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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2006 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 *******************************************************************************/ |
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28 |
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29 #include "e1000.h" |
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30 #include <net/ip6_checksum.h> |
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31 |
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32 char e1000_driver_name[] = "e1000"; |
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33 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
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34 #ifndef CONFIG_E1000_NAPI |
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35 #define DRIVERNAPI |
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36 #else |
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37 #define DRIVERNAPI "-NAPI" |
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38 #endif |
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39 #define DRV_VERSION "7.3.20-k2"DRIVERNAPI |
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40 char e1000_driver_version[] = DRV_VERSION; |
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41 static char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
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42 |
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43 /* e1000_pci_tbl - PCI Device ID Table |
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44 * |
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45 * Last entry must be all 0s |
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46 * |
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47 * Macro expands to... |
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48 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} |
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49 */ |
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50 static struct pci_device_id e1000_pci_tbl[] = { |
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51 INTEL_E1000_ETHERNET_DEVICE(0x1000), |
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52 INTEL_E1000_ETHERNET_DEVICE(0x1001), |
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53 INTEL_E1000_ETHERNET_DEVICE(0x1004), |
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54 INTEL_E1000_ETHERNET_DEVICE(0x1008), |
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55 INTEL_E1000_ETHERNET_DEVICE(0x1009), |
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56 INTEL_E1000_ETHERNET_DEVICE(0x100C), |
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57 INTEL_E1000_ETHERNET_DEVICE(0x100D), |
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58 INTEL_E1000_ETHERNET_DEVICE(0x100E), |
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59 INTEL_E1000_ETHERNET_DEVICE(0x100F), |
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60 INTEL_E1000_ETHERNET_DEVICE(0x1010), |
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61 INTEL_E1000_ETHERNET_DEVICE(0x1011), |
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62 INTEL_E1000_ETHERNET_DEVICE(0x1012), |
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63 INTEL_E1000_ETHERNET_DEVICE(0x1013), |
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64 INTEL_E1000_ETHERNET_DEVICE(0x1014), |
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65 INTEL_E1000_ETHERNET_DEVICE(0x1015), |
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66 INTEL_E1000_ETHERNET_DEVICE(0x1016), |
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67 INTEL_E1000_ETHERNET_DEVICE(0x1017), |
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68 INTEL_E1000_ETHERNET_DEVICE(0x1018), |
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69 INTEL_E1000_ETHERNET_DEVICE(0x1019), |
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70 INTEL_E1000_ETHERNET_DEVICE(0x101A), |
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71 INTEL_E1000_ETHERNET_DEVICE(0x101D), |
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72 INTEL_E1000_ETHERNET_DEVICE(0x101E), |
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73 INTEL_E1000_ETHERNET_DEVICE(0x1026), |
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74 INTEL_E1000_ETHERNET_DEVICE(0x1027), |
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75 INTEL_E1000_ETHERNET_DEVICE(0x1028), |
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76 INTEL_E1000_ETHERNET_DEVICE(0x1049), |
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77 INTEL_E1000_ETHERNET_DEVICE(0x104A), |
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78 INTEL_E1000_ETHERNET_DEVICE(0x104B), |
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79 INTEL_E1000_ETHERNET_DEVICE(0x104C), |
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80 INTEL_E1000_ETHERNET_DEVICE(0x104D), |
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81 INTEL_E1000_ETHERNET_DEVICE(0x105E), |
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82 INTEL_E1000_ETHERNET_DEVICE(0x105F), |
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83 INTEL_E1000_ETHERNET_DEVICE(0x1060), |
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84 INTEL_E1000_ETHERNET_DEVICE(0x1075), |
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85 INTEL_E1000_ETHERNET_DEVICE(0x1076), |
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86 INTEL_E1000_ETHERNET_DEVICE(0x1077), |
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87 INTEL_E1000_ETHERNET_DEVICE(0x1078), |
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88 INTEL_E1000_ETHERNET_DEVICE(0x1079), |
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89 INTEL_E1000_ETHERNET_DEVICE(0x107A), |
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90 INTEL_E1000_ETHERNET_DEVICE(0x107B), |
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91 INTEL_E1000_ETHERNET_DEVICE(0x107C), |
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92 INTEL_E1000_ETHERNET_DEVICE(0x107D), |
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93 INTEL_E1000_ETHERNET_DEVICE(0x107E), |
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94 INTEL_E1000_ETHERNET_DEVICE(0x107F), |
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95 INTEL_E1000_ETHERNET_DEVICE(0x108A), |
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96 INTEL_E1000_ETHERNET_DEVICE(0x108B), |
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97 INTEL_E1000_ETHERNET_DEVICE(0x108C), |
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98 INTEL_E1000_ETHERNET_DEVICE(0x1096), |
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99 INTEL_E1000_ETHERNET_DEVICE(0x1098), |
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100 INTEL_E1000_ETHERNET_DEVICE(0x1099), |
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101 INTEL_E1000_ETHERNET_DEVICE(0x109A), |
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102 INTEL_E1000_ETHERNET_DEVICE(0x10A4), |
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103 INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
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104 INTEL_E1000_ETHERNET_DEVICE(0x10B9), |
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105 INTEL_E1000_ETHERNET_DEVICE(0x10BA), |
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106 INTEL_E1000_ETHERNET_DEVICE(0x10BB), |
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107 INTEL_E1000_ETHERNET_DEVICE(0x10BC), |
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108 INTEL_E1000_ETHERNET_DEVICE(0x10C4), |
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109 INTEL_E1000_ETHERNET_DEVICE(0x10C5), |
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110 /* required last entry */ |
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111 {0,} |
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112 }; |
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113 |
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114 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
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115 |
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116 int e1000_up(struct e1000_adapter *adapter); |
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117 void e1000_down(struct e1000_adapter *adapter); |
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118 void e1000_reinit_locked(struct e1000_adapter *adapter); |
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119 void e1000_reset(struct e1000_adapter *adapter); |
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120 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); |
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121 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
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122 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); |
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123 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); |
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124 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); |
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125 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
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126 struct e1000_tx_ring *txdr); |
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127 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
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128 struct e1000_rx_ring *rxdr); |
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129 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
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130 struct e1000_tx_ring *tx_ring); |
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131 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
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132 struct e1000_rx_ring *rx_ring); |
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133 void e1000_update_stats(struct e1000_adapter *adapter); |
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134 |
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135 static int e1000_init_module(void); |
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136 static void e1000_exit_module(void); |
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137 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
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138 static void __devexit e1000_remove(struct pci_dev *pdev); |
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139 static int e1000_alloc_queues(struct e1000_adapter *adapter); |
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140 static int e1000_sw_init(struct e1000_adapter *adapter); |
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141 static int e1000_open(struct net_device *netdev); |
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142 static int e1000_close(struct net_device *netdev); |
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143 static void e1000_configure_tx(struct e1000_adapter *adapter); |
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144 static void e1000_configure_rx(struct e1000_adapter *adapter); |
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145 static void e1000_setup_rctl(struct e1000_adapter *adapter); |
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146 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
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147 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); |
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148 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
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149 struct e1000_tx_ring *tx_ring); |
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150 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
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151 struct e1000_rx_ring *rx_ring); |
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152 static void e1000_set_multi(struct net_device *netdev); |
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153 static void e1000_update_phy_info(unsigned long data); |
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154 static void e1000_watchdog(unsigned long data); |
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155 static void e1000_82547_tx_fifo_stall(unsigned long data); |
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156 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); |
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157 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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158 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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159 static int e1000_set_mac(struct net_device *netdev, void *p); |
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160 static irqreturn_t e1000_intr(int irq, void *data); |
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161 static irqreturn_t e1000_intr_msi(int irq, void *data); |
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162 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter, |
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163 struct e1000_tx_ring *tx_ring); |
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164 #ifdef CONFIG_E1000_NAPI |
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165 static int e1000_clean(struct net_device *poll_dev, int *budget); |
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166 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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167 struct e1000_rx_ring *rx_ring, |
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168 int *work_done, int work_to_do); |
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169 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
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170 struct e1000_rx_ring *rx_ring, |
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171 int *work_done, int work_to_do); |
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172 #else |
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173 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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174 struct e1000_rx_ring *rx_ring); |
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175 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
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176 struct e1000_rx_ring *rx_ring); |
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177 #endif |
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178 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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179 struct e1000_rx_ring *rx_ring, |
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180 int cleaned_count); |
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181 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
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182 struct e1000_rx_ring *rx_ring, |
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183 int cleaned_count); |
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184 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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185 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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186 int cmd); |
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187 void e1000_set_ethtool_ops(struct net_device *netdev); |
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188 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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189 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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190 static void e1000_tx_timeout(struct net_device *dev); |
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191 static void e1000_reset_task(struct work_struct *work); |
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192 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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193 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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194 struct sk_buff *skb); |
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195 |
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196 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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197 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); |
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198 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); |
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199 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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200 |
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201 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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202 #ifdef CONFIG_PM |
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203 static int e1000_resume(struct pci_dev *pdev); |
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204 #endif |
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205 static void e1000_shutdown(struct pci_dev *pdev); |
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206 |
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207 #ifdef CONFIG_NET_POLL_CONTROLLER |
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208 /* for netdump / net console */ |
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209 static void e1000_netpoll (struct net_device *netdev); |
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210 #endif |
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211 |
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212 extern void e1000_check_options(struct e1000_adapter *adapter); |
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213 |
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214 #define COPYBREAK_DEFAULT 256 |
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215 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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216 module_param(copybreak, uint, 0644); |
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217 MODULE_PARM_DESC(copybreak, |
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218 "Maximum size of packet that is copied to a new buffer on receive"); |
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219 |
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220 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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221 pci_channel_state_t state); |
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222 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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223 static void e1000_io_resume(struct pci_dev *pdev); |
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224 |
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225 static struct pci_error_handlers e1000_err_handler = { |
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226 .error_detected = e1000_io_error_detected, |
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227 .slot_reset = e1000_io_slot_reset, |
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228 .resume = e1000_io_resume, |
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229 }; |
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230 |
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231 static struct pci_driver e1000_driver = { |
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232 .name = e1000_driver_name, |
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233 .id_table = e1000_pci_tbl, |
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234 .probe = e1000_probe, |
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235 .remove = __devexit_p(e1000_remove), |
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236 #ifdef CONFIG_PM |
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237 /* Power Managment Hooks */ |
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238 .suspend = e1000_suspend, |
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239 .resume = e1000_resume, |
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240 #endif |
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241 .shutdown = e1000_shutdown, |
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242 .err_handler = &e1000_err_handler |
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243 }; |
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244 |
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245 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
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246 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); |
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247 MODULE_LICENSE("GPL"); |
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248 MODULE_VERSION(DRV_VERSION); |
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249 |
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250 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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251 module_param(debug, int, 0); |
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252 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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253 |
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254 /** |
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255 * e1000_init_module - Driver Registration Routine |
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256 * |
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257 * e1000_init_module is the first routine called when the driver is |
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258 * loaded. All it does is register with the PCI subsystem. |
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259 **/ |
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260 |
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261 static int __init |
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262 e1000_init_module(void) |
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263 { |
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264 int ret; |
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265 printk(KERN_INFO "%s - version %s\n", |
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266 e1000_driver_string, e1000_driver_version); |
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267 |
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268 printk(KERN_INFO "%s\n", e1000_copyright); |
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269 |
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270 ret = pci_register_driver(&e1000_driver); |
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271 if (copybreak != COPYBREAK_DEFAULT) { |
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272 if (copybreak == 0) |
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273 printk(KERN_INFO "e1000: copybreak disabled\n"); |
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274 else |
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275 printk(KERN_INFO "e1000: copybreak enabled for " |
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276 "packets <= %u bytes\n", copybreak); |
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277 } |
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278 return ret; |
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279 } |
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280 |
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281 module_init(e1000_init_module); |
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282 |
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283 /** |
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284 * e1000_exit_module - Driver Exit Cleanup Routine |
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285 * |
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286 * e1000_exit_module is called just before the driver is removed |
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287 * from memory. |
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288 **/ |
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289 |
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290 static void __exit |
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291 e1000_exit_module(void) |
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292 { |
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293 pci_unregister_driver(&e1000_driver); |
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294 } |
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295 |
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296 module_exit(e1000_exit_module); |
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297 |
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298 static int e1000_request_irq(struct e1000_adapter *adapter) |
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299 { |
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300 struct net_device *netdev = adapter->netdev; |
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301 void (*handler) = &e1000_intr; |
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302 int irq_flags = IRQF_SHARED; |
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303 int err; |
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304 |
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305 if (adapter->hw.mac_type >= e1000_82571) { |
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306 adapter->have_msi = !pci_enable_msi(adapter->pdev); |
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307 if (adapter->have_msi) { |
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308 handler = &e1000_intr_msi; |
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309 irq_flags = 0; |
