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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2006 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 vim: noexpandtab |
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28 |
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29 *******************************************************************************/ |
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30 |
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31 #include "e1000-2.6.31-ethercat.h" |
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32 #include <net/ip6_checksum.h> |
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33 |
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34 char e1000_driver_name[] = "ec_e1000"; |
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35 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
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36 #define DRV_VERSION "7.3.21-k3-NAPI" |
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37 const char e1000_driver_version[] = DRV_VERSION; |
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38 static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
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39 |
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40 /* e1000_pci_tbl - PCI Device ID Table |
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41 * |
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42 * Last entry must be all 0s |
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43 * |
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44 * Macro expands to... |
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45 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} |
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46 */ |
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47 static struct pci_device_id e1000_pci_tbl[] = { |
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48 INTEL_E1000_ETHERNET_DEVICE(0x1000), |
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49 INTEL_E1000_ETHERNET_DEVICE(0x1001), |
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50 INTEL_E1000_ETHERNET_DEVICE(0x1004), |
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51 INTEL_E1000_ETHERNET_DEVICE(0x1008), |
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52 INTEL_E1000_ETHERNET_DEVICE(0x1009), |
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53 INTEL_E1000_ETHERNET_DEVICE(0x100C), |
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54 INTEL_E1000_ETHERNET_DEVICE(0x100D), |
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55 INTEL_E1000_ETHERNET_DEVICE(0x100E), |
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56 INTEL_E1000_ETHERNET_DEVICE(0x100F), |
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57 INTEL_E1000_ETHERNET_DEVICE(0x1010), |
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58 INTEL_E1000_ETHERNET_DEVICE(0x1011), |
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59 INTEL_E1000_ETHERNET_DEVICE(0x1012), |
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60 INTEL_E1000_ETHERNET_DEVICE(0x1013), |
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61 INTEL_E1000_ETHERNET_DEVICE(0x1014), |
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62 INTEL_E1000_ETHERNET_DEVICE(0x1015), |
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63 INTEL_E1000_ETHERNET_DEVICE(0x1016), |
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64 INTEL_E1000_ETHERNET_DEVICE(0x1017), |
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65 INTEL_E1000_ETHERNET_DEVICE(0x1018), |
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66 INTEL_E1000_ETHERNET_DEVICE(0x1019), |
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67 INTEL_E1000_ETHERNET_DEVICE(0x101A), |
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68 INTEL_E1000_ETHERNET_DEVICE(0x101D), |
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69 INTEL_E1000_ETHERNET_DEVICE(0x101E), |
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70 INTEL_E1000_ETHERNET_DEVICE(0x1026), |
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71 INTEL_E1000_ETHERNET_DEVICE(0x1027), |
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72 INTEL_E1000_ETHERNET_DEVICE(0x1028), |
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73 INTEL_E1000_ETHERNET_DEVICE(0x1075), |
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74 INTEL_E1000_ETHERNET_DEVICE(0x1076), |
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75 INTEL_E1000_ETHERNET_DEVICE(0x1077), |
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76 INTEL_E1000_ETHERNET_DEVICE(0x1078), |
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77 INTEL_E1000_ETHERNET_DEVICE(0x1079), |
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78 INTEL_E1000_ETHERNET_DEVICE(0x107A), |
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79 INTEL_E1000_ETHERNET_DEVICE(0x107B), |
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80 INTEL_E1000_ETHERNET_DEVICE(0x107C), |
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81 INTEL_E1000_ETHERNET_DEVICE(0x108A), |
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82 INTEL_E1000_ETHERNET_DEVICE(0x1099), |
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83 INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
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84 /* required last entry */ |
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85 {0,} |
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86 }; |
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87 |
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88 // do not auto-load driver |
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89 // MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
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90 |
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91 int e1000_up(struct e1000_adapter *adapter); |
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92 void e1000_down(struct e1000_adapter *adapter); |
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93 void e1000_reinit_locked(struct e1000_adapter *adapter); |
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94 void e1000_reset(struct e1000_adapter *adapter); |
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95 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx); |
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96 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
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97 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); |
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98 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); |
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99 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); |
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100 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
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101 struct e1000_tx_ring *txdr); |
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102 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
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103 struct e1000_rx_ring *rxdr); |
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104 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
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105 struct e1000_tx_ring *tx_ring); |
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106 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
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107 struct e1000_rx_ring *rx_ring); |
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108 void e1000_update_stats(struct e1000_adapter *adapter); |
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109 |
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110 static int e1000_init_module(void); |
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111 static void e1000_exit_module(void); |
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112 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
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113 static void __devexit e1000_remove(struct pci_dev *pdev); |
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114 static int e1000_alloc_queues(struct e1000_adapter *adapter); |
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115 static int e1000_sw_init(struct e1000_adapter *adapter); |
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116 static int e1000_open(struct net_device *netdev); |
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117 static int e1000_close(struct net_device *netdev); |
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118 static void e1000_configure_tx(struct e1000_adapter *adapter); |
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119 static void e1000_configure_rx(struct e1000_adapter *adapter); |
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120 static void e1000_setup_rctl(struct e1000_adapter *adapter); |
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121 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
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122 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); |
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123 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
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124 struct e1000_tx_ring *tx_ring); |
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125 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
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126 struct e1000_rx_ring *rx_ring); |
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127 static void e1000_set_rx_mode(struct net_device *netdev); |
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128 static void e1000_update_phy_info(unsigned long data); |
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129 static void e1000_watchdog(unsigned long data); |
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130 static void e1000_82547_tx_fifo_stall(unsigned long data); |
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131 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); |
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132 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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133 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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134 static int e1000_set_mac(struct net_device *netdev, void *p); |
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135 void ec_poll(struct net_device *); |
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136 static irqreturn_t e1000_intr(int irq, void *data); |
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137 static irqreturn_t e1000_intr_msi(int irq, void *data); |
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138 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
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139 struct e1000_tx_ring *tx_ring); |
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140 static int e1000_clean(struct napi_struct *napi, int budget); |
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141 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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142 struct e1000_rx_ring *rx_ring, |
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143 int *work_done, int work_to_do); |
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144 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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145 struct e1000_rx_ring *rx_ring, |
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146 int cleaned_count); |
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147 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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148 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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149 int cmd); |
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150 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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151 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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152 static void e1000_tx_timeout(struct net_device *dev); |
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153 static void e1000_reset_task(struct work_struct *work); |
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154 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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155 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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156 struct sk_buff *skb); |
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157 |
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158 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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159 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
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160 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); |
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161 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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162 |
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163 #ifdef CONFIG_PM |
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164 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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165 static int e1000_resume(struct pci_dev *pdev); |
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166 #endif |
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167 static void e1000_shutdown(struct pci_dev *pdev); |
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168 |
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169 #ifdef CONFIG_NET_POLL_CONTROLLER |
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170 /* for netdump / net console */ |
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171 static void e1000_netpoll (struct net_device *netdev); |
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172 #endif |
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173 |
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174 #define COPYBREAK_DEFAULT 256 |
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175 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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176 module_param(copybreak, uint, 0644); |
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177 MODULE_PARM_DESC(copybreak, |
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178 "Maximum size of packet that is copied to a new buffer on receive"); |
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179 |
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180 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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181 pci_channel_state_t state); |
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182 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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183 static void e1000_io_resume(struct pci_dev *pdev); |
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184 |
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185 static struct pci_error_handlers e1000_err_handler = { |
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186 .error_detected = e1000_io_error_detected, |
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187 .slot_reset = e1000_io_slot_reset, |
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188 .resume = e1000_io_resume, |
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189 }; |
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190 |
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191 static struct pci_driver e1000_driver = { |
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192 .name = e1000_driver_name, |
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193 .id_table = e1000_pci_tbl, |
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194 .probe = e1000_probe, |
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195 .remove = __devexit_p(e1000_remove), |
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196 #ifdef CONFIG_PM |
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197 /* Power Managment Hooks */ |
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198 .suspend = e1000_suspend, |
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199 .resume = e1000_resume, |
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200 #endif |
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201 .shutdown = e1000_shutdown, |
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202 .err_handler = &e1000_err_handler |
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203 }; |
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204 |
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205 MODULE_AUTHOR("Florian Pose <fp@igh-essen.com>"); |
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206 MODULE_DESCRIPTION("EtherCAT-capable Intel(R) PRO/1000 Network Driver"); |
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207 MODULE_LICENSE("GPL"); |
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208 MODULE_VERSION(DRV_VERSION); |
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209 |
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210 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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211 module_param(debug, int, 0); |
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212 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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213 |
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214 /** |
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215 * e1000_init_module - Driver Registration Routine |
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216 * |
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217 * e1000_init_module is the first routine called when the driver is |
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218 * loaded. All it does is register with the PCI subsystem. |
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219 **/ |
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220 |
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221 static int __init e1000_init_module(void) |
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222 { |
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223 int ret; |
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224 printk(KERN_INFO "%s - version %s\n", |
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225 e1000_driver_string, e1000_driver_version); |
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226 |
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227 printk(KERN_INFO "%s\n", e1000_copyright); |
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228 |
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229 ret = pci_register_driver(&e1000_driver); |
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230 if (copybreak != COPYBREAK_DEFAULT) { |
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231 if (copybreak == 0) |
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232 printk(KERN_INFO "e1000: copybreak disabled\n"); |
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233 else |
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234 printk(KERN_INFO "e1000: copybreak enabled for " |
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235 "packets <= %u bytes\n", copybreak); |
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236 } |
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237 return ret; |
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238 } |
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239 |
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240 module_init(e1000_init_module); |
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241 |
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242 /** |
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243 * e1000_exit_module - Driver Exit Cleanup Routine |
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244 * |
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245 * e1000_exit_module is called just before the driver is removed |
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246 * from memory. |
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247 **/ |
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248 |
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249 static void __exit e1000_exit_module(void) |
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250 { |
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251 pci_unregister_driver(&e1000_driver); |
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252 } |
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253 |
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254 module_exit(e1000_exit_module); |
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255 |
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256 static int e1000_request_irq(struct e1000_adapter *adapter) |
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257 { |
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258 struct e1000_hw *hw = &adapter->hw; |
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259 struct net_device *netdev = adapter->netdev; |
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260 irq_handler_t handler = e1000_intr; |
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261 int irq_flags = IRQF_SHARED; |
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262 int err; |
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263 |
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264 if (adapter->ecdev) |
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265 return 0; |
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266 |
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267 if (hw->mac_type >= e1000_82571) { |
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268 adapter->have_msi = !pci_enable_msi(adapter->pdev); |
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269 if (adapter->have_msi) { |
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270 handler = e1000_intr_msi; |
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271 irq_flags = 0; |
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272 } |
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273 } |
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274 |
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275 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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276 netdev); |
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277 if (err) { |
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278 if (adapter->have_msi) |
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279 pci_disable_msi(adapter->pdev); |
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280 DPRINTK(PROBE, ERR, |
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281 "Unable to allocate interrupt Error: %d\n", err); |
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282 } |
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283 |
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284 return err; |
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285 } |
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286 |
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287 static void e1000_free_irq(struct e1000_adapter *adapter) |
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288 { |
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289 struct net_device *netdev = adapter->netdev; |
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290 |
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291 if (adapter->ecdev) |
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292 return; |
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293 |
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294 free_irq(adapter->pdev->irq, netdev); |
