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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 - 2011 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 "1.5.1" 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 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state); |
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64 |
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65 static const struct e1000_info *e1000_info_tbl[] = { |
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66 [board_82571] = &e1000_82571_info, |
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67 [board_82572] = &e1000_82572_info, |
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68 [board_82573] = &e1000_82573_info, |
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69 [board_82574] = &e1000_82574_info, |
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70 [board_82583] = &e1000_82583_info, |
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71 [board_80003es2lan] = &e1000_es2_info, |
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72 [board_ich8lan] = &e1000_ich8_info, |
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73 [board_ich9lan] = &e1000_ich9_info, |
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74 [board_ich10lan] = &e1000_ich10_info, |
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75 [board_pchlan] = &e1000_pch_info, |
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76 [board_pch2lan] = &e1000_pch2_info, |
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77 }; |
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78 |
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79 struct e1000_reg_info { |
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80 u32 ofs; |
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81 char *name; |
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82 }; |
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83 |
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84 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */ |
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85 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */ |
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86 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */ |
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87 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */ |
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88 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */ |
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89 |
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90 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */ |
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91 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */ |
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92 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */ |
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93 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */ |
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94 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */ |
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95 |
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96 static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
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97 |
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98 /* General Registers */ |
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99 {E1000_CTRL, "CTRL"}, |
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100 {E1000_STATUS, "STATUS"}, |
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101 {E1000_CTRL_EXT, "CTRL_EXT"}, |
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102 |
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103 /* Interrupt Registers */ |
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104 {E1000_ICR, "ICR"}, |
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105 |
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106 /* Rx Registers */ |
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107 {E1000_RCTL, "RCTL"}, |
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108 {E1000_RDLEN, "RDLEN"}, |
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109 {E1000_RDH, "RDH"}, |
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110 {E1000_RDT, "RDT"}, |
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111 {E1000_RDTR, "RDTR"}, |
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112 {E1000_RXDCTL(0), "RXDCTL"}, |
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113 {E1000_ERT, "ERT"}, |
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114 {E1000_RDBAL, "RDBAL"}, |
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115 {E1000_RDBAH, "RDBAH"}, |
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116 {E1000_RDFH, "RDFH"}, |
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117 {E1000_RDFT, "RDFT"}, |
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118 {E1000_RDFHS, "RDFHS"}, |
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119 {E1000_RDFTS, "RDFTS"}, |
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120 {E1000_RDFPC, "RDFPC"}, |
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121 |
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122 /* Tx Registers */ |
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123 {E1000_TCTL, "TCTL"}, |
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124 {E1000_TDBAL, "TDBAL"}, |
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125 {E1000_TDBAH, "TDBAH"}, |
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126 {E1000_TDLEN, "TDLEN"}, |
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127 {E1000_TDH, "TDH"}, |
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128 {E1000_TDT, "TDT"}, |
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129 {E1000_TIDV, "TIDV"}, |
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130 {E1000_TXDCTL(0), "TXDCTL"}, |
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131 {E1000_TADV, "TADV"}, |
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132 {E1000_TARC(0), "TARC"}, |
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133 {E1000_TDFH, "TDFH"}, |
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134 {E1000_TDFT, "TDFT"}, |
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135 {E1000_TDFHS, "TDFHS"}, |
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136 {E1000_TDFTS, "TDFTS"}, |
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137 {E1000_TDFPC, "TDFPC"}, |
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138 |
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139 /* List Terminator */ |
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140 {} |
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141 }; |
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142 |
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143 /* |
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144 * e1000_regdump - register printout routine |
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145 */ |
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146 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
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147 { |
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148 int n = 0; |
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149 char rname[16]; |
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150 u32 regs[8]; |
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151 |
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152 switch (reginfo->ofs) { |
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153 case E1000_RXDCTL(0): |
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154 for (n = 0; n < 2; n++) |
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155 regs[n] = __er32(hw, E1000_RXDCTL(n)); |
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156 break; |
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157 case E1000_TXDCTL(0): |
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158 for (n = 0; n < 2; n++) |
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159 regs[n] = __er32(hw, E1000_TXDCTL(n)); |
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160 break; |
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161 case E1000_TARC(0): |
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162 for (n = 0; n < 2; n++) |
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163 regs[n] = __er32(hw, E1000_TARC(n)); |
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164 break; |
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165 default: |
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166 printk(KERN_INFO "%-15s %08x\n", |
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167 reginfo->name, __er32(hw, reginfo->ofs)); |
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168 return; |
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169 } |
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170 |
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171 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); |
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172 printk(KERN_INFO "%-15s ", rname); |
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173 for (n = 0; n < 2; n++) |
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174 printk(KERN_CONT "%08x ", regs[n]); |
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175 printk(KERN_CONT "\n"); |
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176 } |
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177 |
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178 /* |
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179 * e1000e_dump - Print registers, Tx-ring and Rx-ring |
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180 */ |
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181 static void e1000e_dump(struct e1000_adapter *adapter) |
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182 { |
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183 struct net_device *netdev = adapter->netdev; |
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184 struct e1000_hw *hw = &adapter->hw; |
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185 struct e1000_reg_info *reginfo; |
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186 struct e1000_ring *tx_ring = adapter->tx_ring; |
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187 struct e1000_tx_desc *tx_desc; |
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188 struct my_u0 { |
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189 u64 a; |
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190 u64 b; |
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191 } *u0; |
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192 struct e1000_buffer *buffer_info; |
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193 struct e1000_ring *rx_ring = adapter->rx_ring; |
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194 union e1000_rx_desc_packet_split *rx_desc_ps; |
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195 union e1000_rx_desc_extended *rx_desc; |
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196 struct my_u1 { |
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197 u64 a; |
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198 u64 b; |
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199 u64 c; |
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200 u64 d; |
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201 } *u1; |
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202 u32 staterr; |
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203 int i = 0; |
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204 |
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205 if (!netif_msg_hw(adapter)) |
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206 return; |
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207 |
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208 /* Print netdevice Info */ |
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209 if (netdev) { |
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210 dev_info(&adapter->pdev->dev, "Net device Info\n"); |
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211 printk(KERN_INFO "Device Name state " |
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212 "trans_start last_rx\n"); |
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213 printk(KERN_INFO "%-15s %016lX %016lX %016lX\n", |
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214 netdev->name, netdev->state, netdev->trans_start, |
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215 netdev->last_rx); |
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216 } |
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217 |
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218 /* Print Registers */ |
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219 dev_info(&adapter->pdev->dev, "Register Dump\n"); |
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220 printk(KERN_INFO " Register Name Value\n"); |
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221 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
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222 reginfo->name; reginfo++) { |
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223 e1000_regdump(hw, reginfo); |
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224 } |
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225 |
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226 /* Print Tx Ring Summary */ |
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227 if (!netdev || !netif_running(netdev)) |
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228 goto exit; |
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229 |
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230 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
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231 printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]" |
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232 " leng ntw timestamp\n"); |
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233 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
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234 printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n", |
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235 0, tx_ring->next_to_use, tx_ring->next_to_clean, |
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236 (unsigned long long)buffer_info->dma, |
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237 buffer_info->length, |
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238 buffer_info->next_to_watch, |
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239 (unsigned long long)buffer_info->time_stamp); |
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240 |
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241 /* Print Tx Ring */ |
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242 if (!netif_msg_tx_done(adapter)) |
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243 goto rx_ring_summary; |
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244 |
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245 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
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246 |
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247 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) |
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248 * |
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249 * Legacy Transmit Descriptor |
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250 * +--------------------------------------------------------------+ |
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251 * 0 | Buffer Address [63:0] (Reserved on Write Back) | |
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252 * +--------------------------------------------------------------+ |
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253 * 8 | Special | CSS | Status | CMD | CSO | Length | |
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254 * +--------------------------------------------------------------+ |
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255 * 63 48 47 36 35 32 31 24 23 16 15 0 |
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256 * |
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257 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload |
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258 * 63 48 47 40 39 32 31 16 15 8 7 0 |
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259 * +----------------------------------------------------------------+ |
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260 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | |
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261 * +----------------------------------------------------------------+ |
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262 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | |
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263 * +----------------------------------------------------------------+ |
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264 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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265 * |
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266 * Extended Data Descriptor (DTYP=0x1) |
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267 * +----------------------------------------------------------------+ |
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268 * 0 | Buffer Address [63:0] | |
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269 * +----------------------------------------------------------------+ |
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270 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | |
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271 * +----------------------------------------------------------------+ |
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272 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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273 */ |
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274 printk(KERN_INFO "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]" |
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275 " [bi->dma ] leng ntw timestamp bi->skb " |
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276 "<-- Legacy format\n"); |
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277 printk(KERN_INFO "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]" |
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278 " [bi->dma ] leng ntw timestamp bi->skb " |
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279 "<-- Ext Context format\n"); |
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280 printk(KERN_INFO "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]" |
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281 " [bi->dma ] leng ntw timestamp bi->skb " |
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282 "<-- Ext Data format\n"); |
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283 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
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284 tx_desc = E1000_TX_DESC(*tx_ring, i); |
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285 buffer_info = &tx_ring->buffer_info[i]; |
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286 u0 = (struct my_u0 *)tx_desc; |
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287 printk(KERN_INFO "T%c[0x%03X] %016llX %016llX %016llX " |
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288 "%04X %3X %016llX %p", |
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289 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : |
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290 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), i, |
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291 (unsigned long long)le64_to_cpu(u0->a), |
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292 (unsigned long long)le64_to_cpu(u0->b), |
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293 (unsigned long long)buffer_info->dma, |
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294 buffer_info->length, buffer_info->next_to_watch, |
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295 (unsigned long long)buffer_info->time_stamp, |
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296 buffer_info->skb); |
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297 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
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298 printk(KERN_CONT " NTC/U\n"); |
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299 else if (i == tx_ring->next_to_use) |
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300 printk(KERN_CONT " NTU\n"); |
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301 else if (i == tx_ring->next_to_clean) |
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302 printk(KERN_CONT " NTC\n"); |
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303 else |
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304 printk(KERN_CONT "\n"); |
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305 |
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306 if (netif_msg_pktdata(adapter) && buffer_info->dma != 0) |
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307 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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308 16, 1, phys_to_virt(buffer_info->dma), |
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309 buffer_info->length, true); |
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310 } |
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311 |
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312 /* Print Rx Ring Summary */ |
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313 rx_ring_summary: |
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314 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
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315 printk(KERN_INFO "Queue [NTU] [NTC]\n"); |
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316 printk(KERN_INFO " %5d %5X %5X\n", 0, |
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317 rx_ring->next_to_use, rx_ring->next_to_clean); |
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318 |
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319 /* Print Rx Ring */ |
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320 if (!netif_msg_rx_status(adapter)) |
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321 goto exit; |
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322 |
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323 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
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324 switch (adapter->rx_ps_pages) { |
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325 case 1: |
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326 case 2: |
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327 case 3: |
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328 /* [Extended] Packet Split Receive Descriptor Format |
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329 * |
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330 * +-----------------------------------------------------+ |
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331 * 0 | Buffer Address 0 [63:0] | |
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332 * +-----------------------------------------------------+ |
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333 * 8 | Buffer Address 1 [63:0] | |
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334 * +-----------------------------------------------------+ |
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335 * 16 | Buffer Address 2 [63:0] | |
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336 * +-----------------------------------------------------+ |
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337 * 24 | Buffer Address 3 [63:0] | |
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338 * +-----------------------------------------------------+ |
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339 */ |
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340 printk(KERN_INFO "R [desc] [buffer 0 63:0 ] " |
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341 "[buffer 1 63:0 ] " |
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342 "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] " |
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343 "[bi->skb] <-- Ext Pkt Split format\n"); |
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344 /* [Extended] Receive Descriptor (Write-Back) Format |
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345 * |
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346 * 63 48 47 32 31 13 12 8 7 4 3 0 |
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347 * +------------------------------------------------------+ |
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348 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | |
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349 * | Checksum | Ident | | Queue | | Type | |
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350 * +------------------------------------------------------+ |
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351 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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352 * +------------------------------------------------------+ |
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353 * 63 48 47 32 31 20 19 0 |
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354 */ |
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355 printk(KERN_INFO "RWB[desc] [ck ipid mrqhsh] " |
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356 "[vl l0 ee es] " |
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357 "[ l3 l2 l1 hs] [reserved ] ---------------- " |
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358 "[bi->skb] <-- Ext Rx Write-Back format\n"); |
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359 for (i = 0; i < rx_ring->count; i++) { |
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360 buffer_info = &rx_ring->buffer_info[i]; |
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361 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); |
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362 u1 = (struct my_u1 *)rx_desc_ps; |
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363 staterr = |
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364 le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
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365 if (staterr & E1000_RXD_STAT_DD) { |
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366 /* Descriptor Done */ |
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367 printk(KERN_INFO "RWB[0x%03X] %016llX " |
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368 "%016llX %016llX %016llX " |
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369 "---------------- %p", i, |
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370 (unsigned long long)le64_to_cpu(u1->a), |
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371 (unsigned long long)le64_to_cpu(u1->b), |
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372 (unsigned long long)le64_to_cpu(u1->c), |
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373 (unsigned long long)le64_to_cpu(u1->d), |
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374 buffer_info->skb); |
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375 } else { |
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376 printk(KERN_INFO "R [0x%03X] %016llX " |
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377 "%016llX %016llX %016llX %016llX %p", i, |
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378 (unsigned long long)le64_to_cpu(u1->a), |
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379 (unsigned long long)le64_to_cpu(u1->b), |
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380 (unsigned long long)le64_to_cpu(u1->c), |
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381 (unsigned long long)le64_to_cpu(u1->d), |
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382 (unsigned long long)buffer_info->dma, |
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383 buffer_info->skb); |
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384 |
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385 if (netif_msg_pktdata(adapter)) |
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386 print_hex_dump(KERN_INFO, "", |
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387 DUMP_PREFIX_ADDRESS, 16, 1, |
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388 phys_to_virt(buffer_info->dma), |
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389 adapter->rx_ps_bsize0, true); |
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390 } |
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391 |
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392 if (i == rx_ring->next_to_use) |
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393 printk(KERN_CONT " NTU\n"); |
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394 else if (i == rx_ring->next_to_clean) |
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395 printk(KERN_CONT " NTC\n"); |
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396 else |
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397 printk(KERN_CONT "\n"); |
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398 } |
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399 break; |
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400 default: |
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401 case 0: |
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402 /* Extended Receive Descriptor (Read) Format |
