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1 /* Intel PRO/1000 Linux driver |
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2 * Copyright(c) 1999 - 2014 Intel Corporation. |
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3 * |
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4 * This program is free software; you can redistribute it and/or modify it |
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5 * under the terms and conditions of the GNU General Public License, |
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6 * version 2, as published by the Free Software Foundation. |
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7 * |
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8 * This program is distributed in the hope it will be useful, but WITHOUT |
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9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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11 * more details. |
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12 * |
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13 * The full GNU General Public License is included in this distribution in |
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14 * the file called "COPYING". |
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15 * |
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16 * Contact Information: |
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17 * Linux NICS <linux.nics@intel.com> |
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18 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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19 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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20 */ |
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21 |
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22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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23 |
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24 #include <linux/module.h> |
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25 #include <linux/types.h> |
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26 #include <linux/init.h> |
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27 #include <linux/pci.h> |
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28 #include <linux/vmalloc.h> |
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29 #include <linux/pagemap.h> |
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30 #include <linux/delay.h> |
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31 #include <linux/netdevice.h> |
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32 #include <linux/interrupt.h> |
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33 #include <linux/tcp.h> |
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34 #include <linux/ipv6.h> |
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35 #include <linux/slab.h> |
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36 #include <net/checksum.h> |
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37 #include <net/ip6_checksum.h> |
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38 #include <linux/ethtool.h> |
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39 #include <linux/if_vlan.h> |
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40 #include <linux/cpu.h> |
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41 #include <linux/smp.h> |
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42 #include <linux/pm_qos.h> |
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43 #include <linux/pm_runtime.h> |
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44 #include <linux/aer.h> |
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45 #include <linux/prefetch.h> |
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46 |
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47 #include "e1000.h" |
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48 |
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49 #define DRV_EXTRAVERSION "-k" |
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50 |
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51 #define DRV_VERSION "2.3.2" DRV_EXTRAVERSION |
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52 char e1000e_driver_name[] = "e1000e"; |
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53 const char e1000e_driver_version[] = DRV_VERSION; |
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54 |
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55 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
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56 static int debug = -1; |
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57 module_param(debug, int, 0); |
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58 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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59 |
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60 static const struct e1000_info *e1000_info_tbl[] = { |
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61 [board_82571] = &e1000_82571_info, |
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62 [board_82572] = &e1000_82572_info, |
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63 [board_82573] = &e1000_82573_info, |
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64 [board_82574] = &e1000_82574_info, |
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65 [board_82583] = &e1000_82583_info, |
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66 [board_80003es2lan] = &e1000_es2_info, |
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67 [board_ich8lan] = &e1000_ich8_info, |
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68 [board_ich9lan] = &e1000_ich9_info, |
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69 [board_ich10lan] = &e1000_ich10_info, |
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70 [board_pchlan] = &e1000_pch_info, |
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71 [board_pch2lan] = &e1000_pch2_info, |
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72 [board_pch_lpt] = &e1000_pch_lpt_info, |
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73 }; |
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74 |
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75 struct e1000_reg_info { |
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76 u32 ofs; |
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77 char *name; |
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78 }; |
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79 |
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80 static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
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81 /* General Registers */ |
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82 {E1000_CTRL, "CTRL"}, |
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83 {E1000_STATUS, "STATUS"}, |
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84 {E1000_CTRL_EXT, "CTRL_EXT"}, |
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85 |
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86 /* Interrupt Registers */ |
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87 {E1000_ICR, "ICR"}, |
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88 |
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89 /* Rx Registers */ |
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90 {E1000_RCTL, "RCTL"}, |
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91 {E1000_RDLEN(0), "RDLEN"}, |
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92 {E1000_RDH(0), "RDH"}, |
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93 {E1000_RDT(0), "RDT"}, |
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94 {E1000_RDTR, "RDTR"}, |
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95 {E1000_RXDCTL(0), "RXDCTL"}, |
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96 {E1000_ERT, "ERT"}, |
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97 {E1000_RDBAL(0), "RDBAL"}, |
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98 {E1000_RDBAH(0), "RDBAH"}, |
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99 {E1000_RDFH, "RDFH"}, |
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100 {E1000_RDFT, "RDFT"}, |
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101 {E1000_RDFHS, "RDFHS"}, |
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102 {E1000_RDFTS, "RDFTS"}, |
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103 {E1000_RDFPC, "RDFPC"}, |
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104 |
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105 /* Tx Registers */ |
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106 {E1000_TCTL, "TCTL"}, |
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107 {E1000_TDBAL(0), "TDBAL"}, |
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108 {E1000_TDBAH(0), "TDBAH"}, |
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109 {E1000_TDLEN(0), "TDLEN"}, |
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110 {E1000_TDH(0), "TDH"}, |
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111 {E1000_TDT(0), "TDT"}, |
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112 {E1000_TIDV, "TIDV"}, |
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113 {E1000_TXDCTL(0), "TXDCTL"}, |
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114 {E1000_TADV, "TADV"}, |
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115 {E1000_TARC(0), "TARC"}, |
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116 {E1000_TDFH, "TDFH"}, |
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117 {E1000_TDFT, "TDFT"}, |
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118 {E1000_TDFHS, "TDFHS"}, |
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119 {E1000_TDFTS, "TDFTS"}, |
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120 {E1000_TDFPC, "TDFPC"}, |
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121 |
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122 /* List Terminator */ |
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123 {0, NULL} |
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124 }; |
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125 |
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126 /** |
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127 * __ew32_prepare - prepare to write to MAC CSR register on certain parts |
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128 * @hw: pointer to the HW structure |
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129 * |
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130 * When updating the MAC CSR registers, the Manageability Engine (ME) could |
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131 * be accessing the registers at the same time. Normally, this is handled in |
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132 * h/w by an arbiter but on some parts there is a bug that acknowledges Host |
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133 * accesses later than it should which could result in the register to have |
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134 * an incorrect value. Workaround this by checking the FWSM register which |
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135 * has bit 24 set while ME is accessing MAC CSR registers, wait if it is set |
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136 * and try again a number of times. |
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137 **/ |
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138 s32 __ew32_prepare(struct e1000_hw *hw) |
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139 { |
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140 s32 i = E1000_ICH_FWSM_PCIM2PCI_COUNT; |
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141 |
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142 while ((er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI) && --i) |
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143 udelay(50); |
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144 |
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145 return i; |
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146 } |
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147 |
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148 void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val) |
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149 { |
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150 if (hw->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
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151 __ew32_prepare(hw); |
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152 |
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153 writel(val, hw->hw_addr + reg); |
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154 } |
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155 |
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156 /** |
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157 * e1000_regdump - register printout routine |
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158 * @hw: pointer to the HW structure |
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159 * @reginfo: pointer to the register info table |
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160 **/ |
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161 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
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162 { |
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163 int n = 0; |
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164 char rname[16]; |
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165 u32 regs[8]; |
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166 |
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167 switch (reginfo->ofs) { |
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168 case E1000_RXDCTL(0): |
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169 for (n = 0; n < 2; n++) |
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170 regs[n] = __er32(hw, E1000_RXDCTL(n)); |
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171 break; |
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172 case E1000_TXDCTL(0): |
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173 for (n = 0; n < 2; n++) |
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174 regs[n] = __er32(hw, E1000_TXDCTL(n)); |
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175 break; |
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176 case E1000_TARC(0): |
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177 for (n = 0; n < 2; n++) |
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178 regs[n] = __er32(hw, E1000_TARC(n)); |
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179 break; |
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180 default: |
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181 pr_info("%-15s %08x\n", |
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182 reginfo->name, __er32(hw, reginfo->ofs)); |
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183 return; |
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184 } |
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185 |
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186 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); |
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187 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]); |
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188 } |
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189 |
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190 static void e1000e_dump_ps_pages(struct e1000_adapter *adapter, |
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191 struct e1000_buffer *bi) |
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192 { |
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193 int i; |
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194 struct e1000_ps_page *ps_page; |
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195 |
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196 for (i = 0; i < adapter->rx_ps_pages; i++) { |
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197 ps_page = &bi->ps_pages[i]; |
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198 |
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199 if (ps_page->page) { |
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200 pr_info("packet dump for ps_page %d:\n", i); |
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201 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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202 16, 1, page_address(ps_page->page), |
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203 PAGE_SIZE, true); |
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204 } |
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205 } |
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206 } |
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207 |
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208 /** |
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209 * e1000e_dump - Print registers, Tx-ring and Rx-ring |
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210 * @adapter: board private structure |
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211 **/ |
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212 static void e1000e_dump(struct e1000_adapter *adapter) |
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213 { |
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214 struct net_device *netdev = adapter->netdev; |
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215 struct e1000_hw *hw = &adapter->hw; |
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216 struct e1000_reg_info *reginfo; |
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217 struct e1000_ring *tx_ring = adapter->tx_ring; |
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218 struct e1000_tx_desc *tx_desc; |
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219 struct my_u0 { |
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220 __le64 a; |
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221 __le64 b; |
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222 } *u0; |
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223 struct e1000_buffer *buffer_info; |
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224 struct e1000_ring *rx_ring = adapter->rx_ring; |
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225 union e1000_rx_desc_packet_split *rx_desc_ps; |
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226 union e1000_rx_desc_extended *rx_desc; |
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227 struct my_u1 { |
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228 __le64 a; |
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229 __le64 b; |
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230 __le64 c; |
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231 __le64 d; |
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232 } *u1; |
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233 u32 staterr; |
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234 int i = 0; |
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235 |
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236 if (!netif_msg_hw(adapter)) |
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237 return; |
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238 |
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239 /* Print netdevice Info */ |
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240 if (netdev) { |
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241 dev_info(&adapter->pdev->dev, "Net device Info\n"); |
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242 pr_info("Device Name state trans_start last_rx\n"); |
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243 pr_info("%-15s %016lX %016lX %016lX\n", netdev->name, |
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244 netdev->state, netdev->trans_start, netdev->last_rx); |
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245 } |
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246 |
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247 /* Print Registers */ |
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248 dev_info(&adapter->pdev->dev, "Register Dump\n"); |
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249 pr_info(" Register Name Value\n"); |
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250 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
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251 reginfo->name; reginfo++) { |
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252 e1000_regdump(hw, reginfo); |
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253 } |
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254 |
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255 /* Print Tx Ring Summary */ |
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256 if (!netdev || !netif_running(netdev)) |
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257 return; |
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258 |
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259 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
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260 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
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261 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
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262 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", |
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263 0, tx_ring->next_to_use, tx_ring->next_to_clean, |
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264 (unsigned long long)buffer_info->dma, |
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265 buffer_info->length, |
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266 buffer_info->next_to_watch, |
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267 (unsigned long long)buffer_info->time_stamp); |
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268 |
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269 /* Print Tx Ring */ |
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270 if (!netif_msg_tx_done(adapter)) |
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271 goto rx_ring_summary; |
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272 |
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273 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
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274 |
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275 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) |
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276 * |
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277 * Legacy Transmit Descriptor |
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278 * +--------------------------------------------------------------+ |
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279 * 0 | Buffer Address [63:0] (Reserved on Write Back) | |
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280 * +--------------------------------------------------------------+ |
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281 * 8 | Special | CSS | Status | CMD | CSO | Length | |
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282 * +--------------------------------------------------------------+ |
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283 * 63 48 47 36 35 32 31 24 23 16 15 0 |
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284 * |
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285 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload |
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286 * 63 48 47 40 39 32 31 16 15 8 7 0 |
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287 * +----------------------------------------------------------------+ |
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288 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | |
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289 * +----------------------------------------------------------------+ |
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290 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | |
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291 * +----------------------------------------------------------------+ |
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292 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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293 * |
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294 * Extended Data Descriptor (DTYP=0x1) |
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295 * +----------------------------------------------------------------+ |
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296 * 0 | Buffer Address [63:0] | |
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297 * +----------------------------------------------------------------+ |
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298 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | |
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299 * +----------------------------------------------------------------+ |
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300 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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301 */ |
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302 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n"); |
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303 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n"); |
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304 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n"); |
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305 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
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306 const char *next_desc; |
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307 tx_desc = E1000_TX_DESC(*tx_ring, i); |
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308 buffer_info = &tx_ring->buffer_info[i]; |
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309 u0 = (struct my_u0 *)tx_desc; |
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310 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
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311 next_desc = " NTC/U"; |
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312 else if (i == tx_ring->next_to_use) |
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313 next_desc = " NTU"; |
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314 else if (i == tx_ring->next_to_clean) |
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315 next_desc = " NTC"; |
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316 else |
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317 next_desc = ""; |
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318 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n", |
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319 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : |
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320 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), |
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321 i, |
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322 (unsigned long long)le64_to_cpu(u0->a), |
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323 (unsigned long long)le64_to_cpu(u0->b), |
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324 (unsigned long long)buffer_info->dma, |
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325 buffer_info->length, buffer_info->next_to_watch, |
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326 (unsigned long long)buffer_info->time_stamp, |
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327 buffer_info->skb, next_desc); |
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328 |
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329 if (netif_msg_pktdata(adapter) && buffer_info->skb) |
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330 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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331 16, 1, buffer_info->skb->data, |
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332 buffer_info->skb->len, true); |
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333 } |
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334 |
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335 /* Print Rx Ring Summary */ |
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336 rx_ring_summary: |
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337 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
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338 pr_info("Queue [NTU] [NTC]\n"); |
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339 pr_info(" %5d %5X %5X\n", |
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340 0, rx_ring->next_to_use, rx_ring->next_to_clean); |
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341 |
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342 /* Print Rx Ring */ |
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343 if (!netif_msg_rx_status(adapter)) |
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344 return; |
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345 |
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346 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
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347 switch (adapter->rx_ps_pages) { |
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348 case 1: |
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349 case 2: |
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350 case 3: |
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351 /* [Extended] Packet Split Receive Descriptor Format |
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352 * |
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353 * +-----------------------------------------------------+ |
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354 * 0 | Buffer Address 0 [63:0] | |
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355 * +-----------------------------------------------------+ |
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356 * 8 | Buffer Address 1 [63:0] | |
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357 * +-----------------------------------------------------+ |
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358 * 16 | Buffer Address 2 [63:0] | |
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359 * +-----------------------------------------------------+ |
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360 * 24 | Buffer Address 3 [63:0] | |
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361 * +-----------------------------------------------------+ |
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362 */ |
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363 pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n"); |
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364 /* [Extended] Receive Descriptor (Write-Back) Format |
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365 * |
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366 * 63 48 47 32 31 13 12 8 7 4 3 0 |
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367 * +------------------------------------------------------+ |
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368 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | |
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369 * | Checksum | Ident | | Queue | | Type | |
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370 * +------------------------------------------------------+ |
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371 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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372 * +------------------------------------------------------+ |
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373 * 63 48 47 32 31 20 19 0 |
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374 */ |
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375 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n"); |
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376 for (i = 0; i < rx_ring->count; i++) { |
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377 const char *next_desc; |
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378 buffer_info = &rx_ring->buffer_info[i]; |
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379 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); |
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380 u1 = (struct my_u1 *)rx_desc_ps; |
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381 staterr = |
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382 le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
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383 |
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384 if (i == rx_ring->next_to_use) |
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385 next_desc = " NTU"; |
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386 else if (i == rx_ring->next_to_clean) |
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387 next_desc = " NTC"; |
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388 else |
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389 next_desc = ""; |
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390 |
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391 if (staterr & E1000_RXD_STAT_DD) { |
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392 /* Descriptor Done */ |
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393 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n", |
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394 "RWB", i, |
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395 (unsigned long long)le64_to_cpu(u1->a), |
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396 (unsigned long long)le64_to_cpu(u1->b), |
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397 (unsigned long long)le64_to_cpu(u1->c), |
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398 (unsigned long long)le64_to_cpu(u1->d), |
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399 buffer_info->skb, next_desc); |
