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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 "e1000-2.6.22-ethercat.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[] = "ec_e1000"; |
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33 static char e1000_driver_string[] = "EtherCAT 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 // do not auto-load driver |
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115 // MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
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116 |
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117 int e1000_up(struct e1000_adapter *adapter); |
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118 void e1000_down(struct e1000_adapter *adapter); |
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119 void e1000_reinit_locked(struct e1000_adapter *adapter); |
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120 void e1000_reset(struct e1000_adapter *adapter); |
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121 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); |
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122 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
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123 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); |
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124 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); |
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125 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); |
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126 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
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127 struct e1000_tx_ring *txdr); |
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128 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
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129 struct e1000_rx_ring *rxdr); |
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130 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
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131 struct e1000_tx_ring *tx_ring); |
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132 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
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133 struct e1000_rx_ring *rx_ring); |
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134 void e1000_update_stats(struct e1000_adapter *adapter); |
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135 |
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136 static int e1000_init_module(void); |
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137 static void e1000_exit_module(void); |
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138 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
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139 static void __devexit e1000_remove(struct pci_dev *pdev); |
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140 static int e1000_alloc_queues(struct e1000_adapter *adapter); |
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141 static int e1000_sw_init(struct e1000_adapter *adapter); |
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142 static int e1000_open(struct net_device *netdev); |
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143 static int e1000_close(struct net_device *netdev); |
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144 static void e1000_configure_tx(struct e1000_adapter *adapter); |
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145 static void e1000_configure_rx(struct e1000_adapter *adapter); |
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146 static void e1000_setup_rctl(struct e1000_adapter *adapter); |
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147 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
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148 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); |
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149 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
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150 struct e1000_tx_ring *tx_ring); |
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151 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
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152 struct e1000_rx_ring *rx_ring); |
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153 static void e1000_set_multi(struct net_device *netdev); |
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154 static void e1000_update_phy_info(unsigned long data); |
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155 static void e1000_watchdog(unsigned long data); |
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156 static void e1000_82547_tx_fifo_stall(unsigned long data); |
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157 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); |
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158 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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159 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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160 static int e1000_set_mac(struct net_device *netdev, void *p); |
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161 void ec_poll(struct net_device *); |
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162 static irqreturn_t e1000_intr(int irq, void *data); |
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163 static irqreturn_t e1000_intr_msi(int irq, void *data); |
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164 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter, |
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165 struct e1000_tx_ring *tx_ring); |
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166 #ifdef CONFIG_E1000_NAPI |
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167 static int e1000_clean(struct net_device *poll_dev, int *budget); |
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168 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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169 struct e1000_rx_ring *rx_ring, |
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170 int *work_done, int work_to_do); |
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171 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
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172 struct e1000_rx_ring *rx_ring, |
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173 int *work_done, int work_to_do); |
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174 #else |
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175 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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176 struct e1000_rx_ring *rx_ring); |
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177 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
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178 struct e1000_rx_ring *rx_ring); |
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179 #endif |
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180 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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181 struct e1000_rx_ring *rx_ring, |
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182 int cleaned_count); |
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183 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
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184 struct e1000_rx_ring *rx_ring, |
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185 int cleaned_count); |
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186 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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187 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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188 int cmd); |
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189 void e1000_set_ethtool_ops(struct net_device *netdev); |
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190 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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191 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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192 static void e1000_tx_timeout(struct net_device *dev); |
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193 static void e1000_reset_task(struct work_struct *work); |
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194 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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195 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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196 struct sk_buff *skb); |
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197 |
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198 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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199 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); |
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200 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); |
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201 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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202 |
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203 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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204 #ifdef CONFIG_PM |
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205 static int e1000_resume(struct pci_dev *pdev); |
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206 #endif |
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207 static void e1000_shutdown(struct pci_dev *pdev); |
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208 |
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209 #ifdef CONFIG_NET_POLL_CONTROLLER |
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210 /* for netdump / net console */ |
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211 static void e1000_netpoll (struct net_device *netdev); |
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212 #endif |
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213 |
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214 extern void e1000_check_options(struct e1000_adapter *adapter); |
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215 |
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216 #define COPYBREAK_DEFAULT 256 |
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217 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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218 module_param(copybreak, uint, 0644); |
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219 MODULE_PARM_DESC(copybreak, |
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220 "Maximum size of packet that is copied to a new buffer on receive"); |
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221 |
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222 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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223 pci_channel_state_t state); |
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224 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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225 static void e1000_io_resume(struct pci_dev *pdev); |
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226 |
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227 static struct pci_error_handlers e1000_err_handler = { |
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228 .error_detected = e1000_io_error_detected, |
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229 .slot_reset = e1000_io_slot_reset, |
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230 .resume = e1000_io_resume, |
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231 }; |
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232 |
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233 static struct pci_driver e1000_driver = { |
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234 .name = e1000_driver_name, |
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235 .id_table = e1000_pci_tbl, |
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236 .probe = e1000_probe, |
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237 .remove = __devexit_p(e1000_remove), |
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238 #ifdef CONFIG_PM |
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239 /* Power Managment Hooks */ |
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240 .suspend = e1000_suspend, |
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241 .resume = e1000_resume, |
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242 #endif |
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243 .shutdown = e1000_shutdown, |
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244 .err_handler = &e1000_err_handler |
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245 }; |
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246 |
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247 MODULE_AUTHOR("Florian Pose <fp@igh-essen.com>"); |
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248 MODULE_DESCRIPTION("EtherCAT-capable Intel(R) PRO/1000 Network Driver"); |
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249 MODULE_LICENSE("GPL"); |
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250 MODULE_VERSION(DRV_VERSION); |
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251 |
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252 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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253 module_param(debug, int, 0); |
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254 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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255 |
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256 /** |
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257 * e1000_init_module - Driver Registration Routine |
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258 * |
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259 * e1000_init_module is the first routine called when the driver is |
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260 * loaded. All it does is register with the PCI subsystem. |
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261 **/ |
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262 |
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263 static int __init |
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264 e1000_init_module(void) |
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265 { |
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266 int ret; |
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267 printk(KERN_INFO "%s - version %s\n", |
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268 e1000_driver_string, e1000_driver_version); |
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269 |
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270 printk(KERN_INFO "%s\n", e1000_copyright); |
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271 |
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272 ret = pci_register_driver(&e1000_driver); |
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273 if (copybreak != COPYBREAK_DEFAULT) { |
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274 if (copybreak == 0) |
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275 printk(KERN_INFO "e1000: copybreak disabled\n"); |
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276 else |
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277 printk(KERN_INFO "e1000: copybreak enabled for " |
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278 "packets <= %u bytes\n", copybreak); |
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279 } |
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280 return ret; |
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281 } |
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282 |
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283 module_init(e1000_init_module); |
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284 |
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285 /** |
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286 * e1000_exit_module - Driver Exit Cleanup Routine |
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287 * |
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288 * e1000_exit_module is called just before the driver is removed |
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289 * from memory. |
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290 **/ |
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291 |
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292 static void __exit |
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293 e1000_exit_module(void) |
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294 { |
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295 pci_unregister_driver(&e1000_driver); |
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296 } |
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297 |
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298 module_exit(e1000_exit_module); |
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299 |
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300 static int e1000_request_irq(struct e1000_adapter *adapter) |
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301 { |
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302 struct net_device *netdev = adapter->netdev; |
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303 void (*handler) = &e1000_intr; |
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304 int irq_flags = IRQF_SHARED; |
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305 int err; |
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306 |
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307 if (adapter->ecdev) |
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308 return 0; |
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309 |
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310 if (adapter->hw.mac_type >= e1000_82571) { |
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311 adapter->have_msi = !pci_enable_msi(adapter->pdev); |
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312 if (adapter->have_msi) { |
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313 handler = &e1000_intr_msi; |
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314 irq_flags = 0; |
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315 } |
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316 } |
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317 |
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318 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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319 netdev); |
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320 if (err) { |
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321 if (adapter->have_msi) |
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322 pci_disable_msi(adapter->pdev); |
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323 DPRINTK(PROBE, ERR, |
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324 "Unable to allocate interrupt Error: %d\n", err); |
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325 } |
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326 |
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327 return err; |
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328 } |
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329 |
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330 static void e1000_free_irq(struct e1000_adapter *adapter) |
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331 { |
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332 struct net_device *netdev = adapter->netdev; |
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333 |
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334 if (adapter->ecdev) |
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335 return; |
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336 |
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337 free_irq(adapter->pdev->irq, netdev); |
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338 |
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339 if (adapter->have_msi) |
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340 pci_disable_msi(adapter->pdev); |
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341 } |
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342 |
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343 /** |
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344 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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345 * @adapter: board private structure |
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346 **/ |
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347 |
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348 static void |
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349 e1000_irq_disable(struct e1000_adapter *adapter) |
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350 { |
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351 if (adapter->ecdev) |
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352 return; |
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353 |
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354 atomic_inc(&adapter->irq_sem); |
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355 E1000_WRITE_REG(&adapter->hw, IMC, ~0); |
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356 E1000_WRITE_FLUSH(&adapter->hw); |
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357 synchronize_irq(adapter->pdev->irq); |
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358 } |
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359 |
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360 /** |
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361 * e1000_irq_enable - Enable default interrupt generation settings |
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362 * @adapter: board private structure |
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363 **/ |
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364 |
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365 static void |
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366 e1000_irq_enable(struct e1000_adapter *adapter) |
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367 { |
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368 if (adapter->ecdev) |
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369 return; |
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370 |
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371 if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
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372 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
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373 E1000_WRITE_FLUSH(&adapter->hw); |
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374 } |
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375 } |
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376 |
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377 static void |
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378 e1000_update_mng_vlan(struct e1000_adapter *adapter) |
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379 { |
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380 struct net_device *netdev = adapter->netdev; |
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381 uint16_t vid = adapter->hw.mng_cookie.vlan_id; |
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382 uint16_t old_vid = adapter->mng_vlan_id; |
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383 if (adapter->vlgrp) { |
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384 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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385 if (adapter->hw.mng_cookie.status & |
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386 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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387 e1000_vlan_rx_add_vid(netdev, vid); |
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388 adapter->mng_vlan_id = vid; |
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389 } else |
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390 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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391 |
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392 if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && |
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393 (vid != old_vid) && |
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394 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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395 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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396 } else |
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397 adapter->mng_vlan_id = vid; |
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398 } |
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399 } |
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400 |
