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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 "e1000-2.6.33-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-k5-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 netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
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132 struct net_device *netdev); |
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133 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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134 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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135 static int e1000_set_mac(struct net_device *netdev, void *p); |
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136 void ec_poll(struct net_device *); |
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137 static irqreturn_t e1000_intr(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 bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
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145 struct e1000_rx_ring *rx_ring, |
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146 int *work_done, int work_to_do); |
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147 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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148 struct e1000_rx_ring *rx_ring, |
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149 int cleaned_count); |
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150 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
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151 struct e1000_rx_ring *rx_ring, |
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152 int cleaned_count); |
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153 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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154 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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155 int cmd); |
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156 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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157 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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158 static void e1000_tx_timeout(struct net_device *dev); |
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159 static void e1000_reset_task(struct work_struct *work); |
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160 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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161 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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162 struct sk_buff *skb); |
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163 |
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164 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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165 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
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166 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); |
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167 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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168 |
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169 #ifdef CONFIG_PM |
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170 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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171 static int e1000_resume(struct pci_dev *pdev); |
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172 #endif |
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173 static void e1000_shutdown(struct pci_dev *pdev); |
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174 |
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175 #ifdef CONFIG_NET_POLL_CONTROLLER |
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176 /* for netdump / net console */ |
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177 static void e1000_netpoll (struct net_device *netdev); |
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178 #endif |
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179 |
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180 #define COPYBREAK_DEFAULT 256 |
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181 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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182 module_param(copybreak, uint, 0644); |
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183 MODULE_PARM_DESC(copybreak, |
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184 "Maximum size of packet that is copied to a new buffer on receive"); |
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185 |
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186 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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187 pci_channel_state_t state); |
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188 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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189 static void e1000_io_resume(struct pci_dev *pdev); |
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190 |
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191 static struct pci_error_handlers e1000_err_handler = { |
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192 .error_detected = e1000_io_error_detected, |
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193 .slot_reset = e1000_io_slot_reset, |
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194 .resume = e1000_io_resume, |
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195 }; |
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196 |
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197 static struct pci_driver e1000_driver = { |
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198 .name = e1000_driver_name, |
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199 .id_table = e1000_pci_tbl, |
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200 .probe = e1000_probe, |
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201 .remove = __devexit_p(e1000_remove), |
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202 #ifdef CONFIG_PM |
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203 /* Power Managment Hooks */ |
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204 .suspend = e1000_suspend, |
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205 .resume = e1000_resume, |
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206 #endif |
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207 .shutdown = e1000_shutdown, |
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208 .err_handler = &e1000_err_handler |
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209 }; |
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210 |
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211 MODULE_AUTHOR("Florian Pose <fp@igh-essen.com>"); |
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212 MODULE_DESCRIPTION("EtherCAT-capable Intel(R) PRO/1000 Network Driver"); |
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213 MODULE_LICENSE("GPL"); |
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214 MODULE_VERSION(DRV_VERSION); |
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215 |
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216 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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217 module_param(debug, int, 0); |
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218 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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219 |
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220 /** |
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221 * e1000_init_module - Driver Registration Routine |
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222 * |
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223 * e1000_init_module is the first routine called when the driver is |
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224 * loaded. All it does is register with the PCI subsystem. |
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225 **/ |
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226 |
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227 static int __init e1000_init_module(void) |
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228 { |
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229 int ret; |
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230 printk(KERN_INFO "%s - version %s\n", |
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231 e1000_driver_string, e1000_driver_version); |
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232 |
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233 printk(KERN_INFO "%s\n", e1000_copyright); |
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234 |
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235 ret = pci_register_driver(&e1000_driver); |
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236 if (copybreak != COPYBREAK_DEFAULT) { |
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237 if (copybreak == 0) |
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238 printk(KERN_INFO "e1000: copybreak disabled\n"); |
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239 else |
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240 printk(KERN_INFO "e1000: copybreak enabled for " |
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241 "packets <= %u bytes\n", copybreak); |
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242 } |
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243 return ret; |
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244 } |
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245 |
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246 module_init(e1000_init_module); |
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247 |
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248 /** |
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249 * e1000_exit_module - Driver Exit Cleanup Routine |
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250 * |
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251 * e1000_exit_module is called just before the driver is removed |
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252 * from memory. |
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253 **/ |
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254 |
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255 static void __exit e1000_exit_module(void) |
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256 { |
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257 pci_unregister_driver(&e1000_driver); |
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258 } |
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259 |
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260 module_exit(e1000_exit_module); |
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261 |
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262 static int e1000_request_irq(struct e1000_adapter *adapter) |
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263 { |
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264 struct net_device *netdev = adapter->netdev; |
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265 irq_handler_t handler = e1000_intr; |
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266 int irq_flags = IRQF_SHARED; |
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267 int err; |
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268 |
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269 if (adapter->ecdev) |
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270 return 0; |
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271 |
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272 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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273 netdev); |
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274 if (err) { |
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275 DPRINTK(PROBE, ERR, |
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276 "Unable to allocate interrupt Error: %d\n", err); |
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277 } |
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278 |
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279 return err; |
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280 } |
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281 |
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282 static void e1000_free_irq(struct e1000_adapter *adapter) |
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283 { |
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284 struct net_device *netdev = adapter->netdev; |
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285 |
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286 if (adapter->ecdev) |
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287 return; |
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288 |
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289 free_irq(adapter->pdev->irq, netdev); |
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290 } |
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291 |
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292 /** |
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293 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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294 * @adapter: board private structure |
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295 **/ |
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296 |
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297 static void e1000_irq_disable(struct e1000_adapter *adapter) |
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298 { |
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299 struct e1000_hw *hw = &adapter->hw; |
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300 |
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301 if (adapter->ecdev) |
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302 return; |
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303 |
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304 ew32(IMC, ~0); |
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305 E1000_WRITE_FLUSH(); |
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306 synchronize_irq(adapter->pdev->irq); |
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307 } |
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308 |
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309 /** |
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310 * e1000_irq_enable - Enable default interrupt generation settings |
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311 * @adapter: board private structure |
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312 **/ |
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313 |
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314 static void e1000_irq_enable(struct e1000_adapter *adapter) |
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315 { |
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316 struct e1000_hw *hw = &adapter->hw; |
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317 |
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318 if (adapter->ecdev) |
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319 return; |
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320 |
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321 ew32(IMS, IMS_ENABLE_MASK); |
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322 E1000_WRITE_FLUSH(); |
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323 } |
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324 |
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325 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
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326 { |
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327 struct e1000_hw *hw = &adapter->hw; |
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328 struct net_device *netdev = adapter->netdev; |
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329 u16 vid = hw->mng_cookie.vlan_id; |
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330 u16 old_vid = adapter->mng_vlan_id; |
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331 if (adapter->vlgrp) { |
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332 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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333 if (hw->mng_cookie.status & |
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334 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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335 e1000_vlan_rx_add_vid(netdev, vid); |
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336 adapter->mng_vlan_id = vid; |
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337 } else |
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338 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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339 |
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340 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
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341 (vid != old_vid) && |
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342 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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343 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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344 } else |
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345 adapter->mng_vlan_id = vid; |
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346 } |
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347 } |
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348 |
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349 static void e1000_init_manageability(struct e1000_adapter *adapter) |
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350 { |
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351 struct e1000_hw *hw = &adapter->hw; |
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352 |
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353 if (adapter->en_mng_pt) { |
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354 u32 manc = er32(MANC); |
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355 |
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356 /* disable hardware interception of ARP */ |
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357 manc &= ~(E1000_MANC_ARP_EN); |
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358 |
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359 ew32(MANC, manc); |
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360 } |
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361 } |
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362 |
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363 static void e1000_release_manageability(struct e1000_adapter *adapter) |
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364 { |
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365 struct e1000_hw *hw = &adapter->hw; |
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366 |
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367 if (adapter->en_mng_pt) { |
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368 u32 manc = er32(MANC); |
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369 |
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370 /* re-enable hardware interception of ARP */ |
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371 manc |= E1000_MANC_ARP_EN; |
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372 |
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373 ew32(MANC, manc); |
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374 } |
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375 } |
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376 |
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377 /** |
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378 * e1000_configure - configure the hardware for RX and TX |
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379 * @adapter = private board structure |
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380 **/ |
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381 static void e1000_configure(struct e1000_adapter *adapter) |
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382 { |
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383 struct net_device *netdev = adapter->netdev; |
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384 int i; |
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385 |
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386 e1000_set_rx_mode(netdev); |
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387 |
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388 e1000_restore_vlan(adapter); |
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389 e1000_init_manageability(adapter); |
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390 |
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391 e1000_configure_tx(adapter); |
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392 e1000_setup_rctl(adapter); |
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393 e1000_configure_rx(adapter); |
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394 /* call E1000_DESC_UNUSED which always leaves |
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395 * at least 1 descriptor unused to make sure |
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396 * next_to_use != next_to_clean */ |
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397 for (i = 0; i < adapter->num_rx_queues; i++) { |
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398 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
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399 if (adapter->ecdev) { |
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400 /* fill rx ring completely! */ |
