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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 * vim: noexpandtab |
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22 */ |
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23 |
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24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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25 |
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26 #include <linux/module.h> |
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27 #include <linux/types.h> |
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28 #include <linux/init.h> |
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29 #include <linux/pci.h> |
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30 #include <linux/vmalloc.h> |
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31 #include <linux/pagemap.h> |
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32 #include <linux/delay.h> |
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33 #include <linux/netdevice.h> |
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34 #include <linux/interrupt.h> |
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35 #include <linux/tcp.h> |
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36 #include <linux/ipv6.h> |
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37 #include <linux/slab.h> |
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38 #include <net/checksum.h> |
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39 #include <net/ip6_checksum.h> |
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40 #include <linux/ethtool.h> |
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41 #include <linux/if_vlan.h> |
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42 #include <linux/cpu.h> |
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43 #include <linux/smp.h> |
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44 #include <linux/pm_qos.h> |
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45 #include <linux/pm_runtime.h> |
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46 #include <linux/aer.h> |
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47 #include <linux/prefetch.h> |
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48 |
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49 #include "e1000-3.16-ethercat.h" |
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50 |
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51 #define DRV_EXTRAVERSION "-k-EtherCAT" |
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52 |
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53 #define DRV_VERSION "2.3.2" DRV_EXTRAVERSION |
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54 char e1000e_driver_name[] = "ec_e1000e"; |
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55 const char e1000e_driver_version[] = DRV_VERSION; |
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56 |
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57 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
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58 static int debug = -1; |
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59 module_param(debug, int, 0); |
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60 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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61 |
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62 static const struct e1000_info *e1000_info_tbl[] = { |
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63 [board_82571] = &e1000_82571_info, |
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64 [board_82572] = &e1000_82572_info, |
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65 [board_82573] = &e1000_82573_info, |
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66 [board_82574] = &e1000_82574_info, |
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67 [board_82583] = &e1000_82583_info, |
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68 [board_80003es2lan] = &e1000_es2_info, |
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69 [board_ich8lan] = &e1000_ich8_info, |
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70 [board_ich9lan] = &e1000_ich9_info, |
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71 [board_ich10lan] = &e1000_ich10_info, |
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72 [board_pchlan] = &e1000_pch_info, |
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73 [board_pch2lan] = &e1000_pch2_info, |
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74 [board_pch_lpt] = &e1000_pch_lpt_info, |
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75 }; |
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76 |
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77 struct e1000_reg_info { |
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78 u32 ofs; |
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79 char *name; |
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80 }; |
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81 |
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82 static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
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83 /* General Registers */ |
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84 {E1000_CTRL, "CTRL"}, |
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85 {E1000_STATUS, "STATUS"}, |
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86 {E1000_CTRL_EXT, "CTRL_EXT"}, |
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87 |
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88 /* Interrupt Registers */ |
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89 {E1000_ICR, "ICR"}, |
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90 |
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91 /* Rx Registers */ |
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92 {E1000_RCTL, "RCTL"}, |
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93 {E1000_RDLEN(0), "RDLEN"}, |
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94 {E1000_RDH(0), "RDH"}, |
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95 {E1000_RDT(0), "RDT"}, |
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96 {E1000_RDTR, "RDTR"}, |
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97 {E1000_RXDCTL(0), "RXDCTL"}, |
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98 {E1000_ERT, "ERT"}, |
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99 {E1000_RDBAL(0), "RDBAL"}, |
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100 {E1000_RDBAH(0), "RDBAH"}, |
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101 {E1000_RDFH, "RDFH"}, |
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102 {E1000_RDFT, "RDFT"}, |
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103 {E1000_RDFHS, "RDFHS"}, |
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104 {E1000_RDFTS, "RDFTS"}, |
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105 {E1000_RDFPC, "RDFPC"}, |
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106 |
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107 /* Tx Registers */ |
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108 {E1000_TCTL, "TCTL"}, |
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109 {E1000_TDBAL(0), "TDBAL"}, |
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110 {E1000_TDBAH(0), "TDBAH"}, |
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111 {E1000_TDLEN(0), "TDLEN"}, |
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112 {E1000_TDH(0), "TDH"}, |
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113 {E1000_TDT(0), "TDT"}, |
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114 {E1000_TIDV, "TIDV"}, |
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115 {E1000_TXDCTL(0), "TXDCTL"}, |
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116 {E1000_TADV, "TADV"}, |
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117 {E1000_TARC(0), "TARC"}, |
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118 {E1000_TDFH, "TDFH"}, |
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119 {E1000_TDFT, "TDFT"}, |
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120 {E1000_TDFHS, "TDFHS"}, |
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121 {E1000_TDFTS, "TDFTS"}, |
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122 {E1000_TDFPC, "TDFPC"}, |
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123 |
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124 /* List Terminator */ |
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125 {0, NULL} |
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126 }; |
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127 |
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128 /** |
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129 * __ew32_prepare - prepare to write to MAC CSR register on certain parts |
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130 * @hw: pointer to the HW structure |
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131 * |
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132 * When updating the MAC CSR registers, the Manageability Engine (ME) could |
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133 * be accessing the registers at the same time. Normally, this is handled in |
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134 * h/w by an arbiter but on some parts there is a bug that acknowledges Host |
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135 * accesses later than it should which could result in the register to have |
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136 * an incorrect value. Workaround this by checking the FWSM register which |
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137 * has bit 24 set while ME is accessing MAC CSR registers, wait if it is set |
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138 * and try again a number of times. |
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139 **/ |
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140 s32 __ew32_prepare(struct e1000_hw *hw) |
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141 { |
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142 s32 i = E1000_ICH_FWSM_PCIM2PCI_COUNT; |
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143 |
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144 while ((er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI) && --i) |
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145 udelay(50); |
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146 |
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147 return i; |
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148 } |
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149 |
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150 void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val) |
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151 { |
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152 if (hw->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
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153 __ew32_prepare(hw); |
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154 |
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155 writel(val, hw->hw_addr + reg); |
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156 } |
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157 |
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158 /** |
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159 * e1000_regdump - register printout routine |
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160 * @hw: pointer to the HW structure |
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161 * @reginfo: pointer to the register info table |
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162 **/ |
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163 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
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164 { |
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165 int n = 0; |
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166 char rname[16]; |
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167 u32 regs[8]; |
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168 |
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169 switch (reginfo->ofs) { |
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170 case E1000_RXDCTL(0): |
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171 for (n = 0; n < 2; n++) |
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172 regs[n] = __er32(hw, E1000_RXDCTL(n)); |
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173 break; |
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174 case E1000_TXDCTL(0): |
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175 for (n = 0; n < 2; n++) |
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176 regs[n] = __er32(hw, E1000_TXDCTL(n)); |
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177 break; |
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178 case E1000_TARC(0): |
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179 for (n = 0; n < 2; n++) |
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180 regs[n] = __er32(hw, E1000_TARC(n)); |
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181 break; |
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182 default: |
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183 pr_info("%-15s %08x\n", |
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184 reginfo->name, __er32(hw, reginfo->ofs)); |
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185 return; |
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186 } |
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187 |
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188 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); |
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189 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]); |
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190 } |
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191 |
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192 static void e1000e_dump_ps_pages(struct e1000_adapter *adapter, |
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193 struct e1000_buffer *bi) |
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194 { |
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195 int i; |
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196 struct e1000_ps_page *ps_page; |
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197 |
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198 for (i = 0; i < adapter->rx_ps_pages; i++) { |
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199 ps_page = &bi->ps_pages[i]; |
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200 |
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201 if (ps_page->page) { |
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202 pr_info("packet dump for ps_page %d:\n", i); |
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203 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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204 16, 1, page_address(ps_page->page), |
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205 PAGE_SIZE, true); |
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206 } |
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207 } |
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208 } |
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209 |
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210 /** |
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211 * e1000e_dump - Print registers, Tx-ring and Rx-ring |
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212 * @adapter: board private structure |
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213 **/ |
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214 static void e1000e_dump(struct e1000_adapter *adapter) |
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215 { |
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216 struct net_device *netdev = adapter->netdev; |
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217 struct e1000_hw *hw = &adapter->hw; |
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218 struct e1000_reg_info *reginfo; |
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219 struct e1000_ring *tx_ring = adapter->tx_ring; |
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220 struct e1000_tx_desc *tx_desc; |
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221 struct my_u0 { |
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222 __le64 a; |
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223 __le64 b; |
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224 } *u0; |
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225 struct e1000_buffer *buffer_info; |
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226 struct e1000_ring *rx_ring = adapter->rx_ring; |
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227 union e1000_rx_desc_packet_split *rx_desc_ps; |
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228 union e1000_rx_desc_extended *rx_desc; |
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229 struct my_u1 { |
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230 __le64 a; |
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231 __le64 b; |
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232 __le64 c; |
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233 __le64 d; |
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234 } *u1; |
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235 u32 staterr; |
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236 int i = 0; |
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237 |
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238 if (!netif_msg_hw(adapter)) |
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239 return; |
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240 |
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241 /* Print netdevice Info */ |
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242 if (netdev) { |
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243 dev_info(&adapter->pdev->dev, "Net device Info\n"); |
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244 pr_info("Device Name state trans_start last_rx\n"); |
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245 pr_info("%-15s %016lX %016lX %016lX\n", netdev->name, |
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246 netdev->state, netdev->trans_start, netdev->last_rx); |
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247 } |
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248 |
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249 /* Print Registers */ |
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250 dev_info(&adapter->pdev->dev, "Register Dump\n"); |
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251 pr_info(" Register Name Value\n"); |
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252 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
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253 reginfo->name; reginfo++) { |
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254 e1000_regdump(hw, reginfo); |
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255 } |
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256 |
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257 /* Print Tx Ring Summary */ |
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258 if (!netdev || !netif_running(netdev)) |
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259 return; |
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260 |
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261 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
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262 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
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263 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
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264 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", |
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265 0, tx_ring->next_to_use, tx_ring->next_to_clean, |
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266 (unsigned long long)buffer_info->dma, |
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267 buffer_info->length, |
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268 buffer_info->next_to_watch, |
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269 (unsigned long long)buffer_info->time_stamp); |
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270 |
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271 /* Print Tx Ring */ |
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272 if (!netif_msg_tx_done(adapter)) |
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273 goto rx_ring_summary; |
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274 |
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275 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
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276 |
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277 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) |
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278 * |
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279 * Legacy Transmit Descriptor |
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280 * +--------------------------------------------------------------+ |
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281 * 0 | Buffer Address [63:0] (Reserved on Write Back) | |
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282 * +--------------------------------------------------------------+ |
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283 * 8 | Special | CSS | Status | CMD | CSO | Length | |
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284 * +--------------------------------------------------------------+ |
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285 * 63 48 47 36 35 32 31 24 23 16 15 0 |
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286 * |
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287 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload |
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288 * 63 48 47 40 39 32 31 16 15 8 7 0 |
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289 * +----------------------------------------------------------------+ |
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290 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | |
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291 * +----------------------------------------------------------------+ |
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292 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | |
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293 * +----------------------------------------------------------------+ |
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294 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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295 * |
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296 * Extended Data Descriptor (DTYP=0x1) |
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297 * +----------------------------------------------------------------+ |
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298 * 0 | Buffer Address [63:0] | |
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299 * +----------------------------------------------------------------+ |
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300 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | |
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301 * +----------------------------------------------------------------+ |
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302 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 |
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303 */ |
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304 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n"); |
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305 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n"); |
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306 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n"); |
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307 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
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308 const char *next_desc; |
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309 tx_desc = E1000_TX_DESC(*tx_ring, i); |
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310 buffer_info = &tx_ring->buffer_info[i]; |
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311 u0 = (struct my_u0 *)tx_desc; |
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312 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
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313 next_desc = " NTC/U"; |
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314 else if (i == tx_ring->next_to_use) |
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315 next_desc = " NTU"; |
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316 else if (i == tx_ring->next_to_clean) |
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317 next_desc = " NTC"; |
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318 else |
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319 next_desc = ""; |
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320 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n", |
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321 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : |
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322 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), |
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323 i, |
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324 (unsigned long long)le64_to_cpu(u0->a), |
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325 (unsigned long long)le64_to_cpu(u0->b), |
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326 (unsigned long long)buffer_info->dma, |
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327 buffer_info->length, buffer_info->next_to_watch, |
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328 (unsigned long long)buffer_info->time_stamp, |
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329 buffer_info->skb, next_desc); |
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330 |
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331 if (netif_msg_pktdata(adapter) && buffer_info->skb) |
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332 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
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333 16, 1, buffer_info->skb->data, |
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334 buffer_info->skb->len, true); |
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335 } |
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336 |
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337 /* Print Rx Ring Summary */ |
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338 rx_ring_summary: |
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339 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
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340 pr_info("Queue [NTU] [NTC]\n"); |
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341 pr_info(" %5d %5X %5X\n", |
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342 0, rx_ring->next_to_use, rx_ring->next_to_clean); |
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343 |
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344 /* Print Rx Ring */ |
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345 if (!netif_msg_rx_status(adapter)) |
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346 return; |
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347 |
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348 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
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349 switch (adapter->rx_ps_pages) { |
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350 case 1: |
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351 case 2: |
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352 case 3: |
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353 /* [Extended] Packet Split Receive Descriptor Format |
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354 * |
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355 * +-----------------------------------------------------+ |
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356 * 0 | Buffer Address 0 [63:0] | |
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357 * +-----------------------------------------------------+ |
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358 * 8 | Buffer Address 1 [63:0] | |
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359 * +-----------------------------------------------------+ |
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360 * 16 | Buffer Address 2 [63:0] | |
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361 * +-----------------------------------------------------+ |
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362 * 24 | Buffer Address 3 [63:0] | |
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363 * +-----------------------------------------------------+ |
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364 */ |
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365 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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366 /* [Extended] Receive Descriptor (Write-Back) Format |
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367 * |
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368 * 63 48 47 32 31 13 12 8 7 4 3 0 |
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369 * +------------------------------------------------------+ |
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370 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | |
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371 * | Checksum | Ident | | Queue | | Type | |
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372 * +------------------------------------------------------+ |
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373 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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374 * +------------------------------------------------------+ |
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375 * 63 48 47 32 31 20 19 0 |
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376 */ |
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377 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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378 for (i = 0; i < rx_ring->count; i++) { |
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379 const char *next_desc; |
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380 buffer_info = &rx_ring->buffer_info[i]; |
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381 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); |
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382 u1 = (struct my_u1 *)rx_desc_ps; |
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383 staterr = |
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384 le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
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385 |
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386 if (i == rx_ring->next_to_use) |
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387 next_desc = " NTU"; |
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388 else if (i == rx_ring->next_to_clean) |
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389 next_desc = " NTC"; |
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390 else |
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391 next_desc = ""; |
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392 |
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393 if (staterr & E1000_RXD_STAT_DD) { |
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394 /* Descriptor Done */ |
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395 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n", |
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396 "RWB", i, |
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397 (unsigned long long)le64_to_cpu(u1->a), |
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398 (unsigned long long)le64_to_cpu(u1->b), |
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399 (unsigned long long)le64_to_cpu(u1->c), |
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400 (unsigned long long)le64_to_cpu(u1->d), |
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401 buffer_info->skb, next_desc); |
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402 } else { |
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403 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n", |
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404 "R ", i, |
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405 (unsigned long long)le64_to_cpu(u1->a), |
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406 (unsigned long long)le64_to_cpu(u1->b), |
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407 (unsigned long long)le64_to_cpu(u1->c), |
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408 (unsigned long long)le64_to_cpu(u1->d), |
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409 (unsigned long long)buffer_info->dma, |
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410 buffer_info->skb, next_desc); |
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411 |
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412 if (netif_msg_pktdata(adapter)) |
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413 e1000e_dump_ps_pages(adapter, |
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414 buffer_info); |
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415 } |
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416 } |
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417 break; |
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418 default: |
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419 case 0: |
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420 /* Extended Receive Descriptor (Read) Format |
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421 * |
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422 * +-----------------------------------------------------+ |
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423 * 0 | Buffer Address [63:0] | |
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424 * +-----------------------------------------------------+ |
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425 * 8 | Reserved | |
