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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2006 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 *******************************************************************************/ |
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28 |
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29 #include "e1000.h" |
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30 #include <net/ip6_checksum.h> |
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31 #include <linux/io.h> |
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32 #include <linux/prefetch.h> |
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33 |
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34 /* Intel Media SOC GbE MDIO physical base address */ |
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35 static unsigned long ce4100_gbe_mdio_base_phy; |
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36 /* Intel Media SOC GbE MDIO virtual base address */ |
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37 void __iomem *ce4100_gbe_mdio_base_virt; |
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38 |
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39 char e1000_driver_name[] = "e1000"; |
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40 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
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41 #define DRV_VERSION "7.3.21-k8-NAPI" |
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42 const char e1000_driver_version[] = DRV_VERSION; |
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43 static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
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44 |
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45 /* e1000_pci_tbl - PCI Device ID Table |
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46 * |
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47 * Last entry must be all 0s |
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48 * |
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49 * Macro expands to... |
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50 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} |
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51 */ |
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52 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
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53 INTEL_E1000_ETHERNET_DEVICE(0x1000), |
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54 INTEL_E1000_ETHERNET_DEVICE(0x1001), |
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55 INTEL_E1000_ETHERNET_DEVICE(0x1004), |
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56 INTEL_E1000_ETHERNET_DEVICE(0x1008), |
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57 INTEL_E1000_ETHERNET_DEVICE(0x1009), |
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58 INTEL_E1000_ETHERNET_DEVICE(0x100C), |
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59 INTEL_E1000_ETHERNET_DEVICE(0x100D), |
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60 INTEL_E1000_ETHERNET_DEVICE(0x100E), |
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61 INTEL_E1000_ETHERNET_DEVICE(0x100F), |
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62 INTEL_E1000_ETHERNET_DEVICE(0x1010), |
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63 INTEL_E1000_ETHERNET_DEVICE(0x1011), |
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64 INTEL_E1000_ETHERNET_DEVICE(0x1012), |
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65 INTEL_E1000_ETHERNET_DEVICE(0x1013), |
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66 INTEL_E1000_ETHERNET_DEVICE(0x1014), |
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67 INTEL_E1000_ETHERNET_DEVICE(0x1015), |
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68 INTEL_E1000_ETHERNET_DEVICE(0x1016), |
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69 INTEL_E1000_ETHERNET_DEVICE(0x1017), |
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70 INTEL_E1000_ETHERNET_DEVICE(0x1018), |
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71 INTEL_E1000_ETHERNET_DEVICE(0x1019), |
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72 INTEL_E1000_ETHERNET_DEVICE(0x101A), |
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73 INTEL_E1000_ETHERNET_DEVICE(0x101D), |
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74 INTEL_E1000_ETHERNET_DEVICE(0x101E), |
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75 INTEL_E1000_ETHERNET_DEVICE(0x1026), |
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76 INTEL_E1000_ETHERNET_DEVICE(0x1027), |
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77 INTEL_E1000_ETHERNET_DEVICE(0x1028), |
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78 INTEL_E1000_ETHERNET_DEVICE(0x1075), |
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79 INTEL_E1000_ETHERNET_DEVICE(0x1076), |
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80 INTEL_E1000_ETHERNET_DEVICE(0x1077), |
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81 INTEL_E1000_ETHERNET_DEVICE(0x1078), |
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82 INTEL_E1000_ETHERNET_DEVICE(0x1079), |
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83 INTEL_E1000_ETHERNET_DEVICE(0x107A), |
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84 INTEL_E1000_ETHERNET_DEVICE(0x107B), |
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85 INTEL_E1000_ETHERNET_DEVICE(0x107C), |
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86 INTEL_E1000_ETHERNET_DEVICE(0x108A), |
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87 INTEL_E1000_ETHERNET_DEVICE(0x1099), |
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88 INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
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89 INTEL_E1000_ETHERNET_DEVICE(0x2E6E), |
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90 /* required last entry */ |
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91 {0,} |
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92 }; |
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93 |
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94 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
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95 |
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96 int e1000_up(struct e1000_adapter *adapter); |
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97 void e1000_down(struct e1000_adapter *adapter); |
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98 void e1000_reinit_locked(struct e1000_adapter *adapter); |
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99 void e1000_reset(struct e1000_adapter *adapter); |
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100 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
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101 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); |
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102 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); |
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103 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); |
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104 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
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105 struct e1000_tx_ring *txdr); |
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106 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
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107 struct e1000_rx_ring *rxdr); |
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108 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
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109 struct e1000_tx_ring *tx_ring); |
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110 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
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111 struct e1000_rx_ring *rx_ring); |
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112 void e1000_update_stats(struct e1000_adapter *adapter); |
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113 |
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114 static int e1000_init_module(void); |
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115 static void e1000_exit_module(void); |
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116 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
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117 static void __devexit e1000_remove(struct pci_dev *pdev); |
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118 static int e1000_alloc_queues(struct e1000_adapter *adapter); |
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119 static int e1000_sw_init(struct e1000_adapter *adapter); |
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120 static int e1000_open(struct net_device *netdev); |
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121 static int e1000_close(struct net_device *netdev); |
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122 static void e1000_configure_tx(struct e1000_adapter *adapter); |
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123 static void e1000_configure_rx(struct e1000_adapter *adapter); |
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124 static void e1000_setup_rctl(struct e1000_adapter *adapter); |
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125 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
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126 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); |
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127 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
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128 struct e1000_tx_ring *tx_ring); |
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129 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
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130 struct e1000_rx_ring *rx_ring); |
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131 static void e1000_set_rx_mode(struct net_device *netdev); |
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132 static void e1000_update_phy_info(unsigned long data); |
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133 static void e1000_update_phy_info_task(struct work_struct *work); |
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134 static void e1000_watchdog(unsigned long data); |
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135 static void e1000_82547_tx_fifo_stall(unsigned long data); |
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136 static void e1000_82547_tx_fifo_stall_task(struct work_struct *work); |
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137 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
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138 struct net_device *netdev); |
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139 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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140 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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141 static int e1000_set_mac(struct net_device *netdev, void *p); |
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142 static irqreturn_t e1000_intr(int irq, void *data); |
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143 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
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144 struct e1000_tx_ring *tx_ring); |
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145 static int e1000_clean(struct napi_struct *napi, int budget); |
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146 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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147 struct e1000_rx_ring *rx_ring, |
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148 int *work_done, int work_to_do); |
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149 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
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150 struct e1000_rx_ring *rx_ring, |
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151 int *work_done, int work_to_do); |
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152 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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153 struct e1000_rx_ring *rx_ring, |
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154 int cleaned_count); |
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155 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
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156 struct e1000_rx_ring *rx_ring, |
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157 int cleaned_count); |
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158 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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159 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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160 int cmd); |
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161 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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162 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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163 static void e1000_tx_timeout(struct net_device *dev); |
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164 static void e1000_reset_task(struct work_struct *work); |
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165 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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166 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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167 struct sk_buff *skb); |
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168 |
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169 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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170 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
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171 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); |
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172 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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173 |
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174 #ifdef CONFIG_PM |
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175 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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176 static int e1000_resume(struct pci_dev *pdev); |
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177 #endif |
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178 static void e1000_shutdown(struct pci_dev *pdev); |
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179 |
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180 #ifdef CONFIG_NET_POLL_CONTROLLER |
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181 /* for netdump / net console */ |
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182 static void e1000_netpoll (struct net_device *netdev); |
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183 #endif |
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184 |
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185 #define COPYBREAK_DEFAULT 256 |
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186 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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187 module_param(copybreak, uint, 0644); |
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188 MODULE_PARM_DESC(copybreak, |
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189 "Maximum size of packet that is copied to a new buffer on receive"); |
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190 |
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191 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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192 pci_channel_state_t state); |
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193 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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194 static void e1000_io_resume(struct pci_dev *pdev); |
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195 |
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196 static struct pci_error_handlers e1000_err_handler = { |
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197 .error_detected = e1000_io_error_detected, |
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198 .slot_reset = e1000_io_slot_reset, |
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199 .resume = e1000_io_resume, |
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200 }; |
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201 |
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202 static struct pci_driver e1000_driver = { |
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203 .name = e1000_driver_name, |
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204 .id_table = e1000_pci_tbl, |
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205 .probe = e1000_probe, |
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206 .remove = __devexit_p(e1000_remove), |
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207 #ifdef CONFIG_PM |
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208 /* Power Management Hooks */ |
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209 .suspend = e1000_suspend, |
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210 .resume = e1000_resume, |
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211 #endif |
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212 .shutdown = e1000_shutdown, |
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213 .err_handler = &e1000_err_handler |
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214 }; |
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215 |
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216 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
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217 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); |
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218 MODULE_LICENSE("GPL"); |
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219 MODULE_VERSION(DRV_VERSION); |
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220 |
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221 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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222 module_param(debug, int, 0); |
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223 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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224 |
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225 /** |
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226 * e1000_get_hw_dev - return device |
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227 * used by hardware layer to print debugging information |
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228 * |
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229 **/ |
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230 struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) |
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231 { |
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232 struct e1000_adapter *adapter = hw->back; |
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233 return adapter->netdev; |
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234 } |
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235 |
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236 /** |
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237 * e1000_init_module - Driver Registration Routine |
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238 * |
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239 * e1000_init_module is the first routine called when the driver is |
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240 * loaded. All it does is register with the PCI subsystem. |
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241 **/ |
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242 |
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243 static int __init e1000_init_module(void) |
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244 { |
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245 int ret; |
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246 pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version); |
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247 |
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248 pr_info("%s\n", e1000_copyright); |
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249 |
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250 ret = pci_register_driver(&e1000_driver); |
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251 if (copybreak != COPYBREAK_DEFAULT) { |
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252 if (copybreak == 0) |
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253 pr_info("copybreak disabled\n"); |
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254 else |
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255 pr_info("copybreak enabled for " |
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256 "packets <= %u bytes\n", copybreak); |
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257 } |
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258 return ret; |
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259 } |
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260 |
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261 module_init(e1000_init_module); |
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262 |
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263 /** |
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264 * e1000_exit_module - Driver Exit Cleanup Routine |
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265 * |
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266 * e1000_exit_module is called just before the driver is removed |
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267 * from memory. |
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268 **/ |
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269 |
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270 static void __exit e1000_exit_module(void) |
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271 { |
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272 pci_unregister_driver(&e1000_driver); |
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273 } |
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274 |
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275 module_exit(e1000_exit_module); |
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276 |
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277 static int e1000_request_irq(struct e1000_adapter *adapter) |
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278 { |
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279 struct net_device *netdev = adapter->netdev; |
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280 irq_handler_t handler = e1000_intr; |
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281 int irq_flags = IRQF_SHARED; |
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282 int err; |
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283 |
