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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 vim: noexpandtab |
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28 |
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29 *******************************************************************************/ |
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30 |
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31 #include "e1000-2.6.37-ethercat.h" |
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32 #include <net/ip6_checksum.h> |
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33 |
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34 char e1000_driver_name[] = "ec_e1000"; |
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35 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
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36 #define DRV_VERSION "7.3.21-k8-NAPI" |
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37 const char e1000_driver_version[] = DRV_VERSION; |
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38 static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
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39 |
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40 /* e1000_pci_tbl - PCI Device ID Table |
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41 * |
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42 * Last entry must be all 0s |
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43 * |
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44 * Macro expands to... |
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45 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} |
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46 */ |
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47 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
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48 INTEL_E1000_ETHERNET_DEVICE(0x1000), |
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49 INTEL_E1000_ETHERNET_DEVICE(0x1001), |
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50 INTEL_E1000_ETHERNET_DEVICE(0x1004), |
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51 INTEL_E1000_ETHERNET_DEVICE(0x1008), |
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52 INTEL_E1000_ETHERNET_DEVICE(0x1009), |
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53 INTEL_E1000_ETHERNET_DEVICE(0x100C), |
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54 INTEL_E1000_ETHERNET_DEVICE(0x100D), |
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55 INTEL_E1000_ETHERNET_DEVICE(0x100E), |
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56 INTEL_E1000_ETHERNET_DEVICE(0x100F), |
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57 INTEL_E1000_ETHERNET_DEVICE(0x1010), |
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58 INTEL_E1000_ETHERNET_DEVICE(0x1011), |
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59 INTEL_E1000_ETHERNET_DEVICE(0x1012), |
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60 INTEL_E1000_ETHERNET_DEVICE(0x1013), |
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61 INTEL_E1000_ETHERNET_DEVICE(0x1014), |
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62 INTEL_E1000_ETHERNET_DEVICE(0x1015), |
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63 INTEL_E1000_ETHERNET_DEVICE(0x1016), |
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64 INTEL_E1000_ETHERNET_DEVICE(0x1017), |
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65 INTEL_E1000_ETHERNET_DEVICE(0x1018), |
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66 INTEL_E1000_ETHERNET_DEVICE(0x1019), |
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67 INTEL_E1000_ETHERNET_DEVICE(0x101A), |
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68 INTEL_E1000_ETHERNET_DEVICE(0x101D), |
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69 INTEL_E1000_ETHERNET_DEVICE(0x101E), |
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70 INTEL_E1000_ETHERNET_DEVICE(0x1026), |
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71 INTEL_E1000_ETHERNET_DEVICE(0x1027), |
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72 INTEL_E1000_ETHERNET_DEVICE(0x1028), |
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73 INTEL_E1000_ETHERNET_DEVICE(0x1075), |
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74 INTEL_E1000_ETHERNET_DEVICE(0x1076), |
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75 INTEL_E1000_ETHERNET_DEVICE(0x1077), |
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76 INTEL_E1000_ETHERNET_DEVICE(0x1078), |
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77 INTEL_E1000_ETHERNET_DEVICE(0x1079), |
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78 INTEL_E1000_ETHERNET_DEVICE(0x107A), |
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79 INTEL_E1000_ETHERNET_DEVICE(0x107B), |
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80 INTEL_E1000_ETHERNET_DEVICE(0x107C), |
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81 INTEL_E1000_ETHERNET_DEVICE(0x108A), |
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82 INTEL_E1000_ETHERNET_DEVICE(0x1099), |
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83 INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
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84 /* required last entry */ |
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85 {0,} |
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86 }; |
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87 |
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88 // do not auto-load driver |
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89 // MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
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90 |
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91 int e1000_up(struct e1000_adapter *adapter); |
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92 void e1000_down(struct e1000_adapter *adapter); |
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93 void e1000_reinit_locked(struct e1000_adapter *adapter); |
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94 void e1000_reset(struct e1000_adapter *adapter); |
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95 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx); |
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96 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
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97 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); |
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98 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); |
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99 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); |
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100 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
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101 struct e1000_tx_ring *txdr); |
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102 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
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103 struct e1000_rx_ring *rxdr); |
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104 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
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105 struct e1000_tx_ring *tx_ring); |
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106 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
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107 struct e1000_rx_ring *rx_ring); |
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108 void e1000_update_stats(struct e1000_adapter *adapter); |
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109 |
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110 static int e1000_init_module(void); |
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111 static void e1000_exit_module(void); |
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112 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
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113 static void __devexit e1000_remove(struct pci_dev *pdev); |
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114 static int e1000_alloc_queues(struct e1000_adapter *adapter); |
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115 static int e1000_sw_init(struct e1000_adapter *adapter); |
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116 static int e1000_open(struct net_device *netdev); |
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117 static int e1000_close(struct net_device *netdev); |
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118 static void e1000_configure_tx(struct e1000_adapter *adapter); |
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119 static void e1000_configure_rx(struct e1000_adapter *adapter); |
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120 static void e1000_setup_rctl(struct e1000_adapter *adapter); |
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121 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
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122 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); |
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123 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
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124 struct e1000_tx_ring *tx_ring); |
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125 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
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126 struct e1000_rx_ring *rx_ring); |
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127 static void e1000_set_rx_mode(struct net_device *netdev); |
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128 static void e1000_update_phy_info(unsigned long data); |
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129 static void e1000_update_phy_info_task(struct work_struct *work); |
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130 static void e1000_watchdog(unsigned long data); |
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131 static void e1000_82547_tx_fifo_stall(unsigned long data); |
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132 static void e1000_82547_tx_fifo_stall_task(struct work_struct *work); |
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133 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
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134 struct net_device *netdev); |
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135 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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136 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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137 static int e1000_set_mac(struct net_device *netdev, void *p); |
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138 void ec_poll(struct net_device *); |
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139 static irqreturn_t e1000_intr(int irq, void *data); |
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140 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
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141 struct e1000_tx_ring *tx_ring); |
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142 static int e1000_clean(struct napi_struct *napi, int budget); |
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143 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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144 struct e1000_rx_ring *rx_ring, |
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145 int *work_done, int work_to_do); |
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146 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
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147 struct e1000_rx_ring *rx_ring, |
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148 int *work_done, int work_to_do); |
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149 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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150 struct e1000_rx_ring *rx_ring, |
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151 int cleaned_count); |
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152 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
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153 struct e1000_rx_ring *rx_ring, |
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154 int cleaned_count); |
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155 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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156 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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157 int cmd); |
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158 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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159 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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160 static void e1000_tx_timeout(struct net_device *dev); |
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161 static void e1000_reset_task(struct work_struct *work); |
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162 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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163 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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164 struct sk_buff *skb); |
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165 |
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166 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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167 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
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168 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); |
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169 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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170 |
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171 #ifdef CONFIG_PM |
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172 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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173 static int e1000_resume(struct pci_dev *pdev); |
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174 #endif |
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175 static void e1000_shutdown(struct pci_dev *pdev); |
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176 |
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177 #ifdef CONFIG_NET_POLL_CONTROLLER |
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178 /* for netdump / net console */ |
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179 static void e1000_netpoll (struct net_device *netdev); |
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180 #endif |
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181 |
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182 #define COPYBREAK_DEFAULT 256 |
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183 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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184 module_param(copybreak, uint, 0644); |
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185 MODULE_PARM_DESC(copybreak, |
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186 "Maximum size of packet that is copied to a new buffer on receive"); |
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187 |
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188 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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189 pci_channel_state_t state); |
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190 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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191 static void e1000_io_resume(struct pci_dev *pdev); |
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192 |
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193 static struct pci_error_handlers e1000_err_handler = { |
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194 .error_detected = e1000_io_error_detected, |
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195 .slot_reset = e1000_io_slot_reset, |
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196 .resume = e1000_io_resume, |
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197 }; |
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198 |
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199 static struct pci_driver e1000_driver = { |
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200 .name = e1000_driver_name, |
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201 .id_table = e1000_pci_tbl, |
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202 .probe = e1000_probe, |
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203 .remove = __devexit_p(e1000_remove), |
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204 #ifdef CONFIG_PM |
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205 /* Power Managment Hooks */ |
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206 .suspend = e1000_suspend, |
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207 .resume = e1000_resume, |
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208 #endif |
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209 .shutdown = e1000_shutdown, |
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210 .err_handler = &e1000_err_handler |
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211 }; |
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212 |
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213 MODULE_AUTHOR("Florian Pose <fp@igh-essen.com>"); |
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214 MODULE_DESCRIPTION("EtherCAT-capable Intel(R) PRO/1000 Network Driver"); |
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215 MODULE_LICENSE("GPL"); |
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216 MODULE_VERSION(DRV_VERSION); |
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217 |
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218 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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219 module_param(debug, int, 0); |
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220 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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221 |
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222 /** |
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223 * e1000_get_hw_dev - return device |
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224 * used by hardware layer to print debugging information |
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225 * |
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226 **/ |
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227 struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) |
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228 { |
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229 struct e1000_adapter *adapter = hw->back; |
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230 return adapter->netdev; |
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231 } |
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232 |
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233 /** |
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234 * e1000_init_module - Driver Registration Routine |
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235 * |
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236 * e1000_init_module is the first routine called when the driver is |
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237 * loaded. All it does is register with the PCI subsystem. |
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238 **/ |
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239 |
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240 static int __init e1000_init_module(void) |
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241 { |
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242 int ret; |
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243 pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version); |
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244 |
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245 pr_info("%s\n", e1000_copyright); |
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246 |
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247 ret = pci_register_driver(&e1000_driver); |
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248 if (copybreak != COPYBREAK_DEFAULT) { |
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249 if (copybreak == 0) |
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250 pr_info("copybreak disabled\n"); |
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251 else |
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252 pr_info("copybreak enabled for " |
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253 "packets <= %u bytes\n", copybreak); |
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254 } |
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255 return ret; |
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256 } |
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257 |
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258 module_init(e1000_init_module); |
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259 |
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260 /** |
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261 * e1000_exit_module - Driver Exit Cleanup Routine |
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262 * |
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263 * e1000_exit_module is called just before the driver is removed |
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264 * from memory. |
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265 **/ |
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266 |
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267 static void __exit e1000_exit_module(void) |
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268 { |
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269 pci_unregister_driver(&e1000_driver); |
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270 } |
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271 |
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272 module_exit(e1000_exit_module); |
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273 |
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274 static int e1000_request_irq(struct e1000_adapter *adapter) |
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275 { |
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276 struct net_device *netdev = adapter->netdev; |
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277 irq_handler_t handler = e1000_intr; |
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278 int irq_flags = IRQF_SHARED; |
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279 int err; |
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280 |
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281 if (adapter->ecdev) |
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282 return 0; |
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283 |
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284 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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285 netdev); |
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286 if (err) { |
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287 e_err(probe, "Unable to allocate interrupt Error: %d\n", err); |
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288 } |
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289 |