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401 adapter->alloc_rx_buf(adapter, ring, ring->count); |
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402 } else { |
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403 /* this one leaves the last ring element unallocated! */ |
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404 adapter->alloc_rx_buf(adapter, ring, |
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405 E1000_DESC_UNUSED(ring)); |
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406 } |
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407 } |
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408 |
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409 adapter->tx_queue_len = netdev->tx_queue_len; |
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410 } |
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411 |
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412 int e1000_up(struct e1000_adapter *adapter) |
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413 { |
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414 struct e1000_hw *hw = &adapter->hw; |
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415 |
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416 /* hardware has been reset, we need to reload some things */ |
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417 e1000_configure(adapter); |
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418 |
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419 clear_bit(__E1000_DOWN, &adapter->flags); |
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420 |
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421 if (!adapter->ecdev) { |
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422 napi_enable(&adapter->napi); |
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423 |
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424 e1000_irq_enable(adapter); |
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425 |
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426 netif_wake_queue(adapter->netdev); |
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427 |
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428 /* fire a link change interrupt to start the watchdog */ |
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429 ew32(ICS, E1000_ICS_LSC); |
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430 } |
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431 return 0; |
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432 } |
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433 |
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434 /** |
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435 * e1000_power_up_phy - restore link in case the phy was powered down |
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436 * @adapter: address of board private structure |
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437 * |
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438 * The phy may be powered down to save power and turn off link when the |
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439 * driver is unloaded and wake on lan is not enabled (among others) |
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440 * *** this routine MUST be followed by a call to e1000_reset *** |
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441 * |
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442 **/ |
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443 |
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444 void e1000_power_up_phy(struct e1000_adapter *adapter) |
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445 { |
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446 struct e1000_hw *hw = &adapter->hw; |
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447 u16 mii_reg = 0; |
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448 |
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449 /* Just clear the power down bit to wake the phy back up */ |
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450 if (hw->media_type == e1000_media_type_copper) { |
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451 /* according to the manual, the phy will retain its |
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452 * settings across a power-down/up cycle */ |
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453 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
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454 mii_reg &= ~MII_CR_POWER_DOWN; |
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455 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
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456 } |
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457 } |
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458 |
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459 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
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460 { |
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461 struct e1000_hw *hw = &adapter->hw; |
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462 |
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463 /* Power down the PHY so no link is implied when interface is down * |
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464 * The PHY cannot be powered down if any of the following is true * |
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465 * (a) WoL is enabled |
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466 * (b) AMT is active |
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467 * (c) SoL/IDER session is active */ |
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468 if (!adapter->wol && hw->mac_type >= e1000_82540 && |
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469 hw->media_type == e1000_media_type_copper) { |
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470 u16 mii_reg = 0; |
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471 |
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472 switch (hw->mac_type) { |
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473 case e1000_82540: |
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474 case e1000_82545: |
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475 case e1000_82545_rev_3: |
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476 case e1000_82546: |
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477 case e1000_82546_rev_3: |
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478 case e1000_82541: |
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479 case e1000_82541_rev_2: |
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480 case e1000_82547: |
|
481 case e1000_82547_rev_2: |
|
482 if (er32(MANC) & E1000_MANC_SMBUS_EN) |
|
483 goto out; |
|
484 break; |
|
485 default: |
|
486 goto out; |
|
487 } |
|
488 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
|
489 mii_reg |= MII_CR_POWER_DOWN; |
|
490 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
|
491 mdelay(1); |
|
492 } |
|
493 out: |
|
494 return; |
|
495 } |
|
496 |
|
497 void e1000_down(struct e1000_adapter *adapter) |
|
498 { |
|
499 struct e1000_hw *hw = &adapter->hw; |
|
500 struct net_device *netdev = adapter->netdev; |
|
501 u32 rctl, tctl; |
|
502 |
|
503 /* signal that we're down so the interrupt handler does not |
|
504 * reschedule our watchdog timer */ |
|
505 set_bit(__E1000_DOWN, &adapter->flags); |
|
506 |
|
507 /* disable receives in the hardware */ |
|
508 rctl = er32(RCTL); |
|
509 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
510 |
|
511 if (!adapter->ecdev) { |
|
512 /* flush and sleep below */ |
|
513 netif_tx_disable(netdev); |
|
514 } |
|
515 |
|
516 /* disable transmits in the hardware */ |
|
517 tctl = er32(TCTL); |
|
518 tctl &= ~E1000_TCTL_EN; |
|
519 ew32(TCTL, tctl); |
|
520 /* flush both disables and wait for them to finish */ |
|
521 E1000_WRITE_FLUSH(); |
|
522 msleep(10); |
|
523 |
|
524 if (!adapter->ecdev) { |
|
525 napi_disable(&adapter->napi); |
|
526 |
|
527 e1000_irq_disable(adapter); |
|
528 |
|
529 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
530 del_timer_sync(&adapter->watchdog_timer); |
|
531 del_timer_sync(&adapter->phy_info_timer); |
|
532 } |
|
533 |
|
534 netdev->tx_queue_len = adapter->tx_queue_len; |
|
535 adapter->link_speed = 0; |
|
536 adapter->link_duplex = 0; |
|
537 if (!adapter->ecdev) { |
|
538 netif_carrier_off(netdev); |
|
539 } |
|
540 |
|
541 e1000_reset(adapter); |
|
542 e1000_clean_all_tx_rings(adapter); |
|
543 e1000_clean_all_rx_rings(adapter); |
|
544 } |
|
545 |
|
546 void e1000_reinit_locked(struct e1000_adapter *adapter) |
|
547 { |
|
548 WARN_ON(in_interrupt()); |
|
549 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
550 msleep(1); |
|
551 e1000_down(adapter); |
|
552 e1000_up(adapter); |
|
553 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
554 } |
|
555 |
|
556 void e1000_reset(struct e1000_adapter *adapter) |
|
557 { |
|
558 struct e1000_hw *hw = &adapter->hw; |
|
559 u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
|
560 bool legacy_pba_adjust = false; |
|
561 u16 hwm; |
|
562 |
|
563 /* Repartition Pba for greater than 9k mtu |
|
564 * To take effect CTRL.RST is required. |
|
565 */ |
|
566 |
|
567 switch (hw->mac_type) { |
|
568 case e1000_82542_rev2_0: |
|
569 case e1000_82542_rev2_1: |
|
570 case e1000_82543: |
|
571 case e1000_82544: |
|
572 case e1000_82540: |
|
573 case e1000_82541: |
|
574 case e1000_82541_rev_2: |
|
575 legacy_pba_adjust = true; |
|
576 pba = E1000_PBA_48K; |
|
577 break; |
|
578 case e1000_82545: |
|
579 case e1000_82545_rev_3: |
|
580 case e1000_82546: |
|
581 case e1000_82546_rev_3: |
|
582 pba = E1000_PBA_48K; |
|
583 break; |
|
584 case e1000_82547: |
|
585 case e1000_82547_rev_2: |
|
586 legacy_pba_adjust = true; |
|
587 pba = E1000_PBA_30K; |
|
588 break; |
|
589 case e1000_undefined: |
|
590 case e1000_num_macs: |
|
591 break; |
|
592 } |
|
593 |
|
594 if (legacy_pba_adjust) { |
|
595 if (hw->max_frame_size > E1000_RXBUFFER_8192) |
|
596 pba -= 8; /* allocate more FIFO for Tx */ |
|
597 |
|
598 if (hw->mac_type == e1000_82547) { |
|
599 adapter->tx_fifo_head = 0; |
|
600 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
601 adapter->tx_fifo_size = |
|
602 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
603 atomic_set(&adapter->tx_fifo_stall, 0); |
|
604 } |
|
605 } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
606 /* adjust PBA for jumbo frames */ |
|
607 ew32(PBA, pba); |
|
608 |
|
609 /* To maintain wire speed transmits, the Tx FIFO should be |
|
610 * large enough to accommodate two full transmit packets, |
|
611 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
612 * the Rx FIFO should be large enough to accommodate at least |
|
613 * one full receive packet and is similarly rounded up and |
|
614 * expressed in KB. */ |
|
615 pba = er32(PBA); |
|
616 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
617 tx_space = pba >> 16; |
|
618 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
619 pba &= 0xffff; |
|
620 /* |
|
621 * the tx fifo also stores 16 bytes of information about the tx |
|
622 * but don't include ethernet FCS because hardware appends it |
|
623 */ |
|
624 min_tx_space = (hw->max_frame_size + |
|
625 sizeof(struct e1000_tx_desc) - |
|
626 ETH_FCS_LEN) * 2; |
|
627 min_tx_space = ALIGN(min_tx_space, 1024); |
|
628 min_tx_space >>= 10; |
|
629 /* software strips receive CRC, so leave room for it */ |
|
630 min_rx_space = hw->max_frame_size; |
|
631 min_rx_space = ALIGN(min_rx_space, 1024); |
|
632 min_rx_space >>= 10; |
|
633 |
|
634 /* If current Tx allocation is less than the min Tx FIFO size, |
|
635 * and the min Tx FIFO size is less than the current Rx FIFO |
|
636 * allocation, take space away from current Rx allocation */ |
|
637 if (tx_space < min_tx_space && |
|
638 ((min_tx_space - tx_space) < pba)) { |
|
639 pba = pba - (min_tx_space - tx_space); |
|
640 |
|
641 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
642 switch (hw->mac_type) { |
|
643 case e1000_82545 ... e1000_82546_rev_3: |
|
644 pba &= ~(E1000_PBA_8K - 1); |
|
645 break; |
|
646 default: |
|
647 break; |
|
648 } |
|
649 |
|
650 /* if short on rx space, rx wins and must trump tx |
|
651 * adjustment or use Early Receive if available */ |
|
652 if (pba < min_rx_space) |
|
653 pba = min_rx_space; |
|
654 } |
|
655 } |
|
656 |
|
657 ew32(PBA, pba); |
|
658 |
|
659 /* |
|
660 * flow control settings: |
|
661 * The high water mark must be low enough to fit one full frame |
|
662 * (or the size used for early receive) above it in the Rx FIFO. |
|
663 * Set it to the lower of: |
|
664 * - 90% of the Rx FIFO size, and |
|
665 * - the full Rx FIFO size minus the early receive size (for parts |
|
666 * with ERT support assuming ERT set to E1000_ERT_2048), or |
|
667 * - the full Rx FIFO size minus one full frame |
|
668 */ |
|
669 hwm = min(((pba << 10) * 9 / 10), |
|
670 ((pba << 10) - hw->max_frame_size)); |
|
671 |
|
672 hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
|
673 hw->fc_low_water = hw->fc_high_water - 8; |
|
674 hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
|
675 hw->fc_send_xon = 1; |
|
676 hw->fc = hw->original_fc; |
|
677 |
|
678 /* Allow time for pending master requests to run */ |
|
679 e1000_reset_hw(hw); |
|
680 if (hw->mac_type >= e1000_82544) |
|
681 ew32(WUC, 0); |
|
682 |
|
683 if (e1000_init_hw(hw)) |
|
684 DPRINTK(PROBE, ERR, "Hardware Error\n"); |
|
685 e1000_update_mng_vlan(adapter); |
|
686 |
|
687 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
688 if (hw->mac_type >= e1000_82544 && |
|
689 hw->autoneg == 1 && |
|
690 hw->autoneg_advertised == ADVERTISE_1000_FULL) { |
|
691 u32 ctrl = er32(CTRL); |
|
692 /* clear phy power management bit if we are in gig only mode, |
|
693 * which if enabled will attempt negotiation to 100Mb, which |
|
694 * can cause a loss of link at power off or driver unload */ |
|
695 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
696 ew32(CTRL, ctrl); |
|
697 } |
|
698 |
|
699 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
700 ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
|
701 |
|
702 e1000_reset_adaptive(hw); |
|
703 e1000_phy_get_info(hw, &adapter->phy_info); |
|
704 |
|
705 e1000_release_manageability(adapter); |
|
706 } |
|
707 |
|
708 /** |
|
709 * Dump the eeprom for users having checksum issues |
|
710 **/ |
|
711 static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
|
712 { |
|
713 struct net_device *netdev = adapter->netdev; |
|
714 struct ethtool_eeprom eeprom; |
|
715 const struct ethtool_ops *ops = netdev->ethtool_ops; |
|
716 u8 *data; |
|
717 int i; |
|
718 u16 csum_old, csum_new = 0; |
|
719 |
|
720 eeprom.len = ops->get_eeprom_len(netdev); |
|
721 eeprom.offset = 0; |
|
722 |
|
723 data = kmalloc(eeprom.len, GFP_KERNEL); |
|
724 if (!data) { |
|
725 printk(KERN_ERR "Unable to allocate memory to dump EEPROM" |
|
726 " data\n"); |
|
727 return; |
|
728 } |
|
729 |
|
730 ops->get_eeprom(netdev, &eeprom, data); |
|
731 |
|
732 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + |
|
733 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); |
|
734 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) |
|
735 csum_new += data[i] + (data[i + 1] << 8); |
|
736 csum_new = EEPROM_SUM - csum_new; |
|
737 |
|
738 printk(KERN_ERR "/*********************/\n"); |
|
739 printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); |
|
740 printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); |
|
741 |
|
742 printk(KERN_ERR "Offset Values\n"); |
|
743 printk(KERN_ERR "======== ======\n"); |
|
744 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
|
745 |
|
746 printk(KERN_ERR "Include this output when contacting your support " |
|
747 "provider.\n"); |
|
748 printk(KERN_ERR "This is not a software error! Something bad " |
|
749 "happened to your hardware or\n"); |
|
750 printk(KERN_ERR "EEPROM image. Ignoring this " |
|
751 "problem could result in further problems,\n"); |
|
752 printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); |
|
753 printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " |
|
754 "which is invalid\n"); |
|
755 printk(KERN_ERR "and requires you to set the proper MAC " |
|
756 "address manually before continuing\n"); |
|
757 printk(KERN_ERR "to enable this network device.\n"); |
|
758 printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " |
|
759 "to your hardware vendor\n"); |
|
760 printk(KERN_ERR "or Intel Customer Support.\n"); |
|
761 printk(KERN_ERR "/*********************/\n"); |
|
762 |
|
763 kfree(data); |
|
764 } |
|
765 |
|
766 /** |
|
767 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not |
|
768 * @pdev: PCI device information struct |
|
769 * |
|
770 * Return true if an adapter needs ioport resources |
|
771 **/ |
|
772 static int e1000_is_need_ioport(struct pci_dev *pdev) |
|
773 { |
|
774 switch (pdev->device) { |
|
775 case E1000_DEV_ID_82540EM: |
|
776 case E1000_DEV_ID_82540EM_LOM: |
|
777 case E1000_DEV_ID_82540EP: |
|
778 case E1000_DEV_ID_82540EP_LOM: |
|
779 case E1000_DEV_ID_82540EP_LP: |
|
780 case E1000_DEV_ID_82541EI: |
|
781 case E1000_DEV_ID_82541EI_MOBILE: |
|
782 case E1000_DEV_ID_82541ER: |
|
783 case E1000_DEV_ID_82541ER_LOM: |
|
784 case E1000_DEV_ID_82541GI: |
|
785 case E1000_DEV_ID_82541GI_LF: |
|
786 case E1000_DEV_ID_82541GI_MOBILE: |
|
787 case E1000_DEV_ID_82544EI_COPPER: |
|
788 case E1000_DEV_ID_82544EI_FIBER: |
|
789 case E1000_DEV_ID_82544GC_COPPER: |
|
790 case E1000_DEV_ID_82544GC_LOM: |
|
791 case E1000_DEV_ID_82545EM_COPPER: |
|
792 case E1000_DEV_ID_82545EM_FIBER: |
|
793 case E1000_DEV_ID_82546EB_COPPER: |
|
794 case E1000_DEV_ID_82546EB_FIBER: |
|
795 case E1000_DEV_ID_82546EB_QUAD_COPPER: |
|
796 return true; |
|
797 default: |
|
798 return false; |
|
799 } |
|
800 } |
|
801 |
|
802 static const struct net_device_ops e1000_netdev_ops = { |
|
803 .ndo_open = e1000_open, |
|
804 .ndo_stop = e1000_close, |
|
805 .ndo_start_xmit = e1000_xmit_frame, |
|
806 .ndo_get_stats = e1000_get_stats, |
|
807 .ndo_set_rx_mode = e1000_set_rx_mode, |
|
808 .ndo_set_mac_address = e1000_set_mac, |
|
809 .ndo_tx_timeout = e1000_tx_timeout, |
|
810 .ndo_change_mtu = e1000_change_mtu, |
|
811 .ndo_do_ioctl = e1000_ioctl, |
|
812 .ndo_validate_addr = eth_validate_addr, |
|
813 |
|
814 .ndo_vlan_rx_register = e1000_vlan_rx_register, |
|
815 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
816 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
817 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
818 .ndo_poll_controller = e1000_netpoll, |
|
819 #endif |
|
820 }; |
|
821 |
|
822 /** |
|
823 * e1000_probe - Device Initialization Routine |
|
824 * @pdev: PCI device information struct |
|
825 * @ent: entry in e1000_pci_tbl |
|
826 * |
|
827 * Returns 0 on success, negative on failure |
|
828 * |
|
829 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
830 * The OS initialization, configuring of the adapter private structure, |
|
831 * and a hardware reset occur. |
|
832 **/ |
|
833 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
834 const struct pci_device_id *ent) |
|
835 { |
|
836 struct net_device *netdev; |
|
837 struct e1000_adapter *adapter; |
|
838 struct e1000_hw *hw; |
|
839 |
|
840 static int cards_found = 0; |
|
841 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
842 int i, err, pci_using_dac; |
|
843 u16 eeprom_data = 0; |
|
844 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
845 int bars, need_ioport; |
|
846 |
|
847 /* do not allocate ioport bars when not needed */ |
|
848 need_ioport = e1000_is_need_ioport(pdev); |
|
849 if (need_ioport) { |
|
850 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); |
|
851 err = pci_enable_device(pdev); |
|
852 } else { |
|
853 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
854 err = pci_enable_device_mem(pdev); |
|
855 } |
|
856 if (err) |
|
857 return err; |
|
858 |
|
859 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && |
|
860 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { |
|
861 pci_using_dac = 1; |
|
862 } else { |
|
863 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
|
864 if (err) { |
|
865 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
|
866 if (err) { |
|
867 E1000_ERR("No usable DMA configuration, " |
|
868 "aborting\n"); |
|
869 goto err_dma; |
|
870 } |
|
871 } |
|
872 pci_using_dac = 0; |
|
873 } |
|
874 |
|
875 err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
|
876 if (err) |
|
877 goto err_pci_reg; |
|
878 |
|
879 pci_set_master(pdev); |
|
880 |
|
881 err = -ENOMEM; |
|
882 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
883 if (!netdev) |
|
884 goto err_alloc_etherdev; |
|
885 |
|
886 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
887 |
|
888 pci_set_drvdata(pdev, netdev); |
|
889 adapter = netdev_priv(netdev); |
|
890 adapter->netdev = netdev; |
|
891 adapter->pdev = pdev; |
|
892 adapter->msg_enable = (1 << debug) - 1; |
|
893 adapter->bars = bars; |
|
894 adapter->need_ioport = need_ioport; |
|
895 |
|
896 hw = &adapter->hw; |
|
897 hw->back = adapter; |
|
898 |
|
899 err = -EIO; |
|
900 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
|
901 if (!hw->hw_addr) |
|
902 goto err_ioremap; |
|
903 |
|
904 if (adapter->need_ioport) { |
|
905 for (i = BAR_1; i <= BAR_5; i++) { |
|
906 if (pci_resource_len(pdev, i) == 0) |
|
907 continue; |
|
908 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
909 hw->io_base = pci_resource_start(pdev, i); |
|
910 break; |
|
911 } |
|
912 } |
|
913 } |
|
914 |
|
915 netdev->netdev_ops = &e1000_netdev_ops; |
|
916 e1000_set_ethtool_ops(netdev); |
|
917 netdev->watchdog_timeo = 5 * HZ; |
|
918 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
919 |
|
920 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
921 |
|
922 adapter->bd_number = cards_found; |
|
923 |
|
924 /* setup the private structure */ |
|
925 |
|
926 err = e1000_sw_init(adapter); |
|
927 if (err) |
|
928 goto err_sw_init; |
|
929 |
|
930 err = -EIO; |
|
931 |
|
932 if (hw->mac_type >= e1000_82543) { |
|
933 netdev->features = NETIF_F_SG | |
|
934 NETIF_F_HW_CSUM | |
|
935 NETIF_F_HW_VLAN_TX | |
|
936 NETIF_F_HW_VLAN_RX | |
|
937 NETIF_F_HW_VLAN_FILTER; |
|
938 } |
|
939 |
|