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403 * |
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404 * +-----------------------------------------------------+ |
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405 * 0 | Buffer Address [63:0] | |
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406 * +-----------------------------------------------------+ |
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407 * 8 | Reserved | |
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408 * +-----------------------------------------------------+ |
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409 */ |
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410 printk(KERN_INFO "R [desc] [buf addr 63:0 ] " |
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411 "[reserved 63:0 ] [bi->dma ] " |
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412 "[bi->skb] <-- Ext (Read) format\n"); |
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413 /* Extended Receive Descriptor (Write-Back) Format |
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414 * |
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415 * 63 48 47 32 31 24 23 4 3 0 |
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416 * +------------------------------------------------------+ |
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417 * | RSS Hash | | | | |
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418 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | |
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419 * | Packet | IP | | | Type | |
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420 * | Checksum | Ident | | | | |
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421 * +------------------------------------------------------+ |
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422 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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423 * +------------------------------------------------------+ |
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424 * 63 48 47 32 31 20 19 0 |
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425 */ |
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426 printk(KERN_INFO "RWB[desc] [cs ipid mrq] " |
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427 "[vt ln xe xs] " |
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428 "[bi->skb] <-- Ext (Write-Back) format\n"); |
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429 |
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430 for (i = 0; i < rx_ring->count; i++) { |
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431 buffer_info = &rx_ring->buffer_info[i]; |
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432 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
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433 u1 = (struct my_u1 *)rx_desc; |
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434 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
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435 if (staterr & E1000_RXD_STAT_DD) { |
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436 /* Descriptor Done */ |
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437 printk(KERN_INFO "RWB[0x%03X] %016llX " |
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438 "%016llX ---------------- %p", i, |
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439 (unsigned long long)le64_to_cpu(u1->a), |
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440 (unsigned long long)le64_to_cpu(u1->b), |
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441 buffer_info->skb); |
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442 } else { |
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443 printk(KERN_INFO "R [0x%03X] %016llX " |
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444 "%016llX %016llX %p", i, |
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445 (unsigned long long)le64_to_cpu(u1->a), |
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446 (unsigned long long)le64_to_cpu(u1->b), |
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447 (unsigned long long)buffer_info->dma, |
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448 buffer_info->skb); |
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449 |
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450 if (netif_msg_pktdata(adapter)) |
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451 print_hex_dump(KERN_INFO, "", |
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452 DUMP_PREFIX_ADDRESS, 16, |
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453 1, |
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454 phys_to_virt |
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455 (buffer_info->dma), |
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456 adapter->rx_buffer_len, |
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457 true); |
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458 } |
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459 |
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460 if (i == rx_ring->next_to_use) |
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461 printk(KERN_CONT " NTU\n"); |
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462 else if (i == rx_ring->next_to_clean) |
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463 printk(KERN_CONT " NTC\n"); |
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464 else |
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465 printk(KERN_CONT "\n"); |
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466 } |
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467 } |
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468 |
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469 exit: |
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470 return; |
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471 } |
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472 |
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473 /** |
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474 * e1000_desc_unused - calculate if we have unused descriptors |
|
475 **/ |
|
476 static int e1000_desc_unused(struct e1000_ring *ring) |
|
477 { |
|
478 if (ring->next_to_clean > ring->next_to_use) |
|
479 return ring->next_to_clean - ring->next_to_use - 1; |
|
480 |
|
481 return ring->count + ring->next_to_clean - ring->next_to_use - 1; |
|
482 } |
|
483 |
|
484 /** |
|
485 * e1000_receive_skb - helper function to handle Rx indications |
|
486 * @adapter: board private structure |
|
487 * @status: descriptor status field as written by hardware |
|
488 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
489 * @skb: pointer to sk_buff to be indicated to stack |
|
490 **/ |
|
491 static void e1000_receive_skb(struct e1000_adapter *adapter, |
|
492 struct net_device *netdev, struct sk_buff *skb, |
|
493 u8 status, __le16 vlan) |
|
494 { |
|
495 u16 tag = le16_to_cpu(vlan); |
|
496 skb->protocol = eth_type_trans(skb, netdev); |
|
497 |
|
498 if (status & E1000_RXD_STAT_VP) |
|
499 __vlan_hwaccel_put_tag(skb, tag); |
|
500 |
|
501 napi_gro_receive(&adapter->napi, skb); |
|
502 } |
|
503 |
|
504 /** |
|
505 * e1000_rx_checksum - Receive Checksum Offload |
|
506 * @adapter: board private structure |
|
507 * @status_err: receive descriptor status and error fields |
|
508 * @csum: receive descriptor csum field |
|
509 * @sk_buff: socket buffer with received data |
|
510 **/ |
|
511 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
512 u32 csum, struct sk_buff *skb) |
|
513 { |
|
514 u16 status = (u16)status_err; |
|
515 u8 errors = (u8)(status_err >> 24); |
|
516 |
|
517 skb_checksum_none_assert(skb); |
|
518 |
|
519 /* Ignore Checksum bit is set */ |
|
520 if (status & E1000_RXD_STAT_IXSM) |
|
521 return; |
|
522 /* TCP/UDP checksum error bit is set */ |
|
523 if (errors & E1000_RXD_ERR_TCPE) { |
|
524 /* let the stack verify checksum errors */ |
|
525 adapter->hw_csum_err++; |
|
526 return; |
|
527 } |
|
528 |
|
529 /* TCP/UDP Checksum has not been calculated */ |
|
530 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
531 return; |
|
532 |
|
533 /* It must be a TCP or UDP packet with a valid checksum */ |
|
534 if (status & E1000_RXD_STAT_TCPCS) { |
|
535 /* TCP checksum is good */ |
|
536 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
537 } else { |
|
538 /* |
|
539 * IP fragment with UDP payload |
|
540 * Hardware complements the payload checksum, so we undo it |
|
541 * and then put the value in host order for further stack use. |
|
542 */ |
|
543 __sum16 sum = (__force __sum16)htons(csum); |
|
544 skb->csum = csum_unfold(~sum); |
|
545 skb->ip_summed = CHECKSUM_COMPLETE; |
|
546 } |
|
547 adapter->hw_csum_good++; |
|
548 } |
|
549 |
|
550 /** |
|
551 * e1000e_update_tail_wa - helper function for e1000e_update_[rt]dt_wa() |
|
552 * @hw: pointer to the HW structure |
|
553 * @tail: address of tail descriptor register |
|
554 * @i: value to write to tail descriptor register |
|
555 * |
|
556 * When updating the tail register, the ME could be accessing Host CSR |
|
557 * registers at the same time. Normally, this is handled in h/w by an |
|
558 * arbiter but on some parts there is a bug that acknowledges Host accesses |
|
559 * later than it should which could result in the descriptor register to |
|
560 * have an incorrect value. Workaround this by checking the FWSM register |
|
561 * which has bit 24 set while ME is accessing Host CSR registers, wait |
|
562 * if it is set and try again a number of times. |
|
563 **/ |
|
564 static inline s32 e1000e_update_tail_wa(struct e1000_hw *hw, u8 __iomem * tail, |
|
565 unsigned int i) |
|
566 { |
|
567 unsigned int j = 0; |
|
568 |
|
569 while ((j++ < E1000_ICH_FWSM_PCIM2PCI_COUNT) && |
|
570 (er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI)) |
|
571 udelay(50); |
|
572 |
|
573 writel(i, tail); |
|
574 |
|
575 if ((j == E1000_ICH_FWSM_PCIM2PCI_COUNT) && (i != readl(tail))) |
|
576 return E1000_ERR_SWFW_SYNC; |
|
577 |
|
578 return 0; |
|
579 } |
|
580 |
|
581 static void e1000e_update_rdt_wa(struct e1000_adapter *adapter, unsigned int i) |
|
582 { |
|
583 u8 __iomem *tail = (adapter->hw.hw_addr + adapter->rx_ring->tail); |
|
584 struct e1000_hw *hw = &adapter->hw; |
|
585 |
|
586 if (e1000e_update_tail_wa(hw, tail, i)) { |
|
587 u32 rctl = er32(RCTL); |
|
588 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
589 e_err("ME firmware caused invalid RDT - resetting\n"); |
|
590 schedule_work(&adapter->reset_task); |
|
591 } |
|
592 } |
|
593 |
|
594 static void e1000e_update_tdt_wa(struct e1000_adapter *adapter, unsigned int i) |
|
595 { |
|
596 u8 __iomem *tail = (adapter->hw.hw_addr + adapter->tx_ring->tail); |
|
597 struct e1000_hw *hw = &adapter->hw; |
|
598 |
|
599 if (e1000e_update_tail_wa(hw, tail, i)) { |
|
600 u32 tctl = er32(TCTL); |
|
601 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
602 e_err("ME firmware caused invalid TDT - resetting\n"); |
|
603 schedule_work(&adapter->reset_task); |
|
604 } |
|
605 } |
|
606 |
|
607 /** |
|
608 * e1000_alloc_rx_buffers - Replace used receive buffers |
|
609 * @adapter: address of board private structure |
|
610 **/ |
|
611 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
612 int cleaned_count, gfp_t gfp) |
|
613 { |
|
614 struct net_device *netdev = adapter->netdev; |
|
615 struct pci_dev *pdev = adapter->pdev; |
|
616 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
617 union e1000_rx_desc_extended *rx_desc; |
|
618 struct e1000_buffer *buffer_info; |
|
619 struct sk_buff *skb; |
|
620 unsigned int i; |
|
621 unsigned int bufsz = adapter->rx_buffer_len; |
|
622 |
|
623 i = rx_ring->next_to_use; |
|
624 buffer_info = &rx_ring->buffer_info[i]; |
|
625 |
|
626 while (cleaned_count--) { |
|
627 skb = buffer_info->skb; |
|
628 if (skb) { |
|
629 skb_trim(skb, 0); |
|
630 goto map_skb; |
|
631 } |
|
632 |
|
633 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
634 if (!skb) { |
|
635 /* Better luck next round */ |
|
636 adapter->alloc_rx_buff_failed++; |
|
637 break; |
|
638 } |
|
639 |
|
640 buffer_info->skb = skb; |
|
641 map_skb: |
|
642 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
643 adapter->rx_buffer_len, |
|
644 DMA_FROM_DEVICE); |
|
645 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
646 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
647 adapter->rx_dma_failed++; |
|
648 break; |
|
649 } |
|
650 |
|
651 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
652 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
653 |
|
654 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
655 /* |
|
656 * Force memory writes to complete before letting h/w |
|
657 * know there are new descriptors to fetch. (Only |
|
658 * applicable for weak-ordered memory model archs, |
|
659 * such as IA-64). |
|
660 */ |
|
661 wmb(); |
|
662 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
663 e1000e_update_rdt_wa(adapter, i); |
|
664 else |
|
665 writel(i, adapter->hw.hw_addr + rx_ring->tail); |
|
666 } |
|
667 i++; |
|
668 if (i == rx_ring->count) |
|
669 i = 0; |
|
670 buffer_info = &rx_ring->buffer_info[i]; |
|
671 } |
|
672 |
|
673 rx_ring->next_to_use = i; |
|
674 } |
|
675 |
|
676 /** |
|
677 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
678 * @adapter: address of board private structure |
|
679 **/ |
|
680 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
|
681 int cleaned_count, gfp_t gfp) |
|
682 { |
|
683 struct net_device *netdev = adapter->netdev; |
|
684 struct pci_dev *pdev = adapter->pdev; |
|
685 union e1000_rx_desc_packet_split *rx_desc; |
|
686 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
687 struct e1000_buffer *buffer_info; |
|
688 struct e1000_ps_page *ps_page; |
|
689 struct sk_buff *skb; |
|
690 unsigned int i, j; |
|
691 |
|
692 i = rx_ring->next_to_use; |
|
693 buffer_info = &rx_ring->buffer_info[i]; |
|
694 |
|
695 while (cleaned_count--) { |
|
696 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
697 |
|
698 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
699 ps_page = &buffer_info->ps_pages[j]; |
|
700 if (j >= adapter->rx_ps_pages) { |
|
701 /* all unused desc entries get hw null ptr */ |
|
702 rx_desc->read.buffer_addr[j + 1] = |
|
703 ~cpu_to_le64(0); |
|
704 continue; |
|
705 } |
|
706 if (!ps_page->page) { |
|
707 ps_page->page = alloc_page(gfp); |
|
708 if (!ps_page->page) { |
|
709 adapter->alloc_rx_buff_failed++; |
|
710 goto no_buffers; |
|
711 } |
|
712 ps_page->dma = dma_map_page(&pdev->dev, |
|
713 ps_page->page, |
|
714 0, PAGE_SIZE, |
|
715 DMA_FROM_DEVICE); |
|
716 if (dma_mapping_error(&pdev->dev, |
|
717 ps_page->dma)) { |
|
718 dev_err(&adapter->pdev->dev, |
|
719 "Rx DMA page map failed\n"); |
|
720 adapter->rx_dma_failed++; |
|
721 goto no_buffers; |
|
722 } |
|
723 } |
|
724 /* |
|
725 * Refresh the desc even if buffer_addrs |
|
726 * didn't change because each write-back |
|
727 * erases this info. |
|
728 */ |
|
729 rx_desc->read.buffer_addr[j + 1] = |
|
730 cpu_to_le64(ps_page->dma); |
|
731 } |
|
732 |
|
733 skb = __netdev_alloc_skb_ip_align(netdev, |
|
734 adapter->rx_ps_bsize0, |
|
735 gfp); |
|
736 |
|
737 if (!skb) { |
|
738 adapter->alloc_rx_buff_failed++; |
|
739 break; |
|
740 } |
|
741 |
|
742 buffer_info->skb = skb; |
|
743 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
744 adapter->rx_ps_bsize0, |
|
745 DMA_FROM_DEVICE); |
|
746 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
747 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
748 adapter->rx_dma_failed++; |
|
749 /* cleanup skb */ |
|
750 dev_kfree_skb_any(skb); |
|
751 buffer_info->skb = NULL; |
|
752 break; |
|
753 } |
|
754 |
|
755 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
756 |
|
757 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
758 /* |
|
759 * Force memory writes to complete before letting h/w |
|
760 * know there are new descriptors to fetch. (Only |
|
761 * applicable for weak-ordered memory model archs, |
|
762 * such as IA-64). |
|
763 */ |
|
764 wmb(); |
|
765 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
766 e1000e_update_rdt_wa(adapter, i << 1); |
|
767 else |
|
768 writel(i << 1, |
|
769 adapter->hw.hw_addr + rx_ring->tail); |
|
770 } |
|
771 |
|
772 i++; |
|
773 if (i == rx_ring->count) |
|
774 i = 0; |
|
775 buffer_info = &rx_ring->buffer_info[i]; |
|
776 } |
|
777 |
|
778 no_buffers: |
|
779 rx_ring->next_to_use = i; |
|
780 } |
|
781 |
|
782 /** |
|
783 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
784 * @adapter: address of board private structure |
|
785 * @cleaned_count: number of buffers to allocate this pass |
|
786 **/ |
|
787 |
|
788 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
|
789 int cleaned_count, gfp_t gfp) |
|
790 { |
|
791 struct net_device *netdev = adapter->netdev; |
|
792 struct pci_dev *pdev = adapter->pdev; |
|
793 union e1000_rx_desc_extended *rx_desc; |
|
794 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
795 struct e1000_buffer *buffer_info; |
|
796 struct sk_buff *skb; |
|
797 unsigned int i; |
|
798 unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
|
799 |
|
800 i = rx_ring->next_to_use; |
|
801 buffer_info = &rx_ring->buffer_info[i]; |
|
802 |
|
803 while (cleaned_count--) { |
|
804 skb = buffer_info->skb; |
|
805 if (skb) { |
|
806 skb_trim(skb, 0); |
|
807 goto check_page; |
|
808 } |
|
809 |
|
810 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
811 if (unlikely(!skb)) { |
|
812 /* Better luck next round */ |
|
813 adapter->alloc_rx_buff_failed++; |
|
814 break; |
|
815 } |
|
816 |
|
817 buffer_info->skb = skb; |
|
818 check_page: |
|
819 /* allocate a new page if necessary */ |
|
820 if (!buffer_info->page) { |
|
821 buffer_info->page = alloc_page(gfp); |
|
822 if (unlikely(!buffer_info->page)) { |
|
823 adapter->alloc_rx_buff_failed++; |
|
824 break; |
|
825 } |
|
826 } |
|
827 |
|
828 if (!buffer_info->dma) |
|
829 buffer_info->dma = dma_map_page(&pdev->dev, |
|
830 buffer_info->page, 0, |
|
831 PAGE_SIZE, |
|
832 DMA_FROM_DEVICE); |
|
833 |
|
834 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
835 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
836 |
|
837 if (unlikely(++i == rx_ring->count)) |
|
838 i = 0; |
|
839 buffer_info = &rx_ring->buffer_info[i]; |
|
840 } |
|
841 |
|
842 if (likely(rx_ring->next_to_use != i)) { |
|
843 rx_ring->next_to_use = i; |
|
844 if (unlikely(i-- == 0)) |
|
845 i = (rx_ring->count - 1); |
|
846 |
|
847 /* Force memory writes to complete before letting h/w |
|
848 * know there are new descriptors to fetch. (Only |
|
849 * applicable for weak-ordered memory model archs, |
|
850 * such as IA-64). */ |
|
851 wmb(); |
|
852 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
853 e1000e_update_rdt_wa(adapter, i); |
|
854 else |
|
855 writel(i, adapter->hw.hw_addr + rx_ring->tail); |
|
856 } |
|
857 } |
|
858 |
|
859 /** |
|
860 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
861 * @adapter: board private structure |
|
862 * |
|
863 * the return value indicates whether actual cleaning was done, there |
|
864 * is no guarantee that everything was cleaned |
|
865 **/ |
|
866 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
867 int *work_done, int work_to_do) |
|
868 { |
|
869 struct net_device *netdev = adapter->netdev; |
|
870 struct pci_dev *pdev = adapter->pdev; |
|
871 struct e1000_hw *hw = &adapter->hw; |
|
872 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
873 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
874 struct e1000_buffer *buffer_info, *next_buffer; |
|
875 u32 length, staterr; |
|
876 unsigned int i; |
|
877 int cleaned_count = 0; |
|
878 bool cleaned = 0; |
|
879 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
880 |
|
881 i = rx_ring->next_to_clean; |
|
882 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
883 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
884 buffer_info = &rx_ring->buffer_info[i]; |
|
885 |
|
886 while (staterr & E1000_RXD_STAT_DD) { |
|
887 struct sk_buff *skb; |
|
888 |
|
889 if (*work_done >= work_to_do) |
|
890 break; |
|
891 (*work_done)++; |
|
892 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
893 |
|
894 skb = buffer_info->skb; |
|
895 buffer_info->skb = NULL; |
|
896 |
|
897 prefetch(skb->data - NET_IP_ALIGN); |
|
898 |
|
899 i++; |
|
900 if (i == rx_ring->count) |
|
901 i = 0; |
|
902 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
903 prefetch(next_rxd); |
|
904 |
|
905 next_buffer = &rx_ring->buffer_info[i]; |
|
906 |
|
907 cleaned = 1; |
|
908 cleaned_count++; |
|
909 dma_unmap_single(&pdev->dev, |
|
910 buffer_info->dma, |
|
911 adapter->rx_buffer_len, |
|
912 DMA_FROM_DEVICE); |
|
913 buffer_info->dma = 0; |
|
914 |
|
915 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
916 |
|
917 /* |
|
918 * !EOP means multiple descriptors were used to store a single |
|
919 * packet, if that's the case we need to toss it. In fact, we |
|
920 * need to toss every packet with the EOP bit clear and the |
|
921 * next frame that _does_ have the EOP bit set, as it is by |
|
922 * definition only a frame fragment |
|
923 */ |
|
924 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
|
925 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
926 |
|
927 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
928 /* All receives must fit into a single buffer */ |
|
929 e_dbg("Receive packet consumed multiple buffers\n"); |
|
930 /* recycle */ |
|
931 buffer_info->skb = skb; |
|
932 if (staterr & E1000_RXD_STAT_EOP) |
|
933 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
934 goto next_desc; |
|
935 } |
|
936 |
|
937 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
|
938 /* recycle */ |
|
939 buffer_info->skb = skb; |
|
940 goto next_desc; |
|
941 } |
|
942 |
|
943 /* adjust length to remove Ethernet CRC */ |
|
944 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) |
|
945 length -= 4; |
|
946 |
|
947 total_rx_bytes += length; |
|
948 total_rx_packets++; |
|
949 |
|
950 /* |
|
951 * code added for copybreak, this should improve |
|
952 * performance for small packets with large amounts |
|
953 * of reassembly being done in the stack |
|
954 */ |
|
955 if (length < copybreak) { |
|
956 struct sk_buff *new_skb = |
|
957 netdev_alloc_skb_ip_align(netdev, length); |
|
958 if (new_skb) { |
|
959 skb_copy_to_linear_data_offset(new_skb, |
|
960 -NET_IP_ALIGN, |
|
961 (skb->data - |
|
962 NET_IP_ALIGN), |
|
963 (length + |
|
964 NET_IP_ALIGN)); |
|
965 /* save the skb in buffer_info as good */ |
|
966 buffer_info->skb = skb; |
|
967 skb = new_skb; |
|
968 } |
|
969 /* else just continue with the old one */ |
|
970 } |
|
971 /* end copybreak code */ |
|
972 skb_put(skb, length); |
|
973 |
|
974 /* Receive Checksum Offload */ |
|
975 e1000_rx_checksum(adapter, staterr, |
|
976 le16_to_cpu(rx_desc->wb.lower.hi_dword. |
|
977 csum_ip.csum), skb); |
|
978 |
|
979 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
980 rx_desc->wb.upper.vlan); |
|
981 |
|
982 next_desc: |
|
983 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
984 |
|
985 /* return some buffers to hardware, one at a time is too slow */ |
|
986 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
987 adapter->alloc_rx_buf(adapter, cleaned_count, |
|
988 GFP_ATOMIC); |
|
989 cleaned_count = 0; |
|
990 } |
|
991 |
|
992 /* use prefetched values */ |
|
993 rx_desc = next_rxd; |
|
994 buffer_info = next_buffer; |
|
995 |
|
996 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
997 } |
|
998 rx_ring->next_to_clean = i; |
|
999 |
|
1000 cleaned_count = e1000_desc_unused(rx_ring); |
|
1001 if (cleaned_count) |
|
1002 adapter->alloc_rx_buf(adapter, cleaned_count, GFP_ATOMIC); |
|
1003 |
|
1004 adapter->total_rx_bytes += total_rx_bytes; |
|
1005 adapter->total_rx_packets += total_rx_packets; |
|
1006 return cleaned; |
|
1007 } |
|
1008 |
|
1009 static void e1000_put_txbuf(struct e1000_adapter *adapter, |
|
1010 struct e1000_buffer *buffer_info) |
|
1011 { |
|
1012 if (buffer_info->dma) { |
|
1013 if (buffer_info->mapped_as_page) |
|
1014 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1015 buffer_info->length, DMA_TO_DEVICE); |
|
1016 else |
|
1017 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1018 buffer_info->length, DMA_TO_DEVICE); |
|
1019 buffer_info->dma = 0; |
|
1020 } |
|
1021 if (buffer_info->skb) { |
|
1022 dev_kfree_skb_any(buffer_info->skb); |
|
1023 buffer_info->skb = NULL; |
|
1024 } |
|
1025 buffer_info->time_stamp = 0; |
|
1026 } |
|
1027 |
|
1028 static void e1000_print_hw_hang(struct work_struct *work) |
|
1029 { |
|
1030 struct e1000_adapter *adapter = container_of(work, |
|
1031 struct e1000_adapter, |
|
1032 print_hang_task); |
|
1033 struct net_device *netdev = adapter->netdev; |
|
1034 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1035 unsigned int i = tx_ring->next_to_clean; |
|
1036 unsigned int eop = tx_ring->buffer_info[i].next_to_watch; |
|
1037 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1038 struct e1000_hw *hw = &adapter->hw; |
|
1039 u16 phy_status, phy_1000t_status, phy_ext_status; |
|
1040 u16 pci_status; |
|
1041 |
|
1042 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1043 return; |
|
1044 |
|
1045 if (!adapter->tx_hang_recheck && |
|
1046 (adapter->flags2 & FLAG2_DMA_BURST)) { |
|
1047 /* May be block on write-back, flush and detect again |
|
1048 * flush pending descriptor writebacks to memory |
|
1049 */ |
|
1050 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1051 /* execute the writes immediately */ |
|
1052 e1e_flush(); |
|
1053 adapter->tx_hang_recheck = true; |
|
1054 return; |
|
1055 } |
|
1056 /* Real hang detected */ |
|
1057 adapter->tx_hang_recheck = false; |
|
1058 netif_stop_queue(netdev); |
|
1059 |
|
1060 e1e_rphy(hw, PHY_STATUS, &phy_status); |
|
1061 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); |
|
1062 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); |
|
1063 |
|
1064 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
|
1065 |
|
1066 /* detected Hardware unit hang */ |
|
1067 e_err("Detected Hardware Unit Hang:\n" |
|
1068 " TDH <%x>\n" |
|
1069 " TDT <%x>\n" |
|
1070 " next_to_use <%x>\n" |
|
1071 " next_to_clean <%x>\n" |
|
1072 "buffer_info[next_to_clean]:\n" |
|
1073 " time_stamp <%lx>\n" |
|
1074 " next_to_watch <%x>\n" |
|
1075 " jiffies <%lx>\n" |
|
1076 " next_to_watch.status <%x>\n" |
|
1077 "MAC Status <%x>\n" |
|
1078 "PHY Status <%x>\n" |
|
1079 "PHY 1000BASE-T Status <%x>\n" |
|
1080 "PHY Extended Status <%x>\n" |
|
1081 "PCI Status <%x>\n", |
|
1082 readl(adapter->hw.hw_addr + tx_ring->head), |
|
1083 readl(adapter->hw.hw_addr + tx_ring->tail), |
|
1084 tx_ring->next_to_use, |
|
1085 tx_ring->next_to_clean, |
|
1086 tx_ring->buffer_info[eop].time_stamp, |
|
1087 eop, |
|
1088 jiffies, |
|
1089 eop_desc->upper.fields.status, |
|
1090 er32(STATUS), |
|
1091 phy_status, |
|
1092 phy_1000t_status, |
|
1093 phy_ext_status, |
|
1094 pci_status); |
|
1095 } |
|
1096 |
|
1097 /** |
|
1098 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
1099 * @adapter: board private structure |
|
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_adapter *adapter) |
|
1105 { |
|
1106 struct net_device *netdev = adapter->netdev; |
|
1107 struct e1000_hw *hw = &adapter->hw; |
|
1108 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
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 |
|
1115 i = tx_ring->next_to_clean; |
|
1116 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1117 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1118 |
|
1119 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
1120 (count < tx_ring->count)) { |
|
1121 bool cleaned = false; |
|
1122 rmb(); /* read buffer_info after eop_desc */ |
|
1123 for (; !cleaned; count++) { |
|
1124 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
1125 buffer_info = &tx_ring->buffer_info[i]; |
|
1126 cleaned = (i == eop); |
|
1127 |
|
1128 if (cleaned) { |
|
1129 total_tx_packets += buffer_info->segs; |
|
1130 total_tx_bytes += buffer_info->bytecount; |
|
1131 } |
|
1132 |
|
1133 e1000_put_txbuf(adapter, buffer_info); |
|
1134 tx_desc->upper.data = 0; |
|
1135 |
|
1136 i++; |
|
1137 if (i == tx_ring->count) |
|
1138 i = 0; |
|
1139 } |
|
1140 |
|
1141 if (i == tx_ring->next_to_use) |
|
1142 break; |
|
1143 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1144 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1145 } |
|
1146 |
|
1147 tx_ring->next_to_clean = i; |
|
1148 |
|
1149 #define TX_WAKE_THRESHOLD 32 |
|
1150 if (count && netif_carrier_ok(netdev) && |
|
1151 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { |
|
1152 /* Make sure that anybody stopping the queue after this |
|
1153 * sees the new next_to_clean. |
|
1154 */ |
|
1155 smp_mb(); |
|
1156 |
|
1157 if (netif_queue_stopped(netdev) && |
|
1158 !(test_bit(__E1000_DOWN, &adapter->state))) { |
|
1159 netif_wake_queue(netdev); |
|
1160 ++adapter->restart_queue; |
|
1161 } |
|
1162 } |
|
1163 |
|
1164 if (adapter->detect_tx_hung) { |
|
1165 /* |
|
1166 * Detect a transmit hang in hardware, this serializes the |
|
1167 * check with the clearing of time_stamp and movement of i |
|
1168 */ |
|
1169 adapter->detect_tx_hung = 0; |
|
1170 if (tx_ring->buffer_info[i].time_stamp && |
|
1171 time_after(jiffies, tx_ring->buffer_info[i].time_stamp |
|
1172 + (adapter->tx_timeout_factor * HZ)) && |
|
1173 !(er32(STATUS) & E1000_STATUS_TXOFF)) |
|
1174 schedule_work(&adapter->print_hang_task); |
|
1175 else |
|
1176 adapter->tx_hang_recheck = false; |
|
1177 } |
|
1178 adapter->total_tx_bytes += total_tx_bytes; |
|
1179 adapter->total_tx_packets += total_tx_packets; |
|
1180 return count < tx_ring->count; |
|
1181 } |
|
1182 |
|
1183 /** |
|
1184 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
1185 * @adapter: board private structure |
|
1186 * |
|
1187 * the return value indicates whether actual cleaning was done, there |
|
1188 * is no guarantee that everything was cleaned |
|
1189 **/ |
|
1190 static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
|
1191 int *work_done, int work_to_do) |
|
1192 { |
|
1193 struct e1000_hw *hw = &adapter->hw; |
|
1194 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
1195 struct net_device *netdev = adapter->netdev; |
|