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290 return err; |
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291 } |
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292 |
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293 static void e1000_free_irq(struct e1000_adapter *adapter) |
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294 { |
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295 struct net_device *netdev = adapter->netdev; |
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296 |
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297 if (adapter->ecdev) |
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298 return; |
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299 |
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300 free_irq(adapter->pdev->irq, netdev); |
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301 } |
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302 |
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303 /** |
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304 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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305 * @adapter: board private structure |
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306 **/ |
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307 |
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308 static void e1000_irq_disable(struct e1000_adapter *adapter) |
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309 { |
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310 struct e1000_hw *hw = &adapter->hw; |
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311 |
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312 if (adapter->ecdev) |
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313 return; |
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314 |
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315 ew32(IMC, ~0); |
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316 E1000_WRITE_FLUSH(); |
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317 synchronize_irq(adapter->pdev->irq); |
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318 } |
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319 |
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320 /** |
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321 * e1000_irq_enable - Enable default interrupt generation settings |
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322 * @adapter: board private structure |
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323 **/ |
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324 |
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325 static void e1000_irq_enable(struct e1000_adapter *adapter) |
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326 { |
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327 struct e1000_hw *hw = &adapter->hw; |
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328 |
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329 if (adapter->ecdev) |
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330 return; |
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331 |
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332 ew32(IMS, IMS_ENABLE_MASK); |
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333 E1000_WRITE_FLUSH(); |
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334 } |
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335 |
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336 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
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337 { |
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338 struct e1000_hw *hw = &adapter->hw; |
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339 struct net_device *netdev = adapter->netdev; |
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340 u16 vid = hw->mng_cookie.vlan_id; |
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341 u16 old_vid = adapter->mng_vlan_id; |
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342 if (adapter->vlgrp) { |
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343 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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344 if (hw->mng_cookie.status & |
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345 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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346 e1000_vlan_rx_add_vid(netdev, vid); |
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347 adapter->mng_vlan_id = vid; |
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348 } else |
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349 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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350 |
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351 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
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352 (vid != old_vid) && |
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353 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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354 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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355 } else |
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356 adapter->mng_vlan_id = vid; |
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357 } |
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358 } |
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359 |
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360 static void e1000_init_manageability(struct e1000_adapter *adapter) |
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361 { |
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362 struct e1000_hw *hw = &adapter->hw; |
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363 |
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364 if (adapter->en_mng_pt) { |
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365 u32 manc = er32(MANC); |
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366 |
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367 /* disable hardware interception of ARP */ |
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368 manc &= ~(E1000_MANC_ARP_EN); |
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369 |
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370 ew32(MANC, manc); |
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371 } |
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372 } |
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373 |
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374 static void e1000_release_manageability(struct e1000_adapter *adapter) |
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375 { |
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376 struct e1000_hw *hw = &adapter->hw; |
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377 |
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378 if (adapter->en_mng_pt) { |
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379 u32 manc = er32(MANC); |
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380 |
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381 /* re-enable hardware interception of ARP */ |
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382 manc |= E1000_MANC_ARP_EN; |
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383 |
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384 ew32(MANC, manc); |
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385 } |
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386 } |
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387 |
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388 /** |
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389 * e1000_configure - configure the hardware for RX and TX |
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390 * @adapter = private board structure |
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391 **/ |
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392 static void e1000_configure(struct e1000_adapter *adapter) |
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393 { |
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394 struct net_device *netdev = adapter->netdev; |
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395 int i; |
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396 |
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397 e1000_set_rx_mode(netdev); |
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398 |
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399 e1000_restore_vlan(adapter); |
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400 e1000_init_manageability(adapter); |
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401 |
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402 e1000_configure_tx(adapter); |
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403 e1000_setup_rctl(adapter); |
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404 e1000_configure_rx(adapter); |
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405 /* call E1000_DESC_UNUSED which always leaves |
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406 * at least 1 descriptor unused to make sure |
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407 * next_to_use != next_to_clean */ |
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408 for (i = 0; i < adapter->num_rx_queues; i++) { |
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409 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
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410 if (adapter->ecdev) { |
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411 /* fill rx ring completely! */ |
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412 adapter->alloc_rx_buf(adapter, ring, ring->count); |
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413 } else { |
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414 /* this one leaves the last ring element unallocated! */ |
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415 adapter->alloc_rx_buf(adapter, ring, |
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416 E1000_DESC_UNUSED(ring)); |
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417 } |
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418 } |
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419 } |
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420 |
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421 int e1000_up(struct e1000_adapter *adapter) |
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422 { |
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423 struct e1000_hw *hw = &adapter->hw; |
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424 |
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425 /* hardware has been reset, we need to reload some things */ |
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426 e1000_configure(adapter); |
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427 |
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428 clear_bit(__E1000_DOWN, &adapter->flags); |
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429 |
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430 if (!adapter->ecdev) { |
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431 napi_enable(&adapter->napi); |
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432 |
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433 e1000_irq_enable(adapter); |
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434 |
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435 netif_wake_queue(adapter->netdev); |
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436 |
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437 /* fire a link change interrupt to start the watchdog */ |
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438 ew32(ICS, E1000_ICS_LSC); |
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439 } |
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440 return 0; |
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441 } |
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442 |
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443 /** |
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444 * e1000_power_up_phy - restore link in case the phy was powered down |
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445 * @adapter: address of board private structure |
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446 * |
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447 * The phy may be powered down to save power and turn off link when the |
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448 * driver is unloaded and wake on lan is not enabled (among others) |
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449 * *** this routine MUST be followed by a call to e1000_reset *** |
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450 * |
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451 **/ |
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452 |
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453 void e1000_power_up_phy(struct e1000_adapter *adapter) |
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454 { |
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455 struct e1000_hw *hw = &adapter->hw; |
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456 u16 mii_reg = 0; |
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457 |
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458 /* Just clear the power down bit to wake the phy back up */ |
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459 if (hw->media_type == e1000_media_type_copper) { |
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460 /* according to the manual, the phy will retain its |
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461 * settings across a power-down/up cycle */ |
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462 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
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463 mii_reg &= ~MII_CR_POWER_DOWN; |
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464 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
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465 } |
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466 } |
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467 |
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468 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
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469 { |
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470 struct e1000_hw *hw = &adapter->hw; |
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471 |
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472 /* Power down the PHY so no link is implied when interface is down * |
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473 * The PHY cannot be powered down if any of the following is true * |
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474 * (a) WoL is enabled |
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475 * (b) AMT is active |
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476 * (c) SoL/IDER session is active */ |
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477 if (!adapter->wol && hw->mac_type >= e1000_82540 && |
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478 hw->media_type == e1000_media_type_copper) { |
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479 u16 mii_reg = 0; |
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480 |
|
481 switch (hw->mac_type) { |
|
482 case e1000_82540: |
|
483 case e1000_82545: |
|
484 case e1000_82545_rev_3: |
|
485 case e1000_82546: |
|
486 case e1000_82546_rev_3: |
|
487 case e1000_82541: |
|
488 case e1000_82541_rev_2: |
|
489 case e1000_82547: |
|
490 case e1000_82547_rev_2: |
|
491 if (er32(MANC) & E1000_MANC_SMBUS_EN) |
|
492 goto out; |
|
493 break; |
|
494 default: |
|
495 goto out; |
|
496 } |
|
497 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
|
498 mii_reg |= MII_CR_POWER_DOWN; |
|
499 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
|
500 mdelay(1); |
|
501 } |
|
502 out: |
|
503 return; |
|
504 } |
|
505 |
|
506 void e1000_down(struct e1000_adapter *adapter) |
|
507 { |
|
508 struct e1000_hw *hw = &adapter->hw; |
|
509 struct net_device *netdev = adapter->netdev; |
|
510 u32 rctl, tctl; |
|
511 |
|
512 |
|
513 /* disable receives in the hardware */ |
|
514 rctl = er32(RCTL); |
|
515 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
516 |
|
517 if (!adapter->ecdev) { |
|
518 /* flush and sleep below */ |
|
519 netif_tx_disable(netdev); |
|
520 } |
|
521 |
|
522 /* disable transmits in the hardware */ |
|
523 tctl = er32(TCTL); |
|
524 tctl &= ~E1000_TCTL_EN; |
|
525 ew32(TCTL, tctl); |
|
526 /* flush both disables and wait for them to finish */ |
|
527 E1000_WRITE_FLUSH(); |
|
528 msleep(10); |
|
529 |
|
530 if (!adapter->ecdev) { |
|
531 napi_disable(&adapter->napi); |
|
532 |
|
533 e1000_irq_disable(adapter); |
|
534 } |
|
535 |
|
536 /* |
|
537 * Setting DOWN must be after irq_disable to prevent |
|
538 * a screaming interrupt. Setting DOWN also prevents |
|
539 * timers and tasks from rescheduling. |
|
540 */ |
|
541 set_bit(__E1000_DOWN, &adapter->flags); |
|
542 |
|
543 if (!adapter->ecdev) { |
|
544 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
545 del_timer_sync(&adapter->watchdog_timer); |
|
546 del_timer_sync(&adapter->phy_info_timer); |
|
547 } |
|
548 |
|
549 adapter->link_speed = 0; |
|
550 adapter->link_duplex = 0; |
|
551 if (!adapter->ecdev) { |
|
552 netif_carrier_off(netdev); |
|
553 } |
|
554 |
|
555 e1000_reset(adapter); |
|
556 e1000_clean_all_tx_rings(adapter); |
|
557 e1000_clean_all_rx_rings(adapter); |
|
558 } |
|
559 |
|
560 static void e1000_reinit_safe(struct e1000_adapter *adapter) |
|
561 { |
|
562 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
563 msleep(1); |
|
564 rtnl_lock(); |
|
565 e1000_down(adapter); |
|
566 e1000_up(adapter); |
|
567 rtnl_unlock(); |
|
568 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
569 } |
|
570 |
|
571 void e1000_reinit_locked(struct e1000_adapter *adapter) |
|
572 { |
|
573 /* if rtnl_lock is not held the call path is bogus */ |
|
574 ASSERT_RTNL(); |
|
575 WARN_ON(in_interrupt()); |
|
576 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
577 msleep(1); |
|
578 e1000_down(adapter); |
|
579 e1000_up(adapter); |
|
580 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
581 } |
|
582 |
|
583 void e1000_reset(struct e1000_adapter *adapter) |
|
584 { |
|
585 struct e1000_hw *hw = &adapter->hw; |
|
586 u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
|
587 bool legacy_pba_adjust = false; |
|
588 u16 hwm; |
|
589 |
|
590 /* Repartition Pba for greater than 9k mtu |
|
591 * To take effect CTRL.RST is required. |
|
592 */ |
|
593 |
|
594 switch (hw->mac_type) { |
|
595 case e1000_82542_rev2_0: |
|
596 case e1000_82542_rev2_1: |
|
597 case e1000_82543: |
|
598 case e1000_82544: |
|
599 case e1000_82540: |
|
600 case e1000_82541: |
|
601 case e1000_82541_rev_2: |
|
602 legacy_pba_adjust = true; |
|
603 pba = E1000_PBA_48K; |
|
604 break; |
|
605 case e1000_82545: |
|
606 case e1000_82545_rev_3: |
|
607 case e1000_82546: |
|
608 case e1000_82546_rev_3: |
|
609 pba = E1000_PBA_48K; |
|
610 break; |
|
611 case e1000_82547: |
|
612 case e1000_82547_rev_2: |
|
613 legacy_pba_adjust = true; |
|
614 pba = E1000_PBA_30K; |
|
615 break; |
|
616 case e1000_undefined: |
|
617 case e1000_num_macs: |
|
618 break; |
|
619 } |
|
620 |
|
621 if (legacy_pba_adjust) { |
|
622 if (hw->max_frame_size > E1000_RXBUFFER_8192) |
|
623 pba -= 8; /* allocate more FIFO for Tx */ |
|
624 |
|
625 if (hw->mac_type == e1000_82547) { |
|
626 adapter->tx_fifo_head = 0; |
|
627 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
628 adapter->tx_fifo_size = |
|
629 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
630 atomic_set(&adapter->tx_fifo_stall, 0); |
|
631 } |
|
632 } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
633 /* adjust PBA for jumbo frames */ |
|
634 ew32(PBA, pba); |
|
635 |
|
636 /* To maintain wire speed transmits, the Tx FIFO should be |
|
637 * large enough to accommodate two full transmit packets, |
|
638 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
639 * the Rx FIFO should be large enough to accommodate at least |
|
640 * one full receive packet and is similarly rounded up and |
|
641 * expressed in KB. */ |
|
642 pba = er32(PBA); |
|
643 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
644 tx_space = pba >> 16; |
|
645 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
646 pba &= 0xffff; |
|
647 /* |
|
648 * the tx fifo also stores 16 bytes of information about the tx |
|
649 * but don't include ethernet FCS because hardware appends it |
|
650 */ |
|
651 min_tx_space = (hw->max_frame_size + |
|
652 sizeof(struct e1000_tx_desc) - |
|
653 ETH_FCS_LEN) * 2; |
|
654 min_tx_space = ALIGN(min_tx_space, 1024); |
|
655 min_tx_space >>= 10; |
|
656 /* software strips receive CRC, so leave room for it */ |
|
657 min_rx_space = hw->max_frame_size; |
|
658 min_rx_space = ALIGN(min_rx_space, 1024); |
|
659 min_rx_space >>= 10; |
|
660 |
|
661 /* If current Tx allocation is less than the min Tx FIFO size, |
|
662 * and the min Tx FIFO size is less than the current Rx FIFO |
|
663 * allocation, take space away from current Rx allocation */ |
|
664 if (tx_space < min_tx_space && |
|
665 ((min_tx_space - tx_space) < pba)) { |
|
666 pba = pba - (min_tx_space - tx_space); |
|
667 |
|
668 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
669 switch (hw->mac_type) { |
|
670 case e1000_82545 ... e1000_82546_rev_3: |
|
671 pba &= ~(E1000_PBA_8K - 1); |
|
672 break; |
|
673 default: |
|
674 break; |
|
675 } |
|
676 |
|
677 /* if short on rx space, rx wins and must trump tx |
|
678 * adjustment or use Early Receive if available */ |
|
679 if (pba < min_rx_space) |
|
680 pba = min_rx_space; |
|
681 } |
|
682 } |
|
683 |
|
684 ew32(PBA, pba); |
|
685 |
|
686 /* |
|
687 * flow control settings: |
|
688 * The high water mark must be low enough to fit one full frame |
|
689 * (or the size used for early receive) above it in the Rx FIFO. |
|
690 * Set it to the lower of: |
|
691 * - 90% of the Rx FIFO size, and |
|
692 * - the full Rx FIFO size minus the early receive size (for parts |
|
693 * with ERT support assuming ERT set to E1000_ERT_2048), or |
|
694 * - the full Rx FIFO size minus one full frame |
|
695 */ |
|
696 hwm = min(((pba << 10) * 9 / 10), |
|
697 ((pba << 10) - hw->max_frame_size)); |
|
698 |
|
699 hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
|
700 hw->fc_low_water = hw->fc_high_water - 8; |
|
701 hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
|
702 hw->fc_send_xon = 1; |
|
703 hw->fc = hw->original_fc; |
|
704 |
|
705 /* Allow time for pending master requests to run */ |
|
706 e1000_reset_hw(hw); |
|
707 if (hw->mac_type >= e1000_82544) |
|
708 ew32(WUC, 0); |
|
709 |
|
710 if (e1000_init_hw(hw)) |
|
711 e_dev_err("Hardware Error\n"); |
|
712 e1000_update_mng_vlan(adapter); |
|
713 |
|
714 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
715 if (hw->mac_type >= e1000_82544 && |
|
716 hw->autoneg == 1 && |
|
717 hw->autoneg_advertised == ADVERTISE_1000_FULL) { |
|
718 u32 ctrl = er32(CTRL); |
|
719 /* clear phy power management bit if we are in gig only mode, |
|
720 * which if enabled will attempt negotiation to 100Mb, which |
|
721 * can cause a loss of link at power off or driver unload */ |
|
722 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
723 ew32(CTRL, ctrl); |
|
724 } |
|
725 |
|
726 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
727 ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
|
728 |
|
729 e1000_reset_adaptive(hw); |
|
730 e1000_phy_get_info(hw, &adapter->phy_info); |
|
731 |
|
732 e1000_release_manageability(adapter); |
|
733 } |
|
734 |
|
735 /** |
|
736 * Dump the eeprom for users having checksum issues |