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400 } else { |
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401 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n", |
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402 "R ", i, |
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403 (unsigned long long)le64_to_cpu(u1->a), |
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404 (unsigned long long)le64_to_cpu(u1->b), |
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405 (unsigned long long)le64_to_cpu(u1->c), |
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406 (unsigned long long)le64_to_cpu(u1->d), |
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407 (unsigned long long)buffer_info->dma, |
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408 buffer_info->skb, next_desc); |
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409 |
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410 if (netif_msg_pktdata(adapter)) |
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411 e1000e_dump_ps_pages(adapter, |
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412 buffer_info); |
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413 } |
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414 } |
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415 break; |
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416 default: |
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417 case 0: |
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418 /* Extended Receive Descriptor (Read) Format |
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419 * |
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420 * +-----------------------------------------------------+ |
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421 * 0 | Buffer Address [63:0] | |
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422 * +-----------------------------------------------------+ |
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423 * 8 | Reserved | |
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424 * +-----------------------------------------------------+ |
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425 */ |
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426 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n"); |
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427 /* Extended Receive Descriptor (Write-Back) Format |
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428 * |
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429 * 63 48 47 32 31 24 23 4 3 0 |
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430 * +------------------------------------------------------+ |
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431 * | RSS Hash | | | | |
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432 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | |
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433 * | Packet | IP | | | Type | |
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434 * | Checksum | Ident | | | | |
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435 * +------------------------------------------------------+ |
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436 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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437 * +------------------------------------------------------+ |
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438 * 63 48 47 32 31 20 19 0 |
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439 */ |
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440 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n"); |
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441 |
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442 for (i = 0; i < rx_ring->count; i++) { |
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443 const char *next_desc; |
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444 |
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445 buffer_info = &rx_ring->buffer_info[i]; |
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446 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
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447 u1 = (struct my_u1 *)rx_desc; |
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448 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
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449 |
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450 if (i == rx_ring->next_to_use) |
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451 next_desc = " NTU"; |
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452 else if (i == rx_ring->next_to_clean) |
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453 next_desc = " NTC"; |
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454 else |
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455 next_desc = ""; |
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456 |
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457 if (staterr & E1000_RXD_STAT_DD) { |
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458 /* Descriptor Done */ |
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459 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n", |
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460 "RWB", i, |
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461 (unsigned long long)le64_to_cpu(u1->a), |
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462 (unsigned long long)le64_to_cpu(u1->b), |
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463 buffer_info->skb, next_desc); |
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464 } else { |
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465 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n", |
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466 "R ", i, |
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467 (unsigned long long)le64_to_cpu(u1->a), |
|
468 (unsigned long long)le64_to_cpu(u1->b), |
|
469 (unsigned long long)buffer_info->dma, |
|
470 buffer_info->skb, next_desc); |
|
471 |
|
472 if (netif_msg_pktdata(adapter) && |
|
473 buffer_info->skb) |
|
474 print_hex_dump(KERN_INFO, "", |
|
475 DUMP_PREFIX_ADDRESS, 16, |
|
476 1, |
|
477 buffer_info->skb->data, |
|
478 adapter->rx_buffer_len, |
|
479 true); |
|
480 } |
|
481 } |
|
482 } |
|
483 } |
|
484 |
|
485 /** |
|
486 * e1000_desc_unused - calculate if we have unused descriptors |
|
487 **/ |
|
488 static int e1000_desc_unused(struct e1000_ring *ring) |
|
489 { |
|
490 if (ring->next_to_clean > ring->next_to_use) |
|
491 return ring->next_to_clean - ring->next_to_use - 1; |
|
492 |
|
493 return ring->count + ring->next_to_clean - ring->next_to_use - 1; |
|
494 } |
|
495 |
|
496 /** |
|
497 * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp |
|
498 * @adapter: board private structure |
|
499 * @hwtstamps: time stamp structure to update |
|
500 * @systim: unsigned 64bit system time value. |
|
501 * |
|
502 * Convert the system time value stored in the RX/TXSTMP registers into a |
|
503 * hwtstamp which can be used by the upper level time stamping functions. |
|
504 * |
|
505 * The 'systim_lock' spinlock is used to protect the consistency of the |
|
506 * system time value. This is needed because reading the 64 bit time |
|
507 * value involves reading two 32 bit registers. The first read latches the |
|
508 * value. |
|
509 **/ |
|
510 static void e1000e_systim_to_hwtstamp(struct e1000_adapter *adapter, |
|
511 struct skb_shared_hwtstamps *hwtstamps, |
|
512 u64 systim) |
|
513 { |
|
514 u64 ns; |
|
515 unsigned long flags; |
|
516 |
|
517 spin_lock_irqsave(&adapter->systim_lock, flags); |
|
518 ns = timecounter_cyc2time(&adapter->tc, systim); |
|
519 spin_unlock_irqrestore(&adapter->systim_lock, flags); |
|
520 |
|
521 memset(hwtstamps, 0, sizeof(*hwtstamps)); |
|
522 hwtstamps->hwtstamp = ns_to_ktime(ns); |
|
523 } |
|
524 |
|
525 /** |
|
526 * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp |
|
527 * @adapter: board private structure |
|
528 * @status: descriptor extended error and status field |
|
529 * @skb: particular skb to include time stamp |
|
530 * |
|
531 * If the time stamp is valid, convert it into the timecounter ns value |
|
532 * and store that result into the shhwtstamps structure which is passed |
|
533 * up the network stack. |
|
534 **/ |
|
535 static void e1000e_rx_hwtstamp(struct e1000_adapter *adapter, u32 status, |
|
536 struct sk_buff *skb) |
|
537 { |
|
538 struct e1000_hw *hw = &adapter->hw; |
|
539 u64 rxstmp; |
|
540 |
|
541 if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP) || |
|
542 !(status & E1000_RXDEXT_STATERR_TST) || |
|
543 !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) |
|
544 return; |
|
545 |
|
546 /* The Rx time stamp registers contain the time stamp. No other |
|
547 * received packet will be time stamped until the Rx time stamp |
|
548 * registers are read. Because only one packet can be time stamped |
|
549 * at a time, the register values must belong to this packet and |
|
550 * therefore none of the other additional attributes need to be |
|
551 * compared. |
|
552 */ |
|
553 rxstmp = (u64)er32(RXSTMPL); |
|
554 rxstmp |= (u64)er32(RXSTMPH) << 32; |
|
555 e1000e_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), rxstmp); |
|
556 |
|
557 adapter->flags2 &= ~FLAG2_CHECK_RX_HWTSTAMP; |
|
558 } |
|
559 |
|
560 /** |
|
561 * e1000_receive_skb - helper function to handle Rx indications |
|
562 * @adapter: board private structure |
|
563 * @staterr: descriptor extended error and status field as written by hardware |
|
564 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
565 * @skb: pointer to sk_buff to be indicated to stack |
|
566 **/ |
|
567 static void e1000_receive_skb(struct e1000_adapter *adapter, |
|
568 struct net_device *netdev, struct sk_buff *skb, |
|
569 u32 staterr, __le16 vlan) |
|
570 { |
|
571 u16 tag = le16_to_cpu(vlan); |
|
572 |
|
573 e1000e_rx_hwtstamp(adapter, staterr, skb); |
|
574 |
|
575 skb->protocol = eth_type_trans(skb, netdev); |
|
576 |
|
577 if (staterr & E1000_RXD_STAT_VP) |
|
578 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); |
|
579 |
|
580 napi_gro_receive(&adapter->napi, skb); |
|
581 } |
|
582 |
|
583 /** |
|
584 * e1000_rx_checksum - Receive Checksum Offload |
|
585 * @adapter: board private structure |
|
586 * @status_err: receive descriptor status and error fields |
|
587 * @csum: receive descriptor csum field |
|
588 * @sk_buff: socket buffer with received data |
|
589 **/ |
|
590 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
591 struct sk_buff *skb) |
|
592 { |
|
593 u16 status = (u16)status_err; |
|
594 u8 errors = (u8)(status_err >> 24); |
|
595 |
|
596 skb_checksum_none_assert(skb); |
|
597 |
|
598 /* Rx checksum disabled */ |
|
599 if (!(adapter->netdev->features & NETIF_F_RXCSUM)) |
|
600 return; |
|
601 |
|
602 /* Ignore Checksum bit is set */ |
|
603 if (status & E1000_RXD_STAT_IXSM) |
|
604 return; |
|
605 |
|
606 /* TCP/UDP checksum error bit or IP checksum error bit is set */ |
|
607 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) { |
|
608 /* let the stack verify checksum errors */ |
|
609 adapter->hw_csum_err++; |
|
610 return; |
|
611 } |
|
612 |
|
613 /* TCP/UDP Checksum has not been calculated */ |
|
614 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
615 return; |
|
616 |
|
617 /* It must be a TCP or UDP packet with a valid checksum */ |
|
618 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
619 adapter->hw_csum_good++; |
|
620 } |
|
621 |
|
622 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i) |
|
623 { |
|
624 struct e1000_adapter *adapter = rx_ring->adapter; |
|
625 struct e1000_hw *hw = &adapter->hw; |
|
626 s32 ret_val = __ew32_prepare(hw); |
|
627 |
|
628 writel(i, rx_ring->tail); |
|
629 |
|
630 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) { |
|
631 u32 rctl = er32(RCTL); |
|
632 |
|
633 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
634 e_err("ME firmware caused invalid RDT - resetting\n"); |
|
635 schedule_work(&adapter->reset_task); |
|
636 } |
|
637 } |
|
638 |
|
639 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i) |
|
640 { |
|
641 struct e1000_adapter *adapter = tx_ring->adapter; |
|
642 struct e1000_hw *hw = &adapter->hw; |
|
643 s32 ret_val = __ew32_prepare(hw); |
|
644 |
|
645 writel(i, tx_ring->tail); |
|
646 |
|
647 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) { |
|
648 u32 tctl = er32(TCTL); |
|
649 |
|
650 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
651 e_err("ME firmware caused invalid TDT - resetting\n"); |
|
652 schedule_work(&adapter->reset_task); |
|
653 } |
|
654 } |
|
655 |
|
656 /** |
|
657 * e1000_alloc_rx_buffers - Replace used receive buffers |
|
658 * @rx_ring: Rx descriptor ring |
|
659 **/ |
|
660 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring, |
|
661 int cleaned_count, gfp_t gfp) |
|
662 { |
|
663 struct e1000_adapter *adapter = rx_ring->adapter; |
|
664 struct net_device *netdev = adapter->netdev; |
|
665 struct pci_dev *pdev = adapter->pdev; |
|
666 union e1000_rx_desc_extended *rx_desc; |
|
667 struct e1000_buffer *buffer_info; |
|
668 struct sk_buff *skb; |
|
669 unsigned int i; |
|
670 unsigned int bufsz = adapter->rx_buffer_len; |
|
671 |
|
672 i = rx_ring->next_to_use; |
|
673 buffer_info = &rx_ring->buffer_info[i]; |
|
674 |
|
675 while (cleaned_count--) { |
|
676 skb = buffer_info->skb; |
|
677 if (skb) { |
|
678 skb_trim(skb, 0); |
|
679 goto map_skb; |
|
680 } |
|
681 |
|
682 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
683 if (!skb) { |
|
684 /* Better luck next round */ |
|
685 adapter->alloc_rx_buff_failed++; |
|
686 break; |
|
687 } |
|
688 |
|
689 buffer_info->skb = skb; |
|
690 map_skb: |
|
691 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
692 adapter->rx_buffer_len, |
|
693 DMA_FROM_DEVICE); |
|
694 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
695 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
696 adapter->rx_dma_failed++; |
|
697 break; |
|
698 } |
|
699 |
|
700 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
701 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
702 |
|
703 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
704 /* Force memory writes to complete before letting h/w |
|
705 * know there are new descriptors to fetch. (Only |
|
706 * applicable for weak-ordered memory model archs, |
|
707 * such as IA-64). |
|
708 */ |
|
709 wmb(); |
|
710 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
711 e1000e_update_rdt_wa(rx_ring, i); |
|
712 else |
|
713 writel(i, rx_ring->tail); |
|
714 } |
|
715 i++; |
|
716 if (i == rx_ring->count) |
|
717 i = 0; |
|
718 buffer_info = &rx_ring->buffer_info[i]; |
|
719 } |
|
720 |
|
721 rx_ring->next_to_use = i; |
|
722 } |
|
723 |
|
724 /** |
|
725 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
726 * @rx_ring: Rx descriptor ring |
|
727 **/ |
|
728 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring, |
|
729 int cleaned_count, gfp_t gfp) |
|
730 { |
|
731 struct e1000_adapter *adapter = rx_ring->adapter; |
|
732 struct net_device *netdev = adapter->netdev; |
|
733 struct pci_dev *pdev = adapter->pdev; |
|
734 union e1000_rx_desc_packet_split *rx_desc; |
|
735 struct e1000_buffer *buffer_info; |
|
736 struct e1000_ps_page *ps_page; |
|
737 struct sk_buff *skb; |
|
738 unsigned int i, j; |
|
739 |
|
740 i = rx_ring->next_to_use; |
|
741 buffer_info = &rx_ring->buffer_info[i]; |
|
742 |
|
743 while (cleaned_count--) { |
|
744 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
745 |
|
746 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
747 ps_page = &buffer_info->ps_pages[j]; |
|
748 if (j >= adapter->rx_ps_pages) { |
|
749 /* all unused desc entries get hw null ptr */ |
|
750 rx_desc->read.buffer_addr[j + 1] = |
|
751 ~cpu_to_le64(0); |
|
752 continue; |
|
753 } |
|
754 if (!ps_page->page) { |
|
755 ps_page->page = alloc_page(gfp); |
|
756 if (!ps_page->page) { |
|
757 adapter->alloc_rx_buff_failed++; |
|
758 goto no_buffers; |
|
759 } |
|
760 ps_page->dma = dma_map_page(&pdev->dev, |
|
761 ps_page->page, |
|
762 0, PAGE_SIZE, |
|
763 DMA_FROM_DEVICE); |
|
764 if (dma_mapping_error(&pdev->dev, |
|
765 ps_page->dma)) { |
|
766 dev_err(&adapter->pdev->dev, |
|
767 "Rx DMA page map failed\n"); |
|
768 adapter->rx_dma_failed++; |
|
769 goto no_buffers; |
|
770 } |
|
771 } |
|
772 /* Refresh the desc even if buffer_addrs |
|
773 * didn't change because each write-back |
|
774 * erases this info. |
|
775 */ |
|
776 rx_desc->read.buffer_addr[j + 1] = |
|
777 cpu_to_le64(ps_page->dma); |
|
778 } |
|
779 |
|
780 skb = __netdev_alloc_skb_ip_align(netdev, adapter->rx_ps_bsize0, |
|
781 gfp); |
|
782 |
|
783 if (!skb) { |
|
784 adapter->alloc_rx_buff_failed++; |
|
785 break; |
|
786 } |
|
787 |
|
788 buffer_info->skb = skb; |
|
789 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
790 adapter->rx_ps_bsize0, |
|
791 DMA_FROM_DEVICE); |
|
792 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
793 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
794 adapter->rx_dma_failed++; |
|
795 /* cleanup skb */ |
|
796 dev_kfree_skb_any(skb); |
|
797 buffer_info->skb = NULL; |
|
798 break; |
|
799 } |
|
800 |
|
801 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
802 |
|
803 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
804 /* Force memory writes to complete before letting h/w |
|
805 * know there are new descriptors to fetch. (Only |
|
806 * applicable for weak-ordered memory model archs, |
|
807 * such as IA-64). |
|
808 */ |
|
809 wmb(); |
|
810 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
811 e1000e_update_rdt_wa(rx_ring, i << 1); |
|
812 else |
|
813 writel(i << 1, rx_ring->tail); |
|
814 } |
|
815 |
|
816 i++; |
|
817 if (i == rx_ring->count) |
|
818 i = 0; |
|
819 buffer_info = &rx_ring->buffer_info[i]; |
|
820 } |
|
821 |
|
822 no_buffers: |
|
823 rx_ring->next_to_use = i; |
|
824 } |
|
825 |
|
826 /** |
|
827 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
828 * @rx_ring: Rx descriptor ring |
|
829 * @cleaned_count: number of buffers to allocate this pass |
|
830 **/ |
|
831 |
|
832 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring, |
|
833 int cleaned_count, gfp_t gfp) |
|
834 { |
|
835 struct e1000_adapter *adapter = rx_ring->adapter; |
|
836 struct net_device *netdev = adapter->netdev; |
|
837 struct pci_dev *pdev = adapter->pdev; |
|
838 union e1000_rx_desc_extended *rx_desc; |
|
839 struct e1000_buffer *buffer_info; |
|
840 struct sk_buff *skb; |
|
841 unsigned int i; |
|
842 unsigned int bufsz = 256 - 16; /* for skb_reserve */ |
|
843 |
|
844 i = rx_ring->next_to_use; |
|
845 buffer_info = &rx_ring->buffer_info[i]; |
|
846 |
|
847 while (cleaned_count--) { |
|
848 skb = buffer_info->skb; |
|
849 if (skb) { |
|
850 skb_trim(skb, 0); |
|
851 goto check_page; |
|
852 } |
|
853 |
|
854 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
855 if (unlikely(!skb)) { |
|
856 /* Better luck next round */ |
|
857 adapter->alloc_rx_buff_failed++; |
|
858 break; |
|
859 } |
|
860 |
|
861 buffer_info->skb = skb; |
|
862 check_page: |
|
863 /* allocate a new page if necessary */ |
|
864 if (!buffer_info->page) { |
|
865 buffer_info->page = alloc_page(gfp); |
|
866 if (unlikely(!buffer_info->page)) { |
|
867 adapter->alloc_rx_buff_failed++; |
|
868 break; |
|
869 } |
|
870 } |
|
871 |
|
872 if (!buffer_info->dma) { |
|
873 buffer_info->dma = dma_map_page(&pdev->dev, |
|
874 buffer_info->page, 0, |
|
875 PAGE_SIZE, |
|
876 DMA_FROM_DEVICE); |
|
877 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
878 adapter->alloc_rx_buff_failed++; |
|
879 break; |
|
880 } |
|
881 } |
|
882 |
|
883 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
884 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
885 |
|
886 if (unlikely(++i == rx_ring->count)) |
|
887 i = 0; |
|
888 buffer_info = &rx_ring->buffer_info[i]; |
|
889 } |
|
890 |
|
891 if (likely(rx_ring->next_to_use != i)) { |
|
892 rx_ring->next_to_use = i; |
|
893 if (unlikely(i-- == 0)) |
|
894 i = (rx_ring->count - 1); |
|
895 |
|
896 /* Force memory writes to complete before letting h/w |
|
897 * know there are new descriptors to fetch. (Only |
|
898 * applicable for weak-ordered memory model archs, |
|
899 * such as IA-64). |
|
900 */ |
|
901 wmb(); |
|
902 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
903 e1000e_update_rdt_wa(rx_ring, i); |
|
904 else |
|
905 writel(i, rx_ring->tail); |
|
906 } |
|
907 } |
|
908 |
|
909 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss, |
|
910 struct sk_buff *skb) |
|
911 { |
|
912 if (netdev->features & NETIF_F_RXHASH) |
|
913 skb_set_hash(skb, le32_to_cpu(rss), PKT_HASH_TYPE_L3); |
|
914 } |
|
915 |
|
916 /** |
|
917 * e1000_clean_rx_irq - Send received data up the network stack |
|
918 * @rx_ring: Rx descriptor ring |
|
919 * |
|
920 * the return value indicates whether actual cleaning was done, there |
|
921 * is no guarantee that everything was cleaned |
|
922 **/ |
|
923 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
924 int work_to_do) |
|
925 { |
|
926 struct e1000_adapter *adapter = rx_ring->adapter; |
|
927 struct net_device *netdev = adapter->netdev; |
|
928 struct pci_dev *pdev = adapter->pdev; |
|
929 struct e1000_hw *hw = &adapter->hw; |
|
930 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
931 struct e1000_buffer *buffer_info, *next_buffer; |
|
932 u32 length, staterr; |
|
933 unsigned int i; |
|
934 int cleaned_count = 0; |
|
935 bool cleaned = false; |
|
936 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
937 |
|
938 i = rx_ring->next_to_clean; |
|
939 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
940 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
941 buffer_info = &rx_ring->buffer_info[i]; |
|
942 |
|
943 while (staterr & E1000_RXD_STAT_DD) { |
|
944 struct sk_buff *skb; |
|
945 |
|
946 if (*work_done >= work_to_do) |
|
947 break; |
|
948 (*work_done)++; |
|
949 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
950 |
|
951 skb = buffer_info->skb; |
|
952 buffer_info->skb = NULL; |
|
953 |
|
954 prefetch(skb->data - NET_IP_ALIGN); |
|
955 |
|
956 i++; |
|
957 if (i == rx_ring->count) |
|
958 i = 0; |
|
959 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
960 prefetch(next_rxd); |
|
961 |
|
962 next_buffer = &rx_ring->buffer_info[i]; |
|
963 |
|
964 cleaned = true; |
|
965 cleaned_count++; |
|
966 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
967 adapter->rx_buffer_len, DMA_FROM_DEVICE); |
|
968 buffer_info->dma = 0; |
|
969 |
|
970 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
971 |
|
972 /* !EOP means multiple descriptors were used to store a single |
|
973 * packet, if that's the case we need to toss it. In fact, we |
|
974 * need to toss every packet with the EOP bit clear and the |
|
975 * next frame that _does_ have the EOP bit set, as it is by |
|
976 * definition only a frame fragment |
|
977 */ |
|
978 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
|
979 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
980 |
|
981 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
982 /* All receives must fit into a single buffer */ |
|
983 e_dbg("Receive packet consumed multiple buffers\n"); |
|
984 /* recycle */ |
|
985 buffer_info->skb = skb; |
|
986 if (staterr & E1000_RXD_STAT_EOP) |
|
987 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
988 goto next_desc; |
|
989 } |
|
990 |
|
991 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
992 !(netdev->features & NETIF_F_RXALL))) { |
|
993 /* recycle */ |
|
994 buffer_info->skb = skb; |
|
995 goto next_desc; |
|
996 } |
|
997 |
|
998 /* adjust length to remove Ethernet CRC */ |
|
999 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1000 /* If configured to store CRC, don't subtract FCS, |
|
1001 * but keep the FCS bytes out of the total_rx_bytes |
|
1002 * counter |
|
1003 */ |
|
1004 if (netdev->features & NETIF_F_RXFCS) |
|
1005 total_rx_bytes -= 4; |
|
1006 else |
|
1007 length -= 4; |
|
1008 } |
|
1009 |
|
1010 total_rx_bytes += length; |
|
1011 total_rx_packets++; |
|
1012 |
|
1013 /* code added for copybreak, this should improve |
|
1014 * performance for small packets with large amounts |
|
1015 * of reassembly being done in the stack |
|
1016 */ |
|
1017 if (length < copybreak) { |
|
1018 struct sk_buff *new_skb = |
|
1019 netdev_alloc_skb_ip_align(netdev, length); |
|
1020 if (new_skb) { |
|
1021 skb_copy_to_linear_data_offset(new_skb, |
|
1022 -NET_IP_ALIGN, |
|
1023 (skb->data - |
|
1024 NET_IP_ALIGN), |
|
1025 (length + |
|
1026 NET_IP_ALIGN)); |
|
1027 /* save the skb in buffer_info as good */ |
|
1028 buffer_info->skb = skb; |
|
1029 skb = new_skb; |
|
1030 } |
|
1031 /* else just continue with the old one */ |
|
1032 } |
|
1033 /* end copybreak code */ |
|
1034 skb_put(skb, length); |
|
1035 |
|
1036 /* Receive Checksum Offload */ |
|
1037 e1000_rx_checksum(adapter, staterr, skb); |
|
1038 |
|
1039 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1040 |
|
1041 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1042 rx_desc->wb.upper.vlan); |
|
1043 |
|
1044 next_desc: |
|
1045 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1046 |
|
1047 /* return some buffers to hardware, one at a time is too slow */ |
|
1048 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1049 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1050 GFP_ATOMIC); |
|
1051 cleaned_count = 0; |
|
1052 } |
|
1053 |
|
1054 /* use prefetched values */ |
|
1055 rx_desc = next_rxd; |
|
1056 buffer_info = next_buffer; |
|
1057 |
|
1058 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1059 } |
|
1060 rx_ring->next_to_clean = i; |
|
1061 |
|
1062 cleaned_count = e1000_desc_unused(rx_ring); |
|
1063 if (cleaned_count) |
|
1064 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1065 |
|
1066 adapter->total_rx_bytes += total_rx_bytes; |
|
1067 adapter->total_rx_packets += total_rx_packets; |
|
1068 return cleaned; |
|
1069 } |
|
1070 |
|
1071 static void e1000_put_txbuf(struct e1000_ring *tx_ring, |
|
1072 struct e1000_buffer *buffer_info) |
|
1073 { |
|
1074 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1075 |
|
1076 if (buffer_info->dma) { |
|
1077 if (buffer_info->mapped_as_page) |
|
1078 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1079 buffer_info->length, DMA_TO_DEVICE); |
|
1080 else |
|
1081 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1082 buffer_info->length, DMA_TO_DEVICE); |
|
1083 buffer_info->dma = 0; |
|
1084 } |
|
1085 if (buffer_info->skb) { |
|
1086 dev_kfree_skb_any(buffer_info->skb); |
|
1087 buffer_info->skb = NULL; |
|
1088 } |
|
1089 buffer_info->time_stamp = 0; |
|
1090 } |
|
1091 |
|
1092 static void e1000_print_hw_hang(struct work_struct *work) |
|
1093 { |
|
1094 struct e1000_adapter *adapter = container_of(work, |
|
1095 struct e1000_adapter, |
|
1096 print_hang_task); |
|
1097 struct net_device *netdev = adapter->netdev; |
|
1098 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1099 unsigned int i = tx_ring->next_to_clean; |
|
1100 unsigned int eop = tx_ring->buffer_info[i].next_to_watch; |
|
1101 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1102 struct e1000_hw *hw = &adapter->hw; |
|
1103 u16 phy_status, phy_1000t_status, phy_ext_status; |
|
1104 u16 pci_status; |
|
1105 |
|
1106 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1107 return; |
|
1108 |
|
1109 if (!adapter->tx_hang_recheck && (adapter->flags2 & FLAG2_DMA_BURST)) { |
|
1110 /* May be block on write-back, flush and detect again |
|
1111 * flush pending descriptor writebacks to memory |
|
1112 */ |
|
1113 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1114 /* execute the writes immediately */ |
|
1115 e1e_flush(); |
|
1116 /* Due to rare timing issues, write to TIDV again to ensure |
|
1117 * the write is successful |
|
1118 */ |
|
1119 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1120 /* execute the writes immediately */ |
|
1121 e1e_flush(); |
|
1122 adapter->tx_hang_recheck = true; |
|
1123 return; |
|
1124 } |
|
1125 adapter->tx_hang_recheck = false; |
|
1126 |
|
1127 if (er32(TDH(0)) == er32(TDT(0))) { |
|
1128 e_dbg("false hang detected, ignoring\n"); |
|
1129 return; |
|
1130 } |
|
1131 |
|
1132 /* Real hang detected */ |
|
1133 netif_stop_queue(netdev); |
|
1134 |
|
1135 e1e_rphy(hw, MII_BMSR, &phy_status); |
|
1136 e1e_rphy(hw, MII_STAT1000, &phy_1000t_status); |
|
1137 e1e_rphy(hw, MII_ESTATUS, &phy_ext_status); |
|
1138 |
|
1139 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
|
1140 |
|
1141 /* detected Hardware unit hang */ |
|
1142 e_err("Detected Hardware Unit Hang:\n" |
|
1143 " TDH <%x>\n" |
|
1144 " TDT <%x>\n" |
|
1145 " next_to_use <%x>\n" |
|
1146 " next_to_clean <%x>\n" |
|
1147 "buffer_info[next_to_clean]:\n" |
|
1148 " time_stamp <%lx>\n" |
|
1149 " next_to_watch <%x>\n" |
|
1150 " jiffies <%lx>\n" |
|
1151 " next_to_watch.status <%x>\n" |
|
1152 "MAC Status <%x>\n" |
|
1153 "PHY Status <%x>\n" |
|
1154 "PHY 1000BASE-T Status <%x>\n" |
|
1155 "PHY Extended Status <%x>\n" |
|
1156 "PCI Status <%x>\n", |
|
1157 readl(tx_ring->head), readl(tx_ring->tail), tx_ring->next_to_use, |
|
1158 tx_ring->next_to_clean, tx_ring->buffer_info[eop].time_stamp, |
|
1159 eop, jiffies, eop_desc->upper.fields.status, er32(STATUS), |
|
1160 phy_status, phy_1000t_status, phy_ext_status, pci_status); |
|
1161 |
|
1162 e1000e_dump(adapter); |
|
1163 |
|
1164 /* Suggest workaround for known h/w issue */ |
|
1165 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE)) |
|
1166 e_err("Try turning off Tx pause (flow control) via ethtool\n"); |
|
1167 } |
|
1168 |
|
1169 /** |
|
1170 * e1000e_tx_hwtstamp_work - check for Tx time stamp |
|
1171 * @work: pointer to work struct |
|
1172 * |
|
1173 * This work function polls the TSYNCTXCTL valid bit to determine when a |
|
1174 * timestamp has been taken for the current stored skb. The timestamp must |
|
1175 * be for this skb because only one such packet is allowed in the queue. |
|
1176 */ |
|
1177 static void e1000e_tx_hwtstamp_work(struct work_struct *work) |
|
1178 { |
|
1179 struct e1000_adapter *adapter = container_of(work, struct e1000_adapter, |
|
1180 tx_hwtstamp_work); |
|
1181 struct e1000_hw *hw = &adapter->hw; |
|
1182 |
|
1183 if (er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID) { |
|
1184 struct skb_shared_hwtstamps shhwtstamps; |
|
1185 u64 txstmp; |
|
1186 |
|
1187 txstmp = er32(TXSTMPL); |
|
1188 txstmp |= (u64)er32(TXSTMPH) << 32; |
|
1189 |
|
1190 e1000e_systim_to_hwtstamp(adapter, &shhwtstamps, txstmp); |
|
1191 |
|
1192 skb_tstamp_tx(adapter->tx_hwtstamp_skb, &shhwtstamps); |
|
1193 dev_kfree_skb_any(adapter->tx_hwtstamp_skb); |
|
1194 adapter->tx_hwtstamp_skb = NULL; |
|
1195 } else if (time_after(jiffies, adapter->tx_hwtstamp_start |
|
1196 + adapter->tx_timeout_factor * HZ)) { |
|
1197 dev_kfree_skb_any(adapter->tx_hwtstamp_skb); |
|
1198 adapter->tx_hwtstamp_skb = NULL; |
|
1199 adapter->tx_hwtstamp_timeouts++; |
|
1200 e_warn("clearing Tx timestamp hang\n"); |
|
1201 } else { |
|
1202 /* reschedule to check later */ |
|
1203 schedule_work(&adapter->tx_hwtstamp_work); |
|
1204 } |
|
1205 } |
|
1206 |
|
1207 /** |
|
1208 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
1209 * @tx_ring: Tx descriptor ring |
|
1210 * |
|
1211 * the return value indicates whether actual cleaning was done, there |
|
1212 * is no guarantee that everything was cleaned |
|
1213 **/ |
|
1214 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) |
|
1215 { |
|
1216 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1217 struct net_device *netdev = adapter->netdev; |
|
1218 struct e1000_hw *hw = &adapter->hw; |
|
1219 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
1220 struct e1000_buffer *buffer_info; |
|
1221 unsigned int i, eop; |
|
1222 unsigned int count = 0; |
|
1223 unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
|
1224 unsigned int bytes_compl = 0, pkts_compl = 0; |
|
1225 |
|
1226 i = tx_ring->next_to_clean; |
|
1227 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1228 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1229 |
|
1230 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
1231 (count < tx_ring->count)) { |
|
1232 bool cleaned = false; |
|
1233 |
|
1234 rmb(); /* read buffer_info after eop_desc */ |
|
1235 for (; !cleaned; count++) { |
|
1236 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
1237 buffer_info = &tx_ring->buffer_info[i]; |
|
1238 cleaned = (i == eop); |
|
1239 |
|
1240 if (cleaned) { |
|
1241 total_tx_packets += buffer_info->segs; |
|
1242 total_tx_bytes += buffer_info->bytecount; |
|
1243 if (buffer_info->skb) { |
|
1244 bytes_compl += buffer_info->skb->len; |
|
1245 pkts_compl++; |
|
1246 } |
|
1247 } |
|
1248 |
|
1249 e1000_put_txbuf(tx_ring, buffer_info); |
|
1250 tx_desc->upper.data = 0; |
|
1251 |
|
1252 i++; |
|
1253 if (i == tx_ring->count) |
|
1254 i = 0; |
|
1255 } |
|
1256 |
|
1257 if (i == tx_ring->next_to_use) |
|
1258 break; |
|
1259 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1260 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1261 } |
|
1262 |
|
1263 tx_ring->next_to_clean = i; |
|
1264 |
|
1265 netdev_completed_queue(netdev, pkts_compl, bytes_compl); |
|
1266 |
|
1267 #define TX_WAKE_THRESHOLD 32 |
|
1268 if (count && netif_carrier_ok(netdev) && |
|
1269 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { |
|
1270 /* Make sure that anybody stopping the queue after this |
|
1271 * sees the new next_to_clean. |
|
1272 */ |
|
1273 smp_mb(); |
|
1274 |
|
1275 if (netif_queue_stopped(netdev) && |
|
1276 !(test_bit(__E1000_DOWN, &adapter->state))) { |
|
1277 netif_wake_queue(netdev); |
|
1278 ++adapter->restart_queue; |
|
1279 } |
|
1280 } |
|
1281 |
|
1282 if (adapter->detect_tx_hung) { |
|
1283 /* Detect a transmit hang in hardware, this serializes the |
|
1284 * check with the clearing of time_stamp and movement of i |
|
1285 */ |
|
1286 adapter->detect_tx_hung = false; |
|
1287 if (tx_ring->buffer_info[i].time_stamp && |
|
1288 time_after(jiffies, tx_ring->buffer_info[i].time_stamp |
|
1289 + (adapter->tx_timeout_factor * HZ)) && |
|
1290 !(er32(STATUS) & E1000_STATUS_TXOFF)) |
|
1291 schedule_work(&adapter->print_hang_task); |
|
1292 else |
|
1293 adapter->tx_hang_recheck = false; |
|
1294 } |
|
1295 adapter->total_tx_bytes += total_tx_bytes; |
|
1296 adapter->total_tx_packets += total_tx_packets; |
|
1297 return count < tx_ring->count; |
|
1298 } |
|
1299 |
|
1300 /** |
|
1301 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
1302 * @rx_ring: Rx descriptor ring |
|
1303 * |
|
1304 * the return value indicates whether actual cleaning was done, there |
|
1305 * is no guarantee that everything was cleaned |
|
1306 **/ |
|
1307 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, |
|
1308 int work_to_do) |
|
1309 { |
|