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310 } |
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311 } |
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312 |
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313 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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314 netdev); |
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315 if (err) { |
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316 if (adapter->have_msi) |
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317 pci_disable_msi(adapter->pdev); |
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318 DPRINTK(PROBE, ERR, |
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319 "Unable to allocate interrupt Error: %d\n", err); |
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320 } |
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321 |
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322 return err; |
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323 } |
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324 |
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325 static void e1000_free_irq(struct e1000_adapter *adapter) |
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326 { |
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327 struct net_device *netdev = adapter->netdev; |
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328 |
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329 free_irq(adapter->pdev->irq, netdev); |
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330 |
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331 if (adapter->have_msi) |
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332 pci_disable_msi(adapter->pdev); |
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333 } |
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334 |
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335 /** |
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336 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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337 * @adapter: board private structure |
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338 **/ |
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339 |
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340 static void |
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341 e1000_irq_disable(struct e1000_adapter *adapter) |
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342 { |
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343 atomic_inc(&adapter->irq_sem); |
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344 E1000_WRITE_REG(&adapter->hw, IMC, ~0); |
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345 E1000_WRITE_FLUSH(&adapter->hw); |
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346 synchronize_irq(adapter->pdev->irq); |
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347 } |
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348 |
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349 /** |
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350 * e1000_irq_enable - Enable default interrupt generation settings |
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351 * @adapter: board private structure |
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352 **/ |
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353 |
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354 static void |
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355 e1000_irq_enable(struct e1000_adapter *adapter) |
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356 { |
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357 if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
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358 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
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359 E1000_WRITE_FLUSH(&adapter->hw); |
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360 } |
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361 } |
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362 |
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363 static void |
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364 e1000_update_mng_vlan(struct e1000_adapter *adapter) |
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365 { |
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366 struct net_device *netdev = adapter->netdev; |
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367 uint16_t vid = adapter->hw.mng_cookie.vlan_id; |
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368 uint16_t old_vid = adapter->mng_vlan_id; |
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369 if (adapter->vlgrp) { |
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370 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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371 if (adapter->hw.mng_cookie.status & |
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372 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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373 e1000_vlan_rx_add_vid(netdev, vid); |
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374 adapter->mng_vlan_id = vid; |
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375 } else |
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376 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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377 |
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378 if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && |
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379 (vid != old_vid) && |
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380 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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381 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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382 } else |
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383 adapter->mng_vlan_id = vid; |
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384 } |
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385 } |
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386 |
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387 /** |
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388 * e1000_release_hw_control - release control of the h/w to f/w |
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389 * @adapter: address of board private structure |
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390 * |
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391 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
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392 * For ASF and Pass Through versions of f/w this means that the |
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393 * driver is no longer loaded. For AMT version (only with 82573) i |
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394 * of the f/w this means that the network i/f is closed. |
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395 * |
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396 **/ |
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397 |
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398 static void |
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399 e1000_release_hw_control(struct e1000_adapter *adapter) |
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400 { |
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401 uint32_t ctrl_ext; |
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402 uint32_t swsm; |
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403 |
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404 /* Let firmware taken over control of h/w */ |
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405 switch (adapter->hw.mac_type) { |
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406 case e1000_82573: |
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407 swsm = E1000_READ_REG(&adapter->hw, SWSM); |
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408 E1000_WRITE_REG(&adapter->hw, SWSM, |
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409 swsm & ~E1000_SWSM_DRV_LOAD); |
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410 break; |
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411 case e1000_82571: |
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412 case e1000_82572: |
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413 case e1000_80003es2lan: |
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414 case e1000_ich8lan: |
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415 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
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416 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, |
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417 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
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418 break; |
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419 default: |
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420 break; |
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421 } |
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422 } |
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423 |
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424 /** |
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425 * e1000_get_hw_control - get control of the h/w from f/w |
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426 * @adapter: address of board private structure |
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427 * |
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428 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
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429 * For ASF and Pass Through versions of f/w this means that |
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430 * the driver is loaded. For AMT version (only with 82573) |
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431 * of the f/w this means that the network i/f is open. |
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432 * |
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433 **/ |
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434 |
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435 static void |
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436 e1000_get_hw_control(struct e1000_adapter *adapter) |
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437 { |
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438 uint32_t ctrl_ext; |
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439 uint32_t swsm; |
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440 |
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441 /* Let firmware know the driver has taken over */ |
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442 switch (adapter->hw.mac_type) { |
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443 case e1000_82573: |
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444 swsm = E1000_READ_REG(&adapter->hw, SWSM); |
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445 E1000_WRITE_REG(&adapter->hw, SWSM, |
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446 swsm | E1000_SWSM_DRV_LOAD); |
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447 break; |
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448 case e1000_82571: |
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449 case e1000_82572: |
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450 case e1000_80003es2lan: |
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451 case e1000_ich8lan: |
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452 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
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453 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, |
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454 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
455 break; |
|
456 default: |
|
457 break; |
|
458 } |
|
459 } |
|
460 |
|
461 static void |
|
462 e1000_init_manageability(struct e1000_adapter *adapter) |
|
463 { |
|
464 if (adapter->en_mng_pt) { |
|
465 uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); |
|
466 |
|
467 /* disable hardware interception of ARP */ |
|
468 manc &= ~(E1000_MANC_ARP_EN); |
|
469 |
|
470 /* enable receiving management packets to the host */ |
|
471 /* this will probably generate destination unreachable messages |
|
472 * from the host OS, but the packets will be handled on SMBUS */ |
|
473 if (adapter->hw.has_manc2h) { |
|
474 uint32_t manc2h = E1000_READ_REG(&adapter->hw, MANC2H); |
|
475 |
|
476 manc |= E1000_MANC_EN_MNG2HOST; |
|
477 #define E1000_MNG2HOST_PORT_623 (1 << 5) |
|
478 #define E1000_MNG2HOST_PORT_664 (1 << 6) |
|
479 manc2h |= E1000_MNG2HOST_PORT_623; |
|
480 manc2h |= E1000_MNG2HOST_PORT_664; |
|
481 E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h); |
|
482 } |
|
483 |
|
484 E1000_WRITE_REG(&adapter->hw, MANC, manc); |
|
485 } |
|
486 } |
|
487 |
|
488 static void |
|
489 e1000_release_manageability(struct e1000_adapter *adapter) |
|
490 { |
|
491 if (adapter->en_mng_pt) { |
|
492 uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); |
|
493 |
|
494 /* re-enable hardware interception of ARP */ |
|
495 manc |= E1000_MANC_ARP_EN; |
|
496 |
|
497 if (adapter->hw.has_manc2h) |
|
498 manc &= ~E1000_MANC_EN_MNG2HOST; |
|
499 |
|
500 /* don't explicitly have to mess with MANC2H since |
|
501 * MANC has an enable disable that gates MANC2H */ |
|
502 |
|
503 E1000_WRITE_REG(&adapter->hw, MANC, manc); |
|
504 } |
|
505 } |
|
506 |
|
507 /** |
|
508 * e1000_configure - configure the hardware for RX and TX |
|
509 * @adapter = private board structure |
|
510 **/ |
|
511 static void e1000_configure(struct e1000_adapter *adapter) |
|
512 { |
|
513 struct net_device *netdev = adapter->netdev; |
|
514 int i; |
|
515 |
|
516 e1000_set_multi(netdev); |
|
517 |
|
518 e1000_restore_vlan(adapter); |
|
519 e1000_init_manageability(adapter); |
|
520 |
|
521 e1000_configure_tx(adapter); |
|
522 e1000_setup_rctl(adapter); |
|
523 e1000_configure_rx(adapter); |
|
524 /* call E1000_DESC_UNUSED which always leaves |
|
525 * at least 1 descriptor unused to make sure |
|
526 * next_to_use != next_to_clean */ |
|
527 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
528 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
|
529 adapter->alloc_rx_buf(adapter, ring, |
|
530 E1000_DESC_UNUSED(ring)); |
|
531 } |
|
532 |
|
533 adapter->tx_queue_len = netdev->tx_queue_len; |
|
534 } |
|
535 |
|
536 int e1000_up(struct e1000_adapter *adapter) |
|
537 { |
|
538 /* hardware has been reset, we need to reload some things */ |
|
539 e1000_configure(adapter); |
|
540 |
|
541 clear_bit(__E1000_DOWN, &adapter->flags); |
|
542 |
|
543 #ifdef CONFIG_E1000_NAPI |
|
544 netif_poll_enable(adapter->netdev); |
|
545 #endif |
|
546 e1000_irq_enable(adapter); |
|
547 |
|
548 /* fire a link change interrupt to start the watchdog */ |
|
549 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); |
|
550 return 0; |
|
551 } |
|
552 |
|
553 /** |
|
554 * e1000_power_up_phy - restore link in case the phy was powered down |
|
555 * @adapter: address of board private structure |
|
556 * |
|
557 * The phy may be powered down to save power and turn off link when the |
|
558 * driver is unloaded and wake on lan is not enabled (among others) |
|
559 * *** this routine MUST be followed by a call to e1000_reset *** |
|
560 * |
|
561 **/ |
|
562 |
|
563 void e1000_power_up_phy(struct e1000_adapter *adapter) |
|
564 { |
|
565 uint16_t mii_reg = 0; |
|
566 |
|
567 /* Just clear the power down bit to wake the phy back up */ |
|
568 if (adapter->hw.media_type == e1000_media_type_copper) { |
|
569 /* according to the manual, the phy will retain its |
|
570 * settings across a power-down/up cycle */ |
|
571 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
|
572 mii_reg &= ~MII_CR_POWER_DOWN; |
|
573 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); |
|
574 } |
|
575 } |
|
576 |
|
577 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
578 { |
|
579 /* Power down the PHY so no link is implied when interface is down * |
|
580 * The PHY cannot be powered down if any of the following is TRUE * |
|
581 * (a) WoL is enabled |
|
582 * (b) AMT is active |
|
583 * (c) SoL/IDER session is active */ |
|
584 if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && |
|
585 adapter->hw.media_type == e1000_media_type_copper) { |
|
586 uint16_t mii_reg = 0; |
|
587 |
|
588 switch (adapter->hw.mac_type) { |
|
589 case e1000_82540: |
|
590 case e1000_82545: |
|
591 case e1000_82545_rev_3: |
|
592 case e1000_82546: |
|
593 case e1000_82546_rev_3: |
|
594 case e1000_82541: |
|
595 case e1000_82541_rev_2: |
|
596 case e1000_82547: |
|
597 case e1000_82547_rev_2: |
|
598 if (E1000_READ_REG(&adapter->hw, MANC) & |
|
599 E1000_MANC_SMBUS_EN) |
|
600 goto out; |
|
601 break; |
|
602 case e1000_82571: |
|
603 case e1000_82572: |
|
604 case e1000_82573: |
|
605 case e1000_80003es2lan: |
|
606 case e1000_ich8lan: |
|
607 if (e1000_check_mng_mode(&adapter->hw) || |
|
608 e1000_check_phy_reset_block(&adapter->hw)) |
|
609 goto out; |
|
610 break; |
|
611 default: |
|
612 goto out; |
|
613 } |
|
614 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
|
615 mii_reg |= MII_CR_POWER_DOWN; |
|
616 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); |
|
617 mdelay(1); |
|
618 } |
|
619 out: |
|
620 return; |
|
621 } |
|
622 |
|
623 void |
|
624 e1000_down(struct e1000_adapter *adapter) |
|
625 { |
|
626 struct net_device *netdev = adapter->netdev; |
|
627 |
|
628 /* signal that we're down so the interrupt handler does not |
|
629 * reschedule our watchdog timer */ |
|
630 set_bit(__E1000_DOWN, &adapter->flags); |
|
631 |
|
632 #ifdef CONFIG_E1000_NAPI |
|
633 netif_poll_disable(netdev); |
|
634 #endif |
|
635 e1000_irq_disable(adapter); |
|
636 |
|
637 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
638 del_timer_sync(&adapter->watchdog_timer); |
|
639 del_timer_sync(&adapter->phy_info_timer); |
|
640 |
|
641 netdev->tx_queue_len = adapter->tx_queue_len; |
|
642 adapter->link_speed = 0; |
|
643 adapter->link_duplex = 0; |
|
644 netif_carrier_off(netdev); |
|
645 netif_stop_queue(netdev); |
|
646 |
|
647 e1000_reset(adapter); |
|
648 e1000_clean_all_tx_rings(adapter); |
|
649 e1000_clean_all_rx_rings(adapter); |
|
650 } |
|
651 |
|
652 void |
|
653 e1000_reinit_locked(struct e1000_adapter *adapter) |
|
654 { |
|
655 WARN_ON(in_interrupt()); |
|
656 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
657 msleep(1); |
|
658 e1000_down(adapter); |
|
659 e1000_up(adapter); |
|
660 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
661 } |
|
662 |
|
663 void |
|
664 e1000_reset(struct e1000_adapter *adapter) |
|
665 { |
|
666 uint32_t pba = 0, tx_space, min_tx_space, min_rx_space; |
|
667 uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
|
668 boolean_t legacy_pba_adjust = FALSE; |
|
669 |
|
670 /* Repartition Pba for greater than 9k mtu |
|
671 * To take effect CTRL.RST is required. |
|
672 */ |
|
673 |
|
674 switch (adapter->hw.mac_type) { |
|
675 case e1000_82542_rev2_0: |
|
676 case e1000_82542_rev2_1: |
|
677 case e1000_82543: |
|
678 case e1000_82544: |
|
679 case e1000_82540: |
|
680 case e1000_82541: |
|
681 case e1000_82541_rev_2: |
|
682 legacy_pba_adjust = TRUE; |
|
683 pba = E1000_PBA_48K; |
|
684 break; |
|
685 case e1000_82545: |
|
686 case e1000_82545_rev_3: |
|
687 case e1000_82546: |
|
688 case e1000_82546_rev_3: |
|
689 pba = E1000_PBA_48K; |
|
690 break; |
|
691 case e1000_82547: |
|
692 case e1000_82547_rev_2: |
|
693 legacy_pba_adjust = TRUE; |
|
694 pba = E1000_PBA_30K; |
|
695 break; |
|
696 case e1000_82571: |
|
697 case e1000_82572: |
|
698 case e1000_80003es2lan: |
|
699 pba = E1000_PBA_38K; |
|
700 break; |
|
701 case e1000_82573: |
|
702 pba = E1000_PBA_20K; |
|
703 break; |
|
704 case e1000_ich8lan: |
|
705 pba = E1000_PBA_8K; |
|
706 case e1000_undefined: |
|
707 case e1000_num_macs: |
|
708 break; |
|
709 } |
|
710 |
|
711 if (legacy_pba_adjust == TRUE) { |
|
712 if (adapter->netdev->mtu > E1000_RXBUFFER_8192) |
|
713 pba -= 8; /* allocate more FIFO for Tx */ |
|
714 |
|
715 if (adapter->hw.mac_type == e1000_82547) { |
|
716 adapter->tx_fifo_head = 0; |
|
717 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
718 adapter->tx_fifo_size = |
|
719 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
720 atomic_set(&adapter->tx_fifo_stall, 0); |
|
721 } |
|
722 } else if (adapter->hw.max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
723 /* adjust PBA for jumbo frames */ |
|
724 E1000_WRITE_REG(&adapter->hw, PBA, pba); |
|
725 |
|
726 /* To maintain wire speed transmits, the Tx FIFO should be |
|
727 * large enough to accomodate two full transmit packets, |
|
728 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
729 * the Rx FIFO should be large enough to accomodate at least |
|
730 * one full receive packet and is similarly rounded up and |
|
731 * expressed in KB. */ |
|
732 pba = E1000_READ_REG(&adapter->hw, PBA); |
|
733 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
734 tx_space = pba >> 16; |
|
735 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
736 pba &= 0xffff; |
|
737 /* don't include ethernet FCS because hardware appends/strips */ |
|
738 min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE + |
|
739 VLAN_TAG_SIZE; |
|
740 min_tx_space = min_rx_space; |
|
741 min_tx_space *= 2; |
|
742 min_tx_space = ALIGN(min_tx_space, 1024); |
|
743 min_tx_space >>= 10; |
|
744 min_rx_space = ALIGN(min_rx_space, 1024); |
|
745 min_rx_space >>= 10; |
|
746 |
|
747 /* If current Tx allocation is less than the min Tx FIFO size, |
|
748 * and the min Tx FIFO size is less than the current Rx FIFO |
|
749 * allocation, take space away from current Rx allocation */ |
|
750 if (tx_space < min_tx_space && |
|
751 ((min_tx_space - tx_space) < pba)) { |
|
752 pba = pba - (min_tx_space - tx_space); |
|
753 |
|
754 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
755 switch (adapter->hw.mac_type) { |
|
756 case e1000_82545 ... e1000_82546_rev_3: |
|
757 pba &= ~(E1000_PBA_8K - 1); |
|
758 break; |
|
759 default: |
|
760 break; |
|
761 } |
|
762 |
|
763 /* if short on rx space, rx wins and must trump tx |
|
764 * adjustment or use Early Receive if available */ |
|
765 if (pba < min_rx_space) { |
|
766 switch (adapter->hw.mac_type) { |
|
767 case e1000_82573: |
|
768 /* ERT enabled in e1000_configure_rx */ |
|
769 break; |
|
770 default: |
|
771 pba = min_rx_space; |
|
772 break; |
|
773 } |
|
774 } |
|
775 } |
|
776 } |
|
777 |
|
778 E1000_WRITE_REG(&adapter->hw, PBA, pba); |
|
779 |
|
780 /* flow control settings */ |
|
781 /* Set the FC high water mark to 90% of the FIFO size. |
|
782 * Required to clear last 3 LSB */ |
|
783 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; |
|
784 /* We can't use 90% on small FIFOs because the remainder |
|
785 * would be less than 1 full frame. In this case, we size |
|
786 * it to allow at least a full frame above the high water |
|
787 * mark. */ |
|
788 if (pba < E1000_PBA_16K) |
|
789 fc_high_water_mark = (pba * 1024) - 1600; |
|
790 |
|
791 adapter->hw.fc_high_water = fc_high_water_mark; |
|
792 adapter->hw.fc_low_water = fc_high_water_mark - 8; |
|
793 if (adapter->hw.mac_type == e1000_80003es2lan) |
|
794 adapter->hw.fc_pause_time = 0xFFFF; |
|
795 else |
|
796 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; |
|
797 adapter->hw.fc_send_xon = 1; |
|
798 adapter->hw.fc = adapter->hw.original_fc; |
|
799 |
|
800 /* Allow time for pending master requests to run */ |
|
801 e1000_reset_hw(&adapter->hw); |
|
802 if (adapter->hw.mac_type >= e1000_82544) |
|
803 E1000_WRITE_REG(&adapter->hw, WUC, 0); |
|
804 |
|
805 if (e1000_init_hw(&adapter->hw)) |
|
806 DPRINTK(PROBE, ERR, "Hardware Error\n"); |
|
807 e1000_update_mng_vlan(adapter); |
|
808 |
|
809 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
810 if (adapter->hw.mac_type >= e1000_82544 && |
|
811 adapter->hw.mac_type <= e1000_82547_rev_2 && |
|
812 adapter->hw.autoneg == 1 && |
|
813 adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) { |
|
814 uint32_t ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
815 /* clear phy power management bit if we are in gig only mode, |
|
816 * which if enabled will attempt negotiation to 100Mb, which |
|
817 * can cause a loss of link at power off or driver unload */ |
|
818 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
819 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
820 } |
|
821 |
|
822 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
823 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); |
|
824 |
|
825 e1000_reset_adaptive(&adapter->hw); |
|
826 e1000_phy_get_info(&adapter->hw, &adapter->phy_info); |
|
827 |
|
828 if (!adapter->smart_power_down && |
|
829 (adapter->hw.mac_type == e1000_82571 || |
|
830 adapter->hw.mac_type == e1000_82572)) { |
|
831 uint16_t phy_data = 0; |
|
832 /* speed up time to link by disabling smart power down, ignore |
|
833 * the return value of this function because there is nothing |
|
834 * different we would do if it failed */ |
|
835 e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, |
|
836 &phy_data); |
|
837 phy_data &= ~IGP02E1000_PM_SPD; |
|
838 e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, |
|
839 phy_data); |
|
840 } |
|
841 |
|
842 e1000_release_manageability(adapter); |
|
843 } |
|
844 |
|
845 /** |
|
846 * e1000_probe - Device Initialization Routine |
|
847 * @pdev: PCI device information struct |
|
848 * @ent: entry in e1000_pci_tbl |
|
849 * |
|
850 * Returns 0 on success, negative on failure |
|
851 * |
|
852 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
853 * The OS initialization, configuring of the adapter private structure, |
|
854 * and a hardware reset occur. |
|
855 **/ |
|
856 |
|
857 static int __devinit |
|
858 e1000_probe(struct pci_dev *pdev, |
