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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2006 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 *******************************************************************************/ |
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28 |
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29 #include "e1000.h" |
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30 #include <net/ip6_checksum.h> |
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31 |
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32 char e1000_driver_name[] = "e1000"; |
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33 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
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34 #define DRV_VERSION "7.3.21-k5-NAPI" |
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35 const char e1000_driver_version[] = DRV_VERSION; |
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36 static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
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37 |
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38 /* e1000_pci_tbl - PCI Device ID Table |
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39 * |
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40 * Last entry must be all 0s |
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41 * |
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42 * Macro expands to... |
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43 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} |
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44 */ |
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45 static struct pci_device_id e1000_pci_tbl[] = { |
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46 INTEL_E1000_ETHERNET_DEVICE(0x1000), |
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47 INTEL_E1000_ETHERNET_DEVICE(0x1001), |
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48 INTEL_E1000_ETHERNET_DEVICE(0x1004), |
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49 INTEL_E1000_ETHERNET_DEVICE(0x1008), |
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50 INTEL_E1000_ETHERNET_DEVICE(0x1009), |
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51 INTEL_E1000_ETHERNET_DEVICE(0x100C), |
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52 INTEL_E1000_ETHERNET_DEVICE(0x100D), |
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53 INTEL_E1000_ETHERNET_DEVICE(0x100E), |
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54 INTEL_E1000_ETHERNET_DEVICE(0x100F), |
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55 INTEL_E1000_ETHERNET_DEVICE(0x1010), |
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56 INTEL_E1000_ETHERNET_DEVICE(0x1011), |
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57 INTEL_E1000_ETHERNET_DEVICE(0x1012), |
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58 INTEL_E1000_ETHERNET_DEVICE(0x1013), |
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59 INTEL_E1000_ETHERNET_DEVICE(0x1014), |
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60 INTEL_E1000_ETHERNET_DEVICE(0x1015), |
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61 INTEL_E1000_ETHERNET_DEVICE(0x1016), |
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62 INTEL_E1000_ETHERNET_DEVICE(0x1017), |
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63 INTEL_E1000_ETHERNET_DEVICE(0x1018), |
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64 INTEL_E1000_ETHERNET_DEVICE(0x1019), |
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65 INTEL_E1000_ETHERNET_DEVICE(0x101A), |
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66 INTEL_E1000_ETHERNET_DEVICE(0x101D), |
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67 INTEL_E1000_ETHERNET_DEVICE(0x101E), |
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68 INTEL_E1000_ETHERNET_DEVICE(0x1026), |
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69 INTEL_E1000_ETHERNET_DEVICE(0x1027), |
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70 INTEL_E1000_ETHERNET_DEVICE(0x1028), |
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71 INTEL_E1000_ETHERNET_DEVICE(0x1075), |
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72 INTEL_E1000_ETHERNET_DEVICE(0x1076), |
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73 INTEL_E1000_ETHERNET_DEVICE(0x1077), |
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74 INTEL_E1000_ETHERNET_DEVICE(0x1078), |
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75 INTEL_E1000_ETHERNET_DEVICE(0x1079), |
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76 INTEL_E1000_ETHERNET_DEVICE(0x107A), |
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77 INTEL_E1000_ETHERNET_DEVICE(0x107B), |
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78 INTEL_E1000_ETHERNET_DEVICE(0x107C), |
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79 INTEL_E1000_ETHERNET_DEVICE(0x108A), |
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80 INTEL_E1000_ETHERNET_DEVICE(0x1099), |
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81 INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
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82 /* required last entry */ |
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83 {0,} |
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84 }; |
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85 |
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86 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
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87 |
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88 int e1000_up(struct e1000_adapter *adapter); |
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89 void e1000_down(struct e1000_adapter *adapter); |
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90 void e1000_reinit_locked(struct e1000_adapter *adapter); |
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91 void e1000_reset(struct e1000_adapter *adapter); |
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92 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx); |
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93 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
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94 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); |
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95 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); |
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96 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); |
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97 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
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98 struct e1000_tx_ring *txdr); |
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99 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
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100 struct e1000_rx_ring *rxdr); |
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101 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
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102 struct e1000_tx_ring *tx_ring); |
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103 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
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104 struct e1000_rx_ring *rx_ring); |
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105 void e1000_update_stats(struct e1000_adapter *adapter); |
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106 |
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107 static int e1000_init_module(void); |
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108 static void e1000_exit_module(void); |
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109 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
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110 static void __devexit e1000_remove(struct pci_dev *pdev); |
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111 static int e1000_alloc_queues(struct e1000_adapter *adapter); |
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112 static int e1000_sw_init(struct e1000_adapter *adapter); |
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113 static int e1000_open(struct net_device *netdev); |
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114 static int e1000_close(struct net_device *netdev); |
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115 static void e1000_configure_tx(struct e1000_adapter *adapter); |
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116 static void e1000_configure_rx(struct e1000_adapter *adapter); |
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117 static void e1000_setup_rctl(struct e1000_adapter *adapter); |
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118 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
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119 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); |
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120 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
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121 struct e1000_tx_ring *tx_ring); |
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122 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
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123 struct e1000_rx_ring *rx_ring); |
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124 static void e1000_set_rx_mode(struct net_device *netdev); |
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125 static void e1000_update_phy_info(unsigned long data); |
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126 static void e1000_watchdog(unsigned long data); |
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127 static void e1000_82547_tx_fifo_stall(unsigned long data); |
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128 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
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129 struct net_device *netdev); |
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130 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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131 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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132 static int e1000_set_mac(struct net_device *netdev, void *p); |
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133 static irqreturn_t e1000_intr(int irq, void *data); |
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134 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
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135 struct e1000_tx_ring *tx_ring); |
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136 static int e1000_clean(struct napi_struct *napi, int budget); |
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137 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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138 struct e1000_rx_ring *rx_ring, |
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139 int *work_done, int work_to_do); |
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140 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
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141 struct e1000_rx_ring *rx_ring, |
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142 int *work_done, int work_to_do); |
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143 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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144 struct e1000_rx_ring *rx_ring, |
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145 int cleaned_count); |
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146 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
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147 struct e1000_rx_ring *rx_ring, |
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148 int cleaned_count); |
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149 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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150 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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151 int cmd); |
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152 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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153 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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154 static void e1000_tx_timeout(struct net_device *dev); |
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155 static void e1000_reset_task(struct work_struct *work); |
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156 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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157 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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158 struct sk_buff *skb); |
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159 |
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160 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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161 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
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162 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); |
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163 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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164 |
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165 #ifdef CONFIG_PM |
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166 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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167 static int e1000_resume(struct pci_dev *pdev); |
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168 #endif |
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169 static void e1000_shutdown(struct pci_dev *pdev); |
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170 |
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171 #ifdef CONFIG_NET_POLL_CONTROLLER |
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172 /* for netdump / net console */ |
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173 static void e1000_netpoll (struct net_device *netdev); |
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174 #endif |
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175 |
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176 #define COPYBREAK_DEFAULT 256 |
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177 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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178 module_param(copybreak, uint, 0644); |
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179 MODULE_PARM_DESC(copybreak, |
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180 "Maximum size of packet that is copied to a new buffer on receive"); |
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181 |
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182 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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183 pci_channel_state_t state); |
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184 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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185 static void e1000_io_resume(struct pci_dev *pdev); |
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186 |
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187 static struct pci_error_handlers e1000_err_handler = { |
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188 .error_detected = e1000_io_error_detected, |
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189 .slot_reset = e1000_io_slot_reset, |
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190 .resume = e1000_io_resume, |
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191 }; |
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192 |
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193 static struct pci_driver e1000_driver = { |
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194 .name = e1000_driver_name, |
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195 .id_table = e1000_pci_tbl, |
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196 .probe = e1000_probe, |
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197 .remove = __devexit_p(e1000_remove), |
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198 #ifdef CONFIG_PM |
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199 /* Power Managment Hooks */ |
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200 .suspend = e1000_suspend, |
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201 .resume = e1000_resume, |
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202 #endif |
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203 .shutdown = e1000_shutdown, |
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204 .err_handler = &e1000_err_handler |
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205 }; |
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206 |
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207 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
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208 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); |
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209 MODULE_LICENSE("GPL"); |
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210 MODULE_VERSION(DRV_VERSION); |
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211 |
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212 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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213 module_param(debug, int, 0); |
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214 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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215 |
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216 /** |
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217 * e1000_init_module - Driver Registration Routine |
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218 * |
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219 * e1000_init_module is the first routine called when the driver is |
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220 * loaded. All it does is register with the PCI subsystem. |
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221 **/ |
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222 |
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223 static int __init e1000_init_module(void) |
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224 { |
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225 int ret; |
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226 printk(KERN_INFO "%s - version %s\n", |
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227 e1000_driver_string, e1000_driver_version); |
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228 |
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229 printk(KERN_INFO "%s\n", e1000_copyright); |
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230 |
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231 ret = pci_register_driver(&e1000_driver); |
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232 if (copybreak != COPYBREAK_DEFAULT) { |
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233 if (copybreak == 0) |
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234 printk(KERN_INFO "e1000: copybreak disabled\n"); |
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235 else |
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236 printk(KERN_INFO "e1000: copybreak enabled for " |
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237 "packets <= %u bytes\n", copybreak); |
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238 } |
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239 return ret; |
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240 } |
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241 |
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242 module_init(e1000_init_module); |
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243 |
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244 /** |
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245 * e1000_exit_module - Driver Exit Cleanup Routine |
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246 * |
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247 * e1000_exit_module is called just before the driver is removed |
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248 * from memory. |
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249 **/ |
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250 |
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251 static void __exit e1000_exit_module(void) |
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252 { |
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253 pci_unregister_driver(&e1000_driver); |
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254 } |
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255 |
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256 module_exit(e1000_exit_module); |
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257 |
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258 static int e1000_request_irq(struct e1000_adapter *adapter) |
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259 { |
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260 struct net_device *netdev = adapter->netdev; |
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261 irq_handler_t handler = e1000_intr; |
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262 int irq_flags = IRQF_SHARED; |
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263 int err; |
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264 |
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265 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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266 netdev); |
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267 if (err) { |
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268 DPRINTK(PROBE, ERR, |
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269 "Unable to allocate interrupt Error: %d\n", err); |
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270 } |
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271 |
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272 return err; |
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273 } |
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274 |
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275 static void e1000_free_irq(struct e1000_adapter *adapter) |
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276 { |