940 if ((hw->mac_type >= e1000_82544) && |
|
941 (hw->mac_type != e1000_82547)) |
|
942 netdev->features |= NETIF_F_TSO; |
|
943 |
|
944 if (pci_using_dac) |
|
945 netdev->features |= NETIF_F_HIGHDMA; |
|
946 |
|
947 netdev->vlan_features |= NETIF_F_TSO; |
|
948 netdev->vlan_features |= NETIF_F_HW_CSUM; |
|
949 netdev->vlan_features |= NETIF_F_SG; |
|
950 |
|
951 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
|
952 |
|
953 /* initialize eeprom parameters */ |
|
954 if (e1000_init_eeprom_params(hw)) { |
|
955 E1000_ERR("EEPROM initialization failed\n"); |
|
956 goto err_eeprom; |
|
957 } |
|
958 |
|
959 /* before reading the EEPROM, reset the controller to |
|
960 * put the device in a known good starting state */ |
|
961 |
|
962 e1000_reset_hw(hw); |
|
963 |
|
964 /* make sure the EEPROM is good */ |
|
965 if (e1000_validate_eeprom_checksum(hw) < 0) { |
|
966 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
|
967 e1000_dump_eeprom(adapter); |
|
968 /* |
|
969 * set MAC address to all zeroes to invalidate and temporary |
|
970 * disable this device for the user. This blocks regular |
|
971 * traffic while still permitting ethtool ioctls from reaching |
|
972 * the hardware as well as allowing the user to run the |
|
973 * interface after manually setting a hw addr using |
|
974 * `ip set address` |
|
975 */ |
|
976 memset(hw->mac_addr, 0, netdev->addr_len); |
|
977 } else { |
|
978 /* copy the MAC address out of the EEPROM */ |
|
979 if (e1000_read_mac_addr(hw)) |
|
980 DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
|
981 } |
|
982 /* don't block initalization here due to bad MAC address */ |
|
983 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
|
984 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); |
|
985 |
|
986 if (!is_valid_ether_addr(netdev->perm_addr)) |
|
987 DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
|
988 |
|
989 e1000_get_bus_info(hw); |
|
990 |
|
991 init_timer(&adapter->tx_fifo_stall_timer); |
|
992 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; |
|
993 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
|
994 |
|
995 init_timer(&adapter->watchdog_timer); |
|
996 adapter->watchdog_timer.function = &e1000_watchdog; |
|
997 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
998 |
|
999 init_timer(&adapter->phy_info_timer); |
|
1000 adapter->phy_info_timer.function = &e1000_update_phy_info; |
|
1001 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
1002 |
|
1003 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
1004 |
|
1005 e1000_check_options(adapter); |
|
1006 |
|
1007 /* Initial Wake on LAN setting |
|
1008 * If APM wake is enabled in the EEPROM, |
|
1009 * enable the ACPI Magic Packet filter |
|
1010 */ |
|
1011 |
|
1012 switch (hw->mac_type) { |
|
1013 case e1000_82542_rev2_0: |
|
1014 case e1000_82542_rev2_1: |
|
1015 case e1000_82543: |
|
1016 break; |
|
1017 case e1000_82544: |
|
1018 e1000_read_eeprom(hw, |
|
1019 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
1020 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
1021 break; |
|
1022 case e1000_82546: |
|
1023 case e1000_82546_rev_3: |
|
1024 if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
|
1025 e1000_read_eeprom(hw, |
|
1026 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
1027 break; |
|
1028 } |
|
1029 /* Fall Through */ |
|
1030 default: |
|
1031 e1000_read_eeprom(hw, |
|
1032 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1033 break; |
|
1034 } |
|
1035 if (eeprom_data & eeprom_apme_mask) |
|
1036 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1037 |
|
1038 /* now that we have the eeprom settings, apply the special cases |
|
1039 * where the eeprom may be wrong or the board simply won't support |
|
1040 * wake on lan on a particular port */ |
|
1041 switch (pdev->device) { |
|
1042 case E1000_DEV_ID_82546GB_PCIE: |
|
1043 adapter->eeprom_wol = 0; |
|
1044 break; |
|
1045 case E1000_DEV_ID_82546EB_FIBER: |
|
1046 case E1000_DEV_ID_82546GB_FIBER: |
|
1047 /* Wake events only supported on port A for dual fiber |
|
1048 * regardless of eeprom setting */ |
|
1049 if (er32(STATUS) & E1000_STATUS_FUNC_1) |
|
1050 adapter->eeprom_wol = 0; |
|
1051 break; |
|
1052 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1053 /* if quad port adapter, disable WoL on all but port A */ |
|
1054 if (global_quad_port_a != 0) |
|
1055 adapter->eeprom_wol = 0; |
|
1056 else |
|
1057 adapter->quad_port_a = 1; |
|
1058 /* Reset for multiple quad port adapters */ |
|
1059 if (++global_quad_port_a == 4) |
|
1060 global_quad_port_a = 0; |
|
1061 break; |
|
1062 } |
|
1063 |
|
1064 /* initialize the wol settings based on the eeprom settings */ |
|
1065 adapter->wol = adapter->eeprom_wol; |
|
1066 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
1067 |
|
1068 /* print bus type/speed/width info */ |
|
1069 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", |
|
1070 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
|
1071 ((hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : |
|
1072 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : |
|
1073 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : |
|
1074 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), |
|
1075 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : "32-bit")); |
|
1076 |
|
1077 printk("%pM\n", netdev->dev_addr); |
|
1078 |
|
1079 /* reset the hardware with the new settings */ |
|
1080 e1000_reset(adapter); |
|
1081 |
|
1082 // offer device to EtherCAT master module |
|
1083 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
1084 if (adapter->ecdev) { |
|
1085 if (ecdev_open(adapter->ecdev)) { |
|
1086 ecdev_withdraw(adapter->ecdev); |
|
1087 goto err_register; |
|
1088 } |
|
1089 } else { |
|
1090 strcpy(netdev->name, "eth%d"); |
|
1091 err = register_netdev(netdev); |
|
1092 if (err) |
|
1093 goto err_register; |
|
1094 |
|
1095 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
1096 netif_carrier_off(netdev); |
|
1097 } |
|
1098 |
|
1099 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
|
1100 |
|
1101 cards_found++; |
|
1102 return 0; |
|
1103 |
|
1104 err_register: |
|
1105 err_eeprom: |
|
1106 e1000_phy_hw_reset(hw); |
|
1107 |
|
1108 if (hw->flash_address) |
|
1109 iounmap(hw->flash_address); |
|
1110 kfree(adapter->tx_ring); |
|
1111 kfree(adapter->rx_ring); |
|
1112 err_sw_init: |
|
1113 iounmap(hw->hw_addr); |
|
1114 err_ioremap: |
|
1115 free_netdev(netdev); |
|
1116 err_alloc_etherdev: |
|
1117 pci_release_selected_regions(pdev, bars); |
|
1118 err_pci_reg: |
|
1119 err_dma: |
|
1120 pci_disable_device(pdev); |
|
1121 return err; |
|
1122 } |
|
1123 |
|
1124 /** |
|
1125 * e1000_remove - Device Removal Routine |
|
1126 * @pdev: PCI device information struct |
|
1127 * |
|
1128 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1129 * that it should release a PCI device. The could be caused by a |
|
1130 * Hot-Plug event, or because the driver is going to be removed from |
|
1131 * memory. |
|
1132 **/ |
|
1133 |
|
1134 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
1135 { |
|
1136 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1137 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1138 struct e1000_hw *hw = &adapter->hw; |
|
1139 |
|
1140 set_bit(__E1000_DOWN, &adapter->flags); |
|
1141 |
|
1142 if (!adapter->ecdev) { |
|
1143 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
1144 del_timer_sync(&adapter->watchdog_timer); |
|
1145 del_timer_sync(&adapter->phy_info_timer); |
|
1146 } |
|
1147 |
|
1148 cancel_work_sync(&adapter->reset_task); |
|
1149 |
|
1150 e1000_release_manageability(adapter); |
|
1151 |
|
1152 if (adapter->ecdev) { |
|
1153 ecdev_close(adapter->ecdev); |
|
1154 ecdev_withdraw(adapter->ecdev); |
|
1155 } else { |
|
1156 unregister_netdev(netdev); |
|
1157 } |
|
1158 |
|
1159 e1000_phy_hw_reset(hw); |
|
1160 |
|
1161 kfree(adapter->tx_ring); |
|
1162 kfree(adapter->rx_ring); |
|
1163 |
|
1164 iounmap(hw->hw_addr); |
|
1165 if (hw->flash_address) |
|
1166 iounmap(hw->flash_address); |
|
1167 pci_release_selected_regions(pdev, adapter->bars); |
|
1168 |
|
1169 free_netdev(netdev); |
|
1170 |
|
1171 pci_disable_device(pdev); |
|
1172 } |
|
1173 |
|
1174 /** |
|
1175 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1176 * @adapter: board private structure to initialize |
|
1177 * |
|
1178 * e1000_sw_init initializes the Adapter private data structure. |
|
1179 * Fields are initialized based on PCI device information and |
|
1180 * OS network device settings (MTU size). |
|
1181 **/ |
|
1182 |
|
1183 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
1184 { |
|
1185 struct e1000_hw *hw = &adapter->hw; |
|
1186 struct net_device *netdev = adapter->netdev; |
|
1187 struct pci_dev *pdev = adapter->pdev; |
|
1188 |
|
1189 /* PCI config space info */ |
|
1190 |
|
1191 hw->vendor_id = pdev->vendor; |
|
1192 hw->device_id = pdev->device; |
|
1193 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
1194 hw->subsystem_id = pdev->subsystem_device; |
|
1195 hw->revision_id = pdev->revision; |
|
1196 |
|
1197 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
1198 |
|
1199 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1200 hw->max_frame_size = netdev->mtu + |
|
1201 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
1202 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
1203 |
|
1204 /* identify the MAC */ |
|
1205 |
|
1206 if (e1000_set_mac_type(hw)) { |
|
1207 DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
|
1208 return -EIO; |
|
1209 } |
|
1210 |
|
1211 switch (hw->mac_type) { |
|
1212 default: |
|
1213 break; |
|
1214 case e1000_82541: |
|
1215 case e1000_82547: |
|
1216 case e1000_82541_rev_2: |
|
1217 case e1000_82547_rev_2: |
|
1218 hw->phy_init_script = 1; |
|
1219 break; |
|
1220 } |
|
1221 |
|
1222 e1000_set_media_type(hw); |
|
1223 |
|
1224 hw->wait_autoneg_complete = false; |
|
1225 hw->tbi_compatibility_en = true; |
|
1226 hw->adaptive_ifs = true; |
|
1227 |
|
1228 /* Copper options */ |
|
1229 |
|
1230 if (hw->media_type == e1000_media_type_copper) { |
|
1231 hw->mdix = AUTO_ALL_MODES; |
|
1232 hw->disable_polarity_correction = false; |
|
1233 hw->master_slave = E1000_MASTER_SLAVE; |
|
1234 } |
|
1235 |
|
1236 adapter->num_tx_queues = 1; |
|
1237 adapter->num_rx_queues = 1; |
|
1238 |
|
1239 if (e1000_alloc_queues(adapter)) { |
|
1240 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); |
|
1241 return -ENOMEM; |
|
1242 } |
|
1243 |
|
1244 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1245 e1000_irq_disable(adapter); |
|
1246 |
|
1247 spin_lock_init(&adapter->stats_lock); |
|
1248 |
|
1249 set_bit(__E1000_DOWN, &adapter->flags); |
|
1250 |
|
1251 return 0; |
|
1252 } |
|
1253 |
|
1254 /** |
|
1255 * e1000_alloc_queues - Allocate memory for all rings |
|
1256 * @adapter: board private structure to initialize |
|
1257 * |
|
1258 * We allocate one ring per queue at run-time since we don't know the |
|
1259 * number of queues at compile-time. |
|
1260 **/ |
|
1261 |
|
1262 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1263 { |
|
1264 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1265 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1266 if (!adapter->tx_ring) |
|
1267 return -ENOMEM; |
|
1268 |
|
1269 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1270 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1271 if (!adapter->rx_ring) { |
|
1272 kfree(adapter->tx_ring); |
|
1273 return -ENOMEM; |
|
1274 } |
|
1275 |
|
1276 return E1000_SUCCESS; |
|
1277 } |
|
1278 |
|
1279 /** |
|
1280 * e1000_open - Called when a network interface is made active |
|
1281 * @netdev: network interface device structure |
|
1282 * |
|
1283 * Returns 0 on success, negative value on failure |
|
1284 * |
|
1285 * The open entry point is called when a network interface is made |
|
1286 * active by the system (IFF_UP). At this point all resources needed |
|
1287 * for transmit and receive operations are allocated, the interrupt |
|
1288 * handler is registered with the OS, the watchdog timer is started, |
|
1289 * and the stack is notified that the interface is ready. |
|
1290 **/ |
|
1291 |
|
1292 static int e1000_open(struct net_device *netdev) |
|
1293 { |
|
1294 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1295 struct e1000_hw *hw = &adapter->hw; |
|
1296 int err; |
|
1297 |
|
1298 /* disallow open during test */ |
|
1299 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1300 return -EBUSY; |
|
1301 |
|
1302 netif_carrier_off(netdev); |
|
1303 |
|
1304 /* allocate transmit descriptors */ |
|
1305 err = e1000_setup_all_tx_resources(adapter); |
|
1306 if (err) |
|
1307 goto err_setup_tx; |
|
1308 |
|
1309 /* allocate receive descriptors */ |
|
1310 err = e1000_setup_all_rx_resources(adapter); |
|
1311 if (err) |
|
1312 goto err_setup_rx; |
|
1313 |
|
1314 e1000_power_up_phy(adapter); |
|
1315 |
|
1316 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1317 if ((hw->mng_cookie.status & |
|
1318 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1319 e1000_update_mng_vlan(adapter); |
|
1320 } |
|
1321 |
|
1322 /* before we allocate an interrupt, we must be ready to handle it. |
|
1323 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1324 * as soon as we call pci_request_irq, so we have to setup our |
|
1325 * clean_rx handler before we do so. */ |
|
1326 e1000_configure(adapter); |
|
1327 |
|
1328 err = e1000_request_irq(adapter); |
|
1329 if (err) |
|
1330 goto err_req_irq; |
|
1331 |
|
1332 /* From here on the code is the same as e1000_up() */ |
|
1333 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1334 |
|
1335 napi_enable(&adapter->napi); |
|
1336 |
|
1337 e1000_irq_enable(adapter); |
|
1338 |
|
1339 netif_start_queue(netdev); |
|
1340 |
|
1341 /* fire a link status change interrupt to start the watchdog */ |
|
1342 ew32(ICS, E1000_ICS_LSC); |
|
1343 |
|
1344 return E1000_SUCCESS; |
|
1345 |
|
1346 err_req_irq: |
|
1347 e1000_power_down_phy(adapter); |
|
1348 e1000_free_all_rx_resources(adapter); |
|
1349 err_setup_rx: |
|
1350 e1000_free_all_tx_resources(adapter); |
|
1351 err_setup_tx: |
|
1352 e1000_reset(adapter); |
|
1353 |
|
1354 return err; |
|
1355 } |
|
1356 |
|
1357 /** |
|
1358 * e1000_close - Disables a network interface |
|
1359 * @netdev: network interface device structure |
|
1360 * |
|
1361 * Returns 0, this is not allowed to fail |
|
1362 * |
|
1363 * The close entry point is called when an interface is de-activated |
|
1364 * by the OS. The hardware is still under the drivers control, but |
|
1365 * needs to be disabled. A global MAC reset is issued to stop the |
|
1366 * hardware, and all transmit and receive resources are freed. |
|
1367 **/ |
|
1368 |
|
1369 static int e1000_close(struct net_device *netdev) |
|
1370 { |
|
1371 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1372 struct e1000_hw *hw = &adapter->hw; |
|
1373 |
|
1374 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1375 e1000_down(adapter); |
|
1376 e1000_power_down_phy(adapter); |
|
1377 e1000_free_irq(adapter); |
|
1378 |
|
1379 e1000_free_all_tx_resources(adapter); |
|
1380 e1000_free_all_rx_resources(adapter); |
|
1381 |
|
1382 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1383 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1384 if ((hw->mng_cookie.status & |
|
1385 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1386 !(adapter->vlgrp && |
|
1387 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1388 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1389 } |
|
1390 |
|
1391 return 0; |
|
1392 } |
|
1393 |
|
1394 /** |
|
1395 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1396 * @adapter: address of board private structure |
|
1397 * @start: address of beginning of memory |
|
1398 * @len: length of memory |
|
1399 **/ |
|
1400 static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
|
1401 unsigned long len) |
|
1402 { |
|
1403 struct e1000_hw *hw = &adapter->hw; |
|
1404 unsigned long begin = (unsigned long)start; |
|
1405 unsigned long end = begin + len; |
|
1406 |
|
1407 /* First rev 82545 and 82546 need to not allow any memory |
|
1408 * write location to cross 64k boundary due to errata 23 */ |
|
1409 if (hw->mac_type == e1000_82545 || |
|
1410 hw->mac_type == e1000_82546) { |
|
1411 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
|
1412 } |
|
1413 |
|
1414 return true; |
|
1415 } |
|
1416 |
|
1417 /** |
|
1418 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1419 * @adapter: board private structure |
|
1420 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1421 * |
|
1422 * Return 0 on success, negative on failure |
|
1423 **/ |
|
1424 |
|
1425 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1426 struct e1000_tx_ring *txdr) |
|
1427 { |
|
1428 struct pci_dev *pdev = adapter->pdev; |
|
1429 int size; |
|
1430 |
|
1431 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1432 txdr->buffer_info = vmalloc(size); |
|
1433 if (!txdr->buffer_info) { |
|
1434 DPRINTK(PROBE, ERR, |
|
1435 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1436 return -ENOMEM; |
|
1437 } |
|
1438 memset(txdr->buffer_info, 0, size); |
|
1439 |
|
1440 /* round up to nearest 4K */ |
|
1441 |
|
1442 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1443 txdr->size = ALIGN(txdr->size, 4096); |
|
1444 |
|
1445 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1446 if (!txdr->desc) { |
|
1447 setup_tx_desc_die: |
|
1448 vfree(txdr->buffer_info); |
|
1449 DPRINTK(PROBE, ERR, |
|
1450 "Unable to allocate memory for the transmit descriptor ring\n"); |
|
1451 return -ENOMEM; |
|
1452 } |
|
1453 |
|
1454 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1455 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1456 void *olddesc = txdr->desc; |
|
1457 dma_addr_t olddma = txdr->dma; |
|
1458 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
|
1459 "at %p\n", txdr->size, txdr->desc); |
|
1460 /* Try again, without freeing the previous */ |
|
1461 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
|
1462 /* Failed allocation, critical failure */ |
|
1463 if (!txdr->desc) { |
|
1464 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1465 goto setup_tx_desc_die; |
|
1466 } |
|
1467 |
|
1468 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1469 /* give up */ |
|
1470 pci_free_consistent(pdev, txdr->size, txdr->desc, |
|
1471 txdr->dma); |
|
1472 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1473 DPRINTK(PROBE, ERR, |
|
1474 "Unable to allocate aligned memory " |
|
1475 "for the transmit descriptor ring\n"); |
|
1476 vfree(txdr->buffer_info); |
|
1477 return -ENOMEM; |
|
1478 } else { |
|
1479 /* Free old allocation, new allocation was successful */ |
|
1480 pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
|
1481 } |
|
1482 } |
|
1483 memset(txdr->desc, 0, txdr->size); |
|
1484 |
|
1485 txdr->next_to_use = 0; |
|
1486 txdr->next_to_clean = 0; |
|
1487 |
|
1488 return 0; |
|
1489 } |
|
1490 |
|
1491 /** |
|
1492 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1493 * (Descriptors) for all queues |
|
1494 * @adapter: board private structure |
|
1495 * |
|
1496 * Return 0 on success, negative on failure |
|
1497 **/ |
|
1498 |
|
1499 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1500 { |
|
1501 int i, err = 0; |
|
1502 |
|
1503 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1504 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1505 if (err) { |
|
1506 DPRINTK(PROBE, ERR, |
|
1507 "Allocation for Tx Queue %u failed\n", i); |
|
1508 for (i-- ; i >= 0; i--) |
|
1509 e1000_free_tx_resources(adapter, |
|
1510 &adapter->tx_ring[i]); |
|
1511 break; |
|
1512 } |
|
1513 } |
|
1514 |
|
1515 return err; |
|
1516 } |
|
1517 |
|
1518 /** |
|
1519 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1520 * @adapter: board private structure |
|
1521 * |
|
1522 * Configure the Tx unit of the MAC after a reset. |
|
1523 **/ |
|
1524 |
|
1525 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
1526 { |
|
1527 u64 tdba; |
|
1528 struct e1000_hw *hw = &adapter->hw; |
|
1529 u32 tdlen, tctl, tipg; |
|
1530 u32 ipgr1, ipgr2; |
|
1531 |
|
1532 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1533 |
|
1534 switch (adapter->num_tx_queues) { |
|
1535 case 1: |
|
1536 default: |
|
1537 tdba = adapter->tx_ring[0].dma; |
|
1538 tdlen = adapter->tx_ring[0].count * |
|
1539 sizeof(struct e1000_tx_desc); |
|
1540 ew32(TDLEN, tdlen); |
|
1541 ew32(TDBAH, (tdba >> 32)); |
|
1542 ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1543 ew32(TDT, 0); |
|
1544 ew32(TDH, 0); |
|
1545 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1546 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1547 break; |
|
1548 } |
|
1549 |
|
1550 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1551 if ((hw->media_type == e1000_media_type_fiber || |
|
1552 hw->media_type == e1000_media_type_internal_serdes)) |
|
1553 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1554 else |
|
1555 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1556 |
|
1557 switch (hw->mac_type) { |
|
1558 case e1000_82542_rev2_0: |
|
1559 case e1000_82542_rev2_1: |
|
1560 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1561 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1562 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1563 break; |
|
1564 default: |
|
1565 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1566 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1567 break; |
|
1568 } |
|
1569 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1570 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1571 ew32(TIPG, tipg); |
|
1572 |
|
1573 /* Set the Tx Interrupt Delay register */ |
|
1574 |
|
1575 ew32(TIDV, adapter->tx_int_delay); |
|
1576 if (hw->mac_type >= e1000_82540) |
|
1577 ew32(TADV, adapter->tx_abs_int_delay); |
|
1578 |
|
1579 /* Program the Transmit Control Register */ |
|
1580 |
|
1581 tctl = er32(TCTL); |
|
1582 tctl &= ~E1000_TCTL_CT; |
|
1583 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1584 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1585 |
|
1586 e1000_config_collision_dist(hw); |
|
1587 |
|
1588 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1589 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1590 |
|
1591 /* only set IDE if we are delaying interrupts using the timers */ |
|
1592 if (adapter->tx_int_delay) |
|
1593 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1594 |
