 |
|
1825 /* Write the ITR value calculated at the end of the |
|
1826 * previous interrupt. |
|
1827 */ |
|
1828 if (rx_ring->set_itr) { |
|
1829 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1830 rx_ring->itr_register); |
|
1831 rx_ring->set_itr = 0; |
|
1832 } |
|
1833 |
|
1834 if (napi_schedule_prep(&adapter->napi)) { |
|
1835 adapter->total_rx_bytes = 0; |
|
1836 adapter->total_rx_packets = 0; |
|
1837 __napi_schedule(&adapter->napi); |
|
1838 } |
|
1839 return IRQ_HANDLED; |
|
1840 } |
|
1841 |
|
1842 /** |
|
1843 * e1000_configure_msix - Configure MSI-X hardware |
|
1844 * |
|
1845 * e1000_configure_msix sets up the hardware to properly |
|
1846 * generate MSI-X interrupts. |
|
1847 **/ |
|
1848 static void e1000_configure_msix(struct e1000_adapter *adapter) |
|
1849 { |
|
1850 struct e1000_hw *hw = &adapter->hw; |
|
1851 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1852 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1853 int vector = 0; |
|
1854 u32 ctrl_ext, ivar = 0; |
|
1855 |
|
1856 adapter->eiac_mask = 0; |
|
1857 |
|
1858 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ |
|
1859 if (hw->mac.type == e1000_82574) { |
|
1860 u32 rfctl = er32(RFCTL); |
|
1861 rfctl |= E1000_RFCTL_ACK_DIS; |
|
1862 ew32(RFCTL, rfctl); |
|
1863 } |
|
1864 |
|
1865 #define E1000_IVAR_INT_ALLOC_VALID 0x8 |
|
1866 /* Configure Rx vector */ |
|
1867 rx_ring->ims_val = E1000_IMS_RXQ0; |
|
1868 adapter->eiac_mask |= rx_ring->ims_val; |
|
1869 if (rx_ring->itr_val) |
|
1870 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1871 rx_ring->itr_register); |
|
1872 else |
|
1873 writel(1, rx_ring->itr_register); |
|
1874 ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
|
1875 |
|
1876 /* Configure Tx vector */ |
|
1877 tx_ring->ims_val = E1000_IMS_TXQ0; |
|
1878 vector++; |
|
1879 if (tx_ring->itr_val) |
|
1880 writel(1000000000 / (tx_ring->itr_val * 256), |
|
1881 tx_ring->itr_register); |
|
1882 else |
|
1883 writel(1, tx_ring->itr_register); |
|
1884 adapter->eiac_mask |= tx_ring->ims_val; |
|
1885 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); |
|
1886 |
|
1887 /* set vector for Other Causes, e.g. link changes */ |
|
1888 vector++; |
|
1889 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); |
|
1890 if (rx_ring->itr_val) |
|
1891 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1892 hw->hw_addr + E1000_EITR_82574(vector)); |
|
1893 else |
|
1894 writel(1, hw->hw_addr + E1000_EITR_82574(vector)); |
|
1895 |
|
1896 /* Cause Tx interrupts on every write back */ |
|
1897 ivar |= (1 << 31); |
|
1898 |
|
1899 ew32(IVAR, ivar); |
|
1900 |
|
1901 /* enable MSI-X PBA support */ |
|
1902 ctrl_ext = er32(CTRL_EXT); |
|
1903 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; |
|
1904 |
|
1905 /* Auto-Mask Other interrupts upon ICR read */ |
|
1906 #define E1000_EIAC_MASK_82574 0x01F00000 |
|
1907 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
|
1908 ctrl_ext |= E1000_CTRL_EXT_EIAME; |
|
1909 ew32(CTRL_EXT, ctrl_ext); |
|
1910 e1e_flush(); |
|
1911 } |
|
1912 |
|
1913 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) |
|
1914 { |
|
1915 if (adapter->msix_entries) { |
|
1916 pci_disable_msix(adapter->pdev); |
|
1917 kfree(adapter->msix_entries); |
|
1918 adapter->msix_entries = NULL; |
|
1919 } else if (adapter->flags & FLAG_MSI_ENABLED) { |
|
1920 pci_disable_msi(adapter->pdev); |
|
1921 adapter->flags &= ~FLAG_MSI_ENABLED; |
|
1922 } |
|
1923 } |
|
1924 |
|
1925 /** |
|
1926 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported |
|
1927 * |
|
1928 * Attempt to configure interrupts using the best available |
|
1929 * capabilities of the hardware and kernel. |
|
1930 **/ |
|
1931 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) |
|
1932 { |
|
1933 int err; |
|
1934 int i; |
|
1935 |
|
1936 switch (adapter->int_mode) { |
|
1937 case E1000E_INT_MODE_MSIX: |
|
1938 if (adapter->flags & FLAG_HAS_MSIX) { |
|
1939 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
|
1940 adapter->msix_entries = kcalloc(adapter->num_vectors, |
|
1941 sizeof(struct msix_entry), |
|
1942 GFP_KERNEL); |
|
1943 if (adapter->msix_entries) { |
|
1944 for (i = 0; i < adapter->num_vectors; i++) |
|
1945 adapter->msix_entries[i].entry = i; |
|
1946 |
|
1947 err = pci_enable_msix(adapter->pdev, |
|
1948 adapter->msix_entries, |
|
1949 adapter->num_vectors); |
|
1950 if (err == 0) |
|
1951 return; |
|
1952 } |
|
1953 /* MSI-X failed, so fall through and try MSI */ |
|
1954 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n"); |
|
1955 e1000e_reset_interrupt_capability(adapter); |
|
1956 } |
|
1957 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
1958 /* Fall through */ |
|
1959 case E1000E_INT_MODE_MSI: |
|
1960 if (!pci_enable_msi(adapter->pdev)) { |
|
1961 adapter->flags |= FLAG_MSI_ENABLED; |
|
1962 } else { |
|
1963 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
1964 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n"); |
|
1965 } |
|
1966 /* Fall through */ |
|
1967 case E1000E_INT_MODE_LEGACY: |
|
1968 /* Don't do anything; this is the system default */ |
|
1969 break; |
|
1970 } |
|
1971 |
|
1972 /* store the number of vectors being used */ |
|
1973 adapter->num_vectors = 1; |
|
1974 } |
|
1975 |
|
1976 /** |
|
1977 * e1000_request_msix - Initialize MSI-X interrupts |
|
1978 * |
|
1979 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the |
|
1980 * kernel. |
|
1981 **/ |
|
1982 static int e1000_request_msix(struct e1000_adapter *adapter) |
|
1983 { |
|
1984 struct net_device *netdev = adapter->netdev; |
|
1985 int err = 0, vector = 0; |
|
1986 |
|
1987 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
1988 snprintf(adapter->rx_ring->name, |
|
1989 sizeof(adapter->rx_ring->name) - 1, |
|
1990 "%s-rx-0", netdev->name); |
|
1991 else |
|
1992 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); |
|
1993 err = request_irq(adapter->msix_entries[vector].vector, |
|
1994 e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
|
1995 netdev); |
|
1996 if (err) |
|
1997 return err; |
|
1998 adapter->rx_ring->itr_register = adapter->hw.hw_addr + |
|
1999 E1000_EITR_82574(vector); |
|
2000 adapter->rx_ring->itr_val = adapter->itr; |
|
2001 vector++; |
|
2002 |
|
2003 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2004 snprintf(adapter->tx_ring->name, |
|
2005 sizeof(adapter->tx_ring->name) - 1, |
|
2006 "%s-tx-0", netdev->name); |
|
2007 else |
|
2008 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); |
|
2009 err = request_irq(adapter->msix_entries[vector].vector, |
|
2010 e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
|
2011 netdev); |
|
2012 if (err) |
|
2013 return err; |
|
2014 adapter->tx_ring->itr_register = adapter->hw.hw_addr + |
|
2015 E1000_EITR_82574(vector); |
|
2016 adapter->tx_ring->itr_val = adapter->itr; |
|
2017 vector++; |
|
2018 |
|
2019 err = request_irq(adapter->msix_entries[vector].vector, |
|
2020 e1000_msix_other, 0, netdev->name, netdev); |
|
2021 if (err) |
|
2022 return err; |
|
2023 |
|
2024 e1000_configure_msix(adapter); |
|
2025 |
|
2026 return 0; |
|
2027 } |
|
2028 |
|
2029 /** |
|
2030 * e1000_request_irq - initialize interrupts |
|
2031 * |
|
2032 * Attempts to configure interrupts using the best available |
|
2033 * capabilities of the hardware and kernel. |
|
2034 **/ |
|
2035 static int e1000_request_irq(struct e1000_adapter *adapter) |
|
2036 { |
|
2037 struct net_device *netdev = adapter->netdev; |
|
2038 int err; |
|
2039 |
|
2040 if (adapter->msix_entries) { |
|
2041 err = e1000_request_msix(adapter); |
|
2042 if (!err) |
|
2043 return err; |
|
2044 /* fall back to MSI */ |
|
2045 e1000e_reset_interrupt_capability(adapter); |
|
2046 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2047 e1000e_set_interrupt_capability(adapter); |
|
2048 } |
|
2049 if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2050 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
|
2051 netdev->name, netdev); |
|
2052 if (!err) |
|
2053 return err; |
|
2054 |
|
2055 /* fall back to legacy interrupt */ |
|
2056 e1000e_reset_interrupt_capability(adapter); |
|
2057 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2058 } |
|
2059 |
|
2060 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
|
2061 netdev->name, netdev); |
|
2062 if (err) |
|
2063 e_err("Unable to allocate interrupt, Error: %d\n", err); |
|
2064 |
|
2065 return err; |
|
2066 } |
|
2067 |
|
2068 static void e1000_free_irq(struct e1000_adapter *adapter) |
|
2069 { |
|
2070 struct net_device *netdev = adapter->netdev; |
|
2071 |
|
2072 if (adapter->msix_entries) { |
|
2073 int vector = 0; |
|
2074 |
|
2075 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2076 vector++; |
|
2077 |
|
2078 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2079 vector++; |
|
2080 |
|
2081 /* Other Causes interrupt vector */ |
|
2082 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2083 return; |
|
2084 } |
|
2085 |
|
2086 free_irq(adapter->pdev->irq, netdev); |
|
2087 } |
|
2088 |
|
2089 /** |
|
2090 * e1000_irq_disable - Mask off interrupt generation on the NIC |
|
2091 **/ |
|
2092 static void e1000_irq_disable(struct e1000_adapter *adapter) |
|
2093 { |
|
2094 struct e1000_hw *hw = &adapter->hw; |
|
2095 |
|
2096 ew32(IMC, ~0); |
|
2097 if (adapter->msix_entries) |
|
2098 ew32(EIAC_82574, 0); |
|
2099 e1e_flush(); |
|
2100 |
|
2101 if (adapter->msix_entries) { |
|
2102 int i; |
|
2103 for (i = 0; i < adapter->num_vectors; i++) |
|
2104 synchronize_irq(adapter->msix_entries[i].vector); |
|
2105 } else { |
|
2106 synchronize_irq(adapter->pdev->irq); |
|
2107 } |
|
2108 } |
|
2109 |
|
2110 /** |
|
2111 * e1000_irq_enable - Enable default interrupt generation settings |
|
2112 **/ |
|
2113 static void e1000_irq_enable(struct e1000_adapter *adapter) |
|
2114 { |
|
2115 struct e1000_hw *hw = &adapter->hw; |
|
2116 |
|
2117 if (adapter->msix_entries) { |
|
2118 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); |
|
2119 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); |
|
2120 } else { |
|
2121 ew32(IMS, IMS_ENABLE_MASK); |
|
2122 } |
|
2123 e1e_flush(); |
|
2124 } |
|
2125 |
|
2126 /** |
|
2127 * e1000e_get_hw_control - get control of the h/w from f/w |
|
2128 * @adapter: address of board private structure |
|
2129 * |
|
2130 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2131 * For ASF and Pass Through versions of f/w this means that |
|
2132 * the driver is loaded. For AMT version (only with 82573) |
|
2133 * of the f/w this means that the network i/f is open. |
|
2134 **/ |
|
2135 void e1000e_get_hw_control(struct e1000_adapter *adapter) |
|
2136 { |
|
2137 struct e1000_hw *hw = &adapter->hw; |
|
2138 u32 ctrl_ext; |
|
2139 u32 swsm; |
|
2140 |
|
2141 /* Let firmware know the driver has taken over */ |
|
2142 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2143 swsm = er32(SWSM); |
|
2144 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
|
2145 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2146 ctrl_ext = er32(CTRL_EXT); |
|
2147 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
2148 } |
|
2149 } |
|
2150 |
|
2151 /** |
|
2152 * e1000e_release_hw_control - release control of the h/w to f/w |
|
2153 * @adapter: address of board private structure |
|
2154 * |
|
2155 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2156 * For ASF and Pass Through versions of f/w this means that the |
|
2157 * driver is no longer loaded. For AMT version (only with 82573) i |
|
2158 * of the f/w this means that the network i/f is closed. |
|
2159 * |
|
2160 **/ |
|
2161 void e1000e_release_hw_control(struct e1000_adapter *adapter) |
|
2162 { |
|
2163 struct e1000_hw *hw = &adapter->hw; |
|
2164 u32 ctrl_ext; |
|
2165 u32 swsm; |
|
2166 |
|
2167 /* Let firmware taken over control of h/w */ |
|
2168 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2169 swsm = er32(SWSM); |
|
2170 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
|
2171 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2172 ctrl_ext = er32(CTRL_EXT); |
|
2173 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
|
2174 } |
|
2175 } |
|
2176 |
|
2177 /** |
|
2178 * e1000_alloc_ring_dma - allocate memory for a ring structure |
|
2179 **/ |
|
2180 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, |
|
2181 struct e1000_ring *ring) |
|
2182 { |
|
2183 struct pci_dev *pdev = adapter->pdev; |
|
2184 |
|
2185 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, |
|
2186 GFP_KERNEL); |
|
2187 if (!ring->desc) |
|
2188 return -ENOMEM; |
|
2189 |
|
2190 return 0; |
|
2191 } |
|
2192 |
|
2193 /** |
|
2194 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) |
|
2195 * @tx_ring: Tx descriptor ring |
|
2196 * |
|
2197 * Return 0 on success, negative on failure |
|
2198 **/ |
|
2199 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring) |
|
2200 { |
|
2201 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2202 int err = -ENOMEM, size; |
|
2203 |
|
2204 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2205 tx_ring->buffer_info = vzalloc(size); |
|
2206 if (!tx_ring->buffer_info) |
|
2207 goto err; |
|
2208 |
|
2209 /* round up to nearest 4K */ |
|
2210 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2211 tx_ring->size = ALIGN(tx_ring->size, 4096); |
|
2212 |
|
2213 err = e1000_alloc_ring_dma(adapter, tx_ring); |
|
2214 if (err) |
|
2215 goto err; |
|
2216 |
|
2217 tx_ring->next_to_use = 0; |
|
2218 tx_ring->next_to_clean = 0; |
|
2219 |
|
2220 return 0; |
|
2221 err: |
|
2222 vfree(tx_ring->buffer_info); |
|
2223 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2224 return err; |
|
2225 } |
|
2226 |
|
2227 /** |
|
2228 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) |
|
2229 * @rx_ring: Rx descriptor ring |
|
2230 * |
|
2231 * Returns 0 on success, negative on failure |
|
2232 **/ |
|
2233 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring) |
|
2234 { |
|
2235 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2236 struct e1000_buffer *buffer_info; |
|
2237 int i, size, desc_len, err = -ENOMEM; |
|
2238 |
|
2239 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2240 rx_ring->buffer_info = vzalloc(size); |
|
2241 if (!rx_ring->buffer_info) |
|
2242 goto err; |
|
2243 |
|
2244 for (i = 0; i < rx_ring->count; i++) { |
|
2245 buffer_info = &rx_ring->buffer_info[i]; |
|
2246 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, |
|
2247 sizeof(struct e1000_ps_page), |
|
2248 GFP_KERNEL); |
|
2249 if (!buffer_info->ps_pages) |
|
2250 goto err_pages; |
|
2251 } |
|
2252 |
|
2253 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
2254 |
|
2255 /* Round up to nearest 4K */ |
|
2256 rx_ring->size = rx_ring->count * desc_len; |
|
2257 rx_ring->size = ALIGN(rx_ring->size, 4096); |
|
2258 |
|
2259 err = e1000_alloc_ring_dma(adapter, rx_ring); |
|
2260 if (err) |
|
2261 goto err_pages; |
|
2262 |
|
2263 rx_ring->next_to_clean = 0; |
|
2264 rx_ring->next_to_use = 0; |
|
2265 rx_ring->rx_skb_top = NULL; |
|
2266 |
|
2267 return 0; |
|
2268 |
|
2269 err_pages: |
|
2270 for (i = 0; i < rx_ring->count; i++) { |
|
2271 buffer_info = &rx_ring->buffer_info[i]; |
|
2272 kfree(buffer_info->ps_pages); |
|
2273 } |
|
2274 err: |
|
2275 vfree(rx_ring->buffer_info); |
|
2276 e_err("Unable to allocate memory for the receive descriptor ring\n"); |
|
2277 return err; |
|
2278 } |
|
2279 |
|
2280 /** |
|
2281 * e1000_clean_tx_ring - Free Tx Buffers |
|
2282 * @tx_ring: Tx descriptor ring |
|
2283 **/ |
|
2284 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring) |
|
2285 { |
|
2286 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2287 struct e1000_buffer *buffer_info; |
|
2288 unsigned long size; |
|
2289 unsigned int i; |
|
2290 |
|
2291 for (i = 0; i < tx_ring->count; i++) { |
|
2292 buffer_info = &tx_ring->buffer_info[i]; |
|
2293 e1000_put_txbuf(tx_ring, buffer_info); |
|
2294 } |
|
2295 |
|
2296 netdev_reset_queue(adapter->netdev); |
|
2297 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2298 memset(tx_ring->buffer_info, 0, size); |
|
2299 |
|
2300 memset(tx_ring->desc, 0, tx_ring->size); |
|
2301 |
|
2302 tx_ring->next_to_use = 0; |
|
2303 tx_ring->next_to_clean = 0; |
|
2304 |
|
2305 writel(0, tx_ring->head); |
|
2306 if (tx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
2307 e1000e_update_tdt_wa(tx_ring, 0); |
|
2308 else |
|
2309 writel(0, tx_ring->tail); |
|
2310 } |
|
2311 |
|
2312 /** |
|
2313 * e1000e_free_tx_resources - Free Tx Resources per Queue |
|
2314 * @tx_ring: Tx descriptor ring |
|
2315 * |
|
2316 * Free all transmit software resources |
|
2317 **/ |
|
2318 void e1000e_free_tx_resources(struct e1000_ring *tx_ring) |
|
2319 { |
|
2320 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2321 struct pci_dev *pdev = adapter->pdev; |
|
2322 |
|
2323 e1000_clean_tx_ring(tx_ring); |
|
2324 |
|
2325 vfree(tx_ring->buffer_info); |
|
2326 tx_ring->buffer_info = NULL; |
|
2327 |
|
2328 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
2329 tx_ring->dma); |
|
2330 tx_ring->desc = NULL; |
|
2331 } |
|
2332 |
|
2333 /** |
|
2334 * e1000e_free_rx_resources - Free Rx Resources |
|
2335 * @rx_ring: Rx descriptor ring |
|
2336 * |
|
2337 * Free all receive software resources |
|
2338 **/ |
|
2339 void e1000e_free_rx_resources(struct e1000_ring *rx_ring) |
|
2340 { |
|
2341 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2342 struct pci_dev *pdev = adapter->pdev; |
|
2343 int i; |
|
2344 |
|
2345 e1000_clean_rx_ring(rx_ring); |
|
2346 |
|
2347 for (i = 0; i < rx_ring->count; i++) |
|
2348 kfree(rx_ring->buffer_info[i].ps_pages); |
|
2349 |
|
2350 vfree(rx_ring->buffer_info); |
|
2351 rx_ring->buffer_info = NULL; |
|
2352 |
|
2353 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2354 rx_ring->dma); |
|
2355 rx_ring->desc = NULL; |
|
2356 } |
|
2357 |
|
2358 /** |
|
2359 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2360 * @adapter: pointer to adapter |
|
2361 * @itr_setting: current adapter->itr |
|
2362 * @packets: the number of packets during this measurement interval |
|
2363 * @bytes: the number of bytes during this measurement interval |
|
2364 * |
|
2365 * Stores a new ITR value based on packets and byte |
|
2366 * counts during the last interrupt. The advantage of per interrupt |
|
2367 * computation is faster updates and more accurate ITR for the current |
|
2368 * traffic pattern. Constants in this function were computed |
|
2369 * based on theoretical maximum wire speed and thresholds were set based |
|
2370 * on testing data as well as attempting to minimize response time |
|
2371 * while increasing bulk throughput. This functionality is controlled |
|
2372 * by the InterruptThrottleRate module parameter. |
|
2373 **/ |
|
2374 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2375 u16 itr_setting, int packets, |
|
2376 int bytes) |
|
2377 { |
|
2378 unsigned int retval = itr_setting; |
|
2379 |
|
2380 if (packets == 0) |
|
2381 return itr_setting; |
|
2382 |
|
2383 switch (itr_setting) { |
|
2384 case lowest_latency: |
|
2385 /* handle TSO and jumbo frames */ |
|
2386 if (bytes/packets > 8000) |
|
2387 retval = bulk_latency; |
|
2388 else if ((packets < 5) && (bytes > 512)) |
|
2389 retval = low_latency; |
|
2390 break; |
|
2391 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2392 if (bytes > 10000) { |
|
2393 /* this if handles the TSO accounting */ |
|
2394 if (bytes/packets > 8000) |
|
2395 retval = bulk_latency; |
|
2396 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2397 retval = bulk_latency; |
|
2398 else if ((packets > 35)) |
|
2399 retval = lowest_latency; |
|
2400 } else if (bytes/packets > 2000) { |
|
2401 retval = bulk_latency; |
|
2402 } else if (packets <= 2 && bytes < 512) { |
|
2403 retval = lowest_latency; |
|
2404 } |
|
2405 break; |
|
2406 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2407 if (bytes > 25000) { |
|
2408 if (packets > 35) |
|
2409 retval = low_latency; |
|
2410 } else if (bytes < 6000) { |
|
2411 retval = low_latency; |
|
2412 } |
|
2413 break; |
|
2414 } |
|
2415 |
|
2416 return retval; |
|
2417 } |
|
2418 |
|
2419 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2420 { |
|
2421 struct e1000_hw *hw = &adapter->hw; |
|
2422 u16 current_itr; |
|
2423 u32 new_itr = adapter->itr; |
|
2424 |
|
2425 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2426 if (adapter->link_speed != SPEED_1000) { |
|
2427 current_itr = 0; |
|
2428 new_itr = 4000; |
|
2429 goto set_itr_now; |
|
2430 } |
|
2431 |
|
2432 if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
2433 new_itr = 0; |
|
2434 goto set_itr_now; |
|
2435 } |
|
2436 |
|
2437 adapter->tx_itr = e1000_update_itr(adapter, |
|
2438 adapter->tx_itr, |
|
2439 adapter->total_tx_packets, |
|
2440 adapter->total_tx_bytes); |
|