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284 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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285 netdev); |
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286 if (err) { |
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287 e_err(probe, "Unable to allocate interrupt Error: %d\n", err); |
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288 } |
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289 |
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290 return err; |
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291 } |
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292 |
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293 static void e1000_free_irq(struct e1000_adapter *adapter) |
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294 { |
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295 struct net_device *netdev = adapter->netdev; |
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296 |
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297 free_irq(adapter->pdev->irq, netdev); |
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298 } |
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299 |
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300 /** |
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301 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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302 * @adapter: board private structure |
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303 **/ |
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304 |
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305 static void e1000_irq_disable(struct e1000_adapter *adapter) |
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306 { |
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307 struct e1000_hw *hw = &adapter->hw; |
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308 |
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309 ew32(IMC, ~0); |
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310 E1000_WRITE_FLUSH(); |
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311 synchronize_irq(adapter->pdev->irq); |
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312 } |
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313 |
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314 /** |
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315 * e1000_irq_enable - Enable default interrupt generation settings |
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316 * @adapter: board private structure |
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317 **/ |
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318 |
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319 static void e1000_irq_enable(struct e1000_adapter *adapter) |
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320 { |
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321 struct e1000_hw *hw = &adapter->hw; |
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322 |
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323 ew32(IMS, IMS_ENABLE_MASK); |
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324 E1000_WRITE_FLUSH(); |
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325 } |
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326 |
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327 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
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328 { |
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329 struct e1000_hw *hw = &adapter->hw; |
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330 struct net_device *netdev = adapter->netdev; |
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331 u16 vid = hw->mng_cookie.vlan_id; |
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332 u16 old_vid = adapter->mng_vlan_id; |
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333 if (adapter->vlgrp) { |
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334 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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335 if (hw->mng_cookie.status & |
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336 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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337 e1000_vlan_rx_add_vid(netdev, vid); |
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338 adapter->mng_vlan_id = vid; |
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339 } else |
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340 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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341 |
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342 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
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343 (vid != old_vid) && |
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344 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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345 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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346 } else |
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347 adapter->mng_vlan_id = vid; |
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348 } |
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349 } |
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350 |
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351 static void e1000_init_manageability(struct e1000_adapter *adapter) |
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352 { |
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353 struct e1000_hw *hw = &adapter->hw; |
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354 |
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355 if (adapter->en_mng_pt) { |
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356 u32 manc = er32(MANC); |
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357 |
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358 /* disable hardware interception of ARP */ |
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359 manc &= ~(E1000_MANC_ARP_EN); |
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360 |
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361 ew32(MANC, manc); |
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362 } |
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363 } |
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364 |
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365 static void e1000_release_manageability(struct e1000_adapter *adapter) |
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366 { |
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367 struct e1000_hw *hw = &adapter->hw; |
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368 |
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369 if (adapter->en_mng_pt) { |
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370 u32 manc = er32(MANC); |
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371 |
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372 /* re-enable hardware interception of ARP */ |
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373 manc |= E1000_MANC_ARP_EN; |
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374 |
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375 ew32(MANC, manc); |
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376 } |
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377 } |
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378 |
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379 /** |
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380 * e1000_configure - configure the hardware for RX and TX |
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381 * @adapter = private board structure |
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382 **/ |
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383 static void e1000_configure(struct e1000_adapter *adapter) |
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384 { |
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385 struct net_device *netdev = adapter->netdev; |
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386 int i; |
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387 |
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388 e1000_set_rx_mode(netdev); |
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389 |
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390 e1000_restore_vlan(adapter); |
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391 e1000_init_manageability(adapter); |
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392 |
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393 e1000_configure_tx(adapter); |
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394 e1000_setup_rctl(adapter); |
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395 e1000_configure_rx(adapter); |
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396 /* call E1000_DESC_UNUSED which always leaves |
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397 * at least 1 descriptor unused to make sure |
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398 * next_to_use != next_to_clean */ |
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399 for (i = 0; i < adapter->num_rx_queues; i++) { |
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400 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
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401 adapter->alloc_rx_buf(adapter, ring, |
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402 E1000_DESC_UNUSED(ring)); |
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403 } |
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404 } |
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405 |
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406 int e1000_up(struct e1000_adapter *adapter) |
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407 { |
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408 struct e1000_hw *hw = &adapter->hw; |
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409 |
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410 /* hardware has been reset, we need to reload some things */ |
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411 e1000_configure(adapter); |
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412 |
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413 clear_bit(__E1000_DOWN, &adapter->flags); |
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414 |
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415 napi_enable(&adapter->napi); |
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416 |
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417 e1000_irq_enable(adapter); |
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418 |
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419 netif_wake_queue(adapter->netdev); |
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420 |
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421 /* fire a link change interrupt to start the watchdog */ |
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422 ew32(ICS, E1000_ICS_LSC); |
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423 return 0; |
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424 } |
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425 |
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426 /** |
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427 * e1000_power_up_phy - restore link in case the phy was powered down |
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428 * @adapter: address of board private structure |
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429 * |
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430 * The phy may be powered down to save power and turn off link when the |
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431 * driver is unloaded and wake on lan is not enabled (among others) |
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432 * *** this routine MUST be followed by a call to e1000_reset *** |
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433 * |
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434 **/ |
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435 |
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436 void e1000_power_up_phy(struct e1000_adapter *adapter) |
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437 { |
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438 struct e1000_hw *hw = &adapter->hw; |
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439 u16 mii_reg = 0; |
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440 |
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441 /* Just clear the power down bit to wake the phy back up */ |
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442 if (hw->media_type == e1000_media_type_copper) { |
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443 /* according to the manual, the phy will retain its |
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444 * settings across a power-down/up cycle */ |
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445 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
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446 mii_reg &= ~MII_CR_POWER_DOWN; |
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447 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
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448 } |
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449 } |
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450 |
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451 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
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452 { |
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453 struct e1000_hw *hw = &adapter->hw; |
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454 |
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455 /* Power down the PHY so no link is implied when interface is down * |
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456 * The PHY cannot be powered down if any of the following is true * |
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457 * (a) WoL is enabled |
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458 * (b) AMT is active |
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459 * (c) SoL/IDER session is active */ |
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460 if (!adapter->wol && hw->mac_type >= e1000_82540 && |
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461 hw->media_type == e1000_media_type_copper) { |
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462 u16 mii_reg = 0; |
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463 |
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464 switch (hw->mac_type) { |
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465 case e1000_82540: |
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466 case e1000_82545: |
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467 case e1000_82545_rev_3: |
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468 case e1000_82546: |
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469 case e1000_ce4100: |
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470 case e1000_82546_rev_3: |
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471 case e1000_82541: |
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472 case e1000_82541_rev_2: |
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473 case e1000_82547: |
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474 case e1000_82547_rev_2: |
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475 if (er32(MANC) & E1000_MANC_SMBUS_EN) |
|
476 goto out; |
|
477 break; |
|
478 default: |
|
479 goto out; |
|
480 } |
|
481 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
|
482 mii_reg |= MII_CR_POWER_DOWN; |
|
483 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
|
484 mdelay(1); |
|
485 } |
|
486 out: |
|
487 return; |
|
488 } |
|
489 |
|
490 void e1000_down(struct e1000_adapter *adapter) |
|
491 { |
|
492 struct e1000_hw *hw = &adapter->hw; |
|
493 struct net_device *netdev = adapter->netdev; |
|
494 u32 rctl, tctl; |
|
495 |
|
496 |
|
497 /* disable receives in the hardware */ |
|
498 rctl = er32(RCTL); |
|
499 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
500 /* flush and sleep below */ |
|
501 |
|
502 netif_tx_disable(netdev); |
|
503 |
|
504 /* disable transmits in the hardware */ |
|
505 tctl = er32(TCTL); |
|
506 tctl &= ~E1000_TCTL_EN; |
|
507 ew32(TCTL, tctl); |
|
508 /* flush both disables and wait for them to finish */ |
|
509 E1000_WRITE_FLUSH(); |
|
510 msleep(10); |
|
511 |
|
512 napi_disable(&adapter->napi); |
|
513 |
|
514 e1000_irq_disable(adapter); |
|
515 |
|
516 /* |
|
517 * Setting DOWN must be after irq_disable to prevent |
|
518 * a screaming interrupt. Setting DOWN also prevents |
|
519 * timers and tasks from rescheduling. |
|
520 */ |
|
521 set_bit(__E1000_DOWN, &adapter->flags); |
|
522 |
|
523 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
524 del_timer_sync(&adapter->watchdog_timer); |
|
525 del_timer_sync(&adapter->phy_info_timer); |
|
526 |
|
527 adapter->link_speed = 0; |
|
528 adapter->link_duplex = 0; |
|
529 netif_carrier_off(netdev); |
|
530 |
|
531 e1000_reset(adapter); |
|
532 e1000_clean_all_tx_rings(adapter); |
|
533 e1000_clean_all_rx_rings(adapter); |
|
534 } |
|
535 |
|
536 static void e1000_reinit_safe(struct e1000_adapter *adapter) |
|
537 { |
|
538 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
539 msleep(1); |
|
540 rtnl_lock(); |
|
541 e1000_down(adapter); |
|
542 e1000_up(adapter); |
|
543 rtnl_unlock(); |
|
544 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
545 } |
|
546 |
|
547 void e1000_reinit_locked(struct e1000_adapter *adapter) |
|
548 { |
|
549 /* if rtnl_lock is not held the call path is bogus */ |
|
550 ASSERT_RTNL(); |
|
551 WARN_ON(in_interrupt()); |
|
552 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
553 msleep(1); |
|
554 e1000_down(adapter); |
|
555 e1000_up(adapter); |
|
556 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
557 } |
|
558 |
|
559 void e1000_reset(struct e1000_adapter *adapter) |
|
560 { |
|
561 struct e1000_hw *hw = &adapter->hw; |
|
562 u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
|
563 bool legacy_pba_adjust = false; |
|
564 u16 hwm; |
|
565 |
|
566 /* Repartition Pba for greater than 9k mtu |
|
567 * To take effect CTRL.RST is required. |
|
568 */ |
|
569 |
|
570 switch (hw->mac_type) { |
|
571 case e1000_82542_rev2_0: |
|
572 case e1000_82542_rev2_1: |
|
573 case e1000_82543: |
|
574 case e1000_82544: |
|
575 case e1000_82540: |
|
576 case e1000_82541: |
|
577 case e1000_82541_rev_2: |
|
578 legacy_pba_adjust = true; |
|
579 pba = E1000_PBA_48K; |
|
580 break; |
|
581 case e1000_82545: |
|
582 case e1000_82545_rev_3: |
|
583 case e1000_82546: |
|
584 case e1000_ce4100: |
|
585 case e1000_82546_rev_3: |
|
586 pba = E1000_PBA_48K; |
|
587 break; |
|
588 case e1000_82547: |
|
589 case e1000_82547_rev_2: |
|
590 legacy_pba_adjust = true; |
|
591 pba = E1000_PBA_30K; |
|
592 break; |
|
593 case e1000_undefined: |
|
594 case e1000_num_macs: |
|
595 break; |
|
596 } |
|
597 |
|
598 if (legacy_pba_adjust) { |
|
599 if (hw->max_frame_size > E1000_RXBUFFER_8192) |
|
600 pba -= 8; /* allocate more FIFO for Tx */ |
|
601 |
|
602 if (hw->mac_type == e1000_82547) { |
|
603 adapter->tx_fifo_head = 0; |
|
604 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
605 adapter->tx_fifo_size = |
|
606 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
607 atomic_set(&adapter->tx_fifo_stall, 0); |
|
608 } |
|
609 } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
610 /* adjust PBA for jumbo frames */ |
|
611 ew32(PBA, pba); |
|
612 |
|
613 /* To maintain wire speed transmits, the Tx FIFO should be |
|
614 * large enough to accommodate two full transmit packets, |
|
615 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
616 * the Rx FIFO should be large enough to accommodate at least |
|
617 * one full receive packet and is similarly rounded up and |
|
618 * expressed in KB. */ |
|
619 pba = er32(PBA); |
|
620 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
621 tx_space = pba >> 16; |
|
622 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
623 pba &= 0xffff; |
|
624 /* |
|
625 * the tx fifo also stores 16 bytes of information about the tx |
|
626 * but don't include ethernet FCS because hardware appends it |
|
627 */ |
|
628 min_tx_space = (hw->max_frame_size + |
|
629 sizeof(struct e1000_tx_desc) - |
|
630 ETH_FCS_LEN) * 2; |
|
631 min_tx_space = ALIGN(min_tx_space, 1024); |
|
632 min_tx_space >>= 10; |
|
633 /* software strips receive CRC, so leave room for it */ |
|
634 min_rx_space = hw->max_frame_size; |
|
635 min_rx_space = ALIGN(min_rx_space, 1024); |
|
636 min_rx_space >>= 10; |
|
637 |
|
638 /* If current Tx allocation is less than the min Tx FIFO size, |
|
639 * and the min Tx FIFO size is less than the current Rx FIFO |
|
640 * allocation, take space away from current Rx allocation */ |
|
641 if (tx_space < min_tx_space && |
|
642 ((min_tx_space - tx_space) < pba)) { |
|
643 pba = pba - (min_tx_space - tx_space); |
|
644 |
|
645 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
646 switch (hw->mac_type) { |
|
647 case e1000_82545 ... e1000_82546_rev_3: |
|
648 pba &= ~(E1000_PBA_8K - 1); |
|
649 break; |
|
650 default: |
|
651 break; |
|
652 } |
|
653 |
|
654 /* if short on rx space, rx wins and must trump tx |
|
655 * adjustment or use Early Receive if available */ |
|
656 if (pba < min_rx_space) |
|
657 pba = min_rx_space; |
|
658 } |
|
659 } |
|
660 |
|
661 ew32(PBA, pba); |
|
662 |
|
663 /* |
|
664 * flow control settings: |
|
665 * The high water mark must be low enough to fit one full frame |
|
666 * (or the size used for early receive) above it in the Rx FIFO. |
|
667 * Set it to the lower of: |
|
668 * - 90% of the Rx FIFO size, and |
|
669 * - the full Rx FIFO size minus the early receive size (for parts |
|
670 * with ERT support assuming ERT set to E1000_ERT_2048), or |
|
671 * - the full Rx FIFO size minus one full frame |
|
672 */ |
|
673 hwm = min(((pba << 10) * 9 / 10), |
|
674 ((pba << 10) - hw->max_frame_size)); |
|
675 |
|
676 hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
|
677 hw->fc_low_water = hw->fc_high_water - 8; |
|
678 hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
|
679 hw->fc_send_xon = 1; |
|
680 hw->fc = hw->original_fc; |
|
681 |
|
682 /* Allow time for pending master requests to run */ |
|
683 e1000_reset_hw(hw); |
|
684 if (hw->mac_type >= e1000_82544) |
|
685 ew32(WUC, 0); |
|
686 |
|
687 if (e1000_init_hw(hw)) |
|
688 e_dev_err("Hardware Error\n"); |
|
689 e1000_update_mng_vlan(adapter); |
|
690 |
|
691 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
692 if (hw->mac_type >= e1000_82544 && |
|
693 hw->autoneg == 1 && |
|
694 hw->autoneg_advertised == ADVERTISE_1000_FULL) { |
|
695 u32 ctrl = er32(CTRL); |
|
696 /* clear phy power management bit if we are in gig only mode, |
|
697 * which if enabled will attempt negotiation to 100Mb, which |
|
698 * can cause a loss of link at power off or driver unload */ |
|
699 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
700 ew32(CTRL, ctrl); |
|
701 } |
|
702 |
|
703 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
704 ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
|
705 |
|
706 e1000_reset_adaptive(hw); |
|
707 e1000_phy_get_info(hw, &adapter->phy_info); |
|
708 |
|
709 e1000_release_manageability(adapter); |