1196 struct pci_dev *pdev = adapter->pdev; |
|
1197 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1198 struct e1000_buffer *buffer_info, *next_buffer; |
|
1199 struct e1000_ps_page *ps_page; |
|
1200 struct sk_buff *skb; |
|
1201 unsigned int i, j; |
|
1202 u32 length, staterr; |
|
1203 int cleaned_count = 0; |
|
1204 bool cleaned = 0; |
|
1205 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1206 |
|
1207 i = rx_ring->next_to_clean; |
|
1208 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
1209 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1210 buffer_info = &rx_ring->buffer_info[i]; |
|
1211 |
|
1212 while (staterr & E1000_RXD_STAT_DD) { |
|
1213 if (*work_done >= work_to_do) |
|
1214 break; |
|
1215 (*work_done)++; |
|
1216 skb = buffer_info->skb; |
|
1217 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1218 |
|
1219 /* in the packet split case this is header only */ |
|
1220 prefetch(skb->data - NET_IP_ALIGN); |
|
1221 |
|
1222 i++; |
|
1223 if (i == rx_ring->count) |
|
1224 i = 0; |
|
1225 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
1226 prefetch(next_rxd); |
|
1227 |
|
1228 next_buffer = &rx_ring->buffer_info[i]; |
|
1229 |
|
1230 cleaned = 1; |
|
1231 cleaned_count++; |
|
1232 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1233 adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
|
1234 buffer_info->dma = 0; |
|
1235 |
|
1236 /* see !EOP comment in other Rx routine */ |
|
1237 if (!(staterr & E1000_RXD_STAT_EOP)) |
|
1238 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
1239 |
|
1240 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
1241 e_dbg("Packet Split buffers didn't pick up the full " |
|
1242 "packet\n"); |
|
1243 dev_kfree_skb_irq(skb); |
|
1244 if (staterr & E1000_RXD_STAT_EOP) |
|
1245 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1246 goto next_desc; |
|
1247 } |
|
1248 |
|
1249 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
|
1250 dev_kfree_skb_irq(skb); |
|
1251 goto next_desc; |
|
1252 } |
|
1253 |
|
1254 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
1255 |
|
1256 if (!length) { |
|
1257 e_dbg("Last part of the packet spanning multiple " |
|
1258 "descriptors\n"); |
|
1259 dev_kfree_skb_irq(skb); |
|
1260 goto next_desc; |
|
1261 } |
|
1262 |
|
1263 /* Good Receive */ |
|
1264 skb_put(skb, length); |
|
1265 |
|
1266 { |
|
1267 /* |
|
1268 * this looks ugly, but it seems compiler issues make it |
|
1269 * more efficient than reusing j |
|
1270 */ |
|
1271 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
1272 |
|
1273 /* |
|
1274 * page alloc/put takes too long and effects small packet |
|
1275 * throughput, so unsplit small packets and save the alloc/put |
|
1276 * only valid in softirq (napi) context to call kmap_* |
|
1277 */ |
|
1278 if (l1 && (l1 <= copybreak) && |
|
1279 ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
1280 u8 *vaddr; |
|
1281 |
|
1282 ps_page = &buffer_info->ps_pages[0]; |
|
1283 |
|
1284 /* |
|
1285 * there is no documentation about how to call |
|
1286 * kmap_atomic, so we can't hold the mapping |
|
1287 * very long |
|
1288 */ |
|
1289 dma_sync_single_for_cpu(&pdev->dev, ps_page->dma, |
|
1290 PAGE_SIZE, DMA_FROM_DEVICE); |
|
1291 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); |
|
1292 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
1293 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); |
|
1294 dma_sync_single_for_device(&pdev->dev, ps_page->dma, |
|
1295 PAGE_SIZE, DMA_FROM_DEVICE); |
|
1296 |
|
1297 /* remove the CRC */ |
|
1298 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) |
|
1299 l1 -= 4; |
|
1300 |
|
1301 skb_put(skb, l1); |
|
1302 goto copydone; |
|
1303 } /* if */ |
|
1304 } |
|
1305 |
|
1306 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1307 length = le16_to_cpu(rx_desc->wb.upper.length[j]); |
|
1308 if (!length) |
|
1309 break; |
|
1310 |
|
1311 ps_page = &buffer_info->ps_pages[j]; |
|
1312 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1313 DMA_FROM_DEVICE); |
|
1314 ps_page->dma = 0; |
|
1315 skb_fill_page_desc(skb, j, ps_page->page, 0, length); |
|
1316 ps_page->page = NULL; |
|
1317 skb->len += length; |
|
1318 skb->data_len += length; |
|
1319 skb->truesize += PAGE_SIZE; |
|
1320 } |
|
1321 |
|
1322 /* strip the ethernet crc, problem is we're using pages now so |
|
1323 * this whole operation can get a little cpu intensive |
|
1324 */ |
|
1325 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) |
|
1326 pskb_trim(skb, skb->len - 4); |
|
1327 |
|
1328 copydone: |
|
1329 total_rx_bytes += skb->len; |
|
1330 total_rx_packets++; |
|
1331 |
|
1332 e1000_rx_checksum(adapter, staterr, le16_to_cpu( |
|
1333 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
|
1334 |
|
1335 if (rx_desc->wb.upper.header_status & |
|
1336 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
|
1337 adapter->rx_hdr_split++; |
|
1338 |
|
1339 e1000_receive_skb(adapter, netdev, skb, |
|
1340 staterr, rx_desc->wb.middle.vlan); |
|
1341 |
|
1342 next_desc: |
|
1343 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
1344 buffer_info->skb = NULL; |
|
1345 |
|
1346 /* return some buffers to hardware, one at a time is too slow */ |
|
1347 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1348 adapter->alloc_rx_buf(adapter, cleaned_count, |
|
1349 GFP_ATOMIC); |
|
1350 cleaned_count = 0; |
|
1351 } |
|
1352 |
|
1353 /* use prefetched values */ |
|
1354 rx_desc = next_rxd; |
|
1355 buffer_info = next_buffer; |
|
1356 |
|
1357 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1358 } |
|
1359 rx_ring->next_to_clean = i; |
|
1360 |
|
1361 cleaned_count = e1000_desc_unused(rx_ring); |
|
1362 if (cleaned_count) |
|
1363 adapter->alloc_rx_buf(adapter, cleaned_count, GFP_ATOMIC); |
|
1364 |
|
1365 adapter->total_rx_bytes += total_rx_bytes; |
|
1366 adapter->total_rx_packets += total_rx_packets; |
|
1367 return cleaned; |
|
1368 } |
|
1369 |
|
1370 /** |
|
1371 * e1000_consume_page - helper function |
|
1372 **/ |
|
1373 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
1374 u16 length) |
|
1375 { |
|
1376 bi->page = NULL; |
|
1377 skb->len += length; |
|
1378 skb->data_len += length; |
|
1379 skb->truesize += PAGE_SIZE; |
|
1380 } |
|
1381 |
|
1382 /** |
|
1383 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
1384 * @adapter: board private structure |
|
1385 * |
|
1386 * the return value indicates whether actual cleaning was done, there |
|
1387 * is no guarantee that everything was cleaned |
|
1388 **/ |
|
1389 |
|
1390 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
|
1391 int *work_done, int work_to_do) |
|
1392 { |
|
1393 struct net_device *netdev = adapter->netdev; |
|
1394 struct pci_dev *pdev = adapter->pdev; |
|
1395 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1396 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
1397 struct e1000_buffer *buffer_info, *next_buffer; |
|
1398 u32 length, staterr; |
|
1399 unsigned int i; |
|
1400 int cleaned_count = 0; |
|
1401 bool cleaned = false; |
|
1402 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
1403 |
|
1404 i = rx_ring->next_to_clean; |
|
1405 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1406 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1407 buffer_info = &rx_ring->buffer_info[i]; |
|
1408 |
|
1409 while (staterr & E1000_RXD_STAT_DD) { |
|
1410 struct sk_buff *skb; |
|
1411 |
|
1412 if (*work_done >= work_to_do) |
|
1413 break; |
|
1414 (*work_done)++; |
|
1415 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1416 |
|
1417 skb = buffer_info->skb; |
|
1418 buffer_info->skb = NULL; |
|
1419 |
|
1420 ++i; |
|
1421 if (i == rx_ring->count) |
|
1422 i = 0; |
|
1423 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1424 prefetch(next_rxd); |
|
1425 |
|
1426 next_buffer = &rx_ring->buffer_info[i]; |
|
1427 |
|
1428 cleaned = true; |
|
1429 cleaned_count++; |
|
1430 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
|
1431 DMA_FROM_DEVICE); |
|
1432 buffer_info->dma = 0; |
|
1433 |
|
1434 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
1435 |
|
1436 /* errors is only valid for DD + EOP descriptors */ |
|
1437 if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
|
1438 (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK))) { |
|
1439 /* recycle both page and skb */ |
|
1440 buffer_info->skb = skb; |
|
1441 /* an error means any chain goes out the window too */ |
|
1442 if (rx_ring->rx_skb_top) |
|
1443 dev_kfree_skb_irq(rx_ring->rx_skb_top); |
|
1444 rx_ring->rx_skb_top = NULL; |
|
1445 goto next_desc; |
|
1446 } |
|
1447 |
|
1448 #define rxtop (rx_ring->rx_skb_top) |
|
1449 if (!(staterr & E1000_RXD_STAT_EOP)) { |
|
1450 /* this descriptor is only the beginning (or middle) */ |
|
1451 if (!rxtop) { |
|
1452 /* this is the beginning of a chain */ |
|
1453 rxtop = skb; |
|
1454 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
1455 0, length); |
|
1456 } else { |
|
1457 /* this is the middle of a chain */ |
|
1458 skb_fill_page_desc(rxtop, |
|
1459 skb_shinfo(rxtop)->nr_frags, |
|
1460 buffer_info->page, 0, length); |
|
1461 /* re-use the skb, only consumed the page */ |
|
1462 buffer_info->skb = skb; |
|
1463 } |
|
1464 e1000_consume_page(buffer_info, rxtop, length); |
|
1465 goto next_desc; |
|
1466 } else { |
|
1467 if (rxtop) { |
|
1468 /* end of the chain */ |
|
1469 skb_fill_page_desc(rxtop, |
|
1470 skb_shinfo(rxtop)->nr_frags, |
|
1471 buffer_info->page, 0, length); |
|
1472 /* re-use the current skb, we only consumed the |
|
1473 * page */ |
|
1474 buffer_info->skb = skb; |
|
1475 skb = rxtop; |
|
1476 rxtop = NULL; |
|
1477 e1000_consume_page(buffer_info, skb, length); |
|
1478 } else { |
|
1479 /* no chain, got EOP, this buf is the packet |
|
1480 * copybreak to save the put_page/alloc_page */ |
|
1481 if (length <= copybreak && |
|
1482 skb_tailroom(skb) >= length) { |
|
1483 u8 *vaddr; |
|
1484 vaddr = kmap_atomic(buffer_info->page, |
|
1485 KM_SKB_DATA_SOFTIRQ); |
|
1486 memcpy(skb_tail_pointer(skb), vaddr, |
|
1487 length); |
|
1488 kunmap_atomic(vaddr, |
|
1489 KM_SKB_DATA_SOFTIRQ); |
|
1490 /* re-use the page, so don't erase |
|
1491 * buffer_info->page */ |
|
1492 skb_put(skb, length); |
|
1493 } else { |
|
1494 skb_fill_page_desc(skb, 0, |
|
1495 buffer_info->page, 0, |
|
1496 length); |
|
1497 e1000_consume_page(buffer_info, skb, |
|
1498 length); |
|
1499 } |
|
1500 } |
|
1501 } |
|
1502 |
|
1503 /* Receive Checksum Offload XXX recompute due to CRC strip? */ |
|
1504 e1000_rx_checksum(adapter, staterr, |
|
1505 le16_to_cpu(rx_desc->wb.lower.hi_dword. |
|
1506 csum_ip.csum), skb); |
|
1507 |
|
1508 /* probably a little skewed due to removing CRC */ |
|
1509 total_rx_bytes += skb->len; |
|
1510 total_rx_packets++; |
|
1511 |
|
1512 /* eth type trans needs skb->data to point to something */ |
|
1513 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
1514 e_err("pskb_may_pull failed.\n"); |
|
1515 dev_kfree_skb_irq(skb); |
|
1516 goto next_desc; |
|
1517 } |
|
1518 |
|
1519 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1520 rx_desc->wb.upper.vlan); |
|
1521 |
|
1522 next_desc: |
|
1523 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1524 |
|
1525 /* return some buffers to hardware, one at a time is too slow */ |
|
1526 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
1527 adapter->alloc_rx_buf(adapter, cleaned_count, |
|
1528 GFP_ATOMIC); |
|
1529 cleaned_count = 0; |
|
1530 } |
|
1531 |
|
1532 /* use prefetched values */ |
|
1533 rx_desc = next_rxd; |
|
1534 buffer_info = next_buffer; |
|
1535 |
|
1536 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1537 } |
|
1538 rx_ring->next_to_clean = i; |
|
1539 |
|
1540 cleaned_count = e1000_desc_unused(rx_ring); |
|
1541 if (cleaned_count) |
|
1542 adapter->alloc_rx_buf(adapter, cleaned_count, GFP_ATOMIC); |
|
1543 |
|
1544 adapter->total_rx_bytes += total_rx_bytes; |
|
1545 adapter->total_rx_packets += total_rx_packets; |
|
1546 return cleaned; |
|
1547 } |
|
1548 |
|
1549 /** |
|
1550 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1551 * @adapter: board private structure |
|
1552 **/ |
|
1553 static void e1000_clean_rx_ring(struct e1000_adapter *adapter) |
|
1554 { |
|
1555 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1556 struct e1000_buffer *buffer_info; |
|
1557 struct e1000_ps_page *ps_page; |
|
1558 struct pci_dev *pdev = adapter->pdev; |
|
1559 unsigned int i, j; |
|
1560 |
|
1561 /* Free all the Rx ring sk_buffs */ |
|
1562 for (i = 0; i < rx_ring->count; i++) { |
|
1563 buffer_info = &rx_ring->buffer_info[i]; |
|
1564 if (buffer_info->dma) { |
|
1565 if (adapter->clean_rx == e1000_clean_rx_irq) |
|
1566 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1567 adapter->rx_buffer_len, |
|
1568 DMA_FROM_DEVICE); |
|
1569 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
|
1570 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
1571 PAGE_SIZE, |
|
1572 DMA_FROM_DEVICE); |
|
1573 else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
|
1574 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1575 adapter->rx_ps_bsize0, |
|
1576 DMA_FROM_DEVICE); |
|
1577 buffer_info->dma = 0; |
|
1578 } |
|
1579 |
|
1580 if (buffer_info->page) { |
|
1581 put_page(buffer_info->page); |
|
1582 buffer_info->page = NULL; |
|
1583 } |
|
1584 |
|
1585 if (buffer_info->skb) { |
|
1586 dev_kfree_skb(buffer_info->skb); |
|
1587 buffer_info->skb = NULL; |
|
1588 } |
|
1589 |
|
1590 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1591 ps_page = &buffer_info->ps_pages[j]; |
|
1592 if (!ps_page->page) |
|
1593 break; |
|
1594 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1595 DMA_FROM_DEVICE); |
|
1596 ps_page->dma = 0; |
|
1597 put_page(ps_page->page); |
|
1598 ps_page->page = NULL; |
|
1599 } |
|
1600 } |
|
1601 |
|
1602 /* there also may be some cached data from a chained receive */ |
|
1603 if (rx_ring->rx_skb_top) { |
|
1604 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1605 rx_ring->rx_skb_top = NULL; |
|
1606 } |
|
1607 |
|
1608 /* Zero out the descriptor ring */ |
|
1609 memset(rx_ring->desc, 0, rx_ring->size); |
|
1610 |
|
1611 rx_ring->next_to_clean = 0; |
|
1612 rx_ring->next_to_use = 0; |
|
1613 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1614 |
|
1615 writel(0, adapter->hw.hw_addr + rx_ring->head); |
|
1616 writel(0, adapter->hw.hw_addr + rx_ring->tail); |
|
1617 } |
|
1618 |
|
1619 static void e1000e_downshift_workaround(struct work_struct *work) |
|
1620 { |
|
1621 struct e1000_adapter *adapter = container_of(work, |
|
1622 struct e1000_adapter, downshift_task); |
|
1623 |
|
1624 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1625 return; |
|
1626 |
|
1627 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
|
1628 } |
|
1629 |
|
1630 /** |
|
1631 * e1000_intr_msi - Interrupt Handler |
|
1632 * @irq: interrupt number |
|
1633 * @data: pointer to a network interface device structure |
|
1634 **/ |
|
1635 static irqreturn_t e1000_intr_msi(int irq, void *data) |
|
1636 { |
|
1637 struct net_device *netdev = data; |
|
1638 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1639 struct e1000_hw *hw = &adapter->hw; |
|
1640 u32 icr = er32(ICR); |
|
1641 |
|
1642 /* |
|
1643 * read ICR disables interrupts using IAM |
|
1644 */ |
|
1645 |
|
1646 if (icr & E1000_ICR_LSC) { |
|
1647 hw->mac.get_link_status = 1; |
|
1648 /* |
|
1649 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1650 * disconnect (LSC) before accessing any PHY registers |
|
1651 */ |
|
1652 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1653 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1654 schedule_work(&adapter->downshift_task); |
|
1655 |
|
1656 /* |
|
1657 * 80003ES2LAN workaround-- For packet buffer work-around on |
|
1658 * link down event; disable receives here in the ISR and reset |
|
1659 * adapter in watchdog |
|
1660 */ |
|
1661 if (netif_carrier_ok(netdev) && |
|
1662 adapter->flags & FLAG_RX_NEEDS_RESTART) { |
|
1663 /* disable receives */ |
|
1664 u32 rctl = er32(RCTL); |
|
1665 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1666 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1667 } |
|
1668 /* guard against interrupt when we're going down */ |
|
1669 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1670 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1671 } |
|
1672 |
|
1673 if (napi_schedule_prep(&adapter->napi)) { |
|
1674 adapter->total_tx_bytes = 0; |
|
1675 adapter->total_tx_packets = 0; |
|
1676 adapter->total_rx_bytes = 0; |
|
1677 adapter->total_rx_packets = 0; |
|
1678 __napi_schedule(&adapter->napi); |
|
1679 } |
|
1680 |
|
1681 return IRQ_HANDLED; |
|
1682 } |
|
1683 |
|
1684 /** |
|
1685 * e1000_intr - Interrupt Handler |
|
1686 * @irq: interrupt number |
|
1687 * @data: pointer to a network interface device structure |
|
1688 **/ |
|
1689 static irqreturn_t e1000_intr(int irq, void *data) |
|
1690 { |
|
1691 struct net_device *netdev = data; |
|
1692 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1693 struct e1000_hw *hw = &adapter->hw; |
|
1694 u32 rctl, icr = er32(ICR); |
|
1695 |
|
1696 if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
|
1697 return IRQ_NONE; /* Not our interrupt */ |
|
1698 |
|
1699 /* |
|
1700 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
1701 * not set, then the adapter didn't send an interrupt |
|
1702 */ |
|
1703 if (!(icr & E1000_ICR_INT_ASSERTED)) |
|
1704 return IRQ_NONE; |
|
1705 |
|
1706 /* |
|
1707 * Interrupt Auto-Mask...upon reading ICR, |
|
1708 * interrupts are masked. No need for the |
|
1709 * IMC write |
|
1710 */ |
|
1711 |
|
1712 if (icr & E1000_ICR_LSC) { |
|
1713 hw->mac.get_link_status = 1; |
|
1714 /* |
|
1715 * ICH8 workaround-- Call gig speed drop workaround on cable |
|
1716 * disconnect (LSC) before accessing any PHY registers |
|
1717 */ |
|
1718 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1719 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1720 schedule_work(&adapter->downshift_task); |
|
1721 |
|
1722 /* |
|
1723 * 80003ES2LAN workaround-- |
|
1724 * For packet buffer work-around on link down event; |
|
1725 * disable receives here in the ISR and |
|
1726 * reset adapter in watchdog |
|
1727 */ |
|
1728 if (netif_carrier_ok(netdev) && |
|
1729 (adapter->flags & FLAG_RX_NEEDS_RESTART)) { |
|
1730 /* disable receives */ |
|
1731 rctl = er32(RCTL); |
|
1732 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1733 adapter->flags |= FLAG_RX_RESTART_NOW; |
|
1734 } |
|
1735 /* guard against interrupt when we're going down */ |
|
1736 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1737 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1738 } |
|
1739 |
|
1740 if (napi_schedule_prep(&adapter->napi)) { |
|
1741 adapter->total_tx_bytes = 0; |
|
1742 adapter->total_tx_packets = 0; |
|
1743 adapter->total_rx_bytes = 0; |
|
1744 adapter->total_rx_packets = 0; |
|
1745 __napi_schedule(&adapter->napi); |
|
1746 } |
|
1747 |
|
1748 return IRQ_HANDLED; |
|
1749 } |
|
1750 |
|
1751 static irqreturn_t e1000_msix_other(int irq, void *data) |
|
1752 { |
|
1753 struct net_device *netdev = data; |
|
1754 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1755 struct e1000_hw *hw = &adapter->hw; |
|
1756 u32 icr = er32(ICR); |
|
1757 |
|
1758 if (!(icr & E1000_ICR_INT_ASSERTED)) { |
|
1759 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1760 ew32(IMS, E1000_IMS_OTHER); |
|
1761 return IRQ_NONE; |
|
1762 } |
|
1763 |
|
1764 if (icr & adapter->eiac_mask) |
|
1765 ew32(ICS, (icr & adapter->eiac_mask)); |
|
1766 |
|
1767 if (icr & E1000_ICR_OTHER) { |
|
1768 if (!(icr & E1000_ICR_LSC)) |
|
1769 goto no_link_interrupt; |
|
1770 hw->mac.get_link_status = 1; |
|
1771 /* guard against interrupt when we're going down */ |
|
1772 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1773 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1774 } |
|
1775 |
|
1776 no_link_interrupt: |
|
1777 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1778 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); |
|
1779 |
|
1780 return IRQ_HANDLED; |
|
1781 } |
|
1782 |
|
1783 |
|
1784 static irqreturn_t e1000_intr_msix_tx(int irq, void *data) |
|
1785 { |
|
1786 struct net_device *netdev = data; |
|
1787 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1788 struct e1000_hw *hw = &adapter->hw; |
|
1789 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1790 |
|
1791 |
|
1792 adapter->total_tx_bytes = 0; |
|
1793 adapter->total_tx_packets = 0; |
|
1794 |
|
1795 if (!e1000_clean_tx_irq(adapter)) |
|
1796 /* Ring was not completely cleaned, so fire another interrupt */ |
|
1797 ew32(ICS, tx_ring->ims_val); |
|
1798 |
|
1799 return IRQ_HANDLED; |
|
1800 } |
|
1801 |
|
1802 static irqreturn_t e1000_intr_msix_rx(int irq, void *data) |
|
1803 { |
|
1804 struct net_device *netdev = data; |
|
1805 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1806 |
|
1807 /* Write the ITR value calculated at the end of the |
|
1808 * previous interrupt. |
|
1809 */ |
|
1810 if (adapter->rx_ring->set_itr) { |
|
1811 writel(1000000000 / (adapter->rx_ring->itr_val * 256), |
|
1812 adapter->hw.hw_addr + adapter->rx_ring->itr_register); |
|
1813 adapter->rx_ring->set_itr = 0; |
|
1814 } |
|
1815 |
|
1816 if (napi_schedule_prep(&adapter->napi)) { |
|
1817 adapter->total_rx_bytes = 0; |
|
1818 adapter->total_rx_packets = 0; |
|
1819 __napi_schedule(&adapter->napi); |
|
1820 } |
|
1821 return IRQ_HANDLED; |
|
1822 } |
|
1823 |
|
1824 /** |
|
1825 * e1000_configure_msix - Configure MSI-X hardware |
|
1826 * |
|
1827 * e1000_configure_msix sets up the hardware to properly |
|
1828 * generate MSI-X interrupts. |
|
1829 **/ |
|
1830 static void e1000_configure_msix(struct e1000_adapter *adapter) |
|
1831 { |
|
1832 struct e1000_hw *hw = &adapter->hw; |
|
1833 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1834 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1835 int vector = 0; |
|
1836 u32 ctrl_ext, ivar = 0; |
|
1837 |
|
1838 adapter->eiac_mask = 0; |
|
1839 |
|
1840 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ |
|
1841 if (hw->mac.type == e1000_82574) { |
|
1842 u32 rfctl = er32(RFCTL); |
|
1843 rfctl |= E1000_RFCTL_ACK_DIS; |
|
1844 ew32(RFCTL, rfctl); |
|
1845 } |
|
1846 |
|
1847 #define E1000_IVAR_INT_ALLOC_VALID 0x8 |
|
1848 /* Configure Rx vector */ |
|
1849 rx_ring->ims_val = E1000_IMS_RXQ0; |
|
1850 adapter->eiac_mask |= rx_ring->ims_val; |
|
1851 if (rx_ring->itr_val) |
|
1852 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1853 hw->hw_addr + rx_ring->itr_register); |
|
1854 else |
|
1855 writel(1, hw->hw_addr + rx_ring->itr_register); |
|
1856 ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
|
1857 |
|
1858 /* Configure Tx vector */ |
|
1859 tx_ring->ims_val = E1000_IMS_TXQ0; |
|
1860 vector++; |
|
1861 if (tx_ring->itr_val) |
|
1862 writel(1000000000 / (tx_ring->itr_val * 256), |
|
1863 hw->hw_addr + tx_ring->itr_register); |
|
1864 else |
|
1865 writel(1, hw->hw_addr + tx_ring->itr_register); |
|
1866 adapter->eiac_mask |= tx_ring->ims_val; |
|
1867 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); |
|
1868 |
|
1869 /* set vector for Other Causes, e.g. link changes */ |
|
1870 vector++; |
|
1871 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); |
|
1872 if (rx_ring->itr_val) |
|
1873 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1874 hw->hw_addr + E1000_EITR_82574(vector)); |
|
1875 else |
|
1876 writel(1, hw->hw_addr + E1000_EITR_82574(vector)); |
|
1877 |
|
1878 /* Cause Tx interrupts on every write back */ |
|
1879 ivar |= (1 << 31); |
|
1880 |
|
1881 ew32(IVAR, ivar); |
|
1882 |
|
1883 /* enable MSI-X PBA support */ |
|
1884 ctrl_ext = er32(CTRL_EXT); |
|
1885 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; |
|
1886 |
|
1887 /* Auto-Mask Other interrupts upon ICR read */ |
|
1888 #define E1000_EIAC_MASK_82574 0x01F00000 |
|
1889 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
|
1890 ctrl_ext |= E1000_CTRL_EXT_EIAME; |
|
1891 ew32(CTRL_EXT, ctrl_ext); |
|
1892 e1e_flush(); |
|
1893 } |
|
1894 |
|
1895 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) |
|
1896 { |
|
1897 if (adapter->msix_entries) { |
|
1898 pci_disable_msix(adapter->pdev); |
|
1899 kfree(adapter->msix_entries); |
|
1900 adapter->msix_entries = NULL; |
|
1901 } else if (adapter->flags & FLAG_MSI_ENABLED) { |
|
1902 pci_disable_msi(adapter->pdev); |
|
1903 adapter->flags &= ~FLAG_MSI_ENABLED; |
|
1904 } |
|
1905 } |
|
1906 |
|
1907 /** |
|
1908 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported |
|
1909 * |
|
1910 * Attempt to configure interrupts using the best available |
|
1911 * capabilities of the hardware and kernel. |
|
1912 **/ |
|
1913 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) |
|
1914 { |
|
1915 int err; |
|
1916 int i; |
|
1917 |
|
1918 switch (adapter->int_mode) { |
|
1919 case E1000E_INT_MODE_MSIX: |
|
1920 if (adapter->flags & FLAG_HAS_MSIX) { |
|
1921 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
|
1922 adapter->msix_entries = kcalloc(adapter->num_vectors, |
|
1923 sizeof(struct msix_entry), |
|
1924 GFP_KERNEL); |
|
1925 if (adapter->msix_entries) { |
|
1926 for (i = 0; i < adapter->num_vectors; i++) |
|
1927 adapter->msix_entries[i].entry = i; |
|
1928 |
|
1929 err = pci_enable_msix(adapter->pdev, |
|
1930 adapter->msix_entries, |
|
1931 adapter->num_vectors); |
|
1932 if (err == 0) |
|
1933 return; |
|
1934 } |
|
1935 /* MSI-X failed, so fall through and try MSI */ |
|
1936 e_err("Failed to initialize MSI-X interrupts. " |
|
1937 "Falling back to MSI interrupts.\n"); |
|
1938 e1000e_reset_interrupt_capability(adapter); |
|
1939 } |
|
1940 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
1941 /* Fall through */ |
|
1942 case E1000E_INT_MODE_MSI: |
|
1943 if (!pci_enable_msi(adapter->pdev)) { |
|
1944 adapter->flags |= FLAG_MSI_ENABLED; |
|
1945 } else { |
|
1946 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
1947 e_err("Failed to initialize MSI interrupts. Falling " |
|
1948 "back to legacy interrupts.\n"); |
|
1949 } |
|
1950 /* Fall through */ |
|
1951 case E1000E_INT_MODE_LEGACY: |
|
1952 /* Don't do anything; this is the system default */ |
|
1953 break; |
|
1954 } |
|
1955 |
|
1956 /* store the number of vectors being used */ |
|
1957 adapter->num_vectors = 1; |
|
1958 } |
|
1959 |
|
1960 /** |
|
1961 * e1000_request_msix - Initialize MSI-X interrupts |
|
1962 * |
|
1963 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the |
|
1964 * kernel. |
|
1965 **/ |
|
1966 static int e1000_request_msix(struct e1000_adapter *adapter) |
|
1967 { |
|
1968 struct net_device *netdev = adapter->netdev; |
|
1969 int err = 0, vector = 0; |
|
1970 |
|
1971 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
1972 snprintf(adapter->rx_ring->name, |
|
1973 sizeof(adapter->rx_ring->name) - 1, |
|
1974 "%s-rx-0", netdev->name); |
|
1975 else |
|
1976 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); |
|
1977 err = request_irq(adapter->msix_entries[vector].vector, |
|
1978 e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
|
1979 netdev); |
|
1980 if (err) |
|
1981 goto out; |
|
1982 adapter->rx_ring->itr_register = E1000_EITR_82574(vector); |
|
1983 adapter->rx_ring->itr_val = adapter->itr; |
|
1984 vector++; |
|
1985 |
|
1986 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
1987 snprintf(adapter->tx_ring->name, |
|
1988 sizeof(adapter->tx_ring->name) - 1, |
|
1989 "%s-tx-0", netdev->name); |
|
1990 else |
|
1991 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); |
|
1992 err = request_irq(adapter->msix_entries[vector].vector, |
|
1993 e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
|
1994 netdev); |
|
1995 if (err) |
|
1996 goto out; |
|
1997 adapter->tx_ring->itr_register = E1000_EITR_82574(vector); |
|
1998 adapter->tx_ring->itr_val = adapter->itr; |
|
1999 vector++; |
|
2000 |
|
2001 err = request_irq(adapter->msix_entries[vector].vector, |
|
2002 e1000_msix_other, 0, netdev->name, netdev); |
|
2003 if (err) |
|
2004 goto out; |
|
2005 |
|
2006 e1000_configure_msix(adapter); |
|
2007 return 0; |
|
2008 out: |
|
2009 return err; |
|
2010 } |
|
2011 |
|
2012 /** |
|
2013 * e1000_request_irq - initialize interrupts |
|
2014 * |
|
2015 * Attempts to configure interrupts using the best available |
|
2016 * capabilities of the hardware and kernel. |
|
2017 **/ |
|
2018 static int e1000_request_irq(struct e1000_adapter *adapter) |
|
2019 { |
|
2020 struct net_device *netdev = adapter->netdev; |
|
2021 int err; |
|
2022 |
|
2023 if (adapter->msix_entries) { |
|
2024 err = e1000_request_msix(adapter); |
|
2025 if (!err) |
|
2026 return err; |
|
2027 /* fall back to MSI */ |
|
2028 e1000e_reset_interrupt_capability(adapter); |
|
2029 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2030 e1000e_set_interrupt_capability(adapter); |
|
2031 } |
|
2032 if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2033 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
|
2034 netdev->name, netdev); |
|
2035 if (!err) |
|
2036 return err; |
|
2037 |
|
2038 /* fall back to legacy interrupt */ |
|
2039 e1000e_reset_interrupt_capability(adapter); |
|
2040 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2041 } |
|
2042 |
|
2043 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
|
2044 netdev->name, netdev); |
|
2045 if (err) |
|
2046 e_err("Unable to allocate interrupt, Error: %d\n", err); |
|
2047 |
|
2048 return err; |
|
2049 } |
|
2050 |
|
2051 static void e1000_free_irq(struct e1000_adapter *adapter) |
|
2052 { |
|
2053 struct net_device *netdev = adapter->netdev; |
|
2054 |
|
2055 if (adapter->msix_entries) { |
|
2056 int vector = 0; |
|
2057 |
|
2058 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2059 vector++; |
|
2060 |
|
2061 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2062 vector++; |
|
2063 |
|
2064 /* Other Causes interrupt vector */ |
|
2065 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2066 return; |
|
2067 } |
|
2068 |
|
2069 free_irq(adapter->pdev->irq, netdev); |
|
2070 } |
|
2071 |
|
2072 /** |
|
2073 * e1000_irq_disable - Mask off interrupt generation on the NIC |
|
2074 **/ |
|
2075 static void e1000_irq_disable(struct e1000_adapter *adapter) |
|
2076 { |
|
2077 struct e1000_hw *hw = &adapter->hw; |
|
2078 |
|
2079 ew32(IMC, ~0); |
|
2080 if (adapter->msix_entries) |
|
2081 ew32(EIAC_82574, 0); |
|
2082 e1e_flush(); |
|
2083 |
|