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426 * +-----------------------------------------------------+ |
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427 */ |
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428 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n"); |
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429 /* Extended Receive Descriptor (Write-Back) Format |
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430 * |
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431 * 63 48 47 32 31 24 23 4 3 0 |
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432 * +------------------------------------------------------+ |
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433 * | RSS Hash | | | | |
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434 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | |
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435 * | Packet | IP | | | Type | |
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436 * | Checksum | Ident | | | | |
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437 * +------------------------------------------------------+ |
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438 * 8 | VLAN Tag | Length | Extended Error | Extended Status | |
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439 * +------------------------------------------------------+ |
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440 * 63 48 47 32 31 20 19 0 |
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441 */ |
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442 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n"); |
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443 |
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444 for (i = 0; i < rx_ring->count; i++) { |
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445 const char *next_desc; |
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446 |
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447 buffer_info = &rx_ring->buffer_info[i]; |
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448 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
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449 u1 = (struct my_u1 *)rx_desc; |
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450 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
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451 |
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452 if (i == rx_ring->next_to_use) |
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453 next_desc = " NTU"; |
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454 else if (i == rx_ring->next_to_clean) |
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455 next_desc = " NTC"; |
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456 else |
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457 next_desc = ""; |
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458 |
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459 if (staterr & E1000_RXD_STAT_DD) { |
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460 /* Descriptor Done */ |
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461 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n", |
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462 "RWB", i, |
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463 (unsigned long long)le64_to_cpu(u1->a), |
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464 (unsigned long long)le64_to_cpu(u1->b), |
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465 buffer_info->skb, next_desc); |
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466 } else { |
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467 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n", |
|
468 "R ", i, |
|
469 (unsigned long long)le64_to_cpu(u1->a), |
|
470 (unsigned long long)le64_to_cpu(u1->b), |
|
471 (unsigned long long)buffer_info->dma, |
|
472 buffer_info->skb, next_desc); |
|
473 |
|
474 if (netif_msg_pktdata(adapter) && |
|
475 buffer_info->skb) |
|
476 print_hex_dump(KERN_INFO, "", |
|
477 DUMP_PREFIX_ADDRESS, 16, |
|
478 1, |
|
479 buffer_info->skb->data, |
|
480 adapter->rx_buffer_len, |
|
481 true); |
|
482 } |
|
483 } |
|
484 } |
|
485 } |
|
486 |
|
487 /** |
|
488 * e1000_desc_unused - calculate if we have unused descriptors |
|
489 **/ |
|
490 static int e1000_desc_unused(struct e1000_ring *ring) |
|
491 { |
|
492 if (ring->next_to_clean > ring->next_to_use) |
|
493 return ring->next_to_clean - ring->next_to_use - 1; |
|
494 |
|
495 return ring->count + ring->next_to_clean - ring->next_to_use - 1; |
|
496 } |
|
497 |
|
498 /** |
|
499 * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp |
|
500 * @adapter: board private structure |
|
501 * @hwtstamps: time stamp structure to update |
|
502 * @systim: unsigned 64bit system time value. |
|
503 * |
|
504 * Convert the system time value stored in the RX/TXSTMP registers into a |
|
505 * hwtstamp which can be used by the upper level time stamping functions. |
|
506 * |
|
507 * The 'systim_lock' spinlock is used to protect the consistency of the |
|
508 * system time value. This is needed because reading the 64 bit time |
|
509 * value involves reading two 32 bit registers. The first read latches the |
|
510 * value. |
|
511 **/ |
|
512 static void e1000e_systim_to_hwtstamp(struct e1000_adapter *adapter, |
|
513 struct skb_shared_hwtstamps *hwtstamps, |
|
514 u64 systim) |
|
515 { |
|
516 u64 ns; |
|
517 unsigned long flags; |
|
518 |
|
519 spin_lock_irqsave(&adapter->systim_lock, flags); |
|
520 ns = timecounter_cyc2time(&adapter->tc, systim); |
|
521 spin_unlock_irqrestore(&adapter->systim_lock, flags); |
|
522 |
|
523 memset(hwtstamps, 0, sizeof(*hwtstamps)); |
|
524 hwtstamps->hwtstamp = ns_to_ktime(ns); |
|
525 } |
|
526 |
|
527 /** |
|
528 * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp |
|
529 * @adapter: board private structure |
|
530 * @status: descriptor extended error and status field |
|
531 * @skb: particular skb to include time stamp |
|
532 * |
|
533 * If the time stamp is valid, convert it into the timecounter ns value |
|
534 * and store that result into the shhwtstamps structure which is passed |
|
535 * up the network stack. |
|
536 **/ |
|
537 static void e1000e_rx_hwtstamp(struct e1000_adapter *adapter, u32 status, |
|
538 struct sk_buff *skb) |
|
539 { |
|
540 struct e1000_hw *hw = &adapter->hw; |
|
541 u64 rxstmp; |
|
542 |
|
543 if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP) || |
|
544 !(status & E1000_RXDEXT_STATERR_TST) || |
|
545 !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) |
|
546 return; |
|
547 |
|
548 /* The Rx time stamp registers contain the time stamp. No other |
|
549 * received packet will be time stamped until the Rx time stamp |
|
550 * registers are read. Because only one packet can be time stamped |
|
551 * at a time, the register values must belong to this packet and |
|
552 * therefore none of the other additional attributes need to be |
|
553 * compared. |
|
554 */ |
|
555 rxstmp = (u64)er32(RXSTMPL); |
|
556 rxstmp |= (u64)er32(RXSTMPH) << 32; |
|
557 e1000e_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), rxstmp); |
|
558 |
|
559 adapter->flags2 &= ~FLAG2_CHECK_RX_HWTSTAMP; |
|
560 } |
|
561 |
|
562 /** |
|
563 * e1000_receive_skb - helper function to handle Rx indications |
|
564 * @adapter: board private structure |
|
565 * @staterr: descriptor extended error and status field as written by hardware |
|
566 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
567 * @skb: pointer to sk_buff to be indicated to stack |
|
568 **/ |
|
569 static void e1000_receive_skb(struct e1000_adapter *adapter, |
|
570 struct net_device *netdev, struct sk_buff *skb, |
|
571 u32 staterr, __le16 vlan) |
|
572 { |
|
573 u16 tag = le16_to_cpu(vlan); |
|
574 |
|
575 e1000e_rx_hwtstamp(adapter, staterr, skb); |
|
576 |
|
577 skb->protocol = eth_type_trans(skb, netdev); |
|
578 |
|
579 if (staterr & E1000_RXD_STAT_VP) |
|
580 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); |
|
581 |
|
582 napi_gro_receive(&adapter->napi, skb); |
|
583 } |
|
584 |
|
585 /** |
|
586 * e1000_rx_checksum - Receive Checksum Offload |
|
587 * @adapter: board private structure |
|
588 * @status_err: receive descriptor status and error fields |
|
589 * @csum: receive descriptor csum field |
|
590 * @sk_buff: socket buffer with received data |
|
591 **/ |
|
592 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
593 struct sk_buff *skb) |
|
594 { |
|
595 u16 status = (u16)status_err; |
|
596 u8 errors = (u8)(status_err >> 24); |
|
597 |
|
598 skb_checksum_none_assert(skb); |
|
599 |
|
600 /* Rx checksum disabled */ |
|
601 if (!(adapter->netdev->features & NETIF_F_RXCSUM)) |
|
602 return; |
|
603 |
|
604 /* Ignore Checksum bit is set */ |
|
605 if (status & E1000_RXD_STAT_IXSM) |
|
606 return; |
|
607 |
|
608 /* TCP/UDP checksum error bit or IP checksum error bit is set */ |
|
609 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) { |
|
610 /* let the stack verify checksum errors */ |
|
611 adapter->hw_csum_err++; |
|
612 return; |
|
613 } |
|
614 |
|
615 /* TCP/UDP Checksum has not been calculated */ |
|
616 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
617 return; |
|
618 |
|
619 /* It must be a TCP or UDP packet with a valid checksum */ |
|
620 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
621 adapter->hw_csum_good++; |
|
622 } |
|
623 |
|
624 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i) |
|
625 { |
|
626 struct e1000_adapter *adapter = rx_ring->adapter; |
|
627 struct e1000_hw *hw = &adapter->hw; |
|
628 s32 ret_val = __ew32_prepare(hw); |
|
629 |
|
630 writel(i, rx_ring->tail); |
|
631 |
|
632 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) { |
|
633 u32 rctl = er32(RCTL); |
|
634 |
|
635 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
636 e_err("ME firmware caused invalid RDT - resetting\n"); |
|
637 schedule_work(&adapter->reset_task); |
|
638 } |
|
639 } |
|
640 |
|
641 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i) |
|
642 { |
|
643 struct e1000_adapter *adapter = tx_ring->adapter; |
|
644 struct e1000_hw *hw = &adapter->hw; |
|
645 s32 ret_val = __ew32_prepare(hw); |
|
646 |
|
647 writel(i, tx_ring->tail); |
|
648 |
|
649 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) { |
|
650 u32 tctl = er32(TCTL); |
|
651 |
|
652 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
653 e_err("ME firmware caused invalid TDT - resetting\n"); |
|
654 schedule_work(&adapter->reset_task); |
|
655 } |
|
656 } |
|
657 |
|
658 /** |
|
659 * e1000_alloc_rx_buffers - Replace used receive buffers |
|
660 * @rx_ring: Rx descriptor ring |
|
661 **/ |
|
662 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring, |
|
663 int cleaned_count, gfp_t gfp) |
|
664 { |
|
665 struct e1000_adapter *adapter = rx_ring->adapter; |
|
666 struct net_device *netdev = adapter->netdev; |
|
667 struct pci_dev *pdev = adapter->pdev; |
|
668 union e1000_rx_desc_extended *rx_desc; |
|
669 struct e1000_buffer *buffer_info; |
|
670 struct sk_buff *skb; |
|
671 unsigned int i; |
|
672 unsigned int bufsz = adapter->rx_buffer_len; |
|
673 |
|
674 i = rx_ring->next_to_use; |
|
675 buffer_info = &rx_ring->buffer_info[i]; |
|
676 |
|
677 while (cleaned_count--) { |
|
678 skb = buffer_info->skb; |
|
679 if (skb) { |
|
680 skb_trim(skb, 0); |
|
681 goto map_skb; |
|
682 } |
|
683 |
|
684 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
685 if (!skb) { |
|
686 /* Better luck next round */ |
|
687 adapter->alloc_rx_buff_failed++; |
|
688 break; |
|
689 } |
|
690 |
|
691 buffer_info->skb = skb; |
|
692 map_skb: |
|
693 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
694 adapter->rx_buffer_len, |
|
695 DMA_FROM_DEVICE); |
|
696 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
697 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
698 adapter->rx_dma_failed++; |
|
699 break; |
|
700 } |
|
701 |
|
702 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
703 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
704 |
|
705 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
706 /* Force memory writes to complete before letting h/w |
|
707 * know there are new descriptors to fetch. (Only |
|
708 * applicable for weak-ordered memory model archs, |
|
709 * such as IA-64). |
|
710 */ |
|
711 wmb(); |
|
712 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
713 e1000e_update_rdt_wa(rx_ring, i); |
|
714 else |
|
715 writel(i, rx_ring->tail); |
|
716 } |
|
717 i++; |
|
718 if (i == rx_ring->count) |
|
719 i = 0; |
|
720 buffer_info = &rx_ring->buffer_info[i]; |
|
721 } |
|
722 |
|
723 rx_ring->next_to_use = i; |
|
724 } |
|
725 |
|
726 /** |
|
727 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
728 * @rx_ring: Rx descriptor ring |
|
729 **/ |
|
730 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring, |
|
731 int cleaned_count, gfp_t gfp) |
|
732 { |
|
733 struct e1000_adapter *adapter = rx_ring->adapter; |
|
734 struct net_device *netdev = adapter->netdev; |
|
735 struct pci_dev *pdev = adapter->pdev; |
|
736 union e1000_rx_desc_packet_split *rx_desc; |
|
737 struct e1000_buffer *buffer_info; |
|
738 struct e1000_ps_page *ps_page; |
|
739 struct sk_buff *skb; |
|
740 unsigned int i, j; |
|
741 |
|
742 i = rx_ring->next_to_use; |
|
743 buffer_info = &rx_ring->buffer_info[i]; |
|
744 |
|
745 while (cleaned_count--) { |
|
746 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
747 |
|
748 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
749 ps_page = &buffer_info->ps_pages[j]; |
|
750 if (j >= adapter->rx_ps_pages) { |
|
751 /* all unused desc entries get hw null ptr */ |
|
752 rx_desc->read.buffer_addr[j + 1] = |
|
753 ~cpu_to_le64(0); |
|
754 continue; |
|
755 } |
|
756 if (!ps_page->page) { |
|
757 ps_page->page = alloc_page(gfp); |
|
758 if (!ps_page->page) { |
|
759 adapter->alloc_rx_buff_failed++; |
|
760 goto no_buffers; |
|
761 } |
|
762 ps_page->dma = dma_map_page(&pdev->dev, |
|
763 ps_page->page, |
|
764 0, PAGE_SIZE, |
|
765 DMA_FROM_DEVICE); |
|
766 if (dma_mapping_error(&pdev->dev, |
|
767 ps_page->dma)) { |
|
768 dev_err(&adapter->pdev->dev, |
|
769 "Rx DMA page map failed\n"); |
|
770 adapter->rx_dma_failed++; |
|
771 goto no_buffers; |
|
772 } |
|
773 } |
|
774 /* Refresh the desc even if buffer_addrs |
|
775 * didn't change because each write-back |
|
776 * erases this info. |
|
777 */ |
|
778 rx_desc->read.buffer_addr[j + 1] = |
|
779 cpu_to_le64(ps_page->dma); |
|
780 } |
|
781 |
|
782 skb = __netdev_alloc_skb_ip_align(netdev, adapter->rx_ps_bsize0, |
|
783 gfp); |
|
784 |
|
785 if (!skb) { |
|
786 adapter->alloc_rx_buff_failed++; |
|
787 break; |
|
788 } |
|
789 |
|
790 buffer_info->skb = skb; |
|
791 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
|
792 adapter->rx_ps_bsize0, |
|
793 DMA_FROM_DEVICE); |
|
794 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
795 dev_err(&pdev->dev, "Rx DMA map failed\n"); |
|
796 adapter->rx_dma_failed++; |
|
797 /* cleanup skb */ |
|
798 dev_kfree_skb_any(skb); |
|
799 buffer_info->skb = NULL; |
|
800 break; |
|
801 } |
|
802 |
|
803 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
804 |
|
805 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
|
806 /* Force memory writes to complete before letting h/w |
|
807 * know there are new descriptors to fetch. (Only |
|
808 * applicable for weak-ordered memory model archs, |
|
809 * such as IA-64). |
|
810 */ |
|
811 wmb(); |
|
812 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
813 e1000e_update_rdt_wa(rx_ring, i << 1); |
|
814 else |
|
815 writel(i << 1, rx_ring->tail); |
|
816 } |
|
817 |
|
818 i++; |
|
819 if (i == rx_ring->count) |
|
820 i = 0; |
|
821 buffer_info = &rx_ring->buffer_info[i]; |
|
822 } |
|
823 |
|
824 no_buffers: |
|
825 rx_ring->next_to_use = i; |
|
826 } |
|
827 |
|
828 /** |
|
829 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
830 * @rx_ring: Rx descriptor ring |
|
831 * @cleaned_count: number of buffers to allocate this pass |
|
832 **/ |
|
833 |
|
834 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring, |
|
835 int cleaned_count, gfp_t gfp) |
|
836 { |
|
837 struct e1000_adapter *adapter = rx_ring->adapter; |
|
838 struct net_device *netdev = adapter->netdev; |
|
839 struct pci_dev *pdev = adapter->pdev; |
|
840 union e1000_rx_desc_extended *rx_desc; |
|
841 struct e1000_buffer *buffer_info; |
|
842 struct sk_buff *skb; |
|
843 unsigned int i; |
|
844 unsigned int bufsz = 256 - 16; /* for skb_reserve */ |
|
845 |
|
846 i = rx_ring->next_to_use; |
|
847 buffer_info = &rx_ring->buffer_info[i]; |
|
848 |
|
849 while (cleaned_count--) { |
|
850 skb = buffer_info->skb; |
|
851 if (skb) { |
|
852 skb_trim(skb, 0); |
|
853 goto check_page; |
|
854 } |
|
855 |
|
856 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
|
857 if (unlikely(!skb)) { |
|
858 /* Better luck next round */ |
|
859 adapter->alloc_rx_buff_failed++; |
|
860 break; |
|
861 } |
|
862 |
|
863 buffer_info->skb = skb; |
|
864 check_page: |
|
865 /* allocate a new page if necessary */ |
|
866 if (!buffer_info->page) { |
|
867 buffer_info->page = alloc_page(gfp); |
|
868 if (unlikely(!buffer_info->page)) { |
|
869 adapter->alloc_rx_buff_failed++; |
|
870 break; |
|
871 } |
|
872 } |
|
873 |
|
874 if (!buffer_info->dma) { |
|
875 buffer_info->dma = dma_map_page(&pdev->dev, |
|
876 buffer_info->page, 0, |
|
877 PAGE_SIZE, |
|
878 DMA_FROM_DEVICE); |
|
879 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
880 adapter->alloc_rx_buff_failed++; |
|
881 break; |
|
882 } |
|
883 } |
|
884 |
|
885 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
886 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
|
887 |
|
888 if (unlikely(++i == rx_ring->count)) |
|
889 i = 0; |
|
890 buffer_info = &rx_ring->buffer_info[i]; |
|
891 } |
|
892 |
|
893 if (likely(rx_ring->next_to_use != i)) { |
|
894 rx_ring->next_to_use = i; |
|
895 if (unlikely(i-- == 0)) |
|
896 i = (rx_ring->count - 1); |
|
897 |
|
898 /* Force memory writes to complete before letting h/w |
|
899 * know there are new descriptors to fetch. (Only |
|
900 * applicable for weak-ordered memory model archs, |
|
901 * such as IA-64). |
|
902 */ |
|
903 wmb(); |
|
904 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
905 e1000e_update_rdt_wa(rx_ring, i); |
|
906 else |
|
907 writel(i, rx_ring->tail); |
|
908 } |
|
909 } |
|
910 |
|
911 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss, |
|
912 struct sk_buff *skb) |
|
913 { |
|
914 if (netdev->features & NETIF_F_RXHASH) |
|
915 skb_set_hash(skb, le32_to_cpu(rss), PKT_HASH_TYPE_L3); |
|
916 } |
|
917 |
|
918 /** |
|
919 * e1000_clean_rx_irq - Send received data up the network stack |
|
920 * @rx_ring: Rx descriptor ring |
|
921 * |
|
922 * the return value indicates whether actual cleaning was done, there |
|
923 * is no guarantee that everything was cleaned |
|
924 **/ |
|
925 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
926 int work_to_do) |
|
927 { |
|
928 struct e1000_adapter *adapter = rx_ring->adapter; |
|
929 struct net_device *netdev = adapter->netdev; |
|
930 struct pci_dev *pdev = adapter->pdev; |
|
931 struct e1000_hw *hw = &adapter->hw; |
|
932 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
933 struct e1000_buffer *buffer_info, *next_buffer; |
|
934 u32 length, staterr; |
|
935 unsigned int i; |
|
936 int cleaned_count = 0; |
|
937 bool cleaned = false; |
|
938 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
939 |
|
940 i = rx_ring->next_to_clean; |
|
941 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
942 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
943 buffer_info = &rx_ring->buffer_info[i]; |
|
944 |
|
945 while (staterr & E1000_RXD_STAT_DD) { |
|
946 struct sk_buff *skb; |
|
947 |
|
948 if (*work_done >= work_to_do) |
|
949 break; |
|
950 (*work_done)++; |
|
951 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
952 |
|
953 skb = buffer_info->skb; |
|
954 |
|
955 if (!adapter->ecdev) |
|
956 buffer_info->skb = NULL; |
|
957 |
|
958 prefetch(skb->data - NET_IP_ALIGN); |
|
959 |
|
960 i++; |
|
961 if (i == rx_ring->count) |
|
962 i = 0; |
|
963 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
964 prefetch(next_rxd); |
|
965 |
|
966 next_buffer = &rx_ring->buffer_info[i]; |
|
967 |
|
968 cleaned = true; |
|
969 cleaned_count++; |
|
970 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
971 adapter->rx_buffer_len, DMA_FROM_DEVICE); |
|
972 buffer_info->dma = 0; |
|
973 |
|
974 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
975 |
|
976 /* !EOP means multiple descriptors were used to store a single |
|
977 * packet, if that's the case we need to toss it. In fact, we |
|
978 * need to toss every packet with the EOP bit clear and the |
|
979 * next frame that _does_ have the EOP bit set, as it is by |
|
980 * definition only a frame fragment |
|
981 */ |
|
982 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
|
983 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
984 |
|
985 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
986 /* All receives must fit into a single buffer */ |
|
987 e_dbg("Receive packet consumed multiple buffers\n"); |
|
988 /* recycle */ |
|
989 buffer_info->skb = skb; |
|
990 if (staterr & E1000_RXD_STAT_EOP) |
|
991 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
992 goto next_desc; |
|
993 } |
|
994 |
|
995 if (unlikely(!adapter->ecdev && |
|
996 (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
997 !(netdev->features & NETIF_F_RXALL))) { |
|
998 /* recycle */ |
|
999 buffer_info->skb = skb; |
|
1000 goto next_desc; |
|
1001 } |
|
1002 |
|
1003 /* adjust length to remove Ethernet CRC */ |
|
1004 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1005 /* If configured to store CRC, don't subtract FCS, |
|
1006 * but keep the FCS bytes out of the total_rx_bytes |
|
1007 * counter |
|
1008 */ |
|
1009 if (netdev->features & NETIF_F_RXFCS) |
|
1010 total_rx_bytes -= 4; |
|
1011 else |
|
1012 length -= 4; |
|
1013 } |
|
1014 |
|
1015 total_rx_bytes += length; |
|
1016 total_rx_packets++; |
|
1017 |
|
1018 /* code added for copybreak, this should improve |
|
1019 * performance for small packets with large amounts |
|
1020 * of reassembly being done in the stack |
|
1021 */ |
|
1022 if (!adapter->ecdev && length < copybreak) { |
|
1023 struct sk_buff *new_skb = |
|
1024 netdev_alloc_skb_ip_align(netdev, length); |
|
1025 if (new_skb) { |
|
1026 skb_copy_to_linear_data_offset(new_skb, |
|
1027 -NET_IP_ALIGN, |
|
1028 (skb->data - |
|
1029 NET_IP_ALIGN), |
|
1030 (length + |
|
1031 NET_IP_ALIGN)); |
|
1032 /* save the skb in buffer_info as good */ |
|
1033 buffer_info->skb = skb; |
|
1034 skb = new_skb; |
|
1035 } |
|
1036 /* else just continue with the old one */ |
|
1037 } |
|
1038 /* end copybreak code */ |
|
1039 skb_put(skb, length); |
|
1040 |
|
1041 /* Receive Checksum Offload */ |
|
1042 e1000_rx_checksum(adapter, staterr, skb); |
|
1043 |
|
1044 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1045 |
|
1046 if (adapter->ecdev) { |
|
1047 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1048 adapter->ec_watchdog_jiffies = jiffies; |
|
1049 } else { |
|
1050 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1051 rx_desc->wb.upper.vlan); |
|
1052 } |
|
1053 |
|
1054 next_desc: |
|
1055 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1056 |
|
1057 /* return some buffers to hardware, one at a time is too slow */ |
|
1058 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1059 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1060 GFP_ATOMIC); |
|
1061 cleaned_count = 0; |
|
1062 } |
|
1063 |
|
1064 /* use prefetched values */ |
|
1065 rx_desc = next_rxd; |
|
1066 buffer_info = next_buffer; |
|
1067 |
|
1068 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1069 } |
|
1070 rx_ring->next_to_clean = i; |
|
1071 |
|
1072 cleaned_count = e1000_desc_unused(rx_ring); |
|
1073 if (cleaned_count) |
|
1074 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1075 |
|
1076 adapter->total_rx_bytes += total_rx_bytes; |
|
1077 adapter->total_rx_packets += total_rx_packets; |
|
1078 return cleaned; |
|
1079 } |
|
1080 |
|
1081 static void e1000_put_txbuf(struct e1000_ring *tx_ring, |
|
1082 struct e1000_buffer *buffer_info) |
|
1083 { |
|
1084 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1085 |
|
1086 if (adapter->ecdev) { |
|
1087 return; |
|
1088 } |
|
1089 |
|
1090 if (buffer_info->dma) { |
|
1091 if (buffer_info->mapped_as_page) |
|
1092 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1093 buffer_info->length, DMA_TO_DEVICE); |
|
1094 else |
|
1095 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1096 buffer_info->length, DMA_TO_DEVICE); |
|
1097 buffer_info->dma = 0; |
|
1098 } |
|
1099 if (buffer_info->skb) { |
|
1100 dev_kfree_skb_any(buffer_info->skb); |
|
1101 buffer_info->skb = NULL; |
|
1102 } |
|
1103 buffer_info->time_stamp = 0; |
|
1104 } |
|
1105 |
|
1106 static void e1000_print_hw_hang(struct work_struct *work) |
|
1107 { |
|
1108 struct e1000_adapter *adapter = container_of(work, |
|
1109 struct e1000_adapter, |
|
1110 print_hang_task); |
|
1111 struct net_device *netdev = adapter->netdev; |
|
1112 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1113 unsigned int i = tx_ring->next_to_clean; |
|
1114 unsigned int eop = tx_ring->buffer_info[i].next_to_watch; |
|
1115 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1116 struct e1000_hw *hw = &adapter->hw; |
|
1117 u16 phy_status, phy_1000t_status, phy_ext_status; |
|
1118 u16 pci_status; |
|
1119 |
|
1120 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1121 return; |
|
1122 |
|
1123 if (!adapter->tx_hang_recheck && (adapter->flags2 & FLAG2_DMA_BURST)) { |
|
1124 /* May be block on write-back, flush and detect again |
|
1125 * flush pending descriptor writebacks to memory |
|
1126 */ |
|
1127 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1128 /* execute the writes immediately */ |
|
1129 e1e_flush(); |
|
1130 /* Due to rare timing issues, write to TIDV again to ensure |
|
1131 * the write is successful |
|
1132 */ |
|
1133 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
1134 /* execute the writes immediately */ |
|
1135 e1e_flush(); |
|
1136 adapter->tx_hang_recheck = true; |
|
1137 return; |
|
1138 } |
|
1139 adapter->tx_hang_recheck = false; |
|
1140 |
|
1141 if (er32(TDH(0)) == er32(TDT(0))) { |
|
1142 e_dbg("false hang detected, ignoring\n"); |
|
1143 return; |
|
1144 } |
|
1145 |
|
1146 /* Real hang detected */ |
|
1147 if (adapter->ecdev) { |
|
1148 ecdev_set_link(adapter->ecdev, 0); |
|
1149 } |
|
1150 else { |
|
1151 netif_stop_queue(netdev); |
|
1152 } |
|
1153 |
|
1154 e1e_rphy(hw, MII_BMSR, &phy_status); |
|
1155 e1e_rphy(hw, MII_STAT1000, &phy_1000t_status); |
|
1156 e1e_rphy(hw, MII_ESTATUS, &phy_ext_status); |
|
1157 |
|
1158 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
|
1159 |
|
1160 /* detected Hardware unit hang */ |
|
1161 e_err("Detected Hardware Unit Hang:\n" |
|
1162 " TDH <%x>\n" |
|
1163 " TDT <%x>\n" |
|
1164 " next_to_use <%x>\n" |
|
1165 " next_to_clean <%x>\n" |
|
1166 "buffer_info[next_to_clean]:\n" |
|
1167 " time_stamp <%lx>\n" |
|
1168 " next_to_watch <%x>\n" |
|
1169 " jiffies <%lx>\n" |
|
1170 " next_to_watch.status <%x>\n" |
|
1171 "MAC Status <%x>\n" |
|
1172 "PHY Status <%x>\n" |
|
1173 "PHY 1000BASE-T Status <%x>\n" |
|
1174 "PHY Extended Status <%x>\n" |
|
1175 "PCI Status <%x>\n", |
|
1176 readl(tx_ring->head), readl(tx_ring->tail), tx_ring->next_to_use, |
|
1177 tx_ring->next_to_clean, tx_ring->buffer_info[eop].time_stamp, |
|
1178 eop, jiffies, eop_desc->upper.fields.status, er32(STATUS), |
|
1179 phy_status, phy_1000t_status, phy_ext_status, pci_status); |
|
1180 |
|
1181 e1000e_dump(adapter); |
|
1182 |
|
1183 /* Suggest workaround for known h/w issue */ |
|
1184 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE)) |
|
1185 e_err("Try turning off Tx pause (flow control) via ethtool\n"); |
|
1186 } |
|
1187 |
|
1188 /** |
|
1189 * e1000e_tx_hwtstamp_work - check for Tx time stamp |
|
1190 * @work: pointer to work struct |
|
1191 * |
|
1192 * This work function polls the TSYNCTXCTL valid bit to determine when a |
|
1193 * timestamp has been taken for the current stored skb. The timestamp must |
|
1194 * be for this skb because only one such packet is allowed in the queue. |
|
1195 */ |
|
1196 static void e1000e_tx_hwtstamp_work(struct work_struct *work) |
|
1197 { |
|
1198 struct e1000_adapter *adapter = container_of(work, struct e1000_adapter, |
|
1199 tx_hwtstamp_work); |
|
1200 struct e1000_hw *hw = &adapter->hw; |
|
1201 |
|
1202 if (er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID) { |
|
1203 struct skb_shared_hwtstamps shhwtstamps; |
|
1204 u64 txstmp; |
|
1205 |
|
1206 txstmp = er32(TXSTMPL); |
|
1207 txstmp |= (u64)er32(TXSTMPH) << 32; |
|
1208 |
|
1209 e1000e_systim_to_hwtstamp(adapter, &shhwtstamps, txstmp); |
|
1210 |
|
1211 skb_tstamp_tx(adapter->tx_hwtstamp_skb, &shhwtstamps); |
|
1212 dev_kfree_skb_any(adapter->tx_hwtstamp_skb); |
|
1213 adapter->tx_hwtstamp_skb = NULL; |
|
1214 } else if (time_after(jiffies, adapter->tx_hwtstamp_start |
|
1215 + adapter->tx_timeout_factor * HZ)) { |
|
1216 dev_kfree_skb_any(adapter->tx_hwtstamp_skb); |
|
1217 adapter->tx_hwtstamp_skb = NULL; |
|
1218 adapter->tx_hwtstamp_timeouts++; |
|
1219 e_warn("clearing Tx timestamp hang\n"); |
|
1220 } else { |
|
1221 /* reschedule to check later */ |
|
1222 schedule_work(&adapter->tx_hwtstamp_work); |
|
1223 } |
|
1224 } |
|
1225 |
|
1226 /** |
|
1227 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
1228 * @tx_ring: Tx descriptor ring |
|
1229 * |
|
1230 * the return value indicates whether actual cleaning was done, there |
|
1231 * is no guarantee that everything was cleaned |
|
1232 **/ |
|
1233 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) |
|
1234 { |
|
1235 struct e1000_adapter *adapter = tx_ring->adapter; |
|
1236 struct net_device *netdev = adapter->netdev; |
|
1237 struct e1000_hw *hw = &adapter->hw; |
|
1238 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
1239 struct e1000_buffer *buffer_info; |
|
1240 unsigned int i, eop; |
|
1241 unsigned int count = 0; |
|
1242 unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
|
1243 unsigned int bytes_compl = 0, pkts_compl = 0; |
|
1244 |
|
1245 i = tx_ring->next_to_clean; |
|
1246 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1247 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1248 |
|
1249 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
1250 (count < tx_ring->count)) { |
|
1251 bool cleaned = false; |
|
1252 |
|
1253 rmb(); /* read buffer_info after eop_desc */ |
|
1254 for (; !cleaned; count++) { |
|
1255 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
1256 buffer_info = &tx_ring->buffer_info[i]; |
|
1257 cleaned = (i == eop); |
|
1258 |
|
1259 if (cleaned) { |
|
1260 total_tx_packets += buffer_info->segs; |
|
1261 total_tx_bytes += buffer_info->bytecount; |
|
1262 if (buffer_info->skb) { |
|
1263 bytes_compl += buffer_info->skb->len; |
|
1264 pkts_compl++; |
|
1265 } |
|
1266 } |
|
1267 |
|
1268 e1000_put_txbuf(tx_ring, buffer_info); |
|
1269 tx_desc->upper.data = 0; |
|
1270 |
|
1271 i++; |
|
1272 if (i == tx_ring->count) |
|
1273 i = 0; |
|
1274 } |
|
1275 |
|
1276 if (i == tx_ring->next_to_use) |
|
1277 break; |
|
1278 eop = tx_ring->buffer_info[i].next_to_watch; |
|
1279 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
1280 } |
|
1281 |
|
1282 tx_ring->next_to_clean = i; |
|
1283 |
|
1284 if (!adapter->ecdev) { |
|
1285 netdev_completed_queue(netdev, pkts_compl, bytes_compl); |
|
1286 } |
|
1287 |
|
1288 #define TX_WAKE_THRESHOLD 32 |
|
1289 if (!adapter->ecdev && count && netif_carrier_ok(netdev) && |
|
1290 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { |
|
1291 /* Make sure that anybody stopping the queue after this |
|
1292 * sees the new next_to_clean. |
|
1293 */ |
|
1294 smp_mb(); |
|
1295 |
|
1296 if (netif_queue_stopped(netdev) && |
|
1297 !(test_bit(__E1000_DOWN, &adapter->state))) { |
|
1298 netif_wake_queue(netdev); |
|
1299 ++adapter->restart_queue; |
|
1300 } |
|
1301 } |
|
1302 |
|
1303 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
1304 /* Detect a transmit hang in hardware, this serializes the |
|
1305 * check with the clearing of time_stamp and movement of i |
|
1306 */ |
|
1307 adapter->detect_tx_hung = false; |
|
1308 if (tx_ring->buffer_info[i].time_stamp && |
|
1309 time_after(jiffies, tx_ring->buffer_info[i].time_stamp |
|
1310 + (adapter->tx_timeout_factor * HZ)) && |
|
1311 !(er32(STATUS) & E1000_STATUS_TXOFF)) |
|
1312 schedule_work(&adapter->print_hang_task); |
|
1313 else |
|
1314 adapter->tx_hang_recheck = false; |
|
1315 } |
|
1316 adapter->total_tx_bytes += total_tx_bytes; |
|
1317 adapter->total_tx_packets += total_tx_packets; |
|
1318 return count < tx_ring->count; |
|
1319 } |
|
1320 |
|
1321 /** |
|
1322 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
1323 * @rx_ring: Rx descriptor ring |
|
1324 * |
|
1325 * the return value indicates whether actual cleaning was done, there |
|
1326 * is no guarantee that everything was cleaned |
|
1327 **/ |
|
1328 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, |
|
1329 int work_to_do) |
|
1330 { |
|
1331 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1332 struct e1000_hw *hw = &adapter->hw; |
|
1333 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
1334 struct net_device *netdev = adapter->netdev; |
|
1335 struct pci_dev *pdev = adapter->pdev; |
|
1336 struct e1000_buffer *buffer_info, *next_buffer; |
|
1337 struct e1000_ps_page *ps_page; |
|
1338 struct sk_buff *skb; |
|
1339 unsigned int i, j; |
|
1340 u32 length, staterr; |
|
1341 int cleaned_count = 0; |
|
1342 bool cleaned = false; |
|
1343 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1344 |
|
1345 i = rx_ring->next_to_clean; |
|
1346 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
1347 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1348 buffer_info = &rx_ring->buffer_info[i]; |
|
1349 |
|
1350 while (staterr & E1000_RXD_STAT_DD) { |
|
1351 if (*work_done >= work_to_do) |
|
1352 break; |
|
1353 (*work_done)++; |
|
1354 skb = buffer_info->skb; |
|
1355 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1356 |
|
1357 /* in the packet split case this is header only */ |
|
1358 prefetch(skb->data - NET_IP_ALIGN); |
|
1359 |
|
1360 i++; |
|
1361 if (i == rx_ring->count) |
|
1362 i = 0; |
|
1363 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
1364 prefetch(next_rxd); |
|
1365 |
|
1366 next_buffer = &rx_ring->buffer_info[i]; |
|
1367 |
|
1368 cleaned = true; |
|
1369 cleaned_count++; |
|
1370 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1371 adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
|
1372 buffer_info->dma = 0; |
|
1373 |
|
1374 /* see !EOP comment in other Rx routine */ |
|
1375 if (!(staterr & E1000_RXD_STAT_EOP)) |
|
1376 adapter->flags2 |= FLAG2_IS_DISCARDING; |
|
1377 |
|
1378 if (adapter->flags2 & FLAG2_IS_DISCARDING) { |
|
1379 e_dbg("Packet Split buffers didn't pick up the full packet\n"); |
|
1380 if (!adapter->ecdev) { |
|
1381 dev_kfree_skb_irq(skb); |
|
1382 } |
|
1383 if (staterr & E1000_RXD_STAT_EOP) |