|
710 } |
|
711 |
|
712 /** |
|
713 * Dump the eeprom for users having checksum issues |
|
714 **/ |
|
715 static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
|
716 { |
|
717 struct net_device *netdev = adapter->netdev; |
|
718 struct ethtool_eeprom eeprom; |
|
719 const struct ethtool_ops *ops = netdev->ethtool_ops; |
|
720 u8 *data; |
|
721 int i; |
|
722 u16 csum_old, csum_new = 0; |
|
723 |
|
724 eeprom.len = ops->get_eeprom_len(netdev); |
|
725 eeprom.offset = 0; |
|
726 |
|
727 data = kmalloc(eeprom.len, GFP_KERNEL); |
|
728 if (!data) { |
|
729 pr_err("Unable to allocate memory to dump EEPROM data\n"); |
|
730 return; |
|
731 } |
|
732 |
|
733 ops->get_eeprom(netdev, &eeprom, data); |
|
734 |
|
735 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + |
|
736 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); |
|
737 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) |
|
738 csum_new += data[i] + (data[i + 1] << 8); |
|
739 csum_new = EEPROM_SUM - csum_new; |
|
740 |
|
741 pr_err("/*********************/\n"); |
|
742 pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old); |
|
743 pr_err("Calculated : 0x%04x\n", csum_new); |
|
744 |
|
745 pr_err("Offset Values\n"); |
|
746 pr_err("======== ======\n"); |
|
747 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
|
748 |
|
749 pr_err("Include this output when contacting your support provider.\n"); |
|
750 pr_err("This is not a software error! Something bad happened to\n"); |
|
751 pr_err("your hardware or EEPROM image. Ignoring this problem could\n"); |
|
752 pr_err("result in further problems, possibly loss of data,\n"); |
|
753 pr_err("corruption or system hangs!\n"); |
|
754 pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n"); |
|
755 pr_err("which is invalid and requires you to set the proper MAC\n"); |
|
756 pr_err("address manually before continuing to enable this network\n"); |
|
757 pr_err("device. Please inspect the EEPROM dump and report the\n"); |
|
758 pr_err("issue to your hardware vendor or Intel Customer Support.\n"); |
|
759 pr_err("/*********************/\n"); |
|
760 |
|
761 kfree(data); |
|
762 } |
|
763 |
|
764 /** |
|
765 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not |
|
766 * @pdev: PCI device information struct |
|
767 * |
|
768 * Return true if an adapter needs ioport resources |
|
769 **/ |
|
770 static int e1000_is_need_ioport(struct pci_dev *pdev) |
|
771 { |
|
772 switch (pdev->device) { |
|
773 case E1000_DEV_ID_82540EM: |
|
774 case E1000_DEV_ID_82540EM_LOM: |
|
775 case E1000_DEV_ID_82540EP: |
|
776 case E1000_DEV_ID_82540EP_LOM: |
|
777 case E1000_DEV_ID_82540EP_LP: |
|
778 case E1000_DEV_ID_82541EI: |
|
779 case E1000_DEV_ID_82541EI_MOBILE: |
|
780 case E1000_DEV_ID_82541ER: |
|
781 case E1000_DEV_ID_82541ER_LOM: |
|
782 case E1000_DEV_ID_82541GI: |
|
783 case E1000_DEV_ID_82541GI_LF: |
|
784 case E1000_DEV_ID_82541GI_MOBILE: |
|
785 case E1000_DEV_ID_82544EI_COPPER: |
|
786 case E1000_DEV_ID_82544EI_FIBER: |
|
787 case E1000_DEV_ID_82544GC_COPPER: |
|
788 case E1000_DEV_ID_82544GC_LOM: |
|
789 case E1000_DEV_ID_82545EM_COPPER: |
|
790 case E1000_DEV_ID_82545EM_FIBER: |
|
791 case E1000_DEV_ID_82546EB_COPPER: |
|
792 case E1000_DEV_ID_82546EB_FIBER: |
|
793 case E1000_DEV_ID_82546EB_QUAD_COPPER: |
|
794 return true; |
|
795 default: |
|
796 return false; |
|
797 } |
|
798 } |
|
799 |
|
800 static const struct net_device_ops e1000_netdev_ops = { |
|
801 .ndo_open = e1000_open, |
|
802 .ndo_stop = e1000_close, |
|
803 .ndo_start_xmit = e1000_xmit_frame, |
|
804 .ndo_get_stats = e1000_get_stats, |
|
805 .ndo_set_rx_mode = e1000_set_rx_mode, |
|
806 .ndo_set_mac_address = e1000_set_mac, |
|
807 .ndo_tx_timeout = e1000_tx_timeout, |
|
808 .ndo_change_mtu = e1000_change_mtu, |
|
809 .ndo_do_ioctl = e1000_ioctl, |
|
810 .ndo_validate_addr = eth_validate_addr, |
|
811 |
|
812 .ndo_vlan_rx_register = e1000_vlan_rx_register, |
|
813 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
814 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
815 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
816 .ndo_poll_controller = e1000_netpoll, |
|
817 #endif |
|
818 }; |
|
819 |
|
820 /** |
|
821 * e1000_init_hw_struct - initialize members of hw struct |
|
822 * @adapter: board private struct |
|
823 * @hw: structure used by e1000_hw.c |
|
824 * |
|
825 * Factors out initialization of the e1000_hw struct to its own function |
|
826 * that can be called very early at init (just after struct allocation). |
|
827 * Fields are initialized based on PCI device information and |
|
828 * OS network device settings (MTU size). |
|
829 * Returns negative error codes if MAC type setup fails. |
|
830 */ |
|
831 static int e1000_init_hw_struct(struct e1000_adapter *adapter, |
|
832 struct e1000_hw *hw) |
|
833 { |
|
834 struct pci_dev *pdev = adapter->pdev; |
|
835 |
|
836 /* PCI config space info */ |
|
837 hw->vendor_id = pdev->vendor; |
|
838 hw->device_id = pdev->device; |
|
839 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
840 hw->subsystem_id = pdev->subsystem_device; |
|
841 hw->revision_id = pdev->revision; |
|
842 |
|
843 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
844 |
|
845 hw->max_frame_size = adapter->netdev->mtu + |
|
846 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
847 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
848 |
|
849 /* identify the MAC */ |
|
850 if (e1000_set_mac_type(hw)) { |
|
851 e_err(probe, "Unknown MAC Type\n"); |
|
852 return -EIO; |
|
853 } |
|
854 |
|
855 switch (hw->mac_type) { |
|
856 default: |
|
857 break; |
|
858 case e1000_82541: |
|
859 case e1000_82547: |
|
860 case e1000_82541_rev_2: |
|
861 case e1000_82547_rev_2: |
|
862 hw->phy_init_script = 1; |
|
863 break; |
|
864 } |
|
865 |
|
866 e1000_set_media_type(hw); |
|
867 e1000_get_bus_info(hw); |
|
868 |
|
869 hw->wait_autoneg_complete = false; |
|
870 hw->tbi_compatibility_en = true; |
|
871 hw->adaptive_ifs = true; |
|
872 |
|
873 /* Copper options */ |
|
874 |
|
875 if (hw->media_type == e1000_media_type_copper) { |
|
876 hw->mdix = AUTO_ALL_MODES; |
|
877 hw->disable_polarity_correction = false; |
|
878 hw->master_slave = E1000_MASTER_SLAVE; |
|
879 } |
|
880 |
|
881 return 0; |
|
882 } |
|
883 |
|
884 /** |
|
885 * e1000_probe - Device Initialization Routine |
|
886 * @pdev: PCI device information struct |
|
887 * @ent: entry in e1000_pci_tbl |
|
888 * |
|
889 * Returns 0 on success, negative on failure |
|
890 * |
|
891 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
892 * The OS initialization, configuring of the adapter private structure, |
|
893 * and a hardware reset occur. |
|
894 **/ |
|
895 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
896 const struct pci_device_id *ent) |
|
897 { |
|
898 struct net_device *netdev; |
|
899 struct e1000_adapter *adapter; |
|
900 struct e1000_hw *hw; |
|
901 |
|
902 static int cards_found = 0; |
|
903 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
904 int i, err, pci_using_dac; |
|
905 u16 eeprom_data = 0; |
|
906 u16 tmp = 0; |
|
907 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
908 int bars, need_ioport; |
|
909 |
|
910 /* do not allocate ioport bars when not needed */ |
|
911 need_ioport = e1000_is_need_ioport(pdev); |
|
912 if (need_ioport) { |
|
913 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); |
|
914 err = pci_enable_device(pdev); |
|
915 } else { |
|
916 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
917 err = pci_enable_device_mem(pdev); |
|
918 } |
|
919 if (err) |
|
920 return err; |
|
921 |
|
922 err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
|
923 if (err) |
|
924 goto err_pci_reg; |
|
925 |
|
926 pci_set_master(pdev); |
|
927 err = pci_save_state(pdev); |
|
928 if (err) |
|
929 goto err_alloc_etherdev; |
|
930 |
|
931 err = -ENOMEM; |
|
932 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
933 if (!netdev) |
|
934 goto err_alloc_etherdev; |
|
935 |
|
936 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
937 |
|
938 pci_set_drvdata(pdev, netdev); |
|
939 adapter = netdev_priv(netdev); |
|
940 adapter->netdev = netdev; |
|
941 adapter->pdev = pdev; |
|
942 adapter->msg_enable = (1 << debug) - 1; |
|
943 adapter->bars = bars; |
|
944 adapter->need_ioport = need_ioport; |
|
945 |
|
946 hw = &adapter->hw; |
|
947 hw->back = adapter; |
|
948 |
|
949 err = -EIO; |
|
950 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
|
951 if (!hw->hw_addr) |
|
952 goto err_ioremap; |
|
953 |
|
954 if (adapter->need_ioport) { |
|
955 for (i = BAR_1; i <= BAR_5; i++) { |
|
956 if (pci_resource_len(pdev, i) == 0) |
|
957 continue; |
|
958 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
959 hw->io_base = pci_resource_start(pdev, i); |
|
960 break; |
|
961 } |
|
962 } |
|
963 } |
|
964 |
|
965 /* make ready for any if (hw->...) below */ |
|
966 err = e1000_init_hw_struct(adapter, hw); |
|
967 if (err) |
|
968 goto err_sw_init; |
|
969 |
|
970 /* |
|
971 * there is a workaround being applied below that limits |
|
972 * 64-bit DMA addresses to 64-bit hardware. There are some |
|
973 * 32-bit adapters that Tx hang when given 64-bit DMA addresses |
|
974 */ |
|
975 pci_using_dac = 0; |
|
976 if ((hw->bus_type == e1000_bus_type_pcix) && |
|
977 !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { |
|
978 /* |
|
979 * according to DMA-API-HOWTO, coherent calls will always |
|
980 * succeed if the set call did |
|
981 */ |
|
982 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
983 pci_using_dac = 1; |
|
984 } else { |
|
985 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
986 if (err) { |
|
987 pr_err("No usable DMA config, aborting\n"); |
|
988 goto err_dma; |
|
989 } |
|
990 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
991 } |
|
992 |
|
993 netdev->netdev_ops = &e1000_netdev_ops; |
|
994 e1000_set_ethtool_ops(netdev); |
|
995 netdev->watchdog_timeo = 5 * HZ; |
|
996 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
997 |
|
998 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
999 |
|
1000 adapter->bd_number = cards_found; |
|
1001 |
|
1002 /* setup the private structure */ |
|
1003 |
|
1004 err = e1000_sw_init(adapter); |
|
1005 if (err) |
|
1006 goto err_sw_init; |
|
1007 |
|
1008 err = -EIO; |
|
1009 if (hw->mac_type == e1000_ce4100) { |
|
1010 ce4100_gbe_mdio_base_phy = pci_resource_start(pdev, BAR_1); |
|
1011 ce4100_gbe_mdio_base_virt = ioremap(ce4100_gbe_mdio_base_phy, |
|
1012 pci_resource_len(pdev, BAR_1)); |
|
1013 |
|
1014 if (!ce4100_gbe_mdio_base_virt) |
|
1015 goto err_mdio_ioremap; |
|
1016 } |
|
1017 |
|
1018 if (hw->mac_type >= e1000_82543) { |
|
1019 netdev->features = NETIF_F_SG | |
|
1020 NETIF_F_HW_CSUM | |
|
1021 NETIF_F_HW_VLAN_TX | |
|
1022 NETIF_F_HW_VLAN_RX | |
|
1023 NETIF_F_HW_VLAN_FILTER; |
|
1024 } |
|
1025 |
|
1026 if ((hw->mac_type >= e1000_82544) && |
|
1027 (hw->mac_type != e1000_82547)) |
|
1028 netdev->features |= NETIF_F_TSO; |
|
1029 |
|
1030 if (pci_using_dac) { |
|
1031 netdev->features |= NETIF_F_HIGHDMA; |
|
1032 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
1033 } |
|
1034 |
|
1035 netdev->vlan_features |= NETIF_F_TSO; |
|
1036 netdev->vlan_features |= NETIF_F_HW_CSUM; |
|
1037 netdev->vlan_features |= NETIF_F_SG; |
|
1038 |
|
1039 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
|
1040 |
|
1041 /* initialize eeprom parameters */ |
|
1042 if (e1000_init_eeprom_params(hw)) { |
|
1043 e_err(probe, "EEPROM initialization failed\n"); |
|
1044 goto err_eeprom; |
|
1045 } |
|
1046 |
|
1047 /* before reading the EEPROM, reset the controller to |
|
1048 * put the device in a known good starting state */ |
|
1049 |
|
1050 e1000_reset_hw(hw); |
|
1051 |
|
1052 /* make sure the EEPROM is good */ |
|
1053 if (e1000_validate_eeprom_checksum(hw) < 0) { |
|
1054 e_err(probe, "The EEPROM Checksum Is Not Valid\n"); |
|
1055 e1000_dump_eeprom(adapter); |
|
1056 /* |
|
1057 * set MAC address to all zeroes to invalidate and temporary |
|
1058 * disable this device for the user. This blocks regular |
|
1059 * traffic while still permitting ethtool ioctls from reaching |
|
1060 * the hardware as well as allowing the user to run the |
|
1061 * interface after manually setting a hw addr using |
|
1062 * `ip set address` |
|
1063 */ |
|
1064 memset(hw->mac_addr, 0, netdev->addr_len); |
|
1065 } else { |
|
1066 /* copy the MAC address out of the EEPROM */ |
|
1067 if (e1000_read_mac_addr(hw)) |
|
1068 e_err(probe, "EEPROM Read Error\n"); |
|
1069 } |
|
1070 /* don't block initalization here due to bad MAC address */ |
|
1071 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
|
1072 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); |
|
1073 |
|
1074 if (!is_valid_ether_addr(netdev->perm_addr)) |
|
1075 e_err(probe, "Invalid MAC Address\n"); |
|
1076 |
|
1077 init_timer(&adapter->tx_fifo_stall_timer); |
|
1078 adapter->tx_fifo_stall_timer.function = e1000_82547_tx_fifo_stall; |
|
1079 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
|
1080 |
|
1081 init_timer(&adapter->watchdog_timer); |
|
1082 adapter->watchdog_timer.function = e1000_watchdog; |
|
1083 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
1084 |
|
1085 init_timer(&adapter->phy_info_timer); |
|
1086 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
1087 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
1088 |
|
1089 INIT_WORK(&adapter->fifo_stall_task, e1000_82547_tx_fifo_stall_task); |
|
1090 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
1091 INIT_WORK(&adapter->phy_info_task, e1000_update_phy_info_task); |
|
1092 |
|
1093 e1000_check_options(adapter); |
|
1094 |
|
1095 /* Initial Wake on LAN setting |
|
1096 * If APM wake is enabled in the EEPROM, |
|
1097 * enable the ACPI Magic Packet filter |
|
1098 */ |
|
1099 |
|
1100 switch (hw->mac_type) { |
|
1101 case e1000_82542_rev2_0: |
|
1102 case e1000_82542_rev2_1: |
|
1103 case e1000_82543: |
|
1104 break; |
|
1105 case e1000_82544: |
|
1106 e1000_read_eeprom(hw, |
|
1107 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
1108 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
1109 break; |
|
1110 case e1000_82546: |
|
1111 case e1000_82546_rev_3: |
|
1112 if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
|
1113 e1000_read_eeprom(hw, |
|
1114 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
1115 break; |
|
1116 } |
|
1117 /* Fall Through */ |
|
1118 default: |
|
1119 e1000_read_eeprom(hw, |
|
1120 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1121 break; |
|
1122 } |
|
1123 if (eeprom_data & eeprom_apme_mask) |
|
1124 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1125 |
|
1126 /* now that we have the eeprom settings, apply the special cases |
|
1127 * where the eeprom may be wrong or the board simply won't support |
|
1128 * wake on lan on a particular port */ |
|
1129 switch (pdev->device) { |
|
1130 case E1000_DEV_ID_82546GB_PCIE: |
|
1131 adapter->eeprom_wol = 0; |
|
1132 break; |
|
1133 case E1000_DEV_ID_82546EB_FIBER: |
|
1134 case E1000_DEV_ID_82546GB_FIBER: |
|
1135 /* Wake events only supported on port A for dual fiber |
|
1136 * regardless of eeprom setting */ |
|
1137 if (er32(STATUS) & E1000_STATUS_FUNC_1) |
|
1138 adapter->eeprom_wol = 0; |
|
1139 break; |
|
1140 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1141 /* if quad port adapter, disable WoL on all but port A */ |
|
1142 if (global_quad_port_a != 0) |
|
1143 adapter->eeprom_wol = 0; |
|
1144 else |
|
1145 adapter->quad_port_a = 1; |
|
1146 /* Reset for multiple quad port adapters */ |
|
1147 if (++global_quad_port_a == 4) |
|
1148 global_quad_port_a = 0; |
|
1149 break; |
|
1150 } |
|
1151 |
|
1152 /* initialize the wol settings based on the eeprom settings */ |
|
1153 adapter->wol = adapter->eeprom_wol; |
|
1154 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
1155 |
|
1156 /* Auto detect PHY address */ |
|
1157 if (hw->mac_type == e1000_ce4100) { |
|
1158 for (i = 0; i < 32; i++) { |
|
1159 hw->phy_addr = i; |
|
1160 e1000_read_phy_reg(hw, PHY_ID2, &tmp); |
|
1161 if (tmp == 0 || tmp == 0xFF) { |
|
1162 if (i == 31) |
|
1163 goto err_eeprom; |
|
1164 continue; |
|
1165 } else |
|
1166 break; |
|
1167 } |
|
1168 } |
|
1169 |
|
1170 /* reset the hardware with the new settings */ |
|
1171 e1000_reset(adapter); |
|
1172 |
|
1173 strcpy(netdev->name, "eth%d"); |
|
1174 err = register_netdev(netdev); |
|
1175 if (err) |
|
1176 goto err_register; |
|
1177 |
|
1178 /* print bus type/speed/width info */ |
|
1179 e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n", |
|
1180 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
|
1181 ((hw->bus_speed == e1000_bus_speed_133) ? 133 : |
|
1182 (hw->bus_speed == e1000_bus_speed_120) ? 120 : |
|
1183 (hw->bus_speed == e1000_bus_speed_100) ? 100 : |
|
1184 (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33), |
|
1185 ((hw->bus_width == e1000_bus_width_64) ? 64 : 32), |
|
1186 netdev->dev_addr); |
|
1187 |
|
1188 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
1189 netif_carrier_off(netdev); |
|
1190 |
|
1191 e_info(probe, "Intel(R) PRO/1000 Network Connection\n"); |
|
1192 |
|
1193 cards_found++; |
|
1194 return 0; |
|
1195 |
|
1196 err_register: |
|
1197 err_eeprom: |
|
1198 e1000_phy_hw_reset(hw); |
|
1199 |
|
1200 if (hw->flash_address) |
|
1201 iounmap(hw->flash_address); |
|
1202 kfree(adapter->tx_ring); |
|
1203 kfree(adapter->rx_ring); |
|
1204 err_dma: |
|
1205 err_sw_init: |
|
1206 err_mdio_ioremap: |
|
1207 iounmap(ce4100_gbe_mdio_base_virt); |
|
1208 iounmap(hw->hw_addr); |
|
1209 err_ioremap: |
|
1210 free_netdev(netdev); |
|
1211 err_alloc_etherdev: |
|
1212 pci_release_selected_regions(pdev, bars); |
|
1213 err_pci_reg: |
|
1214 pci_disable_device(pdev); |
|
1215 return err; |
|
1216 } |
|
1217 |
|
1218 /** |
|
1219 * e1000_remove - Device Removal Routine |
|
1220 * @pdev: PCI device information struct |
|
1221 * |
|
1222 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1223 * that it should release a PCI device. The could be caused by a |
|
1224 * Hot-Plug event, or because the driver is going to be removed from |
|
1225 * memory. |
|
1226 **/ |
|
1227 |
|
1228 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
1229 { |
|
1230 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1231 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1232 struct e1000_hw *hw = &adapter->hw; |
|
1233 |
|
1234 set_bit(__E1000_DOWN, &adapter->flags); |
|
1235 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
1236 del_timer_sync(&adapter->watchdog_timer); |
|
1237 del_timer_sync(&adapter->phy_info_timer); |
|
1238 |
|
1239 cancel_work_sync(&adapter->reset_task); |
|
1240 |
|
1241 e1000_release_manageability(adapter); |
|
1242 |
|
1243 unregister_netdev(netdev); |
|
1244 |
|
1245 e1000_phy_hw_reset(hw); |
|
1246 |
|
1247 kfree(adapter->tx_ring); |
|
1248 kfree(adapter->rx_ring); |
|
1249 |
|
1250 iounmap(hw->hw_addr); |
|
1251 if (hw->flash_address) |
|
1252 iounmap(hw->flash_address); |
|
1253 pci_release_selected_regions(pdev, adapter->bars); |
|
1254 |
|
1255 free_netdev(netdev); |
|
1256 |
|
1257 pci_disable_device(pdev); |
|
1258 } |
|
1259 |
|
1260 /** |
|
1261 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1262 * @adapter: board private structure to initialize |
|
1263 * |
|
1264 * e1000_sw_init initializes the Adapter private data structure. |
|
1265 * e1000_init_hw_struct MUST be called before this function |
|
1266 **/ |
|
1267 |
|
1268 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
1269 { |
|
1270 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1271 |
|
1272 adapter->num_tx_queues = 1; |
|
1273 adapter->num_rx_queues = 1; |
|
1274 |
|
1275 if (e1000_alloc_queues(adapter)) { |
|
1276 e_err(probe, "Unable to allocate memory for queues\n"); |
|
1277 return -ENOMEM; |
|
1278 } |
|
1279 |
|
1280 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1281 e1000_irq_disable(adapter); |
|
1282 |
|
1283 spin_lock_init(&adapter->stats_lock); |
|
1284 |
|
1285 set_bit(__E1000_DOWN, &adapter->flags); |
|
1286 |
|
1287 return 0; |
|
1288 } |
|
1289 |
|
1290 /** |
|
1291 * e1000_alloc_queues - Allocate memory for all rings |
|
1292 * @adapter: board private structure to initialize |
|
1293 * |
|
1294 * We allocate one ring per queue at run-time since we don't know the |
|
1295 * number of queues at compile-time. |
|
1296 **/ |
|
1297 |
|
1298 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1299 { |
|
1300 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1301 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1302 if (!adapter->tx_ring) |
|
1303 return -ENOMEM; |
|
1304 |
|
1305 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1306 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1307 if (!adapter->rx_ring) { |
|
1308 kfree(adapter->tx_ring); |
|
1309 return -ENOMEM; |
|
1310 } |
|
1311 |
|
1312 return E1000_SUCCESS; |
|
1313 } |
|
1314 |
|
1315 /** |
|
1316 * e1000_open - Called when a network interface is made active |
|
1317 * @netdev: network interface device structure |
|
1318 * |
|
1319 * Returns 0 on success, negative value on failure |
|
1320 * |
|
1321 * The open entry point is called when a network interface is made |
|
1322 * active by the system (IFF_UP). At this point all resources needed |
|
1323 * for transmit and receive operations are allocated, the interrupt |
|
1324 * handler is registered with the OS, the watchdog timer is started, |
|
1325 * and the stack is notified that the interface is ready. |
|
1326 **/ |
|
1327 |
|
1328 static int e1000_open(struct net_device *netdev) |
|
1329 { |
|
1330 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1331 struct e1000_hw *hw = &adapter->hw; |
|
1332 int err; |
|
1333 |
|
1334 /* disallow open during test */ |
|
1335 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1336 return -EBUSY; |
|
1337 |
|
1338 netif_carrier_off(netdev); |
|
1339 |
|
1340 /* allocate transmit descriptors */ |
|
1341 err = e1000_setup_all_tx_resources(adapter); |
|
1342 if (err) |
|
1343 goto err_setup_tx; |
|
1344 |
|
1345 /* allocate receive descriptors */ |
|
1346 err = e1000_setup_all_rx_resources(adapter); |
|
1347 if (err) |
|
1348 goto err_setup_rx; |
|
1349 |
|
1350 e1000_power_up_phy(adapter); |
|
1351 |
|
1352 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1353 if ((hw->mng_cookie.status & |
|
1354 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1355 e1000_update_mng_vlan(adapter); |
|
1356 } |
|
1357 |
|
1358 /* before we allocate an interrupt, we must be ready to handle it. |
|
1359 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1360 * as soon as we call pci_request_irq, so we have to setup our |
|
1361 * clean_rx handler before we do so. */ |
|
1362 e1000_configure(adapter); |
|
1363 |
|
1364 err = e1000_request_irq(adapter); |
|
1365 if (err) |
|
1366 goto err_req_irq; |
|
1367 |
|
1368 /* From here on the code is the same as e1000_up() */ |
|
1369 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1370 |
|
1371 napi_enable(&adapter->napi); |
|
1372 |
|
1373 e1000_irq_enable(adapter); |
|
1374 |
|
1375 netif_start_queue(netdev); |
|
1376 |
|
1377 /* fire a link status change interrupt to start the watchdog */ |
|
1378 ew32(ICS, E1000_ICS_LSC); |
|
1379 |
|
1380 return E1000_SUCCESS; |
|
1381 |
|
1382 err_req_irq: |
|
1383 e1000_power_down_phy(adapter); |
|
1384 e1000_free_all_rx_resources(adapter); |
|
1385 err_setup_rx: |
|
1386 e1000_free_all_tx_resources(adapter); |
|
1387 err_setup_tx: |
|
1388 e1000_reset(adapter); |
|
1389 |
|
1390 return err; |
|
1391 } |
|
1392 |
|
1393 /** |
|
1394 * e1000_close - Disables a network interface |
|
1395 * @netdev: network interface device structure |
|
1396 * |
|
1397 * Returns 0, this is not allowed to fail |
|
1398 * |
|