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295 |
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296 if (adapter->have_msi) |
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297 pci_disable_msi(adapter->pdev); |
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298 } |
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299 |
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300 /** |
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301 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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302 * @adapter: board private structure |
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303 **/ |
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304 |
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305 static void e1000_irq_disable(struct e1000_adapter *adapter) |
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306 { |
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307 struct e1000_hw *hw = &adapter->hw; |
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308 |
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309 if (adapter->ecdev) |
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310 return; |
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311 |
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312 ew32(IMC, ~0); |
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313 E1000_WRITE_FLUSH(); |
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314 synchronize_irq(adapter->pdev->irq); |
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315 } |
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316 |
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317 /** |
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318 * e1000_irq_enable - Enable default interrupt generation settings |
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319 * @adapter: board private structure |
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320 **/ |
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321 |
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322 static void e1000_irq_enable(struct e1000_adapter *adapter) |
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323 { |
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324 struct e1000_hw *hw = &adapter->hw; |
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325 |
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326 if (adapter->ecdev) |
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327 return; |
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328 |
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329 ew32(IMS, IMS_ENABLE_MASK); |
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330 E1000_WRITE_FLUSH(); |
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331 } |
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332 |
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333 static void e1000_update_mng_vlan(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 struct net_device *netdev = adapter->netdev; |
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337 u16 vid = hw->mng_cookie.vlan_id; |
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338 u16 old_vid = adapter->mng_vlan_id; |
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339 if (adapter->vlgrp) { |
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340 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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341 if (hw->mng_cookie.status & |
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342 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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343 e1000_vlan_rx_add_vid(netdev, vid); |
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344 adapter->mng_vlan_id = vid; |
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345 } else |
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346 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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347 |
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348 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
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349 (vid != old_vid) && |
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350 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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351 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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352 } else |
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353 adapter->mng_vlan_id = vid; |
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354 } |
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355 } |
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356 |
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357 /** |
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358 * e1000_release_hw_control - release control of the h/w to f/w |
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359 * @adapter: address of board private structure |
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360 * |
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361 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
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362 * For ASF and Pass Through versions of f/w this means that the |
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363 * driver is no longer loaded. For AMT version (only with 82573) i |
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364 * of the f/w this means that the network i/f is closed. |
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365 * |
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366 **/ |
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367 |
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368 static void e1000_release_hw_control(struct e1000_adapter *adapter) |
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369 { |
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370 u32 ctrl_ext; |
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371 u32 swsm; |
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372 struct e1000_hw *hw = &adapter->hw; |
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373 |
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374 /* Let firmware taken over control of h/w */ |
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375 switch (hw->mac_type) { |
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376 case e1000_82573: |
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377 swsm = er32(SWSM); |
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378 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); |
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379 break; |
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380 case e1000_82571: |
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381 case e1000_82572: |
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382 case e1000_80003es2lan: |
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383 case e1000_ich8lan: |
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384 ctrl_ext = er32(CTRL_EXT); |
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385 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
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386 break; |
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387 default: |
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388 break; |
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389 } |
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390 } |
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391 |
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392 /** |
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393 * e1000_get_hw_control - get control of the h/w from f/w |
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394 * @adapter: address of board private structure |
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395 * |
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396 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
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397 * For ASF and Pass Through versions of f/w this means that |
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398 * the driver is loaded. For AMT version (only with 82573) |
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399 * of the f/w this means that the network i/f is open. |
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400 * |
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401 **/ |
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402 |
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403 static void e1000_get_hw_control(struct e1000_adapter *adapter) |
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404 { |
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405 u32 ctrl_ext; |
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406 u32 swsm; |
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407 struct e1000_hw *hw = &adapter->hw; |
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408 |
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409 /* Let firmware know the driver has taken over */ |
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410 switch (hw->mac_type) { |
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411 case e1000_82573: |
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412 swsm = er32(SWSM); |
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413 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); |
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414 break; |
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415 case e1000_82571: |
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416 case e1000_82572: |
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417 case e1000_80003es2lan: |
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418 case e1000_ich8lan: |
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419 ctrl_ext = er32(CTRL_EXT); |
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420 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
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421 break; |
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422 default: |
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423 break; |
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424 } |
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425 } |
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426 |
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427 static void e1000_init_manageability(struct e1000_adapter *adapter) |
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428 { |
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429 struct e1000_hw *hw = &adapter->hw; |
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430 |
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431 if (adapter->en_mng_pt) { |
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432 u32 manc = er32(MANC); |
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433 |
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434 /* disable hardware interception of ARP */ |
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435 manc &= ~(E1000_MANC_ARP_EN); |
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436 |
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437 /* enable receiving management packets to the host */ |
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438 /* this will probably generate destination unreachable messages |
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439 * from the host OS, but the packets will be handled on SMBUS */ |
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440 if (hw->has_manc2h) { |
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441 u32 manc2h = er32(MANC2H); |
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442 |
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443 manc |= E1000_MANC_EN_MNG2HOST; |
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444 #define E1000_MNG2HOST_PORT_623 (1 << 5) |
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445 #define E1000_MNG2HOST_PORT_664 (1 << 6) |
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446 manc2h |= E1000_MNG2HOST_PORT_623; |
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447 manc2h |= E1000_MNG2HOST_PORT_664; |
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448 ew32(MANC2H, manc2h); |
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449 } |
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450 |
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451 ew32(MANC, manc); |
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452 } |
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453 } |
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454 |
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455 static void e1000_release_manageability(struct e1000_adapter *adapter) |
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456 { |
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457 struct e1000_hw *hw = &adapter->hw; |
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458 |
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459 if (adapter->en_mng_pt) { |
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460 u32 manc = er32(MANC); |
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461 |
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462 /* re-enable hardware interception of ARP */ |
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463 manc |= E1000_MANC_ARP_EN; |
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464 |
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465 if (hw->has_manc2h) |
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466 manc &= ~E1000_MANC_EN_MNG2HOST; |
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467 |
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468 /* don't explicitly have to mess with MANC2H since |
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469 * MANC has an enable disable that gates MANC2H */ |
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470 |
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471 ew32(MANC, manc); |
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472 } |
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473 } |
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474 |
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475 /** |
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476 * e1000_configure - configure the hardware for RX and TX |
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477 * @adapter = private board structure |
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478 **/ |
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479 static void e1000_configure(struct e1000_adapter *adapter) |
|
480 { |
|
481 struct net_device *netdev = adapter->netdev; |
|
482 int i; |
|
483 |
|
484 e1000_set_rx_mode(netdev); |
|
485 |
|
486 e1000_restore_vlan(adapter); |
|
487 e1000_init_manageability(adapter); |
|
488 |
|
489 e1000_configure_tx(adapter); |
|
490 e1000_setup_rctl(adapter); |
|
491 e1000_configure_rx(adapter); |
|
492 /* call E1000_DESC_UNUSED which always leaves |
|
493 * at least 1 descriptor unused to make sure |
|
494 * next_to_use != next_to_clean */ |
|
495 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
496 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
|
497 if (adapter->ecdev) { |
|
498 /* fill rx ring completely! */ |
|
499 adapter->alloc_rx_buf(adapter, ring, ring->count); |
|
500 } else { |
|
501 /* this one leaves the last ring element unallocated! */ |
|
502 adapter->alloc_rx_buf(adapter, ring, |
|
503 E1000_DESC_UNUSED(ring)); |
|
504 } |
|
505 } |
|
506 |
|
507 adapter->tx_queue_len = netdev->tx_queue_len; |
|
508 } |
|
509 |
|
510 int e1000_up(struct e1000_adapter *adapter) |
|
511 { |
|
512 struct e1000_hw *hw = &adapter->hw; |
|
513 |
|
514 /* hardware has been reset, we need to reload some things */ |
|
515 e1000_configure(adapter); |
|
516 |
|
517 clear_bit(__E1000_DOWN, &adapter->flags); |
|
518 |
|
519 if (!adapter->ecdev) { |
|
520 napi_enable(&adapter->napi); |
|
521 |
|
522 e1000_irq_enable(adapter); |
|
523 |
|
524 netif_wake_queue(adapter->netdev); |
|
525 |
|
526 /* fire a link change interrupt to start the watchdog */ |
|
527 ew32(ICS, E1000_ICS_LSC); |
|
528 } |
|
529 return 0; |
|
530 } |
|
531 |
|
532 /** |
|
533 * e1000_power_up_phy - restore link in case the phy was powered down |
|
534 * @adapter: address of board private structure |
|
535 * |
|
536 * The phy may be powered down to save power and turn off link when the |
|
537 * driver is unloaded and wake on lan is not enabled (among others) |
|
538 * *** this routine MUST be followed by a call to e1000_reset *** |
|
539 * |
|
540 **/ |
|
541 |
|
542 void e1000_power_up_phy(struct e1000_adapter *adapter) |
|
543 { |
|
544 struct e1000_hw *hw = &adapter->hw; |
|
545 u16 mii_reg = 0; |
|
546 |
|
547 /* Just clear the power down bit to wake the phy back up */ |
|
548 if (hw->media_type == e1000_media_type_copper) { |
|
549 /* according to the manual, the phy will retain its |
|
550 * settings across a power-down/up cycle */ |
|
551 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
|
552 mii_reg &= ~MII_CR_POWER_DOWN; |
|
553 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
|
554 } |
|
555 } |
|
556 |
|
557 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
|
558 { |
|
559 struct e1000_hw *hw = &adapter->hw; |
|
560 |
|
561 /* Power down the PHY so no link is implied when interface is down * |
|
562 * The PHY cannot be powered down if any of the following is true * |
|
563 * (a) WoL is enabled |
|
564 * (b) AMT is active |
|
565 * (c) SoL/IDER session is active */ |
|
566 if (!adapter->wol && hw->mac_type >= e1000_82540 && |
|
567 hw->media_type == e1000_media_type_copper) { |
|
568 u16 mii_reg = 0; |
|
569 |
|
570 switch (hw->mac_type) { |
|
571 case e1000_82540: |
|
572 case e1000_82545: |
|
573 case e1000_82545_rev_3: |
|
574 case e1000_82546: |
|
575 case e1000_82546_rev_3: |
|
576 case e1000_82541: |
|
577 case e1000_82541_rev_2: |
|
578 case e1000_82547: |
|
579 case e1000_82547_rev_2: |
|
580 if (er32(MANC) & E1000_MANC_SMBUS_EN) |
|
581 goto out; |
|
582 break; |
|
583 case e1000_82571: |
|
584 case e1000_82572: |
|
585 case e1000_82573: |
|
586 case e1000_80003es2lan: |
|
587 case e1000_ich8lan: |
|
588 if (e1000_check_mng_mode(hw) || |
|
589 e1000_check_phy_reset_block(hw)) |
|
590 goto out; |
|
591 break; |
|
592 default: |
|
593 goto out; |
|
594 } |
|
595 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
|
596 mii_reg |= MII_CR_POWER_DOWN; |
|
597 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
|
598 mdelay(1); |
|
599 } |
|
600 out: |
|
601 return; |
|
602 } |
|
603 |
|
604 void e1000_down(struct e1000_adapter *adapter) |
|
605 { |
|
606 struct e1000_hw *hw = &adapter->hw; |
|
607 struct net_device *netdev = adapter->netdev; |
|
608 u32 rctl, tctl; |
|
609 |
|
610 /* signal that we're down so the interrupt handler does not |
|
611 * reschedule our watchdog timer */ |
|
612 set_bit(__E1000_DOWN, &adapter->flags); |
|
613 |
|
614 /* disable receives in the hardware */ |
|
615 rctl = er32(RCTL); |
|
616 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
617 |
|
618 if (!adapter->ecdev) { |
|
619 /* flush and sleep below */ |
|
620 /* can be netif_tx_disable when NETIF_F_LLTX is removed */ |
|
621 netif_stop_queue(netdev); |
|
622 } |
|
623 |
|
624 /* disable transmits in the hardware */ |
|
625 tctl = er32(TCTL); |
|
626 tctl &= ~E1000_TCTL_EN; |
|
627 ew32(TCTL, tctl); |
|
628 /* flush both disables and wait for them to finish */ |
|
629 E1000_WRITE_FLUSH(); |
|
630 msleep(10); |
|
631 |
|
632 if (!adapter->ecdev) { |
|
633 napi_disable(&adapter->napi); |
|
634 |
|
635 e1000_irq_disable(adapter); |
|
636 |
|
637 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
638 del_timer_sync(&adapter->watchdog_timer); |
|
639 del_timer_sync(&adapter->phy_info_timer); |
|
640 } |
|
641 |
|
642 netdev->tx_queue_len = adapter->tx_queue_len; |
|
643 adapter->link_speed = 0; |
|
644 adapter->link_duplex = 0; |
|
645 if (!adapter->ecdev) { |
|
646 netif_carrier_off(netdev); |
|
647 } |
|
648 |
|
649 e1000_reset(adapter); |
|
650 e1000_clean_all_tx_rings(adapter); |
|
651 e1000_clean_all_rx_rings(adapter); |
|
652 } |
|
653 |
|
654 void e1000_reinit_locked(struct e1000_adapter *adapter) |
|
655 { |
|
656 WARN_ON(in_interrupt()); |
|
657 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
658 msleep(1); |
|
659 e1000_down(adapter); |
|
660 e1000_up(adapter); |
|
661 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
662 } |
|
663 |
|
664 void e1000_reset(struct e1000_adapter *adapter) |
|
665 { |
|
666 struct e1000_hw *hw = &adapter->hw; |
|
667 u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
|
668 u16 fc_high_water_mark = E1000_FC_HIGH_DIFF; |
|
669 bool legacy_pba_adjust = false; |
|
670 |
|
671 /* Repartition Pba for greater than 9k mtu |
|
672 * To take effect CTRL.RST is required. |
|
673 */ |
|
674 |
|
675 switch (hw->mac_type) { |
|
676 case e1000_82542_rev2_0: |
|
677 case e1000_82542_rev2_1: |
|
678 case e1000_82543: |
|
679 case e1000_82544: |
|
680 case e1000_82540: |
|
681 case e1000_82541: |
|
682 case e1000_82541_rev_2: |
|
683 legacy_pba_adjust = true; |
|
684 pba = E1000_PBA_48K; |
|
685 break; |
|
686 case e1000_82545: |
|
687 case e1000_82545_rev_3: |
|
688 case e1000_82546: |
|
689 case e1000_82546_rev_3: |
|
690 pba = E1000_PBA_48K; |
|
691 break; |
|
692 case e1000_82547: |
|
693 case e1000_82547_rev_2: |
|
694 legacy_pba_adjust = true; |
|
695 pba = E1000_PBA_30K; |
|
696 break; |
|
697 case e1000_82571: |
|
698 case e1000_82572: |
|
699 case e1000_80003es2lan: |
|
700 pba = E1000_PBA_38K; |
|
701 break; |
|
702 case e1000_82573: |
|
703 pba = E1000_PBA_20K; |
|
704 break; |
|
705 case e1000_ich8lan: |
|
706 pba = E1000_PBA_8K; |
|
707 case e1000_undefined: |
|
708 case e1000_num_macs: |
|
709 break; |
|
710 } |
|
711 |
|
712 if (legacy_pba_adjust) { |
|
713 if (adapter->netdev->mtu > E1000_RXBUFFER_8192) |
|
714 pba -= 8; /* allocate more FIFO for Tx */ |
|
715 |
|
716 if (hw->mac_type == e1000_82547) { |
|
717 adapter->tx_fifo_head = 0; |
|
718 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
719 adapter->tx_fifo_size = |
|
720 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
721 atomic_set(&adapter->tx_fifo_stall, 0); |
|
722 } |
|
723 } else if (hw->max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
724 /* adjust PBA for jumbo frames */ |
|
725 ew32(PBA, pba); |
|
726 |
|
727 /* To maintain wire speed transmits, the Tx FIFO should be |
|
728 * large enough to accomodate two full transmit packets, |
|
729 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
730 * the Rx FIFO should be large enough to accomodate at least |
|
731 * one full receive packet and is similarly rounded up and |
|
732 * expressed in KB. */ |
|
733 pba = er32(PBA); |
|
734 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
735 tx_space = pba >> 16; |
|
736 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
737 pba &= 0xffff; |
|
738 /* don't include ethernet FCS because hardware appends/strips */ |
|
739 min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE + |
|
740 VLAN_TAG_SIZE; |
|
741 min_tx_space = min_rx_space; |
|
742 min_tx_space *= 2; |
|
743 min_tx_space = ALIGN(min_tx_space, 1024); |
|
744 min_tx_space >>= 10; |
|
745 min_rx_space = ALIGN(min_rx_space, 1024); |
|
746 min_rx_space >>= 10; |
|
747 |
|
748 /* If current Tx allocation is less than the min Tx FIFO size, |
|
749 * and the min Tx FIFO size is less than the current Rx FIFO |
|
750 * allocation, take space away from current Rx allocation */ |
|
751 if (tx_space < min_tx_space && |
|
752 ((min_tx_space - tx_space) < pba)) { |
|
753 pba = pba - (min_tx_space - tx_space); |
|
754 |
|
755 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
756 switch (hw->mac_type) { |
|
757 case e1000_82545 ... e1000_82546_rev_3: |
|
758 pba &= ~(E1000_PBA_8K - 1); |
|
759 break; |
|
760 default: |
|
761 break; |
|
762 } |
|
763 |
|
764 /* if short on rx space, rx wins and must trump tx |
|
765 * adjustment or use Early Receive if available */ |