2441 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2442 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2443 adapter->tx_itr = low_latency; |
|
2444 |
|
2445 adapter->rx_itr = e1000_update_itr(adapter, |
|
2446 adapter->rx_itr, |
|
2447 adapter->total_rx_packets, |
|
2448 adapter->total_rx_bytes); |
|
2449 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2450 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2451 adapter->rx_itr = low_latency; |
|
2452 |
|
2453 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2454 |
|
2455 switch (current_itr) { |
|
2456 /* counts and packets in update_itr are dependent on these numbers */ |
|
2457 case lowest_latency: |
|
2458 new_itr = 70000; |
|
2459 break; |
|
2460 case low_latency: |
|
2461 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2462 break; |
|
2463 case bulk_latency: |
|
2464 new_itr = 4000; |
|
2465 break; |
|
2466 default: |
|
2467 break; |
|
2468 } |
|
2469 |
|
2470 set_itr_now: |
|
2471 if (new_itr != adapter->itr) { |
|
2472 /* |
|
2473 * this attempts to bias the interrupt rate towards Bulk |
|
2474 * by adding intermediate steps when interrupt rate is |
|
2475 * increasing |
|
2476 */ |
|
2477 new_itr = new_itr > adapter->itr ? |
|
2478 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2479 new_itr; |
|
2480 adapter->itr = new_itr; |
|
2481 adapter->rx_ring->itr_val = new_itr; |
|
2482 if (adapter->msix_entries) |
|
2483 adapter->rx_ring->set_itr = 1; |
|
2484 else |
|
2485 if (new_itr) |
|
2486 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2487 else |
|
2488 ew32(ITR, 0); |
|
2489 } |
|
2490 } |
|
2491 |
|
2492 /** |
|
2493 * e1000e_write_itr - write the ITR value to the appropriate registers |
|
2494 * @adapter: address of board private structure |
|
2495 * @itr: new ITR value to program |
|
2496 * |
|
2497 * e1000e_write_itr determines if the adapter is in MSI-X mode |
|
2498 * and, if so, writes the EITR registers with the ITR value. |
|
2499 * Otherwise, it writes the ITR value into the ITR register. |
|
2500 **/ |
|
2501 void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr) |
|
2502 { |
|
2503 struct e1000_hw *hw = &adapter->hw; |
|
2504 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0; |
|
2505 |
|
2506 if (adapter->msix_entries) { |
|
2507 int vector; |
|
2508 |
|
2509 for (vector = 0; vector < adapter->num_vectors; vector++) |
|
2510 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector)); |
|
2511 } else { |
|
2512 ew32(ITR, new_itr); |
|
2513 } |
|
2514 } |
|
2515 |
|
2516 /** |
|
2517 * e1000_alloc_queues - Allocate memory for all rings |
|
2518 * @adapter: board private structure to initialize |
|
2519 **/ |
|
2520 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
2521 { |
|
2522 int size = sizeof(struct e1000_ring); |
|
2523 |
|
2524 adapter->tx_ring = kzalloc(size, GFP_KERNEL); |
|
2525 if (!adapter->tx_ring) |
|
2526 goto err; |
|
2527 adapter->tx_ring->count = adapter->tx_ring_count; |
|
2528 adapter->tx_ring->adapter = adapter; |
|
2529 |
|
2530 adapter->rx_ring = kzalloc(size, GFP_KERNEL); |
|
2531 if (!adapter->rx_ring) |
|
2532 goto err; |
|
2533 adapter->rx_ring->count = adapter->rx_ring_count; |
|
2534 adapter->rx_ring->adapter = adapter; |
|
2535 |
|
2536 return 0; |
|
2537 err: |
|
2538 e_err("Unable to allocate memory for queues\n"); |
|
2539 kfree(adapter->rx_ring); |
|
2540 kfree(adapter->tx_ring); |
|
2541 return -ENOMEM; |
|
2542 } |
|
2543 |
|
2544 /** |
|
2545 * e1000e_poll - NAPI Rx polling callback |
|
2546 * @napi: struct associated with this polling callback |
|
2547 * @weight: number of packets driver is allowed to process this poll |
|
2548 **/ |
|
2549 static int e1000e_poll(struct napi_struct *napi, int weight) |
|
2550 { |
|
2551 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, |
|
2552 napi); |
|
2553 struct e1000_hw *hw = &adapter->hw; |
|
2554 struct net_device *poll_dev = adapter->netdev; |
|
2555 int tx_cleaned = 1, work_done = 0; |
|
2556 |
|
2557 adapter = netdev_priv(poll_dev); |
|
2558 |
|
2559 if (!adapter->msix_entries || |
|
2560 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) |
|
2561 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring); |
|
2562 |
|
2563 adapter->clean_rx(adapter->rx_ring, &work_done, weight); |
|
2564 |
|
2565 if (!tx_cleaned) |
|
2566 work_done = weight; |
|
2567 |
|
2568 /* If weight not fully consumed, exit the polling mode */ |
|
2569 if (work_done < weight) { |
|
2570 if (adapter->itr_setting & 3) |
|
2571 e1000_set_itr(adapter); |
|
2572 napi_complete(napi); |
|
2573 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
2574 if (adapter->msix_entries) |
|
2575 ew32(IMS, adapter->rx_ring->ims_val); |
|
2576 else |
|
2577 e1000_irq_enable(adapter); |
|
2578 } |
|
2579 } |
|
2580 |
|
2581 return work_done; |
|
2582 } |
|
2583 |
|
2584 static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
2585 { |
|
2586 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2587 struct e1000_hw *hw = &adapter->hw; |
|
2588 u32 vfta, index; |
|
2589 |
|
2590 /* don't update vlan cookie if already programmed */ |
|
2591 if ((adapter->hw.mng_cookie.status & |
|
2592 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2593 (vid == adapter->mng_vlan_id)) |
|
2594 return 0; |
|
2595 |
|
2596 /* add VID to filter table */ |
|
2597 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2598 index = (vid >> 5) & 0x7F; |
|
2599 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2600 vfta |= (1 << (vid & 0x1F)); |
|
2601 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2602 } |
|
2603 |
|
2604 set_bit(vid, adapter->active_vlans); |
|
2605 |
|
2606 return 0; |
|
2607 } |
|
2608 |
|
2609 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
2610 { |
|
2611 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2612 struct e1000_hw *hw = &adapter->hw; |
|
2613 u32 vfta, index; |
|
2614 |
|
2615 if ((adapter->hw.mng_cookie.status & |
|
2616 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2617 (vid == adapter->mng_vlan_id)) { |
|
2618 /* release control to f/w */ |
|
2619 e1000e_release_hw_control(adapter); |
|
2620 return 0; |
|
2621 } |
|
2622 |
|
2623 /* remove VID from filter table */ |
|
2624 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2625 index = (vid >> 5) & 0x7F; |
|
2626 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2627 vfta &= ~(1 << (vid & 0x1F)); |
|
2628 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2629 } |
|
2630 |
|
2631 clear_bit(vid, adapter->active_vlans); |
|
2632 |
|
2633 return 0; |
|
2634 } |
|
2635 |
|
2636 /** |
|
2637 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering |
|
2638 * @adapter: board private structure to initialize |
|
2639 **/ |
|
2640 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) |
|
2641 { |
|
2642 struct net_device *netdev = adapter->netdev; |
|
2643 struct e1000_hw *hw = &adapter->hw; |
|
2644 u32 rctl; |
|
2645 |
|
2646 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2647 /* disable VLAN receive filtering */ |
|
2648 rctl = er32(RCTL); |
|
2649 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); |
|
2650 ew32(RCTL, rctl); |
|
2651 |
|
2652 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
2653 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
2654 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2655 } |
|
2656 } |
|
2657 } |
|
2658 |
|
2659 /** |
|
2660 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering |
|
2661 * @adapter: board private structure to initialize |
|
2662 **/ |
|
2663 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) |
|
2664 { |
|
2665 struct e1000_hw *hw = &adapter->hw; |
|
2666 u32 rctl; |
|
2667 |
|
2668 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2669 /* enable VLAN receive filtering */ |
|
2670 rctl = er32(RCTL); |
|
2671 rctl |= E1000_RCTL_VFE; |
|
2672 rctl &= ~E1000_RCTL_CFIEN; |
|
2673 ew32(RCTL, rctl); |
|
2674 } |
|
2675 } |
|
2676 |
|
2677 /** |
|
2678 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping |
|
2679 * @adapter: board private structure to initialize |
|
2680 **/ |
|
2681 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) |
|
2682 { |
|
2683 struct e1000_hw *hw = &adapter->hw; |
|
2684 u32 ctrl; |
|
2685 |
|
2686 /* disable VLAN tag insert/strip */ |
|
2687 ctrl = er32(CTRL); |
|
2688 ctrl &= ~E1000_CTRL_VME; |
|
2689 ew32(CTRL, ctrl); |
|
2690 } |
|
2691 |
|
2692 /** |
|
2693 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping |
|
2694 * @adapter: board private structure to initialize |
|
2695 **/ |
|
2696 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) |
|
2697 { |
|
2698 struct e1000_hw *hw = &adapter->hw; |
|
2699 u32 ctrl; |
|
2700 |
|
2701 /* enable VLAN tag insert/strip */ |
|
2702 ctrl = er32(CTRL); |
|
2703 ctrl |= E1000_CTRL_VME; |
|
2704 ew32(CTRL, ctrl); |
|
2705 } |
|
2706 |
|
2707 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
|
2708 { |
|
2709 struct net_device *netdev = adapter->netdev; |
|
2710 u16 vid = adapter->hw.mng_cookie.vlan_id; |
|
2711 u16 old_vid = adapter->mng_vlan_id; |
|
2712 |
|
2713 if (adapter->hw.mng_cookie.status & |
|
2714 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
|
2715 e1000_vlan_rx_add_vid(netdev, vid); |
|
2716 adapter->mng_vlan_id = vid; |
|
2717 } |
|
2718 |
|
2719 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
|
2720 e1000_vlan_rx_kill_vid(netdev, old_vid); |
|
2721 } |
|
2722 |
|
2723 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
2724 { |
|
2725 u16 vid; |
|
2726 |
|
2727 e1000_vlan_rx_add_vid(adapter->netdev, 0); |
|
2728 |
|
2729 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
|
2730 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
2731 } |
|
2732 |
|
2733 static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
|
2734 { |
|
2735 struct e1000_hw *hw = &adapter->hw; |
|
2736 u32 manc, manc2h, mdef, i, j; |
|
2737 |
|
2738 if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) |
|
2739 return; |
|
2740 |
|
2741 manc = er32(MANC); |
|
2742 |
|
2743 /* |
|
2744 * enable receiving management packets to the host. this will probably |
|
2745 * generate destination unreachable messages from the host OS, but |
|
2746 * the packets will be handled on SMBUS |
|
2747 */ |
|
2748 manc |= E1000_MANC_EN_MNG2HOST; |
|
2749 manc2h = er32(MANC2H); |
|
2750 |
|
2751 switch (hw->mac.type) { |
|
2752 default: |
|
2753 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); |
|
2754 break; |
|
2755 case e1000_82574: |
|
2756 case e1000_82583: |
|
2757 /* |
|
2758 * Check if IPMI pass-through decision filter already exists; |
|
2759 * if so, enable it. |
|
2760 */ |
|
2761 for (i = 0, j = 0; i < 8; i++) { |
|
2762 mdef = er32(MDEF(i)); |
|
2763 |
|
2764 /* Ignore filters with anything other than IPMI ports */ |
|
2765 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2766 continue; |
|
2767 |
|
2768 /* Enable this decision filter in MANC2H */ |
|
2769 if (mdef) |
|
2770 manc2h |= (1 << i); |
|
2771 |
|
2772 j |= mdef; |
|
2773 } |
|
2774 |
|
2775 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2776 break; |
|
2777 |
|
2778 /* Create new decision filter in an empty filter */ |
|
2779 for (i = 0, j = 0; i < 8; i++) |
|
2780 if (er32(MDEF(i)) == 0) { |
|
2781 ew32(MDEF(i), (E1000_MDEF_PORT_623 | |
|
2782 E1000_MDEF_PORT_664)); |
|
2783 manc2h |= (1 << 1); |
|
2784 j++; |
|
2785 break; |
|
2786 } |
|
2787 |
|
2788 if (!j) |
|
2789 e_warn("Unable to create IPMI pass-through filter\n"); |
|
2790 break; |
|
2791 } |
|
2792 |
|
2793 ew32(MANC2H, manc2h); |
|
2794 ew32(MANC, manc); |
|
2795 } |
|
2796 |
|
2797 /** |
|
2798 * e1000_configure_tx - Configure Transmit Unit after Reset |
|
2799 * @adapter: board private structure |
|
2800 * |
|
2801 * Configure the Tx unit of the MAC after a reset. |
|
2802 **/ |
|
2803 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
2804 { |
|
2805 struct e1000_hw *hw = &adapter->hw; |
|
2806 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2807 u64 tdba; |
|
2808 u32 tdlen, tarc; |
|
2809 |
|
2810 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
2811 tdba = tx_ring->dma; |
|
2812 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2813 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
|
2814 ew32(TDBAH(0), (tdba >> 32)); |
|
2815 ew32(TDLEN(0), tdlen); |
|
2816 ew32(TDH(0), 0); |
|
2817 ew32(TDT(0), 0); |
|
2818 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0); |
|
2819 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0); |
|
2820 |
|
2821 /* Set the Tx Interrupt Delay register */ |
|
2822 ew32(TIDV, adapter->tx_int_delay); |
|
2823 /* Tx irq moderation */ |
|
2824 ew32(TADV, adapter->tx_abs_int_delay); |
|
2825 |
|
2826 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
2827 u32 txdctl = er32(TXDCTL(0)); |
|
2828 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
|
2829 E1000_TXDCTL_WTHRESH); |
|
2830 /* |
|
2831 * set up some performance related parameters to encourage the |
|
2832 * hardware to use the bus more efficiently in bursts, depends |
|
2833 * on the tx_int_delay to be enabled, |
|
2834 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls |
|
2835 * hthresh = 1 ==> prefetch when one or more available |
|
2836 * pthresh = 0x1f ==> prefetch if internal cache 31 or less |
|
2837 * BEWARE: this seems to work but should be considered first if |
|
2838 * there are Tx hangs or other Tx related bugs |
|
2839 */ |
|
2840 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; |
|
2841 ew32(TXDCTL(0), txdctl); |
|
2842 } |
|
2843 /* erratum work around: set txdctl the same for both queues */ |
|
2844 ew32(TXDCTL(1), er32(TXDCTL(0))); |
|
2845 |
|
2846 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
|
2847 tarc = er32(TARC(0)); |
|
2848 /* |
|
2849 * set the speed mode bit, we'll clear it if we're not at |
|
2850 * gigabit link later |
|
2851 */ |
|
2852 #define SPEED_MODE_BIT (1 << 21) |
|
2853 tarc |= SPEED_MODE_BIT; |
|
2854 ew32(TARC(0), tarc); |
|
2855 } |
|
2856 |
|
2857 /* errata: program both queues to unweighted RR */ |
|
2858 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { |
|
2859 tarc = er32(TARC(0)); |
|
2860 tarc |= 1; |
|
2861 ew32(TARC(0), tarc); |
|
2862 tarc = er32(TARC(1)); |
|
2863 tarc |= 1; |
|
2864 ew32(TARC(1), tarc); |
|
2865 } |
|
2866 |
|
2867 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
2868 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
2869 |
|
2870 /* only set IDE if we are delaying interrupts using the timers */ |
|
2871 if (adapter->tx_int_delay) |
|
2872 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
2873 |
|
2874 /* enable Report Status bit */ |
|
2875 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
2876 |
|
2877 hw->mac.ops.config_collision_dist(hw); |
|
2878 } |
|
2879 |
|
2880 /** |
|
2881 * e1000_setup_rctl - configure the receive control registers |
|
2882 * @adapter: Board private structure |
|
2883 **/ |
|
2884 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
2885 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
2886 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
2887 { |
|
2888 struct e1000_hw *hw = &adapter->hw; |
|
2889 u32 rctl, rfctl; |
|
2890 u32 pages = 0; |
|
2891 |
|
2892 /* Workaround Si errata on PCHx - configure jumbo frame flow */ |
|
2893 if (hw->mac.type >= e1000_pch2lan) { |
|
2894 s32 ret_val; |
|
2895 |
|
2896 if (adapter->netdev->mtu > ETH_DATA_LEN) |
|
2897 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); |
|
2898 else |
|
2899 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); |
|
2900 |
|
2901 if (ret_val) |
|
2902 e_dbg("failed to enable jumbo frame workaround mode\n"); |
|
2903 } |
|
2904 |
|
2905 /* Program MC offset vector base */ |
|
2906 rctl = er32(RCTL); |
|
2907 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
2908 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
2909 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
2910 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
2911 |
|
2912 /* Do not Store bad packets */ |
|
2913 rctl &= ~E1000_RCTL_SBP; |
|
2914 |
|
2915 /* Enable Long Packet receive */ |
|
2916 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
2917 rctl &= ~E1000_RCTL_LPE; |
|
2918 else |
|
2919 rctl |= E1000_RCTL_LPE; |
|
2920 |
|
2921 /* Some systems expect that the CRC is included in SMBUS traffic. The |
|
2922 * hardware strips the CRC before sending to both SMBUS (BMC) and to |
|
2923 * host memory when this is enabled |
|
2924 */ |
|
2925 if (adapter->flags2 & FLAG2_CRC_STRIPPING) |
|
2926 rctl |= E1000_RCTL_SECRC; |
|
2927 |
|
2928 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
|
2929 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { |
|
2930 u16 phy_data; |
|
2931 |
|
2932 e1e_rphy(hw, PHY_REG(770, 26), &phy_data); |
|
2933 phy_data &= 0xfff8; |
|
2934 phy_data |= (1 << 2); |
|
2935 e1e_wphy(hw, PHY_REG(770, 26), phy_data); |
|
2936 |
|
2937 e1e_rphy(hw, 22, &phy_data); |
|
2938 phy_data &= 0x0fff; |
|
2939 phy_data |= (1 << 14); |
|
2940 e1e_wphy(hw, 0x10, 0x2823); |
|
2941 e1e_wphy(hw, 0x11, 0x0003); |
|
2942 e1e_wphy(hw, 22, phy_data); |
|
2943 } |
|
2944 |
|
2945 /* Setup buffer sizes */ |
|
2946 rctl &= ~E1000_RCTL_SZ_4096; |
|
2947 rctl |= E1000_RCTL_BSEX; |
|
2948 switch (adapter->rx_buffer_len) { |
|
2949 case 2048: |
|
2950 default: |
|
2951 rctl |= E1000_RCTL_SZ_2048; |
|
2952 rctl &= ~E1000_RCTL_BSEX; |
|
2953 break; |
|
2954 case 4096: |
|
2955 rctl |= E1000_RCTL_SZ_4096; |
|
2956 break; |
|
2957 case 8192: |
|
2958 rctl |= E1000_RCTL_SZ_8192; |
|
2959 break; |
|
2960 case 16384: |
|
2961 rctl |= E1000_RCTL_SZ_16384; |
|
2962 break; |
|
2963 } |
|
2964 |
|
2965 /* Enable Extended Status in all Receive Descriptors */ |
|
2966 rfctl = er32(RFCTL); |
|
2967 rfctl |= E1000_RFCTL_EXTEN; |
|
2968 ew32(RFCTL, rfctl); |
|
2969 |
|
2970 /* |
|
2971 * 82571 and greater support packet-split where the protocol |
|
2972 * header is placed in skb->data and the packet data is |
|
2973 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
2974 * In the case of a non-split, skb->data is linearly filled, |
|
2975 * followed by the page buffers. Therefore, skb->data is |
|
2976 * sized to hold the largest protocol header. |
|
2977 * |
|
2978 * allocations using alloc_page take too long for regular MTU |
|
2979 * so only enable packet split for jumbo frames |
|
2980 * |
|
2981 * Using pages when the page size is greater than 16k wastes |
|
2982 * a lot of memory, since we allocate 3 pages at all times |
|
2983 * per packet. |
|
2984 */ |
|
2985 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
2986 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
|
2987 adapter->rx_ps_pages = pages; |
|
2988 else |
|
2989 adapter->rx_ps_pages = 0; |
|
2990 |
|
2991 if (adapter->rx_ps_pages) { |
|
2992 u32 psrctl = 0; |
|
2993 |
|
2994 /* Enable Packet split descriptors */ |
|
2995 rctl |= E1000_RCTL_DTYP_PS; |
|
2996 |
|
2997 psrctl |= adapter->rx_ps_bsize0 >> |
|
2998 E1000_PSRCTL_BSIZE0_SHIFT; |
|
2999 |
|
3000 switch (adapter->rx_ps_pages) { |
|
3001 case 3: |
|
3002 psrctl |= PAGE_SIZE << |
|
3003 E1000_PSRCTL_BSIZE3_SHIFT; |
|
3004 case 2: |
|
3005 psrctl |= PAGE_SIZE << |
|
3006 E1000_PSRCTL_BSIZE2_SHIFT; |
|
3007 case 1: |
|
3008 psrctl |= PAGE_SIZE >> |
|
3009 E1000_PSRCTL_BSIZE1_SHIFT; |
|
3010 break; |
|
3011 } |
|
3012 |
|
3013 ew32(PSRCTL, psrctl); |
|
3014 } |
|
3015 |
|
3016 /* This is useful for sniffing bad packets. */ |
|
3017 if (adapter->netdev->features & NETIF_F_RXALL) { |
|
3018 /* UPE and MPE will be handled by normal PROMISC logic |
|
3019 * in e1000e_set_rx_mode */ |
|
3020 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
|
3021 E1000_RCTL_BAM | /* RX All Bcast Pkts */ |
|
3022 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ |
|
3023 |
|
3024 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ |
|
3025 E1000_RCTL_DPF | /* Allow filtered pause */ |
|
3026 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ |
|
3027 /* Do not mess with E1000_CTRL_VME, it affects transmit as well, |
|
3028 * and that breaks VLANs. |
|
3029 */ |
|
3030 } |
|
3031 |
|
3032 ew32(RCTL, rctl); |
|
3033 /* just started the receive unit, no need to restart */ |
|
3034 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
3035 } |
|
3036 |
|
3037 /** |
|
3038 * e1000_configure_rx - Configure Receive Unit after Reset |
|
3039 * @adapter: board private structure |
|
3040 * |
|
3041 * Configure the Rx unit of the MAC after a reset. |
|
3042 **/ |
|
3043 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
3044 { |
|
3045 struct e1000_hw *hw = &adapter->hw; |
|
3046 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3047 u64 rdba; |
|
3048 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
3049 |
|
3050 if (adapter->rx_ps_pages) { |
|
3051 /* this is a 32 byte descriptor */ |
|
3052 rdlen = rx_ring->count * |
|