2084 if (adapter->msix_entries) { |
|
2085 int i; |
|
2086 for (i = 0; i < adapter->num_vectors; i++) |
|
2087 synchronize_irq(adapter->msix_entries[i].vector); |
|
2088 } else { |
|
2089 synchronize_irq(adapter->pdev->irq); |
|
2090 } |
|
2091 } |
|
2092 |
|
2093 /** |
|
2094 * e1000_irq_enable - Enable default interrupt generation settings |
|
2095 **/ |
|
2096 static void e1000_irq_enable(struct e1000_adapter *adapter) |
|
2097 { |
|
2098 struct e1000_hw *hw = &adapter->hw; |
|
2099 |
|
2100 if (adapter->msix_entries) { |
|
2101 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); |
|
2102 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); |
|
2103 } else { |
|
2104 ew32(IMS, IMS_ENABLE_MASK); |
|
2105 } |
|
2106 e1e_flush(); |
|
2107 } |
|
2108 |
|
2109 /** |
|
2110 * e1000e_get_hw_control - get control of the h/w from f/w |
|
2111 * @adapter: address of board private structure |
|
2112 * |
|
2113 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2114 * For ASF and Pass Through versions of f/w this means that |
|
2115 * the driver is loaded. For AMT version (only with 82573) |
|
2116 * of the f/w this means that the network i/f is open. |
|
2117 **/ |
|
2118 void e1000e_get_hw_control(struct e1000_adapter *adapter) |
|
2119 { |
|
2120 struct e1000_hw *hw = &adapter->hw; |
|
2121 u32 ctrl_ext; |
|
2122 u32 swsm; |
|
2123 |
|
2124 /* Let firmware know the driver has taken over */ |
|
2125 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2126 swsm = er32(SWSM); |
|
2127 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
|
2128 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2129 ctrl_ext = er32(CTRL_EXT); |
|
2130 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
2131 } |
|
2132 } |
|
2133 |
|
2134 /** |
|
2135 * e1000e_release_hw_control - release control of the h/w to f/w |
|
2136 * @adapter: address of board private structure |
|
2137 * |
|
2138 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2139 * For ASF and Pass Through versions of f/w this means that the |
|
2140 * driver is no longer loaded. For AMT version (only with 82573) i |
|
2141 * of the f/w this means that the network i/f is closed. |
|
2142 * |
|
2143 **/ |
|
2144 void e1000e_release_hw_control(struct e1000_adapter *adapter) |
|
2145 { |
|
2146 struct e1000_hw *hw = &adapter->hw; |
|
2147 u32 ctrl_ext; |
|
2148 u32 swsm; |
|
2149 |
|
2150 /* Let firmware taken over control of h/w */ |
|
2151 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2152 swsm = er32(SWSM); |
|
2153 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
|
2154 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2155 ctrl_ext = er32(CTRL_EXT); |
|
2156 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
|
2157 } |
|
2158 } |
|
2159 |
|
2160 /** |
|
2161 * @e1000_alloc_ring - allocate memory for a ring structure |
|
2162 **/ |
|
2163 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, |
|
2164 struct e1000_ring *ring) |
|
2165 { |
|
2166 struct pci_dev *pdev = adapter->pdev; |
|
2167 |
|
2168 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, |
|
2169 GFP_KERNEL); |
|
2170 if (!ring->desc) |
|
2171 return -ENOMEM; |
|
2172 |
|
2173 return 0; |
|
2174 } |
|
2175 |
|
2176 /** |
|
2177 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) |
|
2178 * @adapter: board private structure |
|
2179 * |
|
2180 * Return 0 on success, negative on failure |
|
2181 **/ |
|
2182 int e1000e_setup_tx_resources(struct e1000_adapter *adapter) |
|
2183 { |
|
2184 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2185 int err = -ENOMEM, size; |
|
2186 |
|
2187 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2188 tx_ring->buffer_info = vzalloc(size); |
|
2189 if (!tx_ring->buffer_info) |
|
2190 goto err; |
|
2191 |
|
2192 /* round up to nearest 4K */ |
|
2193 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2194 tx_ring->size = ALIGN(tx_ring->size, 4096); |
|
2195 |
|
2196 err = e1000_alloc_ring_dma(adapter, tx_ring); |
|
2197 if (err) |
|
2198 goto err; |
|
2199 |
|
2200 tx_ring->next_to_use = 0; |
|
2201 tx_ring->next_to_clean = 0; |
|
2202 |
|
2203 return 0; |
|
2204 err: |
|
2205 vfree(tx_ring->buffer_info); |
|
2206 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2207 return err; |
|
2208 } |
|
2209 |
|
2210 /** |
|
2211 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) |
|
2212 * @adapter: board private structure |
|
2213 * |
|
2214 * Returns 0 on success, negative on failure |
|
2215 **/ |
|
2216 int e1000e_setup_rx_resources(struct e1000_adapter *adapter) |
|
2217 { |
|
2218 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
2219 struct e1000_buffer *buffer_info; |
|
2220 int i, size, desc_len, err = -ENOMEM; |
|
2221 |
|
2222 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2223 rx_ring->buffer_info = vzalloc(size); |
|
2224 if (!rx_ring->buffer_info) |
|
2225 goto err; |
|
2226 |
|
2227 for (i = 0; i < rx_ring->count; i++) { |
|
2228 buffer_info = &rx_ring->buffer_info[i]; |
|
2229 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, |
|
2230 sizeof(struct e1000_ps_page), |
|
2231 GFP_KERNEL); |
|
2232 if (!buffer_info->ps_pages) |
|
2233 goto err_pages; |
|
2234 } |
|
2235 |
|
2236 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
2237 |
|
2238 /* Round up to nearest 4K */ |
|
2239 rx_ring->size = rx_ring->count * desc_len; |
|
2240 rx_ring->size = ALIGN(rx_ring->size, 4096); |
|
2241 |
|
2242 err = e1000_alloc_ring_dma(adapter, rx_ring); |
|
2243 if (err) |
|
2244 goto err_pages; |
|
2245 |
|
2246 rx_ring->next_to_clean = 0; |
|
2247 rx_ring->next_to_use = 0; |
|
2248 rx_ring->rx_skb_top = NULL; |
|
2249 |
|
2250 return 0; |
|
2251 |
|
2252 err_pages: |
|
2253 for (i = 0; i < rx_ring->count; i++) { |
|
2254 buffer_info = &rx_ring->buffer_info[i]; |
|
2255 kfree(buffer_info->ps_pages); |
|
2256 } |
|
2257 err: |
|
2258 vfree(rx_ring->buffer_info); |
|
2259 e_err("Unable to allocate memory for the receive descriptor ring\n"); |
|
2260 return err; |
|
2261 } |
|
2262 |
|
2263 /** |
|
2264 * e1000_clean_tx_ring - Free Tx Buffers |
|
2265 * @adapter: board private structure |
|
2266 **/ |
|
2267 static void e1000_clean_tx_ring(struct e1000_adapter *adapter) |
|
2268 { |
|
2269 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2270 struct e1000_buffer *buffer_info; |
|
2271 unsigned long size; |
|
2272 unsigned int i; |
|
2273 |
|
2274 for (i = 0; i < tx_ring->count; i++) { |
|
2275 buffer_info = &tx_ring->buffer_info[i]; |
|
2276 e1000_put_txbuf(adapter, buffer_info); |
|
2277 } |
|
2278 |
|
2279 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2280 memset(tx_ring->buffer_info, 0, size); |
|
2281 |
|
2282 memset(tx_ring->desc, 0, tx_ring->size); |
|
2283 |
|
2284 tx_ring->next_to_use = 0; |
|
2285 tx_ring->next_to_clean = 0; |
|
2286 |
|
2287 writel(0, adapter->hw.hw_addr + tx_ring->head); |
|
2288 writel(0, adapter->hw.hw_addr + tx_ring->tail); |
|
2289 } |
|
2290 |
|
2291 /** |
|
2292 * e1000e_free_tx_resources - Free Tx Resources per Queue |
|
2293 * @adapter: board private structure |
|
2294 * |
|
2295 * Free all transmit software resources |
|
2296 **/ |
|
2297 void e1000e_free_tx_resources(struct e1000_adapter *adapter) |
|
2298 { |
|
2299 struct pci_dev *pdev = adapter->pdev; |
|
2300 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2301 |
|
2302 e1000_clean_tx_ring(adapter); |
|
2303 |
|
2304 vfree(tx_ring->buffer_info); |
|
2305 tx_ring->buffer_info = NULL; |
|
2306 |
|
2307 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
2308 tx_ring->dma); |
|
2309 tx_ring->desc = NULL; |
|
2310 } |
|
2311 |
|
2312 /** |
|
2313 * e1000e_free_rx_resources - Free Rx Resources |
|
2314 * @adapter: board private structure |
|
2315 * |
|
2316 * Free all receive software resources |
|
2317 **/ |
|
2318 |
|
2319 void e1000e_free_rx_resources(struct e1000_adapter *adapter) |
|
2320 { |
|
2321 struct pci_dev *pdev = adapter->pdev; |
|
2322 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
2323 int i; |
|
2324 |
|
2325 e1000_clean_rx_ring(adapter); |
|
2326 |
|
2327 for (i = 0; i < rx_ring->count; i++) |
|
2328 kfree(rx_ring->buffer_info[i].ps_pages); |
|
2329 |
|
2330 vfree(rx_ring->buffer_info); |
|
2331 rx_ring->buffer_info = NULL; |
|
2332 |
|
2333 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2334 rx_ring->dma); |
|
2335 rx_ring->desc = NULL; |
|
2336 } |
|
2337 |
|
2338 /** |
|
2339 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2340 * @adapter: pointer to adapter |
|
2341 * @itr_setting: current adapter->itr |
|
2342 * @packets: the number of packets during this measurement interval |
|
2343 * @bytes: the number of bytes during this measurement interval |
|
2344 * |
|
2345 * Stores a new ITR value based on packets and byte |
|
2346 * counts during the last interrupt. The advantage of per interrupt |
|
2347 * computation is faster updates and more accurate ITR for the current |
|
2348 * traffic pattern. Constants in this function were computed |
|
2349 * based on theoretical maximum wire speed and thresholds were set based |
|
2350 * on testing data as well as attempting to minimize response time |
|
2351 * while increasing bulk throughput. This functionality is controlled |
|
2352 * by the InterruptThrottleRate module parameter. |
|
2353 **/ |
|
2354 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2355 u16 itr_setting, int packets, |
|
2356 int bytes) |
|
2357 { |
|
2358 unsigned int retval = itr_setting; |
|
2359 |
|
2360 if (packets == 0) |
|
2361 goto update_itr_done; |
|
2362 |
|
2363 switch (itr_setting) { |
|
2364 case lowest_latency: |
|
2365 /* handle TSO and jumbo frames */ |
|
2366 if (bytes/packets > 8000) |
|
2367 retval = bulk_latency; |
|
2368 else if ((packets < 5) && (bytes > 512)) |
|
2369 retval = low_latency; |
|
2370 break; |
|
2371 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2372 if (bytes > 10000) { |
|
2373 /* this if handles the TSO accounting */ |
|
2374 if (bytes/packets > 8000) |
|
2375 retval = bulk_latency; |
|
2376 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2377 retval = bulk_latency; |
|
2378 else if ((packets > 35)) |
|
2379 retval = lowest_latency; |
|
2380 } else if (bytes/packets > 2000) { |
|
2381 retval = bulk_latency; |
|
2382 } else if (packets <= 2 && bytes < 512) { |
|
2383 retval = lowest_latency; |
|
2384 } |
|
2385 break; |
|
2386 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2387 if (bytes > 25000) { |
|
2388 if (packets > 35) |
|
2389 retval = low_latency; |
|
2390 } else if (bytes < 6000) { |
|
2391 retval = low_latency; |
|
2392 } |
|
2393 break; |
|
2394 } |
|
2395 |
|
2396 update_itr_done: |
|
2397 return retval; |
|
2398 } |
|
2399 |
|
2400 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2401 { |
|
2402 struct e1000_hw *hw = &adapter->hw; |
|
2403 u16 current_itr; |
|
2404 u32 new_itr = adapter->itr; |
|
2405 |
|
2406 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2407 if (adapter->link_speed != SPEED_1000) { |
|
2408 current_itr = 0; |
|
2409 new_itr = 4000; |
|
2410 goto set_itr_now; |
|
2411 } |
|
2412 |
|
2413 if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
2414 new_itr = 0; |
|
2415 goto set_itr_now; |
|
2416 } |
|
2417 |
|
2418 adapter->tx_itr = e1000_update_itr(adapter, |
|
2419 adapter->tx_itr, |
|
2420 adapter->total_tx_packets, |
|
2421 adapter->total_tx_bytes); |
|
2422 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2423 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2424 adapter->tx_itr = low_latency; |
|
2425 |
|
2426 adapter->rx_itr = e1000_update_itr(adapter, |
|
2427 adapter->rx_itr, |
|
2428 adapter->total_rx_packets, |
|
2429 adapter->total_rx_bytes); |
|
2430 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2431 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2432 adapter->rx_itr = low_latency; |
|
2433 |
|
2434 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2435 |
|
2436 switch (current_itr) { |
|
2437 /* counts and packets in update_itr are dependent on these numbers */ |
|
2438 case lowest_latency: |
|
2439 new_itr = 70000; |
|
2440 break; |
|
2441 case low_latency: |
|
2442 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2443 break; |
|
2444 case bulk_latency: |
|
2445 new_itr = 4000; |
|
2446 break; |
|
2447 default: |
|
2448 break; |
|
2449 } |
|
2450 |
|
2451 set_itr_now: |
|
2452 if (new_itr != adapter->itr) { |
|
2453 /* |
|
2454 * this attempts to bias the interrupt rate towards Bulk |
|
2455 * by adding intermediate steps when interrupt rate is |
|
2456 * increasing |
|
2457 */ |
|
2458 new_itr = new_itr > adapter->itr ? |
|
2459 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2460 new_itr; |
|
2461 adapter->itr = new_itr; |
|
2462 adapter->rx_ring->itr_val = new_itr; |
|
2463 if (adapter->msix_entries) |
|
2464 adapter->rx_ring->set_itr = 1; |
|
2465 else |
|
2466 if (new_itr) |
|
2467 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2468 else |
|
2469 ew32(ITR, 0); |
|
2470 } |
|
2471 } |
|
2472 |
|
2473 /** |
|
2474 * e1000_alloc_queues - Allocate memory for all rings |
|
2475 * @adapter: board private structure to initialize |
|
2476 **/ |
|
2477 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
2478 { |
|
2479 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); |
|
2480 if (!adapter->tx_ring) |
|
2481 goto err; |
|
2482 |
|
2483 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); |
|
2484 if (!adapter->rx_ring) |
|
2485 goto err; |
|
2486 |
|
2487 return 0; |
|
2488 err: |
|
2489 e_err("Unable to allocate memory for queues\n"); |
|
2490 kfree(adapter->rx_ring); |
|
2491 kfree(adapter->tx_ring); |
|
2492 return -ENOMEM; |
|
2493 } |
|
2494 |
|
2495 /** |
|
2496 * e1000_clean - NAPI Rx polling callback |
|
2497 * @napi: struct associated with this polling callback |
|
2498 * @budget: amount of packets driver is allowed to process this poll |
|
2499 **/ |
|
2500 static int e1000_clean(struct napi_struct *napi, int budget) |
|
2501 { |
|
2502 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
2503 struct e1000_hw *hw = &adapter->hw; |
|
2504 struct net_device *poll_dev = adapter->netdev; |
|
2505 int tx_cleaned = 1, work_done = 0; |
|
2506 |
|
2507 adapter = netdev_priv(poll_dev); |
|
2508 |
|
2509 if (adapter->msix_entries && |
|
2510 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) |
|
2511 goto clean_rx; |
|
2512 |
|
2513 tx_cleaned = e1000_clean_tx_irq(adapter); |
|
2514 |
|
2515 clean_rx: |
|
2516 adapter->clean_rx(adapter, &work_done, budget); |
|
2517 |
|
2518 if (!tx_cleaned) |
|
2519 work_done = budget; |
|
2520 |
|
2521 /* If budget not fully consumed, exit the polling mode */ |
|
2522 if (work_done < budget) { |
|
2523 if (adapter->itr_setting & 3) |
|
2524 e1000_set_itr(adapter); |
|
2525 napi_complete(napi); |
|
2526 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
2527 if (adapter->msix_entries) |
|
2528 ew32(IMS, adapter->rx_ring->ims_val); |
|
2529 else |
|
2530 e1000_irq_enable(adapter); |
|
2531 } |
|
2532 } |
|
2533 |
|
2534 return work_done; |
|
2535 } |
|
2536 |
|
2537 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
2538 { |
|
2539 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2540 struct e1000_hw *hw = &adapter->hw; |
|
2541 u32 vfta, index; |
|
2542 |
|
2543 /* don't update vlan cookie if already programmed */ |
|
2544 if ((adapter->hw.mng_cookie.status & |
|
2545 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2546 (vid == adapter->mng_vlan_id)) |
|
2547 return; |
|
2548 |
|
2549 /* add VID to filter table */ |
|
2550 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2551 index = (vid >> 5) & 0x7F; |
|
2552 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2553 vfta |= (1 << (vid & 0x1F)); |
|
2554 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2555 } |
|
2556 |
|
2557 set_bit(vid, adapter->active_vlans); |
|
2558 } |
|
2559 |
|
2560 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
2561 { |
|
2562 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2563 struct e1000_hw *hw = &adapter->hw; |
|
2564 u32 vfta, index; |
|
2565 |
|
2566 if ((adapter->hw.mng_cookie.status & |
|
2567 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2568 (vid == adapter->mng_vlan_id)) { |
|
2569 /* release control to f/w */ |
|
2570 e1000e_release_hw_control(adapter); |
|
2571 return; |
|
2572 } |
|
2573 |
|
2574 /* remove VID from filter table */ |
|
2575 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2576 index = (vid >> 5) & 0x7F; |
|
2577 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2578 vfta &= ~(1 << (vid & 0x1F)); |
|
2579 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2580 } |
|
2581 |
|
2582 clear_bit(vid, adapter->active_vlans); |
|
2583 } |
|
2584 |
|
2585 /** |
|
2586 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering |
|
2587 * @adapter: board private structure to initialize |
|
2588 **/ |
|
2589 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) |
|
2590 { |
|
2591 struct net_device *netdev = adapter->netdev; |
|
2592 struct e1000_hw *hw = &adapter->hw; |
|
2593 u32 rctl; |
|
2594 |
|
2595 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2596 /* disable VLAN receive filtering */ |
|
2597 rctl = er32(RCTL); |
|
2598 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); |
|
2599 ew32(RCTL, rctl); |
|
2600 |
|
2601 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
2602 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
2603 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2604 } |
|
2605 } |
|
2606 } |
|
2607 |
|
2608 /** |
|
2609 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering |
|
2610 * @adapter: board private structure to initialize |
|
2611 **/ |
|
2612 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) |
|
2613 { |
|
2614 struct e1000_hw *hw = &adapter->hw; |
|
2615 u32 rctl; |
|
2616 |
|
2617 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2618 /* enable VLAN receive filtering */ |
|
2619 rctl = er32(RCTL); |
|
2620 rctl |= E1000_RCTL_VFE; |
|
2621 rctl &= ~E1000_RCTL_CFIEN; |
|
2622 ew32(RCTL, rctl); |
|
2623 } |
|
2624 } |
|
2625 |
|
2626 /** |
|
2627 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping |
|
2628 * @adapter: board private structure to initialize |
|
2629 **/ |
|
2630 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) |
|
2631 { |
|
2632 struct e1000_hw *hw = &adapter->hw; |
|
2633 u32 ctrl; |
|
2634 |
|
2635 /* disable VLAN tag insert/strip */ |
|
2636 ctrl = er32(CTRL); |
|
2637 ctrl &= ~E1000_CTRL_VME; |
|
2638 ew32(CTRL, ctrl); |
|
2639 } |
|
2640 |
|
2641 /** |
|
2642 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping |
|
2643 * @adapter: board private structure to initialize |
|
2644 **/ |
|
2645 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) |
|
2646 { |
|
2647 struct e1000_hw *hw = &adapter->hw; |
|
2648 u32 ctrl; |
|
2649 |
|
2650 /* enable VLAN tag insert/strip */ |
|
2651 ctrl = er32(CTRL); |
|
2652 ctrl |= E1000_CTRL_VME; |
|
2653 ew32(CTRL, ctrl); |
|
2654 } |
|
2655 |
|
2656 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
|
2657 { |
|
2658 struct net_device *netdev = adapter->netdev; |
|
2659 u16 vid = adapter->hw.mng_cookie.vlan_id; |
|
2660 u16 old_vid = adapter->mng_vlan_id; |
|
2661 |
|
2662 if (adapter->hw.mng_cookie.status & |
|
2663 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
|
2664 e1000_vlan_rx_add_vid(netdev, vid); |
|
2665 adapter->mng_vlan_id = vid; |
|
2666 } |
|
2667 |
|
2668 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
|
2669 e1000_vlan_rx_kill_vid(netdev, old_vid); |
|
2670 } |
|
2671 |
|
2672 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
2673 { |
|
2674 u16 vid; |
|
2675 |
|
2676 e1000_vlan_rx_add_vid(adapter->netdev, 0); |
|
2677 |
|
2678 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
|
2679 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
2680 } |
|
2681 |
|
2682 static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
|
2683 { |
|
2684 struct e1000_hw *hw = &adapter->hw; |
|
2685 u32 manc, manc2h, mdef, i, j; |
|
2686 |
|
2687 if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) |
|
2688 return; |
|
2689 |
|
2690 manc = er32(MANC); |
|
2691 |
|
2692 /* |
|
2693 * enable receiving management packets to the host. this will probably |
|
2694 * generate destination unreachable messages from the host OS, but |
|
2695 * the packets will be handled on SMBUS |
|
2696 */ |
|
2697 manc |= E1000_MANC_EN_MNG2HOST; |
|
2698 manc2h = er32(MANC2H); |
|
2699 |
|
2700 switch (hw->mac.type) { |
|
2701 default: |
|
2702 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); |
|
2703 break; |
|
2704 case e1000_82574: |
|
2705 case e1000_82583: |
|
2706 /* |
|
2707 * Check if IPMI pass-through decision filter already exists; |
|
2708 * if so, enable it. |
|
2709 */ |
|
2710 for (i = 0, j = 0; i < 8; i++) { |
|
2711 mdef = er32(MDEF(i)); |
|
2712 |
|
2713 /* Ignore filters with anything other than IPMI ports */ |
|
2714 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2715 continue; |
|
2716 |
|
2717 /* Enable this decision filter in MANC2H */ |
|
2718 if (mdef) |
|
2719 manc2h |= (1 << i); |
|
2720 |
|
2721 j |= mdef; |
|
2722 } |
|
2723 |
|
2724 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2725 break; |
|
2726 |
|
2727 /* Create new decision filter in an empty filter */ |
|
2728 for (i = 0, j = 0; i < 8; i++) |
|
2729 if (er32(MDEF(i)) == 0) { |
|
2730 ew32(MDEF(i), (E1000_MDEF_PORT_623 | |
|
2731 E1000_MDEF_PORT_664)); |
|
2732 manc2h |= (1 << 1); |
|
2733 j++; |
|
2734 break; |
|
2735 } |
|
2736 |
|
2737 if (!j) |
|
2738 e_warn("Unable to create IPMI pass-through filter\n"); |
|
2739 break; |
|
2740 } |
|
2741 |
|
2742 ew32(MANC2H, manc2h); |
|
2743 ew32(MANC, manc); |
|
2744 } |
|
2745 |
|
2746 /** |
|
2747 * e1000_configure_tx - Configure Transmit Unit after Reset |
|
2748 * @adapter: board private structure |
|
2749 * |
|
2750 * Configure the Tx unit of the MAC after a reset. |
|
2751 **/ |
|
2752 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
2753 { |
|
2754 struct e1000_hw *hw = &adapter->hw; |
|
2755 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2756 u64 tdba; |
|
2757 u32 tdlen, tctl, tipg, tarc; |
|
2758 u32 ipgr1, ipgr2; |
|
2759 |
|
2760 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
2761 tdba = tx_ring->dma; |
|
2762 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2763 ew32(TDBAL, (tdba & DMA_BIT_MASK(32))); |
|
2764 ew32(TDBAH, (tdba >> 32)); |
|
2765 ew32(TDLEN, tdlen); |
|
2766 ew32(TDH, 0); |
|
2767 ew32(TDT, 0); |
|
2768 tx_ring->head = E1000_TDH; |
|
2769 tx_ring->tail = E1000_TDT; |
|
2770 |
|
2771 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
2772 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ |
|
2773 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ |
|
2774 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ |
|
2775 |
|
2776 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) |
|
2777 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ |
|
2778 |
|
2779 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
2780 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
2781 ew32(TIPG, tipg); |
|
2782 |
|
2783 /* Set the Tx Interrupt Delay register */ |
|
2784 ew32(TIDV, adapter->tx_int_delay); |
|
2785 /* Tx irq moderation */ |
|
2786 ew32(TADV, adapter->tx_abs_int_delay); |
|
2787 |
|
2788 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
2789 u32 txdctl = er32(TXDCTL(0)); |
|
2790 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
|
2791 E1000_TXDCTL_WTHRESH); |
|
2792 /* |
|
2793 * set up some performance related parameters to encourage the |
|
2794 * hardware to use the bus more efficiently in bursts, depends |
|
2795 * on the tx_int_delay to be enabled, |
|
2796 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time |
|
2797 * hthresh = 1 ==> prefetch when one or more available |
|
2798 * pthresh = 0x1f ==> prefetch if internal cache 31 or less |
|
2799 * BEWARE: this seems to work but should be considered first if |
|
2800 * there are Tx hangs or other Tx related bugs |
|
2801 */ |
|
2802 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; |
|
2803 ew32(TXDCTL(0), txdctl); |
|
2804 /* erratum work around: set txdctl the same for both queues */ |
|
2805 ew32(TXDCTL(1), txdctl); |
|
2806 } |
|
2807 |
|
2808 /* Program the Transmit Control Register */ |
|
2809 tctl = er32(TCTL); |
|
2810 tctl &= ~E1000_TCTL_CT; |
|
2811 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
2812 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
2813 |
|
2814 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
|
2815 tarc = er32(TARC(0)); |
|
2816 /* |
|
2817 * set the speed mode bit, we'll clear it if we're not at |
|
2818 * gigabit link later |
|
2819 */ |
|
2820 #define SPEED_MODE_BIT (1 << 21) |
|
2821 tarc |= SPEED_MODE_BIT; |
|
2822 ew32(TARC(0), tarc); |
|
2823 } |
|
2824 |
|
2825 /* errata: program both queues to unweighted RR */ |
|
2826 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { |
|
2827 tarc = er32(TARC(0)); |
|
2828 tarc |= 1; |
|
2829 ew32(TARC(0), tarc); |
|
2830 tarc = er32(TARC(1)); |
|
2831 tarc |= 1; |
|
2832 ew32(TARC(1), tarc); |
|
2833 } |
|
2834 |
|
2835 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
2836 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
2837 |
|
2838 /* only set IDE if we are delaying interrupts using the timers */ |
|
2839 if (adapter->tx_int_delay) |
|
2840 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
2841 |
|
2842 /* enable Report Status bit */ |
|
2843 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
2844 |
|
2845 ew32(TCTL, tctl); |
|
2846 |
|
2847 e1000e_config_collision_dist(hw); |
|
2848 } |
|
2849 |
|
2850 /** |
|
2851 * e1000_setup_rctl - configure the receive control registers |
|
2852 * @adapter: Board private structure |
|
2853 **/ |
|
2854 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
2855 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
2856 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
2857 { |
|
2858 struct e1000_hw *hw = &adapter->hw; |
|
2859 u32 rctl, rfctl; |
|
2860 u32 pages = 0; |
|
2861 |
|
2862 /* Workaround Si errata on 82579 - configure jumbo frame flow */ |
|
2863 if (hw->mac.type == e1000_pch2lan) { |
|
2864 s32 ret_val; |
|
2865 |
|
2866 if (adapter->netdev->mtu > ETH_DATA_LEN) |
|
2867 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); |
|
2868 else |
|
2869 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); |
|
2870 |
|
2871 if (ret_val) |
|
2872 e_dbg("failed to enable jumbo frame workaround mode\n"); |
|
2873 } |
|
2874 |
|
2875 /* Program MC offset vector base */ |
|
2876 rctl = er32(RCTL); |
|
2877 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
2878 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
2879 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
2880 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
2881 |
|
2882 /* Do not Store bad packets */ |
|
2883 rctl &= ~E1000_RCTL_SBP; |
|
2884 |
|
2885 /* Enable Long Packet receive */ |
|
2886 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
2887 rctl &= ~E1000_RCTL_LPE; |
|
2888 else |
|
2889 rctl |= E1000_RCTL_LPE; |
|
2890 |
|
2891 /* Some systems expect that the CRC is included in SMBUS traffic. The |
|
2892 * hardware strips the CRC before sending to both SMBUS (BMC) and to |
|
2893 * host memory when this is enabled |
|
2894 */ |
|
2895 if (adapter->flags2 & FLAG2_CRC_STRIPPING) |
|
2896 rctl |= E1000_RCTL_SECRC; |
|
2897 |
|
2898 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
|
2899 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { |
|
2900 u16 phy_data; |
|
2901 |
|
2902 e1e_rphy(hw, PHY_REG(770, 26), &phy_data); |
|
2903 phy_data &= 0xfff8; |
|
2904 phy_data |= (1 << 2); |
|
2905 e1e_wphy(hw, PHY_REG(770, 26), phy_data); |
|
2906 |
|
2907 e1e_rphy(hw, 22, &phy_data); |
|
2908 phy_data &= 0x0fff; |
|
2909 phy_data |= (1 << 14); |
|
2910 e1e_wphy(hw, 0x10, 0x2823); |
|
2911 e1e_wphy(hw, 0x11, 0x0003); |
|
2912 e1e_wphy(hw, 22, phy_data); |
|
2913 } |
|
2914 |
|
2915 /* Setup buffer sizes */ |
|
2916 rctl &= ~E1000_RCTL_SZ_4096; |
|
2917 rctl |= E1000_RCTL_BSEX; |
|
2918 switch (adapter->rx_buffer_len) { |
|
2919 case 2048: |
|
2920 default: |
|
2921 rctl |= E1000_RCTL_SZ_2048; |
|
2922 rctl &= ~E1000_RCTL_BSEX; |
|
2923 break; |
|
2924 case 4096: |
|
2925 rctl |= E1000_RCTL_SZ_4096; |
|
2926 break; |
|
2927 case 8192: |
|
2928 rctl |= E1000_RCTL_SZ_8192; |
|
2929 break; |
|
2930 case 16384: |
|
2931 rctl |= E1000_RCTL_SZ_16384; |
|
2932 break; |
|
2933 } |
|
2934 |
|
2935 /* Enable Extended Status in all Receive Descriptors */ |
|
2936 rfctl = er32(RFCTL); |
|
2937 rfctl |= E1000_RFCTL_EXTEN; |
|
2938 |
|
2939 /* |
|
2940 * 82571 and greater support packet-split where the protocol |
|
2941 * header is placed in skb->data and the packet data is |
|
2942 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
2943 * In the case of a non-split, skb->data is linearly filled, |
|
2944 * followed by the page buffers. Therefore, skb->data is |
|
2945 * sized to hold the largest protocol header. |
|
2946 * |
|
2947 * allocations using alloc_page take too long for regular MTU |
|
2948 * so only enable packet split for jumbo frames |
|
2949 * |
|
2950 * Using pages when the page size is greater than 16k wastes |
|
2951 * a lot of memory, since we allocate 3 pages at all times |
|
2952 * per packet. |
|
2953 */ |
|
2954 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
2955 if (!(adapter->flags & FLAG_HAS_ERT) && (pages <= 3) && |
|
2956 (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
|
2957 adapter->rx_ps_pages = pages; |
|
2958 else |
|
2959 adapter->rx_ps_pages = 0; |
|
2960 |
|
2961 if (adapter->rx_ps_pages) { |
|
2962 u32 psrctl = 0; |
|
2963 |
|
2964 /* |
|
2965 * disable packet split support for IPv6 extension headers, |
|
2966 * because some malformed IPv6 headers can hang the Rx |
|
2967 */ |
|
2968 rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
|
2969 E1000_RFCTL_NEW_IPV6_EXT_DIS); |
|
2970 |
|
2971 /* Enable Packet split descriptors */ |
|
2972 rctl |= E1000_RCTL_DTYP_PS; |
|
2973 |
|
2974 psrctl |= adapter->rx_ps_bsize0 >> |
|
2975 E1000_PSRCTL_BSIZE0_SHIFT; |
|
2976 |
|
2977 switch (adapter->rx_ps_pages) { |
|
2978 case 3: |
|
2979 psrctl |= PAGE_SIZE << |
|
2980 E1000_PSRCTL_BSIZE3_SHIFT; |
|
2981 case 2: |
|
2982 psrctl |= PAGE_SIZE << |
|
2983 E1000_PSRCTL_BSIZE2_SHIFT; |