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401 /** |
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402 * e1000_release_hw_control - release control of the h/w to f/w |
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403 * @adapter: address of board private structure |
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404 * |
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405 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
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406 * For ASF and Pass Through versions of f/w this means that the |
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407 * driver is no longer loaded. For AMT version (only with 82573) i |
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408 * of the f/w this means that the network i/f is closed. |
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409 * |
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410 **/ |
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411 |
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412 static void |
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413 e1000_release_hw_control(struct e1000_adapter *adapter) |
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414 { |
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415 uint32_t ctrl_ext; |
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416 uint32_t swsm; |
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417 |
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418 /* Let firmware taken over control of h/w */ |
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419 switch (adapter->hw.mac_type) { |
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420 case e1000_82573: |
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421 swsm = E1000_READ_REG(&adapter->hw, SWSM); |
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422 E1000_WRITE_REG(&adapter->hw, SWSM, |
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423 swsm & ~E1000_SWSM_DRV_LOAD); |
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424 break; |
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425 case e1000_82571: |
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426 case e1000_82572: |
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427 case e1000_80003es2lan: |
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428 case e1000_ich8lan: |
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429 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
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430 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, |
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431 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
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432 break; |
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433 default: |
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434 break; |
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435 } |
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436 } |
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437 |
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438 /** |
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439 * e1000_get_hw_control - get control of the h/w from f/w |
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440 * @adapter: address of board private structure |
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441 * |
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442 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
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443 * For ASF and Pass Through versions of f/w this means that |
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444 * the driver is loaded. For AMT version (only with 82573) |
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445 * of the f/w this means that the network i/f is open. |
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446 * |
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447 **/ |
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448 |
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449 static void |
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450 e1000_get_hw_control(struct e1000_adapter *adapter) |
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451 { |
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452 uint32_t ctrl_ext; |
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453 uint32_t swsm; |
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454 |
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455 /* Let firmware know the driver has taken over */ |
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456 switch (adapter->hw.mac_type) { |
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457 case e1000_82573: |
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458 swsm = E1000_READ_REG(&adapter->hw, SWSM); |
|
459 E1000_WRITE_REG(&adapter->hw, SWSM, |
|
460 swsm | E1000_SWSM_DRV_LOAD); |
|
461 break; |
|
462 case e1000_82571: |
|
463 case e1000_82572: |
|
464 case e1000_80003es2lan: |
|
465 case e1000_ich8lan: |
|
466 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
|
467 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, |
|
468 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
|
469 break; |
|
470 default: |
|
471 break; |
|
472 } |
|
473 } |
|
474 |
|
475 static void |
|
476 e1000_init_manageability(struct e1000_adapter *adapter) |
|
477 { |
|
478 if (adapter->en_mng_pt) { |
|
479 uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); |
|
480 |
|
481 /* disable hardware interception of ARP */ |
|
482 manc &= ~(E1000_MANC_ARP_EN); |
|
483 |
|
484 /* enable receiving management packets to the host */ |
|
485 /* this will probably generate destination unreachable messages |
|
486 * from the host OS, but the packets will be handled on SMBUS */ |
|
487 if (adapter->hw.has_manc2h) { |
|
488 uint32_t manc2h = E1000_READ_REG(&adapter->hw, MANC2H); |
|
489 |
|
490 manc |= E1000_MANC_EN_MNG2HOST; |
|
491 #define E1000_MNG2HOST_PORT_623 (1 << 5) |
|
492 #define E1000_MNG2HOST_PORT_664 (1 << 6) |
|
493 manc2h |= E1000_MNG2HOST_PORT_623; |
|
494 manc2h |= E1000_MNG2HOST_PORT_664; |
|
495 E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h); |
|
496 } |
|
497 |
|
498 E1000_WRITE_REG(&adapter->hw, MANC, manc); |
|
499 } |
|
500 } |
|
501 |
|
502 static void |
|
503 e1000_release_manageability(struct e1000_adapter *adapter) |
|
504 { |
|
505 if (adapter->en_mng_pt) { |
|
506 uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); |
|
507 |
|
508 /* re-enable hardware interception of ARP */ |
|
509 manc |= E1000_MANC_ARP_EN; |
|
510 |
|
511 if (adapter->hw.has_manc2h) |
|
512 manc &= ~E1000_MANC_EN_MNG2HOST; |
|
513 |
|
514 /* don't explicitly have to mess with MANC2H since |
|
515 * MANC has an enable disable that gates MANC2H */ |
|
516 |
|
517 E1000_WRITE_REG(&adapter->hw, MANC, manc); |
|
518 } |
|
519 } |
|
520 |
|
521 /** |
|
522 * e1000_configure - configure the hardware for RX and TX |
|
523 * @adapter = private board structure |
|
524 **/ |
|
525 static void e1000_configure(struct e1000_adapter *adapter) |
|
526 { |
|
527 struct net_device *netdev = adapter->netdev; |
|
528 int i; |
|
529 |
|
530 e1000_set_multi(netdev); |
|
531 |
|
532 e1000_restore_vlan(adapter); |
|
533 e1000_init_manageability(adapter); |
|
534 |
|
535 e1000_configure_tx(adapter); |
|
536 e1000_setup_rctl(adapter); |
|
537 e1000_configure_rx(adapter); |
|
538 /* call E1000_DESC_UNUSED which always leaves |
|
539 * at least 1 descriptor unused to make sure |
|
540 * next_to_use != next_to_clean */ |
|
541 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
542 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
|
543 adapter->alloc_rx_buf(adapter, ring, |
|
544 E1000_DESC_UNUSED(ring)); |
|
545 } |
|
546 |
|
547 adapter->tx_queue_len = netdev->tx_queue_len; |
|
548 } |
|
549 |
|
550 int e1000_up(struct e1000_adapter *adapter) |
|
551 { |
|
552 /* hardware has been reset, we need to reload some things */ |
|
553 e1000_configure(adapter); |
|
554 |
|
555 clear_bit(__E1000_DOWN, &adapter->flags); |
|
556 |
|
557 if (!adapter->ecdev) { |
|
558 #ifdef CONFIG_E1000_NAPI |
|
559 netif_poll_enable(adapter->netdev); |
|
560 #endif |
|
561 e1000_irq_enable(adapter); |
|
562 |
|
563 /* fire a link change interrupt to start the watchdog */ |
|
564 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); |
|
565 } |
|
566 return 0; |
|
567 } |
|
568 |
|
569 /** |
|
570 * e1000_power_up_phy - restore link in case the phy was powered down |
|
571 * @adapter: address of board private structure |
|
572 * |
|
573 * The phy may be powered down to save power and turn off link when the |
|
574 * driver is unloaded and wake on lan is not enabled (among others) |
|
575 * *** this routine MUST be followed by a call to e1000_reset *** |
|
576 * |
|
577 **/ |
|
578 |
|
579 void e1000_power_up_phy(struct e1000_adapter *adapter) |
|
580 { |
|
581 uint16_t mii_reg = 0; |
|
582 |
|
583 /* Just clear the power down bit to wake the phy back up */ |
|
584 if (adapter->hw.media_type == e1000_media_type_copper) { |
|
585 /* according to the manual, the phy will retain its |
|
586 * settings across a power-down/up cycle */ |
|
587 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
|
588 mii_reg &= ~MII_CR_POWER_DOWN; |
|
589 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); |
|
590 } |
|
591 } |
|
592 |
|
593 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
594 { |
|
595 /* Power down the PHY so no link is implied when interface is down * |
|
596 * The PHY cannot be powered down if any of the following is TRUE * |
|
597 * (a) WoL is enabled |
|
598 * (b) AMT is active |
|
599 * (c) SoL/IDER session is active */ |
|
600 if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && |
|
601 adapter->hw.media_type == e1000_media_type_copper) { |
|
602 uint16_t mii_reg = 0; |
|
603 |
|
604 switch (adapter->hw.mac_type) { |
|
605 case e1000_82540: |
|
606 case e1000_82545: |
|
607 case e1000_82545_rev_3: |
|
608 case e1000_82546: |
|
609 case e1000_82546_rev_3: |
|
610 case e1000_82541: |
|
611 case e1000_82541_rev_2: |
|
612 case e1000_82547: |
|
613 case e1000_82547_rev_2: |
|
614 if (E1000_READ_REG(&adapter->hw, MANC) & |
|
615 E1000_MANC_SMBUS_EN) |
|
616 goto out; |
|
617 break; |
|
618 case e1000_82571: |
|
619 case e1000_82572: |
|
620 case e1000_82573: |
|
621 case e1000_80003es2lan: |
|
622 case e1000_ich8lan: |
|
623 if (e1000_check_mng_mode(&adapter->hw) || |
|
624 e1000_check_phy_reset_block(&adapter->hw)) |
|
625 goto out; |
|
626 break; |
|
627 default: |
|
628 goto out; |
|
629 } |
|
630 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
|
631 mii_reg |= MII_CR_POWER_DOWN; |
|
632 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); |
|
633 mdelay(1); |
|
634 } |
|
635 out: |
|
636 return; |
|
637 } |
|
638 |
|
639 void |
|
640 e1000_down(struct e1000_adapter *adapter) |
|
641 { |
|
642 struct net_device *netdev = adapter->netdev; |
|
643 |
|
644 /* signal that we're down so the interrupt handler does not |
|
645 * reschedule our watchdog timer */ |
|
646 set_bit(__E1000_DOWN, &adapter->flags); |
|
647 |
|
648 if (!adapter->ecdev) { |
|
649 #ifdef CONFIG_E1000_NAPI |
|
650 netif_poll_disable(netdev); |
|
651 #endif |
|
652 e1000_irq_disable(adapter); |
|
653 |
|
654 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
655 del_timer_sync(&adapter->watchdog_timer); |
|
656 del_timer_sync(&adapter->phy_info_timer); |
|
657 } |
|
658 |
|
659 netdev->tx_queue_len = adapter->tx_queue_len; |
|
660 adapter->link_speed = 0; |
|
661 adapter->link_duplex = 0; |
|
662 if (!adapter->ecdev) { |
|
663 netif_carrier_off(netdev); |
|
664 netif_stop_queue(netdev); |
|
665 } |
|
666 |
|
667 e1000_reset(adapter); |
|
668 e1000_clean_all_tx_rings(adapter); |
|
669 e1000_clean_all_rx_rings(adapter); |
|
670 } |
|
671 |
|
672 void |
|
673 e1000_reinit_locked(struct e1000_adapter *adapter) |
|
674 { |
|
675 WARN_ON(in_interrupt()); |
|
676 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
677 msleep(1); |
|
678 e1000_down(adapter); |
|
679 e1000_up(adapter); |
|
680 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
681 } |
|
682 |
|
683 void |
|
684 e1000_reset(struct e1000_adapter *adapter) |
|
685 { |
|
686 uint32_t pba = 0, tx_space, min_tx_space, min_rx_space; |
|
687 uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
|
688 boolean_t legacy_pba_adjust = FALSE; |
|
689 |
|
690 /* Repartition Pba for greater than 9k mtu |
|
691 * To take effect CTRL.RST is required. |
|
692 */ |
|
693 |
|
694 switch (adapter->hw.mac_type) { |
|
695 case e1000_82542_rev2_0: |
|
696 case e1000_82542_rev2_1: |
|
697 case e1000_82543: |
|
698 case e1000_82544: |
|
699 case e1000_82540: |
|
700 case e1000_82541: |
|
701 case e1000_82541_rev_2: |
|
702 legacy_pba_adjust = TRUE; |
|
703 pba = E1000_PBA_48K; |
|
704 break; |
|
705 case e1000_82545: |
|
706 case e1000_82545_rev_3: |
|
707 case e1000_82546: |
|
708 case e1000_82546_rev_3: |
|
709 pba = E1000_PBA_48K; |
|
710 break; |
|
711 case e1000_82547: |
|
712 case e1000_82547_rev_2: |
|
713 legacy_pba_adjust = TRUE; |
|
714 pba = E1000_PBA_30K; |
|
715 break; |
|
716 case e1000_82571: |
|
717 case e1000_82572: |
|
718 case e1000_80003es2lan: |
|
719 pba = E1000_PBA_38K; |
|
720 break; |
|
721 case e1000_82573: |
|
722 pba = E1000_PBA_20K; |
|
723 break; |
|
724 case e1000_ich8lan: |
|
725 pba = E1000_PBA_8K; |
|
726 case e1000_undefined: |
|
727 case e1000_num_macs: |
|
728 break; |
|
729 } |
|
730 |
|
731 if (legacy_pba_adjust == TRUE) { |
|
732 if (adapter->netdev->mtu > E1000_RXBUFFER_8192) |
|
733 pba -= 8; /* allocate more FIFO for Tx */ |
|
734 |
|
735 if (adapter->hw.mac_type == e1000_82547) { |
|
736 adapter->tx_fifo_head = 0; |
|
737 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
738 adapter->tx_fifo_size = |
|
739 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
740 atomic_set(&adapter->tx_fifo_stall, 0); |
|
741 } |
|
742 } else if (adapter->hw.max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
743 /* adjust PBA for jumbo frames */ |
|
744 E1000_WRITE_REG(&adapter->hw, PBA, pba); |
|
745 |
|
746 /* To maintain wire speed transmits, the Tx FIFO should be |
|
747 * large enough to accomodate two full transmit packets, |
|
748 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
749 * the Rx FIFO should be large enough to accomodate at least |
|
750 * one full receive packet and is similarly rounded up and |
|
751 * expressed in KB. */ |
|
752 pba = E1000_READ_REG(&adapter->hw, PBA); |
|
753 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
754 tx_space = pba >> 16; |
|
755 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
756 pba &= 0xffff; |
|
757 /* don't include ethernet FCS because hardware appends/strips */ |
|
758 min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE + |
|
759 VLAN_TAG_SIZE; |
|
760 min_tx_space = min_rx_space; |
|
761 min_tx_space *= 2; |
|
762 min_tx_space = ALIGN(min_tx_space, 1024); |
|
763 min_tx_space >>= 10; |
|
764 min_rx_space = ALIGN(min_rx_space, 1024); |
|
765 min_rx_space >>= 10; |
|
766 |
|
767 /* If current Tx allocation is less than the min Tx FIFO size, |
|
768 * and the min Tx FIFO size is less than the current Rx FIFO |
|
769 * allocation, take space away from current Rx allocation */ |
|
770 if (tx_space < min_tx_space && |
|
771 ((min_tx_space - tx_space) < pba)) { |
|
772 pba = pba - (min_tx_space - tx_space); |
|
773 |
|
774 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
775 switch (adapter->hw.mac_type) { |
|
776 case e1000_82545 ... e1000_82546_rev_3: |
|
777 pba &= ~(E1000_PBA_8K - 1); |
|
778 break; |
|
779 default: |
|
780 break; |
|
781 } |
|
782 |
|
783 /* if short on rx space, rx wins and must trump tx |
|
784 * adjustment or use Early Receive if available */ |
|
785 if (pba < min_rx_space) { |
|
786 switch (adapter->hw.mac_type) { |
|
787 case e1000_82573: |
|
788 /* ERT enabled in e1000_configure_rx */ |
|
789 break; |
|
790 default: |
|
791 pba = min_rx_space; |
|
792 break; |
|
793 } |
|
794 } |
|
795 } |
|
796 } |
|
797 |
|
798 E1000_WRITE_REG(&adapter->hw, PBA, pba); |
|
799 |
|
800 /* flow control settings */ |
|
801 /* Set the FC high water mark to 90% of the FIFO size. |
|
802 * Required to clear last 3 LSB */ |
|
803 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; |
|
804 /* We can't use 90% on small FIFOs because the remainder |
|
805 * would be less than 1 full frame. In this case, we size |
|
806 * it to allow at least a full frame above the high water |
|
807 * mark. */ |
|
808 if (pba < E1000_PBA_16K) |
|
809 fc_high_water_mark = (pba * 1024) - 1600; |
|
810 |
|
811 adapter->hw.fc_high_water = fc_high_water_mark; |
|
812 adapter->hw.fc_low_water = fc_high_water_mark - 8; |
|
813 if (adapter->hw.mac_type == e1000_80003es2lan) |
|
814 adapter->hw.fc_pause_time = 0xFFFF; |
|
815 else |
|
816 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; |
|
817 adapter->hw.fc_send_xon = 1; |
|
818 adapter->hw.fc = adapter->hw.original_fc; |
|
819 |
|
820 /* Allow time for pending master requests to run */ |
|
821 e1000_reset_hw(&adapter->hw); |
|
822 if (adapter->hw.mac_type >= e1000_82544) |
|
823 E1000_WRITE_REG(&adapter->hw, WUC, 0); |
|
824 |
|
825 if (e1000_init_hw(&adapter->hw)) |
|
826 DPRINTK(PROBE, ERR, "Hardware Error\n"); |
|
827 e1000_update_mng_vlan(adapter); |
|
828 |
|
829 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
830 if (adapter->hw.mac_type >= e1000_82544 && |
|
831 adapter->hw.mac_type <= e1000_82547_rev_2 && |
|
832 adapter->hw.autoneg == 1 && |
|
833 adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) { |
|
834 uint32_t ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
835 /* clear phy power management bit if we are in gig only mode, |
|
836 * which if enabled will attempt negotiation to 100Mb, which |
|
837 * can cause a loss of link at power off or driver unload */ |
|
838 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
839 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
840 } |
|
841 |
|
842 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
843 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); |
|
844 |
|
845 e1000_reset_adaptive(&adapter->hw); |
|
846 e1000_phy_get_info(&adapter->hw, &adapter->phy_info); |
|
847 |
|
848 if (!adapter->smart_power_down && |
|
849 (adapter->hw.mac_type == e1000_82571 || |
|
850 adapter->hw.mac_type == e1000_82572)) { |
|
851 uint16_t phy_data = 0; |
|
852 /* speed up time to link by disabling smart power down, ignore |
|
853 * the return value of this function because there is nothing |
|
854 * different we would do if it failed */ |
|
855 e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, |
|
856 &phy_data); |
|
857 phy_data &= ~IGP02E1000_PM_SPD; |
|
858 e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, |
|
859 phy_data); |
|
860 } |
|
861 |
|
862 e1000_release_manageability(adapter); |
|
863 } |
|
864 |
|
865 /** |
|
866 * e1000_probe - Device Initialization Routine |
|
867 * @pdev: PCI device information struct |
|
868 * @ent: entry in e1000_pci_tbl |
|
869 * |
|
870 * Returns 0 on success, negative on failure |
|
871 * |
|
872 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
873 * The OS initialization, configuring of the adapter private structure, |
|
874 * and a hardware reset occur. |
|
875 **/ |
|
876 |
|
877 static int __devinit |
|
878 e1000_probe(struct pci_dev *pdev, |
|
879 const struct pci_device_id *ent) |
|
880 { |
|
881 struct net_device *netdev; |
|
882 struct e1000_adapter *adapter; |
|
883 unsigned long mmio_start, mmio_len; |
|
884 unsigned long flash_start, flash_len; |
|
885 |
|
886 static int cards_found = 0; |
|
887 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
888 int i, err, pci_using_dac; |
|
889 uint16_t eeprom_data = 0; |
|
890 uint16_t eeprom_apme_mask = E1000_EEPROM_APME; |
|
891 if ((err = pci_enable_device(pdev))) |
|
892 return err; |
|
893 |
|
894 if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
|
895 !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { |
|
896 pci_using_dac = 1; |
|
897 } else { |
|
898 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) && |
|
899 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { |
|
900 E1000_ERR("No usable DMA configuration, aborting\n"); |
|
901 goto err_dma; |
|
902 } |
|
903 pci_using_dac = 0; |
|
904 } |
|
905 |
|
906 if ((err = pci_request_regions(pdev, e1000_driver_name))) |
|
907 goto err_pci_reg; |
|
908 |
|
909 pci_set_master(pdev); |
|
910 |
|
911 err = -ENOMEM; |
|
912 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
913 if (!netdev) |
|
914 goto err_alloc_etherdev; |
|
915 |
|
916 SET_MODULE_OWNER(netdev); |
|
917 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
918 |
|
919 pci_set_drvdata(pdev, netdev); |
|
920 adapter = netdev_priv(netdev); |
|
921 adapter->netdev = netdev; |
|
922 adapter->pdev = pdev; |
|
923 adapter->hw.back = adapter; |
|
924 adapter->msg_enable = (1 << debug) - 1; |
|
925 |
|
926 mmio_start = pci_resource_start(pdev, BAR_0); |
|
927 mmio_len = pci_resource_len(pdev, BAR_0); |
|
928 |
|
929 err = -EIO; |
|
930 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
|
931 if (!adapter->hw.hw_addr) |
|
932 goto err_ioremap; |
|
933 |
|
934 for (i = BAR_1; i <= BAR_5; i++) { |
|
935 if (pci_resource_len(pdev, i) == 0) |
|
936 continue; |
|
937 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
938 adapter->hw.io_base = pci_resource_start(pdev, i); |
|
939 break; |
|
940 } |
|
941 } |
|
942 |
|
943 netdev->open = &e1000_open; |
|
944 netdev->stop = &e1000_close; |
|
945 netdev->hard_start_xmit = &e1000_xmit_frame; |
|
946 netdev->get_stats = &e1000_get_stats; |
|
947 netdev->set_multicast_list = &e1000_set_multi; |
|
948 netdev->set_mac_address = &e1000_set_mac; |
|
949 netdev->change_mtu = &e1000_change_mtu; |
|
950 netdev->do_ioctl = &e1000_ioctl; |
|
951 e1000_set_ethtool_ops(netdev); |
|
952 netdev->tx_timeout = &e1000_tx_timeout; |
|
953 netdev->watchdog_timeo = 5 * HZ; |
|
954 #ifdef CONFIG_E1000_NAPI |
|
955 netdev->poll = &e1000_clean; |
|
956 netdev->weight = 64; |
|
957 #endif |
|
958 netdev->vlan_rx_register = e1000_vlan_rx_register; |
|
959 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; |
|
960 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; |
|
961 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
962 netdev->poll_controller = e1000_netpoll; |
|
963 #endif |
|
964 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
965 |
|
966 netdev->mem_start = mmio_start; |
|
967 netdev->mem_end = mmio_start + mmio_len; |
|
968 netdev->base_addr = adapter->hw.io_base; |
|
969 |
|
970 adapter->bd_number = cards_found; |
|
971 |
|
972 /* setup the private structure */ |
|
973 |
|
974 if ((err = e1000_sw_init(adapter))) |
|
975 goto err_sw_init; |
|
976 |
|
977 err = -EIO; |
|
978 /* Flash BAR mapping must happen after e1000_sw_init |
|
979 * because it depends on mac_type */ |
|
980 if ((adapter->hw.mac_type == e1000_ich8lan) && |
|
981 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
982 flash_start = pci_resource_start(pdev, 1); |
|
983 flash_len = pci_resource_len(pdev, 1); |
|
984 adapter->hw.flash_address = ioremap(flash_start, flash_len); |
|
985 if (!adapter->hw.flash_address) |
|
986 goto err_flashmap; |
|
987 } |
|
988 |
|
989 if (e1000_check_phy_reset_block(&adapter->hw)) |
|
990 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
|
991 |
|
992 if (adapter->hw.mac_type >= e1000_82543) { |
|
993 netdev->features = NETIF_F_SG | |
|
994 NETIF_F_HW_CSUM | |
|
995 NETIF_F_HW_VLAN_TX | |
|
996 NETIF_F_HW_VLAN_RX | |
|
997 NETIF_F_HW_VLAN_FILTER; |
|
998 if (adapter->hw.mac_type == e1000_ich8lan) |
|
999 netdev->features &= ~NETIF_F_HW_VLAN_FILTER; |
|
1000 } |
|
1001 |
|
1002 if ((adapter->hw.mac_type >= e1000_82544) && |
|
1003 (adapter->hw.mac_type != e1000_82547)) |
|
1004 netdev->features |= NETIF_F_TSO; |
|
1005 |
|
1006 if (adapter->hw.mac_type > e1000_82547_rev_2) |
|
1007 netdev->features |= NETIF_F_TSO6; |
|
1008 if (pci_using_dac) |
|
1009 netdev->features |= NETIF_F_HIGHDMA; |
|
1010 |
|
1011 netdev->features |= NETIF_F_LLTX; |
|
1012 |
|
1013 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
|
1014 |
|
1015 /* initialize eeprom parameters */ |
|
1016 |
|
1017 if (e1000_init_eeprom_params(&adapter->hw)) { |
|
1018 E1000_ERR("EEPROM initialization failed\n"); |
|
1019 goto err_eeprom; |
|
1020 } |
|
1021 |
|
1022 /* before reading the EEPROM, reset the controller to |
|
1023 * put the device in a known good starting state */ |
|
1024 |
|
1025 e1000_reset_hw(&adapter->hw); |
|
1026 |
|
1027 /* make sure the EEPROM is good */ |
|
1028 |
|
1029 if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
|
1030 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
|
1031 goto err_eeprom; |
|
1032 } |
|
1033 |
|
1034 /* copy the MAC address out of the EEPROM */ |
|
1035 |
|
1036 if (e1000_read_mac_addr(&adapter->hw)) |
|
1037 DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
|
1038 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); |
|
1039 memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
|
1040 |
|
1041 if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
1042 DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
|
1043 goto err_eeprom; |
|
1044 } |
|
1045 |
|
1046 e1000_get_bus_info(&adapter->hw); |
|
1047 |
|
1048 init_timer(&adapter->tx_fifo_stall_timer); |
|
1049 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; |
|
1050 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; |
|
1051 |
|
1052 init_timer(&adapter->watchdog_timer); |
|
1053 adapter->watchdog_timer.function = &e1000_watchdog; |
|
1054 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