1310 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1311 struct e1000_hw *hw = &adapter->hw; |
|
1312 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
1313 struct net_device *netdev = adapter->netdev; |
|
1314 struct pci_dev *pdev = adapter->pdev; |
|
1315 struct e1000_buffer *buffer_info, *next_buffer; |
|
1316 struct e1000_ps_page *ps_page; |
|
1317 struct sk_buff *skb; |
|
1318 unsigned int i, j; |
|
1319 u32 length, staterr; |
|
1320 int cleaned_count = 0; |
|
1321 bool cleaned = false; |
|
1322 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1323 |
|
1324 i = rx_ring->next_to_clean; |
|
1325 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
1326 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1327 buffer_info = &rx_ring->buffer_info[i]; |
|
1328 |
|
1329 while (staterr & E1000_RXD_STAT_DD) { |
|
1330 if (*work_done >= work_to_do) |
|
1331 break; |
|
1332 (*work_done)++; |
|
1333 skb = buffer_info->skb; |
|
1334 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1335 |
|
1336 /* in the packet split case this is header only */ |
|
1337 prefetch(skb->data - NET_IP_ALIGN); |
|
1338 |
|
1339 i++; |
|
1340 if (i == rx_ring->count) |
|
1341 i = 0; |
|
1342 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
1343 prefetch(next_rxd); |
|
1344 |
|
1345 next_buffer = &rx_ring->buffer_info[i]; |
|
1346 |
|
1347 cleaned = true; |
|
1348 cleaned_count++; |
|
1349 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1350 adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
|
1351 buffer_info->dma = 0; |
|
1352 |
|
1353 /* see !EOP comment in other Rx routine */ |
|
1354 if (!(staterr & E1000_RXD_STAT_EOP)) |
|
1355 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
1356 |
|
1357 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
1358 e_dbg("Packet Split buffers didn't pick up the full packet\n"); |
|
1359 dev_kfree_skb_irq(skb); |
|
1360 if (staterr & E1000_RXD_STAT_EOP) |
|
1361 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1362 goto next_desc; |
|
1363 } |
|
1364 |
|
1365 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1366 !(netdev->features & NETIF_F_RXALL))) { |
|
1367 dev_kfree_skb_irq(skb); |
|
1368 goto next_desc; |
|
1369 } |
|
1370 |
|
1371 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
1372 |
|
1373 if (!length) { |
|
1374 e_dbg("Last part of the packet spanning multiple descriptors\n"); |
|
1375 dev_kfree_skb_irq(skb); |
|
1376 goto next_desc; |
|
1377 } |
|
1378 |
|
1379 /* Good Receive */ |
|
1380 skb_put(skb, length); |
|
1381 |
|
1382 { |
|
1383 /* this looks ugly, but it seems compiler issues make |
|
1384 * it more efficient than reusing j |
|
1385 */ |
|
1386 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
1387 |
|
1388 /* page alloc/put takes too long and effects small |
|
1389 * packet throughput, so unsplit small packets and |
|
1390 * save the alloc/put only valid in softirq (napi) |
|
1391 * context to call kmap_* |
|
1392 */ |
|
1393 if (l1 && (l1 <= copybreak) && |
|
1394 ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
1395 u8 *vaddr; |
|
1396 |
|
1397 ps_page = &buffer_info->ps_pages[0]; |
|
1398 |
|
1399 /* there is no documentation about how to call |
|
1400 * kmap_atomic, so we can't hold the mapping |
|
1401 * very long |
|
1402 */ |
|
1403 dma_sync_single_for_cpu(&pdev->dev, |
|
1404 ps_page->dma, |
|
1405 PAGE_SIZE, |
|
1406 DMA_FROM_DEVICE); |
|
1407 vaddr = kmap_atomic(ps_page->page); |
|
1408 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
1409 kunmap_atomic(vaddr); |
|
1410 dma_sync_single_for_device(&pdev->dev, |
|
1411 ps_page->dma, |
|
1412 PAGE_SIZE, |
|
1413 DMA_FROM_DEVICE); |
|
1414 |
|
1415 /* remove the CRC */ |
|
1416 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1417 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1418 l1 -= 4; |
|
1419 } |
|
1420 |
|
1421 skb_put(skb, l1); |
|
1422 goto copydone; |
|
1423 } /* if */ |
|
1424 } |
|
1425 |
|
1426 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1427 length = le16_to_cpu(rx_desc->wb.upper.length[j]); |
|
1428 if (!length) |
|
1429 break; |
|
1430 |
|
1431 ps_page = &buffer_info->ps_pages[j]; |
|
1432 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1433 DMA_FROM_DEVICE); |
|
1434 ps_page->dma = 0; |
|
1435 skb_fill_page_desc(skb, j, ps_page->page, 0, length); |
|
1436 ps_page->page = NULL; |
|
1437 skb->len += length; |
|
1438 skb->data_len += length; |
|
1439 skb->truesize += PAGE_SIZE; |
|
1440 } |
|
1441 |
|
1442 /* strip the ethernet crc, problem is we're using pages now so |
|
1443 * this whole operation can get a little cpu intensive |
|
1444 */ |
|
1445 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1446 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1447 pskb_trim(skb, skb->len - 4); |
|
1448 } |
|
1449 |
|
1450 copydone: |
|
1451 total_rx_bytes += skb->len; |
|
1452 total_rx_packets++; |
|
1453 |
|
1454 e1000_rx_checksum(adapter, staterr, skb); |
|
1455 |
|
1456 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1457 |
|
1458 if (rx_desc->wb.upper.header_status & |
|
1459 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
|
1460 adapter->rx_hdr_split++; |
|
1461 |
|
1462 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1463 rx_desc->wb.middle.vlan); |
|
1464 |
|
1465 next_desc: |
|
1466 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
1467 buffer_info->skb = NULL; |
|
1468 |
|
1469 /* return some buffers to hardware, one at a time is too slow */ |
|
1470 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1471 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1472 GFP_ATOMIC); |
|
1473 cleaned_count = 0; |
|
1474 } |
|
1475 |
|
1476 /* use prefetched values */ |
|
1477 rx_desc = next_rxd; |
|
1478 buffer_info = next_buffer; |
|
1479 |
|
1480 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1481 } |
|
1482 rx_ring->next_to_clean = i; |
|
1483 |
|
1484 cleaned_count = e1000_desc_unused(rx_ring); |
|
1485 if (cleaned_count) |
|
1486 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1487 |
|
1488 adapter->total_rx_bytes += total_rx_bytes; |
|
1489 adapter->total_rx_packets += total_rx_packets; |
|
1490 return cleaned; |
|
1491 } |
|
1492 |
|
1493 /** |
|
1494 * e1000_consume_page - helper function |
|
1495 **/ |
|
1496 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
1497 u16 length) |
|
1498 { |
|
1499 bi->page = NULL; |
|
1500 skb->len += length; |
|
1501 skb->data_len += length; |
|
1502 skb->truesize += PAGE_SIZE; |
|
1503 } |
|
1504 |
|
1505 /** |
|
1506 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
1507 * @adapter: board private structure |
|
1508 * |
|
1509 * the return value indicates whether actual cleaning was done, there |
|
1510 * is no guarantee that everything was cleaned |
|
1511 **/ |
|
1512 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
1513 int work_to_do) |
|
1514 { |
|
1515 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1516 struct net_device *netdev = adapter->netdev; |
|
1517 struct pci_dev *pdev = adapter->pdev; |
|
1518 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
1519 struct e1000_buffer *buffer_info, *next_buffer; |
|
1520 u32 length, staterr; |
|
1521 unsigned int i; |
|
1522 int cleaned_count = 0; |
|
1523 bool cleaned = false; |
|
1524 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1525 struct skb_shared_info *shinfo; |
|
1526 |
|
1527 i = rx_ring->next_to_clean; |
|
1528 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1529 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1530 buffer_info = &rx_ring->buffer_info[i]; |
|
1531 |
|
1532 while (staterr & E1000_RXD_STAT_DD) { |
|
1533 struct sk_buff *skb; |
|
1534 |
|
1535 if (*work_done >= work_to_do) |
|
1536 break; |
|
1537 (*work_done)++; |
|
1538 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1539 |
|
1540 skb = buffer_info->skb; |
|
1541 buffer_info->skb = NULL; |
|
1542 |
|
1543 ++i; |
|
1544 if (i == rx_ring->count) |
|
1545 i = 0; |
|
1546 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1547 prefetch(next_rxd); |
|
1548 |
|
1549 next_buffer = &rx_ring->buffer_info[i]; |
|
1550 |
|
1551 cleaned = true; |
|
1552 cleaned_count++; |
|
1553 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
|
1554 DMA_FROM_DEVICE); |
|
1555 buffer_info->dma = 0; |
|
1556 |
|
1557 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
1558 |
|
1559 /* errors is only valid for DD + EOP descriptors */ |
|
1560 if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
|
1561 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1562 !(netdev->features & NETIF_F_RXALL)))) { |
|
1563 /* recycle both page and skb */ |
|
1564 buffer_info->skb = skb; |
|
1565 /* an error means any chain goes out the window too */ |
|
1566 if (rx_ring->rx_skb_top) |
|
1567 dev_kfree_skb_irq(rx_ring->rx_skb_top); |
|
1568 rx_ring->rx_skb_top = NULL; |
|
1569 goto next_desc; |
|
1570 } |
|
1571 #define rxtop (rx_ring->rx_skb_top) |
|
1572 if (!(staterr & E1000_RXD_STAT_EOP)) { |
|
1573 /* this descriptor is only the beginning (or middle) */ |
|
1574 if (!rxtop) { |
|
1575 /* this is the beginning of a chain */ |
|
1576 rxtop = skb; |
|
1577 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
1578 0, length); |
|
1579 } else { |
|
1580 /* this is the middle of a chain */ |
|
1581 shinfo = skb_shinfo(rxtop); |
|
1582 skb_fill_page_desc(rxtop, shinfo->nr_frags, |
|
1583 buffer_info->page, 0, |
|
1584 length); |
|
1585 /* re-use the skb, only consumed the page */ |
|
1586 buffer_info->skb = skb; |
|
1587 } |
|
1588 e1000_consume_page(buffer_info, rxtop, length); |
|
1589 goto next_desc; |
|
1590 } else { |
|
1591 if (rxtop) { |
|
1592 /* end of the chain */ |
|
1593 shinfo = skb_shinfo(rxtop); |
|
1594 skb_fill_page_desc(rxtop, shinfo->nr_frags, |
|
1595 buffer_info->page, 0, |
|
1596 length); |
|
1597 /* re-use the current skb, we only consumed the |
|
1598 * page |
|
1599 */ |
|
1600 buffer_info->skb = skb; |
|
1601 skb = rxtop; |
|
1602 rxtop = NULL; |
|
1603 e1000_consume_page(buffer_info, skb, length); |
|
1604 } else { |
|
1605 /* no chain, got EOP, this buf is the packet |
|
1606 * copybreak to save the put_page/alloc_page |
|
1607 */ |
|
1608 if (length <= copybreak && |
|
1609 skb_tailroom(skb) >= length) { |
|
1610 u8 *vaddr; |
|
1611 vaddr = kmap_atomic(buffer_info->page); |
|
1612 memcpy(skb_tail_pointer(skb), vaddr, |
|
1613 length); |
|
1614 kunmap_atomic(vaddr); |
|
1615 /* re-use the page, so don't erase |
|
1616 * buffer_info->page |
|
1617 */ |
|
1618 skb_put(skb, length); |
|
1619 } else { |
|
1620 skb_fill_page_desc(skb, 0, |
|
1621 buffer_info->page, 0, |
|
1622 length); |
|
1623 e1000_consume_page(buffer_info, skb, |
|
1624 length); |
|
1625 } |
|
1626 } |
|
1627 } |
|
1628 |
|
1629 /* Receive Checksum Offload */ |
|
1630 e1000_rx_checksum(adapter, staterr, skb); |
|
1631 |
|
1632 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1633 |
|
1634 /* probably a little skewed due to removing CRC */ |
|
1635 total_rx_bytes += skb->len; |
|
1636 total_rx_packets++; |
|
1637 |
|
1638 /* eth type trans needs skb->data to point to something */ |
|
1639 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
1640 e_err("pskb_may_pull failed.\n"); |
|
1641 dev_kfree_skb_irq(skb); |
|
1642 goto next_desc; |
|
1643 } |
|
1644 |
|
1645 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1646 rx_desc->wb.upper.vlan); |
|
1647 |
|
1648 next_desc: |
|
1649 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1650 |
|
1651 /* return some buffers to hardware, one at a time is too slow */ |
|
1652 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
1653 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1654 GFP_ATOMIC); |
|
1655 cleaned_count = 0; |
|
1656 } |
|
1657 |
|
1658 /* use prefetched values */ |
|
1659 rx_desc = next_rxd; |
|
1660 buffer_info = next_buffer; |
|
1661 |
|
1662 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1663 } |
|
1664 rx_ring->next_to_clean = i; |
|
1665 |
|
1666 cleaned_count = e1000_desc_unused(rx_ring); |
|
1667 if (cleaned_count) |
|
1668 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1669 |
|
1670 adapter->total_rx_bytes += total_rx_bytes; |
|
1671 adapter->total_rx_packets += total_rx_packets; |
|
1672 return cleaned; |
|
1673 } |
|
1674 |
|
1675 /** |
|
1676 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1677 * @rx_ring: Rx descriptor ring |
|
1678 **/ |
|
1679 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring) |
|
1680 { |
|
1681 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1682 struct e1000_buffer *buffer_info; |
|
1683 struct e1000_ps_page *ps_page; |
|
1684 struct pci_dev *pdev = adapter->pdev; |
|
1685 unsigned int i, j; |
|
1686 |
|
1687 /* Free all the Rx ring sk_buffs */ |
|
1688 for (i = 0; i < rx_ring->count; i++) { |
|
1689 buffer_info = &rx_ring->buffer_info[i]; |
|
1690 if (buffer_info->dma) { |
|
1691 if (adapter->clean_rx == e1000_clean_rx_irq) |
|
1692 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1693 adapter->rx_buffer_len, |
|
1694 DMA_FROM_DEVICE); |
|
1695 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
|
1696 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
1697 PAGE_SIZE, DMA_FROM_DEVICE); |
|
1698 else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
|
1699 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1700 adapter->rx_ps_bsize0, |
|
1701 DMA_FROM_DEVICE); |
|
1702 buffer_info->dma = 0; |
|
1703 } |
|
1704 |
|
1705 if (buffer_info->page) { |
|
1706 put_page(buffer_info->page); |
|
1707 buffer_info->page = NULL; |
|
1708 } |
|
1709 |
|
1710 if (buffer_info->skb) { |
|
1711 dev_kfree_skb(buffer_info->skb); |
|
1712 buffer_info->skb = NULL; |
|
1713 } |
|
1714 |
|
1715 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1716 ps_page = &buffer_info->ps_pages[j]; |
|
1717 if (!ps_page->page) |
|
1718 break; |
|
1719 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1720 DMA_FROM_DEVICE); |
|
1721 ps_page->dma = 0; |
|
1722 put_page(ps_page->page); |
|
1723 ps_page->page = NULL; |
|
1724 } |
|
1725 } |
|
1726 |
|
1727 /* there also may be some cached data from a chained receive */ |
|
1728 if (rx_ring->rx_skb_top) { |
|
1729 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1730 rx_ring->rx_skb_top = NULL; |
|
1731 } |
|
1732 |
|
1733 /* Zero out the descriptor ring */ |
|
1734 memset(rx_ring->desc, 0, rx_ring->size); |
|
1735 |
|
1736 rx_ring->next_to_clean = 0; |
|
1737 rx_ring->next_to_use = 0; |
|
1738 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1739 |
|
1740 writel(0, rx_ring->head); |
|
1741 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
1742 e1000e_update_rdt_wa(rx_ring, 0); |
|
1743 else |
|
1744 writel(0, rx_ring->tail); |
|
1745 } |
|
1746 |
|
1747 static void e1000e_downshift_workaround(struct work_struct *work) |
|
1748 { |
|
1749 struct e1000_adapter *adapter = container_of(work, |
|
1750 struct e1000_adapter, |
|
1751 downshift_task); |
|
1752 |
|
1753 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1754 return; |
|
1755 |
|
1756 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
|
1757 } |
|
1758 |
|
1759 /** |
|
1760 * e1000_intr_msi - Interrupt Handler |
|
1761 * @irq: interrupt number |
|
1762 * @data: pointer to a network interface device structure |
|
1763 **/ |
|
1764 static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data) |
|
1765 { |
|
1766 struct net_device *netdev = data; |
|
1767 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1768 struct e1000_hw *hw = &adapter->hw; |
|
1769 u32 icr = er32(ICR); |
|
1770 |
|
1771 /* read ICR disables interrupts using IAM */ |
|
1772 if (icr & E1000_ICR_LSC) { |
|
1773 hw->mac.get_link_status = true; |
|
1774 /* ICH8 workaround-- Call gig speed drop workaround on cable |
|
1775 * disconnect (LSC) before accessing any PHY registers |
|
1776 */ |
|
1777 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1778 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1779 schedule_work(&adapter->downshift_task); |
|
1780 |
|
1781 /* 80003ES2LAN workaround-- For packet buffer work-around on |
|
1782 * link down event; disable receives here in the ISR and reset |
|
1783 * adapter in watchdog |
|
1784 */ |
|
1785 if (netif_carrier_ok(netdev) && |
|
1786 adapter->flags & FLAG_RX_NEEDS_RESTART) { |
|
1787 /* disable receives */ |
|
1788 u32 rctl = er32(RCTL); |
|
1789 |
|
1790 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1791 adapter->flags |= FLAG_RESTART_NOW; |
|
1792 } |
|
1793 /* guard against interrupt when we're going down */ |
|
1794 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1795 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1796 } |
|
1797 |
|
1798 /* Reset on uncorrectable ECC error */ |
|
1799 if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) { |
|
1800 u32 pbeccsts = er32(PBECCSTS); |
|
1801 |
|
1802 adapter->corr_errors += |
|
1803 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; |
|
1804 adapter->uncorr_errors += |
|
1805 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> |
|
1806 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; |
|
1807 |
|
1808 /* Do the reset outside of interrupt context */ |
|
1809 schedule_work(&adapter->reset_task); |
|
1810 |
|
1811 /* return immediately since reset is imminent */ |
|
1812 return IRQ_HANDLED; |
|
1813 } |
|
1814 |
|
1815 if (napi_schedule_prep(&adapter->napi)) { |
|
1816 adapter->total_tx_bytes = 0; |
|
1817 adapter->total_tx_packets = 0; |
|
1818 adapter->total_rx_bytes = 0; |
|
1819 adapter->total_rx_packets = 0; |
|
1820 __napi_schedule(&adapter->napi); |
|
1821 } |
|
1822 |
|
1823 return IRQ_HANDLED; |
|
1824 } |
|
1825 |
|
1826 /** |
|
1827 * e1000_intr - Interrupt Handler |
|
1828 * @irq: interrupt number |
|
1829 * @data: pointer to a network interface device structure |
|
1830 **/ |
|
1831 static irqreturn_t e1000_intr(int __always_unused irq, void *data) |
|
1832 { |
|
1833 struct net_device *netdev = data; |
|
1834 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1835 struct e1000_hw *hw = &adapter->hw; |
|
1836 u32 rctl, icr = er32(ICR); |
|
1837 |
|
1838 if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
|
1839 return IRQ_NONE; /* Not our interrupt */ |
|
1840 |
|
1841 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
1842 * not set, then the adapter didn't send an interrupt |
|
1843 */ |
|
1844 if (!(icr & E1000_ICR_INT_ASSERTED)) |
|
1845 return IRQ_NONE; |
|
1846 |
|
1847 /* Interrupt Auto-Mask...upon reading ICR, |
|
1848 * interrupts are masked. No need for the |
|
1849 * IMC write |
|
1850 */ |
|
1851 |
|
1852 if (icr & E1000_ICR_LSC) { |
|
1853 hw->mac.get_link_status = true; |
|
1854 /* ICH8 workaround-- Call gig speed drop workaround on cable |
|
1855 * disconnect (LSC) before accessing any PHY registers |
|
1856 */ |
|
1857 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1858 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1859 schedule_work(&adapter->downshift_task); |
|
1860 |
|
1861 /* 80003ES2LAN workaround-- |
|
1862 * For packet buffer work-around on link down event; |
|
1863 * disable receives here in the ISR and |
|
1864 * reset adapter in watchdog |
|
1865 */ |
|
1866 if (netif_carrier_ok(netdev) && |
|
1867 (adapter->flags & FLAG_RX_NEEDS_RESTART)) { |
|
1868 /* disable receives */ |
|
1869 rctl = er32(RCTL); |
|
1870 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1871 adapter->flags |= FLAG_RESTART_NOW; |
|
1872 } |
|
1873 /* guard against interrupt when we're going down */ |
|
1874 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1875 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1876 } |
|
1877 |
|
1878 /* Reset on uncorrectable ECC error */ |
|
1879 if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) { |
|
1880 u32 pbeccsts = er32(PBECCSTS); |
|
1881 |
|
1882 adapter->corr_errors += |
|
1883 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; |
|
1884 adapter->uncorr_errors += |
|
1885 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> |
|
1886 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; |
|
1887 |
|
1888 /* Do the reset outside of interrupt context */ |
|
1889 schedule_work(&adapter->reset_task); |
|
1890 |
|
1891 /* return immediately since reset is imminent */ |
|
1892 return IRQ_HANDLED; |
|
1893 } |
|
1894 |
|
1895 if (napi_schedule_prep(&adapter->napi)) { |
|
1896 adapter->total_tx_bytes = 0; |
|
1897 adapter->total_tx_packets = 0; |
|
1898 adapter->total_rx_bytes = 0; |
|
1899 adapter->total_rx_packets = 0; |
|
1900 __napi_schedule(&adapter->napi); |
|
1901 } |
|
1902 |
|
1903 return IRQ_HANDLED; |
|
1904 } |
|
1905 |
|
1906 static irqreturn_t e1000_msix_other(int __always_unused irq, void *data) |
|
1907 { |
|
1908 struct net_device *netdev = data; |
|
1909 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1910 struct e1000_hw *hw = &adapter->hw; |
|
1911 u32 icr = er32(ICR); |
|
1912 |
|
1913 if (!(icr & E1000_ICR_INT_ASSERTED)) { |
|
1914 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1915 ew32(IMS, E1000_IMS_OTHER); |
|
1916 return IRQ_NONE; |
|
1917 } |
|
1918 |
|
1919 if (icr & adapter->eiac_mask) |
|
1920 ew32(ICS, (icr & adapter->eiac_mask)); |
|
1921 |
|
1922 if (icr & E1000_ICR_OTHER) { |
|
1923 if (!(icr & E1000_ICR_LSC)) |
|
1924 goto no_link_interrupt; |
|
1925 hw->mac.get_link_status = true; |
|
1926 /* guard against interrupt when we're going down */ |
|
1927 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1928 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1929 } |
|
1930 |
|
1931 no_link_interrupt: |
|
1932 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1933 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); |
|
1934 |
|
1935 return IRQ_HANDLED; |
|
1936 } |
|
1937 |
|
1938 static irqreturn_t e1000_intr_msix_tx(int __always_unused irq, void *data) |
|
1939 { |
|
1940 struct net_device *netdev = data; |
|
1941 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1942 struct e1000_hw *hw = &adapter->hw; |
|
1943 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1944 |
|
1945 adapter->total_tx_bytes = 0; |
|
1946 adapter->total_tx_packets = 0; |
|
1947 |
|
1948 if (!e1000_clean_tx_irq(tx_ring)) |
|
1949 /* Ring was not completely cleaned, so fire another interrupt */ |
|
1950 ew32(ICS, tx_ring->ims_val); |
|
1951 |
|
1952 return IRQ_HANDLED; |
|
1953 } |
|
1954 |
|
1955 static irqreturn_t e1000_intr_msix_rx(int __always_unused irq, void *data) |
|
1956 { |
|
1957 struct net_device *netdev = data; |
|
1958 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1959 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1960 |
|
1961 /* Write the ITR value calculated at the end of the |
|
1962 * previous interrupt. |
|
1963 */ |
|
1964 if (rx_ring->set_itr) { |
|
1965 writel(1000000000 / (rx_ring->itr_val * 256), |
|
1966 rx_ring->itr_register); |
|
1967 rx_ring->set_itr = 0; |
|
1968 } |
|
1969 |
|
1970 if (napi_schedule_prep(&adapter->napi)) { |
|
1971 adapter->total_rx_bytes = 0; |
|
1972 adapter->total_rx_packets = 0; |
|
1973 __napi_schedule(&adapter->napi); |
|
1974 } |
|
1975 return IRQ_HANDLED; |
|
1976 } |
|
1977 |
|
1978 /** |
|
1979 * e1000_configure_msix - Configure MSI-X hardware |
|
1980 * |
|
1981 * e1000_configure_msix sets up the hardware to properly |
|
1982 * generate MSI-X interrupts. |
|
1983 **/ |
|
1984 static void e1000_configure_msix(struct e1000_adapter *adapter) |
|
1985 { |
|
1986 struct e1000_hw *hw = &adapter->hw; |
|
1987 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
1988 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1989 int vector = 0; |
|
1990 u32 ctrl_ext, ivar = 0; |
|
1991 |
|
1992 adapter->eiac_mask = 0; |
|
1993 |
|
1994 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ |
|
1995 if (hw->mac.type == e1000_82574) { |
|
1996 u32 rfctl = er32(RFCTL); |
|
1997 |
|
1998 rfctl |= E1000_RFCTL_ACK_DIS; |
|
1999 ew32(RFCTL, rfctl); |
|
2000 } |
|
2001 |
|
2002 /* Configure Rx vector */ |
|
2003 rx_ring->ims_val = E1000_IMS_RXQ0; |
|
2004 adapter->eiac_mask |= rx_ring->ims_val; |
|
2005 if (rx_ring->itr_val) |
|
2006 writel(1000000000 / (rx_ring->itr_val * 256), |
|
2007 rx_ring->itr_register); |
|
2008 else |
|
2009 writel(1, rx_ring->itr_register); |
|
2010 ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
|
2011 |
|
2012 /* Configure Tx vector */ |
|
2013 tx_ring->ims_val = E1000_IMS_TXQ0; |
|
2014 vector++; |
|
2015 if (tx_ring->itr_val) |
|
2016 writel(1000000000 / (tx_ring->itr_val * 256), |
|
2017 tx_ring->itr_register); |
|
2018 else |
|
2019 writel(1, tx_ring->itr_register); |
|
2020 adapter->eiac_mask |= tx_ring->ims_val; |
|
2021 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); |
|
2022 |
|
2023 /* set vector for Other Causes, e.g. link changes */ |
|
2024 vector++; |
|
2025 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); |
|
2026 if (rx_ring->itr_val) |
|
2027 writel(1000000000 / (rx_ring->itr_val * 256), |
|
2028 hw->hw_addr + E1000_EITR_82574(vector)); |
|
2029 else |
|
2030 writel(1, hw->hw_addr + E1000_EITR_82574(vector)); |
|
2031 |
|
2032 /* Cause Tx interrupts on every write back */ |
|
2033 ivar |= (1 << 31); |
|
2034 |
|
2035 ew32(IVAR, ivar); |
|
2036 |
|
2037 /* enable MSI-X PBA support */ |
|
2038 ctrl_ext = er32(CTRL_EXT); |
|
2039 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; |
|
2040 |
|
2041 /* Auto-Mask Other interrupts upon ICR read */ |
|
2042 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
|
2043 ctrl_ext |= E1000_CTRL_EXT_EIAME; |
|
2044 ew32(CTRL_EXT, ctrl_ext); |
|
2045 e1e_flush(); |
|
2046 } |
|
2047 |
|
2048 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) |
|
2049 { |
|
2050 if (adapter->msix_entries) { |
|
2051 pci_disable_msix(adapter->pdev); |
|
2052 kfree(adapter->msix_entries); |
|
2053 adapter->msix_entries = NULL; |
|
2054 } else if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2055 pci_disable_msi(adapter->pdev); |
|
2056 adapter->flags &= ~FLAG_MSI_ENABLED; |
|
2057 } |
|
2058 } |
|
2059 |
|
2060 /** |
|
2061 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported |
|
2062 * |
|
2063 * Attempt to configure interrupts using the best available |
|
2064 * capabilities of the hardware and kernel. |
|
2065 **/ |
|
2066 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) |
|
2067 { |
|
2068 int err; |
|
2069 int i; |
|
2070 |
|
2071 switch (adapter->int_mode) { |
|
2072 case E1000E_INT_MODE_MSIX: |
|
2073 if (adapter->flags & FLAG_HAS_MSIX) { |
|
2074 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
|
2075 adapter->msix_entries = kcalloc(adapter->num_vectors, |
|
2076 sizeof(struct |
|
2077 msix_entry), |
|
2078 GFP_KERNEL); |
|
2079 if (adapter->msix_entries) { |
|
2080 struct e1000_adapter *a = adapter; |
|
2081 |
|
2082 for (i = 0; i < adapter->num_vectors; i++) |
|
2083 adapter->msix_entries[i].entry = i; |
|
2084 |
|
2085 err = pci_enable_msix_range(a->pdev, |
|
2086 a->msix_entries, |
|
2087 a->num_vectors, |
|
2088 a->num_vectors); |
|
2089 if (err > 0) |
|
2090 return; |
|
2091 } |
|
2092 /* MSI-X failed, so fall through and try MSI */ |
|
2093 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n"); |
|
2094 e1000e_reset_interrupt_capability(adapter); |
|
2095 } |
|
2096 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2097 /* Fall through */ |
|
2098 case E1000E_INT_MODE_MSI: |
|
2099 if (!pci_enable_msi(adapter->pdev)) { |
|
2100 adapter->flags |= FLAG_MSI_ENABLED; |
|
2101 } else { |
|
2102 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2103 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n"); |
|
2104 } |
|
2105 /* Fall through */ |
|
2106 case E1000E_INT_MODE_LEGACY: |
|
2107 /* Don't do anything; this is the system default */ |
|
2108 break; |
|
2109 } |
|
2110 |
|
2111 /* store the number of vectors being used */ |
|
2112 adapter->num_vectors = 1; |
|
2113 } |
|
2114 |
|
2115 /** |
|
2116 * e1000_request_msix - Initialize MSI-X interrupts |
|
2117 * |
|
2118 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the |
|
2119 * kernel. |
|
2120 **/ |
|
2121 static int e1000_request_msix(struct e1000_adapter *adapter) |
|
2122 { |
|
2123 struct net_device *netdev = adapter->netdev; |
|
2124 int err = 0, vector = 0; |
|
2125 |
|
2126 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2127 snprintf(adapter->rx_ring->name, |
|
2128 sizeof(adapter->rx_ring->name) - 1, |
|
2129 "%s-rx-0", netdev->name); |
|
2130 else |
|
2131 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); |
|
2132 err = request_irq(adapter->msix_entries[vector].vector, |
|
2133 e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
|
2134 netdev); |
|
2135 if (err) |
|
2136 return err; |
|
2137 adapter->rx_ring->itr_register = adapter->hw.hw_addr + |
|
2138 E1000_EITR_82574(vector); |
|
2139 adapter->rx_ring->itr_val = adapter->itr; |
|
2140 vector++; |
|
2141 |
|
2142 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2143 snprintf(adapter->tx_ring->name, |
|
2144 sizeof(adapter->tx_ring->name) - 1, |
|
2145 "%s-tx-0", netdev->name); |
|
2146 else |
|
2147 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); |
|
2148 err = request_irq(adapter->msix_entries[vector].vector, |
|
2149 e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
|
2150 netdev); |
|
2151 if (err) |
|
2152 return err; |
|
2153 adapter->tx_ring->itr_register = adapter->hw.hw_addr + |
|
2154 E1000_EITR_82574(vector); |
|
2155 adapter->tx_ring->itr_val = adapter->itr; |
|
2156 vector++; |
|
2157 |
|
2158 err = request_irq(adapter->msix_entries[vector].vector, |
|
2159 e1000_msix_other, 0, netdev->name, netdev); |
|
2160 if (err) |
|
2161 return err; |
|
2162 |
|
2163 e1000_configure_msix(adapter); |
|
2164 |
|
2165 return 0; |
|
2166 } |
|
2167 |
|
2168 /** |
|
2169 * e1000_request_irq - initialize interrupts |
|
2170 * |
|
2171 * Attempts to configure interrupts using the best available |
|
2172 * capabilities of the hardware and kernel. |
|
2173 **/ |
|
2174 static int e1000_request_irq(struct e1000_adapter *adapter) |
|
2175 { |
|
2176 struct net_device *netdev = adapter->netdev; |
|
2177 int err; |
|
2178 |
|
2179 if (adapter->msix_entries) { |
|
2180 err = e1000_request_msix(adapter); |
|
2181 if (!err) |
|
2182 return err; |
|
2183 /* fall back to MSI */ |
|
2184 e1000e_reset_interrupt_capability(adapter); |
|
2185 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2186 e1000e_set_interrupt_capability(adapter); |
|
2187 } |
|
2188 if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2189 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
|
2190 netdev->name, netdev); |
|
2191 if (!err) |
|
2192 return err; |
|
2193 |
|
2194 /* fall back to legacy interrupt */ |
|
2195 e1000e_reset_interrupt_capability(adapter); |
|
2196 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2197 } |
|
2198 |
|
2199 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
|
2200 netdev->name, netdev); |
|
2201 if (err) |
|
2202 e_err("Unable to allocate interrupt, Error: %d\n", err); |
|
2203 |
|
2204 return err; |
|
2205 } |
|
2206 |
|
2207 static void e1000_free_irq(struct e1000_adapter *adapter) |
|
2208 { |
|
2209 struct net_device *netdev = adapter->netdev; |
|
2210 |
|
2211 if (adapter->msix_entries) { |
|
2212 int vector = 0; |
|
2213 |
|
2214 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2215 vector++; |
|
2216 |
|
2217 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2218 vector++; |
|
2219 |
|
2220 /* Other Causes interrupt vector */ |
|
2221 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2222 return; |
|
2223 } |
|
2224 |
|
2225 free_irq(adapter->pdev->irq, netdev); |
|
2226 } |
|
2227 |
|
2228 /** |
|
2229 * e1000_irq_disable - Mask off interrupt generation on the NIC |
|
2230 **/ |
|
2231 static void e1000_irq_disable(struct e1000_adapter *adapter) |
|
2232 { |
|
2233 struct e1000_hw *hw = &adapter->hw; |
|
2234 |
|
2235 ew32(IMC, ~0); |
|
2236 if (adapter->msix_entries) |
|
2237 ew32(EIAC_82574, 0); |
|
2238 e1e_flush(); |
|
2239 |
|
2240 if (adapter->msix_entries) { |
|
2241 int i; |
|
2242 |
|
2243 for (i = 0; i < adapter->num_vectors; i++) |
|
2244 synchronize_irq(adapter->msix_entries[i].vector); |
|
2245 } else { |
|
2246 synchronize_irq(adapter->pdev->irq); |
|
2247 } |
|
2248 } |
|
2249 |
|
2250 /** |
|
2251 * e1000_irq_enable - Enable default interrupt generation settings |
|
2252 **/ |
|
2253 static void e1000_irq_enable(struct e1000_adapter *adapter) |
|
2254 { |
|
2255 struct e1000_hw *hw = &adapter->hw; |
|
2256 |
|
2257 if (adapter->msix_entries) { |
|
2258 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); |
|
2259 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); |
|
2260 } else if (hw->mac.type == e1000_pch_lpt) { |
|
2261 ew32(IMS, IMS_ENABLE_MASK | E1000_IMS_ECCER); |
|
2262 } else { |
|
2263 ew32(IMS, IMS_ENABLE_MASK); |
|
2264 } |
|
2265 e1e_flush(); |
|
2266 } |
|
2267 |
|
2268 /** |
|
2269 * e1000e_get_hw_control - get control of the h/w from f/w |
|
2270 * @adapter: address of board private structure |
|
2271 * |
|
2272 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2273 * For ASF and Pass Through versions of f/w this means that |
|
2274 * the driver is loaded. For AMT version (only with 82573) |
|
2275 * of the f/w this means that the network i/f is open. |
|
2276 **/ |
|
2277 void e1000e_get_hw_control(struct e1000_adapter *adapter) |
|
2278 { |
|
2279 struct e1000_hw *hw = &adapter->hw; |
|
2280 u32 ctrl_ext; |
|
2281 u32 swsm; |
|
2282 |
|
2283 /* Let firmware know the driver has taken over */ |
|
2284 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2285 swsm = er32(SWSM); |
|
2286 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
|
2287 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2288 ctrl_ext = er32(CTRL_EXT); |
|
2289 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
2290 } |
|
2291 } |
|
2292 |
|
2293 /** |
|
2294 * e1000e_release_hw_control - release control of the h/w to f/w |
|
2295 * @adapter: address of board private structure |
|
2296 * |
|
2297 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2298 * For ASF and Pass Through versions of f/w this means that the |
|
2299 * driver is no longer loaded. For AMT version (only with 82573) i |
|
2300 * of the f/w this means that the network i/f is closed. |
|
2301 * |
|
2302 **/ |
|
2303 void e1000e_release_hw_control(struct e1000_adapter *adapter) |
|
2304 { |
|
2305 struct e1000_hw *hw = &adapter->hw; |
|
2306 u32 ctrl_ext; |
|
2307 u32 swsm; |
|
2308 |
|
2309 /* Let firmware taken over control of h/w */ |
|
2310 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2311 swsm = er32(SWSM); |
|
2312 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
|
2313 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2314 ctrl_ext = er32(CTRL_EXT); |
|
2315 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
|
2316 } |
|
2317 } |
|
2318 |
|
2319 /** |
|
2320 * e1000_alloc_ring_dma - allocate memory for a ring structure |
|
2321 **/ |
|
2322 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, |
|