|
1384 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1385 goto next_desc; |
|
1386 } |
|
1387 |
|
1388 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1389 !(netdev->features & NETIF_F_RXALL))) { |
|
1390 if (!adapter->ecdev) { |
|
1391 dev_kfree_skb_irq(skb); |
|
1392 } |
|
1393 goto next_desc; |
|
1394 } |
|
1395 |
|
1396 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
1397 |
|
1398 if (!length) { |
|
1399 e_dbg("Last part of the packet spanning multiple descriptors\n"); |
|
1400 if (!adapter->ecdev) { |
|
1401 dev_kfree_skb_irq(skb); |
|
1402 } |
|
1403 goto next_desc; |
|
1404 } |
|
1405 |
|
1406 /* Good Receive */ |
|
1407 skb_put(skb, length); |
|
1408 |
|
1409 { |
|
1410 /* this looks ugly, but it seems compiler issues make |
|
1411 * it more efficient than reusing j |
|
1412 */ |
|
1413 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
1414 |
|
1415 /* page alloc/put takes too long and effects small |
|
1416 * packet throughput, so unsplit small packets and |
|
1417 * save the alloc/put only valid in softirq (napi) |
|
1418 * context to call kmap_* |
|
1419 */ |
|
1420 if (l1 && (l1 <= copybreak) && |
|
1421 ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
1422 u8 *vaddr; |
|
1423 |
|
1424 ps_page = &buffer_info->ps_pages[0]; |
|
1425 |
|
1426 /* there is no documentation about how to call |
|
1427 * kmap_atomic, so we can't hold the mapping |
|
1428 * very long |
|
1429 */ |
|
1430 dma_sync_single_for_cpu(&pdev->dev, |
|
1431 ps_page->dma, |
|
1432 PAGE_SIZE, |
|
1433 DMA_FROM_DEVICE); |
|
1434 vaddr = kmap_atomic(ps_page->page); |
|
1435 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
1436 kunmap_atomic(vaddr); |
|
1437 dma_sync_single_for_device(&pdev->dev, |
|
1438 ps_page->dma, |
|
1439 PAGE_SIZE, |
|
1440 DMA_FROM_DEVICE); |
|
1441 |
|
1442 /* remove the CRC */ |
|
1443 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1444 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1445 l1 -= 4; |
|
1446 } |
|
1447 |
|
1448 skb_put(skb, l1); |
|
1449 goto copydone; |
|
1450 } /* if */ |
|
1451 } |
|
1452 |
|
1453 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1454 length = le16_to_cpu(rx_desc->wb.upper.length[j]); |
|
1455 if (!length) |
|
1456 break; |
|
1457 |
|
1458 ps_page = &buffer_info->ps_pages[j]; |
|
1459 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1460 DMA_FROM_DEVICE); |
|
1461 ps_page->dma = 0; |
|
1462 skb_fill_page_desc(skb, j, ps_page->page, 0, length); |
|
1463 ps_page->page = NULL; |
|
1464 skb->len += length; |
|
1465 skb->data_len += length; |
|
1466 skb->truesize += PAGE_SIZE; |
|
1467 } |
|
1468 |
|
1469 /* strip the ethernet crc, problem is we're using pages now so |
|
1470 * this whole operation can get a little cpu intensive |
|
1471 */ |
|
1472 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
|
1473 if (!(netdev->features & NETIF_F_RXFCS)) |
|
1474 pskb_trim(skb, skb->len - 4); |
|
1475 } |
|
1476 |
|
1477 copydone: |
|
1478 total_rx_bytes += skb->len; |
|
1479 total_rx_packets++; |
|
1480 |
|
1481 e1000_rx_checksum(adapter, staterr, skb); |
|
1482 |
|
1483 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1484 |
|
1485 if (rx_desc->wb.upper.header_status & |
|
1486 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
|
1487 adapter->rx_hdr_split++; |
|
1488 |
|
1489 if (adapter->ecdev) { |
|
1490 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1491 adapter->ec_watchdog_jiffies = jiffies; |
|
1492 } else { |
|
1493 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1494 rx_desc->wb.middle.vlan); |
|
1495 } |
|
1496 |
|
1497 next_desc: |
|
1498 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
1499 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
1500 |
|
1501 /* return some buffers to hardware, one at a time is too slow */ |
|
1502 if (cleaned_count >= E1000_RX_BUFFER_WRITE) { |
|
1503 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1504 GFP_ATOMIC); |
|
1505 cleaned_count = 0; |
|
1506 } |
|
1507 |
|
1508 /* use prefetched values */ |
|
1509 rx_desc = next_rxd; |
|
1510 buffer_info = next_buffer; |
|
1511 |
|
1512 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
1513 } |
|
1514 rx_ring->next_to_clean = i; |
|
1515 |
|
1516 cleaned_count = e1000_desc_unused(rx_ring); |
|
1517 if (cleaned_count) |
|
1518 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1519 |
|
1520 adapter->total_rx_bytes += total_rx_bytes; |
|
1521 adapter->total_rx_packets += total_rx_packets; |
|
1522 return cleaned; |
|
1523 } |
|
1524 |
|
1525 /** |
|
1526 * e1000_consume_page - helper function |
|
1527 **/ |
|
1528 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
1529 u16 length) |
|
1530 { |
|
1531 bi->page = NULL; |
|
1532 skb->len += length; |
|
1533 skb->data_len += length; |
|
1534 skb->truesize += PAGE_SIZE; |
|
1535 } |
|
1536 |
|
1537 /** |
|
1538 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
1539 * @adapter: board private structure |
|
1540 * |
|
1541 * the return value indicates whether actual cleaning was done, there |
|
1542 * is no guarantee that everything was cleaned |
|
1543 **/ |
|
1544 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
|
1545 int work_to_do) |
|
1546 { |
|
1547 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1548 struct net_device *netdev = adapter->netdev; |
|
1549 struct pci_dev *pdev = adapter->pdev; |
|
1550 union e1000_rx_desc_extended *rx_desc, *next_rxd; |
|
1551 struct e1000_buffer *buffer_info, *next_buffer; |
|
1552 u32 length, staterr; |
|
1553 unsigned int i; |
|
1554 int cleaned_count = 0; |
|
1555 bool cleaned = false; |
|
1556 unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
|
1557 struct skb_shared_info *shinfo; |
|
1558 |
|
1559 i = rx_ring->next_to_clean; |
|
1560 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1561 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1562 buffer_info = &rx_ring->buffer_info[i]; |
|
1563 |
|
1564 while (staterr & E1000_RXD_STAT_DD) { |
|
1565 struct sk_buff *skb; |
|
1566 |
|
1567 if (*work_done >= work_to_do) |
|
1568 break; |
|
1569 (*work_done)++; |
|
1570 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
1571 |
|
1572 skb = buffer_info->skb; |
|
1573 |
|
1574 if (!adapter->ecdev) |
|
1575 buffer_info->skb = NULL; |
|
1576 |
|
1577 ++i; |
|
1578 if (i == rx_ring->count) |
|
1579 i = 0; |
|
1580 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
|
1581 prefetch(next_rxd); |
|
1582 |
|
1583 next_buffer = &rx_ring->buffer_info[i]; |
|
1584 |
|
1585 cleaned = true; |
|
1586 cleaned_count++; |
|
1587 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
|
1588 DMA_FROM_DEVICE); |
|
1589 buffer_info->dma = 0; |
|
1590 |
|
1591 length = le16_to_cpu(rx_desc->wb.upper.length); |
|
1592 |
|
1593 /* errors is only valid for DD + EOP descriptors */ |
|
1594 if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
|
1595 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
|
1596 !(netdev->features & NETIF_F_RXALL)))) { |
|
1597 /* recycle both page and skb */ |
|
1598 buffer_info->skb = skb; |
|
1599 /* an error means any chain goes out the window too */ |
|
1600 if (!adapter->ecdev && rx_ring->rx_skb_top) { |
|
1601 dev_kfree_skb_irq(rx_ring->rx_skb_top); |
|
1602 } |
|
1603 rx_ring->rx_skb_top = NULL; |
|
1604 goto next_desc; |
|
1605 } |
|
1606 #define rxtop (rx_ring->rx_skb_top) |
|
1607 if (!(staterr & E1000_RXD_STAT_EOP)) { |
|
1608 /* this descriptor is only the beginning (or middle) */ |
|
1609 if (!rxtop) { |
|
1610 /* this is the beginning of a chain */ |
|
1611 rxtop = skb; |
|
1612 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
1613 0, length); |
|
1614 } else { |
|
1615 /* this is the middle of a chain */ |
|
1616 shinfo = skb_shinfo(rxtop); |
|
1617 skb_fill_page_desc(rxtop, shinfo->nr_frags, |
|
1618 buffer_info->page, 0, |
|
1619 length); |
|
1620 /* re-use the skb, only consumed the page */ |
|
1621 buffer_info->skb = skb; |
|
1622 } |
|
1623 e1000_consume_page(buffer_info, rxtop, length); |
|
1624 goto next_desc; |
|
1625 } else { |
|
1626 if (rxtop) { |
|
1627 /* end of the chain */ |
|
1628 shinfo = skb_shinfo(rxtop); |
|
1629 skb_fill_page_desc(rxtop, shinfo->nr_frags, |
|
1630 buffer_info->page, 0, |
|
1631 length); |
|
1632 /* re-use the current skb, we only consumed the |
|
1633 * page |
|
1634 */ |
|
1635 buffer_info->skb = skb; |
|
1636 skb = rxtop; |
|
1637 rxtop = NULL; |
|
1638 e1000_consume_page(buffer_info, skb, length); |
|
1639 } else { |
|
1640 /* no chain, got EOP, this buf is the packet |
|
1641 * copybreak to save the put_page/alloc_page |
|
1642 */ |
|
1643 if (length <= copybreak && |
|
1644 skb_tailroom(skb) >= length) { |
|
1645 u8 *vaddr; |
|
1646 vaddr = kmap_atomic(buffer_info->page); |
|
1647 memcpy(skb_tail_pointer(skb), vaddr, |
|
1648 length); |
|
1649 kunmap_atomic(vaddr); |
|
1650 /* re-use the page, so don't erase |
|
1651 * buffer_info->page |
|
1652 */ |
|
1653 skb_put(skb, length); |
|
1654 } else { |
|
1655 skb_fill_page_desc(skb, 0, |
|
1656 buffer_info->page, 0, |
|
1657 length); |
|
1658 e1000_consume_page(buffer_info, skb, |
|
1659 length); |
|
1660 } |
|
1661 } |
|
1662 } |
|
1663 |
|
1664 /* Receive Checksum Offload */ |
|
1665 e1000_rx_checksum(adapter, staterr, skb); |
|
1666 |
|
1667 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
|
1668 |
|
1669 /* probably a little skewed due to removing CRC */ |
|
1670 total_rx_bytes += skb->len; |
|
1671 total_rx_packets++; |
|
1672 |
|
1673 /* eth type trans needs skb->data to point to something */ |
|
1674 if (!adapter->ecdev && !pskb_may_pull(skb, ETH_HLEN)) { |
|
1675 e_err("pskb_may_pull failed.\n"); |
|
1676 dev_kfree_skb_irq(skb); |
|
1677 goto next_desc; |
|
1678 } |
|
1679 |
|
1680 if (adapter->ecdev) { |
|
1681 ecdev_receive(adapter->ecdev, skb->data, length); |
|
1682 adapter->ec_watchdog_jiffies = jiffies; |
|
1683 } else { |
|
1684 e1000_receive_skb(adapter, netdev, skb, staterr, |
|
1685 rx_desc->wb.upper.vlan); |
|
1686 } |
|
1687 |
|
1688 |
|
1689 next_desc: |
|
1690 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
|
1691 |
|
1692 /* return some buffers to hardware, one at a time is too slow */ |
|
1693 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
1694 adapter->alloc_rx_buf(rx_ring, cleaned_count, |
|
1695 GFP_ATOMIC); |
|
1696 cleaned_count = 0; |
|
1697 } |
|
1698 |
|
1699 /* use prefetched values */ |
|
1700 rx_desc = next_rxd; |
|
1701 buffer_info = next_buffer; |
|
1702 |
|
1703 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
|
1704 } |
|
1705 rx_ring->next_to_clean = i; |
|
1706 |
|
1707 cleaned_count = e1000_desc_unused(rx_ring); |
|
1708 if (cleaned_count) |
|
1709 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
|
1710 |
|
1711 adapter->total_rx_bytes += total_rx_bytes; |
|
1712 adapter->total_rx_packets += total_rx_packets; |
|
1713 return cleaned; |
|
1714 } |
|
1715 |
|
1716 /** |
|
1717 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1718 * @rx_ring: Rx descriptor ring |
|
1719 **/ |
|
1720 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring) |
|
1721 { |
|
1722 struct e1000_adapter *adapter = rx_ring->adapter; |
|
1723 struct e1000_buffer *buffer_info; |
|
1724 struct e1000_ps_page *ps_page; |
|
1725 struct pci_dev *pdev = adapter->pdev; |
|
1726 unsigned int i, j; |
|
1727 |
|
1728 /* Free all the Rx ring sk_buffs */ |
|
1729 for (i = 0; i < rx_ring->count; i++) { |
|
1730 buffer_info = &rx_ring->buffer_info[i]; |
|
1731 if (buffer_info->dma) { |
|
1732 if (adapter->clean_rx == e1000_clean_rx_irq) |
|
1733 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1734 adapter->rx_buffer_len, |
|
1735 DMA_FROM_DEVICE); |
|
1736 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
|
1737 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
1738 PAGE_SIZE, DMA_FROM_DEVICE); |
|
1739 else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
|
1740 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
1741 adapter->rx_ps_bsize0, |
|
1742 DMA_FROM_DEVICE); |
|
1743 buffer_info->dma = 0; |
|
1744 } |
|
1745 |
|
1746 if (buffer_info->page) { |
|
1747 put_page(buffer_info->page); |
|
1748 buffer_info->page = NULL; |
|
1749 } |
|
1750 |
|
1751 if (buffer_info->skb) { |
|
1752 dev_kfree_skb(buffer_info->skb); |
|
1753 buffer_info->skb = NULL; |
|
1754 } |
|
1755 |
|
1756 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
1757 ps_page = &buffer_info->ps_pages[j]; |
|
1758 if (!ps_page->page) |
|
1759 break; |
|
1760 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
|
1761 DMA_FROM_DEVICE); |
|
1762 ps_page->dma = 0; |
|
1763 put_page(ps_page->page); |
|
1764 ps_page->page = NULL; |
|
1765 } |
|
1766 } |
|
1767 |
|
1768 /* there also may be some cached data from a chained receive */ |
|
1769 if (rx_ring->rx_skb_top) { |
|
1770 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1771 rx_ring->rx_skb_top = NULL; |
|
1772 } |
|
1773 |
|
1774 /* Zero out the descriptor ring */ |
|
1775 memset(rx_ring->desc, 0, rx_ring->size); |
|
1776 |
|
1777 rx_ring->next_to_clean = 0; |
|
1778 rx_ring->next_to_use = 0; |
|
1779 adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
|
1780 |
|
1781 writel(0, rx_ring->head); |
|
1782 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
1783 e1000e_update_rdt_wa(rx_ring, 0); |
|
1784 else |
|
1785 writel(0, rx_ring->tail); |
|
1786 } |
|
1787 |
|
1788 static void e1000e_downshift_workaround(struct work_struct *work) |
|
1789 { |
|
1790 struct e1000_adapter *adapter = container_of(work, |
|
1791 struct e1000_adapter, |
|
1792 downshift_task); |
|
1793 |
|
1794 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
1795 return; |
|
1796 |
|
1797 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
|
1798 } |
|
1799 |
|
1800 /** |
|
1801 * e1000_intr_msi - Interrupt Handler |
|
1802 * @irq: interrupt number |
|
1803 * @data: pointer to a network interface device structure |
|
1804 **/ |
|
1805 static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data) |
|
1806 { |
|
1807 struct net_device *netdev = data; |
|
1808 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1809 struct e1000_hw *hw = &adapter->hw; |
|
1810 u32 icr = er32(ICR); |
|
1811 |
|
1812 if (adapter->ecdev) { |
|
1813 int ec_work_done = 0; |
|
1814 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1815 e1000_clean_tx_irq(adapter->tx_ring); |
|
1816 return IRQ_HANDLED; |
|
1817 } |
|
1818 |
|
1819 /* read ICR disables interrupts using IAM */ |
|
1820 if (icr & E1000_ICR_LSC) { |
|
1821 hw->mac.get_link_status = true; |
|
1822 /* ICH8 workaround-- Call gig speed drop workaround on cable |
|
1823 * disconnect (LSC) before accessing any PHY registers |
|
1824 */ |
|
1825 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1826 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1827 schedule_work(&adapter->downshift_task); |
|
1828 |
|
1829 /* 80003ES2LAN workaround-- For packet buffer work-around on |
|
1830 * link down event; disable receives here in the ISR and reset |
|
1831 * adapter in watchdog |
|
1832 */ |
|
1833 if (netif_carrier_ok(netdev) && |
|
1834 adapter->flags & FLAG_RX_NEEDS_RESTART) { |
|
1835 /* disable receives */ |
|
1836 u32 rctl = er32(RCTL); |
|
1837 |
|
1838 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1839 adapter->flags |= FLAG_RESTART_NOW; |
|
1840 } |
|
1841 /* guard against interrupt when we're going down */ |
|
1842 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1843 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1844 } |
|
1845 |
|
1846 /* Reset on uncorrectable ECC error */ |
|
1847 if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) { |
|
1848 u32 pbeccsts = er32(PBECCSTS); |
|
1849 |
|
1850 adapter->corr_errors += |
|
1851 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; |
|
1852 adapter->uncorr_errors += |
|
1853 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> |
|
1854 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; |
|
1855 |
|
1856 /* Do the reset outside of interrupt context */ |
|
1857 schedule_work(&adapter->reset_task); |
|
1858 |
|
1859 /* return immediately since reset is imminent */ |
|
1860 return IRQ_HANDLED; |
|
1861 } |
|
1862 |
|
1863 if (napi_schedule_prep(&adapter->napi)) { |
|
1864 adapter->total_tx_bytes = 0; |
|
1865 adapter->total_tx_packets = 0; |
|
1866 adapter->total_rx_bytes = 0; |
|
1867 adapter->total_rx_packets = 0; |
|
1868 __napi_schedule(&adapter->napi); |
|
1869 } |
|
1870 |
|
1871 return IRQ_HANDLED; |
|
1872 } |
|
1873 |
|
1874 /** |
|
1875 * e1000_intr - Interrupt Handler |
|
1876 * @irq: interrupt number |
|
1877 * @data: pointer to a network interface device structure |
|
1878 **/ |
|
1879 static irqreturn_t e1000_intr(int __always_unused irq, void *data) |
|
1880 { |
|
1881 struct net_device *netdev = data; |
|
1882 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1883 struct e1000_hw *hw = &adapter->hw; |
|
1884 u32 rctl, icr = er32(ICR); |
|
1885 |
|
1886 if (adapter->ecdev) { |
|
1887 int ec_work_done = 0; |
|
1888 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
1889 e1000_clean_tx_irq(adapter->tx_ring); |
|
1890 return IRQ_HANDLED; |
|
1891 } |
|
1892 |
|
1893 if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
|
1894 return IRQ_NONE; /* Not our interrupt */ |
|
1895 |
|
1896 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
1897 * not set, then the adapter didn't send an interrupt |
|
1898 */ |
|
1899 if (!(icr & E1000_ICR_INT_ASSERTED)) |
|
1900 return IRQ_NONE; |
|
1901 |
|
1902 /* Interrupt Auto-Mask...upon reading ICR, |
|
1903 * interrupts are masked. No need for the |
|
1904 * IMC write |
|
1905 */ |
|
1906 |
|
1907 if (icr & E1000_ICR_LSC) { |
|
1908 hw->mac.get_link_status = true; |
|
1909 /* ICH8 workaround-- Call gig speed drop workaround on cable |
|
1910 * disconnect (LSC) before accessing any PHY registers |
|
1911 */ |
|
1912 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
|
1913 (!(er32(STATUS) & E1000_STATUS_LU))) |
|
1914 schedule_work(&adapter->downshift_task); |
|
1915 |
|
1916 /* 80003ES2LAN workaround-- |
|
1917 * For packet buffer work-around on link down event; |
|
1918 * disable receives here in the ISR and |
|
1919 * reset adapter in watchdog |
|
1920 */ |
|
1921 if (netif_carrier_ok(netdev) && |
|
1922 (adapter->flags & FLAG_RX_NEEDS_RESTART)) { |
|
1923 /* disable receives */ |
|
1924 rctl = er32(RCTL); |
|
1925 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1926 adapter->flags |= FLAG_RESTART_NOW; |
|
1927 } |
|
1928 /* guard against interrupt when we're going down */ |
|
1929 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1930 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1931 } |
|
1932 |
|
1933 /* Reset on uncorrectable ECC error */ |
|
1934 if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) { |
|
1935 u32 pbeccsts = er32(PBECCSTS); |
|
1936 |
|
1937 adapter->corr_errors += |
|
1938 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; |
|
1939 adapter->uncorr_errors += |
|
1940 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> |
|
1941 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; |
|
1942 |
|
1943 /* Do the reset outside of interrupt context */ |
|
1944 schedule_work(&adapter->reset_task); |
|
1945 |
|
1946 /* return immediately since reset is imminent */ |
|
1947 return IRQ_HANDLED; |
|
1948 } |
|
1949 |
|
1950 if (napi_schedule_prep(&adapter->napi)) { |
|
1951 adapter->total_tx_bytes = 0; |
|
1952 adapter->total_tx_packets = 0; |
|
1953 adapter->total_rx_bytes = 0; |
|
1954 adapter->total_rx_packets = 0; |
|
1955 __napi_schedule(&adapter->napi); |
|
1956 } |
|
1957 |
|
1958 return IRQ_HANDLED; |
|
1959 } |
|
1960 |
|
1961 static irqreturn_t e1000_msix_other(int __always_unused irq, void *data) |
|
1962 { |
|
1963 struct net_device *netdev = data; |
|
1964 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1965 struct e1000_hw *hw = &adapter->hw; |
|
1966 u32 icr = er32(ICR); |
|
1967 |
|
1968 if (!(icr & E1000_ICR_INT_ASSERTED)) { |
|
1969 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1970 ew32(IMS, E1000_IMS_OTHER); |
|
1971 return IRQ_NONE; |
|
1972 } |
|
1973 |
|
1974 if (icr & adapter->eiac_mask) |
|
1975 ew32(ICS, (icr & adapter->eiac_mask)); |
|
1976 |
|
1977 if (icr & E1000_ICR_OTHER) { |
|
1978 if (!(icr & E1000_ICR_LSC)) |
|
1979 goto no_link_interrupt; |
|
1980 hw->mac.get_link_status = true; |
|
1981 /* guard against interrupt when we're going down */ |
|
1982 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
1983 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
1984 } |
|
1985 |
|
1986 no_link_interrupt: |
|
1987 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
1988 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); |
|
1989 |
|
1990 return IRQ_HANDLED; |
|
1991 } |
|
1992 |
|
1993 static irqreturn_t e1000_intr_msix_tx(int __always_unused irq, void *data) |
|
1994 { |
|
1995 struct net_device *netdev = data; |
|
1996 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1997 struct e1000_hw *hw = &adapter->hw; |
|
1998 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
1999 |
|
2000 adapter->total_tx_bytes = 0; |
|
2001 adapter->total_tx_packets = 0; |
|
2002 |
|
2003 if (!e1000_clean_tx_irq(tx_ring)) |
|
2004 /* Ring was not completely cleaned, so fire another interrupt */ |
|
2005 ew32(ICS, tx_ring->ims_val); |
|
2006 |
|
2007 return IRQ_HANDLED; |
|
2008 } |
|
2009 |
|
2010 static irqreturn_t e1000_intr_msix_rx(int __always_unused irq, void *data) |
|
2011 { |
|
2012 struct net_device *netdev = data; |
|
2013 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2014 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
2015 |
|
2016 /* Write the ITR value calculated at the end of the |
|
2017 * previous interrupt. |
|
2018 */ |
|
2019 if (rx_ring->set_itr) { |
|
2020 writel(1000000000 / (rx_ring->itr_val * 256), |
|
2021 rx_ring->itr_register); |
|
2022 rx_ring->set_itr = 0; |
|
2023 } |
|
2024 |
|
2025 if (adapter->ecdev) { |
|
2026 int ec_work_done = 0; |
|
2027 adapter->clean_rx(adapter->rx_ring, &ec_work_done, 100); |
|
2028 } else { |
|
2029 if (napi_schedule_prep(&adapter->napi)) { |
|
2030 adapter->total_rx_bytes = 0; |
|
2031 adapter->total_rx_packets = 0; |
|
2032 __napi_schedule(&adapter->napi); |
|
2033 } |
|
2034 } |
|
2035 return IRQ_HANDLED; |
|
2036 } |
|
2037 |
|
2038 /** |
|
2039 * e1000_configure_msix - Configure MSI-X hardware |
|
2040 * |
|
2041 * e1000_configure_msix sets up the hardware to properly |
|
2042 * generate MSI-X interrupts. |
|
2043 **/ |
|
2044 static void e1000_configure_msix(struct e1000_adapter *adapter) |
|
2045 { |
|
2046 struct e1000_hw *hw = &adapter->hw; |
|
2047 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
2048 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
2049 int vector = 0; |
|
2050 u32 ctrl_ext, ivar = 0; |
|
2051 |
|
2052 adapter->eiac_mask = 0; |
|
2053 |
|
2054 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ |
|
2055 if (hw->mac.type == e1000_82574) { |
|
2056 u32 rfctl = er32(RFCTL); |
|
2057 |
|
2058 rfctl |= E1000_RFCTL_ACK_DIS; |
|
2059 ew32(RFCTL, rfctl); |
|
2060 } |
|
2061 |
|
2062 /* Configure Rx vector */ |
|
2063 rx_ring->ims_val = E1000_IMS_RXQ0; |
|
2064 adapter->eiac_mask |= rx_ring->ims_val; |
|
2065 if (rx_ring->itr_val) |
|
2066 writel(1000000000 / (rx_ring->itr_val * 256), |
|
2067 rx_ring->itr_register); |
|
2068 else |
|
2069 writel(1, rx_ring->itr_register); |
|
2070 ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
|
2071 |
|
2072 /* Configure Tx vector */ |
|
2073 tx_ring->ims_val = E1000_IMS_TXQ0; |
|
2074 vector++; |
|
2075 if (tx_ring->itr_val) |
|
2076 writel(1000000000 / (tx_ring->itr_val * 256), |
|
2077 tx_ring->itr_register); |
|
2078 else |
|
2079 writel(1, tx_ring->itr_register); |
|
2080 adapter->eiac_mask |= tx_ring->ims_val; |
|
2081 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); |
|
2082 |
|
2083 /* set vector for Other Causes, e.g. link changes */ |
|
2084 vector++; |
|
2085 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); |
|
2086 if (rx_ring->itr_val) |
|
2087 writel(1000000000 / (rx_ring->itr_val * 256), |
|
2088 hw->hw_addr + E1000_EITR_82574(vector)); |
|
2089 else |
|
2090 writel(1, hw->hw_addr + E1000_EITR_82574(vector)); |
|
2091 |
|
2092 /* Cause Tx interrupts on every write back */ |
|
2093 ivar |= (1 << 31); |
|
2094 |
|
2095 ew32(IVAR, ivar); |
|
2096 |
|
2097 /* enable MSI-X PBA support */ |
|
2098 ctrl_ext = er32(CTRL_EXT); |
|
2099 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; |
|
2100 |
|
2101 /* Auto-Mask Other interrupts upon ICR read */ |
|
2102 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
|
2103 ctrl_ext |= E1000_CTRL_EXT_EIAME; |
|
2104 ew32(CTRL_EXT, ctrl_ext); |
|
2105 e1e_flush(); |
|
2106 } |
|
2107 |
|
2108 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) |
|
2109 { |
|
2110 if (adapter->msix_entries) { |
|
2111 pci_disable_msix(adapter->pdev); |
|
2112 kfree(adapter->msix_entries); |
|
2113 adapter->msix_entries = NULL; |
|
2114 } else if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2115 pci_disable_msi(adapter->pdev); |
|
2116 adapter->flags &= ~FLAG_MSI_ENABLED; |
|
2117 } |
|
2118 } |
|
2119 |
|
2120 /** |
|
2121 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported |
|
2122 * |
|
2123 * Attempt to configure interrupts using the best available |
|
2124 * capabilities of the hardware and kernel. |
|
2125 **/ |
|
2126 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) |
|
2127 { |
|
2128 int err; |
|
2129 int i; |
|
2130 |
|
2131 switch (adapter->int_mode) { |
|
2132 case E1000E_INT_MODE_MSIX: |
|
2133 if (adapter->flags & FLAG_HAS_MSIX) { |
|
2134 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
|
2135 adapter->msix_entries = kcalloc(adapter->num_vectors, |
|
2136 sizeof(struct |
|
2137 msix_entry), |
|
2138 GFP_KERNEL); |
|
2139 if (adapter->msix_entries) { |
|
2140 struct e1000_adapter *a = adapter; |
|
2141 |
|
2142 for (i = 0; i < adapter->num_vectors; i++) |
|
2143 adapter->msix_entries[i].entry = i; |
|
2144 |
|
2145 err = pci_enable_msix_range(a->pdev, |
|
2146 a->msix_entries, |
|
2147 a->num_vectors, |
|
2148 a->num_vectors); |
|
2149 if (err > 0) |
|
2150 return; |
|
2151 } |
|
2152 /* MSI-X failed, so fall through and try MSI */ |
|
2153 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n"); |
|
2154 e1000e_reset_interrupt_capability(adapter); |
|
2155 } |
|
2156 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2157 /* Fall through */ |
|
2158 case E1000E_INT_MODE_MSI: |
|
2159 if (!pci_enable_msi(adapter->pdev)) { |
|
2160 adapter->flags |= FLAG_MSI_ENABLED; |
|
2161 } else { |
|
2162 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2163 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n"); |
|
2164 } |
|
2165 /* Fall through */ |
|
2166 case E1000E_INT_MODE_LEGACY: |
|
2167 /* Don't do anything; this is the system default */ |
|
2168 break; |
|
2169 } |
|
2170 |
|
2171 /* store the number of vectors being used */ |
|
2172 adapter->num_vectors = 1; |
|
2173 } |
|
2174 |
|
2175 /** |
|
2176 * e1000_request_msix - Initialize MSI-X interrupts |
|
2177 * |
|
2178 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the |
|
2179 * kernel. |
|
2180 **/ |
|
2181 static int e1000_request_msix(struct e1000_adapter *adapter) |
|
2182 { |
|
2183 struct net_device *netdev = adapter->netdev; |
|
2184 int err = 0, vector = 0; |
|
2185 |
|
2186 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2187 snprintf(adapter->rx_ring->name, |
|
2188 sizeof(adapter->rx_ring->name) - 1, |
|
2189 "%s-rx-0", netdev->name); |
|
2190 else |
|
2191 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); |
|
2192 err = request_irq(adapter->msix_entries[vector].vector, |
|
2193 e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
|
2194 netdev); |
|
2195 if (err) |
|
2196 return err; |
|
2197 adapter->rx_ring->itr_register = adapter->hw.hw_addr + |
|
2198 E1000_EITR_82574(vector); |
|
2199 adapter->rx_ring->itr_val = adapter->itr; |
|
2200 vector++; |
|
2201 |
|
2202 if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
|
2203 snprintf(adapter->tx_ring->name, |
|
2204 sizeof(adapter->tx_ring->name) - 1, |
|
2205 "%s-tx-0", netdev->name); |
|
2206 else |
|
2207 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); |
|
2208 err = request_irq(adapter->msix_entries[vector].vector, |
|
2209 e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
|
2210 netdev); |
|
2211 if (err) |
|
2212 return err; |
|
2213 adapter->tx_ring->itr_register = adapter->hw.hw_addr + |
|
2214 E1000_EITR_82574(vector); |
|
2215 adapter->tx_ring->itr_val = adapter->itr; |
|
2216 vector++; |
|
2217 |
|
2218 err = request_irq(adapter->msix_entries[vector].vector, |
|
2219 e1000_msix_other, 0, netdev->name, netdev); |
|
2220 if (err) |
|
2221 return err; |
|
2222 |
|
2223 e1000_configure_msix(adapter); |
|
2224 |
|
2225 return 0; |
|
2226 } |
|
2227 |
|
2228 /** |
|
2229 * e1000_request_irq - initialize interrupts |
|
2230 * |
|
2231 * Attempts to configure interrupts using the best available |
|
2232 * capabilities of the hardware and kernel. |
|
2233 **/ |
|
2234 static int e1000_request_irq(struct e1000_adapter *adapter) |
|
2235 { |
|
2236 struct net_device *netdev = adapter->netdev; |
|
2237 int err; |
|
2238 |
|
2239 if (adapter->ecdev) |
|
2240 return 0; |
|
2241 |
|
2242 if (adapter->msix_entries) { |
|
2243 err = e1000_request_msix(adapter); |
|
2244 if (!err) |
|
2245 return err; |
|
2246 /* fall back to MSI */ |
|
2247 e1000e_reset_interrupt_capability(adapter); |
|
2248 adapter->int_mode = E1000E_INT_MODE_MSI; |
|
2249 e1000e_set_interrupt_capability(adapter); |
|
2250 } |
|
2251 if (adapter->flags & FLAG_MSI_ENABLED) { |
|
2252 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
|
2253 netdev->name, netdev); |
|
2254 if (!err) |
|
2255 return err; |
|
2256 |
|
2257 /* fall back to legacy interrupt */ |
|
2258 e1000e_reset_interrupt_capability(adapter); |
|
2259 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
2260 } |
|
2261 |
|
2262 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
|
2263 netdev->name, netdev); |
|
2264 if (err) |
|
2265 e_err("Unable to allocate interrupt, Error: %d\n", err); |
|
2266 |
|
2267 return err; |
|
2268 } |
|
2269 |
|
2270 static void e1000_free_irq(struct e1000_adapter *adapter) |
|
2271 { |
|
2272 struct net_device *netdev = adapter->netdev; |
|
2273 |
|
2274 if (adapter->ecdev) { |
|
2275 return; |
|
2276 } |
|
2277 |
|
2278 if (adapter->msix_entries) { |
|
2279 int vector = 0; |
|
2280 |
|
2281 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2282 vector++; |
|
2283 |
|
2284 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2285 vector++; |
|
2286 |
|
2287 /* Other Causes interrupt vector */ |
|
2288 free_irq(adapter->msix_entries[vector].vector, netdev); |
|
2289 return; |
|
2290 } |
|
2291 |
|
2292 free_irq(adapter->pdev->irq, netdev); |
|
2293 } |
|
2294 |
|
2295 /** |
|
2296 * e1000_irq_disable - Mask off interrupt generation on the NIC |
|
2297 **/ |
|
2298 static void e1000_irq_disable(struct e1000_adapter *adapter) |
|
2299 { |
|
2300 struct e1000_hw *hw = &adapter->hw; |
|
2301 |
|
2302 ew32(IMC, ~0); |
|
2303 if (adapter->msix_entries) |
|
2304 ew32(EIAC_82574, 0); |
|
2305 e1e_flush(); |
|
2306 |
|
2307 if (adapter->ecdev) { |
|
2308 return; |
|
2309 } |
|
2310 |
|
2311 if (adapter->msix_entries) { |
|
2312 int i; |
|
2313 |
|
2314 for (i = 0; i < adapter->num_vectors; i++) |
|
2315 synchronize_irq(adapter->msix_entries[i].vector); |
|
2316 } else { |
|
2317 synchronize_irq(adapter->pdev->irq); |
|
2318 } |
|
2319 } |
|
2320 |
|
2321 /** |
|
2322 * e1000_irq_enable - Enable default interrupt generation settings |
|
2323 **/ |
|
2324 static void e1000_irq_enable(struct e1000_adapter *adapter) |
|
2325 { |
|
2326 struct e1000_hw *hw = &adapter->hw; |
|
2327 |
|
2328 if (adapter->ecdev) |
|
2329 return; |
|
2330 |
|
2331 if (adapter->msix_entries) { |
|
2332 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); |
|
2333 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); |
|
2334 } else if (hw->mac.type == e1000_pch_lpt) { |
|
2335 ew32(IMS, IMS_ENABLE_MASK | E1000_IMS_ECCER); |
|
2336 } else { |
|
2337 ew32(IMS, IMS_ENABLE_MASK); |
|
2338 } |
|
2339 e1e_flush(); |
|
2340 } |
|
2341 |
|
2342 /** |
|
2343 * e1000e_get_hw_control - get control of the h/w from f/w |
|
2344 * @adapter: address of board private structure |
|
2345 * |
|
2346 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2347 * For ASF and Pass Through versions of f/w this means that |
|
2348 * the driver is loaded. For AMT version (only with 82573) |
|
2349 * of the f/w this means that the network i/f is open. |
|
2350 **/ |
|
2351 void e1000e_get_hw_control(struct e1000_adapter *adapter) |
|
2352 { |
|
2353 struct e1000_hw *hw = &adapter->hw; |
|
2354 u32 ctrl_ext; |
|
2355 u32 swsm; |
|
2356 |
|
2357 /* Let firmware know the driver has taken over */ |
|
2358 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2359 swsm = er32(SWSM); |
|
2360 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
|
2361 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2362 ctrl_ext = er32(CTRL_EXT); |
|
2363 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
2364 } |
|
2365 } |
|
2366 |
|
2367 /** |
|
2368 * e1000e_release_hw_control - release control of the h/w to f/w |
|
2369 * @adapter: address of board private structure |
|
2370 * |
|
2371 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
|
2372 * For ASF and Pass Through versions of f/w this means that the |
|
2373 * driver is no longer loaded. For AMT version (only with 82573) i |
|
2374 * of the f/w this means that the network i/f is closed. |
|
2375 * |
|
2376 **/ |
|
2377 void e1000e_release_hw_control(struct e1000_adapter *adapter) |
|
2378 { |
|
2379 struct e1000_hw *hw = &adapter->hw; |
|
2380 u32 ctrl_ext; |
|
2381 u32 swsm; |
|
2382 |
|
2383 /* Let firmware taken over control of h/w */ |
|
2384 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { |
|
2385 swsm = er32(SWSM); |
|
2386 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
|
2387 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { |
|
2388 ctrl_ext = er32(CTRL_EXT); |
|
2389 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
|
2390 } |
|
2391 } |
|
2392 |
|
2393 /** |
|
2394 * e1000_alloc_ring_dma - allocate memory for a ring structure |
|
2395 **/ |
|
2396 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, |
|
2397 struct e1000_ring *ring) |
|
2398 { |
|
2399 struct pci_dev *pdev = adapter->pdev; |
|
2400 |
|
2401 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, |
|
2402 GFP_KERNEL); |
|
2403 if (!ring->desc) |
|
2404 return -ENOMEM; |
|
2405 |
|
2406 return 0; |
|
2407 } |
|
2408 |
|
2409 /** |
|
2410 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) |
|
2411 * @tx_ring: Tx descriptor ring |
|
2412 * |
|
2413 * Return 0 on success, negative on failure |
|
2414 **/ |
|
2415 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring) |
|
2416 { |
|
2417 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2418 int err = -ENOMEM, size; |
|
2419 |
|
2420 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2421 tx_ring->buffer_info = vzalloc(size); |
|
2422 if (!tx_ring->buffer_info) |
|
2423 goto err; |
|
2424 |
|
2425 /* round up to nearest 4K */ |
|
2426 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