|
737 **/ |
|
738 static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
|
739 { |
|
740 struct net_device *netdev = adapter->netdev; |
|
741 struct ethtool_eeprom eeprom; |
|
742 const struct ethtool_ops *ops = netdev->ethtool_ops; |
|
743 u8 *data; |
|
744 int i; |
|
745 u16 csum_old, csum_new = 0; |
|
746 |
|
747 eeprom.len = ops->get_eeprom_len(netdev); |
|
748 eeprom.offset = 0; |
|
749 |
|
750 data = kmalloc(eeprom.len, GFP_KERNEL); |
|
751 if (!data) { |
|
752 pr_err("Unable to allocate memory to dump EEPROM data\n"); |
|
753 return; |
|
754 } |
|
755 |
|
756 ops->get_eeprom(netdev, &eeprom, data); |
|
757 |
|
758 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + |
|
759 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); |
|
760 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) |
|
761 csum_new += data[i] + (data[i + 1] << 8); |
|
762 csum_new = EEPROM_SUM - csum_new; |
|
763 |
|
764 pr_err("/*********************/\n"); |
|
765 pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old); |
|
766 pr_err("Calculated : 0x%04x\n", csum_new); |
|
767 |
|
768 pr_err("Offset Values\n"); |
|
769 pr_err("======== ======\n"); |
|
770 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
|
771 |
|
772 pr_err("Include this output when contacting your support provider.\n"); |
|
773 pr_err("This is not a software error! Something bad happened to\n"); |
|
774 pr_err("your hardware or EEPROM image. Ignoring this problem could\n"); |
|
775 pr_err("result in further problems, possibly loss of data,\n"); |
|
776 pr_err("corruption or system hangs!\n"); |
|
777 pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n"); |
|
778 pr_err("which is invalid and requires you to set the proper MAC\n"); |
|
779 pr_err("address manually before continuing to enable this network\n"); |
|
780 pr_err("device. Please inspect the EEPROM dump and report the\n"); |
|
781 pr_err("issue to your hardware vendor or Intel Customer Support.\n"); |
|
782 pr_err("/*********************/\n"); |
|
783 |
|
784 kfree(data); |
|
785 } |
|
786 |
|
787 /** |
|
788 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not |
|
789 * @pdev: PCI device information struct |
|
790 * |
|
791 * Return true if an adapter needs ioport resources |
|
792 **/ |
|
793 static int e1000_is_need_ioport(struct pci_dev *pdev) |
|
794 { |
|
795 switch (pdev->device) { |
|
796 case E1000_DEV_ID_82540EM: |
|
797 case E1000_DEV_ID_82540EM_LOM: |
|
798 case E1000_DEV_ID_82540EP: |
|
799 case E1000_DEV_ID_82540EP_LOM: |
|
800 case E1000_DEV_ID_82540EP_LP: |
|
801 case E1000_DEV_ID_82541EI: |
|
802 case E1000_DEV_ID_82541EI_MOBILE: |
|
803 case E1000_DEV_ID_82541ER: |
|
804 case E1000_DEV_ID_82541ER_LOM: |
|
805 case E1000_DEV_ID_82541GI: |
|
806 case E1000_DEV_ID_82541GI_LF: |
|
807 case E1000_DEV_ID_82541GI_MOBILE: |
|
808 case E1000_DEV_ID_82544EI_COPPER: |
|
809 case E1000_DEV_ID_82544EI_FIBER: |
|
810 case E1000_DEV_ID_82544GC_COPPER: |
|
811 case E1000_DEV_ID_82544GC_LOM: |
|
812 case E1000_DEV_ID_82545EM_COPPER: |
|
813 case E1000_DEV_ID_82545EM_FIBER: |
|
814 case E1000_DEV_ID_82546EB_COPPER: |
|
815 case E1000_DEV_ID_82546EB_FIBER: |
|
816 case E1000_DEV_ID_82546EB_QUAD_COPPER: |
|
817 return true; |
|
818 default: |
|
819 return false; |
|
820 } |
|
821 } |
|
822 |
|
823 static const struct net_device_ops e1000_netdev_ops = { |
|
824 .ndo_open = e1000_open, |
|
825 .ndo_stop = e1000_close, |
|
826 .ndo_start_xmit = e1000_xmit_frame, |
|
827 .ndo_get_stats = e1000_get_stats, |
|
828 .ndo_set_rx_mode = e1000_set_rx_mode, |
|
829 .ndo_set_mac_address = e1000_set_mac, |
|
830 .ndo_tx_timeout = e1000_tx_timeout, |
|
831 .ndo_change_mtu = e1000_change_mtu, |
|
832 .ndo_do_ioctl = e1000_ioctl, |
|
833 .ndo_validate_addr = eth_validate_addr, |
|
834 |
|
835 .ndo_vlan_rx_register = e1000_vlan_rx_register, |
|
836 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
837 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
838 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
839 .ndo_poll_controller = e1000_netpoll, |
|
840 #endif |
|
841 }; |
|
842 |
|
843 /** |
|
844 * e1000_init_hw_struct - initialize members of hw struct |
|
845 * @adapter: board private struct |
|
846 * @hw: structure used by e1000_hw.c |
|
847 * |
|
848 * Factors out initialization of the e1000_hw struct to its own function |
|
849 * that can be called very early at init (just after struct allocation). |
|
850 * Fields are initialized based on PCI device information and |
|
851 * OS network device settings (MTU size). |
|
852 * Returns negative error codes if MAC type setup fails. |
|
853 */ |
|
854 static int e1000_init_hw_struct(struct e1000_adapter *adapter, |
|
855 struct e1000_hw *hw) |
|
856 { |
|
857 struct pci_dev *pdev = adapter->pdev; |
|
858 |
|
859 /* PCI config space info */ |
|
860 hw->vendor_id = pdev->vendor; |
|
861 hw->device_id = pdev->device; |
|
862 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
863 hw->subsystem_id = pdev->subsystem_device; |
|
864 hw->revision_id = pdev->revision; |
|
865 |
|
866 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
867 |
|
868 hw->max_frame_size = adapter->netdev->mtu + |
|
869 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
870 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
871 |
|
872 /* identify the MAC */ |
|
873 if (e1000_set_mac_type(hw)) { |
|
874 e_err(probe, "Unknown MAC Type\n"); |
|
875 return -EIO; |
|
876 } |
|
877 |
|
878 switch (hw->mac_type) { |
|
879 default: |
|
880 break; |
|
881 case e1000_82541: |
|
882 case e1000_82547: |
|
883 case e1000_82541_rev_2: |
|
884 case e1000_82547_rev_2: |
|
885 hw->phy_init_script = 1; |
|
886 break; |
|
887 } |
|
888 |
|
889 e1000_set_media_type(hw); |
|
890 e1000_get_bus_info(hw); |
|
891 |
|
892 hw->wait_autoneg_complete = false; |
|
893 hw->tbi_compatibility_en = true; |
|
894 hw->adaptive_ifs = true; |
|
895 |
|
896 /* Copper options */ |
|
897 |
|
898 if (hw->media_type == e1000_media_type_copper) { |
|
899 hw->mdix = AUTO_ALL_MODES; |
|
900 hw->disable_polarity_correction = false; |
|
901 hw->master_slave = E1000_MASTER_SLAVE; |
|
902 } |
|
903 |
|
904 return 0; |
|
905 } |
|
906 |
|
907 /** |
|
908 * e1000_probe - Device Initialization Routine |
|
909 * @pdev: PCI device information struct |
|
910 * @ent: entry in e1000_pci_tbl |
|
911 * |
|
912 * Returns 0 on success, negative on failure |
|
913 * |
|
914 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
915 * The OS initialization, configuring of the adapter private structure, |
|
916 * and a hardware reset occur. |
|
917 **/ |
|
918 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
919 const struct pci_device_id *ent) |
|
920 { |
|
921 struct net_device *netdev; |
|
922 struct e1000_adapter *adapter; |
|
923 struct e1000_hw *hw; |
|
924 |
|
925 static int cards_found = 0; |
|
926 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
927 int i, err, pci_using_dac; |
|
928 u16 eeprom_data = 0; |
|
929 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
930 int bars, need_ioport; |
|
931 |
|
932 /* do not allocate ioport bars when not needed */ |
|
933 need_ioport = e1000_is_need_ioport(pdev); |
|
934 if (need_ioport) { |
|
935 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); |
|
936 err = pci_enable_device(pdev); |
|
937 } else { |
|
938 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
939 err = pci_enable_device_mem(pdev); |
|
940 } |
|
941 if (err) |
|
942 return err; |
|
943 |
|
944 err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
|
945 if (err) |
|
946 goto err_pci_reg; |
|
947 |
|
948 pci_set_master(pdev); |
|
949 err = pci_save_state(pdev); |
|
950 if (err) |
|
951 goto err_alloc_etherdev; |
|
952 |
|
953 err = -ENOMEM; |
|
954 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
955 if (!netdev) |
|
956 goto err_alloc_etherdev; |
|
957 |
|
958 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
959 |
|
960 pci_set_drvdata(pdev, netdev); |
|
961 adapter = netdev_priv(netdev); |
|
962 adapter->netdev = netdev; |
|
963 adapter->pdev = pdev; |
|
964 adapter->msg_enable = (1 << debug) - 1; |
|
965 adapter->bars = bars; |
|
966 adapter->need_ioport = need_ioport; |
|
967 |
|
968 hw = &adapter->hw; |
|
969 hw->back = adapter; |
|
970 |
|
971 err = -EIO; |
|
972 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
|
973 if (!hw->hw_addr) |
|
974 goto err_ioremap; |
|
975 |
|
976 if (adapter->need_ioport) { |
|
977 for (i = BAR_1; i <= BAR_5; i++) { |
|
978 if (pci_resource_len(pdev, i) == 0) |
|
979 continue; |
|
980 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
981 hw->io_base = pci_resource_start(pdev, i); |
|
982 break; |
|
983 } |
|
984 } |
|
985 } |
|
986 |
|
987 /* make ready for any if (hw->...) below */ |
|
988 err = e1000_init_hw_struct(adapter, hw); |
|
989 if (err) |
|
990 goto err_sw_init; |
|
991 |
|
992 /* |
|
993 * there is a workaround being applied below that limits |
|
994 * 64-bit DMA addresses to 64-bit hardware. There are some |
|
995 * 32-bit adapters that Tx hang when given 64-bit DMA addresses |
|
996 */ |
|
997 pci_using_dac = 0; |
|
998 if ((hw->bus_type == e1000_bus_type_pcix) && |
|
999 !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { |
|
1000 /* |
|
1001 * according to DMA-API-HOWTO, coherent calls will always |
|
1002 * succeed if the set call did |
|
1003 */ |
|
1004 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
1005 pci_using_dac = 1; |
|
1006 } else { |
|
1007 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
1008 if (err) { |
|
1009 pr_err("No usable DMA config, aborting\n"); |
|
1010 goto err_dma; |
|
1011 } |
|
1012 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
1013 } |
|
1014 |
|
1015 netdev->netdev_ops = &e1000_netdev_ops; |
|
1016 e1000_set_ethtool_ops(netdev); |
|
1017 netdev->watchdog_timeo = 5 * HZ; |
|
1018 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
1019 |
|
1020 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
1021 |
|
1022 adapter->bd_number = cards_found; |
|
1023 |
|
1024 /* setup the private structure */ |
|
1025 |
|
1026 err = e1000_sw_init(adapter); |
|
1027 if (err) |
|
1028 goto err_sw_init; |
|
1029 |
|
1030 err = -EIO; |
|
1031 |
|
1032 if (hw->mac_type >= e1000_82543) { |
|
1033 netdev->features = NETIF_F_SG | |
|
1034 NETIF_F_HW_CSUM | |
|
1035 NETIF_F_HW_VLAN_TX | |
|
1036 NETIF_F_HW_VLAN_RX | |
|
1037 NETIF_F_HW_VLAN_FILTER; |
|
1038 } |
|
1039 |
|
1040 if ((hw->mac_type >= e1000_82544) && |
|
1041 (hw->mac_type != e1000_82547)) |
|
1042 netdev->features |= NETIF_F_TSO; |
|
1043 |
|
1044 if (pci_using_dac) { |
|
1045 netdev->features |= NETIF_F_HIGHDMA; |
|
1046 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
1047 } |
|
1048 |
|
1049 netdev->vlan_features |= NETIF_F_TSO; |
|
1050 netdev->vlan_features |= NETIF_F_HW_CSUM; |
|
1051 netdev->vlan_features |= NETIF_F_SG; |
|
1052 |
|
1053 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
|
1054 |
|
1055 /* initialize eeprom parameters */ |
|
1056 if (e1000_init_eeprom_params(hw)) { |
|
1057 e_err(probe, "EEPROM initialization failed\n"); |
|
1058 goto err_eeprom; |
|
1059 } |
|
1060 |
|
1061 /* before reading the EEPROM, reset the controller to |
|
1062 * put the device in a known good starting state */ |
|
1063 |
|
1064 e1000_reset_hw(hw); |
|
1065 |
|
1066 /* make sure the EEPROM is good */ |
|
1067 if (e1000_validate_eeprom_checksum(hw) < 0) { |
|
1068 e_err(probe, "The EEPROM Checksum Is Not Valid\n"); |
|
1069 e1000_dump_eeprom(adapter); |
|
1070 /* |
|
1071 * set MAC address to all zeroes to invalidate and temporary |
|
1072 * disable this device for the user. This blocks regular |
|
1073 * traffic while still permitting ethtool ioctls from reaching |
|
1074 * the hardware as well as allowing the user to run the |
|
1075 * interface after manually setting a hw addr using |
|
1076 * `ip set address` |
|
1077 */ |
|
1078 memset(hw->mac_addr, 0, netdev->addr_len); |
|
1079 } else { |
|
1080 /* copy the MAC address out of the EEPROM */ |
|
1081 if (e1000_read_mac_addr(hw)) |
|
1082 e_err(probe, "EEPROM Read Error\n"); |
|
1083 } |
|
1084 /* don't block initalization here due to bad MAC address */ |
|
1085 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
|
1086 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); |
|
1087 |
|
1088 if (!is_valid_ether_addr(netdev->perm_addr)) |
|
1089 e_err(probe, "Invalid MAC Address\n"); |
|
1090 |
|
1091 init_timer(&adapter->tx_fifo_stall_timer); |
|
1092 adapter->tx_fifo_stall_timer.function = e1000_82547_tx_fifo_stall; |
|
1093 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
|
1094 |
|
1095 init_timer(&adapter->watchdog_timer); |
|
1096 adapter->watchdog_timer.function = e1000_watchdog; |
|
1097 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
1098 |
|
1099 init_timer(&adapter->phy_info_timer); |
|
1100 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
1101 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
1102 |
|
1103 INIT_WORK(&adapter->fifo_stall_task, e1000_82547_tx_fifo_stall_task); |
|
1104 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
1105 INIT_WORK(&adapter->phy_info_task, e1000_update_phy_info_task); |
|
1106 |
|
1107 e1000_check_options(adapter); |
|
1108 |
|
1109 /* Initial Wake on LAN setting |
|
1110 * If APM wake is enabled in the EEPROM, |
|
1111 * enable the ACPI Magic Packet filter |
|
1112 */ |
|
1113 |
|
1114 switch (hw->mac_type) { |
|
1115 case e1000_82542_rev2_0: |
|
1116 case e1000_82542_rev2_1: |
|
1117 case e1000_82543: |
|
1118 break; |
|
1119 case e1000_82544: |
|
1120 e1000_read_eeprom(hw, |
|
1121 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
1122 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
1123 break; |
|
1124 case e1000_82546: |
|
1125 case e1000_82546_rev_3: |
|
1126 if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
|
1127 e1000_read_eeprom(hw, |
|
1128 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
1129 break; |
|
1130 } |
|
1131 /* Fall Through */ |
|
1132 default: |
|
1133 e1000_read_eeprom(hw, |
|
1134 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1135 break; |
|
1136 } |
|
1137 if (eeprom_data & eeprom_apme_mask) |
|
1138 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1139 |
|
1140 /* now that we have the eeprom settings, apply the special cases |
|
1141 * where the eeprom may be wrong or the board simply won't support |
|
1142 * wake on lan on a particular port */ |
|
1143 switch (pdev->device) { |
|
1144 case E1000_DEV_ID_82546GB_PCIE: |
|
1145 adapter->eeprom_wol = 0; |
|
1146 break; |
|
1147 case E1000_DEV_ID_82546EB_FIBER: |
|
1148 case E1000_DEV_ID_82546GB_FIBER: |
|
1149 /* Wake events only supported on port A for dual fiber |
|
1150 * regardless of eeprom setting */ |
|
1151 if (er32(STATUS) & E1000_STATUS_FUNC_1) |
|
1152 adapter->eeprom_wol = 0; |
|
1153 break; |
|
1154 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1155 /* if quad port adapter, disable WoL on all but port A */ |
|
1156 if (global_quad_port_a != 0) |
|
1157 adapter->eeprom_wol = 0; |
|
1158 else |
|
1159 adapter->quad_port_a = 1; |
|
1160 /* Reset for multiple quad port adapters */ |
|
1161 if (++global_quad_port_a == 4) |
|
1162 global_quad_port_a = 0; |
|
1163 break; |
|
1164 } |
|
1165 |
|
1166 /* initialize the wol settings based on the eeprom settings */ |
|
1167 adapter->wol = adapter->eeprom_wol; |
|
1168 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
1169 |
|
1170 /* reset the hardware with the new settings */ |
|
1171 e1000_reset(adapter); |
|
1172 |
|
1173 // offer device to EtherCAT master module |
|
1174 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
1175 if (adapter->ecdev) { |
|
1176 if (ecdev_open(adapter->ecdev)) { |
|
1177 ecdev_withdraw(adapter->ecdev); |
|
1178 goto err_register; |
|
1179 } |
|
1180 } else { |
|
1181 strcpy(netdev->name, "eth%d"); |
|
1182 err = register_netdev(netdev); |
|
1183 if (err) |
|
1184 goto err_register; |
|
1185 } |
|
1186 |
|
1187 /* print bus type/speed/width info */ |
|
1188 e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n", |
|
1189 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
|
1190 ((hw->bus_speed == e1000_bus_speed_133) ? 133 : |
|
1191 (hw->bus_speed == e1000_bus_speed_120) ? 120 : |
|
1192 (hw->bus_speed == e1000_bus_speed_100) ? 100 : |
|
1193 (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33), |
|
1194 ((hw->bus_width == e1000_bus_width_64) ? 64 : 32), |
|
1195 netdev->dev_addr); |
|
1196 |
|
1197 if (!adapter->ecdev) { |
|
1198 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
1199 netif_carrier_off(netdev); |
|
1200 } |
|
1201 |
|
1202 e_info(probe, "Intel(R) PRO/1000 Network Connection\n"); |
|
1203 |
|
1204 cards_found++; |
|
1205 return 0; |
|
1206 |
|
1207 err_register: |
|
1208 err_eeprom: |
|
1209 e1000_phy_hw_reset(hw); |
|
1210 |
|
1211 if (hw->flash_address) |
|
1212 iounmap(hw->flash_address); |
|
1213 kfree(adapter->tx_ring); |
|
1214 kfree(adapter->rx_ring); |
|
1215 err_dma: |
|
1216 err_sw_init: |
|
1217 iounmap(hw->hw_addr); |
|
1218 err_ioremap: |
|
1219 free_netdev(netdev); |
|
1220 err_alloc_etherdev: |
|
1221 pci_release_selected_regions(pdev, bars); |
|
1222 err_pci_reg: |
|
1223 pci_disable_device(pdev); |
|
1224 return err; |
|
1225 } |
|
1226 |
|
1227 /** |
|
1228 * e1000_remove - Device Removal Routine |
|
1229 * @pdev: PCI device information struct |
|
1230 * |
|
1231 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1232 * that it should release a PCI device. The could be caused by a |
|
1233 * Hot-Plug event, or because the driver is going to be removed from |
|
1234 * memory. |
|
1235 **/ |
|
1236 |
|
1237 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
1238 { |
|
1239 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1240 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1241 struct e1000_hw *hw = &adapter->hw; |
|
1242 |
|
1243 set_bit(__E1000_DOWN, &adapter->flags); |
|
1244 |
|
1245 if (!adapter->ecdev) { |
|
1246 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
1247 del_timer_sync(&adapter->watchdog_timer); |
|
1248 del_timer_sync(&adapter->phy_info_timer); |
|
1249 } |
|
1250 |
|
1251 cancel_work_sync(&adapter->reset_task); |
|
1252 |
|
1253 e1000_release_manageability(adapter); |
|
1254 |
|
1255 if (adapter->ecdev) { |
|
1256 ecdev_close(adapter->ecdev); |
|
1257 ecdev_withdraw(adapter->ecdev); |
|
1258 } else { |
|
1259 unregister_netdev(netdev); |
|
1260 } |
|
1261 |
|
1262 e1000_phy_hw_reset(hw); |
|
1263 |
|
1264 kfree(adapter->tx_ring); |
|
1265 kfree(adapter->rx_ring); |
|
1266 |
|
1267 iounmap(hw->hw_addr); |
|
1268 if (hw->flash_address) |
|
1269 iounmap(hw->flash_address); |
|
1270 pci_release_selected_regions(pdev, adapter->bars); |
|
1271 |
|
1272 free_netdev(netdev); |
|
1273 |
|
1274 pci_disable_device(pdev); |
|
1275 } |
|
1276 |
|
1277 /** |
|
1278 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1279 * @adapter: board private structure to initialize |
|
1280 * |
|
1281 * e1000_sw_init initializes the Adapter private data structure. |
|
1282 * e1000_init_hw_struct MUST be called before this function |
|
1283 **/ |
|
1284 |
|
1285 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
1286 { |
|
1287 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1288 |
|
1289 adapter->num_tx_queues = 1; |
|
1290 adapter->num_rx_queues = 1; |
|
1291 |
|
1292 if (e1000_alloc_queues(adapter)) { |
|
1293 e_err(probe, "Unable to allocate memory for queues\n"); |
|
1294 return -ENOMEM; |
|
1295 } |
|
1296 |
|
1297 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1298 e1000_irq_disable(adapter); |
|
1299 |
|
1300 spin_lock_init(&adapter->stats_lock); |
|
1301 |
|
1302 set_bit(__E1000_DOWN, &adapter->flags); |
|
1303 |
|
1304 return 0; |
|
1305 } |
|
1306 |
|
1307 /** |
|
1308 * e1000_alloc_queues - Allocate memory for all rings |
|
1309 * @adapter: board private structure to initialize |
|
1310 * |
|
1311 * We allocate one ring per queue at run-time since we don't know the |
|
1312 * number of queues at compile-time. |
|
1313 **/ |
|
1314 |
|
1315 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1316 { |
|
1317 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1318 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1319 if (!adapter->tx_ring) |
|
1320 return -ENOMEM; |
|
1321 |
|
1322 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1323 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1324 if (!adapter->rx_ring) { |
|
1325 kfree(adapter->tx_ring); |
|
1326 return -ENOMEM; |
|
1327 } |
|
1328 |
|
1329 return E1000_SUCCESS; |
|
1330 } |
|
1331 |
|
1332 /** |
|
1333 * e1000_open - Called when a network interface is made active |
|
1334 * @netdev: network interface device structure |
|
1335 * |
|
1336 * Returns 0 on success, negative value on failure |
|
1337 * |
|
1338 * The open entry point is called when a network interface is made |
|
1339 * active by the system (IFF_UP). At this point all resources needed |
|
1340 * for transmit and receive operations are allocated, the interrupt |
|
1341 * handler is registered with the OS, the watchdog timer is started, |
|
1342 * and the stack is notified that the interface is ready. |
|
1343 **/ |
|
1344 |
|
1345 static int e1000_open(struct net_device *netdev) |
|
1346 { |
|
1347 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1348 struct e1000_hw *hw = &adapter->hw; |
|
1349 int err; |
|
1350 |
|
1351 /* disallow open during test */ |
|
1352 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1353 return -EBUSY; |
|
1354 |
|
1355 netif_carrier_off(netdev); |
|
1356 |
|
1357 /* allocate transmit descriptors */ |
|
1358 err = e1000_setup_all_tx_resources(adapter); |
|
1359 if (err) |
|
1360 goto err_setup_tx; |
|
1361 |
|
1362 /* allocate receive descriptors */ |
|
1363 err = e1000_setup_all_rx_resources(adapter); |
|
1364 if (err) |
|
1365 goto err_setup_rx; |
|
1366 |
|
1367 e1000_power_up_phy(adapter); |
|
1368 |
|
1369 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1370 if ((hw->mng_cookie.status & |
|
1371 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1372 e1000_update_mng_vlan(adapter); |
|
1373 } |
|
1374 |
|
1375 /* before we allocate an interrupt, we must be ready to handle it. |
|
1376 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1377 * as soon as we call pci_request_irq, so we have to setup our |
|
1378 * clean_rx handler before we do so. */ |
|
1379 e1000_configure(adapter); |
|
1380 |
|
1381 err = e1000_request_irq(adapter); |
|
1382 if (err) |
|
1383 goto err_req_irq; |
|
1384 |
|
1385 /* From here on the code is the same as e1000_up() */ |
|
1386 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1387 |
|
1388 napi_enable(&adapter->napi); |
|
1389 |
|
1390 e1000_irq_enable(adapter); |
|
1391 |
|
1392 netif_start_queue(netdev); |
|
1393 |
|
1394 /* fire a link status change interrupt to start the watchdog */ |
|
1395 ew32(ICS, E1000_ICS_LSC); |
|
1396 |
|
1397 return E1000_SUCCESS; |
|
1398 |
|
1399 err_req_irq: |
|
1400 e1000_power_down_phy(adapter); |
|
1401 e1000_free_all_rx_resources(adapter); |
|
1402 err_setup_rx: |
|
1403 e1000_free_all_tx_resources(adapter); |
|
1404 err_setup_tx: |
|
1405 e1000_reset(adapter); |
|
1406 |
|
1407 return err; |
|
1408 } |
|
1409 |
|
1410 /** |
|
1411 * e1000_close - Disables a network interface |
|
1412 * @netdev: network interface device structure |
|
1413 * |
|
1414 * Returns 0, this is not allowed to fail |
|
1415 * |
|
1416 * The close entry point is called when an interface is de-activated |
|
1417 * by the OS. The hardware is still under the drivers control, but |
|
1418 * needs to be disabled. A global MAC reset is issued to stop the |
|
1419 * hardware, and all transmit and receive resources are freed. |
|
1420 **/ |
|
1421 |
|
1422 static int e1000_close(struct net_device *netdev) |
|
1423 { |
|
1424 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1425 struct e1000_hw *hw = &adapter->hw; |
|
1426 |
|
1427 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1428 e1000_down(adapter); |
|
1429 e1000_power_down_phy(adapter); |
|
1430 e1000_free_irq(adapter); |
|
1431 |
|
1432 e1000_free_all_tx_resources(adapter); |
|