2323 struct e1000_ring *ring) |
|
2324 { |
|
2325 struct pci_dev *pdev = adapter->pdev; |
|
2326 |
|
2327 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, |
|
2328 GFP_KERNEL); |
|
2329 if (!ring->desc) |
|
2330 return -ENOMEM; |
|
2331 |
|
2332 return 0; |
|
2333 } |
|
2334 |
|
2335 /** |
|
2336 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) |
|
2337 * @tx_ring: Tx descriptor ring |
|
2338 * |
|
2339 * Return 0 on success, negative on failure |
|
2340 **/ |
|
2341 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring) |
|
2342 { |
|
2343 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2344 int err = -ENOMEM, size; |
|
2345 |
|
2346 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2347 tx_ring->buffer_info = vzalloc(size); |
|
2348 if (!tx_ring->buffer_info) |
|
2349 goto err; |
|
2350 |
|
2351 /* round up to nearest 4K */ |
|
2352 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2353 tx_ring->size = ALIGN(tx_ring->size, 4096); |
|
2354 |
|
2355 err = e1000_alloc_ring_dma(adapter, tx_ring); |
|
2356 if (err) |
|
2357 goto err; |
|
2358 |
|
2359 tx_ring->next_to_use = 0; |
|
2360 tx_ring->next_to_clean = 0; |
|
2361 |
|
2362 return 0; |
|
2363 err: |
|
2364 vfree(tx_ring->buffer_info); |
|
2365 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2366 return err; |
|
2367 } |
|
2368 |
|
2369 /** |
|
2370 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) |
|
2371 * @rx_ring: Rx descriptor ring |
|
2372 * |
|
2373 * Returns 0 on success, negative on failure |
|
2374 **/ |
|
2375 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring) |
|
2376 { |
|
2377 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2378 struct e1000_buffer *buffer_info; |
|
2379 int i, size, desc_len, err = -ENOMEM; |
|
2380 |
|
2381 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2382 rx_ring->buffer_info = vzalloc(size); |
|
2383 if (!rx_ring->buffer_info) |
|
2384 goto err; |
|
2385 |
|
2386 for (i = 0; i < rx_ring->count; i++) { |
|
2387 buffer_info = &rx_ring->buffer_info[i]; |
|
2388 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, |
|
2389 sizeof(struct e1000_ps_page), |
|
2390 GFP_KERNEL); |
|
2391 if (!buffer_info->ps_pages) |
|
2392 goto err_pages; |
|
2393 } |
|
2394 |
|
2395 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
2396 |
|
2397 /* Round up to nearest 4K */ |
|
2398 rx_ring->size = rx_ring->count * desc_len; |
|
2399 rx_ring->size = ALIGN(rx_ring->size, 4096); |
|
2400 |
|
2401 err = e1000_alloc_ring_dma(adapter, rx_ring); |
|
2402 if (err) |
|
2403 goto err_pages; |
|
2404 |
|
2405 rx_ring->next_to_clean = 0; |
|
2406 rx_ring->next_to_use = 0; |
|
2407 rx_ring->rx_skb_top = NULL; |
|
2408 |
|
2409 return 0; |
|
2410 |
|
2411 err_pages: |
|
2412 for (i = 0; i < rx_ring->count; i++) { |
|
2413 buffer_info = &rx_ring->buffer_info[i]; |
|
2414 kfree(buffer_info->ps_pages); |
|
2415 } |
|
2416 err: |
|
2417 vfree(rx_ring->buffer_info); |
|
2418 e_err("Unable to allocate memory for the receive descriptor ring\n"); |
|
2419 return err; |
|
2420 } |
|
2421 |
|
2422 /** |
|
2423 * e1000_clean_tx_ring - Free Tx Buffers |
|
2424 * @tx_ring: Tx descriptor ring |
|
2425 **/ |
|
2426 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring) |
|
2427 { |
|
2428 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2429 struct e1000_buffer *buffer_info; |
|
2430 unsigned long size; |
|
2431 unsigned int i; |
|
2432 |
|
2433 for (i = 0; i < tx_ring->count; i++) { |
|
2434 buffer_info = &tx_ring->buffer_info[i]; |
|
2435 e1000_put_txbuf(tx_ring, buffer_info); |
|
2436 } |
|
2437 |
|
2438 netdev_reset_queue(adapter->netdev); |
|
2439 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2440 memset(tx_ring->buffer_info, 0, size); |
|
2441 |
|
2442 memset(tx_ring->desc, 0, tx_ring->size); |
|
2443 |
|
2444 tx_ring->next_to_use = 0; |
|
2445 tx_ring->next_to_clean = 0; |
|
2446 |
|
2447 writel(0, tx_ring->head); |
|
2448 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
2449 e1000e_update_tdt_wa(tx_ring, 0); |
|
2450 else |
|
2451 writel(0, tx_ring->tail); |
|
2452 } |
|
2453 |
|
2454 /** |
|
2455 * e1000e_free_tx_resources - Free Tx Resources per Queue |
|
2456 * @tx_ring: Tx descriptor ring |
|
2457 * |
|
2458 * Free all transmit software resources |
|
2459 **/ |
|
2460 void e1000e_free_tx_resources(struct e1000_ring *tx_ring) |
|
2461 { |
|
2462 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2463 struct pci_dev *pdev = adapter->pdev; |
|
2464 |
|
2465 e1000_clean_tx_ring(tx_ring); |
|
2466 |
|
2467 vfree(tx_ring->buffer_info); |
|
2468 tx_ring->buffer_info = NULL; |
|
2469 |
|
2470 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
2471 tx_ring->dma); |
|
2472 tx_ring->desc = NULL; |
|
2473 } |
|
2474 |
|
2475 /** |
|
2476 * e1000e_free_rx_resources - Free Rx Resources |
|
2477 * @rx_ring: Rx descriptor ring |
|
2478 * |
|
2479 * Free all receive software resources |
|
2480 **/ |
|
2481 void e1000e_free_rx_resources(struct e1000_ring *rx_ring) |
|
2482 { |
|
2483 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2484 struct pci_dev *pdev = adapter->pdev; |
|
2485 int i; |
|
2486 |
|
2487 e1000_clean_rx_ring(rx_ring); |
|
2488 |
|
2489 for (i = 0; i < rx_ring->count; i++) |
|
2490 kfree(rx_ring->buffer_info[i].ps_pages); |
|
2491 |
|
2492 vfree(rx_ring->buffer_info); |
|
2493 rx_ring->buffer_info = NULL; |
|
2494 |
|
2495 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2496 rx_ring->dma); |
|
2497 rx_ring->desc = NULL; |
|
2498 } |
|
2499 |
|
2500 /** |
|
2501 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2502 * @adapter: pointer to adapter |
|
2503 * @itr_setting: current adapter->itr |
|
2504 * @packets: the number of packets during this measurement interval |
|
2505 * @bytes: the number of bytes during this measurement interval |
|
2506 * |
|
2507 * Stores a new ITR value based on packets and byte |
|
2508 * counts during the last interrupt. The advantage of per interrupt |
|
2509 * computation is faster updates and more accurate ITR for the current |
|
2510 * traffic pattern. Constants in this function were computed |
|
2511 * based on theoretical maximum wire speed and thresholds were set based |
|
2512 * on testing data as well as attempting to minimize response time |
|
2513 * while increasing bulk throughput. This functionality is controlled |
|
2514 * by the InterruptThrottleRate module parameter. |
|
2515 **/ |
|
2516 static unsigned int e1000_update_itr(u16 itr_setting, int packets, int bytes) |
|
2517 { |
|
2518 unsigned int retval = itr_setting; |
|
2519 |
|
2520 if (packets == 0) |
|
2521 return itr_setting; |
|
2522 |
|
2523 switch (itr_setting) { |
|
2524 case lowest_latency: |
|
2525 /* handle TSO and jumbo frames */ |
|
2526 if (bytes / packets > 8000) |
|
2527 retval = bulk_latency; |
|
2528 else if ((packets < 5) && (bytes > 512)) |
|
2529 retval = low_latency; |
|
2530 break; |
|
2531 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2532 if (bytes > 10000) { |
|
2533 /* this if handles the TSO accounting */ |
|
2534 if (bytes / packets > 8000) |
|
2535 retval = bulk_latency; |
|
2536 else if ((packets < 10) || ((bytes / packets) > 1200)) |
|
2537 retval = bulk_latency; |
|
2538 else if ((packets > 35)) |
|
2539 retval = lowest_latency; |
|
2540 } else if (bytes / packets > 2000) { |
|
2541 retval = bulk_latency; |
|
2542 } else if (packets <= 2 && bytes < 512) { |
|
2543 retval = lowest_latency; |
|
2544 } |
|
2545 break; |
|
2546 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2547 if (bytes > 25000) { |
|
2548 if (packets > 35) |
|
2549 retval = low_latency; |
|
2550 } else if (bytes < 6000) { |
|
2551 retval = low_latency; |
|
2552 } |
|
2553 break; |
|
2554 } |
|
2555 |
|
2556 return retval; |
|
2557 } |
|
2558 |
|
2559 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2560 { |
|
2561 u16 current_itr; |
|
2562 u32 new_itr = adapter->itr; |
|
2563 |
|
2564 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2565 if (adapter->link_speed != SPEED_1000) { |
|
2566 current_itr = 0; |
|
2567 new_itr = 4000; |
|
2568 goto set_itr_now; |
|
2569 } |
|
2570 |
|
2571 if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
2572 new_itr = 0; |
|
2573 goto set_itr_now; |
|
2574 } |
|
2575 |
|
2576 adapter->tx_itr = e1000_update_itr(adapter->tx_itr, |
|
2577 adapter->total_tx_packets, |
|
2578 adapter->total_tx_bytes); |
|
2579 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2580 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2581 adapter->tx_itr = low_latency; |
|
2582 |
|
2583 adapter->rx_itr = e1000_update_itr(adapter->rx_itr, |
|
2584 adapter->total_rx_packets, |
|
2585 adapter->total_rx_bytes); |
|
2586 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2587 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2588 adapter->rx_itr = low_latency; |
|
2589 |
|
2590 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2591 |
|
2592 /* counts and packets in update_itr are dependent on these numbers */ |
|
2593 switch (current_itr) { |
|
2594 case lowest_latency: |
|
2595 new_itr = 70000; |
|
2596 break; |
|
2597 case low_latency: |
|
2598 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2599 break; |
|
2600 case bulk_latency: |
|
2601 new_itr = 4000; |
|
2602 break; |
|
2603 default: |
|
2604 break; |
|
2605 } |
|
2606 |
|
2607 set_itr_now: |
|
2608 if (new_itr != adapter->itr) { |
|
2609 /* this attempts to bias the interrupt rate towards Bulk |
|
2610 * by adding intermediate steps when interrupt rate is |
|
2611 * increasing |
|
2612 */ |
|
2613 new_itr = new_itr > adapter->itr ? |
|
2614 min(adapter->itr + (new_itr >> 2), new_itr) : new_itr; |
|
2615 adapter->itr = new_itr; |
|
2616 adapter->rx_ring->itr_val = new_itr; |
|
2617 if (adapter->msix_entries) |
|
2618 adapter->rx_ring->set_itr = 1; |
|
2619 else |
|
2620 e1000e_write_itr(adapter, new_itr); |
|
2621 } |
|
2622 } |
|
2623 |
|
2624 /** |
|
2625 * e1000e_write_itr - write the ITR value to the appropriate registers |
|
2626 * @adapter: address of board private structure |
|
2627 * @itr: new ITR value to program |
|
2628 * |
|
2629 * e1000e_write_itr determines if the adapter is in MSI-X mode |
|
2630 * and, if so, writes the EITR registers with the ITR value. |
|
2631 * Otherwise, it writes the ITR value into the ITR register. |
|
2632 **/ |
|
2633 void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr) |
|
2634 { |
|
2635 struct e1000_hw *hw = &adapter->hw; |
|
2636 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0; |
|
2637 |
|
2638 if (adapter->msix_entries) { |
|
2639 int vector; |
|
2640 |
|
2641 for (vector = 0; vector < adapter->num_vectors; vector++) |
|
2642 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector)); |
|
2643 } else { |
|
2644 ew32(ITR, new_itr); |
|
2645 } |
|
2646 } |
|
2647 |
|
2648 /** |
|
2649 * e1000_alloc_queues - Allocate memory for all rings |
|
2650 * @adapter: board private structure to initialize |
|
2651 **/ |
|
2652 static int e1000_alloc_queues(struct e1000_adapter *adapter) |
|
2653 { |
|
2654 int size = sizeof(struct e1000_ring); |
|
2655 |
|
2656 adapter->tx_ring = kzalloc(size, GFP_KERNEL); |
|
2657 if (!adapter->tx_ring) |
|
2658 goto err; |
|
2659 adapter->tx_ring->count = adapter->tx_ring_count; |
|
2660 adapter->tx_ring->adapter = adapter; |
|
2661 |
|
2662 adapter->rx_ring = kzalloc(size, GFP_KERNEL); |
|
2663 if (!adapter->rx_ring) |
|
2664 goto err; |
|
2665 adapter->rx_ring->count = adapter->rx_ring_count; |
|
2666 adapter->rx_ring->adapter = adapter; |
|
2667 |
|
2668 return 0; |
|
2669 err: |
|
2670 e_err("Unable to allocate memory for queues\n"); |
|
2671 kfree(adapter->rx_ring); |
|
2672 kfree(adapter->tx_ring); |
|
2673 return -ENOMEM; |
|
2674 } |
|
2675 |
|
2676 /** |
|
2677 * e1000e_poll - NAPI Rx polling callback |
|
2678 * @napi: struct associated with this polling callback |
|
2679 * @weight: number of packets driver is allowed to process this poll |
|
2680 **/ |
|
2681 static int e1000e_poll(struct napi_struct *napi, int weight) |
|
2682 { |
|
2683 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, |
|
2684 napi); |
|
2685 struct e1000_hw *hw = &adapter->hw; |
|
2686 struct net_device *poll_dev = adapter->netdev; |
|
2687 int tx_cleaned = 1, work_done = 0; |
|
2688 |
|
2689 adapter = netdev_priv(poll_dev); |
|
2690 |
|
2691 if (!adapter->msix_entries || |
|
2692 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) |
|
2693 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring); |
|
2694 |
|
2695 adapter->clean_rx(adapter->rx_ring, &work_done, weight); |
|
2696 |
|
2697 if (!tx_cleaned) |
|
2698 work_done = weight; |
|
2699 |
|
2700 /* If weight not fully consumed, exit the polling mode */ |
|
2701 if (work_done < weight) { |
|
2702 if (adapter->itr_setting & 3) |
|
2703 e1000_set_itr(adapter); |
|
2704 napi_complete(napi); |
|
2705 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
2706 if (adapter->msix_entries) |
|
2707 ew32(IMS, adapter->rx_ring->ims_val); |
|
2708 else |
|
2709 e1000_irq_enable(adapter); |
|
2710 } |
|
2711 } |
|
2712 |
|
2713 return work_done; |
|
2714 } |
|
2715 |
|
2716 static int e1000_vlan_rx_add_vid(struct net_device *netdev, |
|
2717 __always_unused __be16 proto, u16 vid) |
|
2718 { |
|
2719 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2720 struct e1000_hw *hw = &adapter->hw; |
|
2721 u32 vfta, index; |
|
2722 |
|
2723 /* don't update vlan cookie if already programmed */ |
|
2724 if ((adapter->hw.mng_cookie.status & |
|
2725 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2726 (vid == adapter->mng_vlan_id)) |
|
2727 return 0; |
|
2728 |
|
2729 /* add VID to filter table */ |
|
2730 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2731 index = (vid >> 5) & 0x7F; |
|
2732 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2733 vfta |= (1 << (vid & 0x1F)); |
|
2734 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2735 } |
|
2736 |
|
2737 set_bit(vid, adapter->active_vlans); |
|
2738 |
|
2739 return 0; |
|
2740 } |
|
2741 |
|
2742 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, |
|
2743 __always_unused __be16 proto, u16 vid) |
|
2744 { |
|
2745 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2746 struct e1000_hw *hw = &adapter->hw; |
|
2747 u32 vfta, index; |
|
2748 |
|
2749 if ((adapter->hw.mng_cookie.status & |
|
2750 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2751 (vid == adapter->mng_vlan_id)) { |
|
2752 /* release control to f/w */ |
|
2753 e1000e_release_hw_control(adapter); |
|
2754 return 0; |
|
2755 } |
|
2756 |
|
2757 /* remove VID from filter table */ |
|
2758 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2759 index = (vid >> 5) & 0x7F; |
|
2760 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2761 vfta &= ~(1 << (vid & 0x1F)); |
|
2762 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2763 } |
|
2764 |
|
2765 clear_bit(vid, adapter->active_vlans); |
|
2766 |
|
2767 return 0; |
|
2768 } |
|
2769 |
|
2770 /** |
|
2771 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering |
|
2772 * @adapter: board private structure to initialize |
|
2773 **/ |
|
2774 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) |
|
2775 { |
|
2776 struct net_device *netdev = adapter->netdev; |
|
2777 struct e1000_hw *hw = &adapter->hw; |
|
2778 u32 rctl; |
|
2779 |
|
2780 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2781 /* disable VLAN receive filtering */ |
|
2782 rctl = er32(RCTL); |
|
2783 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); |
|
2784 ew32(RCTL, rctl); |
|
2785 |
|
2786 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
2787 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
|
2788 adapter->mng_vlan_id); |
|
2789 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2790 } |
|
2791 } |
|
2792 } |
|
2793 |
|
2794 /** |
|
2795 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering |
|
2796 * @adapter: board private structure to initialize |
|
2797 **/ |
|
2798 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) |
|
2799 { |
|
2800 struct e1000_hw *hw = &adapter->hw; |
|
2801 u32 rctl; |
|
2802 |
|
2803 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2804 /* enable VLAN receive filtering */ |
|
2805 rctl = er32(RCTL); |
|
2806 rctl |= E1000_RCTL_VFE; |
|
2807 rctl &= ~E1000_RCTL_CFIEN; |
|
2808 ew32(RCTL, rctl); |
|
2809 } |
|
2810 } |
|
2811 |
|
2812 /** |
|
2813 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping |
|
2814 * @adapter: board private structure to initialize |
|
2815 **/ |
|
2816 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) |
|
2817 { |
|
2818 struct e1000_hw *hw = &adapter->hw; |
|
2819 u32 ctrl; |
|
2820 |
|
2821 /* disable VLAN tag insert/strip */ |
|
2822 ctrl = er32(CTRL); |
|
2823 ctrl &= ~E1000_CTRL_VME; |
|
2824 ew32(CTRL, ctrl); |
|
2825 } |
|
2826 |
|
2827 /** |
|
2828 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping |
|
2829 * @adapter: board private structure to initialize |
|
2830 **/ |
|
2831 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) |
|
2832 { |
|
2833 struct e1000_hw *hw = &adapter->hw; |
|
2834 u32 ctrl; |
|
2835 |
|
2836 /* enable VLAN tag insert/strip */ |
|
2837 ctrl = er32(CTRL); |
|
2838 ctrl |= E1000_CTRL_VME; |
|
2839 ew32(CTRL, ctrl); |
|
2840 } |
|
2841 |
|
2842 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
|
2843 { |
|
2844 struct net_device *netdev = adapter->netdev; |
|
2845 u16 vid = adapter->hw.mng_cookie.vlan_id; |
|
2846 u16 old_vid = adapter->mng_vlan_id; |
|
2847 |
|
2848 if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
|
2849 e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid); |
|
2850 adapter->mng_vlan_id = vid; |
|
2851 } |
|
2852 |
|
2853 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
|
2854 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), old_vid); |
|
2855 } |
|
2856 |
|
2857 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
2858 { |
|
2859 u16 vid; |
|
2860 |
|
2861 e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); |
|
2862 |
|
2863 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
|
2864 e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
|
2865 } |
|
2866 |
|
2867 static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
|
2868 { |
|
2869 struct e1000_hw *hw = &adapter->hw; |
|
2870 u32 manc, manc2h, mdef, i, j; |
|
2871 |
|
2872 if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) |
|
2873 return; |
|
2874 |
|
2875 manc = er32(MANC); |
|
2876 |
|
2877 /* enable receiving management packets to the host. this will probably |
|
2878 * generate destination unreachable messages from the host OS, but |
|
2879 * the packets will be handled on SMBUS |
|
2880 */ |
|
2881 manc |= E1000_MANC_EN_MNG2HOST; |
|
2882 manc2h = er32(MANC2H); |
|
2883 |
|
2884 switch (hw->mac.type) { |
|
2885 default: |
|
2886 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); |
|
2887 break; |
|
2888 case e1000_82574: |
|
2889 case e1000_82583: |
|
2890 /* Check if IPMI pass-through decision filter already exists; |
|
2891 * if so, enable it. |
|
2892 */ |
|
2893 for (i = 0, j = 0; i < 8; i++) { |
|
2894 mdef = er32(MDEF(i)); |
|
2895 |
|
2896 /* Ignore filters with anything other than IPMI ports */ |
|
2897 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2898 continue; |
|
2899 |
|
2900 /* Enable this decision filter in MANC2H */ |
|
2901 if (mdef) |
|
2902 manc2h |= (1 << i); |
|
2903 |
|
2904 j |= mdef; |
|
2905 } |
|
2906 |
|
2907 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2908 break; |
|
2909 |
|
2910 /* Create new decision filter in an empty filter */ |
|
2911 for (i = 0, j = 0; i < 8; i++) |
|
2912 if (er32(MDEF(i)) == 0) { |
|
2913 ew32(MDEF(i), (E1000_MDEF_PORT_623 | |
|
2914 E1000_MDEF_PORT_664)); |
|
2915 manc2h |= (1 << 1); |
|
2916 j++; |
|
2917 break; |
|
2918 } |
|
2919 |
|
2920 if (!j) |
|
2921 e_warn("Unable to create IPMI pass-through filter\n"); |
|
2922 break; |
|
2923 } |
|
2924 |
|
2925 ew32(MANC2H, manc2h); |
|
2926 ew32(MANC, manc); |
|
2927 } |
|
2928 |
|
2929 /** |
|
2930 * e1000_configure_tx - Configure Transmit Unit after Reset |
|
2931 * @adapter: board private structure |
|
2932 * |
|
2933 * Configure the Tx unit of the MAC after a reset. |
|
2934 **/ |
|
2935 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
2936 { |
|
2937 struct e1000_hw *hw = &adapter->hw; |
|
2938 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2939 u64 tdba; |
|
2940 u32 tdlen, tctl, tarc; |
|
2941 |
|
2942 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
2943 tdba = tx_ring->dma; |
|
2944 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2945 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
|
2946 ew32(TDBAH(0), (tdba >> 32)); |
|
2947 ew32(TDLEN(0), tdlen); |
|
2948 ew32(TDH(0), 0); |
|
2949 ew32(TDT(0), 0); |
|
2950 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0); |
|
2951 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0); |
|
2952 |
|
2953 /* Set the Tx Interrupt Delay register */ |
|
2954 ew32(TIDV, adapter->tx_int_delay); |
|
2955 /* Tx irq moderation */ |
|
2956 ew32(TADV, adapter->tx_abs_int_delay); |
|
2957 |
|
2958 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
2959 u32 txdctl = er32(TXDCTL(0)); |
|
2960 |
|
2961 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
|
2962 E1000_TXDCTL_WTHRESH); |
|
2963 /* set up some performance related parameters to encourage the |
|
2964 * hardware to use the bus more efficiently in bursts, depends |
|
2965 * on the tx_int_delay to be enabled, |
|
2966 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls |
|
2967 * hthresh = 1 ==> prefetch when one or more available |
|
2968 * pthresh = 0x1f ==> prefetch if internal cache 31 or less |
|
2969 * BEWARE: this seems to work but should be considered first if |
|
2970 * there are Tx hangs or other Tx related bugs |
|
2971 */ |
|
2972 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; |
|
2973 ew32(TXDCTL(0), txdctl); |
|
2974 } |
|
2975 /* erratum work around: set txdctl the same for both queues */ |
|
2976 ew32(TXDCTL(1), er32(TXDCTL(0))); |
|
2977 |
|
2978 /* Program the Transmit Control Register */ |
|
2979 tctl = er32(TCTL); |
|
2980 tctl &= ~E1000_TCTL_CT; |
|
2981 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
2982 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
2983 |
|
2984 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
|
2985 tarc = er32(TARC(0)); |
|
2986 /* set the speed mode bit, we'll clear it if we're not at |
|
2987 * gigabit link later |
|
2988 */ |
|
2989 #define SPEED_MODE_BIT (1 << 21) |
|
2990 tarc |= SPEED_MODE_BIT; |
|
2991 ew32(TARC(0), tarc); |
|
2992 } |
|
2993 |
|
2994 /* errata: program both queues to unweighted RR */ |
|
2995 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { |
|
2996 tarc = er32(TARC(0)); |
|
2997 tarc |= 1; |
|
2998 ew32(TARC(0), tarc); |
|
2999 tarc = er32(TARC(1)); |
|
3000 tarc |= 1; |
|
3001 ew32(TARC(1), tarc); |
|
3002 } |
|
3003 |
|
3004 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
3005 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
3006 |
|
3007 /* only set IDE if we are delaying interrupts using the timers */ |
|
3008 if (adapter->tx_int_delay) |
|
3009 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
3010 |
|
3011 /* enable Report Status bit */ |
|
3012 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
3013 |
|
3014 ew32(TCTL, tctl); |
|
3015 |
|
3016 hw->mac.ops.config_collision_dist(hw); |
|
3017 } |
|
3018 |
|
3019 /** |
|
3020 * e1000_setup_rctl - configure the receive control registers |
|
3021 * @adapter: Board private structure |
|
3022 **/ |
|
3023 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
3024 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
3025 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
3026 { |
|
3027 struct e1000_hw *hw = &adapter->hw; |
|
3028 u32 rctl, rfctl; |
|
3029 u32 pages = 0; |
|
3030 |
|
3031 /* Workaround Si errata on PCHx - configure jumbo frame flow. |
|
3032 * If jumbo frames not set, program related MAC/PHY registers |
|
3033 * to h/w defaults |
|
3034 */ |
|
3035 if (hw->mac.type >= e1000_pch2lan) { |
|
3036 s32 ret_val; |
|
3037 |
|
3038 if (adapter->netdev->mtu > ETH_DATA_LEN) |
|
3039 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); |
|
3040 else |
|
3041 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); |
|
3042 |
|
3043 if (ret_val) |
|
3044 e_dbg("failed to enable|disable jumbo frame workaround mode\n"); |
|
3045 } |
|
3046 |
|
3047 /* Program MC offset vector base */ |
|
3048 rctl = er32(RCTL); |
|
3049 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
3050 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
3051 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
3052 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
3053 |
|
3054 /* Do not Store bad packets */ |
|
3055 rctl &= ~E1000_RCTL_SBP; |
|
3056 |
|
3057 /* Enable Long Packet receive */ |
|
3058 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
3059 rctl &= ~E1000_RCTL_LPE; |
|
3060 else |
|
3061 rctl |= E1000_RCTL_LPE; |
|
3062 |
|
3063 /* Some systems expect that the CRC is included in SMBUS traffic. The |
|
3064 * hardware strips the CRC before sending to both SMBUS (BMC) and to |
|
3065 * host memory when this is enabled |
|
3066 */ |
|
3067 if (adapter->flags2 & FLAG2_CRC_STRIPPING) |
|
3068 rctl |= E1000_RCTL_SECRC; |
|
3069 |
|
3070 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
|
3071 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { |
|
3072 u16 phy_data; |
|
3073 |
|
3074 e1e_rphy(hw, PHY_REG(770, 26), &phy_data); |
|
3075 phy_data &= 0xfff8; |
|
3076 phy_data |= (1 << 2); |
|
3077 e1e_wphy(hw, PHY_REG(770, 26), phy_data); |
|
3078 |
|
3079 e1e_rphy(hw, 22, &phy_data); |
|
3080 phy_data &= 0x0fff; |
|
3081 phy_data |= (1 << 14); |
|
3082 e1e_wphy(hw, 0x10, 0x2823); |
|
3083 e1e_wphy(hw, 0x11, 0x0003); |
|
3084 e1e_wphy(hw, 22, phy_data); |
|
3085 } |
|
3086 |
|
3087 /* Setup buffer sizes */ |
|
3088 rctl &= ~E1000_RCTL_SZ_4096; |
|
3089 rctl |= E1000_RCTL_BSEX; |
|
3090 switch (adapter->rx_buffer_len) { |
|
3091 case 2048: |
|
3092 default: |
|
3093 rctl |= E1000_RCTL_SZ_2048; |
|
3094 rctl &= ~E1000_RCTL_BSEX; |
|
3095 break; |
|
3096 case 4096: |
|
3097 rctl |= E1000_RCTL_SZ_4096; |
|
3098 break; |
|
3099 case 8192: |
|
3100 rctl |= E1000_RCTL_SZ_8192; |
|
3101 break; |
|
3102 case 16384: |
|
3103 rctl |= E1000_RCTL_SZ_16384; |
|
3104 break; |
|
3105 } |
|
3106 |
|
3107 /* Enable Extended Status in all Receive Descriptors */ |
|
3108 rfctl = er32(RFCTL); |
|
3109 rfctl |= E1000_RFCTL_EXTEN; |
|
3110 ew32(RFCTL, rfctl); |
|
3111 |
|
3112 /* 82571 and greater support packet-split where the protocol |
|
3113 * header is placed in skb->data and the packet data is |
|
3114 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
3115 * In the case of a non-split, skb->data is linearly filled, |
|
3116 * followed by the page buffers. Therefore, skb->data is |
|
3117 * sized to hold the largest protocol header. |
|
3118 * |
|
3119 * allocations using alloc_page take too long for regular MTU |
|
3120 * so only enable packet split for jumbo frames |
|
3121 * |
|
3122 * Using pages when the page size is greater than 16k wastes |
|
3123 * a lot of memory, since we allocate 3 pages at all times |
|
3124 * per packet. |
|
3125 */ |
|
3126 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
3127 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
|
3128 adapter->rx_ps_pages = pages; |
|
3129 else |
|
3130 adapter->rx_ps_pages = 0; |
|
3131 |
|
3132 if (adapter->rx_ps_pages) { |
|
3133 u32 psrctl = 0; |
|
3134 |
|
3135 /* Enable Packet split descriptors */ |
|
3136 rctl |= E1000_RCTL_DTYP_PS; |
|
3137 |
|
3138 psrctl |= adapter->rx_ps_bsize0 >> E1000_PSRCTL_BSIZE0_SHIFT; |
|
3139 |
|
3140 switch (adapter->rx_ps_pages) { |
|
3141 case 3: |
|
3142 psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE3_SHIFT; |
|
3143 /* fall-through */ |
|
3144 case 2: |
|
3145 psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE2_SHIFT; |
|
3146 /* fall-through */ |
|
3147 case 1: |
|
3148 psrctl |= PAGE_SIZE >> E1000_PSRCTL_BSIZE1_SHIFT; |
|
3149 break; |
|
3150 } |
|
3151 |
|
3152 ew32(PSRCTL, psrctl); |
|
3153 } |
|
3154 |
|
3155 /* This is useful for sniffing bad packets. */ |
|
3156 if (adapter->netdev->features & NETIF_F_RXALL) { |
|
3157 /* UPE and MPE will be handled by normal PROMISC logic |
|
3158 * in e1000e_set_rx_mode |
|
3159 */ |
|
3160 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
|
3161 E1000_RCTL_BAM | /* RX All Bcast Pkts */ |
|
3162 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ |
|
3163 |
|
3164 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ |
|
3165 E1000_RCTL_DPF | /* Allow filtered pause */ |
|
3166 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ |
|
3167 /* Do not mess with E1000_CTRL_VME, it affects transmit as well, |
|
3168 * and that breaks VLANs. |
|
3169 */ |
|
3170 } |
|
3171 |
|
3172 ew32(RCTL, rctl); |
|
3173 /* just started the receive unit, no need to restart */ |
|
3174 adapter->flags &= ~FLAG_RESTART_NOW; |
|
3175 } |
|
3176 |
|
3177 /** |
|
3178 * e1000_configure_rx - Configure Receive Unit after Reset |
|
3179 * @adapter: board private structure |
|
3180 * |
|
3181 * Configure the Rx unit of the MAC after a reset. |
|
3182 **/ |
|
3183 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
3184 { |
|
3185 struct e1000_hw *hw = &adapter->hw; |
|
3186 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3187 u64 rdba; |
|
3188 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
3189 |
|
3190 if (adapter->rx_ps_pages) { |
|
3191 /* this is a 32 byte descriptor */ |
|
3192 rdlen = rx_ring->count * |
|
3193 sizeof(union e1000_rx_desc_packet_split); |
|
3194 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
3195 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
3196 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3197 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3198 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
3199 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
3200 } else { |
|
3201 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3202 adapter->clean_rx = e1000_clean_rx_irq; |
|
3203 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
3204 } |
|
3205 |
|
3206 /* disable receives while setting up the descriptors */ |
|
3207 rctl = er32(RCTL); |
|
3208 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3209 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3210 e1e_flush(); |
|
3211 usleep_range(10000, 20000); |
|
3212 |
|
3213 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
3214 /* set the writeback threshold (only takes effect if the RDTR |
|
3215 * is set). set GRAN=1 and write back up to 0x4 worth, and |
|
3216 * enable prefetching of 0x20 Rx descriptors |
|
3217 * granularity = 01 |
|
3218 * wthresh = 04, |
|
3219 * hthresh = 04, |
|
3220 * pthresh = 0x20 |
|
3221 */ |
|
3222 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3223 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3224 |
|
3225 /* override the delay timers for enabling bursting, only if |
|
3226 * the value was not set by the user via module options |
|
3227 */ |
|
3228 if (adapter->rx_int_delay == DEFAULT_RDTR) |
|
3229 adapter->rx_int_delay = BURST_RDTR; |
|
3230 if (adapter->rx_abs_int_delay == DEFAULT_RADV) |
|
3231 adapter->rx_abs_int_delay = BURST_RADV; |
|
3232 } |
|
3233 |
|
3234 /* set the Receive Delay Timer Register */ |
|
3235 ew32(RDTR, adapter->rx_int_delay); |
|
3236 |
|
3237 /* irq moderation */ |
|
3238 ew32(RADV, adapter->rx_abs_int_delay); |
|
3239 if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
|
3240 e1000e_write_itr(adapter, adapter->itr); |
|
3241 |
|
3242 ctrl_ext = er32(CTRL_EXT); |
|
3243 /* Auto-Mask interrupts upon ICR access */ |
|
3244 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
3245 ew32(IAM, 0xffffffff); |
|
3246 ew32(CTRL_EXT, ctrl_ext); |
|
3247 e1e_flush(); |
|
3248 |
|
3249 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
3250 * the Base and Length of the Rx Descriptor Ring |
|
3251 */ |
|
3252 rdba = rx_ring->dma; |
|
3253 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
|
3254 ew32(RDBAH(0), (rdba >> 32)); |
|
3255 ew32(RDLEN(0), rdlen); |
|
3256 ew32(RDH(0), 0); |
|
3257 ew32(RDT(0), 0); |
|
3258 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0); |
|
3259 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0); |
|
3260 |
|
3261 /* Enable Receive Checksum Offload for TCP and UDP */ |
|
3262 rxcsum = er32(RXCSUM); |
|
3263 if (adapter->netdev->features & NETIF_F_RXCSUM) |
|
3264 rxcsum |= E1000_RXCSUM_TUOFL; |
|
3265 else |
|
3266 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
3267 ew32(RXCSUM, rxcsum); |
|
3268 |
|
3269 /* With jumbo frames, excessive C-state transition latencies result |
|
3270 * in dropped transactions. |
|
3271 */ |
|
3272 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3273 u32 lat = |
|
3274 ((er32(PBA) & E1000_PBA_RXA_MASK) * 1024 - |
|
3275 adapter->max_frame_size) * 8 / 1000; |
|
3276 |
|
3277 if (adapter->flags & FLAG_IS_ICH) { |
|
3278 u32 rxdctl = er32(RXDCTL(0)); |
|
3279 |
|
3280 ew32(RXDCTL(0), rxdctl | 0x3); |
|
3281 } |
|
3282 |
|
3283 pm_qos_update_request(&adapter->netdev->pm_qos_req, lat); |
|
3284 } else { |
|
3285 pm_qos_update_request(&adapter->netdev->pm_qos_req, |
|
3286 PM_QOS_DEFAULT_VALUE); |
|
3287 } |
|
3288 |
|
3289 /* Enable Receives */ |
|
3290 ew32(RCTL, rctl); |
|
3291 } |
|
3292 |
|
3293 /** |
|
3294 * e1000e_write_mc_addr_list - write multicast addresses to MTA |
|
3295 * @netdev: network interface device structure |
|
3296 * |
|
3297 * Writes multicast address list to the MTA hash table. |
|
3298 * Returns: -ENOMEM on failure |
|
3299 * 0 on no addresses written |
|
3300 * X on writing X addresses to MTA |
|
3301 */ |
|
3302 static int e1000e_write_mc_addr_list(struct net_device *netdev) |
|
3303 { |
|
3304 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3305 struct e1000_hw *hw = &adapter->hw; |
|
3306 struct netdev_hw_addr *ha; |
|
3307 u8 *mta_list; |
|
3308 int i; |
|
3309 |
|
3310 if (netdev_mc_empty(netdev)) { |
|
3311 /* nothing to program, so clear mc list */ |
|
3312 hw->mac.ops.update_mc_addr_list(hw, NULL, 0); |
|
3313 return 0; |
|
3314 } |
|
3315 |
|
3316 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); |
|
3317 if (!mta_list) |
|
3318 return -ENOMEM; |
|
3319 |
|
3320 /* update_mc_addr_list expects a packed array of only addresses. */ |
|
3321 i = 0; |
|
3322 netdev_for_each_mc_addr(ha, netdev) |
|
3323 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
|
3324 |
|
3325 hw->mac.ops.update_mc_addr_list(hw, mta_list, i); |
|
3326 kfree(mta_list); |
|
3327 |
|
3328 return netdev_mc_count(netdev); |
|
3329 } |
|
3330 |
|
3331 /** |
|
3332 * e1000e_write_uc_addr_list - write unicast addresses to RAR table |
|
3333 * @netdev: network interface device structure |
|
3334 * |
|