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277 struct net_device *netdev = adapter->netdev; |
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278 |
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279 free_irq(adapter->pdev->irq, netdev); |
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280 } |
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281 |
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282 /** |
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283 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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284 * @adapter: board private structure |
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285 **/ |
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286 |
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287 static void e1000_irq_disable(struct e1000_adapter *adapter) |
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288 { |
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289 struct e1000_hw *hw = &adapter->hw; |
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290 |
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291 ew32(IMC, ~0); |
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292 E1000_WRITE_FLUSH(); |
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293 synchronize_irq(adapter->pdev->irq); |
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294 } |
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295 |
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296 /** |
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297 * e1000_irq_enable - Enable default interrupt generation settings |
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298 * @adapter: board private structure |
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299 **/ |
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300 |
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301 static void e1000_irq_enable(struct e1000_adapter *adapter) |
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302 { |
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303 struct e1000_hw *hw = &adapter->hw; |
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304 |
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305 ew32(IMS, IMS_ENABLE_MASK); |
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306 E1000_WRITE_FLUSH(); |
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307 } |
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308 |
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309 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
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310 { |
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311 struct e1000_hw *hw = &adapter->hw; |
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312 struct net_device *netdev = adapter->netdev; |
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313 u16 vid = hw->mng_cookie.vlan_id; |
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314 u16 old_vid = adapter->mng_vlan_id; |
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315 if (adapter->vlgrp) { |
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316 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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317 if (hw->mng_cookie.status & |
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318 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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319 e1000_vlan_rx_add_vid(netdev, vid); |
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320 adapter->mng_vlan_id = vid; |
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321 } else |
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322 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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323 |
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324 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
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325 (vid != old_vid) && |
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326 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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327 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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328 } else |
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329 adapter->mng_vlan_id = vid; |
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330 } |
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331 } |
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332 |
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333 static void e1000_init_manageability(struct e1000_adapter *adapter) |
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334 { |
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335 struct e1000_hw *hw = &adapter->hw; |
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336 |
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337 if (adapter->en_mng_pt) { |
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338 u32 manc = er32(MANC); |
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339 |
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340 /* disable hardware interception of ARP */ |
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341 manc &= ~(E1000_MANC_ARP_EN); |
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342 |
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343 ew32(MANC, manc); |
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344 } |
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345 } |
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346 |
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347 static void e1000_release_manageability(struct e1000_adapter *adapter) |
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348 { |
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349 struct e1000_hw *hw = &adapter->hw; |
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350 |
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351 if (adapter->en_mng_pt) { |
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352 u32 manc = er32(MANC); |
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353 |
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354 /* re-enable hardware interception of ARP */ |
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355 manc |= E1000_MANC_ARP_EN; |
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356 |
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357 ew32(MANC, manc); |
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358 } |
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359 } |
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360 |
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361 /** |
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362 * e1000_configure - configure the hardware for RX and TX |
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363 * @adapter = private board structure |
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364 **/ |
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365 static void e1000_configure(struct e1000_adapter *adapter) |
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366 { |
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367 struct net_device *netdev = adapter->netdev; |
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368 int i; |
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369 |
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370 e1000_set_rx_mode(netdev); |
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371 |
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372 e1000_restore_vlan(adapter); |
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373 e1000_init_manageability(adapter); |
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374 |
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375 e1000_configure_tx(adapter); |
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376 e1000_setup_rctl(adapter); |
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377 e1000_configure_rx(adapter); |
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378 /* call E1000_DESC_UNUSED which always leaves |
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379 * at least 1 descriptor unused to make sure |
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380 * next_to_use != next_to_clean */ |
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381 for (i = 0; i < adapter->num_rx_queues; i++) { |
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382 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
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383 adapter->alloc_rx_buf(adapter, ring, |
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384 E1000_DESC_UNUSED(ring)); |
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385 } |
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386 |
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387 adapter->tx_queue_len = netdev->tx_queue_len; |
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388 } |
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389 |
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390 int e1000_up(struct e1000_adapter *adapter) |
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391 { |
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392 struct e1000_hw *hw = &adapter->hw; |
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393 |
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394 /* hardware has been reset, we need to reload some things */ |
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395 e1000_configure(adapter); |
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396 |
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397 clear_bit(__E1000_DOWN, &adapter->flags); |
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398 |
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399 napi_enable(&adapter->napi); |
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400 |
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401 e1000_irq_enable(adapter); |
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402 |
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403 netif_wake_queue(adapter->netdev); |
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404 |
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405 /* fire a link change interrupt to start the watchdog */ |
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406 ew32(ICS, E1000_ICS_LSC); |
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407 return 0; |
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408 } |
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409 |
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410 /** |
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411 * e1000_power_up_phy - restore link in case the phy was powered down |
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412 * @adapter: address of board private structure |
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413 * |
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414 * The phy may be powered down to save power and turn off link when the |
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415 * driver is unloaded and wake on lan is not enabled (among others) |
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416 * *** this routine MUST be followed by a call to e1000_reset *** |
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417 * |
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418 **/ |
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419 |
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420 void e1000_power_up_phy(struct e1000_adapter *adapter) |
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421 { |
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422 struct e1000_hw *hw = &adapter->hw; |
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423 u16 mii_reg = 0; |
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424 |
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425 /* Just clear the power down bit to wake the phy back up */ |
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426 if (hw->media_type == e1000_media_type_copper) { |
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427 /* according to the manual, the phy will retain its |
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428 * settings across a power-down/up cycle */ |
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429 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
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430 mii_reg &= ~MII_CR_POWER_DOWN; |
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431 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
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432 } |
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433 } |
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434 |
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435 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
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436 { |
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437 struct e1000_hw *hw = &adapter->hw; |
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438 |
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439 /* Power down the PHY so no link is implied when interface is down * |
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440 * The PHY cannot be powered down if any of the following is true * |
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441 * (a) WoL is enabled |
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442 * (b) AMT is active |
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443 * (c) SoL/IDER session is active */ |
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444 if (!adapter->wol && hw->mac_type >= e1000_82540 && |
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445 hw->media_type == e1000_media_type_copper) { |
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446 u16 mii_reg = 0; |
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447 |
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448 switch (hw->mac_type) { |
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449 case e1000_82540: |
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450 case e1000_82545: |
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451 case e1000_82545_rev_3: |
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452 case e1000_82546: |
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453 case e1000_82546_rev_3: |
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454 case e1000_82541: |
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455 case e1000_82541_rev_2: |
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456 case e1000_82547: |
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457 case e1000_82547_rev_2: |
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458 if (er32(MANC) & E1000_MANC_SMBUS_EN) |
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459 goto out; |
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460 break; |
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461 default: |
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462 goto out; |
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463 } |
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464 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
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465 mii_reg |= MII_CR_POWER_DOWN; |
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466 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
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467 mdelay(1); |
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468 } |
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469 out: |
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470 return; |
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471 } |
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472 |
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473 void e1000_down(struct e1000_adapter *adapter) |
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474 { |
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475 struct e1000_hw *hw = &adapter->hw; |
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476 struct net_device *netdev = adapter->netdev; |
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477 u32 rctl, tctl; |
|
478 |
|
479 /* signal that we're down so the interrupt handler does not |
|
480 * reschedule our watchdog timer */ |
|
481 set_bit(__E1000_DOWN, &adapter->flags); |
|
482 |
|
483 /* disable receives in the hardware */ |
|
484 rctl = er32(RCTL); |
|
485 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
486 /* flush and sleep below */ |
|
487 |
|
488 netif_tx_disable(netdev); |
|
489 |
|
490 /* disable transmits in the hardware */ |
|
491 tctl = er32(TCTL); |
|
492 tctl &= ~E1000_TCTL_EN; |
|
493 ew32(TCTL, tctl); |
|
494 /* flush both disables and wait for them to finish */ |
|
495 E1000_WRITE_FLUSH(); |
|
496 msleep(10); |
|
497 |
|
498 napi_disable(&adapter->napi); |
|
499 |
|
500 e1000_irq_disable(adapter); |
|
501 |
|
502 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
503 del_timer_sync(&adapter->watchdog_timer); |
|
504 del_timer_sync(&adapter->phy_info_timer); |
|
505 |
|
506 netdev->tx_queue_len = adapter->tx_queue_len; |
|
507 adapter->link_speed = 0; |
|
508 adapter->link_duplex = 0; |
|
509 netif_carrier_off(netdev); |
|
510 |
|
511 e1000_reset(adapter); |
|
512 e1000_clean_all_tx_rings(adapter); |
|
513 e1000_clean_all_rx_rings(adapter); |
|
514 } |
|
515 |
|
516 void e1000_reinit_locked(struct e1000_adapter *adapter) |
|
517 { |
|
518 WARN_ON(in_interrupt()); |
|
519 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
520 msleep(1); |
|
521 e1000_down(adapter); |
|
522 e1000_up(adapter); |
|
523 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
524 } |
|
525 |
|
526 void e1000_reset(struct e1000_adapter *adapter) |
|
527 { |
|
528 struct e1000_hw *hw = &adapter->hw; |
|
529 u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
|
530 bool legacy_pba_adjust = false; |
|
531 u16 hwm; |
|
532 |
|
533 /* Repartition Pba for greater than 9k mtu |
|
534 * To take effect CTRL.RST is required. |
|
535 */ |
|
536 |
|
537 switch (hw->mac_type) { |
|
538 case e1000_82542_rev2_0: |
|
539 case e1000_82542_rev2_1: |
|
540 case e1000_82543: |
|
541 case e1000_82544: |
|
542 case e1000_82540: |
|
543 case e1000_82541: |
|
544 case e1000_82541_rev_2: |
|
545 legacy_pba_adjust = true; |
|
546 pba = E1000_PBA_48K; |
|
547 break; |
|
548 case e1000_82545: |
|
549 case e1000_82545_rev_3: |
|
550 case e1000_82546: |
|
551 case e1000_82546_rev_3: |
|
552 pba = E1000_PBA_48K; |
|
553 break; |
|
554 case e1000_82547: |
|
555 case e1000_82547_rev_2: |
|
556 legacy_pba_adjust = true; |
|
557 pba = E1000_PBA_30K; |
|
558 break; |
|
559 case e1000_undefined: |
|
560 case e1000_num_macs: |
|
561 break; |
|
562 } |
|
563 |
|
564 if (legacy_pba_adjust) { |
|
565 if (hw->max_frame_size > E1000_RXBUFFER_8192) |
|
566 pba -= 8; /* allocate more FIFO for Tx */ |
|
567 |
|
568 if (hw->mac_type == e1000_82547) { |
|
569 adapter->tx_fifo_head = 0; |
|
570 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
571 adapter->tx_fifo_size = |
|
572 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
573 atomic_set(&adapter->tx_fifo_stall, 0); |
|
574 } |
|
575 } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
576 /* adjust PBA for jumbo frames */ |
|
577 ew32(PBA, pba); |
|
578 |
|
579 /* To maintain wire speed transmits, the Tx FIFO should be |
|
580 * large enough to accommodate two full transmit packets, |
|
581 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
582 * the Rx FIFO should be large enough to accommodate at least |
|
583 * one full receive packet and is similarly rounded up and |
|
584 * expressed in KB. */ |
|
585 pba = er32(PBA); |
|
586 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
587 tx_space = pba >> 16; |
|
588 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
589 pba &= 0xffff; |
|
590 /* |
|
591 * the tx fifo also stores 16 bytes of information about the tx |
|
592 * but don't include ethernet FCS because hardware appends it |
|
593 */ |
|
594 min_tx_space = (hw->max_frame_size + |
|
595 sizeof(struct e1000_tx_desc) - |
|
596 ETH_FCS_LEN) * 2; |
|
597 min_tx_space = ALIGN(min_tx_space, 1024); |
|
598 min_tx_space >>= 10; |
|
599 /* software strips receive CRC, so leave room for it */ |
|
600 min_rx_space = hw->max_frame_size; |
|
601 min_rx_space = ALIGN(min_rx_space, 1024); |
|
602 min_rx_space >>= 10; |
|
603 |
|
604 /* If current Tx allocation is less than the min Tx FIFO size, |
|
605 * and the min Tx FIFO size is less than the current Rx FIFO |
|
606 * allocation, take space away from current Rx allocation */ |
|
607 if (tx_space < min_tx_space && |
|
608 ((min_tx_space - tx_space) < pba)) { |
|
609 pba = pba - (min_tx_space - tx_space); |
|
610 |
|
611 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
612 switch (hw->mac_type) { |
|
613 case e1000_82545 ... e1000_82546_rev_3: |
|
614 pba &= ~(E1000_PBA_8K - 1); |
|
615 break; |
|
616 default: |
|
617 break; |
|
618 } |
|
619 |
|
620 /* if short on rx space, rx wins and must trump tx |
|
621 * adjustment or use Early Receive if available */ |
|
622 if (pba < min_rx_space) |
|
623 pba = min_rx_space; |
|
624 } |
|
625 } |
|
626 |
|
627 ew32(PBA, pba); |
|
628 |
|
629 /* |
|
630 * flow control settings: |
|
631 * The high water mark must be low enough to fit one full frame |
|
632 * (or the size used for early receive) above it in the Rx FIFO. |
|
633 * Set it to the lower of: |
|
634 * - 90% of the Rx FIFO size, and |
|
635 * - the full Rx FIFO size minus the early receive size (for parts |
|
636 * with ERT support assuming ERT set to E1000_ERT_2048), or |
|
637 * - the full Rx FIFO size minus one full frame |
|
638 */ |
|
639 hwm = min(((pba << 10) * 9 / 10), |
|
640 ((pba << 10) - hw->max_frame_size)); |
|
641 |
|
642 hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
|
643 hw->fc_low_water = hw->fc_high_water - 8; |
|
644 hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
|
645 hw->fc_send_xon = 1; |
|
646 hw->fc = hw->original_fc; |
|
647 |
|
648 /* Allow time for pending master requests to run */ |
|
649 e1000_reset_hw(hw); |
|
650 if (hw->mac_type >= e1000_82544) |
|
651 ew32(WUC, 0); |
|
652 |
|
653 if (e1000_init_hw(hw)) |
|
654 DPRINTK(PROBE, ERR, "Hardware Error\n"); |
|
655 e1000_update_mng_vlan(adapter); |
|
656 |
|
657 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
658 if (hw->mac_type >= e1000_82544 && |
|
659 hw->autoneg == 1 && |
|
660 hw->autoneg_advertised == ADVERTISE_1000_FULL) { |
|
661 u32 ctrl = er32(CTRL); |
|
662 /* clear phy power management bit if we are in gig only mode, |
|
663 * which if enabled will attempt negotiation to 100Mb, which |
|
664 * can cause a loss of link at power off or driver unload */ |
