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1 /******************************************************************************* |
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2 |
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3 Intel PRO/1000 Linux driver |
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4 Copyright(c) 1999 - 2006 Intel Corporation. |
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5 |
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6 This program is free software; you can redistribute it and/or modify it |
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7 under the terms and conditions of the GNU General Public License, |
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8 version 2, as published by the Free Software Foundation. |
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9 |
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10 This program is distributed in the hope it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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13 more details. |
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14 |
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15 You should have received a copy of the GNU General Public License along with |
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16 this program; if not, write to the Free Software Foundation, Inc., |
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17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
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18 |
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19 The full GNU General Public License is included in this distribution in |
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20 the file called "COPYING". |
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21 |
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22 Contact Information: |
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23 Linux NICS <linux.nics@intel.com> |
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24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
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25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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26 |
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27 vim: noexpandtab |
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28 |
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29 *******************************************************************************/ |
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30 |
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31 #include "e1000-3.0-ethercat.h" |
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32 #include <net/ip6_checksum.h> |
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33 #include <linux/io.h> |
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34 #include <linux/prefetch.h> |
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35 |
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36 /* Intel Media SOC GbE MDIO physical base address */ |
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37 static unsigned long ce4100_gbe_mdio_base_phy; |
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38 /* Intel Media SOC GbE MDIO virtual base address */ |
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39 void __iomem *ce4100_gbe_mdio_base_virt; |
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40 |
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41 char e1000_driver_name[] = "ec_e1000"; |
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42 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
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43 #define DRV_VERSION "7.3.21-k8-NAPI" |
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44 const char e1000_driver_version[] = DRV_VERSION; |
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45 static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
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46 |
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47 /* e1000_pci_tbl - PCI Device ID Table |
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48 * |
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49 * Last entry must be all 0s |
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50 * |
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51 * Macro expands to... |
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52 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} |
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53 */ |
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54 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
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55 INTEL_E1000_ETHERNET_DEVICE(0x1000), |
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56 INTEL_E1000_ETHERNET_DEVICE(0x1001), |
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57 INTEL_E1000_ETHERNET_DEVICE(0x1004), |
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58 INTEL_E1000_ETHERNET_DEVICE(0x1008), |
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59 INTEL_E1000_ETHERNET_DEVICE(0x1009), |
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60 INTEL_E1000_ETHERNET_DEVICE(0x100C), |
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61 INTEL_E1000_ETHERNET_DEVICE(0x100D), |
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62 INTEL_E1000_ETHERNET_DEVICE(0x100E), |
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63 INTEL_E1000_ETHERNET_DEVICE(0x100F), |
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64 INTEL_E1000_ETHERNET_DEVICE(0x1010), |
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65 INTEL_E1000_ETHERNET_DEVICE(0x1011), |
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66 INTEL_E1000_ETHERNET_DEVICE(0x1012), |
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67 INTEL_E1000_ETHERNET_DEVICE(0x1013), |
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68 INTEL_E1000_ETHERNET_DEVICE(0x1014), |
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69 INTEL_E1000_ETHERNET_DEVICE(0x1015), |
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70 INTEL_E1000_ETHERNET_DEVICE(0x1016), |
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71 INTEL_E1000_ETHERNET_DEVICE(0x1017), |
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72 INTEL_E1000_ETHERNET_DEVICE(0x1018), |
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73 INTEL_E1000_ETHERNET_DEVICE(0x1019), |
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74 INTEL_E1000_ETHERNET_DEVICE(0x101A), |
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75 INTEL_E1000_ETHERNET_DEVICE(0x101D), |
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76 INTEL_E1000_ETHERNET_DEVICE(0x101E), |
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77 INTEL_E1000_ETHERNET_DEVICE(0x1026), |
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78 INTEL_E1000_ETHERNET_DEVICE(0x1027), |
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79 INTEL_E1000_ETHERNET_DEVICE(0x1028), |
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80 INTEL_E1000_ETHERNET_DEVICE(0x1075), |
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81 INTEL_E1000_ETHERNET_DEVICE(0x1076), |
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82 INTEL_E1000_ETHERNET_DEVICE(0x1077), |
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83 INTEL_E1000_ETHERNET_DEVICE(0x1078), |
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84 INTEL_E1000_ETHERNET_DEVICE(0x1079), |
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85 INTEL_E1000_ETHERNET_DEVICE(0x107A), |
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86 INTEL_E1000_ETHERNET_DEVICE(0x107B), |
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87 INTEL_E1000_ETHERNET_DEVICE(0x107C), |
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88 INTEL_E1000_ETHERNET_DEVICE(0x108A), |
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89 INTEL_E1000_ETHERNET_DEVICE(0x1099), |
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90 INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
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91 INTEL_E1000_ETHERNET_DEVICE(0x2E6E), |
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92 /* required last entry */ |
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93 {0,} |
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94 }; |
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95 |
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96 // do not auto-load driver |
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97 // MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); |
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98 |
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99 int e1000_up(struct e1000_adapter *adapter); |
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100 void e1000_down(struct e1000_adapter *adapter); |
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101 void e1000_reinit_locked(struct e1000_adapter *adapter); |
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102 void e1000_reset(struct e1000_adapter *adapter); |
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103 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
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104 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); |
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105 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); |
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106 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); |
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107 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
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108 struct e1000_tx_ring *txdr); |
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109 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
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110 struct e1000_rx_ring *rxdr); |
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111 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
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112 struct e1000_tx_ring *tx_ring); |
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113 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
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114 struct e1000_rx_ring *rx_ring); |
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115 void e1000_update_stats(struct e1000_adapter *adapter); |
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116 |
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117 static int e1000_init_module(void); |
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118 static void e1000_exit_module(void); |
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119 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
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120 static void __devexit e1000_remove(struct pci_dev *pdev); |
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121 static int e1000_alloc_queues(struct e1000_adapter *adapter); |
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122 static int e1000_sw_init(struct e1000_adapter *adapter); |
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123 static int e1000_open(struct net_device *netdev); |
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124 static int e1000_close(struct net_device *netdev); |
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125 static void e1000_configure_tx(struct e1000_adapter *adapter); |
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126 static void e1000_configure_rx(struct e1000_adapter *adapter); |
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127 static void e1000_setup_rctl(struct e1000_adapter *adapter); |
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128 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
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129 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); |
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130 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
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131 struct e1000_tx_ring *tx_ring); |
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132 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
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133 struct e1000_rx_ring *rx_ring); |
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134 static void e1000_set_rx_mode(struct net_device *netdev); |
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135 static void e1000_update_phy_info(unsigned long data); |
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136 static void e1000_update_phy_info_task(struct work_struct *work); |
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137 static void e1000_watchdog(unsigned long data); |
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138 static void e1000_82547_tx_fifo_stall(unsigned long data); |
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139 static void e1000_82547_tx_fifo_stall_task(struct work_struct *work); |
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140 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
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141 struct net_device *netdev); |
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142 static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
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143 static int e1000_change_mtu(struct net_device *netdev, int new_mtu); |
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144 static int e1000_set_mac(struct net_device *netdev, void *p); |
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145 void ec_poll(struct net_device *); |
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146 static irqreturn_t e1000_intr(int irq, void *data); |
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147 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
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148 struct e1000_tx_ring *tx_ring); |
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149 static int e1000_clean(struct napi_struct *napi, int budget); |
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150 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
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151 struct e1000_rx_ring *rx_ring, |
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152 int *work_done, int work_to_do); |
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153 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
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154 struct e1000_rx_ring *rx_ring, |
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155 int *work_done, int work_to_do); |
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156 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
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157 struct e1000_rx_ring *rx_ring, |
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158 int cleaned_count); |
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159 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
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160 struct e1000_rx_ring *rx_ring, |
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161 int cleaned_count); |
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162 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
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163 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
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164 int cmd); |
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165 static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
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166 static void e1000_leave_82542_rst(struct e1000_adapter *adapter); |
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167 static void e1000_tx_timeout(struct net_device *dev); |
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168 static void e1000_reset_task(struct work_struct *work); |
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169 static void e1000_smartspeed(struct e1000_adapter *adapter); |
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170 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
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171 struct sk_buff *skb); |
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172 |
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173 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); |
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174 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
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175 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); |
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176 static void e1000_restore_vlan(struct e1000_adapter *adapter); |
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177 |
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178 #ifdef CONFIG_PM |
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179 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
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180 static int e1000_resume(struct pci_dev *pdev); |
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181 #endif |
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182 static void e1000_shutdown(struct pci_dev *pdev); |
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183 |
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184 #ifdef CONFIG_NET_POLL_CONTROLLER |
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185 /* for netdump / net console */ |
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186 static void e1000_netpoll (struct net_device *netdev); |
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187 #endif |
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188 |
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189 #define COPYBREAK_DEFAULT 256 |
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190 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; |
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191 module_param(copybreak, uint, 0644); |
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192 MODULE_PARM_DESC(copybreak, |
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193 "Maximum size of packet that is copied to a new buffer on receive"); |
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194 |
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195 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
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196 pci_channel_state_t state); |
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197 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); |
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198 static void e1000_io_resume(struct pci_dev *pdev); |
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199 |
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200 static struct pci_error_handlers e1000_err_handler = { |
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201 .error_detected = e1000_io_error_detected, |
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202 .slot_reset = e1000_io_slot_reset, |
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203 .resume = e1000_io_resume, |
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204 }; |
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205 |
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206 static struct pci_driver e1000_driver = { |
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207 .name = e1000_driver_name, |
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208 .id_table = e1000_pci_tbl, |
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209 .probe = e1000_probe, |
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210 .remove = __devexit_p(e1000_remove), |
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211 #ifdef CONFIG_PM |
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212 /* Power Management Hooks */ |
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213 .suspend = e1000_suspend, |
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214 .resume = e1000_resume, |
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215 #endif |
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216 .shutdown = e1000_shutdown, |
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217 .err_handler = &e1000_err_handler |
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218 }; |
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219 |
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220 MODULE_AUTHOR("Florian Pose <fp@igh-essen.com>"); |
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221 MODULE_DESCRIPTION("EtherCAT-capable Intel(R) PRO/1000 Network Driver"); |
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222 MODULE_LICENSE("GPL"); |
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223 MODULE_VERSION(DRV_VERSION); |
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224 |
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225 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
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226 module_param(debug, int, 0); |
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227 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
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228 |
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229 /** |
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230 * e1000_get_hw_dev - return device |
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231 * used by hardware layer to print debugging information |
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232 * |
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233 **/ |
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234 struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) |
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235 { |
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236 struct e1000_adapter *adapter = hw->back; |
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237 return adapter->netdev; |
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238 } |
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239 |
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240 /** |
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241 * e1000_init_module - Driver Registration Routine |
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242 * |
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243 * e1000_init_module is the first routine called when the driver is |
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244 * loaded. All it does is register with the PCI subsystem. |
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245 **/ |
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246 |
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247 static int __init e1000_init_module(void) |
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248 { |
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249 int ret; |
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250 pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version); |
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251 |
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252 pr_info("%s\n", e1000_copyright); |
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253 |
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254 ret = pci_register_driver(&e1000_driver); |
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255 if (copybreak != COPYBREAK_DEFAULT) { |
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256 if (copybreak == 0) |
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257 pr_info("copybreak disabled\n"); |
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258 else |
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259 pr_info("copybreak enabled for " |
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260 "packets <= %u bytes\n", copybreak); |
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261 } |
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262 return ret; |
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263 } |
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264 |
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265 module_init(e1000_init_module); |
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266 |
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267 /** |