1055 |
|
1056 init_timer(&adapter->phy_info_timer); |
|
1057 adapter->phy_info_timer.function = &e1000_update_phy_info; |
|
1058 adapter->phy_info_timer.data = (unsigned long) adapter; |
|
1059 |
|
1060 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
1061 |
|
1062 e1000_check_options(adapter); |
|
1063 |
|
1064 /* Initial Wake on LAN setting |
|
1065 * If APM wake is enabled in the EEPROM, |
|
1066 * enable the ACPI Magic Packet filter |
|
1067 */ |
|
1068 |
|
1069 switch (adapter->hw.mac_type) { |
|
1070 case e1000_82542_rev2_0: |
|
1071 case e1000_82542_rev2_1: |
|
1072 case e1000_82543: |
|
1073 break; |
|
1074 case e1000_82544: |
|
1075 e1000_read_eeprom(&adapter->hw, |
|
1076 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
1077 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
1078 break; |
|
1079 case e1000_ich8lan: |
|
1080 e1000_read_eeprom(&adapter->hw, |
|
1081 EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); |
|
1082 eeprom_apme_mask = E1000_EEPROM_ICH8_APME; |
|
1083 break; |
|
1084 case e1000_82546: |
|
1085 case e1000_82546_rev_3: |
|
1086 case e1000_82571: |
|
1087 case e1000_80003es2lan: |
|
1088 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
|
1089 e1000_read_eeprom(&adapter->hw, |
|
1090 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
1091 break; |
|
1092 } |
|
1093 /* Fall Through */ |
|
1094 default: |
|
1095 e1000_read_eeprom(&adapter->hw, |
|
1096 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1097 break; |
|
1098 } |
|
1099 if (eeprom_data & eeprom_apme_mask) |
|
1100 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1101 |
|
1102 /* now that we have the eeprom settings, apply the special cases |
|
1103 * where the eeprom may be wrong or the board simply won't support |
|
1104 * wake on lan on a particular port */ |
|
1105 switch (pdev->device) { |
|
1106 case E1000_DEV_ID_82546GB_PCIE: |
|
1107 adapter->eeprom_wol = 0; |
|
1108 break; |
|
1109 case E1000_DEV_ID_82546EB_FIBER: |
|
1110 case E1000_DEV_ID_82546GB_FIBER: |
|
1111 case E1000_DEV_ID_82571EB_FIBER: |
|
1112 /* Wake events only supported on port A for dual fiber |
|
1113 * regardless of eeprom setting */ |
|
1114 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) |
|
1115 adapter->eeprom_wol = 0; |
|
1116 break; |
|
1117 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1118 case E1000_DEV_ID_82571EB_QUAD_COPPER: |
|
1119 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: |
|
1120 /* if quad port adapter, disable WoL on all but port A */ |
|
1121 if (global_quad_port_a != 0) |
|
1122 adapter->eeprom_wol = 0; |
|
1123 else |
|
1124 adapter->quad_port_a = 1; |
|
1125 /* Reset for multiple quad port adapters */ |
|
1126 if (++global_quad_port_a == 4) |
|
1127 global_quad_port_a = 0; |
|
1128 break; |
|
1129 } |
|
1130 |
|
1131 /* initialize the wol settings based on the eeprom settings */ |
|
1132 adapter->wol = adapter->eeprom_wol; |
|
1133 |
|
1134 /* print bus type/speed/width info */ |
|
1135 { |
|
1136 struct e1000_hw *hw = &adapter->hw; |
|
1137 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", |
|
1138 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : |
|
1139 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), |
|
1140 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : |
|
1141 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : |
|
1142 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : |
|
1143 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : |
|
1144 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), |
|
1145 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : |
|
1146 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : |
|
1147 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : |
|
1148 "32-bit")); |
|
1149 } |
|
1150 |
|
1151 for (i = 0; i < 6; i++) |
|
1152 printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); |
|
1153 |
|
1154 /* reset the hardware with the new settings */ |
|
1155 e1000_reset(adapter); |
|
1156 |
|
1157 /* If the controller is 82573 and f/w is AMT, do not set |
|
1158 * DRV_LOAD until the interface is up. For all other cases, |
|
1159 * let the f/w know that the h/w is now under the control |
|
1160 * of the driver. */ |
|
1161 if (adapter->hw.mac_type != e1000_82573 || |
|
1162 !e1000_check_mng_mode(&adapter->hw)) |
|
1163 e1000_get_hw_control(adapter); |
|
1164 |
|
1165 // offer device to EtherCAT master module |
|
1166 if (ecdev_offer(netdev, ec_poll, THIS_MODULE, &adapter->ecdev)) { |
|
1167 DPRINTK(PROBE, ERR, "Failed to offer device.\n"); |
|
1168 goto err_register; |
|
1169 } |
|
1170 |
|
1171 if (adapter->ecdev) { |
|
1172 if (ecdev_open(adapter->ecdev)) { |
|
1173 ecdev_withdraw(adapter->ecdev); |
|
1174 goto err_register; |
|
1175 } |
|
1176 } else { |
|
1177 /* tell the stack to leave us alone until e1000_open() is called */ |
|
1178 netif_carrier_off(netdev); |
|
1179 netif_stop_queue(netdev); |
|
1180 #ifdef CONFIG_E1000_NAPI |
|
1181 netif_poll_disable(netdev); |
|
1182 #endif |
|
1183 |
|
1184 strcpy(netdev->name, "eth%d"); |
|
1185 if ((err = register_netdev(netdev))) |
|
1186 goto err_register; |
|
1187 } |
|
1188 |
|
1189 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
|
1190 |
|
1191 cards_found++; |
|
1192 return 0; |
|
1193 |
|
1194 err_register: |
|
1195 e1000_release_hw_control(adapter); |
|
1196 err_eeprom: |
|
1197 if (!e1000_check_phy_reset_block(&adapter->hw)) |
|
1198 e1000_phy_hw_reset(&adapter->hw); |
|
1199 |
|
1200 if (adapter->hw.flash_address) |
|
1201 iounmap(adapter->hw.flash_address); |
|
1202 err_flashmap: |
|
1203 #ifdef CONFIG_E1000_NAPI |
|
1204 for (i = 0; i < adapter->num_rx_queues; i++) |
|
1205 dev_put(&adapter->polling_netdev[i]); |
|
1206 #endif |
|
1207 |
|
1208 kfree(adapter->tx_ring); |
|
1209 kfree(adapter->rx_ring); |
|
1210 #ifdef CONFIG_E1000_NAPI |
|
1211 kfree(adapter->polling_netdev); |
|
1212 #endif |
|
1213 err_sw_init: |
|
1214 iounmap(adapter->hw.hw_addr); |
|
1215 err_ioremap: |
|
1216 free_netdev(netdev); |
|
1217 err_alloc_etherdev: |
|
1218 pci_release_regions(pdev); |
|
1219 err_pci_reg: |
|
1220 err_dma: |
|
1221 pci_disable_device(pdev); |
|
1222 return err; |
|
1223 } |
|
1224 |
|
1225 /** |
|
1226 * e1000_remove - Device Removal Routine |
|
1227 * @pdev: PCI device information struct |
|
1228 * |
|
1229 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1230 * that it should release a PCI device. The could be caused by a |
|
1231 * Hot-Plug event, or because the driver is going to be removed from |
|
1232 * memory. |
|
1233 **/ |
|
1234 |
|
1235 static void __devexit |
|
1236 e1000_remove(struct pci_dev *pdev) |
|
1237 { |
|
1238 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1239 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1240 #ifdef CONFIG_E1000_NAPI |
|
1241 int i; |
|
1242 #endif |
|
1243 |
|
1244 cancel_work_sync(&adapter->reset_task); |
|
1245 |
|
1246 e1000_release_manageability(adapter); |
|
1247 |
|
1248 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
1249 * would have already happened in close and is redundant. */ |
|
1250 e1000_release_hw_control(adapter); |
|
1251 |
|
1252 if (adapter->ecdev) { |
|
1253 ecdev_close(adapter->ecdev); |
|
1254 ecdev_withdraw(adapter->ecdev); |
|
1255 } else { |
|
1256 unregister_netdev(netdev); |
|
1257 } |
|
1258 #ifdef CONFIG_E1000_NAPI |
|
1259 for (i = 0; i < adapter->num_rx_queues; i++) |
|
1260 dev_put(&adapter->polling_netdev[i]); |
|
1261 #endif |
|
1262 |
|
1263 if (!e1000_check_phy_reset_block(&adapter->hw)) |
|
1264 e1000_phy_hw_reset(&adapter->hw); |
|
1265 |
|
1266 kfree(adapter->tx_ring); |
|
1267 kfree(adapter->rx_ring); |
|
1268 #ifdef CONFIG_E1000_NAPI |
|
1269 kfree(adapter->polling_netdev); |
|
1270 #endif |
|
1271 |
|
1272 iounmap(adapter->hw.hw_addr); |
|
1273 if (adapter->hw.flash_address) |
|
1274 iounmap(adapter->hw.flash_address); |
|
1275 pci_release_regions(pdev); |
|
1276 |
|
1277 free_netdev(netdev); |
|
1278 |
|
1279 pci_disable_device(pdev); |
|
1280 } |
|
1281 |
|
1282 /** |
|
1283 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1284 * @adapter: board private structure to initialize |
|
1285 * |
|
1286 * e1000_sw_init initializes the Adapter private data structure. |
|
1287 * Fields are initialized based on PCI device information and |
|
1288 * OS network device settings (MTU size). |
|
1289 **/ |
|
1290 |
|
1291 static int __devinit |
|
1292 e1000_sw_init(struct e1000_adapter *adapter) |
|
1293 { |
|
1294 struct e1000_hw *hw = &adapter->hw; |
|
1295 struct net_device *netdev = adapter->netdev; |
|
1296 struct pci_dev *pdev = adapter->pdev; |
|
1297 #ifdef CONFIG_E1000_NAPI |
|
1298 int i; |
|
1299 #endif |
|
1300 |
|
1301 /* PCI config space info */ |
|
1302 |
|
1303 hw->vendor_id = pdev->vendor; |
|
1304 hw->device_id = pdev->device; |
|
1305 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
1306 hw->subsystem_id = pdev->subsystem_device; |
|
1307 |
|
1308 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); |
|
1309 |
|
1310 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
1311 |
|
1312 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1313 adapter->rx_ps_bsize0 = E1000_RXBUFFER_128; |
|
1314 hw->max_frame_size = netdev->mtu + |
|
1315 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
1316 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
1317 |
|
1318 /* identify the MAC */ |
|
1319 |
|
1320 if (e1000_set_mac_type(hw)) { |
|
1321 DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
|
1322 return -EIO; |
|
1323 } |
|
1324 |
|
1325 switch (hw->mac_type) { |
|
1326 default: |
|
1327 break; |
|
1328 case e1000_82541: |
|
1329 case e1000_82547: |
|
1330 case e1000_82541_rev_2: |
|
1331 case e1000_82547_rev_2: |
|
1332 hw->phy_init_script = 1; |
|
1333 break; |
|
1334 } |
|
1335 |
|
1336 e1000_set_media_type(hw); |
|
1337 |
|
1338 hw->wait_autoneg_complete = FALSE; |
|
1339 hw->tbi_compatibility_en = TRUE; |
|
1340 hw->adaptive_ifs = TRUE; |
|
1341 |
|
1342 /* Copper options */ |
|
1343 |
|
1344 if (hw->media_type == e1000_media_type_copper) { |
|
1345 hw->mdix = AUTO_ALL_MODES; |
|
1346 hw->disable_polarity_correction = FALSE; |
|
1347 hw->master_slave = E1000_MASTER_SLAVE; |
|
1348 } |
|
1349 |
|
1350 adapter->num_tx_queues = 1; |
|
1351 adapter->num_rx_queues = 1; |
|
1352 |
|
1353 if (e1000_alloc_queues(adapter)) { |
|
1354 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); |
|
1355 return -ENOMEM; |
|
1356 } |
|
1357 |
|
1358 #ifdef CONFIG_E1000_NAPI |
|
1359 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1360 adapter->polling_netdev[i].priv = adapter; |
|
1361 adapter->polling_netdev[i].poll = &e1000_clean; |
|
1362 adapter->polling_netdev[i].weight = 64; |
|
1363 dev_hold(&adapter->polling_netdev[i]); |
|
1364 set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); |
|
1365 } |
|
1366 spin_lock_init(&adapter->tx_queue_lock); |
|
1367 #endif |
|
1368 |
|
1369 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1370 atomic_set(&adapter->irq_sem, 0); |
|
1371 e1000_irq_disable(adapter); |
|
1372 |
|
1373 spin_lock_init(&adapter->stats_lock); |
|
1374 |
|
1375 set_bit(__E1000_DOWN, &adapter->flags); |
|
1376 |
|
1377 return 0; |
|
1378 } |
|
1379 |
|
1380 /** |
|
1381 * e1000_alloc_queues - Allocate memory for all rings |
|
1382 * @adapter: board private structure to initialize |
|
1383 * |
|
1384 * We allocate one ring per queue at run-time since we don't know the |
|
1385 * number of queues at compile-time. The polling_netdev array is |
|
1386 * intended for Multiqueue, but should work fine with a single queue. |
|
1387 **/ |
|
1388 |
|
1389 static int __devinit |
|
1390 e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1391 { |
|
1392 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1393 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1394 if (!adapter->tx_ring) |
|
1395 return -ENOMEM; |
|
1396 |
|
1397 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1398 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1399 if (!adapter->rx_ring) { |
|
1400 kfree(adapter->tx_ring); |
|
1401 return -ENOMEM; |
|
1402 } |
|
1403 |
|
1404 #ifdef CONFIG_E1000_NAPI |
|
1405 adapter->polling_netdev = kcalloc(adapter->num_rx_queues, |
|
1406 sizeof(struct net_device), |
|
1407 GFP_KERNEL); |
|
1408 if (!adapter->polling_netdev) { |
|
1409 kfree(adapter->tx_ring); |
|
1410 kfree(adapter->rx_ring); |
|
1411 return -ENOMEM; |
|
1412 } |
|
1413 #endif |
|
1414 |
|
1415 return E1000_SUCCESS; |
|
1416 } |
|
1417 |
|
1418 /** |
|
1419 * e1000_open - Called when a network interface is made active |
|
1420 * @netdev: network interface device structure |
|
1421 * |
|
1422 * Returns 0 on success, negative value on failure |
|
1423 * |
|
1424 * The open entry point is called when a network interface is made |
|
1425 * active by the system (IFF_UP). At this point all resources needed |
|
1426 * for transmit and receive operations are allocated, the interrupt |
|
1427 * handler is registered with the OS, the watchdog timer is started, |
|
1428 * and the stack is notified that the interface is ready. |
|
1429 **/ |
|
1430 |
|
1431 static int |
|
1432 e1000_open(struct net_device *netdev) |
|
1433 { |
|
1434 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1435 int err; |
|
1436 |
|
1437 /* disallow open during test */ |
|
1438 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1439 return -EBUSY; |
|
1440 |
|
1441 /* allocate transmit descriptors */ |
|
1442 err = e1000_setup_all_tx_resources(adapter); |
|
1443 if (err) |
|
1444 goto err_setup_tx; |
|
1445 |
|
1446 /* allocate receive descriptors */ |
|
1447 err = e1000_setup_all_rx_resources(adapter); |
|
1448 if (err) |
|
1449 goto err_setup_rx; |
|
1450 |
|
1451 e1000_power_up_phy(adapter); |
|
1452 |
|
1453 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1454 if ((adapter->hw.mng_cookie.status & |
|
1455 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1456 e1000_update_mng_vlan(adapter); |
|
1457 } |
|
1458 |
|
1459 /* If AMT is enabled, let the firmware know that the network |
|
1460 * interface is now open */ |
|
1461 if (adapter->hw.mac_type == e1000_82573 && |
|
1462 e1000_check_mng_mode(&adapter->hw)) |
|
1463 e1000_get_hw_control(adapter); |
|
1464 |
|
1465 /* before we allocate an interrupt, we must be ready to handle it. |
|
1466 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1467 * as soon as we call pci_request_irq, so we have to setup our |
|
1468 * clean_rx handler before we do so. */ |
|
1469 e1000_configure(adapter); |
|
1470 |
|
1471 err = e1000_request_irq(adapter); |
|
1472 if (err) |
|
1473 goto err_req_irq; |
|
1474 |
|
1475 /* From here on the code is the same as e1000_up() */ |
|
1476 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1477 |
|
1478 #ifdef CONFIG_E1000_NAPI |
|
1479 if (!adapter->ecdev) |
|
1480 netif_poll_enable(netdev); |
|
1481 #endif |
|
1482 |
|
1483 e1000_irq_enable(adapter); |
|
1484 |
|
1485 /* fire a link status change interrupt to start the watchdog */ |
|
1486 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); |
|
1487 |
|
1488 return E1000_SUCCESS; |
|
1489 |
|
1490 err_req_irq: |
|
1491 e1000_release_hw_control(adapter); |
|
1492 e1000_power_down_phy(adapter); |
|
1493 e1000_free_all_rx_resources(adapter); |
|
1494 err_setup_rx: |
|
1495 e1000_free_all_tx_resources(adapter); |
|
1496 err_setup_tx: |
|
1497 e1000_reset(adapter); |
|
1498 |
|
1499 return err; |
|
1500 } |
|
1501 |
|
1502 /** |
|
1503 * e1000_close - Disables a network interface |
|
1504 * @netdev: network interface device structure |
|
1505 * |
|
1506 * Returns 0, this is not allowed to fail |
|
1507 * |
|
1508 * The close entry point is called when an interface is de-activated |
|
1509 * by the OS. The hardware is still under the drivers control, but |
|
1510 * needs to be disabled. A global MAC reset is issued to stop the |
|
1511 * hardware, and all transmit and receive resources are freed. |
|
1512 **/ |
|
1513 |
|
1514 static int |
|
1515 e1000_close(struct net_device *netdev) |
|
1516 { |
|
1517 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1518 |
|
1519 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1520 e1000_down(adapter); |
|
1521 e1000_power_down_phy(adapter); |
|
1522 e1000_free_irq(adapter); |
|
1523 |
|
1524 e1000_free_all_tx_resources(adapter); |
|
1525 e1000_free_all_rx_resources(adapter); |
|
1526 |
|
1527 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1528 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1529 if ((adapter->hw.mng_cookie.status & |
|
1530 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1531 !(adapter->vlgrp && |
|
1532 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1533 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1534 } |
|
1535 |
|
1536 /* If AMT is enabled, let the firmware know that the network |
|
1537 * interface is now closed */ |
|
1538 if (adapter->hw.mac_type == e1000_82573 && |
|
1539 e1000_check_mng_mode(&adapter->hw)) |
|
1540 e1000_release_hw_control(adapter); |
|
1541 |
|
1542 return 0; |
|
1543 } |
|
1544 |
|
1545 /** |
|
1546 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1547 * @adapter: address of board private structure |
|
1548 * @start: address of beginning of memory |
|
1549 * @len: length of memory |
|
1550 **/ |
|
1551 static boolean_t |
|
1552 e1000_check_64k_bound(struct e1000_adapter *adapter, |
|
1553 void *start, unsigned long len) |
|
1554 { |
|
1555 unsigned long begin = (unsigned long) start; |
|
1556 unsigned long end = begin + len; |
|
1557 |
|
1558 /* First rev 82545 and 82546 need to not allow any memory |
|
1559 * write location to cross 64k boundary due to errata 23 */ |
|
1560 if (adapter->hw.mac_type == e1000_82545 || |
|
1561 adapter->hw.mac_type == e1000_82546) { |
|
1562 return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
|
1563 } |
|
1564 |
|
1565 return TRUE; |
|
1566 } |
|
1567 |
|
1568 /** |
|
1569 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1570 * @adapter: board private structure |
|
1571 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1572 * |
|
1573 * Return 0 on success, negative on failure |
|
1574 **/ |
|
1575 |
|
1576 static int |
|
1577 e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1578 struct e1000_tx_ring *txdr) |
|
1579 { |
|
1580 struct pci_dev *pdev = adapter->pdev; |
|
1581 int size; |
|
1582 |
|
1583 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1584 txdr->buffer_info = vmalloc(size); |
|
1585 if (!txdr->buffer_info) { |
|
1586 DPRINTK(PROBE, ERR, |
|
1587 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1588 return -ENOMEM; |
|
1589 } |
|
1590 memset(txdr->buffer_info, 0, size); |
|
1591 |
|
1592 /* round up to nearest 4K */ |
|
1593 |
|
1594 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1595 txdr->size = ALIGN(txdr->size, 4096); |
|
1596 |
|
1597 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1598 if (!txdr->desc) { |
|
1599 setup_tx_desc_die: |
|
1600 vfree(txdr->buffer_info); |
|
1601 DPRINTK(PROBE, ERR, |
|
1602 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1603 return -ENOMEM; |
|
1604 } |
|
1605 |
|
1606 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1607 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1608 void *olddesc = txdr->desc; |
|
1609 dma_addr_t olddma = txdr->dma; |
|
1610 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
|
1611 "at %p\n", txdr->size, txdr->desc); |
|
1612 /* Try again, without freeing the previous */ |
|
1613 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1614 /* Failed allocation, critical failure */ |
|
1615 if (!txdr->desc) { |
|
1616 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1617 goto setup_tx_desc_die; |
|
1618 } |
|
1619 |
|
1620 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1621 /* give up */ |
|
1622 pci_free_consistent(pdev, txdr->size, txdr->desc, |
|
1623 txdr->dma); |
|
1624 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1625 DPRINTK(PROBE, ERR, |
|
1626 "Unable to allocate aligned memory " |
|
1627 "for the transmit descriptor ring\n"); |
|
1628 vfree(txdr->buffer_info); |
|
1629 return -ENOMEM; |
|
1630 } else { |
|
1631 /* Free old allocation, new allocation was successful */ |
|
1632 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1633 } |
|
1634 } |
|
1635 memset(txdr->desc, 0, txdr->size); |
|
1636 |
|
1637 txdr->next_to_use = 0; |
|
1638 txdr->next_to_clean = 0; |
|
1639 spin_lock_init(&txdr->tx_lock); |
|
1640 |
|
1641 return 0; |
|
1642 } |
|
1643 |
|
1644 /** |
|
1645 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1646 * (Descriptors) for all queues |
|
1647 * @adapter: board private structure |
|
1648 * |
|
1649 * Return 0 on success, negative on failure |
|
1650 **/ |
|
1651 |
|
1652 int |
|
1653 e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1654 { |
|
1655 int i, err = 0; |
|
1656 |
|
1657 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1658 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1659 if (err) { |
|
1660 DPRINTK(PROBE, ERR, |
|
1661 "Allocation for Tx Queue %u failed\n", i); |
|
1662 for (i-- ; i >= 0; i--) |
|
1663 e1000_free_tx_resources(adapter, |
|
1664 &adapter->tx_ring[i]); |
|
1665 break; |
|
1666 } |
|
1667 } |
|
1668 |
|
1669 return err; |
|
1670 } |
|
1671 |
|
1672 /** |
|
1673 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1674 * @adapter: board private structure |
|
1675 * |
|
1676 * Configure the Tx unit of the MAC after a reset. |
|
1677 **/ |
|
1678 |
|
1679 static void |
|
1680 e1000_configure_tx(struct e1000_adapter *adapter) |
|
1681 { |
|
1682 uint64_t tdba; |
|
1683 struct e1000_hw *hw = &adapter->hw; |
|
1684 uint32_t tdlen, tctl, tipg, tarc; |
|
1685 uint32_t ipgr1, ipgr2; |
|
1686 |
|
1687 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1688 |
|
1689 switch (adapter->num_tx_queues) { |
|
1690 case 1: |
|
1691 default: |
|
1692 tdba = adapter->tx_ring[0].dma; |
|
1693 tdlen = adapter->tx_ring[0].count * |
|
1694 sizeof(struct e1000_tx_desc); |
|
1695 E1000_WRITE_REG(hw, TDLEN, tdlen); |
|
1696 E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); |
|
1697 E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1698 E1000_WRITE_REG(hw, TDT, 0); |
|
1699 E1000_WRITE_REG(hw, TDH, 0); |
|
1700 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1701 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1702 break; |
|
1703 } |
|
1704 |
|
1705 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1706 if (adapter->hw.mac_type <= e1000_82547_rev_2 && |
|
1707 (hw->media_type == e1000_media_type_fiber || |
|
1708 hw->media_type == e1000_media_type_internal_serdes)) |
|
1709 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1710 else |
|
1711 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1712 |
|
1713 switch (hw->mac_type) { |
|
1714 case e1000_82542_rev2_0: |
|
1715 case e1000_82542_rev2_1: |
|
1716 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1717 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1718 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1719 break; |
|
1720 case e1000_80003es2lan: |
|
1721 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1722 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; |
|
1723 break; |
|
1724 default: |
|
1725 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1726 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1727 break; |
|
1728 } |
|
1729 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1730 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1731 E1000_WRITE_REG(hw, TIPG, tipg); |
|
1732 |
|
1733 /* Set the Tx Interrupt Delay register */ |
|
1734 |
|
1735 E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
|
1736 if (hw->mac_type >= e1000_82540) |
|
1737 E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); |
|
1738 |
|
1739 /* Program the Transmit Control Register */ |
|
1740 |
|
1741 tctl = E1000_READ_REG(hw, TCTL); |
|
1742 tctl &= ~E1000_TCTL_CT; |
|
1743 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1744 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1745 |
|
1746 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
|
1747 tarc = E1000_READ_REG(hw, TARC0); |
|
1748 /* set the speed mode bit, we'll clear it if we're not at |
|
1749 * gigabit link later */ |
|
1750 tarc |= (1 << 21); |
|
1751 E1000_WRITE_REG(hw, TARC0, tarc); |
|
1752 } else if (hw->mac_type == e1000_80003es2lan) { |
|
1753 tarc = E1000_READ_REG(hw, TARC0); |
|
1754 tarc |= 1; |
|
1755 E1000_WRITE_REG(hw, TARC0, tarc); |
|
1756 tarc = E1000_READ_REG(hw, TARC1); |
|
1757 tarc |= 1; |
|
1758 E1000_WRITE_REG(hw, TARC1, tarc); |
|
1759 } |
|
1760 |
|
1761 e1000_config_collision_dist(hw); |
|
1762 |
|
1763 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1764 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1765 |
|
1766 /* only set IDE if we are delaying interrupts using the timers */ |
|
1767 if (adapter->tx_int_delay) |
|
1768 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1769 |
|
1770 if (hw->mac_type < e1000_82543) |
|
1771 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1772 else |
|
1773 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1774 |
|
1775 /* Cache if we're 82544 running in PCI-X because we'll |
|
1776 * need this to apply a workaround later in the send path. */ |
|
1777 if (hw->mac_type == e1000_82544 && |
|
1778 hw->bus_type == e1000_bus_type_pcix) |
|
1779 adapter->pcix_82544 = 1; |
|
1780 |
|
1781 E1000_WRITE_REG(hw, TCTL, tctl); |
|
1782 |
|
1783 } |
|
1784 |
|
1785 /** |
|
1786 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1787 * @adapter: board private structure |
|
1788 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1789 * |
|
1790 * Returns 0 on success, negative on failure |
|
1791 **/ |
|
1792 |
|
1793 static int |
|