|
665 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
666 ew32(CTRL, ctrl); |
|
667 } |
|
668 |
|
669 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
670 ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
|
671 |
|
672 e1000_reset_adaptive(hw); |
|
673 e1000_phy_get_info(hw, &adapter->phy_info); |
|
674 |
|
675 e1000_release_manageability(adapter); |
|
676 } |
|
677 |
|
678 /** |
|
679 * Dump the eeprom for users having checksum issues |
|
680 **/ |
|
681 static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
|
682 { |
|
683 struct net_device *netdev = adapter->netdev; |
|
684 struct ethtool_eeprom eeprom; |
|
685 const struct ethtool_ops *ops = netdev->ethtool_ops; |
|
686 u8 *data; |
|
687 int i; |
|
688 u16 csum_old, csum_new = 0; |
|
689 |
|
690 eeprom.len = ops->get_eeprom_len(netdev); |
|
691 eeprom.offset = 0; |
|
692 |
|
693 data = kmalloc(eeprom.len, GFP_KERNEL); |
|
694 if (!data) { |
|
695 printk(KERN_ERR "Unable to allocate memory to dump EEPROM" |
|
696 " data\n"); |
|
697 return; |
|
698 } |
|
699 |
|
700 ops->get_eeprom(netdev, &eeprom, data); |
|
701 |
|
702 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + |
|
703 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); |
|
704 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) |
|
705 csum_new += data[i] + (data[i + 1] << 8); |
|
706 csum_new = EEPROM_SUM - csum_new; |
|
707 |
|
708 printk(KERN_ERR "/*********************/\n"); |
|
709 printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); |
|
710 printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); |
|
711 |
|
712 printk(KERN_ERR "Offset Values\n"); |
|
713 printk(KERN_ERR "======== ======\n"); |
|
714 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
|
715 |
|
716 printk(KERN_ERR "Include this output when contacting your support " |
|
717 "provider.\n"); |
|
718 printk(KERN_ERR "This is not a software error! Something bad " |
|
719 "happened to your hardware or\n"); |
|
720 printk(KERN_ERR "EEPROM image. Ignoring this " |
|
721 "problem could result in further problems,\n"); |
|
722 printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); |
|
723 printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " |
|
724 "which is invalid\n"); |
|
725 printk(KERN_ERR "and requires you to set the proper MAC " |
|
726 "address manually before continuing\n"); |
|
727 printk(KERN_ERR "to enable this network device.\n"); |
|
728 printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " |
|
729 "to your hardware vendor\n"); |
|
730 printk(KERN_ERR "or Intel Customer Support.\n"); |
|
731 printk(KERN_ERR "/*********************/\n"); |
|
732 |
|
733 kfree(data); |
|
734 } |
|
735 |
|
736 /** |
|
737 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not |
|
738 * @pdev: PCI device information struct |
|
739 * |
|
740 * Return true if an adapter needs ioport resources |
|
741 **/ |
|
742 static int e1000_is_need_ioport(struct pci_dev *pdev) |
|
743 { |
|
744 switch (pdev->device) { |
|
745 case E1000_DEV_ID_82540EM: |
|
746 case E1000_DEV_ID_82540EM_LOM: |
|
747 case E1000_DEV_ID_82540EP: |
|
748 case E1000_DEV_ID_82540EP_LOM: |
|
749 case E1000_DEV_ID_82540EP_LP: |
|
750 case E1000_DEV_ID_82541EI: |
|
751 case E1000_DEV_ID_82541EI_MOBILE: |
|
752 case E1000_DEV_ID_82541ER: |
|
753 case E1000_DEV_ID_82541ER_LOM: |
|
754 case E1000_DEV_ID_82541GI: |
|
755 case E1000_DEV_ID_82541GI_LF: |
|
756 case E1000_DEV_ID_82541GI_MOBILE: |
|
757 case E1000_DEV_ID_82544EI_COPPER: |
|
758 case E1000_DEV_ID_82544EI_FIBER: |
|
759 case E1000_DEV_ID_82544GC_COPPER: |
|
760 case E1000_DEV_ID_82544GC_LOM: |
|
761 case E1000_DEV_ID_82545EM_COPPER: |
|
762 case E1000_DEV_ID_82545EM_FIBER: |
|
763 case E1000_DEV_ID_82546EB_COPPER: |
|
764 case E1000_DEV_ID_82546EB_FIBER: |
|
765 case E1000_DEV_ID_82546EB_QUAD_COPPER: |
|
766 return true; |
|
767 default: |
|
768 return false; |
|
769 } |
|
770 } |
|
771 |
|
772 static const struct net_device_ops e1000_netdev_ops = { |
|
773 .ndo_open = e1000_open, |
|
774 .ndo_stop = e1000_close, |
|
775 .ndo_start_xmit = e1000_xmit_frame, |
|
776 .ndo_get_stats = e1000_get_stats, |
|
777 .ndo_set_rx_mode = e1000_set_rx_mode, |
|
778 .ndo_set_mac_address = e1000_set_mac, |
|
779 .ndo_tx_timeout = e1000_tx_timeout, |
|
780 .ndo_change_mtu = e1000_change_mtu, |
|
781 .ndo_do_ioctl = e1000_ioctl, |
|
782 .ndo_validate_addr = eth_validate_addr, |
|
783 |
|
784 .ndo_vlan_rx_register = e1000_vlan_rx_register, |
|
785 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
786 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
787 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
788 .ndo_poll_controller = e1000_netpoll, |
|
789 #endif |
|
790 }; |
|
791 |
|
792 /** |
|
793 * e1000_probe - Device Initialization Routine |
|
794 * @pdev: PCI device information struct |
|
795 * @ent: entry in e1000_pci_tbl |
|
796 * |
|
797 * Returns 0 on success, negative on failure |
|
798 * |
|
799 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
800 * The OS initialization, configuring of the adapter private structure, |
|
801 * and a hardware reset occur. |
|
802 **/ |
|
803 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
804 const struct pci_device_id *ent) |
|
805 { |
|
806 struct net_device *netdev; |
|
807 struct e1000_adapter *adapter; |
|
808 struct e1000_hw *hw; |
|
809 |
|
810 static int cards_found = 0; |
|
811 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
812 int i, err, pci_using_dac; |
|
813 u16 eeprom_data = 0; |
|
814 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
815 int bars, need_ioport; |
|
816 |
|
817 /* do not allocate ioport bars when not needed */ |
|
818 need_ioport = e1000_is_need_ioport(pdev); |
|
819 if (need_ioport) { |
|
820 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); |
|
821 err = pci_enable_device(pdev); |
|
822 } else { |
|
823 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
824 err = pci_enable_device_mem(pdev); |
|
825 } |
|
826 if (err) |
|
827 return err; |
|
828 |
|
829 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && |
|
830 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { |
|
831 pci_using_dac = 1; |
|
832 } else { |
|
833 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
|
834 if (err) { |
|
835 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
|
836 if (err) { |
|
837 E1000_ERR("No usable DMA configuration, " |
|
838 "aborting\n"); |
|
839 goto err_dma; |
|
840 } |
|
841 } |
|
842 pci_using_dac = 0; |
|
843 } |
|
844 |
|
845 err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
|
846 if (err) |
|
847 goto err_pci_reg; |
|
848 |
|
849 pci_set_master(pdev); |
|
850 |
|
851 err = -ENOMEM; |
|
852 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
853 if (!netdev) |
|
854 goto err_alloc_etherdev; |
|
855 |
|
856 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
857 |
|
858 pci_set_drvdata(pdev, netdev); |
|
859 adapter = netdev_priv(netdev); |
|
860 adapter->netdev = netdev; |
|
861 adapter->pdev = pdev; |
|
862 adapter->msg_enable = (1 << debug) - 1; |
|
863 adapter->bars = bars; |
|
864 adapter->need_ioport = need_ioport; |
|
865 |
|
866 hw = &adapter->hw; |
|
867 hw->back = adapter; |
|
868 |
|
869 err = -EIO; |
|
870 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
|
871 if (!hw->hw_addr) |
|
872 goto err_ioremap; |
|
873 |
|
874 if (adapter->need_ioport) { |
|
875 for (i = BAR_1; i <= BAR_5; i++) { |
|
876 if (pci_resource_len(pdev, i) == 0) |
|
877 continue; |
|
878 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
879 hw->io_base = pci_resource_start(pdev, i); |
|
880 break; |
|
881 } |
|
882 } |
|
883 } |
|
884 |
|
885 netdev->netdev_ops = &e1000_netdev_ops; |
|
886 e1000_set_ethtool_ops(netdev); |
|
887 netdev->watchdog_timeo = 5 * HZ; |
|
888 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
889 |
|
890 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
891 |
|
892 adapter->bd_number = cards_found; |
|
893 |
|
894 /* setup the private structure */ |
|
895 |
|
896 err = e1000_sw_init(adapter); |
|
897 if (err) |
|
898 goto err_sw_init; |
|
899 |
|
900 err = -EIO; |
|
901 |
|
902 if (hw->mac_type >= e1000_82543) { |
|
903 netdev->features = NETIF_F_SG | |
|
904 NETIF_F_HW_CSUM | |
|
905 NETIF_F_HW_VLAN_TX | |
|
906 NETIF_F_HW_VLAN_RX | |
|
907 NETIF_F_HW_VLAN_FILTER; |
|
908 } |
|
909 |
|
910 if ((hw->mac_type >= e1000_82544) && |
|
911 (hw->mac_type != e1000_82547)) |
|
912 netdev->features |= NETIF_F_TSO; |
|
913 |
|
914 if (pci_using_dac) |
|
915 netdev->features |= NETIF_F_HIGHDMA; |
|
916 |
|
917 netdev->vlan_features |= NETIF_F_TSO; |
|
918 netdev->vlan_features |= NETIF_F_HW_CSUM; |
|
919 netdev->vlan_features |= NETIF_F_SG; |
|
920 |
|
921 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
|
922 |
|
923 /* initialize eeprom parameters */ |
|
924 if (e1000_init_eeprom_params(hw)) { |
|
925 E1000_ERR("EEPROM initialization failed\n"); |
|
926 goto err_eeprom; |
|
927 } |
|
928 |
|
929 /* before reading the EEPROM, reset the controller to |
|
930 * put the device in a known good starting state */ |
|
931 |
|
932 e1000_reset_hw(hw); |
|
933 |
|
934 /* make sure the EEPROM is good */ |
|
935 if (e1000_validate_eeprom_checksum(hw) < 0) { |
|
936 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
|
937 e1000_dump_eeprom(adapter); |
|
938 /* |
|
939 * set MAC address to all zeroes to invalidate and temporary |
|
940 * disable this device for the user. This blocks regular |
|
941 * traffic while still permitting ethtool ioctls from reaching |
|
942 * the hardware as well as allowing the user to run the |
|
943 * interface after manually setting a hw addr using |
|
944 * `ip set address` |
|
945 */ |
|
946 memset(hw->mac_addr, 0, netdev->addr_len); |
|
947 } else { |
|
948 /* copy the MAC address out of the EEPROM */ |
|
949 if (e1000_read_mac_addr(hw)) |
|
950 DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
|
951 } |
|
952 /* don't block initalization here due to bad MAC address */ |
|
953 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
|
954 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); |
|
955 |
|
956 if (!is_valid_ether_addr(netdev->perm_addr)) |
|
957 DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
|
958 |
|
959 e1000_get_bus_info(hw); |
|
960 |
|
961 init_timer(&adapter->tx_fifo_stall_timer); |
|
962 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; |
|
963 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
|
964 |
|
965 init_timer(&adapter->watchdog_timer); |
|
966 adapter->watchdog_timer.function = &e1000_watchdog; |
|
967 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
968 |
|
969 init_timer(&adapter->phy_info_timer); |
|
970 adapter->phy_info_timer.function = &e1000_update_phy_info; |
|
971 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
972 |
|
973 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
974 |
|
975 e1000_check_options(adapter); |
|
976 |
|
977 /* Initial Wake on LAN setting |
|
978 * If APM wake is enabled in the EEPROM, |
|
979 * enable the ACPI Magic Packet filter |
|
980 */ |
|
981 |
|
982 switch (hw->mac_type) { |
|
983 case e1000_82542_rev2_0: |
|
984 case e1000_82542_rev2_1: |
|
985 case e1000_82543: |
|
986 break; |
|
987 case e1000_82544: |
|
988 e1000_read_eeprom(hw, |
|
989 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
990 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
991 break; |
|
992 case e1000_82546: |
|
993 case e1000_82546_rev_3: |
|
994 if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
|
995 e1000_read_eeprom(hw, |
|
996 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
997 break; |
|
998 } |
|
999 /* Fall Through */ |
|
1000 default: |
|
1001 e1000_read_eeprom(hw, |
|
1002 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1003 break; |
|
1004 } |
|
1005 if (eeprom_data & eeprom_apme_mask) |
|
1006 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1007 |
|
1008 /* now that we have the eeprom settings, apply the special cases |
|
1009 * where the eeprom may be wrong or the board simply won't support |
|
1010 * wake on lan on a particular port */ |
|
1011 switch (pdev->device) { |
|
1012 case E1000_DEV_ID_82546GB_PCIE: |
|
1013 adapter->eeprom_wol = 0; |
|
1014 break; |
|
1015 case E1000_DEV_ID_82546EB_FIBER: |
|
1016 case E1000_DEV_ID_82546GB_FIBER: |
|
1017 /* Wake events only supported on port A for dual fiber |
|
1018 * regardless of eeprom setting */ |
|
1019 if (er32(STATUS) & E1000_STATUS_FUNC_1) |
|
1020 adapter->eeprom_wol = 0; |
|
1021 break; |
|
1022 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1023 /* if quad port adapter, disable WoL on all but port A */ |
|
1024 if (global_quad_port_a != 0) |
|
1025 adapter->eeprom_wol = 0; |
|
1026 else |
|
1027 adapter->quad_port_a = 1; |
|
1028 /* Reset for multiple quad port adapters */ |
|
1029 if (++global_quad_port_a == 4) |
|
1030 global_quad_port_a = 0; |
|
1031 break; |
|
1032 } |
|
1033 |
|
1034 /* initialize the wol settings based on the eeprom settings */ |
|
1035 adapter->wol = adapter->eeprom_wol; |
|
1036 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
1037 |
|
1038 /* print bus type/speed/width info */ |
|
1039 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", |
|
1040 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
|
1041 ((hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : |
|
1042 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : |
|
1043 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : |
|
1044 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), |
|
1045 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : "32-bit")); |
|
1046 |
|
1047 printk("%pM\n", netdev->dev_addr); |
|
1048 |
|
1049 /* reset the hardware with the new settings */ |
|
1050 e1000_reset(adapter); |
|
1051 |
|
1052 strcpy(netdev->name, "eth%d"); |
|
1053 err = register_netdev(netdev); |
|
1054 if (err) |
|
1055 goto err_register; |
|
1056 |
|
1057 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
1058 netif_carrier_off(netdev); |
|
1059 |
|
1060 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
|
1061 |
|
1062 cards_found++; |
|
1063 return 0; |
|
1064 |
|
1065 err_register: |
|
1066 err_eeprom: |
|
1067 e1000_phy_hw_reset(hw); |
|
1068 |
|
1069 if (hw->flash_address) |
|
1070 iounmap(hw->flash_address); |
|
1071 kfree(adapter->tx_ring); |
|
1072 kfree(adapter->rx_ring); |
|
1073 err_sw_init: |
|
1074 iounmap(hw->hw_addr); |
|
1075 err_ioremap: |
|
1076 free_netdev(netdev); |
|
1077 err_alloc_etherdev: |
|
1078 pci_release_selected_regions(pdev, bars); |
|
1079 err_pci_reg: |
|
1080 err_dma: |
|
1081 pci_disable_device(pdev); |
|
1082 return err; |
|
1083 } |
|
1084 |
|
1085 /** |
|
1086 * e1000_remove - Device Removal Routine |
|
1087 * @pdev: PCI device information struct |
|
1088 * |
|
1089 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1090 * that it should release a PCI device. The could be caused by a |
|
1091 * Hot-Plug event, or because the driver is going to be removed from |
|
1092 * memory. |
|
1093 **/ |
|
1094 |
|
1095 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
1096 { |
|
1097 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1098 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1099 struct e1000_hw *hw = &adapter->hw; |
|
1100 |
|
1101 set_bit(__E1000_DOWN, &adapter->flags); |
|
1102 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
1103 del_timer_sync(&adapter->watchdog_timer); |
|
1104 del_timer_sync(&adapter->phy_info_timer); |
|
1105 |
|
1106 cancel_work_sync(&adapter->reset_task); |
|
1107 |
|
1108 e1000_release_manageability(adapter); |
|
1109 |
|
1110 unregister_netdev(netdev); |
|
1111 |
|
1112 e1000_phy_hw_reset(hw); |
|
1113 |
|
1114 kfree(adapter->tx_ring); |
|
1115 kfree(adapter->rx_ring); |
|
1116 |
|
1117 iounmap(hw->hw_addr); |
|
1118 if (hw->flash_address) |
|
1119 iounmap(hw->flash_address); |
|
1120 pci_release_selected_regions(pdev, adapter->bars); |
|
1121 |
|
1122 free_netdev(netdev); |
|
1123 |
|
1124 pci_disable_device(pdev); |
|
1125 } |
|
1126 |
|
1127 /** |
|
1128 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1129 * @adapter: board private structure to initialize |
|
1130 * |
|
1131 * e1000_sw_init initializes the Adapter private data structure. |
|
1132 * Fields are initialized based on PCI device information and |
|
1133 * OS network device settings (MTU size). |
|
1134 **/ |
|
1135 |
|
1136 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
1137 { |
|
1138 struct e1000_hw *hw = &adapter->hw; |
|
1139 struct net_device *netdev = adapter->netdev; |
|
1140 struct pci_dev *pdev = adapter->pdev; |
|
1141 |
|
1142 /* PCI config space info */ |
|
1143 |
|
1144 hw->vendor_id = pdev->vendor; |
|
1145 hw->device_id = pdev->device; |
|
1146 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
1147 hw->subsystem_id = pdev->subsystem_device; |
|
1148 hw->revision_id = pdev->revision; |
|
1149 |
|
1150 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
1151 |
|
1152 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1153 hw->max_frame_size = netdev->mtu + |
|
1154 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
1155 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
1156 |
|
1157 /* identify the MAC */ |
|
1158 |
|
1159 if (e1000_set_mac_type(hw)) { |
|
1160 DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
|
1161 return -EIO; |
|
1162 } |
|
1163 |
|
1164 switch (hw->mac_type) { |
|
1165 default: |
|
1166 break; |
|
1167 case e1000_82541: |
|
1168 case e1000_82547: |
|
1169 case e1000_82541_rev_2: |
|
1170 case e1000_82547_rev_2: |
|
1171 hw->phy_init_script = 1; |
|
1172 break; |
|
1173 } |
|
1174 |
|
1175 e1000_set_media_type(hw); |
|
1176 |
|
1177 hw->wait_autoneg_complete = false; |
|
1178 hw->tbi_compatibility_en = true; |
|
1179 hw->adaptive_ifs = true; |
|
1180 |
|
1181 /* Copper options */ |
|
1182 |
|
1183 if (hw->media_type == e1000_media_type_copper) { |
|
1184 hw->mdix = AUTO_ALL_MODES; |
|
1185 hw->disable_polarity_correction = false; |
|
1186 hw->master_slave = E1000_MASTER_SLAVE; |
|
1187 } |
|
1188 |
|
1189 adapter->num_tx_queues = 1; |
|
1190 adapter->num_rx_queues = 1; |
|
1191 |
|
1192 if (e1000_alloc_queues(adapter)) { |
|
1193 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); |
|
1194 return -ENOMEM; |
|
1195 } |
|
1196 |
|
1197 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1198 e1000_irq_disable(adapter); |
|
1199 |
|
1200 spin_lock_init(&adapter->stats_lock); |
|
1201 |
|
1202 set_bit(__E1000_DOWN, &adapter->flags); |
|
1203 |
|
1204 return 0; |
|
1205 } |
|
1206 |
|
1207 /** |
|
1208 * e1000_alloc_queues - Allocate memory for all rings |
|
1209 * @adapter: board private structure to initialize |
|
1210 * |
|
1211 * We allocate one ring per queue at run-time since we don't know the |
|
1212 * number of queues at compile-time. |
|
1213 **/ |
|
1214 |
|
1215 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1216 { |
|
1217 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1218 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1219 if (!adapter->tx_ring) |
|
1220 return -ENOMEM; |
|
1221 |
|
1222 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1223 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1224 if (!adapter->rx_ring) { |
|
1225 kfree(adapter->tx_ring); |
|
1226 return -ENOMEM; |
|
1227 } |
|
1228 |
|
1229 return E1000_SUCCESS; |
|
1230 } |
|
1231 |
|
1232 /** |
|
1233 * e1000_open - Called when a network interface is made active |
|
1234 * @netdev: network interface device structure |
|
1235 * |
|
1236 * Returns 0 on success, negative value on failure |
|
1237 * |
|
1238 * The open entry point is called when a network interface is made |
|
1239 * active by the system (IFF_UP). At this point all resources needed |
|
1240 * for transmit and receive operations are allocated, the interrupt |
|
1241 * handler is registered with the OS, the watchdog timer is started, |
|
1242 * and the stack is notified that the interface is ready. |
|
1243 **/ |
|
1244 |
|
1245 static int e1000_open(struct net_device *netdev) |
|
1246 { |
|
1247 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1248 struct e1000_hw *hw = &adapter->hw; |
|
1249 int err; |
|
1250 |
|
1251 /* disallow open during test */ |
|
1252 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1253 return -EBUSY; |
|
1254 |
|
1255 netif_carrier_off(netdev); |
|
1256 |
|
1257 /* allocate transmit descriptors */ |
|
1258 err = e1000_setup_all_tx_resources(adapter); |
|
1259 if (err) |
|
1260 goto err_setup_tx; |
|
1261 |
|
1262 /* allocate receive descriptors */ |
|
1263 err = e1000_setup_all_rx_resources(adapter); |
|
1264 if (err) |
|
1265 goto err_setup_rx; |
|
1266 |
|
1267 e1000_power_up_phy(adapter); |
|
1268 |
|
1269 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1270 if ((hw->mng_cookie.status & |
|
1271 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1272 e1000_update_mng_vlan(adapter); |
|
1273 } |
|
1274 |
|
1275 /* before we allocate an interrupt, we must be ready to handle it. |
|
1276 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1277 * as soon as we call pci_request_irq, so we have to setup our |
|
1278 * clean_rx handler before we do so. */ |
|
1279 e1000_configure(adapter); |
|
1280 |
|
1281 err = e1000_request_irq(adapter); |
|
1282 if (err) |
|
1283 goto err_req_irq; |
|
1284 |
|
1285 /* From here on the code is the same as e1000_up() */ |
|
1286 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1287 |
|
1288 napi_enable(&adapter->napi); |
|
1289 |
|
1290 e1000_irq_enable(adapter); |
|
1291 |
|
1292 netif_start_queue(netdev); |
|
1293 |
|
1294 /* fire a link status change interrupt to start the watchdog */ |
|
1295 ew32(ICS, E1000_ICS_LSC); |
|
1296 |
|
1297 return E1000_SUCCESS; |
|
1298 |
|
1299 err_req_irq: |
|
1300 e1000_power_down_phy(adapter); |
|
1301 e1000_free_all_rx_resources(adapter); |
|
1302 err_setup_rx: |
|
1303 e1000_free_all_tx_resources(adapter); |
|
1304 err_setup_tx: |
|
1305 e1000_reset(adapter); |
|
1306 |
|
1307 return err; |
|
1308 } |
|
1309 |
|
1310 /** |
|
1311 * e1000_close - Disables a network interface |
|
1312 * @netdev: network interface device structure |
|
1313 * |
|
1314 * Returns 0, this is not allowed to fail |
|
1315 * |
|
1316 * The close entry point is called when an interface is de-activated |
|
1317 * by the OS. The hardware is still under the drivers control, but |
|
1318 * needs to be disabled. A global MAC reset is issued to stop the |
|
1319 * hardware, and all transmit and receive resources are freed. |
|
1320 **/ |
|
1321 |
|
1322 static int e1000_close(struct net_device *netdev) |
|
1323 { |
|
1324 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1325 struct e1000_hw *hw = &adapter->hw; |
|
1326 |
|
1327 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1328 e1000_down(adapter); |
|
1329 e1000_power_down_phy(adapter); |
|
1330 e1000_free_irq(adapter); |
|
1331 |
|
1332 e1000_free_all_tx_resources(adapter); |
|
1333 e1000_free_all_rx_resources(adapter); |
|
1334 |
|