1433 e1000_free_all_rx_resources(adapter); |
|
1434 |
|
1435 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1436 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1437 if ((hw->mng_cookie.status & |
|
1438 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1439 !(adapter->vlgrp && |
|
1440 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1441 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1442 } |
|
1443 |
|
1444 return 0; |
|
1445 } |
|
1446 |
|
1447 /** |
|
1448 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1449 * @adapter: address of board private structure |
|
1450 * @start: address of beginning of memory |
|
1451 * @len: length of memory |
|
1452 **/ |
|
1453 static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
|
1454 unsigned long len) |
|
1455 { |
|
1456 struct e1000_hw *hw = &adapter->hw; |
|
1457 unsigned long begin = (unsigned long)start; |
|
1458 unsigned long end = begin + len; |
|
1459 |
|
1460 /* First rev 82545 and 82546 need to not allow any memory |
|
1461 * write location to cross 64k boundary due to errata 23 */ |
|
1462 if (hw->mac_type == e1000_82545 || |
|
1463 hw->mac_type == e1000_82546) { |
|
1464 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
|
1465 } |
|
1466 |
|
1467 return true; |
|
1468 } |
|
1469 |
|
1470 /** |
|
1471 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1472 * @adapter: board private structure |
|
1473 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1474 * |
|
1475 * Return 0 on success, negative on failure |
|
1476 **/ |
|
1477 |
|
1478 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1479 struct e1000_tx_ring *txdr) |
|
1480 { |
|
1481 struct pci_dev *pdev = adapter->pdev; |
|
1482 int size; |
|
1483 |
|
1484 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1485 txdr->buffer_info = vmalloc(size); |
|
1486 if (!txdr->buffer_info) { |
|
1487 e_err(probe, "Unable to allocate memory for the Tx descriptor " |
|
1488 "ring\n"); |
|
1489 return -ENOMEM; |
|
1490 } |
|
1491 memset(txdr->buffer_info, 0, size); |
|
1492 |
|
1493 /* round up to nearest 4K */ |
|
1494 |
|
1495 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1496 txdr->size = ALIGN(txdr->size, 4096); |
|
1497 |
|
1498 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma, |
|
1499 GFP_KERNEL); |
|
1500 if (!txdr->desc) { |
|
1501 setup_tx_desc_die: |
|
1502 vfree(txdr->buffer_info); |
|
1503 e_err(probe, "Unable to allocate memory for the Tx descriptor " |
|
1504 "ring\n"); |
|
1505 return -ENOMEM; |
|
1506 } |
|
1507 |
|
1508 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1509 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1510 void *olddesc = txdr->desc; |
|
1511 dma_addr_t olddma = txdr->dma; |
|
1512 e_err(tx_err, "txdr align check failed: %u bytes at %p\n", |
|
1513 txdr->size, txdr->desc); |
|
1514 /* Try again, without freeing the previous */ |
|
1515 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, |
|
1516 &txdr->dma, GFP_KERNEL); |
|
1517 /* Failed allocation, critical failure */ |
|
1518 if (!txdr->desc) { |
|
1519 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1520 olddma); |
|
1521 goto setup_tx_desc_die; |
|
1522 } |
|
1523 |
|
1524 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1525 /* give up */ |
|
1526 dma_free_coherent(&pdev->dev, txdr->size, txdr->desc, |
|
1527 txdr->dma); |
|
1528 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1529 olddma); |
|
1530 e_err(probe, "Unable to allocate aligned memory " |
|
1531 "for the transmit descriptor ring\n"); |
|
1532 vfree(txdr->buffer_info); |
|
1533 return -ENOMEM; |
|
1534 } else { |
|
1535 /* Free old allocation, new allocation was successful */ |
|
1536 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1537 olddma); |
|
1538 } |
|
1539 } |
|
1540 memset(txdr->desc, 0, txdr->size); |
|
1541 |
|
1542 txdr->next_to_use = 0; |
|
1543 txdr->next_to_clean = 0; |
|
1544 |
|
1545 return 0; |
|
1546 } |
|
1547 |
|
1548 /** |
|
1549 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1550 * (Descriptors) for all queues |
|
1551 * @adapter: board private structure |
|
1552 * |
|
1553 * Return 0 on success, negative on failure |
|
1554 **/ |
|
1555 |
|
1556 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1557 { |
|
1558 int i, err = 0; |
|
1559 |
|
1560 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1561 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1562 if (err) { |
|
1563 e_err(probe, "Allocation for Tx Queue %u failed\n", i); |
|
1564 for (i-- ; i >= 0; i--) |
|
1565 e1000_free_tx_resources(adapter, |
|
1566 &adapter->tx_ring[i]); |
|
1567 break; |
|
1568 } |
|
1569 } |
|
1570 |
|
1571 return err; |
|
1572 } |
|
1573 |
|
1574 /** |
|
1575 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1576 * @adapter: board private structure |
|
1577 * |
|
1578 * Configure the Tx unit of the MAC after a reset. |
|
1579 **/ |
|
1580 |
|
1581 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
1582 { |
|
1583 u64 tdba; |
|
1584 struct e1000_hw *hw = &adapter->hw; |
|
1585 u32 tdlen, tctl, tipg; |
|
1586 u32 ipgr1, ipgr2; |
|
1587 |
|
1588 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1589 |
|
1590 switch (adapter->num_tx_queues) { |
|
1591 case 1: |
|
1592 default: |
|
1593 tdba = adapter->tx_ring[0].dma; |
|
1594 tdlen = adapter->tx_ring[0].count * |
|
1595 sizeof(struct e1000_tx_desc); |
|
1596 ew32(TDLEN, tdlen); |
|
1597 ew32(TDBAH, (tdba >> 32)); |
|
1598 ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1599 ew32(TDT, 0); |
|
1600 ew32(TDH, 0); |
|
1601 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1602 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1603 break; |
|
1604 } |
|
1605 |
|
1606 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1607 if ((hw->media_type == e1000_media_type_fiber || |
|
1608 hw->media_type == e1000_media_type_internal_serdes)) |
|
1609 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1610 else |
|
1611 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1612 |
|
1613 switch (hw->mac_type) { |
|
1614 case e1000_82542_rev2_0: |
|
1615 case e1000_82542_rev2_1: |
|
1616 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1617 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1618 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1619 break; |
|
1620 default: |
|
1621 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1622 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1623 break; |
|
1624 } |
|
1625 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1626 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1627 ew32(TIPG, tipg); |
|
1628 |
|
1629 /* Set the Tx Interrupt Delay register */ |
|
1630 |
|
1631 ew32(TIDV, adapter->tx_int_delay); |
|
1632 if (hw->mac_type >= e1000_82540) |
|
1633 ew32(TADV, adapter->tx_abs_int_delay); |
|
1634 |
|
1635 /* Program the Transmit Control Register */ |
|
1636 |
|
1637 tctl = er32(TCTL); |
|
1638 tctl &= ~E1000_TCTL_CT; |
|
1639 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1640 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1641 |
|
1642 e1000_config_collision_dist(hw); |
|
1643 |
|
1644 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1645 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1646 |
|
1647 /* only set IDE if we are delaying interrupts using the timers */ |
|
1648 if (adapter->tx_int_delay) |
|
1649 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1650 |
|
1651 if (hw->mac_type < e1000_82543) |
|
1652 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1653 else |
|
1654 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1655 |
|
1656 /* Cache if we're 82544 running in PCI-X because we'll |
|
1657 * need this to apply a workaround later in the send path. */ |
|
1658 if (hw->mac_type == e1000_82544 && |
|
1659 hw->bus_type == e1000_bus_type_pcix) |
|
1660 adapter->pcix_82544 = 1; |
|
1661 |
|
1662 ew32(TCTL, tctl); |
|
1663 |
|
1664 } |
|
1665 |
|
1666 /** |
|
1667 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1668 * @adapter: board private structure |
|
1669 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1670 * |
|
1671 * Returns 0 on success, negative on failure |
|
1672 **/ |
|
1673 |
|
1674 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1675 struct e1000_rx_ring *rxdr) |
|
1676 { |
|
1677 struct pci_dev *pdev = adapter->pdev; |
|
1678 int size, desc_len; |
|
1679 |
|
1680 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1681 rxdr->buffer_info = vmalloc(size); |
|
1682 if (!rxdr->buffer_info) { |
|
1683 e_err(probe, "Unable to allocate memory for the Rx descriptor " |
|
1684 "ring\n"); |
|
1685 return -ENOMEM; |
|
1686 } |
|
1687 memset(rxdr->buffer_info, 0, size); |
|
1688 |
|
1689 desc_len = sizeof(struct e1000_rx_desc); |
|
1690 |
|
1691 /* Round up to nearest 4K */ |
|
1692 |
|
1693 rxdr->size = rxdr->count * desc_len; |
|
1694 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1695 |
|
1696 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, |
|
1697 GFP_KERNEL); |
|
1698 |
|
1699 if (!rxdr->desc) { |
|
1700 e_err(probe, "Unable to allocate memory for the Rx descriptor " |
|
1701 "ring\n"); |
|
1702 setup_rx_desc_die: |
|
1703 vfree(rxdr->buffer_info); |
|
1704 return -ENOMEM; |
|
1705 } |
|
1706 |
|
1707 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1708 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1709 void *olddesc = rxdr->desc; |
|
1710 dma_addr_t olddma = rxdr->dma; |
|
1711 e_err(rx_err, "rxdr align check failed: %u bytes at %p\n", |
|
1712 rxdr->size, rxdr->desc); |
|
1713 /* Try again, without freeing the previous */ |
|
1714 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, |
|
1715 &rxdr->dma, GFP_KERNEL); |
|
1716 /* Failed allocation, critical failure */ |
|
1717 if (!rxdr->desc) { |
|
1718 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1719 olddma); |
|
1720 e_err(probe, "Unable to allocate memory for the Rx " |
|
1721 "descriptor ring\n"); |
|
1722 goto setup_rx_desc_die; |
|
1723 } |
|
1724 |
|
1725 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1726 /* give up */ |
|
1727 dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc, |
|
1728 rxdr->dma); |
|
1729 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1730 olddma); |
|
1731 e_err(probe, "Unable to allocate aligned memory for " |
|
1732 "the Rx descriptor ring\n"); |
|
1733 goto setup_rx_desc_die; |
|
1734 } else { |
|
1735 /* Free old allocation, new allocation was successful */ |
|
1736 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1737 olddma); |
|
1738 } |
|
1739 } |
|
1740 memset(rxdr->desc, 0, rxdr->size); |
|
1741 |
|
1742 rxdr->next_to_clean = 0; |
|
1743 rxdr->next_to_use = 0; |
|
1744 rxdr->rx_skb_top = NULL; |
|
1745 |
|
1746 return 0; |
|
1747 } |
|
1748 |
|
1749 /** |
|
1750 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1751 * (Descriptors) for all queues |
|
1752 * @adapter: board private structure |
|
1753 * |
|
1754 * Return 0 on success, negative on failure |
|
1755 **/ |
|
1756 |
|
1757 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1758 { |
|
1759 int i, err = 0; |
|
1760 |
|
1761 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1762 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1763 if (err) { |
|
1764 e_err(probe, "Allocation for Rx Queue %u failed\n", i); |
|
1765 for (i-- ; i >= 0; i--) |
|
1766 e1000_free_rx_resources(adapter, |
|
1767 &adapter->rx_ring[i]); |
|
1768 break; |
|
1769 } |
|
1770 } |
|
1771 |
|
1772 return err; |
|
1773 } |
|
1774 |
|
1775 /** |
|
1776 * e1000_setup_rctl - configure the receive control registers |
|
1777 * @adapter: Board private structure |
|
1778 **/ |
|
1779 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1780 { |
|
1781 struct e1000_hw *hw = &adapter->hw; |
|
1782 u32 rctl; |
|
1783 |
|
1784 rctl = er32(RCTL); |
|
1785 |
|
1786 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1787 |
|
1788 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1789 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1790 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1791 |
|
1792 if (hw->tbi_compatibility_on == 1) |
|
1793 rctl |= E1000_RCTL_SBP; |
|
1794 else |
|
1795 rctl &= ~E1000_RCTL_SBP; |
|
1796 |
|
1797 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1798 rctl &= ~E1000_RCTL_LPE; |
|
1799 else |
|
1800 rctl |= E1000_RCTL_LPE; |
|
1801 |
|
1802 /* Setup buffer sizes */ |
|
1803 rctl &= ~E1000_RCTL_SZ_4096; |
|
1804 rctl |= E1000_RCTL_BSEX; |
|
1805 switch (adapter->rx_buffer_len) { |
|
1806 case E1000_RXBUFFER_2048: |
|
1807 default: |
|
1808 rctl |= E1000_RCTL_SZ_2048; |
|
1809 rctl &= ~E1000_RCTL_BSEX; |
|
1810 break; |
|
1811 case E1000_RXBUFFER_4096: |
|
1812 rctl |= E1000_RCTL_SZ_4096; |
|
1813 break; |
|
1814 case E1000_RXBUFFER_8192: |
|
1815 rctl |= E1000_RCTL_SZ_8192; |
|
1816 break; |
|
1817 case E1000_RXBUFFER_16384: |
|
1818 rctl |= E1000_RCTL_SZ_16384; |
|
1819 break; |
|
1820 } |
|
1821 |
|
1822 ew32(RCTL, rctl); |
|
1823 } |
|
1824 |
|
1825 /** |
|
1826 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
1827 * @adapter: board private structure |
|
1828 * |
|
1829 * Configure the Rx unit of the MAC after a reset. |
|
1830 **/ |
|
1831 |
|
1832 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
1833 { |
|
1834 u64 rdba; |
|
1835 struct e1000_hw *hw = &adapter->hw; |
|
1836 u32 rdlen, rctl, rxcsum; |
|
1837 |
|
1838 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
1839 rdlen = adapter->rx_ring[0].count * |
|
1840 sizeof(struct e1000_rx_desc); |
|
1841 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
1842 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
1843 } else { |
|
1844 rdlen = adapter->rx_ring[0].count * |
|
1845 sizeof(struct e1000_rx_desc); |
|
1846 adapter->clean_rx = e1000_clean_rx_irq; |
|
1847 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
1848 } |
|
1849 |
|
1850 /* disable receives while setting up the descriptors */ |
|
1851 rctl = er32(RCTL); |
|
1852 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1853 |
|
1854 /* set the Receive Delay Timer Register */ |
|
1855 ew32(RDTR, adapter->rx_int_delay); |
|
1856 |
|
1857 if (hw->mac_type >= e1000_82540) { |
|
1858 ew32(RADV, adapter->rx_abs_int_delay); |
|
1859 if (adapter->itr_setting != 0) |
|
1860 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
1861 } |
|
1862 |
|
1863 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
1864 * the Base and Length of the Rx Descriptor Ring */ |
|
1865 switch (adapter->num_rx_queues) { |
|
1866 case 1: |
|
1867 default: |
|
1868 rdba = adapter->rx_ring[0].dma; |
|
1869 ew32(RDLEN, rdlen); |
|
1870 ew32(RDBAH, (rdba >> 32)); |
|
1871 ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
1872 ew32(RDT, 0); |
|
1873 ew32(RDH, 0); |
|
1874 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
1875 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
1876 break; |
|
1877 } |
|
1878 |
|
1879 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
1880 if (hw->mac_type >= e1000_82543) { |
|
1881 rxcsum = er32(RXCSUM); |
|
1882 if (adapter->rx_csum) |
|
1883 rxcsum |= E1000_RXCSUM_TUOFL; |
|
1884 else |
|
1885 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
1886 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
1887 ew32(RXCSUM, rxcsum); |
|
1888 } |
|
1889 |
|
1890 /* Enable Receives */ |
|
1891 ew32(RCTL, rctl); |
|
1892 } |
|
1893 |
|
1894 /** |
|
1895 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
1896 * @adapter: board private structure |
|
1897 * @tx_ring: Tx descriptor ring for a specific queue |
|
1898 * |
|
1899 * Free all transmit software resources |
|
1900 **/ |
|
1901 |
|
1902 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
1903 struct e1000_tx_ring *tx_ring) |
|
1904 { |
|
1905 struct pci_dev *pdev = adapter->pdev; |
|
1906 |
|
1907 e1000_clean_tx_ring(adapter, tx_ring); |
|
1908 |
|
1909 vfree(tx_ring->buffer_info); |
|
1910 tx_ring->buffer_info = NULL; |
|
1911 |
|
1912 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
1913 tx_ring->dma); |
|
1914 |
|
1915 tx_ring->desc = NULL; |
|
1916 } |
|
1917 |
|
1918 /** |
|
1919 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
1920 * @adapter: board private structure |
|
1921 * |
|
1922 * Free all transmit software resources |
|
1923 **/ |
|
1924 |
|
1925 void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
1926 { |
|
1927 int i; |
|
1928 |
|
1929 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1930 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1931 } |
|
1932 |
|
1933 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
1934 struct e1000_buffer *buffer_info) |
|
1935 { |
|
1936 if (adapter->ecdev) |
|
1937 return; |
|
1938 |
|
1939 if (buffer_info->dma) { |
|
1940 if (buffer_info->mapped_as_page) |
|
1941 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1942 buffer_info->length, DMA_TO_DEVICE); |
|
1943 else |
|
1944 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1945 buffer_info->length, |
|
1946 DMA_TO_DEVICE); |
|
1947 buffer_info->dma = 0; |
|
1948 } |
|
1949 if (buffer_info->skb) { |
|
1950 dev_kfree_skb_any(buffer_info->skb); |
|
1951 buffer_info->skb = NULL; |
|
1952 } |
|
1953 buffer_info->time_stamp = 0; |
|
1954 /* buffer_info must be completely set up in the transmit path */ |
|
1955 } |
|
1956 |
|
1957 /** |
|
1958 * e1000_clean_tx_ring - Free Tx Buffers |
|
1959 * @adapter: board private structure |
|
1960 * @tx_ring: ring to be cleaned |
|
1961 **/ |
|
1962 |
|
1963 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
1964 struct e1000_tx_ring *tx_ring) |
|
1965 { |
|
1966 struct e1000_hw *hw = &adapter->hw; |
|
1967 struct e1000_buffer *buffer_info; |
|
1968 unsigned long size; |
|
1969 unsigned int i; |
|
1970 |
|
1971 /* Free all the Tx ring sk_buffs */ |
|
1972 |
|
1973 for (i = 0; i < tx_ring->count; i++) { |
|
1974 buffer_info = &tx_ring->buffer_info[i]; |
|
1975 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
1976 } |
|
1977 |
|
1978 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
1979 memset(tx_ring->buffer_info, 0, size); |
|
1980 |
|
1981 /* Zero out the descriptor ring */ |
|
1982 |
|
1983 memset(tx_ring->desc, 0, tx_ring->size); |
|
1984 |
|
1985 tx_ring->next_to_use = 0; |
|
1986 tx_ring->next_to_clean = 0; |
|
1987 tx_ring->last_tx_tso = 0; |
|
1988 |
|
1989 writel(0, hw->hw_addr + tx_ring->tdh); |
|
1990 writel(0, hw->hw_addr + tx_ring->tdt); |
|
1991 } |
|
1992 |
|
1993 /** |
|
1994 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
1995 * @adapter: board private structure |
|
1996 **/ |
|
1997 |
|
1998 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
1999 { |
|
2000 int i; |
|
2001 |
|
2002 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2003 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
2004 } |
|
2005 |
|
2006 /** |
|
2007 * e1000_free_rx_resources - Free Rx Resources |
|
2008 * @adapter: board private structure |
|
2009 * @rx_ring: ring to clean the resources from |
|
2010 * |
|
2011 * Free all receive software resources |
|
2012 **/ |
|
2013 |
|
2014 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
2015 struct e1000_rx_ring *rx_ring) |
|
2016 { |
|
2017 struct pci_dev *pdev = adapter->pdev; |
|
2018 |
|
2019 e1000_clean_rx_ring(adapter, rx_ring); |
|
2020 |
|
2021 vfree(rx_ring->buffer_info); |
|
2022 rx_ring->buffer_info = NULL; |
|
2023 |
|
2024 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2025 rx_ring->dma); |
|
2026 |
|
2027 rx_ring->desc = NULL; |
|
2028 } |
|
2029 |
|
2030 /** |
|
2031 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
2032 * @adapter: board private structure |
|
2033 * |
|
2034 * Free all receive software resources |
|
2035 **/ |
|
2036 |
|
2037 void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
2038 { |
|
2039 int i; |
|
2040 |
|
2041 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2042 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
2043 } |
|
2044 |
|
2045 /** |
|
2046 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
2047 * @adapter: board private structure |
|
2048 * @rx_ring: ring to free buffers from |
|
2049 **/ |
|
2050 |
|
2051 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
2052 struct e1000_rx_ring *rx_ring) |
|
2053 { |
|
2054 struct e1000_hw *hw = &adapter->hw; |
|
2055 struct e1000_buffer *buffer_info; |
|
2056 struct pci_dev *pdev = adapter->pdev; |
|
2057 unsigned long size; |
|
2058 unsigned int i; |
|
2059 |
|
2060 /* Free all the Rx ring sk_buffs */ |
|
2061 for (i = 0; i < rx_ring->count; i++) { |
|
2062 buffer_info = &rx_ring->buffer_info[i]; |
|
2063 if (buffer_info->dma && |
|
2064 adapter->clean_rx == e1000_clean_rx_irq) { |
|
2065 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
2066 buffer_info->length, |
|
2067 DMA_FROM_DEVICE); |
|
2068 } else if (buffer_info->dma && |
|
2069 adapter->clean_rx == e1000_clean_jumbo_rx_irq) { |
|
2070 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
2071 buffer_info->length, |
|
2072 DMA_FROM_DEVICE); |
|
2073 } |
|
2074 |
|
2075 buffer_info->dma = 0; |
|
2076 if (buffer_info->page) { |
|
2077 put_page(buffer_info->page); |
|
2078 buffer_info->page = NULL; |
|
2079 } |
|
2080 if (buffer_info->skb) { |
|
2081 dev_kfree_skb(buffer_info->skb); |
|
2082 buffer_info->skb = NULL; |
|
2083 } |
|
2084 } |
|
2085 |
|
2086 /* there also may be some cached data from a chained receive */ |
|
2087 if (rx_ring->rx_skb_top) { |
|
2088 dev_kfree_skb(rx_ring->rx_skb_top); |
|
2089 rx_ring->rx_skb_top = NULL; |
|
2090 } |
|
2091 |
|
2092 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2093 memset(rx_ring->buffer_info, 0, size); |
|
2094 |
|
2095 /* Zero out the descriptor ring */ |
|
2096 memset(rx_ring->desc, 0, rx_ring->size); |
|
2097 |
|
2098 rx_ring->next_to_clean = 0; |
|
2099 rx_ring->next_to_use = 0; |
|
2100 |
|
2101 writel(0, hw->hw_addr + rx_ring->rdh); |
|
2102 writel(0, hw->hw_addr + rx_ring->rdt); |
|
2103 } |
|
2104 |
|
2105 /** |
|
2106 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
2107 * @adapter: board private structure |
|
2108 **/ |
|
2109 |
|
2110 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
2111 { |
|
2112 int i; |
|
2113 |
|
2114 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2115 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
2116 } |
|
2117 |
|
2118 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2119 * and memory write and invalidate disabled for certain operations |
|
2120 */ |
|
2121 static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2122 { |
|
2123 struct e1000_hw *hw = &adapter->hw; |
|
2124 struct net_device *netdev = adapter->netdev; |
|
2125 u32 rctl; |
|
2126 |
|
2127 e1000_pci_clear_mwi(hw); |
|
2128 |
|
2129 rctl = er32(RCTL); |
|
2130 rctl |= E1000_RCTL_RST; |
|
2131 ew32(RCTL, rctl); |
|
2132 E1000_WRITE_FLUSH(); |
|
2133 mdelay(5); |
|
2134 |
|
2135 if (!adapter->ecdev && netif_running(netdev)) |
|
2136 e1000_clean_all_rx_rings(adapter); |
|
2137 } |
|
2138 |
|
2139 static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2140 { |
|
2141 struct e1000_hw *hw = &adapter->hw; |
|
2142 struct net_device *netdev = adapter->netdev; |
|
2143 u32 rctl; |
|
2144 |
|
2145 rctl = er32(RCTL); |
|
2146 rctl &= ~E1000_RCTL_RST; |
|
2147 ew32(RCTL, rctl); |
|
2148 E1000_WRITE_FLUSH(); |
|
2149 mdelay(5); |
|
2150 |
|
2151 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2152 e1000_pci_set_mwi(hw); |
|
2153 |
|
2154 if (!adapter->netdev && netif_running(netdev)) { |
|
2155 /* No need to loop, because 82542 supports only 1 queue */ |
|
2156 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2157 e1000_configure_rx(adapter); |
|
2158 if (adapter->ecdev) { |
|
2159 /* fill rx ring completely! */ |
|
2160 adapter->alloc_rx_buf(adapter, ring, ring->count); |
|
2161 } else { |
|
2162 /* this one leaves the last ring element unallocated! */ |
|
2163 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2164 } |
|
2165 |
|
2166 } |
|
2167 } |
|
2168 |
|
2169 /** |
|
2170 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2171 * @netdev: network interface device structure |
|
2172 * @p: pointer to an address structure |
|
2173 * |
|
2174 * Returns 0 on success, negative on failure |
|
2175 **/ |
|
2176 |
|