|
766 if (pba < min_rx_space) { |
|
767 switch (hw->mac_type) { |
|
768 case e1000_82573: |
|
769 /* ERT enabled in e1000_configure_rx */ |
|
770 break; |
|
771 default: |
|
772 pba = min_rx_space; |
|
773 break; |
|
774 } |
|
775 } |
|
776 } |
|
777 } |
|
778 |
|
779 ew32(PBA, pba); |
|
780 |
|
781 /* flow control settings */ |
|
782 /* Set the FC high water mark to 90% of the FIFO size. |
|
783 * Required to clear last 3 LSB */ |
|
784 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; |
|
785 /* We can't use 90% on small FIFOs because the remainder |
|
786 * would be less than 1 full frame. In this case, we size |
|
787 * it to allow at least a full frame above the high water |
|
788 * mark. */ |
|
789 if (pba < E1000_PBA_16K) |
|
790 fc_high_water_mark = (pba * 1024) - 1600; |
|
791 |
|
792 hw->fc_high_water = fc_high_water_mark; |
|
793 hw->fc_low_water = fc_high_water_mark - 8; |
|
794 if (hw->mac_type == e1000_80003es2lan) |
|
795 hw->fc_pause_time = 0xFFFF; |
|
796 else |
|
797 hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
|
798 hw->fc_send_xon = 1; |
|
799 hw->fc = hw->original_fc; |
|
800 |
|
801 /* Allow time for pending master requests to run */ |
|
802 e1000_reset_hw(hw); |
|
803 if (hw->mac_type >= e1000_82544) |
|
804 ew32(WUC, 0); |
|
805 |
|
806 if (e1000_init_hw(hw)) |
|
807 DPRINTK(PROBE, ERR, "Hardware Error\n"); |
|
808 e1000_update_mng_vlan(adapter); |
|
809 |
|
810 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
811 if (hw->mac_type >= e1000_82544 && |
|
812 hw->mac_type <= e1000_82547_rev_2 && |
|
813 hw->autoneg == 1 && |
|
814 hw->autoneg_advertised == ADVERTISE_1000_FULL) { |
|
815 u32 ctrl = er32(CTRL); |
|
816 /* clear phy power management bit if we are in gig only mode, |
|
817 * which if enabled will attempt negotiation to 100Mb, which |
|
818 * can cause a loss of link at power off or driver unload */ |
|
819 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
820 ew32(CTRL, ctrl); |
|
821 } |
|
822 |
|
823 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
824 ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
|
825 |
|
826 e1000_reset_adaptive(hw); |
|
827 e1000_phy_get_info(hw, &adapter->phy_info); |
|
828 |
|
829 if (!adapter->smart_power_down && |
|
830 (hw->mac_type == e1000_82571 || |
|
831 hw->mac_type == e1000_82572)) { |
|
832 u16 phy_data = 0; |
|
833 /* speed up time to link by disabling smart power down, ignore |
|
834 * the return value of this function because there is nothing |
|
835 * different we would do if it failed */ |
|
836 e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
|
837 &phy_data); |
|
838 phy_data &= ~IGP02E1000_PM_SPD; |
|
839 e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
|
840 phy_data); |
|
841 } |
|
842 |
|
843 e1000_release_manageability(adapter); |
|
844 } |
|
845 |
|
846 /** |
|
847 * Dump the eeprom for users having checksum issues |
|
848 **/ |
|
849 static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
|
850 { |
|
851 struct net_device *netdev = adapter->netdev; |
|
852 struct ethtool_eeprom eeprom; |
|
853 const struct ethtool_ops *ops = netdev->ethtool_ops; |
|
854 u8 *data; |
|
855 int i; |
|
856 u16 csum_old, csum_new = 0; |
|
857 |
|
858 eeprom.len = ops->get_eeprom_len(netdev); |
|
859 eeprom.offset = 0; |
|
860 |
|
861 data = kmalloc(eeprom.len, GFP_KERNEL); |
|
862 if (!data) { |
|
863 printk(KERN_ERR "Unable to allocate memory to dump EEPROM" |
|
864 " data\n"); |
|
865 return; |
|
866 } |
|
867 |
|
868 ops->get_eeprom(netdev, &eeprom, data); |
|
869 |
|
870 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + |
|
871 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); |
|
872 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) |
|
873 csum_new += data[i] + (data[i + 1] << 8); |
|
874 csum_new = EEPROM_SUM - csum_new; |
|
875 |
|
876 printk(KERN_ERR "/*********************/\n"); |
|
877 printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); |
|
878 printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); |
|
879 |
|
880 printk(KERN_ERR "Offset Values\n"); |
|
881 printk(KERN_ERR "======== ======\n"); |
|
882 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
|
883 |
|
884 printk(KERN_ERR "Include this output when contacting your support " |
|
885 "provider.\n"); |
|
886 printk(KERN_ERR "This is not a software error! Something bad " |
|
887 "happened to your hardware or\n"); |
|
888 printk(KERN_ERR "EEPROM image. Ignoring this " |
|
889 "problem could result in further problems,\n"); |
|
890 printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); |
|
891 printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " |
|
892 "which is invalid\n"); |
|
893 printk(KERN_ERR "and requires you to set the proper MAC " |
|
894 "address manually before continuing\n"); |
|
895 printk(KERN_ERR "to enable this network device.\n"); |
|
896 printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " |
|
897 "to your hardware vendor\n"); |
|
898 printk(KERN_ERR "or Intel Customer Support.\n"); |
|
899 printk(KERN_ERR "/*********************/\n"); |
|
900 |
|
901 kfree(data); |
|
902 } |
|
903 |
|
904 /** |
|
905 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not |
|
906 * @pdev: PCI device information struct |
|
907 * |
|
908 * Return true if an adapter needs ioport resources |
|
909 **/ |
|
910 static int e1000_is_need_ioport(struct pci_dev *pdev) |
|
911 { |
|
912 switch (pdev->device) { |
|
913 case E1000_DEV_ID_82540EM: |
|
914 case E1000_DEV_ID_82540EM_LOM: |
|
915 case E1000_DEV_ID_82540EP: |
|
916 case E1000_DEV_ID_82540EP_LOM: |
|
917 case E1000_DEV_ID_82540EP_LP: |
|
918 case E1000_DEV_ID_82541EI: |
|
919 case E1000_DEV_ID_82541EI_MOBILE: |
|
920 case E1000_DEV_ID_82541ER: |
|
921 case E1000_DEV_ID_82541ER_LOM: |
|
922 case E1000_DEV_ID_82541GI: |
|
923 case E1000_DEV_ID_82541GI_LF: |
|
924 case E1000_DEV_ID_82541GI_MOBILE: |
|
925 case E1000_DEV_ID_82544EI_COPPER: |
|
926 case E1000_DEV_ID_82544EI_FIBER: |
|
927 case E1000_DEV_ID_82544GC_COPPER: |
|
928 case E1000_DEV_ID_82544GC_LOM: |
|
929 case E1000_DEV_ID_82545EM_COPPER: |
|
930 case E1000_DEV_ID_82545EM_FIBER: |
|
931 case E1000_DEV_ID_82546EB_COPPER: |
|
932 case E1000_DEV_ID_82546EB_FIBER: |
|
933 case E1000_DEV_ID_82546EB_QUAD_COPPER: |
|
934 return true; |
|
935 default: |
|
936 return false; |
|
937 } |
|
938 } |
|
939 |
|
940 static const struct net_device_ops e1000_netdev_ops = { |
|
941 .ndo_open = e1000_open, |
|
942 .ndo_stop = e1000_close, |
|
943 .ndo_start_xmit = e1000_xmit_frame, |
|
944 .ndo_get_stats = e1000_get_stats, |
|
945 .ndo_set_rx_mode = e1000_set_rx_mode, |
|
946 .ndo_set_mac_address = e1000_set_mac, |
|
947 .ndo_tx_timeout = e1000_tx_timeout, |
|
948 .ndo_change_mtu = e1000_change_mtu, |
|
949 .ndo_do_ioctl = e1000_ioctl, |
|
950 .ndo_validate_addr = eth_validate_addr, |
|
951 |
|
952 .ndo_vlan_rx_register = e1000_vlan_rx_register, |
|
953 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
954 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
955 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
956 .ndo_poll_controller = e1000_netpoll, |
|
957 #endif |
|
958 }; |
|
959 |
|
960 /** |
|
961 * e1000_probe - Device Initialization Routine |
|
962 * @pdev: PCI device information struct |
|
963 * @ent: entry in e1000_pci_tbl |
|
964 * |
|
965 * Returns 0 on success, negative on failure |
|
966 * |
|
967 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
968 * The OS initialization, configuring of the adapter private structure, |
|
969 * and a hardware reset occur. |
|
970 **/ |
|
971 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
972 const struct pci_device_id *ent) |
|
973 { |
|
974 struct net_device *netdev; |
|
975 struct e1000_adapter *adapter; |
|
976 struct e1000_hw *hw; |
|
977 |
|
978 static int cards_found = 0; |
|
979 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
980 int i, err, pci_using_dac; |
|
981 u16 eeprom_data = 0; |
|
982 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
983 int bars, need_ioport; |
|
984 |
|
985 /* do not allocate ioport bars when not needed */ |
|
986 need_ioport = e1000_is_need_ioport(pdev); |
|
987 if (need_ioport) { |
|
988 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); |
|
989 err = pci_enable_device(pdev); |
|
990 } else { |
|
991 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
992 err = pci_enable_device_mem(pdev); |
|
993 } |
|
994 if (err) |
|
995 return err; |
|
996 |
|
997 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && |
|
998 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { |
|
999 pci_using_dac = 1; |
|
1000 } else { |
|
1001 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
|
1002 if (err) { |
|
1003 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
|
1004 if (err) { |
|
1005 E1000_ERR("No usable DMA configuration, " |
|
1006 "aborting\n"); |
|
1007 goto err_dma; |
|
1008 } |
|
1009 } |
|
1010 pci_using_dac = 0; |
|
1011 } |
|
1012 |
|
1013 err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
|
1014 if (err) |
|
1015 goto err_pci_reg; |
|
1016 |
|
1017 pci_set_master(pdev); |
|
1018 |
|
1019 err = -ENOMEM; |
|
1020 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
1021 if (!netdev) |
|
1022 goto err_alloc_etherdev; |
|
1023 |
|
1024 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
1025 |
|
1026 pci_set_drvdata(pdev, netdev); |
|
1027 adapter = netdev_priv(netdev); |
|
1028 adapter->netdev = netdev; |
|
1029 adapter->pdev = pdev; |
|
1030 adapter->msg_enable = (1 << debug) - 1; |
|
1031 adapter->bars = bars; |
|
1032 adapter->need_ioport = need_ioport; |
|
1033 |
|
1034 hw = &adapter->hw; |
|
1035 hw->back = adapter; |
|
1036 |
|
1037 err = -EIO; |
|
1038 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
|
1039 if (!hw->hw_addr) |
|
1040 goto err_ioremap; |
|
1041 |
|
1042 if (adapter->need_ioport) { |
|
1043 for (i = BAR_1; i <= BAR_5; i++) { |
|
1044 if (pci_resource_len(pdev, i) == 0) |
|
1045 continue; |
|
1046 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
1047 hw->io_base = pci_resource_start(pdev, i); |
|
1048 break; |
|
1049 } |
|
1050 } |
|
1051 } |
|
1052 |
|
1053 netdev->netdev_ops = &e1000_netdev_ops; |
|
1054 e1000_set_ethtool_ops(netdev); |
|
1055 netdev->watchdog_timeo = 5 * HZ; |
|
1056 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
1057 |
|
1058 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
1059 |
|
1060 adapter->bd_number = cards_found; |
|
1061 |
|
1062 /* setup the private structure */ |
|
1063 |
|
1064 err = e1000_sw_init(adapter); |
|
1065 if (err) |
|
1066 goto err_sw_init; |
|
1067 |
|
1068 err = -EIO; |
|
1069 /* Flash BAR mapping must happen after e1000_sw_init |
|
1070 * because it depends on mac_type */ |
|
1071 if ((hw->mac_type == e1000_ich8lan) && |
|
1072 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
|
1073 hw->flash_address = pci_ioremap_bar(pdev, 1); |
|
1074 if (!hw->flash_address) |
|
1075 goto err_flashmap; |
|
1076 } |
|
1077 |
|
1078 if (e1000_check_phy_reset_block(hw)) |
|
1079 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
|
1080 |
|
1081 if (hw->mac_type >= e1000_82543) { |
|
1082 netdev->features = NETIF_F_SG | |
|
1083 NETIF_F_HW_CSUM | |
|
1084 NETIF_F_HW_VLAN_TX | |
|
1085 NETIF_F_HW_VLAN_RX | |
|
1086 NETIF_F_HW_VLAN_FILTER; |
|
1087 if (hw->mac_type == e1000_ich8lan) |
|
1088 netdev->features &= ~NETIF_F_HW_VLAN_FILTER; |
|
1089 } |
|
1090 |
|
1091 if ((hw->mac_type >= e1000_82544) && |
|
1092 (hw->mac_type != e1000_82547)) |
|
1093 netdev->features |= NETIF_F_TSO; |
|
1094 |
|
1095 if (hw->mac_type > e1000_82547_rev_2) |
|
1096 netdev->features |= NETIF_F_TSO6; |
|
1097 if (pci_using_dac) |
|
1098 netdev->features |= NETIF_F_HIGHDMA; |
|
1099 |
|
1100 netdev->vlan_features |= NETIF_F_TSO; |
|
1101 netdev->vlan_features |= NETIF_F_TSO6; |
|
1102 netdev->vlan_features |= NETIF_F_HW_CSUM; |
|
1103 netdev->vlan_features |= NETIF_F_SG; |
|
1104 |
|
1105 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
|
1106 |
|
1107 /* initialize eeprom parameters */ |
|
1108 if (e1000_init_eeprom_params(hw)) { |
|
1109 E1000_ERR("EEPROM initialization failed\n"); |
|
1110 goto err_eeprom; |
|
1111 } |
|
1112 |
|
1113 /* before reading the EEPROM, reset the controller to |
|
1114 * put the device in a known good starting state */ |
|
1115 |
|
1116 e1000_reset_hw(hw); |
|
1117 |
|
1118 /* make sure the EEPROM is good */ |
|
1119 if (e1000_validate_eeprom_checksum(hw) < 0) { |
|
1120 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
|
1121 e1000_dump_eeprom(adapter); |
|
1122 /* |
|
1123 * set MAC address to all zeroes to invalidate and temporary |
|
1124 * disable this device for the user. This blocks regular |
|
1125 * traffic while still permitting ethtool ioctls from reaching |
|
1126 * the hardware as well as allowing the user to run the |
|
1127 * interface after manually setting a hw addr using |
|
1128 * `ip set address` |
|
1129 */ |
|
1130 memset(hw->mac_addr, 0, netdev->addr_len); |
|
1131 } else { |
|
1132 /* copy the MAC address out of the EEPROM */ |
|
1133 if (e1000_read_mac_addr(hw)) |
|
1134 DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
|
1135 } |
|
1136 /* don't block initalization here due to bad MAC address */ |
|
1137 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
|
1138 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); |
|
1139 |
|
1140 if (!is_valid_ether_addr(netdev->perm_addr)) |
|
1141 DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
|
1142 |
|
1143 e1000_get_bus_info(hw); |
|
1144 |
|
1145 init_timer(&adapter->tx_fifo_stall_timer); |
|
1146 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; |
|
1147 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
|
1148 |
|
1149 init_timer(&adapter->watchdog_timer); |
|
1150 adapter->watchdog_timer.function = &e1000_watchdog; |
|
1151 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
1152 |
|
1153 init_timer(&adapter->phy_info_timer); |
|
1154 adapter->phy_info_timer.function = &e1000_update_phy_info; |
|
1155 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
1156 |
|
1157 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
1158 |
|
1159 e1000_check_options(adapter); |
|
1160 |
|
1161 /* Initial Wake on LAN setting |
|
1162 * If APM wake is enabled in the EEPROM, |
|
1163 * enable the ACPI Magic Packet filter |
|
1164 */ |
|
1165 |
|
1166 switch (hw->mac_type) { |
|
1167 case e1000_82542_rev2_0: |
|
1168 case e1000_82542_rev2_1: |
|
1169 case e1000_82543: |
|
1170 break; |
|
1171 case e1000_82544: |
|
1172 e1000_read_eeprom(hw, |
|
1173 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
1174 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
1175 break; |
|
1176 case e1000_ich8lan: |
|
1177 e1000_read_eeprom(hw, |
|
1178 EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); |
|
1179 eeprom_apme_mask = E1000_EEPROM_ICH8_APME; |
|
1180 break; |
|
1181 case e1000_82546: |
|
1182 case e1000_82546_rev_3: |
|
1183 case e1000_82571: |
|
1184 case e1000_80003es2lan: |
|
1185 if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
|
1186 e1000_read_eeprom(hw, |
|
1187 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
1188 break; |
|
1189 } |
|
1190 /* Fall Through */ |
|
1191 default: |
|
1192 e1000_read_eeprom(hw, |
|
1193 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1194 break; |
|
1195 } |
|
1196 if (eeprom_data & eeprom_apme_mask) |
|
1197 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1198 |
|
1199 /* now that we have the eeprom settings, apply the special cases |
|
1200 * where the eeprom may be wrong or the board simply won't support |
|
1201 * wake on lan on a particular port */ |
|
1202 switch (pdev->device) { |
|
1203 case E1000_DEV_ID_82546GB_PCIE: |
|
1204 adapter->eeprom_wol = 0; |
|
1205 break; |
|
1206 case E1000_DEV_ID_82546EB_FIBER: |
|
1207 case E1000_DEV_ID_82546GB_FIBER: |
|
1208 case E1000_DEV_ID_82571EB_FIBER: |
|
1209 /* Wake events only supported on port A for dual fiber |
|
1210 * regardless of eeprom setting */ |
|
1211 if (er32(STATUS) & E1000_STATUS_FUNC_1) |
|
1212 adapter->eeprom_wol = 0; |
|
1213 break; |
|
1214 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1215 case E1000_DEV_ID_82571EB_QUAD_COPPER: |
|
1216 case E1000_DEV_ID_82571EB_QUAD_FIBER: |
|
1217 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: |
|
1218 case E1000_DEV_ID_82571PT_QUAD_COPPER: |
|
1219 /* if quad port adapter, disable WoL on all but port A */ |
|
1220 if (global_quad_port_a != 0) |
|
1221 adapter->eeprom_wol = 0; |
|
1222 else |
|
1223 adapter->quad_port_a = 1; |
|
1224 /* Reset for multiple quad port adapters */ |
|
1225 if (++global_quad_port_a == 4) |
|
1226 global_quad_port_a = 0; |
|
1227 break; |
|
1228 } |
|
1229 |
|
1230 /* initialize the wol settings based on the eeprom settings */ |
|
1231 adapter->wol = adapter->eeprom_wol; |
|
1232 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
1233 |
|
1234 /* print bus type/speed/width info */ |
|
1235 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", |
|
1236 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : |
|
1237 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), |
|
1238 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : |
|
1239 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : |
|
1240 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : |
|
1241 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : |
|
1242 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), |
|
1243 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : |
|
1244 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : |
|
1245 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : |
|
1246 "32-bit")); |
|
1247 |
|
1248 printk("%pM\n", netdev->dev_addr); |
|
1249 |
|
1250 if (hw->bus_type == e1000_bus_type_pci_express) { |
|
1251 DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no " |
|
1252 "longer be supported by this driver in the future.\n", |
|
1253 pdev->vendor, pdev->device); |
|
1254 DPRINTK(PROBE, WARNING, "please use the \"e1000e\" " |
|
1255 "driver instead.\n"); |
|
1256 } |
|
1257 |
|
1258 /* reset the hardware with the new settings */ |
|
1259 e1000_reset(adapter); |
|
1260 |
|
1261 /* If the controller is 82573 and f/w is AMT, do not set |
|
1262 * DRV_LOAD until the interface is up. For all other cases, |
|
1263 * let the f/w know that the h/w is now under the control |
|
1264 * of the driver. */ |
|
1265 if (hw->mac_type != e1000_82573 || |
|
1266 !e1000_check_mng_mode(hw)) |
|
1267 e1000_get_hw_control(adapter); |
|
1268 |
|
1269 // offer device to EtherCAT master module |
|
1270 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
1271 if (adapter->ecdev) { |
|
1272 if (ecdev_open(adapter->ecdev)) { |
|
1273 ecdev_withdraw(adapter->ecdev); |
|
1274 goto err_register; |
|
1275 } |
|
1276 } else { |
|
1277 strcpy(netdev->name, "eth%d"); |
|
1278 err = register_netdev(netdev); |
|
1279 if (err) |
|
1280 goto err_register; |
|
1281 |
|
1282 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
1283 netif_carrier_off(netdev); |
|
1284 } |
|
1285 |
|
1286 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
|
1287 |
|
1288 cards_found++; |
|
1289 return 0; |
|
1290 |
|
1291 err_register: |
|
1292 e1000_release_hw_control(adapter); |
|
1293 err_eeprom: |
|
1294 if (!e1000_check_phy_reset_block(hw)) |
|
1295 e1000_phy_hw_reset(hw); |
|
1296 |
|
1297 if (hw->flash_address) |
|
1298 iounmap(hw->flash_address); |
|
1299 err_flashmap: |
|
1300 kfree(adapter->tx_ring); |
|
1301 kfree(adapter->rx_ring); |
|
1302 err_sw_init: |
|
1303 iounmap(hw->hw_addr); |
|
1304 err_ioremap: |
|
1305 free_netdev(netdev); |
|
1306 err_alloc_etherdev: |
|
1307 pci_release_selected_regions(pdev, bars); |
|
1308 err_pci_reg: |
|
1309 err_dma: |
|
1310 pci_disable_device(pdev); |
|
1311 return err; |
|
1312 } |
|
1313 |
|
1314 /** |
|
1315 * e1000_remove - Device Removal Routine |
|
1316 * @pdev: PCI device information struct |
|
1317 * |
|
1318 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1319 * that it should release a PCI device. The could be caused by a |
|
1320 * Hot-Plug event, or because the driver is going to be removed from |
|
1321 * memory. |
|
1322 **/ |
|
1323 |
|
1324 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
1325 { |
|
1326 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1327 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1328 struct e1000_hw *hw = &adapter->hw; |
|
1329 |
|
1330 cancel_work_sync(&adapter->reset_task); |
|
1331 |
|
1332 e1000_release_manageability(adapter); |
|
1333 |
|
1334 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
1335 * would have already happened in close and is redundant. */ |
|
1336 e1000_release_hw_control(adapter); |
|
1337 |
|
1338 if (adapter->ecdev) { |
|
1339 ecdev_close(adapter->ecdev); |
|
1340 ecdev_withdraw(adapter->ecdev); |
|
1341 } else { |
|
1342 unregister_netdev(netdev); |
|
1343 } |
|
1344 |
|
1345 if (!e1000_check_phy_reset_block(hw)) |
|
1346 e1000_phy_hw_reset(hw); |
|
1347 |
|
1348 kfree(adapter->tx_ring); |
|
1349 kfree(adapter->rx_ring); |
|
1350 |
|
1351 iounmap(hw->hw_addr); |
|
1352 if (hw->flash_address) |
|
1353 iounmap(hw->flash_address); |
|
1354 pci_release_selected_regions(pdev, adapter->bars); |
|
1355 |
|
1356 free_netdev(netdev); |
|
1357 |
|
1358 pci_disable_device(pdev); |
|
1359 } |
|
1360 |
|
1361 /** |
|
1362 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1363 * @adapter: board private structure to initialize |
|
1364 * |
|
1365 * e1000_sw_init initializes the Adapter private data structure. |
|
1366 * Fields are initialized based on PCI device information and |
|
1367 * OS network device settings (MTU size). |
|
1368 **/ |
|
1369 |
|
1370 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
1371 { |
|
1372 struct e1000_hw *hw = &adapter->hw; |
|
1373 struct net_device *netdev = adapter->netdev; |
|
1374 struct pci_dev *pdev = adapter->pdev; |
|
1375 |
|
1376 /* PCI config space info */ |
|
1377 |
|
1378 hw->vendor_id = pdev->vendor; |
|
1379 hw->device_id = pdev->device; |
|
1380 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
1381 hw->subsystem_id = pdev->subsystem_device; |
|
1382 hw->revision_id = pdev->revision; |
|
1383 |
|
1384 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
1385 |
|
1386 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1387 hw->max_frame_size = netdev->mtu + |
|
1388 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
1389 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
1390 |
|
1391 /* identify the MAC */ |
|
1392 |
|
1393 if (e1000_set_mac_type(hw)) { |
|
1394 DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
|
1395 return -EIO; |
|
1396 } |
|
1397 |
|
1398 switch (hw->mac_type) { |
|
1399 default: |
|
1400 break; |
|
1401 case e1000_82541: |
|
1402 case e1000_82547: |
|
1403 case e1000_82541_rev_2: |
|
1404 case e1000_82547_rev_2: |
|
1405 hw->phy_init_script = 1; |
|
1406 break; |
|
1407 } |
|
1408 |
|
1409 e1000_set_media_type(hw); |
|
1410 |
|
1411 hw->wait_autoneg_complete = false; |
|
1412 hw->tbi_compatibility_en = true; |
|
1413 hw->adaptive_ifs = true; |
|
1414 |
|
1415 /* Copper options */ |
|
1416 |
|
1417 if (hw->media_type == e1000_media_type_copper) { |
|
1418 hw->mdix = AUTO_ALL_MODES; |
|
1419 hw->disable_polarity_correction = false; |
|
1420 hw->master_slave = E1000_MASTER_SLAVE; |
|
1421 } |
|
1422 |
|
1423 adapter->num_tx_queues = 1; |
|
1424 adapter->num_rx_queues = 1; |
|
1425 |
|
1426 if (e1000_alloc_queues(adapter)) { |
|
1427 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); |
|
1428 return -ENOMEM; |
|
1429 } |
|
1430 |
|
1431 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1432 e1000_irq_disable(adapter); |
|
1433 |
|
1434 spin_lock_init(&adapter->stats_lock); |
|
1435 |
|
1436 set_bit(__E1000_DOWN, &adapter->flags); |
|
1437 |
|
1438 return 0; |
|
1439 } |
|
1440 |
|
1441 /** |
|
1442 * e1000_alloc_queues - Allocate memory for all rings |
|
1443 * @adapter: board private structure to initialize |
|
1444 * |
|
1445 * We allocate one ring per queue at run-time since we don't know the |
|
1446 * number of queues at compile-time. |
|
1447 **/ |
|
1448 |
|
1449 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1450 { |
|
1451 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1452 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1453 if (!adapter->tx_ring) |
|
1454 return -ENOMEM; |
|