|
2984 case 1: |
|
2985 psrctl |= PAGE_SIZE >> |
|
2986 E1000_PSRCTL_BSIZE1_SHIFT; |
|
2987 break; |
|
2988 } |
|
2989 |
|
2990 ew32(PSRCTL, psrctl); |
|
2991 } |
|
2992 |
|
2993 ew32(RFCTL, rfctl); |
|
2994 ew32(RCTL, rctl); |
|
2995 /* just started the receive unit, no need to restart */ |
|
2996 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
2997 } |
|
2998 |
|
2999 /** |
|
3000 * e1000_configure_rx - Configure Receive Unit after Reset |
|
3001 * @adapter: board private structure |
|
3002 * |
|
3003 * Configure the Rx unit of the MAC after a reset. |
|
3004 **/ |
|
3005 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
3006 { |
|
3007 struct e1000_hw *hw = &adapter->hw; |
|
3008 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3009 u64 rdba; |
|
3010 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
3011 |
|
3012 if (adapter->rx_ps_pages) { |
|
3013 /* this is a 32 byte descriptor */ |
|
3014 rdlen = rx_ring->count * |
|
3015 sizeof(union e1000_rx_desc_packet_split); |
|
3016 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
3017 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
3018 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3019 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3020 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
3021 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
3022 } else { |
|
3023 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3024 adapter->clean_rx = e1000_clean_rx_irq; |
|
3025 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
3026 } |
|
3027 |
|
3028 /* disable receives while setting up the descriptors */ |
|
3029 rctl = er32(RCTL); |
|
3030 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3031 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3032 e1e_flush(); |
|
3033 usleep_range(10000, 20000); |
|
3034 |
|
3035 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
3036 /* |
|
3037 * set the writeback threshold (only takes effect if the RDTR |
|
3038 * is set). set GRAN=1 and write back up to 0x4 worth, and |
|
3039 * enable prefetching of 0x20 Rx descriptors |
|
3040 * granularity = 01 |
|
3041 * wthresh = 04, |
|
3042 * hthresh = 04, |
|
3043 * pthresh = 0x20 |
|
3044 */ |
|
3045 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3046 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3047 |
|
3048 /* |
|
3049 * override the delay timers for enabling bursting, only if |
|
3050 * the value was not set by the user via module options |
|
3051 */ |
|
3052 if (adapter->rx_int_delay == DEFAULT_RDTR) |
|
3053 adapter->rx_int_delay = BURST_RDTR; |
|
3054 if (adapter->rx_abs_int_delay == DEFAULT_RADV) |
|
3055 adapter->rx_abs_int_delay = BURST_RADV; |
|
3056 } |
|
3057 |
|
3058 /* set the Receive Delay Timer Register */ |
|
3059 ew32(RDTR, adapter->rx_int_delay); |
|
3060 |
|
3061 /* irq moderation */ |
|
3062 ew32(RADV, adapter->rx_abs_int_delay); |
|
3063 if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
|
3064 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
3065 |
|
3066 ctrl_ext = er32(CTRL_EXT); |
|
3067 /* Auto-Mask interrupts upon ICR access */ |
|
3068 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
3069 ew32(IAM, 0xffffffff); |
|
3070 ew32(CTRL_EXT, ctrl_ext); |
|
3071 e1e_flush(); |
|
3072 |
|
3073 /* |
|
3074 * Setup the HW Rx Head and Tail Descriptor Pointers and |
|
3075 * the Base and Length of the Rx Descriptor Ring |
|
3076 */ |
|
3077 rdba = rx_ring->dma; |
|
3078 ew32(RDBAL, (rdba & DMA_BIT_MASK(32))); |
|
3079 ew32(RDBAH, (rdba >> 32)); |
|
3080 ew32(RDLEN, rdlen); |
|
3081 ew32(RDH, 0); |
|
3082 ew32(RDT, 0); |
|
3083 rx_ring->head = E1000_RDH; |
|
3084 rx_ring->tail = E1000_RDT; |
|
3085 |
|
3086 /* Enable Receive Checksum Offload for TCP and UDP */ |
|
3087 rxcsum = er32(RXCSUM); |
|
3088 if (adapter->netdev->features & NETIF_F_RXCSUM) { |
|
3089 rxcsum |= E1000_RXCSUM_TUOFL; |
|
3090 |
|
3091 /* |
|
3092 * IPv4 payload checksum for UDP fragments must be |
|
3093 * used in conjunction with packet-split. |
|
3094 */ |
|
3095 if (adapter->rx_ps_pages) |
|
3096 rxcsum |= E1000_RXCSUM_IPPCSE; |
|
3097 } else { |
|
3098 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
3099 /* no need to clear IPPCSE as it defaults to 0 */ |
|
3100 } |
|
3101 ew32(RXCSUM, rxcsum); |
|
3102 |
|
3103 /* |
|
3104 * Enable early receives on supported devices, only takes effect when |
|
3105 * packet size is equal or larger than the specified value (in 8 byte |
|
3106 * units), e.g. using jumbo frames when setting to E1000_ERT_2048 |
|
3107 */ |
|
3108 if ((adapter->flags & FLAG_HAS_ERT) || |
|
3109 (adapter->hw.mac.type == e1000_pch2lan)) { |
|
3110 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3111 u32 rxdctl = er32(RXDCTL(0)); |
|
3112 ew32(RXDCTL(0), rxdctl | 0x3); |
|
3113 if (adapter->flags & FLAG_HAS_ERT) |
|
3114 ew32(ERT, E1000_ERT_2048 | (1 << 13)); |
|
3115 /* |
|
3116 * With jumbo frames and early-receive enabled, |
|
3117 * excessive C-state transition latencies result in |
|
3118 * dropped transactions. |
|
3119 */ |
|
3120 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55); |
|
3121 } else { |
|
3122 pm_qos_update_request(&adapter->netdev->pm_qos_req, |
|
3123 PM_QOS_DEFAULT_VALUE); |
|
3124 } |
|
3125 } |
|
3126 |
|
3127 /* Enable Receives */ |
|
3128 ew32(RCTL, rctl); |
|
3129 } |
|
3130 |
|
3131 /** |
|
3132 * e1000_update_mc_addr_list - Update Multicast addresses |
|
3133 * @hw: pointer to the HW structure |
|
3134 * @mc_addr_list: array of multicast addresses to program |
|
3135 * @mc_addr_count: number of multicast addresses to program |
|
3136 * |
|
3137 * Updates the Multicast Table Array. |
|
3138 * The caller must have a packed mc_addr_list of multicast addresses. |
|
3139 **/ |
|
3140 static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list, |
|
3141 u32 mc_addr_count) |
|
3142 { |
|
3143 hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count); |
|
3144 } |
|
3145 |
|
3146 /** |
|
3147 * e1000_set_multi - Multicast and Promiscuous mode set |
|
3148 * @netdev: network interface device structure |
|
3149 * |
|
3150 * The set_multi entry point is called whenever the multicast address |
|
3151 * list or the network interface flags are updated. This routine is |
|
3152 * responsible for configuring the hardware for proper multicast, |
|
3153 * promiscuous mode, and all-multi behavior. |
|
3154 **/ |
|
3155 static void e1000_set_multi(struct net_device *netdev) |
|
3156 { |
|
3157 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3158 struct e1000_hw *hw = &adapter->hw; |
|
3159 struct netdev_hw_addr *ha; |
|
3160 u8 *mta_list; |
|
3161 u32 rctl; |
|
3162 |
|
3163 /* Check for Promiscuous and All Multicast modes */ |
|
3164 |
|
3165 rctl = er32(RCTL); |
|
3166 |
|
3167 if (netdev->flags & IFF_PROMISC) { |
|
3168 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3169 rctl &= ~E1000_RCTL_VFE; |
|
3170 /* Do not hardware filter VLANs in promisc mode */ |
|
3171 e1000e_vlan_filter_disable(adapter); |
|
3172 } else { |
|
3173 if (netdev->flags & IFF_ALLMULTI) { |
|
3174 rctl |= E1000_RCTL_MPE; |
|
3175 rctl &= ~E1000_RCTL_UPE; |
|
3176 } else { |
|
3177 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3178 } |
|
3179 e1000e_vlan_filter_enable(adapter); |
|
3180 } |
|
3181 |
|
3182 ew32(RCTL, rctl); |
|
3183 |
|
3184 if (!netdev_mc_empty(netdev)) { |
|
3185 int i = 0; |
|
3186 |
|
3187 mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); |
|
3188 if (!mta_list) |
|
3189 return; |
|
3190 |
|
3191 /* prepare a packed array of only addresses. */ |
|
3192 netdev_for_each_mc_addr(ha, netdev) |
|
3193 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
|
3194 |
|
3195 e1000_update_mc_addr_list(hw, mta_list, i); |
|
3196 kfree(mta_list); |
|
3197 } else { |
|
3198 /* |
|
3199 * if we're called from probe, we might not have |
|
3200 * anything to do here, so clear out the list |
|
3201 */ |
|
3202 e1000_update_mc_addr_list(hw, NULL, 0); |
|
3203 } |
|
3204 |
|
3205 if (netdev->features & NETIF_F_HW_VLAN_RX) |
|
3206 e1000e_vlan_strip_enable(adapter); |
|
3207 else |
|
3208 e1000e_vlan_strip_disable(adapter); |
|
3209 } |
|
3210 |
|
3211 /** |
|
3212 * e1000_configure - configure the hardware for Rx and Tx |
|
3213 * @adapter: private board structure |
|
3214 **/ |
|
3215 static void e1000_configure(struct e1000_adapter *adapter) |
|
3216 { |
|
3217 e1000_set_multi(adapter->netdev); |
|
3218 |
|
3219 e1000_restore_vlan(adapter); |
|
3220 e1000_init_manageability_pt(adapter); |
|
3221 |
|
3222 e1000_configure_tx(adapter); |
|
3223 e1000_setup_rctl(adapter); |
|
3224 e1000_configure_rx(adapter); |
|
3225 adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring), |
|
3226 GFP_KERNEL); |
|
3227 } |
|
3228 |
|
3229 /** |
|
3230 * e1000e_power_up_phy - restore link in case the phy was powered down |
|
3231 * @adapter: address of board private structure |
|
3232 * |
|
3233 * The phy may be powered down to save power and turn off link when the |
|
3234 * driver is unloaded and wake on lan is not enabled (among others) |
|
3235 * *** this routine MUST be followed by a call to e1000e_reset *** |
|
3236 **/ |
|
3237 void e1000e_power_up_phy(struct e1000_adapter *adapter) |
|
3238 { |
|
3239 if (adapter->hw.phy.ops.power_up) |
|
3240 adapter->hw.phy.ops.power_up(&adapter->hw); |
|
3241 |
|
3242 adapter->hw.mac.ops.setup_link(&adapter->hw); |
|
3243 } |
|
3244 |
|
3245 /** |
|
3246 * e1000_power_down_phy - Power down the PHY |
|
3247 * |
|
3248 * Power down the PHY so no link is implied when interface is down. |
|
3249 * The PHY cannot be powered down if management or WoL is active. |
|
3250 */ |
|
3251 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
3252 { |
|
3253 /* WoL is enabled */ |
|
3254 if (adapter->wol) |
|
3255 return; |
|
3256 |
|
3257 if (adapter->hw.phy.ops.power_down) |
|
3258 adapter->hw.phy.ops.power_down(&adapter->hw); |
|
3259 } |
|
3260 |
|
3261 /** |
|
3262 * e1000e_reset - bring the hardware into a known good state |
|
3263 * |
|
3264 * This function boots the hardware and enables some settings that |
|
3265 * require a configuration cycle of the hardware - those cannot be |
|
3266 * set/changed during runtime. After reset the device needs to be |
|
3267 * properly configured for Rx, Tx etc. |
|
3268 */ |
|
3269 void e1000e_reset(struct e1000_adapter *adapter) |
|
3270 { |
|
3271 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
3272 struct e1000_fc_info *fc = &adapter->hw.fc; |
|
3273 struct e1000_hw *hw = &adapter->hw; |
|
3274 u32 tx_space, min_tx_space, min_rx_space; |
|
3275 u32 pba = adapter->pba; |
|
3276 u16 hwm; |
|
3277 |
|
3278 /* reset Packet Buffer Allocation to default */ |
|
3279 ew32(PBA, pba); |
|
3280 |
|
3281 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3282 /* |
|
3283 * To maintain wire speed transmits, the Tx FIFO should be |
|
3284 * large enough to accommodate two full transmit packets, |
|
3285 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
3286 * the Rx FIFO should be large enough to accommodate at least |
|
3287 * one full receive packet and is similarly rounded up and |
|
3288 * expressed in KB. |
|
3289 */ |
|
3290 pba = er32(PBA); |
|
3291 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
3292 tx_space = pba >> 16; |
|
3293 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
3294 pba &= 0xffff; |
|
3295 /* |
|
3296 * the Tx fifo also stores 16 bytes of information about the Tx |
|
3297 * but don't include ethernet FCS because hardware appends it |
|
3298 */ |
|
3299 min_tx_space = (adapter->max_frame_size + |
|
3300 sizeof(struct e1000_tx_desc) - |
|
3301 ETH_FCS_LEN) * 2; |
|
3302 min_tx_space = ALIGN(min_tx_space, 1024); |
|
3303 min_tx_space >>= 10; |
|
3304 /* software strips receive CRC, so leave room for it */ |
|
3305 min_rx_space = adapter->max_frame_size; |
|
3306 min_rx_space = ALIGN(min_rx_space, 1024); |
|
3307 min_rx_space >>= 10; |
|
3308 |
|
3309 /* |
|
3310 * If current Tx allocation is less than the min Tx FIFO size, |
|
3311 * and the min Tx FIFO size is less than the current Rx FIFO |
|
3312 * allocation, take space away from current Rx allocation |
|
3313 */ |
|
3314 if ((tx_space < min_tx_space) && |
|
3315 ((min_tx_space - tx_space) < pba)) { |
|
3316 pba -= min_tx_space - tx_space; |
|
3317 |
|
3318 /* |
|
3319 * if short on Rx space, Rx wins and must trump Tx |
|
3320 * adjustment or use Early Receive if available |
|
3321 */ |
|
3322 if ((pba < min_rx_space) && |
|
3323 (!(adapter->flags & FLAG_HAS_ERT))) |
|
3324 /* ERT enabled in e1000_configure_rx */ |
|
3325 pba = min_rx_space; |
|
3326 } |
|
3327 |
|
3328 ew32(PBA, pba); |
|
3329 } |
|
3330 |
|
3331 /* |
|
3332 * flow control settings |
|
3333 * |
|
3334 * The high water mark must be low enough to fit one full frame |
|
3335 * (or the size used for early receive) above it in the Rx FIFO. |
|
3336 * Set it to the lower of: |
|
3337 * - 90% of the Rx FIFO size, and |
|
3338 * - the full Rx FIFO size minus the early receive size (for parts |
|
3339 * with ERT support assuming ERT set to E1000_ERT_2048), or |
|
3340 * - the full Rx FIFO size minus one full frame |
|
3341 */ |
|
3342 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
|
3343 fc->pause_time = 0xFFFF; |
|
3344 else |
|
3345 fc->pause_time = E1000_FC_PAUSE_TIME; |
|
3346 fc->send_xon = 1; |
|
3347 fc->current_mode = fc->requested_mode; |
|
3348 |
|
3349 switch (hw->mac.type) { |
|
3350 default: |
|
3351 if ((adapter->flags & FLAG_HAS_ERT) && |
|
3352 (adapter->netdev->mtu > ETH_DATA_LEN)) |
|
3353 hwm = min(((pba << 10) * 9 / 10), |
|
3354 ((pba << 10) - (E1000_ERT_2048 << 3))); |
|
3355 else |
|
3356 hwm = min(((pba << 10) * 9 / 10), |
|
3357 ((pba << 10) - adapter->max_frame_size)); |
|
3358 |
|
3359 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
|
3360 fc->low_water = fc->high_water - 8; |
|
3361 break; |
|
3362 case e1000_pchlan: |
|
3363 /* |
|
3364 * Workaround PCH LOM adapter hangs with certain network |
|
3365 * loads. If hangs persist, try disabling Tx flow control. |
|
3366 */ |
|
3367 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3368 fc->high_water = 0x3500; |
|
3369 fc->low_water = 0x1500; |
|
3370 } else { |
|
3371 fc->high_water = 0x5000; |
|
3372 fc->low_water = 0x3000; |
|
3373 } |
|
3374 fc->refresh_time = 0x1000; |
|
3375 break; |
|
3376 case e1000_pch2lan: |
|
3377 fc->high_water = 0x05C20; |
|
3378 fc->low_water = 0x05048; |
|
3379 fc->pause_time = 0x0650; |
|
3380 fc->refresh_time = 0x0400; |
|
3381 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3382 pba = 14; |
|
3383 ew32(PBA, pba); |
|
3384 } |
|
3385 break; |
|
3386 } |
|
3387 |
|
3388 /* |
|
3389 * Disable Adaptive Interrupt Moderation if 2 full packets cannot |
|
3390 * fit in receive buffer and early-receive not supported. |
|
3391 */ |
|
3392 if (adapter->itr_setting & 0x3) { |
|
3393 if (((adapter->max_frame_size * 2) > (pba << 10)) && |
|
3394 !(adapter->flags & FLAG_HAS_ERT)) { |
|
3395 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
|
3396 dev_info(&adapter->pdev->dev, |
|
3397 "Interrupt Throttle Rate turned off\n"); |
|
3398 adapter->flags2 |= FLAG2_DISABLE_AIM; |
|
3399 ew32(ITR, 0); |
|
3400 } |
|
3401 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
3402 dev_info(&adapter->pdev->dev, |
|
3403 "Interrupt Throttle Rate turned on\n"); |
|
3404 adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
|
3405 adapter->itr = 20000; |
|
3406 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
3407 } |
|
3408 } |
|
3409 |
|
3410 /* Allow time for pending master requests to run */ |
|
3411 mac->ops.reset_hw(hw); |
|
3412 |
|
3413 /* |
|
3414 * For parts with AMT enabled, let the firmware know |
|
3415 * that the network interface is in control |
|
3416 */ |
|
3417 if (adapter->flags & FLAG_HAS_AMT) |
|
3418 e1000e_get_hw_control(adapter); |
|
3419 |
|
3420 ew32(WUC, 0); |
|
3421 |
|
3422 if (mac->ops.init_hw(hw)) |
|
3423 e_err("Hardware Error\n"); |
|
3424 |
|
3425 e1000_update_mng_vlan(adapter); |
|
3426 |
|
3427 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
3428 ew32(VET, ETH_P_8021Q); |
|
3429 |
|
3430 e1000e_reset_adaptive(hw); |
|
3431 |
|
3432 if (!netif_running(adapter->netdev) && |
|
3433 !test_bit(__E1000_TESTING, &adapter->state)) { |
|
3434 e1000_power_down_phy(adapter); |
|
3435 return; |
|
3436 } |
|
3437 |
|
3438 e1000_get_phy_info(hw); |
|
3439 |
|
3440 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
|
3441 !(adapter->flags & FLAG_SMART_POWER_DOWN)) { |
|
3442 u16 phy_data = 0; |
|
3443 /* |
|
3444 * speed up time to link by disabling smart power down, ignore |
|
3445 * the return value of this function because there is nothing |
|
3446 * different we would do if it failed |
|
3447 */ |
|
3448 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
|
3449 phy_data &= ~IGP02E1000_PM_SPD; |
|
3450 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); |
|
3451 } |
|
3452 } |
|
3453 |
|
3454 int e1000e_up(struct e1000_adapter *adapter) |
|
3455 { |
|
3456 struct e1000_hw *hw = &adapter->hw; |
|
3457 |
|
3458 /* hardware has been reset, we need to reload some things */ |
|
3459 e1000_configure(adapter); |
|
3460 |
|
3461 clear_bit(__E1000_DOWN, &adapter->state); |
|
3462 |
|
3463 napi_enable(&adapter->napi); |
|
3464 if (adapter->msix_entries) |
|
3465 e1000_configure_msix(adapter); |
|
3466 e1000_irq_enable(adapter); |
|
3467 |
|
3468 netif_start_queue(adapter->netdev); |
|
3469 |
|
3470 /* fire a link change interrupt to start the watchdog */ |
|
3471 if (adapter->msix_entries) |
|
3472 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3473 else |
|
3474 ew32(ICS, E1000_ICS_LSC); |
|
3475 |
|
3476 return 0; |
|
3477 } |
|
3478 |
|
3479 static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
|
3480 { |
|
3481 struct e1000_hw *hw = &adapter->hw; |
|
3482 |
|
3483 if (!(adapter->flags2 & FLAG2_DMA_BURST)) |
|
3484 return; |
|
3485 |
|
3486 /* flush pending descriptor writebacks to memory */ |
|
3487 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
3488 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
3489 |
|
3490 /* execute the writes immediately */ |
|
3491 e1e_flush(); |
|
3492 } |
|
3493 |
|
3494 static void e1000e_update_stats(struct e1000_adapter *adapter); |
|
3495 |
|
3496 void e1000e_down(struct e1000_adapter *adapter) |
|
3497 { |
|
3498 struct net_device *netdev = adapter->netdev; |
|
3499 struct e1000_hw *hw = &adapter->hw; |
|
3500 u32 tctl, rctl; |
|
3501 |
|
3502 /* |
|
3503 * signal that we're down so the interrupt handler does not |
|
3504 * reschedule our watchdog timer |
|
3505 */ |
|
3506 set_bit(__E1000_DOWN, &adapter->state); |
|
3507 |
|
3508 /* disable receives in the hardware */ |
|
3509 rctl = er32(RCTL); |
|
3510 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3511 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3512 /* flush and sleep below */ |
|
3513 |
|
3514 netif_stop_queue(netdev); |
|
3515 |
|
3516 /* disable transmits in the hardware */ |
|
3517 tctl = er32(TCTL); |
|
3518 tctl &= ~E1000_TCTL_EN; |
|
3519 ew32(TCTL, tctl); |
|
3520 |
|
3521 /* flush both disables and wait for them to finish */ |
|
3522 e1e_flush(); |
|
3523 usleep_range(10000, 20000); |
|
3524 |
|
3525 napi_disable(&adapter->napi); |
|
3526 e1000_irq_disable(adapter); |
|
3527 |
|
3528 del_timer_sync(&adapter->watchdog_timer); |
|
3529 del_timer_sync(&adapter->phy_info_timer); |
|
3530 |
|
3531 netif_carrier_off(netdev); |
|
3532 |
|
3533 spin_lock(&adapter->stats64_lock); |
|
3534 e1000e_update_stats(adapter); |
|
3535 spin_unlock(&adapter->stats64_lock); |
|
3536 |
|
3537 e1000e_flush_descriptors(adapter); |
|
3538 e1000_clean_tx_ring(adapter); |
|
3539 e1000_clean_rx_ring(adapter); |
|
3540 |
|
3541 adapter->link_speed = 0; |
|
3542 adapter->link_duplex = 0; |
|
3543 |
|
3544 if (!pci_channel_offline(adapter->pdev)) |
|
3545 e1000e_reset(adapter); |
|
3546 |
|
3547 /* |
|
3548 * TODO: for power management, we could drop the link and |
|
3549 * pci_disable_device here. |
|
3550 */ |
|
3551 } |
|
3552 |
|
3553 void e1000e_reinit_locked(struct e1000_adapter *adapter) |
|
3554 { |
|
3555 might_sleep(); |
|
3556 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
3557 usleep_range(1000, 2000); |
|
3558 e1000e_down(adapter); |
|
3559 e1000e_up(adapter); |
|
3560 clear_bit(__E1000_RESETTING, &adapter->state); |
|
3561 } |
|
3562 |
|
3563 /** |
|
3564 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
3565 * @adapter: board private structure to initialize |
|
3566 * |
|
3567 * e1000_sw_init initializes the Adapter private data structure. |
|
3568 * Fields are initialized based on PCI device information and |
|
3569 * OS network device settings (MTU size). |
|
3570 **/ |
|
3571 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
3572 { |
|
3573 struct net_device *netdev = adapter->netdev; |
|
3574 |
|
3575 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
|
3576 adapter->rx_ps_bsize0 = 128; |
|
3577 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
|
3578 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
|
3579 |
|
3580 spin_lock_init(&adapter->stats64_lock); |
|
3581 |
|
3582 e1000e_set_interrupt_capability(adapter); |
|
3583 |
|
3584 if (e1000_alloc_queues(adapter)) |
|
3585 return -ENOMEM; |
|
3586 |
|
3587 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
3588 e1000_irq_disable(adapter); |
|
3589 |
|
3590 set_bit(__E1000_DOWN, &adapter->state); |
|
3591 return 0; |
|
3592 } |
|
3593 |
|
3594 /** |
|
3595 * e1000_intr_msi_test - Interrupt Handler |
|
3596 * @irq: interrupt number |
|
3597 * @data: pointer to a network interface device structure |
|
3598 **/ |
|
3599 static irqreturn_t e1000_intr_msi_test(int irq, void *data) |
|
3600 { |
|
3601 struct net_device *netdev = data; |
|
3602 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3603 struct e1000_hw *hw = &adapter->hw; |
|
3604 u32 icr = er32(ICR); |
|
3605 |
|
3606 e_dbg("icr is %08X\n", icr); |
|
3607 if (icr & E1000_ICR_RXSEQ) { |
|
3608 adapter->flags &= ~FLAG_MSI_TEST_FAILED; |
|
3609 wmb(); |
|
3610 } |
|
3611 |
|
3612 return IRQ_HANDLED; |
|
3613 } |
|
3614 |
|
3615 /** |
|
3616 * e1000_test_msi_interrupt - Returns 0 for successful test |
|
3617 * @adapter: board private struct |
|
3618 * |
|
3619 * code flow taken from tg3.c |
|
3620 **/ |
|
3621 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) |
|
3622 { |
|
3623 struct net_device *netdev = adapter->netdev; |
|
3624 struct e1000_hw *hw = &adapter->hw; |
|
3625 int err; |
|
3626 |
|
3627 /* poll_enable hasn't been called yet, so don't need disable */ |
|
3628 /* clear any pending events */ |
|
3629 er32(ICR); |
|
3630 |
|
3631 /* free the real vector and request a test handler */ |
|
3632 e1000_free_irq(adapter); |
|
3633 e1000e_reset_interrupt_capability(adapter); |
|
3634 |
|
3635 /* Assume that the test fails, if it succeeds then the test |
|
3636 * MSI irq handler will unset this flag */ |
|
3637 adapter->flags |= FLAG_MSI_TEST_FAILED; |
|
3638 |
|
3639 err = pci_enable_msi(adapter->pdev); |
|
3640 if (err) |
|
3641 goto msi_test_failed; |
|
3642 |
|
3643 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
|
3644 netdev->name, netdev); |
|
3645 if (err) { |
|
3646 pci_disable_msi(adapter->pdev); |
|
3647 goto msi_test_failed; |
|
3648 } |
|
3649 |
|
3650 wmb(); |
|
3651 |
|
3652 e1000_irq_enable(adapter); |
|
3653 |
|
3654 /* fire an unusual interrupt on the test handler */ |
|
3655 ew32(ICS, E1000_ICS_RXSEQ); |
|
3656 e1e_flush(); |
|
3657 msleep(50); |
|
3658 |
|
3659 e1000_irq_disable(adapter); |
|
3660 |
|
3661 rmb(); |
|
3662 |
|
3663 if (adapter->flags & FLAG_MSI_TEST_FAILED) { |
|
3664 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
3665 e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
|
3666 } else |
|
3667 e_dbg("MSI interrupt test succeeded!\n"); |
|
3668 |
|
3669 free_irq(adapter->pdev->irq, netdev); |
|
3670 pci_disable_msi(adapter->pdev); |
|
3671 |
|
3672 msi_test_failed: |
|
3673 e1000e_set_interrupt_capability(adapter); |
|
3674 return e1000_request_irq(adapter); |
|
3675 } |
|
3676 |
|
3677 /** |
|
3678 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored |
|
3679 * @adapter: board private struct |
|
3680 * |
|
3681 * code flow taken from tg3.c, called with e1000 interrupts disabled. |
|
3682 **/ |
|
3683 static int e1000_test_msi(struct e1000_adapter *adapter) |
|
3684 { |
|
3685 int err; |
|
3686 u16 pci_cmd; |
|
3687 |
|
3688 if (!(adapter->flags & FLAG_MSI_ENABLED)) |
|
3689 return 0; |
|
3690 |
|
3691 /* disable SERR in case the MSI write causes a master abort */ |
|
3692 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3693 if (pci_cmd & PCI_COMMAND_SERR) |
|
3694 pci_write_config_word(adapter->pdev, PCI_COMMAND, |
|
3695 pci_cmd & ~PCI_COMMAND_SERR); |
|
3696 |
|
3697 err = e1000_test_msi_interrupt(adapter); |
|
3698 |
|
3699 /* re-enable SERR */ |
|
3700 if (pci_cmd & PCI_COMMAND_SERR) { |
|
3701 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
3702 pci_cmd |= PCI_COMMAND_SERR; |
|
3703 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); |
|
3704 } |
|
3705 |
|
3706 return err; |
|
3707 } |
|
3708 |
|
3709 /** |
|
3710 * e1000_open - Called when a network interface is made active |
|
3711 * @netdev: network interface device structure |
|
3712 * |
|
3713 * Returns 0 on success, negative value on failure |
|
3714 * |
|
3715 * The open entry point is called when a network interface is made |
|
3716 * active by the system (IFF_UP). At this point all resources needed |
|
3717 * for transmit and receive operations are allocated, the interrupt |
|
3718 * handler is registered with the OS, the watchdog timer is started, |
|
3719 * and the stack is notified that the interface is ready. |
|
3720 **/ |
|
3721 static int e1000_open(struct net_device *netdev) |
|
3722 { |
|
3723 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3724 struct e1000_hw *hw = &adapter->hw; |
|
3725 struct pci_dev *pdev = adapter->pdev; |
|
3726 int err; |
|
3727 |
|
3728 /* disallow open during test */ |
|
3729 if (test_bit(__E1000_TESTING, &adapter->state)) |
|
3730 return -EBUSY; |
|
3731 |
|
3732 pm_runtime_get_sync(&pdev->dev); |
|
3733 |
|
3734 netif_carrier_off(netdev); |
|
3735 |
|
3736 /* allocate transmit descriptors */ |
|
3737 err = e1000e_setup_tx_resources(adapter); |
|
3738 if (err) |
|
3739 goto err_setup_tx; |
|
3740 |
|
3741 /* allocate receive descriptors */ |
|
3742 err = e1000e_setup_rx_resources(adapter); |
|
3743 if (err) |
|
3744 goto err_setup_rx; |
|
3745 |
|
3746 /* |
|
3747 * If AMT is enabled, let the firmware know that the network |
|
3748 * interface is now open and reset the part to a known state. |
|
3749 */ |
|
3750 if (adapter->flags & FLAG_HAS_AMT) { |
|
3751 e1000e_get_hw_control(adapter); |
|
3752 e1000e_reset(adapter); |
|
3753 } |
|
3754 |
|
3755 e1000e_power_up_phy(adapter); |
|
3756 |
|
3757 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
3758 if ((adapter->hw.mng_cookie.status & |
|
3759 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
|
3760 e1000_update_mng_vlan(adapter); |
|
3761 |
|
3762 /* DMA latency requirement to workaround early-receive/jumbo issue */ |
|
3763 if ((adapter->flags & FLAG_HAS_ERT) || |
|
3764 (adapter->hw.mac.type == e1000_pch2lan)) |
|
3765 pm_qos_add_request(&adapter->netdev->pm_qos_req, |
|
3766 PM_QOS_CPU_DMA_LATENCY, |
|
3767 PM_QOS_DEFAULT_VALUE); |
|
3768 |
|
3769 /* |
|
3770 * before we allocate an interrupt, we must be ready to handle it. |
|
3771 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
3772 * as soon as we call pci_request_irq, so we have to setup our |
|
3773 * clean_rx handler before we do so. |
|
3774 */ |
|
3775 e1000_configure(adapter); |
|
3776 |
|
3777 err = e1000_request_irq(adapter); |
|
3778 if (err) |
|
3779 goto err_req_irq; |
|
3780 |
|
3781 /* |
|
3782 * Work around PCIe errata with MSI interrupts causing some chipsets to |
|
3783 * ignore e1000e MSI messages, which means we need to test our MSI |
|
3784 * interrupt now |
|
3785 */ |
|
3786 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
|
3787 err = e1000_test_msi(adapter); |
|
3788 if (err) { |
|
3789 e_err("Interrupt allocation failed\n"); |
|
3790 goto err_req_irq; |
|
3791 } |
|
3792 } |
|
3793 |
|
3794 /* From here on the code is the same as e1000e_up() */ |
|
3795 clear_bit(__E1000_DOWN, &adapter->state); |
|
3796 |
|
3797 napi_enable(&adapter->napi); |
|
3798 |
|
3799 e1000_irq_enable(adapter); |
|
3800 |
|
3801 adapter->tx_hang_recheck = false; |
|
3802 netif_start_queue(netdev); |
|
3803 |
|
3804 adapter->idle_check = true; |
|
3805 pm_runtime_put(&pdev->dev); |
|
3806 |
|
3807 /* fire a link status change interrupt to start the watchdog */ |
|
3808 if (adapter->msix_entries) |
|
3809 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
3810 else |
|
3811 ew32(ICS, E1000_ICS_LSC); |
|
3812 |
|
3813 return 0; |
|
3814 |
|
3815 err_req_irq: |
|
3816 e1000e_release_hw_control(adapter); |
|
3817 e1000_power_down_phy(adapter); |
|
3818 e1000e_free_rx_resources(adapter); |
|
3819 err_setup_rx: |
|
3820 e1000e_free_tx_resources(adapter); |
|
3821 err_setup_tx: |
|
3822 e1000e_reset(adapter); |
|
3823 pm_runtime_put_sync(&pdev->dev); |
|
3824 |
|
3825 return err; |
|
3826 } |
|
3827 |
|
3828 /** |
|
3829 * e1000_close - Disables a network interface |
|
3830 * @netdev: network interface device structure |
|
3831 * |
|
3832 * Returns 0, this is not allowed to fail |
|
3833 * |
|
3834 * The close entry point is called when an interface is de-activated |
|
3835 * by the OS. The hardware is still under the drivers control, but |
|
3836 * needs to be disabled. A global MAC reset is issued to stop the |
|
3837 * hardware, and all transmit and receive resources are freed. |
|
3838 **/ |
|
3839 static int e1000_close(struct net_device *netdev) |
|
3840 { |
|
3841 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3842 struct pci_dev *pdev = adapter->pdev; |
|
3843 |
|
3844 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
3845 |
|
3846 pm_runtime_get_sync(&pdev->dev); |
|
3847 |
|
3848 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
3849 e1000e_down(adapter); |
|
3850 e1000_free_irq(adapter); |
|
3851 } |
|
3852 e1000_power_down_phy(adapter); |
|
3853 |
|
3854 e1000e_free_tx_resources(adapter); |
|
3855 e1000e_free_rx_resources(adapter); |
|
3856 |
|