1399 * The close entry point is called when an interface is de-activated |
|
1400 * by the OS. The hardware is still under the drivers control, but |
|
1401 * needs to be disabled. A global MAC reset is issued to stop the |
|
1402 * hardware, and all transmit and receive resources are freed. |
|
1403 **/ |
|
1404 |
|
1405 static int e1000_close(struct net_device *netdev) |
|
1406 { |
|
1407 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1408 struct e1000_hw *hw = &adapter->hw; |
|
1409 |
|
1410 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1411 e1000_down(adapter); |
|
1412 e1000_power_down_phy(adapter); |
|
1413 e1000_free_irq(adapter); |
|
1414 |
|
1415 e1000_free_all_tx_resources(adapter); |
|
1416 e1000_free_all_rx_resources(adapter); |
|
1417 |
|
1418 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1419 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1420 if ((hw->mng_cookie.status & |
|
1421 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1422 !(adapter->vlgrp && |
|
1423 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1424 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1425 } |
|
1426 |
|
1427 return 0; |
|
1428 } |
|
1429 |
|
1430 /** |
|
1431 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1432 * @adapter: address of board private structure |
|
1433 * @start: address of beginning of memory |
|
1434 * @len: length of memory |
|
1435 **/ |
|
1436 static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
|
1437 unsigned long len) |
|
1438 { |
|
1439 struct e1000_hw *hw = &adapter->hw; |
|
1440 unsigned long begin = (unsigned long)start; |
|
1441 unsigned long end = begin + len; |
|
1442 |
|
1443 /* First rev 82545 and 82546 need to not allow any memory |
|
1444 * write location to cross 64k boundary due to errata 23 */ |
|
1445 if (hw->mac_type == e1000_82545 || |
|
1446 hw->mac_type == e1000_ce4100 || |
|
1447 hw->mac_type == e1000_82546) { |
|
1448 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
|
1449 } |
|
1450 |
|
1451 return true; |
|
1452 } |
|
1453 |
|
1454 /** |
|
1455 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1456 * @adapter: board private structure |
|
1457 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1458 * |
|
1459 * Return 0 on success, negative on failure |
|
1460 **/ |
|
1461 |
|
1462 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1463 struct e1000_tx_ring *txdr) |
|
1464 { |
|
1465 struct pci_dev *pdev = adapter->pdev; |
|
1466 int size; |
|
1467 |
|
1468 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1469 txdr->buffer_info = vzalloc(size); |
|
1470 if (!txdr->buffer_info) { |
|
1471 e_err(probe, "Unable to allocate memory for the Tx descriptor " |
|
1472 "ring\n"); |
|
1473 return -ENOMEM; |
|
1474 } |
|
1475 |
|
1476 /* round up to nearest 4K */ |
|
1477 |
|
1478 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1479 txdr->size = ALIGN(txdr->size, 4096); |
|
1480 |
|
1481 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma, |
|
1482 GFP_KERNEL); |
|
1483 if (!txdr->desc) { |
|
1484 setup_tx_desc_die: |
|
1485 vfree(txdr->buffer_info); |
|
1486 e_err(probe, "Unable to allocate memory for the Tx descriptor " |
|
1487 "ring\n"); |
|
1488 return -ENOMEM; |
|
1489 } |
|
1490 |
|
1491 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1492 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1493 void *olddesc = txdr->desc; |
|
1494 dma_addr_t olddma = txdr->dma; |
|
1495 e_err(tx_err, "txdr align check failed: %u bytes at %p\n", |
|
1496 txdr->size, txdr->desc); |
|
1497 /* Try again, without freeing the previous */ |
|
1498 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, |
|
1499 &txdr->dma, GFP_KERNEL); |
|
1500 /* Failed allocation, critical failure */ |
|
1501 if (!txdr->desc) { |
|
1502 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1503 olddma); |
|
1504 goto setup_tx_desc_die; |
|
1505 } |
|
1506 |
|
1507 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1508 /* give up */ |
|
1509 dma_free_coherent(&pdev->dev, txdr->size, txdr->desc, |
|
1510 txdr->dma); |
|
1511 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1512 olddma); |
|
1513 e_err(probe, "Unable to allocate aligned memory " |
|
1514 "for the transmit descriptor ring\n"); |
|
1515 vfree(txdr->buffer_info); |
|
1516 return -ENOMEM; |
|
1517 } else { |
|
1518 /* Free old allocation, new allocation was successful */ |
|
1519 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1520 olddma); |
|
1521 } |
|
1522 } |
|
1523 memset(txdr->desc, 0, txdr->size); |
|
1524 |
|
1525 txdr->next_to_use = 0; |
|
1526 txdr->next_to_clean = 0; |
|
1527 |
|
1528 return 0; |
|
1529 } |
|
1530 |
|
1531 /** |
|
1532 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1533 * (Descriptors) for all queues |
|
1534 * @adapter: board private structure |
|
1535 * |
|
1536 * Return 0 on success, negative on failure |
|
1537 **/ |
|
1538 |
|
1539 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1540 { |
|
1541 int i, err = 0; |
|
1542 |
|
1543 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1544 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1545 if (err) { |
|
1546 e_err(probe, "Allocation for Tx Queue %u failed\n", i); |
|
1547 for (i-- ; i >= 0; i--) |
|
1548 e1000_free_tx_resources(adapter, |
|
1549 &adapter->tx_ring[i]); |
|
1550 break; |
|
1551 } |
|
1552 } |
|
1553 |
|
1554 return err; |
|
1555 } |
|
1556 |
|
1557 /** |
|
1558 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1559 * @adapter: board private structure |
|
1560 * |
|
1561 * Configure the Tx unit of the MAC after a reset. |
|
1562 **/ |
|
1563 |
|
1564 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
1565 { |
|
1566 u64 tdba; |
|
1567 struct e1000_hw *hw = &adapter->hw; |
|
1568 u32 tdlen, tctl, tipg; |
|
1569 u32 ipgr1, ipgr2; |
|
1570 |
|
1571 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1572 |
|
1573 switch (adapter->num_tx_queues) { |
|
1574 case 1: |
|
1575 default: |
|
1576 tdba = adapter->tx_ring[0].dma; |
|
1577 tdlen = adapter->tx_ring[0].count * |
|
1578 sizeof(struct e1000_tx_desc); |
|
1579 ew32(TDLEN, tdlen); |
|
1580 ew32(TDBAH, (tdba >> 32)); |
|
1581 ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1582 ew32(TDT, 0); |
|
1583 ew32(TDH, 0); |
|
1584 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1585 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1586 break; |
|
1587 } |
|
1588 |
|
1589 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1590 if ((hw->media_type == e1000_media_type_fiber || |
|
1591 hw->media_type == e1000_media_type_internal_serdes)) |
|
1592 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1593 else |
|
1594 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1595 |
|
1596 switch (hw->mac_type) { |
|
1597 case e1000_82542_rev2_0: |
|
1598 case e1000_82542_rev2_1: |
|
1599 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1600 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1601 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1602 break; |
|
1603 default: |
|
1604 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1605 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1606 break; |
|
1607 } |
|
1608 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1609 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1610 ew32(TIPG, tipg); |
|
1611 |
|
1612 /* Set the Tx Interrupt Delay register */ |
|
1613 |
|
1614 ew32(TIDV, adapter->tx_int_delay); |
|
1615 if (hw->mac_type >= e1000_82540) |
|
1616 ew32(TADV, adapter->tx_abs_int_delay); |
|
1617 |
|
1618 /* Program the Transmit Control Register */ |
|
1619 |
|
1620 tctl = er32(TCTL); |
|
1621 tctl &= ~E1000_TCTL_CT; |
|
1622 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1623 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1624 |
|
1625 e1000_config_collision_dist(hw); |
|
1626 |
|
1627 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1628 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1629 |
|
1630 /* only set IDE if we are delaying interrupts using the timers */ |
|
1631 if (adapter->tx_int_delay) |
|
1632 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1633 |
|
1634 if (hw->mac_type < e1000_82543) |
|
1635 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1636 else |
|
1637 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1638 |
|
1639 /* Cache if we're 82544 running in PCI-X because we'll |
|
1640 * need this to apply a workaround later in the send path. */ |
|
1641 if (hw->mac_type == e1000_82544 && |
|
1642 hw->bus_type == e1000_bus_type_pcix) |
|
1643 adapter->pcix_82544 = 1; |
|
1644 |
|
1645 ew32(TCTL, tctl); |
|
1646 |
|
1647 } |
|
1648 |
|
1649 /** |
|
1650 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1651 * @adapter: board private structure |
|
1652 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1653 * |
|
1654 * Returns 0 on success, negative on failure |
|
1655 **/ |
|
1656 |
|
1657 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1658 struct e1000_rx_ring *rxdr) |
|
1659 { |
|
1660 struct pci_dev *pdev = adapter->pdev; |
|
1661 int size, desc_len; |
|
1662 |
|
1663 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1664 rxdr->buffer_info = vzalloc(size); |
|
1665 if (!rxdr->buffer_info) { |
|
1666 e_err(probe, "Unable to allocate memory for the Rx descriptor " |
|
1667 "ring\n"); |
|
1668 return -ENOMEM; |
|
1669 } |
|
1670 |
|
1671 desc_len = sizeof(struct e1000_rx_desc); |
|
1672 |
|
1673 /* Round up to nearest 4K */ |
|
1674 |
|
1675 rxdr->size = rxdr->count * desc_len; |
|
1676 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1677 |
|
1678 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, |
|
1679 GFP_KERNEL); |
|
1680 |
|
1681 if (!rxdr->desc) { |
|
1682 e_err(probe, "Unable to allocate memory for the Rx descriptor " |
|
1683 "ring\n"); |
|
1684 setup_rx_desc_die: |
|
1685 vfree(rxdr->buffer_info); |
|
1686 return -ENOMEM; |
|
1687 } |
|
1688 |
|
1689 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1690 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1691 void *olddesc = rxdr->desc; |
|
1692 dma_addr_t olddma = rxdr->dma; |
|
1693 e_err(rx_err, "rxdr align check failed: %u bytes at %p\n", |
|
1694 rxdr->size, rxdr->desc); |
|
1695 /* Try again, without freeing the previous */ |
|
1696 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, |
|
1697 &rxdr->dma, GFP_KERNEL); |
|
1698 /* Failed allocation, critical failure */ |
|
1699 if (!rxdr->desc) { |
|
1700 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1701 olddma); |
|
1702 e_err(probe, "Unable to allocate memory for the Rx " |
|
1703 "descriptor ring\n"); |
|
1704 goto setup_rx_desc_die; |
|
1705 } |
|
1706 |
|
1707 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1708 /* give up */ |
|
1709 dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc, |
|
1710 rxdr->dma); |
|
1711 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1712 olddma); |
|
1713 e_err(probe, "Unable to allocate aligned memory for " |
|
1714 "the Rx descriptor ring\n"); |
|
1715 goto setup_rx_desc_die; |
|
1716 } else { |
|
1717 /* Free old allocation, new allocation was successful */ |
|
1718 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1719 olddma); |
|
1720 } |
|
1721 } |
|
1722 memset(rxdr->desc, 0, rxdr->size); |
|
1723 |
|
1724 rxdr->next_to_clean = 0; |
|
1725 rxdr->next_to_use = 0; |
|
1726 rxdr->rx_skb_top = NULL; |
|
1727 |
|
1728 return 0; |
|
1729 } |
|
1730 |
|
1731 /** |
|
1732 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1733 * (Descriptors) for all queues |
|
1734 * @adapter: board private structure |
|
1735 * |
|
1736 * Return 0 on success, negative on failure |
|
1737 **/ |
|
1738 |
|
1739 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1740 { |
|
1741 int i, err = 0; |
|
1742 |
|
1743 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1744 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1745 if (err) { |
|
1746 e_err(probe, "Allocation for Rx Queue %u failed\n", i); |
|
1747 for (i-- ; i >= 0; i--) |
|
1748 e1000_free_rx_resources(adapter, |
|
1749 &adapter->rx_ring[i]); |
|
1750 break; |
|
1751 } |
|
1752 } |
|
1753 |
|
1754 return err; |
|
1755 } |
|
1756 |
|
1757 /** |
|
1758 * e1000_setup_rctl - configure the receive control registers |
|
1759 * @adapter: Board private structure |
|
1760 **/ |
|
1761 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1762 { |
|
1763 struct e1000_hw *hw = &adapter->hw; |
|
1764 u32 rctl; |
|
1765 |
|
1766 rctl = er32(RCTL); |
|
1767 |
|
1768 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1769 |
|
1770 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1771 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1772 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1773 |
|
1774 if (hw->tbi_compatibility_on == 1) |
|
1775 rctl |= E1000_RCTL_SBP; |
|
1776 else |
|
1777 rctl &= ~E1000_RCTL_SBP; |
|
1778 |
|
1779 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1780 rctl &= ~E1000_RCTL_LPE; |
|
1781 else |
|
1782 rctl |= E1000_RCTL_LPE; |
|
1783 |
|
1784 /* Setup buffer sizes */ |
|
1785 rctl &= ~E1000_RCTL_SZ_4096; |
|
1786 rctl |= E1000_RCTL_BSEX; |
|
1787 switch (adapter->rx_buffer_len) { |
|
1788 case E1000_RXBUFFER_2048: |
|
1789 default: |
|
1790 rctl |= E1000_RCTL_SZ_2048; |
|
1791 rctl &= ~E1000_RCTL_BSEX; |
|
1792 break; |
|
1793 case E1000_RXBUFFER_4096: |
|
1794 rctl |= E1000_RCTL_SZ_4096; |
|
1795 break; |
|
1796 case E1000_RXBUFFER_8192: |
|
1797 rctl |= E1000_RCTL_SZ_8192; |
|
1798 break; |
|
1799 case E1000_RXBUFFER_16384: |
|
1800 rctl |= E1000_RCTL_SZ_16384; |
|
1801 break; |
|
1802 } |
|
1803 |
|
1804 ew32(RCTL, rctl); |
|
1805 } |
|
1806 |
|
1807 /** |
|
1808 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
1809 * @adapter: board private structure |
|
1810 * |
|
1811 * Configure the Rx unit of the MAC after a reset. |
|
1812 **/ |
|
1813 |
|
1814 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
1815 { |
|
1816 u64 rdba; |
|
1817 struct e1000_hw *hw = &adapter->hw; |
|
1818 u32 rdlen, rctl, rxcsum; |
|
1819 |
|
1820 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
1821 rdlen = adapter->rx_ring[0].count * |
|
1822 sizeof(struct e1000_rx_desc); |
|
1823 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
1824 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
1825 } else { |
|
1826 rdlen = adapter->rx_ring[0].count * |
|
1827 sizeof(struct e1000_rx_desc); |
|
1828 adapter->clean_rx = e1000_clean_rx_irq; |
|
1829 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
1830 } |
|
1831 |
|
1832 /* disable receives while setting up the descriptors */ |
|
1833 rctl = er32(RCTL); |
|
1834 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1835 |
|
1836 /* set the Receive Delay Timer Register */ |
|
1837 ew32(RDTR, adapter->rx_int_delay); |
|
1838 |
|
1839 if (hw->mac_type >= e1000_82540) { |
|
1840 ew32(RADV, adapter->rx_abs_int_delay); |
|
1841 if (adapter->itr_setting != 0) |
|
1842 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
1843 } |
|
1844 |
|
1845 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
1846 * the Base and Length of the Rx Descriptor Ring */ |
|
1847 switch (adapter->num_rx_queues) { |
|
1848 case 1: |
|
1849 default: |
|
1850 rdba = adapter->rx_ring[0].dma; |
|
1851 ew32(RDLEN, rdlen); |
|
1852 ew32(RDBAH, (rdba >> 32)); |
|
1853 ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
1854 ew32(RDT, 0); |
|
1855 ew32(RDH, 0); |
|
1856 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
1857 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
1858 break; |
|
1859 } |
|
1860 |
|
1861 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
1862 if (hw->mac_type >= e1000_82543) { |
|
1863 rxcsum = er32(RXCSUM); |
|
1864 if (adapter->rx_csum) |
|
1865 rxcsum |= E1000_RXCSUM_TUOFL; |
|
1866 else |
|
1867 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
1868 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
1869 ew32(RXCSUM, rxcsum); |
|
1870 } |
|
1871 |
|
1872 /* Enable Receives */ |
|
1873 ew32(RCTL, rctl); |
|
1874 } |
|
1875 |
|
1876 /** |
|
1877 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
1878 * @adapter: board private structure |
|
1879 * @tx_ring: Tx descriptor ring for a specific queue |
|
1880 * |
|
1881 * Free all transmit software resources |
|
1882 **/ |
|
1883 |
|
1884 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
1885 struct e1000_tx_ring *tx_ring) |
|
1886 { |
|
1887 struct pci_dev *pdev = adapter->pdev; |
|
1888 |
|
1889 e1000_clean_tx_ring(adapter, tx_ring); |
|
1890 |
|
1891 vfree(tx_ring->buffer_info); |
|
1892 tx_ring->buffer_info = NULL; |
|
1893 |
|
1894 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
1895 tx_ring->dma); |
|
1896 |
|
1897 tx_ring->desc = NULL; |
|
1898 } |
|
1899 |
|
1900 /** |
|
1901 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
1902 * @adapter: board private structure |
|
1903 * |
|
1904 * Free all transmit software resources |
|
1905 **/ |
|
1906 |
|
1907 void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
1908 { |
|
1909 int i; |
|
1910 |
|
1911 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1912 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1913 } |
|
1914 |
|
1915 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
1916 struct e1000_buffer *buffer_info) |
|
1917 { |
|
1918 if (buffer_info->dma) { |
|
1919 if (buffer_info->mapped_as_page) |
|
1920 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1921 buffer_info->length, DMA_TO_DEVICE); |
|
1922 else |
|
1923 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1924 buffer_info->length, |
|
1925 DMA_TO_DEVICE); |
|
1926 buffer_info->dma = 0; |
|
1927 } |
|
1928 if (buffer_info->skb) { |
|
1929 dev_kfree_skb_any(buffer_info->skb); |
|
1930 buffer_info->skb = NULL; |
|
1931 } |
|
1932 buffer_info->time_stamp = 0; |
|
1933 /* buffer_info must be completely set up in the transmit path */ |
|
1934 } |
|
1935 |
|
1936 /** |
|
1937 * e1000_clean_tx_ring - Free Tx Buffers |
|
1938 * @adapter: board private structure |
|
1939 * @tx_ring: ring to be cleaned |
|
1940 **/ |
|
1941 |
|
1942 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
1943 struct e1000_tx_ring *tx_ring) |
|
1944 { |
|
1945 struct e1000_hw *hw = &adapter->hw; |
|
1946 struct e1000_buffer *buffer_info; |
|
1947 unsigned long size; |
|
1948 unsigned int i; |
|
1949 |
|
1950 /* Free all the Tx ring sk_buffs */ |
|
1951 |
|
1952 for (i = 0; i < tx_ring->count; i++) { |
|
1953 buffer_info = &tx_ring->buffer_info[i]; |
|
1954 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
1955 } |
|
1956 |
|
1957 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
1958 memset(tx_ring->buffer_info, 0, size); |
|
1959 |
|
1960 /* Zero out the descriptor ring */ |
|
1961 |
|
1962 memset(tx_ring->desc, 0, tx_ring->size); |
|
1963 |
|
1964 tx_ring->next_to_use = 0; |
|
1965 tx_ring->next_to_clean = 0; |
|
1966 tx_ring->last_tx_tso = 0; |
|
1967 |
|
1968 writel(0, hw->hw_addr + tx_ring->tdh); |
|
1969 writel(0, hw->hw_addr + tx_ring->tdt); |
|
1970 } |
|
1971 |
|
1972 /** |
|
1973 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
1974 * @adapter: board private structure |
|
1975 **/ |
|
1976 |
|
1977 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
1978 { |
|
1979 int i; |
|
1980 |
|
1981 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1982 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
1983 } |
|
1984 |
|
1985 /** |
|
1986 * e1000_free_rx_resources - Free Rx Resources |
|
1987 * @adapter: board private structure |
|
1988 * @rx_ring: ring to clean the resources from |
|
1989 * |
|
1990 * Free all receive software resources |
|
1991 **/ |
|
1992 |
|
1993 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
1994 struct e1000_rx_ring *rx_ring) |
|
1995 { |
|
1996 struct pci_dev *pdev = adapter->pdev; |
|
1997 |
|
1998 e1000_clean_rx_ring(adapter, rx_ring); |
|
1999 |
|
2000 vfree(rx_ring->buffer_info); |
|
2001 rx_ring->buffer_info = NULL; |
|
2002 |
|
2003 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2004 rx_ring->dma); |
|
2005 |
|
2006 rx_ring->desc = NULL; |
|
2007 } |
|
2008 |
|
2009 /** |
|
2010 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
2011 * @adapter: board private structure |
|
2012 * |
|
2013 * Free all receive software resources |
|
2014 **/ |
|
2015 |
|
2016 void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
2017 { |
|
2018 int i; |
|
2019 |
|
2020 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2021 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
2022 } |
|
2023 |
|
2024 /** |
|
2025 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
2026 * @adapter: board private structure |
|
2027 * @rx_ring: ring to free buffers from |
|
2028 **/ |
|
2029 |
|
2030 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
2031 struct e1000_rx_ring *rx_ring) |
|
2032 { |
|
2033 struct e1000_hw *hw = &adapter->hw; |
|
2034 struct e1000_buffer *buffer_info; |
|
2035 struct pci_dev *pdev = adapter->pdev; |
|
2036 unsigned long size; |
|
2037 unsigned int i; |
|
2038 |
|
2039 /* Free all the Rx ring sk_buffs */ |
|
2040 for (i = 0; i < rx_ring->count; i++) { |
|
2041 buffer_info = &rx_ring->buffer_info[i]; |
|
2042 if (buffer_info->dma && |
|
2043 adapter->clean_rx == e1000_clean_rx_irq) { |
|
2044 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
2045 buffer_info->length, |
|
2046 DMA_FROM_DEVICE); |
|
2047 } else if (buffer_info->dma && |
|
2048 adapter->clean_rx == e1000_clean_jumbo_rx_irq) { |
|
2049 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
2050 buffer_info->length, |
|
2051 DMA_FROM_DEVICE); |
|
2052 } |
|
2053 |
|
2054 buffer_info->dma = 0; |
|
2055 if (buffer_info->page) { |
|
2056 put_page(buffer_info->page); |
|
2057 buffer_info->page = NULL; |
|
2058 } |
|
2059 if (buffer_info->skb) { |
|
2060 dev_kfree_skb(buffer_info->skb); |
|
2061 buffer_info->skb = NULL; |
|
2062 } |
|
2063 } |
|
2064 |
|
2065 /* there also may be some cached data from a chained receive */ |
|
2066 if (rx_ring->rx_skb_top) { |
|
2067 dev_kfree_skb(rx_ring->rx_skb_top); |
|
2068 rx_ring->rx_skb_top = NULL; |
|
2069 } |
|
2070 |
|
2071 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2072 memset(rx_ring->buffer_info, 0, size); |
|
2073 |
|
2074 /* Zero out the descriptor ring */ |
|
2075 memset(rx_ring->desc, 0, rx_ring->size); |
|
2076 |
|
2077 rx_ring->next_to_clean = 0; |
|
2078 rx_ring->next_to_use = 0; |
|
2079 |
|
2080 writel(0, hw->hw_addr + rx_ring->rdh); |
|
2081 writel(0, hw->hw_addr + rx_ring->rdt); |
|
2082 } |
|
2083 |
|
2084 /** |
|
2085 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
2086 * @adapter: board private structure |
|
2087 **/ |
|
2088 |
|
2089 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
2090 { |
|
2091 int i; |
|
2092 |
|
2093 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2094 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
2095 } |
|
2096 |
|
2097 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2098 * and memory write and invalidate disabled for certain operations |
|
2099 */ |
|
2100 static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2101 { |
|
2102 struct e1000_hw *hw = &adapter->hw; |
|
2103 struct net_device *netdev = adapter->netdev; |
|
2104 u32 rctl; |
|
2105 |
|
2106 e1000_pci_clear_mwi(hw); |
|
2107 |
|
2108 rctl = er32(RCTL); |
|
2109 rctl |= E1000_RCTL_RST; |
|
2110 ew32(RCTL, rctl); |
|
2111 E1000_WRITE_FLUSH(); |
|
2112 mdelay(5); |
|
2113 |
|
2114 if (netif_running(netdev)) |
|
2115 e1000_clean_all_rx_rings(adapter); |
|
2116 } |
|
2117 |
|
2118 static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2119 { |
|
2120 struct e1000_hw *hw = &adapter->hw; |
|
2121 struct net_device *netdev = adapter->netdev; |
|
2122 u32 rctl; |
|
2123 |
|
2124 rctl = er32(RCTL); |
|
2125 rctl &= ~E1000_RCTL_RST; |
|
2126 ew32(RCTL, rctl); |
|
2127 E1000_WRITE_FLUSH(); |
|