3335 * Writes unicast address list to the RAR table. |
|
3336 * Returns: -ENOMEM on failure/insufficient address space |
|
3337 * 0 on no addresses written |
|
3338 * X on writing X addresses to the RAR table |
|
3339 **/ |
|
3340 static int e1000e_write_uc_addr_list(struct net_device *netdev) |
|
3341 { |
|
3342 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3343 struct e1000_hw *hw = &adapter->hw; |
|
3344 unsigned int rar_entries; |
|
3345 int count = 0; |
|
3346 |
|
3347 rar_entries = hw->mac.ops.rar_get_count(hw); |
|
3348 |
|
3349 /* save a rar entry for our hardware address */ |
|
3350 rar_entries--; |
|
3351 |
|
3352 /* save a rar entry for the LAA workaround */ |
|
3353 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) |
|
3354 rar_entries--; |
|
3355 |
|
3356 /* return ENOMEM indicating insufficient memory for addresses */ |
|
3357 if (netdev_uc_count(netdev) > rar_entries) |
|
3358 return -ENOMEM; |
|
3359 |
|
3360 if (!netdev_uc_empty(netdev) && rar_entries) { |
|
3361 struct netdev_hw_addr *ha; |
|
3362 |
|
3363 /* write the addresses in reverse order to avoid write |
|
3364 * combining |
|
3365 */ |
|
3366 netdev_for_each_uc_addr(ha, netdev) { |
|
3367 int rval; |
|
3368 |
|
3369 if (!rar_entries) |
|
3370 break; |
|
3371 rval = hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); |
|
3372 if (rval < 0) |
|
3373 return -ENOMEM; |
|
3374 count++; |
|
3375 } |
|
3376 } |
|
3377 |
|
3378 /* zero out the remaining RAR entries not used above */ |
|
3379 for (; rar_entries > 0; rar_entries--) { |
|
3380 ew32(RAH(rar_entries), 0); |
|
3381 ew32(RAL(rar_entries), 0); |
|
3382 } |
|
3383 e1e_flush(); |
|
3384 |
|
3385 return count; |
|
3386 } |
|
3387 |
|
3388 /** |
|
3389 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set |
|
3390 * @netdev: network interface device structure |
|
3391 * |
|
3392 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast |
|
3393 * address list or the network interface flags are updated. This routine is |
|
3394 * responsible for configuring the hardware for proper unicast, multicast, |
|
3395 * promiscuous mode, and all-multi behavior. |
|
3396 **/ |
|
3397 static void e1000e_set_rx_mode(struct net_device *netdev) |
|
3398 { |
|
3399 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3400 struct e1000_hw *hw = &adapter->hw; |
|
3401 u32 rctl; |
|
3402 |
|
3403 if (pm_runtime_suspended(netdev->dev.parent)) |
|
3404 return; |
|
3405 |
|
3406 /* Check for Promiscuous and All Multicast modes */ |
|
3407 rctl = er32(RCTL); |
|
3408 |
|
3409 /* clear the affected bits */ |
|
3410 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3411 |
|
3412 if (netdev->flags & IFF_PROMISC) { |
|
3413 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3414 /* Do not hardware filter VLANs in promisc mode */ |
|
3415 e1000e_vlan_filter_disable(adapter); |
|
3416 } else { |
|
3417 int count; |
|
3418 |
|
3419 if (netdev->flags & IFF_ALLMULTI) { |
|
3420 rctl |= E1000_RCTL_MPE; |
|
3421 } else { |
|
3422 /* Write addresses to the MTA, if the attempt fails |
|
3423 * then we should just turn on promiscuous mode so |
|
3424 * that we can at least receive multicast traffic |
|
3425 */ |
|
3426 count = e1000e_write_mc_addr_list(netdev); |
|
3427 if (count < 0) |
|
3428 rctl |= E1000_RCTL_MPE; |
|
3429 } |
|
3430 e1000e_vlan_filter_enable(adapter); |
|
3431 /* Write addresses to available RAR registers, if there is not |
|
3432 * sufficient space to store all the addresses then enable |
|
3433 * unicast promiscuous mode |
|
3434 */ |
|
3435 count = e1000e_write_uc_addr_list(netdev); |
|
3436 if (count < 0) |
|
3437 rctl |= E1000_RCTL_UPE; |
|
3438 } |
|
3439 |
|
3440 ew32(RCTL, rctl); |
|
3441 |
|
3442 if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) |
|
3443 e1000e_vlan_strip_enable(adapter); |
|
3444 else |
|
3445 e1000e_vlan_strip_disable(adapter); |
|
3446 } |
|
3447 |
|
3448 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter) |
|
3449 { |
|
3450 struct e1000_hw *hw = &adapter->hw; |
|
3451 u32 mrqc, rxcsum; |
|
3452 int i; |
|
3453 static const u32 rsskey[10] = { |
|
3454 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0, |
|
3455 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe |
|
3456 }; |
|
3457 |
|
3458 /* Fill out hash function seed */ |
|
3459 for (i = 0; i < 10; i++) |
|
3460 ew32(RSSRK(i), rsskey[i]); |
|
3461 |
|
3462 /* Direct all traffic to queue 0 */ |
|
3463 for (i = 0; i < 32; i++) |
|
3464 ew32(RETA(i), 0); |
|
3465 |
|
3466 /* Disable raw packet checksumming so that RSS hash is placed in |
|
3467 * descriptor on writeback. |
|
3468 */ |
|
3469 rxcsum = er32(RXCSUM); |
|
3470 rxcsum |= E1000_RXCSUM_PCSD; |
|
3471 |
|
3472 ew32(RXCSUM, rxcsum); |
|
3473 |
|
3474 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 | |
|
3475 E1000_MRQC_RSS_FIELD_IPV4_TCP | |
|
3476 E1000_MRQC_RSS_FIELD_IPV6 | |
|
3477 E1000_MRQC_RSS_FIELD_IPV6_TCP | |
|
3478 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
|
3479 |
|
3480 ew32(MRQC, mrqc); |
|
3481 } |
|
3482 |
|
3483 /** |
|
3484 * e1000e_get_base_timinca - get default SYSTIM time increment attributes |
|
3485 * @adapter: board private structure |
|
3486 * @timinca: pointer to returned time increment attributes |
|
3487 * |
|
3488 * Get attributes for incrementing the System Time Register SYSTIML/H at |
|
3489 * the default base frequency, and set the cyclecounter shift value. |
|
3490 **/ |
|
3491 s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca) |
|
3492 { |
|
3493 struct e1000_hw *hw = &adapter->hw; |
|
3494 u32 incvalue, incperiod, shift; |
|
3495 |
|
3496 /* Make sure clock is enabled on I217 before checking the frequency */ |
|
3497 if ((hw->mac.type == e1000_pch_lpt) && |
|
3498 !(er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) && |
|
3499 !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_ENABLED)) { |
|
3500 u32 fextnvm7 = er32(FEXTNVM7); |
|
3501 |
|
3502 if (!(fextnvm7 & (1 << 0))) { |
|
3503 ew32(FEXTNVM7, fextnvm7 | (1 << 0)); |
|
3504 e1e_flush(); |
|
3505 } |
|
3506 } |
|
3507 |
|
3508 switch (hw->mac.type) { |
|
3509 case e1000_pch2lan: |
|
3510 case e1000_pch_lpt: |
|
3511 /* On I217, the clock frequency is 25MHz or 96MHz as |
|
3512 * indicated by the System Clock Frequency Indication |
|
3513 */ |
|
3514 if ((hw->mac.type != e1000_pch_lpt) || |
|
3515 (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_SYSCFI)) { |
|
3516 /* Stable 96MHz frequency */ |
|
3517 incperiod = INCPERIOD_96MHz; |
|
3518 incvalue = INCVALUE_96MHz; |
|
3519 shift = INCVALUE_SHIFT_96MHz; |
|
3520 adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHz; |
|
3521 break; |
|
3522 } |
|
3523 /* fall-through */ |
|
3524 case e1000_82574: |
|
3525 case e1000_82583: |
|
3526 /* Stable 25MHz frequency */ |
|
3527 incperiod = INCPERIOD_25MHz; |
|
3528 incvalue = INCVALUE_25MHz; |
|
3529 shift = INCVALUE_SHIFT_25MHz; |
|
3530 adapter->cc.shift = shift; |
|
3531 break; |
|
3532 default: |
|
3533 return -EINVAL; |
|
3534 } |
|
3535 |
|
3536 *timinca = ((incperiod << E1000_TIMINCA_INCPERIOD_SHIFT) | |
|
3537 ((incvalue << shift) & E1000_TIMINCA_INCVALUE_MASK)); |
|
3538 |
|
3539 return 0; |
|
3540 } |
|
3541 |
|
3542 /** |
|
3543 * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable |
|
3544 * @adapter: board private structure |
|
3545 * |
|
3546 * Outgoing time stamping can be enabled and disabled. Play nice and |
|
3547 * disable it when requested, although it shouldn't cause any overhead |
|
3548 * when no packet needs it. At most one packet in the queue may be |
|
3549 * marked for time stamping, otherwise it would be impossible to tell |
|
3550 * for sure to which packet the hardware time stamp belongs. |
|
3551 * |
|
3552 * Incoming time stamping has to be configured via the hardware filters. |
|
3553 * Not all combinations are supported, in particular event type has to be |
|
3554 * specified. Matching the kind of event packet is not supported, with the |
|
3555 * exception of "all V2 events regardless of level 2 or 4". |
|
3556 **/ |
|
3557 static int e1000e_config_hwtstamp(struct e1000_adapter *adapter, |
|
3558 struct hwtstamp_config *config) |
|
3559 { |
|
3560 struct e1000_hw *hw = &adapter->hw; |
|
3561 u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; |
|
3562 u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; |
|
3563 u32 rxmtrl = 0; |
|
3564 u16 rxudp = 0; |
|
3565 bool is_l4 = false; |
|
3566 bool is_l2 = false; |
|
3567 u32 regval; |
|
3568 s32 ret_val; |
|
3569 |
|
3570 if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP)) |
|
3571 return -EINVAL; |
|
3572 |
|
3573 /* flags reserved for future extensions - must be zero */ |
|
3574 if (config->flags) |
|
3575 return -EINVAL; |
|
3576 |
|
3577 switch (config->tx_type) { |
|
3578 case HWTSTAMP_TX_OFF: |
|
3579 tsync_tx_ctl = 0; |
|
3580 break; |
|
3581 case HWTSTAMP_TX_ON: |
|
3582 break; |
|
3583 default: |
|
3584 return -ERANGE; |
|
3585 } |
|
3586 |
|
3587 switch (config->rx_filter) { |
|
3588 case HWTSTAMP_FILTER_NONE: |
|
3589 tsync_rx_ctl = 0; |
|
3590 break; |
|
3591 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
|
3592 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
|
3593 rxmtrl = E1000_RXMTRL_PTP_V1_SYNC_MESSAGE; |
|
3594 is_l4 = true; |
|
3595 break; |
|
3596 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
|
3597 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
|
3598 rxmtrl = E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE; |
|
3599 is_l4 = true; |
|
3600 break; |
|
3601 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
|
3602 /* Also time stamps V2 L2 Path Delay Request/Response */ |
|
3603 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; |
|
3604 rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; |
|
3605 is_l2 = true; |
|
3606 break; |
|
3607 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
|
3608 /* Also time stamps V2 L2 Path Delay Request/Response. */ |
|
3609 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; |
|
3610 rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; |
|
3611 is_l2 = true; |
|
3612 break; |
|
3613 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
|
3614 /* Hardware cannot filter just V2 L4 Sync messages; |
|
3615 * fall-through to V2 (both L2 and L4) Sync. |
|
3616 */ |
|
3617 case HWTSTAMP_FILTER_PTP_V2_SYNC: |
|
3618 /* Also time stamps V2 Path Delay Request/Response. */ |
|
3619 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
|
3620 rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; |
|
3621 is_l2 = true; |
|
3622 is_l4 = true; |
|
3623 break; |
|
3624 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
|
3625 /* Hardware cannot filter just V2 L4 Delay Request messages; |
|
3626 * fall-through to V2 (both L2 and L4) Delay Request. |
|
3627 */ |
|
3628 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
|
3629 /* Also time stamps V2 Path Delay Request/Response. */ |
|
3630 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
|
3631 rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; |
|
3632 is_l2 = true; |
|
3633 is_l4 = true; |
|
3634 break; |
|
3635 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
|
3636 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: |
|
3637 /* Hardware cannot filter just V2 L4 or L2 Event messages; |
|
3638 * fall-through to all V2 (both L2 and L4) Events. |
|
3639 */ |
|
3640 case HWTSTAMP_FILTER_PTP_V2_EVENT: |
|
3641 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; |
|
3642 config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; |
|
3643 is_l2 = true; |
|
3644 is_l4 = true; |
|
3645 break; |
|
3646 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
|
3647 /* For V1, the hardware can only filter Sync messages or |
|
3648 * Delay Request messages but not both so fall-through to |
|
3649 * time stamp all packets. |
|
3650 */ |
|
3651 case HWTSTAMP_FILTER_ALL: |
|
3652 is_l2 = true; |
|
3653 is_l4 = true; |
|
3654 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; |
|
3655 config->rx_filter = HWTSTAMP_FILTER_ALL; |
|
3656 break; |
|
3657 default: |
|
3658 return -ERANGE; |
|
3659 } |
|
3660 |
|
3661 adapter->hwtstamp_config = *config; |
|
3662 |
|
3663 /* enable/disable Tx h/w time stamping */ |
|
3664 regval = er32(TSYNCTXCTL); |
|
3665 regval &= ~E1000_TSYNCTXCTL_ENABLED; |
|
3666 regval |= tsync_tx_ctl; |
|
3667 ew32(TSYNCTXCTL, regval); |
|
3668 if ((er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) != |
|
3669 (regval & E1000_TSYNCTXCTL_ENABLED)) { |
|
3670 e_err("Timesync Tx Control register not set as expected\n"); |
|
3671 return -EAGAIN; |
|
3672 } |
|
3673 |
|
3674 /* enable/disable Rx h/w time stamping */ |
|
3675 regval = er32(TSYNCRXCTL); |
|
3676 regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK); |
|
3677 regval |= tsync_rx_ctl; |
|
3678 ew32(TSYNCRXCTL, regval); |
|
3679 if ((er32(TSYNCRXCTL) & (E1000_TSYNCRXCTL_ENABLED | |
|
3680 E1000_TSYNCRXCTL_TYPE_MASK)) != |
|
3681 (regval & (E1000_TSYNCRXCTL_ENABLED | |
|
3682 E1000_TSYNCRXCTL_TYPE_MASK))) { |
|
3683 e_err("Timesync Rx Control register not set as expected\n"); |
|
3684 return -EAGAIN; |
|
3685 } |
|
3686 |
|
3687 /* L2: define ethertype filter for time stamped packets */ |
|
3688 if (is_l2) |
|
3689 rxmtrl |= ETH_P_1588; |
|
3690 |
|
3691 /* define which PTP packets get time stamped */ |
|
3692 ew32(RXMTRL, rxmtrl); |
|
3693 |
|
3694 /* Filter by destination port */ |
|
3695 if (is_l4) { |
|
3696 rxudp = PTP_EV_PORT; |
|
3697 cpu_to_be16s(&rxudp); |
|
3698 } |
|
3699 ew32(RXUDP, rxudp); |
|
3700 |
|
3701 e1e_flush(); |
|
3702 |
|
3703 /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */ |
|
3704 er32(RXSTMPH); |
|
3705 er32(TXSTMPH); |
|
3706 |
|
3707 /* Get and set the System Time Register SYSTIM base frequency */ |
|
3708 ret_val = e1000e_get_base_timinca(adapter, ®val); |
|
3709 if (ret_val) |
|
3710 return ret_val; |
|
3711 ew32(TIMINCA, regval); |
|
3712 |
|
3713 /* reset the ns time counter */ |
|
3714 timecounter_init(&adapter->tc, &adapter->cc, |
|
3715 ktime_to_ns(ktime_get_real())); |
|
3716 |
|
3717 return 0; |
|
3718 } |
|
3719 |
|
3720 /** |
|
3721 * e1000_configure - configure the hardware for Rx and Tx |
|
3722 * @adapter: private board structure |
|
3723 **/ |
|
3724 static void e1000_configure(struct e1000_adapter *adapter) |
|
3725 { |
|
3726 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3727 |
|
3728 e1000e_set_rx_mode(adapter->netdev); |
|
3729 |
|
3730 e1000_restore_vlan(adapter); |
|
3731 e1000_init_manageability_pt(adapter); |
|
3732 |
|
3733 e1000_configure_tx(adapter); |
|
3734 |
|
3735 if (adapter->netdev->features & NETIF_F_RXHASH) |
|
3736 e1000e_setup_rss_hash(adapter); |
|
3737 e1000_setup_rctl(adapter); |
|
3738 e1000_configure_rx(adapter); |
|
3739 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL); |
|
3740 } |
|
3741 |
|
3742 /** |
|
3743 * e1000e_power_up_phy - restore link in case the phy was powered down |
|
3744 * @adapter: address of board private structure |
|
3745 * |
|
3746 * The phy may be powered down to save power and turn off link when the |
|
3747 * driver is unloaded and wake on lan is not enabled (among others) |
|
3748 * *** this routine MUST be followed by a call to e1000e_reset *** |
|
3749 **/ |
|
3750 void e1000e_power_up_phy(struct e1000_adapter *adapter) |
|
3751 { |
|
3752 if (adapter->hw.phy.ops.power_up) |
|
3753 adapter->hw.phy.ops.power_up(&adapter->hw); |
|
3754 |
|
3755 adapter->hw.mac.ops.setup_link(&adapter->hw); |
|
3756 } |
|
3757 |
|
3758 /** |
|
3759 * e1000_power_down_phy - Power down the PHY |
|
3760 * |
|
3761 * Power down the PHY so no link is implied when interface is down. |
|
3762 * The PHY cannot be powered down if management or WoL is active. |
|
3763 */ |
|
3764 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
3765 { |
|
3766 if (adapter->hw.phy.ops.power_down) |
|
3767 adapter->hw.phy.ops.power_down(&adapter->hw); |
|
3768 } |
|
3769 |
|
3770 /** |
|
3771 * e1000e_reset - bring the hardware into a known good state |
|
3772 * |
|
3773 * This function boots the hardware and enables some settings that |
|
3774 * require a configuration cycle of the hardware - those cannot be |
|
3775 * set/changed during runtime. After reset the device needs to be |
|
3776 * properly configured for Rx, Tx etc. |
|
3777 */ |
|
3778 void e1000e_reset(struct e1000_adapter *adapter) |
|
3779 { |
|
3780 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
3781 struct e1000_fc_info *fc = &adapter->hw.fc; |
|
3782 struct e1000_hw *hw = &adapter->hw; |
|
3783 u32 tx_space, min_tx_space, min_rx_space; |
|
3784 u32 pba = adapter->pba; |
|
3785 u16 hwm; |
|
3786 |
|
3787 /* reset Packet Buffer Allocation to default */ |
|
3788 ew32(PBA, pba); |
|
3789 |
|
3790 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3791 /* To maintain wire speed transmits, the Tx FIFO should be |
|
3792 * large enough to accommodate two full transmit packets, |
|
3793 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
3794 * the Rx FIFO should be large enough to accommodate at least |
|
3795 * one full receive packet and is similarly rounded up and |
|
3796 * expressed in KB. |
|
3797 */ |
|
3798 pba = er32(PBA); |
|
3799 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
3800 tx_space = pba >> 16; |
|
3801 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
3802 pba &= 0xffff; |
|
3803 /* the Tx fifo also stores 16 bytes of information about the Tx |
|
3804 * but don't include ethernet FCS because hardware appends it |
|
3805 */ |
|
3806 min_tx_space = (adapter->max_frame_size + |
|
3807 sizeof(struct e1000_tx_desc) - ETH_FCS_LEN) * 2; |
|
3808 min_tx_space = ALIGN(min_tx_space, 1024); |
|
3809 min_tx_space >>= 10; |
|
3810 /* software strips receive CRC, so leave room for it */ |
|
3811 min_rx_space = adapter->max_frame_size; |
|
3812 min_rx_space = ALIGN(min_rx_space, 1024); |
|
3813 min_rx_space >>= 10; |
|
3814 |
|
3815 /* If current Tx allocation is less than the min Tx FIFO size, |
|
3816 * and the min Tx FIFO size is less than the current Rx FIFO |
|
3817 * allocation, take space away from current Rx allocation |
|
3818 */ |
|
3819 if ((tx_space < min_tx_space) && |
|
3820 ((min_tx_space - tx_space) < pba)) { |
|
3821 pba -= min_tx_space - tx_space; |
|
3822 |
|
3823 /* if short on Rx space, Rx wins and must trump Tx |
|
3824 * adjustment |
|
3825 */ |
|
3826 if (pba < min_rx_space) |
|
3827 pba = min_rx_space; |
|
3828 } |
|
3829 |
|
3830 ew32(PBA, pba); |
|
3831 } |
|
3832 |
|
3833 /* flow control settings |
|
3834 * |
|
3835 * The high water mark must be low enough to fit one full frame |
|
3836 * (or the size used for early receive) above it in the Rx FIFO. |
|
3837 * Set it to the lower of: |
|
3838 * - 90% of the Rx FIFO size, and |
|
3839 * - the full Rx FIFO size minus one full frame |
|
3840 */ |
|
3841 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
|
3842 fc->pause_time = 0xFFFF; |
|
3843 else |
|
3844 fc->pause_time = E1000_FC_PAUSE_TIME; |
|
3845 fc->send_xon = true; |
|
3846 fc->current_mode = fc->requested_mode; |
|
3847 |
|
3848 switch (hw->mac.type) { |
|
3849 case e1000_ich9lan: |
|
3850 case e1000_ich10lan: |
|
3851 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3852 pba = 14; |
|
3853 ew32(PBA, pba); |
|
3854 fc->high_water = 0x2800; |
|
3855 fc->low_water = fc->high_water - 8; |
|
3856 break; |
|
3857 } |
|
3858 /* fall-through */ |
|
3859 default: |
|
3860 hwm = min(((pba << 10) * 9 / 10), |
|
3861 ((pba << 10) - adapter->max_frame_size)); |
|
3862 |
|
3863 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
|
3864 fc->low_water = fc->high_water - 8; |
|
3865 break; |
|
3866 case e1000_pchlan: |
|
3867 /* Workaround PCH LOM adapter hangs with certain network |
|
3868 * loads. If hangs persist, try disabling Tx flow control. |
|
3869 */ |
|
3870 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3871 fc->high_water = 0x3500; |
|
3872 fc->low_water = 0x1500; |
|
3873 } else { |
|
3874 fc->high_water = 0x5000; |
|
3875 fc->low_water = 0x3000; |
|
3876 } |
|
3877 fc->refresh_time = 0x1000; |
|
3878 break; |
|
3879 case e1000_pch2lan: |
|
3880 case e1000_pch_lpt: |
|
3881 fc->refresh_time = 0x0400; |
|
3882 |
|
3883 if (adapter->netdev->mtu <= ETH_DATA_LEN) { |
|
3884 fc->high_water = 0x05C20; |
|
3885 fc->low_water = 0x05048; |
|
3886 fc->pause_time = 0x0650; |
|
3887 break; |
|
3888 } |
|
3889 |
|
3890 pba = 14; |
|
3891 ew32(PBA, pba); |
|
3892 fc->high_water = ((pba << 10) * 9 / 10) & E1000_FCRTH_RTH; |
|
3893 fc->low_water = ((pba << 10) * 8 / 10) & E1000_FCRTL_RTL; |
|
3894 break; |
|
3895 } |
|
3896 |
|
3897 /* Alignment of Tx data is on an arbitrary byte boundary with the |
|
3898 * maximum size per Tx descriptor limited only to the transmit |
|
3899 * allocation of the packet buffer minus 96 bytes with an upper |
|
3900 * limit of 24KB due to receive synchronization limitations. |
|
3901 */ |
|
3902 adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96, |
|
3903 24 << 10); |
|
3904 |
|
3905 /* Disable Adaptive Interrupt Moderation if 2 full packets cannot |
|
3906 * fit in receive buffer. |
|
3907 */ |
|
3908 if (adapter->itr_setting & 0x3) { |
|
3909 if ((adapter->max_frame_size * 2) > (pba << 10)) { |
|
3910 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
|
3911 dev_info(&adapter->pdev->dev, |
|
3912 "Interrupt Throttle Rate off\n"); |
|
3913 adapter->flags2 |= FLAG2_DISABLE_AIM; |
|
3914 e1000e_write_itr(adapter, 0); |
|
3915 } |
|
3916 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
3917 dev_info(&adapter->pdev->dev, |
|
3918 "Interrupt Throttle Rate on\n"); |
|
3919 adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
|
3920 adapter->itr = 20000; |
|
3921 e1000e_write_itr(adapter, adapter->itr); |
|
3922 } |
|
3923 } |
|
3924 |
|
3925 /* Allow time for pending master requests to run */ |
|
3926 mac->ops.reset_hw(hw); |
|
3927 |
|
3928 /* For parts with AMT enabled, let the firmware know |
|
3929 * that the network interface is in control |
|
3930 */ |
|
3931 if (adapter->flags & FLAG_HAS_AMT) |
|
3932 e1000e_get_hw_control(adapter); |
|
3933 |
|
3934 ew32(WUC, 0); |
|
3935 |
|
3936 if (mac->ops.init_hw(hw)) |
|
3937 e_err("Hardware Error\n"); |
|
3938 |
|
3939 e1000_update_mng_vlan(adapter); |
|
3940 |
|
3941 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
3942 ew32(VET, ETH_P_8021Q); |
|
3943 |
|
3944 e1000e_reset_adaptive(hw); |
|
3945 |
|
3946 /* initialize systim and reset the ns time counter */ |
|
3947 e1000e_config_hwtstamp(adapter, &adapter->hwtstamp_config); |
|
3948 |
|
3949 /* Set EEE advertisement as appropriate */ |
|
3950 if (adapter->flags2 & FLAG2_HAS_EEE) { |
|
3951 s32 ret_val; |
|
3952 u16 adv_addr; |
|
3953 |
|
3954 switch (hw->phy.type) { |
|
3955 case e1000_phy_82579: |
|
3956 adv_addr = I82579_EEE_ADVERTISEMENT; |
|
3957 break; |
|
3958 case e1000_phy_i217: |
|
3959 adv_addr = I217_EEE_ADVERTISEMENT; |
|
3960 break; |
|
3961 default: |
|
3962 dev_err(&adapter->pdev->dev, |
|
3963 "Invalid PHY type setting EEE advertisement\n"); |
|
3964 return; |
|
3965 } |
|
3966 |
|
3967 ret_val = hw->phy.ops.acquire(hw); |
|
3968 if (ret_val) { |
|
3969 dev_err(&adapter->pdev->dev, |
|
3970 "EEE advertisement - unable to acquire PHY\n"); |
|
3971 return; |
|
3972 } |
|
3973 |
|
3974 e1000_write_emi_reg_locked(hw, adv_addr, |
|
3975 hw->dev_spec.ich8lan.eee_disable ? |
|
3976 0 : adapter->eee_advert); |
|
3977 |
|
3978 hw->phy.ops.release(hw); |
|
3979 } |
|
3980 |
|
3981 if (!netif_running(adapter->netdev) && |
|
3982 !test_bit(__E1000_TESTING, &adapter->state)) |
|
3983 e1000_power_down_phy(adapter); |
|
3984 |
|
3985 e1000_get_phy_info(hw); |
|
3986 |
|
3987 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
|
3988 !(adapter->flags & FLAG_SMART_POWER_DOWN)) { |
|
3989 u16 phy_data = 0; |
|
3990 /* speed up time to link by disabling smart power down, ignore |
|
3991 * the return value of this function because there is nothing |
|
3992 * different we would do if it failed |
|
3993 */ |
|
3994 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
|
3995 phy_data &= ~IGP02E1000_PM_SPD; |
|
3996 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); |
|
3997 } |
|
3998 } |
|
3999 |
|
4000 int e1000e_up(struct e1000_adapter *adapter) |
|
4001 { |
|
4002 struct e1000_hw *hw = &adapter->hw; |
|
4003 |
|
4004 /* hardware has been reset, we need to reload some things */ |
|
4005 e1000_configure(adapter); |
|
4006 |
|
4007 clear_bit(__E1000_DOWN, &adapter->state); |
|
4008 |
|
4009 if (adapter->msix_entries) |
|
4010 e1000_configure_msix(adapter); |
|
4011 e1000_irq_enable(adapter); |
|
4012 |
|
4013 netif_start_queue(adapter->netdev); |
|
4014 |
|
4015 /* fire a link change interrupt to start the watchdog */ |
|
4016 if (adapter->msix_entries) |
|
4017 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
4018 else |
|
4019 ew32(ICS, E1000_ICS_LSC); |
|
4020 |
|
4021 return 0; |
|
4022 } |
|
4023 |
|
4024 static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
|
4025 { |
|
4026 struct e1000_hw *hw = &adapter->hw; |
|
4027 |
|
4028 if (!(adapter->flags2 & FLAG2_DMA_BURST)) |
|
4029 return; |
|
4030 |
|
4031 /* flush pending descriptor writebacks to memory */ |
|
4032 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
4033 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
4034 |
|
4035 /* execute the writes immediately */ |
|
4036 e1e_flush(); |
|
4037 |
|
4038 /* due to rare timing issues, write to TIDV/RDTR again to ensure the |
|
4039 * write is successful |
|
4040 */ |
|
4041 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
4042 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
4043 |
|
4044 /* execute the writes immediately */ |
|
4045 e1e_flush(); |
|
4046 } |
|
4047 |
|
4048 static void e1000e_update_stats(struct e1000_adapter *adapter); |
|
4049 |
|
4050 /** |
|
4051 * e1000e_down - quiesce the device and optionally reset the hardware |
|
4052 * @adapter: board private structure |
|
4053 * @reset: boolean flag to reset the hardware or not |
|
4054 */ |
|
4055 void e1000e_down(struct e1000_adapter *adapter, bool reset) |
|
4056 { |
|
4057 struct net_device *netdev = adapter->netdev; |
|
4058 struct e1000_hw *hw = &adapter->hw; |
|
4059 u32 tctl, rctl; |
|
4060 |
|
4061 /* signal that we're down so the interrupt handler does not |
|
4062 * reschedule our watchdog timer |
|
4063 */ |
|
4064 set_bit(__E1000_DOWN, &adapter->state); |
|
4065 |
|
4066 /* disable receives in the hardware */ |
|
4067 rctl = er32(RCTL); |
|
4068 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
4069 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
4070 /* flush and sleep below */ |
|
4071 |
|
4072 netif_stop_queue(netdev); |
|
4073 |
|
4074 /* disable transmits in the hardware */ |
|
4075 tctl = er32(TCTL); |
|
4076 tctl &= ~E1000_TCTL_EN; |
|
4077 ew32(TCTL, tctl); |
|
4078 |
|
4079 /* flush both disables and wait for them to finish */ |
|
4080 e1e_flush(); |
|
4081 usleep_range(10000, 20000); |
|
4082 |
|
4083 e1000_irq_disable(adapter); |
|
4084 |
|
4085 napi_synchronize(&adapter->napi); |
|
4086 |
|
4087 del_timer_sync(&adapter->watchdog_timer); |
|
4088 del_timer_sync(&adapter->phy_info_timer); |
|
4089 |
|
4090 netif_carrier_off(netdev); |
|
4091 |
|
4092 spin_lock(&adapter->stats64_lock); |
|
4093 e1000e_update_stats(adapter); |
|
4094 spin_unlock(&adapter->stats64_lock); |
|
4095 |
|
4096 e1000e_flush_descriptors(adapter); |
|
4097 e1000_clean_tx_ring(adapter->tx_ring); |
|
4098 e1000_clean_rx_ring(adapter->rx_ring); |
|
4099 |
|
4100 adapter->link_speed = 0; |
|
4101 adapter->link_duplex = 0; |
|
4102 |
|
4103 /* Disable Si errata workaround on PCHx for jumbo frame flow */ |
|
4104 if ((hw->mac.type >= e1000_pch2lan) && |
|
4105 (adapter->netdev->mtu > ETH_DATA_LEN) && |
|
4106 e1000_lv_jumbo_workaround_ich8lan(hw, false)) |
|
4107 e_dbg("failed to disable jumbo frame workaround mode\n"); |
|
4108 |
|
4109 if (reset && !pci_channel_offline(adapter->pdev)) |
|
4110 e1000e_reset(adapter); |
|
4111 } |
|
4112 |
|
4113 void e1000e_reinit_locked(struct e1000_adapter *adapter) |
|
4114 { |
|
4115 might_sleep(); |
|
4116 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
4117 usleep_range(1000, 2000); |
|
4118 e1000e_down(adapter, true); |
|
4119 e1000e_up(adapter); |
|
4120 clear_bit(__E1000_RESETTING, &adapter->state); |
|
4121 } |
|
4122 |
|
4123 /** |
|
4124 * e1000e_cyclecounter_read - read raw cycle counter (used by time counter) |
|
4125 * @cc: cyclecounter structure |
|
4126 **/ |
|
4127 static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc) |
|
4128 { |
|
4129 struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter, |
|
4130 cc); |
|
4131 struct e1000_hw *hw = &adapter->hw; |
|
4132 cycle_t systim, systim_next; |
|
4133 |
|
4134 /* latch SYSTIMH on read of SYSTIML */ |
|
4135 systim = (cycle_t)er32(SYSTIML); |
|
4136 systim |= (cycle_t)er32(SYSTIMH) << 32; |
|
4137 |
|
4138 if ((hw->mac.type == e1000_82574) || (hw->mac.type == e1000_82583)) { |
|
4139 u64 incvalue, time_delta, rem, temp; |
|
4140 int i; |
|
4141 |
|
4142 /* errata for 82574/82583 possible bad bits read from SYSTIMH/L |
|
4143 * check to see that the time is incrementing at a reasonable |
|
4144 * rate and is a multiple of incvalue |
|
4145 */ |
|
4146 incvalue = er32(TIMINCA) & E1000_TIMINCA_INCVALUE_MASK; |
|
4147 for (i = 0; i < E1000_MAX_82574_SYSTIM_REREADS; i++) { |
|
4148 /* latch SYSTIMH on read of SYSTIML */ |
|
4149 systim_next = (cycle_t)er32(SYSTIML); |
|
4150 systim_next |= (cycle_t)er32(SYSTIMH) << 32; |
|
4151 |
|
4152 time_delta = systim_next - systim; |
|
4153 temp = time_delta; |
|
4154 rem = do_div(temp, incvalue); |
|
4155 |
|
4156 systim = systim_next; |
|
4157 |
|
4158 if ((time_delta < E1000_82574_SYSTIM_EPSILON) && |
|
4159 (rem == 0)) |
|
4160 break; |
|
4161 } |
|
4162 } |
|
4163 return systim; |
|
4164 } |
|
4165 |
|
4166 /** |
|
4167 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
4168 * @adapter: board private structure to initialize |
|
4169 * |
|
4170 * e1000_sw_init initializes the Adapter private data structure. |
|
4171 * Fields are initialized based on PCI device information and |
|
4172 * OS network device settings (MTU size). |
|
4173 **/ |
|
4174 static int e1000_sw_init(struct e1000_adapter *adapter) |
|
4175 { |
|
4176 struct net_device *netdev = adapter->netdev; |
|
4177 |
|
4178 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
|
4179 adapter->rx_ps_bsize0 = 128; |
|
4180 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
|
4181 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
|
4182 adapter->tx_ring_count = E1000_DEFAULT_TXD; |
|
4183 adapter->rx_ring_count = E1000_DEFAULT_RXD; |
|
4184 |
|
4185 spin_lock_init(&adapter->stats64_lock); |
|
4186 |
|
4187 e1000e_set_interrupt_capability(adapter); |
|
4188 |
|
4189 if (e1000_alloc_queues(adapter)) |
|
4190 return -ENOMEM; |
|
4191 |
|
4192 /* Setup hardware time stamping cyclecounter */ |
|
4193 if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { |
|
4194 adapter->cc.read = e1000e_cyclecounter_read; |
|
4195 adapter->cc.mask = CLOCKSOURCE_MASK(64); |
|
4196 adapter->cc.mult = 1; |
|
4197 /* cc.shift set in e1000e_get_base_tininca() */ |
|
4198 |
|
4199 spin_lock_init(&adapter->systim_lock); |
|
4200 INIT_WORK(&adapter->tx_hwtstamp_work, e1000e_tx_hwtstamp_work); |
|
4201 } |
|
4202 |
|
4203 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
4204 e1000_irq_disable(adapter); |
|
4205 |
|
4206 set_bit(__E1000_DOWN, &adapter->state); |
|
4207 return 0; |
|
4208 } |
|
4209 |
|
4210 /** |
|
4211 * e1000_intr_msi_test - Interrupt Handler |
|
4212 * @irq: interrupt number |
|
4213 * @data: pointer to a network interface device structure |
|
4214 **/ |
|
4215 static irqreturn_t e1000_intr_msi_test(int __always_unused irq, void *data) |
|
4216 { |
|
4217 struct net_device *netdev = data; |
|
4218 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4219 struct e1000_hw *hw = &adapter->hw; |
|
4220 u32 icr = er32(ICR); |
|
4221 |
|
4222 e_dbg("icr is %08X\n", icr); |
|
4223 if (icr & E1000_ICR_RXSEQ) { |
|
4224 adapter->flags &= ~FLAG_MSI_TEST_FAILED; |
|
4225 /* Force memory writes to complete before acknowledging the |
|
4226 * interrupt is handled. |
|
4227 */ |
|
4228 wmb(); |
|
4229 } |
|
4230 |
|
4231 return IRQ_HANDLED; |
|
4232 } |
|
4233 |
|
4234 /** |
|
4235 * e1000_test_msi_interrupt - Returns 0 for successful test |
|
4236 * @adapter: board private struct |
|
4237 * |
|
4238 * code flow taken from tg3.c |
|
4239 **/ |
|
4240 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) |
|
4241 { |
|
4242 struct net_device *netdev = adapter->netdev; |
|
4243 struct e1000_hw *hw = &adapter->hw; |
|
4244 int err; |
|
4245 |
|
4246 /* poll_enable hasn't been called yet, so don't need disable */ |
|
4247 /* clear any pending events */ |
|
4248 er32(ICR); |
|
4249 |
|
4250 /* free the real vector and request a test handler */ |
|
4251 e1000_free_irq(adapter); |
|
4252 e1000e_reset_interrupt_capability(adapter); |
|
4253 |
|
4254 /* Assume that the test fails, if it succeeds then the test |
|
4255 * MSI irq handler will unset this flag |
|
4256 */ |
|
4257 adapter->flags |= FLAG_MSI_TEST_FAILED; |
|
4258 |
|
4259 err = pci_enable_msi(adapter->pdev); |
|
4260 if (err) |
|
4261 goto msi_test_failed; |
|
4262 |
|
4263 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
|
4264 netdev->name, netdev); |
|
4265 if (err) { |
|
4266 pci_disable_msi(adapter->pdev); |
|
4267 goto msi_test_failed; |
|
4268 } |
|
4269 |
|
4270 /* Force memory writes to complete before enabling and firing an |
|
4271 * interrupt. |
|
4272 */ |
|
4273 wmb(); |
|
4274 |
|
4275 e1000_irq_enable(adapter); |
|
4276 |
|
4277 /* fire an unusual interrupt on the test handler */ |
|
4278 ew32(ICS, E1000_ICS_RXSEQ); |
|
4279 e1e_flush(); |
|
4280 msleep(100); |
|
4281 |
|
4282 e1000_irq_disable(adapter); |
|
4283 |
|
4284 rmb(); /* read flags after interrupt has been fired */ |
|
4285 |
|
4286 if (adapter->flags & FLAG_MSI_TEST_FAILED) { |
|
4287 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
4288 e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
|
4289 } else { |
|
4290 e_dbg("MSI interrupt test succeeded!\n"); |
|
4291 } |
|
4292 |
|
4293 free_irq(adapter->pdev->irq, netdev); |
|
4294 pci_disable_msi(adapter->pdev); |
|
4295 |
|
4296 msi_test_failed: |
|
4297 e1000e_set_interrupt_capability(adapter); |
|
4298 return e1000_request_irq(adapter); |
|
4299 } |
|
4300 |
|
4301 /** |
|
4302 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored |
|
4303 * @adapter: board private struct |
|
4304 * |
|
4305 * code flow taken from tg3.c, called with e1000 interrupts disabled. |
|
4306 **/ |
|
4307 static int e1000_test_msi(struct e1000_adapter *adapter) |
|
4308 { |
|
4309 int err; |
|
4310 u16 pci_cmd; |
|
4311 |
|
4312 if (!(adapter->flags & FLAG_MSI_ENABLED)) |
|
4313 return 0; |
|
4314 |
|
4315 /* disable SERR in case the MSI write causes a master abort */ |
|