3857 /* |
|
3858 * kill manageability vlan ID if supported, but not if a vlan with |
|
3859 * the same ID is registered on the host OS (let 8021q kill it) |
|
3860 */ |
|
3861 if (adapter->hw.mng_cookie.status & |
|
3862 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
|
3863 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
3864 |
|
3865 /* |
|
3866 * If AMT is enabled, let the firmware know that the network |
|
3867 * interface is now closed |
|
3868 */ |
|
3869 if ((adapter->flags & FLAG_HAS_AMT) && |
|
3870 !test_bit(__E1000_TESTING, &adapter->state)) |
|
3871 e1000e_release_hw_control(adapter); |
|
3872 |
|
3873 if ((adapter->flags & FLAG_HAS_ERT) || |
|
3874 (adapter->hw.mac.type == e1000_pch2lan)) |
|
3875 pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
|
3876 |
|
3877 pm_runtime_put_sync(&pdev->dev); |
|
3878 |
|
3879 return 0; |
|
3880 } |
|
3881 /** |
|
3882 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
3883 * @netdev: network interface device structure |
|
3884 * @p: pointer to an address structure |
|
3885 * |
|
3886 * Returns 0 on success, negative on failure |
|
3887 **/ |
|
3888 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
3889 { |
|
3890 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3891 struct sockaddr *addr = p; |
|
3892 |
|
3893 if (!is_valid_ether_addr(addr->sa_data)) |
|
3894 return -EADDRNOTAVAIL; |
|
3895 |
|
3896 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
3897 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
|
3898 |
|
3899 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
|
3900 |
|
3901 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { |
|
3902 /* activate the work around */ |
|
3903 e1000e_set_laa_state_82571(&adapter->hw, 1); |
|
3904 |
|
3905 /* |
|
3906 * Hold a copy of the LAA in RAR[14] This is done so that |
|
3907 * between the time RAR[0] gets clobbered and the time it |
|
3908 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
3909 * of the RARs and no incoming packets directed to this port |
|
3910 * are dropped. Eventually the LAA will be in RAR[0] and |
|
3911 * RAR[14] |
|
3912 */ |
|
3913 e1000e_rar_set(&adapter->hw, |
|
3914 adapter->hw.mac.addr, |
|
3915 adapter->hw.mac.rar_entry_count - 1); |
|
3916 } |
|
3917 |
|
3918 return 0; |
|
3919 } |
|
3920 |
|
3921 /** |
|
3922 * e1000e_update_phy_task - work thread to update phy |
|
3923 * @work: pointer to our work struct |
|
3924 * |
|
3925 * this worker thread exists because we must acquire a |
|
3926 * semaphore to read the phy, which we could msleep while |
|
3927 * waiting for it, and we can't msleep in a timer. |
|
3928 **/ |
|
3929 static void e1000e_update_phy_task(struct work_struct *work) |
|
3930 { |
|
3931 struct e1000_adapter *adapter = container_of(work, |
|
3932 struct e1000_adapter, update_phy_task); |
|
3933 |
|
3934 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
3935 return; |
|
3936 |
|
3937 e1000_get_phy_info(&adapter->hw); |
|
3938 } |
|
3939 |
|
3940 /* |
|
3941 * Need to wait a few seconds after link up to get diagnostic information from |
|
3942 * the phy |
|
3943 */ |
|
3944 static void e1000_update_phy_info(unsigned long data) |
|
3945 { |
|
3946 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
3947 |
|
3948 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
3949 return; |
|
3950 |
|
3951 schedule_work(&adapter->update_phy_task); |
|
3952 } |
|
3953 |
|
3954 /** |
|
3955 * e1000e_update_phy_stats - Update the PHY statistics counters |
|
3956 * @adapter: board private structure |
|
3957 * |
|
3958 * Read/clear the upper 16-bit PHY registers and read/accumulate lower |
|
3959 **/ |
|
3960 static void e1000e_update_phy_stats(struct e1000_adapter *adapter) |
|
3961 { |
|
3962 struct e1000_hw *hw = &adapter->hw; |
|
3963 s32 ret_val; |
|
3964 u16 phy_data; |
|
3965 |
|
3966 ret_val = hw->phy.ops.acquire(hw); |
|
3967 if (ret_val) |
|
3968 return; |
|
3969 |
|
3970 /* |
|
3971 * A page set is expensive so check if already on desired page. |
|
3972 * If not, set to the page with the PHY status registers. |
|
3973 */ |
|
3974 hw->phy.addr = 1; |
|
3975 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
3976 &phy_data); |
|
3977 if (ret_val) |
|
3978 goto release; |
|
3979 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
|
3980 ret_val = hw->phy.ops.set_page(hw, |
|
3981 HV_STATS_PAGE << IGP_PAGE_SHIFT); |
|
3982 if (ret_val) |
|
3983 goto release; |
|
3984 } |
|
3985 |
|
3986 /* Single Collision Count */ |
|
3987 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
|
3988 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); |
|
3989 if (!ret_val) |
|
3990 adapter->stats.scc += phy_data; |
|
3991 |
|
3992 /* Excessive Collision Count */ |
|
3993 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
|
3994 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); |
|
3995 if (!ret_val) |
|
3996 adapter->stats.ecol += phy_data; |
|
3997 |
|
3998 /* Multiple Collision Count */ |
|
3999 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
|
4000 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); |
|
4001 if (!ret_val) |
|
4002 adapter->stats.mcc += phy_data; |
|
4003 |
|
4004 /* Late Collision Count */ |
|
4005 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
|
4006 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); |
|
4007 if (!ret_val) |
|
4008 adapter->stats.latecol += phy_data; |
|
4009 |
|
4010 /* Collision Count - also used for adaptive IFS */ |
|
4011 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
|
4012 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); |
|
4013 if (!ret_val) |
|
4014 hw->mac.collision_delta = phy_data; |
|
4015 |
|
4016 /* Defer Count */ |
|
4017 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
|
4018 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); |
|
4019 if (!ret_val) |
|
4020 adapter->stats.dc += phy_data; |
|
4021 |
|
4022 /* Transmit with no CRS */ |
|
4023 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
|
4024 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); |
|
4025 if (!ret_val) |
|
4026 adapter->stats.tncrs += phy_data; |
|
4027 |
|
4028 release: |
|
4029 hw->phy.ops.release(hw); |
|
4030 } |
|
4031 |
|
4032 /** |
|
4033 * e1000e_update_stats - Update the board statistics counters |
|
4034 * @adapter: board private structure |
|
4035 **/ |
|
4036 static void e1000e_update_stats(struct e1000_adapter *adapter) |
|
4037 { |
|
4038 struct net_device *netdev = adapter->netdev; |
|
4039 struct e1000_hw *hw = &adapter->hw; |
|
4040 struct pci_dev *pdev = adapter->pdev; |
|
4041 |
|
4042 /* |
|
4043 * Prevent stats update while adapter is being reset, or if the pci |
|
4044 * connection is down. |
|
4045 */ |
|
4046 if (adapter->link_speed == 0) |
|
4047 return; |
|
4048 if (pci_channel_offline(pdev)) |
|
4049 return; |
|
4050 |
|
4051 adapter->stats.crcerrs += er32(CRCERRS); |
|
4052 adapter->stats.gprc += er32(GPRC); |
|
4053 adapter->stats.gorc += er32(GORCL); |
|
4054 er32(GORCH); /* Clear gorc */ |
|
4055 adapter->stats.bprc += er32(BPRC); |
|
4056 adapter->stats.mprc += er32(MPRC); |
|
4057 adapter->stats.roc += er32(ROC); |
|
4058 |
|
4059 adapter->stats.mpc += er32(MPC); |
|
4060 |
|
4061 /* Half-duplex statistics */ |
|
4062 if (adapter->link_duplex == HALF_DUPLEX) { |
|
4063 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { |
|
4064 e1000e_update_phy_stats(adapter); |
|
4065 } else { |
|
4066 adapter->stats.scc += er32(SCC); |
|
4067 adapter->stats.ecol += er32(ECOL); |
|
4068 adapter->stats.mcc += er32(MCC); |
|
4069 adapter->stats.latecol += er32(LATECOL); |
|
4070 adapter->stats.dc += er32(DC); |
|
4071 |
|
4072 hw->mac.collision_delta = er32(COLC); |
|
4073 |
|
4074 if ((hw->mac.type != e1000_82574) && |
|
4075 (hw->mac.type != e1000_82583)) |
|
4076 adapter->stats.tncrs += er32(TNCRS); |
|
4077 } |
|
4078 adapter->stats.colc += hw->mac.collision_delta; |
|
4079 } |
|
4080 |
|
4081 adapter->stats.xonrxc += er32(XONRXC); |
|
4082 adapter->stats.xontxc += er32(XONTXC); |
|
4083 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
4084 adapter->stats.xofftxc += er32(XOFFTXC); |
|
4085 adapter->stats.gptc += er32(GPTC); |
|
4086 adapter->stats.gotc += er32(GOTCL); |
|
4087 er32(GOTCH); /* Clear gotc */ |
|
4088 adapter->stats.rnbc += er32(RNBC); |
|
4089 adapter->stats.ruc += er32(RUC); |
|
4090 |
|
4091 adapter->stats.mptc += er32(MPTC); |
|
4092 adapter->stats.bptc += er32(BPTC); |
|
4093 |
|
4094 /* used for adaptive IFS */ |
|
4095 |
|
4096 hw->mac.tx_packet_delta = er32(TPT); |
|
4097 adapter->stats.tpt += hw->mac.tx_packet_delta; |
|
4098 |
|
4099 adapter->stats.algnerrc += er32(ALGNERRC); |
|
4100 adapter->stats.rxerrc += er32(RXERRC); |
|
4101 adapter->stats.cexterr += er32(CEXTERR); |
|
4102 adapter->stats.tsctc += er32(TSCTC); |
|
4103 adapter->stats.tsctfc += er32(TSCTFC); |
|
4104 |
|
4105 /* Fill out the OS statistics structure */ |
|
4106 netdev->stats.multicast = adapter->stats.mprc; |
|
4107 netdev->stats.collisions = adapter->stats.colc; |
|
4108 |
|
4109 /* Rx Errors */ |
|
4110 |
|
4111 /* |
|
4112 * RLEC on some newer hardware can be incorrect so build |
|
4113 * our own version based on RUC and ROC |
|
4114 */ |
|
4115 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
4116 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
4117 adapter->stats.ruc + adapter->stats.roc + |
|
4118 adapter->stats.cexterr; |
|
4119 netdev->stats.rx_length_errors = adapter->stats.ruc + |
|
4120 adapter->stats.roc; |
|
4121 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
4122 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
4123 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
4124 |
|
4125 /* Tx Errors */ |
|
4126 netdev->stats.tx_errors = adapter->stats.ecol + |
|
4127 adapter->stats.latecol; |
|
4128 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
4129 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
4130 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
4131 |
|
4132 /* Tx Dropped needs to be maintained elsewhere */ |
|
4133 |
|
4134 /* Management Stats */ |
|
4135 adapter->stats.mgptc += er32(MGTPTC); |
|
4136 adapter->stats.mgprc += er32(MGTPRC); |
|
4137 adapter->stats.mgpdc += er32(MGTPDC); |
|
4138 } |
|
4139 |
|
4140 /** |
|
4141 * e1000_phy_read_status - Update the PHY register status snapshot |
|
4142 * @adapter: board private structure |
|
4143 **/ |
|
4144 static void e1000_phy_read_status(struct e1000_adapter *adapter) |
|
4145 { |
|
4146 struct e1000_hw *hw = &adapter->hw; |
|
4147 struct e1000_phy_regs *phy = &adapter->phy_regs; |
|
4148 |
|
4149 if ((er32(STATUS) & E1000_STATUS_LU) && |
|
4150 (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
|
4151 int ret_val; |
|
4152 |
|
4153 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); |
|
4154 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); |
|
4155 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); |
|
4156 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); |
|
4157 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); |
|
4158 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); |
|
4159 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); |
|
4160 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); |
|
4161 if (ret_val) |
|
4162 e_warn("Error reading PHY register\n"); |
|
4163 } else { |
|
4164 /* |
|
4165 * Do not read PHY registers if link is not up |
|
4166 * Set values to typical power-on defaults |
|
4167 */ |
|
4168 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); |
|
4169 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | |
|
4170 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | |
|
4171 BMSR_ERCAP); |
|
4172 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | |
|
4173 ADVERTISE_ALL | ADVERTISE_CSMA); |
|
4174 phy->lpa = 0; |
|
4175 phy->expansion = EXPANSION_ENABLENPAGE; |
|
4176 phy->ctrl1000 = ADVERTISE_1000FULL; |
|
4177 phy->stat1000 = 0; |
|
4178 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); |
|
4179 } |
|
4180 } |
|
4181 |
|
4182 static void e1000_print_link_info(struct e1000_adapter *adapter) |
|
4183 { |
|
4184 struct e1000_hw *hw = &adapter->hw; |
|
4185 u32 ctrl = er32(CTRL); |
|
4186 |
|
4187 /* Link status message must follow this format for user tools */ |
|
4188 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, " |
|
4189 "Flow Control: %s\n", |
|
4190 adapter->netdev->name, |
|
4191 adapter->link_speed, |
|
4192 (adapter->link_duplex == FULL_DUPLEX) ? |
|
4193 "Full Duplex" : "Half Duplex", |
|
4194 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? |
|
4195 "Rx/Tx" : |
|
4196 ((ctrl & E1000_CTRL_RFCE) ? "Rx" : |
|
4197 ((ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"))); |
|
4198 } |
|
4199 |
|
4200 static bool e1000e_has_link(struct e1000_adapter *adapter) |
|
4201 { |
|
4202 struct e1000_hw *hw = &adapter->hw; |
|
4203 bool link_active = 0; |
|
4204 s32 ret_val = 0; |
|
4205 |
|
4206 /* |
|
4207 * get_link_status is set on LSC (link status) interrupt or |
|
4208 * Rx sequence error interrupt. get_link_status will stay |
|
4209 * false until the check_for_link establishes link |
|
4210 * for copper adapters ONLY |
|
4211 */ |
|
4212 switch (hw->phy.media_type) { |
|
4213 case e1000_media_type_copper: |
|
4214 if (hw->mac.get_link_status) { |
|
4215 ret_val = hw->mac.ops.check_for_link(hw); |
|
4216 link_active = !hw->mac.get_link_status; |
|
4217 } else { |
|
4218 link_active = 1; |
|
4219 } |
|
4220 break; |
|
4221 case e1000_media_type_fiber: |
|
4222 ret_val = hw->mac.ops.check_for_link(hw); |
|
4223 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
4224 break; |
|
4225 case e1000_media_type_internal_serdes: |
|
4226 ret_val = hw->mac.ops.check_for_link(hw); |
|
4227 link_active = adapter->hw.mac.serdes_has_link; |
|
4228 break; |
|
4229 default: |
|
4230 case e1000_media_type_unknown: |
|
4231 break; |
|
4232 } |
|
4233 |
|
4234 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && |
|
4235 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
4236 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ |
|
4237 e_info("Gigabit has been disabled, downgrading speed\n"); |
|
4238 } |
|
4239 |
|
4240 return link_active; |
|
4241 } |
|
4242 |
|
4243 static void e1000e_enable_receives(struct e1000_adapter *adapter) |
|
4244 { |
|
4245 /* make sure the receive unit is started */ |
|
4246 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4247 (adapter->flags & FLAG_RX_RESTART_NOW)) { |
|
4248 struct e1000_hw *hw = &adapter->hw; |
|
4249 u32 rctl = er32(RCTL); |
|
4250 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
4251 adapter->flags &= ~FLAG_RX_RESTART_NOW; |
|
4252 } |
|
4253 } |
|
4254 |
|
4255 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
|
4256 { |
|
4257 struct e1000_hw *hw = &adapter->hw; |
|
4258 |
|
4259 /* |
|
4260 * With 82574 controllers, PHY needs to be checked periodically |
|
4261 * for hung state and reset, if two calls return true |
|
4262 */ |
|
4263 if (e1000_check_phy_82574(hw)) |
|
4264 adapter->phy_hang_count++; |
|
4265 else |
|
4266 adapter->phy_hang_count = 0; |
|
4267 |
|
4268 if (adapter->phy_hang_count > 1) { |
|
4269 adapter->phy_hang_count = 0; |
|
4270 schedule_work(&adapter->reset_task); |
|
4271 } |
|
4272 } |
|
4273 |
|
4274 /** |
|
4275 * e1000_watchdog - Timer Call-back |
|
4276 * @data: pointer to adapter cast into an unsigned long |
|
4277 **/ |
|
4278 static void e1000_watchdog(unsigned long data) |
|
4279 { |
|
4280 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
4281 |
|
4282 /* Do the rest outside of interrupt context */ |
|
4283 schedule_work(&adapter->watchdog_task); |
|
4284 |
|
4285 /* TODO: make this use queue_delayed_work() */ |
|
4286 } |
|
4287 |
|
4288 static void e1000_watchdog_task(struct work_struct *work) |
|
4289 { |
|
4290 struct e1000_adapter *adapter = container_of(work, |
|
4291 struct e1000_adapter, watchdog_task); |
|
4292 struct net_device *netdev = adapter->netdev; |
|
4293 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
4294 struct e1000_phy_info *phy = &adapter->hw.phy; |
|
4295 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4296 struct e1000_hw *hw = &adapter->hw; |
|
4297 u32 link, tctl; |
|
4298 |
|
4299 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4300 return; |
|
4301 |
|
4302 link = e1000e_has_link(adapter); |
|
4303 if ((netif_carrier_ok(netdev)) && link) { |
|
4304 /* Cancel scheduled suspend requests. */ |
|
4305 pm_runtime_resume(netdev->dev.parent); |
|
4306 |
|
4307 e1000e_enable_receives(adapter); |
|
4308 goto link_up; |
|
4309 } |
|
4310 |
|
4311 if ((e1000e_enable_tx_pkt_filtering(hw)) && |
|
4312 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) |
|
4313 e1000_update_mng_vlan(adapter); |
|
4314 |
|
4315 if (link) { |
|
4316 if (!netif_carrier_ok(netdev)) { |
|
4317 bool txb2b = 1; |
|
4318 |
|
4319 /* Cancel scheduled suspend requests. */ |
|
4320 pm_runtime_resume(netdev->dev.parent); |
|
4321 |
|
4322 /* update snapshot of PHY registers on LSC */ |
|
4323 e1000_phy_read_status(adapter); |
|
4324 mac->ops.get_link_up_info(&adapter->hw, |
|
4325 &adapter->link_speed, |
|
4326 &adapter->link_duplex); |
|
4327 e1000_print_link_info(adapter); |
|
4328 /* |
|
4329 * On supported PHYs, check for duplex mismatch only |
|
4330 * if link has autonegotiated at 10/100 half |
|
4331 */ |
|
4332 if ((hw->phy.type == e1000_phy_igp_3 || |
|
4333 hw->phy.type == e1000_phy_bm) && |
|
4334 (hw->mac.autoneg == true) && |
|
4335 (adapter->link_speed == SPEED_10 || |
|
4336 adapter->link_speed == SPEED_100) && |
|
4337 (adapter->link_duplex == HALF_DUPLEX)) { |
|
4338 u16 autoneg_exp; |
|
4339 |
|
4340 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); |
|
4341 |
|
4342 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) |
|
4343 e_info("Autonegotiated half duplex but" |
|
4344 " link partner cannot autoneg. " |
|
4345 " Try forcing full duplex if " |
|
4346 "link gets many collisions.\n"); |
|
4347 } |
|
4348 |
|
4349 /* adjust timeout factor according to speed/duplex */ |
|
4350 adapter->tx_timeout_factor = 1; |
|
4351 switch (adapter->link_speed) { |
|
4352 case SPEED_10: |
|
4353 txb2b = 0; |
|
4354 adapter->tx_timeout_factor = 16; |
|
4355 break; |
|
4356 case SPEED_100: |
|
4357 txb2b = 0; |
|
4358 adapter->tx_timeout_factor = 10; |
|
4359 break; |
|
4360 } |
|
4361 |
|
4362 /* |
|
4363 * workaround: re-program speed mode bit after |
|
4364 * link-up event |
|
4365 */ |
|
4366 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
|
4367 !txb2b) { |
|
4368 u32 tarc0; |
|
4369 tarc0 = er32(TARC(0)); |
|
4370 tarc0 &= ~SPEED_MODE_BIT; |
|
4371 ew32(TARC(0), tarc0); |
|
4372 } |
|
4373 |
|
4374 /* |
|
4375 * disable TSO for pcie and 10/100 speeds, to avoid |
|
4376 * some hardware issues |
|
4377 */ |
|
4378 if (!(adapter->flags & FLAG_TSO_FORCE)) { |
|
4379 switch (adapter->link_speed) { |
|
4380 case SPEED_10: |
|
4381 case SPEED_100: |
|
4382 e_info("10/100 speed: disabling TSO\n"); |
|
4383 netdev->features &= ~NETIF_F_TSO; |
|
4384 netdev->features &= ~NETIF_F_TSO6; |
|
4385 break; |
|
4386 case SPEED_1000: |
|
4387 netdev->features |= NETIF_F_TSO; |
|
4388 netdev->features |= NETIF_F_TSO6; |
|
4389 break; |
|
4390 default: |
|
4391 /* oops */ |
|
4392 break; |
|
4393 } |
|
4394 } |
|
4395 |
|
4396 /* |
|
4397 * enable transmits in the hardware, need to do this |
|
4398 * after setting TARC(0) |
|
4399 */ |
|
4400 tctl = er32(TCTL); |
|
4401 tctl |= E1000_TCTL_EN; |
|
4402 ew32(TCTL, tctl); |
|
4403 |
|
4404 /* |
|
4405 * Perform any post-link-up configuration before |
|
4406 * reporting link up. |
|
4407 */ |
|
4408 if (phy->ops.cfg_on_link_up) |
|
4409 phy->ops.cfg_on_link_up(hw); |
|
4410 |
|
4411 netif_carrier_on(netdev); |
|
4412 |
|
4413 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
4414 mod_timer(&adapter->phy_info_timer, |
|
4415 round_jiffies(jiffies + 2 * HZ)); |
|
4416 } |
|
4417 } else { |
|
4418 if (netif_carrier_ok(netdev)) { |
|
4419 adapter->link_speed = 0; |
|
4420 adapter->link_duplex = 0; |
|
4421 /* Link status message must follow this format */ |
|
4422 printk(KERN_INFO "e1000e: %s NIC Link is Down\n", |
|
4423 adapter->netdev->name); |
|
4424 netif_carrier_off(netdev); |
|
4425 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
4426 mod_timer(&adapter->phy_info_timer, |
|
4427 round_jiffies(jiffies + 2 * HZ)); |
|
4428 |
|
4429 if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
|
4430 schedule_work(&adapter->reset_task); |
|
4431 else |
|
4432 pm_schedule_suspend(netdev->dev.parent, |
|
4433 LINK_TIMEOUT); |
|
4434 } |
|
4435 } |
|
4436 |
|
4437 link_up: |
|
4438 spin_lock(&adapter->stats64_lock); |
|
4439 e1000e_update_stats(adapter); |
|
4440 |
|
4441 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
4442 adapter->tpt_old = adapter->stats.tpt; |
|
4443 mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
4444 adapter->colc_old = adapter->stats.colc; |
|
4445 |
|
4446 adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
|
4447 adapter->gorc_old = adapter->stats.gorc; |
|
4448 adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
|
4449 adapter->gotc_old = adapter->stats.gotc; |
|
4450 spin_unlock(&adapter->stats64_lock); |
|
4451 |
|
4452 e1000e_update_adaptive(&adapter->hw); |
|
4453 |
|
4454 if (!netif_carrier_ok(netdev) && |
|
4455 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) { |
|
4456 /* |
|
4457 * We've lost link, so the controller stops DMA, |
|
4458 * but we've got queued Tx work that's never going |
|
4459 * to get done, so reset controller to flush Tx. |
|
4460 * (Do the reset outside of interrupt context). |
|
4461 */ |
|
4462 schedule_work(&adapter->reset_task); |
|
4463 /* return immediately since reset is imminent */ |
|
4464 return; |
|
4465 } |
|
4466 |
|
4467 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
4468 if (adapter->itr_setting == 4) { |
|
4469 /* |
|
4470 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
4471 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
4472 * everyone else is between 2000-8000. |
|
4473 */ |
|
4474 u32 goc = (adapter->gotc + adapter->gorc) / 10000; |
|
4475 u32 dif = (adapter->gotc > adapter->gorc ? |
|
4476 adapter->gotc - adapter->gorc : |
|
4477 adapter->gorc - adapter->gotc) / 10000; |
|
4478 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
4479 |
|
4480 ew32(ITR, 1000000000 / (itr * 256)); |
|
4481 } |
|
4482 |
|
4483 /* Cause software interrupt to ensure Rx ring is cleaned */ |
|
4484 if (adapter->msix_entries) |
|
4485 ew32(ICS, adapter->rx_ring->ims_val); |
|
4486 else |
|
4487 ew32(ICS, E1000_ICS_RXDMT0); |
|
4488 |
|
4489 /* flush pending descriptors to memory before detecting Tx hang */ |
|
4490 e1000e_flush_descriptors(adapter); |
|
4491 |
|
4492 /* Force detection of hung controller every watchdog period */ |
|
4493 adapter->detect_tx_hung = 1; |
|
4494 |
|
4495 /* |
|
4496 * With 82571 controllers, LAA may be overwritten due to controller |
|
4497 * reset from the other port. Set the appropriate LAA in RAR[0] |
|
4498 */ |
|
4499 if (e1000e_get_laa_state_82571(hw)) |
|
4500 e1000e_rar_set(hw, adapter->hw.mac.addr, 0); |
|
4501 |
|
4502 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
|
4503 e1000e_check_82574_phy_workaround(adapter); |
|
4504 |
|
4505 /* Reset the timer */ |
|
4506 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
4507 mod_timer(&adapter->watchdog_timer, |
|
4508 round_jiffies(jiffies + 2 * HZ)); |
|
4509 } |
|
4510 |
|
4511 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
4512 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
4513 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
4514 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
4515 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
4516 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
4517 |
|
4518 static int e1000_tso(struct e1000_adapter *adapter, |
|
4519 struct sk_buff *skb) |
|
4520 { |
|
4521 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4522 struct e1000_context_desc *context_desc; |
|
4523 struct e1000_buffer *buffer_info; |
|
4524 unsigned int i; |
|
4525 u32 cmd_length = 0; |
|
4526 u16 ipcse = 0, tucse, mss; |
|
4527 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
4528 |
|
4529 if (!skb_is_gso(skb)) |
|
4530 return 0; |
|
4531 |
|
4532 if (skb_header_cloned(skb)) { |
|
4533 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
4534 |
|
4535 if (err) |
|
4536 return err; |
|
4537 } |
|
4538 |
|
4539 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
4540 mss = skb_shinfo(skb)->gso_size; |
|
4541 if (skb->protocol == htons(ETH_P_IP)) { |
|
4542 struct iphdr *iph = ip_hdr(skb); |
|
4543 iph->tot_len = 0; |
|
4544 iph->check = 0; |
|
4545 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, |
|
4546 0, IPPROTO_TCP, 0); |
|
4547 cmd_length = E1000_TXD_CMD_IP; |
|
4548 ipcse = skb_transport_offset(skb) - 1; |
|
4549 } else if (skb_is_gso_v6(skb)) { |
|
4550 ipv6_hdr(skb)->payload_len = 0; |
|
4551 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
4552 &ipv6_hdr(skb)->daddr, |
|
4553 0, IPPROTO_TCP, 0); |
|
4554 ipcse = 0; |
|
4555 } |
|
4556 ipcss = skb_network_offset(skb); |
|
4557 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
4558 tucss = skb_transport_offset(skb); |
|
4559 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
4560 tucse = 0; |
|
4561 |
|
4562 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
4563 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
4564 |
|
4565 i = tx_ring->next_to_use; |
|
4566 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4567 buffer_info = &tx_ring->buffer_info[i]; |
|
4568 |
|
4569 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
4570 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
4571 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
4572 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
4573 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
4574 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
4575 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
4576 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
4577 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
4578 |
|
4579 buffer_info->time_stamp = jiffies; |
|
4580 buffer_info->next_to_watch = i; |
|
4581 |
|
4582 i++; |
|
4583 if (i == tx_ring->count) |
|
4584 i = 0; |
|
4585 tx_ring->next_to_use = i; |
|
4586 |
|
4587 return 1; |
|
4588 } |
|
4589 |
|
4590 static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) |
|
4591 { |
|
4592 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4593 struct e1000_context_desc *context_desc; |
|
4594 struct e1000_buffer *buffer_info; |
|
4595 unsigned int i; |
|
4596 u8 css; |
|
4597 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
4598 __be16 protocol; |
|
4599 |
|
4600 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
4601 return 0; |
|
4602 |
|
4603 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
|
4604 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; |
|
4605 else |
|
4606 protocol = skb->protocol; |
|
4607 |
|
4608 switch (protocol) { |
|
4609 case cpu_to_be16(ETH_P_IP): |
|
4610 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
4611 cmd_len |= E1000_TXD_CMD_TCP; |
|
4612 break; |
|
4613 case cpu_to_be16(ETH_P_IPV6): |
|
4614 /* XXX not handling all IPV6 headers */ |
|
4615 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
4616 cmd_len |= E1000_TXD_CMD_TCP; |
|
4617 break; |
|
4618 default: |
|
4619 if (unlikely(net_ratelimit())) |
|
4620 e_warn("checksum_partial proto=%x!\n", |
|
4621 be16_to_cpu(protocol)); |
|
4622 break; |
|
4623 } |
|
4624 |
|
4625 css = skb_checksum_start_offset(skb); |
|
4626 |
|
4627 i = tx_ring->next_to_use; |
|
4628 buffer_info = &tx_ring->buffer_info[i]; |
|
4629 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
4630 |
|
4631 context_desc->lower_setup.ip_config = 0; |
|
4632 context_desc->upper_setup.tcp_fields.tucss = css; |
|
4633 context_desc->upper_setup.tcp_fields.tucso = |
|
4634 css + skb->csum_offset; |
|
4635 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
4636 context_desc->tcp_seg_setup.data = 0; |
|
4637 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
4638 |
|
4639 buffer_info->time_stamp = jiffies; |
|
4640 buffer_info->next_to_watch = i; |
|
4641 |
|
4642 i++; |
|
4643 if (i == tx_ring->count) |
|
4644 i = 0; |
|
4645 tx_ring->next_to_use = i; |
|
4646 |
|
4647 return 1; |
|
4648 } |
|
4649 |
|
4650 #define E1000_MAX_PER_TXD 8192 |
|
4651 #define E1000_MAX_TXD_PWR 12 |
|
4652 |
|
4653 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
4654 struct sk_buff *skb, unsigned int first, |
|
4655 unsigned int max_per_txd, unsigned int nr_frags, |
|
4656 unsigned int mss) |
|
4657 { |
|
4658 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4659 struct pci_dev *pdev = adapter->pdev; |
|
4660 struct e1000_buffer *buffer_info; |
|
4661 unsigned int len = skb_headlen(skb); |
|
4662 unsigned int offset = 0, size, count = 0, i; |
|
4663 unsigned int f, bytecount, segs; |
|
4664 |
|
4665 i = tx_ring->next_to_use; |
|
4666 |
|
4667 while (len) { |
|
4668 buffer_info = &tx_ring->buffer_info[i]; |
|
4669 size = min(len, max_per_txd); |
|
4670 |
|
4671 buffer_info->length = size; |
|
4672 buffer_info->time_stamp = jiffies; |
|
4673 buffer_info->next_to_watch = i; |
|
4674 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4675 skb->data + offset, |
|
4676 size, DMA_TO_DEVICE); |
|
4677 buffer_info->mapped_as_page = false; |
|
4678 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4679 goto dma_error; |
|
4680 |
|
4681 len -= size; |
|
4682 offset += size; |
|
4683 count++; |
|
4684 |
|
4685 if (len) { |
|
4686 i++; |
|
4687 if (i == tx_ring->count) |
|
4688 i = 0; |
|
4689 } |
|
4690 } |
|
4691 |
|
4692 for (f = 0; f < nr_frags; f++) { |
|
4693 const struct skb_frag_struct *frag; |
|
4694 |
|
4695 frag = &skb_shinfo(skb)->frags[f]; |
|
4696 len = skb_frag_size(frag); |
|
4697 offset = 0; |
|
4698 |
|
4699 while (len) { |
|
4700 i++; |
|
4701 if (i == tx_ring->count) |
|
4702 i = 0; |
|
4703 |
|
4704 buffer_info = &tx_ring->buffer_info[i]; |
|
4705 size = min(len, max_per_txd); |
|
4706 |
|
4707 buffer_info->length = size; |
|
4708 buffer_info->time_stamp = jiffies; |
|
4709 buffer_info->next_to_watch = i; |
|
4710 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
|