2128 mdelay(5); |
|
2129 |
|
2130 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2131 e1000_pci_set_mwi(hw); |
|
2132 |
|
2133 if (netif_running(netdev)) { |
|
2134 /* No need to loop, because 82542 supports only 1 queue */ |
|
2135 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2136 e1000_configure_rx(adapter); |
|
2137 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2138 } |
|
2139 } |
|
2140 |
|
2141 /** |
|
2142 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2143 * @netdev: network interface device structure |
|
2144 * @p: pointer to an address structure |
|
2145 * |
|
2146 * Returns 0 on success, negative on failure |
|
2147 **/ |
|
2148 |
|
2149 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
2150 { |
|
2151 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2152 struct e1000_hw *hw = &adapter->hw; |
|
2153 struct sockaddr *addr = p; |
|
2154 |
|
2155 if (!is_valid_ether_addr(addr->sa_data)) |
|
2156 return -EADDRNOTAVAIL; |
|
2157 |
|
2158 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2159 |
|
2160 if (hw->mac_type == e1000_82542_rev2_0) |
|
2161 e1000_enter_82542_rst(adapter); |
|
2162 |
|
2163 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2164 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
|
2165 |
|
2166 e1000_rar_set(hw, hw->mac_addr, 0); |
|
2167 |
|
2168 if (hw->mac_type == e1000_82542_rev2_0) |
|
2169 e1000_leave_82542_rst(adapter); |
|
2170 |
|
2171 return 0; |
|
2172 } |
|
2173 |
|
2174 /** |
|
2175 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
|
2176 * @netdev: network interface device structure |
|
2177 * |
|
2178 * The set_rx_mode entry point is called whenever the unicast or multicast |
|
2179 * address lists or the network interface flags are updated. This routine is |
|
2180 * responsible for configuring the hardware for proper unicast, multicast, |
|
2181 * promiscuous mode, and all-multi behavior. |
|
2182 **/ |
|
2183 |
|
2184 static void e1000_set_rx_mode(struct net_device *netdev) |
|
2185 { |
|
2186 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2187 struct e1000_hw *hw = &adapter->hw; |
|
2188 struct netdev_hw_addr *ha; |
|
2189 bool use_uc = false; |
|
2190 u32 rctl; |
|
2191 u32 hash_value; |
|
2192 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2193 int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
|
2194 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
|
2195 |
|
2196 if (!mcarray) { |
|
2197 e_err(probe, "memory allocation failed\n"); |
|
2198 return; |
|
2199 } |
|
2200 |
|
2201 /* Check for Promiscuous and All Multicast modes */ |
|
2202 |
|
2203 rctl = er32(RCTL); |
|
2204 |
|
2205 if (netdev->flags & IFF_PROMISC) { |
|
2206 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2207 rctl &= ~E1000_RCTL_VFE; |
|
2208 } else { |
|
2209 if (netdev->flags & IFF_ALLMULTI) |
|
2210 rctl |= E1000_RCTL_MPE; |
|
2211 else |
|
2212 rctl &= ~E1000_RCTL_MPE; |
|
2213 /* Enable VLAN filter if there is a VLAN */ |
|
2214 if (adapter->vlgrp) |
|
2215 rctl |= E1000_RCTL_VFE; |
|
2216 } |
|
2217 |
|
2218 if (netdev_uc_count(netdev) > rar_entries - 1) { |
|
2219 rctl |= E1000_RCTL_UPE; |
|
2220 } else if (!(netdev->flags & IFF_PROMISC)) { |
|
2221 rctl &= ~E1000_RCTL_UPE; |
|
2222 use_uc = true; |
|
2223 } |
|
2224 |
|
2225 ew32(RCTL, rctl); |
|
2226 |
|
2227 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2228 |
|
2229 if (hw->mac_type == e1000_82542_rev2_0) |
|
2230 e1000_enter_82542_rst(adapter); |
|
2231 |
|
2232 /* load the first 14 addresses into the exact filters 1-14. Unicast |
|
2233 * addresses take precedence to avoid disabling unicast filtering |
|
2234 * when possible. |
|
2235 * |
|
2236 * RAR 0 is used for the station MAC address |
|
2237 * if there are not 14 addresses, go ahead and clear the filters |
|
2238 */ |
|
2239 i = 1; |
|
2240 if (use_uc) |
|
2241 netdev_for_each_uc_addr(ha, netdev) { |
|
2242 if (i == rar_entries) |
|
2243 break; |
|
2244 e1000_rar_set(hw, ha->addr, i++); |
|
2245 } |
|
2246 |
|
2247 netdev_for_each_mc_addr(ha, netdev) { |
|
2248 if (i == rar_entries) { |
|
2249 /* load any remaining addresses into the hash table */ |
|
2250 u32 hash_reg, hash_bit, mta; |
|
2251 hash_value = e1000_hash_mc_addr(hw, ha->addr); |
|
2252 hash_reg = (hash_value >> 5) & 0x7F; |
|
2253 hash_bit = hash_value & 0x1F; |
|
2254 mta = (1 << hash_bit); |
|
2255 mcarray[hash_reg] |= mta; |
|
2256 } else { |
|
2257 e1000_rar_set(hw, ha->addr, i++); |
|
2258 } |
|
2259 } |
|
2260 |
|
2261 for (; i < rar_entries; i++) { |
|
2262 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2263 E1000_WRITE_FLUSH(); |
|
2264 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2265 E1000_WRITE_FLUSH(); |
|
2266 } |
|
2267 |
|
2268 /* write the hash table completely, write from bottom to avoid |
|
2269 * both stupid write combining chipsets, and flushing each write */ |
|
2270 for (i = mta_reg_count - 1; i >= 0 ; i--) { |
|
2271 /* |
|
2272 * If we are on an 82544 has an errata where writing odd |
|
2273 * offsets overwrites the previous even offset, but writing |
|
2274 * backwards over the range solves the issue by always |
|
2275 * writing the odd offset first |
|
2276 */ |
|
2277 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); |
|
2278 } |
|
2279 E1000_WRITE_FLUSH(); |
|
2280 |
|
2281 if (hw->mac_type == e1000_82542_rev2_0) |
|
2282 e1000_leave_82542_rst(adapter); |
|
2283 |
|
2284 kfree(mcarray); |
|
2285 } |
|
2286 |
|
2287 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2288 * the phy */ |
|
2289 |
|
2290 static void e1000_update_phy_info(unsigned long data) |
|
2291 { |
|
2292 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2293 schedule_work(&adapter->phy_info_task); |
|
2294 } |
|
2295 |
|
2296 static void e1000_update_phy_info_task(struct work_struct *work) |
|
2297 { |
|
2298 struct e1000_adapter *adapter = container_of(work, |
|
2299 struct e1000_adapter, |
|
2300 phy_info_task); |
|
2301 struct e1000_hw *hw = &adapter->hw; |
|
2302 |
|
2303 rtnl_lock(); |
|
2304 e1000_phy_get_info(hw, &adapter->phy_info); |
|
2305 rtnl_unlock(); |
|
2306 } |
|
2307 |
|
2308 /** |
|
2309 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2310 * @data: pointer to adapter cast into an unsigned long |
|
2311 **/ |
|
2312 static void e1000_82547_tx_fifo_stall(unsigned long data) |
|
2313 { |
|
2314 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2315 schedule_work(&adapter->fifo_stall_task); |
|
2316 } |
|
2317 |
|
2318 /** |
|
2319 * e1000_82547_tx_fifo_stall_task - task to complete work |
|
2320 * @work: work struct contained inside adapter struct |
|
2321 **/ |
|
2322 static void e1000_82547_tx_fifo_stall_task(struct work_struct *work) |
|
2323 { |
|
2324 struct e1000_adapter *adapter = container_of(work, |
|
2325 struct e1000_adapter, |
|
2326 fifo_stall_task); |
|
2327 struct e1000_hw *hw = &adapter->hw; |
|
2328 struct net_device *netdev = adapter->netdev; |
|
2329 u32 tctl; |
|
2330 |
|
2331 rtnl_lock(); |
|
2332 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2333 if ((er32(TDT) == er32(TDH)) && |
|
2334 (er32(TDFT) == er32(TDFH)) && |
|
2335 (er32(TDFTS) == er32(TDFHS))) { |
|
2336 tctl = er32(TCTL); |
|
2337 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
2338 ew32(TDFT, adapter->tx_head_addr); |
|
2339 ew32(TDFH, adapter->tx_head_addr); |
|
2340 ew32(TDFTS, adapter->tx_head_addr); |
|
2341 ew32(TDFHS, adapter->tx_head_addr); |
|
2342 ew32(TCTL, tctl); |
|
2343 E1000_WRITE_FLUSH(); |
|
2344 |
|
2345 adapter->tx_fifo_head = 0; |
|
2346 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2347 netif_wake_queue(netdev); |
|
2348 } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
|
2349 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2350 } |
|
2351 } |
|
2352 rtnl_unlock(); |
|
2353 } |
|
2354 |
|
2355 bool e1000_has_link(struct e1000_adapter *adapter) |
|
2356 { |
|
2357 struct e1000_hw *hw = &adapter->hw; |
|
2358 bool link_active = false; |
|
2359 |
|
2360 /* get_link_status is set on LSC (link status) interrupt or |
|
2361 * rx sequence error interrupt. get_link_status will stay |
|
2362 * false until the e1000_check_for_link establishes link |
|
2363 * for copper adapters ONLY |
|
2364 */ |
|
2365 switch (hw->media_type) { |
|
2366 case e1000_media_type_copper: |
|
2367 if (hw->get_link_status) { |
|
2368 e1000_check_for_link(hw); |
|
2369 link_active = !hw->get_link_status; |
|
2370 } else { |
|
2371 link_active = true; |
|
2372 } |
|
2373 break; |
|
2374 case e1000_media_type_fiber: |
|
2375 e1000_check_for_link(hw); |
|
2376 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
2377 break; |
|
2378 case e1000_media_type_internal_serdes: |
|
2379 e1000_check_for_link(hw); |
|
2380 link_active = hw->serdes_has_link; |
|
2381 break; |
|
2382 default: |
|
2383 break; |
|
2384 } |
|
2385 |
|
2386 return link_active; |
|
2387 } |
|
2388 |
|
2389 /** |
|
2390 * e1000_watchdog - Timer Call-back |
|
2391 * @data: pointer to adapter cast into an unsigned long |
|
2392 **/ |
|
2393 static void e1000_watchdog(unsigned long data) |
|
2394 { |
|
2395 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2396 struct e1000_hw *hw = &adapter->hw; |
|
2397 struct net_device *netdev = adapter->netdev; |
|
2398 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2399 u32 link, tctl; |
|
2400 |
|
2401 link = e1000_has_link(adapter); |
|
2402 if ((netif_carrier_ok(netdev)) && link) |
|
2403 goto link_up; |
|
2404 |
|
2405 if (link) { |
|
2406 if (!netif_carrier_ok(netdev)) { |
|
2407 u32 ctrl; |
|
2408 bool txb2b = true; |
|
2409 /* update snapshot of PHY registers on LSC */ |
|
2410 e1000_get_speed_and_duplex(hw, |
|
2411 &adapter->link_speed, |
|
2412 &adapter->link_duplex); |
|
2413 |
|
2414 ctrl = er32(CTRL); |
|
2415 pr_info("%s NIC Link is Up %d Mbps %s, " |
|
2416 "Flow Control: %s\n", |
|
2417 netdev->name, |
|
2418 adapter->link_speed, |
|
2419 adapter->link_duplex == FULL_DUPLEX ? |
|
2420 "Full Duplex" : "Half Duplex", |
|
2421 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2422 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2423 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2424 E1000_CTRL_TFCE) ? "TX" : "None"))); |
|
2425 |
|
2426 /* adjust timeout factor according to speed/duplex */ |
|
2427 adapter->tx_timeout_factor = 1; |
|
2428 switch (adapter->link_speed) { |
|
2429 case SPEED_10: |
|
2430 txb2b = false; |
|
2431 adapter->tx_timeout_factor = 16; |
|
2432 break; |
|
2433 case SPEED_100: |
|
2434 txb2b = false; |
|
2435 /* maybe add some timeout factor ? */ |
|
2436 break; |
|
2437 } |
|
2438 |
|
2439 /* enable transmits in the hardware */ |
|
2440 tctl = er32(TCTL); |
|
2441 tctl |= E1000_TCTL_EN; |
|
2442 ew32(TCTL, tctl); |
|
2443 |
|
2444 netif_carrier_on(netdev); |
|
2445 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2446 mod_timer(&adapter->phy_info_timer, |
|
2447 round_jiffies(jiffies + 2 * HZ)); |
|
2448 adapter->smartspeed = 0; |
|
2449 } |
|
2450 } else { |
|
2451 if (netif_carrier_ok(netdev)) { |
|
2452 adapter->link_speed = 0; |
|
2453 adapter->link_duplex = 0; |
|
2454 pr_info("%s NIC Link is Down\n", |
|
2455 netdev->name); |
|
2456 netif_carrier_off(netdev); |
|
2457 |
|
2458 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2459 mod_timer(&adapter->phy_info_timer, |
|
2460 round_jiffies(jiffies + 2 * HZ)); |
|
2461 } |
|
2462 |
|
2463 e1000_smartspeed(adapter); |
|
2464 } |
|
2465 |
|
2466 link_up: |
|
2467 e1000_update_stats(adapter); |
|
2468 |
|
2469 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2470 adapter->tpt_old = adapter->stats.tpt; |
|
2471 hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2472 adapter->colc_old = adapter->stats.colc; |
|
2473 |
|
2474 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2475 adapter->gorcl_old = adapter->stats.gorcl; |
|
2476 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2477 adapter->gotcl_old = adapter->stats.gotcl; |
|
2478 |
|
2479 e1000_update_adaptive(hw); |
|
2480 |
|
2481 if (!netif_carrier_ok(netdev)) { |
|
2482 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2483 /* We've lost link, so the controller stops DMA, |
|
2484 * but we've got queued Tx work that's never going |
|
2485 * to get done, so reset controller to flush Tx. |
|
2486 * (Do the reset outside of interrupt context). */ |
|
2487 adapter->tx_timeout_count++; |
|
2488 schedule_work(&adapter->reset_task); |
|
2489 /* return immediately since reset is imminent */ |
|
2490 return; |
|
2491 } |
|
2492 } |
|
2493 |
|
2494 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
2495 if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { |
|
2496 /* |
|
2497 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
2498 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
2499 * everyone else is between 2000-8000. |
|
2500 */ |
|
2501 u32 goc = (adapter->gotcl + adapter->gorcl) / 10000; |
|
2502 u32 dif = (adapter->gotcl > adapter->gorcl ? |
|
2503 adapter->gotcl - adapter->gorcl : |
|
2504 adapter->gorcl - adapter->gotcl) / 10000; |
|
2505 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
2506 |
|
2507 ew32(ITR, 1000000000 / (itr * 256)); |
|
2508 } |
|
2509 |
|
2510 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2511 ew32(ICS, E1000_ICS_RXDMT0); |
|
2512 |
|
2513 /* Force detection of hung controller every watchdog period */ |
|
2514 adapter->detect_tx_hung = true; |
|
2515 |
|
2516 /* Reset the timer */ |
|
2517 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2518 mod_timer(&adapter->watchdog_timer, |
|
2519 round_jiffies(jiffies + 2 * HZ)); |
|
2520 } |
|
2521 |
|
2522 enum latency_range { |
|
2523 lowest_latency = 0, |
|
2524 low_latency = 1, |
|
2525 bulk_latency = 2, |
|
2526 latency_invalid = 255 |
|
2527 }; |
|
2528 |
|
2529 /** |
|
2530 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2531 * @adapter: pointer to adapter |
|
2532 * @itr_setting: current adapter->itr |
|
2533 * @packets: the number of packets during this measurement interval |
|
2534 * @bytes: the number of bytes during this measurement interval |
|
2535 * |
|
2536 * Stores a new ITR value based on packets and byte |
|
2537 * counts during the last interrupt. The advantage of per interrupt |
|
2538 * computation is faster updates and more accurate ITR for the current |
|
2539 * traffic pattern. Constants in this function were computed |
|
2540 * based on theoretical maximum wire speed and thresholds were set based |
|
2541 * on testing data as well as attempting to minimize response time |
|
2542 * while increasing bulk throughput. |
|
2543 * this functionality is controlled by the InterruptThrottleRate module |
|
2544 * parameter (see e1000_param.c) |
|
2545 **/ |
|
2546 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2547 u16 itr_setting, int packets, int bytes) |
|
2548 { |
|
2549 unsigned int retval = itr_setting; |
|
2550 struct e1000_hw *hw = &adapter->hw; |
|
2551 |
|
2552 if (unlikely(hw->mac_type < e1000_82540)) |
|
2553 goto update_itr_done; |
|
2554 |
|
2555 if (packets == 0) |
|
2556 goto update_itr_done; |
|
2557 |
|
2558 switch (itr_setting) { |
|
2559 case lowest_latency: |
|
2560 /* jumbo frames get bulk treatment*/ |
|
2561 if (bytes/packets > 8000) |
|
2562 retval = bulk_latency; |
|
2563 else if ((packets < 5) && (bytes > 512)) |
|
2564 retval = low_latency; |
|
2565 break; |
|
2566 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2567 if (bytes > 10000) { |
|
2568 /* jumbo frames need bulk latency setting */ |
|
2569 if (bytes/packets > 8000) |
|
2570 retval = bulk_latency; |
|
2571 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2572 retval = bulk_latency; |
|
2573 else if ((packets > 35)) |
|
2574 retval = lowest_latency; |
|
2575 } else if (bytes/packets > 2000) |
|
2576 retval = bulk_latency; |
|
2577 else if (packets <= 2 && bytes < 512) |
|
2578 retval = lowest_latency; |
|
2579 break; |
|
2580 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2581 if (bytes > 25000) { |
|
2582 if (packets > 35) |
|
2583 retval = low_latency; |
|
2584 } else if (bytes < 6000) { |
|
2585 retval = low_latency; |
|
2586 } |
|
2587 break; |
|
2588 } |
|
2589 |
|
2590 update_itr_done: |
|
2591 return retval; |
|
2592 } |
|
2593 |
|
2594 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2595 { |
|
2596 struct e1000_hw *hw = &adapter->hw; |
|
2597 u16 current_itr; |
|
2598 u32 new_itr = adapter->itr; |
|
2599 |
|
2600 if (unlikely(hw->mac_type < e1000_82540)) |
|
2601 return; |
|
2602 |
|
2603 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2604 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2605 current_itr = 0; |
|
2606 new_itr = 4000; |
|
2607 goto set_itr_now; |
|
2608 } |
|
2609 |
|
2610 adapter->tx_itr = e1000_update_itr(adapter, |
|
2611 adapter->tx_itr, |
|
2612 adapter->total_tx_packets, |
|
2613 adapter->total_tx_bytes); |
|
2614 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2615 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2616 adapter->tx_itr = low_latency; |
|
2617 |
|
2618 adapter->rx_itr = e1000_update_itr(adapter, |
|
2619 adapter->rx_itr, |
|
2620 adapter->total_rx_packets, |
|
2621 adapter->total_rx_bytes); |
|
2622 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2623 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2624 adapter->rx_itr = low_latency; |
|
2625 |
|
2626 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2627 |
|
2628 switch (current_itr) { |
|
2629 /* counts and packets in update_itr are dependent on these numbers */ |
|
2630 case lowest_latency: |
|
2631 new_itr = 70000; |
|
2632 break; |
|
2633 case low_latency: |
|
2634 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2635 break; |
|
2636 case bulk_latency: |
|
2637 new_itr = 4000; |
|
2638 break; |
|
2639 default: |
|
2640 break; |
|
2641 } |
|
2642 |
|
2643 set_itr_now: |
|
2644 if (new_itr != adapter->itr) { |
|
2645 /* this attempts to bias the interrupt rate towards Bulk |
|
2646 * by adding intermediate steps when interrupt rate is |
|
2647 * increasing */ |
|
2648 new_itr = new_itr > adapter->itr ? |
|
2649 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2650 new_itr; |
|
2651 adapter->itr = new_itr; |
|
2652 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2653 } |
|
2654 } |
|
2655 |
|
2656 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2657 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2658 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2659 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2660 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2661 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2662 |
|
2663 static int e1000_tso(struct e1000_adapter *adapter, |
|
2664 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2665 { |
|
2666 struct e1000_context_desc *context_desc; |
|
2667 struct e1000_buffer *buffer_info; |
|
2668 unsigned int i; |
|
2669 u32 cmd_length = 0; |
|
2670 u16 ipcse = 0, tucse, mss; |
|
2671 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
2672 int err; |
|
2673 |
|
2674 if (skb_is_gso(skb)) { |
|
2675 if (skb_header_cloned(skb)) { |
|
2676 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2677 if (err) |
|
2678 return err; |
|
2679 } |
|
2680 |
|
2681 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2682 mss = skb_shinfo(skb)->gso_size; |
|
2683 if (skb->protocol == htons(ETH_P_IP)) { |
|
2684 struct iphdr *iph = ip_hdr(skb); |
|
2685 iph->tot_len = 0; |
|
2686 iph->check = 0; |
|
2687 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2688 iph->daddr, 0, |
|
2689 IPPROTO_TCP, |
|
2690 0); |
|
2691 cmd_length = E1000_TXD_CMD_IP; |
|
2692 ipcse = skb_transport_offset(skb) - 1; |
|
2693 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2694 ipv6_hdr(skb)->payload_len = 0; |
|
2695 tcp_hdr(skb)->check = |
|
2696 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2697 &ipv6_hdr(skb)->daddr, |
|
2698 0, IPPROTO_TCP, 0); |
|
2699 ipcse = 0; |
|
2700 } |
|
2701 ipcss = skb_network_offset(skb); |
|
2702 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2703 tucss = skb_transport_offset(skb); |
|
2704 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2705 tucse = 0; |
|
2706 |
|
2707 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2708 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2709 |
|
2710 i = tx_ring->next_to_use; |
|
2711 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2712 buffer_info = &tx_ring->buffer_info[i]; |
|
2713 |
|
2714 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2715 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2716 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2717 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2718 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2719 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2720 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2721 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2722 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2723 |
|
2724 buffer_info->time_stamp = jiffies; |
|
2725 buffer_info->next_to_watch = i; |
|
2726 |
|
2727 if (++i == tx_ring->count) i = 0; |
|
2728 tx_ring->next_to_use = i; |
|
2729 |
|
2730 return true; |
|
2731 } |
|
2732 return false; |
|
2733 } |
|
2734 |
|
2735 static bool e1000_tx_csum(struct e1000_adapter *adapter, |
|
2736 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2737 { |
|
2738 struct e1000_context_desc *context_desc; |
|
2739 struct e1000_buffer *buffer_info; |
|
2740 unsigned int i; |
|
2741 u8 css; |
|
2742 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
2743 |
|
2744 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
2745 return false; |
|
2746 |
|
2747 switch (skb->protocol) { |
|
2748 case cpu_to_be16(ETH_P_IP): |
|
2749 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
2750 cmd_len |= E1000_TXD_CMD_TCP; |
|
2751 break; |
|
2752 case cpu_to_be16(ETH_P_IPV6): |
|
2753 /* XXX not handling all IPV6 headers */ |
|
2754 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
2755 cmd_len |= E1000_TXD_CMD_TCP; |
|
2756 break; |
|
2757 default: |
|
2758 if (unlikely(net_ratelimit())) |
|
2759 e_warn(drv, "checksum_partial proto=%x!\n", |
|
2760 skb->protocol); |
|
2761 break; |
|
2762 } |
|
2763 |
|
2764 css = skb_checksum_start_offset(skb); |
|
2765 |
|
2766 i = tx_ring->next_to_use; |
|
2767 buffer_info = &tx_ring->buffer_info[i]; |
|
2768 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2769 |
|
2770 context_desc->lower_setup.ip_config = 0; |
|
2771 context_desc->upper_setup.tcp_fields.tucss = css; |
|
2772 context_desc->upper_setup.tcp_fields.tucso = |
|
2773 css + skb->csum_offset; |
|
2774 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
2775 context_desc->tcp_seg_setup.data = 0; |
|
2776 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
2777 |
|
2778 buffer_info->time_stamp = jiffies; |
|
2779 buffer_info->next_to_watch = i; |
|
2780 |
|
2781 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2782 tx_ring->next_to_use = i; |
|
2783 |
|
2784 return true; |
|
2785 } |
|
2786 |
|
2787 #define E1000_MAX_TXD_PWR 12 |
|
2788 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
2789 |
|
2790 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
2791 struct e1000_tx_ring *tx_ring, |
|
2792 struct sk_buff *skb, unsigned int first, |
|
2793 unsigned int max_per_txd, unsigned int nr_frags, |
|
2794 unsigned int mss) |
|
2795 { |
|
2796 struct e1000_hw *hw = &adapter->hw; |
|
2797 struct pci_dev *pdev = adapter->pdev; |
|
2798 struct e1000_buffer *buffer_info; |
|
2799 unsigned int len = skb_headlen(skb); |
|
2800 unsigned int offset = 0, size, count = 0, i; |
|
2801 unsigned int f; |
|
2802 |
|
2803 i = tx_ring->next_to_use; |
|
2804 |
|
2805 while (len) { |
|
2806 buffer_info = &tx_ring->buffer_info[i]; |
|
2807 size = min(len, max_per_txd); |
|