|
1595 if (hw->mac_type < e1000_82543) |
|
1596 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1597 else |
|
1598 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1599 |
|
1600 /* Cache if we're 82544 running in PCI-X because we'll |
|
1601 * need this to apply a workaround later in the send path. */ |
|
1602 if (hw->mac_type == e1000_82544 && |
|
1603 hw->bus_type == e1000_bus_type_pcix) |
|
1604 adapter->pcix_82544 = 1; |
|
1605 |
|
1606 ew32(TCTL, tctl); |
|
1607 |
|
1608 } |
|
1609 |
|
1610 /** |
|
1611 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1612 * @adapter: board private structure |
|
1613 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1614 * |
|
1615 * Returns 0 on success, negative on failure |
|
1616 **/ |
|
1617 |
|
1618 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1619 struct e1000_rx_ring *rxdr) |
|
1620 { |
|
1621 struct pci_dev *pdev = adapter->pdev; |
|
1622 int size, desc_len; |
|
1623 |
|
1624 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1625 rxdr->buffer_info = vmalloc(size); |
|
1626 if (!rxdr->buffer_info) { |
|
1627 DPRINTK(PROBE, ERR, |
|
1628 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1629 return -ENOMEM; |
|
1630 } |
|
1631 memset(rxdr->buffer_info, 0, size); |
|
1632 |
|
1633 desc_len = sizeof(struct e1000_rx_desc); |
|
1634 |
|
1635 /* Round up to nearest 4K */ |
|
1636 |
|
1637 rxdr->size = rxdr->count * desc_len; |
|
1638 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1639 |
|
1640 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1641 |
|
1642 if (!rxdr->desc) { |
|
1643 DPRINTK(PROBE, ERR, |
|
1644 "Unable to allocate memory for the receive descriptor ring\n"); |
|
1645 setup_rx_desc_die: |
|
1646 vfree(rxdr->buffer_info); |
|
1647 return -ENOMEM; |
|
1648 } |
|
1649 |
|
1650 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1651 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1652 void *olddesc = rxdr->desc; |
|
1653 dma_addr_t olddma = rxdr->dma; |
|
1654 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
|
1655 "at %p\n", rxdr->size, rxdr->desc); |
|
1656 /* Try again, without freeing the previous */ |
|
1657 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
|
1658 /* Failed allocation, critical failure */ |
|
1659 if (!rxdr->desc) { |
|
1660 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1661 DPRINTK(PROBE, ERR, |
|
1662 "Unable to allocate memory " |
|
1663 "for the receive descriptor ring\n"); |
|
1664 goto setup_rx_desc_die; |
|
1665 } |
|
1666 |
|
1667 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1668 /* give up */ |
|
1669 pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
|
1670 rxdr->dma); |
|
1671 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1672 DPRINTK(PROBE, ERR, |
|
1673 "Unable to allocate aligned memory " |
|
1674 "for the receive descriptor ring\n"); |
|
1675 goto setup_rx_desc_die; |
|
1676 } else { |
|
1677 /* Free old allocation, new allocation was successful */ |
|
1678 pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
|
1679 } |
|
1680 } |
|
1681 memset(rxdr->desc, 0, rxdr->size); |
|
1682 |
|
1683 rxdr->next_to_clean = 0; |
|
1684 rxdr->next_to_use = 0; |
|
1685 rxdr->rx_skb_top = NULL; |
|
1686 |
|
1687 return 0; |
|
1688 } |
|
1689 |
|
1690 /** |
|
1691 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1692 * (Descriptors) for all queues |
|
1693 * @adapter: board private structure |
|
1694 * |
|
1695 * Return 0 on success, negative on failure |
|
1696 **/ |
|
1697 |
|
1698 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1699 { |
|
1700 int i, err = 0; |
|
1701 |
|
1702 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1703 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1704 if (err) { |
|
1705 DPRINTK(PROBE, ERR, |
|
1706 "Allocation for Rx Queue %u failed\n", i); |
|
1707 for (i-- ; i >= 0; i--) |
|
1708 e1000_free_rx_resources(adapter, |
|
1709 &adapter->rx_ring[i]); |
|
1710 break; |
|
1711 } |
|
1712 } |
|
1713 |
|
1714 return err; |
|
1715 } |
|
1716 |
|
1717 /** |
|
1718 * e1000_setup_rctl - configure the receive control registers |
|
1719 * @adapter: Board private structure |
|
1720 **/ |
|
1721 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1722 { |
|
1723 struct e1000_hw *hw = &adapter->hw; |
|
1724 u32 rctl; |
|
1725 |
|
1726 rctl = er32(RCTL); |
|
1727 |
|
1728 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1729 |
|
1730 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1731 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1732 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1733 |
|
1734 if (hw->tbi_compatibility_on == 1) |
|
1735 rctl |= E1000_RCTL_SBP; |
|
1736 else |
|
1737 rctl &= ~E1000_RCTL_SBP; |
|
1738 |
|
1739 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1740 rctl &= ~E1000_RCTL_LPE; |
|
1741 else |
|
1742 rctl |= E1000_RCTL_LPE; |
|
1743 |
|
1744 /* Setup buffer sizes */ |
|
1745 rctl &= ~E1000_RCTL_SZ_4096; |
|
1746 rctl |= E1000_RCTL_BSEX; |
|
1747 switch (adapter->rx_buffer_len) { |
|
1748 case E1000_RXBUFFER_2048: |
|
1749 default: |
|
1750 rctl |= E1000_RCTL_SZ_2048; |
|
1751 rctl &= ~E1000_RCTL_BSEX; |
|
1752 break; |
|
1753 case E1000_RXBUFFER_4096: |
|
1754 rctl |= E1000_RCTL_SZ_4096; |
|
1755 break; |
|
1756 case E1000_RXBUFFER_8192: |
|
1757 rctl |= E1000_RCTL_SZ_8192; |
|
1758 break; |
|
1759 case E1000_RXBUFFER_16384: |
|
1760 rctl |= E1000_RCTL_SZ_16384; |
|
1761 break; |
|
1762 } |
|
1763 |
|
1764 ew32(RCTL, rctl); |
|
1765 } |
|
1766 |
|
1767 /** |
|
1768 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
1769 * @adapter: board private structure |
|
1770 * |
|
1771 * Configure the Rx unit of the MAC after a reset. |
|
1772 **/ |
|
1773 |
|
1774 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
1775 { |
|
1776 u64 rdba; |
|
1777 struct e1000_hw *hw = &adapter->hw; |
|
1778 u32 rdlen, rctl, rxcsum; |
|
1779 |
|
1780 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
1781 rdlen = adapter->rx_ring[0].count * |
|
1782 sizeof(struct e1000_rx_desc); |
|
1783 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
1784 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
1785 } else { |
|
1786 rdlen = adapter->rx_ring[0].count * |
|
1787 sizeof(struct e1000_rx_desc); |
|
1788 adapter->clean_rx = e1000_clean_rx_irq; |
|
1789 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
1790 } |
|
1791 |
|
1792 /* disable receives while setting up the descriptors */ |
|
1793 rctl = er32(RCTL); |
|
1794 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1795 |
|
1796 /* set the Receive Delay Timer Register */ |
|
1797 ew32(RDTR, adapter->rx_int_delay); |
|
1798 |
|
1799 if (hw->mac_type >= e1000_82540) { |
|
1800 ew32(RADV, adapter->rx_abs_int_delay); |
|
1801 if (adapter->itr_setting != 0) |
|
1802 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
1803 } |
|
1804 |
|
1805 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
1806 * the Base and Length of the Rx Descriptor Ring */ |
|
1807 switch (adapter->num_rx_queues) { |
|
1808 case 1: |
|
1809 default: |
|
1810 rdba = adapter->rx_ring[0].dma; |
|
1811 ew32(RDLEN, rdlen); |
|
1812 ew32(RDBAH, (rdba >> 32)); |
|
1813 ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
1814 ew32(RDT, 0); |
|
1815 ew32(RDH, 0); |
|
1816 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
1817 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
1818 break; |
|
1819 } |
|
1820 |
|
1821 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
1822 if (hw->mac_type >= e1000_82543) { |
|
1823 rxcsum = er32(RXCSUM); |
|
1824 if (adapter->rx_csum) |
|
1825 rxcsum |= E1000_RXCSUM_TUOFL; |
|
1826 else |
|
1827 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
1828 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
1829 ew32(RXCSUM, rxcsum); |
|
1830 } |
|
1831 |
|
1832 /* Enable Receives */ |
|
1833 ew32(RCTL, rctl); |
|
1834 } |
|
1835 |
|
1836 /** |
|
1837 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
1838 * @adapter: board private structure |
|
1839 * @tx_ring: Tx descriptor ring for a specific queue |
|
1840 * |
|
1841 * Free all transmit software resources |
|
1842 **/ |
|
1843 |
|
1844 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
1845 struct e1000_tx_ring *tx_ring) |
|
1846 { |
|
1847 struct pci_dev *pdev = adapter->pdev; |
|
1848 |
|
1849 e1000_clean_tx_ring(adapter, tx_ring); |
|
1850 |
|
1851 vfree(tx_ring->buffer_info); |
|
1852 tx_ring->buffer_info = NULL; |
|
1853 |
|
1854 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
|
1855 |
|
1856 tx_ring->desc = NULL; |
|
1857 } |
|
1858 |
|
1859 /** |
|
1860 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
1861 * @adapter: board private structure |
|
1862 * |
|
1863 * Free all transmit software resources |
|
1864 **/ |
|
1865 |
|
1866 void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
1867 { |
|
1868 int i; |
|
1869 |
|
1870 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1871 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1872 } |
|
1873 |
|
1874 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
1875 struct e1000_buffer *buffer_info) |
|
1876 { |
|
1877 if (adapter->ecdev) |
|
1878 return; |
|
1879 |
|
1880 if (buffer_info->dma) { |
|
1881 if (buffer_info->mapped_as_page) |
|
1882 pci_unmap_page(adapter->pdev, buffer_info->dma, |
|
1883 buffer_info->length, PCI_DMA_TODEVICE); |
|
1884 else |
|
1885 pci_unmap_single(adapter->pdev, buffer_info->dma, |
|
1886 buffer_info->length, |
|
1887 PCI_DMA_TODEVICE); |
|
1888 buffer_info->dma = 0; |
|
1889 } |
|
1890 if (buffer_info->skb) { |
|
1891 dev_kfree_skb_any(buffer_info->skb); |
|
1892 buffer_info->skb = NULL; |
|
1893 } |
|
1894 buffer_info->time_stamp = 0; |
|
1895 /* buffer_info must be completely set up in the transmit path */ |
|
1896 } |
|
1897 |
|
1898 /** |
|
1899 * e1000_clean_tx_ring - Free Tx Buffers |
|
1900 * @adapter: board private structure |
|
1901 * @tx_ring: ring to be cleaned |
|
1902 **/ |
|
1903 |
|
1904 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
1905 struct e1000_tx_ring *tx_ring) |
|
1906 { |
|
1907 struct e1000_hw *hw = &adapter->hw; |
|
1908 struct e1000_buffer *buffer_info; |
|
1909 unsigned long size; |
|
1910 unsigned int i; |
|
1911 |
|
1912 /* Free all the Tx ring sk_buffs */ |
|
1913 |
|
1914 for (i = 0; i < tx_ring->count; i++) { |
|
1915 buffer_info = &tx_ring->buffer_info[i]; |
|
1916 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
1917 } |
|
1918 |
|
1919 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
1920 memset(tx_ring->buffer_info, 0, size); |
|
1921 |
|
1922 /* Zero out the descriptor ring */ |
|
1923 |
|
1924 memset(tx_ring->desc, 0, tx_ring->size); |
|
1925 |
|
1926 tx_ring->next_to_use = 0; |
|
1927 tx_ring->next_to_clean = 0; |
|
1928 tx_ring->last_tx_tso = 0; |
|
1929 |
|
1930 writel(0, hw->hw_addr + tx_ring->tdh); |
|
1931 writel(0, hw->hw_addr + tx_ring->tdt); |
|
1932 } |
|
1933 |
|
1934 /** |
|
1935 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
1936 * @adapter: board private structure |
|
1937 **/ |
|
1938 |
|
1939 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
1940 { |
|
1941 int i; |
|
1942 |
|
1943 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1944 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
1945 } |
|
1946 |
|
1947 /** |
|
1948 * e1000_free_rx_resources - Free Rx Resources |
|
1949 * @adapter: board private structure |
|
1950 * @rx_ring: ring to clean the resources from |
|
1951 * |
|
1952 * Free all receive software resources |
|
1953 **/ |
|
1954 |
|
1955 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
1956 struct e1000_rx_ring *rx_ring) |
|
1957 { |
|
1958 struct pci_dev *pdev = adapter->pdev; |
|
1959 |
|
1960 e1000_clean_rx_ring(adapter, rx_ring); |
|
1961 |
|
1962 vfree(rx_ring->buffer_info); |
|
1963 rx_ring->buffer_info = NULL; |
|
1964 |
|
1965 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
|
1966 |
|
1967 rx_ring->desc = NULL; |
|
1968 } |
|
1969 |
|
1970 /** |
|
1971 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
1972 * @adapter: board private structure |
|
1973 * |
|
1974 * Free all receive software resources |
|
1975 **/ |
|
1976 |
|
1977 void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
1978 { |
|
1979 int i; |
|
1980 |
|
1981 for (i = 0; i < adapter->num_rx_queues; i++) |
|
1982 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1983 } |
|
1984 |
|
1985 /** |
|
1986 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
1987 * @adapter: board private structure |
|
1988 * @rx_ring: ring to free buffers from |
|
1989 **/ |
|
1990 |
|
1991 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
1992 struct e1000_rx_ring *rx_ring) |
|
1993 { |
|
1994 struct e1000_hw *hw = &adapter->hw; |
|
1995 struct e1000_buffer *buffer_info; |
|
1996 struct pci_dev *pdev = adapter->pdev; |
|
1997 unsigned long size; |
|
1998 unsigned int i; |
|
1999 |
|
2000 /* Free all the Rx ring sk_buffs */ |
|
2001 for (i = 0; i < rx_ring->count; i++) { |
|
2002 buffer_info = &rx_ring->buffer_info[i]; |
|
2003 if (buffer_info->dma && |
|
2004 adapter->clean_rx == e1000_clean_rx_irq) { |
|
2005 pci_unmap_single(pdev, buffer_info->dma, |
|
2006 buffer_info->length, |
|
2007 PCI_DMA_FROMDEVICE); |
|
2008 } else if (buffer_info->dma && |
|
2009 adapter->clean_rx == e1000_clean_jumbo_rx_irq) { |
|
2010 pci_unmap_page(pdev, buffer_info->dma, |
|
2011 buffer_info->length, |
|
2012 PCI_DMA_FROMDEVICE); |
|
2013 } |
|
2014 |
|
2015 buffer_info->dma = 0; |
|
2016 if (buffer_info->page) { |
|
2017 put_page(buffer_info->page); |
|
2018 buffer_info->page = NULL; |
|
2019 } |
|
2020 if (buffer_info->skb) { |
|
2021 dev_kfree_skb(buffer_info->skb); |
|
2022 buffer_info->skb = NULL; |
|
2023 } |
|
2024 } |
|
2025 |
|
2026 /* there also may be some cached data from a chained receive */ |
|
2027 if (rx_ring->rx_skb_top) { |
|
2028 dev_kfree_skb(rx_ring->rx_skb_top); |
|
2029 rx_ring->rx_skb_top = NULL; |
|
2030 } |
|
2031 |
|
2032 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2033 memset(rx_ring->buffer_info, 0, size); |
|
2034 |
|
2035 /* Zero out the descriptor ring */ |
|
2036 memset(rx_ring->desc, 0, rx_ring->size); |
|
2037 |
|
2038 rx_ring->next_to_clean = 0; |
|
2039 rx_ring->next_to_use = 0; |
|
2040 |
|
2041 writel(0, hw->hw_addr + rx_ring->rdh); |
|
2042 writel(0, hw->hw_addr + rx_ring->rdt); |
|
2043 } |
|
2044 |
|
2045 /** |
|
2046 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
2047 * @adapter: board private structure |
|
2048 **/ |
|
2049 |
|
2050 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
2051 { |
|
2052 int i; |
|
2053 |
|
2054 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2055 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
2056 } |
|
2057 |
|
2058 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2059 * and memory write and invalidate disabled for certain operations |
|
2060 */ |
|
2061 static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2062 { |
|
2063 struct e1000_hw *hw = &adapter->hw; |
|
2064 struct net_device *netdev = adapter->netdev; |
|
2065 u32 rctl; |
|
2066 |
|
2067 e1000_pci_clear_mwi(hw); |
|
2068 |
|
2069 rctl = er32(RCTL); |
|
2070 rctl |= E1000_RCTL_RST; |
|
2071 ew32(RCTL, rctl); |
|
2072 E1000_WRITE_FLUSH(); |
|
2073 mdelay(5); |
|
2074 |
|
2075 if (!adapter->ecdev && netif_running(netdev)) |
|
2076 e1000_clean_all_rx_rings(adapter); |
|
2077 } |
|
2078 |
|
2079 static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2080 { |
|
2081 struct e1000_hw *hw = &adapter->hw; |
|
2082 struct net_device *netdev = adapter->netdev; |
|
2083 u32 rctl; |
|
2084 |
|
2085 rctl = er32(RCTL); |
|
2086 rctl &= ~E1000_RCTL_RST; |
|
2087 ew32(RCTL, rctl); |
|
2088 E1000_WRITE_FLUSH(); |
|
2089 mdelay(5); |
|
2090 |
|
2091 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2092 e1000_pci_set_mwi(hw); |
|
2093 |
|
2094 if (!adapter->netdev && netif_running(netdev)) { |
|
2095 /* No need to loop, because 82542 supports only 1 queue */ |
|
2096 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2097 e1000_configure_rx(adapter); |
|
2098 if (adapter->ecdev) { |
|
2099 /* fill rx ring completely! */ |
|
2100 adapter->alloc_rx_buf(adapter, ring, ring->count); |
|
2101 } else { |
|
2102 /* this one leaves the last ring element unallocated! */ |
|
2103 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2104 } |
|
2105 |
|
2106 } |
|
2107 } |
|
2108 |
|
2109 /** |
|
2110 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2111 * @netdev: network interface device structure |
|
2112 * @p: pointer to an address structure |
|
2113 * |
|
2114 * Returns 0 on success, negative on failure |
|
2115 **/ |
|
2116 |
|
2117 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
2118 { |
|
2119 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2120 struct e1000_hw *hw = &adapter->hw; |
|
2121 struct sockaddr *addr = p; |
|
2122 |
|
2123 if (!is_valid_ether_addr(addr->sa_data)) |
|
2124 return -EADDRNOTAVAIL; |
|
2125 |
|
2126 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2127 |
|
2128 if (hw->mac_type == e1000_82542_rev2_0) |
|
2129 e1000_enter_82542_rst(adapter); |
|
2130 |
|
2131 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2132 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
|
2133 |
|
2134 e1000_rar_set(hw, hw->mac_addr, 0); |
|
2135 |
|
2136 if (hw->mac_type == e1000_82542_rev2_0) |
|
2137 e1000_leave_82542_rst(adapter); |
|
2138 |
|
2139 return 0; |
|
2140 } |
|
2141 |
|
2142 /** |
|
2143 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
|
2144 * @netdev: network interface device structure |
|
2145 * |
|
2146 * The set_rx_mode entry point is called whenever the unicast or multicast |
|
2147 * address lists or the network interface flags are updated. This routine is |
|
2148 * responsible for configuring the hardware for proper unicast, multicast, |
|
2149 * promiscuous mode, and all-multi behavior. |
|
2150 **/ |
|
2151 |
|
2152 static void e1000_set_rx_mode(struct net_device *netdev) |
|
2153 { |
|
2154 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2155 struct e1000_hw *hw = &adapter->hw; |
|
2156 struct netdev_hw_addr *ha; |
|
2157 bool use_uc = false; |
|
2158 struct dev_addr_list *mc_ptr; |
|
2159 u32 rctl; |
|
2160 u32 hash_value; |
|
2161 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2162 int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
|
2163 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
|
2164 |
|
2165 if (!mcarray) { |
|
2166 DPRINTK(PROBE, ERR, "memory allocation failed\n"); |
|
2167 return; |
|
2168 } |
|
2169 |
|
2170 /* Check for Promiscuous and All Multicast modes */ |
|
2171 |
|
2172 rctl = er32(RCTL); |
|
2173 |
|
2174 if (netdev->flags & IFF_PROMISC) { |
|
2175 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2176 rctl &= ~E1000_RCTL_VFE; |
|
2177 } else { |
|
2178 if (netdev->flags & IFF_ALLMULTI) |
|
2179 rctl |= E1000_RCTL_MPE; |
|
2180 else |
|
2181 rctl &= ~E1000_RCTL_MPE; |
|
2182 /* Enable VLAN filter if there is a VLAN */ |
|
2183 if (adapter->vlgrp) |
|
2184 rctl |= E1000_RCTL_VFE; |
|
2185 } |
|
2186 |
|
2187 if (netdev->uc.count > rar_entries - 1) { |
|
2188 rctl |= E1000_RCTL_UPE; |
|
2189 } else if (!(netdev->flags & IFF_PROMISC)) { |
|
2190 rctl &= ~E1000_RCTL_UPE; |
|
2191 use_uc = true; |
|
2192 } |
|
2193 |
|
2194 ew32(RCTL, rctl); |
|
2195 |
|
2196 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2197 |
|
2198 if (hw->mac_type == e1000_82542_rev2_0) |
|
2199 e1000_enter_82542_rst(adapter); |
|
2200 |
|
2201 /* load the first 14 addresses into the exact filters 1-14. Unicast |
|
2202 * addresses take precedence to avoid disabling unicast filtering |
|
2203 * when possible. |
|
2204 * |
|
2205 * RAR 0 is used for the station MAC adddress |
|
2206 * if there are not 14 addresses, go ahead and clear the filters |
|
2207 */ |
|
2208 i = 1; |
|
2209 if (use_uc) |
|
2210 list_for_each_entry(ha, &netdev->uc.list, list) { |
|
2211 if (i == rar_entries) |
|
2212 break; |
|
2213 e1000_rar_set(hw, ha->addr, i++); |
|
2214 } |
|
2215 |
|
2216 WARN_ON(i == rar_entries); |
|
2217 |
|
2218 mc_ptr = netdev->mc_list; |
|
2219 |
|
2220 for (; i < rar_entries; i++) { |
|
2221 if (mc_ptr) { |
|
2222 e1000_rar_set(hw, mc_ptr->da_addr, i); |
|
2223 mc_ptr = mc_ptr->next; |
|
2224 } else { |
|
2225 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2226 E1000_WRITE_FLUSH(); |
|
2227 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2228 E1000_WRITE_FLUSH(); |
|
2229 } |
|
2230 } |
|
2231 |
|
2232 /* load any remaining addresses into the hash table */ |
|
2233 |
|
2234 for (; mc_ptr; mc_ptr = mc_ptr->next) { |
|
2235 u32 hash_reg, hash_bit, mta; |
|
2236 hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr); |
|
2237 hash_reg = (hash_value >> 5) & 0x7F; |
|
2238 hash_bit = hash_value & 0x1F; |
|
2239 mta = (1 << hash_bit); |
|
2240 mcarray[hash_reg] |= mta; |
|
2241 } |
|
2242 |
|
2243 /* write the hash table completely, write from bottom to avoid |
|
2244 * both stupid write combining chipsets, and flushing each write */ |
|
2245 for (i = mta_reg_count - 1; i >= 0 ; i--) { |
|
2246 /* |
|
2247 * If we are on an 82544 has an errata where writing odd |
|
2248 * offsets overwrites the previous even offset, but writing |
|
2249 * backwards over the range solves the issue by always |
|
2250 * writing the odd offset first |
|
2251 */ |
|
2252 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); |
|
2253 } |
|
2254 E1000_WRITE_FLUSH(); |
|
2255 |
|
2256 if (hw->mac_type == e1000_82542_rev2_0) |
|
2257 e1000_leave_82542_rst(adapter); |
|
2258 |
|
2259 kfree(mcarray); |
|
2260 } |
|
2261 |
|
2262 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2263 * the phy */ |
|
2264 |
|
2265 static void e1000_update_phy_info(unsigned long data) |
|
2266 { |
|
2267 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2268 struct e1000_hw *hw = &adapter->hw; |
|
2269 e1000_phy_get_info(hw, &adapter->phy_info); |
|
2270 } |
|
2271 |
|
2272 /** |
|
2273 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2274 * @data: pointer to adapter cast into an unsigned long |
|
2275 **/ |
|
2276 |
|
2277 static void e1000_82547_tx_fifo_stall(unsigned long data) |
|
2278 { |
|
2279 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2280 struct e1000_hw *hw = &adapter->hw; |
|
2281 struct net_device *netdev = adapter->netdev; |
|
2282 u32 tctl; |
|
2283 |
|