2427 tx_ring->size = ALIGN(tx_ring->size, 4096); |
|
2428 |
|
2429 err = e1000_alloc_ring_dma(adapter, tx_ring); |
|
2430 if (err) |
|
2431 goto err; |
|
2432 |
|
2433 tx_ring->next_to_use = 0; |
|
2434 tx_ring->next_to_clean = 0; |
|
2435 |
|
2436 return 0; |
|
2437 err: |
|
2438 vfree(tx_ring->buffer_info); |
|
2439 e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
|
2440 return err; |
|
2441 } |
|
2442 |
|
2443 /** |
|
2444 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) |
|
2445 * @rx_ring: Rx descriptor ring |
|
2446 * |
|
2447 * Returns 0 on success, negative on failure |
|
2448 **/ |
|
2449 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring) |
|
2450 { |
|
2451 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2452 struct e1000_buffer *buffer_info; |
|
2453 int i, size, desc_len, err = -ENOMEM; |
|
2454 |
|
2455 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2456 rx_ring->buffer_info = vzalloc(size); |
|
2457 if (!rx_ring->buffer_info) |
|
2458 goto err; |
|
2459 |
|
2460 for (i = 0; i < rx_ring->count; i++) { |
|
2461 buffer_info = &rx_ring->buffer_info[i]; |
|
2462 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, |
|
2463 sizeof(struct e1000_ps_page), |
|
2464 GFP_KERNEL); |
|
2465 if (!buffer_info->ps_pages) |
|
2466 goto err_pages; |
|
2467 } |
|
2468 |
|
2469 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
2470 |
|
2471 /* Round up to nearest 4K */ |
|
2472 rx_ring->size = rx_ring->count * desc_len; |
|
2473 rx_ring->size = ALIGN(rx_ring->size, 4096); |
|
2474 |
|
2475 err = e1000_alloc_ring_dma(adapter, rx_ring); |
|
2476 if (err) |
|
2477 goto err_pages; |
|
2478 |
|
2479 rx_ring->next_to_clean = 0; |
|
2480 rx_ring->next_to_use = 0; |
|
2481 rx_ring->rx_skb_top = NULL; |
|
2482 |
|
2483 return 0; |
|
2484 |
|
2485 err_pages: |
|
2486 for (i = 0; i < rx_ring->count; i++) { |
|
2487 buffer_info = &rx_ring->buffer_info[i]; |
|
2488 kfree(buffer_info->ps_pages); |
|
2489 } |
|
2490 err: |
|
2491 vfree(rx_ring->buffer_info); |
|
2492 e_err("Unable to allocate memory for the receive descriptor ring\n"); |
|
2493 return err; |
|
2494 } |
|
2495 |
|
2496 /** |
|
2497 * e1000_clean_tx_ring - Free Tx Buffers |
|
2498 * @tx_ring: Tx descriptor ring |
|
2499 **/ |
|
2500 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring) |
|
2501 { |
|
2502 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2503 struct e1000_buffer *buffer_info; |
|
2504 unsigned long size; |
|
2505 unsigned int i; |
|
2506 |
|
2507 for (i = 0; i < tx_ring->count; i++) { |
|
2508 buffer_info = &tx_ring->buffer_info[i]; |
|
2509 e1000_put_txbuf(tx_ring, buffer_info); |
|
2510 } |
|
2511 |
|
2512 netdev_reset_queue(adapter->netdev); |
|
2513 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2514 memset(tx_ring->buffer_info, 0, size); |
|
2515 |
|
2516 memset(tx_ring->desc, 0, tx_ring->size); |
|
2517 |
|
2518 tx_ring->next_to_use = 0; |
|
2519 tx_ring->next_to_clean = 0; |
|
2520 |
|
2521 writel(0, tx_ring->head); |
|
2522 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
2523 e1000e_update_tdt_wa(tx_ring, 0); |
|
2524 else |
|
2525 writel(0, tx_ring->tail); |
|
2526 } |
|
2527 |
|
2528 /** |
|
2529 * e1000e_free_tx_resources - Free Tx Resources per Queue |
|
2530 * @tx_ring: Tx descriptor ring |
|
2531 * |
|
2532 * Free all transmit software resources |
|
2533 **/ |
|
2534 void e1000e_free_tx_resources(struct e1000_ring *tx_ring) |
|
2535 { |
|
2536 struct e1000_adapter *adapter = tx_ring->adapter; |
|
2537 struct pci_dev *pdev = adapter->pdev; |
|
2538 |
|
2539 e1000_clean_tx_ring(tx_ring); |
|
2540 |
|
2541 vfree(tx_ring->buffer_info); |
|
2542 tx_ring->buffer_info = NULL; |
|
2543 |
|
2544 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
2545 tx_ring->dma); |
|
2546 tx_ring->desc = NULL; |
|
2547 } |
|
2548 |
|
2549 /** |
|
2550 * e1000e_free_rx_resources - Free Rx Resources |
|
2551 * @rx_ring: Rx descriptor ring |
|
2552 * |
|
2553 * Free all receive software resources |
|
2554 **/ |
|
2555 void e1000e_free_rx_resources(struct e1000_ring *rx_ring) |
|
2556 { |
|
2557 struct e1000_adapter *adapter = rx_ring->adapter; |
|
2558 struct pci_dev *pdev = adapter->pdev; |
|
2559 int i; |
|
2560 |
|
2561 e1000_clean_rx_ring(rx_ring); |
|
2562 |
|
2563 for (i = 0; i < rx_ring->count; i++) |
|
2564 kfree(rx_ring->buffer_info[i].ps_pages); |
|
2565 |
|
2566 vfree(rx_ring->buffer_info); |
|
2567 rx_ring->buffer_info = NULL; |
|
2568 |
|
2569 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2570 rx_ring->dma); |
|
2571 rx_ring->desc = NULL; |
|
2572 } |
|
2573 |
|
2574 /** |
|
2575 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2576 * @adapter: pointer to adapter |
|
2577 * @itr_setting: current adapter->itr |
|
2578 * @packets: the number of packets during this measurement interval |
|
2579 * @bytes: the number of bytes during this measurement interval |
|
2580 * |
|
2581 * Stores a new ITR value based on packets and byte |
|
2582 * counts during the last interrupt. The advantage of per interrupt |
|
2583 * computation is faster updates and more accurate ITR for the current |
|
2584 * traffic pattern. Constants in this function were computed |
|
2585 * based on theoretical maximum wire speed and thresholds were set based |
|
2586 * on testing data as well as attempting to minimize response time |
|
2587 * while increasing bulk throughput. This functionality is controlled |
|
2588 * by the InterruptThrottleRate module parameter. |
|
2589 **/ |
|
2590 static unsigned int e1000_update_itr(u16 itr_setting, int packets, int bytes) |
|
2591 { |
|
2592 unsigned int retval = itr_setting; |
|
2593 |
|
2594 if (packets == 0) |
|
2595 return itr_setting; |
|
2596 |
|
2597 switch (itr_setting) { |
|
2598 case lowest_latency: |
|
2599 /* handle TSO and jumbo frames */ |
|
2600 if (bytes / packets > 8000) |
|
2601 retval = bulk_latency; |
|
2602 else if ((packets < 5) && (bytes > 512)) |
|
2603 retval = low_latency; |
|
2604 break; |
|
2605 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2606 if (bytes > 10000) { |
|
2607 /* this if handles the TSO accounting */ |
|
2608 if (bytes / packets > 8000) |
|
2609 retval = bulk_latency; |
|
2610 else if ((packets < 10) || ((bytes / packets) > 1200)) |
|
2611 retval = bulk_latency; |
|
2612 else if ((packets > 35)) |
|
2613 retval = lowest_latency; |
|
2614 } else if (bytes / packets > 2000) { |
|
2615 retval = bulk_latency; |
|
2616 } else if (packets <= 2 && bytes < 512) { |
|
2617 retval = lowest_latency; |
|
2618 } |
|
2619 break; |
|
2620 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2621 if (bytes > 25000) { |
|
2622 if (packets > 35) |
|
2623 retval = low_latency; |
|
2624 } else if (bytes < 6000) { |
|
2625 retval = low_latency; |
|
2626 } |
|
2627 break; |
|
2628 } |
|
2629 |
|
2630 return retval; |
|
2631 } |
|
2632 |
|
2633 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2634 { |
|
2635 u16 current_itr; |
|
2636 u32 new_itr = adapter->itr; |
|
2637 |
|
2638 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2639 if (adapter->link_speed != SPEED_1000) { |
|
2640 current_itr = 0; |
|
2641 new_itr = 4000; |
|
2642 goto set_itr_now; |
|
2643 } |
|
2644 |
|
2645 if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
2646 new_itr = 0; |
|
2647 goto set_itr_now; |
|
2648 } |
|
2649 |
|
2650 adapter->tx_itr = e1000_update_itr(adapter->tx_itr, |
|
2651 adapter->total_tx_packets, |
|
2652 adapter->total_tx_bytes); |
|
2653 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2654 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2655 adapter->tx_itr = low_latency; |
|
2656 |
|
2657 adapter->rx_itr = e1000_update_itr(adapter->rx_itr, |
|
2658 adapter->total_rx_packets, |
|
2659 adapter->total_rx_bytes); |
|
2660 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2661 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2662 adapter->rx_itr = low_latency; |
|
2663 |
|
2664 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2665 |
|
2666 /* counts and packets in update_itr are dependent on these numbers */ |
|
2667 switch (current_itr) { |
|
2668 case lowest_latency: |
|
2669 new_itr = 70000; |
|
2670 break; |
|
2671 case low_latency: |
|
2672 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2673 break; |
|
2674 case bulk_latency: |
|
2675 new_itr = 4000; |
|
2676 break; |
|
2677 default: |
|
2678 break; |
|
2679 } |
|
2680 |
|
2681 set_itr_now: |
|
2682 if (new_itr != adapter->itr) { |
|
2683 /* this attempts to bias the interrupt rate towards Bulk |
|
2684 * by adding intermediate steps when interrupt rate is |
|
2685 * increasing |
|
2686 */ |
|
2687 new_itr = new_itr > adapter->itr ? |
|
2688 min(adapter->itr + (new_itr >> 2), new_itr) : new_itr; |
|
2689 adapter->itr = new_itr; |
|
2690 adapter->rx_ring->itr_val = new_itr; |
|
2691 if (adapter->msix_entries) |
|
2692 adapter->rx_ring->set_itr = 1; |
|
2693 else |
|
2694 e1000e_write_itr(adapter, new_itr); |
|
2695 } |
|
2696 } |
|
2697 |
|
2698 /** |
|
2699 * e1000e_write_itr - write the ITR value to the appropriate registers |
|
2700 * @adapter: address of board private structure |
|
2701 * @itr: new ITR value to program |
|
2702 * |
|
2703 * e1000e_write_itr determines if the adapter is in MSI-X mode |
|
2704 * and, if so, writes the EITR registers with the ITR value. |
|
2705 * Otherwise, it writes the ITR value into the ITR register. |
|
2706 **/ |
|
2707 void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr) |
|
2708 { |
|
2709 struct e1000_hw *hw = &adapter->hw; |
|
2710 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0; |
|
2711 |
|
2712 if (adapter->msix_entries) { |
|
2713 int vector; |
|
2714 |
|
2715 for (vector = 0; vector < adapter->num_vectors; vector++) |
|
2716 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector)); |
|
2717 } else { |
|
2718 ew32(ITR, new_itr); |
|
2719 } |
|
2720 } |
|
2721 |
|
2722 /** |
|
2723 * e1000_alloc_queues - Allocate memory for all rings |
|
2724 * @adapter: board private structure to initialize |
|
2725 **/ |
|
2726 static int e1000_alloc_queues(struct e1000_adapter *adapter) |
|
2727 { |
|
2728 int size = sizeof(struct e1000_ring); |
|
2729 |
|
2730 adapter->tx_ring = kzalloc(size, GFP_KERNEL); |
|
2731 if (!adapter->tx_ring) |
|
2732 goto err; |
|
2733 adapter->tx_ring->count = adapter->tx_ring_count; |
|
2734 adapter->tx_ring->adapter = adapter; |
|
2735 |
|
2736 adapter->rx_ring = kzalloc(size, GFP_KERNEL); |
|
2737 if (!adapter->rx_ring) |
|
2738 goto err; |
|
2739 adapter->rx_ring->count = adapter->rx_ring_count; |
|
2740 adapter->rx_ring->adapter = adapter; |
|
2741 |
|
2742 return 0; |
|
2743 err: |
|
2744 e_err("Unable to allocate memory for queues\n"); |
|
2745 kfree(adapter->rx_ring); |
|
2746 kfree(adapter->tx_ring); |
|
2747 return -ENOMEM; |
|
2748 } |
|
2749 |
|
2750 /** |
|
2751 * e1000e_poll - NAPI Rx polling callback |
|
2752 * @napi: struct associated with this polling callback |
|
2753 * @weight: number of packets driver is allowed to process this poll |
|
2754 **/ |
|
2755 static int e1000e_poll(struct napi_struct *napi, int weight) |
|
2756 { |
|
2757 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, |
|
2758 napi); |
|
2759 struct e1000_hw *hw = &adapter->hw; |
|
2760 struct net_device *poll_dev = adapter->netdev; |
|
2761 int tx_cleaned = 1, work_done = 0; |
|
2762 |
|
2763 adapter = netdev_priv(poll_dev); |
|
2764 |
|
2765 if (!adapter->msix_entries || |
|
2766 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) |
|
2767 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring); |
|
2768 |
|
2769 adapter->clean_rx(adapter->rx_ring, &work_done, weight); |
|
2770 |
|
2771 if (!tx_cleaned) |
|
2772 work_done = weight; |
|
2773 |
|
2774 /* If weight not fully consumed, exit the polling mode */ |
|
2775 if (work_done < weight) { |
|
2776 if (adapter->itr_setting & 3) |
|
2777 e1000_set_itr(adapter); |
|
2778 napi_complete(napi); |
|
2779 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
2780 if (adapter->msix_entries) |
|
2781 ew32(IMS, adapter->rx_ring->ims_val); |
|
2782 else |
|
2783 e1000_irq_enable(adapter); |
|
2784 } |
|
2785 } |
|
2786 |
|
2787 return work_done; |
|
2788 } |
|
2789 |
|
2790 static int e1000_vlan_rx_add_vid(struct net_device *netdev, |
|
2791 __always_unused __be16 proto, u16 vid) |
|
2792 { |
|
2793 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2794 struct e1000_hw *hw = &adapter->hw; |
|
2795 u32 vfta, index; |
|
2796 |
|
2797 /* don't update vlan cookie if already programmed */ |
|
2798 if ((adapter->hw.mng_cookie.status & |
|
2799 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2800 (vid == adapter->mng_vlan_id)) |
|
2801 return 0; |
|
2802 |
|
2803 /* add VID to filter table */ |
|
2804 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2805 index = (vid >> 5) & 0x7F; |
|
2806 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2807 vfta |= (1 << (vid & 0x1F)); |
|
2808 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2809 } |
|
2810 |
|
2811 set_bit(vid, adapter->active_vlans); |
|
2812 |
|
2813 return 0; |
|
2814 } |
|
2815 |
|
2816 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, |
|
2817 __always_unused __be16 proto, u16 vid) |
|
2818 { |
|
2819 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2820 struct e1000_hw *hw = &adapter->hw; |
|
2821 u32 vfta, index; |
|
2822 |
|
2823 if ((adapter->hw.mng_cookie.status & |
|
2824 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
|
2825 (vid == adapter->mng_vlan_id)) { |
|
2826 /* release control to f/w */ |
|
2827 e1000e_release_hw_control(adapter); |
|
2828 return 0; |
|
2829 } |
|
2830 |
|
2831 /* remove VID from filter table */ |
|
2832 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2833 index = (vid >> 5) & 0x7F; |
|
2834 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); |
|
2835 vfta &= ~(1 << (vid & 0x1F)); |
|
2836 hw->mac.ops.write_vfta(hw, index, vfta); |
|
2837 } |
|
2838 |
|
2839 clear_bit(vid, adapter->active_vlans); |
|
2840 |
|
2841 return 0; |
|
2842 } |
|
2843 |
|
2844 /** |
|
2845 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering |
|
2846 * @adapter: board private structure to initialize |
|
2847 **/ |
|
2848 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) |
|
2849 { |
|
2850 struct net_device *netdev = adapter->netdev; |
|
2851 struct e1000_hw *hw = &adapter->hw; |
|
2852 u32 rctl; |
|
2853 |
|
2854 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2855 /* disable VLAN receive filtering */ |
|
2856 rctl = er32(RCTL); |
|
2857 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); |
|
2858 ew32(RCTL, rctl); |
|
2859 |
|
2860 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
2861 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
|
2862 adapter->mng_vlan_id); |
|
2863 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
2864 } |
|
2865 } |
|
2866 } |
|
2867 |
|
2868 /** |
|
2869 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering |
|
2870 * @adapter: board private structure to initialize |
|
2871 **/ |
|
2872 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) |
|
2873 { |
|
2874 struct e1000_hw *hw = &adapter->hw; |
|
2875 u32 rctl; |
|
2876 |
|
2877 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
|
2878 /* enable VLAN receive filtering */ |
|
2879 rctl = er32(RCTL); |
|
2880 rctl |= E1000_RCTL_VFE; |
|
2881 rctl &= ~E1000_RCTL_CFIEN; |
|
2882 ew32(RCTL, rctl); |
|
2883 } |
|
2884 } |
|
2885 |
|
2886 /** |
|
2887 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping |
|
2888 * @adapter: board private structure to initialize |
|
2889 **/ |
|
2890 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) |
|
2891 { |
|
2892 struct e1000_hw *hw = &adapter->hw; |
|
2893 u32 ctrl; |
|
2894 |
|
2895 /* disable VLAN tag insert/strip */ |
|
2896 ctrl = er32(CTRL); |
|
2897 ctrl &= ~E1000_CTRL_VME; |
|
2898 ew32(CTRL, ctrl); |
|
2899 } |
|
2900 |
|
2901 /** |
|
2902 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping |
|
2903 * @adapter: board private structure to initialize |
|
2904 **/ |
|
2905 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) |
|
2906 { |
|
2907 struct e1000_hw *hw = &adapter->hw; |
|
2908 u32 ctrl; |
|
2909 |
|
2910 /* enable VLAN tag insert/strip */ |
|
2911 ctrl = er32(CTRL); |
|
2912 ctrl |= E1000_CTRL_VME; |
|
2913 ew32(CTRL, ctrl); |
|
2914 } |
|
2915 |
|
2916 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
|
2917 { |
|
2918 struct net_device *netdev = adapter->netdev; |
|
2919 u16 vid = adapter->hw.mng_cookie.vlan_id; |
|
2920 u16 old_vid = adapter->mng_vlan_id; |
|
2921 |
|
2922 if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
|
2923 e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid); |
|
2924 adapter->mng_vlan_id = vid; |
|
2925 } |
|
2926 |
|
2927 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
|
2928 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), old_vid); |
|
2929 } |
|
2930 |
|
2931 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
2932 { |
|
2933 u16 vid; |
|
2934 |
|
2935 e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); |
|
2936 |
|
2937 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
|
2938 e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
|
2939 } |
|
2940 |
|
2941 static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
|
2942 { |
|
2943 struct e1000_hw *hw = &adapter->hw; |
|
2944 u32 manc, manc2h, mdef, i, j; |
|
2945 |
|
2946 if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) |
|
2947 return; |
|
2948 |
|
2949 manc = er32(MANC); |
|
2950 |
|
2951 /* enable receiving management packets to the host. this will probably |
|
2952 * generate destination unreachable messages from the host OS, but |
|
2953 * the packets will be handled on SMBUS |
|
2954 */ |
|
2955 manc |= E1000_MANC_EN_MNG2HOST; |
|
2956 manc2h = er32(MANC2H); |
|
2957 |
|
2958 switch (hw->mac.type) { |
|
2959 default: |
|
2960 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); |
|
2961 break; |
|
2962 case e1000_82574: |
|
2963 case e1000_82583: |
|
2964 /* Check if IPMI pass-through decision filter already exists; |
|
2965 * if so, enable it. |
|
2966 */ |
|
2967 for (i = 0, j = 0; i < 8; i++) { |
|
2968 mdef = er32(MDEF(i)); |
|
2969 |
|
2970 /* Ignore filters with anything other than IPMI ports */ |
|
2971 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2972 continue; |
|
2973 |
|
2974 /* Enable this decision filter in MANC2H */ |
|
2975 if (mdef) |
|
2976 manc2h |= (1 << i); |
|
2977 |
|
2978 j |= mdef; |
|
2979 } |
|
2980 |
|
2981 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
|
2982 break; |
|
2983 |
|
2984 /* Create new decision filter in an empty filter */ |
|
2985 for (i = 0, j = 0; i < 8; i++) |
|
2986 if (er32(MDEF(i)) == 0) { |
|
2987 ew32(MDEF(i), (E1000_MDEF_PORT_623 | |
|
2988 E1000_MDEF_PORT_664)); |
|
2989 manc2h |= (1 << 1); |
|
2990 j++; |
|
2991 break; |
|
2992 } |
|
2993 |
|
2994 if (!j) |
|
2995 e_warn("Unable to create IPMI pass-through filter\n"); |
|
2996 break; |
|
2997 } |
|
2998 |
|
2999 ew32(MANC2H, manc2h); |
|
3000 ew32(MANC, manc); |
|
3001 } |
|
3002 |
|
3003 /** |
|
3004 * e1000_configure_tx - Configure Transmit Unit after Reset |
|
3005 * @adapter: board private structure |
|
3006 * |
|
3007 * Configure the Tx unit of the MAC after a reset. |
|
3008 **/ |
|
3009 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
3010 { |
|
3011 struct e1000_hw *hw = &adapter->hw; |
|
3012 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
3013 u64 tdba; |
|
3014 u32 tdlen, tctl, tarc; |
|
3015 |
|
3016 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
3017 tdba = tx_ring->dma; |
|
3018 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); |
|
3019 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
|
3020 ew32(TDBAH(0), (tdba >> 32)); |
|
3021 ew32(TDLEN(0), tdlen); |
|
3022 ew32(TDH(0), 0); |
|
3023 ew32(TDT(0), 0); |
|
3024 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0); |
|
3025 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0); |
|
3026 |
|
3027 /* Set the Tx Interrupt Delay register */ |
|
3028 ew32(TIDV, adapter->tx_int_delay); |
|
3029 /* Tx irq moderation */ |
|
3030 ew32(TADV, adapter->tx_abs_int_delay); |
|
3031 |
|
3032 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
3033 u32 txdctl = er32(TXDCTL(0)); |
|
3034 |
|
3035 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
|
3036 E1000_TXDCTL_WTHRESH); |
|
3037 /* set up some performance related parameters to encourage the |
|
3038 * hardware to use the bus more efficiently in bursts, depends |
|
3039 * on the tx_int_delay to be enabled, |
|
3040 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls |
|
3041 * hthresh = 1 ==> prefetch when one or more available |
|
3042 * pthresh = 0x1f ==> prefetch if internal cache 31 or less |
|
3043 * BEWARE: this seems to work but should be considered first if |
|
3044 * there are Tx hangs or other Tx related bugs |
|
3045 */ |
|
3046 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; |
|
3047 ew32(TXDCTL(0), txdctl); |
|
3048 } |
|
3049 /* erratum work around: set txdctl the same for both queues */ |
|
3050 ew32(TXDCTL(1), er32(TXDCTL(0))); |
|
3051 |
|
3052 /* Program the Transmit Control Register */ |
|
3053 tctl = er32(TCTL); |
|
3054 tctl &= ~E1000_TCTL_CT; |
|
3055 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
3056 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
3057 |
|
3058 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
|
3059 tarc = er32(TARC(0)); |
|
3060 /* set the speed mode bit, we'll clear it if we're not at |
|
3061 * gigabit link later |
|
3062 */ |
|
3063 #define SPEED_MODE_BIT (1 << 21) |
|
3064 tarc |= SPEED_MODE_BIT; |
|
3065 ew32(TARC(0), tarc); |
|
3066 } |
|
3067 |
|
3068 /* errata: program both queues to unweighted RR */ |
|
3069 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { |
|
3070 tarc = er32(TARC(0)); |
|
3071 tarc |= 1; |
|
3072 ew32(TARC(0), tarc); |
|
3073 tarc = er32(TARC(1)); |
|
3074 tarc |= 1; |
|
3075 ew32(TARC(1), tarc); |
|
3076 } |
|
3077 |
|
3078 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
3079 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
3080 |
|
3081 /* only set IDE if we are delaying interrupts using the timers */ |
|
3082 if (adapter->tx_int_delay) |
|
3083 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
3084 |
|
3085 /* enable Report Status bit */ |
|
3086 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
3087 |
|
3088 ew32(TCTL, tctl); |
|
3089 |
|
3090 hw->mac.ops.config_collision_dist(hw); |
|
3091 } |
|
3092 |
|
3093 /** |
|
3094 * e1000_setup_rctl - configure the receive control registers |
|
3095 * @adapter: Board private structure |
|
3096 **/ |
|
3097 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
3098 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
3099 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
3100 { |
|
3101 struct e1000_hw *hw = &adapter->hw; |
|
3102 u32 rctl, rfctl; |
|
3103 u32 pages = 0; |
|
3104 |
|
3105 /* Workaround Si errata on PCHx - configure jumbo frame flow. |
|
3106 * If jumbo frames not set, program related MAC/PHY registers |
|
3107 * to h/w defaults |
|
3108 */ |
|
3109 if (hw->mac.type >= e1000_pch2lan) { |
|
3110 s32 ret_val; |
|
3111 |
|
3112 if (adapter->netdev->mtu > ETH_DATA_LEN) |
|
3113 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); |
|
3114 else |
|
3115 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); |
|
3116 |
|
3117 if (ret_val) |
|
3118 e_dbg("failed to enable|disable jumbo frame workaround mode\n"); |
|
3119 } |
|
3120 |
|
3121 /* Program MC offset vector base */ |
|
3122 rctl = er32(RCTL); |
|
3123 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
3124 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
3125 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
3126 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
3127 |
|
3128 /* Do not Store bad packets */ |
|
3129 rctl &= ~E1000_RCTL_SBP; |
|
3130 |
|
3131 /* Enable Long Packet receive */ |
|
3132 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
3133 rctl &= ~E1000_RCTL_LPE; |
|
3134 else |
|
3135 rctl |= E1000_RCTL_LPE; |
|
3136 |
|
3137 /* Some systems expect that the CRC is included in SMBUS traffic. The |
|
3138 * hardware strips the CRC before sending to both SMBUS (BMC) and to |
|
3139 * host memory when this is enabled |
|
3140 */ |
|
3141 if (adapter->flags2 & FLAG2_CRC_STRIPPING) |
|
3142 rctl |= E1000_RCTL_SECRC; |
|
3143 |
|
3144 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
|
3145 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { |
|
3146 u16 phy_data; |
|
3147 |
|
3148 e1e_rphy(hw, PHY_REG(770, 26), &phy_data); |
|
3149 phy_data &= 0xfff8; |
|
3150 phy_data |= (1 << 2); |
|
3151 e1e_wphy(hw, PHY_REG(770, 26), phy_data); |
|
3152 |
|
3153 e1e_rphy(hw, 22, &phy_data); |
|
3154 phy_data &= 0x0fff; |
|
3155 phy_data |= (1 << 14); |
|
3156 e1e_wphy(hw, 0x10, 0x2823); |
|
3157 e1e_wphy(hw, 0x11, 0x0003); |
|
3158 e1e_wphy(hw, 22, phy_data); |
|
3159 } |
|
3160 |
|
3161 /* Setup buffer sizes */ |
|
3162 rctl &= ~E1000_RCTL_SZ_4096; |
|
3163 rctl |= E1000_RCTL_BSEX; |
|
3164 switch (adapter->rx_buffer_len) { |
|
3165 case 2048: |
|
3166 default: |
|
3167 rctl |= E1000_RCTL_SZ_2048; |
|
3168 rctl &= ~E1000_RCTL_BSEX; |
|
3169 break; |
|
3170 case 4096: |
|
3171 rctl |= E1000_RCTL_SZ_4096; |
|
3172 break; |
|
3173 case 8192: |
|
3174 rctl |= E1000_RCTL_SZ_8192; |
|
3175 break; |
|
3176 case 16384: |
|
3177 rctl |= E1000_RCTL_SZ_16384; |
|
3178 break; |
|
3179 } |
|
3180 |
|
3181 /* Enable Extended Status in all Receive Descriptors */ |
|
3182 rfctl = er32(RFCTL); |
|
3183 rfctl |= E1000_RFCTL_EXTEN; |
|
3184 ew32(RFCTL, rfctl); |
|
3185 |
|
3186 /* 82571 and greater support packet-split where the protocol |
|
3187 * header is placed in skb->data and the packet data is |
|
3188 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
3189 * In the case of a non-split, skb->data is linearly filled, |
|
3190 * followed by the page buffers. Therefore, skb->data is |
|
3191 * sized to hold the largest protocol header. |
|
3192 * |
|
3193 * allocations using alloc_page take too long for regular MTU |
|
3194 * so only enable packet split for jumbo frames |
|
3195 * |
|
3196 * Using pages when the page size is greater than 16k wastes |
|
3197 * a lot of memory, since we allocate 3 pages at all times |
|
3198 * per packet. |
|
3199 */ |
|
3200 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
3201 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
|
3202 adapter->rx_ps_pages = pages; |
|
3203 else |
|
3204 adapter->rx_ps_pages = 0; |
|
3205 |
|
3206 if (adapter->rx_ps_pages) { |
|
3207 u32 psrctl = 0; |
|
3208 |
|
3209 /* Enable Packet split descriptors */ |
|
3210 rctl |= E1000_RCTL_DTYP_PS; |
|
3211 |
|
3212 psrctl |= adapter->rx_ps_bsize0 >> E1000_PSRCTL_BSIZE0_SHIFT; |
|
3213 |
|
3214 switch (adapter->rx_ps_pages) { |
|
3215 case 3: |
|
3216 psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE3_SHIFT; |
|
3217 /* fall-through */ |
|
3218 case 2: |
|
3219 psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE2_SHIFT; |
|
3220 /* fall-through */ |
|
3221 case 1: |
|
3222 psrctl |= PAGE_SIZE >> E1000_PSRCTL_BSIZE1_SHIFT; |
|
3223 break; |
|
3224 } |
|
3225 |
|
3226 ew32(PSRCTL, psrctl); |
|
3227 } |
|
3228 |
|
3229 /* This is useful for sniffing bad packets. */ |
|
3230 if (adapter->netdev->features & NETIF_F_RXALL) { |
|
3231 /* UPE and MPE will be handled by normal PROMISC logic |
|
3232 * in e1000e_set_rx_mode |
|
3233 */ |
|
3234 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
|
3235 E1000_RCTL_BAM | /* RX All Bcast Pkts */ |
|
3236 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ |
|
3237 |
|
3238 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ |
|
3239 E1000_RCTL_DPF | /* Allow filtered pause */ |
|
3240 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ |
|
3241 /* Do not mess with E1000_CTRL_VME, it affects transmit as well, |
|
3242 * and that breaks VLANs. |
|
3243 */ |
|
3244 } |
|
3245 |
|
3246 ew32(RCTL, rctl); |
|
3247 /* just started the receive unit, no need to restart */ |
|
3248 adapter->flags &= ~FLAG_RESTART_NOW; |
|
3249 } |
|
3250 |
|
3251 /** |
|
3252 * e1000_configure_rx - Configure Receive Unit after Reset |
|
3253 * @adapter: board private structure |
|
3254 * |
|
3255 * Configure the Rx unit of the MAC after a reset. |
|
3256 **/ |
|
3257 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
3258 { |
|
3259 struct e1000_hw *hw = &adapter->hw; |
|
3260 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3261 u64 rdba; |
|
3262 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
3263 |
|
3264 if (adapter->rx_ps_pages) { |
|
3265 /* this is a 32 byte descriptor */ |
|
3266 rdlen = rx_ring->count * |
|
3267 sizeof(union e1000_rx_desc_packet_split); |
|
3268 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
3269 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
3270 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3271 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3272 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
3273 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
3274 } else { |
|
3275 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
|
3276 adapter->clean_rx = e1000_clean_rx_irq; |
|
3277 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
3278 } |
|
3279 |
|
3280 /* disable receives while setting up the descriptors */ |
|
3281 rctl = er32(RCTL); |
|
3282 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
3283 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3284 e1e_flush(); |
|
3285 usleep_range(10000, 20000); |
|
3286 |
|
3287 if (adapter->flags2 & FLAG2_DMA_BURST) { |
|
3288 /* set the writeback threshold (only takes effect if the RDTR |
|
3289 * is set). set GRAN=1 and write back up to 0x4 worth, and |
|
3290 * enable prefetching of 0x20 Rx descriptors |
|
3291 * granularity = 01 |
|
3292 * wthresh = 04, |
|
3293 * hthresh = 04, |
|
3294 * pthresh = 0x20 |
|
3295 */ |
|
3296 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3297 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); |
|
3298 |
|
3299 /* override the delay timers for enabling bursting, only if |
|
3300 * the value was not set by the user via module options |
|
3301 */ |
|
3302 if (adapter->rx_int_delay == DEFAULT_RDTR) |
|
3303 adapter->rx_int_delay = BURST_RDTR; |
|
3304 if (adapter->rx_abs_int_delay == DEFAULT_RADV) |
|
3305 adapter->rx_abs_int_delay = BURST_RADV; |
|
3306 } |
|
3307 |
|
3308 /* set the Receive Delay Timer Register */ |
|
3309 ew32(RDTR, adapter->rx_int_delay); |
|
3310 |
|
3311 /* irq moderation */ |
|
3312 ew32(RADV, adapter->rx_abs_int_delay); |
|
3313 if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
|
3314 e1000e_write_itr(adapter, adapter->itr); |
|
3315 |
|
3316 ctrl_ext = er32(CTRL_EXT); |
|
3317 /* Auto-Mask interrupts upon ICR access */ |
|
3318 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
3319 ew32(IAM, 0xffffffff); |
|
3320 ew32(CTRL_EXT, ctrl_ext); |
|
3321 e1e_flush(); |
|
3322 |
|
3323 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
3324 * the Base and Length of the Rx Descriptor Ring |
|
3325 */ |
|
3326 rdba = rx_ring->dma; |
|
3327 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
|
3328 ew32(RDBAH(0), (rdba >> 32)); |
|
3329 ew32(RDLEN(0), rdlen); |
|
3330 ew32(RDH(0), 0); |
|
3331 ew32(RDT(0), 0); |
|
3332 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0); |
|
3333 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0); |
|
3334 |
|
3335 /* Enable Receive Checksum Offload for TCP and UDP */ |
|
3336 rxcsum = er32(RXCSUM); |
|
3337 if (adapter->netdev->features & NETIF_F_RXCSUM) |
|
3338 rxcsum |= E1000_RXCSUM_TUOFL; |
|
3339 else |
|
3340 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
3341 ew32(RXCSUM, rxcsum); |
|
3342 |
|
3343 /* With jumbo frames, excessive C-state transition latencies result |
|
3344 * in dropped transactions. |
|
3345 */ |
|
3346 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3347 u32 lat = |
|
3348 ((er32(PBA) & E1000_PBA_RXA_MASK) * 1024 - |
|
3349 adapter->max_frame_size) * 8 / 1000; |
|
3350 |
|
3351 if (adapter->flags & FLAG_IS_ICH) { |
|
3352 u32 rxdctl = er32(RXDCTL(0)); |
|
3353 |
|
3354 ew32(RXDCTL(0), rxdctl | 0x3); |
|
3355 } |
|
3356 |
|
3357 pm_qos_update_request(&adapter->netdev->pm_qos_req, lat); |
|
3358 } else { |
|
3359 pm_qos_update_request(&adapter->netdev->pm_qos_req, |
|
3360 PM_QOS_DEFAULT_VALUE); |
|
3361 } |
|
3362 |
|
3363 /* Enable Receives */ |
|
3364 ew32(RCTL, rctl); |
|
3365 } |
|
3366 |
|
3367 /** |
|
3368 * e1000e_write_mc_addr_list - write multicast addresses to MTA |
|
3369 * @netdev: network interface device structure |
|
3370 * |
|
3371 * Writes multicast address list to the MTA hash table. |
|
3372 * Returns: -ENOMEM on failure |
|
3373 * 0 on no addresses written |
|
3374 * X on writing X addresses to MTA |
|
3375 */ |
|
3376 static int e1000e_write_mc_addr_list(struct net_device *netdev) |
|
3377 { |
|
3378 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3379 struct e1000_hw *hw = &adapter->hw; |
|
3380 struct netdev_hw_addr *ha; |
|
3381 u8 *mta_list; |
|
3382 int i; |
|
3383 |
|
3384 if (netdev_mc_empty(netdev)) { |
|
3385 /* nothing to program, so clear mc list */ |
|
3386 hw->mac.ops.update_mc_addr_list(hw, NULL, 0); |
|
3387 return 0; |
|
3388 } |
|
3389 |
|
3390 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); |
|
3391 if (!mta_list) |
|
3392 return -ENOMEM; |
|
3393 |
|
3394 /* update_mc_addr_list expects a packed array of only addresses. */ |
|
3395 i = 0; |
|
3396 netdev_for_each_mc_addr(ha, netdev) |
|
3397 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
|
3398 |
|
3399 hw->mac.ops.update_mc_addr_list(hw, mta_list, i); |
|
3400 kfree(mta_list); |
|
3401 |
|
3402 return netdev_mc_count(netdev); |
|
3403 } |
|
3404 |
|
3405 /** |
|
3406 * e1000e_write_uc_addr_list - write unicast addresses to RAR table |
|
3407 * @netdev: network interface device structure |
|
3408 * |
|
3409 * Writes unicast address list to the RAR table. |
|
3410 * Returns: -ENOMEM on failure/insufficient address space |
|
3411 * 0 on no addresses written |
|
3412 * X on writing X addresses to the RAR table |
|
3413 **/ |
|
3414 static int e1000e_write_uc_addr_list(struct net_device *netdev) |
|
3415 { |
|
3416 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3417 struct e1000_hw *hw = &adapter->hw; |
|
3418 unsigned int rar_entries; |
|
3419 int count = 0; |
|
3420 |
|
3421 rar_entries = hw->mac.ops.rar_get_count(hw); |
|
3422 |
|
3423 /* save a rar entry for our hardware address */ |
|
3424 rar_entries--; |
|
3425 |
|
3426 /* save a rar entry for the LAA workaround */ |
|
3427 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) |
|
3428 rar_entries--; |
|
3429 |
|
3430 /* return ENOMEM indicating insufficient memory for addresses */ |
|
3431 if (netdev_uc_count(netdev) > rar_entries) |
|
3432 return -ENOMEM; |
|
3433 |
|
3434 if (!netdev_uc_empty(netdev) && rar_entries) { |
|
3435 struct netdev_hw_addr *ha; |
|
3436 |
|
3437 /* write the addresses in reverse order to avoid write |
|
3438 * combining |
|
3439 */ |
|
3440 netdev_for_each_uc_addr(ha, netdev) { |
|
3441 int rval; |
|
3442 |
|
3443 if (!rar_entries) |
|
3444 break; |
|
3445 rval = hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); |