2177 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
2178 { |
|
2179 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2180 struct e1000_hw *hw = &adapter->hw; |
|
2181 struct sockaddr *addr = p; |
|
2182 |
|
2183 if (!is_valid_ether_addr(addr->sa_data)) |
|
2184 return -EADDRNOTAVAIL; |
|
2185 |
|
2186 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2187 |
|
2188 if (hw->mac_type == e1000_82542_rev2_0) |
|
2189 e1000_enter_82542_rst(adapter); |
|
2190 |
|
2191 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2192 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
|
2193 |
|
2194 e1000_rar_set(hw, hw->mac_addr, 0); |
|
2195 |
|
2196 if (hw->mac_type == e1000_82542_rev2_0) |
|
2197 e1000_leave_82542_rst(adapter); |
|
2198 |
|
2199 return 0; |
|
2200 } |
|
2201 |
|
2202 /** |
|
2203 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
|
2204 * @netdev: network interface device structure |
|
2205 * |
|
2206 * The set_rx_mode entry point is called whenever the unicast or multicast |
|
2207 * address lists or the network interface flags are updated. This routine is |
|
2208 * responsible for configuring the hardware for proper unicast, multicast, |
|
2209 * promiscuous mode, and all-multi behavior. |
|
2210 **/ |
|
2211 |
|
2212 static void e1000_set_rx_mode(struct net_device *netdev) |
|
2213 { |
|
2214 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2215 struct e1000_hw *hw = &adapter->hw; |
|
2216 struct netdev_hw_addr *ha; |
|
2217 bool use_uc = false; |
|
2218 u32 rctl; |
|
2219 u32 hash_value; |
|
2220 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2221 int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
|
2222 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
|
2223 |
|
2224 if (!mcarray) { |
|
2225 e_err(probe, "memory allocation failed\n"); |
|
2226 return; |
|
2227 } |
|
2228 |
|
2229 /* Check for Promiscuous and All Multicast modes */ |
|
2230 |
|
2231 rctl = er32(RCTL); |
|
2232 |
|
2233 if (netdev->flags & IFF_PROMISC) { |
|
2234 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2235 rctl &= ~E1000_RCTL_VFE; |
|
2236 } else { |
|
2237 if (netdev->flags & IFF_ALLMULTI) |
|
2238 rctl |= E1000_RCTL_MPE; |
|
2239 else |
|
2240 rctl &= ~E1000_RCTL_MPE; |
|
2241 /* Enable VLAN filter if there is a VLAN */ |
|
2242 if (adapter->vlgrp) |
|
2243 rctl |= E1000_RCTL_VFE; |
|
2244 } |
|
2245 |
|
2246 if (netdev_uc_count(netdev) > rar_entries - 1) { |
|
2247 rctl |= E1000_RCTL_UPE; |
|
2248 } else if (!(netdev->flags & IFF_PROMISC)) { |
|
2249 rctl &= ~E1000_RCTL_UPE; |
|
2250 use_uc = true; |
|
2251 } |
|
2252 |
|
2253 ew32(RCTL, rctl); |
|
2254 |
|
2255 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2256 |
|
2257 if (hw->mac_type == e1000_82542_rev2_0) |
|
2258 e1000_enter_82542_rst(adapter); |
|
2259 |
|
2260 /* load the first 14 addresses into the exact filters 1-14. Unicast |
|
2261 * addresses take precedence to avoid disabling unicast filtering |
|
2262 * when possible. |
|
2263 * |
|
2264 * RAR 0 is used for the station MAC adddress |
|
2265 * if there are not 14 addresses, go ahead and clear the filters |
|
2266 */ |
|
2267 i = 1; |
|
2268 if (use_uc) |
|
2269 netdev_for_each_uc_addr(ha, netdev) { |
|
2270 if (i == rar_entries) |
|
2271 break; |
|
2272 e1000_rar_set(hw, ha->addr, i++); |
|
2273 } |
|
2274 |
|
2275 netdev_for_each_mc_addr(ha, netdev) { |
|
2276 if (i == rar_entries) { |
|
2277 /* load any remaining addresses into the hash table */ |
|
2278 u32 hash_reg, hash_bit, mta; |
|
2279 hash_value = e1000_hash_mc_addr(hw, ha->addr); |
|
2280 hash_reg = (hash_value >> 5) & 0x7F; |
|
2281 hash_bit = hash_value & 0x1F; |
|
2282 mta = (1 << hash_bit); |
|
2283 mcarray[hash_reg] |= mta; |
|
2284 } else { |
|
2285 e1000_rar_set(hw, ha->addr, i++); |
|
2286 } |
|
2287 } |
|
2288 |
|
2289 for (; i < rar_entries; i++) { |
|
2290 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2291 E1000_WRITE_FLUSH(); |
|
2292 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2293 E1000_WRITE_FLUSH(); |
|
2294 } |
|
2295 |
|
2296 /* write the hash table completely, write from bottom to avoid |
|
2297 * both stupid write combining chipsets, and flushing each write */ |
|
2298 for (i = mta_reg_count - 1; i >= 0 ; i--) { |
|
2299 /* |
|
2300 * If we are on an 82544 has an errata where writing odd |
|
2301 * offsets overwrites the previous even offset, but writing |
|
2302 * backwards over the range solves the issue by always |
|
2303 * writing the odd offset first |
|
2304 */ |
|
2305 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); |
|
2306 } |
|
2307 E1000_WRITE_FLUSH(); |
|
2308 |
|
2309 if (hw->mac_type == e1000_82542_rev2_0) |
|
2310 e1000_leave_82542_rst(adapter); |
|
2311 |
|
2312 kfree(mcarray); |
|
2313 } |
|
2314 |
|
2315 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2316 * the phy */ |
|
2317 |
|
2318 static void e1000_update_phy_info(unsigned long data) |
|
2319 { |
|
2320 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2321 schedule_work(&adapter->phy_info_task); |
|
2322 } |
|
2323 |
|
2324 static void e1000_update_phy_info_task(struct work_struct *work) |
|
2325 { |
|
2326 struct e1000_adapter *adapter = container_of(work, |
|
2327 struct e1000_adapter, |
|
2328 phy_info_task); |
|
2329 struct e1000_hw *hw = &adapter->hw; |
|
2330 |
|
2331 rtnl_lock(); |
|
2332 e1000_phy_get_info(hw, &adapter->phy_info); |
|
2333 rtnl_unlock(); |
|
2334 } |
|
2335 |
|
2336 /** |
|
2337 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2338 * @data: pointer to adapter cast into an unsigned long |
|
2339 **/ |
|
2340 static void e1000_82547_tx_fifo_stall(unsigned long data) |
|
2341 { |
|
2342 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2343 schedule_work(&adapter->fifo_stall_task); |
|
2344 } |
|
2345 |
|
2346 /** |
|
2347 * e1000_82547_tx_fifo_stall_task - task to complete work |
|
2348 * @work: work struct contained inside adapter struct |
|
2349 **/ |
|
2350 static void e1000_82547_tx_fifo_stall_task(struct work_struct *work) |
|
2351 { |
|
2352 struct e1000_adapter *adapter = container_of(work, |
|
2353 struct e1000_adapter, |
|
2354 fifo_stall_task); |
|
2355 struct e1000_hw *hw = &adapter->hw; |
|
2356 struct net_device *netdev = adapter->netdev; |
|
2357 u32 tctl; |
|
2358 |
|
2359 rtnl_lock(); |
|
2360 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2361 if ((er32(TDT) == er32(TDH)) && |
|
2362 (er32(TDFT) == er32(TDFH)) && |
|
2363 (er32(TDFTS) == er32(TDFHS))) { |
|
2364 tctl = er32(TCTL); |
|
2365 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
2366 ew32(TDFT, adapter->tx_head_addr); |
|
2367 ew32(TDFH, adapter->tx_head_addr); |
|
2368 ew32(TDFTS, adapter->tx_head_addr); |
|
2369 ew32(TDFHS, adapter->tx_head_addr); |
|
2370 ew32(TCTL, tctl); |
|
2371 E1000_WRITE_FLUSH(); |
|
2372 |
|
2373 adapter->tx_fifo_head = 0; |
|
2374 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2375 if (!adapter->ecdev) netif_wake_queue(netdev); |
|
2376 } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
|
2377 if (!adapter->ecdev) |
|
2378 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2379 } |
|
2380 } |
|
2381 rtnl_unlock(); |
|
2382 } |
|
2383 |
|
2384 bool e1000_has_link(struct e1000_adapter *adapter) |
|
2385 { |
|
2386 struct e1000_hw *hw = &adapter->hw; |
|
2387 bool link_active = false; |
|
2388 |
|
2389 /* get_link_status is set on LSC (link status) interrupt or |
|
2390 * rx sequence error interrupt. get_link_status will stay |
|
2391 * false until the e1000_check_for_link establishes link |
|
2392 * for copper adapters ONLY |
|
2393 */ |
|
2394 switch (hw->media_type) { |
|
2395 case e1000_media_type_copper: |
|
2396 if (hw->get_link_status) { |
|
2397 e1000_check_for_link(hw); |
|
2398 link_active = !hw->get_link_status; |
|
2399 } else { |
|
2400 link_active = true; |
|
2401 } |
|
2402 break; |
|
2403 case e1000_media_type_fiber: |
|
2404 e1000_check_for_link(hw); |
|
2405 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
2406 break; |
|
2407 case e1000_media_type_internal_serdes: |
|
2408 e1000_check_for_link(hw); |
|
2409 link_active = hw->serdes_has_link; |
|
2410 break; |
|
2411 default: |
|
2412 break; |
|
2413 } |
|
2414 |
|
2415 return link_active; |
|
2416 } |
|
2417 |
|
2418 /** |
|
2419 * e1000_watchdog - Timer Call-back |
|
2420 * @data: pointer to adapter cast into an unsigned long |
|
2421 **/ |
|
2422 static void e1000_watchdog(unsigned long data) |
|
2423 { |
|
2424 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2425 struct e1000_hw *hw = &adapter->hw; |
|
2426 struct net_device *netdev = adapter->netdev; |
|
2427 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2428 u32 link, tctl; |
|
2429 |
|
2430 link = e1000_has_link(adapter); |
|
2431 if (!adapter->ecdev && (netif_carrier_ok(netdev)) && link) |
|
2432 goto link_up; |
|
2433 |
|
2434 if (link) { |
|
2435 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
2436 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
2437 u32 ctrl; |
|
2438 bool txb2b = true; |
|
2439 /* update snapshot of PHY registers on LSC */ |
|
2440 e1000_get_speed_and_duplex(hw, |
|
2441 &adapter->link_speed, |
|
2442 &adapter->link_duplex); |
|
2443 |
|
2444 ctrl = er32(CTRL); |
|
2445 pr_info("%s NIC Link is Up %d Mbps %s, " |
|
2446 "Flow Control: %s\n", |
|
2447 netdev->name, |
|
2448 adapter->link_speed, |
|
2449 adapter->link_duplex == FULL_DUPLEX ? |
|
2450 "Full Duplex" : "Half Duplex", |
|
2451 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2452 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2453 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2454 E1000_CTRL_TFCE) ? "TX" : "None"))); |
|
2455 |
|
2456 /* adjust timeout factor according to speed/duplex */ |
|
2457 adapter->tx_timeout_factor = 1; |
|
2458 switch (adapter->link_speed) { |
|
2459 case SPEED_10: |
|
2460 txb2b = false; |
|
2461 adapter->tx_timeout_factor = 16; |
|
2462 break; |
|
2463 case SPEED_100: |
|
2464 txb2b = false; |
|
2465 /* maybe add some timeout factor ? */ |
|
2466 break; |
|
2467 } |
|
2468 |
|
2469 /* enable transmits in the hardware */ |
|
2470 tctl = er32(TCTL); |
|
2471 tctl |= E1000_TCTL_EN; |
|
2472 ew32(TCTL, tctl); |
|
2473 |
|
2474 if (adapter->ecdev) { |
|
2475 ecdev_set_link(adapter->ecdev, 1); |
|
2476 } else { |
|
2477 netif_carrier_on(netdev); |
|
2478 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2479 mod_timer(&adapter->phy_info_timer, |
|
2480 round_jiffies(jiffies + 2 * HZ)); |
|
2481 } |
|
2482 adapter->smartspeed = 0; |
|
2483 } |
|
2484 } else { |
|
2485 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
2486 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
2487 adapter->link_speed = 0; |
|
2488 adapter->link_duplex = 0; |
|
2489 pr_info("%s NIC Link is Down\n", |
|
2490 netdev->name); |
|
2491 if (adapter->ecdev) { |
|
2492 ecdev_set_link(adapter->ecdev, 0); |
|
2493 } else { |
|
2494 netif_carrier_off(netdev); |
|
2495 |
|
2496 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2497 mod_timer(&adapter->phy_info_timer, |
|
2498 round_jiffies(jiffies + 2 * HZ)); |
|
2499 } |
|
2500 } |
|
2501 |
|
2502 e1000_smartspeed(adapter); |
|
2503 } |
|
2504 |
|
2505 link_up: |
|
2506 e1000_update_stats(adapter); |
|
2507 |
|
2508 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2509 adapter->tpt_old = adapter->stats.tpt; |
|
2510 hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2511 adapter->colc_old = adapter->stats.colc; |
|
2512 |
|
2513 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2514 adapter->gorcl_old = adapter->stats.gorcl; |
|
2515 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2516 adapter->gotcl_old = adapter->stats.gotcl; |
|
2517 |
|
2518 e1000_update_adaptive(hw); |
|
2519 |
|
2520 if (!adapter->ecdev && !netif_carrier_ok(netdev)) { |
|
2521 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2522 /* We've lost link, so the controller stops DMA, |
|
2523 * but we've got queued Tx work that's never going |
|
2524 * to get done, so reset controller to flush Tx. |
|
2525 * (Do the reset outside of interrupt context). */ |
|
2526 adapter->tx_timeout_count++; |
|
2527 schedule_work(&adapter->reset_task); |
|
2528 /* return immediately since reset is imminent */ |
|
2529 return; |
|
2530 } |
|
2531 } |
|
2532 |
|
2533 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
2534 if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { |
|
2535 /* |
|
2536 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
2537 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
2538 * everyone else is between 2000-8000. |
|
2539 */ |
|
2540 u32 goc = (adapter->gotcl + adapter->gorcl) / 10000; |
|
2541 u32 dif = (adapter->gotcl > adapter->gorcl ? |
|
2542 adapter->gotcl - adapter->gorcl : |
|
2543 adapter->gorcl - adapter->gotcl) / 10000; |
|
2544 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
2545 |
|
2546 ew32(ITR, 1000000000 / (itr * 256)); |
|
2547 } |
|
2548 |
|
2549 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2550 ew32(ICS, E1000_ICS_RXDMT0); |
|
2551 |
|
2552 /* Force detection of hung controller every watchdog period */ |
|
2553 if (!adapter->ecdev) adapter->detect_tx_hung = true; |
|
2554 |
|
2555 /* Reset the timer */ |
|
2556 if (!adapter->ecdev) { |
|
2557 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2558 mod_timer(&adapter->watchdog_timer, |
|
2559 round_jiffies(jiffies + 2 * HZ)); |
|
2560 } |
|
2561 } |
|
2562 |
|
2563 enum latency_range { |
|
2564 lowest_latency = 0, |
|
2565 low_latency = 1, |
|
2566 bulk_latency = 2, |
|
2567 latency_invalid = 255 |
|
2568 }; |
|
2569 |
|
2570 /** |
|
2571 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2572 * @adapter: pointer to adapter |
|
2573 * @itr_setting: current adapter->itr |
|
2574 * @packets: the number of packets during this measurement interval |
|
2575 * @bytes: the number of bytes during this measurement interval |
|
2576 * |
|
2577 * Stores a new ITR value based on packets and byte |
|
2578 * counts during the last interrupt. The advantage of per interrupt |
|
2579 * computation is faster updates and more accurate ITR for the current |
|
2580 * traffic pattern. Constants in this function were computed |
|
2581 * based on theoretical maximum wire speed and thresholds were set based |
|
2582 * on testing data as well as attempting to minimize response time |
|
2583 * while increasing bulk throughput. |
|
2584 * this functionality is controlled by the InterruptThrottleRate module |
|
2585 * parameter (see e1000_param.c) |
|
2586 **/ |
|
2587 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2588 u16 itr_setting, int packets, int bytes) |
|
2589 { |
|
2590 unsigned int retval = itr_setting; |
|
2591 struct e1000_hw *hw = &adapter->hw; |
|
2592 |
|
2593 if (unlikely(hw->mac_type < e1000_82540)) |
|
2594 goto update_itr_done; |
|
2595 |
|
2596 if (packets == 0) |
|
2597 goto update_itr_done; |
|
2598 |
|
2599 switch (itr_setting) { |
|
2600 case lowest_latency: |
|
2601 /* jumbo frames get bulk treatment*/ |
|
2602 if (bytes/packets > 8000) |
|
2603 retval = bulk_latency; |
|
2604 else if ((packets < 5) && (bytes > 512)) |
|
2605 retval = low_latency; |
|
2606 break; |
|
2607 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2608 if (bytes > 10000) { |
|
2609 /* jumbo frames need bulk latency setting */ |
|
2610 if (bytes/packets > 8000) |
|
2611 retval = bulk_latency; |
|
2612 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2613 retval = bulk_latency; |
|
2614 else if ((packets > 35)) |
|
2615 retval = lowest_latency; |
|
2616 } else if (bytes/packets > 2000) |
|
2617 retval = bulk_latency; |
|
2618 else if (packets <= 2 && bytes < 512) |
|
2619 retval = lowest_latency; |
|
2620 break; |
|
2621 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2622 if (bytes > 25000) { |
|
2623 if (packets > 35) |
|
2624 retval = low_latency; |
|
2625 } else if (bytes < 6000) { |
|
2626 retval = low_latency; |
|
2627 } |
|
2628 break; |
|
2629 } |
|
2630 |
|
2631 update_itr_done: |
|
2632 return retval; |
|
2633 } |
|
2634 |
|
2635 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2636 { |
|
2637 struct e1000_hw *hw = &adapter->hw; |
|
2638 u16 current_itr; |
|
2639 u32 new_itr = adapter->itr; |
|
2640 |
|
2641 if (unlikely(hw->mac_type < e1000_82540)) |
|
2642 return; |
|
2643 |
|
2644 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2645 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2646 current_itr = 0; |
|
2647 new_itr = 4000; |
|
2648 goto set_itr_now; |
|
2649 } |
|
2650 |
|
2651 adapter->tx_itr = e1000_update_itr(adapter, |
|
2652 adapter->tx_itr, |
|
2653 adapter->total_tx_packets, |
|
2654 adapter->total_tx_bytes); |
|
2655 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2656 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2657 adapter->tx_itr = low_latency; |
|
2658 |
|
2659 adapter->rx_itr = e1000_update_itr(adapter, |
|
2660 adapter->rx_itr, |
|
2661 adapter->total_rx_packets, |
|
2662 adapter->total_rx_bytes); |
|
2663 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2664 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2665 adapter->rx_itr = low_latency; |
|
2666 |
|
2667 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2668 |
|
2669 switch (current_itr) { |
|
2670 /* counts and packets in update_itr are dependent on these numbers */ |
|
2671 case lowest_latency: |
|
2672 new_itr = 70000; |
|
2673 break; |
|
2674 case low_latency: |
|
2675 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2676 break; |
|
2677 case bulk_latency: |
|
2678 new_itr = 4000; |
|
2679 break; |
|
2680 default: |
|
2681 break; |
|
2682 } |
|
2683 |
|
2684 set_itr_now: |
|
2685 if (new_itr != adapter->itr) { |
|
2686 /* this attempts to bias the interrupt rate towards Bulk |
|
2687 * by adding intermediate steps when interrupt rate is |
|
2688 * increasing */ |
|
2689 new_itr = new_itr > adapter->itr ? |
|
2690 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2691 new_itr; |
|
2692 adapter->itr = new_itr; |
|
2693 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2694 } |
|
2695 } |
|
2696 |
|
2697 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2698 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2699 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2700 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2701 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2702 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2703 |
|
2704 static int e1000_tso(struct e1000_adapter *adapter, |
|
2705 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2706 { |
|
2707 struct e1000_context_desc *context_desc; |
|
2708 struct e1000_buffer *buffer_info; |
|
2709 unsigned int i; |
|
2710 u32 cmd_length = 0; |
|
2711 u16 ipcse = 0, tucse, mss; |
|
2712 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
2713 int err; |
|
2714 |
|
2715 if (skb_is_gso(skb)) { |
|
2716 if (skb_header_cloned(skb)) { |
|
2717 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2718 if (err) |
|
2719 return err; |
|
2720 } |
|
2721 |
|
2722 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2723 mss = skb_shinfo(skb)->gso_size; |
|
2724 if (skb->protocol == htons(ETH_P_IP)) { |
|
2725 struct iphdr *iph = ip_hdr(skb); |
|
2726 iph->tot_len = 0; |
|
2727 iph->check = 0; |
|
2728 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2729 iph->daddr, 0, |
|
2730 IPPROTO_TCP, |
|
2731 0); |
|
2732 cmd_length = E1000_TXD_CMD_IP; |
|
2733 ipcse = skb_transport_offset(skb) - 1; |
|
2734 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2735 ipv6_hdr(skb)->payload_len = 0; |
|
2736 tcp_hdr(skb)->check = |
|
2737 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2738 &ipv6_hdr(skb)->daddr, |
|
2739 0, IPPROTO_TCP, 0); |
|
2740 ipcse = 0; |
|
2741 } |
|
2742 ipcss = skb_network_offset(skb); |
|
2743 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2744 tucss = skb_transport_offset(skb); |
|
2745 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2746 tucse = 0; |
|
2747 |
|
2748 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2749 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2750 |
|
2751 i = tx_ring->next_to_use; |
|
2752 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2753 buffer_info = &tx_ring->buffer_info[i]; |
|
2754 |
|
2755 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2756 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2757 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2758 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2759 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2760 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2761 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2762 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2763 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2764 |
|
2765 buffer_info->time_stamp = jiffies; |
|
2766 buffer_info->next_to_watch = i; |
|
2767 |
|
2768 if (++i == tx_ring->count) i = 0; |
|
2769 tx_ring->next_to_use = i; |
|
2770 |
|
2771 return true; |
|
2772 } |
|
2773 return false; |
|
2774 } |
|
2775 |
|
2776 static bool e1000_tx_csum(struct e1000_adapter *adapter, |
|
2777 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2778 { |
|
2779 struct e1000_context_desc *context_desc; |
|
2780 struct e1000_buffer *buffer_info; |
|
2781 unsigned int i; |
|
2782 u8 css; |
|
2783 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
2784 |
|
2785 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
2786 return false; |
|
2787 |
|
2788 switch (skb->protocol) { |
|
2789 case cpu_to_be16(ETH_P_IP): |
|
2790 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
2791 cmd_len |= E1000_TXD_CMD_TCP; |
|
2792 break; |
|
2793 case cpu_to_be16(ETH_P_IPV6): |
|
2794 /* XXX not handling all IPV6 headers */ |
|
2795 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
2796 cmd_len |= E1000_TXD_CMD_TCP; |
|
2797 break; |
|
2798 default: |
|
2799 if (unlikely(net_ratelimit())) |
|
2800 e_warn(drv, "checksum_partial proto=%x!\n", |
|
2801 skb->protocol); |
|
2802 break; |
|
2803 } |
|
2804 |
|
2805 css = skb_transport_offset(skb); |
|
2806 |
|
2807 i = tx_ring->next_to_use; |
|
2808 buffer_info = &tx_ring->buffer_info[i]; |
|
2809 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2810 |
|
2811 context_desc->lower_setup.ip_config = 0; |
|
2812 context_desc->upper_setup.tcp_fields.tucss = css; |
|
2813 context_desc->upper_setup.tcp_fields.tucso = |
|
2814 css + skb->csum_offset; |
|
2815 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
2816 context_desc->tcp_seg_setup.data = 0; |
|
2817 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
2818 |
|
2819 buffer_info->time_stamp = jiffies; |
|
2820 buffer_info->next_to_watch = i; |
|
2821 |
|
2822 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2823 tx_ring->next_to_use = i; |
|
2824 |
|
2825 return true; |
|
2826 } |
|
2827 |
|
2828 #define E1000_MAX_TXD_PWR 12 |
|
2829 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
2830 |
|
2831 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
2832 struct e1000_tx_ring *tx_ring, |
|
2833 struct sk_buff *skb, unsigned int first, |
|
2834 unsigned int max_per_txd, unsigned int nr_frags, |
|
2835 unsigned int mss) |
|
2836 { |
|
2837 struct e1000_hw *hw = &adapter->hw; |
|
2838 struct pci_dev *pdev = adapter->pdev; |
|
2839 struct e1000_buffer *buffer_info; |
|
2840 unsigned int len = skb_headlen(skb); |
|
2841 unsigned int offset = 0, size, count = 0, i; |
|
2842 unsigned int f; |
|
2843 |
|
2844 i = tx_ring->next_to_use; |
|
2845 |
|
2846 while (len) { |
|
2847 buffer_info = &tx_ring->buffer_info[i]; |
|
2848 size = min(len, max_per_txd); |
|
2849 /* Workaround for Controller erratum -- |
|
2850 * descriptor for non-tso packet in a linear SKB that follows a |
|
2851 * tso gets written back prematurely before the data is fully |
|
2852 * DMA'd to the controller */ |
|
2853 if (!skb->data_len && tx_ring->last_tx_tso && |
|
2854 !skb_is_gso(skb)) { |
|
2855 tx_ring->last_tx_tso = 0; |
|
2856 size -= 4; |
|
2857 } |
|
2858 |
|
2859 /* Workaround for premature desc write-backs |
|
2860 * in TSO mode. Append 4-byte sentinel desc */ |
|
2861 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
2862 size -= 4; |