|
859 const struct pci_device_id *ent) |
|
860 { |
|
861 struct net_device *netdev; |
|
862 struct e1000_adapter *adapter; |
|
863 unsigned long mmio_start, mmio_len; |
|
864 unsigned long flash_start, flash_len; |
|
865 |
|
866 static int cards_found = 0; |
|
867 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
868 int i, err, pci_using_dac; |
|
869 uint16_t eeprom_data = 0; |
|
870 uint16_t eeprom_apme_mask = E1000_EEPROM_APME; |
|
871 if ((err = pci_enable_device(pdev))) |
|
872 return err; |
|
873 |
|
874 if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
|
875 !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { |
|
876 pci_using_dac = 1; |
|
877 } else { |
|
878 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) && |
|
879 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { |
|
880 E1000_ERR("No usable DMA configuration, aborting\n"); |
|
881 goto err_dma; |
|
882 } |
|
883 pci_using_dac = 0; |
|
884 } |
|
885 |
|
886 if ((err = pci_request_regions(pdev, e1000_driver_name))) |
|
887 goto err_pci_reg; |
|
888 |
|
889 pci_set_master(pdev); |
|
890 |
|
891 err = -ENOMEM; |
|
892 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
893 if (!netdev) |
|
894 goto err_alloc_etherdev; |
|
895 |
|
896 SET_MODULE_OWNER(netdev); |
|
897 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
898 |
|
899 pci_set_drvdata(pdev, netdev); |
|
900 adapter = netdev_priv(netdev); |
|
901 adapter->netdev = netdev; |
|
902 adapter->pdev = pdev; |
|
903 adapter->hw.back = adapter; |
|
904 adapter->msg_enable = (1 << debug) - 1; |
|
905 |
|
906 mmio_start = pci_resource_start(pdev, BAR_0); |
|
907 mmio_len = pci_resource_len(pdev, BAR_0); |
|
908 |
|
909 err = -EIO; |
|
910 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
911 if (!adapter->hw.hw_addr) |
|
912 goto err_ioremap; |
|
913 |
|
914 for (i = BAR_1; i <= BAR_5; i++) { |
|
915 if (pci_resource_len(pdev, i) == 0) |
|
916 continue; |
|
917 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
918 adapter->hw.io_base = pci_resource_start(pdev, i); |
|
919 break; |
|
920 } |
|
921 } |
|
922 |
|
923 netdev->open = &e1000_open; |
|
924 netdev->stop = &e1000_close; |
|
925 netdev->hard_start_xmit = &e1000_xmit_frame; |
|
926 netdev->get_stats = &e1000_get_stats; |
|
927 netdev->set_multicast_list = &e1000_set_multi; |
|
928 netdev->set_mac_address = &e1000_set_mac; |
|
929 netdev->change_mtu = &e1000_change_mtu; |
|
930 netdev->do_ioctl = &e1000_ioctl; |
|
931 e1000_set_ethtool_ops(netdev); |
|
932 netdev->tx_timeout = &e1000_tx_timeout; |
|
933 netdev->watchdog_timeo = 5 * HZ; |
|
934 #ifdef CONFIG_E1000_NAPI |
|
935 netdev->poll = &e1000_clean; |
|
936 netdev->weight = 64; |
|
937 #endif |
|
938 netdev->vlan_rx_register = e1000_vlan_rx_register; |
|
939 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; |
|
940 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; |
|
941 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
942 netdev->poll_controller = e1000_netpoll; |
|
943 #endif |
|
944 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
945 |
|
946 netdev->mem_start = mmio_start; |
|
947 netdev->mem_end = mmio_start + mmio_len; |
|
948 netdev->base_addr = adapter->hw.io_base; |
|
949 |
|
950 adapter->bd_number = cards_found; |
|
951 |
|
952 /* setup the private structure */ |
|
953 |
|
954 if ((err = e1000_sw_init(adapter))) |
|
955 goto err_sw_init; |
|
956 |
|
957 err = -EIO; |
|
958 /* Flash BAR mapping must happen after e1000_sw_init |
|
959 * because it depends on mac_type */ |
|
960 if ((adapter->hw.mac_type == e1000_ich8lan) && |
|
961 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
962 flash_start = pci_resource_start(pdev, 1); |
|
963 flash_len = pci_resource_len(pdev, 1); |
|
964 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
965 if (!adapter->hw.flash_address) |
|
966 goto err_flashmap; |
|
967 } |
|
968 |
|
969 if (e1000_check_phy_reset_block(&adapter->hw)) |
|
970 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
|
971 |
|
972 if (adapter->hw.mac_type >= e1000_82543) { |
|
973 netdev->features = NETIF_F_SG | |
|
974 NETIF_F_HW_CSUM | |
|
975 NETIF_F_HW_VLAN_TX | |
|
976 NETIF_F_HW_VLAN_RX | |
|
977 NETIF_F_HW_VLAN_FILTER; |
|
978 if (adapter->hw.mac_type == e1000_ich8lan) |
|
979 netdev->features &= ~NETIF_F_HW_VLAN_FILTER; |
|
980 } |
|
981 |
|
982 if ((adapter->hw.mac_type >= e1000_82544) && |
|
983 (adapter->hw.mac_type != e1000_82547)) |
|
984 netdev->features |= NETIF_F_TSO; |
|
985 |
|
986 if (adapter->hw.mac_type > e1000_82547_rev_2) |
|
987 netdev->features |= NETIF_F_TSO6; |
|
988 if (pci_using_dac) |
|
989 netdev->features |= NETIF_F_HIGHDMA; |
|
990 |
|
991 netdev->features |= NETIF_F_LLTX; |
|
992 |
|
993 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
|
994 |
|
995 /* initialize eeprom parameters */ |
|
996 |
|
997 if (e1000_init_eeprom_params(&adapter->hw)) { |
|
998 E1000_ERR("EEPROM initialization failed\n"); |
|
999 goto err_eeprom; |
|
1000 } |
|
1001 |
|
1002 /* before reading the EEPROM, reset the controller to |
|
1003 * put the device in a known good starting state */ |
|
1004 |
|
1005 e1000_reset_hw(&adapter->hw); |
|
1006 |
|
1007 /* make sure the EEPROM is good */ |
|
1008 |
|
1009 if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
|
1010 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
|
1011 goto err_eeprom; |
|
1012 } |
|
1013 |
|
1014 /* copy the MAC address out of the EEPROM */ |
|
1015 |
|
1016 if (e1000_read_mac_addr(&adapter->hw)) |
|
1017 DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
|
1018 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); |
|
1019 memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
|
1020 |
|
1021 if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
1022 DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
|
1023 goto err_eeprom; |
|
1024 } |
|
1025 |
|
1026 e1000_get_bus_info(&adapter->hw); |
|
1027 |
|
1028 init_timer(&adapter->tx_fifo_stall_timer); |
|
1029 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; |
|
1030 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; |
|
1031 |
|
1032 init_timer(&adapter->watchdog_timer); |
|
1033 adapter->watchdog_timer.function = &e1000_watchdog; |
|
1034 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
1035 |
|
1036 init_timer(&adapter->phy_info_timer); |
|
1037 adapter->phy_info_timer.function = &e1000_update_phy_info; |
|
1038 adapter->phy_info_timer.data = (unsigned long) adapter; |
|
1039 |
|
1040 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
1041 |
|
1042 e1000_check_options(adapter); |
|
1043 |
|
1044 /* Initial Wake on LAN setting |
|
1045 * If APM wake is enabled in the EEPROM, |
|
1046 * enable the ACPI Magic Packet filter |
|
1047 */ |
|
1048 |
|
1049 switch (adapter->hw.mac_type) { |
|
1050 case e1000_82542_rev2_0: |
|
1051 case e1000_82542_rev2_1: |
|
1052 case e1000_82543: |
|
1053 break; |
|
1054 case e1000_82544: |
|
1055 e1000_read_eeprom(&adapter->hw, |
|
1056 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
1057 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
1058 break; |
|
1059 case e1000_ich8lan: |
|
1060 e1000_read_eeprom(&adapter->hw, |
|
1061 EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); |
|
1062 eeprom_apme_mask = E1000_EEPROM_ICH8_APME; |
|
1063 break; |
|
1064 case e1000_82546: |
|
1065 case e1000_82546_rev_3: |
|
1066 case e1000_82571: |
|
1067 case e1000_80003es2lan: |
|
1068 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
|
1069 e1000_read_eeprom(&adapter->hw, |
|
1070 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
1071 break; |
|
1072 } |
|
1073 /* Fall Through */ |
|
1074 default: |
|
1075 e1000_read_eeprom(&adapter->hw, |
|
1076 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1077 break; |
|
1078 } |
|
1079 if (eeprom_data & eeprom_apme_mask) |
|
1080 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1081 |
|
1082 /* now that we have the eeprom settings, apply the special cases |
|
1083 * where the eeprom may be wrong or the board simply won't support |
|
1084 * wake on lan on a particular port */ |
|
1085 switch (pdev->device) { |
|
1086 case E1000_DEV_ID_82546GB_PCIE: |
|
1087 adapter->eeprom_wol = 0; |
|
1088 break; |
|
1089 case E1000_DEV_ID_82546EB_FIBER: |
|
1090 case E1000_DEV_ID_82546GB_FIBER: |
|
1091 case E1000_DEV_ID_82571EB_FIBER: |
|
1092 /* Wake events only supported on port A for dual fiber |
|
1093 * regardless of eeprom setting */ |
|
1094 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) |
|
1095 adapter->eeprom_wol = 0; |
|
1096 break; |
|
1097 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1098 case E1000_DEV_ID_82571EB_QUAD_COPPER: |
|
1099 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: |
|
1100 /* if quad port adapter, disable WoL on all but port A */ |
|
1101 if (global_quad_port_a != 0) |
|
1102 adapter->eeprom_wol = 0; |
|
1103 else |
|
1104 adapter->quad_port_a = 1; |
|
1105 /* Reset for multiple quad port adapters */ |
|
1106 if (++global_quad_port_a == 4) |
|
1107 global_quad_port_a = 0; |
|
1108 break; |
|
1109 } |
|
1110 |
|
1111 /* initialize the wol settings based on the eeprom settings */ |
|
1112 adapter->wol = adapter->eeprom_wol; |
|
1113 |
|
1114 /* print bus type/speed/width info */ |
|
1115 { |
|
1116 struct e1000_hw *hw = &adapter->hw; |
|
1117 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", |
|
1118 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : |
|
1119 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), |
|
1120 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : |
|
1121 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : |
|
1122 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : |
|
1123 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : |
|
1124 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), |
|
1125 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : |
|
1126 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : |
|
1127 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : |
|
1128 "32-bit")); |
|
1129 } |
|
1130 |
|
1131 for (i = 0; i < 6; i++) |
|
1132 printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); |
|
1133 |
|
1134 /* reset the hardware with the new settings */ |
|
1135 e1000_reset(adapter); |
|
1136 |
|
1137 /* If the controller is 82573 and f/w is AMT, do not set |
|
1138 * DRV_LOAD until the interface is up. For all other cases, |
|
1139 * let the f/w know that the h/w is now under the control |
|
1140 * of the driver. */ |
|
1141 if (adapter->hw.mac_type != e1000_82573 || |
|
1142 !e1000_check_mng_mode(&adapter->hw)) |
|
1143 e1000_get_hw_control(adapter); |
|
1144 |
|
1145 /* tell the stack to leave us alone until e1000_open() is called */ |
|
1146 netif_carrier_off(netdev); |
|
1147 netif_stop_queue(netdev); |
|
1148 #ifdef CONFIG_E1000_NAPI |
|
1149 netif_poll_disable(netdev); |
|
1150 #endif |
|
1151 |
|
1152 strcpy(netdev->name, "eth%d"); |
|
1153 if ((err = register_netdev(netdev))) |
|
1154 goto err_register; |
|
1155 |
|
1156 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
|
1157 |
|
1158 cards_found++; |
|
1159 return 0; |
|
1160 |
|
1161 err_register: |
|
1162 e1000_release_hw_control(adapter); |
|
1163 err_eeprom: |
|
1164 if (!e1000_check_phy_reset_block(&adapter->hw)) |
|
1165 e1000_phy_hw_reset(&adapter->hw); |
|
1166 |
|
1167 if (adapter->hw.flash_address) |
|
1168 iounmap(adapter->hw.flash_address); |
|
1169 err_flashmap: |
|
1170 #ifdef CONFIG_E1000_NAPI |
|
1171 for (i = 0; i < adapter->num_rx_queues; i++) |
|
1172 dev_put(&adapter->polling_netdev[i]); |
|
1173 #endif |
|
1174 |
|
1175 kfree(adapter->tx_ring); |
|
1176 kfree(adapter->rx_ring); |
|
1177 #ifdef CONFIG_E1000_NAPI |
|
1178 kfree(adapter->polling_netdev); |
|
1179 #endif |
|
1180 err_sw_init: |
|
1181 iounmap(adapter->hw.hw_addr); |
|
1182 err_ioremap: |
|
1183 free_netdev(netdev); |
|
1184 err_alloc_etherdev: |
|
1185 pci_release_regions(pdev); |
|
1186 err_pci_reg: |
|
1187 err_dma: |
|
1188 pci_disable_device(pdev); |
|
1189 return err; |
|
1190 } |
|
1191 |
|
1192 /** |
|
1193 * e1000_remove - Device Removal Routine |
|
1194 * @pdev: PCI device information struct |
|
1195 * |
|
1196 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1197 * that it should release a PCI device. The could be caused by a |
|
1198 * Hot-Plug event, or because the driver is going to be removed from |
|
1199 * memory. |
|
1200 **/ |
|
1201 |
|
1202 static void __devexit |
|
1203 e1000_remove(struct pci_dev *pdev) |
|
1204 { |
|
1205 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1206 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1207 #ifdef CONFIG_E1000_NAPI |
|
1208 int i; |
|
1209 #endif |
|
1210 |
|
1211 cancel_work_sync(&adapter->reset_task); |
|
1212 |
|
1213 e1000_release_manageability(adapter); |
|
1214 |
|
1215 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
1216 * would have already happened in close and is redundant. */ |
|
1217 e1000_release_hw_control(adapter); |
|
1218 |
|
1219 unregister_netdev(netdev); |
|
1220 #ifdef CONFIG_E1000_NAPI |
|
1221 for (i = 0; i < adapter->num_rx_queues; i++) |
|
1222 dev_put(&adapter->polling_netdev[i]); |
|
1223 #endif |
|
1224 |
|
1225 if (!e1000_check_phy_reset_block(&adapter->hw)) |
|
1226 e1000_phy_hw_reset(&adapter->hw); |
|
1227 |
|
1228 kfree(adapter->tx_ring); |
|
1229 kfree(adapter->rx_ring); |
|
1230 #ifdef CONFIG_E1000_NAPI |
|
1231 kfree(adapter->polling_netdev); |
|
1232 #endif |
|
1233 |
|
1234 iounmap(adapter->hw.hw_addr); |
|
1235 if (adapter->hw.flash_address) |
|
1236 iounmap(adapter->hw.flash_address); |
|
1237 pci_release_regions(pdev); |
|
1238 |
|
1239 free_netdev(netdev); |
|
1240 |
|
1241 pci_disable_device(pdev); |
|
1242 } |
|
1243 |
|
1244 /** |
|
1245 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1246 * @adapter: board private structure to initialize |
|
1247 * |
|
1248 * e1000_sw_init initializes the Adapter private data structure. |
|
1249 * Fields are initialized based on PCI device information and |
|
1250 * OS network device settings (MTU size). |
|
1251 **/ |
|
1252 |
|
1253 static int __devinit |
|
1254 e1000_sw_init(struct e1000_adapter *adapter) |
|
1255 { |
|
1256 struct e1000_hw *hw = &adapter->hw; |
|
1257 struct net_device *netdev = adapter->netdev; |
|
1258 struct pci_dev *pdev = adapter->pdev; |
|
1259 #ifdef CONFIG_E1000_NAPI |
|
1260 int i; |
|
1261 #endif |
|
1262 |
|
1263 /* PCI config space info */ |
|
1264 |
|
1265 hw->vendor_id = pdev->vendor; |
|
1266 hw->device_id = pdev->device; |
|
1267 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
1268 hw->subsystem_id = pdev->subsystem_device; |
|
1269 |
|
1270 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); |
|
1271 |
|
1272 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
1273 |
|
1274 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1275 adapter->rx_ps_bsize0 = E1000_RXBUFFER_128; |
|
1276 hw->max_frame_size = netdev->mtu + |
|
1277 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
1278 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
1279 |
|
1280 /* identify the MAC */ |
|
1281 |
|
1282 if (e1000_set_mac_type(hw)) { |
|
1283 DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
|
1284 return -EIO; |
|
1285 } |
|
1286 |
|
1287 switch (hw->mac_type) { |
|
1288 default: |
|
1289 break; |
|
1290 case e1000_82541: |
|
1291 case e1000_82547: |
|
1292 case e1000_82541_rev_2: |
|
1293 case e1000_82547_rev_2: |
|
1294 hw->phy_init_script = 1; |
|
1295 break; |
|
1296 } |
|
1297 |
|
1298 e1000_set_media_type(hw); |
|
1299 |
|
1300 hw->wait_autoneg_complete = FALSE; |
|
1301 hw->tbi_compatibility_en = TRUE; |
|
1302 hw->adaptive_ifs = TRUE; |
|
1303 |
|
1304 /* Copper options */ |
|
1305 |
|
1306 if (hw->media_type == e1000_media_type_copper) { |
|
1307 hw->mdix = AUTO_ALL_MODES; |
|
1308 hw->disable_polarity_correction = FALSE; |
|
1309 hw->master_slave = E1000_MASTER_SLAVE; |
|
1310 } |
|
1311 |
|
1312 adapter->num_tx_queues = 1; |
|
1313 adapter->num_rx_queues = 1; |
|
1314 |
|
1315 if (e1000_alloc_queues(adapter)) { |
|
1316 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); |
|
1317 return -ENOMEM; |
|
1318 } |
|
1319 |
|
1320 #ifdef CONFIG_E1000_NAPI |
|
1321 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1322 adapter->polling_netdev[i].priv = adapter; |
|
1323 adapter->polling_netdev[i].poll = &e1000_clean; |
|
1324 adapter->polling_netdev[i].weight = 64; |
|
1325 dev_hold(&adapter->polling_netdev[i]); |
|
1326 set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); |
|
1327 } |
|
1328 spin_lock_init(&adapter->tx_queue_lock); |
|
1329 #endif |
|
1330 |
|
1331 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1332 atomic_set(&adapter->irq_sem, 0); |
|
1333 e1000_irq_disable(adapter); |
|
1334 |
|
1335 spin_lock_init(&adapter->stats_lock); |
|
1336 |
|
1337 set_bit(__E1000_DOWN, &adapter->flags); |
|
1338 |
|
1339 return 0; |
|
1340 } |
|
1341 |
|
1342 /** |
|
1343 * e1000_alloc_queues - Allocate memory for all rings |
|
1344 * @adapter: board private structure to initialize |
|
1345 * |
|
1346 * We allocate one ring per queue at run-time since we don't know the |
|
1347 * number of queues at compile-time. The polling_netdev array is |
|
1348 * intended for Multiqueue, but should work fine with a single queue. |
|
1349 **/ |
|
1350 |
|
1351 static int __devinit |
|
1352 e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1353 { |
|
1354 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1355 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1356 if (!adapter->tx_ring) |
|
1357 return -ENOMEM; |
|
1358 |
|
1359 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1360 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1361 if (!adapter->rx_ring) { |
|
1362 kfree(adapter->tx_ring); |
|
1363 return -ENOMEM; |
|
1364 } |
|
1365 |
|
1366 #ifdef CONFIG_E1000_NAPI |
|
1367 adapter->polling_netdev = kcalloc(adapter->num_rx_queues, |
|
1368 sizeof(struct net_device), |
|
1369 GFP_KERNEL); |
|
1370 if (!adapter->polling_netdev) { |
|
1371 kfree(adapter->tx_ring); |
|
1372 kfree(adapter->rx_ring); |
|
1373 return -ENOMEM; |
|
1374 } |
|
1375 #endif |
|
1376 |
|
1377 return E1000_SUCCESS; |
|
1378 } |
|
1379 |
|
1380 /** |
|
1381 * e1000_open - Called when a network interface is made active |
|
1382 * @netdev: network interface device structure |
|
1383 * |
|
1384 * Returns 0 on success, negative value on failure |
|
1385 * |
|
1386 * The open entry point is called when a network interface is made |
|
1387 * active by the system (IFF_UP). At this point all resources needed |
|
1388 * for transmit and receive operations are allocated, the interrupt |
|
1389 * handler is registered with the OS, the watchdog timer is started, |
|
1390 * and the stack is notified that the interface is ready. |
|
1391 **/ |
|
1392 |
|
1393 static int |
|
1394 e1000_open(struct net_device *netdev) |
|
1395 { |
|
1396 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1397 int err; |
|
1398 |
|
1399 /* disallow open during test */ |
|
1400 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1401 return -EBUSY; |
|
1402 |
|
1403 /* allocate transmit descriptors */ |
|
1404 err = e1000_setup_all_tx_resources(adapter); |
|
1405 if (err) |
|
1406 goto err_setup_tx; |
|
1407 |
|
1408 /* allocate receive descriptors */ |
|
1409 err = e1000_setup_all_rx_resources(adapter); |
|
1410 if (err) |
|
1411 goto err_setup_rx; |
|
1412 |
|
1413 e1000_power_up_phy(adapter); |
|
1414 |
|
1415 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1416 if ((adapter->hw.mng_cookie.status & |
|
1417 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1418 e1000_update_mng_vlan(adapter); |
|
1419 } |
|
1420 |
|
1421 /* If AMT is enabled, let the firmware know that the network |
|
1422 * interface is now open */ |
|
1423 if (adapter->hw.mac_type == e1000_82573 && |
|
1424 e1000_check_mng_mode(&adapter->hw)) |
|
1425 e1000_get_hw_control(adapter); |
|
1426 |
|
1427 /* before we allocate an interrupt, we must be ready to handle it. |
|
1428 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1429 * as soon as we call pci_request_irq, so we have to setup our |
|
1430 * clean_rx handler before we do so. */ |
|
1431 e1000_configure(adapter); |
|
1432 |
|
1433 err = e1000_request_irq(adapter); |
|
1434 if (err) |
|
1435 goto err_req_irq; |
|
1436 |
|
1437 /* From here on the code is the same as e1000_up() */ |
|
1438 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1439 |
|
1440 #ifdef CONFIG_E1000_NAPI |
|
1441 netif_poll_enable(netdev); |
|
1442 #endif |
|
1443 |
|
1444 e1000_irq_enable(adapter); |
|
1445 |
|
1446 /* fire a link status change interrupt to start the watchdog */ |
|
1447 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); |
|
1448 |
|
1449 return E1000_SUCCESS; |
|
1450 |
|
1451 err_req_irq: |
|
1452 e1000_release_hw_control(adapter); |
|
1453 e1000_power_down_phy(adapter); |
|
1454 e1000_free_all_rx_resources(adapter); |
|
1455 err_setup_rx: |
|
1456 e1000_free_all_tx_resources(adapter); |
|
1457 err_setup_tx: |
|
1458 e1000_reset(adapter); |
|
1459 |
|
1460 return err; |
|
1461 } |
|
1462 |
|
1463 /** |
|
1464 * e1000_close - Disables a network interface |
|
1465 * @netdev: network interface device structure |
|
1466 * |
|
1467 * Returns 0, this is not allowed to fail |
|
1468 * |
|
1469 * The close entry point is called when an interface is de-activated |
|
1470 * by the OS. The hardware is still under the drivers control, but |
|
1471 * needs to be disabled. A global MAC reset is issued to stop the |
|
1472 * hardware, and all transmit and receive resources are freed. |
|
1473 **/ |
|
1474 |
|
1475 static int |
|
1476 e1000_close(struct net_device *netdev) |
|
1477 { |
|
1478 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1479 |
|
1480 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1481 e1000_down(adapter); |
|
1482 e1000_power_down_phy(adapter); |
|
1483 e1000_free_irq(adapter); |
|
1484 |
|
1485 e1000_free_all_tx_resources(adapter); |
|
1486 e1000_free_all_rx_resources(adapter); |
|
1487 |
|
1488 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1489 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1490 if ((adapter->hw.mng_cookie.status & |
|
1491 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1492 !(adapter->vlgrp && |
|
1493 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1494 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1495 } |
|
1496 |
|
1497 /* If AMT is enabled, let the firmware know that the network |
|
1498 * interface is now closed */ |
|
1499 if (adapter->hw.mac_type == e1000_82573 && |
|
1500 e1000_check_mng_mode(&adapter->hw)) |
|
1501 e1000_release_hw_control(adapter); |
|
1502 |
|
1503 return 0; |
|
1504 } |
|
1505 |
|
1506 /** |
|
1507 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1508 * @adapter: address of board private structure |
|
1509 * @start: address of beginning of memory |
|
1510 * @len: length of memory |
|
1511 **/ |
|
1512 static boolean_t |
|
1513 e1000_check_64k_bound(struct e1000_adapter *adapter, |
|
1514 void *start, unsigned long len) |
|
1515 { |
|
1516 unsigned long begin = (unsigned long) start; |
|
1517 unsigned long end = begin + len; |
|
1518 |
|
1519 /* First rev 82545 and 82546 need to not allow any memory |
|
1520 * write location to cross 64k boundary due to errata 23 */ |
|
1521 if (adapter->hw.mac_type == e1000_82545 || |
|
1522 adapter->hw.mac_type == e1000_82546) { |
|
1523 return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
|
1524 } |
|
1525 |
|
1526 return TRUE; |
|
1527 } |
|
1528 |
|
1529 /** |
|
1530 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1531 * @adapter: board private structure |
|
1532 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1533 * |
|
1534 * Return 0 on success, negative on failure |
|
1535 **/ |
|
1536 |
|
1537 static int |
|
1538 e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1539 struct e1000_tx_ring *txdr) |
|
1540 { |
|
1541 struct pci_dev *pdev = adapter->pdev; |
|
1542 int size; |
|
1543 |
|
1544 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1545 txdr->buffer_info = vmalloc(size); |
|
1546 if (!txdr->buffer_info) { |
|
1547 DPRINTK(PROBE, ERR, |
|
1548 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1549 return -ENOMEM; |
|
1550 } |
|
1551 memset(txdr->buffer_info, 0, size); |
|
1552 |
|
1553 /* round up to nearest 4K */ |
|
1554 |
|
1555 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1556 txdr->size = ALIGN(txdr->size, 4096); |
|
1557 |
|
1558 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1559 if (!txdr->desc) { |
|
1560 setup_tx_desc_die: |
|
1561 vfree(txdr->buffer_info); |
|
1562 DPRINTK(PROBE, ERR, |
|
1563 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1564 return -ENOMEM; |
|
1565 } |
|
1566 |
|
1567 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1568 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1569 void *olddesc = txdr->desc; |
|
1570 dma_addr_t olddma = txdr->dma; |
|
1571 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
|
1572 "at %p\n", txdr->size, txdr->desc); |
|
1573 /* Try again, without freeing the previous */ |
|
1574 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1575 /* Failed allocation, critical failure */ |
|
1576 if (!txdr->desc) { |
|
1577 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1578 goto setup_tx_desc_die; |
|
1579 } |
|
1580 |
|
1581 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1582 /* give up */ |
|
1583 pci_free_consistent(pdev, txdr->size, txdr->desc, |
|
1584 txdr->dma); |
|
1585 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1586 DPRINTK(PROBE, ERR, |
|
1587 "Unable to allocate aligned memory " |
|
1588 "for the transmit descriptor ring\n"); |
|
1589 vfree(txdr->buffer_info); |
|
1590 return -ENOMEM; |
|
1591 } else { |
|
1592 /* Free old allocation, new allocation was successful */ |
|
1593 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1594 } |
|
1595 } |
|
1596 memset(txdr->desc, 0, txdr->size); |
|
1597 |
|
1598 txdr->next_to_use = 0; |
|
1599 txdr->next_to_clean = 0; |
|
1600 spin_lock_init(&txdr->tx_lock); |
|
1601 |
|
1602 return 0; |
|
1603 } |
|
1604 |
|
1605 /** |
|