|
3446 if (rval < 0) |
|
3447 return -ENOMEM; |
|
3448 count++; |
|
3449 } |
|
3450 } |
|
3451 |
|
3452 /* zero out the remaining RAR entries not used above */ |
|
3453 for (; rar_entries > 0; rar_entries--) { |
|
3454 ew32(RAH(rar_entries), 0); |
|
3455 ew32(RAL(rar_entries), 0); |
|
3456 } |
|
3457 e1e_flush(); |
|
3458 |
|
3459 return count; |
|
3460 } |
|
3461 |
|
3462 /** |
|
3463 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set |
|
3464 * @netdev: network interface device structure |
|
3465 * |
|
3466 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast |
|
3467 * address list or the network interface flags are updated. This routine is |
|
3468 * responsible for configuring the hardware for proper unicast, multicast, |
|
3469 * promiscuous mode, and all-multi behavior. |
|
3470 **/ |
|
3471 static void e1000e_set_rx_mode(struct net_device *netdev) |
|
3472 { |
|
3473 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3474 struct e1000_hw *hw = &adapter->hw; |
|
3475 u32 rctl; |
|
3476 |
|
3477 if (pm_runtime_suspended(netdev->dev.parent)) |
|
3478 return; |
|
3479 |
|
3480 /* Check for Promiscuous and All Multicast modes */ |
|
3481 rctl = er32(RCTL); |
|
3482 |
|
3483 /* clear the affected bits */ |
|
3484 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3485 |
|
3486 if (netdev->flags & IFF_PROMISC) { |
|
3487 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
3488 /* Do not hardware filter VLANs in promisc mode */ |
|
3489 e1000e_vlan_filter_disable(adapter); |
|
3490 } else { |
|
3491 int count; |
|
3492 |
|
3493 if (netdev->flags & IFF_ALLMULTI) { |
|
3494 rctl |= E1000_RCTL_MPE; |
|
3495 } else { |
|
3496 /* Write addresses to the MTA, if the attempt fails |
|
3497 * then we should just turn on promiscuous mode so |
|
3498 * that we can at least receive multicast traffic |
|
3499 */ |
|
3500 count = e1000e_write_mc_addr_list(netdev); |
|
3501 if (count < 0) |
|
3502 rctl |= E1000_RCTL_MPE; |
|
3503 } |
|
3504 e1000e_vlan_filter_enable(adapter); |
|
3505 /* Write addresses to available RAR registers, if there is not |
|
3506 * sufficient space to store all the addresses then enable |
|
3507 * unicast promiscuous mode |
|
3508 */ |
|
3509 count = e1000e_write_uc_addr_list(netdev); |
|
3510 if (count < 0) |
|
3511 rctl |= E1000_RCTL_UPE; |
|
3512 } |
|
3513 |
|
3514 ew32(RCTL, rctl); |
|
3515 |
|
3516 if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) |
|
3517 e1000e_vlan_strip_enable(adapter); |
|
3518 else |
|
3519 e1000e_vlan_strip_disable(adapter); |
|
3520 } |
|
3521 |
|
3522 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter) |
|
3523 { |
|
3524 struct e1000_hw *hw = &adapter->hw; |
|
3525 u32 mrqc, rxcsum; |
|
3526 int i; |
|
3527 static const u32 rsskey[10] = { |
|
3528 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0, |
|
3529 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe |
|
3530 }; |
|
3531 |
|
3532 /* Fill out hash function seed */ |
|
3533 for (i = 0; i < 10; i++) |
|
3534 ew32(RSSRK(i), rsskey[i]); |
|
3535 |
|
3536 /* Direct all traffic to queue 0 */ |
|
3537 for (i = 0; i < 32; i++) |
|
3538 ew32(RETA(i), 0); |
|
3539 |
|
3540 /* Disable raw packet checksumming so that RSS hash is placed in |
|
3541 * descriptor on writeback. |
|
3542 */ |
|
3543 rxcsum = er32(RXCSUM); |
|
3544 rxcsum |= E1000_RXCSUM_PCSD; |
|
3545 |
|
3546 ew32(RXCSUM, rxcsum); |
|
3547 |
|
3548 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 | |
|
3549 E1000_MRQC_RSS_FIELD_IPV4_TCP | |
|
3550 E1000_MRQC_RSS_FIELD_IPV6 | |
|
3551 E1000_MRQC_RSS_FIELD_IPV6_TCP | |
|
3552 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
|
3553 |
|
3554 ew32(MRQC, mrqc); |
|
3555 } |
|
3556 |
|
3557 /** |
|
3558 * e1000e_get_base_timinca - get default SYSTIM time increment attributes |
|
3559 * @adapter: board private structure |
|
3560 * @timinca: pointer to returned time increment attributes |
|
3561 * |
|
3562 * Get attributes for incrementing the System Time Register SYSTIML/H at |
|
3563 * the default base frequency, and set the cyclecounter shift value. |
|
3564 **/ |
|
3565 s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca) |
|
3566 { |
|
3567 struct e1000_hw *hw = &adapter->hw; |
|
3568 u32 incvalue, incperiod, shift; |
|
3569 |
|
3570 /* Make sure clock is enabled on I217 before checking the frequency */ |
|
3571 if ((hw->mac.type == e1000_pch_lpt) && |
|
3572 !(er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) && |
|
3573 !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_ENABLED)) { |
|
3574 u32 fextnvm7 = er32(FEXTNVM7); |
|
3575 |
|
3576 if (!(fextnvm7 & (1 << 0))) { |
|
3577 ew32(FEXTNVM7, fextnvm7 | (1 << 0)); |
|
3578 e1e_flush(); |
|
3579 } |
|
3580 } |
|
3581 |
|
3582 switch (hw->mac.type) { |
|
3583 case e1000_pch2lan: |
|
3584 case e1000_pch_lpt: |
|
3585 /* On I217, the clock frequency is 25MHz or 96MHz as |
|
3586 * indicated by the System Clock Frequency Indication |
|
3587 */ |
|
3588 if ((hw->mac.type != e1000_pch_lpt) || |
|
3589 (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_SYSCFI)) { |
|
3590 /* Stable 96MHz frequency */ |
|
3591 incperiod = INCPERIOD_96MHz; |
|
3592 incvalue = INCVALUE_96MHz; |
|
3593 shift = INCVALUE_SHIFT_96MHz; |
|
3594 adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHz; |
|
3595 break; |
|
3596 } |
|
3597 /* fall-through */ |
|
3598 case e1000_82574: |
|
3599 case e1000_82583: |
|
3600 /* Stable 25MHz frequency */ |
|
3601 incperiod = INCPERIOD_25MHz; |
|
3602 incvalue = INCVALUE_25MHz; |
|
3603 shift = INCVALUE_SHIFT_25MHz; |
|
3604 adapter->cc.shift = shift; |
|
3605 break; |
|
3606 default: |
|
3607 return -EINVAL; |
|
3608 } |
|
3609 |
|
3610 *timinca = ((incperiod << E1000_TIMINCA_INCPERIOD_SHIFT) | |
|
3611 ((incvalue << shift) & E1000_TIMINCA_INCVALUE_MASK)); |
|
3612 |
|
3613 return 0; |
|
3614 } |
|
3615 |
|
3616 /** |
|
3617 * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable |
|
3618 * @adapter: board private structure |
|
3619 * |
|
3620 * Outgoing time stamping can be enabled and disabled. Play nice and |
|
3621 * disable it when requested, although it shouldn't cause any overhead |
|
3622 * when no packet needs it. At most one packet in the queue may be |
|
3623 * marked for time stamping, otherwise it would be impossible to tell |
|
3624 * for sure to which packet the hardware time stamp belongs. |
|
3625 * |
|
3626 * Incoming time stamping has to be configured via the hardware filters. |
|
3627 * Not all combinations are supported, in particular event type has to be |
|
3628 * specified. Matching the kind of event packet is not supported, with the |
|
3629 * exception of "all V2 events regardless of level 2 or 4". |
|
3630 **/ |
|
3631 static int e1000e_config_hwtstamp(struct e1000_adapter *adapter, |
|
3632 struct hwtstamp_config *config) |
|
3633 { |
|
3634 struct e1000_hw *hw = &adapter->hw; |
|
3635 u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; |
|
3636 u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; |
|
3637 u32 rxmtrl = 0; |
|
3638 u16 rxudp = 0; |
|
3639 bool is_l4 = false; |
|
3640 bool is_l2 = false; |
|
3641 u32 regval; |
|
3642 s32 ret_val; |
|
3643 |
|
3644 if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP)) |
|
3645 return -EINVAL; |
|
3646 |
|
3647 /* flags reserved for future extensions - must be zero */ |
|
3648 if (config->flags) |
|
3649 return -EINVAL; |
|
3650 |
|
3651 switch (config->tx_type) { |
|
3652 case HWTSTAMP_TX_OFF: |
|
3653 tsync_tx_ctl = 0; |
|
3654 break; |
|
3655 case HWTSTAMP_TX_ON: |
|
3656 break; |
|
3657 default: |
|
3658 return -ERANGE; |
|
3659 } |
|
3660 |
|
3661 switch (config->rx_filter) { |
|
3662 case HWTSTAMP_FILTER_NONE: |
|
3663 tsync_rx_ctl = 0; |
|
3664 break; |
|
3665 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
|
3666 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
|
3667 rxmtrl = E1000_RXMTRL_PTP_V1_SYNC_MESSAGE; |
|
3668 is_l4 = true; |
|
3669 break; |
|
3670 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
|
3671 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
|
3672 rxmtrl = E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE; |
|
3673 is_l4 = true; |
|
3674 break; |
|
3675 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
|
3676 /* Also time stamps V2 L2 Path Delay Request/Response */ |
|
3677 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; |
|
3678 rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; |
|
3679 is_l2 = true; |
|
3680 break; |
|
3681 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
|
3682 /* Also time stamps V2 L2 Path Delay Request/Response. */ |
|
3683 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; |
|
3684 rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; |
|
3685 is_l2 = true; |
|
3686 break; |
|
3687 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
|
3688 /* Hardware cannot filter just V2 L4 Sync messages; |
|
3689 * fall-through to V2 (both L2 and L4) Sync. |
|
3690 */ |
|
3691 case HWTSTAMP_FILTER_PTP_V2_SYNC: |
|
3692 /* Also time stamps V2 Path Delay Request/Response. */ |
|
3693 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
|
3694 rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; |
|
3695 is_l2 = true; |
|
3696 is_l4 = true; |
|
3697 break; |
|
3698 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
|
3699 /* Hardware cannot filter just V2 L4 Delay Request messages; |
|
3700 * fall-through to V2 (both L2 and L4) Delay Request. |
|
3701 */ |
|
3702 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
|
3703 /* Also time stamps V2 Path Delay Request/Response. */ |
|
3704 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
|
3705 rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; |
|
3706 is_l2 = true; |
|
3707 is_l4 = true; |
|
3708 break; |
|
3709 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
|
3710 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: |
|
3711 /* Hardware cannot filter just V2 L4 or L2 Event messages; |
|
3712 * fall-through to all V2 (both L2 and L4) Events. |
|
3713 */ |
|
3714 case HWTSTAMP_FILTER_PTP_V2_EVENT: |
|
3715 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; |
|
3716 config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; |
|
3717 is_l2 = true; |
|
3718 is_l4 = true; |
|
3719 break; |
|
3720 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
|
3721 /* For V1, the hardware can only filter Sync messages or |
|
3722 * Delay Request messages but not both so fall-through to |
|
3723 * time stamp all packets. |
|
3724 */ |
|
3725 case HWTSTAMP_FILTER_ALL: |
|
3726 is_l2 = true; |
|
3727 is_l4 = true; |
|
3728 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; |
|
3729 config->rx_filter = HWTSTAMP_FILTER_ALL; |
|
3730 break; |
|
3731 default: |
|
3732 return -ERANGE; |
|
3733 } |
|
3734 |
|
3735 adapter->hwtstamp_config = *config; |
|
3736 |
|
3737 /* enable/disable Tx h/w time stamping */ |
|
3738 regval = er32(TSYNCTXCTL); |
|
3739 regval &= ~E1000_TSYNCTXCTL_ENABLED; |
|
3740 regval |= tsync_tx_ctl; |
|
3741 ew32(TSYNCTXCTL, regval); |
|
3742 if ((er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) != |
|
3743 (regval & E1000_TSYNCTXCTL_ENABLED)) { |
|
3744 e_err("Timesync Tx Control register not set as expected\n"); |
|
3745 return -EAGAIN; |
|
3746 } |
|
3747 |
|
3748 /* enable/disable Rx h/w time stamping */ |
|
3749 regval = er32(TSYNCRXCTL); |
|
3750 regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK); |
|
3751 regval |= tsync_rx_ctl; |
|
3752 ew32(TSYNCRXCTL, regval); |
|
3753 if ((er32(TSYNCRXCTL) & (E1000_TSYNCRXCTL_ENABLED | |
|
3754 E1000_TSYNCRXCTL_TYPE_MASK)) != |
|
3755 (regval & (E1000_TSYNCRXCTL_ENABLED | |
|
3756 E1000_TSYNCRXCTL_TYPE_MASK))) { |
|
3757 e_err("Timesync Rx Control register not set as expected\n"); |
|
3758 return -EAGAIN; |
|
3759 } |
|
3760 |
|
3761 /* L2: define ethertype filter for time stamped packets */ |
|
3762 if (is_l2) |
|
3763 rxmtrl |= ETH_P_1588; |
|
3764 |
|
3765 /* define which PTP packets get time stamped */ |
|
3766 ew32(RXMTRL, rxmtrl); |
|
3767 |
|
3768 /* Filter by destination port */ |
|
3769 if (is_l4) { |
|
3770 rxudp = PTP_EV_PORT; |
|
3771 cpu_to_be16s(&rxudp); |
|
3772 } |
|
3773 ew32(RXUDP, rxudp); |
|
3774 |
|
3775 e1e_flush(); |
|
3776 |
|
3777 /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */ |
|
3778 er32(RXSTMPH); |
|
3779 er32(TXSTMPH); |
|
3780 |
|
3781 /* Get and set the System Time Register SYSTIM base frequency */ |
|
3782 ret_val = e1000e_get_base_timinca(adapter, ®val); |
|
3783 if (ret_val) |
|
3784 return ret_val; |
|
3785 ew32(TIMINCA, regval); |
|
3786 |
|
3787 /* reset the ns time counter */ |
|
3788 timecounter_init(&adapter->tc, &adapter->cc, |
|
3789 ktime_to_ns(ktime_get_real())); |
|
3790 |
|
3791 return 0; |
|
3792 } |
|
3793 |
|
3794 /** |
|
3795 * e1000_configure - configure the hardware for Rx and Tx |
|
3796 * @adapter: private board structure |
|
3797 **/ |
|
3798 static void e1000_configure(struct e1000_adapter *adapter) |
|
3799 { |
|
3800 struct e1000_ring *rx_ring = adapter->rx_ring; |
|
3801 |
|
3802 e1000e_set_rx_mode(adapter->netdev); |
|
3803 |
|
3804 e1000_restore_vlan(adapter); |
|
3805 e1000_init_manageability_pt(adapter); |
|
3806 |
|
3807 e1000_configure_tx(adapter); |
|
3808 |
|
3809 if (adapter->netdev->features & NETIF_F_RXHASH) |
|
3810 e1000e_setup_rss_hash(adapter); |
|
3811 e1000_setup_rctl(adapter); |
|
3812 e1000_configure_rx(adapter); |
|
3813 if (adapter->ecdev) { |
|
3814 adapter->alloc_rx_buf(rx_ring, adapter->rx_ring->count, GFP_KERNEL); |
|
3815 } else { |
|
3816 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), |
|
3817 GFP_KERNEL); |
|
3818 } |
|
3819 } |
|
3820 |
|
3821 /** |
|
3822 * e1000e_power_up_phy - restore link in case the phy was powered down |
|
3823 * @adapter: address of board private structure |
|
3824 * |
|
3825 * The phy may be powered down to save power and turn off link when the |
|
3826 * driver is unloaded and wake on lan is not enabled (among others) |
|
3827 * *** this routine MUST be followed by a call to e1000e_reset *** |
|
3828 **/ |
|
3829 void e1000e_power_up_phy(struct e1000_adapter *adapter) |
|
3830 { |
|
3831 if (adapter->hw.phy.ops.power_up) |
|
3832 adapter->hw.phy.ops.power_up(&adapter->hw); |
|
3833 |
|
3834 adapter->hw.mac.ops.setup_link(&adapter->hw); |
|
3835 } |
|
3836 |
|
3837 /** |
|
3838 * e1000_power_down_phy - Power down the PHY |
|
3839 * |
|
3840 * Power down the PHY so no link is implied when interface is down. |
|
3841 * The PHY cannot be powered down if management or WoL is active. |
|
3842 */ |
|
3843 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
3844 { |
|
3845 if (adapter->hw.phy.ops.power_down) |
|
3846 adapter->hw.phy.ops.power_down(&adapter->hw); |
|
3847 } |
|
3848 |
|
3849 /** |
|
3850 * e1000e_reset - bring the hardware into a known good state |
|
3851 * |
|
3852 * This function boots the hardware and enables some settings that |
|
3853 * require a configuration cycle of the hardware - those cannot be |
|
3854 * set/changed during runtime. After reset the device needs to be |
|
3855 * properly configured for Rx, Tx etc. |
|
3856 */ |
|
3857 void e1000e_reset(struct e1000_adapter *adapter) |
|
3858 { |
|
3859 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
3860 struct e1000_fc_info *fc = &adapter->hw.fc; |
|
3861 struct e1000_hw *hw = &adapter->hw; |
|
3862 u32 tx_space, min_tx_space, min_rx_space; |
|
3863 u32 pba = adapter->pba; |
|
3864 u16 hwm; |
|
3865 |
|
3866 /* reset Packet Buffer Allocation to default */ |
|
3867 ew32(PBA, pba); |
|
3868 |
|
3869 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
3870 /* To maintain wire speed transmits, the Tx FIFO should be |
|
3871 * large enough to accommodate two full transmit packets, |
|
3872 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
3873 * the Rx FIFO should be large enough to accommodate at least |
|
3874 * one full receive packet and is similarly rounded up and |
|
3875 * expressed in KB. |
|
3876 */ |
|
3877 pba = er32(PBA); |
|
3878 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
3879 tx_space = pba >> 16; |
|
3880 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
3881 pba &= 0xffff; |
|
3882 /* the Tx fifo also stores 16 bytes of information about the Tx |
|
3883 * but don't include ethernet FCS because hardware appends it |
|
3884 */ |
|
3885 min_tx_space = (adapter->max_frame_size + |
|
3886 sizeof(struct e1000_tx_desc) - ETH_FCS_LEN) * 2; |
|
3887 min_tx_space = ALIGN(min_tx_space, 1024); |
|
3888 min_tx_space >>= 10; |
|
3889 /* software strips receive CRC, so leave room for it */ |
|
3890 min_rx_space = adapter->max_frame_size; |
|
3891 min_rx_space = ALIGN(min_rx_space, 1024); |
|
3892 min_rx_space >>= 10; |
|
3893 |
|
3894 /* If current Tx allocation is less than the min Tx FIFO size, |
|
3895 * and the min Tx FIFO size is less than the current Rx FIFO |
|
3896 * allocation, take space away from current Rx allocation |
|
3897 */ |
|
3898 if ((tx_space < min_tx_space) && |
|
3899 ((min_tx_space - tx_space) < pba)) { |
|
3900 pba -= min_tx_space - tx_space; |
|
3901 |
|
3902 /* if short on Rx space, Rx wins and must trump Tx |
|
3903 * adjustment |
|
3904 */ |
|
3905 if (pba < min_rx_space) |
|
3906 pba = min_rx_space; |
|
3907 } |
|
3908 |
|
3909 ew32(PBA, pba); |
|
3910 } |
|
3911 |
|
3912 /* flow control settings |
|
3913 * |
|
3914 * The high water mark must be low enough to fit one full frame |
|
3915 * (or the size used for early receive) above it in the Rx FIFO. |
|
3916 * Set it to the lower of: |
|
3917 * - 90% of the Rx FIFO size, and |
|
3918 * - the full Rx FIFO size minus one full frame |
|
3919 */ |
|
3920 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
|
3921 fc->pause_time = 0xFFFF; |
|
3922 else |
|
3923 fc->pause_time = E1000_FC_PAUSE_TIME; |
|
3924 fc->send_xon = true; |
|
3925 fc->current_mode = fc->requested_mode; |
|
3926 |
|
3927 switch (hw->mac.type) { |
|
3928 case e1000_ich9lan: |
|
3929 case e1000_ich10lan: |
|
3930 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3931 pba = 14; |
|
3932 ew32(PBA, pba); |
|
3933 fc->high_water = 0x2800; |
|
3934 fc->low_water = fc->high_water - 8; |
|
3935 break; |
|
3936 } |
|
3937 /* fall-through */ |
|
3938 default: |
|
3939 hwm = min(((pba << 10) * 9 / 10), |
|
3940 ((pba << 10) - adapter->max_frame_size)); |
|
3941 |
|
3942 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
|
3943 fc->low_water = fc->high_water - 8; |
|
3944 break; |
|
3945 case e1000_pchlan: |
|
3946 /* Workaround PCH LOM adapter hangs with certain network |
|
3947 * loads. If hangs persist, try disabling Tx flow control. |
|
3948 */ |
|
3949 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
3950 fc->high_water = 0x3500; |
|
3951 fc->low_water = 0x1500; |
|
3952 } else { |
|
3953 fc->high_water = 0x5000; |
|
3954 fc->low_water = 0x3000; |
|
3955 } |
|
3956 fc->refresh_time = 0x1000; |
|
3957 break; |
|
3958 case e1000_pch2lan: |
|
3959 case e1000_pch_lpt: |
|
3960 fc->refresh_time = 0x0400; |
|
3961 |
|
3962 if (adapter->netdev->mtu <= ETH_DATA_LEN) { |
|
3963 fc->high_water = 0x05C20; |
|
3964 fc->low_water = 0x05048; |
|
3965 fc->pause_time = 0x0650; |
|
3966 break; |
|
3967 } |
|
3968 |
|
3969 pba = 14; |
|
3970 ew32(PBA, pba); |
|
3971 fc->high_water = ((pba << 10) * 9 / 10) & E1000_FCRTH_RTH; |
|
3972 fc->low_water = ((pba << 10) * 8 / 10) & E1000_FCRTL_RTL; |
|
3973 break; |
|
3974 } |
|
3975 |
|
3976 /* Alignment of Tx data is on an arbitrary byte boundary with the |
|
3977 * maximum size per Tx descriptor limited only to the transmit |
|
3978 * allocation of the packet buffer minus 96 bytes with an upper |
|
3979 * limit of 24KB due to receive synchronization limitations. |
|
3980 */ |
|
3981 adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96, |
|
3982 24 << 10); |
|
3983 |
|
3984 /* Disable Adaptive Interrupt Moderation if 2 full packets cannot |
|
3985 * fit in receive buffer. |
|
3986 */ |
|
3987 if (adapter->itr_setting & 0x3) { |
|
3988 if ((adapter->max_frame_size * 2) > (pba << 10)) { |
|
3989 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
|
3990 dev_info(&adapter->pdev->dev, |
|
3991 "Interrupt Throttle Rate off\n"); |
|
3992 adapter->flags2 |= FLAG2_DISABLE_AIM; |
|
3993 e1000e_write_itr(adapter, 0); |
|
3994 } |
|
3995 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
|
3996 dev_info(&adapter->pdev->dev, |
|
3997 "Interrupt Throttle Rate on\n"); |
|
3998 adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
|
3999 adapter->itr = 20000; |
|
4000 e1000e_write_itr(adapter, adapter->itr); |
|
4001 } |
|
4002 } |
|
4003 |
|
4004 /* Allow time for pending master requests to run */ |
|
4005 mac->ops.reset_hw(hw); |
|
4006 |
|
4007 /* For parts with AMT enabled, let the firmware know |
|
4008 * that the network interface is in control |
|
4009 */ |
|
4010 if (adapter->flags & FLAG_HAS_AMT) |
|
4011 e1000e_get_hw_control(adapter); |
|
4012 |
|
4013 ew32(WUC, 0); |
|
4014 |
|
4015 if (mac->ops.init_hw(hw)) |
|
4016 e_err("Hardware Error\n"); |
|
4017 |
|
4018 e1000_update_mng_vlan(adapter); |
|
4019 |
|
4020 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
4021 ew32(VET, ETH_P_8021Q); |
|
4022 |
|
4023 e1000e_reset_adaptive(hw); |
|
4024 |
|
4025 /* initialize systim and reset the ns time counter */ |
|
4026 e1000e_config_hwtstamp(adapter, &adapter->hwtstamp_config); |
|
4027 |
|
4028 /* Set EEE advertisement as appropriate */ |
|
4029 if (adapter->flags2 & FLAG2_HAS_EEE) { |
|
4030 s32 ret_val; |
|
4031 u16 adv_addr; |
|
4032 |
|
4033 switch (hw->phy.type) { |
|
4034 case e1000_phy_82579: |
|
4035 adv_addr = I82579_EEE_ADVERTISEMENT; |
|
4036 break; |
|
4037 case e1000_phy_i217: |
|
4038 adv_addr = I217_EEE_ADVERTISEMENT; |
|
4039 break; |
|
4040 default: |
|
4041 dev_err(&adapter->pdev->dev, |
|
4042 "Invalid PHY type setting EEE advertisement\n"); |
|
4043 return; |
|
4044 } |
|
4045 |
|
4046 ret_val = hw->phy.ops.acquire(hw); |
|
4047 if (ret_val) { |
|
4048 dev_err(&adapter->pdev->dev, |
|
4049 "EEE advertisement - unable to acquire PHY\n"); |
|
4050 return; |
|
4051 } |
|
4052 |
|
4053 e1000_write_emi_reg_locked(hw, adv_addr, |
|
4054 hw->dev_spec.ich8lan.eee_disable ? |
|
4055 0 : adapter->eee_advert); |
|
4056 |
|
4057 hw->phy.ops.release(hw); |
|
4058 } |
|
4059 |
|
4060 if (!netif_running(adapter->netdev) && |
|
4061 !test_bit(__E1000_TESTING, &adapter->state)) |
|
4062 e1000_power_down_phy(adapter); |
|
4063 |
|
4064 e1000_get_phy_info(hw); |
|
4065 |
|
4066 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
|
4067 !(adapter->flags & FLAG_SMART_POWER_DOWN)) { |
|
4068 u16 phy_data = 0; |
|
4069 /* speed up time to link by disabling smart power down, ignore |
|
4070 * the return value of this function because there is nothing |
|
4071 * different we would do if it failed |
|
4072 */ |
|
4073 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
|
4074 phy_data &= ~IGP02E1000_PM_SPD; |
|
4075 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); |
|
4076 } |
|
4077 } |
|
4078 |
|
4079 int e1000e_up(struct e1000_adapter *adapter) |
|
4080 { |
|
4081 struct e1000_hw *hw = &adapter->hw; |
|
4082 |
|
4083 /* hardware has been reset, we need to reload some things */ |
|
4084 e1000_configure(adapter); |
|
4085 |
|
4086 clear_bit(__E1000_DOWN, &adapter->state); |
|
4087 |
|
4088 if (!adapter->ecdev) { |
|
4089 if (adapter->msix_entries) |
|
4090 e1000_configure_msix(adapter); |
|
4091 |
|
4092 e1000_irq_enable(adapter); |
|
4093 |
|
4094 netif_start_queue(adapter->netdev); |
|
4095 |
|
4096 /* fire a link change interrupt to start the watchdog */ |
|
4097 if (adapter->msix_entries) |
|
4098 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
4099 else |
|
4100 ew32(ICS, E1000_ICS_LSC); |
|
4101 } |
|
4102 |
|
4103 return 0; |
|
4104 } |
|
4105 |
|
4106 static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
|
4107 { |
|
4108 struct e1000_hw *hw = &adapter->hw; |
|
4109 |
|
4110 if (!(adapter->flags2 & FLAG2_DMA_BURST)) |
|
4111 return; |
|
4112 |
|
4113 /* flush pending descriptor writebacks to memory */ |
|
4114 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
4115 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
4116 |
|
4117 /* execute the writes immediately */ |
|
4118 e1e_flush(); |
|
4119 |
|
4120 /* due to rare timing issues, write to TIDV/RDTR again to ensure the |
|
4121 * write is successful |
|
4122 */ |
|
4123 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); |
|
4124 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); |
|
4125 |
|
4126 /* execute the writes immediately */ |
|
4127 e1e_flush(); |
|
4128 } |
|
4129 |
|
4130 static void e1000e_update_stats(struct e1000_adapter *adapter); |
|
4131 |
|
4132 /** |
|
4133 * e1000e_down - quiesce the device and optionally reset the hardware |
|
4134 * @adapter: board private structure |
|
4135 * @reset: boolean flag to reset the hardware or not |
|
4136 */ |
|
4137 void e1000e_down(struct e1000_adapter *adapter, bool reset) |
|
4138 { |
|
4139 struct net_device *netdev = adapter->netdev; |
|
4140 struct e1000_hw *hw = &adapter->hw; |
|
4141 u32 tctl, rctl; |
|
4142 |
|
4143 /* signal that we're down so the interrupt handler does not |
|
4144 * reschedule our watchdog timer |
|
4145 */ |
|
4146 set_bit(__E1000_DOWN, &adapter->state); |
|
4147 |
|
4148 /* disable receives in the hardware */ |
|
4149 rctl = er32(RCTL); |
|
4150 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
|
4151 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
4152 /* flush and sleep below */ |
|
4153 |
|
4154 if (!adapter->ecdev) |
|
4155 netif_stop_queue(netdev); |
|
4156 |
|
4157 /* disable transmits in the hardware */ |
|
4158 tctl = er32(TCTL); |
|
4159 tctl &= ~E1000_TCTL_EN; |
|
4160 ew32(TCTL, tctl); |
|
4161 |
|
4162 /* flush both disables and wait for them to finish */ |
|
4163 e1e_flush(); |
|
4164 usleep_range(10000, 20000); |
|
4165 |
|
4166 if (adapter->ecdev) { |
|
4167 ecdev_set_link(adapter->ecdev, 0); |
|
4168 } |
|
4169 else { |
|
4170 e1000_irq_disable(adapter); |
|
4171 |
|
4172 napi_synchronize(&adapter->napi); |
|
4173 |
|
4174 del_timer_sync(&adapter->watchdog_timer); |
|
4175 del_timer_sync(&adapter->phy_info_timer); |
|
4176 |
|
4177 netif_carrier_off(netdev); |
|
4178 |
|
4179 spin_lock(&adapter->stats64_lock); |
|
4180 e1000e_update_stats(adapter); |
|
4181 spin_unlock(&adapter->stats64_lock); |
|
4182 } |
|
4183 |
|
4184 e1000e_flush_descriptors(adapter); |
|
4185 e1000_clean_tx_ring(adapter->tx_ring); |
|
4186 e1000_clean_rx_ring(adapter->rx_ring); |
|
4187 |
|
4188 adapter->link_speed = 0; |
|
4189 adapter->link_duplex = 0; |
|
4190 |
|
4191 /* Disable Si errata workaround on PCHx for jumbo frame flow */ |
|
4192 if ((hw->mac.type >= e1000_pch2lan) && |
|
4193 (adapter->netdev->mtu > ETH_DATA_LEN) && |
|
4194 e1000_lv_jumbo_workaround_ich8lan(hw, false)) |
|
4195 e_dbg("failed to disable jumbo frame workaround mode\n"); |
|
4196 |
|
4197 if (reset && !pci_channel_offline(adapter->pdev)) |
|
4198 e1000e_reset(adapter); |
|
4199 } |
|
4200 |
|
4201 void e1000e_reinit_locked(struct e1000_adapter *adapter) |
|
4202 { |
|
4203 might_sleep(); |
|
4204 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
4205 usleep_range(1000, 2000); |
|
4206 e1000e_down(adapter, true); |
|
4207 e1000e_up(adapter); |
|
4208 clear_bit(__E1000_RESETTING, &adapter->state); |
|
4209 } |
|
4210 |
|
4211 /** |
|
4212 * e1000e_cyclecounter_read - read raw cycle counter (used by time counter) |
|
4213 * @cc: cyclecounter structure |
|
4214 **/ |
|
4215 static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc) |
|
4216 { |
|
4217 struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter, |
|
4218 cc); |
|
4219 struct e1000_hw *hw = &adapter->hw; |
|
4220 cycle_t systim, systim_next; |
|
4221 |
|
4222 /* latch SYSTIMH on read of SYSTIML */ |
|
4223 systim = (cycle_t)er32(SYSTIML); |
|
4224 systim |= (cycle_t)er32(SYSTIMH) << 32; |
|
4225 |
|
4226 if ((hw->mac.type == e1000_82574) || (hw->mac.type == e1000_82583)) { |
|
4227 u64 incvalue, time_delta, rem, temp; |
|
4228 int i; |
|
4229 |
|
4230 /* errata for 82574/82583 possible bad bits read from SYSTIMH/L |
|
4231 * check to see that the time is incrementing at a reasonable |
|
4232 * rate and is a multiple of incvalue |
|
4233 */ |
|
4234 incvalue = er32(TIMINCA) & E1000_TIMINCA_INCVALUE_MASK; |
|
4235 for (i = 0; i < E1000_MAX_82574_SYSTIM_REREADS; i++) { |
|
4236 /* latch SYSTIMH on read of SYSTIML */ |
|
4237 systim_next = (cycle_t)er32(SYSTIML); |
|
4238 systim_next |= (cycle_t)er32(SYSTIMH) << 32; |
|
4239 |
|
4240 time_delta = systim_next - systim; |
|
4241 temp = time_delta; |
|
4242 rem = do_div(temp, incvalue); |
|
4243 |
|
4244 systim = systim_next; |
|
4245 |
|
4246 if ((time_delta < E1000_82574_SYSTIM_EPSILON) && |
|
4247 (rem == 0)) |
|
4248 break; |
|
4249 } |
|
4250 } |
|
4251 return systim; |
|
4252 } |
|
4253 |
|
4254 /** |
|
4255 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
4256 * @adapter: board private structure to initialize |
|
4257 * |
|
4258 * e1000_sw_init initializes the Adapter private data structure. |
|
4259 * Fields are initialized based on PCI device information and |
|
4260 * OS network device settings (MTU size). |
|
4261 **/ |
|
4262 static int e1000_sw_init(struct e1000_adapter *adapter) |
|
4263 { |
|
4264 struct net_device *netdev = adapter->netdev; |
|
4265 |
|
4266 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
|
4267 adapter->rx_ps_bsize0 = 128; |
|
4268 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
|
4269 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
|
4270 adapter->tx_ring_count = E1000_DEFAULT_TXD; |
|
4271 adapter->rx_ring_count = E1000_DEFAULT_RXD; |
|
4272 |
|
4273 spin_lock_init(&adapter->stats64_lock); |
|
4274 |
|
4275 e1000e_set_interrupt_capability(adapter); |
|
4276 |
|
4277 if (e1000_alloc_queues(adapter)) |
|
4278 return -ENOMEM; |
|
4279 |
|
4280 /* Setup hardware time stamping cyclecounter */ |
|
4281 if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { |
|
4282 adapter->cc.read = e1000e_cyclecounter_read; |
|
4283 adapter->cc.mask = CLOCKSOURCE_MASK(64); |
|
4284 adapter->cc.mult = 1; |
|
4285 /* cc.shift set in e1000e_get_base_tininca() */ |
|
4286 |
|
4287 spin_lock_init(&adapter->systim_lock); |
|
4288 INIT_WORK(&adapter->tx_hwtstamp_work, e1000e_tx_hwtstamp_work); |
|
4289 } |
|
4290 |
|
4291 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
4292 e1000_irq_disable(adapter); |
|
4293 |
|
4294 set_bit(__E1000_DOWN, &adapter->state); |
|
4295 return 0; |
|
4296 } |
|
4297 |
|
4298 /** |
|
4299 * e1000_intr_msi_test - Interrupt Handler |
|
4300 * @irq: interrupt number |
|
4301 * @data: pointer to a network interface device structure |
|
4302 **/ |
|
4303 static irqreturn_t e1000_intr_msi_test(int __always_unused irq, void *data) |
|
4304 { |
|
4305 struct net_device *netdev = data; |
|
4306 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4307 struct e1000_hw *hw = &adapter->hw; |
|
4308 u32 icr = er32(ICR); |
|
4309 |
|
4310 e_dbg("icr is %08X\n", icr); |
|
4311 if (icr & E1000_ICR_RXSEQ) { |
|
4312 adapter->flags &= ~FLAG_MSI_TEST_FAILED; |
|
4313 /* Force memory writes to complete before acknowledging the |
|
4314 * interrupt is handled. |
|
4315 */ |
|
4316 wmb(); |
|
4317 } |
|
4318 |
|
4319 return IRQ_HANDLED; |
|
4320 } |
|
4321 |
|
4322 /** |
|
4323 * e1000_test_msi_interrupt - Returns 0 for successful test |
|
4324 * @adapter: board private struct |
|
4325 * |
|
4326 * code flow taken from tg3.c |
|
4327 **/ |
|
4328 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) |
|
4329 { |
|
4330 struct net_device *netdev = adapter->netdev; |
|
4331 struct e1000_hw *hw = &adapter->hw; |
|
4332 int err; |
|
4333 |
|
4334 /* poll_enable hasn't been called yet, so don't need disable */ |
|
4335 /* clear any pending events */ |
|
4336 er32(ICR); |
|
4337 |
|
4338 /* free the real vector and request a test handler */ |
|
4339 e1000_free_irq(adapter); |
|
4340 e1000e_reset_interrupt_capability(adapter); |
|
4341 |
|
4342 /* Assume that the test fails, if it succeeds then the test |
|
4343 * MSI irq handler will unset this flag |
|
4344 */ |
|
4345 adapter->flags |= FLAG_MSI_TEST_FAILED; |
|
4346 |
|
4347 err = pci_enable_msi(adapter->pdev); |
|
4348 if (err) |
|
4349 goto msi_test_failed; |
|
4350 |
|
4351 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
|
4352 netdev->name, netdev); |
|
4353 if (err) { |
|
4354 pci_disable_msi(adapter->pdev); |
|
4355 goto msi_test_failed; |
|
4356 } |
|
4357 |
|
4358 /* Force memory writes to complete before enabling and firing an |
|
4359 * interrupt. |
|
4360 */ |
|
4361 wmb(); |
|
4362 |
|
4363 e1000_irq_enable(adapter); |
|
4364 |
|
4365 /* fire an unusual interrupt on the test handler */ |
|
4366 ew32(ICS, E1000_ICS_RXSEQ); |
|
4367 e1e_flush(); |
|
4368 msleep(100); |
|
4369 |
|
4370 e1000_irq_disable(adapter); |
|
4371 |
|
4372 rmb(); /* read flags after interrupt has been fired */ |
|
4373 |
|
4374 if (adapter->flags & FLAG_MSI_TEST_FAILED) { |
|
4375 adapter->int_mode = E1000E_INT_MODE_LEGACY; |
|
4376 e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
|
4377 } else { |
|
4378 e_dbg("MSI interrupt test succeeded!\n"); |
|
4379 } |
|
4380 |
|
4381 free_irq(adapter->pdev->irq, netdev); |
|
4382 pci_disable_msi(adapter->pdev); |
|
4383 |
|
4384 msi_test_failed: |
|
4385 e1000e_set_interrupt_capability(adapter); |
|
4386 return e1000_request_irq(adapter); |
|
4387 } |
|
4388 |
|
4389 /** |
|
4390 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored |
|
4391 * @adapter: board private struct |
|
4392 * |
|
4393 * code flow taken from tg3.c, called with e1000 interrupts disabled. |
|
4394 **/ |
|
4395 static int e1000_test_msi(struct e1000_adapter *adapter) |
|
4396 { |
|
4397 int err; |
|
4398 u16 pci_cmd; |
|
4399 |
|
4400 if (!(adapter->flags & FLAG_MSI_ENABLED)) |
|
4401 return 0; |
|
4402 |
|
4403 /* disable SERR in case the MSI write causes a master abort */ |
|
4404 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
4405 if (pci_cmd & PCI_COMMAND_SERR) |
|
4406 pci_write_config_word(adapter->pdev, PCI_COMMAND, |
|
4407 pci_cmd & ~PCI_COMMAND_SERR); |
|
4408 |
|
4409 err = e1000_test_msi_interrupt(adapter); |
|
4410 |
|
4411 /* re-enable SERR */ |
|
4412 if (pci_cmd & PCI_COMMAND_SERR) { |
|
4413 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); |
|
4414 pci_cmd |= PCI_COMMAND_SERR; |
|
4415 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); |
|
4416 } |
|
4417 |
|
4418 return err; |
|
4419 } |
|
4420 |
|
4421 /** |
|
4422 * e1000_open - Called when a network interface is made active |
|
4423 * @netdev: network interface device structure |
|
4424 * |
|
4425 * Returns 0 on success, negative value on failure |
|
4426 * |
|
4427 * The open entry point is called when a network interface is made |
|
4428 * active by the system (IFF_UP). At this point all resources needed |
|
4429 * for transmit and receive operations are allocated, the interrupt |
|
4430 * handler is registered with the OS, the watchdog timer is started, |
|
4431 * and the stack is notified that the interface is ready. |
|
4432 **/ |
|
4433 static int e1000_open(struct net_device *netdev) |
|
4434 { |
|
4435 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4436 struct e1000_hw *hw = &adapter->hw; |
|