1335 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1336 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1337 if ((hw->mng_cookie.status & |
|
1338 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1339 !(adapter->vlgrp && |
|
1340 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1341 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1342 } |
|
1343 |
|
1344 return 0; |
|
1345 } |
|
1346 |
|
1347 /** |
|
1348 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1349 * @adapter: address of board private structure |
|
1350 * @start: address of beginning of memory |
|
1351 * @len: length of memory |
|
1352 **/ |
|
1353 static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
|
1354 unsigned long len) |
|
1355 { |
|
1356 struct e1000_hw *hw = &adapter->hw; |
|
1357 unsigned long begin = (unsigned long)start; |
|
1358 unsigned long end = begin + len; |
|
1359 |
|
1360 /* First rev 82545 and 82546 need to not allow any memory |
|
1361 * write location to cross 64k boundary due to errata 23 */ |
|
1362 if (hw->mac_type == e1000_82545 || |
|
1363 hw->mac_type == e1000_82546) { |
|
1364 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
|
1365 } |
|
1366 |
|
1367 return true; |
|
1368 } |
|
1369 |
|
1370 /** |
|
1371 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1372 * @adapter: board private structure |
|
1373 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1374 * |
|
1375 * Return 0 on success, negative on failure |
|
1376 **/ |
|
1377 |
|
1378 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1379 struct e1000_tx_ring *txdr) |
|
1380 { |
|
1381 struct pci_dev *pdev = adapter->pdev; |
|
1382 int size; |
|
1383 |
|
1384 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1385 txdr->buffer_info = vmalloc(size); |
|
1386 if (!txdr->buffer_info) { |
|
1387 DPRINTK(PROBE, ERR, |
|
1388 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1389 return -ENOMEM; |
|
1390 } |
|
1391 memset(txdr->buffer_info, 0, size); |
|
1392 |
|
1393 /* round up to nearest 4K */ |
|
1394 |
|
1395 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1396 txdr->size = ALIGN(txdr->size, 4096); |
|
1397 |
|
1398 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1399 if (!txdr->desc) { |
|
1400 setup_tx_desc_die: |
|
1401 vfree(txdr->buffer_info); |
|
1402 DPRINTK(PROBE, ERR, |
|
1403 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1404 return -ENOMEM; |
|
1405 } |
|
1406 |
|
1407 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1408 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1409 void *olddesc = txdr->desc; |
|
1410 dma_addr_t olddma = txdr->dma; |
|
1411 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
|
1412 "at %p\n", txdr->size, txdr->desc); |
|
1413 /* Try again, without freeing the previous */ |
|
1414 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1415 /* Failed allocation, critical failure */ |
|
1416 if (!txdr->desc) { |
|
1417 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1418 goto setup_tx_desc_die; |
|
1419 } |
|
1420 |
|
1421 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1422 /* give up */ |
|
1423 pci_free_consistent(pdev, txdr->size, txdr->desc, |
|
1424 txdr->dma); |
|
1425 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1426 DPRINTK(PROBE, ERR, |
|
1427 "Unable to allocate aligned memory " |
|
1428 "for the transmit descriptor ring\n"); |
|
1429 vfree(txdr->buffer_info); |
|
1430 return -ENOMEM; |
|
1431 } else { |
|
1432 /* Free old allocation, new allocation was successful */ |
|
1433 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1434 } |
|
1435 } |
|
1436 memset(txdr->desc, 0, txdr->size); |
|
1437 |
|
1438 txdr->next_to_use = 0; |
|
1439 txdr->next_to_clean = 0; |
|
1440 |
|
1441 return 0; |
|
1442 } |
|
1443 |
|
1444 /** |
|
1445 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1446 * (Descriptors) for all queues |
|
1447 * @adapter: board private structure |
|
1448 * |
|
1449 * Return 0 on success, negative on failure |
|
1450 **/ |
|
1451 |
|
1452 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1453 { |
|
1454 int i, err = 0; |
|
1455 |
|
1456 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1457 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1458 if (err) { |
|
1459 DPRINTK(PROBE, ERR, |
|
1460 "Allocation for Tx Queue %u failed\n", i); |
|
1461 for (i-- ; i >= 0; i--) |
|
1462 e1000_free_tx_resources(adapter, |
|
1463 &adapter->tx_ring[i]); |
|
1464 break; |
|
1465 } |
|
1466 } |
|
1467 |
|
1468 return err; |
|
1469 } |
|
1470 |
|
1471 /** |
|
1472 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1473 * @adapter: board private structure |
|
1474 * |
|
1475 * Configure the Tx unit of the MAC after a reset. |
|
1476 **/ |
|
1477 |
|
1478 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
1479 { |
|
1480 u64 tdba; |
|
1481 struct e1000_hw *hw = &adapter->hw; |
|
1482 u32 tdlen, tctl, tipg; |
|
1483 u32 ipgr1, ipgr2; |
|
1484 |
|
1485 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1486 |
|
1487 switch (adapter->num_tx_queues) { |
|
1488 case 1: |
|
1489 default: |
|
1490 tdba = adapter->tx_ring[0].dma; |
|
1491 tdlen = adapter->tx_ring[0].count * |
|
1492 sizeof(struct e1000_tx_desc); |
|
1493 ew32(TDLEN, tdlen); |
|
1494 ew32(TDBAH, (tdba >> 32)); |
|
1495 ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1496 ew32(TDT, 0); |
|
1497 ew32(TDH, 0); |
|
1498 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1499 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1500 break; |
|
1501 } |
|
1502 |
|
1503 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1504 if ((hw->media_type == e1000_media_type_fiber || |
|
1505 hw->media_type == e1000_media_type_internal_serdes)) |
|
1506 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1507 else |
|
1508 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1509 |
|
1510 switch (hw->mac_type) { |
|
1511 case e1000_82542_rev2_0: |
|
1512 case e1000_82542_rev2_1: |
|
1513 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1514 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1515 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1516 break; |
|
1517 default: |
|
1518 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1519 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1520 break; |
|
1521 } |
|
1522 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1523 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1524 ew32(TIPG, tipg); |
|
1525 |
|
1526 /* Set the Tx Interrupt Delay register */ |
|
1527 |
|
1528 ew32(TIDV, adapter->tx_int_delay); |
|
1529 if (hw->mac_type >= e1000_82540) |
|
1530 ew32(TADV, adapter->tx_abs_int_delay); |
|
1531 |
|
1532 /* Program the Transmit Control Register */ |
|
1533 |
|
1534 tctl = er32(TCTL); |
|
1535 tctl &= ~E1000_TCTL_CT; |
|
1536 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1537 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1538 |
|
1539 e1000_config_collision_dist(hw); |
|
1540 |
|
1541 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1542 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1543 |
|
1544 /* only set IDE if we are delaying interrupts using the timers */ |
|
1545 if (adapter->tx_int_delay) |
|
1546 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1547 |
|
1548 if (hw->mac_type < e1000_82543) |
|
1549 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1550 else |
|
1551 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1552 |
|
1553 /* Cache if we're 82544 running in PCI-X because we'll |
|
1554 * need this to apply a workaround later in the send path. */ |
|
1555 if (hw->mac_type == e1000_82544 && |
|
1556 hw->bus_type == e1000_bus_type_pcix) |
|
1557 adapter->pcix_82544 = 1; |
|
1558 |
|
1559 ew32(TCTL, tctl); |
|
1560 |
|
1561 } |
|
1562 |
|
1563 /** |
|
1564 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1565 * @adapter: board private structure |
|
1566 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1567 * |
|
1568 * Returns 0 on success, negative on failure |
|
1569 **/ |
|
1570 |
|
1571 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1572 struct e1000_rx_ring *rxdr) |
|
1573 { |
|
1574 struct pci_dev *pdev = adapter->pdev; |
|
1575 int size, desc_len; |
|
1576 |
|
1577 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1578 rxdr->buffer_info = vmalloc(size); |
|
1579 if (!rxdr->buffer_info) { |
|
1580 DPRINTK(PROBE, ERR, |
|
1581 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1582 return -ENOMEM; |
|
1583 } |
|
1584 memset(rxdr->buffer_info, 0, size); |
|
1585 |
|
1586 desc_len = sizeof(struct e1000_rx_desc); |
|
1587 |
|
1588 /* Round up to nearest 4K */ |
|
1589 |
|
1590 rxdr->size = rxdr->count * desc_len; |
|
1591 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1592 |
|
1593 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1594 |
|
1595 if (!rxdr->desc) { |
|
1596 DPRINTK(PROBE, ERR, |
|
1597 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1598 setup_rx_desc_die: |
|
1599 vfree(rxdr->buffer_info); |
|
1600 return -ENOMEM; |
|
1601 } |
|
1602 |
|
1603 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1604 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1605 void *olddesc = rxdr->desc; |
|
1606 dma_addr_t olddma = rxdr->dma; |
|
1607 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
|
1608 "at %p\n", rxdr->size, rxdr->desc); |
|
1609 /* Try again, without freeing the previous */ |
|
1610 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1611 /* Failed allocation, critical failure */ |
|
1612 if (!rxdr->desc) { |
|
1613 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1614 DPRINTK(PROBE, ERR, |
|
1615 "Unable to allocate memory " |
|
1616 "for the receive descriptor ring\n"); |
|
1617 goto setup_rx_desc_die; |
|
1618 } |
|
1619 |
|
1620 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1621 /* give up */ |
|
1622 pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
|
1623 rxdr->dma); |
|
1624 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1625 DPRINTK(PROBE, ERR, |
|
1626 "Unable to allocate aligned memory " |
|
1627 "for the receive descriptor ring\n"); |
|
1628 goto setup_rx_desc_die; |
|
1629 } else { |
|
1630 /* Free old allocation, new allocation was successful */ |
|
1631 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1632 } |
|
1633 } |
|
1634 memset(rxdr->desc, 0, rxdr->size); |
|
1635 |
|
1636 rxdr->next_to_clean = 0; |
|
1637 rxdr->next_to_use = 0; |
|
1638 rxdr->rx_skb_top = NULL; |
|
1639 |
|
1640 return 0; |
|
1641 } |
|
1642 |
|
1643 /** |
|
1644 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1645 * (Descriptors) for all queues |
|
1646 * @adapter: board private structure |
|
1647 * |
|
1648 * Return 0 on success, negative on failure |
|
1649 **/ |
|
1650 |
|
1651 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1652 { |
|
1653 int i, err = 0; |
|
1654 |
|
1655 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1656 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1657 if (err) { |
|
1658 DPRINTK(PROBE, ERR, |
|
1659 "Allocation for Rx Queue %u failed\n", i); |
|
1660 for (i-- ; i >= 0; i--) |
|
1661 e1000_free_rx_resources(adapter, |
|
1662 &adapter->rx_ring[i]); |
|
1663 break; |
|
1664 } |
|
1665 } |
|
1666 |
|
1667 return err; |
|
1668 } |
|
1669 |
|
1670 /** |
|
1671 * e1000_setup_rctl - configure the receive control registers |
|
1672 * @adapter: Board private structure |
|
1673 **/ |
|
1674 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1675 { |
|
1676 struct e1000_hw *hw = &adapter->hw; |
|
1677 u32 rctl; |
|
1678 |
|
1679 rctl = er32(RCTL); |
|
1680 |
|
1681 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1682 |
|
1683 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1684 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1685 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1686 |
|
1687 if (hw->tbi_compatibility_on == 1) |
|
1688 rctl |= E1000_RCTL_SBP; |
|
1689 else |
|
1690 rctl &= ~E1000_RCTL_SBP; |
|
1691 |
|
1692 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1693 rctl &= ~E1000_RCTL_LPE; |
|
1694 else |
|
1695 rctl |= E1000_RCTL_LPE; |
|
1696 |
|
1697 /* Setup buffer sizes */ |
|
1698 rctl &= ~E1000_RCTL_SZ_4096; |
|
1699 rctl |= E1000_RCTL_BSEX; |
|
1700 switch (adapter->rx_buffer_len) { |
|
1701 case E1000_RXBUFFER_2048: |
|
1702 default: |
|
1703 rctl |= E1000_RCTL_SZ_2048; |
|
1704 rctl &= ~E1000_RCTL_BSEX; |
|
1705 break; |
|
1706 case E1000_RXBUFFER_4096: |
|
1707 rctl |= E1000_RCTL_SZ_4096; |
|
1708 break; |
|
1709 case E1000_RXBUFFER_8192: |
|
1710 rctl |= E1000_RCTL_SZ_8192; |
|
1711 break; |
|
1712 case E1000_RXBUFFER_16384: |
|
1713 rctl |= E1000_RCTL_SZ_16384; |
|
1714 break; |
|
1715 } |
|
1716 |
|
1717 ew32(RCTL, rctl); |
|
1718 } |
|
1719 |
|
1720 /** |
|
1721 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
1722 * @adapter: board private structure |
|
1723 * |
|
1724 * Configure the Rx unit of the MAC after a reset. |
|
1725 **/ |
|
1726 |
|
1727 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
1728 { |
|
1729 u64 rdba; |
|
1730 struct e1000_hw *hw = &adapter->hw; |
|
1731 u32 rdlen, rctl, rxcsum; |
|
1732 |
|
1733 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
1734 rdlen = adapter->rx_ring[0].count * |
|
1735 sizeof(struct e1000_rx_desc); |
|
1736 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
1737 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
1738 } else { |
|
1739 rdlen = adapter->rx_ring[0].count * |
|
1740 sizeof(struct e1000_rx_desc); |
|
1741 adapter->clean_rx = e1000_clean_rx_irq; |
|
1742 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
1743 } |
|
1744 |
|
1745 /* disable receives while setting up the descriptors */ |
|
1746 rctl = er32(RCTL); |
|
1747 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1748 |
|
1749 /* set the Receive Delay Timer Register */ |
|
1750 ew32(RDTR, adapter->rx_int_delay); |
|
1751 |
|
1752 if (hw->mac_type >= e1000_82540) { |
|
1753 ew32(RADV, adapter->rx_abs_int_delay); |
|
1754 if (adapter->itr_setting != 0) |
|
1755 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
1756 } |
|
1757 |
|
1758 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
1759 * the Base and Length of the Rx Descriptor Ring */ |
|
1760 switch (adapter->num_rx_queues) { |
|
1761 case 1: |
|
1762 default: |
|
1763 rdba = adapter->rx_ring[0].dma; |
|
1764 ew32(RDLEN, rdlen); |
|
1765 ew32(RDBAH, (rdba >> 32)); |
|
1766 ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
1767 ew32(RDT, 0); |
|
1768 ew32(RDH, 0); |
|
1769 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
1770 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
1771 break; |
|
1772 } |
|
1773 |
|
1774 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
1775 if (hw->mac_type >= e1000_82543) { |
|
1776 rxcsum = er32(RXCSUM); |
|
1777 if (adapter->rx_csum) |
|
1778 rxcsum |= E1000_RXCSUM_TUOFL; |
|
1779 else |
|
1780 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
1781 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
1782 ew32(RXCSUM, rxcsum); |
|
1783 } |
|
1784 |
|
1785 /* Enable Receives */ |
|
1786 ew32(RCTL, rctl); |
|
1787 } |
|
1788 |
|
1789 /** |
|
1790 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
1791 * @adapter: board private structure |
|
1792 * @tx_ring: Tx descriptor ring for a specific queue |
|
1793 * |
|
1794 * Free all transmit software resources |
|
1795 **/ |
|
1796 |
|
1797 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
1798 struct e1000_tx_ring *tx_ring) |
|
1799 { |
|
1800 struct pci_dev *pdev = adapter->pdev; |
|
1801 |
|
1802 e1000_clean_tx_ring(adapter, tx_ring); |
|
1803 |
|
1804 vfree(tx_ring->buffer_info); |
|
1805 tx_ring->buffer_info = NULL; |
|
1806 |
|
1807 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
|
1808 |
|
1809 tx_ring->desc = NULL; |
|
1810 } |
|
1811 |
|
1812 /** |
|
1813 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
1814 * @adapter: board private structure |
|
1815 * |
|
1816 * Free all transmit software resources |
|
1817 **/ |
|
1818 |
|
1819 void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
1820 { |
|
1821 int i; |
|
1822 |
|
1823 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1824 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1825 } |
|
1826 |
|
1827 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
1828 struct e1000_buffer *buffer_info) |
|
1829 { |
|
1830 buffer_info->dma = 0; |
|
1831 if (buffer_info->skb) { |
|
1832 skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb, |
|
1833 DMA_TO_DEVICE); |
|
1834 dev_kfree_skb_any(buffer_info->skb); |
|
1835 buffer_info->skb = NULL; |
|
1836 } |
|
1837 buffer_info->time_stamp = 0; |
|
1838 /* buffer_info must be completely set up in the transmit path */ |
|
1839 } |
|
1840 |
|
1841 /** |
|
1842 * e1000_clean_tx_ring - Free Tx Buffers |
|
1843 * @adapter: board private structure |
|
1844 * @tx_ring: ring to be cleaned |
|
1845 **/ |
|
1846 |
|
1847 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
1848 struct e1000_tx_ring *tx_ring) |
|
1849 { |
|
1850 struct e1000_hw *hw = &adapter->hw; |
|
1851 struct e1000_buffer *buffer_info; |
|
1852 unsigned long size; |
|
1853 unsigned int i; |
|
1854 |
|
1855 /* Free all the Tx ring sk_buffs */ |
|
1856 |
|
1857 for (i = 0; i < tx_ring->count; i++) { |
|
1858 buffer_info = &tx_ring->buffer_info[i]; |
|
1859 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
1860 } |
|
1861 |
|
1862 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
1863 memset(tx_ring->buffer_info, 0, size); |
|
1864 |
|
1865 /* Zero out the descriptor ring */ |
|
1866 |
|
1867 memset(tx_ring->desc, 0, tx_ring->size); |
|
1868 |
|
1869 tx_ring->next_to_use = 0; |
|
1870 tx_ring->next_to_clean = 0; |
|
1871 tx_ring->last_tx_tso = 0; |
|
1872 |
|
1873 writel(0, hw->hw_addr + tx_ring->tdh); |
|
1874 writel(0, hw->hw_addr + tx_ring->tdt); |
|
1875 } |
|
1876 |
|
1877 /** |
|
1878 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
1879 * @adapter: board private structure |
|
1880 **/ |
|
1881 |
|
1882 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
1883 { |
|
1884 int i; |
|
1885 |
|
1886 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1887 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
1888 } |
|
1889 |
|
1890 /** |
|
1891 * e1000_free_rx_resources - Free Rx Resources |
|
1892 * @adapter: board private structure |
|
1893 * @rx_ring: ring to clean the resources from |
|
1894 * |
|
1895 * Free all receive software resources |
|
1896 **/ |
|
1897 |
|
1898 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
1899 struct e1000_rx_ring *rx_ring) |
|
1900 { |
|
1901 struct pci_dev *pdev = adapter->pdev; |
|
1902 |
|
1903 e1000_clean_rx_ring(adapter, rx_ring); |
|
1904 |
|
1905 vfree(rx_ring->buffer_info); |
|
1906 rx_ring->buffer_info = NULL; |
|
1907 |
|
1908 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
|
1909 |
|
1910 rx_ring->desc = NULL; |
|
1911 } |
|
1912 |
|
1913 /** |
|
1914 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
1915 * @adapter: board private structure |
|
1916 * |
|
1917 * Free all receive software resources |
|
1918 **/ |
|
1919 |
|
1920 void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
1921 { |
|
1922 int i; |
|
1923 |
|
1924 for (i = 0; i < adapter->num_rx_queues; i++) |
|
1925 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1926 } |
|
1927 |
|
1928 /** |
|
1929 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1930 * @adapter: board private structure |
|
1931 * @rx_ring: ring to free buffers from |
|
1932 **/ |
|
1933 |
|
1934 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
1935 struct e1000_rx_ring *rx_ring) |
|
1936 { |
|
1937 struct e1000_hw *hw = &adapter->hw; |
|
1938 struct e1000_buffer *buffer_info; |
|
1939 struct pci_dev *pdev = adapter->pdev; |
|
1940 unsigned long size; |
|
1941 unsigned int i; |
|
1942 |
|
1943 /* Free all the Rx ring sk_buffs */ |
|
1944 for (i = 0; i < rx_ring->count; i++) { |
|
1945 buffer_info = &rx_ring->buffer_info[i]; |
|
1946 if (buffer_info->dma && |
|
1947 adapter->clean_rx == e1000_clean_rx_irq) { |
|
1948 pci_unmap_single(pdev, buffer_info->dma, |
|
1949 buffer_info->length, |
|
1950 PCI_DMA_FROMDEVICE); |
|
1951 } else if (buffer_info->dma && |
|
1952 adapter->clean_rx == e1000_clean_jumbo_rx_irq) { |
|
1953 pci_unmap_page(pdev, buffer_info->dma, |
|
1954 buffer_info->length, |
|
1955 PCI_DMA_FROMDEVICE); |
|
1956 } |
|
1957 |
|
1958 buffer_info->dma = 0; |
|
1959 if (buffer_info->page) { |
|
1960 put_page(buffer_info->page); |
|
1961 buffer_info->page = NULL; |
|
1962 } |
|
1963 if (buffer_info->skb) { |
|
1964 dev_kfree_skb(buffer_info->skb); |
|
1965 buffer_info->skb = NULL; |
|
1966 } |
|
1967 } |
|
1968 |
|
1969 /* there also may be some cached data from a chained receive */ |
|
1970 if (rx_ring->rx_skb_top) { |
|
1971 dev_kfree_skb(rx_ring->rx_skb_top); |
|
1972 rx_ring->rx_skb_top = NULL; |
|
1973 } |
|
1974 |
|
1975 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
1976 memset(rx_ring->buffer_info, 0, size); |
|
1977 |
|
1978 /* Zero out the descriptor ring */ |
|
1979 memset(rx_ring->desc, 0, rx_ring->size); |
|
1980 |
|
1981 rx_ring->next_to_clean = 0; |
|
1982 rx_ring->next_to_use = 0; |
|
1983 |
|
1984 writel(0, hw->hw_addr + rx_ring->rdh); |
|
1985 writel(0, hw->hw_addr + rx_ring->rdt); |
|
1986 } |
|
1987 |
|
1988 /** |
|
1989 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
1990 * @adapter: board private structure |
|
1991 **/ |
|
1992 |
|
1993 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
1994 { |
|
1995 int i; |
|
1996 |
|
1997 for (i = 0; i < adapter->num_rx_queues; i++) |
|
1998 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
1999 } |
|
2000 |
|
2001 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2002 * and memory write and invalidate disabled for certain operations |
|
2003 */ |
|
2004 static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2005 { |
|
2006 struct e1000_hw *hw = &adapter->hw; |
|
2007 struct net_device *netdev = adapter->netdev; |
|
2008 u32 rctl; |
|
2009 |
|
2010 e1000_pci_clear_mwi(hw); |
|
2011 |
|
2012 rctl = er32(RCTL); |
|
2013 rctl |= E1000_RCTL_RST; |
|
2014 ew32(RCTL, rctl); |
|
2015 E1000_WRITE_FLUSH(); |
|
2016 mdelay(5); |
|
2017 |
|
2018 if (netif_running(netdev)) |
|
2019 e1000_clean_all_rx_rings(adapter); |
|
2020 } |
|
2021 |
|
2022 static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2023 { |
|
2024 struct e1000_hw *hw = &adapter->hw; |
|
2025 struct net_device *netdev = adapter->netdev; |
|
2026 u32 rctl; |
|
2027 |
|
2028 rctl = er32(RCTL); |
|
2029 rctl &= ~E1000_RCTL_RST; |
|
2030 ew32(RCTL, rctl); |
|
2031 E1000_WRITE_FLUSH(); |
|
2032 mdelay(5); |
|
2033 |
|
2034 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2035 e1000_pci_set_mwi(hw); |
|
2036 |
|
2037 if (netif_running(netdev)) { |
|
2038 /* No need to loop, because 82542 supports only 1 queue */ |
|
2039 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2040 e1000_configure_rx(adapter); |
|
2041 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2042 } |
|
2043 } |
|
2044 |
|
2045 /** |
|
2046 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2047 * @netdev: network interface device structure |
|