|
2863 /* work-around for errata 10 and it applies |
|
2864 * to all controllers in PCI-X mode |
|
2865 * The fix is to make sure that the first descriptor of a |
|
2866 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
2867 */ |
|
2868 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
2869 (size > 2015) && count == 0)) |
|
2870 size = 2015; |
|
2871 |
|
2872 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
2873 * terminating buffers within evenly-aligned dwords. */ |
|
2874 if (unlikely(adapter->pcix_82544 && |
|
2875 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
2876 size > 4)) |
|
2877 size -= 4; |
|
2878 |
|
2879 buffer_info->length = size; |
|
2880 /* set time_stamp *before* dma to help avoid a possible race */ |
|
2881 buffer_info->time_stamp = jiffies; |
|
2882 buffer_info->mapped_as_page = false; |
|
2883 buffer_info->dma = dma_map_single(&pdev->dev, |
|
2884 skb->data + offset, |
|
2885 size, DMA_TO_DEVICE); |
|
2886 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
2887 goto dma_error; |
|
2888 buffer_info->next_to_watch = i; |
|
2889 |
|
2890 len -= size; |
|
2891 offset += size; |
|
2892 count++; |
|
2893 if (len) { |
|
2894 i++; |
|
2895 if (unlikely(i == tx_ring->count)) |
|
2896 i = 0; |
|
2897 } |
|
2898 } |
|
2899 |
|
2900 for (f = 0; f < nr_frags; f++) { |
|
2901 struct skb_frag_struct *frag; |
|
2902 |
|
2903 frag = &skb_shinfo(skb)->frags[f]; |
|
2904 len = frag->size; |
|
2905 offset = frag->page_offset; |
|
2906 |
|
2907 while (len) { |
|
2908 i++; |
|
2909 if (unlikely(i == tx_ring->count)) |
|
2910 i = 0; |
|
2911 |
|
2912 buffer_info = &tx_ring->buffer_info[i]; |
|
2913 size = min(len, max_per_txd); |
|
2914 /* Workaround for premature desc write-backs |
|
2915 * in TSO mode. Append 4-byte sentinel desc */ |
|
2916 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
2917 size -= 4; |
|
2918 /* Workaround for potential 82544 hang in PCI-X. |
|
2919 * Avoid terminating buffers within evenly-aligned |
|
2920 * dwords. */ |
|
2921 if (unlikely(adapter->pcix_82544 && |
|
2922 !((unsigned long)(page_to_phys(frag->page) + offset |
|
2923 + size - 1) & 4) && |
|
2924 size > 4)) |
|
2925 size -= 4; |
|
2926 |
|
2927 buffer_info->length = size; |
|
2928 buffer_info->time_stamp = jiffies; |
|
2929 buffer_info->mapped_as_page = true; |
|
2930 buffer_info->dma = dma_map_page(&pdev->dev, frag->page, |
|
2931 offset, size, |
|
2932 DMA_TO_DEVICE); |
|
2933 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
2934 goto dma_error; |
|
2935 buffer_info->next_to_watch = i; |
|
2936 |
|
2937 len -= size; |
|
2938 offset += size; |
|
2939 count++; |
|
2940 } |
|
2941 } |
|
2942 |
|
2943 tx_ring->buffer_info[i].skb = skb; |
|
2944 tx_ring->buffer_info[first].next_to_watch = i; |
|
2945 |
|
2946 return count; |
|
2947 |
|
2948 dma_error: |
|
2949 dev_err(&pdev->dev, "TX DMA map failed\n"); |
|
2950 buffer_info->dma = 0; |
|
2951 if (count) |
|
2952 count--; |
|
2953 |
|
2954 while (count--) { |
|
2955 if (i==0) |
|
2956 i += tx_ring->count; |
|
2957 i--; |
|
2958 buffer_info = &tx_ring->buffer_info[i]; |
|
2959 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
2960 } |
|
2961 |
|
2962 return 0; |
|
2963 } |
|
2964 |
|
2965 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
2966 struct e1000_tx_ring *tx_ring, int tx_flags, |
|
2967 int count) |
|
2968 { |
|
2969 struct e1000_hw *hw = &adapter->hw; |
|
2970 struct e1000_tx_desc *tx_desc = NULL; |
|
2971 struct e1000_buffer *buffer_info; |
|
2972 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
2973 unsigned int i; |
|
2974 |
|
2975 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
2976 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
2977 E1000_TXD_CMD_TSE; |
|
2978 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2979 |
|
2980 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
2981 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
2982 } |
|
2983 |
|
2984 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
2985 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
2986 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2987 } |
|
2988 |
|
2989 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
2990 txd_lower |= E1000_TXD_CMD_VLE; |
|
2991 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
2992 } |
|
2993 |
|
2994 i = tx_ring->next_to_use; |
|
2995 |
|
2996 while (count--) { |
|
2997 buffer_info = &tx_ring->buffer_info[i]; |
|
2998 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
2999 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
3000 tx_desc->lower.data = |
|
3001 cpu_to_le32(txd_lower | buffer_info->length); |
|
3002 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
3003 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3004 } |
|
3005 |
|
3006 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
3007 |
|
3008 /* Force memory writes to complete before letting h/w |
|
3009 * know there are new descriptors to fetch. (Only |
|
3010 * applicable for weak-ordered memory model archs, |
|
3011 * such as IA-64). */ |
|
3012 wmb(); |
|
3013 |
|
3014 tx_ring->next_to_use = i; |
|
3015 writel(i, hw->hw_addr + tx_ring->tdt); |
|
3016 /* we need this if more than one processor can write to our tail |
|
3017 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
3018 mmiowb(); |
|
3019 } |
|
3020 |
|
3021 /** |
|
3022 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
3023 * The workaround is to avoid queuing a large packet that would span |
|
3024 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
3025 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
3026 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
3027 * to the beginning of the Tx FIFO. |
|
3028 **/ |
|
3029 |
|
3030 #define E1000_FIFO_HDR 0x10 |
|
3031 #define E1000_82547_PAD_LEN 0x3E0 |
|
3032 |
|
3033 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
|
3034 struct sk_buff *skb) |
|
3035 { |
|
3036 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
3037 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
3038 |
|
3039 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
3040 |
|
3041 if (adapter->link_duplex != HALF_DUPLEX) |
|
3042 goto no_fifo_stall_required; |
|
3043 |
|
3044 if (atomic_read(&adapter->tx_fifo_stall)) |
|
3045 return 1; |
|
3046 |
|
3047 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
3048 atomic_set(&adapter->tx_fifo_stall, 1); |
|
3049 return 1; |
|
3050 } |
|
3051 |
|
3052 no_fifo_stall_required: |
|
3053 adapter->tx_fifo_head += skb_fifo_len; |
|
3054 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
3055 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
3056 return 0; |
|
3057 } |
|
3058 |
|
3059 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
3060 { |
|
3061 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3062 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
3063 |
|
3064 netif_stop_queue(netdev); |
|
3065 /* Herbert's original patch had: |
|
3066 * smp_mb__after_netif_stop_queue(); |
|
3067 * but since that doesn't exist yet, just open code it. */ |
|
3068 smp_mb(); |
|
3069 |
|
3070 /* We need to check again in a case another CPU has just |
|
3071 * made room available. */ |
|
3072 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
3073 return -EBUSY; |
|
3074 |
|
3075 /* A reprieve! */ |
|
3076 netif_start_queue(netdev); |
|
3077 ++adapter->restart_queue; |
|
3078 return 0; |
|
3079 } |
|
3080 |
|
3081 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
3082 struct e1000_tx_ring *tx_ring, int size) |
|
3083 { |
|
3084 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
3085 return 0; |
|
3086 return __e1000_maybe_stop_tx(netdev, size); |
|
3087 } |
|
3088 |
|
3089 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
3090 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
3091 struct net_device *netdev) |
|
3092 { |
|
3093 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3094 struct e1000_hw *hw = &adapter->hw; |
|
3095 struct e1000_tx_ring *tx_ring; |
|
3096 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
3097 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
3098 unsigned int tx_flags = 0; |
|
3099 unsigned int len = skb_headlen(skb); |
|
3100 unsigned int nr_frags; |
|
3101 unsigned int mss; |
|
3102 int count = 0; |
|
3103 int tso; |
|
3104 unsigned int f; |
|
3105 |
|
3106 /* This goes back to the question of how to logically map a tx queue |
|
3107 * to a flow. Right now, performance is impacted slightly negatively |
|
3108 * if using multiple tx queues. If the stack breaks away from a |
|
3109 * single qdisc implementation, we can look at this again. */ |
|
3110 tx_ring = adapter->tx_ring; |
|
3111 |
|
3112 if (unlikely(skb->len <= 0)) { |
|
3113 if (!adapter->ecdev) |
|
3114 dev_kfree_skb_any(skb); |
|
3115 return NETDEV_TX_OK; |
|
3116 } |
|
3117 |
|
3118 mss = skb_shinfo(skb)->gso_size; |
|
3119 /* The controller does a simple calculation to |
|
3120 * make sure there is enough room in the FIFO before |
|
3121 * initiating the DMA for each buffer. The calc is: |
|
3122 * 4 = ceil(buffer len/mss). To make sure we don't |
|
3123 * overrun the FIFO, adjust the max buffer len if mss |
|
3124 * drops. */ |
|
3125 if (mss) { |
|
3126 u8 hdr_len; |
|
3127 max_per_txd = min(mss << 2, max_per_txd); |
|
3128 max_txd_pwr = fls(max_per_txd) - 1; |
|
3129 |
|
3130 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
3131 if (skb->data_len && hdr_len == len) { |
|
3132 switch (hw->mac_type) { |
|
3133 unsigned int pull_size; |
|
3134 case e1000_82544: |
|
3135 /* Make sure we have room to chop off 4 bytes, |
|
3136 * and that the end alignment will work out to |
|
3137 * this hardware's requirements |
|
3138 * NOTE: this is a TSO only workaround |
|
3139 * if end byte alignment not correct move us |
|
3140 * into the next dword */ |
|
3141 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
3142 break; |
|
3143 /* fall through */ |
|
3144 pull_size = min((unsigned int)4, skb->data_len); |
|
3145 if (!__pskb_pull_tail(skb, pull_size)) { |
|
3146 e_err(drv, "__pskb_pull_tail " |
|
3147 "failed.\n"); |
|
3148 dev_kfree_skb_any(skb); |
|
3149 return NETDEV_TX_OK; |
|
3150 } |
|
3151 len = skb_headlen(skb); |
|
3152 break; |
|
3153 default: |
|
3154 /* do nothing */ |
|
3155 break; |
|
3156 } |
|
3157 } |
|
3158 } |
|
3159 |
|
3160 /* reserve a descriptor for the offload context */ |
|
3161 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
3162 count++; |
|
3163 count++; |
|
3164 |
|
3165 /* Controller Erratum workaround */ |
|
3166 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
3167 count++; |
|
3168 |
|
3169 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
3170 |
|
3171 if (adapter->pcix_82544) |
|
3172 count++; |
|
3173 |
|
3174 /* work-around for errata 10 and it applies to all controllers |
|
3175 * in PCI-X mode, so add one more descriptor to the count |
|
3176 */ |
|
3177 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
3178 (len > 2015))) |
|
3179 count++; |
|
3180 |
|
3181 nr_frags = skb_shinfo(skb)->nr_frags; |
|
3182 for (f = 0; f < nr_frags; f++) |
|
3183 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3184 max_txd_pwr); |
|
3185 if (adapter->pcix_82544) |
|
3186 count += nr_frags; |
|
3187 |
|
3188 /* need: count + 2 desc gap to keep tail from touching |
|
3189 * head, otherwise try next time */ |
|
3190 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
|
3191 return NETDEV_TX_BUSY; |
|
3192 |
|
3193 if (unlikely(hw->mac_type == e1000_82547)) { |
|
3194 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3195 if (!adapter->ecdev) { |
|
3196 netif_stop_queue(netdev); |
|
3197 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3198 mod_timer(&adapter->tx_fifo_stall_timer, |
|
3199 jiffies + 1); |
|
3200 } |
|
3201 return NETDEV_TX_BUSY; |
|
3202 } |
|
3203 } |
|
3204 |
|
3205 if (unlikely(vlan_tx_tag_present(skb))) { |
|
3206 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3207 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3208 } |
|
3209 |
|
3210 first = tx_ring->next_to_use; |
|
3211 |
|
3212 tso = e1000_tso(adapter, tx_ring, skb); |
|
3213 if (tso < 0) { |
|
3214 if (!adapter->ecdev) { |
|
3215 dev_kfree_skb_any(skb); |
|
3216 } |
|
3217 return NETDEV_TX_OK; |
|
3218 } |
|
3219 |
|
3220 if (likely(tso)) { |
|
3221 if (likely(hw->mac_type != e1000_82544)) |
|
3222 tx_ring->last_tx_tso = 1; |
|
3223 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3224 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3225 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3226 |
|
3227 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3228 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3229 |
|
3230 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
|
3231 nr_frags, mss); |
|
3232 |
|
3233 if (count) { |
|
3234 e1000_tx_queue(adapter, tx_ring, tx_flags, count); |
|
3235 if (!adapter->ecdev) { |
|
3236 /* Make sure there is space in the ring for the next send. */ |
|
3237 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3238 } |
|
3239 |
|
3240 } else { |
|
3241 if (!adapter->ecdev) dev_kfree_skb_any(skb); |
|
3242 tx_ring->buffer_info[first].time_stamp = 0; |
|
3243 tx_ring->next_to_use = first; |
|
3244 } |
|
3245 |
|
3246 return NETDEV_TX_OK; |
|
3247 } |
|
3248 |
|
3249 /** |
|
3250 * e1000_tx_timeout - Respond to a Tx Hang |
|
3251 * @netdev: network interface device structure |
|
3252 **/ |
|
3253 |
|
3254 static void e1000_tx_timeout(struct net_device *netdev) |
|
3255 { |
|
3256 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3257 |
|
3258 /* Do the reset outside of interrupt context */ |
|
3259 adapter->tx_timeout_count++; |
|
3260 schedule_work(&adapter->reset_task); |
|
3261 } |
|
3262 |
|
3263 static void e1000_reset_task(struct work_struct *work) |
|
3264 { |
|
3265 struct e1000_adapter *adapter = |
|
3266 container_of(work, struct e1000_adapter, reset_task); |
|
3267 |
|
3268 e1000_reinit_safe(adapter); |
|
3269 } |
|
3270 |
|
3271 /** |
|
3272 * e1000_get_stats - Get System Network Statistics |
|
3273 * @netdev: network interface device structure |
|
3274 * |
|
3275 * Returns the address of the device statistics structure. |
|
3276 * The statistics are actually updated from the timer callback. |
|
3277 **/ |
|
3278 |
|
3279 static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
|
3280 { |
|
3281 /* only return the current stats */ |
|
3282 return &netdev->stats; |
|
3283 } |
|
3284 |
|
3285 /** |
|
3286 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3287 * @netdev: network interface device structure |
|
3288 * @new_mtu: new value for maximum frame size |
|
3289 * |
|
3290 * Returns 0 on success, negative on failure |
|
3291 **/ |
|
3292 |
|
3293 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3294 { |
|
3295 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3296 struct e1000_hw *hw = &adapter->hw; |
|
3297 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3298 |
|
3299 if (adapter->ecdev) |
|
3300 return -EBUSY; |
|
3301 |
|
3302 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3303 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3304 e_err(probe, "Invalid MTU setting\n"); |
|
3305 return -EINVAL; |
|
3306 } |
|
3307 |
|
3308 /* Adapter-specific max frame size limits. */ |
|
3309 switch (hw->mac_type) { |
|
3310 case e1000_undefined ... e1000_82542_rev2_1: |
|
3311 if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
|
3312 e_err(probe, "Jumbo Frames not supported.\n"); |
|
3313 return -EINVAL; |
|
3314 } |
|
3315 break; |
|
3316 default: |
|
3317 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3318 break; |
|
3319 } |
|
3320 |
|
3321 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
3322 msleep(1); |
|
3323 /* e1000_down has a dependency on max_frame_size */ |
|
3324 hw->max_frame_size = max_frame; |
|
3325 if (netif_running(netdev)) |
|
3326 e1000_down(adapter); |
|
3327 |
|
3328 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3329 * means we reserve 2 more, this pushes us to allocate from the next |
|
3330 * larger slab size. |
|
3331 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
3332 * however with the new *_jumbo_rx* routines, jumbo receives will use |
|
3333 * fragmented skbs */ |
|
3334 |
|
3335 if (max_frame <= E1000_RXBUFFER_2048) |
|
3336 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3337 else |
|
3338 #if (PAGE_SIZE >= E1000_RXBUFFER_16384) |
|
3339 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3340 #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
|
3341 adapter->rx_buffer_len = PAGE_SIZE; |
|
3342 #endif |
|
3343 |
|
3344 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3345 if (!hw->tbi_compatibility_on && |
|
3346 ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
|
3347 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3348 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3349 |
|
3350 pr_info("%s changing MTU from %d to %d\n", |
|
3351 netdev->name, netdev->mtu, new_mtu); |
|
3352 netdev->mtu = new_mtu; |
|
3353 |
|
3354 if (netif_running(netdev)) |
|
3355 e1000_up(adapter); |
|
3356 else |
|
3357 e1000_reset(adapter); |
|
3358 |
|
3359 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
3360 |
|
3361 return 0; |
|
3362 } |
|
3363 |
|
3364 /** |
|
3365 * e1000_update_stats - Update the board statistics counters |
|
3366 * @adapter: board private structure |
|
3367 **/ |
|
3368 |
|
3369 void e1000_update_stats(struct e1000_adapter *adapter) |
|
3370 { |
|
3371 struct net_device *netdev = adapter->netdev; |
|
3372 struct e1000_hw *hw = &adapter->hw; |
|
3373 struct pci_dev *pdev = adapter->pdev; |
|
3374 unsigned long flags = 0; |
|
3375 u16 phy_tmp; |
|
3376 |
|
3377 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3378 |
|
3379 /* |
|
3380 * Prevent stats update while adapter is being reset, or if the pci |
|
3381 * connection is down. |
|
3382 */ |
|
3383 if (adapter->link_speed == 0) |
|
3384 return; |
|
3385 if (pci_channel_offline(pdev)) |
|
3386 return; |
|
3387 |
|
3388 if (!adapter->ecdev) |
|
3389 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3390 |
|
3391 /* these counters are modified from e1000_tbi_adjust_stats, |
|
3392 * called from the interrupt context, so they must only |
|
3393 * be written while holding adapter->stats_lock |
|
3394 */ |
|
3395 |
|
3396 adapter->stats.crcerrs += er32(CRCERRS); |
|
3397 adapter->stats.gprc += er32(GPRC); |
|
3398 adapter->stats.gorcl += er32(GORCL); |
|
3399 adapter->stats.gorch += er32(GORCH); |
|
3400 adapter->stats.bprc += er32(BPRC); |
|
3401 adapter->stats.mprc += er32(MPRC); |
|
3402 adapter->stats.roc += er32(ROC); |
|
3403 |
|
3404 adapter->stats.prc64 += er32(PRC64); |
|
3405 adapter->stats.prc127 += er32(PRC127); |
|
3406 adapter->stats.prc255 += er32(PRC255); |
|
3407 adapter->stats.prc511 += er32(PRC511); |
|
3408 adapter->stats.prc1023 += er32(PRC1023); |
|
3409 adapter->stats.prc1522 += er32(PRC1522); |
|
3410 |
|
3411 adapter->stats.symerrs += er32(SYMERRS); |
|
3412 adapter->stats.mpc += er32(MPC); |
|
3413 adapter->stats.scc += er32(SCC); |
|
3414 adapter->stats.ecol += er32(ECOL); |
|
3415 adapter->stats.mcc += er32(MCC); |
|
3416 adapter->stats.latecol += er32(LATECOL); |
|
3417 adapter->stats.dc += er32(DC); |
|
3418 adapter->stats.sec += er32(SEC); |
|
3419 adapter->stats.rlec += er32(RLEC); |
|
3420 adapter->stats.xonrxc += er32(XONRXC); |
|
3421 adapter->stats.xontxc += er32(XONTXC); |
|
3422 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
3423 adapter->stats.xofftxc += er32(XOFFTXC); |
|
3424 adapter->stats.fcruc += er32(FCRUC); |
|
3425 adapter->stats.gptc += er32(GPTC); |
|
3426 adapter->stats.gotcl += er32(GOTCL); |
|
3427 adapter->stats.gotch += er32(GOTCH); |
|
3428 adapter->stats.rnbc += er32(RNBC); |
|
3429 adapter->stats.ruc += er32(RUC); |
|
3430 adapter->stats.rfc += er32(RFC); |
|
3431 adapter->stats.rjc += er32(RJC); |
|
3432 adapter->stats.torl += er32(TORL); |
|
3433 adapter->stats.torh += er32(TORH); |
|
3434 adapter->stats.totl += er32(TOTL); |
|
3435 adapter->stats.toth += er32(TOTH); |
|
3436 adapter->stats.tpr += er32(TPR); |
|
3437 |
|
3438 adapter->stats.ptc64 += er32(PTC64); |
|
3439 adapter->stats.ptc127 += er32(PTC127); |
|
3440 adapter->stats.ptc255 += er32(PTC255); |
|
3441 adapter->stats.ptc511 += er32(PTC511); |
|
3442 adapter->stats.ptc1023 += er32(PTC1023); |
|
3443 adapter->stats.ptc1522 += er32(PTC1522); |
|
3444 |
|
3445 adapter->stats.mptc += er32(MPTC); |
|
3446 adapter->stats.bptc += er32(BPTC); |
|
3447 |
|
3448 /* used for adaptive IFS */ |
|
3449 |
|
3450 hw->tx_packet_delta = er32(TPT); |
|
3451 adapter->stats.tpt += hw->tx_packet_delta; |
|
3452 hw->collision_delta = er32(COLC); |
|
3453 adapter->stats.colc += hw->collision_delta; |
|
3454 |
|
3455 if (hw->mac_type >= e1000_82543) { |
|
3456 adapter->stats.algnerrc += er32(ALGNERRC); |
|
3457 adapter->stats.rxerrc += er32(RXERRC); |
|
3458 adapter->stats.tncrs += er32(TNCRS); |
|
3459 adapter->stats.cexterr += er32(CEXTERR); |
|
3460 adapter->stats.tsctc += er32(TSCTC); |
|
3461 adapter->stats.tsctfc += er32(TSCTFC); |
|
3462 } |
|
3463 |
|
3464 /* Fill out the OS statistics structure */ |
|
3465 netdev->stats.multicast = adapter->stats.mprc; |
|
3466 netdev->stats.collisions = adapter->stats.colc; |
|
3467 |
|
3468 /* Rx Errors */ |
|
3469 |
|
3470 /* RLEC on some newer hardware can be incorrect so build |
|
3471 * our own version based on RUC and ROC */ |
|
3472 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
3473 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3474 adapter->stats.ruc + adapter->stats.roc + |
|
3475 adapter->stats.cexterr; |
|
3476 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3477 netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
|
3478 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3479 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3480 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
3481 |
|
3482 /* Tx Errors */ |
|
3483 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3484 netdev->stats.tx_errors = adapter->stats.txerrc; |
|
3485 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
3486 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
3487 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3488 if (hw->bad_tx_carr_stats_fd && |
|
3489 adapter->link_duplex == FULL_DUPLEX) { |
|
3490 netdev->stats.tx_carrier_errors = 0; |
|
3491 adapter->stats.tncrs = 0; |
|
3492 } |
|
3493 |
|
3494 /* Tx Dropped needs to be maintained elsewhere */ |
|
3495 |
|
3496 /* Phy Stats */ |
|
3497 if (hw->media_type == e1000_media_type_copper) { |
|
3498 if ((adapter->link_speed == SPEED_1000) && |
|
3499 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3500 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3501 adapter->phy_stats.idle_errors += phy_tmp; |
|
3502 } |
|
3503 |
|
3504 if ((hw->mac_type <= e1000_82546) && |
|
3505 (hw->phy_type == e1000_phy_m88) && |
|
3506 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3507 adapter->phy_stats.receive_errors += phy_tmp; |
|
3508 } |
|
3509 |
|
3510 /* Management Stats */ |
|
3511 if (hw->has_smbus) { |
|
3512 adapter->stats.mgptc += er32(MGTPTC); |
|
3513 adapter->stats.mgprc += er32(MGTPRC); |
|
3514 adapter->stats.mgpdc += er32(MGTPDC); |
|
3515 } |
|
3516 |
|
3517 if (!adapter->ecdev) |
|
3518 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3519 } |
|
3520 |
|
3521 void ec_poll(struct net_device *netdev) |
|
3522 { |
|
3523 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3524 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
3525 e1000_watchdog((unsigned long) adapter); |
|
3526 adapter->ec_watchdog_jiffies = jiffies; |
|
3527 } |
|
3528 |
|
3529 e1000_intr(0, netdev); |
|
3530 } |
|
3531 |
|
3532 /** |
|
3533 * e1000_intr - Interrupt Handler |
|
3534 * @irq: interrupt number |
|
3535 * @data: pointer to a network interface device structure |
|
3536 **/ |
|
3537 |
|
3538 static irqreturn_t e1000_intr(int irq, void *data) |
|
3539 { |
|
3540 struct net_device *netdev = data; |
|
3541 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3542 struct e1000_hw *hw = &adapter->hw; |
|
3543 u32 icr = er32(ICR); |