4437 struct pci_dev *pdev = adapter->pdev; |
|
4438 int err; |
|
4439 |
|
4440 /* disallow open during test */ |
|
4441 if (test_bit(__E1000_TESTING, &adapter->state)) |
|
4442 return -EBUSY; |
|
4443 |
|
4444 pm_runtime_get_sync(&pdev->dev); |
|
4445 |
|
4446 if (adapter->ecdev) { |
|
4447 ecdev_set_link(adapter->ecdev, 0); |
|
4448 } else { |
|
4449 netif_carrier_off(netdev); |
|
4450 } |
|
4451 |
|
4452 /* allocate transmit descriptors */ |
|
4453 err = e1000e_setup_tx_resources(adapter->tx_ring); |
|
4454 if (err) |
|
4455 goto err_setup_tx; |
|
4456 |
|
4457 /* allocate receive descriptors */ |
|
4458 err = e1000e_setup_rx_resources(adapter->rx_ring); |
|
4459 if (err) |
|
4460 goto err_setup_rx; |
|
4461 |
|
4462 /* If AMT is enabled, let the firmware know that the network |
|
4463 * interface is now open and reset the part to a known state. |
|
4464 */ |
|
4465 if (adapter->flags & FLAG_HAS_AMT) { |
|
4466 e1000e_get_hw_control(adapter); |
|
4467 e1000e_reset(adapter); |
|
4468 } |
|
4469 |
|
4470 e1000e_power_up_phy(adapter); |
|
4471 |
|
4472 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4473 if ((adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
|
4474 e1000_update_mng_vlan(adapter); |
|
4475 |
|
4476 /* DMA latency requirement to workaround jumbo issue */ |
|
4477 pm_qos_add_request(&adapter->netdev->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, |
|
4478 PM_QOS_DEFAULT_VALUE); |
|
4479 |
|
4480 /* before we allocate an interrupt, we must be ready to handle it. |
|
4481 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
4482 * as soon as we call pci_request_irq, so we have to setup our |
|
4483 * clean_rx handler before we do so. |
|
4484 */ |
|
4485 e1000_configure(adapter); |
|
4486 |
|
4487 err = e1000_request_irq(adapter); |
|
4488 if (err) |
|
4489 goto err_req_irq; |
|
4490 |
|
4491 /* Work around PCIe errata with MSI interrupts causing some chipsets to |
|
4492 * ignore e1000e MSI messages, which means we need to test our MSI |
|
4493 * interrupt now |
|
4494 */ |
|
4495 if (!adapter->ecdev && adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
|
4496 err = e1000_test_msi(adapter); |
|
4497 if (err) { |
|
4498 e_err("Interrupt allocation failed\n"); |
|
4499 goto err_req_irq; |
|
4500 } |
|
4501 } |
|
4502 |
|
4503 /* From here on the code is the same as e1000e_up() */ |
|
4504 clear_bit(__E1000_DOWN, &adapter->state); |
|
4505 |
|
4506 if (!adapter->ecdev) { |
|
4507 napi_enable(&adapter->napi); |
|
4508 |
|
4509 e1000_irq_enable(adapter); |
|
4510 } |
|
4511 |
|
4512 adapter->tx_hang_recheck = false; |
|
4513 |
|
4514 if (!adapter->ecdev) { |
|
4515 netif_start_queue(netdev); |
|
4516 } |
|
4517 |
|
4518 hw->mac.get_link_status = true; |
|
4519 pm_runtime_put(&pdev->dev); |
|
4520 |
|
4521 /* fire a link status change interrupt to start the watchdog */ |
|
4522 if (adapter->msix_entries) |
|
4523 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); |
|
4524 else |
|
4525 ew32(ICS, E1000_ICS_LSC); |
|
4526 |
|
4527 return 0; |
|
4528 |
|
4529 err_req_irq: |
|
4530 e1000e_release_hw_control(adapter); |
|
4531 e1000_power_down_phy(adapter); |
|
4532 e1000e_free_rx_resources(adapter->rx_ring); |
|
4533 err_setup_rx: |
|
4534 e1000e_free_tx_resources(adapter->tx_ring); |
|
4535 err_setup_tx: |
|
4536 e1000e_reset(adapter); |
|
4537 pm_runtime_put_sync(&pdev->dev); |
|
4538 |
|
4539 return err; |
|
4540 } |
|
4541 |
|
4542 /** |
|
4543 * e1000_close - Disables a network interface |
|
4544 * @netdev: network interface device structure |
|
4545 * |
|
4546 * Returns 0, this is not allowed to fail |
|
4547 * |
|
4548 * The close entry point is called when an interface is de-activated |
|
4549 * by the OS. The hardware is still under the drivers control, but |
|
4550 * needs to be disabled. A global MAC reset is issued to stop the |
|
4551 * hardware, and all transmit and receive resources are freed. |
|
4552 **/ |
|
4553 static int e1000_close(struct net_device *netdev) |
|
4554 { |
|
4555 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4556 struct pci_dev *pdev = adapter->pdev; |
|
4557 int count = E1000_CHECK_RESET_COUNT; |
|
4558 |
|
4559 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
4560 usleep_range(10000, 20000); |
|
4561 |
|
4562 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
4563 |
|
4564 pm_runtime_get_sync(&pdev->dev); |
|
4565 |
|
4566 if (!test_bit(__E1000_DOWN, &adapter->state)) { |
|
4567 e1000e_down(adapter, true); |
|
4568 e1000_free_irq(adapter); |
|
4569 |
|
4570 /* Link status message must follow this format */ |
|
4571 pr_info("%s NIC Link is Down\n", adapter->netdev->name); |
|
4572 } |
|
4573 |
|
4574 if (!adapter->ecdev) { |
|
4575 napi_disable(&adapter->napi); |
|
4576 } |
|
4577 |
|
4578 e1000e_free_tx_resources(adapter->tx_ring); |
|
4579 e1000e_free_rx_resources(adapter->rx_ring); |
|
4580 |
|
4581 /* kill manageability vlan ID if supported, but not if a vlan with |
|
4582 * the same ID is registered on the host OS (let 8021q kill it) |
|
4583 */ |
|
4584 if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
|
4585 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
|
4586 adapter->mng_vlan_id); |
|
4587 |
|
4588 /* If AMT is enabled, let the firmware know that the network |
|
4589 * interface is now closed |
|
4590 */ |
|
4591 if ((adapter->flags & FLAG_HAS_AMT) && |
|
4592 !test_bit(__E1000_TESTING, &adapter->state)) |
|
4593 e1000e_release_hw_control(adapter); |
|
4594 |
|
4595 pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
|
4596 |
|
4597 pm_runtime_put_sync(&pdev->dev); |
|
4598 |
|
4599 return 0; |
|
4600 } |
|
4601 |
|
4602 /** |
|
4603 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
4604 * @netdev: network interface device structure |
|
4605 * @p: pointer to an address structure |
|
4606 * |
|
4607 * Returns 0 on success, negative on failure |
|
4608 **/ |
|
4609 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
4610 { |
|
4611 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4612 struct e1000_hw *hw = &adapter->hw; |
|
4613 struct sockaddr *addr = p; |
|
4614 |
|
4615 if (!is_valid_ether_addr(addr->sa_data)) |
|
4616 return -EADDRNOTAVAIL; |
|
4617 |
|
4618 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
4619 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
|
4620 |
|
4621 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
|
4622 |
|
4623 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { |
|
4624 /* activate the work around */ |
|
4625 e1000e_set_laa_state_82571(&adapter->hw, 1); |
|
4626 |
|
4627 /* Hold a copy of the LAA in RAR[14] This is done so that |
|
4628 * between the time RAR[0] gets clobbered and the time it |
|
4629 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
4630 * of the RARs and no incoming packets directed to this port |
|
4631 * are dropped. Eventually the LAA will be in RAR[0] and |
|
4632 * RAR[14] |
|
4633 */ |
|
4634 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, |
|
4635 adapter->hw.mac.rar_entry_count - 1); |
|
4636 } |
|
4637 |
|
4638 return 0; |
|
4639 } |
|
4640 |
|
4641 /** |
|
4642 * e1000e_update_phy_task - work thread to update phy |
|
4643 * @work: pointer to our work struct |
|
4644 * |
|
4645 * this worker thread exists because we must acquire a |
|
4646 * semaphore to read the phy, which we could msleep while |
|
4647 * waiting for it, and we can't msleep in a timer. |
|
4648 **/ |
|
4649 static void e1000e_update_phy_task(struct work_struct *work) |
|
4650 { |
|
4651 struct e1000_adapter *adapter = container_of(work, |
|
4652 struct e1000_adapter, |
|
4653 update_phy_task); |
|
4654 struct e1000_hw *hw = &adapter->hw; |
|
4655 |
|
4656 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4657 return; |
|
4658 |
|
4659 e1000_get_phy_info(hw); |
|
4660 |
|
4661 /* Enable EEE on 82579 after link up */ |
|
4662 if (hw->phy.type >= e1000_phy_82579) |
|
4663 e1000_set_eee_pchlan(hw); |
|
4664 } |
|
4665 |
|
4666 /** |
|
4667 * e1000_update_phy_info - timre call-back to update PHY info |
|
4668 * @data: pointer to adapter cast into an unsigned long |
|
4669 * |
|
4670 * Need to wait a few seconds after link up to get diagnostic information from |
|
4671 * the phy |
|
4672 **/ |
|
4673 static void e1000_update_phy_info(unsigned long data) |
|
4674 { |
|
4675 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
4676 |
|
4677 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
4678 return; |
|
4679 |
|
4680 schedule_work(&adapter->update_phy_task); |
|
4681 } |
|
4682 |
|
4683 /** |
|
4684 * e1000e_update_phy_stats - Update the PHY statistics counters |
|
4685 * @adapter: board private structure |
|
4686 * |
|
4687 * Read/clear the upper 16-bit PHY registers and read/accumulate lower |
|
4688 **/ |
|
4689 static void e1000e_update_phy_stats(struct e1000_adapter *adapter) |
|
4690 { |
|
4691 struct e1000_hw *hw = &adapter->hw; |
|
4692 s32 ret_val; |
|
4693 u16 phy_data; |
|
4694 |
|
4695 ret_val = hw->phy.ops.acquire(hw); |
|
4696 if (ret_val) |
|
4697 return; |
|
4698 |
|
4699 /* A page set is expensive so check if already on desired page. |
|
4700 * If not, set to the page with the PHY status registers. |
|
4701 */ |
|
4702 hw->phy.addr = 1; |
|
4703 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
|
4704 &phy_data); |
|
4705 if (ret_val) |
|
4706 goto release; |
|
4707 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
|
4708 ret_val = hw->phy.ops.set_page(hw, |
|
4709 HV_STATS_PAGE << IGP_PAGE_SHIFT); |
|
4710 if (ret_val) |
|
4711 goto release; |
|
4712 } |
|
4713 |
|
4714 /* Single Collision Count */ |
|
4715 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
|
4716 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); |
|
4717 if (!ret_val) |
|
4718 adapter->stats.scc += phy_data; |
|
4719 |
|
4720 /* Excessive Collision Count */ |
|
4721 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
|
4722 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); |
|
4723 if (!ret_val) |
|
4724 adapter->stats.ecol += phy_data; |
|
4725 |
|
4726 /* Multiple Collision Count */ |
|
4727 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
|
4728 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); |
|
4729 if (!ret_val) |
|
4730 adapter->stats.mcc += phy_data; |
|
4731 |
|
4732 /* Late Collision Count */ |
|
4733 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
|
4734 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); |
|
4735 if (!ret_val) |
|
4736 adapter->stats.latecol += phy_data; |
|
4737 |
|
4738 /* Collision Count - also used for adaptive IFS */ |
|
4739 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
|
4740 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); |
|
4741 if (!ret_val) |
|
4742 hw->mac.collision_delta = phy_data; |
|
4743 |
|
4744 /* Defer Count */ |
|
4745 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
|
4746 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); |
|
4747 if (!ret_val) |
|
4748 adapter->stats.dc += phy_data; |
|
4749 |
|
4750 /* Transmit with no CRS */ |
|
4751 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
|
4752 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); |
|
4753 if (!ret_val) |
|
4754 adapter->stats.tncrs += phy_data; |
|
4755 |
|
4756 release: |
|
4757 hw->phy.ops.release(hw); |
|
4758 } |
|
4759 |
|
4760 /** |
|
4761 * e1000e_update_stats - Update the board statistics counters |
|
4762 * @adapter: board private structure |
|
4763 **/ |
|
4764 static void e1000e_update_stats(struct e1000_adapter *adapter) |
|
4765 { |
|
4766 struct net_device *netdev = adapter->netdev; |
|
4767 struct e1000_hw *hw = &adapter->hw; |
|
4768 struct pci_dev *pdev = adapter->pdev; |
|
4769 |
|
4770 /* Prevent stats update while adapter is being reset, or if the pci |
|
4771 * connection is down. |
|
4772 */ |
|
4773 if (adapter->link_speed == 0) |
|
4774 return; |
|
4775 if (pci_channel_offline(pdev)) |
|
4776 return; |
|
4777 |
|
4778 adapter->stats.crcerrs += er32(CRCERRS); |
|
4779 adapter->stats.gprc += er32(GPRC); |
|
4780 adapter->stats.gorc += er32(GORCL); |
|
4781 er32(GORCH); /* Clear gorc */ |
|
4782 adapter->stats.bprc += er32(BPRC); |
|
4783 adapter->stats.mprc += er32(MPRC); |
|
4784 adapter->stats.roc += er32(ROC); |
|
4785 |
|
4786 adapter->stats.mpc += er32(MPC); |
|
4787 |
|
4788 /* Half-duplex statistics */ |
|
4789 if (adapter->link_duplex == HALF_DUPLEX) { |
|
4790 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { |
|
4791 e1000e_update_phy_stats(adapter); |
|
4792 } else { |
|
4793 adapter->stats.scc += er32(SCC); |
|
4794 adapter->stats.ecol += er32(ECOL); |
|
4795 adapter->stats.mcc += er32(MCC); |
|
4796 adapter->stats.latecol += er32(LATECOL); |
|
4797 adapter->stats.dc += er32(DC); |
|
4798 |
|
4799 hw->mac.collision_delta = er32(COLC); |
|
4800 |
|
4801 if ((hw->mac.type != e1000_82574) && |
|
4802 (hw->mac.type != e1000_82583)) |
|
4803 adapter->stats.tncrs += er32(TNCRS); |
|
4804 } |
|
4805 adapter->stats.colc += hw->mac.collision_delta; |
|
4806 } |
|
4807 |
|
4808 adapter->stats.xonrxc += er32(XONRXC); |
|
4809 adapter->stats.xontxc += er32(XONTXC); |
|
4810 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
4811 adapter->stats.xofftxc += er32(XOFFTXC); |
|
4812 adapter->stats.gptc += er32(GPTC); |
|
4813 adapter->stats.gotc += er32(GOTCL); |
|
4814 er32(GOTCH); /* Clear gotc */ |
|
4815 adapter->stats.rnbc += er32(RNBC); |
|
4816 adapter->stats.ruc += er32(RUC); |
|
4817 |
|
4818 adapter->stats.mptc += er32(MPTC); |
|
4819 adapter->stats.bptc += er32(BPTC); |
|
4820 |
|
4821 /* used for adaptive IFS */ |
|
4822 |
|
4823 hw->mac.tx_packet_delta = er32(TPT); |
|
4824 adapter->stats.tpt += hw->mac.tx_packet_delta; |
|
4825 |
|
4826 adapter->stats.algnerrc += er32(ALGNERRC); |
|
4827 adapter->stats.rxerrc += er32(RXERRC); |
|
4828 adapter->stats.cexterr += er32(CEXTERR); |
|
4829 adapter->stats.tsctc += er32(TSCTC); |
|
4830 adapter->stats.tsctfc += er32(TSCTFC); |
|
4831 |
|
4832 /* Fill out the OS statistics structure */ |
|
4833 netdev->stats.multicast = adapter->stats.mprc; |
|
4834 netdev->stats.collisions = adapter->stats.colc; |
|
4835 |
|
4836 /* Rx Errors */ |
|
4837 |
|
4838 /* RLEC on some newer hardware can be incorrect so build |
|
4839 * our own version based on RUC and ROC |
|
4840 */ |
|
4841 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
4842 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
4843 adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; |
|
4844 netdev->stats.rx_length_errors = adapter->stats.ruc + |
|
4845 adapter->stats.roc; |
|
4846 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
4847 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
4848 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
4849 |
|
4850 /* Tx Errors */ |
|
4851 netdev->stats.tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
|
4852 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
4853 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
4854 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
4855 |
|
4856 /* Tx Dropped needs to be maintained elsewhere */ |
|
4857 |
|
4858 /* Management Stats */ |
|
4859 adapter->stats.mgptc += er32(MGTPTC); |
|
4860 adapter->stats.mgprc += er32(MGTPRC); |
|
4861 adapter->stats.mgpdc += er32(MGTPDC); |
|
4862 |
|
4863 /* Correctable ECC Errors */ |
|
4864 if (hw->mac.type == e1000_pch_lpt) { |
|
4865 u32 pbeccsts = er32(PBECCSTS); |
|
4866 |
|
4867 adapter->corr_errors += |
|
4868 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; |
|
4869 adapter->uncorr_errors += |
|
4870 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> |
|
4871 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; |
|
4872 } |
|
4873 } |
|
4874 |
|
4875 /** |
|
4876 * e1000_phy_read_status - Update the PHY register status snapshot |
|
4877 * @adapter: board private structure |
|
4878 **/ |
|
4879 static void e1000_phy_read_status(struct e1000_adapter *adapter) |
|
4880 { |
|
4881 struct e1000_hw *hw = &adapter->hw; |
|
4882 struct e1000_phy_regs *phy = &adapter->phy_regs; |
|
4883 |
|
4884 if (!pm_runtime_suspended((&adapter->pdev->dev)->parent) && |
|
4885 (er32(STATUS) & E1000_STATUS_LU) && |
|
4886 (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
|
4887 int ret_val; |
|
4888 |
|
4889 ret_val = e1e_rphy(hw, MII_BMCR, &phy->bmcr); |
|
4890 ret_val |= e1e_rphy(hw, MII_BMSR, &phy->bmsr); |
|
4891 ret_val |= e1e_rphy(hw, MII_ADVERTISE, &phy->advertise); |
|
4892 ret_val |= e1e_rphy(hw, MII_LPA, &phy->lpa); |
|
4893 ret_val |= e1e_rphy(hw, MII_EXPANSION, &phy->expansion); |
|
4894 ret_val |= e1e_rphy(hw, MII_CTRL1000, &phy->ctrl1000); |
|
4895 ret_val |= e1e_rphy(hw, MII_STAT1000, &phy->stat1000); |
|
4896 ret_val |= e1e_rphy(hw, MII_ESTATUS, &phy->estatus); |
|
4897 if (ret_val) |
|
4898 e_warn("Error reading PHY register\n"); |
|
4899 } else { |
|
4900 /* Do not read PHY registers if link is not up |
|
4901 * Set values to typical power-on defaults |
|
4902 */ |
|
4903 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); |
|
4904 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | |
|
4905 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | |
|
4906 BMSR_ERCAP); |
|
4907 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | |
|
4908 ADVERTISE_ALL | ADVERTISE_CSMA); |
|
4909 phy->lpa = 0; |
|
4910 phy->expansion = EXPANSION_ENABLENPAGE; |
|
4911 phy->ctrl1000 = ADVERTISE_1000FULL; |
|
4912 phy->stat1000 = 0; |
|
4913 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); |
|
4914 } |
|
4915 } |
|
4916 |
|
4917 static void e1000_print_link_info(struct e1000_adapter *adapter) |
|
4918 { |
|
4919 struct e1000_hw *hw = &adapter->hw; |
|
4920 u32 ctrl = er32(CTRL); |
|
4921 |
|
4922 /* Link status message must follow this format for user tools */ |
|
4923 pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", |
|
4924 adapter->netdev->name, adapter->link_speed, |
|
4925 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half", |
|
4926 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" : |
|
4927 (ctrl & E1000_CTRL_RFCE) ? "Rx" : |
|
4928 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"); |
|
4929 } |
|
4930 |
|
4931 static bool e1000e_has_link(struct e1000_adapter *adapter) |
|
4932 { |
|
4933 struct e1000_hw *hw = &adapter->hw; |
|
4934 bool link_active = false; |
|
4935 s32 ret_val = 0; |
|
4936 |
|
4937 /* get_link_status is set on LSC (link status) interrupt or |
|
4938 * Rx sequence error interrupt. get_link_status will stay |
|
4939 * false until the check_for_link establishes link |
|
4940 * for copper adapters ONLY |
|
4941 */ |
|
4942 switch (hw->phy.media_type) { |
|
4943 case e1000_media_type_copper: |
|
4944 if (hw->mac.get_link_status) { |
|
4945 ret_val = hw->mac.ops.check_for_link(hw); |
|
4946 link_active = !hw->mac.get_link_status; |
|
4947 } else { |
|
4948 link_active = true; |
|
4949 } |
|
4950 break; |
|
4951 case e1000_media_type_fiber: |
|
4952 ret_val = hw->mac.ops.check_for_link(hw); |
|
4953 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
4954 break; |
|
4955 case e1000_media_type_internal_serdes: |
|
4956 ret_val = hw->mac.ops.check_for_link(hw); |
|
4957 link_active = adapter->hw.mac.serdes_has_link; |
|
4958 break; |
|
4959 default: |
|
4960 case e1000_media_type_unknown: |
|
4961 break; |
|
4962 } |
|
4963 |
|
4964 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && |
|
4965 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
4966 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ |
|
4967 e_info("Gigabit has been disabled, downgrading speed\n"); |
|
4968 } |
|
4969 |
|
4970 return link_active; |
|
4971 } |
|
4972 |
|
4973 static void e1000e_enable_receives(struct e1000_adapter *adapter) |
|
4974 { |
|
4975 /* make sure the receive unit is started */ |
|
4976 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && |
|
4977 (adapter->flags & FLAG_RESTART_NOW)) { |
|
4978 struct e1000_hw *hw = &adapter->hw; |
|
4979 u32 rctl = er32(RCTL); |
|
4980 |
|
4981 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
4982 adapter->flags &= ~FLAG_RESTART_NOW; |
|
4983 } |
|
4984 } |
|
4985 |
|
4986 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
|
4987 { |
|
4988 struct e1000_hw *hw = &adapter->hw; |
|
4989 |
|
4990 /* With 82574 controllers, PHY needs to be checked periodically |
|
4991 * for hung state and reset, if two calls return true |
|
4992 */ |
|
4993 if (e1000_check_phy_82574(hw)) |
|
4994 adapter->phy_hang_count++; |
|
4995 else |
|
4996 adapter->phy_hang_count = 0; |
|
4997 |
|
4998 if (adapter->phy_hang_count > 1) { |
|
4999 adapter->phy_hang_count = 0; |
|
5000 e_dbg("PHY appears hung - resetting\n"); |
|
5001 schedule_work(&adapter->reset_task); |
|
5002 } |
|
5003 } |
|
5004 |
|
5005 /** |
|
5006 * e1000_watchdog - Timer Call-back |
|
5007 * @data: pointer to adapter cast into an unsigned long |
|
5008 **/ |
|
5009 static void e1000_watchdog(unsigned long data) |
|
5010 { |
|
5011 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
5012 |
|
5013 /* Do the rest outside of interrupt context */ |
|
5014 schedule_work(&adapter->watchdog_task); |
|
5015 |
|
5016 /* TODO: make this use queue_delayed_work() */ |
|
5017 } |
|
5018 |
|
5019 static void e1000_watchdog_task(struct work_struct *work) |
|
5020 { |
|
5021 struct e1000_adapter *adapter = container_of(work, |
|
5022 struct e1000_adapter, |
|
5023 watchdog_task); |
|
5024 struct net_device *netdev = adapter->netdev; |
|
5025 struct e1000_mac_info *mac = &adapter->hw.mac; |
|
5026 struct e1000_phy_info *phy = &adapter->hw.phy; |
|
5027 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
5028 struct e1000_hw *hw = &adapter->hw; |
|
5029 u32 link, tctl; |
|
5030 |
|
5031 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
5032 return; |
|
5033 |
|
5034 link = e1000e_has_link(adapter); |
|
5035 if ((adapter->ecdev && (ecdev_get_link(adapter->ecdev)) && link) |
|
5036 || (!adapter->ecdev && (netif_carrier_ok(netdev)) && link)) { |
|
5037 if (!adapter->ecdev) { |
|
5038 /* Cancel scheduled suspend requests. */ |
|
5039 pm_runtime_resume(netdev->dev.parent); |
|
5040 } |
|
5041 |
|
5042 e1000e_enable_receives(adapter); |
|
5043 goto link_up; |
|
5044 } |
|
5045 |
|
5046 if ((e1000e_enable_tx_pkt_filtering(hw)) && |
|
5047 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) |
|
5048 e1000_update_mng_vlan(adapter); |
|
5049 |
|
5050 if (link) { |
|
5051 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
5052 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
5053 bool txb2b = true; |
|
5054 |
|
5055 /* Cancel scheduled suspend requests. */ |
|
5056 pm_runtime_resume(netdev->dev.parent); |
|
5057 |
|
5058 /* update snapshot of PHY registers on LSC */ |
|
5059 e1000_phy_read_status(adapter); |
|
5060 mac->ops.get_link_up_info(&adapter->hw, |
|
5061 &adapter->link_speed, |
|
5062 &adapter->link_duplex); |
|
5063 e1000_print_link_info(adapter); |
|
5064 |
|
5065 /* check if SmartSpeed worked */ |
|
5066 e1000e_check_downshift(hw); |
|
5067 if (phy->speed_downgraded) |
|
5068 netdev_warn(netdev, |
|
5069 "Link Speed was downgraded by SmartSpeed\n"); |
|
5070 |
|
5071 /* On supported PHYs, check for duplex mismatch only |
|
5072 * if link has autonegotiated at 10/100 half |
|
5073 */ |
|
5074 if ((hw->phy.type == e1000_phy_igp_3 || |
|
5075 hw->phy.type == e1000_phy_bm) && |
|
5076 hw->mac.autoneg && |
|
5077 (adapter->link_speed == SPEED_10 || |
|
5078 adapter->link_speed == SPEED_100) && |
|
5079 (adapter->link_duplex == HALF_DUPLEX)) { |
|
5080 u16 autoneg_exp; |
|
5081 |
|
5082 e1e_rphy(hw, MII_EXPANSION, &autoneg_exp); |
|
5083 |
|
5084 if (!(autoneg_exp & EXPANSION_NWAY)) |
|
5085 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n"); |
|
5086 } |
|
5087 |
|
5088 /* adjust timeout factor according to speed/duplex */ |
|
5089 adapter->tx_timeout_factor = 1; |
|
5090 switch (adapter->link_speed) { |
|
5091 case SPEED_10: |
|
5092 txb2b = false; |
|
5093 adapter->tx_timeout_factor = 16; |
|
5094 break; |
|
5095 case SPEED_100: |
|
5096 txb2b = false; |
|
5097 adapter->tx_timeout_factor = 10; |
|
5098 break; |
|
5099 } |
|
5100 |
|
5101 /* workaround: re-program speed mode bit after |
|
5102 * link-up event |
|
5103 */ |
|
5104 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
|
5105 !txb2b) { |
|
5106 u32 tarc0; |
|
5107 |
|
5108 tarc0 = er32(TARC(0)); |
|
5109 tarc0 &= ~SPEED_MODE_BIT; |
|
5110 ew32(TARC(0), tarc0); |
|
5111 } |
|
5112 |
|
5113 /* disable TSO for pcie and 10/100 speeds, to avoid |
|
5114 * some hardware issues |
|
5115 */ |
|
5116 if (!(adapter->flags & FLAG_TSO_FORCE)) { |
|
5117 switch (adapter->link_speed) { |
|
5118 case SPEED_10: |
|
5119 case SPEED_100: |
|
5120 e_info("10/100 speed: disabling TSO\n"); |
|
5121 netdev->features &= ~NETIF_F_TSO; |
|
5122 netdev->features &= ~NETIF_F_TSO6; |
|
5123 break; |
|
5124 case SPEED_1000: |
|
5125 netdev->features |= NETIF_F_TSO; |
|
5126 netdev->features |= NETIF_F_TSO6; |
|
5127 break; |
|
5128 default: |
|
5129 /* oops */ |
|
5130 break; |
|
5131 } |
|
5132 } |
|
5133 |
|
5134 /* enable transmits in the hardware, need to do this |
|
5135 * after setting TARC(0) |
|
5136 */ |
|
5137 tctl = er32(TCTL); |
|
5138 tctl |= E1000_TCTL_EN; |
|
5139 ew32(TCTL, tctl); |
|
5140 |
|
5141 /* Perform any post-link-up configuration before |
|
5142 * reporting link up. |
|
5143 */ |
|
5144 if (phy->ops.cfg_on_link_up) |
|
5145 phy->ops.cfg_on_link_up(hw); |
|
5146 |
|
5147 if (adapter->ecdev) |
|
5148 ecdev_set_link(adapter->ecdev, 1); |
|
5149 else |
|
5150 netif_carrier_on(netdev); |
|
5151 |
|
5152 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
5153 mod_timer(&adapter->phy_info_timer, |
|
5154 round_jiffies(jiffies + 2 * HZ)); |
|
5155 } |
|
5156 } else { |
|
5157 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
5158 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
5159 adapter->link_speed = 0; |
|
5160 adapter->link_duplex = 0; |
|
5161 /* Link status message must follow this format */ |
|
5162 pr_info("%s NIC Link is Down\n", adapter->netdev->name); |
|
5163 if (adapter->ecdev) { |
|
5164 ecdev_set_link(adapter->ecdev, 0); |
|
5165 } |
|
5166 else { |
|
5167 netif_carrier_off(netdev); |
|
5168 if (!test_bit(__E1000_DOWN, &adapter->state)) |
|
5169 mod_timer(&adapter->phy_info_timer, |
|
5170 round_jiffies(jiffies + 2 * HZ)); |
|
5171 } |
|
5172 |
|
5173 /* 8000ES2LAN requires a Rx packet buffer work-around |
|
5174 * on link down event; reset the controller to flush |
|
5175 * the Rx packet buffer. |
|
5176 */ |
|
5177 if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
|
5178 adapter->flags |= FLAG_RESTART_NOW; |
|
5179 else |
|
5180 pm_schedule_suspend(netdev->dev.parent, |
|
5181 LINK_TIMEOUT); |
|
5182 } |
|
5183 } |
|
5184 |
|
5185 link_up: |
|
5186 spin_lock(&adapter->stats64_lock); |
|
5187 e1000e_update_stats(adapter); |
|
5188 |
|
5189 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
5190 adapter->tpt_old = adapter->stats.tpt; |
|
5191 mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
5192 adapter->colc_old = adapter->stats.colc; |
|
5193 |
|
5194 adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
|
5195 adapter->gorc_old = adapter->stats.gorc; |
|
5196 adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
|
5197 adapter->gotc_old = adapter->stats.gotc; |
|
5198 spin_unlock(&adapter->stats64_lock); |
|
5199 |
|
5200 /* If the link is lost the controller stops DMA, but |
|
5201 * if there is queued Tx work it cannot be done. So |
|
5202 * reset the controller to flush the Tx packet buffers. |
|
5203 */ |
|
5204 if (!netif_carrier_ok(netdev) && |
|
5205 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) |
|
5206 adapter->flags |= FLAG_RESTART_NOW; |
|
5207 |
|
5208 /* If reset is necessary, do it outside of interrupt context. */ |
|
5209 if (adapter->flags & FLAG_RESTART_NOW) { |
|
5210 schedule_work(&adapter->reset_task); |
|
5211 /* return immediately since reset is imminent */ |
|
5212 return; |
|
5213 } |
|
5214 |
|
5215 e1000e_update_adaptive(&adapter->hw); |
|
5216 |
|
5217 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
5218 if (adapter->itr_setting == 4) { |
|
5219 /* Symmetric Tx/Rx gets a reduced ITR=2000; |
|
5220 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
5221 * everyone else is between 2000-8000. |
|
5222 */ |
|
5223 u32 goc = (adapter->gotc + adapter->gorc) / 10000; |
|
5224 u32 dif = (adapter->gotc > adapter->gorc ? |
|
5225 adapter->gotc - adapter->gorc : |
|
5226 adapter->gorc - adapter->gotc) / 10000; |
|
5227 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
5228 |
|
5229 e1000e_write_itr(adapter, itr); |
|
5230 } |
|
5231 |
|
5232 /* Cause software interrupt to ensure Rx ring is cleaned */ |
|
5233 if (adapter->msix_entries) |
|
5234 ew32(ICS, adapter->rx_ring->ims_val); |
|
5235 else |
|
5236 ew32(ICS, E1000_ICS_RXDMT0); |
|
5237 |
|
5238 /* flush pending descriptors to memory before detecting Tx hang */ |
|
5239 e1000e_flush_descriptors(adapter); |
|
5240 |
|
5241 /* Force detection of hung controller every watchdog period */ |
|
5242 adapter->detect_tx_hung = true; |
|
5243 |
|
5244 /* With 82571 controllers, LAA may be overwritten due to controller |
|
5245 * reset from the other port. Set the appropriate LAA in RAR[0] |
|
5246 */ |
|
5247 if (e1000e_get_laa_state_82571(hw)) |
|
5248 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0); |
|
5249 |
|
5250 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
|
5251 e1000e_check_82574_phy_workaround(adapter); |
|
5252 |
|
5253 /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */ |
|
5254 if (adapter->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) { |
|
5255 if ((adapter->flags2 & FLAG2_CHECK_RX_HWTSTAMP) && |
|
5256 (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) { |
|
5257 er32(RXSTMPH); |
|
5258 adapter->rx_hwtstamp_cleared++; |
|
5259 } else { |
|
5260 adapter->flags2 |= FLAG2_CHECK_RX_HWTSTAMP; |
|
5261 } |
|
5262 } |
|
5263 |
|
5264 /* Reset the timer */ |
|
5265 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->state)) |
|
5266 mod_timer(&adapter->watchdog_timer, |
|
5267 round_jiffies(jiffies + 2 * HZ)); |
|
5268 } |
|
5269 |
|
5270 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
5271 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
5272 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
5273 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
5274 #define E1000_TX_FLAGS_NO_FCS 0x00000010 |
|
5275 #define E1000_TX_FLAGS_HWTSTAMP 0x00000020 |
|
5276 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
5277 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
5278 |
|
5279 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
5280 { |
|
5281 struct e1000_context_desc *context_desc; |
|
5282 struct e1000_buffer *buffer_info; |
|
5283 unsigned int i; |
|
5284 u32 cmd_length = 0; |
|
5285 u16 ipcse = 0, mss; |
|
5286 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
5287 int err; |
|
5288 |
|
5289 if (!skb_is_gso(skb)) |
|
5290 return 0; |
|
5291 |
|
5292 err = skb_cow_head(skb, 0); |
|
5293 if (err < 0) |
|
5294 return err; |
|
5295 |
|
5296 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
5297 mss = skb_shinfo(skb)->gso_size; |
|
5298 if (skb->protocol == htons(ETH_P_IP)) { |
|
5299 struct iphdr *iph = ip_hdr(skb); |
|
5300 iph->tot_len = 0; |
|
5301 iph->check = 0; |
|
5302 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, |
|
5303 0, IPPROTO_TCP, 0); |
|
5304 cmd_length = E1000_TXD_CMD_IP; |
|
5305 ipcse = skb_transport_offset(skb) - 1; |
|
5306 } else if (skb_is_gso_v6(skb)) { |
|
5307 ipv6_hdr(skb)->payload_len = 0; |
|
5308 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
5309 &ipv6_hdr(skb)->daddr, |
|
5310 0, IPPROTO_TCP, 0); |
|
5311 ipcse = 0; |
|
5312 } |
|
5313 ipcss = skb_network_offset(skb); |
|
5314 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
5315 tucss = skb_transport_offset(skb); |
|
5316 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
5317 |
|
5318 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
5319 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
5320 |
|
5321 i = tx_ring->next_to_use; |
|
5322 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
5323 buffer_info = &tx_ring->buffer_info[i]; |
|
5324 |
|
5325 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
5326 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
5327 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
5328 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
5329 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
5330 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
5331 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
5332 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
5333 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
5334 |
|
5335 buffer_info->time_stamp = jiffies; |
|
5336 buffer_info->next_to_watch = i; |
|
5337 |
|
5338 i++; |
|
5339 if (i == tx_ring->count) |
|
5340 i = 0; |
|
5341 tx_ring->next_to_use = i; |
|
5342 |
|
5343 return 1; |
|
5344 } |
|
5345 |
|
5346 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb) |
|
5347 { |
|
5348 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5349 struct e1000_context_desc *context_desc; |
|
5350 struct e1000_buffer *buffer_info; |
|
5351 unsigned int i; |
|
5352 u8 css; |
|
5353 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
5354 __be16 protocol; |
|
5355 |
|
5356 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
5357 return false; |
|
5358 |
|
5359 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
|
5360 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; |
|
5361 else |
|
5362 protocol = skb->protocol; |
|
5363 |
|
5364 switch (protocol) { |
|
5365 case cpu_to_be16(ETH_P_IP): |
|
5366 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
5367 cmd_len |= E1000_TXD_CMD_TCP; |
|
5368 break; |
|
5369 case cpu_to_be16(ETH_P_IPV6): |
|
5370 /* XXX not handling all IPV6 headers */ |
|
5371 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
5372 cmd_len |= E1000_TXD_CMD_TCP; |
|
5373 break; |
|
5374 default: |
|
5375 if (unlikely(net_ratelimit())) |
|
5376 e_warn("checksum_partial proto=%x!\n", |
|
5377 be16_to_cpu(protocol)); |
|
5378 break; |
|
5379 } |
|
5380 |
|
5381 css = skb_checksum_start_offset(skb); |
|
5382 |
|
5383 i = tx_ring->next_to_use; |
|
5384 buffer_info = &tx_ring->buffer_info[i]; |
|
5385 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
5386 |
|
5387 context_desc->lower_setup.ip_config = 0; |
|
5388 context_desc->upper_setup.tcp_fields.tucss = css; |
|
5389 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset; |
|
5390 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
5391 context_desc->tcp_seg_setup.data = 0; |
|
5392 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
5393 |
|
5394 buffer_info->time_stamp = jiffies; |
|
5395 buffer_info->next_to_watch = i; |
|
5396 |
|
5397 i++; |
|
5398 if (i == tx_ring->count) |
|
5399 i = 0; |
|
5400 tx_ring->next_to_use = i; |
|
5401 |
|
5402 return true; |
|
5403 } |
|
5404 |
|
5405 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb, |
|
5406 unsigned int first, unsigned int max_per_txd, |
|
5407 unsigned int nr_frags) |
|
5408 { |
|
5409 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5410 struct pci_dev *pdev = adapter->pdev; |
|
5411 struct e1000_buffer *buffer_info; |
|