2048 * @p: pointer to an address structure |
|
2049 * |
|
2050 * Returns 0 on success, negative on failure |
|
2051 **/ |
|
2052 |
|
2053 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
2054 { |
|
2055 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2056 struct e1000_hw *hw = &adapter->hw; |
|
2057 struct sockaddr *addr = p; |
|
2058 |
|
2059 if (!is_valid_ether_addr(addr->sa_data)) |
|
2060 return -EADDRNOTAVAIL; |
|
2061 |
|
2062 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2063 |
|
2064 if (hw->mac_type == e1000_82542_rev2_0) |
|
2065 e1000_enter_82542_rst(adapter); |
|
2066 |
|
2067 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2068 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
|
2069 |
|
2070 e1000_rar_set(hw, hw->mac_addr, 0); |
|
2071 |
|
2072 if (hw->mac_type == e1000_82542_rev2_0) |
|
2073 e1000_leave_82542_rst(adapter); |
|
2074 |
|
2075 return 0; |
|
2076 } |
|
2077 |
|
2078 /** |
|
2079 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
|
2080 * @netdev: network interface device structure |
|
2081 * |
|
2082 * The set_rx_mode entry point is called whenever the unicast or multicast |
|
2083 * address lists or the network interface flags are updated. This routine is |
|
2084 * responsible for configuring the hardware for proper unicast, multicast, |
|
2085 * promiscuous mode, and all-multi behavior. |
|
2086 **/ |
|
2087 |
|
2088 static void e1000_set_rx_mode(struct net_device *netdev) |
|
2089 { |
|
2090 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2091 struct e1000_hw *hw = &adapter->hw; |
|
2092 struct netdev_hw_addr *ha; |
|
2093 bool use_uc = false; |
|
2094 struct dev_addr_list *mc_ptr; |
|
2095 u32 rctl; |
|
2096 u32 hash_value; |
|
2097 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2098 int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
|
2099 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
|
2100 |
|
2101 if (!mcarray) { |
|
2102 DPRINTK(PROBE, ERR, "memory allocation failed\n"); |
|
2103 return; |
|
2104 } |
|
2105 |
|
2106 /* Check for Promiscuous and All Multicast modes */ |
|
2107 |
|
2108 rctl = er32(RCTL); |
|
2109 |
|
2110 if (netdev->flags & IFF_PROMISC) { |
|
2111 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2112 rctl &= ~E1000_RCTL_VFE; |
|
2113 } else { |
|
2114 if (netdev->flags & IFF_ALLMULTI) |
|
2115 rctl |= E1000_RCTL_MPE; |
|
2116 else |
|
2117 rctl &= ~E1000_RCTL_MPE; |
|
2118 /* Enable VLAN filter if there is a VLAN */ |
|
2119 if (adapter->vlgrp) |
|
2120 rctl |= E1000_RCTL_VFE; |
|
2121 } |
|
2122 |
|
2123 if (netdev->uc.count > rar_entries - 1) { |
|
2124 rctl |= E1000_RCTL_UPE; |
|
2125 } else if (!(netdev->flags & IFF_PROMISC)) { |
|
2126 rctl &= ~E1000_RCTL_UPE; |
|
2127 use_uc = true; |
|
2128 } |
|
2129 |
|
2130 ew32(RCTL, rctl); |
|
2131 |
|
2132 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2133 |
|
2134 if (hw->mac_type == e1000_82542_rev2_0) |
|
2135 e1000_enter_82542_rst(adapter); |
|
2136 |
|
2137 /* load the first 14 addresses into the exact filters 1-14. Unicast |
|
2138 * addresses take precedence to avoid disabling unicast filtering |
|
2139 * when possible. |
|
2140 * |
|
2141 * RAR 0 is used for the station MAC adddress |
|
2142 * if there are not 14 addresses, go ahead and clear the filters |
|
2143 */ |
|
2144 i = 1; |
|
2145 if (use_uc) |
|
2146 list_for_each_entry(ha, &netdev->uc.list, list) { |
|
2147 if (i == rar_entries) |
|
2148 break; |
|
2149 e1000_rar_set(hw, ha->addr, i++); |
|
2150 } |
|
2151 |
|
2152 WARN_ON(i == rar_entries); |
|
2153 |
|
2154 mc_ptr = netdev->mc_list; |
|
2155 |
|
2156 for (; i < rar_entries; i++) { |
|
2157 if (mc_ptr) { |
|
2158 e1000_rar_set(hw, mc_ptr->da_addr, i); |
|
2159 mc_ptr = mc_ptr->next; |
|
2160 } else { |
|
2161 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2162 E1000_WRITE_FLUSH(); |
|
2163 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2164 E1000_WRITE_FLUSH(); |
|
2165 } |
|
2166 } |
|
2167 |
|
2168 /* load any remaining addresses into the hash table */ |
|
2169 |
|
2170 for (; mc_ptr; mc_ptr = mc_ptr->next) { |
|
2171 u32 hash_reg, hash_bit, mta; |
|
2172 hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr); |
|
2173 hash_reg = (hash_value >> 5) & 0x7F; |
|
2174 hash_bit = hash_value & 0x1F; |
|
2175 mta = (1 << hash_bit); |
|
2176 mcarray[hash_reg] |= mta; |
|
2177 } |
|
2178 |
|
2179 /* write the hash table completely, write from bottom to avoid |
|
2180 * both stupid write combining chipsets, and flushing each write */ |
|
2181 for (i = mta_reg_count - 1; i >= 0 ; i--) { |
|
2182 /* |
|
2183 * If we are on an 82544 has an errata where writing odd |
|
2184 * offsets overwrites the previous even offset, but writing |
|
2185 * backwards over the range solves the issue by always |
|
2186 * writing the odd offset first |
|
2187 */ |
|
2188 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); |
|
2189 } |
|
2190 E1000_WRITE_FLUSH(); |
|
2191 |
|
2192 if (hw->mac_type == e1000_82542_rev2_0) |
|
2193 e1000_leave_82542_rst(adapter); |
|
2194 |
|
2195 kfree(mcarray); |
|
2196 } |
|
2197 |
|
2198 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2199 * the phy */ |
|
2200 |
|
2201 static void e1000_update_phy_info(unsigned long data) |
|
2202 { |
|
2203 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2204 struct e1000_hw *hw = &adapter->hw; |
|
2205 e1000_phy_get_info(hw, &adapter->phy_info); |
|
2206 } |
|
2207 |
|
2208 /** |
|
2209 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2210 * @data: pointer to adapter cast into an unsigned long |
|
2211 **/ |
|
2212 |
|
2213 static void e1000_82547_tx_fifo_stall(unsigned long data) |
|
2214 { |
|
2215 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2216 struct e1000_hw *hw = &adapter->hw; |
|
2217 struct net_device *netdev = adapter->netdev; |
|
2218 u32 tctl; |
|
2219 |
|
2220 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2221 if ((er32(TDT) == er32(TDH)) && |
|
2222 (er32(TDFT) == er32(TDFH)) && |
|
2223 (er32(TDFTS) == er32(TDFHS))) { |
|
2224 tctl = er32(TCTL); |
|
2225 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
2226 ew32(TDFT, adapter->tx_head_addr); |
|
2227 ew32(TDFH, adapter->tx_head_addr); |
|
2228 ew32(TDFTS, adapter->tx_head_addr); |
|
2229 ew32(TDFHS, adapter->tx_head_addr); |
|
2230 ew32(TCTL, tctl); |
|
2231 E1000_WRITE_FLUSH(); |
|
2232 |
|
2233 adapter->tx_fifo_head = 0; |
|
2234 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2235 netif_wake_queue(netdev); |
|
2236 } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
|
2237 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2238 } |
|
2239 } |
|
2240 } |
|
2241 |
|
2242 static bool e1000_has_link(struct e1000_adapter *adapter) |
|
2243 { |
|
2244 struct e1000_hw *hw = &adapter->hw; |
|
2245 bool link_active = false; |
|
2246 |
|
2247 /* get_link_status is set on LSC (link status) interrupt or |
|
2248 * rx sequence error interrupt. get_link_status will stay |
|
2249 * false until the e1000_check_for_link establishes link |
|
2250 * for copper adapters ONLY |
|
2251 */ |
|
2252 switch (hw->media_type) { |
|
2253 case e1000_media_type_copper: |
|
2254 if (hw->get_link_status) { |
|
2255 e1000_check_for_link(hw); |
|
2256 link_active = !hw->get_link_status; |
|
2257 } else { |
|
2258 link_active = true; |
|
2259 } |
|
2260 break; |
|
2261 case e1000_media_type_fiber: |
|
2262 e1000_check_for_link(hw); |
|
2263 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
2264 break; |
|
2265 case e1000_media_type_internal_serdes: |
|
2266 e1000_check_for_link(hw); |
|
2267 link_active = hw->serdes_has_link; |
|
2268 break; |
|
2269 default: |
|
2270 break; |
|
2271 } |
|
2272 |
|
2273 return link_active; |
|
2274 } |
|
2275 |
|
2276 /** |
|
2277 * e1000_watchdog - Timer Call-back |
|
2278 * @data: pointer to adapter cast into an unsigned long |
|
2279 **/ |
|
2280 static void e1000_watchdog(unsigned long data) |
|
2281 { |
|
2282 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2283 struct e1000_hw *hw = &adapter->hw; |
|
2284 struct net_device *netdev = adapter->netdev; |
|
2285 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2286 u32 link, tctl; |
|
2287 |
|
2288 link = e1000_has_link(adapter); |
|
2289 if ((netif_carrier_ok(netdev)) && link) |
|
2290 goto link_up; |
|
2291 |
|
2292 if (link) { |
|
2293 if (!netif_carrier_ok(netdev)) { |
|
2294 u32 ctrl; |
|
2295 bool txb2b = true; |
|
2296 /* update snapshot of PHY registers on LSC */ |
|
2297 e1000_get_speed_and_duplex(hw, |
|
2298 &adapter->link_speed, |
|
2299 &adapter->link_duplex); |
|
2300 |
|
2301 ctrl = er32(CTRL); |
|
2302 printk(KERN_INFO "e1000: %s NIC Link is Up %d Mbps %s, " |
|
2303 "Flow Control: %s\n", |
|
2304 netdev->name, |
|
2305 adapter->link_speed, |
|
2306 adapter->link_duplex == FULL_DUPLEX ? |
|
2307 "Full Duplex" : "Half Duplex", |
|
2308 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2309 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2310 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2311 E1000_CTRL_TFCE) ? "TX" : "None" ))); |
|
2312 |
|
2313 /* tweak tx_queue_len according to speed/duplex |
|
2314 * and adjust the timeout factor */ |
|
2315 netdev->tx_queue_len = adapter->tx_queue_len; |
|
2316 adapter->tx_timeout_factor = 1; |
|
2317 switch (adapter->link_speed) { |
|
2318 case SPEED_10: |
|
2319 txb2b = false; |
|
2320 netdev->tx_queue_len = 10; |
|
2321 adapter->tx_timeout_factor = 16; |
|
2322 break; |
|
2323 case SPEED_100: |
|
2324 txb2b = false; |
|
2325 netdev->tx_queue_len = 100; |
|
2326 /* maybe add some timeout factor ? */ |
|
2327 break; |
|
2328 } |
|
2329 |
|
2330 /* enable transmits in the hardware */ |
|
2331 tctl = er32(TCTL); |
|
2332 tctl |= E1000_TCTL_EN; |
|
2333 ew32(TCTL, tctl); |
|
2334 |
|
2335 netif_carrier_on(netdev); |
|
2336 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2337 mod_timer(&adapter->phy_info_timer, |
|
2338 round_jiffies(jiffies + 2 * HZ)); |
|
2339 adapter->smartspeed = 0; |
|
2340 } |
|
2341 } else { |
|
2342 if (netif_carrier_ok(netdev)) { |
|
2343 adapter->link_speed = 0; |
|
2344 adapter->link_duplex = 0; |
|
2345 printk(KERN_INFO "e1000: %s NIC Link is Down\n", |
|
2346 netdev->name); |
|
2347 netif_carrier_off(netdev); |
|
2348 |
|
2349 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2350 mod_timer(&adapter->phy_info_timer, |
|
2351 round_jiffies(jiffies + 2 * HZ)); |
|
2352 } |
|
2353 |
|
2354 e1000_smartspeed(adapter); |
|
2355 } |
|
2356 |
|
2357 link_up: |
|
2358 e1000_update_stats(adapter); |
|
2359 |
|
2360 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2361 adapter->tpt_old = adapter->stats.tpt; |
|
2362 hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2363 adapter->colc_old = adapter->stats.colc; |
|
2364 |
|
2365 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2366 adapter->gorcl_old = adapter->stats.gorcl; |
|
2367 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2368 adapter->gotcl_old = adapter->stats.gotcl; |
|
2369 |
|
2370 e1000_update_adaptive(hw); |
|
2371 |
|
2372 if (!netif_carrier_ok(netdev)) { |
|
2373 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2374 /* We've lost link, so the controller stops DMA, |
|
2375 * but we've got queued Tx work that's never going |
|
2376 * to get done, so reset controller to flush Tx. |
|
2377 * (Do the reset outside of interrupt context). */ |
|
2378 adapter->tx_timeout_count++; |
|
2379 schedule_work(&adapter->reset_task); |
|
2380 /* return immediately since reset is imminent */ |
|
2381 return; |
|
2382 } |
|
2383 } |
|
2384 |
|
2385 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2386 ew32(ICS, E1000_ICS_RXDMT0); |
|
2387 |
|
2388 /* Force detection of hung controller every watchdog period */ |
|
2389 adapter->detect_tx_hung = true; |
|
2390 |
|
2391 /* Reset the timer */ |
|
2392 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2393 mod_timer(&adapter->watchdog_timer, |
|
2394 round_jiffies(jiffies + 2 * HZ)); |
|
2395 } |
|
2396 |
|
2397 enum latency_range { |
|
2398 lowest_latency = 0, |
|
2399 low_latency = 1, |
|
2400 bulk_latency = 2, |
|
2401 latency_invalid = 255 |
|
2402 }; |
|
2403 |
|
2404 /** |
|
2405 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2406 * @adapter: pointer to adapter |
|
2407 * @itr_setting: current adapter->itr |
|
2408 * @packets: the number of packets during this measurement interval |
|
2409 * @bytes: the number of bytes during this measurement interval |
|
2410 * |
|
2411 * Stores a new ITR value based on packets and byte |
|
2412 * counts during the last interrupt. The advantage of per interrupt |
|
2413 * computation is faster updates and more accurate ITR for the current |
|
2414 * traffic pattern. Constants in this function were computed |
|
2415 * based on theoretical maximum wire speed and thresholds were set based |
|
2416 * on testing data as well as attempting to minimize response time |
|
2417 * while increasing bulk throughput. |
|
2418 * this functionality is controlled by the InterruptThrottleRate module |
|
2419 * parameter (see e1000_param.c) |
|
2420 **/ |
|
2421 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2422 u16 itr_setting, int packets, int bytes) |
|
2423 { |
|
2424 unsigned int retval = itr_setting; |
|
2425 struct e1000_hw *hw = &adapter->hw; |
|
2426 |
|
2427 if (unlikely(hw->mac_type < e1000_82540)) |
|
2428 goto update_itr_done; |
|
2429 |
|
2430 if (packets == 0) |
|
2431 goto update_itr_done; |
|
2432 |
|
2433 switch (itr_setting) { |
|
2434 case lowest_latency: |
|
2435 /* jumbo frames get bulk treatment*/ |
|
2436 if (bytes/packets > 8000) |
|
2437 retval = bulk_latency; |
|
2438 else if ((packets < 5) && (bytes > 512)) |
|
2439 retval = low_latency; |
|
2440 break; |
|
2441 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2442 if (bytes > 10000) { |
|
2443 /* jumbo frames need bulk latency setting */ |
|
2444 if (bytes/packets > 8000) |
|
2445 retval = bulk_latency; |
|
2446 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2447 retval = bulk_latency; |
|
2448 else if ((packets > 35)) |
|
2449 retval = lowest_latency; |
|
2450 } else if (bytes/packets > 2000) |
|
2451 retval = bulk_latency; |
|
2452 else if (packets <= 2 && bytes < 512) |
|
2453 retval = lowest_latency; |
|
2454 break; |
|
2455 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2456 if (bytes > 25000) { |
|
2457 if (packets > 35) |
|
2458 retval = low_latency; |
|
2459 } else if (bytes < 6000) { |
|
2460 retval = low_latency; |
|
2461 } |
|
2462 break; |
|
2463 } |
|
2464 |
|
2465 update_itr_done: |
|
2466 return retval; |
|
2467 } |
|
2468 |
|
2469 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2470 { |
|
2471 struct e1000_hw *hw = &adapter->hw; |
|
2472 u16 current_itr; |
|
2473 u32 new_itr = adapter->itr; |
|
2474 |
|
2475 if (unlikely(hw->mac_type < e1000_82540)) |
|
2476 return; |
|
2477 |
|
2478 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2479 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2480 current_itr = 0; |
|
2481 new_itr = 4000; |
|
2482 goto set_itr_now; |
|
2483 } |
|
2484 |
|
2485 adapter->tx_itr = e1000_update_itr(adapter, |
|
2486 adapter->tx_itr, |
|
2487 adapter->total_tx_packets, |
|
2488 adapter->total_tx_bytes); |
|
2489 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2490 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2491 adapter->tx_itr = low_latency; |
|
2492 |
|
2493 adapter->rx_itr = e1000_update_itr(adapter, |
|
2494 adapter->rx_itr, |
|
2495 adapter->total_rx_packets, |
|
2496 adapter->total_rx_bytes); |
|
2497 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2498 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2499 adapter->rx_itr = low_latency; |
|
2500 |
|
2501 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2502 |
|
2503 switch (current_itr) { |
|
2504 /* counts and packets in update_itr are dependent on these numbers */ |
|
2505 case lowest_latency: |
|
2506 new_itr = 70000; |
|
2507 break; |
|
2508 case low_latency: |
|
2509 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2510 break; |
|
2511 case bulk_latency: |
|
2512 new_itr = 4000; |
|
2513 break; |
|
2514 default: |
|
2515 break; |
|
2516 } |
|
2517 |
|
2518 set_itr_now: |
|
2519 if (new_itr != adapter->itr) { |
|
2520 /* this attempts to bias the interrupt rate towards Bulk |
|
2521 * by adding intermediate steps when interrupt rate is |
|
2522 * increasing */ |
|
2523 new_itr = new_itr > adapter->itr ? |
|
2524 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2525 new_itr; |
|
2526 adapter->itr = new_itr; |
|
2527 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2528 } |
|
2529 |
|
2530 return; |
|
2531 } |
|
2532 |
|
2533 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2534 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2535 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2536 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2537 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2538 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2539 |
|
2540 static int e1000_tso(struct e1000_adapter *adapter, |
|
2541 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2542 { |
|
2543 struct e1000_context_desc *context_desc; |
|
2544 struct e1000_buffer *buffer_info; |
|
2545 unsigned int i; |
|
2546 u32 cmd_length = 0; |
|
2547 u16 ipcse = 0, tucse, mss; |
|
2548 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
2549 int err; |
|
2550 |
|
2551 if (skb_is_gso(skb)) { |
|
2552 if (skb_header_cloned(skb)) { |
|
2553 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2554 if (err) |
|
2555 return err; |
|
2556 } |
|
2557 |
|
2558 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2559 mss = skb_shinfo(skb)->gso_size; |
|
2560 if (skb->protocol == htons(ETH_P_IP)) { |
|
2561 struct iphdr *iph = ip_hdr(skb); |
|
2562 iph->tot_len = 0; |
|
2563 iph->check = 0; |
|
2564 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2565 iph->daddr, 0, |
|
2566 IPPROTO_TCP, |
|
2567 0); |
|
2568 cmd_length = E1000_TXD_CMD_IP; |
|
2569 ipcse = skb_transport_offset(skb) - 1; |
|
2570 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2571 ipv6_hdr(skb)->payload_len = 0; |
|
2572 tcp_hdr(skb)->check = |
|
2573 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2574 &ipv6_hdr(skb)->daddr, |
|
2575 0, IPPROTO_TCP, 0); |
|
2576 ipcse = 0; |
|
2577 } |
|
2578 ipcss = skb_network_offset(skb); |
|
2579 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2580 tucss = skb_transport_offset(skb); |
|
2581 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2582 tucse = 0; |
|
2583 |
|
2584 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2585 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2586 |
|
2587 i = tx_ring->next_to_use; |
|
2588 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2589 buffer_info = &tx_ring->buffer_info[i]; |
|
2590 |
|
2591 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2592 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2593 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2594 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2595 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2596 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2597 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2598 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2599 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2600 |
|
2601 buffer_info->time_stamp = jiffies; |
|
2602 buffer_info->next_to_watch = i; |
|
2603 |
|
2604 if (++i == tx_ring->count) i = 0; |
|
2605 tx_ring->next_to_use = i; |
|
2606 |
|
2607 return true; |
|
2608 } |
|
2609 return false; |
|
2610 } |
|
2611 |
|
2612 static bool e1000_tx_csum(struct e1000_adapter *adapter, |
|
2613 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2614 { |
|
2615 struct e1000_context_desc *context_desc; |
|
2616 struct e1000_buffer *buffer_info; |
|
2617 unsigned int i; |
|
2618 u8 css; |
|
2619 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
2620 |
|
2621 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
2622 return false; |
|
2623 |
|
2624 switch (skb->protocol) { |
|
2625 case cpu_to_be16(ETH_P_IP): |
|
2626 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
2627 cmd_len |= E1000_TXD_CMD_TCP; |
|
2628 break; |
|
2629 case cpu_to_be16(ETH_P_IPV6): |
|
2630 /* XXX not handling all IPV6 headers */ |
|
2631 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
2632 cmd_len |= E1000_TXD_CMD_TCP; |
|
2633 break; |
|
2634 default: |
|
2635 if (unlikely(net_ratelimit())) |
|
2636 DPRINTK(DRV, WARNING, |
|
2637 "checksum_partial proto=%x!\n", skb->protocol); |
|
2638 break; |
|
2639 } |
|
2640 |
|
2641 css = skb_transport_offset(skb); |
|
2642 |
|
2643 i = tx_ring->next_to_use; |
|
2644 buffer_info = &tx_ring->buffer_info[i]; |
|
2645 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2646 |
|
2647 context_desc->lower_setup.ip_config = 0; |
|
2648 context_desc->upper_setup.tcp_fields.tucss = css; |
|
2649 context_desc->upper_setup.tcp_fields.tucso = |
|
2650 css + skb->csum_offset; |
|
2651 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
2652 context_desc->tcp_seg_setup.data = 0; |
|
2653 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
2654 |
|
2655 buffer_info->time_stamp = jiffies; |
|
2656 buffer_info->next_to_watch = i; |
|
2657 |
|
2658 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2659 tx_ring->next_to_use = i; |
|
2660 |
|
2661 return true; |
|
2662 } |
|
2663 |
|
2664 #define E1000_MAX_TXD_PWR 12 |
|
2665 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
2666 |
|
2667 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
2668 struct e1000_tx_ring *tx_ring, |
|
2669 struct sk_buff *skb, unsigned int first, |
|
2670 unsigned int max_per_txd, unsigned int nr_frags, |
|
2671 unsigned int mss) |
|
2672 { |
|
2673 struct e1000_hw *hw = &adapter->hw; |
|
2674 struct e1000_buffer *buffer_info; |
|
2675 unsigned int len = skb_headlen(skb); |
|
2676 unsigned int offset, size, count = 0, i; |
|
2677 unsigned int f; |
|
2678 dma_addr_t *map; |
|
2679 |
|
2680 i = tx_ring->next_to_use; |
|
2681 |
|
2682 if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) { |
|
2683 dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); |
|
2684 return 0; |
|
2685 } |
|
2686 |
|
2687 map = skb_shinfo(skb)->dma_maps; |
|
2688 offset = 0; |
|
2689 |
|
2690 while (len) { |
|
2691 buffer_info = &tx_ring->buffer_info[i]; |
|
2692 size = min(len, max_per_txd); |
|
2693 /* Workaround for Controller erratum -- |
|
2694 * descriptor for non-tso packet in a linear SKB that follows a |
|
2695 * tso gets written back prematurely before the data is fully |
|
2696 * DMA'd to the controller */ |
|
2697 if (!skb->data_len && tx_ring->last_tx_tso && |
|
2698 !skb_is_gso(skb)) { |
|
2699 tx_ring->last_tx_tso = 0; |
|
2700 size -= 4; |
|
2701 } |
|
2702 |
|
2703 /* Workaround for premature desc write-backs |
|
2704 * in TSO mode. Append 4-byte sentinel desc */ |
|
2705 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
2706 size -= 4; |
|
2707 /* work-around for errata 10 and it applies |
|
2708 * to all controllers in PCI-X mode |
|