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268 * e1000_exit_module - Driver Exit Cleanup Routine |
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269 * |
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270 * e1000_exit_module is called just before the driver is removed |
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271 * from memory. |
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272 **/ |
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273 |
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274 static void __exit e1000_exit_module(void) |
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275 { |
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276 pci_unregister_driver(&e1000_driver); |
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277 } |
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278 |
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279 module_exit(e1000_exit_module); |
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280 |
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281 static int e1000_request_irq(struct e1000_adapter *adapter) |
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282 { |
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283 struct net_device *netdev = adapter->netdev; |
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284 irq_handler_t handler = e1000_intr; |
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285 int irq_flags = IRQF_SHARED; |
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286 int err; |
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287 |
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288 if (adapter->ecdev) { |
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289 return 0; |
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290 } |
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291 |
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292 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
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293 netdev); |
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294 if (err) { |
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295 e_err(probe, "Unable to allocate interrupt Error: %d\n", err); |
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296 } |
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297 |
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298 return err; |
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299 } |
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300 |
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301 static void e1000_free_irq(struct e1000_adapter *adapter) |
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302 { |
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303 struct net_device *netdev = adapter->netdev; |
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304 |
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305 if (adapter->ecdev) { |
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306 return; |
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307 } |
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308 |
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309 free_irq(adapter->pdev->irq, netdev); |
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310 } |
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311 |
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312 /** |
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313 * e1000_irq_disable - Mask off interrupt generation on the NIC |
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314 * @adapter: board private structure |
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315 **/ |
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316 |
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317 static void e1000_irq_disable(struct e1000_adapter *adapter) |
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318 { |
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319 struct e1000_hw *hw = &adapter->hw; |
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320 |
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321 if (adapter->ecdev) { |
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322 return; |
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323 } |
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324 |
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325 ew32(IMC, ~0); |
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326 E1000_WRITE_FLUSH(); |
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327 synchronize_irq(adapter->pdev->irq); |
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328 } |
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329 |
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330 /** |
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331 * e1000_irq_enable - Enable default interrupt generation settings |
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332 * @adapter: board private structure |
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333 **/ |
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334 |
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335 static void e1000_irq_enable(struct e1000_adapter *adapter) |
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336 { |
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337 struct e1000_hw *hw = &adapter->hw; |
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338 |
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339 if (adapter->ecdev) { |
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340 return; |
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341 } |
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342 |
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343 ew32(IMS, IMS_ENABLE_MASK); |
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344 E1000_WRITE_FLUSH(); |
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345 } |
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346 |
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347 static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
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348 { |
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349 struct e1000_hw *hw = &adapter->hw; |
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350 struct net_device *netdev = adapter->netdev; |
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351 u16 vid = hw->mng_cookie.vlan_id; |
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352 u16 old_vid = adapter->mng_vlan_id; |
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353 if (adapter->vlgrp) { |
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354 if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
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355 if (hw->mng_cookie.status & |
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356 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
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357 e1000_vlan_rx_add_vid(netdev, vid); |
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358 adapter->mng_vlan_id = vid; |
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359 } else |
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360 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
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361 |
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362 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
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363 (vid != old_vid) && |
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364 !vlan_group_get_device(adapter->vlgrp, old_vid)) |
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365 e1000_vlan_rx_kill_vid(netdev, old_vid); |
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366 } else |
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367 adapter->mng_vlan_id = vid; |
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368 } |
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369 } |
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370 |
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371 static void e1000_init_manageability(struct e1000_adapter *adapter) |
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372 { |
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373 struct e1000_hw *hw = &adapter->hw; |
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374 |
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375 if (adapter->en_mng_pt) { |
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376 u32 manc = er32(MANC); |
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377 |
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378 /* disable hardware interception of ARP */ |
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379 manc &= ~(E1000_MANC_ARP_EN); |
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380 |
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381 ew32(MANC, manc); |
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382 } |
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383 } |
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384 |
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385 static void e1000_release_manageability(struct e1000_adapter *adapter) |
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386 { |
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387 struct e1000_hw *hw = &adapter->hw; |
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388 |
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389 if (adapter->en_mng_pt) { |
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390 u32 manc = er32(MANC); |
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391 |
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392 /* re-enable hardware interception of ARP */ |
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393 manc |= E1000_MANC_ARP_EN; |
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394 |
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395 ew32(MANC, manc); |
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396 } |
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397 } |
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398 |
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399 /** |
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400 * e1000_configure - configure the hardware for RX and TX |
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401 * @adapter = private board structure |
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402 **/ |
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403 static void e1000_configure(struct e1000_adapter *adapter) |
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404 { |
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405 struct net_device *netdev = adapter->netdev; |
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406 int i; |
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407 |
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408 e1000_set_rx_mode(netdev); |
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409 |
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410 e1000_restore_vlan(adapter); |
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411 e1000_init_manageability(adapter); |
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412 |
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413 e1000_configure_tx(adapter); |
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414 e1000_setup_rctl(adapter); |
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415 e1000_configure_rx(adapter); |
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416 /* call E1000_DESC_UNUSED which always leaves |
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417 * at least 1 descriptor unused to make sure |
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418 * next_to_use != next_to_clean */ |
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419 for (i = 0; i < adapter->num_rx_queues; i++) { |
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420 struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
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421 if (adapter->ecdev) { |
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422 /* fill rx ring completely! */ |
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423 adapter->alloc_rx_buf(adapter, ring, ring->count); |
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424 } else { |
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425 /* this one leaves the last ring element unallocated! */ |
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426 adapter->alloc_rx_buf(adapter, ring, |
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427 E1000_DESC_UNUSED(ring)); |
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428 } |
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429 } |
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430 } |
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431 |
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432 int e1000_up(struct e1000_adapter *adapter) |
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433 { |
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434 struct e1000_hw *hw = &adapter->hw; |
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435 |
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436 /* hardware has been reset, we need to reload some things */ |
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437 e1000_configure(adapter); |
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438 |
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439 clear_bit(__E1000_DOWN, &adapter->flags); |
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440 |
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441 if (!adapter->ecdev) { |
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442 napi_enable(&adapter->napi); |
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443 |
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444 e1000_irq_enable(adapter); |
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445 |
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446 netif_wake_queue(adapter->netdev); |
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447 |
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448 /* fire a link change interrupt to start the watchdog */ |
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449 ew32(ICS, E1000_ICS_LSC); |
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450 } |
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451 return 0; |
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452 } |
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453 |
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454 /** |
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455 * e1000_power_up_phy - restore link in case the phy was powered down |
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456 * @adapter: address of board private structure |
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457 * |
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458 * The phy may be powered down to save power and turn off link when the |
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459 * driver is unloaded and wake on lan is not enabled (among others) |
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460 * *** this routine MUST be followed by a call to e1000_reset *** |
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461 * |
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462 **/ |
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463 |
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464 void e1000_power_up_phy(struct e1000_adapter *adapter) |
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465 { |
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466 struct e1000_hw *hw = &adapter->hw; |
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467 u16 mii_reg = 0; |
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468 |
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469 /* Just clear the power down bit to wake the phy back up */ |
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470 if (hw->media_type == e1000_media_type_copper) { |
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471 /* according to the manual, the phy will retain its |
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472 * settings across a power-down/up cycle */ |
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473 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
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474 mii_reg &= ~MII_CR_POWER_DOWN; |
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475 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
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476 } |
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477 } |
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478 |
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479 static void e1000_power_down_phy(struct e1000_adapter *adapter) |
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480 { |
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481 struct e1000_hw *hw = &adapter->hw; |
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482 |
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483 /* Power down the PHY so no link is implied when interface is down * |
|
484 * The PHY cannot be powered down if any of the following is true * |
|
485 * (a) WoL is enabled |
|
486 * (b) AMT is active |
|
487 * (c) SoL/IDER session is active */ |
|
488 if (!adapter->wol && hw->mac_type >= e1000_82540 && |
|
489 hw->media_type == e1000_media_type_copper) { |
|
490 u16 mii_reg = 0; |
|
491 |
|
492 switch (hw->mac_type) { |
|
493 case e1000_82540: |
|
494 case e1000_82545: |
|
495 case e1000_82545_rev_3: |
|
496 case e1000_82546: |
|
497 case e1000_ce4100: |
|
498 case e1000_82546_rev_3: |
|
499 case e1000_82541: |
|
500 case e1000_82541_rev_2: |
|
501 case e1000_82547: |
|
502 case e1000_82547_rev_2: |
|
503 if (er32(MANC) & E1000_MANC_SMBUS_EN) |
|
504 goto out; |
|
505 break; |
|
506 default: |
|
507 goto out; |
|
508 } |
|
509 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
|
510 mii_reg |= MII_CR_POWER_DOWN; |
|
511 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
|
512 mdelay(1); |
|
513 } |
|
514 out: |
|
515 return; |
|
516 } |
|
517 |
|
518 void e1000_down(struct e1000_adapter *adapter) |
|
519 { |
|
520 struct e1000_hw *hw = &adapter->hw; |
|
521 struct net_device *netdev = adapter->netdev; |
|
522 u32 rctl, tctl; |
|
523 |
|
524 |
|
525 /* disable receives in the hardware */ |
|
526 rctl = er32(RCTL); |
|
527 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
528 |
|
529 if (!adapter->ecdev) { |
|
530 /* flush and sleep below */ |
|
531 netif_tx_disable(netdev); |
|
532 } |
|
533 |
|
534 /* disable transmits in the hardware */ |
|
535 tctl = er32(TCTL); |
|
536 tctl &= ~E1000_TCTL_EN; |
|
537 ew32(TCTL, tctl); |
|
538 /* flush both disables and wait for them to finish */ |
|
539 E1000_WRITE_FLUSH(); |
|
540 msleep(10); |
|
541 |
|
542 if (!adapter->ecdev) { |
|
543 napi_disable(&adapter->napi); |
|
544 |
|
545 e1000_irq_disable(adapter); |
|
546 } |
|
547 |
|
548 /* |
|
549 * Setting DOWN must be after irq_disable to prevent |
|
550 * a screaming interrupt. Setting DOWN also prevents |
|
551 * timers and tasks from rescheduling. |
|
552 */ |
|
553 set_bit(__E1000_DOWN, &adapter->flags); |
|
554 |
|
555 if (!adapter->ecdev) { |
|
556 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
557 del_timer_sync(&adapter->watchdog_timer); |
|
558 del_timer_sync(&adapter->phy_info_timer); |
|
559 } |
|
560 |
|
561 adapter->link_speed = 0; |
|
562 adapter->link_duplex = 0; |
|
563 if (!adapter->ecdev) { |
|
564 netif_carrier_off(netdev); |
|
565 } |
|
566 |
|
567 e1000_reset(adapter); |
|
568 e1000_clean_all_tx_rings(adapter); |
|
569 e1000_clean_all_rx_rings(adapter); |
|
570 } |
|
571 |
|
572 static void e1000_reinit_safe(struct e1000_adapter *adapter) |
|
573 { |
|
574 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
575 msleep(1); |
|
576 rtnl_lock(); |
|
577 e1000_down(adapter); |
|
578 e1000_up(adapter); |
|
579 rtnl_unlock(); |
|
580 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
581 } |
|
582 |
|
583 void e1000_reinit_locked(struct e1000_adapter *adapter) |
|
584 { |
|
585 /* if rtnl_lock is not held the call path is bogus */ |
|
586 ASSERT_RTNL(); |
|
587 WARN_ON(in_interrupt()); |
|
588 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
589 msleep(1); |
|
590 e1000_down(adapter); |
|
591 e1000_up(adapter); |
|
592 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
593 } |
|
594 |
|
595 void e1000_reset(struct e1000_adapter *adapter) |
|
596 { |
|
597 struct e1000_hw *hw = &adapter->hw; |
|
598 u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
|
599 bool legacy_pba_adjust = false; |
|
600 u16 hwm; |
|
601 |
|
602 /* Repartition Pba for greater than 9k mtu |
|
603 * To take effect CTRL.RST is required. |
|
604 */ |
|
605 |
|
606 switch (hw->mac_type) { |
|
607 case e1000_82542_rev2_0: |
|
608 case e1000_82542_rev2_1: |
|
609 case e1000_82543: |
|
610 case e1000_82544: |
|
611 case e1000_82540: |
|
612 case e1000_82541: |
|
613 case e1000_82541_rev_2: |
|
614 legacy_pba_adjust = true; |
|
615 pba = E1000_PBA_48K; |
|
616 break; |
|
617 case e1000_82545: |
|
618 case e1000_82545_rev_3: |
|
619 case e1000_82546: |
|
620 case e1000_ce4100: |
|
621 case e1000_82546_rev_3: |
|
622 pba = E1000_PBA_48K; |
|
623 break; |
|
624 case e1000_82547: |
|
625 case e1000_82547_rev_2: |
|
626 legacy_pba_adjust = true; |
|
627 pba = E1000_PBA_30K; |
|
628 break; |
|
629 case e1000_undefined: |
|
630 case e1000_num_macs: |
|
631 break; |
|
632 } |
|
633 |
|
634 if (legacy_pba_adjust) { |
|
635 if (hw->max_frame_size > E1000_RXBUFFER_8192) |
|
636 pba -= 8; /* allocate more FIFO for Tx */ |
|
637 |
|
638 if (hw->mac_type == e1000_82547) { |
|
639 adapter->tx_fifo_head = 0; |
|
640 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; |
|
641 adapter->tx_fifo_size = |
|
642 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; |
|
643 atomic_set(&adapter->tx_fifo_stall, 0); |
|
644 } |
|
645 } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
|
646 /* adjust PBA for jumbo frames */ |
|
647 ew32(PBA, pba); |
|
648 |
|
649 /* To maintain wire speed transmits, the Tx FIFO should be |
|
650 * large enough to accommodate two full transmit packets, |
|
651 * rounded up to the next 1KB and expressed in KB. Likewise, |
|
652 * the Rx FIFO should be large enough to accommodate at least |
|
653 * one full receive packet and is similarly rounded up and |
|
654 * expressed in KB. */ |
|
655 pba = er32(PBA); |
|
656 /* upper 16 bits has Tx packet buffer allocation size in KB */ |
|
657 tx_space = pba >> 16; |
|
658 /* lower 16 bits has Rx packet buffer allocation size in KB */ |
|
659 pba &= 0xffff; |
|
660 /* |
|
661 * the tx fifo also stores 16 bytes of information about the tx |
|
662 * but don't include ethernet FCS because hardware appends it |
|
663 */ |
|
664 min_tx_space = (hw->max_frame_size + |
|
665 sizeof(struct e1000_tx_desc) - |
|
666 ETH_FCS_LEN) * 2; |
|
667 min_tx_space = ALIGN(min_tx_space, 1024); |
|
668 min_tx_space >>= 10; |
|
669 /* software strips receive CRC, so leave room for it */ |
|
670 min_rx_space = hw->max_frame_size; |
|
671 min_rx_space = ALIGN(min_rx_space, 1024); |
|
672 min_rx_space >>= 10; |
|
673 |
|
674 /* If current Tx allocation is less than the min Tx FIFO size, |
|
675 * and the min Tx FIFO size is less than the current Rx FIFO |
|
676 * allocation, take space away from current Rx allocation */ |
|
677 if (tx_space < min_tx_space && |
|
678 ((min_tx_space - tx_space) < pba)) { |
|
679 pba = pba - (min_tx_space - tx_space); |
|
680 |
|
681 /* PCI/PCIx hardware has PBA alignment constraints */ |
|
682 switch (hw->mac_type) { |
|
683 case e1000_82545 ... e1000_82546_rev_3: |
|
684 pba &= ~(E1000_PBA_8K - 1); |
|
685 break; |
|
686 default: |
|
687 break; |
|
688 } |
|
689 |
|
690 /* if short on rx space, rx wins and must trump tx |
|
691 * adjustment or use Early Receive if available */ |
|
692 if (pba < min_rx_space) |
|
693 pba = min_rx_space; |
|
694 } |
|
695 } |
|
696 |
|
697 ew32(PBA, pba); |
|
698 |
|
699 /* |
|
700 * flow control settings: |
|
701 * The high water mark must be low enough to fit one full frame |
|
702 * (or the size used for early receive) above it in the Rx FIFO. |
|
703 * Set it to the lower of: |
|
704 * - 90% of the Rx FIFO size, and |
|
705 * - the full Rx FIFO size minus the early receive size (for parts |
|