3053 sizeof(union e1000_rx_desc_packet_split); |
|
3054 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
3055 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
3056 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3057 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3058 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
3059 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
3060 } else { |
|
3061 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3062 adapter->clean_rx = e1000_clean_rx_irq; |
|
3063 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
3064 } |
|
3065 |
|
3066 /* disable receives while setting up the descriptors */ |
|
3067 rctl = er32(RCTL); |
|
3068 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3069 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3070 e1e_flush(); |
|
3071 usleep_range(10000, 20000); |
|
3072 |
|
3073 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
3074 /* |
|
3075 * set the writeback threshold (only takes effect if the RDTR |
|
3076 * is set). set GRAN=1 and write back up to 0x4 worth, and |
|
3077 * enable prefetching of 0x20 Rx descriptors |
|
3078 * granularity = 01 |
|
3079 * wthresh = 04, |
|
3080 * hthresh = 04, |
|
3081 * pthresh = 0x20 |
|
3082 */ |
|
3083 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3084 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3085 |
|
3086 /* |
|
3087 * override the delay timers for enabling bursting, only if |
|
3088 * the value was not set by the user via module options |
|
3089 */ |
|
3090 if (adapter->rx_int_delay == DEFAULT_RDTR) |
|
3091 adapter->rx_int_delay = BURST_RDTR; |
|
3092 if (adapter->rx_abs_int_delay == DEFAULT_RADV) |
|
3093 adapter->rx_abs_int_delay = BURST_RADV; |
|
3094 } |
|
3095 |
|
3096 /* set the Receive Delay Timer Register */ |
|
3097 ew32(RDTR, adapter->rx_int_delay); |
|
3098 |
|
3099 /* irq moderation */ |
|
3100 ew32(RADV, adapter->rx_abs_int_delay); |
|
3101 if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
|
3102 e1000e_write_itr(adapter, adapter->itr); |
|
3103 |
|
3104 ctrl_ext = er32(CTRL_EXT); |
|
3105 /* Auto-Mask interrupts upon ICR access */ |
|
3106 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
3107 ew32(IAM, 0xffffffff); |
|
3108 ew32(CTRL_EXT, ctrl_ext); |
|
3109 e1e_flush(); |
|
3110 |
|
3111 /* |
|
3112 * Setup the HW Rx Head and Tail Descriptor Pointers and |
|
3113 * the Base and Length of the Rx Descriptor Ring |
|
3114 */ |
|
3115 rdba = rx_ring->dma; |
|
3116 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
|
3117 ew32(RDBAH(0), (rdba >> 32)); |
|
3118 ew32(RDLEN(0), rdlen); |
|
3119 ew32(RDH(0), 0); |
|
3120 ew32(RDT(0), 0); |
|
3121 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0); |
|
3122 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0); |
|
3123 |
|
3124 /* Enable Receive Checksum Offload for TCP and UDP */ |
|
3125 rxcsum = er32(RXCSUM); |
|
3126 if (adapter->netdev->features & NETIF_F_RXCSUM) |
|
3127 rxcsum |= E1000_RXCSUM_TUOFL; |
|
3128 else |
|
3129 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
3130 ew32(RXCSUM, rxcsum); |
|
3131 |
|
3132 if (adapter->hw.mac.type == e1000_pch2lan) { |
|
3133 /* |
|
3134 * With jumbo frames, excessive C-state transition |
|
3135 * latencies result in dropped transactions. |
|
3136 */ |
|
3137 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3138 u32 rxdctl = er32(RXDCTL(0)); |
|
3139 ew32(RXDCTL(0), rxdctl | 0x3); |
|
3140 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55); |
|
3141 } else { |
|
3142 pm_qos_update_request(&adapter->netdev->pm_qos_req, |
|
3143 PM_QOS_DEFAULT_VALUE); |
|
3144 } |
|
3145 } |
|
3146 |
|
3147 /* Enable Receives */ |
|
3148 ew32(RCTL, rctl); |
|
3149 } |
|
3150 |
|
3151 /** |
|
3152 * e1000e_write_mc_addr_list - write multicast addresses to MTA |
|
3153 * @netdev: network interface device structure |
|
3154 * |
|
3155 * Writes multicast address list to the MTA hash table. |
|
3156 * Returns: -ENOMEM on failure |
|
3157 * 0 on no addresses written |
|
3158 * X on writing X addresses to MTA |
|
3159 */ |
|
3160 static int e1000e_write_mc_addr_list(struct net_device *netdev) |
|
3161 { |
|
3162 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3163 struct e1000_hw *hw = &adapter->hw; |
|
3164 struct netdev_hw_addr *ha; |
|
3165 u8 *mta_list; |
|
3166 int i; |
|
3167 |
|
3168 if (netdev_mc_empty(netdev)) { |
|
3169 /* nothing to program, so clear mc list */ |
|
3170 hw->mac.ops.update_mc_addr_list(hw, NULL, 0); |
|
3171 return 0; |
|
3172 } |
|
3173 |
|
3174 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); |
|
3175 if (!mta_list) |
|
3176 return -ENOMEM; |
|
3177 |
|
3178 /* update_mc_addr_list expects a packed array of only addresses. */ |
|
3179 i = 0; |
|
3180 netdev_for_each_mc_addr(ha, netdev) |
|
3181 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
|
3182 |
|
3183 hw->mac.ops.update_mc_addr_list(hw, mta_list, i); |
|
3184 kfree(mta_list); |
|
3185 |
|
3186 return netdev_mc_count(netdev); |
|
3187 } |
|
3188 |
|
3189 /** |
|
3190 * e1000e_write_uc_addr_list - write unicast addresses to RAR table |
|
3191 * @netdev: network interface device structure |
|
3192 * |
|
3193 * Writes unicast address list to the RAR table. |
|
3194 * Returns: -ENOMEM on failure/insufficient address space |
|
3195 * 0 on no addresses written |
|
3196 * X on writing X addresses to the RAR table |
|
3197 **/ |
|
3198 static int e1000e_write_uc_addr_list(struct net_device *netdev) |
|
3199 { |
|
3200 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3201 struct e1000_hw *hw = &adapter->hw; |
|
3202 unsigned int rar_entries = hw->mac.rar_entry_count; |
|
3203 int count = 0; |
|
3204 |
|
3205 /* save a rar entry for our hardware address */ |
|
3206 rar_entries--; |
|
3207 |
|
3208 /* save a rar entry for the LAA workaround */ |
|
3209 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) |
|
3210 rar_entries--; |
|
3211 |
|
3212 /* return ENOMEM indicating insufficient memory for addresses */ |
|
3213 if (netdev_uc_count(netdev) > rar_entries) |
|
3214 return -ENOMEM; |
|
3215 |
|
3216 if (!netdev_uc_empty(netdev) && rar_entries) { |
|
3217 struct netdev_hw_addr *ha; |
|
3218 |
|
3219 /* |
|
3220 * write the addresses in reverse order to avoid write |
|
3221 * combining |
|
3222 */ |
|
3223 netdev_for_each_uc_addr(ha, netdev) { |
|
3224 if (!rar_entries) |
|
3225 break; |
|
3226 hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); |
|
3227 count++; |
|
3228 } |
|
3229 } |
|
3230 |
|
3231 /* zero out the remaining RAR entries not used above */ |
|
3232 for (; rar_entries > 0; rar_entries--) { |
|
3233 ew32(RAH(rar_entries), 0); |
|
3234 ew32(RAL(rar_entries), 0); |
|
3235 } |
|
3236 e1e_flush(); |
|
3237 |
|
3238 return count; |
|
3239 } |
|
3240 |
|
3241 /** |
|
3242 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set |
|
3243 * @netdev: network interface device structure |
|
3244 * |
|
3245 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast |
|
3246 * address list or the network interface flags are updated. This routine is |
|
3247 * responsible for configuring the hardware for proper unicast, multicast, |
|
3248 * promiscuous mode, and all-multi behavior. |
|
3249 **/ |
|
3250 static void e1000e_set_rx_mode(struct net_device *netdev) |
|
3251 { |
|
3252 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3253 struct e1000_hw *hw = &adapter->hw; |
|
3254 u32 rctl; |
|
3255 |
|
3256 /* Check for Promiscuous and All Multicast modes */ |
|
3257 rctl = er32(RCTL); |
|
3258 |
|
3259 /* clear the affected bits */ |
|
3260 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3261 |
|
3262 if (netdev->flags & IFF_PROMISC) { |
|
3263 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3264 /* Do not hardware filter VLANs in promisc mode */ |
|
3265 e1000e_vlan_filter_disable(adapter); |
|
3266 } else { |
|
3267 int count; |
|
3268 |
|
3269 if (netdev->flags & IFF_ALLMULTI) { |
|
3270 rctl |= E1000_RCTL_MPE; |
|
3271 } else { |
|
3272 /* |
|
3273 * Write addresses to the MTA, if the attempt fails |
|
3274 * then we should just turn on promiscuous mode so |
|
3275 * that we can at least receive multicast traffic |
|
3276 */ |
|
3277 count = e1000e_write_mc_addr_list(netdev); |
|
3278 if (count < 0) |
|
3279 rctl |= E1000_RCTL_MPE; |
|
3280 } |
|
3281 e1000e_vlan_filter_enable(adapter); |
|
3282 /* |
|
3283 * Write addresses to available RAR registers, if there is not |
|
3284 * sufficient space to store all the addresses then enable |
|
3285 * unicast promiscuous mode |
|
3286 */ |
|
3287 count = e1000e_write_uc_addr_list(netdev); |
|
3288 if (count < 0) |
|
3289 rctl |= E1000_RCTL_UPE; |
|
3290 } |
|
3291 |
|
3292 ew32(RCTL, rctl); |
|
3293 |
|
3294 if (netdev->features & NETIF_F_HW_VLAN_RX) |
|
3295 e1000e_vlan_strip_enable(adapter); |
|
3296 else |
|
3297 e1000e_vlan_strip_disable(adapter); |
|
3298 } |
|
3299 |
|
3300 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter) |
|
3301 { |
|
3302 struct e1000_hw *hw = &adapter->hw; |
|
3303 u32 mrqc, rxcsum; |
|
3304 int i; |
|
3305 static const u32 rsskey[10] = { |
|
3306 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0, |
|
3307 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe |
|
3308 }; |
|
3309 |
|
3310 /* Fill out hash function seed */ |
|
3311 for (i = 0; i < 10; i++) |
|
3312 ew32(RSSRK(i), rsskey[i]); |
|
3313 |
|
3314 /* Direct all traffic to queue 0 */ |
|
3315 for (i = 0; i < 32; i++) |
|
3316 ew32(RETA(i), 0); |
|
3317 |
|
3318 /* |
|
3319 * Disable raw packet checksumming so that RSS hash is placed in |
|
3320 * descriptor on writeback. |
|
3321 */ |
|
3322 rxcsum = er32(RXCSUM); |
|
3323 rxcsum |= E1000_RXCSUM_PCSD; |
|
3324 |
|
3325 ew32(RXCSUM, rxcsum); |
|
3326 |
|
3327 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 | |
|
3328 E1000_MRQC_RSS_FIELD_IPV4_TCP | |
|
3329 E1000_MRQC_RSS_FIELD_IPV6 | |
|
3330 E1000_MRQC_RSS_FIELD_IPV6_TCP | |
|
3331 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
|
3332 |
|
3333 ew32(MRQC, mrqc); |
|
3334 } |
|
3335 |
|
3336 /** |
|
3337 * e1000_configure - configure the hardware for Rx and Tx |
|
3338 * @adapter: private board structure |
|
3339 **/ |
|
3340 static void e1000_configure(struct e1000_adapter *adapter) |
|
3341 { |
|
3342 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3343 |
|
3344 e1000e_set_rx_mode(adapter->netdev); |
|
3345 |
|
3346 e1000_restore_vlan(adapter); |
|
3347 e1000_init_manageability_pt(adapter); |
|
3348 |
|
3349 e1000_configure_tx(adapter); |
|
3350 |
|
3351 if (adapter->netdev->features & NETIF_F_RXHASH) |
|
3352 e1000e_setup_rss_hash(adapter); |
|
3353 e1000_setup_rctl(adapter); |
|
3354 e1000_configure_rx(adapter); |
|
3355 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL); |
|
3356 } |
|
3357 |
|
3358 /** |
|
3359 * e1000e_power_up_phy - restore link in case the phy was powered down |
|
3360 * @adapter: address of board private structure |
|
3361 * |
|
3362 * The phy may be powered down to save power and turn off link when the |
|
3363 * driver is unloaded and wake on lan is not enabled (among others) |
|
3364 * *** this routine MUST be followed by a call to e1000e_reset *** |
|
3365 **/ |
|
3366 void e1000e_power_up_phy(struct e1000_adapter *adapter) |
|
3367 { |
|
3368 if (adapter->hw.phy.ops.power_up) |
|
3369 adapter->hw.phy.ops.power_up(&adapter->hw); |
|
3370 |
|
3371 adapter->hw.mac.ops.setup_link(&adapter->hw); |
|
3372 } |
|
3373 |
|
3374 /** |
|
3375 * e1000_power_down_phy - Power down the PHY |
|
3376 * |
|
3377 * Power down the PHY so no link is implied when interface is down. |
|
3378 * The PHY cannot be powered down if management or WoL is active. |
|
3379 */ |
|
3380 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
3381 { |
|
3382 /* WoL is enabled */ |
|
3383 if (adapter->wol) |
|
3384 return; |
|
3385 |
|
3386 if (adapter->hw.phy.ops.power_down) |
|
3387 adapter->hw.phy.ops.power_down(&adapter->hw); |
|
3388 } |
|
3389 |
|
3390 /** |
|
3391 * e1000e_reset - bring the hardware into a known good state |
|
3392 * |
|
3393 * This function boots the hardware and enables some settings that |
|
3394 * require a configuration cycle of the hardware - those cannot be |
|
3395 * set/changed during runtime. After reset the device needs to be |
|
3396 * properly configured for Rx, Tx etc. |
|
3397 */ |
|
3398 void e1000e_reset(struct e1000_adapter *adapter) |
|
3399 { |
|
3400 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
3401 struct e1000_fc_info *fc = &adapter->hw.fc; |
|
3402 struct e1000_hw *hw = &adapter->hw; |
|
3403 u32 tx_space, min_tx_space, min_rx_space; |
|
3404 u32 pba = adapter->pba; |
|
3405 u16 hwm; |
|
3406 |
|
3407 /* reset Packet Buffer Allocation to default */ |
|
3408 ew32(PBA, pba); |
|
3409 |
|
3410 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3411 /* |
|
3412 * To maintain wire speed transmits, the Tx FIFO should be |
|
3413 * large enough to accommodate two full transmit packets, |
|
3414 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
3415 * the Rx FIFO should be large enough to accommodate at least |
|
3416 * one full receive packet and is similarly rounded up and |
|
3417 * expressed in KB. |
|
3418 */ |
|
3419 pba = er32(PBA); |
|
3420 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
3421 tx_space = pba >> 16; |
|
3422 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
3423 pba &= 0xffff; |
|
3424 /* |
|
3425 * the Tx fifo also stores 16 bytes of information about the Tx |
|
3426 * but don't include ethernet FCS because hardware appends it |
|
3427 */ |
|
3428 min_tx_space = (adapter->max_frame_size + |
|
3429 sizeof(struct e1000_tx_desc) - |
|
3430 ETH_FCS_LEN) * 2; |
|
3431 min_tx_space = ALIGN(min_tx_space, 1024); |
|
3432 min_tx_space >>= 10; |
|
3433 /* software strips receive CRC, so leave room for it */ |
|
3434 min_rx_space = adapter->max_frame_size; |
|
3435 min_rx_space = ALIGN(min_rx_space, 1024); |
|
3436 min_rx_space >>= 10; |
|
3437 |
|
3438 /* |
|
3439 * If current Tx allocation is less than the min Tx FIFO size, |
|
3440 * and the min Tx FIFO size is less than the current Rx FIFO |
|
3441 * allocation, take space away from current Rx allocation |
|
3442 */ |
|
3443 if ((tx_space < min_tx_space) && |
|
3444 ((min_tx_space - tx_space) < pba)) { |
|
3445 pba -= min_tx_space - tx_space; |
|
3446 |
|
3447 /* |
|
3448 * if short on Rx space, Rx wins and must trump Tx |
|
3449 * adjustment or use Early Receive if available |
|
3450 */ |
|
3451 if (pba < min_rx_space) |
|
3452 pba = min_rx_space; |
|
3453 } |
|
3454 |
|
3455 ew32(PBA, pba); |
|
3456 } |
|
3457 |
|
3458 /* |
|
3459 * flow control settings |
|
3460 * |
|
3461 * The high water mark must be low enough to fit one full frame |
|
3462 * (or the size used for early receive) above it in the Rx FIFO. |
|
3463 * Set it to the lower of: |
|
3464 * - 90% of the Rx FIFO size, and |
|
3465 * - the full Rx FIFO size minus one full frame |
|
3466 */ |
|
3467 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
|
3468 fc->pause_time = 0xFFFF; |
|
3469 else |
|
3470 fc->pause_time = E1000_FC_PAUSE_TIME; |
|
3471 fc->send_xon = true; |
|
3472 fc->current_mode = fc->requested_mode; |
|
3473 |
|
3474 switch (hw->mac.type) { |
|
3475 case e1000_ich9lan: |
|
3476 case e1000_ich10lan: |
|
3477 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3478 pba = 14; |
|
3479 ew32(PBA, pba); |
|
3480 fc->high_water = 0x2800; |
|
3481 fc->low_water = fc->high_water - 8; |
|
3482 break; |
|
3483 } |
|
3484 /* fall-through */ |
|
3485 default: |
|
3486 hwm = min(((pba << 10) * 9 / 10), |
|
3487 ((pba << 10) - adapter->max_frame_size)); |
|
3488 |
|
3489 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
|
3490 fc->low_water = fc->high_water - 8; |
|
3491 break; |
|
3492 case e1000_pchlan: |
|
3493 /* |
|
3494 * Workaround PCH LOM adapter hangs with certain network |
|
3495 * loads. If hangs persist, try disabling Tx flow control. |
|
3496 */ |
|
3497 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3498 fc->high_water = 0x3500; |
|
3499 fc->low_water = 0x1500; |
|
3500 } else { |
|
3501 fc->high_water = 0x5000; |
|
3502 fc->low_water = 0x3000; |
|
3503 } |
|
3504 fc->refresh_time = 0x1000; |
|
3505 break; |
|
3506 case e1000_pch2lan: |
|
3507 case e1000_pch_lpt: |
|
3508 fc->high_water = 0x05C20; |
|
3509 fc->low_water = 0x05048; |
|
3510 fc->pause_time = 0x0650; |
|
3511 fc->refresh_time = 0x0400; |
|
3512 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3513 pba = 14; |
|
3514 ew32(PBA, pba); |
|
3515 } |
|
3516 break; |
|
3517 } |
|
3518 |
|
3519 /* |
|
3520 * Alignment of Tx data is on an arbitrary byte boundary with the |
|
3521 * maximum size per Tx descriptor limited only to the transmit |
|
3522 * allocation of the packet buffer minus 96 bytes with an upper |
|
3523 * limit of 24KB due to receive synchronization limitations. |
|
3524 */ |
|
3525 adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96, |
|
3526 24 << 10); |
|
3527 |
|
3528 /* |
|
3529 * Disable Adaptive Interrupt Moderation if 2 full packets cannot |
|
3530 * fit in receive buffer. |
|
3531 */ |
|
3532 if (adapter->itr_setting & 0x3) { |
|
3533 if ((adapter->max_frame_size * 2) > (pba << 10)) { |
|
3534 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
|
3535 dev_info(&adapter->pdev->dev, |
|
3536 "Interrupt Throttle Rate turned off\n"); |
|
3537 adapter->flags2 |= FLAG2_DISABLE_AIM; |
|
3538 e1000e_write_itr(adapter, 0); |
|
3539 } |
|
3540 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
3541 dev_info(&adapter->pdev->dev, |
|
3542 "Interrupt Throttle Rate turned on\n"); |
|
3543 adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
|
3544 adapter->itr = 20000; |
|
3545 e1000e_write_itr(adapter, adapter->itr); |
|
3546 } |
|
3547 } |
|
3548 |
|
3549 /* Allow time for pending master requests to run */ |
|
3550 mac->ops.reset_hw(hw); |
|
3551 |
|
3552 /* |
|
3553 * For parts with AMT enabled, let the firmware know |
|
3554 * that the network interface is in control |
|
3555 */ |
|
3556 if (adapter->flags & FLAG_HAS_AMT) |
|
3557 e1000e_get_hw_control(adapter); |
|
3558 |
|
3559 ew32(WUC, 0); |
|
3560 |
|
3561 if (mac->ops.init_hw(hw)) |
|
3562 e_err("Hardware Error\n"); |
|
3563 |
|
3564 e1000_update_mng_vlan(adapter); |
|
3565 |
|
3566 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
3567 ew32(VET, ETH_P_8021Q); |
|
3568 |
|
3569 e1000e_reset_adaptive(hw); |
|
3570 |
|
3571 if (!netif_running(adapter->netdev) && |
|
3572 !test_bit(__E1000_TESTING, &adapter->state)) { |
|
3573 e1000_power_down_phy(adapter); |
|
3574 return; |
|
3575 } |
|
3576 |
|
3577 e1000_get_phy_info(hw); |
|
3578 |
|
3579 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
|
3580 !(adapter->flags & FLAG_SMART_POWER_DOWN)) { |
|
3581 u16 phy_data = 0; |
|
3582 /* |
|
3583 * speed up time to link by disabling smart power down, ignore |
|
3584 * the return value of this function because there is nothing |
|
3585 * different we would do if it failed |
|
3586 */ |
|
3587 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
|
3588 phy_data &= ~IGP02E1000_PM_SPD; |
|
3589 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); |
|
3590 } |
|
3591 } |
|
3592 |
|
3593 int e1000e_up(struct e1000_adapter *adapter) |
|
3594 { |
|
3595 struct e1000_hw *hw = &adapter->hw; |
|
3596 |
|
3597 /* hardware has been reset, we need to reload some things */ |
|
3598 e1000_configure(adapter); |
|
3599 |
|
3600 clear_bit(__E1000_DOWN, &adapter->state); |
|
3601 |
|
3602 if (adapter->msix_entries) |
|
3603 e1000_configure_msix(adapter); |
|
3604 e1000_irq_enable(adapter); |
|
3605 |
|
3606 netif_start_queue(adapter->netdev); |
|
3607 |
|
3608 /* fire a link change interrupt to start the watchdog */ |
|
3609 if (adapter->msix_entries) |
|
3610 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3611 else |
|
3612 ew32(ICS, E1000_ICS_LSC); |
|
3613 |
|
3614 return 0; |
|
3615 } |
|
3616 |
|
3617 static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
|
3618 { |
|
3619 struct e1000_hw *hw = &adapter->hw; |
|
3620 |
|
3621 if (!(adapter->flags2 & FLAG2_DMA_BURST)) |
|
3622 return; |
|
3623 |
|
3624 /* flush pending descriptor writebacks to memory */ |
|
3625 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
3626 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
3627 |
|
3628 /* execute the writes immediately */ |
|
3629 e1e_flush(); |
|
3630 |
|
3631 /* |
|
3632 * due to rare timing issues, write to TIDV/RDTR again to ensure the |
|
3633 * write is successful |
|
3634 */ |
|
3635 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
3636 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
3637 |
|
3638 /* execute the writes immediately */ |
|
3639 e1e_flush(); |
|
3640 } |
|
3641 |
|
3642 static void e1000e_update_stats(struct e1000_adapter *adapter); |
|
3643 |