|
3544 |
|
3545 if (unlikely((!icr) || test_bit(__E1000_DOWN, &adapter->flags))) |
|
3546 return IRQ_NONE; /* Not our interrupt */ |
|
3547 |
|
3548 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3549 hw->get_link_status = 1; |
|
3550 /* guard against interrupt when we're going down */ |
|
3551 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3552 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3553 } |
|
3554 |
|
3555 if (adapter->ecdev) { |
|
3556 int i, ec_work_done = 0; |
|
3557 for (i = 0; i < E1000_MAX_INTR; i++) { |
|
3558 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring, |
|
3559 &ec_work_done, 100) && |
|
3560 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) { |
|
3561 break; |
|
3562 } |
|
3563 } |
|
3564 } else { |
|
3565 /* disable interrupts, without the synchronize_irq bit */ |
|
3566 ew32(IMC, ~0); |
|
3567 E1000_WRITE_FLUSH(); |
|
3568 |
|
3569 if (likely(napi_schedule_prep(&adapter->napi))) { |
|
3570 adapter->total_tx_bytes = 0; |
|
3571 adapter->total_tx_packets = 0; |
|
3572 adapter->total_rx_bytes = 0; |
|
3573 adapter->total_rx_packets = 0; |
|
3574 __napi_schedule(&adapter->napi); |
|
3575 } else { |
|
3576 /* this really should not happen! if it does it is basically a |
|
3577 * bug, but not a hard error, so enable ints and continue */ |
|
3578 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3579 e1000_irq_enable(adapter); |
|
3580 } |
|
3581 } |
|
3582 |
|
3583 return IRQ_HANDLED; |
|
3584 } |
|
3585 |
|
3586 /** |
|
3587 * e1000_clean - NAPI Rx polling callback |
|
3588 * @adapter: board private structure |
|
3589 * EtherCAT: never called |
|
3590 **/ |
|
3591 static int e1000_clean(struct napi_struct *napi, int budget) |
|
3592 { |
|
3593 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
3594 int tx_clean_complete = 0, work_done = 0; |
|
3595 |
|
3596 tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
|
3597 |
|
3598 adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
|
3599 |
|
3600 if (!tx_clean_complete) |
|
3601 work_done = budget; |
|
3602 |
|
3603 /* If budget not fully consumed, exit the polling mode */ |
|
3604 if (work_done < budget) { |
|
3605 if (likely(adapter->itr_setting & 3)) |
|
3606 e1000_set_itr(adapter); |
|
3607 napi_complete(napi); |
|
3608 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3609 e1000_irq_enable(adapter); |
|
3610 } |
|
3611 |
|
3612 return work_done; |
|
3613 } |
|
3614 |
|
3615 /** |
|
3616 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
3617 * @adapter: board private structure |
|
3618 **/ |
|
3619 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
3620 struct e1000_tx_ring *tx_ring) |
|
3621 { |
|
3622 struct e1000_hw *hw = &adapter->hw; |
|
3623 struct net_device *netdev = adapter->netdev; |
|
3624 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
3625 struct e1000_buffer *buffer_info; |
|
3626 unsigned int i, eop; |
|
3627 unsigned int count = 0; |
|
3628 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
3629 |
|
3630 i = tx_ring->next_to_clean; |
|
3631 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3632 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3633 |
|
3634 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
3635 (count < tx_ring->count)) { |
|
3636 bool cleaned = false; |
|
3637 rmb(); /* read buffer_info after eop_desc */ |
|
3638 for ( ; !cleaned; count++) { |
|
3639 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3640 buffer_info = &tx_ring->buffer_info[i]; |
|
3641 cleaned = (i == eop); |
|
3642 |
|
3643 if (cleaned) { |
|
3644 struct sk_buff *skb = buffer_info->skb; |
|
3645 unsigned int segs, bytecount; |
|
3646 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
3647 /* multiply data chunks by size of headers */ |
|
3648 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
3649 skb->len; |
|
3650 total_tx_packets += segs; |
|
3651 total_tx_bytes += bytecount; |
|
3652 } |
|
3653 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
3654 tx_desc->upper.data = 0; |
|
3655 |
|
3656 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3657 } |
|
3658 |
|
3659 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3660 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3661 } |
|
3662 |
|
3663 tx_ring->next_to_clean = i; |
|
3664 |
|
3665 #define TX_WAKE_THRESHOLD 32 |
|
3666 if (!adapter->ecdev && unlikely(count && netif_carrier_ok(netdev) && |
|
3667 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
3668 /* Make sure that anybody stopping the queue after this |
|
3669 * sees the new next_to_clean. |
|
3670 */ |
|
3671 smp_mb(); |
|
3672 |
|
3673 if (netif_queue_stopped(netdev) && |
|
3674 !(test_bit(__E1000_DOWN, &adapter->flags))) { |
|
3675 netif_wake_queue(netdev); |
|
3676 ++adapter->restart_queue; |
|
3677 } |
|
3678 } |
|
3679 |
|
3680 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
3681 /* Detect a transmit hang in hardware, this serializes the |
|
3682 * check with the clearing of time_stamp and movement of i */ |
|
3683 adapter->detect_tx_hung = false; |
|
3684 if (tx_ring->buffer_info[eop].time_stamp && |
|
3685 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + |
|
3686 (adapter->tx_timeout_factor * HZ)) && |
|
3687 !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
|
3688 |
|
3689 /* detected Tx unit hang */ |
|
3690 e_err(drv, "Detected Tx Unit Hang\n" |
|
3691 " Tx Queue <%lu>\n" |
|
3692 " TDH <%x>\n" |
|
3693 " TDT <%x>\n" |
|
3694 " next_to_use <%x>\n" |
|
3695 " next_to_clean <%x>\n" |
|
3696 "buffer_info[next_to_clean]\n" |
|
3697 " time_stamp <%lx>\n" |
|
3698 " next_to_watch <%x>\n" |
|
3699 " jiffies <%lx>\n" |
|
3700 " next_to_watch.status <%x>\n", |
|
3701 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
3702 sizeof(struct e1000_tx_ring)), |
|
3703 readl(hw->hw_addr + tx_ring->tdh), |
|
3704 readl(hw->hw_addr + tx_ring->tdt), |
|
3705 tx_ring->next_to_use, |
|
3706 tx_ring->next_to_clean, |
|
3707 tx_ring->buffer_info[eop].time_stamp, |
|
3708 eop, |
|
3709 jiffies, |
|
3710 eop_desc->upper.fields.status); |
|
3711 netif_stop_queue(netdev); |
|
3712 } |
|
3713 } |
|
3714 adapter->total_tx_bytes += total_tx_bytes; |
|
3715 adapter->total_tx_packets += total_tx_packets; |
|
3716 netdev->stats.tx_bytes += total_tx_bytes; |
|
3717 netdev->stats.tx_packets += total_tx_packets; |
|
3718 return count < tx_ring->count; |
|
3719 } |
|
3720 |
|
3721 /** |
|
3722 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
3723 * @adapter: board private structure |
|
3724 * @status_err: receive descriptor status and error fields |
|
3725 * @csum: receive descriptor csum field |
|
3726 * @sk_buff: socket buffer with received data |
|
3727 **/ |
|
3728 |
|
3729 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
3730 u32 csum, struct sk_buff *skb) |
|
3731 { |
|
3732 struct e1000_hw *hw = &adapter->hw; |
|
3733 u16 status = (u16)status_err; |
|
3734 u8 errors = (u8)(status_err >> 24); |
|
3735 |
|
3736 skb_checksum_none_assert(skb); |
|
3737 |
|
3738 /* 82543 or newer only */ |
|
3739 if (unlikely(hw->mac_type < e1000_82543)) return; |
|
3740 /* Ignore Checksum bit is set */ |
|
3741 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
3742 /* TCP/UDP checksum error bit is set */ |
|
3743 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
3744 /* let the stack verify checksum errors */ |
|
3745 adapter->hw_csum_err++; |
|
3746 return; |
|
3747 } |
|
3748 /* TCP/UDP Checksum has not been calculated */ |
|
3749 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
3750 return; |
|
3751 |
|
3752 /* It must be a TCP or UDP packet with a valid checksum */ |
|
3753 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
3754 /* TCP checksum is good */ |
|
3755 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
3756 } |
|
3757 adapter->hw_csum_good++; |
|
3758 } |
|
3759 |
|
3760 /** |
|
3761 * e1000_consume_page - helper function |
|
3762 **/ |
|
3763 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
3764 u16 length) |
|
3765 { |
|
3766 bi->page = NULL; |
|
3767 skb->len += length; |
|
3768 skb->data_len += length; |
|
3769 skb->truesize += length; |
|
3770 } |
|
3771 |
|
3772 /** |
|
3773 * e1000_receive_skb - helper function to handle rx indications |
|
3774 * @adapter: board private structure |
|
3775 * @status: descriptor status field as written by hardware |
|
3776 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
3777 * @skb: pointer to sk_buff to be indicated to stack |
|
3778 */ |
|
3779 static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, |
|
3780 __le16 vlan, struct sk_buff *skb) |
|
3781 { |
|
3782 skb->protocol = eth_type_trans(skb, adapter->netdev); |
|
3783 |
|
3784 if ((unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP)))) |
|
3785 vlan_gro_receive(&adapter->napi, adapter->vlgrp, |
|
3786 le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK, |
|
3787 skb); |
|
3788 else |
|
3789 napi_gro_receive(&adapter->napi, skb); |
|
3790 } |
|
3791 |
|
3792 /** |
|
3793 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
3794 * @adapter: board private structure |
|
3795 * @rx_ring: ring to clean |
|
3796 * @work_done: amount of napi work completed this call |
|
3797 * @work_to_do: max amount of work allowed for this call to do |
|
3798 * |
|
3799 * the return value indicates whether actual cleaning was done, there |
|
3800 * is no guarantee that everything was cleaned |
|
3801 */ |
|
3802 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
|
3803 struct e1000_rx_ring *rx_ring, |
|
3804 int *work_done, int work_to_do) |
|
3805 { |
|
3806 struct e1000_hw *hw = &adapter->hw; |
|
3807 struct net_device *netdev = adapter->netdev; |
|
3808 struct pci_dev *pdev = adapter->pdev; |
|
3809 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3810 struct e1000_buffer *buffer_info, *next_buffer; |
|
3811 unsigned long irq_flags; |
|
3812 u32 length; |
|
3813 unsigned int i; |
|
3814 int cleaned_count = 0; |
|
3815 bool cleaned = false; |
|
3816 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3817 |
|
3818 i = rx_ring->next_to_clean; |
|
3819 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3820 buffer_info = &rx_ring->buffer_info[i]; |
|
3821 |
|
3822 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3823 struct sk_buff *skb; |
|
3824 u8 status; |
|
3825 |
|
3826 if (*work_done >= work_to_do) |
|
3827 break; |
|
3828 (*work_done)++; |
|
3829 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
3830 |
|
3831 status = rx_desc->status; |
|
3832 skb = buffer_info->skb; |
|
3833 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
3834 |
|
3835 if (++i == rx_ring->count) i = 0; |
|
3836 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3837 prefetch(next_rxd); |
|
3838 |
|
3839 next_buffer = &rx_ring->buffer_info[i]; |
|
3840 |
|
3841 cleaned = true; |
|
3842 cleaned_count++; |
|
3843 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
3844 buffer_info->length, DMA_FROM_DEVICE); |
|
3845 buffer_info->dma = 0; |
|
3846 |
|
3847 length = le16_to_cpu(rx_desc->length); |
|
3848 |
|
3849 /* errors is only valid for DD + EOP descriptors */ |
|
3850 if (!adapter->ecdev && |
|
3851 unlikely((status & E1000_RXD_STAT_EOP) && |
|
3852 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { |
|
3853 u8 last_byte = *(skb->data + length - 1); |
|
3854 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
3855 last_byte)) { |
|
3856 spin_lock_irqsave(&adapter->stats_lock, |
|
3857 irq_flags); |
|
3858 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
3859 length, skb->data); |
|
3860 spin_unlock_irqrestore(&adapter->stats_lock, |
|
3861 irq_flags); |
|
3862 length--; |
|
3863 } else { |
|
3864 /* recycle both page and skb */ |
|
3865 buffer_info->skb = skb; |
|
3866 /* an error means any chain goes out the window |
|
3867 * too */ |
|
3868 if (rx_ring->rx_skb_top) |
|
3869 dev_kfree_skb(rx_ring->rx_skb_top); |
|
3870 rx_ring->rx_skb_top = NULL; |
|
3871 goto next_desc; |
|
3872 } |
|
3873 } |
|
3874 |
|
3875 #define rxtop rx_ring->rx_skb_top |
|
3876 if (!(status & E1000_RXD_STAT_EOP)) { |
|
3877 /* this descriptor is only the beginning (or middle) */ |
|
3878 if (!rxtop) { |
|
3879 /* this is the beginning of a chain */ |
|
3880 rxtop = skb; |
|
3881 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
3882 0, length); |
|
3883 } else { |
|
3884 /* this is the middle of a chain */ |
|
3885 skb_fill_page_desc(rxtop, |
|
3886 skb_shinfo(rxtop)->nr_frags, |
|
3887 buffer_info->page, 0, length); |
|
3888 /* re-use the skb, only consumed the page */ |
|
3889 buffer_info->skb = skb; |
|
3890 } |
|
3891 e1000_consume_page(buffer_info, rxtop, length); |
|
3892 goto next_desc; |
|
3893 } else { |
|
3894 if (rxtop) { |
|
3895 /* end of the chain */ |
|
3896 skb_fill_page_desc(rxtop, |
|
3897 skb_shinfo(rxtop)->nr_frags, |
|
3898 buffer_info->page, 0, length); |
|
3899 /* re-use the current skb, we only consumed the |
|
3900 * page */ |
|
3901 buffer_info->skb = skb; |
|
3902 skb = rxtop; |
|
3903 rxtop = NULL; |
|
3904 e1000_consume_page(buffer_info, skb, length); |
|
3905 } else { |
|
3906 /* no chain, got EOP, this buf is the packet |
|
3907 * copybreak to save the put_page/alloc_page */ |
|
3908 if (length <= copybreak && |
|
3909 skb_tailroom(skb) >= length) { |
|
3910 u8 *vaddr; |
|
3911 vaddr = kmap_atomic(buffer_info->page, |
|
3912 KM_SKB_DATA_SOFTIRQ); |
|
3913 memcpy(skb_tail_pointer(skb), vaddr, length); |
|
3914 kunmap_atomic(vaddr, |
|
3915 KM_SKB_DATA_SOFTIRQ); |
|
3916 /* re-use the page, so don't erase |
|
3917 * buffer_info->page */ |
|
3918 skb_put(skb, length); |
|
3919 } else { |
|
3920 skb_fill_page_desc(skb, 0, |
|
3921 buffer_info->page, 0, |
|
3922 length); |
|
3923 e1000_consume_page(buffer_info, skb, |
|
3924 length); |
|
3925 } |
|
3926 } |
|
3927 } |
|
3928 |
|
3929 /* Receive Checksum Offload XXX recompute due to CRC strip? */ |
|
3930 e1000_rx_checksum(adapter, |
|
3931 (u32)(status) | |
|
3932 ((u32)(rx_desc->errors) << 24), |
|
3933 le16_to_cpu(rx_desc->csum), skb); |
|
3934 |
|
3935 pskb_trim(skb, skb->len - 4); |
|
3936 |
|
3937 /* probably a little skewed due to removing CRC */ |
|
3938 total_rx_bytes += skb->len; |
|
3939 total_rx_packets++; |
|
3940 |
|
3941 /* eth type trans needs skb->data to point to something */ |
|
3942 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
3943 e_err(drv, "pskb_may_pull failed.\n"); |
|
3944 if (!adapter->ecdev) { |
|
3945 dev_kfree_skb(skb); |
|
3946 } |
|
3947 goto next_desc; |
|
3948 } |
|
3949 |
|
3950 if (adapter->ecdev) { |
|
3951 ecdev_receive(adapter->ecdev, skb->data, length); |
|
3952 |
|
3953 // No need to detect link status as |
|
3954 // long as frames are received: Reset watchdog. |
|
3955 adapter->ec_watchdog_jiffies = jiffies; |
|
3956 } else { |
|
3957 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
3958 } |
|
3959 |
|
3960 next_desc: |
|
3961 rx_desc->status = 0; |
|
3962 |
|
3963 /* return some buffers to hardware, one at a time is too slow */ |
|
3964 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
3965 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3966 cleaned_count = 0; |
|
3967 } |
|
3968 |
|
3969 /* use prefetched values */ |
|
3970 rx_desc = next_rxd; |
|
3971 buffer_info = next_buffer; |
|
3972 } |
|
3973 rx_ring->next_to_clean = i; |
|
3974 |
|
3975 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
3976 if (cleaned_count) |
|
3977 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3978 |
|
3979 adapter->total_rx_packets += total_rx_packets; |
|
3980 adapter->total_rx_bytes += total_rx_bytes; |
|
3981 netdev->stats.rx_bytes += total_rx_bytes; |
|
3982 netdev->stats.rx_packets += total_rx_packets; |
|
3983 return cleaned; |
|
3984 } |
|
3985 |
|
3986 /* |
|
3987 * this should improve performance for small packets with large amounts |
|
3988 * of reassembly being done in the stack |
|
3989 */ |
|
3990 static void e1000_check_copybreak(struct net_device *netdev, |
|
3991 struct e1000_buffer *buffer_info, |
|
3992 u32 length, struct sk_buff **skb) |
|
3993 { |
|
3994 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3995 struct sk_buff *new_skb; |
|
3996 |
|
3997 if (adapter->ecdev || length > copybreak) |
|
3998 return; |
|
3999 |
|
4000 new_skb = netdev_alloc_skb_ip_align(netdev, length); |
|
4001 if (!new_skb) |
|
4002 return; |
|
4003 |
|
4004 skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN, |
|
4005 (*skb)->data - NET_IP_ALIGN, |
|
4006 length + NET_IP_ALIGN); |
|
4007 /* save the skb in buffer_info as good */ |
|
4008 buffer_info->skb = *skb; |
|
4009 *skb = new_skb; |
|
4010 } |
|
4011 |
|
4012 /** |
|
4013 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
4014 * @adapter: board private structure |
|
4015 * @rx_ring: ring to clean |
|
4016 * @work_done: amount of napi work completed this call |
|
4017 * @work_to_do: max amount of work allowed for this call to do |
|
4018 */ |
|
4019 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
4020 struct e1000_rx_ring *rx_ring, |
|
4021 int *work_done, int work_to_do) |
|
4022 { |
|
4023 struct e1000_hw *hw = &adapter->hw; |
|
4024 struct net_device *netdev = adapter->netdev; |
|
4025 struct pci_dev *pdev = adapter->pdev; |
|
4026 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
4027 struct e1000_buffer *buffer_info, *next_buffer; |
|
4028 unsigned long flags; |
|
4029 u32 length; |
|
4030 unsigned int i; |
|
4031 int cleaned_count = 0; |
|
4032 bool cleaned = false; |
|
4033 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
4034 |
|
4035 i = rx_ring->next_to_clean; |
|
4036 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4037 buffer_info = &rx_ring->buffer_info[i]; |
|
4038 |
|
4039 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
4040 struct sk_buff *skb; |
|
4041 u8 status; |
|
4042 |
|
4043 if (*work_done >= work_to_do) |
|
4044 break; |
|
4045 (*work_done)++; |
|
4046 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
4047 |
|
4048 status = rx_desc->status; |
|
4049 skb = buffer_info->skb; |
|
4050 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
4051 |
|
4052 prefetch(skb->data - NET_IP_ALIGN); |
|
4053 |
|
4054 if (++i == rx_ring->count) i = 0; |
|
4055 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
4056 prefetch(next_rxd); |
|
4057 |
|
4058 next_buffer = &rx_ring->buffer_info[i]; |
|
4059 |
|
4060 cleaned = true; |
|
4061 cleaned_count++; |
|
4062 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
4063 buffer_info->length, DMA_FROM_DEVICE); |
|
4064 buffer_info->dma = 0; |
|
4065 |
|
4066 length = le16_to_cpu(rx_desc->length); |
|
4067 /* !EOP means multiple descriptors were used to store a single |
|
4068 * packet, if thats the case we need to toss it. In fact, we |
|
4069 * to toss every packet with the EOP bit clear and the next |
|
4070 * frame that _does_ have the EOP bit set, as it is by |
|
4071 * definition only a frame fragment |
|
4072 */ |
|
4073 if (unlikely(!(status & E1000_RXD_STAT_EOP))) |
|
4074 adapter->discarding = true; |
|
4075 |
|
4076 if (adapter->discarding) { |
|
4077 /* All receives must fit into a single buffer */ |
|
4078 e_dbg("Receive packet consumed multiple buffers\n"); |
|
4079 /* recycle */ |
|
4080 buffer_info->skb = skb; |
|
4081 if (status & E1000_RXD_STAT_EOP) |
|
4082 adapter->discarding = false; |
|
4083 goto next_desc; |
|
4084 } |
|
4085 |
|
4086 if (!adapter->ecdev && |
|
4087 unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
4088 u8 last_byte = *(skb->data + length - 1); |
|
4089 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
4090 last_byte)) { |
|
4091 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4092 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
4093 length, skb->data); |
|
4094 spin_unlock_irqrestore(&adapter->stats_lock, |
|
4095 flags); |
|
4096 length--; |
|
4097 } else { |
|
4098 /* recycle */ |
|
4099 buffer_info->skb = skb; |
|
4100 goto next_desc; |
|
4101 } |
|
4102 } |
|
4103 |
|
4104 /* adjust length to remove Ethernet CRC, this must be |
|
4105 * done after the TBI_ACCEPT workaround above */ |
|
4106 length -= 4; |
|
4107 |
|
4108 /* probably a little skewed due to removing CRC */ |
|
4109 total_rx_bytes += length; |
|
4110 total_rx_packets++; |
|
4111 |
|
4112 e1000_check_copybreak(netdev, buffer_info, length, &skb); |
|
4113 |
|
4114 skb_put(skb, length); |
|
4115 |
|
4116 /* Receive Checksum Offload */ |
|
4117 e1000_rx_checksum(adapter, |
|
4118 (u32)(status) | |
|
4119 ((u32)(rx_desc->errors) << 24), |
|
4120 le16_to_cpu(rx_desc->csum), skb); |
|
4121 |
|
4122 if (adapter->ecdev) { |
|
4123 ecdev_receive(adapter->ecdev, skb->data, length); |
|
4124 |
|
4125 // No need to detect link status as |
|
4126 // long as frames are received: Reset watchdog. |
|
4127 adapter->ec_watchdog_jiffies = jiffies; |
|
4128 } else { |
|
4129 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
4130 } |
|
4131 |
|
4132 next_desc: |
|
4133 rx_desc->status = 0; |
|
4134 |
|
4135 /* return some buffers to hardware, one at a time is too slow */ |
|
4136 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4137 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4138 cleaned_count = 0; |
|
4139 } |
|
4140 |
|
4141 /* use prefetched values */ |
|
4142 rx_desc = next_rxd; |
|
4143 buffer_info = next_buffer; |
|
4144 } |
|
4145 rx_ring->next_to_clean = i; |
|
4146 |
|
4147 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4148 if (cleaned_count) |
|
4149 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4150 |
|
4151 adapter->total_rx_packets += total_rx_packets; |
|
4152 adapter->total_rx_bytes += total_rx_bytes; |
|
4153 netdev->stats.rx_bytes += total_rx_bytes; |
|
4154 netdev->stats.rx_packets += total_rx_packets; |
|
4155 return cleaned; |
|
4156 } |
|
4157 |
|
4158 /** |
|
4159 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
4160 * @adapter: address of board private structure |
|
4161 * @rx_ring: pointer to receive ring structure |
|
4162 * @cleaned_count: number of buffers to allocate this pass |
|
4163 **/ |
|
4164 |
|
4165 static void |
|
4166 e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
|
4167 struct e1000_rx_ring *rx_ring, int cleaned_count) |
|
4168 { |
|
4169 struct net_device *netdev = adapter->netdev; |
|
4170 struct pci_dev *pdev = adapter->pdev; |
|
4171 struct e1000_rx_desc *rx_desc; |
|
4172 struct e1000_buffer *buffer_info; |
|
4173 struct sk_buff *skb; |
|
4174 unsigned int i; |
|
4175 unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
|
4176 |
|
4177 i = rx_ring->next_to_use; |
|
4178 buffer_info = &rx_ring->buffer_info[i]; |
|
4179 |
|
4180 while (cleaned_count--) { |
|
4181 skb = buffer_info->skb; |
|
4182 if (skb) { |
|
4183 skb_trim(skb, 0); |
|
4184 goto check_page; |
|
4185 } |
|
4186 |
|
4187 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4188 if (unlikely(!skb)) { |
|
4189 /* Better luck next round */ |
|
4190 adapter->alloc_rx_buff_failed++; |
|
4191 break; |
|
4192 } |
|
4193 |
|
4194 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4195 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4196 struct sk_buff *oldskb = skb; |
|
4197 e_err(rx_err, "skb align check failed: %u bytes at " |
|
4198 "%p\n", bufsz, skb->data); |
|
4199 /* Try again, without freeing the previous */ |
|
4200 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4201 /* Failed allocation, critical failure */ |
|
4202 if (!skb) { |
|
4203 dev_kfree_skb(oldskb); |
|
4204 adapter->alloc_rx_buff_failed++; |
|
4205 break; |
|
4206 } |
|
4207 |
|
4208 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4209 /* give up */ |
|
4210 dev_kfree_skb(skb); |
|
4211 dev_kfree_skb(oldskb); |
|
4212 break; /* while (cleaned_count--) */ |
|
4213 } |
|
4214 |
|
4215 /* Use new allocation */ |
|
4216 dev_kfree_skb(oldskb); |
|
4217 } |
|
4218 buffer_info->skb = skb; |
|
4219 buffer_info->length = adapter->rx_buffer_len; |
|
4220 check_page: |
|
4221 /* allocate a new page if necessary */ |
|
4222 if (!buffer_info->page) { |
|
4223 buffer_info->page = alloc_page(GFP_ATOMIC); |
|
4224 if (unlikely(!buffer_info->page)) { |
|
4225 adapter->alloc_rx_buff_failed++; |
|
4226 break; |
|
4227 } |
|
4228 } |
|
4229 |
|
4230 if (!buffer_info->dma) { |