1455 |
|
1456 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1457 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1458 if (!adapter->rx_ring) { |
|
1459 kfree(adapter->tx_ring); |
|
1460 return -ENOMEM; |
|
1461 } |
|
1462 |
|
1463 return E1000_SUCCESS; |
|
1464 } |
|
1465 |
|
1466 /** |
|
1467 * e1000_open - Called when a network interface is made active |
|
1468 * @netdev: network interface device structure |
|
1469 * |
|
1470 * Returns 0 on success, negative value on failure |
|
1471 * |
|
1472 * The open entry point is called when a network interface is made |
|
1473 * active by the system (IFF_UP). At this point all resources needed |
|
1474 * for transmit and receive operations are allocated, the interrupt |
|
1475 * handler is registered with the OS, the watchdog timer is started, |
|
1476 * and the stack is notified that the interface is ready. |
|
1477 **/ |
|
1478 |
|
1479 static int e1000_open(struct net_device *netdev) |
|
1480 { |
|
1481 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1482 struct e1000_hw *hw = &adapter->hw; |
|
1483 int err; |
|
1484 |
|
1485 /* disallow open during test */ |
|
1486 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1487 return -EBUSY; |
|
1488 |
|
1489 netif_carrier_off(netdev); |
|
1490 |
|
1491 /* allocate transmit descriptors */ |
|
1492 err = e1000_setup_all_tx_resources(adapter); |
|
1493 if (err) |
|
1494 goto err_setup_tx; |
|
1495 |
|
1496 /* allocate receive descriptors */ |
|
1497 err = e1000_setup_all_rx_resources(adapter); |
|
1498 if (err) |
|
1499 goto err_setup_rx; |
|
1500 |
|
1501 e1000_power_up_phy(adapter); |
|
1502 |
|
1503 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1504 if ((hw->mng_cookie.status & |
|
1505 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1506 e1000_update_mng_vlan(adapter); |
|
1507 } |
|
1508 |
|
1509 /* If AMT is enabled, let the firmware know that the network |
|
1510 * interface is now open */ |
|
1511 if (hw->mac_type == e1000_82573 && |
|
1512 e1000_check_mng_mode(hw)) |
|
1513 e1000_get_hw_control(adapter); |
|
1514 |
|
1515 /* before we allocate an interrupt, we must be ready to handle it. |
|
1516 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1517 * as soon as we call pci_request_irq, so we have to setup our |
|
1518 * clean_rx handler before we do so. */ |
|
1519 e1000_configure(adapter); |
|
1520 |
|
1521 err = e1000_request_irq(adapter); |
|
1522 if (err) |
|
1523 goto err_req_irq; |
|
1524 |
|
1525 /* From here on the code is the same as e1000_up() */ |
|
1526 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1527 |
|
1528 napi_enable(&adapter->napi); |
|
1529 |
|
1530 e1000_irq_enable(adapter); |
|
1531 |
|
1532 netif_start_queue(netdev); |
|
1533 |
|
1534 /* fire a link status change interrupt to start the watchdog */ |
|
1535 ew32(ICS, E1000_ICS_LSC); |
|
1536 |
|
1537 return E1000_SUCCESS; |
|
1538 |
|
1539 err_req_irq: |
|
1540 e1000_release_hw_control(adapter); |
|
1541 e1000_power_down_phy(adapter); |
|
1542 e1000_free_all_rx_resources(adapter); |
|
1543 err_setup_rx: |
|
1544 e1000_free_all_tx_resources(adapter); |
|
1545 err_setup_tx: |
|
1546 e1000_reset(adapter); |
|
1547 |
|
1548 return err; |
|
1549 } |
|
1550 |
|
1551 /** |
|
1552 * e1000_close - Disables a network interface |
|
1553 * @netdev: network interface device structure |
|
1554 * |
|
1555 * Returns 0, this is not allowed to fail |
|
1556 * |
|
1557 * The close entry point is called when an interface is de-activated |
|
1558 * by the OS. The hardware is still under the drivers control, but |
|
1559 * needs to be disabled. A global MAC reset is issued to stop the |
|
1560 * hardware, and all transmit and receive resources are freed. |
|
1561 **/ |
|
1562 |
|
1563 static int e1000_close(struct net_device *netdev) |
|
1564 { |
|
1565 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1566 struct e1000_hw *hw = &adapter->hw; |
|
1567 |
|
1568 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1569 e1000_down(adapter); |
|
1570 e1000_power_down_phy(adapter); |
|
1571 e1000_free_irq(adapter); |
|
1572 |
|
1573 e1000_free_all_tx_resources(adapter); |
|
1574 e1000_free_all_rx_resources(adapter); |
|
1575 |
|
1576 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1577 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1578 if ((hw->mng_cookie.status & |
|
1579 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1580 !(adapter->vlgrp && |
|
1581 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1582 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1583 } |
|
1584 |
|
1585 /* If AMT is enabled, let the firmware know that the network |
|
1586 * interface is now closed */ |
|
1587 if (hw->mac_type == e1000_82573 && |
|
1588 e1000_check_mng_mode(hw)) |
|
1589 e1000_release_hw_control(adapter); |
|
1590 |
|
1591 return 0; |
|
1592 } |
|
1593 |
|
1594 /** |
|
1595 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1596 * @adapter: address of board private structure |
|
1597 * @start: address of beginning of memory |
|
1598 * @len: length of memory |
|
1599 **/ |
|
1600 static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
|
1601 unsigned long len) |
|
1602 { |
|
1603 struct e1000_hw *hw = &adapter->hw; |
|
1604 unsigned long begin = (unsigned long)start; |
|
1605 unsigned long end = begin + len; |
|
1606 |
|
1607 /* First rev 82545 and 82546 need to not allow any memory |
|
1608 * write location to cross 64k boundary due to errata 23 */ |
|
1609 if (hw->mac_type == e1000_82545 || |
|
1610 hw->mac_type == e1000_82546) { |
|
1611 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
|
1612 } |
|
1613 |
|
1614 return true; |
|
1615 } |
|
1616 |
|
1617 /** |
|
1618 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1619 * @adapter: board private structure |
|
1620 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1621 * |
|
1622 * Return 0 on success, negative on failure |
|
1623 **/ |
|
1624 |
|
1625 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1626 struct e1000_tx_ring *txdr) |
|
1627 { |
|
1628 struct pci_dev *pdev = adapter->pdev; |
|
1629 int size; |
|
1630 |
|
1631 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1632 txdr->buffer_info = vmalloc(size); |
|
1633 if (!txdr->buffer_info) { |
|
1634 DPRINTK(PROBE, ERR, |
|
1635 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1636 return -ENOMEM; |
|
1637 } |
|
1638 memset(txdr->buffer_info, 0, size); |
|
1639 |
|
1640 /* round up to nearest 4K */ |
|
1641 |
|
1642 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1643 txdr->size = ALIGN(txdr->size, 4096); |
|
1644 |
|
1645 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1646 if (!txdr->desc) { |
|
1647 setup_tx_desc_die: |
|
1648 vfree(txdr->buffer_info); |
|
1649 DPRINTK(PROBE, ERR, |
|
1650 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1651 return -ENOMEM; |
|
1652 } |
|
1653 |
|
1654 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1655 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1656 void *olddesc = txdr->desc; |
|
1657 dma_addr_t olddma = txdr->dma; |
|
1658 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
|
1659 "at %p\n", txdr->size, txdr->desc); |
|
1660 /* Try again, without freeing the previous */ |
|
1661 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1662 /* Failed allocation, critical failure */ |
|
1663 if (!txdr->desc) { |
|
1664 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1665 goto setup_tx_desc_die; |
|
1666 } |
|
1667 |
|
1668 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1669 /* give up */ |
|
1670 pci_free_consistent(pdev, txdr->size, txdr->desc, |
|
1671 txdr->dma); |
|
1672 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1673 DPRINTK(PROBE, ERR, |
|
1674 "Unable to allocate aligned memory " |
|
1675 "for the transmit descriptor ring\n"); |
|
1676 vfree(txdr->buffer_info); |
|
1677 return -ENOMEM; |
|
1678 } else { |
|
1679 /* Free old allocation, new allocation was successful */ |
|
1680 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1681 } |
|
1682 } |
|
1683 memset(txdr->desc, 0, txdr->size); |
|
1684 |
|
1685 txdr->next_to_use = 0; |
|
1686 txdr->next_to_clean = 0; |
|
1687 |
|
1688 return 0; |
|
1689 } |
|
1690 |
|
1691 /** |
|
1692 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1693 * (Descriptors) for all queues |
|
1694 * @adapter: board private structure |
|
1695 * |
|
1696 * Return 0 on success, negative on failure |
|
1697 **/ |
|
1698 |
|
1699 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1700 { |
|
1701 int i, err = 0; |
|
1702 |
|
1703 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1704 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1705 if (err) { |
|
1706 DPRINTK(PROBE, ERR, |
|
1707 "Allocation for Tx Queue %u failed\n", i); |
|
1708 for (i-- ; i >= 0; i--) |
|
1709 e1000_free_tx_resources(adapter, |
|
1710 &adapter->tx_ring[i]); |
|
1711 break; |
|
1712 } |
|
1713 } |
|
1714 |
|
1715 return err; |
|
1716 } |
|
1717 |
|
1718 /** |
|
1719 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1720 * @adapter: board private structure |
|
1721 * |
|
1722 * Configure the Tx unit of the MAC after a reset. |
|
1723 **/ |
|
1724 |
|
1725 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
1726 { |
|
1727 u64 tdba; |
|
1728 struct e1000_hw *hw = &adapter->hw; |
|
1729 u32 tdlen, tctl, tipg, tarc; |
|
1730 u32 ipgr1, ipgr2; |
|
1731 |
|
1732 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1733 |
|
1734 switch (adapter->num_tx_queues) { |
|
1735 case 1: |
|
1736 default: |
|
1737 tdba = adapter->tx_ring[0].dma; |
|
1738 tdlen = adapter->tx_ring[0].count * |
|
1739 sizeof(struct e1000_tx_desc); |
|
1740 ew32(TDLEN, tdlen); |
|
1741 ew32(TDBAH, (tdba >> 32)); |
|
1742 ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1743 ew32(TDT, 0); |
|
1744 ew32(TDH, 0); |
|
1745 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1746 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1747 break; |
|
1748 } |
|
1749 |
|
1750 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1751 if (hw->mac_type <= e1000_82547_rev_2 && |
|
1752 (hw->media_type == e1000_media_type_fiber || |
|
1753 hw->media_type == e1000_media_type_internal_serdes)) |
|
1754 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1755 else |
|
1756 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1757 |
|
1758 switch (hw->mac_type) { |
|
1759 case e1000_82542_rev2_0: |
|
1760 case e1000_82542_rev2_1: |
|
1761 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1762 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1763 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1764 break; |
|
1765 case e1000_80003es2lan: |
|
1766 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1767 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; |
|
1768 break; |
|
1769 default: |
|
1770 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1771 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1772 break; |
|
1773 } |
|
1774 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1775 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1776 ew32(TIPG, tipg); |
|
1777 |
|
1778 /* Set the Tx Interrupt Delay register */ |
|
1779 |
|
1780 ew32(TIDV, adapter->tx_int_delay); |
|
1781 if (hw->mac_type >= e1000_82540) |
|
1782 ew32(TADV, adapter->tx_abs_int_delay); |
|
1783 |
|
1784 /* Program the Transmit Control Register */ |
|
1785 |
|
1786 tctl = er32(TCTL); |
|
1787 tctl &= ~E1000_TCTL_CT; |
|
1788 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1789 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1790 |
|
1791 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
|
1792 tarc = er32(TARC0); |
|
1793 /* set the speed mode bit, we'll clear it if we're not at |
|
1794 * gigabit link later */ |
|
1795 tarc |= (1 << 21); |
|
1796 ew32(TARC0, tarc); |
|
1797 } else if (hw->mac_type == e1000_80003es2lan) { |
|
1798 tarc = er32(TARC0); |
|
1799 tarc |= 1; |
|
1800 ew32(TARC0, tarc); |
|
1801 tarc = er32(TARC1); |
|
1802 tarc |= 1; |
|
1803 ew32(TARC1, tarc); |
|
1804 } |
|
1805 |
|
1806 e1000_config_collision_dist(hw); |
|
1807 |
|
1808 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1809 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1810 |
|
1811 /* only set IDE if we are delaying interrupts using the timers */ |
|
1812 if (adapter->tx_int_delay) |
|
1813 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1814 |
|
1815 if (hw->mac_type < e1000_82543) |
|
1816 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1817 else |
|
1818 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1819 |
|
1820 /* Cache if we're 82544 running in PCI-X because we'll |
|
1821 * need this to apply a workaround later in the send path. */ |
|
1822 if (hw->mac_type == e1000_82544 && |
|
1823 hw->bus_type == e1000_bus_type_pcix) |
|
1824 adapter->pcix_82544 = 1; |
|
1825 |
|
1826 ew32(TCTL, tctl); |
|
1827 |
|
1828 } |
|
1829 |
|
1830 /** |
|
1831 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1832 * @adapter: board private structure |
|
1833 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1834 * |
|
1835 * Returns 0 on success, negative on failure |
|
1836 **/ |
|
1837 |
|
1838 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1839 struct e1000_rx_ring *rxdr) |
|
1840 { |
|
1841 struct e1000_hw *hw = &adapter->hw; |
|
1842 struct pci_dev *pdev = adapter->pdev; |
|
1843 int size, desc_len; |
|
1844 |
|
1845 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1846 rxdr->buffer_info = vmalloc(size); |
|
1847 if (!rxdr->buffer_info) { |
|
1848 DPRINTK(PROBE, ERR, |
|
1849 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1850 return -ENOMEM; |
|
1851 } |
|
1852 memset(rxdr->buffer_info, 0, size); |
|
1853 |
|
1854 if (hw->mac_type <= e1000_82547_rev_2) |
|
1855 desc_len = sizeof(struct e1000_rx_desc); |
|
1856 else |
|
1857 desc_len = sizeof(union e1000_rx_desc_packet_split); |
|
1858 |
|
1859 /* Round up to nearest 4K */ |
|
1860 |
|
1861 rxdr->size = rxdr->count * desc_len; |
|
1862 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1863 |
|
1864 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1865 |
|
1866 if (!rxdr->desc) { |
|
1867 DPRINTK(PROBE, ERR, |
|
1868 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1869 setup_rx_desc_die: |
|
1870 vfree(rxdr->buffer_info); |
|
1871 return -ENOMEM; |
|
1872 } |
|
1873 |
|
1874 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1875 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1876 void *olddesc = rxdr->desc; |
|
1877 dma_addr_t olddma = rxdr->dma; |
|
1878 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
|
1879 "at %p\n", rxdr->size, rxdr->desc); |
|
1880 /* Try again, without freeing the previous */ |
|
1881 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1882 /* Failed allocation, critical failure */ |
|
1883 if (!rxdr->desc) { |
|
1884 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1885 DPRINTK(PROBE, ERR, |
|
1886 "Unable to allocate memory " |
|
1887 "for the receive descriptor ring\n"); |
|
1888 goto setup_rx_desc_die; |
|
1889 } |
|
1890 |
|
1891 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1892 /* give up */ |
|
1893 pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
|
1894 rxdr->dma); |
|
1895 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1896 DPRINTK(PROBE, ERR, |
|
1897 "Unable to allocate aligned memory " |
|
1898 "for the receive descriptor ring\n"); |
|
1899 goto setup_rx_desc_die; |
|
1900 } else { |
|
1901 /* Free old allocation, new allocation was successful */ |
|
1902 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1903 } |
|
1904 } |
|
1905 memset(rxdr->desc, 0, rxdr->size); |
|
1906 |
|
1907 rxdr->next_to_clean = 0; |
|
1908 rxdr->next_to_use = 0; |
|
1909 |
|
1910 return 0; |
|
1911 } |
|
1912 |
|
1913 /** |
|
1914 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1915 * (Descriptors) for all queues |
|
1916 * @adapter: board private structure |
|
1917 * |
|
1918 * Return 0 on success, negative on failure |
|
1919 **/ |
|
1920 |
|
1921 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1922 { |
|
1923 int i, err = 0; |
|
1924 |
|
1925 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1926 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1927 if (err) { |
|
1928 DPRINTK(PROBE, ERR, |
|
1929 "Allocation for Rx Queue %u failed\n", i); |
|
1930 for (i-- ; i >= 0; i--) |
|
1931 e1000_free_rx_resources(adapter, |
|
1932 &adapter->rx_ring[i]); |
|
1933 break; |
|
1934 } |
|
1935 } |
|
1936 |
|
1937 return err; |
|
1938 } |
|
1939 |
|
1940 /** |
|
1941 * e1000_setup_rctl - configure the receive control registers |
|
1942 * @adapter: Board private structure |
|
1943 **/ |
|
1944 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1945 { |
|
1946 struct e1000_hw *hw = &adapter->hw; |
|
1947 u32 rctl; |
|
1948 |
|
1949 rctl = er32(RCTL); |
|
1950 |
|
1951 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1952 |
|
1953 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1954 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1955 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1956 |
|
1957 if (hw->tbi_compatibility_on == 1) |
|
1958 rctl |= E1000_RCTL_SBP; |
|
1959 else |
|
1960 rctl &= ~E1000_RCTL_SBP; |
|
1961 |
|
1962 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1963 rctl &= ~E1000_RCTL_LPE; |
|
1964 else |
|
1965 rctl |= E1000_RCTL_LPE; |
|
1966 |
|
1967 /* Setup buffer sizes */ |
|
1968 rctl &= ~E1000_RCTL_SZ_4096; |
|
1969 rctl |= E1000_RCTL_BSEX; |
|
1970 switch (adapter->rx_buffer_len) { |
|
1971 case E1000_RXBUFFER_256: |
|
1972 rctl |= E1000_RCTL_SZ_256; |
|
1973 rctl &= ~E1000_RCTL_BSEX; |
|
1974 break; |
|
1975 case E1000_RXBUFFER_512: |
|
1976 rctl |= E1000_RCTL_SZ_512; |
|
1977 rctl &= ~E1000_RCTL_BSEX; |
|
1978 break; |
|
1979 case E1000_RXBUFFER_1024: |
|
1980 rctl |= E1000_RCTL_SZ_1024; |
|
1981 rctl &= ~E1000_RCTL_BSEX; |
|
1982 break; |
|
1983 case E1000_RXBUFFER_2048: |
|
1984 default: |
|
1985 rctl |= E1000_RCTL_SZ_2048; |
|
1986 rctl &= ~E1000_RCTL_BSEX; |
|
1987 break; |
|
1988 case E1000_RXBUFFER_4096: |
|
1989 rctl |= E1000_RCTL_SZ_4096; |
|
1990 break; |
|
1991 case E1000_RXBUFFER_8192: |
|
1992 rctl |= E1000_RCTL_SZ_8192; |
|
1993 break; |
|
1994 case E1000_RXBUFFER_16384: |
|
1995 rctl |= E1000_RCTL_SZ_16384; |
|
1996 break; |
|
1997 } |
|
1998 |
|
1999 ew32(RCTL, rctl); |
|
2000 } |
|
2001 |
|
2002 /** |
|
2003 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
2004 * @adapter: board private structure |
|
2005 * |
|
2006 * Configure the Rx unit of the MAC after a reset. |
|
2007 **/ |
|
2008 |
|
2009 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
2010 { |
|
2011 u64 rdba; |
|
2012 struct e1000_hw *hw = &adapter->hw; |
|
2013 u32 rdlen, rctl, rxcsum, ctrl_ext; |
|
2014 |
|
2015 rdlen = adapter->rx_ring[0].count * |
|
2016 sizeof(struct e1000_rx_desc); |
|
2017 adapter->clean_rx = e1000_clean_rx_irq; |
|
2018 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
2019 |
|
2020 /* disable receives while setting up the descriptors */ |
|
2021 rctl = er32(RCTL); |
|
2022 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
2023 |
|
2024 /* set the Receive Delay Timer Register */ |
|
2025 ew32(RDTR, adapter->rx_int_delay); |
|
2026 |
|
2027 if (hw->mac_type >= e1000_82540) { |
|
2028 ew32(RADV, adapter->rx_abs_int_delay); |
|
2029 if (adapter->itr_setting != 0) |
|
2030 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
2031 } |
|
2032 |
|
2033 if (hw->mac_type >= e1000_82571) { |
|
2034 ctrl_ext = er32(CTRL_EXT); |
|
2035 /* Reset delay timers after every interrupt */ |
|
2036 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
|
2037 /* Auto-Mask interrupts upon ICR access */ |
|
2038 ctrl_ext |= E1000_CTRL_EXT_IAME; |
|
2039 ew32(IAM, 0xffffffff); |
|
2040 ew32(CTRL_EXT, ctrl_ext); |
|
2041 E1000_WRITE_FLUSH(); |
|
2042 } |
|
2043 |
|
2044 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
2045 * the Base and Length of the Rx Descriptor Ring */ |
|
2046 switch (adapter->num_rx_queues) { |
|
2047 case 1: |
|
2048 default: |
|
2049 rdba = adapter->rx_ring[0].dma; |
|
2050 ew32(RDLEN, rdlen); |
|
2051 ew32(RDBAH, (rdba >> 32)); |
|
2052 ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
2053 ew32(RDT, 0); |
|
2054 ew32(RDH, 0); |
|
2055 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
2056 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
2057 break; |
|
2058 } |
|
2059 |
|
2060 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
2061 if (hw->mac_type >= e1000_82543) { |
|
2062 rxcsum = er32(RXCSUM); |
|
2063 if (adapter->rx_csum) |
|
2064 rxcsum |= E1000_RXCSUM_TUOFL; |
|
2065 else |
|
2066 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
2067 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
2068 ew32(RXCSUM, rxcsum); |
|
2069 } |
|
2070 |
|
2071 /* Enable Receives */ |
|
2072 ew32(RCTL, rctl); |
|
2073 } |
|
2074 |
|
2075 /** |
|
2076 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
2077 * @adapter: board private structure |
|
2078 * @tx_ring: Tx descriptor ring for a specific queue |
|
2079 * |
|
2080 * Free all transmit software resources |
|
2081 **/ |
|
2082 |
|
2083 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
2084 struct e1000_tx_ring *tx_ring) |
|
2085 { |
|
2086 struct pci_dev *pdev = adapter->pdev; |
|
2087 |
|
2088 e1000_clean_tx_ring(adapter, tx_ring); |
|
2089 |
|
2090 vfree(tx_ring->buffer_info); |
|
2091 tx_ring->buffer_info = NULL; |
|
2092 |
|
2093 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
|
2094 |
|
2095 tx_ring->desc = NULL; |
|
2096 } |
|
2097 |
|
2098 /** |
|
2099 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
2100 * @adapter: board private structure |
|
2101 * |
|
2102 * Free all transmit software resources |
|
2103 **/ |
|
2104 |
|
2105 void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
2106 { |
|
2107 int i; |
|
2108 |
|
2109 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2110 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
2111 } |
|
2112 |
|
2113 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
2114 struct e1000_buffer *buffer_info) |
|
2115 { |
|
2116 if (adapter->ecdev) |
|
2117 return; |
|
2118 |
|
2119 buffer_info->dma = 0; |
|
2120 if (buffer_info->skb) { |
|
2121 skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb, |
|
2122 DMA_TO_DEVICE); |
|
2123 dev_kfree_skb_any(buffer_info->skb); |
|
2124 buffer_info->skb = NULL; |
|
2125 } |
|
2126 buffer_info->time_stamp = 0; |
|
2127 /* buffer_info must be completely set up in the transmit path */ |
|
2128 } |
|
2129 |
|
2130 /** |
|
2131 * e1000_clean_tx_ring - Free Tx Buffers |
|
2132 * @adapter: board private structure |
|
2133 * @tx_ring: ring to be cleaned |
|
2134 **/ |
|
2135 |
|
2136 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
2137 struct e1000_tx_ring *tx_ring) |
|
2138 { |
|
2139 struct e1000_hw *hw = &adapter->hw; |
|
2140 struct e1000_buffer *buffer_info; |
|
2141 unsigned long size; |
|
2142 unsigned int i; |
|
2143 |
|
2144 /* Free all the Tx ring sk_buffs */ |
|
2145 |
|
2146 for (i = 0; i < tx_ring->count; i++) { |
|
2147 buffer_info = &tx_ring->buffer_info[i]; |
|
2148 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
2149 } |
|
2150 |
|
2151 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2152 memset(tx_ring->buffer_info, 0, size); |
|
2153 |
|
2154 /* Zero out the descriptor ring */ |
|
2155 |
|
2156 memset(tx_ring->desc, 0, tx_ring->size); |
|
2157 |
|
2158 tx_ring->next_to_use = 0; |
|
2159 tx_ring->next_to_clean = 0; |
|
2160 tx_ring->last_tx_tso = 0; |
|
2161 |
|
2162 writel(0, hw->hw_addr + tx_ring->tdh); |
|
2163 writel(0, hw->hw_addr + tx_ring->tdt); |
|
2164 } |
|
2165 |
|
2166 /** |
|
2167 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
2168 * @adapter: board private structure |
|
2169 **/ |
|
2170 |
|
2171 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
2172 { |
|
2173 int i; |
|
2174 |
|
2175 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2176 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
2177 } |
|
2178 |
|
2179 /** |
|
2180 * e1000_free_rx_resources - Free Rx Resources |
|
2181 * @adapter: board private structure |
|
2182 * @rx_ring: ring to clean the resources from |
|
2183 * |
|
2184 * Free all receive software resources |
|
2185 **/ |
|
2186 |
|
2187 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
2188 struct e1000_rx_ring *rx_ring) |
|
2189 { |
|
2190 struct pci_dev *pdev = adapter->pdev; |
|