|
3644 void e1000e_down(struct e1000_adapter *adapter) |
|
3645 { |
|
3646 struct net_device *netdev = adapter->netdev; |
|
3647 struct e1000_hw *hw = &adapter->hw; |
|
3648 u32 tctl, rctl; |
|
3649 |
|
3650 /* |
|
3651 * signal that we're down so the interrupt handler does not |
|
3652 * reschedule our watchdog timer |
|
3653 */ |
|
3654 set_bit(__E1000_DOWN, &adapter->state); |
|
3655 |
|
3656 /* disable receives in the hardware */ |
|
3657 rctl = er32(RCTL); |
|
3658 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3659 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3660 /* flush and sleep below */ |
|
3661 |
|
3662 netif_stop_queue(netdev); |
|
3663 |
|
3664 /* disable transmits in the hardware */ |
|
3665 tctl = er32(TCTL); |
|
3666 tctl &= ~E1000_TCTL_EN; |
|
3667 ew32(TCTL, tctl); |
|
3668 |
|
3669 /* flush both disables and wait for them to finish */ |
|
3670 e1e_flush(); |
|
3671 usleep_range(10000, 20000); |
|
3672 |
|
3673 e1000_irq_disable(adapter); |
|
3674 |
|
3675 del_timer_sync(&adapter->watchdog_timer); |
|
3676 del_timer_sync(&adapter->phy_info_timer); |
|
3677 |
|
3678 netif_carrier_off(netdev); |
|
3679 |
|
3680 spin_lock(&adapter->stats64_lock); |
|
3681 e1000e_update_stats(adapter); |
|
3682 spin_unlock(&adapter->stats64_lock); |
|
3683 |
|
3684 e1000e_flush_descriptors(adapter); |
|
3685 e1000_clean_tx_ring(adapter->tx_ring); |
|
3686 e1000_clean_rx_ring(adapter->rx_ring); |
|
3687 |
|
3688 adapter->link_speed = 0; |
|
3689 adapter->link_duplex = 0; |
|
3690 |
|
3691 if (!pci_channel_offline(adapter->pdev)) |
|
3692 e1000e_reset(adapter); |
|
3693 |
|
3694 /* |
|
3695 * TODO: for power management, we could drop the link and |
|
3696 * pci_disable_device here. |
|
3697 */ |
|
3698 } |
|
3699 |
|
3700 void e1000e_reinit_locked(struct e1000_adapter *adapter) |
|
3701 { |
|
3702 might_sleep(); |
|
3703 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
3704 usleep_range(1000, 2000); |
|
3705 e1000e_down(adapter); |
|
3706 e1000e_up(adapter); |
|
3707 clear_bit(__E1000_RESETTING, &adapter->state); |
|
3708 } |
|
3709 |
|
3710 /** |
|
3711 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
3712 * @adapter: board private structure to initialize |
|
3713 * |
|
3714 * e1000_sw_init initializes the Adapter private data structure. |
|
3715 * Fields are initialized based on PCI device information and |
|
3716 * OS network device settings (MTU size). |
|
3717 **/ |
|
3718 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
3719 { |
|
3720 struct net_device *netdev = adapter->netdev; |
|
3721 |
|
3722 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
|
3723 adapter->rx_ps_bsize0 = 128; |
|
3724 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
|
3725 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
|
3726 adapter->tx_ring_count = E1000_DEFAULT_TXD; |
|
3727 adapter->rx_ring_count = E1000_DEFAULT_RXD; |
|
3728 |
|
3729 spin_lock_init(&adapter->stats64_lock); |
|
3730 |
|
3731 e1000e_set_interrupt_capability(adapter); |
|
3732 |
|
3733 if (e1000_alloc_queues(adapter)) |
|
3734 return -ENOMEM; |
|
3735 |
|
3736 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
3737 e1000_irq_disable(adapter); |
|
3738 |
|
3739 set_bit(__E1000_DOWN, &adapter->state); |
|
3740 return 0; |
|
3741 } |
|
3742 |
|
3743 /** |
|
3744 * e1000_intr_msi_test - Interrupt Handler |
|
3745 * @irq: interrupt number |
|
3746 * @data: pointer to a network interface device structure |
|
3747 **/ |
|
3748 static irqreturn_t e1000_intr_msi_test(int irq, void *data) |
|
3749 { |
|
3750 struct net_device *netdev = data; |
|
3751 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3752 struct e1000_hw *hw = &adapter->hw; |
|
3753 u32 icr = er32(ICR); |
|
3754 |
|
3755 e_dbg("icr is %08X\n", icr); |
|
3756 if (icr & E1000_ICR_RXSEQ) { |
|
3757 adapter->flags &= ~FLAG_MSI_TEST_FAILED; |
|
3758 wmb(); |
|
3759 } |
|
3760 |
|
3761 return IRQ_HANDLED; |
|
3762 } |
|
3763 |
|
3764 /** |
|
3765 * e1000_test_msi_interrupt - Returns 0 for successful test |
|
3766 * @adapter: board private struct |
|
3767 * |
|
3768 * code flow taken from tg3.c |
|
3769 **/ |
|
3770 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) |
|
3771 { |
|
3772 struct net_device *netdev = adapter->netdev; |
|
3773 struct e1000_hw *hw = &adapter->hw; |
|
3774 int err; |
|
3775 |
|
3776 /* poll_enable hasn't been called yet, so don't need disable */ |
|
3777 /* clear any pending events */ |
|
3778 er32(ICR); |
|
3779 |
|
3780 /* free the real vector and request a test handler */ |
|
3781 e1000_free_irq(adapter); |
|
3782 e1000e_reset_interrupt_capability(adapter); |
|
3783 |
|
3784 /* Assume that the test fails, if it succeeds then the test |
|
3785 * MSI irq handler will unset this flag */ |
|
3786 adapter->flags |= FLAG_MSI_TEST_FAILED; |
|
3787 |
|
3788 err = pci_enable_msi(adapter->pdev); |
|
3789 if (err) |
|
3790 goto msi_test_failed; |
|
3791 |
|
3792 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
|
3793 netdev->name, netdev); |
|
3794 if (err) { |
|
3795 pci_disable_msi(adapter->pdev); |
|
3796 goto msi_test_failed; |
|
3797 } |
|
3798 |
|
3799 wmb(); |
|
3800 |
|
3801 e1000_irq_enable(adapter); |
|
3802 |
|
3803 /* fire an unusual interrupt on the test handler */ |
|
3804 ew32(ICS, E1000_ICS_RXSEQ); |
|
3805 e1e_flush(); |
|
3806 msleep(100); |
|
3807 |
|
3808 e1000_irq_disable(adapter); |
|
3809 |
|
3810 rmb(); |
|
3811 |
|
3812 if (adapter->flags & FLAG_MSI_TEST_FAILED) { |
|
3813 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
3814 e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
|
3815 } else { |
|
3816 e_dbg("MSI interrupt test succeeded!\n"); |
|
3817 } |
|
3818 |
|
3819 free_irq(adapter->pdev->irq, netdev); |
|
3820 pci_disable_msi(adapter->pdev); |
|
3821 |
|
3822 msi_test_failed: |
|
3823 e1000e_set_interrupt_capability(adapter); |
|
3824 return e1000_request_irq(adapter); |
|
3825 } |
|
3826 |
|
3827 /** |
|
3828 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored |
|
3829 * @adapter: board private struct |
|
3830 * |
|
3831 * code flow taken from tg3.c, called with e1000 interrupts disabled. |
|
3832 **/ |
|
3833 static int e1000_test_msi(struct e1000_adapter *adapter) |
|
3834 { |
|
3835 int err; |
|
3836 u16 pci_cmd; |
|
3837 |
|
3838 if (!(adapter->flags & FLAG_MSI_ENABLED)) |
|
3839 return 0; |
|
3840 |
|
3841 /* disable SERR in case the MSI write causes a master abort */ |
|
3842 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3843 if (pci_cmd & PCI_COMMAND_SERR) |
|
3844 pci_write_config_word(adapter->pdev, PCI_COMMAND, |
|
3845 pci_cmd & ~PCI_COMMAND_SERR); |
|
3846 |
|
3847 err = e1000_test_msi_interrupt(adapter); |
|
3848 |
|
3849 /* re-enable SERR */ |
|
3850 if (pci_cmd & PCI_COMMAND_SERR) { |
|
3851 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3852 pci_cmd |= PCI_COMMAND_SERR; |
|
3853 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); |
|
3854 } |
|
3855 |
|
3856 return err; |
|
3857 } |
|
3858 |
|
3859 /** |
|
3860 * e1000_open - Called when a network interface is made active |
|
3861 * @netdev: network interface device structure |
|
3862 * |
|
3863 * Returns 0 on success, negative value on failure |
|
3864 * |
|
3865 * The open entry point is called when a network interface is made |
|
3866 * active by the system (IFF_UP). At this point all resources needed |
|
3867 * for transmit and receive operations are allocated, the interrupt |
|
3868 * handler is registered with the OS, the watchdog timer is started, |
|
3869 * and the stack is notified that the interface is ready. |
|
3870 **/ |
|
3871 static int e1000_open(struct net_device *netdev) |
|
3872 { |
|
3873 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3874 struct e1000_hw *hw = &adapter->hw; |
|
3875 struct pci_dev *pdev = adapter->pdev; |
|
3876 int err; |
|
3877 |
|
3878 /* disallow open during test */ |
|
3879 if (test_bit(__E1000_TESTING, &adapter->state)) |
|
3880 return -EBUSY; |
|
3881 |
|
3882 pm_runtime_get_sync(&pdev->dev); |
|
3883 |
|
3884 netif_carrier_off(netdev); |
|
3885 |
|
3886 /* allocate transmit descriptors */ |
|
3887 err = e1000e_setup_tx_resources(adapter->tx_ring); |
|
3888 if (err) |
|
3889 goto err_setup_tx; |
|
3890 |
|
3891 /* allocate receive descriptors */ |
|
3892 err = e1000e_setup_rx_resources(adapter->rx_ring); |
|
3893 if (err) |
|
3894 goto err_setup_rx; |
|
3895 |
|
3896 /* |
|
3897 * If AMT is enabled, let the firmware know that the network |
|
3898 * interface is now open and reset the part to a known state. |
|
3899 */ |
|
3900 if (adapter->flags & FLAG_HAS_AMT) { |
|
3901 e1000e_get_hw_control(adapter); |
|
3902 e1000e_reset(adapter); |
|
3903 } |
|
3904 |
|
3905 e1000e_power_up_phy(adapter); |
|
3906 |
|
3907 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
3908 if ((adapter->hw.mng_cookie.status & |
|
3909 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
|
3910 e1000_update_mng_vlan(adapter); |
|
3911 |
|
3912 /* DMA latency requirement to workaround jumbo issue */ |
|
3913 if (adapter->hw.mac.type == e1000_pch2lan) |
|
3914 pm_qos_add_request(&adapter->netdev->pm_qos_req, |
|
3915 PM_QOS_CPU_DMA_LATENCY, |
|
3916 PM_QOS_DEFAULT_VALUE); |
|
3917 |
|
3918 /* |
|
3919 * before we allocate an interrupt, we must be ready to handle it. |
|
3920 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
3921 * as soon as we call pci_request_irq, so we have to setup our |
|
3922 * clean_rx handler before we do so. |
|
3923 */ |
|
3924 e1000_configure(adapter); |
|
3925 |
|
3926 err = e1000_request_irq(adapter); |
|
3927 if (err) |
|
3928 goto err_req_irq; |
|
3929 |
|
3930 /* |
|
3931 * Work around PCIe errata with MSI interrupts causing some chipsets to |
|
3932 * ignore e1000e MSI messages, which means we need to test our MSI |
|
3933 * interrupt now |
|
3934 */ |
|
3935 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
|
3936 err = e1000_test_msi(adapter); |
|
3937 if (err) { |
|
3938 e_err("Interrupt allocation failed\n"); |
|
3939 goto err_req_irq; |
|
3940 } |
|
3941 } |
|
3942 |
|
3943 /* From here on the code is the same as e1000e_up() */ |
|
3944 clear_bit(__E1000_DOWN, &adapter->state); |
|
3945 |
|
3946 napi_enable(&adapter->napi); |
|
3947 |
|
3948 e1000_irq_enable(adapter); |
|
3949 |
|
3950 adapter->tx_hang_recheck = false; |
|
3951 netif_start_queue(netdev); |
|
3952 |
|
3953 adapter->idle_check = true; |
|
3954 pm_runtime_put(&pdev->dev); |
|
3955 |
|
3956 /* fire a link status change interrupt to start the watchdog */ |
|
3957 if (adapter->msix_entries) |
|
3958 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3959 else |
|
3960 ew32(ICS, E1000_ICS_LSC); |
|
3961 |
|
3962 return 0; |
|
3963 |
|
3964 err_req_irq: |
|
3965 e1000e_release_hw_control(adapter); |
|
3966 e1000_power_down_phy(adapter); |
|
3967 e1000e_free_rx_resources(adapter->rx_ring); |
|
3968 err_setup_rx: |
|
3969 e1000e_free_tx_resources(adapter->tx_ring); |
|
3970 err_setup_tx: |
|
3971 e1000e_reset(adapter); |
|
3972 pm_runtime_put_sync(&pdev->dev); |
|
3973 |
|
3974 return err; |
|
3975 } |
|
3976 |
|
3977 /** |
|
3978 * e1000_close - Disables a network interface |
|
3979 * @netdev: network interface device structure |
|
3980 * |
|
3981 * Returns 0, this is not allowed to fail |
|
3982 * |
|
3983 * The close entry point is called when an interface is de-activated |
|
3984 * by the OS. The hardware is still under the drivers control, but |
|
3985 * needs to be disabled. A global MAC reset is issued to stop the |
|
3986 * hardware, and all transmit and receive resources are freed. |
|
3987 **/ |
|
3988 static int e1000_close(struct net_device *netdev) |
|
3989 { |
|
3990 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3991 struct pci_dev *pdev = adapter->pdev; |
|
3992 int count = E1000_CHECK_RESET_COUNT; |
|
3993 |
|
3994 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
3995 usleep_range(10000, 20000); |
|
3996 |
|
3997 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
3998 |
|
3999 pm_runtime_get_sync(&pdev->dev); |
|
4000 |
|
4001 napi_disable(&adapter->napi); |
|
4002 |
|
4003 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
4004 e1000e_down(adapter); |
|
4005 e1000_free_irq(adapter); |
|
4006 } |
|
4007 e1000_power_down_phy(adapter); |
|
4008 |
|
4009 e1000e_free_tx_resources(adapter->tx_ring); |
|
4010 e1000e_free_rx_resources(adapter->rx_ring); |
|
4011 |
|
4012 /* |
|
4013 * kill manageability vlan ID if supported, but not if a vlan with |
|
4014 * the same ID is registered on the host OS (let 8021q kill it) |
|
4015 */ |
|
4016 if (adapter->hw.mng_cookie.status & |
|
4017 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
|
4018 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4019 |
|
4020 /* |
|
4021 * If AMT is enabled, let the firmware know that the network |
|
4022 * interface is now closed |
|
4023 */ |
|
4024 if ((adapter->flags & FLAG_HAS_AMT) && |
|
4025 !test_bit(__E1000_TESTING, &adapter->state)) |
|
4026 e1000e_release_hw_control(adapter); |
|
4027 |
|
4028 if (adapter->hw.mac.type == e1000_pch2lan) |
|
4029 pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
|
4030 |
|
4031 pm_runtime_put_sync(&pdev->dev); |
|
4032 |
|
4033 return 0; |
|
4034 } |
|
4035 /** |
|
4036 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
4037 * @netdev: network interface device structure |
|
4038 * @p: pointer to an address structure |
|
4039 * |
|
4040 * Returns 0 on success, negative on failure |
|
4041 **/ |
|
4042 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
4043 { |
|
4044 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4045 struct e1000_hw *hw = &adapter->hw; |
|
4046 struct sockaddr *addr = p; |
|
4047 |
|
4048 if (!is_valid_ether_addr(addr->sa_data)) |
|
4049 return -EADDRNOTAVAIL; |
|
4050 |
|
4051 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
4052 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
|
4053 |
|
4054 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
|
4055 |
|
4056 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { |
|
4057 /* activate the work around */ |
|
4058 e1000e_set_laa_state_82571(&adapter->hw, 1); |
|
4059 |
|
4060 /* |
|
4061 * Hold a copy of the LAA in RAR[14] This is done so that |
|
4062 * between the time RAR[0] gets clobbered and the time it |
|
4063 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
4064 * of the RARs and no incoming packets directed to this port |
|
4065 * are dropped. Eventually the LAA will be in RAR[0] and |
|
4066 * RAR[14] |
|
4067 */ |
|
4068 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, |
|
4069 adapter->hw.mac.rar_entry_count - 1); |
|
4070 } |
|
4071 |
|
4072 return 0; |
|
4073 } |
|
4074 |
|
4075 /** |
|
4076 * e1000e_update_phy_task - work thread to update phy |
|
4077 * @work: pointer to our work struct |
|
4078 * |
|
4079 * this worker thread exists because we must acquire a |
|
4080 * semaphore to read the phy, which we could msleep while |
|
4081 * waiting for it, and we can't msleep in a timer. |
|
4082 **/ |
|
4083 static void e1000e_update_phy_task(struct work_struct *work) |
|
4084 { |
|
4085 struct e1000_adapter *adapter = container_of(work, |
|
4086 struct e1000_adapter, update_phy_task); |
|
4087 |
|
4088 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4089 return; |
|
4090 |
|
4091 e1000_get_phy_info(&adapter->hw); |
|
4092 } |
|
4093 |
|
4094 /* |
|
4095 * Need to wait a few seconds after link up to get diagnostic information from |
|
4096 * the phy |
|
4097 */ |
|
4098 static void e1000_update_phy_info(unsigned long data) |
|
4099 { |
|
4100 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4101 |
|
4102 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4103 return; |
|
4104 |
|
4105 schedule_work(&adapter->update_phy_task); |
|
4106 } |
|
4107 |
|
4108 /** |
|
4109 * e1000e_update_phy_stats - Update the PHY statistics counters |
|
4110 * @adapter: board private structure |
|
4111 * |
|
4112 * Read/clear the upper 16-bit PHY registers and read/accumulate lower |
|
4113 **/ |
|
4114 static void e1000e_update_phy_stats(struct e1000_adapter *adapter) |
|
4115 { |
|
4116 struct e1000_hw *hw = &adapter->hw; |
|
4117 s32 ret_val; |
|
4118 u16 phy_data; |
|
4119 |
|
4120 ret_val = hw->phy.ops.acquire(hw); |
|
4121 if (ret_val) |
|
4122 return; |
|
4123 |
|
4124 /* |
|
4125 * A page set is expensive so check if already on desired page. |
|
4126 * If not, set to the page with the PHY status registers. |
|
4127 */ |
|
4128 hw->phy.addr = 1; |
|
4129 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
4130 &phy_data); |
|
4131 if (ret_val) |
|
4132 goto release; |
|
4133 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
|
4134 ret_val = hw->phy.ops.set_page(hw, |
|
4135 HV_STATS_PAGE << IGP_PAGE_SHIFT); |
|
4136 if (ret_val) |
|
4137 goto release; |
|
4138 } |
|
4139 |
|
4140 /* Single Collision Count */ |
|
4141 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
|
4142 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); |
|
4143 if (!ret_val) |
|
4144 adapter->stats.scc += phy_data; |
|
4145 |
|
4146 /* Excessive Collision Count */ |
|
4147 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
|
4148 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); |
|
4149 if (!ret_val) |
|
4150 adapter->stats.ecol += phy_data; |
|
4151 |
|
4152 /* Multiple Collision Count */ |
|
4153 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
|
4154 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); |
|
4155 if (!ret_val) |
|
4156 adapter->stats.mcc += phy_data; |
|
4157 |
|
4158 /* Late Collision Count */ |
|
4159 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
|
4160 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); |
|
4161 if (!ret_val) |
|
4162 adapter->stats.latecol += phy_data; |
|
4163 |
|
4164 /* Collision Count - also used for adaptive IFS */ |
|
4165 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
|
4166 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); |
|
4167 if (!ret_val) |
|
4168 hw->mac.collision_delta = phy_data; |
|
4169 |
|
4170 /* Defer Count */ |
|
4171 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
|
4172 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); |
|
4173 if (!ret_val) |
|
4174 adapter->stats.dc += phy_data; |
|
4175 |
|
4176 /* Transmit with no CRS */ |
|
4177 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
|
4178 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); |
|
4179 if (!ret_val) |
|
4180 adapter->stats.tncrs += phy_data; |
|
4181 |
|
4182 release: |
|
4183 hw->phy.ops.release(hw); |
|
4184 } |
|
4185 |
|
4186 /** |
|
4187 * e1000e_update_stats - Update the board statistics counters |
|
4188 * @adapter: board private structure |
|
4189 **/ |
|
4190 static void e1000e_update_stats(struct e1000_adapter *adapter) |
|
4191 { |
|
4192 struct net_device *netdev = adapter->netdev; |
|
4193 struct e1000_hw *hw = &adapter->hw; |
|
4194 struct pci_dev *pdev = adapter->pdev; |
|
4195 |
|
4196 /* |
|
4197 * Prevent stats update while adapter is being reset, or if the pci |
|
4198 * connection is down. |
|
4199 */ |
|
4200 if (adapter->link_speed == 0) |
|
4201 return; |
|
4202 if (pci_channel_offline(pdev)) |
|
4203 return; |
|
4204 |
|
4205 adapter->stats.crcerrs += er32(CRCERRS); |
|
4206 adapter->stats.gprc += er32(GPRC); |
|
4207 adapter->stats.gorc += er32(GORCL); |
|
4208 er32(GORCH); /* Clear gorc */ |
|
4209 adapter->stats.bprc += er32(BPRC); |
|
4210 adapter->stats.mprc += er32(MPRC); |
|
4211 adapter->stats.roc += er32(ROC); |
|
4212 |
|
4213 adapter->stats.mpc += er32(MPC); |
|
4214 |
|
4215 /* Half-duplex statistics */ |
|
4216 if (adapter->link_duplex == HALF_DUPLEX) { |
|
4217 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { |
|
4218 e1000e_update_phy_stats(adapter); |
|
4219 } else { |
|
4220 adapter->stats.scc += er32(SCC); |
|
4221 adapter->stats.ecol += er32(ECOL); |
|
4222 adapter->stats.mcc += er32(MCC); |
|
4223 adapter->stats.latecol += er32(LATECOL); |
|
4224 adapter->stats.dc += er32(DC); |
|
4225 |
|
4226 hw->mac.collision_delta = er32(COLC); |
|
4227 |
|
4228 if ((hw->mac.type != e1000_82574) && |
|
4229 (hw->mac.type != e1000_82583)) |
|
4230 adapter->stats.tncrs += er32(TNCRS); |
|
4231 } |
|
4232 adapter->stats.colc += hw->mac.collision_delta; |
|
4233 } |
|
4234 |
|
4235 adapter->stats.xonrxc += er32(XONRXC); |
|
4236 adapter->stats.xontxc += er32(XONTXC); |
|
4237 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
4238 adapter->stats.xofftxc += er32(XOFFTXC); |
|
4239 adapter->stats.gptc += er32(GPTC); |
|
4240 adapter->stats.gotc += er32(GOTCL); |
|
4241 er32(GOTCH); /* Clear gotc */ |
|
4242 adapter->stats.rnbc += er32(RNBC); |
|
4243 adapter->stats.ruc += er32(RUC); |
|
4244 |
|
4245 adapter->stats.mptc += er32(MPTC); |
|
4246 adapter->stats.bptc += er32(BPTC); |