2808 /* Workaround for Controller erratum -- |
|
2809 * descriptor for non-tso packet in a linear SKB that follows a |
|
2810 * tso gets written back prematurely before the data is fully |
|
2811 * DMA'd to the controller */ |
|
2812 if (!skb->data_len && tx_ring->last_tx_tso && |
|
2813 !skb_is_gso(skb)) { |
|
2814 tx_ring->last_tx_tso = 0; |
|
2815 size -= 4; |
|
2816 } |
|
2817 |
|
2818 /* Workaround for premature desc write-backs |
|
2819 * in TSO mode. Append 4-byte sentinel desc */ |
|
2820 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
2821 size -= 4; |
|
2822 /* work-around for errata 10 and it applies |
|
2823 * to all controllers in PCI-X mode |
|
2824 * The fix is to make sure that the first descriptor of a |
|
2825 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
2826 */ |
|
2827 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
2828 (size > 2015) && count == 0)) |
|
2829 size = 2015; |
|
2830 |
|
2831 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
2832 * terminating buffers within evenly-aligned dwords. */ |
|
2833 if (unlikely(adapter->pcix_82544 && |
|
2834 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
2835 size > 4)) |
|
2836 size -= 4; |
|
2837 |
|
2838 buffer_info->length = size; |
|
2839 /* set time_stamp *before* dma to help avoid a possible race */ |
|
2840 buffer_info->time_stamp = jiffies; |
|
2841 buffer_info->mapped_as_page = false; |
|
2842 buffer_info->dma = dma_map_single(&pdev->dev, |
|
2843 skb->data + offset, |
|
2844 size, DMA_TO_DEVICE); |
|
2845 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
2846 goto dma_error; |
|
2847 buffer_info->next_to_watch = i; |
|
2848 |
|
2849 len -= size; |
|
2850 offset += size; |
|
2851 count++; |
|
2852 if (len) { |
|
2853 i++; |
|
2854 if (unlikely(i == tx_ring->count)) |
|
2855 i = 0; |
|
2856 } |
|
2857 } |
|
2858 |
|
2859 for (f = 0; f < nr_frags; f++) { |
|
2860 struct skb_frag_struct *frag; |
|
2861 |
|
2862 frag = &skb_shinfo(skb)->frags[f]; |
|
2863 len = frag->size; |
|
2864 offset = frag->page_offset; |
|
2865 |
|
2866 while (len) { |
|
2867 i++; |
|
2868 if (unlikely(i == tx_ring->count)) |
|
2869 i = 0; |
|
2870 |
|
2871 buffer_info = &tx_ring->buffer_info[i]; |
|
2872 size = min(len, max_per_txd); |
|
2873 /* Workaround for premature desc write-backs |
|
2874 * in TSO mode. Append 4-byte sentinel desc */ |
|
2875 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
2876 size -= 4; |
|
2877 /* Workaround for potential 82544 hang in PCI-X. |
|
2878 * Avoid terminating buffers within evenly-aligned |
|
2879 * dwords. */ |
|
2880 if (unlikely(adapter->pcix_82544 && |
|
2881 !((unsigned long)(page_to_phys(frag->page) + offset |
|
2882 + size - 1) & 4) && |
|
2883 size > 4)) |
|
2884 size -= 4; |
|
2885 |
|
2886 buffer_info->length = size; |
|
2887 buffer_info->time_stamp = jiffies; |
|
2888 buffer_info->mapped_as_page = true; |
|
2889 buffer_info->dma = dma_map_page(&pdev->dev, frag->page, |
|
2890 offset, size, |
|
2891 DMA_TO_DEVICE); |
|
2892 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
2893 goto dma_error; |
|
2894 buffer_info->next_to_watch = i; |
|
2895 |
|
2896 len -= size; |
|
2897 offset += size; |
|
2898 count++; |
|
2899 } |
|
2900 } |
|
2901 |
|
2902 tx_ring->buffer_info[i].skb = skb; |
|
2903 tx_ring->buffer_info[first].next_to_watch = i; |
|
2904 |
|
2905 return count; |
|
2906 |
|
2907 dma_error: |
|
2908 dev_err(&pdev->dev, "TX DMA map failed\n"); |
|
2909 buffer_info->dma = 0; |
|
2910 if (count) |
|
2911 count--; |
|
2912 |
|
2913 while (count--) { |
|
2914 if (i==0) |
|
2915 i += tx_ring->count; |
|
2916 i--; |
|
2917 buffer_info = &tx_ring->buffer_info[i]; |
|
2918 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
2919 } |
|
2920 |
|
2921 return 0; |
|
2922 } |
|
2923 |
|
2924 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
2925 struct e1000_tx_ring *tx_ring, int tx_flags, |
|
2926 int count) |
|
2927 { |
|
2928 struct e1000_hw *hw = &adapter->hw; |
|
2929 struct e1000_tx_desc *tx_desc = NULL; |
|
2930 struct e1000_buffer *buffer_info; |
|
2931 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
2932 unsigned int i; |
|
2933 |
|
2934 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
2935 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
2936 E1000_TXD_CMD_TSE; |
|
2937 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2938 |
|
2939 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
2940 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
2941 } |
|
2942 |
|
2943 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
2944 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
2945 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
2946 } |
|
2947 |
|
2948 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
2949 txd_lower |= E1000_TXD_CMD_VLE; |
|
2950 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
2951 } |
|
2952 |
|
2953 i = tx_ring->next_to_use; |
|
2954 |
|
2955 while (count--) { |
|
2956 buffer_info = &tx_ring->buffer_info[i]; |
|
2957 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
2958 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
2959 tx_desc->lower.data = |
|
2960 cpu_to_le32(txd_lower | buffer_info->length); |
|
2961 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
2962 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2963 } |
|
2964 |
|
2965 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
2966 |
|
2967 /* Force memory writes to complete before letting h/w |
|
2968 * know there are new descriptors to fetch. (Only |
|
2969 * applicable for weak-ordered memory model archs, |
|
2970 * such as IA-64). */ |
|
2971 wmb(); |
|
2972 |
|
2973 tx_ring->next_to_use = i; |
|
2974 writel(i, hw->hw_addr + tx_ring->tdt); |
|
2975 /* we need this if more than one processor can write to our tail |
|
2976 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
2977 mmiowb(); |
|
2978 } |
|
2979 |
|
2980 /** |
|
2981 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
2982 * The workaround is to avoid queuing a large packet that would span |
|
2983 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
2984 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
2985 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
2986 * to the beginning of the Tx FIFO. |
|
2987 **/ |
|
2988 |
|
2989 #define E1000_FIFO_HDR 0x10 |
|
2990 #define E1000_82547_PAD_LEN 0x3E0 |
|
2991 |
|
2992 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
|
2993 struct sk_buff *skb) |
|
2994 { |
|
2995 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
2996 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
2997 |
|
2998 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
2999 |
|
3000 if (adapter->link_duplex != HALF_DUPLEX) |
|
3001 goto no_fifo_stall_required; |
|
3002 |
|
3003 if (atomic_read(&adapter->tx_fifo_stall)) |
|
3004 return 1; |
|
3005 |
|
3006 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
3007 atomic_set(&adapter->tx_fifo_stall, 1); |
|
3008 return 1; |
|
3009 } |
|
3010 |
|
3011 no_fifo_stall_required: |
|
3012 adapter->tx_fifo_head += skb_fifo_len; |
|
3013 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
3014 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
3015 return 0; |
|
3016 } |
|
3017 |
|
3018 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
3019 { |
|
3020 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3021 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
3022 |
|
3023 netif_stop_queue(netdev); |
|
3024 /* Herbert's original patch had: |
|
3025 * smp_mb__after_netif_stop_queue(); |
|
3026 * but since that doesn't exist yet, just open code it. */ |
|
3027 smp_mb(); |
|
3028 |
|
3029 /* We need to check again in a case another CPU has just |
|
3030 * made room available. */ |
|
3031 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
3032 return -EBUSY; |
|
3033 |
|
3034 /* A reprieve! */ |
|
3035 netif_start_queue(netdev); |
|
3036 ++adapter->restart_queue; |
|
3037 return 0; |
|
3038 } |
|
3039 |
|
3040 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
3041 struct e1000_tx_ring *tx_ring, int size) |
|
3042 { |
|
3043 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
3044 return 0; |
|
3045 return __e1000_maybe_stop_tx(netdev, size); |
|
3046 } |
|
3047 |
|
3048 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
3049 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
3050 struct net_device *netdev) |
|
3051 { |
|
3052 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3053 struct e1000_hw *hw = &adapter->hw; |
|
3054 struct e1000_tx_ring *tx_ring; |
|
3055 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
3056 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
3057 unsigned int tx_flags = 0; |
|
3058 unsigned int len = skb_headlen(skb); |
|
3059 unsigned int nr_frags; |
|
3060 unsigned int mss; |
|
3061 int count = 0; |
|
3062 int tso; |
|
3063 unsigned int f; |
|
3064 |
|
3065 /* This goes back to the question of how to logically map a tx queue |
|
3066 * to a flow. Right now, performance is impacted slightly negatively |
|
3067 * if using multiple tx queues. If the stack breaks away from a |
|
3068 * single qdisc implementation, we can look at this again. */ |
|
3069 tx_ring = adapter->tx_ring; |
|
3070 |
|
3071 if (unlikely(skb->len <= 0)) { |
|
3072 dev_kfree_skb_any(skb); |
|
3073 return NETDEV_TX_OK; |
|
3074 } |
|
3075 |
|
3076 mss = skb_shinfo(skb)->gso_size; |
|
3077 /* The controller does a simple calculation to |
|
3078 * make sure there is enough room in the FIFO before |
|
3079 * initiating the DMA for each buffer. The calc is: |
|
3080 * 4 = ceil(buffer len/mss). To make sure we don't |
|
3081 * overrun the FIFO, adjust the max buffer len if mss |
|
3082 * drops. */ |
|
3083 if (mss) { |
|
3084 u8 hdr_len; |
|
3085 max_per_txd = min(mss << 2, max_per_txd); |
|
3086 max_txd_pwr = fls(max_per_txd) - 1; |
|
3087 |
|
3088 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
3089 if (skb->data_len && hdr_len == len) { |
|
3090 switch (hw->mac_type) { |
|
3091 unsigned int pull_size; |
|
3092 case e1000_82544: |
|
3093 /* Make sure we have room to chop off 4 bytes, |
|
3094 * and that the end alignment will work out to |
|
3095 * this hardware's requirements |
|
3096 * NOTE: this is a TSO only workaround |
|
3097 * if end byte alignment not correct move us |
|
3098 * into the next dword */ |
|
3099 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
3100 break; |
|
3101 /* fall through */ |
|
3102 pull_size = min((unsigned int)4, skb->data_len); |
|
3103 if (!__pskb_pull_tail(skb, pull_size)) { |
|
3104 e_err(drv, "__pskb_pull_tail " |
|
3105 "failed.\n"); |
|
3106 dev_kfree_skb_any(skb); |
|
3107 return NETDEV_TX_OK; |
|
3108 } |
|
3109 len = skb_headlen(skb); |
|
3110 break; |
|
3111 default: |
|
3112 /* do nothing */ |
|
3113 break; |
|
3114 } |
|
3115 } |
|
3116 } |
|
3117 |
|
3118 /* reserve a descriptor for the offload context */ |
|
3119 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
3120 count++; |
|
3121 count++; |
|
3122 |
|
3123 /* Controller Erratum workaround */ |
|
3124 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
3125 count++; |
|
3126 |
|
3127 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
3128 |
|
3129 if (adapter->pcix_82544) |
|
3130 count++; |
|
3131 |
|
3132 /* work-around for errata 10 and it applies to all controllers |
|
3133 * in PCI-X mode, so add one more descriptor to the count |
|
3134 */ |
|
3135 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
3136 (len > 2015))) |
|
3137 count++; |
|
3138 |
|
3139 nr_frags = skb_shinfo(skb)->nr_frags; |
|
3140 for (f = 0; f < nr_frags; f++) |
|
3141 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3142 max_txd_pwr); |
|
3143 if (adapter->pcix_82544) |
|
3144 count += nr_frags; |
|
3145 |
|
3146 /* need: count + 2 desc gap to keep tail from touching |
|
3147 * head, otherwise try next time */ |
|
3148 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
|
3149 return NETDEV_TX_BUSY; |
|
3150 |
|
3151 if (unlikely(hw->mac_type == e1000_82547)) { |
|
3152 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3153 netif_stop_queue(netdev); |
|
3154 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3155 mod_timer(&adapter->tx_fifo_stall_timer, |
|
3156 jiffies + 1); |
|
3157 return NETDEV_TX_BUSY; |
|
3158 } |
|
3159 } |
|
3160 |
|
3161 if (unlikely(vlan_tx_tag_present(skb))) { |
|
3162 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3163 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3164 } |
|
3165 |
|
3166 first = tx_ring->next_to_use; |
|
3167 |
|
3168 tso = e1000_tso(adapter, tx_ring, skb); |
|
3169 if (tso < 0) { |
|
3170 dev_kfree_skb_any(skb); |
|
3171 return NETDEV_TX_OK; |
|
3172 } |
|
3173 |
|
3174 if (likely(tso)) { |
|
3175 if (likely(hw->mac_type != e1000_82544)) |
|
3176 tx_ring->last_tx_tso = 1; |
|
3177 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3178 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3179 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3180 |
|
3181 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3182 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3183 |
|
3184 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
|
3185 nr_frags, mss); |
|
3186 |
|
3187 if (count) { |
|
3188 e1000_tx_queue(adapter, tx_ring, tx_flags, count); |
|
3189 /* Make sure there is space in the ring for the next send. */ |
|
3190 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3191 |
|
3192 } else { |
|
3193 dev_kfree_skb_any(skb); |
|
3194 tx_ring->buffer_info[first].time_stamp = 0; |
|
3195 tx_ring->next_to_use = first; |
|
3196 } |
|
3197 |
|
3198 return NETDEV_TX_OK; |
|
3199 } |
|
3200 |
|
3201 /** |
|
3202 * e1000_tx_timeout - Respond to a Tx Hang |
|
3203 * @netdev: network interface device structure |
|
3204 **/ |
|
3205 |
|
3206 static void e1000_tx_timeout(struct net_device *netdev) |
|
3207 { |
|
3208 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3209 |
|
3210 /* Do the reset outside of interrupt context */ |
|
3211 adapter->tx_timeout_count++; |
|
3212 schedule_work(&adapter->reset_task); |
|
3213 } |
|
3214 |
|
3215 static void e1000_reset_task(struct work_struct *work) |
|
3216 { |
|
3217 struct e1000_adapter *adapter = |
|
3218 container_of(work, struct e1000_adapter, reset_task); |
|
3219 |
|
3220 e1000_reinit_safe(adapter); |
|
3221 } |
|
3222 |
|
3223 /** |
|
3224 * e1000_get_stats - Get System Network Statistics |
|
3225 * @netdev: network interface device structure |
|
3226 * |
|
3227 * Returns the address of the device statistics structure. |
|
3228 * The statistics are actually updated from the timer callback. |
|
3229 **/ |
|
3230 |
|
3231 static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
|
3232 { |
|
3233 /* only return the current stats */ |
|
3234 return &netdev->stats; |
|
3235 } |
|
3236 |
|
3237 /** |
|
3238 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3239 * @netdev: network interface device structure |
|
3240 * @new_mtu: new value for maximum frame size |
|
3241 * |
|
3242 * Returns 0 on success, negative on failure |
|
3243 **/ |
|
3244 |
|
3245 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3246 { |
|
3247 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3248 struct e1000_hw *hw = &adapter->hw; |
|
3249 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3250 |
|
3251 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3252 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3253 e_err(probe, "Invalid MTU setting\n"); |
|
3254 return -EINVAL; |
|
3255 } |
|
3256 |
|
3257 /* Adapter-specific max frame size limits. */ |
|
3258 switch (hw->mac_type) { |
|
3259 case e1000_undefined ... e1000_82542_rev2_1: |
|
3260 if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
|
3261 e_err(probe, "Jumbo Frames not supported.\n"); |
|
3262 return -EINVAL; |
|
3263 } |
|
3264 break; |
|
3265 default: |
|
3266 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3267 break; |
|
3268 } |
|
3269 |
|
3270 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
3271 msleep(1); |
|
3272 /* e1000_down has a dependency on max_frame_size */ |
|
3273 hw->max_frame_size = max_frame; |
|
3274 if (netif_running(netdev)) |
|
3275 e1000_down(adapter); |
|
3276 |
|
3277 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3278 * means we reserve 2 more, this pushes us to allocate from the next |
|
3279 * larger slab size. |
|
3280 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
3281 * however with the new *_jumbo_rx* routines, jumbo receives will use |
|
3282 * fragmented skbs */ |
|
3283 |
|
3284 if (max_frame <= E1000_RXBUFFER_2048) |
|
3285 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3286 else |
|
3287 #if (PAGE_SIZE >= E1000_RXBUFFER_16384) |
|
3288 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3289 #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
|
3290 adapter->rx_buffer_len = PAGE_SIZE; |
|
3291 #endif |
|
3292 |
|
3293 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3294 if (!hw->tbi_compatibility_on && |
|
3295 ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
|
3296 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3297 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3298 |
|
3299 pr_info("%s changing MTU from %d to %d\n", |
|
3300 netdev->name, netdev->mtu, new_mtu); |
|
3301 netdev->mtu = new_mtu; |
|
3302 |
|
3303 if (netif_running(netdev)) |
|
3304 e1000_up(adapter); |
|
3305 else |
|
3306 e1000_reset(adapter); |
|
3307 |
|
3308 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
3309 |
|
3310 return 0; |
|
3311 } |
|
3312 |
|
3313 /** |
|
3314 * e1000_update_stats - Update the board statistics counters |
|
3315 * @adapter: board private structure |
|
3316 **/ |
|
3317 |
|
3318 void e1000_update_stats(struct e1000_adapter *adapter) |
|
3319 { |
|
3320 struct net_device *netdev = adapter->netdev; |
|
3321 struct e1000_hw *hw = &adapter->hw; |
|
3322 struct pci_dev *pdev = adapter->pdev; |
|
3323 unsigned long flags; |
|
3324 u16 phy_tmp; |
|
3325 |
|
3326 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3327 |
|
3328 /* |
|
3329 * Prevent stats update while adapter is being reset, or if the pci |
|
3330 * connection is down. |
|
3331 */ |
|
3332 if (adapter->link_speed == 0) |
|
3333 return; |
|
3334 if (pci_channel_offline(pdev)) |
|
3335 return; |
|
3336 |
|
3337 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3338 |
|
3339 /* these counters are modified from e1000_tbi_adjust_stats, |
|
3340 * called from the interrupt context, so they must only |
|
3341 * be written while holding adapter->stats_lock |
|
3342 */ |
|
3343 |
|
3344 adapter->stats.crcerrs += er32(CRCERRS); |
|
3345 adapter->stats.gprc += er32(GPRC); |
|
3346 adapter->stats.gorcl += er32(GORCL); |
|
3347 adapter->stats.gorch += er32(GORCH); |
|
3348 adapter->stats.bprc += er32(BPRC); |
|
3349 adapter->stats.mprc += er32(MPRC); |
|
3350 adapter->stats.roc += er32(ROC); |
|
3351 |
|
3352 adapter->stats.prc64 += er32(PRC64); |
|
3353 adapter->stats.prc127 += er32(PRC127); |
|
3354 adapter->stats.prc255 += er32(PRC255); |
|
3355 adapter->stats.prc511 += er32(PRC511); |
|
3356 adapter->stats.prc1023 += er32(PRC1023); |
|
3357 adapter->stats.prc1522 += er32(PRC1522); |
|
3358 |
|
3359 adapter->stats.symerrs += er32(SYMERRS); |
|
3360 adapter->stats.mpc += er32(MPC); |
|
3361 adapter->stats.scc += er32(SCC); |
|
3362 adapter->stats.ecol += er32(ECOL); |
|
3363 adapter->stats.mcc += er32(MCC); |
|
3364 adapter->stats.latecol += er32(LATECOL); |
|
3365 adapter->stats.dc += er32(DC); |
|
3366 adapter->stats.sec += er32(SEC); |
|
3367 adapter->stats.rlec += er32(RLEC); |
|
3368 adapter->stats.xonrxc += er32(XONRXC); |
|
3369 adapter->stats.xontxc += er32(XONTXC); |
|
3370 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
3371 adapter->stats.xofftxc += er32(XOFFTXC); |
|
3372 adapter->stats.fcruc += er32(FCRUC); |
|
3373 adapter->stats.gptc += er32(GPTC); |
|
3374 adapter->stats.gotcl += er32(GOTCL); |
|
3375 adapter->stats.gotch += er32(GOTCH); |
|
3376 adapter->stats.rnbc += er32(RNBC); |
|
3377 adapter->stats.ruc += er32(RUC); |
|
3378 adapter->stats.rfc += er32(RFC); |
|
3379 adapter->stats.rjc += er32(RJC); |
|
3380 adapter->stats.torl += er32(TORL); |
|
3381 adapter->stats.torh += er32(TORH); |
|
3382 adapter->stats.totl += er32(TOTL); |
|
3383 adapter->stats.toth += er32(TOTH); |
|
3384 adapter->stats.tpr += er32(TPR); |
|
3385 |
|
3386 adapter->stats.ptc64 += er32(PTC64); |
|
3387 adapter->stats.ptc127 += er32(PTC127); |
|
3388 adapter->stats.ptc255 += er32(PTC255); |
|
3389 adapter->stats.ptc511 += er32(PTC511); |
|
3390 adapter->stats.ptc1023 += er32(PTC1023); |
|
3391 adapter->stats.ptc1522 += er32(PTC1522); |
|
3392 |
|
3393 adapter->stats.mptc += er32(MPTC); |
|
3394 adapter->stats.bptc += er32(BPTC); |
|
3395 |
|
3396 /* used for adaptive IFS */ |
|
3397 |
|
3398 hw->tx_packet_delta = er32(TPT); |
|
3399 adapter->stats.tpt += hw->tx_packet_delta; |
|
3400 hw->collision_delta = er32(COLC); |
|
3401 adapter->stats.colc += hw->collision_delta; |
|
3402 |
|
3403 if (hw->mac_type >= e1000_82543) { |
|
3404 adapter->stats.algnerrc += er32(ALGNERRC); |
|
3405 adapter->stats.rxerrc += er32(RXERRC); |
|
3406 adapter->stats.tncrs += er32(TNCRS); |
|
3407 adapter->stats.cexterr += er32(CEXTERR); |
|
3408 adapter->stats.tsctc += er32(TSCTC); |
|
3409 adapter->stats.tsctfc += er32(TSCTFC); |
|
3410 } |
|
3411 |
|
3412 /* Fill out the OS statistics structure */ |
|
3413 netdev->stats.multicast = adapter->stats.mprc; |
|
3414 netdev->stats.collisions = adapter->stats.colc; |
|
3415 |
|
3416 /* Rx Errors */ |
|
3417 |
|
3418 /* RLEC on some newer hardware can be incorrect so build |
|
3419 * our own version based on RUC and ROC */ |
|
3420 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
3421 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3422 adapter->stats.ruc + adapter->stats.roc + |
|
3423 adapter->stats.cexterr; |
|
3424 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3425 netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
|
3426 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3427 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3428 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
3429 |
|
3430 /* Tx Errors */ |
|
3431 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3432 netdev->stats.tx_errors = adapter->stats.txerrc; |
|
3433 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
3434 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
3435 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3436 if (hw->bad_tx_carr_stats_fd && |
|
3437 adapter->link_duplex == FULL_DUPLEX) { |
|
3438 netdev->stats.tx_carrier_errors = 0; |
|
3439 adapter->stats.tncrs = 0; |
|
3440 } |
|
3441 |
|
3442 /* Tx Dropped needs to be maintained elsewhere */ |
|
3443 |
|
3444 /* Phy Stats */ |
|
3445 if (hw->media_type == e1000_media_type_copper) { |
|
3446 if ((adapter->link_speed == SPEED_1000) && |
|
3447 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3448 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3449 adapter->phy_stats.idle_errors += phy_tmp; |
|
3450 } |
|
3451 |
|
3452 if ((hw->mac_type <= e1000_82546) && |
|
3453 (hw->phy_type == e1000_phy_m88) && |
|
3454 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3455 adapter->phy_stats.receive_errors += phy_tmp; |
|
3456 } |
|
3457 |
|
3458 /* Management Stats */ |
|
3459 if (hw->has_smbus) { |
|
3460 adapter->stats.mgptc += er32(MGTPTC); |
|
3461 adapter->stats.mgprc += er32(MGTPRC); |
|
3462 adapter->stats.mgpdc += er32(MGTPDC); |
|
3463 } |
|
3464 |
|
3465 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3466 } |
|
3467 |
|
3468 /** |
|
3469 * e1000_intr - Interrupt Handler |
|
3470 * @irq: interrupt number |
|
3471 * @data: pointer to a network interface device structure |