4711 offset, size, DMA_TO_DEVICE); |
|
4712 buffer_info->mapped_as_page = true; |
|
4713 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
4714 goto dma_error; |
|
4715 |
|
4716 len -= size; |
|
4717 offset += size; |
|
4718 count++; |
|
4719 } |
|
4720 } |
|
4721 |
|
4722 segs = skb_shinfo(skb)->gso_segs ? : 1; |
|
4723 /* multiply data chunks by size of headers */ |
|
4724 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; |
|
4725 |
|
4726 tx_ring->buffer_info[i].skb = skb; |
|
4727 tx_ring->buffer_info[i].segs = segs; |
|
4728 tx_ring->buffer_info[i].bytecount = bytecount; |
|
4729 tx_ring->buffer_info[first].next_to_watch = i; |
|
4730 |
|
4731 return count; |
|
4732 |
|
4733 dma_error: |
|
4734 dev_err(&pdev->dev, "Tx DMA map failed\n"); |
|
4735 buffer_info->dma = 0; |
|
4736 if (count) |
|
4737 count--; |
|
4738 |
|
4739 while (count--) { |
|
4740 if (i == 0) |
|
4741 i += tx_ring->count; |
|
4742 i--; |
|
4743 buffer_info = &tx_ring->buffer_info[i]; |
|
4744 e1000_put_txbuf(adapter, buffer_info); |
|
4745 } |
|
4746 |
|
4747 return 0; |
|
4748 } |
|
4749 |
|
4750 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
4751 int tx_flags, int count) |
|
4752 { |
|
4753 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4754 struct e1000_tx_desc *tx_desc = NULL; |
|
4755 struct e1000_buffer *buffer_info; |
|
4756 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
4757 unsigned int i; |
|
4758 |
|
4759 if (tx_flags & E1000_TX_FLAGS_TSO) { |
|
4760 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
4761 E1000_TXD_CMD_TSE; |
|
4762 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4763 |
|
4764 if (tx_flags & E1000_TX_FLAGS_IPV4) |
|
4765 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
4766 } |
|
4767 |
|
4768 if (tx_flags & E1000_TX_FLAGS_CSUM) { |
|
4769 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
4770 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
4771 } |
|
4772 |
|
4773 if (tx_flags & E1000_TX_FLAGS_VLAN) { |
|
4774 txd_lower |= E1000_TXD_CMD_VLE; |
|
4775 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
4776 } |
|
4777 |
|
4778 i = tx_ring->next_to_use; |
|
4779 |
|
4780 do { |
|
4781 buffer_info = &tx_ring->buffer_info[i]; |
|
4782 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
4783 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4784 tx_desc->lower.data = |
|
4785 cpu_to_le32(txd_lower | buffer_info->length); |
|
4786 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
4787 |
|
4788 i++; |
|
4789 if (i == tx_ring->count) |
|
4790 i = 0; |
|
4791 } while (--count > 0); |
|
4792 |
|
4793 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
4794 |
|
4795 /* |
|
4796 * Force memory writes to complete before letting h/w |
|
4797 * know there are new descriptors to fetch. (Only |
|
4798 * applicable for weak-ordered memory model archs, |
|
4799 * such as IA-64). |
|
4800 */ |
|
4801 wmb(); |
|
4802 |
|
4803 tx_ring->next_to_use = i; |
|
4804 |
|
4805 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
4806 e1000e_update_tdt_wa(adapter, i); |
|
4807 else |
|
4808 writel(i, adapter->hw.hw_addr + tx_ring->tail); |
|
4809 |
|
4810 /* |
|
4811 * we need this if more than one processor can write to our tail |
|
4812 * at a time, it synchronizes IO on IA64/Altix systems |
|
4813 */ |
|
4814 mmiowb(); |
|
4815 } |
|
4816 |
|
4817 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
4818 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
4819 struct sk_buff *skb) |
|
4820 { |
|
4821 struct e1000_hw *hw = &adapter->hw; |
|
4822 u16 length, offset; |
|
4823 |
|
4824 if (vlan_tx_tag_present(skb)) { |
|
4825 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
4826 (adapter->hw.mng_cookie.status & |
|
4827 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
|
4828 return 0; |
|
4829 } |
|
4830 |
|
4831 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) |
|
4832 return 0; |
|
4833 |
|
4834 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) |
|
4835 return 0; |
|
4836 |
|
4837 { |
|
4838 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); |
|
4839 struct udphdr *udp; |
|
4840 |
|
4841 if (ip->protocol != IPPROTO_UDP) |
|
4842 return 0; |
|
4843 |
|
4844 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
|
4845 if (ntohs(udp->dest) != 67) |
|
4846 return 0; |
|
4847 |
|
4848 offset = (u8 *)udp + 8 - skb->data; |
|
4849 length = skb->len - offset; |
|
4850 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); |
|
4851 } |
|
4852 |
|
4853 return 0; |
|
4854 } |
|
4855 |
|
4856 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
4857 { |
|
4858 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4859 |
|
4860 netif_stop_queue(netdev); |
|
4861 /* |
|
4862 * Herbert's original patch had: |
|
4863 * smp_mb__after_netif_stop_queue(); |
|
4864 * but since that doesn't exist yet, just open code it. |
|
4865 */ |
|
4866 smp_mb(); |
|
4867 |
|
4868 /* |
|
4869 * We need to check again in a case another CPU has just |
|
4870 * made room available. |
|
4871 */ |
|
4872 if (e1000_desc_unused(adapter->tx_ring) < size) |
|
4873 return -EBUSY; |
|
4874 |
|
4875 /* A reprieve! */ |
|
4876 netif_start_queue(netdev); |
|
4877 ++adapter->restart_queue; |
|
4878 return 0; |
|
4879 } |
|
4880 |
|
4881 static int e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
4882 { |
|
4883 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4884 |
|
4885 if (e1000_desc_unused(adapter->tx_ring) >= size) |
|
4886 return 0; |
|
4887 return __e1000_maybe_stop_tx(netdev, size); |
|
4888 } |
|
4889 |
|
4890 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
4891 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
4892 struct net_device *netdev) |
|
4893 { |
|
4894 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4895 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4896 unsigned int first; |
|
4897 unsigned int max_per_txd = E1000_MAX_PER_TXD; |
|
4898 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
4899 unsigned int tx_flags = 0; |
|
4900 unsigned int len = skb_headlen(skb); |
|
4901 unsigned int nr_frags; |
|
4902 unsigned int mss; |
|
4903 int count = 0; |
|
4904 int tso; |
|
4905 unsigned int f; |
|
4906 |
|
4907 if (test_bit(__E1000_DOWN, &adapter->state)) { |
|
4908 dev_kfree_skb_any(skb); |
|
4909 return NETDEV_TX_OK; |
|
4910 } |
|
4911 |
|
4912 if (skb->len <= 0) { |
|
4913 dev_kfree_skb_any(skb); |
|
4914 return NETDEV_TX_OK; |
|
4915 } |
|
4916 |
|
4917 mss = skb_shinfo(skb)->gso_size; |
|
4918 /* |
|
4919 * The controller does a simple calculation to |
|
4920 * make sure there is enough room in the FIFO before |
|
4921 * initiating the DMA for each buffer. The calc is: |
|
4922 * 4 = ceil(buffer len/mss). To make sure we don't |
|
4923 * overrun the FIFO, adjust the max buffer len if mss |
|
4924 * drops. |
|
4925 */ |
|
4926 if (mss) { |
|
4927 u8 hdr_len; |
|
4928 max_per_txd = min(mss << 2, max_per_txd); |
|
4929 max_txd_pwr = fls(max_per_txd) - 1; |
|
4930 |
|
4931 /* |
|
4932 * TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
4933 * points to just header, pull a few bytes of payload from |
|
4934 * frags into skb->data |
|
4935 */ |
|
4936 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
4937 /* |
|
4938 * we do this workaround for ES2LAN, but it is un-necessary, |
|
4939 * avoiding it could save a lot of cycles |
|
4940 */ |
|
4941 if (skb->data_len && (hdr_len == len)) { |
|
4942 unsigned int pull_size; |
|
4943 |
|
4944 pull_size = min((unsigned int)4, skb->data_len); |
|
4945 if (!__pskb_pull_tail(skb, pull_size)) { |
|
4946 e_err("__pskb_pull_tail failed.\n"); |
|
4947 dev_kfree_skb_any(skb); |
|
4948 return NETDEV_TX_OK; |
|
4949 } |
|
4950 len = skb_headlen(skb); |
|
4951 } |
|
4952 } |
|
4953 |
|
4954 /* reserve a descriptor for the offload context */ |
|
4955 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
4956 count++; |
|
4957 count++; |
|
4958 |
|
4959 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
4960 |
|
4961 nr_frags = skb_shinfo(skb)->nr_frags; |
|
4962 for (f = 0; f < nr_frags; f++) |
|
4963 count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
|
4964 max_txd_pwr); |
|
4965 |
|
4966 if (adapter->hw.mac.tx_pkt_filtering) |
|
4967 e1000_transfer_dhcp_info(adapter, skb); |
|
4968 |
|
4969 /* |
|
4970 * need: count + 2 desc gap to keep tail from touching |
|
4971 * head, otherwise try next time |
|
4972 */ |
|
4973 if (e1000_maybe_stop_tx(netdev, count + 2)) |
|
4974 return NETDEV_TX_BUSY; |
|
4975 |
|
4976 if (vlan_tx_tag_present(skb)) { |
|
4977 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
4978 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
4979 } |
|
4980 |
|
4981 first = tx_ring->next_to_use; |
|
4982 |
|
4983 tso = e1000_tso(adapter, skb); |
|
4984 if (tso < 0) { |
|
4985 dev_kfree_skb_any(skb); |
|
4986 return NETDEV_TX_OK; |
|
4987 } |
|
4988 |
|
4989 if (tso) |
|
4990 tx_flags |= E1000_TX_FLAGS_TSO; |
|
4991 else if (e1000_tx_csum(adapter, skb)) |
|
4992 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
4993 |
|
4994 /* |
|
4995 * Old method was to assume IPv4 packet by default if TSO was enabled. |
|
4996 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
4997 * no longer assume, we must. |
|
4998 */ |
|
4999 if (skb->protocol == htons(ETH_P_IP)) |
|
5000 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
5001 |
|
5002 /* if count is 0 then mapping error has occurred */ |
|
5003 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); |
|
5004 if (count) { |
|
5005 e1000_tx_queue(adapter, tx_flags, count); |
|
5006 /* Make sure there is space in the ring for the next send. */ |
|
5007 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); |
|
5008 |
|
5009 } else { |
|
5010 dev_kfree_skb_any(skb); |
|
5011 tx_ring->buffer_info[first].time_stamp = 0; |
|
5012 tx_ring->next_to_use = first; |
|
5013 } |
|
5014 |
|
5015 return NETDEV_TX_OK; |
|
5016 } |
|
5017 |
|
5018 /** |
|
5019 * e1000_tx_timeout - Respond to a Tx Hang |
|
5020 * @netdev: network interface device structure |
|
5021 **/ |
|
5022 static void e1000_tx_timeout(struct net_device *netdev) |
|
5023 { |
|
5024 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5025 |
|
5026 /* Do the reset outside of interrupt context */ |
|
5027 adapter->tx_timeout_count++; |
|
5028 schedule_work(&adapter->reset_task); |
|
5029 } |
|
5030 |
|
5031 static void e1000_reset_task(struct work_struct *work) |
|
5032 { |
|
5033 struct e1000_adapter *adapter; |
|
5034 adapter = container_of(work, struct e1000_adapter, reset_task); |
|
5035 |
|
5036 /* don't run the task if already down */ |
|
5037 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
5038 return; |
|
5039 |
|
5040 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
5041 (adapter->flags & FLAG_RX_RESTART_NOW))) { |
|
5042 e1000e_dump(adapter); |
|
5043 e_err("Reset adapter\n"); |
|
5044 } |
|
5045 e1000e_reinit_locked(adapter); |
|
5046 } |
|
5047 |
|
5048 /** |
|
5049 * e1000_get_stats64 - Get System Network Statistics |
|
5050 * @netdev: network interface device structure |
|
5051 * @stats: rtnl_link_stats64 pointer |
|
5052 * |
|
5053 * Returns the address of the device statistics structure. |
|
5054 **/ |
|
5055 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
|
5056 struct rtnl_link_stats64 *stats) |
|
5057 { |
|
5058 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5059 |
|
5060 memset(stats, 0, sizeof(struct rtnl_link_stats64)); |
|
5061 spin_lock(&adapter->stats64_lock); |
|
5062 e1000e_update_stats(adapter); |
|
5063 /* Fill out the OS statistics structure */ |
|
5064 stats->rx_bytes = adapter->stats.gorc; |
|
5065 stats->rx_packets = adapter->stats.gprc; |
|
5066 stats->tx_bytes = adapter->stats.gotc; |
|
5067 stats->tx_packets = adapter->stats.gptc; |
|
5068 stats->multicast = adapter->stats.mprc; |
|
5069 stats->collisions = adapter->stats.colc; |
|
5070 |
|
5071 /* Rx Errors */ |
|
5072 |
|
5073 /* |
|
5074 * RLEC on some newer hardware can be incorrect so build |
|
5075 * our own version based on RUC and ROC |
|
5076 */ |
|
5077 stats->rx_errors = adapter->stats.rxerrc + |
|
5078 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
5079 adapter->stats.ruc + adapter->stats.roc + |
|
5080 adapter->stats.cexterr; |
|
5081 stats->rx_length_errors = adapter->stats.ruc + |
|
5082 adapter->stats.roc; |
|
5083 stats->rx_crc_errors = adapter->stats.crcerrs; |
|
5084 stats->rx_frame_errors = adapter->stats.algnerrc; |
|
5085 stats->rx_missed_errors = adapter->stats.mpc; |
|
5086 |
|
5087 /* Tx Errors */ |
|
5088 stats->tx_errors = adapter->stats.ecol + |
|
5089 adapter->stats.latecol; |
|
5090 stats->tx_aborted_errors = adapter->stats.ecol; |
|
5091 stats->tx_window_errors = adapter->stats.latecol; |
|
5092 stats->tx_carrier_errors = adapter->stats.tncrs; |
|
5093 |
|
5094 /* Tx Dropped needs to be maintained elsewhere */ |
|
5095 |
|
5096 spin_unlock(&adapter->stats64_lock); |
|
5097 return stats; |
|
5098 } |
|
5099 |
|
5100 /** |
|
5101 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
5102 * @netdev: network interface device structure |
|
5103 * @new_mtu: new value for maximum frame size |
|
5104 * |
|
5105 * Returns 0 on success, negative on failure |
|
5106 **/ |
|
5107 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
5108 { |
|
5109 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5110 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
|
5111 |
|
5112 /* Jumbo frame support */ |
|
5113 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
|
5114 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { |
|
5115 e_err("Jumbo Frames not supported.\n"); |
|
5116 return -EINVAL; |
|
5117 } |
|
5118 |
|
5119 /* Supported frame sizes */ |
|
5120 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
|
5121 (max_frame > adapter->max_hw_frame_size)) { |
|
5122 e_err("Unsupported MTU setting\n"); |
|
5123 return -EINVAL; |
|
5124 } |
|
5125 |
|
5126 /* Jumbo frame workaround on 82579 requires CRC be stripped */ |
|
5127 if ((adapter->hw.mac.type == e1000_pch2lan) && |
|
5128 !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
|
5129 (new_mtu > ETH_DATA_LEN)) { |
|
5130 e_err("Jumbo Frames not supported on 82579 when CRC " |
|
5131 "stripping is disabled.\n"); |
|
5132 return -EINVAL; |
|
5133 } |
|
5134 |
|
5135 /* 82573 Errata 17 */ |
|
5136 if (((adapter->hw.mac.type == e1000_82573) || |
|
5137 (adapter->hw.mac.type == e1000_82574)) && |
|
5138 (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) { |
|
5139 adapter->flags2 |= FLAG2_DISABLE_ASPM_L1; |
|
5140 e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1); |
|
5141 } |
|
5142 |
|
5143 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
5144 usleep_range(1000, 2000); |
|
5145 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
|
5146 adapter->max_frame_size = max_frame; |
|
5147 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
|
5148 netdev->mtu = new_mtu; |
|
5149 if (netif_running(netdev)) |
|
5150 e1000e_down(adapter); |
|
5151 |
|
5152 /* |
|
5153 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
5154 * means we reserve 2 more, this pushes us to allocate from the next |
|
5155 * larger slab size. |
|
5156 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
5157 * However with the new *_jumbo_rx* routines, jumbo receives will use |
|
5158 * fragmented skbs |
|
5159 */ |
|
5160 |
|
5161 if (max_frame <= 2048) |
|
5162 adapter->rx_buffer_len = 2048; |
|
5163 else |
|
5164 adapter->rx_buffer_len = 4096; |
|
5165 |
|
5166 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
5167 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
|
5168 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
|
5169 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
|
5170 + ETH_FCS_LEN; |
|
5171 |
|
5172 if (netif_running(netdev)) |
|
5173 e1000e_up(adapter); |
|
5174 else |
|
5175 e1000e_reset(adapter); |
|
5176 |
|
5177 clear_bit(__E1000_RESETTING, &adapter->state); |
|
5178 |
|
5179 return 0; |
|
5180 } |
|
5181 |
|
5182 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
5183 int cmd) |
|
5184 { |
|
5185 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5186 struct mii_ioctl_data *data = if_mii(ifr); |
|
5187 |
|
5188 if (adapter->hw.phy.media_type != e1000_media_type_copper) |
|
5189 return -EOPNOTSUPP; |
|
5190 |
|
5191 switch (cmd) { |
|
5192 case SIOCGMIIPHY: |
|
5193 data->phy_id = adapter->hw.phy.addr; |
|
5194 break; |
|
5195 case SIOCGMIIREG: |
|
5196 e1000_phy_read_status(adapter); |
|
5197 |
|
5198 switch (data->reg_num & 0x1F) { |
|
5199 case MII_BMCR: |
|
5200 data->val_out = adapter->phy_regs.bmcr; |
|
5201 break; |
|
5202 case MII_BMSR: |
|
5203 data->val_out = adapter->phy_regs.bmsr; |
|
5204 break; |
|
5205 case MII_PHYSID1: |
|
5206 data->val_out = (adapter->hw.phy.id >> 16); |
|
5207 break; |
|
5208 case MII_PHYSID2: |
|
5209 data->val_out = (adapter->hw.phy.id & 0xFFFF); |
|
5210 break; |
|
5211 case MII_ADVERTISE: |
|
5212 data->val_out = adapter->phy_regs.advertise; |
|
5213 break; |
|
5214 case MII_LPA: |
|
5215 data->val_out = adapter->phy_regs.lpa; |
|
5216 break; |
|
5217 case MII_EXPANSION: |
|
5218 data->val_out = adapter->phy_regs.expansion; |
|
5219 break; |
|
5220 case MII_CTRL1000: |
|
5221 data->val_out = adapter->phy_regs.ctrl1000; |
|
5222 break; |
|
5223 case MII_STAT1000: |
|
5224 data->val_out = adapter->phy_regs.stat1000; |
|
5225 break; |
|
5226 case MII_ESTATUS: |
|
5227 data->val_out = adapter->phy_regs.estatus; |
|
5228 break; |
|
5229 default: |
|
5230 return -EIO; |
|
5231 } |
|
5232 break; |
|
5233 case SIOCSMIIREG: |
|
5234 default: |
|
5235 return -EOPNOTSUPP; |
|
5236 } |
|
5237 return 0; |
|
5238 } |
|
5239 |
|
5240 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
5241 { |
|
5242 switch (cmd) { |
|
5243 case SIOCGMIIPHY: |
|
5244 case SIOCGMIIREG: |
|
5245 case SIOCSMIIREG: |
|
5246 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
5247 default: |
|
5248 return -EOPNOTSUPP; |
|
5249 } |
|
5250 } |
|
5251 |
|
5252 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
|
5253 { |
|
5254 struct e1000_hw *hw = &adapter->hw; |
|
5255 u32 i, mac_reg; |
|
5256 u16 phy_reg, wuc_enable; |
|
5257 int retval = 0; |
|
5258 |
|
5259 /* copy MAC RARs to PHY RARs */ |
|
5260 e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
|
5261 |
|
5262 retval = hw->phy.ops.acquire(hw); |
|
5263 if (retval) { |
|
5264 e_err("Could not acquire PHY\n"); |
|
5265 return retval; |
|
5266 } |
|
5267 |
|
5268 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ |
|
5269 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5270 if (retval) |
|
5271 goto out; |
|
5272 |
|
5273 /* copy MAC MTA to PHY MTA - only needed for pchlan */ |
|
5274 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
|
5275 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); |
|
5276 hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
|
5277 (u16)(mac_reg & 0xFFFF)); |
|
5278 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, |
|
5279 (u16)((mac_reg >> 16) & 0xFFFF)); |
|
5280 } |
|
5281 |
|
5282 /* configure PHY Rx Control register */ |
|
5283 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
|
5284 mac_reg = er32(RCTL); |
|
5285 if (mac_reg & E1000_RCTL_UPE) |
|
5286 phy_reg |= BM_RCTL_UPE; |
|
5287 if (mac_reg & E1000_RCTL_MPE) |
|
5288 phy_reg |= BM_RCTL_MPE; |
|
5289 phy_reg &= ~(BM_RCTL_MO_MASK); |
|
5290 if (mac_reg & E1000_RCTL_MO_3) |
|
5291 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) |
|
5292 << BM_RCTL_MO_SHIFT); |
|
5293 if (mac_reg & E1000_RCTL_BAM) |
|
5294 phy_reg |= BM_RCTL_BAM; |
|
5295 if (mac_reg & E1000_RCTL_PMCF) |
|
5296 phy_reg |= BM_RCTL_PMCF; |
|
5297 mac_reg = er32(CTRL); |
|
5298 if (mac_reg & E1000_CTRL_RFCE) |
|
5299 phy_reg |= BM_RCTL_RFCE; |
|
5300 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
|
5301 |
|
5302 /* enable PHY wakeup in MAC register */ |
|
5303 ew32(WUFC, wufc); |
|
5304 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); |
|
5305 |
|
5306 /* configure and enable PHY wakeup in PHY registers */ |
|
5307 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
|
5308 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); |
|
5309 |
|
5310 /* activate PHY wakeup */ |
|
5311 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
|
5312 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5313 if (retval) |
|
5314 e_err("Could not set PHY Host Wakeup bit\n"); |
|
5315 out: |
|
5316 hw->phy.ops.release(hw); |
|
5317 |
|
5318 return retval; |
|
5319 } |
|
5320 |
|
5321 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
|
5322 bool runtime) |
|
5323 { |
|
5324 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5325 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5326 struct e1000_hw *hw = &adapter->hw; |
|
5327 u32 ctrl, ctrl_ext, rctl, status; |
|
5328 /* Runtime suspend should only enable wakeup for link changes */ |
|
5329 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
|
5330 int retval = 0; |
|
5331 |
|
5332 netif_device_detach(netdev); |
|
5333 |
|
5334 if (netif_running(netdev)) { |
|
5335 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
5336 e1000e_down(adapter); |
|
5337 e1000_free_irq(adapter); |
|
5338 } |
|
5339 e1000e_reset_interrupt_capability(adapter); |
|
5340 |
|
5341 retval = pci_save_state(pdev); |
|
5342 if (retval) |
|
5343 return retval; |
|
5344 |
|
5345 status = er32(STATUS); |
|
5346 if (status & E1000_STATUS_LU) |
|
5347 wufc &= ~E1000_WUFC_LNKC; |
|
5348 |
|
5349 if (wufc) { |
|
5350 e1000_setup_rctl(adapter); |
|
5351 e1000_set_multi(netdev); |
|
5352 |
|
5353 /* turn on all-multi mode if wake on multicast is enabled */ |
|
5354 if (wufc & E1000_WUFC_MC) { |
|
5355 rctl = er32(RCTL); |
|
5356 rctl |= E1000_RCTL_MPE; |
|
5357 ew32(RCTL, rctl); |
|
5358 } |
|
5359 |
|
5360 ctrl = er32(CTRL); |
|
5361 /* advertise wake from D3Cold */ |
|
5362 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
5363 /* phy power management enable */ |
|
5364 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
5365 ctrl |= E1000_CTRL_ADVD3WUC; |
|
5366 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) |
|
5367 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; |
|
5368 ew32(CTRL, ctrl); |
|
5369 |
|
5370 if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
|
5371 adapter->hw.phy.media_type == |
|
5372 e1000_media_type_internal_serdes) { |
|
5373 /* keep the laser running in D3 */ |
|
5374 ctrl_ext = er32(CTRL_EXT); |
|
5375 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
|
5376 ew32(CTRL_EXT, ctrl_ext); |
|
5377 } |
|
5378 |
|
5379 if (adapter->flags & FLAG_IS_ICH) |
|
5380 e1000_suspend_workarounds_ich8lan(&adapter->hw); |
|
5381 |
|
5382 /* Allow time for pending master requests to run */ |
|
5383 e1000e_disable_pcie_master(&adapter->hw); |
|
5384 |
|
5385 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5386 /* enable wakeup by the PHY */ |
|
5387 retval = e1000_init_phy_wakeup(adapter, wufc); |
|
5388 if (retval) |
|
5389 return retval; |
|
5390 } else { |
|
5391 /* enable wakeup by the MAC */ |
|
5392 ew32(WUFC, wufc); |
|
5393 ew32(WUC, E1000_WUC_PME_EN); |
|
5394 } |
|
5395 } else { |
|
5396 ew32(WUC, 0); |
|
5397 ew32(WUFC, 0); |
|
5398 } |
|
5399 |
|
5400 *enable_wake = !!wufc; |
|
5401 |
|
5402 /* make sure adapter isn't asleep if manageability is enabled */ |
|
5403 if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
|
5404 (hw->mac.ops.check_mng_mode(hw))) |
|
5405 *enable_wake = true; |
|
5406 |
|
5407 if (adapter->hw.phy.type == e1000_phy_igp_3) |
|
5408 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
|
5409 |
|
5410 /* |
|
5411 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
5412 * would have already happened in close and is redundant. |
|
5413 */ |
|
5414 e1000e_release_hw_control(adapter); |
|
5415 |
|
5416 pci_disable_device(pdev); |
|
5417 |
|
5418 return 0; |
|
5419 } |
|
5420 |
|
5421 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) |
|
5422 { |
|
5423 if (sleep && wake) { |
|
5424 pci_prepare_to_sleep(pdev); |
|
5425 return; |
|
5426 } |
|
5427 |
|
5428 pci_wake_from_d3(pdev, wake); |
|
5429 pci_set_power_state(pdev, PCI_D3hot); |
|
5430 } |
|
5431 |
|
5432 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, |
|
5433 bool wake) |
|
5434 { |
|
5435 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5436 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5437 |
|
5438 /* |
|
5439 * The pci-e switch on some quad port adapters will report a |
|
5440 * correctable error when the MAC transitions from D0 to D3. To |
|
5441 * prevent this we need to mask off the correctable errors on the |
|
5442 * downstream port of the pci-e switch. |
|
5443 */ |
|
5444 if (adapter->flags & FLAG_IS_QUAD_PORT) { |
|
5445 struct pci_dev *us_dev = pdev->bus->self; |
|
5446 int pos = pci_pcie_cap(us_dev); |
|
5447 u16 devctl; |
|
5448 |
|
5449 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); |
|
5450 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, |
|
5451 (devctl & ~PCI_EXP_DEVCTL_CERE)); |
|
5452 |
|
5453 e1000_power_off(pdev, sleep, wake); |
|
5454 |
|
5455 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); |
|
5456 } else { |
|
5457 e1000_power_off(pdev, sleep, wake); |
|
5458 } |
|
5459 } |
|
5460 |
|
5461 #ifdef CONFIG_PCIEASPM |
|
5462 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5463 { |
|
5464 pci_disable_link_state_locked(pdev, state); |
|
5465 } |
|
5466 #else |
|
5467 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5468 { |
|
5469 int pos; |
|
5470 u16 reg16; |
|
5471 |
|
5472 /* |
|
5473 * Both device and parent should have the same ASPM setting. |
|
5474 * Disable ASPM in downstream component first and then upstream. |
|
5475 */ |
|
5476 pos = pci_pcie_cap(pdev); |
|
5477 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16); |
|
5478 reg16 &= ~state; |
|
5479 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16); |
|
5480 |
|
5481 if (!pdev->bus->self) |
|
5482 return; |
|
5483 |
|
5484 pos = pci_pcie_cap(pdev->bus->self); |
|
5485 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16); |
|
5486 reg16 &= ~state; |
|
5487 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16); |
|
5488 } |
|
5489 #endif |
|
5490 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
5491 { |
|
5492 dev_info(&pdev->dev, "Disabling ASPM %s %s\n", |
|
5493 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "", |
|
5494 (state & PCIE_LINK_STATE_L1) ? "L1" : ""); |
|
5495 |
|
5496 __e1000e_disable_aspm(pdev, state); |
|
5497 } |
|
5498 |
|
5499 #ifdef CONFIG_PM |
|
5500 static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
|
5501 { |
|
5502 return !!adapter->tx_ring->buffer_info; |
|
5503 } |
|
5504 |
|
5505 static int __e1000_resume(struct pci_dev *pdev) |
|
5506 { |
|
5507 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5508 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5509 struct e1000_hw *hw = &adapter->hw; |
|
5510 u16 aspm_disable_flag = 0; |
|
5511 u32 err; |
|
5512 |
|
5513 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
5514 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
5515 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5516 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
5517 if (aspm_disable_flag) |
|
5518 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
5519 |
|
5520 pci_set_power_state(pdev, PCI_D0); |
|
5521 pci_restore_state(pdev); |
|
5522 pci_save_state(pdev); |
|
5523 |
|
5524 e1000e_set_interrupt_capability(adapter); |
|
5525 if (netif_running(netdev)) { |
|
5526 err = e1000_request_irq(adapter); |
|
5527 if (err) |
|
5528 return err; |
|
5529 } |
|
5530 |
|
5531 if (hw->mac.type == e1000_pch2lan) |
|
5532 e1000_resume_workarounds_pchlan(&adapter->hw); |
|
5533 |
|
5534 e1000e_power_up_phy(adapter); |
|
5535 |
|
5536 /* report the system wakeup cause from S3/S4 */ |
|
5537 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
5538 u16 phy_data; |
|
5539 |
|
5540 e1e_rphy(&adapter->hw, BM_WUS, &phy_data); |
|
5541 if (phy_data) { |
|
5542 e_info("PHY Wakeup cause - %s\n", |
|
5543 phy_data & E1000_WUS_EX ? "Unicast Packet" : |
|
5544 phy_data & E1000_WUS_MC ? "Multicast Packet" : |
|
5545 phy_data & E1000_WUS_BC ? "Broadcast Packet" : |
|
5546 phy_data & E1000_WUS_MAG ? "Magic Packet" : |
|
5547 phy_data & E1000_WUS_LNKC ? "Link Status " |
|
5548 " Change" : "other"); |
|
5549 } |
|
5550 e1e_wphy(&adapter->hw, BM_WUS, ~0); |
|
5551 } else { |
|
5552 u32 wus = er32(WUS); |
|
5553 if (wus) { |
|
5554 e_info("MAC Wakeup cause - %s\n", |
|
5555 wus & E1000_WUS_EX ? "Unicast Packet" : |
|
5556 wus & E1000_WUS_MC ? "Multicast Packet" : |
|
5557 wus & E1000_WUS_BC ? "Broadcast Packet" : |
|
5558 wus & E1000_WUS_MAG ? "Magic Packet" : |
|
5559 wus & E1000_WUS_LNKC ? "Link Status Change" : |
|
5560 "other"); |
|
5561 } |
|
5562 ew32(WUS, ~0); |
|
5563 } |
|
5564 |
|
5565 e1000e_reset(adapter); |
|
5566 |
|
5567 e1000_init_manageability_pt(adapter); |
|
5568 |
|
5569 if (netif_running(netdev)) |
|
5570 e1000e_up(adapter); |
|
5571 |
|
5572 netif_device_attach(netdev); |
|
5573 |
|
5574 /* |
|
5575 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5576 * is up. For all other cases, let the f/w know that the h/w is now |
|
5577 * under the control of the driver. |
|
5578 */ |
|
5579 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5580 e1000e_get_hw_control(adapter); |
|
5581 |
|
5582 return 0; |
|
5583 } |
|
5584 |
|
5585 #ifdef CONFIG_PM_SLEEP |
|
5586 static int e1000_suspend(struct device *dev) |
|
5587 { |
|
5588 struct pci_dev *pdev = to_pci_dev(dev); |
|
5589 int retval; |
|
5590 bool wake; |
|
5591 |
|
5592 retval = __e1000_shutdown(pdev, &wake, false); |
|
5593 if (!retval) |
|
5594 e1000_complete_shutdown(pdev, true, wake); |
|
5595 |
|
5596 return retval; |
|
5597 } |
|
5598 |
|
5599 static int e1000_resume(struct device *dev) |
|
5600 { |
|
5601 struct pci_dev *pdev = to_pci_dev(dev); |
|
5602 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5603 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5604 |
|
5605 if (e1000e_pm_ready(adapter)) |
|
5606 adapter->idle_check = true; |
|
5607 |
|
5608 return __e1000_resume(pdev); |
|
5609 } |
|
5610 #endif /* CONFIG_PM_SLEEP */ |
|
5611 |
|
5612 #ifdef CONFIG_PM_RUNTIME |
|
5613 static int e1000_runtime_suspend(struct device *dev) |
|
5614 { |
|
5615 struct pci_dev *pdev = to_pci_dev(dev); |