|
4247 |
|
4248 /* used for adaptive IFS */ |
|
4249 |
|
4250 hw->mac.tx_packet_delta = er32(TPT); |
|
4251 adapter->stats.tpt += hw->mac.tx_packet_delta; |
|
4252 |
|
4253 adapter->stats.algnerrc += er32(ALGNERRC); |
|
4254 adapter->stats.rxerrc += er32(RXERRC); |
|
4255 adapter->stats.cexterr += er32(CEXTERR); |
|
4256 adapter->stats.tsctc += er32(TSCTC); |
|
4257 adapter->stats.tsctfc += er32(TSCTFC); |
|
4258 |
|
4259 /* Fill out the OS statistics structure */ |
|
4260 netdev->stats.multicast = adapter->stats.mprc; |
|
4261 netdev->stats.collisions = adapter->stats.colc; |
|
4262 |
|
4263 /* Rx Errors */ |
|
4264 |
|
4265 /* |
|
4266 * RLEC on some newer hardware can be incorrect so build |
|
4267 * our own version based on RUC and ROC |
|
4268 */ |
|
4269 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
4270 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
4271 adapter->stats.ruc + adapter->stats.roc + |
|
4272 adapter->stats.cexterr; |
|
4273 netdev->stats.rx_length_errors = adapter->stats.ruc + |
|
4274 adapter->stats.roc; |
|
4275 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
4276 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
4277 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
4278 |
|
4279 /* Tx Errors */ |
|
4280 netdev->stats.tx_errors = adapter->stats.ecol + |
|
4281 adapter->stats.latecol; |
|
4282 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
4283 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
4284 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
4285 |
|
4286 /* Tx Dropped needs to be maintained elsewhere */ |
|
4287 |
|
4288 /* Management Stats */ |
|
4289 adapter->stats.mgptc += er32(MGTPTC); |
|
4290 adapter->stats.mgprc += er32(MGTPRC); |
|
4291 adapter->stats.mgpdc += er32(MGTPDC); |
|
4292 } |
|
4293 |
|
4294 /** |
|
4295 * e1000_phy_read_status - Update the PHY register status snapshot |
|
4296 * @adapter: board private structure |
|
4297 **/ |
|
4298 static void e1000_phy_read_status(struct e1000_adapter *adapter) |
|
4299 { |
|
4300 struct e1000_hw *hw = &adapter->hw; |
|
4301 struct e1000_phy_regs *phy = &adapter->phy_regs; |
|
4302 |
|
4303 if ((er32(STATUS) & E1000_STATUS_LU) && |
|
4304 (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
|
4305 int ret_val; |
|
4306 |
|
4307 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); |
|
4308 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); |
|
4309 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); |
|
4310 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); |
|
4311 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); |
|
4312 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); |
|
4313 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); |
|
4314 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); |
|
4315 if (ret_val) |
|
4316 e_warn("Error reading PHY register\n"); |
|
4317 } else { |
|
4318 /* |
|
4319 * Do not read PHY registers if link is not up |
|
4320 * Set values to typical power-on defaults |
|
4321 */ |
|
4322 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); |
|
4323 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | |
|
4324 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | |
|
4325 BMSR_ERCAP); |
|
4326 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | |
|
4327 ADVERTISE_ALL | ADVERTISE_CSMA); |
|
4328 phy->lpa = 0; |
|
4329 phy->expansion = EXPANSION_ENABLENPAGE; |
|
4330 phy->ctrl1000 = ADVERTISE_1000FULL; |
|
4331 phy->stat1000 = 0; |
|
4332 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); |
|
4333 } |
|
4334 } |
|
4335 |
|
4336 static void e1000_print_link_info(struct e1000_adapter *adapter) |
|
4337 { |
|
4338 struct e1000_hw *hw = &adapter->hw; |
|
4339 u32 ctrl = er32(CTRL); |
|
4340 |
|
4341 /* Link status message must follow this format for user tools */ |
|
4342 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", |
|
4343 adapter->netdev->name, |
|
4344 adapter->link_speed, |
|
4345 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half", |
|
4346 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" : |
|
4347 (ctrl & E1000_CTRL_RFCE) ? "Rx" : |
|
4348 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"); |
|
4349 } |
|
4350 |
|
4351 static bool e1000e_has_link(struct e1000_adapter *adapter) |
|
4352 { |
|
4353 struct e1000_hw *hw = &adapter->hw; |
|
4354 bool link_active = false; |
|
4355 s32 ret_val = 0; |
|
4356 |
|
4357 /* |
|
4358 * get_link_status is set on LSC (link status) interrupt or |
|
4359 * Rx sequence error interrupt. get_link_status will stay |
|
4360 * false until the check_for_link establishes link |
|
4361 * for copper adapters ONLY |
|
4362 */ |
|
4363 switch (hw->phy.media_type) { |
|
4364 case e1000_media_type_copper: |
|
4365 if (hw->mac.get_link_status) { |
|
4366 ret_val = hw->mac.ops.check_for_link(hw); |
|
4367 link_active = !hw->mac.get_link_status; |
|
4368 } else { |
|
4369 link_active = true; |
|
4370 } |
|
4371 break; |
|
4372 case e1000_media_type_fiber: |
|
4373 ret_val = hw->mac.ops.check_for_link(hw); |
|
4374 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
4375 break; |
|
4376 case e1000_media_type_internal_serdes: |
|
4377 ret_val = hw->mac.ops.check_for_link(hw); |
|
4378 link_active = adapter->hw.mac.serdes_has_link; |
|
4379 break; |
|
4380 default: |
|
4381 case e1000_media_type_unknown: |
|
4382 break; |
|
4383 } |
|
4384 |
|
4385 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && |
|
4386 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
4387 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ |
|
4388 e_info("Gigabit has been disabled, downgrading speed\n"); |
|
4389 } |
|
4390 |
|
4391 return link_active; |
|
4392 } |
|
4393 |
|
4394 static void e1000e_enable_receives(struct e1000_adapter *adapter) |
|
4395 { |
|
4396 /* make sure the receive unit is started */ |
|
4397 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4398 (adapter->flags & FLAG_RX_RESTART_NOW)) { |
|
4399 struct e1000_hw *hw = &adapter->hw; |
|
4400 u32 rctl = er32(RCTL); |
|
4401 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
4402 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
4403 } |
|
4404 } |
|
4405 |
|
4406 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
|
4407 { |
|
4408 struct e1000_hw *hw = &adapter->hw; |
|
4409 |
|
4410 /* |
|
4411 * With 82574 controllers, PHY needs to be checked periodically |
|
4412 * for hung state and reset, if two calls return true |
|
4413 */ |
|
4414 if (e1000_check_phy_82574(hw)) |
|
4415 adapter->phy_hang_count++; |
|
4416 else |
|
4417 adapter->phy_hang_count = 0; |
|
4418 |
|
4419 if (adapter->phy_hang_count > 1) { |
|
4420 adapter->phy_hang_count = 0; |
|
4421 schedule_work(&adapter->reset_task); |
|
4422 } |
|
4423 } |
|
4424 |
|
4425 /** |
|
4426 * e1000_watchdog - Timer Call-back |
|
4427 * @data: pointer to adapter cast into an unsigned long |
|
4428 **/ |
|
4429 static void e1000_watchdog(unsigned long data) |
|
4430 { |
|
4431 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4432 |
|
4433 /* Do the rest outside of interrupt context */ |
|
4434 schedule_work(&adapter->watchdog_task); |
|
4435 |
|
4436 /* TODO: make this use queue_delayed_work() */ |
|
4437 } |
|
4438 |
|
4439 static void e1000_watchdog_task(struct work_struct *work) |
|
4440 { |
|
4441 struct e1000_adapter *adapter = container_of(work, |
|
4442 struct e1000_adapter, watchdog_task); |
|
4443 struct net_device *netdev = adapter->netdev; |
|
4444 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
4445 struct e1000_phy_info *phy = &adapter->hw.phy; |
|
4446 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4447 struct e1000_hw *hw = &adapter->hw; |
|
4448 u32 link, tctl; |
|
4449 |
|
4450 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4451 return; |
|
4452 |
|
4453 link = e1000e_has_link(adapter); |
|
4454 if ((netif_carrier_ok(netdev)) && link) { |
|
4455 /* Cancel scheduled suspend requests. */ |
|
4456 pm_runtime_resume(netdev->dev.parent); |
|
4457 |
|
4458 e1000e_enable_receives(adapter); |
|
4459 goto link_up; |
|
4460 } |
|
4461 |
|
4462 if ((e1000e_enable_tx_pkt_filtering(hw)) && |
|
4463 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) |
|
4464 e1000_update_mng_vlan(adapter); |
|
4465 |
|
4466 if (link) { |
|
4467 if (!netif_carrier_ok(netdev)) { |
|
4468 bool txb2b = true; |
|
4469 |
|
4470 /* Cancel scheduled suspend requests. */ |
|
4471 pm_runtime_resume(netdev->dev.parent); |
|
4472 |
|
4473 /* update snapshot of PHY registers on LSC */ |
|
4474 e1000_phy_read_status(adapter); |
|
4475 mac->ops.get_link_up_info(&adapter->hw, |
|
4476 &adapter->link_speed, |
|
4477 &adapter->link_duplex); |
|
4478 e1000_print_link_info(adapter); |
|
4479 /* |
|
4480 * On supported PHYs, check for duplex mismatch only |
|
4481 * if link has autonegotiated at 10/100 half |
|
4482 */ |
|
4483 if ((hw->phy.type == e1000_phy_igp_3 || |
|
4484 hw->phy.type == e1000_phy_bm) && |
|
4485 (hw->mac.autoneg == true) && |
|
4486 (adapter->link_speed == SPEED_10 || |
|
4487 adapter->link_speed == SPEED_100) && |
|
4488 (adapter->link_duplex == HALF_DUPLEX)) { |
|
4489 u16 autoneg_exp; |
|
4490 |
|
4491 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); |
|
4492 |
|
4493 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) |
|
4494 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n"); |
|
4495 } |
|
4496 |
|
4497 /* adjust timeout factor according to speed/duplex */ |
|
4498 adapter->tx_timeout_factor = 1; |
|
4499 switch (adapter->link_speed) { |
|
4500 case SPEED_10: |
|
4501 txb2b = false; |
|
4502 adapter->tx_timeout_factor = 16; |
|
4503 break; |
|
4504 case SPEED_100: |
|
4505 txb2b = false; |
|
4506 adapter->tx_timeout_factor = 10; |
|
4507 break; |
|
4508 } |
|
4509 |
|
4510 /* |
|
4511 * workaround: re-program speed mode bit after |
|
4512 * link-up event |
|
4513 */ |
|
4514 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
|
4515 !txb2b) { |
|
4516 u32 tarc0; |
|
4517 tarc0 = er32(TARC(0)); |
|
4518 tarc0 &= ~SPEED_MODE_BIT; |
|
4519 ew32(TARC(0), tarc0); |
|
4520 } |
|
4521 |
|
4522 /* |
|
4523 * disable TSO for pcie and 10/100 speeds, to avoid |
|
4524 * some hardware issues |
|
4525 */ |
|
4526 if (!(adapter->flags & FLAG_TSO_FORCE)) { |
|
4527 switch (adapter->link_speed) { |
|
4528 case SPEED_10: |
|
4529 case SPEED_100: |
|
4530 e_info("10/100 speed: disabling TSO\n"); |
|
4531 netdev->features &= ~NETIF_F_TSO; |
|
4532 netdev->features &= ~NETIF_F_TSO6; |
|
4533 break; |
|
4534 case SPEED_1000: |
|
4535 netdev->features |= NETIF_F_TSO; |
|
4536 netdev->features |= NETIF_F_TSO6; |
|
4537 break; |
|
4538 default: |
|
4539 /* oops */ |
|
4540 break; |
|
4541 } |
|
4542 } |
|
4543 |
|
4544 /* |
|
4545 * enable transmits in the hardware, need to do this |
|
4546 * after setting TARC(0) |
|
4547 */ |
|
4548 tctl = er32(TCTL); |
|
4549 tctl |= E1000_TCTL_EN; |
|
4550 ew32(TCTL, tctl); |
|
4551 |
|
4552 /* |
|
4553 * Perform any post-link-up configuration before |
|
4554 * reporting link up. |
|
4555 */ |
|
4556 if (phy->ops.cfg_on_link_up) |
|
4557 phy->ops.cfg_on_link_up(hw); |
|
4558 |
|
4559 netif_carrier_on(netdev); |
|
4560 |
|
4561 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
4562 mod_timer(&adapter->phy_info_timer, |
|
4563 round_jiffies(jiffies + 2 * HZ)); |
|
4564 } |
|
4565 } else { |
|
4566 if (netif_carrier_ok(netdev)) { |
|
4567 adapter->link_speed = 0; |
|
4568 adapter->link_duplex = 0; |
|
4569 /* Link status message must follow this format */ |
|
4570 printk(KERN_INFO "e1000e: %s NIC Link is Down\n", |
|
4571 adapter->netdev->name); |
|
4572 netif_carrier_off(netdev); |
|
4573 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
4574 mod_timer(&adapter->phy_info_timer, |
|
4575 round_jiffies(jiffies + 2 * HZ)); |
|
4576 |
|
4577 if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
|
4578 schedule_work(&adapter->reset_task); |
|
4579 else |
|
4580 pm_schedule_suspend(netdev->dev.parent, |
|
4581 LINK_TIMEOUT); |
|
4582 } |
|
4583 } |
|
4584 |
|
4585 link_up: |
|
4586 spin_lock(&adapter->stats64_lock); |
|
4587 e1000e_update_stats(adapter); |
|
4588 |
|
4589 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
4590 adapter->tpt_old = adapter->stats.tpt; |
|
4591 mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
4592 adapter->colc_old = adapter->stats.colc; |
|
4593 |
|
4594 adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
|
4595 adapter->gorc_old = adapter->stats.gorc; |
|
4596 adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
|
4597 adapter->gotc_old = adapter->stats.gotc; |
|
4598 spin_unlock(&adapter->stats64_lock); |
|
4599 |
|
4600 e1000e_update_adaptive(&adapter->hw); |
|
4601 |
|
4602 if (!netif_carrier_ok(netdev) && |
|
4603 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) { |
|
4604 /* |
|
4605 * We've lost link, so the controller stops DMA, |
|
4606 * but we've got queued Tx work that's never going |
|
4607 * to get done, so reset controller to flush Tx. |
|
4608 * (Do the reset outside of interrupt context). |
|
4609 */ |
|
4610 schedule_work(&adapter->reset_task); |
|
4611 /* return immediately since reset is imminent */ |
|
4612 return; |
|
4613 } |
|
4614 |
|
4615 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
4616 if (adapter->itr_setting == 4) { |
|
4617 /* |
|
4618 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
4619 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
4620 * everyone else is between 2000-8000. |
|
4621 */ |
|
4622 u32 goc = (adapter->gotc + adapter->gorc) / 10000; |
|
4623 u32 dif = (adapter->gotc > adapter->gorc ? |
|
4624 adapter->gotc - adapter->gorc : |
|
4625 adapter->gorc - adapter->gotc) / 10000; |
|
4626 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
4627 |
|
4628 e1000e_write_itr(adapter, itr); |
|
4629 } |
|
4630 |
|
4631 /* Cause software interrupt to ensure Rx ring is cleaned */ |
|
4632 if (adapter->msix_entries) |
|
4633 ew32(ICS, adapter->rx_ring->ims_val); |
|
4634 else |
|
4635 ew32(ICS, E1000_ICS_RXDMT0); |
|
4636 |
|
4637 /* flush pending descriptors to memory before detecting Tx hang */ |
|
4638 e1000e_flush_descriptors(adapter); |
|
4639 |
|
4640 /* Force detection of hung controller every watchdog period */ |
|
4641 adapter->detect_tx_hung = true; |
|
4642 |
|
4643 /* |
|
4644 * With 82571 controllers, LAA may be overwritten due to controller |
|
4645 * reset from the other port. Set the appropriate LAA in RAR[0] |
|
4646 */ |
|
4647 if (e1000e_get_laa_state_82571(hw)) |
|
4648 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0); |
|
4649 |
|
4650 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
|
4651 e1000e_check_82574_phy_workaround(adapter); |
|
4652 |
|
4653 /* Reset the timer */ |
|
4654 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
4655 mod_timer(&adapter->watchdog_timer, |
|
4656 round_jiffies(jiffies + 2 * HZ)); |
|
4657 } |
|
4658 |
|
4659 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
4660 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
4661 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
4662 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
4663 #define E1000_TX_FLAGS_NO_FCS 0x00000010 |
|
4664 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
4665 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
4666 |
|
4667 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
4668 { |
|
4669 struct e1000_context_desc *context_desc; |
|
4670 struct e1000_buffer *buffer_info; |
|
4671 unsigned int i; |
|
4672 u32 cmd_length = 0; |
|
4673 u16 ipcse = 0, tucse, mss; |
|
4674 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
4675 |
|
4676 if (!skb_is_gso(skb)) |
|
4677 return 0; |
|
4678 |
|
4679 if (skb_header_cloned(skb)) { |
|
4680 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
4681 |
|
4682 if (err) |
|
4683 return err; |
|
4684 } |
|
4685 |
|
4686 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
4687 mss = skb_shinfo(skb)->gso_size; |
|
4688 if (skb->protocol == htons(ETH_P_IP)) { |
|
4689 struct iphdr *iph = ip_hdr(skb); |
|
4690 iph->tot_len = 0; |
|
4691 iph->check = 0; |
|
4692 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, |
|
4693 0, IPPROTO_TCP, 0); |
|
4694 cmd_length = E1000_TXD_CMD_IP; |
|
4695 ipcse = skb_transport_offset(skb) - 1; |
|
4696 } else if (skb_is_gso_v6(skb)) { |
|
4697 ipv6_hdr(skb)->payload_len = 0; |
|
4698 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
4699 &ipv6_hdr(skb)->daddr, |
|
4700 0, IPPROTO_TCP, 0); |
|
4701 ipcse = 0; |
|
4702 } |
|
4703 ipcss = skb_network_offset(skb); |
|
4704 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
4705 tucss = skb_transport_offset(skb); |
|
4706 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
4707 tucse = 0; |
|
4708 |
|
4709 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
4710 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
4711 |
|
4712 i = tx_ring->next_to_use; |
|
4713 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4714 buffer_info = &tx_ring->buffer_info[i]; |
|
4715 |
|
4716 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
4717 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
4718 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
4719 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
4720 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
4721 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
4722 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
4723 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
4724 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
4725 |
|
4726 buffer_info->time_stamp = jiffies; |
|
4727 buffer_info->next_to_watch = i; |
|
4728 |
|
4729 i++; |
|
4730 if (i == tx_ring->count) |
|
4731 i = 0; |
|
4732 tx_ring->next_to_use = i; |
|
4733 |
|
4734 return 1; |
|
4735 } |
|
4736 |
|
4737 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
4738 { |
|
4739 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4740 struct e1000_context_desc *context_desc; |
|
4741 struct e1000_buffer *buffer_info; |
|
4742 unsigned int i; |
|
4743 u8 css; |
|
4744 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
4745 __be16 protocol; |
|
4746 |
|
4747 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
4748 return 0; |
|
4749 |
|
4750 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
|
4751 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; |
|
4752 else |
|
4753 protocol = skb->protocol; |
|
4754 |
|
4755 switch (protocol) { |
|
4756 case cpu_to_be16(ETH_P_IP): |
|
4757 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
4758 cmd_len |= E1000_TXD_CMD_TCP; |
|
4759 break; |
|
4760 case cpu_to_be16(ETH_P_IPV6): |
|
4761 /* XXX not handling all IPV6 headers */ |
|
4762 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
4763 cmd_len |= E1000_TXD_CMD_TCP; |
|
4764 break; |
|
4765 default: |
|
4766 if (unlikely(net_ratelimit())) |
|
4767 e_warn("checksum_partial proto=%x!\n", |
|
4768 be16_to_cpu(protocol)); |
|
4769 break; |
|
4770 } |
|
4771 |
|
4772 css = skb_checksum_start_offset(skb); |
|
4773 |
|
4774 i = tx_ring->next_to_use; |
|
4775 buffer_info = &tx_ring->buffer_info[i]; |
|
4776 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4777 |
|
4778 context_desc->lower_setup.ip_config = 0; |
|
4779 context_desc->upper_setup.tcp_fields.tucss = css; |
|
4780 context_desc->upper_setup.tcp_fields.tucso = |
|
4781 css + skb->csum_offset; |
|
4782 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
4783 context_desc->tcp_seg_setup.data = 0; |
|
4784 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
4785 |
|
4786 buffer_info->time_stamp = jiffies; |
|
4787 buffer_info->next_to_watch = i; |
|
4788 |
|
4789 i++; |
|
4790 if (i == tx_ring->count) |
|
4791 i = 0; |
|
4792 tx_ring->next_to_use = i; |
|
4793 |
|
4794 return 1; |
|
4795 } |
|
4796 |
|
4797 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb, |
|
4798 unsigned int first, unsigned int max_per_txd, |
|
4799 unsigned int nr_frags) |
|
4800 { |
|
4801 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4802 struct pci_dev *pdev = adapter->pdev; |
|
4803 struct e1000_buffer *buffer_info; |
|
4804 unsigned int len = skb_headlen(skb); |
|
4805 unsigned int offset = 0, size, count = 0, i; |
|
4806 unsigned int f, bytecount, segs; |
|
4807 |
|
4808 i = tx_ring->next_to_use; |
|
4809 |
|
4810 while (len) { |
|
4811 buffer_info = &tx_ring->buffer_info[i]; |
|
4812 size = min(len, max_per_txd); |
|
4813 |
|
4814 buffer_info->length = size; |
|
4815 buffer_info->time_stamp = jiffies; |
|
4816 buffer_info->next_to_watch = i; |
|
4817 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4818 skb->data + offset, |
|
4819 size, DMA_TO_DEVICE); |
|
4820 buffer_info->mapped_as_page = false; |
|
4821 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4822 goto dma_error; |