5412 unsigned int len = skb_headlen(skb); |
|
5413 unsigned int offset = 0, size, count = 0, i; |
|
5414 unsigned int f, bytecount, segs; |
|
5415 |
|
5416 i = tx_ring->next_to_use; |
|
5417 |
|
5418 while (len) { |
|
5419 buffer_info = &tx_ring->buffer_info[i]; |
|
5420 size = min(len, max_per_txd); |
|
5421 |
|
5422 buffer_info->length = size; |
|
5423 buffer_info->time_stamp = jiffies; |
|
5424 buffer_info->next_to_watch = i; |
|
5425 buffer_info->dma = dma_map_single(&pdev->dev, |
|
5426 skb->data + offset, |
|
5427 size, DMA_TO_DEVICE); |
|
5428 buffer_info->mapped_as_page = false; |
|
5429 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
5430 goto dma_error; |
|
5431 |
|
5432 len -= size; |
|
5433 offset += size; |
|
5434 count++; |
|
5435 |
|
5436 if (len) { |
|
5437 i++; |
|
5438 if (i == tx_ring->count) |
|
5439 i = 0; |
|
5440 } |
|
5441 } |
|
5442 |
|
5443 for (f = 0; f < nr_frags; f++) { |
|
5444 const struct skb_frag_struct *frag; |
|
5445 |
|
5446 frag = &skb_shinfo(skb)->frags[f]; |
|
5447 len = skb_frag_size(frag); |
|
5448 offset = 0; |
|
5449 |
|
5450 while (len) { |
|
5451 i++; |
|
5452 if (i == tx_ring->count) |
|
5453 i = 0; |
|
5454 |
|
5455 buffer_info = &tx_ring->buffer_info[i]; |
|
5456 size = min(len, max_per_txd); |
|
5457 |
|
5458 buffer_info->length = size; |
|
5459 buffer_info->time_stamp = jiffies; |
|
5460 buffer_info->next_to_watch = i; |
|
5461 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
|
5462 offset, size, |
|
5463 DMA_TO_DEVICE); |
|
5464 buffer_info->mapped_as_page = true; |
|
5465 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
5466 goto dma_error; |
|
5467 |
|
5468 len -= size; |
|
5469 offset += size; |
|
5470 count++; |
|
5471 } |
|
5472 } |
|
5473 |
|
5474 segs = skb_shinfo(skb)->gso_segs ? : 1; |
|
5475 /* multiply data chunks by size of headers */ |
|
5476 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; |
|
5477 |
|
5478 tx_ring->buffer_info[i].skb = skb; |
|
5479 tx_ring->buffer_info[i].segs = segs; |
|
5480 tx_ring->buffer_info[i].bytecount = bytecount; |
|
5481 tx_ring->buffer_info[first].next_to_watch = i; |
|
5482 |
|
5483 return count; |
|
5484 |
|
5485 dma_error: |
|
5486 dev_err(&pdev->dev, "Tx DMA map failed\n"); |
|
5487 buffer_info->dma = 0; |
|
5488 if (count) |
|
5489 count--; |
|
5490 |
|
5491 while (count--) { |
|
5492 if (i == 0) |
|
5493 i += tx_ring->count; |
|
5494 i--; |
|
5495 buffer_info = &tx_ring->buffer_info[i]; |
|
5496 e1000_put_txbuf(tx_ring, buffer_info); |
|
5497 } |
|
5498 |
|
5499 return 0; |
|
5500 } |
|
5501 |
|
5502 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count) |
|
5503 { |
|
5504 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5505 struct e1000_tx_desc *tx_desc = NULL; |
|
5506 struct e1000_buffer *buffer_info; |
|
5507 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
5508 unsigned int i; |
|
5509 |
|
5510 if (tx_flags & E1000_TX_FLAGS_TSO) { |
|
5511 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
5512 E1000_TXD_CMD_TSE; |
|
5513 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
5514 |
|
5515 if (tx_flags & E1000_TX_FLAGS_IPV4) |
|
5516 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
5517 } |
|
5518 |
|
5519 if (tx_flags & E1000_TX_FLAGS_CSUM) { |
|
5520 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
5521 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
5522 } |
|
5523 |
|
5524 if (tx_flags & E1000_TX_FLAGS_VLAN) { |
|
5525 txd_lower |= E1000_TXD_CMD_VLE; |
|
5526 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
5527 } |
|
5528 |
|
5529 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
5530 txd_lower &= ~(E1000_TXD_CMD_IFCS); |
|
5531 |
|
5532 if (unlikely(tx_flags & E1000_TX_FLAGS_HWTSTAMP)) { |
|
5533 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
5534 txd_upper |= E1000_TXD_EXTCMD_TSTAMP; |
|
5535 } |
|
5536 |
|
5537 i = tx_ring->next_to_use; |
|
5538 |
|
5539 do { |
|
5540 buffer_info = &tx_ring->buffer_info[i]; |
|
5541 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
5542 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
5543 tx_desc->lower.data = cpu_to_le32(txd_lower | |
|
5544 buffer_info->length); |
|
5545 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
5546 |
|
5547 i++; |
|
5548 if (i == tx_ring->count) |
|
5549 i = 0; |
|
5550 } while (--count > 0); |
|
5551 |
|
5552 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
5553 |
|
5554 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ |
|
5555 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
|
5556 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); |
|
5557 |
|
5558 /* Force memory writes to complete before letting h/w |
|
5559 * know there are new descriptors to fetch. (Only |
|
5560 * applicable for weak-ordered memory model archs, |
|
5561 * such as IA-64). |
|
5562 */ |
|
5563 wmb(); |
|
5564 |
|
5565 tx_ring->next_to_use = i; |
|
5566 |
|
5567 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
|
5568 e1000e_update_tdt_wa(tx_ring, i); |
|
5569 else |
|
5570 writel(i, tx_ring->tail); |
|
5571 |
|
5572 /* we need this if more than one processor can write to our tail |
|
5573 * at a time, it synchronizes IO on IA64/Altix systems |
|
5574 */ |
|
5575 mmiowb(); |
|
5576 } |
|
5577 |
|
5578 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
5579 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
5580 struct sk_buff *skb) |
|
5581 { |
|
5582 struct e1000_hw *hw = &adapter->hw; |
|
5583 u16 length, offset; |
|
5584 |
|
5585 if (vlan_tx_tag_present(skb) && |
|
5586 !((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
5587 (adapter->hw.mng_cookie.status & |
|
5588 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
|
5589 return 0; |
|
5590 |
|
5591 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) |
|
5592 return 0; |
|
5593 |
|
5594 if (((struct ethhdr *)skb->data)->h_proto != htons(ETH_P_IP)) |
|
5595 return 0; |
|
5596 |
|
5597 { |
|
5598 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data + 14); |
|
5599 struct udphdr *udp; |
|
5600 |
|
5601 if (ip->protocol != IPPROTO_UDP) |
|
5602 return 0; |
|
5603 |
|
5604 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
|
5605 if (ntohs(udp->dest) != 67) |
|
5606 return 0; |
|
5607 |
|
5608 offset = (u8 *)udp + 8 - skb->data; |
|
5609 length = skb->len - offset; |
|
5610 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); |
|
5611 } |
|
5612 |
|
5613 return 0; |
|
5614 } |
|
5615 |
|
5616 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5617 { |
|
5618 struct e1000_adapter *adapter = tx_ring->adapter; |
|
5619 |
|
5620 netif_stop_queue(adapter->netdev); |
|
5621 /* Herbert's original patch had: |
|
5622 * smp_mb__after_netif_stop_queue(); |
|
5623 * but since that doesn't exist yet, just open code it. |
|
5624 */ |
|
5625 smp_mb(); |
|
5626 |
|
5627 /* We need to check again in a case another CPU has just |
|
5628 * made room available. |
|
5629 */ |
|
5630 if (e1000_desc_unused(tx_ring) < size) |
|
5631 return -EBUSY; |
|
5632 |
|
5633 /* A reprieve! */ |
|
5634 netif_start_queue(adapter->netdev); |
|
5635 ++adapter->restart_queue; |
|
5636 return 0; |
|
5637 } |
|
5638 |
|
5639 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
|
5640 { |
|
5641 BUG_ON(size > tx_ring->count); |
|
5642 |
|
5643 if (e1000_desc_unused(tx_ring) >= size) |
|
5644 return 0; |
|
5645 return __e1000_maybe_stop_tx(tx_ring, size); |
|
5646 } |
|
5647 |
|
5648 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
5649 struct net_device *netdev) |
|
5650 { |
|
5651 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5652 struct e1000_ring *tx_ring = adapter->tx_ring; |
|
5653 unsigned int first; |
|
5654 unsigned int tx_flags = 0; |
|
5655 unsigned int len = skb_headlen(skb); |
|
5656 unsigned int nr_frags; |
|
5657 unsigned int mss; |
|
5658 int count = 0; |
|
5659 int tso; |
|
5660 unsigned int f; |
|
5661 |
|
5662 if (test_bit(__E1000_DOWN, &adapter->state)) { |
|
5663 if (!adapter->ecdev) |
|
5664 dev_kfree_skb_any(skb); |
|
5665 return NETDEV_TX_OK; |
|
5666 } |
|
5667 |
|
5668 if (skb->len <= 0) { |
|
5669 if (!adapter->ecdev) |
|
5670 dev_kfree_skb_any(skb); |
|
5671 return NETDEV_TX_OK; |
|
5672 } |
|
5673 |
|
5674 /* The minimum packet size with TCTL.PSP set is 17 bytes so |
|
5675 * pad skb in order to meet this minimum size requirement |
|
5676 */ |
|
5677 if (unlikely(skb->len < 17)) { |
|
5678 if (skb_pad(skb, 17 - skb->len)) |
|
5679 return NETDEV_TX_OK; |
|
5680 skb->len = 17; |
|
5681 skb_set_tail_pointer(skb, 17); |
|
5682 } |
|
5683 |
|
5684 mss = skb_shinfo(skb)->gso_size; |
|
5685 if (mss) { |
|
5686 u8 hdr_len; |
|
5687 |
|
5688 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
5689 * points to just header, pull a few bytes of payload from |
|
5690 * frags into skb->data |
|
5691 */ |
|
5692 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
5693 /* we do this workaround for ES2LAN, but it is un-necessary, |
|
5694 * avoiding it could save a lot of cycles |
|
5695 */ |
|
5696 if (skb->data_len && (hdr_len == len)) { |
|
5697 unsigned int pull_size; |
|
5698 |
|
5699 pull_size = min_t(unsigned int, 4, skb->data_len); |
|
5700 if (!__pskb_pull_tail(skb, pull_size)) { |
|
5701 e_err("__pskb_pull_tail failed.\n"); |
|
5702 if (!adapter->ecdev) |
|
5703 dev_kfree_skb_any(skb); |
|
5704 return NETDEV_TX_OK; |
|
5705 } |
|
5706 len = skb_headlen(skb); |
|
5707 } |
|
5708 } |
|
5709 |
|
5710 /* reserve a descriptor for the offload context */ |
|
5711 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
5712 count++; |
|
5713 count++; |
|
5714 |
|
5715 count += DIV_ROUND_UP(len, adapter->tx_fifo_limit); |
|
5716 |
|
5717 nr_frags = skb_shinfo(skb)->nr_frags; |
|
5718 for (f = 0; f < nr_frags; f++) |
|
5719 count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
|
5720 adapter->tx_fifo_limit); |
|
5721 |
|
5722 if (adapter->hw.mac.tx_pkt_filtering) |
|
5723 e1000_transfer_dhcp_info(adapter, skb); |
|
5724 |
|
5725 /* need: count + 2 desc gap to keep tail from touching |
|
5726 * head, otherwise try next time |
|
5727 */ |
|
5728 if (!adapter->ecdev && e1000_maybe_stop_tx(tx_ring, count + 2)) |
|
5729 return NETDEV_TX_BUSY; |
|
5730 |
|
5731 if (vlan_tx_tag_present(skb)) { |
|
5732 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
5733 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
5734 } |
|
5735 |
|
5736 first = tx_ring->next_to_use; |
|
5737 |
|
5738 tso = e1000_tso(tx_ring, skb); |
|
5739 if (tso < 0) { |
|
5740 if (!adapter->ecdev) |
|
5741 dev_kfree_skb_any(skb); |
|
5742 return NETDEV_TX_OK; |
|
5743 } |
|
5744 |
|
5745 if (tso) |
|
5746 tx_flags |= E1000_TX_FLAGS_TSO; |
|
5747 else if (e1000_tx_csum(tx_ring, skb)) |
|
5748 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
5749 |
|
5750 /* Old method was to assume IPv4 packet by default if TSO was enabled. |
|
5751 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
5752 * no longer assume, we must. |
|
5753 */ |
|
5754 if (skb->protocol == htons(ETH_P_IP)) |
|
5755 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
5756 |
|
5757 if (unlikely(skb->no_fcs)) |
|
5758 tx_flags |= E1000_TX_FLAGS_NO_FCS; |
|
5759 |
|
5760 /* if count is 0 then mapping error has occurred */ |
|
5761 count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit, |
|
5762 nr_frags); |
|
5763 if (count) { |
|
5764 if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && |
|
5765 !adapter->tx_hwtstamp_skb)) { |
|
5766 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
|
5767 tx_flags |= E1000_TX_FLAGS_HWTSTAMP; |
|
5768 adapter->tx_hwtstamp_skb = skb_get(skb); |
|
5769 adapter->tx_hwtstamp_start = jiffies; |
|
5770 schedule_work(&adapter->tx_hwtstamp_work); |
|
5771 } else { |
|
5772 skb_tx_timestamp(skb); |
|
5773 } |
|
5774 |
|
5775 netdev_sent_queue(netdev, skb->len); |
|
5776 e1000_tx_queue(tx_ring, tx_flags, count); |
|
5777 /* Make sure there is space in the ring for the next send. */ |
|
5778 if (!adapter->ecdev) { |
|
5779 e1000_maybe_stop_tx(tx_ring, |
|
5780 (MAX_SKB_FRAGS * |
|
5781 DIV_ROUND_UP(PAGE_SIZE, |
|
5782 adapter->tx_fifo_limit) + 2)); |
|
5783 } |
|
5784 } else { |
|
5785 if (!adapter->ecdev) { |
|
5786 dev_kfree_skb_any(skb); |
|
5787 } |
|
5788 tx_ring->buffer_info[first].time_stamp = 0; |
|
5789 tx_ring->next_to_use = first; |
|
5790 } |
|
5791 |
|
5792 return NETDEV_TX_OK; |
|
5793 } |
|
5794 |
|
5795 /** |
|
5796 * e1000_tx_timeout - Respond to a Tx Hang |
|
5797 * @netdev: network interface device structure |
|
5798 **/ |
|
5799 static void e1000_tx_timeout(struct net_device *netdev) |
|
5800 { |
|
5801 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5802 |
|
5803 /* Do the reset outside of interrupt context */ |
|
5804 adapter->tx_timeout_count++; |
|
5805 schedule_work(&adapter->reset_task); |
|
5806 } |
|
5807 |
|
5808 static void e1000_reset_task(struct work_struct *work) |
|
5809 { |
|
5810 struct e1000_adapter *adapter; |
|
5811 adapter = container_of(work, struct e1000_adapter, reset_task); |
|
5812 |
|
5813 /* don't run the task if already down */ |
|
5814 if (test_bit(__E1000_DOWN, &adapter->state)) |
|
5815 return; |
|
5816 |
|
5817 if (!(adapter->flags & FLAG_RESTART_NOW)) { |
|
5818 e1000e_dump(adapter); |
|
5819 e_err("Reset adapter unexpectedly\n"); |
|
5820 } |
|
5821 e1000e_reinit_locked(adapter); |
|
5822 } |
|
5823 |
|
5824 /** |
|
5825 * e1000_get_stats64 - Get System Network Statistics |
|
5826 * @netdev: network interface device structure |
|
5827 * @stats: rtnl_link_stats64 pointer |
|
5828 * |
|
5829 * Returns the address of the device statistics structure. |
|
5830 **/ |
|
5831 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
|
5832 struct rtnl_link_stats64 *stats) |
|
5833 { |
|
5834 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5835 |
|
5836 memset(stats, 0, sizeof(struct rtnl_link_stats64)); |
|
5837 spin_lock(&adapter->stats64_lock); |
|
5838 e1000e_update_stats(adapter); |
|
5839 /* Fill out the OS statistics structure */ |
|
5840 stats->rx_bytes = adapter->stats.gorc; |
|
5841 stats->rx_packets = adapter->stats.gprc; |
|
5842 stats->tx_bytes = adapter->stats.gotc; |
|
5843 stats->tx_packets = adapter->stats.gptc; |
|
5844 stats->multicast = adapter->stats.mprc; |
|
5845 stats->collisions = adapter->stats.colc; |
|
5846 |
|
5847 /* Rx Errors */ |
|
5848 |
|
5849 /* RLEC on some newer hardware can be incorrect so build |
|
5850 * our own version based on RUC and ROC |
|
5851 */ |
|
5852 stats->rx_errors = adapter->stats.rxerrc + |
|
5853 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
5854 adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; |
|
5855 stats->rx_length_errors = adapter->stats.ruc + adapter->stats.roc; |
|
5856 stats->rx_crc_errors = adapter->stats.crcerrs; |
|
5857 stats->rx_frame_errors = adapter->stats.algnerrc; |
|
5858 stats->rx_missed_errors = adapter->stats.mpc; |
|
5859 |
|
5860 /* Tx Errors */ |
|
5861 stats->tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
|
5862 stats->tx_aborted_errors = adapter->stats.ecol; |
|
5863 stats->tx_window_errors = adapter->stats.latecol; |
|
5864 stats->tx_carrier_errors = adapter->stats.tncrs; |
|
5865 |
|
5866 /* Tx Dropped needs to be maintained elsewhere */ |
|
5867 |
|
5868 spin_unlock(&adapter->stats64_lock); |
|
5869 return stats; |
|
5870 } |
|
5871 |
|
5872 /** |
|
5873 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
5874 * @netdev: network interface device structure |
|
5875 * @new_mtu: new value for maximum frame size |
|
5876 * |
|
5877 * Returns 0 on success, negative on failure |
|
5878 **/ |
|
5879 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
5880 { |
|
5881 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5882 int max_frame = new_mtu + VLAN_HLEN + ETH_HLEN + ETH_FCS_LEN; |
|
5883 |
|
5884 if (adapter->ecdev) |
|
5885 return -EBUSY; |
|
5886 |
|
5887 /* Jumbo frame support */ |
|
5888 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
|
5889 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { |
|
5890 e_err("Jumbo Frames not supported.\n"); |
|
5891 return -EINVAL; |
|
5892 } |
|
5893 |
|
5894 /* Supported frame sizes */ |
|
5895 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
|
5896 (max_frame > adapter->max_hw_frame_size)) { |
|
5897 e_err("Unsupported MTU setting\n"); |
|
5898 return -EINVAL; |
|
5899 } |
|
5900 |
|
5901 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */ |
|
5902 if ((adapter->hw.mac.type >= e1000_pch2lan) && |
|
5903 !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
|
5904 (new_mtu > ETH_DATA_LEN)) { |
|
5905 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n"); |
|
5906 return -EINVAL; |
|
5907 } |
|
5908 |
|
5909 while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
|
5910 usleep_range(1000, 2000); |
|
5911 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
|
5912 adapter->max_frame_size = max_frame; |
|
5913 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
|
5914 netdev->mtu = new_mtu; |
|
5915 |
|
5916 pm_runtime_get_sync(netdev->dev.parent); |
|
5917 |
|
5918 if (netif_running(netdev)) |
|
5919 e1000e_down(adapter, true); |
|
5920 |
|
5921 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
5922 * means we reserve 2 more, this pushes us to allocate from the next |
|
5923 * larger slab size. |
|
5924 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
5925 * However with the new *_jumbo_rx* routines, jumbo receives will use |
|
5926 * fragmented skbs |
|
5927 */ |
|
5928 |
|
5929 if (max_frame <= 2048) |
|
5930 adapter->rx_buffer_len = 2048; |
|
5931 else |
|
5932 adapter->rx_buffer_len = 4096; |
|
5933 |
|
5934 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
5935 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
|
5936 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
|
5937 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
|
5938 + ETH_FCS_LEN; |
|
5939 |
|
5940 if (netif_running(netdev)) |
|
5941 e1000e_up(adapter); |
|
5942 else |
|
5943 e1000e_reset(adapter); |
|
5944 |
|
5945 pm_runtime_put_sync(netdev->dev.parent); |
|
5946 |
|
5947 clear_bit(__E1000_RESETTING, &adapter->state); |
|
5948 |
|
5949 return 0; |
|
5950 } |
|
5951 |
|
5952 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
5953 int cmd) |
|
5954 { |
|
5955 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5956 struct mii_ioctl_data *data = if_mii(ifr); |
|
5957 |
|
5958 if (adapter->hw.phy.media_type != e1000_media_type_copper) |
|
5959 return -EOPNOTSUPP; |
|
5960 |
|
5961 switch (cmd) { |
|
5962 case SIOCGMIIPHY: |
|
5963 data->phy_id = adapter->hw.phy.addr; |
|
5964 break; |
|
5965 case SIOCGMIIREG: |
|
5966 e1000_phy_read_status(adapter); |
|
5967 |
|
5968 switch (data->reg_num & 0x1F) { |
|
5969 case MII_BMCR: |
|
5970 data->val_out = adapter->phy_regs.bmcr; |
|
5971 break; |
|
5972 case MII_BMSR: |
|
5973 data->val_out = adapter->phy_regs.bmsr; |
|
5974 break; |
|
5975 case MII_PHYSID1: |
|
5976 data->val_out = (adapter->hw.phy.id >> 16); |
|
5977 break; |
|
5978 case MII_PHYSID2: |
|
5979 data->val_out = (adapter->hw.phy.id & 0xFFFF); |
|
5980 break; |
|
5981 case MII_ADVERTISE: |
|
5982 data->val_out = adapter->phy_regs.advertise; |
|
5983 break; |
|
5984 case MII_LPA: |
|
5985 data->val_out = adapter->phy_regs.lpa; |
|
5986 break; |
|
5987 case MII_EXPANSION: |
|
5988 data->val_out = adapter->phy_regs.expansion; |
|
5989 break; |
|
5990 case MII_CTRL1000: |
|
5991 data->val_out = adapter->phy_regs.ctrl1000; |
|
5992 break; |
|
5993 case MII_STAT1000: |
|
5994 data->val_out = adapter->phy_regs.stat1000; |
|
5995 break; |
|
5996 case MII_ESTATUS: |
|
5997 data->val_out = adapter->phy_regs.estatus; |
|
5998 break; |
|
5999 default: |
|
6000 return -EIO; |
|
6001 } |
|
6002 break; |
|
6003 case SIOCSMIIREG: |
|
6004 default: |
|
6005 return -EOPNOTSUPP; |
|
6006 } |
|
6007 return 0; |
|
6008 } |
|
6009 |
|
6010 /** |
|
6011 * e1000e_hwtstamp_ioctl - control hardware time stamping |
|
6012 * @netdev: network interface device structure |
|
6013 * @ifreq: interface request |
|
6014 * |
|
6015 * Outgoing time stamping can be enabled and disabled. Play nice and |
|
6016 * disable it when requested, although it shouldn't cause any overhead |
|
6017 * when no packet needs it. At most one packet in the queue may be |
|
6018 * marked for time stamping, otherwise it would be impossible to tell |
|
6019 * for sure to which packet the hardware time stamp belongs. |
|
6020 * |
|
6021 * Incoming time stamping has to be configured via the hardware filters. |
|
6022 * Not all combinations are supported, in particular event type has to be |
|
6023 * specified. Matching the kind of event packet is not supported, with the |
|
6024 * exception of "all V2 events regardless of level 2 or 4". |
|
6025 **/ |
|
6026 static int e1000e_hwtstamp_set(struct net_device *netdev, struct ifreq *ifr) |
|
6027 { |
|
6028 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6029 struct hwtstamp_config config; |
|
6030 int ret_val; |
|
6031 |
|
6032 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) |
|
6033 return -EFAULT; |
|
6034 |
|
6035 ret_val = e1000e_config_hwtstamp(adapter, &config); |
|
6036 if (ret_val) |
|
6037 return ret_val; |
|
6038 |
|
6039 switch (config.rx_filter) { |
|
6040 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
|
6041 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
|
6042 case HWTSTAMP_FILTER_PTP_V2_SYNC: |
|
6043 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
|
6044 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
|
6045 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
|
6046 /* With V2 type filters which specify a Sync or Delay Request, |
|
6047 * Path Delay Request/Response messages are also time stamped |
|
6048 * by hardware so notify the caller the requested packets plus |
|
6049 * some others are time stamped. |
|
6050 */ |
|
6051 config.rx_filter = HWTSTAMP_FILTER_SOME; |
|
6052 break; |
|
6053 default: |
|
6054 break; |
|
6055 } |
|
6056 |
|
6057 return copy_to_user(ifr->ifr_data, &config, |
|
6058 sizeof(config)) ? -EFAULT : 0; |
|
6059 } |
|
6060 |
|
6061 static int e1000e_hwtstamp_get(struct net_device *netdev, struct ifreq *ifr) |
|
6062 { |
|
6063 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6064 |
|
6065 return copy_to_user(ifr->ifr_data, &adapter->hwtstamp_config, |
|
6066 sizeof(adapter->hwtstamp_config)) ? -EFAULT : 0; |
|
6067 } |
|
6068 |
|
6069 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
6070 { |
|
6071 switch (cmd) { |
|
6072 case SIOCGMIIPHY: |
|
6073 case SIOCGMIIREG: |
|
6074 case SIOCSMIIREG: |
|
6075 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
6076 case SIOCSHWTSTAMP: |
|
6077 return e1000e_hwtstamp_set(netdev, ifr); |
|
6078 case SIOCGHWTSTAMP: |
|
6079 return e1000e_hwtstamp_get(netdev, ifr); |
|
6080 default: |
|
6081 return -EOPNOTSUPP; |
|
6082 } |
|
6083 } |
|
6084 |
|
6085 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
|
6086 { |
|
6087 struct e1000_hw *hw = &adapter->hw; |
|
6088 u32 i, mac_reg, wuc; |
|
6089 u16 phy_reg, wuc_enable; |
|
6090 int retval; |
|
6091 |
|
6092 /* copy MAC RARs to PHY RARs */ |
|
6093 e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
|
6094 |
|
6095 retval = hw->phy.ops.acquire(hw); |
|
6096 if (retval) { |
|
6097 e_err("Could not acquire PHY\n"); |
|
6098 return retval; |
|
6099 } |
|
6100 |
|
6101 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ |
|
6102 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
6103 if (retval) |
|
6104 goto release; |
|
6105 |
|
6106 /* copy MAC MTA to PHY MTA - only needed for pchlan */ |
|
6107 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
|
6108 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); |
|
6109 hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
|
6110 (u16)(mac_reg & 0xFFFF)); |
|
6111 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, |
|
6112 (u16)((mac_reg >> 16) & 0xFFFF)); |
|
6113 } |
|
6114 |
|
6115 /* configure PHY Rx Control register */ |
|
6116 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
|
6117 mac_reg = er32(RCTL); |
|
6118 if (mac_reg & E1000_RCTL_UPE) |
|
6119 phy_reg |= BM_RCTL_UPE; |
|
6120 if (mac_reg & E1000_RCTL_MPE) |
|
6121 phy_reg |= BM_RCTL_MPE; |
|
6122 phy_reg &= ~(BM_RCTL_MO_MASK); |
|
6123 if (mac_reg & E1000_RCTL_MO_3) |
|
6124 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) |
|
6125 << BM_RCTL_MO_SHIFT); |
|
6126 if (mac_reg & E1000_RCTL_BAM) |
|
6127 phy_reg |= BM_RCTL_BAM; |
|
6128 if (mac_reg & E1000_RCTL_PMCF) |
|
6129 phy_reg |= BM_RCTL_PMCF; |
|
6130 mac_reg = er32(CTRL); |
|
6131 if (mac_reg & E1000_CTRL_RFCE) |
|
6132 phy_reg |= BM_RCTL_RFCE; |
|
6133 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
|
6134 |
|
6135 wuc = E1000_WUC_PME_EN; |
|
6136 if (wufc & (E1000_WUFC_MAG | E1000_WUFC_LNKC)) |
|
6137 wuc |= E1000_WUC_APME; |
|
6138 |
|
6139 /* enable PHY wakeup in MAC register */ |
|
6140 ew32(WUFC, wufc); |
|
6141 ew32(WUC, (E1000_WUC_PHY_WAKE | E1000_WUC_APMPME | |
|
6142 E1000_WUC_PME_STATUS | wuc)); |
|
6143 |
|
6144 /* configure and enable PHY wakeup in PHY registers */ |
|
6145 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
|
6146 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, wuc); |
|
6147 |
|
6148 /* activate PHY wakeup */ |
|
6149 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
|
6150 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); |
|
6151 if (retval) |
|
6152 e_err("Could not set PHY Host Wakeup bit\n"); |
|
6153 release: |
|
6154 hw->phy.ops.release(hw); |
|
6155 |
|
6156 return retval; |
|
6157 } |
|
6158 |
|
6159 static int e1000e_pm_freeze(struct device *dev) |
|
6160 { |
|
6161 struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); |
|
6162 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6163 |
|
6164 netif_device_detach(netdev); |
|
6165 |
|
6166 if (netif_running(netdev)) { |
|
6167 int count = E1000_CHECK_RESET_COUNT; |
|
6168 |
|
6169 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
6170 usleep_range(10000, 20000); |
|
6171 |
|
6172 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
6173 |
|
6174 /* Quiesce the device without resetting the hardware */ |
|
6175 e1000e_down(adapter, false); |
|
6176 e1000_free_irq(adapter); |
|
6177 } |
|
6178 e1000e_reset_interrupt_capability(adapter); |
|
6179 |
|
6180 /* Allow time for pending master requests to run */ |
|
6181 e1000e_disable_pcie_master(&adapter->hw); |
|
6182 |
|
6183 return 0; |
|
6184 } |
|
6185 |
|
6186 static int __e1000_shutdown(struct pci_dev *pdev, bool runtime) |
|
6187 { |
|
6188 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6189 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6190 struct e1000_hw *hw = &adapter->hw; |
|
6191 u32 ctrl, ctrl_ext, rctl, status; |
|
6192 /* Runtime suspend should only enable wakeup for link changes */ |
|
6193 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
|
6194 int retval = 0; |
|
6195 |
|
6196 status = er32(STATUS); |
|
6197 if (status & E1000_STATUS_LU) |
|
6198 wufc &= ~E1000_WUFC_LNKC; |
|
6199 |
|
6200 if (wufc) { |
|
6201 e1000_setup_rctl(adapter); |
|
6202 e1000e_set_rx_mode(netdev); |
|
6203 |
|
6204 /* turn on all-multi mode if wake on multicast is enabled */ |
|
6205 if (wufc & E1000_WUFC_MC) { |
|
6206 rctl = er32(RCTL); |
|
6207 rctl |= E1000_RCTL_MPE; |
|
6208 ew32(RCTL, rctl); |
|
6209 } |
|
6210 |
|
6211 ctrl = er32(CTRL); |
|
6212 ctrl |= E1000_CTRL_ADVD3WUC; |
|
6213 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) |
|
6214 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; |
|
6215 ew32(CTRL, ctrl); |
|
6216 |
|
6217 if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
|
6218 adapter->hw.phy.media_type == |
|
6219 e1000_media_type_internal_serdes) { |
|
6220 /* keep the laser running in D3 */ |
|
6221 ctrl_ext = er32(CTRL_EXT); |
|
6222 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
|
6223 ew32(CTRL_EXT, ctrl_ext); |
|
6224 } |
|
6225 |
|
6226 if (!runtime) |
|
6227 e1000e_power_up_phy(adapter); |
|
6228 |
|
6229 if (adapter->flags & FLAG_IS_ICH) |
|
6230 e1000_suspend_workarounds_ich8lan(&adapter->hw); |
|
6231 |
|
6232 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
6233 /* enable wakeup by the PHY */ |
|
6234 retval = e1000_init_phy_wakeup(adapter, wufc); |
|
6235 if (retval) |
|
6236 return retval; |
|
6237 } else { |
|
6238 /* enable wakeup by the MAC */ |
|
6239 ew32(WUFC, wufc); |
|
6240 ew32(WUC, E1000_WUC_PME_EN); |
|
6241 } |
|
6242 } else { |
|
6243 ew32(WUC, 0); |
|
6244 ew32(WUFC, 0); |
|
6245 |
|
6246 e1000_power_down_phy(adapter); |
|
6247 } |
|
6248 |
|
6249 if (adapter->hw.phy.type == e1000_phy_igp_3) { |
|
6250 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
|
6251 } else if (hw->mac.type == e1000_pch_lpt) { |
|
6252 if (!(wufc & (E1000_WUFC_EX | E1000_WUFC_MC | E1000_WUFC_BC))) |
|
6253 /* ULP does not support wake from unicast, multicast |
|
6254 * or broadcast. |
|
6255 */ |
|
6256 retval = e1000_enable_ulp_lpt_lp(hw, !runtime); |
|
6257 |
|
6258 if (retval) |
|
6259 return retval; |
|
6260 } |
|
6261 |
|
6262 |
|
6263 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
6264 * would have already happened in close and is redundant. |
|
6265 */ |
|
6266 e1000e_release_hw_control(adapter); |
|
6267 |
|
6268 pci_clear_master(pdev); |
|
6269 |
|
6270 /* The pci-e switch on some quad port adapters will report a |
|
6271 * correctable error when the MAC transitions from D0 to D3. To |
|
6272 * prevent this we need to mask off the correctable errors on the |
|
6273 * downstream port of the pci-e switch. |
|
6274 * |
|
6275 * We don't have the associated upstream bridge while assigning |
|
6276 * the PCI device into guest. For example, the KVM on power is |
|
6277 * one of the cases. |
|
6278 */ |
|
6279 if (adapter->flags & FLAG_IS_QUAD_PORT) { |
|
6280 struct pci_dev *us_dev = pdev->bus->self; |
|
6281 u16 devctl; |
|
6282 |
|
6283 if (!us_dev) |
|
6284 return 0; |
|
6285 |
|
6286 pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl); |
|
6287 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, |
|
6288 (devctl & ~PCI_EXP_DEVCTL_CERE)); |
|
6289 |
|
6290 pci_save_state(pdev); |
|
6291 pci_prepare_to_sleep(pdev); |
|
6292 |
|
6293 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl); |
|
6294 } |
|
6295 |
|
6296 return 0; |
|
6297 } |
|
6298 |
|
6299 /** |
|
6300 * e1000e_disable_aspm - Disable ASPM states |
|
6301 * @pdev: pointer to PCI device struct |
|
6302 * @state: bit-mask of ASPM states to disable |
|
6303 * |
|
6304 * Some devices *must* have certain ASPM states disabled per hardware errata. |
|
6305 **/ |
|
6306 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) |
|
6307 { |
|
6308 struct pci_dev *parent = pdev->bus->self; |
|
6309 u16 aspm_dis_mask = 0; |
|
6310 u16 pdev_aspmc, parent_aspmc; |
|
6311 |
|
6312 switch (state) { |
|
6313 case PCIE_LINK_STATE_L0S: |
|
6314 case PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1: |
|
6315 aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L0S; |
|
6316 /* fall-through - can't have L1 without L0s */ |
|
6317 case PCIE_LINK_STATE_L1: |
|
6318 aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L1; |
|
6319 break; |
|
6320 default: |
|
6321 return; |
|
6322 } |
|
6323 |
|
6324 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); |
|
6325 pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; |
|
6326 |
|
6327 if (parent) { |
|
6328 pcie_capability_read_word(parent, PCI_EXP_LNKCTL, |
|
6329 &parent_aspmc); |
|
6330 parent_aspmc &= PCI_EXP_LNKCTL_ASPMC; |
|
6331 } |
|
6332 |
|
6333 /* Nothing to do if the ASPM states to be disabled already are */ |
|
6334 if (!(pdev_aspmc & aspm_dis_mask) && |
|
6335 (!parent || !(parent_aspmc & aspm_dis_mask))) |
|
6336 return; |
|
6337 |
|
6338 dev_info(&pdev->dev, "Disabling ASPM %s %s\n", |
|
6339 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L0S) ? |
|
6340 "L0s" : "", |
|
6341 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L1) ? |
|
6342 "L1" : ""); |
|
6343 |
|
6344 #ifdef CONFIG_PCIEASPM |
|
6345 pci_disable_link_state_locked(pdev, state); |
|
6346 |
|
6347 /* Double-check ASPM control. If not disabled by the above, the |
|
6348 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is |
|
6349 * not enabled); override by writing PCI config space directly. |
|
6350 */ |
|
6351 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); |
|
6352 pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; |
|
6353 |
|
6354 if (!(aspm_dis_mask & pdev_aspmc)) |
|
6355 return; |
|
6356 #endif |
|
6357 |
|
6358 /* Both device and parent should have the same ASPM setting. |
|
6359 * Disable ASPM in downstream component first and then upstream. |
|
6360 */ |
|
6361 pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, aspm_dis_mask); |
|
6362 |
|
6363 if (parent) |
|
6364 pcie_capability_clear_word(parent, PCI_EXP_LNKCTL, |
|
6365 aspm_dis_mask); |
|
6366 } |
|
6367 |
|
6368 #ifdef CONFIG_PM |
|
6369 static int __e1000_resume(struct pci_dev *pdev) |
|
6370 { |
|
6371 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6372 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6373 struct e1000_hw *hw = &adapter->hw; |
|
6374 u16 aspm_disable_flag = 0; |
|
6375 |
|
6376 if (adapter->ecdev) |
|
6377 return -EBUSY; |
|
6378 |
|
6379 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6380 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6381 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6382 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6383 if (aspm_disable_flag) |
|
6384 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6385 |
|
6386 pci_set_master(pdev); |
|
6387 |
|
6388 if (hw->mac.type >= e1000_pch2lan) |
|
6389 e1000_resume_workarounds_pchlan(&adapter->hw); |
|
6390 |
|
6391 e1000e_power_up_phy(adapter); |
|
6392 |
|
6393 /* report the system wakeup cause from S3/S4 */ |
|
6394 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
|
6395 u16 phy_data; |
|
6396 |
|
6397 e1e_rphy(&adapter->hw, BM_WUS, &phy_data); |
|
6398 if (phy_data) { |
|
6399 e_info("PHY Wakeup cause - %s\n", |
|
6400 phy_data & E1000_WUS_EX ? "Unicast Packet" : |
|
6401 phy_data & E1000_WUS_MC ? "Multicast Packet" : |
|
6402 phy_data & E1000_WUS_BC ? "Broadcast Packet" : |
|
6403 phy_data & E1000_WUS_MAG ? "Magic Packet" : |
|
6404 phy_data & E1000_WUS_LNKC ? |
|
6405 "Link Status Change" : "other"); |
|
6406 } |
|
6407 e1e_wphy(&adapter->hw, BM_WUS, ~0); |
|
6408 } else { |
|
6409 u32 wus = er32(WUS); |
|
6410 |
|
6411 if (wus) { |
|
6412 e_info("MAC Wakeup cause - %s\n", |
|
6413 wus & E1000_WUS_EX ? "Unicast Packet" : |
|
6414 wus & E1000_WUS_MC ? "Multicast Packet" : |
|
6415 wus & E1000_WUS_BC ? "Broadcast Packet" : |
|
6416 wus & E1000_WUS_MAG ? "Magic Packet" : |
|
6417 wus & E1000_WUS_LNKC ? "Link Status Change" : |
|
6418 "other"); |
|
6419 } |
|
6420 ew32(WUS, ~0); |
|
6421 } |
|
6422 |
|
6423 e1000e_reset(adapter); |
|
6424 |
|
6425 e1000_init_manageability_pt(adapter); |
|
6426 |
|
6427 /* If the controller has AMT, do not set DRV_LOAD until the interface |
|
6428 * is up. For all other cases, let the f/w know that the h/w is now |
|
6429 * under the control of the driver. |
|
6430 */ |
|
6431 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6432 e1000e_get_hw_control(adapter); |
|
6433 |
|
6434 return 0; |
|
6435 } |
|
6436 |
|
6437 #ifdef CONFIG_PM_SLEEP |
|
6438 static int e1000e_pm_thaw(struct device *dev) |