4316 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
4317 if (pci_cmd & PCI_COMMAND_SERR) |
|
4318 pci_write_config_word(adapter->pdev, PCI_COMMAND, |
|
4319 pci_cmd & ~PCI_COMMAND_SERR); |
|
4320 |
|
4321 err = e1000_test_msi_interrupt(adapter); |
|
4322 |
|
4323 /* re-enable SERR */ |
|
4324 if (pci_cmd & PCI_COMMAND_SERR) { |
|
4325 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
4326 pci_cmd |= PCI_COMMAND_SERR; |
|
4327 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); |
|
4328 } |
|
4329 |
|
4330 return err; |
|
4331 } |
|
4332 |
|
4333 /** |
|
4334 * e1000_open - Called when a network interface is made active |
|
4335 * @netdev: network interface device structure |
|
4336 * |
|
4337 * Returns 0 on success, negative value on failure |
|
4338 * |
|
4339 * The open entry point is called when a network interface is made |
|
4340 * active by the system (IFF_UP). At this point all resources needed |
|
4341 * for transmit and receive operations are allocated, the interrupt |
|
4342 * handler is registered with the OS, the watchdog timer is started, |
|
4343 * and the stack is notified that the interface is ready. |
|
4344 **/ |
|
4345 static int e1000_open(struct net_device *netdev) |
|
4346 { |
|
4347 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4348 struct e1000_hw *hw = &adapter->hw; |
|
4349 struct pci_dev *pdev = adapter->pdev; |
|
4350 int err; |
|
4351 |
|
4352 /* disallow open during test */ |
|
4353 if (test_bit(__E1000_TESTING, &adapter->state)) |
|
4354 return -EBUSY; |
|
4355 |
|
4356 pm_runtime_get_sync(&pdev->dev); |
|
4357 |
|
4358 netif_carrier_off(netdev); |
|
4359 |
|
4360 /* allocate transmit descriptors */ |
|
4361 err = e1000e_setup_tx_resources(adapter->tx_ring); |
|
4362 if (err) |
|
4363 goto err_setup_tx; |
|
4364 |
|
4365 /* allocate receive descriptors */ |
|
4366 err = e1000e_setup_rx_resources(adapter->rx_ring); |
|
4367 if (err) |
|
4368 goto err_setup_rx; |
|
4369 |
|
4370 /* If AMT is enabled, let the firmware know that the network |
|
4371 * interface is now open and reset the part to a known state. |
|
4372 */ |
|
4373 if (adapter->flags & FLAG_HAS_AMT) { |
|
4374 e1000e_get_hw_control(adapter); |
|
4375 e1000e_reset(adapter); |
|
4376 } |
|
4377 |
|
4378 e1000e_power_up_phy(adapter); |
|
4379 |
|
4380 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4381 if ((adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
|
4382 e1000_update_mng_vlan(adapter); |
|
4383 |
|
4384 /* DMA latency requirement to workaround jumbo issue */ |
|
4385 pm_qos_add_request(&adapter->netdev->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, |
|
4386 PM_QOS_DEFAULT_VALUE); |
|
4387 |
|
4388 /* before we allocate an interrupt, we must be ready to handle it. |
|
4389 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
4390 * as soon as we call pci_request_irq, so we have to setup our |
|
4391 * clean_rx handler before we do so. |
|
4392 */ |
|
4393 e1000_configure(adapter); |
|
4394 |
|
4395 err = e1000_request_irq(adapter); |
|
4396 if (err) |
|
4397 goto err_req_irq; |
|
4398 |
|
4399 /* Work around PCIe errata with MSI interrupts causing some chipsets to |
|
4400 * ignore e1000e MSI messages, which means we need to test our MSI |
|
4401 * interrupt now |
|
4402 */ |
|
4403 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
|
4404 err = e1000_test_msi(adapter); |
|
4405 if (err) { |
|
4406 e_err("Interrupt allocation failed\n"); |
|
4407 goto err_req_irq; |
|
4408 } |
|
4409 } |
|
4410 |
|
4411 /* From here on the code is the same as e1000e_up() */ |
|
4412 clear_bit(__E1000_DOWN, &adapter->state); |
|
4413 |
|
4414 napi_enable(&adapter->napi); |
|
4415 |
|
4416 e1000_irq_enable(adapter); |
|
4417 |
|
4418 adapter->tx_hang_recheck = false; |
|
4419 netif_start_queue(netdev); |
|
4420 |
|
4421 hw->mac.get_link_status = true; |
|
4422 pm_runtime_put(&pdev->dev); |
|
4423 |
|
4424 /* fire a link status change interrupt to start the watchdog */ |
|
4425 if (adapter->msix_entries) |
|
4426 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
4427 else |
|
4428 ew32(ICS, E1000_ICS_LSC); |
|
4429 |
|
4430 return 0; |
|
4431 |
|
4432 err_req_irq: |
|
4433 e1000e_release_hw_control(adapter); |
|
4434 e1000_power_down_phy(adapter); |
|
4435 e1000e_free_rx_resources(adapter->rx_ring); |
|
4436 err_setup_rx: |
|
4437 e1000e_free_tx_resources(adapter->tx_ring); |
|
4438 err_setup_tx: |
|
4439 e1000e_reset(adapter); |
|
4440 pm_runtime_put_sync(&pdev->dev); |
|
4441 |
|
4442 return err; |
|
4443 } |
|
4444 |
|
4445 /** |
|
4446 * e1000_close - Disables a network interface |
|
4447 * @netdev: network interface device structure |
|
4448 * |
|
4449 * Returns 0, this is not allowed to fail |
|
4450 * |
|
4451 * The close entry point is called when an interface is de-activated |
|
4452 * by the OS. The hardware is still under the drivers control, but |
|
4453 * needs to be disabled. A global MAC reset is issued to stop the |
|
4454 * hardware, and all transmit and receive resources are freed. |
|
4455 **/ |
|
4456 static int e1000_close(struct net_device *netdev) |
|
4457 { |
|
4458 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4459 struct pci_dev *pdev = adapter->pdev; |
|
4460 int count = E1000_CHECK_RESET_COUNT; |
|
4461 |
|
4462 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
4463 usleep_range(10000, 20000); |
|
4464 |
|
4465 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
4466 |
|
4467 pm_runtime_get_sync(&pdev->dev); |
|
4468 |
|
4469 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
4470 e1000e_down(adapter, true); |
|
4471 e1000_free_irq(adapter); |
|
4472 |
|
4473 /* Link status message must follow this format */ |
|
4474 pr_info("%s NIC Link is Down\n", adapter->netdev->name); |
|
4475 } |
|
4476 |
|
4477 napi_disable(&adapter->napi); |
|
4478 |
|
4479 e1000e_free_tx_resources(adapter->tx_ring); |
|
4480 e1000e_free_rx_resources(adapter->rx_ring); |
|
4481 |
|
4482 /* kill manageability vlan ID if supported, but not if a vlan with |
|
4483 * the same ID is registered on the host OS (let 8021q kill it) |
|
4484 */ |
|
4485 if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
|
4486 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
|
4487 adapter->mng_vlan_id); |
|
4488 |
|
4489 /* If AMT is enabled, let the firmware know that the network |
|
4490 * interface is now closed |
|
4491 */ |
|
4492 if ((adapter->flags & FLAG_HAS_AMT) && |
|
4493 !test_bit(__E1000_TESTING, &adapter->state)) |
|
4494 e1000e_release_hw_control(adapter); |
|
4495 |
|
4496 pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
|
4497 |
|
4498 pm_runtime_put_sync(&pdev->dev); |
|
4499 |
|
4500 return 0; |
|
4501 } |
|
4502 |
|
4503 /** |
|
4504 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
4505 * @netdev: network interface device structure |
|
4506 * @p: pointer to an address structure |
|
4507 * |
|
4508 * Returns 0 on success, negative on failure |
|
4509 **/ |
|
4510 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
4511 { |
|
4512 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4513 struct e1000_hw *hw = &adapter->hw; |
|
4514 struct sockaddr *addr = p; |
|
4515 |
|
4516 if (!is_valid_ether_addr(addr->sa_data)) |
|
4517 return -EADDRNOTAVAIL; |
|
4518 |
|
4519 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
4520 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
|
4521 |
|
4522 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
|
4523 |
|
4524 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { |
|
4525 /* activate the work around */ |
|
4526 e1000e_set_laa_state_82571(&adapter->hw, 1); |
|
4527 |
|
4528 /* Hold a copy of the LAA in RAR[14] This is done so that |
|
4529 * between the time RAR[0] gets clobbered and the time it |
|
4530 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
4531 * of the RARs and no incoming packets directed to this port |
|
4532 * are dropped. Eventually the LAA will be in RAR[0] and |
|
4533 * RAR[14] |
|
4534 */ |
|
4535 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, |
|
4536 adapter->hw.mac.rar_entry_count - 1); |
|
4537 } |
|
4538 |
|
4539 return 0; |
|
4540 } |
|
4541 |
|
4542 /** |
|
4543 * e1000e_update_phy_task - work thread to update phy |
|
4544 * @work: pointer to our work struct |
|
4545 * |
|
4546 * this worker thread exists because we must acquire a |
|
4547 * semaphore to read the phy, which we could msleep while |
|
4548 * waiting for it, and we can't msleep in a timer. |
|
4549 **/ |
|
4550 static void e1000e_update_phy_task(struct work_struct *work) |
|
4551 { |
|
4552 struct e1000_adapter *adapter = container_of(work, |
|
4553 struct e1000_adapter, |
|
4554 update_phy_task); |
|
4555 struct e1000_hw *hw = &adapter->hw; |
|
4556 |
|
4557 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4558 return; |
|
4559 |
|
4560 e1000_get_phy_info(hw); |
|
4561 |
|
4562 /* Enable EEE on 82579 after link up */ |
|
4563 if (hw->phy.type >= e1000_phy_82579) |
|
4564 e1000_set_eee_pchlan(hw); |
|
4565 } |
|
4566 |
|
4567 /** |
|
4568 * e1000_update_phy_info - timre call-back to update PHY info |
|
4569 * @data: pointer to adapter cast into an unsigned long |
|
4570 * |
|
4571 * Need to wait a few seconds after link up to get diagnostic information from |
|
4572 * the phy |
|
4573 **/ |
|
4574 static void e1000_update_phy_info(unsigned long data) |
|
4575 { |
|
4576 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
4577 |
|
4578 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4579 return; |
|
4580 |
|
4581 schedule_work(&adapter->update_phy_task); |
|
4582 } |
|
4583 |
|
4584 /** |
|
4585 * e1000e_update_phy_stats - Update the PHY statistics counters |
|
4586 * @adapter: board private structure |
|
4587 * |
|
4588 * Read/clear the upper 16-bit PHY registers and read/accumulate lower |
|
4589 **/ |
|
4590 static void e1000e_update_phy_stats(struct e1000_adapter *adapter) |
|
4591 { |
|
4592 struct e1000_hw *hw = &adapter->hw; |
|
4593 s32 ret_val; |
|
4594 u16 phy_data; |
|
4595 |
|
4596 ret_val = hw->phy.ops.acquire(hw); |
|
4597 if (ret_val) |
|
4598 return; |
|
4599 |
|
4600 /* A page set is expensive so check if already on desired page. |
|
4601 * If not, set to the page with the PHY status registers. |
|
4602 */ |
|
4603 hw->phy.addr = 1; |
|
4604 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
4605 &phy_data); |
|
4606 if (ret_val) |
|
4607 goto release; |
|
4608 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
|
4609 ret_val = hw->phy.ops.set_page(hw, |
|
4610 HV_STATS_PAGE << IGP_PAGE_SHIFT); |
|
4611 if (ret_val) |
|
4612 goto release; |
|
4613 } |
|
4614 |
|
4615 /* Single Collision Count */ |
|
4616 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
|
4617 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); |
|
4618 if (!ret_val) |
|
4619 adapter->stats.scc += phy_data; |
|
4620 |
|
4621 /* Excessive Collision Count */ |
|
4622 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
|
4623 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); |
|
4624 if (!ret_val) |
|
4625 adapter->stats.ecol += phy_data; |
|
4626 |
|
4627 /* Multiple Collision Count */ |
|
4628 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
|
4629 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); |
|
4630 if (!ret_val) |
|
4631 adapter->stats.mcc += phy_data; |
|
4632 |
|
4633 /* Late Collision Count */ |
|
4634 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
|
4635 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); |
|
4636 if (!ret_val) |
|
4637 adapter->stats.latecol += phy_data; |
|
4638 |
|
4639 /* Collision Count - also used for adaptive IFS */ |
|
4640 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
|
4641 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); |
|
4642 if (!ret_val) |
|
4643 hw->mac.collision_delta = phy_data; |
|
4644 |
|
4645 /* Defer Count */ |
|
4646 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
|
4647 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); |
|
4648 if (!ret_val) |
|
4649 adapter->stats.dc += phy_data; |
|
4650 |
|
4651 /* Transmit with no CRS */ |
|
4652 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
|
4653 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); |
|
4654 if (!ret_val) |
|
4655 adapter->stats.tncrs += phy_data; |
|
4656 |
|
4657 release: |
|
4658 hw->phy.ops.release(hw); |
|
4659 } |
|
4660 |
|
4661 /** |
|
4662 * e1000e_update_stats - Update the board statistics counters |
|
4663 * @adapter: board private structure |
|
4664 **/ |
|
4665 static void e1000e_update_stats(struct e1000_adapter *adapter) |
|
4666 { |
|
4667 struct net_device *netdev = adapter->netdev; |
|
4668 struct e1000_hw *hw = &adapter->hw; |
|
4669 struct pci_dev *pdev = adapter->pdev; |
|
4670 |
|
4671 /* Prevent stats update while adapter is being reset, or if the pci |
|
4672 * connection is down. |
|
4673 */ |
|
4674 if (adapter->link_speed == 0) |
|
4675 return; |
|
4676 if (pci_channel_offline(pdev)) |
|
4677 return; |
|
4678 |
|
4679 adapter->stats.crcerrs += er32(CRCERRS); |
|
4680 adapter->stats.gprc += er32(GPRC); |
|
4681 adapter->stats.gorc += er32(GORCL); |
|
4682 er32(GORCH); /* Clear gorc */ |
|
4683 adapter->stats.bprc += er32(BPRC); |
|
4684 adapter->stats.mprc += er32(MPRC); |
|
4685 adapter->stats.roc += er32(ROC); |
|
4686 |
|
4687 adapter->stats.mpc += er32(MPC); |
|
4688 |
|
4689 /* Half-duplex statistics */ |
|
4690 if (adapter->link_duplex == HALF_DUPLEX) { |
|
4691 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { |
|
4692 e1000e_update_phy_stats(adapter); |
|
4693 } else { |
|
4694 adapter->stats.scc += er32(SCC); |
|
4695 adapter->stats.ecol += er32(ECOL); |
|
4696 adapter->stats.mcc += er32(MCC); |
|
4697 adapter->stats.latecol += er32(LATECOL); |
|
4698 adapter->stats.dc += er32(DC); |
|
4699 |
|
4700 hw->mac.collision_delta = er32(COLC); |
|
4701 |
|
4702 if ((hw->mac.type != e1000_82574) && |
|
4703 (hw->mac.type != e1000_82583)) |
|
4704 adapter->stats.tncrs += er32(TNCRS); |
|
4705 } |
|
4706 adapter->stats.colc += hw->mac.collision_delta; |
|
4707 } |
|
4708 |
|
4709 adapter->stats.xonrxc += er32(XONRXC); |
|
4710 adapter->stats.xontxc += er32(XONTXC); |
|
4711 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
4712 adapter->stats.xofftxc += er32(XOFFTXC); |
|
4713 adapter->stats.gptc += er32(GPTC); |
|
4714 adapter->stats.gotc += er32(GOTCL); |
|
4715 er32(GOTCH); /* Clear gotc */ |
|
4716 adapter->stats.rnbc += er32(RNBC); |
|
4717 adapter->stats.ruc += er32(RUC); |
|
4718 |
|
4719 adapter->stats.mptc += er32(MPTC); |
|
4720 adapter->stats.bptc += er32(BPTC); |
|
4721 |
|
4722 /* used for adaptive IFS */ |
|
4723 |
|
4724 hw->mac.tx_packet_delta = er32(TPT); |
|
4725 adapter->stats.tpt += hw->mac.tx_packet_delta; |
|
4726 |
|
4727 adapter->stats.algnerrc += er32(ALGNERRC); |
|
4728 adapter->stats.rxerrc += er32(RXERRC); |
|
4729 adapter->stats.cexterr += er32(CEXTERR); |
|
4730 adapter->stats.tsctc += er32(TSCTC); |
|
4731 adapter->stats.tsctfc += er32(TSCTFC); |
|
4732 |
|
4733 /* Fill out the OS statistics structure */ |
|
4734 netdev->stats.multicast = adapter->stats.mprc; |
|
4735 netdev->stats.collisions = adapter->stats.colc; |
|
4736 |
|
4737 /* Rx Errors */ |
|
4738 |
|
4739 /* RLEC on some newer hardware can be incorrect so build |
|
4740 * our own version based on RUC and ROC |
|
4741 */ |
|
4742 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
4743 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
4744 adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; |
|
4745 netdev->stats.rx_length_errors = adapter->stats.ruc + |
|
4746 adapter->stats.roc; |
|
4747 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
4748 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
4749 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
4750 |
|
4751 /* Tx Errors */ |
|
4752 netdev->stats.tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
|
4753 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
4754 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
4755 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
4756 |
|
4757 /* Tx Dropped needs to be maintained elsewhere */ |
|
4758 |
|
4759 /* Management Stats */ |
|
4760 adapter->stats.mgptc += er32(MGTPTC); |
|
4761 adapter->stats.mgprc += er32(MGTPRC); |
|
4762 adapter->stats.mgpdc += er32(MGTPDC); |
|
4763 |
|
4764 /* Correctable ECC Errors */ |
|
4765 if (hw->mac.type == e1000_pch_lpt) { |
|
4766 u32 pbeccsts = er32(PBECCSTS); |
|
4767 |
|
4768 adapter->corr_errors += |
|
4769 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; |
|
4770 adapter->uncorr_errors += |
|
4771 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> |
|
4772 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; |
|
4773 } |
|
4774 } |
|
4775 |
|
4776 /** |
|
4777 * e1000_phy_read_status - Update the PHY register status snapshot |
|
4778 * @adapter: board private structure |
|
4779 **/ |
|
4780 static void e1000_phy_read_status(struct e1000_adapter *adapter) |
|
4781 { |
|
4782 struct e1000_hw *hw = &adapter->hw; |
|
4783 struct e1000_phy_regs *phy = &adapter->phy_regs; |
|
4784 |
|
4785 if (!pm_runtime_suspended((&adapter->pdev->dev)->parent) && |
|
4786 (er32(STATUS) & E1000_STATUS_LU) && |
|
4787 (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
|
4788 int ret_val; |
|
4789 |
|
4790 ret_val = e1e_rphy(hw, MII_BMCR, &phy->bmcr); |
|
4791 ret_val |= e1e_rphy(hw, MII_BMSR, &phy->bmsr); |
|
4792 ret_val |= e1e_rphy(hw, MII_ADVERTISE, &phy->advertise); |
|
4793 ret_val |= e1e_rphy(hw, MII_LPA, &phy->lpa); |
|
4794 ret_val |= e1e_rphy(hw, MII_EXPANSION, &phy->expansion); |
|
4795 ret_val |= e1e_rphy(hw, MII_CTRL1000, &phy->ctrl1000); |
|
4796 ret_val |= e1e_rphy(hw, MII_STAT1000, &phy->stat1000); |
|
4797 ret_val |= e1e_rphy(hw, MII_ESTATUS, &phy->estatus); |
|
4798 if (ret_val) |
|
4799 e_warn("Error reading PHY register\n"); |
|
4800 } else { |
|
4801 /* Do not read PHY registers if link is not up |
|
4802 * Set values to typical power-on defaults |
|
4803 */ |
|
4804 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); |
|
4805 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | |
|
4806 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | |
|
4807 BMSR_ERCAP); |
|
4808 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | |
|
4809 ADVERTISE_ALL | ADVERTISE_CSMA); |
|
4810 phy->lpa = 0; |
|
4811 phy->expansion = EXPANSION_ENABLENPAGE; |
|
4812 phy->ctrl1000 = ADVERTISE_1000FULL; |
|
4813 phy->stat1000 = 0; |
|
4814 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); |
|
4815 } |
|
4816 } |
|
4817 |
|
4818 static void e1000_print_link_info(struct e1000_adapter *adapter) |
|
4819 { |
|
4820 struct e1000_hw *hw = &adapter->hw; |
|
4821 u32 ctrl = er32(CTRL); |
|
4822 |
|
4823 /* Link status message must follow this format for user tools */ |
|
4824 pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", |
|
4825 adapter->netdev->name, adapter->link_speed, |
|
4826 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half", |
|
4827 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" : |
|
4828 (ctrl & E1000_CTRL_RFCE) ? "Rx" : |
|
4829 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"); |
|
4830 } |
|
4831 |
|
4832 static bool e1000e_has_link(struct e1000_adapter *adapter) |
|
4833 { |
|
4834 struct e1000_hw *hw = &adapter->hw; |
|
4835 bool link_active = false; |
|
4836 s32 ret_val = 0; |
|
4837 |
|
4838 /* get_link_status is set on LSC (link status) interrupt or |
|
4839 * Rx sequence error interrupt. get_link_status will stay |
|
4840 * false until the check_for_link establishes link |
|
4841 * for copper adapters ONLY |
|
4842 */ |
|
4843 switch (hw->phy.media_type) { |
|
4844 case e1000_media_type_copper: |
|
4845 if (hw->mac.get_link_status) { |
|
4846 ret_val = hw->mac.ops.check_for_link(hw); |
|
4847 link_active = !hw->mac.get_link_status; |
|
4848 } else { |
|
4849 link_active = true; |
|
4850 } |
|
4851 break; |
|
4852 case e1000_media_type_fiber: |
|
4853 ret_val = hw->mac.ops.check_for_link(hw); |
|
4854 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
4855 break; |
|
4856 case e1000_media_type_internal_serdes: |
|
4857 ret_val = hw->mac.ops.check_for_link(hw); |
|
4858 link_active = adapter->hw.mac.serdes_has_link; |
|
4859 break; |
|
4860 default: |
|
4861 case e1000_media_type_unknown: |
|
4862 break; |
|
4863 } |
|
4864 |
|
4865 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && |
|
4866 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
4867 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ |
|
4868 e_info("Gigabit has been disabled, downgrading speed\n"); |
|
4869 } |
|
4870 |
|
4871 return link_active; |
|
4872 } |
|
4873 |
|
4874 static void e1000e_enable_receives(struct e1000_adapter *adapter) |
|
4875 { |
|
4876 /* make sure the receive unit is started */ |
|
4877 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4878 (adapter->flags & FLAG_RESTART_NOW)) { |
|
4879 struct e1000_hw *hw = &adapter->hw; |
|
4880 u32 rctl = er32(RCTL); |
|
4881 |
|
4882 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
4883 adapter->flags &= ~FLAG_RESTART_NOW; |
|
4884 } |
|
4885 } |
|
4886 |
|
4887 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
|
4888 { |
|
4889 struct e1000_hw *hw = &adapter->hw; |
|
4890 |
|
4891 /* With 82574 controllers, PHY needs to be checked periodically |
|
4892 * for hung state and reset, if two calls return true |
|
4893 */ |
|
4894 if (e1000_check_phy_82574(hw)) |
|
4895 adapter->phy_hang_count++; |
|
4896 else |
|
4897 adapter->phy_hang_count = 0; |
|
4898 |
|
4899 if (adapter->phy_hang_count > 1) { |
|
4900 adapter->phy_hang_count = 0; |
|
4901 e_dbg("PHY appears hung - resetting\n"); |
|
4902 schedule_work(&adapter->reset_task); |
|
4903 } |
|
4904 } |
|
4905 |
|
4906 /** |
|
4907 * e1000_watchdog - Timer Call-back |
|
4908 * @data: pointer to adapter cast into an unsigned long |
|
4909 **/ |
|
4910 static void e1000_watchdog(unsigned long data) |
|
4911 { |
|
4912 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
4913 |
|
4914 /* Do the rest outside of interrupt context */ |
|
4915 schedule_work(&adapter->watchdog_task); |
|
4916 |
|
4917 /* TODO: make this use queue_delayed_work() */ |
|
4918 } |
|
4919 |
|
4920 static void e1000_watchdog_task(struct work_struct *work) |
|
4921 { |
|
4922 struct e1000_adapter *adapter = container_of(work, |
|
4923 struct e1000_adapter, |
|
4924 watchdog_task); |
|
4925 struct net_device *netdev = adapter->netdev; |
|
4926 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
4927 struct e1000_phy_info *phy = &adapter->hw.phy; |
|
4928 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
4929 struct e1000_hw *hw = &adapter->hw; |
|
4930 u32 link, tctl; |
|
4931 |
|
4932 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4933 return; |
|
4934 |
|
4935 link = e1000e_has_link(adapter); |
|
4936 if ((netif_carrier_ok(netdev)) && link) { |
|
4937 /* Cancel scheduled suspend requests. */ |
|
4938 pm_runtime_resume(netdev->dev.parent); |
|
4939 |
|
4940 e1000e_enable_receives(adapter); |
|
4941 goto link_up; |
|
4942 } |
|
4943 |
|
4944 if ((e1000e_enable_tx_pkt_filtering(hw)) && |
|
4945 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) |
|
4946 e1000_update_mng_vlan(adapter); |
|
4947 |
|
4948 if (link) { |
|
4949 if (!netif_carrier_ok(netdev)) { |
|
4950 bool txb2b = true; |
|
4951 |
|
4952 /* Cancel scheduled suspend requests. */ |
|
4953 pm_runtime_resume(netdev->dev.parent); |
|
4954 |
|
4955 /* update snapshot of PHY registers on LSC */ |
|
4956 e1000_phy_read_status(adapter); |
|
4957 mac->ops.get_link_up_info(&adapter->hw, |
|
4958 &adapter->link_speed, |
|
4959 &adapter->link_duplex); |
|
4960 e1000_print_link_info(adapter); |
|
4961 |
|
4962 /* check if SmartSpeed worked */ |
|
4963 e1000e_check_downshift(hw); |
|
4964 if (phy->speed_downgraded) |
|
4965 netdev_warn(netdev, |
|
4966 "Link Speed was downgraded by SmartSpeed\n"); |
|
4967 |
|
4968 /* On supported PHYs, check for duplex mismatch only |
|
4969 * if link has autonegotiated at 10/100 half |
|
4970 */ |
|
4971 if ((hw->phy.type == e1000_phy_igp_3 || |
|
4972 hw->phy.type == e1000_phy_bm) && |
|
4973 hw->mac.autoneg && |
|
4974 (adapter->link_speed == SPEED_10 || |
|
4975 adapter->link_speed == SPEED_100) && |
|
4976 (adapter->link_duplex == HALF_DUPLEX)) { |
|
4977 u16 autoneg_exp; |
|
4978 |
|
4979 e1e_rphy(hw, MII_EXPANSION, &autoneg_exp); |
|
4980 |
|
4981 if (!(autoneg_exp & EXPANSION_NWAY)) |
|
4982 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n"); |
|
4983 } |
|
4984 |
|
4985 /* adjust timeout factor according to speed/duplex */ |
|
4986 adapter->tx_timeout_factor = 1; |
|
4987 switch (adapter->link_speed) { |
|
4988 case SPEED_10: |
|
4989 txb2b = false; |
|
4990 adapter->tx_timeout_factor = 16; |
|
4991 break; |
|
4992 case SPEED_100: |
|
4993 txb2b = false; |
|
4994 adapter->tx_timeout_factor = 10; |
|
4995 break; |
|
4996 } |
|
4997 |
|
4998 /* workaround: re-program speed mode bit after |
|
4999 * link-up event |
|
5000 */ |
|
5001 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
|
5002 !txb2b) { |
|
5003 u32 tarc0; |
|
5004 |
|
5005 tarc0 = er32(TARC(0)); |
|
5006 tarc0 &= ~SPEED_MODE_BIT; |
|
5007 ew32(TARC(0), tarc0); |
|
5008 } |
|
5009 |
|
5010 /* disable TSO for pcie and 10/100 speeds, to avoid |
|
5011 * some hardware issues |
|
5012 */ |
|
5013 if (!(adapter->flags & FLAG_TSO_FORCE)) { |
|
5014 switch (adapter->link_speed) { |
|
5015 case SPEED_10: |
|
5016 case SPEED_100: |
|
5017 e_info("10/100 speed: disabling TSO\n"); |
|
5018 netdev->features &= ~NETIF_F_TSO; |
|
5019 netdev->features &= ~NETIF_F_TSO6; |
|
5020 break; |
|
5021 case SPEED_1000: |
|
5022 netdev->features |= NETIF_F_TSO; |
|
5023 netdev->features |= NETIF_F_TSO6; |
|
5024 break; |
|
5025 default: |
|
5026 /* oops */ |
|
5027 break; |
|
5028 } |
|
5029 } |
|
5030 |
|
5031 /* enable transmits in the hardware, need to do this |
|
5032 * after setting TARC(0) |
|
5033 */ |
|
5034 tctl = er32(TCTL); |
|
5035 tctl |= E1000_TCTL_EN; |
|
5036 ew32(TCTL, tctl); |
|
5037 |
|
5038 /* Perform any post-link-up configuration before |
|
5039 * reporting link up. |
|
5040 */ |
|
5041 if (phy->ops.cfg_on_link_up) |
|
5042 phy->ops.cfg_on_link_up(hw); |
|
5043 |
|
5044 netif_carrier_on(netdev); |
|
5045 |
|
5046 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
5047 mod_timer(&adapter->phy_info_timer, |
|
5048 round_jiffies(jiffies + 2 * HZ)); |
|
5049 } |
|
5050 } else { |
|
5051 if (netif_carrier_ok(netdev)) { |
|
5052 adapter->link_speed = 0; |
|
5053 adapter->link_duplex = 0; |
|
5054 /* Link status message must follow this format */ |
|
5055 pr_info("%s NIC Link is Down\n", adapter->netdev->name); |
|
5056 netif_carrier_off(netdev); |
|
5057 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
5058 mod_timer(&adapter->phy_info_timer, |
|
5059 round_jiffies(jiffies + 2 * HZ)); |
|
5060 |
|
5061 /* 8000ES2LAN requires a Rx packet buffer work-around |
|
5062 * on link down event; reset the controller to flush |
|
5063 * the Rx packet buffer. |
|
5064 */ |
|
5065 if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
|
5066 adapter->flags |= FLAG_RESTART_NOW; |
|
5067 else |
|
5068 pm_schedule_suspend(netdev->dev.parent, |
|
5069 LINK_TIMEOUT); |
|
5070 } |
|
5071 } |
|
5072 |
|
5073 link_up: |
|
5074 spin_lock(&adapter->stats64_lock); |
|
5075 e1000e_update_stats(adapter); |
|
5076 |
|
5077 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
5078 adapter->tpt_old = adapter->stats.tpt; |
|
5079 mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
5080 adapter->colc_old = adapter->stats.colc; |
|
5081 |
|
5082 adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
|
5083 adapter->gorc_old = adapter->stats.gorc; |
|
5084 adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
|
5085 adapter->gotc_old = adapter->stats.gotc; |
|
5086 spin_unlock(&adapter->stats64_lock); |
|
5087 |
|
5088 /* If the link is lost the controller stops DMA, but |
|
5089 * if there is queued Tx work it cannot be done. So |
|
5090 * reset the controller to flush the Tx packet buffers. |
|
5091 */ |
|
5092 if (!netif_carrier_ok(netdev) && |
|
5093 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) |
|
5094 adapter->flags |= FLAG_RESTART_NOW; |
|
5095 |
|
5096 /* If reset is necessary, do it outside of interrupt context. */ |
|
5097 if (adapter->flags & FLAG_RESTART_NOW) { |
|
5098 schedule_work(&adapter->reset_task); |
|
5099 /* return immediately since reset is imminent */ |
|
5100 return; |
|
5101 } |
|
5102 |
|
5103 e1000e_update_adaptive(&adapter->hw); |
|
5104 |
|
5105 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
5106 if (adapter->itr_setting == 4) { |
|
5107 /* Symmetric Tx/Rx gets a reduced ITR=2000; |
|
5108 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
5109 * everyone else is between 2000-8000. |
|
5110 */ |
|
5111 u32 goc = (adapter->gotc + adapter->gorc) / 10000; |
|
5112 u32 dif = (adapter->gotc > adapter->gorc ? |
|
5113 adapter->gotc - adapter->gorc : |
|
5114 adapter->gorc - adapter->gotc) / 10000; |
|
5115 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
5116 |
|
5117 e1000e_write_itr(adapter, itr); |
|
5118 } |
|
5119 |
|
5120 /* Cause software interrupt to ensure Rx ring is cleaned */ |
|
5121 if (adapter->msix_entries) |
|
5122 ew32(ICS, adapter->rx_ring->ims_val); |
|
5123 else |
|
5124 ew32(ICS, E1000_ICS_RXDMT0); |
|
5125 |
|
5126 /* flush pending descriptors to memory before detecting Tx hang */ |
|
5127 e1000e_flush_descriptors(adapter); |
|
5128 |
|
5129 /* Force detection of hung controller every watchdog period */ |
|
5130 adapter->detect_tx_hung = true; |
|
5131 |
|
5132 /* With 82571 controllers, LAA may be overwritten due to controller |
|
5133 * reset from the other port. Set the appropriate LAA in RAR[0] |
|
5134 */ |
|
5135 if (e1000e_get_laa_state_82571(hw)) |
|
5136 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0); |
|
5137 |
|
5138 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
|
5139 e1000e_check_82574_phy_workaround(adapter); |
|
5140 |
|
5141 /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */ |
|
5142 if (adapter->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) { |
|
5143 if ((adapter->flags2 & FLAG2_CHECK_RX_HWTSTAMP) && |
|
5144 (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) { |
|
5145 er32(RXSTMPH); |
|
5146 adapter->rx_hwtstamp_cleared++; |
|
5147 } else { |
|
5148 adapter->flags2 |= FLAG2_CHECK_RX_HWTSTAMP; |
|
5149 } |
|
5150 } |
|
5151 |
|
5152 /* Reset the timer */ |
|
5153 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
5154 mod_timer(&adapter->watchdog_timer, |
|
5155 round_jiffies(jiffies + 2 * HZ)); |
|
5156 } |
|
5157 |
|
5158 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
5159 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
5160 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
5161 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
5162 #define E1000_TX_FLAGS_NO_FCS 0x00000010 |
|
5163 #define E1000_TX_FLAGS_HWTSTAMP 0x00000020 |
|
5164 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
5165 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
5166 |
|
5167 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
5168 { |
|
5169 struct e1000_context_desc *context_desc; |
|
5170 struct e1000_buffer *buffer_info; |
|
5171 unsigned int i; |
|
5172 u32 cmd_length = 0; |
|
5173 u16 ipcse = 0, mss; |
|
5174 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
5175 int err; |
|
5176 |
|
5177 if (!skb_is_gso(skb)) |
|
5178 return 0; |
|
5179 |
|
5180 err = skb_cow_head(skb, 0); |
|
5181 if (err < 0) |
|
5182 return err; |
|
5183 |
|
5184 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
5185 mss = skb_shinfo(skb)->gso_size; |
|
5186 if (skb->protocol == htons(ETH_P_IP)) { |
|
5187 struct iphdr *iph = ip_hdr(skb); |
|
5188 iph->tot_len = 0; |
|
5189 iph->check = 0; |
|
5190 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, |
|
5191 0, IPPROTO_TCP, 0); |
|
5192 cmd_length = E1000_TXD_CMD_IP; |
|
5193 ipcse = skb_transport_offset(skb) - 1; |
|
5194 } else if (skb_is_gso_v6(skb)) { |
|
5195 ipv6_hdr(skb)->payload_len = 0; |
|
5196 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
5197 &ipv6_hdr(skb)->daddr, |
|
5198 0, IPPROTO_TCP, 0); |
|
5199 ipcse = 0; |
|
5200 } |
|
5201 ipcss = skb_network_offset(skb); |
|
5202 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
5203 tucss = skb_transport_offset(skb); |
|
5204 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
5205 |
|
5206 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
5207 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
5208 |
|
5209 i = tx_ring->next_to_use; |
|
5210 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
5211 buffer_info = &tx_ring->buffer_info[i]; |
|
5212 |
|
5213 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
5214 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
5215 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
5216 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
5217 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
5218 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
5219 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
5220 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
5221 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
5222 |
|
5223 buffer_info->time_stamp = jiffies; |
|
5224 buffer_info->next_to_watch = i; |
|
5225 |
|
5226 i++; |
|
5227 if (i == tx_ring->count) |
|
5228 i = 0; |
|
5229 tx_ring->next_to_use = i; |
|
5230 |
|
5231 return 1; |
|
5232 } |
|
5233 |
|
5234 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
5235 { |
|
5236 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5237 struct e1000_context_desc *context_desc; |
|
5238 struct e1000_buffer *buffer_info; |
|
5239 unsigned int i; |
|
5240 u8 css; |
|
5241 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
5242 __be16 protocol; |
|
5243 |
|
5244 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
5245 return false; |
|
5246 |
|
5247 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
|
5248 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; |
|
5249 else |
|
5250 protocol = skb->protocol; |
|
5251 |
|
5252 switch (protocol) { |
|
5253 case cpu_to_be16(ETH_P_IP): |
|
5254 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
5255 cmd_len |= E1000_TXD_CMD_TCP; |
|
5256 break; |
|
5257 case cpu_to_be16(ETH_P_IPV6): |
|
5258 /* XXX not handling all IPV6 headers */ |
|
5259 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
5260 cmd_len |= E1000_TXD_CMD_TCP; |
|
5261 break; |
|
5262 default: |
|
5263 if (unlikely(net_ratelimit())) |
|
5264 e_warn("checksum_partial proto=%x!\n", |
|
5265 be16_to_cpu(protocol)); |
|
5266 break; |
|
5267 } |
|
5268 |
|
5269 css = skb_checksum_start_offset(skb); |
|
5270 |
|
5271 i = tx_ring->next_to_use; |
|
5272 buffer_info = &tx_ring->buffer_info[i]; |
|