|
4823 |
|
4824 len -= size; |
|
4825 offset += size; |
|
4826 count++; |
|
4827 |
|
4828 if (len) { |
|
4829 i++; |
|
4830 if (i == tx_ring->count) |
|
4831 i = 0; |
|
4832 } |
|
4833 } |
|
4834 |
|
4835 for (f = 0; f < nr_frags; f++) { |
|
4836 const struct skb_frag_struct *frag; |
|
4837 |
|
4838 frag = &skb_shinfo(skb)->frags[f]; |
|
4839 len = skb_frag_size(frag); |
|
4840 offset = 0; |
|
4841 |
|
4842 while (len) { |
|
4843 i++; |
|
4844 if (i == tx_ring->count) |
|
4845 i = 0; |
|
4846 |
|
4847 buffer_info = &tx_ring->buffer_info[i]; |
|
4848 size = min(len, max_per_txd); |
|
4849 |
|
4850 buffer_info->length = size; |
|
4851 buffer_info->time_stamp = jiffies; |
|
4852 buffer_info->next_to_watch = i; |
|
4853 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
|
4854 offset, size, DMA_TO_DEVICE); |
|
4855 buffer_info->mapped_as_page = true; |
|
4856 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4857 goto dma_error; |
|
4858 |
|
4859 len -= size; |
|
4860 offset += size; |
|
4861 count++; |
|
4862 } |
|
4863 } |
|
4864 |
|
4865 segs = skb_shinfo(skb)->gso_segs ? : 1; |
|
4866 /* multiply data chunks by size of headers */ |
|
4867 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; |
|
4868 |
|
4869 tx_ring->buffer_info[i].skb = skb; |
|
4870 tx_ring->buffer_info[i].segs = segs; |
|
4871 tx_ring->buffer_info[i].bytecount = bytecount; |
|
4872 tx_ring->buffer_info[first].next_to_watch = i; |
|
4873 |
|
4874 return count; |
|
4875 |
|
4876 dma_error: |
|
4877 dev_err(&pdev->dev, "Tx DMA map failed\n"); |
|
4878 buffer_info->dma = 0; |
|
4879 if (count) |
|
4880 count--; |
|
4881 |
|
4882 while (count--) { |
|
4883 if (i == 0) |
|
4884 i += tx_ring->count; |
|
4885 i--; |
|
4886 buffer_info = &tx_ring->buffer_info[i]; |
|
4887 e1000_put_txbuf(tx_ring, buffer_info); |
|
4888 } |
|
4889 |
|
4890 return 0; |
|
4891 } |
|
4892 |
|
4893 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count) |
|
4894 { |
|
4895 struct e1000_adapter *adapter = tx_ring->adapter; |
|
4896 struct e1000_tx_desc *tx_desc = NULL; |
|
4897 struct e1000_buffer *buffer_info; |
|
4898 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
4899 unsigned int i; |
|
4900 |
|
4901 if (tx_flags & E1000_TX_FLAGS_TSO) { |
|
4902 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
4903 E1000_TXD_CMD_TSE; |
|
4904 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4905 |
|
4906 if (tx_flags & E1000_TX_FLAGS_IPV4) |
|
4907 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
4908 } |
|
4909 |
|
4910 if (tx_flags & E1000_TX_FLAGS_CSUM) { |
|
4911 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
4912 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4913 } |
|
4914 |
|
4915 if (tx_flags & E1000_TX_FLAGS_VLAN) { |
|
4916 txd_lower |= E1000_TXD_CMD_VLE; |
|
4917 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
4918 } |
|
4919 |
|
4920 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
4921 txd_lower &= ~(E1000_TXD_CMD_IFCS); |
|
4922 |
|
4923 i = tx_ring->next_to_use; |
|
4924 |
|
4925 do { |
|
4926 buffer_info = &tx_ring->buffer_info[i]; |
|
4927 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
4928 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4929 tx_desc->lower.data = |
|
4930 cpu_to_le32(txd_lower | buffer_info->length); |
|
4931 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
4932 |
|
4933 i++; |
|
4934 if (i == tx_ring->count) |
|
4935 i = 0; |
|
4936 } while (--count > 0); |
|
4937 |
|
4938 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
4939 |
|
4940 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ |
|
4941 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
4942 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); |
|
4943 |
|
4944 /* |
|
4945 * Force memory writes to complete before letting h/w |
|
4946 * know there are new descriptors to fetch. (Only |
|
4947 * applicable for weak-ordered memory model archs, |
|
4948 * such as IA-64). |
|
4949 */ |
|
4950 wmb(); |
|
4951 |
|
4952 tx_ring->next_to_use = i; |
|
4953 |
|
4954 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
4955 e1000e_update_tdt_wa(tx_ring, i); |
|
4956 else |
|
4957 writel(i, tx_ring->tail); |
|
4958 |
|
4959 /* |
|
4960 * we need this if more than one processor can write to our tail |
|
4961 * at a time, it synchronizes IO on IA64/Altix systems |
|
4962 */ |
|
4963 mmiowb(); |
|
4964 } |
|
4965 |
|
4966 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
4967 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
4968 struct sk_buff *skb) |
|
4969 { |
|
4970 struct e1000_hw *hw = &adapter->hw; |
|
4971 u16 length, offset; |
|
4972 |
|
4973 if (vlan_tx_tag_present(skb)) { |
|
4974 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
4975 (adapter->hw.mng_cookie.status & |
|
4976 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
|
4977 return 0; |
|
4978 } |
|
4979 |
|
4980 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) |
|
4981 return 0; |
|
4982 |
|
4983 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) |
|
4984 return 0; |
|
4985 |
|
4986 { |
|
4987 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); |
|
4988 struct udphdr *udp; |
|
4989 |
|
4990 if (ip->protocol != IPPROTO_UDP) |
|
4991 return 0; |
|
4992 |
|
4993 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
|
4994 if (ntohs(udp->dest) != 67) |
|
4995 return 0; |
|
4996 |
|
4997 offset = (u8 *)udp + 8 - skb->data; |
|
4998 length = skb->len - offset; |
|
4999 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); |
|
5000 } |
|
5001 |
|
5002 return 0; |
|
5003 } |
|
5004 |
|
5005 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5006 { |
|
5007 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5008 |
|
5009 netif_stop_queue(adapter->netdev); |
|
5010 /* |
|
5011 * Herbert's original patch had: |
|
5012 * smp_mb__after_netif_stop_queue(); |
|
5013 * but since that doesn't exist yet, just open code it. |
|
5014 */ |
|
5015 smp_mb(); |
|
5016 |
|
5017 /* |
|
5018 * We need to check again in a case another CPU has just |
|
5019 * made room available. |
|
5020 */ |
|
5021 if (e1000_desc_unused(tx_ring) < size) |
|
5022 return -EBUSY; |
|
5023 |
|
5024 /* A reprieve! */ |
|
5025 netif_start_queue(adapter->netdev); |
|
5026 ++adapter->restart_queue; |
|
5027 return 0; |
|
5028 } |
|
5029 |
|
5030 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5031 { |
|
5032 BUG_ON(size > tx_ring->count); |
|
5033 |
|
5034 if (e1000_desc_unused(tx_ring) >= size) |
|
5035 return 0; |
|
5036 return __e1000_maybe_stop_tx(tx_ring, size); |
|
5037 } |
|
5038 |
|
5039 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
5040 struct net_device *netdev) |
|
5041 { |
|
5042 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5043 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
5044 unsigned int first; |
|
5045 unsigned int tx_flags = 0; |
|
5046 unsigned int len = skb_headlen(skb); |
|
5047 unsigned int nr_frags; |
|
5048 unsigned int mss; |
|
5049 int count = 0; |
|
5050 int tso; |
|
5051 unsigned int f; |
|
5052 |
|
5053 if (test_bit(__E1000_DOWN, &adapter->state)) { |
|
5054 dev_kfree_skb_any(skb); |
|
5055 return NETDEV_TX_OK; |
|
5056 } |
|
5057 |
|
5058 if (skb->len <= 0) { |
|
5059 dev_kfree_skb_any(skb); |
|
5060 return NETDEV_TX_OK; |
|
5061 } |
|
5062 |
|
5063 mss = skb_shinfo(skb)->gso_size; |
|
5064 if (mss) { |
|
5065 u8 hdr_len; |
|
5066 |
|
5067 /* |
|
5068 * TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
5069 * points to just header, pull a few bytes of payload from |
|
5070 * frags into skb->data |
|
5071 */ |
|
5072 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
5073 /* |
|
5074 * we do this workaround for ES2LAN, but it is un-necessary, |
|
5075 * avoiding it could save a lot of cycles |
|
5076 */ |
|
5077 if (skb->data_len && (hdr_len == len)) { |
|
5078 unsigned int pull_size; |
|
5079 |
|
5080 pull_size = min_t(unsigned int, 4, skb->data_len); |
|
5081 if (!__pskb_pull_tail(skb, pull_size)) { |
|
5082 e_err("__pskb_pull_tail failed.\n"); |
|
5083 dev_kfree_skb_any(skb); |
|
5084 return NETDEV_TX_OK; |
|
5085 } |
|
5086 len = skb_headlen(skb); |
|
5087 } |
|
5088 } |
|
5089 |
|
5090 /* reserve a descriptor for the offload context */ |
|
5091 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
5092 count++; |
|
5093 count++; |
|
5094 |
|
5095 count += DIV_ROUND_UP(len, adapter->tx_fifo_limit); |
|
5096 |
|
5097 nr_frags = skb_shinfo(skb)->nr_frags; |
|
5098 for (f = 0; f < nr_frags; f++) |
|
5099 count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
|
5100 adapter->tx_fifo_limit); |
|
5101 |
|
5102 if (adapter->hw.mac.tx_pkt_filtering) |
|
5103 e1000_transfer_dhcp_info(adapter, skb); |
|
5104 |
|
5105 /* |
|
5106 * need: count + 2 desc gap to keep tail from touching |
|
5107 * head, otherwise try next time |
|
5108 */ |
|
5109 if (e1000_maybe_stop_tx(tx_ring, count + 2)) |
|
5110 return NETDEV_TX_BUSY; |
|
5111 |
|
5112 if (vlan_tx_tag_present(skb)) { |
|
5113 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
5114 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
5115 } |
|
5116 |
|
5117 first = tx_ring->next_to_use; |
|
5118 |
|
5119 tso = e1000_tso(tx_ring, skb); |
|
5120 if (tso < 0) { |
|
5121 dev_kfree_skb_any(skb); |
|
5122 return NETDEV_TX_OK; |
|
5123 } |
|
5124 |
|
5125 if (tso) |
|
5126 tx_flags |= E1000_TX_FLAGS_TSO; |
|
5127 else if (e1000_tx_csum(tx_ring, skb)) |
|
5128 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
5129 |
|
5130 /* |
|
5131 * Old method was to assume IPv4 packet by default if TSO was enabled. |
|
5132 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
5133 * no longer assume, we must. |
|
5134 */ |
|
5135 if (skb->protocol == htons(ETH_P_IP)) |
|
5136 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
5137 |
|
5138 if (unlikely(skb->no_fcs)) |
|
5139 tx_flags |= E1000_TX_FLAGS_NO_FCS; |
|
5140 |
|
5141 /* if count is 0 then mapping error has occurred */ |
|
5142 count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit, |
|
5143 nr_frags); |
|
5144 if (count) { |
|
5145 skb_tx_timestamp(skb); |
|
5146 |
|
5147 netdev_sent_queue(netdev, skb->len); |
|
5148 e1000_tx_queue(tx_ring, tx_flags, count); |
|
5149 /* Make sure there is space in the ring for the next send. */ |
|
5150 e1000_maybe_stop_tx(tx_ring, |
|
5151 (MAX_SKB_FRAGS * |
|
5152 DIV_ROUND_UP(PAGE_SIZE, |
|
5153 adapter->tx_fifo_limit) + 2)); |
|
5154 } else { |
|
5155 dev_kfree_skb_any(skb); |
|
5156 tx_ring->buffer_info[first].time_stamp = 0; |
|
5157 tx_ring->next_to_use = first; |
|
5158 } |
|
5159 |
|
5160 return NETDEV_TX_OK; |
|
5161 } |
|
5162 |
|
5163 /** |
|
5164 * e1000_tx_timeout - Respond to a Tx Hang |
|
5165 * @netdev: network interface device structure |
|
5166 **/ |
|
5167 static void e1000_tx_timeout(struct net_device *netdev) |
|
5168 { |
|
5169 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5170 |
|
5171 /* Do the reset outside of interrupt context */ |
|
5172 adapter->tx_timeout_count++; |
|
5173 schedule_work(&adapter->reset_task); |
|
5174 } |
|
5175 |
|
5176 static void e1000_reset_task(struct work_struct *work) |
|
5177 { |
|
5178 struct e1000_adapter *adapter; |
|
5179 adapter = container_of(work, struct e1000_adapter, reset_task); |
|
5180 |
|
5181 /* don't run the task if already down */ |
|
5182 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
5183 return; |
|
5184 |
|
5185 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
5186 (adapter->flags & FLAG_RX_RESTART_NOW))) { |
|
5187 e1000e_dump(adapter); |
|
5188 e_err("Reset adapter\n"); |
|
5189 } |
|
5190 e1000e_reinit_locked(adapter); |
|
5191 } |
|
5192 |
|
5193 /** |
|
5194 * e1000_get_stats64 - Get System Network Statistics |
|
5195 * @netdev: network interface device structure |
|
5196 * @stats: rtnl_link_stats64 pointer |
|
5197 * |
|
5198 * Returns the address of the device statistics structure. |
|
5199 **/ |
|
5200 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
|
5201 struct rtnl_link_stats64 *stats) |
|
5202 { |
|
5203 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5204 |
|
5205 memset(stats, 0, sizeof(struct rtnl_link_stats64)); |
|
5206 spin_lock(&adapter->stats64_lock); |
|
5207 e1000e_update_stats(adapter); |
|
5208 /* Fill out the OS statistics structure */ |
|
5209 stats->rx_bytes = adapter->stats.gorc; |
|
5210 stats->rx_packets = adapter->stats.gprc; |
|
5211 stats->tx_bytes = adapter->stats.gotc; |
|
5212 stats->tx_packets = adapter->stats.gptc; |
|
5213 stats->multicast = adapter->stats.mprc; |
|
5214 stats->collisions = adapter->stats.colc; |
|
5215 |
|
5216 /* Rx Errors */ |
|
5217 |
|
5218 /* |
|
5219 * RLEC on some newer hardware can be incorrect so build |
|
5220 * our own version based on RUC and ROC |
|
5221 */ |
|
5222 stats->rx_errors = adapter->stats.rxerrc + |
|
5223 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
5224 adapter->stats.ruc + adapter->stats.roc + |
|
5225 adapter->stats.cexterr; |
|
5226 stats->rx_length_errors = adapter->stats.ruc + |
|
5227 adapter->stats.roc; |
|
5228 stats->rx_crc_errors = adapter->stats.crcerrs; |
|
5229 stats->rx_frame_errors = adapter->stats.algnerrc; |
|
5230 stats->rx_missed_errors = adapter->stats.mpc; |
|
5231 |
|
5232 /* Tx Errors */ |
|
5233 stats->tx_errors = adapter->stats.ecol + |
|
5234 adapter->stats.latecol; |
|
5235 stats->tx_aborted_errors = adapter->stats.ecol; |
|
5236 stats->tx_window_errors = adapter->stats.latecol; |
|
5237 stats->tx_carrier_errors = adapter->stats.tncrs; |
|
5238 |
|
5239 /* Tx Dropped needs to be maintained elsewhere */ |
|
5240 |
|
5241 spin_unlock(&adapter->stats64_lock); |
|
5242 return stats; |
|
5243 } |
|
5244 |
|
5245 /** |
|
5246 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
5247 * @netdev: network interface device structure |
|
5248 * @new_mtu: new value for maximum frame size |
|
5249 * |
|
5250 * Returns 0 on success, negative on failure |
|
5251 **/ |
|
5252 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
5253 { |
|
5254 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5255 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
|
5256 |
|
5257 /* Jumbo frame support */ |
|
5258 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
|
5259 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { |
|
5260 e_err("Jumbo Frames not supported.\n"); |
|
5261 return -EINVAL; |
|
5262 } |
|
5263 |
|
5264 /* Supported frame sizes */ |
|
5265 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
|
5266 (max_frame > adapter->max_hw_frame_size)) { |
|
5267 e_err("Unsupported MTU setting\n"); |
|
5268 return -EINVAL; |
|
5269 } |
|
5270 |
|
5271 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */ |
|
5272 if ((adapter->hw.mac.type >= e1000_pch2lan) && |
|
5273 !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
|
5274 (new_mtu > ETH_DATA_LEN)) { |
|
5275 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n"); |
|
5276 return -EINVAL; |
|
5277 } |
|
5278 |
|
5279 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
5280 usleep_range(1000, 2000); |
|
5281 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
|
5282 adapter->max_frame_size = max_frame; |
|
5283 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
|
5284 netdev->mtu = new_mtu; |
|
5285 if (netif_running(netdev)) |
|
5286 e1000e_down(adapter); |
|
5287 |
|
5288 /* |
|
5289 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
5290 * means we reserve 2 more, this pushes us to allocate from the next |
|
5291 * larger slab size. |
|
5292 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
5293 * However with the new *_jumbo_rx* routines, jumbo receives will use |
|
5294 * fragmented skbs |
|
5295 */ |
|
5296 |
|
5297 if (max_frame <= 2048) |
|
5298 adapter->rx_buffer_len = 2048; |
|
5299 else |
|
5300 adapter->rx_buffer_len = 4096; |
|
5301 |
|
5302 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
5303 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
|
5304 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
|
5305 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
|
5306 + ETH_FCS_LEN; |
|
5307 |
|
5308 if (netif_running(netdev)) |
|
5309 e1000e_up(adapter); |
|
5310 else |
|
5311 e1000e_reset(adapter); |
|
5312 |
|
5313 clear_bit(__E1000_RESETTING, &adapter->state); |
|
5314 |
|
5315 return 0; |
|
5316 } |
|
5317 |
|
5318 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
5319 int cmd) |
|
5320 { |
|
5321 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5322 struct mii_ioctl_data *data = if_mii(ifr); |
|
5323 |
|
5324 if (adapter->hw.phy.media_type != e1000_media_type_copper) |
|
5325 return -EOPNOTSUPP; |
|
5326 |
|
5327 switch (cmd) { |
|
5328 case SIOCGMIIPHY: |
|
5329 data->phy_id = adapter->hw.phy.addr; |
|
5330 break; |
|
5331 case SIOCGMIIREG: |
|
5332 e1000_phy_read_status(adapter); |
|
5333 |
|
5334 switch (data->reg_num & 0x1F) { |
|
5335 case MII_BMCR: |
|
5336 data->val_out = adapter->phy_regs.bmcr; |
|
5337 break; |
|
5338 case MII_BMSR: |
|
5339 data->val_out = adapter->phy_regs.bmsr; |
|
5340 break; |
|
5341 case MII_PHYSID1: |
|
5342 data->val_out = (adapter->hw.phy.id >> 16); |
|
5343 break; |
|
5344 case MII_PHYSID2: |
|
5345 data->val_out = (adapter->hw.phy.id & 0xFFFF); |
|
5346 break; |
|
5347 case MII_ADVERTISE: |
|
5348 data->val_out = adapter->phy_regs.advertise; |
|
5349 break; |
|
5350 case MII_LPA: |
|
5351 data->val_out = adapter->phy_regs.lpa; |
|
5352 break; |
|
5353 case MII_EXPANSION: |
|
5354 data->val_out = adapter->phy_regs.expansion; |
|
5355 break; |
|
5356 case MII_CTRL1000: |
|
5357 data->val_out = adapter->phy_regs.ctrl1000; |
|
5358 break; |
|
5359 case MII_STAT1000: |
|
5360 data->val_out = adapter->phy_regs.stat1000; |
|
5361 break; |
|
5362 case MII_ESTATUS: |
|
5363 data->val_out = adapter->phy_regs.estatus; |
|
5364 break; |
|
5365 default: |
|
5366 return -EIO; |
|
5367 } |
|
5368 break; |
|
5369 case SIOCSMIIREG: |
|
5370 default: |
|
5371 return -EOPNOTSUPP; |
|
5372 } |
|
5373 return 0; |
|
5374 } |
|
5375 |
|
5376 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
5377 { |
|
5378 switch (cmd) { |
|
5379 case SIOCGMIIPHY: |
|
5380 case SIOCGMIIREG: |
|
5381 case SIOCSMIIREG: |
|
5382 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
5383 default: |
|
5384 return -EOPNOTSUPP; |
|
5385 } |
|
5386 } |
|
5387 |
|
5388 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
|
5389 { |
|
5390 struct e1000_hw *hw = &adapter->hw; |
|
5391 u32 i, mac_reg; |
|
5392 u16 phy_reg, wuc_enable; |
|
5393 int retval = 0; |
|
5394 |
|
5395 /* copy MAC RARs to PHY RARs */ |
|
5396 e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
|
5397 |
|
5398 retval = hw->phy.ops.acquire(hw); |
|
5399 if (retval) { |
|
5400 e_err("Could not acquire PHY\n"); |
|
5401 return retval; |
|
5402 } |
|
5403 |
|
5404 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ |
|
5405 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5406 if (retval) |
|
5407 goto release; |
|
5408 |
|
5409 /* copy MAC MTA to PHY MTA - only needed for pchlan */ |
|
5410 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
|
5411 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); |
|
5412 hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
|
5413 (u16)(mac_reg & 0xFFFF)); |
|
5414 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, |
|
5415 (u16)((mac_reg >> 16) & 0xFFFF)); |
|
5416 } |
|
5417 |
|
5418 /* configure PHY Rx Control register */ |
|
5419 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
|
5420 mac_reg = er32(RCTL); |
|
5421 if (mac_reg & E1000_RCTL_UPE) |
|
5422 phy_reg |= BM_RCTL_UPE; |
|
5423 if (mac_reg & E1000_RCTL_MPE) |
|
5424 phy_reg |= BM_RCTL_MPE; |
|
5425 phy_reg &= ~(BM_RCTL_MO_MASK); |
|
5426 if (mac_reg & E1000_RCTL_MO_3) |
|
5427 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) |
|
5428 << BM_RCTL_MO_SHIFT); |
|
5429 if (mac_reg & E1000_RCTL_BAM) |
|
5430 phy_reg |= BM_RCTL_BAM; |
|
5431 if (mac_reg & E1000_RCTL_PMCF) |
|
5432 phy_reg |= BM_RCTL_PMCF; |
|
5433 mac_reg = er32(CTRL); |
|
5434 if (mac_reg & E1000_CTRL_RFCE) |
|
5435 phy_reg |= BM_RCTL_RFCE; |
|
5436 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
|
5437 |
|
5438 /* enable PHY wakeup in MAC register */ |
|
5439 ew32(WUFC, wufc); |
|
5440 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); |
|
5441 |
|
5442 /* configure and enable PHY wakeup in PHY registers */ |
|
5443 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
|
5444 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); |
|
5445 |
|
5446 /* activate PHY wakeup */ |
|
5447 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
|
5448 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5449 if (retval) |
|
5450 e_err("Could not set PHY Host Wakeup bit\n"); |
|
5451 release: |
|
5452 hw->phy.ops.release(hw); |
|
5453 |
|