706 * with ERT support assuming ERT set to E1000_ERT_2048), or |
|
707 * - the full Rx FIFO size minus one full frame |
|
708 */ |
|
709 hwm = min(((pba << 10) * 9 / 10), |
|
710 ((pba << 10) - hw->max_frame_size)); |
|
711 |
|
712 hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
|
713 hw->fc_low_water = hw->fc_high_water - 8; |
|
714 hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
|
715 hw->fc_send_xon = 1; |
|
716 hw->fc = hw->original_fc; |
|
717 |
|
718 /* Allow time for pending master requests to run */ |
|
719 e1000_reset_hw(hw); |
|
720 if (hw->mac_type >= e1000_82544) |
|
721 ew32(WUC, 0); |
|
722 |
|
723 if (e1000_init_hw(hw)) |
|
724 e_dev_err("Hardware Error\n"); |
|
725 e1000_update_mng_vlan(adapter); |
|
726 |
|
727 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ |
|
728 if (hw->mac_type >= e1000_82544 && |
|
729 hw->autoneg == 1 && |
|
730 hw->autoneg_advertised == ADVERTISE_1000_FULL) { |
|
731 u32 ctrl = er32(CTRL); |
|
732 /* clear phy power management bit if we are in gig only mode, |
|
733 * which if enabled will attempt negotiation to 100Mb, which |
|
734 * can cause a loss of link at power off or driver unload */ |
|
735 ctrl &= ~E1000_CTRL_SWDPIN3; |
|
736 ew32(CTRL, ctrl); |
|
737 } |
|
738 |
|
739 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
|
740 ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
|
741 |
|
742 e1000_reset_adaptive(hw); |
|
743 e1000_phy_get_info(hw, &adapter->phy_info); |
|
744 |
|
745 e1000_release_manageability(adapter); |
|
746 } |
|
747 |
|
748 /** |
|
749 * Dump the eeprom for users having checksum issues |
|
750 **/ |
|
751 static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
|
752 { |
|
753 struct net_device *netdev = adapter->netdev; |
|
754 struct ethtool_eeprom eeprom; |
|
755 const struct ethtool_ops *ops = netdev->ethtool_ops; |
|
756 u8 *data; |
|
757 int i; |
|
758 u16 csum_old, csum_new = 0; |
|
759 |
|
760 eeprom.len = ops->get_eeprom_len(netdev); |
|
761 eeprom.offset = 0; |
|
762 |
|
763 data = kmalloc(eeprom.len, GFP_KERNEL); |
|
764 if (!data) { |
|
765 pr_err("Unable to allocate memory to dump EEPROM data\n"); |
|
766 return; |
|
767 } |
|
768 |
|
769 ops->get_eeprom(netdev, &eeprom, data); |
|
770 |
|
771 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + |
|
772 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); |
|
773 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) |
|
774 csum_new += data[i] + (data[i + 1] << 8); |
|
775 csum_new = EEPROM_SUM - csum_new; |
|
776 |
|
777 pr_err("/*********************/\n"); |
|
778 pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old); |
|
779 pr_err("Calculated : 0x%04x\n", csum_new); |
|
780 |
|
781 pr_err("Offset Values\n"); |
|
782 pr_err("======== ======\n"); |
|
783 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
|
784 |
|
785 pr_err("Include this output when contacting your support provider.\n"); |
|
786 pr_err("This is not a software error! Something bad happened to\n"); |
|
787 pr_err("your hardware or EEPROM image. Ignoring this problem could\n"); |
|
788 pr_err("result in further problems, possibly loss of data,\n"); |
|
789 pr_err("corruption or system hangs!\n"); |
|
790 pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n"); |
|
791 pr_err("which is invalid and requires you to set the proper MAC\n"); |
|
792 pr_err("address manually before continuing to enable this network\n"); |
|
793 pr_err("device. Please inspect the EEPROM dump and report the\n"); |
|
794 pr_err("issue to your hardware vendor or Intel Customer Support.\n"); |
|
795 pr_err("/*********************/\n"); |
|
796 |
|
797 kfree(data); |
|
798 } |
|
799 |
|
800 /** |
|
801 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not |
|
802 * @pdev: PCI device information struct |
|
803 * |
|
804 * Return true if an adapter needs ioport resources |
|
805 **/ |
|
806 static int e1000_is_need_ioport(struct pci_dev *pdev) |
|
807 { |
|
808 switch (pdev->device) { |
|
809 case E1000_DEV_ID_82540EM: |
|
810 case E1000_DEV_ID_82540EM_LOM: |
|
811 case E1000_DEV_ID_82540EP: |
|
812 case E1000_DEV_ID_82540EP_LOM: |
|
813 case E1000_DEV_ID_82540EP_LP: |
|
814 case E1000_DEV_ID_82541EI: |
|
815 case E1000_DEV_ID_82541EI_MOBILE: |
|
816 case E1000_DEV_ID_82541ER: |
|
817 case E1000_DEV_ID_82541ER_LOM: |
|
818 case E1000_DEV_ID_82541GI: |
|
819 case E1000_DEV_ID_82541GI_LF: |
|
820 case E1000_DEV_ID_82541GI_MOBILE: |
|
821 case E1000_DEV_ID_82544EI_COPPER: |
|
822 case E1000_DEV_ID_82544EI_FIBER: |
|
823 case E1000_DEV_ID_82544GC_COPPER: |
|
824 case E1000_DEV_ID_82544GC_LOM: |
|
825 case E1000_DEV_ID_82545EM_COPPER: |
|
826 case E1000_DEV_ID_82545EM_FIBER: |
|
827 case E1000_DEV_ID_82546EB_COPPER: |
|
828 case E1000_DEV_ID_82546EB_FIBER: |
|
829 case E1000_DEV_ID_82546EB_QUAD_COPPER: |
|
830 return true; |
|
831 default: |
|
832 return false; |
|
833 } |
|
834 } |
|
835 |
|
836 static const struct net_device_ops e1000_netdev_ops = { |
|
837 .ndo_open = e1000_open, |
|
838 .ndo_stop = e1000_close, |
|
839 .ndo_start_xmit = e1000_xmit_frame, |
|
840 .ndo_get_stats = e1000_get_stats, |
|
841 .ndo_set_rx_mode = e1000_set_rx_mode, |
|
842 .ndo_set_mac_address = e1000_set_mac, |
|
843 .ndo_tx_timeout = e1000_tx_timeout, |
|
844 .ndo_change_mtu = e1000_change_mtu, |
|
845 .ndo_do_ioctl = e1000_ioctl, |
|
846 .ndo_validate_addr = eth_validate_addr, |
|
847 |
|
848 .ndo_vlan_rx_register = e1000_vlan_rx_register, |
|
849 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
|
850 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, |
|
851 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
852 .ndo_poll_controller = e1000_netpoll, |
|
853 #endif |
|
854 }; |
|
855 |
|
856 /** |
|
857 * e1000_init_hw_struct - initialize members of hw struct |
|
858 * @adapter: board private struct |
|
859 * @hw: structure used by e1000_hw.c |
|
860 * |
|
861 * Factors out initialization of the e1000_hw struct to its own function |
|
862 * that can be called very early at init (just after struct allocation). |
|
863 * Fields are initialized based on PCI device information and |
|
864 * OS network device settings (MTU size). |
|
865 * Returns negative error codes if MAC type setup fails. |
|
866 */ |
|
867 static int e1000_init_hw_struct(struct e1000_adapter *adapter, |
|
868 struct e1000_hw *hw) |
|
869 { |
|
870 struct pci_dev *pdev = adapter->pdev; |
|
871 |
|
872 /* PCI config space info */ |
|
873 hw->vendor_id = pdev->vendor; |
|
874 hw->device_id = pdev->device; |
|
875 hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
876 hw->subsystem_id = pdev->subsystem_device; |
|
877 hw->revision_id = pdev->revision; |
|
878 |
|
879 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); |
|
880 |
|
881 hw->max_frame_size = adapter->netdev->mtu + |
|
882 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
883 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; |
|
884 |
|
885 /* identify the MAC */ |
|
886 if (e1000_set_mac_type(hw)) { |
|
887 e_err(probe, "Unknown MAC Type\n"); |
|
888 return -EIO; |
|
889 } |
|
890 |
|
891 switch (hw->mac_type) { |
|
892 default: |
|
893 break; |
|
894 case e1000_82541: |
|
895 case e1000_82547: |
|
896 case e1000_82541_rev_2: |
|
897 case e1000_82547_rev_2: |
|
898 hw->phy_init_script = 1; |
|
899 break; |
|
900 } |
|
901 |
|
902 e1000_set_media_type(hw); |
|
903 e1000_get_bus_info(hw); |
|
904 |
|
905 hw->wait_autoneg_complete = false; |
|
906 hw->tbi_compatibility_en = true; |
|
907 hw->adaptive_ifs = true; |
|
908 |
|
909 /* Copper options */ |
|
910 |
|
911 if (hw->media_type == e1000_media_type_copper) { |
|
912 hw->mdix = AUTO_ALL_MODES; |
|
913 hw->disable_polarity_correction = false; |
|
914 hw->master_slave = E1000_MASTER_SLAVE; |
|
915 } |
|
916 |
|
917 return 0; |
|
918 } |
|
919 |
|
920 /** |
|
921 * e1000_probe - Device Initialization Routine |
|
922 * @pdev: PCI device information struct |
|
923 * @ent: entry in e1000_pci_tbl |
|
924 * |
|
925 * Returns 0 on success, negative on failure |
|
926 * |
|
927 * e1000_probe initializes an adapter identified by a pci_dev structure. |
|
928 * The OS initialization, configuring of the adapter private structure, |
|
929 * and a hardware reset occur. |
|
930 **/ |
|
931 static int __devinit e1000_probe(struct pci_dev *pdev, |
|
932 const struct pci_device_id *ent) |
|
933 { |
|
934 struct net_device *netdev; |
|
935 struct e1000_adapter *adapter; |
|
936 struct e1000_hw *hw; |
|
937 |
|
938 static int cards_found = 0; |
|
939 static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
|
940 int i, err, pci_using_dac; |
|
941 u16 eeprom_data = 0; |
|
942 u16 tmp = 0; |
|
943 u16 eeprom_apme_mask = E1000_EEPROM_APME; |
|
944 int bars, need_ioport; |
|
945 |
|
946 /* do not allocate ioport bars when not needed */ |
|
947 need_ioport = e1000_is_need_ioport(pdev); |
|
948 if (need_ioport) { |
|
949 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); |
|
950 err = pci_enable_device(pdev); |
|
951 } else { |
|
952 bars = pci_select_bars(pdev, IORESOURCE_MEM); |
|
953 err = pci_enable_device_mem(pdev); |
|
954 } |
|
955 if (err) |
|
956 return err; |
|
957 |
|
958 err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
|
959 if (err) |
|
960 goto err_pci_reg; |
|
961 |
|
962 pci_set_master(pdev); |
|
963 err = pci_save_state(pdev); |
|
964 if (err) |
|
965 goto err_alloc_etherdev; |
|
966 |
|
967 err = -ENOMEM; |
|
968 netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
|
969 if (!netdev) |
|
970 goto err_alloc_etherdev; |
|
971 |
|
972 SET_NETDEV_DEV(netdev, &pdev->dev); |
|
973 |
|
974 pci_set_drvdata(pdev, netdev); |
|
975 adapter = netdev_priv(netdev); |
|
976 adapter->netdev = netdev; |
|
977 adapter->pdev = pdev; |
|
978 adapter->msg_enable = (1 << debug) - 1; |
|
979 adapter->bars = bars; |
|
980 adapter->need_ioport = need_ioport; |
|
981 |
|
982 hw = &adapter->hw; |
|
983 hw->back = adapter; |
|
984 |
|
985 err = -EIO; |
|
986 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
|
987 if (!hw->hw_addr) |
|
988 goto err_ioremap; |
|
989 |
|
990 if (adapter->need_ioport) { |
|
991 for (i = BAR_1; i <= BAR_5; i++) { |
|
992 if (pci_resource_len(pdev, i) == 0) |
|
993 continue; |
|
994 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
|
995 hw->io_base = pci_resource_start(pdev, i); |
|
996 break; |
|
997 } |
|
998 } |
|
999 } |
|
1000 |
|
1001 /* make ready for any if (hw->...) below */ |
|
1002 err = e1000_init_hw_struct(adapter, hw); |
|
1003 if (err) |
|
1004 goto err_sw_init; |
|
1005 |
|
1006 /* |
|
1007 * there is a workaround being applied below that limits |
|
1008 * 64-bit DMA addresses to 64-bit hardware. There are some |
|
1009 * 32-bit adapters that Tx hang when given 64-bit DMA addresses |
|
1010 */ |
|
1011 pci_using_dac = 0; |
|
1012 if ((hw->bus_type == e1000_bus_type_pcix) && |
|
1013 !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { |
|
1014 /* |
|
1015 * according to DMA-API-HOWTO, coherent calls will always |
|
1016 * succeed if the set call did |
|
1017 */ |
|
1018 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
1019 pci_using_dac = 1; |
|
1020 } else { |
|
1021 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
1022 if (err) { |
|
1023 pr_err("No usable DMA config, aborting\n"); |
|
1024 goto err_dma; |
|
1025 } |
|
1026 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
1027 } |
|
1028 |
|
1029 netdev->netdev_ops = &e1000_netdev_ops; |
|
1030 e1000_set_ethtool_ops(netdev); |
|
1031 netdev->watchdog_timeo = 5 * HZ; |
|
1032 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
|
1033 |
|
1034 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
|
1035 |
|
1036 adapter->bd_number = cards_found; |
|
1037 |
|
1038 /* setup the private structure */ |
|
1039 |
|
1040 err = e1000_sw_init(adapter); |
|
1041 if (err) |
|
1042 goto err_sw_init; |
|
1043 |
|
1044 err = -EIO; |
|
1045 if (hw->mac_type == e1000_ce4100) { |
|
1046 ce4100_gbe_mdio_base_phy = pci_resource_start(pdev, BAR_1); |
|
1047 ce4100_gbe_mdio_base_virt = ioremap(ce4100_gbe_mdio_base_phy, |
|
1048 pci_resource_len(pdev, BAR_1)); |
|
1049 |
|
1050 if (!ce4100_gbe_mdio_base_virt) |
|
1051 goto err_mdio_ioremap; |
|
1052 } |
|
1053 |
|
1054 if (hw->mac_type >= e1000_82543) { |
|
1055 netdev->features = NETIF_F_SG | |
|
1056 NETIF_F_HW_CSUM | |
|
1057 NETIF_F_HW_VLAN_TX | |
|
1058 NETIF_F_HW_VLAN_RX | |
|
1059 NETIF_F_HW_VLAN_FILTER; |
|
1060 } |
|
1061 |
|
1062 if ((hw->mac_type >= e1000_82544) && |
|
1063 (hw->mac_type != e1000_82547)) |
|
1064 netdev->features |= NETIF_F_TSO; |
|
1065 |
|
1066 if (pci_using_dac) { |
|
1067 netdev->features |= NETIF_F_HIGHDMA; |
|
1068 netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
1069 } |
|
1070 |
|
1071 netdev->vlan_features |= NETIF_F_TSO; |
|
1072 netdev->vlan_features |= NETIF_F_HW_CSUM; |
|
1073 netdev->vlan_features |= NETIF_F_SG; |
|
1074 |
|
1075 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
|
1076 |
|
1077 /* initialize eeprom parameters */ |
|
1078 if (e1000_init_eeprom_params(hw)) { |
|
1079 e_err(probe, "EEPROM initialization failed\n"); |
|
1080 goto err_eeprom; |
|
1081 } |
|
1082 |
|
1083 /* before reading the EEPROM, reset the controller to |
|
1084 * put the device in a known good starting state */ |
|
1085 |
|
1086 e1000_reset_hw(hw); |
|
1087 |
|
1088 /* make sure the EEPROM is good */ |
|
1089 if (e1000_validate_eeprom_checksum(hw) < 0) { |
|
1090 e_err(probe, "The EEPROM Checksum Is Not Valid\n"); |
|
1091 e1000_dump_eeprom(adapter); |
|
1092 /* |
|
1093 * set MAC address to all zeroes to invalidate and temporary |
|
1094 * disable this device for the user. This blocks regular |
|
1095 * traffic while still permitting ethtool ioctls from reaching |
|
1096 * the hardware as well as allowing the user to run the |
|
1097 * interface after manually setting a hw addr using |
|
1098 * `ip set address` |
|
1099 */ |
|
1100 memset(hw->mac_addr, 0, netdev->addr_len); |
|
1101 } else { |
|
1102 /* copy the MAC address out of the EEPROM */ |
|
1103 if (e1000_read_mac_addr(hw)) |
|
1104 e_err(probe, "EEPROM Read Error\n"); |
|
1105 } |
|
1106 /* don't block initalization here due to bad MAC address */ |
|
1107 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
|
1108 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); |
|
1109 |
|
1110 if (!is_valid_ether_addr(netdev->perm_addr)) |
|
1111 e_err(probe, "Invalid MAC Address\n"); |
|
1112 |
|
1113 init_timer(&adapter->tx_fifo_stall_timer); |
|
1114 adapter->tx_fifo_stall_timer.function = e1000_82547_tx_fifo_stall; |
|
1115 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
|
1116 |
|
1117 init_timer(&adapter->watchdog_timer); |
|
1118 adapter->watchdog_timer.function = e1000_watchdog; |
|
1119 adapter->watchdog_timer.data = (unsigned long) adapter; |
|
1120 |
|
1121 init_timer(&adapter->phy_info_timer); |
|
1122 adapter->phy_info_timer.function = e1000_update_phy_info; |
|
1123 adapter->phy_info_timer.data = (unsigned long)adapter; |
|
1124 |
|
1125 INIT_WORK(&adapter->fifo_stall_task, e1000_82547_tx_fifo_stall_task); |
|
1126 INIT_WORK(&adapter->reset_task, e1000_reset_task); |
|
1127 INIT_WORK(&adapter->phy_info_task, e1000_update_phy_info_task); |
|
1128 |
|
1129 e1000_check_options(adapter); |
|
1130 |
|
1131 /* Initial Wake on LAN setting |
|
1132 * If APM wake is enabled in the EEPROM, |
|
1133 * enable the ACPI Magic Packet filter |
|
1134 */ |
|
1135 |
|
1136 switch (hw->mac_type) { |
|
1137 case e1000_82542_rev2_0: |
|
1138 case e1000_82542_rev2_1: |
|
1139 case e1000_82543: |
|
1140 break; |
|
1141 case e1000_82544: |
|
1142 e1000_read_eeprom(hw, |
|
1143 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
|
1144 eeprom_apme_mask = E1000_EEPROM_82544_APM; |
|
1145 break; |
|
1146 case e1000_82546: |
|
1147 case e1000_82546_rev_3: |
|
1148 if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
|
1149 e1000_read_eeprom(hw, |
|
1150 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
|
1151 break; |
|
1152 } |
|
1153 /* Fall Through */ |
|
1154 default: |
|
1155 e1000_read_eeprom(hw, |
|
1156 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
|
1157 break; |
|
1158 } |
|
1159 if (eeprom_data & eeprom_apme_mask) |
|
1160 adapter->eeprom_wol |= E1000_WUFC_MAG; |
|
1161 |
|
1162 /* now that we have the eeprom settings, apply the special cases |
|
1163 * where the eeprom may be wrong or the board simply won't support |
|
1164 * wake on lan on a particular port */ |
|
1165 switch (pdev->device) { |
|
1166 case E1000_DEV_ID_82546GB_PCIE: |
|
1167 adapter->eeprom_wol = 0; |
|
1168 break; |
|
1169 case E1000_DEV_ID_82546EB_FIBER: |
|
1170 case E1000_DEV_ID_82546GB_FIBER: |
|
1171 /* Wake events only supported on port A for dual fiber |
|
1172 * regardless of eeprom setting */ |
|
1173 if (er32(STATUS) & E1000_STATUS_FUNC_1) |
|
1174 adapter->eeprom_wol = 0; |
|
1175 break; |
|
1176 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: |
|
1177 /* if quad port adapter, disable WoL on all but port A */ |
|
1178 if (global_quad_port_a != 0) |
|
1179 adapter->eeprom_wol = 0; |
|
1180 else |
|
1181 adapter->quad_port_a = 1; |
|
1182 /* Reset for multiple quad port adapters */ |
|
1183 if (++global_quad_port_a == 4) |
|
1184 global_quad_port_a = 0; |
|
1185 break; |
|
1186 } |
|
1187 |
|
1188 /* initialize the wol settings based on the eeprom settings */ |
|
1189 adapter->wol = adapter->eeprom_wol; |
|
1190 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
|
1191 |
|
1192 /* Auto detect PHY address */ |
|
1193 if (hw->mac_type == e1000_ce4100) { |
|
1194 for (i = 0; i < 32; i++) { |
|
1195 hw->phy_addr = i; |
|
1196 e1000_read_phy_reg(hw, PHY_ID2, &tmp); |
|
1197 if (tmp == 0 || tmp == 0xFF) { |
|
1198 if (i == 31) |
|
1199 goto err_eeprom; |
|
1200 continue; |
|
1201 } else |
|
1202 break; |
|
1203 } |
|
1204 } |
|
1205 |
|
1206 /* reset the hardware with the new settings */ |
|
1207 e1000_reset(adapter); |
|
1208 |
|
1209 // offer device to EtherCAT master module |
|
1210 adapter->ecdev = ecdev_offer(netdev, ec_poll, THIS_MODULE); |
|
1211 if (adapter->ecdev) { |
|
1212 if (ecdev_open(adapter->ecdev)) { |
|
1213 ecdev_withdraw(adapter->ecdev); |
|
1214 goto err_register; |
|
1215 } |
|
1216 } else { |
|
1217 strcpy(netdev->name, "eth%d"); |
|
1218 err = register_netdev(netdev); |
|
1219 if (err) |
|
1220 goto err_register; |
|
1221 } |
|
1222 |
|
1223 /* print bus type/speed/width info */ |
|
1224 e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n", |
|
1225 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
|
1226 ((hw->bus_speed == e1000_bus_speed_133) ? 133 : |
|
1227 (hw->bus_speed == e1000_bus_speed_120) ? 120 : |
|
1228 (hw->bus_speed == e1000_bus_speed_100) ? 100 : |
|
1229 (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33), |
|
1230 ((hw->bus_width == e1000_bus_width_64) ? 64 : 32), |
|
1231 netdev->dev_addr); |
|
1232 |
|
1233 if (!adapter->ecdev) { |
|
1234 /* carrier off reporting is important to ethtool even BEFORE open */ |
|
1235 netif_carrier_off(netdev); |
|
1236 } |
|
1237 |
|
1238 e_info(probe, "Intel(R) PRO/1000 Network Connection\n"); |
|
1239 |
|
1240 cards_found++; |
|
1241 return 0; |
|
1242 |
|
1243 err_register: |
|
1244 err_eeprom: |
|
1245 e1000_phy_hw_reset(hw); |
|
1246 |
|
1247 if (hw->flash_address) |
|
1248 iounmap(hw->flash_address); |
|
1249 kfree(adapter->tx_ring); |
|
1250 kfree(adapter->rx_ring); |
|
1251 err_dma: |
|
1252 err_sw_init: |
|
1253 err_mdio_ioremap: |
|
1254 iounmap(ce4100_gbe_mdio_base_virt); |
|
1255 iounmap(hw->hw_addr); |
|
1256 err_ioremap: |
|
1257 free_netdev(netdev); |
|
1258 err_alloc_etherdev: |
|
1259 pci_release_selected_regions(pdev, bars); |
|
1260 err_pci_reg: |
|
1261 pci_disable_device(pdev); |
|
1262 return err; |
|
1263 } |
|
1264 |
|
1265 /** |
|
1266 * e1000_remove - Device Removal Routine |
|
1267 * @pdev: PCI device information struct |
|
1268 * |
|
1269 * e1000_remove is called by the PCI subsystem to alert the driver |
|
1270 * that it should release a PCI device. The could be caused by a |
|
1271 * Hot-Plug event, or because the driver is going to be removed from |
|
1272 * memory. |
|
1273 **/ |
|
1274 |
|
1275 static void __devexit e1000_remove(struct pci_dev *pdev) |
|
1276 { |
|
1277 struct net_device *netdev = pci_get_drvdata(pdev); |
|
1278 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1279 struct e1000_hw *hw = &adapter->hw; |
|
1280 |
|
1281 set_bit(__E1000_DOWN, &adapter->flags); |
|
1282 |
|
1283 if (!adapter->ecdev) { |
|
1284 del_timer_sync(&adapter->tx_fifo_stall_timer); |
|
1285 del_timer_sync(&adapter->watchdog_timer); |
|
1286 del_timer_sync(&adapter->phy_info_timer); |
|
1287 } |
|
1288 |
|
1289 cancel_work_sync(&adapter->reset_task); |
|
1290 |
|
1291 e1000_release_manageability(adapter); |
|
1292 |
|
1293 if (adapter->ecdev) { |
|
1294 ecdev_close(adapter->ecdev); |
|
1295 ecdev_withdraw(adapter->ecdev); |
|
1296 } else { |
|
1297 unregister_netdev(netdev); |
|
1298 } |
|
1299 |
|
1300 e1000_phy_hw_reset(hw); |
|
1301 |
|
1302 kfree(adapter->tx_ring); |
|
1303 kfree(adapter->rx_ring); |
|
1304 |
|
1305 iounmap(hw->hw_addr); |
|
1306 if (hw->flash_address) |
|
1307 iounmap(hw->flash_address); |
|
1308 pci_release_selected_regions(pdev, adapter->bars); |
|
1309 |
|
1310 free_netdev(netdev); |
|
1311 |
|
1312 pci_disable_device(pdev); |
|
1313 } |
|
1314 |
|
1315 /** |
|
1316 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) |
|
1317 * @adapter: board private structure to initialize |
|
1318 * |
|
1319 * e1000_sw_init initializes the Adapter private data structure. |
|
1320 * e1000_init_hw_struct MUST be called before this function |
|
1321 **/ |
|
1322 |
|
1323 static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
|
1324 { |
|
1325 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
1326 |
|
1327 adapter->num_tx_queues = 1; |
|
1328 adapter->num_rx_queues = 1; |
|
1329 |
|
1330 if (e1000_alloc_queues(adapter)) { |
|
1331 e_err(probe, "Unable to allocate memory for queues\n"); |
|
1332 return -ENOMEM; |
|
1333 } |
|
1334 |
|
1335 /* Explicitly disable IRQ since the NIC can be in any state. */ |
|
1336 e1000_irq_disable(adapter); |
|
1337 |
|
1338 spin_lock_init(&adapter->stats_lock); |
|
1339 |
|
1340 set_bit(__E1000_DOWN, &adapter->flags); |
|
1341 |
|
1342 return 0; |
|
1343 } |
|
1344 |
|
1345 /** |
|
1346 * e1000_alloc_queues - Allocate memory for all rings |
|
1347 * @adapter: board private structure to initialize |
|
1348 * |
|
1349 * We allocate one ring per queue at run-time since we don't know the |
|
1350 * number of queues at compile-time. |
|
1351 **/ |
|
1352 |
|
1353 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
|
1354 { |
|
1355 adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
|
1356 sizeof(struct e1000_tx_ring), GFP_KERNEL); |
|
1357 if (!adapter->tx_ring) |
|
1358 return -ENOMEM; |
|
1359 |
|
1360 adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
|
1361 sizeof(struct e1000_rx_ring), GFP_KERNEL); |
|
1362 if (!adapter->rx_ring) { |
|
1363 kfree(adapter->tx_ring); |
|
1364 return -ENOMEM; |
|
1365 } |
|
1366 |
|
1367 return E1000_SUCCESS; |
|
1368 } |
|
1369 |
|
1370 /** |
|
1371 * e1000_open - Called when a network interface is made active |
|
1372 * @netdev: network interface device structure |
|
1373 * |
|
1374 * Returns 0 on success, negative value on failure |
|
1375 * |
|
1376 * The open entry point is called when a network interface is made |
|
1377 * active by the system (IFF_UP). At this point all resources needed |
|
1378 * for transmit and receive operations are allocated, the interrupt |
|
1379 * handler is registered with the OS, the watchdog timer is started, |
|
1380 * and the stack is notified that the interface is ready. |
|
1381 **/ |
|
1382 |
|
1383 static int e1000_open(struct net_device *netdev) |
|
1384 { |
|
1385 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1386 struct e1000_hw *hw = &adapter->hw; |
|
1387 int err; |
|
1388 |
|
1389 /* disallow open during test */ |
|
1390 if (test_bit(__E1000_TESTING, &adapter->flags)) |
|
1391 return -EBUSY; |
|
1392 |
|
1393 netif_carrier_off(netdev); |
|
1394 |
|
1395 /* allocate transmit descriptors */ |
|
1396 err = e1000_setup_all_tx_resources(adapter); |
|
1397 if (err) |
|
1398 goto err_setup_tx; |
|
1399 |
|
1400 /* allocate receive descriptors */ |
|
1401 err = e1000_setup_all_rx_resources(adapter); |
|
1402 if (err) |
|
1403 goto err_setup_rx; |
|
1404 |
|
1405 e1000_power_up_phy(adapter); |
|
1406 |
|
1407 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
1408 if ((hw->mng_cookie.status & |
|
1409 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
|
1410 e1000_update_mng_vlan(adapter); |
|
1411 } |
|
1412 |
|
1413 /* before we allocate an interrupt, we must be ready to handle it. |
|
1414 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
|