1606 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1607 * (Descriptors) for all queues |
|
1608 * @adapter: board private structure |
|
1609 * |
|
1610 * Return 0 on success, negative on failure |
|
1611 **/ |
|
1612 |
|
1613 int |
|
1614 e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1615 { |
|
1616 int i, err = 0; |
|
1617 |
|
1618 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1619 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1620 if (err) { |
|
1621 DPRINTK(PROBE, ERR, |
|
1622 "Allocation for Tx Queue %u failed\n", i); |
|
1623 for (i-- ; i >= 0; i--) |
|
1624 e1000_free_tx_resources(adapter, |
|
1625 &adapter->tx_ring[i]); |
|
1626 break; |
|
1627 } |
|
1628 } |
|
1629 |
|
1630 return err; |
|
1631 } |
|
1632 |
|
1633 /** |
|
1634 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1635 * @adapter: board private structure |
|
1636 * |
|
1637 * Configure the Tx unit of the MAC after a reset. |
|
1638 **/ |
|
1639 |
|
1640 static void |
|
1641 e1000_configure_tx(struct e1000_adapter *adapter) |
|
1642 { |
|
1643 uint64_t tdba; |
|
1644 struct e1000_hw *hw = &adapter->hw; |
|
1645 uint32_t tdlen, tctl, tipg, tarc; |
|
1646 uint32_t ipgr1, ipgr2; |
|
1647 |
|
1648 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1649 |
|
1650 switch (adapter->num_tx_queues) { |
|
1651 case 1: |
|
1652 default: |
|
1653 tdba = adapter->tx_ring[0].dma; |
|
1654 tdlen = adapter->tx_ring[0].count * |
|
1655 sizeof(struct e1000_tx_desc); |
|
1656 E1000_WRITE_REG(hw, TDLEN, tdlen); |
|
1657 E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); |
|
1658 E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1659 E1000_WRITE_REG(hw, TDT, 0); |
|
1660 E1000_WRITE_REG(hw, TDH, 0); |
|
1661 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1662 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1663 break; |
|
1664 } |
|
1665 |
|
1666 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1667 if (adapter->hw.mac_type <= e1000_82547_rev_2 && |
|
1668 (hw->media_type == e1000_media_type_fiber || |
|
1669 hw->media_type == e1000_media_type_internal_serdes)) |
|
1670 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1671 else |
|
1672 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1673 |
|
1674 switch (hw->mac_type) { |
|
1675 case e1000_82542_rev2_0: |
|
1676 case e1000_82542_rev2_1: |
|
1677 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1678 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1679 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1680 break; |
|
1681 case e1000_80003es2lan: |
|
1682 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1683 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; |
|
1684 break; |
|
1685 default: |
|
1686 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1687 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1688 break; |
|
1689 } |
|
1690 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1691 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1692 E1000_WRITE_REG(hw, TIPG, tipg); |
|
1693 |
|
1694 /* Set the Tx Interrupt Delay register */ |
|
1695 |
|
1696 E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
|
1697 if (hw->mac_type >= e1000_82540) |
|
1698 E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); |
|
1699 |
|
1700 /* Program the Transmit Control Register */ |
|
1701 |
|
1702 tctl = E1000_READ_REG(hw, TCTL); |
|
1703 tctl &= ~E1000_TCTL_CT; |
|
1704 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1705 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1706 |
|
1707 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
|
1708 tarc = E1000_READ_REG(hw, TARC0); |
|
1709 /* set the speed mode bit, we'll clear it if we're not at |
|
1710 * gigabit link later */ |
|
1711 tarc |= (1 << 21); |
|
1712 E1000_WRITE_REG(hw, TARC0, tarc); |
|
1713 } else if (hw->mac_type == e1000_80003es2lan) { |
|
1714 tarc = E1000_READ_REG(hw, TARC0); |
|
1715 tarc |= 1; |
|
1716 E1000_WRITE_REG(hw, TARC0, tarc); |
|
1717 tarc = E1000_READ_REG(hw, TARC1); |
|
1718 tarc |= 1; |
|
1719 E1000_WRITE_REG(hw, TARC1, tarc); |
|
1720 } |
|
1721 |
|
1722 e1000_config_collision_dist(hw); |
|
1723 |
|
1724 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1725 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1726 |
|
1727 /* only set IDE if we are delaying interrupts using the timers */ |
|
1728 if (adapter->tx_int_delay) |
|
1729 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1730 |
|
1731 if (hw->mac_type < e1000_82543) |
|
1732 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1733 else |
|
1734 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1735 |
|
1736 /* Cache if we're 82544 running in PCI-X because we'll |
|
1737 * need this to apply a workaround later in the send path. */ |
|
1738 if (hw->mac_type == e1000_82544 && |
|
1739 hw->bus_type == e1000_bus_type_pcix) |
|
1740 adapter->pcix_82544 = 1; |
|
1741 |
|
1742 E1000_WRITE_REG(hw, TCTL, tctl); |
|
1743 |
|
1744 } |
|
1745 |
|
1746 /** |
|
1747 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1748 * @adapter: board private structure |
|
1749 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1750 * |
|
1751 * Returns 0 on success, negative on failure |
|
1752 **/ |
|
1753 |
|
1754 static int |
|
1755 e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1756 struct e1000_rx_ring *rxdr) |
|
1757 { |
|
1758 struct pci_dev *pdev = adapter->pdev; |
|
1759 int size, desc_len; |
|
1760 |
|
1761 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1762 rxdr->buffer_info = vmalloc(size); |
|
1763 if (!rxdr->buffer_info) { |
|
1764 DPRINTK(PROBE, ERR, |
|
1765 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1766 return -ENOMEM; |
|
1767 } |
|
1768 memset(rxdr->buffer_info, 0, size); |
|
1769 |
|
1770 rxdr->ps_page = kcalloc(rxdr->count, sizeof(struct e1000_ps_page), |
|
1771 GFP_KERNEL); |
|
1772 if (!rxdr->ps_page) { |
|
1773 vfree(rxdr->buffer_info); |
|
1774 DPRINTK(PROBE, ERR, |
|
1775 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1776 return -ENOMEM; |
|
1777 } |
|
1778 |
|
1779 rxdr->ps_page_dma = kcalloc(rxdr->count, |
|
1780 sizeof(struct e1000_ps_page_dma), |
|
1781 GFP_KERNEL); |
|
1782 if (!rxdr->ps_page_dma) { |
|
1783 vfree(rxdr->buffer_info); |
|
1784 kfree(rxdr->ps_page); |
|
1785 DPRINTK(PROBE, ERR, |
|
1786 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1787 return -ENOMEM; |
|
1788 } |
|
1789 |
|
1790 if (adapter->hw.mac_type <= e1000_82547_rev_2) |
|
1791 desc_len = sizeof(struct e1000_rx_desc); |
|
1792 else |
|
1793 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
1794 |
|
1795 /* Round up to nearest 4K */ |
|
1796 |
|
1797 rxdr->size = rxdr->count * desc_len; |
|
1798 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1799 |
|
1800 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1801 |
|
1802 if (!rxdr->desc) { |
|
1803 DPRINTK(PROBE, ERR, |
|
1804 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1805 setup_rx_desc_die: |
|
1806 vfree(rxdr->buffer_info); |
|
1807 kfree(rxdr->ps_page); |
|
1808 kfree(rxdr->ps_page_dma); |
|
1809 return -ENOMEM; |
|
1810 } |
|
1811 |
|
1812 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1813 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1814 void *olddesc = rxdr->desc; |
|
1815 dma_addr_t olddma = rxdr->dma; |
|
1816 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
|
1817 "at %p\n", rxdr->size, rxdr->desc); |
|
1818 /* Try again, without freeing the previous */ |
|
1819 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1820 /* Failed allocation, critical failure */ |
|
1821 if (!rxdr->desc) { |
|
1822 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1823 DPRINTK(PROBE, ERR, |
|
1824 "Unable to allocate memory " |
|
1825 "for the receive descriptor ring\n"); |
|
1826 goto setup_rx_desc_die; |
|
1827 } |
|
1828 |
|
1829 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1830 /* give up */ |
|
1831 pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
|
1832 rxdr->dma); |
|
1833 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1834 DPRINTK(PROBE, ERR, |
|
1835 "Unable to allocate aligned memory " |
|
1836 "for the receive descriptor ring\n"); |
|
1837 goto setup_rx_desc_die; |
|
1838 } else { |
|
1839 /* Free old allocation, new allocation was successful */ |
|
1840 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1841 } |
|
1842 } |
|
1843 memset(rxdr->desc, 0, rxdr->size); |
|
1844 |
|
1845 rxdr->next_to_clean = 0; |
|
1846 rxdr->next_to_use = 0; |
|
1847 |
|
1848 return 0; |
|
1849 } |
|
1850 |
|
1851 /** |
|
1852 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1853 * (Descriptors) for all queues |
|
1854 * @adapter: board private structure |
|
1855 * |
|
1856 * Return 0 on success, negative on failure |
|
1857 **/ |
|
1858 |
|
1859 int |
|
1860 e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1861 { |
|
1862 int i, err = 0; |
|
1863 |
|
1864 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1865 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1866 if (err) { |
|
1867 DPRINTK(PROBE, ERR, |
|
1868 "Allocation for Rx Queue %u failed\n", i); |
|
1869 for (i-- ; i >= 0; i--) |
|
1870 e1000_free_rx_resources(adapter, |
|
1871 &adapter->rx_ring[i]); |
|
1872 break; |
|
1873 } |
|
1874 } |
|
1875 |
|
1876 return err; |
|
1877 } |
|
1878 |
|
1879 /** |
|
1880 * e1000_setup_rctl - configure the receive control registers |
|
1881 * @adapter: Board private structure |
|
1882 **/ |
|
1883 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
1884 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
1885 static void |
|
1886 e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1887 { |
|
1888 uint32_t rctl, rfctl; |
|
1889 uint32_t psrctl = 0; |
|
1890 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
|
1891 uint32_t pages = 0; |
|
1892 #endif |
|
1893 |
|
1894 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
1895 |
|
1896 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1897 |
|
1898 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1899 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1900 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1901 |
|
1902 if (adapter->hw.tbi_compatibility_on == 1) |
|
1903 rctl |= E1000_RCTL_SBP; |
|
1904 else |
|
1905 rctl &= ~E1000_RCTL_SBP; |
|
1906 |
|
1907 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1908 rctl &= ~E1000_RCTL_LPE; |
|
1909 else |
|
1910 rctl |= E1000_RCTL_LPE; |
|
1911 |
|
1912 /* Setup buffer sizes */ |
|
1913 rctl &= ~E1000_RCTL_SZ_4096; |
|
1914 rctl |= E1000_RCTL_BSEX; |
|
1915 switch (adapter->rx_buffer_len) { |
|
1916 case E1000_RXBUFFER_256: |
|
1917 rctl |= E1000_RCTL_SZ_256; |
|
1918 rctl &= ~E1000_RCTL_BSEX; |
|
1919 break; |
|
1920 case E1000_RXBUFFER_512: |
|
1921 rctl |= E1000_RCTL_SZ_512; |
|
1922 rctl &= ~E1000_RCTL_BSEX; |
|
1923 break; |
|
1924 case E1000_RXBUFFER_1024: |
|
1925 rctl |= E1000_RCTL_SZ_1024; |
|
1926 rctl &= ~E1000_RCTL_BSEX; |
|
1927 break; |
|
1928 case E1000_RXBUFFER_2048: |
|
1929 default: |
|
1930 rctl |= E1000_RCTL_SZ_2048; |
|
1931 rctl &= ~E1000_RCTL_BSEX; |
|
1932 break; |
|
1933 case E1000_RXBUFFER_4096: |
|
1934 rctl |= E1000_RCTL_SZ_4096; |
|
1935 break; |
|
1936 case E1000_RXBUFFER_8192: |
|
1937 rctl |= E1000_RCTL_SZ_8192; |
|
1938 break; |
|
1939 case E1000_RXBUFFER_16384: |
|
1940 rctl |= E1000_RCTL_SZ_16384; |
|
1941 break; |
|
1942 } |
|
1943 |
|
1944 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
|
1945 /* 82571 and greater support packet-split where the protocol |
|
1946 * header is placed in skb->data and the packet data is |
|
1947 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
1948 * In the case of a non-split, skb->data is linearly filled, |
|
1949 * followed by the page buffers. Therefore, skb->data is |
|
1950 * sized to hold the largest protocol header. |
|
1951 */ |
|
1952 /* allocations using alloc_page take too long for regular MTU |
|
1953 * so only enable packet split for jumbo frames */ |
|
1954 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
1955 if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) && |
|
1956 PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE)) |
|
1957 adapter->rx_ps_pages = pages; |
|
1958 else |
|
1959 adapter->rx_ps_pages = 0; |
|
1960 #endif |
|
1961 if (adapter->rx_ps_pages) { |
|
1962 /* Configure extra packet-split registers */ |
|
1963 rfctl = E1000_READ_REG(&adapter->hw, RFCTL); |
|
1964 rfctl |= E1000_RFCTL_EXTEN; |
|
1965 /* disable packet split support for IPv6 extension headers, |
|
1966 * because some malformed IPv6 headers can hang the RX */ |
|
1967 rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
|
1968 E1000_RFCTL_NEW_IPV6_EXT_DIS); |
|
1969 |
|
1970 E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); |
|
1971 |
|
1972 rctl |= E1000_RCTL_DTYP_PS; |
|
1973 |
|
1974 psrctl |= adapter->rx_ps_bsize0 >> |
|
1975 E1000_PSRCTL_BSIZE0_SHIFT; |
|
1976 |
|
1977 switch (adapter->rx_ps_pages) { |
|
1978 case 3: |
|
1979 psrctl |= PAGE_SIZE << |
|
1980 E1000_PSRCTL_BSIZE3_SHIFT; |
|
1981 case 2: |
|
1982 psrctl |= PAGE_SIZE << |
|
1983 E1000_PSRCTL_BSIZE2_SHIFT; |
|
1984 case 1: |
|
1985 psrctl |= PAGE_SIZE >> |
|
1986 E1000_PSRCTL_BSIZE1_SHIFT; |
|
1987 break; |
|
1988 } |
|
1989 |
|
1990 E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); |
|
1991 } |
|
1992 |
|
1993 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
1994 } |
|
1995 |
|
1996 /** |
|
1997 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
1998 * @adapter: board private structure |
|
1999 * |
|
2000 * Configure the Rx unit of the MAC after a reset. |
|
2001 **/ |
|
2002 |
|
2003 static void |
|
2004 e1000_configure_rx(struct e1000_adapter *adapter) |
|
2005 { |
|
2006 uint64_t rdba; |
|
2007 struct e1000_hw *hw = &adapter->hw; |
|
2008 uint32_t rdlen, rctl, rxcsum, ctrl_ext; |
|
2009 |
|
2010 if (adapter->rx_ps_pages) { |
|
2011 /* this is a 32 byte descriptor */ |
|
2012 rdlen = adapter->rx_ring[0].count * |
|
2013 sizeof(union e1000_rx_desc_packet_split); |
|
2014 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
2015 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
2016 } else { |
|
2017 rdlen = adapter->rx_ring[0].count * |
|
2018 sizeof(struct e1000_rx_desc); |
|
2019 adapter->clean_rx = e1000_clean_rx_irq; |
|
2020 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
2021 } |
|
2022 |
|
2023 /* disable receives while setting up the descriptors */ |
|
2024 rctl = E1000_READ_REG(hw, RCTL); |
|
2025 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); |
|
2026 |
|
2027 /* set the Receive Delay Timer Register */ |
|
2028 E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
|
2029 |
|
2030 if (hw->mac_type >= e1000_82540) { |
|
2031 E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); |
|
2032 if (adapter->itr_setting != 0) |
|
2033 E1000_WRITE_REG(hw, ITR, |
|
2034 1000000000 / (adapter->itr * 256)); |
|
2035 } |
|
2036 |
|
2037 if (hw->mac_type >= e1000_82571) { |
|
2038 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
|
2039 /* Reset delay timers after every interrupt */ |
|
2040 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
|
2041 #ifdef CONFIG_E1000_NAPI |
|
2042 /* Auto-Mask interrupts upon ICR access */ |
|
2043 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
2044 E1000_WRITE_REG(hw, IAM, 0xffffffff); |
|
2045 #endif |
|
2046 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
|
2047 E1000_WRITE_FLUSH(hw); |
|
2048 } |
|
2049 |
|
2050 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
2051 * the Base and Length of the Rx Descriptor Ring */ |
|
2052 switch (adapter->num_rx_queues) { |
|
2053 case 1: |
|
2054 default: |
|
2055 rdba = adapter->rx_ring[0].dma; |
|
2056 E1000_WRITE_REG(hw, RDLEN, rdlen); |
|
2057 E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); |
|
2058 E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
2059 E1000_WRITE_REG(hw, RDT, 0); |
|
2060 E1000_WRITE_REG(hw, RDH, 0); |
|
2061 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
2062 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
2063 break; |
|
2064 } |
|
2065 |
|
2066 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
2067 if (hw->mac_type >= e1000_82543) { |
|
2068 rxcsum = E1000_READ_REG(hw, RXCSUM); |
|
2069 if (adapter->rx_csum == TRUE) { |
|
2070 rxcsum |= E1000_RXCSUM_TUOFL; |
|
2071 |
|
2072 /* Enable 82571 IPv4 payload checksum for UDP fragments |
|
2073 * Must be used in conjunction with packet-split. */ |
|
2074 if ((hw->mac_type >= e1000_82571) && |
|
2075 (adapter->rx_ps_pages)) { |
|
2076 rxcsum |= E1000_RXCSUM_IPPCSE; |
|
2077 } |
|
2078 } else { |
|
2079 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
2080 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
2081 } |
|
2082 E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
|
2083 } |
|
2084 |
|
2085 /* enable early receives on 82573, only takes effect if using > 2048 |
|
2086 * byte total frame size. for example only for jumbo frames */ |
|
2087 #define E1000_ERT_2048 0x100 |
|
2088 if (hw->mac_type == e1000_82573) |
|
2089 E1000_WRITE_REG(hw, ERT, E1000_ERT_2048); |
|
2090 |
|
2091 /* Enable Receives */ |
|
2092 E1000_WRITE_REG(hw, RCTL, rctl); |
|
2093 } |
|
2094 |
|
2095 /** |
|
2096 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
2097 * @adapter: board private structure |
|
2098 * @tx_ring: Tx descriptor ring for a specific queue |
|
2099 * |
|
2100 * Free all transmit software resources |
|
2101 **/ |
|
2102 |
|
2103 static void |
|
2104 e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
2105 struct e1000_tx_ring *tx_ring) |
|
2106 { |
|
2107 struct pci_dev *pdev = adapter->pdev; |
|
2108 |
|
2109 e1000_clean_tx_ring(adapter, tx_ring); |
|
2110 |
|
2111 vfree(tx_ring->buffer_info); |
|
2112 tx_ring->buffer_info = NULL; |
|
2113 |
|
2114 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
|
2115 |
|
2116 tx_ring->desc = NULL; |
|
2117 } |
|
2118 |
|
2119 /** |
|
2120 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
2121 * @adapter: board private structure |
|
2122 * |
|
2123 * Free all transmit software resources |
|
2124 **/ |
|
2125 |
|
2126 void |
|
2127 e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
2128 { |
|
2129 int i; |
|
2130 |
|
2131 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2132 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
2133 } |
|
2134 |
|
2135 static void |
|
2136 e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
2137 struct e1000_buffer *buffer_info) |
|
2138 { |
|
2139 if (buffer_info->dma) { |
|
2140 pci_unmap_page(adapter->pdev, |
|
2141 buffer_info->dma, |
|
2142 buffer_info->length, |
|
2143 PCI_DMA_TODEVICE); |
|
2144 buffer_info->dma = 0; |
|
2145 } |
|
2146 if (buffer_info->skb) { |
|
2147 dev_kfree_skb_any(buffer_info->skb); |
|
2148 buffer_info->skb = NULL; |
|
2149 } |
|
2150 /* buffer_info must be completely set up in the transmit path */ |
|
2151 } |
|
2152 |
|
2153 /** |
|
2154 * e1000_clean_tx_ring - Free Tx Buffers |
|
2155 * @adapter: board private structure |
|
2156 * @tx_ring: ring to be cleaned |
|
2157 **/ |
|
2158 |
|
2159 static void |
|
2160 e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
2161 struct e1000_tx_ring *tx_ring) |
|
2162 { |
|
2163 struct e1000_buffer *buffer_info; |
|
2164 unsigned long size; |
|
2165 unsigned int i; |
|
2166 |
|
2167 /* Free all the Tx ring sk_buffs */ |
|
2168 |
|
2169 for (i = 0; i < tx_ring->count; i++) { |
|
2170 buffer_info = &tx_ring->buffer_info[i]; |
|
2171 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
2172 } |
|
2173 |
|
2174 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2175 memset(tx_ring->buffer_info, 0, size); |
|
2176 |
|
2177 /* Zero out the descriptor ring */ |
|
2178 |
|
2179 memset(tx_ring->desc, 0, tx_ring->size); |
|
2180 |
|
2181 tx_ring->next_to_use = 0; |
|
2182 tx_ring->next_to_clean = 0; |
|
2183 tx_ring->last_tx_tso = 0; |
|
2184 |
|
2185 writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
|
2186 writel(0, adapter->hw.hw_addr + tx_ring->tdt); |
|
2187 } |
|
2188 |
|
2189 /** |
|
2190 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
2191 * @adapter: board private structure |
|
2192 **/ |
|
2193 |
|
2194 static void |
|
2195 e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
2196 { |
|
2197 int i; |
|
2198 |
|
2199 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2200 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
2201 } |
|
2202 |
|
2203 /** |
|
2204 * e1000_free_rx_resources - Free Rx Resources |
|
2205 * @adapter: board private structure |
|
2206 * @rx_ring: ring to clean the resources from |
|
2207 * |
|
2208 * Free all receive software resources |
|
2209 **/ |
|
2210 |
|
2211 static void |
|
2212 e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
2213 struct e1000_rx_ring *rx_ring) |
|
2214 { |
|
2215 struct pci_dev *pdev = adapter->pdev; |
|
2216 |
|
2217 e1000_clean_rx_ring(adapter, rx_ring); |
|
2218 |
|
2219 vfree(rx_ring->buffer_info); |
|
2220 rx_ring->buffer_info = NULL; |
|
2221 kfree(rx_ring->ps_page); |
|
2222 rx_ring->ps_page = NULL; |
|
2223 kfree(rx_ring->ps_page_dma); |
|
2224 rx_ring->ps_page_dma = NULL; |
|
2225 |
|
2226 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
|
2227 |
|
2228 rx_ring->desc = NULL; |
|
2229 } |
|
2230 |
|
2231 /** |
|
2232 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
2233 * @adapter: board private structure |
|
2234 * |
|
2235 * Free all receive software resources |
|
2236 **/ |
|
2237 |
|
2238 void |
|
2239 e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
2240 { |
|
2241 int i; |
|
2242 |
|
2243 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2244 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
2245 } |
|
2246 |
|
2247 /** |
|
2248 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
2249 * @adapter: board private structure |
|
2250 * @rx_ring: ring to free buffers from |
|
2251 **/ |
|
2252 |
|
2253 static void |
|
2254 e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
2255 struct e1000_rx_ring *rx_ring) |
|
2256 { |
|
2257 struct e1000_buffer *buffer_info; |
|
2258 struct e1000_ps_page *ps_page; |
|
2259 struct e1000_ps_page_dma *ps_page_dma; |
|
2260 struct pci_dev *pdev = adapter->pdev; |
|
2261 unsigned long size; |
|
2262 unsigned int i, j; |
|
2263 |
|
2264 /* Free all the Rx ring sk_buffs */ |
|
2265 for (i = 0; i < rx_ring->count; i++) { |
|
2266 buffer_info = &rx_ring->buffer_info[i]; |
|
2267 if (buffer_info->skb) { |
|
2268 pci_unmap_single(pdev, |
|
2269 buffer_info->dma, |
|
2270 buffer_info->length, |
|
2271 PCI_DMA_FROMDEVICE); |
|
2272 |
|
2273 dev_kfree_skb(buffer_info->skb); |
|
2274 buffer_info->skb = NULL; |
|
2275 } |
|
2276 ps_page = &rx_ring->ps_page[i]; |
|
2277 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
2278 for (j = 0; j < adapter->rx_ps_pages; j++) { |
|
2279 if (!ps_page->ps_page[j]) break; |
|
2280 pci_unmap_page(pdev, |
|
2281 ps_page_dma->ps_page_dma[j], |
|
2282 PAGE_SIZE, PCI_DMA_FROMDEVICE); |
|
2283 ps_page_dma->ps_page_dma[j] = 0; |
|
2284 put_page(ps_page->ps_page[j]); |
|
2285 ps_page->ps_page[j] = NULL; |
|
2286 } |
|
2287 } |
|
2288 |
|
2289 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2290 memset(rx_ring->buffer_info, 0, size); |
|
2291 size = sizeof(struct e1000_ps_page) * rx_ring->count; |
|
2292 memset(rx_ring->ps_page, 0, size); |
|
2293 size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; |
|
2294 memset(rx_ring->ps_page_dma, 0, size); |
|
2295 |
|
2296 /* Zero out the descriptor ring */ |
|
2297 |
|
2298 memset(rx_ring->desc, 0, rx_ring->size); |
|
2299 |
|
2300 rx_ring->next_to_clean = 0; |
|
2301 rx_ring->next_to_use = 0; |
|
2302 |
|
2303 writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
|
2304 writel(0, adapter->hw.hw_addr + rx_ring->rdt); |
|
2305 } |
|
2306 |
|
2307 /** |
|
2308 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
2309 * @adapter: board private structure |
|
2310 **/ |
|
2311 |
|
2312 static void |
|
2313 e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
2314 { |
|
2315 int i; |
|
2316 |
|
2317 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2318 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
2319 } |
|
2320 |
|
2321 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2322 * and memory write and invalidate disabled for certain operations |
|
2323 */ |
|
2324 static void |
|
2325 e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2326 { |
|
2327 struct net_device *netdev = adapter->netdev; |
|
2328 uint32_t rctl; |
|
2329 |
|
2330 e1000_pci_clear_mwi(&adapter->hw); |
|
2331 |
|
2332 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
2333 rctl |= E1000_RCTL_RST; |
|
2334 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
2335 E1000_WRITE_FLUSH(&adapter->hw); |
|
2336 mdelay(5); |
|
2337 |
|
2338 if (netif_running(netdev)) |
|
2339 e1000_clean_all_rx_rings(adapter); |
|
2340 } |
|
2341 |
|
2342 static void |
|
2343 e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2344 { |
|
2345 struct net_device *netdev = adapter->netdev; |
|
2346 uint32_t rctl; |
|
2347 |
|
2348 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
2349 rctl &= ~E1000_RCTL_RST; |
|
2350 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
2351 E1000_WRITE_FLUSH(&adapter->hw); |
|
2352 mdelay(5); |
|
2353 |
|
2354 if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2355 e1000_pci_set_mwi(&adapter->hw); |
|
2356 |
|
2357 if (netif_running(netdev)) { |
|
2358 /* No need to loop, because 82542 supports only 1 queue */ |
|
2359 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2360 e1000_configure_rx(adapter); |
|
2361 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2362 } |
|
2363 } |
|
2364 |
|
2365 /** |
|
2366 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2367 * @netdev: network interface device structure |
|
2368 * @p: pointer to an address structure |
|
2369 * |
|
2370 * Returns 0 on success, negative on failure |
|
2371 **/ |
|
2372 |
|
2373 static int |
|
2374 e1000_set_mac(struct net_device *netdev, void *p) |
|
2375 { |
|
2376 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2377 struct sockaddr *addr = p; |
|
2378 |
|
2379 if (!is_valid_ether_addr(addr->sa_data)) |
|
2380 return -EADDRNOTAVAIL; |
|
2381 |
|
2382 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2383 |