2191 |
|
2192 e1000_clean_rx_ring(adapter, rx_ring); |
|
2193 |
|
2194 vfree(rx_ring->buffer_info); |
|
2195 rx_ring->buffer_info = NULL; |
|
2196 |
|
2197 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
|
2198 |
|
2199 rx_ring->desc = NULL; |
|
2200 } |
|
2201 |
|
2202 /** |
|
2203 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
2204 * @adapter: board private structure |
|
2205 * |
|
2206 * Free all receive software resources |
|
2207 **/ |
|
2208 |
|
2209 void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
2210 { |
|
2211 int i; |
|
2212 |
|
2213 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2214 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
2215 } |
|
2216 |
|
2217 /** |
|
2218 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
2219 * @adapter: board private structure |
|
2220 * @rx_ring: ring to free buffers from |
|
2221 **/ |
|
2222 |
|
2223 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
2224 struct e1000_rx_ring *rx_ring) |
|
2225 { |
|
2226 struct e1000_hw *hw = &adapter->hw; |
|
2227 struct e1000_buffer *buffer_info; |
|
2228 struct pci_dev *pdev = adapter->pdev; |
|
2229 unsigned long size; |
|
2230 unsigned int i; |
|
2231 |
|
2232 /* Free all the Rx ring sk_buffs */ |
|
2233 for (i = 0; i < rx_ring->count; i++) { |
|
2234 buffer_info = &rx_ring->buffer_info[i]; |
|
2235 if (buffer_info->dma) { |
|
2236 pci_unmap_single(pdev, |
|
2237 buffer_info->dma, |
|
2238 buffer_info->length, |
|
2239 PCI_DMA_FROMDEVICE); |
|
2240 } |
|
2241 |
|
2242 buffer_info->dma = 0; |
|
2243 |
|
2244 if (buffer_info->skb) { |
|
2245 dev_kfree_skb(buffer_info->skb); |
|
2246 buffer_info->skb = NULL; |
|
2247 } |
|
2248 } |
|
2249 |
|
2250 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2251 memset(rx_ring->buffer_info, 0, size); |
|
2252 |
|
2253 /* Zero out the descriptor ring */ |
|
2254 |
|
2255 memset(rx_ring->desc, 0, rx_ring->size); |
|
2256 |
|
2257 rx_ring->next_to_clean = 0; |
|
2258 rx_ring->next_to_use = 0; |
|
2259 |
|
2260 writel(0, hw->hw_addr + rx_ring->rdh); |
|
2261 writel(0, hw->hw_addr + rx_ring->rdt); |
|
2262 } |
|
2263 |
|
2264 /** |
|
2265 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
2266 * @adapter: board private structure |
|
2267 **/ |
|
2268 |
|
2269 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
2270 { |
|
2271 int i; |
|
2272 |
|
2273 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2274 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
2275 } |
|
2276 |
|
2277 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2278 * and memory write and invalidate disabled for certain operations |
|
2279 */ |
|
2280 static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2281 { |
|
2282 struct e1000_hw *hw = &adapter->hw; |
|
2283 struct net_device *netdev = adapter->netdev; |
|
2284 u32 rctl; |
|
2285 |
|
2286 e1000_pci_clear_mwi(hw); |
|
2287 |
|
2288 rctl = er32(RCTL); |
|
2289 rctl |= E1000_RCTL_RST; |
|
2290 ew32(RCTL, rctl); |
|
2291 E1000_WRITE_FLUSH(); |
|
2292 mdelay(5); |
|
2293 |
|
2294 if (!adapter->ecdev && netif_running(netdev)) |
|
2295 e1000_clean_all_rx_rings(adapter); |
|
2296 } |
|
2297 |
|
2298 static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2299 { |
|
2300 struct e1000_hw *hw = &adapter->hw; |
|
2301 struct net_device *netdev = adapter->netdev; |
|
2302 u32 rctl; |
|
2303 |
|
2304 rctl = er32(RCTL); |
|
2305 rctl &= ~E1000_RCTL_RST; |
|
2306 ew32(RCTL, rctl); |
|
2307 E1000_WRITE_FLUSH(); |
|
2308 mdelay(5); |
|
2309 |
|
2310 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2311 e1000_pci_set_mwi(hw); |
|
2312 |
|
2313 if (!adapter->netdev && netif_running(netdev)) { |
|
2314 /* No need to loop, because 82542 supports only 1 queue */ |
|
2315 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2316 e1000_configure_rx(adapter); |
|
2317 if (adapter->ecdev) { |
|
2318 /* fill rx ring completely! */ |
|
2319 adapter->alloc_rx_buf(adapter, ring, ring->count); |
|
2320 } else { |
|
2321 /* this one leaves the last ring element unallocated! */ |
|
2322 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2323 } |
|
2324 |
|
2325 } |
|
2326 } |
|
2327 |
|
2328 /** |
|
2329 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2330 * @netdev: network interface device structure |
|
2331 * @p: pointer to an address structure |
|
2332 * |
|
2333 * Returns 0 on success, negative on failure |
|
2334 **/ |
|
2335 |
|
2336 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
2337 { |
|
2338 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2339 struct e1000_hw *hw = &adapter->hw; |
|
2340 struct sockaddr *addr = p; |
|
2341 |
|
2342 if (!is_valid_ether_addr(addr->sa_data)) |
|
2343 return -EADDRNOTAVAIL; |
|
2344 |
|
2345 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2346 |
|
2347 if (hw->mac_type == e1000_82542_rev2_0) |
|
2348 e1000_enter_82542_rst(adapter); |
|
2349 |
|
2350 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2351 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
|
2352 |
|
2353 e1000_rar_set(hw, hw->mac_addr, 0); |
|
2354 |
|
2355 /* With 82571 controllers, LAA may be overwritten (with the default) |
|
2356 * due to controller reset from the other port. */ |
|
2357 if (hw->mac_type == e1000_82571) { |
|
2358 /* activate the work around */ |
|
2359 hw->laa_is_present = 1; |
|
2360 |
|
2361 /* Hold a copy of the LAA in RAR[14] This is done so that |
|
2362 * between the time RAR[0] gets clobbered and the time it |
|
2363 * gets fixed (in e1000_watchdog), the actual LAA is in one |
|
2364 * of the RARs and no incoming packets directed to this port |
|
2365 * are dropped. Eventaully the LAA will be in RAR[0] and |
|
2366 * RAR[14] */ |
|
2367 e1000_rar_set(hw, hw->mac_addr, |
|
2368 E1000_RAR_ENTRIES - 1); |
|
2369 } |
|
2370 |
|
2371 if (hw->mac_type == e1000_82542_rev2_0) |
|
2372 e1000_leave_82542_rst(adapter); |
|
2373 |
|
2374 return 0; |
|
2375 } |
|
2376 |
|
2377 /** |
|
2378 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
|
2379 * @netdev: network interface device structure |
|
2380 * |
|
2381 * The set_rx_mode entry point is called whenever the unicast or multicast |
|
2382 * address lists or the network interface flags are updated. This routine is |
|
2383 * responsible for configuring the hardware for proper unicast, multicast, |
|
2384 * promiscuous mode, and all-multi behavior. |
|
2385 **/ |
|
2386 |
|
2387 static void e1000_set_rx_mode(struct net_device *netdev) |
|
2388 { |
|
2389 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2390 struct e1000_hw *hw = &adapter->hw; |
|
2391 struct netdev_hw_addr *ha; |
|
2392 bool use_uc = false; |
|
2393 struct dev_addr_list *mc_ptr; |
|
2394 u32 rctl; |
|
2395 u32 hash_value; |
|
2396 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2397 int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
|
2398 E1000_NUM_MTA_REGISTERS_ICH8LAN : |
|
2399 E1000_NUM_MTA_REGISTERS; |
|
2400 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
|
2401 |
|
2402 if (!mcarray) { |
|
2403 DPRINTK(PROBE, ERR, "memory allocation failed\n"); |
|
2404 return; |
|
2405 } |
|
2406 |
|
2407 if (hw->mac_type == e1000_ich8lan) |
|
2408 rar_entries = E1000_RAR_ENTRIES_ICH8LAN; |
|
2409 |
|
2410 /* reserve RAR[14] for LAA over-write work-around */ |
|
2411 if (hw->mac_type == e1000_82571) |
|
2412 rar_entries--; |
|
2413 |
|
2414 /* Check for Promiscuous and All Multicast modes */ |
|
2415 |
|
2416 rctl = er32(RCTL); |
|
2417 |
|
2418 if (netdev->flags & IFF_PROMISC) { |
|
2419 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2420 rctl &= ~E1000_RCTL_VFE; |
|
2421 } else { |
|
2422 if (netdev->flags & IFF_ALLMULTI) { |
|
2423 rctl |= E1000_RCTL_MPE; |
|
2424 } else { |
|
2425 rctl &= ~E1000_RCTL_MPE; |
|
2426 } |
|
2427 if (adapter->hw.mac_type != e1000_ich8lan) |
|
2428 rctl |= E1000_RCTL_VFE; |
|
2429 } |
|
2430 |
|
2431 if (netdev->uc.count > rar_entries - 1) { |
|
2432 rctl |= E1000_RCTL_UPE; |
|
2433 } else if (!(netdev->flags & IFF_PROMISC)) { |
|
2434 rctl &= ~E1000_RCTL_UPE; |
|
2435 use_uc = true; |
|
2436 } |
|
2437 |
|
2438 ew32(RCTL, rctl); |
|
2439 |
|
2440 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2441 |
|
2442 if (hw->mac_type == e1000_82542_rev2_0) |
|
2443 e1000_enter_82542_rst(adapter); |
|
2444 |
|
2445 /* load the first 14 addresses into the exact filters 1-14. Unicast |
|
2446 * addresses take precedence to avoid disabling unicast filtering |
|
2447 * when possible. |
|
2448 * |
|
2449 * RAR 0 is used for the station MAC adddress |
|
2450 * if there are not 14 addresses, go ahead and clear the filters |
|
2451 * -- with 82571 controllers only 0-13 entries are filled here |
|
2452 */ |
|
2453 i = 1; |
|
2454 if (use_uc) |
|
2455 list_for_each_entry(ha, &netdev->uc.list, list) { |
|
2456 if (i == rar_entries) |
|
2457 break; |
|
2458 e1000_rar_set(hw, ha->addr, i++); |
|
2459 } |
|
2460 |
|
2461 WARN_ON(i == rar_entries); |
|
2462 |
|
2463 mc_ptr = netdev->mc_list; |
|
2464 |
|
2465 for (; i < rar_entries; i++) { |
|
2466 if (mc_ptr) { |
|
2467 e1000_rar_set(hw, mc_ptr->da_addr, i); |
|
2468 mc_ptr = mc_ptr->next; |
|
2469 } else { |
|
2470 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2471 E1000_WRITE_FLUSH(); |
|
2472 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2473 E1000_WRITE_FLUSH(); |
|
2474 } |
|
2475 } |
|
2476 |
|
2477 /* load any remaining addresses into the hash table */ |
|
2478 |
|
2479 for (; mc_ptr; mc_ptr = mc_ptr->next) { |
|
2480 u32 hash_reg, hash_bit, mta; |
|
2481 hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr); |
|
2482 hash_reg = (hash_value >> 5) & 0x7F; |
|
2483 hash_bit = hash_value & 0x1F; |
|
2484 mta = (1 << hash_bit); |
|
2485 mcarray[hash_reg] |= mta; |
|
2486 } |
|
2487 |
|
2488 /* write the hash table completely, write from bottom to avoid |
|
2489 * both stupid write combining chipsets, and flushing each write */ |
|
2490 for (i = mta_reg_count - 1; i >= 0 ; i--) { |
|
2491 /* |
|
2492 * If we are on an 82544 has an errata where writing odd |
|
2493 * offsets overwrites the previous even offset, but writing |
|
2494 * backwards over the range solves the issue by always |
|
2495 * writing the odd offset first |
|
2496 */ |
|
2497 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); |
|
2498 } |
|
2499 E1000_WRITE_FLUSH(); |
|
2500 |
|
2501 if (hw->mac_type == e1000_82542_rev2_0) |
|
2502 e1000_leave_82542_rst(adapter); |
|
2503 |
|
2504 kfree(mcarray); |
|
2505 } |
|
2506 |
|
2507 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2508 * the phy */ |
|
2509 |
|
2510 static void e1000_update_phy_info(unsigned long data) |
|
2511 { |
|
2512 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2513 struct e1000_hw *hw = &adapter->hw; |
|
2514 e1000_phy_get_info(hw, &adapter->phy_info); |
|
2515 } |
|
2516 |
|
2517 /** |
|
2518 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2519 * @data: pointer to adapter cast into an unsigned long |
|
2520 **/ |
|
2521 |
|
2522 static void e1000_82547_tx_fifo_stall(unsigned long data) |
|
2523 { |
|
2524 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2525 struct e1000_hw *hw = &adapter->hw; |
|
2526 struct net_device *netdev = adapter->netdev; |
|
2527 u32 tctl; |
|
2528 |
|
2529 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2530 if ((er32(TDT) == er32(TDH)) && |
|
2531 (er32(TDFT) == er32(TDFH)) && |
|
2532 (er32(TDFTS) == er32(TDFHS))) { |
|
2533 tctl = er32(TCTL); |
|
2534 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
2535 ew32(TDFT, adapter->tx_head_addr); |
|
2536 ew32(TDFH, adapter->tx_head_addr); |
|
2537 ew32(TDFTS, adapter->tx_head_addr); |
|
2538 ew32(TDFHS, adapter->tx_head_addr); |
|
2539 ew32(TCTL, tctl); |
|
2540 E1000_WRITE_FLUSH(); |
|
2541 |
|
2542 adapter->tx_fifo_head = 0; |
|
2543 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2544 if (!adapter->ecdev) |
|
2545 netif_wake_queue(netdev); |
|
2546 } else { |
|
2547 if (!adapter->ecdev) |
|
2548 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2549 } |
|
2550 } |
|
2551 } |
|
2552 |
|
2553 /** |
|
2554 * e1000_watchdog - Timer Call-back |
|
2555 * @data: pointer to adapter cast into an unsigned long |
|
2556 **/ |
|
2557 static void e1000_watchdog(unsigned long data) |
|
2558 { |
|
2559 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2560 struct e1000_hw *hw = &adapter->hw; |
|
2561 struct net_device *netdev = adapter->netdev; |
|
2562 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2563 u32 link, tctl; |
|
2564 s32 ret_val; |
|
2565 |
|
2566 ret_val = e1000_check_for_link(hw); |
|
2567 if ((ret_val == E1000_ERR_PHY) && |
|
2568 (hw->phy_type == e1000_phy_igp_3) && |
|
2569 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { |
|
2570 /* See e1000_kumeran_lock_loss_workaround() */ |
|
2571 DPRINTK(LINK, INFO, |
|
2572 "Gigabit has been disabled, downgrading speed\n"); |
|
2573 } |
|
2574 |
|
2575 if (hw->mac_type == e1000_82573) { |
|
2576 e1000_enable_tx_pkt_filtering(hw); |
|
2577 if (adapter->mng_vlan_id != hw->mng_cookie.vlan_id) |
|
2578 e1000_update_mng_vlan(adapter); |
|
2579 } |
|
2580 |
|
2581 if ((hw->media_type == e1000_media_type_internal_serdes) && |
|
2582 !(er32(TXCW) & E1000_TXCW_ANE)) |
|
2583 link = !hw->serdes_link_down; |
|
2584 else |
|
2585 link = er32(STATUS) & E1000_STATUS_LU; |
|
2586 |
|
2587 if (link) { |
|
2588 if ( (adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
2589 || (!adapter->ecdev && !netif_carrier_ok(netdev)) ) { |
|
2590 u32 ctrl; |
|
2591 bool txb2b = true; |
|
2592 e1000_get_speed_and_duplex(hw, |
|
2593 &adapter->link_speed, |
|
2594 &adapter->link_duplex); |
|
2595 |
|
2596 ctrl = er32(CTRL); |
|
2597 printk(KERN_INFO "e1000: %s NIC Link is Up %d Mbps %s, " |
|
2598 "Flow Control: %s\n", |
|
2599 netdev->name, |
|
2600 adapter->link_speed, |
|
2601 adapter->link_duplex == FULL_DUPLEX ? |
|
2602 "Full Duplex" : "Half Duplex", |
|
2603 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2604 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2605 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2606 E1000_CTRL_TFCE) ? "TX" : "None" ))); |
|
2607 |
|
2608 /* tweak tx_queue_len according to speed/duplex |
|
2609 * and adjust the timeout factor */ |
|
2610 netdev->tx_queue_len = adapter->tx_queue_len; |
|
2611 adapter->tx_timeout_factor = 1; |
|
2612 switch (adapter->link_speed) { |
|
2613 case SPEED_10: |
|
2614 txb2b = false; |
|
2615 netdev->tx_queue_len = 10; |
|
2616 adapter->tx_timeout_factor = 8; |
|
2617 break; |
|
2618 case SPEED_100: |
|
2619 txb2b = false; |
|
2620 netdev->tx_queue_len = 100; |
|
2621 /* maybe add some timeout factor ? */ |
|
2622 break; |
|
2623 } |
|
2624 |
|
2625 if ((hw->mac_type == e1000_82571 || |
|
2626 hw->mac_type == e1000_82572) && |
|
2627 !txb2b) { |
|
2628 u32 tarc0; |
|
2629 tarc0 = er32(TARC0); |
|
2630 tarc0 &= ~(1 << 21); |
|
2631 ew32(TARC0, tarc0); |
|
2632 } |
|
2633 |
|
2634 /* disable TSO for pcie and 10/100 speeds, to avoid |
|
2635 * some hardware issues */ |
|
2636 if (!adapter->tso_force && |
|
2637 hw->bus_type == e1000_bus_type_pci_express){ |
|
2638 switch (adapter->link_speed) { |
|
2639 case SPEED_10: |
|
2640 case SPEED_100: |
|
2641 DPRINTK(PROBE,INFO, |
|
2642 "10/100 speed: disabling TSO\n"); |
|
2643 netdev->features &= ~NETIF_F_TSO; |
|
2644 netdev->features &= ~NETIF_F_TSO6; |
|
2645 break; |
|
2646 case SPEED_1000: |
|
2647 netdev->features |= NETIF_F_TSO; |
|
2648 netdev->features |= NETIF_F_TSO6; |
|
2649 break; |
|
2650 default: |
|
2651 /* oops */ |
|
2652 break; |
|
2653 } |
|
2654 } |
|
2655 |
|
2656 /* enable transmits in the hardware, need to do this |
|
2657 * after setting TARC0 */ |
|
2658 tctl = er32(TCTL); |
|
2659 tctl |= E1000_TCTL_EN; |
|
2660 ew32(TCTL, tctl); |
|
2661 |
|
2662 if (adapter->ecdev) { |
|
2663 ecdev_set_link(adapter->ecdev, 1); |
|
2664 } else { |
|
2665 netif_carrier_on(netdev); |
|
2666 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2667 } |
|
2668 adapter->smartspeed = 0; |
|
2669 } else { |
|
2670 /* make sure the receive unit is started */ |
|
2671 if (hw->rx_needs_kicking) { |
|
2672 u32 rctl = er32(RCTL); |
|
2673 ew32(RCTL, rctl | E1000_RCTL_EN); |
|
2674 } |
|
2675 } |
|
2676 } else { |
|
2677 if ( (adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
2678 || (!adapter->ecdev && netif_carrier_ok(netdev)) ) { |
|
2679 adapter->link_speed = 0; |
|
2680 adapter->link_duplex = 0; |
|
2681 printk(KERN_INFO "e1000: %s NIC Link is Down\n", |
|
2682 netdev->name); |
|
2683 if (adapter->ecdev) { |
|
2684 ecdev_set_link(adapter->ecdev, 0); |
|
2685 } else { |
|
2686 netif_carrier_off(netdev); |
|
2687 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2688 } |
|
2689 |
|
2690 /* 80003ES2LAN workaround-- |
|
2691 * For packet buffer work-around on link down event; |
|
2692 * disable receives in the ISR and |
|
2693 * reset device here in the watchdog |
|
2694 */ |
|
2695 if (hw->mac_type == e1000_80003es2lan) |
|
2696 /* reset device */ |
|
2697 schedule_work(&adapter->reset_task); |
|
2698 } |
|
2699 |
|
2700 e1000_smartspeed(adapter); |
|
2701 } |
|
2702 |
|
2703 e1000_update_stats(adapter); |
|
2704 |
|
2705 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2706 adapter->tpt_old = adapter->stats.tpt; |
|
2707 hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2708 adapter->colc_old = adapter->stats.colc; |
|
2709 |
|
2710 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2711 adapter->gorcl_old = adapter->stats.gorcl; |
|
2712 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2713 adapter->gotcl_old = adapter->stats.gotcl; |
|
2714 |
|
2715 e1000_update_adaptive(hw); |
|
2716 |
|
2717 if (!adapter->ecdev && !netif_carrier_ok(netdev)) { |
|
2718 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2719 /* We've lost link, so the controller stops DMA, |
|
2720 * but we've got queued Tx work that's never going |
|
2721 * to get done, so reset controller to flush Tx. |
|
2722 * (Do the reset outside of interrupt context). */ |
|
2723 adapter->tx_timeout_count++; |
|
2724 schedule_work(&adapter->reset_task); |
|
2725 /* return immediately since reset is imminent */ |
|
2726 return; |
|
2727 } |
|
2728 } |
|
2729 |
|
2730 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2731 ew32(ICS, E1000_ICS_RXDMT0); |
|
2732 |
|
2733 /* Force detection of hung controller every watchdog period */ |
|
2734 if (!adapter->ecdev) adapter->detect_tx_hung = true; |
|
2735 |
|
2736 /* With 82571 controllers, LAA may be overwritten due to controller |
|
2737 * reset from the other port. Set the appropriate LAA in RAR[0] */ |
|
2738 if (hw->mac_type == e1000_82571 && hw->laa_is_present) |
|
2739 e1000_rar_set(hw, hw->mac_addr, 0); |
|
2740 |
|
2741 /* Reset the timer */ |
|
2742 if (!adapter->ecdev) |
|
2743 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
|
2744 } |
|
2745 |
|
2746 enum latency_range { |
|
2747 lowest_latency = 0, |
|
2748 low_latency = 1, |
|
2749 bulk_latency = 2, |
|
2750 latency_invalid = 255 |
|
2751 }; |
|
2752 |
|
2753 /** |
|
2754 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2755 * Stores a new ITR value based on packets and byte |
|
2756 * counts during the last interrupt. The advantage of per interrupt |
|
2757 * computation is faster updates and more accurate ITR for the current |
|
2758 * traffic pattern. Constants in this function were computed |
|
2759 * based on theoretical maximum wire speed and thresholds were set based |
|
2760 * on testing data as well as attempting to minimize response time |
|
2761 * while increasing bulk throughput. |
|
2762 * this functionality is controlled by the InterruptThrottleRate module |
|
2763 * parameter (see e1000_param.c) |
|
2764 * @adapter: pointer to adapter |
|
2765 * @itr_setting: current adapter->itr |
|
2766 * @packets: the number of packets during this measurement interval |
|
2767 * @bytes: the number of bytes during this measurement interval |
|
2768 **/ |
|
2769 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2770 u16 itr_setting, int packets, int bytes) |
|
2771 { |
|
2772 unsigned int retval = itr_setting; |
|
2773 struct e1000_hw *hw = &adapter->hw; |
|
2774 |
|
2775 if (unlikely(hw->mac_type < e1000_82540)) |
|
2776 goto update_itr_done; |
|
2777 |
|
2778 if (packets == 0) |
|
2779 goto update_itr_done; |
|
2780 |
|
2781 switch (itr_setting) { |
|
2782 case lowest_latency: |
|
2783 /* jumbo frames get bulk treatment*/ |
|
2784 if (bytes/packets > 8000) |
|
2785 retval = bulk_latency; |
|
2786 else if ((packets < 5) && (bytes > 512)) |
|
2787 retval = low_latency; |
|
2788 break; |
|
2789 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2790 if (bytes > 10000) { |
|
2791 /* jumbo frames need bulk latency setting */ |
|
2792 if (bytes/packets > 8000) |
|
2793 retval = bulk_latency; |
|
2794 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2795 retval = bulk_latency; |
|
2796 else if ((packets > 35)) |
|
2797 retval = lowest_latency; |
|
2798 } else if (bytes/packets > 2000) |
|
2799 retval = bulk_latency; |
|
2800 else if (packets <= 2 && bytes < 512) |
|
2801 retval = lowest_latency; |
|
2802 break; |
|
2803 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2804 if (bytes > 25000) { |
|
2805 if (packets > 35) |
|
2806 retval = low_latency; |
|
2807 } else if (bytes < 6000) { |
|
2808 retval = low_latency; |
|
2809 } |
|
2810 break; |
|
2811 } |
|
2812 |
|
2813 update_itr_done: |
|
2814 return retval; |
|
2815 } |
|
2816 |
|
2817 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2818 { |
|
2819 struct e1000_hw *hw = &adapter->hw; |
|
2820 u16 current_itr; |
|
2821 u32 new_itr = adapter->itr; |
|
2822 |
|
2823 if (unlikely(hw->mac_type < e1000_82540)) |
|
2824 return; |
|
2825 |
|
2826 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2827 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2828 current_itr = 0; |
|
2829 new_itr = 4000; |
|
2830 goto set_itr_now; |
|
2831 } |
|
2832 |
|
2833 adapter->tx_itr = e1000_update_itr(adapter, |
|
2834 adapter->tx_itr, |
|
2835 adapter->total_tx_packets, |
|
2836 adapter->total_tx_bytes); |
|
2837 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2838 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2839 adapter->tx_itr = low_latency; |
|
2840 |
|
2841 adapter->rx_itr = e1000_update_itr(adapter, |
|
2842 adapter->rx_itr, |
|
2843 adapter->total_rx_packets, |
|
2844 adapter->total_rx_bytes); |
|
2845 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2846 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2847 adapter->rx_itr = low_latency; |
|
2848 |
|
2849 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2850 |
|
2851 switch (current_itr) { |
|
2852 /* counts and packets in update_itr are dependent on these numbers */ |
|
2853 case lowest_latency: |
|
2854 new_itr = 70000; |
|
2855 break; |
|
2856 case low_latency: |
|
2857 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2858 break; |
|
2859 case bulk_latency: |
|
2860 new_itr = 4000; |
|
2861 break; |
|
2862 default: |
|
2863 break; |
|
2864 } |
|
2865 |
|
2866 set_itr_now: |
|
2867 if (new_itr != adapter->itr) { |
|
2868 /* this attempts to bias the interrupt rate towards Bulk |
|
2869 * by adding intermediate steps when interrupt rate is |
|
2870 * increasing */ |
|
2871 new_itr = new_itr > adapter->itr ? |
|
2872 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2873 new_itr; |
|
2874 adapter->itr = new_itr; |
|
2875 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2876 } |
|
2877 |
|
2878 return; |
|
2879 } |
|
2880 |
|
2881 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2882 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2883 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2884 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2885 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2886 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2887 |
|
2888 static int e1000_tso(struct e1000_adapter *adapter, |
|
2889 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2890 { |
|
2891 struct e1000_context_desc *context_desc; |
|
2892 struct e1000_buffer *buffer_info; |
|
2893 unsigned int i; |
|
2894 u32 cmd_length = 0; |
|
2895 u16 ipcse = 0, tucse, mss; |
|
2896 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
2897 int err; |
|
2898 |
|
2899 if (skb_is_gso(skb)) { |
|
2900 if (skb_header_cloned(skb)) { |
|
2901 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2902 if (err) |
|
2903 return err; |
|
2904 } |
|
2905 |
|