1415 * as soon as we call pci_request_irq, so we have to setup our |
|
1416 * clean_rx handler before we do so. */ |
|
1417 e1000_configure(adapter); |
|
1418 |
|
1419 err = e1000_request_irq(adapter); |
|
1420 if (err) |
|
1421 goto err_req_irq; |
|
1422 |
|
1423 /* From here on the code is the same as e1000_up() */ |
|
1424 clear_bit(__E1000_DOWN, &adapter->flags); |
|
1425 |
|
1426 napi_enable(&adapter->napi); |
|
1427 |
|
1428 e1000_irq_enable(adapter); |
|
1429 |
|
1430 netif_start_queue(netdev); |
|
1431 |
|
1432 /* fire a link status change interrupt to start the watchdog */ |
|
1433 ew32(ICS, E1000_ICS_LSC); |
|
1434 |
|
1435 return E1000_SUCCESS; |
|
1436 |
|
1437 err_req_irq: |
|
1438 e1000_power_down_phy(adapter); |
|
1439 e1000_free_all_rx_resources(adapter); |
|
1440 err_setup_rx: |
|
1441 e1000_free_all_tx_resources(adapter); |
|
1442 err_setup_tx: |
|
1443 e1000_reset(adapter); |
|
1444 |
|
1445 return err; |
|
1446 } |
|
1447 |
|
1448 /** |
|
1449 * e1000_close - Disables a network interface |
|
1450 * @netdev: network interface device structure |
|
1451 * |
|
1452 * Returns 0, this is not allowed to fail |
|
1453 * |
|
1454 * The close entry point is called when an interface is de-activated |
|
1455 * by the OS. The hardware is still under the drivers control, but |
|
1456 * needs to be disabled. A global MAC reset is issued to stop the |
|
1457 * hardware, and all transmit and receive resources are freed. |
|
1458 **/ |
|
1459 |
|
1460 static int e1000_close(struct net_device *netdev) |
|
1461 { |
|
1462 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
1463 struct e1000_hw *hw = &adapter->hw; |
|
1464 |
|
1465 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
1466 e1000_down(adapter); |
|
1467 e1000_power_down_phy(adapter); |
|
1468 e1000_free_irq(adapter); |
|
1469 |
|
1470 e1000_free_all_tx_resources(adapter); |
|
1471 e1000_free_all_rx_resources(adapter); |
|
1472 |
|
1473 /* kill manageability vlan ID if supported, but not if a vlan with |
|
1474 * the same ID is registered on the host OS (let 8021q kill it) */ |
|
1475 if ((hw->mng_cookie.status & |
|
1476 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
1477 !(adapter->vlgrp && |
|
1478 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
|
1479 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
1480 } |
|
1481 |
|
1482 return 0; |
|
1483 } |
|
1484 |
|
1485 /** |
|
1486 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary |
|
1487 * @adapter: address of board private structure |
|
1488 * @start: address of beginning of memory |
|
1489 * @len: length of memory |
|
1490 **/ |
|
1491 static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
|
1492 unsigned long len) |
|
1493 { |
|
1494 struct e1000_hw *hw = &adapter->hw; |
|
1495 unsigned long begin = (unsigned long)start; |
|
1496 unsigned long end = begin + len; |
|
1497 |
|
1498 /* First rev 82545 and 82546 need to not allow any memory |
|
1499 * write location to cross 64k boundary due to errata 23 */ |
|
1500 if (hw->mac_type == e1000_82545 || |
|
1501 hw->mac_type == e1000_ce4100 || |
|
1502 hw->mac_type == e1000_82546) { |
|
1503 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
|
1504 } |
|
1505 |
|
1506 return true; |
|
1507 } |
|
1508 |
|
1509 /** |
|
1510 * e1000_setup_tx_resources - allocate Tx resources (Descriptors) |
|
1511 * @adapter: board private structure |
|
1512 * @txdr: tx descriptor ring (for a specific queue) to setup |
|
1513 * |
|
1514 * Return 0 on success, negative on failure |
|
1515 **/ |
|
1516 |
|
1517 static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
|
1518 struct e1000_tx_ring *txdr) |
|
1519 { |
|
1520 struct pci_dev *pdev = adapter->pdev; |
|
1521 int size; |
|
1522 |
|
1523 size = sizeof(struct e1000_buffer) * txdr->count; |
|
1524 txdr->buffer_info = vzalloc(size); |
|
1525 if (!txdr->buffer_info) { |
|
1526 e_err(probe, "Unable to allocate memory for the Tx descriptor " |
|
1527 "ring\n"); |
|
1528 return -ENOMEM; |
|
1529 } |
|
1530 |
|
1531 /* round up to nearest 4K */ |
|
1532 |
|
1533 txdr->size = txdr->count * sizeof(struct e1000_tx_desc); |
|
1534 txdr->size = ALIGN(txdr->size, 4096); |
|
1535 |
|
1536 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma, |
|
1537 GFP_KERNEL); |
|
1538 if (!txdr->desc) { |
|
1539 setup_tx_desc_die: |
|
1540 vfree(txdr->buffer_info); |
|
1541 e_err(probe, "Unable to allocate memory for the Tx descriptor " |
|
1542 "ring\n"); |
|
1543 return -ENOMEM; |
|
1544 } |
|
1545 |
|
1546 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1547 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1548 void *olddesc = txdr->desc; |
|
1549 dma_addr_t olddma = txdr->dma; |
|
1550 e_err(tx_err, "txdr align check failed: %u bytes at %p\n", |
|
1551 txdr->size, txdr->desc); |
|
1552 /* Try again, without freeing the previous */ |
|
1553 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, |
|
1554 &txdr->dma, GFP_KERNEL); |
|
1555 /* Failed allocation, critical failure */ |
|
1556 if (!txdr->desc) { |
|
1557 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1558 olddma); |
|
1559 goto setup_tx_desc_die; |
|
1560 } |
|
1561 |
|
1562 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
|
1563 /* give up */ |
|
1564 dma_free_coherent(&pdev->dev, txdr->size, txdr->desc, |
|
1565 txdr->dma); |
|
1566 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1567 olddma); |
|
1568 e_err(probe, "Unable to allocate aligned memory " |
|
1569 "for the transmit descriptor ring\n"); |
|
1570 vfree(txdr->buffer_info); |
|
1571 return -ENOMEM; |
|
1572 } else { |
|
1573 /* Free old allocation, new allocation was successful */ |
|
1574 dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
|
1575 olddma); |
|
1576 } |
|
1577 } |
|
1578 memset(txdr->desc, 0, txdr->size); |
|
1579 |
|
1580 txdr->next_to_use = 0; |
|
1581 txdr->next_to_clean = 0; |
|
1582 |
|
1583 return 0; |
|
1584 } |
|
1585 |
|
1586 /** |
|
1587 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources |
|
1588 * (Descriptors) for all queues |
|
1589 * @adapter: board private structure |
|
1590 * |
|
1591 * Return 0 on success, negative on failure |
|
1592 **/ |
|
1593 |
|
1594 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
|
1595 { |
|
1596 int i, err = 0; |
|
1597 |
|
1598 for (i = 0; i < adapter->num_tx_queues; i++) { |
|
1599 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1600 if (err) { |
|
1601 e_err(probe, "Allocation for Tx Queue %u failed\n", i); |
|
1602 for (i-- ; i >= 0; i--) |
|
1603 e1000_free_tx_resources(adapter, |
|
1604 &adapter->tx_ring[i]); |
|
1605 break; |
|
1606 } |
|
1607 } |
|
1608 |
|
1609 return err; |
|
1610 } |
|
1611 |
|
1612 /** |
|
1613 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset |
|
1614 * @adapter: board private structure |
|
1615 * |
|
1616 * Configure the Tx unit of the MAC after a reset. |
|
1617 **/ |
|
1618 |
|
1619 static void e1000_configure_tx(struct e1000_adapter *adapter) |
|
1620 { |
|
1621 u64 tdba; |
|
1622 struct e1000_hw *hw = &adapter->hw; |
|
1623 u32 tdlen, tctl, tipg; |
|
1624 u32 ipgr1, ipgr2; |
|
1625 |
|
1626 /* Setup the HW Tx Head and Tail descriptor pointers */ |
|
1627 |
|
1628 switch (adapter->num_tx_queues) { |
|
1629 case 1: |
|
1630 default: |
|
1631 tdba = adapter->tx_ring[0].dma; |
|
1632 tdlen = adapter->tx_ring[0].count * |
|
1633 sizeof(struct e1000_tx_desc); |
|
1634 ew32(TDLEN, tdlen); |
|
1635 ew32(TDBAH, (tdba >> 32)); |
|
1636 ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); |
|
1637 ew32(TDT, 0); |
|
1638 ew32(TDH, 0); |
|
1639 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
|
1640 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); |
|
1641 break; |
|
1642 } |
|
1643 |
|
1644 /* Set the default values for the Tx Inter Packet Gap timer */ |
|
1645 if ((hw->media_type == e1000_media_type_fiber || |
|
1646 hw->media_type == e1000_media_type_internal_serdes)) |
|
1647 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
|
1648 else |
|
1649 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
|
1650 |
|
1651 switch (hw->mac_type) { |
|
1652 case e1000_82542_rev2_0: |
|
1653 case e1000_82542_rev2_1: |
|
1654 tipg = DEFAULT_82542_TIPG_IPGT; |
|
1655 ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
|
1656 ipgr2 = DEFAULT_82542_TIPG_IPGR2; |
|
1657 break; |
|
1658 default: |
|
1659 ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
|
1660 ipgr2 = DEFAULT_82543_TIPG_IPGR2; |
|
1661 break; |
|
1662 } |
|
1663 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
|
1664 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; |
|
1665 ew32(TIPG, tipg); |
|
1666 |
|
1667 /* Set the Tx Interrupt Delay register */ |
|
1668 |
|
1669 ew32(TIDV, adapter->tx_int_delay); |
|
1670 if (hw->mac_type >= e1000_82540) |
|
1671 ew32(TADV, adapter->tx_abs_int_delay); |
|
1672 |
|
1673 /* Program the Transmit Control Register */ |
|
1674 |
|
1675 tctl = er32(TCTL); |
|
1676 tctl &= ~E1000_TCTL_CT; |
|
1677 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
|
1678 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
|
1679 |
|
1680 e1000_config_collision_dist(hw); |
|
1681 |
|
1682 /* Setup Transmit Descriptor Settings for eop descriptor */ |
|
1683 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
|
1684 |
|
1685 /* only set IDE if we are delaying interrupts using the timers */ |
|
1686 if (adapter->tx_int_delay) |
|
1687 adapter->txd_cmd |= E1000_TXD_CMD_IDE; |
|
1688 |
|
1689 if (hw->mac_type < e1000_82543) |
|
1690 adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
|
1691 else |
|
1692 adapter->txd_cmd |= E1000_TXD_CMD_RS; |
|
1693 |
|
1694 /* Cache if we're 82544 running in PCI-X because we'll |
|
1695 * need this to apply a workaround later in the send path. */ |
|
1696 if (hw->mac_type == e1000_82544 && |
|
1697 hw->bus_type == e1000_bus_type_pcix) |
|
1698 adapter->pcix_82544 = 1; |
|
1699 |
|
1700 ew32(TCTL, tctl); |
|
1701 |
|
1702 } |
|
1703 |
|
1704 /** |
|
1705 * e1000_setup_rx_resources - allocate Rx resources (Descriptors) |
|
1706 * @adapter: board private structure |
|
1707 * @rxdr: rx descriptor ring (for a specific queue) to setup |
|
1708 * |
|
1709 * Returns 0 on success, negative on failure |
|
1710 **/ |
|
1711 |
|
1712 static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
|
1713 struct e1000_rx_ring *rxdr) |
|
1714 { |
|
1715 struct pci_dev *pdev = adapter->pdev; |
|
1716 int size, desc_len; |
|
1717 |
|
1718 size = sizeof(struct e1000_buffer) * rxdr->count; |
|
1719 rxdr->buffer_info = vzalloc(size); |
|
1720 if (!rxdr->buffer_info) { |
|
1721 e_err(probe, "Unable to allocate memory for the Rx descriptor " |
|
1722 "ring\n"); |
|
1723 return -ENOMEM; |
|
1724 } |
|
1725 |
|
1726 desc_len = sizeof(struct e1000_rx_desc); |
|
1727 |
|
1728 /* Round up to nearest 4K */ |
|
1729 |
|
1730 rxdr->size = rxdr->count * desc_len; |
|
1731 rxdr->size = ALIGN(rxdr->size, 4096); |
|
1732 |
|
1733 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, |
|
1734 GFP_KERNEL); |
|
1735 |
|
1736 if (!rxdr->desc) { |
|
1737 e_err(probe, "Unable to allocate memory for the Rx descriptor " |
|
1738 "ring\n"); |
|
1739 setup_rx_desc_die: |
|
1740 vfree(rxdr->buffer_info); |
|
1741 return -ENOMEM; |
|
1742 } |
|
1743 |
|
1744 /* Fix for errata 23, can't cross 64kB boundary */ |
|
1745 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1746 void *olddesc = rxdr->desc; |
|
1747 dma_addr_t olddma = rxdr->dma; |
|
1748 e_err(rx_err, "rxdr align check failed: %u bytes at %p\n", |
|
1749 rxdr->size, rxdr->desc); |
|
1750 /* Try again, without freeing the previous */ |
|
1751 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, |
|
1752 &rxdr->dma, GFP_KERNEL); |
|
1753 /* Failed allocation, critical failure */ |
|
1754 if (!rxdr->desc) { |
|
1755 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1756 olddma); |
|
1757 e_err(probe, "Unable to allocate memory for the Rx " |
|
1758 "descriptor ring\n"); |
|
1759 goto setup_rx_desc_die; |
|
1760 } |
|
1761 |
|
1762 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
|
1763 /* give up */ |
|
1764 dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc, |
|
1765 rxdr->dma); |
|
1766 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1767 olddma); |
|
1768 e_err(probe, "Unable to allocate aligned memory for " |
|
1769 "the Rx descriptor ring\n"); |
|
1770 goto setup_rx_desc_die; |
|
1771 } else { |
|
1772 /* Free old allocation, new allocation was successful */ |
|
1773 dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
|
1774 olddma); |
|
1775 } |
|
1776 } |
|
1777 memset(rxdr->desc, 0, rxdr->size); |
|
1778 |
|
1779 rxdr->next_to_clean = 0; |
|
1780 rxdr->next_to_use = 0; |
|
1781 rxdr->rx_skb_top = NULL; |
|
1782 |
|
1783 return 0; |
|
1784 } |
|
1785 |
|
1786 /** |
|
1787 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources |
|
1788 * (Descriptors) for all queues |
|
1789 * @adapter: board private structure |
|
1790 * |
|
1791 * Return 0 on success, negative on failure |
|
1792 **/ |
|
1793 |
|
1794 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
|
1795 { |
|
1796 int i, err = 0; |
|
1797 |
|
1798 for (i = 0; i < adapter->num_rx_queues; i++) { |
|
1799 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
|
1800 if (err) { |
|
1801 e_err(probe, "Allocation for Rx Queue %u failed\n", i); |
|
1802 for (i-- ; i >= 0; i--) |
|
1803 e1000_free_rx_resources(adapter, |
|
1804 &adapter->rx_ring[i]); |
|
1805 break; |
|
1806 } |
|
1807 } |
|
1808 |
|
1809 return err; |
|
1810 } |
|
1811 |
|
1812 /** |
|
1813 * e1000_setup_rctl - configure the receive control registers |
|
1814 * @adapter: Board private structure |
|
1815 **/ |
|
1816 static void e1000_setup_rctl(struct e1000_adapter *adapter) |
|
1817 { |
|
1818 struct e1000_hw *hw = &adapter->hw; |
|
1819 u32 rctl; |
|
1820 |
|
1821 rctl = er32(RCTL); |
|
1822 |
|
1823 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
|
1824 |
|
1825 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
|
1826 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
|
1827 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
|
1828 |
|
1829 if (hw->tbi_compatibility_on == 1) |
|
1830 rctl |= E1000_RCTL_SBP; |
|
1831 else |
|
1832 rctl &= ~E1000_RCTL_SBP; |
|
1833 |
|
1834 if (adapter->netdev->mtu <= ETH_DATA_LEN) |
|
1835 rctl &= ~E1000_RCTL_LPE; |
|
1836 else |
|
1837 rctl |= E1000_RCTL_LPE; |
|
1838 |
|
1839 /* Setup buffer sizes */ |
|
1840 rctl &= ~E1000_RCTL_SZ_4096; |
|
1841 rctl |= E1000_RCTL_BSEX; |
|
1842 switch (adapter->rx_buffer_len) { |
|
1843 case E1000_RXBUFFER_2048: |
|
1844 default: |
|
1845 rctl |= E1000_RCTL_SZ_2048; |
|
1846 rctl &= ~E1000_RCTL_BSEX; |
|
1847 break; |
|
1848 case E1000_RXBUFFER_4096: |
|
1849 rctl |= E1000_RCTL_SZ_4096; |
|
1850 break; |
|
1851 case E1000_RXBUFFER_8192: |
|
1852 rctl |= E1000_RCTL_SZ_8192; |
|
1853 break; |
|
1854 case E1000_RXBUFFER_16384: |
|
1855 rctl |= E1000_RCTL_SZ_16384; |
|
1856 break; |
|
1857 } |
|
1858 |
|
1859 ew32(RCTL, rctl); |
|
1860 } |
|
1861 |
|
1862 /** |
|
1863 * e1000_configure_rx - Configure 8254x Receive Unit after Reset |
|
1864 * @adapter: board private structure |
|
1865 * |
|
1866 * Configure the Rx unit of the MAC after a reset. |
|
1867 **/ |
|
1868 |
|
1869 static void e1000_configure_rx(struct e1000_adapter *adapter) |
|
1870 { |
|
1871 u64 rdba; |
|
1872 struct e1000_hw *hw = &adapter->hw; |
|
1873 u32 rdlen, rctl, rxcsum; |
|
1874 |
|
1875 if (adapter->netdev->mtu > ETH_DATA_LEN) { |
|
1876 rdlen = adapter->rx_ring[0].count * |
|
1877 sizeof(struct e1000_rx_desc); |
|
1878 adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
|
1879 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; |
|
1880 } else { |
|
1881 rdlen = adapter->rx_ring[0].count * |
|
1882 sizeof(struct e1000_rx_desc); |
|
1883 adapter->clean_rx = e1000_clean_rx_irq; |
|
1884 adapter->alloc_rx_buf = e1000_alloc_rx_buffers; |
|
1885 } |
|
1886 |
|
1887 /* disable receives while setting up the descriptors */ |
|
1888 rctl = er32(RCTL); |
|
1889 ew32(RCTL, rctl & ~E1000_RCTL_EN); |
|
1890 |
|
1891 /* set the Receive Delay Timer Register */ |
|
1892 ew32(RDTR, adapter->rx_int_delay); |
|
1893 |
|
1894 if (hw->mac_type >= e1000_82540) { |
|
1895 ew32(RADV, adapter->rx_abs_int_delay); |
|
1896 if (adapter->itr_setting != 0) |
|
1897 ew32(ITR, 1000000000 / (adapter->itr * 256)); |
|
1898 } |
|
1899 |
|
1900 /* Setup the HW Rx Head and Tail Descriptor Pointers and |
|
1901 * the Base and Length of the Rx Descriptor Ring */ |
|
1902 switch (adapter->num_rx_queues) { |
|
1903 case 1: |
|
1904 default: |
|
1905 rdba = adapter->rx_ring[0].dma; |
|
1906 ew32(RDLEN, rdlen); |
|
1907 ew32(RDBAH, (rdba >> 32)); |
|
1908 ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); |
|
1909 ew32(RDT, 0); |
|
1910 ew32(RDH, 0); |
|
1911 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
|
1912 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); |
|
1913 break; |
|
1914 } |
|
1915 |
|
1916 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
|
1917 if (hw->mac_type >= e1000_82543) { |
|
1918 rxcsum = er32(RXCSUM); |
|
1919 if (adapter->rx_csum) |
|
1920 rxcsum |= E1000_RXCSUM_TUOFL; |
|
1921 else |
|
1922 /* don't need to clear IPPCSE as it defaults to 0 */ |
|
1923 rxcsum &= ~E1000_RXCSUM_TUOFL; |
|
1924 ew32(RXCSUM, rxcsum); |
|
1925 } |
|
1926 |
|
1927 /* Enable Receives */ |
|
1928 ew32(RCTL, rctl); |
|
1929 } |
|
1930 |
|
1931 /** |
|
1932 * e1000_free_tx_resources - Free Tx Resources per Queue |
|
1933 * @adapter: board private structure |
|
1934 * @tx_ring: Tx descriptor ring for a specific queue |
|
1935 * |
|
1936 * Free all transmit software resources |
|
1937 **/ |
|
1938 |
|
1939 static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
|
1940 struct e1000_tx_ring *tx_ring) |
|
1941 { |
|
1942 struct pci_dev *pdev = adapter->pdev; |
|
1943 |
|
1944 e1000_clean_tx_ring(adapter, tx_ring); |
|
1945 |
|
1946 vfree(tx_ring->buffer_info); |
|
1947 tx_ring->buffer_info = NULL; |
|
1948 |
|
1949 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
|
1950 tx_ring->dma); |
|
1951 |
|
1952 tx_ring->desc = NULL; |
|
1953 } |
|
1954 |
|
1955 /** |
|
1956 * e1000_free_all_tx_resources - Free Tx Resources for All Queues |
|
1957 * @adapter: board private structure |
|
1958 * |
|
1959 * Free all transmit software resources |
|
1960 **/ |
|
1961 |
|
1962 void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
|
1963 { |
|
1964 int i; |
|
1965 |
|
1966 for (i = 0; i < adapter->num_tx_queues; i++) |
|
1967 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
|
1968 } |
|
1969 |
|
1970 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
|
1971 struct e1000_buffer *buffer_info) |
|
1972 { |
|
1973 if (adapter->ecdev) { |
|
1974 return; |
|
1975 } |
|
1976 |
|
1977 if (buffer_info->dma) { |
|
1978 if (buffer_info->mapped_as_page) |
|
1979 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
|
1980 buffer_info->length, DMA_TO_DEVICE); |
|
1981 else |
|
1982 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
|
1983 buffer_info->length, |
|
1984 DMA_TO_DEVICE); |
|
1985 buffer_info->dma = 0; |
|
1986 } |
|
1987 if (buffer_info->skb) { |
|
1988 dev_kfree_skb_any(buffer_info->skb); |
|
1989 buffer_info->skb = NULL; |
|
1990 } |
|
1991 buffer_info->time_stamp = 0; |
|
1992 /* buffer_info must be completely set up in the transmit path */ |
|
1993 } |
|
1994 |
|
1995 /** |
|
1996 * e1000_clean_tx_ring - Free Tx Buffers |
|
1997 * @adapter: board private structure |
|
1998 * @tx_ring: ring to be cleaned |
|
1999 **/ |
|
2000 |
|
2001 static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
|
2002 struct e1000_tx_ring *tx_ring) |
|
2003 { |
|
2004 struct e1000_hw *hw = &adapter->hw; |
|
2005 struct e1000_buffer *buffer_info; |
|
2006 unsigned long size; |
|
2007 unsigned int i; |
|
2008 |
|
2009 /* Free all the Tx ring sk_buffs */ |
|
2010 |
|
2011 for (i = 0; i < tx_ring->count; i++) { |
|
2012 buffer_info = &tx_ring->buffer_info[i]; |
|
2013 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
2014 } |
|
2015 |
|
2016 size = sizeof(struct e1000_buffer) * tx_ring->count; |
|
2017 memset(tx_ring->buffer_info, 0, size); |
|
2018 |
|
2019 /* Zero out the descriptor ring */ |
|
2020 |
|
2021 memset(tx_ring->desc, 0, tx_ring->size); |
|
2022 |
|
2023 tx_ring->next_to_use = 0; |
|
2024 tx_ring->next_to_clean = 0; |
|
2025 tx_ring->last_tx_tso = 0; |
|
2026 |
|
2027 writel(0, hw->hw_addr + tx_ring->tdh); |
|
2028 writel(0, hw->hw_addr + tx_ring->tdt); |
|
2029 } |
|
2030 |
|
2031 /** |
|
2032 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues |
|
2033 * @adapter: board private structure |
|
2034 **/ |
|
2035 |
|
2036 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
|
2037 { |
|
2038 int i; |
|
2039 |
|
2040 for (i = 0; i < adapter->num_tx_queues; i++) |
|
2041 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
|
2042 } |
|
2043 |
|
2044 /** |
|
2045 * e1000_free_rx_resources - Free Rx Resources |
|
2046 * @adapter: board private structure |
|
2047 * @rx_ring: ring to clean the resources from |
|
2048 * |
|
2049 * Free all receive software resources |
|
2050 **/ |
|
2051 |
|
2052 static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
|
2053 struct e1000_rx_ring *rx_ring) |
|
2054 { |
|
2055 struct pci_dev *pdev = adapter->pdev; |
|
2056 |
|
2057 e1000_clean_rx_ring(adapter, rx_ring); |
|
2058 |
|
2059 vfree(rx_ring->buffer_info); |
|
2060 rx_ring->buffer_info = NULL; |
|
2061 |
|
2062 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
|
2063 rx_ring->dma); |
|
2064 |
|
2065 rx_ring->desc = NULL; |
|
2066 } |
|
2067 |
|
2068 /** |
|
2069 * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
|
2070 * @adapter: board private structure |
|
2071 * |
|
2072 * Free all receive software resources |
|
2073 **/ |
|
2074 |
|
2075 void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
|
2076 { |
|
2077 int i; |
|
2078 |
|
2079 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2080 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
|
2081 } |
|
2082 |
|
2083 /** |
|
2084 * e1000_clean_rx_ring - Free Rx Buffers per Queue |
|
2085 * @adapter: board private structure |
|
2086 * @rx_ring: ring to free buffers from |
|
2087 **/ |
|
2088 |
|
2089 static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
|
2090 struct e1000_rx_ring *rx_ring) |
|
2091 { |
|
2092 struct e1000_hw *hw = &adapter->hw; |
|
2093 struct e1000_buffer *buffer_info; |
|
2094 struct pci_dev *pdev = adapter->pdev; |
|
2095 unsigned long size; |
|
2096 unsigned int i; |
|
2097 |
|
2098 /* Free all the Rx ring sk_buffs */ |
|
2099 for (i = 0; i < rx_ring->count; i++) { |
|
2100 buffer_info = &rx_ring->buffer_info[i]; |
|
2101 if (buffer_info->dma && |
|
2102 adapter->clean_rx == e1000_clean_rx_irq) { |
|
2103 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
2104 buffer_info->length, |
|
2105 DMA_FROM_DEVICE); |
|
2106 } else if (buffer_info->dma && |
|
2107 adapter->clean_rx == e1000_clean_jumbo_rx_irq) { |
|
2108 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
2109 buffer_info->length, |
|
2110 DMA_FROM_DEVICE); |
|
2111 } |
|
2112 |
|
2113 buffer_info->dma = 0; |
|
2114 if (buffer_info->page) { |
|
2115 put_page(buffer_info->page); |
|
2116 buffer_info->page = NULL; |
|
2117 } |
|
2118 if (buffer_info->skb) { |
|
2119 dev_kfree_skb(buffer_info->skb); |
|
2120 buffer_info->skb = NULL; |
|
2121 } |
|
2122 } |
|
2123 |
|
2124 /* there also may be some cached data from a chained receive */ |
|
2125 if (rx_ring->rx_skb_top) { |
|
2126 dev_kfree_skb(rx_ring->rx_skb_top); |
|
2127 rx_ring->rx_skb_top = NULL; |
|
2128 } |
|
2129 |
|
2130 size = sizeof(struct e1000_buffer) * rx_ring->count; |
|
2131 memset(rx_ring->buffer_info, 0, size); |
|
2132 |
|
2133 /* Zero out the descriptor ring */ |
|
2134 memset(rx_ring->desc, 0, rx_ring->size); |
|
2135 |
|
2136 rx_ring->next_to_clean = 0; |
|
2137 rx_ring->next_to_use = 0; |
|
2138 |
|
2139 writel(0, hw->hw_addr + rx_ring->rdh); |
|
2140 writel(0, hw->hw_addr + rx_ring->rdt); |
|
2141 } |
|
2142 |
|
2143 /** |
|
2144 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues |
|
2145 * @adapter: board private structure |
|
2146 **/ |
|
2147 |
|
2148 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
|
2149 { |
|
2150 int i; |
|
2151 |
|
2152 for (i = 0; i < adapter->num_rx_queues; i++) |
|
2153 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
|
2154 } |
|
2155 |
|
2156 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset |
|
2157 * and memory write and invalidate disabled for certain operations |
|
2158 */ |
|
2159 static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
|
2160 { |
|
2161 struct e1000_hw *hw = &adapter->hw; |
|
2162 struct net_device *netdev = adapter->netdev; |
|
2163 u32 rctl; |
|
2164 |
|
2165 e1000_pci_clear_mwi(hw); |
|
2166 |
|
2167 rctl = er32(RCTL); |
|
2168 rctl |= E1000_RCTL_RST; |