5273 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
5274 |
|
5275 context_desc->lower_setup.ip_config = 0; |
|
5276 context_desc->upper_setup.tcp_fields.tucss = css; |
|
5277 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset; |
|
5278 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
5279 context_desc->tcp_seg_setup.data = 0; |
|
5280 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
5281 |
|
5282 buffer_info->time_stamp = jiffies; |
|
5283 buffer_info->next_to_watch = i; |
|
5284 |
|
5285 i++; |
|
5286 if (i == tx_ring->count) |
|
5287 i = 0; |
|
5288 tx_ring->next_to_use = i; |
|
5289 |
|
5290 return true; |
|
5291 } |
|
5292 |
|
5293 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb, |
|
5294 unsigned int first, unsigned int max_per_txd, |
|
5295 unsigned int nr_frags) |
|
5296 { |
|
5297 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5298 struct pci_dev *pdev = adapter->pdev; |
|
5299 struct e1000_buffer *buffer_info; |
|
5300 unsigned int len = skb_headlen(skb); |
|
5301 unsigned int offset = 0, size, count = 0, i; |
|
5302 unsigned int f, bytecount, segs; |
|
5303 |
|
5304 i = tx_ring->next_to_use; |
|
5305 |
|
5306 while (len) { |
|
5307 buffer_info = &tx_ring->buffer_info[i]; |
|
5308 size = min(len, max_per_txd); |
|
5309 |
|
5310 buffer_info->length = size; |
|
5311 buffer_info->time_stamp = jiffies; |
|
5312 buffer_info->next_to_watch = i; |
|
5313 buffer_info->dma = dma_map_single(&pdev->dev, |
|
5314 skb->data + offset, |
|
5315 size, DMA_TO_DEVICE); |
|
5316 buffer_info->mapped_as_page = false; |
|
5317 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
5318 goto dma_error; |
|
5319 |
|
5320 len -= size; |
|
5321 offset += size; |
|
5322 count++; |
|
5323 |
|
5324 if (len) { |
|
5325 i++; |
|
5326 if (i == tx_ring->count) |
|
5327 i = 0; |
|
5328 } |
|
5329 } |
|
5330 |
|
5331 for (f = 0; f < nr_frags; f++) { |
|
5332 const struct skb_frag_struct *frag; |
|
5333 |
|
5334 frag = &skb_shinfo(skb)->frags[f]; |
|
5335 len = skb_frag_size(frag); |
|
5336 offset = 0; |
|
5337 |
|
5338 while (len) { |
|
5339 i++; |
|
5340 if (i == tx_ring->count) |
|
5341 i = 0; |
|
5342 |
|
5343 buffer_info = &tx_ring->buffer_info[i]; |
|
5344 size = min(len, max_per_txd); |
|
5345 |
|
5346 buffer_info->length = size; |
|
5347 buffer_info->time_stamp = jiffies; |
|
5348 buffer_info->next_to_watch = i; |
|
5349 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
|
5350 offset, size, |
|
5351 DMA_TO_DEVICE); |
|
5352 buffer_info->mapped_as_page = true; |
|
5353 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
5354 goto dma_error; |
|
5355 |
|
5356 len -= size; |
|
5357 offset += size; |
|
5358 count++; |
|
5359 } |
|
5360 } |
|
5361 |
|
5362 segs = skb_shinfo(skb)->gso_segs ? : 1; |
|
5363 /* multiply data chunks by size of headers */ |
|
5364 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; |
|
5365 |
|
5366 tx_ring->buffer_info[i].skb = skb; |
|
5367 tx_ring->buffer_info[i].segs = segs; |
|
5368 tx_ring->buffer_info[i].bytecount = bytecount; |
|
5369 tx_ring->buffer_info[first].next_to_watch = i; |
|
5370 |
|
5371 return count; |
|
5372 |
|
5373 dma_error: |
|
5374 dev_err(&pdev->dev, "Tx DMA map failed\n"); |
|
5375 buffer_info->dma = 0; |
|
5376 if (count) |
|
5377 count--; |
|
5378 |
|
5379 while (count--) { |
|
5380 if (i == 0) |
|
5381 i += tx_ring->count; |
|
5382 i--; |
|
5383 buffer_info = &tx_ring->buffer_info[i]; |
|
5384 e1000_put_txbuf(tx_ring, buffer_info); |
|
5385 } |
|
5386 |
|
5387 return 0; |
|
5388 } |
|
5389 |
|
5390 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count) |
|
5391 { |
|
5392 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5393 struct e1000_tx_desc *tx_desc = NULL; |
|
5394 struct e1000_buffer *buffer_info; |
|
5395 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
5396 unsigned int i; |
|
5397 |
|
5398 if (tx_flags & E1000_TX_FLAGS_TSO) { |
|
5399 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
5400 E1000_TXD_CMD_TSE; |
|
5401 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
5402 |
|
5403 if (tx_flags & E1000_TX_FLAGS_IPV4) |
|
5404 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
5405 } |
|
5406 |
|
5407 if (tx_flags & E1000_TX_FLAGS_CSUM) { |
|
5408 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
5409 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
5410 } |
|
5411 |
|
5412 if (tx_flags & E1000_TX_FLAGS_VLAN) { |
|
5413 txd_lower |= E1000_TXD_CMD_VLE; |
|
5414 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
5415 } |
|
5416 |
|
5417 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
5418 txd_lower &= ~(E1000_TXD_CMD_IFCS); |
|
5419 |
|
5420 if (unlikely(tx_flags & E1000_TX_FLAGS_HWTSTAMP)) { |
|
5421 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
5422 txd_upper |= E1000_TXD_EXTCMD_TSTAMP; |
|
5423 } |
|
5424 |
|
5425 i = tx_ring->next_to_use; |
|
5426 |
|
5427 do { |
|
5428 buffer_info = &tx_ring->buffer_info[i]; |
|
5429 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
5430 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
5431 tx_desc->lower.data = cpu_to_le32(txd_lower | |
|
5432 buffer_info->length); |
|
5433 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
5434 |
|
5435 i++; |
|
5436 if (i == tx_ring->count) |
|
5437 i = 0; |
|
5438 } while (--count > 0); |
|
5439 |
|
5440 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
5441 |
|
5442 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ |
|
5443 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
5444 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); |
|
5445 |
|
5446 /* Force memory writes to complete before letting h/w |
|
5447 * know there are new descriptors to fetch. (Only |
|
5448 * applicable for weak-ordered memory model archs, |
|
5449 * such as IA-64). |
|
5450 */ |
|
5451 wmb(); |
|
5452 |
|
5453 tx_ring->next_to_use = i; |
|
5454 |
|
5455 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
5456 e1000e_update_tdt_wa(tx_ring, i); |
|
5457 else |
|
5458 writel(i, tx_ring->tail); |
|
5459 |
|
5460 /* we need this if more than one processor can write to our tail |
|
5461 * at a time, it synchronizes IO on IA64/Altix systems |
|
5462 */ |
|
5463 mmiowb(); |
|
5464 } |
|
5465 |
|
5466 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
5467 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
5468 struct sk_buff *skb) |
|
5469 { |
|
5470 struct e1000_hw *hw = &adapter->hw; |
|
5471 u16 length, offset; |
|
5472 |
|
5473 if (vlan_tx_tag_present(skb) && |
|
5474 !((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
5475 (adapter->hw.mng_cookie.status & |
|
5476 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
|
5477 return 0; |
|
5478 |
|
5479 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) |
|
5480 return 0; |
|
5481 |
|
5482 if (((struct ethhdr *)skb->data)->h_proto != htons(ETH_P_IP)) |
|
5483 return 0; |
|
5484 |
|
5485 { |
|
5486 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data + 14); |
|
5487 struct udphdr *udp; |
|
5488 |
|
5489 if (ip->protocol != IPPROTO_UDP) |
|
5490 return 0; |
|
5491 |
|
5492 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
|
5493 if (ntohs(udp->dest) != 67) |
|
5494 return 0; |
|
5495 |
|
5496 offset = (u8 *)udp + 8 - skb->data; |
|
5497 length = skb->len - offset; |
|
5498 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); |
|
5499 } |
|
5500 |
|
5501 return 0; |
|
5502 } |
|
5503 |
|
5504 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5505 { |
|
5506 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5507 |
|
5508 netif_stop_queue(adapter->netdev); |
|
5509 /* Herbert's original patch had: |
|
5510 * smp_mb__after_netif_stop_queue(); |
|
5511 * but since that doesn't exist yet, just open code it. |
|
5512 */ |
|
5513 smp_mb(); |
|
5514 |
|
5515 /* We need to check again in a case another CPU has just |
|
5516 * made room available. |
|
5517 */ |
|
5518 if (e1000_desc_unused(tx_ring) < size) |
|
5519 return -EBUSY; |
|
5520 |
|
5521 /* A reprieve! */ |
|
5522 netif_start_queue(adapter->netdev); |
|
5523 ++adapter->restart_queue; |
|
5524 return 0; |
|
5525 } |
|
5526 |
|
5527 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5528 { |
|
5529 BUG_ON(size > tx_ring->count); |
|
5530 |
|
5531 if (e1000_desc_unused(tx_ring) >= size) |
|
5532 return 0; |
|
5533 return __e1000_maybe_stop_tx(tx_ring, size); |
|
5534 } |
|
5535 |
|
5536 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
5537 struct net_device *netdev) |
|
5538 { |
|
5539 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5540 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
5541 unsigned int first; |
|
5542 unsigned int tx_flags = 0; |
|
5543 unsigned int len = skb_headlen(skb); |
|
5544 unsigned int nr_frags; |
|
5545 unsigned int mss; |
|
5546 int count = 0; |
|
5547 int tso; |
|
5548 unsigned int f; |
|
5549 |
|
5550 if (test_bit(__E1000_DOWN, &adapter->state)) { |
|
5551 dev_kfree_skb_any(skb); |
|
5552 return NETDEV_TX_OK; |
|
5553 } |
|
5554 |
|
5555 if (skb->len <= 0) { |
|
5556 dev_kfree_skb_any(skb); |
|
5557 return NETDEV_TX_OK; |
|
5558 } |
|
5559 |
|
5560 /* The minimum packet size with TCTL.PSP set is 17 bytes so |
|
5561 * pad skb in order to meet this minimum size requirement |
|
5562 */ |
|
5563 if (unlikely(skb->len < 17)) { |
|
5564 if (skb_pad(skb, 17 - skb->len)) |
|
5565 return NETDEV_TX_OK; |
|
5566 skb->len = 17; |
|
5567 skb_set_tail_pointer(skb, 17); |
|
5568 } |
|
5569 |
|
5570 mss = skb_shinfo(skb)->gso_size; |
|
5571 if (mss) { |
|
5572 u8 hdr_len; |
|
5573 |
|
5574 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
5575 * points to just header, pull a few bytes of payload from |
|
5576 * frags into skb->data |
|
5577 */ |
|
5578 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
5579 /* we do this workaround for ES2LAN, but it is un-necessary, |
|
5580 * avoiding it could save a lot of cycles |
|
5581 */ |
|
5582 if (skb->data_len && (hdr_len == len)) { |
|
5583 unsigned int pull_size; |
|
5584 |
|
5585 pull_size = min_t(unsigned int, 4, skb->data_len); |
|
5586 if (!__pskb_pull_tail(skb, pull_size)) { |
|
5587 e_err("__pskb_pull_tail failed.\n"); |
|
5588 dev_kfree_skb_any(skb); |
|
5589 return NETDEV_TX_OK; |
|
5590 } |
|
5591 len = skb_headlen(skb); |
|
5592 } |
|
5593 } |
|
5594 |
|
5595 /* reserve a descriptor for the offload context */ |
|
5596 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
5597 count++; |
|
5598 count++; |
|
5599 |
|
5600 count += DIV_ROUND_UP(len, adapter->tx_fifo_limit); |
|
5601 |
|
5602 nr_frags = skb_shinfo(skb)->nr_frags; |
|
5603 for (f = 0; f < nr_frags; f++) |
|
5604 count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
|
5605 adapter->tx_fifo_limit); |
|
5606 |
|
5607 if (adapter->hw.mac.tx_pkt_filtering) |
|
5608 e1000_transfer_dhcp_info(adapter, skb); |
|
5609 |
|
5610 /* need: count + 2 desc gap to keep tail from touching |
|
5611 * head, otherwise try next time |
|
5612 */ |
|
5613 if (e1000_maybe_stop_tx(tx_ring, count + 2)) |
|
5614 return NETDEV_TX_BUSY; |
|
5615 |
|
5616 if (vlan_tx_tag_present(skb)) { |
|
5617 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
5618 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
5619 } |
|
5620 |
|
5621 first = tx_ring->next_to_use; |
|
5622 |
|
5623 tso = e1000_tso(tx_ring, skb); |
|
5624 if (tso < 0) { |
|
5625 dev_kfree_skb_any(skb); |
|
5626 return NETDEV_TX_OK; |
|
5627 } |
|
5628 |
|
5629 if (tso) |
|
5630 tx_flags |= E1000_TX_FLAGS_TSO; |
|
5631 else if (e1000_tx_csum(tx_ring, skb)) |
|
5632 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
5633 |
|
5634 /* Old method was to assume IPv4 packet by default if TSO was enabled. |
|
5635 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
5636 * no longer assume, we must. |
|
5637 */ |
|
5638 if (skb->protocol == htons(ETH_P_IP)) |
|
5639 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
5640 |
|
5641 if (unlikely(skb->no_fcs)) |
|
5642 tx_flags |= E1000_TX_FLAGS_NO_FCS; |
|
5643 |
|
5644 /* if count is 0 then mapping error has occurred */ |
|
5645 count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit, |
|
5646 nr_frags); |
|
5647 if (count) { |
|
5648 if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && |
|
5649 !adapter->tx_hwtstamp_skb)) { |
|
5650 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
|
5651 tx_flags |= E1000_TX_FLAGS_HWTSTAMP; |
|
5652 adapter->tx_hwtstamp_skb = skb_get(skb); |
|
5653 adapter->tx_hwtstamp_start = jiffies; |
|
5654 schedule_work(&adapter->tx_hwtstamp_work); |
|
5655 } else { |
|
5656 skb_tx_timestamp(skb); |
|
5657 } |
|
5658 |
|
5659 netdev_sent_queue(netdev, skb->len); |
|
5660 e1000_tx_queue(tx_ring, tx_flags, count); |
|
5661 /* Make sure there is space in the ring for the next send. */ |
|
5662 e1000_maybe_stop_tx(tx_ring, |
|
5663 (MAX_SKB_FRAGS * |
|
5664 DIV_ROUND_UP(PAGE_SIZE, |
|
5665 adapter->tx_fifo_limit) + 2)); |
|
5666 } else { |
|
5667 dev_kfree_skb_any(skb); |
|
5668 tx_ring->buffer_info[first].time_stamp = 0; |
|
5669 tx_ring->next_to_use = first; |
|
5670 } |
|
5671 |
|
5672 return NETDEV_TX_OK; |
|
5673 } |
|
5674 |
|
5675 /** |
|
5676 * e1000_tx_timeout - Respond to a Tx Hang |
|
5677 * @netdev: network interface device structure |
|
5678 **/ |
|
5679 static void e1000_tx_timeout(struct net_device *netdev) |
|
5680 { |
|
5681 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5682 |
|
5683 /* Do the reset outside of interrupt context */ |
|
5684 adapter->tx_timeout_count++; |
|
5685 schedule_work(&adapter->reset_task); |
|
5686 } |
|
5687 |
|
5688 static void e1000_reset_task(struct work_struct *work) |
|
5689 { |
|
5690 struct e1000_adapter *adapter; |
|
5691 adapter = container_of(work, struct e1000_adapter, reset_task); |
|
5692 |
|
5693 /* don't run the task if already down */ |
|
5694 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
5695 return; |
|
5696 |
|
5697 if (!(adapter->flags & FLAG_RESTART_NOW)) { |
|
5698 e1000e_dump(adapter); |
|
5699 e_err("Reset adapter unexpectedly\n"); |
|
5700 } |
|
5701 e1000e_reinit_locked(adapter); |
|
5702 } |
|
5703 |
|
5704 /** |
|
5705 * e1000_get_stats64 - Get System Network Statistics |
|
5706 * @netdev: network interface device structure |
|
5707 * @stats: rtnl_link_stats64 pointer |
|
5708 * |
|
5709 * Returns the address of the device statistics structure. |
|
5710 **/ |
|
5711 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
|
5712 struct rtnl_link_stats64 *stats) |
|
5713 { |
|
5714 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5715 |
|
5716 memset(stats, 0, sizeof(struct rtnl_link_stats64)); |
|
5717 spin_lock(&adapter->stats64_lock); |
|
5718 e1000e_update_stats(adapter); |
|
5719 /* Fill out the OS statistics structure */ |
|
5720 stats->rx_bytes = adapter->stats.gorc; |
|
5721 stats->rx_packets = adapter->stats.gprc; |
|
5722 stats->tx_bytes = adapter->stats.gotc; |
|
5723 stats->tx_packets = adapter->stats.gptc; |
|
5724 stats->multicast = adapter->stats.mprc; |
|
5725 stats->collisions = adapter->stats.colc; |
|
5726 |
|
5727 /* Rx Errors */ |
|
5728 |
|
5729 /* RLEC on some newer hardware can be incorrect so build |
|
5730 * our own version based on RUC and ROC |
|
5731 */ |
|
5732 stats->rx_errors = adapter->stats.rxerrc + |
|
5733 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
5734 adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; |
|
5735 stats->rx_length_errors = adapter->stats.ruc + adapter->stats.roc; |
|
5736 stats->rx_crc_errors = adapter->stats.crcerrs; |
|
5737 stats->rx_frame_errors = adapter->stats.algnerrc; |
|
5738 stats->rx_missed_errors = adapter->stats.mpc; |
|
5739 |
|
5740 /* Tx Errors */ |
|
5741 stats->tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
|
5742 stats->tx_aborted_errors = adapter->stats.ecol; |
|
5743 stats->tx_window_errors = adapter->stats.latecol; |
|
5744 stats->tx_carrier_errors = adapter->stats.tncrs; |
|
5745 |
|
5746 /* Tx Dropped needs to be maintained elsewhere */ |
|
5747 |
|
5748 spin_unlock(&adapter->stats64_lock); |
|
5749 return stats; |
|
5750 } |
|
5751 |
|
5752 /** |
|
5753 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
5754 * @netdev: network interface device structure |
|
5755 * @new_mtu: new value for maximum frame size |
|
5756 * |
|
5757 * Returns 0 on success, negative on failure |
|
5758 **/ |
|
5759 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
5760 { |
|
5761 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5762 int max_frame = new_mtu + VLAN_HLEN + ETH_HLEN + ETH_FCS_LEN; |
|
5763 |
|
5764 /* Jumbo frame support */ |
|
5765 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
|
5766 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { |
|
5767 e_err("Jumbo Frames not supported.\n"); |
|
5768 return -EINVAL; |
|
5769 } |
|
5770 |
|
5771 /* Supported frame sizes */ |
|
5772 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
|
5773 (max_frame > adapter->max_hw_frame_size)) { |
|
5774 e_err("Unsupported MTU setting\n"); |
|
5775 return -EINVAL; |
|
5776 } |
|
5777 |
|
5778 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */ |
|
5779 if ((adapter->hw.mac.type >= e1000_pch2lan) && |
|
5780 !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
|
5781 (new_mtu > ETH_DATA_LEN)) { |
|
5782 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n"); |
|
5783 return -EINVAL; |
|
5784 } |
|
5785 |
|
5786 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
5787 usleep_range(1000, 2000); |
|
5788 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
|
5789 adapter->max_frame_size = max_frame; |
|
5790 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
|
5791 netdev->mtu = new_mtu; |
|
5792 |
|
5793 pm_runtime_get_sync(netdev->dev.parent); |
|
5794 |
|
5795 if (netif_running(netdev)) |
|
5796 e1000e_down(adapter, true); |
|
5797 |
|
5798 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
5799 * means we reserve 2 more, this pushes us to allocate from the next |
|
5800 * larger slab size. |
|
5801 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
5802 * However with the new *_jumbo_rx* routines, jumbo receives will use |
|
5803 * fragmented skbs |
|
5804 */ |
|
5805 |
|
5806 if (max_frame <= 2048) |
|
5807 adapter->rx_buffer_len = 2048; |
|
5808 else |
|
5809 adapter->rx_buffer_len = 4096; |
|
5810 |
|
5811 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
5812 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
|
5813 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
|
5814 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
|
5815 + ETH_FCS_LEN; |
|
5816 |
|
5817 if (netif_running(netdev)) |
|
5818 e1000e_up(adapter); |
|
5819 else |
|
5820 e1000e_reset(adapter); |
|
5821 |
|
5822 pm_runtime_put_sync(netdev->dev.parent); |
|
5823 |
|
5824 clear_bit(__E1000_RESETTING, &adapter->state); |
|
5825 |
|
5826 return 0; |
|
5827 } |
|
5828 |
|
5829 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
5830 int cmd) |
|
5831 { |
|
5832 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5833 struct mii_ioctl_data *data = if_mii(ifr); |
|
5834 |
|
5835 if (adapter->hw.phy.media_type != e1000_media_type_copper) |
|
5836 return -EOPNOTSUPP; |
|
5837 |
|
5838 switch (cmd) { |
|
5839 case SIOCGMIIPHY: |
|
5840 data->phy_id = adapter->hw.phy.addr; |
|
5841 break; |
|
5842 case SIOCGMIIREG: |
|
5843 e1000_phy_read_status(adapter); |
|
5844 |
|
5845 switch (data->reg_num & 0x1F) { |
|
5846 case MII_BMCR: |
|
5847 data->val_out = adapter->phy_regs.bmcr; |
|
5848 break; |
|
5849 case MII_BMSR: |
|
5850 data->val_out = adapter->phy_regs.bmsr; |
|
5851 break; |
|
5852 case MII_PHYSID1: |
|
5853 data->val_out = (adapter->hw.phy.id >> 16); |
|
5854 break; |
|
5855 case MII_PHYSID2: |
|
5856 data->val_out = (adapter->hw.phy.id & 0xFFFF); |
|
5857 break; |
|
5858 case MII_ADVERTISE: |
|
5859 data->val_out = adapter->phy_regs.advertise; |
|
5860 break; |
|
5861 case MII_LPA: |
|
5862 data->val_out = adapter->phy_regs.lpa; |
|
5863 break; |
|
5864 case MII_EXPANSION: |
|
5865 data->val_out = adapter->phy_regs.expansion; |
|
5866 break; |
|
5867 case MII_CTRL1000: |
|
5868 data->val_out = adapter->phy_regs.ctrl1000; |
|
5869 break; |
|
5870 case MII_STAT1000: |
|
5871 data->val_out = adapter->phy_regs.stat1000; |
|
5872 break; |
|
5873 case MII_ESTATUS: |
|
5874 data->val_out = adapter->phy_regs.estatus; |
|
5875 break; |
|
5876 default: |
|
5877 return -EIO; |
|
5878 } |
|
5879 break; |
|
5880 case SIOCSMIIREG: |
|
5881 default: |
|
5882 return -EOPNOTSUPP; |
|
5883 } |
|
5884 return 0; |
|
5885 } |
|
5886 |
|
5887 /** |
|
5888 * e1000e_hwtstamp_ioctl - control hardware time stamping |
|
5889 * @netdev: network interface device structure |
|
5890 * @ifreq: interface request |
|
5891 * |
|
5892 * Outgoing time stamping can be enabled and disabled. Play nice and |
|
5893 * disable it when requested, although it shouldn't cause any overhead |
|
5894 * when no packet needs it. At most one packet in the queue may be |
|
5895 * marked for time stamping, otherwise it would be impossible to tell |
|
5896 * for sure to which packet the hardware time stamp belongs. |
|
5897 * |
|
5898 * Incoming time stamping has to be configured via the hardware filters. |
|
5899 * Not all combinations are supported, in particular event type has to be |
|
5900 * specified. Matching the kind of event packet is not supported, with the |
|
5901 * exception of "all V2 events regardless of level 2 or 4". |
|
5902 **/ |
|
5903 static int e1000e_hwtstamp_set(struct net_device *netdev, struct ifreq *ifr) |
|
5904 { |
|
5905 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5906 struct hwtstamp_config config; |
|
5907 int ret_val; |
|
5908 |
|
5909 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) |
|
5910 return -EFAULT; |
|
5911 |
|
5912 ret_val = e1000e_config_hwtstamp(adapter, &config); |
|
5913 if (ret_val) |
|
5914 return ret_val; |
|
5915 |
|
5916 switch (config.rx_filter) { |
|
5917 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
|
5918 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
|
5919 case HWTSTAMP_FILTER_PTP_V2_SYNC: |
|
5920 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
|
5921 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
|
5922 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
|
5923 /* With V2 type filters which specify a Sync or Delay Request, |
|
5924 * Path Delay Request/Response messages are also time stamped |
|
5925 * by hardware so notify the caller the requested packets plus |
|
5926 * some others are time stamped. |
|
5927 */ |
|
5928 config.rx_filter = HWTSTAMP_FILTER_SOME; |
|
5929 break; |
|
5930 default: |
|
5931 break; |
|
5932 } |
|
5933 |
|
5934 return copy_to_user(ifr->ifr_data, &config, |
|
5935 sizeof(config)) ? -EFAULT : 0; |
|
5936 } |
|
5937 |
|
5938 static int e1000e_hwtstamp_get(struct net_device *netdev, struct ifreq *ifr) |
|
5939 { |
|
5940 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5941 |
|
5942 return copy_to_user(ifr->ifr_data, &adapter->hwtstamp_config, |
|
5943 sizeof(adapter->hwtstamp_config)) ? -EFAULT : 0; |
|
5944 } |
|
5945 |
|
5946 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
5947 { |
|
5948 switch (cmd) { |
|
5949 case SIOCGMIIPHY: |
|
5950 case SIOCGMIIREG: |
|
5951 case SIOCSMIIREG: |
|
5952 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
5953 case SIOCSHWTSTAMP: |
|
5954 return e1000e_hwtstamp_set(netdev, ifr); |
|
5955 case SIOCGHWTSTAMP: |
|
5956 return e1000e_hwtstamp_get(netdev, ifr); |
|
5957 default: |
|
5958 return -EOPNOTSUPP; |
|
5959 } |
|
5960 } |
|
5961 |
|
5962 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
|
5963 { |
|
5964 struct e1000_hw *hw = &adapter->hw; |
|
5965 u32 i, mac_reg, wuc; |
|
5966 u16 phy_reg, wuc_enable; |
|
5967 int retval; |
|
5968 |
|
5969 /* copy MAC RARs to PHY RARs */ |
|
5970 e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
|
5971 |
|
5972 retval = hw->phy.ops.acquire(hw); |
|
5973 if (retval) { |
|
5974 e_err("Could not acquire PHY\n"); |
|
5975 return retval; |
|
5976 } |
|
5977 |
|
5978 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ |
|
5979 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
5980 if (retval) |
|
5981 goto release; |
|
5982 |
|
5983 /* copy MAC MTA to PHY MTA - only needed for pchlan */ |
|
5984 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
|
5985 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); |
|
5986 hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
|
5987 (u16)(mac_reg & 0xFFFF)); |
|
5988 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, |
|
5989 (u16)((mac_reg >> 16) & 0xFFFF)); |
|
5990 } |
|
5991 |
|
5992 /* configure PHY Rx Control register */ |
|
5993 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
|
5994 mac_reg = er32(RCTL); |
|
5995 if (mac_reg & E1000_RCTL_UPE) |
|
5996 phy_reg |= BM_RCTL_UPE; |
|
5997 if (mac_reg & E1000_RCTL_MPE) |
|
5998 phy_reg |= BM_RCTL_MPE; |
|
5999 phy_reg &= ~(BM_RCTL_MO_MASK); |
|
6000 if (mac_reg & E1000_RCTL_MO_3) |
|
6001 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) |
|
6002 << BM_RCTL_MO_SHIFT); |
|
6003 if (mac_reg & E1000_RCTL_BAM) |
|
6004 phy_reg |= BM_RCTL_BAM; |
|
6005 if (mac_reg & E1000_RCTL_PMCF) |
|
6006 phy_reg |= BM_RCTL_PMCF; |
|
6007 mac_reg = er32(CTRL); |
|
6008 if (mac_reg & E1000_CTRL_RFCE) |
|
6009 phy_reg |= BM_RCTL_RFCE; |
|
6010 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
|
6011 |
|
6012 wuc = E1000_WUC_PME_EN; |
|
6013 if (wufc & (E1000_WUFC_MAG | E1000_WUFC_LNKC)) |
|
6014 wuc |= E1000_WUC_APME; |
|
6015 |
|
6016 /* enable PHY wakeup in MAC register */ |
|
6017 ew32(WUFC, wufc); |
|
6018 ew32(WUC, (E1000_WUC_PHY_WAKE | E1000_WUC_APMPME | |
|
6019 E1000_WUC_PME_STATUS | wuc)); |
|
6020 |
|
6021 /* configure and enable PHY wakeup in PHY registers */ |
|
6022 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
|
6023 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, wuc); |
|
6024 |
|
6025 /* activate PHY wakeup */ |
|
6026 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
|
6027 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
6028 if (retval) |
|
6029 e_err("Could not set PHY Host Wakeup bit\n"); |
|
6030 release: |
|
6031 hw->phy.ops.release(hw); |
|
6032 |
|
6033 return retval; |
|
6034 } |
|
6035 |
|
6036 static int e1000e_pm_freeze(struct device *dev) |
|
6037 { |
|
6038 struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); |
|
6039 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6040 |
|
6041 netif_device_detach(netdev); |
|
6042 |
|
6043 if (netif_running(netdev)) { |
|
6044 int count = E1000_CHECK_RESET_COUNT; |
|
6045 |
|
6046 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
6047 usleep_range(10000, 20000); |
|
6048 |
|
6049 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
6050 |
|
6051 /* Quiesce the device without resetting the hardware */ |
|
6052 e1000e_down(adapter, false); |
|
6053 e1000_free_irq(adapter); |
|
6054 } |
|
6055 e1000e_reset_interrupt_capability(adapter); |
|
6056 |
|
6057 /* Allow time for pending master requests to run */ |
|
6058 e1000e_disable_pcie_master(&adapter->hw); |
|
6059 |
|
6060 return 0; |
|
6061 } |
|
6062 |
|
6063 static int __e1000_shutdown(struct pci_dev *pdev, bool runtime) |
|
6064 { |
|
6065 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6066 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6067 struct e1000_hw *hw = &adapter->hw; |
|
6068 u32 ctrl, ctrl_ext, rctl, status; |
|
6069 /* Runtime suspend should only enable wakeup for link changes */ |
|
6070 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
|
6071 int retval = 0; |
|
6072 |
|
6073 status = er32(STATUS); |
|
6074 if (status & E1000_STATUS_LU) |
|
6075 wufc &= ~E1000_WUFC_LNKC; |
|
6076 |
|
6077 if (wufc) { |
|
6078 e1000_setup_rctl(adapter); |
|
6079 e1000e_set_rx_mode(netdev); |
|
6080 |
|
6081 /* turn on all-multi mode if wake on multicast is enabled */ |
|
6082 if (wufc & E1000_WUFC_MC) { |
|
6083 rctl = er32(RCTL); |
|
6084 rctl |= E1000_RCTL_MPE; |
|
6085 ew32(RCTL, rctl); |
|
6086 } |
|
6087 |
|
6088 ctrl = er32(CTRL); |
|
6089 ctrl |= E1000_CTRL_ADVD3WUC; |
|
6090 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) |
|
6091 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; |
|
6092 ew32(CTRL, ctrl); |
|
6093 |
|
6094 if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
|
6095 adapter->hw.phy.media_type == |
|
6096 e1000_media_type_internal_serdes) { |
|
6097 /* keep the laser running in D3 */ |
|
6098 ctrl_ext = er32(CTRL_EXT); |
|
6099 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
|
6100 ew32(CTRL_EXT, ctrl_ext); |
|
6101 } |
|
6102 |
|
6103 if (!runtime) |
|
6104 e1000e_power_up_phy(adapter); |
|
6105 |
|
6106 if (adapter->flags & FLAG_IS_ICH) |
|
6107 e1000_suspend_workarounds_ich8lan(&adapter->hw); |
|
6108 |
|
6109 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
6110 /* enable wakeup by the PHY */ |
|
6111 retval = e1000_init_phy_wakeup(adapter, wufc); |
|
6112 if (retval) |
|
6113 return retval; |
|
6114 } else { |
|
6115 /* enable wakeup by the MAC */ |
|
6116 ew32(WUFC, wufc); |
|
6117 ew32(WUC, E1000_WUC_PME_EN); |
|
6118 } |
|
6119 } else { |
|
6120 ew32(WUC, 0); |
|
6121 ew32(WUFC, 0); |
|
6122 |
|
6123 e1000_power_down_phy(adapter); |
|
6124 } |
|
6125 |
|
6126 if (adapter->hw.phy.type == e1000_phy_igp_3) { |
|
6127 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
|
6128 } else if (hw->mac.type == e1000_pch_lpt) { |
|
6129 if (!(wufc & (E1000_WUFC_EX | E1000_WUFC_MC | E1000_WUFC_BC))) |
|
6130 /* ULP does not support wake from unicast, multicast |
|
6131 * or broadcast. |
|
6132 */ |
|
6133 retval = e1000_enable_ulp_lpt_lp(hw, !runtime); |
|
6134 |
|
6135 if (retval) |
|
6136 return retval; |
|
6137 } |
|
6138 |
|
6139 |
|
6140 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
6141 * would have already happened in close and is redundant. |
|
6142 */ |
|
6143 e1000e_release_hw_control(adapter); |
|
6144 |
|
6145 pci_clear_master(pdev); |
|
6146 |
|
6147 /* The pci-e switch on some quad port adapters will report a |
|
6148 * correctable error when the MAC transitions from D0 to D3. To |
|
6149 * prevent this we need to mask off the correctable errors on the |
|
6150 * downstream port of the pci-e switch. |
|
6151 * |
|
6152 * We don't have the associated upstream bridge while assigning |
|
6153 * the PCI device into guest. For example, the KVM on power is |
|
6154 * one of the cases. |
|
6155 */ |
|
6156 if (adapter->flags & FLAG_IS_QUAD_PORT) { |
|
6157 struct pci_dev *us_dev = pdev->bus->self; |
|
6158 u16 devctl; |
|
6159 |
|
6160 if (!us_dev) |
|
6161 return 0; |
|
6162 |
|
6163 pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl); |
|
6164 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, |
|
6165 (devctl & ~PCI_EXP_DEVCTL_CERE)); |
|
6166 |
|
6167 pci_save_state(pdev); |
|
6168 pci_prepare_to_sleep(pdev); |
|
6169 |
|
6170 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl); |
|
6171 } |
|
6172 |
|
6173 return 0; |
|
6174 } |
|
6175 |
|
6176 /** |
|
6177 * e1000e_disable_aspm - Disable ASPM states |
|
6178 * @pdev: pointer to PCI device struct |
|
6179 * @state: bit-mask of ASPM states to disable |
|
6180 * |
|
6181 * Some devices *must* have certain ASPM states disabled per hardware errata. |
|
6182 **/ |
|
6183 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
6184 { |
|
6185 struct pci_dev *parent = pdev->bus->self; |
|
6186 u16 aspm_dis_mask = 0; |
|
6187 u16 pdev_aspmc, parent_aspmc; |
|
6188 |
|
6189 switch (state) { |
|
6190 case PCIE_LINK_STATE_L0S: |
|
6191 case PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1: |
|
6192 aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L0S; |
|
6193 /* fall-through - can't have L1 without L0s */ |
|
6194 case PCIE_LINK_STATE_L1: |
|
6195 aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L1; |
|
6196 break; |
|
6197 default: |
|
6198 return; |
|
6199 } |
|
6200 |
|
6201 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); |
|
6202 pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; |
|
6203 |
|
6204 if (parent) { |
|
6205 pcie_capability_read_word(parent, PCI_EXP_LNKCTL, |
|
6206 &parent_aspmc); |
|
6207 parent_aspmc &= PCI_EXP_LNKCTL_ASPMC; |
|
6208 } |
|
6209 |
|
6210 /* Nothing to do if the ASPM states to be disabled already are */ |
|
6211 if (!(pdev_aspmc & aspm_dis_mask) && |
|
6212 (!parent || !(parent_aspmc & aspm_dis_mask))) |
|
6213 return; |
|
6214 |
|
6215 dev_info(&pdev->dev, "Disabling ASPM %s %s\n", |
|
6216 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L0S) ? |
|
6217 "L0s" : "", |
|
6218 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L1) ? |
|
6219 "L1" : ""); |
|
6220 |
|
6221 #ifdef CONFIG_PCIEASPM |
|
6222 pci_disable_link_state_locked(pdev, state); |
|
6223 |
|
6224 /* Double-check ASPM control. If not disabled by the above, the |
|
6225 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is |
|
6226 * not enabled); override by writing PCI config space directly. |
|
6227 */ |
|
6228 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); |
|
6229 pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; |
|
6230 |
|
6231 if (!(aspm_dis_mask & pdev_aspmc)) |
|
6232 return; |
|
6233 #endif |
|
6234 |
|
6235 /* Both device and parent should have the same ASPM setting. |
|
6236 * Disable ASPM in downstream component first and then upstream. |
|
6237 */ |
|
6238 pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, aspm_dis_mask); |
|
6239 |
|
6240 if (parent) |
|
6241 pcie_capability_clear_word(parent, PCI_EXP_LNKCTL, |
|
6242 aspm_dis_mask); |
|
6243 } |
|
6244 |
|
6245 #ifdef CONFIG_PM |
|
6246 static int __e1000_resume(struct pci_dev *pdev) |
|
6247 { |
|
6248 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6249 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6250 struct e1000_hw *hw = &adapter->hw; |
|
6251 u16 aspm_disable_flag = 0; |
|
6252 |
|
6253 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6254 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6255 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6256 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6257 if (aspm_disable_flag) |
|
6258 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6259 |
|
6260 pci_set_master(pdev); |
|
6261 |
|
6262 if (hw->mac.type >= e1000_pch2lan) |
|
6263 e1000_resume_workarounds_pchlan(&adapter->hw); |
|
6264 |
|
6265 e1000e_power_up_phy(adapter); |
|
6266 |
|
6267 /* report the system wakeup cause from S3/S4 */ |
|
6268 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
6269 u16 phy_data; |
|
6270 |
|
6271 e1e_rphy(&adapter->hw, BM_WUS, &phy_data); |
|
6272 if (phy_data) { |
|
6273 e_info("PHY Wakeup cause - %s\n", |
|
6274 phy_data & E1000_WUS_EX ? "Unicast Packet" : |
|
6275 phy_data & E1000_WUS_MC ? "Multicast Packet" : |
|
6276 phy_data & E1000_WUS_BC ? "Broadcast Packet" : |
|
6277 phy_data & E1000_WUS_MAG ? "Magic Packet" : |
|
6278 phy_data & E1000_WUS_LNKC ? |
|
6279 "Link Status Change" : "other"); |
|
6280 } |
|