|
5616 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5617 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5618 |
|
5619 if (e1000e_pm_ready(adapter)) { |
|
5620 bool wake; |
|
5621 |
|
5622 __e1000_shutdown(pdev, &wake, true); |
|
5623 } |
|
5624 |
|
5625 return 0; |
|
5626 } |
|
5627 |
|
5628 static int e1000_idle(struct device *dev) |
|
5629 { |
|
5630 struct pci_dev *pdev = to_pci_dev(dev); |
|
5631 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5632 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5633 |
|
5634 if (!e1000e_pm_ready(adapter)) |
|
5635 return 0; |
|
5636 |
|
5637 if (adapter->idle_check) { |
|
5638 adapter->idle_check = false; |
|
5639 if (!e1000e_has_link(adapter)) |
|
5640 pm_schedule_suspend(dev, MSEC_PER_SEC); |
|
5641 } |
|
5642 |
|
5643 return -EBUSY; |
|
5644 } |
|
5645 |
|
5646 static int e1000_runtime_resume(struct device *dev) |
|
5647 { |
|
5648 struct pci_dev *pdev = to_pci_dev(dev); |
|
5649 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5650 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5651 |
|
5652 if (!e1000e_pm_ready(adapter)) |
|
5653 return 0; |
|
5654 |
|
5655 adapter->idle_check = !dev->power.runtime_auto; |
|
5656 return __e1000_resume(pdev); |
|
5657 } |
|
5658 #endif /* CONFIG_PM_RUNTIME */ |
|
5659 #endif /* CONFIG_PM */ |
|
5660 |
|
5661 static void e1000_shutdown(struct pci_dev *pdev) |
|
5662 { |
|
5663 bool wake = false; |
|
5664 |
|
5665 __e1000_shutdown(pdev, &wake, false); |
|
5666 |
|
5667 if (system_state == SYSTEM_POWER_OFF) |
|
5668 e1000_complete_shutdown(pdev, false, wake); |
|
5669 } |
|
5670 |
|
5671 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5672 |
|
5673 static irqreturn_t e1000_intr_msix(int irq, void *data) |
|
5674 { |
|
5675 struct net_device *netdev = data; |
|
5676 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5677 |
|
5678 if (adapter->msix_entries) { |
|
5679 int vector, msix_irq; |
|
5680 |
|
5681 vector = 0; |
|
5682 msix_irq = adapter->msix_entries[vector].vector; |
|
5683 disable_irq(msix_irq); |
|
5684 e1000_intr_msix_rx(msix_irq, netdev); |
|
5685 enable_irq(msix_irq); |
|
5686 |
|
5687 vector++; |
|
5688 msix_irq = adapter->msix_entries[vector].vector; |
|
5689 disable_irq(msix_irq); |
|
5690 e1000_intr_msix_tx(msix_irq, netdev); |
|
5691 enable_irq(msix_irq); |
|
5692 |
|
5693 vector++; |
|
5694 msix_irq = adapter->msix_entries[vector].vector; |
|
5695 disable_irq(msix_irq); |
|
5696 e1000_msix_other(msix_irq, netdev); |
|
5697 enable_irq(msix_irq); |
|
5698 } |
|
5699 |
|
5700 return IRQ_HANDLED; |
|
5701 } |
|
5702 |
|
5703 /* |
|
5704 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
5705 * without having to re-enable interrupts. It's not called while |
|
5706 * the interrupt routine is executing. |
|
5707 */ |
|
5708 static void e1000_netpoll(struct net_device *netdev) |
|
5709 { |
|
5710 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5711 |
|
5712 switch (adapter->int_mode) { |
|
5713 case E1000E_INT_MODE_MSIX: |
|
5714 e1000_intr_msix(adapter->pdev->irq, netdev); |
|
5715 break; |
|
5716 case E1000E_INT_MODE_MSI: |
|
5717 disable_irq(adapter->pdev->irq); |
|
5718 e1000_intr_msi(adapter->pdev->irq, netdev); |
|
5719 enable_irq(adapter->pdev->irq); |
|
5720 break; |
|
5721 default: /* E1000E_INT_MODE_LEGACY */ |
|
5722 disable_irq(adapter->pdev->irq); |
|
5723 e1000_intr(adapter->pdev->irq, netdev); |
|
5724 enable_irq(adapter->pdev->irq); |
|
5725 break; |
|
5726 } |
|
5727 } |
|
5728 #endif |
|
5729 |
|
5730 /** |
|
5731 * e1000_io_error_detected - called when PCI error is detected |
|
5732 * @pdev: Pointer to PCI device |
|
5733 * @state: The current pci connection state |
|
5734 * |
|
5735 * This function is called after a PCI bus error affecting |
|
5736 * this device has been detected. |
|
5737 */ |
|
5738 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
5739 pci_channel_state_t state) |
|
5740 { |
|
5741 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5742 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5743 |
|
5744 netif_device_detach(netdev); |
|
5745 |
|
5746 if (state == pci_channel_io_perm_failure) |
|
5747 return PCI_ERS_RESULT_DISCONNECT; |
|
5748 |
|
5749 if (netif_running(netdev)) |
|
5750 e1000e_down(adapter); |
|
5751 pci_disable_device(pdev); |
|
5752 |
|
5753 /* Request a slot slot reset. */ |
|
5754 return PCI_ERS_RESULT_NEED_RESET; |
|
5755 } |
|
5756 |
|
5757 /** |
|
5758 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
5759 * @pdev: Pointer to PCI device |
|
5760 * |
|
5761 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
5762 * resembles the first-half of the e1000_resume routine. |
|
5763 */ |
|
5764 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
5765 { |
|
5766 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5767 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5768 struct e1000_hw *hw = &adapter->hw; |
|
5769 u16 aspm_disable_flag = 0; |
|
5770 int err; |
|
5771 pci_ers_result_t result; |
|
5772 |
|
5773 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
5774 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
5775 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5776 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
5777 if (aspm_disable_flag) |
|
5778 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
5779 |
|
5780 err = pci_enable_device_mem(pdev); |
|
5781 if (err) { |
|
5782 dev_err(&pdev->dev, |
|
5783 "Cannot re-enable PCI device after reset.\n"); |
|
5784 result = PCI_ERS_RESULT_DISCONNECT; |
|
5785 } else { |
|
5786 pci_set_master(pdev); |
|
5787 pdev->state_saved = true; |
|
5788 pci_restore_state(pdev); |
|
5789 |
|
5790 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5791 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5792 |
|
5793 e1000e_reset(adapter); |
|
5794 ew32(WUS, ~0); |
|
5795 result = PCI_ERS_RESULT_RECOVERED; |
|
5796 } |
|
5797 |
|
5798 pci_cleanup_aer_uncorrect_error_status(pdev); |
|
5799 |
|
5800 return result; |
|
5801 } |
|
5802 |
|
5803 /** |
|
5804 * e1000_io_resume - called when traffic can start flowing again. |
|
5805 * @pdev: Pointer to PCI device |
|
5806 * |
|
5807 * This callback is called when the error recovery driver tells us that |
|
5808 * its OK to resume normal operation. Implementation resembles the |
|
5809 * second-half of the e1000_resume routine. |
|
5810 */ |
|
5811 static void e1000_io_resume(struct pci_dev *pdev) |
|
5812 { |
|
5813 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5814 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5815 |
|
5816 e1000_init_manageability_pt(adapter); |
|
5817 |
|
5818 if (netif_running(netdev)) { |
|
5819 if (e1000e_up(adapter)) { |
|
5820 dev_err(&pdev->dev, |
|
5821 "can't bring device back up after reset\n"); |
|
5822 return; |
|
5823 } |
|
5824 } |
|
5825 |
|
5826 netif_device_attach(netdev); |
|
5827 |
|
5828 /* |
|
5829 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
5830 * is up. For all other cases, let the f/w know that the h/w is now |
|
5831 * under the control of the driver. |
|
5832 */ |
|
5833 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
5834 e1000e_get_hw_control(adapter); |
|
5835 |
|
5836 } |
|
5837 |
|
5838 static void e1000_print_device_info(struct e1000_adapter *adapter) |
|
5839 { |
|
5840 struct e1000_hw *hw = &adapter->hw; |
|
5841 struct net_device *netdev = adapter->netdev; |
|
5842 u32 ret_val; |
|
5843 u8 pba_str[E1000_PBANUM_LENGTH]; |
|
5844 |
|
5845 /* print bus type/speed/width info */ |
|
5846 e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
|
5847 /* bus width */ |
|
5848 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
|
5849 "Width x1"), |
|
5850 /* MAC address */ |
|
5851 netdev->dev_addr); |
|
5852 e_info("Intel(R) PRO/%s Network Connection\n", |
|
5853 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); |
|
5854 ret_val = e1000_read_pba_string_generic(hw, pba_str, |
|
5855 E1000_PBANUM_LENGTH); |
|
5856 if (ret_val) |
|
5857 strncpy((char *)pba_str, "Unknown", sizeof(pba_str) - 1); |
|
5858 e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
|
5859 hw->mac.type, hw->phy.type, pba_str); |
|
5860 } |
|
5861 |
|
5862 static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
|
5863 { |
|
5864 struct e1000_hw *hw = &adapter->hw; |
|
5865 int ret_val; |
|
5866 u16 buf = 0; |
|
5867 |
|
5868 if (hw->mac.type != e1000_82573) |
|
5869 return; |
|
5870 |
|
5871 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); |
|
5872 if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) { |
|
5873 /* Deep Smart Power Down (DSPD) */ |
|
5874 dev_warn(&adapter->pdev->dev, |
|
5875 "Warning: detected DSPD enabled in EEPROM\n"); |
|
5876 } |
|
5877 } |
|
5878 |
|
5879 static int e1000_set_features(struct net_device *netdev, u32 features) |
|
5880 { |
|
5881 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5882 u32 changed = features ^ netdev->features; |
|
5883 |
|
5884 if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) |
|
5885 adapter->flags |= FLAG_TSO_FORCE; |
|
5886 |
|
5887 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | |
|
5888 NETIF_F_RXCSUM))) |
|
5889 return 0; |
|
5890 |
|
5891 if (netif_running(netdev)) |
|
5892 e1000e_reinit_locked(adapter); |
|
5893 else |
|
5894 e1000e_reset(adapter); |
|
5895 |
|
5896 return 0; |
|
5897 } |
|
5898 |
|
5899 static const struct net_device_ops e1000e_netdev_ops = { |
|
5900 .ndo_open = e1000_open, |
|
5901 .ndo_stop = e1000_close, |
|
5902 .ndo_start_xmit = e1000_xmit_frame, |
|
5903 .ndo_get_stats64 = e1000e_get_stats64, |
|
5904 .ndo_set_rx_mode = e1000_set_multi, |
|
5905 .ndo_set_mac_address = e1000_set_mac, |
|
5906 .ndo_change_mtu = e1000_change_mtu, |
|
5907 .ndo_do_ioctl = e1000_ioctl, |
|
5908 .ndo_tx_timeout = e1000_tx_timeout, |
|
5909 .ndo_validate_addr = eth_validate_addr, |
|
5910 |
|
5911 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
5912 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
5913 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5914 .ndo_poll_controller = e1000_netpoll, |
|
5915 #endif |
|
5916 .ndo_set_features = e1000_set_features, |
|
5917 }; |
|
5918 |
|
5919 /** |
|
5920 * e1000_probe - Device Initialization Routine |
|
5921 * @pdev: PCI device information struct |
|
5922 * @ent: entry in e1000_pci_tbl |
|
5923 * |
|
5924 * Returns 0 on success, negative on failure |
|
5925 * |
|
5926 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
5927 * The OS initialization, configuring of the adapter private structure, |
|
5928 * and a hardware reset occur. |
|
5929 **/ |
|
5930 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
5931 const struct pci_device_id *ent) |
|
5932 { |
|
5933 struct net_device *netdev; |
|
5934 struct e1000_adapter *adapter; |
|
5935 struct e1000_hw *hw; |
|
5936 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; |
|
5937 resource_size_t mmio_start, mmio_len; |
|
5938 resource_size_t flash_start, flash_len; |
|
5939 |
|
5940 static int cards_found; |
|
5941 u16 aspm_disable_flag = 0; |
|
5942 int i, err, pci_using_dac; |
|
5943 u16 eeprom_data = 0; |
|
5944 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
5945 |
|
5946 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
5947 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
5948 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
5949 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
5950 if (aspm_disable_flag) |
|
5951 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
5952 |
|
5953 err = pci_enable_device_mem(pdev); |
|
5954 if (err) |
|
5955 return err; |
|
5956 |
|
5957 pci_using_dac = 0; |
|
5958 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
5959 if (!err) { |
|
5960 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
5961 if (!err) |
|
5962 pci_using_dac = 1; |
|
5963 } else { |
|
5964 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
5965 if (err) { |
|
5966 err = dma_set_coherent_mask(&pdev->dev, |
|
5967 DMA_BIT_MASK(32)); |
|
5968 if (err) { |
|
5969 dev_err(&pdev->dev, "No usable DMA " |
|
5970 "configuration, aborting\n"); |
|
5971 goto err_dma; |
|
5972 } |
|
5973 } |
|
5974 } |
|
5975 |
|
5976 err = pci_request_selected_regions_exclusive(pdev, |
|
5977 pci_select_bars(pdev, IORESOURCE_MEM), |
|
5978 e1000e_driver_name); |
|
5979 if (err) |
|
5980 goto err_pci_reg; |
|
5981 |
|
5982 /* AER (Advanced Error Reporting) hooks */ |
|
5983 pci_enable_pcie_error_reporting(pdev); |
|
5984 |
|
5985 pci_set_master(pdev); |
|
5986 /* PCI config space info */ |
|
5987 err = pci_save_state(pdev); |
|
5988 if (err) |
|
5989 goto err_alloc_etherdev; |
|
5990 |
|
5991 err = -ENOMEM; |
|
5992 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
5993 if (!netdev) |
|
5994 goto err_alloc_etherdev; |
|
5995 |
|
5996 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
5997 |
|
5998 netdev->irq = pdev->irq; |
|
5999 |
|
6000 pci_set_drvdata(pdev, netdev); |
|
6001 adapter = netdev_priv(netdev); |
|
6002 hw = &adapter->hw; |
|
6003 adapter->netdev = netdev; |
|
6004 adapter->pdev = pdev; |
|
6005 adapter->ei = ei; |
|
6006 adapter->pba = ei->pba; |
|
6007 adapter->flags = ei->flags; |
|
6008 adapter->flags2 = ei->flags2; |
|
6009 adapter->hw.adapter = adapter; |
|
6010 adapter->hw.mac.type = ei->mac; |
|
6011 adapter->max_hw_frame_size = ei->max_hw_frame_size; |
|
6012 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; |
|
6013 |
|
6014 mmio_start = pci_resource_start(pdev, 0); |
|
6015 mmio_len = pci_resource_len(pdev, 0); |
|
6016 |
|
6017 err = -EIO; |
|
6018 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
6019 if (!adapter->hw.hw_addr) |
|
6020 goto err_ioremap; |
|
6021 |
|
6022 if ((adapter->flags & FLAG_HAS_FLASH) && |
|
6023 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
6024 flash_start = pci_resource_start(pdev, 1); |
|
6025 flash_len = pci_resource_len(pdev, 1); |
|
6026 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
6027 if (!adapter->hw.flash_address) |
|
6028 goto err_flashmap; |
|
6029 } |
|
6030 |
|
6031 /* construct the net_device struct */ |
|
6032 netdev->netdev_ops = &e1000e_netdev_ops; |
|
6033 e1000e_set_ethtool_ops(netdev); |
|
6034 netdev->watchdog_timeo = 5 * HZ; |
|
6035 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
6036 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
6037 |
|
6038 netdev->mem_start = mmio_start; |
|
6039 netdev->mem_end = mmio_start + mmio_len; |
|
6040 |
|
6041 adapter->bd_number = cards_found++; |
|
6042 |
|
6043 e1000e_check_options(adapter); |
|
6044 |
|
6045 /* setup adapter struct */ |
|
6046 err = e1000_sw_init(adapter); |
|
6047 if (err) |
|
6048 goto err_sw_init; |
|
6049 |
|
6050 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
|
6051 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
|
6052 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
|
6053 |
|
6054 err = ei->get_variants(adapter); |
|
6055 if (err) |
|
6056 goto err_hw_init; |
|
6057 |
|
6058 if ((adapter->flags & FLAG_IS_ICH) && |
|
6059 (adapter->flags & FLAG_READ_ONLY_NVM)) |
|
6060 e1000e_write_protect_nvm_ich8lan(&adapter->hw); |
|
6061 |
|
6062 hw->mac.ops.get_bus_info(&adapter->hw); |
|
6063 |
|
6064 adapter->hw.phy.autoneg_wait_to_complete = 0; |
|
6065 |
|
6066 /* Copper options */ |
|
6067 if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
|
6068 adapter->hw.phy.mdix = AUTO_ALL_MODES; |
|
6069 adapter->hw.phy.disable_polarity_correction = 0; |
|
6070 adapter->hw.phy.ms_type = e1000_ms_hw_default; |
|
6071 } |
|
6072 |
|
6073 if (e1000_check_reset_block(&adapter->hw)) |
|
6074 e_info("PHY reset is blocked due to SOL/IDER session.\n"); |
|
6075 |
|
6076 /* Set initial default active device features */ |
|
6077 netdev->features = (NETIF_F_SG | |
|
6078 NETIF_F_HW_VLAN_RX | |
|
6079 NETIF_F_HW_VLAN_TX | |
|
6080 NETIF_F_TSO | |
|
6081 NETIF_F_TSO6 | |
|
6082 NETIF_F_RXCSUM | |
|
6083 NETIF_F_HW_CSUM); |
|
6084 |
|
6085 /* Set user-changeable features (subset of all device features) */ |
|
6086 netdev->hw_features = netdev->features; |
|
6087 |
|
6088 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
6089 netdev->features |= NETIF_F_HW_VLAN_FILTER; |
|
6090 |
|
6091 netdev->vlan_features |= (NETIF_F_SG | |
|
6092 NETIF_F_TSO | |
|
6093 NETIF_F_TSO6 | |
|
6094 NETIF_F_HW_CSUM); |
|
6095 |
|
6096 if (pci_using_dac) { |
|
6097 netdev->features |= NETIF_F_HIGHDMA; |
|
6098 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
6099 } |
|
6100 |
|
6101 if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
|
6102 adapter->flags |= FLAG_MNG_PT_ENABLED; |
|
6103 |
|
6104 /* |
|
6105 * before reading the NVM, reset the controller to |
|
6106 * put the device in a known good starting state |
|
6107 */ |
|
6108 adapter->hw.mac.ops.reset_hw(&adapter->hw); |
|
6109 |
|
6110 /* |
|
6111 * systems with ASPM and others may see the checksum fail on the first |
|
6112 * attempt. Let's give it a few tries |
|
6113 */ |
|
6114 for (i = 0;; i++) { |
|
6115 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) |
|
6116 break; |
|
6117 if (i == 2) { |
|
6118 e_err("The NVM Checksum Is Not Valid\n"); |
|
6119 err = -EIO; |
|
6120 goto err_eeprom; |
|
6121 } |
|
6122 } |
|
6123 |
|
6124 e1000_eeprom_checks(adapter); |
|
6125 |
|
6126 /* copy the MAC address */ |
|
6127 if (e1000e_read_mac_addr(&adapter->hw)) |
|
6128 e_err("NVM Read Error while reading MAC address\n"); |
|
6129 |
|
6130 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6131 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6132 |
|
6133 if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
6134 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr); |
|
6135 err = -EIO; |
|
6136 goto err_eeprom; |
|
6137 } |
|
6138 |
|
6139 init_timer(&adapter->watchdog_timer); |
|
6140 adapter->watchdog_timer.function = e1000_watchdog; |
|
6141 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
6142 |
|
6143 init_timer(&adapter->phy_info_timer); |
|
6144 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
6145 adapter->phy_info_timer.data = (unsigned long) adapter; |
|
6146 |
|
6147 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
6148 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); |
|
6149 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
|
6150 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); |
|
6151 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
|
6152 |
|
6153 /* Initialize link parameters. User can change them with ethtool */ |
|
6154 adapter->hw.mac.autoneg = 1; |
|
6155 adapter->fc_autoneg = 1; |
|
6156 adapter->hw.fc.requested_mode = e1000_fc_default; |
|
6157 adapter->hw.fc.current_mode = e1000_fc_default; |
|
6158 adapter->hw.phy.autoneg_advertised = 0x2f; |
|
6159 |
|
6160 /* ring size defaults */ |
|
6161 adapter->rx_ring->count = 256; |
|
6162 adapter->tx_ring->count = 256; |
|
6163 |
|
6164 /* |
|
6165 * Initial Wake on LAN setting - If APM wake is enabled in |
|
6166 * the EEPROM, enable the ACPI Magic Packet filter |
|
6167 */ |
|
6168 if (adapter->flags & FLAG_APME_IN_WUC) { |
|
6169 /* APME bit in EEPROM is mapped to WUC.APME */ |
|
6170 eeprom_data = er32(WUC); |
|
6171 eeprom_apme_mask = E1000_WUC_APME; |
|
6172 if ((hw->mac.type > e1000_ich10lan) && |
|
6173 (eeprom_data & E1000_WUC_PHY_WAKE)) |
|
6174 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
|
6175 } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
|
6176 if (adapter->flags & FLAG_APME_CHECK_PORT_B && |
|
6177 (adapter->hw.bus.func == 1)) |
|
6178 e1000_read_nvm(&adapter->hw, |
|
6179 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
6180 else |
|
6181 e1000_read_nvm(&adapter->hw, |
|
6182 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
6183 } |
|
6184 |
|
6185 /* fetch WoL from EEPROM */ |
|
6186 if (eeprom_data & eeprom_apme_mask) |
|
6187 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
6188 |
|
6189 /* |
|
6190 * now that we have the eeprom settings, apply the special cases |
|
6191 * where the eeprom may be wrong or the board simply won't support |
|
6192 * wake on lan on a particular port |
|
6193 */ |
|
6194 if (!(adapter->flags & FLAG_HAS_WOL)) |
|
6195 adapter->eeprom_wol = 0; |
|
6196 |
|
6197 /* initialize the wol settings based on the eeprom settings */ |
|
6198 adapter->wol = adapter->eeprom_wol; |
|
6199 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
6200 |
|
6201 /* save off EEPROM version number */ |
|
6202 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
|
6203 |
|
6204 /* reset the hardware with the new settings */ |
|
6205 e1000e_reset(adapter); |
|
6206 |
|
6207 /* |
|
6208 * If the controller has AMT, do not set DRV_LOAD until the interface |
|
6209 * is up. For all other cases, let the f/w know that the h/w is now |
|
6210 * under the control of the driver. |
|
6211 */ |
|
6212 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6213 e1000e_get_hw_control(adapter); |
|
6214 |
|
6215 strncpy(netdev->name, "eth%d", sizeof(netdev->name) - 1); |
|
6216 err = register_netdev(netdev); |
|
6217 if (err) |
|
6218 goto err_register; |
|
6219 |
|
6220 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
6221 netif_carrier_off(netdev); |
|
6222 |
|
6223 e1000_print_device_info(adapter); |
|
6224 |
|
6225 if (pci_dev_run_wake(pdev)) |
|
6226 pm_runtime_put_noidle(&pdev->dev); |
|
6227 |
|
6228 return 0; |
|
6229 |
|
6230 err_register: |
|
6231 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6232 e1000e_release_hw_control(adapter); |
|
6233 err_eeprom: |
|
6234 if (!e1000_check_reset_block(&adapter->hw)) |
|
6235 e1000_phy_hw_reset(&adapter->hw); |
|
6236 err_hw_init: |
|
6237 kfree(adapter->tx_ring); |
|
6238 kfree(adapter->rx_ring); |
|
6239 err_sw_init: |
|
6240 if (adapter->hw.flash_address) |
|
6241 iounmap(adapter->hw.flash_address); |
|
6242 e1000e_reset_interrupt_capability(adapter); |
|
6243 err_flashmap: |
|
6244 iounmap(adapter->hw.hw_addr); |
|
6245 err_ioremap: |
|
6246 free_netdev(netdev); |
|
6247 err_alloc_etherdev: |
|
6248 pci_release_selected_regions(pdev, |
|
6249 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6250 err_pci_reg: |
|
6251 err_dma: |
|
6252 pci_disable_device(pdev); |
|
6253 return err; |
|
6254 } |
|
6255 |
|
6256 /** |
|
6257 * e1000_remove - Device Removal Routine |
|
6258 * @pdev: PCI device information struct |
|
6259 * |
|
6260 * e1000_remove is called by the PCI subsystem to alert the driver |
|
6261 * that it should release a PCI device. The could be caused by a |
|
6262 * Hot-Plug event, or because the driver is going to be removed from |
|
6263 * memory. |
|
6264 **/ |
|
6265 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
6266 { |
|
6267 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6268 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6269 bool down = test_bit(__E1000_DOWN, &adapter->state); |
|
6270 |
|
6271 /* |
|
6272 * The timers may be rescheduled, so explicitly disable them |
|
6273 * from being rescheduled. |
|
6274 */ |
|
6275 if (!down) |
|
6276 set_bit(__E1000_DOWN, &adapter->state); |
|
6277 del_timer_sync(&adapter->watchdog_timer); |
|
6278 del_timer_sync(&adapter->phy_info_timer); |
|
6279 |
|
6280 cancel_work_sync(&adapter->reset_task); |
|
6281 cancel_work_sync(&adapter->watchdog_task); |
|
6282 cancel_work_sync(&adapter->downshift_task); |
|
6283 cancel_work_sync(&adapter->update_phy_task); |
|
6284 cancel_work_sync(&adapter->print_hang_task); |
|
6285 |
|
6286 if (!(netdev->flags & IFF_UP)) |
|
6287 e1000_power_down_phy(adapter); |
|
6288 |
|
6289 /* Don't lie to e1000_close() down the road. */ |
|
6290 if (!down) |
|
6291 clear_bit(__E1000_DOWN, &adapter->state); |
|
6292 unregister_netdev(netdev); |
|
6293 |
|
6294 if (pci_dev_run_wake(pdev)) |
|
6295 pm_runtime_get_noresume(&pdev->dev); |
|
6296 |
|
6297 /* |
|
6298 * Release control of h/w to f/w. If f/w is AMT enabled, this |
|
6299 * would have already happened in close and is redundant. |
|
6300 */ |
|
6301 e1000e_release_hw_control(adapter); |
|
6302 |
|
6303 e1000e_reset_interrupt_capability(adapter); |
|
6304 kfree(adapter->tx_ring); |
|
6305 kfree(adapter->rx_ring); |
|
6306 |
|
6307 iounmap(adapter->hw.hw_addr); |
|
6308 if (adapter->hw.flash_address) |
|
6309 iounmap(adapter->hw.flash_address); |
|
6310 pci_release_selected_regions(pdev, |
|
6311 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
6312 |
|
6313 free_netdev(netdev); |
|
6314 |
|
6315 /* AER disable */ |
|
6316 pci_disable_pcie_error_reporting(pdev); |
|
6317 |
|
6318 pci_disable_device(pdev); |
|
6319 } |
|
6320 |
|
6321 /* PCI Error Recovery (ERS) */ |
|
6322 static struct pci_error_handlers e1000_err_handler = { |
|
6323 .error_detected = e1000_io_error_detected, |
|
6324 .slot_reset = e1000_io_slot_reset, |
|
6325 .resume = e1000_io_resume, |
|
6326 }; |
|
6327 |
|
6328 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
|
6329 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
|
6330 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, |
|
6331 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, |
|
6332 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, |
|
6333 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
|
6334 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, |
|
6335 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
|
6336 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, |
|
6337 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, |
|
6338 |
|
6339 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
|
6340 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, |
|
6341 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, |
|
6342 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, |
|
6343 |
|
6344 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
|
6345 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, |
|
6346 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, |
|
6347 |
|
6348 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
|
6349 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
|
6350 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
|
6351 |
|
6352 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
|
6353 board_80003es2lan }, |
|
6354 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), |
|
6355 board_80003es2lan }, |
|
6356 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), |
|
6357 board_80003es2lan }, |
|
6358 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), |
|
6359 board_80003es2lan }, |
|
6360 |
|
6361 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
|
6362 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, |
|
6363 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, |
|
6364 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, |
|
6365 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, |
|
6366 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, |
|
6367 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, |
|
6368 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
|
6369 |
|
6370 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
|
6371 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, |
|
6372 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, |
|
6373 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, |
|
6374 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, |
|
6375 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
|
6376 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
|
6377 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, |
|
6378 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, |
|
6379 |
|
6380 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, |
|
6381 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, |
|
6382 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, |
|
6383 |
|
6384 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
|
6385 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, |
|
6386 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
|
6387 |
|
6388 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
|
6389 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, |
|
6390 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, |
|
6391 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, |
|
6392 |
|
6393 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
|
6394 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, |
|
6395 |
|
6396 { } /* terminate list */ |
|
6397 }; |
|
6398 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
|
6399 |
|
6400 #ifdef CONFIG_PM |
|
6401 static const struct dev_pm_ops e1000_pm_ops = { |
|
6402 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume) |
|
6403 SET_RUNTIME_PM_OPS(e1000_runtime_suspend, |
|
6404 e1000_runtime_resume, e1000_idle) |
|
6405 }; |
|
6406 #endif |
|
6407 |
|
6408 /* PCI Device API Driver */ |
|
6409 static struct pci_driver e1000_driver = { |
|
6410 .name = e1000e_driver_name, |
|
6411 .id_table = e1000_pci_tbl, |
|
6412 .probe = e1000_probe, |
|
6413 .remove = __devexit_p(e1000_remove), |
|
6414 #ifdef CONFIG_PM |
|
6415 .driver.pm = &e1000_pm_ops, |
|
6416 #endif |
|
6417 .shutdown = e1000_shutdown, |
|
6418 .err_handler = &e1000_err_handler |
|
6419 }; |
|
6420 |
|
6421 /** |
|
6422 * e1000_init_module - Driver Registration Routine |
|
6423 * |
|
6424 * e1000_init_module is the first routine called when the driver is |
|
6425 * loaded. All it does is register with the PCI subsystem. |
|
6426 **/ |
|
6427 static int __init e1000_init_module(void) |
|
6428 { |
|
6429 int ret; |
|
6430 pr_info("Intel(R) PRO/1000 Network Driver - %s\n", |
|
6431 e1000e_driver_version); |
|
6432 pr_info("Copyright(c) 1999 - 2011 Intel Corporation.\n"); |
|
6433 ret = pci_register_driver(&e1000_driver); |
|
6434 |
|
6435 return ret; |
|
6436 } |
|
6437 module_init(e1000_init_module); |
|
6438 |
|
6439 /** |
|
6440 * e1000_exit_module - Driver Exit Cleanup Routine |
|
6441 * |
|
6442 * e1000_exit_module is called just before the driver is removed |
|
6443 * from memory. |
|
6444 **/ |
|
6445 static void __exit e1000_exit_module(void) |
|
6446 { |
|
6447 pci_unregister_driver(&e1000_driver); |
|
6448 } |
|
6449 module_exit(e1000_exit_module); |
|
6450 |
|
6451 |
|
6452 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
|
6453 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); |
|
6454 MODULE_LICENSE("GPL"); |
|
6455 MODULE_VERSION(DRV_VERSION); |
|
6456 |
|
6457 /* e1000_main.c */ |