|
2169 ew32(RCTL, rctl); |
|
2170 E1000_WRITE_FLUSH(); |
|
2171 mdelay(5); |
|
2172 |
|
2173 if (!adapter->ecdev && netif_running(netdev)) |
|
2174 e1000_clean_all_rx_rings(adapter); |
|
2175 } |
|
2176 |
|
2177 static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
|
2178 { |
|
2179 struct e1000_hw *hw = &adapter->hw; |
|
2180 struct net_device *netdev = adapter->netdev; |
|
2181 u32 rctl; |
|
2182 |
|
2183 rctl = er32(RCTL); |
|
2184 rctl &= ~E1000_RCTL_RST; |
|
2185 ew32(RCTL, rctl); |
|
2186 E1000_WRITE_FLUSH(); |
|
2187 mdelay(5); |
|
2188 |
|
2189 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
|
2190 e1000_pci_set_mwi(hw); |
|
2191 |
|
2192 if (!adapter->netdev && netif_running(netdev)) { |
|
2193 /* No need to loop, because 82542 supports only 1 queue */ |
|
2194 struct e1000_rx_ring *ring = &adapter->rx_ring[0]; |
|
2195 e1000_configure_rx(adapter); |
|
2196 if (adapter->ecdev) { |
|
2197 /* fill rx ring completely! */ |
|
2198 adapter->alloc_rx_buf(adapter, ring, ring->count); |
|
2199 } else { |
|
2200 /* this one leaves the last ring element unallocated! */ |
|
2201 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
|
2202 } |
|
2203 |
|
2204 } |
|
2205 } |
|
2206 |
|
2207 /** |
|
2208 * e1000_set_mac - Change the Ethernet Address of the NIC |
|
2209 * @netdev: network interface device structure |
|
2210 * @p: pointer to an address structure |
|
2211 * |
|
2212 * Returns 0 on success, negative on failure |
|
2213 **/ |
|
2214 |
|
2215 static int e1000_set_mac(struct net_device *netdev, void *p) |
|
2216 { |
|
2217 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2218 struct e1000_hw *hw = &adapter->hw; |
|
2219 struct sockaddr *addr = p; |
|
2220 |
|
2221 if (!is_valid_ether_addr(addr->sa_data)) |
|
2222 return -EADDRNOTAVAIL; |
|
2223 |
|
2224 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2225 |
|
2226 if (hw->mac_type == e1000_82542_rev2_0) |
|
2227 e1000_enter_82542_rst(adapter); |
|
2228 |
|
2229 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
|
2230 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
|
2231 |
|
2232 e1000_rar_set(hw, hw->mac_addr, 0); |
|
2233 |
|
2234 if (hw->mac_type == e1000_82542_rev2_0) |
|
2235 e1000_leave_82542_rst(adapter); |
|
2236 |
|
2237 return 0; |
|
2238 } |
|
2239 |
|
2240 /** |
|
2241 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
|
2242 * @netdev: network interface device structure |
|
2243 * |
|
2244 * The set_rx_mode entry point is called whenever the unicast or multicast |
|
2245 * address lists or the network interface flags are updated. This routine is |
|
2246 * responsible for configuring the hardware for proper unicast, multicast, |
|
2247 * promiscuous mode, and all-multi behavior. |
|
2248 **/ |
|
2249 |
|
2250 static void e1000_set_rx_mode(struct net_device *netdev) |
|
2251 { |
|
2252 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
2253 struct e1000_hw *hw = &adapter->hw; |
|
2254 struct netdev_hw_addr *ha; |
|
2255 bool use_uc = false; |
|
2256 u32 rctl; |
|
2257 u32 hash_value; |
|
2258 int i, rar_entries = E1000_RAR_ENTRIES; |
|
2259 int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
|
2260 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
|
2261 |
|
2262 if (!mcarray) { |
|
2263 e_err(probe, "memory allocation failed\n"); |
|
2264 return; |
|
2265 } |
|
2266 |
|
2267 /* Check for Promiscuous and All Multicast modes */ |
|
2268 |
|
2269 rctl = er32(RCTL); |
|
2270 |
|
2271 if (netdev->flags & IFF_PROMISC) { |
|
2272 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
|
2273 rctl &= ~E1000_RCTL_VFE; |
|
2274 } else { |
|
2275 if (netdev->flags & IFF_ALLMULTI) |
|
2276 rctl |= E1000_RCTL_MPE; |
|
2277 else |
|
2278 rctl &= ~E1000_RCTL_MPE; |
|
2279 /* Enable VLAN filter if there is a VLAN */ |
|
2280 if (adapter->vlgrp) |
|
2281 rctl |= E1000_RCTL_VFE; |
|
2282 } |
|
2283 |
|
2284 if (netdev_uc_count(netdev) > rar_entries - 1) { |
|
2285 rctl |= E1000_RCTL_UPE; |
|
2286 } else if (!(netdev->flags & IFF_PROMISC)) { |
|
2287 rctl &= ~E1000_RCTL_UPE; |
|
2288 use_uc = true; |
|
2289 } |
|
2290 |
|
2291 ew32(RCTL, rctl); |
|
2292 |
|
2293 /* 82542 2.0 needs to be in reset to write receive address registers */ |
|
2294 |
|
2295 if (hw->mac_type == e1000_82542_rev2_0) |
|
2296 e1000_enter_82542_rst(adapter); |
|
2297 |
|
2298 /* load the first 14 addresses into the exact filters 1-14. Unicast |
|
2299 * addresses take precedence to avoid disabling unicast filtering |
|
2300 * when possible. |
|
2301 * |
|
2302 * RAR 0 is used for the station MAC address |
|
2303 * if there are not 14 addresses, go ahead and clear the filters |
|
2304 */ |
|
2305 i = 1; |
|
2306 if (use_uc) |
|
2307 netdev_for_each_uc_addr(ha, netdev) { |
|
2308 if (i == rar_entries) |
|
2309 break; |
|
2310 e1000_rar_set(hw, ha->addr, i++); |
|
2311 } |
|
2312 |
|
2313 netdev_for_each_mc_addr(ha, netdev) { |
|
2314 if (i == rar_entries) { |
|
2315 /* load any remaining addresses into the hash table */ |
|
2316 u32 hash_reg, hash_bit, mta; |
|
2317 hash_value = e1000_hash_mc_addr(hw, ha->addr); |
|
2318 hash_reg = (hash_value >> 5) & 0x7F; |
|
2319 hash_bit = hash_value & 0x1F; |
|
2320 mta = (1 << hash_bit); |
|
2321 mcarray[hash_reg] |= mta; |
|
2322 } else { |
|
2323 e1000_rar_set(hw, ha->addr, i++); |
|
2324 } |
|
2325 } |
|
2326 |
|
2327 for (; i < rar_entries; i++) { |
|
2328 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); |
|
2329 E1000_WRITE_FLUSH(); |
|
2330 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
|
2331 E1000_WRITE_FLUSH(); |
|
2332 } |
|
2333 |
|
2334 /* write the hash table completely, write from bottom to avoid |
|
2335 * both stupid write combining chipsets, and flushing each write */ |
|
2336 for (i = mta_reg_count - 1; i >= 0 ; i--) { |
|
2337 /* |
|
2338 * If we are on an 82544 has an errata where writing odd |
|
2339 * offsets overwrites the previous even offset, but writing |
|
2340 * backwards over the range solves the issue by always |
|
2341 * writing the odd offset first |
|
2342 */ |
|
2343 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); |
|
2344 } |
|
2345 E1000_WRITE_FLUSH(); |
|
2346 |
|
2347 if (hw->mac_type == e1000_82542_rev2_0) |
|
2348 e1000_leave_82542_rst(adapter); |
|
2349 |
|
2350 kfree(mcarray); |
|
2351 } |
|
2352 |
|
2353 /* Need to wait a few seconds after link up to get diagnostic information from |
|
2354 * the phy */ |
|
2355 |
|
2356 static void e1000_update_phy_info(unsigned long data) |
|
2357 { |
|
2358 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2359 schedule_work(&adapter->phy_info_task); |
|
2360 } |
|
2361 |
|
2362 static void e1000_update_phy_info_task(struct work_struct *work) |
|
2363 { |
|
2364 struct e1000_adapter *adapter = container_of(work, |
|
2365 struct e1000_adapter, |
|
2366 phy_info_task); |
|
2367 struct e1000_hw *hw = &adapter->hw; |
|
2368 |
|
2369 rtnl_lock(); |
|
2370 e1000_phy_get_info(hw, &adapter->phy_info); |
|
2371 rtnl_unlock(); |
|
2372 } |
|
2373 |
|
2374 /** |
|
2375 * e1000_82547_tx_fifo_stall - Timer Call-back |
|
2376 * @data: pointer to adapter cast into an unsigned long |
|
2377 **/ |
|
2378 static void e1000_82547_tx_fifo_stall(unsigned long data) |
|
2379 { |
|
2380 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2381 schedule_work(&adapter->fifo_stall_task); |
|
2382 } |
|
2383 |
|
2384 /** |
|
2385 * e1000_82547_tx_fifo_stall_task - task to complete work |
|
2386 * @work: work struct contained inside adapter struct |
|
2387 **/ |
|
2388 static void e1000_82547_tx_fifo_stall_task(struct work_struct *work) |
|
2389 { |
|
2390 struct e1000_adapter *adapter = container_of(work, |
|
2391 struct e1000_adapter, |
|
2392 fifo_stall_task); |
|
2393 struct e1000_hw *hw = &adapter->hw; |
|
2394 struct net_device *netdev = adapter->netdev; |
|
2395 u32 tctl; |
|
2396 |
|
2397 rtnl_lock(); |
|
2398 if (atomic_read(&adapter->tx_fifo_stall)) { |
|
2399 if ((er32(TDT) == er32(TDH)) && |
|
2400 (er32(TDFT) == er32(TDFH)) && |
|
2401 (er32(TDFTS) == er32(TDFHS))) { |
|
2402 tctl = er32(TCTL); |
|
2403 ew32(TCTL, tctl & ~E1000_TCTL_EN); |
|
2404 ew32(TDFT, adapter->tx_head_addr); |
|
2405 ew32(TDFH, adapter->tx_head_addr); |
|
2406 ew32(TDFTS, adapter->tx_head_addr); |
|
2407 ew32(TDFHS, adapter->tx_head_addr); |
|
2408 ew32(TCTL, tctl); |
|
2409 E1000_WRITE_FLUSH(); |
|
2410 |
|
2411 adapter->tx_fifo_head = 0; |
|
2412 atomic_set(&adapter->tx_fifo_stall, 0); |
|
2413 if (!adapter->ecdev) { |
|
2414 netif_wake_queue(netdev); |
|
2415 } |
|
2416 } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
|
2417 if (!adapter->ecdev) { |
|
2418 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
|
2419 } |
|
2420 } |
|
2421 } |
|
2422 rtnl_unlock(); |
|
2423 } |
|
2424 |
|
2425 bool e1000_has_link(struct e1000_adapter *adapter) |
|
2426 { |
|
2427 struct e1000_hw *hw = &adapter->hw; |
|
2428 bool link_active = false; |
|
2429 |
|
2430 /* get_link_status is set on LSC (link status) interrupt or |
|
2431 * rx sequence error interrupt. get_link_status will stay |
|
2432 * false until the e1000_check_for_link establishes link |
|
2433 * for copper adapters ONLY |
|
2434 */ |
|
2435 switch (hw->media_type) { |
|
2436 case e1000_media_type_copper: |
|
2437 if (hw->get_link_status) { |
|
2438 e1000_check_for_link(hw); |
|
2439 link_active = !hw->get_link_status; |
|
2440 } else { |
|
2441 link_active = true; |
|
2442 } |
|
2443 break; |
|
2444 case e1000_media_type_fiber: |
|
2445 e1000_check_for_link(hw); |
|
2446 link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
|
2447 break; |
|
2448 case e1000_media_type_internal_serdes: |
|
2449 e1000_check_for_link(hw); |
|
2450 link_active = hw->serdes_has_link; |
|
2451 break; |
|
2452 default: |
|
2453 break; |
|
2454 } |
|
2455 |
|
2456 return link_active; |
|
2457 } |
|
2458 |
|
2459 /** |
|
2460 * e1000_watchdog - Timer Call-back |
|
2461 * @data: pointer to adapter cast into an unsigned long |
|
2462 **/ |
|
2463 static void e1000_watchdog(unsigned long data) |
|
2464 { |
|
2465 struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
|
2466 struct e1000_hw *hw = &adapter->hw; |
|
2467 struct net_device *netdev = adapter->netdev; |
|
2468 struct e1000_tx_ring *txdr = adapter->tx_ring; |
|
2469 u32 link, tctl; |
|
2470 |
|
2471 link = e1000_has_link(adapter); |
|
2472 if (!adapter->ecdev && (netif_carrier_ok(netdev)) && link) |
|
2473 goto link_up; |
|
2474 |
|
2475 if (link) { |
|
2476 if ((adapter->ecdev && !ecdev_get_link(adapter->ecdev)) |
|
2477 || (!adapter->ecdev && !netif_carrier_ok(netdev))) { |
|
2478 u32 ctrl; |
|
2479 bool txb2b __attribute__ ((unused)) = true; |
|
2480 /* update snapshot of PHY registers on LSC */ |
|
2481 e1000_get_speed_and_duplex(hw, |
|
2482 &adapter->link_speed, |
|
2483 &adapter->link_duplex); |
|
2484 |
|
2485 ctrl = er32(CTRL); |
|
2486 pr_info("%s NIC Link is Up %d Mbps %s, " |
|
2487 "Flow Control: %s\n", |
|
2488 netdev->name, |
|
2489 adapter->link_speed, |
|
2490 adapter->link_duplex == FULL_DUPLEX ? |
|
2491 "Full Duplex" : "Half Duplex", |
|
2492 ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
|
2493 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
|
2494 E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
|
2495 E1000_CTRL_TFCE) ? "TX" : "None"))); |
|
2496 |
|
2497 /* adjust timeout factor according to speed/duplex */ |
|
2498 adapter->tx_timeout_factor = 1; |
|
2499 switch (adapter->link_speed) { |
|
2500 case SPEED_10: |
|
2501 txb2b = false; |
|
2502 adapter->tx_timeout_factor = 16; |
|
2503 break; |
|
2504 case SPEED_100: |
|
2505 txb2b = false; |
|
2506 /* maybe add some timeout factor ? */ |
|
2507 break; |
|
2508 } |
|
2509 |
|
2510 /* enable transmits in the hardware */ |
|
2511 tctl = er32(TCTL); |
|
2512 tctl |= E1000_TCTL_EN; |
|
2513 ew32(TCTL, tctl); |
|
2514 |
|
2515 if (adapter->ecdev) { |
|
2516 ecdev_set_link(adapter->ecdev, 1); |
|
2517 } else { |
|
2518 netif_carrier_on(netdev); |
|
2519 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2520 mod_timer(&adapter->phy_info_timer, |
|
2521 round_jiffies(jiffies + 2 * HZ)); |
|
2522 } |
|
2523 adapter->smartspeed = 0; |
|
2524 } |
|
2525 } else { |
|
2526 if ((adapter->ecdev && ecdev_get_link(adapter->ecdev)) |
|
2527 || (!adapter->ecdev && netif_carrier_ok(netdev))) { |
|
2528 adapter->link_speed = 0; |
|
2529 adapter->link_duplex = 0; |
|
2530 pr_info("%s NIC Link is Down\n", |
|
2531 netdev->name); |
|
2532 if (adapter->ecdev) { |
|
2533 ecdev_set_link(adapter->ecdev, 0); |
|
2534 } else { |
|
2535 netif_carrier_off(netdev); |
|
2536 |
|
2537 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2538 mod_timer(&adapter->phy_info_timer, |
|
2539 round_jiffies(jiffies + 2 * HZ)); |
|
2540 } |
|
2541 } |
|
2542 |
|
2543 e1000_smartspeed(adapter); |
|
2544 } |
|
2545 |
|
2546 link_up: |
|
2547 e1000_update_stats(adapter); |
|
2548 |
|
2549 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
|
2550 adapter->tpt_old = adapter->stats.tpt; |
|
2551 hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
|
2552 adapter->colc_old = adapter->stats.colc; |
|
2553 |
|
2554 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; |
|
2555 adapter->gorcl_old = adapter->stats.gorcl; |
|
2556 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; |
|
2557 adapter->gotcl_old = adapter->stats.gotcl; |
|
2558 |
|
2559 e1000_update_adaptive(hw); |
|
2560 |
|
2561 if (!adapter->ecdev && !netif_carrier_ok(netdev)) { |
|
2562 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
|
2563 /* We've lost link, so the controller stops DMA, |
|
2564 * but we've got queued Tx work that's never going |
|
2565 * to get done, so reset controller to flush Tx. |
|
2566 * (Do the reset outside of interrupt context). */ |
|
2567 adapter->tx_timeout_count++; |
|
2568 schedule_work(&adapter->reset_task); |
|
2569 /* return immediately since reset is imminent */ |
|
2570 return; |
|
2571 } |
|
2572 } |
|
2573 |
|
2574 /* Simple mode for Interrupt Throttle Rate (ITR) */ |
|
2575 if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { |
|
2576 /* |
|
2577 * Symmetric Tx/Rx gets a reduced ITR=2000; |
|
2578 * Total asymmetrical Tx or Rx gets ITR=8000; |
|
2579 * everyone else is between 2000-8000. |
|
2580 */ |
|
2581 u32 goc = (adapter->gotcl + adapter->gorcl) / 10000; |
|
2582 u32 dif = (adapter->gotcl > adapter->gorcl ? |
|
2583 adapter->gotcl - adapter->gorcl : |
|
2584 adapter->gorcl - adapter->gotcl) / 10000; |
|
2585 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
|
2586 |
|
2587 ew32(ITR, 1000000000 / (itr * 256)); |
|
2588 } |
|
2589 |
|
2590 /* Cause software interrupt to ensure rx ring is cleaned */ |
|
2591 ew32(ICS, E1000_ICS_RXDMT0); |
|
2592 |
|
2593 /* Force detection of hung controller every watchdog period */ |
|
2594 if (!adapter->ecdev) { |
|
2595 adapter->detect_tx_hung = true; |
|
2596 } |
|
2597 |
|
2598 /* Reset the timer */ |
|
2599 if (!adapter->ecdev) { |
|
2600 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
2601 mod_timer(&adapter->watchdog_timer, |
|
2602 round_jiffies(jiffies + 2 * HZ)); |
|
2603 } |
|
2604 } |
|
2605 |
|
2606 enum latency_range { |
|
2607 lowest_latency = 0, |
|
2608 low_latency = 1, |
|
2609 bulk_latency = 2, |
|
2610 latency_invalid = 255 |
|
2611 }; |
|
2612 |
|
2613 /** |
|
2614 * e1000_update_itr - update the dynamic ITR value based on statistics |
|
2615 * @adapter: pointer to adapter |
|
2616 * @itr_setting: current adapter->itr |
|
2617 * @packets: the number of packets during this measurement interval |
|
2618 * @bytes: the number of bytes during this measurement interval |
|
2619 * |
|
2620 * Stores a new ITR value based on packets and byte |
|
2621 * counts during the last interrupt. The advantage of per interrupt |
|
2622 * computation is faster updates and more accurate ITR for the current |
|
2623 * traffic pattern. Constants in this function were computed |
|
2624 * based on theoretical maximum wire speed and thresholds were set based |
|
2625 * on testing data as well as attempting to minimize response time |
|
2626 * while increasing bulk throughput. |
|
2627 * this functionality is controlled by the InterruptThrottleRate module |
|
2628 * parameter (see e1000_param.c) |
|
2629 **/ |
|
2630 static unsigned int e1000_update_itr(struct e1000_adapter *adapter, |
|
2631 u16 itr_setting, int packets, int bytes) |
|
2632 { |
|
2633 unsigned int retval = itr_setting; |
|
2634 struct e1000_hw *hw = &adapter->hw; |
|
2635 |
|
2636 if (unlikely(hw->mac_type < e1000_82540)) |
|
2637 goto update_itr_done; |
|
2638 |
|
2639 if (packets == 0) |
|
2640 goto update_itr_done; |
|
2641 |
|
2642 switch (itr_setting) { |
|
2643 case lowest_latency: |
|
2644 /* jumbo frames get bulk treatment*/ |
|
2645 if (bytes/packets > 8000) |
|
2646 retval = bulk_latency; |
|
2647 else if ((packets < 5) && (bytes > 512)) |
|
2648 retval = low_latency; |
|
2649 break; |
|
2650 case low_latency: /* 50 usec aka 20000 ints/s */ |
|
2651 if (bytes > 10000) { |
|
2652 /* jumbo frames need bulk latency setting */ |
|
2653 if (bytes/packets > 8000) |
|
2654 retval = bulk_latency; |
|
2655 else if ((packets < 10) || ((bytes/packets) > 1200)) |
|
2656 retval = bulk_latency; |
|
2657 else if ((packets > 35)) |
|
2658 retval = lowest_latency; |
|
2659 } else if (bytes/packets > 2000) |
|
2660 retval = bulk_latency; |
|
2661 else if (packets <= 2 && bytes < 512) |
|
2662 retval = lowest_latency; |
|
2663 break; |
|
2664 case bulk_latency: /* 250 usec aka 4000 ints/s */ |
|
2665 if (bytes > 25000) { |
|
2666 if (packets > 35) |
|
2667 retval = low_latency; |
|
2668 } else if (bytes < 6000) { |
|
2669 retval = low_latency; |
|
2670 } |
|
2671 break; |
|
2672 } |
|
2673 |
|
2674 update_itr_done: |
|
2675 return retval; |
|
2676 } |
|
2677 |
|
2678 static void e1000_set_itr(struct e1000_adapter *adapter) |
|
2679 { |
|
2680 struct e1000_hw *hw = &adapter->hw; |
|
2681 u16 current_itr; |
|
2682 u32 new_itr = adapter->itr; |
|
2683 |
|
2684 if (unlikely(hw->mac_type < e1000_82540)) |
|
2685 return; |
|
2686 |
|
2687 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
|
2688 if (unlikely(adapter->link_speed != SPEED_1000)) { |
|
2689 current_itr = 0; |
|
2690 new_itr = 4000; |
|
2691 goto set_itr_now; |
|
2692 } |
|
2693 |
|
2694 adapter->tx_itr = e1000_update_itr(adapter, |
|
2695 adapter->tx_itr, |
|
2696 adapter->total_tx_packets, |
|
2697 adapter->total_tx_bytes); |
|
2698 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2699 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) |
|
2700 adapter->tx_itr = low_latency; |
|
2701 |
|
2702 adapter->rx_itr = e1000_update_itr(adapter, |
|
2703 adapter->rx_itr, |
|
2704 adapter->total_rx_packets, |
|
2705 adapter->total_rx_bytes); |
|
2706 /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
|
2707 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
|
2708 adapter->rx_itr = low_latency; |
|
2709 |
|
2710 current_itr = max(adapter->rx_itr, adapter->tx_itr); |
|
2711 |
|
2712 switch (current_itr) { |
|
2713 /* counts and packets in update_itr are dependent on these numbers */ |
|
2714 case lowest_latency: |
|
2715 new_itr = 70000; |
|
2716 break; |
|
2717 case low_latency: |
|
2718 new_itr = 20000; /* aka hwitr = ~200 */ |
|
2719 break; |
|
2720 case bulk_latency: |
|
2721 new_itr = 4000; |
|
2722 break; |
|
2723 default: |
|
2724 break; |
|
2725 } |
|
2726 |
|
2727 set_itr_now: |
|
2728 if (new_itr != adapter->itr) { |
|
2729 /* this attempts to bias the interrupt rate towards Bulk |
|
2730 * by adding intermediate steps when interrupt rate is |
|
2731 * increasing */ |
|
2732 new_itr = new_itr > adapter->itr ? |
|
2733 min(adapter->itr + (new_itr >> 2), new_itr) : |
|
2734 new_itr; |
|
2735 adapter->itr = new_itr; |
|
2736 ew32(ITR, 1000000000 / (new_itr * 256)); |
|
2737 } |
|
2738 } |
|
2739 |
|
2740 #define E1000_TX_FLAGS_CSUM 0x00000001 |
|
2741 #define E1000_TX_FLAGS_VLAN 0x00000002 |
|
2742 #define E1000_TX_FLAGS_TSO 0x00000004 |
|
2743 #define E1000_TX_FLAGS_IPV4 0x00000008 |
|
2744 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
|
2745 #define E1000_TX_FLAGS_VLAN_SHIFT 16 |
|
2746 |
|
2747 static int e1000_tso(struct e1000_adapter *adapter, |
|
2748 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2749 { |
|
2750 struct e1000_context_desc *context_desc; |
|
2751 struct e1000_buffer *buffer_info; |
|
2752 unsigned int i; |
|
2753 u32 cmd_length = 0; |
|
2754 u16 ipcse = 0, tucse, mss; |
|
2755 u8 ipcss, ipcso, tucss, tucso, hdr_len; |
|
2756 int err; |
|
2757 |
|
2758 if (skb_is_gso(skb)) { |
|
2759 if (skb_header_cloned(skb)) { |
|
2760 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
|
2761 if (err) |
|
2762 return err; |
|
2763 } |
|
2764 |
|
2765 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
2766 mss = skb_shinfo(skb)->gso_size; |
|
2767 if (skb->protocol == htons(ETH_P_IP)) { |
|
2768 struct iphdr *iph = ip_hdr(skb); |
|
2769 iph->tot_len = 0; |
|
2770 iph->check = 0; |
|
2771 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
|
2772 iph->daddr, 0, |
|
2773 IPPROTO_TCP, |
|
2774 0); |
|
2775 cmd_length = E1000_TXD_CMD_IP; |
|
2776 ipcse = skb_transport_offset(skb) - 1; |
|
2777 } else if (skb->protocol == htons(ETH_P_IPV6)) { |
|
2778 ipv6_hdr(skb)->payload_len = 0; |
|
2779 tcp_hdr(skb)->check = |
|
2780 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
|
2781 &ipv6_hdr(skb)->daddr, |
|
2782 0, IPPROTO_TCP, 0); |
|
2783 ipcse = 0; |
|
2784 } |
|
2785 ipcss = skb_network_offset(skb); |
|
2786 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
|
2787 tucss = skb_transport_offset(skb); |
|
2788 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
|
2789 tucse = 0; |
|
2790 |
|
2791 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | |
|
2792 E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
|
2793 |
|
2794 i = tx_ring->next_to_use; |
|
2795 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2796 buffer_info = &tx_ring->buffer_info[i]; |
|
2797 |
|
2798 context_desc->lower_setup.ip_fields.ipcss = ipcss; |
|
2799 context_desc->lower_setup.ip_fields.ipcso = ipcso; |
|
2800 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); |
|
2801 context_desc->upper_setup.tcp_fields.tucss = tucss; |
|
2802 context_desc->upper_setup.tcp_fields.tucso = tucso; |
|
2803 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); |
|
2804 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
|
2805 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
|
2806 context_desc->cmd_and_length = cpu_to_le32(cmd_length); |
|
2807 |
|
2808 buffer_info->time_stamp = jiffies; |
|
2809 buffer_info->next_to_watch = i; |
|
2810 |
|
2811 if (++i == tx_ring->count) i = 0; |
|
2812 tx_ring->next_to_use = i; |
|
2813 |
|
2814 return true; |
|
2815 } |
|
2816 return false; |
|
2817 } |
|
2818 |
|
2819 static bool e1000_tx_csum(struct e1000_adapter *adapter, |
|
2820 struct e1000_tx_ring *tx_ring, struct sk_buff *skb) |
|
2821 { |
|
2822 struct e1000_context_desc *context_desc; |
|
2823 struct e1000_buffer *buffer_info; |
|
2824 unsigned int i; |
|
2825 u8 css; |
|
2826 u32 cmd_len = E1000_TXD_CMD_DEXT; |
|
2827 |
|
2828 if (skb->ip_summed != CHECKSUM_PARTIAL) |
|
2829 return false; |
|
2830 |
|
2831 switch (skb->protocol) { |
|
2832 case cpu_to_be16(ETH_P_IP): |
|
2833 if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
|
2834 cmd_len |= E1000_TXD_CMD_TCP; |
|
2835 break; |
|
2836 case cpu_to_be16(ETH_P_IPV6): |
|
2837 /* XXX not handling all IPV6 headers */ |
|
2838 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
|
2839 cmd_len |= E1000_TXD_CMD_TCP; |
|
2840 break; |
|
2841 default: |
|
2842 if (unlikely(net_ratelimit())) |
|
2843 e_warn(drv, "checksum_partial proto=%x!\n", |
|
2844 skb->protocol); |
|
2845 break; |
|
2846 } |
|
2847 |
|
2848 css = skb_checksum_start_offset(skb); |
|
2849 |
|
2850 i = tx_ring->next_to_use; |
|
2851 buffer_info = &tx_ring->buffer_info[i]; |
|
2852 context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
|
2853 |
|
2854 context_desc->lower_setup.ip_config = 0; |
|
2855 context_desc->upper_setup.tcp_fields.tucss = css; |
|
2856 context_desc->upper_setup.tcp_fields.tucso = |
|
2857 css + skb->csum_offset; |
|
2858 context_desc->upper_setup.tcp_fields.tucse = 0; |
|
2859 context_desc->tcp_seg_setup.data = 0; |
|
2860 context_desc->cmd_and_length = cpu_to_le32(cmd_len); |
|
2861 |
|
2862 buffer_info->time_stamp = jiffies; |
|
2863 buffer_info->next_to_watch = i; |
|
2864 |
|
2865 if (unlikely(++i == tx_ring->count)) i = 0; |
|
2866 tx_ring->next_to_use = i; |
|
2867 |
|
2868 return true; |
|
2869 } |
|
2870 |
|
2871 #define E1000_MAX_TXD_PWR 12 |
|
2872 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) |
|
2873 |
|
2874 static int e1000_tx_map(struct e1000_adapter *adapter, |
|
2875 struct e1000_tx_ring *tx_ring, |
|
2876 struct sk_buff *skb, unsigned int first, |
|