2284 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2285 if ((er32(TDT) == er32(TDH)) && |
|
2286 (er32(TDFT) == er32(TDFH)) && |
|
2287 (er32(TDFTS) == er32(TDFHS))) { |
|
2288 tctl = er32(TCTL); |
|
2289 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
2290 ew32(TDFT, adapter->tx_head_addr); |
|
2291 ew32(TDFH, adapter->tx_head_addr); |
|
2292 ew32(TDFTS, adapter->tx_head_addr); |
|
2293 ew32(TDFHS, adapter->tx_head_addr); |
|
2294 ew32(TCTL, tctl); |
|
2295 E1000_WRITE_FLUSH(); |
|
2296 |
|
2297 adapter->tx_fifo_head = 0; |
|
2298 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2299 if (!adapter->ecdev) netif_wake_queue(netdev); |
|
2300 } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
|
2301 if (!adapter->ecdev) |
|
2302 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2303 } |
|
2304 } |
|
2305 } |
|
2306 |
|
2307 static bool e1000_has_link(struct e1000_adapter *adapter) |
|
2308 { |
|
2309 struct e1000_hw *hw = &adapter->hw; |
|
2310 bool link_active = false; |
|
2311 |
|
2312 /* get_link_status is set on LSC (link status) interrupt or |
|
2313 * rx sequence error interrupt. get_link_status will stay |
|
2314 * false until the e1000_check_for_link establishes link |
|
2315 * for copper adapters ONLY |
|
2316 */ |
|
2317 switch (hw->media_type) { |
|
2318 case e1000_media_type_copper: |
|
2319 if (hw->get_link_status) { |
|
2320 e1000_check_for_link(hw); |
|
2321 link_active = !hw->get_link_status; |
|
2322 } else { |
|
2323 link_active = true; |
|
2324 } |
|
2325 break; |
|
2326 case e1000_media_type_fiber: |
|
2327 e1000_check_for_link(hw); |
|
2328 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
2329 break; |
|
2330 case e1000_media_type_internal_serdes: |
|
2331 e1000_check_for_link(hw); |
|
2332 link_active = hw->serdes_has_link; |
|
2333 break; |
|
2334 default: |
|
2335 break; |
|
2336 } |
|
2337 |
|
2338 return link_active; |
|
2339 } |
|
2340 |
|
2341 /** |
|
2342 * e1000_watchdog - Timer Call-back |
|
2343 * @data: pointer to adapter cast into an unsigned long |
|
2344 **/ |
|
2345 static void e1000_watchdog(unsigned long data) |
|
2346 { |
|
2347 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2348 struct e1000_hw *hw = &adapter->hw; |
|
2349 struct net_device *netdev = adapter->netdev; |
|
2350 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2351 u32 link, tctl; |
|
2352 |
|
2353 link = e1000_has_link(adapter); |
|
2354 if (!adapter->ecdev && (netif_carrier_ok(netdev)) && link) |
|
2355 goto link_up; |
|
2356 |
|
2357 if (link) { |
|
2358 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
2359 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
2360 u32 ctrl; |
|
2361 bool txb2b = true; |
|
2362 /* update snapshot of PHY registers on LSC */ |
|
2363 e1000_get_speed_and_duplex(hw, |
|
2364 &adapter->link_speed, |
|
2365 &adapter->link_duplex); |
|
2366 |
|
2367 ctrl = er32(CTRL); |
|
2368 printk(KERN_INFO "e1000: %s NIC Link is Up %d Mbps %s, " |
|
2369 "Flow Control: %s\n", |
|
2370 netdev->name, |
|
2371 adapter->link_speed, |
|
2372 adapter->link_duplex == FULL_DUPLEX ? |
|
2373 "Full Duplex" : "Half Duplex", |
|
2374 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2375 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2376 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2377 E1000_CTRL_TFCE) ? "TX" : "None" ))); |
|
2378 |
|
2379 /* tweak tx_queue_len according to speed/duplex |
|
2380 * and adjust the timeout factor */ |
|
2381 netdev->tx_queue_len = adapter->tx_queue_len; |
|
2382 adapter->tx_timeout_factor = 1; |
|
2383 switch (adapter->link_speed) { |
|
2384 case SPEED_10: |
|
2385 txb2b = false; |
|
2386 netdev->tx_queue_len = 10; |
|
2387 adapter->tx_timeout_factor = 16; |
|
2388 break; |
|
2389 case SPEED_100: |
|
2390 txb2b = false; |
|
2391 netdev->tx_queue_len = 100; |
|
2392 /* maybe add some timeout factor ? */ |
|
2393 break; |
|
2394 } |
|
2395 |
|
2396 /* enable transmits in the hardware */ |
|
2397 tctl = er32(TCTL); |
|
2398 tctl |= E1000_TCTL_EN; |
|
2399 ew32(TCTL, tctl); |
|
2400 |
|
2401 if (adapter->ecdev) { |
|
2402 ecdev_set_link(adapter->ecdev, 1); |
|
2403 } else { |
|
2404 netif_carrier_on(netdev); |
|
2405 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2406 mod_timer(&adapter->phy_info_timer, |
|
2407 round_jiffies(jiffies + 2 * HZ)); |
|
2408 } |
|
2409 adapter->smartspeed = 0; |
|
2410 } |
|
2411 } else { |
|
2412 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
2413 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
2414 adapter->link_speed = 0; |
|
2415 adapter->link_duplex = 0; |
|
2416 printk(KERN_INFO "e1000: %s NIC Link is Down\n", |
|
2417 netdev->name); |
|
2418 if (adapter->ecdev) { |
|
2419 ecdev_set_link(adapter->ecdev, 0); |
|
2420 } else { |
|
2421 netif_carrier_off(netdev); |
|
2422 |
|
2423 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2424 mod_timer(&adapter->phy_info_timer, |
|
2425 round_jiffies(jiffies + 2 * HZ)); |
|
2426 } |
|
2427 } |
|
2428 |
|
2429 e1000_smartspeed(adapter); |
|
2430 } |
|
2431 |
|
2432 link_up: |
|
2433 e1000_update_stats(adapter); |
|
2434 |
|
2435 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2436 adapter->tpt_old = adapter->stats.tpt; |
|
2437 hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2438 adapter->colc_old = adapter->stats.colc; |
|
2439 |
|
2440 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2441 adapter->gorcl_old = adapter->stats.gorcl; |
|
2442 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2443 adapter->gotcl_old = adapter->stats.gotcl; |
|
2444 |
|
2445 e1000_update_adaptive(hw); |
|
2446 |
|
2447 if (!adapter->ecdev && !netif_carrier_ok(netdev)) { |
|
2448 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2449 /* We've lost link, so the controller stops DMA, |
|
2450 * but we've got queued Tx work that's never going |
|
2451 * to get done, so reset controller to flush Tx. |
|
2452 * (Do the reset outside of interrupt context). */ |
|
2453 adapter->tx_timeout_count++; |
|
2454 schedule_work(&adapter->reset_task); |
|
2455 /* return immediately since reset is imminent */ |
|
2456 return; |
|
2457 } |
|
2458 } |
|
2459 |
|
2460 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2461 ew32(ICS, E1000_ICS_RXDMT0); |
|
2462 |
|
2463 /* Force detection of hung controller every watchdog period */ |
|
2464 if (!adapter->ecdev) adapter->detect_tx_hung = true; |
|
2465 |
|
2466 /* Reset the timer */ |
|
2467 if (!adapter->ecdev) { |
|
2468 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2469 mod_timer(&adapter->watchdog_timer, |
|
2470 round_jiffies(jiffies + 2 * HZ)); |
|
2471 } |
|
2472 } |
|
2473 |
|
2474 enum latency_range { |
|
2475 lowest_latency = 0, |
|
2476 low_latency = 1, |
|
2477 bulk_latency = 2, |
|
2478 latency_invalid = 255 |
|
2479 }; |
|
2480 |
|
2481 /** |
|
2482 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2483 * @adapter: pointer to adapter |
|
2484 * @itr_setting: current adapter->itr |
|
2485 * @packets: the number of packets during this measurement interval |
|
2486 * @bytes: the number of bytes during this measurement interval |
|
2487 * |
|
2488 * Stores a new ITR value based on packets and byte |
|
2489 * counts during the last interrupt. The advantage of per interrupt |
|
2490 * computation is faster updates and more accurate ITR for the current |
|
2491 * traffic pattern. Constants in this function were computed |
|
2492 * based on theoretical maximum wire speed and thresholds were set based |
|
2493 * on testing data as well as attempting to minimize response time |
|
2494 * while increasing bulk throughput. |
|
2495 * this functionality is controlled by the InterruptThrottleRate module |
|
2496 * parameter (see e1000_param.c) |
|
2497 **/ |
|
2498 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2499 u16 itr_setting, int packets, int bytes) |
|
2500 { |
|
2501 unsigned int retval = itr_setting; |
|
2502 struct e1000_hw *hw = &adapter->hw; |
|
2503 |
|
2504 if (unlikely(hw->mac_type < e1000_82540)) |
|
2505 goto update_itr_done; |
|
2506 |
|
2507 if (packets == 0) |
|
2508 goto update_itr_done; |
|
2509 |
|
2510 switch (itr_setting) { |
|
2511 case lowest_latency: |
|
2512 /* jumbo frames get bulk treatment*/ |
|
2513 if (bytes/packets > 8000) |
|
2514 retval = bulk_latency; |
|
2515 else if ((packets < 5) && (bytes > 512)) |
|
2516 retval = low_latency; |
|
2517 break; |
|
2518 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2519 if (bytes > 10000) { |
|
2520 /* jumbo frames need bulk latency setting */ |
|
2521 if (bytes/packets > 8000) |
|
2522 retval = bulk_latency; |
|
2523 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2524 retval = bulk_latency; |
|
2525 else if ((packets > 35)) |
|
2526 retval = lowest_latency; |
|
2527 } else if (bytes/packets > 2000) |
|
2528 retval = bulk_latency; |
|
2529 else if (packets <= 2 && bytes < 512) |
|
2530 retval = lowest_latency; |
|
2531 break; |
|
2532 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2533 if (bytes > 25000) { |
|
2534 if (packets > 35) |
|
2535 retval = low_latency; |
|
2536 } else if (bytes < 6000) { |
|
2537 retval = low_latency; |
|
2538 } |
|
2539 break; |
|
2540 } |
|
2541 |
|
2542 update_itr_done: |
|
2543 return retval; |
|
2544 } |
|
2545 |
|
2546 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2547 { |
|
2548 struct e1000_hw *hw = &adapter->hw; |
|
2549 u16 current_itr; |
|
2550 u32 new_itr = adapter->itr; |
|
2551 |
|
2552 if (unlikely(hw->mac_type < e1000_82540)) |
|
2553 return; |
|
2554 |
|
2555 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2556 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2557 current_itr = 0; |
|
2558 new_itr = 4000; |
|
2559 goto set_itr_now; |
|
2560 } |
|
2561 |
|
2562 adapter->tx_itr = e1000_update_itr(adapter, |
|
2563 adapter->tx_itr, |
|
2564 adapter->total_tx_packets, |
|
2565 adapter->total_tx_bytes); |
|
2566 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2567 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2568 adapter->tx_itr = low_latency; |
|
2569 |
|
2570 adapter->rx_itr = e1000_update_itr(adapter, |
|
2571 adapter->rx_itr, |
|
2572 adapter->total_rx_packets, |
|
2573 adapter->total_rx_bytes); |
|
2574 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2575 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2576 adapter->rx_itr = low_latency; |
|
2577 |
|
2578 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2579 |
|
2580 switch (current_itr) { |
|
2581 /* counts and packets in update_itr are dependent on these numbers */ |
|
2582 case lowest_latency: |
|
2583 new_itr = 70000; |
|
2584 break; |
|
2585 case low_latency: |
|
2586 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2587 break; |
|
2588 case bulk_latency: |
|
2589 new_itr = 4000; |
|
2590 break; |
|
2591 default: |
|
2592 break; |
|
2593 } |
|
2594 |
|
2595 set_itr_now: |
|
2596 if (new_itr != adapter->itr) { |
|
2597 /* this attempts to bias the interrupt rate towards Bulk |
|
2598 * by adding intermediate steps when interrupt rate is |
|
2599 * increasing */ |
|
2600 new_itr = new_itr > adapter->itr ? |
|
2601 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2602 new_itr; |
|
2603 adapter->itr = new_itr; |
|
2604 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2605 } |
|
2606 |
|
2607 return; |
|
2608 } |
|
2609 |
|
2610 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2611 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2612 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2613 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2614 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2615 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2616 |
|
2617 static int e1000_tso(struct e1000_adapter *adapter, |
|
2618 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2619 { |
|
2620 struct e1000_context_desc *context_desc; |
|
2621 struct e1000_buffer *buffer_info; |
|
2622 unsigned int i; |
|
2623 u32 cmd_length = 0; |
|
2624 u16 ipcse = 0, tucse, mss; |
|
2625 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
2626 int err; |
|
2627 |
|
2628 if (skb_is_gso(skb)) { |
|
2629 if (skb_header_cloned(skb)) { |
|
2630 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2631 if (err) |
|
2632 return err; |
|
2633 } |
|
2634 |
|
2635 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2636 mss = skb_shinfo(skb)->gso_size; |
|
2637 if (skb->protocol == htons(ETH_P_IP)) { |
|
2638 struct iphdr *iph = ip_hdr(skb); |
|
2639 iph->tot_len = 0; |
|
2640 iph->check = 0; |
|
2641 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2642 iph->daddr, 0, |
|
2643 IPPROTO_TCP, |
|
2644 0); |
|
2645 cmd_length = E1000_TXD_CMD_IP; |
|
2646 ipcse = skb_transport_offset(skb) - 1; |
|
2647 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2648 ipv6_hdr(skb)->payload_len = 0; |
|
2649 tcp_hdr(skb)->check = |
|
2650 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2651 &ipv6_hdr(skb)->daddr, |
|
2652 0, IPPROTO_TCP, 0); |
|
2653 ipcse = 0; |
|
2654 } |
|
2655 ipcss = skb_network_offset(skb); |
|
2656 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2657 tucss = skb_transport_offset(skb); |
|
2658 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2659 tucse = 0; |
|
2660 |
|
2661 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2662 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2663 |
|
2664 i = tx_ring->next_to_use; |
|
2665 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2666 buffer_info = &tx_ring->buffer_info[i]; |
|
2667 |
|
2668 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2669 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2670 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2671 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2672 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2673 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2674 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2675 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2676 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2677 |
|
2678 buffer_info->time_stamp = jiffies; |
|
2679 buffer_info->next_to_watch = i; |
|
2680 |
|
2681 if (++i == tx_ring->count) i = 0; |
|
2682 tx_ring->next_to_use = i; |
|
2683 |
|
2684 return true; |
|
2685 } |
|
2686 return false; |
|
2687 } |
|
2688 |
|
2689 static bool e1000_tx_csum(struct e1000_adapter *adapter, |
|
2690 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2691 { |
|
2692 struct e1000_context_desc *context_desc; |
|
2693 struct e1000_buffer *buffer_info; |
|
2694 unsigned int i; |
|
2695 u8 css; |
|
2696 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
2697 |
|
2698 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
2699 return false; |
|
2700 |
|
2701 switch (skb->protocol) { |
|
2702 case cpu_to_be16(ETH_P_IP): |
|
2703 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
2704 cmd_len |= E1000_TXD_CMD_TCP; |
|
2705 break; |
|
2706 case cpu_to_be16(ETH_P_IPV6): |
|
2707 /* XXX not handling all IPV6 headers */ |
|
2708 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
2709 cmd_len |= E1000_TXD_CMD_TCP; |
|
2710 break; |
|
2711 default: |
|
2712 if (unlikely(net_ratelimit())) |
|
2713 DPRINTK(DRV, WARNING, |
|
2714 "checksum_partial proto=%x!\n", skb->protocol); |
|
2715 break; |
|
2716 } |
|
2717 |
|
2718 css = skb_transport_offset(skb); |
|
2719 |
|
2720 i = tx_ring->next_to_use; |
|
2721 buffer_info = &tx_ring->buffer_info[i]; |
|
2722 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2723 |
|
2724 context_desc->lower_setup.ip_config = 0; |
|
2725 context_desc->upper_setup.tcp_fields.tucss = css; |
|
2726 context_desc->upper_setup.tcp_fields.tucso = |
|
2727 css + skb->csum_offset; |
|
2728 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
2729 context_desc->tcp_seg_setup.data = 0; |
|
2730 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
2731 |
|
2732 buffer_info->time_stamp = jiffies; |
|
2733 buffer_info->next_to_watch = i; |
|
2734 |
|
2735 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2736 tx_ring->next_to_use = i; |
|
2737 |
|
2738 return true; |
|
2739 } |
|
2740 |
|
2741 #define E1000_MAX_TXD_PWR 12 |
|
2742 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
2743 |
|
2744 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
2745 struct e1000_tx_ring *tx_ring, |
|
2746 struct sk_buff *skb, unsigned int first, |
|
2747 unsigned int max_per_txd, unsigned int nr_frags, |
|
2748 unsigned int mss) |
|
2749 { |
|
2750 struct e1000_hw *hw = &adapter->hw; |
|
2751 struct pci_dev *pdev = adapter->pdev; |
|
2752 struct e1000_buffer *buffer_info; |
|
2753 unsigned int len = skb_headlen(skb); |
|
2754 unsigned int offset = 0, size, count = 0, i; |
|
2755 unsigned int f; |
|
2756 |
|
2757 i = tx_ring->next_to_use; |
|
2758 |
|
2759 while (len) { |
|
2760 buffer_info = &tx_ring->buffer_info[i]; |
|
2761 size = min(len, max_per_txd); |
|
2762 /* Workaround for Controller erratum -- |
|
2763 * descriptor for non-tso packet in a linear SKB that follows a |
|
2764 * tso gets written back prematurely before the data is fully |
|
2765 * DMA'd to the controller */ |
|
2766 if (!skb->data_len && tx_ring->last_tx_tso && |
|
2767 !skb_is_gso(skb)) { |
|
2768 tx_ring->last_tx_tso = 0; |
|
2769 size -= 4; |
|
2770 } |
|
2771 |
|
2772 /* Workaround for premature desc write-backs |
|
2773 * in TSO mode. Append 4-byte sentinel desc */ |
|
2774 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
2775 size -= 4; |
|
2776 /* work-around for errata 10 and it applies |
|
2777 * to all controllers in PCI-X mode |
|
2778 * The fix is to make sure that the first descriptor of a |
|
2779 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
2780 */ |
|
2781 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
2782 (size > 2015) && count == 0)) |
|
2783 size = 2015; |
|
2784 |
|
2785 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
2786 * terminating buffers within evenly-aligned dwords. */ |
|
2787 if (unlikely(adapter->pcix_82544 && |
|
2788 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
2789 size > 4)) |
|
2790 size -= 4; |
|
2791 |
|
2792 buffer_info->length = size; |
|
2793 /* set time_stamp *before* dma to help avoid a possible race */ |
|
2794 buffer_info->time_stamp = jiffies; |
|
2795 buffer_info->mapped_as_page = false; |
|
2796 buffer_info->dma = pci_map_single(pdev, skb->data + offset, |
|
2797 size, PCI_DMA_TODEVICE); |
|
2798 if (pci_dma_mapping_error(pdev, buffer_info->dma)) |
|
2799 goto dma_error; |
|
2800 buffer_info->next_to_watch = i; |
|
2801 |
|
2802 len -= size; |
|
2803 offset += size; |
|
2804 count++; |
|
2805 if (len) { |
|
2806 i++; |
|
2807 if (unlikely(i == tx_ring->count)) |
|
2808 i = 0; |
|
2809 } |
|
2810 } |
|
2811 |
|
2812 for (f = 0; f < nr_frags; f++) { |
|
2813 struct skb_frag_struct *frag; |
|
2814 |
|
2815 frag = &skb_shinfo(skb)->frags[f]; |
|
2816 len = frag->size; |
|
2817 offset = frag->page_offset; |
|
2818 |
|
2819 while (len) { |
|
2820 i++; |
|
2821 if (unlikely(i == tx_ring->count)) |
|
2822 i = 0; |
|
2823 |
|
2824 buffer_info = &tx_ring->buffer_info[i]; |
|
2825 size = min(len, max_per_txd); |
|
2826 /* Workaround for premature desc write-backs |
|
2827 * in TSO mode. Append 4-byte sentinel desc */ |
|
2828 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
2829 size -= 4; |
|
2830 /* Workaround for potential 82544 hang in PCI-X. |
|
2831 * Avoid terminating buffers within evenly-aligned |
|
2832 * dwords. */ |
|
2833 if (unlikely(adapter->pcix_82544 && |
|
2834 !((unsigned long)(page_to_phys(frag->page) + offset |
|
2835 + size - 1) & 4) && |
|
2836 size > 4)) |
|
2837 size -= 4; |
|
2838 |
|
2839 buffer_info->length = size; |
|
2840 buffer_info->time_stamp = jiffies; |
|
2841 buffer_info->mapped_as_page = true; |
|
2842 buffer_info->dma = pci_map_page(pdev, frag->page, |
|
2843 offset, size, |
|
2844 PCI_DMA_TODEVICE); |
|
2845 if (pci_dma_mapping_error(pdev, buffer_info->dma)) |
|
2846 goto dma_error; |
|
2847 buffer_info->next_to_watch = i; |
|
2848 |
|
2849 len -= size; |
|
2850 offset += size; |
|
2851 count++; |
|
2852 } |
|
2853 } |
|
2854 |
|
2855 tx_ring->buffer_info[i].skb = skb; |
|
2856 tx_ring->buffer_info[first].next_to_watch = i; |
|
2857 |
|
2858 return count; |
|
2859 |
|
2860 dma_error: |
|
2861 dev_err(&pdev->dev, "TX DMA map failed\n"); |
|
2862 buffer_info->dma = 0; |
|
2863 if (count) |
|
2864 count--; |
|
2865 |
|
2866 while (count--) { |
|
2867 if (i==0) |
|
2868 i += tx_ring->count; |
|
2869 i--; |
|
2870 buffer_info = &tx_ring->buffer_info[i]; |
|
2871 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
2872 } |
|
2873 |
|
2874 return 0; |
|
2875 } |
|
2876 |
|
2877 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
2878 struct e1000_tx_ring *tx_ring, int tx_flags, |
|
2879 int count) |
|
2880 { |
|
2881 struct e1000_hw *hw = &adapter->hw; |
|
2882 struct e1000_tx_desc *tx_desc = NULL; |
|
2883 struct e1000_buffer *buffer_info; |
|
2884 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
2885 unsigned int i; |
|
2886 |
|
2887 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
2888 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
2889 E1000_TXD_CMD_TSE; |
|
2890 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2891 |
|
2892 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
2893 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
2894 } |
|
2895 |
|
2896 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
2897 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
2898 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2899 } |
|
2900 |
|
2901 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
2902 txd_lower |= E1000_TXD_CMD_VLE; |
|
2903 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
2904 } |
|
2905 |
|
2906 i = tx_ring->next_to_use; |
|
2907 |
|
2908 while (count--) { |
|
2909 buffer_info = &tx_ring->buffer_info[i]; |
|
2910 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
2911 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
2912 tx_desc->lower.data = |
|
2913 cpu_to_le32(txd_lower | buffer_info->length); |
|
2914 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
2915 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2916 } |
|
2917 |
|
2918 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
2919 |
|
2920 /* Force memory writes to complete before letting h/w |
|
2921 * know there are new descriptors to fetch. (Only |
|
2922 * applicable for weak-ordered memory model archs, |