2709 * The fix is to make sure that the first descriptor of a |
|
2710 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
2711 */ |
|
2712 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
2713 (size > 2015) && count == 0)) |
|
2714 size = 2015; |
|
2715 |
|
2716 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
2717 * terminating buffers within evenly-aligned dwords. */ |
|
2718 if (unlikely(adapter->pcix_82544 && |
|
2719 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
2720 size > 4)) |
|
2721 size -= 4; |
|
2722 |
|
2723 buffer_info->length = size; |
|
2724 /* set time_stamp *before* dma to help avoid a possible race */ |
|
2725 buffer_info->time_stamp = jiffies; |
|
2726 buffer_info->dma = skb_shinfo(skb)->dma_head + offset; |
|
2727 buffer_info->next_to_watch = i; |
|
2728 |
|
2729 len -= size; |
|
2730 offset += size; |
|
2731 count++; |
|
2732 if (len) { |
|
2733 i++; |
|
2734 if (unlikely(i == tx_ring->count)) |
|
2735 i = 0; |
|
2736 } |
|
2737 } |
|
2738 |
|
2739 for (f = 0; f < nr_frags; f++) { |
|
2740 struct skb_frag_struct *frag; |
|
2741 |
|
2742 frag = &skb_shinfo(skb)->frags[f]; |
|
2743 len = frag->size; |
|
2744 offset = 0; |
|
2745 |
|
2746 while (len) { |
|
2747 i++; |
|
2748 if (unlikely(i == tx_ring->count)) |
|
2749 i = 0; |
|
2750 |
|
2751 buffer_info = &tx_ring->buffer_info[i]; |
|
2752 size = min(len, max_per_txd); |
|
2753 /* Workaround for premature desc write-backs |
|
2754 * in TSO mode. Append 4-byte sentinel desc */ |
|
2755 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
2756 size -= 4; |
|
2757 /* Workaround for potential 82544 hang in PCI-X. |
|
2758 * Avoid terminating buffers within evenly-aligned |
|
2759 * dwords. */ |
|
2760 if (unlikely(adapter->pcix_82544 && |
|
2761 !((unsigned long)(page_to_phys(frag->page) + offset |
|
2762 + size - 1) & 4) && |
|
2763 size > 4)) |
|
2764 size -= 4; |
|
2765 |
|
2766 buffer_info->length = size; |
|
2767 buffer_info->time_stamp = jiffies; |
|
2768 buffer_info->dma = map[f] + offset; |
|
2769 buffer_info->next_to_watch = i; |
|
2770 |
|
2771 len -= size; |
|
2772 offset += size; |
|
2773 count++; |
|
2774 } |
|
2775 } |
|
2776 |
|
2777 tx_ring->buffer_info[i].skb = skb; |
|
2778 tx_ring->buffer_info[first].next_to_watch = i; |
|
2779 |
|
2780 return count; |
|
2781 } |
|
2782 |
|
2783 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
2784 struct e1000_tx_ring *tx_ring, int tx_flags, |
|
2785 int count) |
|
2786 { |
|
2787 struct e1000_hw *hw = &adapter->hw; |
|
2788 struct e1000_tx_desc *tx_desc = NULL; |
|
2789 struct e1000_buffer *buffer_info; |
|
2790 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
2791 unsigned int i; |
|
2792 |
|
2793 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
2794 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
2795 E1000_TXD_CMD_TSE; |
|
2796 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2797 |
|
2798 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
2799 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
2800 } |
|
2801 |
|
2802 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
2803 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
2804 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2805 } |
|
2806 |
|
2807 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
2808 txd_lower |= E1000_TXD_CMD_VLE; |
|
2809 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
2810 } |
|
2811 |
|
2812 i = tx_ring->next_to_use; |
|
2813 |
|
2814 while (count--) { |
|
2815 buffer_info = &tx_ring->buffer_info[i]; |
|
2816 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
2817 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
2818 tx_desc->lower.data = |
|
2819 cpu_to_le32(txd_lower | buffer_info->length); |
|
2820 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
2821 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2822 } |
|
2823 |
|
2824 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
2825 |
|
2826 /* Force memory writes to complete before letting h/w |
|
2827 * know there are new descriptors to fetch. (Only |
|
2828 * applicable for weak-ordered memory model archs, |
|
2829 * such as IA-64). */ |
|
2830 wmb(); |
|
2831 |
|
2832 tx_ring->next_to_use = i; |
|
2833 writel(i, hw->hw_addr + tx_ring->tdt); |
|
2834 /* we need this if more than one processor can write to our tail |
|
2835 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
2836 mmiowb(); |
|
2837 } |
|
2838 |
|
2839 /** |
|
2840 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
2841 * The workaround is to avoid queuing a large packet that would span |
|
2842 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
2843 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
2844 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
2845 * to the beginning of the Tx FIFO. |
|
2846 **/ |
|
2847 |
|
2848 #define E1000_FIFO_HDR 0x10 |
|
2849 #define E1000_82547_PAD_LEN 0x3E0 |
|
2850 |
|
2851 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
|
2852 struct sk_buff *skb) |
|
2853 { |
|
2854 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
2855 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
2856 |
|
2857 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
2858 |
|
2859 if (adapter->link_duplex != HALF_DUPLEX) |
|
2860 goto no_fifo_stall_required; |
|
2861 |
|
2862 if (atomic_read(&adapter->tx_fifo_stall)) |
|
2863 return 1; |
|
2864 |
|
2865 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
2866 atomic_set(&adapter->tx_fifo_stall, 1); |
|
2867 return 1; |
|
2868 } |
|
2869 |
|
2870 no_fifo_stall_required: |
|
2871 adapter->tx_fifo_head += skb_fifo_len; |
|
2872 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
2873 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
2874 return 0; |
|
2875 } |
|
2876 |
|
2877 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
2878 { |
|
2879 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2880 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
2881 |
|
2882 netif_stop_queue(netdev); |
|
2883 /* Herbert's original patch had: |
|
2884 * smp_mb__after_netif_stop_queue(); |
|
2885 * but since that doesn't exist yet, just open code it. */ |
|
2886 smp_mb(); |
|
2887 |
|
2888 /* We need to check again in a case another CPU has just |
|
2889 * made room available. */ |
|
2890 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
2891 return -EBUSY; |
|
2892 |
|
2893 /* A reprieve! */ |
|
2894 netif_start_queue(netdev); |
|
2895 ++adapter->restart_queue; |
|
2896 return 0; |
|
2897 } |
|
2898 |
|
2899 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
2900 struct e1000_tx_ring *tx_ring, int size) |
|
2901 { |
|
2902 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
2903 return 0; |
|
2904 return __e1000_maybe_stop_tx(netdev, size); |
|
2905 } |
|
2906 |
|
2907 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
2908 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
2909 struct net_device *netdev) |
|
2910 { |
|
2911 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2912 struct e1000_hw *hw = &adapter->hw; |
|
2913 struct e1000_tx_ring *tx_ring; |
|
2914 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
2915 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
2916 unsigned int tx_flags = 0; |
|
2917 unsigned int len = skb->len - skb->data_len; |
|
2918 unsigned int nr_frags; |
|
2919 unsigned int mss; |
|
2920 int count = 0; |
|
2921 int tso; |
|
2922 unsigned int f; |
|
2923 |
|
2924 /* This goes back to the question of how to logically map a tx queue |
|
2925 * to a flow. Right now, performance is impacted slightly negatively |
|
2926 * if using multiple tx queues. If the stack breaks away from a |
|
2927 * single qdisc implementation, we can look at this again. */ |
|
2928 tx_ring = adapter->tx_ring; |
|
2929 |
|
2930 if (unlikely(skb->len <= 0)) { |
|
2931 dev_kfree_skb_any(skb); |
|
2932 return NETDEV_TX_OK; |
|
2933 } |
|
2934 |
|
2935 mss = skb_shinfo(skb)->gso_size; |
|
2936 /* The controller does a simple calculation to |
|
2937 * make sure there is enough room in the FIFO before |
|
2938 * initiating the DMA for each buffer. The calc is: |
|
2939 * 4 = ceil(buffer len/mss). To make sure we don't |
|
2940 * overrun the FIFO, adjust the max buffer len if mss |
|
2941 * drops. */ |
|
2942 if (mss) { |
|
2943 u8 hdr_len; |
|
2944 max_per_txd = min(mss << 2, max_per_txd); |
|
2945 max_txd_pwr = fls(max_per_txd) - 1; |
|
2946 |
|
2947 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2948 if (skb->data_len && hdr_len == len) { |
|
2949 switch (hw->mac_type) { |
|
2950 unsigned int pull_size; |
|
2951 case e1000_82544: |
|
2952 /* Make sure we have room to chop off 4 bytes, |
|
2953 * and that the end alignment will work out to |
|
2954 * this hardware's requirements |
|
2955 * NOTE: this is a TSO only workaround |
|
2956 * if end byte alignment not correct move us |
|
2957 * into the next dword */ |
|
2958 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
2959 break; |
|
2960 /* fall through */ |
|
2961 pull_size = min((unsigned int)4, skb->data_len); |
|
2962 if (!__pskb_pull_tail(skb, pull_size)) { |
|
2963 DPRINTK(DRV, ERR, |
|
2964 "__pskb_pull_tail failed.\n"); |
|
2965 dev_kfree_skb_any(skb); |
|
2966 return NETDEV_TX_OK; |
|
2967 } |
|
2968 len = skb->len - skb->data_len; |
|
2969 break; |
|
2970 default: |
|
2971 /* do nothing */ |
|
2972 break; |
|
2973 } |
|
2974 } |
|
2975 } |
|
2976 |
|
2977 /* reserve a descriptor for the offload context */ |
|
2978 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
2979 count++; |
|
2980 count++; |
|
2981 |
|
2982 /* Controller Erratum workaround */ |
|
2983 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
2984 count++; |
|
2985 |
|
2986 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
2987 |
|
2988 if (adapter->pcix_82544) |
|
2989 count++; |
|
2990 |
|
2991 /* work-around for errata 10 and it applies to all controllers |
|
2992 * in PCI-X mode, so add one more descriptor to the count |
|
2993 */ |
|
2994 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
2995 (len > 2015))) |
|
2996 count++; |
|
2997 |
|
2998 nr_frags = skb_shinfo(skb)->nr_frags; |
|
2999 for (f = 0; f < nr_frags; f++) |
|
3000 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3001 max_txd_pwr); |
|
3002 if (adapter->pcix_82544) |
|
3003 count += nr_frags; |
|
3004 |
|
3005 /* need: count + 2 desc gap to keep tail from touching |
|
3006 * head, otherwise try next time */ |
|
3007 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
|
3008 return NETDEV_TX_BUSY; |
|
3009 |
|
3010 if (unlikely(hw->mac_type == e1000_82547)) { |
|
3011 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3012 netif_stop_queue(netdev); |
|
3013 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3014 mod_timer(&adapter->tx_fifo_stall_timer, |
|
3015 jiffies + 1); |
|
3016 return NETDEV_TX_BUSY; |
|
3017 } |
|
3018 } |
|
3019 |
|
3020 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
|
3021 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3022 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3023 } |
|
3024 |
|
3025 first = tx_ring->next_to_use; |
|
3026 |
|
3027 tso = e1000_tso(adapter, tx_ring, skb); |
|
3028 if (tso < 0) { |
|
3029 dev_kfree_skb_any(skb); |
|
3030 return NETDEV_TX_OK; |
|
3031 } |
|
3032 |
|
3033 if (likely(tso)) { |
|
3034 if (likely(hw->mac_type != e1000_82544)) |
|
3035 tx_ring->last_tx_tso = 1; |
|
3036 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3037 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3038 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3039 |
|
3040 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3041 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3042 |
|
3043 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
|
3044 nr_frags, mss); |
|
3045 |
|
3046 if (count) { |
|
3047 e1000_tx_queue(adapter, tx_ring, tx_flags, count); |
|
3048 /* Make sure there is space in the ring for the next send. */ |
|
3049 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3050 |
|
3051 } else { |
|
3052 dev_kfree_skb_any(skb); |
|
3053 tx_ring->buffer_info[first].time_stamp = 0; |
|
3054 tx_ring->next_to_use = first; |
|
3055 } |
|
3056 |
|
3057 return NETDEV_TX_OK; |
|
3058 } |
|
3059 |
|
3060 /** |
|
3061 * e1000_tx_timeout - Respond to a Tx Hang |
|
3062 * @netdev: network interface device structure |
|
3063 **/ |
|
3064 |
|
3065 static void e1000_tx_timeout(struct net_device *netdev) |
|
3066 { |
|
3067 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3068 |
|
3069 /* Do the reset outside of interrupt context */ |
|
3070 adapter->tx_timeout_count++; |
|
3071 schedule_work(&adapter->reset_task); |
|
3072 } |
|
3073 |
|
3074 static void e1000_reset_task(struct work_struct *work) |
|
3075 { |
|
3076 struct e1000_adapter *adapter = |
|
3077 container_of(work, struct e1000_adapter, reset_task); |
|
3078 |
|
3079 e1000_reinit_locked(adapter); |
|
3080 } |
|
3081 |
|
3082 /** |
|
3083 * e1000_get_stats - Get System Network Statistics |
|
3084 * @netdev: network interface device structure |
|
3085 * |
|
3086 * Returns the address of the device statistics structure. |
|
3087 * The statistics are actually updated from the timer callback. |
|
3088 **/ |
|
3089 |
|
3090 static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
|
3091 { |
|
3092 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3093 |
|
3094 /* only return the current stats */ |
|
3095 return &adapter->net_stats; |
|
3096 } |
|
3097 |
|
3098 /** |
|
3099 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3100 * @netdev: network interface device structure |
|
3101 * @new_mtu: new value for maximum frame size |
|
3102 * |
|
3103 * Returns 0 on success, negative on failure |
|
3104 **/ |
|
3105 |
|
3106 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3107 { |
|
3108 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3109 struct e1000_hw *hw = &adapter->hw; |
|
3110 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3111 |
|
3112 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3113 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3114 DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); |
|
3115 return -EINVAL; |
|
3116 } |
|
3117 |
|
3118 /* Adapter-specific max frame size limits. */ |
|
3119 switch (hw->mac_type) { |
|
3120 case e1000_undefined ... e1000_82542_rev2_1: |
|
3121 if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
|
3122 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); |
|
3123 return -EINVAL; |
|
3124 } |
|
3125 break; |
|
3126 default: |
|
3127 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3128 break; |
|
3129 } |
|
3130 |
|
3131 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
3132 msleep(1); |
|
3133 /* e1000_down has a dependency on max_frame_size */ |
|
3134 hw->max_frame_size = max_frame; |
|
3135 if (netif_running(netdev)) |
|
3136 e1000_down(adapter); |
|
3137 |
|
3138 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3139 * means we reserve 2 more, this pushes us to allocate from the next |
|
3140 * larger slab size. |
|
3141 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
3142 * however with the new *_jumbo_rx* routines, jumbo receives will use |
|
3143 * fragmented skbs */ |
|
3144 |
|
3145 if (max_frame <= E1000_RXBUFFER_2048) |
|
3146 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3147 else |
|
3148 #if (PAGE_SIZE >= E1000_RXBUFFER_16384) |
|
3149 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3150 #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
|
3151 adapter->rx_buffer_len = PAGE_SIZE; |
|
3152 #endif |
|
3153 |
|
3154 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3155 if (!hw->tbi_compatibility_on && |
|
3156 ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
|
3157 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3158 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3159 |
|
3160 printk(KERN_INFO "e1000: %s changing MTU from %d to %d\n", |
|
3161 netdev->name, netdev->mtu, new_mtu); |
|
3162 netdev->mtu = new_mtu; |
|
3163 |
|
3164 if (netif_running(netdev)) |
|
3165 e1000_up(adapter); |
|
3166 else |
|
3167 e1000_reset(adapter); |
|
3168 |
|
3169 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
3170 |
|
3171 return 0; |
|
3172 } |
|
3173 |
|
3174 /** |
|
3175 * e1000_update_stats - Update the board statistics counters |
|
3176 * @adapter: board private structure |
|
3177 **/ |
|
3178 |
|
3179 void e1000_update_stats(struct e1000_adapter *adapter) |
|
3180 { |
|
3181 struct e1000_hw *hw = &adapter->hw; |
|
3182 struct pci_dev *pdev = adapter->pdev; |
|
3183 unsigned long flags; |
|
3184 u16 phy_tmp; |
|
3185 |
|
3186 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3187 |
|
3188 /* |
|
3189 * Prevent stats update while adapter is being reset, or if the pci |
|
3190 * connection is down. |
|
3191 */ |
|
3192 if (adapter->link_speed == 0) |
|
3193 return; |
|
3194 if (pci_channel_offline(pdev)) |
|
3195 return; |
|
3196 |
|
3197 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3198 |
|
3199 /* these counters are modified from e1000_tbi_adjust_stats, |
|
3200 * called from the interrupt context, so they must only |
|
3201 * be written while holding adapter->stats_lock |
|
3202 */ |
|
3203 |
|
3204 adapter->stats.crcerrs += er32(CRCERRS); |
|
3205 adapter->stats.gprc += er32(GPRC); |
|
3206 adapter->stats.gorcl += er32(GORCL); |
|
3207 adapter->stats.gorch += er32(GORCH); |
|
3208 adapter->stats.bprc += er32(BPRC); |
|
3209 adapter->stats.mprc += er32(MPRC); |
|
3210 adapter->stats.roc += er32(ROC); |
|
3211 |
|
3212 adapter->stats.prc64 += er32(PRC64); |
|
3213 adapter->stats.prc127 += er32(PRC127); |
|
3214 adapter->stats.prc255 += er32(PRC255); |
|
3215 adapter->stats.prc511 += er32(PRC511); |
|
3216 adapter->stats.prc1023 += er32(PRC1023); |
|
3217 adapter->stats.prc1522 += er32(PRC1522); |
|
3218 |
|
3219 adapter->stats.symerrs += er32(SYMERRS); |
|
3220 adapter->stats.mpc += er32(MPC); |
|
3221 adapter->stats.scc += er32(SCC); |
|
3222 adapter->stats.ecol += er32(ECOL); |
|
3223 adapter->stats.mcc += er32(MCC); |
|
3224 adapter->stats.latecol += er32(LATECOL); |
|
3225 adapter->stats.dc += er32(DC); |
|
3226 adapter->stats.sec += er32(SEC); |
|
3227 adapter->stats.rlec += er32(RLEC); |
|
3228 adapter->stats.xonrxc += er32(XONRXC); |
|
3229 adapter->stats.xontxc += er32(XONTXC); |
|
3230 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
3231 adapter->stats.xofftxc += er32(XOFFTXC); |
|
3232 adapter->stats.fcruc += er32(FCRUC); |
|
3233 adapter->stats.gptc += er32(GPTC); |
|
3234 adapter->stats.gotcl += er32(GOTCL); |
|
3235 adapter->stats.gotch += er32(GOTCH); |
|
3236 adapter->stats.rnbc += er32(RNBC); |
|
3237 adapter->stats.ruc += er32(RUC); |
|
3238 adapter->stats.rfc += er32(RFC); |
|
3239 adapter->stats.rjc += er32(RJC); |
|
3240 adapter->stats.torl += er32(TORL); |
|
3241 adapter->stats.torh += er32(TORH); |
|
3242 adapter->stats.totl += er32(TOTL); |
|
3243 adapter->stats.toth += er32(TOTH); |
|
3244 adapter->stats.tpr += er32(TPR); |
|
3245 |
|
3246 adapter->stats.ptc64 += er32(PTC64); |
|
3247 adapter->stats.ptc127 += er32(PTC127); |
|
3248 adapter->stats.ptc255 += er32(PTC255); |
|
3249 adapter->stats.ptc511 += er32(PTC511); |
|
3250 adapter->stats.ptc1023 += er32(PTC1023); |
|
3251 adapter->stats.ptc1522 += er32(PTC1522); |
|
3252 |
|
3253 adapter->stats.mptc += er32(MPTC); |
|
3254 adapter->stats.bptc += er32(BPTC); |
|
3255 |
|
3256 /* used for adaptive IFS */ |
|
3257 |
|
3258 hw->tx_packet_delta = er32(TPT); |
|
3259 adapter->stats.tpt += hw->tx_packet_delta; |
|
3260 hw->collision_delta = er32(COLC); |
|
3261 adapter->stats.colc += hw->collision_delta; |
|
3262 |
|
3263 if (hw->mac_type >= e1000_82543) { |
|
3264 adapter->stats.algnerrc += er32(ALGNERRC); |
|
3265 adapter->stats.rxerrc += er32(RXERRC); |
|
3266 adapter->stats.tncrs += er32(TNCRS); |
|
3267 adapter->stats.cexterr += er32(CEXTERR); |
|
3268 adapter->stats.tsctc += er32(TSCTC); |
|
3269 adapter->stats.tsctfc += er32(TSCTFC); |
|
3270 } |
|
3271 |
|
3272 /* Fill out the OS statistics structure */ |
|
3273 adapter->net_stats.multicast = adapter->stats.mprc; |
|
3274 adapter->net_stats.collisions = adapter->stats.colc; |
|
3275 |
|
3276 /* Rx Errors */ |
|
3277 |
|
3278 /* RLEC on some newer hardware can be incorrect so build |
|
3279 * our own version based on RUC and ROC */ |
|
3280 adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
|
3281 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3282 adapter->stats.ruc + adapter->stats.roc + |
|
3283 adapter->stats.cexterr; |
|
3284 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3285 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; |
|
3286 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3287 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3288 adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
|
3289 |
|
3290 /* Tx Errors */ |
|
3291 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3292 adapter->net_stats.tx_errors = adapter->stats.txerrc; |
|
3293 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
|
3294 adapter->net_stats.tx_window_errors = adapter->stats.latecol; |
|
3295 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3296 if (hw->bad_tx_carr_stats_fd && |
|
3297 adapter->link_duplex == FULL_DUPLEX) { |
|
3298 adapter->net_stats.tx_carrier_errors = 0; |
|
3299 adapter->stats.tncrs = 0; |
|
3300 } |
|
3301 |
|
3302 /* Tx Dropped needs to be maintained elsewhere */ |
|
3303 |
|
3304 /* Phy Stats */ |
|
3305 if (hw->media_type == e1000_media_type_copper) { |
|
3306 if ((adapter->link_speed == SPEED_1000) && |
|
3307 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3308 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3309 adapter->phy_stats.idle_errors += phy_tmp; |
|
3310 } |
|
3311 |
|
3312 if ((hw->mac_type <= e1000_82546) && |
|
3313 (hw->phy_type == e1000_phy_m88) && |
|
3314 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3315 adapter->phy_stats.receive_errors += phy_tmp; |
|
3316 } |
|
3317 |
|
3318 /* Management Stats */ |
|
3319 if (hw->has_smbus) { |
|
3320 adapter->stats.mgptc += er32(MGTPTC); |
|
3321 adapter->stats.mgprc += er32(MGTPRC); |
|
3322 adapter->stats.mgpdc += er32(MGTPDC); |
|
3323 } |
|
3324 |
|
3325 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3326 } |
|
3327 |
|
3328 /** |
|
3329 * e1000_intr - Interrupt Handler |
|
3330 * @irq: interrupt number |
|
3331 * @data: pointer to a network interface device structure |
|
3332 **/ |
|
3333 |
|
3334 static irqreturn_t e1000_intr(int irq, void *data) |
|
3335 { |
|
3336 struct net_device *netdev = data; |
|
3337 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3338 struct e1000_hw *hw = &adapter->hw; |
|
3339 u32 icr = er32(ICR); |
|
3340 |
|
3341 if (unlikely((!icr) || test_bit(__E1000_DOWN, &adapter->flags))) |
|
3342 return IRQ_NONE; /* Not our interrupt */ |
|
3343 |
|
3344 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3345 hw->get_link_status = 1; |
|
3346 /* guard against interrupt when we're going down */ |
|