5454 return retval; |
|
5455 } |
|
5456 |
|
5457 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
|
5458 bool runtime) |
|
5459 { |
|
5460 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5461 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5462 struct e1000_hw *hw = &adapter->hw; |
|
5463 u32 ctrl, ctrl_ext, rctl, status; |
|
5464 /* Runtime suspend should only enable wakeup for link changes */ |
|
5465 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
|
5466 int retval = 0; |
|
5467 |
|
5468 netif_device_detach(netdev); |
|
5469 |
|
5470 if (netif_running(netdev)) { |
|
5471 int count = E1000_CHECK_RESET_COUNT; |
|
5472 |
|
5473 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
5474 usleep_range(10000, 20000); |
|
5475 |
|
5476 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
5477 e1000e_down(adapter); |
|
5478 e1000_free_irq(adapter); |
|
5479 } |
|
5480 e1000e_reset_interrupt_capability(adapter); |
|
5481 |
|
5482 retval = pci_save_state(pdev); |
|
5483 if (retval) |
|
5484 return retval; |
|
5485 |
|
5486 status = er32(STATUS); |
|
5487 if (status & E1000_STATUS_LU) |
|
5488 wufc &= ~E1000_WUFC_LNKC; |
|
5489 |
|
5490 if (wufc) { |
|
5491 e1000_setup_rctl(adapter); |
|
5492 e1000e_set_rx_mode(netdev); |
|
5493 |
|
5494 /* turn on all-multi mode if wake on multicast is enabled */ |
|
5495 if (wufc & E1000_WUFC_MC) { |
|
5496 rctl = er32(RCTL); |
|
5497 rctl |= E1000_RCTL_MPE; |
|
5498 ew32(RCTL, rctl); |
|
5499 } |
|
5500 |
|
5501 ctrl = er32(CTRL); |
|
5502 /* advertise wake from D3Cold */ |
|
5503 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
5504 /* phy power management enable */ |
|
5505 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
5506 ctrl |= E1000_CTRL_ADVD3WUC; |
|
5507 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) |
|
5508 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; |
|
5509 ew32(CTRL, ctrl); |
|
5510 |
|
5511 if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
|
5512 adapter->hw.phy.media_type == |
|
5513 e1000_media_type_internal_serdes) { |
|
5514 /* keep the laser running in D3 */ |
|
5515 ctrl_ext = er32(CTRL_EXT); |
|
5516 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
|
5517 ew32(CTRL_EXT, ctrl_ext); |
|
5518 } |
|
5519 |
|
5520 if (adapter->flags & FLAG_IS_ICH) |
|
5521 e1000_suspend_workarounds_ich8lan(&adapter->hw); |
|
5522 |
|
5523 /* Allow time for pending master requests to run */ |
|
5524 e1000e_disable_pcie_master(&adapter->hw); |
|
5525 |
|
5526 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5527 /* enable wakeup by the PHY */ |
|
5528 retval = e1000_init_phy_wakeup(adapter, wufc); |
|
5529 if (retval) |
|
5530 return retval; |
|
5531 } else { |
|
5532 /* enable wakeup by the MAC */ |
|
5533 ew32(WUFC, wufc); |
|
5534 ew32(WUC, E1000_WUC_PME_EN); |
|
5535 } |
|
5536 } else { |
|
5537 ew32(WUC, 0); |
|
5538 ew32(WUFC, 0); |
|
5539 } |
|
5540 |
|
5541 *enable_wake = !!wufc; |
|
5542 |
|
5543 /* make sure adapter isn't asleep if manageability is enabled */ |
|
5544 if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
|
5545 (hw->mac.ops.check_mng_mode(hw))) |
|
5546 *enable_wake = true; |
|
5547 |
|
5548 if (adapter->hw.phy.type == e1000_phy_igp_3) |
|
5549 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
|
5550 |
|
5551 /* |
|
5552 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
5553 * would have already happened in close and is redundant. |
|
5554 */ |
|
5555 e1000e_release_hw_control(adapter); |
|
5556 |
|
5557 pci_disable_device(pdev); |
|
5558 |
|
5559 return 0; |
|
5560 } |
|
5561 |
|
5562 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) |
|
5563 { |
|
5564 if (sleep && wake) { |
|
5565 pci_prepare_to_sleep(pdev); |
|
5566 return; |
|
5567 } |
|
5568 |
|
5569 pci_wake_from_d3(pdev, wake); |
|
5570 pci_set_power_state(pdev, PCI_D3hot); |
|
5571 } |
|
5572 |
|
5573 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, |
|
5574 bool wake) |
|
5575 { |
|
5576 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5577 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5578 |
|
5579 /* |
|
5580 * The pci-e switch on some quad port adapters will report a |
|
5581 * correctable error when the MAC transitions from D0 to D3. To |
|
5582 * prevent this we need to mask off the correctable errors on the |
|
5583 * downstream port of the pci-e switch. |
|
5584 */ |
|
5585 if (adapter->flags & FLAG_IS_QUAD_PORT) { |
|
5586 struct pci_dev *us_dev = pdev->bus->self; |
|
5587 int pos = pci_pcie_cap(us_dev); |
|
5588 u16 devctl; |
|
5589 |
|
5590 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); |
|
5591 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, |
|
5592 (devctl & ~PCI_EXP_DEVCTL_CERE)); |
|
5593 |
|
5594 e1000_power_off(pdev, sleep, wake); |
|
5595 |
|
5596 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); |
|
5597 } else { |
|
5598 e1000_power_off(pdev, sleep, wake); |
|
5599 } |
|
5600 } |
|
5601 |
|
5602 #ifdef CONFIG_PCIEASPM |
|
5603 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5604 { |
|
5605 pci_disable_link_state_locked(pdev, state); |
|
5606 } |
|
5607 #else |
|
5608 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5609 { |
|
5610 int pos; |
|
5611 u16 reg16; |
|
5612 |
|
5613 /* |
|
5614 * Both device and parent should have the same ASPM setting. |
|
5615 * Disable ASPM in downstream component first and then upstream. |
|
5616 */ |
|
5617 pos = pci_pcie_cap(pdev); |
|
5618 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16); |
|
5619 reg16 &= ~state; |
|
5620 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16); |
|
5621 |
|
5622 if (!pdev->bus->self) |
|
5623 return; |
|
5624 |
|
5625 pos = pci_pcie_cap(pdev->bus->self); |
|
5626 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16); |
|
5627 reg16 &= ~state; |
|
5628 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16); |
|
5629 } |
|
5630 #endif |
|
5631 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5632 { |
|
5633 dev_info(&pdev->dev, "Disabling ASPM %s %s\n", |
|
5634 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "", |
|
5635 (state & PCIE_LINK_STATE_L1) ? "L1" : ""); |
|
5636 |
|
5637 __e1000e_disable_aspm(pdev, state); |
|
5638 } |
|
5639 |
|
5640 #ifdef CONFIG_PM |
|
5641 static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
|
5642 { |
|
5643 return !!adapter->tx_ring->buffer_info; |
|
5644 } |
|
5645 |
|
5646 static int __e1000_resume(struct pci_dev *pdev) |
|
5647 { |
|
5648 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5649 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5650 struct e1000_hw *hw = &adapter->hw; |
|
5651 u16 aspm_disable_flag = 0; |
|
5652 u32 err; |
|
5653 |
|
5654 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
5655 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
5656 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5657 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
5658 if (aspm_disable_flag) |
|
5659 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
5660 |
|
5661 pci_set_power_state(pdev, PCI_D0); |
|
5662 pci_restore_state(pdev); |
|
5663 pci_save_state(pdev); |
|
5664 |
|
5665 e1000e_set_interrupt_capability(adapter); |
|
5666 if (netif_running(netdev)) { |
|
5667 err = e1000_request_irq(adapter); |
|
5668 if (err) |
|
5669 return err; |
|
5670 } |
|
5671 |
|
5672 if (hw->mac.type >= e1000_pch2lan) |
|
5673 e1000_resume_workarounds_pchlan(&adapter->hw); |
|
5674 |
|
5675 e1000e_power_up_phy(adapter); |
|
5676 |
|
5677 /* report the system wakeup cause from S3/S4 */ |
|
5678 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5679 u16 phy_data; |
|
5680 |
|
5681 e1e_rphy(&adapter->hw, BM_WUS, &phy_data); |
|
5682 if (phy_data) { |
|
5683 e_info("PHY Wakeup cause - %s\n", |
|
5684 phy_data & E1000_WUS_EX ? "Unicast Packet" : |
|
5685 phy_data & E1000_WUS_MC ? "Multicast Packet" : |
|
5686 phy_data & E1000_WUS_BC ? "Broadcast Packet" : |
|
5687 phy_data & E1000_WUS_MAG ? "Magic Packet" : |
|
5688 phy_data & E1000_WUS_LNKC ? |
|
5689 "Link Status Change" : "other"); |
|
5690 } |
|
5691 e1e_wphy(&adapter->hw, BM_WUS, ~0); |
|
5692 } else { |
|
5693 u32 wus = er32(WUS); |
|
5694 if (wus) { |
|
5695 e_info("MAC Wakeup cause - %s\n", |
|
5696 wus & E1000_WUS_EX ? "Unicast Packet" : |
|
5697 wus & E1000_WUS_MC ? "Multicast Packet" : |
|
5698 wus & E1000_WUS_BC ? "Broadcast Packet" : |
|
5699 wus & E1000_WUS_MAG ? "Magic Packet" : |
|
5700 wus & E1000_WUS_LNKC ? "Link Status Change" : |
|
5701 "other"); |
|
5702 } |
|
5703 ew32(WUS, ~0); |
|
5704 } |
|
5705 |
|
5706 e1000e_reset(adapter); |
|
5707 |
|
5708 e1000_init_manageability_pt(adapter); |
|
5709 |
|
5710 if (netif_running(netdev)) |
|
5711 e1000e_up(adapter); |
|
5712 |
|
5713 netif_device_attach(netdev); |
|
5714 |
|
5715 /* |
|
5716 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5717 * is up. For all other cases, let the f/w know that the h/w is now |
|
5718 * under the control of the driver. |
|
5719 */ |
|
5720 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5721 e1000e_get_hw_control(adapter); |
|
5722 |
|
5723 return 0; |
|
5724 } |
|
5725 |
|
5726 #ifdef CONFIG_PM_SLEEP |
|
5727 static int e1000_suspend(struct device *dev) |
|
5728 { |
|
5729 struct pci_dev *pdev = to_pci_dev(dev); |
|
5730 int retval; |
|
5731 bool wake; |
|
5732 |
|
5733 retval = __e1000_shutdown(pdev, &wake, false); |
|
5734 if (!retval) |
|
5735 e1000_complete_shutdown(pdev, true, wake); |
|
5736 |
|
5737 return retval; |
|
5738 } |
|
5739 |
|
5740 static int e1000_resume(struct device *dev) |
|
5741 { |
|
5742 struct pci_dev *pdev = to_pci_dev(dev); |
|
5743 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5744 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5745 |
|
5746 if (e1000e_pm_ready(adapter)) |
|
5747 adapter->idle_check = true; |
|
5748 |
|
5749 return __e1000_resume(pdev); |
|
5750 } |
|
5751 #endif /* CONFIG_PM_SLEEP */ |
|
5752 |
|
5753 #ifdef CONFIG_PM_RUNTIME |
|
5754 static int e1000_runtime_suspend(struct device *dev) |
|
5755 { |
|
5756 struct pci_dev *pdev = to_pci_dev(dev); |
|
5757 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5758 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5759 |
|
5760 if (e1000e_pm_ready(adapter)) { |
|
5761 bool wake; |
|
5762 |
|
5763 __e1000_shutdown(pdev, &wake, true); |
|
5764 } |
|
5765 |
|
5766 return 0; |
|
5767 } |
|
5768 |
|
5769 static int e1000_idle(struct device *dev) |
|
5770 { |
|
5771 struct pci_dev *pdev = to_pci_dev(dev); |
|
5772 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5773 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5774 |
|
5775 if (!e1000e_pm_ready(adapter)) |
|
5776 return 0; |
|
5777 |
|
5778 if (adapter->idle_check) { |
|
5779 adapter->idle_check = false; |
|
5780 if (!e1000e_has_link(adapter)) |
|
5781 pm_schedule_suspend(dev, MSEC_PER_SEC); |
|
5782 } |
|
5783 |
|
5784 return -EBUSY; |
|
5785 } |
|
5786 |
|
5787 static int e1000_runtime_resume(struct device *dev) |
|
5788 { |
|
5789 struct pci_dev *pdev = to_pci_dev(dev); |
|
5790 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5791 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5792 |
|
5793 if (!e1000e_pm_ready(adapter)) |
|
5794 return 0; |
|
5795 |
|
5796 adapter->idle_check = !dev->power.runtime_auto; |
|
5797 return __e1000_resume(pdev); |
|
5798 } |
|
5799 #endif /* CONFIG_PM_RUNTIME */ |
|
5800 #endif /* CONFIG_PM */ |
|
5801 |
|
5802 static void e1000_shutdown(struct pci_dev *pdev) |
|
5803 { |
|
5804 bool wake = false; |
|
5805 |
|
5806 __e1000_shutdown(pdev, &wake, false); |
|
5807 |
|
5808 if (system_state == SYSTEM_POWER_OFF) |
|
5809 e1000_complete_shutdown(pdev, false, wake); |
|
5810 } |
|
5811 |
|
5812 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5813 |
|
5814 static irqreturn_t e1000_intr_msix(int irq, void *data) |
|
5815 { |
|
5816 struct net_device *netdev = data; |
|
5817 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5818 |
|
5819 if (adapter->msix_entries) { |
|
5820 int vector, msix_irq; |
|
5821 |
|
5822 vector = 0; |
|
5823 msix_irq = adapter->msix_entries[vector].vector; |
|
5824 disable_irq(msix_irq); |
|
5825 e1000_intr_msix_rx(msix_irq, netdev); |
|
5826 enable_irq(msix_irq); |
|
5827 |
|
5828 vector++; |
|
5829 msix_irq = adapter->msix_entries[vector].vector; |
|
5830 disable_irq(msix_irq); |
|
5831 e1000_intr_msix_tx(msix_irq, netdev); |
|
5832 enable_irq(msix_irq); |
|
5833 |
|
5834 vector++; |
|
5835 msix_irq = adapter->msix_entries[vector].vector; |
|
5836 disable_irq(msix_irq); |
|
5837 e1000_msix_other(msix_irq, netdev); |
|
5838 enable_irq(msix_irq); |
|
5839 } |
|
5840 |
|
5841 return IRQ_HANDLED; |
|
5842 } |
|
5843 |
|
5844 /* |
|
5845 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
5846 * without having to re-enable interrupts. It's not called while |
|
5847 * the interrupt routine is executing. |
|
5848 */ |
|
5849 static void e1000_netpoll(struct net_device *netdev) |
|
5850 { |
|
5851 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5852 |
|
5853 switch (adapter->int_mode) { |
|
5854 case E1000E_INT_MODE_MSIX: |
|
5855 e1000_intr_msix(adapter->pdev->irq, netdev); |
|
5856 break; |
|
5857 case E1000E_INT_MODE_MSI: |
|
5858 disable_irq(adapter->pdev->irq); |
|
5859 e1000_intr_msi(adapter->pdev->irq, netdev); |
|
5860 enable_irq(adapter->pdev->irq); |
|
5861 break; |
|
5862 default: /* E1000E_INT_MODE_LEGACY */ |
|
5863 disable_irq(adapter->pdev->irq); |
|
5864 e1000_intr(adapter->pdev->irq, netdev); |
|
5865 enable_irq(adapter->pdev->irq); |
|
5866 break; |
|
5867 } |
|
5868 } |
|
5869 #endif |
|
5870 |
|
5871 /** |
|
5872 * e1000_io_error_detected - called when PCI error is detected |
|
5873 * @pdev: Pointer to PCI device |
|
5874 * @state: The current pci connection state |
|
5875 * |
|
5876 * This function is called after a PCI bus error affecting |
|
5877 * this device has been detected. |
|
5878 */ |
|
5879 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
5880 pci_channel_state_t state) |
|
5881 { |
|
5882 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5883 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5884 |
|
5885 netif_device_detach(netdev); |
|
5886 |
|
5887 if (state == pci_channel_io_perm_failure) |
|
5888 return PCI_ERS_RESULT_DISCONNECT; |
|
5889 |
|
5890 if (netif_running(netdev)) |
|
5891 e1000e_down(adapter); |
|
5892 pci_disable_device(pdev); |
|
5893 |
|
5894 /* Request a slot slot reset. */ |
|
5895 return PCI_ERS_RESULT_NEED_RESET; |
|
5896 } |
|
5897 |
|
5898 /** |
|
5899 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
5900 * @pdev: Pointer to PCI device |
|
5901 * |
|
5902 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
5903 * resembles the first-half of the e1000_resume routine. |
|
5904 */ |
|
5905 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
5906 { |
|
5907 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5908 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5909 struct e1000_hw *hw = &adapter->hw; |
|
5910 u16 aspm_disable_flag = 0; |
|
5911 int err; |
|
5912 pci_ers_result_t result; |
|
5913 |
|
5914 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
5915 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
5916 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5917 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
5918 if (aspm_disable_flag) |
|
5919 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
5920 |
|
5921 err = pci_enable_device_mem(pdev); |
|
5922 if (err) { |
|
5923 dev_err(&pdev->dev, |
|
5924 "Cannot re-enable PCI device after reset.\n"); |
|
5925 result = PCI_ERS_RESULT_DISCONNECT; |
|
5926 } else { |
|
5927 pci_set_master(pdev); |
|
5928 pdev->state_saved = true; |
|
5929 pci_restore_state(pdev); |
|
5930 |
|
5931 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5932 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5933 |
|
5934 e1000e_reset(adapter); |
|
5935 ew32(WUS, ~0); |
|
5936 result = PCI_ERS_RESULT_RECOVERED; |
|
5937 } |
|
5938 |
|
5939 pci_cleanup_aer_uncorrect_error_status(pdev); |
|
5940 |
|
5941 return result; |
|
5942 } |
|
5943 |
|
5944 /** |
|
5945 * e1000_io_resume - called when traffic can start flowing again. |
|
5946 * @pdev: Pointer to PCI device |
|
5947 * |
|
5948 * This callback is called when the error recovery driver tells us that |
|
5949 * its OK to resume normal operation. Implementation resembles the |
|
5950 * second-half of the e1000_resume routine. |
|
5951 */ |
|
5952 static void e1000_io_resume(struct pci_dev *pdev) |
|
5953 { |
|
5954 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5955 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5956 |
|
5957 e1000_init_manageability_pt(adapter); |
|
5958 |
|
5959 if (netif_running(netdev)) { |
|
5960 if (e1000e_up(adapter)) { |
|
5961 dev_err(&pdev->dev, |
|
5962 "can't bring device back up after reset\n"); |
|
5963 return; |
|
5964 } |
|
5965 } |
|
5966 |
|
5967 netif_device_attach(netdev); |
|
5968 |
|
5969 /* |
|
5970 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5971 * is up. For all other cases, let the f/w know that the h/w is now |
|
5972 * under the control of the driver. |
|
5973 */ |
|
5974 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5975 e1000e_get_hw_control(adapter); |
|
5976 |
|
5977 } |
|
5978 |
|
5979 static void e1000_print_device_info(struct e1000_adapter *adapter) |
|
5980 { |
|
5981 struct e1000_hw *hw = &adapter->hw; |
|
5982 struct net_device *netdev = adapter->netdev; |
|
5983 u32 ret_val; |
|
5984 u8 pba_str[E1000_PBANUM_LENGTH]; |
|
5985 |
|
5986 /* print bus type/speed/width info */ |
|
5987 e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
|
5988 /* bus width */ |
|
5989 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
|
5990 "Width x1"), |
|
5991 /* MAC address */ |
|
5992 netdev->dev_addr); |
|
5993 e_info("Intel(R) PRO/%s Network Connection\n", |
|
5994 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); |
|
5995 ret_val = e1000_read_pba_string_generic(hw, pba_str, |
|
5996 E1000_PBANUM_LENGTH); |
|
5997 if (ret_val) |
|
5998 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str)); |
|
5999 e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
|
6000 hw->mac.type, hw->phy.type, pba_str); |
|
6001 } |
|
6002 |
|
6003 static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
|
6004 { |
|
6005 struct e1000_hw *hw = &adapter->hw; |
|
6006 int ret_val; |
|
6007 u16 buf = 0; |
|
6008 |
|
6009 if (hw->mac.type != e1000_82573) |
|
6010 return; |
|
6011 |
|
6012 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); |
|
6013 le16_to_cpus(&buf); |
|
6014 if (!ret_val && (!(buf & (1 << 0)))) { |
|
6015 /* Deep Smart Power Down (DSPD) */ |
|
6016 dev_warn(&adapter->pdev->dev, |
|
6017 "Warning: detected DSPD enabled in EEPROM\n"); |
|
6018 } |
|
6019 } |
|
6020 |
|
6021 static int e1000_set_features(struct net_device *netdev, |
|
6022 netdev_features_t features) |
|
6023 { |
|
6024 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6025 netdev_features_t changed = features ^ netdev->features; |
|
6026 |
|
6027 if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) |
|
6028 adapter->flags |= FLAG_TSO_FORCE; |
|
6029 |
|
6030 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | |
|
6031 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | |
|
6032 NETIF_F_RXALL))) |
|
6033 return 0; |
|
6034 |
|
6035 if (changed & NETIF_F_RXFCS) { |
|
6036 if (features & NETIF_F_RXFCS) { |
|
6037 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6038 } else { |
|
6039 /* We need to take it back to defaults, which might mean |
|
6040 * stripping is still disabled at the adapter level. |
|
6041 */ |
|
6042 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING) |
|
6043 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
|
6044 else |
|
6045 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6046 } |
|
6047 } |
|
6048 |
|
6049 netdev->features = features; |
|
6050 |
|
6051 if (netif_running(netdev)) |
|
6052 e1000e_reinit_locked(adapter); |
|
6053 else |
|
6054 e1000e_reset(adapter); |
|
6055 |
|
6056 return 0; |
|
6057 } |
|
6058 |
|
6059 static const struct net_device_ops e1000e_netdev_ops = { |
|
6060 .ndo_open = e1000_open, |
|
6061 .ndo_stop = e1000_close, |
|
6062 .ndo_start_xmit = e1000_xmit_frame, |
|
6063 .ndo_get_stats64 = e1000e_get_stats64, |
|
6064 .ndo_set_rx_mode = e1000e_set_rx_mode, |
|
6065 .ndo_set_mac_address = e1000_set_mac, |
|
6066 .ndo_change_mtu = e1000_change_mtu, |
|
6067 .ndo_do_ioctl = e1000_ioctl, |
|
6068 .ndo_tx_timeout = e1000_tx_timeout, |
|
6069 .ndo_validate_addr = eth_validate_addr, |
|
6070 |
|
6071 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
6072 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
6073 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
6074 .ndo_poll_controller = e1000_netpoll, |