2877 unsigned int max_per_txd, unsigned int nr_frags, |
|
2878 unsigned int mss) |
|
2879 { |
|
2880 struct e1000_hw *hw = &adapter->hw; |
|
2881 struct pci_dev *pdev = adapter->pdev; |
|
2882 struct e1000_buffer *buffer_info; |
|
2883 unsigned int len = skb_headlen(skb); |
|
2884 unsigned int offset = 0, size, count = 0, i; |
|
2885 unsigned int f; |
|
2886 |
|
2887 i = tx_ring->next_to_use; |
|
2888 |
|
2889 while (len) { |
|
2890 buffer_info = &tx_ring->buffer_info[i]; |
|
2891 size = min(len, max_per_txd); |
|
2892 /* Workaround for Controller erratum -- |
|
2893 * descriptor for non-tso packet in a linear SKB that follows a |
|
2894 * tso gets written back prematurely before the data is fully |
|
2895 * DMA'd to the controller */ |
|
2896 if (!skb->data_len && tx_ring->last_tx_tso && |
|
2897 !skb_is_gso(skb)) { |
|
2898 tx_ring->last_tx_tso = 0; |
|
2899 size -= 4; |
|
2900 } |
|
2901 |
|
2902 /* Workaround for premature desc write-backs |
|
2903 * in TSO mode. Append 4-byte sentinel desc */ |
|
2904 if (unlikely(mss && !nr_frags && size == len && size > 8)) |
|
2905 size -= 4; |
|
2906 /* work-around for errata 10 and it applies |
|
2907 * to all controllers in PCI-X mode |
|
2908 * The fix is to make sure that the first descriptor of a |
|
2909 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes |
|
2910 */ |
|
2911 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
2912 (size > 2015) && count == 0)) |
|
2913 size = 2015; |
|
2914 |
|
2915 /* Workaround for potential 82544 hang in PCI-X. Avoid |
|
2916 * terminating buffers within evenly-aligned dwords. */ |
|
2917 if (unlikely(adapter->pcix_82544 && |
|
2918 !((unsigned long)(skb->data + offset + size - 1) & 4) && |
|
2919 size > 4)) |
|
2920 size -= 4; |
|
2921 |
|
2922 buffer_info->length = size; |
|
2923 /* set time_stamp *before* dma to help avoid a possible race */ |
|
2924 buffer_info->time_stamp = jiffies; |
|
2925 buffer_info->mapped_as_page = false; |
|
2926 buffer_info->dma = dma_map_single(&pdev->dev, |
|
2927 skb->data + offset, |
|
2928 size, DMA_TO_DEVICE); |
|
2929 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
2930 goto dma_error; |
|
2931 buffer_info->next_to_watch = i; |
|
2932 |
|
2933 len -= size; |
|
2934 offset += size; |
|
2935 count++; |
|
2936 if (len) { |
|
2937 i++; |
|
2938 if (unlikely(i == tx_ring->count)) |
|
2939 i = 0; |
|
2940 } |
|
2941 } |
|
2942 |
|
2943 for (f = 0; f < nr_frags; f++) { |
|
2944 struct skb_frag_struct *frag; |
|
2945 |
|
2946 frag = &skb_shinfo(skb)->frags[f]; |
|
2947 len = frag->size; |
|
2948 offset = frag->page_offset; |
|
2949 |
|
2950 while (len) { |
|
2951 i++; |
|
2952 if (unlikely(i == tx_ring->count)) |
|
2953 i = 0; |
|
2954 |
|
2955 buffer_info = &tx_ring->buffer_info[i]; |
|
2956 size = min(len, max_per_txd); |
|
2957 /* Workaround for premature desc write-backs |
|
2958 * in TSO mode. Append 4-byte sentinel desc */ |
|
2959 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
|
2960 size -= 4; |
|
2961 /* Workaround for potential 82544 hang in PCI-X. |
|
2962 * Avoid terminating buffers within evenly-aligned |
|
2963 * dwords. */ |
|
2964 if (unlikely(adapter->pcix_82544 && |
|
2965 !((unsigned long)(page_to_phys(frag->page) + offset |
|
2966 + size - 1) & 4) && |
|
2967 size > 4)) |
|
2968 size -= 4; |
|
2969 |
|
2970 buffer_info->length = size; |
|
2971 buffer_info->time_stamp = jiffies; |
|
2972 buffer_info->mapped_as_page = true; |
|
2973 buffer_info->dma = dma_map_page(&pdev->dev, frag->page, |
|
2974 offset, size, |
|
2975 DMA_TO_DEVICE); |
|
2976 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
|
2977 goto dma_error; |
|
2978 buffer_info->next_to_watch = i; |
|
2979 |
|
2980 len -= size; |
|
2981 offset += size; |
|
2982 count++; |
|
2983 } |
|
2984 } |
|
2985 |
|
2986 tx_ring->buffer_info[i].skb = skb; |
|
2987 tx_ring->buffer_info[first].next_to_watch = i; |
|
2988 |
|
2989 return count; |
|
2990 |
|
2991 dma_error: |
|
2992 dev_err(&pdev->dev, "TX DMA map failed\n"); |
|
2993 buffer_info->dma = 0; |
|
2994 if (count) |
|
2995 count--; |
|
2996 |
|
2997 while (count--) { |
|
2998 if (i==0) |
|
2999 i += tx_ring->count; |
|
3000 i--; |
|
3001 buffer_info = &tx_ring->buffer_info[i]; |
|
3002 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
3003 } |
|
3004 |
|
3005 return 0; |
|
3006 } |
|
3007 |
|
3008 static void e1000_tx_queue(struct e1000_adapter *adapter, |
|
3009 struct e1000_tx_ring *tx_ring, int tx_flags, |
|
3010 int count) |
|
3011 { |
|
3012 struct e1000_hw *hw = &adapter->hw; |
|
3013 struct e1000_tx_desc *tx_desc = NULL; |
|
3014 struct e1000_buffer *buffer_info; |
|
3015 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
|
3016 unsigned int i; |
|
3017 |
|
3018 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
|
3019 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
|
3020 E1000_TXD_CMD_TSE; |
|
3021 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3022 |
|
3023 if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
|
3024 txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
|
3025 } |
|
3026 |
|
3027 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
|
3028 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
|
3029 txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
|
3030 } |
|
3031 |
|
3032 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
|
3033 txd_lower |= E1000_TXD_CMD_VLE; |
|
3034 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); |
|
3035 } |
|
3036 |
|
3037 i = tx_ring->next_to_use; |
|
3038 |
|
3039 while (count--) { |
|
3040 buffer_info = &tx_ring->buffer_info[i]; |
|
3041 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3042 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
3043 tx_desc->lower.data = |
|
3044 cpu_to_le32(txd_lower | buffer_info->length); |
|
3045 tx_desc->upper.data = cpu_to_le32(txd_upper); |
|
3046 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3047 } |
|
3048 |
|
3049 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); |
|
3050 |
|
3051 /* Force memory writes to complete before letting h/w |
|
3052 * know there are new descriptors to fetch. (Only |
|
3053 * applicable for weak-ordered memory model archs, |
|
3054 * such as IA-64). */ |
|
3055 wmb(); |
|
3056 |
|
3057 tx_ring->next_to_use = i; |
|
3058 writel(i, hw->hw_addr + tx_ring->tdt); |
|
3059 /* we need this if more than one processor can write to our tail |
|
3060 * at a time, it syncronizes IO on IA64/Altix systems */ |
|
3061 mmiowb(); |
|
3062 } |
|
3063 |
|
3064 /** |
|
3065 * 82547 workaround to avoid controller hang in half-duplex environment. |
|
3066 * The workaround is to avoid queuing a large packet that would span |
|
3067 * the internal Tx FIFO ring boundary by notifying the stack to resend |
|
3068 * the packet at a later time. This gives the Tx FIFO an opportunity to |
|
3069 * flush all packets. When that occurs, we reset the Tx FIFO pointers |
|
3070 * to the beginning of the Tx FIFO. |
|
3071 **/ |
|
3072 |
|
3073 #define E1000_FIFO_HDR 0x10 |
|
3074 #define E1000_82547_PAD_LEN 0x3E0 |
|
3075 |
|
3076 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
|
3077 struct sk_buff *skb) |
|
3078 { |
|
3079 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
|
3080 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; |
|
3081 |
|
3082 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
|
3083 |
|
3084 if (adapter->link_duplex != HALF_DUPLEX) |
|
3085 goto no_fifo_stall_required; |
|
3086 |
|
3087 if (atomic_read(&adapter->tx_fifo_stall)) |
|
3088 return 1; |
|
3089 |
|
3090 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
|
3091 atomic_set(&adapter->tx_fifo_stall, 1); |
|
3092 return 1; |
|
3093 } |
|
3094 |
|
3095 no_fifo_stall_required: |
|
3096 adapter->tx_fifo_head += skb_fifo_len; |
|
3097 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
|
3098 adapter->tx_fifo_head -= adapter->tx_fifo_size; |
|
3099 return 0; |
|
3100 } |
|
3101 |
|
3102 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
|
3103 { |
|
3104 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3105 struct e1000_tx_ring *tx_ring = adapter->tx_ring; |
|
3106 |
|
3107 netif_stop_queue(netdev); |
|
3108 /* Herbert's original patch had: |
|
3109 * smp_mb__after_netif_stop_queue(); |
|
3110 * but since that doesn't exist yet, just open code it. */ |
|
3111 smp_mb(); |
|
3112 |
|
3113 /* We need to check again in a case another CPU has just |
|
3114 * made room available. */ |
|
3115 if (likely(E1000_DESC_UNUSED(tx_ring) < size)) |
|
3116 return -EBUSY; |
|
3117 |
|
3118 /* A reprieve! */ |
|
3119 netif_start_queue(netdev); |
|
3120 ++adapter->restart_queue; |
|
3121 return 0; |
|
3122 } |
|
3123 |
|
3124 static int e1000_maybe_stop_tx(struct net_device *netdev, |
|
3125 struct e1000_tx_ring *tx_ring, int size) |
|
3126 { |
|
3127 if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) |
|
3128 return 0; |
|
3129 return __e1000_maybe_stop_tx(netdev, size); |
|
3130 } |
|
3131 |
|
3132 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
|
3133 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
|
3134 struct net_device *netdev) |
|
3135 { |
|
3136 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3137 struct e1000_hw *hw = &adapter->hw; |
|
3138 struct e1000_tx_ring *tx_ring; |
|
3139 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
|
3140 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; |
|
3141 unsigned int tx_flags = 0; |
|
3142 unsigned int len = skb_headlen(skb); |
|
3143 unsigned int nr_frags; |
|
3144 unsigned int mss; |
|
3145 int count = 0; |
|
3146 int tso; |
|
3147 unsigned int f; |
|
3148 |
|
3149 /* This goes back to the question of how to logically map a tx queue |
|
3150 * to a flow. Right now, performance is impacted slightly negatively |
|
3151 * if using multiple tx queues. If the stack breaks away from a |
|
3152 * single qdisc implementation, we can look at this again. */ |
|
3153 tx_ring = adapter->tx_ring; |
|
3154 |
|
3155 if (unlikely(skb->len <= 0)) { |
|
3156 if (!adapter->ecdev) { |
|
3157 dev_kfree_skb_any(skb); |
|
3158 } |
|
3159 return NETDEV_TX_OK; |
|
3160 } |
|
3161 |
|
3162 mss = skb_shinfo(skb)->gso_size; |
|
3163 /* The controller does a simple calculation to |
|
3164 * make sure there is enough room in the FIFO before |
|
3165 * initiating the DMA for each buffer. The calc is: |
|
3166 * 4 = ceil(buffer len/mss). To make sure we don't |
|
3167 * overrun the FIFO, adjust the max buffer len if mss |
|
3168 * drops. */ |
|
3169 if (mss) { |
|
3170 u8 hdr_len; |
|
3171 max_per_txd = min(mss << 2, max_per_txd); |
|
3172 max_txd_pwr = fls(max_per_txd) - 1; |
|
3173 |
|
3174 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
3175 if (skb->data_len && hdr_len == len) { |
|
3176 switch (hw->mac_type) { |
|
3177 unsigned int pull_size; |
|
3178 case e1000_82544: |
|
3179 /* Make sure we have room to chop off 4 bytes, |
|
3180 * and that the end alignment will work out to |
|
3181 * this hardware's requirements |
|
3182 * NOTE: this is a TSO only workaround |
|
3183 * if end byte alignment not correct move us |
|
3184 * into the next dword */ |
|
3185 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
|
3186 break; |
|
3187 /* fall through */ |
|
3188 pull_size = min((unsigned int)4, skb->data_len); |
|
3189 if (!__pskb_pull_tail(skb, pull_size)) { |
|
3190 e_err(drv, "__pskb_pull_tail " |
|
3191 "failed.\n"); |
|
3192 dev_kfree_skb_any(skb); |
|
3193 return NETDEV_TX_OK; |
|
3194 } |
|
3195 len = skb_headlen(skb); |
|
3196 break; |
|
3197 default: |
|
3198 /* do nothing */ |
|
3199 break; |
|
3200 } |
|
3201 } |
|
3202 } |
|
3203 |
|
3204 /* reserve a descriptor for the offload context */ |
|
3205 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
|
3206 count++; |
|
3207 count++; |
|
3208 |
|
3209 /* Controller Erratum workaround */ |
|
3210 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
|
3211 count++; |
|
3212 |
|
3213 count += TXD_USE_COUNT(len, max_txd_pwr); |
|
3214 |
|
3215 if (adapter->pcix_82544) |
|
3216 count++; |
|
3217 |
|
3218 /* work-around for errata 10 and it applies to all controllers |
|
3219 * in PCI-X mode, so add one more descriptor to the count |
|
3220 */ |
|
3221 if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
|
3222 (len > 2015))) |
|
3223 count++; |
|
3224 |
|
3225 nr_frags = skb_shinfo(skb)->nr_frags; |
|
3226 for (f = 0; f < nr_frags; f++) |
|
3227 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
|
3228 max_txd_pwr); |
|
3229 if (adapter->pcix_82544) |
|
3230 count += nr_frags; |
|
3231 |
|
3232 /* need: count + 2 desc gap to keep tail from touching |
|
3233 * head, otherwise try next time */ |
|
3234 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
|
3235 return NETDEV_TX_BUSY; |
|
3236 |
|
3237 if (unlikely(hw->mac_type == e1000_82547)) { |
|
3238 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
|
3239 if (!adapter->ecdev) { |
|
3240 netif_stop_queue(netdev); |
|
3241 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3242 mod_timer(&adapter->tx_fifo_stall_timer, |
|
3243 jiffies + 1); |
|
3244 } |
|
3245 return NETDEV_TX_BUSY; |
|
3246 } |
|
3247 } |
|
3248 |
|
3249 if (unlikely(vlan_tx_tag_present(skb))) { |
|
3250 tx_flags |= E1000_TX_FLAGS_VLAN; |
|
3251 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); |
|
3252 } |
|
3253 |
|
3254 first = tx_ring->next_to_use; |
|
3255 |
|
3256 tso = e1000_tso(adapter, tx_ring, skb); |
|
3257 if (tso < 0) { |
|
3258 if (!adapter->ecdev) { |
|
3259 dev_kfree_skb_any(skb); |
|
3260 } |
|
3261 return NETDEV_TX_OK; |
|
3262 } |
|
3263 |
|
3264 if (likely(tso)) { |
|
3265 if (likely(hw->mac_type != e1000_82544)) |
|
3266 tx_ring->last_tx_tso = 1; |
|
3267 tx_flags |= E1000_TX_FLAGS_TSO; |
|
3268 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
|
3269 tx_flags |= E1000_TX_FLAGS_CSUM; |
|
3270 |
|
3271 if (likely(skb->protocol == htons(ETH_P_IP))) |
|
3272 tx_flags |= E1000_TX_FLAGS_IPV4; |
|
3273 |
|
3274 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
|
3275 nr_frags, mss); |
|
3276 |
|
3277 if (count) { |
|
3278 e1000_tx_queue(adapter, tx_ring, tx_flags, count); |
|
3279 if (!adapter->ecdev) { |
|
3280 /* Make sure there is space in the ring for the next send. */ |
|
3281 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
|
3282 } |
|
3283 |
|
3284 } else { |
|
3285 if (!adapter->ecdev) { |
|
3286 dev_kfree_skb_any(skb); |
|
3287 } |
|
3288 tx_ring->buffer_info[first].time_stamp = 0; |
|
3289 tx_ring->next_to_use = first; |
|
3290 } |
|
3291 |
|
3292 return NETDEV_TX_OK; |
|
3293 } |
|
3294 |
|
3295 /** |
|
3296 * e1000_tx_timeout - Respond to a Tx Hang |
|
3297 * @netdev: network interface device structure |
|
3298 **/ |
|
3299 |
|
3300 static void e1000_tx_timeout(struct net_device *netdev) |
|
3301 { |
|
3302 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3303 |
|
3304 /* Do the reset outside of interrupt context */ |
|
3305 adapter->tx_timeout_count++; |
|
3306 schedule_work(&adapter->reset_task); |
|
3307 } |
|
3308 |
|
3309 static void e1000_reset_task(struct work_struct *work) |
|
3310 { |
|
3311 struct e1000_adapter *adapter = |
|
3312 container_of(work, struct e1000_adapter, reset_task); |
|
3313 |
|
3314 e1000_reinit_safe(adapter); |
|
3315 } |
|
3316 |
|
3317 /** |
|
3318 * e1000_get_stats - Get System Network Statistics |
|
3319 * @netdev: network interface device structure |
|
3320 * |
|
3321 * Returns the address of the device statistics structure. |
|
3322 * The statistics are actually updated from the timer callback. |
|
3323 **/ |
|
3324 |
|
3325 static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
|
3326 { |
|
3327 /* only return the current stats */ |
|
3328 return &netdev->stats; |
|
3329 } |
|
3330 |
|
3331 /** |
|
3332 * e1000_change_mtu - Change the Maximum Transfer Unit |
|
3333 * @netdev: network interface device structure |
|
3334 * @new_mtu: new value for maximum frame size |
|
3335 * |
|
3336 * Returns 0 on success, negative on failure |
|
3337 **/ |
|
3338 |
|
3339 static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
|
3340 { |
|
3341 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3342 struct e1000_hw *hw = &adapter->hw; |
|
3343 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
|
3344 |
|
3345 if (adapter->ecdev) { |
|
3346 return -EBUSY; |
|
3347 } |
|
3348 |
|
3349 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
|
3350 (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
|
3351 e_err(probe, "Invalid MTU setting\n"); |
|
3352 return -EINVAL; |
|
3353 } |
|
3354 |
|
3355 /* Adapter-specific max frame size limits. */ |
|
3356 switch (hw->mac_type) { |
|
3357 case e1000_undefined ... e1000_82542_rev2_1: |
|
3358 if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
|
3359 e_err(probe, "Jumbo Frames not supported.\n"); |
|
3360 return -EINVAL; |
|
3361 } |
|
3362 break; |
|
3363 default: |
|
3364 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ |
|
3365 break; |
|
3366 } |
|
3367 |
|
3368 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
|
3369 msleep(1); |
|
3370 /* e1000_down has a dependency on max_frame_size */ |
|
3371 hw->max_frame_size = max_frame; |
|
3372 if (netif_running(netdev)) |
|
3373 e1000_down(adapter); |
|
3374 |
|
3375 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
|
3376 * means we reserve 2 more, this pushes us to allocate from the next |
|
3377 * larger slab size. |
|
3378 * i.e. RXBUFFER_2048 --> size-4096 slab |
|
3379 * however with the new *_jumbo_rx* routines, jumbo receives will use |
|
3380 * fragmented skbs */ |
|
3381 |
|
3382 if (max_frame <= E1000_RXBUFFER_2048) |
|
3383 adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
|
3384 else |
|
3385 #if (PAGE_SIZE >= E1000_RXBUFFER_16384) |
|
3386 adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
|
3387 #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
|
3388 adapter->rx_buffer_len = PAGE_SIZE; |
|
3389 #endif |
|
3390 |
|
3391 /* adjust allocation if LPE protects us, and we aren't using SBP */ |
|
3392 if (!hw->tbi_compatibility_on && |
|
3393 ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
|
3394 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
|
3395 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
|
3396 |
|
3397 pr_info("%s changing MTU from %d to %d\n", |
|
3398 netdev->name, netdev->mtu, new_mtu); |
|
3399 netdev->mtu = new_mtu; |
|
3400 |
|
3401 if (netif_running(netdev)) |
|
3402 e1000_up(adapter); |
|
3403 else |
|
3404 e1000_reset(adapter); |
|
3405 |
|
3406 clear_bit(__E1000_RESETTING, &adapter->flags); |
|
3407 |
|
3408 return 0; |
|
3409 } |
|
3410 |
|
3411 /** |
|
3412 * e1000_update_stats - Update the board statistics counters |
|
3413 * @adapter: board private structure |
|
3414 **/ |
|
3415 |
|
3416 void e1000_update_stats(struct e1000_adapter *adapter) |
|
3417 { |
|
3418 struct net_device *netdev = adapter->netdev; |
|
3419 struct e1000_hw *hw = &adapter->hw; |
|
3420 struct pci_dev *pdev = adapter->pdev; |
|
3421 unsigned long flags = 0; |
|
3422 u16 phy_tmp; |
|
3423 |
|
3424 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
|
3425 |
|
3426 /* |
|
3427 * Prevent stats update while adapter is being reset, or if the pci |
|
3428 * connection is down. |
|
3429 */ |
|
3430 if (adapter->link_speed == 0) |
|
3431 return; |
|
3432 if (pci_channel_offline(pdev)) |
|
3433 return; |
|
3434 |
|
3435 if (!adapter->ecdev) { |
|
3436 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
3437 } |
|
3438 |
|
3439 /* these counters are modified from e1000_tbi_adjust_stats, |
|
3440 * called from the interrupt context, so they must only |
|
3441 * be written while holding adapter->stats_lock |
|
3442 */ |
|
3443 |
|
3444 adapter->stats.crcerrs += er32(CRCERRS); |
|
3445 adapter->stats.gprc += er32(GPRC); |
|
3446 adapter->stats.gorcl += er32(GORCL); |
|
3447 adapter->stats.gorch += er32(GORCH); |
|
3448 adapter->stats.bprc += er32(BPRC); |
|
3449 adapter->stats.mprc += er32(MPRC); |
|
3450 adapter->stats.roc += er32(ROC); |
|
3451 |
|
3452 adapter->stats.prc64 += er32(PRC64); |
|
3453 adapter->stats.prc127 += er32(PRC127); |
|
3454 adapter->stats.prc255 += er32(PRC255); |
|
3455 adapter->stats.prc511 += er32(PRC511); |
|
3456 adapter->stats.prc1023 += er32(PRC1023); |
|
3457 adapter->stats.prc1522 += er32(PRC1522); |
|
3458 |
|
3459 adapter->stats.symerrs += er32(SYMERRS); |
|
3460 adapter->stats.mpc += er32(MPC); |
|
3461 adapter->stats.scc += er32(SCC); |
|
3462 adapter->stats.ecol += er32(ECOL); |
|
3463 adapter->stats.mcc += er32(MCC); |
|
3464 adapter->stats.latecol += er32(LATECOL); |
|
3465 adapter->stats.dc += er32(DC); |
|
3466 adapter->stats.sec += er32(SEC); |
|
3467 adapter->stats.rlec += er32(RLEC); |
|
3468 adapter->stats.xonrxc += er32(XONRXC); |
|
3469 adapter->stats.xontxc += er32(XONTXC); |
|
3470 adapter->stats.xoffrxc += er32(XOFFRXC); |
|
3471 adapter->stats.xofftxc += er32(XOFFTXC); |
|
3472 adapter->stats.fcruc += er32(FCRUC); |
|
3473 adapter->stats.gptc += er32(GPTC); |
|
3474 adapter->stats.gotcl += er32(GOTCL); |
|
3475 adapter->stats.gotch += er32(GOTCH); |
|
3476 adapter->stats.rnbc += er32(RNBC); |
|
3477 adapter->stats.ruc += er32(RUC); |
|
3478 adapter->stats.rfc += er32(RFC); |
|
3479 adapter->stats.rjc += er32(RJC); |
|
3480 adapter->stats.torl += er32(TORL); |
|
3481 adapter->stats.torh += er32(TORH); |
|
3482 adapter->stats.totl += er32(TOTL); |
|
3483 adapter->stats.toth += er32(TOTH); |
|
3484 adapter->stats.tpr += er32(TPR); |
|
3485 |
|
3486 adapter->stats.ptc64 += er32(PTC64); |
|
3487 adapter->stats.ptc127 += er32(PTC127); |
|
3488 adapter->stats.ptc255 += er32(PTC255); |
|
3489 adapter->stats.ptc511 += er32(PTC511); |
|
3490 adapter->stats.ptc1023 += er32(PTC1023); |
|
3491 adapter->stats.ptc1522 += er32(PTC1522); |
|
3492 |
|
3493 adapter->stats.mptc += er32(MPTC); |
|
3494 adapter->stats.bptc += er32(BPTC); |
|
3495 |
|
3496 /* used for adaptive IFS */ |
|
3497 |
|
3498 hw->tx_packet_delta = er32(TPT); |
|
3499 adapter->stats.tpt += hw->tx_packet_delta; |
|
3500 hw->collision_delta = er32(COLC); |
|
3501 adapter->stats.colc += hw->collision_delta; |
|
3502 |
|
3503 if (hw->mac_type >= e1000_82543) { |
|
3504 adapter->stats.algnerrc += er32(ALGNERRC); |
|
3505 adapter->stats.rxerrc += er32(RXERRC); |
|
3506 adapter->stats.tncrs += er32(TNCRS); |
|
3507 adapter->stats.cexterr += er32(CEXTERR); |
|
3508 adapter->stats.tsctc += er32(TSCTC); |
|
3509 adapter->stats.tsctfc += er32(TSCTFC); |
|
3510 } |
|
3511 |
|
3512 /* Fill out the OS statistics structure */ |
|
3513 netdev->stats.multicast = adapter->stats.mprc; |
|
3514 netdev->stats.collisions = adapter->stats.colc; |
|
3515 |
|
3516 /* Rx Errors */ |
|
3517 |
|
3518 /* RLEC on some newer hardware can be incorrect so build |
|
3519 * our own version based on RUC and ROC */ |
|
3520 netdev->stats.rx_errors = adapter->stats.rxerrc + |
|
3521 adapter->stats.crcerrs + adapter->stats.algnerrc + |
|
3522 adapter->stats.ruc + adapter->stats.roc + |
|
3523 adapter->stats.cexterr; |
|
3524 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
|
3525 netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
|
3526 netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
|
3527 netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
|
3528 netdev->stats.rx_missed_errors = adapter->stats.mpc; |
|
3529 |
|
3530 /* Tx Errors */ |
|
3531 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
|
3532 netdev->stats.tx_errors = adapter->stats.txerrc; |
|
3533 netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
|
3534 netdev->stats.tx_window_errors = adapter->stats.latecol; |
|
3535 netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
|
3536 if (hw->bad_tx_carr_stats_fd && |
|
3537 adapter->link_duplex == FULL_DUPLEX) { |
|
3538 netdev->stats.tx_carrier_errors = 0; |
|
3539 adapter->stats.tncrs = 0; |
|
3540 } |
|
3541 |
|
3542 /* Tx Dropped needs to be maintained elsewhere */ |
|
3543 |
|
3544 /* Phy Stats */ |
|
3545 if (hw->media_type == e1000_media_type_copper) { |
|
3546 if ((adapter->link_speed == SPEED_1000) && |
|
3547 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
|
3548 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
|
3549 adapter->phy_stats.idle_errors += phy_tmp; |
|
3550 } |
|
3551 |
|
3552 if ((hw->mac_type <= e1000_82546) && |
|
3553 (hw->phy_type == e1000_phy_m88) && |
|
3554 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) |
|
3555 adapter->phy_stats.receive_errors += phy_tmp; |
|
3556 } |
|
3557 |
|
3558 /* Management Stats */ |
|
3559 if (hw->has_smbus) { |
|
3560 adapter->stats.mgptc += er32(MGTPTC); |
|
3561 adapter->stats.mgprc += er32(MGTPRC); |
|
3562 adapter->stats.mgpdc += er32(MGTPDC); |
|
3563 } |
|
3564 |
|
3565 if (!adapter->ecdev) { |
|
3566 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
3567 } |
|
3568 } |
|
3569 |
|