3347 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3348 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3349 } |
|
3350 |
|
3351 /* disable interrupts, without the synchronize_irq bit */ |
|
3352 ew32(IMC, ~0); |
|
3353 E1000_WRITE_FLUSH(); |
|
3354 |
|
3355 if (likely(napi_schedule_prep(&adapter->napi))) { |
|
3356 adapter->total_tx_bytes = 0; |
|
3357 adapter->total_tx_packets = 0; |
|
3358 adapter->total_rx_bytes = 0; |
|
3359 adapter->total_rx_packets = 0; |
|
3360 __napi_schedule(&adapter->napi); |
|
3361 } else { |
|
3362 /* this really should not happen! if it does it is basically a |
|
3363 * bug, but not a hard error, so enable ints and continue */ |
|
3364 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3365 e1000_irq_enable(adapter); |
|
3366 } |
|
3367 |
|
3368 return IRQ_HANDLED; |
|
3369 } |
|
3370 |
|
3371 /** |
|
3372 * e1000_clean - NAPI Rx polling callback |
|
3373 * @adapter: board private structure |
|
3374 **/ |
|
3375 static int e1000_clean(struct napi_struct *napi, int budget) |
|
3376 { |
|
3377 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
3378 int tx_clean_complete = 0, work_done = 0; |
|
3379 |
|
3380 tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
|
3381 |
|
3382 adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
|
3383 |
|
3384 if (!tx_clean_complete) |
|
3385 work_done = budget; |
|
3386 |
|
3387 /* If budget not fully consumed, exit the polling mode */ |
|
3388 if (work_done < budget) { |
|
3389 if (likely(adapter->itr_setting & 3)) |
|
3390 e1000_set_itr(adapter); |
|
3391 napi_complete(napi); |
|
3392 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3393 e1000_irq_enable(adapter); |
|
3394 } |
|
3395 |
|
3396 return work_done; |
|
3397 } |
|
3398 |
|
3399 /** |
|
3400 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
3401 * @adapter: board private structure |
|
3402 **/ |
|
3403 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
3404 struct e1000_tx_ring *tx_ring) |
|
3405 { |
|
3406 struct e1000_hw *hw = &adapter->hw; |
|
3407 struct net_device *netdev = adapter->netdev; |
|
3408 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
3409 struct e1000_buffer *buffer_info; |
|
3410 unsigned int i, eop; |
|
3411 unsigned int count = 0; |
|
3412 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
3413 |
|
3414 i = tx_ring->next_to_clean; |
|
3415 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3416 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3417 |
|
3418 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
3419 (count < tx_ring->count)) { |
|
3420 bool cleaned = false; |
|
3421 for ( ; !cleaned; count++) { |
|
3422 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3423 buffer_info = &tx_ring->buffer_info[i]; |
|
3424 cleaned = (i == eop); |
|
3425 |
|
3426 if (cleaned) { |
|
3427 struct sk_buff *skb = buffer_info->skb; |
|
3428 unsigned int segs, bytecount; |
|
3429 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
3430 /* multiply data chunks by size of headers */ |
|
3431 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
3432 skb->len; |
|
3433 total_tx_packets += segs; |
|
3434 total_tx_bytes += bytecount; |
|
3435 } |
|
3436 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
3437 tx_desc->upper.data = 0; |
|
3438 |
|
3439 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3440 } |
|
3441 |
|
3442 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3443 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3444 } |
|
3445 |
|
3446 tx_ring->next_to_clean = i; |
|
3447 |
|
3448 #define TX_WAKE_THRESHOLD 32 |
|
3449 if (unlikely(count && netif_carrier_ok(netdev) && |
|
3450 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
3451 /* Make sure that anybody stopping the queue after this |
|
3452 * sees the new next_to_clean. |
|
3453 */ |
|
3454 smp_mb(); |
|
3455 |
|
3456 if (netif_queue_stopped(netdev) && |
|
3457 !(test_bit(__E1000_DOWN, &adapter->flags))) { |
|
3458 netif_wake_queue(netdev); |
|
3459 ++adapter->restart_queue; |
|
3460 } |
|
3461 } |
|
3462 |
|
3463 if (adapter->detect_tx_hung) { |
|
3464 /* Detect a transmit hang in hardware, this serializes the |
|
3465 * check with the clearing of time_stamp and movement of i */ |
|
3466 adapter->detect_tx_hung = false; |
|
3467 if (tx_ring->buffer_info[eop].time_stamp && |
|
3468 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + |
|
3469 (adapter->tx_timeout_factor * HZ)) |
|
3470 && !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
|
3471 |
|
3472 /* detected Tx unit hang */ |
|
3473 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
|
3474 " Tx Queue <%lu>\n" |
|
3475 " TDH <%x>\n" |
|
3476 " TDT <%x>\n" |
|
3477 " next_to_use <%x>\n" |
|
3478 " next_to_clean <%x>\n" |
|
3479 "buffer_info[next_to_clean]\n" |
|
3480 " time_stamp <%lx>\n" |
|
3481 " next_to_watch <%x>\n" |
|
3482 " jiffies <%lx>\n" |
|
3483 " next_to_watch.status <%x>\n", |
|
3484 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
3485 sizeof(struct e1000_tx_ring)), |
|
3486 readl(hw->hw_addr + tx_ring->tdh), |
|
3487 readl(hw->hw_addr + tx_ring->tdt), |
|
3488 tx_ring->next_to_use, |
|
3489 tx_ring->next_to_clean, |
|
3490 tx_ring->buffer_info[eop].time_stamp, |
|
3491 eop, |
|
3492 jiffies, |
|
3493 eop_desc->upper.fields.status); |
|
3494 netif_stop_queue(netdev); |
|
3495 } |
|
3496 } |
|
3497 adapter->total_tx_bytes += total_tx_bytes; |
|
3498 adapter->total_tx_packets += total_tx_packets; |
|
3499 adapter->net_stats.tx_bytes += total_tx_bytes; |
|
3500 adapter->net_stats.tx_packets += total_tx_packets; |
|
3501 return (count < tx_ring->count); |
|
3502 } |
|
3503 |
|
3504 /** |
|
3505 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
3506 * @adapter: board private structure |
|
3507 * @status_err: receive descriptor status and error fields |
|
3508 * @csum: receive descriptor csum field |
|
3509 * @sk_buff: socket buffer with received data |
|
3510 **/ |
|
3511 |
|
3512 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
3513 u32 csum, struct sk_buff *skb) |
|
3514 { |
|
3515 struct e1000_hw *hw = &adapter->hw; |
|
3516 u16 status = (u16)status_err; |
|
3517 u8 errors = (u8)(status_err >> 24); |
|
3518 skb->ip_summed = CHECKSUM_NONE; |
|
3519 |
|
3520 /* 82543 or newer only */ |
|
3521 if (unlikely(hw->mac_type < e1000_82543)) return; |
|
3522 /* Ignore Checksum bit is set */ |
|
3523 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
3524 /* TCP/UDP checksum error bit is set */ |
|
3525 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
3526 /* let the stack verify checksum errors */ |
|
3527 adapter->hw_csum_err++; |
|
3528 return; |
|
3529 } |
|
3530 /* TCP/UDP Checksum has not been calculated */ |
|
3531 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
3532 return; |
|
3533 |
|
3534 /* It must be a TCP or UDP packet with a valid checksum */ |
|
3535 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
3536 /* TCP checksum is good */ |
|
3537 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
3538 } |
|
3539 adapter->hw_csum_good++; |
|
3540 } |
|
3541 |
|
3542 /** |
|
3543 * e1000_consume_page - helper function |
|
3544 **/ |
|
3545 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
3546 u16 length) |
|
3547 { |
|
3548 bi->page = NULL; |
|
3549 skb->len += length; |
|
3550 skb->data_len += length; |
|
3551 skb->truesize += length; |
|
3552 } |
|
3553 |
|
3554 /** |
|
3555 * e1000_receive_skb - helper function to handle rx indications |
|
3556 * @adapter: board private structure |
|
3557 * @status: descriptor status field as written by hardware |
|
3558 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
3559 * @skb: pointer to sk_buff to be indicated to stack |
|
3560 */ |
|
3561 static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, |
|
3562 __le16 vlan, struct sk_buff *skb) |
|
3563 { |
|
3564 if (unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP))) { |
|
3565 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
|
3566 le16_to_cpu(vlan) & |
|
3567 E1000_RXD_SPC_VLAN_MASK); |
|
3568 } else { |
|
3569 netif_receive_skb(skb); |
|
3570 } |
|
3571 } |
|
3572 |
|
3573 /** |
|
3574 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
3575 * @adapter: board private structure |
|
3576 * @rx_ring: ring to clean |
|
3577 * @work_done: amount of napi work completed this call |
|
3578 * @work_to_do: max amount of work allowed for this call to do |
|
3579 * |
|
3580 * the return value indicates whether actual cleaning was done, there |
|
3581 * is no guarantee that everything was cleaned |
|
3582 */ |
|
3583 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
|
3584 struct e1000_rx_ring *rx_ring, |
|
3585 int *work_done, int work_to_do) |
|
3586 { |
|
3587 struct e1000_hw *hw = &adapter->hw; |
|
3588 struct net_device *netdev = adapter->netdev; |
|
3589 struct pci_dev *pdev = adapter->pdev; |
|
3590 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3591 struct e1000_buffer *buffer_info, *next_buffer; |
|
3592 unsigned long irq_flags; |
|
3593 u32 length; |
|
3594 unsigned int i; |
|
3595 int cleaned_count = 0; |
|
3596 bool cleaned = false; |
|
3597 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3598 |
|
3599 i = rx_ring->next_to_clean; |
|
3600 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3601 buffer_info = &rx_ring->buffer_info[i]; |
|
3602 |
|
3603 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3604 struct sk_buff *skb; |
|
3605 u8 status; |
|
3606 |
|
3607 if (*work_done >= work_to_do) |
|
3608 break; |
|
3609 (*work_done)++; |
|
3610 |
|
3611 status = rx_desc->status; |
|
3612 skb = buffer_info->skb; |
|
3613 buffer_info->skb = NULL; |
|
3614 |
|
3615 if (++i == rx_ring->count) i = 0; |
|
3616 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3617 prefetch(next_rxd); |
|
3618 |
|
3619 next_buffer = &rx_ring->buffer_info[i]; |
|
3620 |
|
3621 cleaned = true; |
|
3622 cleaned_count++; |
|
3623 pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, |
|
3624 PCI_DMA_FROMDEVICE); |
|
3625 buffer_info->dma = 0; |
|
3626 |
|
3627 length = le16_to_cpu(rx_desc->length); |
|
3628 |
|
3629 /* errors is only valid for DD + EOP descriptors */ |
|
3630 if (unlikely((status & E1000_RXD_STAT_EOP) && |
|
3631 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { |
|
3632 u8 last_byte = *(skb->data + length - 1); |
|
3633 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
3634 last_byte)) { |
|
3635 spin_lock_irqsave(&adapter->stats_lock, |
|
3636 irq_flags); |
|
3637 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
3638 length, skb->data); |
|
3639 spin_unlock_irqrestore(&adapter->stats_lock, |
|
3640 irq_flags); |
|
3641 length--; |
|
3642 } else { |
|
3643 /* recycle both page and skb */ |
|
3644 buffer_info->skb = skb; |
|
3645 /* an error means any chain goes out the window |
|
3646 * too */ |
|
3647 if (rx_ring->rx_skb_top) |
|
3648 dev_kfree_skb(rx_ring->rx_skb_top); |
|
3649 rx_ring->rx_skb_top = NULL; |
|
3650 goto next_desc; |
|
3651 } |
|
3652 } |
|
3653 |
|
3654 #define rxtop rx_ring->rx_skb_top |
|
3655 if (!(status & E1000_RXD_STAT_EOP)) { |
|
3656 /* this descriptor is only the beginning (or middle) */ |
|
3657 if (!rxtop) { |
|
3658 /* this is the beginning of a chain */ |
|
3659 rxtop = skb; |
|
3660 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
3661 0, length); |
|
3662 } else { |
|
3663 /* this is the middle of a chain */ |
|
3664 skb_fill_page_desc(rxtop, |
|
3665 skb_shinfo(rxtop)->nr_frags, |
|
3666 buffer_info->page, 0, length); |
|
3667 /* re-use the skb, only consumed the page */ |
|
3668 buffer_info->skb = skb; |
|
3669 } |
|
3670 e1000_consume_page(buffer_info, rxtop, length); |
|
3671 goto next_desc; |
|
3672 } else { |
|
3673 if (rxtop) { |
|
3674 /* end of the chain */ |
|
3675 skb_fill_page_desc(rxtop, |
|
3676 skb_shinfo(rxtop)->nr_frags, |
|
3677 buffer_info->page, 0, length); |
|
3678 /* re-use the current skb, we only consumed the |
|
3679 * page */ |
|
3680 buffer_info->skb = skb; |
|
3681 skb = rxtop; |
|
3682 rxtop = NULL; |
|
3683 e1000_consume_page(buffer_info, skb, length); |
|
3684 } else { |
|
3685 /* no chain, got EOP, this buf is the packet |
|
3686 * copybreak to save the put_page/alloc_page */ |
|
3687 if (length <= copybreak && |
|
3688 skb_tailroom(skb) >= length) { |
|
3689 u8 *vaddr; |
|
3690 vaddr = kmap_atomic(buffer_info->page, |
|
3691 KM_SKB_DATA_SOFTIRQ); |
|
3692 memcpy(skb_tail_pointer(skb), vaddr, length); |
|
3693 kunmap_atomic(vaddr, |
|
3694 KM_SKB_DATA_SOFTIRQ); |
|
3695 /* re-use the page, so don't erase |
|
3696 * buffer_info->page */ |
|
3697 skb_put(skb, length); |
|
3698 } else { |
|
3699 skb_fill_page_desc(skb, 0, |
|
3700 buffer_info->page, 0, |
|
3701 length); |
|
3702 e1000_consume_page(buffer_info, skb, |
|
3703 length); |
|
3704 } |
|
3705 } |
|
3706 } |
|
3707 |
|
3708 /* Receive Checksum Offload XXX recompute due to CRC strip? */ |
|
3709 e1000_rx_checksum(adapter, |
|
3710 (u32)(status) | |
|
3711 ((u32)(rx_desc->errors) << 24), |
|
3712 le16_to_cpu(rx_desc->csum), skb); |
|
3713 |
|
3714 pskb_trim(skb, skb->len - 4); |
|
3715 |
|
3716 /* probably a little skewed due to removing CRC */ |
|
3717 total_rx_bytes += skb->len; |
|
3718 total_rx_packets++; |
|
3719 |
|
3720 /* eth type trans needs skb->data to point to something */ |
|
3721 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
3722 DPRINTK(DRV, ERR, "pskb_may_pull failed.\n"); |
|
3723 dev_kfree_skb(skb); |
|
3724 goto next_desc; |
|
3725 } |
|
3726 |
|
3727 skb->protocol = eth_type_trans(skb, netdev); |
|
3728 |
|
3729 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
3730 |
|
3731 next_desc: |
|
3732 rx_desc->status = 0; |
|
3733 |
|
3734 /* return some buffers to hardware, one at a time is too slow */ |
|
3735 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
3736 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3737 cleaned_count = 0; |
|
3738 } |
|
3739 |
|
3740 /* use prefetched values */ |
|
3741 rx_desc = next_rxd; |
|
3742 buffer_info = next_buffer; |
|
3743 } |
|
3744 rx_ring->next_to_clean = i; |
|
3745 |
|
3746 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
3747 if (cleaned_count) |
|
3748 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3749 |
|
3750 adapter->total_rx_packets += total_rx_packets; |
|
3751 adapter->total_rx_bytes += total_rx_bytes; |
|
3752 adapter->net_stats.rx_bytes += total_rx_bytes; |
|
3753 adapter->net_stats.rx_packets += total_rx_packets; |
|
3754 return cleaned; |
|
3755 } |
|
3756 |
|
3757 /** |
|
3758 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
3759 * @adapter: board private structure |
|
3760 * @rx_ring: ring to clean |
|
3761 * @work_done: amount of napi work completed this call |
|
3762 * @work_to_do: max amount of work allowed for this call to do |
|
3763 */ |
|
3764 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
3765 struct e1000_rx_ring *rx_ring, |
|
3766 int *work_done, int work_to_do) |
|
3767 { |
|
3768 struct e1000_hw *hw = &adapter->hw; |
|
3769 struct net_device *netdev = adapter->netdev; |
|
3770 struct pci_dev *pdev = adapter->pdev; |
|
3771 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3772 struct e1000_buffer *buffer_info, *next_buffer; |
|
3773 unsigned long flags; |
|
3774 u32 length; |
|
3775 unsigned int i; |
|
3776 int cleaned_count = 0; |
|
3777 bool cleaned = false; |
|
3778 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3779 |
|
3780 i = rx_ring->next_to_clean; |
|
3781 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3782 buffer_info = &rx_ring->buffer_info[i]; |
|
3783 |
|
3784 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3785 struct sk_buff *skb; |
|
3786 u8 status; |
|
3787 |
|
3788 if (*work_done >= work_to_do) |
|
3789 break; |
|
3790 (*work_done)++; |
|
3791 |
|
3792 status = rx_desc->status; |
|
3793 skb = buffer_info->skb; |
|
3794 buffer_info->skb = NULL; |
|
3795 |
|
3796 prefetch(skb->data - NET_IP_ALIGN); |
|
3797 |
|
3798 if (++i == rx_ring->count) i = 0; |
|
3799 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3800 prefetch(next_rxd); |
|
3801 |
|
3802 next_buffer = &rx_ring->buffer_info[i]; |
|
3803 |
|
3804 cleaned = true; |
|
3805 cleaned_count++; |
|
3806 pci_unmap_single(pdev, buffer_info->dma, buffer_info->length, |
|
3807 PCI_DMA_FROMDEVICE); |
|
3808 buffer_info->dma = 0; |
|
3809 |
|
3810 length = le16_to_cpu(rx_desc->length); |
|
3811 /* !EOP means multiple descriptors were used to store a single |
|
3812 * packet, if thats the case we need to toss it. In fact, we |
|
3813 * to toss every packet with the EOP bit clear and the next |
|
3814 * frame that _does_ have the EOP bit set, as it is by |
|
3815 * definition only a frame fragment |
|
3816 */ |
|
3817 if (unlikely(!(status & E1000_RXD_STAT_EOP))) |
|
3818 adapter->discarding = true; |
|
3819 |
|
3820 if (adapter->discarding) { |
|
3821 /* All receives must fit into a single buffer */ |
|
3822 E1000_DBG("%s: Receive packet consumed multiple" |
|
3823 " buffers\n", netdev->name); |
|
3824 /* recycle */ |
|
3825 buffer_info->skb = skb; |
|
3826 if (status & E1000_RXD_STAT_EOP) |
|
3827 adapter->discarding = false; |
|
3828 goto next_desc; |
|
3829 } |
|
3830 |
|
3831 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
3832 u8 last_byte = *(skb->data + length - 1); |
|
3833 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
3834 last_byte)) { |
|
3835 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3836 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
3837 length, skb->data); |
|
3838 spin_unlock_irqrestore(&adapter->stats_lock, |
|
3839 flags); |
|
3840 length--; |
|
3841 } else { |
|
3842 /* recycle */ |
|
3843 buffer_info->skb = skb; |
|
3844 goto next_desc; |
|
3845 } |
|
3846 } |
|
3847 |
|
3848 /* adjust length to remove Ethernet CRC, this must be |
|
3849 * done after the TBI_ACCEPT workaround above */ |
|
3850 length -= 4; |
|
3851 |
|
3852 /* probably a little skewed due to removing CRC */ |
|
3853 total_rx_bytes += length; |
|
3854 total_rx_packets++; |
|
3855 |
|
3856 /* code added for copybreak, this should improve |
|
3857 * performance for small packets with large amounts |
|
3858 * of reassembly being done in the stack */ |
|
3859 if (length < copybreak) { |
|
3860 struct sk_buff *new_skb = |
|
3861 netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
|
3862 if (new_skb) { |
|
3863 skb_reserve(new_skb, NET_IP_ALIGN); |
|
3864 skb_copy_to_linear_data_offset(new_skb, |
|
3865 -NET_IP_ALIGN, |
|
3866 (skb->data - |
|
3867 NET_IP_ALIGN), |
|
3868 (length + |
|
3869 NET_IP_ALIGN)); |
|
3870 /* save the skb in buffer_info as good */ |
|
3871 buffer_info->skb = skb; |
|
3872 skb = new_skb; |
|
3873 } |
|
3874 /* else just continue with the old one */ |
|
3875 } |
|
3876 /* end copybreak code */ |
|
3877 skb_put(skb, length); |
|
3878 |
|
3879 /* Receive Checksum Offload */ |
|
3880 e1000_rx_checksum(adapter, |
|
3881 (u32)(status) | |
|
3882 ((u32)(rx_desc->errors) << 24), |
|
3883 le16_to_cpu(rx_desc->csum), skb); |
|
3884 |
|
3885 skb->protocol = eth_type_trans(skb, netdev); |
|
3886 |
|
3887 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
3888 |
|
3889 next_desc: |
|
3890 rx_desc->status = 0; |
|
3891 |
|
3892 /* return some buffers to hardware, one at a time is too slow */ |
|
3893 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
3894 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3895 cleaned_count = 0; |
|
3896 } |
|
3897 |
|
3898 /* use prefetched values */ |
|
3899 rx_desc = next_rxd; |
|
3900 buffer_info = next_buffer; |
|
3901 } |
|
3902 rx_ring->next_to_clean = i; |
|
3903 |
|
3904 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
3905 if (cleaned_count) |
|
3906 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3907 |
|
3908 adapter->total_rx_packets += total_rx_packets; |
|
3909 adapter->total_rx_bytes += total_rx_bytes; |
|
3910 adapter->net_stats.rx_bytes += total_rx_bytes; |
|
3911 adapter->net_stats.rx_packets += total_rx_packets; |
|
3912 return cleaned; |
|
3913 } |
|
3914 |
|
3915 /** |
|
3916 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
3917 * @adapter: address of board private structure |
|
3918 * @rx_ring: pointer to receive ring structure |
|
3919 * @cleaned_count: number of buffers to allocate this pass |
|
3920 **/ |
|
3921 |
|
3922 static void |
|
3923 e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
|
3924 struct e1000_rx_ring *rx_ring, int cleaned_count) |
|
3925 { |
|
3926 struct net_device *netdev = adapter->netdev; |
|
3927 struct pci_dev *pdev = adapter->pdev; |
|
3928 struct e1000_rx_desc *rx_desc; |
|
3929 struct e1000_buffer *buffer_info; |
|
3930 struct sk_buff *skb; |
|
3931 unsigned int i; |
|
3932 unsigned int bufsz = 256 - |
|
3933 16 /*for skb_reserve */ - |
|
3934 NET_IP_ALIGN; |
|
3935 |
|
3936 i = rx_ring->next_to_use; |
|
3937 buffer_info = &rx_ring->buffer_info[i]; |
|
3938 |
|
3939 while (cleaned_count--) { |
|
3940 skb = buffer_info->skb; |
|
3941 if (skb) { |
|
3942 skb_trim(skb, 0); |
|
3943 goto check_page; |
|
3944 } |
|
3945 |
|
3946 skb = netdev_alloc_skb(netdev, bufsz); |
|
3947 if (unlikely(!skb)) { |
|
3948 /* Better luck next round */ |
|
3949 adapter->alloc_rx_buff_failed++; |
|
3950 break; |
|
3951 } |
|
3952 |
|
3953 /* Fix for errata 23, can't cross 64kB boundary */ |
|
3954 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
3955 struct sk_buff *oldskb = skb; |
|
3956 DPRINTK(PROBE, ERR, "skb align check failed: %u bytes " |
|
3957 "at %p\n", bufsz, skb->data); |
|
3958 /* Try again, without freeing the previous */ |
|
3959 skb = netdev_alloc_skb(netdev, bufsz); |
|
3960 /* Failed allocation, critical failure */ |
|
3961 if (!skb) { |
|
3962 dev_kfree_skb(oldskb); |
|
3963 adapter->alloc_rx_buff_failed++; |
|
3964 break; |
|
3965 } |
|
3966 |
|
3967 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
3968 /* give up */ |
|
3969 dev_kfree_skb(skb); |
|
3970 dev_kfree_skb(oldskb); |
|
3971 break; /* while (cleaned_count--) */ |
|
3972 } |
|
3973 |
|
3974 /* Use new allocation */ |
|
3975 dev_kfree_skb(oldskb); |
|
3976 } |
|
3977 /* Make buffer alignment 2 beyond a 16 byte boundary |
|
3978 * this will result in a 16 byte aligned IP header after |
|
3979 * the 14 byte MAC header is removed |
|
3980 */ |
|
3981 skb_reserve(skb, NET_IP_ALIGN); |
|
3982 |
|
3983 buffer_info->skb = skb; |
|
3984 buffer_info->length = adapter->rx_buffer_len; |
|
3985 check_page: |
|
3986 /* allocate a new page if necessary */ |
|
3987 if (!buffer_info->page) { |
|
3988 buffer_info->page = alloc_page(GFP_ATOMIC); |
|
3989 if (unlikely(!buffer_info->page)) { |
|
3990 adapter->alloc_rx_buff_failed++; |
|
3991 break; |
|
3992 } |
|
3993 } |
|
3994 |
|
3995 if (!buffer_info->dma) |
|
3996 buffer_info->dma = pci_map_page(pdev, |
|
3997 buffer_info->page, 0, |
|
3998 buffer_info->length, |
|
3999 PCI_DMA_FROMDEVICE); |
|
4000 |
|
4001 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4002 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4003 |
|
4004 if (unlikely(++i == rx_ring->count)) |
|
4005 i = 0; |
|
4006 buffer_info = &rx_ring->buffer_info[i]; |
|
4007 } |
|
4008 |
|
4009 if (likely(rx_ring->next_to_use != i)) { |