2906 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2907 mss = skb_shinfo(skb)->gso_size; |
|
2908 if (skb->protocol == htons(ETH_P_IP)) { |
|
2909 struct iphdr *iph = ip_hdr(skb); |
|
2910 iph->tot_len = 0; |
|
2911 iph->check = 0; |
|
2912 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2913 iph->daddr, 0, |
|
2914 IPPROTO_TCP, |
|
2915 0); |
|
2916 cmd_length = E1000_TXD_CMD_IP; |
|
2917 ipcse = skb_transport_offset(skb) - 1; |
|
2918 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2919 ipv6_hdr(skb)->payload_len = 0; |
|
2920 tcp_hdr(skb)->check = |
|
2921 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2922 &ipv6_hdr(skb)->daddr, |
|
2923 0, IPPROTO_TCP, 0); |
|
2924 ipcse = 0; |
|
2925 } |
|
2926 ipcss = skb_network_offset(skb); |
|
2927 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2928 tucss = skb_transport_offset(skb); |
|
2929 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2930 tucse = 0; |
|
2931 |
|
2932 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2933 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2934 |
|
2935 i = tx_ring->next_to_use; |
|
2936 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2937 buffer_info = &tx_ring->buffer_info[i]; |
|
2938 |
|
2939 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2940 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2941 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2942 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2943 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2944 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2945 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2946 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2947 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2948 |
|
2949 buffer_info->time_stamp = jiffies; |
|
2950 buffer_info->next_to_watch = i; |
|
2951 |
|
2952 if (++i == tx_ring->count) i = 0; |
|
2953 tx_ring->next_to_use = i; |
|
2954 |
|
2955 return true; |
|
2956 } |
|
2957 return false; |
|
2958 } |
|
2959 |
|
2960 static bool e1000_tx_csum(struct e1000_adapter *adapter, |
|
2961 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2962 { |
|
2963 struct e1000_context_desc *context_desc; |
|
2964 struct e1000_buffer *buffer_info; |
|
2965 unsigned int i; |
|
2966 u8 css; |
|
2967 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
2968 |
|
2969 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
2970 return false; |
|
2971 |
|
2972 switch (skb->protocol) { |
|
2973 case cpu_to_be16(ETH_P_IP): |
|
2974 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
2975 cmd_len |= E1000_TXD_CMD_TCP; |
|
2976 break; |
|
2977 case cpu_to_be16(ETH_P_IPV6): |
|
2978 /* XXX not handling all IPV6 headers */ |
|
2979 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
2980 cmd_len |= E1000_TXD_CMD_TCP; |
|
2981 break; |
|
2982 default: |
|
2983 if (unlikely(net_ratelimit())) |
|
2984 DPRINTK(DRV, WARNING, |
|
2985 "checksum_partial proto=%x!\n", skb->protocol); |
|
2986 break; |
|
2987 } |
|
2988 |
|
2989 css = skb_transport_offset(skb); |
|
2990 |
|
2991 i = tx_ring->next_to_use; |
|
2992 buffer_info = &tx_ring->buffer_info[i]; |
|
2993 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2994 |
|
2995 context_desc->lower_setup.ip_config = 0; |
|
2996 context_desc->upper_setup.tcp_fields.tucss = css; |
|
2997 context_desc->upper_setup.tcp_fields.tucso = |
|
2998 css + skb->csum_offset; |
|
2999 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
3000 context_desc->tcp_seg_setup.data = 0; |
|
3001 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
3002 |
|
3003 buffer_info->time_stamp = jiffies; |
|
3004 buffer_info->next_to_watch = i; |
|
3005 |
|
3006 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3007 tx_ring->next_to_use = i; |
|
3008 |
|
3009 return true; |
|
3010 } |
|
3011 |
|
3012 #define E1000_MAX_TXD_PWR 12 |
|
3013 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
3014 |
|
3015 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
3016 struct e1000_tx_ring *tx_ring, |
|
3017 struct sk_buff *skb, unsigned int first, |
|
3018 unsigned int max_per_txd, unsigned int nr_frags, |
|
3019 unsigned int mss) |
|
3020 { |
|
3021 struct e1000_hw *hw = &adapter->hw; |
|
3022 struct e1000_buffer *buffer_info; |
|
3023 unsigned int len = skb_headlen(skb); |
|
3024 unsigned int offset, size, count = 0, i; |
|
3025 unsigned int f; |
|
3026 dma_addr_t *map; |
|
3027 |
|
3028 i = tx_ring->next_to_use; |
|
3029 |
|
3030 if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) { |
|
3031 dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); |
|
3032 return 0; |
|
3033 } |
|
3034 |
|
3035 map = skb_shinfo(skb)->dma_maps; |
|
3036 offset = 0; |
|
3037 |
|
3038 while (len) { |
|
3039 buffer_info = &tx_ring->buffer_info[i]; |
|
3040 size = min(len, max_per_txd); |
|
3041 /* Workaround for Controller erratum -- |
|
3042 * descriptor for non-tso packet in a linear SKB that follows a |
|
3043 * tso gets written back prematurely before the data is fully |
|
3044 * DMA'd to the controller */ |
|
3045 if (!skb->data_len && tx_ring->last_tx_tso && |
|
3046 !skb_is_gso(skb)) { |
|
3047 tx_ring->last_tx_tso = 0; |
|
3048 size -= 4; |
|
3049 } |
|
3050 |
|
3051 /* Workaround for premature desc write-backs |
|
3052 * in TSO mode. Append 4-byte sentinel desc */ |
|
3053 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
3054 size -= 4; |
|
3055 /* work-around for errata 10 and it applies |
|
3056 * to all controllers in PCI-X mode |
|
3057 * The fix is to make sure that the first descriptor of a |
|
3058 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
3059 */ |
|
3060 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
3061 (size > 2015) && count == 0)) |
|
3062 size = 2015; |
|
3063 |
|
3064 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
3065 * terminating buffers within evenly-aligned dwords. */ |
|
3066 if (unlikely(adapter->pcix_82544 && |
|
3067 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
3068 size > 4)) |
|
3069 size -= 4; |
|
3070 |
|
3071 buffer_info->length = size; |
|
3072 buffer_info->dma = skb_shinfo(skb)->dma_head + offset; |
|
3073 buffer_info->time_stamp = jiffies; |
|
3074 buffer_info->next_to_watch = i; |
|
3075 |
|
3076 len -= size; |
|
3077 offset += size; |
|
3078 count++; |
|
3079 if (len) { |
|
3080 i++; |
|
3081 if (unlikely(i == tx_ring->count)) |
|
3082 i = 0; |
|
3083 } |
|
3084 } |
|
3085 |
|
3086 for (f = 0; f < nr_frags; f++) { |
|
3087 struct skb_frag_struct *frag; |
|
3088 |
|
3089 frag = &skb_shinfo(skb)->frags[f]; |
|
3090 len = frag->size; |
|
3091 offset = 0; |
|
3092 |
|
3093 while (len) { |
|
3094 i++; |
|
3095 if (unlikely(i == tx_ring->count)) |
|
3096 i = 0; |
|
3097 |
|
3098 buffer_info = &tx_ring->buffer_info[i]; |
|
3099 size = min(len, max_per_txd); |
|
3100 /* Workaround for premature desc write-backs |
|
3101 * in TSO mode. Append 4-byte sentinel desc */ |
|
3102 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
3103 size -= 4; |
|
3104 /* Workaround for potential 82544 hang in PCI-X. |
|
3105 * Avoid terminating buffers within evenly-aligned |
|
3106 * dwords. */ |
|
3107 if (unlikely(adapter->pcix_82544 && |
|
3108 !((unsigned long)(frag->page+offset+size-1) & 4) && |
|
3109 size > 4)) |
|
3110 size -= 4; |
|
3111 |
|
3112 buffer_info->length = size; |
|
3113 buffer_info->dma = map[f] + offset; |
|
3114 buffer_info->time_stamp = jiffies; |
|
3115 buffer_info->next_to_watch = i; |
|
3116 |
|
3117 len -= size; |
|
3118 offset += size; |
|
3119 count++; |
|
3120 } |
|
3121 } |
|
3122 |
|
3123 tx_ring->buffer_info[i].skb = skb; |
|
3124 tx_ring->buffer_info[first].next_to_watch = i; |
|
3125 |
|
3126 return count; |
|
3127 } |
|
3128 |
|
3129 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
3130 struct e1000_tx_ring *tx_ring, int tx_flags, |
|
3131 int count) |
|
3132 { |
|
3133 struct e1000_hw *hw = &adapter->hw; |
|
3134 struct e1000_tx_desc *tx_desc = NULL; |
|
3135 struct e1000_buffer *buffer_info; |
|
3136 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
3137 unsigned int i; |
|
3138 |
|
3139 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
3140 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
3141 E1000_TXD_CMD_TSE; |
|
3142 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3143 |
|
3144 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
3145 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
3146 } |
|
3147 |
|
3148 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
3149 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
3150 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3151 } |
|
3152 |
|
3153 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
3154 txd_lower |= E1000_TXD_CMD_VLE; |
|
3155 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
3156 } |
|
3157 |
|
3158 i = tx_ring->next_to_use; |
|
3159 |
|
3160 while (count--) { |
|
3161 buffer_info = &tx_ring->buffer_info[i]; |
|
3162 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3163 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
3164 tx_desc->lower.data = |
|
3165 cpu_to_le32(txd_lower | buffer_info->length); |
|
3166 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
3167 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3168 } |
|
3169 |
|
3170 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
3171 |
|
3172 /* Force memory writes to complete before letting h/w |
|
3173 * know there are new descriptors to fetch. (Only |
|
3174 * applicable for weak-ordered memory model archs, |
|
3175 * such as IA-64). */ |
|
3176 wmb(); |
|
3177 |
|
3178 tx_ring->next_to_use = i; |
|
3179 writel(i, hw->hw_addr + tx_ring->tdt); |
|
3180 /* we need this if more than one processor can write to our tail |
|
3181 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
3182 mmiowb(); |
|
3183 } |
|
3184 |
|
3185 /** |
|
3186 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
3187 * The workaround is to avoid queuing a large packet that would span |
|
3188 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
3189 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
3190 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
3191 * to the beginning of the Tx FIFO. |
|
3192 **/ |
|
3193 |
|
3194 #define E1000_FIFO_HDR 0x10 |
|
3195 #define E1000_82547_PAD_LEN 0x3E0 |
|
3196 |
|
3197 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
|
3198 struct sk_buff *skb) |
|
3199 { |
|
3200 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
3201 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
3202 |
|
3203 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
3204 |
|
3205 if (adapter->link_duplex != HALF_DUPLEX) |
|
3206 goto no_fifo_stall_required; |
|
3207 |
|
3208 if (atomic_read(&adapter->tx_fifo_stall)) |
|
3209 return 1; |
|
3210 |
|
3211 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
3212 atomic_set(&adapter->tx_fifo_stall, 1); |
|
3213 return 1; |
|
3214 } |
|
3215 |
|
3216 no_fifo_stall_required: |
|
3217 adapter->tx_fifo_head += skb_fifo_len; |
|
3218 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
3219 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
3220 return 0; |
|
3221 } |
|
3222 |
|
3223 #define MINIMUM_DHCP_PACKET_SIZE 282 |
|
3224 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
|
3225 struct sk_buff *skb) |
|
3226 { |
|
3227 struct e1000_hw *hw = &adapter->hw; |
|
3228 u16 length, offset; |
|
3229 if (vlan_tx_tag_present(skb)) { |
|
3230 if (!((vlan_tx_tag_get(skb) == hw->mng_cookie.vlan_id) && |
|
3231 ( hw->mng_cookie.status & |
|
3232 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) |
|
3233 return 0; |
|
3234 } |
|
3235 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
|
3236 struct ethhdr *eth = (struct ethhdr *)skb->data; |
|
3237 if ((htons(ETH_P_IP) == eth->h_proto)) { |
|
3238 const struct iphdr *ip = |
|
3239 (struct iphdr *)((u8 *)skb->data+14); |
|
3240 if (IPPROTO_UDP == ip->protocol) { |
|
3241 struct udphdr *udp = |
|
3242 (struct udphdr *)((u8 *)ip + |
|
3243 (ip->ihl << 2)); |
|
3244 if (ntohs(udp->dest) == 67) { |
|
3245 offset = (u8 *)udp + 8 - skb->data; |
|
3246 length = skb->len - offset; |
|
3247 |
|
3248 return e1000_mng_write_dhcp_info(hw, |
|
3249 (u8 *)udp + 8, |
|
3250 length); |
|
3251 } |
|
3252 } |
|
3253 } |
|
3254 } |
|
3255 return 0; |
|
3256 } |
|
3257 |
|
3258 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
3259 { |
|
3260 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3261 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
3262 |
|
3263 netif_stop_queue(netdev); |
|
3264 /* Herbert's original patch had: |
|
3265 * smp_mb__after_netif_stop_queue(); |
|
3266 * but since that doesn't exist yet, just open code it. */ |
|
3267 smp_mb(); |
|
3268 |
|
3269 /* We need to check again in a case another CPU has just |
|
3270 * made room available. */ |
|
3271 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
3272 return -EBUSY; |
|
3273 |
|
3274 /* A reprieve! */ |
|
3275 netif_start_queue(netdev); |
|
3276 ++adapter->restart_queue; |
|
3277 return 0; |
|
3278 } |
|
3279 |
|
3280 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
3281 struct e1000_tx_ring *tx_ring, int size) |
|
3282 { |
|
3283 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
3284 return 0; |
|
3285 return __e1000_maybe_stop_tx(netdev, size); |
|
3286 } |
|
3287 |
|
3288 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
3289 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
|
3290 { |
|
3291 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3292 struct e1000_hw *hw = &adapter->hw; |
|
3293 struct e1000_tx_ring *tx_ring; |
|
3294 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
3295 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
3296 unsigned int tx_flags = 0; |
|
3297 unsigned int len = skb->len - skb->data_len; |
|
3298 unsigned int nr_frags = 0; |
|
3299 unsigned int mss = 0; |
|
3300 int count = 0; |
|
3301 int tso; |
|
3302 unsigned int f; |
|
3303 |
|
3304 /* This goes back to the question of how to logically map a tx queue |
|
3305 * to a flow. Right now, performance is impacted slightly negatively |
|
3306 * if using multiple tx queues. If the stack breaks away from a |
|
3307 * single qdisc implementation, we can look at this again. */ |
|
3308 tx_ring = adapter->tx_ring; |
|
3309 |
|
3310 if (unlikely(skb->len <= 0)) { |
|
3311 if (!adapter->ecdev) |
|
3312 dev_kfree_skb_any(skb); |
|
3313 return NETDEV_TX_OK; |
|
3314 } |
|
3315 |
|
3316 /* 82571 and newer doesn't need the workaround that limited descriptor |
|
3317 * length to 4kB */ |
|
3318 if (hw->mac_type >= e1000_82571) |
|
3319 max_per_txd = 8192; |
|
3320 |
|
3321 mss = skb_shinfo(skb)->gso_size; |
|
3322 /* The controller does a simple calculation to |
|
3323 * make sure there is enough room in the FIFO before |
|
3324 * initiating the DMA for each buffer. The calc is: |
|
3325 * 4 = ceil(buffer len/mss). To make sure we don't |
|
3326 * overrun the FIFO, adjust the max buffer len if mss |
|
3327 * drops. */ |
|
3328 if (mss) { |
|
3329 u8 hdr_len; |
|
3330 max_per_txd = min(mss << 2, max_per_txd); |
|
3331 max_txd_pwr = fls(max_per_txd) - 1; |
|
3332 |
|
3333 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
|
3334 * points to just header, pull a few bytes of payload from |
|
3335 * frags into skb->data */ |
|
3336 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
3337 if (skb->data_len && hdr_len == len) { |
|
3338 switch (hw->mac_type) { |
|
3339 unsigned int pull_size; |
|
3340 case e1000_82544: |
|
3341 /* Make sure we have room to chop off 4 bytes, |
|
3342 * and that the end alignment will work out to |
|
3343 * this hardware's requirements |
|
3344 * NOTE: this is a TSO only workaround |
|
3345 * if end byte alignment not correct move us |
|
3346 * into the next dword */ |
|
3347 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
3348 break; |
|
3349 /* fall through */ |
|
3350 case e1000_82571: |
|
3351 case e1000_82572: |
|
3352 case e1000_82573: |
|
3353 case e1000_ich8lan: |
|
3354 pull_size = min((unsigned int)4, skb->data_len); |
|
3355 if (!__pskb_pull_tail(skb, pull_size)) { |
|
3356 DPRINTK(DRV, ERR, |
|
3357 "__pskb_pull_tail failed.\n"); |
|
3358 dev_kfree_skb_any(skb); |
|
3359 return NETDEV_TX_OK; |
|
3360 } |
|
3361 len = skb->len - skb->data_len; |
|
3362 break; |
|
3363 default: |
|
3364 /* do nothing */ |
|
3365 break; |
|
3366 } |
|
3367 } |
|
3368 } |
|
3369 |
|
3370 /* reserve a descriptor for the offload context */ |
|
3371 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
3372 count++; |
|
3373 count++; |
|
3374 |
|
3375 /* Controller Erratum workaround */ |
|
3376 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
3377 count++; |
|
3378 |
|
3379 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
3380 |
|
3381 if (adapter->pcix_82544) |
|
3382 count++; |
|
3383 |
|
3384 /* work-around for errata 10 and it applies to all controllers |
|
3385 * in PCI-X mode, so add one more descriptor to the count |
|
3386 */ |
|
3387 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
3388 (len > 2015))) |
|
3389 count++; |
|
3390 |
|
3391 nr_frags = skb_shinfo(skb)->nr_frags; |
|
3392 for (f = 0; f < nr_frags; f++) |
|
3393 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3394 max_txd_pwr); |
|
3395 if (adapter->pcix_82544) |
|
3396 count += nr_frags; |
|
3397 |
|
3398 |
|
3399 if (hw->tx_pkt_filtering && |
|
3400 (hw->mac_type == e1000_82573)) |
|
3401 e1000_transfer_dhcp_info(adapter, skb); |
|
3402 |
|
3403 /* need: count + 2 desc gap to keep tail from touching |
|
3404 * head, otherwise try next time */ |
|
3405 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
|
3406 return NETDEV_TX_BUSY; |
|
3407 |
|
3408 if (unlikely(hw->mac_type == e1000_82547)) { |
|
3409 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3410 if (!adapter->ecdev) { |
|
3411 netif_stop_queue(netdev); |
|
3412 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
3413 } |
|
3414 return NETDEV_TX_BUSY; |
|
3415 } |
|
3416 } |
|
3417 |
|
3418 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
|
3419 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3420 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3421 } |
|
3422 |
|
3423 first = tx_ring->next_to_use; |
|
3424 |
|
3425 tso = e1000_tso(adapter, tx_ring, skb); |
|
3426 if (tso < 0) { |
|
3427 if (!adapter->ecdev) { |
|
3428 dev_kfree_skb_any(skb); |
|
3429 } |
|
3430 return NETDEV_TX_OK; |
|
3431 } |
|
3432 |
|
3433 if (likely(tso)) { |
|
3434 tx_ring->last_tx_tso = 1; |
|
3435 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3436 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3437 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3438 |
|
3439 /* Old method was to assume IPv4 packet by default if TSO was enabled. |
|
3440 * 82571 hardware supports TSO capabilities for IPv6 as well... |
|
3441 * no longer assume, we must. */ |
|
3442 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3443 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3444 |
|
3445 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
|
3446 nr_frags, mss); |
|
3447 |
|
3448 if (count) { |
|
3449 e1000_tx_queue(adapter, tx_ring, tx_flags, count); |
|
3450 if (!adapter->ecdev) { |
|
3451 /* Make sure there is space in the ring for the next send. */ |
|
3452 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3453 } |
|
3454 |
|
3455 } else { |
|
3456 if (!adapter->ecdev) dev_kfree_skb_any(skb); |
|
3457 tx_ring->buffer_info[first].time_stamp = 0; |
|
3458 tx_ring->next_to_use = first; |
|
3459 } |
|
3460 |
|
3461 return NETDEV_TX_OK; |
|
3462 } |
|
3463 |
|
3464 /** |
|
3465 * e1000_tx_timeout - Respond to a Tx Hang |
|
3466 * @netdev: network interface device structure |
|
3467 **/ |
|
3468 |
|
3469 static void e1000_tx_timeout(struct net_device *netdev) |
|
3470 { |
|
3471 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3472 |
|
3473 /* Do the reset outside of interrupt context */ |
|
3474 adapter->tx_timeout_count++; |
|
3475 schedule_work(&adapter->reset_task); |
|
3476 } |
|
3477 |
|
3478 static void e1000_reset_task(struct work_struct *work) |
|
3479 { |
|
3480 struct e1000_adapter *adapter = |
|
3481 container_of(work, struct e1000_adapter, reset_task); |
|
3482 |
|
3483 e1000_reinit_locked(adapter); |
|
3484 } |
|
3485 |
|
3486 /** |
|
3487 * e1000_get_stats - Get System Network Statistics |
|
3488 * @netdev: network interface device structure |
|
3489 * |
|
3490 * Returns the address of the device statistics structure. |
|
3491 * The statistics are actually updated from the timer callback. |
|
3492 **/ |
|
3493 |
|
3494 static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
|
3495 { |
|
3496 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3497 |
|
3498 /* only return the current stats */ |
|
3499 return &adapter->net_stats; |
|
3500 } |
|
3501 |
|
3502 /** |
|
3503 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3504 * @netdev: network interface device structure |
|
3505 * @new_mtu: new value for maximum frame size |
|
3506 * |
|
3507 * Returns 0 on success, negative on failure |
|
3508 **/ |
|
3509 |
|
3510 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3511 { |
|
3512 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3513 struct e1000_hw *hw = &adapter->hw; |
|
3514 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3515 u16 eeprom_data = 0; |
|
3516 |
|
3517 if (adapter->ecdev) |
|
3518 return -EBUSY; |
|
3519 |
|
3520 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3521 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3522 DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); |
|
3523 return -EINVAL; |
|
3524 } |
|
3525 |
|
3526 /* Adapter-specific max frame size limits. */ |
|
3527 switch (hw->mac_type) { |
|
3528 case e1000_undefined ... e1000_82542_rev2_1: |
|
3529 case e1000_ich8lan: |
|
3530 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
3531 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); |
|
3532 return -EINVAL; |
|
3533 } |
|
3534 break; |
|
3535 case e1000_82573: |
|
3536 /* Jumbo Frames not supported if: |
|
3537 * - this is not an 82573L device |
|
3538 * - ASPM is enabled in any way (0x1A bits 3:2) */ |
|
3539 e1000_read_eeprom(hw, EEPROM_INIT_3GIO_3, 1, |
|
3540 &eeprom_data); |
|
3541 if ((hw->device_id != E1000_DEV_ID_82573L) || |
|
3542 (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { |
|
3543 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
|
3544 DPRINTK(PROBE, ERR, |
|
3545 "Jumbo Frames not supported.\n"); |
|
3546 return -EINVAL; |
|
3547 } |
|
3548 break; |
|
3549 } |
|
3550 /* ERT will be enabled later to enable wire speed receives */ |
|
3551 |
|
3552 /* fall through to get support */ |
|
3553 case e1000_82571: |
|
3554 case e1000_82572: |
|
3555 case e1000_80003es2lan: |
|
3556 #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
|
3557 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
|
3558 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); |
|
3559 return -EINVAL; |
|
3560 } |
|
3561 break; |
|
3562 default: |
|
3563 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3564 break; |
|
3565 } |
|
3566 |
|
3567 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3568 * means we reserve 2 more, this pushes us to allocate from the next |
|
3569 * larger slab size |
|
3570 * i.e. RXBUFFER_2048 --> size-4096 slab */ |
|
3571 |
|
3572 if (max_frame <= E1000_RXBUFFER_256) |
|
3573 adapter->rx_buffer_len = E1000_RXBUFFER_256; |
|
3574 else if (max_frame <= E1000_RXBUFFER_512) |
|
3575 adapter->rx_buffer_len = E1000_RXBUFFER_512; |
|
3576 else if (max_frame <= E1000_RXBUFFER_1024) |
|
3577 adapter->rx_buffer_len = E1000_RXBUFFER_1024; |
|
3578 else if (max_frame <= E1000_RXBUFFER_2048) |
|
3579 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3580 else if (max_frame <= E1000_RXBUFFER_4096) |
|
3581 adapter->rx_buffer_len = E1000_RXBUFFER_4096; |
|
3582 else if (max_frame <= E1000_RXBUFFER_8192) |
|
3583 adapter->rx_buffer_len = E1000_RXBUFFER_8192; |
|
3584 else if (max_frame <= E1000_RXBUFFER_16384) |
|
3585 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3586 |
|
3587 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3588 if (!hw->tbi_compatibility_on && |
|
3589 ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || |
|
3590 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3591 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3592 |
|