|
2384 if (adapter->hw.mac_type == e1000_82542_rev2_0) |
|
2385 e1000_enter_82542_rst(adapter); |
|
2386 |
|
2387 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2388 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); |
|
2389 |
|
2390 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); |
|
2391 |
|
2392 /* With 82571 controllers, LAA may be overwritten (with the default) |
|
2393 * due to controller reset from the other port. */ |
|
2394 if (adapter->hw.mac_type == e1000_82571) { |
|
2395 /* activate the work around */ |
|
2396 adapter->hw.laa_is_present = 1; |
|
2397 |
|
2398 /* Hold a copy of the LAA in RAR[14] This is done so that |
|
2399 * between the time RAR[0] gets clobbered and the time it |
|
2400 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
2401 * of the RARs and no incoming packets directed to this port |
|
2402 * are dropped. Eventaully the LAA will be in RAR[0] and |
|
2403 * RAR[14] */ |
|
2404 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
|
2405 E1000_RAR_ENTRIES - 1); |
|
2406 } |
|
2407 |
|
2408 if (adapter->hw.mac_type == e1000_82542_rev2_0) |
|
2409 e1000_leave_82542_rst(adapter); |
|
2410 |
|
2411 return 0; |
|
2412 } |
|
2413 |
|
2414 /** |
|
2415 * e1000_set_multi - Multicast and Promiscuous mode set |
|
2416 * @netdev: network interface device structure |
|
2417 * |
|
2418 * The set_multi entry point is called whenever the multicast address |
|
2419 * list or the network interface flags are updated. This routine is |
|
2420 * responsible for configuring the hardware for proper multicast, |
|
2421 * promiscuous mode, and all-multi behavior. |
|
2422 **/ |
|
2423 |
|
2424 static void |
|
2425 e1000_set_multi(struct net_device *netdev) |
|
2426 { |
|
2427 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2428 struct e1000_hw *hw = &adapter->hw; |
|
2429 struct dev_mc_list *mc_ptr; |
|
2430 uint32_t rctl; |
|
2431 uint32_t hash_value; |
|
2432 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2433 int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
|
2434 E1000_NUM_MTA_REGISTERS_ICH8LAN : |
|
2435 E1000_NUM_MTA_REGISTERS; |
|
2436 |
|
2437 if (adapter->hw.mac_type == e1000_ich8lan) |
|
2438 rar_entries = E1000_RAR_ENTRIES_ICH8LAN; |
|
2439 |
|
2440 /* reserve RAR[14] for LAA over-write work-around */ |
|
2441 if (adapter->hw.mac_type == e1000_82571) |
|
2442 rar_entries--; |
|
2443 |
|
2444 /* Check for Promiscuous and All Multicast modes */ |
|
2445 |
|
2446 rctl = E1000_READ_REG(hw, RCTL); |
|
2447 |
|
2448 if (netdev->flags & IFF_PROMISC) { |
|
2449 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2450 } else if (netdev->flags & IFF_ALLMULTI) { |
|
2451 rctl |= E1000_RCTL_MPE; |
|
2452 rctl &= ~E1000_RCTL_UPE; |
|
2453 } else { |
|
2454 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2455 } |
|
2456 |
|
2457 E1000_WRITE_REG(hw, RCTL, rctl); |
|
2458 |
|
2459 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2460 |
|
2461 if (hw->mac_type == e1000_82542_rev2_0) |
|
2462 e1000_enter_82542_rst(adapter); |
|
2463 |
|
2464 /* load the first 14 multicast address into the exact filters 1-14 |
|
2465 * RAR 0 is used for the station MAC adddress |
|
2466 * if there are not 14 addresses, go ahead and clear the filters |
|
2467 * -- with 82571 controllers only 0-13 entries are filled here |
|
2468 */ |
|
2469 mc_ptr = netdev->mc_list; |
|
2470 |
|
2471 for (i = 1; i < rar_entries; i++) { |
|
2472 if (mc_ptr) { |
|
2473 e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
|
2474 mc_ptr = mc_ptr->next; |
|
2475 } else { |
|
2476 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2477 E1000_WRITE_FLUSH(hw); |
|
2478 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2479 E1000_WRITE_FLUSH(hw); |
|
2480 } |
|
2481 } |
|
2482 |
|
2483 /* clear the old settings from the multicast hash table */ |
|
2484 |
|
2485 for (i = 0; i < mta_reg_count; i++) { |
|
2486 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
|
2487 E1000_WRITE_FLUSH(hw); |
|
2488 } |
|
2489 |
|
2490 /* load any remaining addresses into the hash table */ |
|
2491 |
|
2492 for (; mc_ptr; mc_ptr = mc_ptr->next) { |
|
2493 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); |
|
2494 e1000_mta_set(hw, hash_value); |
|
2495 } |
|
2496 |
|
2497 if (hw->mac_type == e1000_82542_rev2_0) |
|
2498 e1000_leave_82542_rst(adapter); |
|
2499 } |
|
2500 |
|
2501 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2502 * the phy */ |
|
2503 |
|
2504 static void |
|
2505 e1000_update_phy_info(unsigned long data) |
|
2506 { |
|
2507 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
2508 e1000_phy_get_info(&adapter->hw, &adapter->phy_info); |
|
2509 } |
|
2510 |
|
2511 /** |
|
2512 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2513 * @data: pointer to adapter cast into an unsigned long |
|
2514 **/ |
|
2515 |
|
2516 static void |
|
2517 e1000_82547_tx_fifo_stall(unsigned long data) |
|
2518 { |
|
2519 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
2520 struct net_device *netdev = adapter->netdev; |
|
2521 uint32_t tctl; |
|
2522 |
|
2523 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2524 if ((E1000_READ_REG(&adapter->hw, TDT) == |
|
2525 E1000_READ_REG(&adapter->hw, TDH)) && |
|
2526 (E1000_READ_REG(&adapter->hw, TDFT) == |
|
2527 E1000_READ_REG(&adapter->hw, TDFH)) && |
|
2528 (E1000_READ_REG(&adapter->hw, TDFTS) == |
|
2529 E1000_READ_REG(&adapter->hw, TDFHS))) { |
|
2530 tctl = E1000_READ_REG(&adapter->hw, TCTL); |
|
2531 E1000_WRITE_REG(&adapter->hw, TCTL, |
|
2532 tctl & ~E1000_TCTL_EN); |
|
2533 E1000_WRITE_REG(&adapter->hw, TDFT, |
|
2534 adapter->tx_head_addr); |
|
2535 E1000_WRITE_REG(&adapter->hw, TDFH, |
|
2536 adapter->tx_head_addr); |
|
2537 E1000_WRITE_REG(&adapter->hw, TDFTS, |
|
2538 adapter->tx_head_addr); |
|
2539 E1000_WRITE_REG(&adapter->hw, TDFHS, |
|
2540 adapter->tx_head_addr); |
|
2541 E1000_WRITE_REG(&adapter->hw, TCTL, tctl); |
|
2542 E1000_WRITE_FLUSH(&adapter->hw); |
|
2543 |
|
2544 adapter->tx_fifo_head = 0; |
|
2545 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2546 netif_wake_queue(netdev); |
|
2547 } else { |
|
2548 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2549 } |
|
2550 } |
|
2551 } |
|
2552 |
|
2553 /** |
|
2554 * e1000_watchdog - Timer Call-back |
|
2555 * @data: pointer to adapter cast into an unsigned long |
|
2556 **/ |
|
2557 static void |
|
2558 e1000_watchdog(unsigned long data) |
|
2559 { |
|
2560 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
2561 struct net_device *netdev = adapter->netdev; |
|
2562 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2563 uint32_t link, tctl; |
|
2564 int32_t ret_val; |
|
2565 |
|
2566 ret_val = e1000_check_for_link(&adapter->hw); |
|
2567 if ((ret_val == E1000_ERR_PHY) && |
|
2568 (adapter->hw.phy_type == e1000_phy_igp_3) && |
|
2569 (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
2570 /* See e1000_kumeran_lock_loss_workaround() */ |
|
2571 DPRINTK(LINK, INFO, |
|
2572 "Gigabit has been disabled, downgrading speed\n"); |
|
2573 } |
|
2574 |
|
2575 if (adapter->hw.mac_type == e1000_82573) { |
|
2576 e1000_enable_tx_pkt_filtering(&adapter->hw); |
|
2577 if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
|
2578 e1000_update_mng_vlan(adapter); |
|
2579 } |
|
2580 |
|
2581 if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
|
2582 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
|
2583 link = !adapter->hw.serdes_link_down; |
|
2584 else |
|
2585 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; |
|
2586 |
|
2587 if (link) { |
|
2588 if (!netif_carrier_ok(netdev)) { |
|
2589 uint32_t ctrl; |
|
2590 boolean_t txb2b = 1; |
|
2591 e1000_get_speed_and_duplex(&adapter->hw, |
|
2592 &adapter->link_speed, |
|
2593 &adapter->link_duplex); |
|
2594 |
|
2595 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
2596 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, " |
|
2597 "Flow Control: %s\n", |
|
2598 adapter->link_speed, |
|
2599 adapter->link_duplex == FULL_DUPLEX ? |
|
2600 "Full Duplex" : "Half Duplex", |
|
2601 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2602 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2603 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2604 E1000_CTRL_TFCE) ? "TX" : "None" ))); |
|
2605 |
|
2606 /* tweak tx_queue_len according to speed/duplex |
|
2607 * and adjust the timeout factor */ |
|
2608 netdev->tx_queue_len = adapter->tx_queue_len; |
|
2609 adapter->tx_timeout_factor = 1; |
|
2610 switch (adapter->link_speed) { |
|
2611 case SPEED_10: |
|
2612 txb2b = 0; |
|
2613 netdev->tx_queue_len = 10; |
|
2614 adapter->tx_timeout_factor = 8; |
|
2615 break; |
|
2616 case SPEED_100: |
|
2617 txb2b = 0; |
|
2618 netdev->tx_queue_len = 100; |
|
2619 /* maybe add some timeout factor ? */ |
|
2620 break; |
|
2621 } |
|
2622 |
|
2623 if ((adapter->hw.mac_type == e1000_82571 || |
|
2624 adapter->hw.mac_type == e1000_82572) && |
|
2625 txb2b == 0) { |
|
2626 uint32_t tarc0; |
|
2627 tarc0 = E1000_READ_REG(&adapter->hw, TARC0); |
|
2628 tarc0 &= ~(1 << 21); |
|
2629 E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); |
|
2630 } |
|
2631 |
|
2632 /* disable TSO for pcie and 10/100 speeds, to avoid |
|
2633 * some hardware issues */ |
|
2634 if (!adapter->tso_force && |
|
2635 adapter->hw.bus_type == e1000_bus_type_pci_express){ |
|
2636 switch (adapter->link_speed) { |
|
2637 case SPEED_10: |
|
2638 case SPEED_100: |
|
2639 DPRINTK(PROBE,INFO, |
|
2640 "10/100 speed: disabling TSO\n"); |
|
2641 netdev->features &= ~NETIF_F_TSO; |
|
2642 netdev->features &= ~NETIF_F_TSO6; |
|
2643 break; |
|
2644 case SPEED_1000: |
|
2645 netdev->features |= NETIF_F_TSO; |
|
2646 netdev->features |= NETIF_F_TSO6; |
|
2647 break; |
|
2648 default: |
|
2649 /* oops */ |
|
2650 break; |
|
2651 } |
|
2652 } |
|
2653 |
|
2654 /* enable transmits in the hardware, need to do this |
|
2655 * after setting TARC0 */ |
|
2656 tctl = E1000_READ_REG(&adapter->hw, TCTL); |
|
2657 tctl |= E1000_TCTL_EN; |
|
2658 E1000_WRITE_REG(&adapter->hw, TCTL, tctl); |
|
2659 |
|
2660 netif_carrier_on(netdev); |
|
2661 netif_wake_queue(netdev); |
|
2662 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2663 adapter->smartspeed = 0; |
|
2664 } else { |
|
2665 /* make sure the receive unit is started */ |
|
2666 if (adapter->hw.rx_needs_kicking) { |
|
2667 struct e1000_hw *hw = &adapter->hw; |
|
2668 uint32_t rctl = E1000_READ_REG(hw, RCTL); |
|
2669 E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN); |
|
2670 } |
|
2671 } |
|
2672 } else { |
|
2673 if (netif_carrier_ok(netdev)) { |
|
2674 adapter->link_speed = 0; |
|
2675 adapter->link_duplex = 0; |
|
2676 DPRINTK(LINK, INFO, "NIC Link is Down\n"); |
|
2677 netif_carrier_off(netdev); |
|
2678 netif_stop_queue(netdev); |
|
2679 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2680 |
|
2681 /* 80003ES2LAN workaround-- |
|
2682 * For packet buffer work-around on link down event; |
|
2683 * disable receives in the ISR and |
|
2684 * reset device here in the watchdog |
|
2685 */ |
|
2686 if (adapter->hw.mac_type == e1000_80003es2lan) |
|
2687 /* reset device */ |
|
2688 schedule_work(&adapter->reset_task); |
|
2689 } |
|
2690 |
|
2691 e1000_smartspeed(adapter); |
|
2692 } |
|
2693 |
|
2694 e1000_update_stats(adapter); |
|
2695 |
|
2696 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2697 adapter->tpt_old = adapter->stats.tpt; |
|
2698 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2699 adapter->colc_old = adapter->stats.colc; |
|
2700 |
|
2701 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2702 adapter->gorcl_old = adapter->stats.gorcl; |
|
2703 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2704 adapter->gotcl_old = adapter->stats.gotcl; |
|
2705 |
|
2706 e1000_update_adaptive(&adapter->hw); |
|
2707 |
|
2708 if (!netif_carrier_ok(netdev)) { |
|
2709 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2710 /* We've lost link, so the controller stops DMA, |
|
2711 * but we've got queued Tx work that's never going |
|
2712 * to get done, so reset controller to flush Tx. |
|
2713 * (Do the reset outside of interrupt context). */ |
|
2714 adapter->tx_timeout_count++; |
|
2715 schedule_work(&adapter->reset_task); |
|
2716 } |
|
2717 } |
|
2718 |
|
2719 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2720 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); |
|
2721 |
|
2722 /* Force detection of hung controller every watchdog period */ |
|
2723 adapter->detect_tx_hung = TRUE; |
|
2724 |
|
2725 /* With 82571 controllers, LAA may be overwritten due to controller |
|
2726 * reset from the other port. Set the appropriate LAA in RAR[0] */ |
|
2727 if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) |
|
2728 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); |
|
2729 |
|
2730 /* Reset the timer */ |
|
2731 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2732 } |
|
2733 |
|
2734 enum latency_range { |
|
2735 lowest_latency = 0, |
|
2736 low_latency = 1, |
|
2737 bulk_latency = 2, |
|
2738 latency_invalid = 255 |
|
2739 }; |
|
2740 |
|
2741 /** |
|
2742 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2743 * Stores a new ITR value based on packets and byte |
|
2744 * counts during the last interrupt. The advantage of per interrupt |
|
2745 * computation is faster updates and more accurate ITR for the current |
|
2746 * traffic pattern. Constants in this function were computed |
|
2747 * based on theoretical maximum wire speed and thresholds were set based |
|
2748 * on testing data as well as attempting to minimize response time |
|
2749 * while increasing bulk throughput. |
|
2750 * this functionality is controlled by the InterruptThrottleRate module |
|
2751 * parameter (see e1000_param.c) |
|
2752 * @adapter: pointer to adapter |
|
2753 * @itr_setting: current adapter->itr |
|
2754 * @packets: the number of packets during this measurement interval |
|
2755 * @bytes: the number of bytes during this measurement interval |
|
2756 **/ |
|
2757 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2758 uint16_t itr_setting, |
|
2759 int packets, |
|
2760 int bytes) |
|
2761 { |
|
2762 unsigned int retval = itr_setting; |
|
2763 struct e1000_hw *hw = &adapter->hw; |
|
2764 |
|
2765 if (unlikely(hw->mac_type < e1000_82540)) |
|
2766 goto update_itr_done; |
|
2767 |
|
2768 if (packets == 0) |
|
2769 goto update_itr_done; |
|
2770 |
|
2771 switch (itr_setting) { |
|
2772 case lowest_latency: |
|
2773 /* jumbo frames get bulk treatment*/ |
|
2774 if (bytes/packets > 8000) |
|
2775 retval = bulk_latency; |
|
2776 else if ((packets < 5) && (bytes > 512)) |
|
2777 retval = low_latency; |
|
2778 break; |
|
2779 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2780 if (bytes > 10000) { |
|
2781 /* jumbo frames need bulk latency setting */ |
|
2782 if (bytes/packets > 8000) |
|
2783 retval = bulk_latency; |
|
2784 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2785 retval = bulk_latency; |
|
2786 else if ((packets > 35)) |
|
2787 retval = lowest_latency; |
|
2788 } else if (bytes/packets > 2000) |
|
2789 retval = bulk_latency; |
|
2790 else if (packets <= 2 && bytes < 512) |
|
2791 retval = lowest_latency; |
|
2792 break; |
|
2793 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2794 if (bytes > 25000) { |
|
2795 if (packets > 35) |
|
2796 retval = low_latency; |
|
2797 } else if (bytes < 6000) { |
|
2798 retval = low_latency; |
|
2799 } |
|
2800 break; |
|
2801 } |
|
2802 |
|
2803 update_itr_done: |
|
2804 return retval; |
|
2805 } |
|
2806 |
|
2807 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2808 { |
|
2809 struct e1000_hw *hw = &adapter->hw; |
|
2810 uint16_t current_itr; |
|
2811 uint32_t new_itr = adapter->itr; |
|
2812 |
|
2813 if (unlikely(hw->mac_type < e1000_82540)) |
|
2814 return; |
|
2815 |
|
2816 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2817 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2818 current_itr = 0; |
|
2819 new_itr = 4000; |
|
2820 goto set_itr_now; |
|
2821 } |
|
2822 |
|
2823 adapter->tx_itr = e1000_update_itr(adapter, |
|
2824 adapter->tx_itr, |
|
2825 adapter->total_tx_packets, |
|
2826 adapter->total_tx_bytes); |
|
2827 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2828 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2829 adapter->tx_itr = low_latency; |
|
2830 |
|
2831 adapter->rx_itr = e1000_update_itr(adapter, |
|
2832 adapter->rx_itr, |
|
2833 adapter->total_rx_packets, |
|
2834 adapter->total_rx_bytes); |
|
2835 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2836 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2837 adapter->rx_itr = low_latency; |
|
2838 |
|
2839 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2840 |
|
2841 switch (current_itr) { |
|
2842 /* counts and packets in update_itr are dependent on these numbers */ |
|
2843 case lowest_latency: |
|
2844 new_itr = 70000; |
|
2845 break; |
|
2846 case low_latency: |
|
2847 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2848 break; |
|
2849 case bulk_latency: |
|
2850 new_itr = 4000; |
|
2851 break; |
|
2852 default: |
|
2853 break; |
|
2854 } |
|
2855 |
|
2856 set_itr_now: |
|
2857 if (new_itr != adapter->itr) { |
|
2858 /* this attempts to bias the interrupt rate towards Bulk |
|
2859 * by adding intermediate steps when interrupt rate is |
|
2860 * increasing */ |
|
2861 new_itr = new_itr > adapter->itr ? |
|
2862 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2863 new_itr; |
|
2864 adapter->itr = new_itr; |
|
2865 E1000_WRITE_REG(hw, ITR, 1000000000 / (new_itr * 256)); |
|
2866 } |
|
2867 |
|
2868 return; |
|
2869 } |
|
2870 |
|
2871 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2872 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2873 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2874 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2875 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2876 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2877 |
|
2878 static int |
|
2879 e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
2880 struct sk_buff *skb) |
|
2881 { |
|
2882 struct e1000_context_desc *context_desc; |
|
2883 struct e1000_buffer *buffer_info; |
|
2884 unsigned int i; |
|
2885 uint32_t cmd_length = 0; |
|
2886 uint16_t ipcse = 0, tucse, mss; |
|
2887 uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
|
2888 int err; |
|
2889 |
|
2890 if (skb_is_gso(skb)) { |
|
2891 if (skb_header_cloned(skb)) { |
|
2892 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2893 if (err) |
|
2894 return err; |
|
2895 } |
|
2896 |
|
2897 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2898 mss = skb_shinfo(skb)->gso_size; |
|
2899 if (skb->protocol == htons(ETH_P_IP)) { |
|
2900 struct iphdr *iph = ip_hdr(skb); |
|
2901 iph->tot_len = 0; |
|
2902 iph->check = 0; |
|
2903 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2904 iph->daddr, 0, |
|
2905 IPPROTO_TCP, |
|
2906 0); |
|
2907 cmd_length = E1000_TXD_CMD_IP; |
|
2908 ipcse = skb_transport_offset(skb) - 1; |
|
2909 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2910 ipv6_hdr(skb)->payload_len = 0; |
|
2911 tcp_hdr(skb)->check = |
|
2912 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2913 &ipv6_hdr(skb)->daddr, |
|
2914 0, IPPROTO_TCP, 0); |
|
2915 ipcse = 0; |
|
2916 } |
|
2917 ipcss = skb_network_offset(skb); |
|
2918 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2919 tucss = skb_transport_offset(skb); |
|
2920 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2921 tucse = 0; |
|
2922 |
|
2923 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2924 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2925 |
|
2926 i = tx_ring->next_to_use; |
|
2927 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2928 buffer_info = &tx_ring->buffer_info[i]; |
|
2929 |
|
2930 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2931 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2932 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2933 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2934 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2935 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2936 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2937 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2938 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2939 |
|
2940 buffer_info->time_stamp = jiffies; |
|
2941 buffer_info->next_to_watch = i; |
|
2942 |
|
2943 if (++i == tx_ring->count) i = 0; |
|
2944 tx_ring->next_to_use = i; |
|
2945 |
|
2946 return TRUE; |
|
2947 } |
|
2948 return FALSE; |
|
2949 } |
|
2950 |
|
2951 static boolean_t |
|
2952 e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
2953 struct sk_buff *skb) |
|
2954 { |
|
2955 struct e1000_context_desc *context_desc; |
|
2956 struct e1000_buffer *buffer_info; |
|
2957 unsigned int i; |
|
2958 uint8_t css; |
|
2959 |
|
2960 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
|
2961 css = skb_transport_offset(skb); |
|
2962 |
|
2963 i = tx_ring->next_to_use; |
|
2964 buffer_info = &tx_ring->buffer_info[i]; |
|
2965 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2966 |
|
2967 context_desc->lower_setup.ip_config = 0; |
|
2968 context_desc->upper_setup.tcp_fields.tucss = css; |
|
2969 context_desc->upper_setup.tcp_fields.tucso = |
|
2970 css + skb->csum_offset; |
|
2971 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
2972 context_desc->tcp_seg_setup.data = 0; |
|
2973 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); |
|
2974 |
|
2975 buffer_info->time_stamp = jiffies; |
|
2976 buffer_info->next_to_watch = i; |
|
2977 |
|
2978 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2979 tx_ring->next_to_use = i; |
|
2980 |
|
2981 return TRUE; |
|
2982 } |
|
2983 |
|
2984 return FALSE; |
|
2985 } |
|
2986 |
|
2987 #define E1000_MAX_TXD_PWR 12 |
|
2988 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
2989 |
|
2990 static int |
|
2991 e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
2992 struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, |
|
2993 unsigned int nr_frags, unsigned int mss) |
|
2994 { |
|
2995 struct e1000_buffer *buffer_info; |
|
2996 unsigned int len = skb->len; |
|
2997 unsigned int offset = 0, size, count = 0, i; |
|
2998 unsigned int f; |
|
2999 len -= skb->data_len; |
|
3000 |
|
3001 i = tx_ring->next_to_use; |
|
3002 |
|
3003 while (len) { |
|
3004 buffer_info = &tx_ring->buffer_info[i]; |
|
3005 size = min(len, max_per_txd); |
|
3006 /* Workaround for Controller erratum -- |
|
3007 * descriptor for non-tso packet in a linear SKB that follows a |
|
3008 * tso gets written back prematurely before the data is fully |
|
3009 * DMA'd to the controller */ |
|
3010 if (!skb->data_len && tx_ring->last_tx_tso && |
|
3011 !skb_is_gso(skb)) { |
|
3012 tx_ring->last_tx_tso = 0; |
|
3013 size -= 4; |
|
3014 } |
|
3015 |
|
3016 /* Workaround for premature desc write-backs |
|
3017 * in TSO mode. Append 4-byte sentinel desc */ |
|
3018 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
3019 size -= 4; |
|
3020 /* work-around for errata 10 and it applies |
|
3021 * to all controllers in PCI-X mode |
|
3022 * The fix is to make sure that the first descriptor of a |
|
3023 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
3024 */ |
|
3025 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
|
3026 (size > 2015) && count == 0)) |
|
3027 size = 2015; |
|
3028 |
|
3029 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
3030 * terminating buffers within evenly-aligned dwords. */ |
|
3031 if (unlikely(adapter->pcix_82544 && |
|
3032 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
3033 size > 4)) |
|
3034 size -= 4; |
|
3035 |
|
3036 buffer_info->length = size; |
|
3037 buffer_info->dma = |
|
3038 pci_map_single(adapter->pdev, |
|
3039 skb->data + offset, |
|
3040 size, |
|
3041 PCI_DMA_TODEVICE); |
|
3042 buffer_info->time_stamp = jiffies; |
|
3043 buffer_info->next_to_watch = i; |
|
3044 |
|
3045 len -= size; |
|
3046 offset += size; |
|
3047 count++; |
|
3048 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3049 } |
|
3050 |
|
3051 for (f = 0; f < nr_frags; f++) { |
|
3052 struct skb_frag_struct *frag; |
|
3053 |
|
3054 frag = &skb_shinfo(skb)->frags[f]; |
|
3055 len = frag->size; |
|
3056 offset = frag->page_offset; |
|
3057 |
|
3058 while (len) { |
|
3059 buffer_info = &tx_ring->buffer_info[i]; |
|
3060 size = min(len, max_per_txd); |
|
3061 /* Workaround for premature desc write-backs |
|
3062 * in TSO mode. Append 4-byte sentinel desc */ |
|
3063 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
3064 size -= 4; |
|
3065 /* Workaround for potential 82544 hang in PCI-X. |
|
3066 * Avoid terminating buffers within evenly-aligned |
|
3067 * dwords. */ |
|
3068 if (unlikely(adapter->pcix_82544 && |
|
3069 !((unsigned long)(frag->page+offset+size-1) & 4) && |
|
3070 size > 4)) |
|
3071 size -= 4; |
|
3072 |
|
3073 buffer_info->length = size; |
|
3074 buffer_info->dma = |
|
3075 pci_map_page(adapter->pdev, |
|
3076 frag->page, |
|
3077 offset, |
|
3078 size, |
|
3079 PCI_DMA_TODEVICE); |
|
3080 buffer_info->time_stamp = jiffies; |
|
3081 buffer_info->next_to_watch = i; |
|
3082 |
|
3083 len -= size; |
|
3084 offset += size; |
|
3085 count++; |
|
3086 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3087 } |
|
3088 } |
|
3089 |
|
3090 i = (i == 0) ? tx_ring->count - 1 : i - 1; |
|
3091 tx_ring->buffer_info[i].skb = skb; |
|
3092 tx_ring->buffer_info[first].next_to_watch = i; |
|
3093 |
|
3094 return count; |
|
3095 } |
|
3096 |
|
3097 static void |
|
3098 e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
3099 int tx_flags, int count) |
|
3100 { |
|
3101 struct e1000_tx_desc *tx_desc = NULL; |
|
3102 struct e1000_buffer *buffer_info; |
|
3103 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
3104 unsigned int i; |
|
3105 |
|
3106 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
3107 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
3108 E1000_TXD_CMD_TSE; |
|
3109 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3110 |
|
3111 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
3112 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
3113 } |
|
3114 |
|
3115 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