|
3472 **/ |
|
3473 |
|
3474 static irqreturn_t e1000_intr(int irq, void *data) |
|
3475 { |
|
3476 struct net_device *netdev = data; |
|
3477 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3478 struct e1000_hw *hw = &adapter->hw; |
|
3479 u32 icr = er32(ICR); |
|
3480 |
|
3481 if (unlikely((!icr))) |
|
3482 return IRQ_NONE; /* Not our interrupt */ |
|
3483 |
|
3484 /* |
|
3485 * we might have caused the interrupt, but the above |
|
3486 * read cleared it, and just in case the driver is |
|
3487 * down there is nothing to do so return handled |
|
3488 */ |
|
3489 if (unlikely(test_bit(__E1000_DOWN, &adapter->flags))) |
|
3490 return IRQ_HANDLED; |
|
3491 |
|
3492 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3493 hw->get_link_status = 1; |
|
3494 /* guard against interrupt when we're going down */ |
|
3495 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3496 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3497 } |
|
3498 |
|
3499 /* disable interrupts, without the synchronize_irq bit */ |
|
3500 ew32(IMC, ~0); |
|
3501 E1000_WRITE_FLUSH(); |
|
3502 |
|
3503 if (likely(napi_schedule_prep(&adapter->napi))) { |
|
3504 adapter->total_tx_bytes = 0; |
|
3505 adapter->total_tx_packets = 0; |
|
3506 adapter->total_rx_bytes = 0; |
|
3507 adapter->total_rx_packets = 0; |
|
3508 __napi_schedule(&adapter->napi); |
|
3509 } else { |
|
3510 /* this really should not happen! if it does it is basically a |
|
3511 * bug, but not a hard error, so enable ints and continue */ |
|
3512 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3513 e1000_irq_enable(adapter); |
|
3514 } |
|
3515 |
|
3516 return IRQ_HANDLED; |
|
3517 } |
|
3518 |
|
3519 /** |
|
3520 * e1000_clean - NAPI Rx polling callback |
|
3521 * @adapter: board private structure |
|
3522 **/ |
|
3523 static int e1000_clean(struct napi_struct *napi, int budget) |
|
3524 { |
|
3525 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
3526 int tx_clean_complete = 0, work_done = 0; |
|
3527 |
|
3528 tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
|
3529 |
|
3530 adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
|
3531 |
|
3532 if (!tx_clean_complete) |
|
3533 work_done = budget; |
|
3534 |
|
3535 /* If budget not fully consumed, exit the polling mode */ |
|
3536 if (work_done < budget) { |
|
3537 if (likely(adapter->itr_setting & 3)) |
|
3538 e1000_set_itr(adapter); |
|
3539 napi_complete(napi); |
|
3540 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3541 e1000_irq_enable(adapter); |
|
3542 } |
|
3543 |
|
3544 return work_done; |
|
3545 } |
|
3546 |
|
3547 /** |
|
3548 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
3549 * @adapter: board private structure |
|
3550 **/ |
|
3551 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
3552 struct e1000_tx_ring *tx_ring) |
|
3553 { |
|
3554 struct e1000_hw *hw = &adapter->hw; |
|
3555 struct net_device *netdev = adapter->netdev; |
|
3556 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
3557 struct e1000_buffer *buffer_info; |
|
3558 unsigned int i, eop; |
|
3559 unsigned int count = 0; |
|
3560 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
3561 |
|
3562 i = tx_ring->next_to_clean; |
|
3563 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3564 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3565 |
|
3566 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
3567 (count < tx_ring->count)) { |
|
3568 bool cleaned = false; |
|
3569 rmb(); /* read buffer_info after eop_desc */ |
|
3570 for ( ; !cleaned; count++) { |
|
3571 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3572 buffer_info = &tx_ring->buffer_info[i]; |
|
3573 cleaned = (i == eop); |
|
3574 |
|
3575 if (cleaned) { |
|
3576 struct sk_buff *skb = buffer_info->skb; |
|
3577 unsigned int segs, bytecount; |
|
3578 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
3579 /* multiply data chunks by size of headers */ |
|
3580 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
3581 skb->len; |
|
3582 total_tx_packets += segs; |
|
3583 total_tx_bytes += bytecount; |
|
3584 } |
|
3585 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
3586 tx_desc->upper.data = 0; |
|
3587 |
|
3588 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3589 } |
|
3590 |
|
3591 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3592 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3593 } |
|
3594 |
|
3595 tx_ring->next_to_clean = i; |
|
3596 |
|
3597 #define TX_WAKE_THRESHOLD 32 |
|
3598 if (unlikely(count && netif_carrier_ok(netdev) && |
|
3599 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
3600 /* Make sure that anybody stopping the queue after this |
|
3601 * sees the new next_to_clean. |
|
3602 */ |
|
3603 smp_mb(); |
|
3604 |
|
3605 if (netif_queue_stopped(netdev) && |
|
3606 !(test_bit(__E1000_DOWN, &adapter->flags))) { |
|
3607 netif_wake_queue(netdev); |
|
3608 ++adapter->restart_queue; |
|
3609 } |
|
3610 } |
|
3611 |
|
3612 if (adapter->detect_tx_hung) { |
|
3613 /* Detect a transmit hang in hardware, this serializes the |
|
3614 * check with the clearing of time_stamp and movement of i */ |
|
3615 adapter->detect_tx_hung = false; |
|
3616 if (tx_ring->buffer_info[eop].time_stamp && |
|
3617 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + |
|
3618 (adapter->tx_timeout_factor * HZ)) && |
|
3619 !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
|
3620 |
|
3621 /* detected Tx unit hang */ |
|
3622 e_err(drv, "Detected Tx Unit Hang\n" |
|
3623 " Tx Queue <%lu>\n" |
|
3624 " TDH <%x>\n" |
|
3625 " TDT <%x>\n" |
|
3626 " next_to_use <%x>\n" |
|
3627 " next_to_clean <%x>\n" |
|
3628 "buffer_info[next_to_clean]\n" |
|
3629 " time_stamp <%lx>\n" |
|
3630 " next_to_watch <%x>\n" |
|
3631 " jiffies <%lx>\n" |
|
3632 " next_to_watch.status <%x>\n", |
|
3633 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
3634 sizeof(struct e1000_tx_ring)), |
|
3635 readl(hw->hw_addr + tx_ring->tdh), |
|
3636 readl(hw->hw_addr + tx_ring->tdt), |
|
3637 tx_ring->next_to_use, |
|
3638 tx_ring->next_to_clean, |
|
3639 tx_ring->buffer_info[eop].time_stamp, |
|
3640 eop, |
|
3641 jiffies, |
|
3642 eop_desc->upper.fields.status); |
|
3643 netif_stop_queue(netdev); |
|
3644 } |
|
3645 } |
|
3646 adapter->total_tx_bytes += total_tx_bytes; |
|
3647 adapter->total_tx_packets += total_tx_packets; |
|
3648 netdev->stats.tx_bytes += total_tx_bytes; |
|
3649 netdev->stats.tx_packets += total_tx_packets; |
|
3650 return count < tx_ring->count; |
|
3651 } |
|
3652 |
|
3653 /** |
|
3654 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
3655 * @adapter: board private structure |
|
3656 * @status_err: receive descriptor status and error fields |
|
3657 * @csum: receive descriptor csum field |
|
3658 * @sk_buff: socket buffer with received data |
|
3659 **/ |
|
3660 |
|
3661 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
3662 u32 csum, struct sk_buff *skb) |
|
3663 { |
|
3664 struct e1000_hw *hw = &adapter->hw; |
|
3665 u16 status = (u16)status_err; |
|
3666 u8 errors = (u8)(status_err >> 24); |
|
3667 |
|
3668 skb_checksum_none_assert(skb); |
|
3669 |
|
3670 /* 82543 or newer only */ |
|
3671 if (unlikely(hw->mac_type < e1000_82543)) return; |
|
3672 /* Ignore Checksum bit is set */ |
|
3673 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
3674 /* TCP/UDP checksum error bit is set */ |
|
3675 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
3676 /* let the stack verify checksum errors */ |
|
3677 adapter->hw_csum_err++; |
|
3678 return; |
|
3679 } |
|
3680 /* TCP/UDP Checksum has not been calculated */ |
|
3681 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
3682 return; |
|
3683 |
|
3684 /* It must be a TCP or UDP packet with a valid checksum */ |
|
3685 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
3686 /* TCP checksum is good */ |
|
3687 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
3688 } |
|
3689 adapter->hw_csum_good++; |
|
3690 } |
|
3691 |
|
3692 /** |
|
3693 * e1000_consume_page - helper function |
|
3694 **/ |
|
3695 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
3696 u16 length) |
|
3697 { |
|
3698 bi->page = NULL; |
|
3699 skb->len += length; |
|
3700 skb->data_len += length; |
|
3701 skb->truesize += length; |
|
3702 } |
|
3703 |
|
3704 /** |
|
3705 * e1000_receive_skb - helper function to handle rx indications |
|
3706 * @adapter: board private structure |
|
3707 * @status: descriptor status field as written by hardware |
|
3708 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
3709 * @skb: pointer to sk_buff to be indicated to stack |
|
3710 */ |
|
3711 static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, |
|
3712 __le16 vlan, struct sk_buff *skb) |
|
3713 { |
|
3714 skb->protocol = eth_type_trans(skb, adapter->netdev); |
|
3715 |
|
3716 if ((unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP)))) |
|
3717 vlan_gro_receive(&adapter->napi, adapter->vlgrp, |
|
3718 le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK, |
|
3719 skb); |
|
3720 else |
|
3721 napi_gro_receive(&adapter->napi, skb); |
|
3722 } |
|
3723 |
|
3724 /** |
|
3725 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
3726 * @adapter: board private structure |
|
3727 * @rx_ring: ring to clean |
|
3728 * @work_done: amount of napi work completed this call |
|
3729 * @work_to_do: max amount of work allowed for this call to do |
|
3730 * |
|
3731 * the return value indicates whether actual cleaning was done, there |
|
3732 * is no guarantee that everything was cleaned |
|
3733 */ |
|
3734 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
|
3735 struct e1000_rx_ring *rx_ring, |
|
3736 int *work_done, int work_to_do) |
|
3737 { |
|
3738 struct e1000_hw *hw = &adapter->hw; |
|
3739 struct net_device *netdev = adapter->netdev; |
|
3740 struct pci_dev *pdev = adapter->pdev; |
|
3741 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3742 struct e1000_buffer *buffer_info, *next_buffer; |
|
3743 unsigned long irq_flags; |
|
3744 u32 length; |
|
3745 unsigned int i; |
|
3746 int cleaned_count = 0; |
|
3747 bool cleaned = false; |
|
3748 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3749 |
|
3750 i = rx_ring->next_to_clean; |
|
3751 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3752 buffer_info = &rx_ring->buffer_info[i]; |
|
3753 |
|
3754 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3755 struct sk_buff *skb; |
|
3756 u8 status; |
|
3757 |
|
3758 if (*work_done >= work_to_do) |
|
3759 break; |
|
3760 (*work_done)++; |
|
3761 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
3762 |
|
3763 status = rx_desc->status; |
|
3764 skb = buffer_info->skb; |
|
3765 buffer_info->skb = NULL; |
|
3766 |
|
3767 if (++i == rx_ring->count) i = 0; |
|
3768 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3769 prefetch(next_rxd); |
|
3770 |
|
3771 next_buffer = &rx_ring->buffer_info[i]; |
|
3772 |
|
3773 cleaned = true; |
|
3774 cleaned_count++; |
|
3775 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
3776 buffer_info->length, DMA_FROM_DEVICE); |
|
3777 buffer_info->dma = 0; |
|
3778 |
|
3779 length = le16_to_cpu(rx_desc->length); |
|
3780 |
|
3781 /* errors is only valid for DD + EOP descriptors */ |
|
3782 if (unlikely((status & E1000_RXD_STAT_EOP) && |
|
3783 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { |
|
3784 u8 last_byte = *(skb->data + length - 1); |
|
3785 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
3786 last_byte)) { |
|
3787 spin_lock_irqsave(&adapter->stats_lock, |
|
3788 irq_flags); |
|
3789 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
3790 length, skb->data); |
|
3791 spin_unlock_irqrestore(&adapter->stats_lock, |
|
3792 irq_flags); |
|
3793 length--; |
|
3794 } else { |
|
3795 /* recycle both page and skb */ |
|
3796 buffer_info->skb = skb; |
|
3797 /* an error means any chain goes out the window |
|
3798 * too */ |
|
3799 if (rx_ring->rx_skb_top) |
|
3800 dev_kfree_skb(rx_ring->rx_skb_top); |
|
3801 rx_ring->rx_skb_top = NULL; |
|
3802 goto next_desc; |
|
3803 } |
|
3804 } |
|
3805 |
|
3806 #define rxtop rx_ring->rx_skb_top |
|
3807 if (!(status & E1000_RXD_STAT_EOP)) { |
|
3808 /* this descriptor is only the beginning (or middle) */ |
|
3809 if (!rxtop) { |
|
3810 /* this is the beginning of a chain */ |
|
3811 rxtop = skb; |
|
3812 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
3813 0, length); |
|
3814 } else { |
|
3815 /* this is the middle of a chain */ |
|
3816 skb_fill_page_desc(rxtop, |
|
3817 skb_shinfo(rxtop)->nr_frags, |
|
3818 buffer_info->page, 0, length); |
|
3819 /* re-use the skb, only consumed the page */ |
|
3820 buffer_info->skb = skb; |
|
3821 } |
|
3822 e1000_consume_page(buffer_info, rxtop, length); |
|
3823 goto next_desc; |
|
3824 } else { |
|
3825 if (rxtop) { |
|
3826 /* end of the chain */ |
|
3827 skb_fill_page_desc(rxtop, |
|
3828 skb_shinfo(rxtop)->nr_frags, |
|
3829 buffer_info->page, 0, length); |
|
3830 /* re-use the current skb, we only consumed the |
|
3831 * page */ |
|
3832 buffer_info->skb = skb; |
|
3833 skb = rxtop; |
|
3834 rxtop = NULL; |
|
3835 e1000_consume_page(buffer_info, skb, length); |
|
3836 } else { |
|
3837 /* no chain, got EOP, this buf is the packet |
|
3838 * copybreak to save the put_page/alloc_page */ |
|
3839 if (length <= copybreak && |
|
3840 skb_tailroom(skb) >= length) { |
|
3841 u8 *vaddr; |
|
3842 vaddr = kmap_atomic(buffer_info->page, |
|
3843 KM_SKB_DATA_SOFTIRQ); |
|
3844 memcpy(skb_tail_pointer(skb), vaddr, length); |
|
3845 kunmap_atomic(vaddr, |
|
3846 KM_SKB_DATA_SOFTIRQ); |
|
3847 /* re-use the page, so don't erase |
|
3848 * buffer_info->page */ |
|
3849 skb_put(skb, length); |
|
3850 } else { |
|
3851 skb_fill_page_desc(skb, 0, |
|
3852 buffer_info->page, 0, |
|
3853 length); |
|
3854 e1000_consume_page(buffer_info, skb, |
|
3855 length); |
|
3856 } |
|
3857 } |
|
3858 } |
|
3859 |
|
3860 /* Receive Checksum Offload XXX recompute due to CRC strip? */ |
|
3861 e1000_rx_checksum(adapter, |
|
3862 (u32)(status) | |
|
3863 ((u32)(rx_desc->errors) << 24), |
|
3864 le16_to_cpu(rx_desc->csum), skb); |
|
3865 |
|
3866 pskb_trim(skb, skb->len - 4); |
|
3867 |
|
3868 /* probably a little skewed due to removing CRC */ |
|
3869 total_rx_bytes += skb->len; |
|
3870 total_rx_packets++; |
|
3871 |
|
3872 /* eth type trans needs skb->data to point to something */ |
|
3873 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
3874 e_err(drv, "pskb_may_pull failed.\n"); |
|
3875 dev_kfree_skb(skb); |
|
3876 goto next_desc; |
|
3877 } |
|
3878 |
|
3879 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
3880 |
|
3881 next_desc: |
|
3882 rx_desc->status = 0; |
|
3883 |
|
3884 /* return some buffers to hardware, one at a time is too slow */ |
|
3885 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
3886 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3887 cleaned_count = 0; |
|
3888 } |
|
3889 |
|
3890 /* use prefetched values */ |
|
3891 rx_desc = next_rxd; |
|
3892 buffer_info = next_buffer; |
|
3893 } |
|
3894 rx_ring->next_to_clean = i; |
|
3895 |
|
3896 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
3897 if (cleaned_count) |
|
3898 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
3899 |
|
3900 adapter->total_rx_packets += total_rx_packets; |
|
3901 adapter->total_rx_bytes += total_rx_bytes; |
|
3902 netdev->stats.rx_bytes += total_rx_bytes; |
|
3903 netdev->stats.rx_packets += total_rx_packets; |
|
3904 return cleaned; |
|
3905 } |
|
3906 |
|
3907 /* |
|
3908 * this should improve performance for small packets with large amounts |
|
3909 * of reassembly being done in the stack |
|
3910 */ |
|
3911 static void e1000_check_copybreak(struct net_device *netdev, |
|
3912 struct e1000_buffer *buffer_info, |
|
3913 u32 length, struct sk_buff **skb) |
|
3914 { |
|
3915 struct sk_buff *new_skb; |
|
3916 |
|
3917 if (length > copybreak) |
|
3918 return; |
|
3919 |
|
3920 new_skb = netdev_alloc_skb_ip_align(netdev, length); |
|
3921 if (!new_skb) |
|
3922 return; |
|
3923 |
|
3924 skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN, |
|
3925 (*skb)->data - NET_IP_ALIGN, |
|
3926 length + NET_IP_ALIGN); |
|
3927 /* save the skb in buffer_info as good */ |
|
3928 buffer_info->skb = *skb; |
|
3929 *skb = new_skb; |
|
3930 } |
|
3931 |
|
3932 /** |
|
3933 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
3934 * @adapter: board private structure |
|
3935 * @rx_ring: ring to clean |
|
3936 * @work_done: amount of napi work completed this call |
|
3937 * @work_to_do: max amount of work allowed for this call to do |
|
3938 */ |
|
3939 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
3940 struct e1000_rx_ring *rx_ring, |
|
3941 int *work_done, int work_to_do) |
|
3942 { |
|
3943 struct e1000_hw *hw = &adapter->hw; |
|
3944 struct net_device *netdev = adapter->netdev; |
|
3945 struct pci_dev *pdev = adapter->pdev; |
|
3946 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3947 struct e1000_buffer *buffer_info, *next_buffer; |
|
3948 unsigned long flags; |
|
3949 u32 length; |
|
3950 unsigned int i; |
|
3951 int cleaned_count = 0; |
|
3952 bool cleaned = false; |
|
3953 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3954 |
|
3955 i = rx_ring->next_to_clean; |
|
3956 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3957 buffer_info = &rx_ring->buffer_info[i]; |
|
3958 |
|
3959 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3960 struct sk_buff *skb; |
|
3961 u8 status; |
|
3962 |
|
3963 if (*work_done >= work_to_do) |
|
3964 break; |
|
3965 (*work_done)++; |
|
3966 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
3967 |
|
3968 status = rx_desc->status; |
|
3969 skb = buffer_info->skb; |
|
3970 buffer_info->skb = NULL; |
|
3971 |
|
3972 prefetch(skb->data - NET_IP_ALIGN); |
|
3973 |
|
3974 if (++i == rx_ring->count) i = 0; |
|
3975 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3976 prefetch(next_rxd); |
|
3977 |
|
3978 next_buffer = &rx_ring->buffer_info[i]; |
|
3979 |
|
3980 cleaned = true; |
|
3981 cleaned_count++; |
|
3982 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
3983 buffer_info->length, DMA_FROM_DEVICE); |
|
3984 buffer_info->dma = 0; |
|
3985 |
|
3986 length = le16_to_cpu(rx_desc->length); |
|
3987 /* !EOP means multiple descriptors were used to store a single |
|
3988 * packet, if thats the case we need to toss it. In fact, we |
|
3989 * to toss every packet with the EOP bit clear and the next |
|
3990 * frame that _does_ have the EOP bit set, as it is by |
|
3991 * definition only a frame fragment |
|
3992 */ |
|
3993 if (unlikely(!(status & E1000_RXD_STAT_EOP))) |
|
3994 adapter->discarding = true; |
|
3995 |
|
3996 if (adapter->discarding) { |
|
3997 /* All receives must fit into a single buffer */ |
|
3998 e_dbg("Receive packet consumed multiple buffers\n"); |
|
3999 /* recycle */ |
|
4000 buffer_info->skb = skb; |
|
4001 if (status & E1000_RXD_STAT_EOP) |
|
4002 adapter->discarding = false; |
|
4003 goto next_desc; |
|
4004 } |
|
4005 |
|
4006 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
4007 u8 last_byte = *(skb->data + length - 1); |
|
4008 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
4009 last_byte)) { |
|
4010 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4011 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
4012 length, skb->data); |
|
4013 spin_unlock_irqrestore(&adapter->stats_lock, |
|
4014 flags); |
|
4015 length--; |
|
4016 } else { |
|
4017 /* recycle */ |
|
4018 buffer_info->skb = skb; |
|
4019 goto next_desc; |
|
4020 } |
|
4021 } |
|
4022 |
|
4023 /* adjust length to remove Ethernet CRC, this must be |
|
4024 * done after the TBI_ACCEPT workaround above */ |
|
4025 length -= 4; |
|
4026 |
|
4027 /* probably a little skewed due to removing CRC */ |
|
4028 total_rx_bytes += length; |
|
4029 total_rx_packets++; |
|
4030 |
|
4031 e1000_check_copybreak(netdev, buffer_info, length, &skb); |
|
4032 |
|
4033 skb_put(skb, length); |
|
4034 |
|
4035 /* Receive Checksum Offload */ |
|
4036 e1000_rx_checksum(adapter, |
|
4037 (u32)(status) | |
|
4038 ((u32)(rx_desc->errors) << 24), |
|
4039 le16_to_cpu(rx_desc->csum), skb); |
|
4040 |
|
4041 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
4042 |
|
4043 next_desc: |
|
4044 rx_desc->status = 0; |
|
4045 |
|
4046 /* return some buffers to hardware, one at a time is too slow */ |
|
4047 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4048 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4049 cleaned_count = 0; |
|
4050 } |
|
4051 |
|
4052 /* use prefetched values */ |
|
4053 rx_desc = next_rxd; |
|
4054 buffer_info = next_buffer; |
|
4055 } |
|
4056 rx_ring->next_to_clean = i; |
|
4057 |
|
4058 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4059 if (cleaned_count) |
|
4060 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4061 |
|
4062 adapter->total_rx_packets += total_rx_packets; |
|
4063 adapter->total_rx_bytes += total_rx_bytes; |
|
4064 netdev->stats.rx_bytes += total_rx_bytes; |
|
4065 netdev->stats.rx_packets += total_rx_packets; |
|
4066 return cleaned; |
|
4067 } |
|
4068 |
|
4069 /** |
|
4070 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
4071 * @adapter: address of board private structure |
|
4072 * @rx_ring: pointer to receive ring structure |
|
4073 * @cleaned_count: number of buffers to allocate this pass |
|
4074 **/ |
|
4075 |
|
4076 static void |
|
4077 e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
|
4078 struct e1000_rx_ring *rx_ring, int cleaned_count) |
|
4079 { |
|
4080 struct net_device *netdev = adapter->netdev; |
|
4081 struct pci_dev *pdev = adapter->pdev; |
|
4082 struct e1000_rx_desc *rx_desc; |
|
4083 struct e1000_buffer *buffer_info; |
|
4084 struct sk_buff *skb; |
|
4085 unsigned int i; |
|
4086 unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
|
4087 |
|
4088 i = rx_ring->next_to_use; |
|
4089 buffer_info = &rx_ring->buffer_info[i]; |
|
4090 |
|
4091 while (cleaned_count--) { |
|
4092 skb = buffer_info->skb; |
|
4093 if (skb) { |
|
4094 skb_trim(skb, 0); |
|
4095 goto check_page; |
|
4096 } |
|
4097 |
|
4098 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4099 if (unlikely(!skb)) { |
|
4100 /* Better luck next round */ |
|
4101 adapter->alloc_rx_buff_failed++; |
|
4102 break; |
|
4103 } |
|
4104 |
|
4105 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4106 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4107 struct sk_buff *oldskb = skb; |
|
4108 e_err(rx_err, "skb align check failed: %u bytes at " |
|
4109 "%p\n", bufsz, skb->data); |
|
4110 /* Try again, without freeing the previous */ |
|
4111 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4112 /* Failed allocation, critical failure */ |
|
4113 if (!skb) { |
|
4114 dev_kfree_skb(oldskb); |
|
4115 adapter->alloc_rx_buff_failed++; |
|
4116 break; |
|
4117 } |
|
4118 |
|
4119 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4120 /* give up */ |
|
4121 dev_kfree_skb(skb); |
|
4122 dev_kfree_skb(oldskb); |
|
4123 break; /* while (cleaned_count--) */ |
|
4124 } |
|
4125 |
|
4126 /* Use new allocation */ |
|
4127 dev_kfree_skb(oldskb); |
|
4128 } |
|
4129 buffer_info->skb = skb; |
|
4130 buffer_info->length = adapter->rx_buffer_len; |
|
4131 check_page: |
|
4132 /* allocate a new page if necessary */ |
|
4133 if (!buffer_info->page) { |
|
4134 buffer_info->page = alloc_page(GFP_ATOMIC); |
|
4135 if (unlikely(!buffer_info->page)) { |
|
4136 adapter->alloc_rx_buff_failed++; |
|
4137 break; |
|
4138 } |
|
4139 } |
|
4140 |
|
4141 if (!buffer_info->dma) { |
|
4142 buffer_info->dma = dma_map_page(&pdev->dev, |
|
4143 buffer_info->page, 0, |
|
4144 buffer_info->length, |
|
4145 DMA_FROM_DEVICE); |
|
4146 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
4147 put_page(buffer_info->page); |
|
4148 dev_kfree_skb(skb); |
|
4149 buffer_info->page = NULL; |