3570 void ec_poll(struct net_device *netdev) |
|
3571 { |
|
3572 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3573 if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) { |
|
3574 e1000_watchdog((unsigned long) adapter); |
|
3575 adapter->ec_watchdog_jiffies = jiffies; |
|
3576 } |
|
3577 |
|
3578 e1000_intr(0, netdev); |
|
3579 } |
|
3580 |
|
3581 /** |
|
3582 * e1000_intr - Interrupt Handler |
|
3583 * @irq: interrupt number |
|
3584 * @data: pointer to a network interface device structure |
|
3585 **/ |
|
3586 |
|
3587 static irqreturn_t e1000_intr(int irq, void *data) |
|
3588 { |
|
3589 struct net_device *netdev = data; |
|
3590 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
3591 struct e1000_hw *hw = &adapter->hw; |
|
3592 u32 icr = er32(ICR); |
|
3593 |
|
3594 if (unlikely((!icr))) |
|
3595 return IRQ_NONE; /* Not our interrupt */ |
|
3596 |
|
3597 /* |
|
3598 * we might have caused the interrupt, but the above |
|
3599 * read cleared it, and just in case the driver is |
|
3600 * down there is nothing to do so return handled |
|
3601 */ |
|
3602 if (unlikely(test_bit(__E1000_DOWN, &adapter->flags))) |
|
3603 return IRQ_HANDLED; |
|
3604 |
|
3605 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
|
3606 hw->get_link_status = 1; |
|
3607 /* guard against interrupt when we're going down */ |
|
3608 if (!adapter->ecdev && !test_bit(__E1000_DOWN, &adapter->flags)) |
|
3609 mod_timer(&adapter->watchdog_timer, jiffies + 1); |
|
3610 } |
|
3611 |
|
3612 if (adapter->ecdev) { |
|
3613 int i, ec_work_done = 0; |
|
3614 for (i = 0; i < E1000_MAX_INTR; i++) { |
|
3615 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring, |
|
3616 &ec_work_done, 100) && |
|
3617 !e1000_clean_tx_irq(adapter, adapter->tx_ring))) { |
|
3618 break; |
|
3619 } |
|
3620 } |
|
3621 } else { |
|
3622 /* disable interrupts, without the synchronize_irq bit */ |
|
3623 ew32(IMC, ~0); |
|
3624 E1000_WRITE_FLUSH(); |
|
3625 |
|
3626 if (likely(napi_schedule_prep(&adapter->napi))) { |
|
3627 adapter->total_tx_bytes = 0; |
|
3628 adapter->total_tx_packets = 0; |
|
3629 adapter->total_rx_bytes = 0; |
|
3630 adapter->total_rx_packets = 0; |
|
3631 __napi_schedule(&adapter->napi); |
|
3632 } else { |
|
3633 /* this really should not happen! if it does it is basically a |
|
3634 * bug, but not a hard error, so enable ints and continue */ |
|
3635 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3636 e1000_irq_enable(adapter); |
|
3637 } |
|
3638 } |
|
3639 |
|
3640 return IRQ_HANDLED; |
|
3641 } |
|
3642 |
|
3643 /** |
|
3644 * e1000_clean - NAPI Rx polling callback |
|
3645 * @adapter: board private structure |
|
3646 * EtherCAT: never called |
|
3647 **/ |
|
3648 static int e1000_clean(struct napi_struct *napi, int budget) |
|
3649 { |
|
3650 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
|
3651 int tx_clean_complete = 0, work_done = 0; |
|
3652 |
|
3653 tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
|
3654 |
|
3655 adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
|
3656 |
|
3657 if (!tx_clean_complete) |
|
3658 work_done = budget; |
|
3659 |
|
3660 /* If budget not fully consumed, exit the polling mode */ |
|
3661 if (work_done < budget) { |
|
3662 if (likely(adapter->itr_setting & 3)) |
|
3663 e1000_set_itr(adapter); |
|
3664 napi_complete(napi); |
|
3665 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
3666 e1000_irq_enable(adapter); |
|
3667 } |
|
3668 |
|
3669 return work_done; |
|
3670 } |
|
3671 |
|
3672 /** |
|
3673 * e1000_clean_tx_irq - Reclaim resources after transmit completes |
|
3674 * @adapter: board private structure |
|
3675 **/ |
|
3676 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
|
3677 struct e1000_tx_ring *tx_ring) |
|
3678 { |
|
3679 struct e1000_hw *hw = &adapter->hw; |
|
3680 struct net_device *netdev = adapter->netdev; |
|
3681 struct e1000_tx_desc *tx_desc, *eop_desc; |
|
3682 struct e1000_buffer *buffer_info; |
|
3683 unsigned int i, eop; |
|
3684 unsigned int count = 0; |
|
3685 unsigned int total_tx_bytes=0, total_tx_packets=0; |
|
3686 |
|
3687 i = tx_ring->next_to_clean; |
|
3688 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3689 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3690 |
|
3691 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
|
3692 (count < tx_ring->count)) { |
|
3693 bool cleaned = false; |
|
3694 rmb(); /* read buffer_info after eop_desc */ |
|
3695 for ( ; !cleaned; count++) { |
|
3696 tx_desc = E1000_TX_DESC(*tx_ring, i); |
|
3697 buffer_info = &tx_ring->buffer_info[i]; |
|
3698 cleaned = (i == eop); |
|
3699 |
|
3700 if (cleaned) { |
|
3701 struct sk_buff *skb = buffer_info->skb; |
|
3702 unsigned int segs, bytecount; |
|
3703 segs = skb_shinfo(skb)->gso_segs ?: 1; |
|
3704 /* multiply data chunks by size of headers */ |
|
3705 bytecount = ((segs - 1) * skb_headlen(skb)) + |
|
3706 skb->len; |
|
3707 total_tx_packets += segs; |
|
3708 total_tx_bytes += bytecount; |
|
3709 } |
|
3710 e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
|
3711 tx_desc->upper.data = 0; |
|
3712 |
|
3713 if (unlikely(++i == tx_ring->count)) i = 0; |
|
3714 } |
|
3715 |
|
3716 eop = tx_ring->buffer_info[i].next_to_watch; |
|
3717 eop_desc = E1000_TX_DESC(*tx_ring, eop); |
|
3718 } |
|
3719 |
|
3720 tx_ring->next_to_clean = i; |
|
3721 |
|
3722 #define TX_WAKE_THRESHOLD 32 |
|
3723 if (!adapter->ecdev && unlikely(count && netif_carrier_ok(netdev) && |
|
3724 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
|
3725 /* Make sure that anybody stopping the queue after this |
|
3726 * sees the new next_to_clean. |
|
3727 */ |
|
3728 smp_mb(); |
|
3729 |
|
3730 if (netif_queue_stopped(netdev) && |
|
3731 !(test_bit(__E1000_DOWN, &adapter->flags))) { |
|
3732 netif_wake_queue(netdev); |
|
3733 ++adapter->restart_queue; |
|
3734 } |
|
3735 } |
|
3736 |
|
3737 if (!adapter->ecdev && adapter->detect_tx_hung) { |
|
3738 /* Detect a transmit hang in hardware, this serializes the |
|
3739 * check with the clearing of time_stamp and movement of i */ |
|
3740 adapter->detect_tx_hung = false; |
|
3741 if (tx_ring->buffer_info[eop].time_stamp && |
|
3742 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + |
|
3743 (adapter->tx_timeout_factor * HZ)) && |
|
3744 !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
|
3745 |
|
3746 /* detected Tx unit hang */ |
|
3747 e_err(drv, "Detected Tx Unit Hang\n" |
|
3748 " Tx Queue <%lu>\n" |
|
3749 " TDH <%x>\n" |
|
3750 " TDT <%x>\n" |
|
3751 " next_to_use <%x>\n" |
|
3752 " next_to_clean <%x>\n" |
|
3753 "buffer_info[next_to_clean]\n" |
|
3754 " time_stamp <%lx>\n" |
|
3755 " next_to_watch <%x>\n" |
|
3756 " jiffies <%lx>\n" |
|
3757 " next_to_watch.status <%x>\n", |
|
3758 (unsigned long)((tx_ring - adapter->tx_ring) / |
|
3759 sizeof(struct e1000_tx_ring)), |
|
3760 readl(hw->hw_addr + tx_ring->tdh), |
|
3761 readl(hw->hw_addr + tx_ring->tdt), |
|
3762 tx_ring->next_to_use, |
|
3763 tx_ring->next_to_clean, |
|
3764 tx_ring->buffer_info[eop].time_stamp, |
|
3765 eop, |
|
3766 jiffies, |
|
3767 eop_desc->upper.fields.status); |
|
3768 netif_stop_queue(netdev); |
|
3769 } |
|
3770 } |
|
3771 adapter->total_tx_bytes += total_tx_bytes; |
|
3772 adapter->total_tx_packets += total_tx_packets; |
|
3773 netdev->stats.tx_bytes += total_tx_bytes; |
|
3774 netdev->stats.tx_packets += total_tx_packets; |
|
3775 return count < tx_ring->count; |
|
3776 } |
|
3777 |
|
3778 /** |
|
3779 * e1000_rx_checksum - Receive Checksum Offload for 82543 |
|
3780 * @adapter: board private structure |
|
3781 * @status_err: receive descriptor status and error fields |
|
3782 * @csum: receive descriptor csum field |
|
3783 * @sk_buff: socket buffer with received data |
|
3784 **/ |
|
3785 |
|
3786 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
|
3787 u32 csum, struct sk_buff *skb) |
|
3788 { |
|
3789 struct e1000_hw *hw = &adapter->hw; |
|
3790 u16 status = (u16)status_err; |
|
3791 u8 errors = (u8)(status_err >> 24); |
|
3792 |
|
3793 skb_checksum_none_assert(skb); |
|
3794 |
|
3795 /* 82543 or newer only */ |
|
3796 if (unlikely(hw->mac_type < e1000_82543)) return; |
|
3797 /* Ignore Checksum bit is set */ |
|
3798 if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
|
3799 /* TCP/UDP checksum error bit is set */ |
|
3800 if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
|
3801 /* let the stack verify checksum errors */ |
|
3802 adapter->hw_csum_err++; |
|
3803 return; |
|
3804 } |
|
3805 /* TCP/UDP Checksum has not been calculated */ |
|
3806 if (!(status & E1000_RXD_STAT_TCPCS)) |
|
3807 return; |
|
3808 |
|
3809 /* It must be a TCP or UDP packet with a valid checksum */ |
|
3810 if (likely(status & E1000_RXD_STAT_TCPCS)) { |
|
3811 /* TCP checksum is good */ |
|
3812 skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
3813 } |
|
3814 adapter->hw_csum_good++; |
|
3815 } |
|
3816 |
|
3817 /** |
|
3818 * e1000_consume_page - helper function |
|
3819 **/ |
|
3820 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, |
|
3821 u16 length) |
|
3822 { |
|
3823 bi->page = NULL; |
|
3824 skb->len += length; |
|
3825 skb->data_len += length; |
|
3826 skb->truesize += length; |
|
3827 } |
|
3828 |
|
3829 /** |
|
3830 * e1000_receive_skb - helper function to handle rx indications |
|
3831 * @adapter: board private structure |
|
3832 * @status: descriptor status field as written by hardware |
|
3833 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
|
3834 * @skb: pointer to sk_buff to be indicated to stack |
|
3835 */ |
|
3836 static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, |
|
3837 __le16 vlan, struct sk_buff *skb) |
|
3838 { |
|
3839 skb->protocol = eth_type_trans(skb, adapter->netdev); |
|
3840 |
|
3841 if ((unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP)))) |
|
3842 vlan_gro_receive(&adapter->napi, adapter->vlgrp, |
|
3843 le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK, |
|
3844 skb); |
|
3845 else |
|
3846 napi_gro_receive(&adapter->napi, skb); |
|
3847 } |
|
3848 |
|
3849 /** |
|
3850 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy |
|
3851 * @adapter: board private structure |
|
3852 * @rx_ring: ring to clean |
|
3853 * @work_done: amount of napi work completed this call |
|
3854 * @work_to_do: max amount of work allowed for this call to do |
|
3855 * |
|
3856 * the return value indicates whether actual cleaning was done, there |
|
3857 * is no guarantee that everything was cleaned |
|
3858 */ |
|
3859 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
|
3860 struct e1000_rx_ring *rx_ring, |
|
3861 int *work_done, int work_to_do) |
|
3862 { |
|
3863 struct e1000_hw *hw = &adapter->hw; |
|
3864 struct net_device *netdev = adapter->netdev; |
|
3865 struct pci_dev *pdev = adapter->pdev; |
|
3866 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
3867 struct e1000_buffer *buffer_info, *next_buffer; |
|
3868 unsigned long irq_flags; |
|
3869 u32 length; |
|
3870 unsigned int i; |
|
3871 int cleaned_count = 0; |
|
3872 bool cleaned = false; |
|
3873 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
3874 |
|
3875 i = rx_ring->next_to_clean; |
|
3876 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
3877 buffer_info = &rx_ring->buffer_info[i]; |
|
3878 |
|
3879 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
3880 struct sk_buff *skb; |
|
3881 u8 status; |
|
3882 |
|
3883 if (*work_done >= work_to_do) |
|
3884 break; |
|
3885 (*work_done)++; |
|
3886 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
3887 |
|
3888 status = rx_desc->status; |
|
3889 skb = buffer_info->skb; |
|
3890 if (!adapter->ecdev) { |
|
3891 buffer_info->skb = NULL; |
|
3892 } |
|
3893 |
|
3894 if (++i == rx_ring->count) i = 0; |
|
3895 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
3896 prefetch(next_rxd); |
|
3897 |
|
3898 next_buffer = &rx_ring->buffer_info[i]; |
|
3899 |
|
3900 cleaned = true; |
|
3901 cleaned_count++; |
|
3902 dma_unmap_page(&pdev->dev, buffer_info->dma, |
|
3903 buffer_info->length, DMA_FROM_DEVICE); |
|
3904 buffer_info->dma = 0; |
|
3905 |
|
3906 length = le16_to_cpu(rx_desc->length); |
|
3907 |
|
3908 /* errors is only valid for DD + EOP descriptors */ |
|
3909 if (!adapter->ecdev && |
|
3910 unlikely((status & E1000_RXD_STAT_EOP) && |
|
3911 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { |
|
3912 u8 last_byte = *(skb->data + length - 1); |
|
3913 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
3914 last_byte)) { |
|
3915 spin_lock_irqsave(&adapter->stats_lock, |
|
3916 irq_flags); |
|
3917 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
3918 length, skb->data); |
|
3919 spin_unlock_irqrestore(&adapter->stats_lock, |
|
3920 irq_flags); |
|
3921 length--; |
|
3922 } else { |
|
3923 /* recycle both page and skb */ |
|
3924 buffer_info->skb = skb; |
|
3925 /* an error means any chain goes out the window |
|
3926 * too */ |
|
3927 if (rx_ring->rx_skb_top) |
|
3928 dev_kfree_skb(rx_ring->rx_skb_top); |
|
3929 rx_ring->rx_skb_top = NULL; |
|
3930 goto next_desc; |
|
3931 } |
|
3932 } |
|
3933 |
|
3934 #define rxtop rx_ring->rx_skb_top |
|
3935 if (!(status & E1000_RXD_STAT_EOP)) { |
|
3936 /* this descriptor is only the beginning (or middle) */ |
|
3937 if (!rxtop) { |
|
3938 /* this is the beginning of a chain */ |
|
3939 rxtop = skb; |
|
3940 skb_fill_page_desc(rxtop, 0, buffer_info->page, |
|
3941 0, length); |
|
3942 } else { |
|
3943 /* this is the middle of a chain */ |
|
3944 skb_fill_page_desc(rxtop, |
|
3945 skb_shinfo(rxtop)->nr_frags, |
|
3946 buffer_info->page, 0, length); |
|
3947 /* re-use the skb, only consumed the page */ |
|
3948 buffer_info->skb = skb; |
|
3949 } |
|
3950 e1000_consume_page(buffer_info, rxtop, length); |
|
3951 goto next_desc; |
|
3952 } else { |
|
3953 if (rxtop) { |
|
3954 /* end of the chain */ |
|
3955 skb_fill_page_desc(rxtop, |
|
3956 skb_shinfo(rxtop)->nr_frags, |
|
3957 buffer_info->page, 0, length); |
|
3958 /* re-use the current skb, we only consumed the |
|
3959 * page */ |
|
3960 buffer_info->skb = skb; |
|
3961 skb = rxtop; |
|
3962 rxtop = NULL; |
|
3963 e1000_consume_page(buffer_info, skb, length); |
|
3964 } else { |
|
3965 /* no chain, got EOP, this buf is the packet |
|
3966 * copybreak to save the put_page/alloc_page */ |
|
3967 if (length <= copybreak && |
|
3968 skb_tailroom(skb) >= length) { |
|
3969 u8 *vaddr; |
|
3970 vaddr = kmap_atomic(buffer_info->page, |
|
3971 KM_SKB_DATA_SOFTIRQ); |
|
3972 memcpy(skb_tail_pointer(skb), vaddr, length); |
|
3973 kunmap_atomic(vaddr, |
|
3974 KM_SKB_DATA_SOFTIRQ); |
|
3975 /* re-use the page, so don't erase |
|
3976 * buffer_info->page */ |
|
3977 skb_put(skb, length); |
|
3978 } else { |
|
3979 skb_fill_page_desc(skb, 0, |
|
3980 buffer_info->page, 0, |
|
3981 length); |
|
3982 e1000_consume_page(buffer_info, skb, |
|
3983 length); |
|
3984 } |
|
3985 } |
|
3986 } |
|
3987 |
|
3988 /* Receive Checksum Offload XXX recompute due to CRC strip? */ |
|
3989 e1000_rx_checksum(adapter, |
|
3990 (u32)(status) | |
|
3991 ((u32)(rx_desc->errors) << 24), |
|
3992 le16_to_cpu(rx_desc->csum), skb); |
|
3993 |
|
3994 pskb_trim(skb, skb->len - 4); |
|
3995 |
|
3996 /* probably a little skewed due to removing CRC */ |
|
3997 total_rx_bytes += skb->len; |
|
3998 total_rx_packets++; |
|
3999 |
|
4000 /* eth type trans needs skb->data to point to something */ |
|
4001 if (!pskb_may_pull(skb, ETH_HLEN)) { |
|
4002 e_err(drv, "pskb_may_pull failed.\n"); |
|
4003 if (!adapter->ecdev) { |
|
4004 dev_kfree_skb(skb); |
|
4005 } |
|
4006 goto next_desc; |
|
4007 } |
|
4008 |
|
4009 if (adapter->ecdev) { |
|
4010 ecdev_receive(adapter->ecdev, skb->data, length); |
|
4011 |
|
4012 // No need to detect link status as |
|
4013 // long as frames are received: Reset watchdog. |
|
4014 adapter->ec_watchdog_jiffies = jiffies; |
|
4015 } else { |
|
4016 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
4017 } |
|
4018 |
|
4019 next_desc: |
|
4020 rx_desc->status = 0; |
|
4021 |
|
4022 /* return some buffers to hardware, one at a time is too slow */ |
|
4023 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4024 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4025 cleaned_count = 0; |
|
4026 } |
|
4027 |
|
4028 /* use prefetched values */ |
|
4029 rx_desc = next_rxd; |
|
4030 buffer_info = next_buffer; |
|
4031 } |
|
4032 rx_ring->next_to_clean = i; |
|
4033 |
|
4034 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4035 if (cleaned_count) |
|
4036 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4037 |
|
4038 adapter->total_rx_packets += total_rx_packets; |
|
4039 adapter->total_rx_bytes += total_rx_bytes; |
|
4040 netdev->stats.rx_bytes += total_rx_bytes; |
|
4041 netdev->stats.rx_packets += total_rx_packets; |
|
4042 return cleaned; |
|
4043 } |
|
4044 |
|
4045 /* |
|
4046 * this should improve performance for small packets with large amounts |
|
4047 * of reassembly being done in the stack |
|
4048 */ |
|
4049 static void e1000_check_copybreak(struct net_device *netdev, |
|
4050 struct e1000_buffer *buffer_info, |
|
4051 u32 length, struct sk_buff **skb) |
|
4052 { |
|
4053 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4054 struct sk_buff *new_skb; |
|
4055 |
|
4056 if (adapter->ecdev || length > copybreak) |
|
4057 return; |
|
4058 |
|
4059 new_skb = netdev_alloc_skb_ip_align(netdev, length); |
|
4060 if (!new_skb) |
|
4061 return; |
|
4062 |
|
4063 skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN, |
|
4064 (*skb)->data - NET_IP_ALIGN, |
|
4065 length + NET_IP_ALIGN); |
|
4066 /* save the skb in buffer_info as good */ |
|
4067 buffer_info->skb = *skb; |
|
4068 *skb = new_skb; |
|
4069 } |
|
4070 |
|
4071 /** |
|
4072 * e1000_clean_rx_irq - Send received data up the network stack; legacy |
|
4073 * @adapter: board private structure |
|
4074 * @rx_ring: ring to clean |
|
4075 * @work_done: amount of napi work completed this call |
|
4076 * @work_to_do: max amount of work allowed for this call to do |
|
4077 */ |
|
4078 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
|
4079 struct e1000_rx_ring *rx_ring, |
|
4080 int *work_done, int work_to_do) |
|
4081 { |
|
4082 struct e1000_hw *hw = &adapter->hw; |
|
4083 struct net_device *netdev = adapter->netdev; |
|
4084 struct pci_dev *pdev = adapter->pdev; |
|
4085 struct e1000_rx_desc *rx_desc, *next_rxd; |
|
4086 struct e1000_buffer *buffer_info, *next_buffer; |
|
4087 unsigned long flags; |
|
4088 u32 length; |
|
4089 unsigned int i; |
|
4090 int cleaned_count = 0; |
|
4091 bool cleaned = false; |
|
4092 unsigned int total_rx_bytes=0, total_rx_packets=0; |
|
4093 |
|
4094 i = rx_ring->next_to_clean; |
|
4095 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4096 buffer_info = &rx_ring->buffer_info[i]; |
|
4097 |
|
4098 while (rx_desc->status & E1000_RXD_STAT_DD) { |
|
4099 struct sk_buff *skb; |
|
4100 u8 status; |
|
4101 |
|
4102 if (*work_done >= work_to_do) |
|
4103 break; |
|
4104 (*work_done)++; |
|
4105 rmb(); /* read descriptor and rx_buffer_info after status DD */ |
|
4106 |
|
4107 status = rx_desc->status; |
|
4108 skb = buffer_info->skb; |
|
4109 if (!adapter->ecdev) { |
|
4110 buffer_info->skb = NULL; |
|
4111 } |
|
4112 |
|
4113 prefetch(skb->data - NET_IP_ALIGN); |
|
4114 |
|
4115 if (++i == rx_ring->count) i = 0; |
|
4116 next_rxd = E1000_RX_DESC(*rx_ring, i); |
|
4117 prefetch(next_rxd); |
|
4118 |
|
4119 next_buffer = &rx_ring->buffer_info[i]; |
|
4120 |
|
4121 cleaned = true; |
|
4122 cleaned_count++; |
|
4123 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
4124 buffer_info->length, DMA_FROM_DEVICE); |
|
4125 buffer_info->dma = 0; |
|
4126 |
|
4127 length = le16_to_cpu(rx_desc->length); |
|
4128 /* !EOP means multiple descriptors were used to store a single |
|
4129 * packet, if thats the case we need to toss it. In fact, we |
|
4130 * to toss every packet with the EOP bit clear and the next |
|
4131 * frame that _does_ have the EOP bit set, as it is by |
|
4132 * definition only a frame fragment |
|
4133 */ |
|
4134 if (unlikely(!(status & E1000_RXD_STAT_EOP))) |
|
4135 adapter->discarding = true; |
|
4136 |
|
4137 if (adapter->discarding) { |
|
4138 /* All receives must fit into a single buffer */ |
|
4139 e_dbg("Receive packet consumed multiple buffers\n"); |
|
4140 /* recycle */ |
|
4141 buffer_info->skb = skb; |
|
4142 if (status & E1000_RXD_STAT_EOP) |
|
4143 adapter->discarding = false; |
|
4144 goto next_desc; |
|
4145 } |
|
4146 |
|
4147 if (!adapter->ecdev && |
|
4148 unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
|
4149 u8 last_byte = *(skb->data + length - 1); |
|
4150 if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
|
4151 last_byte)) { |
|
4152 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4153 e1000_tbi_adjust_stats(hw, &adapter->stats, |
|
4154 length, skb->data); |
|
4155 spin_unlock_irqrestore(&adapter->stats_lock, |
|
4156 flags); |
|
4157 length--; |
|
4158 } else { |
|
4159 /* recycle */ |
|
4160 buffer_info->skb = skb; |
|
4161 goto next_desc; |
|
4162 } |
|
4163 } |
|
4164 |
|
4165 /* adjust length to remove Ethernet CRC, this must be |
|
4166 * done after the TBI_ACCEPT workaround above */ |
|
4167 length -= 4; |
|
4168 |
|
4169 /* probably a little skewed due to removing CRC */ |
|
4170 total_rx_bytes += length; |
|
4171 total_rx_packets++; |
|
4172 |
|
4173 e1000_check_copybreak(netdev, buffer_info, length, &skb); |
|
4174 |
|
4175 skb_put(skb, length); |
|
4176 |
|
4177 /* Receive Checksum Offload */ |
|
4178 e1000_rx_checksum(adapter, |
|
4179 (u32)(status) | |
|
4180 ((u32)(rx_desc->errors) << 24), |
|
4181 le16_to_cpu(rx_desc->csum), skb); |
|
4182 |
|
4183 if (adapter->ecdev) { |
|
4184 ecdev_receive(adapter->ecdev, skb->data, length); |
|
4185 |
|
4186 // No need to detect link status as |
|
4187 // long as frames are received: Reset watchdog. |
|
4188 adapter->ec_watchdog_jiffies = jiffies; |
|
4189 } else { |
|
4190 e1000_receive_skb(adapter, status, rx_desc->special, skb); |
|
4191 } |
|
4192 |
|
4193 next_desc: |
|
4194 rx_desc->status = 0; |
|
4195 |
|
4196 /* return some buffers to hardware, one at a time is too slow */ |
|
4197 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { |
|
4198 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4199 cleaned_count = 0; |
|
4200 } |
|
4201 |
|
4202 /* use prefetched values */ |
|
4203 rx_desc = next_rxd; |
|
4204 buffer_info = next_buffer; |
|
4205 } |
|
4206 rx_ring->next_to_clean = i; |
|
4207 |
|
4208 cleaned_count = E1000_DESC_UNUSED(rx_ring); |
|
4209 if (cleaned_count) |
|
4210 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); |
|
4211 |
|
4212 adapter->total_rx_packets += total_rx_packets; |
|
4213 adapter->total_rx_bytes += total_rx_bytes; |
|
4214 netdev->stats.rx_bytes += total_rx_bytes; |
|
4215 netdev->stats.rx_packets += total_rx_packets; |
|
4216 return cleaned; |
|
4217 } |
|
4218 |
|
4219 /** |
|
4220 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers |
|
4221 * @adapter: address of board private structure |
|
4222 * @rx_ring: pointer to receive ring structure |
|
4223 * @cleaned_count: number of buffers to allocate this pass |
|
4224 **/ |
|
4225 |
|
4226 static void |
|
4227 e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
|
4228 struct e1000_rx_ring *rx_ring, int cleaned_count) |
|
4229 { |
|
4230 struct net_device *netdev = adapter->netdev; |
|
4231 struct pci_dev *pdev = adapter->pdev; |
|
4232 struct e1000_rx_desc *rx_desc; |
|
4233 struct e1000_buffer *buffer_info; |
|
4234 struct sk_buff *skb; |
|
4235 unsigned int i; |
|
4236 unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
|
4237 |
|
4238 i = rx_ring->next_to_use; |
|
4239 buffer_info = &rx_ring->buffer_info[i]; |
|
4240 |
|
4241 while (cleaned_count--) { |
|
4242 skb = buffer_info->skb; |
|
4243 if (skb) { |
|
4244 skb_trim(skb, 0); |
|
4245 goto check_page; |
|
4246 } |
|
4247 |
|
4248 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4249 if (unlikely(!skb)) { |
|
4250 /* Better luck next round */ |
|
4251 adapter->alloc_rx_buff_failed++; |
|
4252 break; |
|
4253 } |
|
4254 |
|
4255 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4256 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4257 struct sk_buff *oldskb = skb; |
|
4258 e_err(rx_err, "skb align check failed: %u bytes at " |
|
4259 "%p\n", bufsz, skb->data); |
|
4260 /* Try again, without freeing the previous */ |
|
4261 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4262 /* Failed allocation, critical failure */ |
|
4263 if (!skb) { |
|
4264 dev_kfree_skb(oldskb); |
|
4265 adapter->alloc_rx_buff_failed++; |
|
4266 break; |
|
4267 } |
|
4268 |
|
4269 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4270 /* give up */ |
|
4271 dev_kfree_skb(skb); |
|
4272 dev_kfree_skb(oldskb); |
|
4273 break; /* while (cleaned_count--) */ |
|
4274 } |
|
4275 |
|
4276 /* Use new allocation */ |
|
4277 dev_kfree_skb(oldskb); |
|
4278 } |
|