1794 e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1795 struct e1000_rx_ring *rxdr) |
|
1796 { |
|
1797 struct pci_dev *pdev = adapter->pdev; |
|
1798 int size, desc_len; |
|
1799 |
|
1800 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1801 rxdr->buffer_info = vmalloc(size); |
|
1802 if (!rxdr->buffer_info) { |
|
1803 DPRINTK(PROBE, ERR, |
|
1804 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1805 return -ENOMEM; |
|
1806 } |
|
1807 memset(rxdr->buffer_info, 0, size); |
|
1808 |
|
1809 rxdr->ps_page = kcalloc(rxdr->count, sizeof(struct e1000_ps_page), |
|
1810 GFP_KERNEL); |
|
1811 if (!rxdr->ps_page) { |
|
1812 vfree(rxdr->buffer_info); |
|
1813 DPRINTK(PROBE, ERR, |
|
1814 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1815 return -ENOMEM; |
|
1816 } |
|
1817 |
|
1818 rxdr->ps_page_dma = kcalloc(rxdr->count, |
|
1819 sizeof(struct e1000_ps_page_dma), |
|
1820 GFP_KERNEL); |
|
1821 if (!rxdr->ps_page_dma) { |
|
1822 vfree(rxdr->buffer_info); |
|
1823 kfree(rxdr->ps_page); |
|
1824 DPRINTK(PROBE, ERR, |
|
1825 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1826 return -ENOMEM; |
|
1827 } |
|
1828 |
|
1829 if (adapter->hw.mac_type <= e1000_82547_rev_2) |
|
1830 desc_len = sizeof(struct e1000_rx_desc); |
|
1831 else |
|
1832 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
1833 |
|
1834 /* Round up to nearest 4K */ |
|
1835 |
|
1836 rxdr->size = rxdr->count * desc_len; |
|
1837 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1838 |
|
1839 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1840 |
|
1841 if (!rxdr->desc) { |
|
1842 DPRINTK(PROBE, ERR, |
|
1843 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1844 setup_rx_desc_die: |
|
1845 vfree(rxdr->buffer_info); |
|
1846 kfree(rxdr->ps_page); |
|
1847 kfree(rxdr->ps_page_dma); |
|
1848 return -ENOMEM; |
|
1849 } |
|
1850 |
|
1851 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1852 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1853 void *olddesc = rxdr->desc; |
|
1854 dma_addr_t olddma = rxdr->dma; |
|
1855 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
|
1856 "at %p\n", rxdr->size, rxdr->desc); |
|
1857 /* Try again, without freeing the previous */ |
|
1858 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1859 /* Failed allocation, critical failure */ |
|
1860 if (!rxdr->desc) { |
|
1861 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1862 DPRINTK(PROBE, ERR, |
|
1863 "Unable to allocate memory " |
|
1864 "for the receive descriptor ring\n"); |
|
1865 goto setup_rx_desc_die; |
|
1866 } |
|
1867 |
|
1868 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1869 /* give up */ |
|
1870 pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
|
1871 rxdr->dma); |
|
1872 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1873 DPRINTK(PROBE, ERR, |
|
1874 "Unable to allocate aligned memory " |
|
1875 "for the receive descriptor ring\n"); |
|
1876 goto setup_rx_desc_die; |
|
1877 } else { |
|
1878 /* Free old allocation, new allocation was successful */ |
|
1879 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1880 } |
|
1881 } |
|
1882 memset(rxdr->desc, 0, rxdr->size); |
|
1883 |
|
1884 rxdr->next_to_clean = 0; |
|
1885 rxdr->next_to_use = 0; |
|
1886 |
|
1887 return 0; |
|
1888 } |
|
1889 |
|
1890 /** |
|
1891 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1892 * (Descriptors) for all queues |
|
1893 * @adapter: board private structure |
|
1894 * |
|
1895 * Return 0 on success, negative on failure |
|
1896 **/ |
|
1897 |
|
1898 int |
|
1899 e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1900 { |
|
1901 int i, err = 0; |
|
1902 |
|
1903 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1904 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1905 if (err) { |
|
1906 DPRINTK(PROBE, ERR, |
|
1907 "Allocation for Rx Queue %u failed\n", i); |
|
1908 for (i-- ; i >= 0; i--) |
|
1909 e1000_free_rx_resources(adapter, |
|
1910 &adapter->rx_ring[i]); |
|
1911 break; |
|
1912 } |
|
1913 } |
|
1914 |
|
1915 return err; |
|
1916 } |
|
1917 |
|
1918 /** |
|
1919 * e1000_setup_rctl - configure the receive control registers |
|
1920 * @adapter: Board private structure |
|
1921 **/ |
|
1922 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
|
1923 (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
|
1924 static void |
|
1925 e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1926 { |
|
1927 uint32_t rctl, rfctl; |
|
1928 uint32_t psrctl = 0; |
|
1929 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
|
1930 uint32_t pages = 0; |
|
1931 #endif |
|
1932 |
|
1933 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
1934 |
|
1935 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1936 |
|
1937 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1938 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1939 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1940 |
|
1941 if (adapter->hw.tbi_compatibility_on == 1) |
|
1942 rctl |= E1000_RCTL_SBP; |
|
1943 else |
|
1944 rctl &= ~E1000_RCTL_SBP; |
|
1945 |
|
1946 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1947 rctl &= ~E1000_RCTL_LPE; |
|
1948 else |
|
1949 rctl |= E1000_RCTL_LPE; |
|
1950 |
|
1951 /* Setup buffer sizes */ |
|
1952 rctl &= ~E1000_RCTL_SZ_4096; |
|
1953 rctl |= E1000_RCTL_BSEX; |
|
1954 switch (adapter->rx_buffer_len) { |
|
1955 case E1000_RXBUFFER_256: |
|
1956 rctl |= E1000_RCTL_SZ_256; |
|
1957 rctl &= ~E1000_RCTL_BSEX; |
|
1958 break; |
|
1959 case E1000_RXBUFFER_512: |
|
1960 rctl |= E1000_RCTL_SZ_512; |
|
1961 rctl &= ~E1000_RCTL_BSEX; |
|
1962 break; |
|
1963 case E1000_RXBUFFER_1024: |
|
1964 rctl |= E1000_RCTL_SZ_1024; |
|
1965 rctl &= ~E1000_RCTL_BSEX; |
|
1966 break; |
|
1967 case E1000_RXBUFFER_2048: |
|
1968 default: |
|
1969 rctl |= E1000_RCTL_SZ_2048; |
|
1970 rctl &= ~E1000_RCTL_BSEX; |
|
1971 break; |
|
1972 case E1000_RXBUFFER_4096: |
|
1973 rctl |= E1000_RCTL_SZ_4096; |
|
1974 break; |
|
1975 case E1000_RXBUFFER_8192: |
|
1976 rctl |= E1000_RCTL_SZ_8192; |
|
1977 break; |
|
1978 case E1000_RXBUFFER_16384: |
|
1979 rctl |= E1000_RCTL_SZ_16384; |
|
1980 break; |
|
1981 } |
|
1982 |
|
1983 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
|
1984 /* 82571 and greater support packet-split where the protocol |
|
1985 * header is placed in skb->data and the packet data is |
|
1986 * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
|
1987 * In the case of a non-split, skb->data is linearly filled, |
|
1988 * followed by the page buffers. Therefore, skb->data is |
|
1989 * sized to hold the largest protocol header. |
|
1990 */ |
|
1991 /* allocations using alloc_page take too long for regular MTU |
|
1992 * so only enable packet split for jumbo frames */ |
|
1993 pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
|
1994 if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) && |
|
1995 PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE)) |
|
1996 adapter->rx_ps_pages = pages; |
|
1997 else |
|
1998 adapter->rx_ps_pages = 0; |
|
1999 #endif |
|
2000 if (adapter->rx_ps_pages) { |
|
2001 /* Configure extra packet-split registers */ |
|
2002 rfctl = E1000_READ_REG(&adapter->hw, RFCTL); |
|
2003 rfctl |= E1000_RFCTL_EXTEN; |
|
2004 /* disable packet split support for IPv6 extension headers, |
|
2005 * because some malformed IPv6 headers can hang the RX */ |
|
2006 rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
|
2007 E1000_RFCTL_NEW_IPV6_EXT_DIS); |
|
2008 |
|
2009 E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); |
|
2010 |
|
2011 rctl |= E1000_RCTL_DTYP_PS; |
|
2012 |
|
2013 psrctl |= adapter->rx_ps_bsize0 >> |
|
2014 E1000_PSRCTL_BSIZE0_SHIFT; |
|
2015 |
|
2016 switch (adapter->rx_ps_pages) { |
|
2017 case 3: |
|
2018 psrctl |= PAGE_SIZE << |
|
2019 E1000_PSRCTL_BSIZE3_SHIFT; |
|
2020 case 2: |
|
2021 psrctl |= PAGE_SIZE << |
|
2022 E1000_PSRCTL_BSIZE2_SHIFT; |
|
2023 case 1: |
|
2024 psrctl |= PAGE_SIZE >> |
|
2025 E1000_PSRCTL_BSIZE1_SHIFT; |
|
2026 break; |
|
2027 } |
|
2028 |
|
2029 E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); |
|
2030 } |
|
2031 |
|
2032 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
2033 } |
|
2034 |
|
2035 /** |
|
2036 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
2037 * @adapter: board private structure |
|
2038 * |
|
2039 * Configure the Rx unit of the MAC after a reset. |
|
2040 **/ |
|
2041 |
|
2042 static void |
|
2043 e1000_configure_rx(struct e1000_adapter *adapter) |
|
2044 { |
|
2045 uint64_t rdba; |
|
2046 struct e1000_hw *hw = &adapter->hw; |
|
2047 uint32_t rdlen, rctl, rxcsum, ctrl_ext; |
|
2048 |
|
2049 if (adapter->rx_ps_pages) { |
|
2050 /* this is a 32 byte descriptor */ |
|
2051 rdlen = adapter->rx_ring[0].count * |
|
2052 sizeof(union e1000_rx_desc_packet_split); |
|
2053 adapter->clean_rx = e1000_clean_rx_irq_ps; |
|
2054 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; |
|
2055 } else { |
|
2056 rdlen = adapter->rx_ring[0].count * |
|
2057 sizeof(struct e1000_rx_desc); |
|
2058 adapter->clean_rx = e1000_clean_rx_irq; |
|
2059 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
2060 } |
|
2061 |
|
2062 /* disable receives while setting up the descriptors */ |
|
2063 rctl = E1000_READ_REG(hw, RCTL); |
|
2064 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); |
|
2065 |
|
2066 /* set the Receive Delay Timer Register */ |
|
2067 E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
|
2068 |
|
2069 if (hw->mac_type >= e1000_82540) { |
|
2070 E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); |
|
2071 if (adapter->itr_setting != 0) |
|
2072 E1000_WRITE_REG(hw, ITR, |
|
2073 1000000000 / (adapter->itr * 256)); |
|
2074 } |
|
2075 |
|
2076 if (hw->mac_type >= e1000_82571) { |
|
2077 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
|
2078 /* Reset delay timers after every interrupt */ |
|
2079 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
|
2080 #ifdef CONFIG_E1000_NAPI |
|
2081 /* Auto-Mask interrupts upon ICR access */ |
|
2082 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
2083 E1000_WRITE_REG(hw, IAM, 0xffffffff); |
|
2084 #endif |
|
2085 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
|
2086 E1000_WRITE_FLUSH(hw); |
|
2087 } |
|
2088 |
|
2089 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
2090 * the Base and Length of the Rx Descriptor Ring */ |
|
2091 switch (adapter->num_rx_queues) { |
|
2092 case 1: |
|
2093 default: |
|
2094 rdba = adapter->rx_ring[0].dma; |
|
2095 E1000_WRITE_REG(hw, RDLEN, rdlen); |
|
2096 E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); |
|
2097 E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
2098 E1000_WRITE_REG(hw, RDT, 0); |
|
2099 E1000_WRITE_REG(hw, RDH, 0); |
|
2100 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
2101 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
2102 break; |
|
2103 } |
|
2104 |
|
2105 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
2106 if (hw->mac_type >= e1000_82543) { |
|
2107 rxcsum = E1000_READ_REG(hw, RXCSUM); |
|
2108 if (adapter->rx_csum == TRUE) { |
|
2109 rxcsum |= E1000_RXCSUM_TUOFL; |
|
2110 |
|
2111 /* Enable 82571 IPv4 payload checksum for UDP fragments |
|
2112 * Must be used in conjunction with packet-split. */ |
|
2113 if ((hw->mac_type >= e1000_82571) && |
|
2114 (adapter->rx_ps_pages)) { |
|
2115 rxcsum |= E1000_RXCSUM_IPPCSE; |
|
2116 } |
|
2117 } else { |
|
2118 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
2119 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
2120 } |
|
2121 E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
|
2122 } |
|
2123 |
|
2124 /* enable early receives on 82573, only takes effect if using > 2048 |
|
2125 * byte total frame size. for example only for jumbo frames */ |
|
2126 #define E1000_ERT_2048 0x100 |
|
2127 if (hw->mac_type == e1000_82573) |
|
2128 E1000_WRITE_REG(hw, ERT, E1000_ERT_2048); |
|
2129 |
|
2130 /* Enable Receives */ |
|
2131 E1000_WRITE_REG(hw, RCTL, rctl); |
|
2132 } |
|
2133 |
|
2134 /** |
|
2135 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
2136 * @adapter: board private structure |
|
2137 * @tx_ring: Tx descriptor ring for a specific queue |
|
2138 * |
|
2139 * Free all transmit software resources |
|
2140 **/ |
|
2141 |
|
2142 static void |
|
2143 e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
2144 struct e1000_tx_ring *tx_ring) |
|
2145 { |
|
2146 struct pci_dev *pdev = adapter->pdev; |
|
2147 |
|
2148 e1000_clean_tx_ring(adapter, tx_ring); |
|
2149 |
|
2150 vfree(tx_ring->buffer_info); |
|
2151 tx_ring->buffer_info = NULL; |
|
2152 |
|
2153 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
|
2154 |
|
2155 tx_ring->desc = NULL; |
|
2156 } |
|
2157 |
|
2158 /** |
|
2159 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
2160 * @adapter: board private structure |
|
2161 * |
|
2162 * Free all transmit software resources |
|
2163 **/ |
|
2164 |
|
2165 void |
|
2166 e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
2167 { |
|
2168 int i; |
|
2169 |
|
2170 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2171 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
2172 } |
|
2173 |
|
2174 static void |
|
2175 e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
2176 struct e1000_buffer *buffer_info) |
|
2177 { |
|
2178 if (adapter->ecdev) |
|
2179 return; |
|
2180 |
|
2181 if (buffer_info->dma) { |
|
2182 pci_unmap_page(adapter->pdev, |
|
2183 buffer_info->dma, |
|
2184 buffer_info->length, |
|
2185 PCI_DMA_TODEVICE); |
|
2186 buffer_info->dma = 0; |
|
2187 } |
|
2188 if (buffer_info->skb) { |
|
2189 dev_kfree_skb_any(buffer_info->skb); |
|
2190 buffer_info->skb = NULL; |
|
2191 } |
|
2192 /* buffer_info must be completely set up in the transmit path */ |
|
2193 } |
|
2194 |
|
2195 /** |
|
2196 * e1000_clean_tx_ring - Free Tx Buffers |
|
2197 * @adapter: board private structure |
|
2198 * @tx_ring: ring to be cleaned |
|
2199 **/ |
|
2200 |
|
2201 static void |
|
2202 e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
2203 struct e1000_tx_ring *tx_ring) |
|
2204 { |
|
2205 struct e1000_buffer *buffer_info; |
|
2206 unsigned long size; |
|
2207 unsigned int i; |
|
2208 |
|
2209 /* Free all the Tx ring sk_buffs */ |
|
2210 |
|
2211 for (i = 0; i < tx_ring->count; i++) { |
|
2212 buffer_info = &tx_ring->buffer_info[i]; |
|
2213 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
2214 } |
|
2215 |
|
2216 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2217 memset(tx_ring->buffer_info, 0, size); |
|
2218 |
|
2219 /* Zero out the descriptor ring */ |
|
2220 |
|
2221 memset(tx_ring->desc, 0, tx_ring->size); |
|
2222 |
|
2223 tx_ring->next_to_use = 0; |
|
2224 tx_ring->next_to_clean = 0; |
|
2225 tx_ring->last_tx_tso = 0; |
|
2226 |
|
2227 writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
|
2228 writel(0, adapter->hw.hw_addr + tx_ring->tdt); |
|
2229 } |
|
2230 |
|
2231 /** |
|
2232 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
2233 * @adapter: board private structure |
|
2234 **/ |
|
2235 |
|
2236 static void |
|
2237 e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
2238 { |
|
2239 int i; |
|
2240 |
|
2241 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2242 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
2243 } |
|
2244 |
|
2245 /** |
|
2246 * e1000_free_rx_resources - Free Rx Resources |
|
2247 * @adapter: board private structure |
|
2248 * @rx_ring: ring to clean the resources from |
|
2249 * |
|
2250 * Free all receive software resources |
|
2251 **/ |
|
2252 |
|
2253 static void |
|
2254 e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
2255 struct e1000_rx_ring *rx_ring) |
|
2256 { |
|
2257 struct pci_dev *pdev = adapter->pdev; |
|
2258 |
|
2259 e1000_clean_rx_ring(adapter, rx_ring); |
|
2260 |
|
2261 vfree(rx_ring->buffer_info); |
|
2262 rx_ring->buffer_info = NULL; |
|
2263 kfree(rx_ring->ps_page); |
|
2264 rx_ring->ps_page = NULL; |
|
2265 kfree(rx_ring->ps_page_dma); |
|
2266 rx_ring->ps_page_dma = NULL; |
|
2267 |
|
2268 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
|
2269 |
|
2270 rx_ring->desc = NULL; |
|
2271 } |
|
2272 |
|
2273 /** |
|
2274 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
2275 * @adapter: board private structure |
|
2276 * |
|
2277 * Free all receive software resources |
|
2278 **/ |
|
2279 |
|
2280 void |
|
2281 e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
2282 { |
|
2283 int i; |
|
2284 |
|
2285 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2286 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
2287 } |
|
2288 |
|
2289 /** |
|
2290 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
2291 * @adapter: board private structure |
|
2292 * @rx_ring: ring to free buffers from |
|
2293 **/ |
|
2294 |
|
2295 static void |
|
2296 e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
2297 struct e1000_rx_ring *rx_ring) |
|
2298 { |
|
2299 struct e1000_buffer *buffer_info; |
|
2300 struct e1000_ps_page *ps_page; |
|
2301 struct e1000_ps_page_dma *ps_page_dma; |
|
2302 struct pci_dev *pdev = adapter->pdev; |
|
2303 unsigned long size; |
|
2304 unsigned int i, j; |
|
2305 |
|
2306 /* Free all the Rx ring sk_buffs */ |
|
2307 for (i = 0; i < rx_ring->count; i++) { |
|
2308 buffer_info = &rx_ring->buffer_info[i]; |
|
2309 if (buffer_info->skb) { |
|
2310 pci_unmap_single(pdev, |
|
2311 buffer_info->dma, |
|
2312 buffer_info->length, |
|
2313 PCI_DMA_FROMDEVICE); |
|
2314 |
|
2315 dev_kfree_skb(buffer_info->skb); |
|
2316 buffer_info->skb = NULL; |
|
2317 } |
|
2318 ps_page = &rx_ring->ps_page[i]; |
|
2319 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
2320 for (j = 0; j < adapter->rx_ps_pages; j++) { |
|
2321 if (!ps_page->ps_page[j]) break; |
|
2322 pci_unmap_page(pdev, |
|
2323 ps_page_dma->ps_page_dma[j], |
|
2324 PAGE_SIZE, PCI_DMA_FROMDEVICE); |
|
2325 ps_page_dma->ps_page_dma[j] = 0; |
|
2326 put_page(ps_page->ps_page[j]); |
|
2327 ps_page->ps_page[j] = NULL; |
|
2328 } |
|
2329 } |
|
2330 |
|
2331 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2332 memset(rx_ring->buffer_info, 0, size); |
|
2333 size = sizeof(struct e1000_ps_page) * rx_ring->count; |
|
2334 memset(rx_ring->ps_page, 0, size); |
|
2335 size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; |
|
2336 memset(rx_ring->ps_page_dma, 0, size); |
|
2337 |
|
2338 /* Zero out the descriptor ring */ |
|
2339 |
|
2340 memset(rx_ring->desc, 0, rx_ring->size); |
|
2341 |
|
2342 rx_ring->next_to_clean = 0; |
|
2343 rx_ring->next_to_use = 0; |
|
2344 |
|
2345 writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
|
2346 writel(0, adapter->hw.hw_addr + rx_ring->rdt); |
|
2347 } |
|
2348 |
|
2349 /** |
|
2350 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
2351 * @adapter: board private structure |
|
2352 **/ |
|
2353 |
|
2354 static void |
|
2355 e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
2356 { |
|
2357 int i; |
|
2358 |
|
2359 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2360 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
2361 } |
|
2362 |
|
2363 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2364 * and memory write and invalidate disabled for certain operations |
|
2365 */ |
|
2366 static void |
|
2367 e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2368 { |
|
2369 struct net_device *netdev = adapter->netdev; |
|
2370 uint32_t rctl; |
|
2371 |
|
2372 e1000_pci_clear_mwi(&adapter->hw); |
|
2373 |
|
2374 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
2375 rctl |= E1000_RCTL_RST; |
|
2376 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
2377 E1000_WRITE_FLUSH(&adapter->hw); |
|
2378 mdelay(5); |
|
2379 |
|
2380 if (!adapter->ecdev && netif_running(netdev)) |
|
2381 e1000_clean_all_rx_rings(adapter); |
|
2382 } |
|
2383 |
|
2384 static void |
|
2385 e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2386 { |
|
2387 struct net_device *netdev = adapter->netdev; |
|
2388 uint32_t rctl; |
|
2389 |
|
2390 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
2391 rctl &= ~E1000_RCTL_RST; |
|
2392 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
2393 E1000_WRITE_FLUSH(&adapter->hw); |
|
2394 mdelay(5); |
|
2395 |
|
2396 if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2397 e1000_pci_set_mwi(&adapter->hw); |
|
2398 |
|
2399 if (!adapter->netdev && netif_running(netdev)) { |
|
2400 /* No need to loop, because 82542 supports only 1 queue */ |
|
2401 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2402 e1000_configure_rx(adapter); |
|
2403 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2404 } |
|
2405 } |
|
2406 |
|
2407 /** |
|
2408 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2409 * @netdev: network interface device structure |
|
2410 * @p: pointer to an address structure |
|
2411 * |
|
2412 * Returns 0 on success, negative on failure |
|
2413 **/ |
|
2414 |
|
2415 static int |
|
2416 e1000_set_mac(struct net_device *netdev, void *p) |
|
2417 { |
|
2418 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2419 struct sockaddr *addr = p; |
|
2420 |
|
2421 if (!is_valid_ether_addr(addr->sa_data)) |
|
2422 return -EADDRNOTAVAIL; |
|
2423 |
|
2424 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2425 |
|
2426 if (adapter->hw.mac_type == e1000_82542_rev2_0) |
|
2427 e1000_enter_82542_rst(adapter); |
|
2428 |
|
2429 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2430 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); |
|
2431 |
|
2432 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); |
|
2433 |
|
2434 /* With 82571 controllers, LAA may be overwritten (with the default) |
|
2435 * due to controller reset from the other port. */ |
|
2436 if (adapter->hw.mac_type == e1000_82571) { |
|
2437 /* activate the work around */ |
|
2438 adapter->hw.laa_is_present = 1; |
|
2439 |
|
2440 /* Hold a copy of the LAA in RAR[14] This is done so that |
|
2441 * between the time RAR[0] gets clobbered and the time it |
|
2442 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
2443 * of the RARs and no incoming packets directed to this port |
|
2444 * are dropped. Eventaully the LAA will be in RAR[0] and |
|
2445 * RAR[14] */ |
|
2446 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
|
2447 E1000_RAR_ENTRIES - 1); |
|
2448 } |
|
2449 |
|
2450 if (adapter->hw.mac_type == e1000_82542_rev2_0) |
|
2451 e1000_leave_82542_rst(adapter); |
|
2452 |
|
2453 return 0; |
|
2454 } |
|
2455 |
|
2456 /** |
|
2457 * e1000_set_multi - Multicast and Promiscuous mode set |
|
2458 * @netdev: network interface device structure |
|
2459 * |
|
2460 * The set_multi entry point is called whenever the multicast address |
|
2461 * list or the network interface flags are updated. This routine is |
|
2462 * responsible for configuring the hardware for proper multicast, |
|
2463 * promiscuous mode, and all-multi behavior. |
|
2464 **/ |
|
2465 |
|
2466 static void |
|
2467 e1000_set_multi(struct net_device *netdev) |
|
2468 { |
|
2469 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2470 struct e1000_hw *hw = &adapter->hw; |
|
2471 struct dev_mc_list *mc_ptr; |
|
2472 uint32_t rctl; |
|
2473 uint32_t hash_value; |
|
2474 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2475 int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
|
2476 E1000_NUM_MTA_REGISTERS_ICH8LAN : |
|
2477 E1000_NUM_MTA_REGISTERS; |
|
2478 |
|
2479 if (adapter->hw.mac_type == e1000_ich8lan) |
|
2480 rar_entries = E1000_RAR_ENTRIES_ICH8LAN; |
|
2481 |
|
2482 /* reserve RAR[14] for LAA over-write work-around */ |
|
2483 if (adapter->hw.mac_type == e1000_82571) |
|
2484 rar_entries--; |
|
2485 |
|
2486 /* Check for Promiscuous and All Multicast modes */ |
|
2487 |
|
2488 rctl = E1000_READ_REG(hw, RCTL); |
|
2489 |
|
2490 if (netdev->flags & IFF_PROMISC) { |
|
2491 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2492 } else if (netdev->flags & IFF_ALLMULTI) { |
|
2493 rctl |= E1000_RCTL_MPE; |
|
2494 rctl &= ~E1000_RCTL_UPE; |
|
2495 } else { |
|
2496 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2497 } |
|
2498 |
|
2499 E1000_WRITE_REG(hw, RCTL, rctl); |
|
2500 |
|
2501 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2502 |
|
2503 if (hw->mac_type == e1000_82542_rev2_0) |
|
2504 e1000_enter_82542_rst(adapter); |
|
2505 |
|
2506 /* load the first 14 multicast address into the exact filters 1-14 |
|
2507 * RAR 0 is used for the station MAC adddress |
|
2508 * if there are not 14 addresses, go ahead and clear the filters |
|
2509 * -- with 82571 controllers only 0-13 entries are filled here |
|
2510 */ |
|
2511 mc_ptr = netdev->mc_list; |
|
2512 |
|
2513 for (i = 1; i < rar_entries; i++) { |
|
2514 if (mc_ptr) { |
|
2515 e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
|
2516 mc_ptr = mc_ptr->next; |
|
2517 } else { |
|
2518 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2519 E1000_WRITE_FLUSH(hw); |
|
2520 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2521 E1000_WRITE_FLUSH(hw); |
|
2522 } |
|
2523 } |
|
2524 |
|
2525 /* clear the old settings from the multicast hash table */ |
|
2526 |
|
2527 for (i = 0; i < mta_reg_count; i++) { |
|
2528 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
|
2529 E1000_WRITE_FLUSH(hw); |
|
2530 } |
|
2531 |
|
2532 /* load any remaining addresses into the hash table */ |
|
2533 |
|
2534 for (; mc_ptr; mc_ptr = mc_ptr->next) { |
|
2535 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); |
|
2536 e1000_mta_set(hw, hash_value); |
|
2537 } |
|
2538 |
|
2539 if (hw->mac_type == e1000_82542_rev2_0) |
|
2540 e1000_leave_82542_rst(adapter); |
|
2541 } |
|
2542 |
|
2543 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2544 * the phy */ |
|
2545 |
|
2546 static void |
|
2547 e1000_update_phy_info(unsigned long data) |
|
2548 { |
|
2549 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
2550 e1000_phy_get_info(&adapter->hw, &adapter->phy_info); |
|
2551 } |
|
2552 |
|
2553 /** |