3116 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
3117 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3118 } |
|
3119 |
|
3120 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
3121 txd_lower |= E1000_TXD_CMD_VLE; |
|
3122 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
3123 } |
|
3124 |
|
3125 i = tx_ring->next_to_use; |
|
3126 |
|
3127 while (count--) { |
|
3128 buffer_info = &tx_ring->buffer_info[i]; |
|
3129 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3130 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
3131 tx_desc->lower.data = |
|
3132 cpu_to_le32(txd_lower | buffer_info->length); |
|
3133 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
3134 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3135 } |
|
3136 |
|
3137 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
3138 |
|
3139 /* Force memory writes to complete before letting h/w |
|
3140 * know there are new descriptors to fetch. (Only |
|
3141 * applicable for weak-ordered memory model archs, |
|
3142 * such as IA-64). */ |
|
3143 wmb(); |
|
3144 |
|
3145 tx_ring->next_to_use = i; |
|
3146 writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
|
3147 /* we need this if more than one processor can write to our tail |
|
3148 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
3149 mmiowb(); |
|
3150 } |
|
3151 |
|
3152 /** |
|
3153 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
3154 * The workaround is to avoid queuing a large packet that would span |
|
3155 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
3156 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
3157 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
3158 * to the beginning of the Tx FIFO. |
|
3159 **/ |
|
3160 |
|
3161 #define E1000_FIFO_HDR 0x10 |
|
3162 #define E1000_82547_PAD_LEN 0x3E0 |
|
3163 |
|
3164 static int |
|
3165 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) |
|
3166 { |
|
3167 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
3168 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
3169 |
|
3170 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
3171 |
|
3172 if (adapter->link_duplex != HALF_DUPLEX) |
|
3173 goto no_fifo_stall_required; |
|
3174 |
|
3175 if (atomic_read(&adapter->tx_fifo_stall)) |
|
3176 return 1; |
|
3177 |
|
3178 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
3179 atomic_set(&adapter->tx_fifo_stall, 1); |
|
3180 return 1; |
|
3181 } |
|
3182 |
|
3183 no_fifo_stall_required: |
|
3184 adapter->tx_fifo_head += skb_fifo_len; |
|
3185 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
3186 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
3187 return 0; |
|
3188 } |
|
3189 |
|
3190 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
3191 static int |
|
3192 e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) |
|
3193 { |
|
3194 struct e1000_hw *hw = &adapter->hw; |
|
3195 uint16_t length, offset; |
|
3196 if (vlan_tx_tag_present(skb)) { |
|
3197 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
3198 ( adapter->hw.mng_cookie.status & |
|
3199 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) |
|
3200 return 0; |
|
3201 } |
|
3202 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
|
3203 struct ethhdr *eth = (struct ethhdr *) skb->data; |
|
3204 if ((htons(ETH_P_IP) == eth->h_proto)) { |
|
3205 const struct iphdr *ip = |
|
3206 (struct iphdr *)((uint8_t *)skb->data+14); |
|
3207 if (IPPROTO_UDP == ip->protocol) { |
|
3208 struct udphdr *udp = |
|
3209 (struct udphdr *)((uint8_t *)ip + |
|
3210 (ip->ihl << 2)); |
|
3211 if (ntohs(udp->dest) == 67) { |
|
3212 offset = (uint8_t *)udp + 8 - skb->data; |
|
3213 length = skb->len - offset; |
|
3214 |
|
3215 return e1000_mng_write_dhcp_info(hw, |
|
3216 (uint8_t *)udp + 8, |
|
3217 length); |
|
3218 } |
|
3219 } |
|
3220 } |
|
3221 } |
|
3222 return 0; |
|
3223 } |
|
3224 |
|
3225 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
3226 { |
|
3227 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3228 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
3229 |
|
3230 netif_stop_queue(netdev); |
|
3231 /* Herbert's original patch had: |
|
3232 * smp_mb__after_netif_stop_queue(); |
|
3233 * but since that doesn't exist yet, just open code it. */ |
|
3234 smp_mb(); |
|
3235 |
|
3236 /* We need to check again in a case another CPU has just |
|
3237 * made room available. */ |
|
3238 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
3239 return -EBUSY; |
|
3240 |
|
3241 /* A reprieve! */ |
|
3242 netif_start_queue(netdev); |
|
3243 ++adapter->restart_queue; |
|
3244 return 0; |
|
3245 } |
|
3246 |
|
3247 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
3248 struct e1000_tx_ring *tx_ring, int size) |
|
3249 { |
|
3250 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
3251 return 0; |
|
3252 return __e1000_maybe_stop_tx(netdev, size); |
|
3253 } |
|
3254 |
|
3255 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
3256 static int |
|
3257 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
|
3258 { |
|
3259 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3260 struct e1000_tx_ring *tx_ring; |
|
3261 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
3262 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
3263 unsigned int tx_flags = 0; |
|
3264 unsigned int len = skb->len; |
|
3265 unsigned long flags; |
|
3266 unsigned int nr_frags = 0; |
|
3267 unsigned int mss = 0; |
|
3268 int count = 0; |
|
3269 int tso; |
|
3270 unsigned int f; |
|
3271 len -= skb->data_len; |
|
3272 |
|
3273 /* This goes back to the question of how to logically map a tx queue |
|
3274 * to a flow. Right now, performance is impacted slightly negatively |
|
3275 * if using multiple tx queues. If the stack breaks away from a |
|
3276 * single qdisc implementation, we can look at this again. */ |
|
3277 tx_ring = adapter->tx_ring; |
|
3278 |
|
3279 if (unlikely(skb->len <= 0)) { |
|
3280 dev_kfree_skb_any(skb); |
|
3281 return NETDEV_TX_OK; |
|
3282 } |
|
3283 |
|
3284 /* 82571 and newer doesn't need the workaround that limited descriptor |
|
3285 * length to 4kB */ |
|
3286 if (adapter->hw.mac_type >= e1000_82571) |
|
3287 max_per_txd = 8192; |
|
3288 |
|
3289 mss = skb_shinfo(skb)->gso_size; |
|
3290 /* The controller does a simple calculation to |
|
3291 * make sure there is enough room in the FIFO before |
|
3292 * initiating the DMA for each buffer. The calc is: |
|
3293 * 4 = ceil(buffer len/mss). To make sure we don't |
|
3294 * overrun the FIFO, adjust the max buffer len if mss |
|
3295 * drops. */ |
|
3296 if (mss) { |
|
3297 uint8_t hdr_len; |
|
3298 max_per_txd = min(mss << 2, max_per_txd); |
|
3299 max_txd_pwr = fls(max_per_txd) - 1; |
|
3300 |
|
3301 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
3302 * points to just header, pull a few bytes of payload from |
|
3303 * frags into skb->data */ |
|
3304 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
3305 if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { |
|
3306 switch (adapter->hw.mac_type) { |
|
3307 unsigned int pull_size; |
|
3308 case e1000_82544: |
|
3309 /* Make sure we have room to chop off 4 bytes, |
|
3310 * and that the end alignment will work out to |
|
3311 * this hardware's requirements |
|
3312 * NOTE: this is a TSO only workaround |
|
3313 * if end byte alignment not correct move us |
|
3314 * into the next dword */ |
|
3315 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
3316 break; |
|
3317 /* fall through */ |
|
3318 case e1000_82571: |
|
3319 case e1000_82572: |
|
3320 case e1000_82573: |
|
3321 case e1000_ich8lan: |
|
3322 pull_size = min((unsigned int)4, skb->data_len); |
|
3323 if (!__pskb_pull_tail(skb, pull_size)) { |
|
3324 DPRINTK(DRV, ERR, |
|
3325 "__pskb_pull_tail failed.\n"); |
|
3326 dev_kfree_skb_any(skb); |
|
3327 return NETDEV_TX_OK; |
|
3328 } |
|
3329 len = skb->len - skb->data_len; |
|
3330 break; |
|
3331 default: |
|
3332 /* do nothing */ |
|
3333 break; |
|
3334 } |
|
3335 } |
|
3336 } |
|
3337 |
|
3338 /* reserve a descriptor for the offload context */ |
|
3339 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
3340 count++; |
|
3341 count++; |
|
3342 |
|
3343 /* Controller Erratum workaround */ |
|
3344 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
3345 count++; |
|
3346 |
|
3347 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
3348 |
|
3349 if (adapter->pcix_82544) |
|
3350 count++; |
|
3351 |
|
3352 /* work-around for errata 10 and it applies to all controllers |
|
3353 * in PCI-X mode, so add one more descriptor to the count |
|
3354 */ |
|
3355 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
|
3356 (len > 2015))) |
|
3357 count++; |
|
3358 |
|
3359 nr_frags = skb_shinfo(skb)->nr_frags; |
|
3360 for (f = 0; f < nr_frags; f++) |
|
3361 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3362 max_txd_pwr); |
|
3363 if (adapter->pcix_82544) |
|
3364 count += nr_frags; |
|
3365 |
|
3366 |
|
3367 if (adapter->hw.tx_pkt_filtering && |
|
3368 (adapter->hw.mac_type == e1000_82573)) |
|
3369 e1000_transfer_dhcp_info(adapter, skb); |
|
3370 |
|
3371 if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) |
|
3372 /* Collision - tell upper layer to requeue */ |
|
3373 return NETDEV_TX_LOCKED; |
|
3374 |
|
3375 /* need: count + 2 desc gap to keep tail from touching |
|
3376 * head, otherwise try next time */ |
|
3377 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) { |
|
3378 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3379 return NETDEV_TX_BUSY; |
|
3380 } |
|
3381 |
|
3382 if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
|
3383 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3384 netif_stop_queue(netdev); |
|
3385 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
3386 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3387 return NETDEV_TX_BUSY; |
|
3388 } |
|
3389 } |
|
3390 |
|
3391 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
|
3392 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3393 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3394 } |
|
3395 |
|
3396 first = tx_ring->next_to_use; |
|
3397 |
|
3398 tso = e1000_tso(adapter, tx_ring, skb); |
|
3399 if (tso < 0) { |
|
3400 dev_kfree_skb_any(skb); |
|
3401 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3402 return NETDEV_TX_OK; |
|
3403 } |
|
3404 |
|
3405 if (likely(tso)) { |
|
3406 tx_ring->last_tx_tso = 1; |
|
3407 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3408 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3409 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3410 |
|
3411 /* Old method was to assume IPv4 packet by default if TSO was enabled. |
|
3412 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
3413 * no longer assume, we must. */ |
|
3414 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3415 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3416 |
|
3417 e1000_tx_queue(adapter, tx_ring, tx_flags, |
|
3418 e1000_tx_map(adapter, tx_ring, skb, first, |
|
3419 max_per_txd, nr_frags, mss)); |
|
3420 |
|
3421 netdev->trans_start = jiffies; |
|
3422 |
|
3423 /* Make sure there is space in the ring for the next send. */ |
|
3424 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3425 |
|
3426 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3427 return NETDEV_TX_OK; |
|
3428 } |
|
3429 |
|
3430 /** |
|
3431 * e1000_tx_timeout - Respond to a Tx Hang |
|
3432 * @netdev: network interface device structure |
|
3433 **/ |
|
3434 |
|
3435 static void |
|
3436 e1000_tx_timeout(struct net_device *netdev) |
|
3437 { |
|
3438 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3439 |
|
3440 /* Do the reset outside of interrupt context */ |
|
3441 adapter->tx_timeout_count++; |
|
3442 schedule_work(&adapter->reset_task); |
|
3443 } |
|
3444 |
|
3445 static void |
|
3446 e1000_reset_task(struct work_struct *work) |
|
3447 { |
|
3448 struct e1000_adapter *adapter = |
|
3449 container_of(work, struct e1000_adapter, reset_task); |
|
3450 |
|
3451 e1000_reinit_locked(adapter); |
|
3452 } |
|
3453 |
|
3454 /** |
|
3455 * e1000_get_stats - Get System Network Statistics |
|
3456 * @netdev: network interface device structure |
|
3457 * |
|
3458 * Returns the address of the device statistics structure. |
|
3459 * The statistics are actually updated from the timer callback. |
|
3460 **/ |
|
3461 |
|
3462 static struct net_device_stats * |
|
3463 e1000_get_stats(struct net_device *netdev) |
|
3464 { |
|
3465 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3466 |
|
3467 /* only return the current stats */ |
|
3468 return &adapter->net_stats; |
|
3469 } |
|
3470 |
|
3471 /** |
|
3472 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3473 * @netdev: network interface device structure |
|
3474 * @new_mtu: new value for maximum frame size |
|
3475 * |
|
3476 * Returns 0 on success, negative on failure |
|
3477 **/ |
|
3478 |
|
3479 static int |
|
3480 e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3481 { |
|
3482 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3483 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3484 uint16_t eeprom_data = 0; |
|
3485 |
|
3486 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3487 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3488 DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); |
|
3489 return -EINVAL; |
|
3490 } |
|
3491 |
|
3492 /* Adapter-specific max frame size limits. */ |
|
3493 switch (adapter->hw.mac_type) { |
|
3494 case e1000_undefined ... e1000_82542_rev2_1: |
|
3495 case e1000_ich8lan: |
|
3496 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
3497 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); |
|
3498 return -EINVAL; |
|
3499 } |
|
3500 break; |
|
3501 case e1000_82573: |
|
3502 /* Jumbo Frames not supported if: |
|
3503 * - this is not an 82573L device |
|
3504 * - ASPM is enabled in any way (0x1A bits 3:2) */ |
|
3505 e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, |
|
3506 &eeprom_data); |
|
3507 if ((adapter->hw.device_id != E1000_DEV_ID_82573L) || |
|
3508 (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { |
|
3509 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
3510 DPRINTK(PROBE, ERR, |
|
3511 "Jumbo Frames not supported.\n"); |
|
3512 return -EINVAL; |
|
3513 } |
|
3514 break; |
|
3515 } |
|
3516 /* ERT will be enabled later to enable wire speed receives */ |
|
3517 |
|
3518 /* fall through to get support */ |
|
3519 case e1000_82571: |
|
3520 case e1000_82572: |
|
3521 case e1000_80003es2lan: |
|
3522 #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
|
3523 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
|
3524 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); |
|
3525 return -EINVAL; |
|
3526 } |
|
3527 break; |
|
3528 default: |
|
3529 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3530 break; |
|
3531 } |
|
3532 |
|
3533 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3534 * means we reserve 2 more, this pushes us to allocate from the next |
|
3535 * larger slab size |
|
3536 * i.e. RXBUFFER_2048 --> size-4096 slab */ |
|
3537 |
|
3538 if (max_frame <= E1000_RXBUFFER_256) |
|
3539 adapter->rx_buffer_len = E1000_RXBUFFER_256; |
|
3540 else if (max_frame <= E1000_RXBUFFER_512) |
|
3541 adapter->rx_buffer_len = E1000_RXBUFFER_512; |
|
3542 else if (max_frame <= E1000_RXBUFFER_1024) |
|
3543 adapter->rx_buffer_len = E1000_RXBUFFER_1024; |
|
3544 else if (max_frame <= E1000_RXBUFFER_2048) |
|
3545 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3546 else if (max_frame <= E1000_RXBUFFER_4096) |
|
3547 adapter->rx_buffer_len = E1000_RXBUFFER_4096; |
|
3548 else if (max_frame <= E1000_RXBUFFER_8192) |
|
3549 adapter->rx_buffer_len = E1000_RXBUFFER_8192; |
|
3550 else if (max_frame <= E1000_RXBUFFER_16384) |
|
3551 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3552 |
|
3553 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3554 if (!adapter->hw.tbi_compatibility_on && |
|
3555 ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || |
|
3556 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3557 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3558 |
|
3559 netdev->mtu = new_mtu; |
|
3560 adapter->hw.max_frame_size = max_frame; |
|
3561 |
|
3562 if (netif_running(netdev)) |
|
3563 e1000_reinit_locked(adapter); |
|
3564 |
|
3565 return 0; |
|
3566 } |
|
3567 |
|
3568 /** |
|
3569 * e1000_update_stats - Update the board statistics counters |
|
3570 * @adapter: board private structure |
|
3571 **/ |
|
3572 |
|
3573 void |
|
3574 e1000_update_stats(struct e1000_adapter *adapter) |
|
3575 { |
|
3576 struct e1000_hw *hw = &adapter->hw; |
|
3577 struct pci_dev *pdev = adapter->pdev; |
|
3578 unsigned long flags; |
|
3579 uint16_t phy_tmp; |
|
3580 |
|
3581 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3582 |
|
3583 /* |
|
3584 * Prevent stats update while adapter is being reset, or if the pci |
|
3585 * connection is down. |
|
3586 */ |
|
3587 if (adapter->link_speed == 0) |
|
3588 return; |
|
3589 if (pci_channel_offline(pdev)) |
|
3590 return; |
|
3591 |
|
3592 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3593 |
|
3594 /* these counters are modified from e1000_adjust_tbi_stats, |
|
3595 * called from the interrupt context, so they must only |
|
3596 * be written while holding adapter->stats_lock |
|
3597 */ |
|
3598 |
|
3599 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); |
|
3600 adapter->stats.gprc += E1000_READ_REG(hw, GPRC); |
|
3601 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); |
|
3602 adapter->stats.gorch += E1000_READ_REG(hw, GORCH); |
|
3603 adapter->stats.bprc += E1000_READ_REG(hw, BPRC); |
|
3604 adapter->stats.mprc += E1000_READ_REG(hw, MPRC); |
|
3605 adapter->stats.roc += E1000_READ_REG(hw, ROC); |
|
3606 |
|
3607 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
3608 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); |
|
3609 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); |
|
3610 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); |
|
3611 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); |
|
3612 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); |
|
3613 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); |
|
3614 } |
|
3615 |
|
3616 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); |
|
3617 adapter->stats.mpc += E1000_READ_REG(hw, MPC); |
|
3618 adapter->stats.scc += E1000_READ_REG(hw, SCC); |
|
3619 adapter->stats.ecol += E1000_READ_REG(hw, ECOL); |
|
3620 adapter->stats.mcc += E1000_READ_REG(hw, MCC); |
|
3621 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); |
|
3622 adapter->stats.dc += E1000_READ_REG(hw, DC); |
|
3623 adapter->stats.sec += E1000_READ_REG(hw, SEC); |
|
3624 adapter->stats.rlec += E1000_READ_REG(hw, RLEC); |
|
3625 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); |
|
3626 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); |
|
3627 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); |
|
3628 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); |
|
3629 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); |
|
3630 adapter->stats.gptc += E1000_READ_REG(hw, GPTC); |
|
3631 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); |
|
3632 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); |
|
3633 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); |
|
3634 adapter->stats.ruc += E1000_READ_REG(hw, RUC); |
|
3635 adapter->stats.rfc += E1000_READ_REG(hw, RFC); |
|
3636 adapter->stats.rjc += E1000_READ_REG(hw, RJC); |
|
3637 adapter->stats.torl += E1000_READ_REG(hw, TORL); |
|
3638 adapter->stats.torh += E1000_READ_REG(hw, TORH); |
|
3639 adapter->stats.totl += E1000_READ_REG(hw, TOTL); |
|
3640 adapter->stats.toth += E1000_READ_REG(hw, TOTH); |
|
3641 adapter->stats.tpr += E1000_READ_REG(hw, TPR); |
|
3642 |
|
3643 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
3644 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); |
|
3645 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); |
|
3646 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); |
|
3647 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); |
|
3648 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); |
|
3649 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); |
|
3650 } |
|
3651 |
|
3652 adapter->stats.mptc += E1000_READ_REG(hw, MPTC); |
|
3653 adapter->stats.bptc += E1000_READ_REG(hw, BPTC); |
|
3654 |
|
3655 /* used for adaptive IFS */ |
|
3656 |
|
3657 hw->tx_packet_delta = E1000_READ_REG(hw, TPT); |
|
3658 adapter->stats.tpt += hw->tx_packet_delta; |
|
3659 hw->collision_delta = E1000_READ_REG(hw, COLC); |
|
3660 adapter->stats.colc += hw->collision_delta; |
|
3661 |
|
3662 if (hw->mac_type >= e1000_82543) { |
|
3663 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
|
3664 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); |
|
3665 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); |
|
3666 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); |
|
3667 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); |
|
3668 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); |
|
3669 } |
|
3670 if (hw->mac_type > e1000_82547_rev_2) { |
|
3671 adapter->stats.iac += E1000_READ_REG(hw, IAC); |
|
3672 adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); |
|
3673 |
|
3674 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
3675 adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); |
|
3676 adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); |
|
3677 adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); |
|
3678 adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); |
|
3679 adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); |
|
3680 adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); |
|
3681 adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); |
|
3682 } |
|
3683 } |
|
3684 |
|
3685 /* Fill out the OS statistics structure */ |
|
3686 adapter->net_stats.rx_packets = adapter->stats.gprc; |
|
3687 adapter->net_stats.tx_packets = adapter->stats.gptc; |
|
3688 adapter->net_stats.rx_bytes = adapter->stats.gorcl; |
|
3689 adapter->net_stats.tx_bytes = adapter->stats.gotcl; |
|
3690 adapter->net_stats.multicast = adapter->stats.mprc; |
|
3691 adapter->net_stats.collisions = adapter->stats.colc; |
|
3692 |
|
3693 /* Rx Errors */ |
|
3694 |
|
3695 /* RLEC on some newer hardware can be incorrect so build |
|
3696 * our own version based on RUC and ROC */ |
|
3697 adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
|
3698 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3699 adapter->stats.ruc + adapter->stats.roc + |
|
3700 adapter->stats.cexterr; |
|
3701 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3702 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; |
|
3703 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3704 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3705 adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
|
3706 |
|
3707 /* Tx Errors */ |
|
3708 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3709 adapter->net_stats.tx_errors = adapter->stats.txerrc; |
|
3710 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
|
3711 adapter->net_stats.tx_window_errors = adapter->stats.latecol; |
|
3712 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3713 if (adapter->hw.bad_tx_carr_stats_fd && |
|
3714 adapter->link_duplex == FULL_DUPLEX) { |
|
3715 adapter->net_stats.tx_carrier_errors = 0; |
|
3716 adapter->stats.tncrs = 0; |
|
3717 } |
|
3718 |
|
3719 /* Tx Dropped needs to be maintained elsewhere */ |
|
3720 |
|
3721 /* Phy Stats */ |
|
3722 if (hw->media_type == e1000_media_type_copper) { |
|
3723 if ((adapter->link_speed == SPEED_1000) && |
|
3724 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3725 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3726 adapter->phy_stats.idle_errors += phy_tmp; |
|
3727 } |
|
3728 |
|
3729 if ((hw->mac_type <= e1000_82546) && |
|
3730 (hw->phy_type == e1000_phy_m88) && |
|
3731 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3732 adapter->phy_stats.receive_errors += phy_tmp; |
|
3733 } |
|
3734 |
|
3735 /* Management Stats */ |
|
3736 if (adapter->hw.has_smbus) { |
|
3737 adapter->stats.mgptc += E1000_READ_REG(hw, MGTPTC); |
|
3738 adapter->stats.mgprc += E1000_READ_REG(hw, MGTPRC); |
|
3739 adapter->stats.mgpdc += E1000_READ_REG(hw, MGTPDC); |
|
3740 } |
|
3741 |
|
3742 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3743 } |
|
3744 |
|
3745 /** |
|
3746 * e1000_intr_msi - Interrupt Handler |
|
3747 * @irq: interrupt number |
|
3748 * @data: pointer to a network interface device structure |
|
3749 **/ |
|
3750 |
|
3751 static irqreturn_t |
|
3752 e1000_intr_msi(int irq, void *data) |
|
3753 { |
|
3754 struct net_device *netdev = data; |
|
3755 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3756 struct e1000_hw *hw = &adapter->hw; |
|
3757 #ifndef CONFIG_E1000_NAPI |
|
3758 int i; |
|
3759 #endif |
|
3760 uint32_t icr = E1000_READ_REG(hw, ICR); |
|
3761 |
|
3762 #ifdef CONFIG_E1000_NAPI |
|
3763 /* read ICR disables interrupts using IAM, so keep up with our |
|
3764 * enable/disable accounting */ |
|
3765 atomic_inc(&adapter->irq_sem); |
|
3766 #endif |
|
3767 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
|
3768 hw->get_link_status = 1; |
|
3769 /* 80003ES2LAN workaround-- For packet buffer work-around on |
|
3770 * link down event; disable receives here in the ISR and reset |
|
3771 * adapter in watchdog */ |
|
3772 if (netif_carrier_ok(netdev) && |
|
3773 (adapter->hw.mac_type == e1000_80003es2lan)) { |
|
3774 /* disable receives */ |
|
3775 uint32_t rctl = E1000_READ_REG(hw, RCTL); |
|
3776 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); |
|
3777 } |
|
3778 /* guard against interrupt when we're going down */ |
|
3779 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3780 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3781 } |
|
3782 |
|
3783 #ifdef CONFIG_E1000_NAPI |
|
3784 if (likely(netif_rx_schedule_prep(netdev))) { |
|
3785 adapter->total_tx_bytes = 0; |
|
3786 adapter->total_tx_packets = 0; |
|
3787 adapter->total_rx_bytes = 0; |
|
3788 adapter->total_rx_packets = 0; |
|
3789 __netif_rx_schedule(netdev); |
|
3790 } else |