|
2923 * such as IA-64). */ |
|
2924 wmb(); |
|
2925 |
|
2926 tx_ring->next_to_use = i; |
|
2927 writel(i, hw->hw_addr + tx_ring->tdt); |
|
2928 /* we need this if more than one processor can write to our tail |
|
2929 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
2930 mmiowb(); |
|
2931 } |
|
2932 |
|
2933 /** |
|
2934 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
2935 * The workaround is to avoid queuing a large packet that would span |
|
2936 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
2937 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
2938 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
2939 * to the beginning of the Tx FIFO. |
|
2940 **/ |
|
2941 |
|
2942 #define E1000_FIFO_HDR 0x10 |
|
2943 #define E1000_82547_PAD_LEN 0x3E0 |
|
2944 |
|
2945 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
|
2946 struct sk_buff *skb) |
|
2947 { |
|
2948 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
2949 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
2950 |
|
2951 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
2952 |
|
2953 if (adapter->link_duplex != HALF_DUPLEX) |
|
2954 goto no_fifo_stall_required; |
|
2955 |
|
2956 if (atomic_read(&adapter->tx_fifo_stall)) |
|
2957 return 1; |
|
2958 |
|
2959 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
2960 atomic_set(&adapter->tx_fifo_stall, 1); |
|
2961 return 1; |
|
2962 } |
|
2963 |
|
2964 no_fifo_stall_required: |
|
2965 adapter->tx_fifo_head += skb_fifo_len; |
|
2966 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
2967 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
2968 return 0; |
|
2969 } |
|
2970 |
|
2971 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
2972 { |
|
2973 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2974 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
2975 |
|
2976 netif_stop_queue(netdev); |
|
2977 /* Herbert's original patch had: |
|
2978 * smp_mb__after_netif_stop_queue(); |
|
2979 * but since that doesn't exist yet, just open code it. */ |
|
2980 smp_mb(); |
|
2981 |
|
2982 /* We need to check again in a case another CPU has just |
|
2983 * made room available. */ |
|
2984 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
2985 return -EBUSY; |
|
2986 |
|
2987 /* A reprieve! */ |
|
2988 netif_start_queue(netdev); |
|
2989 ++adapter->restart_queue; |
|
2990 return 0; |
|
2991 } |
|
2992 |
|
2993 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
2994 struct e1000_tx_ring *tx_ring, int size) |
|
2995 { |
|
2996 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
2997 return 0; |
|
2998 return __e1000_maybe_stop_tx(netdev, size); |
|
2999 } |
|
3000 |
|
3001 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
3002 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
3003 struct net_device *netdev) |
|
3004 { |
|
3005 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3006 struct e1000_hw *hw = &adapter->hw; |
|
3007 struct e1000_tx_ring *tx_ring; |
|
3008 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
3009 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
3010 unsigned int tx_flags = 0; |
|
3011 unsigned int len = skb->len - skb->data_len; |
|
3012 unsigned int nr_frags = 0; |
|
3013 unsigned int mss = 0; |
|
3014 int count = 0; |
|
3015 int tso; |
|
3016 unsigned int f; |
|
3017 |
|
3018 /* This goes back to the question of how to logically map a tx queue |
|
3019 * to a flow. Right now, performance is impacted slightly negatively |
|
3020 * if using multiple tx queues. If the stack breaks away from a |
|
3021 * single qdisc implementation, we can look at this again. */ |
|
3022 tx_ring = adapter->tx_ring; |
|
3023 |
|
3024 if (unlikely(skb->len <= 0)) { |
|
3025 if (!adapter->ecdev) |
|
3026 dev_kfree_skb_any(skb); |
|
3027 return NETDEV_TX_OK; |
|
3028 } |
|
3029 |
|
3030 mss = skb_shinfo(skb)->gso_size; |
|
3031 /* The controller does a simple calculation to |
|
3032 * make sure there is enough room in the FIFO before |
|
3033 * initiating the DMA for each buffer. The calc is: |
|
3034 * 4 = ceil(buffer len/mss). To make sure we don't |
|
3035 * overrun the FIFO, adjust the max buffer len if mss |
|
3036 * drops. */ |
|
3037 if (mss) { |
|
3038 u8 hdr_len; |
|
3039 max_per_txd = min(mss << 2, max_per_txd); |
|
3040 max_txd_pwr = fls(max_per_txd) - 1; |
|
3041 |
|
3042 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
3043 if (skb->data_len && hdr_len == len) { |
|
3044 switch (hw->mac_type) { |
|
3045 unsigned int pull_size; |
|
3046 case e1000_82544: |
|
3047 /* Make sure we have room to chop off 4 bytes, |
|
3048 * and that the end alignment will work out to |
|
3049 * this hardware's requirements |
|
3050 * NOTE: this is a TSO only workaround |
|
3051 * if end byte alignment not correct move us |
|
3052 * into the next dword */ |
|
3053 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
3054 break; |
|
3055 /* fall through */ |
|
3056 pull_size = min((unsigned int)4, skb->data_len); |
|
3057 if (!__pskb_pull_tail(skb, pull_size)) { |
|
3058 DPRINTK(DRV, ERR, |
|
3059 "__pskb_pull_tail failed.\n"); |
|
3060 dev_kfree_skb_any(skb); |
|
3061 return NETDEV_TX_OK; |
|
3062 } |
|
3063 len = skb->len - skb->data_len; |
|
3064 break; |
|
3065 default: |
|
3066 /* do nothing */ |
|
3067 break; |
|
3068 } |
|
3069 } |
|
3070 } |
|
3071 |
|
3072 /* reserve a descriptor for the offload context */ |
|
3073 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
3074 count++; |
|
3075 count++; |
|
3076 |
|
3077 /* Controller Erratum workaround */ |
|
3078 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
3079 count++; |
|
3080 |
|
3081 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
3082 |
|
3083 if (adapter->pcix_82544) |
|
3084 count++; |
|
3085 |
|
3086 /* work-around for errata 10 and it applies to all controllers |
|
3087 * in PCI-X mode, so add one more descriptor to the count |
|
3088 */ |
|
3089 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
3090 (len > 2015))) |
|
3091 count++; |
|
3092 |
|
3093 nr_frags = skb_shinfo(skb)->nr_frags; |
|
3094 for (f = 0; f < nr_frags; f++) |
|
3095 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3096 max_txd_pwr); |
|
3097 if (adapter->pcix_82544) |
|
3098 count += nr_frags; |
|
3099 |
|
3100 /* need: count + 2 desc gap to keep tail from touching |
|
3101 * head, otherwise try next time */ |
|
3102 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
|
3103 return NETDEV_TX_BUSY; |
|
3104 |
|
3105 if (unlikely(hw->mac_type == e1000_82547)) { |
|
3106 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3107 if (!adapter->ecdev) { |
|
3108 netif_stop_queue(netdev); |
|
3109 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3110 mod_timer(&adapter->tx_fifo_stall_timer, |
|
3111 jiffies + 1); |
|
3112 } |
|
3113 return NETDEV_TX_BUSY; |
|
3114 } |
|
3115 } |
|
3116 |
|
3117 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
|
3118 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3119 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3120 } |
|
3121 |
|
3122 first = tx_ring->next_to_use; |
|
3123 |
|
3124 tso = e1000_tso(adapter, tx_ring, skb); |
|
3125 if (tso < 0) { |
|
3126 if (!adapter->ecdev) { |
|
3127 dev_kfree_skb_any(skb); |
|
3128 } |
|
3129 return NETDEV_TX_OK; |
|
3130 } |
|
3131 |
|
3132 if (likely(tso)) { |
|
3133 if (likely(hw->mac_type != e1000_82544)) |
|
3134 tx_ring->last_tx_tso = 1; |
|
3135 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3136 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3137 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3138 |
|
3139 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3140 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3141 |
|
3142 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
|
3143 nr_frags, mss); |
|
3144 |
|
3145 if (count) { |
|
3146 e1000_tx_queue(adapter, tx_ring, tx_flags, count); |
|
3147 if (!adapter->ecdev) { |
|
3148 /* Make sure there is space in the ring for the next send. */ |
|
3149 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3150 } |
|
3151 |
|
3152 } else { |
|
3153 if (!adapter->ecdev) dev_kfree_skb_any(skb); |
|
3154 tx_ring->buffer_info[first].time_stamp = 0; |
|
3155 tx_ring->next_to_use = first; |
|
3156 } |
|
3157 |
|
3158 return NETDEV_TX_OK; |
|
3159 } |
|
3160 |
|
3161 /** |
|
3162 * e1000_tx_timeout - Respond to a Tx Hang |
|
3163 * @netdev: network interface device structure |
|
3164 **/ |
|
3165 |
|
3166 static void e1000_tx_timeout(struct net_device *netdev) |
|
3167 { |
|
3168 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3169 |
|
3170 /* Do the reset outside of interrupt context */ |
|
3171 adapter->tx_timeout_count++; |
|
3172 schedule_work(&adapter->reset_task); |
|
3173 } |
|
3174 |
|
3175 static void e1000_reset_task(struct work_struct *work) |
|
3176 { |
|
3177 struct e1000_adapter *adapter = |
|
3178 container_of(work, struct e1000_adapter, reset_task); |
|
3179 |
|
3180 e1000_reinit_locked(adapter); |
|
3181 } |
|
3182 |
|
3183 /** |
|
3184 * e1000_get_stats - Get System Network Statistics |
|
3185 * @netdev: network interface device structure |
|
3186 * |
|
3187 * Returns the address of the device statistics structure. |
|
3188 * The statistics are actually updated from the timer callback. |
|
3189 **/ |
|
3190 |
|
3191 static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
|
3192 { |
|
3193 /* only return the current stats */ |
|
3194 return &netdev->stats; |
|
3195 } |
|
3196 |
|
3197 /** |
|
3198 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3199 * @netdev: network interface device structure |
|
3200 * @new_mtu: new value for maximum frame size |
|
3201 * |
|
3202 * Returns 0 on success, negative on failure |
|
3203 **/ |
|
3204 |
|
3205 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3206 { |
|
3207 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3208 struct e1000_hw *hw = &adapter->hw; |
|
3209 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3210 |
|
3211 if (adapter->ecdev) |
|
3212 return -EBUSY; |
|
3213 |
|
3214 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3215 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3216 DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); |
|
3217 return -EINVAL; |
|
3218 } |
|
3219 |
|
3220 /* Adapter-specific max frame size limits. */ |
|
3221 switch (hw->mac_type) { |
|
3222 case e1000_undefined ... e1000_82542_rev2_1: |
|
3223 if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
|
3224 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); |
|
3225 return -EINVAL; |
|
3226 } |
|
3227 break; |
|
3228 default: |
|
3229 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3230 break; |
|
3231 } |
|
3232 |
|
3233 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
3234 msleep(1); |
|
3235 /* e1000_down has a dependency on max_frame_size */ |
|
3236 hw->max_frame_size = max_frame; |
|
3237 if (netif_running(netdev)) |
|
3238 e1000_down(adapter); |
|
3239 |
|
3240 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3241 * means we reserve 2 more, this pushes us to allocate from the next |
|
3242 * larger slab size. |
|
3243 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
3244 * however with the new *_jumbo_rx* routines, jumbo receives will use |
|
3245 * fragmented skbs */ |
|
3246 |
|
3247 if (max_frame <= E1000_RXBUFFER_2048) |
|
3248 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3249 else |
|
3250 #if (PAGE_SIZE >= E1000_RXBUFFER_16384) |
|
3251 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3252 #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
|
3253 adapter->rx_buffer_len = PAGE_SIZE; |
|
3254 #endif |
|
3255 |
|
3256 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3257 if (!hw->tbi_compatibility_on && |
|
3258 ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
|
3259 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3260 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3261 |
|
3262 printk(KERN_INFO "e1000: %s changing MTU from %d to %d\n", |
|
3263 netdev->name, netdev->mtu, new_mtu); |
|
3264 netdev->mtu = new_mtu; |
|
3265 |
|
3266 if (netif_running(netdev)) |
|
3267 e1000_up(adapter); |
|
3268 else |
|
3269 e1000_reset(adapter); |
|
3270 |
|
3271 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
3272 |
|
3273 return 0; |
|
3274 } |
|
3275 |
|
3276 /** |
|
3277 * e1000_update_stats - Update the board statistics counters |
|
3278 * @adapter: board private structure |
|
3279 **/ |
|
3280 |
|
3281 void e1000_update_stats(struct e1000_adapter *adapter) |
|
3282 { |
|
3283 struct net_device *netdev = adapter->netdev; |
|
3284 struct e1000_hw *hw = &adapter->hw; |
|
3285 struct pci_dev *pdev = adapter->pdev; |
|
3286 unsigned long flags = 0; |
|
3287 u16 phy_tmp; |
|
3288 |
|
3289 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3290 |
|
3291 /* |
|
3292 * Prevent stats update while adapter is being reset, or if the pci |
|
3293 * connection is down. |
|
3294 */ |
|
3295 if (adapter->link_speed == 0) |
|
3296 return; |
|
3297 if (pci_channel_offline(pdev)) |
|
3298 return; |
|
3299 |
|
3300 if (!adapter->ecdev) |
|
3301 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3302 |
|
3303 /* these counters are modified from e1000_tbi_adjust_stats, |
|
3304 * called from the interrupt context, so they must only |
|
3305 * be written while holding adapter->stats_lock |
|
3306 */ |
|
3307 |
|
3308 adapter->stats.crcerrs += er32(CRCERRS); |
|
3309 adapter->stats.gprc += er32(GPRC); |
|
3310 adapter->stats.gorcl += er32(GORCL); |
|
3311 adapter->stats.gorch += er32(GORCH); |
|
3312 adapter->stats.bprc += er32(BPRC); |
|
3313 adapter->stats.mprc += er32(MPRC); |
|
3314 adapter->stats.roc += er32(ROC); |
|
3315 |
|
3316 adapter->stats.prc64 += er32(PRC64); |
|
3317 adapter->stats.prc127 += er32(PRC127); |
|
3318 adapter->stats.prc255 += er32(PRC255); |
|
3319 adapter->stats.prc511 += er32(PRC511); |
|
3320 adapter->stats.prc1023 += er32(PRC1023); |
|
3321 adapter->stats.prc1522 += er32(PRC1522); |
|
3322 |
|
3323 adapter->stats.symerrs += er32(SYMERRS); |
|
3324 adapter->stats.mpc += er32(MPC); |
|
3325 adapter->stats.scc += er32(SCC); |
|
3326 adapter->stats.ecol += er32(ECOL); |
|
3327 adapter->stats.mcc += er32(MCC); |
|
3328 adapter->stats.latecol += er32(LATECOL); |
|
3329 adapter->stats.dc += er32(DC); |
|
3330 adapter->stats.sec += er32(SEC); |
|
3331 adapter->stats.rlec += er32(RLEC); |
|
3332 adapter->stats.xonrxc += er32(XONRXC); |
|
3333 adapter->stats.xontxc += er32(XONTXC); |
|
3334 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
3335 adapter->stats.xofftxc += er32(XOFFTXC); |
|
3336 adapter->stats.fcruc += er32(FCRUC); |
|
3337 adapter->stats.gptc += er32(GPTC); |
|
3338 adapter->stats.gotcl += er32(GOTCL); |
|
3339 adapter->stats.gotch += er32(GOTCH); |
|
3340 adapter->stats.rnbc += er32(RNBC); |
|
3341 adapter->stats.ruc += er32(RUC); |
|
3342 adapter->stats.rfc += er32(RFC); |
|
3343 adapter->stats.rjc += er32(RJC); |
|
3344 adapter->stats.torl += er32(TORL); |
|
3345 adapter->stats.torh += er32(TORH); |
|
3346 adapter->stats.totl += er32(TOTL); |
|
3347 adapter->stats.toth += er32(TOTH); |
|
3348 adapter->stats.tpr += er32(TPR); |
|
3349 |
|
3350 adapter->stats.ptc64 += er32(PTC64); |
|
3351 adapter->stats.ptc127 += er32(PTC127); |
|
3352 adapter->stats.ptc255 += er32(PTC255); |
|
3353 adapter->stats.ptc511 += er32(PTC511); |
|
3354 adapter->stats.ptc1023 += er32(PTC1023); |
|
3355 adapter->stats.ptc1522 += er32(PTC1522); |
|
3356 |
|
3357 adapter->stats.mptc += er32(MPTC); |
|
3358 adapter->stats.bptc += er32(BPTC); |
|
3359 |
|
3360 /* used for adaptive IFS */ |
|
3361 |
|
3362 hw->tx_packet_delta = er32(TPT); |
|
3363 adapter->stats.tpt += hw->tx_packet_delta; |
|
3364 hw->collision_delta = er32(COLC); |
|
3365 adapter->stats.colc += hw->collision_delta; |
|
3366 |
|
3367 if (hw->mac_type >= e1000_82543) { |
|
3368 adapter->stats.algnerrc += er32(ALGNERRC); |
|
3369 adapter->stats.rxerrc += er32(RXERRC); |
|
3370 adapter->stats.tncrs += er32(TNCRS); |
|
3371 adapter->stats.cexterr += er32(CEXTERR); |
|
3372 adapter->stats.tsctc += er32(TSCTC); |
|
3373 adapter->stats.tsctfc += er32(TSCTFC); |
|
3374 } |
|
3375 |
|
3376 /* Fill out the OS statistics structure */ |
|
3377 netdev->stats.multicast = adapter->stats.mprc; |
|
3378 netdev->stats.collisions = adapter->stats.colc; |
|
3379 |
|
3380 /* Rx Errors */ |
|
3381 |
|
3382 /* RLEC on some newer hardware can be incorrect so build |
|
3383 * our own version based on RUC and ROC */ |
|
3384 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
3385 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3386 adapter->stats.ruc + adapter->stats.roc + |
|
3387 adapter->stats.cexterr; |
|
3388 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3389 netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
|
3390 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3391 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3392 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
3393 |
|
3394 /* Tx Errors */ |
|
3395 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3396 netdev->stats.tx_errors = adapter->stats.txerrc; |
|
3397 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
3398 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
3399 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3400 if (hw->bad_tx_carr_stats_fd && |
|
3401 adapter->link_duplex == FULL_DUPLEX) { |
|
3402 netdev->stats.tx_carrier_errors = 0; |
|
3403 adapter->stats.tncrs = 0; |
|
3404 } |
|
3405 |
|
3406 /* Tx Dropped needs to be maintained elsewhere */ |
|
3407 |
|
3408 /* Phy Stats */ |
|
3409 if (hw->media_type == e1000_media_type_copper) { |
|
3410 if ((adapter->link_speed == SPEED_1000) && |
|
3411 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3412 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3413 adapter->phy_stats.idle_errors += phy_tmp; |
|
3414 } |
|
3415 |
|
3416 if ((hw->mac_type <= e1000_82546) && |
|
3417 (hw->phy_type == e1000_phy_m88) && |
|
3418 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3419 adapter->phy_stats.receive_errors += phy_tmp; |
|
3420 } |
|
3421 |
|
3422 /* Management Stats */ |
|
3423 if (hw->has_smbus) { |
|
3424 adapter->stats.mgptc += er32(MGTPTC); |
|
3425 adapter->stats.mgprc += er32(MGTPRC); |
|
3426 adapter->stats.mgpdc += er32(MGTPDC); |
|
3427 } |
|
3428 |
|
3429 if (!adapter->ecdev) |
|
3430 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3431 } |
|
3432 |
|
3433 void ec_poll(struct net_device *netdev) |
|
3434 { |
|
3435 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3436 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
3437 e1000_watchdog((unsigned long) adapter); |
|
3438 adapter->ec_watchdog_jiffies = jiffies; |
|
3439 } |
|
3440 |
|
3441 e1000_intr(0, netdev); |
|
3442 } |
|
3443 |
|
3444 /** |
|
3445 * e1000_intr - Interrupt Handler |
|
3446 * @irq: interrupt number |
|
3447 * @data: pointer to a network interface device structure |
|
3448 **/ |
|
3449 |
|
3450 static irqreturn_t e1000_intr(int irq, void *data) |
|
3451 { |
|
3452 struct net_device *netdev = data; |
|
3453 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3454 struct e1000_hw *hw = &adapter->hw; |
|
3455 u32 icr = er32(ICR); |
|
3456 |
|
3457 if (unlikely((!icr) || test_bit(__E1000_DOWN, &adapter->flags))) |
|
3458 return IRQ_NONE; /* Not our interrupt */ |
|
3459 |
|
3460 if (!adapter->ecdev && unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3461 hw->get_link_status = 1; |
|
3462 /* guard against interrupt when we're going down */ |
|
3463 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3464 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3465 } |
|
3466 |
|
3467 if (adapter->ecdev) { |
|
3468 int i, ec_work_done = 0; |
|
3469 for (i = 0; i < E1000_MAX_INTR; i++) { |
|
3470 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring, |
|
3471 &ec_work_done, 100) & |
|
3472 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) { |
|
3473 break; |
|
3474 } |
|
3475 } |
|
3476 } else { |
|
3477 /* disable interrupts, without the synchronize_irq bit */ |
|
3478 ew32(IMC, ~0); |
|
3479 E1000_WRITE_FLUSH(); |
|
3480 |
|
3481 if (likely(napi_schedule_prep(&adapter->napi))) { |
|
3482 adapter->total_tx_bytes = 0; |
|
3483 adapter->total_tx_packets = 0; |
|
3484 adapter->total_rx_bytes = 0; |
|
3485 adapter->total_rx_packets = 0; |
|
3486 __napi_schedule(&adapter->napi); |
|
3487 } else { |
|
3488 /* this really should not happen! if it does it is basically a |
|
3489 * bug, but not a hard error, so enable ints and continue */ |
|
3490 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3491 e1000_irq_enable(adapter); |
|
3492 } |
|
3493 } |
|
3494 |
|
3495 return IRQ_HANDLED; |
|
3496 } |
|
3497 |
|
3498 /** |
|
3499 * e1000_clean - NAPI Rx polling callback |
|
3500 * @adapter: board private structure |
|
3501 * EtherCAT: never called |
|
3502 **/ |
|
3503 static int e1000_clean(struct napi_struct *napi, int budget) |
|
3504 { |
|
3505 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
3506 int tx_clean_complete = 0, work_done = 0; |
|
3507 |
|
3508 tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
|
3509 |
|
3510 adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
|
3511 |
|
3512 if (!tx_clean_complete) |
|
3513 work_done = budget; |
|
3514 |
|
3515 /* If budget not fully consumed, exit the polling mode */ |
|
3516 if (work_done < budget) { |
|
3517 if (likely(adapter->itr_setting & 3)) |
|
3518 e1000_set_itr(adapter); |
|
3519 napi_complete(napi); |
|
3520 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3521 e1000_irq_enable(adapter); |
|
3522 } |
|
3523 |
|
3524 return work_done; |
|
3525 } |
|
3526 |
|
3527 /** |
|
3528 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
3529 * @adapter: board private structure |
|
3530 **/ |
|
3531 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
3532 struct e1000_tx_ring *tx_ring) |
|
3533 { |
|
3534 struct e1000_hw *hw = &adapter->hw; |
|
3535 struct net_device *netdev = adapter->netdev; |
|
3536 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
3537 struct e1000_buffer *buffer_info; |
|
3538 unsigned int i, eop; |
|
3539 unsigned int count = 0; |
|
3540 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
3541 |
|
3542 i = tx_ring->next_to_clean; |
|
3543 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3544 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3545 |