|
2554 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2555 * @data: pointer to adapter cast into an unsigned long |
|
2556 **/ |
|
2557 |
|
2558 static void |
|
2559 e1000_82547_tx_fifo_stall(unsigned long data) |
|
2560 { |
|
2561 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
2562 struct net_device *netdev = adapter->netdev; |
|
2563 uint32_t tctl; |
|
2564 |
|
2565 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2566 if ((E1000_READ_REG(&adapter->hw, TDT) == |
|
2567 E1000_READ_REG(&adapter->hw, TDH)) && |
|
2568 (E1000_READ_REG(&adapter->hw, TDFT) == |
|
2569 E1000_READ_REG(&adapter->hw, TDFH)) && |
|
2570 (E1000_READ_REG(&adapter->hw, TDFTS) == |
|
2571 E1000_READ_REG(&adapter->hw, TDFHS))) { |
|
2572 tctl = E1000_READ_REG(&adapter->hw, TCTL); |
|
2573 E1000_WRITE_REG(&adapter->hw, TCTL, |
|
2574 tctl & ~E1000_TCTL_EN); |
|
2575 E1000_WRITE_REG(&adapter->hw, TDFT, |
|
2576 adapter->tx_head_addr); |
|
2577 E1000_WRITE_REG(&adapter->hw, TDFH, |
|
2578 adapter->tx_head_addr); |
|
2579 E1000_WRITE_REG(&adapter->hw, TDFTS, |
|
2580 adapter->tx_head_addr); |
|
2581 E1000_WRITE_REG(&adapter->hw, TDFHS, |
|
2582 adapter->tx_head_addr); |
|
2583 E1000_WRITE_REG(&adapter->hw, TCTL, tctl); |
|
2584 E1000_WRITE_FLUSH(&adapter->hw); |
|
2585 |
|
2586 adapter->tx_fifo_head = 0; |
|
2587 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2588 if (!adapter->ecdev) netif_wake_queue(netdev); |
|
2589 } else { |
|
2590 if (!adapter->ecdev) |
|
2591 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2592 } |
|
2593 } |
|
2594 } |
|
2595 |
|
2596 /** |
|
2597 * e1000_watchdog - Timer Call-back |
|
2598 * @data: pointer to adapter cast into an unsigned long |
|
2599 **/ |
|
2600 static void |
|
2601 e1000_watchdog(unsigned long data) |
|
2602 { |
|
2603 struct e1000_adapter *adapter = (struct e1000_adapter *) data; |
|
2604 struct net_device *netdev = adapter->netdev; |
|
2605 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2606 uint32_t link, tctl; |
|
2607 int32_t ret_val; |
|
2608 |
|
2609 ret_val = e1000_check_for_link(&adapter->hw); |
|
2610 if ((ret_val == E1000_ERR_PHY) && |
|
2611 (adapter->hw.phy_type == e1000_phy_igp_3) && |
|
2612 (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
2613 /* See e1000_kumeran_lock_loss_workaround() */ |
|
2614 DPRINTK(LINK, INFO, |
|
2615 "Gigabit has been disabled, downgrading speed\n"); |
|
2616 } |
|
2617 |
|
2618 if (adapter->hw.mac_type == e1000_82573) { |
|
2619 e1000_enable_tx_pkt_filtering(&adapter->hw); |
|
2620 if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
|
2621 e1000_update_mng_vlan(adapter); |
|
2622 } |
|
2623 |
|
2624 if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
|
2625 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
|
2626 link = !adapter->hw.serdes_link_down; |
|
2627 else |
|
2628 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; |
|
2629 |
|
2630 if (link) { |
|
2631 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
2632 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
2633 uint32_t ctrl; |
|
2634 boolean_t txb2b = 1; |
|
2635 e1000_get_speed_and_duplex(&adapter->hw, |
|
2636 &adapter->link_speed, |
|
2637 &adapter->link_duplex); |
|
2638 |
|
2639 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
2640 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, " |
|
2641 "Flow Control: %s\n", |
|
2642 adapter->link_speed, |
|
2643 adapter->link_duplex == FULL_DUPLEX ? |
|
2644 "Full Duplex" : "Half Duplex", |
|
2645 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2646 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2647 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2648 E1000_CTRL_TFCE) ? "TX" : "None" ))); |
|
2649 |
|
2650 /* tweak tx_queue_len according to speed/duplex |
|
2651 * and adjust the timeout factor */ |
|
2652 netdev->tx_queue_len = adapter->tx_queue_len; |
|
2653 adapter->tx_timeout_factor = 1; |
|
2654 switch (adapter->link_speed) { |
|
2655 case SPEED_10: |
|
2656 txb2b = 0; |
|
2657 netdev->tx_queue_len = 10; |
|
2658 adapter->tx_timeout_factor = 8; |
|
2659 break; |
|
2660 case SPEED_100: |
|
2661 txb2b = 0; |
|
2662 netdev->tx_queue_len = 100; |
|
2663 /* maybe add some timeout factor ? */ |
|
2664 break; |
|
2665 } |
|
2666 |
|
2667 if ((adapter->hw.mac_type == e1000_82571 || |
|
2668 adapter->hw.mac_type == e1000_82572) && |
|
2669 txb2b == 0) { |
|
2670 uint32_t tarc0; |
|
2671 tarc0 = E1000_READ_REG(&adapter->hw, TARC0); |
|
2672 tarc0 &= ~(1 << 21); |
|
2673 E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); |
|
2674 } |
|
2675 |
|
2676 /* disable TSO for pcie and 10/100 speeds, to avoid |
|
2677 * some hardware issues */ |
|
2678 if (!adapter->tso_force && |
|
2679 adapter->hw.bus_type == e1000_bus_type_pci_express){ |
|
2680 switch (adapter->link_speed) { |
|
2681 case SPEED_10: |
|
2682 case SPEED_100: |
|
2683 DPRINTK(PROBE,INFO, |
|
2684 "10/100 speed: disabling TSO\n"); |
|
2685 netdev->features &= ~NETIF_F_TSO; |
|
2686 netdev->features &= ~NETIF_F_TSO6; |
|
2687 break; |
|
2688 case SPEED_1000: |
|
2689 netdev->features |= NETIF_F_TSO; |
|
2690 netdev->features |= NETIF_F_TSO6; |
|
2691 break; |
|
2692 default: |
|
2693 /* oops */ |
|
2694 break; |
|
2695 } |
|
2696 } |
|
2697 |
|
2698 /* enable transmits in the hardware, need to do this |
|
2699 * after setting TARC0 */ |
|
2700 tctl = E1000_READ_REG(&adapter->hw, TCTL); |
|
2701 tctl |= E1000_TCTL_EN; |
|
2702 E1000_WRITE_REG(&adapter->hw, TCTL, tctl); |
|
2703 |
|
2704 if (adapter->ecdev) { |
|
2705 ecdev_set_link(adapter->ecdev, 1); |
|
2706 } else { |
|
2707 netif_carrier_on(netdev); |
|
2708 netif_wake_queue(netdev); |
|
2709 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2710 } |
|
2711 adapter->smartspeed = 0; |
|
2712 } else { |
|
2713 /* make sure the receive unit is started */ |
|
2714 if (adapter->hw.rx_needs_kicking) { |
|
2715 struct e1000_hw *hw = &adapter->hw; |
|
2716 uint32_t rctl = E1000_READ_REG(hw, RCTL); |
|
2717 E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN); |
|
2718 } |
|
2719 } |
|
2720 } else { |
|
2721 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
2722 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
2723 adapter->link_speed = 0; |
|
2724 adapter->link_duplex = 0; |
|
2725 DPRINTK(LINK, INFO, "NIC Link is Down\n"); |
|
2726 if (adapter->ecdev) { |
|
2727 ecdev_set_link(adapter->ecdev, 0); |
|
2728 } else { |
|
2729 netif_carrier_off(netdev); |
|
2730 netif_stop_queue(netdev); |
|
2731 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2732 } |
|
2733 |
|
2734 /* 80003ES2LAN workaround-- |
|
2735 * For packet buffer work-around on link down event; |
|
2736 * disable receives in the ISR and |
|
2737 * reset device here in the watchdog |
|
2738 */ |
|
2739 if (adapter->hw.mac_type == e1000_80003es2lan) |
|
2740 /* reset device */ |
|
2741 schedule_work(&adapter->reset_task); |
|
2742 } |
|
2743 |
|
2744 e1000_smartspeed(adapter); |
|
2745 } |
|
2746 |
|
2747 e1000_update_stats(adapter); |
|
2748 |
|
2749 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2750 adapter->tpt_old = adapter->stats.tpt; |
|
2751 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2752 adapter->colc_old = adapter->stats.colc; |
|
2753 |
|
2754 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2755 adapter->gorcl_old = adapter->stats.gorcl; |
|
2756 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2757 adapter->gotcl_old = adapter->stats.gotcl; |
|
2758 |
|
2759 e1000_update_adaptive(&adapter->hw); |
|
2760 |
|
2761 if (!adapter->ecdev && !netif_carrier_ok(netdev)) { |
|
2762 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2763 /* We've lost link, so the controller stops DMA, |
|
2764 * but we've got queued Tx work that's never going |
|
2765 * to get done, so reset controller to flush Tx. |
|
2766 * (Do the reset outside of interrupt context). */ |
|
2767 adapter->tx_timeout_count++; |
|
2768 schedule_work(&adapter->reset_task); |
|
2769 } |
|
2770 } |
|
2771 |
|
2772 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2773 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); |
|
2774 |
|
2775 /* Force detection of hung controller every watchdog period */ |
|
2776 if (!adapter->ecdev) adapter->detect_tx_hung = TRUE; |
|
2777 |
|
2778 /* With 82571 controllers, LAA may be overwritten due to controller |
|
2779 * reset from the other port. Set the appropriate LAA in RAR[0] */ |
|
2780 if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) |
|
2781 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); |
|
2782 |
|
2783 /* Reset the timer */ |
|
2784 if (!adapter->ecdev) |
|
2785 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2786 } |
|
2787 |
|
2788 enum latency_range { |
|
2789 lowest_latency = 0, |
|
2790 low_latency = 1, |
|
2791 bulk_latency = 2, |
|
2792 latency_invalid = 255 |
|
2793 }; |
|
2794 |
|
2795 /** |
|
2796 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2797 * Stores a new ITR value based on packets and byte |
|
2798 * counts during the last interrupt. The advantage of per interrupt |
|
2799 * computation is faster updates and more accurate ITR for the current |
|
2800 * traffic pattern. Constants in this function were computed |
|
2801 * based on theoretical maximum wire speed and thresholds were set based |
|
2802 * on testing data as well as attempting to minimize response time |
|
2803 * while increasing bulk throughput. |
|
2804 * this functionality is controlled by the InterruptThrottleRate module |
|
2805 * parameter (see e1000_param.c) |
|
2806 * @adapter: pointer to adapter |
|
2807 * @itr_setting: current adapter->itr |
|
2808 * @packets: the number of packets during this measurement interval |
|
2809 * @bytes: the number of bytes during this measurement interval |
|
2810 **/ |
|
2811 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2812 uint16_t itr_setting, |
|
2813 int packets, |
|
2814 int bytes) |
|
2815 { |
|
2816 unsigned int retval = itr_setting; |
|
2817 struct e1000_hw *hw = &adapter->hw; |
|
2818 |
|
2819 if (unlikely(hw->mac_type < e1000_82540)) |
|
2820 goto update_itr_done; |
|
2821 |
|
2822 if (packets == 0) |
|
2823 goto update_itr_done; |
|
2824 |
|
2825 switch (itr_setting) { |
|
2826 case lowest_latency: |
|
2827 /* jumbo frames get bulk treatment*/ |
|
2828 if (bytes/packets > 8000) |
|
2829 retval = bulk_latency; |
|
2830 else if ((packets < 5) && (bytes > 512)) |
|
2831 retval = low_latency; |
|
2832 break; |
|
2833 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2834 if (bytes > 10000) { |
|
2835 /* jumbo frames need bulk latency setting */ |
|
2836 if (bytes/packets > 8000) |
|
2837 retval = bulk_latency; |
|
2838 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2839 retval = bulk_latency; |
|
2840 else if ((packets > 35)) |
|
2841 retval = lowest_latency; |
|
2842 } else if (bytes/packets > 2000) |
|
2843 retval = bulk_latency; |
|
2844 else if (packets <= 2 && bytes < 512) |
|
2845 retval = lowest_latency; |
|
2846 break; |
|
2847 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2848 if (bytes > 25000) { |
|
2849 if (packets > 35) |
|
2850 retval = low_latency; |
|
2851 } else if (bytes < 6000) { |
|
2852 retval = low_latency; |
|
2853 } |
|
2854 break; |
|
2855 } |
|
2856 |
|
2857 update_itr_done: |
|
2858 return retval; |
|
2859 } |
|
2860 |
|
2861 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2862 { |
|
2863 struct e1000_hw *hw = &adapter->hw; |
|
2864 uint16_t current_itr; |
|
2865 uint32_t new_itr = adapter->itr; |
|
2866 |
|
2867 if (unlikely(hw->mac_type < e1000_82540)) |
|
2868 return; |
|
2869 |
|
2870 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2871 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2872 current_itr = 0; |
|
2873 new_itr = 4000; |
|
2874 goto set_itr_now; |
|
2875 } |
|
2876 |
|
2877 adapter->tx_itr = e1000_update_itr(adapter, |
|
2878 adapter->tx_itr, |
|
2879 adapter->total_tx_packets, |
|
2880 adapter->total_tx_bytes); |
|
2881 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2882 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2883 adapter->tx_itr = low_latency; |
|
2884 |
|
2885 adapter->rx_itr = e1000_update_itr(adapter, |
|
2886 adapter->rx_itr, |
|
2887 adapter->total_rx_packets, |
|
2888 adapter->total_rx_bytes); |
|
2889 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2890 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2891 adapter->rx_itr = low_latency; |
|
2892 |
|
2893 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2894 |
|
2895 switch (current_itr) { |
|
2896 /* counts and packets in update_itr are dependent on these numbers */ |
|
2897 case lowest_latency: |
|
2898 new_itr = 70000; |
|
2899 break; |
|
2900 case low_latency: |
|
2901 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2902 break; |
|
2903 case bulk_latency: |
|
2904 new_itr = 4000; |
|
2905 break; |
|
2906 default: |
|
2907 break; |
|
2908 } |
|
2909 |
|
2910 set_itr_now: |
|
2911 if (new_itr != adapter->itr) { |
|
2912 /* this attempts to bias the interrupt rate towards Bulk |
|
2913 * by adding intermediate steps when interrupt rate is |
|
2914 * increasing */ |
|
2915 new_itr = new_itr > adapter->itr ? |
|
2916 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2917 new_itr; |
|
2918 adapter->itr = new_itr; |
|
2919 E1000_WRITE_REG(hw, ITR, 1000000000 / (new_itr * 256)); |
|
2920 } |
|
2921 |
|
2922 return; |
|
2923 } |
|
2924 |
|
2925 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2926 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2927 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2928 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2929 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2930 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2931 |
|
2932 static int |
|
2933 e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
2934 struct sk_buff *skb) |
|
2935 { |
|
2936 struct e1000_context_desc *context_desc; |
|
2937 struct e1000_buffer *buffer_info; |
|
2938 unsigned int i; |
|
2939 uint32_t cmd_length = 0; |
|
2940 uint16_t ipcse = 0, tucse, mss; |
|
2941 uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
|
2942 int err; |
|
2943 |
|
2944 if (skb_is_gso(skb)) { |
|
2945 if (skb_header_cloned(skb)) { |
|
2946 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2947 if (err) |
|
2948 return err; |
|
2949 } |
|
2950 |
|
2951 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2952 mss = skb_shinfo(skb)->gso_size; |
|
2953 if (skb->protocol == htons(ETH_P_IP)) { |
|
2954 struct iphdr *iph = ip_hdr(skb); |
|
2955 iph->tot_len = 0; |
|
2956 iph->check = 0; |
|
2957 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2958 iph->daddr, 0, |
|
2959 IPPROTO_TCP, |
|
2960 0); |
|
2961 cmd_length = E1000_TXD_CMD_IP; |
|
2962 ipcse = skb_transport_offset(skb) - 1; |
|
2963 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2964 ipv6_hdr(skb)->payload_len = 0; |
|
2965 tcp_hdr(skb)->check = |
|
2966 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2967 &ipv6_hdr(skb)->daddr, |
|
2968 0, IPPROTO_TCP, 0); |
|
2969 ipcse = 0; |
|
2970 } |
|
2971 ipcss = skb_network_offset(skb); |
|
2972 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2973 tucss = skb_transport_offset(skb); |
|
2974 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2975 tucse = 0; |
|
2976 |
|
2977 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2978 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2979 |
|
2980 i = tx_ring->next_to_use; |
|
2981 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2982 buffer_info = &tx_ring->buffer_info[i]; |
|
2983 |
|
2984 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2985 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2986 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2987 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2988 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2989 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2990 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2991 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2992 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2993 |
|
2994 buffer_info->time_stamp = jiffies; |
|
2995 buffer_info->next_to_watch = i; |
|
2996 |
|
2997 if (++i == tx_ring->count) i = 0; |
|
2998 tx_ring->next_to_use = i; |
|
2999 |
|
3000 return TRUE; |
|
3001 } |
|
3002 return FALSE; |
|
3003 } |
|
3004 |
|
3005 static boolean_t |
|
3006 e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
3007 struct sk_buff *skb) |
|
3008 { |
|
3009 struct e1000_context_desc *context_desc; |
|
3010 struct e1000_buffer *buffer_info; |
|
3011 unsigned int i; |
|
3012 uint8_t css; |
|
3013 |
|
3014 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
|
3015 css = skb_transport_offset(skb); |
|
3016 |
|
3017 i = tx_ring->next_to_use; |
|
3018 buffer_info = &tx_ring->buffer_info[i]; |
|
3019 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
3020 |
|
3021 context_desc->lower_setup.ip_config = 0; |
|
3022 context_desc->upper_setup.tcp_fields.tucss = css; |
|
3023 context_desc->upper_setup.tcp_fields.tucso = |
|
3024 css + skb->csum_offset; |
|
3025 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
3026 context_desc->tcp_seg_setup.data = 0; |
|
3027 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); |
|
3028 |
|
3029 buffer_info->time_stamp = jiffies; |
|
3030 buffer_info->next_to_watch = i; |
|
3031 |
|
3032 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3033 tx_ring->next_to_use = i; |
|
3034 |
|
3035 return TRUE; |
|
3036 } |
|
3037 |
|
3038 return FALSE; |
|
3039 } |
|
3040 |
|
3041 #define E1000_MAX_TXD_PWR 12 |
|
3042 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
3043 |
|
3044 static int |
|
3045 e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
3046 struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, |
|
3047 unsigned int nr_frags, unsigned int mss) |
|
3048 { |
|
3049 struct e1000_buffer *buffer_info; |
|
3050 unsigned int len = skb->len; |
|
3051 unsigned int offset = 0, size, count = 0, i; |
|
3052 unsigned int f; |
|
3053 len -= skb->data_len; |
|
3054 |
|
3055 i = tx_ring->next_to_use; |
|
3056 |
|
3057 while (len) { |
|
3058 buffer_info = &tx_ring->buffer_info[i]; |
|
3059 size = min(len, max_per_txd); |
|
3060 /* Workaround for Controller erratum -- |
|
3061 * descriptor for non-tso packet in a linear SKB that follows a |
|
3062 * tso gets written back prematurely before the data is fully |
|
3063 * DMA'd to the controller */ |
|
3064 if (!skb->data_len && tx_ring->last_tx_tso && |
|
3065 !skb_is_gso(skb)) { |
|
3066 tx_ring->last_tx_tso = 0; |
|
3067 size -= 4; |
|
3068 } |
|
3069 |
|
3070 /* Workaround for premature desc write-backs |
|
3071 * in TSO mode. Append 4-byte sentinel desc */ |
|
3072 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
3073 size -= 4; |
|
3074 /* work-around for errata 10 and it applies |
|
3075 * to all controllers in PCI-X mode |
|
3076 * The fix is to make sure that the first descriptor of a |
|
3077 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
3078 */ |
|
3079 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
|
3080 (size > 2015) && count == 0)) |
|
3081 size = 2015; |
|
3082 |
|
3083 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
3084 * terminating buffers within evenly-aligned dwords. */ |
|
3085 if (unlikely(adapter->pcix_82544 && |
|
3086 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
3087 size > 4)) |
|
3088 size -= 4; |
|
3089 |
|
3090 buffer_info->length = size; |
|
3091 buffer_info->dma = |
|
3092 pci_map_single(adapter->pdev, |
|
3093 skb->data + offset, |
|
3094 size, |
|
3095 PCI_DMA_TODEVICE); |
|
3096 buffer_info->time_stamp = jiffies; |
|
3097 buffer_info->next_to_watch = i; |
|
3098 |
|
3099 len -= size; |
|
3100 offset += size; |
|
3101 count++; |
|
3102 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3103 } |
|
3104 |
|
3105 for (f = 0; f < nr_frags; f++) { |
|
3106 struct skb_frag_struct *frag; |
|
3107 |
|
3108 frag = &skb_shinfo(skb)->frags[f]; |
|
3109 len = frag->size; |
|
3110 offset = frag->page_offset; |
|
3111 |
|
3112 while (len) { |
|
3113 buffer_info = &tx_ring->buffer_info[i]; |
|
3114 size = min(len, max_per_txd); |
|
3115 /* Workaround for premature desc write-backs |
|
3116 * in TSO mode. Append 4-byte sentinel desc */ |
|
3117 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
3118 size -= 4; |
|
3119 /* Workaround for potential 82544 hang in PCI-X. |
|
3120 * Avoid terminating buffers within evenly-aligned |
|
3121 * dwords. */ |
|
3122 if (unlikely(adapter->pcix_82544 && |
|
3123 !((unsigned long)(frag->page+offset+size-1) & 4) && |
|
3124 size > 4)) |
|
3125 size -= 4; |
|
3126 |
|
3127 buffer_info->length = size; |
|
3128 buffer_info->dma = |
|
3129 pci_map_page(adapter->pdev, |
|
3130 frag->page, |
|
3131 offset, |
|
3132 size, |
|
3133 PCI_DMA_TODEVICE); |
|
3134 buffer_info->time_stamp = jiffies; |
|
3135 buffer_info->next_to_watch = i; |
|
3136 |
|
3137 len -= size; |
|
3138 offset += size; |
|
3139 count++; |
|
3140 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3141 } |
|
3142 } |
|
3143 |
|
3144 i = (i == 0) ? tx_ring->count - 1 : i - 1; |
|
3145 tx_ring->buffer_info[i].skb = skb; |
|
3146 tx_ring->buffer_info[first].next_to_watch = i; |
|
3147 |
|
3148 return count; |
|
3149 } |
|
3150 |
|
3151 static void |
|
3152 e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
|
3153 int tx_flags, int count) |
|
3154 { |
|
3155 struct e1000_tx_desc *tx_desc = NULL; |
|
3156 struct e1000_buffer *buffer_info; |
|
3157 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
3158 unsigned int i; |
|
3159 |
|
3160 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
3161 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
3162 E1000_TXD_CMD_TSE; |
|
3163 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3164 |
|
3165 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
3166 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
3167 } |
|
3168 |
|
3169 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
3170 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
3171 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3172 } |
|
3173 |
|
3174 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
3175 txd_lower |= E1000_TXD_CMD_VLE; |
|
3176 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
3177 } |
|
3178 |
|
3179 i = tx_ring->next_to_use; |
|
3180 |
|
3181 while (count--) { |
|
3182 buffer_info = &tx_ring->buffer_info[i]; |
|
3183 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3184 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
3185 tx_desc->lower.data = |
|
3186 cpu_to_le32(txd_lower | buffer_info->length); |
|
3187 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
3188 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3189 } |
|
3190 |
|
3191 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
3192 |
|
3193 /* Force memory writes to complete before letting h/w |
|
3194 * know there are new descriptors to fetch. (Only |
|
3195 * applicable for weak-ordered memory model archs, |
|
3196 * such as IA-64). */ |
|
3197 wmb(); |
|
3198 |
|
3199 tx_ring->next_to_use = i; |
|
3200 writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
|
3201 /* we need this if more than one processor can write to our tail |
|
3202 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
3203 mmiowb(); |
|
3204 } |
|
3205 |
|
3206 /** |
|
3207 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
3208 * The workaround is to avoid queuing a large packet that would span |
|
3209 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
3210 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
3211 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
3212 * to the beginning of the Tx FIFO. |
|
3213 **/ |
|
3214 |
|
3215 #define E1000_FIFO_HDR 0x10 |
|
3216 #define E1000_82547_PAD_LEN 0x3E0 |
|
3217 |
|
3218 static int |
|
3219 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) |
|
3220 { |
|
3221 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
3222 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
3223 |
|
3224 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
3225 |
|
3226 if (adapter->link_duplex != HALF_DUPLEX) |
|
3227 goto no_fifo_stall_required; |
|
3228 |
|
3229 if (atomic_read(&adapter->tx_fifo_stall)) |
|
3230 return 1; |
|
3231 |
|
3232 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
3233 atomic_set(&adapter->tx_fifo_stall, 1); |
|
3234 return 1; |
|
3235 } |
|
3236 |
|
3237 no_fifo_stall_required: |
|
3238 adapter->tx_fifo_head += skb_fifo_len; |
|
3239 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
3240 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
3241 return 0; |
|
3242 } |
|
3243 |
|
3244 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
3245 static int |
|
3246 e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) |
|
3247 { |
|
3248 struct e1000_hw *hw = &adapter->hw; |
|
3249 uint16_t length, offset; |
|
3250 if (vlan_tx_tag_present(skb)) { |
|
3251 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
|
3252 ( adapter->hw.mng_cookie.status & |
|
3253 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) |
|
3254 return 0; |
|
3255 } |
|
3256 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
|
3257 struct ethhdr *eth = (struct ethhdr *) skb->data; |
|
3258 if ((htons(ETH_P_IP) == eth->h_proto)) { |
|
3259 const struct iphdr *ip = |
|
3260 (struct iphdr *)((uint8_t *)skb->data+14); |
|
3261 if (IPPROTO_UDP == ip->protocol) { |
|
3262 struct udphdr *udp = |
|
3263 (struct udphdr *)((uint8_t *)ip + |
|
3264 (ip->ihl << 2)); |
|
3265 if (ntohs(udp->dest) == 67) { |
|
3266 offset = (uint8_t *)udp + 8 - skb->data; |
|
3267 length = skb->len - offset; |
|
3268 |
|
3269 return e1000_mng_write_dhcp_info(hw, |
|
3270 (uint8_t *)udp + 8, |
|