|
4231 buffer_info->dma = dma_map_page(&pdev->dev, |
|
4232 buffer_info->page, 0, |
|
4233 buffer_info->length, |
|
4234 DMA_FROM_DEVICE); |
|
4235 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
4236 put_page(buffer_info->page); |
|
4237 dev_kfree_skb(skb); |
|
4238 buffer_info->page = NULL; |
|
4239 buffer_info->skb = NULL; |
|
4240 buffer_info->dma = 0; |
|
4241 adapter->alloc_rx_buff_failed++; |
|
4242 break; /* while !buffer_info->skb */ |
|
4243 } |
|
4244 } |
|
4245 |
|
4246 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4247 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4248 |
|
4249 if (unlikely(++i == rx_ring->count)) |
|
4250 i = 0; |
|
4251 buffer_info = &rx_ring->buffer_info[i]; |
|
4252 } |
|
4253 |
|
4254 if (likely(rx_ring->next_to_use != i)) { |
|
4255 rx_ring->next_to_use = i; |
|
4256 if (unlikely(i-- == 0)) |
|
4257 i = (rx_ring->count - 1); |
|
4258 |
|
4259 /* Force memory writes to complete before letting h/w |
|
4260 * know there are new descriptors to fetch. (Only |
|
4261 * applicable for weak-ordered memory model archs, |
|
4262 * such as IA-64). */ |
|
4263 wmb(); |
|
4264 writel(i, adapter->hw.hw_addr + rx_ring->rdt); |
|
4265 } |
|
4266 } |
|
4267 |
|
4268 /** |
|
4269 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4270 * @adapter: address of board private structure |
|
4271 **/ |
|
4272 |
|
4273 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4274 struct e1000_rx_ring *rx_ring, |
|
4275 int cleaned_count) |
|
4276 { |
|
4277 struct e1000_hw *hw = &adapter->hw; |
|
4278 struct net_device *netdev = adapter->netdev; |
|
4279 struct pci_dev *pdev = adapter->pdev; |
|
4280 struct e1000_rx_desc *rx_desc; |
|
4281 struct e1000_buffer *buffer_info; |
|
4282 struct sk_buff *skb; |
|
4283 unsigned int i; |
|
4284 unsigned int bufsz = adapter->rx_buffer_len; |
|
4285 |
|
4286 i = rx_ring->next_to_use; |
|
4287 buffer_info = &rx_ring->buffer_info[i]; |
|
4288 |
|
4289 while (cleaned_count--) { |
|
4290 skb = buffer_info->skb; |
|
4291 if (skb) { |
|
4292 skb_trim(skb, 0); |
|
4293 goto map_skb; |
|
4294 } |
|
4295 |
|
4296 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4297 if (unlikely(!skb)) { |
|
4298 /* Better luck next round */ |
|
4299 adapter->alloc_rx_buff_failed++; |
|
4300 break; |
|
4301 } |
|
4302 |
|
4303 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4304 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4305 struct sk_buff *oldskb = skb; |
|
4306 e_err(rx_err, "skb align check failed: %u bytes at " |
|
4307 "%p\n", bufsz, skb->data); |
|
4308 /* Try again, without freeing the previous */ |
|
4309 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4310 /* Failed allocation, critical failure */ |
|
4311 if (!skb) { |
|
4312 dev_kfree_skb(oldskb); |
|
4313 adapter->alloc_rx_buff_failed++; |
|
4314 break; |
|
4315 } |
|
4316 |
|
4317 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4318 /* give up */ |
|
4319 dev_kfree_skb(skb); |
|
4320 dev_kfree_skb(oldskb); |
|
4321 adapter->alloc_rx_buff_failed++; |
|
4322 break; /* while !buffer_info->skb */ |
|
4323 } |
|
4324 |
|
4325 /* Use new allocation */ |
|
4326 dev_kfree_skb(oldskb); |
|
4327 } |
|
4328 buffer_info->skb = skb; |
|
4329 buffer_info->length = adapter->rx_buffer_len; |
|
4330 map_skb: |
|
4331 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4332 skb->data, |
|
4333 buffer_info->length, |
|
4334 DMA_FROM_DEVICE); |
|
4335 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
4336 dev_kfree_skb(skb); |
|
4337 buffer_info->skb = NULL; |
|
4338 buffer_info->dma = 0; |
|
4339 adapter->alloc_rx_buff_failed++; |
|
4340 break; /* while !buffer_info->skb */ |
|
4341 } |
|
4342 |
|
4343 /* |
|
4344 * XXX if it was allocated cleanly it will never map to a |
|
4345 * boundary crossing |
|
4346 */ |
|
4347 |
|
4348 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4349 if (!e1000_check_64k_bound(adapter, |
|
4350 (void *)(unsigned long)buffer_info->dma, |
|
4351 adapter->rx_buffer_len)) { |
|
4352 e_err(rx_err, "dma align check failed: %u bytes at " |
|
4353 "%p\n", adapter->rx_buffer_len, |
|
4354 (void *)(unsigned long)buffer_info->dma); |
|
4355 dev_kfree_skb(skb); |
|
4356 buffer_info->skb = NULL; |
|
4357 |
|
4358 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
4359 adapter->rx_buffer_len, |
|
4360 DMA_FROM_DEVICE); |
|
4361 buffer_info->dma = 0; |
|
4362 |
|
4363 adapter->alloc_rx_buff_failed++; |
|
4364 break; /* while !buffer_info->skb */ |
|
4365 } |
|
4366 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4367 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4368 |
|
4369 if (unlikely(++i == rx_ring->count)) |
|
4370 i = 0; |
|
4371 buffer_info = &rx_ring->buffer_info[i]; |
|
4372 } |
|
4373 |
|
4374 if (likely(rx_ring->next_to_use != i)) { |
|
4375 rx_ring->next_to_use = i; |
|
4376 if (unlikely(i-- == 0)) |
|
4377 i = (rx_ring->count - 1); |
|
4378 |
|
4379 /* Force memory writes to complete before letting h/w |
|
4380 * know there are new descriptors to fetch. (Only |
|
4381 * applicable for weak-ordered memory model archs, |
|
4382 * such as IA-64). */ |
|
4383 wmb(); |
|
4384 writel(i, hw->hw_addr + rx_ring->rdt); |
|
4385 } |
|
4386 } |
|
4387 |
|
4388 /** |
|
4389 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4390 * @adapter: |
|
4391 **/ |
|
4392 |
|
4393 static void e1000_smartspeed(struct e1000_adapter *adapter) |
|
4394 { |
|
4395 struct e1000_hw *hw = &adapter->hw; |
|
4396 u16 phy_status; |
|
4397 u16 phy_ctrl; |
|
4398 |
|
4399 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
|
4400 !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4401 return; |
|
4402 |
|
4403 if (adapter->smartspeed == 0) { |
|
4404 /* If Master/Slave config fault is asserted twice, |
|
4405 * we assume back-to-back */ |
|
4406 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4407 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4408 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4409 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4410 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4411 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4412 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4413 e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
|
4414 phy_ctrl); |
|
4415 adapter->smartspeed++; |
|
4416 if (!e1000_phy_setup_autoneg(hw) && |
|
4417 !e1000_read_phy_reg(hw, PHY_CTRL, |
|
4418 &phy_ctrl)) { |
|
4419 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4420 MII_CR_RESTART_AUTO_NEG); |
|
4421 e1000_write_phy_reg(hw, PHY_CTRL, |
|
4422 phy_ctrl); |
|
4423 } |
|
4424 } |
|
4425 return; |
|
4426 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4427 /* If still no link, perhaps using 2/3 pair cable */ |
|
4428 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4429 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4430 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
|
4431 if (!e1000_phy_setup_autoneg(hw) && |
|
4432 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { |
|
4433 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4434 MII_CR_RESTART_AUTO_NEG); |
|
4435 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
|
4436 } |
|
4437 } |
|
4438 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4439 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4440 adapter->smartspeed = 0; |
|
4441 } |
|
4442 |
|
4443 /** |
|
4444 * e1000_ioctl - |
|
4445 * @netdev: |
|
4446 * @ifreq: |
|
4447 * @cmd: |
|
4448 **/ |
|
4449 |
|
4450 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4451 { |
|
4452 switch (cmd) { |
|
4453 case SIOCGMIIPHY: |
|
4454 case SIOCGMIIREG: |
|
4455 case SIOCSMIIREG: |
|
4456 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4457 default: |
|
4458 return -EOPNOTSUPP; |
|
4459 } |
|
4460 } |
|
4461 |
|
4462 /** |
|
4463 * e1000_mii_ioctl - |
|
4464 * @netdev: |
|
4465 * @ifreq: |
|
4466 * @cmd: |
|
4467 **/ |
|
4468 |
|
4469 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
4470 int cmd) |
|
4471 { |
|
4472 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4473 struct e1000_hw *hw = &adapter->hw; |
|
4474 struct mii_ioctl_data *data = if_mii(ifr); |
|
4475 int retval; |
|
4476 u16 mii_reg; |
|
4477 u16 spddplx; |
|
4478 unsigned long flags; |
|
4479 |
|
4480 if (hw->media_type != e1000_media_type_copper) |
|
4481 return -EOPNOTSUPP; |
|
4482 |
|
4483 switch (cmd) { |
|
4484 case SIOCGMIIPHY: |
|
4485 data->phy_id = hw->phy_addr; |
|
4486 break; |
|
4487 case SIOCGMIIREG: |
|
4488 if (adapter->ecdev) return -EPERM; |
|
4489 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4490 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
|
4491 &data->val_out)) { |
|
4492 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4493 return -EIO; |
|
4494 } |
|
4495 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4496 break; |
|
4497 case SIOCSMIIREG: |
|
4498 if (adapter->ecdev) return -EPERM; |
|
4499 if (data->reg_num & ~(0x1F)) |
|
4500 return -EFAULT; |
|
4501 mii_reg = data->val_in; |
|
4502 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4503 if (e1000_write_phy_reg(hw, data->reg_num, |
|
4504 mii_reg)) { |
|
4505 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4506 return -EIO; |
|
4507 } |
|
4508 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4509 if (hw->media_type == e1000_media_type_copper) { |
|
4510 switch (data->reg_num) { |
|
4511 case PHY_CTRL: |
|
4512 if (mii_reg & MII_CR_POWER_DOWN) |
|
4513 break; |
|
4514 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4515 hw->autoneg = 1; |
|
4516 hw->autoneg_advertised = 0x2F; |
|
4517 } else { |
|
4518 if (mii_reg & 0x40) |
|
4519 spddplx = SPEED_1000; |
|
4520 else if (mii_reg & 0x2000) |
|
4521 spddplx = SPEED_100; |
|
4522 else |
|
4523 spddplx = SPEED_10; |
|
4524 spddplx += (mii_reg & 0x100) |
|
4525 ? DUPLEX_FULL : |
|
4526 DUPLEX_HALF; |
|
4527 retval = e1000_set_spd_dplx(adapter, |
|
4528 spddplx); |
|
4529 if (retval) |
|
4530 return retval; |
|
4531 } |
|
4532 if (netif_running(adapter->netdev)) |
|
4533 e1000_reinit_locked(adapter); |
|
4534 else |
|
4535 e1000_reset(adapter); |
|
4536 break; |
|
4537 case M88E1000_PHY_SPEC_CTRL: |
|
4538 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4539 if (e1000_phy_reset(hw)) |
|
4540 return -EIO; |
|
4541 break; |
|
4542 } |
|
4543 } else { |
|
4544 switch (data->reg_num) { |
|
4545 case PHY_CTRL: |
|
4546 if (mii_reg & MII_CR_POWER_DOWN) |
|
4547 break; |
|
4548 if (netif_running(adapter->netdev)) |
|
4549 e1000_reinit_locked(adapter); |
|
4550 else |
|
4551 e1000_reset(adapter); |
|
4552 break; |
|
4553 } |
|
4554 } |
|
4555 break; |
|
4556 default: |
|
4557 return -EOPNOTSUPP; |
|
4558 } |
|
4559 return E1000_SUCCESS; |
|
4560 } |
|
4561 |
|
4562 void e1000_pci_set_mwi(struct e1000_hw *hw) |
|
4563 { |
|
4564 struct e1000_adapter *adapter = hw->back; |
|
4565 int ret_val = pci_set_mwi(adapter->pdev); |
|
4566 |
|
4567 if (ret_val) |
|
4568 e_err(probe, "Error in setting MWI\n"); |
|
4569 } |
|
4570 |
|
4571 void e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
4572 { |
|
4573 struct e1000_adapter *adapter = hw->back; |
|
4574 |
|
4575 pci_clear_mwi(adapter->pdev); |
|
4576 } |
|
4577 |
|
4578 int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
|
4579 { |
|
4580 struct e1000_adapter *adapter = hw->back; |
|
4581 return pcix_get_mmrbc(adapter->pdev); |
|
4582 } |
|
4583 |
|
4584 void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
|
4585 { |
|
4586 struct e1000_adapter *adapter = hw->back; |
|
4587 pcix_set_mmrbc(adapter->pdev, mmrbc); |
|
4588 } |
|
4589 |
|
4590 void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
|
4591 { |
|
4592 outl(value, port); |
|
4593 } |
|
4594 |
|
4595 static void e1000_vlan_rx_register(struct net_device *netdev, |
|
4596 struct vlan_group *grp) |
|
4597 { |
|
4598 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4599 struct e1000_hw *hw = &adapter->hw; |
|
4600 u32 ctrl, rctl; |
|
4601 |
|
4602 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4603 e1000_irq_disable(adapter); |
|
4604 adapter->vlgrp = grp; |
|
4605 |
|
4606 if (grp) { |
|
4607 /* enable VLAN tag insert/strip */ |
|
4608 ctrl = er32(CTRL); |
|
4609 ctrl |= E1000_CTRL_VME; |
|
4610 ew32(CTRL, ctrl); |
|
4611 |
|
4612 /* enable VLAN receive filtering */ |
|
4613 rctl = er32(RCTL); |
|
4614 rctl &= ~E1000_RCTL_CFIEN; |
|
4615 if (!(netdev->flags & IFF_PROMISC)) |
|
4616 rctl |= E1000_RCTL_VFE; |
|
4617 ew32(RCTL, rctl); |
|
4618 e1000_update_mng_vlan(adapter); |
|
4619 } else { |
|
4620 /* disable VLAN tag insert/strip */ |
|
4621 ctrl = er32(CTRL); |
|
4622 ctrl &= ~E1000_CTRL_VME; |
|
4623 ew32(CTRL, ctrl); |
|
4624 |
|
4625 /* disable VLAN receive filtering */ |
|
4626 rctl = er32(RCTL); |
|
4627 rctl &= ~E1000_RCTL_VFE; |
|
4628 ew32(RCTL, rctl); |
|
4629 |
|
4630 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
4631 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4632 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4633 } |
|
4634 } |
|
4635 |
|
4636 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4637 e1000_irq_enable(adapter); |
|
4638 } |
|
4639 |
|
4640 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
4641 { |
|
4642 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4643 struct e1000_hw *hw = &adapter->hw; |
|
4644 u32 vfta, index; |
|
4645 |
|
4646 if ((hw->mng_cookie.status & |
|
4647 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4648 (vid == adapter->mng_vlan_id)) |
|
4649 return; |
|
4650 /* add VID to filter table */ |
|
4651 index = (vid >> 5) & 0x7F; |
|
4652 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4653 vfta |= (1 << (vid & 0x1F)); |
|
4654 e1000_write_vfta(hw, index, vfta); |
|
4655 } |
|
4656 |
|
4657 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
4658 { |
|
4659 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4660 struct e1000_hw *hw = &adapter->hw; |
|
4661 u32 vfta, index; |
|
4662 |
|
4663 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4664 e1000_irq_disable(adapter); |
|
4665 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
4666 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4667 e1000_irq_enable(adapter); |
|
4668 |
|
4669 /* remove VID from filter table */ |
|
4670 index = (vid >> 5) & 0x7F; |
|
4671 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4672 vfta &= ~(1 << (vid & 0x1F)); |
|
4673 e1000_write_vfta(hw, index, vfta); |
|
4674 } |
|
4675 |
|
4676 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
4677 { |
|
4678 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
4679 |
|
4680 if (adapter->vlgrp) { |
|
4681 u16 vid; |
|
4682 for (vid = 0; vid < VLAN_N_VID; vid++) { |
|
4683 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
4684 continue; |
|
4685 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
4686 } |
|
4687 } |
|
4688 } |
|
4689 |
|
4690 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
|
4691 { |
|
4692 struct e1000_hw *hw = &adapter->hw; |
|
4693 |
|
4694 hw->autoneg = 0; |
|
4695 |
|
4696 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
4697 if ((hw->media_type == e1000_media_type_fiber) && |
|
4698 spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
|
4699 e_err(probe, "Unsupported Speed/Duplex configuration\n"); |
|
4700 return -EINVAL; |
|
4701 } |
|
4702 |
|
4703 switch (spddplx) { |
|
4704 case SPEED_10 + DUPLEX_HALF: |
|
4705 hw->forced_speed_duplex = e1000_10_half; |
|
4706 break; |
|
4707 case SPEED_10 + DUPLEX_FULL: |
|
4708 hw->forced_speed_duplex = e1000_10_full; |
|
4709 break; |
|
4710 case SPEED_100 + DUPLEX_HALF: |
|
4711 hw->forced_speed_duplex = e1000_100_half; |
|
4712 break; |
|
4713 case SPEED_100 + DUPLEX_FULL: |
|
4714 hw->forced_speed_duplex = e1000_100_full; |
|
4715 break; |
|
4716 case SPEED_1000 + DUPLEX_FULL: |
|
4717 hw->autoneg = 1; |
|
4718 hw->autoneg_advertised = ADVERTISE_1000_FULL; |
|
4719 break; |
|
4720 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
4721 default: |
|
4722 e_err(probe, "Unsupported Speed/Duplex configuration\n"); |
|
4723 return -EINVAL; |
|
4724 } |
|
4725 return 0; |
|
4726 } |
|
4727 |
|
4728 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
|
4729 { |
|
4730 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4731 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4732 struct e1000_hw *hw = &adapter->hw; |
|
4733 u32 ctrl, ctrl_ext, rctl, status; |
|
4734 u32 wufc = adapter->wol; |
|
4735 #ifdef CONFIG_PM |
|
4736 int retval = 0; |
|
4737 #endif |
|
4738 |
|
4739 if (adapter->ecdev) |
|
4740 return -EBUSY; |
|
4741 |
|
4742 netif_device_detach(netdev); |
|
4743 |
|
4744 if (netif_running(netdev)) { |
|
4745 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
4746 e1000_down(adapter); |
|
4747 } |
|
4748 |
|
4749 #ifdef CONFIG_PM |
|
4750 retval = pci_save_state(pdev); |
|
4751 if (retval) |
|
4752 return retval; |
|
4753 #endif |
|
4754 |
|
4755 status = er32(STATUS); |
|
4756 if (status & E1000_STATUS_LU) |
|
4757 wufc &= ~E1000_WUFC_LNKC; |
|
4758 |
|
4759 if (wufc) { |
|
4760 e1000_setup_rctl(adapter); |
|
4761 e1000_set_rx_mode(netdev); |
|
4762 |
|
4763 /* turn on all-multi mode if wake on multicast is enabled */ |
|
4764 if (wufc & E1000_WUFC_MC) { |
|
4765 rctl = er32(RCTL); |
|
4766 rctl |= E1000_RCTL_MPE; |
|
4767 ew32(RCTL, rctl); |
|
4768 } |
|
4769 |
|
4770 if (hw->mac_type >= e1000_82540) { |
|
4771 ctrl = er32(CTRL); |
|
4772 /* advertise wake from D3Cold */ |
|
4773 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
4774 /* phy power management enable */ |
|
4775 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
4776 ctrl |= E1000_CTRL_ADVD3WUC | |
|
4777 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
4778 ew32(CTRL, ctrl); |
|
4779 } |
|
4780 |
|
4781 if (hw->media_type == e1000_media_type_fiber || |
|
4782 hw->media_type == e1000_media_type_internal_serdes) { |
|
4783 /* keep the laser running in D3 */ |
|
4784 ctrl_ext = er32(CTRL_EXT); |
|
4785 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
4786 ew32(CTRL_EXT, ctrl_ext); |
|
4787 } |
|
4788 |
|
4789 ew32(WUC, E1000_WUC_PME_EN); |
|
4790 ew32(WUFC, wufc); |
|
4791 } else { |
|
4792 ew32(WUC, 0); |
|
4793 ew32(WUFC, 0); |
|
4794 } |
|
4795 |
|
4796 e1000_release_manageability(adapter); |
|
4797 |
|
4798 *enable_wake = !!wufc; |
|
4799 |
|
4800 /* make sure adapter isn't asleep if manageability is enabled */ |
|
4801 if (adapter->en_mng_pt) |
|
4802 *enable_wake = true; |
|
4803 |
|
4804 if (netif_running(netdev)) |
|
4805 e1000_free_irq(adapter); |
|
4806 |
|
4807 pci_disable_device(pdev); |
|
4808 |
|
4809 return 0; |
|
4810 } |
|
4811 |
|
4812 #ifdef CONFIG_PM |
|
4813 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
4814 { |
|
4815 int retval; |
|
4816 bool wake; |
|
4817 |
|
4818 retval = __e1000_shutdown(pdev, &wake); |
|
4819 if (retval) |
|
4820 return retval; |
|
4821 |
|
4822 if (wake) { |
|
4823 pci_prepare_to_sleep(pdev); |
|
4824 } else { |
|
4825 pci_wake_from_d3(pdev, false); |
|
4826 pci_set_power_state(pdev, PCI_D3hot); |
|
4827 } |
|
4828 |
|
4829 return 0; |
|
4830 } |
|
4831 |
|
4832 static int e1000_resume(struct pci_dev *pdev) |
|
4833 { |
|
4834 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4835 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4836 struct e1000_hw *hw = &adapter->hw; |
|
4837 u32 err; |
|
4838 |
|
4839 if (adapter->ecdev) |
|
4840 return -EBUSY; |
|
4841 |
|
4842 pci_set_power_state(pdev, PCI_D0); |
|
4843 pci_restore_state(pdev); |
|
4844 pci_save_state(pdev); |
|
4845 |
|
4846 if (adapter->need_ioport) |
|
4847 err = pci_enable_device(pdev); |
|
4848 else |
|
4849 err = pci_enable_device_mem(pdev); |
|
4850 if (err) { |
|
4851 pr_err("Cannot enable PCI device from suspend\n"); |
|
4852 return err; |
|
4853 } |
|
4854 pci_set_master(pdev); |
|
4855 |
|
4856 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4857 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4858 |
|
4859 if (netif_running(netdev)) { |
|
4860 err = e1000_request_irq(adapter); |
|
4861 if (err) |
|
4862 return err; |
|
4863 } |
|
4864 |
|
4865 e1000_power_up_phy(adapter); |
|
4866 e1000_reset(adapter); |
|
4867 ew32(WUS, ~0); |
|
4868 |
|
4869 e1000_init_manageability(adapter); |
|
4870 |
|
4871 if (netif_running(netdev)) |
|
4872 e1000_up(adapter); |
|
4873 |
|
4874 if (!adapter->ecdev) netif_device_attach(netdev); |
|
4875 |
|
4876 return 0; |
|
4877 } |
|
4878 #endif |
|
4879 |
|
4880 static void e1000_shutdown(struct pci_dev *pdev) |
|
4881 { |
|
4882 bool wake; |
|
4883 |
|
4884 __e1000_shutdown(pdev, &wake); |
|
4885 |
|
4886 if (system_state == SYSTEM_POWER_OFF) { |
|
4887 pci_wake_from_d3(pdev, wake); |
|
4888 pci_set_power_state(pdev, PCI_D3hot); |
|
4889 } |
|
4890 } |
|
4891 |
|
4892 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
4893 /* |
|
4894 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
4895 * without having to re-enable interrupts. It's not called while |
|
4896 * the interrupt routine is executing. |
|
4897 */ |
|
4898 static void e1000_netpoll(struct net_device *netdev) |
|
4899 { |
|
4900 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4901 |
|
4902 disable_irq(adapter->pdev->irq); |
|
4903 e1000_intr(adapter->pdev->irq, netdev); |
|
4904 enable_irq(adapter->pdev->irq); |
|
4905 } |
|
4906 #endif |
|
4907 |
|
4908 /** |
|
4909 * e1000_io_error_detected - called when PCI error is detected |
|
4910 * @pdev: Pointer to PCI device |
|
4911 * @state: The current pci connection state |
|
4912 * |
|
4913 * This function is called after a PCI bus error affecting |
|
4914 * this device has been detected. |
|
4915 */ |
|
4916 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
4917 pci_channel_state_t state) |
|
4918 { |
|
4919 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4920 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4921 |
|
4922 netif_device_detach(netdev); |
|
4923 |
|
4924 if (state == pci_channel_io_perm_failure) |
|
4925 return PCI_ERS_RESULT_DISCONNECT; |
|
4926 |
|
4927 if (netif_running(netdev)) |
|
4928 e1000_down(adapter); |
|
4929 pci_disable_device(pdev); |
|
4930 |
|
4931 /* Request a slot slot reset. */ |
|
4932 return PCI_ERS_RESULT_NEED_RESET; |
|
4933 } |
|
4934 |
|
4935 /** |
|
4936 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
4937 * @pdev: Pointer to PCI device |
|
4938 * |
|
4939 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
4940 * resembles the first-half of the e1000_resume routine. |
|
4941 */ |
|
4942 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
4943 { |
|
4944 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4945 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4946 struct e1000_hw *hw = &adapter->hw; |
|
4947 int err; |
|
4948 |
|
4949 if (adapter->need_ioport) |
|
4950 err = pci_enable_device(pdev); |
|
4951 else |
|
4952 err = pci_enable_device_mem(pdev); |
|
4953 if (err) { |
|
4954 pr_err("Cannot re-enable PCI device after reset.\n"); |
|
4955 return PCI_ERS_RESULT_DISCONNECT; |
|
4956 } |
|
4957 pci_set_master(pdev); |
|
4958 |
|
4959 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4960 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4961 |
|
4962 e1000_reset(adapter); |
|
4963 ew32(WUS, ~0); |
|
4964 |
|
4965 return PCI_ERS_RESULT_RECOVERED; |
|
4966 } |
|
4967 |
|
4968 /** |
|
4969 * e1000_io_resume - called when traffic can start flowing again. |
|
4970 * @pdev: Pointer to PCI device |
|
4971 * |
|
4972 * This callback is called when the error recovery driver tells us that |
|
4973 * its OK to resume normal operation. Implementation resembles the |
|
4974 * second-half of the e1000_resume routine. |
|
4975 */ |
|
4976 static void e1000_io_resume(struct pci_dev *pdev) |
|
4977 { |
|
4978 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4979 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4980 |
|
4981 e1000_init_manageability(adapter); |
|
4982 |
|
4983 if (netif_running(netdev)) { |
|
4984 if (e1000_up(adapter)) { |
|
4985 pr_info("can't bring device back up after reset\n"); |
|
4986 return; |
|
4987 } |
|
4988 } |
|
4989 |
|
4990 netif_device_attach(netdev); |
|
4991 } |
|
4992 |
|
4993 /* e1000_main.c */ |