|
4010 rx_ring->next_to_use = i; |
|
4011 if (unlikely(i-- == 0)) |
|
4012 i = (rx_ring->count - 1); |
|
4013 |
|
4014 /* Force memory writes to complete before letting h/w |
|
4015 * know there are new descriptors to fetch. (Only |
|
4016 * applicable for weak-ordered memory model archs, |
|
4017 * such as IA-64). */ |
|
4018 wmb(); |
|
4019 writel(i, adapter->hw.hw_addr + rx_ring->rdt); |
|
4020 } |
|
4021 } |
|
4022 |
|
4023 /** |
|
4024 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4025 * @adapter: address of board private structure |
|
4026 **/ |
|
4027 |
|
4028 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4029 struct e1000_rx_ring *rx_ring, |
|
4030 int cleaned_count) |
|
4031 { |
|
4032 struct e1000_hw *hw = &adapter->hw; |
|
4033 struct net_device *netdev = adapter->netdev; |
|
4034 struct pci_dev *pdev = adapter->pdev; |
|
4035 struct e1000_rx_desc *rx_desc; |
|
4036 struct e1000_buffer *buffer_info; |
|
4037 struct sk_buff *skb; |
|
4038 unsigned int i; |
|
4039 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; |
|
4040 |
|
4041 i = rx_ring->next_to_use; |
|
4042 buffer_info = &rx_ring->buffer_info[i]; |
|
4043 |
|
4044 while (cleaned_count--) { |
|
4045 skb = buffer_info->skb; |
|
4046 if (skb) { |
|
4047 skb_trim(skb, 0); |
|
4048 goto map_skb; |
|
4049 } |
|
4050 |
|
4051 skb = netdev_alloc_skb(netdev, bufsz); |
|
4052 if (unlikely(!skb)) { |
|
4053 /* Better luck next round */ |
|
4054 adapter->alloc_rx_buff_failed++; |
|
4055 break; |
|
4056 } |
|
4057 |
|
4058 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4059 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4060 struct sk_buff *oldskb = skb; |
|
4061 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
|
4062 "at %p\n", bufsz, skb->data); |
|
4063 /* Try again, without freeing the previous */ |
|
4064 skb = netdev_alloc_skb(netdev, bufsz); |
|
4065 /* Failed allocation, critical failure */ |
|
4066 if (!skb) { |
|
4067 dev_kfree_skb(oldskb); |
|
4068 adapter->alloc_rx_buff_failed++; |
|
4069 break; |
|
4070 } |
|
4071 |
|
4072 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4073 /* give up */ |
|
4074 dev_kfree_skb(skb); |
|
4075 dev_kfree_skb(oldskb); |
|
4076 adapter->alloc_rx_buff_failed++; |
|
4077 break; /* while !buffer_info->skb */ |
|
4078 } |
|
4079 |
|
4080 /* Use new allocation */ |
|
4081 dev_kfree_skb(oldskb); |
|
4082 } |
|
4083 /* Make buffer alignment 2 beyond a 16 byte boundary |
|
4084 * this will result in a 16 byte aligned IP header after |
|
4085 * the 14 byte MAC header is removed |
|
4086 */ |
|
4087 skb_reserve(skb, NET_IP_ALIGN); |
|
4088 |
|
4089 buffer_info->skb = skb; |
|
4090 buffer_info->length = adapter->rx_buffer_len; |
|
4091 map_skb: |
|
4092 buffer_info->dma = pci_map_single(pdev, |
|
4093 skb->data, |
|
4094 buffer_info->length, |
|
4095 PCI_DMA_FROMDEVICE); |
|
4096 |
|
4097 /* |
|
4098 * XXX if it was allocated cleanly it will never map to a |
|
4099 * boundary crossing |
|
4100 */ |
|
4101 |
|
4102 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4103 if (!e1000_check_64k_bound(adapter, |
|
4104 (void *)(unsigned long)buffer_info->dma, |
|
4105 adapter->rx_buffer_len)) { |
|
4106 DPRINTK(RX_ERR, ERR, |
|
4107 "dma align check failed: %u bytes at %p\n", |
|
4108 adapter->rx_buffer_len, |
|
4109 (void *)(unsigned long)buffer_info->dma); |
|
4110 dev_kfree_skb(skb); |
|
4111 buffer_info->skb = NULL; |
|
4112 |
|
4113 pci_unmap_single(pdev, buffer_info->dma, |
|
4114 adapter->rx_buffer_len, |
|
4115 PCI_DMA_FROMDEVICE); |
|
4116 buffer_info->dma = 0; |
|
4117 |
|
4118 adapter->alloc_rx_buff_failed++; |
|
4119 break; /* while !buffer_info->skb */ |
|
4120 } |
|
4121 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4122 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4123 |
|
4124 if (unlikely(++i == rx_ring->count)) |
|
4125 i = 0; |
|
4126 buffer_info = &rx_ring->buffer_info[i]; |
|
4127 } |
|
4128 |
|
4129 if (likely(rx_ring->next_to_use != i)) { |
|
4130 rx_ring->next_to_use = i; |
|
4131 if (unlikely(i-- == 0)) |
|
4132 i = (rx_ring->count - 1); |
|
4133 |
|
4134 /* Force memory writes to complete before letting h/w |
|
4135 * know there are new descriptors to fetch. (Only |
|
4136 * applicable for weak-ordered memory model archs, |
|
4137 * such as IA-64). */ |
|
4138 wmb(); |
|
4139 writel(i, hw->hw_addr + rx_ring->rdt); |
|
4140 } |
|
4141 } |
|
4142 |
|
4143 /** |
|
4144 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4145 * @adapter: |
|
4146 **/ |
|
4147 |
|
4148 static void e1000_smartspeed(struct e1000_adapter *adapter) |
|
4149 { |
|
4150 struct e1000_hw *hw = &adapter->hw; |
|
4151 u16 phy_status; |
|
4152 u16 phy_ctrl; |
|
4153 |
|
4154 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
|
4155 !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4156 return; |
|
4157 |
|
4158 if (adapter->smartspeed == 0) { |
|
4159 /* If Master/Slave config fault is asserted twice, |
|
4160 * we assume back-to-back */ |
|
4161 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4162 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4163 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4164 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4165 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4166 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4167 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4168 e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
|
4169 phy_ctrl); |
|
4170 adapter->smartspeed++; |
|
4171 if (!e1000_phy_setup_autoneg(hw) && |
|
4172 !e1000_read_phy_reg(hw, PHY_CTRL, |
|
4173 &phy_ctrl)) { |
|
4174 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4175 MII_CR_RESTART_AUTO_NEG); |
|
4176 e1000_write_phy_reg(hw, PHY_CTRL, |
|
4177 phy_ctrl); |
|
4178 } |
|
4179 } |
|
4180 return; |
|
4181 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4182 /* If still no link, perhaps using 2/3 pair cable */ |
|
4183 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4184 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4185 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
|
4186 if (!e1000_phy_setup_autoneg(hw) && |
|
4187 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { |
|
4188 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4189 MII_CR_RESTART_AUTO_NEG); |
|
4190 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
|
4191 } |
|
4192 } |
|
4193 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4194 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4195 adapter->smartspeed = 0; |
|
4196 } |
|
4197 |
|
4198 /** |
|
4199 * e1000_ioctl - |
|
4200 * @netdev: |
|
4201 * @ifreq: |
|
4202 * @cmd: |
|
4203 **/ |
|
4204 |
|
4205 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4206 { |
|
4207 switch (cmd) { |
|
4208 case SIOCGMIIPHY: |
|
4209 case SIOCGMIIREG: |
|
4210 case SIOCSMIIREG: |
|
4211 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4212 default: |
|
4213 return -EOPNOTSUPP; |
|
4214 } |
|
4215 } |
|
4216 |
|
4217 /** |
|
4218 * e1000_mii_ioctl - |
|
4219 * @netdev: |
|
4220 * @ifreq: |
|
4221 * @cmd: |
|
4222 **/ |
|
4223 |
|
4224 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
4225 int cmd) |
|
4226 { |
|
4227 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4228 struct e1000_hw *hw = &adapter->hw; |
|
4229 struct mii_ioctl_data *data = if_mii(ifr); |
|
4230 int retval; |
|
4231 u16 mii_reg; |
|
4232 u16 spddplx; |
|
4233 unsigned long flags; |
|
4234 |
|
4235 if (hw->media_type != e1000_media_type_copper) |
|
4236 return -EOPNOTSUPP; |
|
4237 |
|
4238 switch (cmd) { |
|
4239 case SIOCGMIIPHY: |
|
4240 data->phy_id = hw->phy_addr; |
|
4241 break; |
|
4242 case SIOCGMIIREG: |
|
4243 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4244 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
|
4245 &data->val_out)) { |
|
4246 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4247 return -EIO; |
|
4248 } |
|
4249 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4250 break; |
|
4251 case SIOCSMIIREG: |
|
4252 if (data->reg_num & ~(0x1F)) |
|
4253 return -EFAULT; |
|
4254 mii_reg = data->val_in; |
|
4255 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4256 if (e1000_write_phy_reg(hw, data->reg_num, |
|
4257 mii_reg)) { |
|
4258 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4259 return -EIO; |
|
4260 } |
|
4261 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4262 if (hw->media_type == e1000_media_type_copper) { |
|
4263 switch (data->reg_num) { |
|
4264 case PHY_CTRL: |
|
4265 if (mii_reg & MII_CR_POWER_DOWN) |
|
4266 break; |
|
4267 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4268 hw->autoneg = 1; |
|
4269 hw->autoneg_advertised = 0x2F; |
|
4270 } else { |
|
4271 if (mii_reg & 0x40) |
|
4272 spddplx = SPEED_1000; |
|
4273 else if (mii_reg & 0x2000) |
|
4274 spddplx = SPEED_100; |
|
4275 else |
|
4276 spddplx = SPEED_10; |
|
4277 spddplx += (mii_reg & 0x100) |
|
4278 ? DUPLEX_FULL : |
|
4279 DUPLEX_HALF; |
|
4280 retval = e1000_set_spd_dplx(adapter, |
|
4281 spddplx); |
|
4282 if (retval) |
|
4283 return retval; |
|
4284 } |
|
4285 if (netif_running(adapter->netdev)) |
|
4286 e1000_reinit_locked(adapter); |
|
4287 else |
|
4288 e1000_reset(adapter); |
|
4289 break; |
|
4290 case M88E1000_PHY_SPEC_CTRL: |
|
4291 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4292 if (e1000_phy_reset(hw)) |
|
4293 return -EIO; |
|
4294 break; |
|
4295 } |
|
4296 } else { |
|
4297 switch (data->reg_num) { |
|
4298 case PHY_CTRL: |
|
4299 if (mii_reg & MII_CR_POWER_DOWN) |
|
4300 break; |
|
4301 if (netif_running(adapter->netdev)) |
|
4302 e1000_reinit_locked(adapter); |
|
4303 else |
|
4304 e1000_reset(adapter); |
|
4305 break; |
|
4306 } |
|
4307 } |
|
4308 break; |
|
4309 default: |
|
4310 return -EOPNOTSUPP; |
|
4311 } |
|
4312 return E1000_SUCCESS; |
|
4313 } |
|
4314 |
|
4315 void e1000_pci_set_mwi(struct e1000_hw *hw) |
|
4316 { |
|
4317 struct e1000_adapter *adapter = hw->back; |
|
4318 int ret_val = pci_set_mwi(adapter->pdev); |
|
4319 |
|
4320 if (ret_val) |
|
4321 DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
|
4322 } |
|
4323 |
|
4324 void e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
4325 { |
|
4326 struct e1000_adapter *adapter = hw->back; |
|
4327 |
|
4328 pci_clear_mwi(adapter->pdev); |
|
4329 } |
|
4330 |
|
4331 int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
|
4332 { |
|
4333 struct e1000_adapter *adapter = hw->back; |
|
4334 return pcix_get_mmrbc(adapter->pdev); |
|
4335 } |
|
4336 |
|
4337 void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
|
4338 { |
|
4339 struct e1000_adapter *adapter = hw->back; |
|
4340 pcix_set_mmrbc(adapter->pdev, mmrbc); |
|
4341 } |
|
4342 |
|
4343 void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
|
4344 { |
|
4345 outl(value, port); |
|
4346 } |
|
4347 |
|
4348 static void e1000_vlan_rx_register(struct net_device *netdev, |
|
4349 struct vlan_group *grp) |
|
4350 { |
|
4351 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4352 struct e1000_hw *hw = &adapter->hw; |
|
4353 u32 ctrl, rctl; |
|
4354 |
|
4355 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4356 e1000_irq_disable(adapter); |
|
4357 adapter->vlgrp = grp; |
|
4358 |
|
4359 if (grp) { |
|
4360 /* enable VLAN tag insert/strip */ |
|
4361 ctrl = er32(CTRL); |
|
4362 ctrl |= E1000_CTRL_VME; |
|
4363 ew32(CTRL, ctrl); |
|
4364 |
|
4365 /* enable VLAN receive filtering */ |
|
4366 rctl = er32(RCTL); |
|
4367 rctl &= ~E1000_RCTL_CFIEN; |
|
4368 if (!(netdev->flags & IFF_PROMISC)) |
|
4369 rctl |= E1000_RCTL_VFE; |
|
4370 ew32(RCTL, rctl); |
|
4371 e1000_update_mng_vlan(adapter); |
|
4372 } else { |
|
4373 /* disable VLAN tag insert/strip */ |
|
4374 ctrl = er32(CTRL); |
|
4375 ctrl &= ~E1000_CTRL_VME; |
|
4376 ew32(CTRL, ctrl); |
|
4377 |
|
4378 /* disable VLAN receive filtering */ |
|
4379 rctl = er32(RCTL); |
|
4380 rctl &= ~E1000_RCTL_VFE; |
|
4381 ew32(RCTL, rctl); |
|
4382 |
|
4383 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
4384 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4385 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4386 } |
|
4387 } |
|
4388 |
|
4389 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4390 e1000_irq_enable(adapter); |
|
4391 } |
|
4392 |
|
4393 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
4394 { |
|
4395 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4396 struct e1000_hw *hw = &adapter->hw; |
|
4397 u32 vfta, index; |
|
4398 |
|
4399 if ((hw->mng_cookie.status & |
|
4400 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4401 (vid == adapter->mng_vlan_id)) |
|
4402 return; |
|
4403 /* add VID to filter table */ |
|
4404 index = (vid >> 5) & 0x7F; |
|
4405 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4406 vfta |= (1 << (vid & 0x1F)); |
|
4407 e1000_write_vfta(hw, index, vfta); |
|
4408 } |
|
4409 |
|
4410 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
4411 { |
|
4412 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4413 struct e1000_hw *hw = &adapter->hw; |
|
4414 u32 vfta, index; |
|
4415 |
|
4416 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4417 e1000_irq_disable(adapter); |
|
4418 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
4419 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4420 e1000_irq_enable(adapter); |
|
4421 |
|
4422 /* remove VID from filter table */ |
|
4423 index = (vid >> 5) & 0x7F; |
|
4424 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4425 vfta &= ~(1 << (vid & 0x1F)); |
|
4426 e1000_write_vfta(hw, index, vfta); |
|
4427 } |
|
4428 |
|
4429 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
4430 { |
|
4431 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
4432 |
|
4433 if (adapter->vlgrp) { |
|
4434 u16 vid; |
|
4435 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
|
4436 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
4437 continue; |
|
4438 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
4439 } |
|
4440 } |
|
4441 } |
|
4442 |
|
4443 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
|
4444 { |
|
4445 struct e1000_hw *hw = &adapter->hw; |
|
4446 |
|
4447 hw->autoneg = 0; |
|
4448 |
|
4449 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
4450 if ((hw->media_type == e1000_media_type_fiber) && |
|
4451 spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
|
4452 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
4453 return -EINVAL; |
|
4454 } |
|
4455 |
|
4456 switch (spddplx) { |
|
4457 case SPEED_10 + DUPLEX_HALF: |
|
4458 hw->forced_speed_duplex = e1000_10_half; |
|
4459 break; |
|
4460 case SPEED_10 + DUPLEX_FULL: |
|
4461 hw->forced_speed_duplex = e1000_10_full; |
|
4462 break; |
|
4463 case SPEED_100 + DUPLEX_HALF: |
|
4464 hw->forced_speed_duplex = e1000_100_half; |
|
4465 break; |
|
4466 case SPEED_100 + DUPLEX_FULL: |
|
4467 hw->forced_speed_duplex = e1000_100_full; |
|
4468 break; |
|
4469 case SPEED_1000 + DUPLEX_FULL: |
|
4470 hw->autoneg = 1; |
|
4471 hw->autoneg_advertised = ADVERTISE_1000_FULL; |
|
4472 break; |
|
4473 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
4474 default: |
|
4475 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
4476 return -EINVAL; |
|
4477 } |
|
4478 return 0; |
|
4479 } |
|
4480 |
|
4481 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
|
4482 { |
|
4483 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4484 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4485 struct e1000_hw *hw = &adapter->hw; |
|
4486 u32 ctrl, ctrl_ext, rctl, status; |
|
4487 u32 wufc = adapter->wol; |
|
4488 #ifdef CONFIG_PM |
|
4489 int retval = 0; |
|
4490 #endif |
|
4491 |
|
4492 netif_device_detach(netdev); |
|
4493 |
|
4494 if (netif_running(netdev)) { |
|
4495 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
4496 e1000_down(adapter); |
|
4497 } |
|
4498 |
|
4499 #ifdef CONFIG_PM |
|
4500 retval = pci_save_state(pdev); |
|
4501 if (retval) |
|
4502 return retval; |
|
4503 #endif |
|
4504 |
|
4505 status = er32(STATUS); |
|
4506 if (status & E1000_STATUS_LU) |
|
4507 wufc &= ~E1000_WUFC_LNKC; |
|
4508 |
|
4509 if (wufc) { |
|
4510 e1000_setup_rctl(adapter); |
|
4511 e1000_set_rx_mode(netdev); |
|
4512 |
|
4513 /* turn on all-multi mode if wake on multicast is enabled */ |
|
4514 if (wufc & E1000_WUFC_MC) { |
|
4515 rctl = er32(RCTL); |
|
4516 rctl |= E1000_RCTL_MPE; |
|
4517 ew32(RCTL, rctl); |
|
4518 } |
|
4519 |
|
4520 if (hw->mac_type >= e1000_82540) { |
|
4521 ctrl = er32(CTRL); |
|
4522 /* advertise wake from D3Cold */ |
|
4523 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
4524 /* phy power management enable */ |
|
4525 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
4526 ctrl |= E1000_CTRL_ADVD3WUC | |
|
4527 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
4528 ew32(CTRL, ctrl); |
|
4529 } |
|
4530 |
|
4531 if (hw->media_type == e1000_media_type_fiber || |
|
4532 hw->media_type == e1000_media_type_internal_serdes) { |
|
4533 /* keep the laser running in D3 */ |
|
4534 ctrl_ext = er32(CTRL_EXT); |
|
4535 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
4536 ew32(CTRL_EXT, ctrl_ext); |
|
4537 } |
|
4538 |
|
4539 ew32(WUC, E1000_WUC_PME_EN); |
|
4540 ew32(WUFC, wufc); |
|
4541 } else { |
|
4542 ew32(WUC, 0); |
|
4543 ew32(WUFC, 0); |
|
4544 } |
|
4545 |
|
4546 e1000_release_manageability(adapter); |
|
4547 |
|
4548 *enable_wake = !!wufc; |
|
4549 |
|
4550 /* make sure adapter isn't asleep if manageability is enabled */ |
|
4551 if (adapter->en_mng_pt) |
|
4552 *enable_wake = true; |
|
4553 |
|
4554 if (netif_running(netdev)) |
|
4555 e1000_free_irq(adapter); |
|
4556 |
|
4557 pci_disable_device(pdev); |
|
4558 |
|
4559 return 0; |
|
4560 } |
|
4561 |
|
4562 #ifdef CONFIG_PM |
|
4563 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
4564 { |
|
4565 int retval; |
|
4566 bool wake; |
|
4567 |
|
4568 retval = __e1000_shutdown(pdev, &wake); |
|
4569 if (retval) |
|
4570 return retval; |
|
4571 |
|
4572 if (wake) { |
|
4573 pci_prepare_to_sleep(pdev); |
|
4574 } else { |
|
4575 pci_wake_from_d3(pdev, false); |
|
4576 pci_set_power_state(pdev, PCI_D3hot); |
|
4577 } |
|
4578 |
|
4579 return 0; |
|
4580 } |
|
4581 |
|
4582 static int e1000_resume(struct pci_dev *pdev) |
|
4583 { |
|
4584 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4585 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4586 struct e1000_hw *hw = &adapter->hw; |
|
4587 u32 err; |
|
4588 |
|
4589 pci_set_power_state(pdev, PCI_D0); |
|
4590 pci_restore_state(pdev); |
|
4591 |
|
4592 if (adapter->need_ioport) |
|
4593 err = pci_enable_device(pdev); |
|
4594 else |
|
4595 err = pci_enable_device_mem(pdev); |
|
4596 if (err) { |
|
4597 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); |
|
4598 return err; |
|
4599 } |
|
4600 pci_set_master(pdev); |
|
4601 |
|
4602 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4603 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4604 |
|
4605 if (netif_running(netdev)) { |
|
4606 err = e1000_request_irq(adapter); |
|
4607 if (err) |
|
4608 return err; |
|
4609 } |
|
4610 |
|
4611 e1000_power_up_phy(adapter); |
|
4612 e1000_reset(adapter); |
|
4613 ew32(WUS, ~0); |
|
4614 |
|
4615 e1000_init_manageability(adapter); |
|
4616 |
|
4617 if (netif_running(netdev)) |
|
4618 e1000_up(adapter); |
|
4619 |
|
4620 netif_device_attach(netdev); |
|
4621 |
|
4622 return 0; |
|
4623 } |
|
4624 #endif |
|
4625 |
|
4626 static void e1000_shutdown(struct pci_dev *pdev) |
|
4627 { |
|
4628 bool wake; |
|
4629 |
|
4630 __e1000_shutdown(pdev, &wake); |
|
4631 |
|
4632 if (system_state == SYSTEM_POWER_OFF) { |
|
4633 pci_wake_from_d3(pdev, wake); |
|
4634 pci_set_power_state(pdev, PCI_D3hot); |
|
4635 } |
|
4636 } |
|
4637 |
|
4638 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
4639 /* |
|
4640 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
4641 * without having to re-enable interrupts. It's not called while |
|
4642 * the interrupt routine is executing. |
|
4643 */ |
|
4644 static void e1000_netpoll(struct net_device *netdev) |
|
4645 { |
|
4646 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4647 |
|
4648 disable_irq(adapter->pdev->irq); |
|
4649 e1000_intr(adapter->pdev->irq, netdev); |
|
4650 enable_irq(adapter->pdev->irq); |
|
4651 } |
|
4652 #endif |
|
4653 |
|
4654 /** |
|
4655 * e1000_io_error_detected - called when PCI error is detected |
|
4656 * @pdev: Pointer to PCI device |
|
4657 * @state: The current pci connection state |
|
4658 * |
|
4659 * This function is called after a PCI bus error affecting |
|
4660 * this device has been detected. |
|
4661 */ |
|
4662 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
4663 pci_channel_state_t state) |
|
4664 { |
|
4665 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4666 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4667 |
|
4668 netif_device_detach(netdev); |
|
4669 |
|
4670 if (state == pci_channel_io_perm_failure) |
|
4671 return PCI_ERS_RESULT_DISCONNECT; |
|
4672 |
|
4673 if (netif_running(netdev)) |
|
4674 e1000_down(adapter); |
|
4675 pci_disable_device(pdev); |
|
4676 |
|
4677 /* Request a slot slot reset. */ |
|
4678 return PCI_ERS_RESULT_NEED_RESET; |
|
4679 } |
|
4680 |
|
4681 /** |
|
4682 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
4683 * @pdev: Pointer to PCI device |
|
4684 * |
|
4685 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
4686 * resembles the first-half of the e1000_resume routine. |
|
4687 */ |
|
4688 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
4689 { |
|
4690 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4691 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4692 struct e1000_hw *hw = &adapter->hw; |
|
4693 int err; |
|
4694 |
|
4695 if (adapter->need_ioport) |
|
4696 err = pci_enable_device(pdev); |
|
4697 else |
|
4698 err = pci_enable_device_mem(pdev); |
|
4699 if (err) { |
|
4700 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); |
|
4701 return PCI_ERS_RESULT_DISCONNECT; |
|
4702 } |
|
4703 pci_set_master(pdev); |
|
4704 |
|
4705 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4706 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4707 |
|
4708 e1000_reset(adapter); |
|
4709 ew32(WUS, ~0); |
|
4710 |
|
4711 return PCI_ERS_RESULT_RECOVERED; |
|
4712 } |
|
4713 |
|
4714 /** |
|
4715 * e1000_io_resume - called when traffic can start flowing again. |
|
4716 * @pdev: Pointer to PCI device |
|
4717 * |
|
4718 * This callback is called when the error recovery driver tells us that |
|
4719 * its OK to resume normal operation. Implementation resembles the |
|
4720 * second-half of the e1000_resume routine. |
|
4721 */ |
|
4722 static void e1000_io_resume(struct pci_dev *pdev) |
|
4723 { |
|
4724 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4725 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4726 |
|
4727 e1000_init_manageability(adapter); |
|
4728 |
|
4729 if (netif_running(netdev)) { |
|
4730 if (e1000_up(adapter)) { |
|
4731 printk("e1000: can't bring device back up after reset\n"); |
|
4732 return; |
|
4733 } |
|
4734 } |
|
4735 |
|
4736 netif_device_attach(netdev); |
|
4737 } |
|
4738 |
|
4739 /* e1000_main.c */ |