|
3791 e1000_irq_enable(adapter); |
|
3792 #else |
|
3793 adapter->total_tx_bytes = 0; |
|
3794 adapter->total_rx_bytes = 0; |
|
3795 adapter->total_tx_packets = 0; |
|
3796 adapter->total_rx_packets = 0; |
|
3797 |
|
3798 for (i = 0; i < E1000_MAX_INTR; i++) |
|
3799 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & |
|
3800 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
3801 break; |
|
3802 |
|
3803 if (likely(adapter->itr_setting & 3)) |
|
3804 e1000_set_itr(adapter); |
|
3805 #endif |
|
3806 |
|
3807 return IRQ_HANDLED; |
|
3808 } |
|
3809 |
|
3810 /** |
|
3811 * e1000_intr - Interrupt Handler |
|
3812 * @irq: interrupt number |
|
3813 * @data: pointer to a network interface device structure |
|
3814 **/ |
|
3815 |
|
3816 static irqreturn_t |
|
3817 e1000_intr(int irq, void *data) |
|
3818 { |
|
3819 struct net_device *netdev = data; |
|
3820 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3821 struct e1000_hw *hw = &adapter->hw; |
|
3822 uint32_t rctl, icr = E1000_READ_REG(hw, ICR); |
|
3823 #ifndef CONFIG_E1000_NAPI |
|
3824 int i; |
|
3825 #endif |
|
3826 if (unlikely(!icr)) |
|
3827 return IRQ_NONE; /* Not our interrupt */ |
|
3828 |
|
3829 #ifdef CONFIG_E1000_NAPI |
|
3830 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
3831 * not set, then the adapter didn't send an interrupt */ |
|
3832 if (unlikely(hw->mac_type >= e1000_82571 && |
|
3833 !(icr & E1000_ICR_INT_ASSERTED))) |
|
3834 return IRQ_NONE; |
|
3835 |
|
3836 /* Interrupt Auto-Mask...upon reading ICR, |
|
3837 * interrupts are masked. No need for the |
|
3838 * IMC write, but it does mean we should |
|
3839 * account for it ASAP. */ |
|
3840 if (likely(hw->mac_type >= e1000_82571)) |
|
3841 atomic_inc(&adapter->irq_sem); |
|
3842 #endif |
|
3843 |
|
3844 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3845 hw->get_link_status = 1; |
|
3846 /* 80003ES2LAN workaround-- |
|
3847 * For packet buffer work-around on link down event; |
|
3848 * disable receives here in the ISR and |
|
3849 * reset adapter in watchdog |
|
3850 */ |
|
3851 if (netif_carrier_ok(netdev) && |
|
3852 (adapter->hw.mac_type == e1000_80003es2lan)) { |
|
3853 /* disable receives */ |
|
3854 rctl = E1000_READ_REG(hw, RCTL); |
|
3855 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); |
|
3856 } |
|
3857 /* guard against interrupt when we're going down */ |
|
3858 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3859 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3860 } |
|
3861 |
|
3862 #ifdef CONFIG_E1000_NAPI |
|
3863 if (unlikely(hw->mac_type < e1000_82571)) { |
|
3864 /* disable interrupts, without the synchronize_irq bit */ |
|
3865 atomic_inc(&adapter->irq_sem); |
|
3866 E1000_WRITE_REG(hw, IMC, ~0); |
|
3867 E1000_WRITE_FLUSH(hw); |
|
3868 } |
|
3869 if (likely(netif_rx_schedule_prep(netdev))) { |
|
3870 adapter->total_tx_bytes = 0; |
|
3871 adapter->total_tx_packets = 0; |
|
3872 adapter->total_rx_bytes = 0; |
|
3873 adapter->total_rx_packets = 0; |
|
3874 __netif_rx_schedule(netdev); |
|
3875 } else |
|
3876 /* this really should not happen! if it does it is basically a |
|
3877 * bug, but not a hard error, so enable ints and continue */ |
|
3878 e1000_irq_enable(adapter); |
|
3879 #else |
|
3880 /* Writing IMC and IMS is needed for 82547. |
|
3881 * Due to Hub Link bus being occupied, an interrupt |
|
3882 * de-assertion message is not able to be sent. |
|
3883 * When an interrupt assertion message is generated later, |
|
3884 * two messages are re-ordered and sent out. |
|
3885 * That causes APIC to think 82547 is in de-assertion |
|
3886 * state, while 82547 is in assertion state, resulting |
|
3887 * in dead lock. Writing IMC forces 82547 into |
|
3888 * de-assertion state. |
|
3889 */ |
|
3890 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { |
|
3891 atomic_inc(&adapter->irq_sem); |
|
3892 E1000_WRITE_REG(hw, IMC, ~0); |
|
3893 } |
|
3894 |
|
3895 adapter->total_tx_bytes = 0; |
|
3896 adapter->total_rx_bytes = 0; |
|
3897 adapter->total_tx_packets = 0; |
|
3898 adapter->total_rx_packets = 0; |
|
3899 |
|
3900 for (i = 0; i < E1000_MAX_INTR; i++) |
|
3901 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & |
|
3902 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
3903 break; |
|
3904 |
|
3905 if (likely(adapter->itr_setting & 3)) |
|
3906 e1000_set_itr(adapter); |
|
3907 |
|
3908 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
|
3909 e1000_irq_enable(adapter); |
|
3910 |
|
3911 #endif |
|
3912 return IRQ_HANDLED; |
|
3913 } |
|
3914 |
|
3915 #ifdef CONFIG_E1000_NAPI |
|
3916 /** |
|
3917 * e1000_clean - NAPI Rx polling callback |
|
3918 * @adapter: board private structure |
|
3919 **/ |
|
3920 |
|
3921 static int |
|
3922 e1000_clean(struct net_device *poll_dev, int *budget) |
|
3923 { |
|
3924 struct e1000_adapter *adapter; |
|
3925 int work_to_do = min(*budget, poll_dev->quota); |
|
3926 int tx_cleaned = 0, work_done = 0; |
|
3927 |
|
3928 /* Must NOT use netdev_priv macro here. */ |
|
3929 adapter = poll_dev->priv; |
|
3930 |
|
3931 /* Keep link state information with original netdev */ |
|
3932 if (!netif_carrier_ok(poll_dev)) |
|
3933 goto quit_polling; |
|
3934 |
|
3935 /* e1000_clean is called per-cpu. This lock protects |
|
3936 * tx_ring[0] from being cleaned by multiple cpus |
|
3937 * simultaneously. A failure obtaining the lock means |
|
3938 * tx_ring[0] is currently being cleaned anyway. */ |
|
3939 if (spin_trylock(&adapter->tx_queue_lock)) { |
|
3940 tx_cleaned = e1000_clean_tx_irq(adapter, |
|
3941 &adapter->tx_ring[0]); |
|
3942 spin_unlock(&adapter->tx_queue_lock); |
|
3943 } |
|
3944 |
|
3945 adapter->clean_rx(adapter, &adapter->rx_ring[0], |
|
3946 &work_done, work_to_do); |
|
3947 |
|
3948 *budget -= work_done; |
|
3949 poll_dev->quota -= work_done; |
|
3950 |
|
3951 /* If no Tx and not enough Rx work done, exit the polling mode */ |
|
3952 if ((!tx_cleaned && (work_done == 0)) || |
|
3953 !netif_running(poll_dev)) { |
|
3954 quit_polling: |
|
3955 if (likely(adapter->itr_setting & 3)) |
|
3956 e1000_set_itr(adapter); |
|
3957 netif_rx_complete(poll_dev); |
|
3958 e1000_irq_enable(adapter); |
|
3959 return 0; |
|
3960 } |
|
3961 |
|
3962 return 1; |
|
3963 } |
|
3964 |
|
3965 #endif |
|
3966 /** |
|
3967 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
3968 * @adapter: board private structure |
|
3969 **/ |
|
3970 |
|
3971 static boolean_t |
|
3972 e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
3973 struct e1000_tx_ring *tx_ring) |
|
3974 { |
|
3975 struct net_device *netdev = adapter->netdev; |
|
3976 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
3977 struct e1000_buffer *buffer_info; |
|
3978 unsigned int i, eop; |
|
3979 #ifdef CONFIG_E1000_NAPI |
|
3980 unsigned int count = 0; |
|
3981 #endif |
|
3982 boolean_t cleaned = FALSE; |
|
3983 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
3984 |
|
3985 i = tx_ring->next_to_clean; |
|
3986 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3987 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3988 |
|
3989 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
|
3990 for (cleaned = FALSE; !cleaned; ) { |
|
3991 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3992 buffer_info = &tx_ring->buffer_info[i]; |
|
3993 cleaned = (i == eop); |
|
3994 |
|
3995 if (cleaned) { |
|
3996 struct sk_buff *skb = buffer_info->skb; |
|
3997 unsigned int segs, bytecount; |
|
3998 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
3999 /* multiply data chunks by size of headers */ |
|
4000 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
4001 skb->len; |
|
4002 total_tx_packets += segs; |
|
4003 total_tx_bytes += bytecount; |
|
4004 } |
|
4005 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
4006 tx_desc->upper.data = 0; |
|
4007 |
|
4008 if (unlikely(++i == tx_ring->count)) i = 0; |
|
4009 } |
|
4010 |
|
4011 eop = tx_ring->buffer_info[i].next_to_watch; |
|
4012 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
4013 #ifdef CONFIG_E1000_NAPI |
|
4014 #define E1000_TX_WEIGHT 64 |
|
4015 /* weight of a sort for tx, to avoid endless transmit cleanup */ |
|
4016 if (count++ == E1000_TX_WEIGHT) break; |
|
4017 #endif |
|
4018 } |
|
4019 |
|
4020 tx_ring->next_to_clean = i; |
|
4021 |
|
4022 #define TX_WAKE_THRESHOLD 32 |
|
4023 if (unlikely(cleaned && netif_carrier_ok(netdev) && |
|
4024 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
4025 /* Make sure that anybody stopping the queue after this |
|
4026 * sees the new next_to_clean. |
|
4027 */ |
|
4028 smp_mb(); |
|
4029 if (netif_queue_stopped(netdev)) { |
|
4030 netif_wake_queue(netdev); |
|
4031 ++adapter->restart_queue; |
|
4032 } |
|
4033 } |
|
4034 |
|
4035 if (adapter->detect_tx_hung) { |
|
4036 /* Detect a transmit hang in hardware, this serializes the |
|
4037 * check with the clearing of time_stamp and movement of i */ |
|
4038 adapter->detect_tx_hung = FALSE; |
|
4039 if (tx_ring->buffer_info[eop].dma && |
|
4040 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + |
|
4041 (adapter->tx_timeout_factor * HZ)) |
|
4042 && !(E1000_READ_REG(&adapter->hw, STATUS) & |
|
4043 E1000_STATUS_TXOFF)) { |
|
4044 |
|
4045 /* detected Tx unit hang */ |
|
4046 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
|
4047 " Tx Queue <%lu>\n" |
|
4048 " TDH <%x>\n" |
|
4049 " TDT <%x>\n" |
|
4050 " next_to_use <%x>\n" |
|
4051 " next_to_clean <%x>\n" |
|
4052 "buffer_info[next_to_clean]\n" |
|
4053 " time_stamp <%lx>\n" |
|
4054 " next_to_watch <%x>\n" |
|
4055 " jiffies <%lx>\n" |
|
4056 " next_to_watch.status <%x>\n", |
|
4057 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
4058 sizeof(struct e1000_tx_ring)), |
|
4059 readl(adapter->hw.hw_addr + tx_ring->tdh), |
|
4060 readl(adapter->hw.hw_addr + tx_ring->tdt), |
|
4061 tx_ring->next_to_use, |
|
4062 tx_ring->next_to_clean, |
|
4063 tx_ring->buffer_info[eop].time_stamp, |
|
4064 eop, |
|
4065 jiffies, |
|
4066 eop_desc->upper.fields.status); |
|
4067 netif_stop_queue(netdev); |
|
4068 } |
|
4069 } |
|
4070 adapter->total_tx_bytes += total_tx_bytes; |
|
4071 adapter->total_tx_packets += total_tx_packets; |
|
4072 return cleaned; |
|
4073 } |
|
4074 |
|
4075 /** |
|
4076 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
4077 * @adapter: board private structure |
|
4078 * @status_err: receive descriptor status and error fields |
|
4079 * @csum: receive descriptor csum field |
|
4080 * @sk_buff: socket buffer with received data |
|
4081 **/ |
|
4082 |
|
4083 static void |
|
4084 e1000_rx_checksum(struct e1000_adapter *adapter, |
|
4085 uint32_t status_err, uint32_t csum, |
|
4086 struct sk_buff *skb) |
|
4087 { |
|
4088 uint16_t status = (uint16_t)status_err; |
|
4089 uint8_t errors = (uint8_t)(status_err >> 24); |
|
4090 skb->ip_summed = CHECKSUM_NONE; |
|
4091 |
|
4092 /* 82543 or newer only */ |
|
4093 if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
|
4094 /* Ignore Checksum bit is set */ |
|
4095 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
4096 /* TCP/UDP checksum error bit is set */ |
|
4097 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
4098 /* let the stack verify checksum errors */ |
|
4099 adapter->hw_csum_err++; |
|
4100 return; |
|
4101 } |
|
4102 /* TCP/UDP Checksum has not been calculated */ |
|
4103 if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
|
4104 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
4105 return; |
|
4106 } else { |
|
4107 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
4108 return; |
|
4109 } |
|
4110 /* It must be a TCP or UDP packet with a valid checksum */ |
|
4111 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
4112 /* TCP checksum is good */ |
|
4113 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
4114 } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
|
4115 /* IP fragment with UDP payload */ |
|
4116 /* Hardware complements the payload checksum, so we undo it |
|
4117 * and then put the value in host order for further stack use. |
|
4118 */ |
|
4119 csum = ntohl(csum ^ 0xFFFF); |
|
4120 skb->csum = csum; |
|
4121 skb->ip_summed = CHECKSUM_COMPLETE; |
|
4122 } |
|
4123 adapter->hw_csum_good++; |
|
4124 } |
|
4125 |
|
4126 /** |
|
4127 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
4128 * @adapter: board private structure |
|
4129 **/ |
|
4130 |
|
4131 static boolean_t |
|
4132 #ifdef CONFIG_E1000_NAPI |
|
4133 e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
4134 struct e1000_rx_ring *rx_ring, |
|
4135 int *work_done, int work_to_do) |
|
4136 #else |
|
4137 e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
4138 struct e1000_rx_ring *rx_ring) |
|
4139 #endif |
|
4140 { |
|
4141 struct net_device *netdev = adapter->netdev; |
|
4142 struct pci_dev *pdev = adapter->pdev; |
|
4143 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
4144 struct e1000_buffer *buffer_info, *next_buffer; |
|
4145 unsigned long flags; |
|
4146 uint32_t length; |
|
4147 uint8_t last_byte; |
|
4148 unsigned int i; |
|
4149 int cleaned_count = 0; |
|
4150 boolean_t cleaned = FALSE; |
|
4151 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
4152 |
|
4153 i = rx_ring->next_to_clean; |
|
4154 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4155 buffer_info = &rx_ring->buffer_info[i]; |
|
4156 |
|
4157 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
4158 struct sk_buff *skb; |
|
4159 u8 status; |
|
4160 |
|
4161 #ifdef CONFIG_E1000_NAPI |
|
4162 if (*work_done >= work_to_do) |
|
4163 break; |
|
4164 (*work_done)++; |
|
4165 #endif |
|
4166 status = rx_desc->status; |
|
4167 skb = buffer_info->skb; |
|
4168 buffer_info->skb = NULL; |
|
4169 |
|
4170 prefetch(skb->data - NET_IP_ALIGN); |
|
4171 |
|
4172 if (++i == rx_ring->count) i = 0; |
|
4173 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
4174 prefetch(next_rxd); |
|
4175 |
|
4176 next_buffer = &rx_ring->buffer_info[i]; |
|
4177 |
|
4178 cleaned = TRUE; |
|
4179 cleaned_count++; |
|
4180 pci_unmap_single(pdev, |
|
4181 buffer_info->dma, |
|
4182 buffer_info->length, |
|
4183 PCI_DMA_FROMDEVICE); |
|
4184 |
|
4185 length = le16_to_cpu(rx_desc->length); |
|
4186 |
|
4187 if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
|
4188 /* All receives must fit into a single buffer */ |
|
4189 E1000_DBG("%s: Receive packet consumed multiple" |
|
4190 " buffers\n", netdev->name); |
|
4191 /* recycle */ |
|
4192 buffer_info->skb = skb; |
|
4193 goto next_desc; |
|
4194 } |
|
4195 |
|
4196 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
4197 last_byte = *(skb->data + length - 1); |
|
4198 if (TBI_ACCEPT(&adapter->hw, status, |
|
4199 rx_desc->errors, length, last_byte)) { |
|
4200 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4201 e1000_tbi_adjust_stats(&adapter->hw, |
|
4202 &adapter->stats, |
|
4203 length, skb->data); |
|
4204 spin_unlock_irqrestore(&adapter->stats_lock, |
|
4205 flags); |
|
4206 length--; |
|
4207 } else { |
|
4208 /* recycle */ |
|
4209 buffer_info->skb = skb; |
|
4210 goto next_desc; |
|
4211 } |
|
4212 } |
|
4213 |
|
4214 /* adjust length to remove Ethernet CRC, this must be |
|
4215 * done after the TBI_ACCEPT workaround above */ |
|
4216 length -= 4; |
|
4217 |
|
4218 /* probably a little skewed due to removing CRC */ |
|
4219 total_rx_bytes += length; |
|
4220 total_rx_packets++; |
|
4221 |
|
4222 /* code added for copybreak, this should improve |
|
4223 * performance for small packets with large amounts |
|
4224 * of reassembly being done in the stack */ |
|
4225 if (length < copybreak) { |
|
4226 struct sk_buff *new_skb = |
|
4227 netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
|
4228 if (new_skb) { |
|
4229 skb_reserve(new_skb, NET_IP_ALIGN); |
|
4230 skb_copy_to_linear_data_offset(new_skb, |
|
4231 -NET_IP_ALIGN, |
|
4232 (skb->data - |
|
4233 NET_IP_ALIGN), |
|
4234 (length + |
|
4235 NET_IP_ALIGN)); |
|
4236 /* save the skb in buffer_info as good */ |
|
4237 buffer_info->skb = skb; |
|
4238 skb = new_skb; |
|
4239 } |
|
4240 /* else just continue with the old one */ |
|
4241 } |
|
4242 /* end copybreak code */ |
|
4243 skb_put(skb, length); |
|
4244 |
|
4245 /* Receive Checksum Offload */ |
|
4246 e1000_rx_checksum(adapter, |
|
4247 (uint32_t)(status) | |
|
4248 ((uint32_t)(rx_desc->errors) << 24), |
|
4249 le16_to_cpu(rx_desc->csum), skb); |
|
4250 |
|
4251 skb->protocol = eth_type_trans(skb, netdev); |
|
4252 #ifdef CONFIG_E1000_NAPI |
|
4253 if (unlikely(adapter->vlgrp && |
|
4254 (status & E1000_RXD_STAT_VP))) { |
|
4255 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
|
4256 le16_to_cpu(rx_desc->special) & |
|
4257 E1000_RXD_SPC_VLAN_MASK); |
|
4258 } else { |
|
4259 netif_receive_skb(skb); |
|
4260 } |
|
4261 #else /* CONFIG_E1000_NAPI */ |
|
4262 if (unlikely(adapter->vlgrp && |
|
4263 (status & E1000_RXD_STAT_VP))) { |
|
4264 vlan_hwaccel_rx(skb, adapter->vlgrp, |
|
4265 le16_to_cpu(rx_desc->special) & |
|
4266 E1000_RXD_SPC_VLAN_MASK); |
|
4267 } else { |
|
4268 netif_rx(skb); |
|
4269 } |
|
4270 #endif /* CONFIG_E1000_NAPI */ |
|
4271 netdev->last_rx = jiffies; |
|
4272 |
|
4273 next_desc: |
|
4274 rx_desc->status = 0; |
|
4275 |
|
4276 /* return some buffers to hardware, one at a time is too slow */ |
|
4277 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4278 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4279 cleaned_count = 0; |
|
4280 } |
|
4281 |
|
4282 /* use prefetched values */ |
|
4283 rx_desc = next_rxd; |
|
4284 buffer_info = next_buffer; |
|
4285 } |
|
4286 rx_ring->next_to_clean = i; |
|
4287 |
|
4288 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4289 if (cleaned_count) |
|
4290 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4291 |
|
4292 adapter->total_rx_packets += total_rx_packets; |
|
4293 adapter->total_rx_bytes += total_rx_bytes; |
|
4294 return cleaned; |
|
4295 } |
|
4296 |
|
4297 /** |
|
4298 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
4299 * @adapter: board private structure |
|
4300 **/ |
|
4301 |
|
4302 static boolean_t |
|
4303 #ifdef CONFIG_E1000_NAPI |
|
4304 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
|
4305 struct e1000_rx_ring *rx_ring, |
|
4306 int *work_done, int work_to_do) |
|
4307 #else |
|
4308 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
|
4309 struct e1000_rx_ring *rx_ring) |
|
4310 #endif |
|
4311 { |
|
4312 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
4313 struct net_device *netdev = adapter->netdev; |
|
4314 struct pci_dev *pdev = adapter->pdev; |
|
4315 struct e1000_buffer *buffer_info, *next_buffer; |
|
4316 struct e1000_ps_page *ps_page; |
|
4317 struct e1000_ps_page_dma *ps_page_dma; |
|
4318 struct sk_buff *skb; |
|
4319 unsigned int i, j; |
|
4320 uint32_t length, staterr; |
|
4321 int cleaned_count = 0; |
|
4322 boolean_t cleaned = FALSE; |
|
4323 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
4324 |
|
4325 i = rx_ring->next_to_clean; |
|
4326 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
4327 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
4328 buffer_info = &rx_ring->buffer_info[i]; |
|
4329 |
|
4330 while (staterr & E1000_RXD_STAT_DD) { |
|
4331 ps_page = &rx_ring->ps_page[i]; |
|
4332 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
4333 #ifdef CONFIG_E1000_NAPI |
|
4334 if (unlikely(*work_done >= work_to_do)) |
|
4335 break; |
|
4336 (*work_done)++; |
|
4337 #endif |
|
4338 skb = buffer_info->skb; |
|
4339 |
|
4340 /* in the packet split case this is header only */ |
|
4341 prefetch(skb->data - NET_IP_ALIGN); |
|
4342 |
|
4343 if (++i == rx_ring->count) i = 0; |
|
4344 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
4345 prefetch(next_rxd); |
|
4346 |
|
4347 next_buffer = &rx_ring->buffer_info[i]; |
|
4348 |
|
4349 cleaned = TRUE; |
|
4350 cleaned_count++; |
|
4351 pci_unmap_single(pdev, buffer_info->dma, |
|
4352 buffer_info->length, |
|
4353 PCI_DMA_FROMDEVICE); |
|
4354 |
|
4355 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
|
4356 E1000_DBG("%s: Packet Split buffers didn't pick up" |
|
4357 " the full packet\n", netdev->name); |
|
4358 dev_kfree_skb_irq(skb); |
|
4359 goto next_desc; |
|
4360 } |
|
4361 |
|
4362 if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
|
4363 dev_kfree_skb_irq(skb); |
|
4364 goto next_desc; |
|
4365 } |
|
4366 |
|
4367 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
4368 |
|
4369 if (unlikely(!length)) { |
|
4370 E1000_DBG("%s: Last part of the packet spanning" |
|
4371 " multiple descriptors\n", netdev->name); |
|
4372 dev_kfree_skb_irq(skb); |
|
4373 goto next_desc; |
|
4374 } |
|
4375 |
|
4376 /* Good Receive */ |
|
4377 skb_put(skb, length); |
|
4378 |
|
4379 { |
|
4380 /* this looks ugly, but it seems compiler issues make it |
|
4381 more efficient than reusing j */ |
|
4382 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
4383 |
|
4384 /* page alloc/put takes too long and effects small packet |
|
4385 * throughput, so unsplit small packets and save the alloc/put*/ |
|
4386 if (l1 && (l1 <= copybreak) && ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
4387 u8 *vaddr; |
|
4388 /* there is no documentation about how to call |
|
4389 * kmap_atomic, so we can't hold the mapping |
|
4390 * very long */ |
|
4391 pci_dma_sync_single_for_cpu(pdev, |
|
4392 ps_page_dma->ps_page_dma[0], |
|
4393 PAGE_SIZE, |
|
4394 PCI_DMA_FROMDEVICE); |
|
4395 vaddr = kmap_atomic(ps_page->ps_page[0], |
|
4396 KM_SKB_DATA_SOFTIRQ); |
|
4397 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
4398 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); |
|
4399 pci_dma_sync_single_for_device(pdev, |
|
4400 ps_page_dma->ps_page_dma[0], |
|
4401 PAGE_SIZE, PCI_DMA_FROMDEVICE); |
|
4402 /* remove the CRC */ |
|
4403 l1 -= 4; |
|
4404 skb_put(skb, l1); |
|
4405 goto copydone; |
|
4406 } /* if */ |
|
4407 } |
|
4408 |
|
4409 for (j = 0; j < adapter->rx_ps_pages; j++) { |
|
4410 if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
|
4411 break; |
|
4412 pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
|
4413 PAGE_SIZE, PCI_DMA_FROMDEVICE); |
|
4414 ps_page_dma->ps_page_dma[j] = 0; |
|
4415 skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
|
4416 length); |
|
4417 ps_page->ps_page[j] = NULL; |
|
4418 skb->len += length; |
|
4419 skb->data_len += length; |
|
4420 skb->truesize += length; |
|
4421 } |
|
4422 |
|
4423 /* strip the ethernet crc, problem is we're using pages now so |
|
4424 * this whole operation can get a little cpu intensive */ |
|
4425 pskb_trim(skb, skb->len - 4); |
|
4426 |
|
4427 copydone: |
|
4428 total_rx_bytes += skb->len; |
|
4429 total_rx_packets++; |
|
4430 |
|
4431 e1000_rx_checksum(adapter, staterr, |
|
4432 le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
|
4433 skb->protocol = eth_type_trans(skb, netdev); |
|
4434 |
|
4435 if (likely(rx_desc->wb.upper.header_status & |
|
4436 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))) |
|
4437 adapter->rx_hdr_split++; |
|
4438 #ifdef CONFIG_E1000_NAPI |
|
4439 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
|
4440 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
|
4441 le16_to_cpu(rx_desc->wb.middle.vlan) & |
|
4442 E1000_RXD_SPC_VLAN_MASK); |
|
4443 } else { |
|
4444 netif_receive_skb(skb); |
|
4445 } |
|
4446 #else /* CONFIG_E1000_NAPI */ |
|
4447 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
|
4448 vlan_hwaccel_rx(skb, adapter->vlgrp, |
|
4449 le16_to_cpu(rx_desc->wb.middle.vlan) & |
|
4450 E1000_RXD_SPC_VLAN_MASK); |
|
4451 } else { |
|
4452 netif_rx(skb); |
|
4453 } |
|
4454 #endif /* CONFIG_E1000_NAPI */ |
|
4455 netdev->last_rx = jiffies; |
|
4456 |
|
4457 next_desc: |
|
4458 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
4459 buffer_info->skb = NULL; |
|
4460 |
|
4461 /* return some buffers to hardware, one at a time is too slow */ |
|
4462 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4463 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4464 cleaned_count = 0; |
|
4465 } |
|
4466 |
|
4467 /* use prefetched values */ |
|
4468 rx_desc = next_rxd; |
|
4469 buffer_info = next_buffer; |
|
4470 |
|
4471 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
4472 } |
|
4473 rx_ring->next_to_clean = i; |
|
4474 |
|
4475 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4476 if (cleaned_count) |
|
4477 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4478 |
|
4479 adapter->total_rx_packets += total_rx_packets; |
|
4480 adapter->total_rx_bytes += total_rx_bytes; |
|
4481 return cleaned; |
|
4482 } |
|
4483 |
|
4484 /** |
|
4485 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4486 * @adapter: address of board private structure |
|
4487 **/ |
|
4488 |
|
4489 static void |
|
4490 e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4491 struct e1000_rx_ring *rx_ring, |
|
4492 int cleaned_count) |
|
4493 { |
|
4494 struct net_device *netdev = adapter->netdev; |
|
4495 struct pci_dev *pdev = adapter->pdev; |
|
4496 struct e1000_rx_desc *rx_desc; |
|
4497 struct e1000_buffer *buffer_info; |
|
4498 struct sk_buff *skb; |
|
4499 unsigned int i; |
|
4500 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; |
|
4501 |
|
4502 i = rx_ring->next_to_use; |
|
4503 buffer_info = &rx_ring->buffer_info[i]; |
|
4504 |
|
4505 while (cleaned_count--) { |
|
4506 skb = buffer_info->skb; |
|
4507 if (skb) { |
|
4508 skb_trim(skb, 0); |
|
4509 goto map_skb; |
|
4510 } |
|
4511 |
|
4512 skb = netdev_alloc_skb(netdev, bufsz); |
|
4513 if (unlikely(!skb)) { |
|
4514 /* Better luck next round */ |
|
4515 adapter->alloc_rx_buff_failed++; |
|
4516 break; |
|
4517 } |
|
4518 |
|
4519 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4520 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4521 struct sk_buff *oldskb = skb; |
|
4522 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
|
4523 "at %p\n", bufsz, skb->data); |
|
4524 /* Try again, without freeing the previous */ |
|
4525 skb = netdev_alloc_skb(netdev, bufsz); |
|
4526 /* Failed allocation, critical failure */ |
|
4527 if (!skb) { |
|
4528 dev_kfree_skb(oldskb); |
|
4529 break; |
|
4530 } |
|
4531 |
|
4532 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4533 /* give up */ |
|
4534 dev_kfree_skb(skb); |
|
4535 dev_kfree_skb(oldskb); |
|
4536 break; /* while !buffer_info->skb */ |
|
4537 } |
|
4538 |
|