|
6439 { |
|
6440 struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); |
|
6441 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6442 |
|
6443 e1000e_set_interrupt_capability(adapter); |
|
6444 if (netif_running(netdev)) { |
|
6445 u32 err = e1000_request_irq(adapter); |
|
6446 |
|
6447 if (err) |
|
6448 return err; |
|
6449 |
|
6450 e1000e_up(adapter); |
|
6451 } |
|
6452 |
|
6453 netif_device_attach(netdev); |
|
6454 |
|
6455 return 0; |
|
6456 } |
|
6457 |
|
6458 static int e1000e_pm_suspend(struct device *dev) |
|
6459 { |
|
6460 struct pci_dev *pdev = to_pci_dev(dev); |
|
6461 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6462 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6463 |
|
6464 if (adapter->ecdev) |
|
6465 return -EBUSY; |
|
6466 |
|
6467 e1000e_pm_freeze(dev); |
|
6468 |
|
6469 return __e1000_shutdown(pdev, false); |
|
6470 } |
|
6471 |
|
6472 static int e1000e_pm_resume(struct device *dev) |
|
6473 { |
|
6474 struct pci_dev *pdev = to_pci_dev(dev); |
|
6475 int rc; |
|
6476 |
|
6477 rc = __e1000_resume(pdev); |
|
6478 if (rc) |
|
6479 return rc; |
|
6480 |
|
6481 return e1000e_pm_thaw(dev); |
|
6482 } |
|
6483 #endif /* CONFIG_PM_SLEEP */ |
|
6484 |
|
6485 #ifdef CONFIG_PM_RUNTIME |
|
6486 static int e1000e_pm_runtime_idle(struct device *dev) |
|
6487 { |
|
6488 struct pci_dev *pdev = to_pci_dev(dev); |
|
6489 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6490 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6491 |
|
6492 if (!e1000e_has_link(adapter)) |
|
6493 pm_schedule_suspend(dev, 5 * MSEC_PER_SEC); |
|
6494 |
|
6495 return -EBUSY; |
|
6496 } |
|
6497 |
|
6498 static int e1000e_pm_runtime_resume(struct device *dev) |
|
6499 { |
|
6500 struct pci_dev *pdev = to_pci_dev(dev); |
|
6501 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6502 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6503 int rc; |
|
6504 |
|
6505 rc = __e1000_resume(pdev); |
|
6506 if (rc) |
|
6507 return rc; |
|
6508 |
|
6509 if (netdev->flags & IFF_UP) |
|
6510 rc = e1000e_up(adapter); |
|
6511 |
|
6512 return rc; |
|
6513 } |
|
6514 |
|
6515 static int e1000e_pm_runtime_suspend(struct device *dev) |
|
6516 { |
|
6517 struct pci_dev *pdev = to_pci_dev(dev); |
|
6518 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6519 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6520 |
|
6521 if (netdev->flags & IFF_UP) { |
|
6522 int count = E1000_CHECK_RESET_COUNT; |
|
6523 |
|
6524 while (test_bit(__E1000_RESETTING, &adapter->state) && count--) |
|
6525 usleep_range(10000, 20000); |
|
6526 |
|
6527 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
|
6528 |
|
6529 /* Down the device without resetting the hardware */ |
|
6530 e1000e_down(adapter, false); |
|
6531 } |
|
6532 |
|
6533 if (__e1000_shutdown(pdev, true)) { |
|
6534 e1000e_pm_runtime_resume(dev); |
|
6535 return -EBUSY; |
|
6536 } |
|
6537 |
|
6538 return 0; |
|
6539 } |
|
6540 #endif /* CONFIG_PM_RUNTIME */ |
|
6541 #endif /* CONFIG_PM */ |
|
6542 |
|
6543 static void e1000_shutdown(struct pci_dev *pdev) |
|
6544 { |
|
6545 e1000e_pm_freeze(&pdev->dev); |
|
6546 |
|
6547 __e1000_shutdown(pdev, false); |
|
6548 } |
|
6549 |
|
6550 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
6551 |
|
6552 static irqreturn_t e1000_intr_msix(int __always_unused irq, void *data) |
|
6553 { |
|
6554 struct net_device *netdev = data; |
|
6555 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6556 |
|
6557 if (adapter->msix_entries) { |
|
6558 int vector, msix_irq; |
|
6559 |
|
6560 vector = 0; |
|
6561 msix_irq = adapter->msix_entries[vector].vector; |
|
6562 disable_irq(msix_irq); |
|
6563 e1000_intr_msix_rx(msix_irq, netdev); |
|
6564 enable_irq(msix_irq); |
|
6565 |
|
6566 vector++; |
|
6567 msix_irq = adapter->msix_entries[vector].vector; |
|
6568 disable_irq(msix_irq); |
|
6569 e1000_intr_msix_tx(msix_irq, netdev); |
|
6570 enable_irq(msix_irq); |
|
6571 |
|
6572 vector++; |
|
6573 msix_irq = adapter->msix_entries[vector].vector; |
|
6574 disable_irq(msix_irq); |
|
6575 e1000_msix_other(msix_irq, netdev); |
|
6576 enable_irq(msix_irq); |
|
6577 } |
|
6578 |
|
6579 return IRQ_HANDLED; |
|
6580 } |
|
6581 |
|
6582 /** |
|
6583 * e1000_netpoll |
|
6584 * @netdev: network interface device structure |
|
6585 * |
|
6586 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
6587 * without having to re-enable interrupts. It's not called while |
|
6588 * the interrupt routine is executing. |
|
6589 */ |
|
6590 static void e1000_netpoll(struct net_device *netdev) |
|
6591 { |
|
6592 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6593 |
|
6594 switch (adapter->int_mode) { |
|
6595 case E1000E_INT_MODE_MSIX: |
|
6596 e1000_intr_msix(adapter->pdev->irq, netdev); |
|
6597 break; |
|
6598 case E1000E_INT_MODE_MSI: |
|
6599 disable_irq(adapter->pdev->irq); |
|
6600 e1000_intr_msi(adapter->pdev->irq, netdev); |
|
6601 enable_irq(adapter->pdev->irq); |
|
6602 break; |
|
6603 default: /* E1000E_INT_MODE_LEGACY */ |
|
6604 disable_irq(adapter->pdev->irq); |
|
6605 e1000_intr(adapter->pdev->irq, netdev); |
|
6606 enable_irq(adapter->pdev->irq); |
|
6607 break; |
|
6608 } |
|
6609 } |
|
6610 #endif |
|
6611 |
|
6612 /** |
|
6613 * e1000_io_error_detected - called when PCI error is detected |
|
6614 * @pdev: Pointer to PCI device |
|
6615 * @state: The current pci connection state |
|
6616 * |
|
6617 * This function is called after a PCI bus error affecting |
|
6618 * this device has been detected. |
|
6619 */ |
|
6620 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
6621 pci_channel_state_t state) |
|
6622 { |
|
6623 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6624 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6625 |
|
6626 netif_device_detach(netdev); |
|
6627 |
|
6628 if (state == pci_channel_io_perm_failure) |
|
6629 return PCI_ERS_RESULT_DISCONNECT; |
|
6630 |
|
6631 if (netif_running(netdev)) |
|
6632 e1000e_down(adapter, true); |
|
6633 pci_disable_device(pdev); |
|
6634 |
|
6635 /* Request a slot slot reset. */ |
|
6636 return PCI_ERS_RESULT_NEED_RESET; |
|
6637 } |
|
6638 |
|
6639 /** |
|
6640 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
6641 * @pdev: Pointer to PCI device |
|
6642 * |
|
6643 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
6644 * resembles the first-half of the e1000e_pm_resume routine. |
|
6645 */ |
|
6646 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
6647 { |
|
6648 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6649 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6650 struct e1000_hw *hw = &adapter->hw; |
|
6651 u16 aspm_disable_flag = 0; |
|
6652 int err; |
|
6653 pci_ers_result_t result; |
|
6654 |
|
6655 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6656 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6657 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6658 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6659 if (aspm_disable_flag) |
|
6660 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6661 |
|
6662 err = pci_enable_device_mem(pdev); |
|
6663 if (err) { |
|
6664 dev_err(&pdev->dev, |
|
6665 "Cannot re-enable PCI device after reset.\n"); |
|
6666 result = PCI_ERS_RESULT_DISCONNECT; |
|
6667 } else { |
|
6668 pdev->state_saved = true; |
|
6669 pci_restore_state(pdev); |
|
6670 pci_set_master(pdev); |
|
6671 |
|
6672 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
6673 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
6674 |
|
6675 e1000e_reset(adapter); |
|
6676 ew32(WUS, ~0); |
|
6677 result = PCI_ERS_RESULT_RECOVERED; |
|
6678 } |
|
6679 |
|
6680 pci_cleanup_aer_uncorrect_error_status(pdev); |
|
6681 |
|
6682 return result; |
|
6683 } |
|
6684 |
|
6685 /** |
|
6686 * e1000_io_resume - called when traffic can start flowing again. |
|
6687 * @pdev: Pointer to PCI device |
|
6688 * |
|
6689 * This callback is called when the error recovery driver tells us that |
|
6690 * its OK to resume normal operation. Implementation resembles the |
|
6691 * second-half of the e1000e_pm_resume routine. |
|
6692 */ |
|
6693 static void e1000_io_resume(struct pci_dev *pdev) |
|
6694 { |
|
6695 struct net_device *netdev = pci_get_drvdata(pdev); |
|
6696 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6697 |
|
6698 e1000_init_manageability_pt(adapter); |
|
6699 |
|
6700 if (netif_running(netdev)) { |
|
6701 if (e1000e_up(adapter)) { |
|
6702 dev_err(&pdev->dev, |
|
6703 "can't bring device back up after reset\n"); |
|
6704 return; |
|
6705 } |
|
6706 } |
|
6707 |
|
6708 netif_device_attach(netdev); |
|
6709 |
|
6710 /* If the controller has AMT, do not set DRV_LOAD until the interface |
|
6711 * is up. For all other cases, let the f/w know that the h/w is now |
|
6712 * under the control of the driver. |
|
6713 */ |
|
6714 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
6715 e1000e_get_hw_control(adapter); |
|
6716 } |
|
6717 |
|
6718 static void e1000_print_device_info(struct e1000_adapter *adapter) |
|
6719 { |
|
6720 struct e1000_hw *hw = &adapter->hw; |
|
6721 struct net_device *netdev = adapter->netdev; |
|
6722 u32 ret_val; |
|
6723 u8 pba_str[E1000_PBANUM_LENGTH]; |
|
6724 |
|
6725 /* print bus type/speed/width info */ |
|
6726 e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
|
6727 /* bus width */ |
|
6728 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
|
6729 "Width x1"), |
|
6730 /* MAC address */ |
|
6731 netdev->dev_addr); |
|
6732 e_info("Intel(R) PRO/%s Network Connection\n", |
|
6733 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); |
|
6734 ret_val = e1000_read_pba_string_generic(hw, pba_str, |
|
6735 E1000_PBANUM_LENGTH); |
|
6736 if (ret_val) |
|
6737 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str)); |
|
6738 e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
|
6739 hw->mac.type, hw->phy.type, pba_str); |
|
6740 } |
|
6741 |
|
6742 static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
|
6743 { |
|
6744 struct e1000_hw *hw = &adapter->hw; |
|
6745 int ret_val; |
|
6746 u16 buf = 0; |
|
6747 |
|
6748 if (hw->mac.type != e1000_82573) |
|
6749 return; |
|
6750 |
|
6751 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); |
|
6752 le16_to_cpus(&buf); |
|
6753 if (!ret_val && (!(buf & (1 << 0)))) { |
|
6754 /* Deep Smart Power Down (DSPD) */ |
|
6755 dev_warn(&adapter->pdev->dev, |
|
6756 "Warning: detected DSPD enabled in EEPROM\n"); |
|
6757 } |
|
6758 } |
|
6759 |
|
6760 static int e1000_set_features(struct net_device *netdev, |
|
6761 netdev_features_t features) |
|
6762 { |
|
6763 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6764 netdev_features_t changed = features ^ netdev->features; |
|
6765 |
|
6766 if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) |
|
6767 adapter->flags |= FLAG_TSO_FORCE; |
|
6768 |
|
6769 if (!(changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX | |
|
6770 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | |
|
6771 NETIF_F_RXALL))) |
|
6772 return 0; |
|
6773 |
|
6774 if (changed & NETIF_F_RXFCS) { |
|
6775 if (features & NETIF_F_RXFCS) { |
|
6776 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6777 } else { |
|
6778 /* We need to take it back to defaults, which might mean |
|
6779 * stripping is still disabled at the adapter level. |
|
6780 */ |
|
6781 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING) |
|
6782 adapter->flags2 |= FLAG2_CRC_STRIPPING; |
|
6783 else |
|
6784 adapter->flags2 &= ~FLAG2_CRC_STRIPPING; |
|
6785 } |
|
6786 } |
|
6787 |
|
6788 netdev->features = features; |
|
6789 |
|
6790 if (netif_running(netdev)) |
|
6791 e1000e_reinit_locked(adapter); |
|
6792 else |
|
6793 e1000e_reset(adapter); |
|
6794 |
|
6795 return 0; |
|
6796 } |
|
6797 |
|
6798 static const struct net_device_ops e1000e_netdev_ops = { |
|
6799 .ndo_open = e1000_open, |
|
6800 .ndo_stop = e1000_close, |
|
6801 .ndo_start_xmit = e1000_xmit_frame, |
|
6802 .ndo_get_stats64 = e1000e_get_stats64, |
|
6803 .ndo_set_rx_mode = e1000e_set_rx_mode, |
|
6804 .ndo_set_mac_address = e1000_set_mac, |
|
6805 .ndo_change_mtu = e1000_change_mtu, |
|
6806 .ndo_do_ioctl = e1000_ioctl, |
|
6807 .ndo_tx_timeout = e1000_tx_timeout, |
|
6808 .ndo_validate_addr = eth_validate_addr, |
|
6809 |
|
6810 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
6811 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
6812 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
6813 .ndo_poll_controller = e1000_netpoll, |
|
6814 #endif |
|
6815 .ndo_set_features = e1000_set_features, |
|
6816 }; |
|
6817 |
|
6818 /** |
|
6819 * ec_poll - Ethercat poll Routine |
|
6820 * @netdev: net device structure |
|
6821 * |
|
6822 * This function can never fail. |
|
6823 * |
|
6824 **/ |
|
6825 void ec_poll(struct net_device *netdev) |
|
6826 { |
|
6827 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
6828 |
|
6829 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
6830 struct e1000_hw *hw = &adapter->hw; |
|
6831 hw->mac.get_link_status = true; |
|
6832 e1000_watchdog_task(&adapter->watchdog_task); |
|
6833 adapter->ec_watchdog_jiffies = jiffies; |
|
6834 } |
|
6835 |
|
6836 #ifdef CONFIG_PCI_MSI |
|
6837 e1000_intr_msi(0, netdev); |
|
6838 #else |
|
6839 e1000_intr(0, netdev); |
|
6840 #endif |
|
6841 } |
|
6842 |
|
6843 /** |
|
6844 * e1000_probe - Device Initialization Routine |
|
6845 * @pdev: PCI device information struct |
|
6846 * @ent: entry in e1000_pci_tbl |
|
6847 * |
|
6848 * Returns 0 on success, negative on failure |
|
6849 * |
|
6850 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
6851 * The OS initialization, configuring of the adapter private structure, |
|
6852 * and a hardware reset occur. |
|
6853 **/ |
|
6854 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
|
6855 { |
|
6856 struct net_device *netdev; |
|
6857 struct e1000_adapter *adapter; |
|
6858 struct e1000_hw *hw; |
|
6859 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; |
|
6860 resource_size_t mmio_start, mmio_len; |
|
6861 resource_size_t flash_start, flash_len; |
|
6862 static int cards_found; |
|
6863 u16 aspm_disable_flag = 0; |
|
6864 int bars, i, err, pci_using_dac; |
|
6865 u16 eeprom_data = 0; |
|
6866 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
6867 |
|
6868 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
|
6869 aspm_disable_flag = PCIE_LINK_STATE_L0S; |
|
6870 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
|
6871 aspm_disable_flag |= PCIE_LINK_STATE_L1; |
|
6872 if (aspm_disable_flag) |
|
6873 e1000e_disable_aspm(pdev, aspm_disable_flag); |
|
6874 |
|
6875 err = pci_enable_device_mem(pdev); |
|
6876 if (err) |
|
6877 return err; |
|
6878 |
|
6879 pci_using_dac = 0; |
|
6880 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
|
6881 if (!err) { |
|
6882 pci_using_dac = 1; |
|
6883 } else { |
|
6884 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
|
6885 if (err) { |
|
6886 dev_err(&pdev->dev, |
|
6887 "No usable DMA configuration, aborting\n"); |
|
6888 goto err_dma; |
|
6889 } |
|
6890 } |
|
6891 |
|
6892 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
6893 err = pci_request_selected_regions_exclusive(pdev, bars, |
|
6894 e1000e_driver_name); |
|
6895 if (err) |
|
6896 goto err_pci_reg; |
|
6897 |
|
6898 /* AER (Advanced Error Reporting) hooks */ |
|
6899 pci_enable_pcie_error_reporting(pdev); |
|
6900 |
|
6901 pci_set_master(pdev); |
|
6902 /* PCI config space info */ |
|
6903 err = pci_save_state(pdev); |
|
6904 if (err) |
|
6905 goto err_alloc_etherdev; |
|
6906 |
|
6907 err = -ENOMEM; |
|
6908 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
6909 if (!netdev) |
|
6910 goto err_alloc_etherdev; |
|
6911 |
|
6912 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
6913 |
|
6914 netdev->irq = pdev->irq; |
|
6915 |
|
6916 pci_set_drvdata(pdev, netdev); |
|
6917 adapter = netdev_priv(netdev); |
|
6918 hw = &adapter->hw; |
|
6919 adapter->netdev = netdev; |
|
6920 adapter->pdev = pdev; |
|
6921 adapter->ei = ei; |
|
6922 adapter->pba = ei->pba; |
|
6923 adapter->flags = ei->flags; |
|
6924 adapter->flags2 = ei->flags2; |
|
6925 adapter->hw.adapter = adapter; |
|
6926 adapter->hw.mac.type = ei->mac; |
|
6927 adapter->max_hw_frame_size = ei->max_hw_frame_size; |
|
6928 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
|
6929 |
|
6930 mmio_start = pci_resource_start(pdev, 0); |
|
6931 mmio_len = pci_resource_len(pdev, 0); |
|
6932 |
|
6933 err = -EIO; |
|
6934 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
6935 if (!adapter->hw.hw_addr) |
|
6936 goto err_ioremap; |
|
6937 |
|
6938 if ((adapter->flags & FLAG_HAS_FLASH) && |
|
6939 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
6940 flash_start = pci_resource_start(pdev, 1); |
|
6941 flash_len = pci_resource_len(pdev, 1); |
|
6942 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
6943 if (!adapter->hw.flash_address) |
|
6944 goto err_flashmap; |
|
6945 } |
|
6946 |
|
6947 /* Set default EEE advertisement */ |
|
6948 if (adapter->flags2 & FLAG2_HAS_EEE) |
|
6949 adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; |
|
6950 |
|
6951 /* construct the net_device struct */ |
|
6952 netdev->netdev_ops = &e1000e_netdev_ops; |
|
6953 e1000e_set_ethtool_ops(netdev); |
|
6954 netdev->watchdog_timeo = 5 * HZ; |
|
6955 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64); |
|
6956 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
|
6957 |
|
6958 netdev->mem_start = mmio_start; |
|
6959 netdev->mem_end = mmio_start + mmio_len; |
|
6960 |
|
6961 adapter->bd_number = cards_found++; |
|
6962 |
|
6963 e1000e_check_options(adapter); |
|
6964 |
|
6965 /* setup adapter struct */ |
|
6966 err = e1000_sw_init(adapter); |
|
6967 if (err) |
|
6968 goto err_sw_init; |
|
6969 |
|
6970 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
|
6971 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
|
6972 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
|
6973 |
|
6974 err = ei->get_variants(adapter); |
|
6975 if (err) |
|
6976 goto err_hw_init; |
|
6977 |
|
6978 if ((adapter->flags & FLAG_IS_ICH) && |
|
6979 (adapter->flags & FLAG_READ_ONLY_NVM)) |
|
6980 e1000e_write_protect_nvm_ich8lan(&adapter->hw); |
|
6981 |
|
6982 hw->mac.ops.get_bus_info(&adapter->hw); |
|
6983 |
|
6984 adapter->hw.phy.autoneg_wait_to_complete = 0; |
|
6985 |
|
6986 /* Copper options */ |
|
6987 if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
|
6988 adapter->hw.phy.mdix = AUTO_ALL_MODES; |
|
6989 adapter->hw.phy.disable_polarity_correction = 0; |
|
6990 adapter->hw.phy.ms_type = e1000_ms_hw_default; |
|
6991 } |
|
6992 |
|
6993 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw)) |
|
6994 dev_info(&pdev->dev, |
|
6995 "PHY reset is blocked due to SOL/IDER session.\n"); |
|
6996 |
|
6997 /* Set initial default active device features */ |
|
6998 netdev->features = (NETIF_F_SG | |
|
6999 NETIF_F_HW_VLAN_CTAG_RX | |
|
7000 NETIF_F_HW_VLAN_CTAG_TX | |
|
7001 NETIF_F_TSO | |
|
7002 NETIF_F_TSO6 | |
|
7003 NETIF_F_RXHASH | |
|
7004 NETIF_F_RXCSUM | |
|
7005 NETIF_F_HW_CSUM); |
|
7006 |
|
7007 /* Set user-changeable features (subset of all device features) */ |
|
7008 netdev->hw_features = netdev->features; |
|
7009 netdev->hw_features |= NETIF_F_RXFCS; |
|
7010 netdev->priv_flags |= IFF_SUPP_NOFCS; |
|
7011 netdev->hw_features |= NETIF_F_RXALL; |
|
7012 |
|
7013 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
|
7014 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
|
7015 |
|
7016 netdev->vlan_features |= (NETIF_F_SG | |
|
7017 NETIF_F_TSO | |
|
7018 NETIF_F_TSO6 | |
|
7019 NETIF_F_HW_CSUM); |
|
7020 |
|
7021 netdev->priv_flags |= IFF_UNICAST_FLT; |
|
7022 |
|
7023 if (pci_using_dac) { |
|
7024 netdev->features |= NETIF_F_HIGHDMA; |
|
7025 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
7026 } |
|
7027 |
|
7028 if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
|
7029 adapter->flags |= FLAG_MNG_PT_ENABLED; |
|
7030 |
|
7031 /* before reading the NVM, reset the controller to |
|
7032 * put the device in a known good starting state |
|
7033 */ |
|
7034 adapter->hw.mac.ops.reset_hw(&adapter->hw); |
|
7035 |
|
7036 /* systems with ASPM and others may see the checksum fail on the first |
|
7037 * attempt. Let's give it a few tries |
|
7038 */ |
|
7039 for (i = 0;; i++) { |
|
7040 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) |
|
7041 break; |
|
7042 if (i == 2) { |
|
7043 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
|
7044 err = -EIO; |
|
7045 goto err_eeprom; |
|
7046 } |
|
7047 } |
|
7048 |
|
7049 e1000_eeprom_checks(adapter); |
|
7050 |
|
7051 /* copy the MAC address */ |
|
7052 if (e1000e_read_mac_addr(&adapter->hw)) |
|
7053 dev_err(&pdev->dev, |
|
7054 "NVM Read Error while reading MAC address\n"); |
|
7055 |
|
7056 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); |
|
7057 |
|
7058 if (!is_valid_ether_addr(netdev->dev_addr)) { |
|
7059 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
|
7060 netdev->dev_addr); |
|
7061 err = -EIO; |
|
7062 goto err_eeprom; |
|
7063 } |
|
7064 |
|
7065 init_timer(&adapter->watchdog_timer); |
|
7066 adapter->watchdog_timer.function = e1000_watchdog; |
|
7067 adapter->watchdog_timer.data = (unsigned long)adapter; |
|
7068 |
|
7069 init_timer(&adapter->phy_info_timer); |
|
7070 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
7071 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
7072 |
|
7073 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
7074 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); |
|
7075 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
|
7076 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); |
|
7077 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
|
7078 |
|
7079 /* Initialize link parameters. User can change them with ethtool */ |
|
7080 adapter->hw.mac.autoneg = 1; |
|
7081 adapter->fc_autoneg = true; |
|
7082 adapter->hw.fc.requested_mode = e1000_fc_default; |
|
7083 adapter->hw.fc.current_mode = e1000_fc_default; |
|
7084 adapter->hw.phy.autoneg_advertised = 0x2f; |
|
7085 |
|
7086 /* Initial Wake on LAN setting - If APM wake is enabled in |
|
7087 * the EEPROM, enable the ACPI Magic Packet filter |
|
7088 */ |
|
7089 if (adapter->flags & FLAG_APME_IN_WUC) { |
|
7090 /* APME bit in EEPROM is mapped to WUC.APME */ |
|
7091 eeprom_data = er32(WUC); |
|
7092 eeprom_apme_mask = E1000_WUC_APME; |
|
7093 if ((hw->mac.type > e1000_ich10lan) && |
|
7094 (eeprom_data & E1000_WUC_PHY_WAKE)) |
|
7095 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
|
7096 } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
|
7097 if (adapter->flags & FLAG_APME_CHECK_PORT_B && |
|
7098 (adapter->hw.bus.func == 1)) |
|
7099 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B, |
|
7100 1, &eeprom_data); |
|
7101 else |
|
7102 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A, |
|
7103 1, &eeprom_data); |
|
7104 } |
|
7105 |
|
7106 /* fetch WoL from EEPROM */ |
|
7107 if (eeprom_data & eeprom_apme_mask) |
|
7108 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
7109 |
|
7110 /* now that we have the eeprom settings, apply the special cases |
|
7111 * where the eeprom may be wrong or the board simply won't support |
|
7112 * wake on lan on a particular port |
|
7113 */ |
|
7114 if (!(adapter->flags & FLAG_HAS_WOL)) |
|
7115 adapter->eeprom_wol = 0; |
|
7116 |
|
7117 /* initialize the wol settings based on the eeprom settings */ |
|
7118 adapter->wol = adapter->eeprom_wol; |
|
7119 |
|
7120 /* make sure adapter isn't asleep if manageability is enabled */ |
|
7121 if (adapter->wol || (adapter->flags & FLAG_MNG_PT_ENABLED) || |
|
7122 (hw->mac.ops.check_mng_mode(hw))) |
|
7123 device_wakeup_enable(&pdev->dev); |
|
7124 |
|
7125 /* save off EEPROM version number */ |
|
7126 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
|
7127 |
|
7128 /* reset the hardware with the new settings */ |
|
7129 e1000e_reset(adapter); |
|
7130 |
|
7131 /* If the controller has AMT, do not set DRV_LOAD until the interface |
|
7132 * is up. For all other cases, let the f/w know that the h/w is now |
|
7133 * under the control of the driver. |
|
7134 */ |
|
7135 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
7136 e1000e_get_hw_control(adapter); |
|
7137 |
|
7138 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
7139 if (adapter->ecdev) { |
|
7140 err = ecdev_open(adapter->ecdev); |
|
7141 if (err) { |
|
7142 ecdev_withdraw(adapter->ecdev); |
|
7143 goto err_register; |
|
7144 } |
|
7145 adapter->ec_watchdog_jiffies = jiffies; |
|
7146 } else { |
|
7147 strlcpy(netdev->name, "eth%d", sizeof(netdev->name)); |
|
7148 err = register_netdev(netdev); |
|
7149 if (err) |
|
7150 goto err_register; |
|
7151 |
|
7152 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
7153 netif_carrier_off(netdev); |
|
7154 } |
|
7155 |
|
7156 /* init PTP hardware clock */ |
|
7157 e1000e_ptp_init(adapter); |
|
7158 |
|
7159 e1000_print_device_info(adapter); |
|
7160 |
|
7161 if (pci_dev_run_wake(pdev)) |
|
7162 pm_runtime_put_noidle(&pdev->dev); |
|
7163 |
|
7164 return 0; |
|
7165 |
|
7166 err_register: |
|
7167 if (!(adapter->flags & FLAG_HAS_AMT)) |
|
7168 e1000e_release_hw_control(adapter); |
|
7169 err_eeprom: |
|
7170 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw)) |
|
7171 e1000_phy_hw_reset(&adapter->hw); |
|
7172 err_hw_init: |
|
7173 kfree(adapter->tx_ring); |
|
7174 kfree(adapter->rx_ring); |
|
7175 err_sw_init: |
|
7176 if (adapter->hw.flash_address) |
|
7177 iounmap(adapter->hw.flash_address); |
|
7178 e1000e_reset_interrupt_capability(adapter); |
|
7179 err_flashmap: |
|
7180 iounmap(adapter->hw.hw_addr); |
|
7181 err_ioremap: |
|
7182 free_netdev(netdev); |
|
7183 err_alloc_etherdev: |
|
7184 pci_release_selected_regions(pdev, |
|
7185 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
7186 err_pci_reg: |
|
7187 err_dma: |
|
7188 pci_disable_device(pdev); |
|
7189 return err; |
|
7190 } |
|
7191 |
|
7192 /** |
|
7193 * e1000_remove - Device Removal Routine |
|
7194 * @pdev: PCI device information struct |
|
7195 * |
|
7196 * e1000_remove is called by the PCI subsystem to alert the driver |
|
7197 * that it should release a PCI device. The could be caused by a |
|
7198 * Hot-Plug event, or because the driver is going to be removed from |
|
7199 * memory. |
|
7200 **/ |
|
7201 static void e1000_remove(struct pci_dev *pdev) |
|
7202 { |
|
7203 struct net_device *netdev = pci_get_drvdata(pdev); |
|
7204 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
7205 bool down = test_bit(__E1000_DOWN, &adapter->state); |
|
7206 |
|
7207 e1000e_ptp_remove(adapter); |
|
7208 |
|
7209 if (adapter->ecdev) { |
|
7210 ecdev_close(adapter->ecdev); |
|
7211 ecdev_withdraw(adapter->ecdev); |
|
7212 } |
|
7213 |
|
7214 /* The timers may be rescheduled, so explicitly disable them |
|
7215 * from being rescheduled. |
|
7216 */ |
|
7217 if (!down) |
|
7218 set_bit(__E1000_DOWN, &adapter->state); |
|
7219 del_timer_sync(&adapter->watchdog_timer); |
|
7220 del_timer_sync(&adapter->phy_info_timer); |
|
7221 |
|
7222 cancel_work_sync(&adapter->reset_task); |
|
7223 cancel_work_sync(&adapter->watchdog_task); |
|
7224 cancel_work_sync(&adapter->downshift_task); |
|
7225 cancel_work_sync(&adapter->update_phy_task); |
|
7226 cancel_work_sync(&adapter->print_hang_task); |
|
7227 |
|
7228 if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { |
|
7229 cancel_work_sync(&adapter->tx_hwtstamp_work); |
|
7230 if (adapter->tx_hwtstamp_skb) { |
|
7231 dev_kfree_skb_any(adapter->tx_hwtstamp_skb); |
|
7232 adapter->tx_hwtstamp_skb = NULL; |
|
7233 } |
|
7234 } |
|
7235 |
|
7236 /* Don't lie to e1000_close() down the road. */ |
|
7237 if (!down) |
|
7238 clear_bit(__E1000_DOWN, &adapter->state); |
|
7239 |
|
7240 if (!adapter->ecdev) { |
|
7241 unregister_netdev(netdev); |
|
7242 } |
|
7243 |
|
7244 if (pci_dev_run_wake(pdev)) |
|
7245 pm_runtime_get_noresume(&pdev->dev); |
|
7246 |
|
7247 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
7248 * would have already happened in close and is redundant. |
|
7249 */ |
|
7250 e1000e_release_hw_control(adapter); |
|
7251 |
|
7252 e1000e_reset_interrupt_capability(adapter); |
|
7253 kfree(adapter->tx_ring); |
|
7254 kfree(adapter->rx_ring); |
|
7255 |
|
7256 iounmap(adapter->hw.hw_addr); |
|
7257 if (adapter->hw.flash_address) |
|
7258 iounmap(adapter->hw.flash_address); |
|
7259 pci_release_selected_regions(pdev, |
|
7260 pci_select_bars(pdev, IORESOURCE_MEM)); |
|
7261 |
|
7262 free_netdev(netdev); |
|
7263 |
|
7264 /* AER disable */ |
|
7265 pci_disable_pcie_error_reporting(pdev); |
|
7266 |
|
7267 pci_disable_device(pdev); |
|
7268 } |
|
7269 |
|
7270 /* PCI Error Recovery (ERS) */ |
|
7271 static const struct pci_error_handlers e1000_err_handler = { |
|
7272 .error_detected = e1000_io_error_detected, |
|
7273 .slot_reset = e1000_io_slot_reset, |
|
7274 .resume = e1000_io_resume, |
|
7275 }; |
|
7276 |
|
7277 static const struct pci_device_id e1000_pci_tbl[] = { |
|
7278 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
|
7279 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, |
|
7280 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, |
|
7281 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), |
|
7282 board_82571 }, |
|
7283 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
|
7284 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, |
|
7285 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
|
7286 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, |
|
7287 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, |
|
7288 |
|
7289 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
|
7290 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, |
|
7291 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, |
|
7292 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, |
|
7293 |
|
7294 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
|
7295 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, |
|
7296 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, |
|
7297 |
|
7298 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
|
7299 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
|
7300 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
|
7301 |
|
7302 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
|
7303 board_80003es2lan }, |
|
7304 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), |
|
7305 board_80003es2lan }, |
|
7306 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), |
|
7307 board_80003es2lan }, |
|
7308 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), |
|
7309 board_80003es2lan }, |
|
7310 |
|
7311 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
|
7312 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, |
|
7313 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, |
|
7314 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, |
|
7315 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, |
|
7316 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, |
|
7317 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, |
|
7318 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
|
7319 |
|
7320 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
|
7321 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, |
|
7322 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, |
|
7323 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, |
|
7324 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, |
|
7325 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
|
7326 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
|
7327 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, |
|
7328 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, |
|
7329 |
|
7330 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, |
|
7331 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, |
|
7332 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, |
|
7333 |
|
7334 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
|
7335 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, |
|
7336 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
|
7337 |
|
7338 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
|
7339 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, |
|
7340 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, |
|
7341 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, |
|
7342 |
|
7343 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
|
7344 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, |
|
7345 |
|
7346 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt }, |
|
7347 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt }, |
|
7348 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt }, |
|
7349 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt }, |
|
7350 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM2), board_pch_lpt }, |
|
7351 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V2), board_pch_lpt }, |
|
7352 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM3), board_pch_lpt }, |
|
7353 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V3), board_pch_lpt }, |
|
7354 |
|
7355 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ |
|
7356 }; |
|
7357 //MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
|
7358 |
|
7359 static const struct dev_pm_ops e1000_pm_ops = { |
|
7360 #ifdef CONFIG_PM_SLEEP |
|
7361 .suspend = e1000e_pm_suspend, |
|
7362 .resume = e1000e_pm_resume, |
|
7363 .freeze = e1000e_pm_freeze, |
|
7364 .thaw = e1000e_pm_thaw, |
|
7365 .poweroff = e1000e_pm_suspend, |
|
7366 .restore = e1000e_pm_resume, |
|
7367 #endif |
|
7368 SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend, e1000e_pm_runtime_resume, |
|
7369 e1000e_pm_runtime_idle) |
|
7370 }; |
|
7371 |
|
7372 /* PCI Device API Driver */ |
|
7373 static struct pci_driver e1000_driver = { |
|
7374 .name = e1000e_driver_name, |
|
7375 .id_table = e1000_pci_tbl, |
|
7376 .probe = e1000_probe, |
|
7377 .remove = e1000_remove, |
|
7378 .driver = { |
|
7379 .pm = &e1000_pm_ops, |
|
7380 }, |
|
7381 .shutdown = e1000_shutdown, |
|
7382 .err_handler = &e1000_err_handler |
|
7383 }; |
|
7384 |
|
7385 /** |
|
7386 * e1000_init_module - Driver Registration Routine |
|
7387 * |
|
7388 * e1000_init_module is the first routine called when the driver is |
|
7389 * loaded. All it does is register with the PCI subsystem. |
|
7390 **/ |
|
7391 static int __init e1000_init_module(void) |
|
7392 { |
|
7393 int ret; |
|
7394 |
|
7395 pr_info("EtherCAT-capable Intel(R) PRO/1000 Network Driver - %s\n", |
|
7396 e1000e_driver_version); |
|
7397 pr_info("Copyright(c) 1999 - 2014 Intel Corporation.\n"); |
|
7398 ret = pci_register_driver(&e1000_driver); |
|
7399 |
|
7400 return ret; |
|
7401 } |
|
7402 module_init(e1000_init_module); |
|
7403 |
|
7404 /** |
|
7405 * e1000_exit_module - Driver Exit Cleanup Routine |
|
7406 * |
|
7407 * e1000_exit_module is called just before the driver is removed |
|
7408 * from memory. |
|
7409 **/ |
|
7410 static void __exit e1000_exit_module(void) |
|
7411 { |
|
7412 pci_unregister_driver(&e1000_driver); |
|
7413 } |
|
7414 module_exit(e1000_exit_module); |
|
7415 |
|
7416 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
|
7417 MODULE_DESCRIPTION("Ethercat-capable Intel(R) PRO/1000 Network Driver"); |
|
7418 MODULE_LICENSE("GPL"); |
|
7419 MODULE_VERSION(DRV_VERSION); |
|
7420 |
|
7421 /* netdev.c */ |