|
6075 #endif |
|
6076 .ndo_set_features = e1000_set_features, |
|
6077 }; |
|
6078 |
|
6079 /** |
|
6080 * e1000_probe - Device Initialization Routine |
|
6081 * @pdev: PCI device information struct |
|
6082 * @ent: entry in e1000_pci_tbl |
|
6083 * |
|
6084 * Returns 0 on success, negative on failure |
|
6085 * |
|
6086 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
6087 * The OS initialization, configuring of the adapter private structure, |
|
6088 * and a hardware reset occur. |
|
6089 **/ |
|
6090 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
6091 const struct pci_device_id *ent) |
|
6092 { |
|
6093 struct net_device *netdev; |
|
6094 struct e1000_adapter *adapter; |
|
6095 struct e1000_hw *hw; |
|
6096 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; |
|
6097 resource_size_t mmio_start, mmio_len; |
|
6098 resource_size_t flash_start, flash_len; |
|
6099 static int cards_found; |
|
6100 u16 aspm_disable_flag = 0; |
|
6101 int i, err, pci_using_dac; |
|
6102 u16 eeprom_data = 0; |
|
6103 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
6104 |
|
6105 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6106 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6107 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6108 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6109 if (aspm_disable_flag) |
|
6110 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6111 |
|
6112 err = pci_enable_device_mem(pdev); |
|
6113 if (err) |
|
6114 return err; |
|
6115 |
|
6116 pci_using_dac = 0; |
|
6117 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
6118 if (!err) { |
|
6119 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
6120 if (!err) |
|
6121 pci_using_dac = 1; |
|
6122 } else { |
|
6123 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
6124 if (err) { |
|
6125 err = dma_set_coherent_mask(&pdev->dev, |
|
6126 DMA_BIT_MASK(32)); |
|
6127 if (err) { |
|
6128 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); |
|
6129 goto err_dma; |
|
6130 } |
|
6131 } |
|
6132 } |
|
6133 |
|
6134 err = pci_request_selected_regions_exclusive(pdev, |
|
6135 pci_select_bars(pdev, IORESOURCE_MEM), |
|
6136 e1000e_driver_name); |
|
6137 if (err) |
|
6138 goto err_pci_reg; |
|
6139 |
|
6140 /* AER (Advanced Error Reporting) hooks */ |
|
6141 pci_enable_pcie_error_reporting(pdev); |
|
6142 |
|
6143 pci_set_master(pdev); |
|
6144 /* PCI config space info */ |
|
6145 err = pci_save_state(pdev); |
|
6146 if (err) |
|
6147 goto err_alloc_etherdev; |
|
6148 |
|
6149 err = -ENOMEM; |
|
6150 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
6151 if (!netdev) |
|
6152 goto err_alloc_etherdev; |
|
6153 |
|
6154 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
6155 |
|
6156 netdev->irq = pdev->irq; |
|
6157 |
|
6158 pci_set_drvdata(pdev, netdev); |
|
6159 adapter = netdev_priv(netdev); |
|
6160 hw = &adapter->hw; |
|
6161 adapter->netdev = netdev; |
|
6162 adapter->pdev = pdev; |
|
6163 adapter->ei = ei; |
|
6164 adapter->pba = ei->pba; |
|
6165 adapter->flags = ei->flags; |
|
6166 adapter->flags2 = ei->flags2; |
|
6167 adapter->hw.adapter = adapter; |
|
6168 adapter->hw.mac.type = ei->mac; |
|
6169 adapter->max_hw_frame_size = ei->max_hw_frame_size; |
|
6170 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
|
6171 |
|
6172 mmio_start = pci_resource_start(pdev, 0); |
|
6173 mmio_len = pci_resource_len(pdev, 0); |
|
6174 |
|
6175 err = -EIO; |
|
6176 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
6177 if (!adapter->hw.hw_addr) |
|
6178 goto err_ioremap; |
|
6179 |
|
6180 if ((adapter->flags & FLAG_HAS_FLASH) && |
|
6181 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
6182 flash_start = pci_resource_start(pdev, 1); |
|
6183 flash_len = pci_resource_len(pdev, 1); |
|
6184 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
6185 if (!adapter->hw.flash_address) |
|
6186 goto err_flashmap; |
|
6187 } |
|
6188 |
|
6189 /* construct the net_device struct */ |
|
6190 netdev->netdev_ops = &e1000e_netdev_ops; |
|
6191 e1000e_set_ethtool_ops(netdev); |
|
6192 netdev->watchdog_timeo = 5 * HZ; |
|
6193 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64); |
|
6194 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
|
6195 |
|
6196 netdev->mem_start = mmio_start; |
|
6197 netdev->mem_end = mmio_start + mmio_len; |
|
6198 |
|
6199 adapter->bd_number = cards_found++; |
|
6200 |
|
6201 e1000e_check_options(adapter); |
|
6202 |
|
6203 /* setup adapter struct */ |
|
6204 err = e1000_sw_init(adapter); |
|
6205 if (err) |
|
6206 goto err_sw_init; |
|
6207 |
|
6208 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
|
6209 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
|
6210 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
|
6211 |
|
6212 err = ei->get_variants(adapter); |
|
6213 if (err) |
|
6214 goto err_hw_init; |
|
6215 |
|
6216 if ((adapter->flags & FLAG_IS_ICH) && |
|
6217 (adapter->flags & FLAG_READ_ONLY_NVM)) |
|
6218 e1000e_write_protect_nvm_ich8lan(&adapter->hw); |
|
6219 |
|
6220 hw->mac.ops.get_bus_info(&adapter->hw); |
|
6221 |
|
6222 adapter->hw.phy.autoneg_wait_to_complete = 0; |
|
6223 |
|
6224 /* Copper options */ |
|
6225 if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
|
6226 adapter->hw.phy.mdix = AUTO_ALL_MODES; |
|
6227 adapter->hw.phy.disable_polarity_correction = 0; |
|
6228 adapter->hw.phy.ms_type = e1000_ms_hw_default; |
|
6229 } |
|
6230 |
|
6231 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw)) |
|
6232 dev_info(&pdev->dev, |
|
6233 "PHY reset is blocked due to SOL/IDER session.\n"); |
|
6234 |
|
6235 /* Set initial default active device features */ |
|
6236 netdev->features = (NETIF_F_SG | |
|
6237 NETIF_F_HW_VLAN_RX | |
|
6238 NETIF_F_HW_VLAN_TX | |
|
6239 NETIF_F_TSO | |
|
6240 NETIF_F_TSO6 | |
|
6241 NETIF_F_RXHASH | |
|
6242 NETIF_F_RXCSUM | |
|
6243 NETIF_F_HW_CSUM); |
|
6244 |
|
6245 /* Set user-changeable features (subset of all device features) */ |
|
6246 netdev->hw_features = netdev->features; |
|
6247 netdev->hw_features |= NETIF_F_RXFCS; |
|
6248 netdev->priv_flags |= IFF_SUPP_NOFCS; |
|
6249 netdev->hw_features |= NETIF_F_RXALL; |
|
6250 |
|
6251 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
6252 netdev->features |= NETIF_F_HW_VLAN_FILTER; |
|
6253 |
|
6254 netdev->vlan_features |= (NETIF_F_SG | |
|
6255 NETIF_F_TSO | |
|
6256 NETIF_F_TSO6 | |
|
6257 NETIF_F_HW_CSUM); |
|
6258 |
|
6259 netdev->priv_flags |= IFF_UNICAST_FLT; |
|
6260 |
|
6261 if (pci_using_dac) { |
|
6262 netdev->features |= NETIF_F_HIGHDMA; |
|
6263 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
6264 } |
|
6265 |
|
6266 if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
|
6267 adapter->flags |= FLAG_MNG_PT_ENABLED; |
|
6268 |
|
6269 /* |
|
6270 * before reading the NVM, reset the controller to |
|
6271 * put the device in a known good starting state |
|
6272 */ |
|
6273 adapter->hw.mac.ops.reset_hw(&adapter->hw); |
|
6274 |
|
6275 /* |
|
6276 * systems with ASPM and others may see the checksum fail on the first |
|
6277 * attempt. Let's give it a few tries |
|
6278 */ |
|
6279 for (i = 0;; i++) { |
|
6280 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) |
|
6281 break; |
|
6282 if (i == 2) { |
|
6283 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
|
6284 err = -EIO; |
|
6285 goto err_eeprom; |
|
6286 } |
|
6287 } |
|
6288 |
|
6289 e1000_eeprom_checks(adapter); |
|
6290 |
|
6291 /* copy the MAC address */ |
|
6292 if (e1000e_read_mac_addr(&adapter->hw)) |
|
6293 dev_err(&pdev->dev, |
|
6294 "NVM Read Error while reading MAC address\n"); |
|
6295 |
|
6296 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6297 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6298 |
|
6299 if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
6300 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
|
6301 netdev->perm_addr); |
|
6302 err = -EIO; |
|
6303 goto err_eeprom; |
|
6304 } |
|
6305 |
|
6306 init_timer(&adapter->watchdog_timer); |
|
6307 adapter->watchdog_timer.function = e1000_watchdog; |
|
6308 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
6309 |
|
6310 init_timer(&adapter->phy_info_timer); |
|
6311 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
6312 adapter->phy_info_timer.data = (unsigned long) adapter; |
|
6313 |
|
6314 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
6315 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); |
|
6316 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
|
6317 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); |
|
6318 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
|
6319 |
|
6320 /* Initialize link parameters. User can change them with ethtool */ |
|
6321 adapter->hw.mac.autoneg = 1; |
|
6322 adapter->fc_autoneg = true; |
|
6323 adapter->hw.fc.requested_mode = e1000_fc_default; |
|
6324 adapter->hw.fc.current_mode = e1000_fc_default; |
|
6325 adapter->hw.phy.autoneg_advertised = 0x2f; |
|
6326 |
|
6327 /* ring size defaults */ |
|
6328 adapter->rx_ring->count = E1000_DEFAULT_RXD; |
|
6329 adapter->tx_ring->count = E1000_DEFAULT_TXD; |
|
6330 |
|
6331 /* |
|
6332 * Initial Wake on LAN setting - If APM wake is enabled in |
|
6333 * the EEPROM, enable the ACPI Magic Packet filter |
|
6334 */ |
|
6335 if (adapter->flags & FLAG_APME_IN_WUC) { |
|
6336 /* APME bit in EEPROM is mapped to WUC.APME */ |
|
6337 eeprom_data = er32(WUC); |
|
6338 eeprom_apme_mask = E1000_WUC_APME; |
|
6339 if ((hw->mac.type > e1000_ich10lan) && |
|
6340 (eeprom_data & E1000_WUC_PHY_WAKE)) |
|
6341 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
|
6342 } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
|
6343 if (adapter->flags & FLAG_APME_CHECK_PORT_B && |
|
6344 (adapter->hw.bus.func == 1)) |
|
6345 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B, |
|
6346 1, &eeprom_data); |
|
6347 else |
|
6348 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A, |
|
6349 1, &eeprom_data); |
|
6350 } |
|
6351 |
|
6352 /* fetch WoL from EEPROM */ |
|
6353 if (eeprom_data & eeprom_apme_mask) |
|
6354 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
6355 |
|
6356 /* |
|
6357 * now that we have the eeprom settings, apply the special cases |
|
6358 * where the eeprom may be wrong or the board simply won't support |
|
6359 * wake on lan on a particular port |
|
6360 */ |
|
6361 if (!(adapter->flags & FLAG_HAS_WOL)) |
|
6362 adapter->eeprom_wol = 0; |
|
6363 |
|
6364 /* initialize the wol settings based on the eeprom settings */ |
|
6365 adapter->wol = adapter->eeprom_wol; |
|
6366 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
6367 |
|
6368 /* save off EEPROM version number */ |
|
6369 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
|
6370 |
|
6371 /* reset the hardware with the new settings */ |
|
6372 e1000e_reset(adapter); |
|
6373 |
|
6374 /* |
|
6375 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
6376 * is up. For all other cases, let the f/w know that the h/w is now |
|
6377 * under the control of the driver. |
|
6378 */ |
|
6379 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6380 e1000e_get_hw_control(adapter); |
|
6381 |
|
6382 strlcpy(netdev->name, "eth%d", sizeof(netdev->name)); |
|
6383 err = register_netdev(netdev); |
|
6384 if (err) |
|
6385 goto err_register; |
|
6386 |
|
6387 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
6388 netif_carrier_off(netdev); |
|
6389 |
|
6390 e1000_print_device_info(adapter); |
|
6391 |
|
6392 if (pci_dev_run_wake(pdev)) |
|
6393 pm_runtime_put_noidle(&pdev->dev); |
|
6394 |
|
6395 return 0; |
|
6396 |
|
6397 err_register: |
|
6398 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6399 e1000e_release_hw_control(adapter); |
|
6400 err_eeprom: |
|
6401 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw)) |
|
6402 e1000_phy_hw_reset(&adapter->hw); |
|
6403 err_hw_init: |
|
6404 kfree(adapter->tx_ring); |
|
6405 kfree(adapter->rx_ring); |
|
6406 err_sw_init: |
|
6407 if (adapter->hw.flash_address) |
|
6408 iounmap(adapter->hw.flash_address); |
|
6409 e1000e_reset_interrupt_capability(adapter); |
|
6410 err_flashmap: |
|
6411 iounmap(adapter->hw.hw_addr); |
|
6412 err_ioremap: |
|
6413 free_netdev(netdev); |
|
6414 err_alloc_etherdev: |
|
6415 pci_release_selected_regions(pdev, |
|
6416 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6417 err_pci_reg: |
|
6418 err_dma: |
|
6419 pci_disable_device(pdev); |
|
6420 return err; |
|
6421 } |
|
6422 |
|
6423 /** |
|
6424 * e1000_remove - Device Removal Routine |
|
6425 * @pdev: PCI device information struct |
|
6426 * |
|
6427 * e1000_remove is called by the PCI subsystem to alert the driver |
|
6428 * that it should release a PCI device. The could be caused by a |
|
6429 * Hot-Plug event, or because the driver is going to be removed from |
|
6430 * memory. |
|
6431 **/ |
|
6432 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
6433 { |
|
6434 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6435 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6436 bool down = test_bit(__E1000_DOWN, &adapter->state); |
|
6437 |
|
6438 /* |
|
6439 * The timers may be rescheduled, so explicitly disable them |
|
6440 * from being rescheduled. |
|
6441 */ |
|
6442 if (!down) |
|
6443 set_bit(__E1000_DOWN, &adapter->state); |
|
6444 del_timer_sync(&adapter->watchdog_timer); |
|
6445 del_timer_sync(&adapter->phy_info_timer); |
|
6446 |
|
6447 cancel_work_sync(&adapter->reset_task); |
|
6448 cancel_work_sync(&adapter->watchdog_task); |
|
6449 cancel_work_sync(&adapter->downshift_task); |
|
6450 cancel_work_sync(&adapter->update_phy_task); |
|
6451 cancel_work_sync(&adapter->print_hang_task); |
|
6452 |
|
6453 if (!(netdev->flags & IFF_UP)) |
|
6454 e1000_power_down_phy(adapter); |
|
6455 |
|
6456 /* Don't lie to e1000_close() down the road. */ |
|
6457 if (!down) |
|
6458 clear_bit(__E1000_DOWN, &adapter->state); |
|
6459 unregister_netdev(netdev); |
|
6460 |
|
6461 if (pci_dev_run_wake(pdev)) |
|
6462 pm_runtime_get_noresume(&pdev->dev); |
|
6463 |
|
6464 /* |
|
6465 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
6466 * would have already happened in close and is redundant. |
|
6467 */ |
|
6468 e1000e_release_hw_control(adapter); |
|
6469 |
|
6470 e1000e_reset_interrupt_capability(adapter); |
|
6471 kfree(adapter->tx_ring); |
|
6472 kfree(adapter->rx_ring); |
|
6473 |
|
6474 iounmap(adapter->hw.hw_addr); |
|
6475 if (adapter->hw.flash_address) |
|
6476 iounmap(adapter->hw.flash_address); |
|
6477 pci_release_selected_regions(pdev, |
|
6478 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6479 |
|
6480 free_netdev(netdev); |
|
6481 |
|
6482 /* AER disable */ |
|
6483 pci_disable_pcie_error_reporting(pdev); |
|
6484 |
|
6485 pci_disable_device(pdev); |
|
6486 } |
|
6487 |
|
6488 /* PCI Error Recovery (ERS) */ |
|
6489 static struct pci_error_handlers e1000_err_handler = { |
|
6490 .error_detected = e1000_io_error_detected, |
|
6491 .slot_reset = e1000_io_slot_reset, |
|
6492 .resume = e1000_io_resume, |
|
6493 }; |
|
6494 |
|
6495 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
|
6496 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
|
6497 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, |
|
6498 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, |
|
6499 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, |
|
6500 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
|
6501 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, |
|
6502 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
|
6503 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, |
|
6504 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, |
|
6505 |
|
6506 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
|
6507 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, |
|
6508 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, |
|
6509 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, |
|
6510 |
|
6511 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
|
6512 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, |
|
6513 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, |
|
6514 |
|
6515 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
|
6516 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
|
6517 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
|
6518 |
|
6519 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
|
6520 board_80003es2lan }, |
|
6521 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), |
|
6522 board_80003es2lan }, |
|
6523 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), |
|
6524 board_80003es2lan }, |
|
6525 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), |
|
6526 board_80003es2lan }, |
|
6527 |
|
6528 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
|
6529 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, |
|
6530 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, |
|
6531 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, |
|
6532 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, |
|
6533 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, |
|
6534 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, |
|
6535 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
|
6536 |
|
6537 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
|
6538 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, |
|
6539 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, |
|
6540 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, |
|
6541 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, |
|
6542 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
|
6543 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
|
6544 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, |
|
6545 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, |
|
6546 |
|
6547 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, |
|
6548 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, |
|
6549 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, |
|
6550 |
|
6551 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
|
6552 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, |
|
6553 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
|
6554 |
|
6555 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
|
6556 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, |
|
6557 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, |
|
6558 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, |
|
6559 |
|
6560 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
|
6561 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, |
|
6562 |
|
6563 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt }, |
|
6564 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt }, |
|
6565 |
|
6566 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ |
|
6567 }; |
|
6568 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
|
6569 |
|
6570 #ifdef CONFIG_PM |
|
6571 static const struct dev_pm_ops e1000_pm_ops = { |
|
6572 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume) |
|
6573 SET_RUNTIME_PM_OPS(e1000_runtime_suspend, |
|
6574 e1000_runtime_resume, e1000_idle) |
|
6575 }; |
|
6576 #endif |
|
6577 |
|
6578 /* PCI Device API Driver */ |
|
6579 static struct pci_driver e1000_driver = { |
|
6580 .name = e1000e_driver_name, |
|
6581 .id_table = e1000_pci_tbl, |
|
6582 .probe = e1000_probe, |
|
6583 .remove = __devexit_p(e1000_remove), |
|
6584 #ifdef CONFIG_PM |
|
6585 .driver = { |
|
6586 .pm = &e1000_pm_ops, |
|
6587 }, |
|
6588 #endif |
|
6589 .shutdown = e1000_shutdown, |
|
6590 .err_handler = &e1000_err_handler |
|
6591 }; |
|
6592 |
|
6593 /** |
|
6594 * e1000_init_module - Driver Registration Routine |
|
6595 * |
|
6596 * e1000_init_module is the first routine called when the driver is |
|
6597 * loaded. All it does is register with the PCI subsystem. |
|
6598 **/ |
|
6599 static int __init e1000_init_module(void) |
|
6600 { |
|
6601 int ret; |
|
6602 pr_info("Intel(R) PRO/1000 Network Driver - %s\n", |
|
6603 e1000e_driver_version); |
|
6604 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n"); |
|
6605 ret = pci_register_driver(&e1000_driver); |
|
6606 |
|
6607 return ret; |
|
6608 } |
|
6609 module_init(e1000_init_module); |
|
6610 |
|
6611 /** |
|
6612 * e1000_exit_module - Driver Exit Cleanup Routine |
|
6613 * |
|
6614 * e1000_exit_module is called just before the driver is removed |
|
6615 * from memory. |
|
6616 **/ |
|
6617 static void __exit e1000_exit_module(void) |
|
6618 { |
|
6619 pci_unregister_driver(&e1000_driver); |
|
6620 } |
|
6621 module_exit(e1000_exit_module); |
|
6622 |
|
6623 |
|
6624 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
|
6625 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); |
|
6626 MODULE_LICENSE("GPL"); |
|
6627 MODULE_VERSION(DRV_VERSION); |
|
6628 |
|
6629 /* netdev.c */ |