|
4150 buffer_info->skb = NULL; |
|
4151 buffer_info->dma = 0; |
|
4152 adapter->alloc_rx_buff_failed++; |
|
4153 break; /* while !buffer_info->skb */ |
|
4154 } |
|
4155 } |
|
4156 |
|
4157 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4158 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4159 |
|
4160 if (unlikely(++i == rx_ring->count)) |
|
4161 i = 0; |
|
4162 buffer_info = &rx_ring->buffer_info[i]; |
|
4163 } |
|
4164 |
|
4165 if (likely(rx_ring->next_to_use != i)) { |
|
4166 rx_ring->next_to_use = i; |
|
4167 if (unlikely(i-- == 0)) |
|
4168 i = (rx_ring->count - 1); |
|
4169 |
|
4170 /* Force memory writes to complete before letting h/w |
|
4171 * know there are new descriptors to fetch. (Only |
|
4172 * applicable for weak-ordered memory model archs, |
|
4173 * such as IA-64). */ |
|
4174 wmb(); |
|
4175 writel(i, adapter->hw.hw_addr + rx_ring->rdt); |
|
4176 } |
|
4177 } |
|
4178 |
|
4179 /** |
|
4180 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4181 * @adapter: address of board private structure |
|
4182 **/ |
|
4183 |
|
4184 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4185 struct e1000_rx_ring *rx_ring, |
|
4186 int cleaned_count) |
|
4187 { |
|
4188 struct e1000_hw *hw = &adapter->hw; |
|
4189 struct net_device *netdev = adapter->netdev; |
|
4190 struct pci_dev *pdev = adapter->pdev; |
|
4191 struct e1000_rx_desc *rx_desc; |
|
4192 struct e1000_buffer *buffer_info; |
|
4193 struct sk_buff *skb; |
|
4194 unsigned int i; |
|
4195 unsigned int bufsz = adapter->rx_buffer_len; |
|
4196 |
|
4197 i = rx_ring->next_to_use; |
|
4198 buffer_info = &rx_ring->buffer_info[i]; |
|
4199 |
|
4200 while (cleaned_count--) { |
|
4201 skb = buffer_info->skb; |
|
4202 if (skb) { |
|
4203 skb_trim(skb, 0); |
|
4204 goto map_skb; |
|
4205 } |
|
4206 |
|
4207 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4208 if (unlikely(!skb)) { |
|
4209 /* Better luck next round */ |
|
4210 adapter->alloc_rx_buff_failed++; |
|
4211 break; |
|
4212 } |
|
4213 |
|
4214 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4215 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4216 struct sk_buff *oldskb = skb; |
|
4217 e_err(rx_err, "skb align check failed: %u bytes at " |
|
4218 "%p\n", bufsz, skb->data); |
|
4219 /* Try again, without freeing the previous */ |
|
4220 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4221 /* Failed allocation, critical failure */ |
|
4222 if (!skb) { |
|
4223 dev_kfree_skb(oldskb); |
|
4224 adapter->alloc_rx_buff_failed++; |
|
4225 break; |
|
4226 } |
|
4227 |
|
4228 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4229 /* give up */ |
|
4230 dev_kfree_skb(skb); |
|
4231 dev_kfree_skb(oldskb); |
|
4232 adapter->alloc_rx_buff_failed++; |
|
4233 break; /* while !buffer_info->skb */ |
|
4234 } |
|
4235 |
|
4236 /* Use new allocation */ |
|
4237 dev_kfree_skb(oldskb); |
|
4238 } |
|
4239 buffer_info->skb = skb; |
|
4240 buffer_info->length = adapter->rx_buffer_len; |
|
4241 map_skb: |
|
4242 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4243 skb->data, |
|
4244 buffer_info->length, |
|
4245 DMA_FROM_DEVICE); |
|
4246 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
4247 dev_kfree_skb(skb); |
|
4248 buffer_info->skb = NULL; |
|
4249 buffer_info->dma = 0; |
|
4250 adapter->alloc_rx_buff_failed++; |
|
4251 break; /* while !buffer_info->skb */ |
|
4252 } |
|
4253 |
|
4254 /* |
|
4255 * XXX if it was allocated cleanly it will never map to a |
|
4256 * boundary crossing |
|
4257 */ |
|
4258 |
|
4259 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4260 if (!e1000_check_64k_bound(adapter, |
|
4261 (void *)(unsigned long)buffer_info->dma, |
|
4262 adapter->rx_buffer_len)) { |
|
4263 e_err(rx_err, "dma align check failed: %u bytes at " |
|
4264 "%p\n", adapter->rx_buffer_len, |
|
4265 (void *)(unsigned long)buffer_info->dma); |
|
4266 dev_kfree_skb(skb); |
|
4267 buffer_info->skb = NULL; |
|
4268 |
|
4269 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
4270 adapter->rx_buffer_len, |
|
4271 DMA_FROM_DEVICE); |
|
4272 buffer_info->dma = 0; |
|
4273 |
|
4274 adapter->alloc_rx_buff_failed++; |
|
4275 break; /* while !buffer_info->skb */ |
|
4276 } |
|
4277 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4278 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4279 |
|
4280 if (unlikely(++i == rx_ring->count)) |
|
4281 i = 0; |
|
4282 buffer_info = &rx_ring->buffer_info[i]; |
|
4283 } |
|
4284 |
|
4285 if (likely(rx_ring->next_to_use != i)) { |
|
4286 rx_ring->next_to_use = i; |
|
4287 if (unlikely(i-- == 0)) |
|
4288 i = (rx_ring->count - 1); |
|
4289 |
|
4290 /* Force memory writes to complete before letting h/w |
|
4291 * know there are new descriptors to fetch. (Only |
|
4292 * applicable for weak-ordered memory model archs, |
|
4293 * such as IA-64). */ |
|
4294 wmb(); |
|
4295 writel(i, hw->hw_addr + rx_ring->rdt); |
|
4296 } |
|
4297 } |
|
4298 |
|
4299 /** |
|
4300 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4301 * @adapter: |
|
4302 **/ |
|
4303 |
|
4304 static void e1000_smartspeed(struct e1000_adapter *adapter) |
|
4305 { |
|
4306 struct e1000_hw *hw = &adapter->hw; |
|
4307 u16 phy_status; |
|
4308 u16 phy_ctrl; |
|
4309 |
|
4310 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
|
4311 !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4312 return; |
|
4313 |
|
4314 if (adapter->smartspeed == 0) { |
|
4315 /* If Master/Slave config fault is asserted twice, |
|
4316 * we assume back-to-back */ |
|
4317 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4318 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4319 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4320 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4321 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4322 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4323 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4324 e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
|
4325 phy_ctrl); |
|
4326 adapter->smartspeed++; |
|
4327 if (!e1000_phy_setup_autoneg(hw) && |
|
4328 !e1000_read_phy_reg(hw, PHY_CTRL, |
|
4329 &phy_ctrl)) { |
|
4330 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4331 MII_CR_RESTART_AUTO_NEG); |
|
4332 e1000_write_phy_reg(hw, PHY_CTRL, |
|
4333 phy_ctrl); |
|
4334 } |
|
4335 } |
|
4336 return; |
|
4337 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4338 /* If still no link, perhaps using 2/3 pair cable */ |
|
4339 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4340 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4341 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
|
4342 if (!e1000_phy_setup_autoneg(hw) && |
|
4343 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { |
|
4344 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4345 MII_CR_RESTART_AUTO_NEG); |
|
4346 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
|
4347 } |
|
4348 } |
|
4349 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4350 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4351 adapter->smartspeed = 0; |
|
4352 } |
|
4353 |
|
4354 /** |
|
4355 * e1000_ioctl - |
|
4356 * @netdev: |
|
4357 * @ifreq: |
|
4358 * @cmd: |
|
4359 **/ |
|
4360 |
|
4361 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4362 { |
|
4363 switch (cmd) { |
|
4364 case SIOCGMIIPHY: |
|
4365 case SIOCGMIIREG: |
|
4366 case SIOCSMIIREG: |
|
4367 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4368 default: |
|
4369 return -EOPNOTSUPP; |
|
4370 } |
|
4371 } |
|
4372 |
|
4373 /** |
|
4374 * e1000_mii_ioctl - |
|
4375 * @netdev: |
|
4376 * @ifreq: |
|
4377 * @cmd: |
|
4378 **/ |
|
4379 |
|
4380 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
4381 int cmd) |
|
4382 { |
|
4383 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4384 struct e1000_hw *hw = &adapter->hw; |
|
4385 struct mii_ioctl_data *data = if_mii(ifr); |
|
4386 int retval; |
|
4387 u16 mii_reg; |
|
4388 unsigned long flags; |
|
4389 |
|
4390 if (hw->media_type != e1000_media_type_copper) |
|
4391 return -EOPNOTSUPP; |
|
4392 |
|
4393 switch (cmd) { |
|
4394 case SIOCGMIIPHY: |
|
4395 data->phy_id = hw->phy_addr; |
|
4396 break; |
|
4397 case SIOCGMIIREG: |
|
4398 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4399 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
|
4400 &data->val_out)) { |
|
4401 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4402 return -EIO; |
|
4403 } |
|
4404 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4405 break; |
|
4406 case SIOCSMIIREG: |
|
4407 if (data->reg_num & ~(0x1F)) |
|
4408 return -EFAULT; |
|
4409 mii_reg = data->val_in; |
|
4410 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4411 if (e1000_write_phy_reg(hw, data->reg_num, |
|
4412 mii_reg)) { |
|
4413 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4414 return -EIO; |
|
4415 } |
|
4416 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4417 if (hw->media_type == e1000_media_type_copper) { |
|
4418 switch (data->reg_num) { |
|
4419 case PHY_CTRL: |
|
4420 if (mii_reg & MII_CR_POWER_DOWN) |
|
4421 break; |
|
4422 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4423 hw->autoneg = 1; |
|
4424 hw->autoneg_advertised = 0x2F; |
|
4425 } else { |
|
4426 u32 speed; |
|
4427 if (mii_reg & 0x40) |
|
4428 speed = SPEED_1000; |
|
4429 else if (mii_reg & 0x2000) |
|
4430 speed = SPEED_100; |
|
4431 else |
|
4432 speed = SPEED_10; |
|
4433 retval = e1000_set_spd_dplx( |
|
4434 adapter, speed, |
|
4435 ((mii_reg & 0x100) |
|
4436 ? DUPLEX_FULL : |
|
4437 DUPLEX_HALF)); |
|
4438 if (retval) |
|
4439 return retval; |
|
4440 } |
|
4441 if (netif_running(adapter->netdev)) |
|
4442 e1000_reinit_locked(adapter); |
|
4443 else |
|
4444 e1000_reset(adapter); |
|
4445 break; |
|
4446 case M88E1000_PHY_SPEC_CTRL: |
|
4447 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4448 if (e1000_phy_reset(hw)) |
|
4449 return -EIO; |
|
4450 break; |
|
4451 } |
|
4452 } else { |
|
4453 switch (data->reg_num) { |
|
4454 case PHY_CTRL: |
|
4455 if (mii_reg & MII_CR_POWER_DOWN) |
|
4456 break; |
|
4457 if (netif_running(adapter->netdev)) |
|
4458 e1000_reinit_locked(adapter); |
|
4459 else |
|
4460 e1000_reset(adapter); |
|
4461 break; |
|
4462 } |
|
4463 } |
|
4464 break; |
|
4465 default: |
|
4466 return -EOPNOTSUPP; |
|
4467 } |
|
4468 return E1000_SUCCESS; |
|
4469 } |
|
4470 |
|
4471 void e1000_pci_set_mwi(struct e1000_hw *hw) |
|
4472 { |
|
4473 struct e1000_adapter *adapter = hw->back; |
|
4474 int ret_val = pci_set_mwi(adapter->pdev); |
|
4475 |
|
4476 if (ret_val) |
|
4477 e_err(probe, "Error in setting MWI\n"); |
|
4478 } |
|
4479 |
|
4480 void e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
4481 { |
|
4482 struct e1000_adapter *adapter = hw->back; |
|
4483 |
|
4484 pci_clear_mwi(adapter->pdev); |
|
4485 } |
|
4486 |
|
4487 int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
|
4488 { |
|
4489 struct e1000_adapter *adapter = hw->back; |
|
4490 return pcix_get_mmrbc(adapter->pdev); |
|
4491 } |
|
4492 |
|
4493 void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
|
4494 { |
|
4495 struct e1000_adapter *adapter = hw->back; |
|
4496 pcix_set_mmrbc(adapter->pdev, mmrbc); |
|
4497 } |
|
4498 |
|
4499 void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
|
4500 { |
|
4501 outl(value, port); |
|
4502 } |
|
4503 |
|
4504 static void e1000_vlan_rx_register(struct net_device *netdev, |
|
4505 struct vlan_group *grp) |
|
4506 { |
|
4507 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4508 struct e1000_hw *hw = &adapter->hw; |
|
4509 u32 ctrl, rctl; |
|
4510 |
|
4511 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4512 e1000_irq_disable(adapter); |
|
4513 adapter->vlgrp = grp; |
|
4514 |
|
4515 if (grp) { |
|
4516 /* enable VLAN tag insert/strip */ |
|
4517 ctrl = er32(CTRL); |
|
4518 ctrl |= E1000_CTRL_VME; |
|
4519 ew32(CTRL, ctrl); |
|
4520 |
|
4521 /* enable VLAN receive filtering */ |
|
4522 rctl = er32(RCTL); |
|
4523 rctl &= ~E1000_RCTL_CFIEN; |
|
4524 if (!(netdev->flags & IFF_PROMISC)) |
|
4525 rctl |= E1000_RCTL_VFE; |
|
4526 ew32(RCTL, rctl); |
|
4527 e1000_update_mng_vlan(adapter); |
|
4528 } else { |
|
4529 /* disable VLAN tag insert/strip */ |
|
4530 ctrl = er32(CTRL); |
|
4531 ctrl &= ~E1000_CTRL_VME; |
|
4532 ew32(CTRL, ctrl); |
|
4533 |
|
4534 /* disable VLAN receive filtering */ |
|
4535 rctl = er32(RCTL); |
|
4536 rctl &= ~E1000_RCTL_VFE; |
|
4537 ew32(RCTL, rctl); |
|
4538 |
|
4539 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
4540 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4541 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4542 } |
|
4543 } |
|
4544 |
|
4545 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4546 e1000_irq_enable(adapter); |
|
4547 } |
|
4548 |
|
4549 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
4550 { |
|
4551 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4552 struct e1000_hw *hw = &adapter->hw; |
|
4553 u32 vfta, index; |
|
4554 |
|
4555 if ((hw->mng_cookie.status & |
|
4556 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4557 (vid == adapter->mng_vlan_id)) |
|
4558 return; |
|
4559 /* add VID to filter table */ |
|
4560 index = (vid >> 5) & 0x7F; |
|
4561 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4562 vfta |= (1 << (vid & 0x1F)); |
|
4563 e1000_write_vfta(hw, index, vfta); |
|
4564 } |
|
4565 |
|
4566 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
4567 { |
|
4568 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4569 struct e1000_hw *hw = &adapter->hw; |
|
4570 u32 vfta, index; |
|
4571 |
|
4572 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4573 e1000_irq_disable(adapter); |
|
4574 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
4575 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4576 e1000_irq_enable(adapter); |
|
4577 |
|
4578 /* remove VID from filter table */ |
|
4579 index = (vid >> 5) & 0x7F; |
|
4580 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4581 vfta &= ~(1 << (vid & 0x1F)); |
|
4582 e1000_write_vfta(hw, index, vfta); |
|
4583 } |
|
4584 |
|
4585 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
4586 { |
|
4587 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
4588 |
|
4589 if (adapter->vlgrp) { |
|
4590 u16 vid; |
|
4591 for (vid = 0; vid < VLAN_N_VID; vid++) { |
|
4592 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
4593 continue; |
|
4594 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
4595 } |
|
4596 } |
|
4597 } |
|
4598 |
|
4599 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx) |
|
4600 { |
|
4601 struct e1000_hw *hw = &adapter->hw; |
|
4602 |
|
4603 hw->autoneg = 0; |
|
4604 |
|
4605 /* Make sure dplx is at most 1 bit and lsb of speed is not set |
|
4606 * for the switch() below to work */ |
|
4607 if ((spd & 1) || (dplx & ~1)) |
|
4608 goto err_inval; |
|
4609 |
|
4610 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
4611 if ((hw->media_type == e1000_media_type_fiber) && |
|
4612 spd != SPEED_1000 && |
|
4613 dplx != DUPLEX_FULL) |
|
4614 goto err_inval; |
|
4615 |
|
4616 switch (spd + dplx) { |
|
4617 case SPEED_10 + DUPLEX_HALF: |
|
4618 hw->forced_speed_duplex = e1000_10_half; |
|
4619 break; |
|
4620 case SPEED_10 + DUPLEX_FULL: |
|
4621 hw->forced_speed_duplex = e1000_10_full; |
|
4622 break; |
|
4623 case SPEED_100 + DUPLEX_HALF: |
|
4624 hw->forced_speed_duplex = e1000_100_half; |
|
4625 break; |
|
4626 case SPEED_100 + DUPLEX_FULL: |
|
4627 hw->forced_speed_duplex = e1000_100_full; |
|
4628 break; |
|
4629 case SPEED_1000 + DUPLEX_FULL: |
|
4630 hw->autoneg = 1; |
|
4631 hw->autoneg_advertised = ADVERTISE_1000_FULL; |
|
4632 break; |
|
4633 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
4634 default: |
|
4635 goto err_inval; |
|
4636 } |
|
4637 return 0; |
|
4638 |
|
4639 err_inval: |
|
4640 e_err(probe, "Unsupported Speed/Duplex configuration\n"); |
|
4641 return -EINVAL; |
|
4642 } |
|
4643 |
|
4644 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
|
4645 { |
|
4646 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4647 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4648 struct e1000_hw *hw = &adapter->hw; |
|
4649 u32 ctrl, ctrl_ext, rctl, status; |
|
4650 u32 wufc = adapter->wol; |
|
4651 #ifdef CONFIG_PM |
|
4652 int retval = 0; |
|
4653 #endif |
|
4654 |
|
4655 netif_device_detach(netdev); |
|
4656 |
|
4657 if (netif_running(netdev)) { |
|
4658 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
4659 e1000_down(adapter); |
|
4660 } |
|
4661 |
|
4662 #ifdef CONFIG_PM |
|
4663 retval = pci_save_state(pdev); |
|
4664 if (retval) |
|
4665 return retval; |
|
4666 #endif |
|
4667 |
|
4668 status = er32(STATUS); |
|
4669 if (status & E1000_STATUS_LU) |
|
4670 wufc &= ~E1000_WUFC_LNKC; |
|
4671 |
|
4672 if (wufc) { |
|
4673 e1000_setup_rctl(adapter); |
|
4674 e1000_set_rx_mode(netdev); |
|
4675 |
|
4676 /* turn on all-multi mode if wake on multicast is enabled */ |
|
4677 if (wufc & E1000_WUFC_MC) { |
|
4678 rctl = er32(RCTL); |
|
4679 rctl |= E1000_RCTL_MPE; |
|
4680 ew32(RCTL, rctl); |
|
4681 } |
|
4682 |
|
4683 if (hw->mac_type >= e1000_82540) { |
|
4684 ctrl = er32(CTRL); |
|
4685 /* advertise wake from D3Cold */ |
|
4686 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
4687 /* phy power management enable */ |
|
4688 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
4689 ctrl |= E1000_CTRL_ADVD3WUC | |
|
4690 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
4691 ew32(CTRL, ctrl); |
|
4692 } |
|
4693 |
|
4694 if (hw->media_type == e1000_media_type_fiber || |
|
4695 hw->media_type == e1000_media_type_internal_serdes) { |
|
4696 /* keep the laser running in D3 */ |
|
4697 ctrl_ext = er32(CTRL_EXT); |
|
4698 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
4699 ew32(CTRL_EXT, ctrl_ext); |
|
4700 } |
|
4701 |
|
4702 ew32(WUC, E1000_WUC_PME_EN); |
|
4703 ew32(WUFC, wufc); |
|
4704 } else { |
|
4705 ew32(WUC, 0); |
|
4706 ew32(WUFC, 0); |
|
4707 } |
|
4708 |
|
4709 e1000_release_manageability(adapter); |
|
4710 |
|
4711 *enable_wake = !!wufc; |
|
4712 |
|
4713 /* make sure adapter isn't asleep if manageability is enabled */ |
|
4714 if (adapter->en_mng_pt) |
|
4715 *enable_wake = true; |
|
4716 |
|
4717 if (netif_running(netdev)) |
|
4718 e1000_free_irq(adapter); |
|
4719 |
|
4720 pci_disable_device(pdev); |
|
4721 |
|
4722 return 0; |
|
4723 } |
|
4724 |
|
4725 #ifdef CONFIG_PM |
|
4726 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
4727 { |
|
4728 int retval; |
|
4729 bool wake; |
|
4730 |
|
4731 retval = __e1000_shutdown(pdev, &wake); |
|
4732 if (retval) |
|
4733 return retval; |
|
4734 |
|
4735 if (wake) { |
|
4736 pci_prepare_to_sleep(pdev); |
|
4737 } else { |
|
4738 pci_wake_from_d3(pdev, false); |
|
4739 pci_set_power_state(pdev, PCI_D3hot); |
|
4740 } |
|
4741 |
|
4742 return 0; |
|
4743 } |
|
4744 |
|
4745 static int e1000_resume(struct pci_dev *pdev) |
|
4746 { |
|
4747 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4748 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4749 struct e1000_hw *hw = &adapter->hw; |
|
4750 u32 err; |
|
4751 |
|
4752 pci_set_power_state(pdev, PCI_D0); |
|
4753 pci_restore_state(pdev); |
|
4754 pci_save_state(pdev); |
|
4755 |
|
4756 if (adapter->need_ioport) |
|
4757 err = pci_enable_device(pdev); |
|
4758 else |
|
4759 err = pci_enable_device_mem(pdev); |
|
4760 if (err) { |
|
4761 pr_err("Cannot enable PCI device from suspend\n"); |
|
4762 return err; |
|
4763 } |
|
4764 pci_set_master(pdev); |
|
4765 |
|
4766 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4767 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4768 |
|
4769 if (netif_running(netdev)) { |
|
4770 err = e1000_request_irq(adapter); |
|
4771 if (err) |
|
4772 return err; |
|
4773 } |
|
4774 |
|
4775 e1000_power_up_phy(adapter); |
|
4776 e1000_reset(adapter); |
|
4777 ew32(WUS, ~0); |
|
4778 |
|
4779 e1000_init_manageability(adapter); |
|
4780 |
|
4781 if (netif_running(netdev)) |
|
4782 e1000_up(adapter); |
|
4783 |
|
4784 netif_device_attach(netdev); |
|
4785 |
|
4786 return 0; |
|
4787 } |
|
4788 #endif |
|
4789 |
|
4790 static void e1000_shutdown(struct pci_dev *pdev) |
|
4791 { |
|
4792 bool wake; |
|
4793 |
|
4794 __e1000_shutdown(pdev, &wake); |
|
4795 |
|
4796 if (system_state == SYSTEM_POWER_OFF) { |
|
4797 pci_wake_from_d3(pdev, wake); |
|
4798 pci_set_power_state(pdev, PCI_D3hot); |
|
4799 } |
|
4800 } |
|
4801 |
|
4802 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
4803 /* |
|
4804 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
4805 * without having to re-enable interrupts. It's not called while |
|
4806 * the interrupt routine is executing. |
|
4807 */ |
|
4808 static void e1000_netpoll(struct net_device *netdev) |
|
4809 { |
|
4810 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4811 |
|
4812 disable_irq(adapter->pdev->irq); |
|
4813 e1000_intr(adapter->pdev->irq, netdev); |
|
4814 enable_irq(adapter->pdev->irq); |
|
4815 } |
|
4816 #endif |
|
4817 |
|
4818 /** |
|
4819 * e1000_io_error_detected - called when PCI error is detected |
|
4820 * @pdev: Pointer to PCI device |
|
4821 * @state: The current pci connection state |
|
4822 * |
|
4823 * This function is called after a PCI bus error affecting |
|
4824 * this device has been detected. |
|
4825 */ |
|
4826 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
4827 pci_channel_state_t state) |
|
4828 { |
|
4829 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4830 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4831 |
|
4832 netif_device_detach(netdev); |
|
4833 |
|
4834 if (state == pci_channel_io_perm_failure) |
|
4835 return PCI_ERS_RESULT_DISCONNECT; |
|
4836 |
|
4837 if (netif_running(netdev)) |
|
4838 e1000_down(adapter); |
|
4839 pci_disable_device(pdev); |
|
4840 |
|
4841 /* Request a slot slot reset. */ |
|
4842 return PCI_ERS_RESULT_NEED_RESET; |
|
4843 } |
|
4844 |
|
4845 /** |
|
4846 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
4847 * @pdev: Pointer to PCI device |
|
4848 * |
|
4849 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
4850 * resembles the first-half of the e1000_resume routine. |
|
4851 */ |
|
4852 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
4853 { |
|
4854 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4855 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4856 struct e1000_hw *hw = &adapter->hw; |
|
4857 int err; |
|
4858 |
|
4859 if (adapter->need_ioport) |
|
4860 err = pci_enable_device(pdev); |
|
4861 else |
|
4862 err = pci_enable_device_mem(pdev); |
|
4863 if (err) { |
|
4864 pr_err("Cannot re-enable PCI device after reset.\n"); |
|
4865 return PCI_ERS_RESULT_DISCONNECT; |
|
4866 } |
|
4867 pci_set_master(pdev); |
|
4868 |
|
4869 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4870 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4871 |
|
4872 e1000_reset(adapter); |
|
4873 ew32(WUS, ~0); |
|
4874 |
|
4875 return PCI_ERS_RESULT_RECOVERED; |
|
4876 } |
|
4877 |
|
4878 /** |
|
4879 * e1000_io_resume - called when traffic can start flowing again. |
|
4880 * @pdev: Pointer to PCI device |
|
4881 * |
|
4882 * This callback is called when the error recovery driver tells us that |
|
4883 * its OK to resume normal operation. Implementation resembles the |
|
4884 * second-half of the e1000_resume routine. |
|
4885 */ |
|
4886 static void e1000_io_resume(struct pci_dev *pdev) |
|
4887 { |
|
4888 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4889 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4890 |
|
4891 e1000_init_manageability(adapter); |
|
4892 |
|
4893 if (netif_running(netdev)) { |
|
4894 if (e1000_up(adapter)) { |
|
4895 pr_info("can't bring device back up after reset\n"); |
|
4896 return; |
|
4897 } |
|
4898 } |
|
4899 |
|
4900 netif_device_attach(netdev); |
|
4901 } |
|
4902 |
|
4903 /* e1000_main.c */ |