3271 length); |
|
3272 } |
|
3273 } |
|
3274 } |
|
3275 } |
|
3276 return 0; |
|
3277 } |
|
3278 |
|
3279 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
3280 { |
|
3281 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3282 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
3283 |
|
3284 netif_stop_queue(netdev); |
|
3285 /* Herbert's original patch had: |
|
3286 * smp_mb__after_netif_stop_queue(); |
|
3287 * but since that doesn't exist yet, just open code it. */ |
|
3288 smp_mb(); |
|
3289 |
|
3290 /* We need to check again in a case another CPU has just |
|
3291 * made room available. */ |
|
3292 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
3293 return -EBUSY; |
|
3294 |
|
3295 /* A reprieve! */ |
|
3296 netif_start_queue(netdev); |
|
3297 ++adapter->restart_queue; |
|
3298 return 0; |
|
3299 } |
|
3300 |
|
3301 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
3302 struct e1000_tx_ring *tx_ring, int size) |
|
3303 { |
|
3304 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
3305 return 0; |
|
3306 return __e1000_maybe_stop_tx(netdev, size); |
|
3307 } |
|
3308 |
|
3309 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
3310 static int |
|
3311 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
|
3312 { |
|
3313 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3314 struct e1000_tx_ring *tx_ring; |
|
3315 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
3316 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
3317 unsigned int tx_flags = 0; |
|
3318 unsigned int len = skb->len; |
|
3319 unsigned long flags = 0; |
|
3320 unsigned int nr_frags = 0; |
|
3321 unsigned int mss = 0; |
|
3322 int count = 0; |
|
3323 int tso; |
|
3324 unsigned int f; |
|
3325 len -= skb->data_len; |
|
3326 |
|
3327 /* This goes back to the question of how to logically map a tx queue |
|
3328 * to a flow. Right now, performance is impacted slightly negatively |
|
3329 * if using multiple tx queues. If the stack breaks away from a |
|
3330 * single qdisc implementation, we can look at this again. */ |
|
3331 tx_ring = adapter->tx_ring; |
|
3332 |
|
3333 if (unlikely(skb->len <= 0)) { |
|
3334 if (!adapter->ecdev) |
|
3335 dev_kfree_skb_any(skb); |
|
3336 return NETDEV_TX_OK; |
|
3337 } |
|
3338 |
|
3339 /* 82571 and newer doesn't need the workaround that limited descriptor |
|
3340 * length to 4kB */ |
|
3341 if (adapter->hw.mac_type >= e1000_82571) |
|
3342 max_per_txd = 8192; |
|
3343 |
|
3344 mss = skb_shinfo(skb)->gso_size; |
|
3345 /* The controller does a simple calculation to |
|
3346 * make sure there is enough room in the FIFO before |
|
3347 * initiating the DMA for each buffer. The calc is: |
|
3348 * 4 = ceil(buffer len/mss). To make sure we don't |
|
3349 * overrun the FIFO, adjust the max buffer len if mss |
|
3350 * drops. */ |
|
3351 if (mss) { |
|
3352 uint8_t hdr_len; |
|
3353 max_per_txd = min(mss << 2, max_per_txd); |
|
3354 max_txd_pwr = fls(max_per_txd) - 1; |
|
3355 |
|
3356 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
3357 * points to just header, pull a few bytes of payload from |
|
3358 * frags into skb->data */ |
|
3359 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
3360 if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { |
|
3361 switch (adapter->hw.mac_type) { |
|
3362 unsigned int pull_size; |
|
3363 case e1000_82544: |
|
3364 /* Make sure we have room to chop off 4 bytes, |
|
3365 * and that the end alignment will work out to |
|
3366 * this hardware's requirements |
|
3367 * NOTE: this is a TSO only workaround |
|
3368 * if end byte alignment not correct move us |
|
3369 * into the next dword */ |
|
3370 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
3371 break; |
|
3372 /* fall through */ |
|
3373 case e1000_82571: |
|
3374 case e1000_82572: |
|
3375 case e1000_82573: |
|
3376 case e1000_ich8lan: |
|
3377 pull_size = min((unsigned int)4, skb->data_len); |
|
3378 if (!__pskb_pull_tail(skb, pull_size)) { |
|
3379 DPRINTK(DRV, ERR, |
|
3380 "__pskb_pull_tail failed.\n"); |
|
3381 dev_kfree_skb_any(skb); |
|
3382 return NETDEV_TX_OK; |
|
3383 } |
|
3384 len = skb->len - skb->data_len; |
|
3385 break; |
|
3386 default: |
|
3387 /* do nothing */ |
|
3388 break; |
|
3389 } |
|
3390 } |
|
3391 } |
|
3392 |
|
3393 /* reserve a descriptor for the offload context */ |
|
3394 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
3395 count++; |
|
3396 count++; |
|
3397 |
|
3398 /* Controller Erratum workaround */ |
|
3399 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
3400 count++; |
|
3401 |
|
3402 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
3403 |
|
3404 if (adapter->pcix_82544) |
|
3405 count++; |
|
3406 |
|
3407 /* work-around for errata 10 and it applies to all controllers |
|
3408 * in PCI-X mode, so add one more descriptor to the count |
|
3409 */ |
|
3410 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
|
3411 (len > 2015))) |
|
3412 count++; |
|
3413 |
|
3414 nr_frags = skb_shinfo(skb)->nr_frags; |
|
3415 for (f = 0; f < nr_frags; f++) |
|
3416 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3417 max_txd_pwr); |
|
3418 if (adapter->pcix_82544) |
|
3419 count += nr_frags; |
|
3420 |
|
3421 |
|
3422 if (adapter->hw.tx_pkt_filtering && |
|
3423 (adapter->hw.mac_type == e1000_82573)) |
|
3424 e1000_transfer_dhcp_info(adapter, skb); |
|
3425 |
|
3426 if (!adapter->ecdev) |
|
3427 if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) |
|
3428 /* Collision - tell upper layer to requeue */ |
|
3429 return NETDEV_TX_LOCKED; |
|
3430 |
|
3431 /* need: count + 2 desc gap to keep tail from touching |
|
3432 * head, otherwise try next time */ |
|
3433 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) { |
|
3434 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3435 return NETDEV_TX_BUSY; |
|
3436 } |
|
3437 |
|
3438 if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
|
3439 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3440 if (!adapter->ecdev) { |
|
3441 netif_stop_queue(netdev); |
|
3442 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
3443 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3444 } |
|
3445 return NETDEV_TX_BUSY; |
|
3446 } |
|
3447 } |
|
3448 |
|
3449 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
|
3450 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3451 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3452 } |
|
3453 |
|
3454 first = tx_ring->next_to_use; |
|
3455 |
|
3456 tso = e1000_tso(adapter, tx_ring, skb); |
|
3457 if (tso < 0) { |
|
3458 if (!adapter->ecdev) { |
|
3459 dev_kfree_skb_any(skb); |
|
3460 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3461 } |
|
3462 return NETDEV_TX_OK; |
|
3463 } |
|
3464 |
|
3465 if (likely(tso)) { |
|
3466 tx_ring->last_tx_tso = 1; |
|
3467 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3468 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3469 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3470 |
|
3471 /* Old method was to assume IPv4 packet by default if TSO was enabled. |
|
3472 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
3473 * no longer assume, we must. */ |
|
3474 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3475 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3476 |
|
3477 e1000_tx_queue(adapter, tx_ring, tx_flags, |
|
3478 e1000_tx_map(adapter, tx_ring, skb, first, |
|
3479 max_per_txd, nr_frags, mss)); |
|
3480 |
|
3481 netdev->trans_start = jiffies; |
|
3482 |
|
3483 if (!adapter->ecdev) { |
|
3484 /* Make sure there is space in the ring for the next send. */ |
|
3485 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3486 |
|
3487 spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
|
3488 } |
|
3489 return NETDEV_TX_OK; |
|
3490 } |
|
3491 |
|
3492 /** |
|
3493 * e1000_tx_timeout - Respond to a Tx Hang |
|
3494 * @netdev: network interface device structure |
|
3495 **/ |
|
3496 |
|
3497 static void |
|
3498 e1000_tx_timeout(struct net_device *netdev) |
|
3499 { |
|
3500 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3501 |
|
3502 /* Do the reset outside of interrupt context */ |
|
3503 adapter->tx_timeout_count++; |
|
3504 schedule_work(&adapter->reset_task); |
|
3505 } |
|
3506 |
|
3507 static void |
|
3508 e1000_reset_task(struct work_struct *work) |
|
3509 { |
|
3510 struct e1000_adapter *adapter = |
|
3511 container_of(work, struct e1000_adapter, reset_task); |
|
3512 |
|
3513 e1000_reinit_locked(adapter); |
|
3514 } |
|
3515 |
|
3516 /** |
|
3517 * e1000_get_stats - Get System Network Statistics |
|
3518 * @netdev: network interface device structure |
|
3519 * |
|
3520 * Returns the address of the device statistics structure. |
|
3521 * The statistics are actually updated from the timer callback. |
|
3522 **/ |
|
3523 |
|
3524 static struct net_device_stats * |
|
3525 e1000_get_stats(struct net_device *netdev) |
|
3526 { |
|
3527 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3528 |
|
3529 /* only return the current stats */ |
|
3530 return &adapter->net_stats; |
|
3531 } |
|
3532 |
|
3533 /** |
|
3534 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3535 * @netdev: network interface device structure |
|
3536 * @new_mtu: new value for maximum frame size |
|
3537 * |
|
3538 * Returns 0 on success, negative on failure |
|
3539 **/ |
|
3540 |
|
3541 static int |
|
3542 e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3543 { |
|
3544 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3545 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3546 uint16_t eeprom_data = 0; |
|
3547 |
|
3548 if (adapter->ecdev) |
|
3549 return -EBUSY; |
|
3550 |
|
3551 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3552 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3553 DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); |
|
3554 return -EINVAL; |
|
3555 } |
|
3556 |
|
3557 /* Adapter-specific max frame size limits. */ |
|
3558 switch (adapter->hw.mac_type) { |
|
3559 case e1000_undefined ... e1000_82542_rev2_1: |
|
3560 case e1000_ich8lan: |
|
3561 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
3562 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); |
|
3563 return -EINVAL; |
|
3564 } |
|
3565 break; |
|
3566 case e1000_82573: |
|
3567 /* Jumbo Frames not supported if: |
|
3568 * - this is not an 82573L device |
|
3569 * - ASPM is enabled in any way (0x1A bits 3:2) */ |
|
3570 e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, |
|
3571 &eeprom_data); |
|
3572 if ((adapter->hw.device_id != E1000_DEV_ID_82573L) || |
|
3573 (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { |
|
3574 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
3575 DPRINTK(PROBE, ERR, |
|
3576 "Jumbo Frames not supported.\n"); |
|
3577 return -EINVAL; |
|
3578 } |
|
3579 break; |
|
3580 } |
|
3581 /* ERT will be enabled later to enable wire speed receives */ |
|
3582 |
|
3583 /* fall through to get support */ |
|
3584 case e1000_82571: |
|
3585 case e1000_82572: |
|
3586 case e1000_80003es2lan: |
|
3587 #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
|
3588 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
|
3589 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); |
|
3590 return -EINVAL; |
|
3591 } |
|
3592 break; |
|
3593 default: |
|
3594 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3595 break; |
|
3596 } |
|
3597 |
|
3598 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3599 * means we reserve 2 more, this pushes us to allocate from the next |
|
3600 * larger slab size |
|
3601 * i.e. RXBUFFER_2048 --> size-4096 slab */ |
|
3602 |
|
3603 if (max_frame <= E1000_RXBUFFER_256) |
|
3604 adapter->rx_buffer_len = E1000_RXBUFFER_256; |
|
3605 else if (max_frame <= E1000_RXBUFFER_512) |
|
3606 adapter->rx_buffer_len = E1000_RXBUFFER_512; |
|
3607 else if (max_frame <= E1000_RXBUFFER_1024) |
|
3608 adapter->rx_buffer_len = E1000_RXBUFFER_1024; |
|
3609 else if (max_frame <= E1000_RXBUFFER_2048) |
|
3610 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3611 else if (max_frame <= E1000_RXBUFFER_4096) |
|
3612 adapter->rx_buffer_len = E1000_RXBUFFER_4096; |
|
3613 else if (max_frame <= E1000_RXBUFFER_8192) |
|
3614 adapter->rx_buffer_len = E1000_RXBUFFER_8192; |
|
3615 else if (max_frame <= E1000_RXBUFFER_16384) |
|
3616 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3617 |
|
3618 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3619 if (!adapter->hw.tbi_compatibility_on && |
|
3620 ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || |
|
3621 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3622 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3623 |
|
3624 netdev->mtu = new_mtu; |
|
3625 adapter->hw.max_frame_size = max_frame; |
|
3626 |
|
3627 if (netif_running(netdev)) |
|
3628 e1000_reinit_locked(adapter); |
|
3629 |
|
3630 return 0; |
|
3631 } |
|
3632 |
|
3633 /** |
|
3634 * e1000_update_stats - Update the board statistics counters |
|
3635 * @adapter: board private structure |
|
3636 **/ |
|
3637 |
|
3638 void |
|
3639 e1000_update_stats(struct e1000_adapter *adapter) |
|
3640 { |
|
3641 struct e1000_hw *hw = &adapter->hw; |
|
3642 struct pci_dev *pdev = adapter->pdev; |
|
3643 unsigned long flags = 0; |
|
3644 uint16_t phy_tmp; |
|
3645 |
|
3646 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3647 |
|
3648 /* |
|
3649 * Prevent stats update while adapter is being reset, or if the pci |
|
3650 * connection is down. |
|
3651 */ |
|
3652 if (adapter->link_speed == 0) |
|
3653 return; |
|
3654 if (pci_channel_offline(pdev)) |
|
3655 return; |
|
3656 |
|
3657 if (!adapter->ecdev) |
|
3658 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3659 |
|
3660 /* these counters are modified from e1000_adjust_tbi_stats, |
|
3661 * called from the interrupt context, so they must only |
|
3662 * be written while holding adapter->stats_lock |
|
3663 */ |
|
3664 |
|
3665 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); |
|
3666 adapter->stats.gprc += E1000_READ_REG(hw, GPRC); |
|
3667 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); |
|
3668 adapter->stats.gorch += E1000_READ_REG(hw, GORCH); |
|
3669 adapter->stats.bprc += E1000_READ_REG(hw, BPRC); |
|
3670 adapter->stats.mprc += E1000_READ_REG(hw, MPRC); |
|
3671 adapter->stats.roc += E1000_READ_REG(hw, ROC); |
|
3672 |
|
3673 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
3674 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); |
|
3675 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); |
|
3676 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); |
|
3677 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); |
|
3678 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); |
|
3679 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); |
|
3680 } |
|
3681 |
|
3682 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); |
|
3683 adapter->stats.mpc += E1000_READ_REG(hw, MPC); |
|
3684 adapter->stats.scc += E1000_READ_REG(hw, SCC); |
|
3685 adapter->stats.ecol += E1000_READ_REG(hw, ECOL); |
|
3686 adapter->stats.mcc += E1000_READ_REG(hw, MCC); |
|
3687 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); |
|
3688 adapter->stats.dc += E1000_READ_REG(hw, DC); |
|
3689 adapter->stats.sec += E1000_READ_REG(hw, SEC); |
|
3690 adapter->stats.rlec += E1000_READ_REG(hw, RLEC); |
|
3691 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); |
|
3692 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); |
|
3693 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); |
|
3694 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); |
|
3695 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); |
|
3696 adapter->stats.gptc += E1000_READ_REG(hw, GPTC); |
|
3697 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); |
|
3698 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); |
|
3699 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); |
|
3700 adapter->stats.ruc += E1000_READ_REG(hw, RUC); |
|
3701 adapter->stats.rfc += E1000_READ_REG(hw, RFC); |
|
3702 adapter->stats.rjc += E1000_READ_REG(hw, RJC); |
|
3703 adapter->stats.torl += E1000_READ_REG(hw, TORL); |
|
3704 adapter->stats.torh += E1000_READ_REG(hw, TORH); |
|
3705 adapter->stats.totl += E1000_READ_REG(hw, TOTL); |
|
3706 adapter->stats.toth += E1000_READ_REG(hw, TOTH); |
|
3707 adapter->stats.tpr += E1000_READ_REG(hw, TPR); |
|
3708 |
|
3709 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
3710 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); |
|
3711 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); |
|
3712 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); |
|
3713 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); |
|
3714 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); |
|
3715 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); |
|
3716 } |
|
3717 |
|
3718 adapter->stats.mptc += E1000_READ_REG(hw, MPTC); |
|
3719 adapter->stats.bptc += E1000_READ_REG(hw, BPTC); |
|
3720 |
|
3721 /* used for adaptive IFS */ |
|
3722 |
|
3723 hw->tx_packet_delta = E1000_READ_REG(hw, TPT); |
|
3724 adapter->stats.tpt += hw->tx_packet_delta; |
|
3725 hw->collision_delta = E1000_READ_REG(hw, COLC); |
|
3726 adapter->stats.colc += hw->collision_delta; |
|
3727 |
|
3728 if (hw->mac_type >= e1000_82543) { |
|
3729 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
|
3730 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); |
|
3731 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); |
|
3732 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); |
|
3733 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); |
|
3734 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); |
|
3735 } |
|
3736 if (hw->mac_type > e1000_82547_rev_2) { |
|
3737 adapter->stats.iac += E1000_READ_REG(hw, IAC); |
|
3738 adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); |
|
3739 |
|
3740 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
3741 adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); |
|
3742 adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); |
|
3743 adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); |
|
3744 adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); |
|
3745 adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); |
|
3746 adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); |
|
3747 adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); |
|
3748 } |
|
3749 } |
|
3750 |
|
3751 /* Fill out the OS statistics structure */ |
|
3752 adapter->net_stats.rx_packets = adapter->stats.gprc; |
|
3753 adapter->net_stats.tx_packets = adapter->stats.gptc; |
|
3754 adapter->net_stats.rx_bytes = adapter->stats.gorcl; |
|
3755 adapter->net_stats.tx_bytes = adapter->stats.gotcl; |
|
3756 adapter->net_stats.multicast = adapter->stats.mprc; |
|
3757 adapter->net_stats.collisions = adapter->stats.colc; |
|
3758 |
|
3759 /* Rx Errors */ |
|
3760 |
|
3761 /* RLEC on some newer hardware can be incorrect so build |
|
3762 * our own version based on RUC and ROC */ |
|
3763 adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
|
3764 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3765 adapter->stats.ruc + adapter->stats.roc + |
|
3766 adapter->stats.cexterr; |
|
3767 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3768 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; |
|
3769 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3770 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3771 adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
|
3772 |
|
3773 /* Tx Errors */ |
|
3774 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3775 adapter->net_stats.tx_errors = adapter->stats.txerrc; |
|
3776 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
|
3777 adapter->net_stats.tx_window_errors = adapter->stats.latecol; |
|
3778 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3779 if (adapter->hw.bad_tx_carr_stats_fd && |
|
3780 adapter->link_duplex == FULL_DUPLEX) { |
|
3781 adapter->net_stats.tx_carrier_errors = 0; |
|
3782 adapter->stats.tncrs = 0; |
|
3783 } |
|
3784 |
|
3785 /* Tx Dropped needs to be maintained elsewhere */ |
|
3786 |
|
3787 /* Phy Stats */ |
|
3788 if (hw->media_type == e1000_media_type_copper) { |
|
3789 if ((adapter->link_speed == SPEED_1000) && |
|
3790 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3791 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3792 adapter->phy_stats.idle_errors += phy_tmp; |
|
3793 } |
|
3794 |
|
3795 if ((hw->mac_type <= e1000_82546) && |
|
3796 (hw->phy_type == e1000_phy_m88) && |
|
3797 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3798 adapter->phy_stats.receive_errors += phy_tmp; |
|
3799 } |
|
3800 |
|
3801 /* Management Stats */ |
|
3802 if (adapter->hw.has_smbus) { |
|
3803 adapter->stats.mgptc += E1000_READ_REG(hw, MGTPTC); |
|
3804 adapter->stats.mgprc += E1000_READ_REG(hw, MGTPRC); |
|
3805 adapter->stats.mgpdc += E1000_READ_REG(hw, MGTPDC); |
|
3806 } |
|
3807 |
|
3808 if (!adapter->ecdev) |
|
3809 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3810 } |
|
3811 |
|
3812 void ec_poll(struct net_device *netdev) |
|
3813 { |
|
3814 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3815 |
|
3816 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
3817 e1000_watchdog((unsigned long) adapter); |
|
3818 adapter->ec_watchdog_jiffies = jiffies; |
|
3819 } |
|
3820 |
|
3821 #ifdef CONFIG_PCI_MSI |
|
3822 e1000_intr_msi(0, netdev); |
|
3823 #else |
|
3824 e1000_intr(0, netdev); |
|
3825 #endif |
|
3826 } |
|
3827 |
|
3828 /** |
|
3829 * e1000_intr_msi - Interrupt Handler |
|
3830 * @irq: interrupt number |
|
3831 * @data: pointer to a network interface device structure |
|
3832 **/ |
|
3833 |
|
3834 static irqreturn_t |
|
3835 e1000_intr_msi(int irq, void *data) |
|
3836 { |
|
3837 struct net_device *netdev = data; |
|
3838 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3839 struct e1000_hw *hw = &adapter->hw; |
|
3840 int i; |
|
3841 #ifdef CONFIG_E1000_NAPI |
|
3842 int ec_work_done = 0; |
|
3843 #endif |
|
3844 uint32_t icr = E1000_READ_REG(hw, ICR); |
|
3845 |
|
3846 if (adapter->ecdev) { |
|
3847 for (i = 0; i < E1000_MAX_INTR; i++) |
|
3848 #ifdef CONFIG_E1000_NAPI |
|
3849 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring, |
|
3850 &ec_work_done, 100) & |
|
3851 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
3852 #else |
|
3853 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & |
|
3854 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
3855 #endif |
|
3856 break; |
|
3857 } else { |
|
3858 #ifdef CONFIG_E1000_NAPI |
|
3859 /* read ICR disables interrupts using IAM, so keep up with our |
|
3860 * enable/disable accounting */ |
|
3861 atomic_inc(&adapter->irq_sem); |
|
3862 #endif |
|
3863 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
|
3864 hw->get_link_status = 1; |
|
3865 /* 80003ES2LAN workaround-- For packet buffer work-around on |
|
3866 * link down event; disable receives here in the ISR and reset |
|
3867 * adapter in watchdog */ |
|
3868 if (netif_carrier_ok(netdev) && |
|
3869 (adapter->hw.mac_type == e1000_80003es2lan)) { |
|
3870 /* disable receives */ |
|
3871 uint32_t rctl = E1000_READ_REG(hw, RCTL); |
|
3872 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); |
|
3873 } |
|
3874 /* guard against interrupt when we're going down */ |
|
3875 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3876 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3877 } |
|
3878 |
|
3879 #ifdef CONFIG_E1000_NAPI |
|
3880 if (likely(netif_rx_schedule_prep(netdev))) { |
|
3881 adapter->total_tx_bytes = 0; |
|
3882 adapter->total_tx_packets = 0; |
|
3883 adapter->total_rx_bytes = 0; |
|
3884 adapter->total_rx_packets = 0; |
|
3885 __netif_rx_schedule(netdev); |
|
3886 } else |
|
3887 e1000_irq_enable(adapter); |
|
3888 #else |
|
3889 adapter->total_tx_bytes = 0; |
|
3890 adapter->total_rx_bytes = 0; |
|
3891 adapter->total_tx_packets = 0; |
|
3892 adapter->total_rx_packets = 0; |
|
3893 |
|
3894 for (i = 0; i < E1000_MAX_INTR; i++) |
|
3895 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & |
|
3896 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
3897 break; |
|
3898 |
|
3899 if (likely(adapter->itr_setting & 3)) |
|
3900 e1000_set_itr(adapter); |
|
3901 #endif |
|
3902 } |
|
3903 |
|
3904 return IRQ_HANDLED; |
|
3905 } |
|
3906 |
|
3907 /** |
|
3908 * e1000_intr - Interrupt Handler |
|
3909 * @irq: interrupt number |
|
3910 * @data: pointer to a network interface device structure |
|
3911 **/ |
|
3912 |
|
3913 static irqreturn_t |
|
3914 e1000_intr(int irq, void *data) |
|
3915 { |
|
3916 struct net_device *netdev = data; |
|
3917 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3918 struct e1000_hw *hw = &adapter->hw; |
|
3919 uint32_t rctl, icr = E1000_READ_REG(hw, ICR); |
|
3920 int i; |
|
3921 #ifdef CONFIG_E1000_NAPI |
|
3922 int ec_work_done = 0; |
|
3923 #endif |
|
3924 if (unlikely(!icr)) |
|
3925 return IRQ_NONE; /* Not our interrupt */ |
|
3926 |
|
3927 #ifdef CONFIG_E1000_NAPI |
|
3928 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
3929 * not set, then the adapter didn't send an interrupt */ |
|
3930 if (unlikely(hw->mac_type >= e1000_82571 && |
|
3931 !(icr & E1000_ICR_INT_ASSERTED))) |
|
3932 return IRQ_NONE; |
|
3933 |
|
3934 /* Interrupt Auto-Mask...upon reading ICR, |
|
3935 * interrupts are masked. No need for the |
|
3936 * IMC write, but it does mean we should |
|
3937 * account for it ASAP. */ |
|
3938 if (!adapter->ecdev && likely(hw->mac_type >= e1000_82571)) |
|
3939 atomic_inc(&adapter->irq_sem); |
|
3940 #endif |
|
3941 |
|
3942 if (!adapter->ecdev && unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3943 hw->get_link_status = 1; |
|
3944 /* 80003ES2LAN workaround-- |
|
3945 * For packet buffer work-around on link down event; |
|
3946 * disable receives here in the ISR and |
|