4279 buffer_info->skb = skb; |
|
4280 buffer_info->length = adapter->rx_buffer_len; |
|
4281 check_page: |
|
4282 /* allocate a new page if necessary */ |
|
4283 if (!buffer_info->page) { |
|
4284 buffer_info->page = alloc_page(GFP_ATOMIC); |
|
4285 if (unlikely(!buffer_info->page)) { |
|
4286 adapter->alloc_rx_buff_failed++; |
|
4287 break; |
|
4288 } |
|
4289 } |
|
4290 |
|
4291 if (!buffer_info->dma) { |
|
4292 buffer_info->dma = dma_map_page(&pdev->dev, |
|
4293 buffer_info->page, 0, |
|
4294 buffer_info->length, |
|
4295 DMA_FROM_DEVICE); |
|
4296 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
4297 put_page(buffer_info->page); |
|
4298 dev_kfree_skb(skb); |
|
4299 buffer_info->page = NULL; |
|
4300 buffer_info->skb = NULL; |
|
4301 buffer_info->dma = 0; |
|
4302 adapter->alloc_rx_buff_failed++; |
|
4303 break; /* while !buffer_info->skb */ |
|
4304 } |
|
4305 } |
|
4306 |
|
4307 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4308 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4309 |
|
4310 if (unlikely(++i == rx_ring->count)) |
|
4311 i = 0; |
|
4312 buffer_info = &rx_ring->buffer_info[i]; |
|
4313 } |
|
4314 |
|
4315 if (likely(rx_ring->next_to_use != i)) { |
|
4316 rx_ring->next_to_use = i; |
|
4317 if (unlikely(i-- == 0)) |
|
4318 i = (rx_ring->count - 1); |
|
4319 |
|
4320 /* Force memory writes to complete before letting h/w |
|
4321 * know there are new descriptors to fetch. (Only |
|
4322 * applicable for weak-ordered memory model archs, |
|
4323 * such as IA-64). */ |
|
4324 wmb(); |
|
4325 writel(i, adapter->hw.hw_addr + rx_ring->rdt); |
|
4326 } |
|
4327 } |
|
4328 |
|
4329 /** |
|
4330 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
|
4331 * @adapter: address of board private structure |
|
4332 **/ |
|
4333 |
|
4334 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
|
4335 struct e1000_rx_ring *rx_ring, |
|
4336 int cleaned_count) |
|
4337 { |
|
4338 struct e1000_hw *hw = &adapter->hw; |
|
4339 struct net_device *netdev = adapter->netdev; |
|
4340 struct pci_dev *pdev = adapter->pdev; |
|
4341 struct e1000_rx_desc *rx_desc; |
|
4342 struct e1000_buffer *buffer_info; |
|
4343 struct sk_buff *skb; |
|
4344 unsigned int i; |
|
4345 unsigned int bufsz = adapter->rx_buffer_len; |
|
4346 |
|
4347 i = rx_ring->next_to_use; |
|
4348 buffer_info = &rx_ring->buffer_info[i]; |
|
4349 |
|
4350 while (cleaned_count--) { |
|
4351 skb = buffer_info->skb; |
|
4352 if (skb) { |
|
4353 skb_trim(skb, 0); |
|
4354 goto map_skb; |
|
4355 } |
|
4356 |
|
4357 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4358 if (unlikely(!skb)) { |
|
4359 /* Better luck next round */ |
|
4360 adapter->alloc_rx_buff_failed++; |
|
4361 break; |
|
4362 } |
|
4363 |
|
4364 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4365 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4366 struct sk_buff *oldskb = skb; |
|
4367 e_err(rx_err, "skb align check failed: %u bytes at " |
|
4368 "%p\n", bufsz, skb->data); |
|
4369 /* Try again, without freeing the previous */ |
|
4370 skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
|
4371 /* Failed allocation, critical failure */ |
|
4372 if (!skb) { |
|
4373 dev_kfree_skb(oldskb); |
|
4374 adapter->alloc_rx_buff_failed++; |
|
4375 break; |
|
4376 } |
|
4377 |
|
4378 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
|
4379 /* give up */ |
|
4380 dev_kfree_skb(skb); |
|
4381 dev_kfree_skb(oldskb); |
|
4382 adapter->alloc_rx_buff_failed++; |
|
4383 break; /* while !buffer_info->skb */ |
|
4384 } |
|
4385 |
|
4386 /* Use new allocation */ |
|
4387 dev_kfree_skb(oldskb); |
|
4388 } |
|
4389 buffer_info->skb = skb; |
|
4390 buffer_info->length = adapter->rx_buffer_len; |
|
4391 map_skb: |
|
4392 buffer_info->dma = dma_map_single(&pdev->dev, |
|
4393 skb->data, |
|
4394 buffer_info->length, |
|
4395 DMA_FROM_DEVICE); |
|
4396 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
|
4397 dev_kfree_skb(skb); |
|
4398 buffer_info->skb = NULL; |
|
4399 buffer_info->dma = 0; |
|
4400 adapter->alloc_rx_buff_failed++; |
|
4401 break; /* while !buffer_info->skb */ |
|
4402 } |
|
4403 |
|
4404 /* |
|
4405 * XXX if it was allocated cleanly it will never map to a |
|
4406 * boundary crossing |
|
4407 */ |
|
4408 |
|
4409 /* Fix for errata 23, can't cross 64kB boundary */ |
|
4410 if (!e1000_check_64k_bound(adapter, |
|
4411 (void *)(unsigned long)buffer_info->dma, |
|
4412 adapter->rx_buffer_len)) { |
|
4413 e_err(rx_err, "dma align check failed: %u bytes at " |
|
4414 "%p\n", adapter->rx_buffer_len, |
|
4415 (void *)(unsigned long)buffer_info->dma); |
|
4416 dev_kfree_skb(skb); |
|
4417 buffer_info->skb = NULL; |
|
4418 |
|
4419 dma_unmap_single(&pdev->dev, buffer_info->dma, |
|
4420 adapter->rx_buffer_len, |
|
4421 DMA_FROM_DEVICE); |
|
4422 buffer_info->dma = 0; |
|
4423 |
|
4424 adapter->alloc_rx_buff_failed++; |
|
4425 break; /* while !buffer_info->skb */ |
|
4426 } |
|
4427 rx_desc = E1000_RX_DESC(*rx_ring, i); |
|
4428 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
|
4429 |
|
4430 if (unlikely(++i == rx_ring->count)) |
|
4431 i = 0; |
|
4432 buffer_info = &rx_ring->buffer_info[i]; |
|
4433 } |
|
4434 |
|
4435 if (likely(rx_ring->next_to_use != i)) { |
|
4436 rx_ring->next_to_use = i; |
|
4437 if (unlikely(i-- == 0)) |
|
4438 i = (rx_ring->count - 1); |
|
4439 |
|
4440 /* Force memory writes to complete before letting h/w |
|
4441 * know there are new descriptors to fetch. (Only |
|
4442 * applicable for weak-ordered memory model archs, |
|
4443 * such as IA-64). */ |
|
4444 wmb(); |
|
4445 writel(i, hw->hw_addr + rx_ring->rdt); |
|
4446 } |
|
4447 } |
|
4448 |
|
4449 /** |
|
4450 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. |
|
4451 * @adapter: |
|
4452 **/ |
|
4453 |
|
4454 static void e1000_smartspeed(struct e1000_adapter *adapter) |
|
4455 { |
|
4456 struct e1000_hw *hw = &adapter->hw; |
|
4457 u16 phy_status; |
|
4458 u16 phy_ctrl; |
|
4459 |
|
4460 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
|
4461 !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) |
|
4462 return; |
|
4463 |
|
4464 if (adapter->smartspeed == 0) { |
|
4465 /* If Master/Slave config fault is asserted twice, |
|
4466 * we assume back-to-back */ |
|
4467 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4468 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4469 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
|
4470 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
|
4471 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4472 if (phy_ctrl & CR_1000T_MS_ENABLE) { |
|
4473 phy_ctrl &= ~CR_1000T_MS_ENABLE; |
|
4474 e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
|
4475 phy_ctrl); |
|
4476 adapter->smartspeed++; |
|
4477 if (!e1000_phy_setup_autoneg(hw) && |
|
4478 !e1000_read_phy_reg(hw, PHY_CTRL, |
|
4479 &phy_ctrl)) { |
|
4480 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4481 MII_CR_RESTART_AUTO_NEG); |
|
4482 e1000_write_phy_reg(hw, PHY_CTRL, |
|
4483 phy_ctrl); |
|
4484 } |
|
4485 } |
|
4486 return; |
|
4487 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
|
4488 /* If still no link, perhaps using 2/3 pair cable */ |
|
4489 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
|
4490 phy_ctrl |= CR_1000T_MS_ENABLE; |
|
4491 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
|
4492 if (!e1000_phy_setup_autoneg(hw) && |
|
4493 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { |
|
4494 phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
|
4495 MII_CR_RESTART_AUTO_NEG); |
|
4496 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
|
4497 } |
|
4498 } |
|
4499 /* Restart process after E1000_SMARTSPEED_MAX iterations */ |
|
4500 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
|
4501 adapter->smartspeed = 0; |
|
4502 } |
|
4503 |
|
4504 /** |
|
4505 * e1000_ioctl - |
|
4506 * @netdev: |
|
4507 * @ifreq: |
|
4508 * @cmd: |
|
4509 **/ |
|
4510 |
|
4511 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
|
4512 { |
|
4513 switch (cmd) { |
|
4514 case SIOCGMIIPHY: |
|
4515 case SIOCGMIIREG: |
|
4516 case SIOCSMIIREG: |
|
4517 return e1000_mii_ioctl(netdev, ifr, cmd); |
|
4518 default: |
|
4519 return -EOPNOTSUPP; |
|
4520 } |
|
4521 } |
|
4522 |
|
4523 /** |
|
4524 * e1000_mii_ioctl - |
|
4525 * @netdev: |
|
4526 * @ifreq: |
|
4527 * @cmd: |
|
4528 **/ |
|
4529 |
|
4530 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
|
4531 int cmd) |
|
4532 { |
|
4533 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4534 struct e1000_hw *hw = &adapter->hw; |
|
4535 struct mii_ioctl_data *data = if_mii(ifr); |
|
4536 int retval; |
|
4537 u16 mii_reg; |
|
4538 unsigned long flags; |
|
4539 |
|
4540 if (hw->media_type != e1000_media_type_copper) |
|
4541 return -EOPNOTSUPP; |
|
4542 |
|
4543 switch (cmd) { |
|
4544 case SIOCGMIIPHY: |
|
4545 data->phy_id = hw->phy_addr; |
|
4546 break; |
|
4547 case SIOCGMIIREG: |
|
4548 if (adapter->ecdev) { |
|
4549 return -EPERM; |
|
4550 } |
|
4551 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4552 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
|
4553 &data->val_out)) { |
|
4554 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4555 return -EIO; |
|
4556 } |
|
4557 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4558 break; |
|
4559 case SIOCSMIIREG: |
|
4560 if (adapter->ecdev) { |
|
4561 return -EPERM; |
|
4562 } |
|
4563 if (data->reg_num & ~(0x1F)) |
|
4564 return -EFAULT; |
|
4565 mii_reg = data->val_in; |
|
4566 spin_lock_irqsave(&adapter->stats_lock, flags); |
|
4567 if (e1000_write_phy_reg(hw, data->reg_num, |
|
4568 mii_reg)) { |
|
4569 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4570 return -EIO; |
|
4571 } |
|
4572 spin_unlock_irqrestore(&adapter->stats_lock, flags); |
|
4573 if (hw->media_type == e1000_media_type_copper) { |
|
4574 switch (data->reg_num) { |
|
4575 case PHY_CTRL: |
|
4576 if (mii_reg & MII_CR_POWER_DOWN) |
|
4577 break; |
|
4578 if (mii_reg & MII_CR_AUTO_NEG_EN) { |
|
4579 hw->autoneg = 1; |
|
4580 hw->autoneg_advertised = 0x2F; |
|
4581 } else { |
|
4582 u32 speed; |
|
4583 if (mii_reg & 0x40) |
|
4584 speed = SPEED_1000; |
|
4585 else if (mii_reg & 0x2000) |
|
4586 speed = SPEED_100; |
|
4587 else |
|
4588 speed = SPEED_10; |
|
4589 retval = e1000_set_spd_dplx( |
|
4590 adapter, speed, |
|
4591 ((mii_reg & 0x100) |
|
4592 ? DUPLEX_FULL : |
|
4593 DUPLEX_HALF)); |
|
4594 if (retval) |
|
4595 return retval; |
|
4596 } |
|
4597 if (netif_running(adapter->netdev)) |
|
4598 e1000_reinit_locked(adapter); |
|
4599 else |
|
4600 e1000_reset(adapter); |
|
4601 break; |
|
4602 case M88E1000_PHY_SPEC_CTRL: |
|
4603 case M88E1000_EXT_PHY_SPEC_CTRL: |
|
4604 if (e1000_phy_reset(hw)) |
|
4605 return -EIO; |
|
4606 break; |
|
4607 } |
|
4608 } else { |
|
4609 switch (data->reg_num) { |
|
4610 case PHY_CTRL: |
|
4611 if (mii_reg & MII_CR_POWER_DOWN) |
|
4612 break; |
|
4613 if (netif_running(adapter->netdev)) |
|
4614 e1000_reinit_locked(adapter); |
|
4615 else |
|
4616 e1000_reset(adapter); |
|
4617 break; |
|
4618 } |
|
4619 } |
|
4620 break; |
|
4621 default: |
|
4622 return -EOPNOTSUPP; |
|
4623 } |
|
4624 return E1000_SUCCESS; |
|
4625 } |
|
4626 |
|
4627 void e1000_pci_set_mwi(struct e1000_hw *hw) |
|
4628 { |
|
4629 struct e1000_adapter *adapter = hw->back; |
|
4630 int ret_val = pci_set_mwi(adapter->pdev); |
|
4631 |
|
4632 if (ret_val) |
|
4633 e_err(probe, "Error in setting MWI\n"); |
|
4634 } |
|
4635 |
|
4636 void e1000_pci_clear_mwi(struct e1000_hw *hw) |
|
4637 { |
|
4638 struct e1000_adapter *adapter = hw->back; |
|
4639 |
|
4640 pci_clear_mwi(adapter->pdev); |
|
4641 } |
|
4642 |
|
4643 int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
|
4644 { |
|
4645 struct e1000_adapter *adapter = hw->back; |
|
4646 return pcix_get_mmrbc(adapter->pdev); |
|
4647 } |
|
4648 |
|
4649 void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
|
4650 { |
|
4651 struct e1000_adapter *adapter = hw->back; |
|
4652 pcix_set_mmrbc(adapter->pdev, mmrbc); |
|
4653 } |
|
4654 |
|
4655 void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
|
4656 { |
|
4657 outl(value, port); |
|
4658 } |
|
4659 |
|
4660 static void e1000_vlan_rx_register(struct net_device *netdev, |
|
4661 struct vlan_group *grp) |
|
4662 { |
|
4663 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4664 struct e1000_hw *hw = &adapter->hw; |
|
4665 u32 ctrl, rctl; |
|
4666 |
|
4667 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4668 e1000_irq_disable(adapter); |
|
4669 adapter->vlgrp = grp; |
|
4670 |
|
4671 if (grp) { |
|
4672 /* enable VLAN tag insert/strip */ |
|
4673 ctrl = er32(CTRL); |
|
4674 ctrl |= E1000_CTRL_VME; |
|
4675 ew32(CTRL, ctrl); |
|
4676 |
|
4677 /* enable VLAN receive filtering */ |
|
4678 rctl = er32(RCTL); |
|
4679 rctl &= ~E1000_RCTL_CFIEN; |
|
4680 if (!(netdev->flags & IFF_PROMISC)) |
|
4681 rctl |= E1000_RCTL_VFE; |
|
4682 ew32(RCTL, rctl); |
|
4683 e1000_update_mng_vlan(adapter); |
|
4684 } else { |
|
4685 /* disable VLAN tag insert/strip */ |
|
4686 ctrl = er32(CTRL); |
|
4687 ctrl &= ~E1000_CTRL_VME; |
|
4688 ew32(CTRL, ctrl); |
|
4689 |
|
4690 /* disable VLAN receive filtering */ |
|
4691 rctl = er32(RCTL); |
|
4692 rctl &= ~E1000_RCTL_VFE; |
|
4693 ew32(RCTL, rctl); |
|
4694 |
|
4695 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
|
4696 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
|
4697 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
|
4698 } |
|
4699 } |
|
4700 |
|
4701 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4702 e1000_irq_enable(adapter); |
|
4703 } |
|
4704 |
|
4705 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
|
4706 { |
|
4707 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4708 struct e1000_hw *hw = &adapter->hw; |
|
4709 u32 vfta, index; |
|
4710 |
|
4711 if ((hw->mng_cookie.status & |
|
4712 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
|
4713 (vid == adapter->mng_vlan_id)) |
|
4714 return; |
|
4715 /* add VID to filter table */ |
|
4716 index = (vid >> 5) & 0x7F; |
|
4717 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4718 vfta |= (1 << (vid & 0x1F)); |
|
4719 e1000_write_vfta(hw, index, vfta); |
|
4720 } |
|
4721 |
|
4722 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
|
4723 { |
|
4724 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4725 struct e1000_hw *hw = &adapter->hw; |
|
4726 u32 vfta, index; |
|
4727 |
|
4728 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4729 e1000_irq_disable(adapter); |
|
4730 vlan_group_set_device(adapter->vlgrp, vid, NULL); |
|
4731 if (!test_bit(__E1000_DOWN, &adapter->flags)) |
|
4732 e1000_irq_enable(adapter); |
|
4733 |
|
4734 /* remove VID from filter table */ |
|
4735 index = (vid >> 5) & 0x7F; |
|
4736 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
|
4737 vfta &= ~(1 << (vid & 0x1F)); |
|
4738 e1000_write_vfta(hw, index, vfta); |
|
4739 } |
|
4740 |
|
4741 static void e1000_restore_vlan(struct e1000_adapter *adapter) |
|
4742 { |
|
4743 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
|
4744 |
|
4745 if (adapter->vlgrp) { |
|
4746 u16 vid; |
|
4747 for (vid = 0; vid < VLAN_N_VID; vid++) { |
|
4748 if (!vlan_group_get_device(adapter->vlgrp, vid)) |
|
4749 continue; |
|
4750 e1000_vlan_rx_add_vid(adapter->netdev, vid); |
|
4751 } |
|
4752 } |
|
4753 } |
|
4754 |
|
4755 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx) |
|
4756 { |
|
4757 struct e1000_hw *hw = &adapter->hw; |
|
4758 |
|
4759 hw->autoneg = 0; |
|
4760 |
|
4761 /* Make sure dplx is at most 1 bit and lsb of speed is not set |
|
4762 * for the switch() below to work */ |
|
4763 if ((spd & 1) || (dplx & ~1)) |
|
4764 goto err_inval; |
|
4765 |
|
4766 /* Fiber NICs only allow 1000 gbps Full duplex */ |
|
4767 if ((hw->media_type == e1000_media_type_fiber) && |
|
4768 spd != SPEED_1000 && |
|
4769 dplx != DUPLEX_FULL) |
|
4770 goto err_inval; |
|
4771 |
|
4772 switch (spd + dplx) { |
|
4773 case SPEED_10 + DUPLEX_HALF: |
|
4774 hw->forced_speed_duplex = e1000_10_half; |
|
4775 break; |
|
4776 case SPEED_10 + DUPLEX_FULL: |
|
4777 hw->forced_speed_duplex = e1000_10_full; |
|
4778 break; |
|
4779 case SPEED_100 + DUPLEX_HALF: |
|
4780 hw->forced_speed_duplex = e1000_100_half; |
|
4781 break; |
|
4782 case SPEED_100 + DUPLEX_FULL: |
|
4783 hw->forced_speed_duplex = e1000_100_full; |
|
4784 break; |
|
4785 case SPEED_1000 + DUPLEX_FULL: |
|
4786 hw->autoneg = 1; |
|
4787 hw->autoneg_advertised = ADVERTISE_1000_FULL; |
|
4788 break; |
|
4789 case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
|
4790 default: |
|
4791 goto err_inval; |
|
4792 } |
|
4793 return 0; |
|
4794 |
|
4795 err_inval: |
|
4796 e_err(probe, "Unsupported Speed/Duplex configuration\n"); |
|
4797 return -EINVAL; |
|
4798 } |
|
4799 |
|
4800 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
|
4801 { |
|
4802 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4803 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4804 struct e1000_hw *hw = &adapter->hw; |
|
4805 u32 ctrl, ctrl_ext, rctl, status; |
|
4806 u32 wufc = adapter->wol; |
|
4807 #ifdef CONFIG_PM |
|
4808 int retval = 0; |
|
4809 #endif |
|
4810 |
|
4811 if (adapter->ecdev) { |
|
4812 return -EBUSY; |
|
4813 } |
|
4814 |
|
4815 netif_device_detach(netdev); |
|
4816 |
|
4817 if (netif_running(netdev)) { |
|
4818 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
|
4819 e1000_down(adapter); |
|
4820 } |
|
4821 |
|
4822 #ifdef CONFIG_PM |
|
4823 retval = pci_save_state(pdev); |
|
4824 if (retval) |
|
4825 return retval; |
|
4826 #endif |
|
4827 |
|
4828 status = er32(STATUS); |
|
4829 if (status & E1000_STATUS_LU) |
|
4830 wufc &= ~E1000_WUFC_LNKC; |
|
4831 |
|
4832 if (wufc) { |
|
4833 e1000_setup_rctl(adapter); |
|
4834 e1000_set_rx_mode(netdev); |
|
4835 |
|
4836 /* turn on all-multi mode if wake on multicast is enabled */ |
|
4837 if (wufc & E1000_WUFC_MC) { |
|
4838 rctl = er32(RCTL); |
|
4839 rctl |= E1000_RCTL_MPE; |
|
4840 ew32(RCTL, rctl); |
|
4841 } |
|
4842 |
|
4843 if (hw->mac_type >= e1000_82540) { |
|
4844 ctrl = er32(CTRL); |
|
4845 /* advertise wake from D3Cold */ |
|
4846 #define E1000_CTRL_ADVD3WUC 0x00100000 |
|
4847 /* phy power management enable */ |
|
4848 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
|
4849 ctrl |= E1000_CTRL_ADVD3WUC | |
|
4850 E1000_CTRL_EN_PHY_PWR_MGMT; |
|
4851 ew32(CTRL, ctrl); |
|
4852 } |
|
4853 |
|
4854 if (hw->media_type == e1000_media_type_fiber || |
|
4855 hw->media_type == e1000_media_type_internal_serdes) { |
|
4856 /* keep the laser running in D3 */ |
|
4857 ctrl_ext = er32(CTRL_EXT); |
|
4858 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
|
4859 ew32(CTRL_EXT, ctrl_ext); |
|
4860 } |
|
4861 |
|
4862 ew32(WUC, E1000_WUC_PME_EN); |
|
4863 ew32(WUFC, wufc); |
|
4864 } else { |
|
4865 ew32(WUC, 0); |
|
4866 ew32(WUFC, 0); |
|
4867 } |
|
4868 |
|
4869 e1000_release_manageability(adapter); |
|
4870 |
|
4871 *enable_wake = !!wufc; |
|
4872 |
|
4873 /* make sure adapter isn't asleep if manageability is enabled */ |
|
4874 if (adapter->en_mng_pt) |
|
4875 *enable_wake = true; |
|
4876 |
|
4877 if (netif_running(netdev)) |
|
4878 e1000_free_irq(adapter); |
|
4879 |
|
4880 pci_disable_device(pdev); |
|
4881 |
|
4882 return 0; |
|
4883 } |
|
4884 |
|
4885 #ifdef CONFIG_PM |
|
4886 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
|
4887 { |
|
4888 int retval; |
|
4889 bool wake; |
|
4890 |
|
4891 retval = __e1000_shutdown(pdev, &wake); |
|
4892 if (retval) |
|
4893 return retval; |
|
4894 |
|
4895 if (wake) { |
|
4896 pci_prepare_to_sleep(pdev); |
|
4897 } else { |
|
4898 pci_wake_from_d3(pdev, false); |
|
4899 pci_set_power_state(pdev, PCI_D3hot); |
|
4900 } |
|
4901 |
|
4902 return 0; |
|
4903 } |
|
4904 |
|
4905 static int e1000_resume(struct pci_dev *pdev) |
|
4906 { |
|
4907 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4908 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4909 struct e1000_hw *hw = &adapter->hw; |
|
4910 u32 err; |
|
4911 |
|
4912 if (adapter->ecdev) { |
|
4913 return -EBUSY; |
|
4914 } |
|
4915 |
|
4916 pci_set_power_state(pdev, PCI_D0); |
|
4917 pci_restore_state(pdev); |
|
4918 pci_save_state(pdev); |
|
4919 |
|
4920 if (adapter->need_ioport) |
|
4921 err = pci_enable_device(pdev); |
|
4922 else |
|
4923 err = pci_enable_device_mem(pdev); |
|
4924 if (err) { |
|
4925 pr_err("Cannot enable PCI device from suspend\n"); |
|
4926 return err; |
|
4927 } |
|
4928 pci_set_master(pdev); |
|
4929 |
|
4930 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
4931 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
4932 |
|
4933 if (netif_running(netdev)) { |
|
4934 err = e1000_request_irq(adapter); |
|
4935 if (err) |
|
4936 return err; |
|
4937 } |
|
4938 |
|
4939 e1000_power_up_phy(adapter); |
|
4940 e1000_reset(adapter); |
|
4941 ew32(WUS, ~0); |
|
4942 |
|
4943 e1000_init_manageability(adapter); |
|
4944 |
|
4945 if (netif_running(netdev)) |
|
4946 e1000_up(adapter); |
|
4947 |
|
4948 if (!adapter->ecdev) { |
|
4949 netif_device_attach(netdev); |
|
4950 } |
|
4951 |
|
4952 return 0; |
|
4953 } |
|
4954 #endif |
|
4955 |
|
4956 static void e1000_shutdown(struct pci_dev *pdev) |
|
4957 { |
|
4958 bool wake; |
|
4959 |
|
4960 __e1000_shutdown(pdev, &wake); |
|
4961 |
|
4962 if (system_state == SYSTEM_POWER_OFF) { |
|
4963 pci_wake_from_d3(pdev, wake); |
|
4964 pci_set_power_state(pdev, PCI_D3hot); |
|
4965 } |
|
4966 } |
|
4967 |
|
4968 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
4969 /* |
|
4970 * Polling 'interrupt' - used by things like netconsole to send skbs |
|
4971 * without having to re-enable interrupts. It's not called while |
|
4972 * the interrupt routine is executing. |
|
4973 */ |
|
4974 static void e1000_netpoll(struct net_device *netdev) |
|
4975 { |
|
4976 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4977 |
|
4978 disable_irq(adapter->pdev->irq); |
|
4979 e1000_intr(adapter->pdev->irq, netdev); |
|
4980 enable_irq(adapter->pdev->irq); |
|
4981 } |
|
4982 #endif |
|
4983 |
|
4984 /** |
|
4985 * e1000_io_error_detected - called when PCI error is detected |
|
4986 * @pdev: Pointer to PCI device |
|
4987 * @state: The current pci connection state |
|
4988 * |
|
4989 * This function is called after a PCI bus error affecting |
|
4990 * this device has been detected. |
|
4991 */ |
|
4992 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
|
4993 pci_channel_state_t state) |
|
4994 { |
|
4995 struct net_device *netdev = pci_get_drvdata(pdev); |
|
4996 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
4997 |
|
4998 netif_device_detach(netdev); |
|
4999 |
|
5000 if (state == pci_channel_io_perm_failure) |
|
5001 return PCI_ERS_RESULT_DISCONNECT; |
|
5002 |
|
5003 if (netif_running(netdev)) |
|
5004 e1000_down(adapter); |
|
5005 pci_disable_device(pdev); |
|
5006 |
|
5007 /* Request a slot slot reset. */ |
|
5008 return PCI_ERS_RESULT_NEED_RESET; |
|
5009 } |
|
5010 |
|
5011 /** |
|
5012 * e1000_io_slot_reset - called after the pci bus has been reset. |
|
5013 * @pdev: Pointer to PCI device |
|
5014 * |
|
5015 * Restart the card from scratch, as if from a cold-boot. Implementation |
|
5016 * resembles the first-half of the e1000_resume routine. |
|
5017 */ |
|
5018 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) |
|
5019 { |
|
5020 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5021 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5022 struct e1000_hw *hw = &adapter->hw; |
|
5023 int err; |
|
5024 |
|
5025 if (adapter->need_ioport) |
|
5026 err = pci_enable_device(pdev); |
|
5027 else |
|
5028 err = pci_enable_device_mem(pdev); |
|
5029 if (err) { |
|
5030 pr_err("Cannot re-enable PCI device after reset.\n"); |
|
5031 return PCI_ERS_RESULT_DISCONNECT; |
|
5032 } |
|
5033 pci_set_master(pdev); |
|
5034 |
|
5035 pci_enable_wake(pdev, PCI_D3hot, 0); |
|
5036 pci_enable_wake(pdev, PCI_D3cold, 0); |
|
5037 |
|
5038 e1000_reset(adapter); |
|
5039 ew32(WUS, ~0); |
|
5040 |
|
5041 return PCI_ERS_RESULT_RECOVERED; |
|
5042 } |
|
5043 |
|
5044 /** |
|
5045 * e1000_io_resume - called when traffic can start flowing again. |
|
5046 * @pdev: Pointer to PCI device |
|
5047 * |
|
5048 * This callback is called when the error recovery driver tells us that |
|
5049 * its OK to resume normal operation. Implementation resembles the |
|
5050 * second-half of the e1000_resume routine. |
|
5051 */ |
|
5052 static void e1000_io_resume(struct pci_dev *pdev) |
|
5053 { |
|
5054 struct net_device *netdev = pci_get_drvdata(pdev); |
|
5055 struct e1000_adapter *adapter = netdev_priv(netdev); |
|
5056 |
|
5057 e1000_init_manageability(adapter); |
|
5058 |
|
5059 if (netif_running(netdev)) { |
|
5060 if (e1000_up(adapter)) { |
|
5061 pr_info("can't bring device back up after reset\n"); |
|
5062 return; |
|
5063 } |
|
5064 } |
|
5065 |
|
5066 netif_device_attach(netdev); |
|
5067 } |
|
5068 |
|
5069 /* e1000_main.c */ |