|
3546 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
3547 (count < tx_ring->count)) { |
|
3548 bool cleaned = false; |
|
3549 for ( ; !cleaned; count++) { |
|
3550 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3551 buffer_info = &tx_ring->buffer_info[i]; |
|
3552 cleaned = (i == eop); |
|
3553 |
|
3554 if (cleaned) { |
|
3555 struct sk_buff *skb = buffer_info->skb; |
|
3556 unsigned int segs, bytecount; |
|
3557 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
3558 /* multiply data chunks by size of headers */ |
|
3559 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
3560 skb->len; |
|
3561 total_tx_packets += segs; |
|
3562 total_tx_bytes += bytecount; |
|
3563 } |
|
3564 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
3565 tx_desc->upper.data = 0; |
|
3566 |
|
3567 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3568 } |
|
3569 |
|
3570 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3571 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3572 } |
|
3573 |
|
3574 tx_ring->next_to_clean = i; |
|
3575 |
|
3576 #define TX_WAKE_THRESHOLD 32 |
|
3577 if (!adapter->ecdev && unlikely(count && netif_carrier_ok(netdev) && |
|
3578 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
3579 /* Make sure that anybody stopping the queue after this |
|
3580 * sees the new next_to_clean. |
|
3581 */ |
|
3582 smp_mb(); |
|
3583 |
|
3584 if (netif_queue_stopped(netdev) && |
|
3585 !(test_bit(__E1000_DOWN, &adapter->flags))) { |
|
3586 netif_wake_queue(netdev); |
|
3587 ++adapter->restart_queue; |
|
3588 } |
|
3589 } |
|
3590 |
|
3591 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
3592 /* Detect a transmit hang in hardware, this serializes the |
|
3593 * check with the clearing of time_stamp and movement of i */ |
|
3594 adapter->detect_tx_hung = false; |
|
3595 if (tx_ring->buffer_info[eop].time_stamp && |
|
3596 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + |
|
3597 (adapter->tx_timeout_factor * HZ)) && |
|
3598 !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
|
3599 |
|
3600 /* detected Tx unit hang */ |
|
3601 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
|
3602 " Tx Queue <%lu>\n" |
|
3603 " TDH <%x>\n" |
|
3604 " TDT <%x>\n" |
|
3605 " next_to_use <%x>\n" |
|
3606 " next_to_clean <%x>\n" |
|
3607 "buffer_info[next_to_clean]\n" |
|
3608 " time_stamp <%lx>\n" |
|
3609 " next_to_watch <%x>\n" |
|
3610 " jiffies <%lx>\n" |
|
3611 " next_to_watch.status <%x>\n", |
|
3612 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
3613 sizeof(struct e1000_tx_ring)), |
|
3614 readl(hw->hw_addr + tx_ring->tdh), |
|
3615 readl(hw->hw_addr + tx_ring->tdt), |
|
3616 tx_ring->next_to_use, |
|
3617 tx_ring->next_to_clean, |
|
3618 tx_ring->buffer_info[eop].time_stamp, |
|
3619 eop, |
|
3620 jiffies, |
|
3621 eop_desc->upper.fields.status); |
|
3622 netif_stop_queue(netdev); |
|
3623 } |
|
3624 } |
|
3625 adapter->total_tx_bytes += total_tx_bytes; |
|
3626 adapter->total_tx_packets += total_tx_packets; |
|
3627 netdev->stats.tx_bytes += total_tx_bytes; |
|
3628 netdev->stats.tx_packets += total_tx_packets; |
|
3629 return (count < tx_ring->count); |
|
3630 } |
|
3631 |
|
3632 /** |
|
3633 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
3634 * @adapter: board private structure |
|
3635 * @status_err: receive descriptor status and error fields |
|
3636 * @csum: receive descriptor csum field |
|
3637 * @sk_buff: socket buffer with received data |
|
3638 **/ |
|
3639 |
|
3640 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
3641 u32 csum, struct sk_buff *skb) |
|
3642 { |
|
3643 struct e1000_hw *hw = &adapter->hw; |
|
3644 u16 status = (u16)status_err; |
|
3645 u8 errors = (u8)(status_err >> 24); |
|
3646 skb->ip_summed = CHECKSUM_NONE; |
|
3647 |
|
3648 /* 82543 or newer only */ |
|
3649 if (unlikely(hw->mac_type < e1000_82543)) return; |
|
3650 /* Ignore Checksum bit is set */ |
|
3651 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
3652 /* TCP/UDP checksum error bit is set */ |
|
3653 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
3654 /* let the stack verify checksum errors */ |
|
3655 adapter->hw_csum_err++; |
|
3656 return; |
|
3657 } |
|
3658 /* TCP/UDP Checksum has not been calculated */ |
|
3659 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
3660 return; |
|
3661 |
|
3662 /* It must be a TCP or UDP packet with a valid checksum */ |
|
3663 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
3664 /* TCP checksum is good */ |
|
3665 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
3666 } |
|
3667 adapter->hw_csum_good++; |
|
3668 } |
|
3669 |
|
3670 /** |
|
3671 * e1000_consume_page - helper function |
|
3672 **/ |
|
3673 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
3674 u16 length) |
|
3675 { |
|
3676 bi->page = NULL; |
|
3677 skb->len += length; |
|
3678 skb->data_len += length; |
|
3679 skb->truesize += length; |
|
3680 } |
|
3681 |
|
3682 /** |
|
3683 * e1000_receive_skb - helper function to handle rx indications |
|
3684 * @adapter: board private structure |
|
3685 * @status: descriptor status field as written by hardware |
|
3686 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
3687 * @skb: pointer to sk_buff to be indicated to stack |
|
3688 */ |
|
3689 static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, |
|
3690 __le16 vlan, struct sk_buff *skb) |
|
3691 { |
|
3692 if (unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP))) { |
|
3693 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
|
3694 le16_to_cpu(vlan) & |
|
3695 E1000_RXD_SPC_VLAN_MASK); |
|
3696 } else { |
|
3697 netif_receive_skb(skb); |
|
3698 } |
|
3699 } |
|
3700 |
|
3701 /** |
|
3702 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
3703 * @adapter: board private structure |
|
3704 * @rx_ring: ring to clean |
|
3705 * @work_done: amount of napi work completed this call |
|
3706 * @work_to_do: max amount of work allowed for this call to do |
|
3707 * |
|
3708 * the return value indicates whether actual cleaning was done, there |
|
3709 * is no guarantee that everything was cleaned |
|
3710 */ |
|
3711 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
|
3712 struct e1000_rx_ring *rx_ring, |
|
3713 int *work_done, int work_to_do) |
|
3714 { |
|
3715 struct e1000_hw *hw = &adapter->hw; |
|
3716 struct net_device *netdev = adapter->netdev; |
|
3717 struct pci_dev *pdev = adapter->pdev; |
|
3718 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3719 struct e1000_buffer *buffer_info, *next_buffer; |
|
3720 unsigned long irq_flags; |
|
3721 u32 length; |
|
3722 unsigned int i; |
|
3723 int cleaned_count = 0; |
|
3724 bool cleaned = false; |
|
3725 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3726 |
|
3727 i = rx_ring->next_to_clean; |
|
3728 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3729 buffer_info = &rx_ring->buffer_info[i]; |
|
3730 |
|
3731 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3732 struct sk_buff *skb; |
|
3733 u8 status; |
|
3734 |
|
3735 if (*work_done >= work_to_do) |
|
3736 break; |
|
3737 (*work_done)++; |
|
3738 |
|
3739 status = rx_desc->status; |
|
3740 skb = buffer_info->skb; |
|
3741 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
3742 |
|
3743 if (++i == rx_ring->count) i = 0; |
|
3744 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3745 prefetch(next_rxd); |
|
3746 |
|
3747 next_buffer = &rx_ring->buffer_info[i]; |
|
3748 |
|
3749 cleaned = true; |
|
3750 cleaned_count++; |
|
3751 pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, |
|
3752 PCI_DMA_FROMDEVICE); |
|
3753 buffer_info->dma = 0; |
|
3754 |
|
3755 length = le16_to_cpu(rx_desc->length); |
|
3756 |
|
3757 /* errors is only valid for DD + EOP descriptors */ |
|
3758 if (!adapter->ecdev && |
|
3759 unlikely((status & E1000_RXD_STAT_EOP) && |
|
3760 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { |
|
3761 u8 last_byte = *(skb->data + length - 1); |
|
3762 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
3763 last_byte)) { |
|
3764 spin_lock_irqsave(&adapter->stats_lock, |
|
3765 irq_flags); |
|
3766 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
3767 length, skb->data); |
|
3768 spin_unlock_irqrestore(&adapter->stats_lock, |
|
3769 irq_flags); |
|
3770 length--; |
|
3771 } else { |
|
3772 /* recycle both page and skb */ |
|
3773 buffer_info->skb = skb; |
|
3774 /* an error means any chain goes out the window |
|
3775 * too */ |
|
3776 if (rx_ring->rx_skb_top) |
|
3777 dev_kfree_skb(rx_ring->rx_skb_top); |
|
3778 rx_ring->rx_skb_top = NULL; |
|
3779 goto next_desc; |
|
3780 } |
|
3781 } |
|
3782 |
|
3783 #define rxtop rx_ring->rx_skb_top |
|
3784 if (!(status & E1000_RXD_STAT_EOP)) { |
|
3785 /* this descriptor is only the beginning (or middle) */ |
|
3786 if (!rxtop) { |
|
3787 /* this is the beginning of a chain */ |
|
3788 rxtop = skb; |
|
3789 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
3790 0, length); |
|
3791 } else { |
|
3792 /* this is the middle of a chain */ |
|
3793 skb_fill_page_desc(rxtop, |
|
3794 skb_shinfo(rxtop)->nr_frags, |
|
3795 buffer_info->page, 0, length); |
|
3796 /* re-use the skb, only consumed the page */ |
|
3797 buffer_info->skb = skb; |
|
3798 } |
|
3799 e1000_consume_page(buffer_info, rxtop, length); |
|
3800 goto next_desc; |
|
3801 } else { |
|
3802 if (rxtop) { |
|
3803 /* end of the chain */ |
|
3804 skb_fill_page_desc(rxtop, |
|
3805 skb_shinfo(rxtop)->nr_frags, |
|
3806 buffer_info->page, 0, length); |
|
3807 /* re-use the current skb, we only consumed the |
|
3808 * page */ |
|
3809 buffer_info->skb = skb; |
|
3810 skb = rxtop; |
|
3811 rxtop = NULL; |
|
3812 e1000_consume_page(buffer_info, skb, length); |
|
3813 } else { |
|
3814 /* no chain, got EOP, this buf is the packet |
|
3815 * copybreak to save the put_page/alloc_page */ |
|
3816 if (length <= copybreak && |
|
3817 skb_tailroom(skb) >= length) { |
|
3818 u8 *vaddr; |
|
3819 vaddr = kmap_atomic(buffer_info->page, |
|
3820 KM_SKB_DATA_SOFTIRQ); |
|
3821 memcpy(skb_tail_pointer(skb), vaddr, length); |
|
3822 kunmap_atomic(vaddr, |
|
3823 KM_SKB_DATA_SOFTIRQ); |
|
3824 /* re-use the page, so don't erase |
|
3825 * buffer_info->page */ |
|
3826 skb_put(skb, length); |
|
3827 } else { |
|
3828 skb_fill_page_desc(skb, 0, |
|
3829 buffer_info->page, 0, |
|
3830 length); |
|
3831 e1000_consume_page(buffer_info, skb, |
|
3832 length); |
|
3833 } |
|
3834 } |
|
3835 } |
|
3836 |
|
3837 /* Receive Checksum Offload XXX recompute due to CRC strip? */ |
|
3838 e1000_rx_checksum(adapter, |
|
3839 (u32)(status) | |
|
3840 ((u32)(rx_desc->errors) << 24), |
|
3841 le16_to_cpu(rx_desc->csum), skb); |
|
3842 |
|
3843 pskb_trim(skb, skb->len - 4); |
|
3844 |
|
3845 /* probably a little skewed due to removing CRC */ |
|
3846 total_rx_bytes += skb->len; |
|
3847 total_rx_packets++; |
|
3848 |
|
3849 /* eth type trans needs skb->data to point to something */ |
|
3850 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
3851 DPRINTK(DRV, ERR, "pskb_may_pull failed.\n"); |
|
3852 if (!adapter->ecdev) dev_kfree_skb(skb); |
|
3853 goto next_desc; |
|
3854 } |
|
3855 |
|
3856 if (adapter->ecdev) { |
|
3857 ecdev_receive(adapter->ecdev, skb->data, length); |
|
3858 |
|
3859 // No need to detect link status as |
|
3860 // long as frames are received: Reset watchdog. |
|
3861 adapter->ec_watchdog_jiffies = jiffies; |
|
3862 } else { |
|
3863 skb->protocol = eth_type_trans(skb, netdev); |
|
3864 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
3865 } |
|
3866 next_desc: |
|
3867 rx_desc->status = 0; |
|
3868 |
|
3869 /* return some buffers to hardware, one at a time is too slow */ |
|
3870 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
3871 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3872 cleaned_count = 0; |
|
3873 } |
|
3874 |
|
3875 /* use prefetched values */ |
|
3876 rx_desc = next_rxd; |
|
3877 buffer_info = next_buffer; |
|
3878 } |
|
3879 rx_ring->next_to_clean = i; |
|
3880 |
|
3881 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
3882 if (cleaned_count) |
|
3883 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3884 |
|
3885 adapter->total_rx_packets += total_rx_packets; |
|
3886 adapter->total_rx_bytes += total_rx_bytes; |
|
3887 netdev->stats.rx_bytes += total_rx_bytes; |
|
3888 netdev->stats.rx_packets += total_rx_packets; |
|
3889 return cleaned; |
|
3890 } |
|
3891 |
|
3892 /** |
|
3893 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
3894 * @adapter: board private structure |
|
3895 * @rx_ring: ring to clean |
|
3896 * @work_done: amount of napi work completed this call |
|
3897 * @work_to_do: max amount of work allowed for this call to do |
|
3898 */ |
|
3899 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
3900 struct e1000_rx_ring *rx_ring, |
|
3901 int *work_done, int work_to_do) |
|
3902 { |
|
3903 struct e1000_hw *hw = &adapter->hw; |
|
3904 struct net_device *netdev = adapter->netdev; |
|
3905 struct pci_dev *pdev = adapter->pdev; |
|
3906 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3907 struct e1000_buffer *buffer_info, *next_buffer; |
|
3908 unsigned long flags; |
|
3909 u32 length; |
|
3910 unsigned int i; |
|
3911 int cleaned_count = 0; |
|
3912 bool cleaned = false; |
|
3913 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3914 |
|
3915 i = rx_ring->next_to_clean; |
|
3916 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3917 buffer_info = &rx_ring->buffer_info[i]; |
|
3918 |
|
3919 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3920 struct sk_buff *skb; |
|
3921 u8 status; |
|
3922 |
|
3923 if (*work_done >= work_to_do) |
|
3924 break; |
|
3925 (*work_done)++; |
|
3926 |
|
3927 status = rx_desc->status; |
|
3928 skb = buffer_info->skb; |
|
3929 if (!adapter->ecdev) buffer_info->skb = NULL; |
|
3930 |
|
3931 prefetch(skb->data - NET_IP_ALIGN); |
|
3932 |
|
3933 if (++i == rx_ring->count) i = 0; |
|
3934 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3935 prefetch(next_rxd); |
|
3936 |
|
3937 next_buffer = &rx_ring->buffer_info[i]; |
|
3938 |
|
3939 cleaned = true; |
|
3940 cleaned_count++; |
|
3941 pci_unmap_single(pdev, buffer_info->dma, buffer_info->length, |
|
3942 PCI_DMA_FROMDEVICE); |
|
3943 buffer_info->dma = 0; |
|
3944 |
|
3945 length = le16_to_cpu(rx_desc->length); |
|
3946 /* !EOP means multiple descriptors were used to store a single |
|
3947 * packet, if thats the case we need to toss it. In fact, we |
|
3948 * to toss every packet with the EOP bit clear and the next |
|
3949 * frame that _does_ have the EOP bit set, as it is by |
|
3950 * definition only a frame fragment |
|
3951 */ |
|
3952 if (unlikely(!(status & E1000_RXD_STAT_EOP))) |
|
3953 adapter->discarding = true; |
|
3954 |
|
3955 if (adapter->discarding) { |
|
3956 /* All receives must fit into a single buffer */ |
|
3957 E1000_DBG("%s: Receive packet consumed multiple" |
|
3958 " buffers\n", netdev->name); |
|
3959 /* recycle */ |
|
3960 buffer_info->skb = skb; |
|
3961 if (status & E1000_RXD_STAT_EOP) |
|
3962 adapter->discarding = false; |
|
3963 goto next_desc; |
|
3964 } |
|
3965 |
|
3966 if (!adapter->ecdev && |
|
3967 unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
3968 u8 last_byte = *(skb->data + length - 1); |
|
3969 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
3970 last_byte)) { |
|
3971 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3972 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
3973 length, skb->data); |
|
3974 spin_unlock_irqrestore(&adapter->stats_lock, |
|
3975 flags); |
|
3976 length--; |
|
3977 } else { |
|
3978 /* recycle */ |
|
3979 buffer_info->skb = skb; |
|
3980 goto next_desc; |
|
3981 } |
|
3982 } |
|
3983 |
|
3984 /* adjust length to remove Ethernet CRC, this must be |
|
3985 * done after the TBI_ACCEPT workaround above */ |
|
3986 length -= 4; |
|
3987 |
|
3988 /* probably a little skewed due to removing CRC */ |
|
3989 total_rx_bytes += length; |
|
3990 total_rx_packets++; |
|
3991 |
|
3992 /* code added for copybreak, this should improve |
|
3993 * performance for small packets with large amounts |
|
3994 * of reassembly being done in the stack */ |
|
3995 if (!adapter->ecdev && length < copybreak) { |
|
3996 struct sk_buff *new_skb = |
|
3997 netdev_alloc_skb_ip_align(netdev, length); |
|
3998 if (new_skb) { |
|
3999 skb_copy_to_linear_data_offset(new_skb, |
|
4000 -NET_IP_ALIGN, |
|
4001 (skb->data - |
|
4002 NET_IP_ALIGN), |
|
4003 (length + |
|
4004 NET_IP_ALIGN)); |
|
4005 /* save the skb in buffer_info as good */ |
|
4006 buffer_info->skb = skb; |
|
4007 skb = new_skb; |
|
4008 } |
|
4009 /* else just continue with the old one */ |
|
4010 } |
|
4011 /* end copybreak code */ |
|
4012 skb_put(skb, length); |
|
4013 |
|
4014 /* Receive Checksum Offload */ |
|
4015 e1000_rx_checksum(adapter, |
|
4016 (u32)(status) | |
|
4017 ((u32)(rx_desc->errors) << 24), |
|
4018 le16_to_cpu(rx_desc->csum), skb); |
|
4019 |
|
4020 if (adapter->ecdev) { |
|
4021 ecdev_receive(adapter->ecdev, skb->data, length); |
|
4022 |
|
4023 // No need to detect link status as |
|
4024 // long as frames are received: Reset watchdog. |
|
4025 adapter->ec_watchdog_jiffies = jiffies; |
|
4026 } else { |
|
4027 skb->protocol = eth_type_trans(skb, netdev); |
|
4028 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
4029 } |
|
4030 |
|
4031 next_desc: |
|
4032 rx_desc->status = 0; |
|
4033 |
|
4034 /* return some buffers to hardware, one at a time is too slow */ |
|
4035 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4036 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4037 cleaned_count = 0; |
|
4038 } |
|
4039 |
|
4040 /* use prefetched values */ |
|
4041 rx_desc = next_rxd; |
|
4042 buffer_info = next_buffer; |
|
4043 } |
|
4044 rx_ring->next_to_clean = i; |
|
4045 |
|
4046 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4047 if (cleaned_count) |
|
4048 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4049 |
|
4050 adapter->total_rx_packets += total_rx_packets; |
|
4051 adapter->total_rx_bytes += total_rx_bytes; |
|
4052 netdev->stats.rx_bytes += total_rx_bytes; |
|
4053 netdev->stats.rx_packets += total_rx_packets; |
|
4054 return cleaned; |
|
4055 } |
|
4056 |
|
4057 /** |
|
4058 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
4059 * @adapter: address of board private structure |
|
4060 * @rx_ring: pointer to receive ring structure |
|
4061 * @cleaned_count: number of buffers to allocate this pass |
|
4062 **/ |
|
4063 |
|
4064 static void |
|
4065 e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
|
4066 struct e1000_rx_ring *rx_ring, int cleaned_count) |
|
4067 { |
|
4068 struct net_device *netdev = adapter->netdev; |
|
4069 struct pci_dev *pdev = adapter->pdev; |
|
4070 struct e1000_rx_desc *rx_desc; |
|
4071 struct e1000_buffer *buffer_info; |
|
4072 struct sk_buff *skb; |
|
4073 unsigned int i; |
|
4074 unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
|
4075 |
|
4076 i = rx_ring->next_to_use; |
|
4077 buffer_info = &rx_ring->buffer_info[i]; |
|
4078 |
|
4079 while (cleaned_count--) { |
|
4080 skb = buffer_info->skb; |
|
4081 if (skb) { |
|
4082 skb_trim(skb, 0); |
|
4083 goto check_page; |
|
4084 } |
|
4085 |
|
4086 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4087 if (unlikely(!skb)) { |
|
4088 /* Better luck next round */ |
|
4089 adapter->alloc_rx_buff_failed++; |
|
4090 break; |
|
4091 } |
|
4092 |
|
4093 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4094 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4095 struct sk_buff *oldskb = skb; |
|
4096 DPRINTK(PROBE, ERR, "skb align check failed: %u bytes " |
|
4097 "at %p\n", bufsz, skb->data); |
|
4098 /* Try again, without freeing the previous */ |
|
4099 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4100 /* Failed allocation, critical failure */ |
|
4101 if (!skb) { |
|
4102 dev_kfree_skb(oldskb); |
|
4103 adapter->alloc_rx_buff_failed++; |
|
4104 break; |
|
4105 } |
|
4106 |
|
4107 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4108 /* give up */ |
|
4109 dev_kfree_skb(skb); |
|
4110 dev_kfree_skb(oldskb); |
|
4111 break; /* while (cleaned_count--) */ |
|
4112 } |
|
4113 |
|
4114 /* Use new allocation */ |
|
4115 dev_kfree_skb(oldskb); |
|
4116 } |
|
4117 buffer_info->skb = skb; |
|
4118 buffer_info->length = adapter->rx_buffer_len; |
|
4119 check_page: |
|
4120 /* allocate a new page if necessary */ |
|
4121 if (!buffer_info->page) { |
|
4122 buffer_info->page = alloc_page(GFP_ATOMIC); |
|
4123 if (unlikely(!buffer_info->page)) { |
|
4124 adapter->alloc_rx_buff_failed++; |
|
4125 break; |
|
4126 } |
|
4127 } |
|
4128 |
|
4129 if (!buffer_info->dma) { |
|
4130 buffer_info->dma = pci_map_page(pdev, |
|
4131 buffer_info->page, 0, |
|
4132 buffer_info->length, |
|
4133 PCI_DMA_FROMDEVICE); |
|
4134 if (pci_dma_mapping_error(pdev, buffer_info->dma)) { |
|
4135 put_page(buffer_info->page); |
|
4136 dev_kfree_skb(skb); |
|
4137 buffer_info->page = NULL; |
|
4138 buffer_info->skb = NULL; |
|
4139 buffer_info->dma = 0; |
|
4140 adapter->alloc_rx_buff_failed++; |
|
4141 break; /* while !buffer_info->skb */ |
|
4142 } |
|
4143 } |
|
4144 |
|
4145 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4146 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4147 |
|
4148 if (unlikely(++i == rx_ring->count)) |
|
4149 i = 0; |
|
4150 buffer_info = &rx_ring->buffer_info[i]; |
|
4151 } |
|
4152 |
|
4153 if (likely(rx_ring->next_to_use != i)) { |
|
4154 rx_ring->next_to_use = i; |
|
4155 if (unlikely(i-- == 0)) |
|
4156 i = (rx_ring->count - 1); |
|
4157 |
|
4158 /* Force memory writes to complete before letting h/w |
|
4159 * know there are new descriptors to fetch. (Only |
|
4160 * applicable for weak-ordered memory model archs, |
|
4161 * such as IA-64). */ |
|
4162 wmb(); |
|
4163 writel(i, adapter->hw.hw_addr + rx_ring->rdt); |
|
4164 } |
|
4165 } |
|
4166 |
|
4167 /** |
|
4168 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4169 * @adapter: address of board private structure |
|
4170 **/ |
|
4171 |
|
4172 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4173 struct e1000_rx_ring *rx_ring, |
|
4174 int cleaned_count) |
|
4175 { |
|
4176 struct e1000_hw *hw = &adapter->hw; |
|
4177 struct net_device *netdev = adapter->netdev; |
|
4178 struct pci_dev *pdev = adapter->pdev; |
|
4179 struct e1000_rx_desc *rx_desc; |
|
4180 struct e1000_buffer *buffer_info; |
|
4181 struct sk_buff *skb; |
|
4182 unsigned int i; |
|