3947 * reset adapter in watchdog |
|
3948 */ |
|
3949 if (netif_carrier_ok(netdev) && |
|
3950 (adapter->hw.mac_type == e1000_80003es2lan)) { |
|
3951 /* disable receives */ |
|
3952 rctl = E1000_READ_REG(hw, RCTL); |
|
3953 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); |
|
3954 } |
|
3955 /* guard against interrupt when we're going down */ |
|
3956 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3957 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3958 } |
|
3959 |
|
3960 if (adapter->ecdev) { |
|
3961 for (i = 0; i < E1000_MAX_INTR; i++) |
|
3962 #ifdef CONFIG_E1000_NAPI |
|
3963 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring, |
|
3964 &ec_work_done, 100) & |
|
3965 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
3966 #else |
|
3967 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & |
|
3968 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
3969 #endif |
|
3970 break; |
|
3971 } else { |
|
3972 #ifdef CONFIG_E1000_NAPI |
|
3973 if (unlikely(hw->mac_type < e1000_82571)) { |
|
3974 /* disable interrupts, without the synchronize_irq bit */ |
|
3975 atomic_inc(&adapter->irq_sem); |
|
3976 E1000_WRITE_REG(hw, IMC, ~0); |
|
3977 E1000_WRITE_FLUSH(hw); |
|
3978 } |
|
3979 if (likely(netif_rx_schedule_prep(netdev))) { |
|
3980 adapter->total_tx_bytes = 0; |
|
3981 adapter->total_tx_packets = 0; |
|
3982 adapter->total_rx_bytes = 0; |
|
3983 adapter->total_rx_packets = 0; |
|
3984 __netif_rx_schedule(netdev); |
|
3985 } else |
|
3986 /* this really should not happen! if it does it is basically a |
|
3987 * bug, but not a hard error, so enable ints and continue */ |
|
3988 e1000_irq_enable(adapter); |
|
3989 #else |
|
3990 /* Writing IMC and IMS is needed for 82547. |
|
3991 * Due to Hub Link bus being occupied, an interrupt |
|
3992 * de-assertion message is not able to be sent. |
|
3993 * When an interrupt assertion message is generated later, |
|
3994 * two messages are re-ordered and sent out. |
|
3995 * That causes APIC to think 82547 is in de-assertion |
|
3996 * state, while 82547 is in assertion state, resulting |
|
3997 * in dead lock. Writing IMC forces 82547 into |
|
3998 * de-assertion state. |
|
3999 */ |
|
4000 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { |
|
4001 atomic_inc(&adapter->irq_sem); |
|
4002 E1000_WRITE_REG(hw, IMC, ~0); |
|
4003 } |
|
4004 |
|
4005 adapter->total_tx_bytes = 0; |
|
4006 adapter->total_rx_bytes = 0; |
|
4007 adapter->total_tx_packets = 0; |
|
4008 adapter->total_rx_packets = 0; |
|
4009 |
|
4010 for (i = 0; i < E1000_MAX_INTR; i++) |
|
4011 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & |
|
4012 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
|
4013 break; |
|
4014 |
|
4015 if (likely(adapter->itr_setting & 3)) |
|
4016 e1000_set_itr(adapter); |
|
4017 |
|
4018 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
|
4019 e1000_irq_enable(adapter); |
|
4020 |
|
4021 #endif |
|
4022 } |
|
4023 return IRQ_HANDLED; |
|
4024 } |
|
4025 |
|
4026 #ifdef CONFIG_E1000_NAPI |
|
4027 /** |
|
4028 * e1000_clean - NAPI Rx polling callback |
|
4029 * @adapter: board private structure |
|
4030 **/ |
|
4031 |
|
4032 static int |
|
4033 e1000_clean(struct net_device *poll_dev, int *budget) // EtherCAT: never called |
|
4034 { |
|
4035 struct e1000_adapter *adapter; |
|
4036 int work_to_do = min(*budget, poll_dev->quota); |
|
4037 int tx_cleaned = 0, work_done = 0; |
|
4038 |
|
4039 /* Must NOT use netdev_priv macro here. */ |
|
4040 adapter = poll_dev->priv; |
|
4041 |
|
4042 /* Keep link state information with original netdev */ |
|
4043 if (!netif_carrier_ok(poll_dev)) |
|
4044 goto quit_polling; |
|
4045 |
|
4046 /* e1000_clean is called per-cpu. This lock protects |
|
4047 * tx_ring[0] from being cleaned by multiple cpus |
|
4048 * simultaneously. A failure obtaining the lock means |
|
4049 * tx_ring[0] is currently being cleaned anyway. */ |
|
4050 if (spin_trylock(&adapter->tx_queue_lock)) { |
|
4051 tx_cleaned = e1000_clean_tx_irq(adapter, |
|
4052 &adapter->tx_ring[0]); |
|
4053 spin_unlock(&adapter->tx_queue_lock); |
|
4054 } |
|
4055 |
|
4056 adapter->clean_rx(adapter, &adapter->rx_ring[0], |
|
4057 &work_done, work_to_do); |
|
4058 |
|
4059 *budget -= work_done; |
|
4060 poll_dev->quota -= work_done; |
|
4061 |
|
4062 /* If no Tx and not enough Rx work done, exit the polling mode */ |
|
4063 if ((!tx_cleaned && (work_done == 0)) || |
|
4064 !netif_running(poll_dev)) { |
|
4065 quit_polling: |
|
4066 if (likely(adapter->itr_setting & 3)) |
|
4067 e1000_set_itr(adapter); |
|
4068 netif_rx_complete(poll_dev); |
|
4069 e1000_irq_enable(adapter); |
|
4070 return 0; |
|
4071 } |
|
4072 |
|
4073 return 1; |
|
4074 } |
|
4075 |
|
4076 #endif |
|
4077 /** |
|
4078 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
4079 * @adapter: board private structure |
|
4080 **/ |
|
4081 |
|
4082 static boolean_t |
|
4083 e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
4084 struct e1000_tx_ring *tx_ring) |
|
4085 { |
|
4086 struct net_device *netdev = adapter->netdev; |
|
4087 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
4088 struct e1000_buffer *buffer_info; |
|
4089 unsigned int i, eop; |
|
4090 #ifdef CONFIG_E1000_NAPI |
|
4091 unsigned int count = 0; |
|
4092 #endif |
|
4093 boolean_t cleaned = FALSE; |
|
4094 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
4095 |
|
4096 i = tx_ring->next_to_clean; |
|
4097 eop = tx_ring->buffer_info[i].next_to_watch; |
|
4098 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
4099 |
|
4100 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
|
4101 for (cleaned = FALSE; !cleaned; ) { |
|
4102 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
4103 buffer_info = &tx_ring->buffer_info[i]; |
|
4104 cleaned = (i == eop); |
|
4105 |
|
4106 if (cleaned) { |
|
4107 struct sk_buff *skb = buffer_info->skb; |
|
4108 unsigned int segs, bytecount; |
|
4109 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
4110 /* multiply data chunks by size of headers */ |
|
4111 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
4112 skb->len; |
|
4113 total_tx_packets += segs; |
|
4114 total_tx_bytes += bytecount; |
|
4115 } |
|
4116 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
4117 tx_desc->upper.data = 0; |
|
4118 |
|
4119 if (unlikely(++i == tx_ring->count)) i = 0; |
|
4120 } |
|
4121 |
|
4122 eop = tx_ring->buffer_info[i].next_to_watch; |
|
4123 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
4124 #ifdef CONFIG_E1000_NAPI |
|
4125 #define E1000_TX_WEIGHT 64 |
|
4126 /* weight of a sort for tx, to avoid endless transmit cleanup */ |
|
4127 if (count++ == E1000_TX_WEIGHT) break; |
|
4128 #endif |
|
4129 } |
|
4130 |
|
4131 tx_ring->next_to_clean = i; |
|
4132 |
|
4133 #define TX_WAKE_THRESHOLD 32 |
|
4134 if (!adapter->ecdev && unlikely(cleaned && netif_carrier_ok(netdev) && |
|
4135 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
4136 /* Make sure that anybody stopping the queue after this |
|
4137 * sees the new next_to_clean. |
|
4138 */ |
|
4139 smp_mb(); |
|
4140 if (netif_queue_stopped(netdev)) { |
|
4141 netif_wake_queue(netdev); |
|
4142 ++adapter->restart_queue; |
|
4143 } |
|
4144 } |
|
4145 |
|
4146 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
4147 /* Detect a transmit hang in hardware, this serializes the |
|
4148 * check with the clearing of time_stamp and movement of i */ |
|
4149 adapter->detect_tx_hung = FALSE; |
|
4150 if (tx_ring->buffer_info[eop].dma && |
|
4151 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + |
|
4152 (adapter->tx_timeout_factor * HZ)) |
|
4153 && !(E1000_READ_REG(&adapter->hw, STATUS) & |
|
4154 E1000_STATUS_TXOFF)) { |
|
4155 |
|
4156 /* detected Tx unit hang */ |
|
4157 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
|
4158 " Tx Queue <%lu>\n" |
|
4159 " TDH <%x>\n" |
|
4160 " TDT <%x>\n" |
|
4161 " next_to_use <%x>\n" |
|
4162 " next_to_clean <%x>\n" |
|
4163 "buffer_info[next_to_clean]\n" |
|
4164 " time_stamp <%lx>\n" |
|
4165 " next_to_watch <%x>\n" |
|
4166 " jiffies <%lx>\n" |
|
4167 " next_to_watch.status <%x>\n", |
|
4168 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
4169 sizeof(struct e1000_tx_ring)), |
|
4170 readl(adapter->hw.hw_addr + tx_ring->tdh), |
|
4171 readl(adapter->hw.hw_addr + tx_ring->tdt), |
|
4172 tx_ring->next_to_use, |
|
4173 tx_ring->next_to_clean, |
|
4174 tx_ring->buffer_info[eop].time_stamp, |
|
4175 eop, |
|
4176 jiffies, |
|
4177 eop_desc->upper.fields.status); |
|
4178 netif_stop_queue(netdev); |
|
4179 } |
|
4180 } |
|
4181 adapter->total_tx_bytes += total_tx_bytes; |
|
4182 adapter->total_tx_packets += total_tx_packets; |
|
4183 return cleaned; |
|
4184 } |
|
4185 |
|
4186 /** |
|
4187 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
4188 * @adapter: board private structure |
|
4189 * @status_err: receive descriptor status and error fields |
|
4190 * @csum: receive descriptor csum field |
|
4191 * @sk_buff: socket buffer with received data |
|
4192 **/ |
|
4193 |
|
4194 static void |
|
4195 e1000_rx_checksum(struct e1000_adapter *adapter, |
|
4196 uint32_t status_err, uint32_t csum, |
|
4197 struct sk_buff *skb) |
|
4198 { |
|
4199 uint16_t status = (uint16_t)status_err; |
|
4200 uint8_t errors = (uint8_t)(status_err >> 24); |
|
4201 skb->ip_summed = CHECKSUM_NONE; |
|
4202 |
|
4203 /* 82543 or newer only */ |
|
4204 if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
|
4205 /* Ignore Checksum bit is set */ |
|
4206 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
4207 /* TCP/UDP checksum error bit is set */ |
|
4208 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
4209 /* let the stack verify checksum errors */ |
|
4210 adapter->hw_csum_err++; |
|
4211 return; |
|
4212 } |
|
4213 /* TCP/UDP Checksum has not been calculated */ |
|
4214 if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
|
4215 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
4216 return; |
|
4217 } else { |
|
4218 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
4219 return; |
|
4220 } |
|
4221 /* It must be a TCP or UDP packet with a valid checksum */ |
|
4222 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
4223 /* TCP checksum is good */ |
|
4224 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
4225 } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
|
4226 /* IP fragment with UDP payload */ |
|
4227 /* Hardware complements the payload checksum, so we undo it |
|
4228 * and then put the value in host order for further stack use. |
|
4229 */ |
|
4230 csum = ntohl(csum ^ 0xFFFF); |
|
4231 skb->csum = csum; |
|
4232 skb->ip_summed = CHECKSUM_COMPLETE; |
|
4233 } |
|
4234 adapter->hw_csum_good++; |
|
4235 } |
|
4236 |
|
4237 /** |
|
4238 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
4239 * @adapter: board private structure |
|
4240 **/ |
|
4241 |
|
4242 static boolean_t |
|
4243 #ifdef CONFIG_E1000_NAPI |
|
4244 e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
4245 struct e1000_rx_ring *rx_ring, |
|
4246 int *work_done, int work_to_do) |
|
4247 #else |
|
4248 e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
4249 struct e1000_rx_ring *rx_ring) |
|
4250 #endif |
|
4251 { |
|
4252 struct net_device *netdev = adapter->netdev; |
|
4253 struct pci_dev *pdev = adapter->pdev; |
|
4254 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
4255 struct e1000_buffer *buffer_info, *next_buffer; |
|
4256 unsigned long flags; |
|
4257 uint32_t length; |
|
4258 uint8_t last_byte; |
|
4259 unsigned int i; |
|
4260 int cleaned_count = 0; |
|
4261 boolean_t cleaned = FALSE; |
|
4262 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
4263 |
|
4264 i = rx_ring->next_to_clean; |
|
4265 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4266 buffer_info = &rx_ring->buffer_info[i]; |
|
4267 |
|
4268 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
4269 struct sk_buff *skb; |
|
4270 u8 status; |
|
4271 |
|
4272 #ifdef CONFIG_E1000_NAPI |
|
4273 if (*work_done >= work_to_do) |
|
4274 break; |
|
4275 (*work_done)++; |
|
4276 #endif |
|
4277 status = rx_desc->status; |
|
4278 skb = buffer_info->skb; |
|
4279 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
4280 |
|
4281 prefetch(skb->data - NET_IP_ALIGN); |
|
4282 |
|
4283 if (++i == rx_ring->count) i = 0; |
|
4284 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
4285 prefetch(next_rxd); |
|
4286 |
|
4287 next_buffer = &rx_ring->buffer_info[i]; |
|
4288 |
|
4289 cleaned = TRUE; |
|
4290 cleaned_count++; |
|
4291 pci_unmap_single(pdev, |
|
4292 buffer_info->dma, |
|
4293 buffer_info->length, |
|
4294 PCI_DMA_FROMDEVICE); |
|
4295 |
|
4296 length = le16_to_cpu(rx_desc->length); |
|
4297 |
|
4298 if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
|
4299 /* All receives must fit into a single buffer */ |
|
4300 E1000_DBG("%s: Receive packet consumed multiple" |
|
4301 " buffers\n", netdev->name); |
|
4302 /* recycle */ |
|
4303 buffer_info->skb = skb; |
|
4304 goto next_desc; |
|
4305 } |
|
4306 |
|
4307 if (!adapter->ecdev && |
|
4308 unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
4309 last_byte = *(skb->data + length - 1); |
|
4310 if (TBI_ACCEPT(&adapter->hw, status, |
|
4311 rx_desc->errors, length, last_byte)) { |
|
4312 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4313 e1000_tbi_adjust_stats(&adapter->hw, |
|
4314 &adapter->stats, |
|
4315 length, skb->data); |
|
4316 spin_unlock_irqrestore(&adapter->stats_lock, |
|
4317 flags); |
|
4318 length--; |
|
4319 } else { |
|
4320 /* recycle */ |
|
4321 buffer_info->skb = skb; |
|
4322 goto next_desc; |
|
4323 } |
|
4324 } |
|
4325 |
|
4326 /* adjust length to remove Ethernet CRC, this must be |
|
4327 * done after the TBI_ACCEPT workaround above */ |
|
4328 length -= 4; |
|
4329 |
|
4330 /* probably a little skewed due to removing CRC */ |
|
4331 total_rx_bytes += length; |
|
4332 total_rx_packets++; |
|
4333 |
|
4334 /* code added for copybreak, this should improve |
|
4335 * performance for small packets with large amounts |
|
4336 * of reassembly being done in the stack */ |
|
4337 if (!adapter->ecdev && length < copybreak) { |
|
4338 struct sk_buff *new_skb = |
|
4339 netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
|
4340 if (new_skb) { |
|
4341 skb_reserve(new_skb, NET_IP_ALIGN); |
|
4342 skb_copy_to_linear_data_offset(new_skb, |
|
4343 -NET_IP_ALIGN, |
|
4344 (skb->data - |
|
4345 NET_IP_ALIGN), |
|
4346 (length + |
|
4347 NET_IP_ALIGN)); |
|
4348 /* save the skb in buffer_info as good */ |
|
4349 buffer_info->skb = skb; |
|
4350 skb = new_skb; |
|
4351 } |
|
4352 /* else just continue with the old one */ |
|
4353 } |
|
4354 /* end copybreak code */ |
|
4355 skb_put(skb, length); |
|
4356 |
|
4357 /* Receive Checksum Offload */ |
|
4358 e1000_rx_checksum(adapter, |
|
4359 (uint32_t)(status) | |
|
4360 ((uint32_t)(rx_desc->errors) << 24), |
|
4361 le16_to_cpu(rx_desc->csum), skb); |
|
4362 |
|
4363 if (adapter->ecdev) { |
|
4364 ecdev_receive(adapter->ecdev, skb->data, length); |
|
4365 } else { |
|
4366 skb->protocol = eth_type_trans(skb, netdev); |
|
4367 #ifdef CONFIG_E1000_NAPI |
|
4368 if (unlikely(adapter->vlgrp && |
|
4369 (status & E1000_RXD_STAT_VP))) { |
|
4370 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
|
4371 le16_to_cpu(rx_desc->special) & |
|
4372 E1000_RXD_SPC_VLAN_MASK); |
|
4373 } else { |
|
4374 netif_receive_skb(skb); |
|
4375 } |
|
4376 #else /* CONFIG_E1000_NAPI */ |
|
4377 if (unlikely(adapter->vlgrp && |
|
4378 (status & E1000_RXD_STAT_VP))) { |
|
4379 vlan_hwaccel_rx(skb, adapter->vlgrp, |
|
4380 le16_to_cpu(rx_desc->special) & |
|
4381 E1000_RXD_SPC_VLAN_MASK); |
|
4382 } else { |
|
4383 netif_rx(skb); |
|
4384 } |
|
4385 #endif /* CONFIG_E1000_NAPI */ |
|
4386 } |
|
4387 netdev->last_rx = jiffies; |
|
4388 |
|
4389 next_desc: |
|
4390 rx_desc->status = 0; |
|
4391 |
|
4392 /* return some buffers to hardware, one at a time is too slow */ |
|
4393 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4394 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4395 cleaned_count = 0; |
|
4396 } |
|
4397 |
|
4398 /* use prefetched values */ |
|
4399 rx_desc = next_rxd; |
|
4400 buffer_info = next_buffer; |
|
4401 } |
|
4402 rx_ring->next_to_clean = i; |
|
4403 |
|
4404 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4405 if (cleaned_count) |
|
4406 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4407 |
|
4408 adapter->total_rx_packets += total_rx_packets; |
|
4409 adapter->total_rx_bytes += total_rx_bytes; |
|
4410 return cleaned; |
|
4411 } |
|
4412 |
|
4413 /** |
|
4414 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split |
|
4415 * @adapter: board private structure |
|
4416 **/ |
|
4417 |
|
4418 static boolean_t |
|
4419 #ifdef CONFIG_E1000_NAPI |
|
4420 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
|
4421 struct e1000_rx_ring *rx_ring, |
|
4422 int *work_done, int work_to_do) |
|
4423 #else |
|
4424 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
|
4425 struct e1000_rx_ring *rx_ring) |
|
4426 #endif |
|
4427 { |
|
4428 union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
|
4429 struct net_device *netdev = adapter->netdev; |
|
4430 struct pci_dev *pdev = adapter->pdev; |
|
4431 struct e1000_buffer *buffer_info, *next_buffer; |
|
4432 struct e1000_ps_page *ps_page; |
|
4433 struct e1000_ps_page_dma *ps_page_dma; |
|
4434 struct sk_buff *skb; |
|
4435 unsigned int i, j; |
|
4436 uint32_t length, staterr; |
|
4437 int cleaned_count = 0; |
|
4438 boolean_t cleaned = FALSE; |
|
4439 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
4440 |
|
4441 i = rx_ring->next_to_clean; |
|
4442 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
4443 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
4444 buffer_info = &rx_ring->buffer_info[i]; |
|
4445 |
|
4446 while (staterr & E1000_RXD_STAT_DD) { |
|
4447 ps_page = &rx_ring->ps_page[i]; |
|
4448 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
4449 #ifdef CONFIG_E1000_NAPI |
|
4450 if (unlikely(*work_done >= work_to_do)) |
|
4451 break; |
|
4452 (*work_done)++; |
|
4453 #endif |
|
4454 skb = buffer_info->skb; |
|
4455 |
|
4456 /* in the packet split case this is header only */ |
|
4457 prefetch(skb->data - NET_IP_ALIGN); |
|
4458 |
|
4459 if (++i == rx_ring->count) i = 0; |
|
4460 next_rxd = E1000_RX_DESC_PS(*rx_ring, i); |
|
4461 prefetch(next_rxd); |
|
4462 |
|
4463 next_buffer = &rx_ring->buffer_info[i]; |
|
4464 |
|
4465 cleaned = TRUE; |
|
4466 cleaned_count++; |
|
4467 pci_unmap_single(pdev, buffer_info->dma, |
|
4468 buffer_info->length, |
|
4469 PCI_DMA_FROMDEVICE); |
|
4470 |
|
4471 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
|
4472 E1000_DBG("%s: Packet Split buffers didn't pick up" |
|
4473 " the full packet\n", netdev->name); |
|
4474 if (!adapter->ecdev) dev_kfree_skb_irq(skb); |
|
4475 goto next_desc; |
|
4476 } |
|
4477 |
|
4478 if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
|
4479 if (!adapter->ecdev) dev_kfree_skb_irq(skb); |
|
4480 goto next_desc; |
|
4481 } |
|
4482 |
|
4483 length = le16_to_cpu(rx_desc->wb.middle.length0); |
|
4484 |
|
4485 if (unlikely(!length)) { |
|
4486 E1000_DBG("%s: Last part of the packet spanning" |
|
4487 " multiple descriptors\n", netdev->name); |
|
4488 if (!adapter->ecdev) dev_kfree_skb_irq(skb); |
|
4489 goto next_desc; |
|
4490 } |
|
4491 |
|
4492 /* Good Receive */ |
|
4493 skb_put(skb, length); |
|
4494 |
|
4495 { |
|
4496 /* this looks ugly, but it seems compiler issues make it |
|
4497 more efficient than reusing j */ |
|
4498 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
|
4499 |
|
4500 /* page alloc/put takes too long and effects small packet |
|
4501 * throughput, so unsplit small packets and save the alloc/put*/ |
|
4502 if (l1 && (l1 <= copybreak) && ((length + l1) <= adapter->rx_ps_bsize0)) { |
|
4503 u8 *vaddr; |
|
4504 /* there is no documentation about how to call |
|
4505 * kmap_atomic, so we can't hold the mapping |
|
4506 * very long */ |
|
4507 pci_dma_sync_single_for_cpu(pdev, |
|
4508 ps_page_dma->ps_page_dma[0], |
|
4509 PAGE_SIZE, |
|
4510 PCI_DMA_FROMDEVICE); |
|
4511 vaddr = kmap_atomic(ps_page->ps_page[0], |
|
4512 KM_SKB_DATA_SOFTIRQ); |
|
4513 memcpy(skb_tail_pointer(skb), vaddr, l1); |
|
4514 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); |
|
4515 pci_dma_sync_single_for_device(pdev, |
|
4516 ps_page_dma->ps_page_dma[0], |
|
4517 PAGE_SIZE, PCI_DMA_FROMDEVICE); |
|
4518 /* remove the CRC */ |
|
4519 l1 -= 4; |
|
4520 skb_put(skb, l1); |
|
4521 goto copydone; |
|
4522 } /* if */ |
|
4523 } |
|
4524 |
|
4525 for (j = 0; j < adapter->rx_ps_pages; j++) { |
|
4526 if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
|
4527 break; |
|
4528 pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
|
4529 PAGE_SIZE, PCI_DMA_FROMDEVICE); |
|
4530 ps_page_dma->ps_page_dma[j] = 0; |
|
4531 skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
|
4532 length); |
|
4533 ps_page->ps_page[j] = NULL; |
|
4534 skb->len += length; |
|
4535 skb->data_len += length; |
|
4536 skb->truesize += length; |
|
4537 } |
|
4538 |
|
4539 /* strip the ethernet crc, problem is we're using pages now so |
|
4540 * this whole operation can get a little cpu intensive */ |
|
4541 pskb_trim(skb, skb->len - 4); |
|
4542 |
|
4543 copydone: |
|
4544 total_rx_bytes += skb->len; |
|
4545 total_rx_packets++; |
|
4546 |
|
4547 e1000_rx_checksum(adapter, staterr, |
|
4548 le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
|
4549 |
|
4550 if (likely(rx_desc->wb.upper.header_status & |
|
4551 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))) |
|
4552 adapter->rx_hdr_split++; |
|
4553 if (adapter->ecdev) { |
|
4554 ecdev_receive(adapter->ecdev, skb->data, length); |
|
4555 } else { |
|
4556 skb->protocol = eth_type_trans(skb, netdev); |
|
4557 #ifdef CONFIG_E1000_NAPI |
|
4558 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
|
4559 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
|
4560 le16_to_cpu(rx_desc->wb.middle.vlan) & |
|
4561 E1000_RXD_SPC_VLAN_MASK); |
|
4562 } else { |
|
4563 netif_receive_skb(skb); |
|
4564 } |
|
4565 #else /* CONFIG_E1000_NAPI */ |
|
4566 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
|
4567 vlan_hwaccel_rx(skb, adapter->vlgrp, |
|
4568 le16_to_cpu(rx_desc->wb.middle.vlan) & |
|
4569 E1000_RXD_SPC_VLAN_MASK); |
|
4570 } else { |
|
4571 netif_rx(skb); |
|
4572 } |
|
4573 #endif /* CONFIG_E1000_NAPI */ |
|
4574 } |
|
4575 netdev->last_rx = jiffies; |
|
4576 |
|
4577 next_desc: |
|
4578 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
|
4579 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
4580 |
|
4581 /* return some buffers to hardware, one at a time is too slow */ |
|
4582 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4583 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4584 cleaned_count = 0; |
|
4585 } |
|
4586 |
|
4587 /* use prefetched values */ |
|
4588 rx_desc = next_rxd; |
|
4589 buffer_info = next_buffer; |
|
4590 |
|
4591 staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
|
4592 } |
|
4593 rx_ring->next_to_clean = i; |
|
4594 |
|
4595 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4596 if (cleaned_count) |
|
4597 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4598 |
|
4599 adapter->total_rx_packets += total_rx_packets; |
|
4600 adapter->total_rx_bytes += total_rx_bytes; |
|
4601 return cleaned; |
|
4602 } |
|
4603 |
|
4604 /** |
|
4605 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4606 * @adapter: address of board private structure |
|
4607 **/ |
|
4608 |
|
4609 static void |
|
4610 e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4611 struct e1000_rx_ring *rx_ring, |
|
4612 int cleaned_count) |
|
4613 { |
|
4614 struct net_device *netdev = adapter->netdev; |
|
4615 struct pci_dev *pdev = adapter->pdev; |
|
4616 struct e1000_rx_desc *rx_desc; |
|
4617 struct e1000_buffer *buffer_info; |
|
4618 struct sk_buff *skb; |
|
4619 unsigned int i; |
|
4620 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; |
|
4621 |
|
4622 i = rx_ring->next_to_use; |
|
4623 buffer_info = &rx_ring->buffer_info[i]; |
|
4624 |
|
4625 while (cleaned_count--) { |
|
4626 skb = buffer_info->skb; |
|
4627 if (skb) { |
|
4628 skb_trim(skb, 0); |
|
4629 goto map_skb; |
|
4630 } |
|
4631 |
|
4632 skb = netdev_alloc_skb(netdev, bufsz); |
|
4633 if (unlikely(!skb)) { |
|
4634 /* Better luck next round */ |
|
4635 adapter->alloc_rx_buff_failed++; |
|
4636 break; |
|
4637 } |
|
4638 |
|
4639 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4640 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4641 struct sk_buff *oldskb = skb; |
|
4642 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
|
4643 "at %p\n", bufsz, skb->data); |
|
4644 /* Try again, without freeing the previous */ |
|
4645 skb = netdev_alloc_skb(netdev, bufsz); |
|
4646 /* Failed allocation, critical failure */ |
|
4647 if (!skb) { |
|
4648 dev_kfree_skb(oldskb); |
|
4649 break; |
|
4650 } |
|
4651 |
|
4652 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4653 /* give up */ |
|
4654 dev_kfree_skb(skb); |
|
4655 dev_kfree_skb(oldskb); |
|
4656 break; /* while !buffer_info->skb */ |
|
4657 } |
|
4658 |
|
4659 /* Use new allocation */ |
|
4660 dev_kfree_skb(oldskb); |
|
4661 } |
|
4662 /* Make buffer alignment 2 beyond a 16 byte boundary |
|
4663 * this will result in a 16 byte aligned IP header after |
|
4664 * the 14 byte MAC header is removed |
|
4665 */ |
|
4666 skb_reserve(skb, NET_IP_ALIGN); |
|
4667 |
|
4668 buffer_info->skb = skb; |
|
4669 buffer_info->length = adapter->rx_buffer_len; |
|
4670 map_skb: |
|
4671 buffer_info->dma = pci_map_single(pdev, |
|
4672 skb->data, |
|
4673 adapter->rx_buffer_len, |
|
4674 PCI_DMA_FROMDEVICE); |
|
4675 |
|
4676 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4677 if (!e1000_check_64k_bound(adapter, |
|