3593 netdev->mtu = new_mtu; |
|
3594 hw->max_frame_size = max_frame; |
|
3595 |
|
3596 if (netif_running(netdev)) |
|
3597 e1000_reinit_locked(adapter); |
|
3598 |
|
3599 return 0; |
|
3600 } |
|
3601 |
|
3602 /** |
|
3603 * e1000_update_stats - Update the board statistics counters |
|
3604 * @adapter: board private structure |
|
3605 **/ |
|
3606 |
|
3607 void e1000_update_stats(struct e1000_adapter *adapter) |
|
3608 { |
|
3609 struct e1000_hw *hw = &adapter->hw; |
|
3610 struct pci_dev *pdev = adapter->pdev; |
|
3611 unsigned long flags = 0; |
|
3612 u16 phy_tmp; |
|
3613 |
|
3614 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3615 |
|
3616 /* |
|
3617 * Prevent stats update while adapter is being reset, or if the pci |
|
3618 * connection is down. |
|
3619 */ |
|
3620 if (adapter->link_speed == 0) |
|
3621 return; |
|
3622 if (pci_channel_offline(pdev)) |
|
3623 return; |
|
3624 |
|
3625 if (!adapter->ecdev) |
|
3626 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3627 |
|
3628 /* these counters are modified from e1000_tbi_adjust_stats, |
|
3629 * called from the interrupt context, so they must only |
|
3630 * be written while holding adapter->stats_lock |
|
3631 */ |
|
3632 |
|
3633 adapter->stats.crcerrs += er32(CRCERRS); |
|
3634 adapter->stats.gprc += er32(GPRC); |
|
3635 adapter->stats.gorcl += er32(GORCL); |
|
3636 adapter->stats.gorch += er32(GORCH); |
|
3637 adapter->stats.bprc += er32(BPRC); |
|
3638 adapter->stats.mprc += er32(MPRC); |
|
3639 adapter->stats.roc += er32(ROC); |
|
3640 |
|
3641 if (hw->mac_type != e1000_ich8lan) { |
|
3642 adapter->stats.prc64 += er32(PRC64); |
|
3643 adapter->stats.prc127 += er32(PRC127); |
|
3644 adapter->stats.prc255 += er32(PRC255); |
|
3645 adapter->stats.prc511 += er32(PRC511); |
|
3646 adapter->stats.prc1023 += er32(PRC1023); |
|
3647 adapter->stats.prc1522 += er32(PRC1522); |
|
3648 } |
|
3649 |
|
3650 adapter->stats.symerrs += er32(SYMERRS); |
|
3651 adapter->stats.mpc += er32(MPC); |
|
3652 adapter->stats.scc += er32(SCC); |
|
3653 adapter->stats.ecol += er32(ECOL); |
|
3654 adapter->stats.mcc += er32(MCC); |
|
3655 adapter->stats.latecol += er32(LATECOL); |
|
3656 adapter->stats.dc += er32(DC); |
|
3657 adapter->stats.sec += er32(SEC); |
|
3658 adapter->stats.rlec += er32(RLEC); |
|
3659 adapter->stats.xonrxc += er32(XONRXC); |
|
3660 adapter->stats.xontxc += er32(XONTXC); |
|
3661 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
3662 adapter->stats.xofftxc += er32(XOFFTXC); |
|
3663 adapter->stats.fcruc += er32(FCRUC); |
|
3664 adapter->stats.gptc += er32(GPTC); |
|
3665 adapter->stats.gotcl += er32(GOTCL); |
|
3666 adapter->stats.gotch += er32(GOTCH); |
|
3667 adapter->stats.rnbc += er32(RNBC); |
|
3668 adapter->stats.ruc += er32(RUC); |
|
3669 adapter->stats.rfc += er32(RFC); |
|
3670 adapter->stats.rjc += er32(RJC); |
|
3671 adapter->stats.torl += er32(TORL); |
|
3672 adapter->stats.torh += er32(TORH); |
|
3673 adapter->stats.totl += er32(TOTL); |
|
3674 adapter->stats.toth += er32(TOTH); |
|
3675 adapter->stats.tpr += er32(TPR); |
|
3676 |
|
3677 if (hw->mac_type != e1000_ich8lan) { |
|
3678 adapter->stats.ptc64 += er32(PTC64); |
|
3679 adapter->stats.ptc127 += er32(PTC127); |
|
3680 adapter->stats.ptc255 += er32(PTC255); |
|
3681 adapter->stats.ptc511 += er32(PTC511); |
|
3682 adapter->stats.ptc1023 += er32(PTC1023); |
|
3683 adapter->stats.ptc1522 += er32(PTC1522); |
|
3684 } |
|
3685 |
|
3686 adapter->stats.mptc += er32(MPTC); |
|
3687 adapter->stats.bptc += er32(BPTC); |
|
3688 |
|
3689 /* used for adaptive IFS */ |
|
3690 |
|
3691 hw->tx_packet_delta = er32(TPT); |
|
3692 adapter->stats.tpt += hw->tx_packet_delta; |
|
3693 hw->collision_delta = er32(COLC); |
|
3694 adapter->stats.colc += hw->collision_delta; |
|
3695 |
|
3696 if (hw->mac_type >= e1000_82543) { |
|
3697 adapter->stats.algnerrc += er32(ALGNERRC); |
|
3698 adapter->stats.rxerrc += er32(RXERRC); |
|
3699 adapter->stats.tncrs += er32(TNCRS); |
|
3700 adapter->stats.cexterr += er32(CEXTERR); |
|
3701 adapter->stats.tsctc += er32(TSCTC); |
|
3702 adapter->stats.tsctfc += er32(TSCTFC); |
|
3703 } |
|
3704 if (hw->mac_type > e1000_82547_rev_2) { |
|
3705 adapter->stats.iac += er32(IAC); |
|
3706 adapter->stats.icrxoc += er32(ICRXOC); |
|
3707 |
|
3708 if (hw->mac_type != e1000_ich8lan) { |
|
3709 adapter->stats.icrxptc += er32(ICRXPTC); |
|
3710 adapter->stats.icrxatc += er32(ICRXATC); |
|
3711 adapter->stats.ictxptc += er32(ICTXPTC); |
|
3712 adapter->stats.ictxatc += er32(ICTXATC); |
|
3713 adapter->stats.ictxqec += er32(ICTXQEC); |
|
3714 adapter->stats.ictxqmtc += er32(ICTXQMTC); |
|
3715 adapter->stats.icrxdmtc += er32(ICRXDMTC); |
|
3716 } |
|
3717 } |
|
3718 |
|
3719 /* Fill out the OS statistics structure */ |
|
3720 adapter->net_stats.multicast = adapter->stats.mprc; |
|
3721 adapter->net_stats.collisions = adapter->stats.colc; |
|
3722 |
|
3723 /* Rx Errors */ |
|
3724 |
|
3725 /* RLEC on some newer hardware can be incorrect so build |
|
3726 * our own version based on RUC and ROC */ |
|
3727 adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
|
3728 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3729 adapter->stats.ruc + adapter->stats.roc + |
|
3730 adapter->stats.cexterr; |
|
3731 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3732 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; |
|
3733 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3734 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3735 adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
|
3736 |
|
3737 /* Tx Errors */ |
|
3738 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3739 adapter->net_stats.tx_errors = adapter->stats.txerrc; |
|
3740 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
|
3741 adapter->net_stats.tx_window_errors = adapter->stats.latecol; |
|
3742 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3743 if (hw->bad_tx_carr_stats_fd && |
|
3744 adapter->link_duplex == FULL_DUPLEX) { |
|
3745 adapter->net_stats.tx_carrier_errors = 0; |
|
3746 adapter->stats.tncrs = 0; |
|
3747 } |
|
3748 |
|
3749 /* Tx Dropped needs to be maintained elsewhere */ |
|
3750 |
|
3751 /* Phy Stats */ |
|
3752 if (hw->media_type == e1000_media_type_copper) { |
|
3753 if ((adapter->link_speed == SPEED_1000) && |
|
3754 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3755 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3756 adapter->phy_stats.idle_errors += phy_tmp; |
|
3757 } |
|
3758 |
|
3759 if ((hw->mac_type <= e1000_82546) && |
|
3760 (hw->phy_type == e1000_phy_m88) && |
|
3761 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3762 adapter->phy_stats.receive_errors += phy_tmp; |
|
3763 } |
|
3764 |
|
3765 /* Management Stats */ |
|
3766 if (hw->has_smbus) { |
|
3767 adapter->stats.mgptc += er32(MGTPTC); |
|
3768 adapter->stats.mgprc += er32(MGTPRC); |
|
3769 adapter->stats.mgpdc += er32(MGTPDC); |
|
3770 } |
|
3771 |
|
3772 if (!adapter->ecdev) |
|
3773 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3774 } |
|
3775 |
|
3776 void ec_poll(struct net_device *netdev) |
|
3777 { |
|
3778 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3779 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
3780 e1000_watchdog((unsigned long) adapter); |
|
3781 adapter->ec_watchdog_jiffies = jiffies; |
|
3782 } |
|
3783 #ifdef CONFIG_PCI_MSI |
|
3784 e1000_intr_msi(0, netdev); |
|
3785 #else |
|
3786 e1000_intr(0, netdev); |
|
3787 #endif |
|
3788 } |
|
3789 |
|
3790 /** |
|
3791 * e1000_intr_msi - Interrupt Handler |
|
3792 * @irq: interrupt number |
|
3793 * @data: pointer to a network interface device structure |
|
3794 **/ |
|
3795 |
|
3796 static irqreturn_t e1000_intr_msi(int irq, void *data) |
|
3797 { |
|
3798 struct net_device *netdev = data; |
|
3799 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3800 struct e1000_hw *hw = &adapter->hw; |
|
3801 u32 icr = er32(ICR); |
|
3802 |
|
3803 if (adapter->ecdev) { |
|
3804 int i, ec_work_done = 0; |
|
3805 for (i = 0; i < E1000_MAX_INTR; i++) { |
|
3806 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring, |
|
3807 &ec_work_done, 100) & |
|
3808 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) { |
|
3809 break; |
|
3810 } |
|
3811 } |
|
3812 } else { |
|
3813 /* in NAPI mode read ICR disables interrupts using IAM */ |
|
3814 |
|
3815 if ( !adapter->ecdev && (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) ) { |
|
3816 hw->get_link_status = 1; |
|
3817 /* 80003ES2LAN workaround-- For packet buffer work-around on |
|
3818 * link down event; disable receives here in the ISR and reset |
|
3819 * adapter in watchdog */ |
|
3820 if (netif_carrier_ok(netdev) && |
|
3821 (hw->mac_type == e1000_80003es2lan)) { |
|
3822 /* disable receives */ |
|
3823 u32 rctl = er32(RCTL); |
|
3824 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3825 } |
|
3826 /* guard against interrupt when we're going down */ |
|
3827 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3828 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3829 } |
|
3830 |
|
3831 if (likely(napi_schedule_prep(&adapter->napi))) { |
|
3832 adapter->total_tx_bytes = 0; |
|
3833 adapter->total_tx_packets = 0; |
|
3834 adapter->total_rx_bytes = 0; |
|
3835 adapter->total_rx_packets = 0; |
|
3836 __napi_schedule(&adapter->napi); |
|
3837 } else |
|
3838 e1000_irq_enable(adapter); |
|
3839 } |
|
3840 |
|
3841 return IRQ_HANDLED; |
|
3842 } |
|
3843 |
|
3844 /** |
|
3845 * e1000_intr - Interrupt Handler |
|
3846 * @irq: interrupt number |
|
3847 * @data: pointer to a network interface device structure |
|
3848 **/ |
|
3849 |
|
3850 static irqreturn_t e1000_intr(int irq, void *data) |
|
3851 { |
|
3852 struct net_device *netdev = data; |
|
3853 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3854 struct e1000_hw *hw = &adapter->hw; |
|
3855 u32 rctl, icr = er32(ICR); |
|
3856 |
|
3857 if (unlikely((!icr) || test_bit(__E1000_DOWN, &adapter->flags))) |
|
3858 return IRQ_NONE; /* Not our interrupt */ |
|
3859 |
|
3860 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
|
3861 * not set, then the adapter didn't send an interrupt */ |
|
3862 if (unlikely(hw->mac_type >= e1000_82571 && |
|
3863 !(icr & E1000_ICR_INT_ASSERTED))) |
|
3864 return IRQ_NONE; |
|
3865 |
|
3866 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No |
|
3867 * need for the IMC write */ |
|
3868 |
|
3869 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3870 hw->get_link_status = 1; |
|
3871 /* 80003ES2LAN workaround-- |
|
3872 * For packet buffer work-around on link down event; |
|
3873 * disable receives here in the ISR and |
|
3874 * reset adapter in watchdog |
|
3875 */ |
|
3876 if (netif_carrier_ok(netdev) && |
|
3877 (hw->mac_type == e1000_80003es2lan)) { |
|
3878 /* disable receives */ |
|
3879 rctl = er32(RCTL); |
|
3880 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
3881 } |
|
3882 /* guard against interrupt when we're going down */ |
|
3883 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3884 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3885 } |
|
3886 |
|
3887 if (unlikely(hw->mac_type < e1000_82571)) { |
|
3888 /* disable interrupts, without the synchronize_irq bit */ |
|
3889 ew32(IMC, ~0); |
|
3890 E1000_WRITE_FLUSH(); |
|
3891 } |
|
3892 if (likely(napi_schedule_prep(&adapter->napi))) { |
|
3893 adapter->total_tx_bytes = 0; |
|
3894 adapter->total_tx_packets = 0; |
|
3895 adapter->total_rx_bytes = 0; |
|
3896 adapter->total_rx_packets = 0; |
|
3897 __napi_schedule(&adapter->napi); |
|
3898 } else { |
|
3899 /* this really should not happen! if it does it is basically a |
|
3900 * bug, but not a hard error, so enable ints and continue */ |
|
3901 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3902 e1000_irq_enable(adapter); |
|
3903 } |
|
3904 |
|
3905 return IRQ_HANDLED; |
|
3906 } |
|
3907 |
|
3908 /** |
|
3909 * e1000_clean - NAPI Rx polling callback |
|
3910 * @adapter: board private structure |
|
3911 * EtherCAT: never called |
|
3912 **/ |
|
3913 static int e1000_clean(struct napi_struct *napi, int budget) |
|
3914 { |
|
3915 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
3916 struct net_device *poll_dev = adapter->netdev; |
|
3917 int tx_cleaned = 0, work_done = 0; |
|
3918 |
|
3919 adapter = netdev_priv(poll_dev); |
|
3920 |
|
3921 tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
|
3922 |
|
3923 adapter->clean_rx(adapter, &adapter->rx_ring[0], |
|
3924 &work_done, budget); |
|
3925 |
|
3926 if (!tx_cleaned) |
|
3927 work_done = budget; |
|
3928 |
|
3929 /* If budget not fully consumed, exit the polling mode */ |
|
3930 if (work_done < budget) { |
|
3931 if (likely(adapter->itr_setting & 3)) |
|
3932 e1000_set_itr(adapter); |
|
3933 napi_complete(napi); |
|
3934 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3935 e1000_irq_enable(adapter); |
|
3936 } |
|
3937 |
|
3938 return work_done; |
|
3939 } |
|
3940 |
|
3941 /** |
|
3942 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
3943 * @adapter: board private structure |
|
3944 **/ |
|
3945 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
3946 struct e1000_tx_ring *tx_ring) |
|
3947 { |
|
3948 struct e1000_hw *hw = &adapter->hw; |
|
3949 struct net_device *netdev = adapter->netdev; |
|
3950 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
3951 struct e1000_buffer *buffer_info; |
|
3952 unsigned int i, eop; |
|
3953 unsigned int count = 0; |
|
3954 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
3955 |
|
3956 i = tx_ring->next_to_clean; |
|
3957 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3958 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3959 |
|
3960 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
3961 (count < tx_ring->count)) { |
|
3962 bool cleaned = false; |
|
3963 for ( ; !cleaned; count++) { |
|
3964 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3965 buffer_info = &tx_ring->buffer_info[i]; |
|
3966 cleaned = (i == eop); |
|
3967 |
|
3968 if (cleaned) { |
|
3969 struct sk_buff *skb = buffer_info->skb; |
|
3970 unsigned int segs, bytecount; |
|
3971 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
3972 /* multiply data chunks by size of headers */ |
|
3973 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
3974 skb->len; |
|
3975 total_tx_packets += segs; |
|
3976 total_tx_bytes += bytecount; |
|
3977 } |
|
3978 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
3979 tx_desc->upper.data = 0; |
|
3980 |
|
3981 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3982 } |
|
3983 |
|
3984 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3985 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3986 } |
|
3987 |
|
3988 tx_ring->next_to_clean = i; |
|
3989 |
|
3990 #define TX_WAKE_THRESHOLD 32 |
|
3991 if (!adapter->ecdev && unlikely(count && netif_carrier_ok(netdev) && |
|
3992 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
3993 /* Make sure that anybody stopping the queue after this |
|
3994 * sees the new next_to_clean. |
|
3995 */ |
|
3996 smp_mb(); |
|
3997 if (netif_queue_stopped(netdev)) { |
|
3998 netif_wake_queue(netdev); |
|
3999 ++adapter->restart_queue; |
|
4000 } |
|
4001 } |
|
4002 |
|
4003 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
4004 /* Detect a transmit hang in hardware, this serializes the |
|
4005 * check with the clearing of time_stamp and movement of i */ |
|
4006 adapter->detect_tx_hung = false; |
|
4007 if (tx_ring->buffer_info[i].time_stamp && |
|
4008 time_after(jiffies, tx_ring->buffer_info[i].time_stamp + |
|
4009 (adapter->tx_timeout_factor * HZ)) |
|
4010 && !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
|
4011 |
|
4012 /* detected Tx unit hang */ |
|
4013 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
|
4014 " Tx Queue <%lu>\n" |
|
4015 " TDH <%x>\n" |
|
4016 " TDT <%x>\n" |
|
4017 " next_to_use <%x>\n" |
|
4018 " next_to_clean <%x>\n" |
|
4019 "buffer_info[next_to_clean]\n" |
|
4020 " time_stamp <%lx>\n" |
|
4021 " next_to_watch <%x>\n" |
|
4022 " jiffies <%lx>\n" |
|
4023 " next_to_watch.status <%x>\n", |
|
4024 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
4025 sizeof(struct e1000_tx_ring)), |
|
4026 readl(hw->hw_addr + tx_ring->tdh), |
|
4027 readl(hw->hw_addr + tx_ring->tdt), |
|
4028 tx_ring->next_to_use, |
|
4029 tx_ring->next_to_clean, |
|
4030 tx_ring->buffer_info[i].time_stamp, |
|
4031 eop, |
|
4032 jiffies, |
|
4033 eop_desc->upper.fields.status); |
|
4034 netif_stop_queue(netdev); |
|
4035 } |
|
4036 } |
|
4037 adapter->total_tx_bytes += total_tx_bytes; |
|
4038 adapter->total_tx_packets += total_tx_packets; |
|
4039 adapter->net_stats.tx_bytes += total_tx_bytes; |
|
4040 adapter->net_stats.tx_packets += total_tx_packets; |
|
4041 return (count < tx_ring->count); |
|
4042 } |
|
4043 |
|
4044 /** |
|
4045 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
4046 * @adapter: board private structure |
|
4047 * @status_err: receive descriptor status and error fields |
|
4048 * @csum: receive descriptor csum field |
|
4049 * @sk_buff: socket buffer with received data |
|
4050 **/ |
|
4051 |
|
4052 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
4053 u32 csum, struct sk_buff *skb) |
|
4054 { |
|
4055 struct e1000_hw *hw = &adapter->hw; |
|
4056 u16 status = (u16)status_err; |
|
4057 u8 errors = (u8)(status_err >> 24); |
|
4058 skb->ip_summed = CHECKSUM_NONE; |
|
4059 |
|
4060 /* 82543 or newer only */ |
|
4061 if (unlikely(hw->mac_type < e1000_82543)) return; |
|
4062 /* Ignore Checksum bit is set */ |
|
4063 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
4064 /* TCP/UDP checksum error bit is set */ |
|
4065 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
4066 /* let the stack verify checksum errors */ |
|
4067 adapter->hw_csum_err++; |
|
4068 return; |
|
4069 } |
|
4070 /* TCP/UDP Checksum has not been calculated */ |
|
4071 if (hw->mac_type <= e1000_82547_rev_2) { |
|
4072 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
4073 return; |
|
4074 } else { |
|
4075 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
|
4076 return; |
|
4077 } |
|
4078 /* It must be a TCP or UDP packet with a valid checksum */ |
|
4079 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
4080 /* TCP checksum is good */ |
|
4081 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
4082 } else if (hw->mac_type > e1000_82547_rev_2) { |
|
4083 /* IP fragment with UDP payload */ |
|
4084 /* Hardware complements the payload checksum, so we undo it |
|
4085 * and then put the value in host order for further stack use. |
|
4086 */ |
|
4087 __sum16 sum = (__force __sum16)htons(csum); |
|
4088 skb->csum = csum_unfold(~sum); |
|
4089 skb->ip_summed = CHECKSUM_COMPLETE; |
|
4090 } |
|
4091 adapter->hw_csum_good++; |
|
4092 } |
|
4093 |
|
4094 /** |
|
4095 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
4096 * @adapter: board private structure |
|
4097 **/ |
|
4098 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
4099 struct e1000_rx_ring *rx_ring, |
|
4100 int *work_done, int work_to_do) |
|
4101 { |
|
4102 struct e1000_hw *hw = &adapter->hw; |
|
4103 struct net_device *netdev = adapter->netdev; |
|
4104 struct pci_dev *pdev = adapter->pdev; |
|
4105 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
4106 struct e1000_buffer *buffer_info, *next_buffer; |
|
4107 unsigned long flags; |
|
4108 u32 length; |
|
4109 u8 last_byte; |
|
4110 unsigned int i; |
|
4111 int cleaned_count = 0; |
|
4112 bool cleaned = false; |
|
4113 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
4114 |
|
4115 i = rx_ring->next_to_clean; |
|
4116 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4117 buffer_info = &rx_ring->buffer_info[i]; |
|
4118 |
|
4119 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
4120 struct sk_buff *skb; |
|
4121 u8 status; |
|
4122 |
|
4123 if (*work_done >= work_to_do) |
|
4124 break; |
|
4125 (*work_done)++; |
|
4126 |
|
4127 status = rx_desc->status; |
|
4128 skb = buffer_info->skb; |
|
4129 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
4130 |
|
4131 prefetch(skb->data - NET_IP_ALIGN); |
|
4132 |
|
4133 if (++i == rx_ring->count) i = 0; |
|
4134 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
4135 prefetch(next_rxd); |
|
4136 |
|
4137 next_buffer = &rx_ring->buffer_info[i]; |
|
4138 |
|
4139 cleaned = true; |
|
4140 cleaned_count++; |
|
4141 pci_unmap_single(pdev, |
|
4142 buffer_info->dma, |
|
4143 buffer_info->length, |
|
4144 PCI_DMA_FROMDEVICE); |
|
4145 buffer_info->dma = 0; |
|
4146 |
|
4147 length = le16_to_cpu(rx_desc->length); |
|
4148 /* !EOP means multiple descriptors were used to store a single |
|
4149 * packet, also make sure the frame isn't just CRC only */ |
|
4150 if (unlikely(!(status & E1000_RXD_STAT_EOP) || (length <= 4))) { |
|
4151 /* All receives must fit into a single buffer */ |
|
4152 E1000_DBG("%s: Receive packet consumed multiple" |
|
4153 " buffers\n", netdev->name); |
|
4154 /* recycle */ |
|
4155 buffer_info->skb = skb; |
|
4156 goto next_desc; |
|
4157 } |
|
4158 |
|
4159 if (!adapter->ecdev && |
|
4160 unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
4161 last_byte = *(skb->data + length - 1); |
|
4162 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
4163 last_byte)) { |
|
4164 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4165 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
4166 length, skb->data); |
|
4167 spin_unlock_irqrestore(&adapter->stats_lock, |
|
4168 flags); |
|
4169 length--; |
|
4170 } else { |
|
4171 /* recycle */ |
|
4172 buffer_info->skb = skb; |
|
4173 goto next_desc; |
|
4174 } |
|
4175 } |
|
4176 |
|
4177 /* adjust length to remove Ethernet CRC, this must be |
|
4178 * done after the TBI_ACCEPT workaround above */ |
|
4179 length -= 4; |
|
4180 |
|
4181 /* probably a little skewed due to removing CRC */ |
|
4182 total_rx_bytes += length; |
|
4183 total_rx_packets++; |
|
4184 |
|
4185 /* code added for copybreak, this should improve |
|
4186 * performance for small packets with large amounts |
|
4187 * of reassembly being done in the stack */ |
|
4188 if (!adapter->ecdev && length < copybreak) { |
|
4189 struct sk_buff *new_skb = |
|
4190 netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
|
4191 if (new_skb) { |
|
4192 skb_reserve(new_skb, NET_IP_ALIGN); |
|
4193 skb_copy_to_linear_data_offset(new_skb, |
|
4194 -NET_IP_ALIGN, |
|
4195 (skb->data - |
|
4196 NET_IP_ALIGN), |
|
4197 (length + |
|
4198 NET_IP_ALIGN)); |
|
4199 /* save the skb in buffer_info as good */ |
|
4200 buffer_info->skb = skb; |
|
4201 skb = new_skb; |
|
4202 } |
|
4203 /* else just continue with the old one */ |
|
4204 } |
|
4205 /* end copybreak code */ |
|
4206 skb_put(skb, length); |
|
4207 |
|
4208 /* Receive Checksum Offload */ |
|
4209 e1000_rx_checksum(adapter, |
|
4210 (u32)(status) | |
|
4211 ((u32)(rx_desc->errors) << 24), |
|
4212 le16_to_cpu(rx_desc->csum), skb); |
|
4213 |
|
4214 if (adapter->ecdev) { |
|
4215 ecdev_receive(adapter->ecdev, skb->data, length); |
|
4216 |
|
4217 // No need to detect link status as |
|
4218 // long as frames are received: Reset watchdog. |
|
4219 adapter->ec_watchdog_jiffies = jiffies; |
|
4220 } else { |
|
4221 skb->protocol = eth_type_trans(skb, netdev); |
|
4222 |
|
4223 if (unlikely(adapter->vlgrp && |
|
4224 (status & E1000_RXD_STAT_VP))) { |
|
4225 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
|
4226 le16_to_cpu(rx_desc->special)); |
|
4227 } else { |
|
4228 netif_receive_skb(skb); |
|
4229 } |
|
4230 } |
|
4231 |
|
4232 next_desc: |
|
4233 rx_desc->status = 0; |
|
4234 |
|
4235 /* return some buffers to hardware, one at a time is too slow */ |
|
4236 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4237 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4238 cleaned_count = 0; |
|
4239 } |
|
4240 |
|
4241 /* use prefetched values */ |
|
4242 rx_desc = next_rxd; |
|
4243 buffer_info = next_buffer; |
|
4244 } |
|
4245 rx_ring->next_to_clean = i; |
|
4246 |
|
4247 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4248 if (cleaned_count) |
|
4249 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4250 |
|
4251 adapter->total_rx_packets += total_rx_packets; |
|
4252 adapter->total_rx_bytes += total_rx_bytes; |
|
4253 adapter->net_stats.rx_bytes += total_rx_bytes; |
|
4254 adapter->net_stats.rx_packets += total_rx_packets; |
|
4255 return cleaned; |
|
4256 } |
|
4257 |
|
4258 /** |
|
4259 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4260 * @adapter: address of board private structure |
|
4261 **/ |