4183 unsigned int bufsz = adapter->rx_buffer_len; |
|
4184 |
|
4185 i = rx_ring->next_to_use; |
|
4186 buffer_info = &rx_ring->buffer_info[i]; |
|
4187 |
|
4188 while (cleaned_count--) { |
|
4189 skb = buffer_info->skb; |
|
4190 if (skb) { |
|
4191 skb_trim(skb, 0); |
|
4192 goto map_skb; |
|
4193 } |
|
4194 |
|
4195 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4196 if (unlikely(!skb)) { |
|
4197 /* Better luck next round */ |
|
4198 adapter->alloc_rx_buff_failed++; |
|
4199 break; |
|
4200 } |
|
4201 |
|
4202 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4203 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4204 struct sk_buff *oldskb = skb; |
|
4205 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
|
4206 "at %p\n", bufsz, skb->data); |
|
4207 /* Try again, without freeing the previous */ |
|
4208 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4209 /* Failed allocation, critical failure */ |
|
4210 if (!skb) { |
|
4211 dev_kfree_skb(oldskb); |
|
4212 adapter->alloc_rx_buff_failed++; |
|
4213 break; |
|
4214 } |
|
4215 |
|
4216 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4217 /* give up */ |
|
4218 dev_kfree_skb(skb); |
|
4219 dev_kfree_skb(oldskb); |
|
4220 adapter->alloc_rx_buff_failed++; |
|
4221 break; /* while !buffer_info->skb */ |
|
4222 } |
|
4223 |
|
4224 /* Use new allocation */ |
|
4225 dev_kfree_skb(oldskb); |
|
4226 } |
|
4227 buffer_info->skb = skb; |
|
4228 buffer_info->length = adapter->rx_buffer_len; |
|
4229 map_skb: |
|
4230 buffer_info->dma = pci_map_single(pdev, |
|
4231 skb->data, |
|
4232 buffer_info->length, |
|
4233 PCI_DMA_FROMDEVICE); |
|
4234 if (pci_dma_mapping_error(pdev, buffer_info->dma)) { |
|
4235 dev_kfree_skb(skb); |
|
4236 buffer_info->skb = NULL; |
|
4237 buffer_info->dma = 0; |
|
4238 adapter->alloc_rx_buff_failed++; |
|
4239 break; /* while !buffer_info->skb */ |
|
4240 } |
|
4241 |
|
4242 /* |
|
4243 * XXX if it was allocated cleanly it will never map to a |
|
4244 * boundary crossing |
|
4245 */ |
|
4246 |
|
4247 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4248 if (!e1000_check_64k_bound(adapter, |
|
4249 (void *)(unsigned long)buffer_info->dma, |
|
4250 adapter->rx_buffer_len)) { |
|
4251 DPRINTK(RX_ERR, ERR, |
|
4252 "dma align check failed: %u bytes at %p\n", |
|
4253 adapter->rx_buffer_len, |
|
4254 (void *)(unsigned long)buffer_info->dma); |
|
4255 if (!adapter->ecdev) { |
|
4256 dev_kfree_skb(skb); |
|
4257 buffer_info->skb = NULL; |
|
4258 } |
|
4259 |
|
4260 pci_unmap_single(pdev, buffer_info->dma, |
|
4261 adapter->rx_buffer_len, |
|
4262 PCI_DMA_FROMDEVICE); |
|
4263 buffer_info->dma = 0; |
|
4264 |
|
4265 adapter->alloc_rx_buff_failed++; |
|
4266 break; /* while !buffer_info->skb */ |
|
4267 } |
|
4268 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4269 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4270 |
|
4271 if (unlikely(++i == rx_ring->count)) |
|
4272 i = 0; |
|
4273 buffer_info = &rx_ring->buffer_info[i]; |
|
4274 } |
|
4275 |
|
4276 if (likely(rx_ring->next_to_use != i)) { |
|
4277 rx_ring->next_to_use = i; |
|
4278 if (unlikely(i-- == 0)) |
|
4279 i = (rx_ring->count - 1); |
|
4280 |
|
4281 /* Force memory writes to complete before letting h/w |
|
4282 * know there are new descriptors to fetch. (Only |
|
4283 * applicable for weak-ordered memory model archs, |
|
4284 * such as IA-64). */ |
|
4285 wmb(); |
|
4286 writel(i, hw->hw_addr + rx_ring->rdt); |
|
4287 } |
|
4288 } |
|
4289 |
|
4290 /** |
|
4291 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4292 * @adapter: |
|
4293 **/ |
|
4294 |
|
4295 static void e1000_smartspeed(struct e1000_adapter *adapter) |
|
4296 { |
|
4297 struct e1000_hw *hw = &adapter->hw; |
|
4298 u16 phy_status; |
|
4299 u16 phy_ctrl; |
|
4300 |
|
4301 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
|
4302 !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4303 return; |
|
4304 |
|
4305 if (adapter->smartspeed == 0) { |
|
4306 /* If Master/Slave config fault is asserted twice, |
|
4307 * we assume back-to-back */ |
|
4308 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4309 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4310 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4311 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4312 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4313 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4314 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4315 e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
|
4316 phy_ctrl); |
|
4317 adapter->smartspeed++; |
|
4318 if (!e1000_phy_setup_autoneg(hw) && |
|
4319 !e1000_read_phy_reg(hw, PHY_CTRL, |
|
4320 &phy_ctrl)) { |
|
4321 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4322 MII_CR_RESTART_AUTO_NEG); |
|
4323 e1000_write_phy_reg(hw, PHY_CTRL, |
|
4324 phy_ctrl); |
|
4325 } |
|
4326 } |
|
4327 return; |
|
4328 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4329 /* If still no link, perhaps using 2/3 pair cable */ |
|
4330 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4331 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4332 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
|
4333 if (!e1000_phy_setup_autoneg(hw) && |
|
4334 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { |
|
4335 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4336 MII_CR_RESTART_AUTO_NEG); |
|
4337 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
|
4338 } |
|
4339 } |
|
4340 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4341 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4342 adapter->smartspeed = 0; |
|
4343 } |
|
4344 |
|
4345 /** |
|
4346 * e1000_ioctl - |
|
4347 * @netdev: |
|
4348 * @ifreq: |
|
4349 * @cmd: |
|
4350 **/ |
|
4351 |
|
4352 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4353 { |
|
4354 switch (cmd) { |
|
4355 case SIOCGMIIPHY: |
|
4356 case SIOCGMIIREG: |
|
4357 case SIOCSMIIREG: |
|
4358 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4359 default: |
|
4360 return -EOPNOTSUPP; |
|
4361 } |
|
4362 } |
|
4363 |
|
4364 /** |
|
4365 * e1000_mii_ioctl - |
|
4366 * @netdev: |
|
4367 * @ifreq: |
|
4368 * @cmd: |
|
4369 **/ |
|
4370 |
|
4371 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
4372 int cmd) |
|
4373 { |
|
4374 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4375 struct e1000_hw *hw = &adapter->hw; |
|
4376 struct mii_ioctl_data *data = if_mii(ifr); |
|
4377 int retval; |
|
4378 u16 mii_reg; |
|
4379 u16 spddplx; |
|
4380 unsigned long flags; |
|
4381 |
|
4382 if (hw->media_type != e1000_media_type_copper) |
|
4383 return -EOPNOTSUPP; |
|
4384 |
|
4385 switch (cmd) { |
|
4386 case SIOCGMIIPHY: |
|
4387 data->phy_id = hw->phy_addr; |
|
4388 break; |
|
4389 case SIOCGMIIREG: |
|
4390 if (adapter->ecdev) return -EPERM; |
|
4391 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4392 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
|
4393 &data->val_out)) { |
|
4394 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4395 return -EIO; |
|
4396 } |
|
4397 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4398 break; |
|
4399 case SIOCSMIIREG: |
|
4400 if (adapter->ecdev) return -EPERM; |
|
4401 if (data->reg_num & ~(0x1F)) |
|
4402 return -EFAULT; |
|
4403 mii_reg = data->val_in; |
|
4404 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4405 if (e1000_write_phy_reg(hw, data->reg_num, |
|
4406 mii_reg)) { |
|
4407 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4408 return -EIO; |
|
4409 } |
|
4410 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4411 if (hw->media_type == e1000_media_type_copper) { |
|
4412 switch (data->reg_num) { |
|
4413 case PHY_CTRL: |
|
4414 if (mii_reg & MII_CR_POWER_DOWN) |
|
4415 break; |
|
4416 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4417 hw->autoneg = 1; |
|
4418 hw->autoneg_advertised = 0x2F; |
|
4419 } else { |
|
4420 if (mii_reg & 0x40) |
|
4421 spddplx = SPEED_1000; |
|
4422 else if (mii_reg & 0x2000) |
|
4423 spddplx = SPEED_100; |
|
4424 else |
|
4425 spddplx = SPEED_10; |
|
4426 spddplx += (mii_reg & 0x100) |
|
4427 ? DUPLEX_FULL : |
|
4428 DUPLEX_HALF; |
|
4429 retval = e1000_set_spd_dplx(adapter, |
|
4430 spddplx); |
|
4431 if (retval) |
|
4432 return retval; |
|
4433 } |
|
4434 if (netif_running(adapter->netdev)) |
|
4435 e1000_reinit_locked(adapter); |
|
4436 else |
|
4437 e1000_reset(adapter); |
|
4438 break; |
|
4439 case M88E1000_PHY_SPEC_CTRL: |
|
4440 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4441 if (e1000_phy_reset(hw)) |
|
4442 return -EIO; |
|
4443 break; |
|
4444 } |
|
4445 } else { |
|
4446 switch (data->reg_num) { |
|
4447 case PHY_CTRL: |
|
4448 if (mii_reg & MII_CR_POWER_DOWN) |
|
4449 break; |
|
4450 if (netif_running(adapter->netdev)) |
|
4451 e1000_reinit_locked(adapter); |
|
4452 else |
|
4453 e1000_reset(adapter); |
|
4454 break; |
|
4455 } |
|
4456 } |
|
4457 break; |
|
4458 default: |
|
4459 return -EOPNOTSUPP; |
|
4460 } |
|
4461 return E1000_SUCCESS; |
|
4462 } |
|
4463 |
|
4464 void e1000_pci_set_mwi(struct e1000_hw *hw) |
|
4465 { |
|
4466 struct e1000_adapter *adapter = hw->back; |
|
4467 int ret_val = pci_set_mwi(adapter->pdev); |
|
4468 |
|
4469 if (ret_val) |
|
4470 DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
|
4471 } |
|
4472 |
|
4473 void e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
4474 { |
|
4475 struct e1000_adapter *adapter = hw->back; |
|
4476 |
|
4477 pci_clear_mwi(adapter->pdev); |
|
4478 } |
|
4479 |
|
4480 int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
|
4481 { |
|
4482 struct e1000_adapter *adapter = hw->back; |
|
4483 return pcix_get_mmrbc(adapter->pdev); |
|
4484 } |
|
4485 |
|
4486 void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
|
4487 { |
|
4488 struct e1000_adapter *adapter = hw->back; |
|
4489 pcix_set_mmrbc(adapter->pdev, mmrbc); |
|
4490 } |
|
4491 |
|
4492 void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
|
4493 { |
|
4494 outl(value, port); |
|
4495 } |
|
4496 |
|
4497 static void e1000_vlan_rx_register(struct net_device *netdev, |
|
4498 struct vlan_group *grp) |
|
4499 { |
|
4500 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4501 struct e1000_hw *hw = &adapter->hw; |
|
4502 u32 ctrl, rctl; |
|
4503 |
|
4504 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4505 e1000_irq_disable(adapter); |
|
4506 adapter->vlgrp = grp; |
|
4507 |
|
4508 if (grp) { |
|
4509 /* enable VLAN tag insert/strip */ |
|
4510 ctrl = er32(CTRL); |
|
4511 ctrl |= E1000_CTRL_VME; |
|
4512 ew32(CTRL, ctrl); |
|
4513 |
|
4514 /* enable VLAN receive filtering */ |
|
4515 rctl = er32(RCTL); |
|
4516 rctl &= ~E1000_RCTL_CFIEN; |
|
4517 if (!(netdev->flags & IFF_PROMISC)) |
|
4518 rctl |= E1000_RCTL_VFE; |
|
4519 ew32(RCTL, rctl); |
|
4520 e1000_update_mng_vlan(adapter); |
|
4521 } else { |
|
4522 /* disable VLAN tag insert/strip */ |
|
4523 ctrl = er32(CTRL); |
|
4524 ctrl &= ~E1000_CTRL_VME; |
|
4525 ew32(CTRL, ctrl); |
|
4526 |
|
4527 /* disable VLAN receive filtering */ |
|
4528 rctl = er32(RCTL); |
|
4529 rctl &= ~E1000_RCTL_VFE; |
|
4530 ew32(RCTL, rctl); |
|
4531 |
|
4532 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
4533 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4534 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4535 } |
|
4536 } |
|
4537 |
|
4538 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4539 e1000_irq_enable(adapter); |
|
4540 } |
|
4541 |
|
4542 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
4543 { |
|
4544 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4545 struct e1000_hw *hw = &adapter->hw; |
|
4546 u32 vfta, index; |
|
4547 |
|
4548 if ((hw->mng_cookie.status & |
|
4549 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4550 (vid == adapter->mng_vlan_id)) |
|
4551 return; |
|
4552 /* add VID to filter table */ |
|
4553 index = (vid >> 5) & 0x7F; |
|
4554 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4555 vfta |= (1 << (vid & 0x1F)); |
|
4556 e1000_write_vfta(hw, index, vfta); |
|
4557 } |
|
4558 |
|
4559 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
4560 { |
|
4561 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4562 struct e1000_hw *hw = &adapter->hw; |
|
4563 u32 vfta, index; |
|
4564 |
|
4565 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4566 e1000_irq_disable(adapter); |
|
4567 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
4568 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4569 e1000_irq_enable(adapter); |
|
4570 |
|
4571 /* remove VID from filter table */ |
|
4572 index = (vid >> 5) & 0x7F; |
|
4573 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4574 vfta &= ~(1 << (vid & 0x1F)); |
|
4575 e1000_write_vfta(hw, index, vfta); |
|
4576 } |
|
4577 |
|
4578 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
4579 { |
|
4580 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
4581 |
|
4582 if (adapter->vlgrp) { |
|
4583 u16 vid; |
|
4584 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
|
4585 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
4586 continue; |
|
4587 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
4588 } |
|
4589 } |
|
4590 } |
|
4591 |
|
4592 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
|
4593 { |
|
4594 struct e1000_hw *hw = &adapter->hw; |
|
4595 |
|
4596 hw->autoneg = 0; |
|
4597 |
|
4598 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
4599 if ((hw->media_type == e1000_media_type_fiber) && |
|
4600 spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
|
4601 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
4602 return -EINVAL; |
|
4603 } |
|
4604 |
|
4605 switch (spddplx) { |
|
4606 case SPEED_10 + DUPLEX_HALF: |
|
4607 hw->forced_speed_duplex = e1000_10_half; |
|
4608 break; |
|
4609 case SPEED_10 + DUPLEX_FULL: |
|
4610 hw->forced_speed_duplex = e1000_10_full; |
|
4611 break; |
|
4612 case SPEED_100 + DUPLEX_HALF: |
|
4613 hw->forced_speed_duplex = e1000_100_half; |
|
4614 break; |
|
4615 case SPEED_100 + DUPLEX_FULL: |
|
4616 hw->forced_speed_duplex = e1000_100_full; |
|
4617 break; |
|
4618 case SPEED_1000 + DUPLEX_FULL: |
|
4619 hw->autoneg = 1; |
|
4620 hw->autoneg_advertised = ADVERTISE_1000_FULL; |
|
4621 break; |
|
4622 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
4623 default: |
|
4624 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
|
4625 return -EINVAL; |
|
4626 } |
|
4627 return 0; |
|
4628 } |
|
4629 |
|
4630 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
|
4631 { |
|
4632 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4633 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4634 struct e1000_hw *hw = &adapter->hw; |
|
4635 u32 ctrl, ctrl_ext, rctl, status; |
|
4636 u32 wufc = adapter->wol; |
|
4637 #ifdef CONFIG_PM |
|
4638 int retval = 0; |
|
4639 #endif |
|
4640 |
|
4641 if (adapter->ecdev) |
|
4642 return -EBUSY; |
|
4643 |
|
4644 netif_device_detach(netdev); |
|
4645 |
|
4646 if (netif_running(netdev)) { |
|
4647 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
4648 e1000_down(adapter); |
|
4649 } |
|
4650 |
|
4651 #ifdef CONFIG_PM |
|
4652 retval = pci_save_state(pdev); |
|
4653 if (retval) |
|
4654 return retval; |
|
4655 #endif |
|
4656 |
|
4657 status = er32(STATUS); |
|
4658 if (status & E1000_STATUS_LU) |
|
4659 wufc &= ~E1000_WUFC_LNKC; |
|
4660 |
|
4661 if (wufc) { |
|
4662 e1000_setup_rctl(adapter); |
|
4663 e1000_set_rx_mode(netdev); |
|
4664 |
|
4665 /* turn on all-multi mode if wake on multicast is enabled */ |
|
4666 if (wufc & E1000_WUFC_MC) { |
|
4667 rctl = er32(RCTL); |
|
4668 rctl |= E1000_RCTL_MPE; |
|
4669 ew32(RCTL, rctl); |
|
4670 } |
|
4671 |
|
4672 if (hw->mac_type >= e1000_82540) { |
|
4673 ctrl = er32(CTRL); |
|
4674 /* advertise wake from D3Cold */ |
|
4675 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
4676 /* phy power management enable */ |
|
4677 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
4678 ctrl |= E1000_CTRL_ADVD3WUC | |
|
4679 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
4680 ew32(CTRL, ctrl); |
|
4681 } |
|
4682 |
|
4683 if (hw->media_type == e1000_media_type_fiber || |
|
4684 hw->media_type == e1000_media_type_internal_serdes) { |
|
4685 /* keep the laser running in D3 */ |
|
4686 ctrl_ext = er32(CTRL_EXT); |
|
4687 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
4688 ew32(CTRL_EXT, ctrl_ext); |
|
4689 } |
|
4690 |
|
4691 ew32(WUC, E1000_WUC_PME_EN); |
|
4692 ew32(WUFC, wufc); |
|
4693 } else { |
|
4694 ew32(WUC, 0); |
|
4695 ew32(WUFC, 0); |
|
4696 } |
|
4697 |
|
4698 e1000_release_manageability(adapter); |
|
4699 |
|
4700 *enable_wake = !!wufc; |
|
4701 |
|
4702 /* make sure adapter isn't asleep if manageability is enabled */ |
|
4703 if (adapter->en_mng_pt) |
|
4704 *enable_wake = true; |
|
4705 |
|
4706 if (netif_running(netdev)) |
|
4707 e1000_free_irq(adapter); |
|
4708 |
|
4709 pci_disable_device(pdev); |
|
4710 |
|
4711 return 0; |
|
4712 } |
|
4713 |
|
4714 #ifdef CONFIG_PM |
|
4715 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
4716 { |
|
4717 int retval; |
|
4718 bool wake; |
|
4719 |
|
4720 retval = __e1000_shutdown(pdev, &wake); |
|
4721 if (retval) |
|
4722 return retval; |
|
4723 |
|
4724 if (wake) { |
|
4725 pci_prepare_to_sleep(pdev); |
|
4726 } else { |
|
4727 pci_wake_from_d3(pdev, false); |
|
4728 pci_set_power_state(pdev, PCI_D3hot); |
|
4729 } |
|
4730 |
|
4731 return 0; |
|
4732 } |
|
4733 |
|
4734 static int e1000_resume(struct pci_dev *pdev) |
|
4735 { |
|
4736 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4737 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4738 struct e1000_hw *hw = &adapter->hw; |
|
4739 u32 err; |
|
4740 |
|
4741 if (adapter->ecdev) |
|
4742 return -EBUSY; |
|
4743 |
|
4744 pci_set_power_state(pdev, PCI_D0); |
|
4745 pci_restore_state(pdev); |
|
4746 |
|
4747 if (adapter->need_ioport) |
|
4748 err = pci_enable_device(pdev); |
|
4749 else |
|
4750 err = pci_enable_device_mem(pdev); |
|
4751 if (err) { |
|
4752 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); |
|
4753 return err; |
|
4754 } |
|
4755 pci_set_master(pdev); |
|
4756 |
|
4757 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4758 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4759 |
|
4760 if (netif_running(netdev)) { |
|
4761 err = e1000_request_irq(adapter); |
|
4762 if (err) |
|
4763 return err; |
|
4764 } |
|
4765 |
|
4766 e1000_power_up_phy(adapter); |
|
4767 e1000_reset(adapter); |
|
4768 ew32(WUS, ~0); |
|
4769 |
|
4770 e1000_init_manageability(adapter); |
|
4771 |
|
4772 if (netif_running(netdev)) |
|
4773 e1000_up(adapter); |
|
4774 |
|
4775 if (!adapter->ecdev) netif_device_attach(netdev); |
|
4776 |
|
4777 return 0; |
|
4778 } |
|
4779 #endif |
|
4780 |
|
4781 static void e1000_shutdown(struct pci_dev *pdev) |
|
4782 { |
|
4783 bool wake; |
|
4784 |
|
4785 __e1000_shutdown(pdev, &wake); |
|
4786 |
|
4787 if (system_state == SYSTEM_POWER_OFF) { |
|
4788 pci_wake_from_d3(pdev, wake); |
|
4789 pci_set_power_state(pdev, PCI_D3hot); |
|
4790 } |
|
4791 } |
|
4792 |
|
4793 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
4794 /* |
|
4795 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
4796 * without having to re-enable interrupts. It's not called while |
|
4797 * the interrupt routine is executing. |
|
4798 */ |
|
4799 static void e1000_netpoll(struct net_device *netdev) |
|
4800 { |
|
4801 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4802 |
|
4803 disable_irq(adapter->pdev->irq); |
|
4804 e1000_intr(adapter->pdev->irq, netdev); |
|
4805 enable_irq(adapter->pdev->irq); |
|
4806 } |
|
4807 #endif |
|
4808 |
|
4809 /** |
|
4810 * e1000_io_error_detected - called when PCI error is detected |
|
4811 * @pdev: Pointer to PCI device |
|
4812 * @state: The current pci connection state |
|
4813 * |
|
4814 * This function is called after a PCI bus error affecting |
|
4815 * this device has been detected. |
|
4816 */ |
|
4817 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
4818 pci_channel_state_t state) |
|
4819 { |
|
4820 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4821 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4822 |
|
4823 netif_device_detach(netdev); |
|
4824 |
|
4825 if (state == pci_channel_io_perm_failure) |
|
4826 return PCI_ERS_RESULT_DISCONNECT; |
|
4827 |
|
4828 if (netif_running(netdev)) |
|
4829 e1000_down(adapter); |
|
4830 pci_disable_device(pdev); |
|
4831 |
|
4832 /* Request a slot slot reset. */ |
|
4833 return PCI_ERS_RESULT_NEED_RESET; |
|
4834 } |
|
4835 |
|
4836 /** |
|
4837 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
4838 * @pdev: Pointer to PCI device |
|
4839 * |
|
4840 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
4841 * resembles the first-half of the e1000_resume routine. |
|
4842 */ |
|
4843 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
4844 { |
|
4845 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4846 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4847 struct e1000_hw *hw = &adapter->hw; |
|
4848 int err; |
|
4849 |
|
4850 if (adapter->need_ioport) |
|
4851 err = pci_enable_device(pdev); |
|
4852 else |
|
4853 err = pci_enable_device_mem(pdev); |
|
4854 if (err) { |
|
4855 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); |
|
4856 return PCI_ERS_RESULT_DISCONNECT; |
|
4857 } |
|
4858 pci_set_master(pdev); |
|
4859 |
|
4860 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4861 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4862 |
|
4863 e1000_reset(adapter); |
|
4864 ew32(WUS, ~0); |
|
4865 |
|
4866 return PCI_ERS_RESULT_RECOVERED; |
|
4867 } |
|
4868 |
|
4869 /** |
|
4870 * e1000_io_resume - called when traffic can start flowing again. |
|
4871 * @pdev: Pointer to PCI device |
|
4872 * |
|
4873 * This callback is called when the error recovery driver tells us that |
|
4874 * its OK to resume normal operation. Implementation resembles the |
|
4875 * second-half of the e1000_resume routine. |
|
4876 */ |
|
4877 static void e1000_io_resume(struct pci_dev *pdev) |
|
4878 { |
|
4879 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4880 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4881 |
|
4882 e1000_init_manageability(adapter); |
|
4883 |
|
4884 if (netif_running(netdev)) { |
|
4885 if (e1000_up(adapter)) { |
|
4886 printk("e1000: can't bring device back up after reset\n"); |
|
4887 return; |
|
4888 } |
|
4889 } |
|
4890 |
|
4891 netif_device_attach(netdev); |
|
4892 } |
|
4893 |
|
4894 /* e1000_main.c */ |