6281 e1e_wphy(&adapter->hw, BM_WUS, ~0); |
|
6282 } else { |
|
6283 u32 wus = er32(WUS); |
|
6284 |
|
6285 if (wus) { |
|
6286 e_info("MAC Wakeup cause - %s\n", |
|
6287 wus & E1000_WUS_EX ? "Unicast Packet" : |
|
6288 wus & E1000_WUS_MC ? "Multicast Packet" : |
|
6289 wus & E1000_WUS_BC ? "Broadcast Packet" : |
|
6290 wus & E1000_WUS_MAG ? "Magic Packet" : |
|
6291 wus & E1000_WUS_LNKC ? "Link Status Change" : |
|
6292 "other"); |
|
6293 } |
|
6294 ew32(WUS, ~0); |
|
6295 } |
|
6296 |
|
6297 e1000e_reset(adapter); |
|
6298 |
|
6299 e1000_init_manageability_pt(adapter); |
|
6300 |
|
6301 /* If the controller has AMT, do not set DRV_LOAD until the interface |
|
6302 * is up. For all other cases, let the f/w know that the h/w is now |
|
6303 * under the control of the driver. |
|
6304 */ |
|
6305 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6306 e1000e_get_hw_control(adapter); |
|
6307 |
|
6308 return 0; |
|
6309 } |
|
6310 |
|
6311 #ifdef CONFIG_PM_SLEEP |
|
6312 static int e1000e_pm_thaw(struct device *dev) |
|
6313 { |
|
6314 struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); |
|
6315 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6316 |
|
6317 e1000e_set_interrupt_capability(adapter); |
|
6318 if (netif_running(netdev)) { |
|
6319 u32 err = e1000_request_irq(adapter); |
|
6320 |
|
6321 if (err) |
|
6322 return err; |
|
6323 |
|
6324 e1000e_up(adapter); |
|
6325 } |
|
6326 |
|
6327 netif_device_attach(netdev); |
|
6328 |
|
6329 return 0; |
|
6330 } |
|
6331 |
|
6332 static int e1000e_pm_suspend(struct device *dev) |
|
6333 { |
|
6334 struct pci_dev *pdev = to_pci_dev(dev); |
|
6335 |
|
6336 e1000e_pm_freeze(dev); |
|
6337 |
|
6338 return __e1000_shutdown(pdev, false); |
|
6339 } |
|
6340 |
|
6341 static int e1000e_pm_resume(struct device *dev) |
|
6342 { |
|
6343 struct pci_dev *pdev = to_pci_dev(dev); |
|
6344 int rc; |
|
6345 |
|
6346 rc = __e1000_resume(pdev); |
|
6347 if (rc) |
|
6348 return rc; |
|
6349 |
|
6350 return e1000e_pm_thaw(dev); |
|
6351 } |
|
6352 #endif /* CONFIG_PM_SLEEP */ |
|
6353 |
|
6354 #ifdef CONFIG_PM_RUNTIME |
|
6355 static int e1000e_pm_runtime_idle(struct device *dev) |
|
6356 { |
|
6357 struct pci_dev *pdev = to_pci_dev(dev); |
|
6358 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6359 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6360 |
|
6361 if (!e1000e_has_link(adapter)) |
|
6362 pm_schedule_suspend(dev, 5 * MSEC_PER_SEC); |
|
6363 |
|
6364 return -EBUSY; |
|
6365 } |
|
6366 |
|
6367 static int e1000e_pm_runtime_resume(struct device *dev) |
|
6368 { |
|
6369 struct pci_dev *pdev = to_pci_dev(dev); |
|
6370 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6371 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6372 int rc; |
|
6373 |
|
6374 rc = __e1000_resume(pdev); |
|
6375 if (rc) |
|
6376 return rc; |
|
6377 |
|
6378 if (netdev->flags & IFF_UP) |
|
6379 rc = e1000e_up(adapter); |
|
6380 |
|
6381 return rc; |
|
6382 } |
|
6383 |
|
6384 static int e1000e_pm_runtime_suspend(struct device *dev) |
|
6385 { |
|
6386 struct pci_dev *pdev = to_pci_dev(dev); |
|
6387 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6388 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6389 |
|
6390 if (netdev->flags & IFF_UP) { |
|
6391 int count = E1000_CHECK_RESET_COUNT; |
|
6392 |
|
6393 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
6394 usleep_range(10000, 20000); |
|
6395 |
|
6396 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
6397 |
|
6398 /* Down the device without resetting the hardware */ |
|
6399 e1000e_down(adapter, false); |
|
6400 } |
|
6401 |
|
6402 if (__e1000_shutdown(pdev, true)) { |
|
6403 e1000e_pm_runtime_resume(dev); |
|
6404 return -EBUSY; |
|
6405 } |
|
6406 |
|
6407 return 0; |
|
6408 } |
|
6409 #endif /* CONFIG_PM_RUNTIME */ |
|
6410 #endif /* CONFIG_PM */ |
|
6411 |
|
6412 static void e1000_shutdown(struct pci_dev *pdev) |
|
6413 { |
|
6414 e1000e_pm_freeze(&pdev->dev); |
|
6415 |
|
6416 __e1000_shutdown(pdev, false); |
|
6417 } |
|
6418 |
|
6419 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
6420 |
|
6421 static irqreturn_t e1000_intr_msix(int __always_unused irq, void *data) |
|
6422 { |
|
6423 struct net_device *netdev = data; |
|
6424 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6425 |
|
6426 if (adapter->msix_entries) { |
|
6427 int vector, msix_irq; |
|
6428 |
|
6429 vector = 0; |
|
6430 msix_irq = adapter->msix_entries[vector].vector; |
|
6431 disable_irq(msix_irq); |
|
6432 e1000_intr_msix_rx(msix_irq, netdev); |
|
6433 enable_irq(msix_irq); |
|
6434 |
|
6435 vector++; |
|
6436 msix_irq = adapter->msix_entries[vector].vector; |
|
6437 disable_irq(msix_irq); |
|
6438 e1000_intr_msix_tx(msix_irq, netdev); |
|
6439 enable_irq(msix_irq); |
|
6440 |
|
6441 vector++; |
|
6442 msix_irq = adapter->msix_entries[vector].vector; |
|
6443 disable_irq(msix_irq); |
|
6444 e1000_msix_other(msix_irq, netdev); |
|
6445 enable_irq(msix_irq); |
|
6446 } |
|
6447 |
|
6448 return IRQ_HANDLED; |
|
6449 } |
|
6450 |
|
6451 /** |
|
6452 * e1000_netpoll |
|
6453 * @netdev: network interface device structure |
|
6454 * |
|
6455 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
6456 * without having to re-enable interrupts. It's not called while |
|
6457 * the interrupt routine is executing. |
|
6458 */ |
|
6459 static void e1000_netpoll(struct net_device *netdev) |
|
6460 { |
|
6461 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6462 |
|
6463 switch (adapter->int_mode) { |
|
6464 case E1000E_INT_MODE_MSIX: |
|
6465 e1000_intr_msix(adapter->pdev->irq, netdev); |
|
6466 break; |
|
6467 case E1000E_INT_MODE_MSI: |
|
6468 disable_irq(adapter->pdev->irq); |
|
6469 e1000_intr_msi(adapter->pdev->irq, netdev); |
|
6470 enable_irq(adapter->pdev->irq); |
|
6471 break; |
|
6472 default: /* E1000E_INT_MODE_LEGACY */ |
|
6473 disable_irq(adapter->pdev->irq); |
|
6474 e1000_intr(adapter->pdev->irq, netdev); |
|
6475 enable_irq(adapter->pdev->irq); |
|
6476 break; |
|
6477 } |
|
6478 } |
|
6479 #endif |
|
6480 |
|
6481 /** |
|
6482 * e1000_io_error_detected - called when PCI error is detected |
|
6483 * @pdev: Pointer to PCI device |
|
6484 * @state: The current pci connection state |
|
6485 * |
|
6486 * This function is called after a PCI bus error affecting |
|
6487 * this device has been detected. |
|
6488 */ |
|
6489 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
6490 pci_channel_state_t state) |
|
6491 { |
|
6492 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6493 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6494 |
|
6495 netif_device_detach(netdev); |
|
6496 |
|
6497 if (state == pci_channel_io_perm_failure) |
|
6498 return PCI_ERS_RESULT_DISCONNECT; |
|
6499 |
|
6500 if (netif_running(netdev)) |
|
6501 e1000e_down(adapter, true); |
|
6502 pci_disable_device(pdev); |
|
6503 |
|
6504 /* Request a slot slot reset. */ |
|
6505 return PCI_ERS_RESULT_NEED_RESET; |
|
6506 } |
|
6507 |
|
6508 /** |
|
6509 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
6510 * @pdev: Pointer to PCI device |
|
6511 * |
|
6512 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
6513 * resembles the first-half of the e1000e_pm_resume routine. |
|
6514 */ |
|
6515 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
6516 { |
|
6517 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6518 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6519 struct e1000_hw *hw = &adapter->hw; |
|
6520 u16 aspm_disable_flag = 0; |
|
6521 int err; |
|
6522 pci_ers_result_t result; |
|
6523 |
|
6524 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6525 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6526 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6527 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6528 if (aspm_disable_flag) |
|
6529 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6530 |
|
6531 err = pci_enable_device_mem(pdev); |
|
6532 if (err) { |
|
6533 dev_err(&pdev->dev, |
|
6534 "Cannot re-enable PCI device after reset.\n"); |
|
6535 result = PCI_ERS_RESULT_DISCONNECT; |
|
6536 } else { |
|
6537 pdev->state_saved = true; |
|
6538 pci_restore_state(pdev); |
|
6539 pci_set_master(pdev); |
|
6540 |
|
6541 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
6542 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
6543 |
|
6544 e1000e_reset(adapter); |
|
6545 ew32(WUS, ~0); |
|
6546 result = PCI_ERS_RESULT_RECOVERED; |
|
6547 } |
|
6548 |
|
6549 pci_cleanup_aer_uncorrect_error_status(pdev); |
|
6550 |
|
6551 return result; |
|
6552 } |
|
6553 |
|
6554 /** |
|
6555 * e1000_io_resume - called when traffic can start flowing again. |
|
6556 * @pdev: Pointer to PCI device |
|
6557 * |
|
6558 * This callback is called when the error recovery driver tells us that |
|
6559 * its OK to resume normal operation. Implementation resembles the |
|
6560 * second-half of the e1000e_pm_resume routine. |
|
6561 */ |
|
6562 static void e1000_io_resume(struct pci_dev *pdev) |
|
6563 { |
|
6564 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6565 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6566 |
|
6567 e1000_init_manageability_pt(adapter); |
|
6568 |
|
6569 if (netif_running(netdev)) { |
|
6570 if (e1000e_up(adapter)) { |
|
6571 dev_err(&pdev->dev, |
|
6572 "can't bring device back up after reset\n"); |
|
6573 return; |
|
6574 } |
|
6575 } |
|
6576 |
|
6577 netif_device_attach(netdev); |
|
6578 |
|
6579 /* If the controller has AMT, do not set DRV_LOAD until the interface |
|
6580 * is up. For all other cases, let the f/w know that the h/w is now |
|
6581 * under the control of the driver. |
|
6582 */ |
|
6583 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6584 e1000e_get_hw_control(adapter); |
|
6585 } |
|
6586 |
|
6587 static void e1000_print_device_info(struct e1000_adapter *adapter) |
|
6588 { |
|
6589 struct e1000_hw *hw = &adapter->hw; |
|
6590 struct net_device *netdev = adapter->netdev; |
|
6591 u32 ret_val; |
|
6592 u8 pba_str[E1000_PBANUM_LENGTH]; |
|
6593 |
|
6594 /* print bus type/speed/width info */ |
|
6595 e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
|
6596 /* bus width */ |
|
6597 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
|
6598 "Width x1"), |
|
6599 /* MAC address */ |
|
6600 netdev->dev_addr); |
|
6601 e_info("Intel(R) PRO/%s Network Connection\n", |
|
6602 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); |
|
6603 ret_val = e1000_read_pba_string_generic(hw, pba_str, |
|
6604 E1000_PBANUM_LENGTH); |
|
6605 if (ret_val) |
|
6606 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str)); |
|
6607 e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
|
6608 hw->mac.type, hw->phy.type, pba_str); |
|
6609 } |
|
6610 |
|
6611 static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
|
6612 { |
|
6613 struct e1000_hw *hw = &adapter->hw; |
|
6614 int ret_val; |
|
6615 u16 buf = 0; |
|
6616 |
|
6617 if (hw->mac.type != e1000_82573) |
|
6618 return; |
|
6619 |
|
6620 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); |
|
6621 le16_to_cpus(&buf); |
|
6622 if (!ret_val && (!(buf & (1 << 0)))) { |
|
6623 /* Deep Smart Power Down (DSPD) */ |
|
6624 dev_warn(&adapter->pdev->dev, |
|
6625 "Warning: detected DSPD enabled in EEPROM\n"); |
|
6626 } |
|
6627 } |
|
6628 |
|
6629 static int e1000_set_features(struct net_device *netdev, |
|
6630 netdev_features_t features) |
|
6631 { |
|
6632 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6633 netdev_features_t changed = features ^ netdev->features; |
|
6634 |
|
6635 if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) |
|
6636 adapter->flags |= FLAG_TSO_FORCE; |
|
6637 |
|
6638 if (!(changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX | |
|
6639 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | |
|
6640 NETIF_F_RXALL))) |
|
6641 return 0; |
|
6642 |
|
6643 if (changed & NETIF_F_RXFCS) { |
|
6644 if (features & NETIF_F_RXFCS) { |
|
6645 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6646 } else { |
|
6647 /* We need to take it back to defaults, which might mean |
|
6648 * stripping is still disabled at the adapter level. |
|
6649 */ |
|
6650 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING) |
|
6651 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
|
6652 else |
|
6653 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6654 } |
|
6655 } |
|
6656 |
|
6657 netdev->features = features; |
|
6658 |
|
6659 if (netif_running(netdev)) |
|
6660 e1000e_reinit_locked(adapter); |
|
6661 else |
|
6662 e1000e_reset(adapter); |
|
6663 |
|
6664 return 0; |
|
6665 } |
|
6666 |
|
6667 static const struct net_device_ops e1000e_netdev_ops = { |
|
6668 .ndo_open = e1000_open, |
|
6669 .ndo_stop = e1000_close, |
|
6670 .ndo_start_xmit = e1000_xmit_frame, |
|
6671 .ndo_get_stats64 = e1000e_get_stats64, |
|
6672 .ndo_set_rx_mode = e1000e_set_rx_mode, |
|
6673 .ndo_set_mac_address = e1000_set_mac, |
|
6674 .ndo_change_mtu = e1000_change_mtu, |
|
6675 .ndo_do_ioctl = e1000_ioctl, |
|
6676 .ndo_tx_timeout = e1000_tx_timeout, |
|
6677 .ndo_validate_addr = eth_validate_addr, |
|
6678 |
|
6679 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
6680 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
6681 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
6682 .ndo_poll_controller = e1000_netpoll, |
|
6683 #endif |
|
6684 .ndo_set_features = e1000_set_features, |
|
6685 }; |
|
6686 |
|
6687 /** |
|
6688 * e1000_probe - Device Initialization Routine |
|
6689 * @pdev: PCI device information struct |
|
6690 * @ent: entry in e1000_pci_tbl |
|
6691 * |
|
6692 * Returns 0 on success, negative on failure |
|
6693 * |
|
6694 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
6695 * The OS initialization, configuring of the adapter private structure, |
|
6696 * and a hardware reset occur. |
|
6697 **/ |
|
6698 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
|
6699 { |
|
6700 struct net_device *netdev; |
|
6701 struct e1000_adapter *adapter; |
|
6702 struct e1000_hw *hw; |
|
6703 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; |
|
6704 resource_size_t mmio_start, mmio_len; |
|
6705 resource_size_t flash_start, flash_len; |
|
6706 static int cards_found; |
|
6707 u16 aspm_disable_flag = 0; |
|
6708 int bars, i, err, pci_using_dac; |
|
6709 u16 eeprom_data = 0; |
|
6710 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
6711 |
|
6712 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6713 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6714 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6715 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6716 if (aspm_disable_flag) |
|
6717 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6718 |
|
6719 err = pci_enable_device_mem(pdev); |
|
6720 if (err) |
|
6721 return err; |
|
6722 |
|
6723 pci_using_dac = 0; |
|
6724 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
|
6725 if (!err) { |
|
6726 pci_using_dac = 1; |
|
6727 } else { |
|
6728 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
|
6729 if (err) { |
|
6730 dev_err(&pdev->dev, |
|
6731 "No usable DMA configuration, aborting\n"); |
|
6732 goto err_dma; |
|
6733 } |
|
6734 } |
|
6735 |
|
6736 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
6737 err = pci_request_selected_regions_exclusive(pdev, bars, |
|
6738 e1000e_driver_name); |
|
6739 if (err) |
|
6740 goto err_pci_reg; |
|
6741 |
|
6742 /* AER (Advanced Error Reporting) hooks */ |
|
6743 pci_enable_pcie_error_reporting(pdev); |
|
6744 |
|
6745 pci_set_master(pdev); |
|
6746 /* PCI config space info */ |
|
6747 err = pci_save_state(pdev); |
|
6748 if (err) |
|
6749 goto err_alloc_etherdev; |
|
6750 |
|
6751 err = -ENOMEM; |
|
6752 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
6753 if (!netdev) |
|
6754 goto err_alloc_etherdev; |
|
6755 |
|
6756 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
6757 |
|
6758 netdev->irq = pdev->irq; |
|
6759 |
|
6760 pci_set_drvdata(pdev, netdev); |
|
6761 adapter = netdev_priv(netdev); |
|
6762 hw = &adapter->hw; |
|
6763 adapter->netdev = netdev; |
|
6764 adapter->pdev = pdev; |
|
6765 adapter->ei = ei; |
|
6766 adapter->pba = ei->pba; |
|
6767 adapter->flags = ei->flags; |
|
6768 adapter->flags2 = ei->flags2; |
|
6769 adapter->hw.adapter = adapter; |
|
6770 adapter->hw.mac.type = ei->mac; |
|
6771 adapter->max_hw_frame_size = ei->max_hw_frame_size; |
|
6772 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
|
6773 |
|
6774 mmio_start = pci_resource_start(pdev, 0); |
|
6775 mmio_len = pci_resource_len(pdev, 0); |
|
6776 |
|
6777 err = -EIO; |
|
6778 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
6779 if (!adapter->hw.hw_addr) |
|
6780 goto err_ioremap; |
|
6781 |
|
6782 if ((adapter->flags & FLAG_HAS_FLASH) && |
|
6783 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
6784 flash_start = pci_resource_start(pdev, 1); |
|
6785 flash_len = pci_resource_len(pdev, 1); |
|
6786 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
6787 if (!adapter->hw.flash_address) |
|
6788 goto err_flashmap; |
|
6789 } |
|
6790 |
|
6791 /* Set default EEE advertisement */ |
|
6792 if (adapter->flags2 & FLAG2_HAS_EEE) |
|
6793 adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; |
|
6794 |
|
6795 /* construct the net_device struct */ |
|
6796 netdev->netdev_ops = &e1000e_netdev_ops; |
|
6797 e1000e_set_ethtool_ops(netdev); |
|
6798 netdev->watchdog_timeo = 5 * HZ; |
|
6799 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64); |
|
6800 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
|
6801 |
|
6802 netdev->mem_start = mmio_start; |
|
6803 netdev->mem_end = mmio_start + mmio_len; |
|
6804 |
|
6805 adapter->bd_number = cards_found++; |
|
6806 |
|
6807 e1000e_check_options(adapter); |
|
6808 |
|
6809 /* setup adapter struct */ |
|
6810 err = e1000_sw_init(adapter); |
|
6811 if (err) |
|
6812 goto err_sw_init; |
|
6813 |
|
6814 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
|
6815 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
|
6816 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
|
6817 |
|
6818 err = ei->get_variants(adapter); |
|
6819 if (err) |
|
6820 goto err_hw_init; |
|
6821 |
|
6822 if ((adapter->flags & FLAG_IS_ICH) && |
|
6823 (adapter->flags & FLAG_READ_ONLY_NVM)) |
|
6824 e1000e_write_protect_nvm_ich8lan(&adapter->hw); |
|
6825 |
|
6826 hw->mac.ops.get_bus_info(&adapter->hw); |
|
6827 |
|
6828 adapter->hw.phy.autoneg_wait_to_complete = 0; |
|
6829 |
|
6830 /* Copper options */ |
|
6831 if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
|
6832 adapter->hw.phy.mdix = AUTO_ALL_MODES; |
|
6833 adapter->hw.phy.disable_polarity_correction = 0; |
|
6834 adapter->hw.phy.ms_type = e1000_ms_hw_default; |
|
6835 } |
|
6836 |
|
6837 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw)) |
|
6838 dev_info(&pdev->dev, |
|
6839 "PHY reset is blocked due to SOL/IDER session.\n"); |
|
6840 |
|
6841 /* Set initial default active device features */ |
|
6842 netdev->features = (NETIF_F_SG | |
|
6843 NETIF_F_HW_VLAN_CTAG_RX | |
|
6844 NETIF_F_HW_VLAN_CTAG_TX | |
|
6845 NETIF_F_TSO | |
|
6846 NETIF_F_TSO6 | |
|
6847 NETIF_F_RXHASH | |
|
6848 NETIF_F_RXCSUM | |
|
6849 NETIF_F_HW_CSUM); |
|
6850 |
|
6851 /* Set user-changeable features (subset of all device features) */ |
|
6852 netdev->hw_features = netdev->features; |
|
6853 netdev->hw_features |= NETIF_F_RXFCS; |
|
6854 netdev->priv_flags |= IFF_SUPP_NOFCS; |
|
6855 netdev->hw_features |= NETIF_F_RXALL; |
|
6856 |
|
6857 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
6858 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
|
6859 |
|
6860 netdev->vlan_features |= (NETIF_F_SG | |
|
6861 NETIF_F_TSO | |
|
6862 NETIF_F_TSO6 | |
|
6863 NETIF_F_HW_CSUM); |
|
6864 |
|
6865 netdev->priv_flags |= IFF_UNICAST_FLT; |
|
6866 |
|
6867 if (pci_using_dac) { |
|
6868 netdev->features |= NETIF_F_HIGHDMA; |
|
6869 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
6870 } |
|
6871 |
|
6872 if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
|
6873 adapter->flags |= FLAG_MNG_PT_ENABLED; |
|
6874 |
|
6875 /* before reading the NVM, reset the controller to |
|
6876 * put the device in a known good starting state |
|
6877 */ |
|
6878 adapter->hw.mac.ops.reset_hw(&adapter->hw); |
|
6879 |
|
6880 /* systems with ASPM and others may see the checksum fail on the first |
|
6881 * attempt. Let's give it a few tries |
|
6882 */ |
|
6883 for (i = 0;; i++) { |
|
6884 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) |
|
6885 break; |
|
6886 if (i == 2) { |
|
6887 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
|
6888 err = -EIO; |
|
6889 goto err_eeprom; |
|
6890 } |
|
6891 } |
|
6892 |
|
6893 e1000_eeprom_checks(adapter); |
|
6894 |
|
6895 /* copy the MAC address */ |
|
6896 if (e1000e_read_mac_addr(&adapter->hw)) |
|
6897 dev_err(&pdev->dev, |
|
6898 "NVM Read Error while reading MAC address\n"); |
|
6899 |
|
6900 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
6901 |
|
6902 if (!is_valid_ether_addr(netdev->dev_addr)) { |
|
6903 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
|
6904 netdev->dev_addr); |
|
6905 err = -EIO; |
|
6906 goto err_eeprom; |
|
6907 } |
|
6908 |
|
6909 init_timer(&adapter->watchdog_timer); |
|
6910 adapter->watchdog_timer.function = e1000_watchdog; |
|
6911 adapter->watchdog_timer.data = (unsigned long)adapter; |
|
6912 |
|
6913 init_timer(&adapter->phy_info_timer); |
|
6914 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
6915 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
6916 |
|
6917 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
6918 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); |
|
6919 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
|
6920 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); |
|
6921 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
|
6922 |
|
6923 /* Initialize link parameters. User can change them with ethtool */ |
|
6924 adapter->hw.mac.autoneg = 1; |
|
6925 adapter->fc_autoneg = true; |
|
6926 adapter->hw.fc.requested_mode = e1000_fc_default; |
|
6927 adapter->hw.fc.current_mode = e1000_fc_default; |
|
6928 adapter->hw.phy.autoneg_advertised = 0x2f; |
|
6929 |
|
6930 /* Initial Wake on LAN setting - If APM wake is enabled in |
|
6931 * the EEPROM, enable the ACPI Magic Packet filter |
|
6932 */ |
|
6933 if (adapter->flags & FLAG_APME_IN_WUC) { |
|
6934 /* APME bit in EEPROM is mapped to WUC.APME */ |
|
6935 eeprom_data = er32(WUC); |
|
6936 eeprom_apme_mask = E1000_WUC_APME; |
|
6937 if ((hw->mac.type > e1000_ich10lan) && |
|
6938 (eeprom_data & E1000_WUC_PHY_WAKE)) |
|
6939 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
|
6940 } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
|
6941 if (adapter->flags & FLAG_APME_CHECK_PORT_B && |
|
6942 (adapter->hw.bus.func == 1)) |
|
6943 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B, |
|
6944 1, &eeprom_data); |
|
6945 else |
|
6946 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A, |
|
6947 1, &eeprom_data); |
|
6948 } |
|
6949 |
|
6950 /* fetch WoL from EEPROM */ |
|
6951 if (eeprom_data & eeprom_apme_mask) |
|
6952 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
6953 |
|
6954 /* now that we have the eeprom settings, apply the special cases |
|
6955 * where the eeprom may be wrong or the board simply won't support |
|
6956 * wake on lan on a particular port |
|
6957 */ |
|
6958 if (!(adapter->flags & FLAG_HAS_WOL)) |
|
6959 adapter->eeprom_wol = 0; |
|
6960 |
|
6961 /* initialize the wol settings based on the eeprom settings */ |
|
6962 adapter->wol = adapter->eeprom_wol; |
|
6963 |
|
6964 /* make sure adapter isn't asleep if manageability is enabled */ |
|
6965 if (adapter->wol || (adapter->flags & FLAG_MNG_PT_ENABLED) || |
|
6966 (hw->mac.ops.check_mng_mode(hw))) |
|
6967 device_wakeup_enable(&pdev->dev); |
|
6968 |
|
6969 /* save off EEPROM version number */ |
|
6970 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
|
6971 |
|
6972 /* reset the hardware with the new settings */ |
|
6973 e1000e_reset(adapter); |
|
6974 |
|
6975 /* If the controller has AMT, do not set DRV_LOAD until the interface |
|
6976 * is up. For all other cases, let the f/w know that the h/w is now |
|
6977 * under the control of the driver. |
|
6978 */ |
|
6979 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6980 e1000e_get_hw_control(adapter); |
|
6981 |
|
6982 strlcpy(netdev->name, "eth%d", sizeof(netdev->name)); |
|
6983 err = register_netdev(netdev); |
|
6984 if (err) |
|
6985 goto err_register; |
|
6986 |
|
6987 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
6988 netif_carrier_off(netdev); |
|
6989 |
|
6990 /* init PTP hardware clock */ |
|
6991 e1000e_ptp_init(adapter); |
|
6992 |
|
6993 e1000_print_device_info(adapter); |
|
6994 |
|
6995 if (pci_dev_run_wake(pdev)) |
|
6996 pm_runtime_put_noidle(&pdev->dev); |
|
6997 |
|
6998 return 0; |
|
6999 |
|
7000 err_register: |
|
7001 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
7002 e1000e_release_hw_control(adapter); |
|
7003 err_eeprom: |
|
7004 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw)) |
|
7005 e1000_phy_hw_reset(&adapter->hw); |
|
7006 err_hw_init: |
|
7007 kfree(adapter->tx_ring); |
|
7008 kfree(adapter->rx_ring); |
|
7009 err_sw_init: |
|
7010 if (adapter->hw.flash_address) |
|
7011 iounmap(adapter->hw.flash_address); |
|
7012 e1000e_reset_interrupt_capability(adapter); |
|
7013 err_flashmap: |
|
7014 iounmap(adapter->hw.hw_addr); |
|
7015 err_ioremap: |
|
7016 free_netdev(netdev); |
|
7017 err_alloc_etherdev: |
|
7018 pci_release_selected_regions(pdev, |
|
7019 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
7020 err_pci_reg: |
|
7021 err_dma: |
|
7022 pci_disable_device(pdev); |
|
7023 return err; |
|
7024 } |
|
7025 |
|
7026 /** |
|
7027 * e1000_remove - Device Removal Routine |
|
7028 * @pdev: PCI device information struct |
|
7029 * |
|
7030 * e1000_remove is called by the PCI subsystem to alert the driver |
|
7031 * that it should release a PCI device. The could be caused by a |
|
7032 * Hot-Plug event, or because the driver is going to be removed from |
|
7033 * memory. |
|
7034 **/ |
|
7035 static void e1000_remove(struct pci_dev *pdev) |
|
7036 { |
|
7037 struct net_device *netdev = pci_get_drvdata(pdev); |
|
7038 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
7039 bool down = test_bit(__E1000_DOWN, &adapter->state); |
|
7040 |
|
7041 e1000e_ptp_remove(adapter); |
|
7042 |
|
7043 /* The timers may be rescheduled, so explicitly disable them |
|
7044 * from being rescheduled. |
|
7045 */ |
|
7046 if (!down) |
|
7047 set_bit(__E1000_DOWN, &adapter->state); |
|
7048 del_timer_sync(&adapter->watchdog_timer); |
|
7049 del_timer_sync(&adapter->phy_info_timer); |
|
7050 |
|
7051 cancel_work_sync(&adapter->reset_task); |
|
7052 cancel_work_sync(&adapter->watchdog_task); |
|
7053 cancel_work_sync(&adapter->downshift_task); |
|
7054 cancel_work_sync(&adapter->update_phy_task); |
|
7055 cancel_work_sync(&adapter->print_hang_task); |
|
7056 |
|
7057 if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { |
|
7058 cancel_work_sync(&adapter->tx_hwtstamp_work); |
|
7059 if (adapter->tx_hwtstamp_skb) { |
|
7060 dev_kfree_skb_any(adapter->tx_hwtstamp_skb); |
|
7061 adapter->tx_hwtstamp_skb = NULL; |
|
7062 } |
|
7063 } |
|
7064 |
|
7065 /* Don't lie to e1000_close() down the road. */ |
|
7066 if (!down) |
|
7067 clear_bit(__E1000_DOWN, &adapter->state); |
|
7068 unregister_netdev(netdev); |
|
7069 |
|
7070 if (pci_dev_run_wake(pdev)) |
|
7071 pm_runtime_get_noresume(&pdev->dev); |
|
7072 |
|
7073 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
7074 * would have already happened in close and is redundant. |
|
7075 */ |
|
7076 e1000e_release_hw_control(adapter); |
|
7077 |
|
7078 e1000e_reset_interrupt_capability(adapter); |
|
7079 kfree(adapter->tx_ring); |
|
7080 kfree(adapter->rx_ring); |
|
7081 |
|
7082 iounmap(adapter->hw.hw_addr); |
|
7083 if (adapter->hw.flash_address) |
|
7084 iounmap(adapter->hw.flash_address); |
|
7085 pci_release_selected_regions(pdev, |
|
7086 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
7087 |
|
7088 free_netdev(netdev); |
|
7089 |
|
7090 /* AER disable */ |
|
7091 pci_disable_pcie_error_reporting(pdev); |
|
7092 |
|
7093 pci_disable_device(pdev); |
|
7094 } |
|
7095 |
|
7096 /* PCI Error Recovery (ERS) */ |
|
7097 static const struct pci_error_handlers e1000_err_handler = { |
|
7098 .error_detected = e1000_io_error_detected, |
|
7099 .slot_reset = e1000_io_slot_reset, |
|
7100 .resume = e1000_io_resume, |
|
7101 }; |
|
7102 |
|
7103 static const struct pci_device_id e1000_pci_tbl[] = { |
|
7104 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
|
7105 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, |
|
7106 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, |
|
7107 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), |
|
7108 board_82571 }, |
|
7109 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
|
7110 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, |
|
7111 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
|
7112 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, |
|
7113 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, |
|
7114 |
|
7115 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
|
7116 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, |
|
7117 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, |
|
7118 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, |
|
7119 |
|
7120 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
|
7121 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, |
|
7122 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, |
|
7123 |
|
7124 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
|
7125 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
|
7126 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
|
7127 |
|
7128 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
|
7129 board_80003es2lan }, |
|
7130 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), |
|
7131 board_80003es2lan }, |
|
7132 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), |
|
7133 board_80003es2lan }, |
|
7134 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), |
|
7135 board_80003es2lan }, |
|
7136 |
|
7137 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
|
7138 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, |
|
7139 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, |
|
7140 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, |
|
7141 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, |
|
7142 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, |
|
7143 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, |
|
7144 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
|
7145 |
|
7146 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
|
7147 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, |
|
7148 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, |
|
7149 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, |
|
7150 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, |
|
7151 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
|
7152 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
|
7153 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, |
|
7154 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, |
|
7155 |
|
7156 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, |
|
7157 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, |
|
7158 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, |
|
7159 |
|
7160 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
|
7161 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, |
|
7162 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
|
7163 |
|
7164 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
|
7165 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, |
|
7166 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, |
|
7167 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, |
|
7168 |
|
7169 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
|
7170 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, |
|
7171 |
|
7172 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt }, |
|
7173 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt }, |
|
7174 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt }, |
|
7175 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt }, |
|
7176 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM2), board_pch_lpt }, |
|
7177 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V2), board_pch_lpt }, |
|
7178 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM3), board_pch_lpt }, |
|
7179 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V3), board_pch_lpt }, |
|
7180 |
|
7181 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ |
|
7182 }; |
|
7183 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
|
7184 |
|
7185 static const struct dev_pm_ops e1000_pm_ops = { |
|
7186 #ifdef CONFIG_PM_SLEEP |
|
7187 .suspend = e1000e_pm_suspend, |
|
7188 .resume = e1000e_pm_resume, |
|
7189 .freeze = e1000e_pm_freeze, |
|
7190 .thaw = e1000e_pm_thaw, |
|
7191 .poweroff = e1000e_pm_suspend, |
|
7192 .restore = e1000e_pm_resume, |
|
7193 #endif |
|
7194 SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend, e1000e_pm_runtime_resume, |
|
7195 e1000e_pm_runtime_idle) |
|
7196 }; |
|
7197 |
|
7198 /* PCI Device API Driver */ |
|
7199 static struct pci_driver e1000_driver = { |
|
7200 .name = e1000e_driver_name, |
|
7201 .id_table = e1000_pci_tbl, |
|
7202 .probe = e1000_probe, |
|
7203 .remove = e1000_remove, |
|
7204 .driver = { |
|
7205 .pm = &e1000_pm_ops, |
|
7206 }, |
|
7207 .shutdown = e1000_shutdown, |
|
7208 .err_handler = &e1000_err_handler |
|
7209 }; |
|
7210 |
|
7211 /** |
|
7212 * e1000_init_module - Driver Registration Routine |
|
7213 * |
|
7214 * e1000_init_module is the first routine called when the driver is |
|
7215 * loaded. All it does is register with the PCI subsystem. |
|
7216 **/ |
|
7217 static int __init e1000_init_module(void) |
|
7218 { |
|
7219 int ret; |
|
7220 |
|
7221 pr_info("Intel(R) PRO/1000 Network Driver - %s\n", |
|
7222 e1000e_driver_version); |
|
7223 pr_info("Copyright(c) 1999 - 2014 Intel Corporation.\n"); |
|
7224 ret = pci_register_driver(&e1000_driver); |
|
7225 |
|
7226 return ret; |
|
7227 } |
|
7228 module_init(e1000_init_module); |
|
7229 |
|
7230 /** |
|
7231 * e1000_exit_module - Driver Exit Cleanup Routine |
|
7232 * |
|
7233 * e1000_exit_module is called just before the driver is removed |
|
7234 * from memory. |
|
7235 **/ |
|
7236 static void __exit e1000_exit_module(void) |
|
7237 { |
|
7238 pci_unregister_driver(&e1000_driver); |
|
7239 } |
|
7240 module_exit(e1000_exit_module); |
|
7241 |
|
7242 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
|
7243 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); |
|
7244 MODULE_LICENSE("GPL"); |
|
7245 MODULE_VERSION(DRV_VERSION); |
|
7246 |
|
7247 /* netdev.c */ |