|
4262 |
|
4263 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4264 struct e1000_rx_ring *rx_ring, |
|
4265 int cleaned_count) |
|
4266 { |
|
4267 struct e1000_hw *hw = &adapter->hw; |
|
4268 struct net_device *netdev = adapter->netdev; |
|
4269 struct pci_dev *pdev = adapter->pdev; |
|
4270 struct e1000_rx_desc *rx_desc; |
|
4271 struct e1000_buffer *buffer_info; |
|
4272 struct sk_buff *skb; |
|
4273 unsigned int i; |
|
4274 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; |
|
4275 |
|
4276 i = rx_ring->next_to_use; |
|
4277 buffer_info = &rx_ring->buffer_info[i]; |
|
4278 |
|
4279 while (cleaned_count--) { |
|
4280 skb = buffer_info->skb; |
|
4281 if (skb) { |
|
4282 skb_trim(skb, 0); |
|
4283 goto map_skb; |
|
4284 } |
|
4285 |
|
4286 skb = netdev_alloc_skb(netdev, bufsz); |
|
4287 if (unlikely(!skb)) { |
|
4288 /* Better luck next round */ |
|
4289 adapter->alloc_rx_buff_failed++; |
|
4290 break; |
|
4291 } |
|
4292 |
|
4293 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4294 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4295 struct sk_buff *oldskb = skb; |
|
4296 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
|
4297 "at %p\n", bufsz, skb->data); |
|
4298 /* Try again, without freeing the previous */ |
|
4299 skb = netdev_alloc_skb(netdev, bufsz); |
|
4300 /* Failed allocation, critical failure */ |
|
4301 if (!skb) { |
|
4302 dev_kfree_skb(oldskb); |
|
4303 break; |
|
4304 } |
|
4305 |
|
4306 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4307 /* give up */ |
|
4308 dev_kfree_skb(skb); |
|
4309 dev_kfree_skb(oldskb); |
|
4310 break; /* while !buffer_info->skb */ |
|
4311 } |
|
4312 |
|
4313 /* Use new allocation */ |
|
4314 dev_kfree_skb(oldskb); |
|
4315 } |
|
4316 /* Make buffer alignment 2 beyond a 16 byte boundary |
|
4317 * this will result in a 16 byte aligned IP header after |
|
4318 * the 14 byte MAC header is removed |
|
4319 */ |
|
4320 skb_reserve(skb, NET_IP_ALIGN); |
|
4321 |
|
4322 buffer_info->skb = skb; |
|
4323 buffer_info->length = adapter->rx_buffer_len; |
|
4324 map_skb: |
|
4325 buffer_info->dma = pci_map_single(pdev, |
|
4326 skb->data, |
|
4327 adapter->rx_buffer_len, |
|
4328 PCI_DMA_FROMDEVICE); |
|
4329 |
|
4330 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4331 if (!e1000_check_64k_bound(adapter, |
|
4332 (void *)(unsigned long)buffer_info->dma, |
|
4333 adapter->rx_buffer_len)) { |
|
4334 DPRINTK(RX_ERR, ERR, |
|
4335 "dma align check failed: %u bytes at %p\n", |
|
4336 adapter->rx_buffer_len, |
|
4337 (void *)(unsigned long)buffer_info->dma); |
|
4338 if (!adapter->ecdev) { |
|
4339 dev_kfree_skb(skb); |
|
4340 buffer_info->skb = NULL; |
|
4341 } |
|
4342 |
|
4343 pci_unmap_single(pdev, buffer_info->dma, |
|
4344 adapter->rx_buffer_len, |
|
4345 PCI_DMA_FROMDEVICE); |
|
4346 buffer_info->dma = 0; |
|
4347 |
|
4348 break; /* while !buffer_info->skb */ |
|
4349 } |
|
4350 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4351 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4352 |
|
4353 if (unlikely(++i == rx_ring->count)) |
|
4354 i = 0; |
|
4355 buffer_info = &rx_ring->buffer_info[i]; |
|
4356 } |
|
4357 |
|
4358 if (likely(rx_ring->next_to_use != i)) { |
|
4359 rx_ring->next_to_use = i; |
|
4360 if (unlikely(i-- == 0)) |
|
4361 i = (rx_ring->count - 1); |
|
4362 |
|
4363 /* Force memory writes to complete before letting h/w |
|
4364 * know there are new descriptors to fetch. (Only |
|
4365 * applicable for weak-ordered memory model archs, |
|
4366 * such as IA-64). */ |
|
4367 wmb(); |
|
4368 writel(i, hw->hw_addr + rx_ring->rdt); |
|
4369 } |
|
4370 } |
|
4371 |
|
4372 /** |
|
4373 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4374 * @adapter: |
|
4375 **/ |
|
4376 |
|
4377 static void e1000_smartspeed(struct e1000_adapter *adapter) |
|
4378 { |
|
4379 struct e1000_hw *hw = &adapter->hw; |
|
4380 u16 phy_status; |
|
4381 u16 phy_ctrl; |
|
4382 |
|
4383 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
|
4384 !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4385 return; |
|
4386 |
|
4387 if (adapter->smartspeed == 0) { |
|
4388 /* If Master/Slave config fault is asserted twice, |
|
4389 * we assume back-to-back */ |
|
4390 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4391 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4392 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4393 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4394 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4395 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4396 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4397 e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
|
4398 phy_ctrl); |
|
4399 adapter->smartspeed++; |
|
4400 if (!e1000_phy_setup_autoneg(hw) && |
|
4401 !e1000_read_phy_reg(hw, PHY_CTRL, |
|
4402 &phy_ctrl)) { |
|
4403 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4404 MII_CR_RESTART_AUTO_NEG); |
|
4405 e1000_write_phy_reg(hw, PHY_CTRL, |
|
4406 phy_ctrl); |
|
4407 } |
|
4408 } |
|
4409 return; |
|
4410 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4411 /* If still no link, perhaps using 2/3 pair cable */ |
|
4412 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4413 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4414 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
|
4415 if (!e1000_phy_setup_autoneg(hw) && |
|
4416 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { |
|
4417 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4418 MII_CR_RESTART_AUTO_NEG); |
|
4419 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
|
4420 } |
|
4421 } |
|
4422 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4423 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4424 adapter->smartspeed = 0; |
|
4425 } |
|
4426 |
|
4427 /** |
|
4428 * e1000_ioctl - |
|
4429 * @netdev: |
|
4430 * @ifreq: |
|
4431 * @cmd: |
|
4432 **/ |
|
4433 |
|
4434 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4435 { |
|
4436 switch (cmd) { |
|
4437 case SIOCGMIIPHY: |
|
4438 case SIOCGMIIREG: |
|
4439 case SIOCSMIIREG: |
|
4440 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4441 default: |
|
4442 return -EOPNOTSUPP; |
|
4443 } |
|
4444 } |
|
4445 |
|
4446 /** |
|
4447 * e1000_mii_ioctl - |
|
4448 * @netdev: |
|
4449 * @ifreq: |
|
4450 * @cmd: |
|
4451 **/ |
|
4452 |
|
4453 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
4454 int cmd) |
|
4455 { |
|
4456 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4457 struct e1000_hw *hw = &adapter->hw; |
|
4458 struct mii_ioctl_data *data = if_mii(ifr); |
|
4459 int retval; |
|
4460 u16 mii_reg; |
|
4461 u16 spddplx; |
|
4462 unsigned long flags; |
|
4463 |
|
4464 if (hw->media_type != e1000_media_type_copper) |
|
4465 return -EOPNOTSUPP; |
|
4466 |
|
4467 switch (cmd) { |
|
4468 case SIOCGMIIPHY: |
|
4469 data->phy_id = hw->phy_addr; |
|
4470 break; |
|
4471 case SIOCGMIIREG: |
|
4472 if (!capable(CAP_NET_ADMIN) || adapter->ecdev) |
|
4473 return -EPERM; |
|
4474 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4475 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
|
4476 &data->val_out)) { |
|
4477 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4478 return -EIO; |
|
4479 } |
|
4480 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4481 break; |
|
4482 case SIOCSMIIREG: |
|
4483 if (!capable(CAP_NET_ADMIN) || adapter->ecdev) |
|
4484 return -EPERM; |
|
4485 if (data->reg_num & ~(0x1F)) |
|
4486 return -EFAULT; |
|
4487 mii_reg = data->val_in; |
|
4488 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4489 if (e1000_write_phy_reg(hw, data->reg_num, |
|
4490 mii_reg)) { |
|
4491 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4492 return -EIO; |
|
4493 } |
|
4494 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4495 if (hw->media_type == e1000_media_type_copper) { |
|
4496 switch (data->reg_num) { |
|
4497 case PHY_CTRL: |
|
4498 if (mii_reg & MII_CR_POWER_DOWN) |
|
4499 break; |
|
4500 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4501 hw->autoneg = 1; |
|
4502 hw->autoneg_advertised = 0x2F; |
|
4503 } else { |
|
4504 if (mii_reg & 0x40) |
|
4505 spddplx = SPEED_1000; |
|
4506 else if (mii_reg & 0x2000) |
|
4507 spddplx = SPEED_100; |
|
4508 else |
|
4509 spddplx = SPEED_10; |
|
4510 spddplx += (mii_reg & 0x100) |
|
4511 ? DUPLEX_FULL : |
|
4512 DUPLEX_HALF; |
|
4513 retval = e1000_set_spd_dplx(adapter, |
|
4514 spddplx); |
|
4515 if (retval) |
|
4516 return retval; |
|
4517 } |
|
4518 if (netif_running(adapter->netdev)) |
|
4519 e1000_reinit_locked(adapter); |
|
4520 else |
|
4521 e1000_reset(adapter); |
|
4522 break; |
|
4523 case M88E1000_PHY_SPEC_CTRL: |
|
4524 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4525 if (e1000_phy_reset(hw)) |
|
4526 return -EIO; |
|
4527 break; |
|
4528 } |
|
4529 } else { |
|
4530 switch (data->reg_num) { |
|
4531 case PHY_CTRL: |
|
4532 if (mii_reg & MII_CR_POWER_DOWN) |
|
4533 break; |
|
4534 if (netif_running(adapter->netdev)) |
|
4535 e1000_reinit_locked(adapter); |
|
4536 else |
|
4537 e1000_reset(adapter); |
|
4538 break; |
|
4539 } |
|
4540 } |
|
4541 break; |
|
4542 default: |
|
4543 return -EOPNOTSUPP; |
|
4544 } |
|
4545 return E1000_SUCCESS; |
|
4546 } |
|
4547 |
|
4548 void e1000_pci_set_mwi(struct e1000_hw *hw) |
|
4549 { |
|
4550 struct e1000_adapter *adapter = hw->back; |
|
4551 int ret_val = pci_set_mwi(adapter->pdev); |
|
4552 |
|
4553 if (ret_val) |
|
4554 DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
|
4555 } |
|
4556 |
|
4557 void e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
4558 { |
|
4559 struct e1000_adapter *adapter = hw->back; |
|
4560 |
|
4561 pci_clear_mwi(adapter->pdev); |
|
4562 } |
|
4563 |
|
4564 int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
|
4565 { |
|
4566 struct e1000_adapter *adapter = hw->back; |
|
4567 return pcix_get_mmrbc(adapter->pdev); |
|
4568 } |
|
4569 |
|
4570 void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
|
4571 { |
|
4572 struct e1000_adapter *adapter = hw->back; |
|
4573 pcix_set_mmrbc(adapter->pdev, mmrbc); |
|
4574 } |
|
4575 |
|
4576 s32 e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
|
4577 { |
|
4578 struct e1000_adapter *adapter = hw->back; |
|
4579 u16 cap_offset; |
|
4580 |
|
4581 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); |
|
4582 if (!cap_offset) |
|
4583 return -E1000_ERR_CONFIG; |
|
4584 |
|
4585 pci_read_config_word(adapter->pdev, cap_offset + reg, value); |
|
4586 |
|
4587 return E1000_SUCCESS; |
|
4588 } |
|
4589 |
|
4590 void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
|
4591 { |
|
4592 outl(value, port); |
|
4593 } |
|
4594 |
|
4595 static void e1000_vlan_rx_register(struct net_device *netdev, |
|
4596 struct vlan_group *grp) |
|
4597 { |
|
4598 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4599 struct e1000_hw *hw = &adapter->hw; |
|
4600 u32 ctrl, rctl; |
|
4601 |
|
4602 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4603 e1000_irq_disable(adapter); |
|
4604 adapter->vlgrp = grp; |
|
4605 |
|
4606 if (grp) { |
|
4607 /* enable VLAN tag insert/strip */ |
|
4608 ctrl = er32(CTRL); |
|
4609 ctrl |= E1000_CTRL_VME; |
|
4610 ew32(CTRL, ctrl); |
|
4611 |
|
4612 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
4613 /* enable VLAN receive filtering */ |
|
4614 rctl = er32(RCTL); |
|
4615 rctl &= ~E1000_RCTL_CFIEN; |
|
4616 ew32(RCTL, rctl); |
|
4617 e1000_update_mng_vlan(adapter); |
|
4618 } |
|
4619 } else { |
|
4620 /* disable VLAN tag insert/strip */ |
|
4621 ctrl = er32(CTRL); |
|
4622 ctrl &= ~E1000_CTRL_VME; |
|
4623 ew32(CTRL, ctrl); |
|
4624 |
|
4625 if (adapter->hw.mac_type != e1000_ich8lan) { |
|
4626 if (adapter->mng_vlan_id != |
|
4627 (u16)E1000_MNG_VLAN_NONE) { |
|
4628 e1000_vlan_rx_kill_vid(netdev, |
|
4629 adapter->mng_vlan_id); |
|
4630 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4631 } |
|
4632 } |
|
4633 } |
|
4634 |
|
4635 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4636 e1000_irq_enable(adapter); |
|
4637 } |
|
4638 |
|
4639 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
4640 { |
|
4641 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4642 struct e1000_hw *hw = &adapter->hw; |
|
4643 u32 vfta, index; |
|
4644 |
|
4645 if ((hw->mng_cookie.status & |
|
4646 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4647 (vid == adapter->mng_vlan_id)) |
|
4648 return; |
|
4649 /* add VID to filter table */ |
|
4650 index = (vid >> 5) & 0x7F; |
|
4651 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4652 vfta |= (1 << (vid & 0x1F)); |
|
4653 e1000_write_vfta(hw, index, vfta); |
|
4654 } |
|
4655 |
|
4656 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
4657 { |
|
4658 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4659 struct e1000_hw *hw = &adapter->hw; |
|
4660 u32 vfta, index; |
|
4661 |
|
4662 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4663 e1000_irq_disable(adapter); |
|
4664 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
4665 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4666 e1000_irq_enable(adapter); |
|
4667 |
|
4668 if ((hw->mng_cookie.status & |
|
4669 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4670 (vid == adapter->mng_vlan_id)) { |
|
4671 /* release control to f/w */ |
|
4672 e1000_release_hw_control(adapter); |
|
4673 return; |
|
4674 } |
|
4675 |
|
4676 /* remove VID from filter table */ |
|
4677 index = (vid >> 5) & 0x7F; |
|
4678 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4679 vfta &= ~(1 << (vid & 0x1F)); |
|
4680 e1000_write_vfta(hw, index, vfta); |
|
4681 } |
|
4682 |
|
4683 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
4684 { |
|
4685 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
4686 |
|
4687 if (adapter->vlgrp) { |
|
4688 u16 vid; |
|
4689 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
|
4690 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
4691 continue; |
|
4692 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
4693 } |
|
4694 } |
|
4695 } |
|
4696 |
|
4697 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
|
4698 { |
|
4699 struct e1000_hw *hw = &adapter->hw; |
|
4700 |
|
4701 hw->autoneg = 0; |
|
4702 |
|
4703 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
4704 if ((hw->media_type == e1000_media_type_fiber) && |
|
4705 spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
|
4706 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
4707 return -EINVAL; |
|
4708 } |
|
4709 |
|
4710 switch (spddplx) { |
|
4711 case SPEED_10 + DUPLEX_HALF: |
|
4712 hw->forced_speed_duplex = e1000_10_half; |
|
4713 break; |
|
4714 case SPEED_10 + DUPLEX_FULL: |
|
4715 hw->forced_speed_duplex = e1000_10_full; |
|
4716 break; |
|
4717 case SPEED_100 + DUPLEX_HALF: |
|
4718 hw->forced_speed_duplex = e1000_100_half; |
|
4719 break; |
|
4720 case SPEED_100 + DUPLEX_FULL: |
|
4721 hw->forced_speed_duplex = e1000_100_full; |
|
4722 break; |
|
4723 case SPEED_1000 + DUPLEX_FULL: |
|
4724 hw->autoneg = 1; |
|
4725 hw->autoneg_advertised = ADVERTISE_1000_FULL; |
|
4726 break; |
|
4727 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
4728 default: |
|
4729 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
4730 return -EINVAL; |
|
4731 } |
|
4732 return 0; |
|
4733 } |
|
4734 |
|
4735 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
|
4736 { |
|
4737 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4738 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4739 struct e1000_hw *hw = &adapter->hw; |
|
4740 u32 ctrl, ctrl_ext, rctl, status; |
|
4741 u32 wufc = adapter->wol; |
|
4742 #ifdef CONFIG_PM |
|
4743 int retval = 0; |
|
4744 #endif |
|
4745 |
|
4746 if (adapter->ecdev) |
|
4747 return -EBUSY; |
|
4748 |
|
4749 netif_device_detach(netdev); |
|
4750 |
|
4751 if (netif_running(netdev)) { |
|
4752 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
4753 e1000_down(adapter); |
|
4754 } |
|
4755 |
|
4756 #ifdef CONFIG_PM |
|
4757 retval = pci_save_state(pdev); |
|
4758 if (retval) |
|
4759 return retval; |
|
4760 #endif |
|
4761 |
|
4762 status = er32(STATUS); |
|
4763 if (status & E1000_STATUS_LU) |
|
4764 wufc &= ~E1000_WUFC_LNKC; |
|
4765 |
|
4766 if (wufc) { |
|
4767 e1000_setup_rctl(adapter); |
|
4768 e1000_set_rx_mode(netdev); |
|
4769 |
|
4770 /* turn on all-multi mode if wake on multicast is enabled */ |
|
4771 if (wufc & E1000_WUFC_MC) { |
|
4772 rctl = er32(RCTL); |
|
4773 rctl |= E1000_RCTL_MPE; |
|
4774 ew32(RCTL, rctl); |
|
4775 } |
|
4776 |
|
4777 if (hw->mac_type >= e1000_82540) { |
|
4778 ctrl = er32(CTRL); |
|
4779 /* advertise wake from D3Cold */ |
|
4780 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
4781 /* phy power management enable */ |
|
4782 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
4783 ctrl |= E1000_CTRL_ADVD3WUC | |
|
4784 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
4785 ew32(CTRL, ctrl); |
|
4786 } |
|
4787 |
|
4788 if (hw->media_type == e1000_media_type_fiber || |
|
4789 hw->media_type == e1000_media_type_internal_serdes) { |
|
4790 /* keep the laser running in D3 */ |
|
4791 ctrl_ext = er32(CTRL_EXT); |
|
4792 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
4793 ew32(CTRL_EXT, ctrl_ext); |
|
4794 } |
|
4795 |
|
4796 /* Allow time for pending master requests to run */ |
|
4797 e1000_disable_pciex_master(hw); |
|
4798 |
|
4799 ew32(WUC, E1000_WUC_PME_EN); |
|
4800 ew32(WUFC, wufc); |
|
4801 } else { |
|
4802 ew32(WUC, 0); |
|
4803 ew32(WUFC, 0); |
|
4804 } |
|
4805 |
|
4806 e1000_release_manageability(adapter); |
|
4807 |
|
4808 *enable_wake = !!wufc; |
|
4809 |
|
4810 /* make sure adapter isn't asleep if manageability is enabled */ |
|
4811 if (adapter->en_mng_pt) |
|
4812 *enable_wake = true; |
|
4813 |
|
4814 if (hw->phy_type == e1000_phy_igp_3) |
|
4815 e1000_phy_powerdown_workaround(hw); |
|
4816 |
|
4817 if (netif_running(netdev)) |
|
4818 e1000_free_irq(adapter); |
|
4819 |
|
4820 /* Release control of h/w to f/w. If f/w is AMT enabled, this |
|
4821 * would have already happened in close and is redundant. */ |
|
4822 e1000_release_hw_control(adapter); |
|
4823 |
|
4824 pci_disable_device(pdev); |
|
4825 |
|
4826 return 0; |
|
4827 } |
|
4828 |
|
4829 #ifdef CONFIG_PM |
|
4830 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
4831 { |
|
4832 int retval; |
|
4833 bool wake; |
|
4834 |
|
4835 retval = __e1000_shutdown(pdev, &wake); |
|
4836 if (retval) |
|
4837 return retval; |
|
4838 |
|
4839 if (wake) { |
|
4840 pci_prepare_to_sleep(pdev); |
|
4841 } else { |
|
4842 pci_wake_from_d3(pdev, false); |
|
4843 pci_set_power_state(pdev, PCI_D3hot); |
|
4844 } |
|
4845 |
|
4846 return 0; |
|
4847 } |
|
4848 |
|
4849 static int e1000_resume(struct pci_dev *pdev) |
|
4850 { |
|
4851 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4852 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4853 struct e1000_hw *hw = &adapter->hw; |
|
4854 u32 err; |
|
4855 |
|
4856 if (adapter->ecdev) |
|
4857 return -EBUSY; |
|
4858 |
|
4859 pci_set_power_state(pdev, PCI_D0); |
|
4860 pci_restore_state(pdev); |
|
4861 |
|
4862 if (adapter->need_ioport) |
|
4863 err = pci_enable_device(pdev); |
|
4864 else |
|
4865 err = pci_enable_device_mem(pdev); |
|
4866 if (err) { |
|
4867 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); |
|
4868 return err; |
|
4869 } |
|
4870 pci_set_master(pdev); |
|
4871 |
|
4872 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4873 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4874 |
|
4875 if (netif_running(netdev)) { |
|
4876 err = e1000_request_irq(adapter); |
|
4877 if (err) |
|
4878 return err; |
|
4879 } |
|
4880 |
|
4881 e1000_power_up_phy(adapter); |
|
4882 e1000_reset(adapter); |
|
4883 ew32(WUS, ~0); |
|
4884 |
|
4885 e1000_init_manageability(adapter); |
|
4886 |
|
4887 if (netif_running(netdev)) |
|
4888 e1000_up(adapter); |
|
4889 |
|
4890 if (!adapter->ecdev) netif_device_attach(netdev); |
|
4891 |
|
4892 /* If the controller is 82573 and f/w is AMT, do not set |
|
4893 * DRV_LOAD until the interface is up. For all other cases, |
|
4894 * let the f/w know that the h/w is now under the control |
|
4895 * of the driver. */ |
|
4896 if (hw->mac_type != e1000_82573 || |
|
4897 !e1000_check_mng_mode(hw)) |
|
4898 e1000_get_hw_control(adapter); |
|
4899 |
|
4900 return 0; |
|
4901 } |
|
4902 #endif |
|
4903 |
|
4904 static void e1000_shutdown(struct pci_dev *pdev) |
|
4905 { |
|
4906 bool wake; |
|
4907 |
|
4908 __e1000_shutdown(pdev, &wake); |
|
4909 |
|
4910 if (system_state == SYSTEM_POWER_OFF) { |
|
4911 pci_wake_from_d3(pdev, wake); |
|
4912 pci_set_power_state(pdev, PCI_D3hot); |
|
4913 } |
|
4914 } |
|
4915 |
|
4916 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
4917 /* |
|
4918 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
4919 * without having to re-enable interrupts. It's not called while |
|
4920 * the interrupt routine is executing. |
|
4921 */ |
|
4922 static void e1000_netpoll(struct net_device *netdev) |
|
4923 { |
|
4924 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4925 |
|
4926 disable_irq(adapter->pdev->irq); |
|
4927 e1000_intr(adapter->pdev->irq, netdev); |
|
4928 enable_irq(adapter->pdev->irq); |
|
4929 } |
|
4930 #endif |
|
4931 |
|
4932 /** |
|
4933 * e1000_io_error_detected - called when PCI error is detected |
|
4934 * @pdev: Pointer to PCI device |
|
4935 * @state: The current pci conneection state |
|
4936 * |
|
4937 * This function is called after a PCI bus error affecting |
|
4938 * this device has been detected. |
|
4939 */ |
|
4940 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
4941 pci_channel_state_t state) |
|
4942 { |
|
4943 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4944 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4945 |
|
4946 netif_device_detach(netdev); |
|
4947 |
|
4948 if (state == pci_channel_io_perm_failure) |
|
4949 return PCI_ERS_RESULT_DISCONNECT; |
|
4950 |
|
4951 if (netif_running(netdev)) |
|
4952 e1000_down(adapter); |
|
4953 pci_disable_device(pdev); |
|
4954 |
|
4955 /* Request a slot slot reset. */ |
|
4956 return PCI_ERS_RESULT_NEED_RESET; |
|
4957 } |
|
4958 |
|
4959 /** |
|
4960 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
4961 * @pdev: Pointer to PCI device |
|
4962 * |
|
4963 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
4964 * resembles the first-half of the e1000_resume routine. |
|
4965 */ |
|
4966 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
4967 { |
|
4968 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4969 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4970 struct e1000_hw *hw = &adapter->hw; |
|
4971 int err; |
|
4972 |
|
4973 if (adapter->need_ioport) |
|
4974 err = pci_enable_device(pdev); |
|
4975 else |
|
4976 err = pci_enable_device_mem(pdev); |
|
4977 if (err) { |
|
4978 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); |
|
4979 return PCI_ERS_RESULT_DISCONNECT; |
|
4980 } |
|
4981 pci_set_master(pdev); |
|
4982 |
|
4983 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4984 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4985 |
|
4986 e1000_reset(adapter); |
|
4987 ew32(WUS, ~0); |
|
4988 |
|
4989 return PCI_ERS_RESULT_RECOVERED; |
|
4990 } |
|
4991 |
|
4992 /** |
|
4993 * e1000_io_resume - called when traffic can start flowing again. |
|
4994 * @pdev: Pointer to PCI device |
|
4995 * |
|
4996 * This callback is called when the error recovery driver tells us that |
|
4997 * its OK to resume normal operation. Implementation resembles the |
|
4998 * second-half of the e1000_resume routine. |
|
4999 */ |
|
5000 static void e1000_io_resume(struct pci_dev *pdev) |
|
5001 { |
|
5002 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5003 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5004 struct e1000_hw *hw = &adapter->hw; |
|
5005 |
|
5006 e1000_init_manageability(adapter); |
|
5007 |
|
5008 if (netif_running(netdev)) { |
|
5009 if (e1000_up(adapter)) { |
|
5010 printk("e1000: can't bring device back up after reset\n"); |
|
5011 return; |
|
5012 } |
|
5013 } |
|
5014 |
|
5015 netif_device_attach(netdev); |
|
5016 |
|
5017 /* If the controller is 82573 and f/w is AMT, do not set |
|
5018 * DRV_LOAD until the interface is up. For all other cases, |
|
5019 * let the f/w know that the h/w is now under the control |
|
5020 * of the driver. */ |
|
5021 if (hw->mac_type != e1000_82573 || |
|
5022 !e1000_check_mng_mode(hw)) |
|
5023 e1000_get_hw_control(adapter); |
|
5024 |
|
5025 } |
|
5026 |
|
5027 /* e1000_main.c */ |