4678 (void *)(unsigned long)buffer_info->dma, |
|
4679 adapter->rx_buffer_len)) { |
|
4680 DPRINTK(RX_ERR, ERR, |
|
4681 "dma align check failed: %u bytes at %p\n", |
|
4682 adapter->rx_buffer_len, |
|
4683 (void *)(unsigned long)buffer_info->dma); |
|
4684 if (!adapter->ecdev) { |
|
4685 dev_kfree_skb(skb); |
|
4686 buffer_info->skb = NULL; |
|
4687 } |
|
4688 |
|
4689 pci_unmap_single(pdev, buffer_info->dma, |
|
4690 adapter->rx_buffer_len, |
|
4691 PCI_DMA_FROMDEVICE); |
|
4692 |
|
4693 break; /* while !buffer_info->skb */ |
|
4694 } |
|
4695 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4696 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4697 |
|
4698 if (unlikely(++i == rx_ring->count)) |
|
4699 i = 0; |
|
4700 buffer_info = &rx_ring->buffer_info[i]; |
|
4701 } |
|
4702 |
|
4703 if (likely(rx_ring->next_to_use != i)) { |
|
4704 rx_ring->next_to_use = i; |
|
4705 if (unlikely(i-- == 0)) |
|
4706 i = (rx_ring->count - 1); |
|
4707 |
|
4708 /* Force memory writes to complete before letting h/w |
|
4709 * know there are new descriptors to fetch. (Only |
|
4710 * applicable for weak-ordered memory model archs, |
|
4711 * such as IA-64). */ |
|
4712 wmb(); |
|
4713 writel(i, adapter->hw.hw_addr + rx_ring->rdt); |
|
4714 } |
|
4715 } |
|
4716 |
|
4717 /** |
|
4718 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split |
|
4719 * @adapter: address of board private structure |
|
4720 **/ |
|
4721 |
|
4722 static void |
|
4723 e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
|
4724 struct e1000_rx_ring *rx_ring, |
|
4725 int cleaned_count) |
|
4726 { |
|
4727 struct net_device *netdev = adapter->netdev; |
|
4728 struct pci_dev *pdev = adapter->pdev; |
|
4729 union e1000_rx_desc_packet_split *rx_desc; |
|
4730 struct e1000_buffer *buffer_info; |
|
4731 struct e1000_ps_page *ps_page; |
|
4732 struct e1000_ps_page_dma *ps_page_dma; |
|
4733 struct sk_buff *skb; |
|
4734 unsigned int i, j; |
|
4735 |
|
4736 i = rx_ring->next_to_use; |
|
4737 buffer_info = &rx_ring->buffer_info[i]; |
|
4738 ps_page = &rx_ring->ps_page[i]; |
|
4739 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
4740 |
|
4741 while (cleaned_count--) { |
|
4742 rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
|
4743 |
|
4744 for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
|
4745 if (j < adapter->rx_ps_pages) { |
|
4746 if (likely(!ps_page->ps_page[j])) { |
|
4747 ps_page->ps_page[j] = |
|
4748 alloc_page(GFP_ATOMIC); |
|
4749 if (unlikely(!ps_page->ps_page[j])) { |
|
4750 adapter->alloc_rx_buff_failed++; |
|
4751 goto no_buffers; |
|
4752 } |
|
4753 ps_page_dma->ps_page_dma[j] = |
|
4754 pci_map_page(pdev, |
|
4755 ps_page->ps_page[j], |
|
4756 0, PAGE_SIZE, |
|
4757 PCI_DMA_FROMDEVICE); |
|
4758 } |
|
4759 /* Refresh the desc even if buffer_addrs didn't |
|
4760 * change because each write-back erases |
|
4761 * this info. |
|
4762 */ |
|
4763 rx_desc->read.buffer_addr[j+1] = |
|
4764 cpu_to_le64(ps_page_dma->ps_page_dma[j]); |
|
4765 } else |
|
4766 rx_desc->read.buffer_addr[j+1] = ~0; |
|
4767 } |
|
4768 |
|
4769 skb = netdev_alloc_skb(netdev, |
|
4770 adapter->rx_ps_bsize0 + NET_IP_ALIGN); |
|
4771 |
|
4772 if (unlikely(!skb)) { |
|
4773 adapter->alloc_rx_buff_failed++; |
|
4774 break; |
|
4775 } |
|
4776 |
|
4777 /* Make buffer alignment 2 beyond a 16 byte boundary |
|
4778 * this will result in a 16 byte aligned IP header after |
|
4779 * the 14 byte MAC header is removed |
|
4780 */ |
|
4781 skb_reserve(skb, NET_IP_ALIGN); |
|
4782 |
|
4783 buffer_info->skb = skb; |
|
4784 buffer_info->length = adapter->rx_ps_bsize0; |
|
4785 buffer_info->dma = pci_map_single(pdev, skb->data, |
|
4786 adapter->rx_ps_bsize0, |
|
4787 PCI_DMA_FROMDEVICE); |
|
4788 |
|
4789 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); |
|
4790 |
|
4791 if (unlikely(++i == rx_ring->count)) i = 0; |
|
4792 buffer_info = &rx_ring->buffer_info[i]; |
|
4793 ps_page = &rx_ring->ps_page[i]; |
|
4794 ps_page_dma = &rx_ring->ps_page_dma[i]; |
|
4795 } |
|
4796 |
|
4797 no_buffers: |
|
4798 if (likely(rx_ring->next_to_use != i)) { |
|
4799 rx_ring->next_to_use = i; |
|
4800 if (unlikely(i-- == 0)) i = (rx_ring->count - 1); |
|
4801 |
|
4802 /* Force memory writes to complete before letting h/w |
|
4803 * know there are new descriptors to fetch. (Only |
|
4804 * applicable for weak-ordered memory model archs, |
|
4805 * such as IA-64). */ |
|
4806 wmb(); |
|
4807 /* Hardware increments by 16 bytes, but packet split |
|
4808 * descriptors are 32 bytes...so we increment tail |
|
4809 * twice as much. |
|
4810 */ |
|
4811 writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); |
|
4812 } |
|
4813 } |
|
4814 |
|
4815 /** |
|
4816 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4817 * @adapter: |
|
4818 **/ |
|
4819 |
|
4820 static void |
|
4821 e1000_smartspeed(struct e1000_adapter *adapter) |
|
4822 { |
|
4823 uint16_t phy_status; |
|
4824 uint16_t phy_ctrl; |
|
4825 |
|
4826 if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
|
4827 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4828 return; |
|
4829 |
|
4830 if (adapter->smartspeed == 0) { |
|
4831 /* If Master/Slave config fault is asserted twice, |
|
4832 * we assume back-to-back */ |
|
4833 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
|
4834 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4835 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
|
4836 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4837 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4838 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4839 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4840 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, |
|
4841 phy_ctrl); |
|
4842 adapter->smartspeed++; |
|
4843 if (!e1000_phy_setup_autoneg(&adapter->hw) && |
|
4844 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
|
4845 &phy_ctrl)) { |
|
4846 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4847 MII_CR_RESTART_AUTO_NEG); |
|
4848 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, |
|
4849 phy_ctrl); |
|
4850 } |
|
4851 } |
|
4852 return; |
|
4853 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4854 /* If still no link, perhaps using 2/3 pair cable */ |
|
4855 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4856 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4857 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); |
|
4858 if (!e1000_phy_setup_autoneg(&adapter->hw) && |
|
4859 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
|
4860 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4861 MII_CR_RESTART_AUTO_NEG); |
|
4862 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); |
|
4863 } |
|
4864 } |
|
4865 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4866 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4867 adapter->smartspeed = 0; |
|
4868 } |
|
4869 |
|
4870 /** |
|
4871 * e1000_ioctl - |
|
4872 * @netdev: |
|
4873 * @ifreq: |
|
4874 * @cmd: |
|
4875 **/ |
|
4876 |
|
4877 static int |
|
4878 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4879 { |
|
4880 switch (cmd) { |
|
4881 case SIOCGMIIPHY: |
|
4882 case SIOCGMIIREG: |
|
4883 case SIOCSMIIREG: |
|
4884 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4885 default: |
|
4886 return -EOPNOTSUPP; |
|
4887 } |
|
4888 } |
|
4889 |
|
4890 /** |
|
4891 * e1000_mii_ioctl - |
|
4892 * @netdev: |
|
4893 * @ifreq: |
|
4894 * @cmd: |
|
4895 **/ |
|
4896 |
|
4897 static int |
|
4898 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4899 { |
|
4900 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4901 struct mii_ioctl_data *data = if_mii(ifr); |
|
4902 int retval; |
|
4903 uint16_t mii_reg; |
|
4904 uint16_t spddplx; |
|
4905 unsigned long flags; |
|
4906 |
|
4907 if (adapter->hw.media_type != e1000_media_type_copper) |
|
4908 return -EOPNOTSUPP; |
|
4909 |
|
4910 switch (cmd) { |
|
4911 case SIOCGMIIPHY: |
|
4912 data->phy_id = adapter->hw.phy_addr; |
|
4913 break; |
|
4914 case SIOCGMIIREG: |
|
4915 if (adapter->ecdev || !capable(CAP_NET_ADMIN)) |
|
4916 return -EPERM; |
|
4917 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4918 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
|
4919 &data->val_out)) { |
|
4920 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4921 return -EIO; |
|
4922 } |
|
4923 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4924 break; |
|
4925 case SIOCSMIIREG: |
|
4926 if (adapter->ecdev || !capable(CAP_NET_ADMIN)) |
|
4927 return -EPERM; |
|
4928 if (data->reg_num & ~(0x1F)) |
|
4929 return -EFAULT; |
|
4930 mii_reg = data->val_in; |
|
4931 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4932 if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
|
4933 mii_reg)) { |
|
4934 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4935 return -EIO; |
|
4936 } |
|
4937 if (adapter->hw.media_type == e1000_media_type_copper) { |
|
4938 switch (data->reg_num) { |
|
4939 case PHY_CTRL: |
|
4940 if (mii_reg & MII_CR_POWER_DOWN) |
|
4941 break; |
|
4942 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4943 adapter->hw.autoneg = 1; |
|
4944 adapter->hw.autoneg_advertised = 0x2F; |
|
4945 } else { |
|
4946 if (mii_reg & 0x40) |
|
4947 spddplx = SPEED_1000; |
|
4948 else if (mii_reg & 0x2000) |
|
4949 spddplx = SPEED_100; |
|
4950 else |
|
4951 spddplx = SPEED_10; |
|
4952 spddplx += (mii_reg & 0x100) |
|
4953 ? DUPLEX_FULL : |
|
4954 DUPLEX_HALF; |
|
4955 retval = e1000_set_spd_dplx(adapter, |
|
4956 spddplx); |
|
4957 if (retval) { |
|
4958 spin_unlock_irqrestore( |
|
4959 &adapter->stats_lock, |
|
4960 flags); |
|
4961 return retval; |
|
4962 } |
|
4963 } |
|
4964 if (netif_running(adapter->netdev)) |
|
4965 e1000_reinit_locked(adapter); |
|
4966 else |
|
4967 e1000_reset(adapter); |
|
4968 break; |
|
4969 case M88E1000_PHY_SPEC_CTRL: |
|
4970 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4971 if (e1000_phy_reset(&adapter->hw)) { |
|
4972 spin_unlock_irqrestore( |
|
4973 &adapter->stats_lock, flags); |
|
4974 return -EIO; |
|
4975 } |
|
4976 break; |
|
4977 } |
|
4978 } else { |
|
4979 switch (data->reg_num) { |
|
4980 case PHY_CTRL: |
|
4981 if (mii_reg & MII_CR_POWER_DOWN) |
|
4982 break; |
|
4983 if (netif_running(adapter->netdev)) |
|
4984 e1000_reinit_locked(adapter); |
|
4985 else |
|
4986 e1000_reset(adapter); |
|
4987 break; |
|
4988 } |
|
4989 } |
|
4990 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4991 break; |
|
4992 default: |
|
4993 return -EOPNOTSUPP; |
|
4994 } |
|
4995 return E1000_SUCCESS; |
|
4996 } |
|
4997 |
|
4998 void |
|
4999 e1000_pci_set_mwi(struct e1000_hw *hw) |
|
5000 { |
|
5001 struct e1000_adapter *adapter = hw->back; |
|
5002 int ret_val = pci_set_mwi(adapter->pdev); |
|
5003 |
|
5004 if (ret_val) |
|
5005 DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
|
5006 } |
|
5007 |
|
5008 void |
|
5009 e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
5010 { |
|
5011 struct e1000_adapter *adapter = hw->back; |
|
5012 |
|
5013 pci_clear_mwi(adapter->pdev); |
|
5014 } |
|
5015 |
|
5016 void |
|
5017 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) |
|
5018 { |
|
5019 struct e1000_adapter *adapter = hw->back; |
|
5020 |
|
5021 pci_read_config_word(adapter->pdev, reg, value); |
|
5022 } |
|
5023 |
|
5024 void |
|
5025 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) |
|
5026 { |
|
5027 struct e1000_adapter *adapter = hw->back; |
|
5028 |
|
5029 pci_write_config_word(adapter->pdev, reg, *value); |
|
5030 } |
|
5031 |
|
5032 int32_t |
|
5033 e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) |
|
5034 { |
|
5035 struct e1000_adapter *adapter = hw->back; |
|
5036 uint16_t cap_offset; |
|
5037 |
|
5038 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); |
|
5039 if (!cap_offset) |
|
5040 return -E1000_ERR_CONFIG; |
|
5041 |
|
5042 pci_read_config_word(adapter->pdev, cap_offset + reg, value); |
|
5043 |
|
5044 return E1000_SUCCESS; |
|
5045 } |
|
5046 |
|
5047 void |
|
5048 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) |
|
5049 { |
|
5050 outl(value, port); |
|
5051 } |
|
5052 |
|
5053 static void |
|
5054 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) |
|
5055 { |
|
5056 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5057 uint32_t ctrl, rctl; |
|
5058 |
|
5059 e1000_irq_disable(adapter); |
|
5060 adapter->vlgrp = grp; |
|
5061 |
|
5062 if (grp) { |
|
5063 /* enable VLAN tag insert/strip */ |
|
5064 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
5065 ctrl |= E1000_CTRL_VME; |
|
5066 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
5067 |
|
5068 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
5069 /* enable VLAN receive filtering */ |
|
5070 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
5071 rctl |= E1000_RCTL_VFE; |
|
5072 rctl &= ~E1000_RCTL_CFIEN; |
|
5073 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
5074 e1000_update_mng_vlan(adapter); |
|
5075 } |
|
5076 } else { |
|
5077 /* disable VLAN tag insert/strip */ |
|
5078 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
5079 ctrl &= ~E1000_CTRL_VME; |
|
5080 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
5081 |
|
5082 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
5083 /* disable VLAN filtering */ |
|
5084 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
5085 rctl &= ~E1000_RCTL_VFE; |
|
5086 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
5087 if (adapter->mng_vlan_id != |
|
5088 (uint16_t)E1000_MNG_VLAN_NONE) { |
|
5089 e1000_vlan_rx_kill_vid(netdev, |
|
5090 adapter->mng_vlan_id); |
|
5091 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
5092 } |
|
5093 } |
|
5094 } |
|
5095 |
|
5096 e1000_irq_enable(adapter); |
|
5097 } |
|
5098 |
|
5099 static void |
|
5100 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) |
|
5101 { |
|
5102 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5103 uint32_t vfta, index; |
|
5104 |
|
5105 if ((adapter->hw.mng_cookie.status & |
|
5106 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
5107 (vid == adapter->mng_vlan_id)) |
|
5108 return; |
|
5109 /* add VID to filter table */ |
|
5110 index = (vid >> 5) & 0x7F; |
|
5111 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); |
|
5112 vfta |= (1 << (vid & 0x1F)); |
|
5113 e1000_write_vfta(&adapter->hw, index, vfta); |
|
5114 } |
|
5115 |
|
5116 static void |
|
5117 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) |
|
5118 { |
|
5119 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5120 uint32_t vfta, index; |
|
5121 |
|
5122 e1000_irq_disable(adapter); |
|
5123 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
5124 e1000_irq_enable(adapter); |
|
5125 |
|
5126 if ((adapter->hw.mng_cookie.status & |
|
5127 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
5128 (vid == adapter->mng_vlan_id)) { |
|
5129 /* release control to f/w */ |
|
5130 e1000_release_hw_control(adapter); |
|
5131 return; |
|
5132 } |
|
5133 |
|
5134 /* remove VID from filter table */ |
|
5135 index = (vid >> 5) & 0x7F; |
|
5136 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); |
|
5137 vfta &= ~(1 << (vid & 0x1F)); |
|
5138 e1000_write_vfta(&adapter->hw, index, vfta); |
|
5139 } |
|
5140 |
|
5141 static void |
|
5142 e1000_restore_vlan(struct e1000_adapter *adapter) |
|
5143 { |
|
5144 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
5145 |
|
5146 if (adapter->vlgrp) { |
|
5147 uint16_t vid; |
|
5148 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
|
5149 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
5150 continue; |
|
5151 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
5152 } |
|
5153 } |
|
5154 } |
|
5155 |
|
5156 int |
|
5157 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) |
|
5158 { |
|
5159 adapter->hw.autoneg = 0; |
|
5160 |
|
5161 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
5162 if ((adapter->hw.media_type == e1000_media_type_fiber) && |
|
5163 spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
|
5164 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
5165 return -EINVAL; |
|
5166 } |
|
5167 |
|
5168 switch (spddplx) { |
|
5169 case SPEED_10 + DUPLEX_HALF: |
|
5170 adapter->hw.forced_speed_duplex = e1000_10_half; |
|
5171 break; |
|
5172 case SPEED_10 + DUPLEX_FULL: |
|
5173 adapter->hw.forced_speed_duplex = e1000_10_full; |
|
5174 break; |
|
5175 case SPEED_100 + DUPLEX_HALF: |
|
5176 adapter->hw.forced_speed_duplex = e1000_100_half; |
|
5177 break; |
|
5178 case SPEED_100 + DUPLEX_FULL: |
|
5179 adapter->hw.forced_speed_duplex = e1000_100_full; |
|
5180 break; |
|
5181 case SPEED_1000 + DUPLEX_FULL: |
|
5182 adapter->hw.autoneg = 1; |
|
5183 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; |
|
5184 break; |
|
5185 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
5186 default: |
|
5187 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
5188 return -EINVAL; |
|
5189 } |
|
5190 return 0; |
|
5191 } |
|
5192 |
|
5193 static int |
|
5194 e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
5195 { |
|
5196 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5197 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5198 uint32_t ctrl, ctrl_ext, rctl, status; |
|
5199 uint32_t wufc = adapter->wol; |
|
5200 #ifdef CONFIG_PM |
|
5201 int retval = 0; |
|
5202 #endif |
|
5203 |
|
5204 if (adapter->ecdev) |
|
5205 return -EBUSY; |
|
5206 |
|
5207 netif_device_detach(netdev); |
|
5208 |
|
5209 if (netif_running(netdev)) { |
|
5210 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
5211 e1000_down(adapter); |
|
5212 } |
|
5213 |
|
5214 #ifdef CONFIG_PM |
|
5215 retval = pci_save_state(pdev); |
|
5216 if (retval) |
|
5217 return retval; |
|
5218 #endif |
|
5219 |
|
5220 status = E1000_READ_REG(&adapter->hw, STATUS); |
|
5221 if (status & E1000_STATUS_LU) |
|
5222 wufc &= ~E1000_WUFC_LNKC; |
|
5223 |
|
5224 if (wufc) { |
|
5225 e1000_setup_rctl(adapter); |
|
5226 e1000_set_multi(netdev); |
|
5227 |
|
5228 /* turn on all-multi mode if wake on multicast is enabled */ |
|
5229 if (wufc & E1000_WUFC_MC) { |
|
5230 rctl = E1000_READ_REG(&adapter->hw, RCTL); |
|
5231 rctl |= E1000_RCTL_MPE; |
|
5232 E1000_WRITE_REG(&adapter->hw, RCTL, rctl); |
|
5233 } |
|
5234 |
|
5235 if (adapter->hw.mac_type >= e1000_82540) { |
|
5236 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
|
5237 /* advertise wake from D3Cold */ |
|
5238 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
5239 /* phy power management enable */ |
|
5240 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
5241 ctrl |= E1000_CTRL_ADVD3WUC | |
|
5242 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
5243 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); |
|
5244 } |
|
5245 |
|
5246 if (adapter->hw.media_type == e1000_media_type_fiber || |
|
5247 adapter->hw.media_type == e1000_media_type_internal_serdes) { |
|
5248 /* keep the laser running in D3 */ |
|
5249 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
|
5250 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
5251 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); |
|
5252 } |
|
5253 |
|
5254 /* Allow time for pending master requests to run */ |
|
5255 e1000_disable_pciex_master(&adapter->hw); |
|
5256 |
|
5257 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
|
5258 E1000_WRITE_REG(&adapter->hw, WUFC, wufc); |
|
5259 pci_enable_wake(pdev, PCI_D3hot, 1); |
|
5260 pci_enable_wake(pdev, PCI_D3cold, 1); |
|
5261 } else { |
|
5262 E1000_WRITE_REG(&adapter->hw, WUC, 0); |
|
5263 E1000_WRITE_REG(&adapter->hw, WUFC, 0); |
|
5264 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5265 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5266 } |
|
5267 |
|
5268 e1000_release_manageability(adapter); |
|
5269 |
|
5270 /* make sure adapter isn't asleep if manageability is enabled */ |
|
5271 if (adapter->en_mng_pt) { |
|
5272 pci_enable_wake(pdev, PCI_D3hot, 1); |
|
5273 pci_enable_wake(pdev, PCI_D3cold, 1); |
|
5274 } |
|
5275 |
|
5276 if (adapter->hw.phy_type == e1000_phy_igp_3) |
|
5277 e1000_phy_powerdown_workaround(&adapter->hw); |
|
5278 |
|
5279 if (netif_running(netdev)) |
|
5280 e1000_free_irq(adapter); |
|
5281 |
|
5282 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
5283 * would have already happened in close and is redundant. */ |
|
5284 e1000_release_hw_control(adapter); |
|
5285 |
|
5286 pci_disable_device(pdev); |
|
5287 |
|
5288 pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
|
5289 |
|
5290 return 0; |
|
5291 } |
|
5292 |
|
5293 #ifdef CONFIG_PM |
|
5294 static int |
|
5295 e1000_resume(struct pci_dev *pdev) |
|
5296 { |
|
5297 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5298 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5299 uint32_t err; |
|
5300 |
|
5301 if (adapter->ecdev) |
|
5302 return -EBUSY; |
|
5303 |
|
5304 pci_set_power_state(pdev, PCI_D0); |
|
5305 pci_restore_state(pdev); |
|
5306 if ((err = pci_enable_device(pdev))) { |
|
5307 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); |
|
5308 return err; |
|
5309 } |
|
5310 pci_set_master(pdev); |
|
5311 |
|
5312 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5313 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5314 |
|
5315 if (netif_running(netdev) && (err = e1000_request_irq(adapter))) |
|
5316 return err; |
|
5317 |
|
5318 e1000_power_up_phy(adapter); |
|
5319 e1000_reset(adapter); |
|
5320 E1000_WRITE_REG(&adapter->hw, WUS, ~0); |
|
5321 |
|
5322 e1000_init_manageability(adapter); |
|
5323 |
|
5324 if (netif_running(netdev)) |
|
5325 e1000_up(adapter); |
|
5326 |
|
5327 if (!adapter->ecdev) netif_device_attach(netdev); |
|
5328 |
|
5329 /* If the controller is 82573 and f/w is AMT, do not set |
|
5330 * DRV_LOAD until the interface is up. For all other cases, |
|
5331 * let the f/w know that the h/w is now under the control |
|
5332 * of the driver. */ |
|
5333 if (adapter->hw.mac_type != e1000_82573 || |
|
5334 !e1000_check_mng_mode(&adapter->hw)) |
|
5335 e1000_get_hw_control(adapter); |
|
5336 |
|
5337 return 0; |
|
5338 } |
|
5339 #endif |
|
5340 |
|
5341 static void e1000_shutdown(struct pci_dev *pdev) |
|
5342 { |
|
5343 e1000_suspend(pdev, PMSG_SUSPEND); |
|
5344 } |
|
5345 |
|
5346 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
5347 /* |
|
5348 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
5349 * without having to re-enable interrupts. It's not called while |
|
5350 * the interrupt routine is executing. |
|
5351 */ |
|
5352 static void |
|
5353 e1000_netpoll(struct net_device *netdev) |
|
5354 { |
|
5355 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5356 |
|
5357 disable_irq(adapter->pdev->irq); |
|
5358 e1000_intr(adapter->pdev->irq, netdev); |
|
5359 e1000_clean_tx_irq(adapter, adapter->tx_ring); |
|
5360 #ifndef CONFIG_E1000_NAPI |
|
5361 adapter->clean_rx(adapter, adapter->rx_ring); |
|
5362 #endif |
|
5363 enable_irq(adapter->pdev->irq); |
|
5364 } |
|
5365 #endif |
|
5366 |
|
5367 /** |
|
5368 * e1000_io_error_detected - called when PCI error is detected |
|
5369 * @pdev: Pointer to PCI device |
|
5370 * @state: The current pci conneection state |
|
5371 * |
|
5372 * This function is called after a PCI bus error affecting |
|
5373 * this device has been detected. |
|
5374 */ |
|
5375 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) |
|
5376 { |
|
5377 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5378 struct e1000_adapter *adapter = netdev->priv; |
|
5379 |
|
5380 netif_device_detach(netdev); |
|
5381 |
|
5382 if (netif_running(netdev)) |
|
5383 e1000_down(adapter); |
|
5384 pci_disable_device(pdev); |
|
5385 |
|
5386 /* Request a slot slot reset. */ |
|
5387 return PCI_ERS_RESULT_NEED_RESET; |
|
5388 } |
|
5389 |
|
5390 /** |
|
5391 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
5392 * @pdev: Pointer to PCI device |
|
5393 * |
|
5394 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
5395 * resembles the first-half of the e1000_resume routine. |
|
5396 */ |
|
5397 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
5398 { |
|
5399 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5400 struct e1000_adapter *adapter = netdev->priv; |
|
5401 |
|
5402 if (pci_enable_device(pdev)) { |
|
5403 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); |
|
5404 return PCI_ERS_RESULT_DISCONNECT; |
|
5405 } |
|
5406 pci_set_master(pdev); |
|
5407 |
|
5408 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5409 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5410 |
|
5411 e1000_reset(adapter); |
|
5412 E1000_WRITE_REG(&adapter->hw, WUS, ~0); |
|
5413 |
|
5414 return PCI_ERS_RESULT_RECOVERED; |
|
5415 } |
|
5416 |
|
5417 /** |
|
5418 * e1000_io_resume - called when traffic can start flowing again. |
|
5419 * @pdev: Pointer to PCI device |
|
5420 * |
|
5421 * This callback is called when the error recovery driver tells us that |
|
5422 * its OK to resume normal operation. Implementation resembles the |
|
5423 * second-half of the e1000_resume routine. |
|
5424 */ |
|
5425 static void e1000_io_resume(struct pci_dev *pdev) |
|
5426 { |
|
5427 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5428 struct e1000_adapter *adapter = netdev->priv; |
|
5429 |
|
5430 e1000_init_manageability(adapter); |
|
5431 |
|
5432 if (netif_running(netdev)) { |
|
5433 if (e1000_up(adapter)) { |
|
5434 printk("e1000: can't bring device back up after reset\n"); |
|
5435 return; |
|
5436 } |
|
5437 } |
|
5438 |
|
5439 netif_device_attach(netdev); |
|
5440 |
|
5441 /* If the controller is 82573 and f/w is AMT, do not set |
|
5442 * DRV_LOAD until the interface is up. For all other cases, |
|
5443 * let the f/w know that the h/w is now under the control |
|
5444 * of the driver. */ |
|
5445 if (adapter->hw.mac_type != e1000_82573 || |
|
5446 !e1000_check_mng_mode(&adapter->hw)) |
|
5447 e1000_get_hw_control(adapter); |
|
5448 |
|
5449 } |
|
5450 |
|
5451 /* e1000_main.c */ |