4539 /* Use new allocation */ |
|
4540 dev_kfree_skb(oldskb); |
|
4541 } |
|
4542 /* Make buffer alignment 2 beyond a 16 byte boundary |
|
4543 * this will result in a 16 byte aligned IP header after |
|
4544 * the 14 byte MAC header is removed |
|
4545 */ |
|
4546 skb_reserve(skb, NET_IP_ALIGN); |
|
4547 |
|
4548 buffer_info->skb = skb; |
|
4549 buffer_info->length = adapter->rx_buffer_len; |
|
4550 map_skb: |
|
4551 buffer_info->dma = pci_map_single(pdev, |
|
4552 skb->data, |
|
4553 adapter->rx_buffer_len, |
|
4554 PCI_DMA_FROMDEVICE); |
|
4555 |
|
4556 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4557 if (!e1000_check_64k_bound(adapter, |
|
4558 (void *)(unsigned long)buffer_info->dma, |
|
4559 adapter->rx_buffer_len)) { |
|
4560 DPRINTK(RX_ERR, ERR, |
|
4561 "dma align check failed: %u bytes at %p\n", |
|
4562 adapter->rx_buffer_len, |
|
4563 (void *)(unsigned long)buffer_info->dma); |
|
4564 dev_kfree_skb(skb); |
|
4565 buffer_info->skb = NULL; |
|
4566 |
|
4567 pci_unmap_single(pdev, buffer_info->dma, |
|
4568 adapter->rx_buffer_len, |
|
4569 PCI_DMA_FROMDEVICE); |
|
4570 |
|
4571 break; /* while !buffer_info->skb */ |
|
4572 } |
|
4573 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4574 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4575 |
|
4576 if (unlikely(++i == rx_ring->count)) |
|
4577 i = 0; |
|
4578 buffer_info = &rx_ring->buffer_info[i]; |
|
4579 } |
|
4580 |
|
4581 if (likely(rx_ring->next_to_use != i)) { |
|
4582 rx_ring->next_to_use = i; |
|
4583 if (unlikely(i-- == 0)) |
|
4584 i = (rx_ring->count - 1); |
|
4585 |
|
4586 /* Force memory writes to complete before letting h/w |
|
4587 * know there are new descriptors to fetch. (Only |
|
4588 * applicable for weak-ordered memory model archs, |
|
4589 * such as IA-64). */ |
|
4590 wmb(); |
|
4591 writel(i, adapter->hw.hw_addr + rx_ring->rdt); |
|
4592 } |
|
4593 } |
|
4594 |
|
4595 /** |
|
4596 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
4597 * @adapter: address of board private structure |
|
4598 **/ |
|
4599 |
|
4600 static void |
|
4601 e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
|
4602 struct e1000_rx_ring *rx_ring, |
|
4603 int cleaned_count) |
|
4604 { |
|
4605 struct net_device *netdev = adapter->netdev; |
|
4606 struct pci_dev *pdev = adapter->pdev; |
|
4607 union e1000_rx_desc_packet_split *rx_desc; |
|
4608 struct e1000_buffer *buffer_info; |
|
4609 struct e1000_ps_page *ps_page; |
|
4610 struct e1000_ps_page_dma *ps_page_dma; |
|
4611 struct sk_buff *skb; |
|
4612 unsigned int i, j; |
|
4613 |
|
4614 i = rx_ring->next_to_use; |
|
4615 buffer_info = &rx_ring->buffer_info[i]; |
|
4616 ps_page = &rx_ring->ps_page[i]; |
|
4617 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
4618 |
|
4619 while (cleaned_count--) { |
|
4620 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
4621 |
|
4622 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
4623 if (j < adapter->rx_ps_pages) { |
|
4624 if (likely(!ps_page->ps_page[j])) { |
|
4625 ps_page->ps_page[j] = |
|
4626 alloc_page(GFP_ATOMIC); |
|
4627 if (unlikely(!ps_page->ps_page[j])) { |
|
4628 adapter->alloc_rx_buff_failed++; |
|
4629 goto no_buffers; |
|
4630 } |
|
4631 ps_page_dma->ps_page_dma[j] = |
|
4632 pci_map_page(pdev, |
|
4633 ps_page->ps_page[j], |
|
4634 0, PAGE_SIZE, |
|
4635 PCI_DMA_FROMDEVICE); |
|
4636 } |
|
4637 /* Refresh the desc even if buffer_addrs didn't |
|
4638 * change because each write-back erases |
|
4639 * this info. |
|
4640 */ |
|
4641 rx_desc->read.buffer_addr[j+1] = |
|
4642 cpu_to_le64(ps_page_dma->ps_page_dma[j]); |
|
4643 } else |
|
4644 rx_desc->read.buffer_addr[j+1] = ~0; |
|
4645 } |
|
4646 |
|
4647 skb = netdev_alloc_skb(netdev, |
|
4648 adapter->rx_ps_bsize0 + NET_IP_ALIGN); |
|
4649 |
|
4650 if (unlikely(!skb)) { |
|
4651 adapter->alloc_rx_buff_failed++; |
|
4652 break; |
|
4653 } |
|
4654 |
|
4655 /* Make buffer alignment 2 beyond a 16 byte boundary |
|
4656 * this will result in a 16 byte aligned IP header after |
|
4657 * the 14 byte MAC header is removed |
|
4658 */ |
|
4659 skb_reserve(skb, NET_IP_ALIGN); |
|
4660 |
|
4661 buffer_info->skb = skb; |
|
4662 buffer_info->length = adapter->rx_ps_bsize0; |
|
4663 buffer_info->dma = pci_map_single(pdev, skb->data, |
|
4664 adapter->rx_ps_bsize0, |
|
4665 PCI_DMA_FROMDEVICE); |
|
4666 |
|
4667 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
4668 |
|
4669 if (unlikely(++i == rx_ring->count)) i = 0; |
|
4670 buffer_info = &rx_ring->buffer_info[i]; |
|
4671 ps_page = &rx_ring->ps_page[i]; |
|
4672 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
4673 } |
|
4674 |
|
4675 no_buffers: |
|
4676 if (likely(rx_ring->next_to_use != i)) { |
|
4677 rx_ring->next_to_use = i; |
|
4678 if (unlikely(i-- == 0)) i = (rx_ring->count - 1); |
|
4679 |
|
4680 /* Force memory writes to complete before letting h/w |
|
4681 * know there are new descriptors to fetch. (Only |
|
4682 * applicable for weak-ordered memory model archs, |
|
4683 * such as IA-64). */ |
|
4684 wmb(); |
|
4685 /* Hardware increments by 16 bytes, but packet split |
|
4686 * descriptors are 32 bytes...so we increment tail |
|
4687 * twice as much. |
|
4688 */ |
|
4689 writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); |
|
4690 } |
|
4691 } |
|
4692 |
|
4693 /** |
|
4694 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4695 * @adapter: |
|
4696 **/ |
|
4697 |
|
4698 static void |
|
4699 e1000_smartspeed(struct e1000_adapter *adapter) |
|
4700 { |
|
4701 uint16_t phy_status; |
|
4702 uint16_t phy_ctrl; |
|
4703 |
|
4704 if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
|
4705 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4706 return; |
|
4707 |
|
4708 if (adapter->smartspeed == 0) { |
|
4709 /* If Master/Slave config fault is asserted twice, |
|
4710 * we assume back-to-back */ |
|
4711 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
|
4712 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4713 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
|
4714 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4715 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4716 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4717 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4718 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, |
|
4719 phy_ctrl); |
|
4720 adapter->smartspeed++; |
|
4721 if (!e1000_phy_setup_autoneg(&adapter->hw) && |
|
4722 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
|
4723 &phy_ctrl)) { |
|
4724 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4725 MII_CR_RESTART_AUTO_NEG); |
|
4726 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, |
|
4727 phy_ctrl); |
|
4728 } |
|
4729 } |
|
4730 return; |
|
4731 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4732 /* If still no link, perhaps using 2/3 pair cable */ |
|
4733 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4734 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4735 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); |
|
4736 if (!e1000_phy_setup_autoneg(&adapter->hw) && |
|
4737 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
|
4738 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4739 MII_CR_RESTART_AUTO_NEG); |
|
4740 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); |
|
4741 } |
|
4742 } |
|
4743 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4744 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4745 adapter->smartspeed = 0; |
|
4746 } |
|
4747 |
|
4748 /** |
|
4749 * e1000_ioctl - |
|
4750 * @netdev: |
|
4751 * @ifreq: |
|
4752 * @cmd: |
|
4753 **/ |
|
4754 |
|
4755 static int |
|
4756 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4757 { |
|
4758 switch (cmd) { |
|
4759 case SIOCGMIIPHY: |
|
4760 case SIOCGMIIREG: |
|
4761 case SIOCSMIIREG: |
|
4762 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4763 default: |
|
4764 return -EOPNOTSUPP; |
|
4765 } |
|
4766 } |
|
4767 |
|
4768 /** |
|
4769 * e1000_mii_ioctl - |
|
4770 * @netdev: |
|
4771 * @ifreq: |
|
4772 * @cmd: |
|
4773 **/ |
|
4774 |
|
4775 static int |
|
4776 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4777 { |
|
4778 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4779 struct mii_ioctl_data *data = if_mii(ifr); |
|
4780 int retval; |
|
4781 uint16_t mii_reg; |
|
4782 uint16_t spddplx; |
|
4783 unsigned long flags; |
|
4784 |
|
4785 if (adapter->hw.media_type != e1000_media_type_copper) |
|
4786 return -EOPNOTSUPP; |
|
4787 |
|
4788 switch (cmd) { |
|
4789 case SIOCGMIIPHY: |
|
4790 data->phy_id = adapter->hw.phy_addr; |
|
4791 break; |
|
4792 case SIOCGMIIREG: |
|
4793 if (!capable(CAP_NET_ADMIN)) |
|
4794 return -EPERM; |
|
4795 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4796 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
|
4797 &data->val_out)) { |
|
4798 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4799 return -EIO; |
|
4800 } |
|
4801 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4802 break; |
|
4803 case SIOCSMIIREG: |
|
4804 if (!capable(CAP_NET_ADMIN)) |
|
4805 return -EPERM; |
|
4806 if (data->reg_num & ~(0x1F)) |
|
4807 return -EFAULT; |
|
4808 mii_reg = data->val_in; |
|
4809 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4810 if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
|
4811 mii_reg)) { |
|
4812 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4813 return -EIO; |
|
4814 } |
|
4815 if (adapter->hw.media_type == e1000_media_type_copper) { |
|
4816 switch (data->reg_num) { |
|
4817 case PHY_CTRL: |
|
4818 if (mii_reg & MII_CR_POWER_DOWN) |
|
4819 break; |
|
4820 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4821 adapter->hw.autoneg = 1; |
|
4822 adapter->hw.autoneg_advertised = 0x2F; |
|
4823 } else { |
|
4824 if (mii_reg & 0x40) |
|
4825 spddplx = SPEED_1000; |
|
4826 else if (mii_reg & 0x2000) |
|
4827 spddplx = SPEED_100; |
|
4828 else |
|
4829 spddplx = SPEED_10; |
|
4830 spddplx += (mii_reg & 0x100) |
|
4831 ? DUPLEX_FULL : |
|
4832 DUPLEX_HALF; |
|
4833 retval = e1000_set_spd_dplx(adapter, |
|
4834 spddplx); |
|
4835 if (retval) { |
|
4836 spin_unlock_irqrestore( |
|
4837 &adapter->stats_lock, |
|
4838 flags); |
|
4839 return retval; |
|
4840 } |
|
4841 } |
|
4842 if (netif_running(adapter->netdev)) |
|
4843 e1000_reinit_locked(adapter); |
|
4844 else |
|
4845 e1000_reset(adapter); |
|
4846 break; |
|
4847 case M88E1000_PHY_SPEC_CTRL: |
|
4848 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4849 if (e1000_phy_reset(&adapter->hw)) { |
|
4850 spin_unlock_irqrestore( |
|
4851 &adapter->stats_lock, flags); |
|
4852 return -EIO; |
|
4853 } |
|
4854 break; |
|
4855 } |
|
4856 } else { |
|
4857 switch (data->reg_num) { |
|
4858 case PHY_CTRL: |
|
4859 if (mii_reg & MII_CR_POWER_DOWN) |
|
4860 break; |
|
4861 if (netif_running(adapter->netdev)) |
|
4862 e1000_reinit_locked(adapter); |
|
4863 else |
|
4864 e1000_reset(adapter); |
|
4865 break; |
|
4866 } |
|
4867 } |
|
4868 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4869 break; |
|
4870 default: |
|
4871 return -EOPNOTSUPP; |
|
4872 } |
|
4873 return E1000_SUCCESS; |
|
4874 } |
|
4875 |
|
4876 void |
|
4877 e1000_pci_set_mwi(struct e1000_hw *hw) |
|
4878 { |
|
4879 struct e1000_adapter *adapter = hw->back; |
|
4880 int ret_val = pci_set_mwi(adapter->pdev); |
|
4881 |
|
4882 if (ret_val) |
|
4883 DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
|
4884 } |
|
4885 |
|
4886 void |
|
4887 e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
4888 { |
|
4889 struct e1000_adapter *adapter = hw->back; |
|
4890 |
|
4891 pci_clear_mwi(adapter->pdev); |
|
4892 } |
|
4893 |
|
4894 void |
|
4895 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) |
|
4896 { |
|
4897 struct e1000_adapter *adapter = hw->back; |
|
4898 |
|
4899 pci_read_config_word(adapter->pdev, reg, value); |
|
4900 } |
|
4901 |
|
4902 void |
|
4903 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) |
|
4904 { |
|
4905 struct e1000_adapter *adapter = hw->back; |
|
4906 |
|
4907 pci_write_config_word(adapter->pdev, reg, *value); |
|
4908 } |
|
4909 |
|
4910 int32_t |
|
4911 e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) |
|
4912 { |
|
4913 struct e1000_adapter *adapter = hw->back; |
|
4914 uint16_t cap_offset; |
|
4915 |
|
4916 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); |
|
4917 if (!cap_offset) |
|
4918 return -E1000_ERR_CONFIG; |
|
4919 |
|
4920 pci_read_config_word(adapter->pdev, cap_offset + reg, value); |
|
4921 |
|
4922 return E1000_SUCCESS; |
|
4923 } |
|
4924 |
|
4925 void |
|
4926 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) |
|
4927 { |
|
4928 outl(value, port); |
|
4929 } |
|
4930 |
|
4931 static void |
|
4932 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) |
|
4933 { |
|
4934 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4935 uint32_t ctrl, rctl; |
|
4936 |
|
4937 e1000_irq_disable(adapter); |
|
4938 adapter->vlgrp = grp; |
|
4939 |
|
4940 if (grp) { |
|
4941 /* enable VLAN tag insert/strip */ |
|
4942 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
4943 ctrl |= E1000_CTRL_VME; |
|
4944 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
4945 |
|
4946 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
4947 /* enable VLAN receive filtering */ |
|
4948 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
4949 rctl |= E1000_RCTL_VFE; |
|
4950 rctl &= ~E1000_RCTL_CFIEN; |
|
4951 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
4952 e1000_update_mng_vlan(adapter); |
|
4953 } |
|
4954 } else { |
|
4955 /* disable VLAN tag insert/strip */ |
|
4956 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
4957 ctrl &= ~E1000_CTRL_VME; |
|
4958 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
4959 |
|
4960 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
4961 /* disable VLAN filtering */ |
|
4962 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
4963 rctl &= ~E1000_RCTL_VFE; |
|
4964 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
4965 if (adapter->mng_vlan_id != |
|
4966 (uint16_t)E1000_MNG_VLAN_NONE) { |
|
4967 e1000_vlan_rx_kill_vid(netdev, |
|
4968 adapter->mng_vlan_id); |
|
4969 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4970 } |
|
4971 } |
|
4972 } |
|
4973 |
|
4974 e1000_irq_enable(adapter); |
|
4975 } |
|
4976 |
|
4977 static void |
|
4978 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) |
|
4979 { |
|
4980 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4981 uint32_t vfta, index; |
|
4982 |
|
4983 if ((adapter->hw.mng_cookie.status & |
|
4984 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4985 (vid == adapter->mng_vlan_id)) |
|
4986 return; |
|
4987 /* add VID to filter table */ |
|
4988 index = (vid >> 5) & 0x7F; |
|
4989 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); |
|
4990 vfta |= (1 << (vid & 0x1F)); |
|
4991 e1000_write_vfta(&adapter->hw, index, vfta); |
|
4992 } |
|
4993 |
|
4994 static void |
|
4995 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) |
|
4996 { |
|
4997 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4998 uint32_t vfta, index; |
|
4999 |
|
5000 e1000_irq_disable(adapter); |
|
5001 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
5002 e1000_irq_enable(adapter); |
|
5003 |
|
5004 if ((adapter->hw.mng_cookie.status & |
|
5005 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
5006 (vid == adapter->mng_vlan_id)) { |
|
5007 /* release control to f/w */ |
|
5008 e1000_release_hw_control(adapter); |
|
5009 return; |
|
5010 } |
|
5011 |
|
5012 /* remove VID from filter table */ |
|
5013 index = (vid >> 5) & 0x7F; |
|
5014 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); |
|
5015 vfta &= ~(1 << (vid & 0x1F)); |
|
5016 e1000_write_vfta(&adapter->hw, index, vfta); |
|
5017 } |
|
5018 |
|
5019 static void |
|
5020 e1000_restore_vlan(struct e1000_adapter *adapter) |
|
5021 { |
|
5022 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
5023 |
|
5024 if (adapter->vlgrp) { |
|
5025 uint16_t vid; |
|
5026 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
|
5027 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
5028 continue; |
|
5029 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
5030 } |
|
5031 } |
|
5032 } |
|
5033 |
|
5034 int |
|
5035 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) |
|
5036 { |
|
5037 adapter->hw.autoneg = 0; |
|
5038 |
|
5039 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
5040 if ((adapter->hw.media_type == e1000_media_type_fiber) && |
|
5041 spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
|
5042 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
5043 return -EINVAL; |
|
5044 } |
|
5045 |
|
5046 switch (spddplx) { |
|
5047 case SPEED_10 + DUPLEX_HALF: |
|
5048 adapter->hw.forced_speed_duplex = e1000_10_half; |
|
5049 break; |
|
5050 case SPEED_10 + DUPLEX_FULL: |
|
5051 adapter->hw.forced_speed_duplex = e1000_10_full; |
|
5052 break; |
|
5053 case SPEED_100 + DUPLEX_HALF: |
|
5054 adapter->hw.forced_speed_duplex = e1000_100_half; |
|
5055 break; |
|
5056 case SPEED_100 + DUPLEX_FULL: |
|
5057 adapter->hw.forced_speed_duplex = e1000_100_full; |
|
5058 break; |
|
5059 case SPEED_1000 + DUPLEX_FULL: |
|
5060 adapter->hw.autoneg = 1; |
|
5061 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; |
|
5062 break; |
|
5063 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
5064 default: |
|
5065 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
5066 return -EINVAL; |
|
5067 } |
|
5068 return 0; |
|
5069 } |
|
5070 |
|
5071 static int |
|
5072 e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
5073 { |
|
5074 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5075 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5076 uint32_t ctrl, ctrl_ext, rctl, status; |
|
5077 uint32_t wufc = adapter->wol; |
|
5078 #ifdef CONFIG_PM |
|
5079 int retval = 0; |
|
5080 #endif |
|
5081 |
|
5082 netif_device_detach(netdev); |
|
5083 |
|
5084 if (netif_running(netdev)) { |
|
5085 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
5086 e1000_down(adapter); |
|
5087 } |
|
5088 |
|
5089 #ifdef CONFIG_PM |
|
5090 retval = pci_save_state(pdev); |
|
5091 if (retval) |
|
5092 return retval; |
|
5093 #endif |
|
5094 |
|
5095 status = E1000_READ_REG(&adapter->hw, STATUS); |
|
5096 if (status & E1000_STATUS_LU) |
|
5097 wufc &= ~E1000_WUFC_LNKC; |
|
5098 |
|
5099 if (wufc) { |
|
5100 e1000_setup_rctl(adapter); |
|
5101 e1000_set_multi(netdev); |
|
5102 |
|
5103 /* turn on all-multi mode if wake on multicast is enabled */ |
|
5104 if (wufc & E1000_WUFC_MC) { |
|
5105 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
5106 rctl |= E1000_RCTL_MPE; |
|
5107 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
5108 } |
|
5109 |
|
5110 if (adapter->hw.mac_type >= e1000_82540) { |
|
5111 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
5112 /* advertise wake from D3Cold */ |
|
5113 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
5114 /* phy power management enable */ |
|
5115 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
5116 ctrl |= E1000_CTRL_ADVD3WUC | |
|
5117 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
5118 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
5119 } |
|
5120 |
|
5121 if (adapter->hw.media_type == e1000_media_type_fiber || |
|
5122 adapter->hw.media_type == e1000_media_type_internal_serdes) { |
|
5123 /* keep the laser running in D3 */ |
|
5124 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
|
5125 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
5126 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); |
|
5127 } |
|
5128 |
|
5129 /* Allow time for pending master requests to run */ |
|
5130 e1000_disable_pciex_master(&adapter->hw); |
|
5131 |
|
5132 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
|
5133 E1000_WRITE_REG(&adapter->hw, WUFC, wufc); |
|
5134 pci_enable_wake(pdev, PCI_D3hot, 1); |
|
5135 pci_enable_wake(pdev, PCI_D3cold, 1); |
|
5136 } else { |
|
5137 E1000_WRITE_REG(&adapter->hw, WUC, 0); |
|
5138 E1000_WRITE_REG(&adapter->hw, WUFC, 0); |
|
5139 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5140 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5141 } |
|
5142 |
|
5143 e1000_release_manageability(adapter); |
|
5144 |
|
5145 /* make sure adapter isn't asleep if manageability is enabled */ |
|
5146 if (adapter->en_mng_pt) { |
|
5147 pci_enable_wake(pdev, PCI_D3hot, 1); |
|
5148 pci_enable_wake(pdev, PCI_D3cold, 1); |
|
5149 } |
|
5150 |
|
5151 if (adapter->hw.phy_type == e1000_phy_igp_3) |
|
5152 e1000_phy_powerdown_workaround(&adapter->hw); |
|
5153 |
|
5154 if (netif_running(netdev)) |
|
5155 e1000_free_irq(adapter); |
|
5156 |
|
5157 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
5158 * would have already happened in close and is redundant. */ |
|
5159 e1000_release_hw_control(adapter); |
|
5160 |
|
5161 pci_disable_device(pdev); |
|
5162 |
|
5163 pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
|
5164 |
|
5165 return 0; |
|
5166 } |
|
5167 |
|
5168 #ifdef CONFIG_PM |
|
5169 static int |
|
5170 e1000_resume(struct pci_dev *pdev) |
|
5171 { |
|
5172 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5173 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5174 uint32_t err; |
|
5175 |
|
5176 pci_set_power_state(pdev, PCI_D0); |
|
5177 pci_restore_state(pdev); |
|
5178 if ((err = pci_enable_device(pdev))) { |
|
5179 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); |
|
5180 return err; |
|
5181 } |
|
5182 pci_set_master(pdev); |
|
5183 |
|
5184 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5185 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5186 |
|
5187 if (netif_running(netdev) && (err = e1000_request_irq(adapter))) |
|
5188 return err; |
|
5189 |
|
5190 e1000_power_up_phy(adapter); |
|
5191 e1000_reset(adapter); |
|
5192 E1000_WRITE_REG(&adapter->hw, WUS, ~0); |
|
5193 |
|
5194 e1000_init_manageability(adapter); |
|
5195 |
|
5196 if (netif_running(netdev)) |
|
5197 e1000_up(adapter); |
|
5198 |
|
5199 netif_device_attach(netdev); |
|
5200 |
|
5201 /* If the controller is 82573 and f/w is AMT, do not set |
|
5202 * DRV_LOAD until the interface is up. For all other cases, |
|
5203 * let the f/w know that the h/w is now under the control |
|
5204 * of the driver. */ |
|
5205 if (adapter->hw.mac_type != e1000_82573 || |
|
5206 !e1000_check_mng_mode(&adapter->hw)) |
|
5207 e1000_get_hw_control(adapter); |
|
5208 |
|
5209 return 0; |
|
5210 } |
|
5211 #endif |
|
5212 |
|
5213 static void e1000_shutdown(struct pci_dev *pdev) |
|
5214 { |
|
5215 e1000_suspend(pdev, PMSG_SUSPEND); |
|
5216 } |
|
5217 |
|
5218 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5219 /* |
|
5220 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
5221 * without having to re-enable interrupts. It's not called while |
|
5222 * the interrupt routine is executing. |
|
5223 */ |
|
5224 static void |
|
5225 e1000_netpoll(struct net_device *netdev) |
|
5226 { |
|
5227 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5228 |
|
5229 disable_irq(adapter->pdev->irq); |
|
5230 e1000_intr(adapter->pdev->irq, netdev); |
|
5231 e1000_clean_tx_irq(adapter, adapter->tx_ring); |
|
5232 #ifndef CONFIG_E1000_NAPI |
|
5233 adapter->clean_rx(adapter, adapter->rx_ring); |
|
5234 #endif |
|
5235 enable_irq(adapter->pdev->irq); |
|
5236 } |
|
5237 #endif |
|
5238 |
|
5239 /** |
|
5240 * e1000_io_error_detected - called when PCI error is detected |
|
5241 * @pdev: Pointer to PCI device |
|
5242 * @state: The current pci conneection state |
|
5243 * |
|
5244 * This function is called after a PCI bus error affecting |
|
5245 * this device has been detected. |
|
5246 */ |
|
5247 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) |
|
5248 { |
|
5249 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5250 struct e1000_adapter *adapter = netdev->priv; |
|
5251 |
|
5252 netif_device_detach(netdev); |
|
5253 |
|
5254 if (netif_running(netdev)) |
|
5255 e1000_down(adapter); |
|
5256 pci_disable_device(pdev); |
|
5257 |
|
5258 /* Request a slot slot reset. */ |
|
5259 return PCI_ERS_RESULT_NEED_RESET; |
|
5260 } |
|
5261 |
|
5262 /** |
|
5263 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
5264 * @pdev: Pointer to PCI device |
|
5265 * |
|
5266 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
5267 * resembles the first-half of the e1000_resume routine. |
|
5268 */ |
|
5269 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
5270 { |
|
5271 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5272 struct e1000_adapter *adapter = netdev->priv; |
|
5273 |
|
5274 if (pci_enable_device(pdev)) { |
|
5275 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); |
|
5276 return PCI_ERS_RESULT_DISCONNECT; |
|
5277 } |
|
5278 pci_set_master(pdev); |
|
5279 |
|
5280 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5281 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5282 |
|
5283 e1000_reset(adapter); |
|
5284 E1000_WRITE_REG(&adapter->hw, WUS, ~0); |
|
5285 |
|
5286 return PCI_ERS_RESULT_RECOVERED; |
|
5287 } |
|
5288 |
|
5289 /** |
|
5290 * e1000_io_resume - called when traffic can start flowing again. |
|
5291 * @pdev: Pointer to PCI device |
|
5292 * |
|
5293 * This callback is called when the error recovery driver tells us that |
|
5294 * its OK to resume normal operation. Implementation resembles the |
|
5295 * second-half of the e1000_resume routine. |
|
5296 */ |
|
5297 static void e1000_io_resume(struct pci_dev *pdev) |
|
5298 { |
|
5299 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5300 struct e1000_adapter *adapter = netdev->priv; |
|
5301 |
|
5302 e1000_init_manageability(adapter); |
|
5303 |
|
5304 if (netif_running(netdev)) { |
|
5305 if (e1000_up(adapter)) { |
|
5306 printk("e1000: can't bring device back up after reset\n"); |
|
5307 return; |
|
5308 } |
|
5309 } |
|
5310 |
|
5311 netif_device_attach(netdev); |
|
5312 |
|
5313 /* If the controller is 82573 and f/w is AMT, do not set |
|
5314 * DRV_LOAD until the interface is up. For all other cases, |
|
5315 * let the f/w know that the h/w is now under the control |
|
5316 * of the driver. */ |
|
5317 if (adapter->hw.mac_type != e1000_82573 || |
|
5318 !e1000_check_mng_mode(&adapter->hw)) |
|
5319 e1000_get_hw_control(adapter); |
|
5320 |
|
5321 } |
|
5322 |
|
5323 /* e1000_main.c */ |